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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. */ |
4d0acc70 | 208 | bool exit; /* No further actions should be processed. */ |
7fdb60a7 | 209 | |
e672ff9b JR |
210 | /* These are used for non-bond recirculation. The recirculation IDs are |
211 | * stored in xout and must be associated with a datapath flow (ukey), | |
212 | * otherwise they will be freed when the xout is uninitialized. | |
213 | * | |
214 | * | |
215 | * Steps in Recirculation Translation | |
216 | * ================================== | |
217 | * | |
218 | * At some point during translation, the code recognizes the need for | |
219 | * recirculation. For example, recirculation is necessary when, after | |
220 | * popping the last MPLS label, an action or a match tries to examine or | |
221 | * modify a field that has been newly revealed following the MPLS label. | |
222 | * | |
223 | * The simplest part of the work to be done is to commit existing changes to | |
224 | * the packet, which produces datapath actions corresponding to the changes, | |
225 | * and after this, add an OVS_ACTION_ATTR_RECIRC datapath action. | |
226 | * | |
227 | * The main problem here is preserving state. When the datapath executes | |
228 | * OVS_ACTION_ATTR_RECIRC, it will upcall to userspace to get a translation | |
229 | * for the post-recirculation actions. At this point userspace has to | |
230 | * resume the translation where it left off, which means that it has to | |
231 | * execute the following: | |
232 | * | |
233 | * - The action that prompted recirculation, and any actions following | |
234 | * it within the same flow. | |
235 | * | |
236 | * - If the action that prompted recirculation was invoked within a | |
237 | * NXAST_RESUBMIT, then any actions following the resubmit. These | |
238 | * "resubmit"s can be nested, so this has to go all the way up the | |
239 | * control stack. | |
240 | * | |
241 | * - The OpenFlow 1.1+ action set. | |
242 | * | |
243 | * State that actions and flow table lookups can depend on, such as the | |
244 | * following, must also be preserved: | |
245 | * | |
246 | * - Metadata fields (input port, registers, OF1.1+ metadata, ...). | |
247 | * | |
248 | * - Action set, stack | |
249 | * | |
250 | * - The table ID and cookie of the flow being translated at each level | |
251 | * of the control stack (since OFPAT_CONTROLLER actions send these to | |
252 | * the controller). | |
253 | * | |
254 | * Translation allows for the control of this state preservation via these | |
255 | * members. When a need for recirculation is identified, the translation | |
256 | * process: | |
257 | * | |
258 | * 1. Sets 'recirc_action_offset' to the current size of 'action_set'. The | |
259 | * action set is part of what needs to be preserved, so this allows the | |
260 | * action set and the additional state to share the 'action_set' buffer. | |
261 | * Later steps can tell that setup for recirculation is in progress from | |
262 | * the nonnegative value of 'recirc_action_offset'. | |
263 | * | |
264 | * 2. Sets 'exit' to true to tell later steps that we're exiting from the | |
265 | * translation process. | |
266 | * | |
267 | * 3. Adds an OFPACT_UNROLL_XLATE action to 'action_set'. This action | |
268 | * holds the current table ID and cookie so that they can be restored | |
269 | * during a post-recirculation upcall translation. | |
270 | * | |
271 | * 4. Adds the action that prompted recirculation and any actions following | |
272 | * it within the same flow to 'action_set', so that they can be executed | |
273 | * during a post-recirculation upcall translation. | |
274 | * | |
275 | * 5. Returns. | |
276 | * | |
277 | * 6. The action that prompted recirculation might be nested in a stack of | |
278 | * nested "resubmit"s that have actions remaining. Each of these notices | |
279 | * that we're exiting (from 'exit') and that recirculation setup is in | |
280 | * progress (from 'recirc_action_offset') and responds by adding more | |
281 | * OFPACT_UNROLL_XLATE actions to 'action_set', as necessary, and any | |
282 | * actions that were yet unprocessed. | |
283 | * | |
284 | * The caller stores all the state produced by this process associated with | |
285 | * the recirculation ID. For post-recirculation upcall translation, the | |
286 | * caller passes it back in for the new translation to execute. The | |
287 | * process yielded a set of ofpacts that can be translated directly, so it | |
288 | * is not much of a special case at that point. | |
289 | */ | |
290 | int recirc_action_offset; /* Offset in 'action_set' to actions to be | |
291 | * executed after recirculation, or -1. */ | |
292 | int last_unroll_offset; /* Offset in 'action_set' to the latest unroll | |
293 | * action, or -1. */ | |
294 | ||
7bbdd84f SH |
295 | /* True if a packet was but is no longer MPLS (due to an MPLS pop action). |
296 | * This is a trigger for recirculation in cases where translating an action | |
297 | * or looking up a flow requires access to the fields of the packet after | |
1d741d6d | 298 | * the MPLS label stack that was originally present. */ |
7bbdd84f SH |
299 | bool was_mpls; |
300 | ||
7fdb60a7 SH |
301 | /* OpenFlow 1.1+ action set. |
302 | * | |
303 | * 'action_set' accumulates "struct ofpact"s added by OFPACT_WRITE_ACTIONS. | |
304 | * When translation is otherwise complete, ofpacts_execute_action_set() | |
305 | * converts it to a set of "struct ofpact"s that can be translated into | |
ed9c9e3e | 306 | * datapath actions. */ |
c61f3870 | 307 | bool action_set_has_group; /* Action set contains OFPACT_GROUP? */ |
7fdb60a7 | 308 | struct ofpbuf action_set; /* Action set. */ |
4d0acc70 EJ |
309 | }; |
310 | ||
ed9c9e3e JR |
311 | static void xlate_action_set(struct xlate_ctx *ctx); |
312 | ||
1d741d6d JR |
313 | static void |
314 | ctx_trigger_recirculation(struct xlate_ctx *ctx) | |
315 | { | |
316 | ctx->exit = true; | |
317 | ctx->recirc_action_offset = ctx->action_set.size; | |
318 | } | |
319 | ||
320 | static bool | |
321 | ctx_first_recirculation_action(const struct xlate_ctx *ctx) | |
322 | { | |
323 | return ctx->recirc_action_offset == ctx->action_set.size; | |
324 | } | |
325 | ||
e672ff9b JR |
326 | static inline bool |
327 | exit_recirculates(const struct xlate_ctx *ctx) | |
328 | { | |
329 | /* When recirculating the 'recirc_action_offset' has a non-negative value. | |
330 | */ | |
331 | return ctx->recirc_action_offset >= 0; | |
332 | } | |
333 | ||
334 | static void compose_recirculate_action(struct xlate_ctx *ctx); | |
335 | ||
9583bc14 EJ |
336 | /* A controller may use OFPP_NONE as the ingress port to indicate that |
337 | * it did not arrive on a "real" port. 'ofpp_none_bundle' exists for | |
338 | * when an input bundle is needed for validation (e.g., mirroring or | |
339 | * OFPP_NORMAL processing). It is not connected to an 'ofproto' or have | |
3548d242 BP |
340 | * any 'port' structs, so care must be taken when dealing with it. */ |
341 | static struct xbundle ofpp_none_bundle = { | |
342 | .name = "OFPP_NONE", | |
343 | .vlan_mode = PORT_VLAN_TRUNK | |
344 | }; | |
9583bc14 | 345 | |
55954f6e EJ |
346 | /* Node in 'xport''s 'skb_priorities' map. Used to maintain a map from |
347 | * 'priority' (the datapath's term for QoS queue) to the dscp bits which all | |
348 | * traffic egressing the 'ofport' with that priority should be marked with. */ | |
349 | struct skb_priority_to_dscp { | |
350 | struct hmap_node hmap_node; /* Node in 'ofport_dpif''s 'skb_priorities'. */ | |
351 | uint32_t skb_priority; /* Priority of this queue (see struct flow). */ | |
352 | ||
353 | uint8_t dscp; /* DSCP bits to mark outgoing traffic with. */ | |
354 | }; | |
355 | ||
b256dc52 JS |
356 | enum xc_type { |
357 | XC_RULE, | |
358 | XC_BOND, | |
359 | XC_NETDEV, | |
360 | XC_NETFLOW, | |
361 | XC_MIRROR, | |
362 | XC_LEARN, | |
363 | XC_NORMAL, | |
364 | XC_FIN_TIMEOUT, | |
1e684d7d | 365 | XC_GROUP, |
a36de779 | 366 | XC_TNL_ARP, |
b256dc52 JS |
367 | }; |
368 | ||
369 | /* xlate_cache entries hold enough information to perform the side effects of | |
370 | * xlate_actions() for a rule, without needing to perform rule translation | |
371 | * from scratch. The primary usage of these is to submit statistics to objects | |
372 | * that a flow relates to, although they may be used for other effects as well | |
373 | * (for instance, refreshing hard timeouts for learned flows). */ | |
374 | struct xc_entry { | |
375 | enum xc_type type; | |
376 | union { | |
377 | struct rule_dpif *rule; | |
378 | struct { | |
379 | struct netdev *tx; | |
380 | struct netdev *rx; | |
381 | struct bfd *bfd; | |
382 | } dev; | |
383 | struct { | |
384 | struct netflow *netflow; | |
385 | struct flow *flow; | |
386 | ofp_port_t iface; | |
387 | } nf; | |
388 | struct { | |
389 | struct mbridge *mbridge; | |
390 | mirror_mask_t mirrors; | |
391 | } mirror; | |
392 | struct { | |
393 | struct bond *bond; | |
394 | struct flow *flow; | |
395 | uint16_t vid; | |
396 | } bond; | |
397 | struct { | |
4165b5e0 JS |
398 | struct ofproto_dpif *ofproto; |
399 | struct ofputil_flow_mod *fm; | |
400 | struct ofpbuf *ofpacts; | |
b256dc52 JS |
401 | } learn; |
402 | struct { | |
403 | struct ofproto_dpif *ofproto; | |
404 | struct flow *flow; | |
405 | int vlan; | |
406 | } normal; | |
407 | struct { | |
408 | struct rule_dpif *rule; | |
409 | uint16_t idle; | |
410 | uint16_t hard; | |
411 | } fin; | |
1e684d7d RW |
412 | struct { |
413 | struct group_dpif *group; | |
414 | struct ofputil_bucket *bucket; | |
415 | } group; | |
a36de779 PS |
416 | struct { |
417 | char br_name[IFNAMSIZ]; | |
418 | ovs_be32 d_ip; | |
419 | } tnl_arp_cache; | |
b256dc52 JS |
420 | } u; |
421 | }; | |
422 | ||
423 | #define XC_ENTRY_FOR_EACH(entry, entries, xcache) \ | |
424 | entries = xcache->entries; \ | |
425 | for (entry = ofpbuf_try_pull(&entries, sizeof *entry); \ | |
426 | entry; \ | |
427 | entry = ofpbuf_try_pull(&entries, sizeof *entry)) | |
428 | ||
429 | struct xlate_cache { | |
430 | struct ofpbuf entries; | |
431 | }; | |
432 | ||
84f0f298 RW |
433 | /* Xlate config contains hash maps of all bridges, bundles and ports. |
434 | * Xcfgp contains the pointer to the current xlate configuration. | |
435 | * When the main thread needs to change the configuration, it copies xcfgp to | |
436 | * new_xcfg and edits new_xcfg. This enables the use of RCU locking which | |
437 | * does not block handler and revalidator threads. */ | |
438 | struct xlate_cfg { | |
439 | struct hmap xbridges; | |
440 | struct hmap xbundles; | |
441 | struct hmap xports; | |
442 | }; | |
b1b72f2d | 443 | static OVSRCU_TYPE(struct xlate_cfg *) xcfgp = OVSRCU_INITIALIZER(NULL); |
f439f23b | 444 | static struct xlate_cfg *new_xcfg = NULL; |
46c88433 EJ |
445 | |
446 | static bool may_receive(const struct xport *, struct xlate_ctx *); | |
9583bc14 EJ |
447 | static void do_xlate_actions(const struct ofpact *, size_t ofpacts_len, |
448 | struct xlate_ctx *); | |
adcf00ba | 449 | static void xlate_normal(struct xlate_ctx *); |
c1b3756c BP |
450 | static inline void xlate_report(struct xlate_ctx *, const char *, ...) |
451 | OVS_PRINTF_FORMAT(2, 3); | |
6d328fa2 SH |
452 | static void xlate_table_action(struct xlate_ctx *, ofp_port_t in_port, |
453 | uint8_t table_id, bool may_packet_in, | |
454 | bool honor_table_miss); | |
46c88433 EJ |
455 | static bool input_vid_is_valid(uint16_t vid, struct xbundle *, bool warn); |
456 | static uint16_t input_vid_to_vlan(const struct xbundle *, uint16_t vid); | |
457 | static void output_normal(struct xlate_ctx *, const struct xbundle *, | |
9583bc14 | 458 | uint16_t vlan); |
e93ef1c7 JR |
459 | |
460 | /* Optional bond recirculation parameter to compose_output_action(). */ | |
461 | struct xlate_bond_recirc { | |
462 | uint32_t recirc_id; /* !0 Use recirculation instead of output. */ | |
463 | uint8_t hash_alg; /* !0 Compute hash for recirc before. */ | |
464 | uint32_t hash_basis; /* Compute hash for recirc before. */ | |
465 | }; | |
466 | ||
467 | static void compose_output_action(struct xlate_ctx *, ofp_port_t ofp_port, | |
468 | const struct xlate_bond_recirc *xr); | |
9583bc14 | 469 | |
84f0f298 RW |
470 | static struct xbridge *xbridge_lookup(struct xlate_cfg *, |
471 | const struct ofproto_dpif *); | |
472 | static struct xbundle *xbundle_lookup(struct xlate_cfg *, | |
473 | const struct ofbundle *); | |
474 | static struct xport *xport_lookup(struct xlate_cfg *, | |
475 | const struct ofport_dpif *); | |
46c88433 | 476 | static struct xport *get_ofp_port(const struct xbridge *, ofp_port_t ofp_port); |
55954f6e EJ |
477 | static struct skb_priority_to_dscp *get_skb_priority(const struct xport *, |
478 | uint32_t skb_priority); | |
479 | static void clear_skb_priorities(struct xport *); | |
16194afd | 480 | static size_t count_skb_priorities(const struct xport *); |
55954f6e EJ |
481 | static bool dscp_from_skb_priority(const struct xport *, uint32_t skb_priority, |
482 | uint8_t *dscp); | |
46c88433 | 483 | |
b256dc52 JS |
484 | static struct xc_entry *xlate_cache_add_entry(struct xlate_cache *xc, |
485 | enum xc_type type); | |
84f0f298 RW |
486 | static void xlate_xbridge_init(struct xlate_cfg *, struct xbridge *); |
487 | static void xlate_xbundle_init(struct xlate_cfg *, struct xbundle *); | |
488 | static void xlate_xport_init(struct xlate_cfg *, struct xport *); | |
9efd308e | 489 | static void xlate_xbridge_set(struct xbridge *, struct dpif *, |
9efd308e DV |
490 | const struct mac_learning *, struct stp *, |
491 | struct rstp *, const struct mcast_snooping *, | |
492 | const struct mbridge *, | |
493 | const struct dpif_sflow *, | |
494 | const struct dpif_ipfix *, | |
2f47cdf4 | 495 | const struct netflow *, |
84f0f298 | 496 | bool forward_bpdu, bool has_in_band, |
b440dd8c | 497 | const struct dpif_backer_support *); |
84f0f298 RW |
498 | static void xlate_xbundle_set(struct xbundle *xbundle, |
499 | enum port_vlan_mode vlan_mode, int vlan, | |
500 | unsigned long *trunks, bool use_priority_tags, | |
501 | const struct bond *bond, const struct lacp *lacp, | |
502 | bool floodable); | |
503 | static void xlate_xport_set(struct xport *xport, odp_port_t odp_port, | |
504 | const struct netdev *netdev, const struct cfm *cfm, | |
0477baa9 DF |
505 | const struct bfd *bfd, const struct lldp *lldp, |
506 | int stp_port_no, const struct rstp_port *rstp_port, | |
84f0f298 RW |
507 | enum ofputil_port_config config, |
508 | enum ofputil_port_state state, bool is_tunnel, | |
509 | bool may_enable); | |
510 | static void xlate_xbridge_remove(struct xlate_cfg *, struct xbridge *); | |
511 | static void xlate_xbundle_remove(struct xlate_cfg *, struct xbundle *); | |
512 | static void xlate_xport_remove(struct xlate_cfg *, struct xport *); | |
513 | static void xlate_xbridge_copy(struct xbridge *); | |
514 | static void xlate_xbundle_copy(struct xbridge *, struct xbundle *); | |
515 | static void xlate_xport_copy(struct xbridge *, struct xbundle *, | |
516 | struct xport *); | |
517 | static void xlate_xcfg_free(struct xlate_cfg *); | |
b256dc52 | 518 | |
34dd0d78 | 519 | static inline void |
c1b3756c | 520 | xlate_report(struct xlate_ctx *ctx, const char *format, ...) |
34dd0d78 JR |
521 | { |
522 | if (OVS_UNLIKELY(ctx->xin->report_hook)) { | |
c1b3756c BP |
523 | va_list args; |
524 | ||
525 | va_start(args, format); | |
526 | ctx->xin->report_hook(ctx->xin, ctx->recurse, format, args); | |
527 | va_end(args); | |
34dd0d78 JR |
528 | } |
529 | } | |
84f0f298 RW |
530 | |
531 | static void | |
532 | xlate_xbridge_init(struct xlate_cfg *xcfg, struct xbridge *xbridge) | |
533 | { | |
534 | list_init(&xbridge->xbundles); | |
535 | hmap_init(&xbridge->xports); | |
536 | hmap_insert(&xcfg->xbridges, &xbridge->hmap_node, | |
537 | hash_pointer(xbridge->ofproto, 0)); | |
538 | } | |
539 | ||
540 | static void | |
541 | xlate_xbundle_init(struct xlate_cfg *xcfg, struct xbundle *xbundle) | |
542 | { | |
543 | list_init(&xbundle->xports); | |
544 | list_insert(&xbundle->xbridge->xbundles, &xbundle->list_node); | |
545 | hmap_insert(&xcfg->xbundles, &xbundle->hmap_node, | |
546 | hash_pointer(xbundle->ofbundle, 0)); | |
547 | } | |
548 | ||
549 | static void | |
550 | xlate_xport_init(struct xlate_cfg *xcfg, struct xport *xport) | |
551 | { | |
552 | hmap_init(&xport->skb_priorities); | |
553 | hmap_insert(&xcfg->xports, &xport->hmap_node, | |
554 | hash_pointer(xport->ofport, 0)); | |
555 | hmap_insert(&xport->xbridge->xports, &xport->ofp_node, | |
556 | hash_ofp_port(xport->ofp_port)); | |
557 | } | |
558 | ||
559 | static void | |
560 | xlate_xbridge_set(struct xbridge *xbridge, | |
561 | struct dpif *dpif, | |
ec89fc6f | 562 | const struct mac_learning *ml, struct stp *stp, |
9efd308e | 563 | struct rstp *rstp, const struct mcast_snooping *ms, |
ec89fc6f | 564 | const struct mbridge *mbridge, |
46c88433 | 565 | const struct dpif_sflow *sflow, |
ce3955be | 566 | const struct dpif_ipfix *ipfix, |
2f47cdf4 | 567 | const struct netflow *netflow, |
4b97b70d | 568 | bool forward_bpdu, bool has_in_band, |
b440dd8c | 569 | const struct dpif_backer_support *support) |
46c88433 | 570 | { |
46c88433 EJ |
571 | if (xbridge->ml != ml) { |
572 | mac_learning_unref(xbridge->ml); | |
573 | xbridge->ml = mac_learning_ref(ml); | |
574 | } | |
575 | ||
6d95c4e8 FL |
576 | if (xbridge->ms != ms) { |
577 | mcast_snooping_unref(xbridge->ms); | |
578 | xbridge->ms = mcast_snooping_ref(ms); | |
579 | } | |
580 | ||
46c88433 EJ |
581 | if (xbridge->mbridge != mbridge) { |
582 | mbridge_unref(xbridge->mbridge); | |
583 | xbridge->mbridge = mbridge_ref(mbridge); | |
584 | } | |
585 | ||
586 | if (xbridge->sflow != sflow) { | |
587 | dpif_sflow_unref(xbridge->sflow); | |
588 | xbridge->sflow = dpif_sflow_ref(sflow); | |
589 | } | |
590 | ||
591 | if (xbridge->ipfix != ipfix) { | |
592 | dpif_ipfix_unref(xbridge->ipfix); | |
593 | xbridge->ipfix = dpif_ipfix_ref(ipfix); | |
594 | } | |
595 | ||
9d189a50 EJ |
596 | if (xbridge->stp != stp) { |
597 | stp_unref(xbridge->stp); | |
598 | xbridge->stp = stp_ref(stp); | |
599 | } | |
600 | ||
9efd308e DV |
601 | if (xbridge->rstp != rstp) { |
602 | rstp_unref(xbridge->rstp); | |
603 | xbridge->rstp = rstp_ref(rstp); | |
604 | } | |
605 | ||
ce3955be EJ |
606 | if (xbridge->netflow != netflow) { |
607 | netflow_unref(xbridge->netflow); | |
608 | xbridge->netflow = netflow_ref(netflow); | |
609 | } | |
610 | ||
89a8a7f0 | 611 | xbridge->dpif = dpif; |
46c88433 EJ |
612 | xbridge->forward_bpdu = forward_bpdu; |
613 | xbridge->has_in_band = has_in_band; | |
b440dd8c | 614 | xbridge->support = *support; |
46c88433 EJ |
615 | } |
616 | ||
84f0f298 RW |
617 | static void |
618 | xlate_xbundle_set(struct xbundle *xbundle, | |
619 | enum port_vlan_mode vlan_mode, int vlan, | |
620 | unsigned long *trunks, bool use_priority_tags, | |
621 | const struct bond *bond, const struct lacp *lacp, | |
622 | bool floodable) | |
623 | { | |
624 | ovs_assert(xbundle->xbridge); | |
625 | ||
626 | xbundle->vlan_mode = vlan_mode; | |
627 | xbundle->vlan = vlan; | |
628 | xbundle->trunks = trunks; | |
629 | xbundle->use_priority_tags = use_priority_tags; | |
630 | xbundle->floodable = floodable; | |
631 | ||
632 | if (xbundle->bond != bond) { | |
633 | bond_unref(xbundle->bond); | |
634 | xbundle->bond = bond_ref(bond); | |
635 | } | |
636 | ||
637 | if (xbundle->lacp != lacp) { | |
638 | lacp_unref(xbundle->lacp); | |
639 | xbundle->lacp = lacp_ref(lacp); | |
640 | } | |
641 | } | |
642 | ||
643 | static void | |
644 | xlate_xport_set(struct xport *xport, odp_port_t odp_port, | |
645 | const struct netdev *netdev, const struct cfm *cfm, | |
0477baa9 | 646 | const struct bfd *bfd, const struct lldp *lldp, int stp_port_no, |
f025bcb7 | 647 | const struct rstp_port* rstp_port, |
84f0f298 RW |
648 | enum ofputil_port_config config, enum ofputil_port_state state, |
649 | bool is_tunnel, bool may_enable) | |
650 | { | |
651 | xport->config = config; | |
652 | xport->state = state; | |
653 | xport->stp_port_no = stp_port_no; | |
654 | xport->is_tunnel = is_tunnel; | |
655 | xport->may_enable = may_enable; | |
656 | xport->odp_port = odp_port; | |
657 | ||
f025bcb7 JR |
658 | if (xport->rstp_port != rstp_port) { |
659 | rstp_port_unref(xport->rstp_port); | |
660 | xport->rstp_port = rstp_port_ref(rstp_port); | |
661 | } | |
662 | ||
84f0f298 RW |
663 | if (xport->cfm != cfm) { |
664 | cfm_unref(xport->cfm); | |
665 | xport->cfm = cfm_ref(cfm); | |
666 | } | |
667 | ||
668 | if (xport->bfd != bfd) { | |
669 | bfd_unref(xport->bfd); | |
670 | xport->bfd = bfd_ref(bfd); | |
671 | } | |
672 | ||
0477baa9 DF |
673 | if (xport->lldp != lldp) { |
674 | lldp_unref(xport->lldp); | |
675 | xport->lldp = lldp_ref(lldp); | |
676 | } | |
677 | ||
84f0f298 RW |
678 | if (xport->netdev != netdev) { |
679 | netdev_close(xport->netdev); | |
680 | xport->netdev = netdev_ref(netdev); | |
681 | } | |
682 | } | |
683 | ||
684 | static void | |
685 | xlate_xbridge_copy(struct xbridge *xbridge) | |
686 | { | |
687 | struct xbundle *xbundle; | |
688 | struct xport *xport; | |
689 | struct xbridge *new_xbridge = xzalloc(sizeof *xbridge); | |
690 | new_xbridge->ofproto = xbridge->ofproto; | |
691 | new_xbridge->name = xstrdup(xbridge->name); | |
692 | xlate_xbridge_init(new_xcfg, new_xbridge); | |
693 | ||
694 | xlate_xbridge_set(new_xbridge, | |
34dd0d78 | 695 | xbridge->dpif, xbridge->ml, xbridge->stp, |
9efd308e DV |
696 | xbridge->rstp, xbridge->ms, xbridge->mbridge, |
697 | xbridge->sflow, xbridge->ipfix, xbridge->netflow, | |
b440dd8c JS |
698 | xbridge->forward_bpdu, xbridge->has_in_band, |
699 | &xbridge->support); | |
84f0f298 RW |
700 | LIST_FOR_EACH (xbundle, list_node, &xbridge->xbundles) { |
701 | xlate_xbundle_copy(new_xbridge, xbundle); | |
702 | } | |
703 | ||
704 | /* Copy xports which are not part of a xbundle */ | |
705 | HMAP_FOR_EACH (xport, ofp_node, &xbridge->xports) { | |
706 | if (!xport->xbundle) { | |
707 | xlate_xport_copy(new_xbridge, NULL, xport); | |
708 | } | |
709 | } | |
710 | } | |
711 | ||
712 | static void | |
713 | xlate_xbundle_copy(struct xbridge *xbridge, struct xbundle *xbundle) | |
714 | { | |
715 | struct xport *xport; | |
716 | struct xbundle *new_xbundle = xzalloc(sizeof *xbundle); | |
717 | new_xbundle->ofbundle = xbundle->ofbundle; | |
718 | new_xbundle->xbridge = xbridge; | |
719 | new_xbundle->name = xstrdup(xbundle->name); | |
720 | xlate_xbundle_init(new_xcfg, new_xbundle); | |
721 | ||
722 | xlate_xbundle_set(new_xbundle, xbundle->vlan_mode, | |
723 | xbundle->vlan, xbundle->trunks, | |
724 | xbundle->use_priority_tags, xbundle->bond, xbundle->lacp, | |
725 | xbundle->floodable); | |
726 | LIST_FOR_EACH (xport, bundle_node, &xbundle->xports) { | |
727 | xlate_xport_copy(xbridge, new_xbundle, xport); | |
728 | } | |
729 | } | |
730 | ||
731 | static void | |
732 | xlate_xport_copy(struct xbridge *xbridge, struct xbundle *xbundle, | |
733 | struct xport *xport) | |
734 | { | |
735 | struct skb_priority_to_dscp *pdscp, *new_pdscp; | |
736 | struct xport *new_xport = xzalloc(sizeof *xport); | |
737 | new_xport->ofport = xport->ofport; | |
738 | new_xport->ofp_port = xport->ofp_port; | |
739 | new_xport->xbridge = xbridge; | |
740 | xlate_xport_init(new_xcfg, new_xport); | |
