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abe529af | 1 | /* |
e0edde6f | 2 | * Copyright (c) 2009, 2010, 2011, 2012 Nicira, Inc. |
abe529af BP |
3 | * |
4 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
5 | * you may not use this file except in compliance with the License. | |
6 | * You may obtain a copy of the License at: | |
7 | * | |
8 | * http://www.apache.org/licenses/LICENSE-2.0 | |
9 | * | |
10 | * Unless required by applicable law or agreed to in writing, software | |
11 | * distributed under the License is distributed on an "AS IS" BASIS, | |
12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
13 | * See the License for the specific language governing permissions and | |
14 | * limitations under the License. | |
15 | */ | |
16 | ||
17 | #include <config.h> | |
18 | ||
5bee6e26 | 19 | #include "ofproto/ofproto-provider.h" |
abe529af BP |
20 | |
21 | #include <errno.h> | |
22 | ||
23 | #include "autopath.h" | |
24 | #include "bond.h" | |
daff3353 | 25 | #include "bundle.h" |
abe529af BP |
26 | #include "byte-order.h" |
27 | #include "connmgr.h" | |
28 | #include "coverage.h" | |
29 | #include "cfm.h" | |
30 | #include "dpif.h" | |
31 | #include "dynamic-string.h" | |
32 | #include "fail-open.h" | |
33 | #include "hmapx.h" | |
34 | #include "lacp.h" | |
75a75043 | 35 | #include "learn.h" |
abe529af | 36 | #include "mac-learning.h" |
816fd533 | 37 | #include "meta-flow.h" |
abe529af BP |
38 | #include "multipath.h" |
39 | #include "netdev.h" | |
40 | #include "netlink.h" | |
41 | #include "nx-match.h" | |
42 | #include "odp-util.h" | |
43 | #include "ofp-util.h" | |
44 | #include "ofpbuf.h" | |
f25d0cf3 | 45 | #include "ofp-actions.h" |
31a19d69 | 46 | #include "ofp-parse.h" |
abe529af | 47 | #include "ofp-print.h" |
9d6ac44e | 48 | #include "ofproto-dpif-governor.h" |
bae473fe | 49 | #include "ofproto-dpif-sflow.h" |
abe529af | 50 | #include "poll-loop.h" |
0d085684 | 51 | #include "simap.h" |
27022416 | 52 | #include "smap.h" |
abe529af | 53 | #include "timer.h" |
6c1491fb | 54 | #include "unaligned.h" |
abe529af BP |
55 | #include "unixctl.h" |
56 | #include "vlan-bitmap.h" | |
57 | #include "vlog.h" | |
58 | ||
59 | VLOG_DEFINE_THIS_MODULE(ofproto_dpif); | |
60 | ||
abe529af | 61 | COVERAGE_DEFINE(ofproto_dpif_expired); |
abe529af BP |
62 | COVERAGE_DEFINE(ofproto_dpif_xlate); |
63 | COVERAGE_DEFINE(facet_changed_rule); | |
abe529af BP |
64 | COVERAGE_DEFINE(facet_revalidate); |
65 | COVERAGE_DEFINE(facet_unexpected); | |
9d6ac44e | 66 | COVERAGE_DEFINE(facet_suppress); |
abe529af | 67 | |
29901626 | 68 | /* Maximum depth of flow table recursion (due to resubmit actions) in a |
abe529af | 69 | * flow translation. */ |
1642690c | 70 | #define MAX_RESUBMIT_RECURSION 64 |
abe529af | 71 | |
9cdaaebe BP |
72 | /* Number of implemented OpenFlow tables. */ |
73 | enum { N_TABLES = 255 }; | |
c57b2226 BP |
74 | enum { TBL_INTERNAL = N_TABLES - 1 }; /* Used for internal hidden rules. */ |
75 | BUILD_ASSERT_DECL(N_TABLES >= 2 && N_TABLES <= 255); | |
9cdaaebe | 76 | |
abe529af BP |
77 | struct ofport_dpif; |
78 | struct ofproto_dpif; | |
79 | ||
80 | struct rule_dpif { | |
81 | struct rule up; | |
82 | ||
abe529af BP |
83 | /* These statistics: |
84 | * | |
85 | * - Do include packets and bytes from facets that have been deleted or | |
86 | * whose own statistics have been folded into the rule. | |
87 | * | |
88 | * - Do include packets and bytes sent "by hand" that were accounted to | |
89 | * the rule without any facet being involved (this is a rare corner | |
90 | * case in rule_execute()). | |
91 | * | |
92 | * - Do not include packet or bytes that can be obtained from any facet's | |
93 | * packet_count or byte_count member or that can be obtained from the | |
b0f7b9b5 | 94 | * datapath by, e.g., dpif_flow_get() for any subfacet. |
abe529af BP |
95 | */ |
96 | uint64_t packet_count; /* Number of packets received. */ | |
97 | uint64_t byte_count; /* Number of bytes received. */ | |
98 | ||
54a9cbc9 BP |
99 | tag_type tag; /* Caches rule_calculate_tag() result. */ |
100 | ||
abe529af BP |
101 | struct list facets; /* List of "struct facet"s. */ |
102 | }; | |
103 | ||
104 | static struct rule_dpif *rule_dpif_cast(const struct rule *rule) | |
105 | { | |
106 | return rule ? CONTAINER_OF(rule, struct rule_dpif, up) : NULL; | |
107 | } | |
108 | ||
29901626 | 109 | static struct rule_dpif *rule_dpif_lookup(struct ofproto_dpif *, |
c57b2226 BP |
110 | const struct flow *); |
111 | static struct rule_dpif *rule_dpif_lookup__(struct ofproto_dpif *, | |
112 | const struct flow *, | |
113 | uint8_t table); | |
c376f9a3 IY |
114 | static struct rule_dpif *rule_dpif_miss_rule(struct ofproto_dpif *ofproto, |
115 | const struct flow *flow); | |
abe529af | 116 | |
112bc5f4 BP |
117 | static void rule_credit_stats(struct rule_dpif *, |
118 | const struct dpif_flow_stats *); | |
18b2a258 | 119 | static void flow_push_stats(struct rule_dpif *, const struct flow *, |
112bc5f4 | 120 | const struct dpif_flow_stats *); |
822d9414 | 121 | static tag_type rule_calculate_tag(const struct flow *, |
5cb7a798 | 122 | const struct minimask *, uint32_t basis); |
b0f7b9b5 BP |
123 | static void rule_invalidate(const struct rule_dpif *); |
124 | ||
abe529af BP |
125 | #define MAX_MIRRORS 32 |
126 | typedef uint32_t mirror_mask_t; | |
127 | #define MIRROR_MASK_C(X) UINT32_C(X) | |
128 | BUILD_ASSERT_DECL(sizeof(mirror_mask_t) * CHAR_BIT >= MAX_MIRRORS); | |
129 | struct ofmirror { | |
130 | struct ofproto_dpif *ofproto; /* Owning ofproto. */ | |
131 | size_t idx; /* In ofproto's "mirrors" array. */ | |
132 | void *aux; /* Key supplied by ofproto's client. */ | |
133 | char *name; /* Identifier for log messages. */ | |
134 | ||
135 | /* Selection criteria. */ | |
136 | struct hmapx srcs; /* Contains "struct ofbundle *"s. */ | |
137 | struct hmapx dsts; /* Contains "struct ofbundle *"s. */ | |
138 | unsigned long *vlans; /* Bitmap of chosen VLANs, NULL selects all. */ | |
139 | ||
9ba15e2a | 140 | /* Output (exactly one of out == NULL and out_vlan == -1 is true). */ |
abe529af BP |
141 | struct ofbundle *out; /* Output port or NULL. */ |
142 | int out_vlan; /* Output VLAN or -1. */ | |
9ba15e2a | 143 | mirror_mask_t dup_mirrors; /* Bitmap of mirrors with the same output. */ |
9d24de3b JP |
144 | |
145 | /* Counters. */ | |
146 | int64_t packet_count; /* Number of packets sent. */ | |
147 | int64_t byte_count; /* Number of bytes sent. */ | |
abe529af BP |
148 | }; |
149 | ||
150 | static void mirror_destroy(struct ofmirror *); | |
9d24de3b JP |
151 | static void update_mirror_stats(struct ofproto_dpif *ofproto, |
152 | mirror_mask_t mirrors, | |
153 | uint64_t packets, uint64_t bytes); | |
abe529af | 154 | |
abe529af | 155 | struct ofbundle { |
abe529af | 156 | struct hmap_node hmap_node; /* In struct ofproto's "bundles" hmap. */ |
6e492d81 | 157 | struct ofproto_dpif *ofproto; /* Owning ofproto. */ |
abe529af BP |
158 | void *aux; /* Key supplied by ofproto's client. */ |
159 | char *name; /* Identifier for log messages. */ | |
160 | ||
161 | /* Configuration. */ | |
162 | struct list ports; /* Contains "struct ofport"s. */ | |
ecac4ebf | 163 | enum port_vlan_mode vlan_mode; /* VLAN mode */ |
abe529af BP |
164 | int vlan; /* -1=trunk port, else a 12-bit VLAN ID. */ |
165 | unsigned long *trunks; /* Bitmap of trunked VLANs, if 'vlan' == -1. | |
166 | * NULL if all VLANs are trunked. */ | |
167 | struct lacp *lacp; /* LACP if LACP is enabled, otherwise NULL. */ | |
168 | struct bond *bond; /* Nonnull iff more than one port. */ | |
5e9ceccd | 169 | bool use_priority_tags; /* Use 802.1p tag for frames in VLAN 0? */ |
abe529af BP |
170 | |
171 | /* Status. */ | |
9e1fd49b | 172 | bool floodable; /* True if no port has OFPUTIL_PC_NO_FLOOD set. */ |
abe529af BP |
173 | |
174 | /* Port mirroring info. */ | |
175 | mirror_mask_t src_mirrors; /* Mirrors triggered when packet received. */ | |
176 | mirror_mask_t dst_mirrors; /* Mirrors triggered when packet sent. */ | |
177 | mirror_mask_t mirror_out; /* Mirrors that output to this bundle. */ | |
178 | }; | |
179 | ||
180 | static void bundle_remove(struct ofport *); | |
7bde8dd8 | 181 | static void bundle_update(struct ofbundle *); |
abe529af BP |
182 | static void bundle_destroy(struct ofbundle *); |
183 | static void bundle_del_port(struct ofport_dpif *); | |
184 | static void bundle_run(struct ofbundle *); | |
185 | static void bundle_wait(struct ofbundle *); | |
4acbc98d | 186 | static struct ofbundle *lookup_input_bundle(const struct ofproto_dpif *, |
70c2fd56 BP |
187 | uint16_t in_port, bool warn, |
188 | struct ofport_dpif **in_ofportp); | |
abe529af | 189 | |
33158a18 JP |
190 | /* A controller may use OFPP_NONE as the ingress port to indicate that |
191 | * it did not arrive on a "real" port. 'ofpp_none_bundle' exists for | |
192 | * when an input bundle is needed for validation (e.g., mirroring or | |
193 | * OFPP_NORMAL processing). It is not connected to an 'ofproto' or have | |
194 | * any 'port' structs, so care must be taken when dealing with it. */ | |
195 | static struct ofbundle ofpp_none_bundle = { | |
196 | .name = "OFPP_NONE", | |
197 | .vlan_mode = PORT_VLAN_TRUNK | |
198 | }; | |
199 | ||
21f7563c JP |
200 | static void stp_run(struct ofproto_dpif *ofproto); |
201 | static void stp_wait(struct ofproto_dpif *ofproto); | |
851bf71d EJ |
202 | static int set_stp_port(struct ofport *, |
203 | const struct ofproto_port_stp_settings *); | |
21f7563c | 204 | |
5da5ec37 BP |
205 | static bool ofbundle_includes_vlan(const struct ofbundle *, uint16_t vlan); |
206 | ||
abe529af BP |
207 | struct action_xlate_ctx { |
208 | /* action_xlate_ctx_init() initializes these members. */ | |
209 | ||
210 | /* The ofproto. */ | |
211 | struct ofproto_dpif *ofproto; | |
212 | ||
213 | /* Flow to which the OpenFlow actions apply. xlate_actions() will modify | |
214 | * this flow when actions change header fields. */ | |
215 | struct flow flow; | |
216 | ||
217 | /* The packet corresponding to 'flow', or a null pointer if we are | |
218 | * revalidating without a packet to refer to. */ | |
219 | const struct ofpbuf *packet; | |
220 | ||
3de9590b BP |
221 | /* Should OFPP_NORMAL update the MAC learning table? Should "learn" |
222 | * actions update the flow table? | |
223 | * | |
224 | * We want to update these tables if we are actually processing a packet, | |
225 | * or if we are accounting for packets that the datapath has processed, but | |
226 | * not if we are just revalidating. */ | |
227 | bool may_learn; | |
75a75043 | 228 | |
18b2a258 BP |
229 | /* The rule that we are currently translating, or NULL. */ |
230 | struct rule_dpif *rule; | |
54834960 | 231 | |
0e553d9c BP |
232 | /* Union of the set of TCP flags seen so far in this flow. (Used only by |
233 | * NXAST_FIN_TIMEOUT. Set to zero to avoid updating updating rules' | |
234 | * timeouts.) */ | |
235 | uint8_t tcp_flags; | |
236 | ||
112bc5f4 BP |
237 | /* If nonnull, flow translation calls this function just before executing a |
238 | * resubmit or OFPP_TABLE action. In addition, disables logging of traces | |
239 | * when the recursion depth is exceeded. | |
240 | * | |
241 | * 'rule' is the rule being submitted into. It will be null if the | |
242 | * resubmit or OFPP_TABLE action didn't find a matching rule. | |
243 | * | |
244 | * This is normally null so the client has to set it manually after | |
245 | * calling action_xlate_ctx_init(). */ | |
246 | void (*resubmit_hook)(struct action_xlate_ctx *, struct rule_dpif *rule); | |
247 | ||
479df176 BP |
248 | /* If nonnull, flow translation calls this function to report some |
249 | * significant decision, e.g. to explain why OFPP_NORMAL translation | |
250 | * dropped a packet. */ | |
251 | void (*report_hook)(struct action_xlate_ctx *, const char *s); | |
252 | ||
112bc5f4 BP |
253 | /* If nonnull, flow translation credits the specified statistics to each |
254 | * rule reached through a resubmit or OFPP_TABLE action. | |
abe529af BP |
255 | * |
256 | * This is normally null so the client has to set it manually after | |
257 | * calling action_xlate_ctx_init(). */ | |
112bc5f4 | 258 | const struct dpif_flow_stats *resubmit_stats; |
abe529af | 259 | |
abe529af BP |
260 | /* xlate_actions() initializes and uses these members. The client might want |
261 | * to look at them after it returns. */ | |
262 | ||
263 | struct ofpbuf *odp_actions; /* Datapath actions. */ | |
75a75043 | 264 | tag_type tags; /* Tags associated with actions. */ |
6a7e895f | 265 | enum slow_path_reason slow; /* 0 if fast path may be used. */ |
75a75043 BP |
266 | bool has_learn; /* Actions include NXAST_LEARN? */ |
267 | bool has_normal; /* Actions output to OFPP_NORMAL? */ | |
0e553d9c | 268 | bool has_fin_timeout; /* Actions include NXAST_FIN_TIMEOUT? */ |
abe529af | 269 | uint16_t nf_output_iface; /* Output interface index for NetFlow. */ |
9d24de3b | 270 | mirror_mask_t mirrors; /* Bitmap of associated mirrors. */ |
abe529af BP |
271 | |
272 | /* xlate_actions() initializes and uses these members, but the client has no | |
273 | * reason to look at them. */ | |
274 | ||
275 | int recurse; /* Recursion level, via xlate_table_action. */ | |
6a6455e5 | 276 | bool max_resubmit_trigger; /* Recursed too deeply during translation. */ |
b3e9b2ed | 277 | struct flow base_flow; /* Flow at the last commit. */ |
deedf7e7 | 278 | uint32_t orig_skb_priority; /* Priority when packet arrived. */ |
29901626 | 279 | uint8_t table_id; /* OpenFlow table ID where flow was found. */ |
6ff686f2 | 280 | uint32_t sflow_n_outputs; /* Number of output ports. */ |
9b56fe13 | 281 | uint32_t sflow_odp_port; /* Output port for composing sFlow action. */ |
6ff686f2 | 282 | uint16_t user_cookie_offset;/* Used for user_action_cookie fixup. */ |
848e8809 | 283 | bool exit; /* No further actions should be processed. */ |
ccb7c863 | 284 | struct flow orig_flow; /* Copy of original flow. */ |
abe529af BP |
285 | }; |
286 | ||
287 | static void action_xlate_ctx_init(struct action_xlate_ctx *, | |
288 | struct ofproto_dpif *, const struct flow *, | |
18b2a258 | 289 | ovs_be16 initial_tci, struct rule_dpif *, |
0e553d9c | 290 | uint8_t tcp_flags, const struct ofpbuf *); |
050ac423 | 291 | static void xlate_actions(struct action_xlate_ctx *, |
f25d0cf3 | 292 | const struct ofpact *ofpacts, size_t ofpacts_len, |
050ac423 BP |
293 | struct ofpbuf *odp_actions); |
294 | static void xlate_actions_for_side_effects(struct action_xlate_ctx *, | |
f25d0cf3 BP |
295 | const struct ofpact *ofpacts, |
296 | size_t ofpacts_len); | |
abe529af | 297 | |
6a7e895f BP |
298 | static size_t put_userspace_action(const struct ofproto_dpif *, |
299 | struct ofpbuf *odp_actions, | |
300 | const struct flow *, | |
301 | const union user_action_cookie *); | |
302 | ||
303 | static void compose_slow_path(const struct ofproto_dpif *, const struct flow *, | |
304 | enum slow_path_reason, | |
305 | uint64_t *stub, size_t stub_size, | |
306 | const struct nlattr **actionsp, | |
307 | size_t *actions_lenp); | |
308 | ||
479df176 BP |
309 | static void xlate_report(struct action_xlate_ctx *ctx, const char *s); |
310 | ||
6a7e895f BP |
311 | /* A subfacet (see "struct subfacet" below) has three possible installation |
312 | * states: | |
313 | * | |
314 | * - SF_NOT_INSTALLED: Not installed in the datapath. This will only be the | |
315 | * case just after the subfacet is created, just before the subfacet is | |
316 | * destroyed, or if the datapath returns an error when we try to install a | |
317 | * subfacet. | |
318 | * | |
319 | * - SF_FAST_PATH: The subfacet's actions are installed in the datapath. | |
320 | * | |
321 | * - SF_SLOW_PATH: An action that sends every packet for the subfacet through | |
322 | * ofproto_dpif is installed in the datapath. | |
323 | */ | |
324 | enum subfacet_path { | |
325 | SF_NOT_INSTALLED, /* No datapath flow for this subfacet. */ | |
326 | SF_FAST_PATH, /* Full actions are installed. */ | |
327 | SF_SLOW_PATH, /* Send-to-userspace action is installed. */ | |
328 | }; | |
329 | ||
330 | static const char *subfacet_path_to_string(enum subfacet_path); | |
331 | ||
5f5fbd17 BP |
332 | /* A dpif flow and actions associated with a facet. |
333 | * | |
334 | * See also the large comment on struct facet. */ | |
335 | struct subfacet { | |
336 | /* Owners. */ | |
337 | struct hmap_node hmap_node; /* In struct ofproto_dpif 'subfacets' list. */ | |
338 | struct list list_node; /* In struct facet's 'facets' list. */ | |
339 | struct facet *facet; /* Owning facet. */ | |
340 | ||
341 | /* Key. | |
342 | * | |
343 | * To save memory in the common case, 'key' is NULL if 'key_fitness' is | |
344 | * ODP_FIT_PERFECT, that is, odp_flow_key_from_flow() can accurately | |
345 | * regenerate the ODP flow key from ->facet->flow. */ | |
346 | enum odp_key_fitness key_fitness; | |
347 | struct nlattr *key; | |
348 | int key_len; | |
349 | ||
350 | long long int used; /* Time last used; time created if not used. */ | |
351 | ||
352 | uint64_t dp_packet_count; /* Last known packet count in the datapath. */ | |
353 | uint64_t dp_byte_count; /* Last known byte count in the datapath. */ | |
354 | ||
355 | /* Datapath actions. | |
356 | * | |
357 | * These should be essentially identical for every subfacet in a facet, but | |
358 | * may differ in trivial ways due to VLAN splinters. */ | |
359 | size_t actions_len; /* Number of bytes in actions[]. */ | |
360 | struct nlattr *actions; /* Datapath actions. */ | |
361 | ||
6a7e895f BP |
362 | enum slow_path_reason slow; /* 0 if fast path may be used. */ |
363 | enum subfacet_path path; /* Installed in datapath? */ | |
5f5fbd17 BP |
364 | |
365 | /* This value is normally the same as ->facet->flow.vlan_tci. Only VLAN | |
366 | * splinters can cause it to differ. This value should be removed when | |
367 | * the VLAN splinters feature is no longer needed. */ | |
368 | ovs_be16 initial_tci; /* Initial VLAN TCI value. */ | |
369 | }; | |
370 | ||
1d85f9e5 JP |
371 | #define SUBFACET_DESTROY_MAX_BATCH 50 |
372 | ||
5f5fbd17 BP |
373 | static struct subfacet *subfacet_create(struct facet *, enum odp_key_fitness, |
374 | const struct nlattr *key, | |
459b16a1 BP |
375 | size_t key_len, ovs_be16 initial_tci, |
376 | long long int now); | |
5f5fbd17 | 377 | static struct subfacet *subfacet_find(struct ofproto_dpif *, |
acf60855 JP |
378 | const struct nlattr *key, size_t key_len, |
379 | uint32_t key_hash, | |
380 | const struct flow *flow); | |
5f5fbd17 BP |
381 | static void subfacet_destroy(struct subfacet *); |
382 | static void subfacet_destroy__(struct subfacet *); | |
1d85f9e5 JP |
383 | static void subfacet_destroy_batch(struct ofproto_dpif *, |
384 | struct subfacet **, int n); | |
5f5fbd17 BP |
385 | static void subfacet_get_key(struct subfacet *, struct odputil_keybuf *, |
386 | struct ofpbuf *key); | |
387 | static void subfacet_reset_dp_stats(struct subfacet *, | |
388 | struct dpif_flow_stats *); | |
389 | static void subfacet_update_time(struct subfacet *, long long int used); | |
390 | static void subfacet_update_stats(struct subfacet *, | |
391 | const struct dpif_flow_stats *); | |
392 | static void subfacet_make_actions(struct subfacet *, | |
5fe20d5d BP |
393 | const struct ofpbuf *packet, |
394 | struct ofpbuf *odp_actions); | |
5f5fbd17 BP |
395 | static int subfacet_install(struct subfacet *, |
396 | const struct nlattr *actions, size_t actions_len, | |
6a7e895f | 397 | struct dpif_flow_stats *, enum slow_path_reason); |
5f5fbd17 BP |
398 | static void subfacet_uninstall(struct subfacet *); |
399 | ||
6a7e895f BP |
400 | static enum subfacet_path subfacet_want_path(enum slow_path_reason); |
401 | ||
b0f7b9b5 BP |
402 | /* An exact-match instantiation of an OpenFlow flow. |
403 | * | |
404 | * A facet associates a "struct flow", which represents the Open vSwitch | |
b95fc6ba BP |
405 | * userspace idea of an exact-match flow, with one or more subfacets. Each |
406 | * subfacet tracks the datapath's idea of the exact-match flow equivalent to | |
407 | * the facet. When the kernel module (or other dpif implementation) and Open | |
408 | * vSwitch userspace agree on the definition of a flow key, there is exactly | |
409 | * one subfacet per facet. If the dpif implementation supports more-specific | |
410 | * flow matching than userspace, however, a facet can have more than one | |
411 | * subfacet, each of which corresponds to some distinction in flow that | |
412 | * userspace simply doesn't understand. | |
b0f7b9b5 BP |
413 | * |
414 | * Flow expiration works in terms of subfacets, so a facet must have at least | |
415 | * one subfacet or it will never expire, leaking memory. */ | |
abe529af | 416 | struct facet { |
b0f7b9b5 BP |
417 | /* Owners. */ |
418 | struct hmap_node hmap_node; /* In owning ofproto's 'facets' hmap. */ | |
419 | struct list list_node; /* In owning rule's 'facets' list. */ | |
420 | struct rule_dpif *rule; /* Owning rule. */ | |
421 | ||
422 | /* Owned data. */ | |
423 | struct list subfacets; | |
abe529af BP |
424 | long long int used; /* Time last used; time created if not used. */ |
425 | ||
b0f7b9b5 BP |
426 | /* Key. */ |
427 | struct flow flow; | |
428 | ||
abe529af BP |
429 | /* These statistics: |
430 | * | |
431 | * - Do include packets and bytes sent "by hand", e.g. with | |
432 | * dpif_execute(). | |
433 | * | |
434 | * - Do include packets and bytes that were obtained from the datapath | |
b0f7b9b5 | 435 | * when a subfacet's statistics were reset (e.g. dpif_flow_put() with |
abe529af | 436 | * DPIF_FP_ZERO_STATS). |
b0f7b9b5 BP |
437 | * |
438 | * - Do not include packets or bytes that can be obtained from the | |
439 | * datapath for any existing subfacet. | |
abe529af BP |
440 | */ |
441 | uint64_t packet_count; /* Number of packets received. */ | |
442 | uint64_t byte_count; /* Number of bytes received. */ | |
443 | ||
b0f7b9b5 | 444 | /* Resubmit statistics. */ |
9d24de3b JP |
445 | uint64_t prev_packet_count; /* Number of packets from last stats push. */ |
446 | uint64_t prev_byte_count; /* Number of bytes from last stats push. */ | |
447 | long long int prev_used; /* Used time from last stats push. */ | |
abe529af | 448 | |
b0f7b9b5 | 449 | /* Accounting. */ |
907a4c5e | 450 | uint64_t accounted_bytes; /* Bytes processed by facet_account(). */ |
b0f7b9b5 | 451 | struct netflow_flow nf_flow; /* Per-flow NetFlow tracking data. */ |
0e553d9c | 452 | uint8_t tcp_flags; /* TCP flags seen for this 'rule'. */ |
abe529af | 453 | |
b95fc6ba BP |
454 | /* Properties of datapath actions. |
455 | * | |
456 | * Every subfacet has its own actions because actions can differ slightly | |
457 | * between splintered and non-splintered subfacets due to the VLAN tag | |
458 | * being initially different (present vs. absent). All of them have these | |
459 | * properties in common so we just store one copy of them here. */ | |
75a75043 BP |
460 | bool has_learn; /* Actions include NXAST_LEARN? */ |
461 | bool has_normal; /* Actions output to OFPP_NORMAL? */ | |
0e553d9c | 462 | bool has_fin_timeout; /* Actions include NXAST_FIN_TIMEOUT? */ |
b0f7b9b5 | 463 | tag_type tags; /* Tags that would require revalidation. */ |
9d24de3b | 464 | mirror_mask_t mirrors; /* Bitmap of dependent mirrors. */ |
26cd7e34 BP |
465 | |
466 | /* Storage for a single subfacet, to reduce malloc() time and space | |
467 | * overhead. (A facet always has at least one subfacet and in the common | |
468 | * case has exactly one subfacet.) */ | |
469 | struct subfacet one_subfacet; | |
abe529af BP |
470 | }; |
471 | ||
2b459b83 BP |
472 | static struct facet *facet_create(struct rule_dpif *, |
473 | const struct flow *, uint32_t hash); | |
15baa734 | 474 | static void facet_remove(struct facet *); |
abe529af BP |
475 | static void facet_free(struct facet *); |
476 | ||
2b459b83 BP |
477 | static struct facet *facet_find(struct ofproto_dpif *, |
478 | const struct flow *, uint32_t hash); | |
abe529af | 479 | static struct facet *facet_lookup_valid(struct ofproto_dpif *, |
2b459b83 | 480 | const struct flow *, uint32_t hash); |
c57b2226 | 481 | static void facet_revalidate(struct facet *); |
6814e51f | 482 | static bool facet_check_consistency(struct facet *); |
abe529af | 483 | |
15baa734 | 484 | static void facet_flush_stats(struct facet *); |
abe529af | 485 | |
15baa734 | 486 | static void facet_update_time(struct facet *, long long int used); |
bbb5d219 | 487 | static void facet_reset_counters(struct facet *); |
abe529af | 488 | static void facet_push_stats(struct facet *); |
3de9590b BP |
489 | static void facet_learn(struct facet *); |
490 | static void facet_account(struct facet *); | |
abe529af BP |
491 | |
492 | static bool facet_is_controller_flow(struct facet *); | |
493 | ||
abe529af | 494 | struct ofport_dpif { |
acf60855 | 495 | struct hmap_node odp_port_node; /* In dpif_backer's "odp_to_ofport_map". */ |
abe529af BP |
496 | struct ofport up; |
497 | ||
498 | uint32_t odp_port; | |
499 | struct ofbundle *bundle; /* Bundle that contains this port, if any. */ | |
500 | struct list bundle_node; /* In struct ofbundle's "ports" list. */ | |
501 | struct cfm *cfm; /* Connectivity Fault Management, if any. */ | |
502 | tag_type tag; /* Tag associated with this port. */ | |
00794817 | 503 | uint32_t bond_stable_id; /* stable_id to use as bond slave, or 0. */ |
015e08bc | 504 | bool may_enable; /* May be enabled in bonds. */ |
3e5b3fdb | 505 | long long int carrier_seq; /* Carrier status changes. */ |
21f7563c | 506 | |
52a90c29 | 507 | /* Spanning tree. */ |
21f7563c JP |
508 | struct stp_port *stp_port; /* Spanning Tree Protocol, if any. */ |
509 | enum stp_state stp_state; /* Always STP_DISABLED if STP not in use. */ | |
510 | long long int stp_state_entered; | |
8b36f51e EJ |
511 | |
512 | struct hmap priorities; /* Map of attached 'priority_to_dscp's. */ | |
52a90c29 BP |
513 | |
514 | /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.) | |
515 | * | |
516 | * This is deprecated. It is only for compatibility with broken device | |
517 | * drivers in old versions of Linux that do not properly support VLANs when | |
518 | * VLAN devices are not used. When broken device drivers are no longer in | |
519 | * widespread use, we will delete these interfaces. */ | |
520 | uint16_t realdev_ofp_port; | |
521 | int vlandev_vid; | |
8b36f51e EJ |
522 | }; |
523 | ||
524 | /* Node in 'ofport_dpif''s 'priorities' map. Used to maintain a map from | |
525 | * 'priority' (the datapath's term for QoS queue) to the dscp bits which all | |
526 | * traffic egressing the 'ofport' with that priority should be marked with. */ | |
527 | struct priority_to_dscp { | |
528 | struct hmap_node hmap_node; /* Node in 'ofport_dpif''s 'priorities' map. */ | |
529 | uint32_t priority; /* Priority of this queue (see struct flow). */ | |
530 | ||
531 | uint8_t dscp; /* DSCP bits to mark outgoing traffic with. */ | |
abe529af BP |
532 | }; |
533 | ||
52a90c29 BP |
534 | /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.) |
535 | * | |
536 | * This is deprecated. It is only for compatibility with broken device drivers | |
537 | * in old versions of Linux that do not properly support VLANs when VLAN | |
538 | * devices are not used. When broken device drivers are no longer in | |
539 | * widespread use, we will delete these interfaces. */ | |
540 | struct vlan_splinter { | |
541 | struct hmap_node realdev_vid_node; | |
542 | struct hmap_node vlandev_node; | |
543 | uint16_t realdev_ofp_port; | |
544 | uint16_t vlandev_ofp_port; | |
545 | int vid; | |
546 | }; | |
547 | ||
548 | static uint32_t vsp_realdev_to_vlandev(const struct ofproto_dpif *, | |
549 | uint32_t realdev, ovs_be16 vlan_tci); | |
b98d8985 | 550 | static bool vsp_adjust_flow(const struct ofproto_dpif *, struct flow *); |
52a90c29 BP |
551 | static void vsp_remove(struct ofport_dpif *); |
552 | static void vsp_add(struct ofport_dpif *, uint16_t realdev_ofp_port, int vid); | |
553 | ||
e1b1d06a JP |
554 | static uint32_t ofp_port_to_odp_port(const struct ofproto_dpif *, |
555 | uint16_t ofp_port); | |
556 | static uint16_t odp_port_to_ofp_port(const struct ofproto_dpif *, | |
557 | uint32_t odp_port); | |
558 | ||
abe529af BP |
559 | static struct ofport_dpif * |
560 | ofport_dpif_cast(const struct ofport *ofport) | |
561 | { | |
562 | assert(ofport->ofproto->ofproto_class == &ofproto_dpif_class); | |
563 | return ofport ? CONTAINER_OF(ofport, struct ofport_dpif, up) : NULL; | |
564 | } | |
565 | ||
566 | static void port_run(struct ofport_dpif *); | |
0aa66d6e | 567 | static void port_run_fast(struct ofport_dpif *); |
abe529af | 568 | static void port_wait(struct ofport_dpif *); |
a5610457 | 569 | static int set_cfm(struct ofport *, const struct cfm_settings *); |
8b36f51e | 570 | static void ofport_clear_priorities(struct ofport_dpif *); |
abe529af | 571 | |
7ee20df1 BP |
572 | struct dpif_completion { |
573 | struct list list_node; | |
574 | struct ofoperation *op; | |
575 | }; | |
576 | ||
54a9cbc9 BP |
577 | /* Extra information about a classifier table. |
578 | * Currently used just for optimized flow revalidation. */ | |
579 | struct table_dpif { | |
580 | /* If either of these is nonnull, then this table has a form that allows | |
581 | * flows to be tagged to avoid revalidating most flows for the most common | |
582 | * kinds of flow table changes. */ | |
583 | struct cls_table *catchall_table; /* Table that wildcards all fields. */ | |
584 | struct cls_table *other_table; /* Table with any other wildcard set. */ | |
585 | uint32_t basis; /* Keeps each table's tags separate. */ | |
586 | }; | |
587 | ||
3c4a309c BP |
588 | /* Reasons that we might need to revalidate every facet, and corresponding |
589 | * coverage counters. | |
590 | * | |
591 | * A value of 0 means that there is no need to revalidate. | |
592 | * | |
593 | * It would be nice to have some cleaner way to integrate with coverage | |
594 | * counters, but with only a few reasons I guess this is good enough for | |
595 | * now. */ | |
596 | enum revalidate_reason { | |
597 | REV_RECONFIGURE = 1, /* Switch configuration changed. */ | |
598 | REV_STP, /* Spanning tree protocol port status change. */ | |
599 | REV_PORT_TOGGLED, /* Port enabled or disabled by CFM, LACP, ...*/ | |
600 | REV_FLOW_TABLE, /* Flow table changed. */ | |
601 | REV_INCONSISTENCY /* Facet self-check failed. */ | |
602 | }; | |
603 | COVERAGE_DEFINE(rev_reconfigure); | |
604 | COVERAGE_DEFINE(rev_stp); | |
605 | COVERAGE_DEFINE(rev_port_toggled); | |
606 | COVERAGE_DEFINE(rev_flow_table); | |
607 | COVERAGE_DEFINE(rev_inconsistency); | |
608 | ||
acf60855 JP |
609 | /* All datapaths of a given type share a single dpif backer instance. */ |
610 | struct dpif_backer { | |
611 | char *type; | |
612 | int refcount; | |
613 | struct dpif *dpif; | |
614 | struct timer next_expiration; | |
615 | struct hmap odp_to_ofport_map; /* ODP port to ofport mapping. */ | |
616 | }; | |
617 | ||
618 | /* All existing ofproto_backer instances, indexed by ofproto->up.type. */ | |
619 | static struct shash all_dpif_backers = SHASH_INITIALIZER(&all_dpif_backers); | |
620 | ||
621 | static struct ofport_dpif * | |
622 | odp_port_to_ofport(const struct dpif_backer *, uint32_t odp_port); | |
623 | ||
abe529af | 624 | struct ofproto_dpif { |
b44a10b7 | 625 | struct hmap_node all_ofproto_dpifs_node; /* In 'all_ofproto_dpifs'. */ |
abe529af | 626 | struct ofproto up; |
acf60855 | 627 | struct dpif_backer *backer; |
abe529af | 628 | |
c57b2226 BP |
629 | /* Special OpenFlow rules. */ |
630 | struct rule_dpif *miss_rule; /* Sends flow table misses to controller. */ | |
631 | struct rule_dpif *no_packet_in_rule; /* Drops flow table misses. */ | |
632 | ||
6c1491fb BP |
633 | /* Statistics. */ |
634 | uint64_t n_matches; | |
635 | ||
abe529af BP |
636 | /* Bridging. */ |
637 | struct netflow *netflow; | |
bae473fe | 638 | struct dpif_sflow *sflow; |
abe529af BP |
639 | struct hmap bundles; /* Contains "struct ofbundle"s. */ |
640 | struct mac_learning *ml; | |
641 | struct ofmirror *mirrors[MAX_MIRRORS]; | |
ccb7c863 | 642 | bool has_mirrors; |
abe529af BP |
643 | bool has_bonded_bundles; |
644 | ||
abe529af BP |
645 | /* Facets. */ |
646 | struct hmap facets; | |
b0f7b9b5 | 647 | struct hmap subfacets; |
9d6ac44e | 648 | struct governor *governor; |
54a9cbc9 BP |
649 | |
650 | /* Revalidation. */ | |
651 | struct table_dpif tables[N_TABLES]; | |
3c4a309c | 652 | enum revalidate_reason need_revalidate; |
abe529af | 653 | struct tag_set revalidate_set; |
7ee20df1 BP |
654 | |
655 | /* Support for debugging async flow mods. */ | |
656 | struct list completions; | |
daff3353 EJ |
657 | |
658 | bool has_bundle_action; /* True when the first bundle action appears. */ | |
6527c598 PS |
659 | struct netdev_stats stats; /* To account packets generated and consumed in |
660 | * userspace. */ | |
21f7563c JP |
661 | |
662 | /* Spanning tree. */ | |
663 | struct stp *stp; | |
664 | long long int stp_last_tick; | |
52a90c29 BP |
665 | |
666 | /* VLAN splinters. */ | |
667 | struct hmap realdev_vid_map; /* (realdev,vid) -> vlandev. */ | |
668 | struct hmap vlandev_map; /* vlandev -> (realdev,vid). */ | |
e1b1d06a | 669 | |
acf60855 JP |
670 | /* Ports. */ |
671 | struct sset ports; /* Set of port names. */ | |
672 | struct sset port_poll_set; /* Queued names for port_poll() reply. */ | |
673 | int port_poll_errno; /* Last errno for port_poll() reply. */ | |
abe529af BP |
674 | }; |
675 | ||
7ee20df1 BP |
676 | /* Defer flow mod completion until "ovs-appctl ofproto/unclog"? (Useful only |
677 | * for debugging the asynchronous flow_mod implementation.) */ | |
678 | static bool clogged; | |
679 | ||
b44a10b7 BP |
680 | /* All existing ofproto_dpif instances, indexed by ->up.name. */ |
681 | static struct hmap all_ofproto_dpifs = HMAP_INITIALIZER(&all_ofproto_dpifs); | |
682 | ||
abe529af BP |
683 | static void ofproto_dpif_unixctl_init(void); |
684 | ||
685 | static struct ofproto_dpif * | |
686 | ofproto_dpif_cast(const struct ofproto *ofproto) | |
687 | { | |
688 | assert(ofproto->ofproto_class == &ofproto_dpif_class); | |
689 | return CONTAINER_OF(ofproto, struct ofproto_dpif, up); | |
690 | } | |
691 | ||
4acbc98d | 692 | static struct ofport_dpif *get_ofp_port(const struct ofproto_dpif *, |
abe529af | 693 | uint16_t ofp_port); |
4acbc98d | 694 | static struct ofport_dpif *get_odp_port(const struct ofproto_dpif *, |
abe529af | 695 | uint32_t odp_port); |
6a6455e5 EJ |
696 | static void ofproto_trace(struct ofproto_dpif *, const struct flow *, |
697 | const struct ofpbuf *, ovs_be16 initial_tci, | |
698 | struct ds *); | |
abe529af BP |
699 | |
700 | /* Packet processing. */ | |
701 | static void update_learning_table(struct ofproto_dpif *, | |
702 | const struct flow *, int vlan, | |
703 | struct ofbundle *); | |
501f8d1f BP |
704 | /* Upcalls. */ |
705 | #define FLOW_MISS_MAX_BATCH 50 | |
acf60855 | 706 | static int handle_upcalls(struct dpif_backer *, unsigned int max_batch); |
abe529af BP |
707 | |
708 | /* Flow expiration. */ | |
acf60855 | 709 | static int expire(struct dpif_backer *); |
abe529af | 710 | |
6fca1ffb BP |
711 | /* NetFlow. */ |
712 | static void send_netflow_active_timeouts(struct ofproto_dpif *); | |
713 | ||
abe529af | 714 | /* Utilities. */ |
52a90c29 | 715 | static int send_packet(const struct ofport_dpif *, struct ofpbuf *packet); |
6a7d1a39 BP |
716 | static size_t compose_sflow_action(const struct ofproto_dpif *, |
717 | struct ofpbuf *odp_actions, | |
718 | const struct flow *, uint32_t odp_port); | |
c06bba01 JP |
719 | static void add_mirror_actions(struct action_xlate_ctx *ctx, |
720 | const struct flow *flow); | |
abe529af BP |
721 | /* Global variables. */ |
722 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
acf60855 JP |
723 | |
724 | /* Initial mappings of port to bridge mappings. */ | |
725 | static struct shash init_ofp_ports = SHASH_INITIALIZER(&init_ofp_ports); | |
abe529af BP |
726 | \f |
727 | /* Factory functions. */ | |
728 | ||
b0408fca | 729 | static void |
acf60855 | 730 | init(const struct shash *iface_hints) |
b0408fca | 731 | { |
acf60855 JP |
732 | struct shash_node *node; |
733 | ||
734 | /* Make a local copy, since we don't own 'iface_hints' elements. */ | |
735 | SHASH_FOR_EACH(node, iface_hints) { | |
736 | const struct iface_hint *orig_hint = node->data; | |
737 | struct iface_hint *new_hint = xmalloc(sizeof *new_hint); | |
738 | ||
739 | new_hint->br_name = xstrdup(orig_hint->br_name); | |
740 | new_hint->br_type = xstrdup(orig_hint->br_type); | |
741 | new_hint->ofp_port = orig_hint->ofp_port; | |
742 | ||
743 | shash_add(&init_ofp_ports, node->name, new_hint); | |
744 | } | |
b0408fca JP |
745 | } |
746 | ||
abe529af BP |
747 | static void |
748 | enumerate_types(struct sset *types) | |
749 | { | |
750 | dp_enumerate_types(types); | |
751 | } | |
752 | ||
753 | static int | |
754 | enumerate_names(const char *type, struct sset *names) | |
755 | { | |
acf60855 JP |
756 | struct ofproto_dpif *ofproto; |
757 | ||
758 | sset_clear(names); | |
759 | HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) { | |
760 | if (strcmp(type, ofproto->up.type)) { | |
761 | continue; | |
762 | } | |
763 | sset_add(names, ofproto->up.name); | |
764 | } | |
765 | ||
766 | return 0; | |
abe529af BP |
767 | } |
768 | ||
769 | static int | |
770 | del(const char *type, const char *name) | |
771 | { | |
772 | struct dpif *dpif; | |
773 | int error; | |
774 | ||
775 | error = dpif_open(name, type, &dpif); | |
776 | if (!error) { | |
777 | error = dpif_delete(dpif); | |
778 | dpif_close(dpif); | |
779 | } | |
780 | return error; | |
781 | } | |
782 | \f | |
0aeaabc8 JP |
783 | static const char * |
784 | port_open_type(const char *datapath_type, const char *port_type) | |
785 | { | |
786 | return dpif_port_open_type(datapath_type, port_type); | |
787 | } | |
788 | ||
acf60855 JP |
789 | /* Type functions. */ |
790 | ||
791 | static int | |
792 | type_run(const char *type) | |
793 | { | |
794 | struct dpif_backer *backer; | |
795 | char *devname; | |
796 | int error; | |
797 | ||
798 | backer = shash_find_data(&all_dpif_backers, type); | |
799 | if (!backer) { | |
800 | /* This is not necessarily a problem, since backers are only | |
801 | * created on demand. */ | |
802 | return 0; | |
803 | } | |
804 | ||
805 | dpif_run(backer->dpif); | |
806 | ||
807 | if (timer_expired(&backer->next_expiration)) { | |
808 | int delay = expire(backer); | |
809 | timer_set_duration(&backer->next_expiration, delay); | |
810 | } | |
811 | ||
812 | /* Check for port changes in the dpif. */ | |
813 | while ((error = dpif_port_poll(backer->dpif, &devname)) == 0) { | |
814 | struct ofproto_dpif *ofproto = NULL; | |
815 | struct dpif_port port; | |
816 | ||
817 | /* Don't report on the datapath's device. */ | |
818 | if (!strcmp(devname, dpif_base_name(backer->dpif))) { | |
819 | continue; | |
820 | } | |
821 | ||
822 | HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, | |
823 | &all_ofproto_dpifs) { | |
824 | if (sset_contains(&ofproto->ports, devname)) { | |
825 | break; | |
826 | } | |
827 | } | |
828 | ||
829 | if (dpif_port_query_by_name(backer->dpif, devname, &port)) { | |
830 | /* The port was removed. If we know the datapath, | |
831 | * report it through poll_set(). If we don't, it may be | |
832 | * notifying us of a removal we initiated, so ignore it. | |
833 | * If there's a pending ENOBUFS, let it stand, since | |
834 | * everything will be reevaluated. */ | |
835 | if (ofproto && ofproto->port_poll_errno != ENOBUFS) { | |
836 | sset_add(&ofproto->port_poll_set, devname); | |
837 | ofproto->port_poll_errno = 0; | |
838 | } | |
839 | dpif_port_destroy(&port); | |
840 | } else if (!ofproto) { | |
841 | /* The port was added, but we don't know with which | |
842 | * ofproto we should associate it. Delete it. */ | |
843 | dpif_port_del(backer->dpif, port.port_no); | |
844 | } | |
845 | ||
846 | free(devname); | |
