]>
Commit | Line | Data |
---|---|---|
0934ebba | 1 | /* Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014 Nicira, Inc. |
9583bc14 EJ |
2 | * |
3 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
4 | * you may not use this file except in compliance with the License. | |
5 | * You may obtain a copy of the License at: | |
6 | * | |
7 | * http://www.apache.org/licenses/LICENSE-2.0 | |
8 | * | |
9 | * Unless required by applicable law or agreed to in writing, software | |
10 | * distributed under the License is distributed on an "AS IS" BASIS, | |
11 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
12 | * See the License for the specific language governing permissions and | |
13 | * limitations under the License. */ | |
14 | ||
15 | #include <config.h> | |
16 | ||
17 | #include "ofproto/ofproto-dpif-xlate.h" | |
18 | ||
8449c4d6 | 19 | #include <errno.h> |
a36de779 PS |
20 | #include <arpa/inet.h> |
21 | #include <net/if.h> | |
22 | #include <sys/socket.h> | |
23 | #include <netinet/in.h> | |
8449c4d6 | 24 | |
a36de779 | 25 | #include "tnl-arp-cache.h" |
db7d4e46 | 26 | #include "bfd.h" |
9583bc14 EJ |
27 | #include "bitmap.h" |
28 | #include "bond.h" | |
29 | #include "bundle.h" | |
30 | #include "byte-order.h" | |
db7d4e46 | 31 | #include "cfm.h" |
9583bc14 EJ |
32 | #include "connmgr.h" |
33 | #include "coverage.h" | |
34 | #include "dpif.h" | |
35 | #include "dynamic-string.h" | |
f7f1ea29 | 36 | #include "in-band.h" |
db7d4e46 | 37 | #include "lacp.h" |
9583bc14 | 38 | #include "learn.h" |
46c88433 | 39 | #include "list.h" |
9583bc14 | 40 | #include "mac-learning.h" |
6d95c4e8 | 41 | #include "mcast-snooping.h" |
9583bc14 EJ |
42 | #include "meta-flow.h" |
43 | #include "multipath.h" | |
44 | #include "netdev-vport.h" | |
45 | #include "netlink.h" | |
46 | #include "nx-match.h" | |
47 | #include "odp-execute.h" | |
48 | #include "ofp-actions.h" | |
49 | #include "ofproto/ofproto-dpif-ipfix.h" | |
ec7ceaed | 50 | #include "ofproto/ofproto-dpif-mirror.h" |
60d02c72 | 51 | #include "ofproto/ofproto-dpif-monitor.h" |
9583bc14 EJ |
52 | #include "ofproto/ofproto-dpif-sflow.h" |
53 | #include "ofproto/ofproto-dpif.h" | |
6f00e29b | 54 | #include "ofproto/ofproto-provider.h" |
91088554 | 55 | #include "packet-dpif.h" |
a36de779 PS |
56 | #include "ovs-router.h" |
57 | #include "tnl-ports.h" | |
9583bc14 EJ |
58 | #include "tunnel.h" |
59 | #include "vlog.h" | |
60 | ||
46c88433 | 61 | COVERAGE_DEFINE(xlate_actions); |
0f032e95 | 62 | COVERAGE_DEFINE(xlate_actions_oversize); |
7d031d7e | 63 | COVERAGE_DEFINE(xlate_actions_too_many_output); |
8bfd0fda | 64 | COVERAGE_DEFINE(xlate_actions_mpls_overflow); |
9583bc14 EJ |
65 | |
66 | VLOG_DEFINE_THIS_MODULE(ofproto_dpif_xlate); | |
67 | ||
8a553e9a EJ |
68 | /* Maximum depth of flow table recursion (due to resubmit actions) in a |
69 | * flow translation. */ | |
70 | #define MAX_RESUBMIT_RECURSION 64 | |
adcf00ba AZ |
71 | #define MAX_INTERNAL_RESUBMITS 1 /* Max resbmits allowed using rules in |
72 | internal table. */ | |
8a553e9a | 73 | |
7bbdd84f SH |
74 | /* Timeout for internal rules created to handle recirculation */ |
75 | #define RECIRC_TIMEOUT 60 | |
76 | ||
98b07853 BP |
77 | /* Maximum number of resubmit actions in a flow translation, whether they are |
78 | * recursive or not. */ | |
79 | #define MAX_RESUBMITS (MAX_RESUBMIT_RECURSION * MAX_RESUBMIT_RECURSION) | |
80 | ||
46c88433 EJ |
81 | struct xbridge { |
82 | struct hmap_node hmap_node; /* Node in global 'xbridges' map. */ | |
83 | struct ofproto_dpif *ofproto; /* Key in global 'xbridges' map. */ | |
84 | ||
85 | struct list xbundles; /* Owned xbundles. */ | |
86 | struct hmap xports; /* Indexed by ofp_port. */ | |
87 | ||
88 | char *name; /* Name used in log messages. */ | |
89a8a7f0 | 89 | struct dpif *dpif; /* Datapath interface. */ |
46c88433 | 90 | struct mac_learning *ml; /* Mac learning handle. */ |
6d95c4e8 | 91 | struct mcast_snooping *ms; /* Multicast Snooping handle. */ |
46c88433 EJ |
92 | struct mbridge *mbridge; /* Mirroring. */ |
93 | struct dpif_sflow *sflow; /* SFlow handle, or null. */ | |
94 | struct dpif_ipfix *ipfix; /* Ipfix handle, or null. */ | |
ce3955be | 95 | struct netflow *netflow; /* Netflow handle, or null. */ |
9d189a50 | 96 | struct stp *stp; /* STP or null if disabled. */ |
9efd308e | 97 | struct rstp *rstp; /* RSTP or null if disabled. */ |
46c88433 | 98 | |
46c88433 EJ |
99 | bool has_in_band; /* Bridge has in band control? */ |
100 | bool forward_bpdu; /* Bridge forwards STP BPDUs? */ | |
4b97b70d | 101 | |
adcf00ba AZ |
102 | /* True if the datapath supports recirculation. */ |
103 | bool enable_recirc; | |
104 | ||
4b97b70d BP |
105 | /* True if the datapath supports variable-length |
106 | * OVS_USERSPACE_ATTR_USERDATA in OVS_ACTION_ATTR_USERSPACE actions. | |
107 | * False if the datapath supports only 8-byte (or shorter) userdata. */ | |
108 | bool variable_length_userdata; | |
8bfd0fda BP |
109 | |
110 | /* Number of MPLS label stack entries that the datapath supports | |
111 | * in matches. */ | |
112 | size_t max_mpls_depth; | |
53477c2c JR |
113 | |
114 | /* True if the datapath supports masked data in OVS_ACTION_ATTR_SET | |
115 | * actions. */ | |
116 | bool masked_set_action; | |
46c88433 EJ |
117 | }; |
118 | ||
119 | struct xbundle { | |
120 | struct hmap_node hmap_node; /* In global 'xbundles' map. */ | |
121 | struct ofbundle *ofbundle; /* Key in global 'xbundles' map. */ | |
122 | ||
123 | struct list list_node; /* In parent 'xbridges' list. */ | |
124 | struct xbridge *xbridge; /* Parent xbridge. */ | |
125 | ||
126 | struct list xports; /* Contains "struct xport"s. */ | |
127 | ||
128 | char *name; /* Name used in log messages. */ | |
129 | struct bond *bond; /* Nonnull iff more than one port. */ | |
130 | struct lacp *lacp; /* LACP handle or null. */ | |
131 | ||
132 | enum port_vlan_mode vlan_mode; /* VLAN mode. */ | |
133 | int vlan; /* -1=trunk port, else a 12-bit VLAN ID. */ | |
134 | unsigned long *trunks; /* Bitmap of trunked VLANs, if 'vlan' == -1. | |
135 | * NULL if all VLANs are trunked. */ | |
136 | bool use_priority_tags; /* Use 802.1p tag for frames in VLAN 0? */ | |
137 | bool floodable; /* No port has OFPUTIL_PC_NO_FLOOD set? */ | |
138 | }; | |
139 | ||
140 | struct xport { | |
141 | struct hmap_node hmap_node; /* Node in global 'xports' map. */ | |
142 | struct ofport_dpif *ofport; /* Key in global 'xports map. */ | |
143 | ||
144 | struct hmap_node ofp_node; /* Node in parent xbridge 'xports' map. */ | |
145 | ofp_port_t ofp_port; /* Key in parent xbridge 'xports' map. */ | |
146 | ||
147 | odp_port_t odp_port; /* Datapath port number or ODPP_NONE. */ | |
148 | ||
149 | struct list bundle_node; /* In parent xbundle (if it exists). */ | |
150 | struct xbundle *xbundle; /* Parent xbundle or null. */ | |
151 | ||
152 | struct netdev *netdev; /* 'ofport''s netdev. */ | |
153 | ||
154 | struct xbridge *xbridge; /* Parent bridge. */ | |
155 | struct xport *peer; /* Patch port peer or null. */ | |
156 | ||
157 | enum ofputil_port_config config; /* OpenFlow port configuration. */ | |
dd8cd4b4 | 158 | enum ofputil_port_state state; /* OpenFlow port state. */ |
92cf817b | 159 | int stp_port_no; /* STP port number or -1 if not in use. */ |
f025bcb7 | 160 | struct rstp_port *rstp_port; /* RSTP port or null. */ |
46c88433 | 161 | |
55954f6e EJ |
162 | struct hmap skb_priorities; /* Map of 'skb_priority_to_dscp's. */ |
163 | ||
46c88433 EJ |
164 | bool may_enable; /* May be enabled in bonds. */ |
165 | bool is_tunnel; /* Is a tunnel port. */ | |
166 | ||
167 | struct cfm *cfm; /* CFM handle or null. */ | |
168 | struct bfd *bfd; /* BFD handle or null. */ | |
169 | }; | |
170 | ||
4d0acc70 EJ |
171 | struct xlate_ctx { |
172 | struct xlate_in *xin; | |
173 | struct xlate_out *xout; | |
174 | ||
46c88433 | 175 | const struct xbridge *xbridge; |
4d0acc70 EJ |
176 | |
177 | /* Flow at the last commit. */ | |
178 | struct flow base_flow; | |
179 | ||
180 | /* Tunnel IP destination address as received. This is stored separately | |
181 | * as the base_flow.tunnel is cleared on init to reflect the datapath | |
182 | * behavior. Used to make sure not to send tunneled output to ourselves, | |
183 | * which might lead to an infinite loop. This could happen easily | |
184 | * if a tunnel is marked as 'ip_remote=flow', and the flow does not | |
185 | * actually set the tun_dst field. */ | |
186 | ovs_be32 orig_tunnel_ip_dst; | |
187 | ||
188 | /* Stack for the push and pop actions. Each stack element is of type | |
189 | * "union mf_subvalue". */ | |
190 | union mf_subvalue init_stack[1024 / sizeof(union mf_subvalue)]; | |
191 | struct ofpbuf stack; | |
192 | ||
193 | /* The rule that we are currently translating, or NULL. */ | |
194 | struct rule_dpif *rule; | |
195 | ||
98b07853 BP |
196 | /* Resubmit statistics, via xlate_table_action(). */ |
197 | int recurse; /* Current resubmit nesting depth. */ | |
198 | int resubmits; /* Total number of resubmits. */ | |
5a070238 | 199 | bool in_group; /* Currently translating ofgroup, if true. */ |
98b07853 | 200 | |
4d0acc70 EJ |
201 | uint32_t orig_skb_priority; /* Priority when packet arrived. */ |
202 | uint8_t table_id; /* OpenFlow table ID where flow was found. */ | |
203 | uint32_t sflow_n_outputs; /* Number of output ports. */ | |
4e022ec0 | 204 | odp_port_t sflow_odp_port; /* Output port for composing sFlow action. */ |
4d0acc70 EJ |
205 | uint16_t user_cookie_offset;/* Used for user_action_cookie fixup. */ |
206 | bool exit; /* No further actions should be processed. */ | |
7fdb60a7 | 207 | |
92c08f09 SH |
208 | bool use_recirc; /* Should generate recirc? */ |
209 | struct xlate_recirc recirc; /* Information used for generating | |
210 | * recirculation actions */ | |
211 | ||
7bbdd84f SH |
212 | /* True if a packet was but is no longer MPLS (due to an MPLS pop action). |
213 | * This is a trigger for recirculation in cases where translating an action | |
214 | * or looking up a flow requires access to the fields of the packet after | |
215 | * the MPLS label stack that was originally present. */ | |
216 | bool was_mpls; | |
217 | ||
7fdb60a7 SH |
218 | /* OpenFlow 1.1+ action set. |
219 | * | |
220 | * 'action_set' accumulates "struct ofpact"s added by OFPACT_WRITE_ACTIONS. | |
221 | * When translation is otherwise complete, ofpacts_execute_action_set() | |
222 | * converts it to a set of "struct ofpact"s that can be translated into | |
223 | * datapath actions. */ | |
c61f3870 | 224 | bool action_set_has_group; /* Action set contains OFPACT_GROUP? */ |
7fdb60a7 SH |
225 | struct ofpbuf action_set; /* Action set. */ |
226 | uint64_t action_set_stub[1024 / 8]; | |
4d0acc70 EJ |
227 | }; |
228 | ||
9583bc14 EJ |
229 | /* A controller may use OFPP_NONE as the ingress port to indicate that |
230 | * it did not arrive on a "real" port. 'ofpp_none_bundle' exists for | |
231 | * when an input bundle is needed for validation (e.g., mirroring or | |
232 | * OFPP_NORMAL processing). It is not connected to an 'ofproto' or have | |
3548d242 BP |
233 | * any 'port' structs, so care must be taken when dealing with it. */ |
234 | static struct xbundle ofpp_none_bundle = { | |
235 | .name = "OFPP_NONE", | |
236 | .vlan_mode = PORT_VLAN_TRUNK | |
237 | }; | |
9583bc14 | 238 | |
55954f6e EJ |
239 | /* Node in 'xport''s 'skb_priorities' map. Used to maintain a map from |
240 | * 'priority' (the datapath's term for QoS queue) to the dscp bits which all | |
241 | * traffic egressing the 'ofport' with that priority should be marked with. */ | |
242 | struct skb_priority_to_dscp { | |
243 | struct hmap_node hmap_node; /* Node in 'ofport_dpif''s 'skb_priorities'. */ | |
244 | uint32_t skb_priority; /* Priority of this queue (see struct flow). */ | |
245 | ||
246 | uint8_t dscp; /* DSCP bits to mark outgoing traffic with. */ | |
247 | }; | |
248 | ||
b256dc52 JS |
249 | enum xc_type { |
250 | XC_RULE, | |
251 | XC_BOND, | |
252 | XC_NETDEV, | |
253 | XC_NETFLOW, | |
254 | XC_MIRROR, | |
255 | XC_LEARN, | |
256 | XC_NORMAL, | |
257 | XC_FIN_TIMEOUT, | |
1e684d7d | 258 | XC_GROUP, |
a36de779 | 259 | XC_TNL_ARP, |
b256dc52 JS |
260 | }; |
261 | ||
262 | /* xlate_cache entries hold enough information to perform the side effects of | |
263 | * xlate_actions() for a rule, without needing to perform rule translation | |
264 | * from scratch. The primary usage of these is to submit statistics to objects | |
265 | * that a flow relates to, although they may be used for other effects as well | |
266 | * (for instance, refreshing hard timeouts for learned flows). */ | |
267 | struct xc_entry { | |
268 | enum xc_type type; | |
269 | union { | |
270 | struct rule_dpif *rule; | |
271 | struct { | |
272 | struct netdev *tx; | |
273 | struct netdev *rx; | |
274 | struct bfd *bfd; | |
275 | } dev; | |
276 | struct { | |
277 | struct netflow *netflow; | |
278 | struct flow *flow; | |
279 | ofp_port_t iface; | |
280 | } nf; | |
281 | struct { | |
282 | struct mbridge *mbridge; | |
283 | mirror_mask_t mirrors; | |
284 | } mirror; | |
285 | struct { | |
286 | struct bond *bond; | |
287 | struct flow *flow; | |
288 | uint16_t vid; | |
289 | } bond; | |
290 | struct { | |
4165b5e0 JS |
291 | struct ofproto_dpif *ofproto; |
292 | struct ofputil_flow_mod *fm; | |
293 | struct ofpbuf *ofpacts; | |
b256dc52 JS |
294 | } learn; |
295 | struct { | |
296 | struct ofproto_dpif *ofproto; | |
297 | struct flow *flow; | |
298 | int vlan; | |
299 | } normal; | |
300 | struct { | |
301 | struct rule_dpif *rule; | |
302 | uint16_t idle; | |
303 | uint16_t hard; | |
304 | } fin; | |
1e684d7d RW |
305 | struct { |
306 | struct group_dpif *group; | |
307 | struct ofputil_bucket *bucket; | |
308 | } group; | |
a36de779 PS |
309 | struct { |
310 | char br_name[IFNAMSIZ]; | |
311 | ovs_be32 d_ip; | |
312 | } tnl_arp_cache; | |
b256dc52 JS |
313 | } u; |
314 | }; | |
315 | ||
316 | #define XC_ENTRY_FOR_EACH(entry, entries, xcache) \ | |
317 | entries = xcache->entries; \ | |
318 | for (entry = ofpbuf_try_pull(&entries, sizeof *entry); \ | |
319 | entry; \ | |
320 | entry = ofpbuf_try_pull(&entries, sizeof *entry)) | |
321 | ||
322 | struct xlate_cache { | |
323 | struct ofpbuf entries; | |
324 | }; | |
325 | ||
84f0f298 RW |
326 | /* Xlate config contains hash maps of all bridges, bundles and ports. |
327 | * Xcfgp contains the pointer to the current xlate configuration. | |
328 | * When the main thread needs to change the configuration, it copies xcfgp to | |
329 | * new_xcfg and edits new_xcfg. This enables the use of RCU locking which | |
330 | * does not block handler and revalidator threads. */ | |
331 | struct xlate_cfg { | |
332 | struct hmap xbridges; | |
333 | struct hmap xbundles; | |
334 | struct hmap xports; | |
335 | }; | |
b1b72f2d | 336 | static OVSRCU_TYPE(struct xlate_cfg *) xcfgp = OVSRCU_INITIALIZER(NULL); |
f439f23b | 337 | static struct xlate_cfg *new_xcfg = NULL; |
46c88433 EJ |
338 | |
339 | static bool may_receive(const struct xport *, struct xlate_ctx *); | |
9583bc14 EJ |
340 | static void do_xlate_actions(const struct ofpact *, size_t ofpacts_len, |
341 | struct xlate_ctx *); | |
adcf00ba | 342 | static void xlate_normal(struct xlate_ctx *); |
34dd0d78 | 343 | static inline void xlate_report(struct xlate_ctx *, const char *); |
6d328fa2 SH |
344 | static void xlate_table_action(struct xlate_ctx *, ofp_port_t in_port, |
345 | uint8_t table_id, bool may_packet_in, | |
346 | bool honor_table_miss); | |
46c88433 EJ |
347 | static bool input_vid_is_valid(uint16_t vid, struct xbundle *, bool warn); |
348 | static uint16_t input_vid_to_vlan(const struct xbundle *, uint16_t vid); | |
349 | static void output_normal(struct xlate_ctx *, const struct xbundle *, | |
9583bc14 | 350 | uint16_t vlan); |
4e022ec0 | 351 | static void compose_output_action(struct xlate_ctx *, ofp_port_t ofp_port); |
9583bc14 | 352 | |
84f0f298 RW |
353 | static struct xbridge *xbridge_lookup(struct xlate_cfg *, |
354 | const struct ofproto_dpif *); | |
355 | static struct xbundle *xbundle_lookup(struct xlate_cfg *, | |
356 | const struct ofbundle *); | |
357 | static struct xport *xport_lookup(struct xlate_cfg *, | |
358 | const struct ofport_dpif *); | |
46c88433 | 359 | static struct xport *get_ofp_port(const struct xbridge *, ofp_port_t ofp_port); |
55954f6e EJ |
360 | static struct skb_priority_to_dscp *get_skb_priority(const struct xport *, |
361 | uint32_t skb_priority); | |
362 | static void clear_skb_priorities(struct xport *); | |
16194afd | 363 | static size_t count_skb_priorities(const struct xport *); |
55954f6e EJ |
364 | static bool dscp_from_skb_priority(const struct xport *, uint32_t skb_priority, |
365 | uint8_t *dscp); | |
46c88433 | 366 | |
b256dc52 JS |
367 | static struct xc_entry *xlate_cache_add_entry(struct xlate_cache *xc, |
368 | enum xc_type type); | |
84f0f298 RW |
369 | static void xlate_xbridge_init(struct xlate_cfg *, struct xbridge *); |
370 | static void xlate_xbundle_init(struct xlate_cfg *, struct xbundle *); | |
371 | static void xlate_xport_init(struct xlate_cfg *, struct xport *); | |
9efd308e | 372 | static void xlate_xbridge_set(struct xbridge *, struct dpif *, |
9efd308e DV |
373 | const struct mac_learning *, struct stp *, |
374 | struct rstp *, const struct mcast_snooping *, | |
375 | const struct mbridge *, | |
376 | const struct dpif_sflow *, | |
377 | const struct dpif_ipfix *, | |
2f47cdf4 | 378 | const struct netflow *, |
84f0f298 RW |
379 | bool forward_bpdu, bool has_in_band, |
380 | bool enable_recirc, | |
381 | bool variable_length_userdata, | |
53477c2c JR |
382 | size_t max_mpls_depth, |
383 | bool masked_set_action); | |
84f0f298 RW |
384 | static void xlate_xbundle_set(struct xbundle *xbundle, |
385 | enum port_vlan_mode vlan_mode, int vlan, | |
386 | unsigned long *trunks, bool use_priority_tags, | |
387 | const struct bond *bond, const struct lacp *lacp, | |
388 | bool floodable); | |
389 | static void xlate_xport_set(struct xport *xport, odp_port_t odp_port, | |
390 | const struct netdev *netdev, const struct cfm *cfm, | |
391 | const struct bfd *bfd, int stp_port_no, | |
f025bcb7 | 392 | const struct rstp_port *rstp_port, |
84f0f298 RW |
393 | enum ofputil_port_config config, |
394 | enum ofputil_port_state state, bool is_tunnel, | |
395 | bool may_enable); | |
396 | static void xlate_xbridge_remove(struct xlate_cfg *, struct xbridge *); | |
397 | static void xlate_xbundle_remove(struct xlate_cfg *, struct xbundle *); | |
398 | static void xlate_xport_remove(struct xlate_cfg *, struct xport *); | |
399 | static void xlate_xbridge_copy(struct xbridge *); | |
400 | static void xlate_xbundle_copy(struct xbridge *, struct xbundle *); | |
401 | static void xlate_xport_copy(struct xbridge *, struct xbundle *, | |
402 | struct xport *); | |
403 | static void xlate_xcfg_free(struct xlate_cfg *); | |
b256dc52 | 404 | |
34dd0d78 JR |
405 | static inline void |
406 | xlate_report(struct xlate_ctx *ctx, const char *s) | |
407 | { | |
408 | if (OVS_UNLIKELY(ctx->xin->report_hook)) { | |
409 | ctx->xin->report_hook(ctx->xin, s, ctx->recurse); | |
410 | } | |
411 | } | |
84f0f298 RW |
412 | |
413 | static void | |
414 | xlate_xbridge_init(struct xlate_cfg *xcfg, struct xbridge *xbridge) | |
415 | { | |
416 | list_init(&xbridge->xbundles); | |
417 | hmap_init(&xbridge->xports); | |
418 | hmap_insert(&xcfg->xbridges, &xbridge->hmap_node, | |
419 | hash_pointer(xbridge->ofproto, 0)); | |
420 | } | |
421 | ||
422 | static void | |
423 | xlate_xbundle_init(struct xlate_cfg *xcfg, struct xbundle *xbundle) | |
424 | { | |
425 | list_init(&xbundle->xports); | |
426 | list_insert(&xbundle->xbridge->xbundles, &xbundle->list_node); | |
427 | hmap_insert(&xcfg->xbundles, &xbundle->hmap_node, | |
428 | hash_pointer(xbundle->ofbundle, 0)); | |
429 | } | |
430 | ||
431 | static void | |
432 | xlate_xport_init(struct xlate_cfg *xcfg, struct xport *xport) | |
433 | { | |
434 | hmap_init(&xport->skb_priorities); | |
435 | hmap_insert(&xcfg->xports, &xport->hmap_node, | |
436 | hash_pointer(xport->ofport, 0)); | |
437 | hmap_insert(&xport->xbridge->xports, &xport->ofp_node, | |
438 | hash_ofp_port(xport->ofp_port)); | |
439 | } | |
440 | ||
441 | static void | |
442 | xlate_xbridge_set(struct xbridge *xbridge, | |
443 | struct dpif *dpif, | |
ec89fc6f | 444 | const struct mac_learning *ml, struct stp *stp, |
9efd308e | 445 | struct rstp *rstp, const struct mcast_snooping *ms, |
ec89fc6f | 446 | const struct mbridge *mbridge, |
46c88433 | 447 | const struct dpif_sflow *sflow, |
ce3955be | 448 | const struct dpif_ipfix *ipfix, |
2f47cdf4 | 449 | const struct netflow *netflow, |
4b97b70d | 450 | bool forward_bpdu, bool has_in_band, |
adcf00ba | 451 | bool enable_recirc, |
8bfd0fda | 452 | bool variable_length_userdata, |
53477c2c JR |
453 | size_t max_mpls_depth, |
454 | bool masked_set_action) | |
46c88433 | 455 | { |
46c88433 EJ |
456 | if (xbridge->ml != ml) { |
457 | mac_learning_unref(xbridge->ml); | |
458 | xbridge->ml = mac_learning_ref(ml); | |
459 | } | |
460 | ||
6d95c4e8 FL |
461 | if (xbridge->ms != ms) { |
462 | mcast_snooping_unref(xbridge->ms); | |
463 | xbridge->ms = mcast_snooping_ref(ms); | |
464 | } | |
465 | ||
46c88433 EJ |
466 | if (xbridge->mbridge != mbridge) { |
467 | mbridge_unref(xbridge->mbridge); | |
468 | xbridge->mbridge = mbridge_ref(mbridge); | |
469 | } | |
470 | ||
471 | if (xbridge->sflow != sflow) { | |
472 | dpif_sflow_unref(xbridge->sflow); | |
473 | xbridge->sflow = dpif_sflow_ref(sflow); | |
474 | } | |
475 | ||
476 | if (xbridge->ipfix != ipfix) { | |
477 | dpif_ipfix_unref(xbridge->ipfix); | |
478 | xbridge->ipfix = dpif_ipfix_ref(ipfix); | |
479 | } | |
480 | ||
9d189a50 EJ |
481 | if (xbridge->stp != stp) { |
482 | stp_unref(xbridge->stp); | |
483 | xbridge->stp = stp_ref(stp); | |
484 | } | |
485 | ||
9efd308e DV |
486 | if (xbridge->rstp != rstp) { |
487 | rstp_unref(xbridge->rstp); | |
488 | xbridge->rstp = rstp_ref(rstp); | |
489 | } | |
490 | ||
ce3955be EJ |
491 | if (xbridge->netflow != netflow) { |
492 | netflow_unref(xbridge->netflow); | |
493 | xbridge->netflow = netflow_ref(netflow); | |
494 | } | |
495 | ||
89a8a7f0 | 496 | xbridge->dpif = dpif; |
46c88433 EJ |
497 | xbridge->forward_bpdu = forward_bpdu; |
498 | xbridge->has_in_band = has_in_band; | |
adcf00ba | 499 | xbridge->enable_recirc = enable_recirc; |
4b97b70d | 500 | xbridge->variable_length_userdata = variable_length_userdata; |
8bfd0fda | 501 | xbridge->max_mpls_depth = max_mpls_depth; |
53477c2c | 502 | xbridge->masked_set_action = masked_set_action; |
46c88433 EJ |
503 | } |
504 | ||
84f0f298 RW |
505 | static void |
506 | xlate_xbundle_set(struct xbundle *xbundle, | |
507 | enum port_vlan_mode vlan_mode, int vlan, | |
508 | unsigned long *trunks, bool use_priority_tags, | |
509 | const struct bond *bond, const struct lacp *lacp, | |
510 | bool floodable) | |
511 | { | |
512 | ovs_assert(xbundle->xbridge); | |
513 | ||
514 | xbundle->vlan_mode = vlan_mode; | |
515 | xbundle->vlan = vlan; | |
516 | xbundle->trunks = trunks; | |
517 | xbundle->use_priority_tags = use_priority_tags; | |
518 | xbundle->floodable = floodable; | |
519 | ||
520 | if (xbundle->bond != bond) { | |
521 | bond_unref(xbundle->bond); | |
522 | xbundle->bond = bond_ref(bond); | |
523 | } | |
524 | ||
525 | if (xbundle->lacp != lacp) { | |
526 | lacp_unref(xbundle->lacp); | |
527 | xbundle->lacp = lacp_ref(lacp); | |
528 | } | |
529 | } | |
530 | ||
531 | static void | |
532 | xlate_xport_set(struct xport *xport, odp_port_t odp_port, | |
533 | const struct netdev *netdev, const struct cfm *cfm, | |
f025bcb7 JR |
534 | const struct bfd *bfd, int stp_port_no, |
535 | const struct rstp_port* rstp_port, | |
84f0f298 RW |
536 | enum ofputil_port_config config, enum ofputil_port_state state, |
537 | bool is_tunnel, bool may_enable) | |
538 | { | |
539 | xport->config = config; | |
540 | xport->state = state; | |
541 | xport->stp_port_no = stp_port_no; | |
542 | xport->is_tunnel = is_tunnel; | |
543 | xport->may_enable = may_enable; | |
