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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 | 194 | |
92c08f09 SH |
195 | bool use_recirc; /* Should generate recirc? */ |
196 | struct xlate_recirc recirc; /* Information used for generating | |
197 | * recirculation actions */ | |
198 | ||
7fdb60a7 SH |
199 | /* OpenFlow 1.1+ action set. |
200 | * | |
201 | * 'action_set' accumulates "struct ofpact"s added by OFPACT_WRITE_ACTIONS. | |
202 | * When translation is otherwise complete, ofpacts_execute_action_set() | |
203 | * converts it to a set of "struct ofpact"s that can be translated into | |
204 | * datapath actions. */ | |
205 | struct ofpbuf action_set; /* Action set. */ | |
206 | uint64_t action_set_stub[1024 / 8]; | |
4d0acc70 EJ |
207 | }; |
208 | ||
9583bc14 EJ |
209 | /* A controller may use OFPP_NONE as the ingress port to indicate that |
210 | * it did not arrive on a "real" port. 'ofpp_none_bundle' exists for | |
211 | * when an input bundle is needed for validation (e.g., mirroring or | |
212 | * OFPP_NORMAL processing). It is not connected to an 'ofproto' or have | |
3548d242 BP |
213 | * any 'port' structs, so care must be taken when dealing with it. */ |
214 | static struct xbundle ofpp_none_bundle = { | |
215 | .name = "OFPP_NONE", | |
216 | .vlan_mode = PORT_VLAN_TRUNK | |
217 | }; | |
9583bc14 | 218 | |
55954f6e EJ |
219 | /* Node in 'xport''s 'skb_priorities' map. Used to maintain a map from |
220 | * 'priority' (the datapath's term for QoS queue) to the dscp bits which all | |
221 | * traffic egressing the 'ofport' with that priority should be marked with. */ | |
222 | struct skb_priority_to_dscp { | |
223 | struct hmap_node hmap_node; /* Node in 'ofport_dpif''s 'skb_priorities'. */ | |
224 | uint32_t skb_priority; /* Priority of this queue (see struct flow). */ | |
225 | ||
226 | uint8_t dscp; /* DSCP bits to mark outgoing traffic with. */ | |
227 | }; | |
228 | ||
b256dc52 JS |
229 | enum xc_type { |
230 | XC_RULE, | |
231 | XC_BOND, | |
232 | XC_NETDEV, | |
233 | XC_NETFLOW, | |
234 | XC_MIRROR, | |
235 | XC_LEARN, | |
236 | XC_NORMAL, | |
237 | XC_FIN_TIMEOUT, | |
238 | }; | |
239 | ||
240 | /* xlate_cache entries hold enough information to perform the side effects of | |
241 | * xlate_actions() for a rule, without needing to perform rule translation | |
242 | * from scratch. The primary usage of these is to submit statistics to objects | |
243 | * that a flow relates to, although they may be used for other effects as well | |
244 | * (for instance, refreshing hard timeouts for learned flows). */ | |
245 | struct xc_entry { | |
246 | enum xc_type type; | |
247 | union { | |
248 | struct rule_dpif *rule; | |
249 | struct { | |
250 | struct netdev *tx; | |
251 | struct netdev *rx; | |
252 | struct bfd *bfd; | |
253 | } dev; | |
254 | struct { | |
255 | struct netflow *netflow; | |
256 | struct flow *flow; | |
257 | ofp_port_t iface; | |
258 | } nf; | |
259 | struct { | |
260 | struct mbridge *mbridge; | |
261 | mirror_mask_t mirrors; | |
262 | } mirror; | |
263 | struct { | |
264 | struct bond *bond; | |
265 | struct flow *flow; | |
266 | uint16_t vid; | |
267 | } bond; | |
268 | struct { | |
269 | struct ofproto_dpif *ofproto; | |
270 | struct rule_dpif *rule; | |
271 | } learn; | |
272 | struct { | |
273 | struct ofproto_dpif *ofproto; | |
274 | struct flow *flow; | |
275 | int vlan; | |
276 | } normal; | |
277 | struct { | |
278 | struct rule_dpif *rule; | |
279 | uint16_t idle; | |
280 | uint16_t hard; | |
281 | } fin; | |
282 | } u; | |
283 | }; | |
284 | ||
285 | #define XC_ENTRY_FOR_EACH(entry, entries, xcache) \ | |
286 | entries = xcache->entries; \ | |
287 | for (entry = ofpbuf_try_pull(&entries, sizeof *entry); \ | |
288 | entry; \ | |
289 | entry = ofpbuf_try_pull(&entries, sizeof *entry)) | |
290 | ||
291 | struct xlate_cache { | |
292 | struct ofpbuf entries; | |
293 | }; | |
294 | ||
46c88433 EJ |
295 | static struct hmap xbridges = HMAP_INITIALIZER(&xbridges); |
296 | static struct hmap xbundles = HMAP_INITIALIZER(&xbundles); | |
297 | static struct hmap xports = HMAP_INITIALIZER(&xports); | |
298 | ||
299 | static bool may_receive(const struct xport *, struct xlate_ctx *); | |
9583bc14 EJ |
300 | static void do_xlate_actions(const struct ofpact *, size_t ofpacts_len, |
301 | struct xlate_ctx *); | |
91d6cd12 AW |
302 | static void xlate_actions__(struct xlate_in *, struct xlate_out *) |
303 | OVS_REQ_RDLOCK(xlate_rwlock); | |
adcf00ba AZ |
304 | static void xlate_normal(struct xlate_ctx *); |
305 | static void xlate_report(struct xlate_ctx *, const char *); | |
6d328fa2 SH |
306 | static void xlate_table_action(struct xlate_ctx *, ofp_port_t in_port, |
307 | uint8_t table_id, bool may_packet_in, | |
308 | bool honor_table_miss); | |
46c88433 EJ |
309 | static bool input_vid_is_valid(uint16_t vid, struct xbundle *, bool warn); |
310 | static uint16_t input_vid_to_vlan(const struct xbundle *, uint16_t vid); | |
311 | static void output_normal(struct xlate_ctx *, const struct xbundle *, | |
9583bc14 | 312 | uint16_t vlan); |
4e022ec0 | 313 | static void compose_output_action(struct xlate_ctx *, ofp_port_t ofp_port); |
9583bc14 | 314 | |
46c88433 EJ |
315 | static struct xbridge *xbridge_lookup(const struct ofproto_dpif *); |
316 | static struct xbundle *xbundle_lookup(const struct ofbundle *); | |
5e6af486 | 317 | static struct xport *xport_lookup(const struct ofport_dpif *); |
46c88433 | 318 | static struct xport *get_ofp_port(const struct xbridge *, ofp_port_t ofp_port); |
55954f6e EJ |
319 | static struct skb_priority_to_dscp *get_skb_priority(const struct xport *, |
320 | uint32_t skb_priority); | |
321 | static void clear_skb_priorities(struct xport *); | |
322 | static bool dscp_from_skb_priority(const struct xport *, uint32_t skb_priority, | |
323 | uint8_t *dscp); | |
46c88433 | 324 | |
b256dc52 JS |
325 | static struct xc_entry *xlate_cache_add_entry(struct xlate_cache *xc, |
326 | enum xc_type type); | |
327 | ||
46c88433 EJ |
328 | void |
329 | xlate_ofproto_set(struct ofproto_dpif *ofproto, const char *name, | |
ec89fc6f EJ |
330 | struct dpif *dpif, struct rule_dpif *miss_rule, |
331 | struct rule_dpif *no_packet_in_rule, | |
332 | const struct mac_learning *ml, struct stp *stp, | |
333 | const struct mbridge *mbridge, | |
46c88433 | 334 | const struct dpif_sflow *sflow, |
ce3955be EJ |
335 | const struct dpif_ipfix *ipfix, |
336 | const struct netflow *netflow, enum ofp_config_flags frag, | |
4b97b70d | 337 | bool forward_bpdu, bool has_in_band, |
adcf00ba | 338 | bool enable_recirc, |
8bfd0fda BP |
339 | bool variable_length_userdata, |
340 | size_t max_mpls_depth) | |
46c88433 EJ |
341 | { |
342 | struct xbridge *xbridge = xbridge_lookup(ofproto); | |
343 | ||
344 | if (!xbridge) { | |
345 | xbridge = xzalloc(sizeof *xbridge); | |
346 | xbridge->ofproto = ofproto; | |
347 | ||
348 | hmap_insert(&xbridges, &xbridge->hmap_node, hash_pointer(ofproto, 0)); | |
349 | hmap_init(&xbridge->xports); | |
350 | list_init(&xbridge->xbundles); | |
351 | } | |
352 | ||
353 | if (xbridge->ml != ml) { | |
354 | mac_learning_unref(xbridge->ml); | |
355 | xbridge->ml = mac_learning_ref(ml); | |
356 | } | |
357 | ||
358 | if (xbridge->mbridge != mbridge) { | |
359 | mbridge_unref(xbridge->mbridge); | |
360 | xbridge->mbridge = mbridge_ref(mbridge); | |
361 | } | |
362 | ||
363 | if (xbridge->sflow != sflow) { | |
364 | dpif_sflow_unref(xbridge->sflow); | |
365 | xbridge->sflow = dpif_sflow_ref(sflow); | |
366 | } | |
367 | ||
368 | if (xbridge->ipfix != ipfix) { | |
369 | dpif_ipfix_unref(xbridge->ipfix); | |
370 | xbridge->ipfix = dpif_ipfix_ref(ipfix); | |
371 | } | |
372 | ||
9d189a50 EJ |
373 | if (xbridge->stp != stp) { |
374 | stp_unref(xbridge->stp); | |
375 | xbridge->stp = stp_ref(stp); | |
376 | } | |
377 | ||
ce3955be EJ |
378 | if (xbridge->netflow != netflow) { |
379 | netflow_unref(xbridge->netflow); | |
380 | xbridge->netflow = netflow_ref(netflow); | |
381 | } | |
382 | ||
46c88433 EJ |
383 | free(xbridge->name); |
384 | xbridge->name = xstrdup(name); | |
385 | ||
89a8a7f0 | 386 | xbridge->dpif = dpif; |
46c88433 EJ |
387 | xbridge->forward_bpdu = forward_bpdu; |
388 | xbridge->has_in_band = has_in_band; | |
46c88433 | 389 | xbridge->frag = frag; |
ec89fc6f EJ |
390 | xbridge->miss_rule = miss_rule; |
391 | xbridge->no_packet_in_rule = no_packet_in_rule; | |
adcf00ba | 392 | xbridge->enable_recirc = enable_recirc; |
4b97b70d | 393 | xbridge->variable_length_userdata = variable_length_userdata; |
8bfd0fda | 394 | xbridge->max_mpls_depth = max_mpls_depth; |
46c88433 EJ |
395 | } |
396 | ||
397 | void | |
398 | xlate_remove_ofproto(struct ofproto_dpif *ofproto) | |
399 | { | |
400 | struct xbridge *xbridge = xbridge_lookup(ofproto); | |
401 | struct xbundle *xbundle, *next_xbundle; | |
402 | struct xport *xport, *next_xport; | |
403 | ||
404 | if (!xbridge) { | |
405 | return; | |
406 | } | |
407 | ||
408 | HMAP_FOR_EACH_SAFE (xport, next_xport, ofp_node, &xbridge->xports) { | |
409 | xlate_ofport_remove(xport->ofport); | |
410 | } | |
411 | ||
412 | LIST_FOR_EACH_SAFE (xbundle, next_xbundle, list_node, &xbridge->xbundles) { | |
413 | xlate_bundle_remove(xbundle->ofbundle); | |
414 | } | |
415 | ||
416 | hmap_remove(&xbridges, &xbridge->hmap_node); | |
795cc5c1 EJ |
417 | mac_learning_unref(xbridge->ml); |
418 | mbridge_unref(xbridge->mbridge); | |
419 | dpif_sflow_unref(xbridge->sflow); | |
420 | dpif_ipfix_unref(xbridge->ipfix); | |
421 | stp_unref(xbridge->stp); | |
422 | hmap_destroy(&xbridge->xports); | |
46c88433 EJ |
423 | free(xbridge->name); |
424 | free(xbridge); | |
425 | } | |
426 | ||
427 | void | |
428 | xlate_bundle_set(struct ofproto_dpif *ofproto, struct ofbundle *ofbundle, | |
429 | const char *name, enum port_vlan_mode vlan_mode, int vlan, | |
430 | unsigned long *trunks, bool use_priority_tags, | |
431 | const struct bond *bond, const struct lacp *lacp, | |
432 | bool floodable) | |
433 | { | |
434 | struct xbundle *xbundle = xbundle_lookup(ofbundle); | |
435 | ||
436 | if (!xbundle) { | |
437 | xbundle = xzalloc(sizeof *xbundle); | |
438 | xbundle->ofbundle = ofbundle; | |
439 | xbundle->xbridge = xbridge_lookup(ofproto); | |
440 | ||
441 | hmap_insert(&xbundles, &xbundle->hmap_node, hash_pointer(ofbundle, 0)); | |
442 | list_insert(&xbundle->xbridge->xbundles, &xbundle->list_node); | |
443 | list_init(&xbundle->xports); | |
444 | } | |
445 | ||
446 | ovs_assert(xbundle->xbridge); | |
447 | ||
448 | free(xbundle->name); | |
449 | xbundle->name = xstrdup(name); | |
450 | ||
451 | xbundle->vlan_mode = vlan_mode; | |
452 | xbundle->vlan = vlan; | |
453 | xbundle->trunks = trunks; | |
454 | xbundle->use_priority_tags = use_priority_tags; | |
455 | xbundle->floodable = floodable; | |
456 | ||
457 | if (xbundle->bond != bond) { | |
458 | bond_unref(xbundle->bond); | |
459 | xbundle->bond = bond_ref(bond); | |
460 | } | |
461 | ||
462 | if (xbundle->lacp != lacp) { | |
463 | lacp_unref(xbundle->lacp); | |
464 | xbundle->lacp = lacp_ref(lacp); | |
465 | } | |
466 | } | |
467 | ||
468 | void | |
469 | xlate_bundle_remove(struct ofbundle *ofbundle) | |
470 | { | |
471 | struct xbundle *xbundle = xbundle_lookup(ofbundle); | |
472 | struct xport *xport, *next; | |
473 | ||
474 | if (!xbundle) { | |
475 | return; | |
476 | } | |
477 | ||
478 | LIST_FOR_EACH_SAFE (xport, next, bundle_node, &xbundle->xports) { | |
479 | list_remove(&xport->bundle_node); | |
480 | xport->xbundle = NULL; | |
481 | } | |
482 | ||
483 | hmap_remove(&xbundles, &xbundle->hmap_node); | |
484 | list_remove(&xbundle->list_node); | |
485 | bond_unref(xbundle->bond); | |
486 | lacp_unref(xbundle->lacp); | |
487 | free(xbundle->name); | |
488 | free(xbundle); | |
489 | } | |
490 | ||
491 | void | |
492 | xlate_ofport_set(struct ofproto_dpif *ofproto, struct ofbundle *ofbundle, | |
493 | struct ofport_dpif *ofport, ofp_port_t ofp_port, | |
494 | odp_port_t odp_port, const struct netdev *netdev, | |
495 | const struct cfm *cfm, const struct bfd *bfd, | |
9d189a50 | 496 | struct ofport_dpif *peer, int stp_port_no, |
55954f6e | 497 | const struct ofproto_port_queue *qdscp_list, size_t n_qdscp, |
dd8cd4b4 SH |
498 | enum ofputil_port_config config, |
499 | enum ofputil_port_state state, bool is_tunnel, | |
9d189a50 | 500 | bool may_enable) |
46c88433 EJ |
501 | { |
502 | struct xport *xport = xport_lookup(ofport); | |
55954f6e | 503 | size_t i; |
46c88433 EJ |
504 | |
505 | if (!xport) { | |
506 | xport = xzalloc(sizeof *xport); | |
507 | xport->ofport = ofport; | |
508 | xport->xbridge = xbridge_lookup(ofproto); | |
509 | xport->ofp_port = ofp_port; | |
510 | ||
55954f6e | 511 | hmap_init(&xport->skb_priorities); |
46c88433 EJ |
512 | hmap_insert(&xports, &xport->hmap_node, hash_pointer(ofport, 0)); |
513 | hmap_insert(&xport->xbridge->xports, &xport->ofp_node, | |
514 | hash_ofp_port(xport->ofp_port)); | |
515 | } | |
516 | ||
517 | ovs_assert(xport->ofp_port == ofp_port); | |
518 | ||
519 | xport->config = config; | |
dd8cd4b4 | 520 | xport->state = state; |
9d189a50 | 521 | xport->stp_port_no = stp_port_no; |
46c88433 EJ |
522 | xport->is_tunnel = is_tunnel; |
523 | xport->may_enable = may_enable; | |
524 | xport->odp_port = odp_port; | |
525 | ||
526 | if (xport->netdev != netdev) { | |
527 | netdev_close(xport->netdev); | |
528 | xport->netdev = netdev_ref(netdev); | |
529 | } | |
530 | ||
531 | if (xport->cfm != cfm) { | |
532 | cfm_unref(xport->cfm); | |
533 | xport->cfm = cfm_ref(cfm); | |
534 | } | |
535 | ||
536 | if (xport->bfd != bfd) { | |
537 | bfd_unref(xport->bfd); | |
538 | xport->bfd = bfd_ref(bfd); | |
539 | } | |
540 | ||
541 | if (xport->peer) { | |
542 | xport->peer->peer = NULL; | |
543 | } | |
5e6af486 | 544 | xport->peer = xport_lookup(peer); |
46c88433 EJ |
545 | if (xport->peer) { |
546 | xport->peer->peer = xport; | |
547 | } | |
548 | ||
549 | if (xport->xbundle) { | |
550 | list_remove(&xport->bundle_node); | |
551 | } | |
5e6af486 | 552 | xport->xbundle = xbundle_lookup(ofbundle); |
46c88433 EJ |
553 | if (xport->xbundle) { |
554 | list_insert(&xport->xbundle->xports, &xport->bundle_node); | |
555 | } | |
55954f6e EJ |
556 | |
557 | clear_skb_priorities(xport); | |
558 | for (i = 0; i < n_qdscp; i++) { | |
559 | struct skb_priority_to_dscp *pdscp; | |
560 | uint32_t skb_priority; | |
561 | ||
89a8a7f0 EJ |
562 | if (dpif_queue_to_priority(xport->xbridge->dpif, qdscp_list[i].queue, |
563 | &skb_priority)) { | |
55954f6e EJ |
564 | continue; |
565 | } | |
566 | ||
567 | pdscp = xmalloc(sizeof *pdscp); | |
568 | pdscp->skb_priority = skb_priority; | |
569 | pdscp->dscp = (qdscp_list[i].dscp << 2) & IP_DSCP_MASK; | |
570 | hmap_insert(&xport->skb_priorities, &pdscp->hmap_node, | |
571 | hash_int(pdscp->skb_priority, 0)); | |
572 | } | |
46c88433 EJ |
573 | } |
574 | ||
575 | void | |
576 | xlate_ofport_remove(struct ofport_dpif *ofport) | |
577 | { | |
578 | struct xport *xport = xport_lookup(ofport); | |
579 | ||
580 | if (!xport) { | |
581 | return; | |
582 | } | |
583 | ||
584 | if (xport->peer) { | |
585 | xport->peer->peer = NULL; | |
586 | xport->peer = NULL; | |
587 | } | |
588 | ||
e621a12d EJ |
589 | if (xport->xbundle) { |
590 | list_remove(&xport->bundle_node); | |
591 | } | |
592 | ||
55954f6e EJ |
593 | clear_skb_priorities(xport); |
594 | hmap_destroy(&xport->skb_priorities); | |
595 | ||
46c88433 EJ |
596 | hmap_remove(&xports, &xport->hmap_node); |
597 | hmap_remove(&xport->xbridge->xports, &xport->ofp_node); | |
598 | ||
599 | netdev_close(xport->netdev); | |
600 | cfm_unref(xport->cfm); | |
601 | bfd_unref(xport->bfd); | |
602 | free(xport); | |
603 | } | |
604 | ||
8449c4d6 EJ |
605 | /* Given a datpath, packet, and flow metadata ('backer', 'packet', and 'key' |
606 | * respectively), populates 'flow' with the result of odp_flow_key_to_flow(). | |
836fbda7 SH |
607 | * Optionally populates 'ofproto' with the ofproto_dpif, 'odp_in_port' with |
608 | * the datapath in_port, that 'packet' ingressed, and 'ipfix', 'sflow', and | |
609 | * 'netflow' with the appropriate handles for those protocols if they're | |
610 | * enabled. Caller is responsible for unrefing them. | |
8449c4d6 EJ |
611 | * |
612 | * If 'ofproto' is nonnull, requires 'flow''s in_port to exist. Otherwise sets | |
613 | * 'flow''s in_port to OFPP_NONE. | |
614 | * | |
615 | * This function does post-processing on data returned from | |
616 | * odp_flow_key_to_flow() to help make VLAN splinters transparent to the rest | |
617 | * of the upcall processing logic. In particular, if the extracted in_port is | |
618 | * a VLAN splinter port, it replaces flow->in_port by the "real" port, sets | |
619 | * flow->vlan_tci correctly for the VLAN of the VLAN splinter port, and pushes | |
620 | * a VLAN header onto 'packet' (if it is nonnull). | |
621 | * | |
622 | * Similarly, this function also includes some logic to help with tunnels. It | |
623 | * may modify 'flow' as necessary to make the tunneling implementation | |
624 | * transparent to the upcall processing logic. | |
625 | * | |
626 | * Returns 0 if successful, ENODEV if the parsed flow has no associated ofport, | |
627 | * or some other positive errno if there are other problems. */ | |
628 | int | |
629 | xlate_receive(const struct dpif_backer *backer, struct ofpbuf *packet, | |
