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abe529af BP |
1 | /* |
2 | * Copyright (c) 2009, 2010, 2011 Nicira Networks. | |
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 BP |
36 | #include "mac-learning.h" |
37 | #include "multipath.h" | |
38 | #include "netdev.h" | |
39 | #include "netlink.h" | |
40 | #include "nx-match.h" | |
41 | #include "odp-util.h" | |
42 | #include "ofp-util.h" | |
43 | #include "ofpbuf.h" | |
44 | #include "ofp-print.h" | |
bae473fe | 45 | #include "ofproto-dpif-sflow.h" |
abe529af BP |
46 | #include "poll-loop.h" |
47 | #include "timer.h" | |
6c1491fb | 48 | #include "unaligned.h" |
abe529af BP |
49 | #include "unixctl.h" |
50 | #include "vlan-bitmap.h" | |
51 | #include "vlog.h" | |
52 | ||
53 | VLOG_DEFINE_THIS_MODULE(ofproto_dpif); | |
54 | ||
55 | COVERAGE_DEFINE(ofproto_dpif_ctlr_action); | |
56 | COVERAGE_DEFINE(ofproto_dpif_expired); | |
57 | COVERAGE_DEFINE(ofproto_dpif_no_packet_in); | |
58 | COVERAGE_DEFINE(ofproto_dpif_xlate); | |
59 | COVERAGE_DEFINE(facet_changed_rule); | |
60 | COVERAGE_DEFINE(facet_invalidated); | |
61 | COVERAGE_DEFINE(facet_revalidate); | |
62 | COVERAGE_DEFINE(facet_unexpected); | |
63 | ||
29901626 | 64 | /* Maximum depth of flow table recursion (due to resubmit actions) in a |
abe529af BP |
65 | * flow translation. */ |
66 | #define MAX_RESUBMIT_RECURSION 16 | |
67 | ||
9cdaaebe BP |
68 | /* Number of implemented OpenFlow tables. */ |
69 | enum { N_TABLES = 255 }; | |
70 | BUILD_ASSERT_DECL(N_TABLES >= 1 && N_TABLES <= 255); | |
71 | ||
abe529af BP |
72 | struct ofport_dpif; |
73 | struct ofproto_dpif; | |
74 | ||
75 | struct rule_dpif { | |
76 | struct rule up; | |
77 | ||
78 | long long int used; /* Time last used; time created if not used. */ | |
79 | ||
80 | /* These statistics: | |
81 | * | |
82 | * - Do include packets and bytes from facets that have been deleted or | |
83 | * whose own statistics have been folded into the rule. | |
84 | * | |
85 | * - Do include packets and bytes sent "by hand" that were accounted to | |
86 | * the rule without any facet being involved (this is a rare corner | |
87 | * case in rule_execute()). | |
88 | * | |
89 | * - Do not include packet or bytes that can be obtained from any facet's | |
90 | * packet_count or byte_count member or that can be obtained from the | |
91 | * datapath by, e.g., dpif_flow_get() for any facet. | |
92 | */ | |
93 | uint64_t packet_count; /* Number of packets received. */ | |
94 | uint64_t byte_count; /* Number of bytes received. */ | |
95 | ||
54a9cbc9 BP |
96 | tag_type tag; /* Caches rule_calculate_tag() result. */ |
97 | ||
abe529af BP |
98 | struct list facets; /* List of "struct facet"s. */ |
99 | }; | |
100 | ||
101 | static struct rule_dpif *rule_dpif_cast(const struct rule *rule) | |
102 | { | |
103 | return rule ? CONTAINER_OF(rule, struct rule_dpif, up) : NULL; | |
104 | } | |
105 | ||
29901626 BP |
106 | static struct rule_dpif *rule_dpif_lookup(struct ofproto_dpif *, |
107 | const struct flow *, uint8_t table); | |
abe529af BP |
108 | |
109 | #define MAX_MIRRORS 32 | |
110 | typedef uint32_t mirror_mask_t; | |
111 | #define MIRROR_MASK_C(X) UINT32_C(X) | |
112 | BUILD_ASSERT_DECL(sizeof(mirror_mask_t) * CHAR_BIT >= MAX_MIRRORS); | |
113 | struct ofmirror { | |
114 | struct ofproto_dpif *ofproto; /* Owning ofproto. */ | |
115 | size_t idx; /* In ofproto's "mirrors" array. */ | |
116 | void *aux; /* Key supplied by ofproto's client. */ | |
117 | char *name; /* Identifier for log messages. */ | |
118 | ||
119 | /* Selection criteria. */ | |
120 | struct hmapx srcs; /* Contains "struct ofbundle *"s. */ | |
121 | struct hmapx dsts; /* Contains "struct ofbundle *"s. */ | |
122 | unsigned long *vlans; /* Bitmap of chosen VLANs, NULL selects all. */ | |
123 | ||
124 | /* Output (mutually exclusive). */ | |
125 | struct ofbundle *out; /* Output port or NULL. */ | |
126 | int out_vlan; /* Output VLAN or -1. */ | |
127 | }; | |
128 | ||
129 | static void mirror_destroy(struct ofmirror *); | |
130 | ||
131 | /* A group of one or more OpenFlow ports. */ | |
132 | #define OFBUNDLE_FLOOD ((struct ofbundle *) 1) | |
133 | struct ofbundle { | |
134 | struct ofproto_dpif *ofproto; /* Owning ofproto. */ | |
135 | struct hmap_node hmap_node; /* In struct ofproto's "bundles" hmap. */ | |
136 | void *aux; /* Key supplied by ofproto's client. */ | |
137 | char *name; /* Identifier for log messages. */ | |
138 | ||
139 | /* Configuration. */ | |
140 | struct list ports; /* Contains "struct ofport"s. */ | |
141 | int vlan; /* -1=trunk port, else a 12-bit VLAN ID. */ | |
142 | unsigned long *trunks; /* Bitmap of trunked VLANs, if 'vlan' == -1. | |
143 | * NULL if all VLANs are trunked. */ | |
144 | struct lacp *lacp; /* LACP if LACP is enabled, otherwise NULL. */ | |
145 | struct bond *bond; /* Nonnull iff more than one port. */ | |
146 | ||
147 | /* Status. */ | |
148 | bool floodable; /* True if no port has OFPPC_NO_FLOOD set. */ | |
149 | ||
150 | /* Port mirroring info. */ | |
151 | mirror_mask_t src_mirrors; /* Mirrors triggered when packet received. */ | |
152 | mirror_mask_t dst_mirrors; /* Mirrors triggered when packet sent. */ | |
153 | mirror_mask_t mirror_out; /* Mirrors that output to this bundle. */ | |
154 | }; | |
155 | ||
156 | static void bundle_remove(struct ofport *); | |
157 | static void bundle_destroy(struct ofbundle *); | |
158 | static void bundle_del_port(struct ofport_dpif *); | |
159 | static void bundle_run(struct ofbundle *); | |
160 | static void bundle_wait(struct ofbundle *); | |
161 | ||
162 | struct action_xlate_ctx { | |
163 | /* action_xlate_ctx_init() initializes these members. */ | |
164 | ||
165 | /* The ofproto. */ | |
166 | struct ofproto_dpif *ofproto; | |
167 | ||
168 | /* Flow to which the OpenFlow actions apply. xlate_actions() will modify | |
169 | * this flow when actions change header fields. */ | |
170 | struct flow flow; | |
171 | ||
172 | /* The packet corresponding to 'flow', or a null pointer if we are | |
173 | * revalidating without a packet to refer to. */ | |
174 | const struct ofpbuf *packet; | |
175 | ||
75a75043 BP |
176 | /* Should OFPP_NORMAL MAC learning and NXAST_LEARN actions execute? We |
177 | * want to execute them if we are actually processing a packet, or if we | |
178 | * are accounting for packets that the datapath has processed, but not if | |
179 | * we are just revalidating. */ | |
180 | bool may_learn; | |
181 | ||
abe529af BP |
182 | /* If nonnull, called just before executing a resubmit action. |
183 | * | |
184 | * This is normally null so the client has to set it manually after | |
185 | * calling action_xlate_ctx_init(). */ | |
186 | void (*resubmit_hook)(struct action_xlate_ctx *, struct rule_dpif *); | |
187 | ||
abe529af BP |
188 | /* xlate_actions() initializes and uses these members. The client might want |
189 | * to look at them after it returns. */ | |
190 | ||
191 | struct ofpbuf *odp_actions; /* Datapath actions. */ | |
75a75043 | 192 | tag_type tags; /* Tags associated with actions. */ |
abe529af BP |
193 | bool may_set_up_flow; /* True ordinarily; false if the actions must |
194 | * be reassessed for every packet. */ | |
75a75043 BP |
195 | bool has_learn; /* Actions include NXAST_LEARN? */ |
196 | bool has_normal; /* Actions output to OFPP_NORMAL? */ | |
abe529af BP |
197 | uint16_t nf_output_iface; /* Output interface index for NetFlow. */ |
198 | ||
199 | /* xlate_actions() initializes and uses these members, but the client has no | |
200 | * reason to look at them. */ | |
201 | ||
202 | int recurse; /* Recursion level, via xlate_table_action. */ | |
afabef2b | 203 | uint32_t priority; /* Current flow priority. 0 if none. */ |
b3e9b2ed EJ |
204 | struct flow base_flow; /* Flow at the last commit. */ |
205 | uint32_t base_priority; /* Priority at the last commit. */ | |
29901626 | 206 | uint8_t table_id; /* OpenFlow table ID where flow was found. */ |
abe529af BP |
207 | }; |
208 | ||
209 | static void action_xlate_ctx_init(struct action_xlate_ctx *, | |
210 | struct ofproto_dpif *, const struct flow *, | |
211 | const struct ofpbuf *); | |
212 | static struct ofpbuf *xlate_actions(struct action_xlate_ctx *, | |
213 | const union ofp_action *in, size_t n_in); | |
214 | ||
215 | /* An exact-match instantiation of an OpenFlow flow. */ | |
216 | struct facet { | |
217 | long long int used; /* Time last used; time created if not used. */ | |
218 | ||
219 | /* These statistics: | |
220 | * | |
221 | * - Do include packets and bytes sent "by hand", e.g. with | |
222 | * dpif_execute(). | |
223 | * | |
224 | * - Do include packets and bytes that were obtained from the datapath | |
907a4c5e | 225 | * when its statistics were reset (e.g. dpif_flow_put() with |
abe529af | 226 | * DPIF_FP_ZERO_STATS). |
abe529af BP |
227 | */ |
228 | uint64_t packet_count; /* Number of packets received. */ | |
229 | uint64_t byte_count; /* Number of bytes received. */ | |
230 | ||
231 | uint64_t dp_packet_count; /* Last known packet count in the datapath. */ | |
232 | uint64_t dp_byte_count; /* Last known byte count in the datapath. */ | |
233 | ||
234 | uint64_t rs_packet_count; /* Packets pushed to resubmit children. */ | |
235 | uint64_t rs_byte_count; /* Bytes pushed to resubmit children. */ | |
236 | long long int rs_used; /* Used time pushed to resubmit children. */ | |
237 | ||
907a4c5e | 238 | uint64_t accounted_bytes; /* Bytes processed by facet_account(). */ |
abe529af BP |
239 | |
240 | struct hmap_node hmap_node; /* In owning ofproto's 'facets' hmap. */ | |
241 | struct list list_node; /* In owning rule's 'facets' list. */ | |
242 | struct rule_dpif *rule; /* Owning rule. */ | |
243 | struct flow flow; /* Exact-match flow. */ | |
244 | bool installed; /* Installed in datapath? */ | |
245 | bool may_install; /* True ordinarily; false if actions must | |
246 | * be reassessed for every packet. */ | |
75a75043 BP |
247 | bool has_learn; /* Actions include NXAST_LEARN? */ |
248 | bool has_normal; /* Actions output to OFPP_NORMAL? */ | |
abe529af BP |
249 | size_t actions_len; /* Number of bytes in actions[]. */ |
250 | struct nlattr *actions; /* Datapath actions. */ | |
251 | tag_type tags; /* Tags. */ | |
252 | struct netflow_flow nf_flow; /* Per-flow NetFlow tracking data. */ | |
253 | }; | |
254 | ||
255 | static struct facet *facet_create(struct rule_dpif *, const struct flow *, | |
256 | const struct ofpbuf *packet); | |
257 | static void facet_remove(struct ofproto_dpif *, struct facet *); | |
258 | static void facet_free(struct facet *); | |
259 | ||
260 | static struct facet *facet_find(struct ofproto_dpif *, const struct flow *); | |
261 | static struct facet *facet_lookup_valid(struct ofproto_dpif *, | |
262 | const struct flow *); | |
263 | static bool facet_revalidate(struct ofproto_dpif *, struct facet *); | |
264 | ||
265 | static void facet_execute(struct ofproto_dpif *, struct facet *, | |
266 | struct ofpbuf *packet); | |
267 | ||
268 | static int facet_put__(struct ofproto_dpif *, struct facet *, | |
269 | const struct nlattr *actions, size_t actions_len, | |
270 | struct dpif_flow_stats *); | |
271 | static void facet_install(struct ofproto_dpif *, struct facet *, | |
272 | bool zero_stats); | |
273 | static void facet_uninstall(struct ofproto_dpif *, struct facet *); | |
274 | static void facet_flush_stats(struct ofproto_dpif *, struct facet *); | |
275 | ||
276 | static void facet_make_actions(struct ofproto_dpif *, struct facet *, | |
277 | const struct ofpbuf *packet); | |
278 | static void facet_update_time(struct ofproto_dpif *, struct facet *, | |
279 | long long int used); | |
280 | static void facet_update_stats(struct ofproto_dpif *, struct facet *, | |
281 | const struct dpif_flow_stats *); | |
bbb5d219 | 282 | static void facet_reset_counters(struct facet *); |
3a88e544 | 283 | static void facet_reset_dp_stats(struct facet *, struct dpif_flow_stats *); |
abe529af | 284 | static void facet_push_stats(struct facet *); |
55af77bb | 285 | static void facet_account(struct ofproto_dpif *, struct facet *); |
abe529af BP |
286 | |
287 | static bool facet_is_controller_flow(struct facet *); | |
288 | ||
289 | static void flow_push_stats(const struct rule_dpif *, | |
290 | struct flow *, uint64_t packets, uint64_t bytes, | |
291 | long long int used); | |
292 | ||
54a9cbc9 BP |
293 | static uint32_t rule_calculate_tag(const struct flow *, |
294 | const struct flow_wildcards *, | |
295 | uint32_t basis); | |
296 | static void rule_invalidate(const struct rule_dpif *); | |
297 | ||
abe529af BP |
298 | struct ofport_dpif { |
299 | struct ofport up; | |
300 | ||
301 | uint32_t odp_port; | |
302 | struct ofbundle *bundle; /* Bundle that contains this port, if any. */ | |
303 | struct list bundle_node; /* In struct ofbundle's "ports" list. */ | |
304 | struct cfm *cfm; /* Connectivity Fault Management, if any. */ | |
305 | tag_type tag; /* Tag associated with this port. */ | |
00794817 | 306 | uint32_t bond_stable_id; /* stable_id to use as bond slave, or 0. */ |
015e08bc | 307 | bool may_enable; /* May be enabled in bonds. */ |
abe529af BP |
308 | }; |
309 | ||
310 | static struct ofport_dpif * | |
311 | ofport_dpif_cast(const struct ofport *ofport) | |
312 | { | |
313 | assert(ofport->ofproto->ofproto_class == &ofproto_dpif_class); | |
314 | return ofport ? CONTAINER_OF(ofport, struct ofport_dpif, up) : NULL; | |
315 | } | |
316 | ||
317 | static void port_run(struct ofport_dpif *); | |
318 | static void port_wait(struct ofport_dpif *); | |
a5610457 | 319 | static int set_cfm(struct ofport *, const struct cfm_settings *); |
abe529af | 320 | |
7ee20df1 BP |
321 | struct dpif_completion { |
322 | struct list list_node; | |
323 | struct ofoperation *op; | |
324 | }; | |
325 | ||
54a9cbc9 BP |
326 | /* Extra information about a classifier table. |
327 | * Currently used just for optimized flow revalidation. */ | |
328 | struct table_dpif { | |
329 | /* If either of these is nonnull, then this table has a form that allows | |
330 | * flows to be tagged to avoid revalidating most flows for the most common | |
331 | * kinds of flow table changes. */ | |
332 | struct cls_table *catchall_table; /* Table that wildcards all fields. */ | |
333 | struct cls_table *other_table; /* Table with any other wildcard set. */ | |
334 | uint32_t basis; /* Keeps each table's tags separate. */ | |
335 | }; | |
336 | ||
abe529af BP |
337 | struct ofproto_dpif { |
338 | struct ofproto up; | |
339 | struct dpif *dpif; | |
340 | int max_ports; | |
341 | ||
6c1491fb BP |
342 | /* Statistics. */ |
343 | uint64_t n_matches; | |
344 | ||
abe529af BP |
345 | /* Bridging. */ |
346 | struct netflow *netflow; | |
bae473fe | 347 | struct dpif_sflow *sflow; |
abe529af BP |
348 | struct hmap bundles; /* Contains "struct ofbundle"s. */ |
349 | struct mac_learning *ml; | |
350 | struct ofmirror *mirrors[MAX_MIRRORS]; | |
351 | bool has_bonded_bundles; | |
352 | ||
353 | /* Expiration. */ | |
354 | struct timer next_expiration; | |
355 | ||
356 | /* Facets. */ | |
357 | struct hmap facets; | |
54a9cbc9 BP |
358 | |
359 | /* Revalidation. */ | |
360 | struct table_dpif tables[N_TABLES]; | |
abe529af BP |
361 | bool need_revalidate; |
362 | struct tag_set revalidate_set; | |
7ee20df1 BP |
363 | |
364 | /* Support for debugging async flow mods. */ | |
365 | struct list completions; | |
daff3353 EJ |
366 | |
367 | bool has_bundle_action; /* True when the first bundle action appears. */ | |
abe529af BP |
368 | }; |
369 | ||
7ee20df1 BP |
370 | /* Defer flow mod completion until "ovs-appctl ofproto/unclog"? (Useful only |
371 | * for debugging the asynchronous flow_mod implementation.) */ | |
372 | static bool clogged; | |
373 | ||
abe529af BP |
374 | static void ofproto_dpif_unixctl_init(void); |
375 | ||
376 | static struct ofproto_dpif * | |
377 | ofproto_dpif_cast(const struct ofproto *ofproto) | |
378 | { | |
379 | assert(ofproto->ofproto_class == &ofproto_dpif_class); | |
380 | return CONTAINER_OF(ofproto, struct ofproto_dpif, up); | |
381 | } | |
382 | ||
383 | static struct ofport_dpif *get_ofp_port(struct ofproto_dpif *, | |
384 | uint16_t ofp_port); | |
385 | static struct ofport_dpif *get_odp_port(struct ofproto_dpif *, | |
386 | uint32_t odp_port); | |
387 | ||
388 | /* Packet processing. */ | |
389 | static void update_learning_table(struct ofproto_dpif *, | |
390 | const struct flow *, int vlan, | |
391 | struct ofbundle *); | |
392 | static bool is_admissible(struct ofproto_dpif *, const struct flow *, | |
393 | bool have_packet, tag_type *, int *vlanp, | |
394 | struct ofbundle **in_bundlep); | |
395 | static void handle_upcall(struct ofproto_dpif *, struct dpif_upcall *); | |
396 | ||
397 | /* Flow expiration. */ | |
398 | static int expire(struct ofproto_dpif *); | |
399 | ||
400 | /* Utilities. */ | |
b2fda3ef | 401 | static int send_packet(struct ofproto_dpif *, uint32_t odp_port, |
abe529af BP |
402 | const struct ofpbuf *packet); |
403 | ||
404 | /* Global variables. */ | |
405 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
406 | \f | |
407 | /* Factory functions. */ | |
408 | ||
409 | static void | |
410 | enumerate_types(struct sset *types) | |
411 | { | |
412 | dp_enumerate_types(types); | |
413 | } | |
414 | ||
415 | static int | |
416 | enumerate_names(const char *type, struct sset *names) | |
417 | { | |
418 | return dp_enumerate_names(type, names); | |
419 | } | |
420 | ||
421 | static int | |
422 | del(const char *type, const char *name) | |
423 | { | |
424 | struct dpif *dpif; | |
425 | int error; | |
426 | ||
427 | error = dpif_open(name, type, &dpif); | |
428 | if (!error) { | |
429 | error = dpif_delete(dpif); | |
430 | dpif_close(dpif); | |
431 | } | |
432 | return error; | |
433 | } | |
434 | \f | |
435 | /* Basic life-cycle. */ | |
436 | ||
437 | static struct ofproto * | |
438 | alloc(void) | |
439 | { | |
440 | struct ofproto_dpif *ofproto = xmalloc(sizeof *ofproto); | |
441 | return &ofproto->up; | |
442 | } | |
443 | ||
444 | static void | |
445 | dealloc(struct ofproto *ofproto_) | |
446 | { | |
447 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
448 | free(ofproto); | |
449 | } | |
450 | ||
451 | static int | |
073e2a6f | 452 | construct(struct ofproto *ofproto_, int *n_tablesp) |
abe529af BP |
453 | { |
454 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
455 | const char *name = ofproto->up.name; | |
456 | int error; | |
457 | int i; | |
458 | ||
459 | error = dpif_create_and_open(name, ofproto->up.type, &ofproto->dpif); | |
460 | if (error) { | |
461 | VLOG_ERR("failed to open datapath %s: %s", name, strerror(error)); | |
462 | return error; | |
463 | } | |
464 | ||
465 | ofproto->max_ports = dpif_get_max_ports(ofproto->dpif); | |
6c1491fb | 466 | ofproto->n_matches = 0; |
abe529af | 467 | |
be8194bb JG |
468 | dpif_flow_flush(ofproto->dpif); |
469 | dpif_recv_purge(ofproto->dpif); | |
470 | ||
abe529af BP |
471 | error = dpif_recv_set_mask(ofproto->dpif, |
472 | ((1u << DPIF_UC_MISS) | | |
473 | (1u << DPIF_UC_ACTION) | | |
474 | (1u << DPIF_UC_SAMPLE))); | |
475 | if (error) { | |
476 | VLOG_ERR("failed to listen on datapath %s: %s", name, strerror(error)); | |
477 | dpif_close(ofproto->dpif); | |
478 | return error; | |
479 | } | |
abe529af BP |
480 | |
481 | ofproto->netflow = NULL; | |
482 | ofproto->sflow = NULL; | |
483 | hmap_init(&ofproto->bundles); | |
484 | ofproto->ml = mac_learning_create(); | |
485 | for (i = 0; i < MAX_MIRRORS; i++) { | |
486 | ofproto->mirrors[i] = NULL; | |
487 | } | |
488 | ofproto->has_bonded_bundles = false; | |
489 | ||
490 | timer_set_duration(&ofproto->next_expiration, 1000); | |
491 | ||
492 | hmap_init(&ofproto->facets); | |
54a9cbc9 BP |
493 | |
494 | for (i = 0; i < N_TABLES; i++) { | |
495 | struct table_dpif *table = &ofproto->tables[i]; | |
496 | ||
497 | table->catchall_table = NULL; | |
498 | table->other_table = NULL; | |
499 | table->basis = random_uint32(); | |
500 | } | |
abe529af BP |
501 | ofproto->need_revalidate = false; |
502 | tag_set_init(&ofproto->revalidate_set); | |
503 | ||
7ee20df1 BP |
504 | list_init(&ofproto->completions); |
505 | ||
abe529af BP |
506 | ofproto_dpif_unixctl_init(); |
507 | ||
daff3353 EJ |
508 | ofproto->has_bundle_action = false; |
509 | ||
9cdaaebe | 510 | *n_tablesp = N_TABLES; |
abe529af BP |
511 | return 0; |
512 | } | |
513 | ||
7ee20df1 BP |
514 | static void |
515 | complete_operations(struct ofproto_dpif *ofproto) | |
516 | { | |
517 | struct dpif_completion *c, *next; | |
518 | ||
519 | LIST_FOR_EACH_SAFE (c, next, list_node, &ofproto->completions) { | |
520 | ofoperation_complete(c->op, 0); | |
521 | list_remove(&c->list_node); | |
522 | free(c); | |
523 | } | |
524 | } | |
525 | ||
abe529af BP |
526 | static void |
527 | destruct(struct ofproto *ofproto_) | |
528 | { | |
529 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
7ee20df1 | 530 | struct rule_dpif *rule, *next_rule; |
0697b5c3 | 531 | struct classifier *table; |
abe529af BP |
532 | int i; |
533 | ||
7ee20df1 BP |
534 | complete_operations(ofproto); |
535 | ||
0697b5c3 BP |
536 | OFPROTO_FOR_EACH_TABLE (table, &ofproto->up) { |
537 | struct cls_cursor cursor; | |
538 | ||
539 | cls_cursor_init(&cursor, table, NULL); | |