847 | } | |
848 | ||
849 | if (error != EAGAIN) { | |
850 | struct ofproto_dpif *ofproto; | |
851 | ||
852 | /* There was some sort of error, so propagate it to all | |
853 | * ofprotos that use this backer. */ | |
854 | HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, | |
855 | &all_ofproto_dpifs) { | |
856 | if (ofproto->backer == backer) { | |
857 | sset_clear(&ofproto->port_poll_set); | |
858 | ofproto->port_poll_errno = error; | |
859 | } | |
860 | } | |
861 | } | |
862 | ||
863 | return 0; | |
864 | } | |
865 | ||
866 | static int | |
867 | type_run_fast(const char *type) | |
868 | { | |
869 | struct dpif_backer *backer; | |
870 | unsigned int work; | |
871 | ||
872 | backer = shash_find_data(&all_dpif_backers, type); | |
873 | if (!backer) { | |
874 | /* This is not necessarily a problem, since backers are only | |
875 | * created on demand. */ | |
876 | return 0; | |
877 | } | |
878 | ||
879 | /* Handle one or more batches of upcalls, until there's nothing left to do | |
880 | * or until we do a fixed total amount of work. | |
881 | * | |
882 | * We do work in batches because it can be much cheaper to set up a number | |
883 | * of flows and fire off their patches all at once. We do multiple batches | |
884 | * because in some cases handling a packet can cause another packet to be | |
885 | * queued almost immediately as part of the return flow. Both | |
886 | * optimizations can make major improvements on some benchmarks and | |
887 | * presumably for real traffic as well. */ | |
888 | work = 0; | |
889 | while (work < FLOW_MISS_MAX_BATCH) { | |
890 | int retval = handle_upcalls(backer, FLOW_MISS_MAX_BATCH - work); | |
891 | if (retval <= 0) { | |
892 | return -retval; | |
893 | } | |
894 | work += retval; | |
895 | } | |
896 | ||
897 | return 0; | |
898 | } | |
899 | ||
900 | static void | |
901 | type_wait(const char *type) | |
902 | { | |
903 | struct dpif_backer *backer; | |
904 | ||
905 | backer = shash_find_data(&all_dpif_backers, type); | |
906 | if (!backer) { | |
907 | /* This is not necessarily a problem, since backers are only | |
908 | * created on demand. */ | |
909 | return; | |
910 | } | |
911 | ||
912 | timer_wait(&backer->next_expiration); | |
913 | } | |
914 | \f | |
abe529af BP |
915 | /* Basic life-cycle. */ |
916 | ||
c57b2226 BP |
917 | static int add_internal_flows(struct ofproto_dpif *); |
918 | ||
abe529af BP |
919 | static struct ofproto * |
920 | alloc(void) | |
921 | { | |
922 | struct ofproto_dpif *ofproto = xmalloc(sizeof *ofproto); | |
923 | return &ofproto->up; | |
924 | } | |
925 | ||
926 | static void | |
927 | dealloc(struct ofproto *ofproto_) | |
928 | { | |
929 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
930 | free(ofproto); | |
931 | } | |
932 | ||
acf60855 JP |
933 | static void |
934 | close_dpif_backer(struct dpif_backer *backer) | |
935 | { | |
936 | struct shash_node *node; | |
937 | ||
938 | assert(backer->refcount > 0); | |
939 | ||
940 | if (--backer->refcount) { | |
941 | return; | |
942 | } | |
943 | ||
944 | hmap_destroy(&backer->odp_to_ofport_map); | |
945 | node = shash_find(&all_dpif_backers, backer->type); | |
946 | free(backer->type); | |
947 | shash_delete(&all_dpif_backers, node); | |
948 | dpif_close(backer->dpif); | |
949 | ||
950 | free(backer); | |
951 | } | |
952 | ||
953 | /* Datapath port slated for removal from datapath. */ | |
954 | struct odp_garbage { | |
955 | struct list list_node; | |
956 | uint32_t odp_port; | |
957 | }; | |
958 | ||
959 | static int | |
960 | open_dpif_backer(const char *type, struct dpif_backer **backerp) | |
961 | { | |
962 | struct dpif_backer *backer; | |
963 | struct dpif_port_dump port_dump; | |
964 | struct dpif_port port; | |
965 | struct shash_node *node; | |
966 | struct list garbage_list; | |
967 | struct odp_garbage *garbage, *next; | |
968 | struct sset names; | |
969 | char *backer_name; | |
970 | const char *name; | |
971 | int error; | |
972 | ||
973 | backer = shash_find_data(&all_dpif_backers, type); | |
974 | if (backer) { | |
975 | backer->refcount++; | |
976 | *backerp = backer; | |
977 | return 0; | |
978 | } | |
979 | ||
980 | backer_name = xasprintf("ovs-%s", type); | |
981 | ||
982 | /* Remove any existing datapaths, since we assume we're the only | |
983 | * userspace controlling the datapath. */ | |
984 | sset_init(&names); | |
985 | dp_enumerate_names(type, &names); | |
986 | SSET_FOR_EACH(name, &names) { | |
987 | struct dpif *old_dpif; | |
988 | ||
989 | /* Don't remove our backer if it exists. */ | |
990 | if (!strcmp(name, backer_name)) { | |
991 | continue; | |
992 | } | |
993 | ||
994 | if (dpif_open(name, type, &old_dpif)) { | |
995 | VLOG_WARN("couldn't open old datapath %s to remove it", name); | |
996 | } else { | |
997 | dpif_delete(old_dpif); | |
998 | dpif_close(old_dpif); | |
999 | } | |
1000 | } | |
1001 | sset_destroy(&names); | |
1002 | ||
1003 | backer = xmalloc(sizeof *backer); | |
1004 | ||
1005 | error = dpif_create_and_open(backer_name, type, &backer->dpif); | |
1006 | free(backer_name); | |
1007 | if (error) { | |
1008 | VLOG_ERR("failed to open datapath of type %s: %s", type, | |
1009 | strerror(error)); | |
1010 | return error; | |
1011 | } | |
1012 | ||
1013 | backer->type = xstrdup(type); | |
1014 | backer->refcount = 1; | |
1015 | hmap_init(&backer->odp_to_ofport_map); | |
1016 | timer_set_duration(&backer->next_expiration, 1000); | |
1017 | *backerp = backer; | |
1018 | ||
1019 | dpif_flow_flush(backer->dpif); | |
1020 | ||
1021 | /* Loop through the ports already on the datapath and remove any | |
1022 | * that we don't need anymore. */ | |
1023 | list_init(&garbage_list); | |
1024 | dpif_port_dump_start(&port_dump, backer->dpif); | |
1025 | while (dpif_port_dump_next(&port_dump, &port)) { | |
1026 | node = shash_find(&init_ofp_ports, port.name); | |
1027 | if (!node && strcmp(port.name, dpif_base_name(backer->dpif))) { | |
1028 | garbage = xmalloc(sizeof *garbage); | |
1029 | garbage->odp_port = port.port_no; | |
1030 | list_push_front(&garbage_list, &garbage->list_node); | |
1031 | } | |
1032 | } | |
1033 | dpif_port_dump_done(&port_dump); | |
1034 | ||
1035 | LIST_FOR_EACH_SAFE (garbage, next, list_node, &garbage_list) { | |
1036 | dpif_port_del(backer->dpif, garbage->odp_port); | |
1037 | list_remove(&garbage->list_node); | |
1038 | free(garbage); | |
1039 | } | |
1040 | ||
1041 | shash_add(&all_dpif_backers, type, backer); | |
1042 | ||
1043 | error = dpif_recv_set(backer->dpif, true); | |
1044 | if (error) { | |
1045 | VLOG_ERR("failed to listen on datapath of type %s: %s", | |
1046 | type, strerror(error)); | |
1047 | close_dpif_backer(backer); | |
1048 | return error; | |
1049 | } | |
1050 | ||
1051 | return error; | |
1052 | } | |
1053 | ||
abe529af | 1054 | static int |
0f5f95a9 | 1055 | construct(struct ofproto *ofproto_) |
abe529af BP |
1056 | { |
1057 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
acf60855 | 1058 | struct shash_node *node, *next; |
91858960 | 1059 | int max_ports; |
abe529af BP |
1060 | int error; |
1061 | int i; | |
1062 | ||
acf60855 | 1063 | error = open_dpif_backer(ofproto->up.type, &ofproto->backer); |
abe529af | 1064 | if (error) { |
abe529af BP |
1065 | return error; |
1066 | } | |
1067 | ||
acf60855 | 1068 | max_ports = dpif_get_max_ports(ofproto->backer->dpif); |
91858960 BP |
1069 | ofproto_init_max_ports(ofproto_, MIN(max_ports, OFPP_MAX)); |
1070 | ||
6c1491fb | 1071 | ofproto->n_matches = 0; |
abe529af | 1072 | |
abe529af BP |
1073 | ofproto->netflow = NULL; |
1074 | ofproto->sflow = NULL; | |
21f7563c | 1075 | ofproto->stp = NULL; |
abe529af | 1076 | hmap_init(&ofproto->bundles); |
e764773c | 1077 | ofproto->ml = mac_learning_create(MAC_ENTRY_DEFAULT_IDLE_TIME); |
abe529af BP |
1078 | for (i = 0; i < MAX_MIRRORS; i++) { |
1079 | ofproto->mirrors[i] = NULL; | |
1080 | } | |
1081 | ofproto->has_bonded_bundles = false; | |
1082 | ||
abe529af | 1083 | hmap_init(&ofproto->facets); |
b0f7b9b5 | 1084 | hmap_init(&ofproto->subfacets); |
9d6ac44e | 1085 | ofproto->governor = NULL; |
54a9cbc9 BP |
1086 | |
1087 | for (i = 0; i < N_TABLES; i++) { | |
1088 | struct table_dpif *table = &ofproto->tables[i]; | |
1089 | ||
1090 | table->catchall_table = NULL; | |
1091 | table->other_table = NULL; | |
1092 | table->basis = random_uint32(); | |
1093 | } | |
3c4a309c | 1094 | ofproto->need_revalidate = 0; |
abe529af BP |
1095 | tag_set_init(&ofproto->revalidate_set); |
1096 | ||
7ee20df1 BP |
1097 | list_init(&ofproto->completions); |
1098 | ||
abe529af BP |
1099 | ofproto_dpif_unixctl_init(); |
1100 | ||
ccb7c863 | 1101 | ofproto->has_mirrors = false; |
daff3353 EJ |
1102 | ofproto->has_bundle_action = false; |
1103 | ||
52a90c29 BP |
1104 | hmap_init(&ofproto->vlandev_map); |
1105 | hmap_init(&ofproto->realdev_vid_map); | |
1106 | ||
acf60855 JP |
1107 | sset_init(&ofproto->ports); |
1108 | sset_init(&ofproto->port_poll_set); | |
1109 | ofproto->port_poll_errno = 0; | |
1110 | ||
1111 | SHASH_FOR_EACH_SAFE (node, next, &init_ofp_ports) { | |
1112 | const struct iface_hint *iface_hint = node->data; | |
1113 | ||
1114 | if (!strcmp(iface_hint->br_name, ofproto->up.name)) { | |
1115 | /* Check if the datapath already has this port. */ | |
1116 | if (dpif_port_exists(ofproto->backer->dpif, node->name)) { | |
1117 | sset_add(&ofproto->ports, node->name); | |
1118 | } | |
1119 | ||
1120 | free(iface_hint->br_name); | |
1121 | free(iface_hint->br_type); | |
1122 | shash_delete(&init_ofp_ports, node); | |
1123 | } | |
1124 | } | |
e1b1d06a | 1125 | |
b44a10b7 BP |
1126 | hmap_insert(&all_ofproto_dpifs, &ofproto->all_ofproto_dpifs_node, |
1127 | hash_string(ofproto->up.name, 0)); | |
6527c598 | 1128 | memset(&ofproto->stats, 0, sizeof ofproto->stats); |
0f5f95a9 BP |
1129 | |
1130 | ofproto_init_tables(ofproto_, N_TABLES); | |
c57b2226 BP |
1131 | error = add_internal_flows(ofproto); |
1132 | ofproto->up.tables[TBL_INTERNAL].flags = OFTABLE_HIDDEN | OFTABLE_READONLY; | |
1133 | ||
1134 | return error; | |
1135 | } | |
1136 | ||
1137 | static int | |
1138 | add_internal_flow(struct ofproto_dpif *ofproto, int id, | |
f25d0cf3 | 1139 | const struct ofpbuf *ofpacts, struct rule_dpif **rulep) |
c57b2226 BP |
1140 | { |
1141 | struct ofputil_flow_mod fm; | |
1142 | int error; | |
1143 | ||
81a76618 BP |
1144 | match_init_catchall(&fm.match); |
1145 | fm.priority = 0; | |
1146 | match_set_reg(&fm.match, 0, id); | |
623e1caf | 1147 | fm.new_cookie = htonll(0); |
c57b2226 BP |
1148 | fm.cookie = htonll(0); |
1149 | fm.cookie_mask = htonll(0); | |
1150 | fm.table_id = TBL_INTERNAL; | |
1151 | fm.command = OFPFC_ADD; | |
1152 | fm.idle_timeout = 0; | |
1153 | fm.hard_timeout = 0; | |
1154 | fm.buffer_id = 0; | |
1155 | fm.out_port = 0; | |
1156 | fm.flags = 0; | |
f25d0cf3 BP |
1157 | fm.ofpacts = ofpacts->data; |
1158 | fm.ofpacts_len = ofpacts->size; | |
c57b2226 BP |
1159 | |
1160 | error = ofproto_flow_mod(&ofproto->up, &fm); | |
1161 | if (error) { | |
1162 | VLOG_ERR_RL(&rl, "failed to add internal flow %d (%s)", | |
1163 | id, ofperr_to_string(error)); | |
1164 | return error; | |
1165 | } | |
1166 | ||
81a76618 | 1167 | *rulep = rule_dpif_lookup__(ofproto, &fm.match.flow, TBL_INTERNAL); |
c57b2226 | 1168 | assert(*rulep != NULL); |
0f5f95a9 | 1169 | |
abe529af BP |
1170 | return 0; |
1171 | } | |
1172 | ||
c57b2226 BP |
1173 | static int |
1174 | add_internal_flows(struct ofproto_dpif *ofproto) | |
1175 | { | |
f25d0cf3 BP |
1176 | struct ofpact_controller *controller; |
1177 | uint64_t ofpacts_stub[128 / 8]; | |
1178 | struct ofpbuf ofpacts; | |
c57b2226 BP |
1179 | int error; |
1180 | int id; | |
1181 | ||
f25d0cf3 | 1182 | ofpbuf_use_stack(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); |
c57b2226 BP |
1183 | id = 1; |
1184 | ||
f25d0cf3 BP |
1185 | controller = ofpact_put_CONTROLLER(&ofpacts); |
1186 | controller->max_len = UINT16_MAX; | |
1187 | controller->controller_id = 0; | |
1188 | controller->reason = OFPR_NO_MATCH; | |
1189 | ofpact_pad(&ofpacts); | |
1190 | ||
1191 | error = add_internal_flow(ofproto, id++, &ofpacts, &ofproto->miss_rule); | |
c57b2226 BP |
1192 | if (error) { |
1193 | return error; | |
1194 | } | |
1195 | ||
f25d0cf3 BP |
1196 | ofpbuf_clear(&ofpacts); |
1197 | error = add_internal_flow(ofproto, id++, &ofpacts, | |
c57b2226 BP |
1198 | &ofproto->no_packet_in_rule); |
1199 | return error; | |
1200 | } | |
1201 | ||
7ee20df1 BP |
1202 | static void |
1203 | complete_operations(struct ofproto_dpif *ofproto) | |
1204 | { | |
1205 | struct dpif_completion *c, *next; | |
1206 | ||
1207 | LIST_FOR_EACH_SAFE (c, next, list_node, &ofproto->completions) { | |
1208 | ofoperation_complete(c->op, 0); | |
1209 | list_remove(&c->list_node); | |
1210 | free(c); | |
1211 | } | |
1212 | } | |
1213 | ||
abe529af BP |
1214 | static void |
1215 | destruct(struct ofproto *ofproto_) | |
1216 | { | |
1217 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
7ee20df1 | 1218 | struct rule_dpif *rule, *next_rule; |
d0918789 | 1219 | struct oftable *table; |
abe529af BP |
1220 | int i; |
1221 | ||
b44a10b7 | 1222 | hmap_remove(&all_ofproto_dpifs, &ofproto->all_ofproto_dpifs_node); |
7ee20df1 BP |
1223 | complete_operations(ofproto); |
1224 | ||
0697b5c3 BP |
1225 | OFPROTO_FOR_EACH_TABLE (table, &ofproto->up) { |
1226 | struct cls_cursor cursor; | |
1227 | ||
d0918789 | 1228 | cls_cursor_init(&cursor, &table->cls, NULL); |
0697b5c3 BP |
1229 | CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, up.cr, &cursor) { |
1230 | ofproto_rule_destroy(&rule->up); | |
1231 | } | |
7ee20df1 BP |
1232 | } |
1233 | ||
abe529af BP |
1234 | for (i = 0; i < MAX_MIRRORS; i++) { |
1235 | mirror_destroy(ofproto->mirrors[i]); | |
1236 | } | |
1237 | ||
1238 | netflow_destroy(ofproto->netflow); | |
bae473fe | 1239 | dpif_sflow_destroy(ofproto->sflow); |
abe529af BP |
1240 | hmap_destroy(&ofproto->bundles); |
1241 | mac_learning_destroy(ofproto->ml); | |
1242 | ||
1243 | hmap_destroy(&ofproto->facets); | |
b0f7b9b5 | 1244 | hmap_destroy(&ofproto->subfacets); |
9d6ac44e | 1245 | governor_destroy(ofproto->governor); |
abe529af | 1246 | |
52a90c29 BP |
1247 | hmap_destroy(&ofproto->vlandev_map); |
1248 | hmap_destroy(&ofproto->realdev_vid_map); | |
1249 | ||
acf60855 JP |
1250 | sset_destroy(&ofproto->ports); |
1251 | sset_destroy(&ofproto->port_poll_set); | |
e1b1d06a | 1252 | |
acf60855 | 1253 | close_dpif_backer(ofproto->backer); |
abe529af BP |
1254 | } |
1255 | ||
1256 | static int | |
5fcc0d00 | 1257 | run_fast(struct ofproto *ofproto_) |
abe529af BP |
1258 | { |
1259 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
0aa66d6e | 1260 | struct ofport_dpif *ofport; |
abe529af | 1261 | |
0aa66d6e EJ |
1262 | HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) { |
1263 | port_run_fast(ofport); | |
1264 | } | |
1265 | ||
5fcc0d00 BP |
1266 | return 0; |
1267 | } | |
1268 | ||
1269 | static int | |
1270 | run(struct ofproto *ofproto_) | |
1271 | { | |
1272 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
1273 | struct ofport_dpif *ofport; | |
1274 | struct ofbundle *bundle; | |
1275 | int error; | |
1276 | ||
1277 | if (!clogged) { | |
1278 | complete_operations(ofproto); | |
1279 | } | |
5fcc0d00 BP |
1280 | |
1281 | error = run_fast(ofproto_); | |
1282 | if (error) { | |
1283 | return error; | |
abe529af BP |
1284 | } |
1285 | ||
abe529af | 1286 | if (ofproto->netflow) { |
6fca1ffb BP |
1287 | if (netflow_run(ofproto->netflow)) { |
1288 | send_netflow_active_timeouts(ofproto); | |
1289 | } | |
abe529af BP |
1290 | } |
1291 | if (ofproto->sflow) { | |
bae473fe | 1292 | dpif_sflow_run(ofproto->sflow); |
abe529af BP |
1293 | } |
1294 | ||
1295 | HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) { | |
1296 | port_run(ofport); | |
1297 | } | |
1298 | HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) { | |
1299 | bundle_run(bundle); | |
1300 | } | |
1301 | ||
21f7563c | 1302 | stp_run(ofproto); |
1c313b88 BP |
1303 | mac_learning_run(ofproto->ml, &ofproto->revalidate_set); |
1304 | ||
abe529af BP |
1305 | /* Now revalidate if there's anything to do. */ |
1306 | if (ofproto->need_revalidate | |
1307 | || !tag_set_is_empty(&ofproto->revalidate_set)) { | |
1308 | struct tag_set revalidate_set = ofproto->revalidate_set; | |
1309 | bool revalidate_all = ofproto->need_revalidate; | |
c57b2226 | 1310 | struct facet *facet; |
abe529af | 1311 | |
3c4a309c BP |
1312 | switch (ofproto->need_revalidate) { |
1313 | case REV_RECONFIGURE: COVERAGE_INC(rev_reconfigure); break; | |
1314 | case REV_STP: COVERAGE_INC(rev_stp); break; | |
1315 | case REV_PORT_TOGGLED: COVERAGE_INC(rev_port_toggled); break; | |
1316 | case REV_FLOW_TABLE: COVERAGE_INC(rev_flow_table); break; | |
1317 | case REV_INCONSISTENCY: COVERAGE_INC(rev_inconsistency); break; | |
1318 | } | |
1319 | ||
abe529af BP |
1320 | /* Clear the revalidation flags. */ |
1321 | tag_set_init(&ofproto->revalidate_set); | |
3c4a309c | 1322 | ofproto->need_revalidate = 0; |
abe529af | 1323 | |
c57b2226 | 1324 | HMAP_FOR_EACH (facet, hmap_node, &ofproto->facets) { |
abe529af BP |
1325 | if (revalidate_all |
1326 | || tag_set_intersects(&revalidate_set, facet->tags)) { | |
15baa734 | 1327 | facet_revalidate(facet); |
abe529af BP |
1328 | } |
1329 | } | |
1330 | } | |
1331 | ||
6814e51f BP |
1332 | /* Check the consistency of a random facet, to aid debugging. */ |
1333 | if (!hmap_is_empty(&ofproto->facets) && !ofproto->need_revalidate) { | |
1334 | struct facet *facet; | |
1335 | ||
1336 | facet = CONTAINER_OF(hmap_random_node(&ofproto->facets), | |
1337 | struct facet, hmap_node); | |
1338 | if (!tag_set_intersects(&ofproto->revalidate_set, facet->tags)) { | |
1339 | if (!facet_check_consistency(facet)) { | |
3c4a309c | 1340 | ofproto->need_revalidate = REV_INCONSISTENCY; |
6814e51f BP |
1341 | } |
1342 | } | |
1343 | } | |
1344 | ||
9d6ac44e BP |
1345 | if (ofproto->governor) { |
1346 | size_t n_subfacets; | |
1347 | ||
1348 | governor_run(ofproto->governor); | |
1349 | ||
1350 | /* If the governor has shrunk to its minimum size and the number of | |
1351 | * subfacets has dwindled, then drop the governor entirely. | |
1352 | * | |
1353 | * For hysteresis, the number of subfacets to drop the governor is | |
1354 | * smaller than the number needed to trigger its creation. */ | |
1355 | n_subfacets = hmap_count(&ofproto->subfacets); | |
1356 | if (n_subfacets * 4 < ofproto->up.flow_eviction_threshold | |
1357 | && governor_is_idle(ofproto->governor)) { | |
1358 | governor_destroy(ofproto->governor); | |
1359 | ofproto->governor = NULL; | |
1360 | } | |
1361 | } | |
1362 | ||
abe529af BP |
1363 | return 0; |
1364 | } | |
1365 | ||
1366 | static void | |
1367 | wait(struct ofproto *ofproto_) | |
1368 | { | |
1369 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
1370 | struct ofport_dpif *ofport; | |
1371 | struct ofbundle *bundle; | |
1372 | ||
7ee20df1 BP |
1373 | if (!clogged && !list_is_empty(&ofproto->completions)) { |
1374 | poll_immediate_wake(); | |
1375 | } | |
1376 | ||
acf60855 JP |
1377 | dpif_wait(ofproto->backer->dpif); |
1378 | dpif_recv_wait(ofproto->backer->dpif); | |
abe529af | 1379 | if (ofproto->sflow) { |
bae473fe | 1380 | dpif_sflow_wait(ofproto->sflow); |
abe529af BP |
1381 | } |
1382 | if (!tag_set_is_empty(&ofproto->revalidate_set)) { | |
1383 | poll_immediate_wake(); | |
1384 | } | |
1385 | HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) { | |
1386 | port_wait(ofport); | |
1387 | } | |
1388 | HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) { | |
1389 | bundle_wait(bundle); | |
1390 | } | |
6fca1ffb BP |
1391 | if (ofproto->netflow) { |
1392 | netflow_wait(ofproto->netflow); | |
1393 | } | |
1c313b88 | 1394 | mac_learning_wait(ofproto->ml); |
21f7563c | 1395 | stp_wait(ofproto); |
abe529af BP |
1396 | if (ofproto->need_revalidate) { |
1397 | /* Shouldn't happen, but if it does just go around again. */ | |
1398 | VLOG_DBG_RL(&rl, "need revalidate in ofproto_wait_cb()"); | |
1399 | poll_immediate_wake(); | |
abe529af | 1400 | } |
9d6ac44e BP |
1401 | if (ofproto->governor) { |
1402 | governor_wait(ofproto->governor); | |
1403 | } | |
abe529af BP |
1404 | } |
1405 | ||
0d085684 BP |
1406 | static void |
1407 | get_memory_usage(const struct ofproto *ofproto_, struct simap *usage) | |
1408 | { | |
1409 | const struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
1410 | ||
1411 | simap_increase(usage, "facets", hmap_count(&ofproto->facets)); | |
1412 | simap_increase(usage, "subfacets", hmap_count(&ofproto->subfacets)); | |
1413 | } | |
1414 | ||
abe529af BP |
1415 | static void |
1416 | flush(struct ofproto *ofproto_) | |
1417 | { | |
1418 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
acf60855 JP |
1419 | struct subfacet *subfacet, *next_subfacet; |
1420 | struct subfacet *batch[SUBFACET_DESTROY_MAX_BATCH]; | |
1421 | int n_batch; | |
b0f7b9b5 | 1422 | |
acf60855 JP |
1423 | n_batch = 0; |
1424 | HMAP_FOR_EACH_SAFE (subfacet, next_subfacet, hmap_node, | |
1425 | &ofproto->subfacets) { | |
1426 | if (subfacet->path != SF_NOT_INSTALLED) { | |
1427 | batch[n_batch++] = subfacet; | |
1428 | if (n_batch >= SUBFACET_DESTROY_MAX_BATCH) { | |
1429 | subfacet_destroy_batch(ofproto, batch, n_batch); | |
1430 | n_batch = 0; | |
1431 | } | |
1432 | } else { | |
1433 | subfacet_destroy(subfacet); | |
b0f7b9b5 | 1434 | } |
abe529af | 1435 | } |
acf60855 JP |
1436 | |
1437 | if (n_batch > 0) { | |
1438 | subfacet_destroy_batch(ofproto, batch, n_batch); | |
1439 | } | |
abe529af BP |
1440 | } |
1441 | ||
6c1491fb BP |
1442 | static void |
1443 | get_features(struct ofproto *ofproto_ OVS_UNUSED, | |
9e1fd49b | 1444 | bool *arp_match_ip, enum ofputil_action_bitmap *actions) |
6c1491fb BP |
1445 | { |
1446 | *arp_match_ip = true; | |
9e1fd49b BP |
1447 | *actions = (OFPUTIL_A_OUTPUT | |
1448 | OFPUTIL_A_SET_VLAN_VID | | |
1449 | OFPUTIL_A_SET_VLAN_PCP | | |
1450 | OFPUTIL_A_STRIP_VLAN | | |
1451 | OFPUTIL_A_SET_DL_SRC | | |
1452 | OFPUTIL_A_SET_DL_DST | | |
1453 | OFPUTIL_A_SET_NW_SRC | | |
1454 | OFPUTIL_A_SET_NW_DST | | |
1455 | OFPUTIL_A_SET_NW_TOS | | |
1456 | OFPUTIL_A_SET_TP_SRC | | |
1457 | OFPUTIL_A_SET_TP_DST | | |
1458 | OFPUTIL_A_ENQUEUE); | |
6c1491fb BP |
1459 | } |
1460 | ||
1461 | static void | |
307975da | 1462 | get_tables(struct ofproto *ofproto_, struct ofp12_table_stats *ots) |
6c1491fb BP |
1463 | { |
1464 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
a8d9304d | 1465 | struct dpif_dp_stats s; |
6c1491fb BP |
1466 | |
1467 | strcpy(ots->name, "classifier"); | |
1468 | ||
acf60855 JP |
1469 | dpif_get_dp_stats(ofproto->backer->dpif, &s); |
1470 | ||
307975da SH |
1471 | ots->lookup_count = htonll(s.n_hit + s.n_missed); |
1472 | ots->matched_count = htonll(s.n_hit + ofproto->n_matches); | |
6c1491fb BP |
1473 | } |
1474 | ||
abe529af BP |
1475 | static struct ofport * |
1476 | port_alloc(void) | |
1477 | { | |
1478 | struct ofport_dpif *port = xmalloc(sizeof *port); | |
1479 | return &port->up; | |
1480 | } | |
1481 | ||
1482 | static void | |
1483 | port_dealloc(struct ofport *port_) | |
1484 | { | |
1485 | struct ofport_dpif *port = ofport_dpif_cast(port_); | |
1486 | free(port); | |
1487 | } | |
1488 | ||
1489 | static int | |
1490 | port_construct(struct ofport *port_) | |
1491 | { | |
1492 | struct ofport_dpif *port = ofport_dpif_cast(port_); | |
1493 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto); | |
e1b1d06a JP |
1494 | struct dpif_port dpif_port; |
1495 | int error; | |
abe529af | 1496 | |
3c4a309c | 1497 | ofproto->need_revalidate = REV_RECONFIGURE; |
abe529af BP |
1498 | port->bundle = NULL; |
1499 | port->cfm = NULL; | |
1500 | port->tag = tag_create_random(); | |
d5ffa7f2 | 1501 | port->may_enable = true; |
21f7563c JP |
1502 | port->stp_port = NULL; |
1503 | port->stp_state = STP_DISABLED; | |
8b36f51e | 1504 | hmap_init(&port->priorities); |
52a90c29 BP |
1505 | port->realdev_ofp_port = 0; |
1506 | port->vlandev_vid = 0; | |
3e5b3fdb | 1507 | port->carrier_seq = netdev_get_carrier_resets(port->up.netdev); |
abe529af | 1508 | |
acf60855 | 1509 | error = dpif_port_query_by_name(ofproto->backer->dpif, |
e1b1d06a JP |
1510 | netdev_get_name(port->up.netdev), |
1511 | &dpif_port); | |
1512 | if (error) { | |
1513 | return error; | |
1514 | } | |
1515 | ||
1516 | port->odp_port = dpif_port.port_no; | |
1517 | ||
1518 | /* Sanity-check that a mapping doesn't already exist. This | |
1519 | * shouldn't happen. */ | |
1520 | if (odp_port_to_ofp_port(ofproto, port->odp_port) != OFPP_NONE) { | |
1521 | VLOG_ERR("port %s already has an OpenFlow port number\n", | |
1522 | dpif_port.name); | |
1523 | return EBUSY; | |
1524 | } | |
1525 | ||
acf60855 | 1526 | hmap_insert(&ofproto->backer->odp_to_ofport_map, &port->odp_port_node, |
e1b1d06a JP |
1527 | hash_int(port->odp_port, 0)); |
1528 | ||
abe529af | 1529 | if (ofproto->sflow) { |
e1b1d06a | 1530 | dpif_sflow_add_port(ofproto->sflow, port_, port->odp_port); |
abe529af BP |
1531 | } |
1532 | ||
1533 | return 0; | |
1534 | } | |
1535 | ||
1536 | static void | |
1537 | port_destruct(struct ofport *port_) | |
1538 | { | |
1539 | struct ofport_dpif *port = ofport_dpif_cast(port_); | |
1540 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto); | |
acf60855 | 1541 | struct dpif_port dpif_port; |
abe529af | 1542 | |
acf60855 JP |
1543 | if (!dpif_port_query_by_number(ofproto->backer->dpif, |
1544 | port->odp_port, &dpif_port)) { | |
1545 | /* The underlying device is still there, so delete it. This | |
1546 | * happens when the ofproto is being destroyed, since the caller | |
1547 | * assumes that removal of attached ports will happen as part of | |
1548 | * destruction. */ | |
1549 | dpif_port_del(ofproto->backer->dpif, port->odp_port); | |
1550 | dpif_port_destroy(&dpif_port); | |
1551 | } | |
1552 | ||
1553 | sset_find_and_delete(&ofproto->ports, netdev_get_name(port->up.netdev)); | |
1554 | hmap_remove(&ofproto->backer->odp_to_ofport_map, &port->odp_port_node); | |
3c4a309c | 1555 | ofproto->need_revalidate = REV_RECONFIGURE; |
abe529af | 1556 | bundle_remove(port_); |
a5610457 | 1557 | set_cfm(port_, NULL); |
abe529af | 1558 | if (ofproto->sflow) { |
bae473fe | 1559 | dpif_sflow_del_port(ofproto->sflow, port->odp_port); |
abe529af | 1560 | } |
8b36f51e EJ |
1561 | |
1562 | ofport_clear_priorities(port); | |
1563 | hmap_destroy(&port->priorities); | |
abe529af BP |
1564 | } |
1565 | ||
1566 | static void | |
1567 | port_modified(struct ofport *port_) | |
1568 | { | |
1569 | struct ofport_dpif *port = ofport_dpif_cast(port_); | |
1570 | ||
1571 | if (port->bundle && port->bundle->bond) { | |
1572 | bond_slave_set_netdev(port->bundle->bond, port, port->up.netdev); | |
1573 | } | |
1574 | } | |
1575 | ||
1576 | static void | |
9e1fd49b | 1577 | port_reconfigured(struct ofport *port_, enum ofputil_port_config old_config) |
abe529af BP |
1578 | { |
1579 | struct ofport_dpif *port = ofport_dpif_cast(port_); | |
1580 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto); | |
9e1fd49b | 1581 | enum ofputil_port_config changed = old_config ^ port->up.pp.config; |
abe529af | 1582 | |
9e1fd49b | 1583 | if (changed & (OFPUTIL_PC_NO_RECV | OFPUTIL_PC_NO_RECV_STP | |
c57b2226 BP |
1584 | OFPUTIL_PC_NO_FWD | OFPUTIL_PC_NO_FLOOD | |
1585 | OFPUTIL_PC_NO_PACKET_IN)) { | |
3c4a309c | 1586 | ofproto->need_revalidate = REV_RECONFIGURE; |
7bde8dd8 | 1587 | |
9e1fd49b | 1588 | if (changed & OFPUTIL_PC_NO_FLOOD && port->bundle) { |
7bde8dd8 JP |
1589 | bundle_update(port->bundle); |
1590 | } | |
abe529af BP |
1591 | } |
1592 | } | |
1593 | ||
1594 | static int | |
1595 | set_sflow(struct ofproto *ofproto_, | |
1596 | const struct ofproto_sflow_options *sflow_options) | |
1597 | { | |
1598 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
bae473fe | 1599 | struct dpif_sflow *ds = ofproto->sflow; |
6ff686f2 | 1600 | |
abe529af | 1601 | if (sflow_options) { |
bae473fe | 1602 | if (!ds) { |
abe529af BP |
1603 | struct ofport_dpif *ofport; |
1604 | ||
4213f19d | 1605 | ds = ofproto->sflow = dpif_sflow_create(); |
abe529af | 1606 | HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) { |
e1b1d06a | 1607 | dpif_sflow_add_port(ds, &ofport->up, ofport->odp_port); |
abe529af | 1608 | } |
3c4a309c | 1609 | ofproto->need_revalidate = REV_RECONFIGURE; |
abe529af | 1610 | } |
bae473fe | 1611 | dpif_sflow_set_options(ds, sflow_options); |
abe529af | 1612 | } else { |
6ff686f2 PS |
1613 | if (ds) { |
1614 | dpif_sflow_destroy(ds); | |
3c4a309c | 1615 | ofproto->need_revalidate = REV_RECONFIGURE; |
6ff686f2 PS |
1616 | ofproto->sflow = NULL; |
1617 | } | |
abe529af BP |
1618 | } |
1619 | return 0; | |
1620 | } | |
1621 | ||
1622 | static int | |
a5610457 | 1623 | set_cfm(struct ofport *ofport_, const struct cfm_settings *s) |
abe529af BP |
1624 | { |
1625 | struct ofport_dpif *ofport = ofport_dpif_cast(ofport_); | |
1626 | int error; | |
1627 | ||
a5610457 | 1628 | if (!s) { |
abe529af BP |
1629 | error = 0; |
1630 | } else { | |
1631 | if (!ofport->cfm) { | |
8c977421 EJ |
1632 | struct ofproto_dpif *ofproto; |
1633 | ||
1634 | ofproto = ofproto_dpif_cast(ofport->up.ofproto); | |
3c4a309c | 1635 | ofproto->need_revalidate = REV_RECONFIGURE; |
6f629657 | 1636 | ofport->cfm = cfm_create(netdev_get_name(ofport->up.netdev)); |
abe529af BP |
1637 | } |
1638 | ||
a5610457 | 1639 | if (cfm_configure(ofport->cfm, s)) { |
abe529af BP |
1640 | return 0; |
1641 | } | |
1642 | ||
1643 | error = EINVAL; | |
1644 | } | |
1645 | cfm_destroy(ofport->cfm); | |
1646 | ofport->cfm = NULL; | |
1647 | return error; | |
1648 | } | |
1649 | ||
1650 | static int | |
a5610457 | 1651 | get_cfm_fault(const struct ofport *ofport_) |
abe529af BP |
1652 | { |
1653 | struct ofport_dpif *ofport = ofport_dpif_cast(ofport_); | |
a5610457 EJ |
1654 | |
1655 | return ofport->cfm ? cfm_get_fault(ofport->cfm) : -1; | |
abe529af | 1656 | } |
1de11730 | 1657 | |
1c0333b6 EJ |
1658 | static int |
1659 | get_cfm_opup(const struct ofport *ofport_) | |
1660 | { | |
1661 | struct ofport_dpif *ofport = ofport_dpif_cast(ofport_); | |
1662 | ||
1663 | return ofport->cfm ? cfm_get_opup(ofport->cfm) : -1; | |
1664 | } | |
1665 | ||
1de11730 EJ |
1666 | static int |
1667 | get_cfm_remote_mpids(const struct ofport *ofport_, const uint64_t **rmps, | |
1668 | size_t *n_rmps) | |
1669 | { | |
1670 | struct ofport_dpif *ofport = ofport_dpif_cast(ofport_); | |
1671 | ||
1672 | if (ofport->cfm) { | |
1673 | cfm_get_remote_mpids(ofport->cfm, rmps, n_rmps); | |
1674 | return 0; | |
1675 | } else { | |
1676 | return -1; | |
1677 | } | |
1678 | } | |
3967a833 MM |
1679 | |
1680 | static int | |
1681 | get_cfm_health(const struct ofport *ofport_) | |
1682 | { | |
1683 | struct ofport_dpif *ofport = ofport_dpif_cast(ofport_); | |
1684 | ||
1685 | return ofport->cfm ? cfm_get_health(ofport->cfm) : -1; | |
1686 | } | |
abe529af | 1687 | \f |
21f7563c JP |
1688 | /* Spanning Tree. */ |
1689 | ||
1690 | static void | |
1691 | send_bpdu_cb(struct ofpbuf *pkt, int port_num, void *ofproto_) | |
1692 | { | |
1693 | struct ofproto_dpif *ofproto = ofproto_; | |
1694 | struct stp_port *sp = stp_get_port(ofproto->stp, port_num); | |
1695 | struct ofport_dpif *ofport; | |
1696 | ||
1697 | ofport = stp_port_get_aux(sp); | |
1698 | if (!ofport) { | |
1699 | VLOG_WARN_RL(&rl, "%s: cannot send BPDU on unknown port %d", | |
1700 | ofproto->up.name, port_num); | |
1701 | } else { | |
1702 | struct eth_header *eth = pkt->l2; | |
1703 | ||
1704 | netdev_get_etheraddr(ofport->up.netdev, eth->eth_src); | |
1705 | if (eth_addr_is_zero(eth->eth_src)) { | |
1706 | VLOG_WARN_RL(&rl, "%s: cannot send BPDU on port %d " | |
1707 | "with unknown MAC", ofproto->up.name, port_num); | |
1708 | } else { | |
97d6520b | 1709 | send_packet(ofport, pkt); |
21f7563c JP |
1710 | } |
1711 | } | |
1712 | ofpbuf_delete(pkt); | |
1713 | } | |
1714 | ||
1715 | /* Configures STP on 'ofproto_' using the settings defined in 's'. */ | |
1716 | static int | |
1717 | set_stp(struct ofproto *ofproto_, const struct ofproto_stp_settings *s) | |
1718 | { | |
1719 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
1720 | ||
1721 | /* Only revalidate flows if the configuration changed. */ | |
1722 | if (!s != !ofproto->stp) { | |
3c4a309c | 1723 | ofproto->need_revalidate = REV_RECONFIGURE; |
21f7563c JP |
1724 | } |
1725 | ||
1726 | if (s) { | |
1727 | if (!ofproto->stp) { | |
1728 | ofproto->stp = stp_create(ofproto_->name, s->system_id, | |
1729 | send_bpdu_cb, ofproto); | |
1730 | ofproto->stp_last_tick = time_msec(); | |
1731 | } | |
1732 | ||
1733 | stp_set_bridge_id(ofproto->stp, s->system_id); | |
1734 | stp_set_bridge_priority(ofproto->stp, s->priority); | |
1735 | stp_set_hello_time(ofproto->stp, s->hello_time); | |
1736 | stp_set_max_age(ofproto->stp, s->max_age); | |
1737 | stp_set_forward_delay(ofproto->stp, s->fwd_delay); | |
1738 | } else { | |
851bf71d EJ |
1739 | struct ofport *ofport; |
1740 | ||
1741 | HMAP_FOR_EACH (ofport, hmap_node, &ofproto->up.ports) { | |
1742 | set_stp_port(ofport, NULL); | |
1743 | } | |
1744 | ||
21f7563c JP |
1745 | stp_destroy(ofproto->stp); |
1746 | ofproto->stp = NULL; | |
1747 | } | |
1748 | ||
1749 | return 0; | |
1750 | } | |
1751 | ||
1752 | static int | |
1753 | get_stp_status(struct ofproto *ofproto_, struct ofproto_stp_status *s) | |
1754 | { | |
1755 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
1756 | ||
1757 | if (ofproto->stp) { | |
1758 | s->enabled = true; | |
1759 | s->bridge_id = stp_get_bridge_id(ofproto->stp); | |
1760 | s->designated_root = stp_get_designated_root(ofproto->stp); | |
1761 | s->root_path_cost = stp_get_root_path_cost(ofproto->stp); | |
1762 | } else { | |
1763 | s->enabled = false; | |
1764 | } | |
1765 | ||
1766 | return 0; | |
1767 | } | |
1768 | ||
1769 | static void | |
1770 | update_stp_port_state(struct ofport_dpif *ofport) | |
1771 | { | |
1772 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto); | |
1773 | enum stp_state state; | |
1774 | ||
1775 | /* Figure out new state. */ | |
1776 | state = ofport->stp_port ? stp_port_get_state(ofport->stp_port) | |
1777 | : STP_DISABLED; | |
1778 | ||
1779 | /* Update state. */ | |
1780 | if (ofport->stp_state != state) { | |
9e1fd49b | 1781 | enum ofputil_port_state of_state; |
21f7563c JP |
1782 | bool fwd_change; |
1783 | ||
1784 | VLOG_DBG_RL(&rl, "port %s: STP state changed from %s to %s", | |
1785 | netdev_get_name(ofport->up.netdev), | |
1786 | stp_state_name(ofport->stp_state), | |
1787 | stp_state_name(state)); | |
1788 | if (stp_learn_in_state(ofport->stp_state) | |
1789 | != stp_learn_in_state(state)) { | |
1790 | /* xxx Learning action flows should also be flushed. */ | |
d0040604 | 1791 | mac_learning_flush(ofproto->ml, &ofproto->revalidate_set); |
21f7563c JP |
1792 | } |
1793 | fwd_change = stp_forward_in_state(ofport->stp_state) | |
1794 | != stp_forward_in_state(state); | |
1795 | ||
3c4a309c | 1796 | ofproto->need_revalidate = REV_STP; |
21f7563c JP |
1797 | ofport->stp_state = state; |
1798 | ofport->stp_state_entered = time_msec(); | |
1799 | ||
b308140a | 1800 | if (fwd_change && ofport->bundle) { |
21f7563c JP |
1801 | bundle_update(ofport->bundle); |
1802 | } | |
1803 | ||
1804 | /* Update the STP state bits in the OpenFlow port description. */ | |
9e1fd49b BP |
1805 | of_state = ofport->up.pp.state & ~OFPUTIL_PS_STP_MASK; |
1806 | of_state |= (state == STP_LISTENING ? OFPUTIL_PS_STP_LISTEN | |
1807 | : state == STP_LEARNING ? OFPUTIL_PS_STP_LEARN | |
1808 | : state == STP_FORWARDING ? OFPUTIL_PS_STP_FORWARD | |
1809 | : state == STP_BLOCKING ? OFPUTIL_PS_STP_BLOCK | |
1810 | : 0); | |
21f7563c JP |
1811 | ofproto_port_set_state(&ofport->up, of_state); |
1812 | } | |
1813 | } | |
1814 | ||
1815 | /* Configures STP on 'ofport_' using the settings defined in 's'. The | |
1816 | * caller is responsible for assigning STP port numbers and ensuring | |
1817 | * there are no duplicates. */ | |
1818 | static int | |
1819 | set_stp_port(struct ofport *ofport_, | |
1820 | const struct ofproto_port_stp_settings *s) | |
1821 | { | |
1822 | struct ofport_dpif *ofport = ofport_dpif_cast(ofport_); | |
1823 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto); | |
1824 | struct stp_port *sp = ofport->stp_port; | |
1825 | ||
1826 | if (!s || !s->enable) { | |
1827 | if (sp) { | |
1828 | ofport->stp_port = NULL; | |
1829 | stp_port_disable(sp); | |
ecd12731 | 1830 | update_stp_port_state(ofport); |
21f7563c JP |
1831 | } |
1832 | return 0; | |
1833 | } else if (sp && stp_port_no(sp) != s->port_num | |
1834 | && ofport == stp_port_get_aux(sp)) { | |
1835 | /* The port-id changed, so disable the old one if it's not | |
1836 | * already in use by another port. */ | |
1837 | stp_port_disable(sp); | |
1838 | } | |
1839 | ||
1840 | sp = ofport->stp_port = stp_get_port(ofproto->stp, s->port_num); | |
1841 | stp_port_enable(sp); | |
1842 | ||
1843 | stp_port_set_aux(sp, ofport); | |
1844 | stp_port_set_priority(sp, s->priority); | |
1845 | stp_port_set_path_cost(sp, s->path_cost); | |
1846 | ||
1847 | update_stp_port_state(ofport); | |
1848 | ||
1849 | return 0; | |
1850 | } | |
1851 | ||
1852 | static int | |
1853 | get_stp_port_status(struct ofport *ofport_, | |
1854 | struct ofproto_port_stp_status *s) | |
1855 | { | |
1856 | struct ofport_dpif *ofport = ofport_dpif_cast(ofport_); | |
1857 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto); | |
1858 | struct stp_port *sp = ofport->stp_port; | |
1859 | ||
1860 | if (!ofproto->stp || !sp) { | |
1861 | s->enabled = false; | |
1862 | return 0; | |
1863 | } | |
1864 | ||
1865 | s->enabled = true; | |
1866 | s->port_id = stp_port_get_id(sp); | |
1867 | s->state = stp_port_get_state(sp); | |
1868 | s->sec_in_state = (time_msec() - ofport->stp_state_entered) / 1000; | |
1869 | s->role = stp_port_get_role(sp); | |
80740385 | 1870 | stp_port_get_counts(sp, &s->tx_count, &s->rx_count, &s->error_count); |
21f7563c JP |
1871 | |
1872 | return 0; | |
1873 | } | |
1874 | ||
1875 | static void | |
1876 | stp_run(struct ofproto_dpif *ofproto) | |
1877 | { | |
1878 | if (ofproto->stp) { | |
1879 | long long int now = time_msec(); | |
1880 | long long int elapsed = now - ofproto->stp_last_tick; | |
1881 | struct stp_port *sp; | |
1882 | ||
1883 | if (elapsed > 0) { | |
1884 | stp_tick(ofproto->stp, MIN(INT_MAX, elapsed)); | |
1885 | ofproto->stp_last_tick = now; | |
1886 | } | |
1887 | while (stp_get_changed_port(ofproto->stp, &sp)) { | |
1888 | struct ofport_dpif *ofport = stp_port_get_aux(sp); | |
1889 | ||
1890 | if (ofport) { | |
1891 | update_stp_port_state(ofport); | |
1892 | } | |
1893 | } | |
6ae50723 EJ |
1894 | |
1895 | if (stp_check_and_reset_fdb_flush(ofproto->stp)) { | |
1896 | mac_learning_flush(ofproto->ml, &ofproto->revalidate_set); | |
1897 | } | |
21f7563c JP |
1898 | } |
1899 | } | |
1900 | ||
1901 | static void | |
1902 | stp_wait(struct ofproto_dpif *ofproto) | |
1903 | { | |
1904 | if (ofproto->stp) { | |
1905 | poll_timer_wait(1000); | |
1906 | } | |
1907 | } | |
1908 | ||
1909 | /* Returns true if STP should process 'flow'. */ | |
1910 | static bool | |
1911 | stp_should_process_flow(const struct flow *flow) | |
1912 | { | |
1913 | return eth_addr_equals(flow->dl_dst, eth_addr_stp); | |
1914 | } | |
1915 | ||
1916 | static void | |
1917 | stp_process_packet(const struct ofport_dpif *ofport, | |
1918 | const struct ofpbuf *packet) | |
1919 | { | |
1920 | struct ofpbuf payload = *packet; | |
1921 | struct eth_header *eth = payload.data; | |
1922 | struct stp_port *sp = ofport->stp_port; | |
1923 | ||
1924 | /* Sink packets on ports that have STP disabled when the bridge has | |
1925 | * STP enabled. */ | |
1926 | if (!sp || stp_port_get_state(sp) == STP_DISABLED) { | |
1927 | return; | |
1928 | } | |
1929 | ||
1930 | /* Trim off padding on payload. */ | |
c573540b BP |
1931 | if (payload.size > ntohs(eth->eth_type) + ETH_HEADER_LEN) { |
1932 | payload.size = ntohs(eth->eth_type) + ETH_HEADER_LEN; | |
21f7563c JP |
1933 | } |
1934 | ||