836fbda7 | 630 | const struct nlattr *key, size_t key_len, struct flow *flow, |
1dfdb9b3 EJ |
631 | struct ofproto_dpif **ofproto, struct dpif_ipfix **ipfix, |
632 | struct dpif_sflow **sflow, struct netflow **netflow, | |
633 | odp_port_t *odp_in_port) | |
8449c4d6 | 634 | { |
8449c4d6 EJ |
635 | const struct xport *xport; |
636 | int error = ENODEV; | |
637 | ||
dc24a00f | 638 | ovs_rwlock_rdlock(&xlate_rwlock); |
836fbda7 | 639 | if (odp_flow_key_to_flow(key, key_len, flow) == ODP_FIT_ERROR) { |
8449c4d6 EJ |
640 | error = EINVAL; |
641 | goto exit; | |
642 | } | |
643 | ||
644 | if (odp_in_port) { | |
645 | *odp_in_port = flow->in_port.odp_port; | |
646 | } | |
647 | ||
648 | xport = xport_lookup(tnl_port_should_receive(flow) | |
d6fc5f57 EJ |
649 | ? tnl_port_receive(flow) |
650 | : odp_port_to_ofport(backer, flow->in_port.odp_port)); | |
8449c4d6 EJ |
651 | |
652 | flow->in_port.ofp_port = xport ? xport->ofp_port : OFPP_NONE; | |
653 | if (!xport) { | |
654 | goto exit; | |
655 | } | |
656 | ||
657 | if (vsp_adjust_flow(xport->xbridge->ofproto, flow)) { | |
658 | if (packet) { | |
659 | /* Make the packet resemble the flow, so that it gets sent to | |
660 | * an OpenFlow controller properly, so that it looks correct | |
661 | * for sFlow, and so that flow_extract() will get the correct | |
da546e07 | 662 | * vlan_tci if it is called on 'packet'. */ |
1bf02876 | 663 | eth_push_vlan(packet, htons(ETH_TYPE_VLAN), flow->vlan_tci); |
8449c4d6 | 664 | } |
8449c4d6 EJ |
665 | } |
666 | error = 0; | |
667 | ||
668 | if (ofproto) { | |
669 | *ofproto = xport->xbridge->ofproto; | |
670 | } | |
671 | ||
1dfdb9b3 EJ |
672 | if (ipfix) { |
673 | *ipfix = dpif_ipfix_ref(xport->xbridge->ipfix); | |
674 | } | |
675 | ||
676 | if (sflow) { | |
677 | *sflow = dpif_sflow_ref(xport->xbridge->sflow); | |
678 | } | |
679 | ||
680 | if (netflow) { | |
681 | *netflow = netflow_ref(xport->xbridge->netflow); | |
682 | } | |
683 | ||
8449c4d6 | 684 | exit: |
dc24a00f | 685 | ovs_rwlock_unlock(&xlate_rwlock); |
8449c4d6 EJ |
686 | return error; |
687 | } | |
688 | ||
46c88433 EJ |
689 | static struct xbridge * |
690 | xbridge_lookup(const struct ofproto_dpif *ofproto) | |
691 | { | |
692 | struct xbridge *xbridge; | |
693 | ||
5e6af486 EJ |
694 | if (!ofproto) { |
695 | return NULL; | |
696 | } | |
697 | ||
46c88433 EJ |
698 | HMAP_FOR_EACH_IN_BUCKET (xbridge, hmap_node, hash_pointer(ofproto, 0), |
699 | &xbridges) { | |
700 | if (xbridge->ofproto == ofproto) { | |
701 | return xbridge; | |
702 | } | |
703 | } | |
704 | return NULL; | |
705 | } | |
706 | ||
707 | static struct xbundle * | |
708 | xbundle_lookup(const struct ofbundle *ofbundle) | |
709 | { | |
710 | struct xbundle *xbundle; | |
711 | ||
5e6af486 EJ |
712 | if (!ofbundle) { |
713 | return NULL; | |
714 | } | |
715 | ||
46c88433 EJ |
716 | HMAP_FOR_EACH_IN_BUCKET (xbundle, hmap_node, hash_pointer(ofbundle, 0), |
717 | &xbundles) { | |
718 | if (xbundle->ofbundle == ofbundle) { | |
719 | return xbundle; | |
720 | } | |
721 | } | |
722 | return NULL; | |
723 | } | |
724 | ||
725 | static struct xport * | |
5e6af486 | 726 | xport_lookup(const struct ofport_dpif *ofport) |
46c88433 EJ |
727 | { |
728 | struct xport *xport; | |
729 | ||
5e6af486 EJ |
730 | if (!ofport) { |
731 | return NULL; | |
732 | } | |
733 | ||
46c88433 EJ |
734 | HMAP_FOR_EACH_IN_BUCKET (xport, hmap_node, hash_pointer(ofport, 0), |
735 | &xports) { | |
736 | if (xport->ofport == ofport) { | |
737 | return xport; | |
738 | } | |
739 | } | |
740 | return NULL; | |
741 | } | |
742 | ||
40085e56 EJ |
743 | static struct stp_port * |
744 | xport_get_stp_port(const struct xport *xport) | |
745 | { | |
92cf817b | 746 | return xport->xbridge->stp && xport->stp_port_no != -1 |
40085e56 EJ |
747 | ? stp_get_port(xport->xbridge->stp, xport->stp_port_no) |
748 | : NULL; | |
749 | } | |
9d189a50 | 750 | |
0d1cee12 | 751 | static bool |
9d189a50 EJ |
752 | xport_stp_learn_state(const struct xport *xport) |
753 | { | |
40085e56 EJ |
754 | struct stp_port *sp = xport_get_stp_port(xport); |
755 | return stp_learn_in_state(sp ? stp_port_get_state(sp) : STP_DISABLED); | |
9d189a50 EJ |
756 | } |
757 | ||
758 | static bool | |
759 | xport_stp_forward_state(const struct xport *xport) | |
760 | { | |
40085e56 EJ |
761 | struct stp_port *sp = xport_get_stp_port(xport); |
762 | return stp_forward_in_state(sp ? stp_port_get_state(sp) : STP_DISABLED); | |
9d189a50 EJ |
763 | } |
764 | ||
0d1cee12 K |
765 | static bool |
766 | xport_stp_listen_state(const struct xport *xport) | |
767 | { | |
768 | struct stp_port *sp = xport_get_stp_port(xport); | |
769 | return stp_listen_in_state(sp ? stp_port_get_state(sp) : STP_DISABLED); | |
770 | } | |
771 | ||
9d189a50 EJ |
772 | /* Returns true if STP should process 'flow'. Sets fields in 'wc' that |
773 | * were used to make the determination.*/ | |
774 | static bool | |
775 | stp_should_process_flow(const struct flow *flow, struct flow_wildcards *wc) | |
776 | { | |
bbbca389 | 777 | /* is_stp() also checks dl_type, but dl_type is always set in 'wc'. */ |
9d189a50 | 778 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); |
bbbca389 | 779 | return is_stp(flow); |
9d189a50 EJ |
780 | } |
781 | ||
782 | static void | |
783 | stp_process_packet(const struct xport *xport, const struct ofpbuf *packet) | |
784 | { | |
40085e56 | 785 | struct stp_port *sp = xport_get_stp_port(xport); |
9d189a50 | 786 | struct ofpbuf payload = *packet; |
1f317cb5 | 787 | struct eth_header *eth = ofpbuf_data(&payload); |
9d189a50 EJ |
788 | |
789 | /* Sink packets on ports that have STP disabled when the bridge has | |
790 | * STP enabled. */ | |
791 | if (!sp || stp_port_get_state(sp) == STP_DISABLED) { | |
792 | return; | |
793 | } | |
794 | ||
795 | /* Trim off padding on payload. */ | |
1f317cb5 PS |
796 | if (ofpbuf_size(&payload) > ntohs(eth->eth_type) + ETH_HEADER_LEN) { |
797 | ofpbuf_set_size(&payload, ntohs(eth->eth_type) + ETH_HEADER_LEN); | |
9d189a50 EJ |
798 | } |
799 | ||
800 | if (ofpbuf_try_pull(&payload, ETH_HEADER_LEN + LLC_HEADER_LEN)) { | |
1f317cb5 | 801 | stp_received_bpdu(sp, ofpbuf_data(&payload), ofpbuf_size(&payload)); |
9d189a50 EJ |
802 | } |
803 | } | |
804 | ||
46c88433 EJ |
805 | static struct xport * |
806 | get_ofp_port(const struct xbridge *xbridge, ofp_port_t ofp_port) | |
807 | { | |
808 | struct xport *xport; | |
809 | ||
810 | HMAP_FOR_EACH_IN_BUCKET (xport, ofp_node, hash_ofp_port(ofp_port), | |
811 | &xbridge->xports) { | |
812 | if (xport->ofp_port == ofp_port) { | |
813 | return xport; | |
814 | } | |
815 | } | |
816 | return NULL; | |
817 | } | |
818 | ||
819 | static odp_port_t | |
820 | ofp_port_to_odp_port(const struct xbridge *xbridge, ofp_port_t ofp_port) | |
821 | { | |
822 | const struct xport *xport = get_ofp_port(xbridge, ofp_port); | |
823 | return xport ? xport->odp_port : ODPP_NONE; | |
824 | } | |
825 | ||
dd8cd4b4 SH |
826 | static bool |
827 | odp_port_is_alive(const struct xlate_ctx *ctx, ofp_port_t ofp_port) | |
828 | { | |
829 | struct xport *xport; | |
830 | ||
831 | xport = get_ofp_port(ctx->xbridge, ofp_port); | |
832 | if (!xport || xport->config & OFPUTIL_PC_PORT_DOWN || | |
833 | xport->state & OFPUTIL_PS_LINK_DOWN) { | |
834 | return false; | |
835 | } | |
836 | ||
837 | return true; | |
838 | } | |
839 | ||
840 | static const struct ofputil_bucket * | |
841 | group_first_live_bucket(const struct xlate_ctx *, const struct group_dpif *, | |
842 | int depth); | |
843 | ||
844 | static bool | |
845 | group_is_alive(const struct xlate_ctx *ctx, uint32_t group_id, int depth) | |
846 | { | |
847 | struct group_dpif *group; | |
848 | bool hit; | |
849 | ||
850 | hit = group_dpif_lookup(ctx->xbridge->ofproto, group_id, &group); | |
851 | if (!hit) { | |
852 | return false; | |
853 | } | |
854 | ||
855 | hit = group_first_live_bucket(ctx, group, depth) != NULL; | |
856 | ||
857 | group_dpif_release(group); | |
858 | return hit; | |
859 | } | |
860 | ||
861 | #define MAX_LIVENESS_RECURSION 128 /* Arbitrary limit */ | |
862 | ||
863 | static bool | |
864 | bucket_is_alive(const struct xlate_ctx *ctx, | |
865 | const struct ofputil_bucket *bucket, int depth) | |
866 | { | |
867 | if (depth >= MAX_LIVENESS_RECURSION) { | |
868 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); | |
869 | ||
870 | VLOG_WARN_RL(&rl, "bucket chaining exceeded %d links", | |
871 | MAX_LIVENESS_RECURSION); | |
872 | return false; | |
873 | } | |
874 | ||
fe7e5749 | 875 | return !ofputil_bucket_has_liveness(bucket) || |
d6fc5f57 EJ |
876 | (bucket->watch_port != OFPP_ANY && |
877 | odp_port_is_alive(ctx, bucket->watch_port)) || | |
878 | (bucket->watch_group != OFPG_ANY && | |
879 | group_is_alive(ctx, bucket->watch_group, depth + 1)); | |
dd8cd4b4 SH |
880 | } |
881 | ||
882 | static const struct ofputil_bucket * | |
883 | group_first_live_bucket(const struct xlate_ctx *ctx, | |
884 | const struct group_dpif *group, int depth) | |
885 | { | |
886 | struct ofputil_bucket *bucket; | |
887 | const struct list *buckets; | |
888 | ||
889 | group_dpif_get_buckets(group, &buckets); | |
890 | LIST_FOR_EACH (bucket, list_node, buckets) { | |
891 | if (bucket_is_alive(ctx, bucket, depth)) { | |
892 | return bucket; | |
893 | } | |
894 | } | |
895 | ||
896 | return NULL; | |
897 | } | |
898 | ||
fe7e5749 SH |
899 | static const struct ofputil_bucket * |
900 | group_best_live_bucket(const struct xlate_ctx *ctx, | |
901 | const struct group_dpif *group, | |
902 | uint32_t basis) | |
903 | { | |
904 | const struct ofputil_bucket *best_bucket = NULL; | |
905 | uint32_t best_score = 0; | |
906 | int i = 0; | |
907 | ||
908 | const struct ofputil_bucket *bucket; | |
909 | const struct list *buckets; | |
910 | ||
911 | group_dpif_get_buckets(group, &buckets); | |
912 | LIST_FOR_EACH (bucket, list_node, buckets) { | |
913 | if (bucket_is_alive(ctx, bucket, 0)) { | |
7cb279c2 | 914 | uint32_t score = (hash_int(i, basis) & 0xffff) * bucket->weight; |
fe7e5749 SH |
915 | if (score >= best_score) { |
916 | best_bucket = bucket; | |
917 | best_score = score; | |
918 | } | |
919 | } | |
920 | i++; | |
921 | } | |
922 | ||
923 | return best_bucket; | |
924 | } | |
925 | ||
9583bc14 | 926 | static bool |
46c88433 | 927 | xbundle_trunks_vlan(const struct xbundle *bundle, uint16_t vlan) |
9583bc14 EJ |
928 | { |
929 | return (bundle->vlan_mode != PORT_VLAN_ACCESS | |
930 | && (!bundle->trunks || bitmap_is_set(bundle->trunks, vlan))); | |
931 | } | |
932 | ||
933 | static bool | |
46c88433 EJ |
934 | xbundle_includes_vlan(const struct xbundle *xbundle, uint16_t vlan) |
935 | { | |
936 | return vlan == xbundle->vlan || xbundle_trunks_vlan(xbundle, vlan); | |
937 | } | |
938 | ||
939 | static mirror_mask_t | |
940 | xbundle_mirror_out(const struct xbridge *xbridge, struct xbundle *xbundle) | |
941 | { | |
942 | return xbundle != &ofpp_none_bundle | |
943 | ? mirror_bundle_out(xbridge->mbridge, xbundle->ofbundle) | |
944 | : 0; | |
945 | } | |
946 | ||
947 | static mirror_mask_t | |
948 | xbundle_mirror_src(const struct xbridge *xbridge, struct xbundle *xbundle) | |
9583bc14 | 949 | { |
46c88433 EJ |
950 | return xbundle != &ofpp_none_bundle |
951 | ? mirror_bundle_src(xbridge->mbridge, xbundle->ofbundle) | |
952 | : 0; | |
9583bc14 EJ |
953 | } |
954 | ||
46c88433 EJ |
955 | static mirror_mask_t |
956 | xbundle_mirror_dst(const struct xbridge *xbridge, struct xbundle *xbundle) | |
9583bc14 | 957 | { |
46c88433 EJ |
958 | return xbundle != &ofpp_none_bundle |
959 | ? mirror_bundle_dst(xbridge->mbridge, xbundle->ofbundle) | |
960 | : 0; | |
961 | } | |
962 | ||
963 | static struct xbundle * | |
964 | lookup_input_bundle(const struct xbridge *xbridge, ofp_port_t in_port, | |
965 | bool warn, struct xport **in_xportp) | |
966 | { | |
967 | struct xport *xport; | |
9583bc14 EJ |
968 | |
969 | /* Find the port and bundle for the received packet. */ | |
46c88433 EJ |
970 | xport = get_ofp_port(xbridge, in_port); |
971 | if (in_xportp) { | |
972 | *in_xportp = xport; | |
9583bc14 | 973 | } |
46c88433 EJ |
974 | if (xport && xport->xbundle) { |
975 | return xport->xbundle; | |
9583bc14 EJ |
976 | } |
977 | ||
6362203b YT |
978 | /* Special-case OFPP_NONE (OF1.0) and OFPP_CONTROLLER (OF1.1+), |
979 | * which a controller may use as the ingress port for traffic that | |
980 | * it is sourcing. */ | |
981 | if (in_port == OFPP_CONTROLLER || in_port == OFPP_NONE) { | |
9583bc14 EJ |
982 | return &ofpp_none_bundle; |
983 | } | |
984 | ||
985 | /* Odd. A few possible reasons here: | |
986 | * | |
987 | * - We deleted a port but there are still a few packets queued up | |
988 | * from it. | |
989 | * | |
990 | * - Someone externally added a port (e.g. "ovs-dpctl add-if") that | |
991 | * we don't know about. | |
992 | * | |
993 | * - The ofproto client didn't configure the port as part of a bundle. | |
994 | * This is particularly likely to happen if a packet was received on the | |
995 | * port after it was created, but before the client had a chance to | |
996 | * configure its bundle. | |
997 | */ | |
998 | if (warn) { | |
999 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
1000 | ||
1001 | VLOG_WARN_RL(&rl, "bridge %s: received packet on unknown " | |
46c88433 | 1002 | "port %"PRIu16, xbridge->name, in_port); |
9583bc14 EJ |
1003 | } |
1004 | return NULL; | |
1005 | } | |
1006 | ||
1007 | static void | |
1008 | add_mirror_actions(struct xlate_ctx *ctx, const struct flow *orig_flow) | |
1009 | { | |
46c88433 | 1010 | const struct xbridge *xbridge = ctx->xbridge; |
9583bc14 | 1011 | mirror_mask_t mirrors; |
46c88433 | 1012 | struct xbundle *in_xbundle; |
9583bc14 EJ |
1013 | uint16_t vlan; |
1014 | uint16_t vid; | |
cdf5d3a5 EJ |
1015 | |
1016 | mirrors = ctx->xout->mirrors; | |
1017 | ctx->xout->mirrors = 0; | |
9583bc14 | 1018 | |
46c88433 EJ |
1019 | in_xbundle = lookup_input_bundle(xbridge, orig_flow->in_port.ofp_port, |
1020 | ctx->xin->packet != NULL, NULL); | |
1021 | if (!in_xbundle) { | |
9583bc14 EJ |
1022 | return; |
1023 | } | |
46c88433 | 1024 | mirrors |= xbundle_mirror_src(xbridge, in_xbundle); |
9583bc14 EJ |
1025 | |
1026 | /* Drop frames on bundles reserved for mirroring. */ | |
46c88433 | 1027 | if (xbundle_mirror_out(xbridge, in_xbundle)) { |
9583bc14 EJ |
1028 | if (ctx->xin->packet != NULL) { |
1029 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
1030 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet received on port " | |
1031 | "%s, which is reserved exclusively for mirroring", | |
46c88433 | 1032 | ctx->xbridge->name, in_xbundle->name); |
9583bc14 | 1033 | } |
aaa0fbae | 1034 | ofpbuf_clear(&ctx->xout->odp_actions); |
9583bc14 EJ |
1035 | return; |
1036 | } | |
1037 | ||
1038 | /* Check VLAN. */ | |
1039 | vid = vlan_tci_to_vid(orig_flow->vlan_tci); | |
46c88433 | 1040 | if (!input_vid_is_valid(vid, in_xbundle, ctx->xin->packet != NULL)) { |
9583bc14 EJ |
1041 | return; |
1042 | } | |
46c88433 | 1043 | vlan = input_vid_to_vlan(in_xbundle, vid); |
9583bc14 | 1044 | |
9583bc14 EJ |
1045 | if (!mirrors) { |
1046 | return; | |
1047 | } | |
1048 | ||
1049 | /* Restore the original packet before adding the mirror actions. */ | |
1050 | ctx->xin->flow = *orig_flow; | |
1051 | ||
1052 | while (mirrors) { | |
ec7ceaed EJ |
1053 | mirror_mask_t dup_mirrors; |
1054 | struct ofbundle *out; | |
1055 | unsigned long *vlans; | |
1056 | bool vlan_mirrored; | |
1057 | bool has_mirror; | |
1058 | int out_vlan; | |
1059 | ||
4b6ab2b0 | 1060 | has_mirror = mirror_get(xbridge->mbridge, raw_ctz(mirrors), |
ec7ceaed EJ |
1061 | &vlans, &dup_mirrors, &out, &out_vlan); |
1062 | ovs_assert(has_mirror); | |
1063 | ||
1064 | if (vlans) { | |
9583bc14 EJ |
1065 | ctx->xout->wc.masks.vlan_tci |= htons(VLAN_CFI | VLAN_VID_MASK); |
1066 | } | |
ec7ceaed EJ |
1067 | vlan_mirrored = !vlans || bitmap_is_set(vlans, vlan); |
1068 | free(vlans); | |
9583bc14 | 1069 | |
ec7ceaed | 1070 | if (!vlan_mirrored) { |
9583bc14 EJ |
1071 | mirrors = zero_rightmost_1bit(mirrors); |
1072 | continue; | |
1073 | } | |
1074 | ||
ec7ceaed EJ |
1075 | mirrors &= ~dup_mirrors; |
1076 | ctx->xout->mirrors |= dup_mirrors; | |
1077 | if (out) { | |
46c88433 EJ |
1078 | struct xbundle *out_xbundle = xbundle_lookup(out); |
1079 | if (out_xbundle) { | |
1080 | output_normal(ctx, out_xbundle, vlan); | |
1081 | } | |
ec7ceaed | 1082 | } else if (vlan != out_vlan |
9583bc14 | 1083 | && !eth_addr_is_reserved(orig_flow->dl_dst)) { |
46c88433 | 1084 | struct xbundle *xbundle; |
9583bc14 | 1085 | |
46c88433 EJ |
1086 | LIST_FOR_EACH (xbundle, list_node, &xbridge->xbundles) { |
1087 | if (xbundle_includes_vlan(xbundle, out_vlan) | |
1088 | && !xbundle_mirror_out(xbridge, xbundle)) { | |
1089 | output_normal(ctx, xbundle, out_vlan); | |
9583bc14 EJ |
1090 | } |
1091 | } | |
1092 | } | |
1093 | } | |
1094 | } | |
1095 | ||
1096 | /* Given 'vid', the VID obtained from the 802.1Q header that was received as | |
46c88433 | 1097 | * part of a packet (specify 0 if there was no 802.1Q header), and 'in_xbundle', |
9583bc14 EJ |
1098 | * the bundle on which the packet was received, returns the VLAN to which the |
1099 | * packet belongs. | |
1100 | * | |
1101 | * Both 'vid' and the return value are in the range 0...4095. */ | |
1102 | static uint16_t | |
46c88433 | 1103 | input_vid_to_vlan(const struct xbundle *in_xbundle, uint16_t vid) |
9583bc14 | 1104 | { |