544 | xport->odp_port = odp_port; | |
545 | ||
f025bcb7 JR |
546 | if (xport->rstp_port != rstp_port) { |
547 | rstp_port_unref(xport->rstp_port); | |
548 | xport->rstp_port = rstp_port_ref(rstp_port); | |
549 | } | |
550 | ||
84f0f298 RW |
551 | if (xport->cfm != cfm) { |
552 | cfm_unref(xport->cfm); | |
553 | xport->cfm = cfm_ref(cfm); | |
554 | } | |
555 | ||
556 | if (xport->bfd != bfd) { | |
557 | bfd_unref(xport->bfd); | |
558 | xport->bfd = bfd_ref(bfd); | |
559 | } | |
560 | ||
561 | if (xport->netdev != netdev) { | |
562 | netdev_close(xport->netdev); | |
563 | xport->netdev = netdev_ref(netdev); | |
564 | } | |
565 | } | |
566 | ||
567 | static void | |
568 | xlate_xbridge_copy(struct xbridge *xbridge) | |
569 | { | |
570 | struct xbundle *xbundle; | |
571 | struct xport *xport; | |
572 | struct xbridge *new_xbridge = xzalloc(sizeof *xbridge); | |
573 | new_xbridge->ofproto = xbridge->ofproto; | |
574 | new_xbridge->name = xstrdup(xbridge->name); | |
575 | xlate_xbridge_init(new_xcfg, new_xbridge); | |
576 | ||
577 | xlate_xbridge_set(new_xbridge, | |
34dd0d78 | 578 | xbridge->dpif, xbridge->ml, xbridge->stp, |
9efd308e DV |
579 | xbridge->rstp, xbridge->ms, xbridge->mbridge, |
580 | xbridge->sflow, xbridge->ipfix, xbridge->netflow, | |
2f47cdf4 | 581 | xbridge->forward_bpdu, |
9efd308e DV |
582 | xbridge->has_in_band, xbridge->enable_recirc, |
583 | xbridge->variable_length_userdata, | |
53477c2c | 584 | xbridge->max_mpls_depth, xbridge->masked_set_action); |
84f0f298 RW |
585 | LIST_FOR_EACH (xbundle, list_node, &xbridge->xbundles) { |
586 | xlate_xbundle_copy(new_xbridge, xbundle); | |
587 | } | |
588 | ||
589 | /* Copy xports which are not part of a xbundle */ | |
590 | HMAP_FOR_EACH (xport, ofp_node, &xbridge->xports) { | |
591 | if (!xport->xbundle) { | |
592 | xlate_xport_copy(new_xbridge, NULL, xport); | |
593 | } | |
594 | } | |
595 | } | |
596 | ||
597 | static void | |
598 | xlate_xbundle_copy(struct xbridge *xbridge, struct xbundle *xbundle) | |
599 | { | |
600 | struct xport *xport; | |
601 | struct xbundle *new_xbundle = xzalloc(sizeof *xbundle); | |
602 | new_xbundle->ofbundle = xbundle->ofbundle; | |
603 | new_xbundle->xbridge = xbridge; | |
604 | new_xbundle->name = xstrdup(xbundle->name); | |
605 | xlate_xbundle_init(new_xcfg, new_xbundle); | |
606 | ||
607 | xlate_xbundle_set(new_xbundle, xbundle->vlan_mode, | |
608 | xbundle->vlan, xbundle->trunks, | |
609 | xbundle->use_priority_tags, xbundle->bond, xbundle->lacp, | |
610 | xbundle->floodable); | |
611 | LIST_FOR_EACH (xport, bundle_node, &xbundle->xports) { | |
612 | xlate_xport_copy(xbridge, new_xbundle, xport); | |
613 | } | |
614 | } | |
615 | ||
616 | static void | |
617 | xlate_xport_copy(struct xbridge *xbridge, struct xbundle *xbundle, | |
618 | struct xport *xport) | |
619 | { | |
620 | struct skb_priority_to_dscp *pdscp, *new_pdscp; | |
621 | struct xport *new_xport = xzalloc(sizeof *xport); | |
622 | new_xport->ofport = xport->ofport; | |
623 | new_xport->ofp_port = xport->ofp_port; | |
624 | new_xport->xbridge = xbridge; | |
625 | xlate_xport_init(new_xcfg, new_xport); | |
626 | ||
627 | xlate_xport_set(new_xport, xport->odp_port, xport->netdev, xport->cfm, | |
f025bcb7 | 628 | xport->bfd, xport->stp_port_no, xport->rstp_port, |
9efd308e DV |
629 | xport->config, xport->state, xport->is_tunnel, |
630 | xport->may_enable); | |
84f0f298 RW |
631 | |
632 | if (xport->peer) { | |
633 | struct xport *peer = xport_lookup(new_xcfg, xport->peer->ofport); | |
634 | if (peer) { | |
635 | new_xport->peer = peer; | |
636 | new_xport->peer->peer = new_xport; | |
637 | } | |
638 | } | |
639 | ||
640 | if (xbundle) { | |
641 | new_xport->xbundle = xbundle; | |
642 | list_insert(&new_xport->xbundle->xports, &new_xport->bundle_node); | |
643 | } | |
644 | ||
645 | HMAP_FOR_EACH (pdscp, hmap_node, &xport->skb_priorities) { | |
646 | new_pdscp = xmalloc(sizeof *pdscp); | |
647 | new_pdscp->skb_priority = pdscp->skb_priority; | |
648 | new_pdscp->dscp = pdscp->dscp; | |
649 | hmap_insert(&new_xport->skb_priorities, &new_pdscp->hmap_node, | |
650 | hash_int(new_pdscp->skb_priority, 0)); | |
651 | } | |
652 | } | |
653 | ||
654 | /* Sets the current xlate configuration to new_xcfg and frees the old xlate | |
655 | * configuration in xcfgp. | |
656 | * | |
657 | * This needs to be called after editing the xlate configuration. | |
658 | * | |
659 | * Functions that edit the new xlate configuration are | |
660 | * xlate_<ofport/bundle/ofport>_set and xlate_<ofport/bundle/ofport>_remove. | |
661 | * | |
662 | * A sample workflow: | |
663 | * | |
664 | * xlate_txn_start(); | |
665 | * ... | |
666 | * edit_xlate_configuration(); | |
667 | * ... | |
668 | * xlate_txn_commit(); */ | |
46c88433 | 669 | void |
84f0f298 RW |
670 | xlate_txn_commit(void) |
671 | { | |
672 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
673 | ||
674 | ovsrcu_set(&xcfgp, new_xcfg); | |
675 | ovsrcu_postpone(xlate_xcfg_free, xcfg); | |
676 | ||
677 | new_xcfg = NULL; | |
678 | } | |
679 | ||
680 | /* Copies the current xlate configuration in xcfgp to new_xcfg. | |
681 | * | |
682 | * This needs to be called prior to editing the xlate configuration. */ | |
683 | void | |
684 | xlate_txn_start(void) | |
685 | { | |
686 | struct xbridge *xbridge; | |
687 | struct xlate_cfg *xcfg; | |
688 | ||
689 | ovs_assert(!new_xcfg); | |
690 | ||
691 | new_xcfg = xmalloc(sizeof *new_xcfg); | |
692 | hmap_init(&new_xcfg->xbridges); | |
693 | hmap_init(&new_xcfg->xbundles); | |
694 | hmap_init(&new_xcfg->xports); | |
695 | ||
696 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
697 | if (!xcfg) { | |
698 | return; | |
699 | } | |
700 | ||
701 | HMAP_FOR_EACH (xbridge, hmap_node, &xcfg->xbridges) { | |
702 | xlate_xbridge_copy(xbridge); | |
703 | } | |
704 | } | |
705 | ||
706 | ||
707 | static void | |
708 | xlate_xcfg_free(struct xlate_cfg *xcfg) | |
709 | { | |
710 | struct xbridge *xbridge, *next_xbridge; | |
711 | ||
712 | if (!xcfg) { | |
713 | return; | |
714 | } | |
715 | ||
716 | HMAP_FOR_EACH_SAFE (xbridge, next_xbridge, hmap_node, &xcfg->xbridges) { | |
717 | xlate_xbridge_remove(xcfg, xbridge); | |
718 | } | |
719 | ||
720 | hmap_destroy(&xcfg->xbridges); | |
721 | hmap_destroy(&xcfg->xbundles); | |
722 | hmap_destroy(&xcfg->xports); | |
723 | free(xcfg); | |
724 | } | |
725 | ||
726 | void | |
727 | xlate_ofproto_set(struct ofproto_dpif *ofproto, const char *name, | |
34dd0d78 | 728 | struct dpif *dpif, |
84f0f298 | 729 | const struct mac_learning *ml, struct stp *stp, |
9efd308e | 730 | struct rstp *rstp, const struct mcast_snooping *ms, |
84f0f298 RW |
731 | const struct mbridge *mbridge, |
732 | const struct dpif_sflow *sflow, | |
733 | const struct dpif_ipfix *ipfix, | |
2f47cdf4 | 734 | const struct netflow *netflow, |
9efd308e | 735 | bool forward_bpdu, bool has_in_band, bool enable_recirc, |
53477c2c JR |
736 | bool variable_length_userdata, size_t max_mpls_depth, |
737 | bool masked_set_action) | |
84f0f298 RW |
738 | { |
739 | struct xbridge *xbridge; | |
740 | ||
741 | ovs_assert(new_xcfg); | |
742 | ||
743 | xbridge = xbridge_lookup(new_xcfg, ofproto); | |
744 | if (!xbridge) { | |
745 | xbridge = xzalloc(sizeof *xbridge); | |
746 | xbridge->ofproto = ofproto; | |
747 | ||
748 | xlate_xbridge_init(new_xcfg, xbridge); | |
749 | } | |
750 | ||
751 | free(xbridge->name); | |
752 | xbridge->name = xstrdup(name); | |
753 | ||
34dd0d78 JR |
754 | xlate_xbridge_set(xbridge, dpif, ml, stp, rstp, ms, mbridge, sflow, ipfix, |
755 | netflow, forward_bpdu, has_in_band, enable_recirc, | |
53477c2c JR |
756 | variable_length_userdata, max_mpls_depth, |
757 | masked_set_action); | |
84f0f298 RW |
758 | } |
759 | ||
760 | static void | |
761 | xlate_xbridge_remove(struct xlate_cfg *xcfg, struct xbridge *xbridge) | |
46c88433 | 762 | { |
46c88433 EJ |
763 | struct xbundle *xbundle, *next_xbundle; |
764 | struct xport *xport, *next_xport; | |
765 | ||
766 | if (!xbridge) { | |
767 | return; | |
768 | } | |
769 | ||
770 | HMAP_FOR_EACH_SAFE (xport, next_xport, ofp_node, &xbridge->xports) { | |
84f0f298 | 771 | xlate_xport_remove(xcfg, xport); |
46c88433 EJ |
772 | } |
773 | ||
774 | LIST_FOR_EACH_SAFE (xbundle, next_xbundle, list_node, &xbridge->xbundles) { | |
84f0f298 | 775 | xlate_xbundle_remove(xcfg, xbundle); |
46c88433 EJ |
776 | } |
777 | ||
84f0f298 | 778 | hmap_remove(&xcfg->xbridges, &xbridge->hmap_node); |
795cc5c1 | 779 | mac_learning_unref(xbridge->ml); |
6d95c4e8 | 780 | mcast_snooping_unref(xbridge->ms); |
795cc5c1 EJ |
781 | mbridge_unref(xbridge->mbridge); |
782 | dpif_sflow_unref(xbridge->sflow); | |
783 | dpif_ipfix_unref(xbridge->ipfix); | |
784 | stp_unref(xbridge->stp); | |
9efd308e | 785 | rstp_unref(xbridge->rstp); |
795cc5c1 | 786 | hmap_destroy(&xbridge->xports); |
46c88433 EJ |
787 | free(xbridge->name); |
788 | free(xbridge); | |
789 | } | |
790 | ||
84f0f298 RW |
791 | void |
792 | xlate_remove_ofproto(struct ofproto_dpif *ofproto) | |
793 | { | |
794 | struct xbridge *xbridge; | |
795 | ||
796 | ovs_assert(new_xcfg); | |
797 | ||
798 | xbridge = xbridge_lookup(new_xcfg, ofproto); | |
799 | xlate_xbridge_remove(new_xcfg, xbridge); | |
800 | } | |
801 | ||
46c88433 EJ |
802 | void |
803 | xlate_bundle_set(struct ofproto_dpif *ofproto, struct ofbundle *ofbundle, | |
804 | const char *name, enum port_vlan_mode vlan_mode, int vlan, | |
805 | unsigned long *trunks, bool use_priority_tags, | |
806 | const struct bond *bond, const struct lacp *lacp, | |
807 | bool floodable) | |
808 | { | |
84f0f298 | 809 | struct xbundle *xbundle; |
46c88433 | 810 | |
84f0f298 RW |
811 | ovs_assert(new_xcfg); |
812 | ||
813 | xbundle = xbundle_lookup(new_xcfg, ofbundle); | |
46c88433 EJ |
814 | if (!xbundle) { |
815 | xbundle = xzalloc(sizeof *xbundle); | |
816 | xbundle->ofbundle = ofbundle; | |
84f0f298 | 817 | xbundle->xbridge = xbridge_lookup(new_xcfg, ofproto); |
46c88433 | 818 | |
84f0f298 | 819 | xlate_xbundle_init(new_xcfg, xbundle); |
46c88433 EJ |
820 | } |
821 | ||
46c88433 EJ |
822 | free(xbundle->name); |
823 | xbundle->name = xstrdup(name); | |
824 | ||
84f0f298 RW |
825 | xlate_xbundle_set(xbundle, vlan_mode, vlan, trunks, |
826 | use_priority_tags, bond, lacp, floodable); | |
46c88433 EJ |
827 | } |
828 | ||
84f0f298 RW |
829 | static void |
830 | xlate_xbundle_remove(struct xlate_cfg *xcfg, struct xbundle *xbundle) | |
46c88433 | 831 | { |
46c88433 EJ |
832 | struct xport *xport, *next; |
833 | ||
834 | if (!xbundle) { | |
835 | return; | |
836 | } | |
837 | ||
838 | LIST_FOR_EACH_SAFE (xport, next, bundle_node, &xbundle->xports) { | |
839 | list_remove(&xport->bundle_node); | |
840 | xport->xbundle = NULL; | |
841 | } | |
842 | ||
84f0f298 | 843 | hmap_remove(&xcfg->xbundles, &xbundle->hmap_node); |
46c88433 EJ |
844 | list_remove(&xbundle->list_node); |
845 | bond_unref(xbundle->bond); | |
846 | lacp_unref(xbundle->lacp); | |
847 | free(xbundle->name); | |
848 | free(xbundle); | |
849 | } | |
850 | ||
84f0f298 RW |
851 | void |
852 | xlate_bundle_remove(struct ofbundle *ofbundle) | |
853 | { | |
854 | struct xbundle *xbundle; | |
855 | ||
856 | ovs_assert(new_xcfg); | |
857 | ||
858 | xbundle = xbundle_lookup(new_xcfg, ofbundle); | |
859 | xlate_xbundle_remove(new_xcfg, xbundle); | |
860 | } | |
861 | ||
46c88433 EJ |
862 | void |
863 | xlate_ofport_set(struct ofproto_dpif *ofproto, struct ofbundle *ofbundle, | |
864 | struct ofport_dpif *ofport, ofp_port_t ofp_port, | |
865 | odp_port_t odp_port, const struct netdev *netdev, | |
866 | const struct cfm *cfm, const struct bfd *bfd, | |
f025bcb7 JR |
867 | struct ofport_dpif *peer, int stp_port_no, |
868 | const struct rstp_port *rstp_port, | |
55954f6e | 869 | const struct ofproto_port_queue *qdscp_list, size_t n_qdscp, |
dd8cd4b4 SH |
870 | enum ofputil_port_config config, |
871 | enum ofputil_port_state state, bool is_tunnel, | |
9d189a50 | 872 | bool may_enable) |
46c88433 | 873 | { |
55954f6e | 874 | size_t i; |
84f0f298 RW |
875 | struct xport *xport; |
876 | ||
877 | ovs_assert(new_xcfg); | |
46c88433 | 878 | |
84f0f298 | 879 | xport = xport_lookup(new_xcfg, ofport); |
46c88433 EJ |
880 | if (!xport) { |
881 | xport = xzalloc(sizeof *xport); | |
882 | xport->ofport = ofport; | |
84f0f298 | 883 | xport->xbridge = xbridge_lookup(new_xcfg, ofproto); |
46c88433 EJ |
884 | xport->ofp_port = ofp_port; |
885 | ||
84f0f298 | 886 | xlate_xport_init(new_xcfg, xport); |
46c88433 EJ |
887 | } |
888 | ||
889 | ovs_assert(xport->ofp_port == ofp_port); | |
890 | ||
9efd308e | 891 | xlate_xport_set(xport, odp_port, netdev, cfm, bfd, stp_port_no, |
f025bcb7 | 892 | rstp_port, config, state, is_tunnel, may_enable); |
46c88433 EJ |
893 | |
894 | if (xport->peer) { | |
895 | xport->peer->peer = NULL; | |
896 | } | |
84f0f298 | 897 | xport->peer = xport_lookup(new_xcfg, peer); |
46c88433 EJ |
898 | if (xport->peer) { |
899 | xport->peer->peer = xport; | |
900 | } | |
901 | ||
902 | if (xport->xbundle) { | |
903 | list_remove(&xport->bundle_node); | |
904 | } | |
84f0f298 | 905 | xport->xbundle = xbundle_lookup(new_xcfg, ofbundle); |
46c88433 EJ |
906 | if (xport->xbundle) { |
907 | list_insert(&xport->xbundle->xports, &xport->bundle_node); | |
908 | } | |
55954f6e EJ |
909 | |
910 | clear_skb_priorities(xport); | |
911 | for (i = 0; i < n_qdscp; i++) { | |
912 | struct skb_priority_to_dscp *pdscp; | |
913 | uint32_t skb_priority; | |
914 | ||
89a8a7f0 EJ |
915 | if (dpif_queue_to_priority(xport->xbridge->dpif, qdscp_list[i].queue, |
916 | &skb_priority)) { | |
55954f6e EJ |
917 | continue; |
918 | } | |
919 | ||
920 | pdscp = xmalloc(sizeof *pdscp); | |
921 | pdscp->skb_priority = skb_priority; | |
922 | pdscp->dscp = (qdscp_list[i].dscp << 2) & IP_DSCP_MASK; | |
923 | hmap_insert(&xport->skb_priorities, &pdscp->hmap_node, | |
924 | hash_int(pdscp->skb_priority, 0)); | |
925 | } | |
46c88433 EJ |
926 | } |
927 | ||
84f0f298 RW |
928 | static void |
929 | xlate_xport_remove(struct xlate_cfg *xcfg, struct xport *xport) | |
46c88433 | 930 | { |
46c88433 EJ |
931 | if (!xport) { |
932 | return; | |
933 | } | |
934 | ||
935 | if (xport->peer) { | |
936 | xport->peer->peer = NULL; | |
937 | xport->peer = NULL; | |
938 | } | |
939 | ||
e621a12d EJ |
940 | if (xport->xbundle) { |
941 | list_remove(&xport->bundle_node); | |
942 | } | |
943 | ||
55954f6e EJ |
944 | clear_skb_priorities(xport); |
945 | hmap_destroy(&xport->skb_priorities); | |
946 | ||
84f0f298 | 947 | hmap_remove(&xcfg->xports, &xport->hmap_node); |
46c88433 EJ |
948 | hmap_remove(&xport->xbridge->xports, &xport->ofp_node); |
949 | ||
950 | netdev_close(xport->netdev); | |
f025bcb7 | 951 | rstp_port_unref(xport->rstp_port); |
46c88433 EJ |
952 | cfm_unref(xport->cfm); |
953 | bfd_unref(xport->bfd); | |
954 | free(xport); | |
955 | } | |
956 | ||
84f0f298 RW |
957 | void |
958 | xlate_ofport_remove(struct ofport_dpif *ofport) | |
959 | { | |
960 | struct xport *xport; | |
961 | ||
962 | ovs_assert(new_xcfg); | |
963 | ||
964 | xport = xport_lookup(new_xcfg, ofport); | |
965 | xlate_xport_remove(new_xcfg, xport); | |
966 | } | |
967 | ||
ef377a58 JR |
968 | /* Given a datapath and flow metadata ('backer', and 'flow' respectively) |
969 | * returns the corresponding struct xport, or NULL if none is found. */ | |
970 | static struct xport * | |
971 | xlate_lookup_xport(const struct dpif_backer *backer, const struct flow *flow) | |
972 | { | |
973 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
974 | ||
975 | return xport_lookup(xcfg, tnl_port_should_receive(flow) | |
976 | ? tnl_port_receive(flow) | |
977 | : odp_port_to_ofport(backer, flow->in_port.odp_port)); | |
978 | } | |
979 | ||
980 | static struct ofproto_dpif * | |
981 | xlate_lookup_ofproto_(const struct dpif_backer *backer, const struct flow *flow, | |
982 | ofp_port_t *ofp_in_port, const struct xport **xportp) | |
983 | { | |
984 | const struct xport *xport; | |
985 | ||
986 | *xportp = xport = xlate_lookup_xport(backer, flow); | |
987 | ||
988 | if (xport) { | |
989 | if (ofp_in_port) { | |
990 | *ofp_in_port = xport->ofp_port; | |
991 | } | |
992 | return xport->xbridge->ofproto; | |
993 | } | |
994 | ||
995 | return NULL; | |
996 | } | |
997 | ||
998 | /* Given a datapath and flow metadata ('backer', and 'flow' respectively) | |
999 | * returns the corresponding struct ofproto_dpif and OpenFlow port number. */ | |
1000 | struct ofproto_dpif * | |
1001 | xlate_lookup_ofproto(const struct dpif_backer *backer, const struct flow *flow, | |
1002 | ofp_port_t *ofp_in_port) | |
1003 | { | |
1004 | const struct xport *xport; | |
1005 | ||
1006 | return xlate_lookup_ofproto_(backer, flow, ofp_in_port, &xport); | |
1007 | } | |
1008 | ||
cc377352 | 1009 | /* Given a datapath and flow metadata ('backer', and 'flow' respectively), |
ef377a58 | 1010 | * optionally populates 'ofproto' with the ofproto_dpif, 'ofp_in_port' with the |
cc377352 | 1011 | * openflow in_port, and 'ipfix', 'sflow', and 'netflow' with the appropriate |
dcc2c6cd JR |
1012 | * handles for those protocols if they're enabled. Caller may use the returned |
1013 | * pointers until quiescing, for longer term use additional references must | |
1014 | * be taken. | |
8449c4d6 | 1015 | * |
ef377a58 | 1016 | * '*ofp_in_port' is set to OFPP_NONE if 'flow''s in_port does not exist. |
8449c4d6 | 1017 | * |
ef377a58 JR |
1018 | * Returns 0 if successful, ENODEV if the parsed flow has no associated ofport. |
1019 | */ | |
8449c4d6 | 1020 | int |
5c476ea3 JR |
1021 | xlate_lookup(const struct dpif_backer *backer, const struct flow *flow, |
1022 | struct ofproto_dpif **ofprotop, struct dpif_ipfix **ipfix, | |
1023 | struct dpif_sflow **sflow, struct netflow **netflow, | |
1024 | ofp_port_t *ofp_in_port) | |
8449c4d6 | 1025 | { |
ef377a58 | 1026 | struct ofproto_dpif *ofproto; |
84f0f298 | 1027 | const struct xport *xport; |
8449c4d6 | 1028 | |
ef377a58 | 1029 | ofproto = xlate_lookup_ofproto_(backer, flow, ofp_in_port, &xport); |
8449c4d6 | 1030 | |
ef377a58 JR |
1031 | if (ofp_in_port && !xport) { |
1032 | *ofp_in_port = OFPP_NONE; | |
8449c4d6 EJ |
1033 | } |
1034 | ||
cc377352 EJ |
1035 | if (!xport) { |
1036 | return ENODEV; | |
8449c4d6 | 1037 | } |
8449c4d6 | 1038 | |
ef377a58 JR |
1039 | if (ofprotop) { |
1040 | *ofprotop = ofproto; | |
8449c4d6 EJ |
1041 | } |
1042 | ||
1dfdb9b3 | 1043 | if (ipfix) { |
dcc2c6cd | 1044 | *ipfix = xport->xbridge->ipfix; |
1dfdb9b3 EJ |
1045 | } |
1046 | ||
1047 | if (sflow) { | |
dcc2c6cd | 1048 | *sflow = xport->xbridge->sflow; |
1dfdb9b3 EJ |
1049 | } |
1050 | ||
1051 | if (netflow) { | |
dcc2c6cd | 1052 | *netflow = xport->xbridge->netflow; |
1dfdb9b3 | 1053 | } |
cc377352 | 1054 | return 0; |
8449c4d6 EJ |
1055 | } |
1056 | ||
46c88433 | 1057 | static struct xbridge * |
84f0f298 | 1058 | xbridge_lookup(struct xlate_cfg *xcfg, const struct ofproto_dpif *ofproto) |
46c88433 | 1059 | { |
84f0f298 | 1060 | struct hmap *xbridges; |
46c88433 EJ |
1061 | struct xbridge *xbridge; |
1062 | ||
84f0f298 | 1063 | if (!ofproto || !xcfg) { |
5e6af486 EJ |
1064 | return NULL; |
1065 | } | |
1066 | ||
84f0f298 RW |
1067 | xbridges = &xcfg->xbridges; |
1068 | ||
46c88433 | 1069 | HMAP_FOR_EACH_IN_BUCKET (xbridge, hmap_node, hash_pointer(ofproto, 0), |
84f0f298 | 1070 | xbridges) { |
46c88433 EJ |
1071 | if (xbridge->ofproto == ofproto) { |
1072 | return xbridge; | |
1073 | } | |
1074 | } | |
1075 | return NULL; | |
1076 | } | |
1077 | ||
1078 | static struct xbundle * | |
84f0f298 | 1079 | xbundle_lookup(struct xlate_cfg *xcfg, const struct ofbundle *ofbundle) |
46c88433 | 1080 | { |
84f0f298 | 1081 | struct hmap *xbundles; |
46c88433 EJ |
1082 | struct xbundle *xbundle; |
1083 | ||
84f0f298 | 1084 | if (!ofbundle || !xcfg) { |
5e6af486 EJ |
1085 | return NULL; |
1086 | } | |
1087 | ||
84f0f298 RW |
1088 | xbundles = &xcfg->xbundles; |
1089 | ||
46c88433 | 1090 | HMAP_FOR_EACH_IN_BUCKET (xbundle, hmap_node, hash_pointer(ofbundle, 0), |
84f0f298 | 1091 | xbundles) { |
46c88433 EJ |
1092 | if (xbundle->ofbundle == ofbundle) { |
1093 | return xbundle; | |
1094 | } | |
1095 | } | |
1096 | return NULL; | |
1097 | } | |
1098 | ||
1099 | static struct xport * | |
84f0f298 | 1100 | xport_lookup(struct xlate_cfg *xcfg, const struct ofport_dpif *ofport) |
46c88433 | 1101 | { |
84f0f298 | 1102 | struct hmap *xports; |
46c88433 EJ |
1103 | struct xport *xport; |
1104 | ||
84f0f298 | 1105 | if (!ofport || !xcfg) { |
5e6af486 EJ |
1106 | return NULL; |
1107 | } | |
1108 | ||
84f0f298 RW |
1109 | xports = &xcfg->xports; |
1110 | ||
46c88433 | 1111 | HMAP_FOR_EACH_IN_BUCKET (xport, hmap_node, hash_pointer(ofport, 0), |
84f0f298 | 1112 | xports) { |
46c88433 EJ |
1113 | if (xport->ofport == ofport) { |
1114 | return xport; | |
1115 | } | |
1116 | } | |
1117 | return NULL; | |
1118 | } | |
1119 | ||
40085e56 EJ |
1120 | static struct stp_port * |
1121 | xport_get_stp_port(const struct xport *xport) | |
1122 | { | |
92cf817b | 1123 | return xport->xbridge->stp && xport->stp_port_no != -1 |
40085e56 EJ |
1124 | ? stp_get_port(xport->xbridge->stp, xport->stp_port_no) |
1125 | : NULL; | |
1126 | } | |
9d189a50 | 1127 | |
0d1cee12 | 1128 | static bool |
9d189a50 EJ |
1129 | xport_stp_learn_state(const struct xport *xport) |
1130 | { | |
40085e56 EJ |
1131 | struct stp_port *sp = xport_get_stp_port(xport); |
1132 | return stp_learn_in_state(sp ? stp_port_get_state(sp) : STP_DISABLED); | |
9d189a50 EJ |
1133 | } |
1134 | ||
1135 | static bool | |
1136 | xport_stp_forward_state(const struct xport *xport) | |
1137 | { | |
40085e56 EJ |
1138 | struct stp_port *sp = xport_get_stp_port(xport); |
1139 | return stp_forward_in_state(sp ? stp_port_get_state(sp) : STP_DISABLED); | |
9d189a50 EJ |
1140 | } |
1141 | ||
0d1cee12 | 1142 | static bool |
bacdb85a | 1143 | xport_stp_should_forward_bpdu(const struct xport *xport) |
0d1cee12 K |
1144 | { |
1145 | struct stp_port *sp = xport_get_stp_port(xport); | |
bacdb85a | 1146 | return stp_should_forward_bpdu(sp ? stp_port_get_state(sp) : STP_DISABLED); |
0d1cee12 K |
1147 | } |
1148 | ||
9d189a50 EJ |
1149 | /* Returns true if STP should process 'flow'. Sets fields in 'wc' that |
1150 | * were used to make the determination.*/ | |
1151 | static bool | |
1152 | stp_should_process_flow(const struct flow *flow, struct flow_wildcards *wc) | |
1153 | { | |
bbbca389 | 1154 | /* is_stp() also checks dl_type, but dl_type is always set in 'wc'. */ |
9d189a50 | 1155 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); |
bbbca389 | 1156 | return is_stp(flow); |
9d189a50 EJ |
1157 | } |
1158 | ||
1159 | static void | |
1160 | stp_process_packet(const struct xport *xport, const struct ofpbuf *packet) | |
1161 | { | |
40085e56 | 1162 | struct stp_port *sp = xport_get_stp_port(xport); |
9d189a50 | 1163 | struct ofpbuf payload = *packet; |
1f317cb5 | 1164 | struct eth_header *eth = ofpbuf_data(&payload); |
9d189a50 EJ |
1165 | |
1166 | /* Sink packets on ports that have STP disabled when the bridge has | |
1167 | * STP enabled. */ | |
1168 | if (!sp || stp_port_get_state(sp) == STP_DISABLED) { | |
1169 | return; | |
1170 | } | |
1171 | ||
1172 | /* Trim off padding on payload. */ | |
1f317cb5 PS |
1173 | if (ofpbuf_size(&payload) > ntohs(eth->eth_type) + ETH_HEADER_LEN) { |
1174 | ofpbuf_set_size(&payload, ntohs(eth->eth_type) + ETH_HEADER_LEN); | |
9d189a50 EJ |
1175 | } |
1176 | ||
1177 | if (ofpbuf_try_pull(&payload, ETH_HEADER_LEN + LLC_HEADER_LEN)) { | |
1f317cb5 | 1178 | stp_received_bpdu(sp, ofpbuf_data(&payload), ofpbuf_size(&payload)); |
9d189a50 EJ |
1179 | } |
1180 | } | |
1181 | ||
f025bcb7 JR |
1182 | static enum rstp_state |
1183 | xport_get_rstp_port_state(const struct xport *xport) | |
9efd308e | 1184 | { |
f025bcb7 JR |
1185 | return xport->rstp_port |
1186 | ? rstp_port_get_state(xport->rstp_port) | |
1187 | : RSTP_DISABLED; | |
9efd308e DV |
1188 | } |
1189 | ||
1190 | static bool | |
1191 | xport_rstp_learn_state(const struct xport *xport) | |
1192 | { | |
f025bcb7 | 1193 | return rstp_learn_in_state(xport_get_rstp_port_state(xport)); |
9efd308e DV |
1194 | } |
1195 | ||
1196 | static bool | |