1935 | if (ofpbuf_try_pull(&payload, ETH_HEADER_LEN + LLC_HEADER_LEN)) { | |
1936 | stp_received_bpdu(sp, payload.data, payload.size); | |
1937 | } | |
1938 | } | |
1939 | \f | |
8b36f51e EJ |
1940 | static struct priority_to_dscp * |
1941 | get_priority(const struct ofport_dpif *ofport, uint32_t priority) | |
1942 | { | |
1943 | struct priority_to_dscp *pdscp; | |
1944 | uint32_t hash; | |
1945 | ||
1946 | hash = hash_int(priority, 0); | |
1947 | HMAP_FOR_EACH_IN_BUCKET (pdscp, hmap_node, hash, &ofport->priorities) { | |
1948 | if (pdscp->priority == priority) { | |
1949 | return pdscp; | |
1950 | } | |
1951 | } | |
1952 | return NULL; | |
1953 | } | |
1954 | ||
1955 | static void | |
1956 | ofport_clear_priorities(struct ofport_dpif *ofport) | |
1957 | { | |
1958 | struct priority_to_dscp *pdscp, *next; | |
1959 | ||
1960 | HMAP_FOR_EACH_SAFE (pdscp, next, hmap_node, &ofport->priorities) { | |
1961 | hmap_remove(&ofport->priorities, &pdscp->hmap_node); | |
1962 | free(pdscp); | |
1963 | } | |
1964 | } | |
1965 | ||
1966 | static int | |
1967 | set_queues(struct ofport *ofport_, | |
1968 | const struct ofproto_port_queue *qdscp_list, | |
1969 | size_t n_qdscp) | |
1970 | { | |
1971 | struct ofport_dpif *ofport = ofport_dpif_cast(ofport_); | |
1972 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto); | |
1973 | struct hmap new = HMAP_INITIALIZER(&new); | |
1974 | size_t i; | |
1975 | ||
1976 | for (i = 0; i < n_qdscp; i++) { | |
1977 | struct priority_to_dscp *pdscp; | |
1978 | uint32_t priority; | |
1979 | uint8_t dscp; | |
1980 | ||
1981 | dscp = (qdscp_list[i].dscp << 2) & IP_DSCP_MASK; | |
acf60855 | 1982 | if (dpif_queue_to_priority(ofproto->backer->dpif, qdscp_list[i].queue, |
8b36f51e EJ |
1983 | &priority)) { |
1984 | continue; | |
1985 | } | |
1986 | ||
1987 | pdscp = get_priority(ofport, priority); | |
1988 | if (pdscp) { | |
1989 | hmap_remove(&ofport->priorities, &pdscp->hmap_node); | |
1990 | } else { | |
1991 | pdscp = xmalloc(sizeof *pdscp); | |
1992 | pdscp->priority = priority; | |
1993 | pdscp->dscp = dscp; | |
3c4a309c | 1994 | ofproto->need_revalidate = REV_RECONFIGURE; |
8b36f51e EJ |
1995 | } |
1996 | ||
1997 | if (pdscp->dscp != dscp) { | |
1998 | pdscp->dscp = dscp; | |
3c4a309c | 1999 | ofproto->need_revalidate = REV_RECONFIGURE; |
8b36f51e EJ |
2000 | } |
2001 | ||
2002 | hmap_insert(&new, &pdscp->hmap_node, hash_int(pdscp->priority, 0)); | |
2003 | } | |
2004 | ||
2005 | if (!hmap_is_empty(&ofport->priorities)) { | |
2006 | ofport_clear_priorities(ofport); | |
3c4a309c | 2007 | ofproto->need_revalidate = REV_RECONFIGURE; |
8b36f51e EJ |
2008 | } |
2009 | ||
2010 | hmap_swap(&new, &ofport->priorities); | |
2011 | hmap_destroy(&new); | |
2012 | ||
2013 | return 0; | |
2014 | } | |
2015 | \f | |
abe529af BP |
2016 | /* Bundles. */ |
2017 | ||
b44a10b7 BP |
2018 | /* Expires all MAC learning entries associated with 'bundle' and forces its |
2019 | * ofproto to revalidate every flow. | |
2020 | * | |
2021 | * Normally MAC learning entries are removed only from the ofproto associated | |
2022 | * with 'bundle', but if 'all_ofprotos' is true, then the MAC learning entries | |
2023 | * are removed from every ofproto. When patch ports and SLB bonds are in use | |
2024 | * and a VM migration happens and the gratuitous ARPs are somehow lost, this | |
2025 | * avoids a MAC_ENTRY_IDLE_TIME delay before the migrated VM can communicate | |
2026 | * with the host from which it migrated. */ | |
abe529af | 2027 | static void |
b44a10b7 | 2028 | bundle_flush_macs(struct ofbundle *bundle, bool all_ofprotos) |
abe529af BP |
2029 | { |
2030 | struct ofproto_dpif *ofproto = bundle->ofproto; | |
2031 | struct mac_learning *ml = ofproto->ml; | |
2032 | struct mac_entry *mac, *next_mac; | |
2033 | ||
3c4a309c | 2034 | ofproto->need_revalidate = REV_RECONFIGURE; |
abe529af BP |
2035 | LIST_FOR_EACH_SAFE (mac, next_mac, lru_node, &ml->lrus) { |
2036 | if (mac->port.p == bundle) { | |
b44a10b7 BP |
2037 | if (all_ofprotos) { |
2038 | struct ofproto_dpif *o; | |
2039 | ||
2040 | HMAP_FOR_EACH (o, all_ofproto_dpifs_node, &all_ofproto_dpifs) { | |
2041 | if (o != ofproto) { | |
2042 | struct mac_entry *e; | |
2043 | ||
2044 | e = mac_learning_lookup(o->ml, mac->mac, mac->vlan, | |
2045 | NULL); | |
2046 | if (e) { | |
2047 | tag_set_add(&o->revalidate_set, e->tag); | |
2048 | mac_learning_expire(o->ml, e); | |
2049 | } | |
2050 | } | |
2051 | } | |
2052 | } | |
2053 | ||
abe529af BP |
2054 | mac_learning_expire(ml, mac); |
2055 | } | |
2056 | } | |
2057 | } | |
2058 | ||
2059 | static struct ofbundle * | |
2060 | bundle_lookup(const struct ofproto_dpif *ofproto, void *aux) | |
2061 | { | |
2062 | struct ofbundle *bundle; | |
2063 | ||
2064 | HMAP_FOR_EACH_IN_BUCKET (bundle, hmap_node, hash_pointer(aux, 0), | |
2065 | &ofproto->bundles) { | |
2066 | if (bundle->aux == aux) { | |
2067 | return bundle; | |
2068 | } | |
2069 | } | |
2070 | return NULL; | |
2071 | } | |
2072 | ||
2073 | /* Looks up each of the 'n_auxes' pointers in 'auxes' as bundles and adds the | |
2074 | * ones that are found to 'bundles'. */ | |
2075 | static void | |
2076 | bundle_lookup_multiple(struct ofproto_dpif *ofproto, | |
2077 | void **auxes, size_t n_auxes, | |
2078 | struct hmapx *bundles) | |
2079 | { | |
2080 | size_t i; | |
2081 | ||
2082 | hmapx_init(bundles); | |
2083 | for (i = 0; i < n_auxes; i++) { | |
2084 | struct ofbundle *bundle = bundle_lookup(ofproto, auxes[i]); | |
2085 | if (bundle) { | |
2086 | hmapx_add(bundles, bundle); | |
2087 | } | |
2088 | } | |
2089 | } | |
2090 | ||
7bde8dd8 JP |
2091 | static void |
2092 | bundle_update(struct ofbundle *bundle) | |
2093 | { | |
2094 | struct ofport_dpif *port; | |
2095 | ||
2096 | bundle->floodable = true; | |
2097 | LIST_FOR_EACH (port, bundle_node, &bundle->ports) { | |
9e1fd49b BP |
2098 | if (port->up.pp.config & OFPUTIL_PC_NO_FLOOD |
2099 | || !stp_forward_in_state(port->stp_state)) { | |
7bde8dd8 JP |
2100 | bundle->floodable = false; |
2101 | break; | |
2102 | } | |
2103 | } | |
2104 | } | |
2105 | ||
abe529af BP |
2106 | static void |
2107 | bundle_del_port(struct ofport_dpif *port) | |
2108 | { | |
2109 | struct ofbundle *bundle = port->bundle; | |
2110 | ||
3c4a309c | 2111 | bundle->ofproto->need_revalidate = REV_RECONFIGURE; |
6f77f4ae | 2112 | |
abe529af BP |
2113 | list_remove(&port->bundle_node); |
2114 | port->bundle = NULL; | |
2115 | ||
2116 | if (bundle->lacp) { | |
2117 | lacp_slave_unregister(bundle->lacp, port); | |
2118 | } | |
2119 | if (bundle->bond) { | |
2120 | bond_slave_unregister(bundle->bond, port); | |
2121 | } | |
2122 | ||
7bde8dd8 | 2123 | bundle_update(bundle); |
abe529af BP |
2124 | } |
2125 | ||
2126 | static bool | |
2127 | bundle_add_port(struct ofbundle *bundle, uint32_t ofp_port, | |
00794817 BP |
2128 | struct lacp_slave_settings *lacp, |
2129 | uint32_t bond_stable_id) | |
abe529af BP |
2130 | { |
2131 | struct ofport_dpif *port; | |
2132 | ||
2133 | port = get_ofp_port(bundle->ofproto, ofp_port); | |
2134 | if (!port) { | |
2135 | return false; | |
2136 | } | |
2137 | ||
2138 | if (port->bundle != bundle) { | |
3c4a309c | 2139 | bundle->ofproto->need_revalidate = REV_RECONFIGURE; |
abe529af BP |
2140 | if (port->bundle) { |
2141 | bundle_del_port(port); | |
2142 | } | |
2143 | ||
2144 | port->bundle = bundle; | |
2145 | list_push_back(&bundle->ports, &port->bundle_node); | |
9e1fd49b BP |
2146 | if (port->up.pp.config & OFPUTIL_PC_NO_FLOOD |
2147 | || !stp_forward_in_state(port->stp_state)) { | |
abe529af BP |
2148 | bundle->floodable = false; |
2149 | } | |
2150 | } | |
2151 | if (lacp) { | |
3c4a309c | 2152 | port->bundle->ofproto->need_revalidate = REV_RECONFIGURE; |
abe529af BP |
2153 | lacp_slave_register(bundle->lacp, port, lacp); |
2154 | } | |
2155 | ||
00794817 BP |
2156 | port->bond_stable_id = bond_stable_id; |
2157 | ||
abe529af BP |
2158 | return true; |
2159 | } | |
2160 | ||
2161 | static void | |
2162 | bundle_destroy(struct ofbundle *bundle) | |
2163 | { | |
2164 | struct ofproto_dpif *ofproto; | |
2165 | struct ofport_dpif *port, *next_port; | |
2166 | int i; | |
2167 | ||
2168 | if (!bundle) { | |
2169 | return; | |
2170 | } | |
2171 | ||
2172 | ofproto = bundle->ofproto; | |
2173 | for (i = 0; i < MAX_MIRRORS; i++) { | |
2174 | struct ofmirror *m = ofproto->mirrors[i]; | |
2175 | if (m) { | |
2176 | if (m->out == bundle) { | |
2177 | mirror_destroy(m); | |
2178 | } else if (hmapx_find_and_delete(&m->srcs, bundle) | |
2179 | || hmapx_find_and_delete(&m->dsts, bundle)) { | |
3c4a309c | 2180 | ofproto->need_revalidate = REV_RECONFIGURE; |
abe529af BP |
2181 | } |
2182 | } | |
2183 | } | |
2184 | ||
2185 | LIST_FOR_EACH_SAFE (port, next_port, bundle_node, &bundle->ports) { | |
2186 | bundle_del_port(port); | |
2187 | } | |
2188 | ||
b44a10b7 | 2189 | bundle_flush_macs(bundle, true); |
abe529af BP |
2190 | hmap_remove(&ofproto->bundles, &bundle->hmap_node); |
2191 | free(bundle->name); | |
2192 | free(bundle->trunks); | |
2193 | lacp_destroy(bundle->lacp); | |
2194 | bond_destroy(bundle->bond); | |
2195 | free(bundle); | |
2196 | } | |
2197 | ||
2198 | static int | |
2199 | bundle_set(struct ofproto *ofproto_, void *aux, | |
2200 | const struct ofproto_bundle_settings *s) | |
2201 | { | |
2202 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
2203 | bool need_flush = false; | |
abe529af BP |
2204 | struct ofport_dpif *port; |
2205 | struct ofbundle *bundle; | |
ecac4ebf BP |
2206 | unsigned long *trunks; |
2207 | int vlan; | |
abe529af BP |
2208 | size_t i; |
2209 | bool ok; | |
2210 | ||
2211 | if (!s) { | |
2212 | bundle_destroy(bundle_lookup(ofproto, aux)); | |
2213 | return 0; | |
2214 | } | |
2215 | ||
2216 | assert(s->n_slaves == 1 || s->bond != NULL); | |
2217 | assert((s->lacp != NULL) == (s->lacp_slaves != NULL)); | |
2218 | ||
2219 | bundle = bundle_lookup(ofproto, aux); | |
2220 | if (!bundle) { | |
2221 | bundle = xmalloc(sizeof *bundle); | |
2222 | ||
2223 | bundle->ofproto = ofproto; | |
2224 | hmap_insert(&ofproto->bundles, &bundle->hmap_node, | |
2225 | hash_pointer(aux, 0)); | |
2226 | bundle->aux = aux; | |
2227 | bundle->name = NULL; | |
2228 | ||
2229 | list_init(&bundle->ports); | |
ecac4ebf | 2230 | bundle->vlan_mode = PORT_VLAN_TRUNK; |
abe529af BP |
2231 | bundle->vlan = -1; |
2232 | bundle->trunks = NULL; | |
5e9ceccd | 2233 | bundle->use_priority_tags = s->use_priority_tags; |
abe529af BP |
2234 | bundle->lacp = NULL; |
2235 | bundle->bond = NULL; | |
2236 | ||
2237 | bundle->floodable = true; | |
2238 | ||
2239 | bundle->src_mirrors = 0; | |
2240 | bundle->dst_mirrors = 0; | |
2241 | bundle->mirror_out = 0; | |
2242 | } | |
2243 | ||
2244 | if (!bundle->name || strcmp(s->name, bundle->name)) { | |
2245 | free(bundle->name); | |
2246 | bundle->name = xstrdup(s->name); | |
2247 | } | |
2248 | ||
2249 | /* LACP. */ | |
2250 | if (s->lacp) { | |
2251 | if (!bundle->lacp) { | |
3c4a309c | 2252 | ofproto->need_revalidate = REV_RECONFIGURE; |
abe529af BP |
2253 | bundle->lacp = lacp_create(); |
2254 | } | |
2255 | lacp_configure(bundle->lacp, s->lacp); | |
2256 | } else { | |
2257 | lacp_destroy(bundle->lacp); | |
2258 | bundle->lacp = NULL; | |
2259 | } | |
2260 | ||
2261 | /* Update set of ports. */ | |
2262 | ok = true; | |
2263 | for (i = 0; i < s->n_slaves; i++) { | |
2264 | if (!bundle_add_port(bundle, s->slaves[i], | |
00794817 BP |
2265 | s->lacp ? &s->lacp_slaves[i] : NULL, |
2266 | s->bond_stable_ids ? s->bond_stable_ids[i] : 0)) { | |
abe529af BP |
2267 | ok = false; |
2268 | } | |
2269 | } | |
2270 | if (!ok || list_size(&bundle->ports) != s->n_slaves) { | |
2271 | struct ofport_dpif *next_port; | |
2272 | ||
2273 | LIST_FOR_EACH_SAFE (port, next_port, bundle_node, &bundle->ports) { | |
2274 | for (i = 0; i < s->n_slaves; i++) { | |
56c769ab | 2275 | if (s->slaves[i] == port->up.ofp_port) { |
abe529af BP |
2276 | goto found; |
2277 | } | |
2278 | } | |
2279 | ||
2280 | bundle_del_port(port); | |
2281 | found: ; | |
2282 | } | |
2283 | } | |
2284 | assert(list_size(&bundle->ports) <= s->n_slaves); | |
2285 | ||
2286 | if (list_is_empty(&bundle->ports)) { | |
2287 | bundle_destroy(bundle); | |
2288 | return EINVAL; | |
2289 | } | |
2290 | ||
ecac4ebf | 2291 | /* Set VLAN tagging mode */ |
5e9ceccd BP |
2292 | if (s->vlan_mode != bundle->vlan_mode |
2293 | || s->use_priority_tags != bundle->use_priority_tags) { | |
ecac4ebf | 2294 | bundle->vlan_mode = s->vlan_mode; |
5e9ceccd | 2295 | bundle->use_priority_tags = s->use_priority_tags; |
ecac4ebf BP |
2296 | need_flush = true; |
2297 | } | |
2298 | ||
abe529af | 2299 | /* Set VLAN tag. */ |
ecac4ebf BP |
2300 | vlan = (s->vlan_mode == PORT_VLAN_TRUNK ? -1 |
2301 | : s->vlan >= 0 && s->vlan <= 4095 ? s->vlan | |
2302 | : 0); | |
2303 | if (vlan != bundle->vlan) { | |
2304 | bundle->vlan = vlan; | |
abe529af BP |
2305 | need_flush = true; |
2306 | } | |
2307 | ||
2308 | /* Get trunked VLANs. */ | |
ecac4ebf BP |
2309 | switch (s->vlan_mode) { |
2310 | case PORT_VLAN_ACCESS: | |
2311 | trunks = NULL; | |
2312 | break; | |
2313 | ||
2314 | case PORT_VLAN_TRUNK: | |
ebc56baa | 2315 | trunks = CONST_CAST(unsigned long *, s->trunks); |
ecac4ebf BP |
2316 | break; |
2317 | ||
2318 | case PORT_VLAN_NATIVE_UNTAGGED: | |
2319 | case PORT_VLAN_NATIVE_TAGGED: | |
2320 | if (vlan != 0 && (!s->trunks | |
2321 | || !bitmap_is_set(s->trunks, vlan) | |
2322 | || bitmap_is_set(s->trunks, 0))) { | |
2323 | /* Force trunking the native VLAN and prohibit trunking VLAN 0. */ | |
2324 | if (s->trunks) { | |
2325 | trunks = bitmap_clone(s->trunks, 4096); | |
2326 | } else { | |
2327 | trunks = bitmap_allocate1(4096); | |
2328 | } | |
2329 | bitmap_set1(trunks, vlan); | |
2330 | bitmap_set0(trunks, 0); | |
2331 | } else { | |
ebc56baa | 2332 | trunks = CONST_CAST(unsigned long *, s->trunks); |
ecac4ebf BP |
2333 | } |
2334 | break; | |
2335 | ||
2336 | default: | |
2337 | NOT_REACHED(); | |
2338 | } | |
abe529af BP |
2339 | if (!vlan_bitmap_equal(trunks, bundle->trunks)) { |
2340 | free(bundle->trunks); | |
ecac4ebf BP |
2341 | if (trunks == s->trunks) { |
2342 | bundle->trunks = vlan_bitmap_clone(trunks); | |
2343 | } else { | |
2344 | bundle->trunks = trunks; | |
2345 | trunks = NULL; | |
2346 | } | |
abe529af BP |
2347 | need_flush = true; |
2348 | } | |
ecac4ebf BP |
2349 | if (trunks != s->trunks) { |
2350 | free(trunks); | |
2351 | } | |
abe529af BP |
2352 | |
2353 | /* Bonding. */ | |
2354 | if (!list_is_short(&bundle->ports)) { | |
2355 | bundle->ofproto->has_bonded_bundles = true; | |
2356 | if (bundle->bond) { | |
2357 | if (bond_reconfigure(bundle->bond, s->bond)) { | |
3c4a309c | 2358 | ofproto->need_revalidate = REV_RECONFIGURE; |
abe529af BP |
2359 | } |
2360 | } else { | |
2361 | bundle->bond = bond_create(s->bond); | |
3c4a309c | 2362 | ofproto->need_revalidate = REV_RECONFIGURE; |
abe529af BP |
2363 | } |
2364 | ||
2365 | LIST_FOR_EACH (port, bundle_node, &bundle->ports) { | |
00794817 | 2366 | bond_slave_register(bundle->bond, port, port->bond_stable_id, |
abe529af BP |
2367 | port->up.netdev); |
2368 | } | |
2369 | } else { | |
2370 | bond_destroy(bundle->bond); | |
2371 | bundle->bond = NULL; | |
2372 | } | |
2373 | ||
2374 | /* If we changed something that would affect MAC learning, un-learn | |
2375 | * everything on this port and force flow revalidation. */ | |
2376 | if (need_flush) { | |
b44a10b7 | 2377 | bundle_flush_macs(bundle, false); |
abe529af BP |
2378 | } |
2379 | ||
2380 | return 0; | |
2381 | } | |
2382 | ||
2383 | static void | |
2384 | bundle_remove(struct ofport *port_) | |
2385 | { | |
2386 | struct ofport_dpif *port = ofport_dpif_cast(port_); | |
2387 | struct ofbundle *bundle = port->bundle; | |
2388 | ||
2389 | if (bundle) { | |
2390 | bundle_del_port(port); | |
2391 | if (list_is_empty(&bundle->ports)) { | |
2392 | bundle_destroy(bundle); | |
2393 | } else if (list_is_short(&bundle->ports)) { | |
2394 | bond_destroy(bundle->bond); | |
2395 | bundle->bond = NULL; | |
2396 | } | |
2397 | } | |
2398 | } | |
2399 | ||
2400 | static void | |
5f877369 | 2401 | send_pdu_cb(void *port_, const void *pdu, size_t pdu_size) |
abe529af BP |
2402 | { |
2403 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 10); | |
2404 | struct ofport_dpif *port = port_; | |
2405 | uint8_t ea[ETH_ADDR_LEN]; | |
2406 | int error; | |
2407 | ||
2408 | error = netdev_get_etheraddr(port->up.netdev, ea); | |
2409 | if (!error) { | |
abe529af | 2410 | struct ofpbuf packet; |
5f877369 | 2411 | void *packet_pdu; |
abe529af BP |
2412 | |
2413 | ofpbuf_init(&packet, 0); | |
2414 | packet_pdu = eth_compose(&packet, eth_addr_lacp, ea, ETH_TYPE_LACP, | |
5f877369 EJ |
2415 | pdu_size); |
2416 | memcpy(packet_pdu, pdu, pdu_size); | |
2417 | ||
97d6520b | 2418 | send_packet(port, &packet); |
abe529af BP |
2419 | ofpbuf_uninit(&packet); |
2420 | } else { | |
2421 | VLOG_ERR_RL(&rl, "port %s: cannot obtain Ethernet address of iface " | |
2422 | "%s (%s)", port->bundle->name, | |
2423 | netdev_get_name(port->up.netdev), strerror(error)); | |
2424 | } | |
2425 | } | |
2426 | ||
2427 | static void | |
2428 | bundle_send_learning_packets(struct ofbundle *bundle) | |
2429 | { | |
2430 | struct ofproto_dpif *ofproto = bundle->ofproto; | |
2431 | int error, n_packets, n_errors; | |
2432 | struct mac_entry *e; | |
2433 | ||
2434 | error = n_packets = n_errors = 0; | |
2435 | LIST_FOR_EACH (e, lru_node, &ofproto->ml->lrus) { | |
2436 | if (e->port.p != bundle) { | |
ea131871 JG |
2437 | struct ofpbuf *learning_packet; |
2438 | struct ofport_dpif *port; | |
4dd1e3ca | 2439 | void *port_void; |
ea131871 JG |
2440 | int ret; |
2441 | ||
4dd1e3ca BP |
2442 | /* The assignment to "port" is unnecessary but makes "grep"ing for |
2443 | * struct ofport_dpif more effective. */ | |
2444 | learning_packet = bond_compose_learning_packet(bundle->bond, | |
2445 | e->mac, e->vlan, | |
2446 | &port_void); | |
2447 | port = port_void; | |
97d6520b | 2448 | ret = send_packet(port, learning_packet); |
ea131871 | 2449 | ofpbuf_delete(learning_packet); |
abe529af BP |
2450 | if (ret) { |
2451 | error = ret; | |
2452 | n_errors++; | |
2453 | } | |
2454 | n_packets++; | |
2455 | } | |
2456 | } | |
2457 | ||
2458 | if (n_errors) { | |
2459 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
2460 | VLOG_WARN_RL(&rl, "bond %s: %d errors sending %d gratuitous learning " | |
2461 | "packets, last error was: %s", | |
2462 | bundle->name, n_errors, n_packets, strerror(error)); | |
2463 | } else { | |
2464 | VLOG_DBG("bond %s: sent %d gratuitous learning packets", | |
2465 | bundle->name, n_packets); | |
2466 | } | |
2467 | } | |
2468 | ||
2469 | static void | |
2470 | bundle_run(struct ofbundle *bundle) | |
2471 | { | |
2472 | if (bundle->lacp) { | |
2473 | lacp_run(bundle->lacp, send_pdu_cb); | |
2474 | } | |
2475 | if (bundle->bond) { | |
2476 | struct ofport_dpif *port; | |
2477 | ||
2478 | LIST_FOR_EACH (port, bundle_node, &bundle->ports) { | |
015e08bc | 2479 | bond_slave_set_may_enable(bundle->bond, port, port->may_enable); |
abe529af BP |
2480 | } |
2481 | ||
2482 | bond_run(bundle->bond, &bundle->ofproto->revalidate_set, | |
bdebeece | 2483 | lacp_status(bundle->lacp)); |
abe529af BP |
2484 | if (bond_should_send_learning_packets(bundle->bond)) { |
2485 | bundle_send_learning_packets(bundle); | |
2486 | } | |
2487 | } | |
2488 | } | |
2489 | ||
2490 | static void | |
2491 | bundle_wait(struct ofbundle *bundle) | |
2492 | { | |
2493 | if (bundle->lacp) { | |
2494 | lacp_wait(bundle->lacp); | |
2495 | } | |
2496 | if (bundle->bond) { | |
2497 | bond_wait(bundle->bond); | |
2498 | } | |
2499 | } | |
2500 | \f | |
2501 | /* Mirrors. */ | |
2502 | ||
2503 | static int | |
2504 | mirror_scan(struct ofproto_dpif *ofproto) | |
2505 | { | |
2506 | int idx; | |
2507 | ||
2508 | for (idx = 0; idx < MAX_MIRRORS; idx++) { | |
2509 | if (!ofproto->mirrors[idx]) { | |
2510 | return idx; | |
2511 | } | |
2512 | } | |
2513 | return -1; | |
2514 | } | |
2515 | ||
2516 | static struct ofmirror * | |
2517 | mirror_lookup(struct ofproto_dpif *ofproto, void *aux) | |
2518 | { | |
2519 | int i; | |
2520 | ||
2521 | for (i = 0; i < MAX_MIRRORS; i++) { | |
2522 | struct ofmirror *mirror = ofproto->mirrors[i]; | |
2523 | if (mirror && mirror->aux == aux) { | |
2524 | return mirror; | |
2525 | } | |
2526 | } | |
2527 | ||
2528 | return NULL; | |
2529 | } | |
2530 | ||
9ba15e2a BP |
2531 | /* Update the 'dup_mirrors' member of each of the ofmirrors in 'ofproto'. */ |
2532 | static void | |
2533 | mirror_update_dups(struct ofproto_dpif *ofproto) | |
2534 | { | |
2535 | int i; | |
2536 | ||
2537 | for (i = 0; i < MAX_MIRRORS; i++) { | |
2538 | struct ofmirror *m = ofproto->mirrors[i]; | |
2539 | ||
2540 | if (m) { | |
2541 | m->dup_mirrors = MIRROR_MASK_C(1) << i; | |
2542 | } | |
2543 | } | |
2544 | ||
2545 | for (i = 0; i < MAX_MIRRORS; i++) { | |
2546 | struct ofmirror *m1 = ofproto->mirrors[i]; | |
2547 | int j; | |
2548 | ||
2549 | if (!m1) { | |
2550 | continue; | |
2551 | } | |
2552 | ||
2553 | for (j = i + 1; j < MAX_MIRRORS; j++) { | |
2554 | struct ofmirror *m2 = ofproto->mirrors[j]; | |
2555 | ||
edb0540b | 2556 | if (m2 && m1->out == m2->out && m1->out_vlan == m2->out_vlan) { |
9ba15e2a BP |
2557 | m1->dup_mirrors |= MIRROR_MASK_C(1) << j; |
2558 | m2->dup_mirrors |= m1->dup_mirrors; | |
2559 | } | |
2560 | } | |
2561 | } | |
2562 | } | |
2563 | ||
abe529af BP |
2564 | static int |
2565 | mirror_set(struct ofproto *ofproto_, void *aux, | |
2566 | const struct ofproto_mirror_settings *s) | |
2567 | { | |
2568 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
2569 | mirror_mask_t mirror_bit; | |
2570 | struct ofbundle *bundle; | |
2571 | struct ofmirror *mirror; | |
2572 | struct ofbundle *out; | |
2573 | struct hmapx srcs; /* Contains "struct ofbundle *"s. */ | |
2574 | struct hmapx dsts; /* Contains "struct ofbundle *"s. */ | |
2575 | int out_vlan; | |
2576 | ||
2577 | mirror = mirror_lookup(ofproto, aux); | |
2578 | if (!s) { | |
2579 | mirror_destroy(mirror); | |
2580 | return 0; | |
2581 | } | |
2582 | if (!mirror) { | |
2583 | int idx; | |
2584 | ||
2585 | idx = mirror_scan(ofproto); | |
2586 | if (idx < 0) { | |
2587 | VLOG_WARN("bridge %s: maximum of %d port mirrors reached, " | |
2588 | "cannot create %s", | |
2589 | ofproto->up.name, MAX_MIRRORS, s->name); | |
2590 | return EFBIG; | |
2591 | } | |
2592 | ||
2593 | mirror = ofproto->mirrors[idx] = xzalloc(sizeof *mirror); | |
2594 | mirror->ofproto = ofproto; | |
2595 | mirror->idx = idx; | |
8b28d864 | 2596 | mirror->aux = aux; |
abe529af BP |
2597 | mirror->out_vlan = -1; |
2598 | mirror->name = NULL; | |
2599 | } | |
2600 | ||
2601 | if (!mirror->name || strcmp(s->name, mirror->name)) { | |
2602 | free(mirror->name); | |
2603 | mirror->name = xstrdup(s->name); | |
2604 | } | |
2605 | ||
2606 | /* Get the new configuration. */ | |
2607 | if (s->out_bundle) { | |
2608 | out = bundle_lookup(ofproto, s->out_bundle); | |
2609 | if (!out) { | |
2610 | mirror_destroy(mirror); | |
2611 | return EINVAL; | |
2612 | } | |
2613 | out_vlan = -1; | |
2614 | } else { | |
2615 | out = NULL; | |
2616 | out_vlan = s->out_vlan; | |
2617 | } | |
2618 | bundle_lookup_multiple(ofproto, s->srcs, s->n_srcs, &srcs); | |
2619 | bundle_lookup_multiple(ofproto, s->dsts, s->n_dsts, &dsts); | |
2620 | ||
2621 | /* If the configuration has not changed, do nothing. */ | |
2622 | if (hmapx_equals(&srcs, &mirror->srcs) | |
2623 | && hmapx_equals(&dsts, &mirror->dsts) | |
2624 | && vlan_bitmap_equal(mirror->vlans, s->src_vlans) | |
2625 | && mirror->out == out | |
2626 | && mirror->out_vlan == out_vlan) | |
2627 | { | |
2628 | hmapx_destroy(&srcs); | |
2629 | hmapx_destroy(&dsts); | |
2630 | return 0; | |
2631 | } | |
2632 | ||
2633 | hmapx_swap(&srcs, &mirror->srcs); | |
2634 | hmapx_destroy(&srcs); | |
2635 | ||
2636 | hmapx_swap(&dsts, &mirror->dsts); | |
2637 | hmapx_destroy(&dsts); | |
2638 | ||
2639 | free(mirror->vlans); | |
2640 | mirror->vlans = vlan_bitmap_clone(s->src_vlans); | |
2641 | ||
2642 | mirror->out = out; | |
2643 | mirror->out_vlan = out_vlan; | |
2644 | ||
2645 | /* Update bundles. */ | |
2646 | mirror_bit = MIRROR_MASK_C(1) << mirror->idx; | |
2647 | HMAP_FOR_EACH (bundle, hmap_node, &mirror->ofproto->bundles) { | |
2648 | if (hmapx_contains(&mirror->srcs, bundle)) { | |
2649 | bundle->src_mirrors |= mirror_bit; | |
2650 | } else { | |
2651 | bundle->src_mirrors &= ~mirror_bit; | |
2652 | } | |
2653 | ||
2654 | if (hmapx_contains(&mirror->dsts, bundle)) { | |
2655 | bundle->dst_mirrors |= mirror_bit; | |
2656 | } else { | |
2657 | bundle->dst_mirrors &= ~mirror_bit; | |
2658 | } | |
2659 | ||
2660 | if (mirror->out == bundle) { | |
2661 | bundle->mirror_out |= mirror_bit; | |
2662 | } else { | |
2663 | bundle->mirror_out &= ~mirror_bit; | |
2664 | } | |
2665 | } | |
2666 | ||
3c4a309c | 2667 | ofproto->need_revalidate = REV_RECONFIGURE; |
ccb7c863 | 2668 | ofproto->has_mirrors = true; |
d0040604 | 2669 | mac_learning_flush(ofproto->ml, &ofproto->revalidate_set); |
9ba15e2a | 2670 | mirror_update_dups(ofproto); |
abe529af BP |
2671 | |
2672 | return 0; | |
2673 | } | |
2674 | ||
2675 | static void | |
2676 | mirror_destroy(struct ofmirror *mirror) | |
2677 | { | |
2678 | struct ofproto_dpif *ofproto; | |
2679 | mirror_mask_t mirror_bit; | |
2680 | struct ofbundle *bundle; | |
ccb7c863 | 2681 | int i; |
abe529af BP |
2682 | |
2683 | if (!mirror) { | |
2684 | return; | |
2685 | } | |
2686 | ||
2687 | ofproto = mirror->ofproto; | |
3c4a309c | 2688 | ofproto->need_revalidate = REV_RECONFIGURE; |
d0040604 | 2689 | mac_learning_flush(ofproto->ml, &ofproto->revalidate_set); |
abe529af BP |
2690 | |
2691 | mirror_bit = MIRROR_MASK_C(1) << mirror->idx; | |
2692 | HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) { | |
2693 | bundle->src_mirrors &= ~mirror_bit; | |
2694 | bundle->dst_mirrors &= ~mirror_bit; | |
2695 | bundle->mirror_out &= ~mirror_bit; | |
2696 | } | |
2697 | ||
2698 | hmapx_destroy(&mirror->srcs); | |
2699 | hmapx_destroy(&mirror->dsts); | |
2700 | free(mirror->vlans); | |
2701 | ||
2702 | ofproto->mirrors[mirror->idx] = NULL; | |
2703 | free(mirror->name); | |
2704 | free(mirror); | |
9ba15e2a BP |
2705 | |
2706 | mirror_update_dups(ofproto); | |
ccb7c863 BP |
2707 | |
2708 | ofproto->has_mirrors = false; | |
2709 | for (i = 0; i < MAX_MIRRORS; i++) { | |
2710 | if (ofproto->mirrors[i]) { | |
2711 | ofproto->has_mirrors = true; | |
2712 | break; | |
2713 | } | |
2714 | } | |
abe529af BP |
2715 | } |
2716 | ||
9d24de3b JP |
2717 | static int |
2718 | mirror_get_stats(struct ofproto *ofproto_, void *aux, | |
2719 | uint64_t *packets, uint64_t *bytes) | |
2720 | { | |
2721 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
2722 | struct ofmirror *mirror = mirror_lookup(ofproto, aux); | |
2723 | ||
2724 | if (!mirror) { | |
2725 | *packets = *bytes = UINT64_MAX; | |
2726 | return 0; | |
2727 | } | |
2728 | ||
2729 | *packets = mirror->packet_count; | |
2730 | *bytes = mirror->byte_count; | |
2731 | ||
2732 | return 0; | |
2733 | } | |
2734 | ||
abe529af BP |
2735 | static int |
2736 | set_flood_vlans(struct ofproto *ofproto_, unsigned long *flood_vlans) | |
2737 | { | |
2738 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
2739 | if (mac_learning_set_flood_vlans(ofproto->ml, flood_vlans)) { | |
d0040604 | 2740 | mac_learning_flush(ofproto->ml, &ofproto->revalidate_set); |
abe529af BP |
2741 | } |
2742 | return 0; | |
2743 | } | |
2744 | ||
2745 | static bool | |
b4affc74 | 2746 | is_mirror_output_bundle(const struct ofproto *ofproto_, void *aux) |
abe529af BP |
2747 | { |
2748 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
2749 | struct ofbundle *bundle = bundle_lookup(ofproto, aux); | |
2750 | return bundle && bundle->mirror_out != 0; | |
2751 | } | |
8402c74b SS |
2752 | |
2753 | static void | |
b53055f4 | 2754 | forward_bpdu_changed(struct ofproto *ofproto_) |
8402c74b SS |
2755 | { |
2756 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
3c4a309c | 2757 | ofproto->need_revalidate = REV_RECONFIGURE; |
8402c74b | 2758 | } |
e764773c BP |
2759 | |
2760 | static void | |
2761 | set_mac_idle_time(struct ofproto *ofproto_, unsigned int idle_time) | |
2762 | { | |
2763 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
2764 | mac_learning_set_idle_time(ofproto->ml, idle_time); | |
2765 | } | |
abe529af BP |
2766 | \f |
2767 | /* Ports. */ | |
2768 | ||
2769 | static struct ofport_dpif * | |
4acbc98d | 2770 | get_ofp_port(const struct ofproto_dpif *ofproto, uint16_t ofp_port) |
abe529af | 2771 | { |
7df6a8bd BP |
2772 | struct ofport *ofport = ofproto_get_port(&ofproto->up, ofp_port); |
2773 | return ofport ? ofport_dpif_cast(ofport) : NULL; | |
abe529af BP |
2774 | } |
2775 | ||
2776 | static struct ofport_dpif * | |
4acbc98d | 2777 | get_odp_port(const struct ofproto_dpif *ofproto, uint32_t odp_port) |
abe529af | 2778 | { |
e1b1d06a | 2779 | return get_ofp_port(ofproto, odp_port_to_ofp_port(ofproto, odp_port)); |
abe529af BP |
2780 | } |
2781 | ||
2782 | static void | |
e1b1d06a JP |
2783 | ofproto_port_from_dpif_port(struct ofproto_dpif *ofproto, |
2784 | struct ofproto_port *ofproto_port, | |
abe529af BP |
2785 | struct dpif_port *dpif_port) |
2786 | { | |
2787 | ofproto_port->name = dpif_port->name; | |
2788 | ofproto_port->type = dpif_port->type; | |
e1b1d06a | 2789 | ofproto_port->ofp_port = odp_port_to_ofp_port(ofproto, dpif_port->port_no); |
abe529af BP |
2790 | } |
2791 | ||
0aa66d6e EJ |
2792 | static void |
2793 | port_run_fast(struct ofport_dpif *ofport) | |
2794 | { | |
2795 | if (ofport->cfm && cfm_should_send_ccm(ofport->cfm)) { | |
2796 | struct ofpbuf packet; | |
2797 | ||
2798 | ofpbuf_init(&packet, 0); | |
2799 | cfm_compose_ccm(ofport->cfm, &packet, ofport->up.pp.hw_addr); | |
2800 | send_packet(ofport, &packet); | |
2801 | ofpbuf_uninit(&packet); | |
2802 | } | |
2803 | } | |
2804 | ||
abe529af BP |
2805 | static void |
2806 | port_run(struct ofport_dpif *ofport) | |
2807 | { | |
3e5b3fdb EJ |
2808 | long long int carrier_seq = netdev_get_carrier_resets(ofport->up.netdev); |
2809 | bool carrier_changed = carrier_seq != ofport->carrier_seq; | |
015e08bc EJ |
2810 | bool enable = netdev_get_carrier(ofport->up.netdev); |
2811 | ||
3e5b3fdb EJ |
2812 | ofport->carrier_seq = carrier_seq; |
2813 | ||
0aa66d6e | 2814 | port_run_fast(ofport); |
abe529af | 2815 | if (ofport->cfm) { |
4653c558 EJ |
2816 | int cfm_opup = cfm_get_opup(ofport->cfm); |
2817 | ||
abe529af | 2818 | cfm_run(ofport->cfm); |
4653c558 EJ |
2819 | enable = enable && !cfm_get_fault(ofport->cfm); |
2820 | ||
2821 | if (cfm_opup >= 0) { | |
2822 | enable = enable && cfm_opup; | |
2823 | } | |
abe529af | 2824 | } |
015e08bc EJ |
2825 | |
2826 | if (ofport->bundle) { | |
2827 | enable = enable && lacp_slave_may_enable(ofport->bundle->lacp, ofport); | |
3e5b3fdb EJ |
2828 | if (carrier_changed) { |
2829 | lacp_slave_carrier_changed(ofport->bundle->lacp, ofport); | |
2830 | } | |
015e08bc EJ |
2831 | } |
2832 | ||
daff3353 EJ |
2833 | if (ofport->may_enable != enable) { |
2834 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto); | |
2835 | ||
2836 | if (ofproto->has_bundle_action) { | |
3c4a309c | 2837 | ofproto->need_revalidate = REV_PORT_TOGGLED; |
daff3353 EJ |
2838 | } |
2839 | } | |
2840 | ||
015e08bc | 2841 | ofport->may_enable = enable; |
abe529af BP |
2842 | } |
2843 | ||
2844 | static void | |
2845 | port_wait(struct ofport_dpif *ofport) | |
2846 | { | |
2847 | if (ofport->cfm) { | |
2848 | cfm_wait(ofport->cfm); | |
2849 | } | |
2850 | } | |
2851 | ||
2852 | static int | |
2853 | port_query_by_name(const struct ofproto *ofproto_, const char *devname, | |
2854 | struct ofproto_port *ofproto_port) | |
2855 | { | |
2856 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
2857 | struct dpif_port dpif_port; | |
2858 | int error; | |
2859 | ||
acf60855 JP |
2860 | if (!sset_contains(&ofproto->ports, devname)) { |
2861 | return ENODEV; | |
2862 | } | |
2863 | error = dpif_port_query_by_name(ofproto->backer->dpif, | |
2864 | devname, &dpif_port); | |
abe529af | 2865 | if (!error) { |
e1b1d06a | 2866 | ofproto_port_from_dpif_port(ofproto, ofproto_port, &dpif_port); |
abe529af BP |
2867 | } |
2868 | return error; | |
2869 | } | |
2870 | ||
2871 | static int | |
e1b1d06a | 2872 | port_add(struct ofproto *ofproto_, struct netdev *netdev) |
abe529af BP |
2873 | { |
2874 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
e1b1d06a | 2875 | uint32_t odp_port = UINT32_MAX; |
acf60855 | 2876 | int error; |
abe529af | 2877 | |
acf60855 JP |
2878 | error = dpif_port_add(ofproto->backer->dpif, netdev, &odp_port); |
2879 | if (!error) { | |
2880 | sset_add(&ofproto->ports, netdev_get_name(netdev)); | |
2881 | } | |
2882 | return error; | |
abe529af BP |
2883 | } |
2884 | ||
2885 | static int | |
2886 | port_del(struct ofproto *ofproto_, uint16_t ofp_port) | |
2887 | { | |
2888 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
e1b1d06a JP |
2889 | uint32_t odp_port = ofp_port_to_odp_port(ofproto, ofp_port); |
2890 | int error = 0; | |
abe529af | 2891 | |
e1b1d06a | 2892 | if (odp_port != OFPP_NONE) { |
acf60855 | 2893 | error = dpif_port_del(ofproto->backer->dpif, odp_port); |
e1b1d06a | 2894 | } |
abe529af BP |
2895 | if (!error) { |
2896 | struct ofport_dpif *ofport = get_ofp_port(ofproto, ofp_port); | |
2897 | if (ofport) { | |
2898 | /* The caller is going to close ofport->up.netdev. If this is a | |
2899 | * bonded port, then the bond is using that netdev, so remove it | |
2900 | * from the bond. The client will need to reconfigure everything | |
2901 | * after deleting ports, so then the slave will get re-added. */ | |
2902 | bundle_remove(&ofport->up); | |
2903 | } | |
2904 | } | |
2905 | return error; | |
2906 | } | |
2907 | ||
6527c598 PS |
2908 | static int |
2909 | port_get_stats(const struct ofport *ofport_, struct netdev_stats *stats) | |
2910 | { | |
2911 | struct ofport_dpif *ofport = ofport_dpif_cast(ofport_); | |
2912 | int error; | |
2913 | ||
2914 | error = netdev_get_stats(ofport->up.netdev, stats); | |
2915 | ||
2916 | if (!error && ofport->odp_port == OVSP_LOCAL) { | |
2917 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto); | |
2918 | ||
2919 | /* ofproto->stats.tx_packets represents packets that we created | |
2920 | * internally and sent to some port (e.g. packets sent with | |
2921 | * send_packet()). Account for them as if they had come from | |
2922 | * OFPP_LOCAL and got forwarded. */ | |
2923 | ||
2924 | if (stats->rx_packets != UINT64_MAX) { | |
2925 | stats->rx_packets += ofproto->stats.tx_packets; | |
2926 | } | |
2927 | ||
2928 | if (stats->rx_bytes != UINT64_MAX) { | |
2929 | stats->rx_bytes += ofproto->stats.tx_bytes; | |
2930 | } | |
2931 | ||
2932 | /* ofproto->stats.rx_packets represents packets that were received on | |
2933 | * some port and we processed internally and dropped (e.g. STP). | |
4e090bc7 | 2934 | * Account for them as if they had been forwarded to OFPP_LOCAL. */ |
6527c598 PS |
2935 | |
2936 | if (stats->tx_packets != UINT64_MAX) { | |
2937 | stats->tx_packets += ofproto->stats.rx_packets; | |
2938 | } | |
2939 | ||
2940 | if (stats->tx_bytes != UINT64_MAX) { | |
2941 | stats->tx_bytes += ofproto->stats.rx_bytes; | |
2942 | } | |
2943 | } | |
2944 | ||
2945 | return error; | |
2946 | } | |
2947 | ||
2948 | /* Account packets for LOCAL port. */ | |
2949 | static void | |
2950 | ofproto_update_local_port_stats(const struct ofproto *ofproto_, | |
2951 | size_t tx_size, size_t rx_size) | |
2952 | { | |
2953 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
2954 | ||
2955 | if (rx_size) { | |
2956 | ofproto->stats.rx_packets++; | |
2957 | ofproto->stats.rx_bytes += rx_size; | |
2958 | } | |
2959 | if (tx_size) { | |
2960 | ofproto->stats.tx_packets++; | |
2961 | ofproto->stats.tx_bytes += tx_size; | |
2962 | } | |
2963 | } | |
2964 | ||
abe529af | 2965 | struct port_dump_state { |
acf60855 JP |
2966 | uint32_t bucket; |
2967 | uint32_t offset; | |
abe529af BP |
2968 | }; |
2969 | ||
2970 | static int | |
acf60855 | 2971 | port_dump_start(const struct ofproto *ofproto_ OVS_UNUSED, void **statep) |
abe529af | 2972 | { |
abe529af BP |
2973 | struct port_dump_state *state; |
2974 | ||
2975 | *statep = state = xmalloc(sizeof *state); | |
acf60855 JP |
2976 | state->bucket = 0; |
2977 | state->offset = 0; | |
abe529af BP |
2978 | return 0; |
2979 | } | |
2980 | ||
2981 | static int | |
2982 | port_dump_next(const struct ofproto *ofproto_ OVS_UNUSED, void *state_, | |
2983 | struct ofproto_port *port) | |
2984 | { | |
e1b1d06a | 2985 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); |
abe529af | 2986 | struct port_dump_state *state = state_; |
acf60855 | 2987 | struct sset_node *node; |
abe529af | 2988 | |
acf60855 JP |
2989 | while ((node = sset_at_position(&ofproto->ports, &state->bucket, |
2990 | &state->offset))) { | |
2991 | int error; | |
2992 | ||
2993 | error = port_query_by_name(ofproto_, node->name, port); | |
2994 | if (error != ENODEV) { | |
2995 | return error; | |
2996 | } | |
abe529af | 2997 | } |
acf60855 JP |
2998 | |
2999 | return EOF; | |
abe529af BP |
3000 | } |
3001 | ||
3002 | static int | |
3003 | port_dump_done(const struct ofproto *ofproto_ OVS_UNUSED, void *state_) | |
3004 | { | |
3005 | struct port_dump_state *state = state_; | |
3006 | ||
abe529af BP |
3007 | free(state); |
3008 | return 0; | |
3009 | } | |
3010 | ||
3011 | static int | |
3012 | port_poll(const struct ofproto *ofproto_, char **devnamep) | |
3013 | { | |
3014 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
acf60855 JP |
3015 | |
3016 | if (ofproto->port_poll_errno) { | |
3017 | int error = ofproto->port_poll_errno; | |
3018 | ofproto->port_poll_errno = 0; | |
3019 | return error; | |
3020 | } | |
3021 | ||
3022 | if (sset_is_empty(&ofproto->port_poll_set)) { | |
3023 | return EAGAIN; | |
3024 | } | |
3025 | ||
3026 | *devnamep = sset_pop(&ofproto->port_poll_set); | |
3027 | return 0; | |
abe529af BP |
3028 | } |
3029 | ||
3030 | static void | |
3031 | port_poll_wait(const struct ofproto *ofproto_) | |
3032 | { | |
3033 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
acf60855 | 3034 | dpif_port_poll_wait(ofproto->backer->dpif); |
abe529af BP |
3035 | } |
3036 | ||
3037 | static int | |
3038 | port_is_lacp_current(const struct ofport *ofport_) | |
3039 | { | |
3040 | const struct ofport_dpif *ofport = ofport_dpif_cast(ofport_); | |
3041 | return (ofport->bundle && ofport->bundle->lacp | |
3042 | ? lacp_slave_is_current(ofport->bundle->lacp, ofport) | |
3043 | : -1); | |
3044 | } | |
3045 | \f | |
3046 | /* Upcall handling. */ | |
3047 | ||
501f8d1f BP |
3048 | /* Flow miss batching. |
3049 | * | |
3050 | * Some dpifs implement operations faster when you hand them off in a batch. | |
3051 | * To allow batching, "struct flow_miss" queues the dpif-related work needed | |
3052 | * for a given flow. Each "struct flow_miss" corresponds to sending one or | |
3053 | * more packets, plus possibly installing the flow in the dpif. | |
3054 | * | |
3055 | * So far we only batch the operations that affect flow setup time the most. | |
3056 | * It's possible to batch more than that, but the benefit might be minimal. */ | |
3057 | struct flow_miss { | |
3058 | struct hmap_node hmap_node; | |
acf60855 | 3059 | struct ofproto_dpif *ofproto; |
501f8d1f | 3060 | struct flow flow; |
b0f7b9b5 | 3061 | enum odp_key_fitness key_fitness; |
501f8d1f BP |
3062 | const struct nlattr *key; |
3063 | size_t key_len; | |
e84173dc | 3064 | ovs_be16 initial_tci; |
501f8d1f | 3065 | struct list packets; |
6a7e895f | 3066 | enum dpif_upcall_type upcall_type; |
501f8d1f BP |
3067 | }; |
3068 | ||
3069 | struct flow_miss_op { | |
c2b565b5 | 3070 | struct dpif_op dpif_op; |
5fe20d5d BP |
3071 | struct subfacet *subfacet; /* Subfacet */ |
3072 | void *garbage; /* Pointer to pass to free(), NULL if none. */ | |
3073 | uint64_t stub[1024 / 8]; /* Temporary buffer. */ | |
501f8d1f BP |
3074 | }; |
3075 | ||
62cd7072 BP |
