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18080541 | 1 | /* Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014, 2015 Nicira, Inc. |
9583bc14 EJ |
2 | * |
3 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
4 | * you may not use this file except in compliance with the License. | |
5 | * You may obtain a copy of the License at: | |
6 | * | |
7 | * http://www.apache.org/licenses/LICENSE-2.0 | |
8 | * | |
9 | * Unless required by applicable law or agreed to in writing, software | |
10 | * distributed under the License is distributed on an "AS IS" BASIS, | |
11 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
12 | * See the License for the specific language governing permissions and | |
13 | * limitations under the License. */ | |
14 | ||
15 | #include <config.h> | |
16 | ||
17 | #include "ofproto/ofproto-dpif-xlate.h" | |
18 | ||
8449c4d6 | 19 | #include <errno.h> |
a36de779 PS |
20 | #include <arpa/inet.h> |
21 | #include <net/if.h> | |
22 | #include <sys/socket.h> | |
23 | #include <netinet/in.h> | |
8449c4d6 | 24 | |
a36de779 | 25 | #include "tnl-arp-cache.h" |
db7d4e46 | 26 | #include "bfd.h" |
9583bc14 EJ |
27 | #include "bitmap.h" |
28 | #include "bond.h" | |
29 | #include "bundle.h" | |
30 | #include "byte-order.h" | |
db7d4e46 | 31 | #include "cfm.h" |
9583bc14 EJ |
32 | #include "connmgr.h" |
33 | #include "coverage.h" | |
e14deea0 | 34 | #include "dp-packet.h" |
9583bc14 EJ |
35 | #include "dpif.h" |
36 | #include "dynamic-string.h" | |
f7f1ea29 | 37 | #include "in-band.h" |
db7d4e46 | 38 | #include "lacp.h" |
9583bc14 | 39 | #include "learn.h" |
46c88433 | 40 | #include "list.h" |
0477baa9 | 41 | #include "ovs-lldp.h" |
9583bc14 | 42 | #include "mac-learning.h" |
6d95c4e8 | 43 | #include "mcast-snooping.h" |
9583bc14 EJ |
44 | #include "meta-flow.h" |
45 | #include "multipath.h" | |
46 | #include "netdev-vport.h" | |
47 | #include "netlink.h" | |
48 | #include "nx-match.h" | |
49 | #include "odp-execute.h" | |
50 | #include "ofp-actions.h" | |
51 | #include "ofproto/ofproto-dpif-ipfix.h" | |
ec7ceaed | 52 | #include "ofproto/ofproto-dpif-mirror.h" |
60d02c72 | 53 | #include "ofproto/ofproto-dpif-monitor.h" |
9583bc14 EJ |
54 | #include "ofproto/ofproto-dpif-sflow.h" |
55 | #include "ofproto/ofproto-dpif.h" | |
6f00e29b | 56 | #include "ofproto/ofproto-provider.h" |
a36de779 PS |
57 | #include "ovs-router.h" |
58 | #include "tnl-ports.h" | |
9583bc14 | 59 | #include "tunnel.h" |
e6211adc | 60 | #include "openvswitch/vlog.h" |
9583bc14 | 61 | |
46c88433 | 62 | COVERAGE_DEFINE(xlate_actions); |
0f032e95 | 63 | COVERAGE_DEFINE(xlate_actions_oversize); |
7d031d7e | 64 | COVERAGE_DEFINE(xlate_actions_too_many_output); |
9583bc14 EJ |
65 | |
66 | VLOG_DEFINE_THIS_MODULE(ofproto_dpif_xlate); | |
67 | ||
8a553e9a EJ |
68 | /* Maximum depth of flow table recursion (due to resubmit actions) in a |
69 | * flow translation. */ | |
70 | #define MAX_RESUBMIT_RECURSION 64 | |
adcf00ba AZ |
71 | #define MAX_INTERNAL_RESUBMITS 1 /* Max resbmits allowed using rules in |
72 | internal table. */ | |
8a553e9a | 73 | |
98b07853 BP |
74 | /* Maximum number of resubmit actions in a flow translation, whether they are |
75 | * recursive or not. */ | |
76 | #define MAX_RESUBMITS (MAX_RESUBMIT_RECURSION * MAX_RESUBMIT_RECURSION) | |
77 | ||
46c88433 EJ |
78 | struct xbridge { |
79 | struct hmap_node hmap_node; /* Node in global 'xbridges' map. */ | |
80 | struct ofproto_dpif *ofproto; /* Key in global 'xbridges' map. */ | |
81 | ||
ca6ba700 | 82 | struct ovs_list xbundles; /* Owned xbundles. */ |
46c88433 EJ |
83 | struct hmap xports; /* Indexed by ofp_port. */ |
84 | ||
85 | char *name; /* Name used in log messages. */ | |
89a8a7f0 | 86 | struct dpif *dpif; /* Datapath interface. */ |
46c88433 | 87 | struct mac_learning *ml; /* Mac learning handle. */ |
6d95c4e8 | 88 | struct mcast_snooping *ms; /* Multicast Snooping handle. */ |
46c88433 EJ |
89 | struct mbridge *mbridge; /* Mirroring. */ |
90 | struct dpif_sflow *sflow; /* SFlow handle, or null. */ | |
91 | struct dpif_ipfix *ipfix; /* Ipfix handle, or null. */ | |
ce3955be | 92 | struct netflow *netflow; /* Netflow handle, or null. */ |
9d189a50 | 93 | struct stp *stp; /* STP or null if disabled. */ |
9efd308e | 94 | struct rstp *rstp; /* RSTP or null if disabled. */ |
46c88433 | 95 | |
46c88433 EJ |
96 | bool has_in_band; /* Bridge has in band control? */ |
97 | bool forward_bpdu; /* Bridge forwards STP BPDUs? */ | |
4b97b70d | 98 | |
b440dd8c JS |
99 | /* Datapath feature support. */ |
100 | struct dpif_backer_support support; | |
46c88433 EJ |
101 | }; |
102 | ||
103 | struct xbundle { | |
104 | struct hmap_node hmap_node; /* In global 'xbundles' map. */ | |
105 | struct ofbundle *ofbundle; /* Key in global 'xbundles' map. */ | |
106 | ||
ca6ba700 | 107 | struct ovs_list list_node; /* In parent 'xbridges' list. */ |
46c88433 EJ |
108 | struct xbridge *xbridge; /* Parent xbridge. */ |
109 | ||
ca6ba700 | 110 | struct ovs_list xports; /* Contains "struct xport"s. */ |
46c88433 EJ |
111 | |
112 | char *name; /* Name used in log messages. */ | |
113 | struct bond *bond; /* Nonnull iff more than one port. */ | |
114 | struct lacp *lacp; /* LACP handle or null. */ | |
115 | ||
116 | enum port_vlan_mode vlan_mode; /* VLAN mode. */ | |
117 | int vlan; /* -1=trunk port, else a 12-bit VLAN ID. */ | |
118 | unsigned long *trunks; /* Bitmap of trunked VLANs, if 'vlan' == -1. | |
119 | * NULL if all VLANs are trunked. */ | |
120 | bool use_priority_tags; /* Use 802.1p tag for frames in VLAN 0? */ | |
121 | bool floodable; /* No port has OFPUTIL_PC_NO_FLOOD set? */ | |
122 | }; | |
123 | ||
124 | struct xport { | |
125 | struct hmap_node hmap_node; /* Node in global 'xports' map. */ | |
126 | struct ofport_dpif *ofport; /* Key in global 'xports map. */ | |
127 | ||
128 | struct hmap_node ofp_node; /* Node in parent xbridge 'xports' map. */ | |
129 | ofp_port_t ofp_port; /* Key in parent xbridge 'xports' map. */ | |
130 | ||
131 | odp_port_t odp_port; /* Datapath port number or ODPP_NONE. */ | |
132 | ||
ca6ba700 | 133 | struct ovs_list bundle_node; /* In parent xbundle (if it exists). */ |
46c88433 EJ |
134 | struct xbundle *xbundle; /* Parent xbundle or null. */ |
135 | ||
136 | struct netdev *netdev; /* 'ofport''s netdev. */ | |
137 | ||
138 | struct xbridge *xbridge; /* Parent bridge. */ | |
139 | struct xport *peer; /* Patch port peer or null. */ | |
140 | ||
141 | enum ofputil_port_config config; /* OpenFlow port configuration. */ | |
dd8cd4b4 | 142 | enum ofputil_port_state state; /* OpenFlow port state. */ |
92cf817b | 143 | int stp_port_no; /* STP port number or -1 if not in use. */ |
f025bcb7 | 144 | struct rstp_port *rstp_port; /* RSTP port or null. */ |
46c88433 | 145 | |
55954f6e EJ |
146 | struct hmap skb_priorities; /* Map of 'skb_priority_to_dscp's. */ |
147 | ||
46c88433 EJ |
148 | bool may_enable; /* May be enabled in bonds. */ |
149 | bool is_tunnel; /* Is a tunnel port. */ | |
150 | ||
151 | struct cfm *cfm; /* CFM handle or null. */ | |
152 | struct bfd *bfd; /* BFD handle or null. */ | |
0477baa9 | 153 | struct lldp *lldp; /* LLDP handle or null. */ |
46c88433 EJ |
154 | }; |
155 | ||
4d0acc70 EJ |
156 | struct xlate_ctx { |
157 | struct xlate_in *xin; | |
158 | struct xlate_out *xout; | |
159 | ||
46c88433 | 160 | const struct xbridge *xbridge; |
4d0acc70 | 161 | |
621b8064 | 162 | /* Flow tables version at the beginning of the translation. */ |
18721c4a | 163 | cls_version_t tables_version; |
621b8064 | 164 | |
4d0acc70 EJ |
165 | /* Flow at the last commit. */ |
166 | struct flow base_flow; | |
167 | ||
168 | /* Tunnel IP destination address as received. This is stored separately | |
169 | * as the base_flow.tunnel is cleared on init to reflect the datapath | |
170 | * behavior. Used to make sure not to send tunneled output to ourselves, | |
171 | * which might lead to an infinite loop. This could happen easily | |
172 | * if a tunnel is marked as 'ip_remote=flow', and the flow does not | |
173 | * actually set the tun_dst field. */ | |
174 | ovs_be32 orig_tunnel_ip_dst; | |
175 | ||
176 | /* Stack for the push and pop actions. Each stack element is of type | |
177 | * "union mf_subvalue". */ | |
4d0acc70 EJ |
178 | struct ofpbuf stack; |
179 | ||
180 | /* The rule that we are currently translating, or NULL. */ | |
181 | struct rule_dpif *rule; | |
182 | ||
49a73e0c BP |
183 | /* Flow translation populates this with wildcards relevant in translation. |
184 | * When 'xin->wc' is nonnull, this is the same pointer. When 'xin->wc' is | |
185 | * null, this is a pointer to uninitialized scratch memory. This allows | |
186 | * code to blindly write to 'ctx->wc' without worrying about whether the | |
187 | * caller really wants wildcards. */ | |
188 | struct flow_wildcards *wc; | |
189 | ||
1520ef4f BP |
190 | /* Output buffer for datapath actions. When 'xin->odp_actions' is nonnull, |
191 | * this is the same pointer. When 'xin->odp_actions' is null, this points | |
192 | * to a scratch ofpbuf. This allows code to add actions to | |
193 | * 'ctx->odp_actions' without worrying about whether the caller really | |
194 | * wants actions. */ | |
195 | struct ofpbuf *odp_actions; | |
196 | ||
98b07853 BP |
197 | /* Resubmit statistics, via xlate_table_action(). */ |
198 | int recurse; /* Current resubmit nesting depth. */ | |
199 | int resubmits; /* Total number of resubmits. */ | |
5a070238 | 200 | bool in_group; /* Currently translating ofgroup, if true. */ |
029ca940 | 201 | bool in_action_set; /* Currently translating action_set, if true. */ |
98b07853 | 202 | |
4d0acc70 | 203 | uint8_t table_id; /* OpenFlow table ID where flow was found. */ |
8b1e5560 JR |
204 | ovs_be64 rule_cookie; /* Cookie of the rule being translated. */ |
205 | uint32_t orig_skb_priority; /* Priority when packet arrived. */ | |
4d0acc70 | 206 | uint32_t sflow_n_outputs; /* Number of output ports. */ |
4e022ec0 | 207 | odp_port_t sflow_odp_port; /* Output port for composing sFlow action. */ |
2031ef97 | 208 | ofp_port_t nf_output_iface; /* Output interface index for NetFlow. */ |
4d0acc70 | 209 | bool exit; /* No further actions should be processed. */ |
3d6151f3 | 210 | mirror_mask_t mirrors; /* Bitmap of associated mirrors. */ |
7fdb60a7 | 211 | |
e672ff9b JR |
212 | /* These are used for non-bond recirculation. The recirculation IDs are |
213 | * stored in xout and must be associated with a datapath flow (ukey), | |
214 | * otherwise they will be freed when the xout is uninitialized. | |
215 | * | |
216 | * | |
217 | * Steps in Recirculation Translation | |
218 | * ================================== | |
219 | * | |
220 | * At some point during translation, the code recognizes the need for | |
221 | * recirculation. For example, recirculation is necessary when, after | |
222 | * popping the last MPLS label, an action or a match tries to examine or | |
223 | * modify a field that has been newly revealed following the MPLS label. | |
224 | * | |
225 | * The simplest part of the work to be done is to commit existing changes to | |
226 | * the packet, which produces datapath actions corresponding to the changes, | |
227 | * and after this, add an OVS_ACTION_ATTR_RECIRC datapath action. | |
228 | * | |
229 | * The main problem here is preserving state. When the datapath executes | |
230 | * OVS_ACTION_ATTR_RECIRC, it will upcall to userspace to get a translation | |
231 | * for the post-recirculation actions. At this point userspace has to | |
232 | * resume the translation where it left off, which means that it has to | |
233 | * execute the following: | |
234 | * | |
235 | * - The action that prompted recirculation, and any actions following | |
236 | * it within the same flow. | |
237 | * | |
238 | * - If the action that prompted recirculation was invoked within a | |
239 | * NXAST_RESUBMIT, then any actions following the resubmit. These | |
240 | * "resubmit"s can be nested, so this has to go all the way up the | |
241 | * control stack. | |
242 | * | |
243 | * - The OpenFlow 1.1+ action set. | |
244 | * | |
245 | * State that actions and flow table lookups can depend on, such as the | |
246 | * following, must also be preserved: | |
247 | * | |
248 | * - Metadata fields (input port, registers, OF1.1+ metadata, ...). | |
249 | * | |
250 | * - Action set, stack | |
251 | * | |
252 | * - The table ID and cookie of the flow being translated at each level | |
253 | * of the control stack (since OFPAT_CONTROLLER actions send these to | |
254 | * the controller). | |
255 | * | |
256 | * Translation allows for the control of this state preservation via these | |
257 | * members. When a need for recirculation is identified, the translation | |
258 | * process: | |
259 | * | |
260 | * 1. Sets 'recirc_action_offset' to the current size of 'action_set'. The | |
261 | * action set is part of what needs to be preserved, so this allows the | |
262 | * action set and the additional state to share the 'action_set' buffer. | |
263 | * Later steps can tell that setup for recirculation is in progress from | |
264 | * the nonnegative value of 'recirc_action_offset'. | |
265 | * | |
266 | * 2. Sets 'exit' to true to tell later steps that we're exiting from the | |
267 | * translation process. | |
268 | * | |
269 | * 3. Adds an OFPACT_UNROLL_XLATE action to 'action_set'. This action | |
270 | * holds the current table ID and cookie so that they can be restored | |
271 | * during a post-recirculation upcall translation. | |
272 | * | |
273 | * 4. Adds the action that prompted recirculation and any actions following | |
274 | * it within the same flow to 'action_set', so that they can be executed | |
275 | * during a post-recirculation upcall translation. | |
276 | * | |
277 | * 5. Returns. | |
278 | * | |
279 | * 6. The action that prompted recirculation might be nested in a stack of | |
280 | * nested "resubmit"s that have actions remaining. Each of these notices | |
281 | * that we're exiting (from 'exit') and that recirculation setup is in | |
282 | * progress (from 'recirc_action_offset') and responds by adding more | |
283 | * OFPACT_UNROLL_XLATE actions to 'action_set', as necessary, and any | |
284 | * actions that were yet unprocessed. | |
285 | * | |
286 | * The caller stores all the state produced by this process associated with | |
287 | * the recirculation ID. For post-recirculation upcall translation, the | |
288 | * caller passes it back in for the new translation to execute. The | |
289 | * process yielded a set of ofpacts that can be translated directly, so it | |
290 | * is not much of a special case at that point. | |
291 | */ | |
292 | int recirc_action_offset; /* Offset in 'action_set' to actions to be | |
293 | * executed after recirculation, or -1. */ | |
294 | int last_unroll_offset; /* Offset in 'action_set' to the latest unroll | |
295 | * action, or -1. */ | |
296 | ||
7bbdd84f SH |
297 | /* True if a packet was but is no longer MPLS (due to an MPLS pop action). |
298 | * This is a trigger for recirculation in cases where translating an action | |
299 | * or looking up a flow requires access to the fields of the packet after | |
1d741d6d | 300 | * the MPLS label stack that was originally present. */ |
7bbdd84f SH |
301 | bool was_mpls; |
302 | ||
7fdb60a7 SH |
303 | /* OpenFlow 1.1+ action set. |
304 | * | |
305 | * 'action_set' accumulates "struct ofpact"s added by OFPACT_WRITE_ACTIONS. | |
306 | * When translation is otherwise complete, ofpacts_execute_action_set() | |
307 | * converts it to a set of "struct ofpact"s that can be translated into | |
ed9c9e3e | 308 | * datapath actions. */ |
c61f3870 | 309 | bool action_set_has_group; /* Action set contains OFPACT_GROUP? */ |
7fdb60a7 | 310 | struct ofpbuf action_set; /* Action set. */ |
4d0acc70 EJ |
311 | }; |
312 | ||
ed9c9e3e | 313 | static void xlate_action_set(struct xlate_ctx *ctx); |
704bb0bf | 314 | static void xlate_commit_actions(struct xlate_ctx *ctx); |
ed9c9e3e | 315 | |
1d741d6d JR |
316 | static void |
317 | ctx_trigger_recirculation(struct xlate_ctx *ctx) | |
318 | { | |
319 | ctx->exit = true; | |
320 | ctx->recirc_action_offset = ctx->action_set.size; | |
321 | } | |
322 | ||
323 | static bool | |
324 | ctx_first_recirculation_action(const struct xlate_ctx *ctx) | |
325 | { | |
326 | return ctx->recirc_action_offset == ctx->action_set.size; | |
327 | } | |
328 | ||
e672ff9b JR |
329 | static inline bool |
330 | exit_recirculates(const struct xlate_ctx *ctx) | |
331 | { | |
332 | /* When recirculating the 'recirc_action_offset' has a non-negative value. | |
333 | */ | |
334 | return ctx->recirc_action_offset >= 0; | |
335 | } | |
336 | ||
337 | static void compose_recirculate_action(struct xlate_ctx *ctx); | |
338 | ||
9583bc14 EJ |
339 | /* A controller may use OFPP_NONE as the ingress port to indicate that |
340 | * it did not arrive on a "real" port. 'ofpp_none_bundle' exists for | |
341 | * when an input bundle is needed for validation (e.g., mirroring or | |
342 | * OFPP_NORMAL processing). It is not connected to an 'ofproto' or have | |
3548d242 BP |
343 | * any 'port' structs, so care must be taken when dealing with it. */ |
344 | static struct xbundle ofpp_none_bundle = { | |
345 | .name = "OFPP_NONE", | |
346 | .vlan_mode = PORT_VLAN_TRUNK | |
347 | }; | |
9583bc14 | 348 | |
55954f6e EJ |
349 | /* Node in 'xport''s 'skb_priorities' map. Used to maintain a map from |
350 | * 'priority' (the datapath's term for QoS queue) to the dscp bits which all | |
351 | * traffic egressing the 'ofport' with that priority should be marked with. */ | |
352 | struct skb_priority_to_dscp { | |
353 | struct hmap_node hmap_node; /* Node in 'ofport_dpif''s 'skb_priorities'. */ | |
354 | uint32_t skb_priority; /* Priority of this queue (see struct flow). */ | |
355 | ||
356 | uint8_t dscp; /* DSCP bits to mark outgoing traffic with. */ | |
357 | }; | |
358 | ||
b256dc52 JS |
359 | enum xc_type { |
360 | XC_RULE, | |
361 | XC_BOND, | |
362 | XC_NETDEV, | |
363 | XC_NETFLOW, | |
364 | XC_MIRROR, | |
365 | XC_LEARN, | |
366 | XC_NORMAL, | |
367 | XC_FIN_TIMEOUT, | |
1e684d7d | 368 | XC_GROUP, |
a36de779 | 369 | XC_TNL_ARP, |
b256dc52 JS |
370 | }; |
371 | ||
372 | /* xlate_cache entries hold enough information to perform the side effects of | |
373 | * xlate_actions() for a rule, without needing to perform rule translation | |
374 | * from scratch. The primary usage of these is to submit statistics to objects | |
375 | * that a flow relates to, although they may be used for other effects as well | |
376 | * (for instance, refreshing hard timeouts for learned flows). */ | |
377 | struct xc_entry { | |
378 | enum xc_type type; | |
379 | union { | |
380 | struct rule_dpif *rule; | |
381 | struct { | |
382 | struct netdev *tx; | |
383 | struct netdev *rx; | |
384 | struct bfd *bfd; | |
385 | } dev; | |
386 | struct { | |
387 | struct netflow *netflow; | |
388 | struct flow *flow; | |
389 | ofp_port_t iface; | |
390 | } nf; | |
391 | struct { | |
392 | struct mbridge *mbridge; | |
393 | mirror_mask_t mirrors; | |
394 | } mirror; | |
395 | struct { | |
396 | struct bond *bond; | |
397 | struct flow *flow; | |
398 | uint16_t vid; | |
399 | } bond; | |
400 | struct { | |
4165b5e0 JS |
401 | struct ofproto_dpif *ofproto; |
402 | struct ofputil_flow_mod *fm; | |
403 | struct ofpbuf *ofpacts; | |
b256dc52 JS |
404 | } learn; |
405 | struct { | |
406 | struct ofproto_dpif *ofproto; | |
407 | struct flow *flow; | |
408 | int vlan; | |
409 | } normal; | |
410 | struct { | |
411 | struct rule_dpif *rule; | |
412 | uint16_t idle; | |
413 | uint16_t hard; | |
414 | } fin; | |
1e684d7d RW |
415 | struct { |
416 | struct group_dpif *group; | |
417 | struct ofputil_bucket *bucket; | |
418 | } group; | |
a36de779 PS |
419 | struct { |
420 | char br_name[IFNAMSIZ]; | |
421 | ovs_be32 d_ip; | |
422 | } tnl_arp_cache; | |
b256dc52 JS |
423 | } u; |
424 | }; | |
425 | ||
426 | #define XC_ENTRY_FOR_EACH(entry, entries, xcache) \ | |
427 | entries = xcache->entries; \ | |
428 | for (entry = ofpbuf_try_pull(&entries, sizeof *entry); \ | |
429 | entry; \ | |
430 | entry = ofpbuf_try_pull(&entries, sizeof *entry)) | |
431 | ||
432 | struct xlate_cache { | |
433 | struct ofpbuf entries; | |
434 | }; | |
435 | ||
84f0f298 RW |
436 | /* Xlate config contains hash maps of all bridges, bundles and ports. |
437 | * Xcfgp contains the pointer to the current xlate configuration. | |
438 | * When the main thread needs to change the configuration, it copies xcfgp to | |
439 | * new_xcfg and edits new_xcfg. This enables the use of RCU locking which | |
440 | * does not block handler and revalidator threads. */ | |
441 | struct xlate_cfg { | |
442 | struct hmap xbridges; | |
443 | struct hmap xbundles; | |
444 | struct hmap xports; | |
445 | }; | |
b1b72f2d | 446 | static OVSRCU_TYPE(struct xlate_cfg *) xcfgp = OVSRCU_INITIALIZER(NULL); |
f439f23b | 447 | static struct xlate_cfg *new_xcfg = NULL; |
46c88433 EJ |
448 | |
449 | static bool may_receive(const struct xport *, struct xlate_ctx *); | |
9583bc14 EJ |
450 | static void do_xlate_actions(const struct ofpact *, size_t ofpacts_len, |
451 | struct xlate_ctx *); | |
adcf00ba | 452 | static void xlate_normal(struct xlate_ctx *); |
c1b3756c BP |
453 | static inline void xlate_report(struct xlate_ctx *, const char *, ...) |
454 | OVS_PRINTF_FORMAT(2, 3); | |
6d328fa2 SH |
455 | static void xlate_table_action(struct xlate_ctx *, ofp_port_t in_port, |
456 | uint8_t table_id, bool may_packet_in, | |
457 | bool honor_table_miss); | |
46c88433 EJ |
458 | static bool input_vid_is_valid(uint16_t vid, struct xbundle *, bool warn); |
459 | static uint16_t input_vid_to_vlan(const struct xbundle *, uint16_t vid); | |
460 | static void output_normal(struct xlate_ctx *, const struct xbundle *, | |
9583bc14 | 461 | uint16_t vlan); |
e93ef1c7 JR |
462 | |
463 | /* Optional bond recirculation parameter to compose_output_action(). */ | |
464 | struct xlate_bond_recirc { | |
465 | uint32_t recirc_id; /* !0 Use recirculation instead of output. */ | |
466 | uint8_t hash_alg; /* !0 Compute hash for recirc before. */ | |
467 | uint32_t hash_basis; /* Compute hash for recirc before. */ | |
468 | }; | |
469 | ||
470 | static void compose_output_action(struct xlate_ctx *, ofp_port_t ofp_port, | |
471 | const struct xlate_bond_recirc *xr); | |
9583bc14 | 472 | |
84f0f298 RW |
473 | static struct xbridge *xbridge_lookup(struct xlate_cfg *, |
474 | const struct ofproto_dpif *); | |
475 | static struct xbundle *xbundle_lookup(struct xlate_cfg *, | |
476 | const struct ofbundle *); | |
477 | static struct xport *xport_lookup(struct xlate_cfg *, | |
478 | const struct ofport_dpif *); | |
46c88433 | 479 | static struct xport *get_ofp_port(const struct xbridge *, ofp_port_t ofp_port); |
55954f6e EJ |
480 | static struct skb_priority_to_dscp *get_skb_priority(const struct xport *, |
481 | uint32_t skb_priority); | |
482 | static void clear_skb_priorities(struct xport *); | |
16194afd | 483 | static size_t count_skb_priorities(const struct xport *); |
55954f6e EJ |
484 | static bool dscp_from_skb_priority(const struct xport *, uint32_t skb_priority, |
485 | uint8_t *dscp); | |
46c88433 | 486 | |
b256dc52 JS |
487 | static struct xc_entry *xlate_cache_add_entry(struct xlate_cache *xc, |
488 | enum xc_type type); | |
84f0f298 RW |
489 | static void xlate_xbridge_init(struct xlate_cfg *, struct xbridge *); |
490 | static void xlate_xbundle_init(struct xlate_cfg *, struct xbundle *); | |
491 | static void xlate_xport_init(struct xlate_cfg *, struct xport *); | |
9efd308e | 492 | static void xlate_xbridge_set(struct xbridge *, struct dpif *, |
9efd308e DV |
493 | const struct mac_learning *, struct stp *, |
494 | struct rstp *, const struct mcast_snooping *, | |
495 | const struct mbridge *, | |
496 | const struct dpif_sflow *, | |
497 | const struct dpif_ipfix *, | |
2f47cdf4 | 498 | const struct netflow *, |
84f0f298 | 499 | bool forward_bpdu, bool has_in_band, |
b440dd8c | 500 | const struct dpif_backer_support *); |
84f0f298 RW |
501 | static void xlate_xbundle_set(struct xbundle *xbundle, |
502 | enum port_vlan_mode vlan_mode, int vlan, | |
503 | unsigned long *trunks, bool use_priority_tags, | |
504 | const struct bond *bond, const struct lacp *lacp, | |
505 | bool floodable); | |
506 | static void xlate_xport_set(struct xport *xport, odp_port_t odp_port, | |
507 | const struct netdev *netdev, const struct cfm *cfm, | |
0477baa9 DF |
508 | const struct bfd *bfd, const struct lldp *lldp, |
509 | int stp_port_no, const struct rstp_port *rstp_port, | |
84f0f298 RW |
510 | enum ofputil_port_config config, |
511 | enum ofputil_port_state state, bool is_tunnel, | |
512 | bool may_enable); | |
513 | static void xlate_xbridge_remove(struct xlate_cfg *, struct xbridge *); | |
514 | static void xlate_xbundle_remove(struct xlate_cfg *, struct xbundle *); | |
515 | static void xlate_xport_remove(struct xlate_cfg *, struct xport *); | |
516 | static void xlate_xbridge_copy(struct xbridge *); | |
517 | static void xlate_xbundle_copy(struct xbridge *, struct xbundle *); | |
518 | static void xlate_xport_copy(struct xbridge *, struct xbundle *, | |
519 | struct xport *); | |
520 | static void xlate_xcfg_free(struct xlate_cfg *); | |
b256dc52 | 521 | |
34dd0d78 | 522 | static inline void |
c1b3756c | 523 | xlate_report(struct xlate_ctx *ctx, const char *format, ...) |
34dd0d78 JR |
524 | { |
525 | if (OVS_UNLIKELY(ctx->xin->report_hook)) { | |
c1b3756c BP |
526 | va_list args; |
527 | ||
528 | va_start(args, format); | |
529 | ctx->xin->report_hook(ctx->xin, ctx->recurse, format, args); | |
530 | va_end(args); | |
34dd0d78 JR |
531 | } |
532 | } | |
84f0f298 | 533 | |
d6bef3cc BP |
534 | static inline void |
535 | xlate_report_actions(struct xlate_ctx *ctx, const char *title, | |
536 | const struct ofpact *ofpacts, size_t ofpacts_len) | |
537 | { | |
538 | if (OVS_UNLIKELY(ctx->xin->report_hook)) { | |
539 | struct ds s = DS_EMPTY_INITIALIZER; | |
540 | ofpacts_format(ofpacts, ofpacts_len, &s); | |
541 | xlate_report(ctx, "%s: %s", title, ds_cstr(&s)); | |
542 | ds_destroy(&s); | |
543 | } | |
544 | } | |
545 | ||
84f0f298 RW |
546 | static void |
547 | xlate_xbridge_init(struct xlate_cfg *xcfg, struct xbridge *xbridge) | |
548 | { | |
549 | list_init(&xbridge->xbundles); | |
550 | hmap_init(&xbridge->xports); | |
551 | hmap_insert(&xcfg->xbridges, &xbridge->hmap_node, | |
552 | hash_pointer(xbridge->ofproto, 0)); | |
553 | } | |
554 | ||
555 | static void | |
556 | xlate_xbundle_init(struct xlate_cfg *xcfg, struct xbundle *xbundle) | |
557 | { | |
558 | list_init(&xbundle->xports); | |
559 | list_insert(&xbundle->xbridge->xbundles, &xbundle->list_node); | |
560 | hmap_insert(&xcfg->xbundles, &xbundle->hmap_node, | |
561 | hash_pointer(xbundle->ofbundle, 0)); | |
562 | } | |
563 | ||
564 | static void | |
565 | xlate_xport_init(struct xlate_cfg *xcfg, struct xport *xport) | |
566 | { | |
567 | hmap_init(&xport->skb_priorities); | |
568 | hmap_insert(&xcfg->xports, &xport->hmap_node, | |
569 | hash_pointer(xport->ofport, 0)); | |
570 | hmap_insert(&xport->xbridge->xports, &xport->ofp_node, | |
571 | hash_ofp_port(xport->ofp_port)); | |
572 | } | |
573 | ||
574 | static void | |
575 | xlate_xbridge_set(struct xbridge *xbridge, | |
576 | struct dpif *dpif, | |
ec89fc6f | 577 | const struct mac_learning *ml, struct stp *stp, |