741 | ||
742 | xlate_xport_set(new_xport, xport->odp_port, xport->netdev, xport->cfm, | |
0477baa9 DF |
743 | xport->bfd, xport->lldp, xport->stp_port_no, |
744 | xport->rstp_port, xport->config, xport->state, | |
745 | xport->is_tunnel, xport->may_enable); | |
84f0f298 RW |
746 | |
747 | if (xport->peer) { | |
748 | struct xport *peer = xport_lookup(new_xcfg, xport->peer->ofport); | |
749 | if (peer) { | |
750 | new_xport->peer = peer; | |
751 | new_xport->peer->peer = new_xport; | |
752 | } | |
753 | } | |
754 | ||
755 | if (xbundle) { | |
756 | new_xport->xbundle = xbundle; | |
757 | list_insert(&new_xport->xbundle->xports, &new_xport->bundle_node); | |
758 | } | |
759 | ||
760 | HMAP_FOR_EACH (pdscp, hmap_node, &xport->skb_priorities) { | |
761 | new_pdscp = xmalloc(sizeof *pdscp); | |
762 | new_pdscp->skb_priority = pdscp->skb_priority; | |
763 | new_pdscp->dscp = pdscp->dscp; | |
764 | hmap_insert(&new_xport->skb_priorities, &new_pdscp->hmap_node, | |
765 | hash_int(new_pdscp->skb_priority, 0)); | |
766 | } | |
767 | } | |
768 | ||
769 | /* Sets the current xlate configuration to new_xcfg and frees the old xlate | |
770 | * configuration in xcfgp. | |
771 | * | |
772 | * This needs to be called after editing the xlate configuration. | |
773 | * | |
774 | * Functions that edit the new xlate configuration are | |
775 | * xlate_<ofport/bundle/ofport>_set and xlate_<ofport/bundle/ofport>_remove. | |
776 | * | |
777 | * A sample workflow: | |
778 | * | |
779 | * xlate_txn_start(); | |
780 | * ... | |
781 | * edit_xlate_configuration(); | |
782 | * ... | |
783 | * xlate_txn_commit(); */ | |
46c88433 | 784 | void |
84f0f298 RW |
785 | xlate_txn_commit(void) |
786 | { | |
787 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
788 | ||
789 | ovsrcu_set(&xcfgp, new_xcfg); | |
40a9c4c2 AW |
790 | ovsrcu_synchronize(); |
791 | xlate_xcfg_free(xcfg); | |
84f0f298 RW |
792 | new_xcfg = NULL; |
793 | } | |
794 | ||
795 | /* Copies the current xlate configuration in xcfgp to new_xcfg. | |
796 | * | |
797 | * This needs to be called prior to editing the xlate configuration. */ | |
798 | void | |
799 | xlate_txn_start(void) | |
800 | { | |
801 | struct xbridge *xbridge; | |
802 | struct xlate_cfg *xcfg; | |
803 | ||
804 | ovs_assert(!new_xcfg); | |
805 | ||
806 | new_xcfg = xmalloc(sizeof *new_xcfg); | |
807 | hmap_init(&new_xcfg->xbridges); | |
808 | hmap_init(&new_xcfg->xbundles); | |
809 | hmap_init(&new_xcfg->xports); | |
810 | ||
811 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
812 | if (!xcfg) { | |
813 | return; | |
814 | } | |
815 | ||
816 | HMAP_FOR_EACH (xbridge, hmap_node, &xcfg->xbridges) { | |
817 | xlate_xbridge_copy(xbridge); | |
818 | } | |
819 | } | |
820 | ||
821 | ||
822 | static void | |
823 | xlate_xcfg_free(struct xlate_cfg *xcfg) | |
824 | { | |
825 | struct xbridge *xbridge, *next_xbridge; | |
826 | ||
827 | if (!xcfg) { | |
828 | return; | |
829 | } | |
830 | ||
831 | HMAP_FOR_EACH_SAFE (xbridge, next_xbridge, hmap_node, &xcfg->xbridges) { | |
832 | xlate_xbridge_remove(xcfg, xbridge); | |
833 | } | |
834 | ||
835 | hmap_destroy(&xcfg->xbridges); | |
836 | hmap_destroy(&xcfg->xbundles); | |
837 | hmap_destroy(&xcfg->xports); | |
838 | free(xcfg); | |
839 | } | |
840 | ||
841 | void | |
842 | xlate_ofproto_set(struct ofproto_dpif *ofproto, const char *name, | |
34dd0d78 | 843 | struct dpif *dpif, |
84f0f298 | 844 | const struct mac_learning *ml, struct stp *stp, |
9efd308e | 845 | struct rstp *rstp, const struct mcast_snooping *ms, |
84f0f298 RW |
846 | const struct mbridge *mbridge, |
847 | const struct dpif_sflow *sflow, | |
848 | const struct dpif_ipfix *ipfix, | |
2f47cdf4 | 849 | const struct netflow *netflow, |
b440dd8c JS |
850 | bool forward_bpdu, bool has_in_band, |
851 | const struct dpif_backer_support *support) | |
84f0f298 RW |
852 | { |
853 | struct xbridge *xbridge; | |
854 | ||
855 | ovs_assert(new_xcfg); | |
856 | ||
857 | xbridge = xbridge_lookup(new_xcfg, ofproto); | |
858 | if (!xbridge) { | |
859 | xbridge = xzalloc(sizeof *xbridge); | |
860 | xbridge->ofproto = ofproto; | |
861 | ||
862 | xlate_xbridge_init(new_xcfg, xbridge); | |
863 | } | |
864 | ||
865 | free(xbridge->name); | |
866 | xbridge->name = xstrdup(name); | |
867 | ||
34dd0d78 | 868 | xlate_xbridge_set(xbridge, dpif, ml, stp, rstp, ms, mbridge, sflow, ipfix, |
b440dd8c | 869 | netflow, forward_bpdu, has_in_band, support); |
84f0f298 RW |
870 | } |
871 | ||
872 | static void | |
873 | xlate_xbridge_remove(struct xlate_cfg *xcfg, struct xbridge *xbridge) | |
46c88433 | 874 | { |
46c88433 EJ |
875 | struct xbundle *xbundle, *next_xbundle; |
876 | struct xport *xport, *next_xport; | |
877 | ||
878 | if (!xbridge) { | |
879 | return; | |
880 | } | |
881 | ||
882 | HMAP_FOR_EACH_SAFE (xport, next_xport, ofp_node, &xbridge->xports) { | |
84f0f298 | 883 | xlate_xport_remove(xcfg, xport); |
46c88433 EJ |
884 | } |
885 | ||
886 | LIST_FOR_EACH_SAFE (xbundle, next_xbundle, list_node, &xbridge->xbundles) { | |
84f0f298 | 887 | xlate_xbundle_remove(xcfg, xbundle); |
46c88433 EJ |
888 | } |
889 | ||
84f0f298 | 890 | hmap_remove(&xcfg->xbridges, &xbridge->hmap_node); |
795cc5c1 | 891 | mac_learning_unref(xbridge->ml); |
6d95c4e8 | 892 | mcast_snooping_unref(xbridge->ms); |
795cc5c1 EJ |
893 | mbridge_unref(xbridge->mbridge); |
894 | dpif_sflow_unref(xbridge->sflow); | |
895 | dpif_ipfix_unref(xbridge->ipfix); | |
896 | stp_unref(xbridge->stp); | |
9efd308e | 897 | rstp_unref(xbridge->rstp); |
795cc5c1 | 898 | hmap_destroy(&xbridge->xports); |
46c88433 EJ |
899 | free(xbridge->name); |
900 | free(xbridge); | |
901 | } | |
902 | ||
84f0f298 RW |
903 | void |
904 | xlate_remove_ofproto(struct ofproto_dpif *ofproto) | |
905 | { | |
906 | struct xbridge *xbridge; | |
907 | ||
908 | ovs_assert(new_xcfg); | |
909 | ||
910 | xbridge = xbridge_lookup(new_xcfg, ofproto); | |
911 | xlate_xbridge_remove(new_xcfg, xbridge); | |
912 | } | |
913 | ||
46c88433 EJ |
914 | void |
915 | xlate_bundle_set(struct ofproto_dpif *ofproto, struct ofbundle *ofbundle, | |
916 | const char *name, enum port_vlan_mode vlan_mode, int vlan, | |
917 | unsigned long *trunks, bool use_priority_tags, | |
918 | const struct bond *bond, const struct lacp *lacp, | |
919 | bool floodable) | |
920 | { | |
84f0f298 | 921 | struct xbundle *xbundle; |
46c88433 | 922 | |
84f0f298 RW |
923 | ovs_assert(new_xcfg); |
924 | ||
925 | xbundle = xbundle_lookup(new_xcfg, ofbundle); | |
46c88433 EJ |
926 | if (!xbundle) { |
927 | xbundle = xzalloc(sizeof *xbundle); | |
928 | xbundle->ofbundle = ofbundle; | |
84f0f298 | 929 | xbundle->xbridge = xbridge_lookup(new_xcfg, ofproto); |
46c88433 | 930 | |
84f0f298 | 931 | xlate_xbundle_init(new_xcfg, xbundle); |
46c88433 EJ |
932 | } |
933 | ||
46c88433 EJ |
934 | free(xbundle->name); |
935 | xbundle->name = xstrdup(name); | |
936 | ||
84f0f298 RW |
937 | xlate_xbundle_set(xbundle, vlan_mode, vlan, trunks, |
938 | use_priority_tags, bond, lacp, floodable); | |
46c88433 EJ |
939 | } |
940 | ||
84f0f298 RW |
941 | static void |
942 | xlate_xbundle_remove(struct xlate_cfg *xcfg, struct xbundle *xbundle) | |
46c88433 | 943 | { |
5f03c983 | 944 | struct xport *xport; |
46c88433 EJ |
945 | |
946 | if (!xbundle) { | |
947 | return; | |
948 | } | |
949 | ||
5f03c983 | 950 | LIST_FOR_EACH_POP (xport, bundle_node, &xbundle->xports) { |
46c88433 EJ |
951 | xport->xbundle = NULL; |
952 | } | |
953 | ||
84f0f298 | 954 | hmap_remove(&xcfg->xbundles, &xbundle->hmap_node); |
46c88433 EJ |
955 | list_remove(&xbundle->list_node); |
956 | bond_unref(xbundle->bond); | |
957 | lacp_unref(xbundle->lacp); | |
958 | free(xbundle->name); | |
959 | free(xbundle); | |
960 | } | |
961 | ||
84f0f298 RW |
962 | void |
963 | xlate_bundle_remove(struct ofbundle *ofbundle) | |
964 | { | |
965 | struct xbundle *xbundle; | |
966 | ||
967 | ovs_assert(new_xcfg); | |
968 | ||
969 | xbundle = xbundle_lookup(new_xcfg, ofbundle); | |
970 | xlate_xbundle_remove(new_xcfg, xbundle); | |
971 | } | |
972 | ||
46c88433 EJ |
973 | void |
974 | xlate_ofport_set(struct ofproto_dpif *ofproto, struct ofbundle *ofbundle, | |
975 | struct ofport_dpif *ofport, ofp_port_t ofp_port, | |
976 | odp_port_t odp_port, const struct netdev *netdev, | |
977 | const struct cfm *cfm, const struct bfd *bfd, | |
0477baa9 DF |
978 | const struct lldp *lldp, struct ofport_dpif *peer, |
979 | int stp_port_no, const struct rstp_port *rstp_port, | |
55954f6e | 980 | const struct ofproto_port_queue *qdscp_list, size_t n_qdscp, |
dd8cd4b4 SH |
981 | enum ofputil_port_config config, |
982 | enum ofputil_port_state state, bool is_tunnel, | |
9d189a50 | 983 | bool may_enable) |
46c88433 | 984 | { |
55954f6e | 985 | size_t i; |
84f0f298 RW |
986 | struct xport *xport; |
987 | ||
988 | ovs_assert(new_xcfg); | |
46c88433 | 989 | |
84f0f298 | 990 | xport = xport_lookup(new_xcfg, ofport); |
46c88433 EJ |
991 | if (!xport) { |
992 | xport = xzalloc(sizeof *xport); | |
993 | xport->ofport = ofport; | |
84f0f298 | 994 | xport->xbridge = xbridge_lookup(new_xcfg, ofproto); |
46c88433 EJ |
995 | xport->ofp_port = ofp_port; |
996 | ||
84f0f298 | 997 | xlate_xport_init(new_xcfg, xport); |
46c88433 EJ |
998 | } |
999 | ||
1000 | ovs_assert(xport->ofp_port == ofp_port); | |
1001 | ||
0477baa9 DF |
1002 | xlate_xport_set(xport, odp_port, netdev, cfm, bfd, lldp, |
1003 | stp_port_no, rstp_port, config, state, is_tunnel, | |
1004 | may_enable); | |
46c88433 EJ |
1005 | |
1006 | if (xport->peer) { | |
1007 | xport->peer->peer = NULL; | |
1008 | } | |
84f0f298 | 1009 | xport->peer = xport_lookup(new_xcfg, peer); |
46c88433 EJ |
1010 | if (xport->peer) { |
1011 | xport->peer->peer = xport; | |
1012 | } | |
1013 | ||
1014 | if (xport->xbundle) { | |
1015 | list_remove(&xport->bundle_node); | |
1016 | } | |
84f0f298 | 1017 | xport->xbundle = xbundle_lookup(new_xcfg, ofbundle); |
46c88433 EJ |
1018 | if (xport->xbundle) { |
1019 | list_insert(&xport->xbundle->xports, &xport->bundle_node); | |
1020 | } | |
55954f6e EJ |
1021 | |
1022 | clear_skb_priorities(xport); | |
1023 | for (i = 0; i < n_qdscp; i++) { | |
1024 | struct skb_priority_to_dscp *pdscp; | |
1025 | uint32_t skb_priority; | |
1026 | ||
89a8a7f0 EJ |
1027 | if (dpif_queue_to_priority(xport->xbridge->dpif, qdscp_list[i].queue, |
1028 | &skb_priority)) { | |
55954f6e EJ |
1029 | continue; |
1030 | } | |
1031 | ||
1032 | pdscp = xmalloc(sizeof *pdscp); | |
1033 | pdscp->skb_priority = skb_priority; | |
1034 | pdscp->dscp = (qdscp_list[i].dscp << 2) & IP_DSCP_MASK; | |
1035 | hmap_insert(&xport->skb_priorities, &pdscp->hmap_node, | |
1036 | hash_int(pdscp->skb_priority, 0)); | |
1037 | } | |
46c88433 EJ |
1038 | } |
1039 | ||
84f0f298 RW |
1040 | static void |
1041 | xlate_xport_remove(struct xlate_cfg *xcfg, struct xport *xport) | |
46c88433 | 1042 | { |
46c88433 EJ |
1043 | if (!xport) { |
1044 | return; | |
1045 | } | |
1046 | ||
1047 | if (xport->peer) { | |
1048 | xport->peer->peer = NULL; | |
1049 | xport->peer = NULL; | |
1050 | } | |
1051 | ||
e621a12d EJ |
1052 | if (xport->xbundle) { |
1053 | list_remove(&xport->bundle_node); | |
1054 | } | |
1055 | ||
55954f6e EJ |
1056 | clear_skb_priorities(xport); |
1057 | hmap_destroy(&xport->skb_priorities); | |
1058 | ||
84f0f298 | 1059 | hmap_remove(&xcfg->xports, &xport->hmap_node); |
46c88433 EJ |
1060 | hmap_remove(&xport->xbridge->xports, &xport->ofp_node); |
1061 | ||
1062 | netdev_close(xport->netdev); | |
f025bcb7 | 1063 | rstp_port_unref(xport->rstp_port); |
46c88433 EJ |
1064 | cfm_unref(xport->cfm); |
1065 | bfd_unref(xport->bfd); | |
0477baa9 | 1066 | lldp_unref(xport->lldp); |
46c88433 EJ |
1067 | free(xport); |
1068 | } | |
1069 | ||
84f0f298 RW |
1070 | void |
1071 | xlate_ofport_remove(struct ofport_dpif *ofport) | |
1072 | { | |
1073 | struct xport *xport; | |
1074 | ||
1075 | ovs_assert(new_xcfg); | |
1076 | ||
1077 | xport = xport_lookup(new_xcfg, ofport); | |
1078 | xlate_xport_remove(new_xcfg, xport); | |
1079 | } | |
1080 | ||
ef377a58 JR |
1081 | static struct ofproto_dpif * |
1082 | xlate_lookup_ofproto_(const struct dpif_backer *backer, const struct flow *flow, | |
1083 | ofp_port_t *ofp_in_port, const struct xport **xportp) | |
1084 | { | |
e672ff9b | 1085 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
ef377a58 | 1086 | const struct xport *xport; |
f9038ef6 | 1087 | |
e672ff9b JR |
1088 | xport = xport_lookup(xcfg, tnl_port_should_receive(flow) |
1089 | ? tnl_port_receive(flow) | |
1090 | : odp_port_to_ofport(backer, flow->in_port.odp_port)); | |
1091 | if (OVS_UNLIKELY(!xport)) { | |
1092 | return NULL; | |
ef377a58 | 1093 | } |
e672ff9b | 1094 | *xportp = xport; |
f9038ef6 | 1095 | if (ofp_in_port) { |
e672ff9b | 1096 | *ofp_in_port = xport->ofp_port; |
f9038ef6 | 1097 | } |
e672ff9b | 1098 | return xport->xbridge->ofproto; |
ef377a58 JR |
1099 | } |
1100 | ||
1101 | /* Given a datapath and flow metadata ('backer', and 'flow' respectively) | |
1102 | * returns the corresponding struct ofproto_dpif and OpenFlow port number. */ | |
1103 | struct ofproto_dpif * | |
1104 | xlate_lookup_ofproto(const struct dpif_backer *backer, const struct flow *flow, | |
1105 | ofp_port_t *ofp_in_port) | |
1106 | { | |
1107 | const struct xport *xport; | |
1108 | ||
1109 | return xlate_lookup_ofproto_(backer, flow, ofp_in_port, &xport); | |
1110 | } | |
1111 | ||
cc377352 | 1112 | /* Given a datapath and flow metadata ('backer', and 'flow' respectively), |
ef377a58 | 1113 | * optionally populates 'ofproto' with the ofproto_dpif, 'ofp_in_port' with the |
cc377352 | 1114 | * openflow in_port, and 'ipfix', 'sflow', and 'netflow' with the appropriate |
dcc2c6cd JR |
1115 | * handles for those protocols if they're enabled. Caller may use the returned |
1116 | * pointers until quiescing, for longer term use additional references must | |
1117 | * be taken. | |
8449c4d6 | 1118 | * |
f9038ef6 | 1119 | * Returns 0 if successful, ENODEV if the parsed flow has no associated ofproto. |
ef377a58 | 1120 | */ |
8449c4d6 | 1121 | int |
5c476ea3 JR |
1122 | xlate_lookup(const struct dpif_backer *backer, const struct flow *flow, |
1123 | struct ofproto_dpif **ofprotop, struct dpif_ipfix **ipfix, | |
1124 | struct dpif_sflow **sflow, struct netflow **netflow, | |
1125 | ofp_port_t *ofp_in_port) | |
8449c4d6 | 1126 | { |
ef377a58 | 1127 | struct ofproto_dpif *ofproto; |
84f0f298 | 1128 | const struct xport *xport; |
8449c4d6 | 1129 | |
ef377a58 | 1130 | ofproto = xlate_lookup_ofproto_(backer, flow, ofp_in_port, &xport); |
8449c4d6 | 1131 | |
f9038ef6 | 1132 | if (!ofproto) { |
cc377352 | 1133 | return ENODEV; |
8449c4d6 | 1134 | } |
8449c4d6 | 1135 | |
ef377a58 JR |
1136 | if (ofprotop) { |
1137 | *ofprotop = ofproto; | |
8449c4d6 EJ |
1138 | } |
1139 | ||
1dfdb9b3 | 1140 | if (ipfix) { |
f9038ef6 | 1141 | *ipfix = xport ? xport->xbridge->ipfix : NULL; |
1dfdb9b3 EJ |
1142 | } |
1143 | ||
1144 | if (sflow) { | |
f9038ef6 | 1145 | *sflow = xport ? xport->xbridge->sflow : NULL; |
1dfdb9b3 EJ |
1146 | } |
1147 | ||
1148 | if (netflow) { | |
f9038ef6 | 1149 | *netflow = xport ? xport->xbridge->netflow : NULL; |
1dfdb9b3 | 1150 | } |
f9038ef6 | 1151 | |
cc377352 | 1152 | return 0; |
8449c4d6 EJ |
1153 | } |
1154 | ||
46c88433 | 1155 | static struct xbridge * |
84f0f298 | 1156 | xbridge_lookup(struct xlate_cfg *xcfg, const struct ofproto_dpif *ofproto) |
46c88433 | 1157 | { |
84f0f298 | 1158 | struct hmap *xbridges; |
46c88433 EJ |
1159 | struct xbridge *xbridge; |
1160 | ||
84f0f298 | 1161 | if (!ofproto || !xcfg) { |
5e6af486 EJ |
1162 | return NULL; |
1163 | } | |
1164 | ||
84f0f298 RW |
1165 | xbridges = &xcfg->xbridges; |
1166 | ||
46c88433 | 1167 | HMAP_FOR_EACH_IN_BUCKET (xbridge, hmap_node, hash_pointer(ofproto, 0), |
84f0f298 | 1168 | xbridges) { |
46c88433 EJ |
1169 | if (xbridge->ofproto == ofproto) { |
1170 | return xbridge; | |
1171 | } | |
1172 | } | |
1173 | return NULL; | |
1174 | } | |
1175 | ||
1176 | static struct xbundle * | |
84f0f298 | 1177 | xbundle_lookup(struct xlate_cfg *xcfg, const struct ofbundle *ofbundle) |
46c88433 | 1178 | { |
84f0f298 | 1179 | struct hmap *xbundles; |
46c88433 EJ |
1180 | struct xbundle *xbundle; |
1181 | ||
84f0f298 | 1182 | if (!ofbundle || !xcfg) { |
5e6af486 EJ |
1183 | return NULL; |
1184 | } | |
1185 | ||
84f0f298 RW |
1186 | xbundles = &xcfg->xbundles; |
1187 | ||
46c88433 | 1188 | HMAP_FOR_EACH_IN_BUCKET (xbundle, hmap_node, hash_pointer(ofbundle, 0), |
84f0f298 | 1189 | xbundles) { |
46c88433 EJ |
1190 | if (xbundle->ofbundle == ofbundle) { |
1191 | return xbundle; | |
1192 | } | |
1193 | } | |
1194 | return NULL; | |
1195 | } | |
1196 | ||
1197 | static struct xport * | |
84f0f298 | 1198 | xport_lookup(struct xlate_cfg *xcfg, const struct ofport_dpif *ofport) |
46c88433 | 1199 | { |
84f0f298 | 1200 | struct hmap *xports; |
46c88433 EJ |
1201 | struct xport *xport; |
1202 | ||
84f0f298 | 1203 | if (!ofport || !xcfg) { |
5e6af486 EJ |
1204 | return NULL; |
1205 | } | |
1206 | ||
84f0f298 RW |
1207 | xports = &xcfg->xports; |
1208 | ||
46c88433 | 1209 | HMAP_FOR_EACH_IN_BUCKET (xport, hmap_node, hash_pointer(ofport, 0), |
84f0f298 | 1210 | xports) { |
46c88433 EJ |
1211 | if (xport->ofport == ofport) { |
1212 | return xport; | |
1213 | } | |
1214 | } | |
1215 | return NULL; | |
1216 | } | |
1217 | ||
40085e56 EJ |
1218 | static struct stp_port * |
1219 | xport_get_stp_port(const struct xport *xport) | |
1220 | { | |
92cf817b | 1221 | return xport->xbridge->stp && xport->stp_port_no != -1 |
40085e56 EJ |
1222 | ? stp_get_port(xport->xbridge->stp, xport->stp_port_no) |
1223 | : NULL; | |
1224 | } | |
9d189a50 | 1225 | |
0d1cee12 | 1226 | static bool |
9d189a50 EJ |
1227 | xport_stp_learn_state(const struct xport *xport) |
1228 | { | |
40085e56 | 1229 | struct stp_port *sp = xport_get_stp_port(xport); |
4b5f1996 DV |
1230 | return sp |
1231 | ? stp_learn_in_state(stp_port_get_state(sp)) | |
1232 | : true; | |
9d189a50 EJ |
1233 | } |
1234 | ||
1235 | static bool | |
1236 | xport_stp_forward_state(const struct xport *xport) | |
1237 | { | |
40085e56 | 1238 | struct stp_port *sp = xport_get_stp_port(xport); |
4b5f1996 DV |
1239 | return sp |
1240 | ? stp_forward_in_state(stp_port_get_state(sp)) | |
1241 | : true; | |
9d189a50 EJ |
1242 | } |
1243 | ||
0d1cee12 | 1244 | static bool |
bacdb85a | 1245 | xport_stp_should_forward_bpdu(const struct xport *xport) |
0d1cee12 K |
1246 | { |
1247 | struct stp_port *sp = xport_get_stp_port(xport); | |
bacdb85a | 1248 | return stp_should_forward_bpdu(sp ? stp_port_get_state(sp) : STP_DISABLED); |
0d1cee12 K |
1249 | } |
1250 | ||
9d189a50 EJ |
1251 | /* Returns true if STP should process 'flow'. Sets fields in 'wc' that |
1252 | * were used to make the determination.*/ | |
1253 | static bool | |
1254 | stp_should_process_flow(const struct flow *flow, struct flow_wildcards *wc) | |
1255 | { | |
bbbca389 | 1256 | /* is_stp() also checks dl_type, but dl_type is always set in 'wc'. */ |
9d189a50 | 1257 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); |
bbbca389 | 1258 | return is_stp(flow); |
9d189a50 EJ |
1259 | } |
1260 | ||
1261 | static void | |
cf62fa4c | 1262 | stp_process_packet(const struct xport *xport, const struct dp_packet *packet) |
9d189a50 | 1263 | { |
40085e56 | 1264 | struct stp_port *sp = xport_get_stp_port(xport); |
cf62fa4c PS |
1265 | struct dp_packet payload = *packet; |
1266 | struct eth_header *eth = dp_packet_data(&payload); | |
9d189a50 EJ |
1267 | |
1268 | /* Sink packets on ports that have STP disabled when the bridge has | |
1269 | * STP enabled. */ | |
1270 | if (!sp || stp_port_get_state(sp) == STP_DISABLED) { | |
1271 | return; | |
1272 | } | |
1273 | ||
1274 | /* Trim off padding on payload. */ | |
cf62fa4c PS |
1275 | if (dp_packet_size(&payload) > ntohs(eth->eth_type) + ETH_HEADER_LEN) { |
1276 | dp_packet_set_size(&payload, ntohs(eth->eth_type) + ETH_HEADER_LEN); | |
9d189a50 EJ |
1277 | } |
1278 | ||
cf62fa4c PS |
1279 | if (dp_packet_try_pull(&payload, ETH_HEADER_LEN + LLC_HEADER_LEN)) { |
1280 | stp_received_bpdu(sp, dp_packet_data(&payload), dp_packet_size(&payload)); | |
9d189a50 EJ |
1281 | } |
1282 | } | |
1283 | ||
f025bcb7 JR |
1284 | static enum rstp_state |
1285 | xport_get_rstp_port_state(const struct xport *xport) | |
9efd308e | 1286 | { |
f025bcb7 JR |
1287 | return xport->rstp_port |
1288 | ? rstp_port_get_state(xport->rstp_port) | |
1289 | : RSTP_DISABLED; | |
9efd308e DV |
1290 | } |
1291 | ||
1292 | static bool | |
1293 | xport_rstp_learn_state(const struct xport *xport) | |
1294 | { | |
4b5f1996 DV |
1295 | return xport->xbridge->rstp && xport->rstp_port |
1296 | ? rstp_learn_in_state(xport_get_rstp_port_state(xport)) | |
1297 | : true; | |
9efd308e DV |
1298 | } |
1299 | ||
1300 | static bool | |
1301 | xport_rstp_forward_state(const struct xport *xport) | |
1302 | { | |
4b5f1996 DV |
1303 | return xport->xbridge->rstp && xport->rstp_port |
1304 | ? rstp_forward_in_state(xport_get_rstp_port_state(xport)) | |
1305 | : true; | |
9efd308e DV |
1306 | } |
1307 | ||
1308 | static bool | |
1309 | xport_rstp_should_manage_bpdu(const struct xport *xport) | |
1310 | { | |
f025bcb7 | 1311 | return rstp_should_manage_bpdu(xport_get_rstp_port_state(xport)); |
9efd308e DV |
1312 | } |
1313 | ||
1314 | static void | |
cf62fa4c | 1315 | rstp_process_packet(const struct xport *xport, const struct dp_packet *packet) |
9efd308e | 1316 | { |
cf62fa4c PS |
1317 | struct dp_packet payload = *packet; |
1318 | struct eth_header *eth = dp_packet_data(&payload); | |
9efd308e | 1319 | |
f025bcb7 JR |
1320 | /* Sink packets on ports that have no RSTP. */ |
1321 | if (!xport->rstp_port) { | |
9efd308e DV |
1322 | return; |
1323 | } | |
1324 | ||
1325 | /* Trim off padding on payload. */ | |
cf62fa4c PS |
1326 | if (dp_packet_size(&payload) > ntohs(eth->eth_type) + ETH_HEADER_LEN) { |
1327 | dp_packet_set_size(&payload, ntohs(eth->eth_type) + ETH_HEADER_LEN); | |
9efd308e DV |
1328 | } |
1329 | ||
cf62fa4c PS |
1330 | if (dp_packet_try_pull(&payload, ETH_HEADER_LEN + LLC_HEADER_LEN)) { |
1331 | rstp_port_received_bpdu(xport->rstp_port, dp_packet_data(&payload), | |
1332 | dp_packet_size(&payload)); | |
9efd308e DV |
1333 | } |
1334 | } | |
1335 | ||
46c88433 EJ |
1336 | static struct xport * |
1337 | get_ofp_port(const struct xbridge *xbridge, ofp_port_t ofp_port) | |
1338 | { | |
1339 | struct xport *xport; | |
1340 | ||
1341 | HMAP_FOR_EACH_IN_BUCKET (xport, ofp_node, hash_ofp_port(ofp_port), | |
1342 | &xbridge->xports) { | |
1343 | if (xport->ofp_port == ofp_port) { | |
1344 | return xport; | |
1345 | } | |
1346 | } | |
1347 | return NULL; | |
1348 | } | |
1349 | ||
1350 | static odp_port_t | |
1351 | ofp_port_to_odp_port(const struct xbridge *xbridge, ofp_port_t ofp_port) | |
1352 | { | |
1353 | const struct xport *xport = get_ofp_port(xbridge, ofp_port); | |
1354 | return xport ? xport->odp_port : ODPP_NONE; | |
1355 | } | |
1356 | ||
dd8cd4b4 SH |
1357 | static bool |
1358 | odp_port_is_alive(const struct xlate_ctx *ctx, ofp_port_t ofp_port) | |
1359 | { | |
086fa873 BP |
1360 | struct xport *xport = get_ofp_port(ctx->xbridge, ofp_port); |
1361 | return xport && xport->may_enable; | |
dd8cd4b4 SH |
1362 | } |
1363 | ||
1e684d7d | 1364 | static struct ofputil_bucket * |
dd8cd4b4 SH |
1365 | group_first_live_bucket(const struct xlate_ctx *, const struct group_dpif *, |