3076 | /* Sends an OFPT_PACKET_IN message for 'packet' of type OFPR_NO_MATCH to each |
3077 | * OpenFlow controller as necessary according to their individual | |
29ebe880 | 3078 | * configurations. */ |
62cd7072 | 3079 | static void |
a39edbd4 | 3080 | send_packet_in_miss(struct ofproto_dpif *ofproto, const struct ofpbuf *packet, |
29ebe880 | 3081 | const struct flow *flow) |
62cd7072 BP |
3082 | { |
3083 | struct ofputil_packet_in pin; | |
3084 | ||
3e3252fa EJ |
3085 | pin.packet = packet->data; |
3086 | pin.packet_len = packet->size; | |
62cd7072 | 3087 | pin.reason = OFPR_NO_MATCH; |
a7349929 | 3088 | pin.controller_id = 0; |
54834960 EJ |
3089 | |
3090 | pin.table_id = 0; | |
3091 | pin.cookie = 0; | |
3092 | ||
62cd7072 | 3093 | pin.send_len = 0; /* not used for flow table misses */ |
5d6c3af0 EJ |
3094 | |
3095 | flow_get_metadata(flow, &pin.fmd); | |
3096 | ||
d8653c38 | 3097 | connmgr_send_packet_in(ofproto->up.connmgr, &pin); |
62cd7072 BP |
3098 | } |
3099 | ||
6a7e895f | 3100 | static enum slow_path_reason |
abe529af BP |
3101 | process_special(struct ofproto_dpif *ofproto, const struct flow *flow, |
3102 | const struct ofpbuf *packet) | |
3103 | { | |
b6e001b6 EJ |
3104 | struct ofport_dpif *ofport = get_ofp_port(ofproto, flow->in_port); |
3105 | ||
3106 | if (!ofport) { | |
6a7e895f | 3107 | return 0; |
b6e001b6 EJ |
3108 | } |
3109 | ||
ef9819b5 | 3110 | if (ofport->cfm && cfm_should_process_flow(ofport->cfm, flow)) { |
b6e001b6 | 3111 | if (packet) { |
abe529af BP |
3112 | cfm_process_heartbeat(ofport->cfm, packet); |
3113 | } | |
6a7e895f | 3114 | return SLOW_CFM; |
b6e001b6 EJ |
3115 | } else if (ofport->bundle && ofport->bundle->lacp |
3116 | && flow->dl_type == htons(ETH_TYPE_LACP)) { | |
3117 | if (packet) { | |
3118 | lacp_process_packet(ofport->bundle->lacp, ofport, packet); | |
abe529af | 3119 | } |
6a7e895f | 3120 | return SLOW_LACP; |
21f7563c JP |
3121 | } else if (ofproto->stp && stp_should_process_flow(flow)) { |
3122 | if (packet) { | |
3123 | stp_process_packet(ofport, packet); | |
3124 | } | |
6a7e895f | 3125 | return SLOW_STP; |
abe529af | 3126 | } |
6a7e895f | 3127 | return 0; |
abe529af BP |
3128 | } |
3129 | ||
501f8d1f | 3130 | static struct flow_miss * |
b23cdad9 | 3131 | flow_miss_find(struct hmap *todo, const struct flow *flow, uint32_t hash) |
abe529af | 3132 | { |
501f8d1f | 3133 | struct flow_miss *miss; |
abe529af | 3134 | |
501f8d1f BP |
3135 | HMAP_FOR_EACH_WITH_HASH (miss, hmap_node, hash, todo) { |
3136 | if (flow_equal(&miss->flow, flow)) { | |
3137 | return miss; | |
3138 | } | |
3139 | } | |
abe529af | 3140 | |
b23cdad9 | 3141 | return NULL; |
501f8d1f | 3142 | } |
abe529af | 3143 | |
9d6ac44e BP |
3144 | /* Partially Initializes 'op' as an "execute" operation for 'miss' and |
3145 | * 'packet'. The caller must initialize op->actions and op->actions_len. If | |
3146 | * 'miss' is associated with a subfacet the caller must also initialize the | |
3147 | * returned op->subfacet, and if anything needs to be freed after processing | |
3148 | * the op, the caller must initialize op->garbage also. */ | |
501f8d1f | 3149 | static void |
9d6ac44e BP |
3150 | init_flow_miss_execute_op(struct flow_miss *miss, struct ofpbuf *packet, |
3151 | struct flow_miss_op *op) | |
501f8d1f | 3152 | { |
9d6ac44e BP |
3153 | if (miss->flow.vlan_tci != miss->initial_tci) { |
3154 | /* This packet was received on a VLAN splinter port. We | |
3155 | * added a VLAN to the packet to make the packet resemble | |
3156 | * the flow, but the actions were composed assuming that | |
3157 | * the packet contained no VLAN. So, we must remove the | |
3158 | * VLAN header from the packet before trying to execute the | |
3159 | * actions. */ | |
3160 | eth_pop_vlan(packet); | |
3161 | } | |
3162 | ||
3163 | op->subfacet = NULL; | |
3164 | op->garbage = NULL; | |
3165 | op->dpif_op.type = DPIF_OP_EXECUTE; | |
3166 | op->dpif_op.u.execute.key = miss->key; | |
3167 | op->dpif_op.u.execute.key_len = miss->key_len; | |
3168 | op->dpif_op.u.execute.packet = packet; | |
3169 | } | |
3170 | ||
3171 | /* Helper for handle_flow_miss_without_facet() and | |
3172 | * handle_flow_miss_with_facet(). */ | |
3173 | static void | |
3174 | handle_flow_miss_common(struct rule_dpif *rule, | |
3175 | struct ofpbuf *packet, const struct flow *flow) | |
3176 | { | |
3177 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto); | |
3178 | ||
3179 | ofproto->n_matches++; | |
3180 | ||
3181 | if (rule->up.cr.priority == FAIL_OPEN_PRIORITY) { | |
3182 | /* | |
3183 | * Extra-special case for fail-open mode. | |
3184 | * | |
3185 | * We are in fail-open mode and the packet matched the fail-open | |
3186 | * rule, but we are connected to a controller too. We should send | |
3187 | * the packet up to the controller in the hope that it will try to | |
3188 | * set up a flow and thereby allow us to exit fail-open. | |
3189 | * | |
3190 | * See the top-level comment in fail-open.c for more information. | |
3191 | */ | |
3192 | send_packet_in_miss(ofproto, packet, flow); | |
3193 | } | |
3194 | } | |
3195 | ||
3196 | /* Figures out whether a flow that missed in 'ofproto', whose details are in | |
3197 | * 'miss', is likely to be worth tracking in detail in userspace and (usually) | |
3198 | * installing a datapath flow. The answer is usually "yes" (a return value of | |
3199 | * true). However, for short flows the cost of bookkeeping is much higher than | |
3200 | * the benefits, so when the datapath holds a large number of flows we impose | |
3201 | * some heuristics to decide which flows are likely to be worth tracking. */ | |
3202 | static bool | |
3203 | flow_miss_should_make_facet(struct ofproto_dpif *ofproto, | |
3204 | struct flow_miss *miss, uint32_t hash) | |
3205 | { | |
3206 | if (!ofproto->governor) { | |
3207 | size_t n_subfacets; | |
3208 | ||
3209 | n_subfacets = hmap_count(&ofproto->subfacets); | |
3210 | if (n_subfacets * 2 <= ofproto->up.flow_eviction_threshold) { | |
3211 | return true; | |
3212 | } | |
3213 | ||
3214 | ofproto->governor = governor_create(ofproto->up.name); | |
3215 | } | |
3216 | ||
3217 | return governor_should_install_flow(ofproto->governor, hash, | |
3218 | list_size(&miss->packets)); | |
3219 | } | |
3220 | ||
3221 | /* Handles 'miss', which matches 'rule', without creating a facet or subfacet | |
3222 | * or creating any datapath flow. May add an "execute" operation to 'ops' and | |
3223 | * increment '*n_ops'. */ | |
3224 | static void | |
3225 | handle_flow_miss_without_facet(struct flow_miss *miss, | |
3226 | struct rule_dpif *rule, | |
3227 | struct flow_miss_op *ops, size_t *n_ops) | |
3228 | { | |
3229 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto); | |
a7752d4a | 3230 | long long int now = time_msec(); |
9d6ac44e | 3231 | struct action_xlate_ctx ctx; |
530a1d91 | 3232 | struct ofpbuf *packet; |
2b459b83 | 3233 | |
9d6ac44e BP |
3234 | LIST_FOR_EACH (packet, list_node, &miss->packets) { |
3235 | struct flow_miss_op *op = &ops[*n_ops]; | |
3236 | struct dpif_flow_stats stats; | |
3237 | struct ofpbuf odp_actions; | |
abe529af | 3238 | |
9d6ac44e | 3239 | COVERAGE_INC(facet_suppress); |
501f8d1f | 3240 | |
9d6ac44e | 3241 | ofpbuf_use_stub(&odp_actions, op->stub, sizeof op->stub); |
501f8d1f | 3242 | |
a7752d4a | 3243 | dpif_flow_stats_extract(&miss->flow, packet, now, &stats); |
9d6ac44e | 3244 | rule_credit_stats(rule, &stats); |
abe529af | 3245 | |
9d6ac44e BP |
3246 | action_xlate_ctx_init(&ctx, ofproto, &miss->flow, miss->initial_tci, |
3247 | rule, 0, packet); | |
3248 | ctx.resubmit_stats = &stats; | |
f25d0cf3 | 3249 | xlate_actions(&ctx, rule->up.ofpacts, rule->up.ofpacts_len, |
9d6ac44e | 3250 | &odp_actions); |
abe529af | 3251 | |
9d6ac44e BP |
3252 | if (odp_actions.size) { |
3253 | struct dpif_execute *execute = &op->dpif_op.u.execute; | |
3254 | ||
3255 | init_flow_miss_execute_op(miss, packet, op); | |
3256 | execute->actions = odp_actions.data; | |
3257 | execute->actions_len = odp_actions.size; | |
3258 | op->garbage = ofpbuf_get_uninit_pointer(&odp_actions); | |
3259 | ||
3260 | (*n_ops)++; | |
3261 | } else { | |
3262 | ofpbuf_uninit(&odp_actions); | |
3263 | } | |
abe529af | 3264 | } |
9d6ac44e BP |
3265 | } |
3266 | ||
3267 | /* Handles 'miss', which matches 'facet'. May add any required datapath | |
459b16a1 BP |
3268 | * operations to 'ops', incrementing '*n_ops' for each new op. |
3269 | * | |
3270 | * All of the packets in 'miss' are considered to have arrived at time 'now'. | |
3271 | * This is really important only for new facets: if we just called time_msec() | |
3272 | * here, then the new subfacet or its packets could look (occasionally) as | |
3273 | * though it was used some time after the facet was used. That can make a | |
3274 | * one-packet flow look like it has a nonzero duration, which looks odd in | |
3275 | * e.g. NetFlow statistics. */ | |
9d6ac44e BP |
3276 | static void |
3277 | handle_flow_miss_with_facet(struct flow_miss *miss, struct facet *facet, | |
459b16a1 | 3278 | long long int now, |
9d6ac44e BP |
3279 | struct flow_miss_op *ops, size_t *n_ops) |
3280 | { | |
6a7e895f BP |
3281 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto); |
3282 | enum subfacet_path want_path; | |
9d6ac44e BP |
3283 | struct subfacet *subfacet; |
3284 | struct ofpbuf *packet; | |
abe529af | 3285 | |
15baa734 | 3286 | subfacet = subfacet_create(facet, |
e84173dc | 3287 | miss->key_fitness, miss->key, miss->key_len, |
459b16a1 | 3288 | miss->initial_tci, now); |
b0f7b9b5 | 3289 | |
530a1d91 | 3290 | LIST_FOR_EACH (packet, list_node, &miss->packets) { |
5fe20d5d | 3291 | struct flow_miss_op *op = &ops[*n_ops]; |
67d91f78 | 3292 | struct dpif_flow_stats stats; |
5fe20d5d | 3293 | struct ofpbuf odp_actions; |
67d91f78 | 3294 | |
9d6ac44e | 3295 | handle_flow_miss_common(facet->rule, packet, &miss->flow); |
501f8d1f | 3296 | |
5fe20d5d | 3297 | ofpbuf_use_stub(&odp_actions, op->stub, sizeof op->stub); |
6a7e895f | 3298 | if (!subfacet->actions || subfacet->slow) { |
5fe20d5d | 3299 | subfacet_make_actions(subfacet, packet, &odp_actions); |
501f8d1f | 3300 | } |
67d91f78 | 3301 | |
459b16a1 | 3302 | dpif_flow_stats_extract(&facet->flow, packet, now, &stats); |
15baa734 | 3303 | subfacet_update_stats(subfacet, &stats); |
67d91f78 | 3304 | |
9d6ac44e BP |
3305 | if (subfacet->actions_len) { |
3306 | struct dpif_execute *execute = &op->dpif_op.u.execute; | |
8338659a | 3307 | |
9d6ac44e BP |
3308 | init_flow_miss_execute_op(miss, packet, op); |
3309 | op->subfacet = subfacet; | |
6a7e895f | 3310 | if (!subfacet->slow) { |
9d6ac44e BP |
3311 | execute->actions = subfacet->actions; |
3312 | execute->actions_len = subfacet->actions_len; | |
3313 | ofpbuf_uninit(&odp_actions); | |
3314 | } else { | |
3315 | execute->actions = odp_actions.data; | |
3316 | execute->actions_len = odp_actions.size; | |
3317 | op->garbage = ofpbuf_get_uninit_pointer(&odp_actions); | |
3318 | } | |
999fba59 | 3319 | |
9d6ac44e | 3320 | (*n_ops)++; |
5fe20d5d | 3321 | } else { |
9d6ac44e | 3322 | ofpbuf_uninit(&odp_actions); |
5fe20d5d | 3323 | } |
501f8d1f BP |
3324 | } |
3325 | ||
6a7e895f BP |
3326 | want_path = subfacet_want_path(subfacet->slow); |
3327 | if (miss->upcall_type == DPIF_UC_MISS || subfacet->path != want_path) { | |
501f8d1f | 3328 | struct flow_miss_op *op = &ops[(*n_ops)++]; |
c2b565b5 | 3329 | struct dpif_flow_put *put = &op->dpif_op.u.flow_put; |
501f8d1f | 3330 | |
b0f7b9b5 | 3331 | op->subfacet = subfacet; |
5fe20d5d | 3332 | op->garbage = NULL; |
c2b565b5 | 3333 | op->dpif_op.type = DPIF_OP_FLOW_PUT; |
501f8d1f BP |
3334 | put->flags = DPIF_FP_CREATE | DPIF_FP_MODIFY; |
3335 | put->key = miss->key; | |
3336 | put->key_len = miss->key_len; | |
6a7e895f BP |
3337 | if (want_path == SF_FAST_PATH) { |
3338 | put->actions = subfacet->actions; | |
3339 | put->actions_len = subfacet->actions_len; | |
3340 | } else { | |
3341 | compose_slow_path(ofproto, &facet->flow, subfacet->slow, | |
3342 | op->stub, sizeof op->stub, | |
3343 | &put->actions, &put->actions_len); | |
3344 | } | |
501f8d1f BP |
3345 | put->stats = NULL; |
3346 | } | |
3347 | } | |
3348 | ||
acf60855 JP |
3349 | /* Handles flow miss 'miss'. May add any required datapath operations |
3350 | * to 'ops', incrementing '*n_ops' for each new op. */ | |
9d6ac44e | 3351 | static void |
acf60855 JP |
3352 | handle_flow_miss(struct flow_miss *miss, struct flow_miss_op *ops, |
3353 | size_t *n_ops) | |
9d6ac44e | 3354 | { |
acf60855 | 3355 | struct ofproto_dpif *ofproto = miss->ofproto; |
9d6ac44e | 3356 | struct facet *facet; |
459b16a1 | 3357 | long long int now; |
9d6ac44e BP |
3358 | uint32_t hash; |
3359 | ||
3360 | /* The caller must ensure that miss->hmap_node.hash contains | |
3361 | * flow_hash(miss->flow, 0). */ | |
3362 | hash = miss->hmap_node.hash; | |
3363 | ||
3364 | facet = facet_lookup_valid(ofproto, &miss->flow, hash); | |
3365 | if (!facet) { | |
c57b2226 BP |
3366 | struct rule_dpif *rule = rule_dpif_lookup(ofproto, &miss->flow); |
3367 | ||
3368 | if (!flow_miss_should_make_facet(ofproto, miss, hash)) { | |
9d6ac44e BP |
3369 | handle_flow_miss_without_facet(miss, rule, ops, n_ops); |
3370 | return; | |
3371 | } | |
3372 | ||
3373 | facet = facet_create(rule, &miss->flow, hash); | |
459b16a1 BP |
3374 | now = facet->used; |
3375 | } else { | |
3376 | now = time_msec(); | |
9d6ac44e | 3377 | } |
459b16a1 | 3378 | handle_flow_miss_with_facet(miss, facet, now, ops, n_ops); |
9d6ac44e BP |
3379 | } |
3380 | ||
acf60855 JP |
3381 | /* This function does post-processing on data returned from |
3382 | * odp_flow_key_to_flow() to help make VLAN splinters transparent to the | |
3383 | * rest of the upcall processing logic. In particular, if the extracted | |
3384 | * in_port is a VLAN splinter port, it replaces flow->in_port by the "real" | |
3385 | * port, sets flow->vlan_tci correctly for the VLAN of the VLAN splinter | |
3386 | * port, and pushes a VLAN header onto 'packet' (if it is nonnull). The | |
3387 | * caller must have called odp_flow_key_to_flow() and supply 'fitness' and | |
3388 | * 'flow' from its output. The 'flow' argument must have had the "in_port" | |
3389 | * member converted to the OpenFlow number. | |
e2a6ca36 BP |
3390 | * |
3391 | * Sets '*initial_tci' to the VLAN TCI with which the packet was really | |
3392 | * received, that is, the actual VLAN TCI extracted by odp_flow_key_to_flow(). | |
3393 | * (This differs from the value returned in flow->vlan_tci only for packets | |
acf60855 | 3394 | * received on VLAN splinters.) */ |
e84173dc | 3395 | static enum odp_key_fitness |
acf60855 JP |
3396 | ofproto_dpif_vsp_adjust(const struct ofproto_dpif *ofproto, |
3397 | enum odp_key_fitness fitness, | |
3398 | struct flow *flow, ovs_be16 *initial_tci, | |
3399 | struct ofpbuf *packet) | |
e84173dc | 3400 | { |
e84173dc BP |
3401 | if (fitness == ODP_FIT_ERROR) { |
3402 | return fitness; | |
3403 | } | |
3404 | *initial_tci = flow->vlan_tci; | |
3405 | ||
b98d8985 | 3406 | if (vsp_adjust_flow(ofproto, flow)) { |
e2a6ca36 BP |
3407 | if (packet) { |
3408 | /* Make the packet resemble the flow, so that it gets sent to an | |
3409 | * OpenFlow controller properly, so that it looks correct for | |
3410 | * sFlow, and so that flow_extract() will get the correct vlan_tci | |
3411 | * if it is called on 'packet'. | |
3412 | * | |
3413 | * The allocated space inside 'packet' probably also contains | |
3414 | * 'key', that is, both 'packet' and 'key' are probably part of a | |
3415 | * struct dpif_upcall (see the large comment on that structure | |
3416 | * definition), so pushing data on 'packet' is in general not a | |
3417 | * good idea since it could overwrite 'key' or free it as a side | |
3418 | * effect. However, it's OK in this special case because we know | |
3419 | * that 'packet' is inside a Netlink attribute: pushing 4 bytes | |
3420 | * will just overwrite the 4-byte "struct nlattr", which is fine | |
3421 | * since we don't need that header anymore. */ | |
3422 | eth_push_vlan(packet, flow->vlan_tci); | |
3423 | } | |
52a90c29 BP |
3424 | |
3425 | /* Let the caller know that we can't reproduce 'key' from 'flow'. */ | |
3426 | if (fitness == ODP_FIT_PERFECT) { | |
3427 | fitness = ODP_FIT_TOO_MUCH; | |
3428 | } | |
3429 | } | |
3430 | ||
e84173dc BP |
3431 | return fitness; |
3432 | } | |
3433 | ||
501f8d1f | 3434 | static void |
acf60855 | 3435 | handle_miss_upcalls(struct dpif_backer *backer, struct dpif_upcall *upcalls, |
501f8d1f BP |
3436 | size_t n_upcalls) |
3437 | { | |
3438 | struct dpif_upcall *upcall; | |
b23cdad9 BP |
3439 | struct flow_miss *miss; |
3440 | struct flow_miss misses[FLOW_MISS_MAX_BATCH]; | |
501f8d1f | 3441 | struct flow_miss_op flow_miss_ops[FLOW_MISS_MAX_BATCH * 2]; |
c2b565b5 | 3442 | struct dpif_op *dpif_ops[FLOW_MISS_MAX_BATCH * 2]; |
501f8d1f | 3443 | struct hmap todo; |
b23cdad9 | 3444 | int n_misses; |
501f8d1f BP |
3445 | size_t n_ops; |
3446 | size_t i; | |
3447 | ||
3448 | if (!n_upcalls) { | |
3449 | return; | |
3450 | } | |
3451 | ||
3452 | /* Construct the to-do list. | |
3453 | * | |
3454 | * This just amounts to extracting the flow from each packet and sticking | |
3455 | * the packets that have the same flow in the same "flow_miss" structure so | |
3456 | * that we can process them together. */ | |
3457 | hmap_init(&todo); | |
b23cdad9 | 3458 | n_misses = 0; |
501f8d1f | 3459 | for (upcall = upcalls; upcall < &upcalls[n_upcalls]; upcall++) { |
b23cdad9 BP |
3460 | struct flow_miss *miss = &misses[n_misses]; |
3461 | struct flow_miss *existing_miss; | |
acf60855 JP |
3462 | enum odp_key_fitness fitness; |
3463 | struct ofproto_dpif *ofproto; | |
3464 | struct ofport_dpif *port; | |
1d446463 | 3465 | struct flow flow; |
b23cdad9 | 3466 | uint32_t hash; |
501f8d1f | 3467 | |
acf60855 JP |
3468 | fitness = odp_flow_key_to_flow(upcall->key, upcall->key_len, &flow); |
3469 | port = odp_port_to_ofport(backer, flow.in_port); | |
3470 | if (!port) { | |
3471 | /* Received packet on port for which we couldn't associate | |
3472 | * an ofproto. This can happen if a port is removed while | |
3473 | * traffic is being received. Print a rate-limited message | |
3474 | * in case it happens frequently. */ | |
3475 | VLOG_INFO_RL(&rl, "received packet on unassociated port %"PRIu32, | |
3476 | flow.in_port); | |
3477 | continue; | |
3478 | } | |
3479 | ofproto = ofproto_dpif_cast(port->up.ofproto); | |
3480 | flow.in_port = port->up.ofp_port; | |
3481 | ||
b0f7b9b5 BP |
3482 | /* Obtain metadata and check userspace/kernel agreement on flow match, |
3483 | * then set 'flow''s header pointers. */ | |
acf60855 JP |
3484 | miss->key_fitness = ofproto_dpif_vsp_adjust(ofproto, fitness, |
3485 | &flow, &miss->initial_tci, upcall->packet); | |
b23cdad9 | 3486 | if (miss->key_fitness == ODP_FIT_ERROR) { |
b0f7b9b5 BP |
3487 | continue; |
3488 | } | |
1d446463 BP |
3489 | flow_extract(upcall->packet, flow.skb_priority, |
3490 | &flow.tunnel, flow.in_port, &miss->flow); | |
501f8d1f | 3491 | |
501f8d1f | 3492 | /* Add other packets to a to-do list. */ |
b23cdad9 BP |
3493 | hash = flow_hash(&miss->flow, 0); |
3494 | existing_miss = flow_miss_find(&todo, &miss->flow, hash); | |
3495 | if (!existing_miss) { | |
3496 | hmap_insert(&todo, &miss->hmap_node, hash); | |
acf60855 | 3497 | miss->ofproto = ofproto; |
b23cdad9 BP |
3498 | miss->key = upcall->key; |
3499 | miss->key_len = upcall->key_len; | |
6a7e895f | 3500 | miss->upcall_type = upcall->type; |
b23cdad9 BP |
3501 | list_init(&miss->packets); |
3502 | ||
3503 | n_misses++; | |
3504 | } else { | |
3505 | miss = existing_miss; | |
3506 | } | |
501f8d1f BP |
3507 | list_push_back(&miss->packets, &upcall->packet->list_node); |
3508 | } | |
3509 | ||
3510 | /* Process each element in the to-do list, constructing the set of | |
3511 | * operations to batch. */ | |
3512 | n_ops = 0; | |
33bb0caa | 3513 | HMAP_FOR_EACH (miss, hmap_node, &todo) { |
acf60855 | 3514 | handle_flow_miss(miss, flow_miss_ops, &n_ops); |
abe529af | 3515 | } |
501f8d1f | 3516 | assert(n_ops <= ARRAY_SIZE(flow_miss_ops)); |
501f8d1f BP |
3517 | |
3518 | /* Execute batch. */ | |
3519 | for (i = 0; i < n_ops; i++) { | |
3520 | dpif_ops[i] = &flow_miss_ops[i].dpif_op; | |
3521 | } | |
acf60855 | 3522 | dpif_operate(backer->dpif, dpif_ops, n_ops); |
501f8d1f BP |
3523 | |
3524 | /* Free memory and update facets. */ | |
3525 | for (i = 0; i < n_ops; i++) { | |
3526 | struct flow_miss_op *op = &flow_miss_ops[i]; | |
501f8d1f BP |
3527 | |
3528 | switch (op->dpif_op.type) { | |
3529 | case DPIF_OP_EXECUTE: | |
501f8d1f | 3530 | break; |
abe529af | 3531 | |
501f8d1f | 3532 | case DPIF_OP_FLOW_PUT: |
c2b565b5 | 3533 | if (!op->dpif_op.error) { |
6a7e895f | 3534 | op->subfacet->path = subfacet_want_path(op->subfacet->slow); |
501f8d1f BP |
3535 | } |
3536 | break; | |
b99d3cee BP |
3537 | |
3538 | case DPIF_OP_FLOW_DEL: | |
3539 | NOT_REACHED(); | |
501f8d1f | 3540 | } |
5fe20d5d BP |
3541 | |
3542 | free(op->garbage); | |
501f8d1f | 3543 | } |
33bb0caa | 3544 | hmap_destroy(&todo); |
abe529af BP |
3545 | } |
3546 | ||
6a7e895f BP |
3547 | static enum { SFLOW_UPCALL, MISS_UPCALL, BAD_UPCALL } |
3548 | classify_upcall(const struct dpif_upcall *upcall) | |
3549 | { | |
3550 | union user_action_cookie cookie; | |
3551 | ||
3552 | /* First look at the upcall type. */ | |
3553 | switch (upcall->type) { | |
3554 | case DPIF_UC_ACTION: | |
3555 | break; | |
3556 | ||
3557 | case DPIF_UC_MISS: | |
3558 | return MISS_UPCALL; | |
3559 | ||
3560 | case DPIF_N_UC_TYPES: | |
3561 | default: | |
3562 | VLOG_WARN_RL(&rl, "upcall has unexpected type %"PRIu32, upcall->type); | |
3563 | return BAD_UPCALL; | |
3564 | } | |
3565 | ||
3566 | /* "action" upcalls need a closer look. */ | |
3567 | memcpy(&cookie, &upcall->userdata, sizeof(cookie)); | |
3568 | switch (cookie.type) { | |
3569 | case USER_ACTION_COOKIE_SFLOW: | |
3570 | return SFLOW_UPCALL; | |
3571 | ||
3572 | case USER_ACTION_COOKIE_SLOW_PATH: | |
3573 | return MISS_UPCALL; | |
3574 | ||
3575 | case USER_ACTION_COOKIE_UNSPEC: | |
3576 | default: | |
3577 | VLOG_WARN_RL(&rl, "invalid user cookie : 0x%"PRIx64, upcall->userdata); | |
3578 | return BAD_UPCALL; | |
3579 | } | |
3580 | } | |
3581 | ||
abe529af | 3582 | static void |
acf60855 | 3583 | handle_sflow_upcall(struct dpif_backer *backer, |
6a7e895f | 3584 | const struct dpif_upcall *upcall) |
abe529af | 3585 | { |
acf60855 | 3586 | struct ofproto_dpif *ofproto; |
1673e0e4 | 3587 | union user_action_cookie cookie; |
e84173dc | 3588 | enum odp_key_fitness fitness; |
acf60855 | 3589 | struct ofport_dpif *port; |
e84173dc BP |
3590 | ovs_be16 initial_tci; |
3591 | struct flow flow; | |
e1b1d06a | 3592 | uint32_t odp_in_port; |
abe529af | 3593 | |
acf60855 JP |
3594 | fitness = odp_flow_key_to_flow(upcall->key, upcall->key_len, &flow); |
3595 | ||
3596 | port = odp_port_to_ofport(backer, flow.in_port); | |
3597 | if (!port) { | |
3598 | return; | |
3599 | } | |
3600 | ||
3601 | ofproto = ofproto_dpif_cast(port->up.ofproto); | |
3602 | if (!ofproto->sflow) { | |
3603 | return; | |
3604 | } | |
3605 | ||
3606 | odp_in_port = flow.in_port; | |
3607 | flow.in_port = port->up.ofp_port; | |
3608 | fitness = ofproto_dpif_vsp_adjust(ofproto, fitness, &flow, | |
3609 | &initial_tci, upcall->packet); | |
e84173dc BP |
3610 | if (fitness == ODP_FIT_ERROR) { |
3611 | return; | |
3612 | } | |
3613 | ||
6a7e895f | 3614 | memcpy(&cookie, &upcall->userdata, sizeof(cookie)); |
e1b1d06a JP |
3615 | dpif_sflow_received(ofproto->sflow, upcall->packet, &flow, |
3616 | odp_in_port, &cookie); | |
6ff686f2 PS |
3617 | } |
3618 | ||
9b16c439 | 3619 | static int |
acf60855 | 3620 | handle_upcalls(struct dpif_backer *backer, unsigned int max_batch) |
6ff686f2 | 3621 | { |
9b16c439 | 3622 | struct dpif_upcall misses[FLOW_MISS_MAX_BATCH]; |
90a7c55e BP |
3623 | struct ofpbuf miss_bufs[FLOW_MISS_MAX_BATCH]; |
3624 | uint64_t miss_buf_stubs[FLOW_MISS_MAX_BATCH][4096 / 8]; | |
3625 | int n_processed; | |
9b16c439 BP |
3626 | int n_misses; |
3627 | int i; | |
abe529af | 3628 | |
90a7c55e | 3629 | assert(max_batch <= FLOW_MISS_MAX_BATCH); |
abe529af | 3630 | |
9b16c439 | 3631 | n_misses = 0; |
90a7c55e | 3632 | for (n_processed = 0; n_processed < max_batch; n_processed++) { |
9b16c439 | 3633 | struct dpif_upcall *upcall = &misses[n_misses]; |
90a7c55e | 3634 | struct ofpbuf *buf = &miss_bufs[n_misses]; |
9b16c439 BP |
3635 | int error; |
3636 | ||
90a7c55e BP |
3637 | ofpbuf_use_stub(buf, miss_buf_stubs[n_misses], |
3638 | sizeof miss_buf_stubs[n_misses]); | |
acf60855 | 3639 | error = dpif_recv(backer->dpif, upcall, buf); |
9b16c439 | 3640 | if (error) { |
90a7c55e | 3641 | ofpbuf_uninit(buf); |
9b16c439 BP |
3642 | break; |
3643 | } | |
3644 | ||
6a7e895f BP |
3645 | switch (classify_upcall(upcall)) { |
3646 | case MISS_UPCALL: | |
9b16c439 BP |
3647 | /* Handle it later. */ |
3648 | n_misses++; | |
3649 | break; | |
3650 | ||
6a7e895f | 3651 | case SFLOW_UPCALL: |
acf60855 | 3652 | handle_sflow_upcall(backer, upcall); |
6a7e895f BP |
3653 | ofpbuf_uninit(buf); |
3654 | break; | |
3655 | ||
3656 | case BAD_UPCALL: | |
3657 | ofpbuf_uninit(buf); | |
9b16c439 BP |
3658 | break; |
3659 | } | |
abe529af | 3660 | } |
9b16c439 | 3661 | |
6a7e895f | 3662 | /* Handle deferred MISS_UPCALL processing. */ |
acf60855 | 3663 | handle_miss_upcalls(backer, misses, n_misses); |
90a7c55e BP |
3664 | for (i = 0; i < n_misses; i++) { |
3665 | ofpbuf_uninit(&miss_bufs[i]); | |
3666 | } | |
9b16c439 | 3667 | |
90a7c55e | 3668 | return n_processed; |
abe529af BP |
3669 | } |
3670 | \f | |
3671 | /* Flow expiration. */ | |
3672 | ||
b0f7b9b5 | 3673 | static int subfacet_max_idle(const struct ofproto_dpif *); |
acf60855 | 3674 | static void update_stats(struct dpif_backer *); |
abe529af | 3675 | static void rule_expire(struct rule_dpif *); |
b0f7b9b5 | 3676 | static void expire_subfacets(struct ofproto_dpif *, int dp_max_idle); |
abe529af BP |
3677 | |
3678 | /* This function is called periodically by run(). Its job is to collect | |
3679 | * updates for the flows that have been installed into the datapath, most | |
3680 | * importantly when they last were used, and then use that information to | |
3681 | * expire flows that have not been used recently. | |
3682 | * | |
3683 | * Returns the number of milliseconds after which it should be called again. */ | |
3684 | static int | |
acf60855 | 3685 | expire(struct dpif_backer *backer) |
abe529af | 3686 | { |
acf60855 JP |
3687 | struct ofproto_dpif *ofproto; |
3688 | int max_idle = INT32_MAX; | |
abe529af | 3689 | |
acf60855 JP |
3690 | /* Update stats for each flow in the backer. */ |
3691 | update_stats(backer); | |
abe529af | 3692 | |
acf60855 JP |
3693 | HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) { |
3694 | struct rule_dpif *rule, *next_rule; | |
3695 | struct oftable *table; | |
3696 | int dp_max_idle; | |
abe529af | 3697 | |
acf60855 JP |
3698 | if (ofproto->backer != backer) { |
3699 | continue; | |
3700 | } | |
0697b5c3 | 3701 | |
acf60855 JP |
3702 | /* Expire subfacets that have been idle too long. */ |
3703 | dp_max_idle = subfacet_max_idle(ofproto); | |
3704 | expire_subfacets(ofproto, dp_max_idle); | |
3705 | ||
3706 | max_idle = MIN(max_idle, dp_max_idle); | |
3707 | ||
3708 | /* Expire OpenFlow flows whose idle_timeout or hard_timeout | |
3709 | * has passed. */ | |
3710 | OFPROTO_FOR_EACH_TABLE (table, &ofproto->up) { | |
3711 | struct cls_cursor cursor; | |
3712 | ||
3713 | cls_cursor_init(&cursor, &table->cls, NULL); | |
3714 | CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, up.cr, &cursor) { | |
3715 | rule_expire(rule); | |
3716 | } | |
0697b5c3 | 3717 | } |
abe529af | 3718 | |
acf60855 JP |
3719 | /* All outstanding data in existing flows has been accounted, so it's a |
3720 | * good time to do bond rebalancing. */ | |
3721 | if (ofproto->has_bonded_bundles) { | |
3722 | struct ofbundle *bundle; | |
abe529af | 3723 | |
acf60855 JP |
3724 | HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) { |
3725 | if (bundle->bond) { | |
3726 | bond_rebalance(bundle->bond, &ofproto->revalidate_set); | |
3727 | } | |
abe529af BP |
3728 | } |
3729 | } | |
3730 | } | |
3731 | ||
acf60855 | 3732 | return MIN(max_idle, 1000); |
abe529af BP |
3733 | } |
3734 | ||
a218c879 BP |
3735 | /* Updates flow table statistics given that the datapath just reported 'stats' |
3736 | * as 'subfacet''s statistics. */ | |
3737 | static void | |
3738 | update_subfacet_stats(struct subfacet *subfacet, | |
3739 | const struct dpif_flow_stats *stats) | |
3740 | { | |
3741 | struct facet *facet = subfacet->facet; | |
3742 | ||
3743 | if (stats->n_packets >= subfacet->dp_packet_count) { | |
3744 | uint64_t extra = stats->n_packets - subfacet->dp_packet_count; | |
3745 | facet->packet_count += extra; | |
3746 | } else { | |
3747 | VLOG_WARN_RL(&rl, "unexpected packet count from the datapath"); | |
3748 | } | |
3749 | ||
3750 | if (stats->n_bytes >= subfacet->dp_byte_count) { | |
3751 | facet->byte_count += stats->n_bytes - subfacet->dp_byte_count; | |
3752 | } else { | |
3753 | VLOG_WARN_RL(&rl, "unexpected byte count from datapath"); | |
3754 | } | |
3755 | ||
3756 | subfacet->dp_packet_count = stats->n_packets; | |
3757 | subfacet->dp_byte_count = stats->n_bytes; | |
3758 | ||
3759 | facet->tcp_flags |= stats->tcp_flags; | |
3760 | ||
3761 | subfacet_update_time(subfacet, stats->used); | |
3762 | if (facet->accounted_bytes < facet->byte_count) { | |
3763 | facet_learn(facet); | |
3764 | facet_account(facet); | |
3765 | facet->accounted_bytes = facet->byte_count; | |
3766 | } | |
3767 | facet_push_stats(facet); | |
3768 | } | |
3769 | ||
3770 | /* 'key' with length 'key_len' bytes is a flow in 'dpif' that we know nothing | |
3771 | * about, or a flow that shouldn't be installed but was anyway. Delete it. */ | |
3772 | static void | |
acf60855 | 3773 | delete_unexpected_flow(struct ofproto_dpif *ofproto, |
a218c879 BP |
3774 | const struct nlattr *key, size_t key_len) |
3775 | { | |
3776 | if (!VLOG_DROP_WARN(&rl)) { | |
3777 | struct ds s; | |
3778 | ||
3779 | ds_init(&s); | |
3780 | odp_flow_key_format(key, key_len, &s); | |
acf60855 | 3781 | VLOG_WARN("unexpected flow on %s: %s", ofproto->up.name, ds_cstr(&s)); |
a218c879 BP |
3782 | ds_destroy(&s); |
3783 | } | |
3784 | ||
3785 | COVERAGE_INC(facet_unexpected); | |
acf60855 | 3786 | dpif_flow_del(ofproto->backer->dpif, key, key_len, NULL); |
a218c879 BP |
3787 | } |
3788 | ||
abe529af BP |
3789 | /* Update 'packet_count', 'byte_count', and 'used' members of installed facets. |
3790 | * | |
3791 | * This function also pushes statistics updates to rules which each facet | |
3792 | * resubmits into. Generally these statistics will be accurate. However, if a | |
3793 | * facet changes the rule it resubmits into at some time in between | |
3794 | * update_stats() runs, it is possible that statistics accrued to the | |
3795 | * old rule will be incorrectly attributed to the new rule. This could be | |
3796 | * avoided by calling update_stats() whenever rules are created or | |
3797 | * deleted. However, the performance impact of making so many calls to the | |
3798 | * datapath do not justify the benefit of having perfectly accurate statistics. | |
3799 | */ | |
3800 | static void | |
acf60855 | 3801 | update_stats(struct dpif_backer *backer) |
abe529af BP |
3802 | { |
3803 | const struct dpif_flow_stats *stats; | |
3804 | struct dpif_flow_dump dump; | |
3805 | const struct nlattr *key; | |
3806 | size_t key_len; | |
3807 | ||
acf60855 | 3808 | dpif_flow_dump_start(&dump, backer->dpif); |
abe529af | 3809 | while (dpif_flow_dump_next(&dump, &key, &key_len, NULL, NULL, &stats)) { |
acf60855 | 3810 | struct flow flow; |
b0f7b9b5 | 3811 | struct subfacet *subfacet; |
acf60855 JP |
3812 | enum odp_key_fitness fitness; |
3813 | struct ofproto_dpif *ofproto; | |
3814 | struct ofport_dpif *port; | |
3815 | uint32_t key_hash; | |
abe529af | 3816 | |
acf60855 JP |
3817 | fitness = odp_flow_key_to_flow(key, key_len, &flow); |
3818 | if (fitness == ODP_FIT_ERROR) { | |
3819 | continue; | |
3820 | } | |
3821 | ||
3822 | port = odp_port_to_ofport(backer, flow.in_port); | |
3823 | if (!port) { | |
3824 | /* This flow is for a port for which we couldn't associate an | |
3825 | * ofproto. This can happen if a port is removed while | |
3826 | * traffic is being received. Print a rate-limited message | |
3827 | * in case it happens frequently. */ | |
3828 | VLOG_INFO_RL(&rl, | |
3829 | "stats update for flow with unassociated port %"PRIu32, | |
3830 | flow.in_port); | |
3831 | continue; | |
3832 | } | |
3833 | ||
3834 | ofproto = ofproto_dpif_cast(port->up.ofproto); | |
3835 | flow.in_port = port->up.ofp_port; | |
3836 | key_hash = odp_flow_key_hash(key, key_len); | |
3837 | ||
3838 | subfacet = subfacet_find(ofproto, key, key_len, key_hash, &flow); | |
6a7e895f BP |
3839 | switch (subfacet ? subfacet->path : SF_NOT_INSTALLED) { |
3840 | case SF_FAST_PATH: | |
a218c879 | 3841 | update_subfacet_stats(subfacet, stats); |
6a7e895f BP |
3842 | break; |
3843 | ||
3844 | case SF_SLOW_PATH: | |
3845 | /* Stats are updated per-packet. */ | |
3846 | break; | |
3847 | ||
3848 | case SF_NOT_INSTALLED: | |
3849 | default: | |
acf60855 | 3850 | delete_unexpected_flow(ofproto, key, key_len); |
6a7e895f | 3851 | break; |
abe529af BP |
3852 | } |
3853 | } | |
3854 | dpif_flow_dump_done(&dump); | |
3855 | } | |
3856 | ||
3857 | /* Calculates and returns the number of milliseconds of idle time after which | |
b0f7b9b5 BP |
3858 | * subfacets should expire from the datapath. When a subfacet expires, we fold |
3859 | * its statistics into its facet, and when a facet's last subfacet expires, we | |
3860 | * fold its statistic into its rule. */ | |
abe529af | 3861 | static int |
b0f7b9b5 | 3862 | subfacet_max_idle(const struct ofproto_dpif *ofproto) |
abe529af BP |
3863 | { |
3864 | /* | |
3865 | * Idle time histogram. | |
3866 | * | |
b0f7b9b5 BP |
3867 | * Most of the time a switch has a relatively small number of subfacets. |
3868 | * When this is the case we might as well keep statistics for all of them | |
3869 | * in userspace and to cache them in the kernel datapath for performance as | |
abe529af BP |
3870 | * well. |
3871 | * | |
b0f7b9b5 | 3872 | * As the number of subfacets increases, the memory required to maintain |
abe529af | 3873 | * statistics about them in userspace and in the kernel becomes |
b0f7b9b5 BP |
3874 | * significant. However, with a large number of subfacets it is likely |
3875 | * that only a few of them are "heavy hitters" that consume a large amount | |
3876 | * of bandwidth. At this point, only heavy hitters are worth caching in | |
3877 | * the kernel and maintaining in userspaces; other subfacets we can | |
3878 | * discard. | |
abe529af BP |
3879 | * |
3880 | * The technique used to compute the idle time is to build a histogram with | |
b0f7b9b5 | 3881 | * N_BUCKETS buckets whose width is BUCKET_WIDTH msecs each. Each subfacet |
abe529af BP |
3882 | * that is installed in the kernel gets dropped in the appropriate bucket. |
3883 | * After the histogram has been built, we compute the cutoff so that only | |
b0f7b9b5 | 3884 | * the most-recently-used 1% of subfacets (but at least |
084f5290 | 3885 | * ofproto->up.flow_eviction_threshold flows) are kept cached. At least |
b0f7b9b5 BP |
3886 | * the most-recently-used bucket of subfacets is kept, so actually an |
3887 | * arbitrary number of subfacets can be kept in any given expiration run | |
084f5290 SH |
3888 | * (though the next run will delete most of those unless they receive |
3889 | * additional data). | |
abe529af | 3890 | * |
b0f7b9b5 BP |
3891 | * This requires a second pass through the subfacets, in addition to the |
3892 | * pass made by update_stats(), because the former function never looks at | |
3893 | * uninstallable subfacets. | |
abe529af BP |
3894 | */ |
3895 | enum { BUCKET_WIDTH = ROUND_UP(100, TIME_UPDATE_INTERVAL) }; | |
3896 | enum { N_BUCKETS = 5000 / BUCKET_WIDTH }; | |
3897 | int buckets[N_BUCKETS] = { 0 }; | |
f11c1ef4 | 3898 | int total, subtotal, bucket; |
b0f7b9b5 | 3899 | struct subfacet *subfacet; |
abe529af BP |
3900 | long long int now; |
3901 | int i; | |
3902 | ||
b0f7b9b5 | 3903 | total = hmap_count(&ofproto->subfacets); |
084f5290 | 3904 | if (total <= ofproto->up.flow_eviction_threshold) { |
abe529af BP |
3905 | return N_BUCKETS * BUCKET_WIDTH; |
3906 | } | |
3907 | ||
3908 | /* Build histogram. */ | |
3909 | now = time_msec(); | |
b0f7b9b5 BP |
3910 | HMAP_FOR_EACH (subfacet, hmap_node, &ofproto->subfacets) { |
3911 | long long int idle = now - subfacet->used; | |
abe529af BP |
3912 | int bucket = (idle <= 0 ? 0 |
3913 | : idle >= BUCKET_WIDTH * N_BUCKETS ? N_BUCKETS - 1 | |
3914 | : (unsigned int) idle / BUCKET_WIDTH); | |
3915 | buckets[bucket]++; | |
3916 | } | |
3917 | ||
3918 | /* Find the first bucket whose flows should be expired. */ | |
f11c1ef4 SH |
3919 | subtotal = bucket = 0; |
3920 | do { | |
3921 | subtotal += buckets[bucket++]; | |
084f5290 SH |
3922 | } while (bucket < N_BUCKETS && |
3923 | subtotal < MAX(ofproto->up.flow_eviction_threshold, total / 100)); | |
abe529af BP |
3924 | |
3925 | if (VLOG_IS_DBG_ENABLED()) { | |
3926 | struct ds s; | |
3927 | ||
3928 | ds_init(&s); | |
3929 | ds_put_cstr(&s, "keep"); | |
3930 | for (i = 0; i < N_BUCKETS; i++) { | |
3931 | if (i == bucket) { | |
3932 | ds_put_cstr(&s, ", drop"); | |
3933 | } | |
3934 | if (buckets[i]) { | |
3935 | ds_put_format(&s, " %d:%d", i * BUCKET_WIDTH, buckets[i]); | |
3936 | } | |
3937 | } | |
3938 | VLOG_INFO("%s: %s (msec:count)", ofproto->up.name, ds_cstr(&s)); | |
3939 | ds_destroy(&s); | |
3940 | } | |
3941 | ||
3942 | return bucket * BUCKET_WIDTH; | |
3943 | } | |
3944 | ||
abe529af | 3945 | static void |
b0f7b9b5 | 3946 | expire_subfacets(struct ofproto_dpif *ofproto, int dp_max_idle) |
abe529af | 3947 | { |
625b0720 BP |
3948 | /* Cutoff time for most flows. */ |
3949 | long long int normal_cutoff = time_msec() - dp_max_idle; | |
3950 | ||
3951 | /* We really want to keep flows for special protocols around, so use a more | |
3952 | * conservative cutoff. */ | |
3953 | long long int special_cutoff = time_msec() - 10000; | |
b99d3cee | 3954 | |
b0f7b9b5 | 3955 | struct subfacet *subfacet, *next_subfacet; |
1d85f9e5 | 3956 | struct subfacet *batch[SUBFACET_DESTROY_MAX_BATCH]; |
b99d3cee | 3957 | int n_batch; |
abe529af | 3958 | |
b99d3cee | 3959 | n_batch = 0; |
b0f7b9b5 BP |
3960 | HMAP_FOR_EACH_SAFE (subfacet, next_subfacet, hmap_node, |
3961 | &ofproto->subfacets) { | |
625b0720 BP |
3962 | long long int cutoff; |
3963 | ||
3964 | cutoff = (subfacet->slow & (SLOW_CFM | SLOW_LACP | SLOW_STP) | |
3965 | ? special_cutoff | |
3966 | : normal_cutoff); | |
b0f7b9b5 | 3967 | if (subfacet->used < cutoff) { |
6a7e895f | 3968 | if (subfacet->path != SF_NOT_INSTALLED) { |
b99d3cee | 3969 | batch[n_batch++] = subfacet; |
1d85f9e5 JP |
3970 | if (n_batch >= SUBFACET_DESTROY_MAX_BATCH) { |
3971 | subfacet_destroy_batch(ofproto, batch, n_batch); | |
b99d3cee BP |
3972 | n_batch = 0; |
3973 | } | |
3974 | } else { | |
3975 | subfacet_destroy(subfacet); | |
3976 | } | |
abe529af BP |
3977 | } |
3978 | } | |
b99d3cee BP |
3979 | |
3980 | if (n_batch > 0) { | |
1d85f9e5 | 3981 | subfacet_destroy_batch(ofproto, batch, n_batch); |
b99d3cee | 3982 | } |
abe529af BP |
3983 | } |
3984 | ||
3985 | /* If 'rule' is an OpenFlow rule, that has expired according to OpenFlow rules, | |
3986 | * then delete it entirely. */ | |
3987 | static void | |
3988 | rule_expire(struct rule_dpif *rule) | |
3989 | { | |
abe529af BP |
3990 | struct facet *facet, *next_facet; |
3991 | long long int now; | |
3992 | uint8_t reason; | |
3993 | ||
e2a3d183 BP |
3994 | if (rule->up.pending) { |
3995 | /* We'll have to expire it later. */ | |
3996 | return; | |
3997 | } | |
3998 | ||
abe529af BP |
3999 | /* Has 'rule' expired? */ |
4000 | now = time_msec(); | |
4001 | if (rule->up.hard_timeout | |