9efd308e | 578 | struct rstp *rstp, const struct mcast_snooping *ms, |
ec89fc6f | 579 | const struct mbridge *mbridge, |
46c88433 | 580 | const struct dpif_sflow *sflow, |
ce3955be | 581 | const struct dpif_ipfix *ipfix, |
2f47cdf4 | 582 | const struct netflow *netflow, |
4b97b70d | 583 | bool forward_bpdu, bool has_in_band, |
b440dd8c | 584 | const struct dpif_backer_support *support) |
46c88433 | 585 | { |
46c88433 EJ |
586 | if (xbridge->ml != ml) { |
587 | mac_learning_unref(xbridge->ml); | |
588 | xbridge->ml = mac_learning_ref(ml); | |
589 | } | |
590 | ||
6d95c4e8 FL |
591 | if (xbridge->ms != ms) { |
592 | mcast_snooping_unref(xbridge->ms); | |
593 | xbridge->ms = mcast_snooping_ref(ms); | |
594 | } | |
595 | ||
46c88433 EJ |
596 | if (xbridge->mbridge != mbridge) { |
597 | mbridge_unref(xbridge->mbridge); | |
598 | xbridge->mbridge = mbridge_ref(mbridge); | |
599 | } | |
600 | ||
601 | if (xbridge->sflow != sflow) { | |
602 | dpif_sflow_unref(xbridge->sflow); | |
603 | xbridge->sflow = dpif_sflow_ref(sflow); | |
604 | } | |
605 | ||
606 | if (xbridge->ipfix != ipfix) { | |
607 | dpif_ipfix_unref(xbridge->ipfix); | |
608 | xbridge->ipfix = dpif_ipfix_ref(ipfix); | |
609 | } | |
610 | ||
9d189a50 EJ |
611 | if (xbridge->stp != stp) { |
612 | stp_unref(xbridge->stp); | |
613 | xbridge->stp = stp_ref(stp); | |
614 | } | |
615 | ||
9efd308e DV |
616 | if (xbridge->rstp != rstp) { |
617 | rstp_unref(xbridge->rstp); | |
618 | xbridge->rstp = rstp_ref(rstp); | |
619 | } | |
620 | ||
ce3955be EJ |
621 | if (xbridge->netflow != netflow) { |
622 | netflow_unref(xbridge->netflow); | |
623 | xbridge->netflow = netflow_ref(netflow); | |
624 | } | |
625 | ||
89a8a7f0 | 626 | xbridge->dpif = dpif; |
46c88433 EJ |
627 | xbridge->forward_bpdu = forward_bpdu; |
628 | xbridge->has_in_band = has_in_band; | |
b440dd8c | 629 | xbridge->support = *support; |
46c88433 EJ |
630 | } |
631 | ||
84f0f298 RW |
632 | static void |
633 | xlate_xbundle_set(struct xbundle *xbundle, | |
634 | enum port_vlan_mode vlan_mode, int vlan, | |
635 | unsigned long *trunks, bool use_priority_tags, | |
636 | const struct bond *bond, const struct lacp *lacp, | |
637 | bool floodable) | |
638 | { | |
639 | ovs_assert(xbundle->xbridge); | |
640 | ||
641 | xbundle->vlan_mode = vlan_mode; | |
642 | xbundle->vlan = vlan; | |
643 | xbundle->trunks = trunks; | |
644 | xbundle->use_priority_tags = use_priority_tags; | |
645 | xbundle->floodable = floodable; | |
646 | ||
647 | if (xbundle->bond != bond) { | |
648 | bond_unref(xbundle->bond); | |
649 | xbundle->bond = bond_ref(bond); | |
650 | } | |
651 | ||
652 | if (xbundle->lacp != lacp) { | |
653 | lacp_unref(xbundle->lacp); | |
654 | xbundle->lacp = lacp_ref(lacp); | |
655 | } | |
656 | } | |
657 | ||
658 | static void | |
659 | xlate_xport_set(struct xport *xport, odp_port_t odp_port, | |
660 | const struct netdev *netdev, const struct cfm *cfm, | |
0477baa9 | 661 | const struct bfd *bfd, const struct lldp *lldp, int stp_port_no, |
f025bcb7 | 662 | const struct rstp_port* rstp_port, |
84f0f298 RW |
663 | enum ofputil_port_config config, enum ofputil_port_state state, |
664 | bool is_tunnel, bool may_enable) | |
665 | { | |
666 | xport->config = config; | |
667 | xport->state = state; | |
668 | xport->stp_port_no = stp_port_no; | |
669 | xport->is_tunnel = is_tunnel; | |
670 | xport->may_enable = may_enable; | |
671 | xport->odp_port = odp_port; | |
672 | ||
f025bcb7 JR |
673 | if (xport->rstp_port != rstp_port) { |
674 | rstp_port_unref(xport->rstp_port); | |
675 | xport->rstp_port = rstp_port_ref(rstp_port); | |
676 | } | |
677 | ||
84f0f298 RW |
678 | if (xport->cfm != cfm) { |
679 | cfm_unref(xport->cfm); | |
680 | xport->cfm = cfm_ref(cfm); | |
681 | } | |
682 | ||
683 | if (xport->bfd != bfd) { | |
684 | bfd_unref(xport->bfd); | |
685 | xport->bfd = bfd_ref(bfd); | |
686 | } | |
687 | ||
0477baa9 DF |
688 | if (xport->lldp != lldp) { |
689 | lldp_unref(xport->lldp); | |
690 | xport->lldp = lldp_ref(lldp); | |
691 | } | |
692 | ||
84f0f298 RW |
693 | if (xport->netdev != netdev) { |
694 | netdev_close(xport->netdev); | |
695 | xport->netdev = netdev_ref(netdev); | |
696 | } | |
697 | } | |
698 | ||
699 | static void | |
700 | xlate_xbridge_copy(struct xbridge *xbridge) | |
701 | { | |
702 | struct xbundle *xbundle; | |
703 | struct xport *xport; | |
704 | struct xbridge *new_xbridge = xzalloc(sizeof *xbridge); | |
705 | new_xbridge->ofproto = xbridge->ofproto; | |
706 | new_xbridge->name = xstrdup(xbridge->name); | |
707 | xlate_xbridge_init(new_xcfg, new_xbridge); | |
708 | ||
709 | xlate_xbridge_set(new_xbridge, | |
34dd0d78 | 710 | xbridge->dpif, xbridge->ml, xbridge->stp, |
9efd308e DV |
711 | xbridge->rstp, xbridge->ms, xbridge->mbridge, |
712 | xbridge->sflow, xbridge->ipfix, xbridge->netflow, | |
b440dd8c JS |
713 | xbridge->forward_bpdu, xbridge->has_in_band, |
714 | &xbridge->support); | |
84f0f298 RW |
715 | LIST_FOR_EACH (xbundle, list_node, &xbridge->xbundles) { |
716 | xlate_xbundle_copy(new_xbridge, xbundle); | |
717 | } | |
718 | ||
719 | /* Copy xports which are not part of a xbundle */ | |
720 | HMAP_FOR_EACH (xport, ofp_node, &xbridge->xports) { | |
721 | if (!xport->xbundle) { | |
722 | xlate_xport_copy(new_xbridge, NULL, xport); | |
723 | } | |
724 | } | |
725 | } | |
726 | ||
727 | static void | |
728 | xlate_xbundle_copy(struct xbridge *xbridge, struct xbundle *xbundle) | |
729 | { | |
730 | struct xport *xport; | |
731 | struct xbundle *new_xbundle = xzalloc(sizeof *xbundle); | |
732 | new_xbundle->ofbundle = xbundle->ofbundle; | |
733 | new_xbundle->xbridge = xbridge; | |
734 | new_xbundle->name = xstrdup(xbundle->name); | |
735 | xlate_xbundle_init(new_xcfg, new_xbundle); | |
736 | ||
737 | xlate_xbundle_set(new_xbundle, xbundle->vlan_mode, | |
738 | xbundle->vlan, xbundle->trunks, | |
739 | xbundle->use_priority_tags, xbundle->bond, xbundle->lacp, | |
740 | xbundle->floodable); | |
741 | LIST_FOR_EACH (xport, bundle_node, &xbundle->xports) { | |
742 | xlate_xport_copy(xbridge, new_xbundle, xport); | |
743 | } | |
744 | } | |
745 | ||
746 | static void | |
747 | xlate_xport_copy(struct xbridge *xbridge, struct xbundle *xbundle, | |
748 | struct xport *xport) | |
749 | { | |
750 | struct skb_priority_to_dscp *pdscp, *new_pdscp; | |
751 | struct xport *new_xport = xzalloc(sizeof *xport); | |
752 | new_xport->ofport = xport->ofport; | |
753 | new_xport->ofp_port = xport->ofp_port; | |
754 | new_xport->xbridge = xbridge; | |
755 | xlate_xport_init(new_xcfg, new_xport); | |
756 | ||
757 | xlate_xport_set(new_xport, xport->odp_port, xport->netdev, xport->cfm, | |
0477baa9 DF |
758 | xport->bfd, xport->lldp, xport->stp_port_no, |
759 | xport->rstp_port, xport->config, xport->state, | |
760 | xport->is_tunnel, xport->may_enable); | |
84f0f298 RW |
761 | |
762 | if (xport->peer) { | |
763 | struct xport *peer = xport_lookup(new_xcfg, xport->peer->ofport); | |
764 | if (peer) { | |
765 | new_xport->peer = peer; | |
766 | new_xport->peer->peer = new_xport; | |
767 | } | |
768 | } | |
769 | ||
770 | if (xbundle) { | |
771 | new_xport->xbundle = xbundle; | |
772 | list_insert(&new_xport->xbundle->xports, &new_xport->bundle_node); | |
773 | } | |
774 | ||
775 | HMAP_FOR_EACH (pdscp, hmap_node, &xport->skb_priorities) { | |
776 | new_pdscp = xmalloc(sizeof *pdscp); | |
777 | new_pdscp->skb_priority = pdscp->skb_priority; | |
778 | new_pdscp->dscp = pdscp->dscp; | |
779 | hmap_insert(&new_xport->skb_priorities, &new_pdscp->hmap_node, | |
780 | hash_int(new_pdscp->skb_priority, 0)); | |
781 | } | |
782 | } | |
783 | ||
784 | /* Sets the current xlate configuration to new_xcfg and frees the old xlate | |
785 | * configuration in xcfgp. | |
786 | * | |
787 | * This needs to be called after editing the xlate configuration. | |
788 | * | |
789 | * Functions that edit the new xlate configuration are | |
790 | * xlate_<ofport/bundle/ofport>_set and xlate_<ofport/bundle/ofport>_remove. | |
791 | * | |
792 | * A sample workflow: | |
793 | * | |
794 | * xlate_txn_start(); | |
795 | * ... | |
796 | * edit_xlate_configuration(); | |
797 | * ... | |
798 | * xlate_txn_commit(); */ | |
46c88433 | 799 | void |
84f0f298 RW |
800 | xlate_txn_commit(void) |
801 | { | |
802 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
803 | ||
804 | ovsrcu_set(&xcfgp, new_xcfg); | |
40a9c4c2 AW |
805 | ovsrcu_synchronize(); |
806 | xlate_xcfg_free(xcfg); | |
84f0f298 RW |
807 | new_xcfg = NULL; |
808 | } | |
809 | ||
810 | /* Copies the current xlate configuration in xcfgp to new_xcfg. | |
811 | * | |
812 | * This needs to be called prior to editing the xlate configuration. */ | |
813 | void | |
814 | xlate_txn_start(void) | |
815 | { | |
816 | struct xbridge *xbridge; | |
817 | struct xlate_cfg *xcfg; | |
818 | ||
819 | ovs_assert(!new_xcfg); | |
820 | ||
821 | new_xcfg = xmalloc(sizeof *new_xcfg); | |
822 | hmap_init(&new_xcfg->xbridges); | |
823 | hmap_init(&new_xcfg->xbundles); | |
824 | hmap_init(&new_xcfg->xports); | |
825 | ||
826 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
827 | if (!xcfg) { | |
828 | return; | |
829 | } | |
830 | ||
831 | HMAP_FOR_EACH (xbridge, hmap_node, &xcfg->xbridges) { | |
832 | xlate_xbridge_copy(xbridge); | |
833 | } | |
834 | } | |
835 | ||
836 | ||
837 | static void | |
838 | xlate_xcfg_free(struct xlate_cfg *xcfg) | |
839 | { | |
840 | struct xbridge *xbridge, *next_xbridge; | |
841 | ||
842 | if (!xcfg) { | |
843 | return; | |
844 | } | |
845 | ||
846 | HMAP_FOR_EACH_SAFE (xbridge, next_xbridge, hmap_node, &xcfg->xbridges) { | |
847 | xlate_xbridge_remove(xcfg, xbridge); | |
848 | } | |
849 | ||
850 | hmap_destroy(&xcfg->xbridges); | |
851 | hmap_destroy(&xcfg->xbundles); | |
852 | hmap_destroy(&xcfg->xports); | |
853 | free(xcfg); | |
854 | } | |
855 | ||
856 | void | |
857 | xlate_ofproto_set(struct ofproto_dpif *ofproto, const char *name, | |
34dd0d78 | 858 | struct dpif *dpif, |
84f0f298 | 859 | const struct mac_learning *ml, struct stp *stp, |
9efd308e | 860 | struct rstp *rstp, const struct mcast_snooping *ms, |
84f0f298 RW |
861 | const struct mbridge *mbridge, |
862 | const struct dpif_sflow *sflow, | |
863 | const struct dpif_ipfix *ipfix, | |
2f47cdf4 | 864 | const struct netflow *netflow, |
b440dd8c JS |
865 | bool forward_bpdu, bool has_in_band, |
866 | const struct dpif_backer_support *support) | |
84f0f298 RW |
867 | { |
868 | struct xbridge *xbridge; | |
869 | ||
870 | ovs_assert(new_xcfg); | |
871 | ||
872 | xbridge = xbridge_lookup(new_xcfg, ofproto); | |
873 | if (!xbridge) { | |
874 | xbridge = xzalloc(sizeof *xbridge); | |
875 | xbridge->ofproto = ofproto; | |
876 | ||
877 | xlate_xbridge_init(new_xcfg, xbridge); | |
878 | } | |
879 | ||
880 | free(xbridge->name); | |
881 | xbridge->name = xstrdup(name); | |
882 | ||
34dd0d78 | 883 | xlate_xbridge_set(xbridge, dpif, ml, stp, rstp, ms, mbridge, sflow, ipfix, |
b440dd8c | 884 | netflow, forward_bpdu, has_in_band, support); |
84f0f298 RW |
885 | } |
886 | ||
887 | static void | |
888 | xlate_xbridge_remove(struct xlate_cfg *xcfg, struct xbridge *xbridge) | |
46c88433 | 889 | { |
46c88433 EJ |
890 | struct xbundle *xbundle, *next_xbundle; |
891 | struct xport *xport, *next_xport; | |
892 | ||
893 | if (!xbridge) { | |
894 | return; | |
895 | } | |
896 | ||
897 | HMAP_FOR_EACH_SAFE (xport, next_xport, ofp_node, &xbridge->xports) { | |
84f0f298 | 898 | xlate_xport_remove(xcfg, xport); |
46c88433 EJ |
899 | } |
900 | ||
901 | LIST_FOR_EACH_SAFE (xbundle, next_xbundle, list_node, &xbridge->xbundles) { | |
84f0f298 | 902 | xlate_xbundle_remove(xcfg, xbundle); |
46c88433 EJ |
903 | } |
904 | ||
84f0f298 | 905 | hmap_remove(&xcfg->xbridges, &xbridge->hmap_node); |
795cc5c1 | 906 | mac_learning_unref(xbridge->ml); |
6d95c4e8 | 907 | mcast_snooping_unref(xbridge->ms); |
795cc5c1 EJ |
908 | mbridge_unref(xbridge->mbridge); |
909 | dpif_sflow_unref(xbridge->sflow); | |
910 | dpif_ipfix_unref(xbridge->ipfix); | |
911 | stp_unref(xbridge->stp); | |
9efd308e | 912 | rstp_unref(xbridge->rstp); |
795cc5c1 | 913 | hmap_destroy(&xbridge->xports); |
46c88433 EJ |
914 | free(xbridge->name); |
915 | free(xbridge); | |
916 | } | |
917 | ||
84f0f298 RW |
918 | void |
919 | xlate_remove_ofproto(struct ofproto_dpif *ofproto) | |
920 | { | |
921 | struct xbridge *xbridge; | |
922 | ||
923 | ovs_assert(new_xcfg); | |
924 | ||
925 | xbridge = xbridge_lookup(new_xcfg, ofproto); | |
926 | xlate_xbridge_remove(new_xcfg, xbridge); | |
927 | } | |
928 | ||
46c88433 EJ |
929 | void |
930 | xlate_bundle_set(struct ofproto_dpif *ofproto, struct ofbundle *ofbundle, | |
931 | const char *name, enum port_vlan_mode vlan_mode, int vlan, | |
932 | unsigned long *trunks, bool use_priority_tags, | |
933 | const struct bond *bond, const struct lacp *lacp, | |
934 | bool floodable) | |
935 | { | |
84f0f298 | 936 | struct xbundle *xbundle; |
46c88433 | 937 | |
84f0f298 RW |
938 | ovs_assert(new_xcfg); |
939 | ||
940 | xbundle = xbundle_lookup(new_xcfg, ofbundle); | |
46c88433 EJ |
941 | if (!xbundle) { |
942 | xbundle = xzalloc(sizeof *xbundle); | |
943 | xbundle->ofbundle = ofbundle; | |
84f0f298 | 944 | xbundle->xbridge = xbridge_lookup(new_xcfg, ofproto); |
46c88433 | 945 | |
84f0f298 | 946 | xlate_xbundle_init(new_xcfg, xbundle); |
46c88433 EJ |
947 | } |
948 | ||
46c88433 EJ |
949 | free(xbundle->name); |
950 | xbundle->name = xstrdup(name); | |
951 | ||
84f0f298 RW |
952 | xlate_xbundle_set(xbundle, vlan_mode, vlan, trunks, |
953 | use_priority_tags, bond, lacp, floodable); | |
46c88433 EJ |
954 | } |
955 | ||
84f0f298 RW |
956 | static void |
957 | xlate_xbundle_remove(struct xlate_cfg *xcfg, struct xbundle *xbundle) | |
46c88433 | 958 | { |
5f03c983 | 959 | struct xport *xport; |
46c88433 EJ |
960 | |
961 | if (!xbundle) { | |
962 | return; | |
963 | } | |
964 | ||
5f03c983 | 965 | LIST_FOR_EACH_POP (xport, bundle_node, &xbundle->xports) { |
46c88433 EJ |
966 | xport->xbundle = NULL; |
967 | } | |
968 | ||
84f0f298 | 969 | hmap_remove(&xcfg->xbundles, &xbundle->hmap_node); |
46c88433 EJ |
970 | list_remove(&xbundle->list_node); |
971 | bond_unref(xbundle->bond); | |
972 | lacp_unref(xbundle->lacp); | |
973 | free(xbundle->name); | |
974 | free(xbundle); | |
975 | } | |
976 | ||
84f0f298 RW |
977 | void |
978 | xlate_bundle_remove(struct ofbundle *ofbundle) | |
979 | { | |
980 | struct xbundle *xbundle; | |
981 | ||
982 | ovs_assert(new_xcfg); | |
983 | ||
984 | xbundle = xbundle_lookup(new_xcfg, ofbundle); | |
985 | xlate_xbundle_remove(new_xcfg, xbundle); | |
986 | } | |
987 | ||
46c88433 EJ |
988 | void |
989 | xlate_ofport_set(struct ofproto_dpif *ofproto, struct ofbundle *ofbundle, | |
990 | struct ofport_dpif *ofport, ofp_port_t ofp_port, | |
991 | odp_port_t odp_port, const struct netdev *netdev, | |
992 | const struct cfm *cfm, const struct bfd *bfd, | |
0477baa9 DF |
993 | const struct lldp *lldp, struct ofport_dpif *peer, |
994 | int stp_port_no, const struct rstp_port *rstp_port, | |
55954f6e | 995 | const struct ofproto_port_queue *qdscp_list, size_t n_qdscp, |
dd8cd4b4 SH |
996 | enum ofputil_port_config config, |
997 | enum ofputil_port_state state, bool is_tunnel, | |
9d189a50 | 998 | bool may_enable) |
46c88433 | 999 | { |
55954f6e | 1000 | size_t i; |
84f0f298 RW |
1001 | struct xport *xport; |
1002 | ||
1003 | ovs_assert(new_xcfg); | |
46c88433 | 1004 | |
84f0f298 | 1005 | xport = xport_lookup(new_xcfg, ofport); |
46c88433 EJ |
1006 | if (!xport) { |
1007 | xport = xzalloc(sizeof *xport); | |
1008 | xport->ofport = ofport; | |
84f0f298 | 1009 | xport->xbridge = xbridge_lookup(new_xcfg, ofproto); |
46c88433 EJ |
1010 | xport->ofp_port = ofp_port; |
1011 | ||
84f0f298 | 1012 | xlate_xport_init(new_xcfg, xport); |
46c88433 EJ |
1013 | } |
1014 | ||
1015 | ovs_assert(xport->ofp_port == ofp_port); | |
1016 | ||
0477baa9 DF |
1017 | xlate_xport_set(xport, odp_port, netdev, cfm, bfd, lldp, |
1018 | stp_port_no, rstp_port, config, state, is_tunnel, | |
1019 | may_enable); | |
46c88433 EJ |
1020 | |
1021 | if (xport->peer) { | |
1022 | xport->peer->peer = NULL; | |
1023 | } | |
84f0f298 | 1024 | xport->peer = xport_lookup(new_xcfg, peer); |
46c88433 EJ |
1025 | if (xport->peer) { |
1026 | xport->peer->peer = xport; | |
1027 | } | |
1028 | ||
1029 | if (xport->xbundle) { | |
1030 | list_remove(&xport->bundle_node); | |
1031 | } | |
84f0f298 | 1032 | xport->xbundle = xbundle_lookup(new_xcfg, ofbundle); |
46c88433 EJ |
1033 | if (xport->xbundle) { |
1034 | list_insert(&xport->xbundle->xports, &xport->bundle_node); | |
1035 | } | |
55954f6e EJ |
1036 | |
1037 | clear_skb_priorities(xport); | |
1038 | for (i = 0; i < n_qdscp; i++) { | |
1039 | struct skb_priority_to_dscp *pdscp; | |
1040 | uint32_t skb_priority; | |
1041 | ||
89a8a7f0 EJ |
1042 | if (dpif_queue_to_priority(xport->xbridge->dpif, qdscp_list[i].queue, |
1043 | &skb_priority)) { | |
55954f6e EJ |
1044 | continue; |
1045 | } | |
1046 | ||
1047 | pdscp = xmalloc(sizeof *pdscp); | |
1048 | pdscp->skb_priority = skb_priority; | |
1049 | pdscp->dscp = (qdscp_list[i].dscp << 2) & IP_DSCP_MASK; | |
1050 | hmap_insert(&xport->skb_priorities, &pdscp->hmap_node, | |
1051 | hash_int(pdscp->skb_priority, 0)); | |
1052 | } | |
46c88433 EJ |
1053 | } |
1054 | ||
84f0f298 RW |
1055 | static void |
1056 | xlate_xport_remove(struct xlate_cfg *xcfg, struct xport *xport) | |
46c88433 | 1057 | { |
46c88433 EJ |
1058 | if (!xport) { |
1059 | return; | |
1060 | } | |
1061 | ||
1062 | if (xport->peer) { | |
1063 | xport->peer->peer = NULL; | |
1064 | xport->peer = NULL; | |
1065 | } | |
1066 | ||
e621a12d EJ |
1067 | if (xport->xbundle) { |
1068 | list_remove(&xport->bundle_node); | |
1069 | } | |
1070 | ||
55954f6e EJ |
1071 | clear_skb_priorities(xport); |
1072 | hmap_destroy(&xport->skb_priorities); | |
1073 | ||
84f0f298 | 1074 | hmap_remove(&xcfg->xports, &xport->hmap_node); |
46c88433 EJ |
1075 | hmap_remove(&xport->xbridge->xports, &xport->ofp_node); |
1076 | ||
1077 | netdev_close(xport->netdev); | |
f025bcb7 | 1078 | rstp_port_unref(xport->rstp_port); |
46c88433 EJ |
1079 | cfm_unref(xport->cfm); |
1080 | bfd_unref(xport->bfd); | |
0477baa9 | 1081 | lldp_unref(xport->lldp); |
46c88433 EJ |
1082 | free(xport); |
1083 | } | |
1084 | ||
84f0f298 RW |
1085 | void |
1086 | xlate_ofport_remove(struct ofport_dpif *ofport) | |
1087 | { | |
1088 | struct xport *xport; | |
1089 | ||
1090 | ovs_assert(new_xcfg); | |
1091 | ||
1092 | xport = xport_lookup(new_xcfg, ofport); | |
1093 | xlate_xport_remove(new_xcfg, xport); | |
1094 | } | |
1095 | ||
ef377a58 JR |
1096 | static struct ofproto_dpif * |
1097 | xlate_lookup_ofproto_(const struct dpif_backer *backer, const struct flow *flow, | |
1098 | ofp_port_t *ofp_in_port, const struct xport **xportp) | |
1099 | { | |
e672ff9b | 1100 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
ef377a58 | 1101 | const struct xport *xport; |
f9038ef6 | 1102 | |
e672ff9b JR |
1103 | xport = xport_lookup(xcfg, tnl_port_should_receive(flow) |
1104 | ? tnl_port_receive(flow) | |
1105 | : odp_port_to_ofport(backer, flow->in_port.odp_port)); | |
1106 | if (OVS_UNLIKELY(!xport)) { | |
1107 | return NULL; | |
ef377a58 | 1108 | } |
e672ff9b | 1109 | *xportp = xport; |
f9038ef6 | 1110 | if (ofp_in_port) { |
e672ff9b | 1111 | *ofp_in_port = xport->ofp_port; |
f9038ef6 | 1112 | } |
e672ff9b | 1113 | return xport->xbridge->ofproto; |
ef377a58 JR |
1114 | } |
1115 | ||
1116 | /* Given a datapath and flow metadata ('backer', and 'flow' respectively) | |
1117 | * returns the corresponding struct ofproto_dpif and OpenFlow port number. */ | |
1118 | struct ofproto_dpif * | |
1119 | xlate_lookup_ofproto(const struct dpif_backer *backer, const struct flow *flow, | |
1120 | ofp_port_t *ofp_in_port) | |
1121 | { | |
1122 | const struct xport *xport; | |
1123 | ||
1124 | return xlate_lookup_ofproto_(backer, flow, ofp_in_port, &xport); | |
1125 | } | |
1126 | ||
cc377352 | 1127 | /* Given a datapath and flow metadata ('backer', and 'flow' respectively), |
ef377a58 | 1128 | * optionally populates 'ofproto' with the ofproto_dpif, 'ofp_in_port' with the |
cc377352 | 1129 | * openflow in_port, and 'ipfix', 'sflow', and 'netflow' with the appropriate |
dcc2c6cd JR |
1130 | * handles for those protocols if they're enabled. Caller may use the returned |
1131 | * pointers until quiescing, for longer term use additional references must | |
1132 | * be taken. | |
8449c4d6 | 1133 | * |
f9038ef6 | 1134 | * Returns 0 if successful, ENODEV if the parsed flow has no associated ofproto. |
ef377a58 | 1135 | */ |
8449c4d6 | 1136 | int |
5c476ea3 JR |
1137 | xlate_lookup(const struct dpif_backer *backer, const struct flow *flow, |
1138 | struct ofproto_dpif **ofprotop, struct dpif_ipfix **ipfix, | |
1139 | struct dpif_sflow **sflow, struct netflow **netflow, | |
1140 | ofp_port_t *ofp_in_port) | |
8449c4d6 | 1141 | { |
ef377a58 | 1142 | struct ofproto_dpif *ofproto; |
84f0f298 | 1143 | const struct xport *xport; |
8449c4d6 | 1144 | |
ef377a58 | 1145 | ofproto = xlate_lookup_ofproto_(backer, flow, ofp_in_port, &xport); |
8449c4d6 | 1146 | |
f9038ef6 | 1147 | if (!ofproto) { |
cc377352 | 1148 | return ENODEV; |
8449c4d6 | 1149 | } |
8449c4d6 | 1150 | |
ef377a58 JR |
1151 | if (ofprotop) { |
1152 | *ofprotop = ofproto; | |
8449c4d6 EJ |
1153 | } |
1154 | ||
1dfdb9b3 | 1155 | if (ipfix) { |
f9038ef6 | 1156 | *ipfix = xport ? xport->xbridge->ipfix : NULL; |
1dfdb9b3 EJ |
1157 | } |
1158 | ||
1159 | if (sflow) { | |
f9038ef6 | 1160 | *sflow = xport ? xport->xbridge->sflow : NULL; |
1dfdb9b3 EJ |
1161 | } |
1162 | ||
1163 | if (netflow) { | |
f9038ef6 | 1164 | *netflow = xport ? xport->xbridge->netflow : NULL; |
1dfdb9b3 | 1165 | } |
f9038ef6 | 1166 | |
cc377352 | 1167 | return 0; |
8449c4d6 EJ |
1168 | } |
1169 | ||
46c88433 | 1170 | static struct xbridge * |
84f0f298 | 1171 | xbridge_lookup(struct xlate_cfg *xcfg, const struct ofproto_dpif *ofproto) |
46c88433 | 1172 | { |
84f0f298 | 1173 | struct hmap *xbridges; |
46c88433 EJ |
1174 | struct xbridge *xbridge; |
1175 | ||
84f0f298 | 1176 | if (!ofproto || !xcfg) { |
5e6af486 EJ |
1177 | return NULL; |
1178 | } | |
1179 | ||
84f0f298 RW |
1180 | xbridges = &xcfg->xbridges; |
1181 | ||
46c88433 | 1182 | HMAP_FOR_EACH_IN_BUCKET (xbridge, hmap_node, hash_pointer(ofproto, 0), |
84f0f298 | 1183 | xbridges) { |
46c88433 EJ |
1184 | if (xbridge->ofproto == ofproto) { |
1185 | return xbridge; | |
1186 | } | |
1187 | } | |
1188 | return NULL; | |
1189 | } | |
1190 | ||
1191 | static struct xbundle * | |
84f0f298 | 1192 | xbundle_lookup(struct xlate_cfg *xcfg, const struct ofbundle *ofbundle) |
46c88433 | 1193 | { |
84f0f298 | 1194 | struct hmap *xbundles; |
46c88433 EJ |
1195 | struct xbundle *xbundle; |
1196 | ||
84f0f298 | 1197 | if (!ofbundle || !xcfg) { |
5e6af486 EJ |
1198 | return NULL; |
1199 | } | |
1200 | ||
84f0f298 RW |
1201 | xbundles = &xcfg->xbundles; |
1202 | ||
46c88433 | 1203 | HMAP_FOR_EACH_IN_BUCKET (xbundle, hmap_node, hash_pointer(ofbundle, 0), |
84f0f298 | 1204 | xbundles) { |
46c88433 EJ |
1205 | if (xbundle->ofbundle == ofbundle) { |
1206 | return xbundle; | |
1207 | } | |
1208 | } | |
1209 | return NULL; | |
1210 | } | |
1211 | ||
1212 | static struct xport * | |
84f0f298 | 1213 | xport_lookup(struct xlate_cfg *xcfg, const struct ofport_dpif *ofport) |
46c88433 | 1214 | { |
84f0f298 | 1215 | struct hmap *xports; |
46c88433 EJ |
1216 | struct xport *xport; |
1217 | ||
84f0f298 | 1218 | if (!ofport || !xcfg) { |
5e6af486 EJ |
1219 | return NULL; |
1220 | } | |
1221 | ||
84f0f298 RW |
1222 | xports = &xcfg->xports; |
1223 | ||
46c88433 | 1224 | HMAP_FOR_EACH_IN_BUCKET (xport, hmap_node, hash_pointer(ofport, 0), |
84f0f298 | 1225 | xports) { |
46c88433 EJ |
1226 | if (xport->ofport == ofport) { |
1227 | return xport; | |
1228 | } | |
1229 | } | |
1230 | return NULL; | |
1231 | } | |
1232 | ||
40085e56 EJ |
1233 | static struct stp_port * |
1234 | xport_get_stp_port(const struct xport *xport) | |
1235 | { | |
92cf817b | 1236 | return xport->xbridge->stp && xport->stp_port_no != -1 |
40085e56 EJ |
1237 | ? stp_get_port(xport->xbridge->stp, xport->stp_port_no) |
1238 | : NULL; | |
1239 | } | |
9d189a50 | 1240 | |
0d1cee12 | 1241 | static bool |
9d189a50 EJ |
1242 | xport_stp_learn_state(const struct xport *xport) |
1243 | { | |
40085e56 | 1244 | struct stp_port *sp = xport_get_stp_port(xport); |
4b5f1996 DV |
1245 | return sp |
1246 | ? stp_learn_in_state(stp_port_get_state(sp)) | |
1247 | : true; | |
9d189a50 EJ |
1248 | } |
1249 | ||
1250 | static bool | |
1251 | xport_stp_forward_state(const struct xport *xport) | |
1252 | { | |
40085e56 | 1253 | struct stp_port *sp = xport_get_stp_port(xport); |
4b5f1996 DV |
1254 | return sp |
1255 | ? stp_forward_in_state(stp_port_get_state(sp)) | |
1256 | : true; | |
9d189a50 EJ |
1257 | } |
1258 | ||
0d1cee12 | 1259 | static bool |
bacdb85a | 1260 | xport_stp_should_forward_bpdu(const struct xport *xport) |
0d1cee12 K |
1261 | { |
1262 | struct stp_port *sp = xport_get_stp_port(xport); | |
bacdb85a | 1263 | return stp_should_forward_bpdu(sp ? stp_port_get_state(sp) : STP_DISABLED); |
0d1cee12 K |
1264 | } |
1265 | ||
9d189a50 EJ |
1266 | /* Returns true if STP should process 'flow'. Sets fields in 'wc' that |
1267 | * were used to make the determination.*/ | |
1268 | static bool | |
1269 | stp_should_process_flow(const struct flow *flow, struct flow_wildcards *wc) | |
1270 | { | |
bbbca389 | 1271 | /* is_stp() also checks dl_type, but dl_type is always set in 'wc'. */ |
9d189a50 | 1272 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); |
bbbca389 | 1273 | return is_stp(flow); |
9d189a50 EJ |
1274 | } |
1275 | ||
1276 | static void | |
cf62fa4c | 1277 | stp_process_packet(const struct xport *xport, const struct dp_packet *packet) |
9d189a50 | 1278 | { |
40085e56 | 1279 | struct stp_port *sp = xport_get_stp_port(xport); |
cf62fa4c PS |
1280 | struct dp_packet payload = *packet; |
1281 | struct eth_header *eth = dp_packet_data(&payload); | |
9d189a50 EJ |
1282 | |
1283 | /* Sink packets on ports that have STP disabled when the bridge has | |
1284 | * STP enabled. */ | |
1285 | if (!sp || stp_port_get_state(sp) == STP_DISABLED) { | |
1286 | return; | |
1287 | } | |
1288 | ||
1289 | /* Trim off padding on payload. */ | |
cf62fa4c PS |
1290 | if (dp_packet_size(&payload) > ntohs(eth->eth_type) + ETH_HEADER_LEN) { |
1291 | dp_packet_set_size(&payload, ntohs(eth->eth_type) + ETH_HEADER_LEN); | |
9d189a50 EJ |
1292 | } |
1293 | ||
cf62fa4c PS |
1294 | if (dp_packet_try_pull(&payload, ETH_HEADER_LEN + LLC_HEADER_LEN)) { |
1295 | stp_received_bpdu(sp, dp_packet_data(&payload), dp_packet_size(&payload)); | |
9d189a50 EJ |
1296 | } |
1297 | } | |
1298 | ||
f025bcb7 JR |
1299 | static enum rstp_state |
1300 | xport_get_rstp_port_state(const struct xport *xport) | |
9efd308e | 1301 | { |
f025bcb7 JR |
1302 | return xport->rstp_port |
1303 | ? rstp_port_get_state(xport->rstp_port) | |
1304 | : RSTP_DISABLED; | |
9efd308e DV |
1305 | } |
1306 | ||
1307 | static bool | |
1308 | xport_rstp_learn_state(const struct xport *xport) | |
1309 | { | |
4b5f1996 DV |
1310 | return xport->xbridge->rstp && xport->rstp_port |
1311 | ? rstp_learn_in_state(xport_get_rstp_port_state(xport)) | |
1312 | : true; | |
9efd308e DV |
1313 | } |
1314 | ||
1315 | static bool | |
1316 | xport_rstp_forward_state(const struct xport *xport) | |
1317 | { | |
4b5f1996 DV |
1318 | return xport->xbridge->rstp && xport->rstp_port |