1197 | xport_rstp_forward_state(const struct xport *xport) | |
1198 | { | |
f025bcb7 | 1199 | return rstp_forward_in_state(xport_get_rstp_port_state(xport)); |
9efd308e DV |
1200 | } |
1201 | ||
1202 | static bool | |
1203 | xport_rstp_should_manage_bpdu(const struct xport *xport) | |
1204 | { | |
f025bcb7 | 1205 | return rstp_should_manage_bpdu(xport_get_rstp_port_state(xport)); |
9efd308e DV |
1206 | } |
1207 | ||
1208 | static void | |
1209 | rstp_process_packet(const struct xport *xport, const struct ofpbuf *packet) | |
1210 | { | |
9efd308e DV |
1211 | struct ofpbuf payload = *packet; |
1212 | struct eth_header *eth = ofpbuf_data(&payload); | |
1213 | ||
f025bcb7 JR |
1214 | /* Sink packets on ports that have no RSTP. */ |
1215 | if (!xport->rstp_port) { | |
9efd308e DV |
1216 | return; |
1217 | } | |
1218 | ||
1219 | /* Trim off padding on payload. */ | |
1220 | if (ofpbuf_size(&payload) > ntohs(eth->eth_type) + ETH_HEADER_LEN) { | |
1221 | ofpbuf_set_size(&payload, ntohs(eth->eth_type) + ETH_HEADER_LEN); | |
1222 | } | |
1223 | ||
1224 | if (ofpbuf_try_pull(&payload, ETH_HEADER_LEN + LLC_HEADER_LEN)) { | |
f025bcb7 JR |
1225 | rstp_port_received_bpdu(xport->rstp_port, ofpbuf_data(&payload), |
1226 | ofpbuf_size(&payload)); | |
9efd308e DV |
1227 | } |
1228 | } | |
1229 | ||
46c88433 EJ |
1230 | static struct xport * |
1231 | get_ofp_port(const struct xbridge *xbridge, ofp_port_t ofp_port) | |
1232 | { | |
1233 | struct xport *xport; | |
1234 | ||
1235 | HMAP_FOR_EACH_IN_BUCKET (xport, ofp_node, hash_ofp_port(ofp_port), | |
1236 | &xbridge->xports) { | |
1237 | if (xport->ofp_port == ofp_port) { | |
1238 | return xport; | |
1239 | } | |
1240 | } | |
1241 | return NULL; | |
1242 | } | |
1243 | ||
1244 | static odp_port_t | |
1245 | ofp_port_to_odp_port(const struct xbridge *xbridge, ofp_port_t ofp_port) | |
1246 | { | |
1247 | const struct xport *xport = get_ofp_port(xbridge, ofp_port); | |
1248 | return xport ? xport->odp_port : ODPP_NONE; | |
1249 | } | |
1250 | ||
dd8cd4b4 SH |
1251 | static bool |
1252 | odp_port_is_alive(const struct xlate_ctx *ctx, ofp_port_t ofp_port) | |
1253 | { | |
086fa873 BP |
1254 | struct xport *xport = get_ofp_port(ctx->xbridge, ofp_port); |
1255 | return xport && xport->may_enable; | |
dd8cd4b4 SH |
1256 | } |
1257 | ||
1e684d7d | 1258 | static struct ofputil_bucket * |
dd8cd4b4 SH |
1259 | group_first_live_bucket(const struct xlate_ctx *, const struct group_dpif *, |
1260 | int depth); | |
1261 | ||
1262 | static bool | |
1263 | group_is_alive(const struct xlate_ctx *ctx, uint32_t group_id, int depth) | |
1264 | { | |
1265 | struct group_dpif *group; | |
dd8cd4b4 | 1266 | |
dc25893e AZ |
1267 | if (group_dpif_lookup(ctx->xbridge->ofproto, group_id, &group)) { |
1268 | struct ofputil_bucket *bucket; | |
dd8cd4b4 | 1269 | |
dc25893e AZ |
1270 | bucket = group_first_live_bucket(ctx, group, depth); |
1271 | group_dpif_unref(group); | |
1272 | return bucket == NULL; | |
1273 | } | |
dd8cd4b4 | 1274 | |
dc25893e | 1275 | return false; |
dd8cd4b4 SH |
1276 | } |
1277 | ||
1278 | #define MAX_LIVENESS_RECURSION 128 /* Arbitrary limit */ | |
1279 | ||
1280 | static bool | |
1281 | bucket_is_alive(const struct xlate_ctx *ctx, | |
1e684d7d | 1282 | struct ofputil_bucket *bucket, int depth) |
dd8cd4b4 SH |
1283 | { |
1284 | if (depth >= MAX_LIVENESS_RECURSION) { | |
1285 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); | |
1286 | ||
1287 | VLOG_WARN_RL(&rl, "bucket chaining exceeded %d links", | |
1288 | MAX_LIVENESS_RECURSION); | |
1289 | return false; | |
1290 | } | |
1291 | ||
fdb1999b AZ |
1292 | return (!ofputil_bucket_has_liveness(bucket) |
1293 | || (bucket->watch_port != OFPP_ANY | |
1294 | && odp_port_is_alive(ctx, bucket->watch_port)) | |
1295 | || (bucket->watch_group != OFPG_ANY | |
1296 | && group_is_alive(ctx, bucket->watch_group, depth + 1))); | |
dd8cd4b4 SH |
1297 | } |
1298 | ||
1e684d7d | 1299 | static struct ofputil_bucket * |
dd8cd4b4 SH |
1300 | group_first_live_bucket(const struct xlate_ctx *ctx, |
1301 | const struct group_dpif *group, int depth) | |
1302 | { | |
1303 | struct ofputil_bucket *bucket; | |
1304 | const struct list *buckets; | |
1305 | ||
1306 | group_dpif_get_buckets(group, &buckets); | |
1307 | LIST_FOR_EACH (bucket, list_node, buckets) { | |
1308 | if (bucket_is_alive(ctx, bucket, depth)) { | |
1309 | return bucket; | |
1310 | } | |
1311 | } | |
1312 | ||
1313 | return NULL; | |
1314 | } | |
1315 | ||
1e684d7d | 1316 | static struct ofputil_bucket * |
fe7e5749 SH |
1317 | group_best_live_bucket(const struct xlate_ctx *ctx, |
1318 | const struct group_dpif *group, | |
1319 | uint32_t basis) | |
1320 | { | |
1e684d7d | 1321 | struct ofputil_bucket *best_bucket = NULL; |
fe7e5749 SH |
1322 | uint32_t best_score = 0; |
1323 | int i = 0; | |
1324 | ||
1e684d7d | 1325 | struct ofputil_bucket *bucket; |
fe7e5749 SH |
1326 | const struct list *buckets; |
1327 | ||
1328 | group_dpif_get_buckets(group, &buckets); | |
1329 | LIST_FOR_EACH (bucket, list_node, buckets) { | |
1330 | if (bucket_is_alive(ctx, bucket, 0)) { | |
7cb279c2 | 1331 | uint32_t score = (hash_int(i, basis) & 0xffff) * bucket->weight; |
fe7e5749 SH |
1332 | if (score >= best_score) { |
1333 | best_bucket = bucket; | |
1334 | best_score = score; | |
1335 | } | |
1336 | } | |
1337 | i++; | |
1338 | } | |
1339 | ||
1340 | return best_bucket; | |
1341 | } | |
1342 | ||
9583bc14 | 1343 | static bool |
46c88433 | 1344 | xbundle_trunks_vlan(const struct xbundle *bundle, uint16_t vlan) |
9583bc14 EJ |
1345 | { |
1346 | return (bundle->vlan_mode != PORT_VLAN_ACCESS | |
1347 | && (!bundle->trunks || bitmap_is_set(bundle->trunks, vlan))); | |
1348 | } | |
1349 | ||
1350 | static bool | |
46c88433 EJ |
1351 | xbundle_includes_vlan(const struct xbundle *xbundle, uint16_t vlan) |
1352 | { | |
1353 | return vlan == xbundle->vlan || xbundle_trunks_vlan(xbundle, vlan); | |
1354 | } | |
1355 | ||
1356 | static mirror_mask_t | |
1357 | xbundle_mirror_out(const struct xbridge *xbridge, struct xbundle *xbundle) | |
1358 | { | |
1359 | return xbundle != &ofpp_none_bundle | |
1360 | ? mirror_bundle_out(xbridge->mbridge, xbundle->ofbundle) | |
1361 | : 0; | |
1362 | } | |
1363 | ||
1364 | static mirror_mask_t | |
1365 | xbundle_mirror_src(const struct xbridge *xbridge, struct xbundle *xbundle) | |
9583bc14 | 1366 | { |
46c88433 EJ |
1367 | return xbundle != &ofpp_none_bundle |
1368 | ? mirror_bundle_src(xbridge->mbridge, xbundle->ofbundle) | |
1369 | : 0; | |
9583bc14 EJ |
1370 | } |
1371 | ||
46c88433 EJ |
1372 | static mirror_mask_t |
1373 | xbundle_mirror_dst(const struct xbridge *xbridge, struct xbundle *xbundle) | |
9583bc14 | 1374 | { |
46c88433 EJ |
1375 | return xbundle != &ofpp_none_bundle |
1376 | ? mirror_bundle_dst(xbridge->mbridge, xbundle->ofbundle) | |
1377 | : 0; | |
1378 | } | |
1379 | ||
1380 | static struct xbundle * | |
1381 | lookup_input_bundle(const struct xbridge *xbridge, ofp_port_t in_port, | |
1382 | bool warn, struct xport **in_xportp) | |
1383 | { | |
1384 | struct xport *xport; | |
9583bc14 EJ |
1385 | |
1386 | /* Find the port and bundle for the received packet. */ | |
46c88433 EJ |
1387 | xport = get_ofp_port(xbridge, in_port); |
1388 | if (in_xportp) { | |
1389 | *in_xportp = xport; | |
9583bc14 | 1390 | } |
46c88433 EJ |
1391 | if (xport && xport->xbundle) { |
1392 | return xport->xbundle; | |
9583bc14 EJ |
1393 | } |
1394 | ||
6362203b YT |
1395 | /* Special-case OFPP_NONE (OF1.0) and OFPP_CONTROLLER (OF1.1+), |
1396 | * which a controller may use as the ingress port for traffic that | |
1397 | * it is sourcing. */ | |
1398 | if (in_port == OFPP_CONTROLLER || in_port == OFPP_NONE) { | |
9583bc14 EJ |
1399 | return &ofpp_none_bundle; |
1400 | } | |
1401 | ||
1402 | /* Odd. A few possible reasons here: | |
1403 | * | |
1404 | * - We deleted a port but there are still a few packets queued up | |
1405 | * from it. | |
1406 | * | |
1407 | * - Someone externally added a port (e.g. "ovs-dpctl add-if") that | |
1408 | * we don't know about. | |
1409 | * | |
1410 | * - The ofproto client didn't configure the port as part of a bundle. | |
1411 | * This is particularly likely to happen if a packet was received on the | |
1412 | * port after it was created, but before the client had a chance to | |
1413 | * configure its bundle. | |
1414 | */ | |
1415 | if (warn) { | |
1416 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
1417 | ||
1418 | VLOG_WARN_RL(&rl, "bridge %s: received packet on unknown " | |
46c88433 | 1419 | "port %"PRIu16, xbridge->name, in_port); |
9583bc14 EJ |
1420 | } |
1421 | return NULL; | |
1422 | } | |
1423 | ||
1424 | static void | |
1425 | add_mirror_actions(struct xlate_ctx *ctx, const struct flow *orig_flow) | |
1426 | { | |
46c88433 | 1427 | const struct xbridge *xbridge = ctx->xbridge; |
9583bc14 | 1428 | mirror_mask_t mirrors; |
46c88433 | 1429 | struct xbundle *in_xbundle; |
9583bc14 EJ |
1430 | uint16_t vlan; |
1431 | uint16_t vid; | |
cdf5d3a5 EJ |
1432 | |
1433 | mirrors = ctx->xout->mirrors; | |
1434 | ctx->xout->mirrors = 0; | |
9583bc14 | 1435 | |
46c88433 EJ |
1436 | in_xbundle = lookup_input_bundle(xbridge, orig_flow->in_port.ofp_port, |
1437 | ctx->xin->packet != NULL, NULL); | |
1438 | if (!in_xbundle) { | |
9583bc14 EJ |
1439 | return; |
1440 | } | |
46c88433 | 1441 | mirrors |= xbundle_mirror_src(xbridge, in_xbundle); |
9583bc14 EJ |
1442 | |
1443 | /* Drop frames on bundles reserved for mirroring. */ | |
46c88433 | 1444 | if (xbundle_mirror_out(xbridge, in_xbundle)) { |
9583bc14 EJ |
1445 | if (ctx->xin->packet != NULL) { |
1446 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
1447 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet received on port " | |
1448 | "%s, which is reserved exclusively for mirroring", | |
46c88433 | 1449 | ctx->xbridge->name, in_xbundle->name); |
9583bc14 | 1450 | } |
cc377352 | 1451 | ofpbuf_clear(ctx->xout->odp_actions); |
9583bc14 EJ |
1452 | return; |
1453 | } | |
1454 | ||
1455 | /* Check VLAN. */ | |
1456 | vid = vlan_tci_to_vid(orig_flow->vlan_tci); | |
46c88433 | 1457 | if (!input_vid_is_valid(vid, in_xbundle, ctx->xin->packet != NULL)) { |
9583bc14 EJ |
1458 | return; |
1459 | } | |
46c88433 | 1460 | vlan = input_vid_to_vlan(in_xbundle, vid); |
9583bc14 | 1461 | |
9583bc14 EJ |
1462 | if (!mirrors) { |
1463 | return; | |
1464 | } | |
1465 | ||
1466 | /* Restore the original packet before adding the mirror actions. */ | |
1467 | ctx->xin->flow = *orig_flow; | |
1468 | ||
1469 | while (mirrors) { | |
ec7ceaed EJ |
1470 | mirror_mask_t dup_mirrors; |
1471 | struct ofbundle *out; | |
1472 | unsigned long *vlans; | |
1473 | bool vlan_mirrored; | |
1474 | bool has_mirror; | |
1475 | int out_vlan; | |
1476 | ||
4b6ab2b0 | 1477 | has_mirror = mirror_get(xbridge->mbridge, raw_ctz(mirrors), |
ec7ceaed EJ |
1478 | &vlans, &dup_mirrors, &out, &out_vlan); |
1479 | ovs_assert(has_mirror); | |
1480 | ||
1481 | if (vlans) { | |
9583bc14 EJ |
1482 | ctx->xout->wc.masks.vlan_tci |= htons(VLAN_CFI | VLAN_VID_MASK); |
1483 | } | |
ec7ceaed EJ |
1484 | vlan_mirrored = !vlans || bitmap_is_set(vlans, vlan); |
1485 | free(vlans); | |
9583bc14 | 1486 | |
ec7ceaed | 1487 | if (!vlan_mirrored) { |
9583bc14 EJ |
1488 | mirrors = zero_rightmost_1bit(mirrors); |
1489 | continue; | |
1490 | } | |
1491 | ||
ec7ceaed EJ |
1492 | mirrors &= ~dup_mirrors; |
1493 | ctx->xout->mirrors |= dup_mirrors; | |
1494 | if (out) { | |
84f0f298 RW |
1495 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
1496 | struct xbundle *out_xbundle = xbundle_lookup(xcfg, out); | |
46c88433 EJ |
1497 | if (out_xbundle) { |
1498 | output_normal(ctx, out_xbundle, vlan); | |
1499 | } | |
ec7ceaed | 1500 | } else if (vlan != out_vlan |
9583bc14 | 1501 | && !eth_addr_is_reserved(orig_flow->dl_dst)) { |
46c88433 | 1502 | struct xbundle *xbundle; |
9583bc14 | 1503 | |
46c88433 EJ |
1504 | LIST_FOR_EACH (xbundle, list_node, &xbridge->xbundles) { |
1505 | if (xbundle_includes_vlan(xbundle, out_vlan) | |
1506 | && !xbundle_mirror_out(xbridge, xbundle)) { | |
1507 | output_normal(ctx, xbundle, out_vlan); | |
9583bc14 EJ |
1508 | } |
1509 | } | |
1510 | } | |
1511 | } | |
1512 | } | |
1513 | ||
1514 | /* Given 'vid', the VID obtained from the 802.1Q header that was received as | |
46c88433 | 1515 | * part of a packet (specify 0 if there was no 802.1Q header), and 'in_xbundle', |
9583bc14 EJ |
1516 | * the bundle on which the packet was received, returns the VLAN to which the |
1517 | * packet belongs. | |
1518 | * | |
1519 | * Both 'vid' and the return value are in the range 0...4095. */ | |
1520 | static uint16_t | |
46c88433 | 1521 | input_vid_to_vlan(const struct xbundle *in_xbundle, uint16_t vid) |
9583bc14 | 1522 | { |
46c88433 | 1523 | switch (in_xbundle->vlan_mode) { |
9583bc14 | 1524 | case PORT_VLAN_ACCESS: |
46c88433 | 1525 | return in_xbundle->vlan; |
9583bc14 EJ |
1526 | break; |
1527 | ||
1528 | case PORT_VLAN_TRUNK: | |
1529 | return vid; | |
1530 | ||
1531 | case PORT_VLAN_NATIVE_UNTAGGED: | |
1532 | case PORT_VLAN_NATIVE_TAGGED: | |
46c88433 | 1533 | return vid ? vid : in_xbundle->vlan; |
9583bc14 EJ |
1534 | |
1535 | default: | |
428b2edd | 1536 | OVS_NOT_REACHED(); |
9583bc14 EJ |
1537 | } |
1538 | } | |
1539 | ||
46c88433 | 1540 | /* Checks whether a packet with the given 'vid' may ingress on 'in_xbundle'. |
9583bc14 EJ |
1541 | * If so, returns true. Otherwise, returns false and, if 'warn' is true, logs |
1542 | * a warning. | |
1543 | * | |
1544 | * 'vid' should be the VID obtained from the 802.1Q header that was received as | |
1545 | * part of a packet (specify 0 if there was no 802.1Q header), in the range | |
1546 | * 0...4095. */ | |
1547 | static bool | |
46c88433 | 1548 | input_vid_is_valid(uint16_t vid, struct xbundle *in_xbundle, bool warn) |
9583bc14 EJ |
1549 | { |
1550 | /* Allow any VID on the OFPP_NONE port. */ | |
46c88433 | 1551 | if (in_xbundle == &ofpp_none_bundle) { |
9583bc14 EJ |
1552 | return true; |
1553 | } | |
1554 | ||
46c88433 | 1555 | switch (in_xbundle->vlan_mode) { |
9583bc14 EJ |
1556 | case PORT_VLAN_ACCESS: |
1557 | if (vid) { | |
1558 | if (warn) { | |
1559 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
46c88433 | 1560 | VLOG_WARN_RL(&rl, "dropping VLAN %"PRIu16" tagged " |
9583bc14 | 1561 | "packet received on port %s configured as VLAN " |
46c88433 EJ |
1562 | "%"PRIu16" access port", vid, in_xbundle->name, |
1563 | in_xbundle->vlan); | |
9583bc14 EJ |
1564 | } |
1565 | return false; | |
1566 | } | |
1567 | return true; | |
1568 | ||
1569 | case PORT_VLAN_NATIVE_UNTAGGED: | |
1570 | case PORT_VLAN_NATIVE_TAGGED: | |
1571 | if (!vid) { | |
1572 | /* Port must always carry its native VLAN. */ | |
1573 | return true; | |
1574 | } | |
1575 | /* Fall through. */ | |
1576 | case PORT_VLAN_TRUNK: | |
46c88433 | 1577 | if (!xbundle_includes_vlan(in_xbundle, vid)) { |
9583bc14 EJ |
1578 | if (warn) { |
1579 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
46c88433 | 1580 | VLOG_WARN_RL(&rl, "dropping VLAN %"PRIu16" packet " |
9583bc14 | 1581 | "received on port %s not configured for trunking " |
46c88433 | 1582 | "VLAN %"PRIu16, vid, in_xbundle->name, vid); |
9583bc14 EJ |
1583 | } |
1584 | return false; | |
1585 | } | |
1586 | return true; | |
1587 | ||
1588 | default: | |
428b2edd | 1589 | OVS_NOT_REACHED(); |
9583bc14 EJ |
1590 | } |
1591 | ||
1592 | } | |
1593 | ||
1594 | /* Given 'vlan', the VLAN that a packet belongs to, and | |
46c88433 | 1595 | * 'out_xbundle', a bundle on which the packet is to be output, returns the VID |
9583bc14 EJ |
1596 | * that should be included in the 802.1Q header. (If the return value is 0, |
1597 | * then the 802.1Q header should only be included in the packet if there is a | |
1598 | * nonzero PCP.) | |
1599 | * | |
1600 | * Both 'vlan' and the return value are in the range 0...4095. */ | |
1601 | static uint16_t | |
46c88433 | 1602 | output_vlan_to_vid(const struct xbundle *out_xbundle, uint16_t vlan) |
9583bc14 | 1603 | { |
46c88433 | 1604 | switch (out_xbundle->vlan_mode) { |
9583bc14 EJ |
1605 | case PORT_VLAN_ACCESS: |
1606 | return 0; | |
1607 | ||
1608 | case PORT_VLAN_TRUNK: | |
1609 | case PORT_VLAN_NATIVE_TAGGED: | |
1610 | return vlan; | |
1611 | ||
1612 | case PORT_VLAN_NATIVE_UNTAGGED: | |
46c88433 | 1613 | return vlan == out_xbundle->vlan ? 0 : vlan; |
9583bc14 EJ |
1614 | |
1615 | default: | |
428b2edd | 1616 | OVS_NOT_REACHED(); |
9583bc14 EJ |
1617 | } |
1618 | } | |
1619 | ||
1620 | static void | |
46c88433 | 1621 | output_normal(struct xlate_ctx *ctx, const struct xbundle *out_xbundle, |
9583bc14 EJ |
1622 | uint16_t vlan) |
1623 | { | |
33bf9176 | 1624 | ovs_be16 *flow_tci = &ctx->xin->flow.vlan_tci; |
9583bc14 EJ |
1625 | uint16_t vid; |
1626 | ovs_be16 tci, old_tci; | |
46c88433 | 1627 | struct xport *xport; |
9583bc14 | 1628 | |
46c88433 EJ |
1629 | vid = output_vlan_to_vid(out_xbundle, vlan); |
1630 | if (list_is_empty(&out_xbundle->xports)) { | |
1631 | /* Partially configured bundle with no slaves. Drop the packet. */ | |
1632 | return; | |
1633 | } else if (!out_xbundle->bond) { | |
92c08f09 | 1634 | ctx->use_recirc = false; |
46c88433 EJ |
1635 | xport = CONTAINER_OF(list_front(&out_xbundle->xports), struct xport, |
1636 | bundle_node); | |
9583bc14 | 1637 | } else { |
84f0f298 | 1638 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
54ecb5a2 | 1639 | struct flow_wildcards *wc = &ctx->xout->wc; |
84f0f298 RW |
1640 | struct xlate_recirc *xr = &ctx->recirc; |
1641 | struct ofport_dpif *ofport; | |
adcf00ba AZ |
1642 | |
1643 | if (ctx->xbridge->enable_recirc) { | |
92c08f09 | 1644 | ctx->use_recirc = bond_may_recirc( |
62ac1f20 | 1645 | out_xbundle->bond, &xr->recirc_id, &xr->hash_basis); |
adcf00ba | 1646 | |
92c08f09 | 1647 | if (ctx->use_recirc) { |
adcf00ba | 1648 | /* Only TCP mode uses recirculation. */ |
347bf289 | 1649 | xr->hash_alg = OVS_HASH_ALG_L4; |
adcf00ba | 1650 | bond_update_post_recirc_rules(out_xbundle->bond, false); |
54ecb5a2 AZ |
1651 | |
1652 | /* Recirculation does not require unmasking hash fields. */ | |
1653 | wc = NULL; | |
adcf00ba AZ |
1654 | } |
1655 | } | |
46c88433 | 1656 | |
54ecb5a2 AZ |
1657 | ofport = bond_choose_output_slave(out_xbundle->bond, |
1658 | &ctx->xin->flow, wc, vid); | |
84f0f298 | 1659 | xport = xport_lookup(xcfg, ofport); |
46c88433 EJ |
1660 | |
1661 | if (!xport) { | |
9583bc14 EJ |
1662 | /* No slaves enabled, so drop packet. */ |
1663 | return; | |
1664 | } | |
d6fc5f57 | 1665 | |
b256dc52 JS |
1666 | /* If ctx->xout->use_recirc is set, the main thread will handle stats |
1667 | * accounting for this bond. */ | |
92c08f09 | 1668 | if (!ctx->use_recirc) { |
b256dc52 JS |
1669 | if (ctx->xin->resubmit_stats) { |
1670 | bond_account(out_xbundle->bond, &ctx->xin->flow, vid, | |
1671 | ctx->xin->resubmit_stats->n_bytes); | |
1672 | } | |
1673 | if (ctx->xin->xcache) { | |
1674 | struct xc_entry *entry; | |
1675 | struct flow *flow; | |
1676 | ||
1677 | flow = &ctx->xin->flow; | |
1678 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_BOND); | |
1679 | entry->u.bond.bond = bond_ref(out_xbundle->bond); | |
1680 | entry->u.bond.flow = xmemdup(flow, sizeof *flow); | |
1681 | entry->u.bond.vid = vid; | |
1682 | } | |
d6fc5f57 | 1683 | } |
9583bc14 EJ |
1684 | } |
1685 | ||
33bf9176 | 1686 | old_tci = *flow_tci; |
9583bc14 | 1687 | tci = htons(vid); |
46c88433 | 1688 | if (tci || out_xbundle->use_priority_tags) { |
33bf9176 | 1689 | tci |= *flow_tci & htons(VLAN_PCP_MASK); |
9583bc14 EJ |
1690 | if (tci) { |
1691 | tci |= htons(VLAN_CFI); | |
1692 | } | |
1693 | } | |
33bf9176 | 1694 | *flow_tci = tci; |
9583bc14 | 1695 | |
46c88433 | 1696 | compose_output_action(ctx, xport->ofp_port); |
33bf9176 | 1697 | *flow_tci = old_tci; |
9583bc14 EJ |
1698 | } |
1699 | ||
1700 | /* A VM broadcasts a gratuitous ARP to indicate that it has resumed after | |
1701 | * migration. Older Citrix-patched Linux DomU used gratuitous ARP replies to | |
1702 | * indicate this; newer upstream kernels use gratuitous ARP requests. */ | |
1703 | static bool | |
1704 | is_gratuitous_arp(const struct flow *flow, struct flow_wildcards *wc) | |
1705 | { | |
1706 | if (flow->dl_type != htons(ETH_TYPE_ARP)) { | |
1707 | return false; | |
1708 | } | |
1709 | ||
1710 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); | |
1711 | if (!eth_addr_is_broadcast(flow->dl_dst)) { | |
1712 | return false; | |
1713 | } | |
1714 | ||
1715 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); | |
1716 | if (flow->nw_proto == ARP_OP_REPLY) { | |
1717 | return true; | |
1718 | } else if (flow->nw_proto == ARP_OP_REQUEST) { | |
1719 | memset(&wc->masks.nw_src, 0xff, sizeof wc->masks.nw_src); | |
1720 | memset(&wc->masks.nw_dst, 0xff, sizeof wc->masks.nw_dst); | |
1721 | ||
1722 | return flow->nw_src == flow->nw_dst; | |
1723 | } else { | |
1724 | return false; | |
1725 | } | |
1726 | } | |
1727 | ||
ff69c24a FL |
1728 | /* Determines whether packets in 'flow' within 'xbridge' should be forwarded or |
1729 | * dropped. Returns true if they may be forwarded, false if they should be | |
1730 | * dropped. | |
1731 | * | |
1732 | * 'in_port' must be the xport that corresponds to flow->in_port. | |
1733 | * 'in_port' must be part of a bundle (e.g. in_port->bundle must be nonnull). | |
1734 | * | |
1735 | * 'vlan' must be the VLAN that corresponds to flow->vlan_tci on 'in_port', as | |
1736 | * returned by input_vid_to_vlan(). It must be a valid VLAN for 'in_port', as | |
1737 | * checked by input_vid_is_valid(). | |
1738 | * | |
1739 | * May also add tags to '*tags', although the current implementation only does | |
1740 | * so in one special case. | |
1741 | */ | |
1742 | static bool | |
1743 | is_admissible(struct xlate_ctx *ctx, struct xport *in_port, | |
1744 | uint16_t vlan) | |
1745 | { | |
1746 | struct xbundle *in_xbundle = in_port->xbundle; | |
1747 | const struct xbridge *xbridge = ctx->xbridge; | |
1748 | struct flow *flow = &ctx->xin->flow; | |
1749 | ||
1750 | /* Drop frames for reserved multicast addresses | |
1751 | * only if forward_bpdu option is absent. */ | |
1752 | if (!xbridge->forward_bpdu && eth_addr_is_reserved(flow->dl_dst)) { | |
1753 | xlate_report(ctx, "packet has reserved destination MAC, dropping"); | |
1754 | return false; | |
1755 | } | |
1756 | ||
1757 | if (in_xbundle->bond) { | |
1758 | struct mac_entry *mac; | |
1759 | ||
1760 | switch (bond_check_admissibility(in_xbundle->bond, in_port->ofport, | |
1761 | flow->dl_dst)) { | |
1762 | case BV_ACCEPT: | |
1763 | break; | |
1764 | ||
1765 | case BV_DROP: | |
1766 | xlate_report(ctx, "bonding refused admissibility, dropping"); | |
1767 | return false; | |
1768 | ||
1769 | case BV_DROP_IF_MOVED: | |
1770 | ovs_rwlock_rdlock(&xbridge->ml->rwlock); | |
1771 | mac = mac_learning_lookup(xbridge->ml, flow->dl_src, vlan); | |
1772 | if (mac && mac->port.p != in_xbundle->ofbundle && | |
1773 | (!is_gratuitous_arp(flow, &ctx->xout->wc) | |
1774 | || mac_entry_is_grat_arp_locked(mac))) { | |
1775 | ovs_rwlock_unlock(&xbridge->ml->rwlock); | |
1776 | xlate_report(ctx, "SLB bond thinks this packet looped back, " | |
1777 | "dropping"); | |
1778 | return false; | |
1779 | } | |
1780 | ovs_rwlock_unlock(&xbridge->ml->rwlock); | |
1781 | break; | |
1782 | } | |
1783 | } | |
1784 | ||
1785 | return true; | |
1786 | } | |
1787 | ||
ee047520 BP |
1788 | /* Checks whether a MAC learning update is necessary for MAC learning table |
1789 | * 'ml' given that a packet matching 'flow' was received on 'in_xbundle' in | |
1790 | * 'vlan'. | |
1791 | * | |
1792 | * Most packets processed through the MAC learning table do not actually | |
1793 | * change it in any way. This function requires only a read lock on the MAC | |
1794 | * learning table, so it is much cheaper in this common case. | |
1795 | * | |
1796 | * Keep the code here synchronized with that in update_learning_table__() | |
1797 | * below. */ | |
1798 | static bool | |
1799 | is_mac_learning_update_needed(const struct mac_learning *ml, | |
1800 | const struct flow *flow, | |
1801 | struct flow_wildcards *wc, | |
