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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 | |
adcf00ba AZ |
61 | #define MAX_INTERNAL_RESUBMITS 1 /* Max resbmits allowed using rules in |
62 | internal table. */ | |
8a553e9a | 63 | |
98b07853 BP |
64 | /* Maximum number of resubmit actions in a flow translation, whether they are |
65 | * recursive or not. */ | |
66 | #define MAX_RESUBMITS (MAX_RESUBMIT_RECURSION * MAX_RESUBMIT_RECURSION) | |
67 | ||
dc24a00f EJ |
68 | struct ovs_rwlock xlate_rwlock = OVS_RWLOCK_INITIALIZER; |
69 | ||
46c88433 EJ |
70 | struct xbridge { |
71 | struct hmap_node hmap_node; /* Node in global 'xbridges' map. */ | |
72 | struct ofproto_dpif *ofproto; /* Key in global 'xbridges' map. */ | |
73 | ||
74 | struct list xbundles; /* Owned xbundles. */ | |
75 | struct hmap xports; /* Indexed by ofp_port. */ | |
76 | ||
77 | char *name; /* Name used in log messages. */ | |
89a8a7f0 | 78 | struct dpif *dpif; /* Datapath interface. */ |
46c88433 EJ |
79 | struct mac_learning *ml; /* Mac learning handle. */ |
80 | struct mbridge *mbridge; /* Mirroring. */ | |
81 | struct dpif_sflow *sflow; /* SFlow handle, or null. */ | |
82 | struct dpif_ipfix *ipfix; /* Ipfix handle, or null. */ | |
ce3955be | 83 | struct netflow *netflow; /* Netflow handle, or null. */ |
9d189a50 | 84 | struct stp *stp; /* STP or null if disabled. */ |
46c88433 | 85 | |
ec89fc6f EJ |
86 | /* Special rules installed by ofproto-dpif. */ |
87 | struct rule_dpif *miss_rule; | |
88 | struct rule_dpif *no_packet_in_rule; | |
89 | ||
46c88433 | 90 | enum ofp_config_flags frag; /* Fragmentation handling. */ |
46c88433 EJ |
91 | bool has_in_band; /* Bridge has in band control? */ |
92 | bool forward_bpdu; /* Bridge forwards STP BPDUs? */ | |
4b97b70d | 93 | |
adcf00ba AZ |
94 | /* True if the datapath supports recirculation. */ |
95 | bool enable_recirc; | |
96 | ||
4b97b70d BP |
97 | /* True if the datapath supports variable-length |
98 | * OVS_USERSPACE_ATTR_USERDATA in OVS_ACTION_ATTR_USERSPACE actions. | |
99 | * False if the datapath supports only 8-byte (or shorter) userdata. */ | |
100 | bool variable_length_userdata; | |
8bfd0fda BP |
101 | |
102 | /* Number of MPLS label stack entries that the datapath supports | |
103 | * in matches. */ | |
104 | size_t max_mpls_depth; | |
46c88433 EJ |
105 | }; |
106 | ||
107 | struct xbundle { | |
108 | struct hmap_node hmap_node; /* In global 'xbundles' map. */ | |
109 | struct ofbundle *ofbundle; /* Key in global 'xbundles' map. */ | |
110 | ||
111 | struct list list_node; /* In parent 'xbridges' list. */ | |
112 | struct xbridge *xbridge; /* Parent xbridge. */ | |
113 | ||
114 | struct list xports; /* Contains "struct xport"s. */ | |
115 | ||
116 | char *name; /* Name used in log messages. */ | |
117 | struct bond *bond; /* Nonnull iff more than one port. */ | |
118 | struct lacp *lacp; /* LACP handle or null. */ | |
119 | ||
120 | enum port_vlan_mode vlan_mode; /* VLAN mode. */ | |
121 | int vlan; /* -1=trunk port, else a 12-bit VLAN ID. */ | |
122 | unsigned long *trunks; /* Bitmap of trunked VLANs, if 'vlan' == -1. | |
123 | * NULL if all VLANs are trunked. */ | |
124 | bool use_priority_tags; /* Use 802.1p tag for frames in VLAN 0? */ | |
125 | bool floodable; /* No port has OFPUTIL_PC_NO_FLOOD set? */ | |
126 | }; | |
127 | ||
128 | struct xport { | |
129 | struct hmap_node hmap_node; /* Node in global 'xports' map. */ | |
130 | struct ofport_dpif *ofport; /* Key in global 'xports map. */ | |
131 | ||
132 | struct hmap_node ofp_node; /* Node in parent xbridge 'xports' map. */ | |
133 | ofp_port_t ofp_port; /* Key in parent xbridge 'xports' map. */ | |
134 | ||
135 | odp_port_t odp_port; /* Datapath port number or ODPP_NONE. */ | |
136 | ||
137 | struct list bundle_node; /* In parent xbundle (if it exists). */ | |
138 | struct xbundle *xbundle; /* Parent xbundle or null. */ | |
139 | ||
140 | struct netdev *netdev; /* 'ofport''s netdev. */ | |
141 | ||
142 | struct xbridge *xbridge; /* Parent bridge. */ | |
143 | struct xport *peer; /* Patch port peer or null. */ | |
144 | ||
145 | enum ofputil_port_config config; /* OpenFlow port configuration. */ | |
dd8cd4b4 | 146 | enum ofputil_port_state state; /* OpenFlow port state. */ |
92cf817b | 147 | int stp_port_no; /* STP port number or -1 if not in use. */ |
46c88433 | 148 | |
55954f6e EJ |
149 | struct hmap skb_priorities; /* Map of 'skb_priority_to_dscp's. */ |
150 | ||
46c88433 EJ |
151 | bool may_enable; /* May be enabled in bonds. */ |
152 | bool is_tunnel; /* Is a tunnel port. */ | |
153 | ||
154 | struct cfm *cfm; /* CFM handle or null. */ | |
155 | struct bfd *bfd; /* BFD handle or null. */ | |
156 | }; | |
157 | ||
4d0acc70 EJ |
158 | struct xlate_ctx { |
159 | struct xlate_in *xin; | |
160 | struct xlate_out *xout; | |
161 | ||
46c88433 | 162 | const struct xbridge *xbridge; |
4d0acc70 EJ |
163 | |
164 | /* Flow at the last commit. */ | |
165 | struct flow base_flow; | |
166 | ||
167 | /* Tunnel IP destination address as received. This is stored separately | |
168 | * as the base_flow.tunnel is cleared on init to reflect the datapath | |
169 | * behavior. Used to make sure not to send tunneled output to ourselves, | |
170 | * which might lead to an infinite loop. This could happen easily | |
171 | * if a tunnel is marked as 'ip_remote=flow', and the flow does not | |
172 | * actually set the tun_dst field. */ | |
173 | ovs_be32 orig_tunnel_ip_dst; | |
174 | ||
175 | /* Stack for the push and pop actions. Each stack element is of type | |
176 | * "union mf_subvalue". */ | |
177 | union mf_subvalue init_stack[1024 / sizeof(union mf_subvalue)]; | |
178 | struct ofpbuf stack; | |
179 | ||
180 | /* The rule that we are currently translating, or NULL. */ | |
181 | struct rule_dpif *rule; | |
182 | ||
98b07853 BP |
183 | /* Resubmit statistics, via xlate_table_action(). */ |
184 | int recurse; /* Current resubmit nesting depth. */ | |
185 | int resubmits; /* Total number of resubmits. */ | |
5a070238 | 186 | bool in_group; /* Currently translating ofgroup, if true. */ |
98b07853 | 187 | |
4d0acc70 EJ |
188 | uint32_t orig_skb_priority; /* Priority when packet arrived. */ |
189 | uint8_t table_id; /* OpenFlow table ID where flow was found. */ | |
190 | uint32_t sflow_n_outputs; /* Number of output ports. */ | |
4e022ec0 | 191 | odp_port_t sflow_odp_port; /* Output port for composing sFlow action. */ |
4d0acc70 EJ |
192 | uint16_t user_cookie_offset;/* Used for user_action_cookie fixup. */ |
193 | bool exit; /* No further actions should be processed. */ | |
7fdb60a7 SH |
194 | |
195 | /* OpenFlow 1.1+ action set. | |
196 | * | |
197 | * 'action_set' accumulates "struct ofpact"s added by OFPACT_WRITE_ACTIONS. | |
198 | * When translation is otherwise complete, ofpacts_execute_action_set() | |
199 | * converts it to a set of "struct ofpact"s that can be translated into | |
200 | * datapath actions. */ | |
201 | struct ofpbuf action_set; /* Action set. */ | |
202 | uint64_t action_set_stub[1024 / 8]; | |
4d0acc70 EJ |
203 | }; |
204 | ||
9583bc14 EJ |
205 | /* A controller may use OFPP_NONE as the ingress port to indicate that |
206 | * it did not arrive on a "real" port. 'ofpp_none_bundle' exists for | |
207 | * when an input bundle is needed for validation (e.g., mirroring or | |
208 | * OFPP_NORMAL processing). It is not connected to an 'ofproto' or have | |
3548d242 BP |
209 | * any 'port' structs, so care must be taken when dealing with it. */ |
210 | static struct xbundle ofpp_none_bundle = { | |
211 | .name = "OFPP_NONE", | |
212 | .vlan_mode = PORT_VLAN_TRUNK | |
213 | }; | |
9583bc14 | 214 | |
55954f6e EJ |
215 | /* Node in 'xport''s 'skb_priorities' map. Used to maintain a map from |
216 | * 'priority' (the datapath's term for QoS queue) to the dscp bits which all | |
217 | * traffic egressing the 'ofport' with that priority should be marked with. */ | |
218 | struct skb_priority_to_dscp { | |
219 | struct hmap_node hmap_node; /* Node in 'ofport_dpif''s 'skb_priorities'. */ | |
220 | uint32_t skb_priority; /* Priority of this queue (see struct flow). */ | |
221 | ||
222 | uint8_t dscp; /* DSCP bits to mark outgoing traffic with. */ | |
223 | }; | |
224 | ||
46c88433 EJ |
225 | static struct hmap xbridges = HMAP_INITIALIZER(&xbridges); |
226 | static struct hmap xbundles = HMAP_INITIALIZER(&xbundles); | |
227 | static struct hmap xports = HMAP_INITIALIZER(&xports); | |
228 | ||
229 | static bool may_receive(const struct xport *, struct xlate_ctx *); | |
9583bc14 EJ |
230 | static void do_xlate_actions(const struct ofpact *, size_t ofpacts_len, |
231 | struct xlate_ctx *); | |
91d6cd12 AW |
232 | static void xlate_actions__(struct xlate_in *, struct xlate_out *) |
233 | OVS_REQ_RDLOCK(xlate_rwlock); | |
adcf00ba AZ |
234 | static void xlate_normal(struct xlate_ctx *); |
235 | static void xlate_report(struct xlate_ctx *, const char *); | |
6d328fa2 SH |
236 | static void xlate_table_action(struct xlate_ctx *, ofp_port_t in_port, |
237 | uint8_t table_id, bool may_packet_in, | |
238 | bool honor_table_miss); | |
46c88433 EJ |
239 | static bool input_vid_is_valid(uint16_t vid, struct xbundle *, bool warn); |
240 | static uint16_t input_vid_to_vlan(const struct xbundle *, uint16_t vid); | |
241 | static void output_normal(struct xlate_ctx *, const struct xbundle *, | |
9583bc14 | 242 | uint16_t vlan); |
4e022ec0 | 243 | static void compose_output_action(struct xlate_ctx *, ofp_port_t ofp_port); |
9583bc14 | 244 | |
46c88433 EJ |
245 | static struct xbridge *xbridge_lookup(const struct ofproto_dpif *); |
246 | static struct xbundle *xbundle_lookup(const struct ofbundle *); | |
5e6af486 | 247 | static struct xport *xport_lookup(const struct ofport_dpif *); |
46c88433 | 248 | static struct xport *get_ofp_port(const struct xbridge *, ofp_port_t ofp_port); |
55954f6e EJ |
249 | static struct skb_priority_to_dscp *get_skb_priority(const struct xport *, |
250 | uint32_t skb_priority); | |
251 | static void clear_skb_priorities(struct xport *); | |
252 | static bool dscp_from_skb_priority(const struct xport *, uint32_t skb_priority, | |
253 | uint8_t *dscp); | |
46c88433 EJ |
254 | |
255 | void | |
256 | xlate_ofproto_set(struct ofproto_dpif *ofproto, const char *name, | |
ec89fc6f EJ |
257 | struct dpif *dpif, struct rule_dpif *miss_rule, |
258 | struct rule_dpif *no_packet_in_rule, | |
259 | const struct mac_learning *ml, struct stp *stp, | |
260 | const struct mbridge *mbridge, | |
46c88433 | 261 | const struct dpif_sflow *sflow, |
ce3955be EJ |
262 | const struct dpif_ipfix *ipfix, |
263 | const struct netflow *netflow, enum ofp_config_flags frag, | |
4b97b70d | 264 | bool forward_bpdu, bool has_in_band, |
adcf00ba | 265 | bool enable_recirc, |
8bfd0fda BP |
266 | bool variable_length_userdata, |
267 | size_t max_mpls_depth) | |
46c88433 EJ |
268 | { |
269 | struct xbridge *xbridge = xbridge_lookup(ofproto); | |
270 | ||
271 | if (!xbridge) { | |
272 | xbridge = xzalloc(sizeof *xbridge); | |
273 | xbridge->ofproto = ofproto; | |
274 | ||
275 | hmap_insert(&xbridges, &xbridge->hmap_node, hash_pointer(ofproto, 0)); | |
276 | hmap_init(&xbridge->xports); | |
277 | list_init(&xbridge->xbundles); | |
278 | } | |
279 | ||
280 | if (xbridge->ml != ml) { | |
281 | mac_learning_unref(xbridge->ml); | |
282 | xbridge->ml = mac_learning_ref(ml); | |
283 | } | |
284 | ||
285 | if (xbridge->mbridge != mbridge) { | |
286 | mbridge_unref(xbridge->mbridge); | |
287 | xbridge->mbridge = mbridge_ref(mbridge); | |
288 | } | |
289 | ||
290 | if (xbridge->sflow != sflow) { | |
291 | dpif_sflow_unref(xbridge->sflow); | |
292 | xbridge->sflow = dpif_sflow_ref(sflow); | |
293 | } | |
294 | ||
295 | if (xbridge->ipfix != ipfix) { | |
296 | dpif_ipfix_unref(xbridge->ipfix); | |
297 | xbridge->ipfix = dpif_ipfix_ref(ipfix); | |
298 | } | |
299 | ||
9d189a50 EJ |
300 | if (xbridge->stp != stp) { |
301 | stp_unref(xbridge->stp); | |
302 | xbridge->stp = stp_ref(stp); | |
303 | } | |
304 | ||
ce3955be EJ |
305 | if (xbridge->netflow != netflow) { |
306 | netflow_unref(xbridge->netflow); | |
307 | xbridge->netflow = netflow_ref(netflow); | |
308 | } | |
309 | ||
46c88433 EJ |
310 | free(xbridge->name); |
311 | xbridge->name = xstrdup(name); | |
312 | ||
89a8a7f0 | 313 | xbridge->dpif = dpif; |
46c88433 EJ |
314 | xbridge->forward_bpdu = forward_bpdu; |
315 | xbridge->has_in_band = has_in_band; | |
46c88433 | 316 | xbridge->frag = frag; |
ec89fc6f EJ |
317 | xbridge->miss_rule = miss_rule; |
318 | xbridge->no_packet_in_rule = no_packet_in_rule; | |
adcf00ba | 319 | xbridge->enable_recirc = enable_recirc; |
4b97b70d | 320 | xbridge->variable_length_userdata = variable_length_userdata; |
8bfd0fda | 321 | xbridge->max_mpls_depth = max_mpls_depth; |
46c88433 EJ |
322 | } |
323 | ||
324 | void | |
325 | xlate_remove_ofproto(struct ofproto_dpif *ofproto) | |
326 | { | |
327 | struct xbridge *xbridge = xbridge_lookup(ofproto); | |
328 | struct xbundle *xbundle, *next_xbundle; | |
329 | struct xport *xport, *next_xport; | |
330 | ||
331 | if (!xbridge) { | |
332 | return; | |
333 | } | |
334 | ||
335 | HMAP_FOR_EACH_SAFE (xport, next_xport, ofp_node, &xbridge->xports) { | |
336 | xlate_ofport_remove(xport->ofport); | |
337 | } | |
338 | ||
339 | LIST_FOR_EACH_SAFE (xbundle, next_xbundle, list_node, &xbridge->xbundles) { | |
340 | xlate_bundle_remove(xbundle->ofbundle); | |
341 | } | |
342 | ||
343 | hmap_remove(&xbridges, &xbridge->hmap_node); | |
795cc5c1 EJ |
344 | mac_learning_unref(xbridge->ml); |
345 | mbridge_unref(xbridge->mbridge); | |
346 | dpif_sflow_unref(xbridge->sflow); | |
347 | dpif_ipfix_unref(xbridge->ipfix); | |
348 | stp_unref(xbridge->stp); | |
349 | hmap_destroy(&xbridge->xports); | |
46c88433 EJ |
350 | free(xbridge->name); |
351 | free(xbridge); | |
352 | } | |
353 | ||
354 | void | |
355 | xlate_bundle_set(struct ofproto_dpif *ofproto, struct ofbundle *ofbundle, | |
356 | const char *name, enum port_vlan_mode vlan_mode, int vlan, | |
357 | unsigned long *trunks, bool use_priority_tags, | |
358 | const struct bond *bond, const struct lacp *lacp, | |
359 | bool floodable) | |
360 | { | |
361 | struct xbundle *xbundle = xbundle_lookup(ofbundle); | |
362 | ||
363 | if (!xbundle) { | |
364 | xbundle = xzalloc(sizeof *xbundle); | |
365 | xbundle->ofbundle = ofbundle; | |
366 | xbundle->xbridge = xbridge_lookup(ofproto); | |
367 | ||
368 | hmap_insert(&xbundles, &xbundle->hmap_node, hash_pointer(ofbundle, 0)); | |
369 | list_insert(&xbundle->xbridge->xbundles, &xbundle->list_node); | |
370 | list_init(&xbundle->xports); | |
371 | } | |
372 | ||
373 | ovs_assert(xbundle->xbridge); | |
374 | ||
375 | free(xbundle->name); | |
376 | xbundle->name = xstrdup(name); | |
377 | ||
378 | xbundle->vlan_mode = vlan_mode; | |
379 | xbundle->vlan = vlan; | |
380 | xbundle->trunks = trunks; | |
381 | xbundle->use_priority_tags = use_priority_tags; | |
382 | xbundle->floodable = floodable; | |
383 | ||
384 | if (xbundle->bond != bond) { | |
385 | bond_unref(xbundle->bond); | |
386 | xbundle->bond = bond_ref(bond); | |
387 | } | |
388 | ||
389 | if (xbundle->lacp != lacp) { | |
390 | lacp_unref(xbundle->lacp); | |
391 | xbundle->lacp = lacp_ref(lacp); | |
392 | } | |
393 | } | |
394 | ||
395 | void | |
396 | xlate_bundle_remove(struct ofbundle *ofbundle) | |
397 | { | |
398 | struct xbundle *xbundle = xbundle_lookup(ofbundle); | |
399 | struct xport *xport, *next; | |
400 | ||
401 | if (!xbundle) { | |
402 | return; | |
403 | } | |
404 | ||
405 | LIST_FOR_EACH_SAFE (xport, next, bundle_node, &xbundle->xports) { | |
406 | list_remove(&xport->bundle_node); | |
407 | xport->xbundle = NULL; | |
408 | } | |
409 | ||
410 | hmap_remove(&xbundles, &xbundle->hmap_node); | |
411 | list_remove(&xbundle->list_node); | |
412 | bond_unref(xbundle->bond); | |
413 | lacp_unref(xbundle->lacp); | |
414 | free(xbundle->name); | |
415 | free(xbundle); | |
416 | } | |
417 | ||
418 | void | |
419 | xlate_ofport_set(struct ofproto_dpif *ofproto, struct ofbundle *ofbundle, | |
420 | struct ofport_dpif *ofport, ofp_port_t ofp_port, | |
421 | odp_port_t odp_port, const struct netdev *netdev, | |
422 | const struct cfm *cfm, const struct bfd *bfd, | |
9d189a50 | 423 | struct ofport_dpif *peer, int stp_port_no, |
55954f6e | 424 | const struct ofproto_port_queue *qdscp_list, size_t n_qdscp, |
dd8cd4b4 SH |
425 | enum ofputil_port_config config, |
426 | enum ofputil_port_state state, bool is_tunnel, | |
9d189a50 | 427 | bool may_enable) |