46c88433 | 1105 | switch (in_xbundle->vlan_mode) { |
9583bc14 | 1106 | case PORT_VLAN_ACCESS: |
46c88433 | 1107 | return in_xbundle->vlan; |
9583bc14 EJ |
1108 | break; |
1109 | ||
1110 | case PORT_VLAN_TRUNK: | |
1111 | return vid; | |
1112 | ||
1113 | case PORT_VLAN_NATIVE_UNTAGGED: | |
1114 | case PORT_VLAN_NATIVE_TAGGED: | |
46c88433 | 1115 | return vid ? vid : in_xbundle->vlan; |
9583bc14 EJ |
1116 | |
1117 | default: | |
428b2edd | 1118 | OVS_NOT_REACHED(); |
9583bc14 EJ |
1119 | } |
1120 | } | |
1121 | ||
46c88433 | 1122 | /* Checks whether a packet with the given 'vid' may ingress on 'in_xbundle'. |
9583bc14 EJ |
1123 | * If so, returns true. Otherwise, returns false and, if 'warn' is true, logs |
1124 | * a warning. | |
1125 | * | |
1126 | * 'vid' should be the VID obtained from the 802.1Q header that was received as | |
1127 | * part of a packet (specify 0 if there was no 802.1Q header), in the range | |
1128 | * 0...4095. */ | |
1129 | static bool | |
46c88433 | 1130 | input_vid_is_valid(uint16_t vid, struct xbundle *in_xbundle, bool warn) |
9583bc14 EJ |
1131 | { |
1132 | /* Allow any VID on the OFPP_NONE port. */ | |
46c88433 | 1133 | if (in_xbundle == &ofpp_none_bundle) { |
9583bc14 EJ |
1134 | return true; |
1135 | } | |
1136 | ||
46c88433 | 1137 | switch (in_xbundle->vlan_mode) { |
9583bc14 EJ |
1138 | case PORT_VLAN_ACCESS: |
1139 | if (vid) { | |
1140 | if (warn) { | |
1141 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
46c88433 | 1142 | VLOG_WARN_RL(&rl, "dropping VLAN %"PRIu16" tagged " |
9583bc14 | 1143 | "packet received on port %s configured as VLAN " |
46c88433 EJ |
1144 | "%"PRIu16" access port", vid, in_xbundle->name, |
1145 | in_xbundle->vlan); | |
9583bc14 EJ |
1146 | } |
1147 | return false; | |
1148 | } | |
1149 | return true; | |
1150 | ||
1151 | case PORT_VLAN_NATIVE_UNTAGGED: | |
1152 | case PORT_VLAN_NATIVE_TAGGED: | |
1153 | if (!vid) { | |
1154 | /* Port must always carry its native VLAN. */ | |
1155 | return true; | |
1156 | } | |
1157 | /* Fall through. */ | |
1158 | case PORT_VLAN_TRUNK: | |
46c88433 | 1159 | if (!xbundle_includes_vlan(in_xbundle, vid)) { |
9583bc14 EJ |
1160 | if (warn) { |
1161 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
46c88433 | 1162 | VLOG_WARN_RL(&rl, "dropping VLAN %"PRIu16" packet " |
9583bc14 | 1163 | "received on port %s not configured for trunking " |
46c88433 | 1164 | "VLAN %"PRIu16, vid, in_xbundle->name, vid); |
9583bc14 EJ |
1165 | } |
1166 | return false; | |
1167 | } | |
1168 | return true; | |
1169 | ||
1170 | default: | |
428b2edd | 1171 | OVS_NOT_REACHED(); |
9583bc14 EJ |
1172 | } |
1173 | ||
1174 | } | |
1175 | ||
1176 | /* Given 'vlan', the VLAN that a packet belongs to, and | |
46c88433 | 1177 | * 'out_xbundle', a bundle on which the packet is to be output, returns the VID |
9583bc14 EJ |
1178 | * that should be included in the 802.1Q header. (If the return value is 0, |
1179 | * then the 802.1Q header should only be included in the packet if there is a | |
1180 | * nonzero PCP.) | |
1181 | * | |
1182 | * Both 'vlan' and the return value are in the range 0...4095. */ | |
1183 | static uint16_t | |
46c88433 | 1184 | output_vlan_to_vid(const struct xbundle *out_xbundle, uint16_t vlan) |
9583bc14 | 1185 | { |
46c88433 | 1186 | switch (out_xbundle->vlan_mode) { |
9583bc14 EJ |
1187 | case PORT_VLAN_ACCESS: |
1188 | return 0; | |
1189 | ||
1190 | case PORT_VLAN_TRUNK: | |
1191 | case PORT_VLAN_NATIVE_TAGGED: | |
1192 | return vlan; | |
1193 | ||
1194 | case PORT_VLAN_NATIVE_UNTAGGED: | |
46c88433 | 1195 | return vlan == out_xbundle->vlan ? 0 : vlan; |
9583bc14 EJ |
1196 | |
1197 | default: | |
428b2edd | 1198 | OVS_NOT_REACHED(); |
9583bc14 EJ |
1199 | } |
1200 | } | |
1201 | ||
1202 | static void | |
46c88433 | 1203 | output_normal(struct xlate_ctx *ctx, const struct xbundle *out_xbundle, |
9583bc14 EJ |
1204 | uint16_t vlan) |
1205 | { | |
33bf9176 | 1206 | ovs_be16 *flow_tci = &ctx->xin->flow.vlan_tci; |
9583bc14 EJ |
1207 | uint16_t vid; |
1208 | ovs_be16 tci, old_tci; | |
46c88433 | 1209 | struct xport *xport; |
9583bc14 | 1210 | |
46c88433 EJ |
1211 | vid = output_vlan_to_vid(out_xbundle, vlan); |
1212 | if (list_is_empty(&out_xbundle->xports)) { | |
1213 | /* Partially configured bundle with no slaves. Drop the packet. */ | |
1214 | return; | |
1215 | } else if (!out_xbundle->bond) { | |
92c08f09 | 1216 | ctx->use_recirc = false; |
46c88433 EJ |
1217 | xport = CONTAINER_OF(list_front(&out_xbundle->xports), struct xport, |
1218 | bundle_node); | |
9583bc14 | 1219 | } else { |
46c88433 | 1220 | struct ofport_dpif *ofport; |
92c08f09 | 1221 | struct xlate_recirc *xr = &ctx->recirc; |
54ecb5a2 | 1222 | struct flow_wildcards *wc = &ctx->xout->wc; |
adcf00ba AZ |
1223 | |
1224 | if (ctx->xbridge->enable_recirc) { | |
92c08f09 | 1225 | ctx->use_recirc = bond_may_recirc( |
62ac1f20 | 1226 | out_xbundle->bond, &xr->recirc_id, &xr->hash_basis); |
adcf00ba | 1227 | |
92c08f09 | 1228 | if (ctx->use_recirc) { |
adcf00ba | 1229 | /* Only TCP mode uses recirculation. */ |
347bf289 | 1230 | xr->hash_alg = OVS_HASH_ALG_L4; |
adcf00ba | 1231 | bond_update_post_recirc_rules(out_xbundle->bond, false); |
54ecb5a2 AZ |
1232 | |
1233 | /* Recirculation does not require unmasking hash fields. */ | |
1234 | wc = NULL; | |
adcf00ba AZ |
1235 | } |
1236 | } | |
46c88433 | 1237 | |
54ecb5a2 AZ |
1238 | ofport = bond_choose_output_slave(out_xbundle->bond, |
1239 | &ctx->xin->flow, wc, vid); | |
5e6af486 | 1240 | xport = xport_lookup(ofport); |
46c88433 EJ |
1241 | |
1242 | if (!xport) { | |
9583bc14 EJ |
1243 | /* No slaves enabled, so drop packet. */ |
1244 | return; | |
1245 | } | |
d6fc5f57 | 1246 | |
b256dc52 JS |
1247 | /* If ctx->xout->use_recirc is set, the main thread will handle stats |
1248 | * accounting for this bond. */ | |
92c08f09 | 1249 | if (!ctx->use_recirc) { |
b256dc52 JS |
1250 | if (ctx->xin->resubmit_stats) { |
1251 | bond_account(out_xbundle->bond, &ctx->xin->flow, vid, | |
1252 | ctx->xin->resubmit_stats->n_bytes); | |
1253 | } | |
1254 | if (ctx->xin->xcache) { | |
1255 | struct xc_entry *entry; | |
1256 | struct flow *flow; | |
1257 | ||
1258 | flow = &ctx->xin->flow; | |
1259 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_BOND); | |
1260 | entry->u.bond.bond = bond_ref(out_xbundle->bond); | |
1261 | entry->u.bond.flow = xmemdup(flow, sizeof *flow); | |
1262 | entry->u.bond.vid = vid; | |
1263 | } | |
d6fc5f57 | 1264 | } |
9583bc14 EJ |
1265 | } |
1266 | ||
33bf9176 | 1267 | old_tci = *flow_tci; |
9583bc14 | 1268 | tci = htons(vid); |
46c88433 | 1269 | if (tci || out_xbundle->use_priority_tags) { |
33bf9176 | 1270 | tci |= *flow_tci & htons(VLAN_PCP_MASK); |
9583bc14 EJ |
1271 | if (tci) { |
1272 | tci |= htons(VLAN_CFI); | |
1273 | } | |
1274 | } | |
33bf9176 | 1275 | *flow_tci = tci; |
9583bc14 | 1276 | |
46c88433 | 1277 | compose_output_action(ctx, xport->ofp_port); |
33bf9176 | 1278 | *flow_tci = old_tci; |
9583bc14 EJ |
1279 | } |
1280 | ||
1281 | /* A VM broadcasts a gratuitous ARP to indicate that it has resumed after | |
1282 | * migration. Older Citrix-patched Linux DomU used gratuitous ARP replies to | |
1283 | * indicate this; newer upstream kernels use gratuitous ARP requests. */ | |
1284 | static bool | |
1285 | is_gratuitous_arp(const struct flow *flow, struct flow_wildcards *wc) | |
1286 | { | |
1287 | if (flow->dl_type != htons(ETH_TYPE_ARP)) { | |
1288 | return false; | |
1289 | } | |
1290 | ||
1291 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); | |
1292 | if (!eth_addr_is_broadcast(flow->dl_dst)) { | |
1293 | return false; | |
1294 | } | |
1295 | ||
1296 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); | |
1297 | if (flow->nw_proto == ARP_OP_REPLY) { | |
1298 | return true; | |
1299 | } else if (flow->nw_proto == ARP_OP_REQUEST) { | |
1300 | memset(&wc->masks.nw_src, 0xff, sizeof wc->masks.nw_src); | |
1301 | memset(&wc->masks.nw_dst, 0xff, sizeof wc->masks.nw_dst); | |
1302 | ||
1303 | return flow->nw_src == flow->nw_dst; | |
1304 | } else { | |
1305 | return false; | |
1306 | } | |
1307 | } | |
1308 | ||
ff69c24a FL |
1309 | /* Determines whether packets in 'flow' within 'xbridge' should be forwarded or |
1310 | * dropped. Returns true if they may be forwarded, false if they should be | |
1311 | * dropped. | |
1312 | * | |
1313 | * 'in_port' must be the xport that corresponds to flow->in_port. | |
1314 | * 'in_port' must be part of a bundle (e.g. in_port->bundle must be nonnull). | |
1315 | * | |
1316 | * 'vlan' must be the VLAN that corresponds to flow->vlan_tci on 'in_port', as | |
1317 | * returned by input_vid_to_vlan(). It must be a valid VLAN for 'in_port', as | |
1318 | * checked by input_vid_is_valid(). | |
1319 | * | |
1320 | * May also add tags to '*tags', although the current implementation only does | |
1321 | * so in one special case. | |
1322 | */ | |
1323 | static bool | |
1324 | is_admissible(struct xlate_ctx *ctx, struct xport *in_port, | |
1325 | uint16_t vlan) | |
1326 | { | |
1327 | struct xbundle *in_xbundle = in_port->xbundle; | |
1328 | const struct xbridge *xbridge = ctx->xbridge; | |
1329 | struct flow *flow = &ctx->xin->flow; | |
1330 | ||
1331 | /* Drop frames for reserved multicast addresses | |
1332 | * only if forward_bpdu option is absent. */ | |
1333 | if (!xbridge->forward_bpdu && eth_addr_is_reserved(flow->dl_dst)) { | |
1334 | xlate_report(ctx, "packet has reserved destination MAC, dropping"); | |
1335 | return false; | |
1336 | } | |
1337 | ||
1338 | if (in_xbundle->bond) { | |
1339 | struct mac_entry *mac; | |
1340 | ||
1341 | switch (bond_check_admissibility(in_xbundle->bond, in_port->ofport, | |
1342 | flow->dl_dst)) { | |
1343 | case BV_ACCEPT: | |
1344 | break; | |
1345 | ||
1346 | case BV_DROP: | |
1347 | xlate_report(ctx, "bonding refused admissibility, dropping"); | |
1348 | return false; | |
1349 | ||
1350 | case BV_DROP_IF_MOVED: | |
1351 | ovs_rwlock_rdlock(&xbridge->ml->rwlock); | |
1352 | mac = mac_learning_lookup(xbridge->ml, flow->dl_src, vlan); | |
1353 | if (mac && mac->port.p != in_xbundle->ofbundle && | |
1354 | (!is_gratuitous_arp(flow, &ctx->xout->wc) | |
1355 | || mac_entry_is_grat_arp_locked(mac))) { | |
1356 | ovs_rwlock_unlock(&xbridge->ml->rwlock); | |
1357 | xlate_report(ctx, "SLB bond thinks this packet looped back, " | |
1358 | "dropping"); | |
1359 | return false; | |
1360 | } | |
1361 | ovs_rwlock_unlock(&xbridge->ml->rwlock); | |
1362 | break; | |
1363 | } | |
1364 | } | |
1365 | ||
1366 | return true; | |
1367 | } | |
1368 | ||
ee047520 BP |
1369 | /* Checks whether a MAC learning update is necessary for MAC learning table |
1370 | * 'ml' given that a packet matching 'flow' was received on 'in_xbundle' in | |
1371 | * 'vlan'. | |
1372 | * | |
1373 | * Most packets processed through the MAC learning table do not actually | |
1374 | * change it in any way. This function requires only a read lock on the MAC | |
1375 | * learning table, so it is much cheaper in this common case. | |
1376 | * | |
1377 | * Keep the code here synchronized with that in update_learning_table__() | |
1378 | * below. */ | |
1379 | static bool | |
1380 | is_mac_learning_update_needed(const struct mac_learning *ml, | |
1381 | const struct flow *flow, | |
1382 | struct flow_wildcards *wc, | |
1383 | int vlan, struct xbundle *in_xbundle) | |
d6fc5f57 | 1384 | OVS_REQ_RDLOCK(ml->rwlock) |
9583bc14 EJ |
1385 | { |
1386 | struct mac_entry *mac; | |
1387 | ||
ee047520 BP |
1388 | if (!mac_learning_may_learn(ml, flow->dl_src, vlan)) { |
1389 | return false; | |
1390 | } | |
1391 | ||
1392 | mac = mac_learning_lookup(ml, flow->dl_src, vlan); | |
1393 | if (!mac || mac_entry_age(ml, mac)) { | |
1394 | return true; | |
9583bc14 EJ |
1395 | } |
1396 | ||
ee047520 BP |
1397 | if (is_gratuitous_arp(flow, wc)) { |
1398 | /* We don't want to learn from gratuitous ARP packets that are | |
1399 | * reflected back over bond slaves so we lock the learning table. */ | |
1400 | if (!in_xbundle->bond) { | |
1401 | return true; | |
1402 | } else if (mac_entry_is_grat_arp_locked(mac)) { | |
1403 | return false; | |
1404 | } | |
1405 | } | |
1406 | ||
1407 | return mac->port.p != in_xbundle->ofbundle; | |
1408 | } | |
1409 | ||
1410 | ||
1411 | /* Updates MAC learning table 'ml' given that a packet matching 'flow' was | |
1412 | * received on 'in_xbundle' in 'vlan'. | |
1413 | * | |
1414 | * This code repeats all the checks in is_mac_learning_update_needed() because | |
1415 | * the lock was released between there and here and thus the MAC learning state | |
1416 | * could have changed. | |
1417 | * | |
1418 | * Keep the code here synchronized with that in is_mac_learning_update_needed() | |
1419 | * above. */ | |
1420 | static void | |
1421 | update_learning_table__(const struct xbridge *xbridge, | |
1422 | const struct flow *flow, struct flow_wildcards *wc, | |
1423 | int vlan, struct xbundle *in_xbundle) | |
d6fc5f57 | 1424 | OVS_REQ_WRLOCK(xbridge->ml->rwlock) |
ee047520 BP |
1425 | { |
1426 | struct mac_entry *mac; | |
1427 | ||
46c88433 | 1428 | if (!mac_learning_may_learn(xbridge->ml, flow->dl_src, vlan)) { |
ee047520 | 1429 | return; |
9583bc14 EJ |
1430 | } |
1431 | ||
46c88433 | 1432 | mac = mac_learning_insert(xbridge->ml, flow->dl_src, vlan); |
9583bc14 EJ |
1433 | if (is_gratuitous_arp(flow, wc)) { |
1434 | /* We don't want to learn from gratuitous ARP packets that are | |
1435 | * reflected back over bond slaves so we lock the learning table. */ | |
46c88433 | 1436 | if (!in_xbundle->bond) { |
9583bc14 EJ |
1437 | mac_entry_set_grat_arp_lock(mac); |
1438 | } else if (mac_entry_is_grat_arp_locked(mac)) { | |
ee047520 | 1439 | return; |
9583bc14 EJ |
1440 | } |
1441 | } | |
1442 | ||
30618594 | 1443 | if (mac->port.p != in_xbundle->ofbundle) { |
9583bc14 EJ |
1444 | /* The log messages here could actually be useful in debugging, |
1445 | * so keep the rate limit relatively high. */ | |
1446 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(30, 300); | |
ee047520 | 1447 | |
9583bc14 EJ |
1448 | VLOG_DBG_RL(&rl, "bridge %s: learned that "ETH_ADDR_FMT" is " |
1449 | "on port %s in VLAN %d", | |
46c88433 EJ |
1450 | xbridge->name, ETH_ADDR_ARGS(flow->dl_src), |
1451 | in_xbundle->name, vlan); | |
9583bc14 | 1452 | |
46c88433 | 1453 | mac->port.p = in_xbundle->ofbundle; |
30618594 | 1454 | mac_learning_changed(xbridge->ml); |
9583bc14 | 1455 | } |
ee047520 BP |
1456 | } |
1457 | ||
1458 | static void | |
1459 | update_learning_table(const struct xbridge *xbridge, | |
1460 | const struct flow *flow, struct flow_wildcards *wc, | |
1461 | int vlan, struct xbundle *in_xbundle) | |
1462 | { | |
1463 | bool need_update; | |
1464 | ||
1465 | /* Don't learn the OFPP_NONE port. */ | |
1466 | if (in_xbundle == &ofpp_none_bundle) { | |
1467 | return; | |
1468 | } | |
1469 | ||
1470 | /* First try the common case: no change to MAC learning table. */ | |
1471 | ovs_rwlock_rdlock(&xbridge->ml->rwlock); | |
1472 | need_update = is_mac_learning_update_needed(xbridge->ml, flow, wc, vlan, | |
1473 | in_xbundle); | |
509c0149 | 1474 | ovs_rwlock_unlock(&xbridge->ml->rwlock); |
ee047520 BP |
1475 | |
1476 | if (need_update) { | |
1477 | /* Slow path: MAC learning table might need an update. */ | |
1478 | ovs_rwlock_wrlock(&xbridge->ml->rwlock); | |
1479 | update_learning_table__(xbridge, flow, wc, vlan, in_xbundle); | |
1480 | ovs_rwlock_unlock(&xbridge->ml->rwlock); | |
1481 | } | |
9583bc14 EJ |
1482 | } |
1483 | ||
682800a4 FL |
1484 | static void |
1485 | xlate_normal_flood(struct xlate_ctx *ctx, struct xbundle *in_xbundle, | |
1486 | uint16_t vlan) | |
1487 | { | |
1488 | struct xbundle *xbundle; | |
1489 | ||
1490 | LIST_FOR_EACH (xbundle, list_node, &ctx->xbridge->xbundles) { | |
1491 | if (xbundle != in_xbundle | |
1492 | && xbundle_includes_vlan(xbundle, vlan) | |
1493 | && xbundle->floodable | |
1494 | && !xbundle_mirror_out(ctx->xbridge, xbundle)) { | |
1495 | output_normal(ctx, xbundle, vlan); | |
1496 | } | |
1497 | } | |
1498 | ctx->xout->nf_output_iface = NF_OUT_FLOOD; | |
1499 | } | |
1500 | ||
9583bc14 EJ |
1501 | static void |
1502 | xlate_normal(struct xlate_ctx *ctx) | |
1503 | { | |
33bf9176 BP |
1504 | struct flow_wildcards *wc = &ctx->xout->wc; |
1505 | struct flow *flow = &ctx->xin->flow; | |
46c88433 EJ |
1506 | struct xbundle *in_xbundle; |
1507 | struct xport *in_port; | |
9583bc14 | 1508 | struct mac_entry *mac; |
d6d5bbc9 | 1509 | void *mac_port; |
9583bc14 EJ |
1510 | uint16_t vlan; |
1511 | uint16_t vid; | |
1512 | ||
1513 | ctx->xout->has_normal = true; | |
1514 | ||
33bf9176 BP |
1515 | memset(&wc->masks.dl_src, 0xff, sizeof wc->masks.dl_src); |
1516 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); | |
1dd35f8a | 1517 | wc->masks.vlan_tci |= htons(VLAN_VID_MASK | VLAN_CFI); |
9583bc14 | 1518 | |
46c88433 EJ |
1519 | in_xbundle = lookup_input_bundle(ctx->xbridge, flow->in_port.ofp_port, |
1520 | ctx->xin->packet != NULL, &in_port); | |
1521 | if (!in_xbundle) { | |
9583bc14 EJ |
1522 | xlate_report(ctx, "no input bundle, dropping"); |
1523 | return; | |
1524 | } | |
1525 | ||
1526 | /* Drop malformed frames. */ | |
33bf9176 BP |
1527 | if (flow->dl_type == htons(ETH_TYPE_VLAN) && |
1528 | !(flow->vlan_tci & htons(VLAN_CFI))) { | |
9583bc14 EJ |
1529 | if (ctx->xin->packet != NULL) { |
1530 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