1366 | int depth); | |
1367 | ||
1368 | static bool | |
1369 | group_is_alive(const struct xlate_ctx *ctx, uint32_t group_id, int depth) | |
1370 | { | |
1371 | struct group_dpif *group; | |
dd8cd4b4 | 1372 | |
dc25893e AZ |
1373 | if (group_dpif_lookup(ctx->xbridge->ofproto, group_id, &group)) { |
1374 | struct ofputil_bucket *bucket; | |
dd8cd4b4 | 1375 | |
dc25893e AZ |
1376 | bucket = group_first_live_bucket(ctx, group, depth); |
1377 | group_dpif_unref(group); | |
1378 | return bucket == NULL; | |
1379 | } | |
dd8cd4b4 | 1380 | |
dc25893e | 1381 | return false; |
dd8cd4b4 SH |
1382 | } |
1383 | ||
1384 | #define MAX_LIVENESS_RECURSION 128 /* Arbitrary limit */ | |
1385 | ||
1386 | static bool | |
1387 | bucket_is_alive(const struct xlate_ctx *ctx, | |
1e684d7d | 1388 | struct ofputil_bucket *bucket, int depth) |
dd8cd4b4 SH |
1389 | { |
1390 | if (depth >= MAX_LIVENESS_RECURSION) { | |
1391 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); | |
1392 | ||
1393 | VLOG_WARN_RL(&rl, "bucket chaining exceeded %d links", | |
1394 | MAX_LIVENESS_RECURSION); | |
1395 | return false; | |
1396 | } | |
1397 | ||
fdb1999b AZ |
1398 | return (!ofputil_bucket_has_liveness(bucket) |
1399 | || (bucket->watch_port != OFPP_ANY | |
1400 | && odp_port_is_alive(ctx, bucket->watch_port)) | |
1401 | || (bucket->watch_group != OFPG_ANY | |
1402 | && group_is_alive(ctx, bucket->watch_group, depth + 1))); | |
dd8cd4b4 SH |
1403 | } |
1404 | ||
1e684d7d | 1405 | static struct ofputil_bucket * |
dd8cd4b4 SH |
1406 | group_first_live_bucket(const struct xlate_ctx *ctx, |
1407 | const struct group_dpif *group, int depth) | |
1408 | { | |
1409 | struct ofputil_bucket *bucket; | |
ca6ba700 | 1410 | const struct ovs_list *buckets; |
dd8cd4b4 SH |
1411 | |
1412 | group_dpif_get_buckets(group, &buckets); | |
1413 | LIST_FOR_EACH (bucket, list_node, buckets) { | |
1414 | if (bucket_is_alive(ctx, bucket, depth)) { | |
1415 | return bucket; | |
1416 | } | |
1417 | } | |
1418 | ||
1419 | return NULL; | |
1420 | } | |
1421 | ||
1e684d7d | 1422 | static struct ofputil_bucket * |
fe7e5749 SH |
1423 | group_best_live_bucket(const struct xlate_ctx *ctx, |
1424 | const struct group_dpif *group, | |
1425 | uint32_t basis) | |
1426 | { | |
1e684d7d | 1427 | struct ofputil_bucket *best_bucket = NULL; |
fe7e5749 SH |
1428 | uint32_t best_score = 0; |
1429 | int i = 0; | |
1430 | ||
1e684d7d | 1431 | struct ofputil_bucket *bucket; |
ca6ba700 | 1432 | const struct ovs_list *buckets; |
fe7e5749 SH |
1433 | |
1434 | group_dpif_get_buckets(group, &buckets); | |
1435 | LIST_FOR_EACH (bucket, list_node, buckets) { | |
1436 | if (bucket_is_alive(ctx, bucket, 0)) { | |
7cb279c2 | 1437 | uint32_t score = (hash_int(i, basis) & 0xffff) * bucket->weight; |
fe7e5749 SH |
1438 | if (score >= best_score) { |
1439 | best_bucket = bucket; | |
1440 | best_score = score; | |
1441 | } | |
1442 | } | |
1443 | i++; | |
1444 | } | |
1445 | ||
1446 | return best_bucket; | |
1447 | } | |
1448 | ||
9583bc14 | 1449 | static bool |
46c88433 | 1450 | xbundle_trunks_vlan(const struct xbundle *bundle, uint16_t vlan) |
9583bc14 EJ |
1451 | { |
1452 | return (bundle->vlan_mode != PORT_VLAN_ACCESS | |
1453 | && (!bundle->trunks || bitmap_is_set(bundle->trunks, vlan))); | |
1454 | } | |
1455 | ||
1456 | static bool | |
46c88433 EJ |
1457 | xbundle_includes_vlan(const struct xbundle *xbundle, uint16_t vlan) |
1458 | { | |
1459 | return vlan == xbundle->vlan || xbundle_trunks_vlan(xbundle, vlan); | |
1460 | } | |
1461 | ||
1462 | static mirror_mask_t | |
1463 | xbundle_mirror_out(const struct xbridge *xbridge, struct xbundle *xbundle) | |
1464 | { | |
1465 | return xbundle != &ofpp_none_bundle | |
1466 | ? mirror_bundle_out(xbridge->mbridge, xbundle->ofbundle) | |
1467 | : 0; | |
1468 | } | |
1469 | ||
1470 | static mirror_mask_t | |
1471 | xbundle_mirror_src(const struct xbridge *xbridge, struct xbundle *xbundle) | |
9583bc14 | 1472 | { |
46c88433 EJ |
1473 | return xbundle != &ofpp_none_bundle |
1474 | ? mirror_bundle_src(xbridge->mbridge, xbundle->ofbundle) | |
1475 | : 0; | |
9583bc14 EJ |
1476 | } |
1477 | ||
46c88433 EJ |
1478 | static mirror_mask_t |
1479 | xbundle_mirror_dst(const struct xbridge *xbridge, struct xbundle *xbundle) | |
9583bc14 | 1480 | { |
46c88433 EJ |
1481 | return xbundle != &ofpp_none_bundle |
1482 | ? mirror_bundle_dst(xbridge->mbridge, xbundle->ofbundle) | |
1483 | : 0; | |
1484 | } | |
1485 | ||
1486 | static struct xbundle * | |
1487 | lookup_input_bundle(const struct xbridge *xbridge, ofp_port_t in_port, | |
1488 | bool warn, struct xport **in_xportp) | |
1489 | { | |
1490 | struct xport *xport; | |
9583bc14 EJ |
1491 | |
1492 | /* Find the port and bundle for the received packet. */ | |
46c88433 EJ |
1493 | xport = get_ofp_port(xbridge, in_port); |
1494 | if (in_xportp) { | |
1495 | *in_xportp = xport; | |
9583bc14 | 1496 | } |
46c88433 EJ |
1497 | if (xport && xport->xbundle) { |
1498 | return xport->xbundle; | |
9583bc14 EJ |
1499 | } |
1500 | ||
6362203b YT |
1501 | /* Special-case OFPP_NONE (OF1.0) and OFPP_CONTROLLER (OF1.1+), |
1502 | * which a controller may use as the ingress port for traffic that | |
1503 | * it is sourcing. */ | |
1504 | if (in_port == OFPP_CONTROLLER || in_port == OFPP_NONE) { | |
9583bc14 EJ |
1505 | return &ofpp_none_bundle; |
1506 | } | |
1507 | ||
1508 | /* Odd. A few possible reasons here: | |
1509 | * | |
1510 | * - We deleted a port but there are still a few packets queued up | |
1511 | * from it. | |
1512 | * | |
1513 | * - Someone externally added a port (e.g. "ovs-dpctl add-if") that | |
1514 | * we don't know about. | |
1515 | * | |
1516 | * - The ofproto client didn't configure the port as part of a bundle. | |
1517 | * This is particularly likely to happen if a packet was received on the | |
1518 | * port after it was created, but before the client had a chance to | |
1519 | * configure its bundle. | |
1520 | */ | |
1521 | if (warn) { | |
1522 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
1523 | ||
1524 | VLOG_WARN_RL(&rl, "bridge %s: received packet on unknown " | |
46c88433 | 1525 | "port %"PRIu16, xbridge->name, in_port); |
9583bc14 EJ |
1526 | } |
1527 | return NULL; | |
1528 | } | |
1529 | ||
1530 | static void | |
1531 | add_mirror_actions(struct xlate_ctx *ctx, const struct flow *orig_flow) | |
1532 | { | |
46c88433 | 1533 | const struct xbridge *xbridge = ctx->xbridge; |
9583bc14 | 1534 | mirror_mask_t mirrors; |
46c88433 | 1535 | struct xbundle *in_xbundle; |
9583bc14 EJ |
1536 | uint16_t vlan; |
1537 | uint16_t vid; | |
cdf5d3a5 EJ |
1538 | |
1539 | mirrors = ctx->xout->mirrors; | |
1540 | ctx->xout->mirrors = 0; | |
9583bc14 | 1541 | |
46c88433 EJ |
1542 | in_xbundle = lookup_input_bundle(xbridge, orig_flow->in_port.ofp_port, |
1543 | ctx->xin->packet != NULL, NULL); | |
1544 | if (!in_xbundle) { | |
9583bc14 EJ |
1545 | return; |
1546 | } | |
46c88433 | 1547 | mirrors |= xbundle_mirror_src(xbridge, in_xbundle); |
9583bc14 EJ |
1548 | |
1549 | /* Drop frames on bundles reserved for mirroring. */ | |
46c88433 | 1550 | if (xbundle_mirror_out(xbridge, in_xbundle)) { |
9583bc14 EJ |
1551 | if (ctx->xin->packet != NULL) { |
1552 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
1553 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet received on port " | |
1554 | "%s, which is reserved exclusively for mirroring", | |
46c88433 | 1555 | ctx->xbridge->name, in_xbundle->name); |
9583bc14 | 1556 | } |
1520ef4f | 1557 | ofpbuf_clear(ctx->odp_actions); |
9583bc14 EJ |
1558 | return; |
1559 | } | |
1560 | ||
1561 | /* Check VLAN. */ | |
1562 | vid = vlan_tci_to_vid(orig_flow->vlan_tci); | |
46c88433 | 1563 | if (!input_vid_is_valid(vid, in_xbundle, ctx->xin->packet != NULL)) { |
9583bc14 EJ |
1564 | return; |
1565 | } | |
46c88433 | 1566 | vlan = input_vid_to_vlan(in_xbundle, vid); |
9583bc14 | 1567 | |
9583bc14 EJ |
1568 | if (!mirrors) { |
1569 | return; | |
1570 | } | |
1571 | ||
1572 | /* Restore the original packet before adding the mirror actions. */ | |
1573 | ctx->xin->flow = *orig_flow; | |
1574 | ||
1575 | while (mirrors) { | |
ec7ceaed EJ |
1576 | mirror_mask_t dup_mirrors; |
1577 | struct ofbundle *out; | |
a4547540 | 1578 | const unsigned long *vlans; |
ec7ceaed EJ |
1579 | bool vlan_mirrored; |
1580 | bool has_mirror; | |
1581 | int out_vlan; | |
1582 | ||
4b6ab2b0 | 1583 | has_mirror = mirror_get(xbridge->mbridge, raw_ctz(mirrors), |
ec7ceaed EJ |
1584 | &vlans, &dup_mirrors, &out, &out_vlan); |
1585 | ovs_assert(has_mirror); | |
1586 | ||
1587 | if (vlans) { | |
49a73e0c | 1588 | ctx->wc->masks.vlan_tci |= htons(VLAN_CFI | VLAN_VID_MASK); |
9583bc14 | 1589 | } |
ec7ceaed | 1590 | vlan_mirrored = !vlans || bitmap_is_set(vlans, vlan); |
9583bc14 | 1591 | |
ec7ceaed | 1592 | if (!vlan_mirrored) { |
9583bc14 EJ |
1593 | mirrors = zero_rightmost_1bit(mirrors); |
1594 | continue; | |
1595 | } | |
1596 | ||
ec7ceaed EJ |
1597 | mirrors &= ~dup_mirrors; |
1598 | ctx->xout->mirrors |= dup_mirrors; | |
1599 | if (out) { | |
84f0f298 RW |
1600 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
1601 | struct xbundle *out_xbundle = xbundle_lookup(xcfg, out); | |
46c88433 EJ |
1602 | if (out_xbundle) { |
1603 | output_normal(ctx, out_xbundle, vlan); | |
1604 | } | |
ec7ceaed | 1605 | } else if (vlan != out_vlan |
9583bc14 | 1606 | && !eth_addr_is_reserved(orig_flow->dl_dst)) { |
46c88433 | 1607 | struct xbundle *xbundle; |
9583bc14 | 1608 | |
46c88433 EJ |
1609 | LIST_FOR_EACH (xbundle, list_node, &xbridge->xbundles) { |
1610 | if (xbundle_includes_vlan(xbundle, out_vlan) | |
1611 | && !xbundle_mirror_out(xbridge, xbundle)) { | |
1612 | output_normal(ctx, xbundle, out_vlan); | |
9583bc14 EJ |
1613 | } |
1614 | } | |
1615 | } | |
1616 | } | |
1617 | } | |
1618 | ||
1619 | /* Given 'vid', the VID obtained from the 802.1Q header that was received as | |
46c88433 | 1620 | * part of a packet (specify 0 if there was no 802.1Q header), and 'in_xbundle', |
9583bc14 EJ |
1621 | * the bundle on which the packet was received, returns the VLAN to which the |
1622 | * packet belongs. | |
1623 | * | |
1624 | * Both 'vid' and the return value are in the range 0...4095. */ | |
1625 | static uint16_t | |
46c88433 | 1626 | input_vid_to_vlan(const struct xbundle *in_xbundle, uint16_t vid) |
9583bc14 | 1627 | { |
46c88433 | 1628 | switch (in_xbundle->vlan_mode) { |
9583bc14 | 1629 | case PORT_VLAN_ACCESS: |
46c88433 | 1630 | return in_xbundle->vlan; |
9583bc14 EJ |
1631 | break; |
1632 | ||
1633 | case PORT_VLAN_TRUNK: | |
1634 | return vid; | |
1635 | ||
1636 | case PORT_VLAN_NATIVE_UNTAGGED: | |
1637 | case PORT_VLAN_NATIVE_TAGGED: | |
46c88433 | 1638 | return vid ? vid : in_xbundle->vlan; |
9583bc14 EJ |
1639 | |
1640 | default: | |
428b2edd | 1641 | OVS_NOT_REACHED(); |
9583bc14 EJ |
1642 | } |
1643 | } | |
1644 | ||
46c88433 | 1645 | /* Checks whether a packet with the given 'vid' may ingress on 'in_xbundle'. |
9583bc14 EJ |
1646 | * If so, returns true. Otherwise, returns false and, if 'warn' is true, logs |
1647 | * a warning. | |
1648 | * | |
1649 | * 'vid' should be the VID obtained from the 802.1Q header that was received as | |
1650 | * part of a packet (specify 0 if there was no 802.1Q header), in the range | |
1651 | * 0...4095. */ | |
1652 | static bool | |
46c88433 | 1653 | input_vid_is_valid(uint16_t vid, struct xbundle *in_xbundle, bool warn) |
9583bc14 EJ |
1654 | { |
1655 | /* Allow any VID on the OFPP_NONE port. */ | |
46c88433 | 1656 | if (in_xbundle == &ofpp_none_bundle) { |
9583bc14 EJ |
1657 | return true; |
1658 | } | |
1659 | ||
46c88433 | 1660 | switch (in_xbundle->vlan_mode) { |
9583bc14 EJ |
1661 | case PORT_VLAN_ACCESS: |
1662 | if (vid) { | |
1663 | if (warn) { | |
1664 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
46c88433 | 1665 | VLOG_WARN_RL(&rl, "dropping VLAN %"PRIu16" tagged " |
9583bc14 | 1666 | "packet received on port %s configured as VLAN " |
46c88433 EJ |
1667 | "%"PRIu16" access port", vid, in_xbundle->name, |
1668 | in_xbundle->vlan); | |
9583bc14 EJ |
1669 | } |
1670 | return false; | |
1671 | } | |
1672 | return true; | |
1673 | ||
1674 | case PORT_VLAN_NATIVE_UNTAGGED: | |
1675 | case PORT_VLAN_NATIVE_TAGGED: | |
1676 | if (!vid) { | |
1677 | /* Port must always carry its native VLAN. */ | |
1678 | return true; | |
1679 | } | |
1680 | /* Fall through. */ | |
1681 | case PORT_VLAN_TRUNK: | |
46c88433 | 1682 | if (!xbundle_includes_vlan(in_xbundle, vid)) { |
9583bc14 EJ |
1683 | if (warn) { |
1684 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
46c88433 | 1685 | VLOG_WARN_RL(&rl, "dropping VLAN %"PRIu16" packet " |
9583bc14 | 1686 | "received on port %s not configured for trunking " |
46c88433 | 1687 | "VLAN %"PRIu16, vid, in_xbundle->name, vid); |
9583bc14 EJ |
1688 | } |
1689 | return false; | |
1690 | } | |
1691 | return true; | |
1692 | ||
1693 | default: | |
428b2edd | 1694 | OVS_NOT_REACHED(); |
9583bc14 EJ |
1695 | } |
1696 | ||
1697 | } | |
1698 | ||
1699 | /* Given 'vlan', the VLAN that a packet belongs to, and | |
46c88433 | 1700 | * 'out_xbundle', a bundle on which the packet is to be output, returns the VID |
9583bc14 EJ |
1701 | * that should be included in the 802.1Q header. (If the return value is 0, |
1702 | * then the 802.1Q header should only be included in the packet if there is a | |
1703 | * nonzero PCP.) | |
1704 | * | |
1705 | * Both 'vlan' and the return value are in the range 0...4095. */ | |
1706 | static uint16_t | |
46c88433 | 1707 | output_vlan_to_vid(const struct xbundle *out_xbundle, uint16_t vlan) |
9583bc14 | 1708 | { |
46c88433 | 1709 | switch (out_xbundle->vlan_mode) { |
9583bc14 EJ |
1710 | case PORT_VLAN_ACCESS: |
1711 | return 0; | |
1712 | ||
1713 | case PORT_VLAN_TRUNK: | |
1714 | case PORT_VLAN_NATIVE_TAGGED: | |
1715 | return vlan; | |
1716 | ||
1717 | case PORT_VLAN_NATIVE_UNTAGGED: | |
46c88433 | 1718 | return vlan == out_xbundle->vlan ? 0 : vlan; |
9583bc14 EJ |
1719 | |
1720 | default: | |
428b2edd | 1721 | OVS_NOT_REACHED(); |
9583bc14 EJ |
1722 | } |
1723 | } | |
1724 | ||
1725 | static void | |
46c88433 | 1726 | output_normal(struct xlate_ctx *ctx, const struct xbundle *out_xbundle, |
9583bc14 EJ |
1727 | uint16_t vlan) |
1728 | { | |
33bf9176 | 1729 | ovs_be16 *flow_tci = &ctx->xin->flow.vlan_tci; |
9583bc14 EJ |
1730 | uint16_t vid; |
1731 | ovs_be16 tci, old_tci; | |
46c88433 | 1732 | struct xport *xport; |
e93ef1c7 JR |
1733 | struct xlate_bond_recirc xr; |
1734 | bool use_recirc = false; | |
9583bc14 | 1735 | |
46c88433 EJ |
1736 | vid = output_vlan_to_vid(out_xbundle, vlan); |
1737 | if (list_is_empty(&out_xbundle->xports)) { | |
1738 | /* Partially configured bundle with no slaves. Drop the packet. */ | |
1739 | return; | |
1740 | } else if (!out_xbundle->bond) { | |
1741 | xport = CONTAINER_OF(list_front(&out_xbundle->xports), struct xport, | |
1742 | bundle_node); | |
9583bc14 | 1743 | } else { |
84f0f298 | 1744 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
49a73e0c | 1745 | struct flow_wildcards *wc = ctx->wc; |
84f0f298 | 1746 | struct ofport_dpif *ofport; |
adcf00ba | 1747 | |
2494ccd7 | 1748 | if (ctx->xbridge->support.odp.recirc) { |
e93ef1c7 JR |
1749 | use_recirc = bond_may_recirc( |
1750 | out_xbundle->bond, &xr.recirc_id, &xr.hash_basis); | |
adcf00ba | 1751 | |
e93ef1c7 | 1752 | if (use_recirc) { |
adcf00ba | 1753 | /* Only TCP mode uses recirculation. */ |
e93ef1c7 | 1754 | xr.hash_alg = OVS_HASH_ALG_L4; |
adcf00ba | 1755 | bond_update_post_recirc_rules(out_xbundle->bond, false); |
54ecb5a2 AZ |
1756 | |
1757 | /* Recirculation does not require unmasking hash fields. */ | |
1758 | wc = NULL; | |
adcf00ba AZ |
1759 | } |
1760 | } | |
46c88433 | 1761 | |
54ecb5a2 AZ |
1762 | ofport = bond_choose_output_slave(out_xbundle->bond, |
1763 | &ctx->xin->flow, wc, vid); | |
84f0f298 | 1764 | xport = xport_lookup(xcfg, ofport); |
46c88433 EJ |
1765 | |
1766 | if (!xport) { | |
9583bc14 EJ |
1767 | /* No slaves enabled, so drop packet. */ |
1768 | return; | |
1769 | } | |
d6fc5f57 | 1770 | |
e93ef1c7 | 1771 | /* If use_recirc is set, the main thread will handle stats |
b256dc52 | 1772 | * accounting for this bond. */ |
e93ef1c7 | 1773 | if (!use_recirc) { |
b256dc52 JS |
1774 | if (ctx->xin->resubmit_stats) { |
1775 | bond_account(out_xbundle->bond, &ctx->xin->flow, vid, | |
1776 | ctx->xin->resubmit_stats->n_bytes); | |
1777 | } | |
1778 | if (ctx->xin->xcache) { | |
1779 | struct xc_entry *entry; | |
1780 | struct flow *flow; | |
1781 | ||
1782 | flow = &ctx->xin->flow; | |
1783 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_BOND); | |
1784 | entry->u.bond.bond = bond_ref(out_xbundle->bond); | |
1785 | entry->u.bond.flow = xmemdup(flow, sizeof *flow); | |
1786 | entry->u.bond.vid = vid; | |
1787 | } | |
d6fc5f57 | 1788 | } |
9583bc14 EJ |
1789 | } |
1790 | ||
33bf9176 | 1791 | old_tci = *flow_tci; |
9583bc14 | 1792 | tci = htons(vid); |
46c88433 | 1793 | if (tci || out_xbundle->use_priority_tags) { |
33bf9176 | 1794 | tci |= *flow_tci & htons(VLAN_PCP_MASK); |
9583bc14 EJ |
1795 | if (tci) { |
1796 | tci |= htons(VLAN_CFI); | |
1797 | } | |
1798 | } | |
33bf9176 | 1799 | *flow_tci = tci; |
9583bc14 | 1800 | |
e93ef1c7 | 1801 | compose_output_action(ctx, xport->ofp_port, use_recirc ? &xr : NULL); |
33bf9176 | 1802 | *flow_tci = old_tci; |
9583bc14 EJ |
1803 | } |
1804 | ||
1805 | /* A VM broadcasts a gratuitous ARP to indicate that it has resumed after | |
1806 | * migration. Older Citrix-patched Linux DomU used gratuitous ARP replies to | |
1807 | * indicate this; newer upstream kernels use gratuitous ARP requests. */ | |
1808 | static bool | |
1809 | is_gratuitous_arp(const struct flow *flow, struct flow_wildcards *wc) | |
1810 | { | |
1811 | if (flow->dl_type != htons(ETH_TYPE_ARP)) { | |
1812 | return false; | |
1813 | } | |
1814 | ||
1815 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); | |
1816 | if (!eth_addr_is_broadcast(flow->dl_dst)) { | |
1817 | return false; | |
1818 | } | |
1819 | ||
1820 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); | |
1821 | if (flow->nw_proto == ARP_OP_REPLY) { | |
1822 | return true; | |
1823 | } else if (flow->nw_proto == ARP_OP_REQUEST) { | |
1824 | memset(&wc->masks.nw_src, 0xff, sizeof wc->masks.nw_src); | |
1825 | memset(&wc->masks.nw_dst, 0xff, sizeof wc->masks.nw_dst); | |
1826 | ||
1827 | return flow->nw_src == flow->nw_dst; | |
1828 | } else { | |
1829 | return false; | |
1830 | } | |
1831 | } | |
1832 | ||
ff69c24a FL |
1833 | /* Determines whether packets in 'flow' within 'xbridge' should be forwarded or |
1834 | * dropped. Returns true if they may be forwarded, false if they should be | |
1835 | * dropped. | |
1836 | * | |
1837 | * 'in_port' must be the xport that corresponds to flow->in_port. | |
1838 | * 'in_port' must be part of a bundle (e.g. in_port->bundle must be nonnull). | |
1839 | * | |
1840 | * 'vlan' must be the VLAN that corresponds to flow->vlan_tci on 'in_port', as | |
1841 | * returned by input_vid_to_vlan(). It must be a valid VLAN for 'in_port', as | |
1842 | * checked by input_vid_is_valid(). | |
1843 | * | |
1844 | * May also add tags to '*tags', although the current implementation only does | |
1845 | * so in one special case. | |
1846 | */ | |
1847 | static bool | |
1848 | is_admissible(struct xlate_ctx *ctx, struct xport *in_port, | |
1849 | uint16_t vlan) | |
1850 | { | |
1851 | struct xbundle *in_xbundle = in_port->xbundle; | |
1852 | const struct xbridge *xbridge = ctx->xbridge; | |
1853 | struct flow *flow = &ctx->xin->flow; | |
1854 | ||
1855 | /* Drop frames for reserved multicast addresses | |
1856 | * only if forward_bpdu option is absent. */ | |
1857 | if (!xbridge->forward_bpdu && eth_addr_is_reserved(flow->dl_dst)) { | |
1858 | xlate_report(ctx, "packet has reserved destination MAC, dropping"); | |
1859 | return false; | |
1860 | } | |
1861 | ||
1862 | if (in_xbundle->bond) { | |
1863 | struct mac_entry *mac; | |
1864 | ||
1865 | switch (bond_check_admissibility(in_xbundle->bond, in_port->ofport, | |
1866 | flow->dl_dst)) { | |
1867 | case BV_ACCEPT: | |
1868 | break; | |
1869 | ||
1870 | case BV_DROP: | |
1871 | xlate_report(ctx, "bonding refused admissibility, dropping"); | |
1872 | return false; | |
1873 | ||
1874 | case BV_DROP_IF_MOVED: | |
1875 | ovs_rwlock_rdlock(&xbridge->ml->rwlock); | |
1876 | mac = mac_learning_lookup(xbridge->ml, flow->dl_src, vlan); | |
9d078ec2 BP |
1877 | if (mac |
1878 | && mac_entry_get_port(xbridge->ml, mac) != in_xbundle->ofbundle | |
49a73e0c | 1879 | && (!is_gratuitous_arp(flow, ctx->wc) |
9d078ec2 | 1880 | || mac_entry_is_grat_arp_locked(mac))) { |
ff69c24a FL |
1881 | ovs_rwlock_unlock(&xbridge->ml->rwlock); |
1882 | xlate_report(ctx, "SLB bond thinks this packet looped back, " | |
1883 | "dropping"); | |
1884 | return false; | |
1885 | } | |
1886 | ovs_rwlock_unlock(&xbridge->ml->rwlock); | |
1887 | break; | |
1888 | } | |
1889 | } | |
1890 | ||
1891 | return true; | |
1892 | } | |
1893 | ||
ee047520 BP |
1894 | /* Checks whether a MAC learning update is necessary for MAC learning table |
1895 | * 'ml' given that a packet matching 'flow' was received on 'in_xbundle' in | |
1896 | * 'vlan'. | |
1897 | * | |
1898 | * Most packets processed through the MAC learning table do not actually | |
1899 | * change it in any way. This function requires only a read lock on the MAC | |
1900 | * learning table, so it is much cheaper in this common case. | |
1901 | * | |
1902 | * Keep the code here synchronized with that in update_learning_table__() | |
1903 | * below. */ | |
1904 | static bool | |
1905 | is_mac_learning_update_needed(const struct mac_learning *ml, | |
1906 | const struct flow *flow, | |
1907 | struct flow_wildcards *wc, | |
1908 | int vlan, struct xbundle *in_xbundle) | |
d6fc5f57 | 1909 | OVS_REQ_RDLOCK(ml->rwlock) |
9583bc14 EJ |
1910 | { |
1911 | struct mac_entry *mac; | |
1912 | ||
ee047520 BP |
1913 | if (!mac_learning_may_learn(ml, flow->dl_src, vlan)) { |
1914 | return false; | |
1915 | } | |
1916 | ||
1917 | mac = mac_learning_lookup(ml, flow->dl_src, vlan); | |
1918 | if (!mac || mac_entry_age(ml, mac)) { | |
1919 | return true; | |
9583bc14 EJ |
1920 | } |
1921 | ||
ee047520 BP |
1922 | if (is_gratuitous_arp(flow, wc)) { |
1923 | /* We don't want to learn from gratuitous ARP packets that are | |
1924 | * reflected back over bond slaves so we lock the learning table. */ | |
1925 | if (!in_xbundle->bond) { | |
1926 | return true; | |
1927 | } else if (mac_entry_is_grat_arp_locked(mac)) { | |
1928 | return false; | |
1929 | } | |
1930 | } | |
1931 | ||
9d078ec2 | 1932 | return mac_entry_get_port(ml, mac) != in_xbundle->ofbundle; |
ee047520 BP |
1933 | } |
1934 | ||
1935 | ||
1936 | /* Updates MAC learning table 'ml' given that a packet matching 'flow' was | |
1937 | * received on 'in_xbundle' in 'vlan'. | |
1938 | * | |
1939 | * This code repeats all the checks in is_mac_learning_update_needed() because | |
1940 | * the lock was released between there and here and thus the MAC learning state | |
1941 | * could have changed. | |
1942 | * | |
1943 | * Keep the code here synchronized with that in is_mac_learning_update_needed() | |
1944 | * above. */ | |
1945 | static void | |
1946 | update_learning_table__(const struct xbridge *xbridge, | |