308881af | 4002 | && now > rule->up.modified + rule->up.hard_timeout * 1000) { |
abe529af | 4003 | reason = OFPRR_HARD_TIMEOUT; |
8ea6ac3e | 4004 | } else if (rule->up.idle_timeout |
1745cd08 | 4005 | && now > rule->up.used + rule->up.idle_timeout * 1000) { |
abe529af BP |
4006 | reason = OFPRR_IDLE_TIMEOUT; |
4007 | } else { | |
4008 | return; | |
4009 | } | |
4010 | ||
4011 | COVERAGE_INC(ofproto_dpif_expired); | |
4012 | ||
4013 | /* Update stats. (This is a no-op if the rule expired due to an idle | |
4014 | * timeout, because that only happens when the rule has no facets left.) */ | |
4015 | LIST_FOR_EACH_SAFE (facet, next_facet, list_node, &rule->facets) { | |
15baa734 | 4016 | facet_remove(facet); |
abe529af BP |
4017 | } |
4018 | ||
4019 | /* Get rid of the rule. */ | |
4020 | ofproto_rule_expire(&rule->up, reason); | |
4021 | } | |
4022 | \f | |
4023 | /* Facets. */ | |
4024 | ||
f3827897 | 4025 | /* Creates and returns a new facet owned by 'rule', given a 'flow'. |
abe529af BP |
4026 | * |
4027 | * The caller must already have determined that no facet with an identical | |
4028 | * 'flow' exists in 'ofproto' and that 'flow' is the best match for 'rule' in | |
f3827897 BP |
4029 | * the ofproto's classifier table. |
4030 | * | |
2b459b83 BP |
4031 | * 'hash' must be the return value of flow_hash(flow, 0). |
4032 | * | |
b0f7b9b5 BP |
4033 | * The facet will initially have no subfacets. The caller should create (at |
4034 | * least) one subfacet with subfacet_create(). */ | |
abe529af | 4035 | static struct facet * |
2b459b83 | 4036 | facet_create(struct rule_dpif *rule, const struct flow *flow, uint32_t hash) |
abe529af BP |
4037 | { |
4038 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto); | |
4039 | struct facet *facet; | |
4040 | ||
4041 | facet = xzalloc(sizeof *facet); | |
4042 | facet->used = time_msec(); | |
2b459b83 | 4043 | hmap_insert(&ofproto->facets, &facet->hmap_node, hash); |
abe529af BP |
4044 | list_push_back(&rule->facets, &facet->list_node); |
4045 | facet->rule = rule; | |
4046 | facet->flow = *flow; | |
b0f7b9b5 | 4047 | list_init(&facet->subfacets); |
abe529af BP |
4048 | netflow_flow_init(&facet->nf_flow); |
4049 | netflow_flow_update_time(ofproto->netflow, &facet->nf_flow, facet->used); | |
4050 | ||
abe529af BP |
4051 | return facet; |
4052 | } | |
4053 | ||
4054 | static void | |
4055 | facet_free(struct facet *facet) | |
4056 | { | |
abe529af BP |
4057 | free(facet); |
4058 | } | |
4059 | ||
3d9e05f8 BP |
4060 | /* Executes, within 'ofproto', the 'n_actions' actions in 'actions' on |
4061 | * 'packet', which arrived on 'in_port'. | |
4062 | * | |
4063 | * Takes ownership of 'packet'. */ | |
4064 | static bool | |
4065 | execute_odp_actions(struct ofproto_dpif *ofproto, const struct flow *flow, | |
4066 | const struct nlattr *odp_actions, size_t actions_len, | |
4067 | struct ofpbuf *packet) | |
4068 | { | |
4069 | struct odputil_keybuf keybuf; | |
4070 | struct ofpbuf key; | |
4071 | int error; | |
4072 | ||
6ff686f2 | 4073 | ofpbuf_use_stack(&key, &keybuf, sizeof keybuf); |
e1b1d06a JP |
4074 | odp_flow_key_from_flow(&key, flow, |
4075 | ofp_port_to_odp_port(ofproto, flow->in_port)); | |
80e5eed9 | 4076 | |
acf60855 | 4077 | error = dpif_execute(ofproto->backer->dpif, key.data, key.size, |
6ff686f2 | 4078 | odp_actions, actions_len, packet); |
80e5eed9 | 4079 | |
6ff686f2 PS |
4080 | ofpbuf_delete(packet); |
4081 | return !error; | |
abe529af BP |
4082 | } |
4083 | ||
abe529af BP |
4084 | /* Remove 'facet' from 'ofproto' and free up the associated memory: |
4085 | * | |
4086 | * - If 'facet' was installed in the datapath, uninstalls it and updates its | |
b0f7b9b5 | 4087 | * rule's statistics, via subfacet_uninstall(). |
abe529af BP |
4088 | * |
4089 | * - Removes 'facet' from its rule and from ofproto->facets. | |
4090 | */ | |
4091 | static void | |
15baa734 | 4092 | facet_remove(struct facet *facet) |
abe529af | 4093 | { |
15baa734 | 4094 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto); |
b0f7b9b5 BP |
4095 | struct subfacet *subfacet, *next_subfacet; |
4096 | ||
551a2f6c BP |
4097 | assert(!list_is_empty(&facet->subfacets)); |
4098 | ||
4099 | /* First uninstall all of the subfacets to get final statistics. */ | |
4100 | LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) { | |
15baa734 | 4101 | subfacet_uninstall(subfacet); |
551a2f6c BP |
4102 | } |
4103 | ||
4104 | /* Flush the final stats to the rule. | |
4105 | * | |
4106 | * This might require us to have at least one subfacet around so that we | |
4107 | * can use its actions for accounting in facet_account(), which is why we | |
4108 | * have uninstalled but not yet destroyed the subfacets. */ | |
15baa734 | 4109 | facet_flush_stats(facet); |
551a2f6c BP |
4110 | |
4111 | /* Now we're really all done so destroy everything. */ | |
b0f7b9b5 BP |
4112 | LIST_FOR_EACH_SAFE (subfacet, next_subfacet, list_node, |
4113 | &facet->subfacets) { | |
15baa734 | 4114 | subfacet_destroy__(subfacet); |
b0f7b9b5 | 4115 | } |
abe529af BP |
4116 | hmap_remove(&ofproto->facets, &facet->hmap_node); |
4117 | list_remove(&facet->list_node); | |
4118 | facet_free(facet); | |
4119 | } | |
4120 | ||
3de9590b BP |
4121 | /* Feed information from 'facet' back into the learning table to keep it in |
4122 | * sync with what is actually flowing through the datapath. */ | |
abe529af | 4123 | static void |
3de9590b | 4124 | facet_learn(struct facet *facet) |
abe529af | 4125 | { |
15baa734 | 4126 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto); |
3de9590b | 4127 | struct action_xlate_ctx ctx; |
abe529af | 4128 | |
3de9590b BP |
4129 | if (!facet->has_learn |
4130 | && !facet->has_normal | |
4131 | && (!facet->has_fin_timeout | |
4132 | || !(facet->tcp_flags & (TCP_FIN | TCP_RST)))) { | |
abe529af BP |
4133 | return; |
4134 | } | |
abe529af | 4135 | |
3de9590b BP |
4136 | action_xlate_ctx_init(&ctx, ofproto, &facet->flow, |
4137 | facet->flow.vlan_tci, | |
4138 | facet->rule, facet->tcp_flags, NULL); | |
4139 | ctx.may_learn = true; | |
f25d0cf3 BP |
4140 | xlate_actions_for_side_effects(&ctx, facet->rule->up.ofpacts, |
4141 | facet->rule->up.ofpacts_len); | |
3de9590b BP |
4142 | } |
4143 | ||
4144 | static void | |
4145 | facet_account(struct facet *facet) | |
4146 | { | |
4147 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto); | |
4148 | struct subfacet *subfacet; | |
4149 | const struct nlattr *a; | |
4150 | unsigned int left; | |
4151 | ovs_be16 vlan_tci; | |
4152 | uint64_t n_bytes; | |
abe529af | 4153 | |
75a75043 | 4154 | if (!facet->has_normal || !ofproto->has_bonded_bundles) { |
abe529af BP |
4155 | return; |
4156 | } | |
3de9590b | 4157 | n_bytes = facet->byte_count - facet->accounted_bytes; |
d78be13b BP |
4158 | |
4159 | /* This loop feeds byte counters to bond_account() for rebalancing to use | |
4160 | * as a basis. We also need to track the actual VLAN on which the packet | |
4161 | * is going to be sent to ensure that it matches the one passed to | |
4162 | * bond_choose_output_slave(). (Otherwise, we will account to the wrong | |
b95fc6ba BP |
4163 | * hash bucket.) |
4164 | * | |
4165 | * We use the actions from an arbitrary subfacet because they should all | |
4166 | * be equally valid for our purpose. */ | |
4167 | subfacet = CONTAINER_OF(list_front(&facet->subfacets), | |
4168 | struct subfacet, list_node); | |
d78be13b | 4169 | vlan_tci = facet->flow.vlan_tci; |
b95fc6ba BP |
4170 | NL_ATTR_FOR_EACH_UNSAFE (a, left, |
4171 | subfacet->actions, subfacet->actions_len) { | |
fea393b1 | 4172 | const struct ovs_action_push_vlan *vlan; |
d78be13b | 4173 | struct ofport_dpif *port; |
abe529af | 4174 | |
d78be13b | 4175 | switch (nl_attr_type(a)) { |
df2c07f4 | 4176 | case OVS_ACTION_ATTR_OUTPUT: |
abe529af BP |
4177 | port = get_odp_port(ofproto, nl_attr_get_u32(a)); |
4178 | if (port && port->bundle && port->bundle->bond) { | |
d78be13b | 4179 | bond_account(port->bundle->bond, &facet->flow, |
dc155bff | 4180 | vlan_tci_to_vid(vlan_tci), n_bytes); |
abe529af | 4181 | } |
d78be13b BP |
4182 | break; |
4183 | ||
fea393b1 BP |
4184 | case OVS_ACTION_ATTR_POP_VLAN: |
4185 | vlan_tci = htons(0); | |
d78be13b BP |
4186 | break; |
4187 | ||
fea393b1 BP |
4188 | case OVS_ACTION_ATTR_PUSH_VLAN: |
4189 | vlan = nl_attr_get(a); | |
4190 | vlan_tci = vlan->vlan_tci; | |
d78be13b | 4191 | break; |
abe529af BP |
4192 | } |
4193 | } | |
4194 | } | |
4195 | ||
abe529af BP |
4196 | /* Returns true if the only action for 'facet' is to send to the controller. |
4197 | * (We don't report NetFlow expiration messages for such facets because they | |
4198 | * are just part of the control logic for the network, not real traffic). */ | |
4199 | static bool | |
4200 | facet_is_controller_flow(struct facet *facet) | |
4201 | { | |
f25d0cf3 BP |
4202 | if (facet) { |
4203 | const struct rule *rule = &facet->rule->up; | |
4204 | const struct ofpact *ofpacts = rule->ofpacts; | |
4205 | size_t ofpacts_len = rule->ofpacts_len; | |
4206 | ||
dd30ff28 BP |
4207 | if (ofpacts_len > 0 && |
4208 | ofpacts->type == OFPACT_CONTROLLER && | |
f25d0cf3 BP |
4209 | ofpact_next(ofpacts) >= ofpact_end(ofpacts, ofpacts_len)) { |
4210 | return true; | |
4211 | } | |
4212 | } | |
4213 | return false; | |
abe529af BP |
4214 | } |
4215 | ||
4216 | /* Folds all of 'facet''s statistics into its rule. Also updates the | |
4217 | * accounting ofhook and emits a NetFlow expiration if appropriate. All of | |
4218 | * 'facet''s statistics in the datapath should have been zeroed and folded into | |
4219 | * its packet and byte counts before this function is called. */ | |
4220 | static void | |
15baa734 | 4221 | facet_flush_stats(struct facet *facet) |
abe529af | 4222 | { |
15baa734 | 4223 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto); |
b0f7b9b5 BP |
4224 | struct subfacet *subfacet; |
4225 | ||
4226 | LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) { | |
4227 | assert(!subfacet->dp_byte_count); | |
4228 | assert(!subfacet->dp_packet_count); | |
4229 | } | |
abe529af BP |
4230 | |
4231 | facet_push_stats(facet); | |
3de9590b BP |
4232 | if (facet->accounted_bytes < facet->byte_count) { |
4233 | facet_account(facet); | |
4234 | facet->accounted_bytes = facet->byte_count; | |
4235 | } | |
abe529af BP |
4236 | |
4237 | if (ofproto->netflow && !facet_is_controller_flow(facet)) { | |
4238 | struct ofexpired expired; | |
4239 | expired.flow = facet->flow; | |
4240 | expired.packet_count = facet->packet_count; | |
4241 | expired.byte_count = facet->byte_count; | |
4242 | expired.used = facet->used; | |
4243 | netflow_expire(ofproto->netflow, &facet->nf_flow, &expired); | |
4244 | } | |
4245 | ||
4246 | facet->rule->packet_count += facet->packet_count; | |
4247 | facet->rule->byte_count += facet->byte_count; | |
4248 | ||
4249 | /* Reset counters to prevent double counting if 'facet' ever gets | |
4250 | * reinstalled. */ | |
bbb5d219 | 4251 | facet_reset_counters(facet); |
abe529af BP |
4252 | |
4253 | netflow_flow_clear(&facet->nf_flow); | |
0e553d9c | 4254 | facet->tcp_flags = 0; |
abe529af BP |
4255 | } |
4256 | ||
4257 | /* Searches 'ofproto''s table of facets for one exactly equal to 'flow'. | |
4258 | * Returns it if found, otherwise a null pointer. | |
4259 | * | |
2b459b83 BP |
4260 | * 'hash' must be the return value of flow_hash(flow, 0). |
4261 | * | |
abe529af BP |
4262 | * The returned facet might need revalidation; use facet_lookup_valid() |
4263 | * instead if that is important. */ | |
4264 | static struct facet * | |
2b459b83 BP |
4265 | facet_find(struct ofproto_dpif *ofproto, |
4266 | const struct flow *flow, uint32_t hash) | |
abe529af BP |
4267 | { |
4268 | struct facet *facet; | |
4269 | ||
2b459b83 | 4270 | HMAP_FOR_EACH_WITH_HASH (facet, hmap_node, hash, &ofproto->facets) { |
abe529af BP |
4271 | if (flow_equal(flow, &facet->flow)) { |
4272 | return facet; | |
4273 | } | |
4274 | } | |
4275 | ||
4276 | return NULL; | |
4277 | } | |
4278 | ||
4279 | /* Searches 'ofproto''s table of facets for one exactly equal to 'flow'. | |
4280 | * Returns it if found, otherwise a null pointer. | |
4281 | * | |
2b459b83 BP |
4282 | * 'hash' must be the return value of flow_hash(flow, 0). |
4283 | * | |
abe529af BP |
4284 | * The returned facet is guaranteed to be valid. */ |
4285 | static struct facet * | |
2b459b83 BP |
4286 | facet_lookup_valid(struct ofproto_dpif *ofproto, const struct flow *flow, |
4287 | uint32_t hash) | |
abe529af | 4288 | { |
c57b2226 | 4289 | struct facet *facet; |
abe529af | 4290 | |
c57b2226 | 4291 | facet = facet_find(ofproto, flow, hash); |
abe529af | 4292 | if (facet |
0e4b3771 | 4293 | && (ofproto->need_revalidate |
c57b2226 BP |
4294 | || tag_set_intersects(&ofproto->revalidate_set, facet->tags))) { |
4295 | facet_revalidate(facet); | |
abe529af BP |
4296 | } |
4297 | ||
4298 | return facet; | |
4299 | } | |
4300 | ||
6a7e895f BP |
4301 | static const char * |
4302 | subfacet_path_to_string(enum subfacet_path path) | |
4303 | { | |
4304 | switch (path) { | |
4305 | case SF_NOT_INSTALLED: | |
4306 | return "not installed"; | |
4307 | case SF_FAST_PATH: | |
4308 | return "in fast path"; | |
4309 | case SF_SLOW_PATH: | |
4310 | return "in slow path"; | |
4311 | default: | |
4312 | return "<error>"; | |
4313 | } | |
4314 | } | |
4315 | ||
4316 | /* Returns the path in which a subfacet should be installed if its 'slow' | |
4317 | * member has the specified value. */ | |
4318 | static enum subfacet_path | |
4319 | subfacet_want_path(enum slow_path_reason slow) | |
4320 | { | |
4321 | return slow ? SF_SLOW_PATH : SF_FAST_PATH; | |
4322 | } | |
4323 | ||
4324 | /* Returns true if 'subfacet' needs to have its datapath flow updated, | |
4325 | * supposing that its actions have been recalculated as 'want_actions' and that | |
4326 | * 'slow' is nonzero iff 'subfacet' should be in the slow path. */ | |
4327 | static bool | |
4328 | subfacet_should_install(struct subfacet *subfacet, enum slow_path_reason slow, | |
4329 | const struct ofpbuf *want_actions) | |
4330 | { | |
4331 | enum subfacet_path want_path = subfacet_want_path(slow); | |
4332 | return (want_path != subfacet->path | |
4333 | || (want_path == SF_FAST_PATH | |
4334 | && (subfacet->actions_len != want_actions->size | |
4335 | || memcmp(subfacet->actions, want_actions->data, | |
4336 | subfacet->actions_len)))); | |
4337 | } | |
4338 | ||
6814e51f BP |
4339 | static bool |
4340 | facet_check_consistency(struct facet *facet) | |
4341 | { | |
4342 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 15); | |
4343 | ||
4344 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto); | |
4345 | ||
050ac423 BP |
4346 | uint64_t odp_actions_stub[1024 / 8]; |
4347 | struct ofpbuf odp_actions; | |
4348 | ||
6814e51f BP |
4349 | struct rule_dpif *rule; |
4350 | struct subfacet *subfacet; | |
c53e1132 | 4351 | bool may_log = false; |
6814e51f BP |
4352 | bool ok; |
4353 | ||
4354 | /* Check the rule for consistency. */ | |
c57b2226 BP |
4355 | rule = rule_dpif_lookup(ofproto, &facet->flow); |
4356 | ok = rule == facet->rule; | |
4357 | if (!ok) { | |
c53e1132 | 4358 | may_log = !VLOG_DROP_WARN(&rl); |
c53e1132 BP |
4359 | if (may_log) { |
4360 | struct ds s; | |
6814e51f | 4361 | |
c53e1132 BP |
4362 | ds_init(&s); |
4363 | flow_format(&s, &facet->flow); | |
4364 | ds_put_format(&s, ": facet associated with wrong rule (was " | |
4365 | "table=%"PRIu8",", facet->rule->up.table_id); | |
4366 | cls_rule_format(&facet->rule->up.cr, &s); | |
4367 | ds_put_format(&s, ") (should have been table=%"PRIu8",", | |
4368 | rule->up.table_id); | |
4369 | cls_rule_format(&rule->up.cr, &s); | |
4370 | ds_put_char(&s, ')'); | |
6814e51f | 4371 | |
c53e1132 BP |
4372 | VLOG_WARN("%s", ds_cstr(&s)); |
4373 | ds_destroy(&s); | |
4374 | } | |
6814e51f BP |
4375 | } |
4376 | ||
4377 | /* Check the datapath actions for consistency. */ | |
050ac423 | 4378 | ofpbuf_use_stub(&odp_actions, odp_actions_stub, sizeof odp_actions_stub); |
6814e51f | 4379 | LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) { |
6a7e895f | 4380 | enum subfacet_path want_path; |
9616614b | 4381 | struct odputil_keybuf keybuf; |
6814e51f | 4382 | struct action_xlate_ctx ctx; |
9616614b BP |
4383 | struct ofpbuf key; |
4384 | struct ds s; | |
6814e51f BP |
4385 | |
4386 | action_xlate_ctx_init(&ctx, ofproto, &facet->flow, | |
0e553d9c | 4387 | subfacet->initial_tci, rule, 0, NULL); |
f25d0cf3 | 4388 | xlate_actions(&ctx, rule->up.ofpacts, rule->up.ofpacts_len, |
050ac423 | 4389 | &odp_actions); |
6814e51f | 4390 | |
6a7e895f BP |
4391 | if (subfacet->path == SF_NOT_INSTALLED) { |
4392 | /* This only happens if the datapath reported an error when we | |
4393 | * tried to install the flow. Don't flag another error here. */ | |
4394 | continue; | |
4395 | } | |
4396 | ||
4397 | want_path = subfacet_want_path(subfacet->slow); | |
4398 | if (want_path == SF_SLOW_PATH && subfacet->path == SF_SLOW_PATH) { | |
4399 | /* The actions for slow-path flows may legitimately vary from one | |
4400 | * packet to the next. We're done. */ | |
050ac423 | 4401 | continue; |
6814e51f BP |
4402 | } |
4403 | ||
6a7e895f | 4404 | if (!subfacet_should_install(subfacet, subfacet->slow, &odp_actions)) { |
9616614b BP |
4405 | continue; |
4406 | } | |
c53e1132 | 4407 | |
9616614b BP |
4408 | /* Inconsistency! */ |
4409 | if (ok) { | |
4410 | may_log = !VLOG_DROP_WARN(&rl); | |
4411 | ok = false; | |
4412 | } | |
4413 | if (!may_log) { | |
4414 | /* Rate-limited, skip reporting. */ | |
4415 | continue; | |
4416 | } | |
c53e1132 | 4417 | |
9616614b BP |
4418 | ds_init(&s); |
4419 | subfacet_get_key(subfacet, &keybuf, &key); | |
4420 | odp_flow_key_format(key.data, key.size, &s); | |
4421 | ||
4422 | ds_put_cstr(&s, ": inconsistency in subfacet"); | |
6a7e895f | 4423 | if (want_path != subfacet->path) { |
9616614b BP |
4424 | enum odp_key_fitness fitness = subfacet->key_fitness; |
4425 | ||
6a7e895f BP |
4426 | ds_put_format(&s, " (%s, fitness=%s)", |
4427 | subfacet_path_to_string(subfacet->path), | |
9616614b | 4428 | odp_key_fitness_to_string(fitness)); |
6a7e895f BP |
4429 | ds_put_format(&s, " (should have been %s)", |
4430 | subfacet_path_to_string(want_path)); | |
4431 | } else if (want_path == SF_FAST_PATH) { | |
9616614b BP |
4432 | ds_put_cstr(&s, " (actions were: "); |
4433 | format_odp_actions(&s, subfacet->actions, | |
4434 | subfacet->actions_len); | |
4435 | ds_put_cstr(&s, ") (correct actions: "); | |
4436 | format_odp_actions(&s, odp_actions.data, odp_actions.size); | |
4437 | ds_put_char(&s, ')'); | |
4438 | } else { | |
4439 | ds_put_cstr(&s, " (actions: "); | |
4440 | format_odp_actions(&s, subfacet->actions, | |
4441 | subfacet->actions_len); | |
4442 | ds_put_char(&s, ')'); | |
6814e51f | 4443 | } |
9616614b BP |
4444 | VLOG_WARN("%s", ds_cstr(&s)); |
4445 | ds_destroy(&s); | |
6814e51f | 4446 | } |
050ac423 | 4447 | ofpbuf_uninit(&odp_actions); |
6814e51f BP |
4448 | |
4449 | return ok; | |
4450 | } | |
4451 | ||
15baa734 | 4452 | /* Re-searches the classifier for 'facet': |
abe529af BP |
4453 | * |
4454 | * - If the rule found is different from 'facet''s current rule, moves | |
4455 | * 'facet' to the new rule and recompiles its actions. | |
4456 | * | |
4457 | * - If the rule found is the same as 'facet''s current rule, leaves 'facet' | |
c57b2226 BP |
4458 | * where it is and recompiles its actions anyway. */ |
4459 | static void | |
15baa734 | 4460 | facet_revalidate(struct facet *facet) |
abe529af | 4461 | { |
15baa734 | 4462 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto); |
b95fc6ba BP |
4463 | struct actions { |
4464 | struct nlattr *odp_actions; | |
4465 | size_t actions_len; | |
4466 | }; | |
4467 | struct actions *new_actions; | |
4468 | ||
abe529af | 4469 | struct action_xlate_ctx ctx; |
050ac423 BP |
4470 | uint64_t odp_actions_stub[1024 / 8]; |
4471 | struct ofpbuf odp_actions; | |
4472 | ||
abe529af | 4473 | struct rule_dpif *new_rule; |
b0f7b9b5 | 4474 | struct subfacet *subfacet; |
b95fc6ba | 4475 | int i; |
abe529af BP |
4476 | |
4477 | COVERAGE_INC(facet_revalidate); | |
4478 | ||
c57b2226 | 4479 | new_rule = rule_dpif_lookup(ofproto, &facet->flow); |
abe529af | 4480 | |
df2c07f4 | 4481 | /* Calculate new datapath actions. |
abe529af BP |
4482 | * |
4483 | * We do not modify any 'facet' state yet, because we might need to, e.g., | |
4484 | * emit a NetFlow expiration and, if so, we need to have the old state | |
4485 | * around to properly compose it. */ | |
abe529af | 4486 | |
df2c07f4 JP |
4487 | /* If the datapath actions changed or the installability changed, |
4488 | * then we need to talk to the datapath. */ | |
b95fc6ba BP |
4489 | i = 0; |
4490 | new_actions = NULL; | |
4491 | memset(&ctx, 0, sizeof ctx); | |
050ac423 | 4492 | ofpbuf_use_stub(&odp_actions, odp_actions_stub, sizeof odp_actions_stub); |
b0f7b9b5 | 4493 | LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) { |
6a7e895f | 4494 | enum slow_path_reason slow; |
b95fc6ba | 4495 | |
e84173dc | 4496 | action_xlate_ctx_init(&ctx, ofproto, &facet->flow, |
0e553d9c | 4497 | subfacet->initial_tci, new_rule, 0, NULL); |
f25d0cf3 | 4498 | xlate_actions(&ctx, new_rule->up.ofpacts, new_rule->up.ofpacts_len, |
050ac423 | 4499 | &odp_actions); |
b0f7b9b5 | 4500 | |
6a7e895f BP |
4501 | slow = (subfacet->slow & SLOW_MATCH) | ctx.slow; |
4502 | if (subfacet_should_install(subfacet, slow, &odp_actions)) { | |
4503 | struct dpif_flow_stats stats; | |
4504 | ||
4505 | subfacet_install(subfacet, | |
4506 | odp_actions.data, odp_actions.size, &stats, slow); | |
4507 | subfacet_update_stats(subfacet, &stats); | |
b95fc6ba BP |
4508 | |
4509 | if (!new_actions) { | |
4510 | new_actions = xcalloc(list_size(&facet->subfacets), | |
4511 | sizeof *new_actions); | |
4512 | } | |
050ac423 BP |
4513 | new_actions[i].odp_actions = xmemdup(odp_actions.data, |
4514 | odp_actions.size); | |
4515 | new_actions[i].actions_len = odp_actions.size; | |
abe529af | 4516 | } |
b95fc6ba | 4517 | |
b95fc6ba | 4518 | i++; |
b0f7b9b5 | 4519 | } |
050ac423 BP |
4520 | ofpbuf_uninit(&odp_actions); |
4521 | ||
b95fc6ba | 4522 | if (new_actions) { |
15baa734 | 4523 | facet_flush_stats(facet); |
abe529af BP |
4524 | } |
4525 | ||
4526 | /* Update 'facet' now that we've taken care of all the old state. */ | |
4527 | facet->tags = ctx.tags; | |
4528 | facet->nf_flow.output_iface = ctx.nf_output_iface; | |
75a75043 BP |
4529 | facet->has_learn = ctx.has_learn; |
4530 | facet->has_normal = ctx.has_normal; | |
0e553d9c | 4531 | facet->has_fin_timeout = ctx.has_fin_timeout; |
9d24de3b | 4532 | facet->mirrors = ctx.mirrors; |
6a7e895f BP |
4533 | |
4534 | i = 0; | |
4535 | LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) { | |
4536 | subfacet->slow = (subfacet->slow & SLOW_MATCH) | ctx.slow; | |
4537 | ||
4538 | if (new_actions && new_actions[i].odp_actions) { | |
4539 | free(subfacet->actions); | |
4540 | subfacet->actions = new_actions[i].odp_actions; | |
4541 | subfacet->actions_len = new_actions[i].actions_len; | |
b95fc6ba | 4542 | } |
6a7e895f | 4543 | i++; |
abe529af | 4544 | } |
6a7e895f BP |
4545 | free(new_actions); |
4546 | ||
abe529af BP |
4547 | if (facet->rule != new_rule) { |
4548 | COVERAGE_INC(facet_changed_rule); | |
4549 | list_remove(&facet->list_node); | |
4550 | list_push_back(&new_rule->facets, &facet->list_node); | |
4551 | facet->rule = new_rule; | |
4552 | facet->used = new_rule->up.created; | |
9d24de3b | 4553 | facet->prev_used = facet->used; |
abe529af | 4554 | } |
abe529af BP |
4555 | } |
4556 | ||
4557 | /* Updates 'facet''s used time. Caller is responsible for calling | |
4558 | * facet_push_stats() to update the flows which 'facet' resubmits into. */ | |
4559 | static void | |
15baa734 | 4560 | facet_update_time(struct facet *facet, long long int used) |
abe529af | 4561 | { |
15baa734 | 4562 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto); |
abe529af BP |
4563 | if (used > facet->used) { |
4564 | facet->used = used; | |
1745cd08 | 4565 | ofproto_rule_update_used(&facet->rule->up, used); |
abe529af BP |
4566 | netflow_flow_update_time(ofproto->netflow, &facet->nf_flow, used); |
4567 | } | |
4568 | } | |
4569 | ||
bbb5d219 EJ |
4570 | static void |
4571 | facet_reset_counters(struct facet *facet) | |
4572 | { | |
4573 | facet->packet_count = 0; | |
4574 | facet->byte_count = 0; | |
9d24de3b JP |
4575 | facet->prev_packet_count = 0; |
4576 | facet->prev_byte_count = 0; | |
bbb5d219 EJ |
4577 | facet->accounted_bytes = 0; |
4578 | } | |
4579 | ||
abe529af BP |
4580 | static void |
4581 | facet_push_stats(struct facet *facet) | |
4582 | { | |
112bc5f4 | 4583 | struct dpif_flow_stats stats; |
abe529af | 4584 | |
9d24de3b JP |
4585 | assert(facet->packet_count >= facet->prev_packet_count); |
4586 | assert(facet->byte_count >= facet->prev_byte_count); | |
4587 | assert(facet->used >= facet->prev_used); | |
abe529af | 4588 | |
112bc5f4 BP |
4589 | stats.n_packets = facet->packet_count - facet->prev_packet_count; |
4590 | stats.n_bytes = facet->byte_count - facet->prev_byte_count; | |
4591 | stats.used = facet->used; | |
4592 | stats.tcp_flags = 0; | |
abe529af | 4593 | |
112bc5f4 | 4594 | if (stats.n_packets || stats.n_bytes || facet->used > facet->prev_used) { |
9d24de3b JP |
4595 | facet->prev_packet_count = facet->packet_count; |
4596 | facet->prev_byte_count = facet->byte_count; | |
4597 | facet->prev_used = facet->used; | |
abe529af | 4598 | |
112bc5f4 | 4599 | flow_push_stats(facet->rule, &facet->flow, &stats); |
9d24de3b JP |
4600 | |
4601 | update_mirror_stats(ofproto_dpif_cast(facet->rule->up.ofproto), | |
112bc5f4 | 4602 | facet->mirrors, stats.n_packets, stats.n_bytes); |
abe529af BP |
4603 | } |
4604 | } | |
4605 | ||
abe529af | 4606 | static void |
112bc5f4 | 4607 | rule_credit_stats(struct rule_dpif *rule, const struct dpif_flow_stats *stats) |
abe529af | 4608 | { |
112bc5f4 BP |
4609 | rule->packet_count += stats->n_packets; |
4610 | rule->byte_count += stats->n_bytes; | |
4611 | ofproto_rule_update_used(&rule->up, stats->used); | |
abe529af BP |
4612 | } |
4613 | ||
4614 | /* Pushes flow statistics to the rules which 'flow' resubmits into given | |
9d24de3b | 4615 | * 'rule''s actions and mirrors. */ |
abe529af | 4616 | static void |
18b2a258 | 4617 | flow_push_stats(struct rule_dpif *rule, |
112bc5f4 | 4618 | const struct flow *flow, const struct dpif_flow_stats *stats) |
abe529af BP |
4619 | { |
4620 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto); | |
112bc5f4 | 4621 | struct action_xlate_ctx ctx; |
abe529af | 4622 | |
112bc5f4 | 4623 | ofproto_rule_update_used(&rule->up, stats->used); |
f3b50afb | 4624 | |
112bc5f4 | 4625 | action_xlate_ctx_init(&ctx, ofproto, flow, flow->vlan_tci, rule, |
0e553d9c | 4626 | 0, NULL); |
112bc5f4 | 4627 | ctx.resubmit_stats = stats; |
f25d0cf3 BP |
4628 | xlate_actions_for_side_effects(&ctx, rule->up.ofpacts, |
4629 | rule->up.ofpacts_len); | |
abe529af BP |
4630 | } |
4631 | \f | |
b0f7b9b5 BP |
4632 | /* Subfacets. */ |
4633 | ||
4634 | static struct subfacet * | |
acf60855 JP |
4635 | subfacet_find(struct ofproto_dpif *ofproto, |
4636 | const struct nlattr *key, size_t key_len, uint32_t key_hash, | |
4637 | const struct flow *flow) | |
b0f7b9b5 BP |
4638 | { |
4639 | struct subfacet *subfacet; | |
4640 | ||
4641 | HMAP_FOR_EACH_WITH_HASH (subfacet, hmap_node, key_hash, | |
4642 | &ofproto->subfacets) { | |
4643 | if (subfacet->key | |
4644 | ? (subfacet->key_len == key_len | |
4645 | && !memcmp(key, subfacet->key, key_len)) | |
4646 | : flow_equal(flow, &subfacet->facet->flow)) { | |
4647 | return subfacet; | |
4648 | } | |
4649 | } | |
4650 | ||
4651 | return NULL; | |
4652 | } | |
4653 | ||
4654 | /* Searches 'facet' (within 'ofproto') for a subfacet with the specified | |
4655 | * 'key_fitness', 'key', and 'key_len'. Returns the existing subfacet if | |
b95fc6ba BP |
4656 | * there is one, otherwise creates and returns a new subfacet. |
4657 | * | |
4658 | * If the returned subfacet is new, then subfacet->actions will be NULL, in | |
4659 | * which case the caller must populate the actions with | |
4660 | * subfacet_make_actions(). */ | |
b0f7b9b5 | 4661 | static struct subfacet * |
15baa734 | 4662 | subfacet_create(struct facet *facet, enum odp_key_fitness key_fitness, |
459b16a1 BP |
4663 | const struct nlattr *key, size_t key_len, |
4664 | ovs_be16 initial_tci, long long int now) | |
b0f7b9b5 | 4665 | { |
15baa734 | 4666 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto); |
b0f7b9b5 BP |
4667 | uint32_t key_hash = odp_flow_key_hash(key, key_len); |
4668 | struct subfacet *subfacet; | |
4669 | ||
3b145dd7 BP |
4670 | if (list_is_empty(&facet->subfacets)) { |
4671 | subfacet = &facet->one_subfacet; | |
4672 | } else { | |
acf60855 JP |
4673 | subfacet = subfacet_find(ofproto, key, key_len, key_hash, |
4674 | &facet->flow); | |
3b145dd7 BP |
4675 | if (subfacet) { |
4676 | if (subfacet->facet == facet) { | |
4677 | return subfacet; | |
4678 | } | |
4679 | ||
4680 | /* This shouldn't happen. */ | |
4681 | VLOG_ERR_RL(&rl, "subfacet with wrong facet"); | |
4682 | subfacet_destroy(subfacet); | |
b0f7b9b5 BP |
4683 | } |
4684 | ||
3b145dd7 | 4685 | subfacet = xmalloc(sizeof *subfacet); |
b0f7b9b5 BP |
4686 | } |
4687 | ||
b0f7b9b5 BP |
4688 | hmap_insert(&ofproto->subfacets, &subfacet->hmap_node, key_hash); |
4689 | list_push_back(&facet->subfacets, &subfacet->list_node); | |
4690 | subfacet->facet = facet; | |
b0f7b9b5 BP |
4691 | subfacet->key_fitness = key_fitness; |
4692 | if (key_fitness != ODP_FIT_PERFECT) { | |
4693 | subfacet->key = xmemdup(key, key_len); | |
4694 | subfacet->key_len = key_len; | |
26cd7e34 BP |
4695 | } else { |
4696 | subfacet->key = NULL; | |
4697 | subfacet->key_len = 0; | |
b0f7b9b5 | 4698 | } |
459b16a1 | 4699 | subfacet->used = now; |
26cd7e34 BP |
4700 | subfacet->dp_packet_count = 0; |
4701 | subfacet->dp_byte_count = 0; | |
4702 | subfacet->actions_len = 0; | |
4703 | subfacet->actions = NULL; | |
6a7e895f BP |
4704 | subfacet->slow = (subfacet->key_fitness == ODP_FIT_TOO_LITTLE |
4705 | ? SLOW_MATCH | |
4706 | : 0); | |
4707 | subfacet->path = SF_NOT_INSTALLED; | |
e84173dc | 4708 | subfacet->initial_tci = initial_tci; |
b0f7b9b5 BP |
4709 | |
4710 | return subfacet; | |
4711 | } | |
4712 | ||
b0f7b9b5 BP |
4713 | /* Uninstalls 'subfacet' from the datapath, if it is installed, removes it from |
4714 | * its facet within 'ofproto', and frees it. */ | |
4715 | static void | |
15baa734 | 4716 | subfacet_destroy__(struct subfacet *subfacet) |
b0f7b9b5 | 4717 | { |
15baa734 BP |
4718 | struct facet *facet = subfacet->facet; |
4719 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto); | |
4720 | ||
4721 | subfacet_uninstall(subfacet); | |
b0f7b9b5 BP |
4722 | hmap_remove(&ofproto->subfacets, &subfacet->hmap_node); |
4723 | list_remove(&subfacet->list_node); | |
4724 | free(subfacet->key); | |
b95fc6ba | 4725 | free(subfacet->actions); |
26cd7e34 BP |
4726 | if (subfacet != &facet->one_subfacet) { |
4727 | free(subfacet); | |
4728 | } | |
b0f7b9b5 BP |
4729 | } |
4730 | ||
4731 | /* Destroys 'subfacet', as with subfacet_destroy__(), and then if this was the | |
4732 | * last remaining subfacet in its facet destroys the facet too. */ | |
4733 | static void | |
15baa734 | 4734 | subfacet_destroy(struct subfacet *subfacet) |
b0f7b9b5 BP |
4735 | { |
4736 | struct facet *facet = subfacet->facet; | |
4737 | ||
551a2f6c BP |
4738 | if (list_is_singleton(&facet->subfacets)) { |
4739 | /* facet_remove() needs at least one subfacet (it will remove it). */ | |
15baa734 | 4740 | facet_remove(facet); |
551a2f6c | 4741 | } else { |
15baa734 | 4742 | subfacet_destroy__(subfacet); |
b0f7b9b5 BP |
4743 | } |
4744 | } | |
4745 | ||
1d85f9e5 JP |
4746 | static void |
4747 | subfacet_destroy_batch(struct ofproto_dpif *ofproto, | |
4748 | struct subfacet **subfacets, int n) | |
4749 | { | |
4750 | struct odputil_keybuf keybufs[SUBFACET_DESTROY_MAX_BATCH]; | |
4751 | struct dpif_op ops[SUBFACET_DESTROY_MAX_BATCH]; | |
4752 | struct dpif_op *opsp[SUBFACET_DESTROY_MAX_BATCH]; | |
4753 | struct ofpbuf keys[SUBFACET_DESTROY_MAX_BATCH]; | |
4754 | struct dpif_flow_stats stats[SUBFACET_DESTROY_MAX_BATCH]; | |
4755 | int i; | |
4756 | ||
4757 | for (i = 0; i < n; i++) { | |
4758 | ops[i].type = DPIF_OP_FLOW_DEL; | |
4759 | subfacet_get_key(subfacets[i], &keybufs[i], &keys[i]); | |
4760 | ops[i].u.flow_del.key = keys[i].data; | |
4761 | ops[i].u.flow_del.key_len = keys[i].size; | |
4762 | ops[i].u.flow_del.stats = &stats[i]; | |
4763 | opsp[i] = &ops[i]; | |
4764 | } | |
4765 | ||
acf60855 | 4766 | dpif_operate(ofproto->backer->dpif, opsp, n); |
1d85f9e5 JP |
4767 | for (i = 0; i < n; i++) { |
4768 | subfacet_reset_dp_stats(subfacets[i], &stats[i]); | |
4769 | subfacets[i]->path = SF_NOT_INSTALLED; | |
4770 | subfacet_destroy(subfacets[i]); | |
4771 | } | |
4772 | } | |
4773 | ||
b0f7b9b5 BP |
4774 | /* Initializes 'key' with the sequence of OVS_KEY_ATTR_* Netlink attributes |
4775 | * that can be used to refer to 'subfacet'. The caller must provide 'keybuf' | |
4776 | * for use as temporary storage. */ | |
4777 | static void | |
4778 | subfacet_get_key(struct subfacet *subfacet, struct odputil_keybuf *keybuf, | |
4779 | struct ofpbuf *key) | |
4780 | { | |
e1b1d06a | 4781 | |
b0f7b9b5 | 4782 | if (!subfacet->key) { |
e1b1d06a | 4783 | struct ofproto_dpif *ofproto; |
ddbfda84 JP |
4784 | struct flow *flow = &subfacet->facet->flow; |
4785 | ||
b0f7b9b5 | 4786 | ofpbuf_use_stack(key, keybuf, sizeof *keybuf); |
e1b1d06a JP |
4787 | ofproto = ofproto_dpif_cast(subfacet->facet->rule->up.ofproto); |
4788 | odp_flow_key_from_flow(key, flow, | |
4789 | ofp_port_to_odp_port(ofproto, flow->in_port)); | |
b0f7b9b5 BP |
4790 | } else { |
4791 | ofpbuf_use_const(key, subfacet->key, subfacet->key_len); | |
4792 | } | |
4793 | } | |
4794 | ||
5fe20d5d BP |
4795 | /* Composes the datapath actions for 'subfacet' based on its rule's actions. |
4796 | * Translates the actions into 'odp_actions', which the caller must have | |
4797 | * initialized and is responsible for uninitializing. */ | |
b95fc6ba | 4798 | static void |
5fe20d5d BP |
4799 | subfacet_make_actions(struct subfacet *subfacet, const struct ofpbuf *packet, |
4800 | struct ofpbuf *odp_actions) | |
b95fc6ba BP |
4801 | { |
4802 | struct facet *facet = subfacet->facet; | |
18b2a258 | 4803 | struct rule_dpif *rule = facet->rule; |
15baa734 | 4804 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto); |
050ac423 | 4805 | |
b95fc6ba BP |
4806 | struct action_xlate_ctx ctx; |
4807 | ||
15baa734 | 4808 | action_xlate_ctx_init(&ctx, ofproto, &facet->flow, subfacet->initial_tci, |
0e553d9c | 4809 | rule, 0, packet); |
f25d0cf3 | 4810 | xlate_actions(&ctx, rule->up.ofpacts, rule->up.ofpacts_len, odp_actions); |
b95fc6ba | 4811 | facet->tags = ctx.tags; |
b95fc6ba BP |
4812 | facet->has_learn = ctx.has_learn; |
4813 | facet->has_normal = ctx.has_normal; | |
0e553d9c | 4814 | facet->has_fin_timeout = ctx.has_fin_timeout; |
b95fc6ba | 4815 | facet->nf_flow.output_iface = ctx.nf_output_iface; |
9d24de3b | 4816 | facet->mirrors = ctx.mirrors; |
b95fc6ba | 4817 | |
6a7e895f | 4818 | subfacet->slow = (subfacet->slow & SLOW_MATCH) | ctx.slow; |
5fe20d5d BP |
4819 | if (subfacet->actions_len != odp_actions->size |
4820 | || memcmp(subfacet->actions, odp_actions->data, odp_actions->size)) { | |
b95fc6ba | 4821 | free(subfacet->actions); |
5fe20d5d BP |
4822 | subfacet->actions_len = odp_actions->size; |
4823 | subfacet->actions = xmemdup(odp_actions->data, odp_actions->size); | |
b95fc6ba | 4824 | } |
b95fc6ba BP |
4825 | } |
4826 | ||
b0f7b9b5 BP |
4827 | /* Updates 'subfacet''s datapath flow, setting its actions to 'actions_len' |
4828 | * bytes of actions in 'actions'. If 'stats' is non-null, statistics counters | |
4829 | * in the datapath will be zeroed and 'stats' will be updated with traffic new | |
4830 | * since 'subfacet' was last updated. | |
4831 | * | |
4832 | * Returns 0 if successful, otherwise a positive errno value. */ | |
4833 | static int | |
15baa734 | 4834 | subfacet_install(struct subfacet *subfacet, |
b0f7b9b5 | 4835 | const struct nlattr *actions, size_t actions_len, |
6a7e895f BP |
4836 | struct dpif_flow_stats *stats, |
4837 | enum slow_path_reason slow) | |
b0f7b9b5 | 4838 | { |
15baa734 BP |
4839 | struct facet *facet = subfacet->facet; |
4840 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto); | |
6a7e895f BP |
4841 | enum subfacet_path path = subfacet_want_path(slow); |
4842 | uint64_t slow_path_stub[128 / 8]; | |
b0f7b9b5 BP |
4843 | struct odputil_keybuf keybuf; |
4844 | enum dpif_flow_put_flags flags; | |
4845 | struct ofpbuf key; | |
4846 | int ret; | |
4847 | ||
4848 | flags = DPIF_FP_CREATE | DPIF_FP_MODIFY; | |
4849 | if (stats) { | |
4850 | flags |= DPIF_FP_ZERO_STATS; | |
4851 | } | |
4852 | ||
6a7e895f BP |
4853 | if (path == SF_SLOW_PATH) { |
4854 | compose_slow_path(ofproto, &facet->flow, slow, | |
4855 | slow_path_stub, sizeof slow_path_stub, | |
4856 | &actions, &actions_len); | |
4857 | } | |
4858 | ||
b0f7b9b5 | 4859 | subfacet_get_key(subfacet, &keybuf, &key); |
acf60855 | 4860 | ret = dpif_flow_put(ofproto->backer->dpif, flags, key.data, key.size, |
b0f7b9b5 BP |
4861 | actions, actions_len, stats); |
4862 | ||
4863 | if (stats) { | |
4864 | subfacet_reset_dp_stats(subfacet, stats); | |
4865 | } | |
4866 | ||
6a7e895f BP |
4867 | if (!ret) { |
4868 | subfacet->path = path; | |
4869 | } | |
b0f7b9b5 BP |
4870 | return ret; |
4871 | } | |
4872 | ||
6a7e895f BP |
4873 | static int |
4874 | subfacet_reinstall(struct subfacet *subfacet, struct dpif_flow_stats *stats) | |
4875 | { | |
4876 | return subfacet_install(subfacet, subfacet->actions, subfacet->actions_len, | |
4877 | stats, subfacet->slow); | |
4878 | } | |
4879 | ||
b0f7b9b5 BP |
4880 | /* If 'subfacet' is installed in the datapath, uninstalls it. */ |
4881 | static void | |
15baa734 | 4882 | subfacet_uninstall(struct subfacet *subfacet) |
b0f7b9b5 | 4883 | { |
6a7e895f | 4884 | if (subfacet->path != SF_NOT_INSTALLED) { |
15baa734 BP |
4885 | struct rule_dpif *rule = subfacet->facet->rule; |
4886 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto); | |
b0f7b9b5 BP |
4887 | struct odputil_keybuf keybuf; |
4888 | struct dpif_flow_stats stats; | |
4889 | struct ofpbuf key; | |
4890 | int error; | |
4891 | ||
4892 | subfacet_get_key(subfacet, &keybuf, &key); | |
acf60855 JP |
4893 | error = dpif_flow_del(ofproto->backer->dpif, |
4894 | key.data, key.size, &stats); | |
b0f7b9b5 BP |
4895 | subfacet_reset_dp_stats(subfacet, &stats); |
4896 | if (!error) { | |
15baa734 | 4897 | subfacet_update_stats(subfacet, &stats); |
b0f7b9b5 | 4898 | } |
6a7e895f | 4899 | subfacet->path = SF_NOT_INSTALLED; |
b0f7b9b5 BP |
4900 | } else { |
4901 | assert(subfacet->dp_packet_count == 0); | |
4902 | assert(subfacet->dp_byte_count == 0); | |
4903 | } | |
4904 | } | |
4905 | ||
4906 | /* Resets 'subfacet''s datapath statistics counters. This should be called | |
4907 | * when 'subfacet''s statistics are cleared in the datapath. If 'stats' is | |
4908 | * non-null, it should contain the statistics returned by dpif when 'subfacet' | |
4909 | * was reset in the datapath. 'stats' will be modified to include only | |
4910 | * statistics new since 'subfacet' was last updated. */ | |
4911 | static void | |
4912 | subfacet_reset_dp_stats(struct subfacet *subfacet, | |
4913 | struct dpif_flow_stats *stats) | |
4914 | { | |
4915 | if (stats | |
4916 | && subfacet->dp_packet_count <= stats->n_packets | |
4917 | && subfacet->dp_byte_count <= stats->n_bytes) { | |
4918 | stats->n_packets -= subfacet->dp_packet_count; | |
4919 | stats->n_bytes -= subfacet->dp_byte_count; | |
4920 | } | |
4921 | ||
4922 | subfacet->dp_packet_count = 0; | |
4923 | subfacet->dp_byte_count = 0; | |
4924 | } | |
4925 | ||
4926 | /* Updates 'subfacet''s used time. The caller is responsible for calling | |
4927 | * facet_push_stats() to update the flows which 'subfacet' resubmits into. */ | |