1531 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet with partial " | |
1532 | "VLAN tag received on port %s", | |
46c88433 | 1533 | ctx->xbridge->name, in_xbundle->name); |
9583bc14 EJ |
1534 | } |
1535 | xlate_report(ctx, "partial VLAN tag, dropping"); | |
1536 | return; | |
1537 | } | |
1538 | ||
1539 | /* Drop frames on bundles reserved for mirroring. */ | |
46c88433 | 1540 | if (xbundle_mirror_out(ctx->xbridge, in_xbundle)) { |
9583bc14 EJ |
1541 | if (ctx->xin->packet != NULL) { |
1542 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
1543 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet received on port " | |
1544 | "%s, which is reserved exclusively for mirroring", | |
46c88433 | 1545 | ctx->xbridge->name, in_xbundle->name); |
9583bc14 EJ |
1546 | } |
1547 | xlate_report(ctx, "input port is mirror output port, dropping"); | |
1548 | return; | |
1549 | } | |
1550 | ||
1551 | /* Check VLAN. */ | |
33bf9176 | 1552 | vid = vlan_tci_to_vid(flow->vlan_tci); |
46c88433 | 1553 | if (!input_vid_is_valid(vid, in_xbundle, ctx->xin->packet != NULL)) { |
9583bc14 EJ |
1554 | xlate_report(ctx, "disallowed VLAN VID for this input port, dropping"); |
1555 | return; | |
1556 | } | |
46c88433 | 1557 | vlan = input_vid_to_vlan(in_xbundle, vid); |
9583bc14 EJ |
1558 | |
1559 | /* Check other admissibility requirements. */ | |
1560 | if (in_port && !is_admissible(ctx, in_port, vlan)) { | |
1561 | return; | |
1562 | } | |
1563 | ||
1564 | /* Learn source MAC. */ | |
1565 | if (ctx->xin->may_learn) { | |
46c88433 | 1566 | update_learning_table(ctx->xbridge, flow, wc, vlan, in_xbundle); |
9583bc14 | 1567 | } |
b256dc52 JS |
1568 | if (ctx->xin->xcache) { |
1569 | struct xc_entry *entry; | |
1570 | ||
1571 | /* Save enough info to update mac learning table later. */ | |
1572 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_NORMAL); | |
1573 | entry->u.normal.ofproto = ctx->xin->ofproto; | |
1574 | entry->u.normal.flow = xmemdup(flow, sizeof *flow); | |
1575 | entry->u.normal.vlan = vlan; | |
1576 | } | |
9583bc14 EJ |
1577 | |
1578 | /* Determine output bundle. */ | |
509c0149 | 1579 | ovs_rwlock_rdlock(&ctx->xbridge->ml->rwlock); |
30618594 | 1580 | mac = mac_learning_lookup(ctx->xbridge->ml, flow->dl_dst, vlan); |
d6d5bbc9 EJ |
1581 | mac_port = mac ? mac->port.p : NULL; |
1582 | ovs_rwlock_unlock(&ctx->xbridge->ml->rwlock); | |
1583 | ||
1584 | if (mac_port) { | |
1585 | struct xbundle *mac_xbundle = xbundle_lookup(mac_port); | |
46c88433 | 1586 | if (mac_xbundle && mac_xbundle != in_xbundle) { |
9583bc14 | 1587 | xlate_report(ctx, "forwarding to learned port"); |
46c88433 EJ |
1588 | output_normal(ctx, mac_xbundle, vlan); |
1589 | } else if (!mac_xbundle) { | |
1590 | xlate_report(ctx, "learned port is unknown, dropping"); | |
9583bc14 EJ |
1591 | } else { |
1592 | xlate_report(ctx, "learned port is input port, dropping"); | |
1593 | } | |
1594 | } else { | |
9583bc14 | 1595 | xlate_report(ctx, "no learned MAC for destination, flooding"); |
682800a4 | 1596 | xlate_normal_flood(ctx, in_xbundle, vlan); |
9583bc14 EJ |
1597 | } |
1598 | } | |
1599 | ||
1600 | /* Compose SAMPLE action for sFlow or IPFIX. The given probability is | |
1601 | * the number of packets out of UINT32_MAX to sample. The given | |
1602 | * cookie is passed back in the callback for each sampled packet. | |
1603 | */ | |
1604 | static size_t | |
46c88433 | 1605 | compose_sample_action(const struct xbridge *xbridge, |
9583bc14 EJ |
1606 | struct ofpbuf *odp_actions, |
1607 | const struct flow *flow, | |
1608 | const uint32_t probability, | |
1609 | const union user_action_cookie *cookie, | |
1610 | const size_t cookie_size) | |
1611 | { | |
1612 | size_t sample_offset, actions_offset; | |
89a8a7f0 | 1613 | odp_port_t odp_port; |
9583bc14 | 1614 | int cookie_offset; |
89a8a7f0 | 1615 | uint32_t pid; |
9583bc14 EJ |
1616 | |
1617 | sample_offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_SAMPLE); | |
1618 | ||
1619 | nl_msg_put_u32(odp_actions, OVS_SAMPLE_ATTR_PROBABILITY, probability); | |
1620 | ||
1621 | actions_offset = nl_msg_start_nested(odp_actions, OVS_SAMPLE_ATTR_ACTIONS); | |
89a8a7f0 EJ |
1622 | |
1623 | odp_port = ofp_port_to_odp_port(xbridge, flow->in_port.ofp_port); | |
9a159f74 AW |
1624 | pid = dpif_port_get_pid(xbridge->dpif, odp_port, |
1625 | flow_hash_5tuple(flow, 0)); | |
1626 | cookie_offset = odp_put_userspace_action(pid, cookie, cookie_size, | |
1627 | odp_actions); | |
9583bc14 EJ |
1628 | |
1629 | nl_msg_end_nested(odp_actions, actions_offset); | |
1630 | nl_msg_end_nested(odp_actions, sample_offset); | |
1631 | return cookie_offset; | |
1632 | } | |
1633 | ||
1634 | static void | |
46c88433 EJ |
1635 | compose_sflow_cookie(const struct xbridge *xbridge, ovs_be16 vlan_tci, |
1636 | odp_port_t odp_port, unsigned int n_outputs, | |
1637 | union user_action_cookie *cookie) | |
9583bc14 EJ |
1638 | { |
1639 | int ifindex; | |
1640 | ||
1641 | cookie->type = USER_ACTION_COOKIE_SFLOW; | |
1642 | cookie->sflow.vlan_tci = vlan_tci; | |
1643 | ||
1644 | /* See http://www.sflow.org/sflow_version_5.txt (search for "Input/output | |
1645 | * port information") for the interpretation of cookie->output. */ | |
1646 | switch (n_outputs) { | |
1647 | case 0: | |
1648 | /* 0x40000000 | 256 means "packet dropped for unknown reason". */ | |
1649 | cookie->sflow.output = 0x40000000 | 256; | |
1650 | break; | |
1651 | ||
1652 | case 1: | |
46c88433 | 1653 | ifindex = dpif_sflow_odp_port_to_ifindex(xbridge->sflow, odp_port); |
9583bc14 EJ |
1654 | if (ifindex) { |
1655 | cookie->sflow.output = ifindex; | |
1656 | break; | |
1657 | } | |
1658 | /* Fall through. */ | |
1659 | default: | |
1660 | /* 0x80000000 means "multiple output ports. */ | |
1661 | cookie->sflow.output = 0x80000000 | n_outputs; | |
1662 | break; | |
1663 | } | |
1664 | } | |
1665 | ||
1666 | /* Compose SAMPLE action for sFlow bridge sampling. */ | |
1667 | static size_t | |
46c88433 | 1668 | compose_sflow_action(const struct xbridge *xbridge, |
9583bc14 EJ |
1669 | struct ofpbuf *odp_actions, |
1670 | const struct flow *flow, | |
4e022ec0 | 1671 | odp_port_t odp_port) |
9583bc14 EJ |
1672 | { |
1673 | uint32_t probability; | |
1674 | union user_action_cookie cookie; | |
1675 | ||
46c88433 | 1676 | if (!xbridge->sflow || flow->in_port.ofp_port == OFPP_NONE) { |
9583bc14 EJ |
1677 | return 0; |
1678 | } | |
1679 | ||
46c88433 EJ |
1680 | probability = dpif_sflow_get_probability(xbridge->sflow); |
1681 | compose_sflow_cookie(xbridge, htons(0), odp_port, | |
4e022ec0 | 1682 | odp_port == ODPP_NONE ? 0 : 1, &cookie); |
9583bc14 | 1683 | |
46c88433 | 1684 | return compose_sample_action(xbridge, odp_actions, flow, probability, |
9583bc14 EJ |
1685 | &cookie, sizeof cookie.sflow); |
1686 | } | |
1687 | ||
1688 | static void | |
1689 | compose_flow_sample_cookie(uint16_t probability, uint32_t collector_set_id, | |
1690 | uint32_t obs_domain_id, uint32_t obs_point_id, | |
1691 | union user_action_cookie *cookie) | |
1692 | { | |
1693 | cookie->type = USER_ACTION_COOKIE_FLOW_SAMPLE; | |
1694 | cookie->flow_sample.probability = probability; | |
1695 | cookie->flow_sample.collector_set_id = collector_set_id; | |
1696 | cookie->flow_sample.obs_domain_id = obs_domain_id; | |
1697 | cookie->flow_sample.obs_point_id = obs_point_id; | |
1698 | } | |
1699 | ||
1700 | static void | |
1701 | compose_ipfix_cookie(union user_action_cookie *cookie) | |
1702 | { | |
1703 | cookie->type = USER_ACTION_COOKIE_IPFIX; | |
1704 | } | |
1705 | ||
1706 | /* Compose SAMPLE action for IPFIX bridge sampling. */ | |
1707 | static void | |
46c88433 | 1708 | compose_ipfix_action(const struct xbridge *xbridge, |
9583bc14 EJ |
1709 | struct ofpbuf *odp_actions, |
1710 | const struct flow *flow) | |
1711 | { | |
1712 | uint32_t probability; | |
1713 | union user_action_cookie cookie; | |
1714 | ||
46c88433 | 1715 | if (!xbridge->ipfix || flow->in_port.ofp_port == OFPP_NONE) { |
9583bc14 EJ |
1716 | return; |
1717 | } | |
1718 | ||
46c88433 | 1719 | probability = dpif_ipfix_get_bridge_exporter_probability(xbridge->ipfix); |
9583bc14 EJ |
1720 | compose_ipfix_cookie(&cookie); |
1721 | ||
46c88433 | 1722 | compose_sample_action(xbridge, odp_actions, flow, probability, |
9583bc14 EJ |
1723 | &cookie, sizeof cookie.ipfix); |
1724 | } | |
1725 | ||
1726 | /* SAMPLE action for sFlow must be first action in any given list of | |
1727 | * actions. At this point we do not have all information required to | |
1728 | * build it. So try to build sample action as complete as possible. */ | |
1729 | static void | |
1730 | add_sflow_action(struct xlate_ctx *ctx) | |
1731 | { | |
46c88433 | 1732 | ctx->user_cookie_offset = compose_sflow_action(ctx->xbridge, |
9583bc14 | 1733 | &ctx->xout->odp_actions, |
4e022ec0 | 1734 | &ctx->xin->flow, ODPP_NONE); |
9583bc14 EJ |
1735 | ctx->sflow_odp_port = 0; |
1736 | ctx->sflow_n_outputs = 0; | |
1737 | } | |
1738 | ||
1739 | /* SAMPLE action for IPFIX must be 1st or 2nd action in any given list | |
1740 | * of actions, eventually after the SAMPLE action for sFlow. */ | |
1741 | static void | |
1742 | add_ipfix_action(struct xlate_ctx *ctx) | |
1743 | { | |
46c88433 | 1744 | compose_ipfix_action(ctx->xbridge, &ctx->xout->odp_actions, |
9583bc14 EJ |
1745 | &ctx->xin->flow); |
1746 | } | |
1747 | ||
1748 | /* Fix SAMPLE action according to data collected while composing ODP actions. | |
1749 | * We need to fix SAMPLE actions OVS_SAMPLE_ATTR_ACTIONS attribute, i.e. nested | |
1750 | * USERSPACE action's user-cookie which is required for sflow. */ | |
1751 | static void | |
1752 | fix_sflow_action(struct xlate_ctx *ctx) | |
1753 | { | |
1754 | const struct flow *base = &ctx->base_flow; | |
1755 | union user_action_cookie *cookie; | |
1756 | ||
1757 | if (!ctx->user_cookie_offset) { | |
1758 | return; | |
1759 | } | |
1760 | ||
1761 | cookie = ofpbuf_at(&ctx->xout->odp_actions, ctx->user_cookie_offset, | |
1762 | sizeof cookie->sflow); | |
1763 | ovs_assert(cookie->type == USER_ACTION_COOKIE_SFLOW); | |
1764 | ||
46c88433 | 1765 | compose_sflow_cookie(ctx->xbridge, base->vlan_tci, |
9583bc14 EJ |
1766 | ctx->sflow_odp_port, ctx->sflow_n_outputs, cookie); |
1767 | } | |
1768 | ||
db7d4e46 | 1769 | static enum slow_path_reason |
642dc74d | 1770 | process_special(struct xlate_ctx *ctx, const struct flow *flow, |
46c88433 | 1771 | const struct xport *xport, const struct ofpbuf *packet) |
db7d4e46 | 1772 | { |
642dc74d | 1773 | struct flow_wildcards *wc = &ctx->xout->wc; |
46c88433 | 1774 | const struct xbridge *xbridge = ctx->xbridge; |
642dc74d | 1775 | |
46c88433 | 1776 | if (!xport) { |
db7d4e46 | 1777 | return 0; |
46c88433 | 1778 | } else if (xport->cfm && cfm_should_process_flow(xport->cfm, flow, wc)) { |
db7d4e46 | 1779 | if (packet) { |
46c88433 | 1780 | cfm_process_heartbeat(xport->cfm, packet); |
db7d4e46 JP |
1781 | } |
1782 | return SLOW_CFM; | |
fab52e16 | 1783 | } else if (xport->bfd && bfd_should_process_flow(xport->bfd, flow, wc)) { |
db7d4e46 | 1784 | if (packet) { |
46c88433 | 1785 | bfd_process_packet(xport->bfd, flow, packet); |
60d02c72 AW |
1786 | /* If POLL received, immediately sends FINAL back. */ |
1787 | if (bfd_should_send_packet(xport->bfd)) { | |
6d308b28 | 1788 | ofproto_dpif_monitor_port_send_soon(xport->ofport); |
60d02c72 | 1789 | } |
db7d4e46 JP |
1790 | } |
1791 | return SLOW_BFD; | |
46c88433 | 1792 | } else if (xport->xbundle && xport->xbundle->lacp |
db7d4e46 JP |
1793 | && flow->dl_type == htons(ETH_TYPE_LACP)) { |
1794 | if (packet) { | |
46c88433 | 1795 | lacp_process_packet(xport->xbundle->lacp, xport->ofport, packet); |
db7d4e46 JP |
1796 | } |
1797 | return SLOW_LACP; | |
9d189a50 | 1798 | } else if (xbridge->stp && stp_should_process_flow(flow, wc)) { |
db7d4e46 | 1799 | if (packet) { |
9d189a50 | 1800 | stp_process_packet(xport, packet); |
db7d4e46 JP |
1801 | } |
1802 | return SLOW_STP; | |
1803 | } else { | |
1804 | return 0; | |
1805 | } | |
1806 | } | |
1807 | ||
9583bc14 | 1808 | static void |
4e022ec0 | 1809 | compose_output_action__(struct xlate_ctx *ctx, ofp_port_t ofp_port, |
9583bc14 EJ |
1810 | bool check_stp) |
1811 | { | |
46c88433 | 1812 | const struct xport *xport = get_ofp_port(ctx->xbridge, ofp_port); |
1dd35f8a | 1813 | struct flow_wildcards *wc = &ctx->xout->wc; |
33bf9176 | 1814 | struct flow *flow = &ctx->xin->flow; |
9583bc14 | 1815 | ovs_be16 flow_vlan_tci; |
1362e248 | 1816 | uint32_t flow_pkt_mark; |
9583bc14 | 1817 | uint8_t flow_nw_tos; |
4e022ec0 | 1818 | odp_port_t out_port, odp_port; |
ca077186 | 1819 | uint8_t dscp; |
9583bc14 EJ |
1820 | |
1821 | /* If 'struct flow' gets additional metadata, we'll need to zero it out | |
1822 | * before traversing a patch port. */ | |
419681da | 1823 | BUILD_ASSERT_DECL(FLOW_WC_SEQ == 26); |
9583bc14 | 1824 | |
46c88433 | 1825 | if (!xport) { |
9583bc14 EJ |
1826 | xlate_report(ctx, "Nonexistent output port"); |
1827 | return; | |
46c88433 | 1828 | } else if (xport->config & OFPUTIL_PC_NO_FWD) { |
9583bc14 EJ |
1829 | xlate_report(ctx, "OFPPC_NO_FWD set, skipping output"); |
1830 | return; | |
0d1cee12 | 1831 | } else if (check_stp) { |
bbbca389 | 1832 | if (is_stp(&ctx->base_flow)) { |
0d1cee12 K |
1833 | if (!xport_stp_listen_state(xport)) { |
1834 | xlate_report(ctx, "STP not in listening state, " | |
1835 | "skipping bpdu output"); | |
1836 | return; | |
1837 | } | |
1838 | } else if (!xport_stp_forward_state(xport)) { | |
1839 | xlate_report(ctx, "STP not in forwarding state, " | |
1840 | "skipping output"); | |
1841 | return; | |
1842 | } | |
9583bc14 EJ |
1843 | } |
1844 | ||
46c88433 EJ |
1845 | if (mbridge_has_mirrors(ctx->xbridge->mbridge) && xport->xbundle) { |
1846 | ctx->xout->mirrors |= xbundle_mirror_dst(xport->xbundle->xbridge, | |
1847 | xport->xbundle); | |
cdf5d3a5 EJ |
1848 | } |
1849 | ||
46c88433 EJ |
1850 | if (xport->peer) { |
1851 | const struct xport *peer = xport->peer; | |
9583bc14 | 1852 | struct flow old_flow = ctx->xin->flow; |
9583bc14 | 1853 | enum slow_path_reason special; |
9583bc14 | 1854 | |
46c88433 EJ |
1855 | ctx->xbridge = peer->xbridge; |
1856 | flow->in_port.ofp_port = peer->ofp_port; | |
33bf9176 BP |
1857 | flow->metadata = htonll(0); |
1858 | memset(&flow->tunnel, 0, sizeof flow->tunnel); | |
1859 | memset(flow->regs, 0, sizeof flow->regs); | |
9583bc14 | 1860 | |
642dc74d | 1861 | special = process_special(ctx, &ctx->xin->flow, peer, |
9583bc14 EJ |
1862 | ctx->xin->packet); |
1863 | if (special) { | |
04594cd5 | 1864 | ctx->xout->slow |= special; |
ddd3c975 | 1865 | } else if (may_receive(peer, ctx)) { |
9d189a50 | 1866 | if (xport_stp_forward_state(peer)) { |
6d328fa2 | 1867 | xlate_table_action(ctx, flow->in_port.ofp_port, 0, true, true); |
9583bc14 EJ |
1868 | } else { |
1869 | /* Forwarding is disabled by STP. Let OFPP_NORMAL and the | |
1870 | * learning action look at the packet, then drop it. */ | |
1871 | struct flow old_base_flow = ctx->base_flow; | |
1f317cb5 | 1872 | size_t old_size = ofpbuf_size(&ctx->xout->odp_actions); |
cdf5d3a5 | 1873 | mirror_mask_t old_mirrors = ctx->xout->mirrors; |
6d328fa2 | 1874 | xlate_table_action(ctx, flow->in_port.ofp_port, 0, true, true); |
cdf5d3a5 | 1875 | ctx->xout->mirrors = old_mirrors; |
9583bc14 | 1876 | ctx->base_flow = old_base_flow; |
1f317cb5 | 1877 | ofpbuf_set_size(&ctx->xout->odp_actions, old_size); |
9583bc14 EJ |
1878 | } |
1879 | } | |
1880 | ||
1881 | ctx->xin->flow = old_flow; | |
832554e3 | 1882 | ctx->xbridge = xport->xbridge; |
9583bc14 EJ |
1883 | |
1884 | if (ctx->xin->resubmit_stats) { | |
46c88433 EJ |
1885 | netdev_vport_inc_tx(xport->netdev, ctx->xin->resubmit_stats); |
1886 | netdev_vport_inc_rx(peer->netdev, ctx->xin->resubmit_stats); | |
a1aeea86 AW |
1887 | if (peer->bfd) { |
1888 | bfd_account_rx(peer->bfd, ctx->xin->resubmit_stats); | |
1889 | } | |
9583bc14 | 1890 | } |
b256dc52 JS |
1891 | if (ctx->xin->xcache) { |
1892 | struct xc_entry *entry; | |
1893 | ||
1894 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_NETDEV); | |
1895 | entry->u.dev.tx = netdev_ref(xport->netdev); | |
1896 | entry->u.dev.rx = netdev_ref(peer->netdev); | |
1897 | entry->u.dev.bfd = bfd_ref(peer->bfd); | |
1898 | } | |
9583bc14 EJ |
1899 | |
1900 | return; | |
1901 | } | |
1902 | ||
33bf9176 | 1903 | flow_vlan_tci = flow->vlan_tci; |
1362e248 | 1904 | flow_pkt_mark = flow->pkt_mark; |
33bf9176 | 1905 | flow_nw_tos = flow->nw_tos; |
9583bc14 | 1906 | |
55954f6e | 1907 | if (dscp_from_skb_priority(xport, flow->skb_priority, &dscp)) { |
1ac9326d | 1908 | wc->masks.nw_tos |= IP_DSCP_MASK; |
33bf9176 | 1909 | flow->nw_tos &= ~IP_DSCP_MASK; |
ca077186 | 1910 | flow->nw_tos |= dscp; |
9583bc14 EJ |
1911 | } |
1912 | ||
46c88433 | 1913 | if (xport->is_tunnel) { |
9583bc14 EJ |
1914 | /* Save tunnel metadata so that changes made due to |
1915 | * the Logical (tunnel) Port are not visible for any further | |
1916 | * matches, while explicit set actions on tunnel metadata are. | |
1917 | */ | |
33bf9176 | 1918 | struct flow_tnl flow_tnl = flow->tunnel; |
46c88433 | 1919 | odp_port = tnl_port_send(xport->ofport, flow, &ctx->xout->wc); |
4e022ec0 | 1920 | if (odp_port == ODPP_NONE) { |
9583bc14 EJ |
1921 | xlate_report(ctx, "Tunneling decided against output"); |
1922 | goto out; /* restore flow_nw_tos */ | |
1923 | } | |
33bf9176 | 1924 | if (flow->tunnel.ip_dst == ctx->orig_tunnel_ip_dst) { |