1319 | ? rstp_forward_in_state(xport_get_rstp_port_state(xport)) | |
1320 | : true; | |
9efd308e DV |
1321 | } |
1322 | ||
1323 | static bool | |
1324 | xport_rstp_should_manage_bpdu(const struct xport *xport) | |
1325 | { | |
f025bcb7 | 1326 | return rstp_should_manage_bpdu(xport_get_rstp_port_state(xport)); |
9efd308e DV |
1327 | } |
1328 | ||
1329 | static void | |
cf62fa4c | 1330 | rstp_process_packet(const struct xport *xport, const struct dp_packet *packet) |
9efd308e | 1331 | { |
cf62fa4c PS |
1332 | struct dp_packet payload = *packet; |
1333 | struct eth_header *eth = dp_packet_data(&payload); | |
9efd308e | 1334 | |
f025bcb7 JR |
1335 | /* Sink packets on ports that have no RSTP. */ |
1336 | if (!xport->rstp_port) { | |
9efd308e DV |
1337 | return; |
1338 | } | |
1339 | ||
1340 | /* Trim off padding on payload. */ | |
cf62fa4c PS |
1341 | if (dp_packet_size(&payload) > ntohs(eth->eth_type) + ETH_HEADER_LEN) { |
1342 | dp_packet_set_size(&payload, ntohs(eth->eth_type) + ETH_HEADER_LEN); | |
9efd308e DV |
1343 | } |
1344 | ||
cf62fa4c PS |
1345 | if (dp_packet_try_pull(&payload, ETH_HEADER_LEN + LLC_HEADER_LEN)) { |
1346 | rstp_port_received_bpdu(xport->rstp_port, dp_packet_data(&payload), | |
1347 | dp_packet_size(&payload)); | |
9efd308e DV |
1348 | } |
1349 | } | |
1350 | ||
46c88433 EJ |
1351 | static struct xport * |
1352 | get_ofp_port(const struct xbridge *xbridge, ofp_port_t ofp_port) | |
1353 | { | |
1354 | struct xport *xport; | |
1355 | ||
1356 | HMAP_FOR_EACH_IN_BUCKET (xport, ofp_node, hash_ofp_port(ofp_port), | |
1357 | &xbridge->xports) { | |
1358 | if (xport->ofp_port == ofp_port) { | |
1359 | return xport; | |
1360 | } | |
1361 | } | |
1362 | return NULL; | |
1363 | } | |
1364 | ||
1365 | static odp_port_t | |
1366 | ofp_port_to_odp_port(const struct xbridge *xbridge, ofp_port_t ofp_port) | |
1367 | { | |
1368 | const struct xport *xport = get_ofp_port(xbridge, ofp_port); | |
1369 | return xport ? xport->odp_port : ODPP_NONE; | |
1370 | } | |
1371 | ||
dd8cd4b4 SH |
1372 | static bool |
1373 | odp_port_is_alive(const struct xlate_ctx *ctx, ofp_port_t ofp_port) | |
1374 | { | |
086fa873 BP |
1375 | struct xport *xport = get_ofp_port(ctx->xbridge, ofp_port); |
1376 | return xport && xport->may_enable; | |
dd8cd4b4 SH |
1377 | } |
1378 | ||
1e684d7d | 1379 | static struct ofputil_bucket * |
dd8cd4b4 SH |
1380 | group_first_live_bucket(const struct xlate_ctx *, const struct group_dpif *, |
1381 | int depth); | |
1382 | ||
1383 | static bool | |
1384 | group_is_alive(const struct xlate_ctx *ctx, uint32_t group_id, int depth) | |
1385 | { | |
1386 | struct group_dpif *group; | |
dd8cd4b4 | 1387 | |
dc25893e AZ |
1388 | if (group_dpif_lookup(ctx->xbridge->ofproto, group_id, &group)) { |
1389 | struct ofputil_bucket *bucket; | |
dd8cd4b4 | 1390 | |
dc25893e AZ |
1391 | bucket = group_first_live_bucket(ctx, group, depth); |
1392 | group_dpif_unref(group); | |
1393 | return bucket == NULL; | |
1394 | } | |
dd8cd4b4 | 1395 | |
dc25893e | 1396 | return false; |
dd8cd4b4 SH |
1397 | } |
1398 | ||
1399 | #define MAX_LIVENESS_RECURSION 128 /* Arbitrary limit */ | |
1400 | ||
1401 | static bool | |
1402 | bucket_is_alive(const struct xlate_ctx *ctx, | |
1e684d7d | 1403 | struct ofputil_bucket *bucket, int depth) |
dd8cd4b4 SH |
1404 | { |
1405 | if (depth >= MAX_LIVENESS_RECURSION) { | |
1406 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); | |
1407 | ||
1408 | VLOG_WARN_RL(&rl, "bucket chaining exceeded %d links", | |
1409 | MAX_LIVENESS_RECURSION); | |
1410 | return false; | |
1411 | } | |
1412 | ||
fdb1999b AZ |
1413 | return (!ofputil_bucket_has_liveness(bucket) |
1414 | || (bucket->watch_port != OFPP_ANY | |
1415 | && odp_port_is_alive(ctx, bucket->watch_port)) | |
1416 | || (bucket->watch_group != OFPG_ANY | |
1417 | && group_is_alive(ctx, bucket->watch_group, depth + 1))); | |
dd8cd4b4 SH |
1418 | } |
1419 | ||
1e684d7d | 1420 | static struct ofputil_bucket * |
dd8cd4b4 SH |
1421 | group_first_live_bucket(const struct xlate_ctx *ctx, |
1422 | const struct group_dpif *group, int depth) | |
1423 | { | |
1424 | struct ofputil_bucket *bucket; | |
ca6ba700 | 1425 | const struct ovs_list *buckets; |
dd8cd4b4 SH |
1426 | |
1427 | group_dpif_get_buckets(group, &buckets); | |
1428 | LIST_FOR_EACH (bucket, list_node, buckets) { | |
1429 | if (bucket_is_alive(ctx, bucket, depth)) { | |
1430 | return bucket; | |
1431 | } | |
1432 | } | |
1433 | ||
1434 | return NULL; | |
1435 | } | |
1436 | ||
1e684d7d | 1437 | static struct ofputil_bucket * |
fe7e5749 SH |
1438 | group_best_live_bucket(const struct xlate_ctx *ctx, |
1439 | const struct group_dpif *group, | |
1440 | uint32_t basis) | |
1441 | { | |
1e684d7d | 1442 | struct ofputil_bucket *best_bucket = NULL; |
fe7e5749 SH |
1443 | uint32_t best_score = 0; |
1444 | int i = 0; | |
1445 | ||
1e684d7d | 1446 | struct ofputil_bucket *bucket; |
ca6ba700 | 1447 | const struct ovs_list *buckets; |
fe7e5749 SH |
1448 | |
1449 | group_dpif_get_buckets(group, &buckets); | |
1450 | LIST_FOR_EACH (bucket, list_node, buckets) { | |
1451 | if (bucket_is_alive(ctx, bucket, 0)) { | |
7cb279c2 | 1452 | uint32_t score = (hash_int(i, basis) & 0xffff) * bucket->weight; |
fe7e5749 SH |
1453 | if (score >= best_score) { |
1454 | best_bucket = bucket; | |
1455 | best_score = score; | |
1456 | } | |
1457 | } | |
1458 | i++; | |
1459 | } | |
1460 | ||
1461 | return best_bucket; | |
1462 | } | |
1463 | ||
9583bc14 | 1464 | static bool |
46c88433 | 1465 | xbundle_trunks_vlan(const struct xbundle *bundle, uint16_t vlan) |
9583bc14 EJ |
1466 | { |
1467 | return (bundle->vlan_mode != PORT_VLAN_ACCESS | |
1468 | && (!bundle->trunks || bitmap_is_set(bundle->trunks, vlan))); | |
1469 | } | |
1470 | ||
1471 | static bool | |
46c88433 EJ |
1472 | xbundle_includes_vlan(const struct xbundle *xbundle, uint16_t vlan) |
1473 | { | |
1474 | return vlan == xbundle->vlan || xbundle_trunks_vlan(xbundle, vlan); | |
1475 | } | |
1476 | ||
1477 | static mirror_mask_t | |
1478 | xbundle_mirror_out(const struct xbridge *xbridge, struct xbundle *xbundle) | |
1479 | { | |
1480 | return xbundle != &ofpp_none_bundle | |
1481 | ? mirror_bundle_out(xbridge->mbridge, xbundle->ofbundle) | |
1482 | : 0; | |
1483 | } | |
1484 | ||
1485 | static mirror_mask_t | |
1486 | xbundle_mirror_src(const struct xbridge *xbridge, struct xbundle *xbundle) | |
9583bc14 | 1487 | { |
46c88433 EJ |
1488 | return xbundle != &ofpp_none_bundle |
1489 | ? mirror_bundle_src(xbridge->mbridge, xbundle->ofbundle) | |
1490 | : 0; | |
9583bc14 EJ |
1491 | } |
1492 | ||
46c88433 EJ |
1493 | static mirror_mask_t |
1494 | xbundle_mirror_dst(const struct xbridge *xbridge, struct xbundle *xbundle) | |
9583bc14 | 1495 | { |
46c88433 EJ |
1496 | return xbundle != &ofpp_none_bundle |
1497 | ? mirror_bundle_dst(xbridge->mbridge, xbundle->ofbundle) | |
1498 | : 0; | |
1499 | } | |
1500 | ||
1501 | static struct xbundle * | |
1502 | lookup_input_bundle(const struct xbridge *xbridge, ofp_port_t in_port, | |
1503 | bool warn, struct xport **in_xportp) | |
1504 | { | |
1505 | struct xport *xport; | |
9583bc14 EJ |
1506 | |
1507 | /* Find the port and bundle for the received packet. */ | |
46c88433 EJ |
1508 | xport = get_ofp_port(xbridge, in_port); |
1509 | if (in_xportp) { | |
1510 | *in_xportp = xport; | |
9583bc14 | 1511 | } |
46c88433 EJ |
1512 | if (xport && xport->xbundle) { |
1513 | return xport->xbundle; | |
9583bc14 EJ |
1514 | } |
1515 | ||
6362203b YT |
1516 | /* Special-case OFPP_NONE (OF1.0) and OFPP_CONTROLLER (OF1.1+), |
1517 | * which a controller may use as the ingress port for traffic that | |
1518 | * it is sourcing. */ | |
1519 | if (in_port == OFPP_CONTROLLER || in_port == OFPP_NONE) { | |
9583bc14 EJ |
1520 | return &ofpp_none_bundle; |
1521 | } | |
1522 | ||
1523 | /* Odd. A few possible reasons here: | |
1524 | * | |
1525 | * - We deleted a port but there are still a few packets queued up | |
1526 | * from it. | |
1527 | * | |
1528 | * - Someone externally added a port (e.g. "ovs-dpctl add-if") that | |
1529 | * we don't know about. | |
1530 | * | |
1531 | * - The ofproto client didn't configure the port as part of a bundle. | |
1532 | * This is particularly likely to happen if a packet was received on the | |
1533 | * port after it was created, but before the client had a chance to | |
1534 | * configure its bundle. | |
1535 | */ | |
1536 | if (warn) { | |
1537 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
1538 | ||
1539 | VLOG_WARN_RL(&rl, "bridge %s: received packet on unknown " | |
46c88433 | 1540 | "port %"PRIu16, xbridge->name, in_port); |
9583bc14 EJ |
1541 | } |
1542 | return NULL; | |
1543 | } | |
1544 | ||
1545 | static void | |
7efbc3b7 BP |
1546 | mirror_packet(struct xlate_ctx *ctx, struct xbundle *xbundle, |
1547 | mirror_mask_t mirrors) | |
9583bc14 | 1548 | { |
7efbc3b7 BP |
1549 | bool warn = ctx->xin->packet != NULL; |
1550 | uint16_t vid = vlan_tci_to_vid(ctx->xin->flow.vlan_tci); | |
1551 | if (!input_vid_is_valid(vid, xbundle, warn)) { | |
9583bc14 EJ |
1552 | return; |
1553 | } | |
7efbc3b7 | 1554 | uint16_t vlan = input_vid_to_vlan(xbundle, vid); |
9583bc14 | 1555 | |
7efbc3b7 | 1556 | const struct xbridge *xbridge = ctx->xbridge; |
9583bc14 | 1557 | |
7efbc3b7 BP |
1558 | /* Don't mirror to destinations that we've already mirrored to. */ |
1559 | mirrors &= ~ctx->mirrors; | |
9583bc14 EJ |
1560 | if (!mirrors) { |
1561 | return; | |
1562 | } | |
1563 | ||
7efbc3b7 BP |
1564 | /* Record these mirrors so that we don't mirror to them again. */ |
1565 | ctx->mirrors |= mirrors; | |
1566 | ||
1567 | if (ctx->xin->resubmit_stats) { | |
1568 | mirror_update_stats(xbridge->mbridge, mirrors, | |
1569 | ctx->xin->resubmit_stats->n_packets, | |
1570 | ctx->xin->resubmit_stats->n_bytes); | |
1571 | } | |
1572 | if (ctx->xin->xcache) { | |
1573 | struct xc_entry *entry; | |
1574 | ||
1575 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_MIRROR); | |
1576 | entry->u.mirror.mbridge = mbridge_ref(xbridge->mbridge); | |
1577 | entry->u.mirror.mirrors = mirrors; | |
1578 | } | |
9583bc14 EJ |
1579 | |
1580 | while (mirrors) { | |
7efbc3b7 | 1581 | const unsigned long *vlans; |
ec7ceaed EJ |
1582 | mirror_mask_t dup_mirrors; |
1583 | struct ofbundle *out; | |
ec7ceaed EJ |
1584 | int out_vlan; |
1585 | ||
7efbc3b7 BP |
1586 | bool has_mirror = mirror_get(xbridge->mbridge, raw_ctz(mirrors), |
1587 | &vlans, &dup_mirrors, &out, &out_vlan); | |
ec7ceaed EJ |
1588 | ovs_assert(has_mirror); |
1589 | ||
1590 | if (vlans) { | |
49a73e0c | 1591 | ctx->wc->masks.vlan_tci |= htons(VLAN_CFI | VLAN_VID_MASK); |
9583bc14 EJ |
1592 | } |
1593 | ||
7efbc3b7 | 1594 | if (vlans && !bitmap_is_set(vlans, vlan)) { |
9583bc14 EJ |
1595 | mirrors = zero_rightmost_1bit(mirrors); |
1596 | continue; | |
1597 | } | |
1598 | ||
ec7ceaed | 1599 | mirrors &= ~dup_mirrors; |
3d6151f3 | 1600 | ctx->mirrors |= dup_mirrors; |
ec7ceaed | 1601 | if (out) { |
84f0f298 RW |
1602 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
1603 | struct xbundle *out_xbundle = xbundle_lookup(xcfg, out); | |
46c88433 EJ |
1604 | if (out_xbundle) { |
1605 | output_normal(ctx, out_xbundle, vlan); | |
1606 | } | |
ec7ceaed | 1607 | } else if (vlan != out_vlan |
7efbc3b7 | 1608 | && !eth_addr_is_reserved(ctx->xin->flow.dl_dst)) { |
46c88433 | 1609 | struct xbundle *xbundle; |
9583bc14 | 1610 | |
46c88433 EJ |
1611 | LIST_FOR_EACH (xbundle, list_node, &xbridge->xbundles) { |
1612 | if (xbundle_includes_vlan(xbundle, out_vlan) | |
1613 | && !xbundle_mirror_out(xbridge, xbundle)) { | |
1614 | output_normal(ctx, xbundle, out_vlan); | |
9583bc14 EJ |
1615 | } |
1616 | } | |
1617 | } | |
1618 | } | |
1619 | } | |
1620 | ||
7efbc3b7 BP |
1621 | static void |
1622 | mirror_ingress_packet(struct xlate_ctx *ctx) | |
1623 | { | |
1624 | if (mbridge_has_mirrors(ctx->xbridge->mbridge)) { | |
1625 | bool warn = ctx->xin->packet != NULL; | |
1626 | struct xbundle *xbundle = lookup_input_bundle( | |
1627 | ctx->xbridge, ctx->xin->flow.in_port.ofp_port, warn, NULL); | |
1628 | if (xbundle) { | |
1629 | mirror_packet(ctx, xbundle, | |
1630 | xbundle_mirror_src(ctx->xbridge, xbundle)); | |
1631 | } | |
1632 | } | |
1633 | } | |
1634 | ||
9583bc14 | 1635 | /* Given 'vid', the VID obtained from the 802.1Q header that was received as |
46c88433 | 1636 | * part of a packet (specify 0 if there was no 802.1Q header), and 'in_xbundle', |
9583bc14 EJ |
1637 | * the bundle on which the packet was received, returns the VLAN to which the |
1638 | * packet belongs. | |
1639 | * | |
1640 | * Both 'vid' and the return value are in the range 0...4095. */ | |
1641 | static uint16_t | |
46c88433 | 1642 | input_vid_to_vlan(const struct xbundle *in_xbundle, uint16_t vid) |
9583bc14 | 1643 | { |
46c88433 | 1644 | switch (in_xbundle->vlan_mode) { |
9583bc14 | 1645 | case PORT_VLAN_ACCESS: |
46c88433 | 1646 | return in_xbundle->vlan; |
9583bc14 EJ |
1647 | break; |
1648 | ||
1649 | case PORT_VLAN_TRUNK: | |
1650 | return vid; | |
1651 | ||
1652 | case PORT_VLAN_NATIVE_UNTAGGED: | |
1653 | case PORT_VLAN_NATIVE_TAGGED: | |
46c88433 | 1654 | return vid ? vid : in_xbundle->vlan; |
9583bc14 EJ |
1655 | |
1656 | default: | |
428b2edd | 1657 | OVS_NOT_REACHED(); |
9583bc14 EJ |
1658 | } |
1659 | } | |
1660 | ||
46c88433 | 1661 | /* Checks whether a packet with the given 'vid' may ingress on 'in_xbundle'. |
9583bc14 EJ |
1662 | * If so, returns true. Otherwise, returns false and, if 'warn' is true, logs |
1663 | * a warning. | |
1664 | * | |
1665 | * 'vid' should be the VID obtained from the 802.1Q header that was received as | |
1666 | * part of a packet (specify 0 if there was no 802.1Q header), in the range | |
1667 | * 0...4095. */ | |
1668 | static bool | |
46c88433 | 1669 | input_vid_is_valid(uint16_t vid, struct xbundle *in_xbundle, bool warn) |
9583bc14 EJ |
1670 | { |
1671 | /* Allow any VID on the OFPP_NONE port. */ | |
46c88433 | 1672 | if (in_xbundle == &ofpp_none_bundle) { |
9583bc14 EJ |
1673 | return true; |
1674 | } | |
1675 | ||
46c88433 | 1676 | switch (in_xbundle->vlan_mode) { |
9583bc14 EJ |
1677 | case PORT_VLAN_ACCESS: |
1678 | if (vid) { | |
1679 | if (warn) { | |
1680 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
46c88433 | 1681 | VLOG_WARN_RL(&rl, "dropping VLAN %"PRIu16" tagged " |
9583bc14 | 1682 | "packet received on port %s configured as VLAN " |
46c88433 EJ |
1683 | "%"PRIu16" access port", vid, in_xbundle->name, |
1684 | in_xbundle->vlan); | |
9583bc14 EJ |
1685 | } |
1686 | return false; | |
1687 | } | |
1688 | return true; | |
1689 | ||
1690 | case PORT_VLAN_NATIVE_UNTAGGED: | |
1691 | case PORT_VLAN_NATIVE_TAGGED: | |
1692 | if (!vid) { | |
1693 | /* Port must always carry its native VLAN. */ | |
1694 | return true; | |
1695 | } | |
1696 | /* Fall through. */ | |
1697 | case PORT_VLAN_TRUNK: | |
46c88433 | 1698 | if (!xbundle_includes_vlan(in_xbundle, vid)) { |
9583bc14 EJ |
1699 | if (warn) { |
1700 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
46c88433 | 1701 | VLOG_WARN_RL(&rl, "dropping VLAN %"PRIu16" packet " |
9583bc14 | 1702 | "received on port %s not configured for trunking " |
46c88433 | 1703 | "VLAN %"PRIu16, vid, in_xbundle->name, vid); |
9583bc14 EJ |
1704 | } |
1705 | return false; | |
1706 | } | |
1707 | return true; | |
1708 | ||
1709 | default: | |
428b2edd | 1710 | OVS_NOT_REACHED(); |
9583bc14 EJ |
1711 | } |
1712 | ||
1713 | } | |
1714 | ||
1715 | /* Given 'vlan', the VLAN that a packet belongs to, and | |
46c88433 | 1716 | * 'out_xbundle', a bundle on which the packet is to be output, returns the VID |
9583bc14 EJ |
1717 | * that should be included in the 802.1Q header. (If the return value is 0, |
1718 | * then the 802.1Q header should only be included in the packet if there is a | |
1719 | * nonzero PCP.) | |
1720 | * | |
1721 | * Both 'vlan' and the return value are in the range 0...4095. */ | |
1722 | static uint16_t | |
46c88433 | 1723 | output_vlan_to_vid(const struct xbundle *out_xbundle, uint16_t vlan) |
9583bc14 | 1724 | { |
46c88433 | 1725 | switch (out_xbundle->vlan_mode) { |
9583bc14 EJ |
1726 | case PORT_VLAN_ACCESS: |
1727 | return 0; | |
1728 | ||
1729 | case PORT_VLAN_TRUNK: | |
1730 | case PORT_VLAN_NATIVE_TAGGED: | |
1731 | return vlan; | |
1732 | ||
1733 | case PORT_VLAN_NATIVE_UNTAGGED: | |
46c88433 | 1734 | return vlan == out_xbundle->vlan ? 0 : vlan; |
9583bc14 EJ |
1735 | |
1736 | default: | |
428b2edd | 1737 | OVS_NOT_REACHED(); |
9583bc14 EJ |
1738 | } |
1739 | } | |
1740 | ||
1741 | static void | |
46c88433 | 1742 | output_normal(struct xlate_ctx *ctx, const struct xbundle *out_xbundle, |
9583bc14 EJ |
1743 | uint16_t vlan) |
1744 | { | |
33bf9176 | 1745 | ovs_be16 *flow_tci = &ctx->xin->flow.vlan_tci; |
9583bc14 EJ |
1746 | uint16_t vid; |
1747 | ovs_be16 tci, old_tci; | |
46c88433 | 1748 | struct xport *xport; |
e93ef1c7 JR |
1749 | struct xlate_bond_recirc xr; |
1750 | bool use_recirc = false; | |
9583bc14 | 1751 | |
46c88433 EJ |
1752 | vid = output_vlan_to_vid(out_xbundle, vlan); |
1753 | if (list_is_empty(&out_xbundle->xports)) { | |
1754 | /* Partially configured bundle with no slaves. Drop the packet. */ | |
1755 | return; | |
1756 | } else if (!out_xbundle->bond) { | |
1757 | xport = CONTAINER_OF(list_front(&out_xbundle->xports), struct xport, | |
1758 | bundle_node); | |
9583bc14 | 1759 | } else { |
84f0f298 | 1760 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
49a73e0c | 1761 | struct flow_wildcards *wc = ctx->wc; |
84f0f298 | 1762 | struct ofport_dpif *ofport; |
adcf00ba | 1763 | |
2494ccd7 | 1764 | if (ctx->xbridge->support.odp.recirc) { |
e93ef1c7 JR |
1765 | use_recirc = bond_may_recirc( |
1766 | out_xbundle->bond, &xr.recirc_id, &xr.hash_basis); | |
adcf00ba | 1767 | |
e93ef1c7 | 1768 | if (use_recirc) { |
adcf00ba | 1769 | /* Only TCP mode uses recirculation. */ |
e93ef1c7 | 1770 | xr.hash_alg = OVS_HASH_ALG_L4; |
adcf00ba | 1771 | bond_update_post_recirc_rules(out_xbundle->bond, false); |
54ecb5a2 AZ |
1772 | |
1773 | /* Recirculation does not require unmasking hash fields. */ | |
1774 | wc = NULL; | |
adcf00ba AZ |
1775 | } |
1776 | } | |
46c88433 | 1777 | |
54ecb5a2 AZ |
1778 | ofport = bond_choose_output_slave(out_xbundle->bond, |
1779 | &ctx->xin->flow, wc, vid); | |
84f0f298 | 1780 | xport = xport_lookup(xcfg, ofport); |
46c88433 EJ |
1781 | |
1782 | if (!xport) { | |
9583bc14 EJ |
1783 | /* No slaves enabled, so drop packet. */ |
1784 | return; | |
1785 | } | |
d6fc5f57 | 1786 | |
e93ef1c7 | 1787 | /* If use_recirc is set, the main thread will handle stats |
b256dc52 | 1788 | * accounting for this bond. */ |
e93ef1c7 | 1789 | if (!use_recirc) { |
b256dc52 JS |
1790 | if (ctx->xin->resubmit_stats) { |
1791 | bond_account(out_xbundle->bond, &ctx->xin->flow, vid, | |
1792 | ctx->xin->resubmit_stats->n_bytes); | |
1793 | } | |
1794 | if (ctx->xin->xcache) { | |
1795 | struct xc_entry *entry; | |
1796 | struct flow *flow; | |
1797 | ||
1798 | flow = &ctx->xin->flow; | |
1799 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_BOND); | |
1800 | entry->u.bond.bond = bond_ref(out_xbundle->bond); | |
1801 | entry->u.bond.flow = xmemdup(flow, sizeof *flow); | |
1802 | entry->u.bond.vid = vid; | |
1803 | } | |
d6fc5f57 | 1804 | } |
9583bc14 EJ |
1805 | } |
1806 | ||
33bf9176 | 1807 | old_tci = *flow_tci; |
9583bc14 | 1808 | tci = htons(vid); |
46c88433 | 1809 | if (tci || out_xbundle->use_priority_tags) { |
33bf9176 | 1810 | tci |= *flow_tci & htons(VLAN_PCP_MASK); |
9583bc14 EJ |
1811 | if (tci) { |
1812 | tci |= htons(VLAN_CFI); | |
1813 | } | |
1814 | } | |
33bf9176 | 1815 | *flow_tci = tci; |
9583bc14 | 1816 | |
e93ef1c7 | 1817 | compose_output_action(ctx, xport->ofp_port, use_recirc ? &xr : NULL); |
33bf9176 | 1818 | *flow_tci = old_tci; |
9583bc14 EJ |
1819 | } |
1820 | ||
1821 | /* A VM broadcasts a gratuitous ARP to indicate that it has resumed after | |
1822 | * migration. Older Citrix-patched Linux DomU used gratuitous ARP replies to | |
1823 | * indicate this; newer upstream kernels use gratuitous ARP requests. */ | |
1824 | static bool | |
1825 | is_gratuitous_arp(const struct flow *flow, struct flow_wildcards *wc) | |
1826 | { | |
1827 | if (flow->dl_type != htons(ETH_TYPE_ARP)) { | |
1828 | return false; | |
1829 | } | |
1830 | ||
1831 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); | |
1832 | if (!eth_addr_is_broadcast(flow->dl_dst)) { | |
1833 | return false; | |
1834 | } | |
1835 | ||
1836 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); | |
1837 | if (flow->nw_proto == ARP_OP_REPLY) { | |
1838 | return true; | |
1839 | } else if (flow->nw_proto == ARP_OP_REQUEST) { | |
1840 | memset(&wc->masks.nw_src, 0xff, sizeof wc->masks.nw_src); | |
1841 | memset(&wc->masks.nw_dst, 0xff, sizeof wc->masks.nw_dst); | |
1842 | ||
1843 | return flow->nw_src == flow->nw_dst; | |
1844 | } else { | |
1845 | return false; | |
1846 | } | |
1847 | } | |
1848 | ||
ff69c24a FL |
1849 | /* Determines whether packets in 'flow' within 'xbridge' should be forwarded or |
1850 | * dropped. Returns true if they may be forwarded, false if they should be | |
1851 | * dropped. | |
1852 | * | |
1853 | * 'in_port' must be the xport that corresponds to flow->in_port. | |
1854 | * 'in_port' must be part of a bundle (e.g. in_port->bundle must be nonnull). | |
1855 | * | |
1856 | * 'vlan' must be the VLAN that corresponds to flow->vlan_tci on 'in_port', as | |
1857 | * returned by input_vid_to_vlan(). It must be a valid VLAN for 'in_port', as | |
1858 | * checked by input_vid_is_valid(). | |
1859 | * | |
1860 | * May also add tags to '*tags', although the current implementation only does | |
1861 | * so in one special case. | |
1862 | */ | |
1863 | static bool | |
1864 | is_admissible(struct xlate_ctx *ctx, struct xport *in_port, | |
1865 | uint16_t vlan) | |
1866 | { | |
1867 | struct xbundle *in_xbundle = in_port->xbundle; | |
1868 | const struct xbridge *xbridge = ctx->xbridge; | |
1869 | struct flow *flow = &ctx->xin->flow; | |
1870 | ||
1871 | /* Drop frames for reserved multicast addresses | |
1872 | * only if forward_bpdu option is absent. */ | |
1873 | if (!xbridge->forward_bpdu && eth_addr_is_reserved(flow->dl_dst)) { | |
1874 | xlate_report(ctx, "packet has reserved destination MAC, dropping"); | |
1875 | return false; | |
1876 | } | |
1877 | ||
1878 | if (in_xbundle->bond) { | |
1879 | struct mac_entry *mac; | |
1880 | ||
1881 | switch (bond_check_admissibility(in_xbundle->bond, in_port->ofport, | |
1882 | flow->dl_dst)) { | |
1883 | case BV_ACCEPT: | |
1884 | break; | |
1885 | ||
1886 | case BV_DROP: | |
1887 | xlate_report(ctx, "bonding refused admissibility, dropping"); | |
1888 | return false; | |
1889 | ||
1890 | case BV_DROP_IF_MOVED: | |
1891 | ovs_rwlock_rdlock(&xbridge->ml->rwlock); | |
1892 | mac = mac_learning_lookup(xbridge->ml, flow->dl_src, vlan); | |
9d078ec2 BP |
1893 | if (mac |
1894 | && mac_entry_get_port(xbridge->ml, mac) != in_xbundle->ofbundle | |
49a73e0c | 1895 | && (!is_gratuitous_arp(flow, ctx->wc) |
9d078ec2 | 1896 | || mac_entry_is_grat_arp_locked(mac))) { |
ff69c24a FL |
1897 | ovs_rwlock_unlock(&xbridge->ml->rwlock); |
1898 | xlate_report(ctx, "SLB bond thinks this packet looped back, " | |
1899 | "dropping"); | |
1900 | return false; | |
1901 | } | |
1902 | ovs_rwlock_unlock(&xbridge->ml->rwlock); | |
1903 | break; | |
1904 | } | |
1905 | } | |
1906 | ||
1907 | return true; | |
1908 | } | |
1909 | ||
ee047520 BP |
1910 | /* Checks whether a MAC learning update is necessary for MAC learning table |
1911 | * 'ml' given that a packet matching 'flow' was received on 'in_xbundle' in | |
1912 | * 'vlan'. | |
1913 | * | |
1914 | * Most packets processed through the MAC learning table do not actually | |
1915 | * change it in any way. This function requires only a read lock on the MAC | |
1916 | * learning table, so it is much cheaper in this common case. | |
1917 | * | |
1918 | * Keep the code here synchronized with that in update_learning_table__() | |
1919 | * below. */ | |
1920 | static bool | |
1921 | is_mac_learning_update_needed(const struct mac_learning *ml, | |
1922 | const struct flow *flow, | |
1923 | struct flow_wildcards *wc, | |
1924 | int vlan, struct xbundle *in_xbundle) | |
d6fc5f57 | 1925 | OVS_REQ_RDLOCK(ml->rwlock) |
9583bc14 EJ |
1926 | { |
1927 | struct mac_entry *mac; | |
1928 | ||
ee047520 BP |
1929 | if (!mac_learning_may_learn(ml, flow->dl_src, vlan)) { |
1930 | return false; | |
1931 | } | |
1932 | ||
1933 | mac = mac_learning_lookup(ml, flow->dl_src, vlan); | |
1934 | if (!mac || mac_entry_age(ml, mac)) { | |
1935 | return true; | |
9583bc14 EJ |
1936 | } |
1937 | ||
ee047520 BP |
1938 | if (is_gratuitous_arp(flow, wc)) { |
1939 | /* We don't want to learn from gratuitous ARP packets that are | |
1940 | * reflected back over bond slaves so we lock the learning table. */ | |
1941 | if (!in_xbundle->bond) { | |
1942 | return true; | |
1943 | } else if (mac_entry_is_grat_arp_locked(mac)) { | |
1944 | return false; | |
1945 | } | |
1946 | } | |
1947 | ||
9d078ec2 | 1948 | return mac_entry_get_port(ml, mac) != in_xbundle->ofbundle; |
ee047520 BP |
1949 | } |
1950 | ||
1951 | ||
1952 | /* Updates MAC learning table 'ml' given that a packet matching 'flow' was | |
1953 | * received on 'in_xbundle' in 'vlan'. | |
1954 | * | |
1955 | * This code repeats all the checks in is_mac_learning_update_needed() because | |
1956 | * the lock was released between there and here and thus the MAC learning state | |
1957 | * could have changed. | |
1958 | * | |
1959 | * Keep the code here synchronized with that in is_mac_learning_update_needed() | |
1960 | * above. */ | |
1961 | static void | |
1962 | update_learning_table__(const struct xbridge *xbridge, | |
1963 | const struct flow *flow, struct flow_wildcards *wc, | |
1964 | int vlan, struct xbundle *in_xbundle) | |
d6fc5f57 | 1965 | OVS_REQ_WRLOCK(xbridge->ml->rwlock) |
ee047520 BP |
1966 | { |
1967 | struct mac_entry *mac; | |
1968 | ||
46c88433 | 1969 | if (!mac_learning_may_learn(xbridge->ml, flow->dl_src, vlan)) { |
ee047520 | 1970 | return; |
9583bc14 EJ |
1971 | } |
1972 | ||
46c88433 | 1973 | mac = mac_learning_insert(xbridge->ml, flow->dl_src, vlan); |
9583bc14 EJ |
1974 | if (is_gratuitous_arp(flow, wc)) { |
1975 | /* We don't want to learn from gratuitous ARP packets that are | |
1976 | * reflected back over bond slaves so we lock the learning table. */ | |
46c88433 | 1977 | if (!in_xbundle->bond) { |
9583bc14 EJ |
1978 | mac_entry_set_grat_arp_lock(mac); |
1979 | } else if (mac_entry_is_grat_arp_locked(mac)) { | |
ee047520 | 1980 | return; |
9583bc14 EJ |
1981 | } |
1982 | } | |
1983 | ||
9d078ec2 | 1984 | if (mac_entry_get_port(xbridge->ml, mac) != in_xbundle->ofbundle) { |
9583bc14 EJ |
1985 | /* The log messages here could actually be useful in debugging, |
1986 | * so keep the rate limit relatively high. */ | |
1987 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(30, 300); | |
ee047520 | 1988 | |
9583bc14 EJ |
1989 | VLOG_DBG_RL(&rl, "bridge %s: learned that "ETH_ADDR_FMT" is " |
1990 | "on port %s in VLAN %d", | |
46c88433 EJ |
1991 | xbridge->name, ETH_ADDR_ARGS(flow->dl_src), |
1992 | in_xbundle->name, vlan); | |
9583bc14 | 1993 | |
9d078ec2 | 1994 | mac_entry_set_port(xbridge->ml, mac, in_xbundle->ofbundle); |
9583bc14 | 1995 | } |
ee047520 BP |
1996 | } |
1997 | ||
1998 | static void | |
1999 | update_learning_table(const struct xbridge *xbridge, | |
