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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 EJ |
19 | #include <errno.h> |
20 | ||
db7d4e46 | 21 | #include "bfd.h" |
9583bc14 EJ |
22 | #include "bitmap.h" |
23 | #include "bond.h" | |
24 | #include "bundle.h" | |
25 | #include "byte-order.h" | |
db7d4e46 | 26 | #include "cfm.h" |
9583bc14 EJ |
27 | #include "connmgr.h" |
28 | #include "coverage.h" | |
29 | #include "dpif.h" | |
30 | #include "dynamic-string.h" | |
f7f1ea29 | 31 | #include "in-band.h" |
db7d4e46 | 32 | #include "lacp.h" |
9583bc14 | 33 | #include "learn.h" |
46c88433 | 34 | #include "list.h" |
9583bc14 EJ |
35 | #include "mac-learning.h" |
36 | #include "meta-flow.h" | |
37 | #include "multipath.h" | |
38 | #include "netdev-vport.h" | |
39 | #include "netlink.h" | |
40 | #include "nx-match.h" | |
41 | #include "odp-execute.h" | |
42 | #include "ofp-actions.h" | |
43 | #include "ofproto/ofproto-dpif-ipfix.h" | |
ec7ceaed | 44 | #include "ofproto/ofproto-dpif-mirror.h" |
60d02c72 | 45 | #include "ofproto/ofproto-dpif-monitor.h" |
9583bc14 EJ |
46 | #include "ofproto/ofproto-dpif-sflow.h" |
47 | #include "ofproto/ofproto-dpif.h" | |
6f00e29b | 48 | #include "ofproto/ofproto-provider.h" |
9583bc14 EJ |
49 | #include "tunnel.h" |
50 | #include "vlog.h" | |
51 | ||
46c88433 | 52 | COVERAGE_DEFINE(xlate_actions); |
0f032e95 | 53 | COVERAGE_DEFINE(xlate_actions_oversize); |
8bfd0fda | 54 | COVERAGE_DEFINE(xlate_actions_mpls_overflow); |
9583bc14 EJ |
55 | |
56 | VLOG_DEFINE_THIS_MODULE(ofproto_dpif_xlate); | |
57 | ||
8a553e9a EJ |
58 | /* Maximum depth of flow table recursion (due to resubmit actions) in a |
59 | * flow translation. */ | |
60 | #define MAX_RESUBMIT_RECURSION 64 | |
61 | ||
98b07853 BP |
62 | /* Maximum number of resubmit actions in a flow translation, whether they are |
63 | * recursive or not. */ | |
64 | #define MAX_RESUBMITS (MAX_RESUBMIT_RECURSION * MAX_RESUBMIT_RECURSION) | |
65 | ||
dc24a00f EJ |
66 | struct ovs_rwlock xlate_rwlock = OVS_RWLOCK_INITIALIZER; |
67 | ||
46c88433 EJ |
68 | struct xbridge { |
69 | struct hmap_node hmap_node; /* Node in global 'xbridges' map. */ | |
70 | struct ofproto_dpif *ofproto; /* Key in global 'xbridges' map. */ | |
71 | ||
72 | struct list xbundles; /* Owned xbundles. */ | |
73 | struct hmap xports; /* Indexed by ofp_port. */ | |
74 | ||
75 | char *name; /* Name used in log messages. */ | |
89a8a7f0 | 76 | struct dpif *dpif; /* Datapath interface. */ |
46c88433 EJ |
77 | struct mac_learning *ml; /* Mac learning handle. */ |
78 | struct mbridge *mbridge; /* Mirroring. */ | |
79 | struct dpif_sflow *sflow; /* SFlow handle, or null. */ | |
80 | struct dpif_ipfix *ipfix; /* Ipfix handle, or null. */ | |
ce3955be | 81 | struct netflow *netflow; /* Netflow handle, or null. */ |
9d189a50 | 82 | struct stp *stp; /* STP or null if disabled. */ |
46c88433 | 83 | |
ec89fc6f EJ |
84 | /* Special rules installed by ofproto-dpif. */ |
85 | struct rule_dpif *miss_rule; | |
86 | struct rule_dpif *no_packet_in_rule; | |
87 | ||
46c88433 | 88 | enum ofp_config_flags frag; /* Fragmentation handling. */ |
46c88433 EJ |
89 | bool has_in_band; /* Bridge has in band control? */ |
90 | bool forward_bpdu; /* Bridge forwards STP BPDUs? */ | |
4b97b70d BP |
91 | |
92 | /* True if the datapath supports variable-length | |
93 | * OVS_USERSPACE_ATTR_USERDATA in OVS_ACTION_ATTR_USERSPACE actions. | |
94 | * False if the datapath supports only 8-byte (or shorter) userdata. */ | |
95 | bool variable_length_userdata; | |
8bfd0fda BP |
96 | |
97 | /* Number of MPLS label stack entries that the datapath supports | |
98 | * in matches. */ | |
99 | size_t max_mpls_depth; | |
46c88433 EJ |
100 | }; |
101 | ||
102 | struct xbundle { | |
103 | struct hmap_node hmap_node; /* In global 'xbundles' map. */ | |
104 | struct ofbundle *ofbundle; /* Key in global 'xbundles' map. */ | |
105 | ||
106 | struct list list_node; /* In parent 'xbridges' list. */ | |
107 | struct xbridge *xbridge; /* Parent xbridge. */ | |
108 | ||
109 | struct list xports; /* Contains "struct xport"s. */ | |
110 | ||
111 | char *name; /* Name used in log messages. */ | |
112 | struct bond *bond; /* Nonnull iff more than one port. */ | |
113 | struct lacp *lacp; /* LACP handle or null. */ | |
114 | ||
115 | enum port_vlan_mode vlan_mode; /* VLAN mode. */ | |
116 | int vlan; /* -1=trunk port, else a 12-bit VLAN ID. */ | |
117 | unsigned long *trunks; /* Bitmap of trunked VLANs, if 'vlan' == -1. | |
118 | * NULL if all VLANs are trunked. */ | |
119 | bool use_priority_tags; /* Use 802.1p tag for frames in VLAN 0? */ | |
120 | bool floodable; /* No port has OFPUTIL_PC_NO_FLOOD set? */ | |
121 | }; | |
122 | ||
123 | struct xport { | |
124 | struct hmap_node hmap_node; /* Node in global 'xports' map. */ | |
125 | struct ofport_dpif *ofport; /* Key in global 'xports map. */ | |
126 | ||
127 | struct hmap_node ofp_node; /* Node in parent xbridge 'xports' map. */ | |
128 | ofp_port_t ofp_port; /* Key in parent xbridge 'xports' map. */ | |
129 | ||
130 | odp_port_t odp_port; /* Datapath port number or ODPP_NONE. */ | |
131 | ||
132 | struct list bundle_node; /* In parent xbundle (if it exists). */ | |
133 | struct xbundle *xbundle; /* Parent xbundle or null. */ | |
134 | ||
135 | struct netdev *netdev; /* 'ofport''s netdev. */ | |
136 | ||
137 | struct xbridge *xbridge; /* Parent bridge. */ | |
138 | struct xport *peer; /* Patch port peer or null. */ | |
139 | ||
140 | enum ofputil_port_config config; /* OpenFlow port configuration. */ | |
dd8cd4b4 | 141 | enum ofputil_port_state state; /* OpenFlow port state. */ |
92cf817b | 142 | int stp_port_no; /* STP port number or -1 if not in use. */ |
46c88433 | 143 | |
55954f6e EJ |
144 | struct hmap skb_priorities; /* Map of 'skb_priority_to_dscp's. */ |
145 | ||
46c88433 EJ |
146 | bool may_enable; /* May be enabled in bonds. */ |
147 | bool is_tunnel; /* Is a tunnel port. */ | |
148 | ||
149 | struct cfm *cfm; /* CFM handle or null. */ | |
150 | struct bfd *bfd; /* BFD handle or null. */ | |
151 | }; | |
152 | ||
4d0acc70 EJ |
153 | struct xlate_ctx { |
154 | struct xlate_in *xin; | |
155 | struct xlate_out *xout; | |
156 | ||
46c88433 | 157 | const struct xbridge *xbridge; |
4d0acc70 EJ |
158 | |
159 | /* Flow at the last commit. */ | |
160 | struct flow base_flow; | |
161 | ||
162 | /* Tunnel IP destination address as received. This is stored separately | |
163 | * as the base_flow.tunnel is cleared on init to reflect the datapath | |
164 | * behavior. Used to make sure not to send tunneled output to ourselves, | |
165 | * which might lead to an infinite loop. This could happen easily | |
166 | * if a tunnel is marked as 'ip_remote=flow', and the flow does not | |
167 | * actually set the tun_dst field. */ | |
168 | ovs_be32 orig_tunnel_ip_dst; | |
169 | ||
170 | /* Stack for the push and pop actions. Each stack element is of type | |
171 | * "union mf_subvalue". */ | |
172 | union mf_subvalue init_stack[1024 / sizeof(union mf_subvalue)]; | |
173 | struct ofpbuf stack; | |
174 | ||
175 | /* The rule that we are currently translating, or NULL. */ | |
176 | struct rule_dpif *rule; | |
177 | ||
98b07853 BP |
178 | /* Resubmit statistics, via xlate_table_action(). */ |
179 | int recurse; /* Current resubmit nesting depth. */ | |
180 | int resubmits; /* Total number of resubmits. */ | |
5a070238 | 181 | bool in_group; /* Currently translating ofgroup, if true. */ |
98b07853 | 182 | |
4d0acc70 EJ |
183 | uint32_t orig_skb_priority; /* Priority when packet arrived. */ |
184 | uint8_t table_id; /* OpenFlow table ID where flow was found. */ | |
185 | uint32_t sflow_n_outputs; /* Number of output ports. */ | |
4e022ec0 | 186 | odp_port_t sflow_odp_port; /* Output port for composing sFlow action. */ |
4d0acc70 EJ |
187 | uint16_t user_cookie_offset;/* Used for user_action_cookie fixup. */ |
188 | bool exit; /* No further actions should be processed. */ | |
7fdb60a7 SH |
189 | |
190 | /* OpenFlow 1.1+ action set. | |
191 | * | |
192 | * 'action_set' accumulates "struct ofpact"s added by OFPACT_WRITE_ACTIONS. | |
193 | * When translation is otherwise complete, ofpacts_execute_action_set() | |
194 | * converts it to a set of "struct ofpact"s that can be translated into | |
195 | * datapath actions. */ | |
196 | struct ofpbuf action_set; /* Action set. */ | |
197 | uint64_t action_set_stub[1024 / 8]; | |
4d0acc70 EJ |
198 | }; |
199 | ||
9583bc14 EJ |
200 | /* A controller may use OFPP_NONE as the ingress port to indicate that |
201 | * it did not arrive on a "real" port. 'ofpp_none_bundle' exists for | |
202 | * when an input bundle is needed for validation (e.g., mirroring or | |
203 | * OFPP_NORMAL processing). It is not connected to an 'ofproto' or have | |
3815d6c2 LS |
204 | * any 'port' structs, so care must be taken when dealing with it. |
205 | * The bundle's name and vlan mode are initialized in lookup_input_bundle() */ | |
206 | static struct xbundle ofpp_none_bundle; | |
9583bc14 | 207 | |
55954f6e EJ |
208 | /* Node in 'xport''s 'skb_priorities' map. Used to maintain a map from |
209 | * 'priority' (the datapath's term for QoS queue) to the dscp bits which all | |
210 | * traffic egressing the 'ofport' with that priority should be marked with. */ | |
211 | struct skb_priority_to_dscp { | |
212 | struct hmap_node hmap_node; /* Node in 'ofport_dpif''s 'skb_priorities'. */ | |
213 | uint32_t skb_priority; /* Priority of this queue (see struct flow). */ | |
214 | ||
215 | uint8_t dscp; /* DSCP bits to mark outgoing traffic with. */ | |
216 | }; | |
217 | ||
46c88433 EJ |
218 | static struct hmap xbridges = HMAP_INITIALIZER(&xbridges); |
219 | static struct hmap xbundles = HMAP_INITIALIZER(&xbundles); | |
220 | static struct hmap xports = HMAP_INITIALIZER(&xports); | |
221 | ||
222 | static bool may_receive(const struct xport *, struct xlate_ctx *); | |
9583bc14 EJ |
223 | static void do_xlate_actions(const struct ofpact *, size_t ofpacts_len, |
224 | struct xlate_ctx *); | |
91d6cd12 AW |
225 | static void xlate_actions__(struct xlate_in *, struct xlate_out *) |
226 | OVS_REQ_RDLOCK(xlate_rwlock); | |
d6fc5f57 EJ |
227 | static void xlate_normal(struct xlate_ctx *); |
228 | static void xlate_report(struct xlate_ctx *, const char *); | |
229 | static void xlate_table_action(struct xlate_ctx *, ofp_port_t in_port, | |
230 | uint8_t table_id, bool may_packet_in); | |
46c88433 EJ |
231 | static bool input_vid_is_valid(uint16_t vid, struct xbundle *, bool warn); |
232 | static uint16_t input_vid_to_vlan(const struct xbundle *, uint16_t vid); | |
233 | static void output_normal(struct xlate_ctx *, const struct xbundle *, | |
9583bc14 | 234 | uint16_t vlan); |
4e022ec0 | 235 | static void compose_output_action(struct xlate_ctx *, ofp_port_t ofp_port); |
9583bc14 | 236 | |
46c88433 EJ |
237 | static struct xbridge *xbridge_lookup(const struct ofproto_dpif *); |
238 | static struct xbundle *xbundle_lookup(const struct ofbundle *); | |
5e6af486 | 239 | static struct xport *xport_lookup(const struct ofport_dpif *); |
46c88433 | 240 | static struct xport *get_ofp_port(const struct xbridge *, ofp_port_t ofp_port); |
55954f6e EJ |
241 | static struct skb_priority_to_dscp *get_skb_priority(const struct xport *, |
242 | uint32_t skb_priority); | |
243 | static void clear_skb_priorities(struct xport *); | |
244 | static bool dscp_from_skb_priority(const struct xport *, uint32_t skb_priority, | |
245 | uint8_t *dscp); | |
46c88433 EJ |
246 | |
247 | void | |
248 | xlate_ofproto_set(struct ofproto_dpif *ofproto, const char *name, | |
ec89fc6f EJ |
249 | struct dpif *dpif, struct rule_dpif *miss_rule, |
250 | struct rule_dpif *no_packet_in_rule, | |
251 | const struct mac_learning *ml, struct stp *stp, | |
252 | const struct mbridge *mbridge, | |
46c88433 | 253 | const struct dpif_sflow *sflow, |
ce3955be EJ |
254 | const struct dpif_ipfix *ipfix, |
255 | const struct netflow *netflow, enum ofp_config_flags frag, | |
4b97b70d | 256 | bool forward_bpdu, bool has_in_band, |
8bfd0fda BP |
257 | bool variable_length_userdata, |
258 | size_t max_mpls_depth) | |
46c88433 EJ |
259 | { |
260 | struct xbridge *xbridge = xbridge_lookup(ofproto); | |
261 | ||
262 | if (!xbridge) { | |
263 | xbridge = xzalloc(sizeof *xbridge); | |
264 | xbridge->ofproto = ofproto; | |
265 | ||
266 | hmap_insert(&xbridges, &xbridge->hmap_node, hash_pointer(ofproto, 0)); | |
267 | hmap_init(&xbridge->xports); | |
268 | list_init(&xbridge->xbundles); | |
269 | } | |
270 | ||
271 | if (xbridge->ml != ml) { | |
272 | mac_learning_unref(xbridge->ml); | |
273 | xbridge->ml = mac_learning_ref(ml); | |
274 | } | |
275 | ||
276 | if (xbridge->mbridge != mbridge) { | |
277 | mbridge_unref(xbridge->mbridge); | |
278 | xbridge->mbridge = mbridge_ref(mbridge); | |
279 | } | |
280 | ||
281 | if (xbridge->sflow != sflow) { | |
282 | dpif_sflow_unref(xbridge->sflow); | |
283 | xbridge->sflow = dpif_sflow_ref(sflow); | |
284 | } | |
285 | ||
286 | if (xbridge->ipfix != ipfix) { | |
287 | dpif_ipfix_unref(xbridge->ipfix); | |
288 | xbridge->ipfix = dpif_ipfix_ref(ipfix); | |
289 | } | |
290 | ||
9d189a50 EJ |
291 | if (xbridge->stp != stp) { |
292 | stp_unref(xbridge->stp); | |
293 | xbridge->stp = stp_ref(stp); | |
294 | } | |
295 | ||
ce3955be EJ |
296 | if (xbridge->netflow != netflow) { |
297 | netflow_unref(xbridge->netflow); | |
298 | xbridge->netflow = netflow_ref(netflow); | |
299 | } | |
300 | ||
46c88433 EJ |
301 | free(xbridge->name); |
302 | xbridge->name = xstrdup(name); | |
303 | ||
89a8a7f0 | 304 | xbridge->dpif = dpif; |
46c88433 EJ |
305 | xbridge->forward_bpdu = forward_bpdu; |
306 | xbridge->has_in_band = has_in_band; | |
46c88433 | 307 | xbridge->frag = frag; |
ec89fc6f EJ |
308 | xbridge->miss_rule = miss_rule; |
309 | xbridge->no_packet_in_rule = no_packet_in_rule; | |
4b97b70d | 310 | xbridge->variable_length_userdata = variable_length_userdata; |
8bfd0fda | 311 | xbridge->max_mpls_depth = max_mpls_depth; |
46c88433 EJ |
312 | } |
313 | ||
314 | void | |
315 | xlate_remove_ofproto(struct ofproto_dpif *ofproto) | |
316 | { | |
317 | struct xbridge *xbridge = xbridge_lookup(ofproto); | |
318 | struct xbundle *xbundle, *next_xbundle; | |
319 | struct xport *xport, *next_xport; | |
320 | ||
321 | if (!xbridge) { | |
322 | return; | |
323 | } | |
324 | ||
325 | HMAP_FOR_EACH_SAFE (xport, next_xport, ofp_node, &xbridge->xports) { | |
326 | xlate_ofport_remove(xport->ofport); | |
327 | } | |
328 | ||
329 | LIST_FOR_EACH_SAFE (xbundle, next_xbundle, list_node, &xbridge->xbundles) { | |
330 | xlate_bundle_remove(xbundle->ofbundle); | |
331 | } | |
332 | ||
333 | hmap_remove(&xbridges, &xbridge->hmap_node); | |
795cc5c1 EJ |
334 | mac_learning_unref(xbridge->ml); |
335 | mbridge_unref(xbridge->mbridge); | |
336 | dpif_sflow_unref(xbridge->sflow); | |
337 | dpif_ipfix_unref(xbridge->ipfix); | |
338 | stp_unref(xbridge->stp); | |
339 | hmap_destroy(&xbridge->xports); | |
46c88433 EJ |
340 | free(xbridge->name); |
341 | free(xbridge); | |
342 | } | |
343 | ||
344 | void | |
345 | xlate_bundle_set(struct ofproto_dpif *ofproto, struct ofbundle *ofbundle, | |
346 | const char *name, enum port_vlan_mode vlan_mode, int vlan, | |
347 | unsigned long *trunks, bool use_priority_tags, | |
348 | const struct bond *bond, const struct lacp *lacp, | |
349 | bool floodable) | |
350 | { | |
351 | struct xbundle *xbundle = xbundle_lookup(ofbundle); | |
352 | ||
353 | if (!xbundle) { | |
354 | xbundle = xzalloc(sizeof *xbundle); | |
355 | xbundle->ofbundle = ofbundle; | |
356 | xbundle->xbridge = xbridge_lookup(ofproto); | |
357 | ||
358 | hmap_insert(&xbundles, &xbundle->hmap_node, hash_pointer(ofbundle, 0)); | |
359 | list_insert(&xbundle->xbridge->xbundles, &xbundle->list_node); | |
360 | list_init(&xbundle->xports); | |
361 | } | |
362 | ||
363 | ovs_assert(xbundle->xbridge); | |
364 | ||
365 | free(xbundle->name); | |
366 | xbundle->name = xstrdup(name); | |
367 | ||
368 | xbundle->vlan_mode = vlan_mode; | |
369 | xbundle->vlan = vlan; | |
370 | xbundle->trunks = trunks; | |
371 | xbundle->use_priority_tags = use_priority_tags; | |