9583bc14 EJ |
1925 | xlate_report(ctx, "Not tunneling to our own address"); |
1926 | goto out; /* restore flow_nw_tos */ | |
1927 | } | |
1928 | if (ctx->xin->resubmit_stats) { | |
46c88433 | 1929 | netdev_vport_inc_tx(xport->netdev, ctx->xin->resubmit_stats); |
9583bc14 | 1930 | } |
b256dc52 JS |
1931 | if (ctx->xin->xcache) { |
1932 | struct xc_entry *entry; | |
1933 | ||
1934 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_NETDEV); | |
1935 | entry->u.dev.tx = netdev_ref(xport->netdev); | |
1936 | } | |
9583bc14 | 1937 | out_port = odp_port; |
33bf9176 | 1938 | commit_odp_tunnel_action(flow, &ctx->base_flow, |
9583bc14 | 1939 | &ctx->xout->odp_actions); |
33bf9176 | 1940 | flow->tunnel = flow_tnl; /* Restore tunnel metadata */ |
9583bc14 | 1941 | } else { |
46c88433 | 1942 | odp_port = xport->odp_port; |
7614e5d0 | 1943 | out_port = odp_port; |
46c88433 | 1944 | if (ofproto_has_vlan_splinters(ctx->xbridge->ofproto)) { |
7614e5d0 JR |
1945 | ofp_port_t vlandev_port; |
1946 | ||
1dd35f8a | 1947 | wc->masks.vlan_tci |= htons(VLAN_VID_MASK | VLAN_CFI); |
7614e5d0 JR |
1948 | vlandev_port = vsp_realdev_to_vlandev(ctx->xbridge->ofproto, |
1949 | ofp_port, flow->vlan_tci); | |
1950 | if (vlandev_port != ofp_port) { | |
1951 | out_port = ofp_port_to_odp_port(ctx->xbridge, vlandev_port); | |
1952 | flow->vlan_tci = htons(0); | |
1953 | } | |
9583bc14 | 1954 | } |
9583bc14 | 1955 | } |
9583bc14 | 1956 | |
4e022ec0 | 1957 | if (out_port != ODPP_NONE) { |
7fd91025 BP |
1958 | ctx->xout->slow |= commit_odp_actions(flow, &ctx->base_flow, |
1959 | &ctx->xout->odp_actions, | |
8bfd0fda | 1960 | &ctx->xout->wc); |
adcf00ba | 1961 | |
92c08f09 | 1962 | if (ctx->use_recirc) { |
347bf289 | 1963 | struct ovs_action_hash *act_hash; |
92c08f09 | 1964 | struct xlate_recirc *xr = &ctx->recirc; |
adcf00ba | 1965 | |
347bf289 AZ |
1966 | /* Hash action. */ |
1967 | act_hash = nl_msg_put_unspec_uninit(&ctx->xout->odp_actions, | |
1968 | OVS_ACTION_ATTR_HASH, | |
1969 | sizeof *act_hash); | |
1970 | act_hash->hash_alg = xr->hash_alg; | |
62ac1f20 | 1971 | act_hash->hash_basis = xr->hash_basis; |
347bf289 AZ |
1972 | |
1973 | /* Recirc action. */ | |
1974 | nl_msg_put_u32(&ctx->xout->odp_actions, OVS_ACTION_ATTR_RECIRC, | |
1975 | xr->recirc_id); | |
adcf00ba AZ |
1976 | } else { |
1977 | nl_msg_put_odp_port(&ctx->xout->odp_actions, OVS_ACTION_ATTR_OUTPUT, | |
1978 | out_port); | |
1979 | } | |
9583bc14 | 1980 | |
6cbbf4fa EJ |
1981 | ctx->sflow_odp_port = odp_port; |
1982 | ctx->sflow_n_outputs++; | |
1983 | ctx->xout->nf_output_iface = ofp_port; | |
1984 | } | |
1985 | ||
1986 | out: | |
9583bc14 | 1987 | /* Restore flow */ |
33bf9176 | 1988 | flow->vlan_tci = flow_vlan_tci; |
1362e248 | 1989 | flow->pkt_mark = flow_pkt_mark; |
33bf9176 | 1990 | flow->nw_tos = flow_nw_tos; |
9583bc14 EJ |
1991 | } |
1992 | ||
1993 | static void | |
4e022ec0 | 1994 | compose_output_action(struct xlate_ctx *ctx, ofp_port_t ofp_port) |
9583bc14 EJ |
1995 | { |
1996 | compose_output_action__(ctx, ofp_port, true); | |
1997 | } | |
1998 | ||
bb61b33d BP |
1999 | static void |
2000 | xlate_recursively(struct xlate_ctx *ctx, struct rule_dpif *rule) | |
bb61b33d BP |
2001 | { |
2002 | struct rule_dpif *old_rule = ctx->rule; | |
dc723c44 | 2003 | const struct rule_actions *actions; |
bb61b33d BP |
2004 | |
2005 | if (ctx->xin->resubmit_stats) { | |
70742c7f | 2006 | rule_dpif_credit_stats(rule, ctx->xin->resubmit_stats); |
bb61b33d BP |
2007 | } |
2008 | ||
98b07853 | 2009 | ctx->resubmits++; |
bb61b33d BP |
2010 | ctx->recurse++; |
2011 | ctx->rule = rule; | |
6f00e29b BP |
2012 | actions = rule_dpif_get_actions(rule); |
2013 | do_xlate_actions(actions->ofpacts, actions->ofpacts_len, ctx); | |
bb61b33d BP |
2014 | ctx->rule = old_rule; |
2015 | ctx->recurse--; | |
bb61b33d BP |
2016 | } |
2017 | ||
bd3240ba SH |
2018 | static bool |
2019 | xlate_resubmit_resource_check(struct xlate_ctx *ctx) | |
9583bc14 | 2020 | { |
98b07853 BP |
2021 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); |
2022 | ||
adcf00ba | 2023 | if (ctx->recurse >= MAX_RESUBMIT_RECURSION + MAX_INTERNAL_RESUBMITS) { |
98b07853 BP |
2024 | VLOG_ERR_RL(&rl, "resubmit actions recursed over %d times", |
2025 | MAX_RESUBMIT_RECURSION); | |
adcf00ba | 2026 | } else if (ctx->resubmits >= MAX_RESUBMITS + MAX_INTERNAL_RESUBMITS) { |
98b07853 | 2027 | VLOG_ERR_RL(&rl, "over %d resubmit actions", MAX_RESUBMITS); |
1f317cb5 | 2028 | } else if (ofpbuf_size(&ctx->xout->odp_actions) > UINT16_MAX) { |
98b07853 | 2029 | VLOG_ERR_RL(&rl, "resubmits yielded over 64 kB of actions"); |
1f317cb5 | 2030 | } else if (ofpbuf_size(&ctx->stack) >= 65536) { |
98b07853 BP |
2031 | VLOG_ERR_RL(&rl, "resubmits yielded over 64 kB of stack"); |
2032 | } else { | |
bd3240ba SH |
2033 | return true; |
2034 | } | |
2035 | ||
2036 | return false; | |
2037 | } | |
2038 | ||
2039 | static void | |
6d328fa2 SH |
2040 | xlate_table_action(struct xlate_ctx *ctx, ofp_port_t in_port, uint8_t table_id, |
2041 | bool may_packet_in, bool honor_table_miss) | |
bd3240ba SH |
2042 | { |
2043 | if (xlate_resubmit_resource_check(ctx)) { | |
4e022ec0 | 2044 | ofp_port_t old_in_port = ctx->xin->flow.in_port.ofp_port; |
3f207910 | 2045 | bool skip_wildcards = ctx->xin->skip_wildcards; |
9583bc14 | 2046 | uint8_t old_table_id = ctx->table_id; |
3f207910 | 2047 | struct rule_dpif *rule; |
6d328fa2 SH |
2048 | enum rule_dpif_lookup_verdict verdict; |
2049 | enum ofputil_port_config config = 0; | |
9583bc14 EJ |
2050 | |
2051 | ctx->table_id = table_id; | |
2052 | ||
bb61b33d BP |
2053 | /* Look up a flow with 'in_port' as the input port. Then restore the |
2054 | * original input port (otherwise OFPP_NORMAL and OFPP_IN_PORT will | |
2055 | * have surprising behavior). */ | |
4e022ec0 | 2056 | ctx->xin->flow.in_port.ofp_port = in_port; |
6d328fa2 SH |
2057 | verdict = rule_dpif_lookup_from_table(ctx->xbridge->ofproto, |
2058 | &ctx->xin->flow, | |
2059 | !skip_wildcards | |
2060 | ? &ctx->xout->wc : NULL, | |
2061 | honor_table_miss, | |
83709dfa JR |
2062 | &ctx->table_id, &rule, |
2063 | ctx->xin->xcache != NULL); | |
4e022ec0 | 2064 | ctx->xin->flow.in_port.ofp_port = old_in_port; |
9583bc14 | 2065 | |
ad3efdcb EJ |
2066 | if (ctx->xin->resubmit_hook) { |
2067 | ctx->xin->resubmit_hook(ctx->xin, rule, ctx->recurse); | |
2068 | } | |
2069 | ||
6d328fa2 SH |
2070 | switch (verdict) { |
2071 | case RULE_DPIF_LOOKUP_VERDICT_MATCH: | |
2072 | goto match; | |
2073 | case RULE_DPIF_LOOKUP_VERDICT_CONTROLLER: | |
2074 | if (may_packet_in) { | |
2075 | struct xport *xport; | |
2076 | ||
2077 | xport = get_ofp_port(ctx->xbridge, | |
2078 | ctx->xin->flow.in_port.ofp_port); | |
2079 | config = xport ? xport->config : 0; | |
2080 | break; | |
2081 | } | |
2082 | /* Fall through to drop */ | |
2083 | case RULE_DPIF_LOOKUP_VERDICT_DROP: | |
2084 | config = OFPUTIL_PC_NO_PACKET_IN; | |
2085 | break; | |
6b83a3c5 SH |
2086 | case RULE_DPIF_LOOKUP_VERDICT_DEFAULT: |
2087 | if (!ofproto_dpif_wants_packet_in_on_miss(ctx->xbridge->ofproto)) { | |
2088 | config = OFPUTIL_PC_NO_PACKET_IN; | |
2089 | } | |
2090 | break; | |
6d328fa2 SH |
2091 | default: |
2092 | OVS_NOT_REACHED(); | |
a2143702 | 2093 | } |
6d328fa2 SH |
2094 | |
2095 | choose_miss_rule(config, ctx->xbridge->miss_rule, | |
83709dfa JR |
2096 | ctx->xbridge->no_packet_in_rule, &rule, |
2097 | ctx->xin->xcache != NULL); | |
6d328fa2 SH |
2098 | |
2099 | match: | |
a2143702 | 2100 | if (rule) { |
83709dfa JR |
2101 | /* Fill in the cache entry here instead of xlate_recursively |
2102 | * to make the reference counting more explicit. We take a | |
2103 | * reference in the lookups above if we are going to cache the | |
2104 | * rule. */ | |
2105 | if (ctx->xin->xcache) { | |
2106 | struct xc_entry *entry; | |
2107 | ||
2108 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_RULE); | |
2109 | entry->u.rule = rule; | |
2110 | } | |
bb61b33d | 2111 | xlate_recursively(ctx, rule); |
ad3efdcb EJ |
2112 | } |
2113 | ||
9583bc14 | 2114 | ctx->table_id = old_table_id; |
98b07853 | 2115 | return; |
9583bc14 | 2116 | } |
98b07853 BP |
2117 | |
2118 | ctx->exit = true; | |
9583bc14 EJ |
2119 | } |
2120 | ||
f4fb341b SH |
2121 | static void |
2122 | xlate_group_bucket(struct xlate_ctx *ctx, const struct ofputil_bucket *bucket) | |
2123 | { | |
2124 | uint64_t action_list_stub[1024 / 8]; | |
2125 | struct ofpbuf action_list, action_set; | |
2126 | ||
2127 | ofpbuf_use_const(&action_set, bucket->ofpacts, bucket->ofpacts_len); | |
2128 | ofpbuf_use_stub(&action_list, action_list_stub, sizeof action_list_stub); | |
2129 | ||
2130 | ofpacts_execute_action_set(&action_list, &action_set); | |
2131 | ctx->recurse++; | |
1f317cb5 | 2132 | do_xlate_actions(ofpbuf_data(&action_list), ofpbuf_size(&action_list), ctx); |
f4fb341b SH |
2133 | ctx->recurse--; |
2134 | ||
2135 | ofpbuf_uninit(&action_set); | |
2136 | ofpbuf_uninit(&action_list); | |
2137 | } | |
2138 | ||
2139 | static void | |
2140 | xlate_all_group(struct xlate_ctx *ctx, struct group_dpif *group) | |
2141 | { | |
2142 | const struct ofputil_bucket *bucket; | |
2143 | const struct list *buckets; | |
2144 | struct flow old_flow = ctx->xin->flow; | |
2145 | ||
2146 | group_dpif_get_buckets(group, &buckets); | |
2147 | ||
2148 | LIST_FOR_EACH (bucket, list_node, buckets) { | |
2149 | xlate_group_bucket(ctx, bucket); | |
2150 | /* Roll back flow to previous state. | |
2151 | * This is equivalent to cloning the packet for each bucket. | |
2152 | * | |
2153 | * As a side effect any subsequently applied actions will | |
2154 | * also effectively be applied to a clone of the packet taken | |
2155 | * just before applying the all or indirect group. */ | |
2156 | ctx->xin->flow = old_flow; | |
2157 | } | |
2158 | } | |
2159 | ||
dd8cd4b4 SH |
2160 | static void |
2161 | xlate_ff_group(struct xlate_ctx *ctx, struct group_dpif *group) | |
2162 | { | |
2163 | const struct ofputil_bucket *bucket; | |
2164 | ||
2165 | bucket = group_first_live_bucket(ctx, group, 0); | |
2166 | if (bucket) { | |
2167 | xlate_group_bucket(ctx, bucket); | |
2168 | } | |
2169 | } | |
2170 | ||
fe7e5749 SH |
2171 | static void |
2172 | xlate_select_group(struct xlate_ctx *ctx, struct group_dpif *group) | |
2173 | { | |
2174 | struct flow_wildcards *wc = &ctx->xout->wc; | |
2175 | const struct ofputil_bucket *bucket; | |
2176 | uint32_t basis; | |
2177 | ||
7e36ac42 | 2178 | basis = hash_mac(ctx->xin->flow.dl_dst, 0, 0); |
fe7e5749 SH |
2179 | bucket = group_best_live_bucket(ctx, group, basis); |
2180 | if (bucket) { | |
2181 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); | |
2182 | xlate_group_bucket(ctx, bucket); | |
2183 | } | |
2184 | } | |
2185 | ||
f4fb341b SH |
2186 | static void |
2187 | xlate_group_action__(struct xlate_ctx *ctx, struct group_dpif *group) | |
2188 | { | |
5a070238 BP |
2189 | ctx->in_group = true; |
2190 | ||
f4fb341b SH |
2191 | switch (group_dpif_get_type(group)) { |
2192 | case OFPGT11_ALL: | |
2193 | case OFPGT11_INDIRECT: | |
2194 | xlate_all_group(ctx, group); | |
2195 | break; | |
2196 | case OFPGT11_SELECT: | |
fe7e5749 | 2197 | xlate_select_group(ctx, group); |
f4fb341b | 2198 | break; |
dd8cd4b4 SH |
2199 | case OFPGT11_FF: |
2200 | xlate_ff_group(ctx, group); | |
2201 | break; | |
f4fb341b | 2202 | default: |
428b2edd | 2203 | OVS_NOT_REACHED(); |
f4fb341b SH |
2204 | } |
2205 | group_dpif_release(group); | |
5a070238 BP |
2206 | |
2207 | ctx->in_group = false; | |
2208 | } | |
2209 | ||
2210 | static bool | |
2211 | xlate_group_resource_check(struct xlate_ctx *ctx) | |
2212 | { | |
2213 | if (!xlate_resubmit_resource_check(ctx)) { | |
2214 | return false; | |
2215 | } else if (ctx->in_group) { | |
2216 | /* Prevent nested translation of OpenFlow groups. | |
2217 | * | |
2218 | * OpenFlow allows this restriction. We enforce this restriction only | |
2219 | * because, with the current architecture, we would otherwise have to | |
2220 | * take a possibly recursive read lock on the ofgroup rwlock, which is | |
2221 | * unsafe given that POSIX allows taking a read lock to block if there | |
2222 | * is a thread blocked on taking the write lock. Other solutions | |
2223 | * without this restriction are also possible, but seem unwarranted | |
2224 | * given the current limited use of groups. */ | |
2225 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); | |
2226 | ||
2227 | VLOG_ERR_RL(&rl, "cannot recursively translate OpenFlow group"); | |
2228 | return false; | |
2229 | } else { | |
2230 | return true; | |
2231 | } | |
f4fb341b SH |
2232 | } |
2233 | ||
2234 | static bool | |
2235 | xlate_group_action(struct xlate_ctx *ctx, uint32_t group_id) | |
2236 | { | |
5a070238 | 2237 | if (xlate_group_resource_check(ctx)) { |
f4fb341b SH |
2238 | struct group_dpif *group; |
2239 | bool got_group; | |
2240 | ||
2241 | got_group = group_dpif_lookup(ctx->xbridge->ofproto, group_id, &group); | |
2242 | if (got_group) { | |
2243 | xlate_group_action__(ctx, group); | |
2244 | } else { | |
2245 | return true; | |
2246 | } | |
2247 | } | |
2248 | ||
2249 | return false; | |
2250 | } | |
2251 | ||
9583bc14 EJ |
2252 | static void |
2253 | xlate_ofpact_resubmit(struct xlate_ctx *ctx, | |
2254 | const struct ofpact_resubmit *resubmit) | |
2255 | { | |
4e022ec0 | 2256 | ofp_port_t in_port; |
9583bc14 | 2257 | uint8_t table_id; |
adcf00ba AZ |
2258 | bool may_packet_in = false; |
2259 | bool honor_table_miss = false; | |
2260 | ||
2261 | if (ctx->rule && rule_dpif_is_internal(ctx->rule)) { | |
2262 | /* Still allow missed packets to be sent to the controller | |
2263 | * if resubmitting from an internal table. */ | |
2264 | may_packet_in = true; | |
2265 | honor_table_miss = true; | |
2266 | } | |
9583bc14 EJ |
2267 | |
2268 | in_port = resubmit->in_port; | |
2269 | if (in_port == OFPP_IN_PORT) { | |
4e022ec0 | 2270 | in_port = ctx->xin->flow.in_port.ofp_port; |
9583bc14 EJ |
2271 | } |
2272 | ||
2273 | table_id = resubmit->table_id; | |
2274 | if (table_id == 255) { | |
2275 | table_id = ctx->table_id; | |
2276 | } | |
2277 | ||
adcf00ba AZ |
2278 | xlate_table_action(ctx, in_port, table_id, may_packet_in, |
2279 | honor_table_miss); | |
9583bc14 EJ |
2280 | } |
2281 | ||
2282 | static void | |
2283 | flood_packets(struct xlate_ctx *ctx, bool all) | |
2284 | { | |
46c88433 | 2285 | const struct xport *xport; |
9583bc14 | 2286 | |
46c88433 EJ |
2287 | HMAP_FOR_EACH (xport, ofp_node, &ctx->xbridge->xports) { |
2288 | if (xport->ofp_port == ctx->xin->flow.in_port.ofp_port) { | |
9583bc14 EJ |
2289 | continue; |
2290 | } | |
2291 | ||
2292 | if (all) { | |
46c88433 EJ |
2293 | compose_output_action__(ctx, xport->ofp_port, false); |
2294 | } else if (!(xport->config & OFPUTIL_PC_NO_FLOOD)) { | |
2295 | compose_output_action(ctx, xport->ofp_port); | |
9583bc14 EJ |
2296 | } |
2297 | } | |
2298 | ||
2299 | ctx->xout->nf_output_iface = NF_OUT_FLOOD; | |
2300 | } | |
2301 | ||
2302 | static void | |
2303 | execute_controller_action(struct xlate_ctx *ctx, int len, | |
2304 | enum ofp_packet_in_reason reason, | |
2305 | uint16_t controller_id) | |
2306 | { | |
0fb7792a | 2307 | struct ofproto_packet_in *pin; |
9583bc14 | 2308 | struct ofpbuf *packet; |
758c456d | 2309 | struct pkt_metadata md = PKT_METADATA_INITIALIZER(0); |
9583bc14 | 2310 | |
04594cd5 | 2311 | ctx->xout->slow |= SLOW_CONTROLLER; |
9583bc14 EJ |
2312 | if (!ctx->xin->packet) { |
2313 | return; | |
2314 | } | |
2315 | ||
2316 | packet = ofpbuf_clone(ctx->xin->packet); | |
2317 | ||
7fd91025 BP |
2318 | ctx->xout->slow |= commit_odp_actions(&ctx->xin->flow, &ctx->base_flow, |
2319 | &ctx->xout->odp_actions, | |
8bfd0fda | 2320 | &ctx->xout->wc); |
9583bc14 | 2321 | |
1f317cb5 PS |
2322 | odp_execute_actions(NULL, packet, false, &md, |
2323 | ofpbuf_data(&ctx->xout->odp_actions), | |
2324 | ofpbuf_size(&ctx->xout->odp_actions), NULL); | |
9583bc14 | 2325 | |
ada3a58d | 2326 | pin = xmalloc(sizeof *pin); |
1f317cb5 | 2327 | pin->up.packet_len = ofpbuf_size(packet); |
0fb7792a BP |
2328 | pin->up.packet = ofpbuf_steal_data(packet); |
2329 | pin->up.reason = reason; | |
0fb7792a | 2330 | pin->up.table_id = ctx->table_id; |
d4fa4e79 BP |
2331 | pin->up.cookie = (ctx->rule |
2332 | ? rule_dpif_get_flow_cookie(ctx->rule) | |
2333 | : OVS_BE64_MAX); | |
0fb7792a | 2334 | |
0fb7792a | 2335 | flow_get_metadata(&ctx->xin->flow, &pin->up.fmd); |
9583bc14 | 2336 | |
f11c7538 | 2337 | pin->controller_id = controller_id; |
d38a3c7b | 2338 | pin->send_len = len; |
32260212 SH |
2339 | /* If a rule is a table-miss rule then this is |
2340 | * a table-miss handled by a table-miss rule. | |
2341 | * | |
2342 | * Else, if rule is internal and has a controller action, | |
2343 | * the later being implied by the rule being processed here, | |
2344 | * then this is a table-miss handled without a table-miss rule. | |
2345 | * | |
2346 | * Otherwise this is not a table-miss. */ | |
2347 | pin->miss_type = OFPROTO_PACKET_IN_NO_MISS; | |
2348 | if (ctx->rule) { | |
2349 | if (rule_dpif_is_table_miss(ctx->rule)) { | |
2350 | pin->miss_type = OFPROTO_PACKET_IN_MISS_FLOW; | |
2351 | } else if (rule_dpif_is_internal(ctx->rule)) { | |
2352 | pin->miss_type = OFPROTO_PACKET_IN_MISS_WITHOUT_FLOW; | |
2353 | } | |
2354 | } | |
ada3a58d | 2355 | ofproto_dpif_send_packet_in(ctx->xbridge->ofproto, pin); |