2000 | const struct flow *flow, struct flow_wildcards *wc, | |
2001 | int vlan, struct xbundle *in_xbundle) | |
2002 | { | |
2003 | bool need_update; | |
2004 | ||
2005 | /* Don't learn the OFPP_NONE port. */ | |
2006 | if (in_xbundle == &ofpp_none_bundle) { | |
2007 | return; | |
2008 | } | |
2009 | ||
2010 | /* First try the common case: no change to MAC learning table. */ | |
2011 | ovs_rwlock_rdlock(&xbridge->ml->rwlock); | |
2012 | need_update = is_mac_learning_update_needed(xbridge->ml, flow, wc, vlan, | |
2013 | in_xbundle); | |
509c0149 | 2014 | ovs_rwlock_unlock(&xbridge->ml->rwlock); |
ee047520 BP |
2015 | |
2016 | if (need_update) { | |
2017 | /* Slow path: MAC learning table might need an update. */ | |
2018 | ovs_rwlock_wrlock(&xbridge->ml->rwlock); | |
2019 | update_learning_table__(xbridge, flow, wc, vlan, in_xbundle); | |
2020 | ovs_rwlock_unlock(&xbridge->ml->rwlock); | |
2021 | } | |
9583bc14 EJ |
2022 | } |
2023 | ||
86e2dcdd FL |
2024 | /* Updates multicast snooping table 'ms' given that a packet matching 'flow' |
2025 | * was received on 'in_xbundle' in 'vlan' and is either Report or Query. */ | |
2026 | static void | |
06994f87 TLSC |
2027 | update_mcast_snooping_table4__(const struct xbridge *xbridge, |
2028 | const struct flow *flow, | |
2029 | struct mcast_snooping *ms, int vlan, | |
2030 | struct xbundle *in_xbundle, | |
2031 | const struct dp_packet *packet) | |
86e2dcdd FL |
2032 | OVS_REQ_WRLOCK(ms->rwlock) |
2033 | { | |
2034 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(60, 30); | |
e3102e42 | 2035 | int count; |
06994f87 | 2036 | ovs_be32 ip4 = flow->igmp_group_ip4; |
86e2dcdd FL |
2037 | |
2038 | switch (ntohs(flow->tp_src)) { | |
2039 | case IGMP_HOST_MEMBERSHIP_REPORT: | |
2040 | case IGMPV2_HOST_MEMBERSHIP_REPORT: | |
964a4d5f | 2041 | if (mcast_snooping_add_group4(ms, ip4, vlan, in_xbundle->ofbundle)) { |
86e2dcdd FL |
2042 | VLOG_DBG_RL(&rl, "bridge %s: multicast snooping learned that " |
2043 | IP_FMT" is on port %s in VLAN %d", | |
2044 | xbridge->name, IP_ARGS(ip4), in_xbundle->name, vlan); | |
2045 | } | |
2046 | break; | |
2047 | case IGMP_HOST_LEAVE_MESSAGE: | |
964a4d5f | 2048 | if (mcast_snooping_leave_group4(ms, ip4, vlan, in_xbundle->ofbundle)) { |
86e2dcdd FL |
2049 | VLOG_DBG_RL(&rl, "bridge %s: multicast snooping leaving " |
2050 | IP_FMT" is on port %s in VLAN %d", | |
2051 | xbridge->name, IP_ARGS(ip4), in_xbundle->name, vlan); | |
2052 | } | |
2053 | break; | |
2054 | case IGMP_HOST_MEMBERSHIP_QUERY: | |
2055 | if (flow->nw_src && mcast_snooping_add_mrouter(ms, vlan, | |
2056 | in_xbundle->ofbundle)) { | |
2057 | VLOG_DBG_RL(&rl, "bridge %s: multicast snooping query from " | |
2058 | IP_FMT" is on port %s in VLAN %d", | |
2059 | xbridge->name, IP_ARGS(flow->nw_src), | |
2060 | in_xbundle->name, vlan); | |
2061 | } | |
2062 | break; | |
e3102e42 TLSC |
2063 | case IGMPV3_HOST_MEMBERSHIP_REPORT: |
2064 | if ((count = mcast_snooping_add_report(ms, packet, vlan, | |
2065 | in_xbundle->ofbundle))) { | |
2066 | VLOG_DBG_RL(&rl, "bridge %s: multicast snooping processed %d " | |
2067 | "addresses on port %s in VLAN %d", | |
2068 | xbridge->name, count, in_xbundle->name, vlan); | |
2069 | } | |
2070 | break; | |
86e2dcdd FL |
2071 | } |
2072 | } | |
2073 | ||
06994f87 TLSC |
2074 | static void |
2075 | update_mcast_snooping_table6__(const struct xbridge *xbridge, | |
2076 | const struct flow *flow, | |
2077 | struct mcast_snooping *ms, int vlan, | |
2078 | struct xbundle *in_xbundle, | |
2079 | const struct dp_packet *packet) | |
2080 | OVS_REQ_WRLOCK(ms->rwlock) | |
2081 | { | |
2082 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(60, 30); | |
2083 | int count; | |
2084 | ||
2085 | switch (ntohs(flow->tp_src)) { | |
2086 | case MLD_QUERY: | |
2087 | if (!ipv6_addr_equals(&flow->ipv6_src, &in6addr_any) | |
2088 | && mcast_snooping_add_mrouter(ms, vlan, in_xbundle->ofbundle)) { | |
2089 | VLOG_DBG_RL(&rl, "bridge %s: multicast snooping query on port %s" | |
2090 | "in VLAN %d", | |
2091 | xbridge->name, in_xbundle->name, vlan); | |
2092 | } | |
2093 | break; | |
2094 | case MLD_REPORT: | |
2095 | case MLD_DONE: | |
2096 | case MLD2_REPORT: | |
2097 | count = mcast_snooping_add_mld(ms, packet, vlan, in_xbundle->ofbundle); | |
2098 | if (count) { | |
2099 | VLOG_DBG_RL(&rl, "bridge %s: multicast snooping processed %d " | |
2100 | "addresses on port %s in VLAN %d", | |
2101 | xbridge->name, count, in_xbundle->name, vlan); | |
2102 | } | |
2103 | break; | |
2104 | } | |
2105 | } | |
2106 | ||
86e2dcdd FL |
2107 | /* Updates multicast snooping table 'ms' given that a packet matching 'flow' |
2108 | * was received on 'in_xbundle' in 'vlan'. */ | |
2109 | static void | |
2110 | update_mcast_snooping_table(const struct xbridge *xbridge, | |
2111 | const struct flow *flow, int vlan, | |
e3102e42 TLSC |
2112 | struct xbundle *in_xbundle, |
2113 | const struct dp_packet *packet) | |
86e2dcdd FL |
2114 | { |
2115 | struct mcast_snooping *ms = xbridge->ms; | |
2116 | struct xlate_cfg *xcfg; | |
2117 | struct xbundle *mcast_xbundle; | |
f4ae6e23 | 2118 | struct mcast_port_bundle *fport; |
86e2dcdd FL |
2119 | |
2120 | /* Don't learn the OFPP_NONE port. */ | |
2121 | if (in_xbundle == &ofpp_none_bundle) { | |
2122 | return; | |
2123 | } | |
2124 | ||
2125 | /* Don't learn from flood ports */ | |
2126 | mcast_xbundle = NULL; | |
2127 | ovs_rwlock_wrlock(&ms->rwlock); | |
2128 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
f4ae6e23 | 2129 | LIST_FOR_EACH(fport, node, &ms->fport_list) { |
86e2dcdd FL |
2130 | mcast_xbundle = xbundle_lookup(xcfg, fport->port); |
2131 | if (mcast_xbundle == in_xbundle) { | |
2132 | break; | |
2133 | } | |
2134 | } | |
2135 | ||
2136 | if (!mcast_xbundle || mcast_xbundle != in_xbundle) { | |
06994f87 TLSC |
2137 | if (flow->dl_type == htons(ETH_TYPE_IP)) { |
2138 | update_mcast_snooping_table4__(xbridge, flow, ms, vlan, | |
2139 | in_xbundle, packet); | |
2140 | } else { | |
2141 | update_mcast_snooping_table6__(xbridge, flow, ms, vlan, | |
2142 | in_xbundle, packet); | |
2143 | } | |
86e2dcdd FL |
2144 | } |
2145 | ovs_rwlock_unlock(&ms->rwlock); | |
2146 | } | |
2147 | ||
2148 | /* send the packet to ports having the multicast group learned */ | |
2149 | static void | |
2150 | xlate_normal_mcast_send_group(struct xlate_ctx *ctx, | |
2151 | struct mcast_snooping *ms OVS_UNUSED, | |
2152 | struct mcast_group *grp, | |
2153 | struct xbundle *in_xbundle, uint16_t vlan) | |
2154 | OVS_REQ_RDLOCK(ms->rwlock) | |
2155 | { | |
2156 | struct xlate_cfg *xcfg; | |
2157 | struct mcast_group_bundle *b; | |
2158 | struct xbundle *mcast_xbundle; | |
2159 | ||
2160 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
2161 | LIST_FOR_EACH(b, bundle_node, &grp->bundle_lru) { | |
2162 | mcast_xbundle = xbundle_lookup(xcfg, b->port); | |
2163 | if (mcast_xbundle && mcast_xbundle != in_xbundle) { | |
2164 | xlate_report(ctx, "forwarding to mcast group port"); | |
2165 | output_normal(ctx, mcast_xbundle, vlan); | |
2166 | } else if (!mcast_xbundle) { | |
2167 | xlate_report(ctx, "mcast group port is unknown, dropping"); | |
2168 | } else { | |
2169 | xlate_report(ctx, "mcast group port is input port, dropping"); | |
2170 | } | |
2171 | } | |
2172 | } | |
2173 | ||
2174 | /* send the packet to ports connected to multicast routers */ | |
2175 | static void | |
2176 | xlate_normal_mcast_send_mrouters(struct xlate_ctx *ctx, | |
2177 | struct mcast_snooping *ms, | |
2178 | struct xbundle *in_xbundle, uint16_t vlan) | |
2179 | OVS_REQ_RDLOCK(ms->rwlock) | |
2180 | { | |
2181 | struct xlate_cfg *xcfg; | |
2182 | struct mcast_mrouter_bundle *mrouter; | |
2183 | struct xbundle *mcast_xbundle; | |
2184 | ||
2185 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
2186 | LIST_FOR_EACH(mrouter, mrouter_node, &ms->mrouter_lru) { | |
2187 | mcast_xbundle = xbundle_lookup(xcfg, mrouter->port); | |
2188 | if (mcast_xbundle && mcast_xbundle != in_xbundle) { | |
2189 | xlate_report(ctx, "forwarding to mcast router port"); | |
2190 | output_normal(ctx, mcast_xbundle, vlan); | |
2191 | } else if (!mcast_xbundle) { | |
2192 | xlate_report(ctx, "mcast router port is unknown, dropping"); | |
2193 | } else { | |
2194 | xlate_report(ctx, "mcast router port is input port, dropping"); | |
2195 | } | |
2196 | } | |
2197 | } | |
2198 | ||
2199 | /* send the packet to ports flagged to be flooded */ | |
2200 | static void | |
2201 | xlate_normal_mcast_send_fports(struct xlate_ctx *ctx, | |
2202 | struct mcast_snooping *ms, | |
2203 | struct xbundle *in_xbundle, uint16_t vlan) | |
2204 | OVS_REQ_RDLOCK(ms->rwlock) | |
2205 | { | |
2206 | struct xlate_cfg *xcfg; | |
f4ae6e23 | 2207 | struct mcast_port_bundle *fport; |
86e2dcdd FL |
2208 | struct xbundle *mcast_xbundle; |
2209 | ||
2210 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
f4ae6e23 | 2211 | LIST_FOR_EACH(fport, node, &ms->fport_list) { |
86e2dcdd FL |
2212 | mcast_xbundle = xbundle_lookup(xcfg, fport->port); |
2213 | if (mcast_xbundle && mcast_xbundle != in_xbundle) { | |
2214 | xlate_report(ctx, "forwarding to mcast flood port"); | |
2215 | output_normal(ctx, mcast_xbundle, vlan); | |
2216 | } else if (!mcast_xbundle) { | |
2217 | xlate_report(ctx, "mcast flood port is unknown, dropping"); | |
2218 | } else { | |
2219 | xlate_report(ctx, "mcast flood port is input port, dropping"); | |
2220 | } | |
2221 | } | |
2222 | } | |
2223 | ||
8e04a33f FL |
2224 | /* forward the Reports to configured ports */ |
2225 | static void | |
2226 | xlate_normal_mcast_send_rports(struct xlate_ctx *ctx, | |
2227 | struct mcast_snooping *ms, | |
2228 | struct xbundle *in_xbundle, uint16_t vlan) | |
2229 | OVS_REQ_RDLOCK(ms->rwlock) | |
2230 | { | |
2231 | struct xlate_cfg *xcfg; | |
2232 | struct mcast_port_bundle *rport; | |
2233 | struct xbundle *mcast_xbundle; | |
2234 | ||
2235 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
2236 | LIST_FOR_EACH(rport, node, &ms->rport_list) { | |
2237 | mcast_xbundle = xbundle_lookup(xcfg, rport->port); | |
2238 | if (mcast_xbundle && mcast_xbundle != in_xbundle) { | |
2239 | xlate_report(ctx, "forwarding Report to mcast flagged port"); | |
2240 | output_normal(ctx, mcast_xbundle, vlan); | |
2241 | } else if (!mcast_xbundle) { | |
2242 | xlate_report(ctx, "mcast port is unknown, dropping the Report"); | |
2243 | } else { | |
2244 | xlate_report(ctx, "mcast port is input port, dropping the Report"); | |
2245 | } | |
2246 | } | |
2247 | } | |
2248 | ||
682800a4 FL |
2249 | static void |
2250 | xlate_normal_flood(struct xlate_ctx *ctx, struct xbundle *in_xbundle, | |
2251 | uint16_t vlan) | |
2252 | { | |
2253 | struct xbundle *xbundle; | |
2254 | ||
2255 | LIST_FOR_EACH (xbundle, list_node, &ctx->xbridge->xbundles) { | |
2256 | if (xbundle != in_xbundle | |
2257 | && xbundle_includes_vlan(xbundle, vlan) | |
2258 | && xbundle->floodable | |
2259 | && !xbundle_mirror_out(ctx->xbridge, xbundle)) { | |
2260 | output_normal(ctx, xbundle, vlan); | |
2261 | } | |
2262 | } | |
2031ef97 | 2263 | ctx->nf_output_iface = NF_OUT_FLOOD; |
682800a4 FL |
2264 | } |
2265 | ||
9583bc14 EJ |
2266 | static void |
2267 | xlate_normal(struct xlate_ctx *ctx) | |
2268 | { | |
49a73e0c | 2269 | struct flow_wildcards *wc = ctx->wc; |
33bf9176 | 2270 | struct flow *flow = &ctx->xin->flow; |
46c88433 EJ |
2271 | struct xbundle *in_xbundle; |
2272 | struct xport *in_port; | |
9583bc14 | 2273 | struct mac_entry *mac; |
d6d5bbc9 | 2274 | void *mac_port; |
9583bc14 EJ |
2275 | uint16_t vlan; |
2276 | uint16_t vid; | |
2277 | ||
33bf9176 BP |
2278 | memset(&wc->masks.dl_src, 0xff, sizeof wc->masks.dl_src); |
2279 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); | |
1dd35f8a | 2280 | wc->masks.vlan_tci |= htons(VLAN_VID_MASK | VLAN_CFI); |
9583bc14 | 2281 | |
46c88433 EJ |
2282 | in_xbundle = lookup_input_bundle(ctx->xbridge, flow->in_port.ofp_port, |
2283 | ctx->xin->packet != NULL, &in_port); | |
2284 | if (!in_xbundle) { | |
9583bc14 EJ |
2285 | xlate_report(ctx, "no input bundle, dropping"); |
2286 | return; | |
2287 | } | |
2288 | ||
2289 | /* Drop malformed frames. */ | |
33bf9176 BP |
2290 | if (flow->dl_type == htons(ETH_TYPE_VLAN) && |
2291 | !(flow->vlan_tci & htons(VLAN_CFI))) { | |
9583bc14 EJ |
2292 | if (ctx->xin->packet != NULL) { |
2293 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
2294 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet with partial " | |
2295 | "VLAN tag received on port %s", | |
46c88433 | 2296 | ctx->xbridge->name, in_xbundle->name); |
9583bc14 EJ |
2297 | } |
2298 | xlate_report(ctx, "partial VLAN tag, dropping"); | |
2299 | return; | |
2300 | } | |
2301 | ||
2302 | /* Drop frames on bundles reserved for mirroring. */ | |
46c88433 | 2303 | if (xbundle_mirror_out(ctx->xbridge, in_xbundle)) { |
9583bc14 EJ |
2304 | if (ctx->xin->packet != NULL) { |
2305 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
2306 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet received on port " | |
2307 | "%s, which is reserved exclusively for mirroring", | |
46c88433 | 2308 | ctx->xbridge->name, in_xbundle->name); |
9583bc14 EJ |
2309 | } |
2310 | xlate_report(ctx, "input port is mirror output port, dropping"); | |
2311 | return; | |
2312 | } | |
2313 | ||
2314 | /* Check VLAN. */ | |
33bf9176 | 2315 | vid = vlan_tci_to_vid(flow->vlan_tci); |
46c88433 | 2316 | if (!input_vid_is_valid(vid, in_xbundle, ctx->xin->packet != NULL)) { |
9583bc14 EJ |
2317 | xlate_report(ctx, "disallowed VLAN VID for this input port, dropping"); |
2318 | return; | |
2319 | } | |
46c88433 | 2320 | vlan = input_vid_to_vlan(in_xbundle, vid); |
9583bc14 EJ |
2321 | |
2322 | /* Check other admissibility requirements. */ | |
2323 | if (in_port && !is_admissible(ctx, in_port, vlan)) { | |
2324 | return; | |
2325 | } | |
2326 | ||
2327 | /* Learn source MAC. */ | |
2328 | if (ctx->xin->may_learn) { | |
46c88433 | 2329 | update_learning_table(ctx->xbridge, flow, wc, vlan, in_xbundle); |
9583bc14 | 2330 | } |
b256dc52 JS |
2331 | if (ctx->xin->xcache) { |
2332 | struct xc_entry *entry; | |
2333 | ||
2334 | /* Save enough info to update mac learning table later. */ | |
2335 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_NORMAL); | |
9edf6b48 | 2336 | entry->u.normal.ofproto = ctx->xbridge->ofproto; |
b256dc52 JS |
2337 | entry->u.normal.flow = xmemdup(flow, sizeof *flow); |
2338 | entry->u.normal.vlan = vlan; | |
2339 | } | |
9583bc14 EJ |
2340 | |
2341 | /* Determine output bundle. */ | |
86e2dcdd FL |
2342 | if (mcast_snooping_enabled(ctx->xbridge->ms) |
2343 | && !eth_addr_is_broadcast(flow->dl_dst) | |
2344 | && eth_addr_is_multicast(flow->dl_dst) | |
06994f87 | 2345 | && is_ip_any(flow)) { |
86e2dcdd | 2346 | struct mcast_snooping *ms = ctx->xbridge->ms; |
06994f87 | 2347 | struct mcast_group *grp = NULL; |
86e2dcdd | 2348 | |
06994f87 | 2349 | if (is_igmp(flow)) { |
d29f137b TLSC |
2350 | if (mcast_snooping_is_membership(flow->tp_src) || |
2351 | mcast_snooping_is_query(flow->tp_src)) { | |
2352 | if (ctx->xin->may_learn) { | |
86e2dcdd | 2353 | update_mcast_snooping_table(ctx->xbridge, flow, vlan, |
e3102e42 | 2354 | in_xbundle, ctx->xin->packet); |
d29f137b TLSC |
2355 | } |
2356 | /* | |
2357 | * IGMP packets need to take the slow path, in order to be | |
2358 | * processed for mdb updates. That will prevent expires | |
2359 | * firing off even after hosts have sent reports. | |
2360 | */ | |
2361 | ctx->xout->slow |= SLOW_ACTION; | |
86e2dcdd | 2362 | } |
d6d5bbc9 | 2363 | |
86e2dcdd FL |
2364 | if (mcast_snooping_is_membership(flow->tp_src)) { |
2365 | ovs_rwlock_rdlock(&ms->rwlock); | |
2366 | xlate_normal_mcast_send_mrouters(ctx, ms, in_xbundle, vlan); | |
8e04a33f FL |
2367 | /* RFC4541: section 2.1.1, item 1: A snooping switch should |
2368 | * forward IGMP Membership Reports only to those ports where | |
2369 | * multicast routers are attached. Alternatively stated: a | |
2370 | * snooping switch should not forward IGMP Membership Reports | |
2371 | * to ports on which only hosts are attached. | |
2372 | * An administrative control may be provided to override this | |
2373 | * restriction, allowing the report messages to be flooded to | |
2374 | * other ports. */ | |
2375 | xlate_normal_mcast_send_rports(ctx, ms, in_xbundle, vlan); | |
86e2dcdd FL |
2376 | ovs_rwlock_unlock(&ms->rwlock); |
2377 | } else { | |
2378 | xlate_report(ctx, "multicast traffic, flooding"); | |
2379 | xlate_normal_flood(ctx, in_xbundle, vlan); | |
2380 | } | |
2381 | return; | |
06994f87 TLSC |
2382 | } else if (is_mld(flow)) { |
2383 | ctx->xout->slow |= SLOW_ACTION; | |
2384 | if (ctx->xin->may_learn) { | |
2385 | update_mcast_snooping_table(ctx->xbridge, flow, vlan, | |
2386 | in_xbundle, ctx->xin->packet); | |
2387 | } | |
2388 | if (is_mld_report(flow)) { | |
2389 | ovs_rwlock_rdlock(&ms->rwlock); | |
2390 | xlate_normal_mcast_send_mrouters(ctx, ms, in_xbundle, vlan); | |
2391 | xlate_normal_mcast_send_rports(ctx, ms, in_xbundle, vlan); | |
2392 | ovs_rwlock_unlock(&ms->rwlock); | |
2393 | } else { | |
2394 | xlate_report(ctx, "MLD query, flooding"); | |
2395 | xlate_normal_flood(ctx, in_xbundle, vlan); | |
2396 | } | |
86e2dcdd | 2397 | } else { |
06994f87 TLSC |
2398 | if ((flow->dl_type == htons(ETH_TYPE_IP) |
2399 | && ip_is_local_multicast(flow->nw_dst)) | |
2400 | || (flow->dl_type == htons(ETH_TYPE_IPV6) | |
2401 | && ipv6_is_all_hosts(&flow->ipv6_dst))) { | |
86e2dcdd FL |
2402 | /* RFC4541: section 2.1.2, item 2: Packets with a dst IP |
2403 | * address in the 224.0.0.x range which are not IGMP must | |
2404 | * be forwarded on all ports */ | |
2405 | xlate_report(ctx, "RFC4541: section 2.1.2, item 2, flooding"); | |
2406 | xlate_normal_flood(ctx, in_xbundle, vlan); | |
2407 | return; | |
2408 | } | |
2409 | } | |
2410 | ||
2411 | /* forwarding to group base ports */ | |
2412 | ovs_rwlock_rdlock(&ms->rwlock); | |
06994f87 TLSC |
2413 | if (flow->dl_type == htons(ETH_TYPE_IP)) { |
2414 | grp = mcast_snooping_lookup4(ms, flow->nw_dst, vlan); | |
2415 | } else if (flow->dl_type == htons(ETH_TYPE_IPV6)) { | |
2416 | grp = mcast_snooping_lookup(ms, &flow->ipv6_dst, vlan); | |
2417 | } | |
86e2dcdd FL |
2418 | if (grp) { |
2419 | xlate_normal_mcast_send_group(ctx, ms, grp, in_xbundle, vlan); | |
2420 | xlate_normal_mcast_send_fports(ctx, ms, in_xbundle, vlan); | |
2421 | xlate_normal_mcast_send_mrouters(ctx, ms, in_xbundle, vlan); | |
9583bc14 | 2422 | } else { |
86e2dcdd FL |
2423 | if (mcast_snooping_flood_unreg(ms)) { |
2424 | xlate_report(ctx, "unregistered multicast, flooding"); | |
2425 | xlate_normal_flood(ctx, in_xbundle, vlan); | |
2426 | } else { | |
2427 | xlate_normal_mcast_send_mrouters(ctx, ms, in_xbundle, vlan); | |
2428 | xlate_normal_mcast_send_fports(ctx, ms, in_xbundle, vlan); | |
2429 | } | |
9583bc14 | 2430 | } |
86e2dcdd | 2431 | ovs_rwlock_unlock(&ms->rwlock); |
9583bc14 | 2432 | } else { |
86e2dcdd FL |
2433 | ovs_rwlock_rdlock(&ctx->xbridge->ml->rwlock); |
2434 | mac = mac_learning_lookup(ctx->xbridge->ml, flow->dl_dst, vlan); | |
9d078ec2 | 2435 | mac_port = mac ? mac_entry_get_port(ctx->xbridge->ml, mac) : NULL; |
86e2dcdd FL |
2436 | ovs_rwlock_unlock(&ctx->xbridge->ml->rwlock); |
2437 | ||
2438 | if (mac_port) { | |
2439 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
2440 | struct xbundle *mac_xbundle = xbundle_lookup(xcfg, mac_port); | |
2441 | if (mac_xbundle && mac_xbundle != in_xbundle) { | |
2442 | xlate_report(ctx, "forwarding to learned port"); | |
2443 | output_normal(ctx, mac_xbundle, vlan); | |
2444 | } else if (!mac_xbundle) { | |
2445 | xlate_report(ctx, "learned port is unknown, dropping"); | |
2446 | } else { | |
2447 | xlate_report(ctx, "learned port is input port, dropping"); | |
2448 | } | |
2449 | } else { | |
2450 | xlate_report(ctx, "no learned MAC for destination, flooding"); | |
2451 | xlate_normal_flood(ctx, in_xbundle, vlan); | |
2452 | } | |
9583bc14 EJ |
2453 | } |
2454 | } | |
2455 | ||
a6092018 BP |
2456 | /* Appends a "sample" action for sFlow or IPFIX to 'ctx->odp_actions'. The |
2457 | * 'probability' is the number of packets out of UINT32_MAX to sample. The | |
2458 | * 'cookie' (of length 'cookie_size' bytes) is passed back in the callback for | |
2459 | * each sampled packet. 'tunnel_out_port', if not ODPP_NONE, is added as the | |
2460 | * OVS_USERSPACE_ATTR_EGRESS_TUN_PORT attribute. If 'include_actions', an | |
2461 | * OVS_USERSPACE_ATTR_ACTIONS attribute is added. | |
9583bc14 EJ |
2462 | */ |
2463 | static size_t | |
a6092018 | 2464 | compose_sample_action(struct xlate_ctx *ctx, |
9583bc14 EJ |
2465 | const uint32_t probability, |
2466 | const union user_action_cookie *cookie, | |
8b7ea2d4 | 2467 | const size_t cookie_size, |
7321bda3 NM |
2468 | const odp_port_t tunnel_out_port, |
2469 | bool include_actions) | |
9583bc14 | 2470 | { |
a6092018 BP |
2471 | size_t sample_offset = nl_msg_start_nested(ctx->odp_actions, |
2472 | OVS_ACTION_ATTR_SAMPLE); | |
9583bc14 | 2473 | |
a6092018 | 2474 | nl_msg_put_u32(ctx->odp_actions, OVS_SAMPLE_ATTR_PROBABILITY, probability); |
9583bc14 | 2475 | |
a6092018 BP |
2476 | size_t actions_offset = nl_msg_start_nested(ctx->odp_actions, |
2477 | OVS_SAMPLE_ATTR_ACTIONS); | |
9583bc14 | 2478 | |
a6092018 BP |
2479 | odp_port_t odp_port = ofp_port_to_odp_port( |
2480 | ctx->xbridge, ctx->xin->flow.in_port.ofp_port); | |
2481 | uint32_t pid = dpif_port_get_pid(ctx->xbridge->dpif, odp_port, | |
2482 | flow_hash_5tuple(&ctx->xin->flow, 0)); | |
2483 | int cookie_offset = odp_put_userspace_action(pid, cookie, cookie_size, | |
2484 | tunnel_out_port, | |
2485 | include_actions, | |
2486 | ctx->odp_actions); | |
89a8a7f0 | 2487 | |
a6092018 BP |
2488 | nl_msg_end_nested(ctx->odp_actions, actions_offset); |
2489 | nl_msg_end_nested(ctx->odp_actions, sample_offset); | |
9583bc14 | 2490 | |
9583bc14 EJ |
2491 | return cookie_offset; |
2492 | } | |
2493 | ||
a6092018 BP |
2494 | /* If sFLow is not enabled, returns 0 without doing anything. |
2495 | * | |
2496 | * If sFlow is enabled, appends a template "sample" action to the ODP actions | |
2497 | * in 'ctx'. This action is a template because some of the information needed | |
2498 | * to fill it out is not available until flow translation is complete. In this | |
2499 | * case, this functions returns an offset, which is always nonzero, to pass | |
2500 | * later to fix_sflow_action() to fill in the rest of the template. */ | |
9583bc14 | 2501 | static size_t |
a6092018 | 2502 | compose_sflow_action(struct xlate_ctx *ctx) |
9583bc14 | 2503 | { |
a6092018 BP |
2504 | struct dpif_sflow *sflow = ctx->xbridge->sflow; |
2505 | if (!sflow || ctx->xin->flow.in_port.ofp_port == OFPP_NONE) { | |
9583bc14 EJ |
2506 | return 0; |
2507 | } | |
2508 | ||
a6092018 BP |
2509 | union user_action_cookie cookie = { .type = USER_ACTION_COOKIE_SFLOW }; |
2510 | return compose_sample_action(ctx, dpif_sflow_get_probability(sflow), | |
7321bda3 NM |
2511 | &cookie, sizeof cookie.sflow, ODPP_NONE, |
2512 | true); | |
9583bc14 EJ |
2513 | } |
2514 | ||
a6092018 BP |
2515 | /* If IPFIX is enabled, this appends a "sample" action to implement IPFIX to |
2516 | * 'ctx->odp_actions'. */ | |
9583bc14 | 2517 | static void |
a6092018 | 2518 | compose_ipfix_action(struct xlate_ctx *ctx, odp_port_t output_odp_port) |
9583bc14 | 2519 | { |
a6092018 | 2520 | struct dpif_ipfix *ipfix = ctx->xbridge->ipfix; |
8b7ea2d4 | 2521 | odp_port_t tunnel_out_port = ODPP_NONE; |
9583bc14 | 2522 | |
a6092018 | 2523 | if (!ipfix || ctx->xin->flow.in_port.ofp_port == OFPP_NONE) { |
9583bc14 EJ |
2524 | return; |
2525 | } | |
2526 | ||
8b7ea2d4 WZ |
2527 | /* For input case, output_odp_port is ODPP_NONE, which is an invalid port |
2528 | * number. */ | |
2529 | if (output_odp_port == ODPP_NONE && | |
a6092018 | 2530 | !dpif_ipfix_get_bridge_exporter_input_sampling(ipfix)) { |
8b7ea2d4 WZ |
2531 | return; |
2532 | } | |
2533 | ||
2534 | /* For output case, output_odp_port is valid*/ | |
2535 | if (output_odp_port != ODPP_NONE) { | |
a6092018 | 2536 | if (!dpif_ipfix_get_bridge_exporter_output_sampling(ipfix)) { |
8b7ea2d4 WZ |
2537 | return; |
2538 | } | |
2539 | /* If tunnel sampling is enabled, put an additional option attribute: | |
2540 | * OVS_USERSPACE_ATTR_TUNNEL_OUT_PORT | |
2541 | */ | |
a6092018 BP |
2542 | if (dpif_ipfix_get_bridge_exporter_tunnel_sampling(ipfix) && |
2543 | dpif_ipfix_get_tunnel_port(ipfix, output_odp_port) ) { | |
8b7ea2d4 WZ |
2544 | tunnel_out_port = output_odp_port; |
2545 | } | |
2546 | } | |
2547 | ||
a6092018 BP |
2548 | union user_action_cookie cookie = { |
2549 | .ipfix = { | |
2550 | .type = USER_ACTION_COOKIE_IPFIX, | |
2551 | .output_odp_port = output_odp_port, | |
2552 | } | |
2553 | }; | |
2554 | compose_sample_action(ctx, | |
2555 | dpif_ipfix_get_bridge_exporter_probability(ipfix), | |
7321bda3 NM |
2556 | &cookie, sizeof cookie.ipfix, tunnel_out_port, |
2557 | false); | |
9583bc14 EJ |
2558 | } |
2559 | ||
a6092018 BP |
2560 | /* Fix "sample" action according to data collected while composing ODP actions, |
2561 | * as described in compose_sflow_action(). | |
2562 | * | |
2563 | * 'user_cookie_offset' must be the offset returned by add_sflow_action(). */ | |
9583bc14 | 2564 | static void |
a6092018 | 2565 | fix_sflow_action(struct xlate_ctx *ctx, unsigned int user_cookie_offset) |
9583bc14 EJ |
2566 | { |
2567 | const struct flow *base = &ctx->base_flow; | |
2568 | union user_action_cookie *cookie; | |
2569 | ||
a6092018 | 2570 | cookie = ofpbuf_at(ctx->odp_actions, user_cookie_offset, |
9583bc14 EJ |
2571 | sizeof cookie->sflow); |
2572 | ovs_assert(cookie->type == USER_ACTION_COOKIE_SFLOW); | |
2573 | ||
a6092018 BP |
2574 | cookie->type = USER_ACTION_COOKIE_SFLOW; |
2575 | cookie->sflow.vlan_tci = base->vlan_tci; | |
2576 | ||
2577 | /* See http://www.sflow.org/sflow_version_5.txt (search for "Input/output | |
2578 | * port information") for the interpretation of cookie->output. */ | |
2579 | switch (ctx->sflow_n_outputs) { | |
2580 | case 0: | |
2581 | /* 0x40000000 | 256 means "packet dropped for unknown reason". */ | |
2582 | cookie->sflow.output = 0x40000000 | 256; | |
2583 | break; | |
2584 | ||
2585 | case 1: | |
2586 | cookie->sflow.output = dpif_sflow_odp_port_to_ifindex( | |
2587 | ctx->xbridge->sflow, ctx->sflow_odp_port); | |
2588 | if (cookie->sflow.output) { | |
2589 | break; | |
2590 | } | |
2591 | /* Fall through. */ | |
2592 | default: | |
2593 | /* 0x80000000 means "multiple output ports. */ | |
2594 | cookie->sflow.output = 0x80000000 | ctx->sflow_n_outputs; | |
2595 | break; | |
2596 | } | |
9583bc14 EJ |
2597 | } |
2598 | ||
515793d5 BP |
2599 | static bool |
2600 | process_special(struct xlate_ctx *ctx, const struct xport *xport) | |
db7d4e46 | 2601 | { |
515793d5 | 2602 | const struct flow *flow = &ctx->xin->flow; |
49a73e0c | 2603 | struct flow_wildcards *wc = ctx->wc; |
46c88433 | 2604 | const struct xbridge *xbridge = ctx->xbridge; |
515793d5 BP |
2605 | const struct dp_packet *packet = ctx->xin->packet; |
2606 | enum slow_path_reason slow; | |
642dc74d | 2607 | |
46c88433 | 2608 | if (!xport) { |
515793d5 | 2609 | slow = 0; |
46c88433 | 2610 | } else if (xport->cfm && cfm_should_process_flow(xport->cfm, flow, wc)) { |
db7d4e46 | 2611 | if (packet) { |
46c88433 | 2612 | cfm_process_heartbeat(xport->cfm, packet); |
db7d4e46 | 2613 | } |
515793d5 | 2614 | slow = SLOW_CFM; |