372 | xbundle->floodable = floodable; | |
373 | ||
374 | if (xbundle->bond != bond) { | |
375 | bond_unref(xbundle->bond); | |
376 | xbundle->bond = bond_ref(bond); | |
377 | } | |
378 | ||
379 | if (xbundle->lacp != lacp) { | |
380 | lacp_unref(xbundle->lacp); | |
381 | xbundle->lacp = lacp_ref(lacp); | |
382 | } | |
383 | } | |
384 | ||
385 | void | |
386 | xlate_bundle_remove(struct ofbundle *ofbundle) | |
387 | { | |
388 | struct xbundle *xbundle = xbundle_lookup(ofbundle); | |
389 | struct xport *xport, *next; | |
390 | ||
391 | if (!xbundle) { | |
392 | return; | |
393 | } | |
394 | ||
395 | LIST_FOR_EACH_SAFE (xport, next, bundle_node, &xbundle->xports) { | |
396 | list_remove(&xport->bundle_node); | |
397 | xport->xbundle = NULL; | |
398 | } | |
399 | ||
400 | hmap_remove(&xbundles, &xbundle->hmap_node); | |
401 | list_remove(&xbundle->list_node); | |
402 | bond_unref(xbundle->bond); | |
403 | lacp_unref(xbundle->lacp); | |
404 | free(xbundle->name); | |
405 | free(xbundle); | |
406 | } | |
407 | ||
408 | void | |
409 | xlate_ofport_set(struct ofproto_dpif *ofproto, struct ofbundle *ofbundle, | |
410 | struct ofport_dpif *ofport, ofp_port_t ofp_port, | |
411 | odp_port_t odp_port, const struct netdev *netdev, | |
412 | const struct cfm *cfm, const struct bfd *bfd, | |
9d189a50 | 413 | struct ofport_dpif *peer, int stp_port_no, |
55954f6e | 414 | const struct ofproto_port_queue *qdscp_list, size_t n_qdscp, |
dd8cd4b4 SH |
415 | enum ofputil_port_config config, |
416 | enum ofputil_port_state state, bool is_tunnel, | |
9d189a50 | 417 | bool may_enable) |
46c88433 EJ |
418 | { |
419 | struct xport *xport = xport_lookup(ofport); | |
55954f6e | 420 | size_t i; |
46c88433 EJ |
421 | |
422 | if (!xport) { | |
423 | xport = xzalloc(sizeof *xport); | |
424 | xport->ofport = ofport; | |
425 | xport->xbridge = xbridge_lookup(ofproto); | |
426 | xport->ofp_port = ofp_port; | |
427 | ||
55954f6e | 428 | hmap_init(&xport->skb_priorities); |
46c88433 EJ |
429 | hmap_insert(&xports, &xport->hmap_node, hash_pointer(ofport, 0)); |
430 | hmap_insert(&xport->xbridge->xports, &xport->ofp_node, | |
431 | hash_ofp_port(xport->ofp_port)); | |
432 | } | |
433 | ||
434 | ovs_assert(xport->ofp_port == ofp_port); | |
435 | ||
436 | xport->config = config; | |
dd8cd4b4 | 437 | xport->state = state; |
9d189a50 | 438 | xport->stp_port_no = stp_port_no; |
46c88433 EJ |
439 | xport->is_tunnel = is_tunnel; |
440 | xport->may_enable = may_enable; | |
441 | xport->odp_port = odp_port; | |
442 | ||
443 | if (xport->netdev != netdev) { | |
444 | netdev_close(xport->netdev); | |
445 | xport->netdev = netdev_ref(netdev); | |
446 | } | |
447 | ||
448 | if (xport->cfm != cfm) { | |
449 | cfm_unref(xport->cfm); | |
450 | xport->cfm = cfm_ref(cfm); | |
451 | } | |
452 | ||
453 | if (xport->bfd != bfd) { | |
454 | bfd_unref(xport->bfd); | |
455 | xport->bfd = bfd_ref(bfd); | |
456 | } | |
457 | ||
458 | if (xport->peer) { | |
459 | xport->peer->peer = NULL; | |
460 | } | |
5e6af486 | 461 | xport->peer = xport_lookup(peer); |
46c88433 EJ |
462 | if (xport->peer) { |
463 | xport->peer->peer = xport; | |
464 | } | |
465 | ||
466 | if (xport->xbundle) { | |
467 | list_remove(&xport->bundle_node); | |
468 | } | |
5e6af486 | 469 | xport->xbundle = xbundle_lookup(ofbundle); |
46c88433 EJ |
470 | if (xport->xbundle) { |
471 | list_insert(&xport->xbundle->xports, &xport->bundle_node); | |
472 | } | |
55954f6e EJ |
473 | |
474 | clear_skb_priorities(xport); | |
475 | for (i = 0; i < n_qdscp; i++) { | |
476 | struct skb_priority_to_dscp *pdscp; | |
477 | uint32_t skb_priority; | |
478 | ||
89a8a7f0 EJ |
479 | if (dpif_queue_to_priority(xport->xbridge->dpif, qdscp_list[i].queue, |
480 | &skb_priority)) { | |
55954f6e EJ |
481 | continue; |
482 | } | |
483 | ||
484 | pdscp = xmalloc(sizeof *pdscp); | |
485 | pdscp->skb_priority = skb_priority; | |
486 | pdscp->dscp = (qdscp_list[i].dscp << 2) & IP_DSCP_MASK; | |
487 | hmap_insert(&xport->skb_priorities, &pdscp->hmap_node, | |
488 | hash_int(pdscp->skb_priority, 0)); | |
489 | } | |
46c88433 EJ |
490 | } |
491 | ||
492 | void | |
493 | xlate_ofport_remove(struct ofport_dpif *ofport) | |
494 | { | |
495 | struct xport *xport = xport_lookup(ofport); | |
496 | ||
497 | if (!xport) { | |
498 | return; | |
499 | } | |
500 | ||
501 | if (xport->peer) { | |
502 | xport->peer->peer = NULL; | |
503 | xport->peer = NULL; | |
504 | } | |
505 | ||
e621a12d EJ |
506 | if (xport->xbundle) { |
507 | list_remove(&xport->bundle_node); | |
508 | } | |
509 | ||
55954f6e EJ |
510 | clear_skb_priorities(xport); |
511 | hmap_destroy(&xport->skb_priorities); | |
512 | ||
46c88433 EJ |
513 | hmap_remove(&xports, &xport->hmap_node); |
514 | hmap_remove(&xport->xbridge->xports, &xport->ofp_node); | |
515 | ||
516 | netdev_close(xport->netdev); | |
517 | cfm_unref(xport->cfm); | |
518 | bfd_unref(xport->bfd); | |
519 | free(xport); | |
520 | } | |
521 | ||
8449c4d6 EJ |
522 | /* Given a datpath, packet, and flow metadata ('backer', 'packet', and 'key' |
523 | * respectively), populates 'flow' with the result of odp_flow_key_to_flow(). | |
836fbda7 SH |
524 | * Optionally populates 'ofproto' with the ofproto_dpif, 'odp_in_port' with |
525 | * the datapath in_port, that 'packet' ingressed, and 'ipfix', 'sflow', and | |
526 | * 'netflow' with the appropriate handles for those protocols if they're | |
527 | * enabled. Caller is responsible for unrefing them. | |
8449c4d6 EJ |
528 | * |
529 | * If 'ofproto' is nonnull, requires 'flow''s in_port to exist. Otherwise sets | |
530 | * 'flow''s in_port to OFPP_NONE. | |
531 | * | |
532 | * This function does post-processing on data returned from | |
533 | * odp_flow_key_to_flow() to help make VLAN splinters transparent to the rest | |
534 | * of the upcall processing logic. In particular, if the extracted in_port is | |
535 | * a VLAN splinter port, it replaces flow->in_port by the "real" port, sets | |
536 | * flow->vlan_tci correctly for the VLAN of the VLAN splinter port, and pushes | |
537 | * a VLAN header onto 'packet' (if it is nonnull). | |
538 | * | |
539 | * Similarly, this function also includes some logic to help with tunnels. It | |
540 | * may modify 'flow' as necessary to make the tunneling implementation | |
541 | * transparent to the upcall processing logic. | |
542 | * | |
543 | * Returns 0 if successful, ENODEV if the parsed flow has no associated ofport, | |
544 | * or some other positive errno if there are other problems. */ | |
545 | int | |
546 | xlate_receive(const struct dpif_backer *backer, struct ofpbuf *packet, | |
836fbda7 | 547 | const struct nlattr *key, size_t key_len, struct flow *flow, |
1dfdb9b3 EJ |
548 | struct ofproto_dpif **ofproto, struct dpif_ipfix **ipfix, |
549 | struct dpif_sflow **sflow, struct netflow **netflow, | |
550 | odp_port_t *odp_in_port) | |
8449c4d6 | 551 | { |
8449c4d6 EJ |
552 | const struct xport *xport; |
553 | int error = ENODEV; | |
554 | ||
dc24a00f | 555 | ovs_rwlock_rdlock(&xlate_rwlock); |
836fbda7 | 556 | if (odp_flow_key_to_flow(key, key_len, flow) == ODP_FIT_ERROR) { |
8449c4d6 EJ |
557 | error = EINVAL; |
558 | goto exit; | |
559 | } | |
560 | ||
561 | if (odp_in_port) { | |
562 | *odp_in_port = flow->in_port.odp_port; | |
563 | } | |
564 | ||
565 | xport = xport_lookup(tnl_port_should_receive(flow) | |
d6fc5f57 EJ |
566 | ? tnl_port_receive(flow) |
567 | : odp_port_to_ofport(backer, flow->in_port.odp_port)); | |
8449c4d6 EJ |
568 | |
569 | flow->in_port.ofp_port = xport ? xport->ofp_port : OFPP_NONE; | |
570 | if (!xport) { | |
571 | goto exit; | |
572 | } | |
573 | ||
574 | if (vsp_adjust_flow(xport->xbridge->ofproto, flow)) { | |
575 | if (packet) { | |
576 | /* Make the packet resemble the flow, so that it gets sent to | |
577 | * an OpenFlow controller properly, so that it looks correct | |
578 | * for sFlow, and so that flow_extract() will get the correct | |
da546e07 | 579 | * vlan_tci if it is called on 'packet'. */ |
1bf02876 | 580 | eth_push_vlan(packet, htons(ETH_TYPE_VLAN), flow->vlan_tci); |
8449c4d6 | 581 | } |
8449c4d6 EJ |
582 | } |
583 | error = 0; | |
584 | ||
585 | if (ofproto) { | |
586 | *ofproto = xport->xbridge->ofproto; | |
587 | } | |
588 | ||
1dfdb9b3 EJ |
589 | if (ipfix) { |
590 | *ipfix = dpif_ipfix_ref(xport->xbridge->ipfix); | |
591 | } | |
592 | ||
593 | if (sflow) { | |
594 | *sflow = dpif_sflow_ref(xport->xbridge->sflow); | |
595 | } | |
596 | ||
597 | if (netflow) { | |
598 | *netflow = netflow_ref(xport->xbridge->netflow); | |
599 | } | |
600 | ||
8449c4d6 | 601 | exit: |
dc24a00f | 602 | ovs_rwlock_unlock(&xlate_rwlock); |
8449c4d6 EJ |
603 | return error; |
604 | } | |
605 | ||
46c88433 EJ |
606 | static struct xbridge * |
607 | xbridge_lookup(const struct ofproto_dpif *ofproto) | |
608 | { | |
609 | struct xbridge *xbridge; | |
610 | ||
5e6af486 EJ |
611 | if (!ofproto) { |
612 | return NULL; | |
613 | } | |
614 | ||
46c88433 EJ |
615 | HMAP_FOR_EACH_IN_BUCKET (xbridge, hmap_node, hash_pointer(ofproto, 0), |
616 | &xbridges) { | |
617 | if (xbridge->ofproto == ofproto) { | |
618 | return xbridge; | |
619 | } | |
620 | } | |
621 | return NULL; | |
622 | } | |
623 | ||
624 | static struct xbundle * | |
625 | xbundle_lookup(const struct ofbundle *ofbundle) | |
626 | { | |
627 | struct xbundle *xbundle; | |
628 | ||
5e6af486 EJ |
629 | if (!ofbundle) { |
630 | return NULL; | |
631 | } | |
632 | ||
46c88433 EJ |
633 | HMAP_FOR_EACH_IN_BUCKET (xbundle, hmap_node, hash_pointer(ofbundle, 0), |
634 | &xbundles) { | |
635 | if (xbundle->ofbundle == ofbundle) { | |
636 | return xbundle; | |
637 | } | |
638 | } | |
639 | return NULL; | |
640 | } | |
641 | ||
642 | static struct xport * | |
5e6af486 | 643 | xport_lookup(const struct ofport_dpif *ofport) |
46c88433 EJ |
644 | { |
645 | struct xport *xport; | |
646 | ||
5e6af486 EJ |
647 | if (!ofport) { |
648 | return NULL; | |
649 | } | |
650 | ||
46c88433 EJ |
651 | HMAP_FOR_EACH_IN_BUCKET (xport, hmap_node, hash_pointer(ofport, 0), |
652 | &xports) { | |
653 | if (xport->ofport == ofport) { | |
654 | return xport; | |
655 | } | |
656 | } | |
657 | return NULL; | |
658 | } | |
659 | ||
40085e56 EJ |
660 | static struct stp_port * |
661 | xport_get_stp_port(const struct xport *xport) | |
662 | { | |
92cf817b | 663 | return xport->xbridge->stp && xport->stp_port_no != -1 |
40085e56 EJ |
664 | ? stp_get_port(xport->xbridge->stp, xport->stp_port_no) |
665 | : NULL; | |
666 | } | |
9d189a50 EJ |
667 | |
668 | static enum stp_state | |
669 | xport_stp_learn_state(const struct xport *xport) | |
670 | { | |
40085e56 EJ |
671 | struct stp_port *sp = xport_get_stp_port(xport); |
672 | return stp_learn_in_state(sp ? stp_port_get_state(sp) : STP_DISABLED); | |
9d189a50 EJ |
673 | } |
674 | ||
675 | static bool | |
676 | xport_stp_forward_state(const struct xport *xport) | |
677 | { | |
40085e56 EJ |
678 | struct stp_port *sp = xport_get_stp_port(xport); |
679 | return stp_forward_in_state(sp ? stp_port_get_state(sp) : STP_DISABLED); | |
9d189a50 EJ |
680 | } |
681 | ||
682 | /* Returns true if STP should process 'flow'. Sets fields in 'wc' that | |
683 | * were used to make the determination.*/ | |
684 | static bool | |
685 | stp_should_process_flow(const struct flow *flow, struct flow_wildcards *wc) | |
686 | { | |
687 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); | |
688 | return eth_addr_equals(flow->dl_dst, eth_addr_stp); | |
689 | } | |
690 | ||
691 | static void | |
692 | stp_process_packet(const struct xport *xport, const struct ofpbuf *packet) | |
693 | { | |
40085e56 | 694 | struct stp_port *sp = xport_get_stp_port(xport); |
9d189a50 EJ |
695 | struct ofpbuf payload = *packet; |
696 | struct eth_header *eth = payload.data; | |
9d189a50 EJ |
697 | |
698 | /* Sink packets on ports that have STP disabled when the bridge has | |
699 | * STP enabled. */ | |
700 | if (!sp || stp_port_get_state(sp) == STP_DISABLED) { | |
701 | return; | |
702 | } | |
703 | ||
704 | /* Trim off padding on payload. */ | |
705 | if (payload.size > ntohs(eth->eth_type) + ETH_HEADER_LEN) { | |
706 | payload.size = ntohs(eth->eth_type) + ETH_HEADER_LEN; | |
707 | } | |
708 | ||
709 | if (ofpbuf_try_pull(&payload, ETH_HEADER_LEN + LLC_HEADER_LEN)) { | |
710 | stp_received_bpdu(sp, payload.data, payload.size); | |
711 | } | |
712 | } | |
713 | ||
46c88433 EJ |
714 | static struct xport * |
715 | get_ofp_port(const struct xbridge *xbridge, ofp_port_t ofp_port) | |
716 | { | |
717 | struct xport *xport; | |
718 | ||
719 | HMAP_FOR_EACH_IN_BUCKET (xport, ofp_node, hash_ofp_port(ofp_port), | |
720 | &xbridge->xports) { | |
721 | if (xport->ofp_port == ofp_port) { | |
722 | return xport; | |
723 | } | |
724 | } | |
725 | return NULL; | |
726 | } | |
727 | ||
728 | static odp_port_t | |
729 | ofp_port_to_odp_port(const struct xbridge *xbridge, ofp_port_t ofp_port) | |
730 | { | |
731 | const struct xport *xport = get_ofp_port(xbridge, ofp_port); | |
732 | return xport ? xport->odp_port : ODPP_NONE; | |
733 | } | |
734 | ||
dd8cd4b4 SH |
735 | static bool |
736 | odp_port_is_alive(const struct xlate_ctx *ctx, ofp_port_t ofp_port) | |
737 | { | |
738 | struct xport *xport; | |
739 | ||
740 | xport = get_ofp_port(ctx->xbridge, ofp_port); | |
741 | if (!xport || xport->config & OFPUTIL_PC_PORT_DOWN || | |
742 | xport->state & OFPUTIL_PS_LINK_DOWN) { | |
743 | return false; | |
744 | } | |
745 | ||
746 | return true; | |
747 | } | |
748 | ||
749 | static const struct ofputil_bucket * | |
750 | group_first_live_bucket(const struct xlate_ctx *, const struct group_dpif *, | |
751 | int depth); | |
752 | ||
753 | static bool | |
754 | group_is_alive(const struct xlate_ctx *ctx, uint32_t group_id, int depth) | |
755 | { | |
756 | struct group_dpif *group; | |
757 | bool hit; | |
758 | ||
759 | hit = group_dpif_lookup(ctx->xbridge->ofproto, group_id, &group); | |
760 | if (!hit) { | |
761 | return false; | |
762 | } | |
763 | ||
764 | hit = group_first_live_bucket(ctx, group, depth) != NULL; | |
765 | ||
766 | group_dpif_release(group); | |
767 | return hit; | |
768 | } | |
769 | ||
770 | #define MAX_LIVENESS_RECURSION 128 /* Arbitrary limit */ | |
771 | ||
772 | static bool | |
773 | bucket_is_alive(const struct xlate_ctx *ctx, | |
774 | const struct ofputil_bucket *bucket, int depth) | |
775 | { | |
776 | if (depth >= MAX_LIVENESS_RECURSION) { | |
777 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); | |
778 | ||
779 | VLOG_WARN_RL(&rl, "bucket chaining exceeded %d links", | |
780 | MAX_LIVENESS_RECURSION); | |
781 | return false; | |
782 | } | |
783 | ||
fe7e5749 | 784 | return !ofputil_bucket_has_liveness(bucket) || |
d6fc5f57 EJ |
785 | (bucket->watch_port != OFPP_ANY && |
786 | odp_port_is_alive(ctx, bucket->watch_port)) || | |
787 | (bucket->watch_group != OFPG_ANY && | |
788 | group_is_alive(ctx, bucket->watch_group, depth + 1)); | |
dd8cd4b4 SH |
789 | } |
790 | ||
791 | static const struct ofputil_bucket * | |
792 | group_first_live_bucket(const struct xlate_ctx *ctx, | |
793 | const struct group_dpif *group, int depth) | |
794 | { | |
795 | struct ofputil_bucket *bucket; | |
796 | const struct list *buckets; | |
797 | ||
798 | group_dpif_get_buckets(group, &buckets); | |
799 | LIST_FOR_EACH (bucket, list_node, buckets) { | |
800 | if (bucket_is_alive(ctx, bucket, depth)) { | |
801 | return bucket; | |
802 | } | |
803 | } | |
804 | ||
805 | return NULL; | |
806 | } | |
807 | ||
fe7e5749 SH |
808 | static const struct ofputil_bucket * |
809 | group_best_live_bucket(const struct xlate_ctx *ctx, | |
810 | const struct group_dpif *group, | |
811 | uint32_t basis) | |
812 | { | |
813 | const struct ofputil_bucket *best_bucket = NULL; | |
814 | uint32_t best_score = 0; | |
815 | int i = 0; | |
816 | ||
817 | const struct ofputil_bucket *bucket; | |
818 | const struct list *buckets; | |
819 | ||
820 | group_dpif_get_buckets(group, &buckets); | |
821 | LIST_FOR_EACH (bucket, list_node, buckets) { | |
822 | if (bucket_is_alive(ctx, bucket, 0)) { | |
7cb279c2 | 823 | uint32_t score = (hash_int(i, basis) & 0xffff) * bucket->weight; |
fe7e5749 SH |
824 | if (score >= best_score) { |
825 | best_bucket = bucket; | |