46c88433 EJ |
428 | { |
429 | struct xport *xport = xport_lookup(ofport); | |
55954f6e | 430 | size_t i; |
46c88433 EJ |
431 | |
432 | if (!xport) { | |
433 | xport = xzalloc(sizeof *xport); | |
434 | xport->ofport = ofport; | |
435 | xport->xbridge = xbridge_lookup(ofproto); | |
436 | xport->ofp_port = ofp_port; | |
437 | ||
55954f6e | 438 | hmap_init(&xport->skb_priorities); |
46c88433 EJ |
439 | hmap_insert(&xports, &xport->hmap_node, hash_pointer(ofport, 0)); |
440 | hmap_insert(&xport->xbridge->xports, &xport->ofp_node, | |
441 | hash_ofp_port(xport->ofp_port)); | |
442 | } | |
443 | ||
444 | ovs_assert(xport->ofp_port == ofp_port); | |
445 | ||
446 | xport->config = config; | |
dd8cd4b4 | 447 | xport->state = state; |
9d189a50 | 448 | xport->stp_port_no = stp_port_no; |
46c88433 EJ |
449 | xport->is_tunnel = is_tunnel; |
450 | xport->may_enable = may_enable; | |
451 | xport->odp_port = odp_port; | |
452 | ||
453 | if (xport->netdev != netdev) { | |
454 | netdev_close(xport->netdev); | |
455 | xport->netdev = netdev_ref(netdev); | |
456 | } | |
457 | ||
458 | if (xport->cfm != cfm) { | |
459 | cfm_unref(xport->cfm); | |
460 | xport->cfm = cfm_ref(cfm); | |
461 | } | |
462 | ||
463 | if (xport->bfd != bfd) { | |
464 | bfd_unref(xport->bfd); | |
465 | xport->bfd = bfd_ref(bfd); | |
466 | } | |
467 | ||
468 | if (xport->peer) { | |
469 | xport->peer->peer = NULL; | |
470 | } | |
5e6af486 | 471 | xport->peer = xport_lookup(peer); |
46c88433 EJ |
472 | if (xport->peer) { |
473 | xport->peer->peer = xport; | |
474 | } | |
475 | ||
476 | if (xport->xbundle) { | |
477 | list_remove(&xport->bundle_node); | |
478 | } | |
5e6af486 | 479 | xport->xbundle = xbundle_lookup(ofbundle); |
46c88433 EJ |
480 | if (xport->xbundle) { |
481 | list_insert(&xport->xbundle->xports, &xport->bundle_node); | |
482 | } | |
55954f6e EJ |
483 | |
484 | clear_skb_priorities(xport); | |
485 | for (i = 0; i < n_qdscp; i++) { | |
486 | struct skb_priority_to_dscp *pdscp; | |
487 | uint32_t skb_priority; | |
488 | ||
89a8a7f0 EJ |
489 | if (dpif_queue_to_priority(xport->xbridge->dpif, qdscp_list[i].queue, |
490 | &skb_priority)) { | |
55954f6e EJ |
491 | continue; |
492 | } | |
493 | ||
494 | pdscp = xmalloc(sizeof *pdscp); | |
495 | pdscp->skb_priority = skb_priority; | |
496 | pdscp->dscp = (qdscp_list[i].dscp << 2) & IP_DSCP_MASK; | |
497 | hmap_insert(&xport->skb_priorities, &pdscp->hmap_node, | |
498 | hash_int(pdscp->skb_priority, 0)); | |
499 | } | |
46c88433 EJ |
500 | } |
501 | ||
502 | void | |
503 | xlate_ofport_remove(struct ofport_dpif *ofport) | |
504 | { | |
505 | struct xport *xport = xport_lookup(ofport); | |
506 | ||
507 | if (!xport) { | |
508 | return; | |
509 | } | |
510 | ||
511 | if (xport->peer) { | |
512 | xport->peer->peer = NULL; | |
513 | xport->peer = NULL; | |
514 | } | |
515 | ||
e621a12d EJ |
516 | if (xport->xbundle) { |
517 | list_remove(&xport->bundle_node); | |
518 | } | |
519 | ||
55954f6e EJ |
520 | clear_skb_priorities(xport); |
521 | hmap_destroy(&xport->skb_priorities); | |
522 | ||
46c88433 EJ |
523 | hmap_remove(&xports, &xport->hmap_node); |
524 | hmap_remove(&xport->xbridge->xports, &xport->ofp_node); | |
525 | ||
526 | netdev_close(xport->netdev); | |
527 | cfm_unref(xport->cfm); | |
528 | bfd_unref(xport->bfd); | |
529 | free(xport); | |
530 | } | |
531 | ||
8449c4d6 EJ |
532 | /* Given a datpath, packet, and flow metadata ('backer', 'packet', and 'key' |
533 | * respectively), populates 'flow' with the result of odp_flow_key_to_flow(). | |
836fbda7 SH |
534 | * Optionally populates 'ofproto' with the ofproto_dpif, 'odp_in_port' with |
535 | * the datapath in_port, that 'packet' ingressed, and 'ipfix', 'sflow', and | |
536 | * 'netflow' with the appropriate handles for those protocols if they're | |
537 | * enabled. Caller is responsible for unrefing them. | |
8449c4d6 EJ |
538 | * |
539 | * If 'ofproto' is nonnull, requires 'flow''s in_port to exist. Otherwise sets | |
540 | * 'flow''s in_port to OFPP_NONE. | |
541 | * | |
542 | * This function does post-processing on data returned from | |
543 | * odp_flow_key_to_flow() to help make VLAN splinters transparent to the rest | |
544 | * of the upcall processing logic. In particular, if the extracted in_port is | |
545 | * a VLAN splinter port, it replaces flow->in_port by the "real" port, sets | |
546 | * flow->vlan_tci correctly for the VLAN of the VLAN splinter port, and pushes | |
547 | * a VLAN header onto 'packet' (if it is nonnull). | |
548 | * | |
549 | * Similarly, this function also includes some logic to help with tunnels. It | |
550 | * may modify 'flow' as necessary to make the tunneling implementation | |
551 | * transparent to the upcall processing logic. | |
552 | * | |
553 | * Returns 0 if successful, ENODEV if the parsed flow has no associated ofport, | |
554 | * or some other positive errno if there are other problems. */ | |
555 | int | |
556 | xlate_receive(const struct dpif_backer *backer, struct ofpbuf *packet, | |
836fbda7 | 557 | const struct nlattr *key, size_t key_len, struct flow *flow, |
1dfdb9b3 EJ |
558 | struct ofproto_dpif **ofproto, struct dpif_ipfix **ipfix, |
559 | struct dpif_sflow **sflow, struct netflow **netflow, | |
560 | odp_port_t *odp_in_port) | |
8449c4d6 | 561 | { |
8449c4d6 EJ |
562 | const struct xport *xport; |
563 | int error = ENODEV; | |
564 | ||
dc24a00f | 565 | ovs_rwlock_rdlock(&xlate_rwlock); |
836fbda7 | 566 | if (odp_flow_key_to_flow(key, key_len, flow) == ODP_FIT_ERROR) { |
8449c4d6 EJ |
567 | error = EINVAL; |
568 | goto exit; | |
569 | } | |
570 | ||
571 | if (odp_in_port) { | |
572 | *odp_in_port = flow->in_port.odp_port; | |
573 | } | |
574 | ||
575 | xport = xport_lookup(tnl_port_should_receive(flow) | |
d6fc5f57 EJ |
576 | ? tnl_port_receive(flow) |
577 | : odp_port_to_ofport(backer, flow->in_port.odp_port)); | |
8449c4d6 EJ |
578 | |
579 | flow->in_port.ofp_port = xport ? xport->ofp_port : OFPP_NONE; | |
580 | if (!xport) { | |
581 | goto exit; | |
582 | } | |
583 | ||
584 | if (vsp_adjust_flow(xport->xbridge->ofproto, flow)) { | |
585 | if (packet) { | |
586 | /* Make the packet resemble the flow, so that it gets sent to | |
587 | * an OpenFlow controller properly, so that it looks correct | |
588 | * for sFlow, and so that flow_extract() will get the correct | |
da546e07 | 589 | * vlan_tci if it is called on 'packet'. */ |
1bf02876 | 590 | eth_push_vlan(packet, htons(ETH_TYPE_VLAN), flow->vlan_tci); |
8449c4d6 | 591 | } |
8449c4d6 EJ |
592 | } |
593 | error = 0; | |
594 | ||
595 | if (ofproto) { | |
596 | *ofproto = xport->xbridge->ofproto; | |
597 | } | |
598 | ||
1dfdb9b3 EJ |
599 | if (ipfix) { |
600 | *ipfix = dpif_ipfix_ref(xport->xbridge->ipfix); | |
601 | } | |
602 | ||
603 | if (sflow) { | |
604 | *sflow = dpif_sflow_ref(xport->xbridge->sflow); | |
605 | } | |
606 | ||
607 | if (netflow) { | |
608 | *netflow = netflow_ref(xport->xbridge->netflow); | |
609 | } | |
610 | ||
8449c4d6 | 611 | exit: |
dc24a00f | 612 | ovs_rwlock_unlock(&xlate_rwlock); |
8449c4d6 EJ |
613 | return error; |
614 | } | |
615 | ||
46c88433 EJ |
616 | static struct xbridge * |
617 | xbridge_lookup(const struct ofproto_dpif *ofproto) | |
618 | { | |
619 | struct xbridge *xbridge; | |
620 | ||
5e6af486 EJ |
621 | if (!ofproto) { |
622 | return NULL; | |
623 | } | |
624 | ||
46c88433 EJ |
625 | HMAP_FOR_EACH_IN_BUCKET (xbridge, hmap_node, hash_pointer(ofproto, 0), |
626 | &xbridges) { | |
627 | if (xbridge->ofproto == ofproto) { | |
628 | return xbridge; | |
629 | } | |
630 | } | |
631 | return NULL; | |
632 | } | |
633 | ||
634 | static struct xbundle * | |
635 | xbundle_lookup(const struct ofbundle *ofbundle) | |
636 | { | |
637 | struct xbundle *xbundle; | |
638 | ||
5e6af486 EJ |
639 | if (!ofbundle) { |
640 | return NULL; | |
641 | } | |
642 | ||
46c88433 EJ |
643 | HMAP_FOR_EACH_IN_BUCKET (xbundle, hmap_node, hash_pointer(ofbundle, 0), |
644 | &xbundles) { | |
645 | if (xbundle->ofbundle == ofbundle) { | |
646 | return xbundle; | |
647 | } | |
648 | } | |
649 | return NULL; | |
650 | } | |
651 | ||
652 | static struct xport * | |
5e6af486 | 653 | xport_lookup(const struct ofport_dpif *ofport) |
46c88433 EJ |
654 | { |
655 | struct xport *xport; | |
656 | ||
5e6af486 EJ |
657 | if (!ofport) { |
658 | return NULL; | |
659 | } | |
660 | ||
46c88433 EJ |
661 | HMAP_FOR_EACH_IN_BUCKET (xport, hmap_node, hash_pointer(ofport, 0), |
662 | &xports) { | |
663 | if (xport->ofport == ofport) { | |
664 | return xport; | |
665 | } | |
666 | } | |
667 | return NULL; | |
668 | } | |
669 | ||
40085e56 EJ |
670 | static struct stp_port * |
671 | xport_get_stp_port(const struct xport *xport) | |
672 | { | |
92cf817b | 673 | return xport->xbridge->stp && xport->stp_port_no != -1 |
40085e56 EJ |
674 | ? stp_get_port(xport->xbridge->stp, xport->stp_port_no) |
675 | : NULL; | |
676 | } | |
9d189a50 | 677 | |
0d1cee12 | 678 | static bool |
9d189a50 EJ |
679 | xport_stp_learn_state(const struct xport *xport) |
680 | { | |
40085e56 EJ |
681 | struct stp_port *sp = xport_get_stp_port(xport); |
682 | return stp_learn_in_state(sp ? stp_port_get_state(sp) : STP_DISABLED); | |
9d189a50 EJ |
683 | } |
684 | ||
685 | static bool | |
686 | xport_stp_forward_state(const struct xport *xport) | |
687 | { | |
40085e56 EJ |
688 | struct stp_port *sp = xport_get_stp_port(xport); |
689 | return stp_forward_in_state(sp ? stp_port_get_state(sp) : STP_DISABLED); | |
9d189a50 EJ |
690 | } |
691 | ||
0d1cee12 K |
692 | static bool |
693 | xport_stp_listen_state(const struct xport *xport) | |
694 | { | |
695 | struct stp_port *sp = xport_get_stp_port(xport); | |
696 | return stp_listen_in_state(sp ? stp_port_get_state(sp) : STP_DISABLED); | |
697 | } | |
698 | ||
9d189a50 EJ |
699 | /* Returns true if STP should process 'flow'. Sets fields in 'wc' that |
700 | * were used to make the determination.*/ | |
701 | static bool | |
702 | stp_should_process_flow(const struct flow *flow, struct flow_wildcards *wc) | |
703 | { | |
704 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); | |
705 | return eth_addr_equals(flow->dl_dst, eth_addr_stp); | |
706 | } | |
707 | ||
708 | static void | |
709 | stp_process_packet(const struct xport *xport, const struct ofpbuf *packet) | |
710 | { | |
40085e56 | 711 | struct stp_port *sp = xport_get_stp_port(xport); |
9d189a50 | 712 | struct ofpbuf payload = *packet; |
1f317cb5 | 713 | struct eth_header *eth = ofpbuf_data(&payload); |
9d189a50 EJ |
714 | |
715 | /* Sink packets on ports that have STP disabled when the bridge has | |
716 | * STP enabled. */ | |
717 | if (!sp || stp_port_get_state(sp) == STP_DISABLED) { | |
718 | return; | |
719 | } | |
720 | ||
721 | /* Trim off padding on payload. */ | |
1f317cb5 PS |
722 | if (ofpbuf_size(&payload) > ntohs(eth->eth_type) + ETH_HEADER_LEN) { |
723 | ofpbuf_set_size(&payload, ntohs(eth->eth_type) + ETH_HEADER_LEN); | |
9d189a50 EJ |
724 | } |
725 | ||
726 | if (ofpbuf_try_pull(&payload, ETH_HEADER_LEN + LLC_HEADER_LEN)) { | |
1f317cb5 | 727 | stp_received_bpdu(sp, ofpbuf_data(&payload), ofpbuf_size(&payload)); |
9d189a50 EJ |
728 | } |
729 | } | |
730 | ||
46c88433 EJ |
731 | static struct xport * |
732 | get_ofp_port(const struct xbridge *xbridge, ofp_port_t ofp_port) | |
733 | { | |
734 | struct xport *xport; | |
735 | ||
736 | HMAP_FOR_EACH_IN_BUCKET (xport, ofp_node, hash_ofp_port(ofp_port), | |
737 | &xbridge->xports) { | |
738 | if (xport->ofp_port == ofp_port) { | |
739 | return xport; | |
740 | } | |
741 | } | |
742 | return NULL; | |
743 | } | |
744 | ||
745 | static odp_port_t | |
746 | ofp_port_to_odp_port(const struct xbridge *xbridge, ofp_port_t ofp_port) | |
747 | { | |
748 | const struct xport *xport = get_ofp_port(xbridge, ofp_port); | |
749 | return xport ? xport->odp_port : ODPP_NONE; | |
750 | } | |
751 | ||
dd8cd4b4 SH |
752 | static bool |
753 | odp_port_is_alive(const struct xlate_ctx *ctx, ofp_port_t ofp_port) | |
754 | { | |
755 | struct xport *xport; | |
756 | ||
757 | xport = get_ofp_port(ctx->xbridge, ofp_port); | |
758 | if (!xport || xport->config & OFPUTIL_PC_PORT_DOWN || | |
759 | xport->state & OFPUTIL_PS_LINK_DOWN) { | |
760 | return false; | |
761 | } | |
762 | ||
763 | return true; | |
764 | } | |
765 | ||
766 | static const struct ofputil_bucket * | |
767 | group_first_live_bucket(const struct xlate_ctx *, const struct group_dpif *, | |
768 | int depth); | |
769 | ||
770 | static bool | |
771 | group_is_alive(const struct xlate_ctx *ctx, uint32_t group_id, int depth) | |
772 | { | |
773 | struct group_dpif *group; | |
774 | bool hit; | |
775 | ||
776 | hit = group_dpif_lookup(ctx->xbridge->ofproto, group_id, &group); | |
777 | if (!hit) { | |
778 | return false; | |
779 | } | |
780 | ||
781 | hit = group_first_live_bucket(ctx, group, depth) != NULL; | |
782 | ||
783 | group_dpif_release(group); | |
784 | return hit; | |
785 | } | |
786 | ||
787 | #define MAX_LIVENESS_RECURSION 128 /* Arbitrary limit */ | |
788 | ||
789 | static bool | |
790 | bucket_is_alive(const struct xlate_ctx *ctx, | |
791 | const struct ofputil_bucket *bucket, int depth) | |
792 | { | |
793 | if (depth >= MAX_LIVENESS_RECURSION) { | |
794 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); | |
795 | ||
796 | VLOG_WARN_RL(&rl, "bucket chaining exceeded %d links", | |
797 | MAX_LIVENESS_RECURSION); | |
798 | return false; | |
799 | } | |
800 | ||
fe7e5749 | 801 | return !ofputil_bucket_has_liveness(bucket) || |
d6fc5f57 EJ |
802 | (bucket->watch_port != OFPP_ANY && |
803 | odp_port_is_alive(ctx, bucket->watch_port)) || | |
804 | (bucket->watch_group != OFPG_ANY && | |
805 | group_is_alive(ctx, bucket->watch_group, depth + 1)); | |
dd8cd4b4 SH |
806 | } |
807 | ||
808 | static const struct ofputil_bucket * | |
809 | group_first_live_bucket(const struct xlate_ctx *ctx, | |
810 | const struct group_dpif *group, int depth) | |
811 | { | |
812 | struct ofputil_bucket *bucket; | |
813 | const struct list *buckets; | |
814 | ||
815 | group_dpif_get_buckets(group, &buckets); | |
816 | LIST_FOR_EACH (bucket, list_node, buckets) { | |
817 | if (bucket_is_alive(ctx, bucket, depth)) { | |
818 | return bucket; | |
819 | } | |
820 | } | |
821 | ||
822 | return NULL; | |
823 | } | |
824 | ||
fe7e5749 SH |
825 | static const struct ofputil_bucket * |
826 | group_best_live_bucket(const struct xlate_ctx *ctx, | |
827 | const struct group_dpif *group, | |
828 | uint32_t basis) | |
829 | { | |
830 | const struct ofputil_bucket *best_bucket = NULL; | |
831 | uint32_t best_score = 0; | |
832 | int i = 0; | |
833 | ||
834 | const struct ofputil_bucket *bucket; | |
835 | const struct list *buckets; | |
836 | ||
837 | group_dpif_get_buckets(group, &buckets); | |
838 | LIST_FOR_EACH (bucket, list_node, buckets) { | |
839 | if (bucket_is_alive(ctx, bucket, 0)) { | |
7cb279c2 | 840 | uint32_t score = (hash_int(i, basis) & 0xffff) * bucket->weight; |
fe7e5749 SH |
841 | if (score >= best_score) { |
842 | best_bucket = bucket; | |
843 | best_score = score; | |
844 | } | |
845 | } | |
846 | i++; | |
847 | } | |
848 | ||
849 | return best_bucket; | |
850 | } | |
851 | ||
9583bc14 | 852 | static bool |
46c88433 | 853 | xbundle_trunks_vlan(const struct xbundle *bundle, uint16_t vlan) |
9583bc14 EJ |
854 | { |
855 | return (bundle->vlan_mode != PORT_VLAN_ACCESS | |
856 | && (!bundle->trunks || bitmap_is_set(bundle->trunks, vlan))); | |
857 | } | |
858 | ||
859 | static bool | |
46c88433 EJ |
860 | xbundle_includes_vlan(const struct xbundle *xbundle, uint16_t vlan) |
861 | { | |
862 | return vlan == xbundle->vlan || xbundle_trunks_vlan(xbundle, vlan); | |
863 | } | |
864 | ||
865 | static mirror_mask_t | |
866 | xbundle_mirror_out(const struct xbridge *xbridge, struct xbundle *xbundle) | |
867 | { | |
868 | return xbundle != &ofpp_none_bundle | |
869 | ? mirror_bundle_out(xbridge->mbridge, xbundle->ofbundle) | |
870 | : 0; | |
871 | } | |
872 | ||
873 | static mirror_mask_t | |
874 | xbundle_mirror_src(const struct xbridge *xbridge, struct xbundle *xbundle) | |
9583bc14 | 875 | { |
46c88433 EJ |
876 | return xbundle != &ofpp_none_bundle |
877 | ? mirror_bundle_src(xbridge->mbridge, xbundle->ofbundle) | |
878 | : 0; | |
9583bc14 EJ |
879 | } |
880 | ||
46c88433 EJ |
881 | static mirror_mask_t |
882 | xbundle_mirror_dst(const struct xbridge *xbridge, struct xbundle *xbundle) | |
9583bc14 | 883 | { |
46c88433 EJ |
884 | return xbundle != &ofpp_none_bundle |
885 | ? mirror_bundle_dst(xbridge->mbridge, xbundle->ofbundle) | |