fab52e16 | 2615 | } else if (xport->bfd && bfd_should_process_flow(xport->bfd, flow, wc)) { |
db7d4e46 | 2616 | if (packet) { |
46c88433 | 2617 | bfd_process_packet(xport->bfd, flow, packet); |
60d02c72 AW |
2618 | /* If POLL received, immediately sends FINAL back. */ |
2619 | if (bfd_should_send_packet(xport->bfd)) { | |
6d308b28 | 2620 | ofproto_dpif_monitor_port_send_soon(xport->ofport); |
60d02c72 | 2621 | } |
db7d4e46 | 2622 | } |
515793d5 | 2623 | slow = SLOW_BFD; |
46c88433 | 2624 | } else if (xport->xbundle && xport->xbundle->lacp |
db7d4e46 JP |
2625 | && flow->dl_type == htons(ETH_TYPE_LACP)) { |
2626 | if (packet) { | |
46c88433 | 2627 | lacp_process_packet(xport->xbundle->lacp, xport->ofport, packet); |
db7d4e46 | 2628 | } |
515793d5 | 2629 | slow = SLOW_LACP; |
9efd308e DV |
2630 | } else if ((xbridge->stp || xbridge->rstp) && |
2631 | stp_should_process_flow(flow, wc)) { | |
db7d4e46 | 2632 | if (packet) { |
f025bcb7 JR |
2633 | xbridge->stp |
2634 | ? stp_process_packet(xport, packet) | |
2635 | : rstp_process_packet(xport, packet); | |
db7d4e46 | 2636 | } |
515793d5 | 2637 | slow = SLOW_STP; |
19aef6ef | 2638 | } else if (xport->lldp && lldp_should_process_flow(xport->lldp, flow)) { |
0477baa9 DF |
2639 | if (packet) { |
2640 | lldp_process_packet(xport->lldp, packet); | |
2641 | } | |
515793d5 | 2642 | slow = SLOW_LLDP; |
db7d4e46 | 2643 | } else { |
515793d5 BP |
2644 | slow = 0; |
2645 | } | |
2646 | ||
2647 | if (slow) { | |
2648 | ctx->xout->slow |= slow; | |
2649 | return true; | |
2650 | } else { | |
2651 | return false; | |
db7d4e46 JP |
2652 | } |
2653 | } | |
2654 | ||
a36de779 PS |
2655 | static int |
2656 | tnl_route_lookup_flow(const struct flow *oflow, | |
2657 | ovs_be32 *ip, struct xport **out_port) | |
2658 | { | |
2659 | char out_dev[IFNAMSIZ]; | |
2660 | struct xbridge *xbridge; | |
2661 | struct xlate_cfg *xcfg; | |
2662 | ovs_be32 gw; | |
2663 | ||
2664 | if (!ovs_router_lookup(oflow->tunnel.ip_dst, out_dev, &gw)) { | |
2665 | return -ENOENT; | |
2666 | } | |
2667 | ||
2668 | if (gw) { | |
2669 | *ip = gw; | |
2670 | } else { | |
2671 | *ip = oflow->tunnel.ip_dst; | |
2672 | } | |
2673 | ||
2674 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
2675 | ovs_assert(xcfg); | |
2676 | ||
2677 | HMAP_FOR_EACH (xbridge, hmap_node, &xcfg->xbridges) { | |
2678 | if (!strncmp(xbridge->name, out_dev, IFNAMSIZ)) { | |
2679 | struct xport *port; | |
2680 | ||
2681 | HMAP_FOR_EACH (port, ofp_node, &xbridge->xports) { | |
2682 | if (!strncmp(netdev_get_name(port->netdev), out_dev, IFNAMSIZ)) { | |
2683 | *out_port = port; | |
2684 | return 0; | |
2685 | } | |
2686 | } | |
2687 | } | |
2688 | } | |
2689 | return -ENOENT; | |
2690 | } | |
2691 | ||
2692 | static int | |
cdd42eda JG |
2693 | compose_table_xlate(struct xlate_ctx *ctx, const struct xport *out_dev, |
2694 | struct dp_packet *packet) | |
a36de779 | 2695 | { |
cdd42eda | 2696 | struct xbridge *xbridge = out_dev->xbridge; |
a36de779 PS |
2697 | struct ofpact_output output; |
2698 | struct flow flow; | |
2699 | ||
2700 | ofpact_init(&output.ofpact, OFPACT_OUTPUT, sizeof output); | |
cf62fa4c | 2701 | flow_extract(packet, &flow); |
cdd42eda JG |
2702 | flow.in_port.ofp_port = out_dev->ofp_port; |
2703 | output.port = OFPP_TABLE; | |
a36de779 PS |
2704 | output.max_len = 0; |
2705 | ||
cdd42eda JG |
2706 | return ofproto_dpif_execute_actions__(xbridge->ofproto, &flow, NULL, |
2707 | &output.ofpact, sizeof output, | |
2708 | ctx->recurse, ctx->resubmits, packet); | |
a36de779 PS |
2709 | } |
2710 | ||
2711 | static void | |
cdd42eda | 2712 | tnl_send_arp_request(struct xlate_ctx *ctx, const struct xport *out_dev, |
74ff3298 | 2713 | const struct eth_addr eth_src, |
a36de779 PS |
2714 | ovs_be32 ip_src, ovs_be32 ip_dst) |
2715 | { | |
cf62fa4c | 2716 | struct dp_packet packet; |
a36de779 | 2717 | |
cf62fa4c | 2718 | dp_packet_init(&packet, 0); |
eb0b295e BP |
2719 | compose_arp(&packet, ARP_OP_REQUEST, |
2720 | eth_src, eth_addr_zero, true, ip_src, ip_dst); | |
a36de779 | 2721 | |
cdd42eda | 2722 | compose_table_xlate(ctx, out_dev, &packet); |
cf62fa4c | 2723 | dp_packet_uninit(&packet); |
a36de779 PS |
2724 | } |
2725 | ||
2726 | static int | |
81de18ec | 2727 | build_tunnel_send(struct xlate_ctx *ctx, const struct xport *xport, |
a36de779 PS |
2728 | const struct flow *flow, odp_port_t tunnel_odp_port) |
2729 | { | |
2730 | struct ovs_action_push_tnl tnl_push_data; | |
2731 | struct xport *out_dev = NULL; | |
2732 | ovs_be32 s_ip, d_ip = 0; | |
74ff3298 JR |
2733 | struct eth_addr smac; |
2734 | struct eth_addr dmac; | |
a36de779 PS |
2735 | int err; |
2736 | ||
2737 | err = tnl_route_lookup_flow(flow, &d_ip, &out_dev); | |
2738 | if (err) { | |
81de18ec | 2739 | xlate_report(ctx, "native tunnel routing failed"); |
a36de779 PS |
2740 | return err; |
2741 | } | |
81de18ec BP |
2742 | xlate_report(ctx, "tunneling to "IP_FMT" via %s", |
2743 | IP_ARGS(d_ip), netdev_get_name(out_dev->netdev)); | |
a36de779 PS |
2744 | |
2745 | /* Use mac addr of bridge port of the peer. */ | |
74ff3298 | 2746 | err = netdev_get_etheraddr(out_dev->netdev, &smac); |
a36de779 | 2747 | if (err) { |
81de18ec | 2748 | xlate_report(ctx, "tunnel output device lacks Ethernet address"); |
a36de779 PS |
2749 | return err; |
2750 | } | |
2751 | ||
2752 | err = netdev_get_in4(out_dev->netdev, (struct in_addr *) &s_ip, NULL); | |
2753 | if (err) { | |
81de18ec | 2754 | xlate_report(ctx, "tunnel output device lacks IPv4 address"); |
a36de779 PS |
2755 | return err; |
2756 | } | |
2757 | ||
74ff3298 | 2758 | err = tnl_arp_lookup(out_dev->xbridge->name, d_ip, &dmac); |
a36de779 | 2759 | if (err) { |
81de18ec BP |
2760 | xlate_report(ctx, "ARP cache miss for "IP_FMT" on bridge %s, " |
2761 | "sending ARP request", | |
2762 | IP_ARGS(d_ip), out_dev->xbridge->name); | |
cdd42eda | 2763 | tnl_send_arp_request(ctx, out_dev, smac, s_ip, d_ip); |
a36de779 PS |
2764 | return err; |
2765 | } | |
2766 | if (ctx->xin->xcache) { | |
2767 | struct xc_entry *entry; | |
2768 | ||
2769 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_TNL_ARP); | |
8742957c BP |
2770 | ovs_strlcpy(entry->u.tnl_arp_cache.br_name, out_dev->xbridge->name, |
2771 | sizeof entry->u.tnl_arp_cache.br_name); | |
a36de779 PS |
2772 | entry->u.tnl_arp_cache.d_ip = d_ip; |
2773 | } | |
81de18ec BP |
2774 | |
2775 | xlate_report(ctx, "tunneling from "ETH_ADDR_FMT" "IP_FMT | |
2776 | " to "ETH_ADDR_FMT" "IP_FMT, | |
2777 | ETH_ADDR_ARGS(smac), IP_ARGS(s_ip), | |
2778 | ETH_ADDR_ARGS(dmac), IP_ARGS(d_ip)); | |
a36de779 PS |
2779 | err = tnl_port_build_header(xport->ofport, flow, |
2780 | dmac, smac, s_ip, &tnl_push_data); | |
2781 | if (err) { | |
2782 | return err; | |
2783 | } | |
2784 | tnl_push_data.tnl_port = odp_to_u32(tunnel_odp_port); | |
2785 | tnl_push_data.out_port = odp_to_u32(out_dev->odp_port); | |
1520ef4f | 2786 | odp_put_tnl_push_action(ctx->odp_actions, &tnl_push_data); |
a36de779 PS |
2787 | return 0; |
2788 | } | |
2789 | ||
704bb0bf JS |
2790 | static void |
2791 | xlate_commit_actions(struct xlate_ctx *ctx) | |
2792 | { | |
2793 | bool use_masked = ctx->xbridge->support.masked_set_action; | |
2794 | ||
2795 | ctx->xout->slow |= commit_odp_actions(&ctx->xin->flow, &ctx->base_flow, | |
2796 | ctx->odp_actions, ctx->wc, | |
2797 | use_masked); | |
2798 | } | |
2799 | ||
9583bc14 | 2800 | static void |
4e022ec0 | 2801 | compose_output_action__(struct xlate_ctx *ctx, ofp_port_t ofp_port, |
e93ef1c7 | 2802 | const struct xlate_bond_recirc *xr, bool check_stp) |
9583bc14 | 2803 | { |
46c88433 | 2804 | const struct xport *xport = get_ofp_port(ctx->xbridge, ofp_port); |
49a73e0c | 2805 | struct flow_wildcards *wc = ctx->wc; |
33bf9176 | 2806 | struct flow *flow = &ctx->xin->flow; |
a36de779 | 2807 | struct flow_tnl flow_tnl; |
9583bc14 | 2808 | ovs_be16 flow_vlan_tci; |
1362e248 | 2809 | uint32_t flow_pkt_mark; |
9583bc14 | 2810 | uint8_t flow_nw_tos; |
4e022ec0 | 2811 | odp_port_t out_port, odp_port; |
a36de779 | 2812 | bool tnl_push_pop_send = false; |
ca077186 | 2813 | uint8_t dscp; |
9583bc14 EJ |
2814 | |
2815 | /* If 'struct flow' gets additional metadata, we'll need to zero it out | |
2816 | * before traversing a patch port. */ | |
b666962b | 2817 | BUILD_ASSERT_DECL(FLOW_WC_SEQ == 33); |
a36de779 | 2818 | memset(&flow_tnl, 0, sizeof flow_tnl); |
9583bc14 | 2819 | |
46c88433 | 2820 | if (!xport) { |
9583bc14 EJ |
2821 | xlate_report(ctx, "Nonexistent output port"); |
2822 | return; | |
46c88433 | 2823 | } else if (xport->config & OFPUTIL_PC_NO_FWD) { |
9583bc14 EJ |
2824 | xlate_report(ctx, "OFPPC_NO_FWD set, skipping output"); |
2825 | return; | |
0d1cee12 | 2826 | } else if (check_stp) { |
bbbca389 | 2827 | if (is_stp(&ctx->base_flow)) { |
9efd308e DV |
2828 | if (!xport_stp_should_forward_bpdu(xport) && |
2829 | !xport_rstp_should_manage_bpdu(xport)) { | |
2830 | if (ctx->xbridge->stp != NULL) { | |
2831 | xlate_report(ctx, "STP not in listening state, " | |
2832 | "skipping bpdu output"); | |
2833 | } else if (ctx->xbridge->rstp != NULL) { | |
2834 | xlate_report(ctx, "RSTP not managing BPDU in this state, " | |
2835 | "skipping bpdu output"); | |
2836 | } | |
0d1cee12 K |
2837 | return; |
2838 | } | |
9efd308e DV |
2839 | } else if (!xport_stp_forward_state(xport) || |
2840 | !xport_rstp_forward_state(xport)) { | |
2841 | if (ctx->xbridge->stp != NULL) { | |
2842 | xlate_report(ctx, "STP not in forwarding state, " | |
2843 | "skipping output"); | |
2844 | } else if (ctx->xbridge->rstp != NULL) { | |
2845 | xlate_report(ctx, "RSTP not in forwarding state, " | |
2846 | "skipping output"); | |
2847 | } | |
0d1cee12 K |
2848 | return; |
2849 | } | |
9583bc14 EJ |
2850 | } |
2851 | ||
46c88433 EJ |
2852 | if (xport->peer) { |
2853 | const struct xport *peer = xport->peer; | |
9583bc14 | 2854 | struct flow old_flow = ctx->xin->flow; |
7f5fe537 | 2855 | bool old_was_mpls = ctx->was_mpls; |
18721c4a | 2856 | cls_version_t old_version = ctx->tables_version; |
1774d762 JR |
2857 | struct ofpbuf old_stack = ctx->stack; |
2858 | union mf_subvalue new_stack[1024 / sizeof(union mf_subvalue)]; | |
ed9c9e3e JR |
2859 | struct ofpbuf old_action_set = ctx->action_set; |
2860 | uint64_t actset_stub[1024 / 8]; | |
9583bc14 | 2861 | |
1774d762 | 2862 | ofpbuf_use_stub(&ctx->stack, new_stack, sizeof new_stack); |
ed9c9e3e | 2863 | ofpbuf_use_stub(&ctx->action_set, actset_stub, sizeof actset_stub); |
46c88433 EJ |
2864 | ctx->xbridge = peer->xbridge; |
2865 | flow->in_port.ofp_port = peer->ofp_port; | |
33bf9176 BP |
2866 | flow->metadata = htonll(0); |
2867 | memset(&flow->tunnel, 0, sizeof flow->tunnel); | |
2868 | memset(flow->regs, 0, sizeof flow->regs); | |
c61f3870 | 2869 | flow->actset_output = OFPP_UNSET; |
9583bc14 | 2870 | |
621b8064 JR |
2871 | /* The bridge is now known so obtain its table version. */ |
2872 | ctx->tables_version | |
2873 | = ofproto_dpif_get_tables_version(ctx->xbridge->ofproto); | |
2874 | ||
515793d5 | 2875 | if (!process_special(ctx, peer) && may_receive(peer, ctx)) { |
9efd308e | 2876 | if (xport_stp_forward_state(peer) && xport_rstp_forward_state(peer)) { |
e672ff9b | 2877 | xlate_table_action(ctx, flow->in_port.ofp_port, 0, true, true); |
ed9c9e3e | 2878 | if (ctx->action_set.size) { |
e672ff9b JR |
2879 | /* Translate action set only if not dropping the packet and |
2880 | * not recirculating. */ | |
2881 | if (!exit_recirculates(ctx)) { | |
2882 | xlate_action_set(ctx); | |
2883 | } | |
2884 | } | |
2885 | /* Check if need to recirculate. */ | |
2886 | if (exit_recirculates(ctx)) { | |
2887 | compose_recirculate_action(ctx); | |
ed9c9e3e | 2888 | } |
9583bc14 | 2889 | } else { |
9efd308e DV |
2890 | /* Forwarding is disabled by STP and RSTP. Let OFPP_NORMAL and |
2891 | * the learning action look at the packet, then drop it. */ | |
9583bc14 | 2892 | struct flow old_base_flow = ctx->base_flow; |
1520ef4f | 2893 | size_t old_size = ctx->odp_actions->size; |
3d6151f3 | 2894 | mirror_mask_t old_mirrors = ctx->mirrors; |
f3d5b473 | 2895 | |
e672ff9b | 2896 | xlate_table_action(ctx, flow->in_port.ofp_port, 0, true, true); |
3d6151f3 | 2897 | ctx->mirrors = old_mirrors; |
9583bc14 | 2898 | ctx->base_flow = old_base_flow; |
1520ef4f | 2899 | ctx->odp_actions->size = old_size; |
e672ff9b JR |
2900 | |
2901 | /* Undo changes that may have been done for recirculation. */ | |
2902 | if (exit_recirculates(ctx)) { | |
2903 | ctx->action_set.size = ctx->recirc_action_offset; | |
2904 | ctx->recirc_action_offset = -1; | |
2905 | ctx->last_unroll_offset = -1; | |
2906 | } | |
9583bc14 EJ |
2907 | } |
2908 | } | |
2909 | ||
2910 | ctx->xin->flow = old_flow; | |
832554e3 | 2911 | ctx->xbridge = xport->xbridge; |
ed9c9e3e JR |
2912 | ofpbuf_uninit(&ctx->action_set); |
2913 | ctx->action_set = old_action_set; | |
1774d762 JR |
2914 | ofpbuf_uninit(&ctx->stack); |
2915 | ctx->stack = old_stack; | |
9583bc14 | 2916 | |
621b8064 JR |
2917 | /* Restore calling bridge's lookup version. */ |
2918 | ctx->tables_version = old_version; | |
2919 | ||
7f5fe537 JR |
2920 | /* The peer bridge popping MPLS should have no effect on the original |
2921 | * bridge. */ | |
2922 | ctx->was_mpls = old_was_mpls; | |
2923 | ||
f3d5b473 JR |
2924 | /* The fact that the peer bridge exits (for any reason) does not mean |
2925 | * that the original bridge should exit. Specifically, if the peer | |
2926 | * bridge recirculates (which typically modifies the packet), the | |
2927 | * original bridge must continue processing with the original, not the | |
2928 | * recirculated packet! */ | |
2929 | ctx->exit = false; | |
2930 | ||
9583bc14 | 2931 | if (ctx->xin->resubmit_stats) { |
46c88433 EJ |
2932 | netdev_vport_inc_tx(xport->netdev, ctx->xin->resubmit_stats); |
2933 | netdev_vport_inc_rx(peer->netdev, ctx->xin->resubmit_stats); | |
a1aeea86 AW |
2934 | if (peer->bfd) { |
2935 | bfd_account_rx(peer->bfd, ctx->xin->resubmit_stats); | |
2936 | } | |
9583bc14 | 2937 | } |
b256dc52 JS |
2938 | if (ctx->xin->xcache) { |
2939 | struct xc_entry *entry; | |
2940 | ||
2941 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_NETDEV); | |
2942 | entry->u.dev.tx = netdev_ref(xport->netdev); | |
2943 | entry->u.dev.rx = netdev_ref(peer->netdev); | |
2944 | entry->u.dev.bfd = bfd_ref(peer->bfd); | |
2945 | } | |
9583bc14 EJ |
2946 | return; |
2947 | } | |
2948 | ||
33bf9176 | 2949 | flow_vlan_tci = flow->vlan_tci; |
1362e248 | 2950 | flow_pkt_mark = flow->pkt_mark; |
33bf9176 | 2951 | flow_nw_tos = flow->nw_tos; |
9583bc14 | 2952 | |
16194afd DDP |
2953 | if (count_skb_priorities(xport)) { |
2954 | memset(&wc->masks.skb_priority, 0xff, sizeof wc->masks.skb_priority); | |
2955 | if (dscp_from_skb_priority(xport, flow->skb_priority, &dscp)) { | |
2956 | wc->masks.nw_tos |= IP_DSCP_MASK; | |
2957 | flow->nw_tos &= ~IP_DSCP_MASK; | |
2958 | flow->nw_tos |= dscp; | |
2959 | } | |
9583bc14 EJ |
2960 | } |
2961 | ||
46c88433 | 2962 | if (xport->is_tunnel) { |
9583bc14 EJ |
2963 | /* Save tunnel metadata so that changes made due to |
2964 | * the Logical (tunnel) Port are not visible for any further | |
2965 | * matches, while explicit set actions on tunnel metadata are. | |
2966 | */ | |
a36de779 | 2967 | flow_tnl = flow->tunnel; |
49a73e0c | 2968 | odp_port = tnl_port_send(xport->ofport, flow, ctx->wc); |
4e022ec0 | 2969 | if (odp_port == ODPP_NONE) { |
9583bc14 EJ |
2970 | xlate_report(ctx, "Tunneling decided against output"); |
2971 | goto out; /* restore flow_nw_tos */ | |
2972 | } | |
33bf9176 | 2973 | if (flow->tunnel.ip_dst == ctx->orig_tunnel_ip_dst) { |
9583bc14 EJ |
2974 | xlate_report(ctx, "Not tunneling to our own address"); |
2975 | goto out; /* restore flow_nw_tos */ | |
2976 | } | |
2977 | if (ctx->xin->resubmit_stats) { | |
46c88433 | 2978 | netdev_vport_inc_tx(xport->netdev, ctx->xin->resubmit_stats); |
9583bc14 | 2979 | } |
b256dc52 JS |
2980 | if (ctx->xin->xcache) { |
2981 | struct xc_entry *entry; | |
2982 | ||
2983 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_NETDEV); | |
2984 | entry->u.dev.tx = netdev_ref(xport->netdev); | |
2985 | } | |
9583bc14 | 2986 | out_port = odp_port; |
a36de779 | 2987 | if (ovs_native_tunneling_is_on(ctx->xbridge->ofproto)) { |
81de18ec | 2988 | xlate_report(ctx, "output to native tunnel"); |
a36de779 PS |
2989 | tnl_push_pop_send = true; |
2990 | } else { | |
81de18ec | 2991 | xlate_report(ctx, "output to kernel tunnel"); |
1520ef4f | 2992 | commit_odp_tunnel_action(flow, &ctx->base_flow, ctx->odp_actions); |
a36de779 PS |
2993 | flow->tunnel = flow_tnl; /* Restore tunnel metadata */ |
2994 | } | |
9583bc14 | 2995 | } else { |
46c88433 | 2996 | odp_port = xport->odp_port; |
7614e5d0 | 2997 | out_port = odp_port; |
46c88433 | 2998 | if (ofproto_has_vlan_splinters(ctx->xbridge->ofproto)) { |
7614e5d0 JR |
2999 | ofp_port_t vlandev_port; |
3000 | ||
1dd35f8a | 3001 | wc->masks.vlan_tci |= htons(VLAN_VID_MASK | VLAN_CFI); |
7614e5d0 JR |
3002 | vlandev_port = vsp_realdev_to_vlandev(ctx->xbridge->ofproto, |
3003 | ofp_port, flow->vlan_tci); | |
3004 | if (vlandev_port != ofp_port) { | |
3005 | out_port = ofp_port_to_odp_port(ctx->xbridge, vlandev_port); | |
3006 | flow->vlan_tci = htons(0); | |
3007 | } | |
9583bc14 | 3008 | } |
9583bc14 | 3009 | } |
9583bc14 | 3010 | |
4e022ec0 | 3011 | if (out_port != ODPP_NONE) { |
704bb0bf | 3012 | xlate_commit_actions(ctx); |
adcf00ba | 3013 | |
e93ef1c7 | 3014 | if (xr) { |
347bf289 | 3015 | struct ovs_action_hash *act_hash; |
adcf00ba | 3016 | |
347bf289 | 3017 | /* Hash action. */ |
1520ef4f | 3018 | act_hash = nl_msg_put_unspec_uninit(ctx->odp_actions, |
347bf289 AZ |
3019 | OVS_ACTION_ATTR_HASH, |
3020 | sizeof *act_hash); | |
3021 | act_hash->hash_alg = xr->hash_alg; | |
62ac1f20 | 3022 | act_hash->hash_basis = xr->hash_basis; |
347bf289 AZ |
3023 | |
3024 | /* Recirc action. */ | |
1520ef4f | 3025 | nl_msg_put_u32(ctx->odp_actions, OVS_ACTION_ATTR_RECIRC, |
347bf289 | 3026 | xr->recirc_id); |
adcf00ba | 3027 | } else { |
a36de779 PS |
3028 | |
3029 | if (tnl_push_pop_send) { | |
3030 | build_tunnel_send(ctx, xport, flow, odp_port); | |
3031 | flow->tunnel = flow_tnl; /* Restore tunnel metadata */ | |
3032 | } else { | |
3033 | odp_port_t odp_tnl_port = ODPP_NONE; | |
3034 | ||
3035 | /* XXX: Write better Filter for tunnel port. We can use inport | |
3036 | * int tunnel-port flow to avoid these checks completely. */ | |
3037 | if (ofp_port == OFPP_LOCAL && | |
3038 | ovs_native_tunneling_is_on(ctx->xbridge->ofproto)) { | |
3039 | ||
3040 | odp_tnl_port = tnl_port_map_lookup(flow, wc); | |
3041 | } | |
3042 | ||
3043 | if (odp_tnl_port != ODPP_NONE) { | |
1520ef4f | 3044 | nl_msg_put_odp_port(ctx->odp_actions, |
a36de779 PS |
3045 | OVS_ACTION_ATTR_TUNNEL_POP, |
3046 | odp_tnl_port); | |
3047 | } else { | |
3048 | /* Tunnel push-pop action is not compatible with | |
3049 | * IPFIX action. */ | |
a6092018 | 3050 | compose_ipfix_action(ctx, out_port); |
1520ef4f | 3051 | nl_msg_put_odp_port(ctx->odp_actions, |
a36de779 PS |
3052 | OVS_ACTION_ATTR_OUTPUT, |
3053 | out_port); | |
3054 | } | |
3055 | } | |
adcf00ba | 3056 | } |
9583bc14 | 3057 | |
6cbbf4fa EJ |
3058 | ctx->sflow_odp_port = odp_port; |
3059 | ctx->sflow_n_outputs++; | |
2031ef97 | 3060 | ctx->nf_output_iface = ofp_port; |
6cbbf4fa EJ |
3061 | } |
3062 | ||
7efbc3b7 BP |
3063 | if (mbridge_has_mirrors(ctx->xbridge->mbridge) && xport->xbundle) { |
3064 | mirror_packet(ctx, xport->xbundle, | |
3065 | xbundle_mirror_dst(xport->xbundle->xbridge, | |
3066 | xport->xbundle)); | |
3067 | } | |
3068 | ||
6cbbf4fa | 3069 | out: |
9583bc14 | 3070 | /* Restore flow */ |
33bf9176 | 3071 | flow->vlan_tci = flow_vlan_tci; |
1362e248 | 3072 | flow->pkt_mark = flow_pkt_mark; |
33bf9176 | 3073 | flow->nw_tos = flow_nw_tos; |
9583bc14 EJ |
3074 | } |
3075 | ||
3076 | static void | |
e93ef1c7 JR |
3077 | compose_output_action(struct xlate_ctx *ctx, ofp_port_t ofp_port, |
3078 | const struct xlate_bond_recirc *xr) | |
9583bc14 | 3079 | { |
e93ef1c7 | 3080 | compose_output_action__(ctx, ofp_port, xr, true); |
9583bc14 EJ |
3081 | } |
3082 | ||
bb61b33d BP |
3083 | static void |
3084 | xlate_recursively(struct xlate_ctx *ctx, struct rule_dpif *rule) | |
bb61b33d BP |
3085 | { |
3086 | struct rule_dpif *old_rule = ctx->rule; | |
8b1e5560 | 3087 | ovs_be64 old_cookie = ctx->rule_cookie; |
dc723c44 | 3088 | const struct rule_actions *actions; |
bb61b33d BP |
3089 | |
3090 | if (ctx->xin->resubmit_stats) { | |
70742c7f | 3091 | rule_dpif_credit_stats(rule, ctx->xin->resubmit_stats); |
bb61b33d BP |
3092 | } |
3093 | ||
98b07853 | 3094 | ctx->resubmits++; |
bb61b33d BP |
3095 | ctx->recurse++; |
3096 | ctx->rule = rule; | |
8b1e5560 | 3097 | ctx->rule_cookie = rule_dpif_get_flow_cookie(rule); |
6f00e29b BP |
3098 | actions = rule_dpif_get_actions(rule); |
3099 | do_xlate_actions(actions->ofpacts, actions->ofpacts_len, ctx); | |
8b1e5560 | 3100 | ctx->rule_cookie = old_cookie; |
bb61b33d BP |
3101 | ctx->rule = old_rule; |
3102 | ctx->recurse--; | |
bb61b33d BP |
3103 | } |
3104 | ||
bd3240ba SH |
3105 | static bool |
3106 | xlate_resubmit_resource_check(struct xlate_ctx *ctx) | |
9583bc14 | 3107 | { |
98b07853 BP |
3108 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); |
3109 | ||
adcf00ba | 3110 | if (ctx->recurse >= MAX_RESUBMIT_RECURSION + MAX_INTERNAL_RESUBMITS) { |
98b07853 BP |
3111 | VLOG_ERR_RL(&rl, "resubmit actions recursed over %d times", |
3112 | MAX_RESUBMIT_RECURSION); | |
adcf00ba | 3113 | } else if (ctx->resubmits >= MAX_RESUBMITS + MAX_INTERNAL_RESUBMITS) { |
98b07853 | 3114 | VLOG_ERR_RL(&rl, "over %d resubmit actions", MAX_RESUBMITS); |
1520ef4f | 3115 | } else if (ctx->odp_actions->size > UINT16_MAX) { |
98b07853 | 3116 | VLOG_ERR_RL(&rl, "resubmits yielded over 64 kB of actions"); |
6fd6ed71 | 3117 | } else if (ctx->stack.size >= 65536) { |
98b07853 BP |
3118 | VLOG_ERR_RL(&rl, "resubmits yielded over 64 kB of stack"); |
3119 | } else { | |
bd3240ba SH |
3120 | return true; |
3121 | } | |
3122 | ||
3123 | return false; | |
3124 | } | |
3125 | ||
3126 | static void | |
6d328fa2 SH |
3127 | xlate_table_action(struct xlate_ctx *ctx, ofp_port_t in_port, uint8_t table_id, |
3128 | bool may_packet_in, bool honor_table_miss) | |
bd3240ba | 3129 | { |
1d741d6d JR |
3130 | /* Check if we need to recirculate before matching in a table. */ |
3131 | if (ctx->was_mpls) { | |
3132 | ctx_trigger_recirculation(ctx); | |
3133 | return; | |
3134 | } | |
bd3240ba | 3135 | if (xlate_resubmit_resource_check(ctx)) { |
9583bc14 | 3136 | uint8_t old_table_id = ctx->table_id; |
3f207910 | 3137 | struct rule_dpif *rule; |
9583bc14 EJ |
3138 | |
3139 | ctx->table_id = table_id; | |
3140 | ||
34dd0d78 | 3141 | rule = rule_dpif_lookup_from_table(ctx->xbridge->ofproto, |
621b8064 | 3142 | ctx->tables_version, |
49a73e0c | 3143 | &ctx->xin->flow, ctx->xin->wc, |
34dd0d78 JR |
3144 | ctx->xin->resubmit_stats, |
3145 | &ctx->table_id, in_port, | |
3146 | may_packet_in, honor_table_miss); | |
9583bc14 | 3147 | |
a8c31348 BP |
3148 | if (OVS_UNLIKELY(ctx->xin->resubmit_hook)) { |
3149 | ctx->xin->resubmit_hook(ctx->xin, rule, ctx->recurse + 1); | |
ad3efdcb EJ |
3150 | } |
3151 | ||
a2143702 | 3152 | if (rule) { |
83709dfa JR |
3153 | /* Fill in the cache entry here instead of xlate_recursively |
3154 | * to make the reference counting more explicit. We take a | |
3155 | * reference in the lookups above if we are going to cache the | |
3156 | * rule. */ | |
3157 | if (ctx->xin->xcache) { | |
3158 | struct xc_entry *entry; | |
3159 | ||
3160 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_RULE); | |
3161 | entry->u.rule = rule; | |
1e1e1d19 | 3162 | rule_dpif_ref(rule); |
83709dfa | 3163 | } |
bb61b33d | 3164 | xlate_recursively(ctx, rule); |
ad3efdcb EJ |
3165 | } |
3166 | ||
9583bc14 | 3167 | ctx->table_id = old_table_id; |
98b07853 | 3168 | return; |
9583bc14 | 3169 | } |
98b07853 BP |
3170 | |
3171 | ctx->exit = true; | |
9583bc14 EJ |
3172 | } |
3173 | ||
f4fb341b | 3174 | static void |
1e684d7d RW |
3175 | xlate_group_stats(struct xlate_ctx *ctx, struct group_dpif *group, |
3176 | struct ofputil_bucket *bucket) | |
3177 | { | |
3178 | if (ctx->xin->resubmit_stats) { | |
3179 | group_dpif_credit_stats(group, bucket, ctx->xin->resubmit_stats); | |
3180 | } | |
3181 | if (ctx->xin->xcache) { | |
3182 | struct xc_entry *entry; | |
3183 | ||
3184 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_GROUP); | |
3185 | entry->u.group.group = group_dpif_ref(group); | |
3186 | entry->u.group.bucket = bucket; | |
3187 | } | |
3188 | } | |
3189 | ||
3190 | static void | |
3191 | xlate_group_bucket(struct xlate_ctx *ctx, struct ofputil_bucket *bucket) | |
f4fb341b SH |
3192 | { |
3193 | uint64_t action_list_stub[1024 / 8]; | |
3194 | struct ofpbuf action_list, action_set; | |
5b09e569 JR |
3195 | struct flow old_flow = ctx->xin->flow; |
3196 | bool old_was_mpls = ctx->was_mpls; | |
f4fb341b SH |
3197 | |
3198 | ofpbuf_use_const(&action_set, bucket->ofpacts, bucket->ofpacts_len); | |
3199 | ofpbuf_use_stub(&action_list, action_list_stub, sizeof action_list_stub); | |
3200 | ||
3201 | ofpacts_execute_action_set(&action_list, &action_set); | |
3202 | ctx->recurse++; | |
6fd6ed71 | 3203 | do_xlate_actions(action_list.data, action_list.size, ctx); |
f4fb341b SH |
3204 | ctx->recurse--; |
3205 | ||
3206 | ofpbuf_uninit(&action_set); | |
3207 | ofpbuf_uninit(&action_list); | |
5b09e569 | 3208 | |
e672ff9b JR |
3209 | /* Check if need to recirculate. */ |
3210 | if (exit_recirculates(ctx)) { | |
3211 | compose_recirculate_action(ctx); | |
3212 | } | |
3213 | ||
5b09e569 JR |
3214 | /* Roll back flow to previous state. |
3215 | * This is equivalent to cloning the packet for each bucket. | |
3216 | * | |
3217 | * As a side effect any subsequently applied actions will | |
3218 | * also effectively be applied to a clone of the packet taken | |
3219 | * just before applying the all or indirect group. | |
3220 | * | |
3221 | * Note that group buckets are action sets, hence they cannot modify the | |
3222 | * main action set. Also any stack actions are ignored when executing an | |
3223 | * action set, so group buckets cannot change the stack either. | |
3224 | * However, we do allow resubmit actions in group buckets, which could | |
3225 | * break the above assumptions. It is up to the controller to not mess up | |
3226 | * with the action_set and stack in the tables resubmitted to from | |
3227 | * group buckets. */ | |
3228 | ctx->xin->flow = old_flow; | |
3229 | ||
3230 | /* The group bucket popping MPLS should have no effect after bucket | |
3231 | * execution. */ | |
3232 | ctx->was_mpls = old_was_mpls; | |
3233 | ||
3234 | /* The fact that the group bucket exits (for any reason) does not mean that | |
3235 | * the translation after the group action should exit. Specifically, if | |
3236 | * the group bucket recirculates (which typically modifies the packet), the | |
3237 | * actions after the group action must continue processing with the | |
3238 | * original, not the recirculated packet! */ | |
3239 | ctx->exit = false; | |
f4fb341b SH |
3240 | } |
3241 | ||
3242 | static void | |
3243 | xlate_all_group(struct xlate_ctx *ctx, struct group_dpif *group) | |
3244 | { | |
1e684d7d | 3245 | struct ofputil_bucket *bucket; |
ca6ba700 | 3246 | const struct ovs_list *buckets; |
f4fb341b SH |
3247 | |
3248 | group_dpif_get_buckets(group, &buckets); | |
3249 | ||
3250 | LIST_FOR_EACH (bucket, list_node, buckets) { | |