9583bc14 EJ |
2356 | ofpbuf_delete(packet); |
2357 | } | |
2358 | ||
8bfd0fda BP |
2359 | static void |
2360 | compose_mpls_push_action(struct xlate_ctx *ctx, struct ofpact_push_mpls *mpls) | |
9583bc14 | 2361 | { |
33bf9176 BP |
2362 | struct flow_wildcards *wc = &ctx->xout->wc; |
2363 | struct flow *flow = &ctx->xin->flow; | |
8bfd0fda | 2364 | int n; |
33bf9176 | 2365 | |
8bfd0fda | 2366 | ovs_assert(eth_type_mpls(mpls->ethertype)); |
b0a17866 | 2367 | |
8bfd0fda BP |
2368 | n = flow_count_mpls_labels(flow, wc); |
2369 | if (!n) { | |
8bfd0fda BP |
2370 | ctx->xout->slow |= commit_odp_actions(flow, &ctx->base_flow, |
2371 | &ctx->xout->odp_actions, | |
2372 | &ctx->xout->wc); | |
2373 | } else if (n >= FLOW_MAX_MPLS_LABELS) { | |
2374 | if (ctx->xin->packet != NULL) { | |
2375 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
2376 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet on which an " | |
2377 | "MPLS push action can't be performed as it would " | |
2378 | "have more MPLS LSEs than the %d supported.", | |
2379 | ctx->xbridge->name, FLOW_MAX_MPLS_LABELS); | |
9583bc14 | 2380 | } |
8bfd0fda BP |
2381 | ctx->exit = true; |
2382 | return; | |
2383 | } else if (n >= ctx->xbridge->max_mpls_depth) { | |
2384 | COVERAGE_INC(xlate_actions_mpls_overflow); | |
2385 | ctx->xout->slow |= SLOW_ACTION; | |
9583bc14 | 2386 | } |
b0a17866 | 2387 | |
8bfd0fda | 2388 | flow_push_mpls(flow, n, mpls->ethertype, wc); |
9583bc14 EJ |
2389 | } |
2390 | ||
8bfd0fda | 2391 | static void |
9cfef3d0 | 2392 | compose_mpls_pop_action(struct xlate_ctx *ctx, ovs_be16 eth_type) |
9583bc14 | 2393 | { |
33bf9176 | 2394 | struct flow_wildcards *wc = &ctx->xout->wc; |
8bfd0fda BP |
2395 | struct flow *flow = &ctx->xin->flow; |
2396 | int n = flow_count_mpls_labels(flow, wc); | |
33bf9176 | 2397 | |
8bfd0fda BP |
2398 | if (!flow_pop_mpls(flow, n, eth_type, wc) && n >= FLOW_MAX_MPLS_LABELS) { |
2399 | if (ctx->xin->packet != NULL) { | |
2400 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
2401 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet on which an " | |
2402 | "MPLS pop action can't be performed as it has " | |
2403 | "more MPLS LSEs than the %d supported.", | |
2404 | ctx->xbridge->name, FLOW_MAX_MPLS_LABELS); | |
2405 | } | |
2406 | ctx->exit = true; | |
2407 | ofpbuf_clear(&ctx->xout->odp_actions); | |
9583bc14 EJ |
2408 | } |
2409 | } | |
2410 | ||
2411 | static bool | |
2412 | compose_dec_ttl(struct xlate_ctx *ctx, struct ofpact_cnt_ids *ids) | |
2413 | { | |
33bf9176 BP |
2414 | struct flow *flow = &ctx->xin->flow; |
2415 | ||
2416 | if (!is_ip_any(flow)) { | |
9583bc14 EJ |
2417 | return false; |
2418 | } | |
2419 | ||
1dd35f8a | 2420 | ctx->xout->wc.masks.nw_ttl = 0xff; |
33bf9176 BP |
2421 | if (flow->nw_ttl > 1) { |
2422 | flow->nw_ttl--; | |
9583bc14 EJ |
2423 | return false; |
2424 | } else { | |
2425 | size_t i; | |
2426 | ||
2427 | for (i = 0; i < ids->n_controllers; i++) { | |
2428 | execute_controller_action(ctx, UINT16_MAX, OFPR_INVALID_TTL, | |
2429 | ids->cnt_ids[i]); | |
2430 | } | |
2431 | ||
2432 | /* Stop processing for current table. */ | |
2433 | return true; | |
2434 | } | |
2435 | } | |
2436 | ||
8bfd0fda | 2437 | static void |
097d4939 JR |
2438 | compose_set_mpls_label_action(struct xlate_ctx *ctx, ovs_be32 label) |
2439 | { | |
8bfd0fda BP |
2440 | if (eth_type_mpls(ctx->xin->flow.dl_type)) { |
2441 | ctx->xout->wc.masks.mpls_lse[0] |= htonl(MPLS_LABEL_MASK); | |
2442 | set_mpls_lse_label(&ctx->xin->flow.mpls_lse[0], label); | |
097d4939 | 2443 | } |
097d4939 JR |
2444 | } |
2445 | ||
8bfd0fda | 2446 | static void |
097d4939 JR |
2447 | compose_set_mpls_tc_action(struct xlate_ctx *ctx, uint8_t tc) |
2448 | { | |
8bfd0fda BP |
2449 | if (eth_type_mpls(ctx->xin->flow.dl_type)) { |
2450 | ctx->xout->wc.masks.mpls_lse[0] |= htonl(MPLS_TC_MASK); | |
2451 | set_mpls_lse_tc(&ctx->xin->flow.mpls_lse[0], tc); | |
097d4939 | 2452 | } |
097d4939 JR |
2453 | } |
2454 | ||
8bfd0fda | 2455 | static void |
9cfef3d0 | 2456 | compose_set_mpls_ttl_action(struct xlate_ctx *ctx, uint8_t ttl) |
9583bc14 | 2457 | { |
8bfd0fda BP |
2458 | if (eth_type_mpls(ctx->xin->flow.dl_type)) { |
2459 | ctx->xout->wc.masks.mpls_lse[0] |= htonl(MPLS_TTL_MASK); | |
2460 | set_mpls_lse_ttl(&ctx->xin->flow.mpls_lse[0], ttl); | |
b0a17866 | 2461 | } |
9583bc14 EJ |
2462 | } |
2463 | ||
2464 | static bool | |
9cfef3d0 | 2465 | compose_dec_mpls_ttl_action(struct xlate_ctx *ctx) |
9583bc14 | 2466 | { |
33bf9176 | 2467 | struct flow *flow = &ctx->xin->flow; |
8bfd0fda | 2468 | uint8_t ttl = mpls_lse_to_ttl(flow->mpls_lse[0]); |
1dd35f8a JP |
2469 | struct flow_wildcards *wc = &ctx->xout->wc; |
2470 | ||
1dd35f8a | 2471 | memset(&wc->masks.mpls_lse, 0xff, sizeof wc->masks.mpls_lse); |
8bfd0fda BP |
2472 | if (eth_type_mpls(flow->dl_type)) { |
2473 | if (ttl > 1) { | |
2474 | ttl--; | |
2475 | set_mpls_lse_ttl(&flow->mpls_lse[0], ttl); | |
2476 | return false; | |
2477 | } else { | |
2478 | execute_controller_action(ctx, UINT16_MAX, OFPR_INVALID_TTL, 0); | |
9583bc14 | 2479 | |
8bfd0fda BP |
2480 | /* Stop processing for current table. */ |
2481 | return true; | |
2482 | } | |
9583bc14 | 2483 | } else { |
9583bc14 EJ |
2484 | return true; |
2485 | } | |
2486 | } | |
2487 | ||
2488 | static void | |
2489 | xlate_output_action(struct xlate_ctx *ctx, | |
4e022ec0 | 2490 | ofp_port_t port, uint16_t max_len, bool may_packet_in) |
9583bc14 | 2491 | { |
4e022ec0 | 2492 | ofp_port_t prev_nf_output_iface = ctx->xout->nf_output_iface; |
9583bc14 EJ |
2493 | |
2494 | ctx->xout->nf_output_iface = NF_OUT_DROP; | |
2495 | ||
2496 | switch (port) { | |
2497 | case OFPP_IN_PORT: | |
4e022ec0 | 2498 | compose_output_action(ctx, ctx->xin->flow.in_port.ofp_port); |
9583bc14 EJ |
2499 | break; |
2500 | case OFPP_TABLE: | |
4e022ec0 | 2501 | xlate_table_action(ctx, ctx->xin->flow.in_port.ofp_port, |
6d328fa2 | 2502 | 0, may_packet_in, true); |
9583bc14 EJ |
2503 | break; |
2504 | case OFPP_NORMAL: | |
2505 | xlate_normal(ctx); | |
2506 | break; | |
2507 | case OFPP_FLOOD: | |
2508 | flood_packets(ctx, false); | |
2509 | break; | |
2510 | case OFPP_ALL: | |
2511 | flood_packets(ctx, true); | |
2512 | break; | |
2513 | case OFPP_CONTROLLER: | |
2514 | execute_controller_action(ctx, max_len, OFPR_ACTION, 0); | |
2515 | break; | |
2516 | case OFPP_NONE: | |
2517 | break; | |
2518 | case OFPP_LOCAL: | |
2519 | default: | |
4e022ec0 | 2520 | if (port != ctx->xin->flow.in_port.ofp_port) { |
9583bc14 EJ |
2521 | compose_output_action(ctx, port); |
2522 | } else { | |
2523 | xlate_report(ctx, "skipping output to input port"); | |
2524 | } | |
2525 | break; | |
2526 | } | |
2527 | ||
2528 | if (prev_nf_output_iface == NF_OUT_FLOOD) { | |
2529 | ctx->xout->nf_output_iface = NF_OUT_FLOOD; | |
2530 | } else if (ctx->xout->nf_output_iface == NF_OUT_DROP) { | |
2531 | ctx->xout->nf_output_iface = prev_nf_output_iface; | |
2532 | } else if (prev_nf_output_iface != NF_OUT_DROP && | |
2533 | ctx->xout->nf_output_iface != NF_OUT_FLOOD) { | |
2534 | ctx->xout->nf_output_iface = NF_OUT_MULTI; | |
2535 | } | |
2536 | } | |
2537 | ||
2538 | static void | |
2539 | xlate_output_reg_action(struct xlate_ctx *ctx, | |
2540 | const struct ofpact_output_reg *or) | |
2541 | { | |
2542 | uint64_t port = mf_get_subfield(&or->src, &ctx->xin->flow); | |
2543 | if (port <= UINT16_MAX) { | |
2544 | union mf_subvalue value; | |
2545 | ||
2546 | memset(&value, 0xff, sizeof value); | |
2547 | mf_write_subfield_flow(&or->src, &value, &ctx->xout->wc.masks); | |
4e022ec0 AW |
2548 | xlate_output_action(ctx, u16_to_ofp(port), |
2549 | or->max_len, false); | |
9583bc14 EJ |
2550 | } |
2551 | } | |
2552 | ||
2553 | static void | |
2554 | xlate_enqueue_action(struct xlate_ctx *ctx, | |
2555 | const struct ofpact_enqueue *enqueue) | |
2556 | { | |
4e022ec0 | 2557 | ofp_port_t ofp_port = enqueue->port; |
9583bc14 EJ |
2558 | uint32_t queue_id = enqueue->queue; |
2559 | uint32_t flow_priority, priority; | |
2560 | int error; | |
2561 | ||
2562 | /* Translate queue to priority. */ | |
89a8a7f0 | 2563 | error = dpif_queue_to_priority(ctx->xbridge->dpif, queue_id, &priority); |
9583bc14 EJ |
2564 | if (error) { |
2565 | /* Fall back to ordinary output action. */ | |
2566 | xlate_output_action(ctx, enqueue->port, 0, false); | |
2567 | return; | |
2568 | } | |
2569 | ||
2570 | /* Check output port. */ | |
2571 | if (ofp_port == OFPP_IN_PORT) { | |
4e022ec0 AW |
2572 | ofp_port = ctx->xin->flow.in_port.ofp_port; |
2573 | } else if (ofp_port == ctx->xin->flow.in_port.ofp_port) { | |
9583bc14 EJ |
2574 | return; |
2575 | } | |
2576 | ||
2577 | /* Add datapath actions. */ | |
2578 | flow_priority = ctx->xin->flow.skb_priority; | |
2579 | ctx->xin->flow.skb_priority = priority; | |
2580 | compose_output_action(ctx, ofp_port); | |
2581 | ctx->xin->flow.skb_priority = flow_priority; | |
2582 | ||
2583 | /* Update NetFlow output port. */ | |
2584 | if (ctx->xout->nf_output_iface == NF_OUT_DROP) { | |
2585 | ctx->xout->nf_output_iface = ofp_port; | |
2586 | } else if (ctx->xout->nf_output_iface != NF_OUT_FLOOD) { | |
2587 | ctx->xout->nf_output_iface = NF_OUT_MULTI; | |
2588 | } | |
2589 | } | |
2590 | ||
2591 | static void | |
2592 | xlate_set_queue_action(struct xlate_ctx *ctx, uint32_t queue_id) | |
2593 | { | |
2594 | uint32_t skb_priority; | |
2595 | ||
89a8a7f0 | 2596 | if (!dpif_queue_to_priority(ctx->xbridge->dpif, queue_id, &skb_priority)) { |
9583bc14 EJ |
2597 | ctx->xin->flow.skb_priority = skb_priority; |
2598 | } else { | |
2599 | /* Couldn't translate queue to a priority. Nothing to do. A warning | |
2600 | * has already been logged. */ | |
2601 | } | |
2602 | } | |
2603 | ||
2604 | static bool | |
46c88433 | 2605 | slave_enabled_cb(ofp_port_t ofp_port, void *xbridge_) |
9583bc14 | 2606 | { |
46c88433 EJ |
2607 | const struct xbridge *xbridge = xbridge_; |
2608 | struct xport *port; | |
9583bc14 EJ |
2609 | |
2610 | switch (ofp_port) { | |
2611 | case OFPP_IN_PORT: | |
2612 | case OFPP_TABLE: | |
2613 | case OFPP_NORMAL: | |
2614 | case OFPP_FLOOD: | |
2615 | case OFPP_ALL: | |
2616 | case OFPP_NONE: | |
2617 | return true; | |
2618 | case OFPP_CONTROLLER: /* Not supported by the bundle action. */ | |
2619 | return false; | |
2620 | default: | |
46c88433 | 2621 | port = get_ofp_port(xbridge, ofp_port); |
9583bc14 EJ |
2622 | return port ? port->may_enable : false; |
2623 | } | |
2624 | } | |
2625 | ||
2626 | static void | |
2627 | xlate_bundle_action(struct xlate_ctx *ctx, | |
2628 | const struct ofpact_bundle *bundle) | |
2629 | { | |
4e022ec0 | 2630 | ofp_port_t port; |
9583bc14 EJ |
2631 | |
2632 | port = bundle_execute(bundle, &ctx->xin->flow, &ctx->xout->wc, | |
46c88433 EJ |
2633 | slave_enabled_cb, |
2634 | CONST_CAST(struct xbridge *, ctx->xbridge)); | |
9583bc14 | 2635 | if (bundle->dst.field) { |
f74e7df7 JP |
2636 | nxm_reg_load(&bundle->dst, ofp_to_u16(port), &ctx->xin->flow, |
2637 | &ctx->xout->wc); | |
9583bc14 EJ |
2638 | } else { |
2639 | xlate_output_action(ctx, port, 0, false); | |
2640 | } | |
2641 | } | |
2642 | ||
2643 | static void | |
2644 | xlate_learn_action(struct xlate_ctx *ctx, | |
2645 | const struct ofpact_learn *learn) | |
2646 | { | |
1b63b91e BP |
2647 | uint64_t ofpacts_stub[1024 / 8]; |
2648 | struct ofputil_flow_mod fm; | |
9583bc14 | 2649 | struct ofpbuf ofpacts; |
9583bc14 EJ |
2650 | |
2651 | ctx->xout->has_learn = true; | |
2652 | ||
2653 | learn_mask(learn, &ctx->xout->wc); | |
2654 | ||
2655 | if (!ctx->xin->may_learn) { | |
2656 | return; | |
2657 | } | |
2658 | ||
1b63b91e BP |
2659 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); |
2660 | learn_execute(learn, &ctx->xin->flow, &fm, &ofpacts); | |
2661 | ofproto_dpif_flow_mod(ctx->xbridge->ofproto, &fm); | |
2662 | ofpbuf_uninit(&ofpacts); | |
b256dc52 JS |
2663 | |
2664 | if (ctx->xin->xcache) { | |
2665 | struct xc_entry *entry; | |
2666 | ||
2667 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_LEARN); | |
2668 | entry->u.learn.ofproto = ctx->xin->ofproto; | |
83709dfa JR |
2669 | /* Lookup the learned rule, taking a reference on it. The reference |
2670 | * is released when this cache entry is deleted. */ | |
b256dc52 | 2671 | rule_dpif_lookup(ctx->xbridge->ofproto, &ctx->xin->flow, NULL, |
1a7c0cd7 | 2672 | &entry->u.learn.rule, true); |
b256dc52 JS |
2673 | } |
2674 | } | |
2675 | ||
2676 | static void | |
2677 | xlate_fin_timeout__(struct rule_dpif *rule, uint16_t tcp_flags, | |
2678 | uint16_t idle_timeout, uint16_t hard_timeout) | |
2679 | { | |
2680 | if (tcp_flags & (TCP_FIN | TCP_RST)) { | |
2681 | rule_dpif_reduce_timeouts(rule, idle_timeout, hard_timeout); | |
2682 | } | |
9583bc14 EJ |
2683 | } |
2684 | ||
9583bc14 EJ |
2685 | static void |
2686 | xlate_fin_timeout(struct xlate_ctx *ctx, | |
2687 | const struct ofpact_fin_timeout *oft) | |
2688 | { | |
b256dc52 JS |
2689 | if (ctx->rule) { |
2690 | xlate_fin_timeout__(ctx->rule, ctx->xin->tcp_flags, | |
2691 | oft->fin_idle_timeout, oft->fin_hard_timeout); | |
2692 | if (ctx->xin->xcache) { | |
2693 | struct xc_entry *entry; | |
2694 | ||
2695 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_FIN_TIMEOUT); | |
83709dfa JR |
2696 | /* XC_RULE already holds a reference on the rule, none is taken |
2697 | * here. */ | |
b256dc52 JS |
2698 | entry->u.fin.rule = ctx->rule; |
2699 | entry->u.fin.idle = oft->fin_idle_timeout; | |
2700 | entry->u.fin.hard = oft->fin_hard_timeout; | |
b256dc52 | 2701 | } |
9583bc14 EJ |
2702 | } |
2703 | } | |
2704 | ||
2705 | static void | |
2706 | xlate_sample_action(struct xlate_ctx *ctx, | |
2707 | const struct ofpact_sample *os) | |
2708 | { | |
2709 | union user_action_cookie cookie; | |
2710 | /* Scale the probability from 16-bit to 32-bit while representing | |
2711 | * the same percentage. */ | |
2712 | uint32_t probability = (os->probability << 16) | os->probability; | |
2713 | ||
4b97b70d BP |
2714 | if (!ctx->xbridge->variable_length_userdata) { |
2715 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); | |
2716 | ||
2717 | VLOG_ERR_RL(&rl, "ignoring NXAST_SAMPLE action because datapath " | |
2718 | "lacks support (needs Linux 3.10+ or kernel module from " | |
2719 | "OVS 1.11+)"); | |
2720 | return; | |
2721 | } | |
2722 | ||
7fd91025 BP |
2723 | ctx->xout->slow |= commit_odp_actions(&ctx->xin->flow, &ctx->base_flow, |
2724 | &ctx->xout->odp_actions, | |
8bfd0fda | 2725 | &ctx->xout->wc); |
9583bc14 EJ |
2726 | |
2727 | compose_flow_sample_cookie(os->probability, os->collector_set_id, | |
2728 | os->obs_domain_id, os->obs_point_id, &cookie); | |
46c88433 | 2729 | compose_sample_action(ctx->xbridge, &ctx->xout->odp_actions, &ctx->xin->flow, |
9583bc14 EJ |
2730 | probability, &cookie, sizeof cookie.flow_sample); |
2731 | } | |
2732 | ||
2733 | static bool | |
46c88433 | 2734 | may_receive(const struct xport *xport, struct xlate_ctx *ctx) |
9583bc14 | 2735 | { |
bbbca389 | 2736 | if (xport->config & (is_stp(&ctx->xin->flow) |
46c88433 EJ |
2737 | ? OFPUTIL_PC_NO_RECV_STP |
2738 | : OFPUTIL_PC_NO_RECV)) { | |
9583bc14 EJ |
2739 | return false; |
2740 | } | |
2741 | ||
2742 | /* Only drop packets here if both forwarding and learning are | |
2743 | * disabled. If just learning is enabled, we need to have | |
2744 | * OFPP_NORMAL and the learning action have a look at the packet | |
2745 | * before we can drop it. */ | |
9d189a50 | 2746 | if (!xport_stp_forward_state(xport) && !xport_stp_learn_state(xport)) { |
9583bc14 EJ |
2747 | return false; |
2748 | } | |
2749 | ||
2750 | return true; | |
2751 | } | |
2752 | ||
7fdb60a7 SH |
2753 | static void |
2754 | xlate_write_actions(struct xlate_ctx *ctx, const struct ofpact *a) | |
2755 | { | |
2756 | struct ofpact_nest *on = ofpact_get_WRITE_ACTIONS(a); | |
2757 | ofpbuf_put(&ctx->action_set, on->actions, ofpact_nest_get_action_len(on)); | |
2758 | ofpact_pad(&ctx->action_set); | |
2759 | } | |
2760 | ||
2761 | static void | |
2762 | xlate_action_set(struct xlate_ctx *ctx) | |
2763 | { | |
2764 | uint64_t action_list_stub[1024 / 64]; | |
2765 | struct ofpbuf action_list; | |
2766 | ||
2767 | ofpbuf_use_stub(&action_list, action_list_stub, sizeof action_list_stub); | |
2768 | ofpacts_execute_action_set(&action_list, &ctx->action_set); | |
1f317cb5 | 2769 | do_xlate_actions(ofpbuf_data(&action_list), ofpbuf_size(&action_list), ctx); |
7fdb60a7 SH |
2770 | ofpbuf_uninit(&action_list); |
2771 | } | |
2772 | ||
9583bc14 EJ |
2773 | static void |
2774 | do_xlate_actions(const struct ofpact *ofpacts, size_t ofpacts_len, | |
2775 | struct xlate_ctx *ctx) | |
2776 | { | |
33bf9176 BP |
2777 | struct flow_wildcards *wc = &ctx->xout->wc; |
2778 | struct flow *flow = &ctx->xin->flow; | |
9583bc14 EJ |
2779 | const struct ofpact *a; |
2780 | ||
f47ea021 JR |
2781 | /* dl_type already in the mask, not set below. */ |
2782 | ||
9583bc14 EJ |
2783 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { |
2784 | struct ofpact_controller *controller; | |
2785 | const struct ofpact_metadata *metadata; | |
b2dd70be JR |
2786 | const struct ofpact_set_field *set_field; |
2787 | const struct mf_field *mf; | |
9583bc14 EJ |
2788 | |
2789 | if (ctx->exit) { | |
2790 | break; | |
2791 | } | |
2792 | ||
2793 | switch (a->type) { | |
2794 | case OFPACT_OUTPUT: | |
2795 | xlate_output_action(ctx, ofpact_get_OUTPUT(a)->port, | |
2796 | ofpact_get_OUTPUT(a)->max_len, true); | |