1802 | int vlan, struct xbundle *in_xbundle) | |
d6fc5f57 | 1803 | OVS_REQ_RDLOCK(ml->rwlock) |
9583bc14 EJ |
1804 | { |
1805 | struct mac_entry *mac; | |
1806 | ||
ee047520 BP |
1807 | if (!mac_learning_may_learn(ml, flow->dl_src, vlan)) { |
1808 | return false; | |
1809 | } | |
1810 | ||
1811 | mac = mac_learning_lookup(ml, flow->dl_src, vlan); | |
1812 | if (!mac || mac_entry_age(ml, mac)) { | |
1813 | return true; | |
9583bc14 EJ |
1814 | } |
1815 | ||
ee047520 BP |
1816 | if (is_gratuitous_arp(flow, wc)) { |
1817 | /* We don't want to learn from gratuitous ARP packets that are | |
1818 | * reflected back over bond slaves so we lock the learning table. */ | |
1819 | if (!in_xbundle->bond) { | |
1820 | return true; | |
1821 | } else if (mac_entry_is_grat_arp_locked(mac)) { | |
1822 | return false; | |
1823 | } | |
1824 | } | |
1825 | ||
1826 | return mac->port.p != in_xbundle->ofbundle; | |
1827 | } | |
1828 | ||
1829 | ||
1830 | /* Updates MAC learning table 'ml' given that a packet matching 'flow' was | |
1831 | * received on 'in_xbundle' in 'vlan'. | |
1832 | * | |
1833 | * This code repeats all the checks in is_mac_learning_update_needed() because | |
1834 | * the lock was released between there and here and thus the MAC learning state | |
1835 | * could have changed. | |
1836 | * | |
1837 | * Keep the code here synchronized with that in is_mac_learning_update_needed() | |
1838 | * above. */ | |
1839 | static void | |
1840 | update_learning_table__(const struct xbridge *xbridge, | |
1841 | const struct flow *flow, struct flow_wildcards *wc, | |
1842 | int vlan, struct xbundle *in_xbundle) | |
d6fc5f57 | 1843 | OVS_REQ_WRLOCK(xbridge->ml->rwlock) |
ee047520 BP |
1844 | { |
1845 | struct mac_entry *mac; | |
1846 | ||
46c88433 | 1847 | if (!mac_learning_may_learn(xbridge->ml, flow->dl_src, vlan)) { |
ee047520 | 1848 | return; |
9583bc14 EJ |
1849 | } |
1850 | ||
46c88433 | 1851 | mac = mac_learning_insert(xbridge->ml, flow->dl_src, vlan); |
9583bc14 EJ |
1852 | if (is_gratuitous_arp(flow, wc)) { |
1853 | /* We don't want to learn from gratuitous ARP packets that are | |
1854 | * reflected back over bond slaves so we lock the learning table. */ | |
46c88433 | 1855 | if (!in_xbundle->bond) { |
9583bc14 EJ |
1856 | mac_entry_set_grat_arp_lock(mac); |
1857 | } else if (mac_entry_is_grat_arp_locked(mac)) { | |
ee047520 | 1858 | return; |
9583bc14 EJ |
1859 | } |
1860 | } | |
1861 | ||
30618594 | 1862 | if (mac->port.p != in_xbundle->ofbundle) { |
9583bc14 EJ |
1863 | /* The log messages here could actually be useful in debugging, |
1864 | * so keep the rate limit relatively high. */ | |
1865 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(30, 300); | |
ee047520 | 1866 | |
9583bc14 EJ |
1867 | VLOG_DBG_RL(&rl, "bridge %s: learned that "ETH_ADDR_FMT" is " |
1868 | "on port %s in VLAN %d", | |
46c88433 EJ |
1869 | xbridge->name, ETH_ADDR_ARGS(flow->dl_src), |
1870 | in_xbundle->name, vlan); | |
9583bc14 | 1871 | |
46c88433 | 1872 | mac->port.p = in_xbundle->ofbundle; |
30618594 | 1873 | mac_learning_changed(xbridge->ml); |
9583bc14 | 1874 | } |
ee047520 BP |
1875 | } |
1876 | ||
1877 | static void | |
1878 | update_learning_table(const struct xbridge *xbridge, | |
1879 | const struct flow *flow, struct flow_wildcards *wc, | |
1880 | int vlan, struct xbundle *in_xbundle) | |
1881 | { | |
1882 | bool need_update; | |
1883 | ||
1884 | /* Don't learn the OFPP_NONE port. */ | |
1885 | if (in_xbundle == &ofpp_none_bundle) { | |
1886 | return; | |
1887 | } | |
1888 | ||
1889 | /* First try the common case: no change to MAC learning table. */ | |
1890 | ovs_rwlock_rdlock(&xbridge->ml->rwlock); | |
1891 | need_update = is_mac_learning_update_needed(xbridge->ml, flow, wc, vlan, | |
1892 | in_xbundle); | |
509c0149 | 1893 | ovs_rwlock_unlock(&xbridge->ml->rwlock); |
ee047520 BP |
1894 | |
1895 | if (need_update) { | |
1896 | /* Slow path: MAC learning table might need an update. */ | |
1897 | ovs_rwlock_wrlock(&xbridge->ml->rwlock); | |
1898 | update_learning_table__(xbridge, flow, wc, vlan, in_xbundle); | |
1899 | ovs_rwlock_unlock(&xbridge->ml->rwlock); | |
1900 | } | |
9583bc14 EJ |
1901 | } |
1902 | ||
86e2dcdd FL |
1903 | /* Updates multicast snooping table 'ms' given that a packet matching 'flow' |
1904 | * was received on 'in_xbundle' in 'vlan' and is either Report or Query. */ | |
1905 | static void | |
1906 | update_mcast_snooping_table__(const struct xbridge *xbridge, | |
1907 | const struct flow *flow, | |
1908 | struct mcast_snooping *ms, | |
1909 | ovs_be32 ip4, int vlan, | |
1910 | struct xbundle *in_xbundle) | |
1911 | OVS_REQ_WRLOCK(ms->rwlock) | |
1912 | { | |
1913 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(60, 30); | |
1914 | ||
1915 | switch (ntohs(flow->tp_src)) { | |
1916 | case IGMP_HOST_MEMBERSHIP_REPORT: | |
1917 | case IGMPV2_HOST_MEMBERSHIP_REPORT: | |
1918 | if (mcast_snooping_add_group(ms, ip4, vlan, in_xbundle->ofbundle)) { | |
1919 | VLOG_DBG_RL(&rl, "bridge %s: multicast snooping learned that " | |
1920 | IP_FMT" is on port %s in VLAN %d", | |
1921 | xbridge->name, IP_ARGS(ip4), in_xbundle->name, vlan); | |
1922 | } | |
1923 | break; | |
1924 | case IGMP_HOST_LEAVE_MESSAGE: | |
1925 | if (mcast_snooping_leave_group(ms, ip4, vlan, in_xbundle->ofbundle)) { | |
1926 | VLOG_DBG_RL(&rl, "bridge %s: multicast snooping leaving " | |
1927 | IP_FMT" is on port %s in VLAN %d", | |
1928 | xbridge->name, IP_ARGS(ip4), in_xbundle->name, vlan); | |
1929 | } | |
1930 | break; | |
1931 | case IGMP_HOST_MEMBERSHIP_QUERY: | |
1932 | if (flow->nw_src && mcast_snooping_add_mrouter(ms, vlan, | |
1933 | in_xbundle->ofbundle)) { | |
1934 | VLOG_DBG_RL(&rl, "bridge %s: multicast snooping query from " | |
1935 | IP_FMT" is on port %s in VLAN %d", | |
1936 | xbridge->name, IP_ARGS(flow->nw_src), | |
1937 | in_xbundle->name, vlan); | |
1938 | } | |
1939 | break; | |
1940 | } | |
1941 | } | |
1942 | ||
1943 | /* Updates multicast snooping table 'ms' given that a packet matching 'flow' | |
1944 | * was received on 'in_xbundle' in 'vlan'. */ | |
1945 | static void | |
1946 | update_mcast_snooping_table(const struct xbridge *xbridge, | |
1947 | const struct flow *flow, int vlan, | |
1948 | struct xbundle *in_xbundle) | |
1949 | { | |
1950 | struct mcast_snooping *ms = xbridge->ms; | |
1951 | struct xlate_cfg *xcfg; | |
1952 | struct xbundle *mcast_xbundle; | |
1953 | struct mcast_fport_bundle *fport; | |
1954 | ||
1955 | /* Don't learn the OFPP_NONE port. */ | |
1956 | if (in_xbundle == &ofpp_none_bundle) { | |
1957 | return; | |
1958 | } | |
1959 | ||
1960 | /* Don't learn from flood ports */ | |
1961 | mcast_xbundle = NULL; | |
1962 | ovs_rwlock_wrlock(&ms->rwlock); | |
1963 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
1964 | LIST_FOR_EACH(fport, fport_node, &ms->fport_list) { | |
1965 | mcast_xbundle = xbundle_lookup(xcfg, fport->port); | |
1966 | if (mcast_xbundle == in_xbundle) { | |
1967 | break; | |
1968 | } | |
1969 | } | |
1970 | ||
1971 | if (!mcast_xbundle || mcast_xbundle != in_xbundle) { | |
1972 | update_mcast_snooping_table__(xbridge, flow, ms, flow->igmp_group_ip4, | |
1973 | vlan, in_xbundle); | |
1974 | } | |
1975 | ovs_rwlock_unlock(&ms->rwlock); | |
1976 | } | |
1977 | ||
1978 | /* send the packet to ports having the multicast group learned */ | |
1979 | static void | |
1980 | xlate_normal_mcast_send_group(struct xlate_ctx *ctx, | |
1981 | struct mcast_snooping *ms OVS_UNUSED, | |
1982 | struct mcast_group *grp, | |
1983 | struct xbundle *in_xbundle, uint16_t vlan) | |
1984 | OVS_REQ_RDLOCK(ms->rwlock) | |
1985 | { | |
1986 | struct xlate_cfg *xcfg; | |
1987 | struct mcast_group_bundle *b; | |
1988 | struct xbundle *mcast_xbundle; | |
1989 | ||
1990 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
1991 | LIST_FOR_EACH(b, bundle_node, &grp->bundle_lru) { | |
1992 | mcast_xbundle = xbundle_lookup(xcfg, b->port); | |
1993 | if (mcast_xbundle && mcast_xbundle != in_xbundle) { | |
1994 | xlate_report(ctx, "forwarding to mcast group port"); | |
1995 | output_normal(ctx, mcast_xbundle, vlan); | |
1996 | } else if (!mcast_xbundle) { | |
1997 | xlate_report(ctx, "mcast group port is unknown, dropping"); | |
1998 | } else { | |
1999 | xlate_report(ctx, "mcast group port is input port, dropping"); | |
2000 | } | |
2001 | } | |
2002 | } | |
2003 | ||
2004 | /* send the packet to ports connected to multicast routers */ | |
2005 | static void | |
2006 | xlate_normal_mcast_send_mrouters(struct xlate_ctx *ctx, | |
2007 | struct mcast_snooping *ms, | |
2008 | struct xbundle *in_xbundle, uint16_t vlan) | |
2009 | OVS_REQ_RDLOCK(ms->rwlock) | |
2010 | { | |
2011 | struct xlate_cfg *xcfg; | |
2012 | struct mcast_mrouter_bundle *mrouter; | |
2013 | struct xbundle *mcast_xbundle; | |
2014 | ||
2015 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
2016 | LIST_FOR_EACH(mrouter, mrouter_node, &ms->mrouter_lru) { | |
2017 | mcast_xbundle = xbundle_lookup(xcfg, mrouter->port); | |
2018 | if (mcast_xbundle && mcast_xbundle != in_xbundle) { | |
2019 | xlate_report(ctx, "forwarding to mcast router port"); | |
2020 | output_normal(ctx, mcast_xbundle, vlan); | |
2021 | } else if (!mcast_xbundle) { | |
2022 | xlate_report(ctx, "mcast router port is unknown, dropping"); | |
2023 | } else { | |
2024 | xlate_report(ctx, "mcast router port is input port, dropping"); | |
2025 | } | |
2026 | } | |
2027 | } | |
2028 | ||
2029 | /* send the packet to ports flagged to be flooded */ | |
2030 | static void | |
2031 | xlate_normal_mcast_send_fports(struct xlate_ctx *ctx, | |
2032 | struct mcast_snooping *ms, | |
2033 | struct xbundle *in_xbundle, uint16_t vlan) | |
2034 | OVS_REQ_RDLOCK(ms->rwlock) | |
2035 | { | |
2036 | struct xlate_cfg *xcfg; | |
2037 | struct mcast_fport_bundle *fport; | |
2038 | struct xbundle *mcast_xbundle; | |
2039 | ||
2040 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
2041 | LIST_FOR_EACH(fport, fport_node, &ms->fport_list) { | |
2042 | mcast_xbundle = xbundle_lookup(xcfg, fport->port); | |
2043 | if (mcast_xbundle && mcast_xbundle != in_xbundle) { | |
2044 | xlate_report(ctx, "forwarding to mcast flood port"); | |
2045 | output_normal(ctx, mcast_xbundle, vlan); | |
2046 | } else if (!mcast_xbundle) { | |
2047 | xlate_report(ctx, "mcast flood port is unknown, dropping"); | |
2048 | } else { | |
2049 | xlate_report(ctx, "mcast flood port is input port, dropping"); | |
2050 | } | |
2051 | } | |
2052 | } | |
2053 | ||
682800a4 FL |
2054 | static void |
2055 | xlate_normal_flood(struct xlate_ctx *ctx, struct xbundle *in_xbundle, | |
2056 | uint16_t vlan) | |
2057 | { | |
2058 | struct xbundle *xbundle; | |
2059 | ||
2060 | LIST_FOR_EACH (xbundle, list_node, &ctx->xbridge->xbundles) { | |
2061 | if (xbundle != in_xbundle | |
2062 | && xbundle_includes_vlan(xbundle, vlan) | |
2063 | && xbundle->floodable | |
2064 | && !xbundle_mirror_out(ctx->xbridge, xbundle)) { | |
2065 | output_normal(ctx, xbundle, vlan); | |
2066 | } | |
2067 | } | |
2068 | ctx->xout->nf_output_iface = NF_OUT_FLOOD; | |
2069 | } | |
2070 | ||
9583bc14 EJ |
2071 | static void |
2072 | xlate_normal(struct xlate_ctx *ctx) | |
2073 | { | |
33bf9176 BP |
2074 | struct flow_wildcards *wc = &ctx->xout->wc; |
2075 | struct flow *flow = &ctx->xin->flow; | |
46c88433 EJ |
2076 | struct xbundle *in_xbundle; |
2077 | struct xport *in_port; | |
9583bc14 | 2078 | struct mac_entry *mac; |
d6d5bbc9 | 2079 | void *mac_port; |
9583bc14 EJ |
2080 | uint16_t vlan; |
2081 | uint16_t vid; | |
2082 | ||
2083 | ctx->xout->has_normal = true; | |
2084 | ||
33bf9176 BP |
2085 | memset(&wc->masks.dl_src, 0xff, sizeof wc->masks.dl_src); |
2086 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); | |
1dd35f8a | 2087 | wc->masks.vlan_tci |= htons(VLAN_VID_MASK | VLAN_CFI); |
9583bc14 | 2088 | |
46c88433 EJ |
2089 | in_xbundle = lookup_input_bundle(ctx->xbridge, flow->in_port.ofp_port, |
2090 | ctx->xin->packet != NULL, &in_port); | |
2091 | if (!in_xbundle) { | |
9583bc14 EJ |
2092 | xlate_report(ctx, "no input bundle, dropping"); |
2093 | return; | |
2094 | } | |
2095 | ||
2096 | /* Drop malformed frames. */ | |
33bf9176 BP |
2097 | if (flow->dl_type == htons(ETH_TYPE_VLAN) && |
2098 | !(flow->vlan_tci & htons(VLAN_CFI))) { | |
9583bc14 EJ |
2099 | if (ctx->xin->packet != NULL) { |
2100 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
2101 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet with partial " | |
2102 | "VLAN tag received on port %s", | |
46c88433 | 2103 | ctx->xbridge->name, in_xbundle->name); |
9583bc14 EJ |
2104 | } |
2105 | xlate_report(ctx, "partial VLAN tag, dropping"); | |
2106 | return; | |
2107 | } | |
2108 | ||
2109 | /* Drop frames on bundles reserved for mirroring. */ | |
46c88433 | 2110 | if (xbundle_mirror_out(ctx->xbridge, in_xbundle)) { |
9583bc14 EJ |
2111 | if (ctx->xin->packet != NULL) { |
2112 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
2113 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet received on port " | |
2114 | "%s, which is reserved exclusively for mirroring", | |
46c88433 | 2115 | ctx->xbridge->name, in_xbundle->name); |
9583bc14 EJ |
2116 | } |
2117 | xlate_report(ctx, "input port is mirror output port, dropping"); | |
2118 | return; | |
2119 | } | |
2120 | ||
2121 | /* Check VLAN. */ | |
33bf9176 | 2122 | vid = vlan_tci_to_vid(flow->vlan_tci); |
46c88433 | 2123 | if (!input_vid_is_valid(vid, in_xbundle, ctx->xin->packet != NULL)) { |
9583bc14 EJ |
2124 | xlate_report(ctx, "disallowed VLAN VID for this input port, dropping"); |
2125 | return; | |
2126 | } | |
46c88433 | 2127 | vlan = input_vid_to_vlan(in_xbundle, vid); |
9583bc14 EJ |
2128 | |
2129 | /* Check other admissibility requirements. */ | |
2130 | if (in_port && !is_admissible(ctx, in_port, vlan)) { | |
2131 | return; | |
2132 | } | |
2133 | ||
2134 | /* Learn source MAC. */ | |
2135 | if (ctx->xin->may_learn) { | |
46c88433 | 2136 | update_learning_table(ctx->xbridge, flow, wc, vlan, in_xbundle); |
9583bc14 | 2137 | } |
b256dc52 JS |
2138 | if (ctx->xin->xcache) { |
2139 | struct xc_entry *entry; | |
2140 | ||
2141 | /* Save enough info to update mac learning table later. */ | |
2142 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_NORMAL); | |
9edf6b48 | 2143 | entry->u.normal.ofproto = ctx->xbridge->ofproto; |
b256dc52 JS |
2144 | entry->u.normal.flow = xmemdup(flow, sizeof *flow); |
2145 | entry->u.normal.vlan = vlan; | |
2146 | } | |
9583bc14 EJ |
2147 | |
2148 | /* Determine output bundle. */ | |
86e2dcdd FL |
2149 | if (mcast_snooping_enabled(ctx->xbridge->ms) |
2150 | && !eth_addr_is_broadcast(flow->dl_dst) | |
2151 | && eth_addr_is_multicast(flow->dl_dst) | |
2152 | && flow->dl_type == htons(ETH_TYPE_IP)) { | |
2153 | struct mcast_snooping *ms = ctx->xbridge->ms; | |
2154 | struct mcast_group *grp; | |
2155 | ||
2156 | if (flow->nw_proto == IPPROTO_IGMP) { | |
2157 | if (ctx->xin->may_learn) { | |
2158 | if (mcast_snooping_is_membership(flow->tp_src) || | |
2159 | mcast_snooping_is_query(flow->tp_src)) { | |
2160 | update_mcast_snooping_table(ctx->xbridge, flow, vlan, | |
2161 | in_xbundle); | |
2162 | } | |
2163 | } | |
d6d5bbc9 | 2164 | |
86e2dcdd FL |
2165 | if (mcast_snooping_is_membership(flow->tp_src)) { |
2166 | ovs_rwlock_rdlock(&ms->rwlock); | |
2167 | xlate_normal_mcast_send_mrouters(ctx, ms, in_xbundle, vlan); | |
2168 | ovs_rwlock_unlock(&ms->rwlock); | |
2169 | } else { | |
2170 | xlate_report(ctx, "multicast traffic, flooding"); | |
2171 | xlate_normal_flood(ctx, in_xbundle, vlan); | |
2172 | } | |
2173 | return; | |
2174 | } else { | |
2175 | if (ip_is_local_multicast(flow->nw_dst)) { | |
2176 | /* RFC4541: section 2.1.2, item 2: Packets with a dst IP | |
2177 | * address in the 224.0.0.x range which are not IGMP must | |
2178 | * be forwarded on all ports */ | |
2179 | xlate_report(ctx, "RFC4541: section 2.1.2, item 2, flooding"); | |
2180 | xlate_normal_flood(ctx, in_xbundle, vlan); | |
2181 | return; | |
2182 | } | |
2183 | } | |
2184 | ||
2185 | /* forwarding to group base ports */ | |
2186 | ovs_rwlock_rdlock(&ms->rwlock); | |
2187 | grp = mcast_snooping_lookup(ms, flow->nw_dst, vlan); | |
2188 | if (grp) { | |
2189 | xlate_normal_mcast_send_group(ctx, ms, grp, in_xbundle, vlan); | |
2190 | xlate_normal_mcast_send_fports(ctx, ms, in_xbundle, vlan); | |
2191 | xlate_normal_mcast_send_mrouters(ctx, ms, in_xbundle, vlan); | |
9583bc14 | 2192 | } else { |
86e2dcdd FL |
2193 | if (mcast_snooping_flood_unreg(ms)) { |
2194 | xlate_report(ctx, "unregistered multicast, flooding"); | |
2195 | xlate_normal_flood(ctx, in_xbundle, vlan); | |
2196 | } else { | |
2197 | xlate_normal_mcast_send_mrouters(ctx, ms, in_xbundle, vlan); | |
2198 | xlate_normal_mcast_send_fports(ctx, ms, in_xbundle, vlan); | |
2199 | } | |
9583bc14 | 2200 | } |
86e2dcdd | 2201 | ovs_rwlock_unlock(&ms->rwlock); |
9583bc14 | 2202 | } else { |
86e2dcdd FL |
2203 | ovs_rwlock_rdlock(&ctx->xbridge->ml->rwlock); |
2204 | mac = mac_learning_lookup(ctx->xbridge->ml, flow->dl_dst, vlan); | |
2205 | mac_port = mac ? mac->port.p : NULL; | |
2206 | ovs_rwlock_unlock(&ctx->xbridge->ml->rwlock); | |
2207 | ||
2208 | if (mac_port) { | |
2209 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
2210 | struct xbundle *mac_xbundle = xbundle_lookup(xcfg, mac_port); | |
2211 | if (mac_xbundle && mac_xbundle != in_xbundle) { | |
2212 | xlate_report(ctx, "forwarding to learned port"); | |
2213 | output_normal(ctx, mac_xbundle, vlan); | |
2214 | } else if (!mac_xbundle) { | |
2215 | xlate_report(ctx, "learned port is unknown, dropping"); | |
2216 | } else { | |
2217 | xlate_report(ctx, "learned port is input port, dropping"); | |
2218 | } | |
2219 | } else { | |
2220 | xlate_report(ctx, "no learned MAC for destination, flooding"); | |
2221 | xlate_normal_flood(ctx, in_xbundle, vlan); | |
2222 | } | |
9583bc14 EJ |
2223 | } |
2224 | } | |
2225 | ||
2226 | /* Compose SAMPLE action for sFlow or IPFIX. The given probability is | |
2227 | * the number of packets out of UINT32_MAX to sample. The given | |
2228 | * cookie is passed back in the callback for each sampled packet. | |
2229 | */ | |
2230 | static size_t | |
46c88433 | 2231 | compose_sample_action(const struct xbridge *xbridge, |
9583bc14 EJ |
2232 | struct ofpbuf *odp_actions, |
2233 | const struct flow *flow, | |
2234 | const uint32_t probability, | |
2235 | const union user_action_cookie *cookie, | |
8b7ea2d4 WZ |
2236 | const size_t cookie_size, |
2237 | const odp_port_t tunnel_out_port) | |
9583bc14 EJ |
2238 | { |
2239 | size_t sample_offset, actions_offset; | |
89a8a7f0 | 2240 | odp_port_t odp_port; |
9583bc14 | 2241 | int cookie_offset; |
89a8a7f0 | 2242 | uint32_t pid; |
9583bc14 EJ |
2243 | |
2244 | sample_offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_SAMPLE); | |
2245 | ||
2246 | nl_msg_put_u32(odp_actions, OVS_SAMPLE_ATTR_PROBABILITY, probability); | |
2247 | ||
2248 | actions_offset = nl_msg_start_nested(odp_actions, OVS_SAMPLE_ATTR_ACTIONS); | |
89a8a7f0 EJ |
2249 | |
2250 | odp_port = ofp_port_to_odp_port(xbridge, flow->in_port.ofp_port); | |
9a159f74 AW |
2251 | pid = dpif_port_get_pid(xbridge->dpif, odp_port, |
2252 | flow_hash_5tuple(flow, 0)); | |
2253 | cookie_offset = odp_put_userspace_action(pid, cookie, cookie_size, | |
8b7ea2d4 | 2254 | tunnel_out_port, odp_actions); |
9583bc14 EJ |
2255 | |
2256 | nl_msg_end_nested(odp_actions, actions_offset); | |
2257 | nl_msg_end_nested(odp_actions, sample_offset); | |
2258 | return cookie_offset; | |
2259 | } | |
2260 | ||
2261 | static void | |
46c88433 EJ |
2262 | compose_sflow_cookie(const struct xbridge *xbridge, ovs_be16 vlan_tci, |
2263 | odp_port_t odp_port, unsigned int n_outputs, | |
2264 | union user_action_cookie *cookie) | |
9583bc14 EJ |
2265 | { |
2266 | int ifindex; | |
2267 | ||
2268 | cookie->type = USER_ACTION_COOKIE_SFLOW; | |
2269 | cookie->sflow.vlan_tci = vlan_tci; | |
2270 | ||
2271 | /* See http://www.sflow.org/sflow_version_5.txt (search for "Input/output | |
2272 | * port information") for the interpretation of cookie->output. */ | |
2273 | switch (n_outputs) { | |
2274 | case 0: | |
2275 | /* 0x40000000 | 256 means "packet dropped for unknown reason". */ | |
2276 | cookie->sflow.output = 0x40000000 | 256; | |
2277 | break; | |
2278 | ||
2279 | case 1: | |
46c88433 | 2280 | ifindex = dpif_sflow_odp_port_to_ifindex(xbridge->sflow, odp_port); |
9583bc14 EJ |
2281 | if (ifindex) { |
2282 | cookie->sflow.output = ifindex; | |
2283 | break; | |
2284 | } | |
2285 | /* Fall through. */ | |
2286 | default: | |
2287 | /* 0x80000000 means "multiple output ports. */ | |
2288 | cookie->sflow.output = 0x80000000 | n_outputs; | |
2289 | break; | |
2290 | } | |
2291 | } | |
2292 | ||
2293 | /* Compose SAMPLE action for sFlow bridge sampling. */ | |
2294 | static size_t | |
46c88433 | 2295 | compose_sflow_action(const struct xbridge *xbridge, |
9583bc14 EJ |
2296 | struct ofpbuf *odp_actions, |
2297 | const struct flow *flow, | |
4e022ec0 | 2298 | odp_port_t odp_port) |
9583bc14 EJ |
2299 | { |
2300 | uint32_t probability; | |
2301 | union user_action_cookie cookie; | |
2302 | ||
46c88433 | 2303 | if (!xbridge->sflow || flow->in_port.ofp_port == OFPP_NONE) { |
9583bc14 EJ |
2304 | return 0; |
2305 | } | |
2306 | ||
46c88433 EJ |
2307 | probability = dpif_sflow_get_probability(xbridge->sflow); |
2308 | compose_sflow_cookie(xbridge, htons(0), odp_port, | |
4e022ec0 | 2309 | odp_port == ODPP_NONE ? 0 : 1, &cookie); |
9583bc14 | 2310 | |
46c88433 | 2311 | return compose_sample_action(xbridge, odp_actions, flow, probability, |
8b7ea2d4 | 2312 | &cookie, sizeof cookie.sflow, ODPP_NONE); |
9583bc14 EJ |
2313 | } |
2314 | ||
2315 | static void | |
2316 | compose_flow_sample_cookie(uint16_t probability, uint32_t collector_set_id, | |
2317 | uint32_t obs_domain_id, uint32_t obs_point_id, | |
2318 | union user_action_cookie *cookie) | |
2319 | { | |
2320 | cookie->type = USER_ACTION_COOKIE_FLOW_SAMPLE; | |
2321 | cookie->flow_sample.probability = probability; | |
2322 | cookie->flow_sample.collector_set_id = collector_set_id; | |
2323 | cookie->flow_sample.obs_domain_id = obs_domain_id; | |
2324 | cookie->flow_sample.obs_point_id = obs_point_id; | |
2325 | } | |
2326 | ||
2327 | static void | |
8b7ea2d4 WZ |
2328 | compose_ipfix_cookie(union user_action_cookie *cookie, |
2329 | odp_port_t output_odp_port) | |
9583bc14 EJ |
2330 | { |
2331 | cookie->type = USER_ACTION_COOKIE_IPFIX; | |
8b7ea2d4 | 2332 | cookie->ipfix.output_odp_port = output_odp_port; |
9583bc14 EJ |
2333 | } |
2334 | ||
2335 | /* Compose SAMPLE action for IPFIX bridge sampling. */ | |
2336 | static void | |
46c88433 | 2337 | compose_ipfix_action(const struct xbridge *xbridge, |
9583bc14 | 2338 | struct ofpbuf *odp_actions, |
8b7ea2d4 WZ |
2339 | const struct flow *flow, |
2340 | odp_port_t output_odp_port) | |
9583bc14 EJ |
2341 | { |
2342 | uint32_t probability; | |
2343 | union user_action_cookie cookie; | |
8b7ea2d4 | 2344 | odp_port_t tunnel_out_port = ODPP_NONE; |
9583bc14 | 2345 | |
46c88433 | 2346 | if (!xbridge->ipfix || flow->in_port.ofp_port == OFPP_NONE) { |
9583bc14 EJ |
2347 | return; |
2348 | } | |
2349 | ||
8b7ea2d4 WZ |
2350 | /* For input case, output_odp_port is ODPP_NONE, which is an invalid port |
2351 | * number. */ | |
2352 | if (output_odp_port == ODPP_NONE && | |
2353 | !dpif_ipfix_get_bridge_exporter_input_sampling(xbridge->ipfix)) { | |
2354 | return; | |
2355 | } | |
2356 | ||
2357 | /* For output case, output_odp_port is valid*/ | |
2358 | if (output_odp_port != ODPP_NONE) { | |
2359 | if (!dpif_ipfix_get_bridge_exporter_output_sampling(xbridge->ipfix)) { | |
2360 | return; | |
2361 | } | |
2362 | /* If tunnel sampling is enabled, put an additional option attribute: | |
2363 | * OVS_USERSPACE_ATTR_TUNNEL_OUT_PORT | |
2364 | */ | |
2365 | if (dpif_ipfix_get_bridge_exporter_tunnel_sampling(xbridge->ipfix) && | |
2366 | dpif_ipfix_get_tunnel_port(xbridge->ipfix, output_odp_port) ) { | |
2367 | tunnel_out_port = output_odp_port; | |
2368 | } | |
2369 | } | |
2370 | ||
46c88433 | 2371 | probability = dpif_ipfix_get_bridge_exporter_probability(xbridge->ipfix); |