3251 | xlate_group_bucket(ctx, bucket); | |
f4fb341b | 3252 | } |
1e684d7d | 3253 | xlate_group_stats(ctx, group, NULL); |
f4fb341b SH |
3254 | } |
3255 | ||
dd8cd4b4 SH |
3256 | static void |
3257 | xlate_ff_group(struct xlate_ctx *ctx, struct group_dpif *group) | |
3258 | { | |
1e684d7d | 3259 | struct ofputil_bucket *bucket; |
dd8cd4b4 SH |
3260 | |
3261 | bucket = group_first_live_bucket(ctx, group, 0); | |
3262 | if (bucket) { | |
3263 | xlate_group_bucket(ctx, bucket); | |
1e684d7d | 3264 | xlate_group_stats(ctx, group, bucket); |
dd8cd4b4 SH |
3265 | } |
3266 | } | |
3267 | ||
fe7e5749 | 3268 | static void |
7565c3e4 | 3269 | xlate_default_select_group(struct xlate_ctx *ctx, struct group_dpif *group) |
fe7e5749 | 3270 | { |
49a73e0c | 3271 | struct flow_wildcards *wc = ctx->wc; |
1e684d7d | 3272 | struct ofputil_bucket *bucket; |
fe7e5749 SH |
3273 | uint32_t basis; |
3274 | ||
1d1aae0b | 3275 | basis = flow_hash_symmetric_l4(&ctx->xin->flow, 0); |
80e3509d | 3276 | flow_mask_hash_fields(&ctx->xin->flow, wc, NX_HASH_FIELDS_SYMMETRIC_L4); |
fe7e5749 SH |
3277 | bucket = group_best_live_bucket(ctx, group, basis); |
3278 | if (bucket) { | |
fe7e5749 | 3279 | xlate_group_bucket(ctx, bucket); |
1e684d7d | 3280 | xlate_group_stats(ctx, group, bucket); |
fe7e5749 SH |
3281 | } |
3282 | } | |
3283 | ||
0c4b9393 SH |
3284 | static void |
3285 | xlate_hash_fields_select_group(struct xlate_ctx *ctx, struct group_dpif *group) | |
3286 | { | |
3287 | struct mf_bitmap hash_fields = MF_BITMAP_INITIALIZER; | |
0c4b9393 SH |
3288 | const struct field_array *fields; |
3289 | struct ofputil_bucket *bucket; | |
3290 | uint32_t basis; | |
3291 | int i; | |
3292 | ||
3293 | fields = group_dpif_get_fields(group); | |
3294 | basis = hash_uint64(group_dpif_get_selection_method_param(group)); | |
3295 | ||
3296 | /* Determine which fields to hash */ | |
3297 | for (i = 0; i < MFF_N_IDS; i++) { | |
3298 | if (bitmap_is_set(fields->used.bm, i)) { | |
3299 | const struct mf_field *mf; | |
3300 | ||
3301 | /* If the field is already present in 'hash_fields' then | |
3302 | * this loop has already checked that it and its pre-requisites | |
3303 | * are present in the flow and its pre-requisites have | |
3304 | * already been added to 'hash_fields'. There is nothing more | |
3305 | * to do here and as an optimisation the loop can continue. */ | |
3306 | if (bitmap_is_set(hash_fields.bm, i)) { | |
3307 | continue; | |
3308 | } | |
3309 | ||
3310 | mf = mf_from_id(i); | |
3311 | ||
3312 | /* Only hash a field if it and its pre-requisites are present | |
3313 | * in the flow. */ | |
3314 | if (!mf_are_prereqs_ok(mf, &ctx->xin->flow)) { | |
3315 | continue; | |
3316 | } | |
3317 | ||
3318 | /* Hash both the field and its pre-requisites */ | |
3319 | mf_bitmap_set_field_and_prereqs(mf, &hash_fields); | |
3320 | } | |
3321 | } | |
3322 | ||
3323 | /* Hash the fields */ | |
3324 | for (i = 0; i < MFF_N_IDS; i++) { | |
3325 | if (bitmap_is_set(hash_fields.bm, i)) { | |
3326 | const struct mf_field *mf = mf_from_id(i); | |
3327 | union mf_value value; | |
3328 | int j; | |
3329 | ||
3330 | mf_get_value(mf, &ctx->xin->flow, &value); | |
3331 | /* This seems inefficient but so does apply_mask() */ | |
3332 | for (j = 0; j < mf->n_bytes; j++) { | |
3333 | ((uint8_t *) &value)[j] &= ((uint8_t *) &fields->value[i])[j]; | |
3334 | } | |
3335 | basis = hash_bytes(&value, mf->n_bytes, basis); | |
3336 | ||
1cb20095 JG |
3337 | /* For tunnels, hash in whether the field is present. */ |
3338 | if (mf_is_tun_metadata(mf)) { | |
3339 | basis = hash_boolean(mf_is_set(mf, &ctx->xin->flow), basis); | |
3340 | } | |
3341 | ||
49a73e0c | 3342 | mf_mask_field(mf, &ctx->wc->masks); |
0c4b9393 SH |
3343 | } |
3344 | } | |
3345 | ||
3346 | bucket = group_best_live_bucket(ctx, group, basis); | |
3347 | if (bucket) { | |
3348 | xlate_group_bucket(ctx, bucket); | |
3349 | xlate_group_stats(ctx, group, bucket); | |
3350 | } | |
3351 | } | |
3352 | ||
7565c3e4 SH |
3353 | static void |
3354 | xlate_select_group(struct xlate_ctx *ctx, struct group_dpif *group) | |
3355 | { | |
3356 | const char *selection_method = group_dpif_get_selection_method(group); | |
3357 | ||
3358 | if (selection_method[0] == '\0') { | |
3359 | xlate_default_select_group(ctx, group); | |
0c4b9393 SH |
3360 | } else if (!strcasecmp("hash", selection_method)) { |
3361 | xlate_hash_fields_select_group(ctx, group); | |
7565c3e4 SH |
3362 | } else { |
3363 | /* Parsing of groups should ensure this never happens */ | |
3364 | OVS_NOT_REACHED(); | |
3365 | } | |
3366 | } | |
3367 | ||
f4fb341b SH |
3368 | static void |
3369 | xlate_group_action__(struct xlate_ctx *ctx, struct group_dpif *group) | |
3370 | { | |
0eb48fe1 | 3371 | bool was_in_group = ctx->in_group; |
5a070238 BP |
3372 | ctx->in_group = true; |
3373 | ||
f4fb341b SH |
3374 | switch (group_dpif_get_type(group)) { |
3375 | case OFPGT11_ALL: | |
3376 | case OFPGT11_INDIRECT: | |
3377 | xlate_all_group(ctx, group); | |
3378 | break; | |
3379 | case OFPGT11_SELECT: | |
fe7e5749 | 3380 | xlate_select_group(ctx, group); |
f4fb341b | 3381 | break; |
dd8cd4b4 SH |
3382 | case OFPGT11_FF: |
3383 | xlate_ff_group(ctx, group); | |
3384 | break; | |
f4fb341b | 3385 | default: |
428b2edd | 3386 | OVS_NOT_REACHED(); |
f4fb341b | 3387 | } |
809c7548 | 3388 | group_dpif_unref(group); |
5a070238 | 3389 | |
0eb48fe1 | 3390 | ctx->in_group = was_in_group; |
f4fb341b SH |
3391 | } |
3392 | ||
3393 | static bool | |
3394 | xlate_group_action(struct xlate_ctx *ctx, uint32_t group_id) | |
3395 | { | |
0eb48fe1 | 3396 | if (xlate_resubmit_resource_check(ctx)) { |
f4fb341b SH |
3397 | struct group_dpif *group; |
3398 | bool got_group; | |
3399 | ||
3400 | got_group = group_dpif_lookup(ctx->xbridge->ofproto, group_id, &group); | |
3401 | if (got_group) { | |
3402 | xlate_group_action__(ctx, group); | |
3403 | } else { | |
3404 | return true; | |
3405 | } | |
3406 | } | |
3407 | ||
3408 | return false; | |
3409 | } | |
3410 | ||
9583bc14 EJ |
3411 | static void |
3412 | xlate_ofpact_resubmit(struct xlate_ctx *ctx, | |
3413 | const struct ofpact_resubmit *resubmit) | |
3414 | { | |
4e022ec0 | 3415 | ofp_port_t in_port; |
9583bc14 | 3416 | uint8_t table_id; |
adcf00ba AZ |
3417 | bool may_packet_in = false; |
3418 | bool honor_table_miss = false; | |
3419 | ||
3420 | if (ctx->rule && rule_dpif_is_internal(ctx->rule)) { | |
3421 | /* Still allow missed packets to be sent to the controller | |
3422 | * if resubmitting from an internal table. */ | |
3423 | may_packet_in = true; | |
3424 | honor_table_miss = true; | |
3425 | } | |
9583bc14 EJ |
3426 | |
3427 | in_port = resubmit->in_port; | |
3428 | if (in_port == OFPP_IN_PORT) { | |
4e022ec0 | 3429 | in_port = ctx->xin->flow.in_port.ofp_port; |
9583bc14 EJ |
3430 | } |
3431 | ||
3432 | table_id = resubmit->table_id; | |
3433 | if (table_id == 255) { | |
3434 | table_id = ctx->table_id; | |
3435 | } | |
3436 | ||
adcf00ba AZ |
3437 | xlate_table_action(ctx, in_port, table_id, may_packet_in, |
3438 | honor_table_miss); | |
9583bc14 EJ |
3439 | } |
3440 | ||
3441 | static void | |
3442 | flood_packets(struct xlate_ctx *ctx, bool all) | |
3443 | { | |
46c88433 | 3444 | const struct xport *xport; |
9583bc14 | 3445 | |
46c88433 EJ |
3446 | HMAP_FOR_EACH (xport, ofp_node, &ctx->xbridge->xports) { |
3447 | if (xport->ofp_port == ctx->xin->flow.in_port.ofp_port) { | |
9583bc14 EJ |
3448 | continue; |
3449 | } | |
3450 | ||
3451 | if (all) { | |
e93ef1c7 | 3452 | compose_output_action__(ctx, xport->ofp_port, NULL, false); |
46c88433 | 3453 | } else if (!(xport->config & OFPUTIL_PC_NO_FLOOD)) { |
e93ef1c7 | 3454 | compose_output_action(ctx, xport->ofp_port, NULL); |
9583bc14 EJ |
3455 | } |
3456 | } | |
3457 | ||
2031ef97 | 3458 | ctx->nf_output_iface = NF_OUT_FLOOD; |
9583bc14 EJ |
3459 | } |
3460 | ||
3461 | static void | |
3462 | execute_controller_action(struct xlate_ctx *ctx, int len, | |
3463 | enum ofp_packet_in_reason reason, | |
3464 | uint16_t controller_id) | |
3465 | { | |
0fb7792a | 3466 | struct ofproto_packet_in *pin; |
e14deea0 | 3467 | struct dp_packet *packet; |
9583bc14 | 3468 | |
04594cd5 | 3469 | ctx->xout->slow |= SLOW_CONTROLLER; |
9583bc14 EJ |
3470 | if (!ctx->xin->packet) { |
3471 | return; | |
3472 | } | |
3473 | ||
cf62fa4c | 3474 | packet = dp_packet_clone(ctx->xin->packet); |
9583bc14 | 3475 | |
704bb0bf | 3476 | xlate_commit_actions(ctx); |
9583bc14 | 3477 | |
41ccaa24 | 3478 | odp_execute_actions(NULL, &packet, 1, false, |
1520ef4f | 3479 | ctx->odp_actions->data, ctx->odp_actions->size, NULL); |
9583bc14 | 3480 | |
ada3a58d | 3481 | pin = xmalloc(sizeof *pin); |
cf62fa4c PS |
3482 | pin->up.packet_len = dp_packet_size(packet); |
3483 | pin->up.packet = dp_packet_steal_data(packet); | |
0fb7792a | 3484 | pin->up.reason = reason; |
0fb7792a | 3485 | pin->up.table_id = ctx->table_id; |
8b1e5560 | 3486 | pin->up.cookie = ctx->rule_cookie; |
0fb7792a | 3487 | |
50dcbd8e | 3488 | flow_get_metadata(&ctx->xin->flow, &pin->up.flow_metadata); |
9583bc14 | 3489 | |
f11c7538 | 3490 | pin->controller_id = controller_id; |
d38a3c7b | 3491 | pin->send_len = len; |
32260212 SH |
3492 | /* If a rule is a table-miss rule then this is |
3493 | * a table-miss handled by a table-miss rule. | |
3494 | * | |
3495 | * Else, if rule is internal and has a controller action, | |
3496 | * the later being implied by the rule being processed here, | |
3497 | * then this is a table-miss handled without a table-miss rule. | |
3498 | * | |
3499 | * Otherwise this is not a table-miss. */ | |
3500 | pin->miss_type = OFPROTO_PACKET_IN_NO_MISS; | |
3501 | if (ctx->rule) { | |
3502 | if (rule_dpif_is_table_miss(ctx->rule)) { | |
3503 | pin->miss_type = OFPROTO_PACKET_IN_MISS_FLOW; | |
3504 | } else if (rule_dpif_is_internal(ctx->rule)) { | |
3505 | pin->miss_type = OFPROTO_PACKET_IN_MISS_WITHOUT_FLOW; | |
3506 | } | |
3507 | } | |
ada3a58d | 3508 | ofproto_dpif_send_packet_in(ctx->xbridge->ofproto, pin); |
e14deea0 | 3509 | dp_packet_delete(packet); |
9583bc14 EJ |
3510 | } |
3511 | ||
e672ff9b | 3512 | /* Called only when ctx->recirc_action_offset is set. */ |
7bbdd84f | 3513 | static void |
e672ff9b | 3514 | compose_recirculate_action(struct xlate_ctx *ctx) |
7bbdd84f | 3515 | { |
e672ff9b | 3516 | struct recirc_metadata md; |
7bbdd84f | 3517 | uint32_t id; |
7bbdd84f | 3518 | |
704bb0bf | 3519 | xlate_commit_actions(ctx); |
e672ff9b | 3520 | recirc_metadata_from_flow(&md, &ctx->xin->flow); |
7bbdd84f | 3521 | |
e672ff9b | 3522 | ovs_assert(ctx->recirc_action_offset >= 0); |
7bbdd84f | 3523 | |
2082425c BP |
3524 | struct recirc_state state = { |
3525 | .table_id = 0, | |
3526 | .ofproto = ctx->xbridge->ofproto, | |
3527 | .metadata = md, | |
3528 | .stack = &ctx->stack, | |
29bae541 | 3529 | .mirrors = ctx->mirrors, |
2082425c BP |
3530 | .action_set_len = ctx->recirc_action_offset, |
3531 | .ofpacts_len = ctx->action_set.size, | |
3532 | .ofpacts = ctx->action_set.data, | |
3533 | }; | |
3534 | ||
e672ff9b JR |
3535 | /* Only allocate recirculation ID if we have a packet. */ |
3536 | if (ctx->xin->packet) { | |
3537 | /* Allocate a unique recirc id for the given metadata state in the | |
3538 | * flow. The life-cycle of this recirc id is managed by associating it | |
3539 | * with the udpif key ('ukey') created for each new datapath flow. */ | |
2082425c | 3540 | id = recirc_alloc_id_ctx(&state); |
e672ff9b JR |
3541 | if (!id) { |
3542 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
3543 | VLOG_ERR_RL(&rl, "Failed to allocate recirculation id"); | |
3544 | return; | |
e2676b44 | 3545 | } |
e672ff9b JR |
3546 | xlate_out_add_recirc(ctx->xout, id); |
3547 | } else { | |
3548 | /* Look up an existing recirc id for the given metadata state in the | |
3549 | * flow. No new reference is taken, as the ID is RCU protected and is | |
2082425c BP |
3550 | * only required temporarily for verification. |
3551 | * | |
3552 | * This might fail and return 0. We let zero 'id' to be used in the | |
3553 | * RECIRC action below, which will fail all revalidations as zero is | |
3554 | * not a valid recirculation ID. */ | |
3555 | id = recirc_find_id(&state); | |
7bbdd84f SH |
3556 | } |
3557 | ||
1520ef4f | 3558 | nl_msg_put_u32(ctx->odp_actions, OVS_ACTION_ATTR_RECIRC, id); |
e672ff9b JR |
3559 | |
3560 | /* Undo changes done by recirculation. */ | |
3561 | ctx->action_set.size = ctx->recirc_action_offset; | |
3562 | ctx->recirc_action_offset = -1; | |
3563 | ctx->last_unroll_offset = -1; | |
7bbdd84f SH |
3564 | } |
3565 | ||
8bfd0fda BP |
3566 | static void |
3567 | compose_mpls_push_action(struct xlate_ctx *ctx, struct ofpact_push_mpls *mpls) | |
9583bc14 | 3568 | { |
33bf9176 | 3569 | struct flow *flow = &ctx->xin->flow; |
8bfd0fda | 3570 | int n; |
33bf9176 | 3571 | |
8bfd0fda | 3572 | ovs_assert(eth_type_mpls(mpls->ethertype)); |
b0a17866 | 3573 | |
49a73e0c | 3574 | n = flow_count_mpls_labels(flow, ctx->wc); |
8bfd0fda | 3575 | if (!n) { |
704bb0bf | 3576 | xlate_commit_actions(ctx); |
8bfd0fda BP |
3577 | } else if (n >= FLOW_MAX_MPLS_LABELS) { |
3578 | if (ctx->xin->packet != NULL) { | |
3579 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
3580 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet on which an " | |
3581 | "MPLS push action can't be performed as it would " | |
3582 | "have more MPLS LSEs than the %d supported.", | |
3583 | ctx->xbridge->name, FLOW_MAX_MPLS_LABELS); | |
9583bc14 | 3584 | } |
8bfd0fda BP |
3585 | ctx->exit = true; |
3586 | return; | |
9583bc14 | 3587 | } |
b0a17866 | 3588 | |
49a73e0c | 3589 | flow_push_mpls(flow, n, mpls->ethertype, ctx->wc); |
9583bc14 EJ |
3590 | } |
3591 | ||
8bfd0fda | 3592 | static void |
9cfef3d0 | 3593 | compose_mpls_pop_action(struct xlate_ctx *ctx, ovs_be16 eth_type) |
9583bc14 | 3594 | { |
8bfd0fda | 3595 | struct flow *flow = &ctx->xin->flow; |
49a73e0c | 3596 | int n = flow_count_mpls_labels(flow, ctx->wc); |
33bf9176 | 3597 | |
49a73e0c | 3598 | if (flow_pop_mpls(flow, n, eth_type, ctx->wc)) { |
2494ccd7 | 3599 | if (ctx->xbridge->support.odp.recirc) { |
7bbdd84f SH |
3600 | ctx->was_mpls = true; |
3601 | } | |
3602 | } else if (n >= FLOW_MAX_MPLS_LABELS) { | |
8bfd0fda BP |
3603 | if (ctx->xin->packet != NULL) { |
3604 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
3605 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet on which an " | |
3606 | "MPLS pop action can't be performed as it has " | |
3607 | "more MPLS LSEs than the %d supported.", | |
3608 | ctx->xbridge->name, FLOW_MAX_MPLS_LABELS); | |
3609 | } | |
3610 | ctx->exit = true; | |
1520ef4f | 3611 | ofpbuf_clear(ctx->odp_actions); |
9583bc14 EJ |
3612 | } |
3613 | } | |
3614 | ||
3615 | static bool | |
3616 | compose_dec_ttl(struct xlate_ctx *ctx, struct ofpact_cnt_ids *ids) | |
3617 | { | |
33bf9176 BP |
3618 | struct flow *flow = &ctx->xin->flow; |
3619 | ||
3620 | if (!is_ip_any(flow)) { | |
9583bc14 EJ |
3621 | return false; |
3622 | } | |
3623 | ||
49a73e0c | 3624 | ctx->wc->masks.nw_ttl = 0xff; |
33bf9176 BP |
3625 | if (flow->nw_ttl > 1) { |
3626 | flow->nw_ttl--; | |
9583bc14 EJ |
3627 | return false; |
3628 | } else { | |
3629 | size_t i; | |
3630 | ||
3631 | for (i = 0; i < ids->n_controllers; i++) { | |
3632 | execute_controller_action(ctx, UINT16_MAX, OFPR_INVALID_TTL, | |
3633 | ids->cnt_ids[i]); | |
3634 | } | |
3635 | ||
3636 | /* Stop processing for current table. */ | |
3637 | return true; | |
3638 | } | |
3639 | } | |
3640 | ||
8bfd0fda | 3641 | static void |
097d4939 JR |
3642 | compose_set_mpls_label_action(struct xlate_ctx *ctx, ovs_be32 label) |
3643 | { | |
8bfd0fda | 3644 | if (eth_type_mpls(ctx->xin->flow.dl_type)) { |
49a73e0c | 3645 | ctx->wc->masks.mpls_lse[0] |= htonl(MPLS_LABEL_MASK); |
8bfd0fda | 3646 | set_mpls_lse_label(&ctx->xin->flow.mpls_lse[0], label); |
097d4939 | 3647 | } |
097d4939 JR |
3648 | } |
3649 | ||
8bfd0fda | 3650 | static void |
097d4939 JR |
3651 | compose_set_mpls_tc_action(struct xlate_ctx *ctx, uint8_t tc) |
3652 | { | |
8bfd0fda | 3653 | if (eth_type_mpls(ctx->xin->flow.dl_type)) { |
49a73e0c | 3654 | ctx->wc->masks.mpls_lse[0] |= htonl(MPLS_TC_MASK); |
8bfd0fda | 3655 | set_mpls_lse_tc(&ctx->xin->flow.mpls_lse[0], tc); |
097d4939 | 3656 | } |
097d4939 JR |
3657 | } |
3658 | ||
8bfd0fda | 3659 | static void |
9cfef3d0 | 3660 | compose_set_mpls_ttl_action(struct xlate_ctx *ctx, uint8_t ttl) |
9583bc14 | 3661 | { |
8bfd0fda | 3662 | if (eth_type_mpls(ctx->xin->flow.dl_type)) { |
49a73e0c | 3663 | ctx->wc->masks.mpls_lse[0] |= htonl(MPLS_TTL_MASK); |
8bfd0fda | 3664 | set_mpls_lse_ttl(&ctx->xin->flow.mpls_lse[0], ttl); |
b0a17866 | 3665 | } |
9583bc14 EJ |
3666 | } |
3667 | ||
3668 | static bool | |
9cfef3d0 | 3669 | compose_dec_mpls_ttl_action(struct xlate_ctx *ctx) |
9583bc14 | 3670 | { |
33bf9176 | 3671 | struct flow *flow = &ctx->xin->flow; |
1dd35f8a | 3672 | |
8bfd0fda | 3673 | if (eth_type_mpls(flow->dl_type)) { |
22d38fca JR |
3674 | uint8_t ttl = mpls_lse_to_ttl(flow->mpls_lse[0]); |
3675 | ||
49a73e0c | 3676 | ctx->wc->masks.mpls_lse[0] |= htonl(MPLS_TTL_MASK); |
8bfd0fda BP |
3677 | if (ttl > 1) { |
3678 | ttl--; | |
3679 | set_mpls_lse_ttl(&flow->mpls_lse[0], ttl); | |
3680 | return false; | |
3681 | } else { | |
3682 | execute_controller_action(ctx, UINT16_MAX, OFPR_INVALID_TTL, 0); | |
8bfd0fda | 3683 | } |
9583bc14 | 3684 | } |
22d38fca JR |
3685 | |
3686 | /* Stop processing for current table. */ | |
3687 | return true; | |
9583bc14 EJ |
3688 | } |
3689 | ||
3690 | static void | |
3691 | xlate_output_action(struct xlate_ctx *ctx, | |
4e022ec0 | 3692 | ofp_port_t port, uint16_t max_len, bool may_packet_in) |
9583bc14 | 3693 | { |
2031ef97 | 3694 | ofp_port_t prev_nf_output_iface = ctx->nf_output_iface; |
9583bc14 | 3695 | |
2031ef97 | 3696 | ctx->nf_output_iface = NF_OUT_DROP; |
9583bc14 EJ |
3697 | |
3698 | switch (port) { | |
3699 | case OFPP_IN_PORT: | |
e93ef1c7 | 3700 | compose_output_action(ctx, ctx->xin->flow.in_port.ofp_port, NULL); |
9583bc14 EJ |
3701 | break; |
3702 | case OFPP_TABLE: | |
4e022ec0 | 3703 | xlate_table_action(ctx, ctx->xin->flow.in_port.ofp_port, |
6d328fa2 | 3704 | 0, may_packet_in, true); |
9583bc14 EJ |
3705 | break; |
3706 | case OFPP_NORMAL: | |
3707 | xlate_normal(ctx); | |
3708 | break; | |
3709 | case OFPP_FLOOD: | |
3710 | flood_packets(ctx, false); | |
3711 | break; | |
3712 | case OFPP_ALL: | |
3713 | flood_packets(ctx, true); | |
3714 | break; | |
3715 | case OFPP_CONTROLLER: | |
3a11fd5b | 3716 | execute_controller_action(ctx, max_len, |
029ca940 SS |
3717 | (ctx->in_group ? OFPR_GROUP |
3718 | : ctx->in_action_set ? OFPR_ACTION_SET | |
3719 | : OFPR_ACTION), | |
3720 | 0); | |
9583bc14 EJ |
3721 | break; |
3722 | case OFPP_NONE: | |
3723 | break; | |
3724 | case OFPP_LOCAL: | |
3725 | default: | |
4e022ec0 | 3726 | if (port != ctx->xin->flow.in_port.ofp_port) { |
e93ef1c7 | 3727 | compose_output_action(ctx, port, NULL); |
9583bc14 EJ |
3728 | } else { |
3729 | xlate_report(ctx, "skipping output to input port"); | |
3730 | } | |
3731 | break; | |
3732 | } | |
3733 | ||
3734 | if (prev_nf_output_iface == NF_OUT_FLOOD) { | |
2031ef97 BP |
3735 | ctx->nf_output_iface = NF_OUT_FLOOD; |
3736 | } else if (ctx->nf_output_iface == NF_OUT_DROP) { | |
3737 | ctx->nf_output_iface = prev_nf_output_iface; | |
9583bc14 | 3738 | } else if (prev_nf_output_iface != NF_OUT_DROP && |
2031ef97 BP |
3739 | ctx->nf_output_iface != NF_OUT_FLOOD) { |
3740 | ctx->nf_output_iface = NF_OUT_MULTI; | |
9583bc14 EJ |
3741 | } |
3742 | } | |
3743 | ||
3744 | static void | |
3745 | xlate_output_reg_action(struct xlate_ctx *ctx, | |
3746 | const struct ofpact_output_reg *or) | |
3747 | { | |
3748 | uint64_t port = mf_get_subfield(&or->src, &ctx->xin->flow); | |
3749 | if (port <= UINT16_MAX) { | |
3750 | union mf_subvalue value; | |
3751 | ||
3752 | memset(&value, 0xff, sizeof value); | |
49a73e0c | 3753 | mf_write_subfield_flow(&or->src, &value, &ctx->wc->masks); |
4e022ec0 AW |
3754 | xlate_output_action(ctx, u16_to_ofp(port), |
3755 | or->max_len, false); | |
9583bc14 EJ |
3756 | } |
3757 | } | |
3758 | ||
3759 | static void | |
3760 | xlate_enqueue_action(struct xlate_ctx *ctx, | |
3761 | const struct ofpact_enqueue *enqueue) | |
3762 | { | |
4e022ec0 | 3763 | ofp_port_t ofp_port = enqueue->port; |
9583bc14 EJ |
3764 | uint32_t queue_id = enqueue->queue; |
3765 | uint32_t flow_priority, priority; | |
3766 | int error; | |
3767 | ||
3768 | /* Translate queue to priority. */ | |
89a8a7f0 | 3769 | error = dpif_queue_to_priority(ctx->xbridge->dpif, queue_id, &priority); |
9583bc14 EJ |
3770 | if (error) { |
3771 | /* Fall back to ordinary output action. */ | |
3772 | xlate_output_action(ctx, enqueue->port, 0, false); | |
3773 | return; | |
3774 | } | |
3775 | ||
3776 | /* Check output port. */ | |
3777 | if (ofp_port == OFPP_IN_PORT) { | |
4e022ec0 AW |
3778 | ofp_port = ctx->xin->flow.in_port.ofp_port; |
3779 | } else if (ofp_port == ctx->xin->flow.in_port.ofp_port) { | |
9583bc14 EJ |
3780 | return; |
3781 | } | |
3782 | ||
3783 | /* Add datapath actions. */ | |
3784 | flow_priority = ctx->xin->flow.skb_priority; | |
3785 | ctx->xin->flow.skb_priority = priority; | |
e93ef1c7 | 3786 | compose_output_action(ctx, ofp_port, NULL); |
9583bc14 EJ |
3787 | ctx->xin->flow.skb_priority = flow_priority; |
3788 | ||
3789 | /* Update NetFlow output port. */ | |
2031ef97 BP |
3790 | if (ctx->nf_output_iface == NF_OUT_DROP) { |
3791 | ctx->nf_output_iface = ofp_port; | |
3792 | } else if (ctx->nf_output_iface != NF_OUT_FLOOD) { | |
3793 | ctx->nf_output_iface = NF_OUT_MULTI; | |
9583bc14 EJ |
3794 | } |
3795 | } | |
3796 | ||
3797 | static void | |
3798 | xlate_set_queue_action(struct xlate_ctx *ctx, uint32_t queue_id) | |
3799 | { | |
3800 | uint32_t skb_priority; | |
3801 | ||
89a8a7f0 | 3802 | if (!dpif_queue_to_priority(ctx->xbridge->dpif, queue_id, &skb_priority)) { |
9583bc14 EJ |
3803 | ctx->xin->flow.skb_priority = skb_priority; |
3804 | } else { | |
3805 | /* Couldn't translate queue to a priority. Nothing to do. A warning | |
3806 | * has already been logged. */ | |
3807 | } | |
3808 | } | |
3809 | ||
3810 | static bool | |
46c88433 | 3811 | slave_enabled_cb(ofp_port_t ofp_port, void *xbridge_) |
9583bc14 | 3812 | { |
46c88433 EJ |
3813 | const struct xbridge *xbridge = xbridge_; |
3814 | struct xport *port; | |
9583bc14 EJ |
3815 | |
3816 | switch (ofp_port) { | |
3817 | case OFPP_IN_PORT: | |
3818 | case OFPP_TABLE: | |
3819 | case OFPP_NORMAL: | |
3820 | case OFPP_FLOOD: | |
3821 | case OFPP_ALL: | |
3822 | case OFPP_NONE: | |
3823 | return true; | |
3824 | case OFPP_CONTROLLER: /* Not supported by the bundle action. */ | |
3825 | return false; | |
3826 | default: | |
46c88433 | 3827 | port = get_ofp_port(xbridge, ofp_port); |
9583bc14 EJ |
3828 | return port ? port->may_enable : false; |
3829 | } | |
3830 | } | |
3831 | ||
3832 | static void | |
3833 | xlate_bundle_action(struct xlate_ctx *ctx, | |
3834 | const struct ofpact_bundle *bundle) | |
3835 | { | |
4e022ec0 | 3836 | ofp_port_t port; |
9583bc14 | 3837 | |
49a73e0c | 3838 | port = bundle_execute(bundle, &ctx->xin->flow, ctx->wc, slave_enabled_cb, |
46c88433 | 3839 | CONST_CAST(struct xbridge *, ctx->xbridge)); |
9583bc14 | 3840 | if (bundle->dst.field) { |
49a73e0c | 3841 | nxm_reg_load(&bundle->dst, ofp_to_u16(port), &ctx->xin->flow, ctx->wc); |
9583bc14 EJ |
3842 | } else { |
3843 | xlate_output_action(ctx, port, 0, false); | |
3844 | } | |
3845 | } | |
3846 | ||
3847 | static void | |
4165b5e0 JS |
3848 | xlate_learn_action__(struct xlate_ctx *ctx, const struct ofpact_learn *learn, |
3849 | struct ofputil_flow_mod *fm, struct ofpbuf *ofpacts) | |
9583bc14 | 3850 | { |
4165b5e0 JS |
3851 | learn_execute(learn, &ctx->xin->flow, fm, ofpacts); |
3852 | if (ctx->xin->may_learn) { | |
3853 | ofproto_dpif_flow_mod(ctx->xbridge->ofproto, fm); | |
3854 | } | |
3855 | } | |
9583bc14 | 3856 | |
4165b5e0 JS |
3857 | static void |
3858 | xlate_learn_action(struct xlate_ctx *ctx, const struct ofpact_learn *learn) | |
3859 | { | |
49a73e0c | 3860 | learn_mask(learn, ctx->wc); |
9583bc14 | 3861 | |
b256dc52 JS |
3862 | if (ctx->xin->xcache) { |
3863 | struct xc_entry *entry; | |
3864 | ||
3865 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_LEARN); | |
4165b5e0 JS |
3866 | entry->u.learn.ofproto = ctx->xbridge->ofproto; |
3867 | entry->u.learn.fm = xmalloc(sizeof *entry->u.learn.fm); | |
3868 | entry->u.learn.ofpacts = ofpbuf_new(64); | |
3869 | xlate_learn_action__(ctx, learn, entry->u.learn.fm, | |
3870 | entry->u.learn.ofpacts); | |
3871 | } else if (ctx->xin->may_learn) { | |
3872 | uint64_t ofpacts_stub[1024 / 8]; | |
3873 | struct ofputil_flow_mod fm; | |
3874 | struct ofpbuf ofpacts; | |
3875 | ||
3876 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); | |
3877 | xlate_learn_action__(ctx, learn, &fm, &ofpacts); | |
3878 | ofpbuf_uninit(&ofpacts); | |
b256dc52 JS |
3879 | } |
3880 | } | |
3881 | ||
3882 | static void | |
3883 | xlate_fin_timeout__(struct rule_dpif *rule, uint16_t tcp_flags, | |
3884 | uint16_t idle_timeout, uint16_t hard_timeout) | |
3885 | { | |
3886 | if (tcp_flags & (TCP_FIN | TCP_RST)) { | |
3887 | rule_dpif_reduce_timeouts(rule, idle_timeout, hard_timeout); | |
3888 | } | |
9583bc14 EJ |
3889 | } |
3890 | ||
9583bc14 EJ |
3891 | static void |
3892 | xlate_fin_timeout(struct xlate_ctx *ctx, | |
3893 | const struct ofpact_fin_timeout *oft) | |
3894 | { | |
b256dc52 JS |
3895 | if (ctx->rule) { |
3896 | xlate_fin_timeout__(ctx->rule, ctx->xin->tcp_flags, | |
3897 | oft->fin_idle_timeout, oft->fin_hard_timeout); | |
3898 | if (ctx->xin->xcache) { | |
3899 | struct xc_entry *entry; | |
3900 | ||
3901 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_FIN_TIMEOUT); | |
83709dfa JR |
3902 | /* XC_RULE already holds a reference on the rule, none is taken |
3903 | * here. */ | |
b256dc52 JS |
3904 | entry->u.fin.rule = ctx->rule; |
3905 | entry->u.fin.idle = oft->fin_idle_timeout; | |
3906 | entry->u.fin.hard = oft->fin_hard_timeout; | |
b256dc52 | 3907 | } |
9583bc14 EJ |
3908 | } |
3909 | } | |
3910 | ||
3911 | static void | |
3912 | xlate_sample_action(struct xlate_ctx *ctx, | |
3913 | const struct ofpact_sample *os) | |
3914 | { | |
e824d78d JR |
3915 | /* Scale the probability from 16-bit to 32-bit while representing |
3916 | * the same percentage. */ | |
3917 | uint32_t probability = (os->probability << 16) | os->probability; | |
3918 | ||
b440dd8c | 3919 | if (!ctx->xbridge->support.variable_length_userdata) { |
e824d78d JR |
3920 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); |
3921 | ||
3922 | VLOG_ERR_RL(&rl, "ignoring NXAST_SAMPLE action because datapath " | |
3923 | "lacks support (needs Linux 3.10+ or kernel module from " | |
3924 | "OVS 1.11+)"); | |
3925 | return; | |
3926 | } | |
3927 | ||
704bb0bf | 3928 | xlate_commit_actions(ctx); |
e824d78d | 3929 | |
a6092018 BP |
3930 | union user_action_cookie cookie = { |
3931 | .flow_sample = { | |
3932 | .type = USER_ACTION_COOKIE_FLOW_SAMPLE, | |
3933 | .probability = os->probability, | |
3934 | .collector_set_id = os->collector_set_id, | |
3935 | .obs_domain_id = os->obs_domain_id, | |
3936 | .obs_point_id = os->obs_point_id, | |
3937 | } | |
3938 | }; | |
3939 | compose_sample_action(ctx, probability, &cookie, sizeof cookie.flow_sample, | |
3940 | ODPP_NONE, false); | |
9583bc14 EJ |
3941 | } |
3942 | ||
3943 | static bool | |