4928 | static void | |
15baa734 | 4929 | subfacet_update_time(struct subfacet *subfacet, long long int used) |
b0f7b9b5 BP |
4930 | { |
4931 | if (used > subfacet->used) { | |
4932 | subfacet->used = used; | |
15baa734 | 4933 | facet_update_time(subfacet->facet, used); |
b0f7b9b5 BP |
4934 | } |
4935 | } | |
4936 | ||
4937 | /* Folds the statistics from 'stats' into the counters in 'subfacet'. | |
4938 | * | |
4939 | * Because of the meaning of a subfacet's counters, it only makes sense to do | |
4940 | * this if 'stats' are not tracked in the datapath, that is, if 'stats' | |
4941 | * represents a packet that was sent by hand or if it represents statistics | |
4942 | * that have been cleared out of the datapath. */ | |
4943 | static void | |
15baa734 | 4944 | subfacet_update_stats(struct subfacet *subfacet, |
b0f7b9b5 BP |
4945 | const struct dpif_flow_stats *stats) |
4946 | { | |
4947 | if (stats->n_packets || stats->used > subfacet->used) { | |
4948 | struct facet *facet = subfacet->facet; | |
4949 | ||
15baa734 | 4950 | subfacet_update_time(subfacet, stats->used); |
b0f7b9b5 BP |
4951 | facet->packet_count += stats->n_packets; |
4952 | facet->byte_count += stats->n_bytes; | |
0e553d9c | 4953 | facet->tcp_flags |= stats->tcp_flags; |
b0f7b9b5 BP |
4954 | facet_push_stats(facet); |
4955 | netflow_flow_update_flags(&facet->nf_flow, stats->tcp_flags); | |
4956 | } | |
4957 | } | |
4958 | \f | |
abe529af BP |
4959 | /* Rules. */ |
4960 | ||
4961 | static struct rule_dpif * | |
c57b2226 BP |
4962 | rule_dpif_lookup(struct ofproto_dpif *ofproto, const struct flow *flow) |
4963 | { | |
c57b2226 BP |
4964 | struct rule_dpif *rule; |
4965 | ||
4966 | rule = rule_dpif_lookup__(ofproto, flow, 0); | |
4967 | if (rule) { | |
4968 | return rule; | |
4969 | } | |
4970 | ||
c376f9a3 | 4971 | return rule_dpif_miss_rule(ofproto, flow); |
c57b2226 BP |
4972 | } |
4973 | ||
4974 | static struct rule_dpif * | |
4975 | rule_dpif_lookup__(struct ofproto_dpif *ofproto, const struct flow *flow, | |
4976 | uint8_t table_id) | |
abe529af | 4977 | { |
7257b535 BP |
4978 | struct cls_rule *cls_rule; |
4979 | struct classifier *cls; | |
4980 | ||
9cdaaebe BP |
4981 | if (table_id >= N_TABLES) { |
4982 | return NULL; | |
4983 | } | |
4984 | ||
d0918789 | 4985 | cls = &ofproto->up.tables[table_id].cls; |
eadef313 | 4986 | if (flow->nw_frag & FLOW_NW_FRAG_ANY |
7257b535 BP |
4987 | && ofproto->up.frag_handling == OFPC_FRAG_NORMAL) { |
4988 | /* For OFPC_NORMAL frag_handling, we must pretend that transport ports | |
4989 | * are unavailable. */ | |
4990 | struct flow ofpc_normal_flow = *flow; | |
4991 | ofpc_normal_flow.tp_src = htons(0); | |
4992 | ofpc_normal_flow.tp_dst = htons(0); | |
4993 | cls_rule = classifier_lookup(cls, &ofpc_normal_flow); | |
4994 | } else { | |
4995 | cls_rule = classifier_lookup(cls, flow); | |
4996 | } | |
4997 | return rule_dpif_cast(rule_from_cls_rule(cls_rule)); | |
abe529af BP |
4998 | } |
4999 | ||
c376f9a3 IY |
5000 | static struct rule_dpif * |
5001 | rule_dpif_miss_rule(struct ofproto_dpif *ofproto, const struct flow *flow) | |
5002 | { | |
5003 | struct ofport_dpif *port; | |
5004 | ||
5005 | port = get_ofp_port(ofproto, flow->in_port); | |
5006 | if (!port) { | |
5007 | VLOG_WARN_RL(&rl, "packet-in on unknown port %"PRIu16, flow->in_port); | |
5008 | return ofproto->miss_rule; | |
5009 | } | |
5010 | ||
5011 | if (port->up.pp.config & OFPUTIL_PC_NO_PACKET_IN) { | |
5012 | return ofproto->no_packet_in_rule; | |
5013 | } | |
5014 | return ofproto->miss_rule; | |
5015 | } | |
5016 | ||
7ee20df1 BP |
5017 | static void |
5018 | complete_operation(struct rule_dpif *rule) | |
5019 | { | |
5020 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto); | |
5021 | ||
54a9cbc9 | 5022 | rule_invalidate(rule); |
7ee20df1 BP |
5023 | if (clogged) { |
5024 | struct dpif_completion *c = xmalloc(sizeof *c); | |
5025 | c->op = rule->up.pending; | |
5026 | list_push_back(&ofproto->completions, &c->list_node); | |
5027 | } else { | |
5028 | ofoperation_complete(rule->up.pending, 0); | |
5029 | } | |
5030 | } | |
5031 | ||
abe529af BP |
5032 | static struct rule * |
5033 | rule_alloc(void) | |
5034 | { | |
5035 | struct rule_dpif *rule = xmalloc(sizeof *rule); | |
5036 | return &rule->up; | |
5037 | } | |
5038 | ||
5039 | static void | |
5040 | rule_dealloc(struct rule *rule_) | |
5041 | { | |
5042 | struct rule_dpif *rule = rule_dpif_cast(rule_); | |
5043 | free(rule); | |
5044 | } | |
5045 | ||
90bf1e07 | 5046 | static enum ofperr |
abe529af BP |
5047 | rule_construct(struct rule *rule_) |
5048 | { | |
5049 | struct rule_dpif *rule = rule_dpif_cast(rule_); | |
5050 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto); | |
7ee20df1 | 5051 | struct rule_dpif *victim; |
54a9cbc9 | 5052 | uint8_t table_id; |
abe529af | 5053 | |
abe529af BP |
5054 | rule->packet_count = 0; |
5055 | rule->byte_count = 0; | |
abe529af | 5056 | |
7ee20df1 BP |
5057 | victim = rule_dpif_cast(ofoperation_get_victim(rule->up.pending)); |
5058 | if (victim && !list_is_empty(&victim->facets)) { | |
5059 | struct facet *facet; | |
5060 | ||
5061 | rule->facets = victim->facets; | |
5062 | list_moved(&rule->facets); | |
5063 | LIST_FOR_EACH (facet, list_node, &rule->facets) { | |
bbb5d219 EJ |
5064 | /* XXX: We're only clearing our local counters here. It's possible |
5065 | * that quite a few packets are unaccounted for in the datapath | |
5066 | * statistics. These will be accounted to the new rule instead of | |
5067 | * cleared as required. This could be fixed by clearing out the | |
5068 | * datapath statistics for this facet, but currently it doesn't | |
5069 | * seem worth it. */ | |
5070 | facet_reset_counters(facet); | |
7ee20df1 BP |
5071 | facet->rule = rule; |
5072 | } | |
5073 | } else { | |
5074 | /* Must avoid list_moved() in this case. */ | |
5075 | list_init(&rule->facets); | |
5076 | } | |
abe529af | 5077 | |
54a9cbc9 | 5078 | table_id = rule->up.table_id; |
5cb7a798 BP |
5079 | if (victim) { |
5080 | rule->tag = victim->tag; | |
5081 | } else if (table_id == 0) { | |
5082 | rule->tag = 0; | |
5083 | } else { | |
5084 | struct flow flow; | |
5085 | ||
5086 | miniflow_expand(&rule->up.cr.match.flow, &flow); | |
5087 | rule->tag = rule_calculate_tag(&flow, &rule->up.cr.match.mask, | |
5088 | ofproto->tables[table_id].basis); | |
5089 | } | |
54a9cbc9 | 5090 | |
7ee20df1 | 5091 | complete_operation(rule); |
abe529af BP |
5092 | return 0; |
5093 | } | |
5094 | ||
5095 | static void | |
5096 | rule_destruct(struct rule *rule_) | |
5097 | { | |
5098 | struct rule_dpif *rule = rule_dpif_cast(rule_); | |
abe529af BP |
5099 | struct facet *facet, *next_facet; |
5100 | ||
abe529af | 5101 | LIST_FOR_EACH_SAFE (facet, next_facet, list_node, &rule->facets) { |
15baa734 | 5102 | facet_revalidate(facet); |
abe529af | 5103 | } |
7ee20df1 BP |
5104 | |
5105 | complete_operation(rule); | |
abe529af BP |
5106 | } |
5107 | ||
5108 | static void | |
5109 | rule_get_stats(struct rule *rule_, uint64_t *packets, uint64_t *bytes) | |
5110 | { | |
5111 | struct rule_dpif *rule = rule_dpif_cast(rule_); | |
5112 | struct facet *facet; | |
5113 | ||
5114 | /* Start from historical data for 'rule' itself that are no longer tracked | |
5115 | * in facets. This counts, for example, facets that have expired. */ | |
5116 | *packets = rule->packet_count; | |
5117 | *bytes = rule->byte_count; | |
5118 | ||
5119 | /* Add any statistics that are tracked by facets. This includes | |
5120 | * statistical data recently updated by ofproto_update_stats() as well as | |
5121 | * stats for packets that were executed "by hand" via dpif_execute(). */ | |
5122 | LIST_FOR_EACH (facet, list_node, &rule->facets) { | |
5123 | *packets += facet->packet_count; | |
5124 | *bytes += facet->byte_count; | |
5125 | } | |
5126 | } | |
5127 | ||
90bf1e07 | 5128 | static enum ofperr |
59d0f2c8 BP |
5129 | rule_execute(struct rule *rule_, const struct flow *flow, |
5130 | struct ofpbuf *packet) | |
abe529af BP |
5131 | { |
5132 | struct rule_dpif *rule = rule_dpif_cast(rule_); | |
5133 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto); | |
050ac423 | 5134 | |
112bc5f4 | 5135 | struct dpif_flow_stats stats; |
050ac423 | 5136 | |
abe529af | 5137 | struct action_xlate_ctx ctx; |
050ac423 BP |
5138 | uint64_t odp_actions_stub[1024 / 8]; |
5139 | struct ofpbuf odp_actions; | |
abe529af | 5140 | |
a7752d4a | 5141 | dpif_flow_stats_extract(flow, packet, time_msec(), &stats); |
112bc5f4 BP |
5142 | rule_credit_stats(rule, &stats); |
5143 | ||
050ac423 | 5144 | ofpbuf_use_stub(&odp_actions, odp_actions_stub, sizeof odp_actions_stub); |
54834960 | 5145 | action_xlate_ctx_init(&ctx, ofproto, flow, flow->vlan_tci, |
112bc5f4 BP |
5146 | rule, stats.tcp_flags, packet); |
5147 | ctx.resubmit_stats = &stats; | |
f25d0cf3 | 5148 | xlate_actions(&ctx, rule->up.ofpacts, rule->up.ofpacts_len, &odp_actions); |
112bc5f4 BP |
5149 | |
5150 | execute_odp_actions(ofproto, flow, odp_actions.data, | |
5151 | odp_actions.size, packet); | |
5152 | ||
050ac423 | 5153 | ofpbuf_uninit(&odp_actions); |
5bf0e941 BP |
5154 | |
5155 | return 0; | |
abe529af BP |
5156 | } |
5157 | ||
7ee20df1 BP |
5158 | static void |
5159 | rule_modify_actions(struct rule *rule_) | |
abe529af BP |
5160 | { |
5161 | struct rule_dpif *rule = rule_dpif_cast(rule_); | |
7ee20df1 BP |
5162 | |
5163 | complete_operation(rule); | |
abe529af BP |
5164 | } |
5165 | \f | |
97d6520b | 5166 | /* Sends 'packet' out 'ofport'. |
52a90c29 | 5167 | * May modify 'packet'. |
abe529af BP |
5168 | * Returns 0 if successful, otherwise a positive errno value. */ |
5169 | static int | |
52a90c29 | 5170 | send_packet(const struct ofport_dpif *ofport, struct ofpbuf *packet) |
abe529af | 5171 | { |
97d6520b | 5172 | const struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto); |
80e5eed9 BP |
5173 | struct ofpbuf key, odp_actions; |
5174 | struct odputil_keybuf keybuf; | |
9b56fe13 | 5175 | uint32_t odp_port; |
80e5eed9 | 5176 | struct flow flow; |
abe529af BP |
5177 | int error; |
5178 | ||
0958f128 | 5179 | flow_extract(packet, 0, NULL, OFPP_LOCAL, &flow); |
52a90c29 BP |
5180 | odp_port = vsp_realdev_to_vlandev(ofproto, ofport->odp_port, |
5181 | flow.vlan_tci); | |
5182 | if (odp_port != ofport->odp_port) { | |
5183 | eth_pop_vlan(packet); | |
5184 | flow.vlan_tci = htons(0); | |
5185 | } | |
5186 | ||
80e5eed9 | 5187 | ofpbuf_use_stack(&key, &keybuf, sizeof keybuf); |
e1b1d06a JP |
5188 | odp_flow_key_from_flow(&key, &flow, |
5189 | ofp_port_to_odp_port(ofproto, flow.in_port)); | |
80e5eed9 | 5190 | |
abe529af | 5191 | ofpbuf_init(&odp_actions, 32); |
6ff686f2 PS |
5192 | compose_sflow_action(ofproto, &odp_actions, &flow, odp_port); |
5193 | ||
df2c07f4 | 5194 | nl_msg_put_u32(&odp_actions, OVS_ACTION_ATTR_OUTPUT, odp_port); |
acf60855 | 5195 | error = dpif_execute(ofproto->backer->dpif, |
80e5eed9 BP |
5196 | key.data, key.size, |
5197 | odp_actions.data, odp_actions.size, | |
abe529af BP |
5198 | packet); |
5199 | ofpbuf_uninit(&odp_actions); | |
5200 | ||
5201 | if (error) { | |
5202 | VLOG_WARN_RL(&rl, "%s: failed to send packet on port %"PRIu32" (%s)", | |
5203 | ofproto->up.name, odp_port, strerror(error)); | |
5204 | } | |
6527c598 | 5205 | ofproto_update_local_port_stats(ofport->up.ofproto, packet->size, 0); |
abe529af BP |
5206 | return error; |
5207 | } | |
5208 | \f | |
df2c07f4 | 5209 | /* OpenFlow to datapath action translation. */ |
abe529af | 5210 | |
f25d0cf3 BP |
5211 | static void do_xlate_actions(const struct ofpact *, size_t ofpacts_len, |
5212 | struct action_xlate_ctx *); | |
4cd78906 | 5213 | static void xlate_normal(struct action_xlate_ctx *); |
abe529af | 5214 | |
6a7e895f BP |
5215 | /* Composes an ODP action for a "slow path" action for 'flow' within 'ofproto'. |
5216 | * The action will state 'slow' as the reason that the action is in the slow | |
5217 | * path. (This is purely informational: it allows a human viewing "ovs-dpctl | |
5218 | * dump-flows" output to see why a flow is in the slow path.) | |
5219 | * | |
5220 | * The 'stub_size' bytes in 'stub' will be used to store the action. | |
5221 | * 'stub_size' must be large enough for the action. | |
5222 | * | |
5223 | * The action and its size will be stored in '*actionsp' and '*actions_lenp', | |
5224 | * respectively. */ | |
5225 | static void | |
5226 | compose_slow_path(const struct ofproto_dpif *ofproto, const struct flow *flow, | |
5227 | enum slow_path_reason slow, | |
5228 | uint64_t *stub, size_t stub_size, | |
5229 | const struct nlattr **actionsp, size_t *actions_lenp) | |
5230 | { | |
5231 | union user_action_cookie cookie; | |
5232 | struct ofpbuf buf; | |
5233 | ||
5234 | cookie.type = USER_ACTION_COOKIE_SLOW_PATH; | |
5235 | cookie.slow_path.unused = 0; | |
5236 | cookie.slow_path.reason = slow; | |
5237 | ||
5238 | ofpbuf_use_stack(&buf, stub, stub_size); | |
625b0720 | 5239 | if (slow & (SLOW_CFM | SLOW_LACP | SLOW_STP)) { |
acf60855 | 5240 | uint32_t pid = dpif_port_get_pid(ofproto->backer->dpif, UINT16_MAX); |
625b0720 BP |
5241 | odp_put_userspace_action(pid, &cookie, &buf); |
5242 | } else { | |
5243 | put_userspace_action(ofproto, &buf, flow, &cookie); | |
5244 | } | |
6a7e895f BP |
5245 | *actionsp = buf.data; |
5246 | *actions_lenp = buf.size; | |
5247 | } | |
5248 | ||
98403001 BP |
5249 | static size_t |
5250 | put_userspace_action(const struct ofproto_dpif *ofproto, | |
5251 | struct ofpbuf *odp_actions, | |
5252 | const struct flow *flow, | |
1673e0e4 | 5253 | const union user_action_cookie *cookie) |
98403001 | 5254 | { |
98403001 BP |
5255 | uint32_t pid; |
5256 | ||
acf60855 | 5257 | pid = dpif_port_get_pid(ofproto->backer->dpif, |
e1b1d06a | 5258 | ofp_port_to_odp_port(ofproto, flow->in_port)); |
98403001 | 5259 | |
39db78a0 | 5260 | return odp_put_userspace_action(pid, cookie, odp_actions); |
98403001 BP |
5261 | } |
5262 | ||
36fc5f18 BP |
5263 | static void |
5264 | compose_sflow_cookie(const struct ofproto_dpif *ofproto, | |
5265 | ovs_be16 vlan_tci, uint32_t odp_port, | |
1673e0e4 | 5266 | unsigned int n_outputs, union user_action_cookie *cookie) |
36fc5f18 BP |
5267 | { |
5268 | int ifindex; | |
5269 | ||
5270 | cookie->type = USER_ACTION_COOKIE_SFLOW; | |
1673e0e4 | 5271 | cookie->sflow.vlan_tci = vlan_tci; |
36fc5f18 BP |
5272 | |
5273 | /* See http://www.sflow.org/sflow_version_5.txt (search for "Input/output | |
5274 | * port information") for the interpretation of cookie->output. */ | |
5275 | switch (n_outputs) { | |
5276 | case 0: | |
5277 | /* 0x40000000 | 256 means "packet dropped for unknown reason". */ | |
1673e0e4 | 5278 | cookie->sflow.output = 0x40000000 | 256; |
36fc5f18 BP |
5279 | break; |
5280 | ||
5281 | case 1: | |
5282 | ifindex = dpif_sflow_odp_port_to_ifindex(ofproto->sflow, odp_port); | |
5283 | if (ifindex) { | |
1673e0e4 | 5284 | cookie->sflow.output = ifindex; |
36fc5f18 BP |
5285 | break; |
5286 | } | |
5287 | /* Fall through. */ | |
5288 | default: | |
5289 | /* 0x80000000 means "multiple output ports. */ | |
1673e0e4 | 5290 | cookie->sflow.output = 0x80000000 | n_outputs; |
36fc5f18 BP |
5291 | break; |
5292 | } | |
5293 | } | |
5294 | ||
6ff686f2 PS |
5295 | /* Compose SAMPLE action for sFlow. */ |
5296 | static size_t | |
5297 | compose_sflow_action(const struct ofproto_dpif *ofproto, | |
5298 | struct ofpbuf *odp_actions, | |
5299 | const struct flow *flow, | |
5300 | uint32_t odp_port) | |
5301 | { | |
6ff686f2 | 5302 | uint32_t probability; |
1673e0e4 | 5303 | union user_action_cookie cookie; |
6ff686f2 | 5304 | size_t sample_offset, actions_offset; |
36fc5f18 | 5305 | int cookie_offset; |
6ff686f2 PS |
5306 | |
5307 | if (!ofproto->sflow || flow->in_port == OFPP_NONE) { | |
5308 | return 0; | |
5309 | } | |
5310 | ||
6ff686f2 PS |
5311 | sample_offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_SAMPLE); |
5312 | ||
5313 | /* Number of packets out of UINT_MAX to sample. */ | |
5314 | probability = dpif_sflow_get_probability(ofproto->sflow); | |
5315 | nl_msg_put_u32(odp_actions, OVS_SAMPLE_ATTR_PROBABILITY, probability); | |
5316 | ||
5317 | actions_offset = nl_msg_start_nested(odp_actions, OVS_SAMPLE_ATTR_ACTIONS); | |
36fc5f18 BP |
5318 | compose_sflow_cookie(ofproto, htons(0), odp_port, |
5319 | odp_port == OVSP_NONE ? 0 : 1, &cookie); | |
98403001 | 5320 | cookie_offset = put_userspace_action(ofproto, odp_actions, flow, &cookie); |
6ff686f2 PS |
5321 | |
5322 | nl_msg_end_nested(odp_actions, actions_offset); | |
5323 | nl_msg_end_nested(odp_actions, sample_offset); | |
98403001 | 5324 | return cookie_offset; |
6ff686f2 PS |
5325 | } |
5326 | ||
5327 | /* SAMPLE action must be first action in any given list of actions. | |
5328 | * At this point we do not have all information required to build it. So try to | |
5329 | * build sample action as complete as possible. */ | |
5330 | static void | |
5331 | add_sflow_action(struct action_xlate_ctx *ctx) | |
5332 | { | |
5333 | ctx->user_cookie_offset = compose_sflow_action(ctx->ofproto, | |
5334 | ctx->odp_actions, | |
5335 | &ctx->flow, OVSP_NONE); | |
5336 | ctx->sflow_odp_port = 0; | |
5337 | ctx->sflow_n_outputs = 0; | |
5338 | } | |
5339 | ||
5340 | /* Fix SAMPLE action according to data collected while composing ODP actions. | |
5341 | * We need to fix SAMPLE actions OVS_SAMPLE_ATTR_ACTIONS attribute, i.e. nested | |
5342 | * USERSPACE action's user-cookie which is required for sflow. */ | |
5343 | static void | |
5344 | fix_sflow_action(struct action_xlate_ctx *ctx) | |
5345 | { | |
5346 | const struct flow *base = &ctx->base_flow; | |
1673e0e4 | 5347 | union user_action_cookie *cookie; |
6ff686f2 PS |
5348 | |
5349 | if (!ctx->user_cookie_offset) { | |
5350 | return; | |
5351 | } | |
5352 | ||
5353 | cookie = ofpbuf_at(ctx->odp_actions, ctx->user_cookie_offset, | |
36fc5f18 | 5354 | sizeof(*cookie)); |
6ff686f2 PS |
5355 | assert(cookie->type == USER_ACTION_COOKIE_SFLOW); |
5356 | ||
36fc5f18 BP |
5357 | compose_sflow_cookie(ctx->ofproto, base->vlan_tci, |
5358 | ctx->sflow_odp_port, ctx->sflow_n_outputs, cookie); | |
6ff686f2 PS |
5359 | } |
5360 | ||
6ff686f2 | 5361 | static void |
81b1afb1 EJ |
5362 | compose_output_action__(struct action_xlate_ctx *ctx, uint16_t ofp_port, |
5363 | bool check_stp) | |
6ff686f2 | 5364 | { |
d59906fb | 5365 | const struct ofport_dpif *ofport = get_ofp_port(ctx->ofproto, ofp_port); |
e1b1d06a | 5366 | uint32_t odp_port = ofp_port_to_odp_port(ctx->ofproto, ofp_port); |
52a90c29 | 5367 | ovs_be16 flow_vlan_tci = ctx->flow.vlan_tci; |
8b36f51e | 5368 | uint8_t flow_nw_tos = ctx->flow.nw_tos; |
52a90c29 | 5369 | uint16_t out_port; |
d59906fb | 5370 | |
81b1afb1 | 5371 | if (ofport) { |
8b36f51e EJ |
5372 | struct priority_to_dscp *pdscp; |
5373 | ||
3dd3eace BP |
5374 | if (ofport->up.pp.config & OFPUTIL_PC_NO_FWD) { |
5375 | xlate_report(ctx, "OFPPC_NO_FWD set, skipping output"); | |
5376 | return; | |
5377 | } else if (check_stp && !stp_forward_in_state(ofport->stp_state)) { | |
5378 | xlate_report(ctx, "STP not in forwarding state, skipping output"); | |
81b1afb1 EJ |
5379 | return; |
5380 | } | |
8b36f51e | 5381 | |
deedf7e7 | 5382 | pdscp = get_priority(ofport, ctx->flow.skb_priority); |
8b36f51e EJ |
5383 | if (pdscp) { |
5384 | ctx->flow.nw_tos &= ~IP_DSCP_MASK; | |
5385 | ctx->flow.nw_tos |= pdscp->dscp; | |
5386 | } | |
81b1afb1 EJ |
5387 | } else { |
5388 | /* We may not have an ofport record for this port, but it doesn't hurt | |
5389 | * to allow forwarding to it anyhow. Maybe such a port will appear | |
5390 | * later and we're pre-populating the flow table. */ | |
d59906fb EJ |
5391 | } |
5392 | ||
52a90c29 BP |
5393 | out_port = vsp_realdev_to_vlandev(ctx->ofproto, odp_port, |
5394 | ctx->flow.vlan_tci); | |
5395 | if (out_port != odp_port) { | |
5396 | ctx->flow.vlan_tci = htons(0); | |
5397 | } | |
5bbda0aa | 5398 | commit_odp_actions(&ctx->flow, &ctx->base_flow, ctx->odp_actions); |
52a90c29 BP |
5399 | nl_msg_put_u32(ctx->odp_actions, OVS_ACTION_ATTR_OUTPUT, out_port); |
5400 | ||
6ff686f2 PS |
5401 | ctx->sflow_odp_port = odp_port; |
5402 | ctx->sflow_n_outputs++; | |
81b1afb1 | 5403 | ctx->nf_output_iface = ofp_port; |
52a90c29 | 5404 | ctx->flow.vlan_tci = flow_vlan_tci; |
8b36f51e | 5405 | ctx->flow.nw_tos = flow_nw_tos; |
6ff686f2 PS |
5406 | } |
5407 | ||
abe529af | 5408 | static void |
5e48dc2b | 5409 | compose_output_action(struct action_xlate_ctx *ctx, uint16_t ofp_port) |
abe529af | 5410 | { |
81b1afb1 | 5411 | compose_output_action__(ctx, ofp_port, true); |
abe529af BP |
5412 | } |
5413 | ||
5414 | static void | |
29901626 | 5415 | xlate_table_action(struct action_xlate_ctx *ctx, |
1688c479 | 5416 | uint16_t in_port, uint8_t table_id, bool may_packet_in) |
abe529af BP |
5417 | { |
5418 | if (ctx->recurse < MAX_RESUBMIT_RECURSION) { | |
54a9cbc9 | 5419 | struct ofproto_dpif *ofproto = ctx->ofproto; |
abe529af BP |
5420 | struct rule_dpif *rule; |
5421 | uint16_t old_in_port; | |
29901626 BP |
5422 | uint8_t old_table_id; |
5423 | ||
5424 | old_table_id = ctx->table_id; | |
5425 | ctx->table_id = table_id; | |
abe529af | 5426 | |
54a9cbc9 | 5427 | /* Look up a flow with 'in_port' as the input port. */ |
abe529af BP |
5428 | old_in_port = ctx->flow.in_port; |
5429 | ctx->flow.in_port = in_port; | |
c57b2226 | 5430 | rule = rule_dpif_lookup__(ofproto, &ctx->flow, table_id); |
54a9cbc9 BP |
5431 | |
5432 | /* Tag the flow. */ | |
5433 | if (table_id > 0 && table_id < N_TABLES) { | |
5434 | struct table_dpif *table = &ofproto->tables[table_id]; | |
5435 | if (table->other_table) { | |
33780682 | 5436 | ctx->tags |= (rule && rule->tag |
54a9cbc9 BP |
5437 | ? rule->tag |
5438 | : rule_calculate_tag(&ctx->flow, | |
5cb7a798 | 5439 | &table->other_table->mask, |
54a9cbc9 BP |
5440 | table->basis)); |
5441 | } | |
5442 | } | |
5443 | ||
5444 | /* Restore the original input port. Otherwise OFPP_NORMAL and | |
5445 | * OFPP_IN_PORT will have surprising behavior. */ | |
abe529af BP |
5446 | ctx->flow.in_port = old_in_port; |
5447 | ||
5448 | if (ctx->resubmit_hook) { | |
5449 | ctx->resubmit_hook(ctx, rule); | |
5450 | } | |
5451 | ||
1688c479 IY |
5452 | if (rule == NULL && may_packet_in) { |
5453 | /* TODO:XXX | |
5454 | * check if table configuration flags | |
5455 | * OFPTC_TABLE_MISS_CONTROLLER, default. | |
5456 | * OFPTC_TABLE_MISS_CONTINUE, | |
5457 | * OFPTC_TABLE_MISS_DROP | |
5458 | * When OF1.0, OFPTC_TABLE_MISS_CONTINUE is used. What to do? | |
5459 | */ | |
5460 | rule = rule_dpif_miss_rule(ofproto, &ctx->flow); | |
5461 | } | |
5462 | ||
abe529af | 5463 | if (rule) { |
18b2a258 | 5464 | struct rule_dpif *old_rule = ctx->rule; |
54834960 | 5465 | |
112bc5f4 BP |
5466 | if (ctx->resubmit_stats) { |
5467 | rule_credit_stats(rule, ctx->resubmit_stats); | |
5468 | } | |
5469 | ||
abe529af | 5470 | ctx->recurse++; |
18b2a258 | 5471 | ctx->rule = rule; |
f25d0cf3 | 5472 | do_xlate_actions(rule->up.ofpacts, rule->up.ofpacts_len, ctx); |
18b2a258 | 5473 | ctx->rule = old_rule; |
abe529af BP |
5474 | ctx->recurse--; |
5475 | } | |
29901626 BP |
5476 | |
5477 | ctx->table_id = old_table_id; | |
abe529af BP |
5478 | } else { |
5479 | static struct vlog_rate_limit recurse_rl = VLOG_RATE_LIMIT_INIT(1, 1); | |
5480 | ||
29901626 | 5481 | VLOG_ERR_RL(&recurse_rl, "resubmit actions recursed over %d times", |
abe529af | 5482 | MAX_RESUBMIT_RECURSION); |
6a6455e5 | 5483 | ctx->max_resubmit_trigger = true; |
abe529af BP |
5484 | } |
5485 | } | |
5486 | ||
29901626 | 5487 | static void |
f25d0cf3 BP |
5488 | xlate_ofpact_resubmit(struct action_xlate_ctx *ctx, |
5489 | const struct ofpact_resubmit *resubmit) | |
29901626 BP |
5490 | { |
5491 | uint16_t in_port; | |
5492 | uint8_t table_id; | |
5493 | ||
f25d0cf3 BP |
5494 | in_port = resubmit->in_port; |
5495 | if (in_port == OFPP_IN_PORT) { | |
5496 | in_port = ctx->flow.in_port; | |
5497 | } | |
5498 | ||
5499 | table_id = resubmit->table_id; | |
5500 | if (table_id == 255) { | |
5501 | table_id = ctx->table_id; | |
5502 | } | |
29901626 | 5503 | |
1688c479 | 5504 | xlate_table_action(ctx, in_port, table_id, false); |
29901626 BP |
5505 | } |
5506 | ||
abe529af | 5507 | static void |
d59906fb | 5508 | flood_packets(struct action_xlate_ctx *ctx, bool all) |
abe529af BP |
5509 | { |
5510 | struct ofport_dpif *ofport; | |
5511 | ||
b3e9b2ed | 5512 | HMAP_FOR_EACH (ofport, up.hmap_node, &ctx->ofproto->up.ports) { |
abe529af | 5513 | uint16_t ofp_port = ofport->up.ofp_port; |
d59906fb EJ |
5514 | |
5515 | if (ofp_port == ctx->flow.in_port) { | |
5516 | continue; | |
5517 | } | |
5518 | ||
5e48dc2b | 5519 | if (all) { |
81b1afb1 | 5520 | compose_output_action__(ctx, ofp_port, false); |
9e1fd49b | 5521 | } else if (!(ofport->up.pp.config & OFPUTIL_PC_NO_FLOOD)) { |
5e48dc2b | 5522 | compose_output_action(ctx, ofp_port); |
abe529af BP |
5523 | } |
5524 | } | |
b3e9b2ed EJ |
5525 | |
5526 | ctx->nf_output_iface = NF_OUT_FLOOD; | |
abe529af BP |
5527 | } |
5528 | ||
6ff686f2 | 5529 | static void |
f0fd1a17 | 5530 | execute_controller_action(struct action_xlate_ctx *ctx, int len, |
a7349929 BP |
5531 | enum ofp_packet_in_reason reason, |
5532 | uint16_t controller_id) | |
6ff686f2 | 5533 | { |
999fba59 EJ |
5534 | struct ofputil_packet_in pin; |
5535 | struct ofpbuf *packet; | |
6ff686f2 | 5536 | |
6a7e895f | 5537 | ctx->slow |= SLOW_CONTROLLER; |
999fba59 EJ |
5538 | if (!ctx->packet) { |
5539 | return; | |
5540 | } | |
5541 | ||
5542 | packet = ofpbuf_clone(ctx->packet); | |
5543 | ||
5544 | if (packet->l2 && packet->l3) { | |
5545 | struct eth_header *eh; | |
5546 | ||
5547 | eth_pop_vlan(packet); | |
5548 | eh = packet->l2; | |
0104aba8 EJ |
5549 | |
5550 | /* If the Ethernet type is less than ETH_TYPE_MIN, it's likely an 802.2 | |
5551 | * LLC frame. Calculating the Ethernet type of these frames is more | |
5552 | * trouble than seems appropriate for a simple assertion. */ | |
5553 | assert(ntohs(eh->eth_type) < ETH_TYPE_MIN | |
5554 | || eh->eth_type == ctx->flow.dl_type); | |
5555 | ||
999fba59 EJ |
5556 | memcpy(eh->eth_src, ctx->flow.dl_src, sizeof eh->eth_src); |
5557 | memcpy(eh->eth_dst, ctx->flow.dl_dst, sizeof eh->eth_dst); | |
5558 | ||
5559 | if (ctx->flow.vlan_tci & htons(VLAN_CFI)) { | |
5560 | eth_push_vlan(packet, ctx->flow.vlan_tci); | |
5561 | } | |
5562 | ||
5563 | if (packet->l4) { | |
5564 | if (ctx->flow.dl_type == htons(ETH_TYPE_IP)) { | |
5565 | packet_set_ipv4(packet, ctx->flow.nw_src, ctx->flow.nw_dst, | |
5566 | ctx->flow.nw_tos, ctx->flow.nw_ttl); | |
5567 | } | |
5568 | ||
5569 | if (packet->l7) { | |
5570 | if (ctx->flow.nw_proto == IPPROTO_TCP) { | |
5571 | packet_set_tcp_port(packet, ctx->flow.tp_src, | |
5572 | ctx->flow.tp_dst); | |
5573 | } else if (ctx->flow.nw_proto == IPPROTO_UDP) { | |
5574 | packet_set_udp_port(packet, ctx->flow.tp_src, | |
5575 | ctx->flow.tp_dst); | |
5576 | } | |
5577 | } | |
5578 | } | |
5579 | } | |
5580 | ||
5581 | pin.packet = packet->data; | |
5582 | pin.packet_len = packet->size; | |
f0fd1a17 | 5583 | pin.reason = reason; |
a7349929 | 5584 | pin.controller_id = controller_id; |
54834960 | 5585 | pin.table_id = ctx->table_id; |
18b2a258 | 5586 | pin.cookie = ctx->rule ? ctx->rule->up.flow_cookie : 0; |
54834960 | 5587 | |
999fba59 | 5588 | pin.send_len = len; |
999fba59 EJ |
5589 | flow_get_metadata(&ctx->flow, &pin.fmd); |
5590 | ||
d8653c38 | 5591 | connmgr_send_packet_in(ctx->ofproto->up.connmgr, &pin); |
999fba59 | 5592 | ofpbuf_delete(packet); |
6ff686f2 PS |
5593 | } |
5594 | ||
f0fd1a17 | 5595 | static bool |
c2d967a5 | 5596 | compose_dec_ttl(struct action_xlate_ctx *ctx, struct ofpact_cnt_ids *ids) |
f0fd1a17 PS |
5597 | { |
5598 | if (ctx->flow.dl_type != htons(ETH_TYPE_IP) && | |
5599 | ctx->flow.dl_type != htons(ETH_TYPE_IPV6)) { | |
5600 | return false; | |
5601 | } | |
5602 | ||
5603 | if (ctx->flow.nw_ttl > 1) { | |
5604 | ctx->flow.nw_ttl--; | |
5605 | return false; | |
5606 | } else { | |
c2d967a5 MM |
5607 | size_t i; |
5608 | ||
5609 | for (i = 0; i < ids->n_controllers; i++) { | |
5610 | execute_controller_action(ctx, UINT16_MAX, OFPR_INVALID_TTL, | |
5611 | ids->cnt_ids[i]); | |
5612 | } | |
f0fd1a17 PS |
5613 | |
5614 | /* Stop processing for current table. */ | |
5615 | return true; | |
5616 | } | |
5617 | } | |
5618 | ||
abe529af | 5619 | static void |
f25d0cf3 | 5620 | xlate_output_action(struct action_xlate_ctx *ctx, |
1688c479 | 5621 | uint16_t port, uint16_t max_len, bool may_packet_in) |
abe529af BP |
5622 | { |
5623 | uint16_t prev_nf_output_iface = ctx->nf_output_iface; | |
5624 | ||
5625 | ctx->nf_output_iface = NF_OUT_DROP; | |
5626 | ||
5627 | switch (port) { | |
5628 | case OFPP_IN_PORT: | |
81b1afb1 | 5629 | compose_output_action(ctx, ctx->flow.in_port); |
abe529af BP |
5630 | break; |
5631 | case OFPP_TABLE: | |
1688c479 | 5632 | xlate_table_action(ctx, ctx->flow.in_port, 0, may_packet_in); |
abe529af BP |
5633 | break; |
5634 | case OFPP_NORMAL: | |
5635 | xlate_normal(ctx); | |
5636 | break; | |
5637 | case OFPP_FLOOD: | |
d59906fb | 5638 | flood_packets(ctx, false); |
abe529af BP |
5639 | break; |
5640 | case OFPP_ALL: | |
d59906fb | 5641 | flood_packets(ctx, true); |
abe529af BP |
5642 | break; |
5643 | case OFPP_CONTROLLER: | |
a7349929 | 5644 | execute_controller_action(ctx, max_len, OFPR_ACTION, 0); |
abe529af | 5645 | break; |
e81d2933 EJ |
5646 | case OFPP_NONE: |
5647 | break; | |
a0fbe94a | 5648 | case OFPP_LOCAL: |
abe529af BP |
5649 | default: |
5650 | if (port != ctx->flow.in_port) { | |
81b1afb1 | 5651 | compose_output_action(ctx, port); |
3dd3eace BP |
5652 | } else { |
5653 | xlate_report(ctx, "skipping output to input port"); | |
abe529af BP |
5654 | } |
5655 | break; | |
5656 | } | |
5657 | ||
5658 | if (prev_nf_output_iface == NF_OUT_FLOOD) { | |
5659 | ctx->nf_output_iface = NF_OUT_FLOOD; | |
5660 | } else if (ctx->nf_output_iface == NF_OUT_DROP) { | |
5661 | ctx->nf_output_iface = prev_nf_output_iface; | |
5662 | } else if (prev_nf_output_iface != NF_OUT_DROP && | |
5663 | ctx->nf_output_iface != NF_OUT_FLOOD) { | |
5664 | ctx->nf_output_iface = NF_OUT_MULTI; | |
5665 | } | |
5666 | } | |
5667 | ||
f694937d EJ |
5668 | static void |
5669 | xlate_output_reg_action(struct action_xlate_ctx *ctx, | |
f25d0cf3 | 5670 | const struct ofpact_output_reg *or) |
f694937d | 5671 | { |
f25d0cf3 BP |
5672 | uint64_t port = mf_get_subfield(&or->src, &ctx->flow); |
5673 | if (port <= UINT16_MAX) { | |
1688c479 | 5674 | xlate_output_action(ctx, port, or->max_len, false); |
f694937d EJ |
5675 | } |
5676 | } | |
5677 | ||
abe529af BP |
5678 | static void |
5679 | xlate_enqueue_action(struct action_xlate_ctx *ctx, | |
f25d0cf3 | 5680 | const struct ofpact_enqueue *enqueue) |
abe529af | 5681 | { |
f25d0cf3 BP |
5682 | uint16_t ofp_port = enqueue->port; |
5683 | uint32_t queue_id = enqueue->queue; | |
abff858b | 5684 | uint32_t flow_priority, priority; |
abe529af BP |
5685 | int error; |
5686 | ||
f25d0cf3 | 5687 | /* Translate queue to priority. */ |
acf60855 JP |
5688 | error = dpif_queue_to_priority(ctx->ofproto->backer->dpif, |
5689 | queue_id, &priority); | |
abe529af BP |
5690 | if (error) { |
5691 | /* Fall back to ordinary output action. */ | |
1688c479 | 5692 | xlate_output_action(ctx, enqueue->port, 0, false); |
abe529af BP |
5693 | return; |
5694 | } | |
5695 | ||
f25d0cf3 | 5696 | /* Check output port. */ |
abe529af BP |
5697 | if (ofp_port == OFPP_IN_PORT) { |
5698 | ofp_port = ctx->flow.in_port; | |
8ba855c1 BP |
5699 | } else if (ofp_port == ctx->flow.in_port) { |
5700 | return; | |
abe529af | 5701 | } |
abe529af | 5702 | |
df2c07f4 | 5703 | /* Add datapath actions. */ |
deedf7e7 BP |
5704 | flow_priority = ctx->flow.skb_priority; |
5705 | ctx->flow.skb_priority = priority; | |
81b1afb1 | 5706 | compose_output_action(ctx, ofp_port); |
deedf7e7 | 5707 | ctx->flow.skb_priority = flow_priority; |
abe529af BP |
5708 | |
5709 | /* Update NetFlow output port. */ | |
5710 | if (ctx->nf_output_iface == NF_OUT_DROP) { | |
4b23aebf | 5711 | ctx->nf_output_iface = ofp_port; |
abe529af BP |
5712 | } else if (ctx->nf_output_iface != NF_OUT_FLOOD) { |
5713 | ctx->nf_output_iface = NF_OUT_MULTI; | |
5714 | } | |
5715 | } | |
5716 | ||
5717 | static void | |
f25d0cf3 | 5718 | xlate_set_queue_action(struct action_xlate_ctx *ctx, uint32_t queue_id) |
abe529af | 5719 | { |
f25d0cf3 | 5720 | uint32_t skb_priority; |
abe529af | 5721 | |
acf60855 JP |
5722 | if (!dpif_queue_to_priority(ctx->ofproto->backer->dpif, |
5723 | queue_id, &skb_priority)) { | |
f25d0cf3 BP |
5724 | ctx->flow.skb_priority = skb_priority; |
5725 | } else { | |
5726 | /* Couldn't translate queue to a priority. Nothing to do. A warning | |
abe529af | 5727 | * has already been logged. */ |
abe529af | 5728 | } |
abe529af BP |
5729 | } |
5730 | ||
5731 | struct xlate_reg_state { | |
5732 | ovs_be16 vlan_tci; | |
5733 | ovs_be64 tun_id; | |
5734 | }; | |
5735 | ||
abe529af BP |
5736 | static void |
5737 | xlate_autopath(struct action_xlate_ctx *ctx, | |
f25d0cf3 | 5738 | const struct ofpact_autopath *ap) |
abe529af | 5739 | { |
f25d0cf3 | 5740 | uint16_t ofp_port = ap->port; |
abe529af BP |
5741 | struct ofport_dpif *port = get_ofp_port(ctx->ofproto, ofp_port); |
5742 | ||
5743 | if (!port || !port->bundle) { | |
5744 | ofp_port = OFPP_NONE; | |
5745 | } else if (port->bundle->bond) { | |
5746 | /* Autopath does not support VLAN hashing. */ | |
5747 | struct ofport_dpif *slave = bond_choose_output_slave( | |
dc155bff | 5748 | port->bundle->bond, &ctx->flow, 0, &ctx->tags); |
abe529af BP |
5749 | if (slave) { |
5750 | ofp_port = slave->up.ofp_port; | |
5751 | } | |
5752 | } | |
f25d0cf3 | 5753 | nxm_reg_load(&ap->dst, ofp_port, &ctx->flow); |
abe529af BP |
5754 | } |
5755 | ||
daff3353 EJ |
5756 | static bool |
5757 | slave_enabled_cb(uint16_t ofp_port, void *ofproto_) | |
5758 | { | |
5759 | struct ofproto_dpif *ofproto = ofproto_; | |
5760 | struct ofport_dpif *port; | |
5761 | ||
5762 | switch (ofp_port) { | |
5763 | case OFPP_IN_PORT: | |
5764 | case OFPP_TABLE: | |
5765 | case OFPP_NORMAL: | |
5766 | case OFPP_FLOOD: | |
5767 | case OFPP_ALL: | |
439e4d8c | 5768 | case OFPP_NONE: |
daff3353 EJ |
5769 | return true; |
5770 | case OFPP_CONTROLLER: /* Not supported by the bundle action. */ | |
5771 | return false; | |
5772 | default: | |
5773 | port = get_ofp_port(ofproto, ofp_port); | |
5774 | return port ? port->may_enable : false; | |
5775 | } | |
5776 | } | |
5777 | ||
f25d0cf3 BP |
5778 | static void |
5779 | xlate_bundle_action(struct action_xlate_ctx *ctx, | |
5780 | const struct ofpact_bundle *bundle) | |
5781 | { | |
5782 | uint16_t port; | |
5783 | ||
5784 | port = bundle_execute(bundle, &ctx->flow, slave_enabled_cb, ctx->ofproto); | |
5785 | if (bundle->dst.field) { | |
5786 | nxm_reg_load(&bundle->dst, port, &ctx->flow); | |
5787 | } else { | |
1688c479 | 5788 | xlate_output_action(ctx, port, 0, false); |
f25d0cf3 BP |
5789 | } |
5790 | } | |
5791 | ||
75a75043 BP |
5792 | static void |
5793 | xlate_learn_action(struct action_xlate_ctx *ctx, | |
f25d0cf3 | 5794 | const struct ofpact_learn *learn) |
75a75043 BP |
5795 | { |
5796 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 1); | |
5797 | struct ofputil_flow_mod fm; | |
f25d0cf3 BP |
5798 | uint64_t ofpacts_stub[1024 / 8]; |
5799 | struct ofpbuf ofpacts; | |
75a75043 BP |
5800 | int error; |
5801 | ||
f25d0cf3 BP |
5802 | ofpbuf_use_stack(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); |
5803 | learn_execute(learn, &ctx->flow, &fm, &ofpacts); | |
75a75043 BP |
5804 | |
5805 | error = ofproto_flow_mod(&ctx->ofproto->up, &fm); | |
5806 | if (error && !VLOG_DROP_WARN(&rl)) { | |
90bf1e07 BP |
5807 | VLOG_WARN("learning action failed to modify flow table (%s)", |
5808 | ofperr_get_name(error)); | |
75a75043 BP |
5809 | } |
5810 | ||
f25d0cf3 | 5811 | ofpbuf_uninit(&ofpacts); |
75a75043 BP |
5812 | } |
5813 | ||
0e553d9c BP |
5814 | /* Reduces '*timeout' to no more than 'max'. A value of zero in either case |
5815 | * means "infinite". */ | |
5816 | static void | |
5817 | reduce_timeout(uint16_t max, uint16_t *timeout) | |
5818 | { | |
5819 | if (max && (!*timeout || *timeout > max)) { | |
5820 | *timeout = max; | |
5821 | } | |
5822 | } | |
5823 | ||
5824 | static void | |
5825 | xlate_fin_timeout(struct action_xlate_ctx *ctx, | |
f25d0cf3 | 5826 | const struct ofpact_fin_timeout *oft) |
0e553d9c BP |
5827 | { |
5828 | if (ctx->tcp_flags & (TCP_FIN | TCP_RST) && ctx->rule) { | |
5829 | struct rule_dpif *rule = ctx->rule; | |
5830 | ||
f25d0cf3 BP |
5831 | reduce_timeout(oft->fin_idle_timeout, &rule->up.idle_timeout); |
5832 | reduce_timeout(oft->fin_hard_timeout, &rule->up.hard_timeout); | |
0e553d9c BP |
5833 | } |
5834 | } | |
5835 | ||
21f7563c JP |
5836 | static bool |
5837 | may_receive(const struct ofport_dpif *port, struct action_xlate_ctx *ctx) | |
5838 | { | |
9e1fd49b BP |
5839 | if (port->up.pp.config & (eth_addr_equals(ctx->flow.dl_dst, eth_addr_stp) |
5840 | ? OFPUTIL_PC_NO_RECV_STP | |
5841 | : OFPUTIL_PC_NO_RECV)) { | |
21f7563c JP |
5842 | return false; |
5843 | } | |
5844 | ||
5845 | /* Only drop packets here if both forwarding and learning are | |
5846 | * disabled. If just learning is enabled, we need to have | |
5847 | * OFPP_NORMAL and the learning action have a look at the packet | |
5848 | * before we can drop it. */ | |
5849 | if (!stp_forward_in_state(port->stp_state) | |
5850 | && !stp_learn_in_state(port->stp_state)) { | |
5851 | return false; | |
5852 | } | |
5853 | ||
5854 | return true; | |
5855 | } | |
5856 | ||
abe529af | 5857 | static void |
f25d0cf3 | 5858 | do_xlate_actions(const struct ofpact *ofpacts, size_t ofpacts_len, |
abe529af BP |
5859 | struct action_xlate_ctx *ctx) |
5860 | { | |
5861 | const struct ofport_dpif *port; | |
254750ce | 5862 | bool was_evictable = true; |
f25d0cf3 | 5863 | const struct ofpact *a; |
abe529af BP |
5864 | |
5865 | port = get_ofp_port(ctx->ofproto, ctx->flow.in_port); | |
21f7563c | 5866 | if (port && !may_receive(port, ctx)) { |
abe529af BP |
5867 | /* Drop this flow. */ |
5868 | return; | |
5869 | } | |
5870 | ||
254750ce BP |
5871 | if (ctx->rule) { |
5872 | /* Don't let the rule we're working on get evicted underneath us. */ | |
5873 | was_evictable = ctx->rule->up.evictable; | |
5874 | ctx->rule->up.evictable = false; | |
5875 | } | |
f25d0cf3 BP |
5876 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { |
5877 | struct ofpact_controller *controller; | |
4cceacb9 | 5878 | const struct ofpact_metadata *metadata; |
38f2e360 | 5879 | |
848e8809 EJ |
5880 | if (ctx->exit) { |
5881 | break; | |
5882 | } | |
5883 | ||
f25d0cf3 BP |
5884 | switch (a->type) { |
5885 | case OFPACT_OUTPUT: | |
5886 | xlate_output_action(ctx, ofpact_get_OUTPUT(a)->port, | |
1688c479 | 5887 | ofpact_get_OUTPUT(a)->max_len, true); |
f25d0cf3 BP |
5888 | break; |
5889 | ||
5890 | case OFPACT_CONTROLLER: | |
5891 | controller = ofpact_get_CONTROLLER(a); | |
5892 | execute_controller_action(ctx, controller->max_len, | |
5893 | controller->reason, | |
5894 | controller->controller_id); | |
5895 | break; | |
690a61c5 | 5896 | |
f25d0cf3 BP |
5897 | case OFPACT_ENQUEUE: |
5898 | xlate_enqueue_action(ctx, ofpact_get_ENQUEUE(a)); | |
abe529af BP |
5899 | break; |
5900 | ||
f25d0cf3 | 5901 | case OFPACT_SET_VLAN_VID: |
abe529af | 5902 | ctx->flow.vlan_tci &= ~htons(VLAN_VID_MASK); |
f25d0cf3 BP |
5903 | ctx->flow.vlan_tci |= (htons(ofpact_get_SET_VLAN_VID(a)->vlan_vid) |
5904 | | htons(VLAN_CFI)); | |
abe529af BP |
5905 | break; |
5906 | ||
f25d0cf3 | 5907 | case OFPACT_SET_VLAN_PCP: |
abe529af | 5908 | ctx->flow.vlan_tci &= ~htons(VLAN_PCP_MASK); |
f25d0cf3 BP |
5909 | ctx->flow.vlan_tci |= htons((ofpact_get_SET_VLAN_PCP(a)->vlan_pcp |
5910 | << VLAN_PCP_SHIFT) | |
5911 | | VLAN_CFI); | |
abe529af BP |
5912 | break; |
5913 | ||
f25d0cf3 | 5914 | case OFPACT_STRIP_VLAN: |
abe529af | 5915 | ctx->flow.vlan_tci = htons(0); |
abe529af BP |
5916 | break; |
5917 | ||
3e34fbdd IY |
5918 | case OFPACT_PUSH_VLAN: |