2797 | break; | |
2798 | ||
7395c052 | 2799 | case OFPACT_GROUP: |
f4fb341b SH |
2800 | if (xlate_group_action(ctx, ofpact_get_GROUP(a)->group_id)) { |
2801 | return; | |
2802 | } | |
7395c052 NZ |
2803 | break; |
2804 | ||
9583bc14 EJ |
2805 | case OFPACT_CONTROLLER: |
2806 | controller = ofpact_get_CONTROLLER(a); | |
2807 | execute_controller_action(ctx, controller->max_len, | |
2808 | controller->reason, | |
2809 | controller->controller_id); | |
2810 | break; | |
2811 | ||
2812 | case OFPACT_ENQUEUE: | |
2813 | xlate_enqueue_action(ctx, ofpact_get_ENQUEUE(a)); | |
2814 | break; | |
2815 | ||
2816 | case OFPACT_SET_VLAN_VID: | |
f74e7df7 | 2817 | wc->masks.vlan_tci |= htons(VLAN_VID_MASK | VLAN_CFI); |
ca287d20 JR |
2818 | if (flow->vlan_tci & htons(VLAN_CFI) || |
2819 | ofpact_get_SET_VLAN_VID(a)->push_vlan_if_needed) { | |
2820 | flow->vlan_tci &= ~htons(VLAN_VID_MASK); | |
2821 | flow->vlan_tci |= (htons(ofpact_get_SET_VLAN_VID(a)->vlan_vid) | |
2822 | | htons(VLAN_CFI)); | |
2823 | } | |
9583bc14 EJ |
2824 | break; |
2825 | ||
2826 | case OFPACT_SET_VLAN_PCP: | |
f74e7df7 | 2827 | wc->masks.vlan_tci |= htons(VLAN_PCP_MASK | VLAN_CFI); |
ca287d20 JR |
2828 | if (flow->vlan_tci & htons(VLAN_CFI) || |
2829 | ofpact_get_SET_VLAN_PCP(a)->push_vlan_if_needed) { | |
2830 | flow->vlan_tci &= ~htons(VLAN_PCP_MASK); | |
2831 | flow->vlan_tci |= htons((ofpact_get_SET_VLAN_PCP(a)->vlan_pcp | |
2832 | << VLAN_PCP_SHIFT) | VLAN_CFI); | |
2833 | } | |
9583bc14 EJ |
2834 | break; |
2835 | ||
2836 | case OFPACT_STRIP_VLAN: | |
f74e7df7 | 2837 | memset(&wc->masks.vlan_tci, 0xff, sizeof wc->masks.vlan_tci); |
33bf9176 | 2838 | flow->vlan_tci = htons(0); |
9583bc14 EJ |
2839 | break; |
2840 | ||
2841 | case OFPACT_PUSH_VLAN: | |
2842 | /* XXX 802.1AD(QinQ) */ | |
f74e7df7 | 2843 | memset(&wc->masks.vlan_tci, 0xff, sizeof wc->masks.vlan_tci); |
33bf9176 | 2844 | flow->vlan_tci = htons(VLAN_CFI); |
9583bc14 EJ |
2845 | break; |
2846 | ||
2847 | case OFPACT_SET_ETH_SRC: | |
f74e7df7 | 2848 | memset(&wc->masks.dl_src, 0xff, sizeof wc->masks.dl_src); |
33bf9176 | 2849 | memcpy(flow->dl_src, ofpact_get_SET_ETH_SRC(a)->mac, ETH_ADDR_LEN); |
9583bc14 EJ |
2850 | break; |
2851 | ||
2852 | case OFPACT_SET_ETH_DST: | |
f74e7df7 | 2853 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); |
33bf9176 | 2854 | memcpy(flow->dl_dst, ofpact_get_SET_ETH_DST(a)->mac, ETH_ADDR_LEN); |
9583bc14 EJ |
2855 | break; |
2856 | ||
2857 | case OFPACT_SET_IPV4_SRC: | |
33bf9176 | 2858 | if (flow->dl_type == htons(ETH_TYPE_IP)) { |
f47ea021 | 2859 | memset(&wc->masks.nw_src, 0xff, sizeof wc->masks.nw_src); |
33bf9176 | 2860 | flow->nw_src = ofpact_get_SET_IPV4_SRC(a)->ipv4; |
9583bc14 EJ |
2861 | } |
2862 | break; | |
2863 | ||
2864 | case OFPACT_SET_IPV4_DST: | |
33bf9176 | 2865 | if (flow->dl_type == htons(ETH_TYPE_IP)) { |
f47ea021 | 2866 | memset(&wc->masks.nw_dst, 0xff, sizeof wc->masks.nw_dst); |
33bf9176 | 2867 | flow->nw_dst = ofpact_get_SET_IPV4_DST(a)->ipv4; |
9583bc14 EJ |
2868 | } |
2869 | break; | |
2870 | ||
04f01c24 BP |
2871 | case OFPACT_SET_IP_DSCP: |
2872 | if (is_ip_any(flow)) { | |
f47ea021 | 2873 | wc->masks.nw_tos |= IP_DSCP_MASK; |
33bf9176 | 2874 | flow->nw_tos &= ~IP_DSCP_MASK; |
04f01c24 | 2875 | flow->nw_tos |= ofpact_get_SET_IP_DSCP(a)->dscp; |
9583bc14 EJ |
2876 | } |
2877 | break; | |
2878 | ||
ff14eb7a JR |
2879 | case OFPACT_SET_IP_ECN: |
2880 | if (is_ip_any(flow)) { | |
2881 | wc->masks.nw_tos |= IP_ECN_MASK; | |
2882 | flow->nw_tos &= ~IP_ECN_MASK; | |
2883 | flow->nw_tos |= ofpact_get_SET_IP_ECN(a)->ecn; | |
2884 | } | |
2885 | break; | |
2886 | ||
0c20dbe4 JR |
2887 | case OFPACT_SET_IP_TTL: |
2888 | if (is_ip_any(flow)) { | |
2889 | wc->masks.nw_ttl = 0xff; | |
2890 | flow->nw_ttl = ofpact_get_SET_IP_TTL(a)->ttl; | |
2891 | } | |
2892 | break; | |
2893 | ||
9583bc14 | 2894 | case OFPACT_SET_L4_SRC_PORT: |
33bf9176 | 2895 | if (is_ip_any(flow)) { |
f47ea021 JR |
2896 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); |
2897 | memset(&wc->masks.tp_src, 0xff, sizeof wc->masks.tp_src); | |
33bf9176 | 2898 | flow->tp_src = htons(ofpact_get_SET_L4_SRC_PORT(a)->port); |
9583bc14 EJ |
2899 | } |
2900 | break; | |
2901 | ||
2902 | case OFPACT_SET_L4_DST_PORT: | |
33bf9176 | 2903 | if (is_ip_any(flow)) { |
f47ea021 JR |
2904 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); |
2905 | memset(&wc->masks.tp_dst, 0xff, sizeof wc->masks.tp_dst); | |
33bf9176 | 2906 | flow->tp_dst = htons(ofpact_get_SET_L4_DST_PORT(a)->port); |
9583bc14 EJ |
2907 | } |
2908 | break; | |
2909 | ||
2910 | case OFPACT_RESUBMIT: | |
2911 | xlate_ofpact_resubmit(ctx, ofpact_get_RESUBMIT(a)); | |
2912 | break; | |
2913 | ||
2914 | case OFPACT_SET_TUNNEL: | |
33bf9176 | 2915 | flow->tunnel.tun_id = htonll(ofpact_get_SET_TUNNEL(a)->tun_id); |
9583bc14 EJ |
2916 | break; |
2917 | ||
2918 | case OFPACT_SET_QUEUE: | |
2919 | xlate_set_queue_action(ctx, ofpact_get_SET_QUEUE(a)->queue_id); | |
2920 | break; | |
2921 | ||
2922 | case OFPACT_POP_QUEUE: | |
33bf9176 | 2923 | flow->skb_priority = ctx->orig_skb_priority; |
9583bc14 EJ |
2924 | break; |
2925 | ||
2926 | case OFPACT_REG_MOVE: | |
33bf9176 | 2927 | nxm_execute_reg_move(ofpact_get_REG_MOVE(a), flow, wc); |
9583bc14 EJ |
2928 | break; |
2929 | ||
2930 | case OFPACT_REG_LOAD: | |
f47ea021 | 2931 | nxm_execute_reg_load(ofpact_get_REG_LOAD(a), flow, wc); |
9583bc14 EJ |
2932 | break; |
2933 | ||
b2dd70be JR |
2934 | case OFPACT_SET_FIELD: |
2935 | set_field = ofpact_get_SET_FIELD(a); | |
2936 | mf = set_field->field; | |
b2dd70be JR |
2937 | |
2938 | /* Set field action only ever overwrites packet's outermost | |
2939 | * applicable header fields. Do nothing if no header exists. */ | |
4479846e JR |
2940 | if (mf->id == MFF_VLAN_VID) { |
2941 | wc->masks.vlan_tci |= htons(VLAN_CFI); | |
2942 | if (!(flow->vlan_tci & htons(VLAN_CFI))) { | |
2943 | break; | |
2944 | } | |
2945 | } else if ((mf->id == MFF_MPLS_LABEL || mf->id == MFF_MPLS_TC) | |
2946 | /* 'dl_type' is already unwildcarded. */ | |
2947 | && !eth_type_mpls(flow->dl_type)) { | |
2948 | break; | |
b2dd70be | 2949 | } |
4479846e JR |
2950 | |
2951 | mf_mask_field_and_prereqs(mf, &wc->masks); | |
2952 | mf_set_flow_value(mf, &set_field->value, flow); | |
b2dd70be JR |
2953 | break; |
2954 | ||
9583bc14 | 2955 | case OFPACT_STACK_PUSH: |
33bf9176 BP |
2956 | nxm_execute_stack_push(ofpact_get_STACK_PUSH(a), flow, wc, |
2957 | &ctx->stack); | |
9583bc14 EJ |
2958 | break; |
2959 | ||
2960 | case OFPACT_STACK_POP: | |
f74e7df7 JP |
2961 | nxm_execute_stack_pop(ofpact_get_STACK_POP(a), flow, wc, |
2962 | &ctx->stack); | |
9583bc14 EJ |
2963 | break; |
2964 | ||
2965 | case OFPACT_PUSH_MPLS: | |
8bfd0fda | 2966 | compose_mpls_push_action(ctx, ofpact_get_PUSH_MPLS(a)); |
9583bc14 EJ |
2967 | break; |
2968 | ||
2969 | case OFPACT_POP_MPLS: | |
8bfd0fda | 2970 | compose_mpls_pop_action(ctx, ofpact_get_POP_MPLS(a)->ethertype); |
9583bc14 EJ |
2971 | break; |
2972 | ||
097d4939 | 2973 | case OFPACT_SET_MPLS_LABEL: |
8bfd0fda BP |
2974 | compose_set_mpls_label_action( |
2975 | ctx, ofpact_get_SET_MPLS_LABEL(a)->label); | |
2976 | break; | |
097d4939 JR |
2977 | |
2978 | case OFPACT_SET_MPLS_TC: | |
8bfd0fda | 2979 | compose_set_mpls_tc_action(ctx, ofpact_get_SET_MPLS_TC(a)->tc); |
097d4939 JR |
2980 | break; |
2981 | ||
9583bc14 | 2982 | case OFPACT_SET_MPLS_TTL: |
8bfd0fda | 2983 | compose_set_mpls_ttl_action(ctx, ofpact_get_SET_MPLS_TTL(a)->ttl); |
9583bc14 EJ |
2984 | break; |
2985 | ||
2986 | case OFPACT_DEC_MPLS_TTL: | |
9cfef3d0 | 2987 | if (compose_dec_mpls_ttl_action(ctx)) { |
ad3efdcb | 2988 | return; |
9583bc14 EJ |
2989 | } |
2990 | break; | |
2991 | ||
2992 | case OFPACT_DEC_TTL: | |
f74e7df7 | 2993 | wc->masks.nw_ttl = 0xff; |
9583bc14 | 2994 | if (compose_dec_ttl(ctx, ofpact_get_DEC_TTL(a))) { |
ad3efdcb | 2995 | return; |
9583bc14 EJ |
2996 | } |
2997 | break; | |
2998 | ||
2999 | case OFPACT_NOTE: | |
3000 | /* Nothing to do. */ | |
3001 | break; | |
3002 | ||
3003 | case OFPACT_MULTIPATH: | |
33bf9176 | 3004 | multipath_execute(ofpact_get_MULTIPATH(a), flow, wc); |
9583bc14 EJ |
3005 | break; |
3006 | ||
3007 | case OFPACT_BUNDLE: | |
9583bc14 EJ |
3008 | xlate_bundle_action(ctx, ofpact_get_BUNDLE(a)); |
3009 | break; | |
3010 | ||
3011 | case OFPACT_OUTPUT_REG: | |
3012 | xlate_output_reg_action(ctx, ofpact_get_OUTPUT_REG(a)); | |
3013 | break; | |
3014 | ||
3015 | case OFPACT_LEARN: | |
3016 | xlate_learn_action(ctx, ofpact_get_LEARN(a)); | |
3017 | break; | |
3018 | ||
3019 | case OFPACT_EXIT: | |
3020 | ctx->exit = true; | |
3021 | break; | |
3022 | ||
3023 | case OFPACT_FIN_TIMEOUT: | |
33bf9176 | 3024 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); |
9583bc14 EJ |
3025 | ctx->xout->has_fin_timeout = true; |
3026 | xlate_fin_timeout(ctx, ofpact_get_FIN_TIMEOUT(a)); | |
3027 | break; | |
3028 | ||
3029 | case OFPACT_CLEAR_ACTIONS: | |
7fdb60a7 SH |
3030 | ofpbuf_clear(&ctx->action_set); |
3031 | break; | |
3032 | ||
3033 | case OFPACT_WRITE_ACTIONS: | |
3034 | xlate_write_actions(ctx, a); | |
9583bc14 EJ |
3035 | break; |
3036 | ||
3037 | case OFPACT_WRITE_METADATA: | |
3038 | metadata = ofpact_get_WRITE_METADATA(a); | |
33bf9176 BP |
3039 | flow->metadata &= ~metadata->mask; |
3040 | flow->metadata |= metadata->metadata & metadata->mask; | |
9583bc14 EJ |
3041 | break; |
3042 | ||
638a19b0 JR |
3043 | case OFPACT_METER: |
3044 | /* Not implemented yet. */ | |
3045 | break; | |
3046 | ||
9583bc14 | 3047 | case OFPACT_GOTO_TABLE: { |
9583bc14 | 3048 | struct ofpact_goto_table *ogt = ofpact_get_GOTO_TABLE(a); |
9583bc14 EJ |
3049 | |
3050 | ovs_assert(ctx->table_id < ogt->table_id); | |
4468099e | 3051 | xlate_table_action(ctx, ctx->xin->flow.in_port.ofp_port, |
6d328fa2 | 3052 | ogt->table_id, true, true); |
9583bc14 EJ |
3053 | break; |
3054 | } | |
3055 | ||
3056 | case OFPACT_SAMPLE: | |
3057 | xlate_sample_action(ctx, ofpact_get_SAMPLE(a)); | |
3058 | break; | |
3059 | } | |
3060 | } | |
9583bc14 EJ |
3061 | } |
3062 | ||
3063 | void | |
3064 | xlate_in_init(struct xlate_in *xin, struct ofproto_dpif *ofproto, | |
3065 | const struct flow *flow, struct rule_dpif *rule, | |
a66733a8 | 3066 | uint16_t tcp_flags, const struct ofpbuf *packet) |
9583bc14 EJ |
3067 | { |
3068 | xin->ofproto = ofproto; | |
3069 | xin->flow = *flow; | |
3070 | xin->packet = packet; | |
3071 | xin->may_learn = packet != NULL; | |
3072 | xin->rule = rule; | |
b256dc52 | 3073 | xin->xcache = NULL; |
9583bc14 EJ |
3074 | xin->ofpacts = NULL; |
3075 | xin->ofpacts_len = 0; | |
3076 | xin->tcp_flags = tcp_flags; | |
3077 | xin->resubmit_hook = NULL; | |
3078 | xin->report_hook = NULL; | |
3079 | xin->resubmit_stats = NULL; | |
3f207910 | 3080 | xin->skip_wildcards = false; |
9583bc14 EJ |
3081 | } |
3082 | ||
3083 | void | |
3084 | xlate_out_uninit(struct xlate_out *xout) | |
3085 | { | |
3086 | if (xout) { | |
3087 | ofpbuf_uninit(&xout->odp_actions); | |
3088 | } | |
3089 | } | |
3090 | ||
3091 | /* Translates the 'ofpacts_len' bytes of "struct ofpact"s starting at 'ofpacts' | |
3092 | * into datapath actions, using 'ctx', and discards the datapath actions. */ | |
3093 | void | |
3094 | xlate_actions_for_side_effects(struct xlate_in *xin) | |
3095 | { | |
3096 | struct xlate_out xout; | |
3097 | ||
3098 | xlate_actions(xin, &xout); | |
3099 | xlate_out_uninit(&xout); | |
3100 | } | |
3101 | ||
3102 | static void | |
3103 | xlate_report(struct xlate_ctx *ctx, const char *s) | |
3104 | { | |
3105 | if (ctx->xin->report_hook) { | |
4d0acc70 | 3106 | ctx->xin->report_hook(ctx->xin, s, ctx->recurse); |
9583bc14 EJ |
3107 | } |
3108 | } | |
3109 | ||
3110 | void | |
3111 | xlate_out_copy(struct xlate_out *dst, const struct xlate_out *src) | |
3112 | { | |
3113 | dst->wc = src->wc; | |
9583bc14 EJ |
3114 | dst->slow = src->slow; |
3115 | dst->has_learn = src->has_learn; | |
3116 | dst->has_normal = src->has_normal; | |
3117 | dst->has_fin_timeout = src->has_fin_timeout; | |
3118 | dst->nf_output_iface = src->nf_output_iface; | |
3119 | dst->mirrors = src->mirrors; | |
3120 | ||
3121 | ofpbuf_use_stub(&dst->odp_actions, dst->odp_actions_stub, | |
3122 | sizeof dst->odp_actions_stub); | |
1f317cb5 PS |
3123 | ofpbuf_put(&dst->odp_actions, ofpbuf_data(&src->odp_actions), |
3124 | ofpbuf_size(&src->odp_actions)); | |
9583bc14 EJ |
3125 | } |
3126 | \f | |
55954f6e EJ |
3127 | static struct skb_priority_to_dscp * |
3128 | get_skb_priority(const struct xport *xport, uint32_t skb_priority) | |
3129 | { | |
3130 | struct skb_priority_to_dscp *pdscp; | |
3131 | uint32_t hash; | |
3132 | ||
3133 | hash = hash_int(skb_priority, 0); | |
3134 | HMAP_FOR_EACH_IN_BUCKET (pdscp, hmap_node, hash, &xport->skb_priorities) { | |
3135 | if (pdscp->skb_priority == skb_priority) { | |
3136 | return pdscp; | |
3137 | } | |
3138 | } | |
3139 | return NULL; | |
3140 | } | |
3141 | ||
3142 | static bool | |
3143 | dscp_from_skb_priority(const struct xport *xport, uint32_t skb_priority, | |
3144 | uint8_t *dscp) | |
3145 | { | |
3146 | struct skb_priority_to_dscp *pdscp = get_skb_priority(xport, skb_priority); | |
3147 | *dscp = pdscp ? pdscp->dscp : 0; | |
3148 | return pdscp != NULL; | |
3149 | } | |
3150 | ||
3151 | static void | |
3152 | clear_skb_priorities(struct xport *xport) | |
3153 | { | |
3154 | struct skb_priority_to_dscp *pdscp, *next; | |
3155 | ||
3156 | HMAP_FOR_EACH_SAFE (pdscp, next, hmap_node, &xport->skb_priorities) { | |
3157 | hmap_remove(&xport->skb_priorities, &pdscp->hmap_node); | |
3158 | free(pdscp); | |
3159 | } | |
3160 | } | |
3161 | ||
ce4a6b76 BP |
3162 | static bool |
3163 | actions_output_to_local_port(const struct xlate_ctx *ctx) | |
3164 | { | |
46c88433 | 3165 | odp_port_t local_odp_port = ofp_port_to_odp_port(ctx->xbridge, OFPP_LOCAL); |
ce4a6b76 BP |
3166 | const struct nlattr *a; |
3167 | unsigned int left; | |
3168 | ||
1f317cb5 PS |
3169 | NL_ATTR_FOR_EACH_UNSAFE (a, left, ofpbuf_data(&ctx->xout->odp_actions), |
3170 | ofpbuf_size(&ctx->xout->odp_actions)) { | |
ce4a6b76 BP |
3171 | if (nl_attr_type(a) == OVS_ACTION_ATTR_OUTPUT |
3172 | && nl_attr_get_odp_port(a) == local_odp_port) { | |
3173 | return true; | |
3174 | } | |
3175 | } | |
3176 | return false; | |
3177 | } | |
9583bc14 | 3178 | |
91d6cd12 AW |
3179 | /* Thread safe call to xlate_actions__(). */ |
3180 | void | |
3181 | xlate_actions(struct xlate_in *xin, struct xlate_out *xout) | |
6a4d3ab5 | 3182 | OVS_EXCLUDED(xlate_rwlock) |
91d6cd12 AW |
3183 | { |
3184 | ovs_rwlock_rdlock(&xlate_rwlock); | |
3185 | xlate_actions__(xin, xout); | |
3186 | ovs_rwlock_unlock(&xlate_rwlock); | |
3187 | } | |
3188 | ||
9583bc14 | 3189 | /* Translates the 'ofpacts_len' bytes of "struct ofpacts" starting at 'ofpacts' |
56450a41 BP |
3190 | * into datapath actions in 'odp_actions', using 'ctx'. |
3191 | * | |
3192 | * The caller must take responsibility for eventually freeing 'xout', with | |
3193 | * xlate_out_uninit(). */ | |
91d6cd12 AW |
3194 | static void |
3195 | xlate_actions__(struct xlate_in *xin, struct xlate_out *xout) | |
3196 | OVS_REQ_RDLOCK(xlate_rwlock) | |
9583bc14 | 3197 | { |
33bf9176 BP |
3198 | struct flow_wildcards *wc = &xout->wc; |
3199 | struct flow *flow = &xin->flow; | |
10c44245 | 3200 | struct rule_dpif *rule = NULL; |
33bf9176 | 3201 | |
dc723c44 | 3202 | const struct rule_actions *actions = NULL; |
9583bc14 EJ |
3203 | enum slow_path_reason special; |
3204 | const struct ofpact *ofpacts; | |
46c88433 | 3205 | struct xport *in_port; |
9583bc14 EJ |
3206 | struct flow orig_flow; |
3207 | struct xlate_ctx ctx; | |
3208 | size_t ofpacts_len; | |
62a7cc71 | 3209 | bool tnl_may_send; |
c56fac1b | 3210 | bool is_icmp; |
9583bc14 | 3211 | |
46c88433 | 3212 | COVERAGE_INC(xlate_actions); |
9583bc14 EJ |
3213 | |
3214 | /* Flow initialization rules: | |
3215 | * - 'base_flow' must match the kernel's view of the packet at the | |
3216 | * time that action processing starts. 'flow' represents any | |
3217 | * transformations we wish to make through actions. | |
3218 | * - By default 'base_flow' and 'flow' are the same since the input | |
3219 | * packet matches the output before any actions are applied. | |
3220 | * - When using VLAN splinters, 'base_flow''s VLAN is set to the value | |
3221 | * of the received packet as seen by the kernel. If we later output | |
3222 | * to another device without any modifications this will cause us to | |
3223 | * insert a new tag since the original one was stripped off by the | |
3224 | * VLAN device. | |
3225 | * - Tunnel metadata as received is retained in 'flow'. This allows | |
3226 | * tunnel metadata matching also in later tables. | |
3227 | * Since a kernel action for setting the tunnel metadata will only be | |
3228 | * generated with actual tunnel output, changing the tunnel metadata | |
3229 | * values in 'flow' (such as tun_id) will only have effect with a later | |
3230 | * tunnel output action. | |
3231 | * - Tunnel 'base_flow' is completely cleared since that is what the | |
3232 | * kernel does. If we wish to maintain the original values an action | |
3233 | * needs to be generated. */ | |
3234 | ||
3235 | ctx.xin = xin; | |
3236 | ctx.xout = xout; | |
46c88433 EJ |
3237 | ctx.xout->slow = 0; |
3238 | ctx.xout->has_learn = false; | |
3239 | ctx.xout->has_normal = false; | |
3240 | ctx.xout->has_fin_timeout = false; | |