826 | best_score = score; | |
827 | } | |
828 | } | |
829 | i++; | |
830 | } | |
831 | ||
832 | return best_bucket; | |
833 | } | |
834 | ||
9583bc14 | 835 | static bool |
46c88433 | 836 | xbundle_trunks_vlan(const struct xbundle *bundle, uint16_t vlan) |
9583bc14 EJ |
837 | { |
838 | return (bundle->vlan_mode != PORT_VLAN_ACCESS | |
839 | && (!bundle->trunks || bitmap_is_set(bundle->trunks, vlan))); | |
840 | } | |
841 | ||
842 | static bool | |
46c88433 EJ |
843 | xbundle_includes_vlan(const struct xbundle *xbundle, uint16_t vlan) |
844 | { | |
845 | return vlan == xbundle->vlan || xbundle_trunks_vlan(xbundle, vlan); | |
846 | } | |
847 | ||
848 | static mirror_mask_t | |
849 | xbundle_mirror_out(const struct xbridge *xbridge, struct xbundle *xbundle) | |
850 | { | |
851 | return xbundle != &ofpp_none_bundle | |
852 | ? mirror_bundle_out(xbridge->mbridge, xbundle->ofbundle) | |
853 | : 0; | |
854 | } | |
855 | ||
856 | static mirror_mask_t | |
857 | xbundle_mirror_src(const struct xbridge *xbridge, struct xbundle *xbundle) | |
9583bc14 | 858 | { |
46c88433 EJ |
859 | return xbundle != &ofpp_none_bundle |
860 | ? mirror_bundle_src(xbridge->mbridge, xbundle->ofbundle) | |
861 | : 0; | |
9583bc14 EJ |
862 | } |
863 | ||
46c88433 EJ |
864 | static mirror_mask_t |
865 | xbundle_mirror_dst(const struct xbridge *xbridge, struct xbundle *xbundle) | |
9583bc14 | 866 | { |
46c88433 EJ |
867 | return xbundle != &ofpp_none_bundle |
868 | ? mirror_bundle_dst(xbridge->mbridge, xbundle->ofbundle) | |
869 | : 0; | |
870 | } | |
871 | ||
872 | static struct xbundle * | |
873 | lookup_input_bundle(const struct xbridge *xbridge, ofp_port_t in_port, | |
874 | bool warn, struct xport **in_xportp) | |
875 | { | |
876 | struct xport *xport; | |
9583bc14 EJ |
877 | |
878 | /* Find the port and bundle for the received packet. */ | |
46c88433 EJ |
879 | xport = get_ofp_port(xbridge, in_port); |
880 | if (in_xportp) { | |
881 | *in_xportp = xport; | |
9583bc14 | 882 | } |
46c88433 EJ |
883 | if (xport && xport->xbundle) { |
884 | return xport->xbundle; | |
9583bc14 EJ |
885 | } |
886 | ||
887 | /* Special-case OFPP_NONE, which a controller may use as the ingress | |
888 | * port for traffic that it is sourcing. */ | |
889 | if (in_port == OFPP_NONE) { | |
3815d6c2 LS |
890 | ofpp_none_bundle.name = "OFPP_NONE"; |
891 | ofpp_none_bundle.vlan_mode = PORT_VLAN_TRUNK; | |
9583bc14 EJ |
892 | return &ofpp_none_bundle; |
893 | } | |
894 | ||
895 | /* Odd. A few possible reasons here: | |
896 | * | |
897 | * - We deleted a port but there are still a few packets queued up | |
898 | * from it. | |
899 | * | |
900 | * - Someone externally added a port (e.g. "ovs-dpctl add-if") that | |
901 | * we don't know about. | |
902 | * | |
903 | * - The ofproto client didn't configure the port as part of a bundle. | |
904 | * This is particularly likely to happen if a packet was received on the | |
905 | * port after it was created, but before the client had a chance to | |
906 | * configure its bundle. | |
907 | */ | |
908 | if (warn) { | |
909 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
910 | ||
911 | VLOG_WARN_RL(&rl, "bridge %s: received packet on unknown " | |
46c88433 | 912 | "port %"PRIu16, xbridge->name, in_port); |
9583bc14 EJ |
913 | } |
914 | return NULL; | |
915 | } | |
916 | ||
917 | static void | |
918 | add_mirror_actions(struct xlate_ctx *ctx, const struct flow *orig_flow) | |
919 | { | |
46c88433 | 920 | const struct xbridge *xbridge = ctx->xbridge; |
9583bc14 | 921 | mirror_mask_t mirrors; |
46c88433 | 922 | struct xbundle *in_xbundle; |
9583bc14 EJ |
923 | uint16_t vlan; |
924 | uint16_t vid; | |
cdf5d3a5 EJ |
925 | |
926 | mirrors = ctx->xout->mirrors; | |
927 | ctx->xout->mirrors = 0; | |
9583bc14 | 928 | |
46c88433 EJ |
929 | in_xbundle = lookup_input_bundle(xbridge, orig_flow->in_port.ofp_port, |
930 | ctx->xin->packet != NULL, NULL); | |
931 | if (!in_xbundle) { | |
9583bc14 EJ |
932 | return; |
933 | } | |
46c88433 | 934 | mirrors |= xbundle_mirror_src(xbridge, in_xbundle); |
9583bc14 EJ |
935 | |
936 | /* Drop frames on bundles reserved for mirroring. */ | |
46c88433 | 937 | if (xbundle_mirror_out(xbridge, in_xbundle)) { |
9583bc14 EJ |
938 | if (ctx->xin->packet != NULL) { |
939 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
940 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet received on port " | |
941 | "%s, which is reserved exclusively for mirroring", | |
46c88433 | 942 | ctx->xbridge->name, in_xbundle->name); |
9583bc14 | 943 | } |
aaa0fbae | 944 | ofpbuf_clear(&ctx->xout->odp_actions); |
9583bc14 EJ |
945 | return; |
946 | } | |
947 | ||
948 | /* Check VLAN. */ | |
949 | vid = vlan_tci_to_vid(orig_flow->vlan_tci); | |
46c88433 | 950 | if (!input_vid_is_valid(vid, in_xbundle, ctx->xin->packet != NULL)) { |
9583bc14 EJ |
951 | return; |
952 | } | |
46c88433 | 953 | vlan = input_vid_to_vlan(in_xbundle, vid); |
9583bc14 | 954 | |
9583bc14 EJ |
955 | if (!mirrors) { |
956 | return; | |
957 | } | |
958 | ||
959 | /* Restore the original packet before adding the mirror actions. */ | |
960 | ctx->xin->flow = *orig_flow; | |
961 | ||
962 | while (mirrors) { | |
ec7ceaed EJ |
963 | mirror_mask_t dup_mirrors; |
964 | struct ofbundle *out; | |
965 | unsigned long *vlans; | |
966 | bool vlan_mirrored; | |
967 | bool has_mirror; | |
968 | int out_vlan; | |
969 | ||
4b6ab2b0 | 970 | has_mirror = mirror_get(xbridge->mbridge, raw_ctz(mirrors), |
ec7ceaed EJ |
971 | &vlans, &dup_mirrors, &out, &out_vlan); |
972 | ovs_assert(has_mirror); | |
973 | ||
974 | if (vlans) { | |
9583bc14 EJ |
975 | ctx->xout->wc.masks.vlan_tci |= htons(VLAN_CFI | VLAN_VID_MASK); |
976 | } | |
ec7ceaed EJ |
977 | vlan_mirrored = !vlans || bitmap_is_set(vlans, vlan); |
978 | free(vlans); | |
9583bc14 | 979 | |
ec7ceaed | 980 | if (!vlan_mirrored) { |
9583bc14 EJ |
981 | mirrors = zero_rightmost_1bit(mirrors); |
982 | continue; | |
983 | } | |
984 | ||
ec7ceaed EJ |
985 | mirrors &= ~dup_mirrors; |
986 | ctx->xout->mirrors |= dup_mirrors; | |
987 | if (out) { | |
46c88433 EJ |
988 | struct xbundle *out_xbundle = xbundle_lookup(out); |
989 | if (out_xbundle) { | |
990 | output_normal(ctx, out_xbundle, vlan); | |
991 | } | |
ec7ceaed | 992 | } else if (vlan != out_vlan |
9583bc14 | 993 | && !eth_addr_is_reserved(orig_flow->dl_dst)) { |
46c88433 | 994 | struct xbundle *xbundle; |
9583bc14 | 995 | |
46c88433 EJ |
996 | LIST_FOR_EACH (xbundle, list_node, &xbridge->xbundles) { |
997 | if (xbundle_includes_vlan(xbundle, out_vlan) | |
998 | && !xbundle_mirror_out(xbridge, xbundle)) { | |
999 | output_normal(ctx, xbundle, out_vlan); | |
9583bc14 EJ |
1000 | } |
1001 | } | |
1002 | } | |
1003 | } | |
1004 | } | |
1005 | ||
1006 | /* Given 'vid', the VID obtained from the 802.1Q header that was received as | |
46c88433 | 1007 | * part of a packet (specify 0 if there was no 802.1Q header), and 'in_xbundle', |
9583bc14 EJ |
1008 | * the bundle on which the packet was received, returns the VLAN to which the |
1009 | * packet belongs. | |
1010 | * | |
1011 | * Both 'vid' and the return value are in the range 0...4095. */ | |
1012 | static uint16_t | |
46c88433 | 1013 | input_vid_to_vlan(const struct xbundle *in_xbundle, uint16_t vid) |
9583bc14 | 1014 | { |
46c88433 | 1015 | switch (in_xbundle->vlan_mode) { |
9583bc14 | 1016 | case PORT_VLAN_ACCESS: |
46c88433 | 1017 | return in_xbundle->vlan; |
9583bc14 EJ |
1018 | break; |
1019 | ||
1020 | case PORT_VLAN_TRUNK: | |
1021 | return vid; | |
1022 | ||
1023 | case PORT_VLAN_NATIVE_UNTAGGED: | |
1024 | case PORT_VLAN_NATIVE_TAGGED: | |
46c88433 | 1025 | return vid ? vid : in_xbundle->vlan; |
9583bc14 EJ |
1026 | |
1027 | default: | |
428b2edd | 1028 | OVS_NOT_REACHED(); |
9583bc14 EJ |
1029 | } |
1030 | } | |
1031 | ||
46c88433 | 1032 | /* Checks whether a packet with the given 'vid' may ingress on 'in_xbundle'. |
9583bc14 EJ |
1033 | * If so, returns true. Otherwise, returns false and, if 'warn' is true, logs |
1034 | * a warning. | |
1035 | * | |
1036 | * 'vid' should be the VID obtained from the 802.1Q header that was received as | |
1037 | * part of a packet (specify 0 if there was no 802.1Q header), in the range | |
1038 | * 0...4095. */ | |
1039 | static bool | |
46c88433 | 1040 | input_vid_is_valid(uint16_t vid, struct xbundle *in_xbundle, bool warn) |
9583bc14 EJ |
1041 | { |
1042 | /* Allow any VID on the OFPP_NONE port. */ | |
46c88433 | 1043 | if (in_xbundle == &ofpp_none_bundle) { |
9583bc14 EJ |
1044 | return true; |
1045 | } | |
1046 | ||
46c88433 | 1047 | switch (in_xbundle->vlan_mode) { |
9583bc14 EJ |
1048 | case PORT_VLAN_ACCESS: |
1049 | if (vid) { | |
1050 | if (warn) { | |
1051 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
46c88433 | 1052 | VLOG_WARN_RL(&rl, "dropping VLAN %"PRIu16" tagged " |
9583bc14 | 1053 | "packet received on port %s configured as VLAN " |
46c88433 EJ |
1054 | "%"PRIu16" access port", vid, in_xbundle->name, |
1055 | in_xbundle->vlan); | |
9583bc14 EJ |
1056 | } |
1057 | return false; | |
1058 | } | |
1059 | return true; | |
1060 | ||
1061 | case PORT_VLAN_NATIVE_UNTAGGED: | |
1062 | case PORT_VLAN_NATIVE_TAGGED: | |
1063 | if (!vid) { | |
1064 | /* Port must always carry its native VLAN. */ | |
1065 | return true; | |
1066 | } | |
1067 | /* Fall through. */ | |
1068 | case PORT_VLAN_TRUNK: | |
46c88433 | 1069 | if (!xbundle_includes_vlan(in_xbundle, vid)) { |
9583bc14 EJ |
1070 | if (warn) { |
1071 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
46c88433 | 1072 | VLOG_WARN_RL(&rl, "dropping VLAN %"PRIu16" packet " |
9583bc14 | 1073 | "received on port %s not configured for trunking " |
46c88433 | 1074 | "VLAN %"PRIu16, vid, in_xbundle->name, vid); |
9583bc14 EJ |
1075 | } |
1076 | return false; | |
1077 | } | |
1078 | return true; | |
1079 | ||
1080 | default: | |
428b2edd | 1081 | OVS_NOT_REACHED(); |
9583bc14 EJ |
1082 | } |
1083 | ||
1084 | } | |
1085 | ||
1086 | /* Given 'vlan', the VLAN that a packet belongs to, and | |
46c88433 | 1087 | * 'out_xbundle', a bundle on which the packet is to be output, returns the VID |
9583bc14 EJ |
1088 | * that should be included in the 802.1Q header. (If the return value is 0, |
1089 | * then the 802.1Q header should only be included in the packet if there is a | |
1090 | * nonzero PCP.) | |
1091 | * | |
1092 | * Both 'vlan' and the return value are in the range 0...4095. */ | |
1093 | static uint16_t | |
46c88433 | 1094 | output_vlan_to_vid(const struct xbundle *out_xbundle, uint16_t vlan) |
9583bc14 | 1095 | { |
46c88433 | 1096 | switch (out_xbundle->vlan_mode) { |
9583bc14 EJ |
1097 | case PORT_VLAN_ACCESS: |
1098 | return 0; | |
1099 | ||
1100 | case PORT_VLAN_TRUNK: | |
1101 | case PORT_VLAN_NATIVE_TAGGED: | |
1102 | return vlan; | |
1103 | ||
1104 | case PORT_VLAN_NATIVE_UNTAGGED: | |
46c88433 | 1105 | return vlan == out_xbundle->vlan ? 0 : vlan; |
9583bc14 EJ |
1106 | |
1107 | default: | |
428b2edd | 1108 | OVS_NOT_REACHED(); |
9583bc14 EJ |
1109 | } |
1110 | } | |
1111 | ||
1112 | static void | |
46c88433 | 1113 | output_normal(struct xlate_ctx *ctx, const struct xbundle *out_xbundle, |
9583bc14 EJ |
1114 | uint16_t vlan) |
1115 | { | |
33bf9176 | 1116 | ovs_be16 *flow_tci = &ctx->xin->flow.vlan_tci; |
9583bc14 EJ |
1117 | uint16_t vid; |
1118 | ovs_be16 tci, old_tci; | |
46c88433 | 1119 | struct xport *xport; |
9583bc14 | 1120 | |
46c88433 EJ |
1121 | vid = output_vlan_to_vid(out_xbundle, vlan); |
1122 | if (list_is_empty(&out_xbundle->xports)) { | |
1123 | /* Partially configured bundle with no slaves. Drop the packet. */ | |
1124 | return; | |
1125 | } else if (!out_xbundle->bond) { | |
1126 | xport = CONTAINER_OF(list_front(&out_xbundle->xports), struct xport, | |
1127 | bundle_node); | |
9583bc14 | 1128 | } else { |
46c88433 EJ |
1129 | struct ofport_dpif *ofport; |
1130 | ||
1131 | ofport = bond_choose_output_slave(out_xbundle->bond, &ctx->xin->flow, | |
4a1b8f30 | 1132 | &ctx->xout->wc, vid); |
5e6af486 | 1133 | xport = xport_lookup(ofport); |
46c88433 EJ |
1134 | |
1135 | if (!xport) { | |
9583bc14 EJ |
1136 | /* No slaves enabled, so drop packet. */ |
1137 | return; | |
1138 | } | |
d6fc5f57 EJ |
1139 | |
1140 | if (ctx->xin->resubmit_stats) { | |
1141 | bond_account(out_xbundle->bond, &ctx->xin->flow, vid, | |
1142 | ctx->xin->resubmit_stats->n_bytes); | |
1143 | } | |
9583bc14 EJ |
1144 | } |
1145 | ||
33bf9176 | 1146 | old_tci = *flow_tci; |
9583bc14 | 1147 | tci = htons(vid); |
46c88433 | 1148 | if (tci || out_xbundle->use_priority_tags) { |
33bf9176 | 1149 | tci |= *flow_tci & htons(VLAN_PCP_MASK); |
9583bc14 EJ |
1150 | if (tci) { |
1151 | tci |= htons(VLAN_CFI); | |
1152 | } | |
1153 | } | |
33bf9176 | 1154 | *flow_tci = tci; |
9583bc14 | 1155 | |
46c88433 | 1156 | compose_output_action(ctx, xport->ofp_port); |
33bf9176 | 1157 | *flow_tci = old_tci; |
9583bc14 EJ |
1158 | } |
1159 | ||
1160 | /* A VM broadcasts a gratuitous ARP to indicate that it has resumed after | |
1161 | * migration. Older Citrix-patched Linux DomU used gratuitous ARP replies to | |
1162 | * indicate this; newer upstream kernels use gratuitous ARP requests. */ | |
1163 | static bool | |
1164 | is_gratuitous_arp(const struct flow *flow, struct flow_wildcards *wc) | |
1165 | { | |
1166 | if (flow->dl_type != htons(ETH_TYPE_ARP)) { | |
1167 | return false; | |
1168 | } | |
1169 | ||
1170 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); | |
1171 | if (!eth_addr_is_broadcast(flow->dl_dst)) { | |
1172 | return false; | |
1173 | } | |
1174 | ||
1175 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); | |
1176 | if (flow->nw_proto == ARP_OP_REPLY) { | |
1177 | return true; | |
1178 | } else if (flow->nw_proto == ARP_OP_REQUEST) { | |
1179 | memset(&wc->masks.nw_src, 0xff, sizeof wc->masks.nw_src); | |
1180 | memset(&wc->masks.nw_dst, 0xff, sizeof wc->masks.nw_dst); | |
1181 | ||
1182 | return flow->nw_src == flow->nw_dst; | |
1183 | } else { | |
1184 | return false; | |
1185 | } | |
1186 | } | |
1187 | ||
ee047520 BP |
1188 | /* Checks whether a MAC learning update is necessary for MAC learning table |
1189 | * 'ml' given that a packet matching 'flow' was received on 'in_xbundle' in | |
1190 | * 'vlan'. | |
1191 | * | |
1192 | * Most packets processed through the MAC learning table do not actually | |
1193 | * change it in any way. This function requires only a read lock on the MAC | |
1194 | * learning table, so it is much cheaper in this common case. | |
1195 | * | |
1196 | * Keep the code here synchronized with that in update_learning_table__() | |
1197 | * below. */ | |
1198 | static bool | |
1199 | is_mac_learning_update_needed(const struct mac_learning *ml, | |
1200 | const struct flow *flow, | |
1201 | struct flow_wildcards *wc, | |
1202 | int vlan, struct xbundle *in_xbundle) | |
d6fc5f57 | 1203 | OVS_REQ_RDLOCK(ml->rwlock) |
9583bc14 EJ |
1204 | { |
1205 | struct mac_entry *mac; | |
1206 | ||
ee047520 BP |
1207 | if (!mac_learning_may_learn(ml, flow->dl_src, vlan)) { |
1208 | return false; | |
1209 | } | |
1210 | ||
1211 | mac = mac_learning_lookup(ml, flow->dl_src, vlan); | |
1212 | if (!mac || mac_entry_age(ml, mac)) { | |
1213 | return true; | |
9583bc14 EJ |
1214 | } |
1215 | ||
ee047520 BP |
1216 | if (is_gratuitous_arp(flow, wc)) { |
1217 | /* We don't want to learn from gratuitous ARP packets that are | |
1218 | * reflected back over bond slaves so we lock the learning table. */ | |
1219 | if (!in_xbundle->bond) { | |
1220 | return true; | |
1221 | } else if (mac_entry_is_grat_arp_locked(mac)) { | |
1222 | return false; | |
1223 | } | |
1224 | } | |
1225 | ||
1226 | return mac->port.p != in_xbundle->ofbundle; | |
1227 | } | |
1228 | ||
1229 | ||
1230 | /* Updates MAC learning table 'ml' given that a packet matching 'flow' was | |
1231 | * received on 'in_xbundle' in 'vlan'. | |
1232 | * | |
1233 | * This code repeats all the checks in is_mac_learning_update_needed() because | |
1234 | * the lock was released between there and here and thus the MAC learning state | |
1235 | * could have changed. | |
1236 | * | |
1237 | * Keep the code here synchronized with that in is_mac_learning_update_needed() | |