886 | : 0; | |
887 | } | |
888 | ||
889 | static struct xbundle * | |
890 | lookup_input_bundle(const struct xbridge *xbridge, ofp_port_t in_port, | |
891 | bool warn, struct xport **in_xportp) | |
892 | { | |
893 | struct xport *xport; | |
9583bc14 EJ |
894 | |
895 | /* Find the port and bundle for the received packet. */ | |
46c88433 EJ |
896 | xport = get_ofp_port(xbridge, in_port); |
897 | if (in_xportp) { | |
898 | *in_xportp = xport; | |
9583bc14 | 899 | } |
46c88433 EJ |
900 | if (xport && xport->xbundle) { |
901 | return xport->xbundle; | |
9583bc14 EJ |
902 | } |
903 | ||
904 | /* Special-case OFPP_NONE, which a controller may use as the ingress | |
905 | * port for traffic that it is sourcing. */ | |
906 | if (in_port == OFPP_NONE) { | |
907 | return &ofpp_none_bundle; | |
908 | } | |
909 | ||
910 | /* Odd. A few possible reasons here: | |
911 | * | |
912 | * - We deleted a port but there are still a few packets queued up | |
913 | * from it. | |
914 | * | |
915 | * - Someone externally added a port (e.g. "ovs-dpctl add-if") that | |
916 | * we don't know about. | |
917 | * | |
918 | * - The ofproto client didn't configure the port as part of a bundle. | |
919 | * This is particularly likely to happen if a packet was received on the | |
920 | * port after it was created, but before the client had a chance to | |
921 | * configure its bundle. | |
922 | */ | |
923 | if (warn) { | |
924 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
925 | ||
926 | VLOG_WARN_RL(&rl, "bridge %s: received packet on unknown " | |
46c88433 | 927 | "port %"PRIu16, xbridge->name, in_port); |
9583bc14 EJ |
928 | } |
929 | return NULL; | |
930 | } | |
931 | ||
932 | static void | |
933 | add_mirror_actions(struct xlate_ctx *ctx, const struct flow *orig_flow) | |
934 | { | |
46c88433 | 935 | const struct xbridge *xbridge = ctx->xbridge; |
9583bc14 | 936 | mirror_mask_t mirrors; |
46c88433 | 937 | struct xbundle *in_xbundle; |
9583bc14 EJ |
938 | uint16_t vlan; |
939 | uint16_t vid; | |
cdf5d3a5 EJ |
940 | |
941 | mirrors = ctx->xout->mirrors; | |
942 | ctx->xout->mirrors = 0; | |
9583bc14 | 943 | |
46c88433 EJ |
944 | in_xbundle = lookup_input_bundle(xbridge, orig_flow->in_port.ofp_port, |
945 | ctx->xin->packet != NULL, NULL); | |
946 | if (!in_xbundle) { | |
9583bc14 EJ |
947 | return; |
948 | } | |
46c88433 | 949 | mirrors |= xbundle_mirror_src(xbridge, in_xbundle); |
9583bc14 EJ |
950 | |
951 | /* Drop frames on bundles reserved for mirroring. */ | |
46c88433 | 952 | if (xbundle_mirror_out(xbridge, in_xbundle)) { |
9583bc14 EJ |
953 | if (ctx->xin->packet != NULL) { |
954 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
955 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet received on port " | |
956 | "%s, which is reserved exclusively for mirroring", | |
46c88433 | 957 | ctx->xbridge->name, in_xbundle->name); |
9583bc14 | 958 | } |
aaa0fbae | 959 | ofpbuf_clear(&ctx->xout->odp_actions); |
9583bc14 EJ |
960 | return; |
961 | } | |
962 | ||
963 | /* Check VLAN. */ | |
964 | vid = vlan_tci_to_vid(orig_flow->vlan_tci); | |
46c88433 | 965 | if (!input_vid_is_valid(vid, in_xbundle, ctx->xin->packet != NULL)) { |
9583bc14 EJ |
966 | return; |
967 | } | |
46c88433 | 968 | vlan = input_vid_to_vlan(in_xbundle, vid); |
9583bc14 | 969 | |
9583bc14 EJ |
970 | if (!mirrors) { |
971 | return; | |
972 | } | |
973 | ||
974 | /* Restore the original packet before adding the mirror actions. */ | |
975 | ctx->xin->flow = *orig_flow; | |
976 | ||
977 | while (mirrors) { | |
ec7ceaed EJ |
978 | mirror_mask_t dup_mirrors; |
979 | struct ofbundle *out; | |
980 | unsigned long *vlans; | |
981 | bool vlan_mirrored; | |
982 | bool has_mirror; | |
983 | int out_vlan; | |
984 | ||
4b6ab2b0 | 985 | has_mirror = mirror_get(xbridge->mbridge, raw_ctz(mirrors), |
ec7ceaed EJ |
986 | &vlans, &dup_mirrors, &out, &out_vlan); |
987 | ovs_assert(has_mirror); | |
988 | ||
989 | if (vlans) { | |
9583bc14 EJ |
990 | ctx->xout->wc.masks.vlan_tci |= htons(VLAN_CFI | VLAN_VID_MASK); |
991 | } | |
ec7ceaed EJ |
992 | vlan_mirrored = !vlans || bitmap_is_set(vlans, vlan); |
993 | free(vlans); | |
9583bc14 | 994 | |
ec7ceaed | 995 | if (!vlan_mirrored) { |
9583bc14 EJ |
996 | mirrors = zero_rightmost_1bit(mirrors); |
997 | continue; | |
998 | } | |
999 | ||
ec7ceaed EJ |
1000 | mirrors &= ~dup_mirrors; |
1001 | ctx->xout->mirrors |= dup_mirrors; | |
1002 | if (out) { | |
46c88433 EJ |
1003 | struct xbundle *out_xbundle = xbundle_lookup(out); |
1004 | if (out_xbundle) { | |
1005 | output_normal(ctx, out_xbundle, vlan); | |
1006 | } | |
ec7ceaed | 1007 | } else if (vlan != out_vlan |
9583bc14 | 1008 | && !eth_addr_is_reserved(orig_flow->dl_dst)) { |
46c88433 | 1009 | struct xbundle *xbundle; |
9583bc14 | 1010 | |
46c88433 EJ |
1011 | LIST_FOR_EACH (xbundle, list_node, &xbridge->xbundles) { |
1012 | if (xbundle_includes_vlan(xbundle, out_vlan) | |
1013 | && !xbundle_mirror_out(xbridge, xbundle)) { | |
1014 | output_normal(ctx, xbundle, out_vlan); | |
9583bc14 EJ |
1015 | } |
1016 | } | |
1017 | } | |
1018 | } | |
1019 | } | |
1020 | ||
1021 | /* Given 'vid', the VID obtained from the 802.1Q header that was received as | |
46c88433 | 1022 | * part of a packet (specify 0 if there was no 802.1Q header), and 'in_xbundle', |
9583bc14 EJ |
1023 | * the bundle on which the packet was received, returns the VLAN to which the |
1024 | * packet belongs. | |
1025 | * | |
1026 | * Both 'vid' and the return value are in the range 0...4095. */ | |
1027 | static uint16_t | |
46c88433 | 1028 | input_vid_to_vlan(const struct xbundle *in_xbundle, uint16_t vid) |
9583bc14 | 1029 | { |
46c88433 | 1030 | switch (in_xbundle->vlan_mode) { |
9583bc14 | 1031 | case PORT_VLAN_ACCESS: |
46c88433 | 1032 | return in_xbundle->vlan; |
9583bc14 EJ |
1033 | break; |
1034 | ||
1035 | case PORT_VLAN_TRUNK: | |
1036 | return vid; | |
1037 | ||
1038 | case PORT_VLAN_NATIVE_UNTAGGED: | |
1039 | case PORT_VLAN_NATIVE_TAGGED: | |
46c88433 | 1040 | return vid ? vid : in_xbundle->vlan; |
9583bc14 EJ |
1041 | |
1042 | default: | |
428b2edd | 1043 | OVS_NOT_REACHED(); |
9583bc14 EJ |
1044 | } |
1045 | } | |
1046 | ||
46c88433 | 1047 | /* Checks whether a packet with the given 'vid' may ingress on 'in_xbundle'. |
9583bc14 EJ |
1048 | * If so, returns true. Otherwise, returns false and, if 'warn' is true, logs |
1049 | * a warning. | |
1050 | * | |
1051 | * 'vid' should be the VID obtained from the 802.1Q header that was received as | |
1052 | * part of a packet (specify 0 if there was no 802.1Q header), in the range | |
1053 | * 0...4095. */ | |
1054 | static bool | |
46c88433 | 1055 | input_vid_is_valid(uint16_t vid, struct xbundle *in_xbundle, bool warn) |
9583bc14 EJ |
1056 | { |
1057 | /* Allow any VID on the OFPP_NONE port. */ | |
46c88433 | 1058 | if (in_xbundle == &ofpp_none_bundle) { |
9583bc14 EJ |
1059 | return true; |
1060 | } | |
1061 | ||
46c88433 | 1062 | switch (in_xbundle->vlan_mode) { |
9583bc14 EJ |
1063 | case PORT_VLAN_ACCESS: |
1064 | if (vid) { | |
1065 | if (warn) { | |
1066 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
46c88433 | 1067 | VLOG_WARN_RL(&rl, "dropping VLAN %"PRIu16" tagged " |
9583bc14 | 1068 | "packet received on port %s configured as VLAN " |
46c88433 EJ |
1069 | "%"PRIu16" access port", vid, in_xbundle->name, |
1070 | in_xbundle->vlan); | |
9583bc14 EJ |
1071 | } |
1072 | return false; | |
1073 | } | |
1074 | return true; | |
1075 | ||
1076 | case PORT_VLAN_NATIVE_UNTAGGED: | |
1077 | case PORT_VLAN_NATIVE_TAGGED: | |
1078 | if (!vid) { | |
1079 | /* Port must always carry its native VLAN. */ | |
1080 | return true; | |
1081 | } | |
1082 | /* Fall through. */ | |
1083 | case PORT_VLAN_TRUNK: | |
46c88433 | 1084 | if (!xbundle_includes_vlan(in_xbundle, vid)) { |
9583bc14 EJ |
1085 | if (warn) { |
1086 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
46c88433 | 1087 | VLOG_WARN_RL(&rl, "dropping VLAN %"PRIu16" packet " |
9583bc14 | 1088 | "received on port %s not configured for trunking " |
46c88433 | 1089 | "VLAN %"PRIu16, vid, in_xbundle->name, vid); |
9583bc14 EJ |
1090 | } |
1091 | return false; | |
1092 | } | |
1093 | return true; | |
1094 | ||
1095 | default: | |
428b2edd | 1096 | OVS_NOT_REACHED(); |
9583bc14 EJ |
1097 | } |
1098 | ||
1099 | } | |
1100 | ||
1101 | /* Given 'vlan', the VLAN that a packet belongs to, and | |
46c88433 | 1102 | * 'out_xbundle', a bundle on which the packet is to be output, returns the VID |
9583bc14 EJ |
1103 | * that should be included in the 802.1Q header. (If the return value is 0, |
1104 | * then the 802.1Q header should only be included in the packet if there is a | |
1105 | * nonzero PCP.) | |
1106 | * | |
1107 | * Both 'vlan' and the return value are in the range 0...4095. */ | |
1108 | static uint16_t | |
46c88433 | 1109 | output_vlan_to_vid(const struct xbundle *out_xbundle, uint16_t vlan) |
9583bc14 | 1110 | { |
46c88433 | 1111 | switch (out_xbundle->vlan_mode) { |
9583bc14 EJ |
1112 | case PORT_VLAN_ACCESS: |
1113 | return 0; | |
1114 | ||
1115 | case PORT_VLAN_TRUNK: | |
1116 | case PORT_VLAN_NATIVE_TAGGED: | |
1117 | return vlan; | |
1118 | ||
1119 | case PORT_VLAN_NATIVE_UNTAGGED: | |
46c88433 | 1120 | return vlan == out_xbundle->vlan ? 0 : vlan; |
9583bc14 EJ |
1121 | |
1122 | default: | |
428b2edd | 1123 | OVS_NOT_REACHED(); |
9583bc14 EJ |
1124 | } |
1125 | } | |
1126 | ||
1127 | static void | |
46c88433 | 1128 | output_normal(struct xlate_ctx *ctx, const struct xbundle *out_xbundle, |
9583bc14 EJ |
1129 | uint16_t vlan) |
1130 | { | |
33bf9176 | 1131 | ovs_be16 *flow_tci = &ctx->xin->flow.vlan_tci; |
9583bc14 EJ |
1132 | uint16_t vid; |
1133 | ovs_be16 tci, old_tci; | |
46c88433 | 1134 | struct xport *xport; |
9583bc14 | 1135 | |
46c88433 EJ |
1136 | vid = output_vlan_to_vid(out_xbundle, vlan); |
1137 | if (list_is_empty(&out_xbundle->xports)) { | |
1138 | /* Partially configured bundle with no slaves. Drop the packet. */ | |
1139 | return; | |
1140 | } else if (!out_xbundle->bond) { | |
adcf00ba | 1141 | ctx->xout->use_recirc = false; |
46c88433 EJ |
1142 | xport = CONTAINER_OF(list_front(&out_xbundle->xports), struct xport, |
1143 | bundle_node); | |
9583bc14 | 1144 | } else { |
46c88433 | 1145 | struct ofport_dpif *ofport; |
adcf00ba | 1146 | struct xlate_recirc *xr = &ctx->xout->recirc; |
54ecb5a2 | 1147 | struct flow_wildcards *wc = &ctx->xout->wc; |
adcf00ba AZ |
1148 | |
1149 | if (ctx->xbridge->enable_recirc) { | |
1150 | ctx->xout->use_recirc = bond_may_recirc( | |
1151 | out_xbundle->bond, &xr->recirc_id, &xr->hash_bias); | |
1152 | ||
1153 | if (ctx->xout->use_recirc) { | |
1154 | /* Only TCP mode uses recirculation. */ | |
1155 | xr->hash_alg = OVS_RECIRC_HASH_ALG_L4; | |
1156 | bond_update_post_recirc_rules(out_xbundle->bond, false); | |
54ecb5a2 AZ |
1157 | |
1158 | /* Recirculation does not require unmasking hash fields. */ | |
1159 | wc = NULL; | |
adcf00ba AZ |
1160 | } |
1161 | } | |
46c88433 | 1162 | |
54ecb5a2 AZ |
1163 | ofport = bond_choose_output_slave(out_xbundle->bond, |
1164 | &ctx->xin->flow, wc, vid); | |
5e6af486 | 1165 | xport = xport_lookup(ofport); |
46c88433 EJ |
1166 | |
1167 | if (!xport) { | |
9583bc14 EJ |
1168 | /* No slaves enabled, so drop packet. */ |
1169 | return; | |
1170 | } | |
d6fc5f57 EJ |
1171 | |
1172 | if (ctx->xin->resubmit_stats) { | |
1173 | bond_account(out_xbundle->bond, &ctx->xin->flow, vid, | |
1174 | ctx->xin->resubmit_stats->n_bytes); | |
1175 | } | |
9583bc14 EJ |
1176 | } |
1177 | ||
33bf9176 | 1178 | old_tci = *flow_tci; |
9583bc14 | 1179 | tci = htons(vid); |
46c88433 | 1180 | if (tci || out_xbundle->use_priority_tags) { |
33bf9176 | 1181 | tci |= *flow_tci & htons(VLAN_PCP_MASK); |
9583bc14 EJ |
1182 | if (tci) { |
1183 | tci |= htons(VLAN_CFI); | |
1184 | } | |
1185 | } | |
33bf9176 | 1186 | *flow_tci = tci; |
9583bc14 | 1187 | |
46c88433 | 1188 | compose_output_action(ctx, xport->ofp_port); |
33bf9176 | 1189 | *flow_tci = old_tci; |
9583bc14 EJ |
1190 | } |
1191 | ||
1192 | /* A VM broadcasts a gratuitous ARP to indicate that it has resumed after | |
1193 | * migration. Older Citrix-patched Linux DomU used gratuitous ARP replies to | |
1194 | * indicate this; newer upstream kernels use gratuitous ARP requests. */ | |
1195 | static bool | |
1196 | is_gratuitous_arp(const struct flow *flow, struct flow_wildcards *wc) | |
1197 | { | |
1198 | if (flow->dl_type != htons(ETH_TYPE_ARP)) { | |
1199 | return false; | |
1200 | } | |
1201 | ||
1202 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); | |
1203 | if (!eth_addr_is_broadcast(flow->dl_dst)) { | |
1204 | return false; | |
1205 | } | |
1206 | ||
1207 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); | |
1208 | if (flow->nw_proto == ARP_OP_REPLY) { | |
1209 | return true; | |
1210 | } else if (flow->nw_proto == ARP_OP_REQUEST) { | |
1211 | memset(&wc->masks.nw_src, 0xff, sizeof wc->masks.nw_src); | |
1212 | memset(&wc->masks.nw_dst, 0xff, sizeof wc->masks.nw_dst); | |
1213 | ||
1214 | return flow->nw_src == flow->nw_dst; | |
1215 | } else { | |
1216 | return false; | |
1217 | } | |
1218 | } | |
1219 | ||
ee047520 BP |
1220 | /* Checks whether a MAC learning update is necessary for MAC learning table |
1221 | * 'ml' given that a packet matching 'flow' was received on 'in_xbundle' in | |
1222 | * 'vlan'. | |
1223 | * | |
1224 | * Most packets processed through the MAC learning table do not actually | |
1225 | * change it in any way. This function requires only a read lock on the MAC | |
1226 | * learning table, so it is much cheaper in this common case. | |
1227 | * | |
1228 | * Keep the code here synchronized with that in update_learning_table__() | |
1229 | * below. */ | |
1230 | static bool | |
1231 | is_mac_learning_update_needed(const struct mac_learning *ml, | |
1232 | const struct flow *flow, | |
1233 | struct flow_wildcards *wc, | |
1234 | int vlan, struct xbundle *in_xbundle) | |
d6fc5f57 | 1235 | OVS_REQ_RDLOCK(ml->rwlock) |
9583bc14 EJ |
1236 | { |
1237 | struct mac_entry *mac; | |
1238 | ||
ee047520 BP |
1239 | if (!mac_learning_may_learn(ml, flow->dl_src, vlan)) { |
1240 | return false; | |
1241 | } | |
1242 | ||
1243 | mac = mac_learning_lookup(ml, flow->dl_src, vlan); | |
1244 | if (!mac || mac_entry_age(ml, mac)) { | |
1245 | return true; | |
9583bc14 EJ |
1246 | } |
1247 | ||
ee047520 BP |
1248 | if (is_gratuitous_arp(flow, wc)) { |
1249 | /* We don't want to learn from gratuitous ARP packets that are | |
1250 | * reflected back over bond slaves so we lock the learning table. */ | |
1251 | if (!in_xbundle->bond) { | |
1252 | return true; | |
1253 | } else if (mac_entry_is_grat_arp_locked(mac)) { | |
1254 | return false; | |
1255 | } | |
1256 | } | |
1257 | ||
1258 | return mac->port.p != in_xbundle->ofbundle; | |
1259 | } | |
1260 | ||
1261 | ||
1262 | /* Updates MAC learning table 'ml' given that a packet matching 'flow' was | |
1263 | * received on 'in_xbundle' in 'vlan'. | |
1264 | * | |
1265 | * This code repeats all the checks in is_mac_learning_update_needed() because | |
1266 | * the lock was released between there and here and thus the MAC learning state | |
1267 | * could have changed. | |
1268 | * | |
1269 | * Keep the code here synchronized with that in is_mac_learning_update_needed() | |
1270 | * above. */ | |
1271 | static void | |
1272 | update_learning_table__(const struct xbridge *xbridge, | |
1273 | const struct flow *flow, struct flow_wildcards *wc, | |
1274 | int vlan, struct xbundle *in_xbundle) | |
d6fc5f57 | 1275 | OVS_REQ_WRLOCK(xbridge->ml->rwlock) |
ee047520 BP |
1276 | { |
1277 | struct mac_entry *mac; | |
1278 | ||
46c88433 | 1279 | if (!mac_learning_may_learn(xbridge->ml, flow->dl_src, vlan)) { |
ee047520 | 1280 | return; |
9583bc14 EJ |
1281 | } |
1282 | ||
46c88433 | 1283 | mac = mac_learning_insert(xbridge->ml, flow->dl_src, vlan); |
9583bc14 EJ |
1284 | if (is_gratuitous_arp(flow, wc)) { |
1285 | /* We don't want to learn from gratuitous ARP packets that are | |
1286 | * reflected back over bond slaves so we lock the learning table. */ | |
46c88433 | 1287 | if (!in_xbundle->bond) { |
9583bc14 EJ |
1288 | mac_entry_set_grat_arp_lock(mac); |
1289 | } else if (mac_entry_is_grat_arp_locked(mac)) { | |
ee047520 | 1290 | return; |
9583bc14 EJ |
1291 | } |
1292 | } | |
1293 | ||
30618594 | 1294 | if (mac->port.p != in_xbundle->ofbundle) { |
9583bc14 EJ |
1295 | /* The log messages here could actually be useful in debugging, |
1296 | * so keep the rate limit relatively high. */ | |