8b7ea2d4 | 2372 | compose_ipfix_cookie(&cookie, output_odp_port); |
9583bc14 | 2373 | |
46c88433 | 2374 | compose_sample_action(xbridge, odp_actions, flow, probability, |
8b7ea2d4 | 2375 | &cookie, sizeof cookie.ipfix, tunnel_out_port); |
9583bc14 EJ |
2376 | } |
2377 | ||
2378 | /* SAMPLE action for sFlow must be first action in any given list of | |
2379 | * actions. At this point we do not have all information required to | |
2380 | * build it. So try to build sample action as complete as possible. */ | |
2381 | static void | |
2382 | add_sflow_action(struct xlate_ctx *ctx) | |
2383 | { | |
46c88433 | 2384 | ctx->user_cookie_offset = compose_sflow_action(ctx->xbridge, |
cc377352 | 2385 | ctx->xout->odp_actions, |
4e022ec0 | 2386 | &ctx->xin->flow, ODPP_NONE); |
9583bc14 EJ |
2387 | ctx->sflow_odp_port = 0; |
2388 | ctx->sflow_n_outputs = 0; | |
2389 | } | |
2390 | ||
2391 | /* SAMPLE action for IPFIX must be 1st or 2nd action in any given list | |
2392 | * of actions, eventually after the SAMPLE action for sFlow. */ | |
2393 | static void | |
2394 | add_ipfix_action(struct xlate_ctx *ctx) | |
2395 | { | |
cc377352 | 2396 | compose_ipfix_action(ctx->xbridge, ctx->xout->odp_actions, |
8b7ea2d4 WZ |
2397 | &ctx->xin->flow, ODPP_NONE); |
2398 | } | |
2399 | ||
2400 | static void | |
2401 | add_ipfix_output_action(struct xlate_ctx *ctx, odp_port_t port) | |
2402 | { | |
2403 | compose_ipfix_action(ctx->xbridge, ctx->xout->odp_actions, | |
2404 | &ctx->xin->flow, port); | |
9583bc14 EJ |
2405 | } |
2406 | ||
2407 | /* Fix SAMPLE action according to data collected while composing ODP actions. | |
2408 | * We need to fix SAMPLE actions OVS_SAMPLE_ATTR_ACTIONS attribute, i.e. nested | |
2409 | * USERSPACE action's user-cookie which is required for sflow. */ | |
2410 | static void | |
2411 | fix_sflow_action(struct xlate_ctx *ctx) | |
2412 | { | |
2413 | const struct flow *base = &ctx->base_flow; | |
2414 | union user_action_cookie *cookie; | |
2415 | ||
2416 | if (!ctx->user_cookie_offset) { | |
2417 | return; | |
2418 | } | |
2419 | ||
cc377352 | 2420 | cookie = ofpbuf_at(ctx->xout->odp_actions, ctx->user_cookie_offset, |
9583bc14 EJ |
2421 | sizeof cookie->sflow); |
2422 | ovs_assert(cookie->type == USER_ACTION_COOKIE_SFLOW); | |
2423 | ||
46c88433 | 2424 | compose_sflow_cookie(ctx->xbridge, base->vlan_tci, |
9583bc14 EJ |
2425 | ctx->sflow_odp_port, ctx->sflow_n_outputs, cookie); |
2426 | } | |
2427 | ||
db7d4e46 | 2428 | static enum slow_path_reason |
642dc74d | 2429 | process_special(struct xlate_ctx *ctx, const struct flow *flow, |
46c88433 | 2430 | const struct xport *xport, const struct ofpbuf *packet) |
db7d4e46 | 2431 | { |
642dc74d | 2432 | struct flow_wildcards *wc = &ctx->xout->wc; |
46c88433 | 2433 | const struct xbridge *xbridge = ctx->xbridge; |
642dc74d | 2434 | |
46c88433 | 2435 | if (!xport) { |
db7d4e46 | 2436 | return 0; |
46c88433 | 2437 | } else if (xport->cfm && cfm_should_process_flow(xport->cfm, flow, wc)) { |
db7d4e46 | 2438 | if (packet) { |
46c88433 | 2439 | cfm_process_heartbeat(xport->cfm, packet); |
db7d4e46 JP |
2440 | } |
2441 | return SLOW_CFM; | |
fab52e16 | 2442 | } else if (xport->bfd && bfd_should_process_flow(xport->bfd, flow, wc)) { |
db7d4e46 | 2443 | if (packet) { |
46c88433 | 2444 | bfd_process_packet(xport->bfd, flow, packet); |
60d02c72 AW |
2445 | /* If POLL received, immediately sends FINAL back. */ |
2446 | if (bfd_should_send_packet(xport->bfd)) { | |
6d308b28 | 2447 | ofproto_dpif_monitor_port_send_soon(xport->ofport); |
60d02c72 | 2448 | } |
db7d4e46 JP |
2449 | } |
2450 | return SLOW_BFD; | |
46c88433 | 2451 | } else if (xport->xbundle && xport->xbundle->lacp |
db7d4e46 JP |
2452 | && flow->dl_type == htons(ETH_TYPE_LACP)) { |
2453 | if (packet) { | |
46c88433 | 2454 | lacp_process_packet(xport->xbundle->lacp, xport->ofport, packet); |
db7d4e46 JP |
2455 | } |
2456 | return SLOW_LACP; | |
9efd308e DV |
2457 | } else if ((xbridge->stp || xbridge->rstp) && |
2458 | stp_should_process_flow(flow, wc)) { | |
db7d4e46 | 2459 | if (packet) { |
f025bcb7 JR |
2460 | xbridge->stp |
2461 | ? stp_process_packet(xport, packet) | |
2462 | : rstp_process_packet(xport, packet); | |
db7d4e46 JP |
2463 | } |
2464 | return SLOW_STP; | |
2465 | } else { | |
2466 | return 0; | |
2467 | } | |
2468 | } | |
2469 | ||
a36de779 PS |
2470 | static int |
2471 | tnl_route_lookup_flow(const struct flow *oflow, | |
2472 | ovs_be32 *ip, struct xport **out_port) | |
2473 | { | |
2474 | char out_dev[IFNAMSIZ]; | |
2475 | struct xbridge *xbridge; | |
2476 | struct xlate_cfg *xcfg; | |
2477 | ovs_be32 gw; | |
2478 | ||
2479 | if (!ovs_router_lookup(oflow->tunnel.ip_dst, out_dev, &gw)) { | |
2480 | return -ENOENT; | |
2481 | } | |
2482 | ||
2483 | if (gw) { | |
2484 | *ip = gw; | |
2485 | } else { | |
2486 | *ip = oflow->tunnel.ip_dst; | |
2487 | } | |
2488 | ||
2489 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
2490 | ovs_assert(xcfg); | |
2491 | ||
2492 | HMAP_FOR_EACH (xbridge, hmap_node, &xcfg->xbridges) { | |
2493 | if (!strncmp(xbridge->name, out_dev, IFNAMSIZ)) { | |
2494 | struct xport *port; | |
2495 | ||
2496 | HMAP_FOR_EACH (port, ofp_node, &xbridge->xports) { | |
2497 | if (!strncmp(netdev_get_name(port->netdev), out_dev, IFNAMSIZ)) { | |
2498 | *out_port = port; | |
2499 | return 0; | |
2500 | } | |
2501 | } | |
2502 | } | |
2503 | } | |
2504 | return -ENOENT; | |
2505 | } | |
2506 | ||
2507 | static int | |
2508 | xlate_flood_packet(struct xbridge *xbridge, struct ofpbuf *packet) | |
2509 | { | |
2510 | struct ofpact_output output; | |
2511 | struct flow flow; | |
2512 | ||
2513 | ofpact_init(&output.ofpact, OFPACT_OUTPUT, sizeof output); | |
2514 | /* Use OFPP_NONE as the in_port to avoid special packet processing. */ | |
2515 | flow_extract(packet, NULL, &flow); | |
2516 | flow.in_port.ofp_port = OFPP_NONE; | |
2517 | output.port = OFPP_FLOOD; | |
2518 | output.max_len = 0; | |
2519 | ||
2520 | return ofproto_dpif_execute_actions(xbridge->ofproto, &flow, NULL, | |
2521 | &output.ofpact, sizeof output, | |
2522 | packet); | |
2523 | } | |
2524 | ||
2525 | static void | |
2526 | tnl_send_arp_request(const struct xport *out_dev, const uint8_t eth_src[ETH_ADDR_LEN], | |
2527 | ovs_be32 ip_src, ovs_be32 ip_dst) | |
2528 | { | |
2529 | struct xbridge *xbridge = out_dev->xbridge; | |
2530 | struct ofpbuf packet; | |
2531 | ||
2532 | ofpbuf_init(&packet, 0); | |
2533 | compose_arp(&packet, eth_src, ip_src, ip_dst); | |
2534 | ||
2535 | xlate_flood_packet(xbridge, &packet); | |
2536 | ofpbuf_uninit(&packet); | |
2537 | } | |
2538 | ||
2539 | static int | |
2540 | build_tunnel_send(const struct xlate_ctx *ctx, const struct xport *xport, | |
2541 | const struct flow *flow, odp_port_t tunnel_odp_port) | |
2542 | { | |
2543 | struct ovs_action_push_tnl tnl_push_data; | |
2544 | struct xport *out_dev = NULL; | |
2545 | ovs_be32 s_ip, d_ip = 0; | |
2546 | uint8_t smac[ETH_ADDR_LEN]; | |
2547 | uint8_t dmac[ETH_ADDR_LEN]; | |
2548 | int err; | |
2549 | ||
2550 | err = tnl_route_lookup_flow(flow, &d_ip, &out_dev); | |
2551 | if (err) { | |
2552 | return err; | |
2553 | } | |
2554 | ||
2555 | /* Use mac addr of bridge port of the peer. */ | |
2556 | err = netdev_get_etheraddr(out_dev->netdev, smac); | |
2557 | if (err) { | |
2558 | return err; | |
2559 | } | |
2560 | ||
2561 | err = netdev_get_in4(out_dev->netdev, (struct in_addr *) &s_ip, NULL); | |
2562 | if (err) { | |
2563 | return err; | |
2564 | } | |
2565 | ||
2566 | err = tnl_arp_lookup(out_dev->xbridge->name, d_ip, dmac); | |
2567 | if (err) { | |
2568 | tnl_send_arp_request(out_dev, smac, s_ip, d_ip); | |
2569 | return err; | |
2570 | } | |
2571 | if (ctx->xin->xcache) { | |
2572 | struct xc_entry *entry; | |
2573 | ||
2574 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_TNL_ARP); | |
2575 | strncpy(entry->u.tnl_arp_cache.br_name, out_dev->xbridge->name, IFNAMSIZ); | |
2576 | entry->u.tnl_arp_cache.d_ip = d_ip; | |
2577 | } | |
2578 | err = tnl_port_build_header(xport->ofport, flow, | |
2579 | dmac, smac, s_ip, &tnl_push_data); | |
2580 | if (err) { | |
2581 | return err; | |
2582 | } | |
2583 | tnl_push_data.tnl_port = odp_to_u32(tunnel_odp_port); | |
2584 | tnl_push_data.out_port = odp_to_u32(out_dev->odp_port); | |
2585 | odp_put_tnl_push_action(ctx->xout->odp_actions, &tnl_push_data); | |
2586 | return 0; | |
2587 | } | |
2588 | ||
9583bc14 | 2589 | static void |
4e022ec0 | 2590 | compose_output_action__(struct xlate_ctx *ctx, ofp_port_t ofp_port, |
9583bc14 EJ |
2591 | bool check_stp) |
2592 | { | |
46c88433 | 2593 | const struct xport *xport = get_ofp_port(ctx->xbridge, ofp_port); |
1dd35f8a | 2594 | struct flow_wildcards *wc = &ctx->xout->wc; |
33bf9176 | 2595 | struct flow *flow = &ctx->xin->flow; |
a36de779 | 2596 | struct flow_tnl flow_tnl; |
9583bc14 | 2597 | ovs_be16 flow_vlan_tci; |
1362e248 | 2598 | uint32_t flow_pkt_mark; |
9583bc14 | 2599 | uint8_t flow_nw_tos; |
4e022ec0 | 2600 | odp_port_t out_port, odp_port; |
a36de779 | 2601 | bool tnl_push_pop_send = false; |
ca077186 | 2602 | uint8_t dscp; |
9583bc14 EJ |
2603 | |
2604 | /* If 'struct flow' gets additional metadata, we'll need to zero it out | |
2605 | * before traversing a patch port. */ | |
c61f3870 | 2606 | BUILD_ASSERT_DECL(FLOW_WC_SEQ == 28); |
a36de779 | 2607 | memset(&flow_tnl, 0, sizeof flow_tnl); |
9583bc14 | 2608 | |
46c88433 | 2609 | if (!xport) { |
9583bc14 EJ |
2610 | xlate_report(ctx, "Nonexistent output port"); |
2611 | return; | |
46c88433 | 2612 | } else if (xport->config & OFPUTIL_PC_NO_FWD) { |
9583bc14 EJ |
2613 | xlate_report(ctx, "OFPPC_NO_FWD set, skipping output"); |
2614 | return; | |
0d1cee12 | 2615 | } else if (check_stp) { |
bbbca389 | 2616 | if (is_stp(&ctx->base_flow)) { |
9efd308e DV |
2617 | if (!xport_stp_should_forward_bpdu(xport) && |
2618 | !xport_rstp_should_manage_bpdu(xport)) { | |
2619 | if (ctx->xbridge->stp != NULL) { | |
2620 | xlate_report(ctx, "STP not in listening state, " | |
2621 | "skipping bpdu output"); | |
2622 | } else if (ctx->xbridge->rstp != NULL) { | |
2623 | xlate_report(ctx, "RSTP not managing BPDU in this state, " | |
2624 | "skipping bpdu output"); | |
2625 | } | |
0d1cee12 K |
2626 | return; |
2627 | } | |
9efd308e DV |
2628 | } else if (!xport_stp_forward_state(xport) || |
2629 | !xport_rstp_forward_state(xport)) { | |
2630 | if (ctx->xbridge->stp != NULL) { | |
2631 | xlate_report(ctx, "STP not in forwarding state, " | |
2632 | "skipping output"); | |
2633 | } else if (ctx->xbridge->rstp != NULL) { | |
2634 | xlate_report(ctx, "RSTP not in forwarding state, " | |
2635 | "skipping output"); | |
2636 | } | |
0d1cee12 K |
2637 | return; |
2638 | } | |
9583bc14 EJ |
2639 | } |
2640 | ||
46c88433 EJ |
2641 | if (mbridge_has_mirrors(ctx->xbridge->mbridge) && xport->xbundle) { |
2642 | ctx->xout->mirrors |= xbundle_mirror_dst(xport->xbundle->xbridge, | |
2643 | xport->xbundle); | |
cdf5d3a5 EJ |
2644 | } |
2645 | ||
46c88433 EJ |
2646 | if (xport->peer) { |
2647 | const struct xport *peer = xport->peer; | |
9583bc14 | 2648 | struct flow old_flow = ctx->xin->flow; |
9583bc14 | 2649 | enum slow_path_reason special; |
9583bc14 | 2650 | |
46c88433 EJ |
2651 | ctx->xbridge = peer->xbridge; |
2652 | flow->in_port.ofp_port = peer->ofp_port; | |
33bf9176 BP |
2653 | flow->metadata = htonll(0); |
2654 | memset(&flow->tunnel, 0, sizeof flow->tunnel); | |
2655 | memset(flow->regs, 0, sizeof flow->regs); | |
c61f3870 | 2656 | flow->actset_output = OFPP_UNSET; |
9583bc14 | 2657 | |
642dc74d | 2658 | special = process_special(ctx, &ctx->xin->flow, peer, |
9583bc14 EJ |
2659 | ctx->xin->packet); |
2660 | if (special) { | |
04594cd5 | 2661 | ctx->xout->slow |= special; |
ddd3c975 | 2662 | } else if (may_receive(peer, ctx)) { |
9efd308e | 2663 | if (xport_stp_forward_state(peer) && xport_rstp_forward_state(peer)) { |
6d328fa2 | 2664 | xlate_table_action(ctx, flow->in_port.ofp_port, 0, true, true); |
9583bc14 | 2665 | } else { |
9efd308e DV |
2666 | /* Forwarding is disabled by STP and RSTP. Let OFPP_NORMAL and |
2667 | * the learning action look at the packet, then drop it. */ | |
9583bc14 | 2668 | struct flow old_base_flow = ctx->base_flow; |
cc377352 | 2669 | size_t old_size = ofpbuf_size(ctx->xout->odp_actions); |
cdf5d3a5 | 2670 | mirror_mask_t old_mirrors = ctx->xout->mirrors; |
6d328fa2 | 2671 | xlate_table_action(ctx, flow->in_port.ofp_port, 0, true, true); |
cdf5d3a5 | 2672 | ctx->xout->mirrors = old_mirrors; |
9583bc14 | 2673 | ctx->base_flow = old_base_flow; |
cc377352 | 2674 | ofpbuf_set_size(ctx->xout->odp_actions, old_size); |
9583bc14 EJ |
2675 | } |
2676 | } | |
2677 | ||
2678 | ctx->xin->flow = old_flow; | |
832554e3 | 2679 | ctx->xbridge = xport->xbridge; |
9583bc14 EJ |
2680 | |
2681 | if (ctx->xin->resubmit_stats) { | |
46c88433 EJ |
2682 | netdev_vport_inc_tx(xport->netdev, ctx->xin->resubmit_stats); |
2683 | netdev_vport_inc_rx(peer->netdev, ctx->xin->resubmit_stats); | |
a1aeea86 AW |
2684 | if (peer->bfd) { |
2685 | bfd_account_rx(peer->bfd, ctx->xin->resubmit_stats); | |
2686 | } | |
9583bc14 | 2687 | } |
b256dc52 JS |
2688 | if (ctx->xin->xcache) { |
2689 | struct xc_entry *entry; | |
2690 | ||
2691 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_NETDEV); | |
2692 | entry->u.dev.tx = netdev_ref(xport->netdev); | |
2693 | entry->u.dev.rx = netdev_ref(peer->netdev); | |
2694 | entry->u.dev.bfd = bfd_ref(peer->bfd); | |
2695 | } | |
9583bc14 EJ |
2696 | return; |
2697 | } | |
2698 | ||
33bf9176 | 2699 | flow_vlan_tci = flow->vlan_tci; |
1362e248 | 2700 | flow_pkt_mark = flow->pkt_mark; |
33bf9176 | 2701 | flow_nw_tos = flow->nw_tos; |
9583bc14 | 2702 | |
16194afd DDP |
2703 | if (count_skb_priorities(xport)) { |
2704 | memset(&wc->masks.skb_priority, 0xff, sizeof wc->masks.skb_priority); | |
2705 | if (dscp_from_skb_priority(xport, flow->skb_priority, &dscp)) { | |
2706 | wc->masks.nw_tos |= IP_DSCP_MASK; | |
2707 | flow->nw_tos &= ~IP_DSCP_MASK; | |
2708 | flow->nw_tos |= dscp; | |
2709 | } | |
9583bc14 EJ |
2710 | } |
2711 | ||
46c88433 | 2712 | if (xport->is_tunnel) { |
9583bc14 EJ |
2713 | /* Save tunnel metadata so that changes made due to |
2714 | * the Logical (tunnel) Port are not visible for any further | |
2715 | * matches, while explicit set actions on tunnel metadata are. | |
2716 | */ | |
a36de779 | 2717 | flow_tnl = flow->tunnel; |
46c88433 | 2718 | odp_port = tnl_port_send(xport->ofport, flow, &ctx->xout->wc); |
4e022ec0 | 2719 | if (odp_port == ODPP_NONE) { |
9583bc14 EJ |
2720 | xlate_report(ctx, "Tunneling decided against output"); |
2721 | goto out; /* restore flow_nw_tos */ | |
2722 | } | |
33bf9176 | 2723 | if (flow->tunnel.ip_dst == ctx->orig_tunnel_ip_dst) { |
9583bc14 EJ |
2724 | xlate_report(ctx, "Not tunneling to our own address"); |
2725 | goto out; /* restore flow_nw_tos */ | |
2726 | } | |
2727 | if (ctx->xin->resubmit_stats) { | |
46c88433 | 2728 | netdev_vport_inc_tx(xport->netdev, ctx->xin->resubmit_stats); |
9583bc14 | 2729 | } |
b256dc52 JS |
2730 | if (ctx->xin->xcache) { |
2731 | struct xc_entry *entry; | |
2732 | ||
2733 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_NETDEV); | |
2734 | entry->u.dev.tx = netdev_ref(xport->netdev); | |
2735 | } | |
9583bc14 | 2736 | out_port = odp_port; |
a36de779 PS |
2737 | if (ovs_native_tunneling_is_on(ctx->xbridge->ofproto)) { |
2738 | tnl_push_pop_send = true; | |
2739 | } else { | |
2740 | commit_odp_tunnel_action(flow, &ctx->base_flow, | |
2741 | ctx->xout->odp_actions); | |
2742 | flow->tunnel = flow_tnl; /* Restore tunnel metadata */ | |
2743 | } | |
9583bc14 | 2744 | } else { |
46c88433 | 2745 | odp_port = xport->odp_port; |
7614e5d0 | 2746 | out_port = odp_port; |
46c88433 | 2747 | if (ofproto_has_vlan_splinters(ctx->xbridge->ofproto)) { |
7614e5d0 JR |
2748 | ofp_port_t vlandev_port; |
2749 | ||
1dd35f8a | 2750 | wc->masks.vlan_tci |= htons(VLAN_VID_MASK | VLAN_CFI); |
7614e5d0 JR |
2751 | vlandev_port = vsp_realdev_to_vlandev(ctx->xbridge->ofproto, |
2752 | ofp_port, flow->vlan_tci); | |
2753 | if (vlandev_port != ofp_port) { | |
2754 | out_port = ofp_port_to_odp_port(ctx->xbridge, vlandev_port); | |
2755 | flow->vlan_tci = htons(0); | |
2756 | } | |
9583bc14 | 2757 | } |
9583bc14 | 2758 | } |
9583bc14 | 2759 | |
4e022ec0 | 2760 | if (out_port != ODPP_NONE) { |
7fd91025 | 2761 | ctx->xout->slow |= commit_odp_actions(flow, &ctx->base_flow, |
cc377352 | 2762 | ctx->xout->odp_actions, |
a36de779 | 2763 | wc, |
d23df9a8 | 2764 | ctx->xbridge->masked_set_action); |
adcf00ba | 2765 | |
92c08f09 | 2766 | if (ctx->use_recirc) { |
347bf289 | 2767 | struct ovs_action_hash *act_hash; |
92c08f09 | 2768 | struct xlate_recirc *xr = &ctx->recirc; |
adcf00ba | 2769 | |
347bf289 | 2770 | /* Hash action. */ |
cc377352 | 2771 | act_hash = nl_msg_put_unspec_uninit(ctx->xout->odp_actions, |
347bf289 AZ |
2772 | OVS_ACTION_ATTR_HASH, |
2773 | sizeof *act_hash); | |
2774 | act_hash->hash_alg = xr->hash_alg; | |
62ac1f20 | 2775 | act_hash->hash_basis = xr->hash_basis; |
347bf289 AZ |
2776 | |
2777 | /* Recirc action. */ | |
cc377352 | 2778 | nl_msg_put_u32(ctx->xout->odp_actions, OVS_ACTION_ATTR_RECIRC, |
347bf289 | 2779 | xr->recirc_id); |
adcf00ba | 2780 | } else { |
a36de779 PS |
2781 | |
2782 | if (tnl_push_pop_send) { | |
2783 | build_tunnel_send(ctx, xport, flow, odp_port); | |
2784 | flow->tunnel = flow_tnl; /* Restore tunnel metadata */ | |
2785 | } else { | |
2786 | odp_port_t odp_tnl_port = ODPP_NONE; | |
2787 | ||
2788 | /* XXX: Write better Filter for tunnel port. We can use inport | |
2789 | * int tunnel-port flow to avoid these checks completely. */ | |
2790 | if (ofp_port == OFPP_LOCAL && | |
2791 | ovs_native_tunneling_is_on(ctx->xbridge->ofproto)) { | |
2792 | ||
2793 | odp_tnl_port = tnl_port_map_lookup(flow, wc); | |
2794 | } | |
2795 | ||
2796 | if (odp_tnl_port != ODPP_NONE) { | |
2797 | nl_msg_put_odp_port(ctx->xout->odp_actions, | |
2798 | OVS_ACTION_ATTR_TUNNEL_POP, | |
2799 | odp_tnl_port); | |
2800 | } else { | |
2801 | /* Tunnel push-pop action is not compatible with | |
2802 | * IPFIX action. */ | |
2803 | add_ipfix_output_action(ctx, out_port); | |
2804 | nl_msg_put_odp_port(ctx->xout->odp_actions, | |
2805 | OVS_ACTION_ATTR_OUTPUT, | |
2806 | out_port); | |
2807 | } | |
2808 | } | |
adcf00ba | 2809 | } |
9583bc14 | 2810 | |
6cbbf4fa EJ |
2811 | ctx->sflow_odp_port = odp_port; |
2812 | ctx->sflow_n_outputs++; | |
2813 | ctx->xout->nf_output_iface = ofp_port; | |
2814 | } | |
2815 | ||
2816 | out: | |
9583bc14 | 2817 | /* Restore flow */ |
33bf9176 | 2818 | flow->vlan_tci = flow_vlan_tci; |
1362e248 | 2819 | flow->pkt_mark = flow_pkt_mark; |
33bf9176 | 2820 | flow->nw_tos = flow_nw_tos; |
9583bc14 EJ |
2821 | } |
2822 | ||
2823 | static void | |
4e022ec0 | 2824 | compose_output_action(struct xlate_ctx *ctx, ofp_port_t ofp_port) |
9583bc14 EJ |
2825 | { |
2826 | compose_output_action__(ctx, ofp_port, true); | |
2827 | } | |
2828 | ||
bb61b33d BP |
2829 | static void |
2830 | xlate_recursively(struct xlate_ctx *ctx, struct rule_dpif *rule) | |
bb61b33d BP |
2831 | { |
2832 | struct rule_dpif *old_rule = ctx->rule; | |
dc723c44 | 2833 | const struct rule_actions *actions; |
bb61b33d BP |
2834 | |
2835 | if (ctx->xin->resubmit_stats) { | |
70742c7f | 2836 | rule_dpif_credit_stats(rule, ctx->xin->resubmit_stats); |
bb61b33d BP |
2837 | } |
2838 | ||
98b07853 | 2839 | ctx->resubmits++; |
bb61b33d BP |
2840 | ctx->recurse++; |
2841 | ctx->rule = rule; | |
6f00e29b BP |
2842 | actions = rule_dpif_get_actions(rule); |
2843 | do_xlate_actions(actions->ofpacts, actions->ofpacts_len, ctx); | |
bb61b33d BP |
2844 | ctx->rule = old_rule; |
2845 | ctx->recurse--; | |
bb61b33d BP |
2846 | } |
2847 | ||
bd3240ba SH |
2848 | static bool |
2849 | xlate_resubmit_resource_check(struct xlate_ctx *ctx) | |
9583bc14 | 2850 | { |
98b07853 BP |
2851 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); |
2852 | ||
adcf00ba | 2853 | if (ctx->recurse >= MAX_RESUBMIT_RECURSION + MAX_INTERNAL_RESUBMITS) { |
98b07853 BP |
2854 | VLOG_ERR_RL(&rl, "resubmit actions recursed over %d times", |
2855 | MAX_RESUBMIT_RECURSION); | |
adcf00ba | 2856 | } else if (ctx->resubmits >= MAX_RESUBMITS + MAX_INTERNAL_RESUBMITS) { |
98b07853 | 2857 | VLOG_ERR_RL(&rl, "over %d resubmit actions", MAX_RESUBMITS); |
cc377352 | 2858 | } else if (ofpbuf_size(ctx->xout->odp_actions) > UINT16_MAX) { |
98b07853 | 2859 | VLOG_ERR_RL(&rl, "resubmits yielded over 64 kB of actions"); |
1f317cb5 | 2860 | } else if (ofpbuf_size(&ctx->stack) >= 65536) { |
98b07853 BP |
2861 | VLOG_ERR_RL(&rl, "resubmits yielded over 64 kB of stack"); |
2862 | } else { | |
bd3240ba SH |
2863 | return true; |
2864 | } | |
2865 | ||
2866 | return false; | |
2867 | } | |
2868 | ||
2869 | static void | |
6d328fa2 SH |
2870 | xlate_table_action(struct xlate_ctx *ctx, ofp_port_t in_port, uint8_t table_id, |
2871 | bool may_packet_in, bool honor_table_miss) | |
bd3240ba SH |
2872 | { |
2873 | if (xlate_resubmit_resource_check(ctx)) { | |
34dd0d78 | 2874 | struct flow_wildcards *wc; |
9583bc14 | 2875 | uint8_t old_table_id = ctx->table_id; |
3f207910 | 2876 | struct rule_dpif *rule; |
9583bc14 EJ |
2877 | |
2878 | ctx->table_id = table_id; | |
34dd0d78 | 2879 | wc = (ctx->xin->skip_wildcards) ? NULL : &ctx->xout->wc; |
9583bc14 | 2880 | |
34dd0d78 JR |
2881 | rule = rule_dpif_lookup_from_table(ctx->xbridge->ofproto, |
2882 | &ctx->xin->flow, wc, | |
2883 | ctx->xin->xcache != NULL, | |
2884 | ctx->xin->resubmit_stats, | |
2885 | &ctx->table_id, in_port, | |
2886 | may_packet_in, honor_table_miss); | |
9583bc14 | 2887 | |
a8c31348 BP |
2888 | if (OVS_UNLIKELY(ctx->xin->resubmit_hook)) { |
2889 | ctx->xin->resubmit_hook(ctx->xin, rule, ctx->recurse + 1); | |
ad3efdcb EJ |
2890 | } |
2891 | ||
a2143702 | 2892 | if (rule) { |
83709dfa JR |
2893 | /* Fill in the cache entry here instead of xlate_recursively |
2894 | * to make the reference counting more explicit. We take a | |
2895 | * reference in the lookups above if we are going to cache the | |
2896 | * rule. */ | |
2897 | if (ctx->xin->xcache) { | |
2898 | struct xc_entry *entry; | |
2899 | ||
2900 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_RULE); | |
2901 | entry->u.rule = rule; | |
2902 | } | |
bb61b33d | 2903 | xlate_recursively(ctx, rule); |
ad3efdcb EJ |
2904 | } |
2905 | ||
9583bc14 | 2906 | ctx->table_id = old_table_id; |
98b07853 | 2907 | return; |
9583bc14 | 2908 | } |
98b07853 BP |
2909 | |
2910 | ctx->exit = true; | |
9583bc14 EJ |
2911 | } |
2912 | ||
f4fb341b | 2913 | static void |
1e684d7d RW |
2914 | xlate_group_stats(struct xlate_ctx *ctx, struct group_dpif *group, |
2915 | struct ofputil_bucket *bucket) | |
2916 | { | |
2917 | if (ctx->xin->resubmit_stats) { | |
2918 | group_dpif_credit_stats(group, bucket, ctx->xin->resubmit_stats); | |
2919 | } | |
2920 | if (ctx->xin->xcache) { | |
2921 | struct xc_entry *entry; | |
2922 | ||
2923 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_GROUP); | |
2924 | entry->u.group.group = group_dpif_ref(group); | |
2925 | entry->u.group.bucket = bucket; | |
2926 | } | |
2927 | } | |
2928 | ||
2929 | static void | |
2930 | xlate_group_bucket(struct xlate_ctx *ctx, struct ofputil_bucket *bucket) | |
f4fb341b SH |
2931 | { |
2932 | uint64_t action_list_stub[1024 / 8]; | |
2933 | struct ofpbuf action_list, action_set; | |
2934 | ||
2935 | ofpbuf_use_const(&action_set, bucket->ofpacts, bucket->ofpacts_len); | |
2936 | ofpbuf_use_stub(&action_list, action_list_stub, sizeof action_list_stub); | |
2937 | ||
2938 | ofpacts_execute_action_set(&action_list, &action_set); | |
2939 | ctx->recurse++; | |
1f317cb5 | 2940 | do_xlate_actions(ofpbuf_data(&action_list), ofpbuf_size(&action_list), ctx); |
f4fb341b SH |
2941 | ctx->recurse--; |
2942 | ||
2943 | ofpbuf_uninit(&action_set); | |
2944 | ofpbuf_uninit(&action_list); | |
2945 | } | |
2946 | ||
2947 | static void | |
2948 | xlate_all_group(struct xlate_ctx *ctx, struct group_dpif *group) | |
2949 | { | |
1e684d7d | 2950 | struct ofputil_bucket *bucket; |
f4fb341b SH |