1238 | * above. */ | |
1239 | static void | |
1240 | update_learning_table__(const struct xbridge *xbridge, | |
1241 | const struct flow *flow, struct flow_wildcards *wc, | |
1242 | int vlan, struct xbundle *in_xbundle) | |
d6fc5f57 | 1243 | OVS_REQ_WRLOCK(xbridge->ml->rwlock) |
ee047520 BP |
1244 | { |
1245 | struct mac_entry *mac; | |
1246 | ||
46c88433 | 1247 | if (!mac_learning_may_learn(xbridge->ml, flow->dl_src, vlan)) { |
ee047520 | 1248 | return; |
9583bc14 EJ |
1249 | } |
1250 | ||
46c88433 | 1251 | mac = mac_learning_insert(xbridge->ml, flow->dl_src, vlan); |
9583bc14 EJ |
1252 | if (is_gratuitous_arp(flow, wc)) { |
1253 | /* We don't want to learn from gratuitous ARP packets that are | |
1254 | * reflected back over bond slaves so we lock the learning table. */ | |
46c88433 | 1255 | if (!in_xbundle->bond) { |
9583bc14 EJ |
1256 | mac_entry_set_grat_arp_lock(mac); |
1257 | } else if (mac_entry_is_grat_arp_locked(mac)) { | |
ee047520 | 1258 | return; |
9583bc14 EJ |
1259 | } |
1260 | } | |
1261 | ||
30618594 | 1262 | if (mac->port.p != in_xbundle->ofbundle) { |
9583bc14 EJ |
1263 | /* The log messages here could actually be useful in debugging, |
1264 | * so keep the rate limit relatively high. */ | |
1265 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(30, 300); | |
ee047520 | 1266 | |
9583bc14 EJ |
1267 | VLOG_DBG_RL(&rl, "bridge %s: learned that "ETH_ADDR_FMT" is " |
1268 | "on port %s in VLAN %d", | |
46c88433 EJ |
1269 | xbridge->name, ETH_ADDR_ARGS(flow->dl_src), |
1270 | in_xbundle->name, vlan); | |
9583bc14 | 1271 | |
46c88433 | 1272 | mac->port.p = in_xbundle->ofbundle; |
30618594 | 1273 | mac_learning_changed(xbridge->ml); |
9583bc14 | 1274 | } |
ee047520 BP |
1275 | } |
1276 | ||
1277 | static void | |
1278 | update_learning_table(const struct xbridge *xbridge, | |
1279 | const struct flow *flow, struct flow_wildcards *wc, | |
1280 | int vlan, struct xbundle *in_xbundle) | |
1281 | { | |
1282 | bool need_update; | |
1283 | ||
1284 | /* Don't learn the OFPP_NONE port. */ | |
1285 | if (in_xbundle == &ofpp_none_bundle) { | |
1286 | return; | |
1287 | } | |
1288 | ||
1289 | /* First try the common case: no change to MAC learning table. */ | |
1290 | ovs_rwlock_rdlock(&xbridge->ml->rwlock); | |
1291 | need_update = is_mac_learning_update_needed(xbridge->ml, flow, wc, vlan, | |
1292 | in_xbundle); | |
509c0149 | 1293 | ovs_rwlock_unlock(&xbridge->ml->rwlock); |
ee047520 BP |
1294 | |
1295 | if (need_update) { | |
1296 | /* Slow path: MAC learning table might need an update. */ | |
1297 | ovs_rwlock_wrlock(&xbridge->ml->rwlock); | |
1298 | update_learning_table__(xbridge, flow, wc, vlan, in_xbundle); | |
1299 | ovs_rwlock_unlock(&xbridge->ml->rwlock); | |
1300 | } | |
9583bc14 EJ |
1301 | } |
1302 | ||
46c88433 | 1303 | /* Determines whether packets in 'flow' within 'xbridge' should be forwarded or |
9583bc14 EJ |
1304 | * dropped. Returns true if they may be forwarded, false if they should be |
1305 | * dropped. | |
1306 | * | |
46c88433 | 1307 | * 'in_port' must be the xport that corresponds to flow->in_port. |
9583bc14 EJ |
1308 | * 'in_port' must be part of a bundle (e.g. in_port->bundle must be nonnull). |
1309 | * | |
1310 | * 'vlan' must be the VLAN that corresponds to flow->vlan_tci on 'in_port', as | |
1311 | * returned by input_vid_to_vlan(). It must be a valid VLAN for 'in_port', as | |
1312 | * checked by input_vid_is_valid(). | |
1313 | * | |
1314 | * May also add tags to '*tags', although the current implementation only does | |
1315 | * so in one special case. | |
1316 | */ | |
1317 | static bool | |
46c88433 | 1318 | is_admissible(struct xlate_ctx *ctx, struct xport *in_port, |
9583bc14 EJ |
1319 | uint16_t vlan) |
1320 | { | |
46c88433 EJ |
1321 | struct xbundle *in_xbundle = in_port->xbundle; |
1322 | const struct xbridge *xbridge = ctx->xbridge; | |
9583bc14 | 1323 | struct flow *flow = &ctx->xin->flow; |
9583bc14 EJ |
1324 | |
1325 | /* Drop frames for reserved multicast addresses | |
1326 | * only if forward_bpdu option is absent. */ | |
46c88433 | 1327 | if (!xbridge->forward_bpdu && eth_addr_is_reserved(flow->dl_dst)) { |
9583bc14 EJ |
1328 | xlate_report(ctx, "packet has reserved destination MAC, dropping"); |
1329 | return false; | |
1330 | } | |
1331 | ||
46c88433 | 1332 | if (in_xbundle->bond) { |
9583bc14 EJ |
1333 | struct mac_entry *mac; |
1334 | ||
46c88433 | 1335 | switch (bond_check_admissibility(in_xbundle->bond, in_port->ofport, |
4a1b8f30 | 1336 | flow->dl_dst)) { |
9583bc14 EJ |
1337 | case BV_ACCEPT: |
1338 | break; | |
1339 | ||
1340 | case BV_DROP: | |
1341 | xlate_report(ctx, "bonding refused admissibility, dropping"); | |
1342 | return false; | |
1343 | ||
1344 | case BV_DROP_IF_MOVED: | |
509c0149 | 1345 | ovs_rwlock_rdlock(&xbridge->ml->rwlock); |
30618594 | 1346 | mac = mac_learning_lookup(xbridge->ml, flow->dl_src, vlan); |
46c88433 | 1347 | if (mac && mac->port.p != in_xbundle->ofbundle && |
9583bc14 EJ |
1348 | (!is_gratuitous_arp(flow, &ctx->xout->wc) |
1349 | || mac_entry_is_grat_arp_locked(mac))) { | |
509c0149 | 1350 | ovs_rwlock_unlock(&xbridge->ml->rwlock); |
9583bc14 | 1351 | xlate_report(ctx, "SLB bond thinks this packet looped back, " |
d6fc5f57 | 1352 | "dropping"); |
9583bc14 EJ |
1353 | return false; |
1354 | } | |
509c0149 | 1355 | ovs_rwlock_unlock(&xbridge->ml->rwlock); |
9583bc14 EJ |
1356 | break; |
1357 | } | |
1358 | } | |
1359 | ||
1360 | return true; | |
1361 | } | |
1362 | ||
1363 | static void | |
1364 | xlate_normal(struct xlate_ctx *ctx) | |
1365 | { | |
33bf9176 BP |
1366 | struct flow_wildcards *wc = &ctx->xout->wc; |
1367 | struct flow *flow = &ctx->xin->flow; | |
46c88433 EJ |
1368 | struct xbundle *in_xbundle; |
1369 | struct xport *in_port; | |
9583bc14 | 1370 | struct mac_entry *mac; |
d6d5bbc9 | 1371 | void *mac_port; |
9583bc14 EJ |
1372 | uint16_t vlan; |
1373 | uint16_t vid; | |
1374 | ||
1375 | ctx->xout->has_normal = true; | |
1376 | ||
33bf9176 BP |
1377 | memset(&wc->masks.dl_src, 0xff, sizeof wc->masks.dl_src); |
1378 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); | |
1dd35f8a | 1379 | wc->masks.vlan_tci |= htons(VLAN_VID_MASK | VLAN_CFI); |
9583bc14 | 1380 | |
46c88433 EJ |
1381 | in_xbundle = lookup_input_bundle(ctx->xbridge, flow->in_port.ofp_port, |
1382 | ctx->xin->packet != NULL, &in_port); | |
1383 | if (!in_xbundle) { | |
9583bc14 EJ |
1384 | xlate_report(ctx, "no input bundle, dropping"); |
1385 | return; | |
1386 | } | |
1387 | ||
1388 | /* Drop malformed frames. */ | |
33bf9176 BP |
1389 | if (flow->dl_type == htons(ETH_TYPE_VLAN) && |
1390 | !(flow->vlan_tci & htons(VLAN_CFI))) { | |
9583bc14 EJ |
1391 | if (ctx->xin->packet != NULL) { |
1392 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
1393 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet with partial " | |
1394 | "VLAN tag received on port %s", | |
46c88433 | 1395 | ctx->xbridge->name, in_xbundle->name); |
9583bc14 EJ |
1396 | } |
1397 | xlate_report(ctx, "partial VLAN tag, dropping"); | |
1398 | return; | |
1399 | } | |
1400 | ||
1401 | /* Drop frames on bundles reserved for mirroring. */ | |
46c88433 | 1402 | if (xbundle_mirror_out(ctx->xbridge, in_xbundle)) { |
9583bc14 EJ |
1403 | if (ctx->xin->packet != NULL) { |
1404 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
1405 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet received on port " | |
1406 | "%s, which is reserved exclusively for mirroring", | |
46c88433 | 1407 | ctx->xbridge->name, in_xbundle->name); |
9583bc14 EJ |
1408 | } |
1409 | xlate_report(ctx, "input port is mirror output port, dropping"); | |
1410 | return; | |
1411 | } | |
1412 | ||
1413 | /* Check VLAN. */ | |
33bf9176 | 1414 | vid = vlan_tci_to_vid(flow->vlan_tci); |
46c88433 | 1415 | if (!input_vid_is_valid(vid, in_xbundle, ctx->xin->packet != NULL)) { |
9583bc14 EJ |
1416 | xlate_report(ctx, "disallowed VLAN VID for this input port, dropping"); |
1417 | return; | |
1418 | } | |
46c88433 | 1419 | vlan = input_vid_to_vlan(in_xbundle, vid); |
9583bc14 EJ |
1420 | |
1421 | /* Check other admissibility requirements. */ | |
1422 | if (in_port && !is_admissible(ctx, in_port, vlan)) { | |
1423 | return; | |
1424 | } | |
1425 | ||
1426 | /* Learn source MAC. */ | |
1427 | if (ctx->xin->may_learn) { | |
46c88433 | 1428 | update_learning_table(ctx->xbridge, flow, wc, vlan, in_xbundle); |
9583bc14 EJ |
1429 | } |
1430 | ||
1431 | /* Determine output bundle. */ | |
509c0149 | 1432 | ovs_rwlock_rdlock(&ctx->xbridge->ml->rwlock); |
30618594 | 1433 | mac = mac_learning_lookup(ctx->xbridge->ml, flow->dl_dst, vlan); |
d6d5bbc9 EJ |
1434 | mac_port = mac ? mac->port.p : NULL; |
1435 | ovs_rwlock_unlock(&ctx->xbridge->ml->rwlock); | |
1436 | ||
1437 | if (mac_port) { | |
1438 | struct xbundle *mac_xbundle = xbundle_lookup(mac_port); | |
46c88433 | 1439 | if (mac_xbundle && mac_xbundle != in_xbundle) { |
9583bc14 | 1440 | xlate_report(ctx, "forwarding to learned port"); |
46c88433 EJ |
1441 | output_normal(ctx, mac_xbundle, vlan); |
1442 | } else if (!mac_xbundle) { | |
1443 | xlate_report(ctx, "learned port is unknown, dropping"); | |
9583bc14 EJ |
1444 | } else { |
1445 | xlate_report(ctx, "learned port is input port, dropping"); | |
1446 | } | |
1447 | } else { | |
46c88433 | 1448 | struct xbundle *xbundle; |
9583bc14 EJ |
1449 | |
1450 | xlate_report(ctx, "no learned MAC for destination, flooding"); | |
46c88433 EJ |
1451 | LIST_FOR_EACH (xbundle, list_node, &ctx->xbridge->xbundles) { |
1452 | if (xbundle != in_xbundle | |
1453 | && xbundle_includes_vlan(xbundle, vlan) | |
1454 | && xbundle->floodable | |
1455 | && !xbundle_mirror_out(ctx->xbridge, xbundle)) { | |
1456 | output_normal(ctx, xbundle, vlan); | |
9583bc14 EJ |
1457 | } |
1458 | } | |
1459 | ctx->xout->nf_output_iface = NF_OUT_FLOOD; | |
1460 | } | |
1461 | } | |
1462 | ||
1463 | /* Compose SAMPLE action for sFlow or IPFIX. The given probability is | |
1464 | * the number of packets out of UINT32_MAX to sample. The given | |
1465 | * cookie is passed back in the callback for each sampled packet. | |
1466 | */ | |
1467 | static size_t | |
46c88433 | 1468 | compose_sample_action(const struct xbridge *xbridge, |
9583bc14 EJ |
1469 | struct ofpbuf *odp_actions, |
1470 | const struct flow *flow, | |
1471 | const uint32_t probability, | |
1472 | const union user_action_cookie *cookie, | |
1473 | const size_t cookie_size) | |
1474 | { | |
1475 | size_t sample_offset, actions_offset; | |
89a8a7f0 | 1476 | odp_port_t odp_port; |
9583bc14 | 1477 | int cookie_offset; |
89a8a7f0 | 1478 | uint32_t pid; |
9583bc14 EJ |
1479 | |
1480 | sample_offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_SAMPLE); | |
1481 | ||
1482 | nl_msg_put_u32(odp_actions, OVS_SAMPLE_ATTR_PROBABILITY, probability); | |
1483 | ||
1484 | actions_offset = nl_msg_start_nested(odp_actions, OVS_SAMPLE_ATTR_ACTIONS); | |
89a8a7f0 EJ |
1485 | |
1486 | odp_port = ofp_port_to_odp_port(xbridge, flow->in_port.ofp_port); | |
1487 | pid = dpif_port_get_pid(xbridge->dpif, odp_port); | |
1488 | cookie_offset = odp_put_userspace_action(pid, cookie, cookie_size, odp_actions); | |
9583bc14 EJ |
1489 | |
1490 | nl_msg_end_nested(odp_actions, actions_offset); | |
1491 | nl_msg_end_nested(odp_actions, sample_offset); | |
1492 | return cookie_offset; | |
1493 | } | |
1494 | ||
1495 | static void | |
46c88433 EJ |
1496 | compose_sflow_cookie(const struct xbridge *xbridge, ovs_be16 vlan_tci, |
1497 | odp_port_t odp_port, unsigned int n_outputs, | |
1498 | union user_action_cookie *cookie) | |
9583bc14 EJ |
1499 | { |
1500 | int ifindex; | |
1501 | ||
1502 | cookie->type = USER_ACTION_COOKIE_SFLOW; | |
1503 | cookie->sflow.vlan_tci = vlan_tci; | |
1504 | ||
1505 | /* See http://www.sflow.org/sflow_version_5.txt (search for "Input/output | |
1506 | * port information") for the interpretation of cookie->output. */ | |
1507 | switch (n_outputs) { | |
1508 | case 0: | |
1509 | /* 0x40000000 | 256 means "packet dropped for unknown reason". */ | |
1510 | cookie->sflow.output = 0x40000000 | 256; | |
1511 | break; | |
1512 | ||
1513 | case 1: | |
46c88433 | 1514 | ifindex = dpif_sflow_odp_port_to_ifindex(xbridge->sflow, odp_port); |
9583bc14 EJ |
1515 | if (ifindex) { |
1516 | cookie->sflow.output = ifindex; | |
1517 | break; | |
1518 | } | |
1519 | /* Fall through. */ | |
1520 | default: | |
1521 | /* 0x80000000 means "multiple output ports. */ | |
1522 | cookie->sflow.output = 0x80000000 | n_outputs; | |
1523 | break; | |
1524 | } | |
1525 | } | |
1526 | ||
1527 | /* Compose SAMPLE action for sFlow bridge sampling. */ | |
1528 | static size_t | |
46c88433 | 1529 | compose_sflow_action(const struct xbridge *xbridge, |
9583bc14 EJ |
1530 | struct ofpbuf *odp_actions, |
1531 | const struct flow *flow, | |
4e022ec0 | 1532 | odp_port_t odp_port) |
9583bc14 EJ |
1533 | { |
1534 | uint32_t probability; | |
1535 | union user_action_cookie cookie; | |
1536 | ||
46c88433 | 1537 | if (!xbridge->sflow || flow->in_port.ofp_port == OFPP_NONE) { |
9583bc14 EJ |
1538 | return 0; |
1539 | } | |
1540 | ||
46c88433 EJ |
1541 | probability = dpif_sflow_get_probability(xbridge->sflow); |
1542 | compose_sflow_cookie(xbridge, htons(0), odp_port, | |
4e022ec0 | 1543 | odp_port == ODPP_NONE ? 0 : 1, &cookie); |
9583bc14 | 1544 | |
46c88433 | 1545 | return compose_sample_action(xbridge, odp_actions, flow, probability, |
9583bc14 EJ |
1546 | &cookie, sizeof cookie.sflow); |
1547 | } | |
1548 | ||
1549 | static void | |
1550 | compose_flow_sample_cookie(uint16_t probability, uint32_t collector_set_id, | |
1551 | uint32_t obs_domain_id, uint32_t obs_point_id, | |
1552 | union user_action_cookie *cookie) | |
1553 | { | |
1554 | cookie->type = USER_ACTION_COOKIE_FLOW_SAMPLE; | |
1555 | cookie->flow_sample.probability = probability; | |
1556 | cookie->flow_sample.collector_set_id = collector_set_id; | |
1557 | cookie->flow_sample.obs_domain_id = obs_domain_id; | |
1558 | cookie->flow_sample.obs_point_id = obs_point_id; | |
1559 | } | |
1560 | ||
1561 | static void | |
1562 | compose_ipfix_cookie(union user_action_cookie *cookie) | |
1563 | { | |
1564 | cookie->type = USER_ACTION_COOKIE_IPFIX; | |
1565 | } | |
1566 | ||
1567 | /* Compose SAMPLE action for IPFIX bridge sampling. */ | |
1568 | static void | |
46c88433 | 1569 | compose_ipfix_action(const struct xbridge *xbridge, |
9583bc14 EJ |
1570 | struct ofpbuf *odp_actions, |
1571 | const struct flow *flow) | |
1572 | { | |
1573 | uint32_t probability; | |
1574 | union user_action_cookie cookie; | |
1575 | ||
46c88433 | 1576 | if (!xbridge->ipfix || flow->in_port.ofp_port == OFPP_NONE) { |
9583bc14 EJ |
1577 | return; |
1578 | } | |
1579 | ||
46c88433 | 1580 | probability = dpif_ipfix_get_bridge_exporter_probability(xbridge->ipfix); |
9583bc14 EJ |
1581 | compose_ipfix_cookie(&cookie); |
1582 | ||
46c88433 | 1583 | compose_sample_action(xbridge, odp_actions, flow, probability, |
9583bc14 EJ |
1584 | &cookie, sizeof cookie.ipfix); |
1585 | } | |
1586 | ||
1587 | /* SAMPLE action for sFlow must be first action in any given list of | |
1588 | * actions. At this point we do not have all information required to | |
1589 | * build it. So try to build sample action as complete as possible. */ | |
1590 | static void | |
1591 | add_sflow_action(struct xlate_ctx *ctx) | |
1592 | { | |
46c88433 | 1593 | ctx->user_cookie_offset = compose_sflow_action(ctx->xbridge, |
9583bc14 | 1594 | &ctx->xout->odp_actions, |
4e022ec0 | 1595 | &ctx->xin->flow, ODPP_NONE); |
9583bc14 EJ |
1596 | ctx->sflow_odp_port = 0; |
1597 | ctx->sflow_n_outputs = 0; | |
1598 | } | |
1599 | ||
1600 | /* SAMPLE action for IPFIX must be 1st or 2nd action in any given list | |
1601 | * of actions, eventually after the SAMPLE action for sFlow. */ | |
1602 | static void | |
1603 | add_ipfix_action(struct xlate_ctx *ctx) | |
1604 | { | |
46c88433 | 1605 | compose_ipfix_action(ctx->xbridge, &ctx->xout->odp_actions, |
9583bc14 EJ |
1606 | &ctx->xin->flow); |
1607 | } | |
1608 | ||
1609 | /* Fix SAMPLE action according to data collected while composing ODP actions. | |
1610 | * We need to fix SAMPLE actions OVS_SAMPLE_ATTR_ACTIONS attribute, i.e. nested | |