540 | CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, up.cr, &cursor) { | |
541 | ofproto_rule_destroy(&rule->up); | |
542 | } | |
7ee20df1 BP |
543 | } |
544 | ||
abe529af BP |
545 | for (i = 0; i < MAX_MIRRORS; i++) { |
546 | mirror_destroy(ofproto->mirrors[i]); | |
547 | } | |
548 | ||
549 | netflow_destroy(ofproto->netflow); | |
bae473fe | 550 | dpif_sflow_destroy(ofproto->sflow); |
abe529af BP |
551 | hmap_destroy(&ofproto->bundles); |
552 | mac_learning_destroy(ofproto->ml); | |
553 | ||
554 | hmap_destroy(&ofproto->facets); | |
555 | ||
556 | dpif_close(ofproto->dpif); | |
557 | } | |
558 | ||
559 | static int | |
560 | run(struct ofproto *ofproto_) | |
561 | { | |
562 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
563 | struct ofport_dpif *ofport; | |
564 | struct ofbundle *bundle; | |
565 | int i; | |
566 | ||
7ee20df1 BP |
567 | if (!clogged) { |
568 | complete_operations(ofproto); | |
569 | } | |
abe529af BP |
570 | dpif_run(ofproto->dpif); |
571 | ||
572 | for (i = 0; i < 50; i++) { | |
573 | struct dpif_upcall packet; | |
574 | int error; | |
575 | ||
576 | error = dpif_recv(ofproto->dpif, &packet); | |
577 | if (error) { | |
578 | if (error == ENODEV) { | |
579 | /* Datapath destroyed. */ | |
580 | return error; | |
581 | } | |
582 | break; | |
583 | } | |
584 | ||
585 | handle_upcall(ofproto, &packet); | |
586 | } | |
587 | ||
588 | if (timer_expired(&ofproto->next_expiration)) { | |
589 | int delay = expire(ofproto); | |
590 | timer_set_duration(&ofproto->next_expiration, delay); | |
591 | } | |
592 | ||
593 | if (ofproto->netflow) { | |
594 | netflow_run(ofproto->netflow); | |
595 | } | |
596 | if (ofproto->sflow) { | |
bae473fe | 597 | dpif_sflow_run(ofproto->sflow); |
abe529af BP |
598 | } |
599 | ||
600 | HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) { | |
601 | port_run(ofport); | |
602 | } | |
603 | HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) { | |
604 | bundle_run(bundle); | |
605 | } | |
606 | ||
1c313b88 BP |
607 | mac_learning_run(ofproto->ml, &ofproto->revalidate_set); |
608 | ||
abe529af BP |
609 | /* Now revalidate if there's anything to do. */ |
610 | if (ofproto->need_revalidate | |
611 | || !tag_set_is_empty(&ofproto->revalidate_set)) { | |
612 | struct tag_set revalidate_set = ofproto->revalidate_set; | |
613 | bool revalidate_all = ofproto->need_revalidate; | |
614 | struct facet *facet, *next; | |
615 | ||
616 | /* Clear the revalidation flags. */ | |
617 | tag_set_init(&ofproto->revalidate_set); | |
618 | ofproto->need_revalidate = false; | |
619 | ||
620 | HMAP_FOR_EACH_SAFE (facet, next, hmap_node, &ofproto->facets) { | |
621 | if (revalidate_all | |
622 | || tag_set_intersects(&revalidate_set, facet->tags)) { | |
623 | facet_revalidate(ofproto, facet); | |
624 | } | |
625 | } | |
626 | } | |
627 | ||
628 | return 0; | |
629 | } | |
630 | ||
631 | static void | |
632 | wait(struct ofproto *ofproto_) | |
633 | { | |
634 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
635 | struct ofport_dpif *ofport; | |
636 | struct ofbundle *bundle; | |
637 | ||
7ee20df1 BP |
638 | if (!clogged && !list_is_empty(&ofproto->completions)) { |
639 | poll_immediate_wake(); | |
640 | } | |
641 | ||
abe529af BP |
642 | dpif_wait(ofproto->dpif); |
643 | dpif_recv_wait(ofproto->dpif); | |
644 | if (ofproto->sflow) { | |
bae473fe | 645 | dpif_sflow_wait(ofproto->sflow); |
abe529af BP |
646 | } |
647 | if (!tag_set_is_empty(&ofproto->revalidate_set)) { | |
648 | poll_immediate_wake(); | |
649 | } | |
650 | HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) { | |
651 | port_wait(ofport); | |
652 | } | |
653 | HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) { | |
654 | bundle_wait(bundle); | |
655 | } | |
1c313b88 | 656 | mac_learning_wait(ofproto->ml); |
abe529af BP |
657 | if (ofproto->need_revalidate) { |
658 | /* Shouldn't happen, but if it does just go around again. */ | |
659 | VLOG_DBG_RL(&rl, "need revalidate in ofproto_wait_cb()"); | |
660 | poll_immediate_wake(); | |
661 | } else { | |
662 | timer_wait(&ofproto->next_expiration); | |
663 | } | |
664 | } | |
665 | ||
666 | static void | |
667 | flush(struct ofproto *ofproto_) | |
668 | { | |
669 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
670 | struct facet *facet, *next_facet; | |
671 | ||
672 | HMAP_FOR_EACH_SAFE (facet, next_facet, hmap_node, &ofproto->facets) { | |
673 | /* Mark the facet as not installed so that facet_remove() doesn't | |
674 | * bother trying to uninstall it. There is no point in uninstalling it | |
675 | * individually since we are about to blow away all the facets with | |
676 | * dpif_flow_flush(). */ | |
677 | facet->installed = false; | |
678 | facet->dp_packet_count = 0; | |
679 | facet->dp_byte_count = 0; | |
680 | facet_remove(ofproto, facet); | |
681 | } | |
682 | dpif_flow_flush(ofproto->dpif); | |
683 | } | |
684 | ||
6c1491fb BP |
685 | static void |
686 | get_features(struct ofproto *ofproto_ OVS_UNUSED, | |
687 | bool *arp_match_ip, uint32_t *actions) | |
688 | { | |
689 | *arp_match_ip = true; | |
690 | *actions = ((1u << OFPAT_OUTPUT) | | |
691 | (1u << OFPAT_SET_VLAN_VID) | | |
692 | (1u << OFPAT_SET_VLAN_PCP) | | |
693 | (1u << OFPAT_STRIP_VLAN) | | |
694 | (1u << OFPAT_SET_DL_SRC) | | |
695 | (1u << OFPAT_SET_DL_DST) | | |
696 | (1u << OFPAT_SET_NW_SRC) | | |
697 | (1u << OFPAT_SET_NW_DST) | | |
698 | (1u << OFPAT_SET_NW_TOS) | | |
699 | (1u << OFPAT_SET_TP_SRC) | | |
700 | (1u << OFPAT_SET_TP_DST) | | |
701 | (1u << OFPAT_ENQUEUE)); | |
702 | } | |
703 | ||
704 | static void | |
705 | get_tables(struct ofproto *ofproto_, struct ofp_table_stats *ots) | |
706 | { | |
707 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
df2c07f4 | 708 | struct ovs_dp_stats s; |
6c1491fb BP |
709 | |
710 | strcpy(ots->name, "classifier"); | |
711 | ||
712 | dpif_get_dp_stats(ofproto->dpif, &s); | |
713 | put_32aligned_be64(&ots->lookup_count, htonll(s.n_hit + s.n_missed)); | |
714 | put_32aligned_be64(&ots->matched_count, | |
715 | htonll(s.n_hit + ofproto->n_matches)); | |
716 | } | |
717 | ||
abe529af BP |
718 | static int |
719 | set_netflow(struct ofproto *ofproto_, | |
720 | const struct netflow_options *netflow_options) | |
721 | { | |
722 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
723 | ||
724 | if (netflow_options) { | |
725 | if (!ofproto->netflow) { | |
726 | ofproto->netflow = netflow_create(); | |
727 | } | |
728 | return netflow_set_options(ofproto->netflow, netflow_options); | |
729 | } else { | |
730 | netflow_destroy(ofproto->netflow); | |
731 | ofproto->netflow = NULL; | |
732 | return 0; | |
733 | } | |
734 | } | |
735 | ||
736 | static struct ofport * | |
737 | port_alloc(void) | |
738 | { | |
739 | struct ofport_dpif *port = xmalloc(sizeof *port); | |
740 | return &port->up; | |
741 | } | |
742 | ||
743 | static void | |
744 | port_dealloc(struct ofport *port_) | |
745 | { | |
746 | struct ofport_dpif *port = ofport_dpif_cast(port_); | |
747 | free(port); | |
748 | } | |
749 | ||
750 | static int | |
751 | port_construct(struct ofport *port_) | |
752 | { | |
753 | struct ofport_dpif *port = ofport_dpif_cast(port_); | |
754 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto); | |
755 | ||
756 | port->odp_port = ofp_port_to_odp_port(port->up.ofp_port); | |
757 | port->bundle = NULL; | |
758 | port->cfm = NULL; | |
759 | port->tag = tag_create_random(); | |
d5ffa7f2 | 760 | port->may_enable = true; |
abe529af BP |
761 | |
762 | if (ofproto->sflow) { | |
bae473fe JP |
763 | dpif_sflow_add_port(ofproto->sflow, port->odp_port, |
764 | netdev_get_name(port->up.netdev)); | |
abe529af BP |
765 | } |
766 | ||
767 | return 0; | |
768 | } | |
769 | ||
770 | static void | |
771 | port_destruct(struct ofport *port_) | |
772 | { | |
773 | struct ofport_dpif *port = ofport_dpif_cast(port_); | |
774 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto); | |
775 | ||
776 | bundle_remove(port_); | |
a5610457 | 777 | set_cfm(port_, NULL); |
abe529af | 778 | if (ofproto->sflow) { |
bae473fe | 779 | dpif_sflow_del_port(ofproto->sflow, port->odp_port); |
abe529af BP |
780 | } |
781 | } | |
782 | ||
783 | static void | |
784 | port_modified(struct ofport *port_) | |
785 | { | |
786 | struct ofport_dpif *port = ofport_dpif_cast(port_); | |
787 | ||
788 | if (port->bundle && port->bundle->bond) { | |
789 | bond_slave_set_netdev(port->bundle->bond, port, port->up.netdev); | |
790 | } | |
791 | } | |
792 | ||
793 | static void | |
794 | port_reconfigured(struct ofport *port_, ovs_be32 old_config) | |
795 | { | |
796 | struct ofport_dpif *port = ofport_dpif_cast(port_); | |
797 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto); | |
798 | ovs_be32 changed = old_config ^ port->up.opp.config; | |
799 | ||
800 | if (changed & htonl(OFPPC_NO_RECV | OFPPC_NO_RECV_STP | | |
801 | OFPPC_NO_FWD | OFPPC_NO_FLOOD)) { | |
802 | ofproto->need_revalidate = true; | |
803 | } | |
804 | } | |
805 | ||
806 | static int | |
807 | set_sflow(struct ofproto *ofproto_, | |
808 | const struct ofproto_sflow_options *sflow_options) | |
809 | { | |
810 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
bae473fe | 811 | struct dpif_sflow *ds = ofproto->sflow; |
abe529af | 812 | if (sflow_options) { |
bae473fe | 813 | if (!ds) { |
abe529af BP |
814 | struct ofport_dpif *ofport; |
815 | ||
bae473fe | 816 | ds = ofproto->sflow = dpif_sflow_create(ofproto->dpif); |
abe529af | 817 | HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) { |
bae473fe JP |
818 | dpif_sflow_add_port(ds, ofport->odp_port, |
819 | netdev_get_name(ofport->up.netdev)); | |
abe529af BP |
820 | } |
821 | } | |
bae473fe | 822 | dpif_sflow_set_options(ds, sflow_options); |
abe529af | 823 | } else { |
bae473fe | 824 | dpif_sflow_destroy(ds); |
abe529af BP |
825 | ofproto->sflow = NULL; |
826 | } | |
827 | return 0; | |
828 | } | |
829 | ||
830 | static int | |
a5610457 | 831 | set_cfm(struct ofport *ofport_, const struct cfm_settings *s) |
abe529af BP |
832 | { |
833 | struct ofport_dpif *ofport = ofport_dpif_cast(ofport_); | |
834 | int error; | |
835 | ||
a5610457 | 836 | if (!s) { |
abe529af BP |
837 | error = 0; |
838 | } else { | |
839 | if (!ofport->cfm) { | |
8c977421 EJ |
840 | struct ofproto_dpif *ofproto; |
841 | ||
842 | ofproto = ofproto_dpif_cast(ofport->up.ofproto); | |
843 | ofproto->need_revalidate = true; | |
6f629657 | 844 | ofport->cfm = cfm_create(netdev_get_name(ofport->up.netdev)); |
abe529af BP |
845 | } |
846 | ||
a5610457 | 847 | if (cfm_configure(ofport->cfm, s)) { |
abe529af BP |
848 | return 0; |
849 | } | |
850 | ||
851 | error = EINVAL; | |
852 | } | |
853 | cfm_destroy(ofport->cfm); | |
854 | ofport->cfm = NULL; | |
855 | return error; | |
856 | } | |
857 | ||
858 | static int | |
a5610457 | 859 | get_cfm_fault(const struct ofport *ofport_) |
abe529af BP |
860 | { |
861 | struct ofport_dpif *ofport = ofport_dpif_cast(ofport_); | |
a5610457 EJ |
862 | |
863 | return ofport->cfm ? cfm_get_fault(ofport->cfm) : -1; | |
abe529af | 864 | } |
1de11730 EJ |
865 | |
866 | static int | |
867 | get_cfm_remote_mpids(const struct ofport *ofport_, const uint64_t **rmps, | |
868 | size_t *n_rmps) | |
869 | { | |
870 | struct ofport_dpif *ofport = ofport_dpif_cast(ofport_); | |
871 | ||
872 | if (ofport->cfm) { | |
873 | cfm_get_remote_mpids(ofport->cfm, rmps, n_rmps); | |
874 | return 0; | |
875 | } else { | |
876 | return -1; | |
877 | } | |
878 | } | |
abe529af BP |
879 | \f |
880 | /* Bundles. */ | |
881 | ||
882 | /* Expires all MAC learning entries associated with 'port' and forces ofproto | |
883 | * to revalidate every flow. */ | |
884 | static void | |
885 | bundle_flush_macs(struct ofbundle *bundle) | |
886 | { | |
887 | struct ofproto_dpif *ofproto = bundle->ofproto; | |
888 | struct mac_learning *ml = ofproto->ml; | |
889 | struct mac_entry *mac, *next_mac; | |
890 | ||
891 | ofproto->need_revalidate = true; | |
892 | LIST_FOR_EACH_SAFE (mac, next_mac, lru_node, &ml->lrus) { | |
893 | if (mac->port.p == bundle) { | |
894 | mac_learning_expire(ml, mac); | |
895 | } | |
896 | } | |
897 | } | |
898 | ||
899 | static struct ofbundle * | |
900 | bundle_lookup(const struct ofproto_dpif *ofproto, void *aux) | |
901 | { | |
902 | struct ofbundle *bundle; | |
903 | ||
904 | HMAP_FOR_EACH_IN_BUCKET (bundle, hmap_node, hash_pointer(aux, 0), | |
905 | &ofproto->bundles) { | |
906 | if (bundle->aux == aux) { | |
907 | return bundle; | |
908 | } | |
909 | } | |
910 | return NULL; | |
911 | } | |
912 | ||
913 | /* Looks up each of the 'n_auxes' pointers in 'auxes' as bundles and adds the | |
914 | * ones that are found to 'bundles'. */ | |
915 | static void | |
916 | bundle_lookup_multiple(struct ofproto_dpif *ofproto, | |
917 | void **auxes, size_t n_auxes, | |
918 | struct hmapx *bundles) | |
919 | { | |
920 | size_t i; | |
921 | ||
922 | hmapx_init(bundles); | |
923 | for (i = 0; i < n_auxes; i++) { | |
924 | struct ofbundle *bundle = bundle_lookup(ofproto, auxes[i]); | |
925 | if (bundle) { | |
926 | hmapx_add(bundles, bundle); | |
927 | } | |
928 | } | |
929 | } | |
930 | ||
931 | static void | |
932 | bundle_del_port(struct ofport_dpif *port) | |
933 | { | |
934 | struct ofbundle *bundle = port->bundle; | |
935 | ||
6f77f4ae BP |
936 | bundle->ofproto->need_revalidate = true; |
937 | ||
abe529af BP |
938 | list_remove(&port->bundle_node); |
939 | port->bundle = NULL; | |
940 | ||
941 | if (bundle->lacp) { | |
942 | lacp_slave_unregister(bundle->lacp, port); | |
943 | } | |
944 | if (bundle->bond) { | |
945 | bond_slave_unregister(bundle->bond, port); | |
946 | } | |
947 | ||
948 | bundle->floodable = true; | |
949 | LIST_FOR_EACH (port, bundle_node, &bundle->ports) { | |
950 | if (port->up.opp.config & htonl(OFPPC_NO_FLOOD)) { | |
951 | bundle->floodable = false; | |
952 | } | |
953 | } | |
954 | } | |
955 | ||
956 | static bool | |
957 | bundle_add_port(struct ofbundle *bundle, uint32_t ofp_port, | |
00794817 BP |
958 | struct lacp_slave_settings *lacp, |
959 | uint32_t bond_stable_id) | |
abe529af BP |
960 | { |
961 | struct ofport_dpif *port; | |
962 | ||
963 | port = get_ofp_port(bundle->ofproto, ofp_port); | |
964 | if (!port) { | |
965 | return false; | |
966 | } | |
967 | ||
968 | if (port->bundle != bundle) { | |
6f77f4ae | 969 | bundle->ofproto->need_revalidate = true; |
abe529af BP |
970 | if (port->bundle) { |
971 | bundle_del_port(port); | |
972 | } | |
973 | ||
974 | port->bundle = bundle; | |
975 | list_push_back(&bundle->ports, &port->bundle_node); | |
976 | if (port->up.opp.config & htonl(OFPPC_NO_FLOOD)) { | |
977 | bundle->floodable = false; | |
978 | } | |
979 | } | |
980 | if (lacp) { | |
981 | lacp_slave_register(bundle->lacp, port, lacp); | |
982 | } | |
983 | ||
00794817 BP |
984 | port->bond_stable_id = bond_stable_id; |
985 | ||
abe529af BP |
986 | return true; |
987 | } | |
988 | ||
989 | static void | |
990 | bundle_destroy(struct ofbundle *bundle) | |
991 | { | |
992 | struct ofproto_dpif *ofproto; | |
993 | struct ofport_dpif *port, *next_port; | |
994 | int i; | |
995 | ||
996 | if (!bundle) { | |
997 | return; | |
998 | } | |
999 | ||
1000 | ofproto = bundle->ofproto; | |
1001 | for (i = 0; i < MAX_MIRRORS; i++) { | |
1002 | struct ofmirror *m = ofproto->mirrors[i]; | |
1003 | if (m) { | |
1004 | if (m->out == bundle) { | |
1005 | mirror_destroy(m); | |
1006 | } else if (hmapx_find_and_delete(&m->srcs, bundle) | |
1007 | || hmapx_find_and_delete(&m->dsts, bundle)) { | |
1008 | ofproto->need_revalidate = true; | |
1009 | } | |
1010 | } | |
1011 | } | |
1012 | ||
1013 | LIST_FOR_EACH_SAFE (port, next_port, bundle_node, &bundle->ports) { | |
1014 | bundle_del_port(port); | |
1015 | } | |
1016 | ||
1017 | bundle_flush_macs(bundle); | |
1018 | hmap_remove(&ofproto->bundles, &bundle->hmap_node); | |
1019 | free(bundle->name); | |
1020 | free(bundle->trunks); | |
1021 | lacp_destroy(bundle->lacp); | |
1022 | bond_destroy(bundle->bond); | |
1023 | free(bundle); | |
1024 | } | |
1025 | ||
1026 | static int | |
1027 | bundle_set(struct ofproto *ofproto_, void *aux, | |
1028 | const struct ofproto_bundle_settings *s) | |
1029 | { | |
1030 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
1031 | bool need_flush = false; | |
1032 | const unsigned long *trunks; | |
1033 | struct ofport_dpif *port; | |
1034 | struct ofbundle *bundle; | |
1035 | size_t i; | |
1036 | bool ok; | |
1037 | ||
1038 | if (!s) { | |
1039 | bundle_destroy(bundle_lookup(ofproto, aux)); | |
1040 | return 0; | |
1041 | } | |
1042 | ||
1043 | assert(s->n_slaves == 1 || s->bond != NULL); | |
1044 | assert((s->lacp != NULL) == (s->lacp_slaves != NULL)); | |
1045 | ||
1046 | bundle = bundle_lookup(ofproto, aux); | |
1047 | if (!bundle) { | |
1048 | bundle = xmalloc(sizeof *bundle); | |
1049 | ||
1050 | bundle->ofproto = ofproto; | |
1051 | hmap_insert(&ofproto->bundles, &bundle->hmap_node, | |
1052 | hash_pointer(aux, 0)); | |
1053 | bundle->aux = aux; | |
1054 | bundle->name = NULL; | |
1055 | ||
1056 | list_init(&bundle->ports); | |
1057 | bundle->vlan = -1; | |
1058 | bundle->trunks = NULL; | |
1059 | bundle->lacp = NULL; | |
1060 | bundle->bond = NULL; | |
1061 | ||
1062 | bundle->floodable = true; | |
1063 | ||
1064 | bundle->src_mirrors = 0; | |
1065 | bundle->dst_mirrors = 0; | |
1066 | bundle->mirror_out = 0; | |
1067 | } | |
1068 | ||
1069 | if (!bundle->name || strcmp(s->name, bundle->name)) { | |
1070 | free(bundle->name); | |
1071 | bundle->name = xstrdup(s->name); | |
1072 | } | |
1073 | ||
1074 | /* LACP. */ | |
1075 | if (s->lacp) { | |
1076 | if (!bundle->lacp) { | |
8c977421 | 1077 | ofproto->need_revalidate = true; |
abe529af BP |
1078 | bundle->lacp = lacp_create(); |
1079 | } | |
1080 | lacp_configure(bundle->lacp, s->lacp); | |
1081 | } else { | |
1082 | lacp_destroy(bundle->lacp); | |
1083 | bundle->lacp = NULL; | |
1084 | } | |
1085 | ||
1086 | /* Update set of ports. */ | |
1087 | ok = true; | |
1088 | for (i = 0; i < s->n_slaves; i++) { | |
1089 | if (!bundle_add_port(bundle, s->slaves[i], | |
00794817 BP |
1090 | s->lacp ? &s->lacp_slaves[i] : NULL, |
1091 | s->bond_stable_ids ? s->bond_stable_ids[i] : 0)) { | |
abe529af BP |
1092 | ok = false; |
1093 | } | |
1094 | } | |
1095 | if (!ok || list_size(&bundle->ports) != s->n_slaves) { | |
1096 | struct ofport_dpif *next_port; | |
1097 | ||
1098 | LIST_FOR_EACH_SAFE (port, next_port, bundle_node, &bundle->ports) { | |
1099 | for (i = 0; i < s->n_slaves; i++) { | |
56c769ab | 1100 | if (s->slaves[i] == port->up.ofp_port) { |
abe529af BP |
1101 | goto found; |
1102 | } | |
1103 | } | |
1104 | ||
1105 | bundle_del_port(port); | |
1106 | found: ; | |
1107 | } | |
1108 | } | |
1109 | assert(list_size(&bundle->ports) <= s->n_slaves); | |
1110 | ||
1111 | if (list_is_empty(&bundle->ports)) { | |
1112 | bundle_destroy(bundle); | |
1113 | return EINVAL; | |
1114 | } | |
1115 | ||
1116 | /* Set VLAN tag. */ | |
1117 | if (s->vlan != bundle->vlan) { | |
1118 | bundle->vlan = s->vlan; | |
1119 | need_flush = true; | |
1120 | } | |
1121 | ||
1122 | /* Get trunked VLANs. */ | |
c3b07057 | 1123 | trunks = s->vlan == -1 ? s->trunks : NULL; |
abe529af BP |
1124 | if (!vlan_bitmap_equal(trunks, bundle->trunks)) { |
1125 | free(bundle->trunks); | |
1126 | bundle->trunks = vlan_bitmap_clone(trunks); | |
1127 | need_flush = true; | |
1128 | } | |
1129 | ||
1130 | /* Bonding. */ | |
1131 | if (!list_is_short(&bundle->ports)) { | |
1132 | bundle->ofproto->has_bonded_bundles = true; | |
1133 | if (bundle->bond) { | |
1134 | if (bond_reconfigure(bundle->bond, s->bond)) { | |
1135 | ofproto->need_revalidate = true; | |
1136 | } | |
1137 | } else { | |
1138 | bundle->bond = bond_create(s->bond); | |
6f77f4ae | 1139 | ofproto->need_revalidate = true; |
abe529af BP |
1140 | } |
1141 | ||
1142 | LIST_FOR_EACH (port, bundle_node, &bundle->ports) { | |
00794817 | 1143 | bond_slave_register(bundle->bond, port, port->bond_stable_id, |
abe529af BP |
1144 | port->up.netdev); |
1145 | } | |
1146 | } else { | |
1147 | bond_destroy(bundle->bond); | |
1148 | bundle->bond = NULL; | |
1149 | } | |
1150 | ||
1151 | /* If we changed something that would affect MAC learning, un-learn | |
1152 | * everything on this port and force flow revalidation. */ | |
1153 | if (need_flush) { | |
1154 | bundle_flush_macs(bundle); | |
1155 | } | |
1156 | ||
1157 | return 0; | |
1158 | } | |
1159 | ||
1160 | static void | |
1161 | bundle_remove(struct ofport *port_) | |
1162 | { | |
1163 | struct ofport_dpif *port = ofport_dpif_cast(port_); | |
1164 | struct ofbundle *bundle = port->bundle; | |
1165 | ||
1166 | if (bundle) { | |
1167 | bundle_del_port(port); | |
1168 | if (list_is_empty(&bundle->ports)) { | |
1169 | bundle_destroy(bundle); | |
1170 | } else if (list_is_short(&bundle->ports)) { | |
1171 | bond_destroy(bundle->bond); | |
1172 | bundle->bond = NULL; | |
1173 | } | |
1174 | } | |
1175 | } | |
1176 | ||
1177 | static void | |
5f877369 | 1178 | send_pdu_cb(void *port_, const void *pdu, size_t pdu_size) |
abe529af BP |
1179 | { |
1180 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 10); | |
1181 | struct ofport_dpif *port = port_; | |
1182 | uint8_t ea[ETH_ADDR_LEN]; | |
1183 | int error; | |
1184 | ||
1185 | error = netdev_get_etheraddr(port->up.netdev, ea); | |
1186 | if (!error) { | |