46c88433 | 3944 | may_receive(const struct xport *xport, struct xlate_ctx *ctx) |
9583bc14 | 3945 | { |
bbbca389 | 3946 | if (xport->config & (is_stp(&ctx->xin->flow) |
46c88433 EJ |
3947 | ? OFPUTIL_PC_NO_RECV_STP |
3948 | : OFPUTIL_PC_NO_RECV)) { | |
9583bc14 EJ |
3949 | return false; |
3950 | } | |
3951 | ||
3952 | /* Only drop packets here if both forwarding and learning are | |
3953 | * disabled. If just learning is enabled, we need to have | |
3954 | * OFPP_NORMAL and the learning action have a look at the packet | |
3955 | * before we can drop it. */ | |
9efd308e DV |
3956 | if ((!xport_stp_forward_state(xport) && !xport_stp_learn_state(xport)) || |
3957 | (!xport_rstp_forward_state(xport) && !xport_rstp_learn_state(xport))) { | |
9583bc14 EJ |
3958 | return false; |
3959 | } | |
3960 | ||
3961 | return true; | |
3962 | } | |
3963 | ||
7fdb60a7 SH |
3964 | static void |
3965 | xlate_write_actions(struct xlate_ctx *ctx, const struct ofpact *a) | |
3966 | { | |
c61f3870 BP |
3967 | const struct ofpact_nest *on = ofpact_get_WRITE_ACTIONS(a); |
3968 | size_t on_len = ofpact_nest_get_action_len(on); | |
3969 | const struct ofpact *inner; | |
3970 | ||
3971 | /* Maintain actset_output depending on the contents of the action set: | |
3972 | * | |
3973 | * - OFPP_UNSET, if there is no "output" action. | |
3974 | * | |
3975 | * - The output port, if there is an "output" action and no "group" | |
3976 | * action. | |
3977 | * | |
3978 | * - OFPP_UNSET, if there is a "group" action. | |
3979 | */ | |
3980 | if (!ctx->action_set_has_group) { | |
3981 | OFPACT_FOR_EACH (inner, on->actions, on_len) { | |
3982 | if (inner->type == OFPACT_OUTPUT) { | |
3983 | ctx->xin->flow.actset_output = ofpact_get_OUTPUT(inner)->port; | |
3984 | } else if (inner->type == OFPACT_GROUP) { | |
3985 | ctx->xin->flow.actset_output = OFPP_UNSET; | |
3986 | ctx->action_set_has_group = true; | |
9055ca9a | 3987 | break; |
c61f3870 BP |
3988 | } |
3989 | } | |
3990 | } | |
3991 | ||
3992 | ofpbuf_put(&ctx->action_set, on->actions, on_len); | |
7fdb60a7 SH |
3993 | ofpact_pad(&ctx->action_set); |
3994 | } | |
3995 | ||
3996 | static void | |
3997 | xlate_action_set(struct xlate_ctx *ctx) | |
3998 | { | |
3999 | uint64_t action_list_stub[1024 / 64]; | |
4000 | struct ofpbuf action_list; | |
4001 | ||
029ca940 | 4002 | ctx->in_action_set = true; |
7fdb60a7 SH |
4003 | ofpbuf_use_stub(&action_list, action_list_stub, sizeof action_list_stub); |
4004 | ofpacts_execute_action_set(&action_list, &ctx->action_set); | |
ed9c9e3e JR |
4005 | /* Clear the action set, as it is not needed any more. */ |
4006 | ofpbuf_clear(&ctx->action_set); | |
6fd6ed71 | 4007 | do_xlate_actions(action_list.data, action_list.size, ctx); |
029ca940 | 4008 | ctx->in_action_set = false; |
7fdb60a7 SH |
4009 | ofpbuf_uninit(&action_list); |
4010 | } | |
4011 | ||
e672ff9b JR |
4012 | static void |
4013 | recirc_put_unroll_xlate(struct xlate_ctx *ctx) | |
4014 | { | |
4015 | struct ofpact_unroll_xlate *unroll; | |
4016 | ||
4017 | unroll = ctx->last_unroll_offset < 0 | |
4018 | ? NULL | |
4019 | : ALIGNED_CAST(struct ofpact_unroll_xlate *, | |
4020 | (char *)ctx->action_set.data + ctx->last_unroll_offset); | |
4021 | ||
4022 | /* Restore the table_id and rule cookie for a potential PACKET | |
4023 | * IN if needed. */ | |
4024 | if (!unroll || | |
4025 | (ctx->table_id != unroll->rule_table_id | |
4026 | || ctx->rule_cookie != unroll->rule_cookie)) { | |
4027 | ||
4028 | ctx->last_unroll_offset = ctx->action_set.size; | |
4029 | unroll = ofpact_put_UNROLL_XLATE(&ctx->action_set); | |
4030 | unroll->rule_table_id = ctx->table_id; | |
4031 | unroll->rule_cookie = ctx->rule_cookie; | |
4032 | } | |
4033 | } | |
4034 | ||
4035 | ||
4036 | /* Copy remaining actions to the action_set to be executed after recirculation. | |
4037 | * UNROLL_XLATE action is inserted, if not already done so, before actions that | |
4038 | * may generate PACKET_INs from the current table and without matching another | |
4039 | * rule. */ | |
4040 | static void | |
4041 | recirc_unroll_actions(const struct ofpact *ofpacts, size_t ofpacts_len, | |
4042 | struct xlate_ctx *ctx) | |
4043 | { | |
4044 | const struct ofpact *a; | |
4045 | ||
4046 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
4047 | switch (a->type) { | |
4048 | /* May generate PACKET INs. */ | |
4049 | case OFPACT_OUTPUT_REG: | |
4050 | case OFPACT_GROUP: | |
4051 | case OFPACT_OUTPUT: | |
4052 | case OFPACT_CONTROLLER: | |
4053 | case OFPACT_DEC_MPLS_TTL: | |
4054 | case OFPACT_DEC_TTL: | |
4055 | recirc_put_unroll_xlate(ctx); | |
4056 | break; | |
4057 | ||
4058 | /* These may not generate PACKET INs. */ | |
4059 | case OFPACT_SET_TUNNEL: | |
4060 | case OFPACT_REG_MOVE: | |
4061 | case OFPACT_SET_FIELD: | |
4062 | case OFPACT_STACK_PUSH: | |
4063 | case OFPACT_STACK_POP: | |
4064 | case OFPACT_LEARN: | |
4065 | case OFPACT_WRITE_METADATA: | |
4066 | case OFPACT_RESUBMIT: /* May indirectly generate PACKET INs, */ | |
4067 | case OFPACT_GOTO_TABLE: /* but from a different table and rule. */ | |
4068 | case OFPACT_ENQUEUE: | |
4069 | case OFPACT_SET_VLAN_VID: | |
4070 | case OFPACT_SET_VLAN_PCP: | |
4071 | case OFPACT_STRIP_VLAN: | |
4072 | case OFPACT_PUSH_VLAN: | |
4073 | case OFPACT_SET_ETH_SRC: | |
4074 | case OFPACT_SET_ETH_DST: | |
4075 | case OFPACT_SET_IPV4_SRC: | |
4076 | case OFPACT_SET_IPV4_DST: | |
4077 | case OFPACT_SET_IP_DSCP: | |
4078 | case OFPACT_SET_IP_ECN: | |
4079 | case OFPACT_SET_IP_TTL: | |
4080 | case OFPACT_SET_L4_SRC_PORT: | |
4081 | case OFPACT_SET_L4_DST_PORT: | |
4082 | case OFPACT_SET_QUEUE: | |
4083 | case OFPACT_POP_QUEUE: | |
4084 | case OFPACT_PUSH_MPLS: | |
4085 | case OFPACT_POP_MPLS: | |
4086 | case OFPACT_SET_MPLS_LABEL: | |
4087 | case OFPACT_SET_MPLS_TC: | |
4088 | case OFPACT_SET_MPLS_TTL: | |
4089 | case OFPACT_MULTIPATH: | |
4090 | case OFPACT_BUNDLE: | |
4091 | case OFPACT_EXIT: | |
4092 | case OFPACT_UNROLL_XLATE: | |
4093 | case OFPACT_FIN_TIMEOUT: | |
4094 | case OFPACT_CLEAR_ACTIONS: | |
4095 | case OFPACT_WRITE_ACTIONS: | |
4096 | case OFPACT_METER: | |
4097 | case OFPACT_SAMPLE: | |
d4abaff5 | 4098 | case OFPACT_DEBUG_RECIRC: |
e672ff9b JR |
4099 | break; |
4100 | ||
4101 | /* These need not be copied for restoration. */ | |
4102 | case OFPACT_NOTE: | |
4103 | case OFPACT_CONJUNCTION: | |
4104 | continue; | |
4105 | } | |
4106 | /* Copy the action over. */ | |
4107 | ofpbuf_put(&ctx->action_set, a, OFPACT_ALIGN(a->len)); | |
4108 | } | |
4109 | } | |
4110 | ||
1d741d6d JR |
4111 | #define CHECK_MPLS_RECIRCULATION() \ |
4112 | if (ctx->was_mpls) { \ | |
4113 | ctx_trigger_recirculation(ctx); \ | |
4114 | break; \ | |
4115 | } | |
4116 | #define CHECK_MPLS_RECIRCULATION_IF(COND) \ | |
4117 | if (COND) { \ | |
4118 | CHECK_MPLS_RECIRCULATION(); \ | |
4119 | } | |
4120 | ||
9583bc14 EJ |
4121 | static void |
4122 | do_xlate_actions(const struct ofpact *ofpacts, size_t ofpacts_len, | |
4123 | struct xlate_ctx *ctx) | |
4124 | { | |
49a73e0c | 4125 | struct flow_wildcards *wc = ctx->wc; |
33bf9176 | 4126 | struct flow *flow = &ctx->xin->flow; |
9583bc14 EJ |
4127 | const struct ofpact *a; |
4128 | ||
a36de779 PS |
4129 | if (ovs_native_tunneling_is_on(ctx->xbridge->ofproto)) { |
4130 | tnl_arp_snoop(flow, wc, ctx->xbridge->name); | |
4131 | } | |
f47ea021 JR |
4132 | /* dl_type already in the mask, not set below. */ |
4133 | ||
9583bc14 EJ |
4134 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { |
4135 | struct ofpact_controller *controller; | |
4136 | const struct ofpact_metadata *metadata; | |
b2dd70be JR |
4137 | const struct ofpact_set_field *set_field; |
4138 | const struct mf_field *mf; | |
9583bc14 | 4139 | |
e672ff9b JR |
4140 | if (ctx->exit) { |
4141 | /* Check if need to store the remaining actions for later | |
4142 | * execution. */ | |
4143 | if (exit_recirculates(ctx)) { | |
4144 | recirc_unroll_actions(a, OFPACT_ALIGN(ofpacts_len - | |
4145 | ((uint8_t *)a - | |
4146 | (uint8_t *)ofpacts)), | |
4147 | ctx); | |
4148 | } | |
4149 | break; | |
7bbdd84f SH |
4150 | } |
4151 | ||
9583bc14 EJ |
4152 | switch (a->type) { |
4153 | case OFPACT_OUTPUT: | |
4154 | xlate_output_action(ctx, ofpact_get_OUTPUT(a)->port, | |
4155 | ofpact_get_OUTPUT(a)->max_len, true); | |
4156 | break; | |
4157 | ||
7395c052 | 4158 | case OFPACT_GROUP: |
f4fb341b | 4159 | if (xlate_group_action(ctx, ofpact_get_GROUP(a)->group_id)) { |
1d741d6d | 4160 | /* Group could not be found. */ |
f4fb341b SH |
4161 | return; |
4162 | } | |
7395c052 NZ |
4163 | break; |
4164 | ||
9583bc14 EJ |
4165 | case OFPACT_CONTROLLER: |
4166 | controller = ofpact_get_CONTROLLER(a); | |
4167 | execute_controller_action(ctx, controller->max_len, | |
4168 | controller->reason, | |
4169 | controller->controller_id); | |
4170 | break; | |
4171 | ||
4172 | case OFPACT_ENQUEUE: | |
16194afd DDP |
4173 | memset(&wc->masks.skb_priority, 0xff, |
4174 | sizeof wc->masks.skb_priority); | |
9583bc14 EJ |
4175 | xlate_enqueue_action(ctx, ofpact_get_ENQUEUE(a)); |
4176 | break; | |
4177 | ||
4178 | case OFPACT_SET_VLAN_VID: | |
f74e7df7 | 4179 | wc->masks.vlan_tci |= htons(VLAN_VID_MASK | VLAN_CFI); |
ca287d20 JR |
4180 | if (flow->vlan_tci & htons(VLAN_CFI) || |
4181 | ofpact_get_SET_VLAN_VID(a)->push_vlan_if_needed) { | |
4182 | flow->vlan_tci &= ~htons(VLAN_VID_MASK); | |
4183 | flow->vlan_tci |= (htons(ofpact_get_SET_VLAN_VID(a)->vlan_vid) | |
4184 | | htons(VLAN_CFI)); | |
4185 | } | |
9583bc14 EJ |
4186 | break; |
4187 | ||
4188 | case OFPACT_SET_VLAN_PCP: | |
f74e7df7 | 4189 | wc->masks.vlan_tci |= htons(VLAN_PCP_MASK | VLAN_CFI); |
ca287d20 JR |
4190 | if (flow->vlan_tci & htons(VLAN_CFI) || |
4191 | ofpact_get_SET_VLAN_PCP(a)->push_vlan_if_needed) { | |
4192 | flow->vlan_tci &= ~htons(VLAN_PCP_MASK); | |
4193 | flow->vlan_tci |= htons((ofpact_get_SET_VLAN_PCP(a)->vlan_pcp | |
4194 | << VLAN_PCP_SHIFT) | VLAN_CFI); | |
4195 | } | |
9583bc14 EJ |
4196 | break; |
4197 | ||
4198 | case OFPACT_STRIP_VLAN: | |
f74e7df7 | 4199 | memset(&wc->masks.vlan_tci, 0xff, sizeof wc->masks.vlan_tci); |
33bf9176 | 4200 | flow->vlan_tci = htons(0); |
9583bc14 EJ |
4201 | break; |
4202 | ||
4203 | case OFPACT_PUSH_VLAN: | |
4204 | /* XXX 802.1AD(QinQ) */ | |
f74e7df7 | 4205 | memset(&wc->masks.vlan_tci, 0xff, sizeof wc->masks.vlan_tci); |
33bf9176 | 4206 | flow->vlan_tci = htons(VLAN_CFI); |
9583bc14 EJ |
4207 | break; |
4208 | ||
4209 | case OFPACT_SET_ETH_SRC: | |
74ff3298 JR |
4210 | WC_MASK_FIELD(wc, dl_src); |
4211 | flow->dl_src = ofpact_get_SET_ETH_SRC(a)->mac; | |
9583bc14 EJ |
4212 | break; |
4213 | ||
4214 | case OFPACT_SET_ETH_DST: | |
74ff3298 JR |
4215 | WC_MASK_FIELD(wc, dl_dst); |
4216 | flow->dl_dst = ofpact_get_SET_ETH_DST(a)->mac; | |
9583bc14 EJ |
4217 | break; |
4218 | ||
4219 | case OFPACT_SET_IPV4_SRC: | |
1d741d6d | 4220 | CHECK_MPLS_RECIRCULATION(); |
33bf9176 | 4221 | if (flow->dl_type == htons(ETH_TYPE_IP)) { |
f47ea021 | 4222 | memset(&wc->masks.nw_src, 0xff, sizeof wc->masks.nw_src); |
33bf9176 | 4223 | flow->nw_src = ofpact_get_SET_IPV4_SRC(a)->ipv4; |
9583bc14 EJ |
4224 | } |
4225 | break; | |
4226 | ||
4227 | case OFPACT_SET_IPV4_DST: | |
1d741d6d | 4228 | CHECK_MPLS_RECIRCULATION(); |
33bf9176 | 4229 | if (flow->dl_type == htons(ETH_TYPE_IP)) { |
f47ea021 | 4230 | memset(&wc->masks.nw_dst, 0xff, sizeof wc->masks.nw_dst); |
33bf9176 | 4231 | flow->nw_dst = ofpact_get_SET_IPV4_DST(a)->ipv4; |
9583bc14 EJ |
4232 | } |
4233 | break; | |
4234 | ||
04f01c24 | 4235 | case OFPACT_SET_IP_DSCP: |
1d741d6d | 4236 | CHECK_MPLS_RECIRCULATION(); |
04f01c24 | 4237 | if (is_ip_any(flow)) { |
f47ea021 | 4238 | wc->masks.nw_tos |= IP_DSCP_MASK; |
33bf9176 | 4239 | flow->nw_tos &= ~IP_DSCP_MASK; |
04f01c24 | 4240 | flow->nw_tos |= ofpact_get_SET_IP_DSCP(a)->dscp; |
9583bc14 EJ |
4241 | } |
4242 | break; | |
4243 | ||
ff14eb7a | 4244 | case OFPACT_SET_IP_ECN: |
1d741d6d | 4245 | CHECK_MPLS_RECIRCULATION(); |
ff14eb7a JR |
4246 | if (is_ip_any(flow)) { |
4247 | wc->masks.nw_tos |= IP_ECN_MASK; | |
4248 | flow->nw_tos &= ~IP_ECN_MASK; | |
4249 | flow->nw_tos |= ofpact_get_SET_IP_ECN(a)->ecn; | |
4250 | } | |
4251 | break; | |
4252 | ||
0c20dbe4 | 4253 | case OFPACT_SET_IP_TTL: |
1d741d6d | 4254 | CHECK_MPLS_RECIRCULATION(); |
0c20dbe4 JR |
4255 | if (is_ip_any(flow)) { |
4256 | wc->masks.nw_ttl = 0xff; | |
4257 | flow->nw_ttl = ofpact_get_SET_IP_TTL(a)->ttl; | |
4258 | } | |
4259 | break; | |
4260 | ||
9583bc14 | 4261 | case OFPACT_SET_L4_SRC_PORT: |
1d741d6d | 4262 | CHECK_MPLS_RECIRCULATION(); |
b8778a0d | 4263 | if (is_ip_any(flow) && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) { |
f47ea021 JR |
4264 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); |
4265 | memset(&wc->masks.tp_src, 0xff, sizeof wc->masks.tp_src); | |
33bf9176 | 4266 | flow->tp_src = htons(ofpact_get_SET_L4_SRC_PORT(a)->port); |
9583bc14 EJ |
4267 | } |
4268 | break; | |
4269 | ||
4270 | case OFPACT_SET_L4_DST_PORT: | |
1d741d6d | 4271 | CHECK_MPLS_RECIRCULATION(); |
b8778a0d | 4272 | if (is_ip_any(flow) && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) { |
f47ea021 JR |
4273 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); |
4274 | memset(&wc->masks.tp_dst, 0xff, sizeof wc->masks.tp_dst); | |
33bf9176 | 4275 | flow->tp_dst = htons(ofpact_get_SET_L4_DST_PORT(a)->port); |
9583bc14 EJ |
4276 | } |
4277 | break; | |
4278 | ||
4279 | case OFPACT_RESUBMIT: | |
4280 | xlate_ofpact_resubmit(ctx, ofpact_get_RESUBMIT(a)); | |
4281 | break; | |
4282 | ||
4283 | case OFPACT_SET_TUNNEL: | |
33bf9176 | 4284 | flow->tunnel.tun_id = htonll(ofpact_get_SET_TUNNEL(a)->tun_id); |
9583bc14 EJ |
4285 | break; |
4286 | ||
4287 | case OFPACT_SET_QUEUE: | |
16194afd DDP |
4288 | memset(&wc->masks.skb_priority, 0xff, |
4289 | sizeof wc->masks.skb_priority); | |
9583bc14 EJ |
4290 | xlate_set_queue_action(ctx, ofpact_get_SET_QUEUE(a)->queue_id); |
4291 | break; | |
4292 | ||
4293 | case OFPACT_POP_QUEUE: | |
16194afd DDP |
4294 | memset(&wc->masks.skb_priority, 0xff, |
4295 | sizeof wc->masks.skb_priority); | |
33bf9176 | 4296 | flow->skb_priority = ctx->orig_skb_priority; |
9583bc14 EJ |
4297 | break; |
4298 | ||
4299 | case OFPACT_REG_MOVE: | |
1d741d6d JR |
4300 | CHECK_MPLS_RECIRCULATION_IF( |
4301 | mf_is_l3_or_higher(ofpact_get_REG_MOVE(a)->dst.field) || | |
4302 | mf_is_l3_or_higher(ofpact_get_REG_MOVE(a)->src.field)); | |
33bf9176 | 4303 | nxm_execute_reg_move(ofpact_get_REG_MOVE(a), flow, wc); |
9583bc14 EJ |
4304 | break; |
4305 | ||
b2dd70be | 4306 | case OFPACT_SET_FIELD: |
1d741d6d JR |
4307 | CHECK_MPLS_RECIRCULATION_IF( |
4308 | mf_is_l3_or_higher(ofpact_get_SET_FIELD(a)->field)); | |
b2dd70be JR |
4309 | set_field = ofpact_get_SET_FIELD(a); |
4310 | mf = set_field->field; | |
b2dd70be JR |
4311 | |
4312 | /* Set field action only ever overwrites packet's outermost | |
4313 | * applicable header fields. Do nothing if no header exists. */ | |
4479846e JR |
4314 | if (mf->id == MFF_VLAN_VID) { |
4315 | wc->masks.vlan_tci |= htons(VLAN_CFI); | |
4316 | if (!(flow->vlan_tci & htons(VLAN_CFI))) { | |
4317 | break; | |
4318 | } | |
4319 | } else if ((mf->id == MFF_MPLS_LABEL || mf->id == MFF_MPLS_TC) | |
4320 | /* 'dl_type' is already unwildcarded. */ | |
4321 | && !eth_type_mpls(flow->dl_type)) { | |
4322 | break; | |
b2dd70be | 4323 | } |
b8778a0d JR |
4324 | /* A flow may wildcard nw_frag. Do nothing if setting a trasport |
4325 | * header field on a packet that does not have them. */ | |
5e2e998a | 4326 | mf_mask_field_and_prereqs(mf, wc); |
b8778a0d JR |
4327 | if (mf_are_prereqs_ok(mf, flow)) { |
4328 | mf_set_flow_value_masked(mf, &set_field->value, | |
4329 | &set_field->mask, flow); | |
4330 | } | |
b2dd70be JR |
4331 | break; |
4332 | ||
9583bc14 | 4333 | case OFPACT_STACK_PUSH: |
1d741d6d JR |
4334 | CHECK_MPLS_RECIRCULATION_IF( |
4335 | mf_is_l3_or_higher(ofpact_get_STACK_PUSH(a)->subfield.field)); | |
33bf9176 BP |
4336 | nxm_execute_stack_push(ofpact_get_STACK_PUSH(a), flow, wc, |
4337 | &ctx->stack); | |
9583bc14 EJ |
4338 | break; |
4339 | ||
4340 | case OFPACT_STACK_POP: | |
1d741d6d JR |
4341 | CHECK_MPLS_RECIRCULATION_IF( |
4342 | mf_is_l3_or_higher(ofpact_get_STACK_POP(a)->subfield.field)); | |
f74e7df7 JP |
4343 | nxm_execute_stack_pop(ofpact_get_STACK_POP(a), flow, wc, |
4344 | &ctx->stack); | |
9583bc14 EJ |
4345 | break; |
4346 | ||
4347 | case OFPACT_PUSH_MPLS: | |
1d741d6d JR |
4348 | /* Recirculate if it is an IP packet with a zero ttl. This may |
4349 | * indicate that the packet was previously MPLS and an MPLS pop | |
4350 | * action converted it to IP. In this case recirculating should | |
4351 | * reveal the IP TTL which is used as the basis for a new MPLS | |
4352 | * LSE. */ | |
4353 | CHECK_MPLS_RECIRCULATION_IF( | |
4354 | !flow_count_mpls_labels(flow, wc) | |
4355 | && flow->nw_ttl == 0 | |
4356 | && is_ip_any(flow)); | |
8bfd0fda | 4357 | compose_mpls_push_action(ctx, ofpact_get_PUSH_MPLS(a)); |
9583bc14 EJ |
4358 | break; |
4359 | ||
4360 | case OFPACT_POP_MPLS: | |
1d741d6d | 4361 | CHECK_MPLS_RECIRCULATION(); |
8bfd0fda | 4362 | compose_mpls_pop_action(ctx, ofpact_get_POP_MPLS(a)->ethertype); |
9583bc14 EJ |
4363 | break; |
4364 | ||
097d4939 | 4365 | case OFPACT_SET_MPLS_LABEL: |
1d741d6d | 4366 | CHECK_MPLS_RECIRCULATION(); |
8bfd0fda BP |
4367 | compose_set_mpls_label_action( |
4368 | ctx, ofpact_get_SET_MPLS_LABEL(a)->label); | |
1d741d6d | 4369 | break; |
097d4939 JR |
4370 | |
4371 | case OFPACT_SET_MPLS_TC: | |
1d741d6d | 4372 | CHECK_MPLS_RECIRCULATION(); |
8bfd0fda | 4373 | compose_set_mpls_tc_action(ctx, ofpact_get_SET_MPLS_TC(a)->tc); |
097d4939 JR |
4374 | break; |
4375 | ||
9583bc14 | 4376 | case OFPACT_SET_MPLS_TTL: |
1d741d6d | 4377 | CHECK_MPLS_RECIRCULATION(); |
8bfd0fda | 4378 | compose_set_mpls_ttl_action(ctx, ofpact_get_SET_MPLS_TTL(a)->ttl); |
9583bc14 EJ |
4379 | break; |
4380 | ||
4381 | case OFPACT_DEC_MPLS_TTL: | |
1d741d6d | 4382 | CHECK_MPLS_RECIRCULATION(); |
9cfef3d0 | 4383 | if (compose_dec_mpls_ttl_action(ctx)) { |
ad3efdcb | 4384 | return; |
9583bc14 EJ |
4385 | } |
4386 | break; | |
4387 | ||
4388 | case OFPACT_DEC_TTL: | |
1d741d6d | 4389 | CHECK_MPLS_RECIRCULATION(); |
f74e7df7 | 4390 | wc->masks.nw_ttl = 0xff; |
9583bc14 | 4391 | if (compose_dec_ttl(ctx, ofpact_get_DEC_TTL(a))) { |
ad3efdcb | 4392 | return; |
9583bc14 EJ |
4393 | } |
4394 | break; | |
4395 | ||
4396 | case OFPACT_NOTE: | |
4397 | /* Nothing to do. */ | |
4398 | break; | |
4399 | ||
4400 | case OFPACT_MULTIPATH: | |
1d741d6d | 4401 | CHECK_MPLS_RECIRCULATION(); |
33bf9176 | 4402 | multipath_execute(ofpact_get_MULTIPATH(a), flow, wc); |
9583bc14 EJ |
4403 | break; |
4404 | ||
4405 | case OFPACT_BUNDLE: | |
1d741d6d | 4406 | CHECK_MPLS_RECIRCULATION(); |
9583bc14 EJ |
4407 | xlate_bundle_action(ctx, ofpact_get_BUNDLE(a)); |
4408 | break; | |
4409 | ||
4410 | case OFPACT_OUTPUT_REG: | |
4411 | xlate_output_reg_action(ctx, ofpact_get_OUTPUT_REG(a)); | |
4412 | break; | |
4413 | ||
4414 | case OFPACT_LEARN: | |
1d741d6d | 4415 | CHECK_MPLS_RECIRCULATION(); |
9583bc14 EJ |
4416 | xlate_learn_action(ctx, ofpact_get_LEARN(a)); |
4417 | break; | |
4418 | ||
afc3987b BP |
4419 | case OFPACT_CONJUNCTION: { |
4420 | /* A flow with a "conjunction" action represents part of a special | |
4421 | * kind of "set membership match". Such a flow should not actually | |
4422 | * get executed, but it could via, say, a "packet-out", even though | |
4423 | * that wouldn't be useful. Log it to help debugging. */ | |
4424 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); | |
4425 | VLOG_INFO_RL(&rl, "executing no-op conjunction action"); | |
18080541 | 4426 | break; |
afc3987b | 4427 | } |
18080541 | 4428 | |
9583bc14 EJ |
4429 | case OFPACT_EXIT: |
4430 | ctx->exit = true; | |
4431 | break; | |
4432 | ||
e672ff9b JR |
4433 | case OFPACT_UNROLL_XLATE: { |
4434 | struct ofpact_unroll_xlate *unroll = ofpact_get_UNROLL_XLATE(a); | |
4435 | ||
4436 | /* Restore translation context data that was stored earlier. */ | |
4437 | ctx->table_id = unroll->rule_table_id; | |
4438 | ctx->rule_cookie = unroll->rule_cookie; | |
4439 | break; | |
4440 | } | |
9583bc14 | 4441 | case OFPACT_FIN_TIMEOUT: |
1d741d6d | 4442 | CHECK_MPLS_RECIRCULATION(); |
33bf9176 | 4443 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); |
9583bc14 EJ |
4444 | xlate_fin_timeout(ctx, ofpact_get_FIN_TIMEOUT(a)); |
4445 | break; | |
4446 | ||
4447 | case OFPACT_CLEAR_ACTIONS: | |
7fdb60a7 | 4448 | ofpbuf_clear(&ctx->action_set); |
c61f3870 BP |
4449 | ctx->xin->flow.actset_output = OFPP_UNSET; |
4450 | ctx->action_set_has_group = false; | |
7fdb60a7 SH |
4451 | break; |
4452 | ||
4453 | case OFPACT_WRITE_ACTIONS: | |
4454 | xlate_write_actions(ctx, a); | |
9583bc14 EJ |
4455 | break; |
4456 | ||
4457 | case OFPACT_WRITE_METADATA: | |
4458 | metadata = ofpact_get_WRITE_METADATA(a); | |
33bf9176 BP |
4459 | flow->metadata &= ~metadata->mask; |
4460 | flow->metadata |= metadata->metadata & metadata->mask; | |
9583bc14 EJ |
4461 | break; |
4462 | ||
638a19b0 JR |
4463 | case OFPACT_METER: |
4464 | /* Not implemented yet. */ | |
4465 | break; | |
4466 | ||
9583bc14 | 4467 | case OFPACT_GOTO_TABLE: { |
9583bc14 | 4468 | struct ofpact_goto_table *ogt = ofpact_get_GOTO_TABLE(a); |
9583bc14 | 4469 | |
7bbdd84f SH |
4470 | /* Allow ctx->table_id == TBL_INTERNAL, which will be greater |
4471 | * than ogt->table_id. This is to allow goto_table actions that | |
4472 | * triggered recirculation: ctx->table_id will be TBL_INTERNAL | |
4473 | * after recirculation. */ | |
4474 | ovs_assert(ctx->table_id == TBL_INTERNAL | |
4475 | || ctx->table_id < ogt->table_id); | |
4468099e | 4476 | xlate_table_action(ctx, ctx->xin->flow.in_port.ofp_port, |
6d328fa2 | 4477 | ogt->table_id, true, true); |
9583bc14 EJ |
4478 | break; |
4479 | } | |
4480 | ||
4481 | case OFPACT_SAMPLE: | |
4482 | xlate_sample_action(ctx, ofpact_get_SAMPLE(a)); | |
4483 | break; | |
d4abaff5 BP |
4484 | |
4485 | case OFPACT_DEBUG_RECIRC: | |
4486 | ctx_trigger_recirculation(ctx); | |
4487 | a = ofpact_next(a); | |
4488 | break; | |
9583bc14 | 4489 | } |
1d741d6d JR |
4490 | |
4491 | /* Check if need to store this and the remaining actions for later | |
4492 | * execution. */ | |
4493 | if (ctx->exit && ctx_first_recirculation_action(ctx)) { | |
4494 | recirc_unroll_actions(a, OFPACT_ALIGN(ofpacts_len - | |
4495 | ((uint8_t *)a - | |
4496 | (uint8_t *)ofpacts)), | |
4497 | ctx); | |
4498 | break; | |
4499 | } | |
9583bc14 | 4500 | } |
9583bc14 EJ |
4501 | } |
4502 | ||
4503 | void | |
4504 | xlate_in_init(struct xlate_in *xin, struct ofproto_dpif *ofproto, | |
cc377352 EJ |
4505 | const struct flow *flow, ofp_port_t in_port, |
4506 | struct rule_dpif *rule, uint16_t tcp_flags, | |
1520ef4f BP |
4507 | const struct dp_packet *packet, struct flow_wildcards *wc, |
4508 | struct ofpbuf *odp_actions) | |
9583bc14 EJ |
4509 | { |
4510 | xin->ofproto = ofproto; | |
4511 | xin->flow = *flow; | |
cc377352 | 4512 | xin->flow.in_port.ofp_port = in_port; |
c61f3870 | 4513 | xin->flow.actset_output = OFPP_UNSET; |
9583bc14 EJ |
4514 | xin->packet = packet; |
4515 | xin->may_learn = packet != NULL; | |
4516 | xin->rule = rule; | |
b256dc52 | 4517 | xin->xcache = NULL; |
9583bc14 EJ |
4518 | xin->ofpacts = NULL; |
4519 | xin->ofpacts_len = 0; | |
4520 | xin->tcp_flags = tcp_flags; | |
4521 | xin->resubmit_hook = NULL; | |
4522 | xin->report_hook = NULL; | |
4523 | xin->resubmit_stats = NULL; | |
cdd42eda JG |
4524 | xin->recurse = 0; |
4525 | xin->resubmits = 0; | |
49a73e0c | 4526 | xin->wc = wc; |
1520ef4f | 4527 | xin->odp_actions = odp_actions; |
e672ff9b JR |
4528 | |
4529 | /* Do recirc lookup. */ | |
4530 | xin->recirc = flow->recirc_id | |
4531 | ? recirc_id_node_find(flow->recirc_id) | |
4532 | : NULL; | |
9583bc14 EJ |
4533 | } |
4534 | ||
4535 | void | |
4536 | xlate_out_uninit(struct xlate_out *xout) | |
4537 | { | |
e672ff9b | 4538 | if (xout) { |
e672ff9b | 4539 | xlate_out_free_recircs(xout); |
9583bc14 EJ |
4540 | } |
4541 | } | |
4542 | ||
4543 | /* Translates the 'ofpacts_len' bytes of "struct ofpact"s starting at 'ofpacts' | |
4544 | * into datapath actions, using 'ctx', and discards the datapath actions. */ | |
4545 | void | |
4546 | xlate_actions_for_side_effects(struct xlate_in *xin) | |
4547 | { | |
4548 | struct xlate_out xout; | |
4549 | ||
4550 | xlate_actions(xin, &xout); | |
4551 | xlate_out_uninit(&xout); | |
4552 | } | |
9583bc14 | 4553 | \f |
55954f6e EJ |
4554 | static struct skb_priority_to_dscp * |
4555 | get_skb_priority(const struct xport *xport, uint32_t skb_priority) | |
4556 | { | |
4557 | struct skb_priority_to_dscp *pdscp; | |
4558 | uint32_t hash; | |
4559 | ||
4560 | hash = hash_int(skb_priority, 0); | |
4561 | HMAP_FOR_EACH_IN_BUCKET (pdscp, hmap_node, hash, &xport->skb_priorities) { | |
4562 | if (pdscp->skb_priority == skb_priority) { | |
4563 | return pdscp; | |
4564 | } | |
4565 | } | |
4566 | return NULL; | |
4567 | } | |
4568 | ||
4569 | static bool | |
4570 | dscp_from_skb_priority(const struct xport *xport, uint32_t skb_priority, | |
4571 | uint8_t *dscp) | |
4572 | { | |
4573 | struct skb_priority_to_dscp *pdscp = get_skb_priority(xport, skb_priority); | |
4574 | *dscp = pdscp ? pdscp->dscp : 0; | |
4575 | return pdscp != NULL; | |
4576 | } | |
4577 | ||
16194afd DDP |
4578 | static size_t |
4579 | count_skb_priorities(const struct xport *xport) | |
4580 | { | |
4581 | return hmap_count(&xport->skb_priorities); | |
4582 | } | |
4583 | ||
55954f6e EJ |
4584 | static void |
4585 | clear_skb_priorities(struct xport *xport) | |
4586 | { | |
4587 | struct skb_priority_to_dscp *pdscp, *next; | |
4588 | ||
4589 | HMAP_FOR_EACH_SAFE (pdscp, next, hmap_node, &xport->skb_priorities) { | |
4590 | hmap_remove(&xport->skb_priorities, &pdscp->hmap_node); | |
4591 | free(pdscp); | |
4592 | } | |
4593 | } | |
4594 | ||
ce4a6b76 BP |
4595 | static bool |
4596 | actions_output_to_local_port(const struct xlate_ctx *ctx) | |
4597 | { | |
46c88433 | 4598 | odp_port_t local_odp_port = ofp_port_to_odp_port(ctx->xbridge, OFPP_LOCAL); |
ce4a6b76 BP |
4599 | const struct nlattr *a; |
4600 | unsigned int left; | |
4601 | ||
1520ef4f BP |
4602 | NL_ATTR_FOR_EACH_UNSAFE (a, left, ctx->odp_actions->data, |
4603 | ctx->odp_actions->size) { | |
ce4a6b76 BP |
4604 | if (nl_attr_type(a) == OVS_ACTION_ATTR_OUTPUT |
4605 | && nl_attr_get_odp_port(a) == local_odp_port) { | |
4606 | return true; | |
4607 | } | |
4608 | } | |
4609 | return false; | |
4610 | } | |
9583bc14 | 4611 | |
5e2a6702 | 4612 | #if defined(__linux__) |
7d031d7e BP |
4613 | /* Returns the maximum number of packets that the Linux kernel is willing to |
4614 | * queue up internally to certain kinds of software-implemented ports, or the | |
4615 | * default (and rarely modified) value if it cannot be determined. */ | |
4616 | static int | |
4617 | netdev_max_backlog(void) | |
4618 | { | |
4619 | static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER; | |
4620 | static int max_backlog = 1000; /* The normal default value. */ | |
4621 | ||
4622 | if (ovsthread_once_start(&once)) { | |
4623 | static const char filename[] = "/proc/sys/net/core/netdev_max_backlog"; | |
4624 | FILE *stream; | |
4625 | int n; | |
4626 | ||
4627 | stream = fopen(filename, "r"); | |
4628 | if (!stream) { | |
120c348f | 4629 | VLOG_INFO("%s: open failed (%s)", filename, ovs_strerror(errno)); |
7d031d7e BP |
4630 | } else { |
4631 | if (fscanf(stream, "%d", &n) != 1) { | |