1611 | * USERSPACE action's user-cookie which is required for sflow. */ | |
1612 | static void | |
1613 | fix_sflow_action(struct xlate_ctx *ctx) | |
1614 | { | |
1615 | const struct flow *base = &ctx->base_flow; | |
1616 | union user_action_cookie *cookie; | |
1617 | ||
1618 | if (!ctx->user_cookie_offset) { | |
1619 | return; | |
1620 | } | |
1621 | ||
1622 | cookie = ofpbuf_at(&ctx->xout->odp_actions, ctx->user_cookie_offset, | |
1623 | sizeof cookie->sflow); | |
1624 | ovs_assert(cookie->type == USER_ACTION_COOKIE_SFLOW); | |
1625 | ||
46c88433 | 1626 | compose_sflow_cookie(ctx->xbridge, base->vlan_tci, |
9583bc14 EJ |
1627 | ctx->sflow_odp_port, ctx->sflow_n_outputs, cookie); |
1628 | } | |
1629 | ||
db7d4e46 | 1630 | static enum slow_path_reason |
642dc74d | 1631 | process_special(struct xlate_ctx *ctx, const struct flow *flow, |
46c88433 | 1632 | const struct xport *xport, const struct ofpbuf *packet) |
db7d4e46 | 1633 | { |
642dc74d | 1634 | struct flow_wildcards *wc = &ctx->xout->wc; |
46c88433 | 1635 | const struct xbridge *xbridge = ctx->xbridge; |
642dc74d | 1636 | |
46c88433 | 1637 | if (!xport) { |
db7d4e46 | 1638 | return 0; |
46c88433 | 1639 | } else if (xport->cfm && cfm_should_process_flow(xport->cfm, flow, wc)) { |
db7d4e46 | 1640 | if (packet) { |
46c88433 | 1641 | cfm_process_heartbeat(xport->cfm, packet); |
db7d4e46 JP |
1642 | } |
1643 | return SLOW_CFM; | |
fab52e16 | 1644 | } else if (xport->bfd && bfd_should_process_flow(xport->bfd, flow, wc)) { |
db7d4e46 | 1645 | if (packet) { |
46c88433 | 1646 | bfd_process_packet(xport->bfd, flow, packet); |
60d02c72 AW |
1647 | /* If POLL received, immediately sends FINAL back. */ |
1648 | if (bfd_should_send_packet(xport->bfd)) { | |
1649 | if (xport->peer) { | |
1650 | ofproto_dpif_monitor_port_send_soon(xport->ofport); | |
1651 | } else { | |
1652 | ofproto_dpif_monitor_port_send_soon_safe(xport->ofport); | |
1653 | } | |
1654 | } | |
db7d4e46 JP |
1655 | } |
1656 | return SLOW_BFD; | |
46c88433 | 1657 | } else if (xport->xbundle && xport->xbundle->lacp |
db7d4e46 JP |
1658 | && flow->dl_type == htons(ETH_TYPE_LACP)) { |
1659 | if (packet) { | |
46c88433 | 1660 | lacp_process_packet(xport->xbundle->lacp, xport->ofport, packet); |
db7d4e46 JP |
1661 | } |
1662 | return SLOW_LACP; | |
9d189a50 | 1663 | } else if (xbridge->stp && stp_should_process_flow(flow, wc)) { |
db7d4e46 | 1664 | if (packet) { |
9d189a50 | 1665 | stp_process_packet(xport, packet); |
db7d4e46 JP |
1666 | } |
1667 | return SLOW_STP; | |
1668 | } else { | |
1669 | return 0; | |
1670 | } | |
1671 | } | |
1672 | ||
9583bc14 | 1673 | static void |
4e022ec0 | 1674 | compose_output_action__(struct xlate_ctx *ctx, ofp_port_t ofp_port, |
9583bc14 EJ |
1675 | bool check_stp) |
1676 | { | |
46c88433 | 1677 | const struct xport *xport = get_ofp_port(ctx->xbridge, ofp_port); |
1dd35f8a | 1678 | struct flow_wildcards *wc = &ctx->xout->wc; |
33bf9176 | 1679 | struct flow *flow = &ctx->xin->flow; |
9583bc14 | 1680 | ovs_be16 flow_vlan_tci; |
1362e248 | 1681 | uint32_t flow_pkt_mark; |
9583bc14 | 1682 | uint8_t flow_nw_tos; |
4e022ec0 | 1683 | odp_port_t out_port, odp_port; |
ca077186 | 1684 | uint8_t dscp; |
9583bc14 EJ |
1685 | |
1686 | /* If 'struct flow' gets additional metadata, we'll need to zero it out | |
1687 | * before traversing a patch port. */ | |
8bfd0fda | 1688 | BUILD_ASSERT_DECL(FLOW_WC_SEQ == 24); |
9583bc14 | 1689 | |
46c88433 | 1690 | if (!xport) { |
9583bc14 EJ |
1691 | xlate_report(ctx, "Nonexistent output port"); |
1692 | return; | |
46c88433 | 1693 | } else if (xport->config & OFPUTIL_PC_NO_FWD) { |
9583bc14 EJ |
1694 | xlate_report(ctx, "OFPPC_NO_FWD set, skipping output"); |
1695 | return; | |
9d189a50 | 1696 | } else if (check_stp && !xport_stp_forward_state(xport)) { |
9583bc14 EJ |
1697 | xlate_report(ctx, "STP not in forwarding state, skipping output"); |
1698 | return; | |
1699 | } | |
1700 | ||
46c88433 EJ |
1701 | if (mbridge_has_mirrors(ctx->xbridge->mbridge) && xport->xbundle) { |
1702 | ctx->xout->mirrors |= xbundle_mirror_dst(xport->xbundle->xbridge, | |
1703 | xport->xbundle); | |
cdf5d3a5 EJ |
1704 | } |
1705 | ||
46c88433 EJ |
1706 | if (xport->peer) { |
1707 | const struct xport *peer = xport->peer; | |
9583bc14 | 1708 | struct flow old_flow = ctx->xin->flow; |
9583bc14 | 1709 | enum slow_path_reason special; |
9583bc14 | 1710 | |
46c88433 EJ |
1711 | ctx->xbridge = peer->xbridge; |
1712 | flow->in_port.ofp_port = peer->ofp_port; | |
33bf9176 BP |
1713 | flow->metadata = htonll(0); |
1714 | memset(&flow->tunnel, 0, sizeof flow->tunnel); | |
1715 | memset(flow->regs, 0, sizeof flow->regs); | |
9583bc14 | 1716 | |
642dc74d | 1717 | special = process_special(ctx, &ctx->xin->flow, peer, |
9583bc14 EJ |
1718 | ctx->xin->packet); |
1719 | if (special) { | |
04594cd5 | 1720 | ctx->xout->slow |= special; |
ddd3c975 | 1721 | } else if (may_receive(peer, ctx)) { |
9d189a50 | 1722 | if (xport_stp_forward_state(peer)) { |
4e022ec0 | 1723 | xlate_table_action(ctx, flow->in_port.ofp_port, 0, true); |
9583bc14 EJ |
1724 | } else { |
1725 | /* Forwarding is disabled by STP. Let OFPP_NORMAL and the | |
1726 | * learning action look at the packet, then drop it. */ | |
1727 | struct flow old_base_flow = ctx->base_flow; | |
1728 | size_t old_size = ctx->xout->odp_actions.size; | |
cdf5d3a5 | 1729 | mirror_mask_t old_mirrors = ctx->xout->mirrors; |
4e022ec0 | 1730 | xlate_table_action(ctx, flow->in_port.ofp_port, 0, true); |
cdf5d3a5 | 1731 | ctx->xout->mirrors = old_mirrors; |
9583bc14 EJ |
1732 | ctx->base_flow = old_base_flow; |
1733 | ctx->xout->odp_actions.size = old_size; | |
1734 | } | |
1735 | } | |
1736 | ||
1737 | ctx->xin->flow = old_flow; | |
832554e3 | 1738 | ctx->xbridge = xport->xbridge; |
9583bc14 EJ |
1739 | |
1740 | if (ctx->xin->resubmit_stats) { | |
46c88433 EJ |
1741 | netdev_vport_inc_tx(xport->netdev, ctx->xin->resubmit_stats); |
1742 | netdev_vport_inc_rx(peer->netdev, ctx->xin->resubmit_stats); | |
a1aeea86 AW |
1743 | if (peer->bfd) { |
1744 | bfd_account_rx(peer->bfd, ctx->xin->resubmit_stats); | |
1745 | } | |
9583bc14 EJ |
1746 | } |
1747 | ||
1748 | return; | |
1749 | } | |
1750 | ||
33bf9176 | 1751 | flow_vlan_tci = flow->vlan_tci; |
1362e248 | 1752 | flow_pkt_mark = flow->pkt_mark; |
33bf9176 | 1753 | flow_nw_tos = flow->nw_tos; |
9583bc14 | 1754 | |
55954f6e | 1755 | if (dscp_from_skb_priority(xport, flow->skb_priority, &dscp)) { |
1dd35f8a | 1756 | wc->masks.nw_tos |= IP_ECN_MASK; |
33bf9176 | 1757 | flow->nw_tos &= ~IP_DSCP_MASK; |
ca077186 | 1758 | flow->nw_tos |= dscp; |
9583bc14 EJ |
1759 | } |
1760 | ||
46c88433 | 1761 | if (xport->is_tunnel) { |
9583bc14 EJ |
1762 | /* Save tunnel metadata so that changes made due to |
1763 | * the Logical (tunnel) Port are not visible for any further | |
1764 | * matches, while explicit set actions on tunnel metadata are. | |
1765 | */ | |
33bf9176 | 1766 | struct flow_tnl flow_tnl = flow->tunnel; |
46c88433 | 1767 | odp_port = tnl_port_send(xport->ofport, flow, &ctx->xout->wc); |
4e022ec0 | 1768 | if (odp_port == ODPP_NONE) { |
9583bc14 EJ |
1769 | xlate_report(ctx, "Tunneling decided against output"); |
1770 | goto out; /* restore flow_nw_tos */ | |
1771 | } | |
33bf9176 | 1772 | if (flow->tunnel.ip_dst == ctx->orig_tunnel_ip_dst) { |
9583bc14 EJ |
1773 | xlate_report(ctx, "Not tunneling to our own address"); |
1774 | goto out; /* restore flow_nw_tos */ | |
1775 | } | |
1776 | if (ctx->xin->resubmit_stats) { | |
46c88433 | 1777 | netdev_vport_inc_tx(xport->netdev, ctx->xin->resubmit_stats); |
9583bc14 EJ |
1778 | } |
1779 | out_port = odp_port; | |
33bf9176 | 1780 | commit_odp_tunnel_action(flow, &ctx->base_flow, |
9583bc14 | 1781 | &ctx->xout->odp_actions); |
33bf9176 | 1782 | flow->tunnel = flow_tnl; /* Restore tunnel metadata */ |
9583bc14 | 1783 | } else { |
46c88433 | 1784 | odp_port = xport->odp_port; |
7614e5d0 | 1785 | out_port = odp_port; |
46c88433 | 1786 | if (ofproto_has_vlan_splinters(ctx->xbridge->ofproto)) { |
7614e5d0 JR |
1787 | ofp_port_t vlandev_port; |
1788 | ||
1dd35f8a | 1789 | wc->masks.vlan_tci |= htons(VLAN_VID_MASK | VLAN_CFI); |
7614e5d0 JR |
1790 | vlandev_port = vsp_realdev_to_vlandev(ctx->xbridge->ofproto, |
1791 | ofp_port, flow->vlan_tci); | |
1792 | if (vlandev_port != ofp_port) { | |
1793 | out_port = ofp_port_to_odp_port(ctx->xbridge, vlandev_port); | |
1794 | flow->vlan_tci = htons(0); | |
1795 | } | |
9583bc14 | 1796 | } |
9583bc14 | 1797 | } |
9583bc14 | 1798 | |
4e022ec0 | 1799 | if (out_port != ODPP_NONE) { |
7fd91025 BP |
1800 | ctx->xout->slow |= commit_odp_actions(flow, &ctx->base_flow, |
1801 | &ctx->xout->odp_actions, | |
8bfd0fda | 1802 | &ctx->xout->wc); |
4e022ec0 AW |
1803 | nl_msg_put_odp_port(&ctx->xout->odp_actions, OVS_ACTION_ATTR_OUTPUT, |
1804 | out_port); | |
9583bc14 | 1805 | |
6cbbf4fa EJ |
1806 | ctx->sflow_odp_port = odp_port; |
1807 | ctx->sflow_n_outputs++; | |
1808 | ctx->xout->nf_output_iface = ofp_port; | |
1809 | } | |
1810 | ||
1811 | out: | |
9583bc14 | 1812 | /* Restore flow */ |
33bf9176 | 1813 | flow->vlan_tci = flow_vlan_tci; |
1362e248 | 1814 | flow->pkt_mark = flow_pkt_mark; |
33bf9176 | 1815 | flow->nw_tos = flow_nw_tos; |
9583bc14 EJ |
1816 | } |
1817 | ||
1818 | static void | |
4e022ec0 | 1819 | compose_output_action(struct xlate_ctx *ctx, ofp_port_t ofp_port) |
9583bc14 EJ |
1820 | { |
1821 | compose_output_action__(ctx, ofp_port, true); | |
1822 | } | |
1823 | ||
bb61b33d BP |
1824 | static void |
1825 | xlate_recursively(struct xlate_ctx *ctx, struct rule_dpif *rule) | |
bb61b33d BP |
1826 | { |
1827 | struct rule_dpif *old_rule = ctx->rule; | |
6f00e29b | 1828 | struct rule_actions *actions; |
bb61b33d BP |
1829 | |
1830 | if (ctx->xin->resubmit_stats) { | |
70742c7f | 1831 | rule_dpif_credit_stats(rule, ctx->xin->resubmit_stats); |
bb61b33d BP |
1832 | } |
1833 | ||
98b07853 | 1834 | ctx->resubmits++; |
bb61b33d BP |
1835 | ctx->recurse++; |
1836 | ctx->rule = rule; | |
6f00e29b BP |
1837 | actions = rule_dpif_get_actions(rule); |
1838 | do_xlate_actions(actions->ofpacts, actions->ofpacts_len, ctx); | |
1839 | rule_actions_unref(actions); | |
bb61b33d BP |
1840 | ctx->rule = old_rule; |
1841 | ctx->recurse--; | |
bb61b33d BP |
1842 | } |
1843 | ||
bd3240ba SH |
1844 | static bool |
1845 | xlate_resubmit_resource_check(struct xlate_ctx *ctx) | |
9583bc14 | 1846 | { |
98b07853 BP |
1847 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); |
1848 | ||
1849 | if (ctx->recurse >= MAX_RESUBMIT_RECURSION) { | |
1850 | VLOG_ERR_RL(&rl, "resubmit actions recursed over %d times", | |
1851 | MAX_RESUBMIT_RECURSION); | |
1852 | } else if (ctx->resubmits >= MAX_RESUBMITS) { | |
1853 | VLOG_ERR_RL(&rl, "over %d resubmit actions", MAX_RESUBMITS); | |
1854 | } else if (ctx->xout->odp_actions.size > UINT16_MAX) { | |
1855 | VLOG_ERR_RL(&rl, "resubmits yielded over 64 kB of actions"); | |
1856 | } else if (ctx->stack.size >= 65536) { | |
1857 | VLOG_ERR_RL(&rl, "resubmits yielded over 64 kB of stack"); | |
1858 | } else { | |
bd3240ba SH |
1859 | return true; |
1860 | } | |
1861 | ||
1862 | return false; | |
1863 | } | |
1864 | ||
1865 | static void | |
1866 | xlate_table_action(struct xlate_ctx *ctx, | |
1867 | ofp_port_t in_port, uint8_t table_id, bool may_packet_in) | |
1868 | { | |
1869 | if (xlate_resubmit_resource_check(ctx)) { | |
4e022ec0 | 1870 | ofp_port_t old_in_port = ctx->xin->flow.in_port.ofp_port; |
3f207910 | 1871 | bool skip_wildcards = ctx->xin->skip_wildcards; |
9583bc14 | 1872 | uint8_t old_table_id = ctx->table_id; |
3f207910 | 1873 | struct rule_dpif *rule; |
9583bc14 EJ |
1874 | |
1875 | ctx->table_id = table_id; | |
1876 | ||
bb61b33d BP |
1877 | /* Look up a flow with 'in_port' as the input port. Then restore the |
1878 | * original input port (otherwise OFPP_NORMAL and OFPP_IN_PORT will | |
1879 | * have surprising behavior). */ | |
4e022ec0 | 1880 | ctx->xin->flow.in_port.ofp_port = in_port; |
3f207910 EJ |
1881 | rule_dpif_lookup_in_table(ctx->xbridge->ofproto, &ctx->xin->flow, |
1882 | !skip_wildcards ? &ctx->xout->wc : NULL, | |
a2143702 | 1883 | table_id, &rule); |
4e022ec0 | 1884 | ctx->xin->flow.in_port.ofp_port = old_in_port; |
9583bc14 | 1885 | |
ad3efdcb EJ |
1886 | if (ctx->xin->resubmit_hook) { |
1887 | ctx->xin->resubmit_hook(ctx->xin, rule, ctx->recurse); | |
1888 | } | |
1889 | ||
a2143702 | 1890 | if (!rule && may_packet_in) { |
ad3efdcb EJ |
1891 | struct xport *xport; |
1892 | ||
ad3efdcb EJ |
1893 | /* XXX |
1894 | * check if table configuration flags | |
41b34c7d SH |
1895 | * OFPTC11_TABLE_MISS_CONTROLLER, default. |
1896 | * OFPTC11_TABLE_MISS_CONTINUE, | |
1897 | * OFPTC11_TABLE_MISS_DROP | |
1898 | * When OF1.0, OFPTC11_TABLE_MISS_CONTINUE is used. What to do? */ | |
ad3efdcb | 1899 | xport = get_ofp_port(ctx->xbridge, ctx->xin->flow.in_port.ofp_port); |
70742c7f EJ |
1900 | choose_miss_rule(xport ? xport->config : 0, |
1901 | ctx->xbridge->miss_rule, | |
1902 | ctx->xbridge->no_packet_in_rule, &rule); | |
a2143702 BP |
1903 | } |
1904 | if (rule) { | |
bb61b33d | 1905 | xlate_recursively(ctx, rule); |
a2143702 | 1906 | rule_dpif_unref(rule); |
ad3efdcb EJ |
1907 | } |
1908 | ||
9583bc14 | 1909 | ctx->table_id = old_table_id; |
98b07853 | 1910 | return; |
9583bc14 | 1911 | } |
98b07853 BP |
1912 | |
1913 | ctx->exit = true; | |
9583bc14 EJ |
1914 | } |
1915 | ||
f4fb341b SH |
1916 | static void |
1917 | xlate_group_bucket(struct xlate_ctx *ctx, const struct ofputil_bucket *bucket) | |
1918 | { | |
1919 | uint64_t action_list_stub[1024 / 8]; | |
1920 | struct ofpbuf action_list, action_set; | |
1921 | ||
1922 | ofpbuf_use_const(&action_set, bucket->ofpacts, bucket->ofpacts_len); | |
1923 | ofpbuf_use_stub(&action_list, action_list_stub, sizeof action_list_stub); | |
1924 | ||
1925 | ofpacts_execute_action_set(&action_list, &action_set); | |
1926 | ctx->recurse++; | |
1927 | do_xlate_actions(action_list.data, action_list.size, ctx); | |
1928 | ctx->recurse--; | |
1929 | ||
1930 | ofpbuf_uninit(&action_set); | |
1931 | ofpbuf_uninit(&action_list); | |
1932 | } | |
1933 | ||
1934 | static void | |
1935 | xlate_all_group(struct xlate_ctx *ctx, struct group_dpif *group) | |
1936 | { | |
1937 | const struct ofputil_bucket *bucket; | |
1938 | const struct list *buckets; | |
1939 | struct flow old_flow = ctx->xin->flow; | |
1940 | ||
1941 | group_dpif_get_buckets(group, &buckets); | |
1942 | ||
1943 | LIST_FOR_EACH (bucket, list_node, buckets) { | |
1944 | xlate_group_bucket(ctx, bucket); | |
1945 | /* Roll back flow to previous state. | |
1946 | * This is equivalent to cloning the packet for each bucket. | |
1947 | * | |
1948 | * As a side effect any subsequently applied actions will | |
1949 | * also effectively be applied to a clone of the packet taken | |
1950 | * just before applying the all or indirect group. */ | |
1951 | ctx->xin->flow = old_flow; | |
1952 | } | |
1953 | } | |
1954 | ||
dd8cd4b4 SH |
1955 | static void |
1956 | xlate_ff_group(struct xlate_ctx *ctx, struct group_dpif *group) | |
1957 | { | |
1958 | const struct ofputil_bucket *bucket; | |
1959 | ||
1960 | bucket = group_first_live_bucket(ctx, group, 0); | |
1961 | if (bucket) { | |
1962 | xlate_group_bucket(ctx, bucket); | |
1963 | } | |
1964 | } | |
1965 | ||
fe7e5749 SH |
1966 | static void |
1967 | xlate_select_group(struct xlate_ctx *ctx, struct group_dpif *group) | |
1968 | { | |
1969 | struct flow_wildcards *wc = &ctx->xout->wc; | |
1970 | const struct ofputil_bucket *bucket; | |
1971 | uint32_t basis; | |
1972 | ||
1973 | basis = hash_bytes(ctx->xin->flow.dl_dst, sizeof ctx->xin->flow.dl_dst, 0); | |
1974 | bucket = group_best_live_bucket(ctx, group, basis); | |
1975 | if (bucket) { | |
1976 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); | |
1977 | xlate_group_bucket(ctx, bucket); | |
1978 | } | |
1979 | } | |
1980 | ||
f4fb341b SH |
1981 | static void |
1982 | xlate_group_action__(struct xlate_ctx *ctx, struct group_dpif *group) | |
1983 | { | |
5a070238 BP |
1984 | ctx->in_group = true; |
1985 | ||
f4fb341b SH |
1986 | switch (group_dpif_get_type(group)) { |