3241 | ctx.xout->nf_output_iface = NF_OUT_DROP; | |
3242 | ctx.xout->mirrors = 0; | |
3243 | ofpbuf_use_stub(&ctx.xout->odp_actions, ctx.xout->odp_actions_stub, | |
3244 | sizeof ctx.xout->odp_actions_stub); | |
3245 | ofpbuf_reserve(&ctx.xout->odp_actions, NL_A_U32_SIZE); | |
3246 | ||
3247 | ctx.xbridge = xbridge_lookup(xin->ofproto); | |
3248 | if (!ctx.xbridge) { | |
83709dfa | 3249 | return; |
46c88433 | 3250 | } |
9583bc14 | 3251 | |
9583bc14 EJ |
3252 | ctx.rule = xin->rule; |
3253 | ||
33bf9176 | 3254 | ctx.base_flow = *flow; |
9583bc14 | 3255 | memset(&ctx.base_flow.tunnel, 0, sizeof ctx.base_flow.tunnel); |
33bf9176 | 3256 | ctx.orig_tunnel_ip_dst = flow->tunnel.ip_dst; |
9583bc14 | 3257 | |
33bf9176 BP |
3258 | flow_wildcards_init_catchall(wc); |
3259 | memset(&wc->masks.in_port, 0xff, sizeof wc->masks.in_port); | |
1dd35f8a | 3260 | memset(&wc->masks.skb_priority, 0xff, sizeof wc->masks.skb_priority); |
7431e171 | 3261 | memset(&wc->masks.dl_type, 0xff, sizeof wc->masks.dl_type); |
0934ebba BP |
3262 | if (is_ip_any(flow)) { |
3263 | wc->masks.nw_frag |= FLOW_NW_FRAG_MASK; | |
3264 | } | |
c56fac1b | 3265 | is_icmp = is_icmpv4(flow) || is_icmpv6(flow); |
9583bc14 | 3266 | |
62a7cc71 | 3267 | tnl_may_send = tnl_xlate_init(&ctx.base_flow, flow, wc); |
ce3955be | 3268 | if (ctx.xbridge->netflow) { |
9b658910 | 3269 | netflow_mask_wc(flow, wc); |
9583bc14 EJ |
3270 | } |
3271 | ||
9583bc14 | 3272 | ctx.recurse = 0; |
98b07853 | 3273 | ctx.resubmits = 0; |
5a070238 | 3274 | ctx.in_group = false; |
33bf9176 | 3275 | ctx.orig_skb_priority = flow->skb_priority; |
9583bc14 EJ |
3276 | ctx.table_id = 0; |
3277 | ctx.exit = false; | |
92c08f09 | 3278 | ctx.use_recirc = false; |
9583bc14 | 3279 | |
10c44245 | 3280 | if (!xin->ofpacts && !ctx.rule) { |
6d328fa2 SH |
3281 | ctx.table_id = rule_dpif_lookup(ctx.xbridge->ofproto, flow, |
3282 | !xin->skip_wildcards ? wc : NULL, | |
83709dfa | 3283 | &rule, ctx.xin->xcache != NULL); |
10c44245 EJ |
3284 | if (ctx.xin->resubmit_stats) { |
3285 | rule_dpif_credit_stats(rule, ctx.xin->resubmit_stats); | |
3286 | } | |
b256dc52 JS |
3287 | if (ctx.xin->xcache) { |
3288 | struct xc_entry *entry; | |
3289 | ||
3290 | entry = xlate_cache_add_entry(ctx.xin->xcache, XC_RULE); | |
b256dc52 JS |
3291 | entry->u.rule = rule; |
3292 | } | |
10c44245 EJ |
3293 | ctx.rule = rule; |
3294 | } | |
ee1afdd5 | 3295 | xout->fail_open = ctx.rule && rule_dpif_is_fail_open(ctx.rule); |
10c44245 | 3296 | |
9583bc14 EJ |
3297 | if (xin->ofpacts) { |
3298 | ofpacts = xin->ofpacts; | |
3299 | ofpacts_len = xin->ofpacts_len; | |
10c44245 EJ |
3300 | } else if (ctx.rule) { |
3301 | actions = rule_dpif_get_actions(ctx.rule); | |
6f00e29b BP |
3302 | ofpacts = actions->ofpacts; |
3303 | ofpacts_len = actions->ofpacts_len; | |
9583bc14 | 3304 | } else { |
428b2edd | 3305 | OVS_NOT_REACHED(); |
9583bc14 EJ |
3306 | } |
3307 | ||
3308 | ofpbuf_use_stub(&ctx.stack, ctx.init_stack, sizeof ctx.init_stack); | |
7fdb60a7 SH |
3309 | ofpbuf_use_stub(&ctx.action_set, |
3310 | ctx.action_set_stub, sizeof ctx.action_set_stub); | |
9583bc14 | 3311 | |
ade6ad9c | 3312 | if (mbridge_has_mirrors(ctx.xbridge->mbridge)) { |
9583bc14 EJ |
3313 | /* Do this conditionally because the copy is expensive enough that it |
3314 | * shows up in profiles. */ | |
33bf9176 | 3315 | orig_flow = *flow; |
9583bc14 EJ |
3316 | } |
3317 | ||
33bf9176 | 3318 | if (flow->nw_frag & FLOW_NW_FRAG_ANY) { |
46c88433 | 3319 | switch (ctx.xbridge->frag) { |
9583bc14 EJ |
3320 | case OFPC_FRAG_NORMAL: |
3321 | /* We must pretend that transport ports are unavailable. */ | |
33bf9176 BP |
3322 | flow->tp_src = ctx.base_flow.tp_src = htons(0); |
3323 | flow->tp_dst = ctx.base_flow.tp_dst = htons(0); | |
9583bc14 EJ |
3324 | break; |
3325 | ||
3326 | case OFPC_FRAG_DROP: | |
83709dfa | 3327 | return; |
9583bc14 EJ |
3328 | |
3329 | case OFPC_FRAG_REASM: | |
428b2edd | 3330 | OVS_NOT_REACHED(); |
9583bc14 EJ |
3331 | |
3332 | case OFPC_FRAG_NX_MATCH: | |
3333 | /* Nothing to do. */ | |
3334 | break; | |
3335 | ||
3336 | case OFPC_INVALID_TTL_TO_CONTROLLER: | |
428b2edd | 3337 | OVS_NOT_REACHED(); |
9583bc14 EJ |
3338 | } |
3339 | } | |
3340 | ||
46c88433 | 3341 | in_port = get_ofp_port(ctx.xbridge, flow->in_port.ofp_port); |
b256dc52 JS |
3342 | if (in_port && in_port->is_tunnel) { |
3343 | if (ctx.xin->resubmit_stats) { | |
3344 | netdev_vport_inc_rx(in_port->netdev, ctx.xin->resubmit_stats); | |
3345 | if (in_port->bfd) { | |
3346 | bfd_account_rx(in_port->bfd, ctx.xin->resubmit_stats); | |
3347 | } | |
3348 | } | |
3349 | if (ctx.xin->xcache) { | |
3350 | struct xc_entry *entry; | |
3351 | ||
3352 | entry = xlate_cache_add_entry(ctx.xin->xcache, XC_NETDEV); | |
3353 | entry->u.dev.rx = netdev_ref(in_port->netdev); | |
3354 | entry->u.dev.bfd = bfd_ref(in_port->bfd); | |
d6fc5f57 EJ |
3355 | } |
3356 | } | |
3357 | ||
642dc74d | 3358 | special = process_special(&ctx, flow, in_port, ctx.xin->packet); |
9583bc14 | 3359 | if (special) { |
04594cd5 | 3360 | ctx.xout->slow |= special; |
9583bc14 | 3361 | } else { |
9583bc14 | 3362 | size_t sample_actions_len; |
9583bc14 | 3363 | |
4e022ec0 | 3364 | if (flow->in_port.ofp_port |
46c88433 EJ |
3365 | != vsp_realdev_to_vlandev(ctx.xbridge->ofproto, |
3366 | flow->in_port.ofp_port, | |
33bf9176 | 3367 | flow->vlan_tci)) { |
9583bc14 EJ |
3368 | ctx.base_flow.vlan_tci = 0; |
3369 | } | |
3370 | ||
3371 | add_sflow_action(&ctx); | |
3372 | add_ipfix_action(&ctx); | |
1f317cb5 | 3373 | sample_actions_len = ofpbuf_size(&ctx.xout->odp_actions); |
9583bc14 | 3374 | |
62a7cc71 | 3375 | if (tnl_may_send && (!in_port || may_receive(in_port, &ctx))) { |
9583bc14 EJ |
3376 | do_xlate_actions(ofpacts, ofpacts_len, &ctx); |
3377 | ||
3378 | /* We've let OFPP_NORMAL and the learning action look at the | |
3379 | * packet, so drop it now if forwarding is disabled. */ | |
9d189a50 | 3380 | if (in_port && !xport_stp_forward_state(in_port)) { |
1f317cb5 | 3381 | ofpbuf_set_size(&ctx.xout->odp_actions, sample_actions_len); |
9583bc14 EJ |
3382 | } |
3383 | } | |
3384 | ||
1f317cb5 | 3385 | if (ofpbuf_size(&ctx.action_set)) { |
7fdb60a7 SH |
3386 | xlate_action_set(&ctx); |
3387 | } | |
3388 | ||
46c88433 | 3389 | if (ctx.xbridge->has_in_band |
ce4a6b76 BP |
3390 | && in_band_must_output_to_local_port(flow) |
3391 | && !actions_output_to_local_port(&ctx)) { | |
9583bc14 EJ |
3392 | compose_output_action(&ctx, OFPP_LOCAL); |
3393 | } | |
aaa0fbae EJ |
3394 | |
3395 | fix_sflow_action(&ctx); | |
3396 | ||
46c88433 | 3397 | if (mbridge_has_mirrors(ctx.xbridge->mbridge)) { |
9583bc14 EJ |
3398 | add_mirror_actions(&ctx, &orig_flow); |
3399 | } | |
9583bc14 EJ |
3400 | } |
3401 | ||
1f317cb5 | 3402 | if (nl_attr_oversized(ofpbuf_size(&ctx.xout->odp_actions))) { |
542024c4 | 3403 | /* These datapath actions are too big for a Netlink attribute, so we |
0f032e95 BP |
3404 | * can't hand them to the kernel directly. dpif_execute() can execute |
3405 | * them one by one with help, so just mark the result as SLOW_ACTION to | |
3406 | * prevent the flow from being installed. */ | |
3407 | COVERAGE_INC(xlate_actions_oversize); | |
3408 | ctx.xout->slow |= SLOW_ACTION; | |
542024c4 BP |
3409 | } |
3410 | ||
b256dc52 JS |
3411 | if (mbridge_has_mirrors(ctx.xbridge->mbridge)) { |
3412 | if (ctx.xin->resubmit_stats) { | |
3413 | mirror_update_stats(ctx.xbridge->mbridge, xout->mirrors, | |
3414 | ctx.xin->resubmit_stats->n_packets, | |
3415 | ctx.xin->resubmit_stats->n_bytes); | |
3416 | } | |
3417 | if (ctx.xin->xcache) { | |
3418 | struct xc_entry *entry; | |
3419 | ||
3420 | entry = xlate_cache_add_entry(ctx.xin->xcache, XC_MIRROR); | |
3421 | entry->u.mirror.mbridge = mbridge_ref(ctx.xbridge->mbridge); | |
3422 | entry->u.mirror.mirrors = xout->mirrors; | |
3423 | } | |
3424 | } | |
3425 | ||
3426 | if (ctx.xbridge->netflow) { | |
b256dc52 JS |
3427 | /* Only update netflow if we don't have controller flow. We don't |
3428 | * report NetFlow expiration messages for such facets because they | |
3429 | * are just part of the control logic for the network, not real | |
3430 | * traffic. */ | |
3431 | if (ofpacts_len == 0 | |
3432 | || ofpacts->type != OFPACT_CONTROLLER | |
3433 | || ofpact_next(ofpacts) < ofpact_end(ofpacts, ofpacts_len)) { | |
3434 | if (ctx.xin->resubmit_stats) { | |
d6fc5f57 EJ |
3435 | netflow_flow_update(ctx.xbridge->netflow, flow, |
3436 | xout->nf_output_iface, | |
3437 | ctx.xin->resubmit_stats); | |
3438 | } | |
b256dc52 JS |
3439 | if (ctx.xin->xcache) { |
3440 | struct xc_entry *entry; | |
3441 | ||
3442 | entry = xlate_cache_add_entry(ctx.xin->xcache, XC_NETFLOW); | |
3443 | entry->u.nf.netflow = netflow_ref(ctx.xbridge->netflow); | |
3444 | entry->u.nf.flow = xmemdup(flow, sizeof *flow); | |
3445 | entry->u.nf.iface = xout->nf_output_iface; | |
3446 | } | |
d6fc5f57 EJ |
3447 | } |
3448 | } | |
3449 | ||
9583bc14 | 3450 | ofpbuf_uninit(&ctx.stack); |
7fdb60a7 | 3451 | ofpbuf_uninit(&ctx.action_set); |
9583bc14 EJ |
3452 | |
3453 | /* Clear the metadata and register wildcard masks, because we won't | |
3454 | * use non-header fields as part of the cache. */ | |
c11c6faa | 3455 | flow_wildcards_clear_non_packet_fields(wc); |
dc24a00f | 3456 | |
c56fac1b BP |
3457 | /* ICMPv4 and ICMPv6 have 8-bit "type" and "code" fields. struct flow uses |
3458 | * the low 8 bits of the 16-bit tp_src and tp_dst members to represent | |
3459 | * these fields. The datapath interface, on the other hand, represents | |
3460 | * them with just 8 bits each. This means that if the high 8 bits of the | |
3461 | * masks for these fields somehow become set, then they will get chopped | |
3462 | * off by a round trip through the datapath, and revalidation will spot | |
3463 | * that as an inconsistency and delete the flow. Avoid the problem here by | |
3464 | * making sure that only the low 8 bits of either field can be unwildcarded | |
3465 | * for ICMP. | |
3466 | */ | |
3467 | if (is_icmp) { | |
3468 | wc->masks.tp_src &= htons(UINT8_MAX); | |
3469 | wc->masks.tp_dst &= htons(UINT8_MAX); | |
3470 | } | |
91d6cd12 AW |
3471 | } |
3472 | ||
3473 | /* Sends 'packet' out 'ofport'. | |
3474 | * May modify 'packet'. | |
3475 | * Returns 0 if successful, otherwise a positive errno value. */ | |
3476 | int | |
3477 | xlate_send_packet(const struct ofport_dpif *ofport, struct ofpbuf *packet) | |
3478 | { | |
91d6cd12 | 3479 | struct xport *xport; |
91d6cd12 | 3480 | struct ofpact_output output; |
91d6cd12 | 3481 | struct flow flow; |
91d6cd12 | 3482 | |
91d6cd12 AW |
3483 | ofpact_init(&output.ofpact, OFPACT_OUTPUT, sizeof output); |
3484 | /* Use OFPP_NONE as the in_port to avoid special packet processing. */ | |
b5e7e61a AZ |
3485 | flow_extract(packet, NULL, &flow); |
3486 | flow.in_port.ofp_port = OFPP_NONE; | |
91d6cd12 AW |
3487 | |
3488 | ovs_rwlock_rdlock(&xlate_rwlock); | |
3489 | xport = xport_lookup(ofport); | |
3490 | if (!xport) { | |
91d6cd12 | 3491 | ovs_rwlock_unlock(&xlate_rwlock); |
02ea2703 | 3492 | return EINVAL; |
91d6cd12 | 3493 | } |
91d6cd12 AW |
3494 | output.port = xport->ofp_port; |
3495 | output.max_len = 0; | |
dc24a00f | 3496 | ovs_rwlock_unlock(&xlate_rwlock); |
e491a67a YT |
3497 | |
3498 | return ofproto_dpif_execute_actions(xport->xbridge->ofproto, &flow, NULL, | |
3499 | &output.ofpact, sizeof output, | |
3500 | packet); | |
9583bc14 | 3501 | } |
b256dc52 JS |
3502 | |
3503 | struct xlate_cache * | |
3504 | xlate_cache_new(void) | |
3505 | { | |
3506 | struct xlate_cache *xcache = xmalloc(sizeof *xcache); | |
3507 | ||
3508 | ofpbuf_init(&xcache->entries, 512); | |
3509 | return xcache; | |
3510 | } | |
3511 | ||
3512 | static struct xc_entry * | |
3513 | xlate_cache_add_entry(struct xlate_cache *xcache, enum xc_type type) | |
3514 | { | |
3515 | struct xc_entry *entry; | |
3516 | ||
3517 | entry = ofpbuf_put_zeros(&xcache->entries, sizeof *entry); | |
3518 | entry->type = type; | |
3519 | ||
3520 | return entry; | |
3521 | } | |
3522 | ||
3523 | static void | |
3524 | xlate_cache_netdev(struct xc_entry *entry, const struct dpif_flow_stats *stats) | |
3525 | { | |
3526 | if (entry->u.dev.tx) { | |
3527 | netdev_vport_inc_tx(entry->u.dev.tx, stats); | |
3528 | } | |
3529 | if (entry->u.dev.rx) { | |
3530 | netdev_vport_inc_rx(entry->u.dev.rx, stats); | |
3531 | } | |
3532 | if (entry->u.dev.bfd) { | |
3533 | bfd_account_rx(entry->u.dev.bfd, stats); | |
3534 | } | |
3535 | } | |
3536 | ||
3537 | static void | |
3538 | xlate_cache_normal(struct ofproto_dpif *ofproto, struct flow *flow, int vlan) | |
3539 | { | |
3540 | struct xbridge *xbridge; | |
3541 | struct xbundle *xbundle; | |
3542 | struct flow_wildcards wc; | |
3543 | ||
3544 | xbridge = xbridge_lookup(ofproto); | |
3545 | if (!xbridge) { | |
3546 | return; | |
3547 | } | |
3548 | ||
3549 | xbundle = lookup_input_bundle(xbridge, flow->in_port.ofp_port, false, | |
3550 | NULL); | |
3551 | if (!xbundle) { | |
3552 | return; | |
3553 | } | |
3554 | ||
3555 | update_learning_table(xbridge, flow, &wc, vlan, xbundle); | |
3556 | } | |
3557 | ||
3558 | /* Push stats and perform side effects of flow translation. */ | |
3559 | void | |
3560 | xlate_push_stats(struct xlate_cache *xcache, bool may_learn, | |
3561 | const struct dpif_flow_stats *stats) | |
3562 | { | |
3563 | struct xc_entry *entry; | |
3564 | struct ofpbuf entries = xcache->entries; | |
3565 | ||
3566 | XC_ENTRY_FOR_EACH (entry, entries, xcache) { | |
3567 | switch (entry->type) { | |
3568 | case XC_RULE: | |
3569 | rule_dpif_credit_stats(entry->u.rule, stats); | |
3570 | break; | |
3571 | case XC_BOND: | |
3572 | bond_account(entry->u.bond.bond, entry->u.bond.flow, | |
3573 | entry->u.bond.vid, stats->n_bytes); | |
3574 | break; | |
3575 | case XC_NETDEV: | |
3576 | xlate_cache_netdev(entry, stats); | |
3577 | break; | |
3578 | case XC_NETFLOW: | |
3579 | netflow_flow_update(entry->u.nf.netflow, entry->u.nf.flow, | |
3580 | entry->u.nf.iface, stats); | |
3581 | break; | |
3582 | case XC_MIRROR: | |
3583 | mirror_update_stats(entry->u.mirror.mbridge, | |
3584 | entry->u.mirror.mirrors, | |
3585 | stats->n_packets, stats->n_bytes); | |
3586 | break; | |
3587 | case XC_LEARN: | |
3588 | if (may_learn) { | |
3589 | struct rule_dpif *rule = entry->u.learn.rule; | |
3590 | ||
3591 | /* Reset the modified time for a rule that is equivalent to | |
83709dfa JR |
3592 | * the currently cached rule. If the rule is not the exact |
3593 | * rule we have cached, update the reference that we have. */ | |
3594 | entry->u.learn.rule = ofproto_dpif_refresh_rule(rule); | |
b256dc52 JS |
3595 | } |
3596 | break; | |
3597 | case XC_NORMAL: | |
3598 | xlate_cache_normal(entry->u.normal.ofproto, entry->u.normal.flow, | |
3599 | entry->u.normal.vlan); | |
3600 | break; | |
3601 | case XC_FIN_TIMEOUT: | |
3602 | xlate_fin_timeout__(entry->u.fin.rule, stats->tcp_flags, | |
3603 | entry->u.fin.idle, entry->u.fin.hard); | |
3604 | break; | |
3605 | default: | |
3606 | OVS_NOT_REACHED(); | |
3607 | } | |
3608 | } | |
3609 | } | |
3610 | ||
3611 | static void | |
3612 | xlate_dev_unref(struct xc_entry *entry) | |
3613 | { | |
3614 | if (entry->u.dev.tx) { | |
3615 | netdev_close(entry->u.dev.tx); | |
3616 | } | |
3617 | if (entry->u.dev.rx) { | |
3618 | netdev_close(entry->u.dev.rx); | |
3619 | } | |
3620 | if (entry->u.dev.bfd) { | |
3621 | bfd_unref(entry->u.dev.bfd); | |
3622 | } | |
3623 | } | |
3624 | ||
3625 | static void | |
3626 | xlate_cache_clear_netflow(struct netflow *netflow, struct flow *flow) | |
3627 | { | |
3628 | netflow_expire(netflow, flow); | |
3629 | netflow_flow_clear(netflow, flow); | |
3630 | netflow_unref(netflow); | |
3631 | free(flow); | |
3632 | } | |
3633 | ||
3634 | void | |
3635 | xlate_cache_clear(struct xlate_cache *xcache) | |
3636 | { | |
3637 | struct xc_entry *entry; | |
3638 | struct ofpbuf entries; | |
3639 | ||
3640 | if (!xcache) { | |
3641 | return; | |
3642 | } | |
3643 | ||
3644 | XC_ENTRY_FOR_EACH (entry, entries, xcache) { | |
3645 | switch (entry->type) { | |
3646 | case XC_RULE: | |
3647 | rule_dpif_unref(entry->u.rule); | |
3648 | break; | |
3649 | case XC_BOND: | |
3650 | free(entry->u.bond.flow); | |
3651 | bond_unref(entry->u.bond.bond); | |
3652 | break; | |
3653 | case XC_NETDEV: | |
3654 | xlate_dev_unref(entry); | |
3655 | break; | |
3656 | case XC_NETFLOW: | |
3657 | xlate_cache_clear_netflow(entry->u.nf.netflow, entry->u.nf.flow); | |
3658 | break; | |
3659 | case XC_MIRROR: | |
3660 | mbridge_unref(entry->u.mirror.mbridge); | |
3661 | break; | |
3662 | case XC_LEARN: | |
83709dfa | 3663 | /* 'u.learn.rule' is the learned rule. */ |
b256dc52 JS |
3664 | rule_dpif_unref(entry->u.learn.rule); |
3665 | break; | |
3666 | case XC_NORMAL: | |
3667 | free(entry->u.normal.flow); | |
3668 | break; | |
3669 | case XC_FIN_TIMEOUT: | |
83709dfa JR |
3670 | /* 'u.fin.rule' is always already held as a XC_RULE, which |
3671 | * has already released it's reference above. */ | |
b256dc52 JS |
3672 | break; |
3673 | default: | |
3674 | OVS_NOT_REACHED(); | |
3675 | } | |
3676 | } | |
3677 | ||
3678 | ofpbuf_clear(&xcache->entries); | |
3679 | } | |
3680 | ||
3681 | void | |
3682 | xlate_cache_delete(struct xlate_cache *xcache) | |
3683 | { | |
3684 | xlate_cache_clear(xcache); | |
3685 | ofpbuf_uninit(&xcache->entries); | |
3686 | free(xcache); | |
3687 | } |