1297 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(30, 300); | |
ee047520 | 1298 | |
9583bc14 EJ |
1299 | VLOG_DBG_RL(&rl, "bridge %s: learned that "ETH_ADDR_FMT" is " |
1300 | "on port %s in VLAN %d", | |
46c88433 EJ |
1301 | xbridge->name, ETH_ADDR_ARGS(flow->dl_src), |
1302 | in_xbundle->name, vlan); | |
9583bc14 | 1303 | |
46c88433 | 1304 | mac->port.p = in_xbundle->ofbundle; |
30618594 | 1305 | mac_learning_changed(xbridge->ml); |
9583bc14 | 1306 | } |
ee047520 BP |
1307 | } |
1308 | ||
1309 | static void | |
1310 | update_learning_table(const struct xbridge *xbridge, | |
1311 | const struct flow *flow, struct flow_wildcards *wc, | |
1312 | int vlan, struct xbundle *in_xbundle) | |
1313 | { | |
1314 | bool need_update; | |
1315 | ||
1316 | /* Don't learn the OFPP_NONE port. */ | |
1317 | if (in_xbundle == &ofpp_none_bundle) { | |
1318 | return; | |
1319 | } | |
1320 | ||
1321 | /* First try the common case: no change to MAC learning table. */ | |
1322 | ovs_rwlock_rdlock(&xbridge->ml->rwlock); | |
1323 | need_update = is_mac_learning_update_needed(xbridge->ml, flow, wc, vlan, | |
1324 | in_xbundle); | |
509c0149 | 1325 | ovs_rwlock_unlock(&xbridge->ml->rwlock); |
ee047520 BP |
1326 | |
1327 | if (need_update) { | |
1328 | /* Slow path: MAC learning table might need an update. */ | |
1329 | ovs_rwlock_wrlock(&xbridge->ml->rwlock); | |
1330 | update_learning_table__(xbridge, flow, wc, vlan, in_xbundle); | |
1331 | ovs_rwlock_unlock(&xbridge->ml->rwlock); | |
1332 | } | |
9583bc14 EJ |
1333 | } |
1334 | ||
46c88433 | 1335 | /* Determines whether packets in 'flow' within 'xbridge' should be forwarded or |
9583bc14 EJ |
1336 | * dropped. Returns true if they may be forwarded, false if they should be |
1337 | * dropped. | |
1338 | * | |
46c88433 | 1339 | * 'in_port' must be the xport that corresponds to flow->in_port. |
9583bc14 EJ |
1340 | * 'in_port' must be part of a bundle (e.g. in_port->bundle must be nonnull). |
1341 | * | |
1342 | * 'vlan' must be the VLAN that corresponds to flow->vlan_tci on 'in_port', as | |
1343 | * returned by input_vid_to_vlan(). It must be a valid VLAN for 'in_port', as | |
1344 | * checked by input_vid_is_valid(). | |
1345 | * | |
1346 | * May also add tags to '*tags', although the current implementation only does | |
1347 | * so in one special case. | |
1348 | */ | |
1349 | static bool | |
46c88433 | 1350 | is_admissible(struct xlate_ctx *ctx, struct xport *in_port, |
9583bc14 EJ |
1351 | uint16_t vlan) |
1352 | { | |
46c88433 EJ |
1353 | struct xbundle *in_xbundle = in_port->xbundle; |
1354 | const struct xbridge *xbridge = ctx->xbridge; | |
9583bc14 | 1355 | struct flow *flow = &ctx->xin->flow; |
9583bc14 EJ |
1356 | |
1357 | /* Drop frames for reserved multicast addresses | |
1358 | * only if forward_bpdu option is absent. */ | |
46c88433 | 1359 | if (!xbridge->forward_bpdu && eth_addr_is_reserved(flow->dl_dst)) { |
9583bc14 EJ |
1360 | xlate_report(ctx, "packet has reserved destination MAC, dropping"); |
1361 | return false; | |
1362 | } | |
1363 | ||
46c88433 | 1364 | if (in_xbundle->bond) { |
9583bc14 EJ |
1365 | struct mac_entry *mac; |
1366 | ||
46c88433 | 1367 | switch (bond_check_admissibility(in_xbundle->bond, in_port->ofport, |
4a1b8f30 | 1368 | flow->dl_dst)) { |
9583bc14 EJ |
1369 | case BV_ACCEPT: |
1370 | break; | |
1371 | ||
1372 | case BV_DROP: | |
1373 | xlate_report(ctx, "bonding refused admissibility, dropping"); | |
1374 | return false; | |
1375 | ||
1376 | case BV_DROP_IF_MOVED: | |
509c0149 | 1377 | ovs_rwlock_rdlock(&xbridge->ml->rwlock); |
30618594 | 1378 | mac = mac_learning_lookup(xbridge->ml, flow->dl_src, vlan); |
46c88433 | 1379 | if (mac && mac->port.p != in_xbundle->ofbundle && |
9583bc14 EJ |
1380 | (!is_gratuitous_arp(flow, &ctx->xout->wc) |
1381 | || mac_entry_is_grat_arp_locked(mac))) { | |
509c0149 | 1382 | ovs_rwlock_unlock(&xbridge->ml->rwlock); |
9583bc14 | 1383 | xlate_report(ctx, "SLB bond thinks this packet looped back, " |
d6fc5f57 | 1384 | "dropping"); |
9583bc14 EJ |
1385 | return false; |
1386 | } | |
509c0149 | 1387 | ovs_rwlock_unlock(&xbridge->ml->rwlock); |
9583bc14 EJ |
1388 | break; |
1389 | } | |
1390 | } | |
1391 | ||
1392 | return true; | |
1393 | } | |
1394 | ||
1395 | static void | |
1396 | xlate_normal(struct xlate_ctx *ctx) | |
1397 | { | |
33bf9176 BP |
1398 | struct flow_wildcards *wc = &ctx->xout->wc; |
1399 | struct flow *flow = &ctx->xin->flow; | |
46c88433 EJ |
1400 | struct xbundle *in_xbundle; |
1401 | struct xport *in_port; | |
9583bc14 | 1402 | struct mac_entry *mac; |
d6d5bbc9 | 1403 | void *mac_port; |
9583bc14 EJ |
1404 | uint16_t vlan; |
1405 | uint16_t vid; | |
1406 | ||
1407 | ctx->xout->has_normal = true; | |
1408 | ||
33bf9176 BP |
1409 | memset(&wc->masks.dl_src, 0xff, sizeof wc->masks.dl_src); |
1410 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); | |
1dd35f8a | 1411 | wc->masks.vlan_tci |= htons(VLAN_VID_MASK | VLAN_CFI); |
9583bc14 | 1412 | |
46c88433 EJ |
1413 | in_xbundle = lookup_input_bundle(ctx->xbridge, flow->in_port.ofp_port, |
1414 | ctx->xin->packet != NULL, &in_port); | |
1415 | if (!in_xbundle) { | |
9583bc14 EJ |
1416 | xlate_report(ctx, "no input bundle, dropping"); |
1417 | return; | |
1418 | } | |
1419 | ||
1420 | /* Drop malformed frames. */ | |
33bf9176 BP |
1421 | if (flow->dl_type == htons(ETH_TYPE_VLAN) && |
1422 | !(flow->vlan_tci & htons(VLAN_CFI))) { | |
9583bc14 EJ |
1423 | if (ctx->xin->packet != NULL) { |
1424 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
1425 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet with partial " | |
1426 | "VLAN tag received on port %s", | |
46c88433 | 1427 | ctx->xbridge->name, in_xbundle->name); |
9583bc14 EJ |
1428 | } |
1429 | xlate_report(ctx, "partial VLAN tag, dropping"); | |
1430 | return; | |
1431 | } | |
1432 | ||
1433 | /* Drop frames on bundles reserved for mirroring. */ | |
46c88433 | 1434 | if (xbundle_mirror_out(ctx->xbridge, in_xbundle)) { |
9583bc14 EJ |
1435 | if (ctx->xin->packet != NULL) { |
1436 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
1437 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet received on port " | |
1438 | "%s, which is reserved exclusively for mirroring", | |
46c88433 | 1439 | ctx->xbridge->name, in_xbundle->name); |
9583bc14 EJ |
1440 | } |
1441 | xlate_report(ctx, "input port is mirror output port, dropping"); | |
1442 | return; | |
1443 | } | |
1444 | ||
1445 | /* Check VLAN. */ | |
33bf9176 | 1446 | vid = vlan_tci_to_vid(flow->vlan_tci); |
46c88433 | 1447 | if (!input_vid_is_valid(vid, in_xbundle, ctx->xin->packet != NULL)) { |
9583bc14 EJ |
1448 | xlate_report(ctx, "disallowed VLAN VID for this input port, dropping"); |
1449 | return; | |
1450 | } | |
46c88433 | 1451 | vlan = input_vid_to_vlan(in_xbundle, vid); |
9583bc14 EJ |
1452 | |
1453 | /* Check other admissibility requirements. */ | |
1454 | if (in_port && !is_admissible(ctx, in_port, vlan)) { | |
1455 | return; | |
1456 | } | |
1457 | ||
1458 | /* Learn source MAC. */ | |
1459 | if (ctx->xin->may_learn) { | |
46c88433 | 1460 | update_learning_table(ctx->xbridge, flow, wc, vlan, in_xbundle); |
9583bc14 EJ |
1461 | } |
1462 | ||
1463 | /* Determine output bundle. */ | |
509c0149 | 1464 | ovs_rwlock_rdlock(&ctx->xbridge->ml->rwlock); |
30618594 | 1465 | mac = mac_learning_lookup(ctx->xbridge->ml, flow->dl_dst, vlan); |
d6d5bbc9 EJ |
1466 | mac_port = mac ? mac->port.p : NULL; |
1467 | ovs_rwlock_unlock(&ctx->xbridge->ml->rwlock); | |
1468 | ||
1469 | if (mac_port) { | |
1470 | struct xbundle *mac_xbundle = xbundle_lookup(mac_port); | |
46c88433 | 1471 | if (mac_xbundle && mac_xbundle != in_xbundle) { |
9583bc14 | 1472 | xlate_report(ctx, "forwarding to learned port"); |
46c88433 EJ |
1473 | output_normal(ctx, mac_xbundle, vlan); |
1474 | } else if (!mac_xbundle) { | |
1475 | xlate_report(ctx, "learned port is unknown, dropping"); | |
9583bc14 EJ |
1476 | } else { |
1477 | xlate_report(ctx, "learned port is input port, dropping"); | |
1478 | } | |
1479 | } else { | |
46c88433 | 1480 | struct xbundle *xbundle; |
9583bc14 EJ |
1481 | |
1482 | xlate_report(ctx, "no learned MAC for destination, flooding"); | |
46c88433 EJ |
1483 | LIST_FOR_EACH (xbundle, list_node, &ctx->xbridge->xbundles) { |
1484 | if (xbundle != in_xbundle | |
1485 | && xbundle_includes_vlan(xbundle, vlan) | |
1486 | && xbundle->floodable | |
1487 | && !xbundle_mirror_out(ctx->xbridge, xbundle)) { | |
1488 | output_normal(ctx, xbundle, vlan); | |
9583bc14 EJ |
1489 | } |
1490 | } | |
1491 | ctx->xout->nf_output_iface = NF_OUT_FLOOD; | |
1492 | } | |
1493 | } | |
1494 | ||
1495 | /* Compose SAMPLE action for sFlow or IPFIX. The given probability is | |
1496 | * the number of packets out of UINT32_MAX to sample. The given | |
1497 | * cookie is passed back in the callback for each sampled packet. | |
1498 | */ | |
1499 | static size_t | |
46c88433 | 1500 | compose_sample_action(const struct xbridge *xbridge, |
9583bc14 EJ |
1501 | struct ofpbuf *odp_actions, |
1502 | const struct flow *flow, | |
1503 | const uint32_t probability, | |
1504 | const union user_action_cookie *cookie, | |
1505 | const size_t cookie_size) | |
1506 | { | |
1507 | size_t sample_offset, actions_offset; | |
89a8a7f0 | 1508 | odp_port_t odp_port; |
9583bc14 | 1509 | int cookie_offset; |
89a8a7f0 | 1510 | uint32_t pid; |
9583bc14 EJ |
1511 | |
1512 | sample_offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_SAMPLE); | |
1513 | ||
1514 | nl_msg_put_u32(odp_actions, OVS_SAMPLE_ATTR_PROBABILITY, probability); | |
1515 | ||
1516 | actions_offset = nl_msg_start_nested(odp_actions, OVS_SAMPLE_ATTR_ACTIONS); | |
89a8a7f0 EJ |
1517 | |
1518 | odp_port = ofp_port_to_odp_port(xbridge, flow->in_port.ofp_port); | |
1954e6bb | 1519 | pid = dpif_port_get_pid(xbridge->dpif, odp_port, 0); |
89a8a7f0 | 1520 | cookie_offset = odp_put_userspace_action(pid, cookie, cookie_size, odp_actions); |
9583bc14 EJ |
1521 | |
1522 | nl_msg_end_nested(odp_actions, actions_offset); | |
1523 | nl_msg_end_nested(odp_actions, sample_offset); | |
1524 | return cookie_offset; | |
1525 | } | |
1526 | ||
1527 | static void | |
46c88433 EJ |
1528 | compose_sflow_cookie(const struct xbridge *xbridge, ovs_be16 vlan_tci, |
1529 | odp_port_t odp_port, unsigned int n_outputs, | |
1530 | union user_action_cookie *cookie) | |
9583bc14 EJ |
1531 | { |
1532 | int ifindex; | |
1533 | ||
1534 | cookie->type = USER_ACTION_COOKIE_SFLOW; | |
1535 | cookie->sflow.vlan_tci = vlan_tci; | |
1536 | ||
1537 | /* See http://www.sflow.org/sflow_version_5.txt (search for "Input/output | |
1538 | * port information") for the interpretation of cookie->output. */ | |
1539 | switch (n_outputs) { | |
1540 | case 0: | |
1541 | /* 0x40000000 | 256 means "packet dropped for unknown reason". */ | |
1542 | cookie->sflow.output = 0x40000000 | 256; | |
1543 | break; | |
1544 | ||
1545 | case 1: | |
46c88433 | 1546 | ifindex = dpif_sflow_odp_port_to_ifindex(xbridge->sflow, odp_port); |
9583bc14 EJ |
1547 | if (ifindex) { |
1548 | cookie->sflow.output = ifindex; | |
1549 | break; | |
1550 | } | |
1551 | /* Fall through. */ | |
1552 | default: | |
1553 | /* 0x80000000 means "multiple output ports. */ | |
1554 | cookie->sflow.output = 0x80000000 | n_outputs; | |
1555 | break; | |
1556 | } | |
1557 | } | |
1558 | ||
1559 | /* Compose SAMPLE action for sFlow bridge sampling. */ | |
1560 | static size_t | |
46c88433 | 1561 | compose_sflow_action(const struct xbridge *xbridge, |
9583bc14 EJ |
1562 | struct ofpbuf *odp_actions, |
1563 | const struct flow *flow, | |
4e022ec0 | 1564 | odp_port_t odp_port) |
9583bc14 EJ |
1565 | { |
1566 | uint32_t probability; | |
1567 | union user_action_cookie cookie; | |
1568 | ||
46c88433 | 1569 | if (!xbridge->sflow || flow->in_port.ofp_port == OFPP_NONE) { |
9583bc14 EJ |
1570 | return 0; |
1571 | } | |
1572 | ||
46c88433 EJ |
1573 | probability = dpif_sflow_get_probability(xbridge->sflow); |
1574 | compose_sflow_cookie(xbridge, htons(0), odp_port, | |
4e022ec0 | 1575 | odp_port == ODPP_NONE ? 0 : 1, &cookie); |
9583bc14 | 1576 | |
46c88433 | 1577 | return compose_sample_action(xbridge, odp_actions, flow, probability, |
9583bc14 EJ |
1578 | &cookie, sizeof cookie.sflow); |
1579 | } | |
1580 | ||
1581 | static void | |
1582 | compose_flow_sample_cookie(uint16_t probability, uint32_t collector_set_id, | |
1583 | uint32_t obs_domain_id, uint32_t obs_point_id, | |
1584 | union user_action_cookie *cookie) | |
1585 | { | |
1586 | cookie->type = USER_ACTION_COOKIE_FLOW_SAMPLE; | |
1587 | cookie->flow_sample.probability = probability; | |
1588 | cookie->flow_sample.collector_set_id = collector_set_id; | |
1589 | cookie->flow_sample.obs_domain_id = obs_domain_id; | |
1590 | cookie->flow_sample.obs_point_id = obs_point_id; | |
1591 | } | |
1592 | ||
1593 | static void | |
1594 | compose_ipfix_cookie(union user_action_cookie *cookie) | |
1595 | { | |
1596 | cookie->type = USER_ACTION_COOKIE_IPFIX; | |
1597 | } | |
1598 | ||
1599 | /* Compose SAMPLE action for IPFIX bridge sampling. */ | |
1600 | static void | |
46c88433 | 1601 | compose_ipfix_action(const struct xbridge *xbridge, |
9583bc14 EJ |
1602 | struct ofpbuf *odp_actions, |
1603 | const struct flow *flow) | |
1604 | { | |
1605 | uint32_t probability; | |
1606 | union user_action_cookie cookie; | |
1607 | ||
46c88433 | 1608 | if (!xbridge->ipfix || flow->in_port.ofp_port == OFPP_NONE) { |
9583bc14 EJ |
1609 | return; |
1610 | } | |
1611 | ||
46c88433 | 1612 | probability = dpif_ipfix_get_bridge_exporter_probability(xbridge->ipfix); |
9583bc14 EJ |
1613 | compose_ipfix_cookie(&cookie); |
1614 | ||
46c88433 | 1615 | compose_sample_action(xbridge, odp_actions, flow, probability, |
9583bc14 EJ |
1616 | &cookie, sizeof cookie.ipfix); |
1617 | } | |
1618 | ||
1619 | /* SAMPLE action for sFlow must be first action in any given list of | |
1620 | * actions. At this point we do not have all information required to | |
1621 | * build it. So try to build sample action as complete as possible. */ | |
1622 | static void | |
1623 | add_sflow_action(struct xlate_ctx *ctx) | |
1624 | { | |
46c88433 | 1625 | ctx->user_cookie_offset = compose_sflow_action(ctx->xbridge, |
9583bc14 | 1626 | &ctx->xout->odp_actions, |
4e022ec0 | 1627 | &ctx->xin->flow, ODPP_NONE); |
9583bc14 EJ |
1628 | ctx->sflow_odp_port = 0; |
1629 | ctx->sflow_n_outputs = 0; | |
1630 | } | |
1631 | ||
1632 | /* SAMPLE action for IPFIX must be 1st or 2nd action in any given list | |
1633 | * of actions, eventually after the SAMPLE action for sFlow. */ | |
1634 | static void | |
1635 | add_ipfix_action(struct xlate_ctx *ctx) | |
1636 | { | |
46c88433 | 1637 | compose_ipfix_action(ctx->xbridge, &ctx->xout->odp_actions, |
9583bc14 EJ |
1638 | &ctx->xin->flow); |
1639 | } | |
1640 | ||
1641 | /* Fix SAMPLE action according to data collected while composing ODP actions. | |
1642 | * We need to fix SAMPLE actions OVS_SAMPLE_ATTR_ACTIONS attribute, i.e. nested | |
1643 | * USERSPACE action's user-cookie which is required for sflow. */ | |
1644 | static void | |
1645 | fix_sflow_action(struct xlate_ctx *ctx) | |
1646 | { | |
1647 | const struct flow *base = &ctx->base_flow; | |
1648 | union user_action_cookie *cookie; | |
1649 | ||
1650 | if (!ctx->user_cookie_offset) { | |
1651 | return; | |
1652 | } | |
1653 | ||
1654 | cookie = ofpbuf_at(&ctx->xout->odp_actions, ctx->user_cookie_offset, | |
1655 | sizeof cookie->sflow); | |
1656 | ovs_assert(cookie->type == USER_ACTION_COOKIE_SFLOW); | |
1657 | ||
46c88433 | 1658 | compose_sflow_cookie(ctx->xbridge, base->vlan_tci, |
9583bc14 EJ |
1659 | ctx->sflow_odp_port, ctx->sflow_n_outputs, cookie); |
1660 | } | |
1661 | ||
db7d4e46 | 1662 | static enum slow_path_reason |
642dc74d | 1663 | process_special(struct xlate_ctx *ctx, const struct flow *flow, |
46c88433 | 1664 | const struct xport *xport, const struct ofpbuf *packet) |
db7d4e46 | 1665 | { |
642dc74d | 1666 | struct flow_wildcards *wc = &ctx->xout->wc; |
46c88433 | 1667 | const struct xbridge *xbridge = ctx->xbridge; |
642dc74d | 1668 | |
46c88433 | 1669 | if (!xport) { |
db7d4e46 | 1670 | return 0; |
46c88433 | 1671 | } else if (xport->cfm && cfm_should_process_flow(xport->cfm, flow, wc)) { |
db7d4e46 | 1672 | if (packet) { |
46c88433 | 1673 | cfm_process_heartbeat(xport->cfm, packet); |
db7d4e46 JP |
1674 | } |
1675 | return SLOW_CFM; | |
fab52e16 | 1676 | } else if (xport->bfd && bfd_should_process_flow(xport->bfd, flow, wc)) { |