1987 | case OFPGT11_ALL: | |
1988 | case OFPGT11_INDIRECT: | |
1989 | xlate_all_group(ctx, group); | |
1990 | break; | |
1991 | case OFPGT11_SELECT: | |
fe7e5749 | 1992 | xlate_select_group(ctx, group); |
f4fb341b | 1993 | break; |
dd8cd4b4 SH |
1994 | case OFPGT11_FF: |
1995 | xlate_ff_group(ctx, group); | |
1996 | break; | |
f4fb341b | 1997 | default: |
428b2edd | 1998 | OVS_NOT_REACHED(); |
f4fb341b SH |
1999 | } |
2000 | group_dpif_release(group); | |
5a070238 BP |
2001 | |
2002 | ctx->in_group = false; | |
2003 | } | |
2004 | ||
2005 | static bool | |
2006 | xlate_group_resource_check(struct xlate_ctx *ctx) | |
2007 | { | |
2008 | if (!xlate_resubmit_resource_check(ctx)) { | |
2009 | return false; | |
2010 | } else if (ctx->in_group) { | |
2011 | /* Prevent nested translation of OpenFlow groups. | |
2012 | * | |
2013 | * OpenFlow allows this restriction. We enforce this restriction only | |
2014 | * because, with the current architecture, we would otherwise have to | |
2015 | * take a possibly recursive read lock on the ofgroup rwlock, which is | |
2016 | * unsafe given that POSIX allows taking a read lock to block if there | |
2017 | * is a thread blocked on taking the write lock. Other solutions | |
2018 | * without this restriction are also possible, but seem unwarranted | |
2019 | * given the current limited use of groups. */ | |
2020 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); | |
2021 | ||
2022 | VLOG_ERR_RL(&rl, "cannot recursively translate OpenFlow group"); | |
2023 | return false; | |
2024 | } else { | |
2025 | return true; | |
2026 | } | |
f4fb341b SH |
2027 | } |
2028 | ||
2029 | static bool | |
2030 | xlate_group_action(struct xlate_ctx *ctx, uint32_t group_id) | |
2031 | { | |
5a070238 | 2032 | if (xlate_group_resource_check(ctx)) { |
f4fb341b SH |
2033 | struct group_dpif *group; |
2034 | bool got_group; | |
2035 | ||
2036 | got_group = group_dpif_lookup(ctx->xbridge->ofproto, group_id, &group); | |
2037 | if (got_group) { | |
2038 | xlate_group_action__(ctx, group); | |
2039 | } else { | |
2040 | return true; | |
2041 | } | |
2042 | } | |
2043 | ||
2044 | return false; | |
2045 | } | |
2046 | ||
9583bc14 EJ |
2047 | static void |
2048 | xlate_ofpact_resubmit(struct xlate_ctx *ctx, | |
2049 | const struct ofpact_resubmit *resubmit) | |
2050 | { | |
4e022ec0 | 2051 | ofp_port_t in_port; |
9583bc14 EJ |
2052 | uint8_t table_id; |
2053 | ||
2054 | in_port = resubmit->in_port; | |
2055 | if (in_port == OFPP_IN_PORT) { | |
4e022ec0 | 2056 | in_port = ctx->xin->flow.in_port.ofp_port; |
9583bc14 EJ |
2057 | } |
2058 | ||
2059 | table_id = resubmit->table_id; | |
2060 | if (table_id == 255) { | |
2061 | table_id = ctx->table_id; | |
2062 | } | |
2063 | ||
2064 | xlate_table_action(ctx, in_port, table_id, false); | |
2065 | } | |
2066 | ||
2067 | static void | |
2068 | flood_packets(struct xlate_ctx *ctx, bool all) | |
2069 | { | |
46c88433 | 2070 | const struct xport *xport; |
9583bc14 | 2071 | |
46c88433 EJ |
2072 | HMAP_FOR_EACH (xport, ofp_node, &ctx->xbridge->xports) { |
2073 | if (xport->ofp_port == ctx->xin->flow.in_port.ofp_port) { | |
9583bc14 EJ |
2074 | continue; |
2075 | } | |
2076 | ||
2077 | if (all) { | |
46c88433 EJ |
2078 | compose_output_action__(ctx, xport->ofp_port, false); |
2079 | } else if (!(xport->config & OFPUTIL_PC_NO_FLOOD)) { | |
2080 | compose_output_action(ctx, xport->ofp_port); | |
9583bc14 EJ |
2081 | } |
2082 | } | |
2083 | ||
2084 | ctx->xout->nf_output_iface = NF_OUT_FLOOD; | |
2085 | } | |
2086 | ||
2087 | static void | |
2088 | execute_controller_action(struct xlate_ctx *ctx, int len, | |
2089 | enum ofp_packet_in_reason reason, | |
2090 | uint16_t controller_id) | |
2091 | { | |
0fb7792a | 2092 | struct ofproto_packet_in *pin; |
9583bc14 | 2093 | struct ofpbuf *packet; |
758c456d | 2094 | struct pkt_metadata md = PKT_METADATA_INITIALIZER(0); |
9583bc14 | 2095 | |
04594cd5 | 2096 | ctx->xout->slow |= SLOW_CONTROLLER; |
9583bc14 EJ |
2097 | if (!ctx->xin->packet) { |
2098 | return; | |
2099 | } | |
2100 | ||
2101 | packet = ofpbuf_clone(ctx->xin->packet); | |
2102 | ||
7fd91025 BP |
2103 | ctx->xout->slow |= commit_odp_actions(&ctx->xin->flow, &ctx->base_flow, |
2104 | &ctx->xout->odp_actions, | |
8bfd0fda | 2105 | &ctx->xout->wc); |
9583bc14 | 2106 | |
758c456d | 2107 | odp_execute_actions(NULL, packet, &md, ctx->xout->odp_actions.data, |
09f9da0b | 2108 | ctx->xout->odp_actions.size, NULL); |
9583bc14 | 2109 | |
ada3a58d | 2110 | pin = xmalloc(sizeof *pin); |
0fb7792a BP |
2111 | pin->up.packet_len = packet->size; |
2112 | pin->up.packet = ofpbuf_steal_data(packet); | |
2113 | pin->up.reason = reason; | |
0fb7792a | 2114 | pin->up.table_id = ctx->table_id; |
d4fa4e79 BP |
2115 | pin->up.cookie = (ctx->rule |
2116 | ? rule_dpif_get_flow_cookie(ctx->rule) | |
2117 | : OVS_BE64_MAX); | |
0fb7792a | 2118 | |
0fb7792a | 2119 | flow_get_metadata(&ctx->xin->flow, &pin->up.fmd); |
9583bc14 | 2120 | |
f11c7538 | 2121 | pin->controller_id = controller_id; |
d38a3c7b | 2122 | pin->send_len = len; |
cfa955b0 YT |
2123 | pin->generated_by_table_miss = (ctx->rule |
2124 | && rule_dpif_is_table_miss(ctx->rule)); | |
ada3a58d | 2125 | ofproto_dpif_send_packet_in(ctx->xbridge->ofproto, pin); |
9583bc14 EJ |
2126 | ofpbuf_delete(packet); |
2127 | } | |
2128 | ||
8bfd0fda BP |
2129 | static void |
2130 | compose_mpls_push_action(struct xlate_ctx *ctx, struct ofpact_push_mpls *mpls) | |
9583bc14 | 2131 | { |
33bf9176 BP |
2132 | struct flow_wildcards *wc = &ctx->xout->wc; |
2133 | struct flow *flow = &ctx->xin->flow; | |
8bfd0fda | 2134 | int n; |
33bf9176 | 2135 | |
8bfd0fda | 2136 | ovs_assert(eth_type_mpls(mpls->ethertype)); |
b0a17866 | 2137 | |
8bfd0fda BP |
2138 | n = flow_count_mpls_labels(flow, wc); |
2139 | if (!n) { | |
8bfd0fda BP |
2140 | ctx->xout->slow |= commit_odp_actions(flow, &ctx->base_flow, |
2141 | &ctx->xout->odp_actions, | |
2142 | &ctx->xout->wc); | |
2143 | } else if (n >= FLOW_MAX_MPLS_LABELS) { | |
2144 | if (ctx->xin->packet != NULL) { | |
2145 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
2146 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet on which an " | |
2147 | "MPLS push action can't be performed as it would " | |
2148 | "have more MPLS LSEs than the %d supported.", | |
2149 | ctx->xbridge->name, FLOW_MAX_MPLS_LABELS); | |
9583bc14 | 2150 | } |
8bfd0fda BP |
2151 | ctx->exit = true; |
2152 | return; | |
2153 | } else if (n >= ctx->xbridge->max_mpls_depth) { | |
2154 | COVERAGE_INC(xlate_actions_mpls_overflow); | |
2155 | ctx->xout->slow |= SLOW_ACTION; | |
9583bc14 | 2156 | } |
b0a17866 | 2157 | |
8bfd0fda | 2158 | flow_push_mpls(flow, n, mpls->ethertype, wc); |
9583bc14 EJ |
2159 | } |
2160 | ||
8bfd0fda | 2161 | static void |
9cfef3d0 | 2162 | compose_mpls_pop_action(struct xlate_ctx *ctx, ovs_be16 eth_type) |
9583bc14 | 2163 | { |
33bf9176 | 2164 | struct flow_wildcards *wc = &ctx->xout->wc; |
8bfd0fda BP |
2165 | struct flow *flow = &ctx->xin->flow; |
2166 | int n = flow_count_mpls_labels(flow, wc); | |
33bf9176 | 2167 | |
8bfd0fda BP |
2168 | if (!flow_pop_mpls(flow, n, eth_type, wc) && n >= FLOW_MAX_MPLS_LABELS) { |
2169 | if (ctx->xin->packet != NULL) { | |
2170 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
2171 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet on which an " | |
2172 | "MPLS pop action can't be performed as it has " | |
2173 | "more MPLS LSEs than the %d supported.", | |
2174 | ctx->xbridge->name, FLOW_MAX_MPLS_LABELS); | |
2175 | } | |
2176 | ctx->exit = true; | |
2177 | ofpbuf_clear(&ctx->xout->odp_actions); | |
9583bc14 EJ |
2178 | } |
2179 | } | |
2180 | ||
2181 | static bool | |
2182 | compose_dec_ttl(struct xlate_ctx *ctx, struct ofpact_cnt_ids *ids) | |
2183 | { | |
33bf9176 BP |
2184 | struct flow *flow = &ctx->xin->flow; |
2185 | ||
2186 | if (!is_ip_any(flow)) { | |
9583bc14 EJ |
2187 | return false; |
2188 | } | |
2189 | ||
1dd35f8a | 2190 | ctx->xout->wc.masks.nw_ttl = 0xff; |
33bf9176 BP |
2191 | if (flow->nw_ttl > 1) { |
2192 | flow->nw_ttl--; | |
9583bc14 EJ |
2193 | return false; |
2194 | } else { | |
2195 | size_t i; | |
2196 | ||
2197 | for (i = 0; i < ids->n_controllers; i++) { | |
2198 | execute_controller_action(ctx, UINT16_MAX, OFPR_INVALID_TTL, | |
2199 | ids->cnt_ids[i]); | |
2200 | } | |
2201 | ||
2202 | /* Stop processing for current table. */ | |
2203 | return true; | |
2204 | } | |
2205 | } | |
2206 | ||
8bfd0fda | 2207 | static void |
097d4939 JR |
2208 | compose_set_mpls_label_action(struct xlate_ctx *ctx, ovs_be32 label) |
2209 | { | |
8bfd0fda BP |
2210 | if (eth_type_mpls(ctx->xin->flow.dl_type)) { |
2211 | ctx->xout->wc.masks.mpls_lse[0] |= htonl(MPLS_LABEL_MASK); | |
2212 | set_mpls_lse_label(&ctx->xin->flow.mpls_lse[0], label); | |
097d4939 | 2213 | } |
097d4939 JR |
2214 | } |
2215 | ||
8bfd0fda | 2216 | static void |
097d4939 JR |
2217 | compose_set_mpls_tc_action(struct xlate_ctx *ctx, uint8_t tc) |
2218 | { | |
8bfd0fda BP |
2219 | if (eth_type_mpls(ctx->xin->flow.dl_type)) { |
2220 | ctx->xout->wc.masks.mpls_lse[0] |= htonl(MPLS_TC_MASK); | |
2221 | set_mpls_lse_tc(&ctx->xin->flow.mpls_lse[0], tc); | |
097d4939 | 2222 | } |
097d4939 JR |
2223 | } |
2224 | ||
8bfd0fda | 2225 | static void |
9cfef3d0 | 2226 | compose_set_mpls_ttl_action(struct xlate_ctx *ctx, uint8_t ttl) |
9583bc14 | 2227 | { |
8bfd0fda BP |
2228 | if (eth_type_mpls(ctx->xin->flow.dl_type)) { |
2229 | ctx->xout->wc.masks.mpls_lse[0] |= htonl(MPLS_TTL_MASK); | |
2230 | set_mpls_lse_ttl(&ctx->xin->flow.mpls_lse[0], ttl); | |
b0a17866 | 2231 | } |
9583bc14 EJ |
2232 | } |
2233 | ||
2234 | static bool | |
9cfef3d0 | 2235 | compose_dec_mpls_ttl_action(struct xlate_ctx *ctx) |
9583bc14 | 2236 | { |
33bf9176 | 2237 | struct flow *flow = &ctx->xin->flow; |
8bfd0fda | 2238 | uint8_t ttl = mpls_lse_to_ttl(flow->mpls_lse[0]); |
1dd35f8a JP |
2239 | struct flow_wildcards *wc = &ctx->xout->wc; |
2240 | ||
1dd35f8a | 2241 | memset(&wc->masks.mpls_lse, 0xff, sizeof wc->masks.mpls_lse); |
8bfd0fda BP |
2242 | if (eth_type_mpls(flow->dl_type)) { |
2243 | if (ttl > 1) { | |
2244 | ttl--; | |
2245 | set_mpls_lse_ttl(&flow->mpls_lse[0], ttl); | |
2246 | return false; | |
2247 | } else { | |
2248 | execute_controller_action(ctx, UINT16_MAX, OFPR_INVALID_TTL, 0); | |
9583bc14 | 2249 | |
8bfd0fda BP |
2250 | /* Stop processing for current table. */ |
2251 | return true; | |
2252 | } | |
9583bc14 | 2253 | } else { |
9583bc14 EJ |
2254 | return true; |
2255 | } | |
2256 | } | |
2257 | ||
2258 | static void | |
2259 | xlate_output_action(struct xlate_ctx *ctx, | |
4e022ec0 | 2260 | ofp_port_t port, uint16_t max_len, bool may_packet_in) |
9583bc14 | 2261 | { |
4e022ec0 | 2262 | ofp_port_t prev_nf_output_iface = ctx->xout->nf_output_iface; |
9583bc14 EJ |
2263 | |
2264 | ctx->xout->nf_output_iface = NF_OUT_DROP; | |
2265 | ||
2266 | switch (port) { | |
2267 | case OFPP_IN_PORT: | |
4e022ec0 | 2268 | compose_output_action(ctx, ctx->xin->flow.in_port.ofp_port); |
9583bc14 EJ |
2269 | break; |
2270 | case OFPP_TABLE: | |
4e022ec0 AW |
2271 | xlate_table_action(ctx, ctx->xin->flow.in_port.ofp_port, |
2272 | 0, may_packet_in); | |
9583bc14 EJ |
2273 | break; |
2274 | case OFPP_NORMAL: | |
2275 | xlate_normal(ctx); | |
2276 | break; | |
2277 | case OFPP_FLOOD: | |
2278 | flood_packets(ctx, false); | |
2279 | break; | |
2280 | case OFPP_ALL: | |
2281 | flood_packets(ctx, true); | |
2282 | break; | |
2283 | case OFPP_CONTROLLER: | |
2284 | execute_controller_action(ctx, max_len, OFPR_ACTION, 0); | |
2285 | break; | |
2286 | case OFPP_NONE: | |
2287 | break; | |
2288 | case OFPP_LOCAL: | |
2289 | default: | |
4e022ec0 | 2290 | if (port != ctx->xin->flow.in_port.ofp_port) { |
9583bc14 EJ |
2291 | compose_output_action(ctx, port); |
2292 | } else { | |
2293 | xlate_report(ctx, "skipping output to input port"); | |
2294 | } | |
2295 | break; | |
2296 | } | |
2297 | ||
2298 | if (prev_nf_output_iface == NF_OUT_FLOOD) { | |
2299 | ctx->xout->nf_output_iface = NF_OUT_FLOOD; | |
2300 | } else if (ctx->xout->nf_output_iface == NF_OUT_DROP) { | |
2301 | ctx->xout->nf_output_iface = prev_nf_output_iface; | |
2302 | } else if (prev_nf_output_iface != NF_OUT_DROP && | |
2303 | ctx->xout->nf_output_iface != NF_OUT_FLOOD) { | |
2304 | ctx->xout->nf_output_iface = NF_OUT_MULTI; | |
2305 | } | |
2306 | } | |
2307 | ||
2308 | static void | |
2309 | xlate_output_reg_action(struct xlate_ctx *ctx, | |
2310 | const struct ofpact_output_reg *or) | |
2311 | { | |
2312 | uint64_t port = mf_get_subfield(&or->src, &ctx->xin->flow); | |
2313 | if (port <= UINT16_MAX) { | |
2314 | union mf_subvalue value; | |
2315 | ||
2316 | memset(&value, 0xff, sizeof value); | |
2317 | mf_write_subfield_flow(&or->src, &value, &ctx->xout->wc.masks); | |
4e022ec0 AW |
2318 | xlate_output_action(ctx, u16_to_ofp(port), |
2319 | or->max_len, false); | |
9583bc14 EJ |
2320 | } |
2321 | } | |
2322 | ||
2323 | static void | |
2324 | xlate_enqueue_action(struct xlate_ctx *ctx, | |
2325 | const struct ofpact_enqueue *enqueue) | |
2326 | { | |
4e022ec0 | 2327 | ofp_port_t ofp_port = enqueue->port; |
9583bc14 EJ |
2328 | uint32_t queue_id = enqueue->queue; |
2329 | uint32_t flow_priority, priority; | |
2330 | int error; | |
2331 | ||
2332 | /* Translate queue to priority. */ | |
89a8a7f0 | 2333 | error = dpif_queue_to_priority(ctx->xbridge->dpif, queue_id, &priority); |
9583bc14 EJ |
2334 | if (error) { |
2335 | /* Fall back to ordinary output action. */ | |
2336 | xlate_output_action(ctx, enqueue->port, 0, false); | |
2337 | return; | |
2338 | } | |
2339 | ||
2340 | /* Check output port. */ | |
2341 | if (ofp_port == OFPP_IN_PORT) { | |
4e022ec0 AW |
2342 | ofp_port = ctx->xin->flow.in_port.ofp_port; |
2343 | } else if (ofp_port == ctx->xin->flow.in_port.ofp_port) { | |
9583bc14 EJ |
2344 | return; |
2345 | } | |
2346 | ||
2347 | /* Add datapath actions. */ | |
2348 | flow_priority = ctx->xin->flow.skb_priority; | |
2349 | ctx->xin->flow.skb_priority = priority; | |
2350 | compose_output_action(ctx, ofp_port); | |
2351 | ctx->xin->flow.skb_priority = flow_priority; | |
2352 | ||
2353 | /* Update NetFlow output port. */ | |
2354 | if (ctx->xout->nf_output_iface == NF_OUT_DROP) { | |
2355 | ctx->xout->nf_output_iface = ofp_port; | |
2356 | } else if (ctx->xout->nf_output_iface != NF_OUT_FLOOD) { | |
2357 | ctx->xout->nf_output_iface = NF_OUT_MULTI; | |
2358 | } | |
2359 | } | |
2360 | ||
2361 | static void | |
2362 | xlate_set_queue_action(struct xlate_ctx *ctx, uint32_t queue_id) | |
2363 | { | |
2364 | uint32_t skb_priority; | |
2365 | ||
89a8a7f0 | 2366 | if (!dpif_queue_to_priority(ctx->xbridge->dpif, queue_id, &skb_priority)) { |
9583bc14 EJ |
2367 | ctx->xin->flow.skb_priority = skb_priority; |
2368 | } else { | |
2369 | /* Couldn't translate queue to a priority. Nothing to do. A warning | |
2370 | * has already been logged. */ | |
2371 | } | |
2372 | } | |
2373 | ||
2374 | static bool | |
46c88433 | 2375 | slave_enabled_cb(ofp_port_t ofp_port, void *xbridge_) |
9583bc14 | 2376 | { |
46c88433 EJ |
2377 | const struct xbridge *xbridge = xbridge_; |
2378 | struct xport *port; | |
9583bc14 EJ |
2379 | |
2380 | switch (ofp_port) { | |
2381 | case OFPP_IN_PORT: | |
2382 | case OFPP_TABLE: | |
2383 | case OFPP_NORMAL: | |
2384 | case OFPP_FLOOD: | |
2385 | case OFPP_ALL: | |
2386 | case OFPP_NONE: | |
2387 | return true; | |
2388 | case OFPP_CONTROLLER: /* Not supported by the bundle action. */ | |
2389 | return false; | |
2390 | default: | |
46c88433 | 2391 | port = get_ofp_port(xbridge, ofp_port); |
9583bc14 EJ |
2392 | return port ? port->may_enable : false; |
2393 | } | |
2394 | } | |
2395 | ||
2396 | static void | |
2397 | xlate_bundle_action(struct xlate_ctx *ctx, | |
2398 | const struct ofpact_bundle *bundle) | |
2399 | { | |
4e022ec0 | 2400 | ofp_port_t port; |
9583bc14 EJ |
2401 | |
2402 | port = bundle_execute(bundle, &ctx->xin->flow, &ctx->xout->wc, | |
46c88433 EJ |
2403 | slave_enabled_cb, |
2404 | CONST_CAST(struct xbridge *, ctx->xbridge)); | |
9583bc14 | 2405 | if (bundle->dst.field) { |
f74e7df7 JP |
2406 | nxm_reg_load(&bundle->dst, ofp_to_u16(port), &ctx->xin->flow, |