abe529af | 1187 | struct ofpbuf packet; |
5f877369 | 1188 | void *packet_pdu; |
abe529af BP |
1189 | |
1190 | ofpbuf_init(&packet, 0); | |
1191 | packet_pdu = eth_compose(&packet, eth_addr_lacp, ea, ETH_TYPE_LACP, | |
5f877369 EJ |
1192 | pdu_size); |
1193 | memcpy(packet_pdu, pdu, pdu_size); | |
1194 | ||
abe529af BP |
1195 | error = netdev_send(port->up.netdev, &packet); |
1196 | if (error) { | |
1197 | VLOG_WARN_RL(&rl, "port %s: sending LACP PDU on iface %s failed " | |
1198 | "(%s)", port->bundle->name, | |
1199 | netdev_get_name(port->up.netdev), strerror(error)); | |
1200 | } | |
1201 | ofpbuf_uninit(&packet); | |
1202 | } else { | |
1203 | VLOG_ERR_RL(&rl, "port %s: cannot obtain Ethernet address of iface " | |
1204 | "%s (%s)", port->bundle->name, | |
1205 | netdev_get_name(port->up.netdev), strerror(error)); | |
1206 | } | |
1207 | } | |
1208 | ||
1209 | static void | |
1210 | bundle_send_learning_packets(struct ofbundle *bundle) | |
1211 | { | |
1212 | struct ofproto_dpif *ofproto = bundle->ofproto; | |
1213 | int error, n_packets, n_errors; | |
1214 | struct mac_entry *e; | |
1215 | ||
1216 | error = n_packets = n_errors = 0; | |
1217 | LIST_FOR_EACH (e, lru_node, &ofproto->ml->lrus) { | |
1218 | if (e->port.p != bundle) { | |
1219 | int ret = bond_send_learning_packet(bundle->bond, e->mac, e->vlan); | |
1220 | if (ret) { | |
1221 | error = ret; | |
1222 | n_errors++; | |
1223 | } | |
1224 | n_packets++; | |
1225 | } | |
1226 | } | |
1227 | ||
1228 | if (n_errors) { | |
1229 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
1230 | VLOG_WARN_RL(&rl, "bond %s: %d errors sending %d gratuitous learning " | |
1231 | "packets, last error was: %s", | |
1232 | bundle->name, n_errors, n_packets, strerror(error)); | |
1233 | } else { | |
1234 | VLOG_DBG("bond %s: sent %d gratuitous learning packets", | |
1235 | bundle->name, n_packets); | |
1236 | } | |
1237 | } | |
1238 | ||
1239 | static void | |
1240 | bundle_run(struct ofbundle *bundle) | |
1241 | { | |
1242 | if (bundle->lacp) { | |
1243 | lacp_run(bundle->lacp, send_pdu_cb); | |
1244 | } | |
1245 | if (bundle->bond) { | |
1246 | struct ofport_dpif *port; | |
1247 | ||
1248 | LIST_FOR_EACH (port, bundle_node, &bundle->ports) { | |
015e08bc | 1249 | bond_slave_set_may_enable(bundle->bond, port, port->may_enable); |
abe529af BP |
1250 | } |
1251 | ||
1252 | bond_run(bundle->bond, &bundle->ofproto->revalidate_set, | |
1253 | lacp_negotiated(bundle->lacp)); | |
1254 | if (bond_should_send_learning_packets(bundle->bond)) { | |
1255 | bundle_send_learning_packets(bundle); | |
1256 | } | |
1257 | } | |
1258 | } | |
1259 | ||
1260 | static void | |
1261 | bundle_wait(struct ofbundle *bundle) | |
1262 | { | |
1263 | if (bundle->lacp) { | |
1264 | lacp_wait(bundle->lacp); | |
1265 | } | |
1266 | if (bundle->bond) { | |
1267 | bond_wait(bundle->bond); | |
1268 | } | |
1269 | } | |
1270 | \f | |
1271 | /* Mirrors. */ | |
1272 | ||
1273 | static int | |
1274 | mirror_scan(struct ofproto_dpif *ofproto) | |
1275 | { | |
1276 | int idx; | |
1277 | ||
1278 | for (idx = 0; idx < MAX_MIRRORS; idx++) { | |
1279 | if (!ofproto->mirrors[idx]) { | |
1280 | return idx; | |
1281 | } | |
1282 | } | |
1283 | return -1; | |
1284 | } | |
1285 | ||
1286 | static struct ofmirror * | |
1287 | mirror_lookup(struct ofproto_dpif *ofproto, void *aux) | |
1288 | { | |
1289 | int i; | |
1290 | ||
1291 | for (i = 0; i < MAX_MIRRORS; i++) { | |
1292 | struct ofmirror *mirror = ofproto->mirrors[i]; | |
1293 | if (mirror && mirror->aux == aux) { | |
1294 | return mirror; | |
1295 | } | |
1296 | } | |
1297 | ||
1298 | return NULL; | |
1299 | } | |
1300 | ||
1301 | static int | |
1302 | mirror_set(struct ofproto *ofproto_, void *aux, | |
1303 | const struct ofproto_mirror_settings *s) | |
1304 | { | |
1305 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
1306 | mirror_mask_t mirror_bit; | |
1307 | struct ofbundle *bundle; | |
1308 | struct ofmirror *mirror; | |
1309 | struct ofbundle *out; | |
1310 | struct hmapx srcs; /* Contains "struct ofbundle *"s. */ | |
1311 | struct hmapx dsts; /* Contains "struct ofbundle *"s. */ | |
1312 | int out_vlan; | |
1313 | ||
1314 | mirror = mirror_lookup(ofproto, aux); | |
1315 | if (!s) { | |
1316 | mirror_destroy(mirror); | |
1317 | return 0; | |
1318 | } | |
1319 | if (!mirror) { | |
1320 | int idx; | |
1321 | ||
1322 | idx = mirror_scan(ofproto); | |
1323 | if (idx < 0) { | |
1324 | VLOG_WARN("bridge %s: maximum of %d port mirrors reached, " | |
1325 | "cannot create %s", | |
1326 | ofproto->up.name, MAX_MIRRORS, s->name); | |
1327 | return EFBIG; | |
1328 | } | |
1329 | ||
1330 | mirror = ofproto->mirrors[idx] = xzalloc(sizeof *mirror); | |
1331 | mirror->ofproto = ofproto; | |
1332 | mirror->idx = idx; | |
8b28d864 | 1333 | mirror->aux = aux; |
abe529af BP |
1334 | mirror->out_vlan = -1; |
1335 | mirror->name = NULL; | |
1336 | } | |
1337 | ||
1338 | if (!mirror->name || strcmp(s->name, mirror->name)) { | |
1339 | free(mirror->name); | |
1340 | mirror->name = xstrdup(s->name); | |
1341 | } | |
1342 | ||
1343 | /* Get the new configuration. */ | |
1344 | if (s->out_bundle) { | |
1345 | out = bundle_lookup(ofproto, s->out_bundle); | |
1346 | if (!out) { | |
1347 | mirror_destroy(mirror); | |
1348 | return EINVAL; | |
1349 | } | |
1350 | out_vlan = -1; | |
1351 | } else { | |
1352 | out = NULL; | |
1353 | out_vlan = s->out_vlan; | |
1354 | } | |
1355 | bundle_lookup_multiple(ofproto, s->srcs, s->n_srcs, &srcs); | |
1356 | bundle_lookup_multiple(ofproto, s->dsts, s->n_dsts, &dsts); | |
1357 | ||
1358 | /* If the configuration has not changed, do nothing. */ | |
1359 | if (hmapx_equals(&srcs, &mirror->srcs) | |
1360 | && hmapx_equals(&dsts, &mirror->dsts) | |
1361 | && vlan_bitmap_equal(mirror->vlans, s->src_vlans) | |
1362 | && mirror->out == out | |
1363 | && mirror->out_vlan == out_vlan) | |
1364 | { | |
1365 | hmapx_destroy(&srcs); | |
1366 | hmapx_destroy(&dsts); | |
1367 | return 0; | |
1368 | } | |
1369 | ||
1370 | hmapx_swap(&srcs, &mirror->srcs); | |
1371 | hmapx_destroy(&srcs); | |
1372 | ||
1373 | hmapx_swap(&dsts, &mirror->dsts); | |
1374 | hmapx_destroy(&dsts); | |
1375 | ||
1376 | free(mirror->vlans); | |
1377 | mirror->vlans = vlan_bitmap_clone(s->src_vlans); | |
1378 | ||
1379 | mirror->out = out; | |
1380 | mirror->out_vlan = out_vlan; | |
1381 | ||
1382 | /* Update bundles. */ | |
1383 | mirror_bit = MIRROR_MASK_C(1) << mirror->idx; | |
1384 | HMAP_FOR_EACH (bundle, hmap_node, &mirror->ofproto->bundles) { | |
1385 | if (hmapx_contains(&mirror->srcs, bundle)) { | |
1386 | bundle->src_mirrors |= mirror_bit; | |
1387 | } else { | |
1388 | bundle->src_mirrors &= ~mirror_bit; | |
1389 | } | |
1390 | ||
1391 | if (hmapx_contains(&mirror->dsts, bundle)) { | |
1392 | bundle->dst_mirrors |= mirror_bit; | |
1393 | } else { | |
1394 | bundle->dst_mirrors &= ~mirror_bit; | |
1395 | } | |
1396 | ||
1397 | if (mirror->out == bundle) { | |
1398 | bundle->mirror_out |= mirror_bit; | |
1399 | } else { | |
1400 | bundle->mirror_out &= ~mirror_bit; | |
1401 | } | |
1402 | } | |
1403 | ||
1404 | ofproto->need_revalidate = true; | |
1405 | mac_learning_flush(ofproto->ml); | |
1406 | ||
1407 | return 0; | |
1408 | } | |
1409 | ||
1410 | static void | |
1411 | mirror_destroy(struct ofmirror *mirror) | |
1412 | { | |
1413 | struct ofproto_dpif *ofproto; | |
1414 | mirror_mask_t mirror_bit; | |
1415 | struct ofbundle *bundle; | |
1416 | ||
1417 | if (!mirror) { | |
1418 | return; | |
1419 | } | |
1420 | ||
1421 | ofproto = mirror->ofproto; | |
1422 | ofproto->need_revalidate = true; | |
1423 | mac_learning_flush(ofproto->ml); | |
1424 | ||
1425 | mirror_bit = MIRROR_MASK_C(1) << mirror->idx; | |
1426 | HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) { | |
1427 | bundle->src_mirrors &= ~mirror_bit; | |
1428 | bundle->dst_mirrors &= ~mirror_bit; | |
1429 | bundle->mirror_out &= ~mirror_bit; | |
1430 | } | |
1431 | ||
1432 | hmapx_destroy(&mirror->srcs); | |
1433 | hmapx_destroy(&mirror->dsts); | |
1434 | free(mirror->vlans); | |
1435 | ||
1436 | ofproto->mirrors[mirror->idx] = NULL; | |
1437 | free(mirror->name); | |
1438 | free(mirror); | |
1439 | } | |
1440 | ||
1441 | static int | |
1442 | set_flood_vlans(struct ofproto *ofproto_, unsigned long *flood_vlans) | |
1443 | { | |
1444 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
1445 | if (mac_learning_set_flood_vlans(ofproto->ml, flood_vlans)) { | |
1446 | ofproto->need_revalidate = true; | |
1447 | mac_learning_flush(ofproto->ml); | |
1448 | } | |
1449 | return 0; | |
1450 | } | |
1451 | ||
1452 | static bool | |
1453 | is_mirror_output_bundle(struct ofproto *ofproto_, void *aux) | |
1454 | { | |
1455 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
1456 | struct ofbundle *bundle = bundle_lookup(ofproto, aux); | |
1457 | return bundle && bundle->mirror_out != 0; | |
1458 | } | |
8402c74b SS |
1459 | |
1460 | static void | |
b53055f4 | 1461 | forward_bpdu_changed(struct ofproto *ofproto_) |
8402c74b SS |
1462 | { |
1463 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
1464 | /* Revalidate cached flows whenever forward_bpdu option changes. */ | |
1465 | ofproto->need_revalidate = true; | |
1466 | } | |
abe529af BP |
1467 | \f |
1468 | /* Ports. */ | |
1469 | ||
1470 | static struct ofport_dpif * | |
1471 | get_ofp_port(struct ofproto_dpif *ofproto, uint16_t ofp_port) | |
1472 | { | |
7df6a8bd BP |
1473 | struct ofport *ofport = ofproto_get_port(&ofproto->up, ofp_port); |
1474 | return ofport ? ofport_dpif_cast(ofport) : NULL; | |
abe529af BP |
1475 | } |
1476 | ||
1477 | static struct ofport_dpif * | |
1478 | get_odp_port(struct ofproto_dpif *ofproto, uint32_t odp_port) | |
1479 | { | |
1480 | return get_ofp_port(ofproto, odp_port_to_ofp_port(odp_port)); | |
1481 | } | |
1482 | ||
1483 | static void | |
1484 | ofproto_port_from_dpif_port(struct ofproto_port *ofproto_port, | |
1485 | struct dpif_port *dpif_port) | |
1486 | { | |
1487 | ofproto_port->name = dpif_port->name; | |
1488 | ofproto_port->type = dpif_port->type; | |
1489 | ofproto_port->ofp_port = odp_port_to_ofp_port(dpif_port->port_no); | |
1490 | } | |
1491 | ||
1492 | static void | |
1493 | port_run(struct ofport_dpif *ofport) | |
1494 | { | |
015e08bc EJ |
1495 | bool enable = netdev_get_carrier(ofport->up.netdev); |
1496 | ||
abe529af BP |
1497 | if (ofport->cfm) { |
1498 | cfm_run(ofport->cfm); | |
1499 | ||
1500 | if (cfm_should_send_ccm(ofport->cfm)) { | |
1501 | struct ofpbuf packet; | |
abe529af BP |
1502 | |
1503 | ofpbuf_init(&packet, 0); | |
c0a2e71d | 1504 | cfm_compose_ccm(ofport->cfm, &packet, ofport->up.opp.hw_addr); |
abe529af | 1505 | send_packet(ofproto_dpif_cast(ofport->up.ofproto), |
b2fda3ef | 1506 | ofport->odp_port, &packet); |
abe529af BP |
1507 | ofpbuf_uninit(&packet); |
1508 | } | |
015e08bc EJ |
1509 | |
1510 | enable = enable && !cfm_get_fault(ofport->cfm); | |
abe529af | 1511 | } |
015e08bc EJ |
1512 | |
1513 | if (ofport->bundle) { | |
1514 | enable = enable && lacp_slave_may_enable(ofport->bundle->lacp, ofport); | |
1515 | } | |
1516 | ||
daff3353 EJ |
1517 | if (ofport->may_enable != enable) { |
1518 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto); | |
1519 | ||
1520 | if (ofproto->has_bundle_action) { | |
1521 | ofproto->need_revalidate = true; | |
1522 | } | |
1523 | } | |
1524 | ||
015e08bc | 1525 | ofport->may_enable = enable; |
abe529af BP |
1526 | } |
1527 | ||
1528 | static void | |
1529 | port_wait(struct ofport_dpif *ofport) | |
1530 | { | |
1531 | if (ofport->cfm) { | |
1532 | cfm_wait(ofport->cfm); | |
1533 | } | |
1534 | } | |
1535 | ||
1536 | static int | |
1537 | port_query_by_name(const struct ofproto *ofproto_, const char *devname, | |
1538 | struct ofproto_port *ofproto_port) | |
1539 | { | |
1540 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
1541 | struct dpif_port dpif_port; | |
1542 | int error; | |
1543 | ||
1544 | error = dpif_port_query_by_name(ofproto->dpif, devname, &dpif_port); | |
1545 | if (!error) { | |
1546 | ofproto_port_from_dpif_port(ofproto_port, &dpif_port); | |
1547 | } | |
1548 | return error; | |
1549 | } | |
1550 | ||
1551 | static int | |
1552 | port_add(struct ofproto *ofproto_, struct netdev *netdev, uint16_t *ofp_portp) | |
1553 | { | |
1554 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
1555 | uint16_t odp_port; | |
1556 | int error; | |
1557 | ||
1558 | error = dpif_port_add(ofproto->dpif, netdev, &odp_port); | |
1559 | if (!error) { | |
1560 | *ofp_portp = odp_port_to_ofp_port(odp_port); | |
1561 | } | |
1562 | return error; | |
1563 | } | |
1564 | ||
1565 | static int | |
1566 | port_del(struct ofproto *ofproto_, uint16_t ofp_port) | |
1567 | { | |
1568 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
1569 | int error; | |
1570 | ||
1571 | error = dpif_port_del(ofproto->dpif, ofp_port_to_odp_port(ofp_port)); | |
1572 | if (!error) { | |
1573 | struct ofport_dpif *ofport = get_ofp_port(ofproto, ofp_port); | |
1574 | if (ofport) { | |
1575 | /* The caller is going to close ofport->up.netdev. If this is a | |
1576 | * bonded port, then the bond is using that netdev, so remove it | |
1577 | * from the bond. The client will need to reconfigure everything | |
1578 | * after deleting ports, so then the slave will get re-added. */ | |
1579 | bundle_remove(&ofport->up); | |
1580 | } | |
1581 | } | |
1582 | return error; | |
1583 | } | |
1584 | ||
1585 | struct port_dump_state { | |
1586 | struct dpif_port_dump dump; | |
1587 | bool done; | |
1588 | }; | |
1589 | ||
1590 | static int | |
1591 | port_dump_start(const struct ofproto *ofproto_, void **statep) | |
1592 | { | |
1593 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
1594 | struct port_dump_state *state; | |
1595 | ||
1596 | *statep = state = xmalloc(sizeof *state); | |
1597 | dpif_port_dump_start(&state->dump, ofproto->dpif); | |
1598 | state->done = false; | |
1599 | return 0; | |
1600 | } | |
1601 | ||
1602 | static int | |
1603 | port_dump_next(const struct ofproto *ofproto_ OVS_UNUSED, void *state_, | |
1604 | struct ofproto_port *port) | |
1605 | { | |
1606 | struct port_dump_state *state = state_; | |
1607 | struct dpif_port dpif_port; | |
1608 | ||
1609 | if (dpif_port_dump_next(&state->dump, &dpif_port)) { | |
1610 | ofproto_port_from_dpif_port(port, &dpif_port); | |
1611 | return 0; | |
1612 | } else { | |
1613 | int error = dpif_port_dump_done(&state->dump); | |
1614 | state->done = true; | |
1615 | return error ? error : EOF; | |
1616 | } | |
1617 | } | |
1618 | ||
1619 | static int | |
1620 | port_dump_done(const struct ofproto *ofproto_ OVS_UNUSED, void *state_) | |
1621 | { | |
1622 | struct port_dump_state *state = state_; | |
1623 | ||
1624 | if (!state->done) { | |
1625 | dpif_port_dump_done(&state->dump); | |
1626 | } | |
1627 | free(state); | |
1628 | return 0; | |
1629 | } | |
1630 | ||
1631 | static int | |
1632 | port_poll(const struct ofproto *ofproto_, char **devnamep) | |
1633 | { | |
1634 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
1635 | return dpif_port_poll(ofproto->dpif, devnamep); | |
1636 | } | |
1637 | ||
1638 | static void | |
1639 | port_poll_wait(const struct ofproto *ofproto_) | |
1640 | { | |
1641 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
1642 | dpif_port_poll_wait(ofproto->dpif); | |
1643 | } | |
1644 | ||
1645 | static int | |
1646 | port_is_lacp_current(const struct ofport *ofport_) | |
1647 | { | |
1648 | const struct ofport_dpif *ofport = ofport_dpif_cast(ofport_); | |
1649 | return (ofport->bundle && ofport->bundle->lacp | |
1650 | ? lacp_slave_is_current(ofport->bundle->lacp, ofport) | |
1651 | : -1); | |
1652 | } | |
1653 | \f | |
1654 | /* Upcall handling. */ | |
1655 | ||
1656 | /* Given 'upcall', of type DPIF_UC_ACTION or DPIF_UC_MISS, sends an | |
1657 | * OFPT_PACKET_IN message to each OpenFlow controller as necessary according to | |
1658 | * their individual configurations. | |
1659 | * | |
1660 | * If 'clone' is true, the caller retains ownership of 'upcall->packet'. | |
1661 | * Otherwise, ownership is transferred to this function. */ | |
1662 | static void | |
1663 | send_packet_in(struct ofproto_dpif *ofproto, struct dpif_upcall *upcall, | |
1664 | const struct flow *flow, bool clone) | |
1665 | { | |
1666 | struct ofputil_packet_in pin; | |
1667 | ||
1668 | pin.packet = upcall->packet; | |
1669 | pin.in_port = flow->in_port; | |
1670 | pin.reason = upcall->type == DPIF_UC_MISS ? OFPR_NO_MATCH : OFPR_ACTION; | |
1671 | pin.buffer_id = 0; /* not yet known */ | |
1672 | pin.send_len = upcall->userdata; | |
78bd1cd0 | 1673 | connmgr_send_packet_in(ofproto->up.connmgr, &pin, flow, |
abe529af BP |
1674 | clone ? NULL : upcall->packet); |
1675 | } | |
1676 | ||
1677 | static bool | |
1678 | process_special(struct ofproto_dpif *ofproto, const struct flow *flow, | |
1679 | const struct ofpbuf *packet) | |
1680 | { | |
b6e001b6 EJ |
1681 | struct ofport_dpif *ofport = get_ofp_port(ofproto, flow->in_port); |
1682 | ||
1683 | if (!ofport) { | |
1684 | return false; | |
1685 | } | |
1686 | ||
ef9819b5 | 1687 | if (ofport->cfm && cfm_should_process_flow(ofport->cfm, flow)) { |
b6e001b6 | 1688 | if (packet) { |
abe529af BP |
1689 | cfm_process_heartbeat(ofport->cfm, packet); |
1690 | } | |
1691 | return true; | |
b6e001b6 EJ |
1692 | } else if (ofport->bundle && ofport->bundle->lacp |
1693 | && flow->dl_type == htons(ETH_TYPE_LACP)) { | |
1694 | if (packet) { | |
1695 | lacp_process_packet(ofport->bundle->lacp, ofport, packet); | |
abe529af | 1696 | } |
da37ebac | 1697 | return true; |
abe529af BP |
1698 | } |
1699 | return false; | |
1700 | } | |
1701 | ||
1702 | static void | |
1703 | handle_miss_upcall(struct ofproto_dpif *ofproto, struct dpif_upcall *upcall) | |
1704 | { | |
1705 | struct facet *facet; | |
1706 | struct flow flow; | |
1707 | ||
1708 | /* Obtain in_port and tun_id, at least. */ | |
1709 | odp_flow_key_to_flow(upcall->key, upcall->key_len, &flow); | |
1710 | ||
1711 | /* Set header pointers in 'flow'. */ | |
1712 | flow_extract(upcall->packet, flow.tun_id, flow.in_port, &flow); | |
1713 | ||
1714 | /* Handle 802.1ag and LACP. */ | |
1715 | if (process_special(ofproto, &flow, upcall->packet)) { | |
1716 | ofpbuf_delete(upcall->packet); | |
6c1491fb | 1717 | ofproto->n_matches++; |
abe529af BP |
1718 | return; |
1719 | } | |
1720 | ||
1721 | /* Check with in-band control to see if this packet should be sent | |
1722 | * to the local port regardless of the flow table. */ | |
1723 | if (connmgr_msg_in_hook(ofproto->up.connmgr, &flow, upcall->packet)) { | |
df2c07f4 | 1724 | send_packet(ofproto, OVSP_LOCAL, upcall->packet); |
abe529af BP |
1725 | } |
1726 | ||
1727 | facet = facet_lookup_valid(ofproto, &flow); | |
1728 | if (!facet) { | |
29901626 | 1729 | struct rule_dpif *rule = rule_dpif_lookup(ofproto, &flow, 0); |
abe529af BP |
1730 | if (!rule) { |
1731 | /* Don't send a packet-in if OFPPC_NO_PACKET_IN asserted. */ | |
1732 | struct ofport_dpif *port = get_ofp_port(ofproto, flow.in_port); | |
1733 | if (port) { | |
1734 | if (port->up.opp.config & htonl(OFPPC_NO_PACKET_IN)) { | |
1735 | COVERAGE_INC(ofproto_dpif_no_packet_in); | |
1736 | /* XXX install 'drop' flow entry */ | |
1737 | ofpbuf_delete(upcall->packet); | |
1738 | return; | |
1739 | } | |
1740 | } else { | |
1741 | VLOG_WARN_RL(&rl, "packet-in on unknown port %"PRIu16, | |
1742 | flow.in_port); | |
1743 | } | |
1744 | ||
1745 | send_packet_in(ofproto, upcall, &flow, false); | |
1746 | return; | |
1747 | } | |
1748 | ||
1749 | facet = facet_create(rule, &flow, upcall->packet); | |
1750 | } else if (!facet->may_install) { | |
1751 | /* The facet is not installable, that is, we need to process every | |
1752 | * packet, so process the current packet's actions into 'facet'. */ | |
1753 | facet_make_actions(ofproto, facet, upcall->packet); | |
1754 | } | |
1755 | ||
1756 | if (facet->rule->up.cr.priority == FAIL_OPEN_PRIORITY) { | |
1757 | /* | |
1758 | * Extra-special case for fail-open mode. | |
1759 | * | |
1760 | * We are in fail-open mode and the packet matched the fail-open rule, | |
1761 | * but we are connected to a controller too. We should send the packet | |
1762 | * up to the controller in the hope that it will try to set up a flow | |
1763 | * and thereby allow us to exit fail-open. | |
1764 | * | |
1765 | * See the top-level comment in fail-open.c for more information. | |
1766 | */ | |
1767 | send_packet_in(ofproto, upcall, &flow, true); | |
1768 | } | |
1769 | ||
1770 | facet_execute(ofproto, facet, upcall->packet); | |
1771 | facet_install(ofproto, facet, false); | |
6c1491fb | 1772 | ofproto->n_matches++; |
abe529af BP |
1773 | } |
1774 | ||
1775 | static void | |
1776 | handle_upcall(struct ofproto_dpif *ofproto, struct dpif_upcall *upcall) | |
1777 | { | |
1778 | struct flow flow; | |
1779 | ||
1780 | switch (upcall->type) { | |
1781 | case DPIF_UC_ACTION: | |
1782 | COVERAGE_INC(ofproto_dpif_ctlr_action); | |
1783 | odp_flow_key_to_flow(upcall->key, upcall->key_len, &flow); | |
1784 | send_packet_in(ofproto, upcall, &flow, false); | |
1785 | break; | |
1786 | ||
1787 | case DPIF_UC_SAMPLE: | |
1788 | if (ofproto->sflow) { | |
1789 | odp_flow_key_to_flow(upcall->key, upcall->key_len, &flow); | |