db7d4e46 | 1677 | if (packet) { |
46c88433 | 1678 | bfd_process_packet(xport->bfd, flow, packet); |
60d02c72 AW |
1679 | /* If POLL received, immediately sends FINAL back. */ |
1680 | if (bfd_should_send_packet(xport->bfd)) { | |
1681 | if (xport->peer) { | |
1682 | ofproto_dpif_monitor_port_send_soon(xport->ofport); | |
1683 | } else { | |
1684 | ofproto_dpif_monitor_port_send_soon_safe(xport->ofport); | |
1685 | } | |
1686 | } | |
db7d4e46 JP |
1687 | } |
1688 | return SLOW_BFD; | |
46c88433 | 1689 | } else if (xport->xbundle && xport->xbundle->lacp |
db7d4e46 JP |
1690 | && flow->dl_type == htons(ETH_TYPE_LACP)) { |
1691 | if (packet) { | |
46c88433 | 1692 | lacp_process_packet(xport->xbundle->lacp, xport->ofport, packet); |
db7d4e46 JP |
1693 | } |
1694 | return SLOW_LACP; | |
9d189a50 | 1695 | } else if (xbridge->stp && stp_should_process_flow(flow, wc)) { |
db7d4e46 | 1696 | if (packet) { |
9d189a50 | 1697 | stp_process_packet(xport, packet); |
db7d4e46 JP |
1698 | } |
1699 | return SLOW_STP; | |
1700 | } else { | |
1701 | return 0; | |
1702 | } | |
1703 | } | |
1704 | ||
9583bc14 | 1705 | static void |
4e022ec0 | 1706 | compose_output_action__(struct xlate_ctx *ctx, ofp_port_t ofp_port, |
9583bc14 EJ |
1707 | bool check_stp) |
1708 | { | |
46c88433 | 1709 | const struct xport *xport = get_ofp_port(ctx->xbridge, ofp_port); |
1dd35f8a | 1710 | struct flow_wildcards *wc = &ctx->xout->wc; |
33bf9176 | 1711 | struct flow *flow = &ctx->xin->flow; |
9583bc14 | 1712 | ovs_be16 flow_vlan_tci; |
1362e248 | 1713 | uint32_t flow_pkt_mark; |
9583bc14 | 1714 | uint8_t flow_nw_tos; |
4e022ec0 | 1715 | odp_port_t out_port, odp_port; |
ca077186 | 1716 | uint8_t dscp; |
9583bc14 EJ |
1717 | |
1718 | /* If 'struct flow' gets additional metadata, we'll need to zero it out | |
1719 | * before traversing a patch port. */ | |
a79f29f2 | 1720 | BUILD_ASSERT_DECL(FLOW_WC_SEQ == 25); |
9583bc14 | 1721 | |
46c88433 | 1722 | if (!xport) { |
9583bc14 EJ |
1723 | xlate_report(ctx, "Nonexistent output port"); |
1724 | return; | |
46c88433 | 1725 | } else if (xport->config & OFPUTIL_PC_NO_FWD) { |
9583bc14 EJ |
1726 | xlate_report(ctx, "OFPPC_NO_FWD set, skipping output"); |
1727 | return; | |
0d1cee12 K |
1728 | } else if (check_stp) { |
1729 | if (eth_addr_equals(ctx->base_flow.dl_dst, eth_addr_stp)) { | |
1730 | if (!xport_stp_listen_state(xport)) { | |
1731 | xlate_report(ctx, "STP not in listening state, " | |
1732 | "skipping bpdu output"); | |
1733 | return; | |
1734 | } | |
1735 | } else if (!xport_stp_forward_state(xport)) { | |
1736 | xlate_report(ctx, "STP not in forwarding state, " | |
1737 | "skipping output"); | |
1738 | return; | |
1739 | } | |
9583bc14 EJ |
1740 | } |
1741 | ||
46c88433 EJ |
1742 | if (mbridge_has_mirrors(ctx->xbridge->mbridge) && xport->xbundle) { |
1743 | ctx->xout->mirrors |= xbundle_mirror_dst(xport->xbundle->xbridge, | |
1744 | xport->xbundle); | |
cdf5d3a5 EJ |
1745 | } |
1746 | ||
46c88433 EJ |
1747 | if (xport->peer) { |
1748 | const struct xport *peer = xport->peer; | |
9583bc14 | 1749 | struct flow old_flow = ctx->xin->flow; |
9583bc14 | 1750 | enum slow_path_reason special; |
9583bc14 | 1751 | |
46c88433 EJ |
1752 | ctx->xbridge = peer->xbridge; |
1753 | flow->in_port.ofp_port = peer->ofp_port; | |
33bf9176 BP |
1754 | flow->metadata = htonll(0); |
1755 | memset(&flow->tunnel, 0, sizeof flow->tunnel); | |
1756 | memset(flow->regs, 0, sizeof flow->regs); | |
9583bc14 | 1757 | |
642dc74d | 1758 | special = process_special(ctx, &ctx->xin->flow, peer, |
9583bc14 EJ |
1759 | ctx->xin->packet); |
1760 | if (special) { | |
04594cd5 | 1761 | ctx->xout->slow |= special; |
ddd3c975 | 1762 | } else if (may_receive(peer, ctx)) { |
9d189a50 | 1763 | if (xport_stp_forward_state(peer)) { |
6d328fa2 | 1764 | xlate_table_action(ctx, flow->in_port.ofp_port, 0, true, true); |
9583bc14 EJ |
1765 | } else { |
1766 | /* Forwarding is disabled by STP. Let OFPP_NORMAL and the | |
1767 | * learning action look at the packet, then drop it. */ | |
1768 | struct flow old_base_flow = ctx->base_flow; | |
1f317cb5 | 1769 | size_t old_size = ofpbuf_size(&ctx->xout->odp_actions); |
cdf5d3a5 | 1770 | mirror_mask_t old_mirrors = ctx->xout->mirrors; |
6d328fa2 | 1771 | xlate_table_action(ctx, flow->in_port.ofp_port, 0, true, true); |
cdf5d3a5 | 1772 | ctx->xout->mirrors = old_mirrors; |
9583bc14 | 1773 | ctx->base_flow = old_base_flow; |
1f317cb5 | 1774 | ofpbuf_set_size(&ctx->xout->odp_actions, old_size); |
9583bc14 EJ |
1775 | } |
1776 | } | |
1777 | ||
1778 | ctx->xin->flow = old_flow; | |
832554e3 | 1779 | ctx->xbridge = xport->xbridge; |
9583bc14 EJ |
1780 | |
1781 | if (ctx->xin->resubmit_stats) { | |
46c88433 EJ |
1782 | netdev_vport_inc_tx(xport->netdev, ctx->xin->resubmit_stats); |
1783 | netdev_vport_inc_rx(peer->netdev, ctx->xin->resubmit_stats); | |
a1aeea86 AW |
1784 | if (peer->bfd) { |
1785 | bfd_account_rx(peer->bfd, ctx->xin->resubmit_stats); | |
1786 | } | |
9583bc14 EJ |
1787 | } |
1788 | ||
1789 | return; | |
1790 | } | |
1791 | ||
33bf9176 | 1792 | flow_vlan_tci = flow->vlan_tci; |
1362e248 | 1793 | flow_pkt_mark = flow->pkt_mark; |
33bf9176 | 1794 | flow_nw_tos = flow->nw_tos; |
9583bc14 | 1795 | |
55954f6e | 1796 | if (dscp_from_skb_priority(xport, flow->skb_priority, &dscp)) { |
1ac9326d | 1797 | wc->masks.nw_tos |= IP_DSCP_MASK; |
33bf9176 | 1798 | flow->nw_tos &= ~IP_DSCP_MASK; |
ca077186 | 1799 | flow->nw_tos |= dscp; |
9583bc14 EJ |
1800 | } |
1801 | ||
46c88433 | 1802 | if (xport->is_tunnel) { |
9583bc14 EJ |
1803 | /* Save tunnel metadata so that changes made due to |
1804 | * the Logical (tunnel) Port are not visible for any further | |
1805 | * matches, while explicit set actions on tunnel metadata are. | |
1806 | */ | |
33bf9176 | 1807 | struct flow_tnl flow_tnl = flow->tunnel; |
46c88433 | 1808 | odp_port = tnl_port_send(xport->ofport, flow, &ctx->xout->wc); |
4e022ec0 | 1809 | if (odp_port == ODPP_NONE) { |
9583bc14 EJ |
1810 | xlate_report(ctx, "Tunneling decided against output"); |
1811 | goto out; /* restore flow_nw_tos */ | |
1812 | } | |
33bf9176 | 1813 | if (flow->tunnel.ip_dst == ctx->orig_tunnel_ip_dst) { |
9583bc14 EJ |
1814 | xlate_report(ctx, "Not tunneling to our own address"); |
1815 | goto out; /* restore flow_nw_tos */ | |
1816 | } | |
1817 | if (ctx->xin->resubmit_stats) { | |
46c88433 | 1818 | netdev_vport_inc_tx(xport->netdev, ctx->xin->resubmit_stats); |
9583bc14 EJ |
1819 | } |
1820 | out_port = odp_port; | |
33bf9176 | 1821 | commit_odp_tunnel_action(flow, &ctx->base_flow, |
9583bc14 | 1822 | &ctx->xout->odp_actions); |
33bf9176 | 1823 | flow->tunnel = flow_tnl; /* Restore tunnel metadata */ |
9583bc14 | 1824 | } else { |
46c88433 | 1825 | odp_port = xport->odp_port; |
7614e5d0 | 1826 | out_port = odp_port; |
46c88433 | 1827 | if (ofproto_has_vlan_splinters(ctx->xbridge->ofproto)) { |
7614e5d0 JR |
1828 | ofp_port_t vlandev_port; |
1829 | ||
1dd35f8a | 1830 | wc->masks.vlan_tci |= htons(VLAN_VID_MASK | VLAN_CFI); |
7614e5d0 JR |
1831 | vlandev_port = vsp_realdev_to_vlandev(ctx->xbridge->ofproto, |
1832 | ofp_port, flow->vlan_tci); | |
1833 | if (vlandev_port != ofp_port) { | |
1834 | out_port = ofp_port_to_odp_port(ctx->xbridge, vlandev_port); | |
1835 | flow->vlan_tci = htons(0); | |
1836 | } | |
9583bc14 | 1837 | } |
9583bc14 | 1838 | } |
9583bc14 | 1839 | |
4e022ec0 | 1840 | if (out_port != ODPP_NONE) { |
7fd91025 BP |
1841 | ctx->xout->slow |= commit_odp_actions(flow, &ctx->base_flow, |
1842 | &ctx->xout->odp_actions, | |
8bfd0fda | 1843 | &ctx->xout->wc); |
adcf00ba AZ |
1844 | |
1845 | if (ctx->xout->use_recirc) { | |
1846 | struct ovs_action_recirc *act_recirc; | |
1847 | struct xlate_recirc *xr = &ctx->xout->recirc; | |
1848 | ||
1849 | act_recirc = nl_msg_put_unspec_uninit(&ctx->xout->odp_actions, | |
1850 | OVS_ACTION_ATTR_RECIRC, sizeof *act_recirc); | |
1851 | act_recirc->recirc_id = xr->recirc_id; | |
1852 | act_recirc->hash_alg = xr->hash_alg; | |
1853 | act_recirc->hash_bias = xr->hash_bias; | |
1854 | } else { | |
1855 | nl_msg_put_odp_port(&ctx->xout->odp_actions, OVS_ACTION_ATTR_OUTPUT, | |
1856 | out_port); | |
1857 | } | |
9583bc14 | 1858 | |
6cbbf4fa EJ |
1859 | ctx->sflow_odp_port = odp_port; |
1860 | ctx->sflow_n_outputs++; | |
1861 | ctx->xout->nf_output_iface = ofp_port; | |
1862 | } | |
1863 | ||
1864 | out: | |
9583bc14 | 1865 | /* Restore flow */ |
33bf9176 | 1866 | flow->vlan_tci = flow_vlan_tci; |
1362e248 | 1867 | flow->pkt_mark = flow_pkt_mark; |
33bf9176 | 1868 | flow->nw_tos = flow_nw_tos; |
9583bc14 EJ |
1869 | } |
1870 | ||
1871 | static void | |
4e022ec0 | 1872 | compose_output_action(struct xlate_ctx *ctx, ofp_port_t ofp_port) |
9583bc14 EJ |
1873 | { |
1874 | compose_output_action__(ctx, ofp_port, true); | |
1875 | } | |
1876 | ||
bb61b33d BP |
1877 | static void |
1878 | xlate_recursively(struct xlate_ctx *ctx, struct rule_dpif *rule) | |
bb61b33d BP |
1879 | { |
1880 | struct rule_dpif *old_rule = ctx->rule; | |
6f00e29b | 1881 | struct rule_actions *actions; |
bb61b33d BP |
1882 | |
1883 | if (ctx->xin->resubmit_stats) { | |
70742c7f | 1884 | rule_dpif_credit_stats(rule, ctx->xin->resubmit_stats); |
bb61b33d BP |
1885 | } |
1886 | ||
98b07853 | 1887 | ctx->resubmits++; |
bb61b33d BP |
1888 | ctx->recurse++; |
1889 | ctx->rule = rule; | |
6f00e29b BP |
1890 | actions = rule_dpif_get_actions(rule); |
1891 | do_xlate_actions(actions->ofpacts, actions->ofpacts_len, ctx); | |
bb61b33d BP |
1892 | ctx->rule = old_rule; |
1893 | ctx->recurse--; | |
bb61b33d BP |
1894 | } |
1895 | ||
bd3240ba SH |
1896 | static bool |
1897 | xlate_resubmit_resource_check(struct xlate_ctx *ctx) | |
9583bc14 | 1898 | { |
98b07853 BP |
1899 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); |
1900 | ||
adcf00ba | 1901 | if (ctx->recurse >= MAX_RESUBMIT_RECURSION + MAX_INTERNAL_RESUBMITS) { |
98b07853 BP |
1902 | VLOG_ERR_RL(&rl, "resubmit actions recursed over %d times", |
1903 | MAX_RESUBMIT_RECURSION); | |
adcf00ba | 1904 | } else if (ctx->resubmits >= MAX_RESUBMITS + MAX_INTERNAL_RESUBMITS) { |
98b07853 | 1905 | VLOG_ERR_RL(&rl, "over %d resubmit actions", MAX_RESUBMITS); |
1f317cb5 | 1906 | } else if (ofpbuf_size(&ctx->xout->odp_actions) > UINT16_MAX) { |
98b07853 | 1907 | VLOG_ERR_RL(&rl, "resubmits yielded over 64 kB of actions"); |
1f317cb5 | 1908 | } else if (ofpbuf_size(&ctx->stack) >= 65536) { |
98b07853 BP |
1909 | VLOG_ERR_RL(&rl, "resubmits yielded over 64 kB of stack"); |
1910 | } else { | |
bd3240ba SH |
1911 | return true; |
1912 | } | |
1913 | ||
1914 | return false; | |
1915 | } | |
1916 | ||
1917 | static void | |
6d328fa2 SH |
1918 | xlate_table_action(struct xlate_ctx *ctx, ofp_port_t in_port, uint8_t table_id, |
1919 | bool may_packet_in, bool honor_table_miss) | |
bd3240ba SH |
1920 | { |
1921 | if (xlate_resubmit_resource_check(ctx)) { | |
4e022ec0 | 1922 | ofp_port_t old_in_port = ctx->xin->flow.in_port.ofp_port; |
3f207910 | 1923 | bool skip_wildcards = ctx->xin->skip_wildcards; |
9583bc14 | 1924 | uint8_t old_table_id = ctx->table_id; |
3f207910 | 1925 | struct rule_dpif *rule; |
6d328fa2 SH |
1926 | enum rule_dpif_lookup_verdict verdict; |
1927 | enum ofputil_port_config config = 0; | |
9583bc14 EJ |
1928 | |
1929 | ctx->table_id = table_id; | |
1930 | ||
bb61b33d BP |
1931 | /* Look up a flow with 'in_port' as the input port. Then restore the |
1932 | * original input port (otherwise OFPP_NORMAL and OFPP_IN_PORT will | |
1933 | * have surprising behavior). */ | |
4e022ec0 | 1934 | ctx->xin->flow.in_port.ofp_port = in_port; |
6d328fa2 SH |
1935 | verdict = rule_dpif_lookup_from_table(ctx->xbridge->ofproto, |
1936 | &ctx->xin->flow, | |
1937 | !skip_wildcards | |
1938 | ? &ctx->xout->wc : NULL, | |
1939 | honor_table_miss, | |
1940 | &ctx->table_id, &rule); | |
4e022ec0 | 1941 | ctx->xin->flow.in_port.ofp_port = old_in_port; |
9583bc14 | 1942 | |
ad3efdcb EJ |
1943 | if (ctx->xin->resubmit_hook) { |
1944 | ctx->xin->resubmit_hook(ctx->xin, rule, ctx->recurse); | |
1945 | } | |
1946 | ||
6d328fa2 SH |
1947 | switch (verdict) { |
1948 | case RULE_DPIF_LOOKUP_VERDICT_MATCH: | |
1949 | goto match; | |
1950 | case RULE_DPIF_LOOKUP_VERDICT_CONTROLLER: | |
1951 | if (may_packet_in) { | |
1952 | struct xport *xport; | |
1953 | ||
1954 | xport = get_ofp_port(ctx->xbridge, | |
1955 | ctx->xin->flow.in_port.ofp_port); | |
1956 | config = xport ? xport->config : 0; | |
1957 | break; | |
1958 | } | |
1959 | /* Fall through to drop */ | |
1960 | case RULE_DPIF_LOOKUP_VERDICT_DROP: | |
1961 | config = OFPUTIL_PC_NO_PACKET_IN; | |
1962 | break; | |
6b83a3c5 SH |
1963 | case RULE_DPIF_LOOKUP_VERDICT_DEFAULT: |
1964 | if (!ofproto_dpif_wants_packet_in_on_miss(ctx->xbridge->ofproto)) { | |
1965 | config = OFPUTIL_PC_NO_PACKET_IN; | |
1966 | } | |
1967 | break; | |
6d328fa2 SH |
1968 | default: |
1969 | OVS_NOT_REACHED(); | |
a2143702 | 1970 | } |
6d328fa2 SH |
1971 | |
1972 | choose_miss_rule(config, ctx->xbridge->miss_rule, | |
1973 | ctx->xbridge->no_packet_in_rule, &rule); | |
1974 | ||
1975 | match: | |
a2143702 | 1976 | if (rule) { |
bb61b33d | 1977 | xlate_recursively(ctx, rule); |
a2143702 | 1978 | rule_dpif_unref(rule); |
ad3efdcb EJ |
1979 | } |
1980 | ||
9583bc14 | 1981 | ctx->table_id = old_table_id; |
98b07853 | 1982 | return; |
9583bc14 | 1983 | } |
98b07853 BP |
1984 | |
1985 | ctx->exit = true; | |
9583bc14 EJ |
1986 | } |
1987 | ||
f4fb341b SH |
1988 | static void |
1989 | xlate_group_bucket(struct xlate_ctx *ctx, const struct ofputil_bucket *bucket) | |
1990 | { | |
1991 | uint64_t action_list_stub[1024 / 8]; | |
1992 | struct ofpbuf action_list, action_set; | |
1993 | ||
1994 | ofpbuf_use_const(&action_set, bucket->ofpacts, bucket->ofpacts_len); | |
1995 | ofpbuf_use_stub(&action_list, action_list_stub, sizeof action_list_stub); | |
1996 | ||
1997 | ofpacts_execute_action_set(&action_list, &action_set); | |
1998 | ctx->recurse++; | |
1f317cb5 | 1999 | do_xlate_actions(ofpbuf_data(&action_list), ofpbuf_size(&action_list), ctx); |
f4fb341b SH |
2000 | ctx->recurse--; |
2001 | ||
2002 | ofpbuf_uninit(&action_set); | |
2003 | ofpbuf_uninit(&action_list); | |
2004 | } | |
2005 | ||
2006 | static void | |
2007 | xlate_all_group(struct xlate_ctx *ctx, struct group_dpif *group) | |
2008 | { | |
2009 | const struct ofputil_bucket *bucket; | |
2010 | const struct list *buckets; | |
2011 | struct flow old_flow = ctx->xin->flow; | |
2012 | ||
2013 | group_dpif_get_buckets(group, &buckets); | |
2014 | ||
2015 | LIST_FOR_EACH (bucket, list_node, buckets) { | |
2016 | xlate_group_bucket(ctx, bucket); | |
2017 | /* Roll back flow to previous state. | |
2018 | * This is equivalent to cloning the packet for each bucket. | |
2019 | * | |
2020 | * As a side effect any subsequently applied actions will | |
2021 | * also effectively be applied to a clone of the packet taken | |
2022 | * just before applying the all or indirect group. */ | |
2023 | ctx->xin->flow = old_flow; | |
2024 | } | |
2025 | } | |
2026 | ||
dd8cd4b4 SH |
2027 | static void |
2028 | xlate_ff_group(struct xlate_ctx *ctx, struct group_dpif *group) | |
2029 | { | |
2030 | const struct ofputil_bucket *bucket; | |
2031 | ||
2032 | bucket = group_first_live_bucket(ctx, group, 0); | |
2033 | if (bucket) { | |
2034 | xlate_group_bucket(ctx, bucket); | |
2035 | } | |
2036 | } | |
2037 | ||
fe7e5749 SH |
2038 | static void |
2039 | xlate_select_group(struct xlate_ctx *ctx, struct group_dpif *group) | |
2040 | { | |
2041 | struct flow_wildcards *wc = &ctx->xout->wc; | |
2042 | const struct ofputil_bucket *bucket; | |
2043 | uint32_t basis; | |
2044 | ||
7e36ac42 | 2045 | basis = hash_mac(ctx->xin->flow.dl_dst, 0, 0); |
fe7e5749 SH |
2046 | bucket = group_best_live_bucket(ctx, group, basis); |
2047 | if (bucket) { | |
2048 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); | |
2049 | xlate_group_bucket(ctx, bucket); | |
2050 | } | |
2051 | } | |
2052 | ||
f4fb341b SH |
2053 | static void |
2054 | xlate_group_action__(struct xlate_ctx *ctx, struct group_dpif *group) | |
2055 | { | |
5a070238 BP |
2056 | ctx->in_group = true; |
2057 | ||
f4fb341b SH |
2058 | switch (group_dpif_get_type(group)) { |
2059 | case OFPGT11_ALL: | |
2060 | case OFPGT11_INDIRECT: | |
2061 | xlate_all_group(ctx, group); | |
2062 | break; | |
2063 | case OFPGT11_SELECT: | |
fe7e5749 | 2064 | xlate_select_group(ctx, group); |
f4fb341b | 2065 | break; |
dd8cd4b4 SH |
2066 | case OFPGT11_FF: |
2067 | xlate_ff_group(ctx, group); | |
2068 | break; | |
f4fb341b | 2069 | default: |