2407 | &ctx->xout->wc); | |
9583bc14 EJ |
2408 | } else { |
2409 | xlate_output_action(ctx, port, 0, false); | |
2410 | } | |
2411 | } | |
2412 | ||
2413 | static void | |
2414 | xlate_learn_action(struct xlate_ctx *ctx, | |
2415 | const struct ofpact_learn *learn) | |
2416 | { | |
1b63b91e BP |
2417 | uint64_t ofpacts_stub[1024 / 8]; |
2418 | struct ofputil_flow_mod fm; | |
9583bc14 | 2419 | struct ofpbuf ofpacts; |
9583bc14 EJ |
2420 | |
2421 | ctx->xout->has_learn = true; | |
2422 | ||
2423 | learn_mask(learn, &ctx->xout->wc); | |
2424 | ||
2425 | if (!ctx->xin->may_learn) { | |
2426 | return; | |
2427 | } | |
2428 | ||
1b63b91e BP |
2429 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); |
2430 | learn_execute(learn, &ctx->xin->flow, &fm, &ofpacts); | |
2431 | ofproto_dpif_flow_mod(ctx->xbridge->ofproto, &fm); | |
2432 | ofpbuf_uninit(&ofpacts); | |
9583bc14 EJ |
2433 | } |
2434 | ||
9583bc14 EJ |
2435 | static void |
2436 | xlate_fin_timeout(struct xlate_ctx *ctx, | |
2437 | const struct ofpact_fin_timeout *oft) | |
2438 | { | |
2439 | if (ctx->xin->tcp_flags & (TCP_FIN | TCP_RST) && ctx->rule) { | |
70742c7f EJ |
2440 | rule_dpif_reduce_timeouts(ctx->rule, oft->fin_idle_timeout, |
2441 | oft->fin_hard_timeout); | |
9583bc14 EJ |
2442 | } |
2443 | } | |
2444 | ||
2445 | static void | |
2446 | xlate_sample_action(struct xlate_ctx *ctx, | |
2447 | const struct ofpact_sample *os) | |
2448 | { | |
2449 | union user_action_cookie cookie; | |
2450 | /* Scale the probability from 16-bit to 32-bit while representing | |
2451 | * the same percentage. */ | |
2452 | uint32_t probability = (os->probability << 16) | os->probability; | |
2453 | ||
4b97b70d BP |
2454 | if (!ctx->xbridge->variable_length_userdata) { |
2455 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); | |
2456 | ||
2457 | VLOG_ERR_RL(&rl, "ignoring NXAST_SAMPLE action because datapath " | |
2458 | "lacks support (needs Linux 3.10+ or kernel module from " | |
2459 | "OVS 1.11+)"); | |
2460 | return; | |
2461 | } | |
2462 | ||
7fd91025 BP |
2463 | ctx->xout->slow |= commit_odp_actions(&ctx->xin->flow, &ctx->base_flow, |
2464 | &ctx->xout->odp_actions, | |
8bfd0fda | 2465 | &ctx->xout->wc); |
9583bc14 EJ |
2466 | |
2467 | compose_flow_sample_cookie(os->probability, os->collector_set_id, | |
2468 | os->obs_domain_id, os->obs_point_id, &cookie); | |
46c88433 | 2469 | compose_sample_action(ctx->xbridge, &ctx->xout->odp_actions, &ctx->xin->flow, |
9583bc14 EJ |
2470 | probability, &cookie, sizeof cookie.flow_sample); |
2471 | } | |
2472 | ||
2473 | static bool | |
46c88433 | 2474 | may_receive(const struct xport *xport, struct xlate_ctx *ctx) |
9583bc14 | 2475 | { |
46c88433 EJ |
2476 | if (xport->config & (eth_addr_equals(ctx->xin->flow.dl_dst, eth_addr_stp) |
2477 | ? OFPUTIL_PC_NO_RECV_STP | |
2478 | : OFPUTIL_PC_NO_RECV)) { | |
9583bc14 EJ |
2479 | return false; |
2480 | } | |
2481 | ||
2482 | /* Only drop packets here if both forwarding and learning are | |
2483 | * disabled. If just learning is enabled, we need to have | |
2484 | * OFPP_NORMAL and the learning action have a look at the packet | |
2485 | * before we can drop it. */ | |
9d189a50 | 2486 | if (!xport_stp_forward_state(xport) && !xport_stp_learn_state(xport)) { |
9583bc14 EJ |
2487 | return false; |
2488 | } | |
2489 | ||
2490 | return true; | |
2491 | } | |
2492 | ||
7fdb60a7 SH |
2493 | static void |
2494 | xlate_write_actions(struct xlate_ctx *ctx, const struct ofpact *a) | |
2495 | { | |
2496 | struct ofpact_nest *on = ofpact_get_WRITE_ACTIONS(a); | |
2497 | ofpbuf_put(&ctx->action_set, on->actions, ofpact_nest_get_action_len(on)); | |
2498 | ofpact_pad(&ctx->action_set); | |
2499 | } | |
2500 | ||
2501 | static void | |
2502 | xlate_action_set(struct xlate_ctx *ctx) | |
2503 | { | |
2504 | uint64_t action_list_stub[1024 / 64]; | |
2505 | struct ofpbuf action_list; | |
2506 | ||
2507 | ofpbuf_use_stub(&action_list, action_list_stub, sizeof action_list_stub); | |
2508 | ofpacts_execute_action_set(&action_list, &ctx->action_set); | |
2509 | do_xlate_actions(action_list.data, action_list.size, ctx); | |
2510 | ofpbuf_uninit(&action_list); | |
2511 | } | |
2512 | ||
9583bc14 EJ |
2513 | static void |
2514 | do_xlate_actions(const struct ofpact *ofpacts, size_t ofpacts_len, | |
2515 | struct xlate_ctx *ctx) | |
2516 | { | |
33bf9176 BP |
2517 | struct flow_wildcards *wc = &ctx->xout->wc; |
2518 | struct flow *flow = &ctx->xin->flow; | |
9583bc14 EJ |
2519 | const struct ofpact *a; |
2520 | ||
f47ea021 JR |
2521 | /* dl_type already in the mask, not set below. */ |
2522 | ||
9583bc14 EJ |
2523 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { |
2524 | struct ofpact_controller *controller; | |
2525 | const struct ofpact_metadata *metadata; | |
b2dd70be JR |
2526 | const struct ofpact_set_field *set_field; |
2527 | const struct mf_field *mf; | |
9583bc14 EJ |
2528 | |
2529 | if (ctx->exit) { | |
2530 | break; | |
2531 | } | |
2532 | ||
2533 | switch (a->type) { | |
2534 | case OFPACT_OUTPUT: | |
2535 | xlate_output_action(ctx, ofpact_get_OUTPUT(a)->port, | |
2536 | ofpact_get_OUTPUT(a)->max_len, true); | |
2537 | break; | |
2538 | ||
7395c052 | 2539 | case OFPACT_GROUP: |
f4fb341b SH |
2540 | if (xlate_group_action(ctx, ofpact_get_GROUP(a)->group_id)) { |
2541 | return; | |
2542 | } | |
7395c052 NZ |
2543 | break; |
2544 | ||
9583bc14 EJ |
2545 | case OFPACT_CONTROLLER: |
2546 | controller = ofpact_get_CONTROLLER(a); | |
2547 | execute_controller_action(ctx, controller->max_len, | |
2548 | controller->reason, | |
2549 | controller->controller_id); | |
2550 | break; | |
2551 | ||
2552 | case OFPACT_ENQUEUE: | |
2553 | xlate_enqueue_action(ctx, ofpact_get_ENQUEUE(a)); | |
2554 | break; | |
2555 | ||
2556 | case OFPACT_SET_VLAN_VID: | |
f74e7df7 | 2557 | wc->masks.vlan_tci |= htons(VLAN_VID_MASK | VLAN_CFI); |
ca287d20 JR |
2558 | if (flow->vlan_tci & htons(VLAN_CFI) || |
2559 | ofpact_get_SET_VLAN_VID(a)->push_vlan_if_needed) { | |
2560 | flow->vlan_tci &= ~htons(VLAN_VID_MASK); | |
2561 | flow->vlan_tci |= (htons(ofpact_get_SET_VLAN_VID(a)->vlan_vid) | |
2562 | | htons(VLAN_CFI)); | |
2563 | } | |
9583bc14 EJ |
2564 | break; |
2565 | ||
2566 | case OFPACT_SET_VLAN_PCP: | |
f74e7df7 | 2567 | wc->masks.vlan_tci |= htons(VLAN_PCP_MASK | VLAN_CFI); |
ca287d20 JR |
2568 | if (flow->vlan_tci & htons(VLAN_CFI) || |
2569 | ofpact_get_SET_VLAN_PCP(a)->push_vlan_if_needed) { | |
2570 | flow->vlan_tci &= ~htons(VLAN_PCP_MASK); | |
2571 | flow->vlan_tci |= htons((ofpact_get_SET_VLAN_PCP(a)->vlan_pcp | |
2572 | << VLAN_PCP_SHIFT) | VLAN_CFI); | |
2573 | } | |
9583bc14 EJ |
2574 | break; |
2575 | ||
2576 | case OFPACT_STRIP_VLAN: | |
f74e7df7 | 2577 | memset(&wc->masks.vlan_tci, 0xff, sizeof wc->masks.vlan_tci); |
33bf9176 | 2578 | flow->vlan_tci = htons(0); |
9583bc14 EJ |
2579 | break; |
2580 | ||
2581 | case OFPACT_PUSH_VLAN: | |
2582 | /* XXX 802.1AD(QinQ) */ | |
f74e7df7 | 2583 | memset(&wc->masks.vlan_tci, 0xff, sizeof wc->masks.vlan_tci); |
33bf9176 | 2584 | flow->vlan_tci = htons(VLAN_CFI); |
9583bc14 EJ |
2585 | break; |
2586 | ||
2587 | case OFPACT_SET_ETH_SRC: | |
f74e7df7 | 2588 | memset(&wc->masks.dl_src, 0xff, sizeof wc->masks.dl_src); |
33bf9176 | 2589 | memcpy(flow->dl_src, ofpact_get_SET_ETH_SRC(a)->mac, ETH_ADDR_LEN); |
9583bc14 EJ |
2590 | break; |
2591 | ||
2592 | case OFPACT_SET_ETH_DST: | |
f74e7df7 | 2593 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); |
33bf9176 | 2594 | memcpy(flow->dl_dst, ofpact_get_SET_ETH_DST(a)->mac, ETH_ADDR_LEN); |
9583bc14 EJ |
2595 | break; |
2596 | ||
2597 | case OFPACT_SET_IPV4_SRC: | |
33bf9176 | 2598 | if (flow->dl_type == htons(ETH_TYPE_IP)) { |
f47ea021 | 2599 | memset(&wc->masks.nw_src, 0xff, sizeof wc->masks.nw_src); |
33bf9176 | 2600 | flow->nw_src = ofpact_get_SET_IPV4_SRC(a)->ipv4; |
9583bc14 EJ |
2601 | } |
2602 | break; | |
2603 | ||
2604 | case OFPACT_SET_IPV4_DST: | |
33bf9176 | 2605 | if (flow->dl_type == htons(ETH_TYPE_IP)) { |
f47ea021 | 2606 | memset(&wc->masks.nw_dst, 0xff, sizeof wc->masks.nw_dst); |
33bf9176 | 2607 | flow->nw_dst = ofpact_get_SET_IPV4_DST(a)->ipv4; |
9583bc14 EJ |
2608 | } |
2609 | break; | |
2610 | ||
04f01c24 BP |
2611 | case OFPACT_SET_IP_DSCP: |
2612 | if (is_ip_any(flow)) { | |
f47ea021 | 2613 | wc->masks.nw_tos |= IP_DSCP_MASK; |
33bf9176 | 2614 | flow->nw_tos &= ~IP_DSCP_MASK; |
04f01c24 | 2615 | flow->nw_tos |= ofpact_get_SET_IP_DSCP(a)->dscp; |
9583bc14 EJ |
2616 | } |
2617 | break; | |
2618 | ||
ff14eb7a JR |
2619 | case OFPACT_SET_IP_ECN: |
2620 | if (is_ip_any(flow)) { | |
2621 | wc->masks.nw_tos |= IP_ECN_MASK; | |
2622 | flow->nw_tos &= ~IP_ECN_MASK; | |
2623 | flow->nw_tos |= ofpact_get_SET_IP_ECN(a)->ecn; | |
2624 | } | |
2625 | break; | |
2626 | ||
0c20dbe4 JR |
2627 | case OFPACT_SET_IP_TTL: |
2628 | if (is_ip_any(flow)) { | |
2629 | wc->masks.nw_ttl = 0xff; | |
2630 | flow->nw_ttl = ofpact_get_SET_IP_TTL(a)->ttl; | |
2631 | } | |
2632 | break; | |
2633 | ||
9583bc14 | 2634 | case OFPACT_SET_L4_SRC_PORT: |
33bf9176 | 2635 | if (is_ip_any(flow)) { |
f47ea021 JR |
2636 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); |
2637 | memset(&wc->masks.tp_src, 0xff, sizeof wc->masks.tp_src); | |
33bf9176 | 2638 | flow->tp_src = htons(ofpact_get_SET_L4_SRC_PORT(a)->port); |
9583bc14 EJ |
2639 | } |
2640 | break; | |
2641 | ||
2642 | case OFPACT_SET_L4_DST_PORT: | |
33bf9176 | 2643 | if (is_ip_any(flow)) { |
f47ea021 JR |
2644 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); |
2645 | memset(&wc->masks.tp_dst, 0xff, sizeof wc->masks.tp_dst); | |
33bf9176 | 2646 | flow->tp_dst = htons(ofpact_get_SET_L4_DST_PORT(a)->port); |
9583bc14 EJ |
2647 | } |
2648 | break; | |
2649 | ||
2650 | case OFPACT_RESUBMIT: | |
2651 | xlate_ofpact_resubmit(ctx, ofpact_get_RESUBMIT(a)); | |
2652 | break; | |
2653 | ||
2654 | case OFPACT_SET_TUNNEL: | |
33bf9176 | 2655 | flow->tunnel.tun_id = htonll(ofpact_get_SET_TUNNEL(a)->tun_id); |
9583bc14 EJ |
2656 | break; |
2657 | ||
2658 | case OFPACT_SET_QUEUE: | |
2659 | xlate_set_queue_action(ctx, ofpact_get_SET_QUEUE(a)->queue_id); | |
2660 | break; | |
2661 | ||
2662 | case OFPACT_POP_QUEUE: | |
33bf9176 | 2663 | flow->skb_priority = ctx->orig_skb_priority; |
9583bc14 EJ |
2664 | break; |
2665 | ||
2666 | case OFPACT_REG_MOVE: | |
33bf9176 | 2667 | nxm_execute_reg_move(ofpact_get_REG_MOVE(a), flow, wc); |
9583bc14 EJ |
2668 | break; |
2669 | ||
2670 | case OFPACT_REG_LOAD: | |
f47ea021 | 2671 | nxm_execute_reg_load(ofpact_get_REG_LOAD(a), flow, wc); |
9583bc14 EJ |
2672 | break; |
2673 | ||
b2dd70be JR |
2674 | case OFPACT_SET_FIELD: |
2675 | set_field = ofpact_get_SET_FIELD(a); | |
2676 | mf = set_field->field; | |
2677 | mf_mask_field_and_prereqs(mf, &wc->masks); | |
2678 | ||
2679 | /* Set field action only ever overwrites packet's outermost | |
2680 | * applicable header fields. Do nothing if no header exists. */ | |
2681 | if ((mf->id != MFF_VLAN_VID || flow->vlan_tci & htons(VLAN_CFI)) | |
2682 | && ((mf->id != MFF_MPLS_LABEL && mf->id != MFF_MPLS_TC) | |
f8b63eed | 2683 | || eth_type_mpls(flow->dl_type))) { |
b2dd70be JR |
2684 | mf_set_flow_value(mf, &set_field->value, flow); |
2685 | } | |
2686 | break; | |
2687 | ||
9583bc14 | 2688 | case OFPACT_STACK_PUSH: |
33bf9176 BP |
2689 | nxm_execute_stack_push(ofpact_get_STACK_PUSH(a), flow, wc, |
2690 | &ctx->stack); | |
9583bc14 EJ |
2691 | break; |
2692 | ||
2693 | case OFPACT_STACK_POP: | |
f74e7df7 JP |
2694 | nxm_execute_stack_pop(ofpact_get_STACK_POP(a), flow, wc, |
2695 | &ctx->stack); | |
9583bc14 EJ |
2696 | break; |
2697 | ||
2698 | case OFPACT_PUSH_MPLS: | |
8bfd0fda | 2699 | compose_mpls_push_action(ctx, ofpact_get_PUSH_MPLS(a)); |
9583bc14 EJ |
2700 | break; |
2701 | ||
2702 | case OFPACT_POP_MPLS: | |
8bfd0fda | 2703 | compose_mpls_pop_action(ctx, ofpact_get_POP_MPLS(a)->ethertype); |
9583bc14 EJ |
2704 | break; |
2705 | ||
097d4939 | 2706 | case OFPACT_SET_MPLS_LABEL: |
8bfd0fda BP |
2707 | compose_set_mpls_label_action( |
2708 | ctx, ofpact_get_SET_MPLS_LABEL(a)->label); | |
2709 | break; | |
097d4939 JR |
2710 | |
2711 | case OFPACT_SET_MPLS_TC: | |
8bfd0fda | 2712 | compose_set_mpls_tc_action(ctx, ofpact_get_SET_MPLS_TC(a)->tc); |
097d4939 JR |
2713 | break; |
2714 | ||
9583bc14 | 2715 | case OFPACT_SET_MPLS_TTL: |
8bfd0fda | 2716 | compose_set_mpls_ttl_action(ctx, ofpact_get_SET_MPLS_TTL(a)->ttl); |
9583bc14 EJ |
2717 | break; |
2718 | ||
2719 | case OFPACT_DEC_MPLS_TTL: | |
9cfef3d0 | 2720 | if (compose_dec_mpls_ttl_action(ctx)) { |
ad3efdcb | 2721 | return; |
9583bc14 EJ |
2722 | } |
2723 | break; | |
2724 | ||
2725 | case OFPACT_DEC_TTL: | |
f74e7df7 | 2726 | wc->masks.nw_ttl = 0xff; |
9583bc14 | 2727 | if (compose_dec_ttl(ctx, ofpact_get_DEC_TTL(a))) { |
ad3efdcb | 2728 | return; |
9583bc14 EJ |
2729 | } |
2730 | break; | |
2731 | ||
2732 | case OFPACT_NOTE: | |
2733 | /* Nothing to do. */ | |
2734 | break; | |
2735 | ||
2736 | case OFPACT_MULTIPATH: | |
33bf9176 | 2737 | multipath_execute(ofpact_get_MULTIPATH(a), flow, wc); |
9583bc14 EJ |
2738 | break; |
2739 | ||
2740 | case OFPACT_BUNDLE: | |
9583bc14 EJ |
2741 | xlate_bundle_action(ctx, ofpact_get_BUNDLE(a)); |
2742 | break; | |
2743 | ||
2744 | case OFPACT_OUTPUT_REG: | |
2745 | xlate_output_reg_action(ctx, ofpact_get_OUTPUT_REG(a)); | |
2746 | break; | |
2747 | ||
2748 | case OFPACT_LEARN: | |
2749 | xlate_learn_action(ctx, ofpact_get_LEARN(a)); | |
2750 | break; | |
2751 | ||
2752 | case OFPACT_EXIT: | |
2753 | ctx->exit = true; | |
2754 | break; | |
2755 | ||
2756 | case OFPACT_FIN_TIMEOUT: | |
33bf9176 | 2757 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); |
9583bc14 EJ |
2758 | ctx->xout->has_fin_timeout = true; |
2759 | xlate_fin_timeout(ctx, ofpact_get_FIN_TIMEOUT(a)); | |
2760 | break; | |
2761 | ||
2762 | case OFPACT_CLEAR_ACTIONS: | |
7fdb60a7 SH |
2763 | ofpbuf_clear(&ctx->action_set); |
2764 | break; | |
2765 | ||
2766 | case OFPACT_WRITE_ACTIONS: | |
2767 | xlate_write_actions(ctx, a); | |
9583bc14 EJ |
2768 | break; |
2769 | ||
2770 | case OFPACT_WRITE_METADATA: | |
2771 | metadata = ofpact_get_WRITE_METADATA(a); | |
33bf9176 BP |
2772 | flow->metadata &= ~metadata->mask; |
2773 | flow->metadata |= metadata->metadata & metadata->mask; | |
9583bc14 EJ |
2774 | break; |
2775 | ||
638a19b0 JR |
2776 | case OFPACT_METER: |
2777 | /* Not implemented yet. */ | |
2778 | break; | |
2779 | ||
9583bc14 | 2780 | case OFPACT_GOTO_TABLE: { |
9583bc14 | 2781 | struct ofpact_goto_table *ogt = ofpact_get_GOTO_TABLE(a); |
9583bc14 EJ |
2782 | |
2783 | ovs_assert(ctx->table_id < ogt->table_id); | |
4468099e EJ |
2784 | xlate_table_action(ctx, ctx->xin->flow.in_port.ofp_port, |
2785 | ogt->table_id, true); | |
9583bc14 EJ |
2786 | break; |
2787 | } | |
2788 | ||
2789 | case OFPACT_SAMPLE: | |
2790 | xlate_sample_action(ctx, ofpact_get_SAMPLE(a)); | |
2791 | break; | |
2792 | } | |
2793 | } | |
9583bc14 EJ |
2794 | } |
2795 | ||
2796 | void | |
2797 | xlate_in_init(struct xlate_in *xin, struct ofproto_dpif *ofproto, | |
2798 | const struct flow *flow, struct rule_dpif *rule, | |
a66733a8 | 2799 | uint16_t tcp_flags, const struct ofpbuf *packet) |
9583bc14 EJ |
2800 | { |
2801 | xin->ofproto = ofproto; | |
2802 | xin->flow = *flow; | |
2803 | xin->packet = packet; | |
2804 | xin->may_learn = packet != NULL; | |
2805 | xin->rule = rule; | |
2806 | xin->ofpacts = NULL; | |
2807 | xin->ofpacts_len = 0; | |
2808 | xin->tcp_flags = tcp_flags; | |
2809 | xin->resubmit_hook = NULL; | |
2810 | xin->report_hook = NULL; | |
2811 | xin->resubmit_stats = NULL; | |
3f207910 | 2812 | xin->skip_wildcards = false; |
9583bc14 EJ |
2813 | } |
2814 | ||
2815 | void | |
2816 | xlate_out_uninit(struct xlate_out *xout) | |
2817 | { | |
2818 | if (xout) { | |
2819 | ofpbuf_uninit(&xout->odp_actions); | |
2820 | } | |
2821 | } | |
2822 | ||
2823 | /* Translates the 'ofpacts_len' bytes of "struct ofpact"s starting at 'ofpacts' | |
2824 | * into datapath actions, using 'ctx', and discards the datapath actions. */ | |
2825 | void | |
2826 | xlate_actions_for_side_effects(struct xlate_in *xin) | |
2827 | { | |
2828 | struct xlate_out xout; | |