1947 | const struct flow *flow, struct flow_wildcards *wc, | |
1948 | int vlan, struct xbundle *in_xbundle) | |
d6fc5f57 | 1949 | OVS_REQ_WRLOCK(xbridge->ml->rwlock) |
ee047520 BP |
1950 | { |
1951 | struct mac_entry *mac; | |
1952 | ||
46c88433 | 1953 | if (!mac_learning_may_learn(xbridge->ml, flow->dl_src, vlan)) { |
ee047520 | 1954 | return; |
9583bc14 EJ |
1955 | } |
1956 | ||
46c88433 | 1957 | mac = mac_learning_insert(xbridge->ml, flow->dl_src, vlan); |
9583bc14 EJ |
1958 | if (is_gratuitous_arp(flow, wc)) { |
1959 | /* We don't want to learn from gratuitous ARP packets that are | |
1960 | * reflected back over bond slaves so we lock the learning table. */ | |
46c88433 | 1961 | if (!in_xbundle->bond) { |
9583bc14 EJ |
1962 | mac_entry_set_grat_arp_lock(mac); |
1963 | } else if (mac_entry_is_grat_arp_locked(mac)) { | |
ee047520 | 1964 | return; |
9583bc14 EJ |
1965 | } |
1966 | } | |
1967 | ||
9d078ec2 | 1968 | if (mac_entry_get_port(xbridge->ml, mac) != in_xbundle->ofbundle) { |
9583bc14 EJ |
1969 | /* The log messages here could actually be useful in debugging, |
1970 | * so keep the rate limit relatively high. */ | |
1971 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(30, 300); | |
ee047520 | 1972 | |
9583bc14 EJ |
1973 | VLOG_DBG_RL(&rl, "bridge %s: learned that "ETH_ADDR_FMT" is " |
1974 | "on port %s in VLAN %d", | |
46c88433 EJ |
1975 | xbridge->name, ETH_ADDR_ARGS(flow->dl_src), |
1976 | in_xbundle->name, vlan); | |
9583bc14 | 1977 | |
9d078ec2 | 1978 | mac_entry_set_port(xbridge->ml, mac, in_xbundle->ofbundle); |
9583bc14 | 1979 | } |
ee047520 BP |
1980 | } |
1981 | ||
1982 | static void | |
1983 | update_learning_table(const struct xbridge *xbridge, | |
1984 | const struct flow *flow, struct flow_wildcards *wc, | |
1985 | int vlan, struct xbundle *in_xbundle) | |
1986 | { | |
1987 | bool need_update; | |
1988 | ||
1989 | /* Don't learn the OFPP_NONE port. */ | |
1990 | if (in_xbundle == &ofpp_none_bundle) { | |
1991 | return; | |
1992 | } | |
1993 | ||
1994 | /* First try the common case: no change to MAC learning table. */ | |
1995 | ovs_rwlock_rdlock(&xbridge->ml->rwlock); | |
1996 | need_update = is_mac_learning_update_needed(xbridge->ml, flow, wc, vlan, | |
1997 | in_xbundle); | |
509c0149 | 1998 | ovs_rwlock_unlock(&xbridge->ml->rwlock); |
ee047520 BP |
1999 | |
2000 | if (need_update) { | |
2001 | /* Slow path: MAC learning table might need an update. */ | |
2002 | ovs_rwlock_wrlock(&xbridge->ml->rwlock); | |
2003 | update_learning_table__(xbridge, flow, wc, vlan, in_xbundle); | |
2004 | ovs_rwlock_unlock(&xbridge->ml->rwlock); | |
2005 | } | |
9583bc14 EJ |
2006 | } |
2007 | ||
86e2dcdd FL |
2008 | /* Updates multicast snooping table 'ms' given that a packet matching 'flow' |
2009 | * was received on 'in_xbundle' in 'vlan' and is either Report or Query. */ | |
2010 | static void | |
06994f87 TLSC |
2011 | update_mcast_snooping_table4__(const struct xbridge *xbridge, |
2012 | const struct flow *flow, | |
2013 | struct mcast_snooping *ms, int vlan, | |
2014 | struct xbundle *in_xbundle, | |
2015 | const struct dp_packet *packet) | |
86e2dcdd FL |
2016 | OVS_REQ_WRLOCK(ms->rwlock) |
2017 | { | |
2018 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(60, 30); | |
e3102e42 | 2019 | int count; |
06994f87 | 2020 | ovs_be32 ip4 = flow->igmp_group_ip4; |
86e2dcdd FL |
2021 | |
2022 | switch (ntohs(flow->tp_src)) { | |
2023 | case IGMP_HOST_MEMBERSHIP_REPORT: | |
2024 | case IGMPV2_HOST_MEMBERSHIP_REPORT: | |
964a4d5f | 2025 | if (mcast_snooping_add_group4(ms, ip4, vlan, in_xbundle->ofbundle)) { |
86e2dcdd FL |
2026 | VLOG_DBG_RL(&rl, "bridge %s: multicast snooping learned that " |
2027 | IP_FMT" is on port %s in VLAN %d", | |
2028 | xbridge->name, IP_ARGS(ip4), in_xbundle->name, vlan); | |
2029 | } | |
2030 | break; | |
2031 | case IGMP_HOST_LEAVE_MESSAGE: | |
964a4d5f | 2032 | if (mcast_snooping_leave_group4(ms, ip4, vlan, in_xbundle->ofbundle)) { |
86e2dcdd FL |
2033 | VLOG_DBG_RL(&rl, "bridge %s: multicast snooping leaving " |
2034 | IP_FMT" is on port %s in VLAN %d", | |
2035 | xbridge->name, IP_ARGS(ip4), in_xbundle->name, vlan); | |
2036 | } | |
2037 | break; | |
2038 | case IGMP_HOST_MEMBERSHIP_QUERY: | |
2039 | if (flow->nw_src && mcast_snooping_add_mrouter(ms, vlan, | |
2040 | in_xbundle->ofbundle)) { | |
2041 | VLOG_DBG_RL(&rl, "bridge %s: multicast snooping query from " | |
2042 | IP_FMT" is on port %s in VLAN %d", | |
2043 | xbridge->name, IP_ARGS(flow->nw_src), | |
2044 | in_xbundle->name, vlan); | |
2045 | } | |
2046 | break; | |
e3102e42 TLSC |
2047 | case IGMPV3_HOST_MEMBERSHIP_REPORT: |
2048 | if ((count = mcast_snooping_add_report(ms, packet, vlan, | |
2049 | in_xbundle->ofbundle))) { | |
2050 | VLOG_DBG_RL(&rl, "bridge %s: multicast snooping processed %d " | |
2051 | "addresses on port %s in VLAN %d", | |
2052 | xbridge->name, count, in_xbundle->name, vlan); | |
2053 | } | |
2054 | break; | |
86e2dcdd FL |
2055 | } |
2056 | } | |
2057 | ||
06994f87 TLSC |
2058 | static void |
2059 | update_mcast_snooping_table6__(const struct xbridge *xbridge, | |
2060 | const struct flow *flow, | |
2061 | struct mcast_snooping *ms, int vlan, | |
2062 | struct xbundle *in_xbundle, | |
2063 | const struct dp_packet *packet) | |
2064 | OVS_REQ_WRLOCK(ms->rwlock) | |
2065 | { | |
2066 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(60, 30); | |
2067 | int count; | |
2068 | ||
2069 | switch (ntohs(flow->tp_src)) { | |
2070 | case MLD_QUERY: | |
2071 | if (!ipv6_addr_equals(&flow->ipv6_src, &in6addr_any) | |
2072 | && mcast_snooping_add_mrouter(ms, vlan, in_xbundle->ofbundle)) { | |
2073 | VLOG_DBG_RL(&rl, "bridge %s: multicast snooping query on port %s" | |
2074 | "in VLAN %d", | |
2075 | xbridge->name, in_xbundle->name, vlan); | |
2076 | } | |
2077 | break; | |
2078 | case MLD_REPORT: | |
2079 | case MLD_DONE: | |
2080 | case MLD2_REPORT: | |
2081 | count = mcast_snooping_add_mld(ms, packet, vlan, in_xbundle->ofbundle); | |
2082 | if (count) { | |
2083 | VLOG_DBG_RL(&rl, "bridge %s: multicast snooping processed %d " | |
2084 | "addresses on port %s in VLAN %d", | |
2085 | xbridge->name, count, in_xbundle->name, vlan); | |
2086 | } | |
2087 | break; | |
2088 | } | |
2089 | } | |
2090 | ||
86e2dcdd FL |
2091 | /* Updates multicast snooping table 'ms' given that a packet matching 'flow' |
2092 | * was received on 'in_xbundle' in 'vlan'. */ | |
2093 | static void | |
2094 | update_mcast_snooping_table(const struct xbridge *xbridge, | |
2095 | const struct flow *flow, int vlan, | |
e3102e42 TLSC |
2096 | struct xbundle *in_xbundle, |
2097 | const struct dp_packet *packet) | |
86e2dcdd FL |
2098 | { |
2099 | struct mcast_snooping *ms = xbridge->ms; | |
2100 | struct xlate_cfg *xcfg; | |
2101 | struct xbundle *mcast_xbundle; | |
f4ae6e23 | 2102 | struct mcast_port_bundle *fport; |
86e2dcdd FL |
2103 | |
2104 | /* Don't learn the OFPP_NONE port. */ | |
2105 | if (in_xbundle == &ofpp_none_bundle) { | |
2106 | return; | |
2107 | } | |
2108 | ||
2109 | /* Don't learn from flood ports */ | |
2110 | mcast_xbundle = NULL; | |
2111 | ovs_rwlock_wrlock(&ms->rwlock); | |
2112 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
f4ae6e23 | 2113 | LIST_FOR_EACH(fport, node, &ms->fport_list) { |
86e2dcdd FL |
2114 | mcast_xbundle = xbundle_lookup(xcfg, fport->port); |
2115 | if (mcast_xbundle == in_xbundle) { | |
2116 | break; | |
2117 | } | |
2118 | } | |
2119 | ||
2120 | if (!mcast_xbundle || mcast_xbundle != in_xbundle) { | |
06994f87 TLSC |
2121 | if (flow->dl_type == htons(ETH_TYPE_IP)) { |
2122 | update_mcast_snooping_table4__(xbridge, flow, ms, vlan, | |
2123 | in_xbundle, packet); | |
2124 | } else { | |
2125 | update_mcast_snooping_table6__(xbridge, flow, ms, vlan, | |
2126 | in_xbundle, packet); | |
2127 | } | |
86e2dcdd FL |
2128 | } |
2129 | ovs_rwlock_unlock(&ms->rwlock); | |
2130 | } | |
2131 | ||
2132 | /* send the packet to ports having the multicast group learned */ | |
2133 | static void | |
2134 | xlate_normal_mcast_send_group(struct xlate_ctx *ctx, | |
2135 | struct mcast_snooping *ms OVS_UNUSED, | |
2136 | struct mcast_group *grp, | |
2137 | struct xbundle *in_xbundle, uint16_t vlan) | |
2138 | OVS_REQ_RDLOCK(ms->rwlock) | |
2139 | { | |
2140 | struct xlate_cfg *xcfg; | |
2141 | struct mcast_group_bundle *b; | |
2142 | struct xbundle *mcast_xbundle; | |
2143 | ||
2144 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
2145 | LIST_FOR_EACH(b, bundle_node, &grp->bundle_lru) { | |
2146 | mcast_xbundle = xbundle_lookup(xcfg, b->port); | |
2147 | if (mcast_xbundle && mcast_xbundle != in_xbundle) { | |
2148 | xlate_report(ctx, "forwarding to mcast group port"); | |
2149 | output_normal(ctx, mcast_xbundle, vlan); | |
2150 | } else if (!mcast_xbundle) { | |
2151 | xlate_report(ctx, "mcast group port is unknown, dropping"); | |
2152 | } else { | |
2153 | xlate_report(ctx, "mcast group port is input port, dropping"); | |
2154 | } | |
2155 | } | |
2156 | } | |
2157 | ||
2158 | /* send the packet to ports connected to multicast routers */ | |
2159 | static void | |
2160 | xlate_normal_mcast_send_mrouters(struct xlate_ctx *ctx, | |
2161 | struct mcast_snooping *ms, | |
2162 | struct xbundle *in_xbundle, uint16_t vlan) | |
2163 | OVS_REQ_RDLOCK(ms->rwlock) | |
2164 | { | |
2165 | struct xlate_cfg *xcfg; | |
2166 | struct mcast_mrouter_bundle *mrouter; | |
2167 | struct xbundle *mcast_xbundle; | |
2168 | ||
2169 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
2170 | LIST_FOR_EACH(mrouter, mrouter_node, &ms->mrouter_lru) { | |
2171 | mcast_xbundle = xbundle_lookup(xcfg, mrouter->port); | |
2172 | if (mcast_xbundle && mcast_xbundle != in_xbundle) { | |
2173 | xlate_report(ctx, "forwarding to mcast router port"); | |
2174 | output_normal(ctx, mcast_xbundle, vlan); | |
2175 | } else if (!mcast_xbundle) { | |
2176 | xlate_report(ctx, "mcast router port is unknown, dropping"); | |
2177 | } else { | |
2178 | xlate_report(ctx, "mcast router port is input port, dropping"); | |
2179 | } | |
2180 | } | |
2181 | } | |
2182 | ||
2183 | /* send the packet to ports flagged to be flooded */ | |
2184 | static void | |
2185 | xlate_normal_mcast_send_fports(struct xlate_ctx *ctx, | |
2186 | struct mcast_snooping *ms, | |
2187 | struct xbundle *in_xbundle, uint16_t vlan) | |
2188 | OVS_REQ_RDLOCK(ms->rwlock) | |
2189 | { | |
2190 | struct xlate_cfg *xcfg; | |
f4ae6e23 | 2191 | struct mcast_port_bundle *fport; |
86e2dcdd FL |
2192 | struct xbundle *mcast_xbundle; |
2193 | ||
2194 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
f4ae6e23 | 2195 | LIST_FOR_EACH(fport, node, &ms->fport_list) { |
86e2dcdd FL |
2196 | mcast_xbundle = xbundle_lookup(xcfg, fport->port); |
2197 | if (mcast_xbundle && mcast_xbundle != in_xbundle) { | |
2198 | xlate_report(ctx, "forwarding to mcast flood port"); | |
2199 | output_normal(ctx, mcast_xbundle, vlan); | |
2200 | } else if (!mcast_xbundle) { | |
2201 | xlate_report(ctx, "mcast flood port is unknown, dropping"); | |
2202 | } else { | |
2203 | xlate_report(ctx, "mcast flood port is input port, dropping"); | |
2204 | } | |
2205 | } | |
2206 | } | |
2207 | ||
8e04a33f FL |
2208 | /* forward the Reports to configured ports */ |
2209 | static void | |
2210 | xlate_normal_mcast_send_rports(struct xlate_ctx *ctx, | |
2211 | struct mcast_snooping *ms, | |
2212 | struct xbundle *in_xbundle, uint16_t vlan) | |
2213 | OVS_REQ_RDLOCK(ms->rwlock) | |
2214 | { | |
2215 | struct xlate_cfg *xcfg; | |
2216 | struct mcast_port_bundle *rport; | |
2217 | struct xbundle *mcast_xbundle; | |
2218 | ||
2219 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
2220 | LIST_FOR_EACH(rport, node, &ms->rport_list) { | |
2221 | mcast_xbundle = xbundle_lookup(xcfg, rport->port); | |
2222 | if (mcast_xbundle && mcast_xbundle != in_xbundle) { | |
2223 | xlate_report(ctx, "forwarding Report to mcast flagged port"); | |
2224 | output_normal(ctx, mcast_xbundle, vlan); | |
2225 | } else if (!mcast_xbundle) { | |
2226 | xlate_report(ctx, "mcast port is unknown, dropping the Report"); | |
2227 | } else { | |
2228 | xlate_report(ctx, "mcast port is input port, dropping the Report"); | |
2229 | } | |
2230 | } | |
2231 | } | |
2232 | ||
682800a4 FL |
2233 | static void |
2234 | xlate_normal_flood(struct xlate_ctx *ctx, struct xbundle *in_xbundle, | |
2235 | uint16_t vlan) | |
2236 | { | |
2237 | struct xbundle *xbundle; | |
2238 | ||
2239 | LIST_FOR_EACH (xbundle, list_node, &ctx->xbridge->xbundles) { | |
2240 | if (xbundle != in_xbundle | |
2241 | && xbundle_includes_vlan(xbundle, vlan) | |
2242 | && xbundle->floodable | |
2243 | && !xbundle_mirror_out(ctx->xbridge, xbundle)) { | |
2244 | output_normal(ctx, xbundle, vlan); | |
2245 | } | |
2246 | } | |
2247 | ctx->xout->nf_output_iface = NF_OUT_FLOOD; | |
2248 | } | |
2249 | ||
9583bc14 EJ |
2250 | static void |
2251 | xlate_normal(struct xlate_ctx *ctx) | |
2252 | { | |
49a73e0c | 2253 | struct flow_wildcards *wc = ctx->wc; |
33bf9176 | 2254 | struct flow *flow = &ctx->xin->flow; |
46c88433 EJ |
2255 | struct xbundle *in_xbundle; |
2256 | struct xport *in_port; | |
9583bc14 | 2257 | struct mac_entry *mac; |
d6d5bbc9 | 2258 | void *mac_port; |
9583bc14 EJ |
2259 | uint16_t vlan; |
2260 | uint16_t vid; | |
2261 | ||
2262 | ctx->xout->has_normal = true; | |
2263 | ||
33bf9176 BP |
2264 | memset(&wc->masks.dl_src, 0xff, sizeof wc->masks.dl_src); |
2265 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); | |
1dd35f8a | 2266 | wc->masks.vlan_tci |= htons(VLAN_VID_MASK | VLAN_CFI); |
9583bc14 | 2267 | |
46c88433 EJ |
2268 | in_xbundle = lookup_input_bundle(ctx->xbridge, flow->in_port.ofp_port, |
2269 | ctx->xin->packet != NULL, &in_port); | |
2270 | if (!in_xbundle) { | |
9583bc14 EJ |
2271 | xlate_report(ctx, "no input bundle, dropping"); |
2272 | return; | |
2273 | } | |
2274 | ||
2275 | /* Drop malformed frames. */ | |
33bf9176 BP |
2276 | if (flow->dl_type == htons(ETH_TYPE_VLAN) && |
2277 | !(flow->vlan_tci & htons(VLAN_CFI))) { | |
9583bc14 EJ |
2278 | if (ctx->xin->packet != NULL) { |
2279 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
2280 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet with partial " | |
2281 | "VLAN tag received on port %s", | |
46c88433 | 2282 | ctx->xbridge->name, in_xbundle->name); |
9583bc14 EJ |
2283 | } |
2284 | xlate_report(ctx, "partial VLAN tag, dropping"); | |
2285 | return; | |
2286 | } | |
2287 | ||
2288 | /* Drop frames on bundles reserved for mirroring. */ | |
46c88433 | 2289 | if (xbundle_mirror_out(ctx->xbridge, in_xbundle)) { |
9583bc14 EJ |
2290 | if (ctx->xin->packet != NULL) { |
2291 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
2292 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet received on port " | |
2293 | "%s, which is reserved exclusively for mirroring", | |
46c88433 | 2294 | ctx->xbridge->name, in_xbundle->name); |
9583bc14 EJ |
2295 | } |
2296 | xlate_report(ctx, "input port is mirror output port, dropping"); | |
2297 | return; | |
2298 | } | |
2299 | ||
2300 | /* Check VLAN. */ | |
33bf9176 | 2301 | vid = vlan_tci_to_vid(flow->vlan_tci); |
46c88433 | 2302 | if (!input_vid_is_valid(vid, in_xbundle, ctx->xin->packet != NULL)) { |
9583bc14 EJ |
2303 | xlate_report(ctx, "disallowed VLAN VID for this input port, dropping"); |
2304 | return; | |
2305 | } | |
46c88433 | 2306 | vlan = input_vid_to_vlan(in_xbundle, vid); |
9583bc14 EJ |
2307 | |
2308 | /* Check other admissibility requirements. */ | |
2309 | if (in_port && !is_admissible(ctx, in_port, vlan)) { | |
2310 | return; | |
2311 | } | |
2312 | ||
2313 | /* Learn source MAC. */ | |
2314 | if (ctx->xin->may_learn) { | |
46c88433 | 2315 | update_learning_table(ctx->xbridge, flow, wc, vlan, in_xbundle); |
9583bc14 | 2316 | } |
b256dc52 JS |
2317 | if (ctx->xin->xcache) { |
2318 | struct xc_entry *entry; | |
2319 | ||
2320 | /* Save enough info to update mac learning table later. */ | |
2321 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_NORMAL); | |
9edf6b48 | 2322 | entry->u.normal.ofproto = ctx->xbridge->ofproto; |
b256dc52 JS |
2323 | entry->u.normal.flow = xmemdup(flow, sizeof *flow); |
2324 | entry->u.normal.vlan = vlan; | |
2325 | } | |
9583bc14 EJ |
2326 | |
2327 | /* Determine output bundle. */ | |
86e2dcdd FL |
2328 | if (mcast_snooping_enabled(ctx->xbridge->ms) |
2329 | && !eth_addr_is_broadcast(flow->dl_dst) | |
2330 | && eth_addr_is_multicast(flow->dl_dst) | |
06994f87 | 2331 | && is_ip_any(flow)) { |
86e2dcdd | 2332 | struct mcast_snooping *ms = ctx->xbridge->ms; |
06994f87 | 2333 | struct mcast_group *grp = NULL; |
86e2dcdd | 2334 | |
06994f87 | 2335 | if (is_igmp(flow)) { |
d29f137b TLSC |
2336 | if (mcast_snooping_is_membership(flow->tp_src) || |
2337 | mcast_snooping_is_query(flow->tp_src)) { | |
2338 | if (ctx->xin->may_learn) { | |
86e2dcdd | 2339 | update_mcast_snooping_table(ctx->xbridge, flow, vlan, |
e3102e42 | 2340 | in_xbundle, ctx->xin->packet); |
d29f137b TLSC |
2341 | } |
2342 | /* | |
2343 | * IGMP packets need to take the slow path, in order to be | |
2344 | * processed for mdb updates. That will prevent expires | |
2345 | * firing off even after hosts have sent reports. | |
2346 | */ | |
2347 | ctx->xout->slow |= SLOW_ACTION; | |
86e2dcdd | 2348 | } |
d6d5bbc9 | 2349 | |
86e2dcdd FL |
2350 | if (mcast_snooping_is_membership(flow->tp_src)) { |
2351 | ovs_rwlock_rdlock(&ms->rwlock); | |
2352 | xlate_normal_mcast_send_mrouters(ctx, ms, in_xbundle, vlan); | |
8e04a33f FL |
2353 | /* RFC4541: section 2.1.1, item 1: A snooping switch should |
2354 | * forward IGMP Membership Reports only to those ports where | |
2355 | * multicast routers are attached. Alternatively stated: a | |
2356 | * snooping switch should not forward IGMP Membership Reports | |
2357 | * to ports on which only hosts are attached. | |
2358 | * An administrative control may be provided to override this | |
2359 | * restriction, allowing the report messages to be flooded to | |
2360 | * other ports. */ | |
2361 | xlate_normal_mcast_send_rports(ctx, ms, in_xbundle, vlan); | |
86e2dcdd FL |
2362 | ovs_rwlock_unlock(&ms->rwlock); |
2363 | } else { | |
2364 | xlate_report(ctx, "multicast traffic, flooding"); | |
2365 | xlate_normal_flood(ctx, in_xbundle, vlan); | |
2366 | } | |
2367 | return; | |
06994f87 TLSC |
2368 | } else if (is_mld(flow)) { |
2369 | ctx->xout->slow |= SLOW_ACTION; | |
2370 | if (ctx->xin->may_learn) { | |
2371 | update_mcast_snooping_table(ctx->xbridge, flow, vlan, | |
2372 | in_xbundle, ctx->xin->packet); | |
2373 | } | |
2374 | if (is_mld_report(flow)) { | |
2375 | ovs_rwlock_rdlock(&ms->rwlock); | |
2376 | xlate_normal_mcast_send_mrouters(ctx, ms, in_xbundle, vlan); | |
2377 | xlate_normal_mcast_send_rports(ctx, ms, in_xbundle, vlan); | |
2378 | ovs_rwlock_unlock(&ms->rwlock); | |
2379 | } else { | |
2380 | xlate_report(ctx, "MLD query, flooding"); | |
2381 | xlate_normal_flood(ctx, in_xbundle, vlan); | |
2382 | } | |
86e2dcdd | 2383 | } else { |
06994f87 TLSC |
2384 | if ((flow->dl_type == htons(ETH_TYPE_IP) |
2385 | && ip_is_local_multicast(flow->nw_dst)) | |
2386 | || (flow->dl_type == htons(ETH_TYPE_IPV6) | |
2387 | && ipv6_is_all_hosts(&flow->ipv6_dst))) { | |
86e2dcdd FL |
2388 | /* RFC4541: section 2.1.2, item 2: Packets with a dst IP |
2389 | * address in the 224.0.0.x range which are not IGMP must | |
2390 | * be forwarded on all ports */ | |
2391 | xlate_report(ctx, "RFC4541: section 2.1.2, item 2, flooding"); | |
2392 | xlate_normal_flood(ctx, in_xbundle, vlan); | |
2393 | return; | |
2394 | } | |
2395 | } | |
2396 | ||
2397 | /* forwarding to group base ports */ | |
2398 | ovs_rwlock_rdlock(&ms->rwlock); | |
06994f87 TLSC |
2399 | if (flow->dl_type == htons(ETH_TYPE_IP)) { |
2400 | grp = mcast_snooping_lookup4(ms, flow->nw_dst, vlan); | |
2401 | } else if (flow->dl_type == htons(ETH_TYPE_IPV6)) { | |
2402 | grp = mcast_snooping_lookup(ms, &flow->ipv6_dst, vlan); | |
2403 | } | |
86e2dcdd FL |
2404 | if (grp) { |
2405 | xlate_normal_mcast_send_group(ctx, ms, grp, in_xbundle, vlan); | |
2406 | xlate_normal_mcast_send_fports(ctx, ms, in_xbundle, vlan); | |
2407 | xlate_normal_mcast_send_mrouters(ctx, ms, in_xbundle, vlan); | |
9583bc14 | 2408 | } else { |
86e2dcdd FL |
2409 | if (mcast_snooping_flood_unreg(ms)) { |
2410 | xlate_report(ctx, "unregistered multicast, flooding"); | |
2411 | xlate_normal_flood(ctx, in_xbundle, vlan); | |
2412 | } else { | |
2413 | xlate_normal_mcast_send_mrouters(ctx, ms, in_xbundle, vlan); | |
2414 | xlate_normal_mcast_send_fports(ctx, ms, in_xbundle, vlan); | |
2415 | } | |
9583bc14 | 2416 | } |
86e2dcdd | 2417 | ovs_rwlock_unlock(&ms->rwlock); |
9583bc14 | 2418 | } else { |
86e2dcdd FL |
2419 | ovs_rwlock_rdlock(&ctx->xbridge->ml->rwlock); |
2420 | mac = mac_learning_lookup(ctx->xbridge->ml, flow->dl_dst, vlan); | |
9d078ec2 | 2421 | mac_port = mac ? mac_entry_get_port(ctx->xbridge->ml, mac) : NULL; |
86e2dcdd FL |
2422 | ovs_rwlock_unlock(&ctx->xbridge->ml->rwlock); |
2423 | ||
2424 | if (mac_port) { | |
2425 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
2426 | struct xbundle *mac_xbundle = xbundle_lookup(xcfg, mac_port); | |
2427 | if (mac_xbundle && mac_xbundle != in_xbundle) { | |
2428 | xlate_report(ctx, "forwarding to learned port"); | |
2429 | output_normal(ctx, mac_xbundle, vlan); | |
2430 | } else if (!mac_xbundle) { | |
2431 | xlate_report(ctx, "learned port is unknown, dropping"); | |
2432 | } else { | |
2433 | xlate_report(ctx, "learned port is input port, dropping"); | |
2434 | } | |
2435 | } else { | |
2436 | xlate_report(ctx, "no learned MAC for destination, flooding"); | |
2437 | xlate_normal_flood(ctx, in_xbundle, vlan); | |
2438 | } | |
9583bc14 EJ |
2439 | } |
2440 | } | |
2441 | ||
a6092018 BP |
2442 | /* Appends a "sample" action for sFlow or IPFIX to 'ctx->odp_actions'. The |
2443 | * 'probability' is the number of packets out of UINT32_MAX to sample. The | |
2444 | * 'cookie' (of length 'cookie_size' bytes) is passed back in the callback for | |
2445 | * each sampled packet. 'tunnel_out_port', if not ODPP_NONE, is added as the | |
2446 | * OVS_USERSPACE_ATTR_EGRESS_TUN_PORT attribute. If 'include_actions', an | |
2447 | * OVS_USERSPACE_ATTR_ACTIONS attribute is added. | |
9583bc14 EJ |
2448 | */ |
2449 | static size_t | |
a6092018 | 2450 | compose_sample_action(struct xlate_ctx *ctx, |
9583bc14 EJ |
2451 | const uint32_t probability, |
2452 | const union user_action_cookie *cookie, | |
8b7ea2d4 | 2453 | const size_t cookie_size, |
7321bda3 NM |
2454 | const odp_port_t tunnel_out_port, |
2455 | bool include_actions) | |
9583bc14 | 2456 | { |
a6092018 BP |
2457 | size_t sample_offset = nl_msg_start_nested(ctx->odp_actions, |
2458 | OVS_ACTION_ATTR_SAMPLE); | |
9583bc14 | 2459 | |
a6092018 | 2460 | nl_msg_put_u32(ctx->odp_actions, OVS_SAMPLE_ATTR_PROBABILITY, probability); |
9583bc14 | 2461 | |
a6092018 BP |
2462 | size_t actions_offset = nl_msg_start_nested(ctx->odp_actions, |
2463 | OVS_SAMPLE_ATTR_ACTIONS); | |
9583bc14 | 2464 | |
a6092018 BP |
2465 | odp_port_t odp_port = ofp_port_to_odp_port( |
2466 | ctx->xbridge, ctx->xin->flow.in_port.ofp_port); | |
2467 | uint32_t pid = dpif_port_get_pid(ctx->xbridge->dpif, odp_port, | |
2468 | flow_hash_5tuple(&ctx->xin->flow, 0)); | |
2469 | int cookie_offset = odp_put_userspace_action(pid, cookie, cookie_size, | |
2470 | tunnel_out_port, | |