2951 | const struct list *buckets; |
2952 | struct flow old_flow = ctx->xin->flow; | |
2953 | ||
2954 | group_dpif_get_buckets(group, &buckets); | |
2955 | ||
2956 | LIST_FOR_EACH (bucket, list_node, buckets) { | |
2957 | xlate_group_bucket(ctx, bucket); | |
2958 | /* Roll back flow to previous state. | |
2959 | * This is equivalent to cloning the packet for each bucket. | |
2960 | * | |
2961 | * As a side effect any subsequently applied actions will | |
2962 | * also effectively be applied to a clone of the packet taken | |
2963 | * just before applying the all or indirect group. */ | |
2964 | ctx->xin->flow = old_flow; | |
2965 | } | |
1e684d7d | 2966 | xlate_group_stats(ctx, group, NULL); |
f4fb341b SH |
2967 | } |
2968 | ||
dd8cd4b4 SH |
2969 | static void |
2970 | xlate_ff_group(struct xlate_ctx *ctx, struct group_dpif *group) | |
2971 | { | |
1e684d7d | 2972 | struct ofputil_bucket *bucket; |
dd8cd4b4 SH |
2973 | |
2974 | bucket = group_first_live_bucket(ctx, group, 0); | |
2975 | if (bucket) { | |
2976 | xlate_group_bucket(ctx, bucket); | |
1e684d7d | 2977 | xlate_group_stats(ctx, group, bucket); |
dd8cd4b4 SH |
2978 | } |
2979 | } | |
2980 | ||
fe7e5749 SH |
2981 | static void |
2982 | xlate_select_group(struct xlate_ctx *ctx, struct group_dpif *group) | |
2983 | { | |
2984 | struct flow_wildcards *wc = &ctx->xout->wc; | |
1e684d7d | 2985 | struct ofputil_bucket *bucket; |
fe7e5749 SH |
2986 | uint32_t basis; |
2987 | ||
1d1aae0b | 2988 | basis = flow_hash_symmetric_l4(&ctx->xin->flow, 0); |
fe7e5749 SH |
2989 | bucket = group_best_live_bucket(ctx, group, basis); |
2990 | if (bucket) { | |
2991 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); | |
1d1aae0b SS |
2992 | memset(&wc->masks.dl_src, 0xff, sizeof wc->masks.dl_src); |
2993 | memset(&wc->masks.dl_type, 0xff, sizeof wc->masks.dl_type); | |
2994 | memset(&wc->masks.nw_dst, 0xff, sizeof wc->masks.nw_dst); | |
2995 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); | |
2996 | memset(&wc->masks.nw_src, 0xff, sizeof wc->masks.nw_src); | |
2997 | memset(&wc->masks.tp_dst, 0xff, sizeof wc->masks.tp_dst); | |
2998 | memset(&wc->masks.tp_src, 0xff, sizeof wc->masks.tp_src); | |
2999 | memset(&wc->masks.vlan_tci, 0xff, sizeof wc->masks.vlan_tci); | |
3000 | ||
fe7e5749 | 3001 | xlate_group_bucket(ctx, bucket); |
1e684d7d | 3002 | xlate_group_stats(ctx, group, bucket); |
fe7e5749 SH |
3003 | } |
3004 | } | |
3005 | ||
f4fb341b SH |
3006 | static void |
3007 | xlate_group_action__(struct xlate_ctx *ctx, struct group_dpif *group) | |
3008 | { | |
5a070238 BP |
3009 | ctx->in_group = true; |
3010 | ||
f4fb341b SH |
3011 | switch (group_dpif_get_type(group)) { |
3012 | case OFPGT11_ALL: | |
3013 | case OFPGT11_INDIRECT: | |
3014 | xlate_all_group(ctx, group); | |
3015 | break; | |
3016 | case OFPGT11_SELECT: | |
fe7e5749 | 3017 | xlate_select_group(ctx, group); |
f4fb341b | 3018 | break; |
dd8cd4b4 SH |
3019 | case OFPGT11_FF: |
3020 | xlate_ff_group(ctx, group); | |
3021 | break; | |
f4fb341b | 3022 | default: |
428b2edd | 3023 | OVS_NOT_REACHED(); |
f4fb341b | 3024 | } |
809c7548 | 3025 | group_dpif_unref(group); |
5a070238 BP |
3026 | |
3027 | ctx->in_group = false; | |
3028 | } | |
3029 | ||
3030 | static bool | |
3031 | xlate_group_resource_check(struct xlate_ctx *ctx) | |
3032 | { | |
3033 | if (!xlate_resubmit_resource_check(ctx)) { | |
3034 | return false; | |
3035 | } else if (ctx->in_group) { | |
3036 | /* Prevent nested translation of OpenFlow groups. | |
3037 | * | |
3038 | * OpenFlow allows this restriction. We enforce this restriction only | |
3039 | * because, with the current architecture, we would otherwise have to | |
3040 | * take a possibly recursive read lock on the ofgroup rwlock, which is | |
3041 | * unsafe given that POSIX allows taking a read lock to block if there | |
3042 | * is a thread blocked on taking the write lock. Other solutions | |
3043 | * without this restriction are also possible, but seem unwarranted | |
3044 | * given the current limited use of groups. */ | |
3045 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); | |
3046 | ||
3047 | VLOG_ERR_RL(&rl, "cannot recursively translate OpenFlow group"); | |
3048 | return false; | |
3049 | } else { | |
3050 | return true; | |
3051 | } | |
f4fb341b SH |
3052 | } |
3053 | ||
3054 | static bool | |
3055 | xlate_group_action(struct xlate_ctx *ctx, uint32_t group_id) | |
3056 | { | |
5a070238 | 3057 | if (xlate_group_resource_check(ctx)) { |
f4fb341b SH |
3058 | struct group_dpif *group; |
3059 | bool got_group; | |
3060 | ||
3061 | got_group = group_dpif_lookup(ctx->xbridge->ofproto, group_id, &group); | |
3062 | if (got_group) { | |
3063 | xlate_group_action__(ctx, group); | |
3064 | } else { | |
3065 | return true; | |
3066 | } | |
3067 | } | |
3068 | ||
3069 | return false; | |
3070 | } | |
3071 | ||
9583bc14 EJ |
3072 | static void |
3073 | xlate_ofpact_resubmit(struct xlate_ctx *ctx, | |
3074 | const struct ofpact_resubmit *resubmit) | |
3075 | { | |
4e022ec0 | 3076 | ofp_port_t in_port; |
9583bc14 | 3077 | uint8_t table_id; |
adcf00ba AZ |
3078 | bool may_packet_in = false; |
3079 | bool honor_table_miss = false; | |
3080 | ||
3081 | if (ctx->rule && rule_dpif_is_internal(ctx->rule)) { | |
3082 | /* Still allow missed packets to be sent to the controller | |
3083 | * if resubmitting from an internal table. */ | |
3084 | may_packet_in = true; | |
3085 | honor_table_miss = true; | |
3086 | } | |
9583bc14 EJ |
3087 | |
3088 | in_port = resubmit->in_port; | |
3089 | if (in_port == OFPP_IN_PORT) { | |
4e022ec0 | 3090 | in_port = ctx->xin->flow.in_port.ofp_port; |
9583bc14 EJ |
3091 | } |
3092 | ||
3093 | table_id = resubmit->table_id; | |
3094 | if (table_id == 255) { | |
3095 | table_id = ctx->table_id; | |
3096 | } | |
3097 | ||
adcf00ba AZ |
3098 | xlate_table_action(ctx, in_port, table_id, may_packet_in, |
3099 | honor_table_miss); | |
9583bc14 EJ |
3100 | } |
3101 | ||
3102 | static void | |
3103 | flood_packets(struct xlate_ctx *ctx, bool all) | |
3104 | { | |
46c88433 | 3105 | const struct xport *xport; |
9583bc14 | 3106 | |
46c88433 EJ |
3107 | HMAP_FOR_EACH (xport, ofp_node, &ctx->xbridge->xports) { |
3108 | if (xport->ofp_port == ctx->xin->flow.in_port.ofp_port) { | |
9583bc14 EJ |
3109 | continue; |
3110 | } | |
3111 | ||
3112 | if (all) { | |
46c88433 EJ |
3113 | compose_output_action__(ctx, xport->ofp_port, false); |
3114 | } else if (!(xport->config & OFPUTIL_PC_NO_FLOOD)) { | |
3115 | compose_output_action(ctx, xport->ofp_port); | |
9583bc14 EJ |
3116 | } |
3117 | } | |
3118 | ||
3119 | ctx->xout->nf_output_iface = NF_OUT_FLOOD; | |
3120 | } | |
3121 | ||
3122 | static void | |
3123 | execute_controller_action(struct xlate_ctx *ctx, int len, | |
3124 | enum ofp_packet_in_reason reason, | |
3125 | uint16_t controller_id) | |
3126 | { | |
0fb7792a | 3127 | struct ofproto_packet_in *pin; |
91088554 | 3128 | struct dpif_packet *packet; |
9583bc14 | 3129 | |
04594cd5 | 3130 | ctx->xout->slow |= SLOW_CONTROLLER; |
9583bc14 EJ |
3131 | if (!ctx->xin->packet) { |
3132 | return; | |
3133 | } | |
3134 | ||
91088554 | 3135 | packet = dpif_packet_clone_from_ofpbuf(ctx->xin->packet); |
9583bc14 | 3136 | |
7fd91025 | 3137 | ctx->xout->slow |= commit_odp_actions(&ctx->xin->flow, &ctx->base_flow, |
cc377352 | 3138 | ctx->xout->odp_actions, |
d23df9a8 JR |
3139 | &ctx->xout->wc, |
3140 | ctx->xbridge->masked_set_action); | |
9583bc14 | 3141 | |
41ccaa24 | 3142 | odp_execute_actions(NULL, &packet, 1, false, |
cc377352 EJ |
3143 | ofpbuf_data(ctx->xout->odp_actions), |
3144 | ofpbuf_size(ctx->xout->odp_actions), NULL); | |
9583bc14 | 3145 | |
ada3a58d | 3146 | pin = xmalloc(sizeof *pin); |
91088554 DDP |
3147 | pin->up.packet_len = ofpbuf_size(&packet->ofpbuf); |
3148 | pin->up.packet = ofpbuf_steal_data(&packet->ofpbuf); | |
0fb7792a | 3149 | pin->up.reason = reason; |
0fb7792a | 3150 | pin->up.table_id = ctx->table_id; |
d4fa4e79 BP |
3151 | pin->up.cookie = (ctx->rule |
3152 | ? rule_dpif_get_flow_cookie(ctx->rule) | |
3153 | : OVS_BE64_MAX); | |
0fb7792a | 3154 | |
0fb7792a | 3155 | flow_get_metadata(&ctx->xin->flow, &pin->up.fmd); |
9583bc14 | 3156 | |
f11c7538 | 3157 | pin->controller_id = controller_id; |
d38a3c7b | 3158 | pin->send_len = len; |
32260212 SH |
3159 | /* If a rule is a table-miss rule then this is |
3160 | * a table-miss handled by a table-miss rule. | |
3161 | * | |
3162 | * Else, if rule is internal and has a controller action, | |
3163 | * the later being implied by the rule being processed here, | |
3164 | * then this is a table-miss handled without a table-miss rule. | |
3165 | * | |
3166 | * Otherwise this is not a table-miss. */ | |
3167 | pin->miss_type = OFPROTO_PACKET_IN_NO_MISS; | |
3168 | if (ctx->rule) { | |
3169 | if (rule_dpif_is_table_miss(ctx->rule)) { | |
3170 | pin->miss_type = OFPROTO_PACKET_IN_MISS_FLOW; | |
3171 | } else if (rule_dpif_is_internal(ctx->rule)) { | |
3172 | pin->miss_type = OFPROTO_PACKET_IN_MISS_WITHOUT_FLOW; | |
3173 | } | |
3174 | } | |
ada3a58d | 3175 | ofproto_dpif_send_packet_in(ctx->xbridge->ofproto, pin); |
91088554 | 3176 | dpif_packet_delete(packet); |
9583bc14 EJ |
3177 | } |
3178 | ||
7bbdd84f SH |
3179 | static void |
3180 | compose_recirculate_action(struct xlate_ctx *ctx, | |
3181 | const struct ofpact *ofpacts_base, | |
3182 | const struct ofpact *ofpact_current, | |
3183 | size_t ofpacts_base_len) | |
3184 | { | |
3185 | uint32_t id; | |
3186 | int error; | |
3187 | unsigned ofpacts_len; | |
3188 | struct match match; | |
3189 | struct rule *rule; | |
3190 | struct ofpbuf ofpacts; | |
3191 | ||
3192 | ctx->exit = true; | |
3193 | ||
3194 | ofpacts_len = ofpacts_base_len - | |
3195 | ((uint8_t *)ofpact_current - (uint8_t *)ofpacts_base); | |
3196 | ||
3197 | if (ctx->rule) { | |
3198 | id = rule_dpif_get_recirc_id(ctx->rule); | |
3199 | } else { | |
3200 | /* In the case where ctx has no rule then allocate a recirc id. | |
3201 | * The life-cycle of this recirc id is managed by associating it | |
3202 | * with the internal rule that is created to to handle | |
3203 | * recirculation below. | |
3204 | * | |
3205 | * The known use-case of this is packet_out which | |
3206 | * translates actions without a rule */ | |
3207 | id = ofproto_dpif_alloc_recirc_id(ctx->xbridge->ofproto); | |
3208 | } | |
3209 | if (!id) { | |
3210 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
3211 | VLOG_ERR_RL(&rl, "Failed to allocate recirculation id"); | |
3212 | return; | |
3213 | } | |
3214 | ||
3215 | match_init_catchall(&match); | |
3216 | match_set_recirc_id(&match, id); | |
3217 | ofpbuf_use_const(&ofpacts, ofpact_current, ofpacts_len); | |
3218 | error = ofproto_dpif_add_internal_flow(ctx->xbridge->ofproto, &match, | |
3219 | RECIRC_RULE_PRIORITY, | |
3220 | RECIRC_TIMEOUT, &ofpacts, &rule); | |
3221 | if (error) { | |
3222 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
3223 | VLOG_ERR_RL(&rl, "Failed to add post recirculation flow %s", | |
3224 | match_to_string(&match, 0)); | |
3225 | return; | |
3226 | } | |
3227 | /* If ctx has no rule then associate the recirc id, which | |
3228 | * was allocated above, with the internal rule. This allows | |
3229 | * the recirc id to be released when the internal rule times out. */ | |
3230 | if (!ctx->rule) { | |
3231 | rule_set_recirc_id(rule, id); | |
3232 | } | |
3233 | ||
3234 | ctx->xout->slow |= commit_odp_actions(&ctx->xin->flow, &ctx->base_flow, | |
cc377352 | 3235 | ctx->xout->odp_actions, |
d23df9a8 JR |
3236 | &ctx->xout->wc, |
3237 | ctx->xbridge->masked_set_action); | |
cc377352 | 3238 | nl_msg_put_u32(ctx->xout->odp_actions, OVS_ACTION_ATTR_RECIRC, id); |
7bbdd84f SH |
3239 | } |
3240 | ||
8bfd0fda BP |
3241 | static void |
3242 | compose_mpls_push_action(struct xlate_ctx *ctx, struct ofpact_push_mpls *mpls) | |
9583bc14 | 3243 | { |
33bf9176 BP |
3244 | struct flow_wildcards *wc = &ctx->xout->wc; |
3245 | struct flow *flow = &ctx->xin->flow; | |
8bfd0fda | 3246 | int n; |
33bf9176 | 3247 | |
8bfd0fda | 3248 | ovs_assert(eth_type_mpls(mpls->ethertype)); |
b0a17866 | 3249 | |
8bfd0fda BP |
3250 | n = flow_count_mpls_labels(flow, wc); |
3251 | if (!n) { | |
8bfd0fda | 3252 | ctx->xout->slow |= commit_odp_actions(flow, &ctx->base_flow, |
cc377352 | 3253 | ctx->xout->odp_actions, |
d23df9a8 JR |
3254 | &ctx->xout->wc, |
3255 | ctx->xbridge->masked_set_action); | |
8bfd0fda BP |
3256 | } else if (n >= FLOW_MAX_MPLS_LABELS) { |
3257 | if (ctx->xin->packet != NULL) { | |
3258 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
3259 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet on which an " | |
3260 | "MPLS push action can't be performed as it would " | |
3261 | "have more MPLS LSEs than the %d supported.", | |
3262 | ctx->xbridge->name, FLOW_MAX_MPLS_LABELS); | |
9583bc14 | 3263 | } |
8bfd0fda BP |
3264 | ctx->exit = true; |
3265 | return; | |
3266 | } else if (n >= ctx->xbridge->max_mpls_depth) { | |
3267 | COVERAGE_INC(xlate_actions_mpls_overflow); | |
3268 | ctx->xout->slow |= SLOW_ACTION; | |
9583bc14 | 3269 | } |
b0a17866 | 3270 | |
8bfd0fda | 3271 | flow_push_mpls(flow, n, mpls->ethertype, wc); |
9583bc14 EJ |
3272 | } |
3273 | ||
8bfd0fda | 3274 | static void |
9cfef3d0 | 3275 | compose_mpls_pop_action(struct xlate_ctx *ctx, ovs_be16 eth_type) |
9583bc14 | 3276 | { |
33bf9176 | 3277 | struct flow_wildcards *wc = &ctx->xout->wc; |
8bfd0fda BP |
3278 | struct flow *flow = &ctx->xin->flow; |
3279 | int n = flow_count_mpls_labels(flow, wc); | |
33bf9176 | 3280 | |
7bbdd84f SH |
3281 | if (flow_pop_mpls(flow, n, eth_type, wc)) { |
3282 | if (ctx->xbridge->enable_recirc && !eth_type_mpls(eth_type)) { | |
3283 | ctx->was_mpls = true; | |
3284 | } | |
3285 | } else if (n >= FLOW_MAX_MPLS_LABELS) { | |
8bfd0fda BP |
3286 | if (ctx->xin->packet != NULL) { |
3287 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
3288 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet on which an " | |
3289 | "MPLS pop action can't be performed as it has " | |
3290 | "more MPLS LSEs than the %d supported.", | |
3291 | ctx->xbridge->name, FLOW_MAX_MPLS_LABELS); | |
3292 | } | |
3293 | ctx->exit = true; | |
cc377352 | 3294 | ofpbuf_clear(ctx->xout->odp_actions); |
9583bc14 EJ |
3295 | } |
3296 | } | |
3297 | ||
3298 | static bool | |
3299 | compose_dec_ttl(struct xlate_ctx *ctx, struct ofpact_cnt_ids *ids) | |
3300 | { | |
33bf9176 BP |
3301 | struct flow *flow = &ctx->xin->flow; |
3302 | ||
3303 | if (!is_ip_any(flow)) { | |
9583bc14 EJ |
3304 | return false; |
3305 | } | |
3306 | ||
1dd35f8a | 3307 | ctx->xout->wc.masks.nw_ttl = 0xff; |
33bf9176 BP |
3308 | if (flow->nw_ttl > 1) { |
3309 | flow->nw_ttl--; | |
9583bc14 EJ |
3310 | return false; |
3311 | } else { | |
3312 | size_t i; | |
3313 | ||
3314 | for (i = 0; i < ids->n_controllers; i++) { | |
3315 | execute_controller_action(ctx, UINT16_MAX, OFPR_INVALID_TTL, | |
3316 | ids->cnt_ids[i]); | |
3317 | } | |
3318 | ||
3319 | /* Stop processing for current table. */ | |
3320 | return true; | |
3321 | } | |
3322 | } | |
3323 | ||
8bfd0fda | 3324 | static void |
097d4939 JR |
3325 | compose_set_mpls_label_action(struct xlate_ctx *ctx, ovs_be32 label) |
3326 | { | |
8bfd0fda BP |
3327 | if (eth_type_mpls(ctx->xin->flow.dl_type)) { |
3328 | ctx->xout->wc.masks.mpls_lse[0] |= htonl(MPLS_LABEL_MASK); | |
3329 | set_mpls_lse_label(&ctx->xin->flow.mpls_lse[0], label); | |
097d4939 | 3330 | } |
097d4939 JR |
3331 | } |
3332 | ||
8bfd0fda | 3333 | static void |
097d4939 JR |
3334 | compose_set_mpls_tc_action(struct xlate_ctx *ctx, uint8_t tc) |
3335 | { | |
8bfd0fda BP |
3336 | if (eth_type_mpls(ctx->xin->flow.dl_type)) { |
3337 | ctx->xout->wc.masks.mpls_lse[0] |= htonl(MPLS_TC_MASK); | |
3338 | set_mpls_lse_tc(&ctx->xin->flow.mpls_lse[0], tc); | |
097d4939 | 3339 | } |
097d4939 JR |
3340 | } |
3341 | ||
8bfd0fda | 3342 | static void |
9cfef3d0 | 3343 | compose_set_mpls_ttl_action(struct xlate_ctx *ctx, uint8_t ttl) |
9583bc14 | 3344 | { |
8bfd0fda BP |
3345 | if (eth_type_mpls(ctx->xin->flow.dl_type)) { |
3346 | ctx->xout->wc.masks.mpls_lse[0] |= htonl(MPLS_TTL_MASK); | |
3347 | set_mpls_lse_ttl(&ctx->xin->flow.mpls_lse[0], ttl); | |
b0a17866 | 3348 | } |
9583bc14 EJ |
3349 | } |
3350 | ||
3351 | static bool | |
9cfef3d0 | 3352 | compose_dec_mpls_ttl_action(struct xlate_ctx *ctx) |
9583bc14 | 3353 | { |
33bf9176 | 3354 | struct flow *flow = &ctx->xin->flow; |
1dd35f8a JP |
3355 | struct flow_wildcards *wc = &ctx->xout->wc; |
3356 | ||
8bfd0fda | 3357 | if (eth_type_mpls(flow->dl_type)) { |
22d38fca JR |
3358 | uint8_t ttl = mpls_lse_to_ttl(flow->mpls_lse[0]); |
3359 | ||
3360 | wc->masks.mpls_lse[0] |= htonl(MPLS_TTL_MASK); | |
8bfd0fda BP |
3361 | if (ttl > 1) { |
3362 | ttl--; | |
3363 | set_mpls_lse_ttl(&flow->mpls_lse[0], ttl); | |
3364 | return false; | |
3365 | } else { | |
3366 | execute_controller_action(ctx, UINT16_MAX, OFPR_INVALID_TTL, 0); | |
8bfd0fda | 3367 | } |
9583bc14 | 3368 | } |
22d38fca JR |
3369 | |
3370 | /* Stop processing for current table. */ | |
3371 | return true; | |
9583bc14 EJ |
3372 | } |
3373 | ||
3374 | static void | |
3375 | xlate_output_action(struct xlate_ctx *ctx, | |
4e022ec0 | 3376 | ofp_port_t port, uint16_t max_len, bool may_packet_in) |
9583bc14 | 3377 | { |
4e022ec0 | 3378 | ofp_port_t prev_nf_output_iface = ctx->xout->nf_output_iface; |
9583bc14 EJ |
3379 | |
3380 | ctx->xout->nf_output_iface = NF_OUT_DROP; | |
3381 | ||
3382 | switch (port) { | |
3383 | case OFPP_IN_PORT: | |
4e022ec0 | 3384 | compose_output_action(ctx, ctx->xin->flow.in_port.ofp_port); |
9583bc14 EJ |
3385 | break; |
3386 | case OFPP_TABLE: | |
4e022ec0 | 3387 | xlate_table_action(ctx, ctx->xin->flow.in_port.ofp_port, |
6d328fa2 | 3388 | 0, may_packet_in, true); |
9583bc14 EJ |
3389 | break; |
3390 | case OFPP_NORMAL: | |
3391 | xlate_normal(ctx); | |
3392 | break; | |
3393 | case OFPP_FLOOD: | |
3394 | flood_packets(ctx, false); | |
3395 | break; | |
3396 | case OFPP_ALL: | |
3397 | flood_packets(ctx, true); | |
3398 | break; | |
3399 | case OFPP_CONTROLLER: | |
3400 | execute_controller_action(ctx, max_len, OFPR_ACTION, 0); | |
3401 | break; | |
3402 | case OFPP_NONE: | |
3403 | break; | |
3404 | case OFPP_LOCAL: | |
3405 | default: | |
4e022ec0 | 3406 | if (port != ctx->xin->flow.in_port.ofp_port) { |
9583bc14 EJ |
3407 | compose_output_action(ctx, port); |
3408 | } else { | |
3409 | xlate_report(ctx, "skipping output to input port"); | |
3410 | } | |
3411 | break; | |
3412 | } | |
3413 | ||
3414 | if (prev_nf_output_iface == NF_OUT_FLOOD) { | |
3415 | ctx->xout->nf_output_iface = NF_OUT_FLOOD; | |
3416 | } else if (ctx->xout->nf_output_iface == NF_OUT_DROP) { | |
3417 | ctx->xout->nf_output_iface = prev_nf_output_iface; | |
3418 | } else if (prev_nf_output_iface != NF_OUT_DROP && | |
3419 | ctx->xout->nf_output_iface != NF_OUT_FLOOD) { | |
3420 | ctx->xout->nf_output_iface = NF_OUT_MULTI; | |
3421 | } | |
3422 | } | |
3423 | ||
3424 | static void | |
3425 | xlate_output_reg_action(struct xlate_ctx *ctx, | |
3426 | const struct ofpact_output_reg *or) | |
3427 | { | |
3428 | uint64_t port = mf_get_subfield(&or->src, &ctx->xin->flow); | |
3429 | if (port <= UINT16_MAX) { | |
3430 | union mf_subvalue value; | |
3431 | ||
3432 | memset(&value, 0xff, sizeof value); | |
3433 | mf_write_subfield_flow(&or->src, &value, &ctx->xout->wc.masks); | |
4e022ec0 AW |
3434 | xlate_output_action(ctx, u16_to_ofp(port), |
3435 | or->max_len, false); | |
9583bc14 EJ |
3436 | } |
3437 | } | |
3438 | ||
3439 | static void | |
3440 | xlate_enqueue_action(struct xlate_ctx *ctx, | |
3441 | const struct ofpact_enqueue *enqueue) | |
3442 | { | |
4e022ec0 | 3443 | ofp_port_t ofp_port = enqueue->port; |
9583bc14 EJ |
3444 | uint32_t queue_id = enqueue->queue; |
3445 | uint32_t flow_priority, priority; | |
3446 | int error; | |
3447 | ||
3448 | /* Translate queue to priority. */ | |
89a8a7f0 | 3449 | error = dpif_queue_to_priority(ctx->xbridge->dpif, queue_id, &priority); |
9583bc14 EJ |
3450 | if (error) { |
3451 | /* Fall back to ordinary output action. */ | |
3452 | xlate_output_action(ctx, enqueue->port, 0, false); | |
3453 | return; | |
3454 | } | |
3455 | ||
3456 | /* Check output port. */ | |
3457 | if (ofp_port == OFPP_IN_PORT) { | |
4e022ec0 AW |
3458 | ofp_port = ctx->xin->flow.in_port.ofp_port; |
3459 | } else if (ofp_port == ctx->xin->flow.in_port.ofp_port) { | |
9583bc14 EJ |
3460 | return; |
3461 | } | |
3462 | ||
3463 | /* Add datapath actions. */ | |
3464 | flow_priority = ctx->xin->flow.skb_priority; | |
3465 | ctx->xin->flow.skb_priority = priority; | |
3466 | compose_output_action(ctx, ofp_port); | |
3467 | ctx->xin->flow.skb_priority = flow_priority; | |
3468 | ||
3469 | /* Update NetFlow output port. */ | |
3470 | if (ctx->xout->nf_output_iface == NF_OUT_DROP) { | |
3471 | ctx->xout->nf_output_iface = ofp_port; | |
3472 | } else if (ctx->xout->nf_output_iface != NF_OUT_FLOOD) { | |
3473 | ctx->xout->nf_output_iface = NF_OUT_MULTI; | |
3474 | } | |
3475 | } | |
3476 | ||
3477 | static void | |
3478 | xlate_set_queue_action(struct xlate_ctx *ctx, uint32_t queue_id) | |
3479 | { | |
3480 | uint32_t skb_priority; | |
3481 | ||
89a8a7f0 | 3482 | if (!dpif_queue_to_priority(ctx->xbridge->dpif, queue_id, &skb_priority)) { |
9583bc14 EJ |
3483 | ctx->xin->flow.skb_priority = skb_priority; |
3484 | } else { | |
3485 | /* Couldn't translate queue to a priority. Nothing to do. A warning | |
3486 | * has already been logged. */ | |
3487 | } | |
3488 | } | |
3489 | ||
3490 | static bool | |
46c88433 | 3491 | slave_enabled_cb(ofp_port_t ofp_port, void *xbridge_) |
9583bc14 | 3492 | { |
46c88433 EJ |
3493 | const struct xbridge *xbridge = xbridge_; |
3494 | struct xport *port; | |
9583bc14 EJ |
3495 | |
3496 | switch (ofp_port) { | |
3497 | case OFPP_IN_PORT: | |
3498 | case OFPP_TABLE: | |
3499 | case OFPP_NORMAL: | |
3500 | case OFPP_FLOOD: | |
3501 | case OFPP_ALL: | |
3502 | case OFPP_NONE: | |
3503 | return true; | |
3504 | case OFPP_CONTROLLER: /* Not supported by the bundle action. */ | |
3505 | return false; | |
3506 | default: | |
46c88433 | 3507 | port = get_ofp_port(xbridge, ofp_port); |
9583bc14 EJ |
3508 | return port ? port->may_enable : false; |
3509 | } | |
3510 | } | |
3511 | ||
3512 | static void | |
3513 | xlate_bundle_action(struct xlate_ctx *ctx, | |
3514 | const struct ofpact_bundle *bundle) | |
3515 | { | |
4e022ec0 | 3516 | ofp_port_t port; |
9583bc14 EJ |
3517 | |
3518 | port = bundle_execute(bundle, &ctx->xin->flow, &ctx->xout->wc, | |
46c88433 EJ |
3519 | slave_enabled_cb, |
3520 | CONST_CAST(struct xbridge *, ctx->xbridge)); | |
9583bc14 | 3521 | if (bundle->dst.field) { |
f74e7df7 JP |
3522 | nxm_reg_load(&bundle->dst, ofp_to_u16(port), &ctx->xin->flow, |
3523 | &ctx->xout->wc); | |
9583bc14 EJ |
3524 | } else { |
3525 | xlate_output_action(ctx, port, 0, false); | |
3526 | } | |
3527 | } | |
3528 | ||
3529 | static void | |
4165b5e0 JS |
3530 | xlate_learn_action__(struct xlate_ctx *ctx, const struct ofpact_learn *learn, |
3531 | struct ofputil_flow_mod *fm, struct ofpbuf *ofpacts) | |
9583bc14 | 3532 | { |
4165b5e0 JS |
3533 | learn_execute(learn, &ctx->xin->flow, fm, ofpacts); |
3534 | if (ctx->xin->may_learn) { | |
3535 | ofproto_dpif_flow_mod(ctx->xbridge->ofproto, fm); | |
3536 | } | |
3537 | } | |
9583bc14 | 3538 | |
4165b5e0 JS |
3539 | static void |
3540 | xlate_learn_action(struct xlate_ctx *ctx, const struct ofpact_learn *learn) | |
3541 | { | |
9583bc14 | 3542 | ctx->xout->has_learn = true; |
9583bc14 EJ |
3543 | learn_mask(learn, &ctx->xout->wc); |
3544 | ||
b256dc52 JS |
3545 | if (ctx->xin->xcache) { |
3546 | struct xc_entry *entry; | |
3547 | ||
3548 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_LEARN); | |
4165b5e0 JS |
3549 | entry->u.learn.ofproto = ctx->xbridge->ofproto; |
3550 | entry->u.learn.fm = xmalloc(sizeof *entry->u.learn.fm); | |
3551 | entry->u.learn.ofpacts = ofpbuf_new(64); | |
3552 | xlate_learn_action__(ctx, learn, entry->u.learn.fm, | |
3553 | entry->u.learn.ofpacts); | |
3554 | } else if (ctx->xin->may_learn) { | |
3555 | uint64_t ofpacts_stub[1024 / 8]; | |