2829 | ||
2830 | xlate_actions(xin, &xout); | |
2831 | xlate_out_uninit(&xout); | |
2832 | } | |
2833 | ||
2834 | static void | |
2835 | xlate_report(struct xlate_ctx *ctx, const char *s) | |
2836 | { | |
2837 | if (ctx->xin->report_hook) { | |
4d0acc70 | 2838 | ctx->xin->report_hook(ctx->xin, s, ctx->recurse); |
9583bc14 EJ |
2839 | } |
2840 | } | |
2841 | ||
2842 | void | |
2843 | xlate_out_copy(struct xlate_out *dst, const struct xlate_out *src) | |
2844 | { | |
2845 | dst->wc = src->wc; | |
9583bc14 EJ |
2846 | dst->slow = src->slow; |
2847 | dst->has_learn = src->has_learn; | |
2848 | dst->has_normal = src->has_normal; | |
2849 | dst->has_fin_timeout = src->has_fin_timeout; | |
2850 | dst->nf_output_iface = src->nf_output_iface; | |
2851 | dst->mirrors = src->mirrors; | |
2852 | ||
2853 | ofpbuf_use_stub(&dst->odp_actions, dst->odp_actions_stub, | |
2854 | sizeof dst->odp_actions_stub); | |
2855 | ofpbuf_put(&dst->odp_actions, src->odp_actions.data, | |
2856 | src->odp_actions.size); | |
2857 | } | |
2858 | \f | |
55954f6e EJ |
2859 | static struct skb_priority_to_dscp * |
2860 | get_skb_priority(const struct xport *xport, uint32_t skb_priority) | |
2861 | { | |
2862 | struct skb_priority_to_dscp *pdscp; | |
2863 | uint32_t hash; | |
2864 | ||
2865 | hash = hash_int(skb_priority, 0); | |
2866 | HMAP_FOR_EACH_IN_BUCKET (pdscp, hmap_node, hash, &xport->skb_priorities) { | |
2867 | if (pdscp->skb_priority == skb_priority) { | |
2868 | return pdscp; | |
2869 | } | |
2870 | } | |
2871 | return NULL; | |
2872 | } | |
2873 | ||
2874 | static bool | |
2875 | dscp_from_skb_priority(const struct xport *xport, uint32_t skb_priority, | |
2876 | uint8_t *dscp) | |
2877 | { | |
2878 | struct skb_priority_to_dscp *pdscp = get_skb_priority(xport, skb_priority); | |
2879 | *dscp = pdscp ? pdscp->dscp : 0; | |
2880 | return pdscp != NULL; | |
2881 | } | |
2882 | ||
2883 | static void | |
2884 | clear_skb_priorities(struct xport *xport) | |
2885 | { | |
2886 | struct skb_priority_to_dscp *pdscp, *next; | |
2887 | ||
2888 | HMAP_FOR_EACH_SAFE (pdscp, next, hmap_node, &xport->skb_priorities) { | |
2889 | hmap_remove(&xport->skb_priorities, &pdscp->hmap_node); | |
2890 | free(pdscp); | |
2891 | } | |
2892 | } | |
2893 | ||
ce4a6b76 BP |
2894 | static bool |
2895 | actions_output_to_local_port(const struct xlate_ctx *ctx) | |
2896 | { | |
46c88433 | 2897 | odp_port_t local_odp_port = ofp_port_to_odp_port(ctx->xbridge, OFPP_LOCAL); |
ce4a6b76 BP |
2898 | const struct nlattr *a; |
2899 | unsigned int left; | |
2900 | ||
2901 | NL_ATTR_FOR_EACH_UNSAFE (a, left, ctx->xout->odp_actions.data, | |
2902 | ctx->xout->odp_actions.size) { | |
2903 | if (nl_attr_type(a) == OVS_ACTION_ATTR_OUTPUT | |
2904 | && nl_attr_get_odp_port(a) == local_odp_port) { | |
2905 | return true; | |
2906 | } | |
2907 | } | |
2908 | return false; | |
2909 | } | |
9583bc14 | 2910 | |
91d6cd12 AW |
2911 | /* Thread safe call to xlate_actions__(). */ |
2912 | void | |
2913 | xlate_actions(struct xlate_in *xin, struct xlate_out *xout) | |
6a4d3ab5 | 2914 | OVS_EXCLUDED(xlate_rwlock) |
91d6cd12 AW |
2915 | { |
2916 | ovs_rwlock_rdlock(&xlate_rwlock); | |
2917 | xlate_actions__(xin, xout); | |
2918 | ovs_rwlock_unlock(&xlate_rwlock); | |
2919 | } | |
2920 | ||
9583bc14 | 2921 | /* Translates the 'ofpacts_len' bytes of "struct ofpacts" starting at 'ofpacts' |
56450a41 BP |
2922 | * into datapath actions in 'odp_actions', using 'ctx'. |
2923 | * | |
2924 | * The caller must take responsibility for eventually freeing 'xout', with | |
2925 | * xlate_out_uninit(). */ | |
91d6cd12 AW |
2926 | static void |
2927 | xlate_actions__(struct xlate_in *xin, struct xlate_out *xout) | |
2928 | OVS_REQ_RDLOCK(xlate_rwlock) | |
9583bc14 | 2929 | { |
33bf9176 BP |
2930 | struct flow_wildcards *wc = &xout->wc; |
2931 | struct flow *flow = &xin->flow; | |
10c44245 | 2932 | struct rule_dpif *rule = NULL; |
33bf9176 | 2933 | |
6f00e29b | 2934 | struct rule_actions *actions = NULL; |
9583bc14 EJ |
2935 | enum slow_path_reason special; |
2936 | const struct ofpact *ofpacts; | |
46c88433 | 2937 | struct xport *in_port; |
9583bc14 EJ |
2938 | struct flow orig_flow; |
2939 | struct xlate_ctx ctx; | |
2940 | size_t ofpacts_len; | |
62a7cc71 | 2941 | bool tnl_may_send; |
c56fac1b | 2942 | bool is_icmp; |
9583bc14 | 2943 | |
46c88433 | 2944 | COVERAGE_INC(xlate_actions); |
9583bc14 EJ |
2945 | |
2946 | /* Flow initialization rules: | |
2947 | * - 'base_flow' must match the kernel's view of the packet at the | |
2948 | * time that action processing starts. 'flow' represents any | |
2949 | * transformations we wish to make through actions. | |
2950 | * - By default 'base_flow' and 'flow' are the same since the input | |
2951 | * packet matches the output before any actions are applied. | |
2952 | * - When using VLAN splinters, 'base_flow''s VLAN is set to the value | |
2953 | * of the received packet as seen by the kernel. If we later output | |
2954 | * to another device without any modifications this will cause us to | |
2955 | * insert a new tag since the original one was stripped off by the | |
2956 | * VLAN device. | |
2957 | * - Tunnel metadata as received is retained in 'flow'. This allows | |
2958 | * tunnel metadata matching also in later tables. | |
2959 | * Since a kernel action for setting the tunnel metadata will only be | |
2960 | * generated with actual tunnel output, changing the tunnel metadata | |
2961 | * values in 'flow' (such as tun_id) will only have effect with a later | |
2962 | * tunnel output action. | |
2963 | * - Tunnel 'base_flow' is completely cleared since that is what the | |
2964 | * kernel does. If we wish to maintain the original values an action | |
2965 | * needs to be generated. */ | |
2966 | ||
2967 | ctx.xin = xin; | |
2968 | ctx.xout = xout; | |
46c88433 EJ |
2969 | ctx.xout->slow = 0; |
2970 | ctx.xout->has_learn = false; | |
2971 | ctx.xout->has_normal = false; | |
2972 | ctx.xout->has_fin_timeout = false; | |
2973 | ctx.xout->nf_output_iface = NF_OUT_DROP; | |
2974 | ctx.xout->mirrors = 0; | |
2975 | ofpbuf_use_stub(&ctx.xout->odp_actions, ctx.xout->odp_actions_stub, | |
2976 | sizeof ctx.xout->odp_actions_stub); | |
2977 | ofpbuf_reserve(&ctx.xout->odp_actions, NL_A_U32_SIZE); | |
2978 | ||
2979 | ctx.xbridge = xbridge_lookup(xin->ofproto); | |
2980 | if (!ctx.xbridge) { | |
dc24a00f | 2981 | goto out; |
46c88433 | 2982 | } |
9583bc14 | 2983 | |
9583bc14 EJ |
2984 | ctx.rule = xin->rule; |
2985 | ||
33bf9176 | 2986 | ctx.base_flow = *flow; |
9583bc14 | 2987 | memset(&ctx.base_flow.tunnel, 0, sizeof ctx.base_flow.tunnel); |
33bf9176 | 2988 | ctx.orig_tunnel_ip_dst = flow->tunnel.ip_dst; |
9583bc14 | 2989 | |
33bf9176 BP |
2990 | flow_wildcards_init_catchall(wc); |
2991 | memset(&wc->masks.in_port, 0xff, sizeof wc->masks.in_port); | |
1dd35f8a | 2992 | memset(&wc->masks.skb_priority, 0xff, sizeof wc->masks.skb_priority); |
7431e171 | 2993 | memset(&wc->masks.dl_type, 0xff, sizeof wc->masks.dl_type); |
0934ebba BP |
2994 | if (is_ip_any(flow)) { |
2995 | wc->masks.nw_frag |= FLOW_NW_FRAG_MASK; | |
2996 | } | |
c56fac1b | 2997 | is_icmp = is_icmpv4(flow) || is_icmpv6(flow); |
9583bc14 | 2998 | |
62a7cc71 | 2999 | tnl_may_send = tnl_xlate_init(&ctx.base_flow, flow, wc); |
ce3955be | 3000 | if (ctx.xbridge->netflow) { |
9b658910 | 3001 | netflow_mask_wc(flow, wc); |
9583bc14 EJ |
3002 | } |
3003 | ||
9583bc14 | 3004 | ctx.recurse = 0; |
98b07853 | 3005 | ctx.resubmits = 0; |
5a070238 | 3006 | ctx.in_group = false; |
33bf9176 | 3007 | ctx.orig_skb_priority = flow->skb_priority; |
9583bc14 EJ |
3008 | ctx.table_id = 0; |
3009 | ctx.exit = false; | |
3010 | ||
10c44245 | 3011 | if (!xin->ofpacts && !ctx.rule) { |
3f207910 EJ |
3012 | rule_dpif_lookup(ctx.xbridge->ofproto, flow, |
3013 | !xin->skip_wildcards ? wc : NULL, &rule); | |
10c44245 EJ |
3014 | if (ctx.xin->resubmit_stats) { |
3015 | rule_dpif_credit_stats(rule, ctx.xin->resubmit_stats); | |
3016 | } | |
3017 | ctx.rule = rule; | |
3018 | } | |
ee1afdd5 | 3019 | xout->fail_open = ctx.rule && rule_dpif_is_fail_open(ctx.rule); |
10c44245 | 3020 | |
9583bc14 EJ |
3021 | if (xin->ofpacts) { |
3022 | ofpacts = xin->ofpacts; | |
3023 | ofpacts_len = xin->ofpacts_len; | |
10c44245 EJ |
3024 | } else if (ctx.rule) { |
3025 | actions = rule_dpif_get_actions(ctx.rule); | |
6f00e29b BP |
3026 | ofpacts = actions->ofpacts; |
3027 | ofpacts_len = actions->ofpacts_len; | |
9583bc14 | 3028 | } else { |
428b2edd | 3029 | OVS_NOT_REACHED(); |
9583bc14 EJ |
3030 | } |
3031 | ||
3032 | ofpbuf_use_stub(&ctx.stack, ctx.init_stack, sizeof ctx.init_stack); | |
7fdb60a7 SH |
3033 | ofpbuf_use_stub(&ctx.action_set, |
3034 | ctx.action_set_stub, sizeof ctx.action_set_stub); | |
9583bc14 | 3035 | |
ade6ad9c | 3036 | if (mbridge_has_mirrors(ctx.xbridge->mbridge)) { |
9583bc14 EJ |
3037 | /* Do this conditionally because the copy is expensive enough that it |
3038 | * shows up in profiles. */ | |
33bf9176 | 3039 | orig_flow = *flow; |
9583bc14 EJ |
3040 | } |
3041 | ||
33bf9176 | 3042 | if (flow->nw_frag & FLOW_NW_FRAG_ANY) { |
46c88433 | 3043 | switch (ctx.xbridge->frag) { |
9583bc14 EJ |
3044 | case OFPC_FRAG_NORMAL: |
3045 | /* We must pretend that transport ports are unavailable. */ | |
33bf9176 BP |
3046 | flow->tp_src = ctx.base_flow.tp_src = htons(0); |
3047 | flow->tp_dst = ctx.base_flow.tp_dst = htons(0); | |
9583bc14 EJ |
3048 | break; |
3049 | ||
3050 | case OFPC_FRAG_DROP: | |
dc24a00f | 3051 | goto out; |
9583bc14 EJ |
3052 | |
3053 | case OFPC_FRAG_REASM: | |
428b2edd | 3054 | OVS_NOT_REACHED(); |
9583bc14 EJ |
3055 | |
3056 | case OFPC_FRAG_NX_MATCH: | |
3057 | /* Nothing to do. */ | |
3058 | break; | |
3059 | ||
3060 | case OFPC_INVALID_TTL_TO_CONTROLLER: | |
428b2edd | 3061 | OVS_NOT_REACHED(); |
9583bc14 EJ |
3062 | } |
3063 | } | |
3064 | ||
46c88433 | 3065 | in_port = get_ofp_port(ctx.xbridge, flow->in_port.ofp_port); |
d6fc5f57 EJ |
3066 | if (in_port && in_port->is_tunnel && ctx.xin->resubmit_stats) { |
3067 | netdev_vport_inc_rx(in_port->netdev, ctx.xin->resubmit_stats); | |
3068 | if (in_port->bfd) { | |
3069 | bfd_account_rx(in_port->bfd, ctx.xin->resubmit_stats); | |
3070 | } | |
3071 | } | |
3072 | ||
642dc74d | 3073 | special = process_special(&ctx, flow, in_port, ctx.xin->packet); |
9583bc14 | 3074 | if (special) { |
04594cd5 | 3075 | ctx.xout->slow |= special; |
9583bc14 | 3076 | } else { |
9583bc14 | 3077 | size_t sample_actions_len; |
9583bc14 | 3078 | |
4e022ec0 | 3079 | if (flow->in_port.ofp_port |
46c88433 EJ |
3080 | != vsp_realdev_to_vlandev(ctx.xbridge->ofproto, |
3081 | flow->in_port.ofp_port, | |
33bf9176 | 3082 | flow->vlan_tci)) { |
9583bc14 EJ |
3083 | ctx.base_flow.vlan_tci = 0; |
3084 | } | |
3085 | ||
3086 | add_sflow_action(&ctx); | |
3087 | add_ipfix_action(&ctx); | |
3088 | sample_actions_len = ctx.xout->odp_actions.size; | |
3089 | ||
62a7cc71 | 3090 | if (tnl_may_send && (!in_port || may_receive(in_port, &ctx))) { |
9583bc14 EJ |
3091 | do_xlate_actions(ofpacts, ofpacts_len, &ctx); |
3092 | ||
3093 | /* We've let OFPP_NORMAL and the learning action look at the | |
3094 | * packet, so drop it now if forwarding is disabled. */ | |
9d189a50 | 3095 | if (in_port && !xport_stp_forward_state(in_port)) { |
9583bc14 EJ |
3096 | ctx.xout->odp_actions.size = sample_actions_len; |
3097 | } | |
3098 | } | |
3099 | ||
7fdb60a7 SH |
3100 | if (ctx.action_set.size) { |
3101 | xlate_action_set(&ctx); | |
3102 | } | |
3103 | ||
46c88433 | 3104 | if (ctx.xbridge->has_in_band |
ce4a6b76 BP |
3105 | && in_band_must_output_to_local_port(flow) |
3106 | && !actions_output_to_local_port(&ctx)) { | |
9583bc14 EJ |
3107 | compose_output_action(&ctx, OFPP_LOCAL); |
3108 | } | |
aaa0fbae EJ |
3109 | |
3110 | fix_sflow_action(&ctx); | |
3111 | ||
46c88433 | 3112 | if (mbridge_has_mirrors(ctx.xbridge->mbridge)) { |
9583bc14 EJ |
3113 | add_mirror_actions(&ctx, &orig_flow); |
3114 | } | |
9583bc14 EJ |
3115 | } |
3116 | ||
542024c4 BP |
3117 | if (nl_attr_oversized(ctx.xout->odp_actions.size)) { |
3118 | /* These datapath actions are too big for a Netlink attribute, so we | |
0f032e95 BP |
3119 | * can't hand them to the kernel directly. dpif_execute() can execute |
3120 | * them one by one with help, so just mark the result as SLOW_ACTION to | |
3121 | * prevent the flow from being installed. */ | |
3122 | COVERAGE_INC(xlate_actions_oversize); | |
3123 | ctx.xout->slow |= SLOW_ACTION; | |
542024c4 BP |
3124 | } |
3125 | ||
d6fc5f57 EJ |
3126 | if (ctx.xin->resubmit_stats) { |
3127 | mirror_update_stats(ctx.xbridge->mbridge, xout->mirrors, | |
3128 | ctx.xin->resubmit_stats->n_packets, | |
3129 | ctx.xin->resubmit_stats->n_bytes); | |
3130 | ||
3131 | if (ctx.xbridge->netflow) { | |
3132 | const struct ofpact *ofpacts; | |
3133 | size_t ofpacts_len; | |
3134 | ||
3135 | ofpacts_len = actions->ofpacts_len; | |
3136 | ofpacts = actions->ofpacts; | |
3137 | if (ofpacts_len == 0 | |
3138 | || ofpacts->type != OFPACT_CONTROLLER | |
3139 | || ofpact_next(ofpacts) < ofpact_end(ofpacts, ofpacts_len)) { | |
3140 | /* Only update netflow if we don't have controller flow. We don't | |
3141 | * report NetFlow expiration messages for such facets because they | |
3142 | * are just part of the control logic for the network, not real | |
3143 | * traffic. */ | |
3144 | netflow_flow_update(ctx.xbridge->netflow, flow, | |
3145 | xout->nf_output_iface, | |
3146 | ctx.xin->resubmit_stats); | |
3147 | } | |
3148 | } | |
3149 | } | |
3150 | ||
9583bc14 | 3151 | ofpbuf_uninit(&ctx.stack); |
7fdb60a7 | 3152 | ofpbuf_uninit(&ctx.action_set); |
9583bc14 EJ |
3153 | |
3154 | /* Clear the metadata and register wildcard masks, because we won't | |
3155 | * use non-header fields as part of the cache. */ | |
c11c6faa | 3156 | flow_wildcards_clear_non_packet_fields(wc); |
dc24a00f | 3157 | |
c56fac1b BP |
3158 | /* ICMPv4 and ICMPv6 have 8-bit "type" and "code" fields. struct flow uses |
3159 | * the low 8 bits of the 16-bit tp_src and tp_dst members to represent | |
3160 | * these fields. The datapath interface, on the other hand, represents | |
3161 | * them with just 8 bits each. This means that if the high 8 bits of the | |
3162 | * masks for these fields somehow become set, then they will get chopped | |
3163 | * off by a round trip through the datapath, and revalidation will spot | |
3164 | * that as an inconsistency and delete the flow. Avoid the problem here by | |
3165 | * making sure that only the low 8 bits of either field can be unwildcarded | |
3166 | * for ICMP. | |
3167 | */ | |
3168 | if (is_icmp) { | |
3169 | wc->masks.tp_src &= htons(UINT8_MAX); | |
3170 | wc->masks.tp_dst &= htons(UINT8_MAX); | |
3171 | } | |
3172 | ||
dc24a00f | 3173 | out: |
91d6cd12 | 3174 | rule_actions_unref(actions); |
10c44245 | 3175 | rule_dpif_unref(rule); |
91d6cd12 AW |
3176 | } |
3177 | ||
3178 | /* Sends 'packet' out 'ofport'. | |
3179 | * May modify 'packet'. | |
3180 | * Returns 0 if successful, otherwise a positive errno value. */ | |
3181 | int | |
3182 | xlate_send_packet(const struct ofport_dpif *ofport, struct ofpbuf *packet) | |
3183 | { | |
91d6cd12 | 3184 | struct xport *xport; |
91d6cd12 | 3185 | struct ofpact_output output; |
91d6cd12 AW |
3186 | struct flow flow; |
3187 | union flow_in_port in_port_; | |
91d6cd12 | 3188 | |
91d6cd12 AW |
3189 | ofpact_init(&output.ofpact, OFPACT_OUTPUT, sizeof output); |
3190 | /* Use OFPP_NONE as the in_port to avoid special packet processing. */ | |
3191 | in_port_.ofp_port = OFPP_NONE; | |
3192 | flow_extract(packet, 0, 0, NULL, &in_port_, &flow); | |
3193 | ||
3194 | ovs_rwlock_rdlock(&xlate_rwlock); | |
3195 | xport = xport_lookup(ofport); | |
3196 | if (!xport) { | |
91d6cd12 | 3197 | ovs_rwlock_unlock(&xlate_rwlock); |
02ea2703 | 3198 | return EINVAL; |
91d6cd12 | 3199 | } |
91d6cd12 AW |
3200 | output.port = xport->ofp_port; |
3201 | output.max_len = 0; | |
dc24a00f | 3202 | ovs_rwlock_unlock(&xlate_rwlock); |
e491a67a YT |
3203 | |
3204 | return ofproto_dpif_execute_actions(xport->xbridge->ofproto, &flow, NULL, | |
3205 | &output.ofpact, sizeof output, | |
3206 | packet); | |
9583bc14 | 3207 | } |