2471 | include_actions, | |
2472 | ctx->odp_actions); | |
89a8a7f0 | 2473 | |
a6092018 BP |
2474 | nl_msg_end_nested(ctx->odp_actions, actions_offset); |
2475 | nl_msg_end_nested(ctx->odp_actions, sample_offset); | |
9583bc14 | 2476 | |
9583bc14 EJ |
2477 | return cookie_offset; |
2478 | } | |
2479 | ||
a6092018 BP |
2480 | /* If sFLow is not enabled, returns 0 without doing anything. |
2481 | * | |
2482 | * If sFlow is enabled, appends a template "sample" action to the ODP actions | |
2483 | * in 'ctx'. This action is a template because some of the information needed | |
2484 | * to fill it out is not available until flow translation is complete. In this | |
2485 | * case, this functions returns an offset, which is always nonzero, to pass | |
2486 | * later to fix_sflow_action() to fill in the rest of the template. */ | |
9583bc14 | 2487 | static size_t |
a6092018 | 2488 | compose_sflow_action(struct xlate_ctx *ctx) |
9583bc14 | 2489 | { |
a6092018 BP |
2490 | struct dpif_sflow *sflow = ctx->xbridge->sflow; |
2491 | if (!sflow || ctx->xin->flow.in_port.ofp_port == OFPP_NONE) { | |
9583bc14 EJ |
2492 | return 0; |
2493 | } | |
2494 | ||
a6092018 BP |
2495 | union user_action_cookie cookie = { .type = USER_ACTION_COOKIE_SFLOW }; |
2496 | return compose_sample_action(ctx, dpif_sflow_get_probability(sflow), | |
7321bda3 NM |
2497 | &cookie, sizeof cookie.sflow, ODPP_NONE, |
2498 | true); | |
9583bc14 EJ |
2499 | } |
2500 | ||
a6092018 BP |
2501 | /* If IPFIX is enabled, this appends a "sample" action to implement IPFIX to |
2502 | * 'ctx->odp_actions'. */ | |
9583bc14 | 2503 | static void |
a6092018 | 2504 | compose_ipfix_action(struct xlate_ctx *ctx, odp_port_t output_odp_port) |
9583bc14 | 2505 | { |
a6092018 | 2506 | struct dpif_ipfix *ipfix = ctx->xbridge->ipfix; |
8b7ea2d4 | 2507 | odp_port_t tunnel_out_port = ODPP_NONE; |
9583bc14 | 2508 | |
a6092018 | 2509 | if (!ipfix || ctx->xin->flow.in_port.ofp_port == OFPP_NONE) { |
9583bc14 EJ |
2510 | return; |
2511 | } | |
2512 | ||
8b7ea2d4 WZ |
2513 | /* For input case, output_odp_port is ODPP_NONE, which is an invalid port |
2514 | * number. */ | |
2515 | if (output_odp_port == ODPP_NONE && | |
a6092018 | 2516 | !dpif_ipfix_get_bridge_exporter_input_sampling(ipfix)) { |
8b7ea2d4 WZ |
2517 | return; |
2518 | } | |
2519 | ||
2520 | /* For output case, output_odp_port is valid*/ | |
2521 | if (output_odp_port != ODPP_NONE) { | |
a6092018 | 2522 | if (!dpif_ipfix_get_bridge_exporter_output_sampling(ipfix)) { |
8b7ea2d4 WZ |
2523 | return; |
2524 | } | |
2525 | /* If tunnel sampling is enabled, put an additional option attribute: | |
2526 | * OVS_USERSPACE_ATTR_TUNNEL_OUT_PORT | |
2527 | */ | |
a6092018 BP |
2528 | if (dpif_ipfix_get_bridge_exporter_tunnel_sampling(ipfix) && |
2529 | dpif_ipfix_get_tunnel_port(ipfix, output_odp_port) ) { | |
8b7ea2d4 WZ |
2530 | tunnel_out_port = output_odp_port; |
2531 | } | |
2532 | } | |
2533 | ||
a6092018 BP |
2534 | union user_action_cookie cookie = { |
2535 | .ipfix = { | |
2536 | .type = USER_ACTION_COOKIE_IPFIX, | |
2537 | .output_odp_port = output_odp_port, | |
2538 | } | |
2539 | }; | |
2540 | compose_sample_action(ctx, | |
2541 | dpif_ipfix_get_bridge_exporter_probability(ipfix), | |
7321bda3 NM |
2542 | &cookie, sizeof cookie.ipfix, tunnel_out_port, |
2543 | false); | |
9583bc14 EJ |
2544 | } |
2545 | ||
a6092018 BP |
2546 | /* Fix "sample" action according to data collected while composing ODP actions, |
2547 | * as described in compose_sflow_action(). | |
2548 | * | |
2549 | * 'user_cookie_offset' must be the offset returned by add_sflow_action(). */ | |
9583bc14 | 2550 | static void |
a6092018 | 2551 | fix_sflow_action(struct xlate_ctx *ctx, unsigned int user_cookie_offset) |
9583bc14 EJ |
2552 | { |
2553 | const struct flow *base = &ctx->base_flow; | |
2554 | union user_action_cookie *cookie; | |
2555 | ||
a6092018 | 2556 | cookie = ofpbuf_at(ctx->odp_actions, user_cookie_offset, |
9583bc14 EJ |
2557 | sizeof cookie->sflow); |
2558 | ovs_assert(cookie->type == USER_ACTION_COOKIE_SFLOW); | |
2559 | ||
a6092018 BP |
2560 | cookie->type = USER_ACTION_COOKIE_SFLOW; |
2561 | cookie->sflow.vlan_tci = base->vlan_tci; | |
2562 | ||
2563 | /* See http://www.sflow.org/sflow_version_5.txt (search for "Input/output | |
2564 | * port information") for the interpretation of cookie->output. */ | |
2565 | switch (ctx->sflow_n_outputs) { | |
2566 | case 0: | |
2567 | /* 0x40000000 | 256 means "packet dropped for unknown reason". */ | |
2568 | cookie->sflow.output = 0x40000000 | 256; | |
2569 | break; | |
2570 | ||
2571 | case 1: | |
2572 | cookie->sflow.output = dpif_sflow_odp_port_to_ifindex( | |
2573 | ctx->xbridge->sflow, ctx->sflow_odp_port); | |
2574 | if (cookie->sflow.output) { | |
2575 | break; | |
2576 | } | |
2577 | /* Fall through. */ | |
2578 | default: | |
2579 | /* 0x80000000 means "multiple output ports. */ | |
2580 | cookie->sflow.output = 0x80000000 | ctx->sflow_n_outputs; | |
2581 | break; | |
2582 | } | |
9583bc14 EJ |
2583 | } |
2584 | ||
515793d5 BP |
2585 | static bool |
2586 | process_special(struct xlate_ctx *ctx, const struct xport *xport) | |
db7d4e46 | 2587 | { |
515793d5 | 2588 | const struct flow *flow = &ctx->xin->flow; |
49a73e0c | 2589 | struct flow_wildcards *wc = ctx->wc; |
46c88433 | 2590 | const struct xbridge *xbridge = ctx->xbridge; |
515793d5 BP |
2591 | const struct dp_packet *packet = ctx->xin->packet; |
2592 | enum slow_path_reason slow; | |
642dc74d | 2593 | |
46c88433 | 2594 | if (!xport) { |
515793d5 | 2595 | slow = 0; |
46c88433 | 2596 | } else if (xport->cfm && cfm_should_process_flow(xport->cfm, flow, wc)) { |
db7d4e46 | 2597 | if (packet) { |
46c88433 | 2598 | cfm_process_heartbeat(xport->cfm, packet); |
db7d4e46 | 2599 | } |
515793d5 | 2600 | slow = SLOW_CFM; |
fab52e16 | 2601 | } else if (xport->bfd && bfd_should_process_flow(xport->bfd, flow, wc)) { |
db7d4e46 | 2602 | if (packet) { |
46c88433 | 2603 | bfd_process_packet(xport->bfd, flow, packet); |
60d02c72 AW |
2604 | /* If POLL received, immediately sends FINAL back. */ |
2605 | if (bfd_should_send_packet(xport->bfd)) { | |
6d308b28 | 2606 | ofproto_dpif_monitor_port_send_soon(xport->ofport); |
60d02c72 | 2607 | } |
db7d4e46 | 2608 | } |
515793d5 | 2609 | slow = SLOW_BFD; |
46c88433 | 2610 | } else if (xport->xbundle && xport->xbundle->lacp |
db7d4e46 JP |
2611 | && flow->dl_type == htons(ETH_TYPE_LACP)) { |
2612 | if (packet) { | |
46c88433 | 2613 | lacp_process_packet(xport->xbundle->lacp, xport->ofport, packet); |
db7d4e46 | 2614 | } |
515793d5 | 2615 | slow = SLOW_LACP; |
9efd308e DV |
2616 | } else if ((xbridge->stp || xbridge->rstp) && |
2617 | stp_should_process_flow(flow, wc)) { | |
db7d4e46 | 2618 | if (packet) { |
f025bcb7 JR |
2619 | xbridge->stp |
2620 | ? stp_process_packet(xport, packet) | |
2621 | : rstp_process_packet(xport, packet); | |
db7d4e46 | 2622 | } |
515793d5 | 2623 | slow = SLOW_STP; |
19aef6ef | 2624 | } else if (xport->lldp && lldp_should_process_flow(xport->lldp, flow)) { |
0477baa9 DF |
2625 | if (packet) { |
2626 | lldp_process_packet(xport->lldp, packet); | |
2627 | } | |
515793d5 | 2628 | slow = SLOW_LLDP; |
db7d4e46 | 2629 | } else { |
515793d5 BP |
2630 | slow = 0; |
2631 | } | |
2632 | ||
2633 | if (slow) { | |
2634 | ctx->xout->slow |= slow; | |
2635 | return true; | |
2636 | } else { | |
2637 | return false; | |
db7d4e46 JP |
2638 | } |
2639 | } | |
2640 | ||
a36de779 PS |
2641 | static int |
2642 | tnl_route_lookup_flow(const struct flow *oflow, | |
2643 | ovs_be32 *ip, struct xport **out_port) | |
2644 | { | |
2645 | char out_dev[IFNAMSIZ]; | |
2646 | struct xbridge *xbridge; | |
2647 | struct xlate_cfg *xcfg; | |
2648 | ovs_be32 gw; | |
2649 | ||
2650 | if (!ovs_router_lookup(oflow->tunnel.ip_dst, out_dev, &gw)) { | |
2651 | return -ENOENT; | |
2652 | } | |
2653 | ||
2654 | if (gw) { | |
2655 | *ip = gw; | |
2656 | } else { | |
2657 | *ip = oflow->tunnel.ip_dst; | |
2658 | } | |
2659 | ||
2660 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
2661 | ovs_assert(xcfg); | |
2662 | ||
2663 | HMAP_FOR_EACH (xbridge, hmap_node, &xcfg->xbridges) { | |
2664 | if (!strncmp(xbridge->name, out_dev, IFNAMSIZ)) { | |
2665 | struct xport *port; | |
2666 | ||
2667 | HMAP_FOR_EACH (port, ofp_node, &xbridge->xports) { | |
2668 | if (!strncmp(netdev_get_name(port->netdev), out_dev, IFNAMSIZ)) { | |
2669 | *out_port = port; | |
2670 | return 0; | |
2671 | } | |
2672 | } | |
2673 | } | |
2674 | } | |
2675 | return -ENOENT; | |
2676 | } | |
2677 | ||
2678 | static int | |
cf62fa4c | 2679 | xlate_flood_packet(struct xbridge *xbridge, struct dp_packet *packet) |
a36de779 PS |
2680 | { |
2681 | struct ofpact_output output; | |
2682 | struct flow flow; | |
2683 | ||
2684 | ofpact_init(&output.ofpact, OFPACT_OUTPUT, sizeof output); | |
2685 | /* Use OFPP_NONE as the in_port to avoid special packet processing. */ | |
cf62fa4c | 2686 | flow_extract(packet, &flow); |
a36de779 PS |
2687 | flow.in_port.ofp_port = OFPP_NONE; |
2688 | output.port = OFPP_FLOOD; | |
2689 | output.max_len = 0; | |
2690 | ||
2691 | return ofproto_dpif_execute_actions(xbridge->ofproto, &flow, NULL, | |
2692 | &output.ofpact, sizeof output, | |
2693 | packet); | |
2694 | } | |
2695 | ||
2696 | static void | |
2697 | tnl_send_arp_request(const struct xport *out_dev, const uint8_t eth_src[ETH_ADDR_LEN], | |
2698 | ovs_be32 ip_src, ovs_be32 ip_dst) | |
2699 | { | |
2700 | struct xbridge *xbridge = out_dev->xbridge; | |
cf62fa4c | 2701 | struct dp_packet packet; |
a36de779 | 2702 | |
cf62fa4c | 2703 | dp_packet_init(&packet, 0); |
eb0b295e BP |
2704 | compose_arp(&packet, ARP_OP_REQUEST, |
2705 | eth_src, eth_addr_zero, true, ip_src, ip_dst); | |
a36de779 PS |
2706 | |
2707 | xlate_flood_packet(xbridge, &packet); | |
cf62fa4c | 2708 | dp_packet_uninit(&packet); |
a36de779 PS |
2709 | } |
2710 | ||
2711 | static int | |
81de18ec | 2712 | build_tunnel_send(struct xlate_ctx *ctx, const struct xport *xport, |
a36de779 PS |
2713 | const struct flow *flow, odp_port_t tunnel_odp_port) |
2714 | { | |
2715 | struct ovs_action_push_tnl tnl_push_data; | |
2716 | struct xport *out_dev = NULL; | |
2717 | ovs_be32 s_ip, d_ip = 0; | |
2718 | uint8_t smac[ETH_ADDR_LEN]; | |
2719 | uint8_t dmac[ETH_ADDR_LEN]; | |
2720 | int err; | |
2721 | ||
2722 | err = tnl_route_lookup_flow(flow, &d_ip, &out_dev); | |
2723 | if (err) { | |
81de18ec | 2724 | xlate_report(ctx, "native tunnel routing failed"); |
a36de779 PS |
2725 | return err; |
2726 | } | |
81de18ec BP |
2727 | xlate_report(ctx, "tunneling to "IP_FMT" via %s", |
2728 | IP_ARGS(d_ip), netdev_get_name(out_dev->netdev)); | |
a36de779 PS |
2729 | |
2730 | /* Use mac addr of bridge port of the peer. */ | |
2731 | err = netdev_get_etheraddr(out_dev->netdev, smac); | |
2732 | if (err) { | |
81de18ec | 2733 | xlate_report(ctx, "tunnel output device lacks Ethernet address"); |
a36de779 PS |
2734 | return err; |
2735 | } | |
2736 | ||
2737 | err = netdev_get_in4(out_dev->netdev, (struct in_addr *) &s_ip, NULL); | |
2738 | if (err) { | |
81de18ec | 2739 | xlate_report(ctx, "tunnel output device lacks IPv4 address"); |
a36de779 PS |
2740 | return err; |
2741 | } | |
2742 | ||
2743 | err = tnl_arp_lookup(out_dev->xbridge->name, d_ip, dmac); | |
2744 | if (err) { | |
81de18ec BP |
2745 | xlate_report(ctx, "ARP cache miss for "IP_FMT" on bridge %s, " |
2746 | "sending ARP request", | |
2747 | IP_ARGS(d_ip), out_dev->xbridge->name); | |
a36de779 PS |
2748 | tnl_send_arp_request(out_dev, smac, s_ip, d_ip); |
2749 | return err; | |
2750 | } | |
2751 | if (ctx->xin->xcache) { | |
2752 | struct xc_entry *entry; | |
2753 | ||
2754 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_TNL_ARP); | |
8742957c BP |
2755 | ovs_strlcpy(entry->u.tnl_arp_cache.br_name, out_dev->xbridge->name, |
2756 | sizeof entry->u.tnl_arp_cache.br_name); | |
a36de779 PS |
2757 | entry->u.tnl_arp_cache.d_ip = d_ip; |
2758 | } | |
81de18ec BP |
2759 | |
2760 | xlate_report(ctx, "tunneling from "ETH_ADDR_FMT" "IP_FMT | |
2761 | " to "ETH_ADDR_FMT" "IP_FMT, | |
2762 | ETH_ADDR_ARGS(smac), IP_ARGS(s_ip), | |
2763 | ETH_ADDR_ARGS(dmac), IP_ARGS(d_ip)); | |
a36de779 PS |
2764 | err = tnl_port_build_header(xport->ofport, flow, |
2765 | dmac, smac, s_ip, &tnl_push_data); | |
2766 | if (err) { | |
2767 | return err; | |
2768 | } | |
2769 | tnl_push_data.tnl_port = odp_to_u32(tunnel_odp_port); | |
2770 | tnl_push_data.out_port = odp_to_u32(out_dev->odp_port); | |
1520ef4f | 2771 | odp_put_tnl_push_action(ctx->odp_actions, &tnl_push_data); |
a36de779 PS |
2772 | return 0; |
2773 | } | |
2774 | ||
9583bc14 | 2775 | static void |
4e022ec0 | 2776 | compose_output_action__(struct xlate_ctx *ctx, ofp_port_t ofp_port, |
e93ef1c7 | 2777 | const struct xlate_bond_recirc *xr, bool check_stp) |
9583bc14 | 2778 | { |
46c88433 | 2779 | const struct xport *xport = get_ofp_port(ctx->xbridge, ofp_port); |
49a73e0c | 2780 | struct flow_wildcards *wc = ctx->wc; |
33bf9176 | 2781 | struct flow *flow = &ctx->xin->flow; |
a36de779 | 2782 | struct flow_tnl flow_tnl; |
9583bc14 | 2783 | ovs_be16 flow_vlan_tci; |
1362e248 | 2784 | uint32_t flow_pkt_mark; |
9583bc14 | 2785 | uint8_t flow_nw_tos; |
4e022ec0 | 2786 | odp_port_t out_port, odp_port; |
a36de779 | 2787 | bool tnl_push_pop_send = false; |
ca077186 | 2788 | uint8_t dscp; |
9583bc14 EJ |
2789 | |
2790 | /* If 'struct flow' gets additional metadata, we'll need to zero it out | |
2791 | * before traversing a patch port. */ | |
b666962b | 2792 | BUILD_ASSERT_DECL(FLOW_WC_SEQ == 33); |
a36de779 | 2793 | memset(&flow_tnl, 0, sizeof flow_tnl); |
9583bc14 | 2794 | |
46c88433 | 2795 | if (!xport) { |
9583bc14 EJ |
2796 | xlate_report(ctx, "Nonexistent output port"); |
2797 | return; | |
46c88433 | 2798 | } else if (xport->config & OFPUTIL_PC_NO_FWD) { |
9583bc14 EJ |
2799 | xlate_report(ctx, "OFPPC_NO_FWD set, skipping output"); |
2800 | return; | |
0d1cee12 | 2801 | } else if (check_stp) { |
bbbca389 | 2802 | if (is_stp(&ctx->base_flow)) { |
9efd308e DV |
2803 | if (!xport_stp_should_forward_bpdu(xport) && |
2804 | !xport_rstp_should_manage_bpdu(xport)) { | |
2805 | if (ctx->xbridge->stp != NULL) { | |
2806 | xlate_report(ctx, "STP not in listening state, " | |
2807 | "skipping bpdu output"); | |
2808 | } else if (ctx->xbridge->rstp != NULL) { | |
2809 | xlate_report(ctx, "RSTP not managing BPDU in this state, " | |
2810 | "skipping bpdu output"); | |
2811 | } | |
0d1cee12 K |
2812 | return; |
2813 | } | |
9efd308e DV |
2814 | } else if (!xport_stp_forward_state(xport) || |
2815 | !xport_rstp_forward_state(xport)) { | |
2816 | if (ctx->xbridge->stp != NULL) { | |
2817 | xlate_report(ctx, "STP not in forwarding state, " | |
2818 | "skipping output"); | |
2819 | } else if (ctx->xbridge->rstp != NULL) { | |
2820 | xlate_report(ctx, "RSTP not in forwarding state, " | |
2821 | "skipping output"); | |
2822 | } | |
0d1cee12 K |
2823 | return; |
2824 | } | |
9583bc14 EJ |
2825 | } |
2826 | ||
46c88433 EJ |
2827 | if (mbridge_has_mirrors(ctx->xbridge->mbridge) && xport->xbundle) { |
2828 | ctx->xout->mirrors |= xbundle_mirror_dst(xport->xbundle->xbridge, | |
2829 | xport->xbundle); | |
cdf5d3a5 EJ |
2830 | } |
2831 | ||
46c88433 EJ |
2832 | if (xport->peer) { |
2833 | const struct xport *peer = xport->peer; | |
9583bc14 | 2834 | struct flow old_flow = ctx->xin->flow; |
7f5fe537 | 2835 | bool old_was_mpls = ctx->was_mpls; |
18721c4a | 2836 | cls_version_t old_version = ctx->tables_version; |
1774d762 JR |
2837 | struct ofpbuf old_stack = ctx->stack; |
2838 | union mf_subvalue new_stack[1024 / sizeof(union mf_subvalue)]; | |
ed9c9e3e JR |
2839 | struct ofpbuf old_action_set = ctx->action_set; |
2840 | uint64_t actset_stub[1024 / 8]; | |
9583bc14 | 2841 | |
1774d762 | 2842 | ofpbuf_use_stub(&ctx->stack, new_stack, sizeof new_stack); |
ed9c9e3e | 2843 | ofpbuf_use_stub(&ctx->action_set, actset_stub, sizeof actset_stub); |
46c88433 EJ |
2844 | ctx->xbridge = peer->xbridge; |
2845 | flow->in_port.ofp_port = peer->ofp_port; | |
33bf9176 BP |
2846 | flow->metadata = htonll(0); |
2847 | memset(&flow->tunnel, 0, sizeof flow->tunnel); | |
2848 | memset(flow->regs, 0, sizeof flow->regs); | |
c61f3870 | 2849 | flow->actset_output = OFPP_UNSET; |
9583bc14 | 2850 | |
621b8064 JR |
2851 | /* The bridge is now known so obtain its table version. */ |
2852 | ctx->tables_version | |
2853 | = ofproto_dpif_get_tables_version(ctx->xbridge->ofproto); | |
2854 | ||
515793d5 | 2855 | if (!process_special(ctx, peer) && may_receive(peer, ctx)) { |
9efd308e | 2856 | if (xport_stp_forward_state(peer) && xport_rstp_forward_state(peer)) { |
e672ff9b | 2857 | xlate_table_action(ctx, flow->in_port.ofp_port, 0, true, true); |
ed9c9e3e | 2858 | if (ctx->action_set.size) { |
e672ff9b JR |
2859 | /* Translate action set only if not dropping the packet and |
2860 | * not recirculating. */ | |
2861 | if (!exit_recirculates(ctx)) { | |
2862 | xlate_action_set(ctx); | |
2863 | } | |
2864 | } | |
2865 | /* Check if need to recirculate. */ | |
2866 | if (exit_recirculates(ctx)) { | |
2867 | compose_recirculate_action(ctx); | |
ed9c9e3e | 2868 | } |
9583bc14 | 2869 | } else { |
9efd308e DV |
2870 | /* Forwarding is disabled by STP and RSTP. Let OFPP_NORMAL and |
2871 | * the learning action look at the packet, then drop it. */ | |
9583bc14 | 2872 | struct flow old_base_flow = ctx->base_flow; |
1520ef4f | 2873 | size_t old_size = ctx->odp_actions->size; |
cdf5d3a5 | 2874 | mirror_mask_t old_mirrors = ctx->xout->mirrors; |
f3d5b473 | 2875 | |
e672ff9b | 2876 | xlate_table_action(ctx, flow->in_port.ofp_port, 0, true, true); |
cdf5d3a5 | 2877 | ctx->xout->mirrors = old_mirrors; |
9583bc14 | 2878 | ctx->base_flow = old_base_flow; |
1520ef4f | 2879 | ctx->odp_actions->size = old_size; |
e672ff9b JR |
2880 | |
2881 | /* Undo changes that may have been done for recirculation. */ | |
2882 | if (exit_recirculates(ctx)) { | |
2883 | ctx->action_set.size = ctx->recirc_action_offset; | |
2884 | ctx->recirc_action_offset = -1; | |
2885 | ctx->last_unroll_offset = -1; | |
2886 | } | |
9583bc14 EJ |
2887 | } |
2888 | } | |
2889 | ||
2890 | ctx->xin->flow = old_flow; | |
832554e3 | 2891 | ctx->xbridge = xport->xbridge; |
ed9c9e3e JR |
2892 | ofpbuf_uninit(&ctx->action_set); |
2893 | ctx->action_set = old_action_set; | |
1774d762 JR |
2894 | ofpbuf_uninit(&ctx->stack); |
2895 | ctx->stack = old_stack; | |
9583bc14 | 2896 | |
621b8064 JR |
2897 | /* Restore calling bridge's lookup version. */ |
2898 | ctx->tables_version = old_version; | |
2899 | ||
7f5fe537 JR |
2900 | /* The peer bridge popping MPLS should have no effect on the original |
2901 | * bridge. */ | |
2902 | ctx->was_mpls = old_was_mpls; | |
2903 | ||
f3d5b473 JR |
2904 | /* The fact that the peer bridge exits (for any reason) does not mean |
2905 | * that the original bridge should exit. Specifically, if the peer | |
2906 | * bridge recirculates (which typically modifies the packet), the | |
2907 | * original bridge must continue processing with the original, not the | |
2908 | * recirculated packet! */ | |
2909 | ctx->exit = false; | |
2910 | ||
9583bc14 | 2911 | if (ctx->xin->resubmit_stats) { |
46c88433 EJ |
2912 | netdev_vport_inc_tx(xport->netdev, ctx->xin->resubmit_stats); |
2913 | netdev_vport_inc_rx(peer->netdev, ctx->xin->resubmit_stats); | |
a1aeea86 AW |
2914 | if (peer->bfd) { |
2915 | bfd_account_rx(peer->bfd, ctx->xin->resubmit_stats); | |
2916 | } | |
9583bc14 | 2917 | } |
b256dc52 JS |
2918 | if (ctx->xin->xcache) { |
2919 | struct xc_entry *entry; | |
2920 | ||
2921 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_NETDEV); | |
2922 | entry->u.dev.tx = netdev_ref(xport->netdev); | |
2923 | entry->u.dev.rx = netdev_ref(peer->netdev); | |
2924 | entry->u.dev.bfd = bfd_ref(peer->bfd); | |
2925 | } | |
9583bc14 EJ |
2926 | return; |
2927 | } | |
2928 | ||
33bf9176 | 2929 | flow_vlan_tci = flow->vlan_tci; |
1362e248 | 2930 | flow_pkt_mark = flow->pkt_mark; |
33bf9176 | 2931 | flow_nw_tos = flow->nw_tos; |
9583bc14 | 2932 | |
16194afd DDP |
2933 | if (count_skb_priorities(xport)) { |
2934 | memset(&wc->masks.skb_priority, 0xff, sizeof wc->masks.skb_priority); | |
2935 | if (dscp_from_skb_priority(xport, flow->skb_priority, &dscp)) { | |
2936 | wc->masks.nw_tos |= IP_DSCP_MASK; | |
2937 | flow->nw_tos &= ~IP_DSCP_MASK; | |
2938 | flow->nw_tos |= dscp; | |
2939 | } | |
9583bc14 EJ |
2940 | } |
2941 | ||
46c88433 | 2942 | if (xport->is_tunnel) { |
9583bc14 EJ |
2943 | /* Save tunnel metadata so that changes made due to |
2944 | * the Logical (tunnel) Port are not visible for any further | |
2945 | * matches, while explicit set actions on tunnel metadata are. | |
2946 | */ | |
a36de779 | 2947 | flow_tnl = flow->tunnel; |
49a73e0c | 2948 | odp_port = tnl_port_send(xport->ofport, flow, ctx->wc); |
4e022ec0 | 2949 | if (odp_port == ODPP_NONE) { |
9583bc14 EJ |
2950 | xlate_report(ctx, "Tunneling decided against output"); |
2951 | goto out; /* restore flow_nw_tos */ | |
2952 | } | |
33bf9176 | 2953 | if (flow->tunnel.ip_dst == ctx->orig_tunnel_ip_dst) { |
9583bc14 EJ |
2954 | xlate_report(ctx, "Not tunneling to our own address"); |
2955 | goto out; /* restore flow_nw_tos */ | |
2956 | } | |
2957 | if (ctx->xin->resubmit_stats) { | |
46c88433 | 2958 | netdev_vport_inc_tx(xport->netdev, ctx->xin->resubmit_stats); |
9583bc14 | 2959 | } |
b256dc52 JS |
2960 | if (ctx->xin->xcache) { |
2961 | struct xc_entry *entry; | |
2962 | ||
2963 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_NETDEV); | |
2964 | entry->u.dev.tx = netdev_ref(xport->netdev); | |
2965 | } | |
9583bc14 | 2966 | out_port = odp_port; |
a36de779 | 2967 | if (ovs_native_tunneling_is_on(ctx->xbridge->ofproto)) { |
81de18ec | 2968 | xlate_report(ctx, "output to native tunnel"); |
a36de779 PS |
2969 | tnl_push_pop_send = true; |
2970 | } else { | |
81de18ec | 2971 | xlate_report(ctx, "output to kernel tunnel"); |
1520ef4f | 2972 | commit_odp_tunnel_action(flow, &ctx->base_flow, ctx->odp_actions); |
a36de779 PS |
2973 | flow->tunnel = flow_tnl; /* Restore tunnel metadata */ |
2974 | } | |
9583bc14 | 2975 | } else { |
46c88433 | 2976 | odp_port = xport->odp_port; |
7614e5d0 | 2977 | out_port = odp_port; |
46c88433 | 2978 | if (ofproto_has_vlan_splinters(ctx->xbridge->ofproto)) { |
7614e5d0 JR |
2979 | ofp_port_t vlandev_port; |
2980 | ||
1dd35f8a | 2981 | wc->masks.vlan_tci |= htons(VLAN_VID_MASK | VLAN_CFI); |
7614e5d0 JR |
2982 | vlandev_port = vsp_realdev_to_vlandev(ctx->xbridge->ofproto, |
2983 | ofp_port, flow->vlan_tci); | |
2984 | if (vlandev_port != ofp_port) { | |
2985 | out_port = ofp_port_to_odp_port(ctx->xbridge, vlandev_port); | |
2986 | flow->vlan_tci = htons(0); | |
2987 | } | |
9583bc14 | 2988 | } |
9583bc14 | 2989 | } |
9583bc14 | 2990 | |
4e022ec0 | 2991 | if (out_port != ODPP_NONE) { |
b440dd8c JS |
2992 | bool use_masked = ctx->xbridge->support.masked_set_action; |
2993 | ||
7fd91025 | 2994 | ctx->xout->slow |= commit_odp_actions(flow, &ctx->base_flow, |
1520ef4f | 2995 | ctx->odp_actions, |
b440dd8c | 2996 | wc, use_masked); |
adcf00ba | 2997 | |
e93ef1c7 | 2998 | if (xr) { |
347bf289 | 2999 | struct ovs_action_hash *act_hash; |
adcf00ba | 3000 | |
347bf289 | 3001 | /* Hash action. */ |
1520ef4f | 3002 | act_hash = nl_msg_put_unspec_uninit(ctx->odp_actions, |
347bf289 AZ |
3003 | OVS_ACTION_ATTR_HASH, |