5919 | /* TODO:XXX 802.1AD(QinQ) */ | |
5920 | ctx->flow.vlan_tci = htons(VLAN_CFI); | |
5921 | break; | |
5922 | ||
f25d0cf3 BP |
5923 | case OFPACT_SET_ETH_SRC: |
5924 | memcpy(ctx->flow.dl_src, ofpact_get_SET_ETH_SRC(a)->mac, | |
5925 | ETH_ADDR_LEN); | |
abe529af BP |
5926 | break; |
5927 | ||
f25d0cf3 BP |
5928 | case OFPACT_SET_ETH_DST: |
5929 | memcpy(ctx->flow.dl_dst, ofpact_get_SET_ETH_DST(a)->mac, | |
5930 | ETH_ADDR_LEN); | |
abe529af BP |
5931 | break; |
5932 | ||
f25d0cf3 BP |
5933 | case OFPACT_SET_IPV4_SRC: |
5934 | ctx->flow.nw_src = ofpact_get_SET_IPV4_SRC(a)->ipv4; | |
abe529af BP |
5935 | break; |
5936 | ||
f25d0cf3 BP |
5937 | case OFPACT_SET_IPV4_DST: |
5938 | ctx->flow.nw_dst = ofpact_get_SET_IPV4_DST(a)->ipv4; | |
abe529af BP |
5939 | break; |
5940 | ||
f25d0cf3 | 5941 | case OFPACT_SET_IPV4_DSCP: |
c4f2731d PS |
5942 | /* OpenFlow 1.0 only supports IPv4. */ |
5943 | if (ctx->flow.dl_type == htons(ETH_TYPE_IP)) { | |
5944 | ctx->flow.nw_tos &= ~IP_DSCP_MASK; | |
f25d0cf3 | 5945 | ctx->flow.nw_tos |= ofpact_get_SET_IPV4_DSCP(a)->dscp; |
c4f2731d | 5946 | } |
abe529af BP |
5947 | break; |
5948 | ||
f25d0cf3 BP |
5949 | case OFPACT_SET_L4_SRC_PORT: |
5950 | ctx->flow.tp_src = htons(ofpact_get_SET_L4_SRC_PORT(a)->port); | |
abe529af BP |
5951 | break; |
5952 | ||
f25d0cf3 BP |
5953 | case OFPACT_SET_L4_DST_PORT: |
5954 | ctx->flow.tp_dst = htons(ofpact_get_SET_L4_DST_PORT(a)->port); | |
abe529af BP |
5955 | break; |
5956 | ||
f25d0cf3 BP |
5957 | case OFPACT_RESUBMIT: |
5958 | xlate_ofpact_resubmit(ctx, ofpact_get_RESUBMIT(a)); | |
38f2e360 BP |
5959 | break; |
5960 | ||
f25d0cf3 | 5961 | case OFPACT_SET_TUNNEL: |
296e07ac | 5962 | ctx->flow.tunnel.tun_id = htonll(ofpact_get_SET_TUNNEL(a)->tun_id); |
29901626 BP |
5963 | break; |
5964 | ||
f25d0cf3 BP |
5965 | case OFPACT_SET_QUEUE: |
5966 | xlate_set_queue_action(ctx, ofpact_get_SET_QUEUE(a)->queue_id); | |
abe529af BP |
5967 | break; |
5968 | ||
f25d0cf3 | 5969 | case OFPACT_POP_QUEUE: |
deedf7e7 | 5970 | ctx->flow.skb_priority = ctx->orig_skb_priority; |
38f2e360 BP |
5971 | break; |
5972 | ||
f25d0cf3 BP |
5973 | case OFPACT_REG_MOVE: |
5974 | nxm_execute_reg_move(ofpact_get_REG_MOVE(a), &ctx->flow); | |
38f2e360 BP |
5975 | break; |
5976 | ||
f25d0cf3 BP |
5977 | case OFPACT_REG_LOAD: |
5978 | nxm_execute_reg_load(ofpact_get_REG_LOAD(a), &ctx->flow); | |
38f2e360 BP |
5979 | break; |
5980 | ||
f25d0cf3 | 5981 | case OFPACT_DEC_TTL: |
c2d967a5 | 5982 | if (compose_dec_ttl(ctx, ofpact_get_DEC_TTL(a))) { |
f25d0cf3 BP |
5983 | goto out; |
5984 | } | |
38f2e360 BP |
5985 | break; |
5986 | ||
f25d0cf3 BP |
5987 | case OFPACT_NOTE: |
5988 | /* Nothing to do. */ | |
abe529af BP |
5989 | break; |
5990 | ||
f25d0cf3 BP |
5991 | case OFPACT_MULTIPATH: |
5992 | multipath_execute(ofpact_get_MULTIPATH(a), &ctx->flow); | |
abe529af | 5993 | break; |
daff3353 | 5994 | |
f25d0cf3 BP |
5995 | case OFPACT_AUTOPATH: |
5996 | xlate_autopath(ctx, ofpact_get_AUTOPATH(a)); | |
daff3353 | 5997 | break; |
a368bb53 | 5998 | |
f25d0cf3 | 5999 | case OFPACT_BUNDLE: |
a368bb53 | 6000 | ctx->ofproto->has_bundle_action = true; |
f25d0cf3 | 6001 | xlate_bundle_action(ctx, ofpact_get_BUNDLE(a)); |
a368bb53 | 6002 | break; |
f694937d | 6003 | |
f25d0cf3 BP |
6004 | case OFPACT_OUTPUT_REG: |
6005 | xlate_output_reg_action(ctx, ofpact_get_OUTPUT_REG(a)); | |
f694937d | 6006 | break; |
75a75043 | 6007 | |
f25d0cf3 | 6008 | case OFPACT_LEARN: |
75a75043 | 6009 | ctx->has_learn = true; |
3de9590b | 6010 | if (ctx->may_learn) { |
f25d0cf3 | 6011 | xlate_learn_action(ctx, ofpact_get_LEARN(a)); |
75a75043 BP |
6012 | } |
6013 | break; | |
848e8809 | 6014 | |
f25d0cf3 | 6015 | case OFPACT_EXIT: |
848e8809 EJ |
6016 | ctx->exit = true; |
6017 | break; | |
0e553d9c | 6018 | |
f25d0cf3 | 6019 | case OFPACT_FIN_TIMEOUT: |
0e553d9c | 6020 | ctx->has_fin_timeout = true; |
f25d0cf3 | 6021 | xlate_fin_timeout(ctx, ofpact_get_FIN_TIMEOUT(a)); |
a7349929 | 6022 | break; |
8dd54666 | 6023 | |
b19e8793 IY |
6024 | case OFPACT_CLEAR_ACTIONS: |
6025 | /* TODO:XXX | |
6026 | * Nothing to do because writa-actions is not supported for now. | |
6027 | * When writa-actions is supported, clear-actions also must | |
6028 | * be supported at the same time. | |
6029 | */ | |
6030 | break; | |
6031 | ||
4cceacb9 JS |
6032 | case OFPACT_WRITE_METADATA: |
6033 | metadata = ofpact_get_WRITE_METADATA(a); | |
6034 | ctx->flow.metadata &= ~metadata->mask; | |
6035 | ctx->flow.metadata |= metadata->metadata & metadata->mask; | |
6036 | break; | |
6037 | ||
8dd54666 IY |
6038 | case OFPACT_GOTO_TABLE: { |
6039 | /* TODO:XXX remove recursion */ | |
6040 | /* It is assumed that goto-table is last action */ | |
6041 | struct ofpact_goto_table *ogt = ofpact_get_GOTO_TABLE(a); | |
6042 | assert(ctx->table_id < ogt->table_id); | |
6043 | xlate_table_action(ctx, ctx->flow.in_port, ogt->table_id, true); | |
6044 | break; | |
6045 | } | |
abe529af BP |
6046 | } |
6047 | } | |
21f7563c | 6048 | |
f0fd1a17 | 6049 | out: |
21f7563c JP |
6050 | /* We've let OFPP_NORMAL and the learning action look at the packet, |
6051 | * so drop it now if forwarding is disabled. */ | |
6052 | if (port && !stp_forward_in_state(port->stp_state)) { | |
6053 | ofpbuf_clear(ctx->odp_actions); | |
6054 | add_sflow_action(ctx); | |
6055 | } | |
254750ce BP |
6056 | if (ctx->rule) { |
6057 | ctx->rule->up.evictable = was_evictable; | |
6058 | } | |
abe529af BP |
6059 | } |
6060 | ||
6061 | static void | |
6062 | action_xlate_ctx_init(struct action_xlate_ctx *ctx, | |
6063 | struct ofproto_dpif *ofproto, const struct flow *flow, | |
18b2a258 | 6064 | ovs_be16 initial_tci, struct rule_dpif *rule, |
0e553d9c | 6065 | uint8_t tcp_flags, const struct ofpbuf *packet) |
abe529af BP |
6066 | { |
6067 | ctx->ofproto = ofproto; | |
6068 | ctx->flow = *flow; | |
e84173dc | 6069 | ctx->base_flow = ctx->flow; |
296e07ac | 6070 | memset(&ctx->base_flow.tunnel, 0, sizeof ctx->base_flow.tunnel); |
e84173dc | 6071 | ctx->base_flow.vlan_tci = initial_tci; |
18b2a258 | 6072 | ctx->rule = rule; |
abe529af | 6073 | ctx->packet = packet; |
3de9590b | 6074 | ctx->may_learn = packet != NULL; |
0e553d9c | 6075 | ctx->tcp_flags = tcp_flags; |
abe529af | 6076 | ctx->resubmit_hook = NULL; |
479df176 | 6077 | ctx->report_hook = NULL; |
112bc5f4 | 6078 | ctx->resubmit_stats = NULL; |
abe529af BP |
6079 | } |
6080 | ||
f25d0cf3 BP |
6081 | /* Translates the 'ofpacts_len' bytes of "struct ofpacts" starting at 'ofpacts' |
6082 | * into datapath actions in 'odp_actions', using 'ctx'. */ | |
050ac423 | 6083 | static void |
abe529af | 6084 | xlate_actions(struct action_xlate_ctx *ctx, |
f25d0cf3 | 6085 | const struct ofpact *ofpacts, size_t ofpacts_len, |
050ac423 | 6086 | struct ofpbuf *odp_actions) |
abe529af | 6087 | { |
43d50bc8 BP |
6088 | /* Normally false. Set to true if we ever hit MAX_RESUBMIT_RECURSION, so |
6089 | * that in the future we always keep a copy of the original flow for | |
6090 | * tracing purposes. */ | |
6091 | static bool hit_resubmit_limit; | |
6092 | ||
6a7e895f BP |
6093 | enum slow_path_reason special; |
6094 | ||
abe529af BP |
6095 | COVERAGE_INC(ofproto_dpif_xlate); |
6096 | ||
050ac423 BP |
6097 | ofpbuf_clear(odp_actions); |
6098 | ofpbuf_reserve(odp_actions, NL_A_U32_SIZE); | |
6099 | ||
6100 | ctx->odp_actions = odp_actions; | |
97e42c92 | 6101 | ctx->tags = 0; |
6a7e895f | 6102 | ctx->slow = 0; |
97e42c92 BP |
6103 | ctx->has_learn = false; |
6104 | ctx->has_normal = false; | |
0e553d9c | 6105 | ctx->has_fin_timeout = false; |
97e42c92 | 6106 | ctx->nf_output_iface = NF_OUT_DROP; |
9d24de3b | 6107 | ctx->mirrors = 0; |
97e42c92 | 6108 | ctx->recurse = 0; |
6a6455e5 | 6109 | ctx->max_resubmit_trigger = false; |
deedf7e7 | 6110 | ctx->orig_skb_priority = ctx->flow.skb_priority; |
97e42c92 | 6111 | ctx->table_id = 0; |
848e8809 | 6112 | ctx->exit = false; |
7257b535 | 6113 | |
43d50bc8 | 6114 | if (ctx->ofproto->has_mirrors || hit_resubmit_limit) { |
ccb7c863 BP |
6115 | /* Do this conditionally because the copy is expensive enough that it |
6116 | * shows up in profiles. | |
6117 | * | |
6118 | * We keep orig_flow in 'ctx' only because I couldn't make GCC 4.4 | |
6119 | * believe that I wasn't using it without initializing it if I kept it | |
6120 | * in a local variable. */ | |
6121 | ctx->orig_flow = ctx->flow; | |
6122 | } | |
6123 | ||
eadef313 | 6124 | if (ctx->flow.nw_frag & FLOW_NW_FRAG_ANY) { |
7257b535 BP |
6125 | switch (ctx->ofproto->up.frag_handling) { |
6126 | case OFPC_FRAG_NORMAL: | |
6127 | /* We must pretend that transport ports are unavailable. */ | |
97e42c92 BP |
6128 | ctx->flow.tp_src = ctx->base_flow.tp_src = htons(0); |
6129 | ctx->flow.tp_dst = ctx->base_flow.tp_dst = htons(0); | |
7257b535 BP |
6130 | break; |
6131 | ||
6132 | case OFPC_FRAG_DROP: | |
050ac423 | 6133 | return; |
7257b535 BP |
6134 | |
6135 | case OFPC_FRAG_REASM: | |
6136 | NOT_REACHED(); | |
6137 | ||
6138 | case OFPC_FRAG_NX_MATCH: | |
6139 | /* Nothing to do. */ | |
6140 | break; | |
f0fd1a17 PS |
6141 | |
6142 | case OFPC_INVALID_TTL_TO_CONTROLLER: | |
6143 | NOT_REACHED(); | |
7257b535 BP |
6144 | } |
6145 | } | |
6146 | ||
6a7e895f BP |
6147 | special = process_special(ctx->ofproto, &ctx->flow, ctx->packet); |
6148 | if (special) { | |
6149 | ctx->slow |= special; | |
abe529af | 6150 | } else { |
6a6455e5 | 6151 | static struct vlog_rate_limit trace_rl = VLOG_RATE_LIMIT_INIT(1, 1); |
6a6455e5 EJ |
6152 | ovs_be16 initial_tci = ctx->base_flow.vlan_tci; |
6153 | ||
6ff686f2 | 6154 | add_sflow_action(ctx); |
f25d0cf3 | 6155 | do_xlate_actions(ofpacts, ofpacts_len, ctx); |
abe529af | 6156 | |
43d50bc8 BP |
6157 | if (ctx->max_resubmit_trigger && !ctx->resubmit_hook) { |
6158 | if (!hit_resubmit_limit) { | |
6159 | /* We didn't record the original flow. Make sure we do from | |
6160 | * now on. */ | |
6161 | hit_resubmit_limit = true; | |
6162 | } else if (!VLOG_DROP_ERR(&trace_rl)) { | |
6163 | struct ds ds = DS_EMPTY_INITIALIZER; | |
6164 | ||
6165 | ofproto_trace(ctx->ofproto, &ctx->orig_flow, ctx->packet, | |
6166 | initial_tci, &ds); | |
6167 | VLOG_ERR("Trace triggered by excessive resubmit " | |
6168 | "recursion:\n%s", ds_cstr(&ds)); | |
6169 | ds_destroy(&ds); | |
6170 | } | |
6a6455e5 EJ |
6171 | } |
6172 | ||
b6848f13 BP |
6173 | if (!connmgr_may_set_up_flow(ctx->ofproto->up.connmgr, &ctx->flow, |
6174 | ctx->odp_actions->data, | |
6175 | ctx->odp_actions->size)) { | |
6a7e895f | 6176 | ctx->slow |= SLOW_IN_BAND; |
b6848f13 BP |
6177 | if (ctx->packet |
6178 | && connmgr_msg_in_hook(ctx->ofproto->up.connmgr, &ctx->flow, | |
6179 | ctx->packet)) { | |
5e48dc2b | 6180 | compose_output_action(ctx, OFPP_LOCAL); |
b6848f13 BP |
6181 | } |
6182 | } | |
ccb7c863 BP |
6183 | if (ctx->ofproto->has_mirrors) { |
6184 | add_mirror_actions(ctx, &ctx->orig_flow); | |
6185 | } | |
a7c4eaf6 | 6186 | fix_sflow_action(ctx); |
abe529af | 6187 | } |
050ac423 BP |
6188 | } |
6189 | ||
f25d0cf3 BP |
6190 | /* Translates the 'ofpacts_len' bytes of "struct ofpact"s starting at 'ofpacts' |
6191 | * into datapath actions, using 'ctx', and discards the datapath actions. */ | |
050ac423 BP |
6192 | static void |
6193 | xlate_actions_for_side_effects(struct action_xlate_ctx *ctx, | |
f25d0cf3 BP |
6194 | const struct ofpact *ofpacts, |
6195 | size_t ofpacts_len) | |
050ac423 BP |
6196 | { |
6197 | uint64_t odp_actions_stub[1024 / 8]; | |
6198 | struct ofpbuf odp_actions; | |
abe529af | 6199 | |
050ac423 | 6200 | ofpbuf_use_stub(&odp_actions, odp_actions_stub, sizeof odp_actions_stub); |
f25d0cf3 | 6201 | xlate_actions(ctx, ofpacts, ofpacts_len, &odp_actions); |
050ac423 | 6202 | ofpbuf_uninit(&odp_actions); |
abe529af | 6203 | } |
479df176 BP |
6204 | |
6205 | static void | |
6206 | xlate_report(struct action_xlate_ctx *ctx, const char *s) | |
6207 | { | |
6208 | if (ctx->report_hook) { | |
6209 | ctx->report_hook(ctx, s); | |
6210 | } | |
6211 | } | |
abe529af BP |
6212 | \f |
6213 | /* OFPP_NORMAL implementation. */ | |
6214 | ||
abe529af BP |
6215 | static struct ofport_dpif *ofbundle_get_a_port(const struct ofbundle *); |
6216 | ||
ecac4ebf BP |
6217 | /* Given 'vid', the VID obtained from the 802.1Q header that was received as |
6218 | * part of a packet (specify 0 if there was no 802.1Q header), and 'in_bundle', | |
6219 | * the bundle on which the packet was received, returns the VLAN to which the | |
6220 | * packet belongs. | |
6221 | * | |
6222 | * Both 'vid' and the return value are in the range 0...4095. */ | |
6223 | static uint16_t | |
6224 | input_vid_to_vlan(const struct ofbundle *in_bundle, uint16_t vid) | |
6225 | { | |
6226 | switch (in_bundle->vlan_mode) { | |
6227 | case PORT_VLAN_ACCESS: | |
6228 | return in_bundle->vlan; | |
6229 | break; | |
6230 | ||
6231 | case PORT_VLAN_TRUNK: | |
6232 | return vid; | |
6233 | ||
6234 | case PORT_VLAN_NATIVE_UNTAGGED: | |
6235 | case PORT_VLAN_NATIVE_TAGGED: | |
6236 | return vid ? vid : in_bundle->vlan; | |
6237 | ||
6238 | default: | |
6239 | NOT_REACHED(); | |
6240 | } | |
6241 | } | |
6242 | ||
5da5ec37 BP |
6243 | /* Checks whether a packet with the given 'vid' may ingress on 'in_bundle'. |
6244 | * If so, returns true. Otherwise, returns false and, if 'warn' is true, logs | |
6245 | * a warning. | |
6246 | * | |
6247 | * 'vid' should be the VID obtained from the 802.1Q header that was received as | |
6248 | * part of a packet (specify 0 if there was no 802.1Q header), in the range | |
6249 | * 0...4095. */ | |
6250 | static bool | |
6251 | input_vid_is_valid(uint16_t vid, struct ofbundle *in_bundle, bool warn) | |
6252 | { | |
33158a18 JP |
6253 | /* Allow any VID on the OFPP_NONE port. */ |
6254 | if (in_bundle == &ofpp_none_bundle) { | |
6255 | return true; | |
6256 | } | |
6257 | ||
5da5ec37 BP |
6258 | switch (in_bundle->vlan_mode) { |
6259 | case PORT_VLAN_ACCESS: | |
6260 | if (vid) { | |
6261 | if (warn) { | |
6262 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
6263 | VLOG_WARN_RL(&rl, "bridge %s: dropping VLAN %"PRIu16" tagged " | |
6264 | "packet received on port %s configured as VLAN " | |
6265 | "%"PRIu16" access port", | |
6266 | in_bundle->ofproto->up.name, vid, | |
6267 | in_bundle->name, in_bundle->vlan); | |
6268 | } | |
6269 | return false; | |
6270 | } | |
6271 | return true; | |
6272 | ||
6273 | case PORT_VLAN_NATIVE_UNTAGGED: | |
6274 | case PORT_VLAN_NATIVE_TAGGED: | |
6275 | if (!vid) { | |
6276 | /* Port must always carry its native VLAN. */ | |
6277 | return true; | |
6278 | } | |
6279 | /* Fall through. */ | |
6280 | case PORT_VLAN_TRUNK: | |
6281 | if (!ofbundle_includes_vlan(in_bundle, vid)) { | |
6282 | if (warn) { | |
6283 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
6284 | VLOG_WARN_RL(&rl, "bridge %s: dropping VLAN %"PRIu16" packet " | |
6285 | "received on port %s not configured for trunking " | |
6286 | "VLAN %"PRIu16, | |
6287 | in_bundle->ofproto->up.name, vid, | |
6288 | in_bundle->name, vid); | |
6289 | } | |
6290 | return false; | |
6291 | } | |
6292 | return true; | |
6293 | ||
6294 | default: | |
6295 | NOT_REACHED(); | |
6296 | } | |
6297 | ||
6298 | } | |
6299 | ||
ecac4ebf BP |
6300 | /* Given 'vlan', the VLAN that a packet belongs to, and |
6301 | * 'out_bundle', a bundle on which the packet is to be output, returns the VID | |
6302 | * that should be included in the 802.1Q header. (If the return value is 0, | |
6303 | * then the 802.1Q header should only be included in the packet if there is a | |
6304 | * nonzero PCP.) | |
6305 | * | |
6306 | * Both 'vlan' and the return value are in the range 0...4095. */ | |
6307 | static uint16_t | |
6308 | output_vlan_to_vid(const struct ofbundle *out_bundle, uint16_t vlan) | |
6309 | { | |
6310 | switch (out_bundle->vlan_mode) { | |
6311 | case PORT_VLAN_ACCESS: | |
6312 | return 0; | |
6313 | ||
6314 | case PORT_VLAN_TRUNK: | |
6315 | case PORT_VLAN_NATIVE_TAGGED: | |
6316 | return vlan; | |
6317 | ||
6318 | case PORT_VLAN_NATIVE_UNTAGGED: | |
6319 | return vlan == out_bundle->vlan ? 0 : vlan; | |
6320 | ||
6321 | default: | |
6322 | NOT_REACHED(); | |
6323 | } | |
6324 | } | |
6325 | ||
395e68ce BP |
6326 | static void |
6327 | output_normal(struct action_xlate_ctx *ctx, const struct ofbundle *out_bundle, | |
6328 | uint16_t vlan) | |
abe529af | 6329 | { |
395e68ce BP |
6330 | struct ofport_dpif *port; |
6331 | uint16_t vid; | |
81b1afb1 | 6332 | ovs_be16 tci, old_tci; |
ecac4ebf | 6333 | |
395e68ce BP |
6334 | vid = output_vlan_to_vid(out_bundle, vlan); |
6335 | if (!out_bundle->bond) { | |
6336 | port = ofbundle_get_a_port(out_bundle); | |
6337 | } else { | |
6338 | port = bond_choose_output_slave(out_bundle->bond, &ctx->flow, | |
6339 | vid, &ctx->tags); | |
6340 | if (!port) { | |
6341 | /* No slaves enabled, so drop packet. */ | |
6342 | return; | |
6343 | } | |
6344 | } | |
abe529af | 6345 | |
81b1afb1 | 6346 | old_tci = ctx->flow.vlan_tci; |
5e9ceccd BP |
6347 | tci = htons(vid); |
6348 | if (tci || out_bundle->use_priority_tags) { | |
6349 | tci |= ctx->flow.vlan_tci & htons(VLAN_PCP_MASK); | |
6350 | if (tci) { | |
6351 | tci |= htons(VLAN_CFI); | |
6352 | } | |
395e68ce | 6353 | } |
81b1afb1 | 6354 | ctx->flow.vlan_tci = tci; |
395e68ce | 6355 | |
5e48dc2b | 6356 | compose_output_action(ctx, port->up.ofp_port); |
81b1afb1 | 6357 | ctx->flow.vlan_tci = old_tci; |
abe529af BP |
6358 | } |
6359 | ||
6360 | static int | |
6361 | mirror_mask_ffs(mirror_mask_t mask) | |
6362 | { | |
6363 | BUILD_ASSERT_DECL(sizeof(unsigned int) >= sizeof(mask)); | |
6364 | return ffs(mask); | |
6365 | } | |
6366 | ||
abe529af BP |
6367 | static bool |
6368 | ofbundle_trunks_vlan(const struct ofbundle *bundle, uint16_t vlan) | |
6369 | { | |
ecac4ebf | 6370 | return (bundle->vlan_mode != PORT_VLAN_ACCESS |
fc3d7408 | 6371 | && (!bundle->trunks || bitmap_is_set(bundle->trunks, vlan))); |
abe529af BP |
6372 | } |
6373 | ||
6374 | static bool | |
6375 | ofbundle_includes_vlan(const struct ofbundle *bundle, uint16_t vlan) | |
6376 | { | |
6377 | return vlan == bundle->vlan || ofbundle_trunks_vlan(bundle, vlan); | |
6378 | } | |
6379 | ||
6380 | /* Returns an arbitrary interface within 'bundle'. */ | |
6381 | static struct ofport_dpif * | |
6382 | ofbundle_get_a_port(const struct ofbundle *bundle) | |
6383 | { | |
6384 | return CONTAINER_OF(list_front(&bundle->ports), | |
6385 | struct ofport_dpif, bundle_node); | |
6386 | } | |
6387 | ||
abe529af BP |
6388 | static bool |
6389 | vlan_is_mirrored(const struct ofmirror *m, int vlan) | |
6390 | { | |
fc3d7408 | 6391 | return !m->vlans || bitmap_is_set(m->vlans, vlan); |
abe529af BP |
6392 | } |
6393 | ||
6394 | static void | |
c06bba01 | 6395 | add_mirror_actions(struct action_xlate_ctx *ctx, const struct flow *orig_flow) |
abe529af BP |
6396 | { |
6397 | struct ofproto_dpif *ofproto = ctx->ofproto; | |
6398 | mirror_mask_t mirrors; | |
c06bba01 JP |
6399 | struct ofbundle *in_bundle; |
6400 | uint16_t vlan; | |
6401 | uint16_t vid; | |
6402 | const struct nlattr *a; | |
6403 | size_t left; | |
6404 | ||
3581c12c | 6405 | in_bundle = lookup_input_bundle(ctx->ofproto, orig_flow->in_port, |
70c2fd56 | 6406 | ctx->packet != NULL, NULL); |
3581c12c | 6407 | if (!in_bundle) { |
c06bba01 JP |
6408 | return; |
6409 | } | |
c06bba01 JP |
6410 | mirrors = in_bundle->src_mirrors; |
6411 | ||
6412 | /* Drop frames on bundles reserved for mirroring. */ | |
6413 | if (in_bundle->mirror_out) { | |
6414 | if (ctx->packet != NULL) { | |
6415 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
6416 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet received on port " | |
6417 | "%s, which is reserved exclusively for mirroring", | |
6418 | ctx->ofproto->up.name, in_bundle->name); | |
6419 | } | |
6420 | return; | |
6421 | } | |
6422 | ||
6423 | /* Check VLAN. */ | |
6424 | vid = vlan_tci_to_vid(orig_flow->vlan_tci); | |
6425 | if (!input_vid_is_valid(vid, in_bundle, ctx->packet != NULL)) { | |
6426 | return; | |
6427 | } | |
6428 | vlan = input_vid_to_vlan(in_bundle, vid); | |
6429 | ||
6430 | /* Look at the output ports to check for destination selections. */ | |
6431 | ||
6432 | NL_ATTR_FOR_EACH (a, left, ctx->odp_actions->data, | |
6433 | ctx->odp_actions->size) { | |
6434 | enum ovs_action_attr type = nl_attr_type(a); | |
6435 | struct ofport_dpif *ofport; | |
6436 | ||
6437 | if (type != OVS_ACTION_ATTR_OUTPUT) { | |
6438 | continue; | |
6439 | } | |
6440 | ||
6441 | ofport = get_odp_port(ofproto, nl_attr_get_u32(a)); | |
521472bc BP |
6442 | if (ofport && ofport->bundle) { |
6443 | mirrors |= ofport->bundle->dst_mirrors; | |
6444 | } | |
c06bba01 | 6445 | } |
abe529af BP |
6446 | |
6447 | if (!mirrors) { | |
6448 | return; | |
6449 | } | |
6450 | ||
c06bba01 JP |
6451 | /* Restore the original packet before adding the mirror actions. */ |
6452 | ctx->flow = *orig_flow; | |
6453 | ||
9ba15e2a BP |
6454 | while (mirrors) { |
6455 | struct ofmirror *m; | |
9ba15e2a BP |
6456 | |
6457 | m = ofproto->mirrors[mirror_mask_ffs(mirrors) - 1]; | |
6458 | ||
6459 | if (!vlan_is_mirrored(m, vlan)) { | |
8472a3ce | 6460 | mirrors = zero_rightmost_1bit(mirrors); |
9ba15e2a BP |
6461 | continue; |
6462 | } | |
6463 | ||
6464 | mirrors &= ~m->dup_mirrors; | |
9d24de3b | 6465 | ctx->mirrors |= m->dup_mirrors; |
9ba15e2a | 6466 | if (m->out) { |
395e68ce | 6467 | output_normal(ctx, m->out, vlan); |
614ec445 EJ |
6468 | } else if (vlan != m->out_vlan |
6469 | && !eth_addr_is_reserved(orig_flow->dl_dst)) { | |
9ba15e2a BP |
6470 | struct ofbundle *bundle; |
6471 | ||
6472 | HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) { | |
6473 | if (ofbundle_includes_vlan(bundle, m->out_vlan) | |
395e68ce BP |
6474 | && !bundle->mirror_out) { |
6475 | output_normal(ctx, bundle, m->out_vlan); | |
abe529af BP |
6476 | } |
6477 | } | |
6478 | } | |
abe529af BP |
6479 | } |
6480 | } | |
6481 | ||
9d24de3b JP |
6482 | static void |
6483 | update_mirror_stats(struct ofproto_dpif *ofproto, mirror_mask_t mirrors, | |
6484 | uint64_t packets, uint64_t bytes) | |
6485 | { | |
6486 | if (!mirrors) { | |
6487 | return; | |
6488 | } | |
6489 | ||
8472a3ce | 6490 | for (; mirrors; mirrors = zero_rightmost_1bit(mirrors)) { |
9d24de3b JP |
6491 | struct ofmirror *m; |
6492 | ||
6493 | m = ofproto->mirrors[mirror_mask_ffs(mirrors) - 1]; | |
6494 | ||
6495 | if (!m) { | |
6496 | /* In normal circumstances 'm' will not be NULL. However, | |
6497 | * if mirrors are reconfigured, we can temporarily get out | |
6498 | * of sync in facet_revalidate(). We could "correct" the | |
6499 | * mirror list before reaching here, but doing that would | |
6500 | * not properly account the traffic stats we've currently | |
6501 | * accumulated for previous mirror configuration. */ | |
6502 | continue; | |
6503 | } | |
6504 | ||
6505 | m->packet_count += packets; | |
6506 | m->byte_count += bytes; | |
6507 | } | |
6508 | } | |
6509 | ||
abe529af BP |
6510 | /* A VM broadcasts a gratuitous ARP to indicate that it has resumed after |
6511 | * migration. Older Citrix-patched Linux DomU used gratuitous ARP replies to | |
6512 | * indicate this; newer upstream kernels use gratuitous ARP requests. */ | |
6513 | static bool | |
6514 | is_gratuitous_arp(const struct flow *flow) | |
6515 | { | |
6516 | return (flow->dl_type == htons(ETH_TYPE_ARP) | |
6517 | && eth_addr_is_broadcast(flow->dl_dst) | |
6518 | && (flow->nw_proto == ARP_OP_REPLY | |
6519 | || (flow->nw_proto == ARP_OP_REQUEST | |
6520 | && flow->nw_src == flow->nw_dst))); | |
6521 | } | |
6522 | ||
6523 | static void | |
6524 | update_learning_table(struct ofproto_dpif *ofproto, | |
6525 | const struct flow *flow, int vlan, | |
6526 | struct ofbundle *in_bundle) | |
6527 | { | |
6528 | struct mac_entry *mac; | |
6529 | ||
33158a18 JP |
6530 | /* Don't learn the OFPP_NONE port. */ |
6531 | if (in_bundle == &ofpp_none_bundle) { | |
6532 | return; | |
6533 | } | |
6534 | ||
abe529af BP |
6535 | if (!mac_learning_may_learn(ofproto->ml, flow->dl_src, vlan)) { |
6536 | return; | |
6537 | } | |
6538 | ||
6539 | mac = mac_learning_insert(ofproto->ml, flow->dl_src, vlan); | |
6540 | if (is_gratuitous_arp(flow)) { | |
6541 | /* We don't want to learn from gratuitous ARP packets that are | |
6542 | * reflected back over bond slaves so we lock the learning table. */ | |
6543 | if (!in_bundle->bond) { | |
6544 | mac_entry_set_grat_arp_lock(mac); | |
6545 | } else if (mac_entry_is_grat_arp_locked(mac)) { | |
6546 | return; | |
6547 | } | |
6548 | } | |
6549 | ||
6550 | if (mac_entry_is_new(mac) || mac->port.p != in_bundle) { | |
6551 | /* The log messages here could actually be useful in debugging, | |
6552 | * so keep the rate limit relatively high. */ | |
6553 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(30, 300); | |
6554 | VLOG_DBG_RL(&rl, "bridge %s: learned that "ETH_ADDR_FMT" is " | |
6555 | "on port %s in VLAN %d", | |
6556 | ofproto->up.name, ETH_ADDR_ARGS(flow->dl_src), | |
6557 | in_bundle->name, vlan); | |
6558 | ||
6559 | mac->port.p = in_bundle; | |
6560 | tag_set_add(&ofproto->revalidate_set, | |
6561 | mac_learning_changed(ofproto->ml, mac)); | |
6562 | } | |
6563 | } | |
6564 | ||
3581c12c | 6565 | static struct ofbundle * |
4acbc98d SH |
6566 | lookup_input_bundle(const struct ofproto_dpif *ofproto, uint16_t in_port, |
6567 | bool warn, struct ofport_dpif **in_ofportp) | |
395e68ce BP |
6568 | { |
6569 | struct ofport_dpif *ofport; | |
6570 | ||
6571 | /* Find the port and bundle for the received packet. */ | |
6572 | ofport = get_ofp_port(ofproto, in_port); | |
70c2fd56 BP |
6573 | if (in_ofportp) { |
6574 | *in_ofportp = ofport; | |
6575 | } | |
395e68ce | 6576 | if (ofport && ofport->bundle) { |
3581c12c | 6577 | return ofport->bundle; |
395e68ce BP |
6578 | } |
6579 | ||
70c2fd56 BP |
6580 | /* Special-case OFPP_NONE, which a controller may use as the ingress |
6581 | * port for traffic that it is sourcing. */ | |
6582 | if (in_port == OFPP_NONE) { | |
6583 | return &ofpp_none_bundle; | |
6584 | } | |
6585 | ||
395e68ce BP |
6586 | /* Odd. A few possible reasons here: |
6587 | * | |
6588 | * - We deleted a port but there are still a few packets queued up | |
6589 | * from it. | |
6590 | * | |
6591 | * - Someone externally added a port (e.g. "ovs-dpctl add-if") that | |
6592 | * we don't know about. | |
6593 | * | |
6594 | * - The ofproto client didn't configure the port as part of a bundle. | |
6b803ddc EJ |
6595 | * This is particularly likely to happen if a packet was received on the |
6596 | * port after it was created, but before the client had a chance to | |
6597 | * configure its bundle. | |
395e68ce BP |
6598 | */ |
6599 | if (warn) { | |
6600 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
6601 | ||
6602 | VLOG_WARN_RL(&rl, "bridge %s: received packet on unknown " | |
6603 | "port %"PRIu16, ofproto->up.name, in_port); | |
6604 | } | |
6605 | return NULL; | |
6606 | } | |
6607 | ||
5da5ec37 | 6608 | /* Determines whether packets in 'flow' within 'ofproto' should be forwarded or |
abe529af BP |
6609 | * dropped. Returns true if they may be forwarded, false if they should be |
6610 | * dropped. | |
6611 | * | |
395e68ce BP |
6612 | * 'in_port' must be the ofport_dpif that corresponds to flow->in_port. |
6613 | * 'in_port' must be part of a bundle (e.g. in_port->bundle must be nonnull). | |
abe529af | 6614 | * |
395e68ce BP |
6615 | * 'vlan' must be the VLAN that corresponds to flow->vlan_tci on 'in_port', as |
6616 | * returned by input_vid_to_vlan(). It must be a valid VLAN for 'in_port', as | |
6617 | * checked by input_vid_is_valid(). | |
abe529af BP |
6618 | * |
6619 | * May also add tags to '*tags', although the current implementation only does | |
6620 | * so in one special case. | |
6621 | */ | |
6622 | static bool | |
479df176 BP |
6623 | is_admissible(struct action_xlate_ctx *ctx, struct ofport_dpif *in_port, |
6624 | uint16_t vlan) | |
abe529af | 6625 | { |
479df176 BP |
6626 | struct ofproto_dpif *ofproto = ctx->ofproto; |
6627 | struct flow *flow = &ctx->flow; | |
395e68ce | 6628 | struct ofbundle *in_bundle = in_port->bundle; |
abe529af | 6629 | |
395e68ce BP |
6630 | /* Drop frames for reserved multicast addresses |
6631 | * only if forward_bpdu option is absent. */ | |
614ec445 | 6632 | if (!ofproto->up.forward_bpdu && eth_addr_is_reserved(flow->dl_dst)) { |
479df176 | 6633 | xlate_report(ctx, "packet has reserved destination MAC, dropping"); |
abe529af BP |
6634 | return false; |
6635 | } | |
6636 | ||
abe529af BP |
6637 | if (in_bundle->bond) { |
6638 | struct mac_entry *mac; | |
6639 | ||
6640 | switch (bond_check_admissibility(in_bundle->bond, in_port, | |
479df176 | 6641 | flow->dl_dst, &ctx->tags)) { |
abe529af BP |
6642 | case BV_ACCEPT: |
6643 | break; | |
6644 | ||
6645 | case BV_DROP: | |
479df176 | 6646 | xlate_report(ctx, "bonding refused admissibility, dropping"); |
abe529af BP |
6647 | return false; |
6648 | ||
6649 | case BV_DROP_IF_MOVED: | |
6650 | mac = mac_learning_lookup(ofproto->ml, flow->dl_src, vlan, NULL); | |
6651 | if (mac && mac->port.p != in_bundle && | |
6652 | (!is_gratuitous_arp(flow) | |
6653 | || mac_entry_is_grat_arp_locked(mac))) { | |
479df176 BP |
6654 | xlate_report(ctx, "SLB bond thinks this packet looped back, " |
6655 | "dropping"); | |
abe529af BP |
6656 | return false; |
6657 | } | |
6658 | break; | |
6659 | } | |
6660 | } | |
6661 | ||
6662 | return true; | |
6663 | } | |
6664 | ||
4cd78906 | 6665 | static void |
abe529af BP |
6666 | xlate_normal(struct action_xlate_ctx *ctx) |
6667 | { | |
395e68ce | 6668 | struct ofport_dpif *in_port; |
abe529af | 6669 | struct ofbundle *in_bundle; |
abe529af | 6670 | struct mac_entry *mac; |
395e68ce BP |
6671 | uint16_t vlan; |
6672 | uint16_t vid; | |
abe529af | 6673 | |
75a75043 BP |
6674 | ctx->has_normal = true; |
6675 | ||
3581c12c | 6676 | in_bundle = lookup_input_bundle(ctx->ofproto, ctx->flow.in_port, |
70c2fd56 | 6677 | ctx->packet != NULL, &in_port); |
3581c12c | 6678 | if (!in_bundle) { |
479df176 | 6679 | xlate_report(ctx, "no input bundle, dropping"); |
395e68ce BP |
6680 | return; |
6681 | } | |
3581c12c | 6682 | |
395e68ce BP |
6683 | /* Drop malformed frames. */ |
6684 | if (ctx->flow.dl_type == htons(ETH_TYPE_VLAN) && | |
6685 | !(ctx->flow.vlan_tci & htons(VLAN_CFI))) { | |
6686 | if (ctx->packet != NULL) { | |
6687 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
6688 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet with partial " | |
6689 | "VLAN tag received on port %s", | |
6690 | ctx->ofproto->up.name, in_bundle->name); | |
6691 | } | |
479df176 | 6692 | xlate_report(ctx, "partial VLAN tag, dropping"); |
395e68ce BP |
6693 | return; |
6694 | } | |
6695 | ||
6696 | /* Drop frames on bundles reserved for mirroring. */ | |
6697 | if (in_bundle->mirror_out) { | |
6698 | if (ctx->packet != NULL) { | |
6699 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
6700 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet received on port " | |
6701 | "%s, which is reserved exclusively for mirroring", | |
6702 | ctx->ofproto->up.name, in_bundle->name); | |
6703 | } | |
479df176 | 6704 | xlate_report(ctx, "input port is mirror output port, dropping"); |
395e68ce BP |
6705 | return; |
6706 | } | |
6707 | ||
6708 | /* Check VLAN. */ | |
6709 | vid = vlan_tci_to_vid(ctx->flow.vlan_tci); | |
6710 | if (!input_vid_is_valid(vid, in_bundle, ctx->packet != NULL)) { | |
479df176 | 6711 | xlate_report(ctx, "disallowed VLAN VID for this input port, dropping"); |
395e68ce BP |
6712 | return; |
6713 | } | |
6714 | vlan = input_vid_to_vlan(in_bundle, vid); | |
6715 | ||
6716 | /* Check other admissibility requirements. */ | |
479df176 | 6717 | if (in_port && !is_admissible(ctx, in_port, vlan)) { |
395e68ce | 6718 | return; |
abe529af BP |
6719 | } |
6720 | ||
75a75043 | 6721 | /* Learn source MAC. */ |
3de9590b | 6722 | if (ctx->may_learn) { |
abe529af BP |
6723 | update_learning_table(ctx->ofproto, &ctx->flow, vlan, in_bundle); |
6724 | } | |
6725 | ||
6726 | /* Determine output bundle. */ | |
6727 | mac = mac_learning_lookup(ctx->ofproto->ml, ctx->flow.dl_dst, vlan, | |
6728 | &ctx->tags); | |
6729 | if (mac) { | |
c06bba01 | 6730 | if (mac->port.p != in_bundle) { |
479df176 | 6731 | xlate_report(ctx, "forwarding to learned port"); |
c06bba01 | 6732 | output_normal(ctx, mac->port.p, vlan); |
479df176 BP |
6733 | } else { |
6734 | xlate_report(ctx, "learned port is input port, dropping"); | |
c06bba01 | 6735 | } |
abe529af | 6736 | } else { |
c06bba01 | 6737 | struct ofbundle *bundle; |
abe529af | 6738 | |
479df176 | 6739 | xlate_report(ctx, "no learned MAC for destination, flooding"); |
c06bba01 JP |
6740 | HMAP_FOR_EACH (bundle, hmap_node, &ctx->ofproto->bundles) { |
6741 | if (bundle != in_bundle | |
6742 | && ofbundle_includes_vlan(bundle, vlan) | |
6743 | && bundle->floodable | |
6744 | && !bundle->mirror_out) { | |
6745 | output_normal(ctx, bundle, vlan); | |
6746 | } | |
6747 | } | |
6748 | ctx->nf_output_iface = NF_OUT_FLOOD; | |
abe529af | 6749 | } |
abe529af BP |
6750 | } |
6751 | \f | |
54a9cbc9 BP |
6752 | /* Optimized flow revalidation. |
6753 | * | |
6754 | * It's a difficult problem, in general, to tell which facets need to have | |
6755 | * their actions recalculated whenever the OpenFlow flow table changes. We | |
6756 | * don't try to solve that general problem: for most kinds of OpenFlow flow | |
6757 | * table changes, we recalculate the actions for every facet. This is | |
6758 | * relatively expensive, but it's good enough if the OpenFlow flow table | |
6759 | * doesn't change very often. | |
6760 | * | |
6761 | * However, we can expect one particular kind of OpenFlow flow table change to | |
6762 | * happen frequently: changes caused by MAC learning. To avoid wasting a lot | |
6763 | * of CPU on revalidating every facet whenever MAC learning modifies the flow | |
6764 | * table, we add a special case that applies to flow tables in which every rule | |
6765 | * has the same form (that is, the same wildcards), except that the table is | |
6766 | * also allowed to have a single "catch-all" flow that matches all packets. We | |
6767 | * optimize this case by tagging all of the facets that resubmit into the table | |
6768 | * and invalidating the same tag whenever a flow changes in that table. The | |
6769 | * end result is that we revalidate just the facets that need it (and sometimes | |
6770 | * a few more, but not all of the facets or even all of the facets that | |
6771 | * resubmit to the table modified by MAC learning). */ | |
6772 | ||
5cb7a798 | 6773 | /* Calculates the tag to use for 'flow' and mask 'mask' when it is inserted |
54a9cbc9 | 6774 | * into an OpenFlow table with the given 'basis'. */ |
822d9414 | 6775 | static tag_type |
5cb7a798 | 6776 | rule_calculate_tag(const struct flow *flow, const struct minimask *mask, |
54a9cbc9 BP |
6777 | uint32_t secret) |
6778 | { | |
5cb7a798 | 6779 | if (minimask_is_catchall(mask)) { |
54a9cbc9 BP |
6780 | return 0; |
6781 | } else { | |
5cb7a798 BP |
6782 | uint32_t hash = flow_hash_in_minimask(flow, mask, secret); |
6783 | return tag_create_deterministic(hash); | |
54a9cbc9 BP |
6784 | } |
6785 | } | |
6786 | ||
6787 | /* Following a change to OpenFlow table 'table_id' in 'ofproto', update the | |
6788 | * taggability of that table. | |
6789 | * | |
6790 | * This function must be called after *each* change to a flow table. If you | |
6791 | * skip calling it on some changes then the pointer comparisons at the end can | |
6792 | * be invalid if you get unlucky. For example, if a flow removal causes a | |
6793 | * cls_table to be destroyed and then a flow insertion causes a cls_table with | |
6794 | * different wildcards to be created with the same address, then this function | |
6795 | * will incorrectly skip revalidation. */ | |
6796 | static void | |
6797 | table_update_taggable(struct ofproto_dpif *ofproto, uint8_t table_id) | |
6798 | { | |
6799 | struct table_dpif *table = &ofproto->tables[table_id]; | |
d0918789 | 6800 | const struct oftable *oftable = &ofproto->up.tables[table_id]; |
54a9cbc9 BP |
6801 | struct cls_table *catchall, *other; |
6802 | struct cls_table *t; | |
6803 | ||
6804 | catchall = other = NULL; | |
6805 | ||
d0918789 | 6806 | switch (hmap_count(&oftable->cls.tables)) { |
54a9cbc9 BP |
6807 | case 0: |
6808 | /* We could tag this OpenFlow table but it would make the logic a | |
6809 | * little harder and it's a corner case that doesn't seem worth it | |
6810 | * yet. */ | |
6811 | break; | |
6812 | ||
6813 | case 1: | |
6814 | case 2: | |
d0918789 | 6815 | HMAP_FOR_EACH (t, hmap_node, &oftable->cls.tables) { |
54a9cbc9 BP |
6816 | if (cls_table_is_catchall(t)) { |
6817 | catchall = t; | |
6818 | } else if (!other) { | |
6819 | other = t; | |
6820 | } else { | |
6821 | /* Indicate that we can't tag this by setting both tables to | |
6822 | * NULL. (We know that 'catchall' is already NULL.) */ | |
6823 | other = NULL; | |
6824 | } | |
6825 | } | |
6826 | break; | |
6827 | ||
6828 | default: | |
6829 | /* Can't tag this table. */ | |
6830 | break; | |
6831 | } | |
6832 | ||
6833 | if (table->catchall_table != catchall || table->other_table != other) { | |
6834 | table->catchall_table = catchall; | |
6835 | table->other_table = other; | |
3c4a309c | 6836 | ofproto->need_revalidate = REV_FLOW_TABLE; |
54a9cbc9 BP |
6837 | } |
6838 | } | |
6839 | ||
6840 | /* Given 'rule' that has changed in some way (either it is a rule being | |
6841 | * inserted, a rule being deleted, or a rule whose actions are being | |
6842 | * modified), marks facets for revalidation to ensure that packets will be | |
6843 | * forwarded correctly according to the new state of the flow table. | |
6844 | * | |
6845 | * This function must be called after *each* change to a flow table. See | |
6846 | * the comment on table_update_taggable() for more information. */ | |
6847 | static void | |
6848 | rule_invalidate(const struct rule_dpif *rule) | |
6849 | { | |
6850 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto); | |
6851 | ||
6852 | table_update_taggable(ofproto, rule->up.table_id); | |
6853 | ||
6854 | if (!ofproto->need_revalidate) { | |
6855 | struct table_dpif *table = &ofproto->tables[rule->up.table_id]; | |
6856 | ||
6857 | if (table->other_table && rule->tag) { | |
6858 | tag_set_add(&ofproto->revalidate_set, rule->tag); | |
6859 | } else { | |
3c4a309c | 6860 | ofproto->need_revalidate = REV_FLOW_TABLE; |
54a9cbc9 BP |
6861 | } |
6862 | } | |
6863 | } | |
6864 | \f | |
abe529af | 6865 | static bool |
7257b535 BP |
6866 | set_frag_handling(struct ofproto *ofproto_, |
6867 | enum ofp_config_flags frag_handling) | |
abe529af BP |
6868 | { |
6869 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
abe529af | 6870 | |
7257b535 | 6871 | if (frag_handling != OFPC_FRAG_REASM) { |
3c4a309c | 6872 | ofproto->need_revalidate = REV_RECONFIGURE; |
7257b535 BP |
6873 | return true; |
6874 | } else { | |
6875 | return false; | |
6876 | } | |
abe529af BP |
6877 | } |
6878 | ||
90bf1e07 | 6879 | static enum ofperr |
abe529af BP |
6880 | packet_out(struct ofproto *ofproto_, struct ofpbuf *packet, |
6881 | const struct flow *flow, | |
f25d0cf3 | 6882 | const struct ofpact *ofpacts, size_t ofpacts_len) |
abe529af BP |
6883 | { |
6884 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
548de4dd BP |
6885 | struct odputil_keybuf keybuf; |
6886 | struct dpif_flow_stats stats; | |
abe529af | 6887 | |
548de4dd | 6888 | struct ofpbuf key; |
112bc5f4 | 6889 | |
548de4dd BP |
6890 | struct action_xlate_ctx ctx; |
6891 | uint64_t odp_actions_stub[1024 / 8]; | |
6892 | struct ofpbuf odp_actions; | |
80e5eed9 | 6893 | |
548de4dd | 6894 | ofpbuf_use_stack(&key, &keybuf, sizeof keybuf); |
e1b1d06a JP |
6895 | odp_flow_key_from_flow(&key, flow, |
6896 | ofp_port_to_odp_port(ofproto, flow->in_port)); | |
050ac423 | 6897 | |
548de4dd | 6898 | dpif_flow_stats_extract(flow, packet, time_msec(), &stats); |
abe529af | 6899 | |
548de4dd BP |
6900 | action_xlate_ctx_init(&ctx, ofproto, flow, flow->vlan_tci, NULL, |