3556 | struct ofputil_flow_mod fm; | |
3557 | struct ofpbuf ofpacts; | |
3558 | ||
3559 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); | |
3560 | xlate_learn_action__(ctx, learn, &fm, &ofpacts); | |
3561 | ofpbuf_uninit(&ofpacts); | |
b256dc52 JS |
3562 | } |
3563 | } | |
3564 | ||
3565 | static void | |
3566 | xlate_fin_timeout__(struct rule_dpif *rule, uint16_t tcp_flags, | |
3567 | uint16_t idle_timeout, uint16_t hard_timeout) | |
3568 | { | |
3569 | if (tcp_flags & (TCP_FIN | TCP_RST)) { | |
3570 | rule_dpif_reduce_timeouts(rule, idle_timeout, hard_timeout); | |
3571 | } | |
9583bc14 EJ |
3572 | } |
3573 | ||
9583bc14 EJ |
3574 | static void |
3575 | xlate_fin_timeout(struct xlate_ctx *ctx, | |
3576 | const struct ofpact_fin_timeout *oft) | |
3577 | { | |
b256dc52 JS |
3578 | if (ctx->rule) { |
3579 | xlate_fin_timeout__(ctx->rule, ctx->xin->tcp_flags, | |
3580 | oft->fin_idle_timeout, oft->fin_hard_timeout); | |
3581 | if (ctx->xin->xcache) { | |
3582 | struct xc_entry *entry; | |
3583 | ||
3584 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_FIN_TIMEOUT); | |
83709dfa JR |
3585 | /* XC_RULE already holds a reference on the rule, none is taken |
3586 | * here. */ | |
b256dc52 JS |
3587 | entry->u.fin.rule = ctx->rule; |
3588 | entry->u.fin.idle = oft->fin_idle_timeout; | |
3589 | entry->u.fin.hard = oft->fin_hard_timeout; | |
b256dc52 | 3590 | } |
9583bc14 EJ |
3591 | } |
3592 | } | |
3593 | ||
3594 | static void | |
3595 | xlate_sample_action(struct xlate_ctx *ctx, | |
3596 | const struct ofpact_sample *os) | |
3597 | { | |
3598 | union user_action_cookie cookie; | |
3599 | /* Scale the probability from 16-bit to 32-bit while representing | |
3600 | * the same percentage. */ | |
3601 | uint32_t probability = (os->probability << 16) | os->probability; | |
3602 | ||
4b97b70d BP |
3603 | if (!ctx->xbridge->variable_length_userdata) { |
3604 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); | |
3605 | ||
3606 | VLOG_ERR_RL(&rl, "ignoring NXAST_SAMPLE action because datapath " | |
3607 | "lacks support (needs Linux 3.10+ or kernel module from " | |
3608 | "OVS 1.11+)"); | |
3609 | return; | |
3610 | } | |
3611 | ||
7fd91025 | 3612 | ctx->xout->slow |= commit_odp_actions(&ctx->xin->flow, &ctx->base_flow, |
cc377352 | 3613 | ctx->xout->odp_actions, |
d23df9a8 JR |
3614 | &ctx->xout->wc, |
3615 | ctx->xbridge->masked_set_action); | |
9583bc14 EJ |
3616 | |
3617 | compose_flow_sample_cookie(os->probability, os->collector_set_id, | |
3618 | os->obs_domain_id, os->obs_point_id, &cookie); | |
cc377352 | 3619 | compose_sample_action(ctx->xbridge, ctx->xout->odp_actions, &ctx->xin->flow, |
8b7ea2d4 WZ |
3620 | probability, &cookie, sizeof cookie.flow_sample, |
3621 | ODPP_NONE); | |
9583bc14 EJ |
3622 | } |
3623 | ||
3624 | static bool | |
46c88433 | 3625 | may_receive(const struct xport *xport, struct xlate_ctx *ctx) |
9583bc14 | 3626 | { |
bbbca389 | 3627 | if (xport->config & (is_stp(&ctx->xin->flow) |
46c88433 EJ |
3628 | ? OFPUTIL_PC_NO_RECV_STP |
3629 | : OFPUTIL_PC_NO_RECV)) { | |
9583bc14 EJ |
3630 | return false; |
3631 | } | |
3632 | ||
3633 | /* Only drop packets here if both forwarding and learning are | |
3634 | * disabled. If just learning is enabled, we need to have | |
3635 | * OFPP_NORMAL and the learning action have a look at the packet | |
3636 | * before we can drop it. */ | |
9efd308e DV |
3637 | if ((!xport_stp_forward_state(xport) && !xport_stp_learn_state(xport)) || |
3638 | (!xport_rstp_forward_state(xport) && !xport_rstp_learn_state(xport))) { | |
9583bc14 EJ |
3639 | return false; |
3640 | } | |
3641 | ||
3642 | return true; | |
3643 | } | |
3644 | ||
7fdb60a7 SH |
3645 | static void |
3646 | xlate_write_actions(struct xlate_ctx *ctx, const struct ofpact *a) | |
3647 | { | |
c61f3870 BP |
3648 | const struct ofpact_nest *on = ofpact_get_WRITE_ACTIONS(a); |
3649 | size_t on_len = ofpact_nest_get_action_len(on); | |
3650 | const struct ofpact *inner; | |
3651 | ||
3652 | /* Maintain actset_output depending on the contents of the action set: | |
3653 | * | |
3654 | * - OFPP_UNSET, if there is no "output" action. | |
3655 | * | |
3656 | * - The output port, if there is an "output" action and no "group" | |
3657 | * action. | |
3658 | * | |
3659 | * - OFPP_UNSET, if there is a "group" action. | |
3660 | */ | |
3661 | if (!ctx->action_set_has_group) { | |
3662 | OFPACT_FOR_EACH (inner, on->actions, on_len) { | |
3663 | if (inner->type == OFPACT_OUTPUT) { | |
3664 | ctx->xin->flow.actset_output = ofpact_get_OUTPUT(inner)->port; | |
3665 | } else if (inner->type == OFPACT_GROUP) { | |
3666 | ctx->xin->flow.actset_output = OFPP_UNSET; | |
3667 | ctx->action_set_has_group = true; | |
3668 | } | |
3669 | } | |
3670 | } | |
3671 | ||
3672 | ofpbuf_put(&ctx->action_set, on->actions, on_len); | |
7fdb60a7 SH |
3673 | ofpact_pad(&ctx->action_set); |
3674 | } | |
3675 | ||
3676 | static void | |
3677 | xlate_action_set(struct xlate_ctx *ctx) | |
3678 | { | |
3679 | uint64_t action_list_stub[1024 / 64]; | |
3680 | struct ofpbuf action_list; | |
3681 | ||
3682 | ofpbuf_use_stub(&action_list, action_list_stub, sizeof action_list_stub); | |
3683 | ofpacts_execute_action_set(&action_list, &ctx->action_set); | |
1f317cb5 | 3684 | do_xlate_actions(ofpbuf_data(&action_list), ofpbuf_size(&action_list), ctx); |
7fdb60a7 SH |
3685 | ofpbuf_uninit(&action_list); |
3686 | } | |
3687 | ||
7bbdd84f SH |
3688 | static bool |
3689 | ofpact_needs_recirculation_after_mpls(const struct xlate_ctx *ctx, | |
3690 | const struct ofpact *a) | |
3691 | { | |
3692 | struct flow_wildcards *wc = &ctx->xout->wc; | |
3693 | struct flow *flow = &ctx->xin->flow; | |
3694 | ||
3695 | switch (a->type) { | |
3696 | case OFPACT_OUTPUT: | |
3697 | case OFPACT_GROUP: | |
3698 | case OFPACT_CONTROLLER: | |
3699 | case OFPACT_STRIP_VLAN: | |
3700 | case OFPACT_SET_VLAN_PCP: | |
3701 | case OFPACT_SET_VLAN_VID: | |
3702 | case OFPACT_ENQUEUE: | |
3703 | case OFPACT_PUSH_VLAN: | |
3704 | case OFPACT_SET_ETH_SRC: | |
3705 | case OFPACT_SET_ETH_DST: | |
3706 | case OFPACT_SET_TUNNEL: | |
3707 | case OFPACT_SET_QUEUE: | |
3708 | case OFPACT_POP_QUEUE: | |
3709 | case OFPACT_POP_MPLS: | |
3710 | case OFPACT_DEC_MPLS_TTL: | |
3711 | case OFPACT_SET_MPLS_TTL: | |
3712 | case OFPACT_SET_MPLS_TC: | |
3713 | case OFPACT_SET_MPLS_LABEL: | |
3714 | case OFPACT_NOTE: | |
3715 | case OFPACT_OUTPUT_REG: | |
3716 | case OFPACT_EXIT: | |
3717 | case OFPACT_METER: | |
3718 | case OFPACT_WRITE_METADATA: | |
3719 | case OFPACT_WRITE_ACTIONS: | |
3720 | case OFPACT_CLEAR_ACTIONS: | |
3721 | case OFPACT_SAMPLE: | |
3722 | return false; | |
3723 | ||
3724 | case OFPACT_SET_IPV4_SRC: | |
3725 | case OFPACT_SET_IPV4_DST: | |
3726 | case OFPACT_SET_IP_DSCP: | |
3727 | case OFPACT_SET_IP_ECN: | |
3728 | case OFPACT_SET_IP_TTL: | |
3729 | case OFPACT_SET_L4_SRC_PORT: | |
3730 | case OFPACT_SET_L4_DST_PORT: | |
3731 | case OFPACT_RESUBMIT: | |
3732 | case OFPACT_STACK_PUSH: | |
3733 | case OFPACT_STACK_POP: | |
3734 | case OFPACT_DEC_TTL: | |
3735 | case OFPACT_MULTIPATH: | |
3736 | case OFPACT_BUNDLE: | |
3737 | case OFPACT_LEARN: | |
3738 | case OFPACT_FIN_TIMEOUT: | |
3739 | case OFPACT_GOTO_TABLE: | |
3740 | return true; | |
3741 | ||
3742 | case OFPACT_REG_MOVE: | |
3743 | return (mf_is_l3_or_higher(ofpact_get_REG_MOVE(a)->dst.field) || | |
3744 | mf_is_l3_or_higher(ofpact_get_REG_MOVE(a)->src.field)); | |
3745 | ||
7bbdd84f SH |
3746 | case OFPACT_SET_FIELD: |
3747 | return mf_is_l3_or_higher(ofpact_get_SET_FIELD(a)->field); | |
3748 | ||
3749 | case OFPACT_PUSH_MPLS: | |
3750 | /* Recirculate if it is an IP packet with a zero ttl. This may | |
3751 | * indicate that the packet was previously MPLS and an MPLS pop action | |
3752 | * converted it to IP. In this case recirculating should reveal the IP | |
3753 | * TTL which is used as the basis for a new MPLS LSE. */ | |
3754 | return (!flow_count_mpls_labels(flow, wc) | |
3755 | && flow->nw_ttl == 0 | |
3756 | && is_ip_any(flow)); | |
3757 | } | |
3758 | ||
3759 | OVS_NOT_REACHED(); | |
3760 | } | |
3761 | ||
9583bc14 EJ |
3762 | static void |
3763 | do_xlate_actions(const struct ofpact *ofpacts, size_t ofpacts_len, | |
3764 | struct xlate_ctx *ctx) | |
3765 | { | |
33bf9176 BP |
3766 | struct flow_wildcards *wc = &ctx->xout->wc; |
3767 | struct flow *flow = &ctx->xin->flow; | |
9583bc14 EJ |
3768 | const struct ofpact *a; |
3769 | ||
a36de779 PS |
3770 | if (ovs_native_tunneling_is_on(ctx->xbridge->ofproto)) { |
3771 | tnl_arp_snoop(flow, wc, ctx->xbridge->name); | |
3772 | } | |
f47ea021 JR |
3773 | /* dl_type already in the mask, not set below. */ |
3774 | ||
9583bc14 EJ |
3775 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { |
3776 | struct ofpact_controller *controller; | |
3777 | const struct ofpact_metadata *metadata; | |
b2dd70be JR |
3778 | const struct ofpact_set_field *set_field; |
3779 | const struct mf_field *mf; | |
9583bc14 EJ |
3780 | |
3781 | if (ctx->exit) { | |
3782 | break; | |
3783 | } | |
3784 | ||
7bbdd84f SH |
3785 | if (ctx->was_mpls && ofpact_needs_recirculation_after_mpls(ctx, a)) { |
3786 | compose_recirculate_action(ctx, ofpacts, a, ofpacts_len); | |
3787 | return; | |
3788 | } | |
3789 | ||
9583bc14 EJ |
3790 | switch (a->type) { |
3791 | case OFPACT_OUTPUT: | |
3792 | xlate_output_action(ctx, ofpact_get_OUTPUT(a)->port, | |
3793 | ofpact_get_OUTPUT(a)->max_len, true); | |
3794 | break; | |
3795 | ||
7395c052 | 3796 | case OFPACT_GROUP: |
f4fb341b SH |
3797 | if (xlate_group_action(ctx, ofpact_get_GROUP(a)->group_id)) { |
3798 | return; | |
3799 | } | |
7395c052 NZ |
3800 | break; |
3801 | ||
9583bc14 EJ |
3802 | case OFPACT_CONTROLLER: |
3803 | controller = ofpact_get_CONTROLLER(a); | |
3804 | execute_controller_action(ctx, controller->max_len, | |
3805 | controller->reason, | |
3806 | controller->controller_id); | |
3807 | break; | |
3808 | ||
3809 | case OFPACT_ENQUEUE: | |
16194afd DDP |
3810 | memset(&wc->masks.skb_priority, 0xff, |
3811 | sizeof wc->masks.skb_priority); | |
9583bc14 EJ |
3812 | xlate_enqueue_action(ctx, ofpact_get_ENQUEUE(a)); |
3813 | break; | |
3814 | ||
3815 | case OFPACT_SET_VLAN_VID: | |
f74e7df7 | 3816 | wc->masks.vlan_tci |= htons(VLAN_VID_MASK | VLAN_CFI); |
ca287d20 JR |
3817 | if (flow->vlan_tci & htons(VLAN_CFI) || |
3818 | ofpact_get_SET_VLAN_VID(a)->push_vlan_if_needed) { | |
3819 | flow->vlan_tci &= ~htons(VLAN_VID_MASK); | |
3820 | flow->vlan_tci |= (htons(ofpact_get_SET_VLAN_VID(a)->vlan_vid) | |
3821 | | htons(VLAN_CFI)); | |
3822 | } | |
9583bc14 EJ |
3823 | break; |
3824 | ||
3825 | case OFPACT_SET_VLAN_PCP: | |
f74e7df7 | 3826 | wc->masks.vlan_tci |= htons(VLAN_PCP_MASK | VLAN_CFI); |
ca287d20 JR |
3827 | if (flow->vlan_tci & htons(VLAN_CFI) || |
3828 | ofpact_get_SET_VLAN_PCP(a)->push_vlan_if_needed) { | |
3829 | flow->vlan_tci &= ~htons(VLAN_PCP_MASK); | |
3830 | flow->vlan_tci |= htons((ofpact_get_SET_VLAN_PCP(a)->vlan_pcp | |
3831 | << VLAN_PCP_SHIFT) | VLAN_CFI); | |
3832 | } | |
9583bc14 EJ |
3833 | break; |
3834 | ||
3835 | case OFPACT_STRIP_VLAN: | |
f74e7df7 | 3836 | memset(&wc->masks.vlan_tci, 0xff, sizeof wc->masks.vlan_tci); |
33bf9176 | 3837 | flow->vlan_tci = htons(0); |
9583bc14 EJ |
3838 | break; |
3839 | ||
3840 | case OFPACT_PUSH_VLAN: | |
3841 | /* XXX 802.1AD(QinQ) */ | |
f74e7df7 | 3842 | memset(&wc->masks.vlan_tci, 0xff, sizeof wc->masks.vlan_tci); |
33bf9176 | 3843 | flow->vlan_tci = htons(VLAN_CFI); |
9583bc14 EJ |
3844 | break; |
3845 | ||
3846 | case OFPACT_SET_ETH_SRC: | |
f74e7df7 | 3847 | memset(&wc->masks.dl_src, 0xff, sizeof wc->masks.dl_src); |
33bf9176 | 3848 | memcpy(flow->dl_src, ofpact_get_SET_ETH_SRC(a)->mac, ETH_ADDR_LEN); |
9583bc14 EJ |
3849 | break; |
3850 | ||
3851 | case OFPACT_SET_ETH_DST: | |
f74e7df7 | 3852 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); |
33bf9176 | 3853 | memcpy(flow->dl_dst, ofpact_get_SET_ETH_DST(a)->mac, ETH_ADDR_LEN); |
9583bc14 EJ |
3854 | break; |
3855 | ||
3856 | case OFPACT_SET_IPV4_SRC: | |
33bf9176 | 3857 | if (flow->dl_type == htons(ETH_TYPE_IP)) { |
f47ea021 | 3858 | memset(&wc->masks.nw_src, 0xff, sizeof wc->masks.nw_src); |
33bf9176 | 3859 | flow->nw_src = ofpact_get_SET_IPV4_SRC(a)->ipv4; |
9583bc14 EJ |
3860 | } |
3861 | break; | |
3862 | ||
3863 | case OFPACT_SET_IPV4_DST: | |
33bf9176 | 3864 | if (flow->dl_type == htons(ETH_TYPE_IP)) { |
f47ea021 | 3865 | memset(&wc->masks.nw_dst, 0xff, sizeof wc->masks.nw_dst); |
33bf9176 | 3866 | flow->nw_dst = ofpact_get_SET_IPV4_DST(a)->ipv4; |
9583bc14 EJ |
3867 | } |
3868 | break; | |
3869 | ||
04f01c24 BP |
3870 | case OFPACT_SET_IP_DSCP: |
3871 | if (is_ip_any(flow)) { | |
f47ea021 | 3872 | wc->masks.nw_tos |= IP_DSCP_MASK; |
33bf9176 | 3873 | flow->nw_tos &= ~IP_DSCP_MASK; |
04f01c24 | 3874 | flow->nw_tos |= ofpact_get_SET_IP_DSCP(a)->dscp; |
9583bc14 EJ |
3875 | } |
3876 | break; | |
3877 | ||
ff14eb7a JR |
3878 | case OFPACT_SET_IP_ECN: |
3879 | if (is_ip_any(flow)) { | |
3880 | wc->masks.nw_tos |= IP_ECN_MASK; | |
3881 | flow->nw_tos &= ~IP_ECN_MASK; | |
3882 | flow->nw_tos |= ofpact_get_SET_IP_ECN(a)->ecn; | |
3883 | } | |
3884 | break; | |
3885 | ||
0c20dbe4 JR |
3886 | case OFPACT_SET_IP_TTL: |
3887 | if (is_ip_any(flow)) { | |
3888 | wc->masks.nw_ttl = 0xff; | |
3889 | flow->nw_ttl = ofpact_get_SET_IP_TTL(a)->ttl; | |
3890 | } | |
3891 | break; | |
3892 | ||
9583bc14 | 3893 | case OFPACT_SET_L4_SRC_PORT: |
b8778a0d | 3894 | if (is_ip_any(flow) && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) { |
f47ea021 JR |
3895 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); |
3896 | memset(&wc->masks.tp_src, 0xff, sizeof wc->masks.tp_src); | |
33bf9176 | 3897 | flow->tp_src = htons(ofpact_get_SET_L4_SRC_PORT(a)->port); |
9583bc14 EJ |
3898 | } |
3899 | break; | |
3900 | ||
3901 | case OFPACT_SET_L4_DST_PORT: | |
b8778a0d | 3902 | if (is_ip_any(flow) && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) { |
f47ea021 JR |
3903 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); |
3904 | memset(&wc->masks.tp_dst, 0xff, sizeof wc->masks.tp_dst); | |
33bf9176 | 3905 | flow->tp_dst = htons(ofpact_get_SET_L4_DST_PORT(a)->port); |
9583bc14 EJ |
3906 | } |
3907 | break; | |
3908 | ||
3909 | case OFPACT_RESUBMIT: | |
3910 | xlate_ofpact_resubmit(ctx, ofpact_get_RESUBMIT(a)); | |
3911 | break; | |
3912 | ||
3913 | case OFPACT_SET_TUNNEL: | |
33bf9176 | 3914 | flow->tunnel.tun_id = htonll(ofpact_get_SET_TUNNEL(a)->tun_id); |
9583bc14 EJ |
3915 | break; |
3916 | ||
3917 | case OFPACT_SET_QUEUE: | |
16194afd DDP |
3918 | memset(&wc->masks.skb_priority, 0xff, |
3919 | sizeof wc->masks.skb_priority); | |
9583bc14 EJ |
3920 | xlate_set_queue_action(ctx, ofpact_get_SET_QUEUE(a)->queue_id); |
3921 | break; | |
3922 | ||
3923 | case OFPACT_POP_QUEUE: | |
16194afd DDP |
3924 | memset(&wc->masks.skb_priority, 0xff, |
3925 | sizeof wc->masks.skb_priority); | |
33bf9176 | 3926 | flow->skb_priority = ctx->orig_skb_priority; |
9583bc14 EJ |
3927 | break; |
3928 | ||
3929 | case OFPACT_REG_MOVE: | |
33bf9176 | 3930 | nxm_execute_reg_move(ofpact_get_REG_MOVE(a), flow, wc); |
9583bc14 EJ |
3931 | break; |
3932 | ||
b2dd70be JR |
3933 | case OFPACT_SET_FIELD: |
3934 | set_field = ofpact_get_SET_FIELD(a); | |
3935 | mf = set_field->field; | |
b2dd70be JR |
3936 | |
3937 | /* Set field action only ever overwrites packet's outermost | |
3938 | * applicable header fields. Do nothing if no header exists. */ | |
4479846e JR |
3939 | if (mf->id == MFF_VLAN_VID) { |
3940 | wc->masks.vlan_tci |= htons(VLAN_CFI); | |
3941 | if (!(flow->vlan_tci & htons(VLAN_CFI))) { | |
3942 | break; | |
3943 | } | |
3944 | } else if ((mf->id == MFF_MPLS_LABEL || mf->id == MFF_MPLS_TC) | |
3945 | /* 'dl_type' is already unwildcarded. */ | |
3946 | && !eth_type_mpls(flow->dl_type)) { | |
3947 | break; | |
b2dd70be | 3948 | } |
b8778a0d JR |
3949 | /* A flow may wildcard nw_frag. Do nothing if setting a trasport |
3950 | * header field on a packet that does not have them. */ | |
4479846e | 3951 | mf_mask_field_and_prereqs(mf, &wc->masks); |
b8778a0d JR |
3952 | if (mf_are_prereqs_ok(mf, flow)) { |
3953 | mf_set_flow_value_masked(mf, &set_field->value, | |
3954 | &set_field->mask, flow); | |
3955 | } | |
b2dd70be JR |
3956 | break; |
3957 | ||
9583bc14 | 3958 | case OFPACT_STACK_PUSH: |
33bf9176 BP |
3959 | nxm_execute_stack_push(ofpact_get_STACK_PUSH(a), flow, wc, |
3960 | &ctx->stack); | |
9583bc14 EJ |
3961 | break; |
3962 | ||
3963 | case OFPACT_STACK_POP: | |
f74e7df7 JP |
3964 | nxm_execute_stack_pop(ofpact_get_STACK_POP(a), flow, wc, |
3965 | &ctx->stack); | |
9583bc14 EJ |
3966 | break; |
3967 | ||
3968 | case OFPACT_PUSH_MPLS: | |
8bfd0fda | 3969 | compose_mpls_push_action(ctx, ofpact_get_PUSH_MPLS(a)); |
9583bc14 EJ |
3970 | break; |
3971 | ||
3972 | case OFPACT_POP_MPLS: | |
8bfd0fda | 3973 | compose_mpls_pop_action(ctx, ofpact_get_POP_MPLS(a)->ethertype); |
9583bc14 EJ |
3974 | break; |
3975 | ||
097d4939 | 3976 | case OFPACT_SET_MPLS_LABEL: |
8bfd0fda BP |
3977 | compose_set_mpls_label_action( |
3978 | ctx, ofpact_get_SET_MPLS_LABEL(a)->label); | |
3979 | break; | |
097d4939 JR |
3980 | |
3981 | case OFPACT_SET_MPLS_TC: | |
8bfd0fda | 3982 | compose_set_mpls_tc_action(ctx, ofpact_get_SET_MPLS_TC(a)->tc); |
097d4939 JR |
3983 | break; |
3984 | ||
9583bc14 | 3985 | case OFPACT_SET_MPLS_TTL: |
8bfd0fda | 3986 | compose_set_mpls_ttl_action(ctx, ofpact_get_SET_MPLS_TTL(a)->ttl); |
9583bc14 EJ |
3987 | break; |
3988 | ||
3989 | case OFPACT_DEC_MPLS_TTL: | |
9cfef3d0 | 3990 | if (compose_dec_mpls_ttl_action(ctx)) { |
ad3efdcb | 3991 | return; |
9583bc14 EJ |
3992 | } |
3993 | break; | |
3994 | ||
3995 | case OFPACT_DEC_TTL: | |
f74e7df7 | 3996 | wc->masks.nw_ttl = 0xff; |
9583bc14 | 3997 | if (compose_dec_ttl(ctx, ofpact_get_DEC_TTL(a))) { |
ad3efdcb | 3998 | return; |
9583bc14 EJ |
3999 | } |
4000 | break; | |
4001 | ||
4002 | case OFPACT_NOTE: | |
4003 | /* Nothing to do. */ | |
4004 | break; | |
4005 | ||
4006 | case OFPACT_MULTIPATH: | |
33bf9176 | 4007 | multipath_execute(ofpact_get_MULTIPATH(a), flow, wc); |
9583bc14 EJ |
4008 | break; |
4009 | ||
4010 | case OFPACT_BUNDLE: | |
9583bc14 EJ |
4011 | xlate_bundle_action(ctx, ofpact_get_BUNDLE(a)); |
4012 | break; | |
4013 | ||
4014 | case OFPACT_OUTPUT_REG: | |
4015 | xlate_output_reg_action(ctx, ofpact_get_OUTPUT_REG(a)); | |
4016 | break; | |
4017 | ||
4018 | case OFPACT_LEARN: | |
4019 | xlate_learn_action(ctx, ofpact_get_LEARN(a)); | |
4020 | break; | |
4021 | ||
4022 | case OFPACT_EXIT: | |
4023 | ctx->exit = true; | |
4024 | break; | |
4025 | ||
4026 | case OFPACT_FIN_TIMEOUT: | |
33bf9176 | 4027 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); |
9583bc14 EJ |
4028 | ctx->xout->has_fin_timeout = true; |
4029 | xlate_fin_timeout(ctx, ofpact_get_FIN_TIMEOUT(a)); | |
4030 | break; | |
4031 | ||
4032 | case OFPACT_CLEAR_ACTIONS: | |
7fdb60a7 | 4033 | ofpbuf_clear(&ctx->action_set); |
c61f3870 BP |
4034 | ctx->xin->flow.actset_output = OFPP_UNSET; |
4035 | ctx->action_set_has_group = false; | |
7fdb60a7 SH |
4036 | break; |
4037 | ||
4038 | case OFPACT_WRITE_ACTIONS: | |
4039 | xlate_write_actions(ctx, a); | |
9583bc14 EJ |
4040 | break; |
4041 | ||
4042 | case OFPACT_WRITE_METADATA: | |
4043 | metadata = ofpact_get_WRITE_METADATA(a); | |
33bf9176 BP |
4044 | flow->metadata &= ~metadata->mask; |
4045 | flow->metadata |= metadata->metadata & metadata->mask; | |
9583bc14 EJ |
4046 | break; |
4047 | ||
638a19b0 JR |
4048 | case OFPACT_METER: |
4049 | /* Not implemented yet. */ | |
4050 | break; | |
4051 | ||
9583bc14 | 4052 | case OFPACT_GOTO_TABLE: { |
9583bc14 | 4053 | struct ofpact_goto_table *ogt = ofpact_get_GOTO_TABLE(a); |
9583bc14 | 4054 | |
7bbdd84f SH |
4055 | /* Allow ctx->table_id == TBL_INTERNAL, which will be greater |
4056 | * than ogt->table_id. This is to allow goto_table actions that | |
4057 | * triggered recirculation: ctx->table_id will be TBL_INTERNAL | |
4058 | * after recirculation. */ | |
4059 | ovs_assert(ctx->table_id == TBL_INTERNAL | |
4060 | || ctx->table_id < ogt->table_id); | |
4468099e | 4061 | xlate_table_action(ctx, ctx->xin->flow.in_port.ofp_port, |
6d328fa2 | 4062 | ogt->table_id, true, true); |
9583bc14 EJ |
4063 | break; |
4064 | } | |
4065 | ||
4066 | case OFPACT_SAMPLE: | |
4067 | xlate_sample_action(ctx, ofpact_get_SAMPLE(a)); | |
4068 | break; | |
4069 | } | |
4070 | } | |
9583bc14 EJ |
4071 | } |
4072 | ||
4073 | void | |
4074 | xlate_in_init(struct xlate_in *xin, struct ofproto_dpif *ofproto, | |
cc377352 EJ |
4075 | const struct flow *flow, ofp_port_t in_port, |
4076 | struct rule_dpif *rule, uint16_t tcp_flags, | |
4077 | const struct ofpbuf *packet) | |
9583bc14 EJ |
4078 | { |
4079 | xin->ofproto = ofproto; | |
4080 | xin->flow = *flow; | |
cc377352 | 4081 | xin->flow.in_port.ofp_port = in_port; |
c61f3870 | 4082 | xin->flow.actset_output = OFPP_UNSET; |
9583bc14 EJ |
4083 | xin->packet = packet; |
4084 | xin->may_learn = packet != NULL; | |
4085 | xin->rule = rule; | |
b256dc52 | 4086 | xin->xcache = NULL; |
9583bc14 EJ |
4087 | xin->ofpacts = NULL; |
4088 | xin->ofpacts_len = 0; | |
4089 | xin->tcp_flags = tcp_flags; | |
4090 | xin->resubmit_hook = NULL; | |
4091 | xin->report_hook = NULL; | |
4092 | xin->resubmit_stats = NULL; | |
3f207910 | 4093 | xin->skip_wildcards = false; |
cc377352 | 4094 | xin->odp_actions = NULL; |
9583bc14 EJ |
4095 | } |
4096 | ||
4097 | void | |
4098 | xlate_out_uninit(struct xlate_out *xout) | |
4099 | { | |
cc377352 EJ |
4100 | if (xout && xout->odp_actions == &xout->odp_actions_buf) { |
4101 | ofpbuf_uninit(xout->odp_actions); | |
9583bc14 EJ |
4102 | } |
4103 | } | |
4104 | ||
4105 | /* Translates the 'ofpacts_len' bytes of "struct ofpact"s starting at 'ofpacts' | |
4106 | * into datapath actions, using 'ctx', and discards the datapath actions. */ | |
4107 | void | |
4108 | xlate_actions_for_side_effects(struct xlate_in *xin) | |
4109 | { | |
4110 | struct xlate_out xout; | |
4111 | ||
4112 | xlate_actions(xin, &xout); | |
4113 | xlate_out_uninit(&xout); | |
4114 | } | |
4115 | ||
9583bc14 EJ |
4116 | void |
4117 | xlate_out_copy(struct xlate_out *dst, const struct xlate_out *src) | |
4118 | { | |
4119 | dst->wc = src->wc; | |
9583bc14 EJ |
4120 | dst->slow = src->slow; |
4121 | dst->has_learn = src->has_learn; | |
4122 | dst->has_normal = src->has_normal; | |
4123 | dst->has_fin_timeout = src->has_fin_timeout; | |
4124 | dst->nf_output_iface = src->nf_output_iface; | |
4125 | dst->mirrors = src->mirrors; | |
4126 | ||
cc377352 EJ |
4127 | dst->odp_actions = &dst->odp_actions_buf; |
4128 | ofpbuf_use_stub(dst->odp_actions, dst->odp_actions_stub, | |
9583bc14 | 4129 | sizeof dst->odp_actions_stub); |
cc377352 EJ |
4130 | ofpbuf_put(dst->odp_actions, ofpbuf_data(src->odp_actions), |
4131 | ofpbuf_size(src->odp_actions)); | |
9583bc14 EJ |
4132 | } |
4133 | \f | |
55954f6e EJ |
4134 | static struct skb_priority_to_dscp * |
4135 | get_skb_priority(const struct xport *xport, uint32_t skb_priority) | |
4136 | { | |
4137 | struct skb_priority_to_dscp *pdscp; | |
4138 | uint32_t hash; | |
4139 | ||
4140 | hash = hash_int(skb_priority, 0); | |
4141 | HMAP_FOR_EACH_IN_BUCKET (pdscp, hmap_node, hash, &xport->skb_priorities) { | |
4142 | if (pdscp->skb_priority == skb_priority) { | |
4143 | return pdscp; | |
4144 | } | |
4145 | } | |
4146 | return NULL; | |
4147 | } | |
4148 | ||
4149 | static bool | |
4150 | dscp_from_skb_priority(const struct xport *xport, uint32_t skb_priority, | |
4151 | uint8_t *dscp) | |
4152 | { | |
4153 | struct skb_priority_to_dscp *pdscp = get_skb_priority(xport, skb_priority); | |
4154 | *dscp = pdscp ? pdscp->dscp : 0; | |
4155 | return pdscp != NULL; | |
4156 | } | |
4157 | ||
16194afd DDP |
4158 | static size_t |
4159 | count_skb_priorities(const struct xport *xport) | |
4160 | { | |
4161 | return hmap_count(&xport->skb_priorities); | |
4162 | } | |
4163 | ||
55954f6e EJ |
4164 | static void |
4165 | clear_skb_priorities(struct xport *xport) | |
4166 | { | |
4167 | struct skb_priority_to_dscp *pdscp, *next; | |
4168 | ||