3004 | sizeof *act_hash); | |
3005 | act_hash->hash_alg = xr->hash_alg; | |
62ac1f20 | 3006 | act_hash->hash_basis = xr->hash_basis; |
347bf289 AZ |
3007 | |
3008 | /* Recirc action. */ | |
1520ef4f | 3009 | nl_msg_put_u32(ctx->odp_actions, OVS_ACTION_ATTR_RECIRC, |
347bf289 | 3010 | xr->recirc_id); |
adcf00ba | 3011 | } else { |
a36de779 PS |
3012 | |
3013 | if (tnl_push_pop_send) { | |
3014 | build_tunnel_send(ctx, xport, flow, odp_port); | |
3015 | flow->tunnel = flow_tnl; /* Restore tunnel metadata */ | |
3016 | } else { | |
3017 | odp_port_t odp_tnl_port = ODPP_NONE; | |
3018 | ||
3019 | /* XXX: Write better Filter for tunnel port. We can use inport | |
3020 | * int tunnel-port flow to avoid these checks completely. */ | |
3021 | if (ofp_port == OFPP_LOCAL && | |
3022 | ovs_native_tunneling_is_on(ctx->xbridge->ofproto)) { | |
3023 | ||
3024 | odp_tnl_port = tnl_port_map_lookup(flow, wc); | |
3025 | } | |
3026 | ||
3027 | if (odp_tnl_port != ODPP_NONE) { | |
1520ef4f | 3028 | nl_msg_put_odp_port(ctx->odp_actions, |
a36de779 PS |
3029 | OVS_ACTION_ATTR_TUNNEL_POP, |
3030 | odp_tnl_port); | |
3031 | } else { | |
3032 | /* Tunnel push-pop action is not compatible with | |
3033 | * IPFIX action. */ | |
a6092018 | 3034 | compose_ipfix_action(ctx, out_port); |
1520ef4f | 3035 | nl_msg_put_odp_port(ctx->odp_actions, |
a36de779 PS |
3036 | OVS_ACTION_ATTR_OUTPUT, |
3037 | out_port); | |
3038 | } | |
3039 | } | |
adcf00ba | 3040 | } |
9583bc14 | 3041 | |
6cbbf4fa EJ |
3042 | ctx->sflow_odp_port = odp_port; |
3043 | ctx->sflow_n_outputs++; | |
3044 | ctx->xout->nf_output_iface = ofp_port; | |
3045 | } | |
3046 | ||
3047 | out: | |
9583bc14 | 3048 | /* Restore flow */ |
33bf9176 | 3049 | flow->vlan_tci = flow_vlan_tci; |
1362e248 | 3050 | flow->pkt_mark = flow_pkt_mark; |
33bf9176 | 3051 | flow->nw_tos = flow_nw_tos; |
9583bc14 EJ |
3052 | } |
3053 | ||
3054 | static void | |
e93ef1c7 JR |
3055 | compose_output_action(struct xlate_ctx *ctx, ofp_port_t ofp_port, |
3056 | const struct xlate_bond_recirc *xr) | |
9583bc14 | 3057 | { |
e93ef1c7 | 3058 | compose_output_action__(ctx, ofp_port, xr, true); |
9583bc14 EJ |
3059 | } |
3060 | ||
bb61b33d BP |
3061 | static void |
3062 | xlate_recursively(struct xlate_ctx *ctx, struct rule_dpif *rule) | |
bb61b33d BP |
3063 | { |
3064 | struct rule_dpif *old_rule = ctx->rule; | |
8b1e5560 | 3065 | ovs_be64 old_cookie = ctx->rule_cookie; |
dc723c44 | 3066 | const struct rule_actions *actions; |
bb61b33d BP |
3067 | |
3068 | if (ctx->xin->resubmit_stats) { | |
70742c7f | 3069 | rule_dpif_credit_stats(rule, ctx->xin->resubmit_stats); |
bb61b33d BP |
3070 | } |
3071 | ||
98b07853 | 3072 | ctx->resubmits++; |
bb61b33d BP |
3073 | ctx->recurse++; |
3074 | ctx->rule = rule; | |
8b1e5560 | 3075 | ctx->rule_cookie = rule_dpif_get_flow_cookie(rule); |
6f00e29b BP |
3076 | actions = rule_dpif_get_actions(rule); |
3077 | do_xlate_actions(actions->ofpacts, actions->ofpacts_len, ctx); | |
8b1e5560 | 3078 | ctx->rule_cookie = old_cookie; |
bb61b33d BP |
3079 | ctx->rule = old_rule; |
3080 | ctx->recurse--; | |
bb61b33d BP |
3081 | } |
3082 | ||
bd3240ba SH |
3083 | static bool |
3084 | xlate_resubmit_resource_check(struct xlate_ctx *ctx) | |
9583bc14 | 3085 | { |
98b07853 BP |
3086 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); |
3087 | ||
adcf00ba | 3088 | if (ctx->recurse >= MAX_RESUBMIT_RECURSION + MAX_INTERNAL_RESUBMITS) { |
98b07853 BP |
3089 | VLOG_ERR_RL(&rl, "resubmit actions recursed over %d times", |
3090 | MAX_RESUBMIT_RECURSION); | |
adcf00ba | 3091 | } else if (ctx->resubmits >= MAX_RESUBMITS + MAX_INTERNAL_RESUBMITS) { |
98b07853 | 3092 | VLOG_ERR_RL(&rl, "over %d resubmit actions", MAX_RESUBMITS); |
1520ef4f | 3093 | } else if (ctx->odp_actions->size > UINT16_MAX) { |
98b07853 | 3094 | VLOG_ERR_RL(&rl, "resubmits yielded over 64 kB of actions"); |
6fd6ed71 | 3095 | } else if (ctx->stack.size >= 65536) { |
98b07853 BP |
3096 | VLOG_ERR_RL(&rl, "resubmits yielded over 64 kB of stack"); |
3097 | } else { | |
bd3240ba SH |
3098 | return true; |
3099 | } | |
3100 | ||
3101 | return false; | |
3102 | } | |
3103 | ||
3104 | static void | |
6d328fa2 SH |
3105 | xlate_table_action(struct xlate_ctx *ctx, ofp_port_t in_port, uint8_t table_id, |
3106 | bool may_packet_in, bool honor_table_miss) | |
bd3240ba | 3107 | { |
1d741d6d JR |
3108 | /* Check if we need to recirculate before matching in a table. */ |
3109 | if (ctx->was_mpls) { | |
3110 | ctx_trigger_recirculation(ctx); | |
3111 | return; | |
3112 | } | |
bd3240ba | 3113 | if (xlate_resubmit_resource_check(ctx)) { |
9583bc14 | 3114 | uint8_t old_table_id = ctx->table_id; |
3f207910 | 3115 | struct rule_dpif *rule; |
9583bc14 EJ |
3116 | |
3117 | ctx->table_id = table_id; | |
3118 | ||
34dd0d78 | 3119 | rule = rule_dpif_lookup_from_table(ctx->xbridge->ofproto, |
621b8064 | 3120 | ctx->tables_version, |
49a73e0c | 3121 | &ctx->xin->flow, ctx->xin->wc, |
34dd0d78 JR |
3122 | ctx->xin->xcache != NULL, |
3123 | ctx->xin->resubmit_stats, | |
3124 | &ctx->table_id, in_port, | |
3125 | may_packet_in, honor_table_miss); | |
9583bc14 | 3126 | |
a8c31348 BP |
3127 | if (OVS_UNLIKELY(ctx->xin->resubmit_hook)) { |
3128 | ctx->xin->resubmit_hook(ctx->xin, rule, ctx->recurse + 1); | |
ad3efdcb EJ |
3129 | } |
3130 | ||
a2143702 | 3131 | if (rule) { |
83709dfa JR |
3132 | /* Fill in the cache entry here instead of xlate_recursively |
3133 | * to make the reference counting more explicit. We take a | |
3134 | * reference in the lookups above if we are going to cache the | |
3135 | * rule. */ | |
3136 | if (ctx->xin->xcache) { | |
3137 | struct xc_entry *entry; | |
3138 | ||
3139 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_RULE); | |
3140 | entry->u.rule = rule; | |
3141 | } | |
bb61b33d | 3142 | xlate_recursively(ctx, rule); |
ad3efdcb EJ |
3143 | } |
3144 | ||
9583bc14 | 3145 | ctx->table_id = old_table_id; |
98b07853 | 3146 | return; |
9583bc14 | 3147 | } |
98b07853 BP |
3148 | |
3149 | ctx->exit = true; | |
9583bc14 EJ |
3150 | } |
3151 | ||
f4fb341b | 3152 | static void |
1e684d7d RW |
3153 | xlate_group_stats(struct xlate_ctx *ctx, struct group_dpif *group, |
3154 | struct ofputil_bucket *bucket) | |
3155 | { | |
3156 | if (ctx->xin->resubmit_stats) { | |
3157 | group_dpif_credit_stats(group, bucket, ctx->xin->resubmit_stats); | |
3158 | } | |
3159 | if (ctx->xin->xcache) { | |
3160 | struct xc_entry *entry; | |
3161 | ||
3162 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_GROUP); | |
3163 | entry->u.group.group = group_dpif_ref(group); | |
3164 | entry->u.group.bucket = bucket; | |
3165 | } | |
3166 | } | |
3167 | ||
3168 | static void | |
3169 | xlate_group_bucket(struct xlate_ctx *ctx, struct ofputil_bucket *bucket) | |
f4fb341b SH |
3170 | { |
3171 | uint64_t action_list_stub[1024 / 8]; | |
3172 | struct ofpbuf action_list, action_set; | |
5b09e569 JR |
3173 | struct flow old_flow = ctx->xin->flow; |
3174 | bool old_was_mpls = ctx->was_mpls; | |
f4fb341b SH |
3175 | |
3176 | ofpbuf_use_const(&action_set, bucket->ofpacts, bucket->ofpacts_len); | |
3177 | ofpbuf_use_stub(&action_list, action_list_stub, sizeof action_list_stub); | |
3178 | ||
3179 | ofpacts_execute_action_set(&action_list, &action_set); | |
3180 | ctx->recurse++; | |
6fd6ed71 | 3181 | do_xlate_actions(action_list.data, action_list.size, ctx); |
f4fb341b SH |
3182 | ctx->recurse--; |
3183 | ||
3184 | ofpbuf_uninit(&action_set); | |
3185 | ofpbuf_uninit(&action_list); | |
5b09e569 | 3186 | |
e672ff9b JR |
3187 | /* Check if need to recirculate. */ |
3188 | if (exit_recirculates(ctx)) { | |
3189 | compose_recirculate_action(ctx); | |
3190 | } | |
3191 | ||
5b09e569 JR |
3192 | /* Roll back flow to previous state. |
3193 | * This is equivalent to cloning the packet for each bucket. | |
3194 | * | |
3195 | * As a side effect any subsequently applied actions will | |
3196 | * also effectively be applied to a clone of the packet taken | |
3197 | * just before applying the all or indirect group. | |
3198 | * | |
3199 | * Note that group buckets are action sets, hence they cannot modify the | |
3200 | * main action set. Also any stack actions are ignored when executing an | |
3201 | * action set, so group buckets cannot change the stack either. | |
3202 | * However, we do allow resubmit actions in group buckets, which could | |
3203 | * break the above assumptions. It is up to the controller to not mess up | |
3204 | * with the action_set and stack in the tables resubmitted to from | |
3205 | * group buckets. */ | |
3206 | ctx->xin->flow = old_flow; | |
3207 | ||
3208 | /* The group bucket popping MPLS should have no effect after bucket | |
3209 | * execution. */ | |
3210 | ctx->was_mpls = old_was_mpls; | |
3211 | ||
3212 | /* The fact that the group bucket exits (for any reason) does not mean that | |
3213 | * the translation after the group action should exit. Specifically, if | |
3214 | * the group bucket recirculates (which typically modifies the packet), the | |
3215 | * actions after the group action must continue processing with the | |
3216 | * original, not the recirculated packet! */ | |
3217 | ctx->exit = false; | |
f4fb341b SH |
3218 | } |
3219 | ||
3220 | static void | |
3221 | xlate_all_group(struct xlate_ctx *ctx, struct group_dpif *group) | |
3222 | { | |
1e684d7d | 3223 | struct ofputil_bucket *bucket; |
ca6ba700 | 3224 | const struct ovs_list *buckets; |
f4fb341b SH |
3225 | |
3226 | group_dpif_get_buckets(group, &buckets); | |
3227 | ||
3228 | LIST_FOR_EACH (bucket, list_node, buckets) { | |
3229 | xlate_group_bucket(ctx, bucket); | |
f4fb341b | 3230 | } |
1e684d7d | 3231 | xlate_group_stats(ctx, group, NULL); |
f4fb341b SH |
3232 | } |
3233 | ||
dd8cd4b4 SH |
3234 | static void |
3235 | xlate_ff_group(struct xlate_ctx *ctx, struct group_dpif *group) | |
3236 | { | |
1e684d7d | 3237 | struct ofputil_bucket *bucket; |
dd8cd4b4 SH |
3238 | |
3239 | bucket = group_first_live_bucket(ctx, group, 0); | |
3240 | if (bucket) { | |
3241 | xlate_group_bucket(ctx, bucket); | |
1e684d7d | 3242 | xlate_group_stats(ctx, group, bucket); |
dd8cd4b4 SH |
3243 | } |
3244 | } | |
3245 | ||
fe7e5749 | 3246 | static void |
7565c3e4 | 3247 | xlate_default_select_group(struct xlate_ctx *ctx, struct group_dpif *group) |
fe7e5749 | 3248 | { |
49a73e0c | 3249 | struct flow_wildcards *wc = ctx->wc; |
1e684d7d | 3250 | struct ofputil_bucket *bucket; |
fe7e5749 SH |
3251 | uint32_t basis; |
3252 | ||
1d1aae0b | 3253 | basis = flow_hash_symmetric_l4(&ctx->xin->flow, 0); |
80e3509d | 3254 | flow_mask_hash_fields(&ctx->xin->flow, wc, NX_HASH_FIELDS_SYMMETRIC_L4); |
fe7e5749 SH |
3255 | bucket = group_best_live_bucket(ctx, group, basis); |
3256 | if (bucket) { | |
fe7e5749 | 3257 | xlate_group_bucket(ctx, bucket); |
1e684d7d | 3258 | xlate_group_stats(ctx, group, bucket); |
fe7e5749 SH |
3259 | } |
3260 | } | |
3261 | ||
0c4b9393 SH |
3262 | static void |
3263 | xlate_hash_fields_select_group(struct xlate_ctx *ctx, struct group_dpif *group) | |
3264 | { | |
3265 | struct mf_bitmap hash_fields = MF_BITMAP_INITIALIZER; | |
0c4b9393 SH |
3266 | const struct field_array *fields; |
3267 | struct ofputil_bucket *bucket; | |
3268 | uint32_t basis; | |
3269 | int i; | |
3270 | ||
3271 | fields = group_dpif_get_fields(group); | |
3272 | basis = hash_uint64(group_dpif_get_selection_method_param(group)); | |
3273 | ||
3274 | /* Determine which fields to hash */ | |
3275 | for (i = 0; i < MFF_N_IDS; i++) { | |
3276 | if (bitmap_is_set(fields->used.bm, i)) { | |
3277 | const struct mf_field *mf; | |
3278 | ||
3279 | /* If the field is already present in 'hash_fields' then | |
3280 | * this loop has already checked that it and its pre-requisites | |
3281 | * are present in the flow and its pre-requisites have | |
3282 | * already been added to 'hash_fields'. There is nothing more | |
3283 | * to do here and as an optimisation the loop can continue. */ | |
3284 | if (bitmap_is_set(hash_fields.bm, i)) { | |
3285 | continue; | |
3286 | } | |
3287 | ||
3288 | mf = mf_from_id(i); | |
3289 | ||
3290 | /* Only hash a field if it and its pre-requisites are present | |
3291 | * in the flow. */ | |
3292 | if (!mf_are_prereqs_ok(mf, &ctx->xin->flow)) { | |
3293 | continue; | |
3294 | } | |
3295 | ||
3296 | /* Hash both the field and its pre-requisites */ | |
3297 | mf_bitmap_set_field_and_prereqs(mf, &hash_fields); | |
3298 | } | |
3299 | } | |
3300 | ||
3301 | /* Hash the fields */ | |
3302 | for (i = 0; i < MFF_N_IDS; i++) { | |
3303 | if (bitmap_is_set(hash_fields.bm, i)) { | |
3304 | const struct mf_field *mf = mf_from_id(i); | |
3305 | union mf_value value; | |
3306 | int j; | |
3307 | ||
3308 | mf_get_value(mf, &ctx->xin->flow, &value); | |
3309 | /* This seems inefficient but so does apply_mask() */ | |
3310 | for (j = 0; j < mf->n_bytes; j++) { | |
3311 | ((uint8_t *) &value)[j] &= ((uint8_t *) &fields->value[i])[j]; | |
3312 | } | |
3313 | basis = hash_bytes(&value, mf->n_bytes, basis); | |
3314 | ||
49a73e0c | 3315 | mf_mask_field(mf, &ctx->wc->masks); |
0c4b9393 SH |
3316 | } |
3317 | } | |
3318 | ||
3319 | bucket = group_best_live_bucket(ctx, group, basis); | |
3320 | if (bucket) { | |
3321 | xlate_group_bucket(ctx, bucket); | |
3322 | xlate_group_stats(ctx, group, bucket); | |
3323 | } | |
3324 | } | |
3325 | ||
7565c3e4 SH |
3326 | static void |
3327 | xlate_select_group(struct xlate_ctx *ctx, struct group_dpif *group) | |
3328 | { | |
3329 | const char *selection_method = group_dpif_get_selection_method(group); | |
3330 | ||
3331 | if (selection_method[0] == '\0') { | |
3332 | xlate_default_select_group(ctx, group); | |
0c4b9393 SH |
3333 | } else if (!strcasecmp("hash", selection_method)) { |
3334 | xlate_hash_fields_select_group(ctx, group); | |
7565c3e4 SH |
3335 | } else { |
3336 | /* Parsing of groups should ensure this never happens */ | |
3337 | OVS_NOT_REACHED(); | |
3338 | } | |
3339 | } | |
3340 | ||
f4fb341b SH |
3341 | static void |
3342 | xlate_group_action__(struct xlate_ctx *ctx, struct group_dpif *group) | |
3343 | { | |
0eb48fe1 | 3344 | bool was_in_group = ctx->in_group; |
5a070238 BP |
3345 | ctx->in_group = true; |
3346 | ||
f4fb341b SH |
3347 | switch (group_dpif_get_type(group)) { |
3348 | case OFPGT11_ALL: | |
3349 | case OFPGT11_INDIRECT: | |
3350 | xlate_all_group(ctx, group); | |
3351 | break; | |
3352 | case OFPGT11_SELECT: | |
fe7e5749 | 3353 | xlate_select_group(ctx, group); |
f4fb341b | 3354 | break; |
dd8cd4b4 SH |
3355 | case OFPGT11_FF: |
3356 | xlate_ff_group(ctx, group); | |
3357 | break; | |
f4fb341b | 3358 | default: |
428b2edd | 3359 | OVS_NOT_REACHED(); |
f4fb341b | 3360 | } |
809c7548 | 3361 | group_dpif_unref(group); |
5a070238 | 3362 | |
0eb48fe1 | 3363 | ctx->in_group = was_in_group; |
f4fb341b SH |
3364 | } |
3365 | ||
3366 | static bool | |
3367 | xlate_group_action(struct xlate_ctx *ctx, uint32_t group_id) | |
3368 | { | |
0eb48fe1 | 3369 | if (xlate_resubmit_resource_check(ctx)) { |
f4fb341b SH |
3370 | struct group_dpif *group; |
3371 | bool got_group; | |
3372 | ||
3373 | got_group = group_dpif_lookup(ctx->xbridge->ofproto, group_id, &group); | |
3374 | if (got_group) { | |
3375 | xlate_group_action__(ctx, group); | |
3376 | } else { | |
3377 | return true; | |
3378 | } | |
3379 | } | |
3380 | ||
3381 | return false; | |
3382 | } | |
3383 | ||
9583bc14 EJ |
3384 | static void |
3385 | xlate_ofpact_resubmit(struct xlate_ctx *ctx, | |
3386 | const struct ofpact_resubmit *resubmit) | |
3387 | { | |
4e022ec0 | 3388 | ofp_port_t in_port; |
9583bc14 | 3389 | uint8_t table_id; |
adcf00ba AZ |
3390 | bool may_packet_in = false; |
3391 | bool honor_table_miss = false; | |
3392 | ||
3393 | if (ctx->rule && rule_dpif_is_internal(ctx->rule)) { | |
3394 | /* Still allow missed packets to be sent to the controller | |
3395 | * if resubmitting from an internal table. */ | |
3396 | may_packet_in = true; | |
3397 | honor_table_miss = true; | |
3398 | } | |
9583bc14 EJ |
3399 | |
3400 | in_port = resubmit->in_port; | |
3401 | if (in_port == OFPP_IN_PORT) { | |
4e022ec0 | 3402 | in_port = ctx->xin->flow.in_port.ofp_port; |
9583bc14 EJ |
3403 | } |
3404 | ||
3405 | table_id = resubmit->table_id; | |
3406 | if (table_id == 255) { | |
3407 | table_id = ctx->table_id; | |
3408 | } | |
3409 | ||
adcf00ba AZ |
3410 | xlate_table_action(ctx, in_port, table_id, may_packet_in, |
3411 | honor_table_miss); | |
9583bc14 EJ |
3412 | } |
3413 | ||
3414 | static void | |
3415 | flood_packets(struct xlate_ctx *ctx, bool all) | |
3416 | { | |
46c88433 | 3417 | const struct xport *xport; |
9583bc14 | 3418 | |
46c88433 EJ |
3419 | HMAP_FOR_EACH (xport, ofp_node, &ctx->xbridge->xports) { |
3420 | if (xport->ofp_port == ctx->xin->flow.in_port.ofp_port) { | |
9583bc14 EJ |
3421 | continue; |
3422 | } | |
3423 | ||
3424 | if (all) { | |
e93ef1c7 | 3425 | compose_output_action__(ctx, xport->ofp_port, NULL, false); |
46c88433 | 3426 | } else if (!(xport->config & OFPUTIL_PC_NO_FLOOD)) { |
e93ef1c7 | 3427 | compose_output_action(ctx, xport->ofp_port, NULL); |
9583bc14 EJ |
3428 | } |
3429 | } | |
3430 | ||
3431 | ctx->xout->nf_output_iface = NF_OUT_FLOOD; | |
3432 | } | |
3433 | ||
3434 | static void | |
3435 | execute_controller_action(struct xlate_ctx *ctx, int len, | |
3436 | enum ofp_packet_in_reason reason, | |
3437 | uint16_t controller_id) | |
3438 | { | |
0fb7792a | 3439 | struct ofproto_packet_in *pin; |
e14deea0 | 3440 | struct dp_packet *packet; |
b440dd8c | 3441 | bool use_masked; |
9583bc14 | 3442 | |
04594cd5 | 3443 | ctx->xout->slow |= SLOW_CONTROLLER; |
9583bc14 EJ |
3444 | if (!ctx->xin->packet) { |
3445 | return; | |
3446 | } | |
3447 | ||
cf62fa4c | 3448 | packet = dp_packet_clone(ctx->xin->packet); |
9583bc14 | 3449 | |
b440dd8c | 3450 | use_masked = ctx->xbridge->support.masked_set_action; |
7fd91025 | 3451 | ctx->xout->slow |= commit_odp_actions(&ctx->xin->flow, &ctx->base_flow, |
1520ef4f | 3452 | ctx->odp_actions, |
49a73e0c | 3453 | ctx->wc, use_masked); |
9583bc14 | 3454 | |
41ccaa24 | 3455 | odp_execute_actions(NULL, &packet, 1, false, |
1520ef4f | 3456 | ctx->odp_actions->data, ctx->odp_actions->size, NULL); |
9583bc14 | 3457 | |
ada3a58d | 3458 | pin = xmalloc(sizeof *pin); |
cf62fa4c PS |
3459 | pin->up.packet_len = dp_packet_size(packet); |
3460 | pin->up.packet = dp_packet_steal_data(packet); | |
0fb7792a | 3461 | pin->up.reason = reason; |
0fb7792a | 3462 | pin->up.table_id = ctx->table_id; |
8b1e5560 | 3463 | pin->up.cookie = ctx->rule_cookie; |
0fb7792a | 3464 | |
50dcbd8e | 3465 | flow_get_metadata(&ctx->xin->flow, &pin->up.flow_metadata); |
9583bc14 | 3466 | |
f11c7538 | 3467 | pin->controller_id = controller_id; |
d38a3c7b | 3468 | pin->send_len = len; |
32260212 SH |
3469 | /* If a rule is a table-miss rule then this is |
3470 | * a table-miss handled by a table-miss rule. | |
3471 | * | |
3472 | * Else, if rule is internal and has a controller action, | |
3473 | * the later being implied by the rule being processed here, | |
3474 | * then this is a table-miss handled without a table-miss rule. | |
3475 | * | |
3476 | * Otherwise this is not a table-miss. */ | |
3477 | pin->miss_type = OFPROTO_PACKET_IN_NO_MISS; | |
3478 | if (ctx->rule) { | |
3479 | if (rule_dpif_is_table_miss(ctx->rule)) { | |
3480 | pin->miss_type = OFPROTO_PACKET_IN_MISS_FLOW; | |
3481 | } else if (rule_dpif_is_internal(ctx->rule)) { | |
3482 | pin->miss_type = OFPROTO_PACKET_IN_MISS_WITHOUT_FLOW; | |
3483 | } | |
3484 | } | |
ada3a58d | 3485 | ofproto_dpif_send_packet_in(ctx->xbridge->ofproto, pin); |
e14deea0 | 3486 | dp_packet_delete(packet); |
9583bc14 EJ |
3487 | } |
3488 | ||
e672ff9b | 3489 | /* Called only when ctx->recirc_action_offset is set. */ |
7bbdd84f | 3490 | static void |
e672ff9b | 3491 | compose_recirculate_action(struct xlate_ctx *ctx) |
7bbdd84f | 3492 | { |
e672ff9b | 3493 | struct recirc_metadata md; |
b440dd8c | 3494 | bool use_masked; |
7bbdd84f | 3495 | uint32_t id; |
7bbdd84f | 3496 | |
b440dd8c | 3497 | use_masked = ctx->xbridge->support.masked_set_action; |
e672ff9b | 3498 | ctx->xout->slow |= commit_odp_actions(&ctx->xin->flow, &ctx->base_flow, |
1520ef4f | 3499 | ctx->odp_actions, |
49a73e0c | 3500 | ctx->wc, use_masked); |
7bbdd84f | 3501 | |
e672ff9b | 3502 | recirc_metadata_from_flow(&md, &ctx->xin->flow); |
7bbdd84f | 3503 | |
e672ff9b | 3504 | ovs_assert(ctx->recirc_action_offset >= 0); |
7bbdd84f | 3505 | |
e672ff9b JR |
3506 | /* Only allocate recirculation ID if we have a packet. */ |
3507 | if (ctx->xin->packet) { | |
3508 | /* Allocate a unique recirc id for the given metadata state in the | |
3509 | * flow. The life-cycle of this recirc id is managed by associating it | |
3510 | * with the udpif key ('ukey') created for each new datapath flow. */ | |
3511 | id = recirc_alloc_id_ctx(ctx->xbridge->ofproto, 0, &md, &ctx->stack, | |
3512 | ctx->recirc_action_offset, | |
3513 | ctx->action_set.size, ctx->action_set.data); | |
3514 | if (!id) { | |
3515 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
3516 | VLOG_ERR_RL(&rl, "Failed to allocate recirculation id"); | |
3517 | return; | |
e2676b44 | 3518 | } |
e672ff9b JR |
3519 | xlate_out_add_recirc(ctx->xout, id); |
3520 | } else { | |
3521 | /* Look up an existing recirc id for the given metadata state in the | |
3522 | * flow. No new reference is taken, as the ID is RCU protected and is | |
3523 | * only required temporarily for verification. */ | |
3524 | id = recirc_find_id(ctx->xbridge->ofproto, 0, &md, &ctx->stack, | |
3525 | ctx->recirc_action_offset, | |
3526 | ctx->action_set.size, ctx->action_set.data); | |
3527 | /* We let zero 'id' to be used in the RECIRC action below, which will | |
3528 | * fail all revalidations as zero is not a valid recirculation ID. */ | |
7bbdd84f SH |
3529 | } |
3530 | ||
1520ef4f | 3531 | nl_msg_put_u32(ctx->odp_actions, OVS_ACTION_ATTR_RECIRC, id); |
e672ff9b JR |
3532 | |
3533 | /* Undo changes done by recirculation. */ | |
3534 | ctx->action_set.size = ctx->recirc_action_offset; | |
3535 | ctx->recirc_action_offset = -1; | |
3536 | ctx->last_unroll_offset = -1; | |
7bbdd84f SH |
3537 | } |
3538 | ||
8bfd0fda BP |
3539 | static void |
3540 | compose_mpls_push_action(struct xlate_ctx *ctx, struct ofpact_push_mpls *mpls) | |
9583bc14 | 3541 | { |
33bf9176 | 3542 | struct flow *flow = &ctx->xin->flow; |
8bfd0fda | 3543 | int n; |
33bf9176 | 3544 | |
8bfd0fda | 3545 | ovs_assert(eth_type_mpls(mpls->ethertype)); |
b0a17866 | 3546 | |
49a73e0c | 3547 | n = flow_count_mpls_labels(flow, ctx->wc); |
8bfd0fda | 3548 | if (!n) { |
b440dd8c JS |
3549 | bool use_masked = ctx->xbridge->support.masked_set_action; |
3550 | ||
8bfd0fda | 3551 | ctx->xout->slow |= commit_odp_actions(flow, &ctx->base_flow, |
1520ef4f | 3552 | ctx->odp_actions, |
49a73e0c | 3553 | ctx->wc, use_masked); |
8bfd0fda BP |
3554 | } else if (n >= FLOW_MAX_MPLS_LABELS) { |
3555 | if (ctx->xin->packet != NULL) { | |
3556 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
3557 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet on which an " | |
3558 | "MPLS push action can't be performed as it would " | |
3559 | "have more MPLS LSEs than the %d supported.", | |
3560 | ctx->xbridge->name, FLOW_MAX_MPLS_LABELS); | |
9583bc14 | 3561 | } |
8bfd0fda BP |
3562 | ctx->exit = true; |
3563 | return; | |
9583bc14 | 3564 | } |