6901 | packet_get_tcp_flags(packet, flow), packet); | |
6902 | ctx.resubmit_stats = &stats; | |
2284188b | 6903 | |
548de4dd BP |
6904 | ofpbuf_use_stub(&odp_actions, |
6905 | odp_actions_stub, sizeof odp_actions_stub); | |
6906 | xlate_actions(&ctx, ofpacts, ofpacts_len, &odp_actions); | |
acf60855 | 6907 | dpif_execute(ofproto->backer->dpif, key.data, key.size, |
548de4dd BP |
6908 | odp_actions.data, odp_actions.size, packet); |
6909 | ofpbuf_uninit(&odp_actions); | |
2284188b | 6910 | |
548de4dd | 6911 | return 0; |
abe529af | 6912 | } |
6fca1ffb BP |
6913 | \f |
6914 | /* NetFlow. */ | |
6915 | ||
6916 | static int | |
6917 | set_netflow(struct ofproto *ofproto_, | |
6918 | const struct netflow_options *netflow_options) | |
6919 | { | |
6920 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
6921 | ||
6922 | if (netflow_options) { | |
6923 | if (!ofproto->netflow) { | |
6924 | ofproto->netflow = netflow_create(); | |
6925 | } | |
6926 | return netflow_set_options(ofproto->netflow, netflow_options); | |
6927 | } else { | |
6928 | netflow_destroy(ofproto->netflow); | |
6929 | ofproto->netflow = NULL; | |
6930 | return 0; | |
6931 | } | |
6932 | } | |
abe529af BP |
6933 | |
6934 | static void | |
6935 | get_netflow_ids(const struct ofproto *ofproto_, | |
6936 | uint8_t *engine_type, uint8_t *engine_id) | |
6937 | { | |
6938 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
6939 | ||
acf60855 | 6940 | dpif_get_netflow_ids(ofproto->backer->dpif, engine_type, engine_id); |
abe529af | 6941 | } |
6fca1ffb BP |
6942 | |
6943 | static void | |
6944 | send_active_timeout(struct ofproto_dpif *ofproto, struct facet *facet) | |
6945 | { | |
6946 | if (!facet_is_controller_flow(facet) && | |
6947 | netflow_active_timeout_expired(ofproto->netflow, &facet->nf_flow)) { | |
b0f7b9b5 | 6948 | struct subfacet *subfacet; |
6fca1ffb BP |
6949 | struct ofexpired expired; |
6950 | ||
b0f7b9b5 | 6951 | LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) { |
6a7e895f | 6952 | if (subfacet->path == SF_FAST_PATH) { |
b0f7b9b5 | 6953 | struct dpif_flow_stats stats; |
6fca1ffb | 6954 | |
6a7e895f | 6955 | subfacet_reinstall(subfacet, &stats); |
15baa734 | 6956 | subfacet_update_stats(subfacet, &stats); |
b0f7b9b5 | 6957 | } |
6fca1ffb BP |
6958 | } |
6959 | ||
6960 | expired.flow = facet->flow; | |
6961 | expired.packet_count = facet->packet_count; | |
6962 | expired.byte_count = facet->byte_count; | |
6963 | expired.used = facet->used; | |
6964 | netflow_expire(ofproto->netflow, &facet->nf_flow, &expired); | |
6965 | } | |
6966 | } | |
6967 | ||
6968 | static void | |
6969 | send_netflow_active_timeouts(struct ofproto_dpif *ofproto) | |
6970 | { | |
6971 | struct facet *facet; | |
6972 | ||
6973 | HMAP_FOR_EACH (facet, hmap_node, &ofproto->facets) { | |
6974 | send_active_timeout(ofproto, facet); | |
6975 | } | |
6976 | } | |
abe529af BP |
6977 | \f |
6978 | static struct ofproto_dpif * | |
6979 | ofproto_dpif_lookup(const char *name) | |
6980 | { | |
b44a10b7 BP |
6981 | struct ofproto_dpif *ofproto; |
6982 | ||
6983 | HMAP_FOR_EACH_WITH_HASH (ofproto, all_ofproto_dpifs_node, | |
6984 | hash_string(name, 0), &all_ofproto_dpifs) { | |
6985 | if (!strcmp(ofproto->up.name, name)) { | |
6986 | return ofproto; | |
6987 | } | |
6988 | } | |
6989 | return NULL; | |
abe529af BP |
6990 | } |
6991 | ||
f0a3aa2e | 6992 | static void |
96e466a3 | 6993 | ofproto_unixctl_fdb_flush(struct unixctl_conn *conn, int argc, |
0e15264f | 6994 | const char *argv[], void *aux OVS_UNUSED) |
f0a3aa2e | 6995 | { |
490df1ef | 6996 | struct ofproto_dpif *ofproto; |
f0a3aa2e | 6997 | |
96e466a3 EJ |
6998 | if (argc > 1) { |
6999 | ofproto = ofproto_dpif_lookup(argv[1]); | |
7000 | if (!ofproto) { | |
bde9f75d | 7001 | unixctl_command_reply_error(conn, "no such bridge"); |
96e466a3 EJ |
7002 | return; |
7003 | } | |
d0040604 | 7004 | mac_learning_flush(ofproto->ml, &ofproto->revalidate_set); |
96e466a3 EJ |
7005 | } else { |
7006 | HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) { | |
d0040604 | 7007 | mac_learning_flush(ofproto->ml, &ofproto->revalidate_set); |
96e466a3 | 7008 | } |
f0a3aa2e | 7009 | } |
f0a3aa2e | 7010 | |
bde9f75d | 7011 | unixctl_command_reply(conn, "table successfully flushed"); |
f0a3aa2e AA |
7012 | } |
7013 | ||
abe529af | 7014 | static void |
0e15264f BP |
7015 | ofproto_unixctl_fdb_show(struct unixctl_conn *conn, int argc OVS_UNUSED, |
7016 | const char *argv[], void *aux OVS_UNUSED) | |
abe529af BP |
7017 | { |
7018 | struct ds ds = DS_EMPTY_INITIALIZER; | |
7019 | const struct ofproto_dpif *ofproto; | |
7020 | const struct mac_entry *e; | |
7021 | ||
0e15264f | 7022 | ofproto = ofproto_dpif_lookup(argv[1]); |
abe529af | 7023 | if (!ofproto) { |
bde9f75d | 7024 | unixctl_command_reply_error(conn, "no such bridge"); |
abe529af BP |
7025 | return; |
7026 | } | |
7027 | ||
7028 | ds_put_cstr(&ds, " port VLAN MAC Age\n"); | |
7029 | LIST_FOR_EACH (e, lru_node, &ofproto->ml->lrus) { | |
7030 | struct ofbundle *bundle = e->port.p; | |
7031 | ds_put_format(&ds, "%5d %4d "ETH_ADDR_FMT" %3d\n", | |
7032 | ofbundle_get_a_port(bundle)->odp_port, | |
e764773c BP |
7033 | e->vlan, ETH_ADDR_ARGS(e->mac), |
7034 | mac_entry_age(ofproto->ml, e)); | |
abe529af | 7035 | } |
bde9f75d | 7036 | unixctl_command_reply(conn, ds_cstr(&ds)); |
abe529af BP |
7037 | ds_destroy(&ds); |
7038 | } | |
7039 | ||
6a6455e5 | 7040 | struct trace_ctx { |
abe529af BP |
7041 | struct action_xlate_ctx ctx; |
7042 | struct flow flow; | |
7043 | struct ds *result; | |
7044 | }; | |
7045 | ||
7046 | static void | |
29901626 BP |
7047 | trace_format_rule(struct ds *result, uint8_t table_id, int level, |
7048 | const struct rule_dpif *rule) | |
abe529af BP |
7049 | { |
7050 | ds_put_char_multiple(result, '\t', level); | |
7051 | if (!rule) { | |
7052 | ds_put_cstr(result, "No match\n"); | |
7053 | return; | |
7054 | } | |
7055 | ||
29901626 BP |
7056 | ds_put_format(result, "Rule: table=%"PRIu8" cookie=%#"PRIx64" ", |
7057 | table_id, ntohll(rule->up.flow_cookie)); | |
79feb7df | 7058 | cls_rule_format(&rule->up.cr, result); |
abe529af BP |
7059 | ds_put_char(result, '\n'); |
7060 | ||
7061 | ds_put_char_multiple(result, '\t', level); | |
7062 | ds_put_cstr(result, "OpenFlow "); | |
f25d0cf3 | 7063 | ofpacts_format(rule->up.ofpacts, rule->up.ofpacts_len, result); |
abe529af BP |
7064 | ds_put_char(result, '\n'); |
7065 | } | |
7066 | ||
7067 | static void | |
7068 | trace_format_flow(struct ds *result, int level, const char *title, | |
6a6455e5 | 7069 | struct trace_ctx *trace) |
abe529af BP |
7070 | { |
7071 | ds_put_char_multiple(result, '\t', level); | |
7072 | ds_put_format(result, "%s: ", title); | |
7073 | if (flow_equal(&trace->ctx.flow, &trace->flow)) { | |
7074 | ds_put_cstr(result, "unchanged"); | |
7075 | } else { | |
7076 | flow_format(result, &trace->ctx.flow); | |
7077 | trace->flow = trace->ctx.flow; | |
7078 | } | |
7079 | ds_put_char(result, '\n'); | |
7080 | } | |
7081 | ||
eb9e1c26 EJ |
7082 | static void |
7083 | trace_format_regs(struct ds *result, int level, const char *title, | |
6a6455e5 | 7084 | struct trace_ctx *trace) |
eb9e1c26 EJ |
7085 | { |
7086 | size_t i; | |
7087 | ||
7088 | ds_put_char_multiple(result, '\t', level); | |
7089 | ds_put_format(result, "%s:", title); | |
7090 | for (i = 0; i < FLOW_N_REGS; i++) { | |
7091 | ds_put_format(result, " reg%zu=0x%"PRIx32, i, trace->flow.regs[i]); | |
7092 | } | |
7093 | ds_put_char(result, '\n'); | |
7094 | } | |
7095 | ||
1ed8d352 EJ |
7096 | static void |
7097 | trace_format_odp(struct ds *result, int level, const char *title, | |
6a6455e5 | 7098 | struct trace_ctx *trace) |
1ed8d352 EJ |
7099 | { |
7100 | struct ofpbuf *odp_actions = trace->ctx.odp_actions; | |
7101 | ||
7102 | ds_put_char_multiple(result, '\t', level); | |
7103 | ds_put_format(result, "%s: ", title); | |
7104 | format_odp_actions(result, odp_actions->data, odp_actions->size); | |
7105 | ds_put_char(result, '\n'); | |
7106 | } | |
7107 | ||
abe529af BP |
7108 | static void |
7109 | trace_resubmit(struct action_xlate_ctx *ctx, struct rule_dpif *rule) | |
7110 | { | |
6a6455e5 | 7111 | struct trace_ctx *trace = CONTAINER_OF(ctx, struct trace_ctx, ctx); |
abe529af BP |
7112 | struct ds *result = trace->result; |
7113 | ||
7114 | ds_put_char(result, '\n'); | |
7115 | trace_format_flow(result, ctx->recurse + 1, "Resubmitted flow", trace); | |
eb9e1c26 | 7116 | trace_format_regs(result, ctx->recurse + 1, "Resubmitted regs", trace); |
1ed8d352 | 7117 | trace_format_odp(result, ctx->recurse + 1, "Resubmitted odp", trace); |
29901626 | 7118 | trace_format_rule(result, ctx->table_id, ctx->recurse + 1, rule); |
abe529af BP |
7119 | } |
7120 | ||
479df176 BP |
7121 | static void |
7122 | trace_report(struct action_xlate_ctx *ctx, const char *s) | |
7123 | { | |
7124 | struct trace_ctx *trace = CONTAINER_OF(ctx, struct trace_ctx, ctx); | |
7125 | struct ds *result = trace->result; | |
7126 | ||
7127 | ds_put_char_multiple(result, '\t', ctx->recurse); | |
7128 | ds_put_cstr(result, s); | |
7129 | ds_put_char(result, '\n'); | |
7130 | } | |
7131 | ||
abe529af | 7132 | static void |
0e15264f | 7133 | ofproto_unixctl_trace(struct unixctl_conn *conn, int argc, const char *argv[], |
abe529af BP |
7134 | void *aux OVS_UNUSED) |
7135 | { | |
0e15264f | 7136 | const char *dpname = argv[1]; |
abe529af | 7137 | struct ofproto_dpif *ofproto; |
876b0e1c BP |
7138 | struct ofpbuf odp_key; |
7139 | struct ofpbuf *packet; | |
e84173dc | 7140 | ovs_be16 initial_tci; |
abe529af BP |
7141 | struct ds result; |
7142 | struct flow flow; | |
abe529af BP |
7143 | char *s; |
7144 | ||
876b0e1c BP |
7145 | packet = NULL; |
7146 | ofpbuf_init(&odp_key, 0); | |
abe529af BP |
7147 | ds_init(&result); |
7148 | ||
e84173dc BP |
7149 | ofproto = ofproto_dpif_lookup(dpname); |
7150 | if (!ofproto) { | |
bde9f75d EJ |
7151 | unixctl_command_reply_error(conn, "Unknown ofproto (use ofproto/list " |
7152 | "for help)"); | |
e84173dc BP |
7153 | goto exit; |
7154 | } | |
0e15264f | 7155 | if (argc == 3 || (argc == 4 && !strcmp(argv[3], "-generate"))) { |
8b3b8dd1 | 7156 | /* ofproto/trace dpname flow [-generate] */ |
0e15264f BP |
7157 | const char *flow_s = argv[2]; |
7158 | const char *generate_s = argv[3]; | |
876b0e1c | 7159 | |
31a19d69 BP |
7160 | /* Allow 'flow_s' to be either a datapath flow or an OpenFlow-like |
7161 | * flow. We guess which type it is based on whether 'flow_s' contains | |
7162 | * an '(', since a datapath flow always contains '(') but an | |
7163 | * OpenFlow-like flow should not (in fact it's allowed but I believe | |
7164 | * that's not documented anywhere). | |
7165 | * | |
7166 | * An alternative would be to try to parse 'flow_s' both ways, but then | |
7167 | * it would be tricky giving a sensible error message. After all, do | |
7168 | * you just say "syntax error" or do you present both error messages? | |
7169 | * Both choices seem lousy. */ | |
7170 | if (strchr(flow_s, '(')) { | |
acf60855 | 7171 | enum odp_key_fitness fitness; |
31a19d69 BP |
7172 | int error; |
7173 | ||
7174 | /* Convert string to datapath key. */ | |
7175 | ofpbuf_init(&odp_key, 0); | |
7176 | error = odp_flow_key_from_string(flow_s, NULL, &odp_key); | |
7177 | if (error) { | |
7178 | unixctl_command_reply_error(conn, "Bad flow syntax"); | |
7179 | goto exit; | |
7180 | } | |
876b0e1c | 7181 | |
acf60855 JP |
7182 | fitness = odp_flow_key_to_flow(odp_key.data, odp_key.size, &flow); |
7183 | flow.in_port = odp_port_to_ofp_port(ofproto, flow.in_port); | |
7184 | ||
31a19d69 | 7185 | /* Convert odp_key to flow. */ |
acf60855 JP |
7186 | error = ofproto_dpif_vsp_adjust(ofproto, fitness, &flow, |
7187 | &initial_tci, NULL); | |
31a19d69 BP |
7188 | if (error == ODP_FIT_ERROR) { |
7189 | unixctl_command_reply_error(conn, "Invalid flow"); | |
7190 | goto exit; | |
7191 | } | |
7192 | } else { | |
7193 | char *error_s; | |
7194 | ||
7195 | error_s = parse_ofp_exact_flow(&flow, argv[2]); | |
7196 | if (error_s) { | |
7197 | unixctl_command_reply_error(conn, error_s); | |
7198 | free(error_s); | |
7199 | goto exit; | |
7200 | } | |
7201 | ||
7202 | initial_tci = flow.vlan_tci; | |
7203 | vsp_adjust_flow(ofproto, &flow); | |
876b0e1c | 7204 | } |
8b3b8dd1 BP |
7205 | |
7206 | /* Generate a packet, if requested. */ | |
0e15264f | 7207 | if (generate_s) { |
8b3b8dd1 BP |
7208 | packet = ofpbuf_new(0); |
7209 | flow_compose(packet, &flow); | |
7210 | } | |
0e15264f | 7211 | } else if (argc == 6) { |
abff858b | 7212 | /* ofproto/trace dpname priority tun_id in_port packet */ |
0e15264f BP |
7213 | const char *priority_s = argv[2]; |
7214 | const char *tun_id_s = argv[3]; | |
7215 | const char *in_port_s = argv[4]; | |
7216 | const char *packet_s = argv[5]; | |
9b56fe13 | 7217 | uint32_t in_port = atoi(in_port_s); |
0e15264f BP |
7218 | ovs_be64 tun_id = htonll(strtoull(tun_id_s, NULL, 0)); |
7219 | uint32_t priority = atoi(priority_s); | |
e22f1753 | 7220 | const char *msg; |
0e15264f | 7221 | |
e22f1753 BP |
7222 | msg = eth_from_hex(packet_s, &packet); |
7223 | if (msg) { | |
bde9f75d | 7224 | unixctl_command_reply_error(conn, msg); |
876b0e1c BP |
7225 | goto exit; |
7226 | } | |
7227 | ||
7228 | ds_put_cstr(&result, "Packet: "); | |
c499c75d | 7229 | s = ofp_packet_to_string(packet->data, packet->size); |
876b0e1c BP |
7230 | ds_put_cstr(&result, s); |
7231 | free(s); | |
7232 | ||
296e07ac JG |
7233 | flow_extract(packet, priority, NULL, in_port, &flow); |
7234 | flow.tunnel.tun_id = tun_id; | |
e84173dc | 7235 | initial_tci = flow.vlan_tci; |
876b0e1c | 7236 | } else { |
bde9f75d | 7237 | unixctl_command_reply_error(conn, "Bad command syntax"); |
abe529af BP |
7238 | goto exit; |
7239 | } | |
7240 | ||
6a6455e5 EJ |
7241 | ofproto_trace(ofproto, &flow, packet, initial_tci, &result); |
7242 | unixctl_command_reply(conn, ds_cstr(&result)); | |
7243 | ||
7244 | exit: | |
7245 | ds_destroy(&result); | |
7246 | ofpbuf_delete(packet); | |
7247 | ofpbuf_uninit(&odp_key); | |
7248 | } | |
7249 | ||
7250 | static void | |
7251 | ofproto_trace(struct ofproto_dpif *ofproto, const struct flow *flow, | |
7252 | const struct ofpbuf *packet, ovs_be16 initial_tci, | |
7253 | struct ds *ds) | |
7254 | { | |
7255 | struct rule_dpif *rule; | |
7256 | ||
7257 | ds_put_cstr(ds, "Flow: "); | |
7258 | flow_format(ds, flow); | |
7259 | ds_put_char(ds, '\n'); | |
abe529af | 7260 | |
c57b2226 BP |
7261 | rule = rule_dpif_lookup(ofproto, flow); |
7262 | ||
6a6455e5 | 7263 | trace_format_rule(ds, 0, 0, rule); |
c57b2226 BP |
7264 | if (rule == ofproto->miss_rule) { |
7265 | ds_put_cstr(ds, "\nNo match, flow generates \"packet in\"s.\n"); | |
7266 | } else if (rule == ofproto->no_packet_in_rule) { | |
7267 | ds_put_cstr(ds, "\nNo match, packets dropped because " | |
7268 | "OFPPC_NO_PACKET_IN is set on in_port.\n"); | |
7269 | } | |
7270 | ||
abe529af | 7271 | if (rule) { |
050ac423 BP |
7272 | uint64_t odp_actions_stub[1024 / 8]; |
7273 | struct ofpbuf odp_actions; | |
7274 | ||
6a6455e5 | 7275 | struct trace_ctx trace; |
0e553d9c | 7276 | uint8_t tcp_flags; |
abe529af | 7277 | |
6a6455e5 EJ |
7278 | tcp_flags = packet ? packet_get_tcp_flags(packet, flow) : 0; |
7279 | trace.result = ds; | |
7280 | trace.flow = *flow; | |
050ac423 BP |
7281 | ofpbuf_use_stub(&odp_actions, |
7282 | odp_actions_stub, sizeof odp_actions_stub); | |
6a6455e5 | 7283 | action_xlate_ctx_init(&trace.ctx, ofproto, flow, initial_tci, |
0e553d9c | 7284 | rule, tcp_flags, packet); |
abe529af | 7285 | trace.ctx.resubmit_hook = trace_resubmit; |
479df176 | 7286 | trace.ctx.report_hook = trace_report; |
f25d0cf3 | 7287 | xlate_actions(&trace.ctx, rule->up.ofpacts, rule->up.ofpacts_len, |
050ac423 | 7288 | &odp_actions); |
abe529af | 7289 | |
6a6455e5 EJ |
7290 | ds_put_char(ds, '\n'); |
7291 | trace_format_flow(ds, 0, "Final flow", &trace); | |
7292 | ds_put_cstr(ds, "Datapath actions: "); | |
050ac423 BP |
7293 | format_odp_actions(ds, odp_actions.data, odp_actions.size); |
7294 | ofpbuf_uninit(&odp_actions); | |
876b0e1c | 7295 | |
6a7e895f BP |
7296 | if (trace.ctx.slow) { |
7297 | enum slow_path_reason slow; | |
7298 | ||
7299 | ds_put_cstr(ds, "\nThis flow is handled by the userspace " | |
7300 | "slow path because it:"); | |
7301 | for (slow = trace.ctx.slow; slow; ) { | |
7302 | enum slow_path_reason bit = rightmost_1bit(slow); | |
7303 | ||
7304 | switch (bit) { | |
7305 | case SLOW_CFM: | |
7306 | ds_put_cstr(ds, "\n\t- Consists of CFM packets."); | |
7307 | break; | |
7308 | case SLOW_LACP: | |
7309 | ds_put_cstr(ds, "\n\t- Consists of LACP packets."); | |
7310 | break; | |
7311 | case SLOW_STP: | |
7312 | ds_put_cstr(ds, "\n\t- Consists of STP packets."); | |
7313 | break; | |
7314 | case SLOW_IN_BAND: | |
7315 | ds_put_cstr(ds, "\n\t- Needs in-band special case " | |
7316 | "processing."); | |
7317 | if (!packet) { | |
7318 | ds_put_cstr(ds, "\n\t (The datapath actions are " | |
7319 | "incomplete--for complete actions, " | |
7320 | "please supply a packet.)"); | |
7321 | } | |
7322 | break; | |
7323 | case SLOW_CONTROLLER: | |
7324 | ds_put_cstr(ds, "\n\t- Sends \"packet-in\" messages " | |
7325 | "to the OpenFlow controller."); | |
7326 | break; | |
7327 | case SLOW_MATCH: | |
7328 | ds_put_cstr(ds, "\n\t- Needs more specific matching " | |
7329 | "than the datapath supports."); | |
7330 | break; | |
7331 | } | |
7332 | ||
7333 | slow &= ~bit; | |
7334 | } | |
7335 | ||
7336 | if (slow & ~SLOW_MATCH) { | |
7337 | ds_put_cstr(ds, "\nThe datapath actions above do not reflect " | |
7338 | "the special slow-path processing."); | |
876b0e1c BP |
7339 | } |
7340 | } | |
abe529af | 7341 | } |
abe529af BP |
7342 | } |
7343 | ||
7ee20df1 | 7344 | static void |
0e15264f BP |
7345 | ofproto_dpif_clog(struct unixctl_conn *conn OVS_UNUSED, int argc OVS_UNUSED, |
7346 | const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED) | |
7ee20df1 BP |
7347 | { |
7348 | clogged = true; | |
bde9f75d | 7349 | unixctl_command_reply(conn, NULL); |
7ee20df1 BP |
7350 | } |
7351 | ||
7352 | static void | |
0e15264f BP |
7353 | ofproto_dpif_unclog(struct unixctl_conn *conn OVS_UNUSED, int argc OVS_UNUSED, |
7354 | const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED) | |
7ee20df1 BP |
7355 | { |
7356 | clogged = false; | |
bde9f75d | 7357 | unixctl_command_reply(conn, NULL); |
7ee20df1 BP |
7358 | } |
7359 | ||
6814e51f BP |
7360 | /* Runs a self-check of flow translations in 'ofproto'. Appends a message to |
7361 | * 'reply' describing the results. */ | |
7362 | static void | |
7363 | ofproto_dpif_self_check__(struct ofproto_dpif *ofproto, struct ds *reply) | |
7364 | { | |
7365 | struct facet *facet; | |
7366 | int errors; | |
7367 | ||
7368 | errors = 0; | |
7369 | HMAP_FOR_EACH (facet, hmap_node, &ofproto->facets) { | |
7370 | if (!facet_check_consistency(facet)) { | |
7371 | errors++; | |
7372 | } | |
7373 | } | |
7374 | if (errors) { | |
3c4a309c | 7375 | ofproto->need_revalidate = REV_INCONSISTENCY; |
6814e51f BP |
7376 | } |
7377 | ||
7378 | if (errors) { | |
7379 | ds_put_format(reply, "%s: self-check failed (%d errors)\n", | |
7380 | ofproto->up.name, errors); | |
7381 | } else { | |
7382 | ds_put_format(reply, "%s: self-check passed\n", ofproto->up.name); | |
7383 | } | |
7384 | } | |
7385 | ||
7386 | static void | |
7387 | ofproto_dpif_self_check(struct unixctl_conn *conn, | |
7388 | int argc, const char *argv[], void *aux OVS_UNUSED) | |
7389 | { | |
7390 | struct ds reply = DS_EMPTY_INITIALIZER; | |
7391 | struct ofproto_dpif *ofproto; | |
7392 | ||
7393 | if (argc > 1) { | |
7394 | ofproto = ofproto_dpif_lookup(argv[1]); | |
7395 | if (!ofproto) { | |
bde9f75d EJ |
7396 | unixctl_command_reply_error(conn, "Unknown ofproto (use " |
7397 | "ofproto/list for help)"); | |
6814e51f BP |
7398 | return; |
7399 | } | |
7400 | ofproto_dpif_self_check__(ofproto, &reply); | |
7401 | } else { | |
7402 | HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) { | |
7403 | ofproto_dpif_self_check__(ofproto, &reply); | |
7404 | } | |
7405 | } | |
7406 | ||
bde9f75d | 7407 | unixctl_command_reply(conn, ds_cstr(&reply)); |
6814e51f BP |
7408 | ds_destroy(&reply); |
7409 | } | |
7410 | ||
27022416 JP |
7411 | /* Store the current ofprotos in 'ofproto_shash'. Returns a sorted list |
7412 | * of the 'ofproto_shash' nodes. It is the responsibility of the caller | |
7413 | * to destroy 'ofproto_shash' and free the returned value. */ | |
7414 | static const struct shash_node ** | |
7415 | get_ofprotos(struct shash *ofproto_shash) | |
7416 | { | |
7417 | const struct ofproto_dpif *ofproto; | |
7418 | ||
7419 | HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) { | |
7420 | char *name = xasprintf("%s@%s", ofproto->up.type, ofproto->up.name); | |
7421 | shash_add_nocopy(ofproto_shash, name, ofproto); | |
7422 | } | |
7423 | ||
7424 | return shash_sort(ofproto_shash); | |
7425 | } | |
7426 | ||
7427 | static void | |
7428 | ofproto_unixctl_dpif_dump_dps(struct unixctl_conn *conn, int argc OVS_UNUSED, | |
7429 | const char *argv[] OVS_UNUSED, | |
7430 | void *aux OVS_UNUSED) | |
7431 | { | |
7432 | struct ds ds = DS_EMPTY_INITIALIZER; | |
7433 | struct shash ofproto_shash; | |
7434 | const struct shash_node **sorted_ofprotos; | |
7435 | int i; | |
7436 | ||
7437 | shash_init(&ofproto_shash); | |
7438 | sorted_ofprotos = get_ofprotos(&ofproto_shash); | |
7439 | for (i = 0; i < shash_count(&ofproto_shash); i++) { | |
7440 | const struct shash_node *node = sorted_ofprotos[i]; | |
7441 | ds_put_format(&ds, "%s\n", node->name); | |
7442 | } | |
7443 | ||
7444 | shash_destroy(&ofproto_shash); | |
7445 | free(sorted_ofprotos); | |
7446 | ||
7447 | unixctl_command_reply(conn, ds_cstr(&ds)); | |
7448 | ds_destroy(&ds); | |
7449 | } | |
7450 | ||
7451 | static void | |
7452 | show_dp_format(const struct ofproto_dpif *ofproto, struct ds *ds) | |
7453 | { | |
7454 | struct dpif_dp_stats s; | |
7455 | const struct shash_node **ports; | |
7456 | int i; | |
7457 | ||
acf60855 | 7458 | dpif_get_dp_stats(ofproto->backer->dpif, &s); |
27022416 | 7459 | |
acf60855 JP |
7460 | ds_put_format(ds, "%s (%s):\n", ofproto->up.name, |
7461 | dpif_name(ofproto->backer->dpif)); | |
7462 | /* xxx It would be better to show bridge-specific stats instead | |
7463 | * xxx of dp ones. */ | |
27022416 JP |
7464 | ds_put_format(ds, |
7465 | "\tlookups: hit:%"PRIu64" missed:%"PRIu64" lost:%"PRIu64"\n", | |
7466 | s.n_hit, s.n_missed, s.n_lost); | |
acf60855 JP |
7467 | ds_put_format(ds, "\tflows: %zu\n", |
7468 | hmap_count(&ofproto->subfacets)); | |
27022416 JP |
7469 | |
7470 | ports = shash_sort(&ofproto->up.port_by_name); | |
7471 | for (i = 0; i < shash_count(&ofproto->up.port_by_name); i++) { | |
7472 | const struct shash_node *node = ports[i]; | |
7473 | struct ofport *ofport = node->data; | |
7474 | const char *name = netdev_get_name(ofport->netdev); | |
7475 | const char *type = netdev_get_type(ofport->netdev); | |
7476 | ||
7477 | ds_put_format(ds, "\t%s %u/%u:", name, ofport->ofp_port, | |
7478 | ofp_port_to_odp_port(ofproto, ofport->ofp_port)); | |
7479 | if (strcmp(type, "system")) { | |
7480 | struct netdev *netdev; | |
7481 | int error; | |
7482 | ||
7483 | ds_put_format(ds, " (%s", type); | |
7484 | ||
7485 | error = netdev_open(name, type, &netdev); | |
7486 | if (!error) { | |
7487 | struct smap config; | |
7488 | ||
7489 | smap_init(&config); | |
7490 | error = netdev_get_config(netdev, &config); | |
7491 | if (!error) { | |
7492 | const struct smap_node **nodes; | |
7493 | size_t i; | |
7494 | ||
7495 | nodes = smap_sort(&config); | |
7496 | for (i = 0; i < smap_count(&config); i++) { | |
7497 | const struct smap_node *node = nodes[i]; | |
7498 | ds_put_format(ds, "%c %s=%s", i ? ',' : ':', | |
7499 | node->key, node->value); | |
7500 | } | |
7501 | free(nodes); | |
7502 | } | |
7503 | smap_destroy(&config); | |
7504 | ||
7505 | netdev_close(netdev); | |
7506 | } | |
7507 | ds_put_char(ds, ')'); | |
7508 | } | |
7509 | ds_put_char(ds, '\n'); | |
7510 | } | |
7511 | free(ports); | |
7512 | } | |
7513 | ||
7514 | static void | |
7515 | ofproto_unixctl_dpif_show(struct unixctl_conn *conn, int argc, | |
7516 | const char *argv[], void *aux OVS_UNUSED) | |
7517 | { | |
7518 | struct ds ds = DS_EMPTY_INITIALIZER; | |
7519 | const struct ofproto_dpif *ofproto; | |
7520 | ||
7521 | if (argc > 1) { | |
7522 | int i; | |
7523 | for (i = 1; i < argc; i++) { | |
7524 | ofproto = ofproto_dpif_lookup(argv[i]); | |
7525 | if (!ofproto) { | |
7526 | ds_put_format(&ds, "Unknown bridge %s (use dpif/dump-dps " | |
7527 | "for help)", argv[i]); | |
7528 | unixctl_command_reply_error(conn, ds_cstr(&ds)); | |
7529 | return; | |
7530 | } | |
7531 | show_dp_format(ofproto, &ds); | |
7532 | } | |
7533 | } else { | |
7534 | struct shash ofproto_shash; | |
7535 | const struct shash_node **sorted_ofprotos; | |
7536 | int i; | |
7537 | ||
7538 | shash_init(&ofproto_shash); | |
7539 | sorted_ofprotos = get_ofprotos(&ofproto_shash); | |
7540 | for (i = 0; i < shash_count(&ofproto_shash); i++) { | |
7541 | const struct shash_node *node = sorted_ofprotos[i]; | |
7542 | show_dp_format(node->data, &ds); | |
7543 | } | |
7544 | ||
7545 | shash_destroy(&ofproto_shash); | |
7546 | free(sorted_ofprotos); | |
7547 | } | |
7548 | ||
7549 | unixctl_command_reply(conn, ds_cstr(&ds)); | |
7550 | ds_destroy(&ds); | |
7551 | } | |
7552 | ||
7553 | static void | |
7554 | ofproto_unixctl_dpif_dump_flows(struct unixctl_conn *conn, | |
7555 | int argc OVS_UNUSED, const char *argv[], | |
7556 | void *aux OVS_UNUSED) | |
7557 | { | |
7558 | struct ds ds = DS_EMPTY_INITIALIZER; | |
7559 | const struct ofproto_dpif *ofproto; | |
7560 | struct subfacet *subfacet; | |
7561 | ||
7562 | ofproto = ofproto_dpif_lookup(argv[1]); | |
7563 | if (!ofproto) { | |
7564 | unixctl_command_reply_error(conn, "no such bridge"); | |
7565 | return; | |
7566 | } | |
7567 | ||
7568 | HMAP_FOR_EACH (subfacet, hmap_node, &ofproto->subfacets) { | |
7569 | struct odputil_keybuf keybuf; | |
7570 | struct ofpbuf key; | |
7571 | ||
7572 | subfacet_get_key(subfacet, &keybuf, &key); | |
7573 | odp_flow_key_format(key.data, key.size, &ds); | |
7574 | ||
7575 | ds_put_format(&ds, ", packets:%"PRIu64", bytes:%"PRIu64", used:", | |
7576 | subfacet->dp_packet_count, subfacet->dp_byte_count); | |
7577 | if (subfacet->used) { | |
7578 | ds_put_format(&ds, "%.3fs", | |
7579 | (time_msec() - subfacet->used) / 1000.0); | |
7580 | } else { | |
7581 | ds_put_format(&ds, "never"); | |
7582 | } | |
7583 | if (subfacet->facet->tcp_flags) { | |
7584 | ds_put_cstr(&ds, ", flags:"); | |
7585 | packet_format_tcp_flags(&ds, subfacet->facet->tcp_flags); | |
7586 | } | |
7587 | ||
7588 | ds_put_cstr(&ds, ", actions:"); | |
7589 | format_odp_actions(&ds, subfacet->actions, subfacet->actions_len); | |
7590 | ds_put_char(&ds, '\n'); | |
7591 | } | |
7592 | ||
7593 | unixctl_command_reply(conn, ds_cstr(&ds)); | |
7594 | ds_destroy(&ds); | |
7595 | } | |
7596 | ||
7597 | static void | |
7598 | ofproto_unixctl_dpif_del_flows(struct unixctl_conn *conn, | |
7599 | int argc OVS_UNUSED, const char *argv[], | |
7600 | void *aux OVS_UNUSED) | |
7601 | { | |
7602 | struct ds ds = DS_EMPTY_INITIALIZER; | |
7603 | struct ofproto_dpif *ofproto; | |
7604 | ||
7605 | ofproto = ofproto_dpif_lookup(argv[1]); | |
7606 | if (!ofproto) { | |
7607 | unixctl_command_reply_error(conn, "no such bridge"); | |
7608 | return; | |
7609 | } | |
7610 | ||
7611 | flush(&ofproto->up); | |
7612 | ||
7613 | unixctl_command_reply(conn, ds_cstr(&ds)); | |
7614 | ds_destroy(&ds); | |
7615 | } | |
7616 | ||
abe529af BP |
7617 | static void |
7618 | ofproto_dpif_unixctl_init(void) | |
7619 | { | |
7620 | static bool registered; | |
7621 | if (registered) { | |
7622 | return; | |
7623 | } | |
7624 | registered = true; | |
7625 | ||
0e15264f BP |
7626 | unixctl_command_register( |
7627 | "ofproto/trace", | |
7628 | "bridge {tun_id in_port packet | odp_flow [-generate]}", | |
aa3080c9 | 7629 | 2, 5, ofproto_unixctl_trace, NULL); |
96e466a3 | 7630 | unixctl_command_register("fdb/flush", "[bridge]", 0, 1, |
0e15264f BP |
7631 | ofproto_unixctl_fdb_flush, NULL); |
7632 | unixctl_command_register("fdb/show", "bridge", 1, 1, | |
7633 | ofproto_unixctl_fdb_show, NULL); | |
7634 | unixctl_command_register("ofproto/clog", "", 0, 0, | |
7635 | ofproto_dpif_clog, NULL); | |
7636 | unixctl_command_register("ofproto/unclog", "", 0, 0, | |
7637 | ofproto_dpif_unclog, NULL); | |
6814e51f BP |
7638 | unixctl_command_register("ofproto/self-check", "[bridge]", 0, 1, |
7639 | ofproto_dpif_self_check, NULL); | |
27022416 JP |
7640 | unixctl_command_register("dpif/dump-dps", "", 0, 0, |
7641 | ofproto_unixctl_dpif_dump_dps, NULL); | |
7642 | unixctl_command_register("dpif/show", "[bridge]", 0, INT_MAX, | |
7643 | ofproto_unixctl_dpif_show, NULL); | |
7644 | unixctl_command_register("dpif/dump-flows", "bridge", 1, 1, | |
7645 | ofproto_unixctl_dpif_dump_flows, NULL); | |
7646 | unixctl_command_register("dpif/del-flows", "bridge", 1, 1, | |
7647 | ofproto_unixctl_dpif_del_flows, NULL); | |
abe529af BP |
7648 | } |
7649 | \f | |
52a90c29 BP |
7650 | /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.) |
7651 | * | |
7652 | * This is deprecated. It is only for compatibility with broken device drivers | |
7653 | * in old versions of Linux that do not properly support VLANs when VLAN | |
7654 | * devices are not used. When broken device drivers are no longer in | |
7655 | * widespread use, we will delete these interfaces. */ | |
7656 | ||
7657 | static int | |
7658 | set_realdev(struct ofport *ofport_, uint16_t realdev_ofp_port, int vid) | |
7659 | { | |
7660 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport_->ofproto); | |
7661 | struct ofport_dpif *ofport = ofport_dpif_cast(ofport_); | |
7662 | ||
7663 | if (realdev_ofp_port == ofport->realdev_ofp_port | |
7664 | && vid == ofport->vlandev_vid) { | |
7665 | return 0; | |
7666 | } | |
7667 | ||
3c4a309c | 7668 | ofproto->need_revalidate = REV_RECONFIGURE; |
52a90c29 BP |
7669 | |
7670 | if (ofport->realdev_ofp_port) { | |
7671 | vsp_remove(ofport); | |
7672 | } | |
7673 | if (realdev_ofp_port && ofport->bundle) { | |
7674 | /* vlandevs are enslaved to their realdevs, so they are not allowed to | |
7675 | * themselves be part of a bundle. */ | |
7676 | bundle_set(ofport->up.ofproto, ofport->bundle, NULL); | |
7677 | } | |
7678 | ||
7679 | ofport->realdev_ofp_port = realdev_ofp_port; | |
7680 | ofport->vlandev_vid = vid; | |
7681 | ||
7682 | if (realdev_ofp_port) { | |
7683 | vsp_add(ofport, realdev_ofp_port, vid); | |
7684 | } | |
7685 | ||
7686 | return 0; | |
7687 | } | |
7688 | ||
7689 | static uint32_t | |
7690 | hash_realdev_vid(uint16_t realdev_ofp_port, int vid) | |
7691 | { | |
7692 | return hash_2words(realdev_ofp_port, vid); | |
7693 | } | |
7694 | ||
40e05935 BP |
7695 | /* Returns the ODP port number of the Linux VLAN device that corresponds to |
7696 | * 'vlan_tci' on the network device with port number 'realdev_odp_port' in | |
7697 | * 'ofproto'. For example, given 'realdev_odp_port' of eth0 and 'vlan_tci' 9, | |
7698 | * it would return the port number of eth0.9. | |
7699 | * | |
7700 | * Unless VLAN splinters are enabled for port 'realdev_odp_port', this | |
7701 | * function just returns its 'realdev_odp_port' argument. */ | |
52a90c29 BP |
7702 | static uint32_t |
7703 | vsp_realdev_to_vlandev(const struct ofproto_dpif *ofproto, | |
7704 | uint32_t realdev_odp_port, ovs_be16 vlan_tci) | |
7705 | { | |
7706 | if (!hmap_is_empty(&ofproto->realdev_vid_map)) { | |
e1b1d06a | 7707 | uint16_t realdev_ofp_port; |
52a90c29 BP |
7708 | int vid = vlan_tci_to_vid(vlan_tci); |
7709 | const struct vlan_splinter *vsp; | |
7710 | ||
e1b1d06a | 7711 | realdev_ofp_port = odp_port_to_ofp_port(ofproto, realdev_odp_port); |
52a90c29 BP |
7712 | HMAP_FOR_EACH_WITH_HASH (vsp, realdev_vid_node, |
7713 | hash_realdev_vid(realdev_ofp_port, vid), | |
7714 | &ofproto->realdev_vid_map) { | |
7715 | if (vsp->realdev_ofp_port == realdev_ofp_port | |
7716 | && vsp->vid == vid) { | |
e1b1d06a | 7717 | return ofp_port_to_odp_port(ofproto, vsp->vlandev_ofp_port); |
52a90c29 BP |
7718 | } |
7719 | } | |
7720 | } | |
7721 | return realdev_odp_port; | |
7722 | } | |
7723 | ||
7724 | static struct vlan_splinter * | |
7725 | vlandev_find(const struct ofproto_dpif *ofproto, uint16_t vlandev_ofp_port) | |
7726 | { | |
7727 | struct vlan_splinter *vsp; | |
7728 | ||
7729 | HMAP_FOR_EACH_WITH_HASH (vsp, vlandev_node, hash_int(vlandev_ofp_port, 0), | |
7730 | &ofproto->vlandev_map) { | |
7731 | if (vsp->vlandev_ofp_port == vlandev_ofp_port) { | |
7732 | return vsp; | |
7733 | } | |
7734 | } | |
7735 | ||
7736 | return NULL; | |
7737 | } | |
7738 | ||
40e05935 BP |
7739 | /* Returns the OpenFlow port number of the "real" device underlying the Linux |
7740 | * VLAN device with OpenFlow port number 'vlandev_ofp_port' and stores the | |
7741 | * VLAN VID of the Linux VLAN device in '*vid'. For example, given | |
7742 | * 'vlandev_ofp_port' of eth0.9, it would return the OpenFlow port number of | |
7743 | * eth0 and store 9 in '*vid'. | |
7744 | * | |
7745 | * Returns 0 and does not modify '*vid' if 'vlandev_ofp_port' is not a Linux | |
7746 | * VLAN device. Unless VLAN splinters are enabled, this is what this function | |
7747 | * always does.*/ | |
52a90c29 BP |
7748 | static uint16_t |
7749 | vsp_vlandev_to_realdev(const struct ofproto_dpif *ofproto, | |
40e05935 | 7750 | uint16_t vlandev_ofp_port, int *vid) |
52a90c29 BP |
7751 | { |
7752 | if (!hmap_is_empty(&ofproto->vlandev_map)) { | |
7753 | const struct vlan_splinter *vsp; | |
7754 | ||
7755 | vsp = vlandev_find(ofproto, vlandev_ofp_port); | |
7756 | if (vsp) { | |
7757 | if (vid) { | |
7758 | *vid = vsp->vid; | |
7759 | } | |
7760 | return vsp->realdev_ofp_port; | |
7761 | } | |
7762 | } | |
7763 | return 0; | |
7764 | } | |
7765 | ||
b98d8985 BP |
7766 | /* Given 'flow', a flow representing a packet received on 'ofproto', checks |
7767 | * whether 'flow->in_port' represents a Linux VLAN device. If so, changes | |
7768 | * 'flow->in_port' to the "real" device backing the VLAN device, sets | |
7769 | * 'flow->vlan_tci' to the VLAN VID, and returns true. Otherwise (which is | |
7770 | * always the case unless VLAN splinters are enabled), returns false without | |
7771 | * making any changes. */ | |
7772 | static bool | |
7773 | vsp_adjust_flow(const struct ofproto_dpif *ofproto, struct flow *flow) | |
7774 | { | |
7775 | uint16_t realdev; | |
7776 | int vid; | |
7777 | ||
7778 | realdev = vsp_vlandev_to_realdev(ofproto, flow->in_port, &vid); | |
7779 | if (!realdev) { | |
7780 | return false; | |
7781 | } | |
7782 | ||
7783 | /* Cause the flow to be processed as if it came in on the real device with | |
7784 | * the VLAN device's VLAN ID. */ | |
7785 | flow->in_port = realdev; | |
7786 | flow->vlan_tci = htons((vid & VLAN_VID_MASK) | VLAN_CFI); | |
7787 | return true; | |
7788 | } | |
7789 | ||
52a90c29 BP |
7790 | static void |
7791 | vsp_remove(struct ofport_dpif *port) | |
7792 | { | |
7793 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto); | |
7794 | struct vlan_splinter *vsp; | |
7795 | ||
7796 | vsp = vlandev_find(ofproto, port->up.ofp_port); | |
7797 | if (vsp) { | |
7798 | hmap_remove(&ofproto->vlandev_map, &vsp->vlandev_node); | |
7799 | hmap_remove(&ofproto->realdev_vid_map, &vsp->realdev_vid_node); | |
7800 | free(vsp); | |
7801 | ||
7802 | port->realdev_ofp_port = 0; | |
7803 | } else { | |
7804 | VLOG_ERR("missing vlan device record"); | |
7805 | } | |
7806 | } | |
7807 | ||
7808 | static void | |
7809 | vsp_add(struct ofport_dpif *port, uint16_t realdev_ofp_port, int vid) | |
7810 | { | |
7811 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto); | |
7812 | ||
7813 | if (!vsp_vlandev_to_realdev(ofproto, port->up.ofp_port, NULL) | |
7814 | && (vsp_realdev_to_vlandev(ofproto, realdev_ofp_port, htons(vid)) | |
7815 | == realdev_ofp_port)) { | |
7816 | struct vlan_splinter *vsp; | |
7817 | ||
7818 | vsp = xmalloc(sizeof *vsp); | |
7819 | hmap_insert(&ofproto->vlandev_map, &vsp->vlandev_node, | |
7820 | hash_int(port->up.ofp_port, 0)); | |
7821 | hmap_insert(&ofproto->realdev_vid_map, &vsp->realdev_vid_node, | |
7822 | hash_realdev_vid(realdev_ofp_port, vid)); | |
7823 | vsp->realdev_ofp_port = realdev_ofp_port; | |
7824 | vsp->vlandev_ofp_port = port->up.ofp_port; | |
7825 | vsp->vid = vid; | |
7826 | ||
7827 | port->realdev_ofp_port = realdev_ofp_port; | |
7828 | } else { | |
7829 | VLOG_ERR("duplicate vlan device record"); | |
7830 | } | |
7831 | } | |
e1b1d06a JP |
7832 | |
7833 | static uint32_t | |
7834 | ofp_port_to_odp_port(const struct ofproto_dpif *ofproto, uint16_t ofp_port) | |
7835 | { | |
7836 | const struct ofport_dpif *ofport = get_ofp_port(ofproto, ofp_port); | |
7837 | return ofport ? ofport->odp_port : OVSP_NONE; | |
7838 | } | |
7839 | ||
acf60855 JP |
7840 | static struct ofport_dpif * |
7841 | odp_port_to_ofport(const struct dpif_backer *backer, uint32_t odp_port) | |
e1b1d06a JP |
7842 | { |
7843 | struct ofport_dpif *port; | |
7844 | ||
7845 | HMAP_FOR_EACH_IN_BUCKET (port, odp_port_node, | |
7846 | hash_int(odp_port, 0), | |
acf60855 | 7847 | &backer->odp_to_ofport_map) { |
e1b1d06a | 7848 | if (port->odp_port == odp_port) { |
acf60855 | 7849 | return port; |
e1b1d06a JP |
7850 | } |
7851 | } | |
7852 | ||
acf60855 JP |
7853 | return NULL; |
7854 | } | |
7855 | ||
7856 | static uint16_t | |
7857 | odp_port_to_ofp_port(const struct ofproto_dpif *ofproto, uint32_t odp_port) | |
7858 | { | |
7859 | struct ofport_dpif *port; | |
7860 | ||
7861 | port = odp_port_to_ofport(ofproto->backer, odp_port); | |
7862 | if (port && ofproto == ofproto_dpif_cast(port->up.ofproto)) { | |
7863 | return port->up.ofp_port; | |
7864 | } else { | |
7865 | return OFPP_NONE; | |
7866 | } | |
e1b1d06a JP |
7867 | } |
7868 | ||
abe529af | 7869 | const struct ofproto_class ofproto_dpif_class = { |
b0408fca | 7870 | init, |
abe529af BP |
7871 | enumerate_types, |
7872 | enumerate_names, | |
7873 | del, | |
0aeaabc8 | 7874 | port_open_type, |
acf60855 JP |
7875 | type_run, |
7876 | type_run_fast, | |
7877 | type_wait, | |
abe529af BP |
7878 | alloc, |
7879 | construct, | |
7880 | destruct, | |
7881 | dealloc, | |
7882 | run, | |
5fcc0d00 | 7883 | run_fast, |
abe529af | 7884 | wait, |
0d085684 | 7885 | get_memory_usage, |
abe529af | 7886 | flush, |
6c1491fb BP |
7887 | get_features, |
7888 | get_tables, | |
abe529af BP |
7889 | port_alloc, |
7890 | port_construct, | |
7891 | port_destruct, | |
7892 | port_dealloc, | |
7893 | port_modified, | |
7894 | port_reconfigured, | |
7895 | port_query_by_name, | |
7896 | port_add, | |
7897 | port_del, | |
6527c598 | 7898 | port_get_stats, |
abe529af BP |
7899 | port_dump_start, |
7900 | port_dump_next, | |
7901 | port_dump_done, | |
7902 | port_poll, | |
7903 | port_poll_wait, | |
7904 | port_is_lacp_current, | |
0ab6decf | 7905 | NULL, /* rule_choose_table */ |
abe529af BP |
7906 | rule_alloc, |
7907 | rule_construct, | |
7908 | rule_destruct, | |
7909 | rule_dealloc, | |
abe529af BP |
7910 | rule_get_stats, |
7911 | rule_execute, | |
7912 | rule_modify_actions, | |
7257b535 | 7913 | set_frag_handling, |
abe529af BP |
7914 | packet_out, |
7915 | set_netflow, | |
7916 | get_netflow_ids, | |
7917 | set_sflow, | |
7918 | set_cfm, | |
a5610457 | 7919 | get_cfm_fault, |
1c0333b6 | 7920 | get_cfm_opup, |
1de11730 | 7921 | get_cfm_remote_mpids, |
3967a833 | 7922 | get_cfm_health, |
21f7563c JP |
7923 | set_stp, |
7924 | get_stp_status, | |
7925 | set_stp_port, | |
7926 | get_stp_port_status, | |
8b36f51e | 7927 | set_queues, |
abe529af BP |
7928 | bundle_set, |
7929 | bundle_remove, | |
7930 | mirror_set, | |
9d24de3b | 7931 | mirror_get_stats, |
abe529af BP |
7932 | set_flood_vlans, |
7933 | is_mirror_output_bundle, | |
8402c74b | 7934 | forward_bpdu_changed, |
e764773c | 7935 | set_mac_idle_time, |
52a90c29 | 7936 | set_realdev, |
abe529af | 7937 | }; |