bae473fe | 1790 | dpif_sflow_received(ofproto->sflow, upcall, &flow); |
abe529af BP |
1791 | } |
1792 | ofpbuf_delete(upcall->packet); | |
1793 | break; | |
1794 | ||
1795 | case DPIF_UC_MISS: | |
1796 | handle_miss_upcall(ofproto, upcall); | |
1797 | break; | |
1798 | ||
1799 | case DPIF_N_UC_TYPES: | |
1800 | default: | |
1801 | VLOG_WARN_RL(&rl, "upcall has unexpected type %"PRIu32, upcall->type); | |
1802 | break; | |
1803 | } | |
1804 | } | |
1805 | \f | |
1806 | /* Flow expiration. */ | |
1807 | ||
1808 | static int facet_max_idle(const struct ofproto_dpif *); | |
1809 | static void update_stats(struct ofproto_dpif *); | |
1810 | static void rule_expire(struct rule_dpif *); | |
1811 | static void expire_facets(struct ofproto_dpif *, int dp_max_idle); | |
1812 | ||
1813 | /* This function is called periodically by run(). Its job is to collect | |
1814 | * updates for the flows that have been installed into the datapath, most | |
1815 | * importantly when they last were used, and then use that information to | |
1816 | * expire flows that have not been used recently. | |
1817 | * | |
1818 | * Returns the number of milliseconds after which it should be called again. */ | |
1819 | static int | |
1820 | expire(struct ofproto_dpif *ofproto) | |
1821 | { | |
1822 | struct rule_dpif *rule, *next_rule; | |
0697b5c3 | 1823 | struct classifier *table; |
abe529af BP |
1824 | int dp_max_idle; |
1825 | ||
1826 | /* Update stats for each flow in the datapath. */ | |
1827 | update_stats(ofproto); | |
1828 | ||
1829 | /* Expire facets that have been idle too long. */ | |
1830 | dp_max_idle = facet_max_idle(ofproto); | |
1831 | expire_facets(ofproto, dp_max_idle); | |
1832 | ||
1833 | /* Expire OpenFlow flows whose idle_timeout or hard_timeout has passed. */ | |
0697b5c3 BP |
1834 | OFPROTO_FOR_EACH_TABLE (table, &ofproto->up) { |
1835 | struct cls_cursor cursor; | |
1836 | ||
1837 | cls_cursor_init(&cursor, table, NULL); | |
1838 | CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, up.cr, &cursor) { | |
1839 | rule_expire(rule); | |
1840 | } | |
abe529af BP |
1841 | } |
1842 | ||
1843 | /* All outstanding data in existing flows has been accounted, so it's a | |
1844 | * good time to do bond rebalancing. */ | |
1845 | if (ofproto->has_bonded_bundles) { | |
1846 | struct ofbundle *bundle; | |
1847 | ||
1848 | HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) { | |
1849 | if (bundle->bond) { | |
1850 | bond_rebalance(bundle->bond, &ofproto->revalidate_set); | |
1851 | } | |
1852 | } | |
1853 | } | |
1854 | ||
1855 | return MIN(dp_max_idle, 1000); | |
1856 | } | |
1857 | ||
1858 | /* Update 'packet_count', 'byte_count', and 'used' members of installed facets. | |
1859 | * | |
1860 | * This function also pushes statistics updates to rules which each facet | |
1861 | * resubmits into. Generally these statistics will be accurate. However, if a | |
1862 | * facet changes the rule it resubmits into at some time in between | |
1863 | * update_stats() runs, it is possible that statistics accrued to the | |
1864 | * old rule will be incorrectly attributed to the new rule. This could be | |
1865 | * avoided by calling update_stats() whenever rules are created or | |
1866 | * deleted. However, the performance impact of making so many calls to the | |
1867 | * datapath do not justify the benefit of having perfectly accurate statistics. | |
1868 | */ | |
1869 | static void | |
1870 | update_stats(struct ofproto_dpif *p) | |
1871 | { | |
1872 | const struct dpif_flow_stats *stats; | |
1873 | struct dpif_flow_dump dump; | |
1874 | const struct nlattr *key; | |
1875 | size_t key_len; | |
1876 | ||
1877 | dpif_flow_dump_start(&dump, p->dpif); | |
1878 | while (dpif_flow_dump_next(&dump, &key, &key_len, NULL, NULL, &stats)) { | |
1879 | struct facet *facet; | |
1880 | struct flow flow; | |
1881 | ||
1882 | if (odp_flow_key_to_flow(key, key_len, &flow)) { | |
1883 | struct ds s; | |
1884 | ||
1885 | ds_init(&s); | |
1886 | odp_flow_key_format(key, key_len, &s); | |
df2c07f4 | 1887 | VLOG_WARN_RL(&rl, "failed to convert datapath flow key to flow: %s", |
abe529af BP |
1888 | ds_cstr(&s)); |
1889 | ds_destroy(&s); | |
1890 | ||
1891 | continue; | |
1892 | } | |
1893 | facet = facet_find(p, &flow); | |
1894 | ||
1895 | if (facet && facet->installed) { | |
1896 | ||
1897 | if (stats->n_packets >= facet->dp_packet_count) { | |
1898 | uint64_t extra = stats->n_packets - facet->dp_packet_count; | |
1899 | facet->packet_count += extra; | |
1900 | } else { | |
1901 | VLOG_WARN_RL(&rl, "unexpected packet count from the datapath"); | |
1902 | } | |
1903 | ||
1904 | if (stats->n_bytes >= facet->dp_byte_count) { | |
1905 | facet->byte_count += stats->n_bytes - facet->dp_byte_count; | |
1906 | } else { | |
1907 | VLOG_WARN_RL(&rl, "unexpected byte count from datapath"); | |
1908 | } | |
1909 | ||
1910 | facet->dp_packet_count = stats->n_packets; | |
1911 | facet->dp_byte_count = stats->n_bytes; | |
1912 | ||
1913 | facet_update_time(p, facet, stats->used); | |
55af77bb | 1914 | facet_account(p, facet); |
abe529af BP |
1915 | facet_push_stats(facet); |
1916 | } else { | |
1917 | /* There's a flow in the datapath that we know nothing about. | |
1918 | * Delete it. */ | |
1919 | COVERAGE_INC(facet_unexpected); | |
1920 | dpif_flow_del(p->dpif, key, key_len, NULL); | |
1921 | } | |
1922 | } | |
1923 | dpif_flow_dump_done(&dump); | |
1924 | } | |
1925 | ||
1926 | /* Calculates and returns the number of milliseconds of idle time after which | |
1927 | * facets should expire from the datapath and we should fold their statistics | |
1928 | * into their parent rules in userspace. */ | |
1929 | static int | |
1930 | facet_max_idle(const struct ofproto_dpif *ofproto) | |
1931 | { | |
1932 | /* | |
1933 | * Idle time histogram. | |
1934 | * | |
1935 | * Most of the time a switch has a relatively small number of facets. When | |
1936 | * this is the case we might as well keep statistics for all of them in | |
1937 | * userspace and to cache them in the kernel datapath for performance as | |
1938 | * well. | |
1939 | * | |
1940 | * As the number of facets increases, the memory required to maintain | |
1941 | * statistics about them in userspace and in the kernel becomes | |
1942 | * significant. However, with a large number of facets it is likely that | |
1943 | * only a few of them are "heavy hitters" that consume a large amount of | |
1944 | * bandwidth. At this point, only heavy hitters are worth caching in the | |
1945 | * kernel and maintaining in userspaces; other facets we can discard. | |
1946 | * | |
1947 | * The technique used to compute the idle time is to build a histogram with | |
1948 | * N_BUCKETS buckets whose width is BUCKET_WIDTH msecs each. Each facet | |
1949 | * that is installed in the kernel gets dropped in the appropriate bucket. | |
1950 | * After the histogram has been built, we compute the cutoff so that only | |
084f5290 SH |
1951 | * the most-recently-used 1% of facets (but at least |
1952 | * ofproto->up.flow_eviction_threshold flows) are kept cached. At least | |
1953 | * the most-recently-used bucket of facets is kept, so actually an | |
1954 | * arbitrary number of facets can be kept in any given expiration run | |
1955 | * (though the next run will delete most of those unless they receive | |
1956 | * additional data). | |
abe529af BP |
1957 | * |
1958 | * This requires a second pass through the facets, in addition to the pass | |
1959 | * made by update_stats(), because the former function never looks | |
1960 | * at uninstallable facets. | |
1961 | */ | |
1962 | enum { BUCKET_WIDTH = ROUND_UP(100, TIME_UPDATE_INTERVAL) }; | |
1963 | enum { N_BUCKETS = 5000 / BUCKET_WIDTH }; | |
1964 | int buckets[N_BUCKETS] = { 0 }; | |
f11c1ef4 | 1965 | int total, subtotal, bucket; |
abe529af | 1966 | struct facet *facet; |
abe529af BP |
1967 | long long int now; |
1968 | int i; | |
1969 | ||
1970 | total = hmap_count(&ofproto->facets); | |
084f5290 | 1971 | if (total <= ofproto->up.flow_eviction_threshold) { |
abe529af BP |
1972 | return N_BUCKETS * BUCKET_WIDTH; |
1973 | } | |
1974 | ||
1975 | /* Build histogram. */ | |
1976 | now = time_msec(); | |
1977 | HMAP_FOR_EACH (facet, hmap_node, &ofproto->facets) { | |
1978 | long long int idle = now - facet->used; | |
1979 | int bucket = (idle <= 0 ? 0 | |
1980 | : idle >= BUCKET_WIDTH * N_BUCKETS ? N_BUCKETS - 1 | |
1981 | : (unsigned int) idle / BUCKET_WIDTH); | |
1982 | buckets[bucket]++; | |
1983 | } | |
1984 | ||
1985 | /* Find the first bucket whose flows should be expired. */ | |
f11c1ef4 SH |
1986 | subtotal = bucket = 0; |
1987 | do { | |
1988 | subtotal += buckets[bucket++]; | |
084f5290 SH |
1989 | } while (bucket < N_BUCKETS && |
1990 | subtotal < MAX(ofproto->up.flow_eviction_threshold, total / 100)); | |
abe529af BP |
1991 | |
1992 | if (VLOG_IS_DBG_ENABLED()) { | |
1993 | struct ds s; | |
1994 | ||
1995 | ds_init(&s); | |
1996 | ds_put_cstr(&s, "keep"); | |
1997 | for (i = 0; i < N_BUCKETS; i++) { | |
1998 | if (i == bucket) { | |
1999 | ds_put_cstr(&s, ", drop"); | |
2000 | } | |
2001 | if (buckets[i]) { | |
2002 | ds_put_format(&s, " %d:%d", i * BUCKET_WIDTH, buckets[i]); | |
2003 | } | |
2004 | } | |
2005 | VLOG_INFO("%s: %s (msec:count)", ofproto->up.name, ds_cstr(&s)); | |
2006 | ds_destroy(&s); | |
2007 | } | |
2008 | ||
2009 | return bucket * BUCKET_WIDTH; | |
2010 | } | |
2011 | ||
2012 | static void | |
2013 | facet_active_timeout(struct ofproto_dpif *ofproto, struct facet *facet) | |
2014 | { | |
2015 | if (ofproto->netflow && !facet_is_controller_flow(facet) && | |
2016 | netflow_active_timeout_expired(ofproto->netflow, &facet->nf_flow)) { | |
2017 | struct ofexpired expired; | |
2018 | ||
2019 | if (facet->installed) { | |
2020 | struct dpif_flow_stats stats; | |
2021 | ||
2022 | facet_put__(ofproto, facet, facet->actions, facet->actions_len, | |
2023 | &stats); | |
2024 | facet_update_stats(ofproto, facet, &stats); | |
2025 | } | |
2026 | ||
2027 | expired.flow = facet->flow; | |
2028 | expired.packet_count = facet->packet_count; | |
2029 | expired.byte_count = facet->byte_count; | |
2030 | expired.used = facet->used; | |
2031 | netflow_expire(ofproto->netflow, &facet->nf_flow, &expired); | |
2032 | } | |
2033 | } | |
2034 | ||
2035 | static void | |
2036 | expire_facets(struct ofproto_dpif *ofproto, int dp_max_idle) | |
2037 | { | |
2038 | long long int cutoff = time_msec() - dp_max_idle; | |
2039 | struct facet *facet, *next_facet; | |
2040 | ||
2041 | HMAP_FOR_EACH_SAFE (facet, next_facet, hmap_node, &ofproto->facets) { | |
2042 | facet_active_timeout(ofproto, facet); | |
2043 | if (facet->used < cutoff) { | |
2044 | facet_remove(ofproto, facet); | |
2045 | } | |
2046 | } | |
2047 | } | |
2048 | ||
2049 | /* If 'rule' is an OpenFlow rule, that has expired according to OpenFlow rules, | |
2050 | * then delete it entirely. */ | |
2051 | static void | |
2052 | rule_expire(struct rule_dpif *rule) | |
2053 | { | |
2054 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto); | |
2055 | struct facet *facet, *next_facet; | |
2056 | long long int now; | |
2057 | uint8_t reason; | |
2058 | ||
2059 | /* Has 'rule' expired? */ | |
2060 | now = time_msec(); | |
2061 | if (rule->up.hard_timeout | |
308881af | 2062 | && now > rule->up.modified + rule->up.hard_timeout * 1000) { |
abe529af BP |
2063 | reason = OFPRR_HARD_TIMEOUT; |
2064 | } else if (rule->up.idle_timeout && list_is_empty(&rule->facets) | |
2065 | && now > rule->used + rule->up.idle_timeout * 1000) { | |
2066 | reason = OFPRR_IDLE_TIMEOUT; | |
2067 | } else { | |
2068 | return; | |
2069 | } | |
2070 | ||
2071 | COVERAGE_INC(ofproto_dpif_expired); | |
2072 | ||
2073 | /* Update stats. (This is a no-op if the rule expired due to an idle | |
2074 | * timeout, because that only happens when the rule has no facets left.) */ | |
2075 | LIST_FOR_EACH_SAFE (facet, next_facet, list_node, &rule->facets) { | |
2076 | facet_remove(ofproto, facet); | |
2077 | } | |
2078 | ||
2079 | /* Get rid of the rule. */ | |
2080 | ofproto_rule_expire(&rule->up, reason); | |
2081 | } | |
2082 | \f | |
2083 | /* Facets. */ | |
2084 | ||
2085 | /* Creates and returns a new facet owned by 'rule', given a 'flow' and an | |
2086 | * example 'packet' within that flow. | |
2087 | * | |
2088 | * The caller must already have determined that no facet with an identical | |
2089 | * 'flow' exists in 'ofproto' and that 'flow' is the best match for 'rule' in | |
2090 | * the ofproto's classifier table. */ | |
2091 | static struct facet * | |
2092 | facet_create(struct rule_dpif *rule, const struct flow *flow, | |
2093 | const struct ofpbuf *packet) | |
2094 | { | |
2095 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto); | |
2096 | struct facet *facet; | |
2097 | ||
2098 | facet = xzalloc(sizeof *facet); | |
2099 | facet->used = time_msec(); | |
2100 | hmap_insert(&ofproto->facets, &facet->hmap_node, flow_hash(flow, 0)); | |
2101 | list_push_back(&rule->facets, &facet->list_node); | |
2102 | facet->rule = rule; | |
2103 | facet->flow = *flow; | |
2104 | netflow_flow_init(&facet->nf_flow); | |
2105 | netflow_flow_update_time(ofproto->netflow, &facet->nf_flow, facet->used); | |
2106 | ||
2107 | facet_make_actions(ofproto, facet, packet); | |
2108 | ||
2109 | return facet; | |
2110 | } | |
2111 | ||
2112 | static void | |
2113 | facet_free(struct facet *facet) | |
2114 | { | |
2115 | free(facet->actions); | |
2116 | free(facet); | |
2117 | } | |
2118 | ||
2119 | /* Executes, within 'ofproto', the 'n_actions' actions in 'actions' on | |
2120 | * 'packet', which arrived on 'in_port'. | |
2121 | * | |
2122 | * Takes ownership of 'packet'. */ | |
2123 | static bool | |
2124 | execute_odp_actions(struct ofproto_dpif *ofproto, const struct flow *flow, | |
2125 | const struct nlattr *odp_actions, size_t actions_len, | |
2126 | struct ofpbuf *packet) | |
2127 | { | |
2128 | if (actions_len == NLA_ALIGN(NLA_HDRLEN + sizeof(uint64_t)) | |
df2c07f4 | 2129 | && odp_actions->nla_type == OVS_ACTION_ATTR_USERSPACE) { |
abe529af BP |
2130 | /* As an optimization, avoid a round-trip from userspace to kernel to |
2131 | * userspace. This also avoids possibly filling up kernel packet | |
2132 | * buffers along the way. */ | |
2133 | struct dpif_upcall upcall; | |
2134 | ||
2135 | upcall.type = DPIF_UC_ACTION; | |
2136 | upcall.packet = packet; | |
2137 | upcall.key = NULL; | |
2138 | upcall.key_len = 0; | |
2139 | upcall.userdata = nl_attr_get_u64(odp_actions); | |
2140 | upcall.sample_pool = 0; | |
2141 | upcall.actions = NULL; | |
2142 | upcall.actions_len = 0; | |
2143 | ||
2144 | send_packet_in(ofproto, &upcall, flow, false); | |
2145 | ||
2146 | return true; | |
2147 | } else { | |
80e5eed9 BP |
2148 | struct odputil_keybuf keybuf; |
2149 | struct ofpbuf key; | |
abe529af BP |
2150 | int error; |
2151 | ||
80e5eed9 BP |
2152 | ofpbuf_use_stack(&key, &keybuf, sizeof keybuf); |
2153 | odp_flow_key_from_flow(&key, flow); | |
2154 | ||
2155 | error = dpif_execute(ofproto->dpif, key.data, key.size, | |
2156 | odp_actions, actions_len, packet); | |
2157 | ||
abe529af BP |
2158 | ofpbuf_delete(packet); |
2159 | return !error; | |
2160 | } | |
2161 | } | |
2162 | ||
2163 | /* Executes the actions indicated by 'facet' on 'packet' and credits 'facet''s | |
2164 | * statistics appropriately. 'packet' must have at least sizeof(struct | |
2165 | * ofp_packet_in) bytes of headroom. | |
2166 | * | |
2167 | * For correct results, 'packet' must actually be in 'facet''s flow; that is, | |
2168 | * applying flow_extract() to 'packet' would yield the same flow as | |
2169 | * 'facet->flow'. | |
2170 | * | |
df2c07f4 JP |
2171 | * 'facet' must have accurately composed datapath actions; that is, it must |
2172 | * not be in need of revalidation. | |
abe529af BP |
2173 | * |
2174 | * Takes ownership of 'packet'. */ | |
2175 | static void | |
2176 | facet_execute(struct ofproto_dpif *ofproto, struct facet *facet, | |
2177 | struct ofpbuf *packet) | |
2178 | { | |
2179 | struct dpif_flow_stats stats; | |
2180 | ||
2181 | assert(ofpbuf_headroom(packet) >= sizeof(struct ofp_packet_in)); | |
2182 | ||
2183 | flow_extract_stats(&facet->flow, packet, &stats); | |
2184 | stats.used = time_msec(); | |
2185 | if (execute_odp_actions(ofproto, &facet->flow, | |
2186 | facet->actions, facet->actions_len, packet)) { | |
2187 | facet_update_stats(ofproto, facet, &stats); | |
2188 | } | |
2189 | } | |
2190 | ||
2191 | /* Remove 'facet' from 'ofproto' and free up the associated memory: | |
2192 | * | |
2193 | * - If 'facet' was installed in the datapath, uninstalls it and updates its | |
2194 | * rule's statistics, via facet_uninstall(). | |
2195 | * | |
2196 | * - Removes 'facet' from its rule and from ofproto->facets. | |
2197 | */ | |
2198 | static void | |
2199 | facet_remove(struct ofproto_dpif *ofproto, struct facet *facet) | |
2200 | { | |
2201 | facet_uninstall(ofproto, facet); | |
2202 | facet_flush_stats(ofproto, facet); | |
2203 | hmap_remove(&ofproto->facets, &facet->hmap_node); | |
2204 | list_remove(&facet->list_node); | |
2205 | facet_free(facet); | |
2206 | } | |
2207 | ||
df2c07f4 | 2208 | /* Composes the datapath actions for 'facet' based on its rule's actions. */ |
abe529af BP |
2209 | static void |
2210 | facet_make_actions(struct ofproto_dpif *p, struct facet *facet, | |
2211 | const struct ofpbuf *packet) | |
2212 | { | |
2213 | const struct rule_dpif *rule = facet->rule; | |
2214 | struct ofpbuf *odp_actions; | |
2215 | struct action_xlate_ctx ctx; | |
2216 | ||
2217 | action_xlate_ctx_init(&ctx, p, &facet->flow, packet); | |
2218 | odp_actions = xlate_actions(&ctx, rule->up.actions, rule->up.n_actions); | |
2219 | facet->tags = ctx.tags; | |
2220 | facet->may_install = ctx.may_set_up_flow; | |
75a75043 BP |
2221 | facet->has_learn = ctx.has_learn; |
2222 | facet->has_normal = ctx.has_normal; | |
abe529af BP |
2223 | facet->nf_flow.output_iface = ctx.nf_output_iface; |
2224 | ||
2225 | if (facet->actions_len != odp_actions->size | |
2226 | || memcmp(facet->actions, odp_actions->data, odp_actions->size)) { | |
2227 | free(facet->actions); | |
2228 | facet->actions_len = odp_actions->size; | |
2229 | facet->actions = xmemdup(odp_actions->data, odp_actions->size); | |
2230 | } | |
2231 | ||
2232 | ofpbuf_delete(odp_actions); | |
2233 | } | |
2234 | ||
3a88e544 BP |
2235 | /* Updates 'facet''s flow in the datapath setting its actions to 'actions_len' |
2236 | * bytes of actions in 'actions'. If 'stats' is non-null, statistics counters | |
2237 | * in the datapath will be zeroed and 'stats' will be updated with traffic new | |
2238 | * since 'facet' was last updated. | |
2239 | * | |
2240 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
abe529af BP |
2241 | static int |
2242 | facet_put__(struct ofproto_dpif *ofproto, struct facet *facet, | |
2243 | const struct nlattr *actions, size_t actions_len, | |
2244 | struct dpif_flow_stats *stats) | |
2245 | { | |
2246 | struct odputil_keybuf keybuf; | |
2247 | enum dpif_flow_put_flags flags; | |
2248 | struct ofpbuf key; | |
3a88e544 | 2249 | int ret; |
abe529af BP |
2250 | |
2251 | flags = DPIF_FP_CREATE | DPIF_FP_MODIFY; | |
2252 | if (stats) { | |
2253 | flags |= DPIF_FP_ZERO_STATS; | |
abe529af BP |
2254 | } |
2255 | ||
2256 | ofpbuf_use_stack(&key, &keybuf, sizeof keybuf); | |
2257 | odp_flow_key_from_flow(&key, &facet->flow); | |
2258 | ||
3a88e544 BP |
2259 | ret = dpif_flow_put(ofproto->dpif, flags, key.data, key.size, |
2260 | actions, actions_len, stats); | |
2261 | ||
2262 | if (stats) { | |
2263 | facet_reset_dp_stats(facet, stats); | |
2264 | } | |
2265 | ||
2266 | return ret; | |
abe529af BP |
2267 | } |
2268 | ||
2269 | /* If 'facet' is installable, inserts or re-inserts it into 'p''s datapath. If | |
2270 | * 'zero_stats' is true, clears any existing statistics from the datapath for | |
2271 | * 'facet'. */ | |
2272 | static void | |
2273 | facet_install(struct ofproto_dpif *p, struct facet *facet, bool zero_stats) | |
2274 | { | |
2275 | struct dpif_flow_stats stats; | |
2276 | ||
2277 | if (facet->may_install | |
2278 | && !facet_put__(p, facet, facet->actions, facet->actions_len, | |
2279 | zero_stats ? &stats : NULL)) { | |
2280 | facet->installed = true; | |
2281 | } | |
2282 | } | |
2283 | ||
d78be13b BP |
2284 | static int |
2285 | vlan_tci_to_openflow_vlan(ovs_be16 vlan_tci) | |
2286 | { | |
2287 | return vlan_tci != htons(0) ? vlan_tci_to_vid(vlan_tci) : OFP_VLAN_NONE; | |
2288 | } | |
2289 | ||
abe529af | 2290 | static void |
55af77bb | 2291 | facet_account(struct ofproto_dpif *ofproto, struct facet *facet) |
abe529af | 2292 | { |
55af77bb | 2293 | uint64_t n_bytes; |
abe529af | 2294 | const struct nlattr *a; |
abe529af | 2295 | unsigned int left; |
d78be13b | 2296 | ovs_be16 vlan_tci; |
abe529af | 2297 | |
55af77bb | 2298 | if (facet->byte_count <= facet->accounted_bytes) { |
abe529af BP |
2299 | return; |
2300 | } | |
55af77bb EJ |
2301 | n_bytes = facet->byte_count - facet->accounted_bytes; |
2302 | facet->accounted_bytes = facet->byte_count; | |
abe529af | 2303 | |
75a75043 | 2304 | /* Feed information from the active flows back into the learning table to |
abe529af BP |
2305 | * ensure that table is always in sync with what is actually flowing |