4169 | HMAP_FOR_EACH_SAFE (pdscp, next, hmap_node, &xport->skb_priorities) { | |
4170 | hmap_remove(&xport->skb_priorities, &pdscp->hmap_node); | |
4171 | free(pdscp); | |
4172 | } | |
4173 | } | |
4174 | ||
ce4a6b76 BP |
4175 | static bool |
4176 | actions_output_to_local_port(const struct xlate_ctx *ctx) | |
4177 | { | |
46c88433 | 4178 | odp_port_t local_odp_port = ofp_port_to_odp_port(ctx->xbridge, OFPP_LOCAL); |
ce4a6b76 BP |
4179 | const struct nlattr *a; |
4180 | unsigned int left; | |
4181 | ||
cc377352 EJ |
4182 | NL_ATTR_FOR_EACH_UNSAFE (a, left, ofpbuf_data(ctx->xout->odp_actions), |
4183 | ofpbuf_size(ctx->xout->odp_actions)) { | |
ce4a6b76 BP |
4184 | if (nl_attr_type(a) == OVS_ACTION_ATTR_OUTPUT |
4185 | && nl_attr_get_odp_port(a) == local_odp_port) { | |
4186 | return true; | |
4187 | } | |
4188 | } | |
4189 | return false; | |
4190 | } | |
9583bc14 | 4191 | |
5e2a6702 | 4192 | #if defined(__linux__) |
7d031d7e BP |
4193 | /* Returns the maximum number of packets that the Linux kernel is willing to |
4194 | * queue up internally to certain kinds of software-implemented ports, or the | |
4195 | * default (and rarely modified) value if it cannot be determined. */ | |
4196 | static int | |
4197 | netdev_max_backlog(void) | |
4198 | { | |
4199 | static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER; | |
4200 | static int max_backlog = 1000; /* The normal default value. */ | |
4201 | ||
4202 | if (ovsthread_once_start(&once)) { | |
4203 | static const char filename[] = "/proc/sys/net/core/netdev_max_backlog"; | |
4204 | FILE *stream; | |
4205 | int n; | |
4206 | ||
4207 | stream = fopen(filename, "r"); | |
4208 | if (!stream) { | |
4209 | VLOG_WARN("%s: open failed (%s)", filename, ovs_strerror(errno)); | |
4210 | } else { | |
4211 | if (fscanf(stream, "%d", &n) != 1) { | |
4212 | VLOG_WARN("%s: read error", filename); | |
4213 | } else if (n <= 100) { | |
4214 | VLOG_WARN("%s: unexpectedly small value %d", filename, n); | |
4215 | } else { | |
4216 | max_backlog = n; | |
4217 | } | |
4218 | fclose(stream); | |
4219 | } | |
4220 | ovsthread_once_done(&once); | |
4221 | ||
4222 | VLOG_DBG("%s: using %d max_backlog", filename, max_backlog); | |
4223 | } | |
4224 | ||
4225 | return max_backlog; | |
4226 | } | |
4227 | ||
4228 | /* Counts and returns the number of OVS_ACTION_ATTR_OUTPUT actions in | |
4229 | * 'odp_actions'. */ | |
4230 | static int | |
4231 | count_output_actions(const struct ofpbuf *odp_actions) | |
4232 | { | |
4233 | const struct nlattr *a; | |
4234 | size_t left; | |
4235 | int n = 0; | |
4236 | ||
4237 | NL_ATTR_FOR_EACH_UNSAFE (a, left, ofpbuf_data(odp_actions), | |
4238 | ofpbuf_size(odp_actions)) { | |
4239 | if (a->nla_type == OVS_ACTION_ATTR_OUTPUT) { | |
4240 | n++; | |
4241 | } | |
4242 | } | |
4243 | return n; | |
4244 | } | |
5e2a6702 | 4245 | #endif /* defined(__linux__) */ |
7d031d7e BP |
4246 | |
4247 | /* Returns true if 'odp_actions' contains more output actions than the datapath | |
4248 | * can reliably handle in one go. On Linux, this is the value of the | |
4249 | * net.core.netdev_max_backlog sysctl, which limits the maximum number of | |
4250 | * packets that the kernel is willing to queue up for processing while the | |
4251 | * datapath is processing a set of actions. */ | |
4252 | static bool | |
5e2a6702 | 4253 | too_many_output_actions(const struct ofpbuf *odp_actions OVS_UNUSED) |
7d031d7e BP |
4254 | { |
4255 | #ifdef __linux__ | |
4256 | return (ofpbuf_size(odp_actions) / NL_A_U32_SIZE > netdev_max_backlog() | |
4257 | && count_output_actions(odp_actions) > netdev_max_backlog()); | |
4258 | #else | |
4259 | /* OSes other than Linux might have similar limits, but we don't know how | |
4260 | * to determine them.*/ | |
4261 | return false; | |
4262 | #endif | |
4263 | } | |
4264 | ||
9583bc14 | 4265 | /* Translates the 'ofpacts_len' bytes of "struct ofpacts" starting at 'ofpacts' |
56450a41 BP |
4266 | * into datapath actions in 'odp_actions', using 'ctx'. |
4267 | * | |
4268 | * The caller must take responsibility for eventually freeing 'xout', with | |
4269 | * xlate_out_uninit(). */ | |
84f0f298 RW |
4270 | void |
4271 | xlate_actions(struct xlate_in *xin, struct xlate_out *xout) | |
9583bc14 | 4272 | { |
84f0f298 | 4273 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
33bf9176 BP |
4274 | struct flow_wildcards *wc = &xout->wc; |
4275 | struct flow *flow = &xin->flow; | |
10c44245 | 4276 | struct rule_dpif *rule = NULL; |
33bf9176 | 4277 | |
9583bc14 EJ |
4278 | enum slow_path_reason special; |
4279 | const struct ofpact *ofpacts; | |
46c88433 | 4280 | struct xport *in_port; |
9583bc14 EJ |
4281 | struct flow orig_flow; |
4282 | struct xlate_ctx ctx; | |
4283 | size_t ofpacts_len; | |
62a7cc71 | 4284 | bool tnl_may_send; |
c56fac1b | 4285 | bool is_icmp; |
9583bc14 | 4286 | |
46c88433 | 4287 | COVERAGE_INC(xlate_actions); |
9583bc14 EJ |
4288 | |
4289 | /* Flow initialization rules: | |
4290 | * - 'base_flow' must match the kernel's view of the packet at the | |
4291 | * time that action processing starts. 'flow' represents any | |
4292 | * transformations we wish to make through actions. | |
4293 | * - By default 'base_flow' and 'flow' are the same since the input | |
4294 | * packet matches the output before any actions are applied. | |
4295 | * - When using VLAN splinters, 'base_flow''s VLAN is set to the value | |
4296 | * of the received packet as seen by the kernel. If we later output | |
4297 | * to another device without any modifications this will cause us to | |
4298 | * insert a new tag since the original one was stripped off by the | |
4299 | * VLAN device. | |
4300 | * - Tunnel metadata as received is retained in 'flow'. This allows | |
4301 | * tunnel metadata matching also in later tables. | |
4302 | * Since a kernel action for setting the tunnel metadata will only be | |
4303 | * generated with actual tunnel output, changing the tunnel metadata | |
4304 | * values in 'flow' (such as tun_id) will only have effect with a later | |
4305 | * tunnel output action. | |
4306 | * - Tunnel 'base_flow' is completely cleared since that is what the | |
4307 | * kernel does. If we wish to maintain the original values an action | |
4308 | * needs to be generated. */ | |
4309 | ||
4310 | ctx.xin = xin; | |
4311 | ctx.xout = xout; | |
46c88433 EJ |
4312 | ctx.xout->slow = 0; |
4313 | ctx.xout->has_learn = false; | |
4314 | ctx.xout->has_normal = false; | |
4315 | ctx.xout->has_fin_timeout = false; | |
4316 | ctx.xout->nf_output_iface = NF_OUT_DROP; | |
4317 | ctx.xout->mirrors = 0; | |
cc377352 EJ |
4318 | |
4319 | xout->odp_actions = xin->odp_actions; | |
4320 | if (!xout->odp_actions) { | |
4321 | xout->odp_actions = &xout->odp_actions_buf; | |
4322 | ofpbuf_use_stub(xout->odp_actions, xout->odp_actions_stub, | |
4323 | sizeof xout->odp_actions_stub); | |
4324 | } | |
4325 | ofpbuf_reserve(xout->odp_actions, NL_A_U32_SIZE); | |
46c88433 | 4326 | |
84f0f298 | 4327 | ctx.xbridge = xbridge_lookup(xcfg, xin->ofproto); |
46c88433 | 4328 | if (!ctx.xbridge) { |
83709dfa | 4329 | return; |
46c88433 | 4330 | } |
9583bc14 | 4331 | |
9583bc14 EJ |
4332 | ctx.rule = xin->rule; |
4333 | ||
33bf9176 | 4334 | ctx.base_flow = *flow; |
9583bc14 | 4335 | memset(&ctx.base_flow.tunnel, 0, sizeof ctx.base_flow.tunnel); |
33bf9176 | 4336 | ctx.orig_tunnel_ip_dst = flow->tunnel.ip_dst; |
9583bc14 | 4337 | |
33bf9176 BP |
4338 | flow_wildcards_init_catchall(wc); |
4339 | memset(&wc->masks.in_port, 0xff, sizeof wc->masks.in_port); | |
7431e171 | 4340 | memset(&wc->masks.dl_type, 0xff, sizeof wc->masks.dl_type); |
0934ebba BP |
4341 | if (is_ip_any(flow)) { |
4342 | wc->masks.nw_frag |= FLOW_NW_FRAG_MASK; | |
4343 | } | |
c56fac1b | 4344 | is_icmp = is_icmpv4(flow) || is_icmpv6(flow); |
9583bc14 | 4345 | |
62a7cc71 | 4346 | tnl_may_send = tnl_xlate_init(&ctx.base_flow, flow, wc); |
ce3955be | 4347 | if (ctx.xbridge->netflow) { |
9b658910 | 4348 | netflow_mask_wc(flow, wc); |
9583bc14 EJ |
4349 | } |
4350 | ||
9583bc14 | 4351 | ctx.recurse = 0; |
98b07853 | 4352 | ctx.resubmits = 0; |
5a070238 | 4353 | ctx.in_group = false; |
33bf9176 | 4354 | ctx.orig_skb_priority = flow->skb_priority; |
9583bc14 EJ |
4355 | ctx.table_id = 0; |
4356 | ctx.exit = false; | |
92c08f09 | 4357 | ctx.use_recirc = false; |
7bbdd84f | 4358 | ctx.was_mpls = false; |
9583bc14 | 4359 | |
10c44245 | 4360 | if (!xin->ofpacts && !ctx.rule) { |
34dd0d78 JR |
4361 | rule = rule_dpif_lookup(ctx.xbridge->ofproto, flow, |
4362 | xin->skip_wildcards ? NULL : wc, | |
4363 | ctx.xin->xcache != NULL, | |
4364 | ctx.xin->resubmit_stats, &ctx.table_id); | |
10c44245 EJ |
4365 | if (ctx.xin->resubmit_stats) { |
4366 | rule_dpif_credit_stats(rule, ctx.xin->resubmit_stats); | |
4367 | } | |
b256dc52 JS |
4368 | if (ctx.xin->xcache) { |
4369 | struct xc_entry *entry; | |
4370 | ||
4371 | entry = xlate_cache_add_entry(ctx.xin->xcache, XC_RULE); | |
b256dc52 JS |
4372 | entry->u.rule = rule; |
4373 | } | |
10c44245 | 4374 | ctx.rule = rule; |
a8c31348 BP |
4375 | |
4376 | if (OVS_UNLIKELY(ctx.xin->resubmit_hook)) { | |
4377 | ctx.xin->resubmit_hook(ctx.xin, rule, 0); | |
4378 | } | |
10c44245 | 4379 | } |
ee1afdd5 | 4380 | xout->fail_open = ctx.rule && rule_dpif_is_fail_open(ctx.rule); |
10c44245 | 4381 | |
9583bc14 EJ |
4382 | if (xin->ofpacts) { |
4383 | ofpacts = xin->ofpacts; | |
4384 | ofpacts_len = xin->ofpacts_len; | |
10c44245 | 4385 | } else if (ctx.rule) { |
d8227eba JR |
4386 | const struct rule_actions *actions = rule_dpif_get_actions(ctx.rule); |
4387 | ||
6f00e29b BP |
4388 | ofpacts = actions->ofpacts; |
4389 | ofpacts_len = actions->ofpacts_len; | |
9583bc14 | 4390 | } else { |
428b2edd | 4391 | OVS_NOT_REACHED(); |
9583bc14 EJ |
4392 | } |
4393 | ||
4394 | ofpbuf_use_stub(&ctx.stack, ctx.init_stack, sizeof ctx.init_stack); | |
c61f3870 BP |
4395 | |
4396 | ctx.action_set_has_group = false; | |
7fdb60a7 SH |
4397 | ofpbuf_use_stub(&ctx.action_set, |
4398 | ctx.action_set_stub, sizeof ctx.action_set_stub); | |
9583bc14 | 4399 | |
ade6ad9c | 4400 | if (mbridge_has_mirrors(ctx.xbridge->mbridge)) { |
9583bc14 EJ |
4401 | /* Do this conditionally because the copy is expensive enough that it |
4402 | * shows up in profiles. */ | |
33bf9176 | 4403 | orig_flow = *flow; |
9583bc14 EJ |
4404 | } |
4405 | ||
46c88433 | 4406 | in_port = get_ofp_port(ctx.xbridge, flow->in_port.ofp_port); |
b256dc52 JS |
4407 | if (in_port && in_port->is_tunnel) { |
4408 | if (ctx.xin->resubmit_stats) { | |
4409 | netdev_vport_inc_rx(in_port->netdev, ctx.xin->resubmit_stats); | |
4410 | if (in_port->bfd) { | |
4411 | bfd_account_rx(in_port->bfd, ctx.xin->resubmit_stats); | |
4412 | } | |
4413 | } | |
4414 | if (ctx.xin->xcache) { | |
4415 | struct xc_entry *entry; | |
4416 | ||
4417 | entry = xlate_cache_add_entry(ctx.xin->xcache, XC_NETDEV); | |
4418 | entry->u.dev.rx = netdev_ref(in_port->netdev); | |
4419 | entry->u.dev.bfd = bfd_ref(in_port->bfd); | |
d6fc5f57 EJ |
4420 | } |
4421 | } | |
4422 | ||
642dc74d | 4423 | special = process_special(&ctx, flow, in_port, ctx.xin->packet); |
9583bc14 | 4424 | if (special) { |
04594cd5 | 4425 | ctx.xout->slow |= special; |
9583bc14 | 4426 | } else { |
9583bc14 | 4427 | size_t sample_actions_len; |
9583bc14 | 4428 | |
4e022ec0 | 4429 | if (flow->in_port.ofp_port |
46c88433 EJ |
4430 | != vsp_realdev_to_vlandev(ctx.xbridge->ofproto, |
4431 | flow->in_port.ofp_port, | |
33bf9176 | 4432 | flow->vlan_tci)) { |
9583bc14 EJ |
4433 | ctx.base_flow.vlan_tci = 0; |
4434 | } | |
4435 | ||
4436 | add_sflow_action(&ctx); | |
4437 | add_ipfix_action(&ctx); | |
cc377352 | 4438 | sample_actions_len = ofpbuf_size(ctx.xout->odp_actions); |
9583bc14 | 4439 | |
62a7cc71 | 4440 | if (tnl_may_send && (!in_port || may_receive(in_port, &ctx))) { |
9583bc14 EJ |
4441 | do_xlate_actions(ofpacts, ofpacts_len, &ctx); |
4442 | ||
4443 | /* We've let OFPP_NORMAL and the learning action look at the | |
4444 | * packet, so drop it now if forwarding is disabled. */ | |
9efd308e DV |
4445 | if (in_port && (!xport_stp_forward_state(in_port) || |
4446 | !xport_rstp_forward_state(in_port))) { | |
cc377352 | 4447 | ofpbuf_set_size(ctx.xout->odp_actions, sample_actions_len); |
9583bc14 EJ |
4448 | } |
4449 | } | |
4450 | ||
1f317cb5 | 4451 | if (ofpbuf_size(&ctx.action_set)) { |
7fdb60a7 SH |
4452 | xlate_action_set(&ctx); |
4453 | } | |
4454 | ||
46c88433 | 4455 | if (ctx.xbridge->has_in_band |
ce4a6b76 BP |
4456 | && in_band_must_output_to_local_port(flow) |
4457 | && !actions_output_to_local_port(&ctx)) { | |
9583bc14 EJ |
4458 | compose_output_action(&ctx, OFPP_LOCAL); |
4459 | } | |
aaa0fbae EJ |
4460 | |
4461 | fix_sflow_action(&ctx); | |
4462 | ||
46c88433 | 4463 | if (mbridge_has_mirrors(ctx.xbridge->mbridge)) { |
9583bc14 EJ |
4464 | add_mirror_actions(&ctx, &orig_flow); |
4465 | } | |
9583bc14 EJ |
4466 | } |
4467 | ||
cc377352 | 4468 | if (nl_attr_oversized(ofpbuf_size(ctx.xout->odp_actions))) { |
542024c4 | 4469 | /* These datapath actions are too big for a Netlink attribute, so we |
0f032e95 BP |
4470 | * can't hand them to the kernel directly. dpif_execute() can execute |
4471 | * them one by one with help, so just mark the result as SLOW_ACTION to | |
4472 | * prevent the flow from being installed. */ | |
4473 | COVERAGE_INC(xlate_actions_oversize); | |
4474 | ctx.xout->slow |= SLOW_ACTION; | |
7d031d7e BP |
4475 | } else if (too_many_output_actions(ctx.xout->odp_actions)) { |
4476 | COVERAGE_INC(xlate_actions_too_many_output); | |
4477 | ctx.xout->slow |= SLOW_ACTION; | |
542024c4 BP |
4478 | } |
4479 | ||
b256dc52 JS |
4480 | if (mbridge_has_mirrors(ctx.xbridge->mbridge)) { |
4481 | if (ctx.xin->resubmit_stats) { | |
4482 | mirror_update_stats(ctx.xbridge->mbridge, xout->mirrors, | |
4483 | ctx.xin->resubmit_stats->n_packets, | |
4484 | ctx.xin->resubmit_stats->n_bytes); | |
4485 | } | |
4486 | if (ctx.xin->xcache) { | |
4487 | struct xc_entry *entry; | |
4488 | ||
4489 | entry = xlate_cache_add_entry(ctx.xin->xcache, XC_MIRROR); | |
4490 | entry->u.mirror.mbridge = mbridge_ref(ctx.xbridge->mbridge); | |
4491 | entry->u.mirror.mirrors = xout->mirrors; | |
4492 | } | |
4493 | } | |
4494 | ||
4495 | if (ctx.xbridge->netflow) { | |
b256dc52 JS |
4496 | /* Only update netflow if we don't have controller flow. We don't |
4497 | * report NetFlow expiration messages for such facets because they | |
4498 | * are just part of the control logic for the network, not real | |
4499 | * traffic. */ | |
4500 | if (ofpacts_len == 0 | |
4501 | || ofpacts->type != OFPACT_CONTROLLER | |
4502 | || ofpact_next(ofpacts) < ofpact_end(ofpacts, ofpacts_len)) { | |
4503 | if (ctx.xin->resubmit_stats) { | |
d6fc5f57 EJ |
4504 | netflow_flow_update(ctx.xbridge->netflow, flow, |
4505 | xout->nf_output_iface, | |
4506 | ctx.xin->resubmit_stats); | |
4507 | } | |
b256dc52 JS |
4508 | if (ctx.xin->xcache) { |
4509 | struct xc_entry *entry; | |
4510 | ||
4511 | entry = xlate_cache_add_entry(ctx.xin->xcache, XC_NETFLOW); | |
4512 | entry->u.nf.netflow = netflow_ref(ctx.xbridge->netflow); | |
4513 | entry->u.nf.flow = xmemdup(flow, sizeof *flow); | |
4514 | entry->u.nf.iface = xout->nf_output_iface; | |
4515 | } | |
d6fc5f57 EJ |
4516 | } |
4517 | } | |
4518 | ||
9583bc14 | 4519 | ofpbuf_uninit(&ctx.stack); |
7fdb60a7 | 4520 | ofpbuf_uninit(&ctx.action_set); |
9583bc14 EJ |
4521 | |
4522 | /* Clear the metadata and register wildcard masks, because we won't | |
4523 | * use non-header fields as part of the cache. */ | |
c11c6faa | 4524 | flow_wildcards_clear_non_packet_fields(wc); |
dc24a00f | 4525 | |
c56fac1b BP |
4526 | /* ICMPv4 and ICMPv6 have 8-bit "type" and "code" fields. struct flow uses |
4527 | * the low 8 bits of the 16-bit tp_src and tp_dst members to represent | |
4528 | * these fields. The datapath interface, on the other hand, represents | |
4529 | * them with just 8 bits each. This means that if the high 8 bits of the | |
4530 | * masks for these fields somehow become set, then they will get chopped | |
4531 | * off by a round trip through the datapath, and revalidation will spot | |
4532 | * that as an inconsistency and delete the flow. Avoid the problem here by | |
4533 | * making sure that only the low 8 bits of either field can be unwildcarded | |
4534 | * for ICMP. | |
4535 | */ | |
4536 | if (is_icmp) { | |
4537 | wc->masks.tp_src &= htons(UINT8_MAX); | |
4538 | wc->masks.tp_dst &= htons(UINT8_MAX); | |
4539 | } | |
91d6cd12 AW |
4540 | } |
4541 | ||
4542 | /* Sends 'packet' out 'ofport'. | |
4543 | * May modify 'packet'. | |
4544 | * Returns 0 if successful, otherwise a positive errno value. */ | |
4545 | int | |
4546 | xlate_send_packet(const struct ofport_dpif *ofport, struct ofpbuf *packet) | |
4547 | { | |
84f0f298 | 4548 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
91d6cd12 | 4549 | struct xport *xport; |
91d6cd12 | 4550 | struct ofpact_output output; |
91d6cd12 | 4551 | struct flow flow; |
91d6cd12 | 4552 | |
91d6cd12 AW |
4553 | ofpact_init(&output.ofpact, OFPACT_OUTPUT, sizeof output); |
4554 | /* Use OFPP_NONE as the in_port to avoid special packet processing. */ | |
b5e7e61a AZ |
4555 | flow_extract(packet, NULL, &flow); |
4556 | flow.in_port.ofp_port = OFPP_NONE; | |
91d6cd12 | 4557 | |
84f0f298 | 4558 | xport = xport_lookup(xcfg, ofport); |
91d6cd12 | 4559 | if (!xport) { |
02ea2703 | 4560 | return EINVAL; |
91d6cd12 | 4561 | } |
91d6cd12 AW |
4562 | output.port = xport->ofp_port; |
4563 | output.max_len = 0; | |
e491a67a YT |
4564 | |
4565 | return ofproto_dpif_execute_actions(xport->xbridge->ofproto, &flow, NULL, | |
4566 | &output.ofpact, sizeof output, | |
4567 | packet); | |
9583bc14 | 4568 | } |
b256dc52 JS |
4569 | |
4570 | struct xlate_cache * | |
4571 | xlate_cache_new(void) | |
4572 | { | |
4573 | struct xlate_cache *xcache = xmalloc(sizeof *xcache); | |
4574 | ||
4575 | ofpbuf_init(&xcache->entries, 512); | |
4576 | return xcache; | |
4577 | } | |
4578 | ||
4579 | static struct xc_entry * | |
4580 | xlate_cache_add_entry(struct xlate_cache *xcache, enum xc_type type) | |
4581 | { | |
4582 | struct xc_entry *entry; | |
4583 | ||
4584 | entry = ofpbuf_put_zeros(&xcache->entries, sizeof *entry); | |
4585 | entry->type = type; | |
4586 | ||
4587 | return entry; | |
4588 | } | |
4589 | ||
4590 | static void | |
4591 | xlate_cache_netdev(struct xc_entry *entry, const struct dpif_flow_stats *stats) | |
4592 | { | |
4593 | if (entry->u.dev.tx) { | |
4594 | netdev_vport_inc_tx(entry->u.dev.tx, stats); | |
4595 | } | |
4596 | if (entry->u.dev.rx) { | |
4597 | netdev_vport_inc_rx(entry->u.dev.rx, stats); | |
4598 | } | |
4599 | if (entry->u.dev.bfd) { | |
4600 | bfd_account_rx(entry->u.dev.bfd, stats); | |
4601 | } | |
4602 | } | |
4603 | ||
4604 | static void | |
4605 | xlate_cache_normal(struct ofproto_dpif *ofproto, struct flow *flow, int vlan) | |
4606 | { | |
84f0f298 | 4607 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
b256dc52 JS |
4608 | struct xbridge *xbridge; |
4609 | struct xbundle *xbundle; | |
4610 | struct flow_wildcards wc; | |
4611 | ||
84f0f298 | 4612 | xbridge = xbridge_lookup(xcfg, ofproto); |
b256dc52 JS |
4613 | if (!xbridge) { |
4614 | return; | |
4615 | } | |
4616 | ||
4617 | xbundle = lookup_input_bundle(xbridge, flow->in_port.ofp_port, false, | |
4618 | NULL); | |
4619 | if (!xbundle) { | |
4620 | return; | |
4621 | } | |
4622 | ||
4623 | update_learning_table(xbridge, flow, &wc, vlan, xbundle); | |
4624 | } | |
4625 | ||
4626 | /* Push stats and perform side effects of flow translation. */ | |
4627 | void | |
0725e747 | 4628 | xlate_push_stats(struct xlate_cache *xcache, |
b256dc52 JS |
4629 | const struct dpif_flow_stats *stats) |
4630 | { | |
4631 | struct xc_entry *entry; | |
4632 | struct ofpbuf entries = xcache->entries; | |
a36de779 | 4633 | uint8_t dmac[ETH_ADDR_LEN]; |
b256dc52 | 4634 | |
bc388583 BP |
4635 | if (!stats->n_packets) { |
4636 | return; | |
4637 | } | |
4638 | ||
b256dc52 JS |
4639 | XC_ENTRY_FOR_EACH (entry, entries, xcache) { |
4640 | switch (entry->type) { | |
4641 | case XC_RULE: | |
4642 | rule_dpif_credit_stats(entry->u.rule, stats); | |
4643 | break; | |
4644 | case XC_BOND: | |
4645 | bond_account(entry->u.bond.bond, entry->u.bond.flow, | |
4646 | entry->u.bond.vid, stats->n_bytes); | |
4647 | break; | |
4648 | case XC_NETDEV: | |
4649 | xlate_cache_netdev(entry, stats); | |
4650 | break; | |
4651 | case XC_NETFLOW: | |
4652 | netflow_flow_update(entry->u.nf.netflow, entry->u.nf.flow, | |
4653 | entry->u.nf.iface, stats); | |
4654 | break; | |
4655 | case XC_MIRROR: | |
4656 | mirror_update_stats(entry->u.mirror.mbridge, | |
4657 | entry->u.mirror.mirrors, | |
4658 | stats->n_packets, stats->n_bytes); | |
4659 | break; | |
4660 | case XC_LEARN: | |
0725e747 | 4661 | ofproto_dpif_flow_mod(entry->u.learn.ofproto, entry->u.learn.fm); |
b256dc52 JS |
4662 | break; |
4663 | case XC_NORMAL: | |
0725e747 BP |
4664 | xlate_cache_normal(entry->u.normal.ofproto, entry->u.normal.flow, |
4665 | entry->u.normal.vlan); | |
b256dc52 JS |
4666 | break; |
4667 | case XC_FIN_TIMEOUT: | |
4668 | xlate_fin_timeout__(entry->u.fin.rule, stats->tcp_flags, | |
4669 | entry->u.fin.idle, entry->u.fin.hard); | |
4670 | break; | |
1e684d7d RW |
4671 | case XC_GROUP: |
4672 | group_dpif_credit_stats(entry->u.group.group, entry->u.group.bucket, | |
4673 | stats); | |
4674 | break; | |
a36de779 PS |
4675 | case XC_TNL_ARP: |
4676 | /* Lookup arp to avoid arp timeout. */ | |
4677 | tnl_arp_lookup(entry->u.tnl_arp_cache.br_name, entry->u.tnl_arp_cache.d_ip, dmac); | |
4678 | break; | |
b256dc52 JS |
4679 | default: |
4680 | OVS_NOT_REACHED(); | |
4681 | } | |
4682 | } | |
4683 | } | |
4684 | ||
4685 | static void | |
4686 | xlate_dev_unref(struct xc_entry *entry) | |
4687 | { | |
4688 | if (entry->u.dev.tx) { | |
4689 | netdev_close(entry->u.dev.tx); | |
4690 | } | |
4691 | if (entry->u.dev.rx) { | |
4692 | netdev_close(entry->u.dev.rx); | |
4693 | } | |
4694 | if (entry->u.dev.bfd) { | |
4695 | bfd_unref(entry->u.dev.bfd); | |
4696 | } | |
4697 | } | |
4698 | ||
4699 | static void | |
4700 | xlate_cache_clear_netflow(struct netflow *netflow, struct flow *flow) | |
4701 | { | |
b256dc52 JS |
4702 | netflow_flow_clear(netflow, flow); |
4703 | netflow_unref(netflow); | |
4704 | free(flow); | |
4705 | } | |
4706 | ||
4707 | void | |
4708 | xlate_cache_clear(struct xlate_cache *xcache) | |
4709 | { | |
4710 | struct xc_entry *entry; | |
4711 | struct ofpbuf entries; | |
4712 | ||
4713 | if (!xcache) { | |
4714 | return; | |
4715 | } | |
4716 | ||
4717 | XC_ENTRY_FOR_EACH (entry, entries, xcache) { | |
4718 | switch (entry->type) { | |
4719 | case XC_RULE: | |
4720 | rule_dpif_unref(entry->u.rule); | |
4721 | break; | |
4722 | case XC_BOND: | |
4723 | free(entry->u.bond.flow); | |
4724 | bond_unref(entry->u.bond.bond); | |
4725 | break; | |
4726 | case XC_NETDEV: | |
4727 | xlate_dev_unref(entry); | |
4728 | break; | |
4729 | case XC_NETFLOW: | |
4730 | xlate_cache_clear_netflow(entry->u.nf.netflow, entry->u.nf.flow); | |
4731 | break; | |
4732 | case XC_MIRROR: | |
4733 | mbridge_unref(entry->u.mirror.mbridge); | |
4734 | break; | |
4735 | case XC_LEARN: | |
4165b5e0 JS |
4736 | free(entry->u.learn.fm); |
4737 | ofpbuf_delete(entry->u.learn.ofpacts); | |
b256dc52 JS |
4738 | break; |
4739 | case XC_NORMAL: | |
4740 | free(entry->u.normal.flow); | |
4741 | break; | |
4742 | case XC_FIN_TIMEOUT: | |
83709dfa JR |
4743 | /* 'u.fin.rule' is always already held as a XC_RULE, which |
4744 | * has already released it's reference above. */ | |
b256dc52 | 4745 | break; |
1e684d7d RW |
4746 | case XC_GROUP: |
4747 | group_dpif_unref(entry->u.group.group); | |
4748 | break; | |
a36de779 PS |
4749 | case XC_TNL_ARP: |
4750 | break; | |
b256dc52 JS |
4751 | default: |
4752 | OVS_NOT_REACHED(); | |
4753 | } | |
4754 | } | |
4755 | ||
4756 | ofpbuf_clear(&xcache->entries); | |
4757 | } | |
4758 | ||
4759 | void | |
4760 | xlate_cache_delete(struct xlate_cache *xcache) | |
4761 | { | |
4762 | xlate_cache_clear(xcache); | |
4763 | ofpbuf_uninit(&xcache->entries); | |
4764 | free(xcache); | |
4765 | } |