428b2edd | 2070 | OVS_NOT_REACHED(); |
f4fb341b SH |
2071 | } |
2072 | group_dpif_release(group); | |
5a070238 BP |
2073 | |
2074 | ctx->in_group = false; | |
2075 | } | |
2076 | ||
2077 | static bool | |
2078 | xlate_group_resource_check(struct xlate_ctx *ctx) | |
2079 | { | |
2080 | if (!xlate_resubmit_resource_check(ctx)) { | |
2081 | return false; | |
2082 | } else if (ctx->in_group) { | |
2083 | /* Prevent nested translation of OpenFlow groups. | |
2084 | * | |
2085 | * OpenFlow allows this restriction. We enforce this restriction only | |
2086 | * because, with the current architecture, we would otherwise have to | |
2087 | * take a possibly recursive read lock on the ofgroup rwlock, which is | |
2088 | * unsafe given that POSIX allows taking a read lock to block if there | |
2089 | * is a thread blocked on taking the write lock. Other solutions | |
2090 | * without this restriction are also possible, but seem unwarranted | |
2091 | * given the current limited use of groups. */ | |
2092 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); | |
2093 | ||
2094 | VLOG_ERR_RL(&rl, "cannot recursively translate OpenFlow group"); | |
2095 | return false; | |
2096 | } else { | |
2097 | return true; | |
2098 | } | |
f4fb341b SH |
2099 | } |
2100 | ||
2101 | static bool | |
2102 | xlate_group_action(struct xlate_ctx *ctx, uint32_t group_id) | |
2103 | { | |
5a070238 | 2104 | if (xlate_group_resource_check(ctx)) { |
f4fb341b SH |
2105 | struct group_dpif *group; |
2106 | bool got_group; | |
2107 | ||
2108 | got_group = group_dpif_lookup(ctx->xbridge->ofproto, group_id, &group); | |
2109 | if (got_group) { | |
2110 | xlate_group_action__(ctx, group); | |
2111 | } else { | |
2112 | return true; | |
2113 | } | |
2114 | } | |
2115 | ||
2116 | return false; | |
2117 | } | |
2118 | ||
9583bc14 EJ |
2119 | static void |
2120 | xlate_ofpact_resubmit(struct xlate_ctx *ctx, | |
2121 | const struct ofpact_resubmit *resubmit) | |
2122 | { | |
4e022ec0 | 2123 | ofp_port_t in_port; |
9583bc14 | 2124 | uint8_t table_id; |
adcf00ba AZ |
2125 | bool may_packet_in = false; |
2126 | bool honor_table_miss = false; | |
2127 | ||
2128 | if (ctx->rule && rule_dpif_is_internal(ctx->rule)) { | |
2129 | /* Still allow missed packets to be sent to the controller | |
2130 | * if resubmitting from an internal table. */ | |
2131 | may_packet_in = true; | |
2132 | honor_table_miss = true; | |
2133 | } | |
9583bc14 EJ |
2134 | |
2135 | in_port = resubmit->in_port; | |
2136 | if (in_port == OFPP_IN_PORT) { | |
4e022ec0 | 2137 | in_port = ctx->xin->flow.in_port.ofp_port; |
9583bc14 EJ |
2138 | } |
2139 | ||
2140 | table_id = resubmit->table_id; | |
2141 | if (table_id == 255) { | |
2142 | table_id = ctx->table_id; | |
2143 | } | |
2144 | ||
adcf00ba AZ |
2145 | xlate_table_action(ctx, in_port, table_id, may_packet_in, |
2146 | honor_table_miss); | |
9583bc14 EJ |
2147 | } |
2148 | ||
2149 | static void | |
2150 | flood_packets(struct xlate_ctx *ctx, bool all) | |
2151 | { | |
46c88433 | 2152 | const struct xport *xport; |
9583bc14 | 2153 | |
46c88433 EJ |
2154 | HMAP_FOR_EACH (xport, ofp_node, &ctx->xbridge->xports) { |
2155 | if (xport->ofp_port == ctx->xin->flow.in_port.ofp_port) { | |
9583bc14 EJ |
2156 | continue; |
2157 | } | |
2158 | ||
2159 | if (all) { | |
46c88433 EJ |
2160 | compose_output_action__(ctx, xport->ofp_port, false); |
2161 | } else if (!(xport->config & OFPUTIL_PC_NO_FLOOD)) { | |
2162 | compose_output_action(ctx, xport->ofp_port); | |
9583bc14 EJ |
2163 | } |
2164 | } | |
2165 | ||
2166 | ctx->xout->nf_output_iface = NF_OUT_FLOOD; | |
2167 | } | |
2168 | ||
2169 | static void | |
2170 | execute_controller_action(struct xlate_ctx *ctx, int len, | |
2171 | enum ofp_packet_in_reason reason, | |
2172 | uint16_t controller_id) | |
2173 | { | |
0fb7792a | 2174 | struct ofproto_packet_in *pin; |
9583bc14 | 2175 | struct ofpbuf *packet; |
758c456d | 2176 | struct pkt_metadata md = PKT_METADATA_INITIALIZER(0); |
9583bc14 | 2177 | |
04594cd5 | 2178 | ctx->xout->slow |= SLOW_CONTROLLER; |
9583bc14 EJ |
2179 | if (!ctx->xin->packet) { |
2180 | return; | |
2181 | } | |
2182 | ||
2183 | packet = ofpbuf_clone(ctx->xin->packet); | |
2184 | ||
7fd91025 BP |
2185 | ctx->xout->slow |= commit_odp_actions(&ctx->xin->flow, &ctx->base_flow, |
2186 | &ctx->xout->odp_actions, | |
8bfd0fda | 2187 | &ctx->xout->wc); |
9583bc14 | 2188 | |
1f317cb5 PS |
2189 | odp_execute_actions(NULL, packet, false, &md, |
2190 | ofpbuf_data(&ctx->xout->odp_actions), | |
2191 | ofpbuf_size(&ctx->xout->odp_actions), NULL); | |
9583bc14 | 2192 | |
ada3a58d | 2193 | pin = xmalloc(sizeof *pin); |
1f317cb5 | 2194 | pin->up.packet_len = ofpbuf_size(packet); |
0fb7792a BP |
2195 | pin->up.packet = ofpbuf_steal_data(packet); |
2196 | pin->up.reason = reason; | |
0fb7792a | 2197 | pin->up.table_id = ctx->table_id; |
d4fa4e79 BP |
2198 | pin->up.cookie = (ctx->rule |
2199 | ? rule_dpif_get_flow_cookie(ctx->rule) | |
2200 | : OVS_BE64_MAX); | |
0fb7792a | 2201 | |
0fb7792a | 2202 | flow_get_metadata(&ctx->xin->flow, &pin->up.fmd); |
9583bc14 | 2203 | |
f11c7538 | 2204 | pin->controller_id = controller_id; |
d38a3c7b | 2205 | pin->send_len = len; |
32260212 SH |
2206 | /* If a rule is a table-miss rule then this is |
2207 | * a table-miss handled by a table-miss rule. | |
2208 | * | |
2209 | * Else, if rule is internal and has a controller action, | |
2210 | * the later being implied by the rule being processed here, | |
2211 | * then this is a table-miss handled without a table-miss rule. | |
2212 | * | |
2213 | * Otherwise this is not a table-miss. */ | |
2214 | pin->miss_type = OFPROTO_PACKET_IN_NO_MISS; | |
2215 | if (ctx->rule) { | |
2216 | if (rule_dpif_is_table_miss(ctx->rule)) { | |
2217 | pin->miss_type = OFPROTO_PACKET_IN_MISS_FLOW; | |
2218 | } else if (rule_dpif_is_internal(ctx->rule)) { | |
2219 | pin->miss_type = OFPROTO_PACKET_IN_MISS_WITHOUT_FLOW; | |
2220 | } | |
2221 | } | |
ada3a58d | 2222 | ofproto_dpif_send_packet_in(ctx->xbridge->ofproto, pin); |
9583bc14 EJ |
2223 | ofpbuf_delete(packet); |
2224 | } | |
2225 | ||
8bfd0fda BP |
2226 | static void |
2227 | compose_mpls_push_action(struct xlate_ctx *ctx, struct ofpact_push_mpls *mpls) | |
9583bc14 | 2228 | { |
33bf9176 BP |
2229 | struct flow_wildcards *wc = &ctx->xout->wc; |
2230 | struct flow *flow = &ctx->xin->flow; | |
8bfd0fda | 2231 | int n; |
33bf9176 | 2232 | |
8bfd0fda | 2233 | ovs_assert(eth_type_mpls(mpls->ethertype)); |
b0a17866 | 2234 | |
8bfd0fda BP |
2235 | n = flow_count_mpls_labels(flow, wc); |
2236 | if (!n) { | |
8bfd0fda BP |
2237 | ctx->xout->slow |= commit_odp_actions(flow, &ctx->base_flow, |
2238 | &ctx->xout->odp_actions, | |
2239 | &ctx->xout->wc); | |
2240 | } else if (n >= FLOW_MAX_MPLS_LABELS) { | |
2241 | if (ctx->xin->packet != NULL) { | |
2242 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
2243 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet on which an " | |
2244 | "MPLS push action can't be performed as it would " | |
2245 | "have more MPLS LSEs than the %d supported.", | |
2246 | ctx->xbridge->name, FLOW_MAX_MPLS_LABELS); | |
9583bc14 | 2247 | } |
8bfd0fda BP |
2248 | ctx->exit = true; |
2249 | return; | |
2250 | } else if (n >= ctx->xbridge->max_mpls_depth) { | |
2251 | COVERAGE_INC(xlate_actions_mpls_overflow); | |
2252 | ctx->xout->slow |= SLOW_ACTION; | |
9583bc14 | 2253 | } |
b0a17866 | 2254 | |
8bfd0fda | 2255 | flow_push_mpls(flow, n, mpls->ethertype, wc); |
9583bc14 EJ |
2256 | } |
2257 | ||
8bfd0fda | 2258 | static void |
9cfef3d0 | 2259 | compose_mpls_pop_action(struct xlate_ctx *ctx, ovs_be16 eth_type) |
9583bc14 | 2260 | { |
33bf9176 | 2261 | struct flow_wildcards *wc = &ctx->xout->wc; |
8bfd0fda BP |
2262 | struct flow *flow = &ctx->xin->flow; |
2263 | int n = flow_count_mpls_labels(flow, wc); | |
33bf9176 | 2264 | |
8bfd0fda BP |
2265 | if (!flow_pop_mpls(flow, n, eth_type, wc) && n >= FLOW_MAX_MPLS_LABELS) { |
2266 | if (ctx->xin->packet != NULL) { | |
2267 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
2268 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet on which an " | |
2269 | "MPLS pop action can't be performed as it has " | |
2270 | "more MPLS LSEs than the %d supported.", | |
2271 | ctx->xbridge->name, FLOW_MAX_MPLS_LABELS); | |
2272 | } | |
2273 | ctx->exit = true; | |
2274 | ofpbuf_clear(&ctx->xout->odp_actions); | |
9583bc14 EJ |
2275 | } |
2276 | } | |
2277 | ||
2278 | static bool | |
2279 | compose_dec_ttl(struct xlate_ctx *ctx, struct ofpact_cnt_ids *ids) | |
2280 | { | |
33bf9176 BP |
2281 | struct flow *flow = &ctx->xin->flow; |
2282 | ||
2283 | if (!is_ip_any(flow)) { | |
9583bc14 EJ |
2284 | return false; |
2285 | } | |
2286 | ||
1dd35f8a | 2287 | ctx->xout->wc.masks.nw_ttl = 0xff; |
33bf9176 BP |
2288 | if (flow->nw_ttl > 1) { |
2289 | flow->nw_ttl--; | |
9583bc14 EJ |
2290 | return false; |
2291 | } else { | |
2292 | size_t i; | |
2293 | ||
2294 | for (i = 0; i < ids->n_controllers; i++) { | |
2295 | execute_controller_action(ctx, UINT16_MAX, OFPR_INVALID_TTL, | |
2296 | ids->cnt_ids[i]); | |
2297 | } | |
2298 | ||
2299 | /* Stop processing for current table. */ | |
2300 | return true; | |
2301 | } | |
2302 | } | |
2303 | ||
8bfd0fda | 2304 | static void |
097d4939 JR |
2305 | compose_set_mpls_label_action(struct xlate_ctx *ctx, ovs_be32 label) |
2306 | { | |
8bfd0fda BP |
2307 | if (eth_type_mpls(ctx->xin->flow.dl_type)) { |
2308 | ctx->xout->wc.masks.mpls_lse[0] |= htonl(MPLS_LABEL_MASK); | |
2309 | set_mpls_lse_label(&ctx->xin->flow.mpls_lse[0], label); | |
097d4939 | 2310 | } |
097d4939 JR |
2311 | } |
2312 | ||
8bfd0fda | 2313 | static void |
097d4939 JR |
2314 | compose_set_mpls_tc_action(struct xlate_ctx *ctx, uint8_t tc) |
2315 | { | |
8bfd0fda BP |
2316 | if (eth_type_mpls(ctx->xin->flow.dl_type)) { |
2317 | ctx->xout->wc.masks.mpls_lse[0] |= htonl(MPLS_TC_MASK); | |
2318 | set_mpls_lse_tc(&ctx->xin->flow.mpls_lse[0], tc); | |
097d4939 | 2319 | } |
097d4939 JR |
2320 | } |
2321 | ||
8bfd0fda | 2322 | static void |
9cfef3d0 | 2323 | compose_set_mpls_ttl_action(struct xlate_ctx *ctx, uint8_t ttl) |
9583bc14 | 2324 | { |
8bfd0fda BP |
2325 | if (eth_type_mpls(ctx->xin->flow.dl_type)) { |
2326 | ctx->xout->wc.masks.mpls_lse[0] |= htonl(MPLS_TTL_MASK); | |
2327 | set_mpls_lse_ttl(&ctx->xin->flow.mpls_lse[0], ttl); | |
b0a17866 | 2328 | } |
9583bc14 EJ |
2329 | } |
2330 | ||
2331 | static bool | |
9cfef3d0 | 2332 | compose_dec_mpls_ttl_action(struct xlate_ctx *ctx) |
9583bc14 | 2333 | { |
33bf9176 | 2334 | struct flow *flow = &ctx->xin->flow; |
8bfd0fda | 2335 | uint8_t ttl = mpls_lse_to_ttl(flow->mpls_lse[0]); |
1dd35f8a JP |
2336 | struct flow_wildcards *wc = &ctx->xout->wc; |
2337 | ||
1dd35f8a | 2338 | memset(&wc->masks.mpls_lse, 0xff, sizeof wc->masks.mpls_lse); |
8bfd0fda BP |
2339 | if (eth_type_mpls(flow->dl_type)) { |
2340 | if (ttl > 1) { | |
2341 | ttl--; | |
2342 | set_mpls_lse_ttl(&flow->mpls_lse[0], ttl); | |
2343 | return false; | |
2344 | } else { | |
2345 | execute_controller_action(ctx, UINT16_MAX, OFPR_INVALID_TTL, 0); | |
9583bc14 | 2346 | |
8bfd0fda BP |
2347 | /* Stop processing for current table. */ |
2348 | return true; | |
2349 | } | |
9583bc14 | 2350 | } else { |
9583bc14 EJ |
2351 | return true; |
2352 | } | |
2353 | } | |
2354 | ||
2355 | static void | |
2356 | xlate_output_action(struct xlate_ctx *ctx, | |
4e022ec0 | 2357 | ofp_port_t port, uint16_t max_len, bool may_packet_in) |
9583bc14 | 2358 | { |
4e022ec0 | 2359 | ofp_port_t prev_nf_output_iface = ctx->xout->nf_output_iface; |
9583bc14 EJ |
2360 | |
2361 | ctx->xout->nf_output_iface = NF_OUT_DROP; | |
2362 | ||
2363 | switch (port) { | |
2364 | case OFPP_IN_PORT: | |
4e022ec0 | 2365 | compose_output_action(ctx, ctx->xin->flow.in_port.ofp_port); |
9583bc14 EJ |
2366 | break; |
2367 | case OFPP_TABLE: | |
4e022ec0 | 2368 | xlate_table_action(ctx, ctx->xin->flow.in_port.ofp_port, |
6d328fa2 | 2369 | 0, may_packet_in, true); |
9583bc14 EJ |
2370 | break; |
2371 | case OFPP_NORMAL: | |
2372 | xlate_normal(ctx); | |
2373 | break; | |
2374 | case OFPP_FLOOD: | |
2375 | flood_packets(ctx, false); | |
2376 | break; | |
2377 | case OFPP_ALL: | |
2378 | flood_packets(ctx, true); | |
2379 | break; | |
2380 | case OFPP_CONTROLLER: | |
2381 | execute_controller_action(ctx, max_len, OFPR_ACTION, 0); | |
2382 | break; | |
2383 | case OFPP_NONE: | |
2384 | break; | |
2385 | case OFPP_LOCAL: | |
2386 | default: | |
4e022ec0 | 2387 | if (port != ctx->xin->flow.in_port.ofp_port) { |
9583bc14 EJ |
2388 | compose_output_action(ctx, port); |
2389 | } else { | |
2390 | xlate_report(ctx, "skipping output to input port"); | |
2391 | } | |
2392 | break; | |
2393 | } | |
2394 | ||
2395 | if (prev_nf_output_iface == NF_OUT_FLOOD) { | |
2396 | ctx->xout->nf_output_iface = NF_OUT_FLOOD; | |
2397 | } else if (ctx->xout->nf_output_iface == NF_OUT_DROP) { | |
2398 | ctx->xout->nf_output_iface = prev_nf_output_iface; | |
2399 | } else if (prev_nf_output_iface != NF_OUT_DROP && | |
2400 | ctx->xout->nf_output_iface != NF_OUT_FLOOD) { | |
2401 | ctx->xout->nf_output_iface = NF_OUT_MULTI; | |
2402 | } | |
2403 | } | |
2404 | ||
2405 | static void | |
2406 | xlate_output_reg_action(struct xlate_ctx *ctx, | |
2407 | const struct ofpact_output_reg *or) | |
2408 | { | |
2409 | uint64_t port = mf_get_subfield(&or->src, &ctx->xin->flow); | |
2410 | if (port <= UINT16_MAX) { | |
2411 | union mf_subvalue value; | |
2412 | ||
2413 | memset(&value, 0xff, sizeof value); | |
2414 | mf_write_subfield_flow(&or->src, &value, &ctx->xout->wc.masks); | |
4e022ec0 AW |
2415 | xlate_output_action(ctx, u16_to_ofp(port), |
2416 | or->max_len, false); | |
9583bc14 EJ |
2417 | } |
2418 | } | |
2419 | ||
2420 | static void | |
2421 | xlate_enqueue_action(struct xlate_ctx *ctx, | |
2422 | const struct ofpact_enqueue *enqueue) | |
2423 | { | |
4e022ec0 | 2424 | ofp_port_t ofp_port = enqueue->port; |
9583bc14 EJ |
2425 | uint32_t queue_id = enqueue->queue; |
2426 | uint32_t flow_priority, priority; | |
2427 | int error; | |
2428 | ||
2429 | /* Translate queue to priority. */ | |
89a8a7f0 | 2430 | error = dpif_queue_to_priority(ctx->xbridge->dpif, queue_id, &priority); |
9583bc14 EJ |
2431 | if (error) { |
2432 | /* Fall back to ordinary output action. */ | |
2433 | xlate_output_action(ctx, enqueue->port, 0, false); | |
2434 | return; | |
2435 | } | |
2436 | ||
2437 | /* Check output port. */ | |
2438 | if (ofp_port == OFPP_IN_PORT) { | |
4e022ec0 AW |
2439 | ofp_port = ctx->xin->flow.in_port.ofp_port; |
2440 | } else if (ofp_port == ctx->xin->flow.in_port.ofp_port) { | |
9583bc14 EJ |
2441 | return; |
2442 | } | |
2443 | ||
2444 | /* Add datapath actions. */ | |
2445 | flow_priority = ctx->xin->flow.skb_priority; | |
2446 | ctx->xin->flow.skb_priority = priority; | |
2447 | compose_output_action(ctx, ofp_port); | |
2448 | ctx->xin->flow.skb_priority = flow_priority; | |
2449 | ||
2450 | /* Update NetFlow output port. */ | |
2451 | if (ctx->xout->nf_output_iface == NF_OUT_DROP) { | |
2452 | ctx->xout->nf_output_iface = ofp_port; | |
2453 | } else if (ctx->xout->nf_output_iface != NF_OUT_FLOOD) { | |
2454 | ctx->xout->nf_output_iface = NF_OUT_MULTI; | |
2455 | } | |
2456 | } | |
2457 | ||
2458 | static void | |
2459 | xlate_set_queue_action(struct xlate_ctx *ctx, uint32_t queue_id) | |
2460 | { | |
2461 | uint32_t skb_priority; | |
2462 | ||
89a8a7f0 | 2463 | if (!dpif_queue_to_priority(ctx->xbridge->dpif, queue_id, &skb_priority)) { |
9583bc14 EJ |
2464 | ctx->xin->flow.skb_priority = skb_priority; |
2465 | } else { | |
2466 | /* Couldn't translate queue to a priority. Nothing to do. A warning | |
2467 | * has already been logged. */ | |
2468 | } | |
2469 | } | |
2470 | ||
2471 | static bool | |
46c88433 | 2472 | slave_enabled_cb(ofp_port_t ofp_port, void *xbridge_) |
9583bc14 | 2473 | { |
46c88433 EJ |
2474 | const struct xbridge *xbridge = xbridge_; |
2475 | struct xport *port; | |
9583bc14 EJ |
2476 | |
2477 | switch (ofp_port) { | |
2478 | case OFPP_IN_PORT: | |
2479 | case OFPP_TABLE: | |
2480 | case OFPP_NORMAL: | |
2481 | case OFPP_FLOOD: | |
2482 | case OFPP_ALL: | |
2483 | case OFPP_NONE: | |
2484 | return true; | |
2485 | case OFPP_CONTROLLER: /* Not supported by the bundle action. */ | |
2486 | return false; | |
2487 | default: | |
46c88433 | 2488 | port = get_ofp_port(xbridge, ofp_port); |
9583bc14 EJ |
2489 | return port ? port->may_enable : false; |
2490 | } | |
2491 | } | |
2492 | ||
2493 | static void | |