2306 | * through the datapath. */ | |
75a75043 BP |
2307 | if (facet->has_learn || facet->has_normal) { |
2308 | struct action_xlate_ctx ctx; | |
abe529af | 2309 | |
75a75043 BP |
2310 | action_xlate_ctx_init(&ctx, ofproto, &facet->flow, NULL); |
2311 | ctx.may_learn = true; | |
2312 | ofpbuf_delete(xlate_actions(&ctx, facet->rule->up.actions, | |
2313 | facet->rule->up.n_actions)); | |
2314 | } | |
abe529af | 2315 | |
75a75043 | 2316 | if (!facet->has_normal || !ofproto->has_bonded_bundles) { |
abe529af BP |
2317 | return; |
2318 | } | |
d78be13b BP |
2319 | |
2320 | /* This loop feeds byte counters to bond_account() for rebalancing to use | |
2321 | * as a basis. We also need to track the actual VLAN on which the packet | |
2322 | * is going to be sent to ensure that it matches the one passed to | |
2323 | * bond_choose_output_slave(). (Otherwise, we will account to the wrong | |
2324 | * hash bucket.) */ | |
2325 | vlan_tci = facet->flow.vlan_tci; | |
abe529af | 2326 | NL_ATTR_FOR_EACH_UNSAFE (a, left, facet->actions, facet->actions_len) { |
d78be13b | 2327 | struct ofport_dpif *port; |
abe529af | 2328 | |
d78be13b | 2329 | switch (nl_attr_type(a)) { |
df2c07f4 | 2330 | case OVS_ACTION_ATTR_OUTPUT: |
abe529af BP |
2331 | port = get_odp_port(ofproto, nl_attr_get_u32(a)); |
2332 | if (port && port->bundle && port->bundle->bond) { | |
d78be13b BP |
2333 | bond_account(port->bundle->bond, &facet->flow, |
2334 | vlan_tci_to_openflow_vlan(vlan_tci), n_bytes); | |
abe529af | 2335 | } |
d78be13b BP |
2336 | break; |
2337 | ||
d9065a90 | 2338 | case OVS_ACTION_ATTR_POP_VLAN: |
d78be13b BP |
2339 | vlan_tci = htons(0); |
2340 | break; | |
2341 | ||
d9065a90 | 2342 | case OVS_ACTION_ATTR_PUSH_VLAN: |
d78be13b BP |
2343 | vlan_tci = nl_attr_get_be16(a); |
2344 | break; | |
abe529af BP |
2345 | } |
2346 | } | |
2347 | } | |
2348 | ||
2349 | /* If 'rule' is installed in the datapath, uninstalls it. */ | |
2350 | static void | |
2351 | facet_uninstall(struct ofproto_dpif *p, struct facet *facet) | |
2352 | { | |
2353 | if (facet->installed) { | |
2354 | struct odputil_keybuf keybuf; | |
2355 | struct dpif_flow_stats stats; | |
2356 | struct ofpbuf key; | |
3a88e544 | 2357 | int error; |
abe529af BP |
2358 | |
2359 | ofpbuf_use_stack(&key, &keybuf, sizeof keybuf); | |
2360 | odp_flow_key_from_flow(&key, &facet->flow); | |
2361 | ||
3a88e544 BP |
2362 | error = dpif_flow_del(p->dpif, key.data, key.size, &stats); |
2363 | facet_reset_dp_stats(facet, &stats); | |
2364 | if (!error) { | |
abe529af BP |
2365 | facet_update_stats(p, facet, &stats); |
2366 | } | |
2367 | facet->installed = false; | |
abe529af BP |
2368 | } else { |
2369 | assert(facet->dp_packet_count == 0); | |
2370 | assert(facet->dp_byte_count == 0); | |
2371 | } | |
2372 | } | |
2373 | ||
2374 | /* Returns true if the only action for 'facet' is to send to the controller. | |
2375 | * (We don't report NetFlow expiration messages for such facets because they | |
2376 | * are just part of the control logic for the network, not real traffic). */ | |
2377 | static bool | |
2378 | facet_is_controller_flow(struct facet *facet) | |
2379 | { | |
2380 | return (facet | |
2381 | && facet->rule->up.n_actions == 1 | |
2382 | && action_outputs_to_port(&facet->rule->up.actions[0], | |
2383 | htons(OFPP_CONTROLLER))); | |
2384 | } | |
2385 | ||
3a88e544 BP |
2386 | /* Resets 'facet''s datapath statistics counters. This should be called when |
2387 | * 'facet''s statistics are cleared in the datapath. If 'stats' is non-null, | |
2388 | * it should contain the statistics returned by dpif when 'facet' was reset in | |
2389 | * the datapath. 'stats' will be modified to only included statistics new | |
2390 | * since 'facet' was last updated. */ | |
2391 | static void | |
2392 | facet_reset_dp_stats(struct facet *facet, struct dpif_flow_stats *stats) | |
2393 | { | |
2394 | if (stats && facet->dp_packet_count <= stats->n_packets | |
2395 | && facet->dp_byte_count <= stats->n_bytes) { | |
2396 | stats->n_packets -= facet->dp_packet_count; | |
2397 | stats->n_bytes -= facet->dp_byte_count; | |
2398 | } | |
2399 | ||
2400 | facet->dp_packet_count = 0; | |
2401 | facet->dp_byte_count = 0; | |
2402 | } | |
2403 | ||
abe529af BP |
2404 | /* Folds all of 'facet''s statistics into its rule. Also updates the |
2405 | * accounting ofhook and emits a NetFlow expiration if appropriate. All of | |
2406 | * 'facet''s statistics in the datapath should have been zeroed and folded into | |
2407 | * its packet and byte counts before this function is called. */ | |
2408 | static void | |
2409 | facet_flush_stats(struct ofproto_dpif *ofproto, struct facet *facet) | |
2410 | { | |
2411 | assert(!facet->dp_byte_count); | |
2412 | assert(!facet->dp_packet_count); | |
2413 | ||
2414 | facet_push_stats(facet); | |
55af77bb | 2415 | facet_account(ofproto, facet); |
abe529af BP |
2416 | |
2417 | if (ofproto->netflow && !facet_is_controller_flow(facet)) { | |
2418 | struct ofexpired expired; | |
2419 | expired.flow = facet->flow; | |
2420 | expired.packet_count = facet->packet_count; | |
2421 | expired.byte_count = facet->byte_count; | |
2422 | expired.used = facet->used; | |
2423 | netflow_expire(ofproto->netflow, &facet->nf_flow, &expired); | |
2424 | } | |
2425 | ||
2426 | facet->rule->packet_count += facet->packet_count; | |
2427 | facet->rule->byte_count += facet->byte_count; | |
2428 | ||
2429 | /* Reset counters to prevent double counting if 'facet' ever gets | |
2430 | * reinstalled. */ | |
bbb5d219 | 2431 | facet_reset_counters(facet); |
abe529af BP |
2432 | |
2433 | netflow_flow_clear(&facet->nf_flow); | |
2434 | } | |
2435 | ||
2436 | /* Searches 'ofproto''s table of facets for one exactly equal to 'flow'. | |
2437 | * Returns it if found, otherwise a null pointer. | |
2438 | * | |
2439 | * The returned facet might need revalidation; use facet_lookup_valid() | |
2440 | * instead if that is important. */ | |
2441 | static struct facet * | |
2442 | facet_find(struct ofproto_dpif *ofproto, const struct flow *flow) | |
2443 | { | |
2444 | struct facet *facet; | |
2445 | ||
2446 | HMAP_FOR_EACH_WITH_HASH (facet, hmap_node, flow_hash(flow, 0), | |
2447 | &ofproto->facets) { | |
2448 | if (flow_equal(flow, &facet->flow)) { | |
2449 | return facet; | |
2450 | } | |
2451 | } | |
2452 | ||
2453 | return NULL; | |
2454 | } | |
2455 | ||
2456 | /* Searches 'ofproto''s table of facets for one exactly equal to 'flow'. | |
2457 | * Returns it if found, otherwise a null pointer. | |
2458 | * | |
2459 | * The returned facet is guaranteed to be valid. */ | |
2460 | static struct facet * | |
2461 | facet_lookup_valid(struct ofproto_dpif *ofproto, const struct flow *flow) | |
2462 | { | |
2463 | struct facet *facet = facet_find(ofproto, flow); | |
2464 | ||
2465 | /* The facet we found might not be valid, since we could be in need of | |
2466 | * revalidation. If it is not valid, don't return it. */ | |
2467 | if (facet | |
2468 | && ofproto->need_revalidate | |
2469 | && !facet_revalidate(ofproto, facet)) { | |
2470 | COVERAGE_INC(facet_invalidated); | |
2471 | return NULL; | |
2472 | } | |
2473 | ||
2474 | return facet; | |
2475 | } | |
2476 | ||
2477 | /* Re-searches 'ofproto''s classifier for a rule matching 'facet': | |
2478 | * | |
2479 | * - If the rule found is different from 'facet''s current rule, moves | |
2480 | * 'facet' to the new rule and recompiles its actions. | |
2481 | * | |
2482 | * - If the rule found is the same as 'facet''s current rule, leaves 'facet' | |
2483 | * where it is and recompiles its actions anyway. | |
2484 | * | |
2485 | * - If there is none, destroys 'facet'. | |
2486 | * | |
2487 | * Returns true if 'facet' still exists, false if it has been destroyed. */ | |
2488 | static bool | |
2489 | facet_revalidate(struct ofproto_dpif *ofproto, struct facet *facet) | |
2490 | { | |
2491 | struct action_xlate_ctx ctx; | |
2492 | struct ofpbuf *odp_actions; | |
2493 | struct rule_dpif *new_rule; | |
2494 | bool actions_changed; | |
2495 | ||
2496 | COVERAGE_INC(facet_revalidate); | |
2497 | ||
2498 | /* Determine the new rule. */ | |
29901626 | 2499 | new_rule = rule_dpif_lookup(ofproto, &facet->flow, 0); |
abe529af BP |
2500 | if (!new_rule) { |
2501 | /* No new rule, so delete the facet. */ | |
2502 | facet_remove(ofproto, facet); | |
2503 | return false; | |
2504 | } | |
2505 | ||
df2c07f4 | 2506 | /* Calculate new datapath actions. |
abe529af BP |
2507 | * |
2508 | * We do not modify any 'facet' state yet, because we might need to, e.g., | |
2509 | * emit a NetFlow expiration and, if so, we need to have the old state | |
2510 | * around to properly compose it. */ | |
2511 | action_xlate_ctx_init(&ctx, ofproto, &facet->flow, NULL); | |
2512 | odp_actions = xlate_actions(&ctx, | |
2513 | new_rule->up.actions, new_rule->up.n_actions); | |
2514 | actions_changed = (facet->actions_len != odp_actions->size | |
2515 | || memcmp(facet->actions, odp_actions->data, | |
2516 | facet->actions_len)); | |
2517 | ||
df2c07f4 JP |
2518 | /* If the datapath actions changed or the installability changed, |
2519 | * then we need to talk to the datapath. */ | |
abe529af BP |
2520 | if (actions_changed || ctx.may_set_up_flow != facet->installed) { |
2521 | if (ctx.may_set_up_flow) { | |
2522 | struct dpif_flow_stats stats; | |
2523 | ||
2524 | facet_put__(ofproto, facet, | |
2525 | odp_actions->data, odp_actions->size, &stats); | |
2526 | facet_update_stats(ofproto, facet, &stats); | |
2527 | } else { | |
2528 | facet_uninstall(ofproto, facet); | |
2529 | } | |
2530 | ||
2531 | /* The datapath flow is gone or has zeroed stats, so push stats out of | |
2532 | * 'facet' into 'rule'. */ | |
2533 | facet_flush_stats(ofproto, facet); | |
2534 | } | |
2535 | ||
2536 | /* Update 'facet' now that we've taken care of all the old state. */ | |
2537 | facet->tags = ctx.tags; | |
2538 | facet->nf_flow.output_iface = ctx.nf_output_iface; | |
2539 | facet->may_install = ctx.may_set_up_flow; | |
75a75043 BP |
2540 | facet->has_learn = ctx.has_learn; |
2541 | facet->has_normal = ctx.has_normal; | |
abe529af BP |
2542 | if (actions_changed) { |
2543 | free(facet->actions); | |
2544 | facet->actions_len = odp_actions->size; | |
2545 | facet->actions = xmemdup(odp_actions->data, odp_actions->size); | |
2546 | } | |
2547 | if (facet->rule != new_rule) { | |
2548 | COVERAGE_INC(facet_changed_rule); | |
2549 | list_remove(&facet->list_node); | |
2550 | list_push_back(&new_rule->facets, &facet->list_node); | |
2551 | facet->rule = new_rule; | |
2552 | facet->used = new_rule->up.created; | |
2553 | facet->rs_used = facet->used; | |
2554 | } | |
2555 | ||
2556 | ofpbuf_delete(odp_actions); | |
2557 | ||
2558 | return true; | |
2559 | } | |
2560 | ||
2561 | /* Updates 'facet''s used time. Caller is responsible for calling | |
2562 | * facet_push_stats() to update the flows which 'facet' resubmits into. */ | |
2563 | static void | |
2564 | facet_update_time(struct ofproto_dpif *ofproto, struct facet *facet, | |
2565 | long long int used) | |
2566 | { | |
2567 | if (used > facet->used) { | |
2568 | facet->used = used; | |
2569 | if (used > facet->rule->used) { | |
2570 | facet->rule->used = used; | |
2571 | } | |
2572 | netflow_flow_update_time(ofproto->netflow, &facet->nf_flow, used); | |
2573 | } | |
2574 | } | |
2575 | ||
2576 | /* Folds the statistics from 'stats' into the counters in 'facet'. | |
2577 | * | |
2578 | * Because of the meaning of a facet's counters, it only makes sense to do this | |
2579 | * if 'stats' are not tracked in the datapath, that is, if 'stats' represents a | |
2580 | * packet that was sent by hand or if it represents statistics that have been | |
2581 | * cleared out of the datapath. */ | |
2582 | static void | |
2583 | facet_update_stats(struct ofproto_dpif *ofproto, struct facet *facet, | |
2584 | const struct dpif_flow_stats *stats) | |
2585 | { | |
2586 | if (stats->n_packets || stats->used > facet->used) { | |
2587 | facet_update_time(ofproto, facet, stats->used); | |
2588 | facet->packet_count += stats->n_packets; | |
2589 | facet->byte_count += stats->n_bytes; | |
2590 | facet_push_stats(facet); | |
2591 | netflow_flow_update_flags(&facet->nf_flow, stats->tcp_flags); | |
2592 | } | |
2593 | } | |
2594 | ||
bbb5d219 EJ |
2595 | static void |
2596 | facet_reset_counters(struct facet *facet) | |
2597 | { | |
2598 | facet->packet_count = 0; | |
2599 | facet->byte_count = 0; | |
2600 | facet->rs_packet_count = 0; | |
2601 | facet->rs_byte_count = 0; | |
2602 | facet->accounted_bytes = 0; | |
2603 | } | |
2604 | ||
abe529af BP |
2605 | static void |
2606 | facet_push_stats(struct facet *facet) | |
2607 | { | |
2608 | uint64_t rs_packets, rs_bytes; | |
2609 | ||
2610 | assert(facet->packet_count >= facet->rs_packet_count); | |
2611 | assert(facet->byte_count >= facet->rs_byte_count); | |
2612 | assert(facet->used >= facet->rs_used); | |
2613 | ||
2614 | rs_packets = facet->packet_count - facet->rs_packet_count; | |
2615 | rs_bytes = facet->byte_count - facet->rs_byte_count; | |
2616 | ||
2617 | if (rs_packets || rs_bytes || facet->used > facet->rs_used) { | |
2618 | facet->rs_packet_count = facet->packet_count; | |
2619 | facet->rs_byte_count = facet->byte_count; | |
2620 | facet->rs_used = facet->used; | |
2621 | ||
2622 | flow_push_stats(facet->rule, &facet->flow, | |
2623 | rs_packets, rs_bytes, facet->used); | |
2624 | } | |
2625 | } | |
2626 | ||
2627 | struct ofproto_push { | |
2628 | struct action_xlate_ctx ctx; | |
2629 | uint64_t packets; | |
2630 | uint64_t bytes; | |
2631 | long long int used; | |
2632 | }; | |
2633 | ||
2634 | static void | |
2635 | push_resubmit(struct action_xlate_ctx *ctx, struct rule_dpif *rule) | |
2636 | { | |
2637 | struct ofproto_push *push = CONTAINER_OF(ctx, struct ofproto_push, ctx); | |
2638 | ||
2639 | if (rule) { | |
2640 | rule->packet_count += push->packets; | |
2641 | rule->byte_count += push->bytes; | |
2642 | rule->used = MAX(push->used, rule->used); | |
2643 | } | |
2644 | } | |
2645 | ||
2646 | /* Pushes flow statistics to the rules which 'flow' resubmits into given | |
2647 | * 'rule''s actions. */ | |
2648 | static void | |
2649 | flow_push_stats(const struct rule_dpif *rule, | |
2650 | struct flow *flow, uint64_t packets, uint64_t bytes, | |
2651 | long long int used) | |
2652 | { | |
2653 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto); | |
2654 | struct ofproto_push push; | |
2655 | ||
2656 | push.packets = packets; | |
2657 | push.bytes = bytes; | |
2658 | push.used = used; | |
2659 | ||
2660 | action_xlate_ctx_init(&push.ctx, ofproto, flow, NULL); | |
2661 | push.ctx.resubmit_hook = push_resubmit; | |
2662 | ofpbuf_delete(xlate_actions(&push.ctx, | |
2663 | rule->up.actions, rule->up.n_actions)); | |
2664 | } | |
2665 | \f | |
2666 | /* Rules. */ | |
2667 | ||
2668 | static struct rule_dpif * | |
29901626 BP |
2669 | rule_dpif_lookup(struct ofproto_dpif *ofproto, const struct flow *flow, |
2670 | uint8_t table_id) | |
abe529af | 2671 | { |
9cdaaebe BP |
2672 | if (table_id >= N_TABLES) { |
2673 | return NULL; | |
2674 | } | |
2675 | ||
154896e3 | 2676 | return rule_dpif_cast(rule_from_cls_rule( |
29901626 | 2677 | classifier_lookup(&ofproto->up.tables[table_id], |
6c1491fb | 2678 | flow))); |
abe529af BP |
2679 | } |
2680 | ||
7ee20df1 BP |
2681 | static void |
2682 | complete_operation(struct rule_dpif *rule) | |
2683 | { | |
2684 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto); | |
2685 | ||
54a9cbc9 | 2686 | rule_invalidate(rule); |
7ee20df1 BP |
2687 | if (clogged) { |
2688 | struct dpif_completion *c = xmalloc(sizeof *c); | |
2689 | c->op = rule->up.pending; | |
2690 | list_push_back(&ofproto->completions, &c->list_node); | |
2691 | } else { | |
2692 | ofoperation_complete(rule->up.pending, 0); | |
2693 | } | |
2694 | } | |
2695 | ||
abe529af BP |
2696 | static struct rule * |
2697 | rule_alloc(void) | |
2698 | { | |
2699 | struct rule_dpif *rule = xmalloc(sizeof *rule); | |
2700 | return &rule->up; | |
2701 | } | |
2702 | ||
2703 | static void | |
2704 | rule_dealloc(struct rule *rule_) | |
2705 | { | |
2706 | struct rule_dpif *rule = rule_dpif_cast(rule_); | |
2707 | free(rule); | |
2708 | } | |
2709 | ||
2710 | static int | |
2711 | rule_construct(struct rule *rule_) | |
2712 | { | |
2713 | struct rule_dpif *rule = rule_dpif_cast(rule_); | |
2714 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto); | |
7ee20df1 | 2715 | struct rule_dpif *victim; |
54a9cbc9 | 2716 | uint8_t table_id; |
5bf0e941 BP |
2717 | int error; |
2718 | ||
2719 | error = validate_actions(rule->up.actions, rule->up.n_actions, | |
2720 | &rule->up.cr.flow, ofproto->max_ports); | |
2721 | if (error) { | |
2722 | return error; | |
2723 | } | |
abe529af BP |
2724 | |
2725 | rule->used = rule->up.created; | |
2726 | rule->packet_count = 0; | |
2727 | rule->byte_count = 0; | |
abe529af | 2728 | |
7ee20df1 BP |
2729 | victim = rule_dpif_cast(ofoperation_get_victim(rule->up.pending)); |
2730 | if (victim && !list_is_empty(&victim->facets)) { | |
2731 | struct facet *facet; | |
2732 | ||
2733 | rule->facets = victim->facets; | |
2734 | list_moved(&rule->facets); | |
2735 | LIST_FOR_EACH (facet, list_node, &rule->facets) { | |
bbb5d219 EJ |
2736 | /* XXX: We're only clearing our local counters here. It's possible |
2737 | * that quite a few packets are unaccounted for in the datapath | |
2738 | * statistics. These will be accounted to the new rule instead of | |
2739 | * cleared as required. This could be fixed by clearing out the | |
2740 | * datapath statistics for this facet, but currently it doesn't | |
2741 | * seem worth it. */ | |
2742 | facet_reset_counters(facet); | |
7ee20df1 BP |
2743 | facet->rule = rule; |
2744 | } | |
2745 | } else { | |
2746 | /* Must avoid list_moved() in this case. */ | |
2747 | list_init(&rule->facets); | |
2748 | } | |
abe529af | 2749 | |
54a9cbc9 BP |
2750 | table_id = rule->up.table_id; |
2751 | rule->tag = (victim ? victim->tag | |
2752 | : table_id == 0 ? 0 | |
2753 | : rule_calculate_tag(&rule->up.cr.flow, &rule->up.cr.wc, | |
2754 | ofproto->tables[table_id].basis)); | |
2755 | ||
7ee20df1 | 2756 | complete_operation(rule); |
abe529af BP |
2757 | return 0; |
2758 | } | |
2759 | ||
2760 | static void | |
2761 | rule_destruct(struct rule *rule_) | |
2762 | { | |
2763 | struct rule_dpif *rule = rule_dpif_cast(rule_); | |
2764 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto); | |
2765 | struct facet *facet, *next_facet; | |
2766 | ||
abe529af BP |
2767 | LIST_FOR_EACH_SAFE (facet, next_facet, list_node, &rule->facets) { |
2768 | facet_revalidate(ofproto, facet); | |
2769 | } | |
7ee20df1 BP |
2770 | |
2771 | complete_operation(rule); | |
abe529af BP |
2772 | } |
2773 | ||
2774 | static void | |
2775 | rule_get_stats(struct rule *rule_, uint64_t *packets, uint64_t *bytes) | |
2776 | { | |
2777 | struct rule_dpif *rule = rule_dpif_cast(rule_); | |
2778 | struct facet *facet; | |
2779 | ||
2780 | /* Start from historical data for 'rule' itself that are no longer tracked | |
2781 | * in facets. This counts, for example, facets that have expired. */ | |
2782 | *packets = rule->packet_count; | |
2783 | *bytes = rule->byte_count; | |
2784 | ||
2785 | /* Add any statistics that are tracked by facets. This includes | |
2786 | * statistical data recently updated by ofproto_update_stats() as well as | |
2787 | * stats for packets that were executed "by hand" via dpif_execute(). */ | |
2788 | LIST_FOR_EACH (facet, list_node, &rule->facets) { | |
2789 | *packets += facet->packet_count; | |
2790 | *bytes += facet->byte_count; | |
2791 | } | |
2792 | } | |
2793 | ||
5bf0e941 | 2794 | static int |
abe529af BP |
2795 | rule_execute(struct rule *rule_, struct flow *flow, struct ofpbuf *packet) |
2796 | { | |
2797 | struct rule_dpif *rule = rule_dpif_cast(rule_); | |
2798 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto); | |
2799 | struct action_xlate_ctx ctx; | |
2800 | struct ofpbuf *odp_actions; | |
2801 | struct facet *facet; | |
2802 | size_t size; | |
2803 | ||
2804 | /* First look for a related facet. If we find one, account it to that. */ | |
2805 | facet = facet_lookup_valid(ofproto, flow); | |
2806 | if (facet && facet->rule == rule) { | |
2807 | facet_execute(ofproto, facet, packet); | |
5bf0e941 | 2808 | return 0; |
abe529af BP |
2809 | } |
2810 | ||
2811 | /* Otherwise, if 'rule' is in fact the correct rule for 'packet', then | |
2812 | * create a new facet for it and use that. */ | |
29901626 | 2813 | if (rule_dpif_lookup(ofproto, flow, 0) == rule) { |
abe529af BP |
2814 | facet = facet_create(rule, flow, packet); |
2815 | facet_execute(ofproto, facet, packet); | |
2816 | facet_install(ofproto, facet, true); | |
5bf0e941 | 2817 | return 0; |
abe529af BP |
2818 | } |
2819 | ||
2820 | /* We can't account anything to a facet. If we were to try, then that | |
2821 | * facet would have a non-matching rule, busting our invariants. */ | |
2822 | action_xlate_ctx_init(&ctx, ofproto, flow, packet); | |
2823 | odp_actions = xlate_actions(&ctx, rule->up.actions, rule->up.n_actions); | |
2824 | size = packet->size; | |
2825 | if (execute_odp_actions(ofproto, flow, odp_actions->data, | |
2826 | odp_actions->size, packet)) { | |