b0a17866 | 3565 | |
49a73e0c | 3566 | flow_push_mpls(flow, n, mpls->ethertype, ctx->wc); |
9583bc14 EJ |
3567 | } |
3568 | ||
8bfd0fda | 3569 | static void |
9cfef3d0 | 3570 | compose_mpls_pop_action(struct xlate_ctx *ctx, ovs_be16 eth_type) |
9583bc14 | 3571 | { |
8bfd0fda | 3572 | struct flow *flow = &ctx->xin->flow; |
49a73e0c | 3573 | int n = flow_count_mpls_labels(flow, ctx->wc); |
33bf9176 | 3574 | |
49a73e0c | 3575 | if (flow_pop_mpls(flow, n, eth_type, ctx->wc)) { |
2494ccd7 | 3576 | if (ctx->xbridge->support.odp.recirc) { |
7bbdd84f SH |
3577 | ctx->was_mpls = true; |
3578 | } | |
3579 | } else if (n >= FLOW_MAX_MPLS_LABELS) { | |
8bfd0fda BP |
3580 | if (ctx->xin->packet != NULL) { |
3581 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
3582 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet on which an " | |
3583 | "MPLS pop action can't be performed as it has " | |
3584 | "more MPLS LSEs than the %d supported.", | |
3585 | ctx->xbridge->name, FLOW_MAX_MPLS_LABELS); | |
3586 | } | |
3587 | ctx->exit = true; | |
1520ef4f | 3588 | ofpbuf_clear(ctx->odp_actions); |
9583bc14 EJ |
3589 | } |
3590 | } | |
3591 | ||
3592 | static bool | |
3593 | compose_dec_ttl(struct xlate_ctx *ctx, struct ofpact_cnt_ids *ids) | |
3594 | { | |
33bf9176 BP |
3595 | struct flow *flow = &ctx->xin->flow; |
3596 | ||
3597 | if (!is_ip_any(flow)) { | |
9583bc14 EJ |
3598 | return false; |
3599 | } | |
3600 | ||
49a73e0c | 3601 | ctx->wc->masks.nw_ttl = 0xff; |
33bf9176 BP |
3602 | if (flow->nw_ttl > 1) { |
3603 | flow->nw_ttl--; | |
9583bc14 EJ |
3604 | return false; |
3605 | } else { | |
3606 | size_t i; | |
3607 | ||
3608 | for (i = 0; i < ids->n_controllers; i++) { | |
3609 | execute_controller_action(ctx, UINT16_MAX, OFPR_INVALID_TTL, | |
3610 | ids->cnt_ids[i]); | |
3611 | } | |
3612 | ||
3613 | /* Stop processing for current table. */ | |
3614 | return true; | |
3615 | } | |
3616 | } | |
3617 | ||
8bfd0fda | 3618 | static void |
097d4939 JR |
3619 | compose_set_mpls_label_action(struct xlate_ctx *ctx, ovs_be32 label) |
3620 | { | |
8bfd0fda | 3621 | if (eth_type_mpls(ctx->xin->flow.dl_type)) { |
49a73e0c | 3622 | ctx->wc->masks.mpls_lse[0] |= htonl(MPLS_LABEL_MASK); |
8bfd0fda | 3623 | set_mpls_lse_label(&ctx->xin->flow.mpls_lse[0], label); |
097d4939 | 3624 | } |
097d4939 JR |
3625 | } |
3626 | ||
8bfd0fda | 3627 | static void |
097d4939 JR |
3628 | compose_set_mpls_tc_action(struct xlate_ctx *ctx, uint8_t tc) |
3629 | { | |
8bfd0fda | 3630 | if (eth_type_mpls(ctx->xin->flow.dl_type)) { |
49a73e0c | 3631 | ctx->wc->masks.mpls_lse[0] |= htonl(MPLS_TC_MASK); |
8bfd0fda | 3632 | set_mpls_lse_tc(&ctx->xin->flow.mpls_lse[0], tc); |
097d4939 | 3633 | } |
097d4939 JR |
3634 | } |
3635 | ||
8bfd0fda | 3636 | static void |
9cfef3d0 | 3637 | compose_set_mpls_ttl_action(struct xlate_ctx *ctx, uint8_t ttl) |
9583bc14 | 3638 | { |
8bfd0fda | 3639 | if (eth_type_mpls(ctx->xin->flow.dl_type)) { |
49a73e0c | 3640 | ctx->wc->masks.mpls_lse[0] |= htonl(MPLS_TTL_MASK); |
8bfd0fda | 3641 | set_mpls_lse_ttl(&ctx->xin->flow.mpls_lse[0], ttl); |
b0a17866 | 3642 | } |
9583bc14 EJ |
3643 | } |
3644 | ||
3645 | static bool | |
9cfef3d0 | 3646 | compose_dec_mpls_ttl_action(struct xlate_ctx *ctx) |
9583bc14 | 3647 | { |
33bf9176 | 3648 | struct flow *flow = &ctx->xin->flow; |
1dd35f8a | 3649 | |
8bfd0fda | 3650 | if (eth_type_mpls(flow->dl_type)) { |
22d38fca JR |
3651 | uint8_t ttl = mpls_lse_to_ttl(flow->mpls_lse[0]); |
3652 | ||
49a73e0c | 3653 | ctx->wc->masks.mpls_lse[0] |= htonl(MPLS_TTL_MASK); |
8bfd0fda BP |
3654 | if (ttl > 1) { |
3655 | ttl--; | |
3656 | set_mpls_lse_ttl(&flow->mpls_lse[0], ttl); | |
3657 | return false; | |
3658 | } else { | |
3659 | execute_controller_action(ctx, UINT16_MAX, OFPR_INVALID_TTL, 0); | |
8bfd0fda | 3660 | } |
9583bc14 | 3661 | } |
22d38fca JR |
3662 | |
3663 | /* Stop processing for current table. */ | |
3664 | return true; | |
9583bc14 EJ |
3665 | } |
3666 | ||
3667 | static void | |
3668 | xlate_output_action(struct xlate_ctx *ctx, | |
4e022ec0 | 3669 | ofp_port_t port, uint16_t max_len, bool may_packet_in) |
9583bc14 | 3670 | { |
4e022ec0 | 3671 | ofp_port_t prev_nf_output_iface = ctx->xout->nf_output_iface; |
9583bc14 EJ |
3672 | |
3673 | ctx->xout->nf_output_iface = NF_OUT_DROP; | |
3674 | ||
3675 | switch (port) { | |
3676 | case OFPP_IN_PORT: | |
e93ef1c7 | 3677 | compose_output_action(ctx, ctx->xin->flow.in_port.ofp_port, NULL); |
9583bc14 EJ |
3678 | break; |
3679 | case OFPP_TABLE: | |
4e022ec0 | 3680 | xlate_table_action(ctx, ctx->xin->flow.in_port.ofp_port, |
6d328fa2 | 3681 | 0, may_packet_in, true); |
9583bc14 EJ |
3682 | break; |
3683 | case OFPP_NORMAL: | |
3684 | xlate_normal(ctx); | |
3685 | break; | |
3686 | case OFPP_FLOOD: | |
3687 | flood_packets(ctx, false); | |
3688 | break; | |
3689 | case OFPP_ALL: | |
3690 | flood_packets(ctx, true); | |
3691 | break; | |
3692 | case OFPP_CONTROLLER: | |
3a11fd5b | 3693 | execute_controller_action(ctx, max_len, |
029ca940 SS |
3694 | (ctx->in_group ? OFPR_GROUP |
3695 | : ctx->in_action_set ? OFPR_ACTION_SET | |
3696 | : OFPR_ACTION), | |
3697 | 0); | |
9583bc14 EJ |
3698 | break; |
3699 | case OFPP_NONE: | |
3700 | break; | |
3701 | case OFPP_LOCAL: | |
3702 | default: | |
4e022ec0 | 3703 | if (port != ctx->xin->flow.in_port.ofp_port) { |
e93ef1c7 | 3704 | compose_output_action(ctx, port, NULL); |
9583bc14 EJ |
3705 | } else { |
3706 | xlate_report(ctx, "skipping output to input port"); | |
3707 | } | |
3708 | break; | |
3709 | } | |
3710 | ||
3711 | if (prev_nf_output_iface == NF_OUT_FLOOD) { | |
3712 | ctx->xout->nf_output_iface = NF_OUT_FLOOD; | |
3713 | } else if (ctx->xout->nf_output_iface == NF_OUT_DROP) { | |
3714 | ctx->xout->nf_output_iface = prev_nf_output_iface; | |
3715 | } else if (prev_nf_output_iface != NF_OUT_DROP && | |
3716 | ctx->xout->nf_output_iface != NF_OUT_FLOOD) { | |
3717 | ctx->xout->nf_output_iface = NF_OUT_MULTI; | |
3718 | } | |
3719 | } | |
3720 | ||
3721 | static void | |
3722 | xlate_output_reg_action(struct xlate_ctx *ctx, | |
3723 | const struct ofpact_output_reg *or) | |
3724 | { | |
3725 | uint64_t port = mf_get_subfield(&or->src, &ctx->xin->flow); | |
3726 | if (port <= UINT16_MAX) { | |
3727 | union mf_subvalue value; | |
3728 | ||
3729 | memset(&value, 0xff, sizeof value); | |
49a73e0c | 3730 | mf_write_subfield_flow(&or->src, &value, &ctx->wc->masks); |
4e022ec0 AW |
3731 | xlate_output_action(ctx, u16_to_ofp(port), |
3732 | or->max_len, false); | |
9583bc14 EJ |
3733 | } |
3734 | } | |
3735 | ||
3736 | static void | |
3737 | xlate_enqueue_action(struct xlate_ctx *ctx, | |
3738 | const struct ofpact_enqueue *enqueue) | |
3739 | { | |
4e022ec0 | 3740 | ofp_port_t ofp_port = enqueue->port; |
9583bc14 EJ |
3741 | uint32_t queue_id = enqueue->queue; |
3742 | uint32_t flow_priority, priority; | |
3743 | int error; | |
3744 | ||
3745 | /* Translate queue to priority. */ | |
89a8a7f0 | 3746 | error = dpif_queue_to_priority(ctx->xbridge->dpif, queue_id, &priority); |
9583bc14 EJ |
3747 | if (error) { |
3748 | /* Fall back to ordinary output action. */ | |
3749 | xlate_output_action(ctx, enqueue->port, 0, false); | |
3750 | return; | |
3751 | } | |
3752 | ||
3753 | /* Check output port. */ | |
3754 | if (ofp_port == OFPP_IN_PORT) { | |
4e022ec0 AW |
3755 | ofp_port = ctx->xin->flow.in_port.ofp_port; |
3756 | } else if (ofp_port == ctx->xin->flow.in_port.ofp_port) { | |
9583bc14 EJ |
3757 | return; |
3758 | } | |
3759 | ||
3760 | /* Add datapath actions. */ | |
3761 | flow_priority = ctx->xin->flow.skb_priority; | |
3762 | ctx->xin->flow.skb_priority = priority; | |
e93ef1c7 | 3763 | compose_output_action(ctx, ofp_port, NULL); |
9583bc14 EJ |
3764 | ctx->xin->flow.skb_priority = flow_priority; |
3765 | ||
3766 | /* Update NetFlow output port. */ | |
3767 | if (ctx->xout->nf_output_iface == NF_OUT_DROP) { | |
3768 | ctx->xout->nf_output_iface = ofp_port; | |
3769 | } else if (ctx->xout->nf_output_iface != NF_OUT_FLOOD) { | |
3770 | ctx->xout->nf_output_iface = NF_OUT_MULTI; | |
3771 | } | |
3772 | } | |
3773 | ||
3774 | static void | |
3775 | xlate_set_queue_action(struct xlate_ctx *ctx, uint32_t queue_id) | |
3776 | { | |
3777 | uint32_t skb_priority; | |
3778 | ||
89a8a7f0 | 3779 | if (!dpif_queue_to_priority(ctx->xbridge->dpif, queue_id, &skb_priority)) { |
9583bc14 EJ |
3780 | ctx->xin->flow.skb_priority = skb_priority; |
3781 | } else { | |
3782 | /* Couldn't translate queue to a priority. Nothing to do. A warning | |
3783 | * has already been logged. */ | |
3784 | } | |
3785 | } | |
3786 | ||
3787 | static bool | |
46c88433 | 3788 | slave_enabled_cb(ofp_port_t ofp_port, void *xbridge_) |
9583bc14 | 3789 | { |
46c88433 EJ |
3790 | const struct xbridge *xbridge = xbridge_; |
3791 | struct xport *port; | |
9583bc14 EJ |
3792 | |
3793 | switch (ofp_port) { | |
3794 | case OFPP_IN_PORT: | |
3795 | case OFPP_TABLE: | |
3796 | case OFPP_NORMAL: | |
3797 | case OFPP_FLOOD: | |
3798 | case OFPP_ALL: | |
3799 | case OFPP_NONE: | |
3800 | return true; | |
3801 | case OFPP_CONTROLLER: /* Not supported by the bundle action. */ | |
3802 | return false; | |
3803 | default: | |
46c88433 | 3804 | port = get_ofp_port(xbridge, ofp_port); |
9583bc14 EJ |
3805 | return port ? port->may_enable : false; |
3806 | } | |
3807 | } | |
3808 | ||
3809 | static void | |
3810 | xlate_bundle_action(struct xlate_ctx *ctx, | |
3811 | const struct ofpact_bundle *bundle) | |
3812 | { | |
4e022ec0 | 3813 | ofp_port_t port; |
9583bc14 | 3814 | |
49a73e0c | 3815 | port = bundle_execute(bundle, &ctx->xin->flow, ctx->wc, slave_enabled_cb, |
46c88433 | 3816 | CONST_CAST(struct xbridge *, ctx->xbridge)); |
9583bc14 | 3817 | if (bundle->dst.field) { |
49a73e0c | 3818 | nxm_reg_load(&bundle->dst, ofp_to_u16(port), &ctx->xin->flow, ctx->wc); |
9583bc14 EJ |
3819 | } else { |
3820 | xlate_output_action(ctx, port, 0, false); | |
3821 | } | |
3822 | } | |
3823 | ||
3824 | static void | |
4165b5e0 JS |
3825 | xlate_learn_action__(struct xlate_ctx *ctx, const struct ofpact_learn *learn, |
3826 | struct ofputil_flow_mod *fm, struct ofpbuf *ofpacts) | |
9583bc14 | 3827 | { |
4165b5e0 JS |
3828 | learn_execute(learn, &ctx->xin->flow, fm, ofpacts); |
3829 | if (ctx->xin->may_learn) { | |
3830 | ofproto_dpif_flow_mod(ctx->xbridge->ofproto, fm); | |
3831 | } | |
3832 | } | |
9583bc14 | 3833 | |
4165b5e0 JS |
3834 | static void |
3835 | xlate_learn_action(struct xlate_ctx *ctx, const struct ofpact_learn *learn) | |
3836 | { | |
9583bc14 | 3837 | ctx->xout->has_learn = true; |
49a73e0c | 3838 | learn_mask(learn, ctx->wc); |
9583bc14 | 3839 | |
b256dc52 JS |
3840 | if (ctx->xin->xcache) { |
3841 | struct xc_entry *entry; | |
3842 | ||
3843 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_LEARN); | |
4165b5e0 JS |
3844 | entry->u.learn.ofproto = ctx->xbridge->ofproto; |
3845 | entry->u.learn.fm = xmalloc(sizeof *entry->u.learn.fm); | |
3846 | entry->u.learn.ofpacts = ofpbuf_new(64); | |
3847 | xlate_learn_action__(ctx, learn, entry->u.learn.fm, | |
3848 | entry->u.learn.ofpacts); | |
3849 | } else if (ctx->xin->may_learn) { | |
3850 | uint64_t ofpacts_stub[1024 / 8]; | |
3851 | struct ofputil_flow_mod fm; | |
3852 | struct ofpbuf ofpacts; | |
3853 | ||
3854 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); | |
3855 | xlate_learn_action__(ctx, learn, &fm, &ofpacts); | |
3856 | ofpbuf_uninit(&ofpacts); | |
b256dc52 JS |
3857 | } |
3858 | } | |
3859 | ||
3860 | static void | |
3861 | xlate_fin_timeout__(struct rule_dpif *rule, uint16_t tcp_flags, | |
3862 | uint16_t idle_timeout, uint16_t hard_timeout) | |
3863 | { | |
3864 | if (tcp_flags & (TCP_FIN | TCP_RST)) { | |
3865 | rule_dpif_reduce_timeouts(rule, idle_timeout, hard_timeout); | |
3866 | } | |
9583bc14 EJ |
3867 | } |
3868 | ||
9583bc14 EJ |
3869 | static void |
3870 | xlate_fin_timeout(struct xlate_ctx *ctx, | |
3871 | const struct ofpact_fin_timeout *oft) | |
3872 | { | |
b256dc52 JS |
3873 | if (ctx->rule) { |
3874 | xlate_fin_timeout__(ctx->rule, ctx->xin->tcp_flags, | |
3875 | oft->fin_idle_timeout, oft->fin_hard_timeout); | |
3876 | if (ctx->xin->xcache) { | |
3877 | struct xc_entry *entry; | |
3878 | ||
3879 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_FIN_TIMEOUT); | |
83709dfa JR |
3880 | /* XC_RULE already holds a reference on the rule, none is taken |
3881 | * here. */ | |
b256dc52 JS |
3882 | entry->u.fin.rule = ctx->rule; |
3883 | entry->u.fin.idle = oft->fin_idle_timeout; | |
3884 | entry->u.fin.hard = oft->fin_hard_timeout; | |
b256dc52 | 3885 | } |
9583bc14 EJ |
3886 | } |
3887 | } | |
3888 | ||
3889 | static void | |
3890 | xlate_sample_action(struct xlate_ctx *ctx, | |
3891 | const struct ofpact_sample *os) | |
3892 | { | |
e824d78d JR |
3893 | /* Scale the probability from 16-bit to 32-bit while representing |
3894 | * the same percentage. */ | |
3895 | uint32_t probability = (os->probability << 16) | os->probability; | |
b440dd8c | 3896 | bool use_masked; |
e824d78d | 3897 | |
b440dd8c | 3898 | if (!ctx->xbridge->support.variable_length_userdata) { |
e824d78d JR |
3899 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); |
3900 | ||
3901 | VLOG_ERR_RL(&rl, "ignoring NXAST_SAMPLE action because datapath " | |
3902 | "lacks support (needs Linux 3.10+ or kernel module from " | |
3903 | "OVS 1.11+)"); | |
3904 | return; | |
3905 | } | |
3906 | ||
b440dd8c | 3907 | use_masked = ctx->xbridge->support.masked_set_action; |
e824d78d | 3908 | ctx->xout->slow |= commit_odp_actions(&ctx->xin->flow, &ctx->base_flow, |
1520ef4f | 3909 | ctx->odp_actions, |
49a73e0c | 3910 | ctx->wc, use_masked); |
e824d78d | 3911 | |
a6092018 BP |
3912 | union user_action_cookie cookie = { |
3913 | .flow_sample = { | |
3914 | .type = USER_ACTION_COOKIE_FLOW_SAMPLE, | |
3915 | .probability = os->probability, | |
3916 | .collector_set_id = os->collector_set_id, | |
3917 | .obs_domain_id = os->obs_domain_id, | |
3918 | .obs_point_id = os->obs_point_id, | |
3919 | } | |
3920 | }; | |
3921 | compose_sample_action(ctx, probability, &cookie, sizeof cookie.flow_sample, | |
3922 | ODPP_NONE, false); | |
9583bc14 EJ |
3923 | } |
3924 | ||
3925 | static bool | |
46c88433 | 3926 | may_receive(const struct xport *xport, struct xlate_ctx *ctx) |
9583bc14 | 3927 | { |
bbbca389 | 3928 | if (xport->config & (is_stp(&ctx->xin->flow) |
46c88433 EJ |
3929 | ? OFPUTIL_PC_NO_RECV_STP |
3930 | : OFPUTIL_PC_NO_RECV)) { | |
9583bc14 EJ |
3931 | return false; |
3932 | } | |
3933 | ||
3934 | /* Only drop packets here if both forwarding and learning are | |
3935 | * disabled. If just learning is enabled, we need to have | |
3936 | * OFPP_NORMAL and the learning action have a look at the packet | |
3937 | * before we can drop it. */ | |
9efd308e DV |
3938 | if ((!xport_stp_forward_state(xport) && !xport_stp_learn_state(xport)) || |
3939 | (!xport_rstp_forward_state(xport) && !xport_rstp_learn_state(xport))) { | |
9583bc14 EJ |
3940 | return false; |
3941 | } | |
3942 | ||
3943 | return true; | |
3944 | } | |
3945 | ||
7fdb60a7 SH |
3946 | static void |
3947 | xlate_write_actions(struct xlate_ctx *ctx, const struct ofpact *a) | |
3948 | { | |
c61f3870 BP |
3949 | const struct ofpact_nest *on = ofpact_get_WRITE_ACTIONS(a); |
3950 | size_t on_len = ofpact_nest_get_action_len(on); | |
3951 | const struct ofpact *inner; | |
3952 | ||
3953 | /* Maintain actset_output depending on the contents of the action set: | |
3954 | * | |
3955 | * - OFPP_UNSET, if there is no "output" action. | |
3956 | * | |
3957 | * - The output port, if there is an "output" action and no "group" | |
3958 | * action. | |
3959 | * | |
3960 | * - OFPP_UNSET, if there is a "group" action. | |
3961 | */ | |
3962 | if (!ctx->action_set_has_group) { | |
3963 | OFPACT_FOR_EACH (inner, on->actions, on_len) { | |
3964 | if (inner->type == OFPACT_OUTPUT) { | |
3965 | ctx->xin->flow.actset_output = ofpact_get_OUTPUT(inner)->port; | |
3966 | } else if (inner->type == OFPACT_GROUP) { | |
3967 | ctx->xin->flow.actset_output = OFPP_UNSET; | |
3968 | ctx->action_set_has_group = true; | |
9055ca9a | 3969 | break; |
c61f3870 BP |
3970 | } |
3971 | } | |
3972 | } | |
3973 | ||
3974 | ofpbuf_put(&ctx->action_set, on->actions, on_len); | |
7fdb60a7 SH |
3975 | ofpact_pad(&ctx->action_set); |
3976 | } | |
3977 | ||
3978 | static void | |
3979 | xlate_action_set(struct xlate_ctx *ctx) | |
3980 | { | |
3981 | uint64_t action_list_stub[1024 / 64]; | |
3982 | struct ofpbuf action_list; | |
3983 | ||
029ca940 | 3984 | ctx->in_action_set = true; |
7fdb60a7 SH |
3985 | ofpbuf_use_stub(&action_list, action_list_stub, sizeof action_list_stub); |
3986 | ofpacts_execute_action_set(&action_list, &ctx->action_set); | |
ed9c9e3e JR |
3987 | /* Clear the action set, as it is not needed any more. */ |
3988 | ofpbuf_clear(&ctx->action_set); | |
6fd6ed71 | 3989 | do_xlate_actions(action_list.data, action_list.size, ctx); |
029ca940 | 3990 | ctx->in_action_set = false; |
7fdb60a7 SH |
3991 | ofpbuf_uninit(&action_list); |
3992 | } | |
3993 | ||
e672ff9b JR |
3994 | static void |
3995 | recirc_put_unroll_xlate(struct xlate_ctx *ctx) | |
3996 | { | |
3997 | struct ofpact_unroll_xlate *unroll; | |
3998 | ||
3999 | unroll = ctx->last_unroll_offset < 0 | |
4000 | ? NULL | |
4001 | : ALIGNED_CAST(struct ofpact_unroll_xlate *, | |
4002 | (char *)ctx->action_set.data + ctx->last_unroll_offset); | |
4003 | ||
4004 | /* Restore the table_id and rule cookie for a potential PACKET | |
4005 | * IN if needed. */ | |
4006 | if (!unroll || | |
4007 | (ctx->table_id != unroll->rule_table_id | |
4008 | || ctx->rule_cookie != unroll->rule_cookie)) { | |
4009 | ||
4010 | ctx->last_unroll_offset = ctx->action_set.size; | |
4011 | unroll = ofpact_put_UNROLL_XLATE(&ctx->action_set); | |
4012 | unroll->rule_table_id = ctx->table_id; | |
4013 | unroll->rule_cookie = ctx->rule_cookie; | |
4014 | } | |
4015 | } | |
4016 | ||
4017 | ||
4018 | /* Copy remaining actions to the action_set to be executed after recirculation. | |
4019 | * UNROLL_XLATE action is inserted, if not already done so, before actions that | |
4020 | * may generate PACKET_INs from the current table and without matching another | |
4021 | * rule. */ | |
4022 | static void | |
4023 | recirc_unroll_actions(const struct ofpact *ofpacts, size_t ofpacts_len, | |
4024 | struct xlate_ctx *ctx) | |
4025 | { | |
4026 | const struct ofpact *a; | |
4027 | ||
4028 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
4029 | switch (a->type) { | |
4030 | /* May generate PACKET INs. */ | |
4031 | case OFPACT_OUTPUT_REG: | |
4032 | case OFPACT_GROUP: | |
4033 | case OFPACT_OUTPUT: | |
4034 | case OFPACT_CONTROLLER: | |
4035 | case OFPACT_DEC_MPLS_TTL: | |
4036 | case OFPACT_DEC_TTL: | |
4037 | recirc_put_unroll_xlate(ctx); | |
4038 | break; | |
4039 | ||
4040 | /* These may not generate PACKET INs. */ | |
4041 | case OFPACT_SET_TUNNEL: | |
4042 | case OFPACT_REG_MOVE: | |
4043 | case OFPACT_SET_FIELD: | |
4044 | case OFPACT_STACK_PUSH: | |
4045 | case OFPACT_STACK_POP: | |
4046 | case OFPACT_LEARN: | |
4047 | case OFPACT_WRITE_METADATA: | |
4048 | case OFPACT_RESUBMIT: /* May indirectly generate PACKET INs, */ | |
4049 | case OFPACT_GOTO_TABLE: /* but from a different table and rule. */ | |
4050 | case OFPACT_ENQUEUE: | |
4051 | case OFPACT_SET_VLAN_VID: | |
4052 | case OFPACT_SET_VLAN_PCP: | |
4053 | case OFPACT_STRIP_VLAN: | |
4054 | case OFPACT_PUSH_VLAN: | |
4055 | case OFPACT_SET_ETH_SRC: | |
4056 | case OFPACT_SET_ETH_DST: | |
4057 | case OFPACT_SET_IPV4_SRC: | |
4058 | case OFPACT_SET_IPV4_DST: | |
4059 | case OFPACT_SET_IP_DSCP: | |
4060 | case OFPACT_SET_IP_ECN: | |
4061 | case OFPACT_SET_IP_TTL: | |
4062 | case OFPACT_SET_L4_SRC_PORT: | |
4063 | case OFPACT_SET_L4_DST_PORT: | |
4064 | case OFPACT_SET_QUEUE: | |
4065 | case OFPACT_POP_QUEUE: | |
4066 | case OFPACT_PUSH_MPLS: | |
4067 | case OFPACT_POP_MPLS: | |
4068 | case OFPACT_SET_MPLS_LABEL: | |
4069 | case OFPACT_SET_MPLS_TC: | |
4070 | case OFPACT_SET_MPLS_TTL: | |
4071 | case OFPACT_MULTIPATH: | |
4072 | case OFPACT_BUNDLE: | |
4073 | case OFPACT_EXIT: | |
4074 | case OFPACT_UNROLL_XLATE: | |
4075 | case OFPACT_FIN_TIMEOUT: | |
4076 | case OFPACT_CLEAR_ACTIONS: | |
4077 | case OFPACT_WRITE_ACTIONS: | |
4078 | case OFPACT_METER: | |
4079 | case OFPACT_SAMPLE: | |
4080 | break; | |
4081 | ||
4082 | /* These need not be copied for restoration. */ | |
4083 | case OFPACT_NOTE: | |
4084 | case OFPACT_CONJUNCTION: | |
4085 | continue; | |
4086 | } | |
4087 | /* Copy the action over. */ | |
4088 | ofpbuf_put(&ctx->action_set, a, OFPACT_ALIGN(a->len)); | |
4089 | } | |
4090 | } | |
4091 | ||
1d741d6d JR |
4092 | #define CHECK_MPLS_RECIRCULATION() \ |
4093 | if (ctx->was_mpls) { \ | |
4094 | ctx_trigger_recirculation(ctx); \ | |
4095 | break; \ | |
4096 | } | |
4097 | #define CHECK_MPLS_RECIRCULATION_IF(COND) \ | |
4098 | if (COND) { \ | |
4099 | CHECK_MPLS_RECIRCULATION(); \ | |
4100 | } | |
4101 | ||
9583bc14 EJ |
4102 | static void |
4103 | do_xlate_actions(const struct ofpact *ofpacts, size_t ofpacts_len, | |
4104 | struct xlate_ctx *ctx) | |
4105 | { | |
49a73e0c | 4106 | struct flow_wildcards *wc = ctx->wc; |
33bf9176 | 4107 | struct flow *flow = &ctx->xin->flow; |
9583bc14 EJ |
4108 | const struct ofpact *a; |
4109 | ||
a36de779 PS |
4110 | if (ovs_native_tunneling_is_on(ctx->xbridge->ofproto)) { |
4111 | tnl_arp_snoop(flow, wc, ctx->xbridge->name); | |
4112 | } | |
f47ea021 JR |
4113 | /* dl_type already in the mask, not set below. */ |
4114 | ||
9583bc14 EJ |
4115 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { |
4116 | struct ofpact_controller *controller; | |
4117 | const struct ofpact_metadata *metadata; | |
b2dd70be JR |
4118 | const struct ofpact_set_field *set_field; |
4119 | const struct mf_field *mf; | |
9583bc14 | 4120 | |
e672ff9b JR |
4121 | if (ctx->exit) { |
4122 | /* Check if need to store the remaining actions for later | |
4123 | * execution. */ | |
4124 | if (exit_recirculates(ctx)) { | |
4125 | recirc_unroll_actions(a, OFPACT_ALIGN(ofpacts_len - | |
4126 | ((uint8_t *)a - | |
4127 | (uint8_t *)ofpacts)), | |
4128 | ctx); | |
4129 | } | |
4130 | break; | |
7bbdd84f SH |
4131 | } |
4132 | ||
9583bc14 EJ |
4133 | switch (a->type) { |
4134 | case OFPACT_OUTPUT: | |
4135 | xlate_output_action(ctx, ofpact_get_OUTPUT(a)->port, | |
4136 | ofpact_get_OUTPUT(a)->max_len, true); | |
4137 | break; | |
4138 | ||
7395c052 | 4139 | case OFPACT_GROUP: |
f4fb341b | 4140 | if (xlate_group_action(ctx, ofpact_get_GROUP(a)->group_id)) { |
1d741d6d | 4141 | /* Group could not be found. */ |
f4fb341b SH |
4142 | return; |
4143 | } | |
7395c052 NZ |
4144 | break; |
4145 | ||
9583bc14 EJ |
4146 | case OFPACT_CONTROLLER: |
4147 | controller = ofpact_get_CONTROLLER(a); | |
4148 | execute_controller_action(ctx, controller->max_len, | |
4149 | controller->reason, | |
4150 | controller->controller_id); | |
4151 | break; | |
4152 | ||
4153 | case OFPACT_ENQUEUE: | |
16194afd DDP |
4154 | memset(&wc->masks.skb_priority, 0xff, |
4155 | sizeof wc->masks.skb_priority); | |
9583bc14 EJ |
4156 | xlate_enqueue_action(ctx, ofpact_get_ENQUEUE(a)); |
4157 | break; | |
4158 | ||
4159 | case OFPACT_SET_VLAN_VID: | |
f74e7df7 | 4160 | wc->masks.vlan_tci |= htons(VLAN_VID_MASK | VLAN_CFI); |
ca287d20 JR |
4161 | if (flow->vlan_tci & htons(VLAN_CFI) || |