4632 | VLOG_WARN("%s: read error", filename); | |
4633 | } else if (n <= 100) { | |
4634 | VLOG_WARN("%s: unexpectedly small value %d", filename, n); | |
4635 | } else { | |
4636 | max_backlog = n; | |
4637 | } | |
4638 | fclose(stream); | |
4639 | } | |
4640 | ovsthread_once_done(&once); | |
4641 | ||
4642 | VLOG_DBG("%s: using %d max_backlog", filename, max_backlog); | |
4643 | } | |
4644 | ||
4645 | return max_backlog; | |
4646 | } | |
4647 | ||
4648 | /* Counts and returns the number of OVS_ACTION_ATTR_OUTPUT actions in | |
4649 | * 'odp_actions'. */ | |
4650 | static int | |
4651 | count_output_actions(const struct ofpbuf *odp_actions) | |
4652 | { | |
4653 | const struct nlattr *a; | |
4654 | size_t left; | |
4655 | int n = 0; | |
4656 | ||
6fd6ed71 | 4657 | NL_ATTR_FOR_EACH_UNSAFE (a, left, odp_actions->data, odp_actions->size) { |
7d031d7e BP |
4658 | if (a->nla_type == OVS_ACTION_ATTR_OUTPUT) { |
4659 | n++; | |
4660 | } | |
4661 | } | |
4662 | return n; | |
4663 | } | |
5e2a6702 | 4664 | #endif /* defined(__linux__) */ |
7d031d7e BP |
4665 | |
4666 | /* Returns true if 'odp_actions' contains more output actions than the datapath | |
4667 | * can reliably handle in one go. On Linux, this is the value of the | |
4668 | * net.core.netdev_max_backlog sysctl, which limits the maximum number of | |
4669 | * packets that the kernel is willing to queue up for processing while the | |
4670 | * datapath is processing a set of actions. */ | |
4671 | static bool | |
5e2a6702 | 4672 | too_many_output_actions(const struct ofpbuf *odp_actions OVS_UNUSED) |
7d031d7e BP |
4673 | { |
4674 | #ifdef __linux__ | |
6fd6ed71 | 4675 | return (odp_actions->size / NL_A_U32_SIZE > netdev_max_backlog() |
7d031d7e BP |
4676 | && count_output_actions(odp_actions) > netdev_max_backlog()); |
4677 | #else | |
4678 | /* OSes other than Linux might have similar limits, but we don't know how | |
4679 | * to determine them.*/ | |
4680 | return false; | |
4681 | #endif | |
4682 | } | |
4683 | ||
234c3da9 BP |
4684 | static void |
4685 | xlate_wc_init(struct xlate_ctx *ctx) | |
4686 | { | |
4687 | flow_wildcards_init_catchall(ctx->wc); | |
4688 | ||
4689 | /* Some fields we consider to always be examined. */ | |
5e2e998a JR |
4690 | WC_MASK_FIELD(ctx->wc, in_port); |
4691 | WC_MASK_FIELD(ctx->wc, dl_type); | |
234c3da9 | 4692 | if (is_ip_any(&ctx->xin->flow)) { |
5e2e998a | 4693 | WC_MASK_FIELD_MASK(ctx->wc, nw_frag, FLOW_NW_FRAG_MASK); |
234c3da9 BP |
4694 | } |
4695 | ||
4696 | if (ctx->xbridge->support.odp.recirc) { | |
4697 | /* Always exactly match recirc_id when datapath supports | |
4698 | * recirculation. */ | |
5e2e998a | 4699 | WC_MASK_FIELD(ctx->wc, recirc_id); |
234c3da9 BP |
4700 | } |
4701 | ||
4702 | if (ctx->xbridge->netflow) { | |
4703 | netflow_mask_wc(&ctx->xin->flow, ctx->wc); | |
4704 | } | |
4705 | ||
4706 | tnl_wc_init(&ctx->xin->flow, ctx->wc); | |
4707 | } | |
4708 | ||
4709 | static void | |
4710 | xlate_wc_finish(struct xlate_ctx *ctx) | |
4711 | { | |
4712 | /* Clear the metadata and register wildcard masks, because we won't | |
4713 | * use non-header fields as part of the cache. */ | |
4714 | flow_wildcards_clear_non_packet_fields(ctx->wc); | |
4715 | ||
4716 | /* ICMPv4 and ICMPv6 have 8-bit "type" and "code" fields. struct flow | |
4717 | * uses the low 8 bits of the 16-bit tp_src and tp_dst members to | |
4718 | * represent these fields. The datapath interface, on the other hand, | |
4719 | * represents them with just 8 bits each. This means that if the high | |
4720 | * 8 bits of the masks for these fields somehow become set, then they | |
4721 | * will get chopped off by a round trip through the datapath, and | |
4722 | * revalidation will spot that as an inconsistency and delete the flow. | |
4723 | * Avoid the problem here by making sure that only the low 8 bits of | |
4724 | * either field can be unwildcarded for ICMP. | |
4725 | */ | |
4726 | if (is_icmpv4(&ctx->xin->flow) || is_icmpv6(&ctx->xin->flow)) { | |
4727 | ctx->wc->masks.tp_src &= htons(UINT8_MAX); | |
4728 | ctx->wc->masks.tp_dst &= htons(UINT8_MAX); | |
4729 | } | |
4730 | /* VLAN_TCI CFI bit must be matched if any of the TCI is matched. */ | |
4731 | if (ctx->wc->masks.vlan_tci) { | |
4732 | ctx->wc->masks.vlan_tci |= htons(VLAN_CFI); | |
4733 | } | |
4734 | } | |
4735 | ||
e672ff9b JR |
4736 | /* Translates the flow, actions, or rule in 'xin' into datapath actions in |
4737 | * 'xout'. | |
56450a41 BP |
4738 | * The caller must take responsibility for eventually freeing 'xout', with |
4739 | * xlate_out_uninit(). */ | |
84f0f298 RW |
4740 | void |
4741 | xlate_actions(struct xlate_in *xin, struct xlate_out *xout) | |
9583bc14 | 4742 | { |
e467ea42 BP |
4743 | *xout = (struct xlate_out) { |
4744 | .slow = 0, | |
4745 | .fail_open = false, | |
e467ea42 BP |
4746 | .n_recircs = 0, |
4747 | }; | |
4748 | ||
84f0f298 | 4749 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
bb00fdef BP |
4750 | struct xbridge *xbridge = xbridge_lookup(xcfg, xin->ofproto); |
4751 | if (!xbridge) { | |
4752 | return; | |
4753 | } | |
4754 | ||
33bf9176 BP |
4755 | struct flow *flow = &xin->flow; |
4756 | ||
bb00fdef BP |
4757 | union mf_subvalue stack_stub[1024 / sizeof(union mf_subvalue)]; |
4758 | uint64_t action_set_stub[1024 / 8]; | |
49a73e0c | 4759 | struct flow_wildcards scratch_wc; |
1520ef4f BP |
4760 | uint64_t actions_stub[256 / 8]; |
4761 | struct ofpbuf scratch_actions = OFPBUF_STUB_INITIALIZER(actions_stub); | |
bb00fdef BP |
4762 | struct xlate_ctx ctx = { |
4763 | .xin = xin, | |
4764 | .xout = xout, | |
4765 | .base_flow = *flow, | |
4766 | .orig_tunnel_ip_dst = flow->tunnel.ip_dst, | |
4767 | .xbridge = xbridge, | |
4768 | .stack = OFPBUF_STUB_INITIALIZER(stack_stub), | |
4769 | .rule = xin->rule, | |
49a73e0c | 4770 | .wc = xin->wc ? xin->wc : &scratch_wc, |
1520ef4f | 4771 | .odp_actions = xin->odp_actions ? xin->odp_actions : &scratch_actions, |
bb00fdef | 4772 | |
cdd42eda JG |
4773 | .recurse = xin->recurse, |
4774 | .resubmits = xin->resubmits, | |
bb00fdef BP |
4775 | .in_group = false, |
4776 | .in_action_set = false, | |
4777 | ||
4778 | .table_id = 0, | |
4779 | .rule_cookie = OVS_BE64_MAX, | |
4780 | .orig_skb_priority = flow->skb_priority, | |
4781 | .sflow_n_outputs = 0, | |
4782 | .sflow_odp_port = 0, | |
2031ef97 | 4783 | .nf_output_iface = NF_OUT_DROP, |
bb00fdef | 4784 | .exit = false, |
3d6151f3 | 4785 | .mirrors = 0, |
bb00fdef BP |
4786 | |
4787 | .recirc_action_offset = -1, | |
4788 | .last_unroll_offset = -1, | |
4789 | ||
4790 | .was_mpls = false, | |
4791 | ||
4792 | .action_set_has_group = false, | |
4793 | .action_set = OFPBUF_STUB_INITIALIZER(action_set_stub), | |
4794 | }; | |
865ca6cf BP |
4795 | |
4796 | /* 'base_flow' reflects the packet as it came in, but we need it to reflect | |
4797 | * the packet as the datapath will treat it for output actions: | |
4798 | * | |
4799 | * - Our datapath doesn't retain tunneling information without us | |
4800 | * re-setting it, so clear the tunnel data. | |
4801 | * | |
4802 | * - For VLAN splinters, a higher layer may pretend that the packet | |
4803 | * came in on 'flow->in_port.ofp_port' with 'flow->vlan_tci' | |
4804 | * attached, because that's how we want to treat it from an OpenFlow | |
4805 | * perspective. But from the datapath's perspective it actually came | |
4806 | * in on a VLAN device without any VLAN attached. So here we put the | |
4807 | * datapath's view of the VLAN information in 'base_flow' to ensure | |
4808 | * correct treatment. | |
4809 | */ | |
bb00fdef | 4810 | memset(&ctx.base_flow.tunnel, 0, sizeof ctx.base_flow.tunnel); |
865ca6cf BP |
4811 | if (flow->in_port.ofp_port |
4812 | != vsp_realdev_to_vlandev(xbridge->ofproto, | |
4813 | flow->in_port.ofp_port, | |
4814 | flow->vlan_tci)) { | |
4815 | ctx.base_flow.vlan_tci = 0; | |
4816 | } | |
4817 | ||
1520ef4f | 4818 | ofpbuf_reserve(ctx.odp_actions, NL_A_U32_SIZE); |
234c3da9 BP |
4819 | if (xin->wc) { |
4820 | xlate_wc_init(&ctx); | |
4821 | } | |
bb00fdef | 4822 | |
46c88433 | 4823 | COVERAGE_INC(xlate_actions); |
9583bc14 | 4824 | |
e672ff9b | 4825 | if (xin->recirc) { |
2082425c | 4826 | const struct recirc_state *state = &xin->recirc->state; |
e672ff9b | 4827 | |
d6bef3cc BP |
4828 | xlate_report(&ctx, "Restoring state post-recirculation:"); |
4829 | ||
e672ff9b JR |
4830 | if (xin->ofpacts_len > 0 || ctx.rule) { |
4831 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); | |
d6bef3cc | 4832 | const char *conflict = xin->ofpacts_len ? "actions" : "rule"; |
e672ff9b | 4833 | |
d6bef3cc BP |
4834 | VLOG_WARN_RL(&rl, "Recirculation conflict (%s)!", conflict); |
4835 | xlate_report(&ctx, "- Recirculation conflict (%s)!", conflict); | |
1520ef4f | 4836 | goto exit; |
e672ff9b JR |
4837 | } |
4838 | ||
4839 | /* Set the bridge for post-recirculation processing if needed. */ | |
2082425c | 4840 | if (ctx.xbridge->ofproto != state->ofproto) { |
e672ff9b | 4841 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
2082425c BP |
4842 | const struct xbridge *new_bridge |
4843 | = xbridge_lookup(xcfg, state->ofproto); | |
e672ff9b JR |
4844 | |
4845 | if (OVS_UNLIKELY(!new_bridge)) { | |
4846 | /* Drop the packet if the bridge cannot be found. */ | |
4847 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); | |
4848 | VLOG_WARN_RL(&rl, "Recirculation bridge no longer exists."); | |
d6bef3cc | 4849 | xlate_report(&ctx, "- Recirculation bridge no longer exists."); |
1520ef4f | 4850 | goto exit; |
e672ff9b JR |
4851 | } |
4852 | ctx.xbridge = new_bridge; | |
4853 | } | |
4854 | ||
4855 | /* Set the post-recirculation table id. Note: A table lookup is done | |
4856 | * only if there are no post-recirculation actions. */ | |
2082425c | 4857 | ctx.table_id = state->table_id; |
d6bef3cc | 4858 | xlate_report(&ctx, "- Resuming from table %"PRIu8, ctx.table_id); |
e672ff9b JR |
4859 | |
4860 | /* Restore pipeline metadata. May change flow's in_port and other | |
4861 | * metadata to the values that existed when recirculation was | |
4862 | * triggered. */ | |
2082425c | 4863 | recirc_metadata_to_flow(&state->metadata, flow); |
e672ff9b JR |
4864 | |
4865 | /* Restore stack, if any. */ | |
2082425c BP |
4866 | if (state->stack) { |
4867 | ofpbuf_put(&ctx.stack, state->stack->data, state->stack->size); | |
e672ff9b JR |
4868 | } |
4869 | ||
29bae541 BP |
4870 | /* Restore mirror state. */ |
4871 | ctx.mirrors = state->mirrors; | |
4872 | ||
e672ff9b | 4873 | /* Restore action set, if any. */ |
2082425c | 4874 | if (state->action_set_len) { |
e672ff9b JR |
4875 | const struct ofpact *a; |
4876 | ||
d6bef3cc BP |
4877 | xlate_report_actions(&ctx, "- Restoring action set", |
4878 | state->ofpacts, state->action_set_len); | |
4879 | ||
2082425c | 4880 | ofpbuf_put(&ctx.action_set, state->ofpacts, state->action_set_len); |
e672ff9b | 4881 | |
2082425c | 4882 | OFPACT_FOR_EACH(a, state->ofpacts, state->action_set_len) { |
e672ff9b JR |
4883 | if (a->type == OFPACT_GROUP) { |
4884 | ctx.action_set_has_group = true; | |
4885 | break; | |
4886 | } | |
4887 | } | |
4888 | } | |
4889 | ||
4890 | /* Restore recirculation actions. If there are no actions, processing | |
4891 | * will start with a lookup in the table set above. */ | |
2082425c BP |
4892 | if (state->ofpacts_len > state->action_set_len) { |
4893 | xin->ofpacts_len = state->ofpacts_len - state->action_set_len; | |
4894 | xin->ofpacts = state->ofpacts + | |
4895 | state->action_set_len / sizeof *state->ofpacts; | |
d6bef3cc BP |
4896 | |
4897 | xlate_report_actions(&ctx, "- Restoring actions", | |
4898 | xin->ofpacts, xin->ofpacts_len); | |
e672ff9b JR |
4899 | } |
4900 | } else if (OVS_UNLIKELY(flow->recirc_id)) { | |
4901 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); | |
4902 | ||
4903 | VLOG_WARN_RL(&rl, "Recirculation context not found for ID %"PRIx32, | |
4904 | flow->recirc_id); | |
1520ef4f | 4905 | goto exit; |
e672ff9b | 4906 | } |
621b8064 JR |
4907 | /* The bridge is now known so obtain its table version. */ |
4908 | ctx.tables_version = ofproto_dpif_get_tables_version(ctx.xbridge->ofproto); | |
9583bc14 | 4909 | |
10c44245 | 4910 | if (!xin->ofpacts && !ctx.rule) { |
b2e89cc9 BP |
4911 | ctx.rule = rule_dpif_lookup_from_table( |
4912 | ctx.xbridge->ofproto, ctx.tables_version, flow, xin->wc, | |
1e1e1d19 | 4913 | ctx.xin->resubmit_stats, &ctx.table_id, |
b2e89cc9 | 4914 | flow->in_port.ofp_port, true, true); |
10c44245 | 4915 | if (ctx.xin->resubmit_stats) { |
b2e89cc9 | 4916 | rule_dpif_credit_stats(ctx.rule, ctx.xin->resubmit_stats); |
10c44245 | 4917 | } |
b256dc52 JS |
4918 | if (ctx.xin->xcache) { |
4919 | struct xc_entry *entry; | |
4920 | ||
4921 | entry = xlate_cache_add_entry(ctx.xin->xcache, XC_RULE); | |
b2e89cc9 | 4922 | entry->u.rule = ctx.rule; |
1e1e1d19 | 4923 | rule_dpif_ref(ctx.rule); |
b256dc52 | 4924 | } |
a8c31348 BP |
4925 | |
4926 | if (OVS_UNLIKELY(ctx.xin->resubmit_hook)) { | |
b2e89cc9 | 4927 | ctx.xin->resubmit_hook(ctx.xin, ctx.rule, 0); |
a8c31348 | 4928 | } |
10c44245 | 4929 | } |
ee1afdd5 | 4930 | xout->fail_open = ctx.rule && rule_dpif_is_fail_open(ctx.rule); |
10c44245 | 4931 | |
14d2b8b2 BP |
4932 | /* Get the proximate input port of the packet. (If xin->recirc, |
4933 | * flow->in_port is the ultimate input port of the packet.) */ | |
4934 | struct xport *in_port = get_ofp_port(xbridge, | |
4935 | ctx.base_flow.in_port.ofp_port); | |
4936 | ||
e672ff9b JR |
4937 | /* Tunnel stats only for non-recirculated packets. */ |
4938 | if (!xin->recirc && in_port && in_port->is_tunnel) { | |
b256dc52 JS |
4939 | if (ctx.xin->resubmit_stats) { |
4940 | netdev_vport_inc_rx(in_port->netdev, ctx.xin->resubmit_stats); | |
4941 | if (in_port->bfd) { | |
4942 | bfd_account_rx(in_port->bfd, ctx.xin->resubmit_stats); | |
4943 | } | |
4944 | } | |
4945 | if (ctx.xin->xcache) { | |
4946 | struct xc_entry *entry; | |
4947 | ||
4948 | entry = xlate_cache_add_entry(ctx.xin->xcache, XC_NETDEV); | |
4949 | entry->u.dev.rx = netdev_ref(in_port->netdev); | |
4950 | entry->u.dev.bfd = bfd_ref(in_port->bfd); | |
d6fc5f57 EJ |
4951 | } |
4952 | } | |
4953 | ||
bef1403e BP |
4954 | if (!xin->recirc && process_special(&ctx, in_port)) { |
4955 | /* process_special() did all the processing for this packet. | |
4956 | * | |
4957 | * We do not perform special processing on recirculated packets, as | |
4958 | * recirculated packets are not really received by the bridge.*/ | |
4959 | } else if (in_port && in_port->xbundle | |
4960 | && xbundle_mirror_out(xbridge, in_port->xbundle)) { | |
4961 | if (ctx.xin->packet != NULL) { | |
4962 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
4963 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet received on port " | |
4964 | "%s, which is reserved exclusively for mirroring", | |
4965 | ctx.xbridge->name, in_port->xbundle->name); | |
4966 | } | |
4967 | } else { | |
e672ff9b | 4968 | /* Sampling is done only for packets really received by the bridge. */ |
a6092018 | 4969 | unsigned int user_cookie_offset = 0; |
e672ff9b | 4970 | if (!xin->recirc) { |
a6092018 BP |
4971 | user_cookie_offset = compose_sflow_action(&ctx); |
4972 | compose_ipfix_action(&ctx, ODPP_NONE); | |
e672ff9b | 4973 | } |
0731abc5 | 4974 | size_t sample_actions_len = ctx.odp_actions->size; |
9583bc14 | 4975 | |
234c3da9 BP |
4976 | if (tnl_process_ecn(flow) |
4977 | && (!in_port || may_receive(in_port, &ctx))) { | |
1806291d BP |
4978 | const struct ofpact *ofpacts; |
4979 | size_t ofpacts_len; | |
4980 | ||
4981 | if (xin->ofpacts) { | |
4982 | ofpacts = xin->ofpacts; | |
4983 | ofpacts_len = xin->ofpacts_len; | |
4984 | } else if (ctx.rule) { | |
4985 | const struct rule_actions *actions | |
4986 | = rule_dpif_get_actions(ctx.rule); | |
4987 | ofpacts = actions->ofpacts; | |
4988 | ofpacts_len = actions->ofpacts_len; | |
4989 | ctx.rule_cookie = rule_dpif_get_flow_cookie(ctx.rule); | |
4990 | } else { | |
4991 | OVS_NOT_REACHED(); | |
4992 | } | |
4993 | ||
7efbc3b7 | 4994 | mirror_ingress_packet(&ctx); |
9583bc14 EJ |
4995 | do_xlate_actions(ofpacts, ofpacts_len, &ctx); |
4996 | ||
4997 | /* We've let OFPP_NORMAL and the learning action look at the | |
4998 | * packet, so drop it now if forwarding is disabled. */ | |
9efd308e DV |
4999 | if (in_port && (!xport_stp_forward_state(in_port) || |
5000 | !xport_rstp_forward_state(in_port))) { | |
8ec90813 | 5001 | /* Drop all actions added by do_xlate_actions() above. */ |
1520ef4f | 5002 | ctx.odp_actions->size = sample_actions_len; |
e672ff9b JR |
5003 | |
5004 | /* Undo changes that may have been done for recirculation. */ | |
5005 | if (exit_recirculates(&ctx)) { | |
5006 | ctx.action_set.size = ctx.recirc_action_offset; | |
5007 | ctx.recirc_action_offset = -1; | |
5008 | ctx.last_unroll_offset = -1; | |
5009 | } | |
8ec90813 | 5010 | } else if (ctx.action_set.size) { |
e672ff9b JR |
5011 | /* Translate action set only if not dropping the packet and |
5012 | * not recirculating. */ | |
5013 | if (!exit_recirculates(&ctx)) { | |
5014 | xlate_action_set(&ctx); | |
5015 | } | |
5016 | } | |
5017 | /* Check if need to recirculate. */ | |
5018 | if (exit_recirculates(&ctx)) { | |
5019 | compose_recirculate_action(&ctx); | |
9583bc14 EJ |
5020 | } |
5021 | } | |
5022 | ||
e672ff9b JR |
5023 | /* Output only fully processed packets. */ |
5024 | if (!exit_recirculates(&ctx) | |
5025 | && xbridge->has_in_band | |
ce4a6b76 BP |
5026 | && in_band_must_output_to_local_port(flow) |
5027 | && !actions_output_to_local_port(&ctx)) { | |
e93ef1c7 | 5028 | compose_output_action(&ctx, OFPP_LOCAL, NULL); |
9583bc14 | 5029 | } |
aaa0fbae | 5030 | |
a6092018 BP |
5031 | if (user_cookie_offset) { |
5032 | fix_sflow_action(&ctx, user_cookie_offset); | |
e672ff9b | 5033 | } |
9583bc14 EJ |
5034 | } |
5035 | ||
1520ef4f | 5036 | if (nl_attr_oversized(ctx.odp_actions->size)) { |
542024c4 | 5037 | /* These datapath actions are too big for a Netlink attribute, so we |
0f032e95 BP |
5038 | * can't hand them to the kernel directly. dpif_execute() can execute |
5039 | * them one by one with help, so just mark the result as SLOW_ACTION to | |
5040 | * prevent the flow from being installed. */ | |
5041 | COVERAGE_INC(xlate_actions_oversize); | |
5042 | ctx.xout->slow |= SLOW_ACTION; | |
1520ef4f | 5043 | } else if (too_many_output_actions(ctx.odp_actions)) { |
7d031d7e BP |
5044 | COVERAGE_INC(xlate_actions_too_many_output); |
5045 | ctx.xout->slow |= SLOW_ACTION; | |
542024c4 BP |
5046 | } |
5047 | ||
1806291d BP |
5048 | /* Do netflow only for packets really received by the bridge and not sent |
5049 | * to the controller. We consider packets sent to the controller to be | |
5050 | * part of the control plane rather than the data plane. */ | |
5051 | if (!xin->recirc && xbridge->netflow && !(xout->slow & SLOW_CONTROLLER)) { | |
5052 | if (ctx.xin->resubmit_stats) { | |
5053 | netflow_flow_update(xbridge->netflow, flow, | |
2031ef97 | 5054 | ctx.nf_output_iface, |
1806291d BP |
5055 | ctx.xin->resubmit_stats); |
5056 | } | |
5057 | if (ctx.xin->xcache) { | |
5058 | struct xc_entry *entry; | |
b256dc52 | 5059 | |
1806291d BP |
5060 | entry = xlate_cache_add_entry(ctx.xin->xcache, XC_NETFLOW); |
5061 | entry->u.nf.netflow = netflow_ref(xbridge->netflow); | |
5062 | entry->u.nf.flow = xmemdup(flow, sizeof *flow); | |
2031ef97 | 5063 | entry->u.nf.iface = ctx.nf_output_iface; |
d6fc5f57 EJ |
5064 | } |
5065 | } | |
5066 | ||
49a73e0c | 5067 | if (xin->wc) { |
234c3da9 | 5068 | xlate_wc_finish(&ctx); |
c56fac1b | 5069 | } |
1520ef4f BP |
5070 | |
5071 | exit: | |
5072 | ofpbuf_uninit(&ctx.stack); | |
5073 | ofpbuf_uninit(&ctx.action_set); | |
5074 | ofpbuf_uninit(&scratch_actions); | |
91d6cd12 AW |
5075 | } |
5076 | ||
5077 | /* Sends 'packet' out 'ofport'. | |
5078 | * May modify 'packet'. | |
5079 | * Returns 0 if successful, otherwise a positive errno value. */ | |
5080 | int | |
cf62fa4c | 5081 | xlate_send_packet(const struct ofport_dpif *ofport, struct dp_packet *packet) |
91d6cd12 | 5082 | { |
84f0f298 | 5083 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
91d6cd12 | 5084 | struct xport *xport; |
91d6cd12 | 5085 | struct ofpact_output output; |
91d6cd12 | 5086 | struct flow flow; |
91d6cd12 | 5087 | |
91d6cd12 AW |
5088 | ofpact_init(&output.ofpact, OFPACT_OUTPUT, sizeof output); |
5089 | /* Use OFPP_NONE as the in_port to avoid special packet processing. */ | |
cf62fa4c | 5090 | flow_extract(packet, &flow); |
b5e7e61a | 5091 | flow.in_port.ofp_port = OFPP_NONE; |
91d6cd12 | 5092 | |
84f0f298 | 5093 | xport = xport_lookup(xcfg, ofport); |
91d6cd12 | 5094 | if (!xport) { |
02ea2703 | 5095 | return EINVAL; |
91d6cd12 | 5096 | } |
91d6cd12 AW |
5097 | output.port = xport->ofp_port; |
5098 | output.max_len = 0; | |
e491a67a YT |
5099 | |
5100 | return ofproto_dpif_execute_actions(xport->xbridge->ofproto, &flow, NULL, | |
5101 | &output.ofpact, sizeof output, | |
5102 | packet); | |
9583bc14 | 5103 | } |
b256dc52 JS |
5104 | |
5105 | struct xlate_cache * | |
5106 | xlate_cache_new(void) | |
5107 | { | |
5108 | struct xlate_cache *xcache = xmalloc(sizeof *xcache); | |
5109 | ||
5110 | ofpbuf_init(&xcache->entries, 512); | |
5111 | return xcache; | |
5112 | } | |
5113 | ||
5114 | static struct xc_entry * | |
5115 | xlate_cache_add_entry(struct xlate_cache *xcache, enum xc_type type) | |
5116 | { | |
5117 | struct xc_entry *entry; | |
5118 | ||
5119 | entry = ofpbuf_put_zeros(&xcache->entries, sizeof *entry); | |
5120 | entry->type = type; | |
5121 | ||
5122 | return entry; | |
5123 | } | |
5124 | ||
5125 | static void | |
5126 | xlate_cache_netdev(struct xc_entry *entry, const struct dpif_flow_stats *stats) | |
5127 | { | |
5128 | if (entry->u.dev.tx) { | |
5129 | netdev_vport_inc_tx(entry->u.dev.tx, stats); | |
5130 | } | |
5131 | if (entry->u.dev.rx) { | |
5132 | netdev_vport_inc_rx(entry->u.dev.rx, stats); | |
5133 | } | |
5134 | if (entry->u.dev.bfd) { | |
5135 | bfd_account_rx(entry->u.dev.bfd, stats); | |
5136 | } | |
5137 | } | |
5138 | ||
5139 | static void | |
5140 | xlate_cache_normal(struct ofproto_dpif *ofproto, struct flow *flow, int vlan) | |
5141 | { | |
84f0f298 | 5142 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
b256dc52 JS |
5143 | struct xbridge *xbridge; |
5144 | struct xbundle *xbundle; | |
5145 | struct flow_wildcards wc; | |
5146 | ||
84f0f298 | 5147 | xbridge = xbridge_lookup(xcfg, ofproto); |
b256dc52 JS |
5148 | if (!xbridge) { |
5149 | return; | |
5150 | } | |
5151 | ||
5152 | xbundle = lookup_input_bundle(xbridge, flow->in_port.ofp_port, false, | |
5153 | NULL); | |
5154 | if (!xbundle) { | |
5155 | return; | |
5156 | } | |
5157 | ||
5158 | update_learning_table(xbridge, flow, &wc, vlan, xbundle); | |
5159 | } | |
5160 | ||
5161 | /* Push stats and perform side effects of flow translation. */ | |
5162 | void | |
0725e747 | 5163 | xlate_push_stats(struct xlate_cache *xcache, |
b256dc52 JS |
5164 | const struct dpif_flow_stats *stats) |
5165 | { | |
5166 | struct xc_entry *entry; | |
5167 | struct ofpbuf entries = xcache->entries; | |
74ff3298 | 5168 | struct eth_addr dmac; |
b256dc52 | 5169 | |
bc388583 BP |
5170 | if (!stats->n_packets) { |
5171 | return; | |
5172 | } | |
5173 | ||
b256dc52 JS |
5174 | XC_ENTRY_FOR_EACH (entry, entries, xcache) { |
5175 | switch (entry->type) { | |
5176 | case XC_RULE: | |
5177 | rule_dpif_credit_stats(entry->u.rule, stats); | |
5178 | break; | |
5179 | case XC_BOND: | |
5180 | bond_account(entry->u.bond.bond, entry->u.bond.flow, | |
5181 | entry->u.bond.vid, stats->n_bytes); | |
5182 | break; | |
5183 | case XC_NETDEV: | |
5184 | xlate_cache_netdev(entry, stats); | |
5185 | break; | |
5186 | case XC_NETFLOW: | |
5187 | netflow_flow_update(entry->u.nf.netflow, entry->u.nf.flow, | |
5188 | entry->u.nf.iface, stats); | |
5189 | break; | |
5190 | case XC_MIRROR: | |
5191 | mirror_update_stats(entry->u.mirror.mbridge, | |
5192 | entry->u.mirror.mirrors, | |
5193 | stats->n_packets, stats->n_bytes); | |
5194 | break; | |
5195 | case XC_LEARN: | |
0725e747 | 5196 | ofproto_dpif_flow_mod(entry->u.learn.ofproto, entry->u.learn.fm); |
b256dc52 JS |
5197 | break; |
5198 | case XC_NORMAL: | |
0725e747 BP |
5199 | xlate_cache_normal(entry->u.normal.ofproto, entry->u.normal.flow, |
5200 | entry->u.normal.vlan); | |
b256dc52 JS |
5201 | break; |
5202 | case XC_FIN_TIMEOUT: | |
5203 | xlate_fin_timeout__(entry->u.fin.rule, stats->tcp_flags, | |
5204 | entry->u.fin.idle, entry->u.fin.hard); | |
5205 | break; | |
1e684d7d RW |
5206 | case XC_GROUP: |
5207 | group_dpif_credit_stats(entry->u.group.group, entry->u.group.bucket, | |
5208 | stats); | |
5209 | break; | |
a36de779 PS |
5210 | case XC_TNL_ARP: |
5211 | /* Lookup arp to avoid arp timeout. */ | |
74ff3298 JR |
5212 | tnl_arp_lookup(entry->u.tnl_arp_cache.br_name, |
5213 | entry->u.tnl_arp_cache.d_ip, &dmac); | |
a36de779 | 5214 | break; |
b256dc52 JS |
5215 | default: |
5216 | OVS_NOT_REACHED(); | |
5217 | } | |
5218 | } | |
5219 | } | |
5220 | ||
5221 | static void | |
5222 | xlate_dev_unref(struct xc_entry *entry) | |
5223 | { | |
5224 | if (entry->u.dev.tx) { | |
5225 | netdev_close(entry->u.dev.tx); | |
5226 | } | |
5227 | if (entry->u.dev.rx) { | |
5228 | netdev_close(entry->u.dev.rx); | |
5229 | } | |
5230 | if (entry->u.dev.bfd) { | |
5231 | bfd_unref(entry->u.dev.bfd); | |
5232 | } | |
5233 | } | |
5234 | ||
5235 | static void | |
5236 | xlate_cache_clear_netflow(struct netflow *netflow, struct flow *flow) | |
5237 | { | |
b256dc52 JS |
5238 | netflow_flow_clear(netflow, flow); |
5239 | netflow_unref(netflow); | |
5240 | free(flow); | |
5241 | } | |
5242 | ||
5243 | void | |
5244 | xlate_cache_clear(struct xlate_cache *xcache) | |
5245 | { | |
5246 | struct xc_entry *entry; | |
5247 | struct ofpbuf entries; | |
5248 | ||
5249 | if (!xcache) { | |
5250 | return; | |
5251 | } | |
5252 | ||
5253 | XC_ENTRY_FOR_EACH (entry, entries, xcache) { | |
5254 | switch (entry->type) { | |
5255 | case XC_RULE: | |
5256 | rule_dpif_unref(entry->u.rule); | |
5257 | break; | |
5258 | case XC_BOND: | |
5259 | free(entry->u.bond.flow); | |
5260 | bond_unref(entry->u.bond.bond); | |
5261 | break; | |
5262 | case XC_NETDEV: | |
5263 | xlate_dev_unref(entry); | |
5264 | break; | |
5265 | case XC_NETFLOW: | |
5266 | xlate_cache_clear_netflow(entry->u.nf.netflow, entry->u.nf.flow); | |
5267 | break; | |
5268 | case XC_MIRROR: | |
5269 | mbridge_unref(entry->u.mirror.mbridge); | |
5270 | break; | |
5271 | case XC_LEARN: | |
4165b5e0 JS |
5272 | free(entry->u.learn.fm); |
5273 | ofpbuf_delete(entry->u.learn.ofpacts); | |
b256dc52 JS |
5274 | break; |
5275 | case XC_NORMAL: | |
5276 | free(entry->u.normal.flow); | |
5277 | break; | |
5278 | case XC_FIN_TIMEOUT: | |
83709dfa JR |
5279 | /* 'u.fin.rule' is always already held as a XC_RULE, which |
5280 | * has already released it's reference above. */ | |
b256dc52 | 5281 | break; |
1e684d7d RW |
5282 | case XC_GROUP: |
5283 | group_dpif_unref(entry->u.group.group); | |
5284 | break; | |
a36de779 PS |
5285 | case XC_TNL_ARP: |
5286 | break; | |
b256dc52 JS |
5287 | default: |
5288 | OVS_NOT_REACHED(); | |
5289 | } | |
5290 | } | |
5291 | ||
5292 | ofpbuf_clear(&xcache->entries); | |
5293 | } | |
5294 | ||
5295 | void | |
5296 | xlate_cache_delete(struct xlate_cache *xcache) | |
5297 | { | |
5298 | xlate_cache_clear(xcache); | |
5299 | ofpbuf_uninit(&xcache->entries); | |
5300 | free(xcache); | |
5301 | } |