2827 | rule->used = time_msec(); | |
2828 | rule->packet_count++; | |
2829 | rule->byte_count += size; | |
2830 | flow_push_stats(rule, flow, 1, size, rule->used); | |
2831 | } | |
2832 | ofpbuf_delete(odp_actions); | |
5bf0e941 BP |
2833 | |
2834 | return 0; | |
abe529af BP |
2835 | } |
2836 | ||
7ee20df1 BP |
2837 | static void |
2838 | rule_modify_actions(struct rule *rule_) | |
abe529af BP |
2839 | { |
2840 | struct rule_dpif *rule = rule_dpif_cast(rule_); | |
2841 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto); | |
2842 | int error; | |
2843 | ||
7ee20df1 BP |
2844 | error = validate_actions(rule->up.actions, rule->up.n_actions, |
2845 | &rule->up.cr.flow, ofproto->max_ports); | |
2846 | if (error) { | |
2847 | ofoperation_complete(rule->up.pending, error); | |
2848 | return; | |
abe529af | 2849 | } |
7ee20df1 BP |
2850 | |
2851 | complete_operation(rule); | |
abe529af BP |
2852 | } |
2853 | \f | |
b2fda3ef | 2854 | /* Sends 'packet' out of port 'odp_port' within 'p'. |
abe529af BP |
2855 | * Returns 0 if successful, otherwise a positive errno value. */ |
2856 | static int | |
b2fda3ef | 2857 | send_packet(struct ofproto_dpif *ofproto, uint32_t odp_port, |
abe529af BP |
2858 | const struct ofpbuf *packet) |
2859 | { | |
80e5eed9 BP |
2860 | struct ofpbuf key, odp_actions; |
2861 | struct odputil_keybuf keybuf; | |
2862 | struct flow flow; | |
abe529af BP |
2863 | int error; |
2864 | ||
80e5eed9 BP |
2865 | flow_extract((struct ofpbuf *) packet, 0, 0, &flow); |
2866 | ofpbuf_use_stack(&key, &keybuf, sizeof keybuf); | |
2867 | odp_flow_key_from_flow(&key, &flow); | |
2868 | ||
abe529af | 2869 | ofpbuf_init(&odp_actions, 32); |
df2c07f4 | 2870 | nl_msg_put_u32(&odp_actions, OVS_ACTION_ATTR_OUTPUT, odp_port); |
80e5eed9 BP |
2871 | error = dpif_execute(ofproto->dpif, |
2872 | key.data, key.size, | |
2873 | odp_actions.data, odp_actions.size, | |
abe529af BP |
2874 | packet); |
2875 | ofpbuf_uninit(&odp_actions); | |
2876 | ||
2877 | if (error) { | |
2878 | VLOG_WARN_RL(&rl, "%s: failed to send packet on port %"PRIu32" (%s)", | |
2879 | ofproto->up.name, odp_port, strerror(error)); | |
2880 | } | |
2881 | return error; | |
2882 | } | |
2883 | \f | |
df2c07f4 | 2884 | /* OpenFlow to datapath action translation. */ |
abe529af BP |
2885 | |
2886 | static void do_xlate_actions(const union ofp_action *in, size_t n_in, | |
2887 | struct action_xlate_ctx *ctx); | |
4cd78906 | 2888 | static void xlate_normal(struct action_xlate_ctx *); |
abe529af | 2889 | |
b3e9b2ed EJ |
2890 | static void |
2891 | commit_odp_actions(struct action_xlate_ctx *ctx) | |
2892 | { | |
2893 | const struct flow *flow = &ctx->flow; | |
2894 | struct flow *base = &ctx->base_flow; | |
2895 | struct ofpbuf *odp_actions = ctx->odp_actions; | |
2896 | ||
2897 | if (base->tun_id != flow->tun_id) { | |
df2c07f4 | 2898 | nl_msg_put_be64(odp_actions, OVS_ACTION_ATTR_SET_TUNNEL, flow->tun_id); |
b3e9b2ed EJ |
2899 | base->tun_id = flow->tun_id; |
2900 | } | |
2901 | ||
2902 | if (base->nw_src != flow->nw_src) { | |
df2c07f4 | 2903 | nl_msg_put_be32(odp_actions, OVS_ACTION_ATTR_SET_NW_SRC, flow->nw_src); |
b3e9b2ed EJ |
2904 | base->nw_src = flow->nw_src; |
2905 | } | |
2906 | ||
2907 | if (base->nw_dst != flow->nw_dst) { | |
df2c07f4 | 2908 | nl_msg_put_be32(odp_actions, OVS_ACTION_ATTR_SET_NW_DST, flow->nw_dst); |
b3e9b2ed EJ |
2909 | base->nw_dst = flow->nw_dst; |
2910 | } | |
2911 | ||
150a9f15 | 2912 | if (base->nw_tos != flow->nw_tos) { |
df2c07f4 | 2913 | nl_msg_put_u8(odp_actions, OVS_ACTION_ATTR_SET_NW_TOS, flow->nw_tos); |
150a9f15 BP |
2914 | base->nw_tos = flow->nw_tos; |
2915 | } | |
2916 | ||
b3e9b2ed EJ |
2917 | if (base->vlan_tci != flow->vlan_tci) { |
2918 | if (!(flow->vlan_tci & htons(VLAN_CFI))) { | |
d9065a90 | 2919 | nl_msg_put_flag(odp_actions, OVS_ACTION_ATTR_POP_VLAN); |
b3e9b2ed | 2920 | } else { |
2f2df2f4 | 2921 | if (base->vlan_tci != htons(0)) { |
d9065a90 PS |
2922 | nl_msg_put_flag(odp_actions, OVS_ACTION_ATTR_POP_VLAN); |
2923 | } | |
2924 | nl_msg_put_be16(odp_actions, OVS_ACTION_ATTR_PUSH_VLAN, | |
b3e9b2ed EJ |
2925 | flow->vlan_tci & ~htons(VLAN_CFI)); |
2926 | } | |
2927 | base->vlan_tci = flow->vlan_tci; | |
2928 | } | |
2929 | ||
2930 | if (base->tp_src != flow->tp_src) { | |
df2c07f4 | 2931 | nl_msg_put_be16(odp_actions, OVS_ACTION_ATTR_SET_TP_SRC, flow->tp_src); |
b3e9b2ed EJ |
2932 | base->tp_src = flow->tp_src; |
2933 | } | |
2934 | ||
2935 | if (base->tp_dst != flow->tp_dst) { | |
df2c07f4 | 2936 | nl_msg_put_be16(odp_actions, OVS_ACTION_ATTR_SET_TP_DST, flow->tp_dst); |
b3e9b2ed EJ |
2937 | base->tp_dst = flow->tp_dst; |
2938 | } | |
2939 | ||
2940 | if (!eth_addr_equals(base->dl_src, flow->dl_src)) { | |
df2c07f4 | 2941 | nl_msg_put_unspec(odp_actions, OVS_ACTION_ATTR_SET_DL_SRC, |
b3e9b2ed EJ |
2942 | flow->dl_src, ETH_ADDR_LEN); |
2943 | memcpy(base->dl_src, flow->dl_src, ETH_ADDR_LEN); | |
2944 | } | |
2945 | ||
2946 | if (!eth_addr_equals(base->dl_dst, flow->dl_dst)) { | |
df2c07f4 | 2947 | nl_msg_put_unspec(odp_actions, OVS_ACTION_ATTR_SET_DL_DST, |
b3e9b2ed EJ |
2948 | flow->dl_dst, ETH_ADDR_LEN); |
2949 | memcpy(base->dl_dst, flow->dl_dst, ETH_ADDR_LEN); | |
2950 | } | |
2951 | ||
2952 | if (ctx->base_priority != ctx->priority) { | |
2953 | if (ctx->priority) { | |
df2c07f4 | 2954 | nl_msg_put_u32(odp_actions, OVS_ACTION_ATTR_SET_PRIORITY, |
b3e9b2ed EJ |
2955 | ctx->priority); |
2956 | } else { | |
df2c07f4 | 2957 | nl_msg_put_flag(odp_actions, OVS_ACTION_ATTR_POP_PRIORITY); |
b3e9b2ed EJ |
2958 | } |
2959 | ctx->base_priority = ctx->priority; | |
2960 | } | |
2961 | } | |
2962 | ||
abe529af BP |
2963 | static void |
2964 | add_output_action(struct action_xlate_ctx *ctx, uint16_t ofp_port) | |
2965 | { | |
2966 | const struct ofport_dpif *ofport = get_ofp_port(ctx->ofproto, ofp_port); | |
2967 | uint16_t odp_port = ofp_port_to_odp_port(ofp_port); | |
2968 | ||
2969 | if (ofport) { | |
2970 | if (ofport->up.opp.config & htonl(OFPPC_NO_FWD)) { | |
2971 | /* Forwarding disabled on port. */ | |
2972 | return; | |
2973 | } | |
2974 | } else { | |
2975 | /* | |
2976 | * We don't have an ofport record for this port, but it doesn't hurt to | |
2977 | * allow forwarding to it anyhow. Maybe such a port will appear later | |
2978 | * and we're pre-populating the flow table. | |
2979 | */ | |
2980 | } | |
2981 | ||
b3e9b2ed | 2982 | commit_odp_actions(ctx); |
df2c07f4 | 2983 | nl_msg_put_u32(ctx->odp_actions, OVS_ACTION_ATTR_OUTPUT, odp_port); |
abe529af BP |
2984 | ctx->nf_output_iface = ofp_port; |
2985 | } | |
2986 | ||
2987 | static void | |
29901626 BP |
2988 | xlate_table_action(struct action_xlate_ctx *ctx, |
2989 | uint16_t in_port, uint8_t table_id) | |
abe529af BP |
2990 | { |
2991 | if (ctx->recurse < MAX_RESUBMIT_RECURSION) { | |
54a9cbc9 | 2992 | struct ofproto_dpif *ofproto = ctx->ofproto; |
abe529af BP |
2993 | struct rule_dpif *rule; |
2994 | uint16_t old_in_port; | |
29901626 BP |
2995 | uint8_t old_table_id; |
2996 | ||
2997 | old_table_id = ctx->table_id; | |
2998 | ctx->table_id = table_id; | |
abe529af | 2999 | |
54a9cbc9 | 3000 | /* Look up a flow with 'in_port' as the input port. */ |
abe529af BP |
3001 | old_in_port = ctx->flow.in_port; |
3002 | ctx->flow.in_port = in_port; | |
54a9cbc9 BP |
3003 | rule = rule_dpif_lookup(ofproto, &ctx->flow, table_id); |
3004 | ||
3005 | /* Tag the flow. */ | |
3006 | if (table_id > 0 && table_id < N_TABLES) { | |
3007 | struct table_dpif *table = &ofproto->tables[table_id]; | |
3008 | if (table->other_table) { | |
3009 | ctx->tags |= (rule | |
3010 | ? rule->tag | |
3011 | : rule_calculate_tag(&ctx->flow, | |
3012 | &table->other_table->wc, | |
3013 | table->basis)); | |
3014 | } | |
3015 | } | |
3016 | ||
3017 | /* Restore the original input port. Otherwise OFPP_NORMAL and | |
3018 | * OFPP_IN_PORT will have surprising behavior. */ | |
abe529af BP |
3019 | ctx->flow.in_port = old_in_port; |
3020 | ||
3021 | if (ctx->resubmit_hook) { | |
3022 | ctx->resubmit_hook(ctx, rule); | |
3023 | } | |
3024 | ||
3025 | if (rule) { | |
3026 | ctx->recurse++; | |
3027 | do_xlate_actions(rule->up.actions, rule->up.n_actions, ctx); | |
3028 | ctx->recurse--; | |
3029 | } | |
29901626 BP |
3030 | |
3031 | ctx->table_id = old_table_id; | |
abe529af BP |
3032 | } else { |
3033 | static struct vlog_rate_limit recurse_rl = VLOG_RATE_LIMIT_INIT(1, 1); | |
3034 | ||
29901626 | 3035 | VLOG_ERR_RL(&recurse_rl, "resubmit actions recursed over %d times", |
abe529af BP |
3036 | MAX_RESUBMIT_RECURSION); |
3037 | } | |
3038 | } | |
3039 | ||
29901626 BP |
3040 | static void |
3041 | xlate_resubmit_table(struct action_xlate_ctx *ctx, | |
3042 | const struct nx_action_resubmit *nar) | |
3043 | { | |
3044 | uint16_t in_port; | |
3045 | uint8_t table_id; | |
3046 | ||
3047 | in_port = (nar->in_port == htons(OFPP_IN_PORT) | |
3048 | ? ctx->flow.in_port | |
3049 | : ntohs(nar->in_port)); | |
3050 | table_id = nar->table == 255 ? ctx->table_id : nar->table; | |
3051 | ||
3052 | xlate_table_action(ctx, in_port, table_id); | |
3053 | } | |
3054 | ||
abe529af | 3055 | static void |
b3e9b2ed | 3056 | flood_packets(struct action_xlate_ctx *ctx, ovs_be32 mask) |
abe529af BP |
3057 | { |
3058 | struct ofport_dpif *ofport; | |
3059 | ||
b3e9b2ed EJ |
3060 | commit_odp_actions(ctx); |
3061 | HMAP_FOR_EACH (ofport, up.hmap_node, &ctx->ofproto->up.ports) { | |
abe529af | 3062 | uint16_t ofp_port = ofport->up.ofp_port; |
b3e9b2ed | 3063 | if (ofp_port != ctx->flow.in_port && !(ofport->up.opp.config & mask)) { |
df2c07f4 | 3064 | nl_msg_put_u32(ctx->odp_actions, OVS_ACTION_ATTR_OUTPUT, |
abe529af BP |
3065 | ofport->odp_port); |
3066 | } | |
3067 | } | |
b3e9b2ed EJ |
3068 | |
3069 | ctx->nf_output_iface = NF_OUT_FLOOD; | |
abe529af BP |
3070 | } |
3071 | ||
3072 | static void | |
3073 | xlate_output_action__(struct action_xlate_ctx *ctx, | |
3074 | uint16_t port, uint16_t max_len) | |
3075 | { | |
3076 | uint16_t prev_nf_output_iface = ctx->nf_output_iface; | |
3077 | ||
3078 | ctx->nf_output_iface = NF_OUT_DROP; | |
3079 | ||
3080 | switch (port) { | |
3081 | case OFPP_IN_PORT: | |
3082 | add_output_action(ctx, ctx->flow.in_port); | |
3083 | break; | |
3084 | case OFPP_TABLE: | |
29901626 | 3085 | xlate_table_action(ctx, ctx->flow.in_port, ctx->table_id); |
abe529af BP |
3086 | break; |
3087 | case OFPP_NORMAL: | |
3088 | xlate_normal(ctx); | |
3089 | break; | |
3090 | case OFPP_FLOOD: | |
b3e9b2ed | 3091 | flood_packets(ctx, htonl(OFPPC_NO_FLOOD)); |
abe529af BP |
3092 | break; |
3093 | case OFPP_ALL: | |
b3e9b2ed | 3094 | flood_packets(ctx, htonl(0)); |
abe529af BP |
3095 | break; |
3096 | case OFPP_CONTROLLER: | |
b3e9b2ed | 3097 | commit_odp_actions(ctx); |
df2c07f4 | 3098 | nl_msg_put_u64(ctx->odp_actions, OVS_ACTION_ATTR_USERSPACE, max_len); |
abe529af BP |
3099 | break; |
3100 | case OFPP_LOCAL: | |
3101 | add_output_action(ctx, OFPP_LOCAL); | |
3102 | break; | |
e81d2933 EJ |
3103 | case OFPP_NONE: |
3104 | break; | |
abe529af BP |
3105 | default: |
3106 | if (port != ctx->flow.in_port) { | |
3107 | add_output_action(ctx, port); | |
3108 | } | |
3109 | break; | |
3110 | } | |
3111 | ||
3112 | if (prev_nf_output_iface == NF_OUT_FLOOD) { | |
3113 | ctx->nf_output_iface = NF_OUT_FLOOD; | |
3114 | } else if (ctx->nf_output_iface == NF_OUT_DROP) { | |
3115 | ctx->nf_output_iface = prev_nf_output_iface; | |
3116 | } else if (prev_nf_output_iface != NF_OUT_DROP && | |
3117 | ctx->nf_output_iface != NF_OUT_FLOOD) { | |
3118 | ctx->nf_output_iface = NF_OUT_MULTI; | |
3119 | } | |
3120 | } | |
3121 | ||
f694937d EJ |
3122 | static void |
3123 | xlate_output_reg_action(struct action_xlate_ctx *ctx, | |
3124 | const struct nx_action_output_reg *naor) | |
3125 | { | |
3126 | uint64_t ofp_port; | |
3127 | ||
3128 | ofp_port = nxm_read_field_bits(naor->src, naor->ofs_nbits, &ctx->flow); | |
3129 | ||
3130 | if (ofp_port <= UINT16_MAX) { | |
3131 | xlate_output_action__(ctx, ofp_port, ntohs(naor->max_len)); | |
3132 | } | |
3133 | } | |
3134 | ||
abe529af BP |
3135 | static void |
3136 | xlate_output_action(struct action_xlate_ctx *ctx, | |
3137 | const struct ofp_action_output *oao) | |
3138 | { | |
3139 | xlate_output_action__(ctx, ntohs(oao->port), ntohs(oao->max_len)); | |
3140 | } | |
3141 | ||
abe529af BP |
3142 | static void |
3143 | xlate_enqueue_action(struct action_xlate_ctx *ctx, | |
3144 | const struct ofp_action_enqueue *oae) | |
3145 | { | |
3146 | uint16_t ofp_port, odp_port; | |
b3e9b2ed | 3147 | uint32_t ctx_priority, priority; |
abe529af BP |
3148 | int error; |
3149 | ||
3150 | error = dpif_queue_to_priority(ctx->ofproto->dpif, ntohl(oae->queue_id), | |
3151 | &priority); | |
3152 | if (error) { | |
3153 | /* Fall back to ordinary output action. */ | |
3154 | xlate_output_action__(ctx, ntohs(oae->port), 0); | |
3155 | return; | |
3156 | } | |
3157 | ||
df2c07f4 | 3158 | /* Figure out datapath output port. */ |
abe529af BP |
3159 | ofp_port = ntohs(oae->port); |
3160 | if (ofp_port == OFPP_IN_PORT) { | |
3161 | ofp_port = ctx->flow.in_port; | |
3162 | } | |
3163 | odp_port = ofp_port_to_odp_port(ofp_port); | |
3164 | ||
df2c07f4 | 3165 | /* Add datapath actions. */ |
b3e9b2ed EJ |
3166 | ctx_priority = ctx->priority; |
3167 | ctx->priority = priority; | |
abe529af | 3168 | add_output_action(ctx, odp_port); |
b3e9b2ed | 3169 | ctx->priority = ctx_priority; |
abe529af BP |
3170 | |
3171 | /* Update NetFlow output port. */ | |
3172 | if (ctx->nf_output_iface == NF_OUT_DROP) { | |
3173 | ctx->nf_output_iface = odp_port; | |
3174 | } else if (ctx->nf_output_iface != NF_OUT_FLOOD) { | |
3175 | ctx->nf_output_iface = NF_OUT_MULTI; | |
3176 | } | |
3177 | } | |
3178 | ||
3179 | static void | |
3180 | xlate_set_queue_action(struct action_xlate_ctx *ctx, | |
3181 | const struct nx_action_set_queue *nasq) | |
3182 | { | |
3183 | uint32_t priority; | |
3184 | int error; | |
3185 | ||
3186 | error = dpif_queue_to_priority(ctx->ofproto->dpif, ntohl(nasq->queue_id), | |
3187 | &priority); | |
3188 | if (error) { | |
3189 | /* Couldn't translate queue to a priority, so ignore. A warning | |
3190 | * has already been logged. */ | |
3191 | return; | |
3192 | } | |
3193 | ||
afabef2b | 3194 | ctx->priority = priority; |
abe529af BP |
3195 | } |
3196 | ||
3197 | struct xlate_reg_state { | |
3198 | ovs_be16 vlan_tci; | |
3199 | ovs_be64 tun_id; | |
3200 | }; | |
3201 | ||
abe529af BP |
3202 | static void |
3203 | xlate_autopath(struct action_xlate_ctx *ctx, | |
3204 | const struct nx_action_autopath *naa) | |
3205 | { | |
3206 | uint16_t ofp_port = ntohl(naa->id); | |
3207 | struct ofport_dpif *port = get_ofp_port(ctx->ofproto, ofp_port); | |
3208 | ||
3209 | if (!port || !port->bundle) { | |
3210 | ofp_port = OFPP_NONE; | |
3211 | } else if (port->bundle->bond) { | |
3212 | /* Autopath does not support VLAN hashing. */ | |
3213 | struct ofport_dpif *slave = bond_choose_output_slave( | |
3214 | port->bundle->bond, &ctx->flow, OFP_VLAN_NONE, &ctx->tags); | |
3215 | if (slave) { | |
3216 | ofp_port = slave->up.ofp_port; | |
3217 | } | |
3218 | } | |
3219 | autopath_execute(naa, &ctx->flow, ofp_port); | |
3220 | } | |
3221 | ||
daff3353 EJ |
3222 | static bool |
3223 | slave_enabled_cb(uint16_t ofp_port, void *ofproto_) | |
3224 | { | |
3225 | struct ofproto_dpif *ofproto = ofproto_; | |
3226 | struct ofport_dpif *port; | |
3227 | ||
3228 | switch (ofp_port) { | |
3229 | case OFPP_IN_PORT: | |
3230 | case OFPP_TABLE: | |
3231 | case OFPP_NORMAL: | |
3232 | case OFPP_FLOOD: | |
3233 | case OFPP_ALL: | |
3234 | case OFPP_LOCAL: | |
3235 | return true; | |
3236 | case OFPP_CONTROLLER: /* Not supported by the bundle action. */ | |
3237 | return false; | |
3238 | default: | |
3239 | port = get_ofp_port(ofproto, ofp_port); | |
3240 | return port ? port->may_enable : false; | |
3241 | } | |
3242 | } | |
3243 | ||
75a75043 BP |
3244 | static void |
3245 | xlate_learn_action(struct action_xlate_ctx *ctx, | |
3246 | const struct nx_action_learn *learn) | |
3247 | { | |
3248 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 1); | |
3249 | struct ofputil_flow_mod fm; | |
3250 | int error; | |
3251 | ||
3252 | learn_execute(learn, &ctx->flow, &fm); | |
3253 | ||
3254 | error = ofproto_flow_mod(&ctx->ofproto->up, &fm); | |
3255 | if (error && !VLOG_DROP_WARN(&rl)) { | |
3256 | char *msg = ofputil_error_to_string(error); | |
3257 | VLOG_WARN("learning action failed to modify flow table (%s)", msg); | |
3258 | free(msg); | |
3259 | } | |
3260 | ||
3261 | free(fm.actions); | |
3262 | } | |
3263 | ||
abe529af BP |
3264 | static void |
3265 | do_xlate_actions(const union ofp_action *in, size_t n_in, | |
3266 | struct action_xlate_ctx *ctx) | |
3267 | { | |
3268 | const struct ofport_dpif *port; | |
abe529af | 3269 | const union ofp_action *ia; |
b4b8c781 | 3270 | size_t left; |
abe529af BP |
3271 | |
3272 | port = get_ofp_port(ctx->ofproto, ctx->flow.in_port); | |
3273 | if (port | |
3274 | && port->up.opp.config & htonl(OFPPC_NO_RECV | OFPPC_NO_RECV_STP) && | |
3275 | port->up.opp.config & (eth_addr_equals(ctx->flow.dl_dst, eth_addr_stp) | |
3276 | ? htonl(OFPPC_NO_RECV_STP) | |
3277 | : htonl(OFPPC_NO_RECV))) { | |
3278 | /* Drop this flow. */ | |
3279 | return; | |
3280 | } | |
3281 | ||
b4b8c781 | 3282 | OFPUTIL_ACTION_FOR_EACH_UNSAFE (ia, left, in, n_in) { |
abe529af | 3283 | const struct ofp_action_dl_addr *oada; |
38f2e360 BP |
3284 | const struct nx_action_resubmit *nar; |
3285 | const struct nx_action_set_tunnel *nast; | |
3286 | const struct nx_action_set_queue *nasq; | |
3287 | const struct nx_action_multipath *nam; | |
3288 | const struct nx_action_autopath *naa; | |
daff3353 | 3289 | const struct nx_action_bundle *nab; |
f694937d | 3290 | const struct nx_action_output_reg *naor; |
38f2e360 BP |
3291 | enum ofputil_action_code code; |
3292 | ovs_be64 tun_id; | |
3293 | ||
3294 | code = ofputil_decode_action_unsafe(ia); | |
3295 | switch (code) { | |
3296 | case OFPUTIL_OFPAT_OUTPUT: | |
abe529af BP |
3297 | xlate_output_action(ctx, &ia->output); |
3298 | break; | |
3299 | ||
38f2e360 | 3300 | case OFPUTIL_OFPAT_SET_VLAN_VID: |
abe529af BP |
3301 | ctx->flow.vlan_tci &= ~htons(VLAN_VID_MASK); |
3302 | ctx->flow.vlan_tci |= ia->vlan_vid.vlan_vid | htons(VLAN_CFI); | |
abe529af BP |
3303 | break; |
3304 | ||
38f2e360 | 3305 | case OFPUTIL_OFPAT_SET_VLAN_PCP: |
abe529af BP |
3306 | ctx->flow.vlan_tci &= ~htons(VLAN_PCP_MASK); |
3307 | ctx->flow.vlan_tci |= htons( | |
3308 | (ia->vlan_pcp.vlan_pcp << VLAN_PCP_SHIFT) | VLAN_CFI); | |
abe529af BP |
3309 | break; |
3310 | ||
38f2e360 | 3311 | case OFPUTIL_OFPAT_STRIP_VLAN: |
abe529af | 3312 | ctx->flow.vlan_tci = htons(0); |
abe529af BP |
3313 | break; |
3314 | ||
38f2e360 | 3315 | case OFPUTIL_OFPAT_SET_DL_SRC: |
abe529af | 3316 | oada = ((struct ofp_action_dl_addr *) ia); |
abe529af BP |
3317 | memcpy(ctx->flow.dl_src, oada->dl_addr, ETH_ADDR_LEN); |
3318 | break; | |
3319 | ||
38f2e360 | 3320 | case OFPUTIL_OFPAT_SET_DL_DST: |
abe529af | 3321 | oada = ((struct ofp_action_dl_addr *) ia); |
abe529af BP |
3322 | memcpy(ctx->flow.dl_dst, oada->dl_addr, ETH_ADDR_LEN); |
3323 | break; | |
3324 | ||
38f2e360 | 3325 | case OFPUTIL_OFPAT_SET_NW_SRC: |
abe529af BP |
3326 | ctx->flow.nw_src = ia->nw_addr.nw_addr; |
3327 | break; | |
3328 | ||
38f2e360 | 3329 | case OFPUTIL_OFPAT_SET_NW_DST: |
abe529af BP |
3330 | ctx->flow.nw_dst = ia->nw_addr.nw_addr; |
3331 | break; | |
3332 | ||
38f2e360 | 3333 | case OFPUTIL_OFPAT_SET_NW_TOS: |
1fa96cf4 | 3334 | ctx->flow.nw_tos = ia->nw_tos.nw_tos & IP_DSCP_MASK; |
abe529af BP |
3335 | break; |
3336 | ||
38f2e360 | 3337 | case OFPUTIL_OFPAT_SET_TP_SRC: |
abe529af BP |
3338 | ctx->flow.tp_src = ia->tp_port.tp_port; |
3339 | break; | |
3340 | ||
38f2e360 | 3341 | case OFPUTIL_OFPAT_SET_TP_DST: |
abe529af BP |
3342 | ctx->flow.tp_dst = ia->tp_port.tp_port; |
3343 | break; | |
3344 | ||
38f2e360 BP |
3345 | case OFPUTIL_OFPAT_ENQUEUE: |
3346 | xlate_enqueue_action(ctx, (const struct ofp_action_enqueue *) ia); | |
3347 | break; | |
3348 | ||
3349 | case OFPUTIL_NXAST_RESUBMIT: | |
3350 | nar = (const struct nx_action_resubmit *) ia; | |
29901626 BP |
3351 | xlate_table_action(ctx, ntohs(nar->in_port), ctx->table_id); |
3352 | break; | |
3353 | ||
3354 | case OFPUTIL_NXAST_RESUBMIT_TABLE: | |
3355 | xlate_resubmit_table(ctx, (const struct nx_action_resubmit *) ia); | |
abe529af BP |
3356 | break; |
3357 | ||
38f2e360 BP |
3358 | case OFPUTIL_NXAST_SET_TUNNEL: |
3359 | nast = (const struct nx_action_set_tunnel *) ia; | |
3360 | tun_id = htonll(ntohl(nast->tun_id)); | |
3361 | ctx->flow.tun_id = tun_id; | |
3362 | break; | |
3363 | ||
3364 | case OFPUTIL_NXAST_SET_QUEUE: | |
3365 | nasq = (const struct nx_action_set_queue *) ia; | |
3366 | xlate_set_queue_action(ctx, nasq); | |
3367 | break; | |
3368 | ||
3369 | case OFPUTIL_NXAST_POP_QUEUE: | |
3370 | ctx->priority = 0; | |
3371 | break; | |
3372 | ||
3373 | case OFPUTIL_NXAST_REG_MOVE: | |
3374 | nxm_execute_reg_move((const struct nx_action_reg_move *) ia, | |
3375 | &ctx->flow); | |
3376 | break; | |
3377 | ||
3378 | case OFPUTIL_NXAST_REG_LOAD: | |
3379 | nxm_execute_reg_load((const struct nx_action_reg_load *) ia, | |
3380 | &ctx->flow); | |
3381 | break; | |
3382 | ||
3383 | case OFPUTIL_NXAST_NOTE: | |