2494 | xlate_bundle_action(struct xlate_ctx *ctx, | |
2495 | const struct ofpact_bundle *bundle) | |
2496 | { | |
4e022ec0 | 2497 | ofp_port_t port; |
9583bc14 EJ |
2498 | |
2499 | port = bundle_execute(bundle, &ctx->xin->flow, &ctx->xout->wc, | |
46c88433 EJ |
2500 | slave_enabled_cb, |
2501 | CONST_CAST(struct xbridge *, ctx->xbridge)); | |
9583bc14 | 2502 | if (bundle->dst.field) { |
f74e7df7 JP |
2503 | nxm_reg_load(&bundle->dst, ofp_to_u16(port), &ctx->xin->flow, |
2504 | &ctx->xout->wc); | |
9583bc14 EJ |
2505 | } else { |
2506 | xlate_output_action(ctx, port, 0, false); | |
2507 | } | |
2508 | } | |
2509 | ||
2510 | static void | |
2511 | xlate_learn_action(struct xlate_ctx *ctx, | |
2512 | const struct ofpact_learn *learn) | |
2513 | { | |
1b63b91e BP |
2514 | uint64_t ofpacts_stub[1024 / 8]; |
2515 | struct ofputil_flow_mod fm; | |
9583bc14 | 2516 | struct ofpbuf ofpacts; |
9583bc14 EJ |
2517 | |
2518 | ctx->xout->has_learn = true; | |
2519 | ||
2520 | learn_mask(learn, &ctx->xout->wc); | |
2521 | ||
2522 | if (!ctx->xin->may_learn) { | |
2523 | return; | |
2524 | } | |
2525 | ||
1b63b91e BP |
2526 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); |
2527 | learn_execute(learn, &ctx->xin->flow, &fm, &ofpacts); | |
2528 | ofproto_dpif_flow_mod(ctx->xbridge->ofproto, &fm); | |
2529 | ofpbuf_uninit(&ofpacts); | |
9583bc14 EJ |
2530 | } |
2531 | ||
9583bc14 EJ |
2532 | static void |
2533 | xlate_fin_timeout(struct xlate_ctx *ctx, | |
2534 | const struct ofpact_fin_timeout *oft) | |
2535 | { | |
2536 | if (ctx->xin->tcp_flags & (TCP_FIN | TCP_RST) && ctx->rule) { | |
70742c7f EJ |
2537 | rule_dpif_reduce_timeouts(ctx->rule, oft->fin_idle_timeout, |
2538 | oft->fin_hard_timeout); | |
9583bc14 EJ |
2539 | } |
2540 | } | |
2541 | ||
2542 | static void | |
2543 | xlate_sample_action(struct xlate_ctx *ctx, | |
2544 | const struct ofpact_sample *os) | |
2545 | { | |
2546 | union user_action_cookie cookie; | |
2547 | /* Scale the probability from 16-bit to 32-bit while representing | |
2548 | * the same percentage. */ | |
2549 | uint32_t probability = (os->probability << 16) | os->probability; | |
2550 | ||
4b97b70d BP |
2551 | if (!ctx->xbridge->variable_length_userdata) { |
2552 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); | |
2553 | ||
2554 | VLOG_ERR_RL(&rl, "ignoring NXAST_SAMPLE action because datapath " | |
2555 | "lacks support (needs Linux 3.10+ or kernel module from " | |
2556 | "OVS 1.11+)"); | |
2557 | return; | |
2558 | } | |
2559 | ||
7fd91025 BP |
2560 | ctx->xout->slow |= commit_odp_actions(&ctx->xin->flow, &ctx->base_flow, |
2561 | &ctx->xout->odp_actions, | |
8bfd0fda | 2562 | &ctx->xout->wc); |
9583bc14 EJ |
2563 | |
2564 | compose_flow_sample_cookie(os->probability, os->collector_set_id, | |
2565 | os->obs_domain_id, os->obs_point_id, &cookie); | |
46c88433 | 2566 | compose_sample_action(ctx->xbridge, &ctx->xout->odp_actions, &ctx->xin->flow, |
9583bc14 EJ |
2567 | probability, &cookie, sizeof cookie.flow_sample); |
2568 | } | |
2569 | ||
2570 | static bool | |
46c88433 | 2571 | may_receive(const struct xport *xport, struct xlate_ctx *ctx) |
9583bc14 | 2572 | { |
46c88433 EJ |
2573 | if (xport->config & (eth_addr_equals(ctx->xin->flow.dl_dst, eth_addr_stp) |
2574 | ? OFPUTIL_PC_NO_RECV_STP | |
2575 | : OFPUTIL_PC_NO_RECV)) { | |
9583bc14 EJ |
2576 | return false; |
2577 | } | |
2578 | ||
2579 | /* Only drop packets here if both forwarding and learning are | |
2580 | * disabled. If just learning is enabled, we need to have | |
2581 | * OFPP_NORMAL and the learning action have a look at the packet | |
2582 | * before we can drop it. */ | |
9d189a50 | 2583 | if (!xport_stp_forward_state(xport) && !xport_stp_learn_state(xport)) { |
9583bc14 EJ |
2584 | return false; |
2585 | } | |
2586 | ||
2587 | return true; | |
2588 | } | |
2589 | ||
7fdb60a7 SH |
2590 | static void |
2591 | xlate_write_actions(struct xlate_ctx *ctx, const struct ofpact *a) | |
2592 | { | |
2593 | struct ofpact_nest *on = ofpact_get_WRITE_ACTIONS(a); | |
2594 | ofpbuf_put(&ctx->action_set, on->actions, ofpact_nest_get_action_len(on)); | |
2595 | ofpact_pad(&ctx->action_set); | |
2596 | } | |
2597 | ||
2598 | static void | |
2599 | xlate_action_set(struct xlate_ctx *ctx) | |
2600 | { | |
2601 | uint64_t action_list_stub[1024 / 64]; | |
2602 | struct ofpbuf action_list; | |
2603 | ||
2604 | ofpbuf_use_stub(&action_list, action_list_stub, sizeof action_list_stub); | |
2605 | ofpacts_execute_action_set(&action_list, &ctx->action_set); | |
1f317cb5 | 2606 | do_xlate_actions(ofpbuf_data(&action_list), ofpbuf_size(&action_list), ctx); |
7fdb60a7 SH |
2607 | ofpbuf_uninit(&action_list); |
2608 | } | |
2609 | ||
9583bc14 EJ |
2610 | static void |
2611 | do_xlate_actions(const struct ofpact *ofpacts, size_t ofpacts_len, | |
2612 | struct xlate_ctx *ctx) | |
2613 | { | |
33bf9176 BP |
2614 | struct flow_wildcards *wc = &ctx->xout->wc; |
2615 | struct flow *flow = &ctx->xin->flow; | |
9583bc14 EJ |
2616 | const struct ofpact *a; |
2617 | ||
f47ea021 JR |
2618 | /* dl_type already in the mask, not set below. */ |
2619 | ||
9583bc14 EJ |
2620 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { |
2621 | struct ofpact_controller *controller; | |
2622 | const struct ofpact_metadata *metadata; | |
b2dd70be JR |
2623 | const struct ofpact_set_field *set_field; |
2624 | const struct mf_field *mf; | |
9583bc14 EJ |
2625 | |
2626 | if (ctx->exit) { | |
2627 | break; | |
2628 | } | |
2629 | ||
2630 | switch (a->type) { | |
2631 | case OFPACT_OUTPUT: | |
2632 | xlate_output_action(ctx, ofpact_get_OUTPUT(a)->port, | |
2633 | ofpact_get_OUTPUT(a)->max_len, true); | |
2634 | break; | |
2635 | ||
7395c052 | 2636 | case OFPACT_GROUP: |
f4fb341b SH |
2637 | if (xlate_group_action(ctx, ofpact_get_GROUP(a)->group_id)) { |
2638 | return; | |
2639 | } | |
7395c052 NZ |
2640 | break; |
2641 | ||
9583bc14 EJ |
2642 | case OFPACT_CONTROLLER: |
2643 | controller = ofpact_get_CONTROLLER(a); | |
2644 | execute_controller_action(ctx, controller->max_len, | |
2645 | controller->reason, | |
2646 | controller->controller_id); | |
2647 | break; | |
2648 | ||
2649 | case OFPACT_ENQUEUE: | |
2650 | xlate_enqueue_action(ctx, ofpact_get_ENQUEUE(a)); | |
2651 | break; | |
2652 | ||
2653 | case OFPACT_SET_VLAN_VID: | |
f74e7df7 | 2654 | wc->masks.vlan_tci |= htons(VLAN_VID_MASK | VLAN_CFI); |
ca287d20 JR |
2655 | if (flow->vlan_tci & htons(VLAN_CFI) || |
2656 | ofpact_get_SET_VLAN_VID(a)->push_vlan_if_needed) { | |
2657 | flow->vlan_tci &= ~htons(VLAN_VID_MASK); | |
2658 | flow->vlan_tci |= (htons(ofpact_get_SET_VLAN_VID(a)->vlan_vid) | |
2659 | | htons(VLAN_CFI)); | |
2660 | } | |
9583bc14 EJ |
2661 | break; |
2662 | ||
2663 | case OFPACT_SET_VLAN_PCP: | |
f74e7df7 | 2664 | wc->masks.vlan_tci |= htons(VLAN_PCP_MASK | VLAN_CFI); |
ca287d20 JR |
2665 | if (flow->vlan_tci & htons(VLAN_CFI) || |
2666 | ofpact_get_SET_VLAN_PCP(a)->push_vlan_if_needed) { | |
2667 | flow->vlan_tci &= ~htons(VLAN_PCP_MASK); | |
2668 | flow->vlan_tci |= htons((ofpact_get_SET_VLAN_PCP(a)->vlan_pcp | |
2669 | << VLAN_PCP_SHIFT) | VLAN_CFI); | |
2670 | } | |
9583bc14 EJ |
2671 | break; |
2672 | ||
2673 | case OFPACT_STRIP_VLAN: | |
f74e7df7 | 2674 | memset(&wc->masks.vlan_tci, 0xff, sizeof wc->masks.vlan_tci); |
33bf9176 | 2675 | flow->vlan_tci = htons(0); |
9583bc14 EJ |
2676 | break; |
2677 | ||
2678 | case OFPACT_PUSH_VLAN: | |
2679 | /* XXX 802.1AD(QinQ) */ | |
f74e7df7 | 2680 | memset(&wc->masks.vlan_tci, 0xff, sizeof wc->masks.vlan_tci); |
33bf9176 | 2681 | flow->vlan_tci = htons(VLAN_CFI); |
9583bc14 EJ |
2682 | break; |
2683 | ||
2684 | case OFPACT_SET_ETH_SRC: | |
f74e7df7 | 2685 | memset(&wc->masks.dl_src, 0xff, sizeof wc->masks.dl_src); |
33bf9176 | 2686 | memcpy(flow->dl_src, ofpact_get_SET_ETH_SRC(a)->mac, ETH_ADDR_LEN); |
9583bc14 EJ |
2687 | break; |
2688 | ||
2689 | case OFPACT_SET_ETH_DST: | |
f74e7df7 | 2690 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); |
33bf9176 | 2691 | memcpy(flow->dl_dst, ofpact_get_SET_ETH_DST(a)->mac, ETH_ADDR_LEN); |
9583bc14 EJ |
2692 | break; |
2693 | ||
2694 | case OFPACT_SET_IPV4_SRC: | |
33bf9176 | 2695 | if (flow->dl_type == htons(ETH_TYPE_IP)) { |
f47ea021 | 2696 | memset(&wc->masks.nw_src, 0xff, sizeof wc->masks.nw_src); |
33bf9176 | 2697 | flow->nw_src = ofpact_get_SET_IPV4_SRC(a)->ipv4; |
9583bc14 EJ |
2698 | } |
2699 | break; | |
2700 | ||
2701 | case OFPACT_SET_IPV4_DST: | |
33bf9176 | 2702 | if (flow->dl_type == htons(ETH_TYPE_IP)) { |
f47ea021 | 2703 | memset(&wc->masks.nw_dst, 0xff, sizeof wc->masks.nw_dst); |
33bf9176 | 2704 | flow->nw_dst = ofpact_get_SET_IPV4_DST(a)->ipv4; |
9583bc14 EJ |
2705 | } |
2706 | break; | |
2707 | ||
04f01c24 BP |
2708 | case OFPACT_SET_IP_DSCP: |
2709 | if (is_ip_any(flow)) { | |
f47ea021 | 2710 | wc->masks.nw_tos |= IP_DSCP_MASK; |
33bf9176 | 2711 | flow->nw_tos &= ~IP_DSCP_MASK; |
04f01c24 | 2712 | flow->nw_tos |= ofpact_get_SET_IP_DSCP(a)->dscp; |
9583bc14 EJ |
2713 | } |
2714 | break; | |
2715 | ||
ff14eb7a JR |
2716 | case OFPACT_SET_IP_ECN: |
2717 | if (is_ip_any(flow)) { | |
2718 | wc->masks.nw_tos |= IP_ECN_MASK; | |
2719 | flow->nw_tos &= ~IP_ECN_MASK; | |
2720 | flow->nw_tos |= ofpact_get_SET_IP_ECN(a)->ecn; | |
2721 | } | |
2722 | break; | |
2723 | ||
0c20dbe4 JR |
2724 | case OFPACT_SET_IP_TTL: |
2725 | if (is_ip_any(flow)) { | |
2726 | wc->masks.nw_ttl = 0xff; | |
2727 | flow->nw_ttl = ofpact_get_SET_IP_TTL(a)->ttl; | |
2728 | } | |
2729 | break; | |
2730 | ||
9583bc14 | 2731 | case OFPACT_SET_L4_SRC_PORT: |
33bf9176 | 2732 | if (is_ip_any(flow)) { |
f47ea021 JR |
2733 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); |
2734 | memset(&wc->masks.tp_src, 0xff, sizeof wc->masks.tp_src); | |
33bf9176 | 2735 | flow->tp_src = htons(ofpact_get_SET_L4_SRC_PORT(a)->port); |
9583bc14 EJ |
2736 | } |
2737 | break; | |
2738 | ||
2739 | case OFPACT_SET_L4_DST_PORT: | |
33bf9176 | 2740 | if (is_ip_any(flow)) { |
f47ea021 JR |
2741 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); |
2742 | memset(&wc->masks.tp_dst, 0xff, sizeof wc->masks.tp_dst); | |
33bf9176 | 2743 | flow->tp_dst = htons(ofpact_get_SET_L4_DST_PORT(a)->port); |
9583bc14 EJ |
2744 | } |
2745 | break; | |
2746 | ||
2747 | case OFPACT_RESUBMIT: | |
2748 | xlate_ofpact_resubmit(ctx, ofpact_get_RESUBMIT(a)); | |
2749 | break; | |
2750 | ||
2751 | case OFPACT_SET_TUNNEL: | |
33bf9176 | 2752 | flow->tunnel.tun_id = htonll(ofpact_get_SET_TUNNEL(a)->tun_id); |
9583bc14 EJ |
2753 | break; |
2754 | ||
2755 | case OFPACT_SET_QUEUE: | |
2756 | xlate_set_queue_action(ctx, ofpact_get_SET_QUEUE(a)->queue_id); | |
2757 | break; | |
2758 | ||
2759 | case OFPACT_POP_QUEUE: | |
33bf9176 | 2760 | flow->skb_priority = ctx->orig_skb_priority; |
9583bc14 EJ |
2761 | break; |
2762 | ||
2763 | case OFPACT_REG_MOVE: | |
33bf9176 | 2764 | nxm_execute_reg_move(ofpact_get_REG_MOVE(a), flow, wc); |
9583bc14 EJ |
2765 | break; |
2766 | ||
2767 | case OFPACT_REG_LOAD: | |
f47ea021 | 2768 | nxm_execute_reg_load(ofpact_get_REG_LOAD(a), flow, wc); |
9583bc14 EJ |
2769 | break; |
2770 | ||
b2dd70be JR |
2771 | case OFPACT_SET_FIELD: |
2772 | set_field = ofpact_get_SET_FIELD(a); | |
2773 | mf = set_field->field; | |
2774 | mf_mask_field_and_prereqs(mf, &wc->masks); | |
2775 | ||
2776 | /* Set field action only ever overwrites packet's outermost | |
2777 | * applicable header fields. Do nothing if no header exists. */ | |
2778 | if ((mf->id != MFF_VLAN_VID || flow->vlan_tci & htons(VLAN_CFI)) | |
2779 | && ((mf->id != MFF_MPLS_LABEL && mf->id != MFF_MPLS_TC) | |
f8b63eed | 2780 | || eth_type_mpls(flow->dl_type))) { |
b2dd70be JR |
2781 | mf_set_flow_value(mf, &set_field->value, flow); |
2782 | } | |
2783 | break; | |
2784 | ||
9583bc14 | 2785 | case OFPACT_STACK_PUSH: |
33bf9176 BP |
2786 | nxm_execute_stack_push(ofpact_get_STACK_PUSH(a), flow, wc, |
2787 | &ctx->stack); | |
9583bc14 EJ |
2788 | break; |
2789 | ||
2790 | case OFPACT_STACK_POP: | |
f74e7df7 JP |
2791 | nxm_execute_stack_pop(ofpact_get_STACK_POP(a), flow, wc, |
2792 | &ctx->stack); | |
9583bc14 EJ |
2793 | break; |
2794 | ||
2795 | case OFPACT_PUSH_MPLS: | |
8bfd0fda | 2796 | compose_mpls_push_action(ctx, ofpact_get_PUSH_MPLS(a)); |
9583bc14 EJ |
2797 | break; |
2798 | ||
2799 | case OFPACT_POP_MPLS: | |
8bfd0fda | 2800 | compose_mpls_pop_action(ctx, ofpact_get_POP_MPLS(a)->ethertype); |
9583bc14 EJ |
2801 | break; |
2802 | ||
097d4939 | 2803 | case OFPACT_SET_MPLS_LABEL: |
8bfd0fda BP |
2804 | compose_set_mpls_label_action( |
2805 | ctx, ofpact_get_SET_MPLS_LABEL(a)->label); | |
2806 | break; | |
097d4939 JR |
2807 | |
2808 | case OFPACT_SET_MPLS_TC: | |
8bfd0fda | 2809 | compose_set_mpls_tc_action(ctx, ofpact_get_SET_MPLS_TC(a)->tc); |
097d4939 JR |
2810 | break; |
2811 | ||
9583bc14 | 2812 | case OFPACT_SET_MPLS_TTL: |
8bfd0fda | 2813 | compose_set_mpls_ttl_action(ctx, ofpact_get_SET_MPLS_TTL(a)->ttl); |
9583bc14 EJ |
2814 | break; |
2815 | ||
2816 | case OFPACT_DEC_MPLS_TTL: | |
9cfef3d0 | 2817 | if (compose_dec_mpls_ttl_action(ctx)) { |
ad3efdcb | 2818 | return; |
9583bc14 EJ |
2819 | } |
2820 | break; | |
2821 | ||
2822 | case OFPACT_DEC_TTL: | |
f74e7df7 | 2823 | wc->masks.nw_ttl = 0xff; |
9583bc14 | 2824 | if (compose_dec_ttl(ctx, ofpact_get_DEC_TTL(a))) { |
ad3efdcb | 2825 | return; |
9583bc14 EJ |
2826 | } |
2827 | break; | |
2828 | ||
2829 | case OFPACT_NOTE: | |
2830 | /* Nothing to do. */ | |
2831 | break; | |
2832 | ||
2833 | case OFPACT_MULTIPATH: | |
33bf9176 | 2834 | multipath_execute(ofpact_get_MULTIPATH(a), flow, wc); |
9583bc14 EJ |
2835 | break; |
2836 | ||
2837 | case OFPACT_BUNDLE: | |
9583bc14 EJ |
2838 | xlate_bundle_action(ctx, ofpact_get_BUNDLE(a)); |
2839 | break; | |
2840 | ||
2841 | case OFPACT_OUTPUT_REG: | |
2842 | xlate_output_reg_action(ctx, ofpact_get_OUTPUT_REG(a)); | |
2843 | break; | |
2844 | ||
2845 | case OFPACT_LEARN: | |
2846 | xlate_learn_action(ctx, ofpact_get_LEARN(a)); | |
2847 | break; | |
2848 | ||
2849 | case OFPACT_EXIT: | |
2850 | ctx->exit = true; | |
2851 | break; | |
2852 | ||
2853 | case OFPACT_FIN_TIMEOUT: | |
33bf9176 | 2854 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); |
9583bc14 EJ |
2855 | ctx->xout->has_fin_timeout = true; |
2856 | xlate_fin_timeout(ctx, ofpact_get_FIN_TIMEOUT(a)); | |
2857 | break; | |
2858 | ||
2859 | case OFPACT_CLEAR_ACTIONS: | |
7fdb60a7 SH |
2860 | ofpbuf_clear(&ctx->action_set); |
2861 | break; | |
2862 | ||
2863 | case OFPACT_WRITE_ACTIONS: | |
2864 | xlate_write_actions(ctx, a); | |
9583bc14 EJ |
2865 | break; |
2866 | ||
2867 | case OFPACT_WRITE_METADATA: | |
2868 | metadata = ofpact_get_WRITE_METADATA(a); | |
33bf9176 BP |
2869 | flow->metadata &= ~metadata->mask; |
2870 | flow->metadata |= metadata->metadata & metadata->mask; | |
9583bc14 EJ |
2871 | break; |
2872 | ||
638a19b0 JR |
2873 | case OFPACT_METER: |
2874 | /* Not implemented yet. */ | |
2875 | break; | |
2876 | ||
9583bc14 | 2877 | case OFPACT_GOTO_TABLE: { |
9583bc14 | 2878 | struct ofpact_goto_table *ogt = ofpact_get_GOTO_TABLE(a); |
9583bc14 EJ |
2879 | |
2880 | ovs_assert(ctx->table_id < ogt->table_id); | |
4468099e | 2881 | xlate_table_action(ctx, ctx->xin->flow.in_port.ofp_port, |
6d328fa2 | 2882 | ogt->table_id, true, true); |
9583bc14 EJ |
2883 | break; |
2884 | } | |
2885 | ||
2886 | case OFPACT_SAMPLE: | |
2887 | xlate_sample_action(ctx, ofpact_get_SAMPLE(a)); | |
2888 | break; | |
2889 | } | |
2890 | } | |
9583bc14 EJ |
2891 | } |
2892 | ||
2893 | void | |
2894 | xlate_in_init(struct xlate_in *xin, struct ofproto_dpif *ofproto, | |
2895 | const struct flow *flow, struct rule_dpif *rule, | |
a66733a8 | 2896 | uint16_t tcp_flags, const struct ofpbuf *packet) |
9583bc14 EJ |
2897 | { |
2898 | xin->ofproto = ofproto; | |
2899 | xin->flow = *flow; | |
2900 | xin->packet = packet; | |
2901 | xin->may_learn = packet != NULL; | |
2902 | xin->rule = rule; | |
2903 | xin->ofpacts = NULL; | |
2904 | xin->ofpacts_len = 0; | |
2905 | xin->tcp_flags = tcp_flags; | |
2906 | xin->resubmit_hook = NULL; | |
2907 | xin->report_hook = NULL; | |
2908 | xin->resubmit_stats = NULL; | |
3f207910 | 2909 | xin->skip_wildcards = false; |
9583bc14 EJ |
2910 | } |
2911 | ||
2912 | void | |
2913 | xlate_out_uninit(struct xlate_out *xout) | |
2914 | { | |
2915 | if (xout) { | |
2916 | ofpbuf_uninit(&xout->odp_actions); | |
2917 | } | |
2918 | } | |
2919 | ||
2920 | /* Translates the 'ofpacts_len' bytes of "struct ofpact"s starting at 'ofpacts' | |