3384 | /* Nothing to do. */ | |
3385 | break; | |
3386 | ||
3387 | case OFPUTIL_NXAST_SET_TUNNEL64: | |
3388 | tun_id = ((const struct nx_action_set_tunnel64 *) ia)->tun_id; | |
3389 | ctx->flow.tun_id = tun_id; | |
3390 | break; | |
3391 | ||
3392 | case OFPUTIL_NXAST_MULTIPATH: | |
3393 | nam = (const struct nx_action_multipath *) ia; | |
3394 | multipath_execute(nam, &ctx->flow); | |
abe529af BP |
3395 | break; |
3396 | ||
38f2e360 BP |
3397 | case OFPUTIL_NXAST_AUTOPATH: |
3398 | naa = (const struct nx_action_autopath *) ia; | |
3399 | xlate_autopath(ctx, naa); | |
abe529af | 3400 | break; |
daff3353 EJ |
3401 | |
3402 | case OFPUTIL_NXAST_BUNDLE: | |
3403 | ctx->ofproto->has_bundle_action = true; | |
3404 | nab = (const struct nx_action_bundle *) ia; | |
3405 | xlate_output_action__(ctx, bundle_execute(nab, &ctx->flow, | |
3406 | slave_enabled_cb, | |
3407 | ctx->ofproto), 0); | |
3408 | break; | |
a368bb53 EJ |
3409 | |
3410 | case OFPUTIL_NXAST_BUNDLE_LOAD: | |
3411 | ctx->ofproto->has_bundle_action = true; | |
3412 | nab = (const struct nx_action_bundle *) ia; | |
3413 | bundle_execute_load(nab, &ctx->flow, slave_enabled_cb, | |
3414 | ctx->ofproto); | |
3415 | break; | |
f694937d EJ |
3416 | |
3417 | case OFPUTIL_NXAST_OUTPUT_REG: | |
3418 | naor = (const struct nx_action_output_reg *) ia; | |
3419 | xlate_output_reg_action(ctx, naor); | |
3420 | break; | |
75a75043 BP |
3421 | |
3422 | case OFPUTIL_NXAST_LEARN: | |
3423 | ctx->has_learn = true; | |
3424 | if (ctx->may_learn) { | |
3425 | xlate_learn_action(ctx, (const struct nx_action_learn *) ia); | |
3426 | } | |
3427 | break; | |
abe529af BP |
3428 | } |
3429 | } | |
3430 | } | |
3431 | ||
3432 | static void | |
3433 | action_xlate_ctx_init(struct action_xlate_ctx *ctx, | |
3434 | struct ofproto_dpif *ofproto, const struct flow *flow, | |
3435 | const struct ofpbuf *packet) | |
3436 | { | |
3437 | ctx->ofproto = ofproto; | |
3438 | ctx->flow = *flow; | |
3439 | ctx->packet = packet; | |
75a75043 | 3440 | ctx->may_learn = packet != NULL; |
abe529af | 3441 | ctx->resubmit_hook = NULL; |
abe529af BP |
3442 | } |
3443 | ||
3444 | static struct ofpbuf * | |
3445 | xlate_actions(struct action_xlate_ctx *ctx, | |
3446 | const union ofp_action *in, size_t n_in) | |
3447 | { | |
3448 | COVERAGE_INC(ofproto_dpif_xlate); | |
3449 | ||
3450 | ctx->odp_actions = ofpbuf_new(512); | |
3451 | ctx->tags = 0; | |
3452 | ctx->may_set_up_flow = true; | |
75a75043 BP |
3453 | ctx->has_learn = false; |
3454 | ctx->has_normal = false; | |
abe529af BP |
3455 | ctx->nf_output_iface = NF_OUT_DROP; |
3456 | ctx->recurse = 0; | |
afabef2b | 3457 | ctx->priority = 0; |
b3e9b2ed EJ |
3458 | ctx->base_priority = 0; |
3459 | ctx->base_flow = ctx->flow; | |
bf1e0371 | 3460 | ctx->base_flow.tun_id = 0; |
29901626 | 3461 | ctx->table_id = 0; |
abe529af | 3462 | |
fc08b7a2 | 3463 | if (process_special(ctx->ofproto, &ctx->flow, ctx->packet)) { |
abe529af BP |
3464 | ctx->may_set_up_flow = false; |
3465 | } else { | |
3466 | do_xlate_actions(in, n_in, ctx); | |
3467 | } | |
3468 | ||
abe529af BP |
3469 | /* Check with in-band control to see if we're allowed to set up this |
3470 | * flow. */ | |
3471 | if (!connmgr_may_set_up_flow(ctx->ofproto->up.connmgr, &ctx->flow, | |
3472 | ctx->odp_actions->data, | |
3473 | ctx->odp_actions->size)) { | |
3474 | ctx->may_set_up_flow = false; | |
3475 | } | |
3476 | ||
3477 | return ctx->odp_actions; | |
3478 | } | |
3479 | \f | |
3480 | /* OFPP_NORMAL implementation. */ | |
3481 | ||
3482 | struct dst { | |
3483 | struct ofport_dpif *port; | |
3484 | uint16_t vlan; | |
3485 | }; | |
3486 | ||
3487 | struct dst_set { | |
3488 | struct dst builtin[32]; | |
3489 | struct dst *dsts; | |
3490 | size_t n, allocated; | |
3491 | }; | |
3492 | ||
3493 | static void dst_set_init(struct dst_set *); | |
3494 | static void dst_set_add(struct dst_set *, const struct dst *); | |
3495 | static void dst_set_free(struct dst_set *); | |
3496 | ||
3497 | static struct ofport_dpif *ofbundle_get_a_port(const struct ofbundle *); | |
3498 | ||
3499 | static bool | |
3500 | set_dst(struct action_xlate_ctx *ctx, struct dst *dst, | |
3501 | const struct ofbundle *in_bundle, const struct ofbundle *out_bundle) | |
3502 | { | |
3503 | dst->vlan = (out_bundle->vlan >= 0 ? OFP_VLAN_NONE | |
3504 | : in_bundle->vlan >= 0 ? in_bundle->vlan | |
3505 | : ctx->flow.vlan_tci == 0 ? OFP_VLAN_NONE | |
3506 | : vlan_tci_to_vid(ctx->flow.vlan_tci)); | |
3507 | ||
3508 | dst->port = (!out_bundle->bond | |
3509 | ? ofbundle_get_a_port(out_bundle) | |
3510 | : bond_choose_output_slave(out_bundle->bond, &ctx->flow, | |
3511 | dst->vlan, &ctx->tags)); | |
3512 | ||
3513 | return dst->port != NULL; | |
3514 | } | |
3515 | ||
3516 | static int | |
3517 | mirror_mask_ffs(mirror_mask_t mask) | |
3518 | { | |
3519 | BUILD_ASSERT_DECL(sizeof(unsigned int) >= sizeof(mask)); | |
3520 | return ffs(mask); | |
3521 | } | |
3522 | ||
3523 | static void | |
3524 | dst_set_init(struct dst_set *set) | |
3525 | { | |
3526 | set->dsts = set->builtin; | |
3527 | set->n = 0; | |
3528 | set->allocated = ARRAY_SIZE(set->builtin); | |
3529 | } | |
3530 | ||
3531 | static void | |
3532 | dst_set_add(struct dst_set *set, const struct dst *dst) | |
3533 | { | |
3534 | if (set->n >= set->allocated) { | |
3535 | size_t new_allocated; | |
3536 | struct dst *new_dsts; | |
3537 | ||
3538 | new_allocated = set->allocated * 2; | |
3539 | new_dsts = xmalloc(new_allocated * sizeof *new_dsts); | |
3540 | memcpy(new_dsts, set->dsts, set->n * sizeof *new_dsts); | |
3541 | ||
3542 | dst_set_free(set); | |
3543 | ||
3544 | set->dsts = new_dsts; | |
3545 | set->allocated = new_allocated; | |
3546 | } | |
3547 | set->dsts[set->n++] = *dst; | |
3548 | } | |
3549 | ||
3550 | static void | |
3551 | dst_set_free(struct dst_set *set) | |
3552 | { | |
3553 | if (set->dsts != set->builtin) { | |
3554 | free(set->dsts); | |
3555 | } | |
3556 | } | |
3557 | ||
3558 | static bool | |
3559 | dst_is_duplicate(const struct dst_set *set, const struct dst *test) | |
3560 | { | |
3561 | size_t i; | |
3562 | for (i = 0; i < set->n; i++) { | |
3563 | if (set->dsts[i].vlan == test->vlan | |
3564 | && set->dsts[i].port == test->port) { | |
3565 | return true; | |
3566 | } | |
3567 | } | |
3568 | return false; | |
3569 | } | |
3570 | ||
3571 | static bool | |
3572 | ofbundle_trunks_vlan(const struct ofbundle *bundle, uint16_t vlan) | |
3573 | { | |
fc3d7408 BP |
3574 | return (bundle->vlan < 0 |
3575 | && (!bundle->trunks || bitmap_is_set(bundle->trunks, vlan))); | |
abe529af BP |
3576 | } |
3577 | ||
3578 | static bool | |
3579 | ofbundle_includes_vlan(const struct ofbundle *bundle, uint16_t vlan) | |
3580 | { | |
3581 | return vlan == bundle->vlan || ofbundle_trunks_vlan(bundle, vlan); | |
3582 | } | |
3583 | ||
3584 | /* Returns an arbitrary interface within 'bundle'. */ | |
3585 | static struct ofport_dpif * | |
3586 | ofbundle_get_a_port(const struct ofbundle *bundle) | |
3587 | { | |
3588 | return CONTAINER_OF(list_front(&bundle->ports), | |
3589 | struct ofport_dpif, bundle_node); | |
3590 | } | |
3591 | ||
3592 | static void | |
3593 | compose_dsts(struct action_xlate_ctx *ctx, uint16_t vlan, | |
3594 | const struct ofbundle *in_bundle, | |
3595 | const struct ofbundle *out_bundle, struct dst_set *set) | |
3596 | { | |
3597 | struct dst dst; | |
3598 | ||
3599 | if (out_bundle == OFBUNDLE_FLOOD) { | |
3600 | struct ofbundle *bundle; | |
3601 | ||
3602 | HMAP_FOR_EACH (bundle, hmap_node, &ctx->ofproto->bundles) { | |
3603 | if (bundle != in_bundle | |
3604 | && ofbundle_includes_vlan(bundle, vlan) | |
3605 | && bundle->floodable | |
3606 | && !bundle->mirror_out | |
3607 | && set_dst(ctx, &dst, in_bundle, bundle)) { | |
3608 | dst_set_add(set, &dst); | |
3609 | } | |
3610 | } | |
3611 | ctx->nf_output_iface = NF_OUT_FLOOD; | |
3612 | } else if (out_bundle && set_dst(ctx, &dst, in_bundle, out_bundle)) { | |
3613 | dst_set_add(set, &dst); | |
3614 | ctx->nf_output_iface = dst.port->odp_port; | |
3615 | } | |
3616 | } | |
3617 | ||
3618 | static bool | |
3619 | vlan_is_mirrored(const struct ofmirror *m, int vlan) | |
3620 | { | |
fc3d7408 | 3621 | return !m->vlans || bitmap_is_set(m->vlans, vlan); |
abe529af BP |
3622 | } |
3623 | ||
07817dfe BP |
3624 | /* Returns true if a packet with Ethernet destination MAC 'dst' may be mirrored |
3625 | * to a VLAN. In general most packets may be mirrored but we want to drop | |
3626 | * protocols that may confuse switches. */ | |
3627 | static bool | |
3628 | eth_dst_may_rspan(const uint8_t dst[ETH_ADDR_LEN]) | |
3629 | { | |
3630 | /* If you change this function's behavior, please update corresponding | |
3631 | * documentation in vswitch.xml at the same time. */ | |
3632 | if (dst[0] != 0x01) { | |
3633 | /* All the currently banned MACs happen to start with 01 currently, so | |
3634 | * this is a quick way to eliminate most of the good ones. */ | |
3635 | } else { | |
3636 | if (eth_addr_is_reserved(dst)) { | |
3637 | /* Drop STP, IEEE pause frames, and other reserved protocols | |
3638 | * (01-80-c2-00-00-0x). */ | |
3639 | return false; | |
3640 | } | |
3641 | ||
3642 | if (dst[0] == 0x01 && dst[1] == 0x00 && dst[2] == 0x0c) { | |
3643 | /* Cisco OUI. */ | |
3644 | if ((dst[3] & 0xfe) == 0xcc && | |
3645 | (dst[4] & 0xfe) == 0xcc && | |
3646 | (dst[5] & 0xfe) == 0xcc) { | |
3647 | /* Drop the following protocols plus others following the same | |
3648 | pattern: | |
3649 | ||
3650 | CDP, VTP, DTP, PAgP (01-00-0c-cc-cc-cc) | |
3651 | Spanning Tree PVSTP+ (01-00-0c-cc-cc-cd) | |
3652 | STP Uplink Fast (01-00-0c-cd-cd-cd) */ | |
3653 | return false; | |
3654 | } | |
3655 | ||
3656 | if (!(dst[3] | dst[4] | dst[5])) { | |
3657 | /* Drop Inter Switch Link packets (01-00-0c-00-00-00). */ | |
3658 | return false; | |
3659 | } | |
3660 | } | |
3661 | } | |
3662 | return true; | |
3663 | } | |
3664 | ||
abe529af BP |
3665 | static void |
3666 | compose_mirror_dsts(struct action_xlate_ctx *ctx, | |
3667 | uint16_t vlan, const struct ofbundle *in_bundle, | |
3668 | struct dst_set *set) | |
3669 | { | |
3670 | struct ofproto_dpif *ofproto = ctx->ofproto; | |
3671 | mirror_mask_t mirrors; | |
3672 | int flow_vlan; | |
3673 | size_t i; | |
3674 | ||
3675 | mirrors = in_bundle->src_mirrors; | |
3676 | for (i = 0; i < set->n; i++) { | |
3677 | mirrors |= set->dsts[i].port->bundle->dst_mirrors; | |
3678 | } | |
3679 | ||
3680 | if (!mirrors) { | |
3681 | return; | |
3682 | } | |
3683 | ||
3684 | flow_vlan = vlan_tci_to_vid(ctx->flow.vlan_tci); | |
3685 | if (flow_vlan == 0) { | |
3686 | flow_vlan = OFP_VLAN_NONE; | |
3687 | } | |
3688 | ||
3689 | while (mirrors) { | |
3690 | struct ofmirror *m = ofproto->mirrors[mirror_mask_ffs(mirrors) - 1]; | |
3691 | if (vlan_is_mirrored(m, vlan)) { | |
3692 | struct dst dst; | |
3693 | ||
3694 | if (m->out) { | |
3695 | if (set_dst(ctx, &dst, in_bundle, m->out) | |
3696 | && !dst_is_duplicate(set, &dst)) { | |
3697 | dst_set_add(set, &dst); | |
3698 | } | |
07817dfe | 3699 | } else if (eth_dst_may_rspan(ctx->flow.dl_dst)) { |
abe529af BP |
3700 | struct ofbundle *bundle; |
3701 | ||
3702 | HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) { | |
3703 | if (ofbundle_includes_vlan(bundle, m->out_vlan) | |
3704 | && set_dst(ctx, &dst, in_bundle, bundle)) | |
3705 | { | |
3706 | if (bundle->vlan < 0) { | |
3707 | dst.vlan = m->out_vlan; | |
3708 | } | |
3709 | if (dst_is_duplicate(set, &dst)) { | |
3710 | continue; | |
3711 | } | |
3712 | ||
3713 | /* Use the vlan tag on the original flow instead of | |
3714 | * the one passed in the vlan parameter. This ensures | |
3715 | * that we compare the vlan from before any implicit | |
3716 | * tagging tags place. This is necessary because | |
3717 | * dst->vlan is the final vlan, after removing implicit | |
3718 | * tags. */ | |
3719 | if (bundle == in_bundle && dst.vlan == flow_vlan) { | |
3720 | /* Don't send out input port on same VLAN. */ | |
3721 | continue; | |
3722 | } | |
3723 | dst_set_add(set, &dst); | |
3724 | } | |
3725 | } | |
3726 | } | |
3727 | } | |
3728 | mirrors &= mirrors - 1; | |
3729 | } | |
3730 | } | |
3731 | ||
3732 | static void | |
3733 | compose_actions(struct action_xlate_ctx *ctx, uint16_t vlan, | |
3734 | const struct ofbundle *in_bundle, | |
3735 | const struct ofbundle *out_bundle) | |
3736 | { | |
3737 | uint16_t initial_vlan, cur_vlan; | |
3738 | const struct dst *dst; | |
3739 | struct dst_set set; | |
3740 | ||
3741 | dst_set_init(&set); | |
3742 | compose_dsts(ctx, vlan, in_bundle, out_bundle, &set); | |
3743 | compose_mirror_dsts(ctx, vlan, in_bundle, &set); | |
3744 | ||
3745 | /* Output all the packets we can without having to change the VLAN. */ | |
3746 | initial_vlan = vlan_tci_to_vid(ctx->flow.vlan_tci); | |
3747 | if (initial_vlan == 0) { | |
3748 | initial_vlan = OFP_VLAN_NONE; | |
3749 | } | |
3750 | for (dst = set.dsts; dst < &set.dsts[set.n]; dst++) { | |
3751 | if (dst->vlan != initial_vlan) { | |
3752 | continue; | |
3753 | } | |
3754 | nl_msg_put_u32(ctx->odp_actions, | |
df2c07f4 | 3755 | OVS_ACTION_ATTR_OUTPUT, dst->port->odp_port); |
abe529af BP |
3756 | } |
3757 | ||
3758 | /* Then output the rest. */ | |
3759 | cur_vlan = initial_vlan; | |
3760 | for (dst = set.dsts; dst < &set.dsts[set.n]; dst++) { | |
3761 | if (dst->vlan == initial_vlan) { | |
3762 | continue; | |
3763 | } | |
3764 | if (dst->vlan != cur_vlan) { | |
3765 | if (dst->vlan == OFP_VLAN_NONE) { | |
d9065a90 | 3766 | nl_msg_put_flag(ctx->odp_actions, OVS_ACTION_ATTR_POP_VLAN); |
abe529af BP |
3767 | } else { |
3768 | ovs_be16 tci; | |
d9065a90 PS |
3769 | |
3770 | if (cur_vlan != OFP_VLAN_NONE) { | |
3771 | nl_msg_put_flag(ctx->odp_actions, OVS_ACTION_ATTR_POP_VLAN); | |
3772 | } | |
abe529af BP |
3773 | tci = htons(dst->vlan & VLAN_VID_MASK); |
3774 | tci |= ctx->flow.vlan_tci & htons(VLAN_PCP_MASK); | |
3775 | nl_msg_put_be16(ctx->odp_actions, | |
d9065a90 | 3776 | OVS_ACTION_ATTR_PUSH_VLAN, tci); |
abe529af BP |
3777 | } |
3778 | cur_vlan = dst->vlan; | |
3779 | } | |
3780 | nl_msg_put_u32(ctx->odp_actions, | |
df2c07f4 | 3781 | OVS_ACTION_ATTR_OUTPUT, dst->port->odp_port); |
abe529af BP |
3782 | } |
3783 | ||
3784 | dst_set_free(&set); | |
3785 | } | |
3786 | ||
3787 | /* Returns the effective vlan of a packet, taking into account both the | |
3788 | * 802.1Q header and implicitly tagged ports. A value of 0 indicates that | |
3789 | * the packet is untagged and -1 indicates it has an invalid header and | |
3790 | * should be dropped. */ | |
3791 | static int | |
3792 | flow_get_vlan(struct ofproto_dpif *ofproto, const struct flow *flow, | |
3793 | struct ofbundle *in_bundle, bool have_packet) | |
3794 | { | |
3795 | int vlan = vlan_tci_to_vid(flow->vlan_tci); | |
3796 | if (in_bundle->vlan >= 0) { | |
3797 | if (vlan) { | |
3798 | if (have_packet) { | |
3799 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
3800 | VLOG_WARN_RL(&rl, "bridge %s: dropping VLAN %d tagged " | |
3801 | "packet received on port %s configured with " | |
3802 | "implicit VLAN %"PRIu16, | |
3803 | ofproto->up.name, vlan, | |
3804 | in_bundle->name, in_bundle->vlan); | |
3805 | } | |
3806 | return -1; | |
3807 | } | |
3808 | vlan = in_bundle->vlan; | |
3809 | } else { | |
3810 | if (!ofbundle_includes_vlan(in_bundle, vlan)) { | |
3811 | if (have_packet) { | |
3812 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
3813 | VLOG_WARN_RL(&rl, "bridge %s: dropping VLAN %d tagged " | |
3814 | "packet received on port %s not configured for " | |
3815 | "trunking VLAN %d", | |
3816 | ofproto->up.name, vlan, in_bundle->name, vlan); | |
3817 | } | |
3818 | return -1; | |
3819 | } | |
3820 | } | |
3821 | ||
3822 | return vlan; | |
3823 | } | |
3824 | ||
3825 | /* A VM broadcasts a gratuitous ARP to indicate that it has resumed after | |
3826 | * migration. Older Citrix-patched Linux DomU used gratuitous ARP replies to | |
3827 | * indicate this; newer upstream kernels use gratuitous ARP requests. */ | |
3828 | static bool | |
3829 | is_gratuitous_arp(const struct flow *flow) | |
3830 | { | |
3831 | return (flow->dl_type == htons(ETH_TYPE_ARP) | |
3832 | && eth_addr_is_broadcast(flow->dl_dst) | |
3833 | && (flow->nw_proto == ARP_OP_REPLY | |
3834 | || (flow->nw_proto == ARP_OP_REQUEST | |
3835 | && flow->nw_src == flow->nw_dst))); | |
3836 | } | |
3837 | ||
3838 | static void | |
3839 | update_learning_table(struct ofproto_dpif *ofproto, | |
3840 | const struct flow *flow, int vlan, | |
3841 | struct ofbundle *in_bundle) | |
3842 | { | |
3843 | struct mac_entry *mac; | |
3844 | ||
3845 | if (!mac_learning_may_learn(ofproto->ml, flow->dl_src, vlan)) { | |
3846 | return; | |
3847 | } | |
3848 | ||
3849 | mac = mac_learning_insert(ofproto->ml, flow->dl_src, vlan); | |
3850 | if (is_gratuitous_arp(flow)) { | |
3851 | /* We don't want to learn from gratuitous ARP packets that are | |
3852 | * reflected back over bond slaves so we lock the learning table. */ | |
3853 | if (!in_bundle->bond) { | |
3854 | mac_entry_set_grat_arp_lock(mac); | |
3855 | } else if (mac_entry_is_grat_arp_locked(mac)) { | |
3856 | return; | |
3857 | } | |
3858 | } | |
3859 | ||
3860 | if (mac_entry_is_new(mac) || mac->port.p != in_bundle) { | |
3861 | /* The log messages here could actually be useful in debugging, | |
3862 | * so keep the rate limit relatively high. */ | |
3863 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(30, 300); | |
3864 | VLOG_DBG_RL(&rl, "bridge %s: learned that "ETH_ADDR_FMT" is " | |
3865 | "on port %s in VLAN %d", | |
3866 | ofproto->up.name, ETH_ADDR_ARGS(flow->dl_src), | |
3867 | in_bundle->name, vlan); | |
3868 | ||
3869 | mac->port.p = in_bundle; | |
3870 | tag_set_add(&ofproto->revalidate_set, | |
3871 | mac_learning_changed(ofproto->ml, mac)); | |
3872 | } | |
3873 | } | |
3874 | ||
3875 | /* Determines whether packets in 'flow' within 'br' should be forwarded or | |
3876 | * dropped. Returns true if they may be forwarded, false if they should be | |
3877 | * dropped. | |
3878 | * | |
3879 | * If 'have_packet' is true, it indicates that the caller is processing a | |
3880 | * received packet. If 'have_packet' is false, then the caller is just | |
3881 | * revalidating an existing flow because configuration has changed. Either | |
3882 | * way, 'have_packet' only affects logging (there is no point in logging errors | |
3883 | * during revalidation). | |
3884 | * | |
3885 | * Sets '*in_portp' to the input port. This will be a null pointer if | |
3886 | * flow->in_port does not designate a known input port (in which case | |
3887 | * is_admissible() returns false). | |
3888 | * | |
3889 | * When returning true, sets '*vlanp' to the effective VLAN of the input | |
3890 | * packet, as returned by flow_get_vlan(). | |
3891 | * | |
3892 | * May also add tags to '*tags', although the current implementation only does | |
3893 | * so in one special case. | |
3894 | */ | |
3895 | static bool | |
3896 | is_admissible(struct ofproto_dpif *ofproto, const struct flow *flow, | |
3897 | bool have_packet, | |
3898 | tag_type *tags, int *vlanp, struct ofbundle **in_bundlep) | |
3899 | { | |
3900 | struct ofport_dpif *in_port; | |
3901 | struct ofbundle *in_bundle; | |
3902 | int vlan; | |
3903 | ||
3904 | /* Find the port and bundle for the received packet. */ | |
3905 | in_port = get_ofp_port(ofproto, flow->in_port); | |
23adee42 | 3906 | *in_bundlep = in_bundle = in_port ? in_port->bundle : NULL; |
abe529af BP |
3907 | if (!in_port || !in_bundle) { |
3908 | /* No interface? Something fishy... */ | |
3909 | if (have_packet) { | |
3910 | /* Odd. A few possible reasons here: | |
3911 | * | |
3912 | * - We deleted a port but there are still a few packets queued up | |
3913 | * from it. | |
3914 | * | |
3915 | * - Someone externally added a port (e.g. "ovs-dpctl add-if") that | |
3916 | * we don't know about. | |
3917 | * | |
3918 | * - Packet arrived on the local port but the local port is not | |
3919 | * part of a bundle. | |
3920 | */ | |
3921 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
3922 | ||
3923 | VLOG_WARN_RL(&rl, "bridge %s: received packet on unknown " | |
3924 | "port %"PRIu16, | |
3925 | ofproto->up.name, flow->in_port); | |
3926 | } | |
75a75043 | 3927 | *vlanp = -1; |
abe529af BP |
3928 | return false; |
3929 | } | |
3930 | *vlanp = vlan = flow_get_vlan(ofproto, flow, in_bundle, have_packet); | |
3931 | if (vlan < 0) { | |
3932 | return false; | |
3933 | } | |
3934 | ||
b53055f4 | 3935 | /* Drop frames for reserved multicast addresses |
8402c74b | 3936 | * only if forward_bpdu option is absent. */ |
b53055f4 | 3937 | if (eth_addr_is_reserved(flow->dl_dst) && |
8402c74b | 3938 | !ofproto->up.forward_bpdu) { |
abe529af BP |
3939 | return false; |
3940 | } | |
3941 | ||
3942 | /* Drop frames on bundles reserved for mirroring. */ | |
3943 | if (in_bundle->mirror_out) { | |
3944 | if (have_packet) { | |
3945 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
3946 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet received on port " | |
3947 | "%s, which is reserved exclusively for mirroring", | |
3948 | ofproto->up.name, in_bundle->name); | |
3949 | } | |
3950 | return false; | |
3951 | } | |
3952 | ||
3953 | if (in_bundle->bond) { | |
3954 | struct mac_entry *mac; | |
3955 | ||
3956 | switch (bond_check_admissibility(in_bundle->bond, in_port, | |
3957 | flow->dl_dst, tags)) { | |
3958 | case BV_ACCEPT: | |
3959 | break; | |
3960 | ||
3961 | case BV_DROP: | |
3962 | return false; | |
3963 | ||
3964 | case BV_DROP_IF_MOVED: | |
3965 | mac = mac_learning_lookup(ofproto->ml, flow->dl_src, vlan, NULL); | |
3966 | if (mac && mac->port.p != in_bundle && | |
3967 | (!is_gratuitous_arp(flow) | |
3968 | || mac_entry_is_grat_arp_locked(mac))) { | |
3969 | return false; | |
3970 | } | |
3971 | break; | |
3972 | } | |
3973 | } | |
3974 | ||
3975 | return true; | |
3976 | } | |
3977 | ||
4cd78906 | 3978 | static void |
abe529af BP |
3979 | xlate_normal(struct action_xlate_ctx *ctx) |
3980 | { | |
3981 | struct ofbundle *in_bundle; | |
3982 | struct ofbundle *out_bundle; | |
3983 | struct mac_entry *mac; | |
3984 | int vlan; | |
3985 | ||
75a75043 BP |
3986 | ctx->has_normal = true; |
3987 | ||
abe529af BP |
3988 | /* Check whether we should drop packets in this flow. */ |
3989 | if (!is_admissible(ctx->ofproto, &ctx->flow, ctx->packet != NULL, | |
3990 | &ctx->tags, &vlan, &in_bundle)) { | |
3991 | out_bundle = NULL; | |
3992 | goto done; | |
3993 | } | |
3994 | ||
75a75043 BP |
3995 | /* Learn source MAC. */ |
3996 | if (ctx->may_learn) { | |
abe529af BP |
3997 | update_learning_table(ctx->ofproto, &ctx->flow, vlan, in_bundle); |
3998 | } | |
3999 | ||
4000 | /* Determine output bundle. */ | |
4001 | mac = mac_learning_lookup(ctx->ofproto->ml, ctx->flow.dl_dst, vlan, | |
4002 | &ctx->tags); | |
4003 | if (mac) { | |
4004 | out_bundle = mac->port.p; | |
4005 | } else if (!ctx->packet && !eth_addr_is_multicast(ctx->flow.dl_dst)) { | |
4006 | /* If we are revalidating but don't have a learning entry then eject | |
4007 | * the flow. Installing a flow that floods packets opens up a window | |
4008 | * of time where we could learn from a packet reflected on a bond and | |
4009 | * blackhole packets before the learning table is updated to reflect | |
4010 | * the correct port. */ | |
4cd78906 BP |
4011 | ctx->may_set_up_flow = false; |
4012 | return; | |
abe529af BP |
4013 | } else { |
4014 | out_bundle = OFBUNDLE_FLOOD; | |
4015 | } | |
4016 | ||
4017 | /* Don't send packets out their input bundles. */ | |
4018 | if (in_bundle == out_bundle) { | |
4019 | out_bundle = NULL; | |
4020 | } | |
4021 | ||
4022 | done: | |
4023 | if (in_bundle) { | |
4024 | compose_actions(ctx, vlan, in_bundle, out_bundle); | |
4025 | } | |
abe529af BP |
4026 | } |
4027 | \f | |
54a9cbc9 BP |
4028 | /* Optimized flow revalidation. |
4029 | * | |
4030 | * It's a difficult problem, in general, to tell which facets need to have | |
4031 | * their actions recalculated whenever the OpenFlow flow table changes. We | |
4032 | * don't try to solve that general problem: for most kinds of OpenFlow flow | |
4033 | * table changes, we recalculate the actions for every facet. This is | |
4034 | * relatively expensive, but it's good enough if the OpenFlow flow table | |
4035 | * doesn't change very often. | |
4036 | * | |
4037 | * However, we can expect one particular kind of OpenFlow flow table change to | |
4038 | * happen frequently: changes caused by MAC learning. To avoid wasting a lot | |
4039 | * of CPU on revalidating every facet whenever MAC learning modifies the flow | |
4040 | * table, we add a special case that applies to flow tables in which every rule | |
4041 | * has the same form (that is, the same wildcards), except that the table is | |
4042 | * also allowed to have a single "catch-all" flow that matches all packets. We | |
4043 | * optimize this case by tagging all of the facets that resubmit into the table | |
4044 | * and invalidating the same tag whenever a flow changes in that table. The | |
4045 | * end result is that we revalidate just the facets that need it (and sometimes | |
4046 | * a few more, but not all of the facets or even all of the facets that | |
4047 | * resubmit to the table modified by MAC learning). */ | |
4048 | ||
4049 | /* Calculates the tag to use for 'flow' and wildcards 'wc' when it is inserted | |
4050 | * into an OpenFlow table with the given 'basis'. */ | |
4051 | static uint32_t | |
4052 | rule_calculate_tag(const struct flow *flow, const struct flow_wildcards *wc, | |
4053 | uint32_t secret) | |
4054 | { | |
4055 | if (flow_wildcards_is_catchall(wc)) { | |
4056 | return 0; | |
4057 | } else { | |
4058 | struct flow tag_flow = *flow; | |
4059 | flow_zero_wildcards(&tag_flow, wc); | |
4060 | return tag_create_deterministic(flow_hash(&tag_flow, secret)); | |
4061 | } | |
4062 | } | |
4063 | ||
4064 | /* Following a change to OpenFlow table 'table_id' in 'ofproto', update the | |
4065 | * taggability of that table. | |
4066 | * | |
4067 | * This function must be called after *each* change to a flow table. If you | |
4068 | * skip calling it on some changes then the pointer comparisons at the end can | |
4069 | * be invalid if you get unlucky. For example, if a flow removal causes a | |
4070 | * cls_table to be destroyed and then a flow insertion causes a cls_table with | |
4071 | * different wildcards to be created with the same address, then this function | |
4072 | * will incorrectly skip revalidation. */ | |
4073 | static void | |
4074 | table_update_taggable(struct ofproto_dpif *ofproto, uint8_t table_id) | |
4075 | { | |
4076 | struct table_dpif *table = &ofproto->tables[table_id]; | |
4077 | const struct classifier *cls = &ofproto->up.tables[table_id]; | |
4078 | struct cls_table *catchall, *other; | |
4079 | struct cls_table *t; | |
4080 | ||
4081 | catchall = other = NULL; | |
4082 | ||
4083 | switch (hmap_count(&cls->tables)) { | |
4084 | case 0: | |
4085 | /* We could tag this OpenFlow table but it would make the logic a | |
4086 | * little harder and it's a corner case that doesn't seem worth it | |
4087 | * yet. */ | |
4088 | break; | |
4089 | ||
4090 | case 1: | |
4091 | case 2: | |
4092 | HMAP_FOR_EACH (t, hmap_node, &cls->tables) { | |
4093 | if (cls_table_is_catchall(t)) { | |
4094 | catchall = t; | |
4095 | } else if (!other) { | |
4096 | other = t; | |
4097 | } else { | |
4098 | /* Indicate that we can't tag this by setting both tables to | |
4099 | * NULL. (We know that 'catchall' is already NULL.) */ | |
4100 | other = NULL; | |
4101 | } | |
4102 | } | |
4103 | break; | |
4104 | ||
4105 | default: | |
4106 | /* Can't tag this table. */ | |
4107 | break; | |
4108 | } | |
4109 | ||
4110 | if (table->catchall_table != catchall || table->other_table != other) { | |
4111 | table->catchall_table = catchall; | |
4112 | table->other_table = other; | |
4113 | ofproto->need_revalidate = true; | |
4114 | } | |
4115 | } | |
4116 | ||
4117 | /* Given 'rule' that has changed in some way (either it is a rule being | |
4118 | * inserted, a rule being deleted, or a rule whose actions are being | |
4119 | * modified), marks facets for revalidation to ensure that packets will be | |
4120 | * forwarded correctly according to the new state of the flow table. | |
4121 | * | |
4122 | * This function must be called after *each* change to a flow table. See | |
4123 | * the comment on table_update_taggable() for more information. */ | |
4124 | static void | |
4125 | rule_invalidate(const struct rule_dpif *rule) | |
4126 | { | |
4127 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto); | |
4128 | ||
4129 | table_update_taggable(ofproto, rule->up.table_id); | |
4130 | ||
4131 | if (!ofproto->need_revalidate) { | |
4132 | struct table_dpif *table = &ofproto->tables[rule->up.table_id]; | |
4133 | ||
4134 | if (table->other_table && rule->tag) { | |
4135 | tag_set_add(&ofproto->revalidate_set, rule->tag); | |
4136 | } else { | |
4137 | ofproto->need_revalidate = true; | |
4138 | } | |
4139 | } | |
4140 | } | |
4141 | \f | |
abe529af BP |
4142 | static bool |
4143 | get_drop_frags(struct ofproto *ofproto_) | |
4144 | { | |
4145 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
4146 | bool drop_frags; | |
4147 | ||
4148 | dpif_get_drop_frags(ofproto->dpif, &drop_frags); | |
4149 | return drop_frags; | |
4150 | } | |
4151 | ||
4152 | static void | |
4153 | set_drop_frags(struct ofproto *ofproto_, bool drop_frags) | |
4154 | { | |
4155 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
4156 | ||
4157 | dpif_set_drop_frags(ofproto->dpif, drop_frags); | |
4158 | } | |
4159 | ||
4160 | static int | |
4161 | packet_out(struct ofproto *ofproto_, struct ofpbuf *packet, | |
4162 | const struct flow *flow, | |
4163 | const union ofp_action *ofp_actions, size_t n_ofp_actions) | |
4164 | { | |
4165 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
4166 | int error; | |
4167 | ||
4168 | error = validate_actions(ofp_actions, n_ofp_actions, flow, | |
4169 | ofproto->max_ports); | |
4170 | if (!error) { | |
80e5eed9 | 4171 | struct odputil_keybuf keybuf; |
abe529af BP |
4172 | struct action_xlate_ctx ctx; |
4173 | struct ofpbuf *odp_actions; | |
80e5eed9 BP |
4174 | struct ofpbuf key; |
4175 | ||
4176 | ofpbuf_use_stack(&key, &keybuf, sizeof keybuf); | |
4177 | odp_flow_key_from_flow(&key, flow); | |
abe529af BP |
4178 | |
4179 | action_xlate_ctx_init(&ctx, ofproto, flow, packet); | |
4180 | odp_actions = xlate_actions(&ctx, ofp_actions, n_ofp_actions); | |
80e5eed9 BP |
4181 | dpif_execute(ofproto->dpif, key.data, key.size, |
4182 | odp_actions->data, odp_actions->size, packet); | |
abe529af BP |
4183 | ofpbuf_delete(odp_actions); |
4184 | } | |
4185 | return error; | |
4186 | } | |
4187 | ||
4188 | static void | |
4189 | get_netflow_ids(const struct ofproto *ofproto_, | |
4190 | uint8_t *engine_type, uint8_t *engine_id) | |
4191 | { | |
4192 | struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); | |
4193 | ||
4194 | dpif_get_netflow_ids(ofproto->dpif, engine_type, engine_id); | |
4195 | } | |
4196 | \f | |
4197 | static struct ofproto_dpif * | |
4198 | ofproto_dpif_lookup(const char *name) | |
4199 | { | |
4200 | struct ofproto *ofproto = ofproto_lookup(name); | |
4201 | return (ofproto && ofproto->ofproto_class == &ofproto_dpif_class | |
4202 | ? ofproto_dpif_cast(ofproto) | |
4203 | : NULL); | |
4204 | } | |
4205 | ||
4206 | static void | |
4207 | ofproto_unixctl_fdb_show(struct unixctl_conn *conn, | |
4208 | const char *args, void *aux OVS_UNUSED) | |
4209 | { | |
4210 | struct ds ds = DS_EMPTY_INITIALIZER; | |
4211 | const struct ofproto_dpif *ofproto; | |
4212 | const struct mac_entry *e; | |
4213 | ||
4214 | ofproto = ofproto_dpif_lookup(args); | |
4215 | if (!ofproto) { | |
4216 | unixctl_command_reply(conn, 501, "no such bridge"); | |
4217 | return; | |
4218 | } | |
4219 | ||
4220 | ds_put_cstr(&ds, " port VLAN MAC Age\n"); | |
4221 | LIST_FOR_EACH (e, lru_node, &ofproto->ml->lrus) { | |
4222 | struct ofbundle *bundle = e->port.p; | |
4223 | ds_put_format(&ds, "%5d %4d "ETH_ADDR_FMT" %3d\n", | |
4224 | ofbundle_get_a_port(bundle)->odp_port, | |
4225 | e->vlan, ETH_ADDR_ARGS(e->mac), mac_entry_age(e)); | |
4226 | } | |
4227 | unixctl_command_reply(conn, 200, ds_cstr(&ds)); | |
4228 | ds_destroy(&ds); | |
4229 | } | |
4230 | ||
4231 | struct ofproto_trace { | |
4232 | struct action_xlate_ctx ctx; | |
4233 | struct flow flow; | |
4234 | struct ds *result; | |
4235 | }; | |
4236 | ||
4237 | static void | |
29901626 BP |
4238 | trace_format_rule(struct ds *result, uint8_t table_id, int level, |
4239 | const struct rule_dpif *rule) | |
abe529af BP |
4240 | { |
4241 | ds_put_char_multiple(result, '\t', level); | |
4242 | if (!rule) { | |
4243 | ds_put_cstr(result, "No match\n"); | |
4244 | return; | |
4245 | } | |
4246 | ||
29901626 BP |
4247 | ds_put_format(result, "Rule: table=%"PRIu8" cookie=%#"PRIx64" ", |
4248 | table_id, ntohll(rule->up.flow_cookie)); | |
79feb7df | 4249 | cls_rule_format(&rule->up.cr, result); |
abe529af BP |
4250 | ds_put_char(result, '\n'); |
4251 | ||
4252 | ds_put_char_multiple(result, '\t', level); | |
4253 | ds_put_cstr(result, "OpenFlow "); | |
79feb7df | 4254 | ofp_print_actions(result, rule->up.actions, rule->up.n_actions); |
abe529af BP |
4255 | ds_put_char(result, '\n'); |
4256 | } | |
4257 | ||
4258 | static void | |
4259 | trace_format_flow(struct ds *result, int level, const char *title, | |
4260 | struct ofproto_trace *trace) | |
4261 | { | |
4262 | ds_put_char_multiple(result, '\t', level); | |
4263 | ds_put_format(result, "%s: ", title); | |
4264 | if (flow_equal(&trace->ctx.flow, &trace->flow)) { | |
4265 | ds_put_cstr(result, "unchanged"); | |
4266 | } else { | |
4267 | flow_format(result, &trace->ctx.flow); | |
4268 | trace->flow = trace->ctx.flow; | |
4269 | } | |
4270 | ds_put_char(result, '\n'); | |
4271 | } | |
4272 | ||
eb9e1c26 EJ |
4273 | static void |
4274 | trace_format_regs(struct ds *result, int level, const char *title, | |
4275 | struct ofproto_trace *trace) | |
4276 | { | |
4277 | size_t i; | |
4278 | ||
4279 | ds_put_char_multiple(result, '\t', level); | |
4280 | ds_put_format(result, "%s:", title); | |
4281 | for (i = 0; i < FLOW_N_REGS; i++) { | |
4282 | ds_put_format(result, " reg%zu=0x%"PRIx32, i, trace->flow.regs[i]); | |
4283 | } | |
4284 | ds_put_char(result, '\n'); | |
4285 | } | |
4286 | ||
abe529af BP |
4287 | static void |
4288 | trace_resubmit(struct action_xlate_ctx *ctx, struct rule_dpif *rule) | |
4289 | { | |
4290 | struct ofproto_trace *trace = CONTAINER_OF(ctx, struct ofproto_trace, ctx); | |
4291 | struct ds *result = trace->result; | |
4292 | ||
4293 | ds_put_char(result, '\n'); | |
4294 | trace_format_flow(result, ctx->recurse + 1, "Resubmitted flow", trace); | |
eb9e1c26 | 4295 | trace_format_regs(result, ctx->recurse + 1, "Resubmitted regs", trace); |
29901626 | 4296 | trace_format_rule(result, ctx->table_id, ctx->recurse + 1, rule); |
abe529af BP |
4297 | } |
4298 | ||
4299 | static void | |
4300 | ofproto_unixctl_trace(struct unixctl_conn *conn, const char *args_, | |
4301 | void *aux OVS_UNUSED) | |
4302 | { | |
876b0e1c | 4303 | char *dpname, *arg1, *arg2, *arg3; |
abe529af BP |
4304 | char *args = xstrdup(args_); |
4305 | char *save_ptr = NULL; | |
4306 | struct ofproto_dpif *ofproto; | |
876b0e1c BP |
4307 | struct ofpbuf odp_key; |
4308 | struct ofpbuf *packet; | |
abe529af BP |
4309 | struct rule_dpif *rule; |
4310 | struct ds result; | |
4311 | struct flow flow; | |
abe529af BP |
4312 | char *s; |
4313 | ||
876b0e1c BP |
4314 | packet = NULL; |
4315 | ofpbuf_init(&odp_key, 0); | |
abe529af BP |
4316 | ds_init(&result); |
4317 | ||
4318 | dpname = strtok_r(args, " ", &save_ptr); | |
876b0e1c BP |
4319 | arg1 = strtok_r(NULL, " ", &save_ptr); |
4320 | arg2 = strtok_r(NULL, " ", &save_ptr); | |
4321 | arg3 = strtok_r(NULL, "", &save_ptr); /* Get entire rest of line. */ | |
8b3b8dd1 BP |
4322 | if (dpname && arg1 && (!arg2 || !strcmp(arg2, "-generate")) && !arg3) { |
4323 | /* ofproto/trace dpname flow [-generate] */ | |
876b0e1c BP |
4324 | int error; |
4325 | ||
df2c07f4 | 4326 | /* Convert string to datapath key. */ |
876b0e1c BP |
4327 | ofpbuf_init(&odp_key, 0); |
4328 | error = odp_flow_key_from_string(arg1, &odp_key); | |
4329 | if (error) { | |
4330 | unixctl_command_reply(conn, 501, "Bad flow syntax"); | |
4331 | goto exit; | |
4332 | } | |
4333 | ||
4334 | /* Convert odp_key to flow. */ | |
4335 | error = odp_flow_key_to_flow(odp_key.data, odp_key.size, &flow); | |
4336 | if (error) { | |
4337 | unixctl_command_reply(conn, 501, "Invalid flow"); | |
4338 | goto exit; | |
4339 | } | |
8b3b8dd1 BP |
4340 | |
4341 | /* Generate a packet, if requested. */ | |
4342 | if (arg2) { | |
4343 | packet = ofpbuf_new(0); | |
4344 | flow_compose(packet, &flow); | |
4345 | } | |
876b0e1c BP |
4346 | } else if (dpname && arg1 && arg2 && arg3) { |
4347 | /* ofproto/trace dpname tun_id in_port packet */ | |
4348 | uint16_t in_port; | |
4349 | ovs_be64 tun_id; | |
4350 | ||
4351 | tun_id = htonll(strtoull(arg1, NULL, 0)); | |
4352 | in_port = ofp_port_to_odp_port(atoi(arg2)); | |
4353 | ||
4354 | packet = ofpbuf_new(strlen(args) / 2); | |
4355 | arg3 = ofpbuf_put_hex(packet, arg3, NULL); | |
4356 | arg3 += strspn(arg3, " "); | |
4357 | if (*arg3 != '\0') { | |
4358 | unixctl_command_reply(conn, 501, "Trailing garbage in command"); | |
4359 | goto exit; | |
4360 | } | |
4361 | if (packet->size < ETH_HEADER_LEN) { | |
4362 | unixctl_command_reply(conn, 501, | |
4363 | "Packet data too short for Ethernet"); | |
4364 | goto exit; | |
4365 | } | |
4366 | ||
4367 | ds_put_cstr(&result, "Packet: "); | |
4368 | s = ofp_packet_to_string(packet->data, packet->size, packet->size); | |
4369 | ds_put_cstr(&result, s); | |
4370 | free(s); | |
4371 | ||
4372 | flow_extract(packet, tun_id, in_port, &flow); | |
4373 | } else { | |
abe529af BP |
4374 | unixctl_command_reply(conn, 501, "Bad command syntax"); |
4375 | goto exit; | |
4376 | } | |
4377 | ||
4378 | ofproto = ofproto_dpif_lookup(dpname); | |
4379 | if (!ofproto) { | |
4380 | unixctl_command_reply(conn, 501, "Unknown ofproto (use ofproto/list " | |
4381 | "for help)"); | |
4382 | goto exit; | |
4383 | } | |
4384 | ||
abe529af BP |
4385 | ds_put_cstr(&result, "Flow: "); |
4386 | flow_format(&result, &flow); | |
4387 | ds_put_char(&result, '\n'); | |
4388 | ||
29901626 BP |
4389 | rule = rule_dpif_lookup(ofproto, &flow, 0); |
4390 | trace_format_rule(&result, 0, 0, rule); | |
abe529af BP |
4391 | if (rule) { |
4392 | struct ofproto_trace trace; | |
4393 | struct ofpbuf *odp_actions; | |
4394 | ||
4395 | trace.result = &result; | |
4396 | trace.flow = flow; | |
876b0e1c | 4397 | action_xlate_ctx_init(&trace.ctx, ofproto, &flow, packet); |
abe529af BP |
4398 | trace.ctx.resubmit_hook = trace_resubmit; |
4399 | odp_actions = xlate_actions(&trace.ctx, | |
4400 | rule->up.actions, rule->up.n_actions); | |
4401 | ||
4402 | ds_put_char(&result, '\n'); | |
4403 | trace_format_flow(&result, 0, "Final flow", &trace); | |
4404 | ds_put_cstr(&result, "Datapath actions: "); | |
4405 | format_odp_actions(&result, odp_actions->data, odp_actions->size); | |
4406 | ofpbuf_delete(odp_actions); | |
876b0e1c BP |
4407 | |
4408 | if (!trace.ctx.may_set_up_flow) { | |
4409 | if (packet) { | |
4410 | ds_put_cstr(&result, "\nThis flow is not cachable."); | |
4411 | } else { | |
4412 | ds_put_cstr(&result, "\nThe datapath actions are incomplete--" | |
4413 | "for complete actions, please supply a packet."); | |
4414 | } | |
4415 | } | |
abe529af BP |
4416 | } |
4417 | ||
4418 | unixctl_command_reply(conn, 200, ds_cstr(&result)); | |
4419 | ||
4420 | exit: | |
4421 | ds_destroy(&result); | |
876b0e1c BP |
4422 | ofpbuf_delete(packet); |
4423 | ofpbuf_uninit(&odp_key); | |
abe529af BP |
4424 | free(args); |
4425 | } | |
4426 | ||
7ee20df1 BP |
4427 | static void |
4428 | ofproto_dpif_clog(struct unixctl_conn *conn OVS_UNUSED, | |
4429 | const char *args_ OVS_UNUSED, void *aux OVS_UNUSED) | |
4430 | { | |
4431 | clogged = true; | |
4432 | unixctl_command_reply(conn, 200, NULL); | |
4433 | } | |
4434 | ||
4435 | static void | |
4436 | ofproto_dpif_unclog(struct unixctl_conn *conn OVS_UNUSED, | |
4437 | const char *args_ OVS_UNUSED, void *aux OVS_UNUSED) | |
4438 | { | |
4439 | clogged = false; | |
4440 | unixctl_command_reply(conn, 200, NULL); | |
4441 | } | |
4442 | ||
abe529af BP |
4443 | static void |
4444 | ofproto_dpif_unixctl_init(void) | |
4445 | { | |
4446 | static bool registered; | |
4447 | if (registered) { | |
4448 | return; | |
4449 | } | |
4450 | registered = true; | |
4451 | ||
4452 | unixctl_command_register("ofproto/trace", ofproto_unixctl_trace, NULL); | |
4453 | unixctl_command_register("fdb/show", ofproto_unixctl_fdb_show, NULL); | |
7ee20df1 BP |
4454 | |
4455 | unixctl_command_register("ofproto/clog", ofproto_dpif_clog, NULL); | |
4456 | unixctl_command_register("ofproto/unclog", ofproto_dpif_unclog, NULL); | |
abe529af BP |
4457 | } |
4458 | \f | |
4459 | const struct ofproto_class ofproto_dpif_class = { | |
4460 | enumerate_types, | |
4461 | enumerate_names, | |
4462 | del, | |
4463 | alloc, | |
4464 | construct, | |
4465 | destruct, | |
4466 | dealloc, | |
4467 | run, | |
4468 | wait, | |
4469 | flush, | |
6c1491fb BP |
4470 | get_features, |
4471 | get_tables, | |
abe529af BP |
4472 | port_alloc, |
4473 | port_construct, | |
4474 | port_destruct, | |
4475 | port_dealloc, | |
4476 | port_modified, | |
4477 | port_reconfigured, | |
4478 | port_query_by_name, | |
4479 | port_add, | |
4480 | port_del, | |
4481 | port_dump_start, | |
4482 | port_dump_next, | |
4483 | port_dump_done, | |
4484 | port_poll, | |
4485 | port_poll_wait, | |
4486 | port_is_lacp_current, | |
0ab6decf | 4487 | NULL, /* rule_choose_table */ |
abe529af BP |
4488 | rule_alloc, |
4489 | rule_construct, | |
4490 | rule_destruct, | |
4491 | rule_dealloc, | |
abe529af BP |
4492 | rule_get_stats, |
4493 | rule_execute, | |
4494 | rule_modify_actions, | |
4495 | get_drop_frags, | |
4496 | set_drop_frags, | |
4497 | packet_out, | |
4498 | set_netflow, | |
4499 | get_netflow_ids, | |
4500 | set_sflow, | |
4501 | set_cfm, | |
a5610457 | 4502 | get_cfm_fault, |
1de11730 | 4503 | get_cfm_remote_mpids, |
abe529af BP |
4504 | bundle_set, |
4505 | bundle_remove, | |
4506 | mirror_set, | |
4507 | set_flood_vlans, | |
4508 | is_mirror_output_bundle, | |
8402c74b | 4509 | forward_bpdu_changed, |
abe529af | 4510 | }; |