2921 | * into datapath actions, using 'ctx', and discards the datapath actions. */ | |
2922 | void | |
2923 | xlate_actions_for_side_effects(struct xlate_in *xin) | |
2924 | { | |
2925 | struct xlate_out xout; | |
2926 | ||
2927 | xlate_actions(xin, &xout); | |
2928 | xlate_out_uninit(&xout); | |
2929 | } | |
2930 | ||
2931 | static void | |
2932 | xlate_report(struct xlate_ctx *ctx, const char *s) | |
2933 | { | |
2934 | if (ctx->xin->report_hook) { | |
4d0acc70 | 2935 | ctx->xin->report_hook(ctx->xin, s, ctx->recurse); |
9583bc14 EJ |
2936 | } |
2937 | } | |
2938 | ||
2939 | void | |
2940 | xlate_out_copy(struct xlate_out *dst, const struct xlate_out *src) | |
2941 | { | |
2942 | dst->wc = src->wc; | |
9583bc14 EJ |
2943 | dst->slow = src->slow; |
2944 | dst->has_learn = src->has_learn; | |
2945 | dst->has_normal = src->has_normal; | |
2946 | dst->has_fin_timeout = src->has_fin_timeout; | |
2947 | dst->nf_output_iface = src->nf_output_iface; | |
2948 | dst->mirrors = src->mirrors; | |
2949 | ||
2950 | ofpbuf_use_stub(&dst->odp_actions, dst->odp_actions_stub, | |
2951 | sizeof dst->odp_actions_stub); | |
1f317cb5 PS |
2952 | ofpbuf_put(&dst->odp_actions, ofpbuf_data(&src->odp_actions), |
2953 | ofpbuf_size(&src->odp_actions)); | |
9583bc14 EJ |
2954 | } |
2955 | \f | |
55954f6e EJ |
2956 | static struct skb_priority_to_dscp * |
2957 | get_skb_priority(const struct xport *xport, uint32_t skb_priority) | |
2958 | { | |
2959 | struct skb_priority_to_dscp *pdscp; | |
2960 | uint32_t hash; | |
2961 | ||
2962 | hash = hash_int(skb_priority, 0); | |
2963 | HMAP_FOR_EACH_IN_BUCKET (pdscp, hmap_node, hash, &xport->skb_priorities) { | |
2964 | if (pdscp->skb_priority == skb_priority) { | |
2965 | return pdscp; | |
2966 | } | |
2967 | } | |
2968 | return NULL; | |
2969 | } | |
2970 | ||
2971 | static bool | |
2972 | dscp_from_skb_priority(const struct xport *xport, uint32_t skb_priority, | |
2973 | uint8_t *dscp) | |
2974 | { | |
2975 | struct skb_priority_to_dscp *pdscp = get_skb_priority(xport, skb_priority); | |
2976 | *dscp = pdscp ? pdscp->dscp : 0; | |
2977 | return pdscp != NULL; | |
2978 | } | |
2979 | ||
2980 | static void | |
2981 | clear_skb_priorities(struct xport *xport) | |
2982 | { | |
2983 | struct skb_priority_to_dscp *pdscp, *next; | |
2984 | ||
2985 | HMAP_FOR_EACH_SAFE (pdscp, next, hmap_node, &xport->skb_priorities) { | |
2986 | hmap_remove(&xport->skb_priorities, &pdscp->hmap_node); | |
2987 | free(pdscp); | |
2988 | } | |
2989 | } | |
2990 | ||
ce4a6b76 BP |
2991 | static bool |
2992 | actions_output_to_local_port(const struct xlate_ctx *ctx) | |
2993 | { | |
46c88433 | 2994 | odp_port_t local_odp_port = ofp_port_to_odp_port(ctx->xbridge, OFPP_LOCAL); |
ce4a6b76 BP |
2995 | const struct nlattr *a; |
2996 | unsigned int left; | |
2997 | ||
1f317cb5 PS |
2998 | NL_ATTR_FOR_EACH_UNSAFE (a, left, ofpbuf_data(&ctx->xout->odp_actions), |
2999 | ofpbuf_size(&ctx->xout->odp_actions)) { | |
ce4a6b76 BP |
3000 | if (nl_attr_type(a) == OVS_ACTION_ATTR_OUTPUT |
3001 | && nl_attr_get_odp_port(a) == local_odp_port) { | |
3002 | return true; | |
3003 | } | |
3004 | } | |
3005 | return false; | |
3006 | } | |
9583bc14 | 3007 | |
91d6cd12 AW |
3008 | /* Thread safe call to xlate_actions__(). */ |
3009 | void | |
3010 | xlate_actions(struct xlate_in *xin, struct xlate_out *xout) | |
6a4d3ab5 | 3011 | OVS_EXCLUDED(xlate_rwlock) |
91d6cd12 AW |
3012 | { |
3013 | ovs_rwlock_rdlock(&xlate_rwlock); | |
3014 | xlate_actions__(xin, xout); | |
3015 | ovs_rwlock_unlock(&xlate_rwlock); | |
3016 | } | |
3017 | ||
9583bc14 | 3018 | /* Translates the 'ofpacts_len' bytes of "struct ofpacts" starting at 'ofpacts' |
56450a41 BP |
3019 | * into datapath actions in 'odp_actions', using 'ctx'. |
3020 | * | |
3021 | * The caller must take responsibility for eventually freeing 'xout', with | |
3022 | * xlate_out_uninit(). */ | |
91d6cd12 AW |
3023 | static void |
3024 | xlate_actions__(struct xlate_in *xin, struct xlate_out *xout) | |
3025 | OVS_REQ_RDLOCK(xlate_rwlock) | |
9583bc14 | 3026 | { |
33bf9176 BP |
3027 | struct flow_wildcards *wc = &xout->wc; |
3028 | struct flow *flow = &xin->flow; | |
10c44245 | 3029 | struct rule_dpif *rule = NULL; |
33bf9176 | 3030 | |
6f00e29b | 3031 | struct rule_actions *actions = NULL; |
9583bc14 EJ |
3032 | enum slow_path_reason special; |
3033 | const struct ofpact *ofpacts; | |
46c88433 | 3034 | struct xport *in_port; |
9583bc14 EJ |
3035 | struct flow orig_flow; |
3036 | struct xlate_ctx ctx; | |
3037 | size_t ofpacts_len; | |
62a7cc71 | 3038 | bool tnl_may_send; |
c56fac1b | 3039 | bool is_icmp; |
9583bc14 | 3040 | |
46c88433 | 3041 | COVERAGE_INC(xlate_actions); |
9583bc14 EJ |
3042 | |
3043 | /* Flow initialization rules: | |
3044 | * - 'base_flow' must match the kernel's view of the packet at the | |
3045 | * time that action processing starts. 'flow' represents any | |
3046 | * transformations we wish to make through actions. | |
3047 | * - By default 'base_flow' and 'flow' are the same since the input | |
3048 | * packet matches the output before any actions are applied. | |
3049 | * - When using VLAN splinters, 'base_flow''s VLAN is set to the value | |
3050 | * of the received packet as seen by the kernel. If we later output | |
3051 | * to another device without any modifications this will cause us to | |
3052 | * insert a new tag since the original one was stripped off by the | |
3053 | * VLAN device. | |
3054 | * - Tunnel metadata as received is retained in 'flow'. This allows | |
3055 | * tunnel metadata matching also in later tables. | |
3056 | * Since a kernel action for setting the tunnel metadata will only be | |
3057 | * generated with actual tunnel output, changing the tunnel metadata | |
3058 | * values in 'flow' (such as tun_id) will only have effect with a later | |
3059 | * tunnel output action. | |
3060 | * - Tunnel 'base_flow' is completely cleared since that is what the | |
3061 | * kernel does. If we wish to maintain the original values an action | |
3062 | * needs to be generated. */ | |
3063 | ||
3064 | ctx.xin = xin; | |
3065 | ctx.xout = xout; | |
46c88433 EJ |
3066 | ctx.xout->slow = 0; |
3067 | ctx.xout->has_learn = false; | |
3068 | ctx.xout->has_normal = false; | |
3069 | ctx.xout->has_fin_timeout = false; | |
3070 | ctx.xout->nf_output_iface = NF_OUT_DROP; | |
3071 | ctx.xout->mirrors = 0; | |
3072 | ofpbuf_use_stub(&ctx.xout->odp_actions, ctx.xout->odp_actions_stub, | |
3073 | sizeof ctx.xout->odp_actions_stub); | |
3074 | ofpbuf_reserve(&ctx.xout->odp_actions, NL_A_U32_SIZE); | |
3075 | ||
3076 | ctx.xbridge = xbridge_lookup(xin->ofproto); | |
3077 | if (!ctx.xbridge) { | |
dc24a00f | 3078 | goto out; |
46c88433 | 3079 | } |
9583bc14 | 3080 | |
9583bc14 EJ |
3081 | ctx.rule = xin->rule; |
3082 | ||
33bf9176 | 3083 | ctx.base_flow = *flow; |
9583bc14 | 3084 | memset(&ctx.base_flow.tunnel, 0, sizeof ctx.base_flow.tunnel); |
33bf9176 | 3085 | ctx.orig_tunnel_ip_dst = flow->tunnel.ip_dst; |
9583bc14 | 3086 | |
33bf9176 BP |
3087 | flow_wildcards_init_catchall(wc); |
3088 | memset(&wc->masks.in_port, 0xff, sizeof wc->masks.in_port); | |
1dd35f8a | 3089 | memset(&wc->masks.skb_priority, 0xff, sizeof wc->masks.skb_priority); |
7431e171 | 3090 | memset(&wc->masks.dl_type, 0xff, sizeof wc->masks.dl_type); |
0934ebba BP |
3091 | if (is_ip_any(flow)) { |
3092 | wc->masks.nw_frag |= FLOW_NW_FRAG_MASK; | |
3093 | } | |
c56fac1b | 3094 | is_icmp = is_icmpv4(flow) || is_icmpv6(flow); |
9583bc14 | 3095 | |
62a7cc71 | 3096 | tnl_may_send = tnl_xlate_init(&ctx.base_flow, flow, wc); |
ce3955be | 3097 | if (ctx.xbridge->netflow) { |
9b658910 | 3098 | netflow_mask_wc(flow, wc); |
9583bc14 EJ |
3099 | } |
3100 | ||
9583bc14 | 3101 | ctx.recurse = 0; |
98b07853 | 3102 | ctx.resubmits = 0; |
5a070238 | 3103 | ctx.in_group = false; |
33bf9176 | 3104 | ctx.orig_skb_priority = flow->skb_priority; |
9583bc14 EJ |
3105 | ctx.table_id = 0; |
3106 | ctx.exit = false; | |
3107 | ||
10c44245 | 3108 | if (!xin->ofpacts && !ctx.rule) { |
6d328fa2 SH |
3109 | ctx.table_id = rule_dpif_lookup(ctx.xbridge->ofproto, flow, |
3110 | !xin->skip_wildcards ? wc : NULL, | |
3111 | &rule); | |
10c44245 EJ |
3112 | if (ctx.xin->resubmit_stats) { |
3113 | rule_dpif_credit_stats(rule, ctx.xin->resubmit_stats); | |
3114 | } | |
3115 | ctx.rule = rule; | |
3116 | } | |
ee1afdd5 | 3117 | xout->fail_open = ctx.rule && rule_dpif_is_fail_open(ctx.rule); |
adcf00ba | 3118 | xout->use_recirc = false; |
10c44245 | 3119 | |
9583bc14 EJ |
3120 | if (xin->ofpacts) { |
3121 | ofpacts = xin->ofpacts; | |
3122 | ofpacts_len = xin->ofpacts_len; | |
10c44245 EJ |
3123 | } else if (ctx.rule) { |
3124 | actions = rule_dpif_get_actions(ctx.rule); | |
6f00e29b BP |
3125 | ofpacts = actions->ofpacts; |
3126 | ofpacts_len = actions->ofpacts_len; | |
9583bc14 | 3127 | } else { |
428b2edd | 3128 | OVS_NOT_REACHED(); |
9583bc14 EJ |
3129 | } |
3130 | ||
3131 | ofpbuf_use_stub(&ctx.stack, ctx.init_stack, sizeof ctx.init_stack); | |
7fdb60a7 SH |
3132 | ofpbuf_use_stub(&ctx.action_set, |
3133 | ctx.action_set_stub, sizeof ctx.action_set_stub); | |
9583bc14 | 3134 | |
ade6ad9c | 3135 | if (mbridge_has_mirrors(ctx.xbridge->mbridge)) { |
9583bc14 EJ |
3136 | /* Do this conditionally because the copy is expensive enough that it |
3137 | * shows up in profiles. */ | |
33bf9176 | 3138 | orig_flow = *flow; |
9583bc14 EJ |
3139 | } |
3140 | ||
33bf9176 | 3141 | if (flow->nw_frag & FLOW_NW_FRAG_ANY) { |
46c88433 | 3142 | switch (ctx.xbridge->frag) { |
9583bc14 EJ |
3143 | case OFPC_FRAG_NORMAL: |
3144 | /* We must pretend that transport ports are unavailable. */ | |
33bf9176 BP |
3145 | flow->tp_src = ctx.base_flow.tp_src = htons(0); |
3146 | flow->tp_dst = ctx.base_flow.tp_dst = htons(0); | |
9583bc14 EJ |
3147 | break; |
3148 | ||
3149 | case OFPC_FRAG_DROP: | |
dc24a00f | 3150 | goto out; |
9583bc14 EJ |
3151 | |
3152 | case OFPC_FRAG_REASM: | |
428b2edd | 3153 | OVS_NOT_REACHED(); |
9583bc14 EJ |
3154 | |
3155 | case OFPC_FRAG_NX_MATCH: | |
3156 | /* Nothing to do. */ | |
3157 | break; | |
3158 | ||
3159 | case OFPC_INVALID_TTL_TO_CONTROLLER: | |
428b2edd | 3160 | OVS_NOT_REACHED(); |
9583bc14 EJ |
3161 | } |
3162 | } | |
3163 | ||
46c88433 | 3164 | in_port = get_ofp_port(ctx.xbridge, flow->in_port.ofp_port); |
d6fc5f57 EJ |
3165 | if (in_port && in_port->is_tunnel && ctx.xin->resubmit_stats) { |
3166 | netdev_vport_inc_rx(in_port->netdev, ctx.xin->resubmit_stats); | |
3167 | if (in_port->bfd) { | |
3168 | bfd_account_rx(in_port->bfd, ctx.xin->resubmit_stats); | |
3169 | } | |
3170 | } | |
3171 | ||
642dc74d | 3172 | special = process_special(&ctx, flow, in_port, ctx.xin->packet); |
9583bc14 | 3173 | if (special) { |
04594cd5 | 3174 | ctx.xout->slow |= special; |
9583bc14 | 3175 | } else { |
9583bc14 | 3176 | size_t sample_actions_len; |
9583bc14 | 3177 | |
4e022ec0 | 3178 | if (flow->in_port.ofp_port |
46c88433 EJ |
3179 | != vsp_realdev_to_vlandev(ctx.xbridge->ofproto, |
3180 | flow->in_port.ofp_port, | |
33bf9176 | 3181 | flow->vlan_tci)) { |
9583bc14 EJ |
3182 | ctx.base_flow.vlan_tci = 0; |
3183 | } | |
3184 | ||
3185 | add_sflow_action(&ctx); | |
3186 | add_ipfix_action(&ctx); | |
1f317cb5 | 3187 | sample_actions_len = ofpbuf_size(&ctx.xout->odp_actions); |
9583bc14 | 3188 | |
62a7cc71 | 3189 | if (tnl_may_send && (!in_port || may_receive(in_port, &ctx))) { |
9583bc14 EJ |
3190 | do_xlate_actions(ofpacts, ofpacts_len, &ctx); |
3191 | ||
3192 | /* We've let OFPP_NORMAL and the learning action look at the | |
3193 | * packet, so drop it now if forwarding is disabled. */ | |
9d189a50 | 3194 | if (in_port && !xport_stp_forward_state(in_port)) { |
1f317cb5 | 3195 | ofpbuf_set_size(&ctx.xout->odp_actions, sample_actions_len); |
9583bc14 EJ |
3196 | } |
3197 | } | |
3198 | ||
1f317cb5 | 3199 | if (ofpbuf_size(&ctx.action_set)) { |
7fdb60a7 SH |
3200 | xlate_action_set(&ctx); |
3201 | } | |
3202 | ||
46c88433 | 3203 | if (ctx.xbridge->has_in_band |
ce4a6b76 BP |
3204 | && in_band_must_output_to_local_port(flow) |
3205 | && !actions_output_to_local_port(&ctx)) { | |
9583bc14 EJ |
3206 | compose_output_action(&ctx, OFPP_LOCAL); |
3207 | } | |
aaa0fbae EJ |
3208 | |
3209 | fix_sflow_action(&ctx); | |
3210 | ||
46c88433 | 3211 | if (mbridge_has_mirrors(ctx.xbridge->mbridge)) { |
9583bc14 EJ |
3212 | add_mirror_actions(&ctx, &orig_flow); |
3213 | } | |
9583bc14 EJ |
3214 | } |
3215 | ||
1f317cb5 | 3216 | if (nl_attr_oversized(ofpbuf_size(&ctx.xout->odp_actions))) { |
542024c4 | 3217 | /* These datapath actions are too big for a Netlink attribute, so we |
0f032e95 BP |
3218 | * can't hand them to the kernel directly. dpif_execute() can execute |
3219 | * them one by one with help, so just mark the result as SLOW_ACTION to | |
3220 | * prevent the flow from being installed. */ | |
3221 | COVERAGE_INC(xlate_actions_oversize); | |
3222 | ctx.xout->slow |= SLOW_ACTION; | |
542024c4 BP |
3223 | } |
3224 | ||
d6fc5f57 EJ |
3225 | if (ctx.xin->resubmit_stats) { |
3226 | mirror_update_stats(ctx.xbridge->mbridge, xout->mirrors, | |
3227 | ctx.xin->resubmit_stats->n_packets, | |
3228 | ctx.xin->resubmit_stats->n_bytes); | |
3229 | ||
3230 | if (ctx.xbridge->netflow) { | |
3231 | const struct ofpact *ofpacts; | |
3232 | size_t ofpacts_len; | |
3233 | ||
3234 | ofpacts_len = actions->ofpacts_len; | |
3235 | ofpacts = actions->ofpacts; | |
3236 | if (ofpacts_len == 0 | |
3237 | || ofpacts->type != OFPACT_CONTROLLER | |
3238 | || ofpact_next(ofpacts) < ofpact_end(ofpacts, ofpacts_len)) { | |
3239 | /* Only update netflow if we don't have controller flow. We don't | |
3240 | * report NetFlow expiration messages for such facets because they | |
3241 | * are just part of the control logic for the network, not real | |
3242 | * traffic. */ | |
3243 | netflow_flow_update(ctx.xbridge->netflow, flow, | |
3244 | xout->nf_output_iface, | |
3245 | ctx.xin->resubmit_stats); | |
3246 | } | |
3247 | } | |
3248 | } | |
3249 | ||
9583bc14 | 3250 | ofpbuf_uninit(&ctx.stack); |
7fdb60a7 | 3251 | ofpbuf_uninit(&ctx.action_set); |
9583bc14 EJ |
3252 | |
3253 | /* Clear the metadata and register wildcard masks, because we won't | |
3254 | * use non-header fields as part of the cache. */ | |
c11c6faa | 3255 | flow_wildcards_clear_non_packet_fields(wc); |
dc24a00f | 3256 | |
c56fac1b BP |
3257 | /* ICMPv4 and ICMPv6 have 8-bit "type" and "code" fields. struct flow uses |
3258 | * the low 8 bits of the 16-bit tp_src and tp_dst members to represent | |
3259 | * these fields. The datapath interface, on the other hand, represents | |
3260 | * them with just 8 bits each. This means that if the high 8 bits of the | |
3261 | * masks for these fields somehow become set, then they will get chopped | |
3262 | * off by a round trip through the datapath, and revalidation will spot | |
3263 | * that as an inconsistency and delete the flow. Avoid the problem here by | |
3264 | * making sure that only the low 8 bits of either field can be unwildcarded | |
3265 | * for ICMP. | |
3266 | */ | |
3267 | if (is_icmp) { | |
3268 | wc->masks.tp_src &= htons(UINT8_MAX); | |
3269 | wc->masks.tp_dst &= htons(UINT8_MAX); | |
3270 | } | |
3271 | ||
dc24a00f | 3272 | out: |
10c44245 | 3273 | rule_dpif_unref(rule); |
91d6cd12 AW |
3274 | } |
3275 | ||
3276 | /* Sends 'packet' out 'ofport'. | |
3277 | * May modify 'packet'. | |
3278 | * Returns 0 if successful, otherwise a positive errno value. */ | |
3279 | int | |
3280 | xlate_send_packet(const struct ofport_dpif *ofport, struct ofpbuf *packet) | |
3281 | { | |
91d6cd12 | 3282 | struct xport *xport; |
91d6cd12 | 3283 | struct ofpact_output output; |
91d6cd12 | 3284 | struct flow flow; |
91d6cd12 | 3285 | |
91d6cd12 AW |
3286 | ofpact_init(&output.ofpact, OFPACT_OUTPUT, sizeof output); |
3287 | /* Use OFPP_NONE as the in_port to avoid special packet processing. */ | |
b5e7e61a AZ |
3288 | flow_extract(packet, NULL, &flow); |
3289 | flow.in_port.ofp_port = OFPP_NONE; | |
91d6cd12 AW |
3290 | |
3291 | ovs_rwlock_rdlock(&xlate_rwlock); | |
3292 | xport = xport_lookup(ofport); | |
3293 | if (!xport) { | |
91d6cd12 | 3294 | ovs_rwlock_unlock(&xlate_rwlock); |
02ea2703 | 3295 | return EINVAL; |
91d6cd12 | 3296 | } |
91d6cd12 AW |
3297 | output.port = xport->ofp_port; |
3298 | output.max_len = 0; | |
dc24a00f | 3299 | ovs_rwlock_unlock(&xlate_rwlock); |
e491a67a YT |
3300 | |
3301 | return ofproto_dpif_execute_actions(xport->xbridge->ofproto, &flow, NULL, | |
3302 | &output.ofpact, sizeof output, | |
3303 | packet); | |
9583bc14 | 3304 | } |