4162 | ofpact_get_SET_VLAN_VID(a)->push_vlan_if_needed) { | |
4163 | flow->vlan_tci &= ~htons(VLAN_VID_MASK); | |
4164 | flow->vlan_tci |= (htons(ofpact_get_SET_VLAN_VID(a)->vlan_vid) | |
4165 | | htons(VLAN_CFI)); | |
4166 | } | |
9583bc14 EJ |
4167 | break; |
4168 | ||
4169 | case OFPACT_SET_VLAN_PCP: | |
f74e7df7 | 4170 | wc->masks.vlan_tci |= htons(VLAN_PCP_MASK | VLAN_CFI); |
ca287d20 JR |
4171 | if (flow->vlan_tci & htons(VLAN_CFI) || |
4172 | ofpact_get_SET_VLAN_PCP(a)->push_vlan_if_needed) { | |
4173 | flow->vlan_tci &= ~htons(VLAN_PCP_MASK); | |
4174 | flow->vlan_tci |= htons((ofpact_get_SET_VLAN_PCP(a)->vlan_pcp | |
4175 | << VLAN_PCP_SHIFT) | VLAN_CFI); | |
4176 | } | |
9583bc14 EJ |
4177 | break; |
4178 | ||
4179 | case OFPACT_STRIP_VLAN: | |
f74e7df7 | 4180 | memset(&wc->masks.vlan_tci, 0xff, sizeof wc->masks.vlan_tci); |
33bf9176 | 4181 | flow->vlan_tci = htons(0); |
9583bc14 EJ |
4182 | break; |
4183 | ||
4184 | case OFPACT_PUSH_VLAN: | |
4185 | /* XXX 802.1AD(QinQ) */ | |
f74e7df7 | 4186 | memset(&wc->masks.vlan_tci, 0xff, sizeof wc->masks.vlan_tci); |
33bf9176 | 4187 | flow->vlan_tci = htons(VLAN_CFI); |
9583bc14 EJ |
4188 | break; |
4189 | ||
4190 | case OFPACT_SET_ETH_SRC: | |
f74e7df7 | 4191 | memset(&wc->masks.dl_src, 0xff, sizeof wc->masks.dl_src); |
33bf9176 | 4192 | memcpy(flow->dl_src, ofpact_get_SET_ETH_SRC(a)->mac, ETH_ADDR_LEN); |
9583bc14 EJ |
4193 | break; |
4194 | ||
4195 | case OFPACT_SET_ETH_DST: | |
f74e7df7 | 4196 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); |
33bf9176 | 4197 | memcpy(flow->dl_dst, ofpact_get_SET_ETH_DST(a)->mac, ETH_ADDR_LEN); |
9583bc14 EJ |
4198 | break; |
4199 | ||
4200 | case OFPACT_SET_IPV4_SRC: | |
1d741d6d | 4201 | CHECK_MPLS_RECIRCULATION(); |
33bf9176 | 4202 | if (flow->dl_type == htons(ETH_TYPE_IP)) { |
f47ea021 | 4203 | memset(&wc->masks.nw_src, 0xff, sizeof wc->masks.nw_src); |
33bf9176 | 4204 | flow->nw_src = ofpact_get_SET_IPV4_SRC(a)->ipv4; |
9583bc14 EJ |
4205 | } |
4206 | break; | |
4207 | ||
4208 | case OFPACT_SET_IPV4_DST: | |
1d741d6d | 4209 | CHECK_MPLS_RECIRCULATION(); |
33bf9176 | 4210 | if (flow->dl_type == htons(ETH_TYPE_IP)) { |
f47ea021 | 4211 | memset(&wc->masks.nw_dst, 0xff, sizeof wc->masks.nw_dst); |
33bf9176 | 4212 | flow->nw_dst = ofpact_get_SET_IPV4_DST(a)->ipv4; |
9583bc14 EJ |
4213 | } |
4214 | break; | |
4215 | ||
04f01c24 | 4216 | case OFPACT_SET_IP_DSCP: |
1d741d6d | 4217 | CHECK_MPLS_RECIRCULATION(); |
04f01c24 | 4218 | if (is_ip_any(flow)) { |
f47ea021 | 4219 | wc->masks.nw_tos |= IP_DSCP_MASK; |
33bf9176 | 4220 | flow->nw_tos &= ~IP_DSCP_MASK; |
04f01c24 | 4221 | flow->nw_tos |= ofpact_get_SET_IP_DSCP(a)->dscp; |
9583bc14 EJ |
4222 | } |
4223 | break; | |
4224 | ||
ff14eb7a | 4225 | case OFPACT_SET_IP_ECN: |
1d741d6d | 4226 | CHECK_MPLS_RECIRCULATION(); |
ff14eb7a JR |
4227 | if (is_ip_any(flow)) { |
4228 | wc->masks.nw_tos |= IP_ECN_MASK; | |
4229 | flow->nw_tos &= ~IP_ECN_MASK; | |
4230 | flow->nw_tos |= ofpact_get_SET_IP_ECN(a)->ecn; | |
4231 | } | |
4232 | break; | |
4233 | ||
0c20dbe4 | 4234 | case OFPACT_SET_IP_TTL: |
1d741d6d | 4235 | CHECK_MPLS_RECIRCULATION(); |
0c20dbe4 JR |
4236 | if (is_ip_any(flow)) { |
4237 | wc->masks.nw_ttl = 0xff; | |
4238 | flow->nw_ttl = ofpact_get_SET_IP_TTL(a)->ttl; | |
4239 | } | |
4240 | break; | |
4241 | ||
9583bc14 | 4242 | case OFPACT_SET_L4_SRC_PORT: |
1d741d6d | 4243 | CHECK_MPLS_RECIRCULATION(); |
b8778a0d | 4244 | if (is_ip_any(flow) && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) { |
f47ea021 JR |
4245 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); |
4246 | memset(&wc->masks.tp_src, 0xff, sizeof wc->masks.tp_src); | |
33bf9176 | 4247 | flow->tp_src = htons(ofpact_get_SET_L4_SRC_PORT(a)->port); |
9583bc14 EJ |
4248 | } |
4249 | break; | |
4250 | ||
4251 | case OFPACT_SET_L4_DST_PORT: | |
1d741d6d | 4252 | CHECK_MPLS_RECIRCULATION(); |
b8778a0d | 4253 | if (is_ip_any(flow) && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) { |
f47ea021 JR |
4254 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); |
4255 | memset(&wc->masks.tp_dst, 0xff, sizeof wc->masks.tp_dst); | |
33bf9176 | 4256 | flow->tp_dst = htons(ofpact_get_SET_L4_DST_PORT(a)->port); |
9583bc14 EJ |
4257 | } |
4258 | break; | |
4259 | ||
4260 | case OFPACT_RESUBMIT: | |
4261 | xlate_ofpact_resubmit(ctx, ofpact_get_RESUBMIT(a)); | |
4262 | break; | |
4263 | ||
4264 | case OFPACT_SET_TUNNEL: | |
33bf9176 | 4265 | flow->tunnel.tun_id = htonll(ofpact_get_SET_TUNNEL(a)->tun_id); |
9583bc14 EJ |
4266 | break; |
4267 | ||
4268 | case OFPACT_SET_QUEUE: | |
16194afd DDP |
4269 | memset(&wc->masks.skb_priority, 0xff, |
4270 | sizeof wc->masks.skb_priority); | |
9583bc14 EJ |
4271 | xlate_set_queue_action(ctx, ofpact_get_SET_QUEUE(a)->queue_id); |
4272 | break; | |
4273 | ||
4274 | case OFPACT_POP_QUEUE: | |
16194afd DDP |
4275 | memset(&wc->masks.skb_priority, 0xff, |
4276 | sizeof wc->masks.skb_priority); | |
33bf9176 | 4277 | flow->skb_priority = ctx->orig_skb_priority; |
9583bc14 EJ |
4278 | break; |
4279 | ||
4280 | case OFPACT_REG_MOVE: | |
1d741d6d JR |
4281 | CHECK_MPLS_RECIRCULATION_IF( |
4282 | mf_is_l3_or_higher(ofpact_get_REG_MOVE(a)->dst.field) || | |
4283 | mf_is_l3_or_higher(ofpact_get_REG_MOVE(a)->src.field)); | |
33bf9176 | 4284 | nxm_execute_reg_move(ofpact_get_REG_MOVE(a), flow, wc); |
9583bc14 EJ |
4285 | break; |
4286 | ||
b2dd70be | 4287 | case OFPACT_SET_FIELD: |
1d741d6d JR |
4288 | CHECK_MPLS_RECIRCULATION_IF( |
4289 | mf_is_l3_or_higher(ofpact_get_SET_FIELD(a)->field)); | |
b2dd70be JR |
4290 | set_field = ofpact_get_SET_FIELD(a); |
4291 | mf = set_field->field; | |
b2dd70be JR |
4292 | |
4293 | /* Set field action only ever overwrites packet's outermost | |
4294 | * applicable header fields. Do nothing if no header exists. */ | |
4479846e JR |
4295 | if (mf->id == MFF_VLAN_VID) { |
4296 | wc->masks.vlan_tci |= htons(VLAN_CFI); | |
4297 | if (!(flow->vlan_tci & htons(VLAN_CFI))) { | |
4298 | break; | |
4299 | } | |
4300 | } else if ((mf->id == MFF_MPLS_LABEL || mf->id == MFF_MPLS_TC) | |
4301 | /* 'dl_type' is already unwildcarded. */ | |
4302 | && !eth_type_mpls(flow->dl_type)) { | |
4303 | break; | |
b2dd70be | 4304 | } |
b8778a0d JR |
4305 | /* A flow may wildcard nw_frag. Do nothing if setting a trasport |
4306 | * header field on a packet that does not have them. */ | |
4479846e | 4307 | mf_mask_field_and_prereqs(mf, &wc->masks); |
b8778a0d JR |
4308 | if (mf_are_prereqs_ok(mf, flow)) { |
4309 | mf_set_flow_value_masked(mf, &set_field->value, | |
4310 | &set_field->mask, flow); | |
4311 | } | |
b2dd70be JR |
4312 | break; |
4313 | ||
9583bc14 | 4314 | case OFPACT_STACK_PUSH: |
1d741d6d JR |
4315 | CHECK_MPLS_RECIRCULATION_IF( |
4316 | mf_is_l3_or_higher(ofpact_get_STACK_PUSH(a)->subfield.field)); | |
33bf9176 BP |
4317 | nxm_execute_stack_push(ofpact_get_STACK_PUSH(a), flow, wc, |
4318 | &ctx->stack); | |
9583bc14 EJ |
4319 | break; |
4320 | ||
4321 | case OFPACT_STACK_POP: | |
1d741d6d JR |
4322 | CHECK_MPLS_RECIRCULATION_IF( |
4323 | mf_is_l3_or_higher(ofpact_get_STACK_POP(a)->subfield.field)); | |
f74e7df7 JP |
4324 | nxm_execute_stack_pop(ofpact_get_STACK_POP(a), flow, wc, |
4325 | &ctx->stack); | |
9583bc14 EJ |
4326 | break; |
4327 | ||
4328 | case OFPACT_PUSH_MPLS: | |
1d741d6d JR |
4329 | /* Recirculate if it is an IP packet with a zero ttl. This may |
4330 | * indicate that the packet was previously MPLS and an MPLS pop | |
4331 | * action converted it to IP. In this case recirculating should | |
4332 | * reveal the IP TTL which is used as the basis for a new MPLS | |
4333 | * LSE. */ | |
4334 | CHECK_MPLS_RECIRCULATION_IF( | |
4335 | !flow_count_mpls_labels(flow, wc) | |
4336 | && flow->nw_ttl == 0 | |
4337 | && is_ip_any(flow)); | |
8bfd0fda | 4338 | compose_mpls_push_action(ctx, ofpact_get_PUSH_MPLS(a)); |
9583bc14 EJ |
4339 | break; |
4340 | ||
4341 | case OFPACT_POP_MPLS: | |
1d741d6d | 4342 | CHECK_MPLS_RECIRCULATION(); |
8bfd0fda | 4343 | compose_mpls_pop_action(ctx, ofpact_get_POP_MPLS(a)->ethertype); |
9583bc14 EJ |
4344 | break; |
4345 | ||
097d4939 | 4346 | case OFPACT_SET_MPLS_LABEL: |
1d741d6d | 4347 | CHECK_MPLS_RECIRCULATION(); |
8bfd0fda BP |
4348 | compose_set_mpls_label_action( |
4349 | ctx, ofpact_get_SET_MPLS_LABEL(a)->label); | |
1d741d6d | 4350 | break; |
097d4939 JR |
4351 | |
4352 | case OFPACT_SET_MPLS_TC: | |
1d741d6d | 4353 | CHECK_MPLS_RECIRCULATION(); |
8bfd0fda | 4354 | compose_set_mpls_tc_action(ctx, ofpact_get_SET_MPLS_TC(a)->tc); |
097d4939 JR |
4355 | break; |
4356 | ||
9583bc14 | 4357 | case OFPACT_SET_MPLS_TTL: |
1d741d6d | 4358 | CHECK_MPLS_RECIRCULATION(); |
8bfd0fda | 4359 | compose_set_mpls_ttl_action(ctx, ofpact_get_SET_MPLS_TTL(a)->ttl); |
9583bc14 EJ |
4360 | break; |
4361 | ||
4362 | case OFPACT_DEC_MPLS_TTL: | |
1d741d6d | 4363 | CHECK_MPLS_RECIRCULATION(); |
9cfef3d0 | 4364 | if (compose_dec_mpls_ttl_action(ctx)) { |
ad3efdcb | 4365 | return; |
9583bc14 EJ |
4366 | } |
4367 | break; | |
4368 | ||
4369 | case OFPACT_DEC_TTL: | |
1d741d6d | 4370 | CHECK_MPLS_RECIRCULATION(); |
f74e7df7 | 4371 | wc->masks.nw_ttl = 0xff; |
9583bc14 | 4372 | if (compose_dec_ttl(ctx, ofpact_get_DEC_TTL(a))) { |
ad3efdcb | 4373 | return; |
9583bc14 EJ |
4374 | } |
4375 | break; | |
4376 | ||
4377 | case OFPACT_NOTE: | |
4378 | /* Nothing to do. */ | |
4379 | break; | |
4380 | ||
4381 | case OFPACT_MULTIPATH: | |
1d741d6d | 4382 | CHECK_MPLS_RECIRCULATION(); |
33bf9176 | 4383 | multipath_execute(ofpact_get_MULTIPATH(a), flow, wc); |
9583bc14 EJ |
4384 | break; |
4385 | ||
4386 | case OFPACT_BUNDLE: | |
1d741d6d | 4387 | CHECK_MPLS_RECIRCULATION(); |
9583bc14 EJ |
4388 | xlate_bundle_action(ctx, ofpact_get_BUNDLE(a)); |
4389 | break; | |
4390 | ||
4391 | case OFPACT_OUTPUT_REG: | |
4392 | xlate_output_reg_action(ctx, ofpact_get_OUTPUT_REG(a)); | |
4393 | break; | |
4394 | ||
4395 | case OFPACT_LEARN: | |
1d741d6d | 4396 | CHECK_MPLS_RECIRCULATION(); |
9583bc14 EJ |
4397 | xlate_learn_action(ctx, ofpact_get_LEARN(a)); |
4398 | break; | |
4399 | ||
afc3987b BP |
4400 | case OFPACT_CONJUNCTION: { |
4401 | /* A flow with a "conjunction" action represents part of a special | |
4402 | * kind of "set membership match". Such a flow should not actually | |
4403 | * get executed, but it could via, say, a "packet-out", even though | |
4404 | * that wouldn't be useful. Log it to help debugging. */ | |
4405 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); | |
4406 | VLOG_INFO_RL(&rl, "executing no-op conjunction action"); | |
18080541 | 4407 | break; |
afc3987b | 4408 | } |
18080541 | 4409 | |
9583bc14 EJ |
4410 | case OFPACT_EXIT: |
4411 | ctx->exit = true; | |
4412 | break; | |
4413 | ||
e672ff9b JR |
4414 | case OFPACT_UNROLL_XLATE: { |
4415 | struct ofpact_unroll_xlate *unroll = ofpact_get_UNROLL_XLATE(a); | |
4416 | ||
4417 | /* Restore translation context data that was stored earlier. */ | |
4418 | ctx->table_id = unroll->rule_table_id; | |
4419 | ctx->rule_cookie = unroll->rule_cookie; | |
4420 | break; | |
4421 | } | |
9583bc14 | 4422 | case OFPACT_FIN_TIMEOUT: |
1d741d6d | 4423 | CHECK_MPLS_RECIRCULATION(); |
33bf9176 | 4424 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); |
9583bc14 EJ |
4425 | ctx->xout->has_fin_timeout = true; |
4426 | xlate_fin_timeout(ctx, ofpact_get_FIN_TIMEOUT(a)); | |
4427 | break; | |
4428 | ||
4429 | case OFPACT_CLEAR_ACTIONS: | |
7fdb60a7 | 4430 | ofpbuf_clear(&ctx->action_set); |
c61f3870 BP |
4431 | ctx->xin->flow.actset_output = OFPP_UNSET; |
4432 | ctx->action_set_has_group = false; | |
7fdb60a7 SH |
4433 | break; |
4434 | ||
4435 | case OFPACT_WRITE_ACTIONS: | |
4436 | xlate_write_actions(ctx, a); | |
9583bc14 EJ |
4437 | break; |
4438 | ||
4439 | case OFPACT_WRITE_METADATA: | |
4440 | metadata = ofpact_get_WRITE_METADATA(a); | |
33bf9176 BP |
4441 | flow->metadata &= ~metadata->mask; |
4442 | flow->metadata |= metadata->metadata & metadata->mask; | |
9583bc14 EJ |
4443 | break; |
4444 | ||
638a19b0 JR |
4445 | case OFPACT_METER: |
4446 | /* Not implemented yet. */ | |
4447 | break; | |
4448 | ||
9583bc14 | 4449 | case OFPACT_GOTO_TABLE: { |
9583bc14 | 4450 | struct ofpact_goto_table *ogt = ofpact_get_GOTO_TABLE(a); |
9583bc14 | 4451 | |
7bbdd84f SH |
4452 | /* Allow ctx->table_id == TBL_INTERNAL, which will be greater |
4453 | * than ogt->table_id. This is to allow goto_table actions that | |
4454 | * triggered recirculation: ctx->table_id will be TBL_INTERNAL | |
4455 | * after recirculation. */ | |
4456 | ovs_assert(ctx->table_id == TBL_INTERNAL | |
4457 | || ctx->table_id < ogt->table_id); | |
4468099e | 4458 | xlate_table_action(ctx, ctx->xin->flow.in_port.ofp_port, |
6d328fa2 | 4459 | ogt->table_id, true, true); |
9583bc14 EJ |
4460 | break; |
4461 | } | |
4462 | ||
4463 | case OFPACT_SAMPLE: | |
4464 | xlate_sample_action(ctx, ofpact_get_SAMPLE(a)); | |
4465 | break; | |
4466 | } | |
1d741d6d JR |
4467 | |
4468 | /* Check if need to store this and the remaining actions for later | |
4469 | * execution. */ | |
4470 | if (ctx->exit && ctx_first_recirculation_action(ctx)) { | |
4471 | recirc_unroll_actions(a, OFPACT_ALIGN(ofpacts_len - | |
4472 | ((uint8_t *)a - | |
4473 | (uint8_t *)ofpacts)), | |
4474 | ctx); | |
4475 | break; | |
4476 | } | |
9583bc14 | 4477 | } |
9583bc14 EJ |
4478 | } |
4479 | ||
4480 | void | |
4481 | xlate_in_init(struct xlate_in *xin, struct ofproto_dpif *ofproto, | |
cc377352 EJ |
4482 | const struct flow *flow, ofp_port_t in_port, |
4483 | struct rule_dpif *rule, uint16_t tcp_flags, | |
1520ef4f BP |
4484 | const struct dp_packet *packet, struct flow_wildcards *wc, |
4485 | struct ofpbuf *odp_actions) | |
9583bc14 EJ |
4486 | { |
4487 | xin->ofproto = ofproto; | |
4488 | xin->flow = *flow; | |
cc377352 | 4489 | xin->flow.in_port.ofp_port = in_port; |
c61f3870 | 4490 | xin->flow.actset_output = OFPP_UNSET; |
9583bc14 EJ |
4491 | xin->packet = packet; |
4492 | xin->may_learn = packet != NULL; | |
4493 | xin->rule = rule; | |
b256dc52 | 4494 | xin->xcache = NULL; |
9583bc14 EJ |
4495 | xin->ofpacts = NULL; |
4496 | xin->ofpacts_len = 0; | |
4497 | xin->tcp_flags = tcp_flags; | |
4498 | xin->resubmit_hook = NULL; | |
4499 | xin->report_hook = NULL; | |
4500 | xin->resubmit_stats = NULL; | |
49a73e0c | 4501 | xin->wc = wc; |
1520ef4f | 4502 | xin->odp_actions = odp_actions; |
e672ff9b JR |
4503 | |
4504 | /* Do recirc lookup. */ | |
4505 | xin->recirc = flow->recirc_id | |
4506 | ? recirc_id_node_find(flow->recirc_id) | |
4507 | : NULL; | |
9583bc14 EJ |
4508 | } |
4509 | ||
4510 | void | |
4511 | xlate_out_uninit(struct xlate_out *xout) | |
4512 | { | |
e672ff9b | 4513 | if (xout) { |
e672ff9b | 4514 | xlate_out_free_recircs(xout); |
9583bc14 EJ |
4515 | } |
4516 | } | |
4517 | ||
4518 | /* Translates the 'ofpacts_len' bytes of "struct ofpact"s starting at 'ofpacts' | |
4519 | * into datapath actions, using 'ctx', and discards the datapath actions. */ | |
4520 | void | |
4521 | xlate_actions_for_side_effects(struct xlate_in *xin) | |
4522 | { | |
4523 | struct xlate_out xout; | |
4524 | ||
4525 | xlate_actions(xin, &xout); | |
4526 | xlate_out_uninit(&xout); | |
4527 | } | |
9583bc14 | 4528 | \f |
55954f6e EJ |
4529 | static struct skb_priority_to_dscp * |
4530 | get_skb_priority(const struct xport *xport, uint32_t skb_priority) | |
4531 | { | |
4532 | struct skb_priority_to_dscp *pdscp; | |
4533 | uint32_t hash; | |
4534 | ||
4535 | hash = hash_int(skb_priority, 0); | |
4536 | HMAP_FOR_EACH_IN_BUCKET (pdscp, hmap_node, hash, &xport->skb_priorities) { | |
4537 | if (pdscp->skb_priority == skb_priority) { | |
4538 | return pdscp; | |
4539 | } | |
4540 | } | |
4541 | return NULL; | |
4542 | } | |
4543 | ||
4544 | static bool | |
4545 | dscp_from_skb_priority(const struct xport *xport, uint32_t skb_priority, | |
4546 | uint8_t *dscp) | |
4547 | { | |
4548 | struct skb_priority_to_dscp *pdscp = get_skb_priority(xport, skb_priority); | |
4549 | *dscp = pdscp ? pdscp->dscp : 0; | |
4550 | return pdscp != NULL; | |
4551 | } | |
4552 | ||
16194afd DDP |
4553 | static size_t |
4554 | count_skb_priorities(const struct xport *xport) | |
4555 | { | |
4556 | return hmap_count(&xport->skb_priorities); | |
4557 | } | |
4558 | ||
55954f6e EJ |
4559 | static void |
4560 | clear_skb_priorities(struct xport *xport) | |
4561 | { | |
4562 | struct skb_priority_to_dscp *pdscp, *next; | |
4563 | ||
4564 | HMAP_FOR_EACH_SAFE (pdscp, next, hmap_node, &xport->skb_priorities) { | |
4565 | hmap_remove(&xport->skb_priorities, &pdscp->hmap_node); | |
4566 | free(pdscp); | |
4567 | } | |
4568 | } | |
4569 | ||
ce4a6b76 BP |
4570 | static bool |
4571 | actions_output_to_local_port(const struct xlate_ctx *ctx) | |
4572 | { | |
46c88433 | 4573 | odp_port_t local_odp_port = ofp_port_to_odp_port(ctx->xbridge, OFPP_LOCAL); |
ce4a6b76 BP |
4574 | const struct nlattr *a; |
4575 | unsigned int left; | |
4576 | ||
1520ef4f BP |
4577 | NL_ATTR_FOR_EACH_UNSAFE (a, left, ctx->odp_actions->data, |
4578 | ctx->odp_actions->size) { | |
ce4a6b76 BP |
4579 | if (nl_attr_type(a) == OVS_ACTION_ATTR_OUTPUT |
4580 | && nl_attr_get_odp_port(a) == local_odp_port) { | |
4581 | return true; | |
4582 | } | |
4583 | } | |
4584 | return false; | |
4585 | } | |
9583bc14 | 4586 | |
5e2a6702 | 4587 | #if defined(__linux__) |
7d031d7e BP |
4588 | /* Returns the maximum number of packets that the Linux kernel is willing to |
4589 | * queue up internally to certain kinds of software-implemented ports, or the | |
4590 | * default (and rarely modified) value if it cannot be determined. */ | |
4591 | static int | |
4592 | netdev_max_backlog(void) | |
4593 | { | |
4594 | static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER; | |
4595 | static int max_backlog = 1000; /* The normal default value. */ | |
4596 | ||
4597 | if (ovsthread_once_start(&once)) { | |
4598 | static const char filename[] = "/proc/sys/net/core/netdev_max_backlog"; | |
4599 | FILE *stream; | |
4600 | int n; | |
4601 | ||
4602 | stream = fopen(filename, "r"); | |
4603 | if (!stream) { | |
4604 | VLOG_WARN("%s: open failed (%s)", filename, ovs_strerror(errno)); | |
4605 | } else { | |
4606 | if (fscanf(stream, "%d", &n) != 1) { | |
4607 | VLOG_WARN("%s: read error", filename); | |
4608 | } else if (n <= 100) { | |
4609 | VLOG_WARN("%s: unexpectedly small value %d", filename, n); | |
4610 | } else { | |
4611 | max_backlog = n; | |
4612 | } | |
4613 | fclose(stream); | |
4614 | } | |
4615 | ovsthread_once_done(&once); | |
4616 | ||
4617 | VLOG_DBG("%s: using %d max_backlog", filename, max_backlog); | |
4618 | } | |
4619 | ||
4620 | return max_backlog; | |
4621 | } | |
4622 | ||
4623 | /* Counts and returns the number of OVS_ACTION_ATTR_OUTPUT actions in | |
4624 | * 'odp_actions'. */ | |
4625 | static int | |
4626 | count_output_actions(const struct ofpbuf *odp_actions) | |
4627 | { | |
4628 | const struct nlattr *a; | |
4629 | size_t left; | |
4630 | int n = 0; | |
4631 | ||
6fd6ed71 | 4632 | NL_ATTR_FOR_EACH_UNSAFE (a, left, odp_actions->data, odp_actions->size) { |
7d031d7e BP |
4633 | if (a->nla_type == OVS_ACTION_ATTR_OUTPUT) { |
4634 | n++; | |
4635 | } | |
4636 | } | |
4637 | return n; | |
4638 | } | |
5e2a6702 | 4639 | #endif /* defined(__linux__) */ |
7d031d7e BP |
4640 | |
4641 | /* Returns true if 'odp_actions' contains more output actions than the datapath | |
4642 | * can reliably handle in one go. On Linux, this is the value of the | |
4643 | * net.core.netdev_max_backlog sysctl, which limits the maximum number of | |
4644 | * packets that the kernel is willing to queue up for processing while the | |
4645 | * datapath is processing a set of actions. */ | |
4646 | static bool | |
5e2a6702 | 4647 | too_many_output_actions(const struct ofpbuf *odp_actions OVS_UNUSED) |
7d031d7e BP |
4648 | { |
4649 | #ifdef __linux__ | |
6fd6ed71 | 4650 | return (odp_actions->size / NL_A_U32_SIZE > netdev_max_backlog() |
7d031d7e BP |
4651 | && count_output_actions(odp_actions) > netdev_max_backlog()); |
4652 | #else | |
4653 | /* OSes other than Linux might have similar limits, but we don't know how | |
4654 | * to determine them.*/ | |
4655 | return false; | |
4656 | #endif | |
4657 | } | |
4658 | ||
234c3da9 BP |
4659 | static void |
4660 | xlate_wc_init(struct xlate_ctx *ctx) | |
4661 | { | |
4662 | flow_wildcards_init_catchall(ctx->wc); | |
4663 | ||
4664 | /* Some fields we consider to always be examined. */ | |
4665 | memset(&ctx->wc->masks.in_port, 0xff, sizeof ctx->wc->masks.in_port); | |
4666 | memset(&ctx->wc->masks.dl_type, 0xff, sizeof ctx->wc->masks.dl_type); | |
4667 | if (is_ip_any(&ctx->xin->flow)) { | |
4668 | ctx->wc->masks.nw_frag |= FLOW_NW_FRAG_MASK; | |
4669 | } | |
4670 | ||
4671 | if (ctx->xbridge->support.odp.recirc) { | |
4672 | /* Always exactly match recirc_id when datapath supports | |
4673 | * recirculation. */ | |
4674 | ctx->wc->masks.recirc_id = UINT32_MAX; | |
4675 | } | |
4676 | ||
4677 | if (ctx->xbridge->netflow) { | |
4678 | netflow_mask_wc(&ctx->xin->flow, ctx->wc); | |
4679 | } | |
4680 | ||
4681 | tnl_wc_init(&ctx->xin->flow, ctx->wc); | |
4682 | } | |
4683 | ||
4684 | static void | |
4685 | xlate_wc_finish(struct xlate_ctx *ctx) | |
4686 | { | |
4687 | /* Clear the metadata and register wildcard masks, because we won't | |
4688 | * use non-header fields as part of the cache. */ | |
4689 | flow_wildcards_clear_non_packet_fields(ctx->wc); | |
4690 | ||
4691 | /* ICMPv4 and ICMPv6 have 8-bit "type" and "code" fields. struct flow | |
4692 | * uses the low 8 bits of the 16-bit tp_src and tp_dst members to | |
4693 | * represent these fields. The datapath interface, on the other hand, | |
4694 | * represents them with just 8 bits each. This means that if the high | |
4695 | * 8 bits of the masks for these fields somehow become set, then they | |
4696 | * will get chopped off by a round trip through the datapath, and | |
4697 | * revalidation will spot that as an inconsistency and delete the flow. | |
4698 | * Avoid the problem here by making sure that only the low 8 bits of | |
4699 | * either field can be unwildcarded for ICMP. | |
4700 | */ | |
4701 | if (is_icmpv4(&ctx->xin->flow) || is_icmpv6(&ctx->xin->flow)) { | |
4702 | ctx->wc->masks.tp_src &= htons(UINT8_MAX); | |
4703 | ctx->wc->masks.tp_dst &= htons(UINT8_MAX); | |
4704 | } | |
4705 | /* VLAN_TCI CFI bit must be matched if any of the TCI is matched. */ | |
4706 | if (ctx->wc->masks.vlan_tci) { | |
4707 | ctx->wc->masks.vlan_tci |= htons(VLAN_CFI); | |
4708 | } | |
4709 | } | |
4710 | ||
e672ff9b JR |
4711 | /* Translates the flow, actions, or rule in 'xin' into datapath actions in |
4712 | * 'xout'. | |
56450a41 BP |
4713 | * The caller must take responsibility for eventually freeing 'xout', with |
4714 | * xlate_out_uninit(). */ | |
84f0f298 RW |
4715 | void |
4716 | xlate_actions(struct xlate_in *xin, struct xlate_out *xout) | |
9583bc14 | 4717 | { |
e467ea42 BP |
4718 | *xout = (struct xlate_out) { |
4719 | .slow = 0, | |
4720 | .fail_open = false, | |
4721 | .has_learn = false, | |
4722 | .has_normal = false, | |
4723 | .has_fin_timeout = false, | |
4724 | .nf_output_iface = NF_OUT_DROP, | |
4725 | .mirrors = 0, | |
4726 | .n_recircs = 0, | |
4727 | }; | |
4728 | ||
84f0f298 | 4729 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
bb00fdef BP |
4730 | struct xbridge *xbridge = xbridge_lookup(xcfg, xin->ofproto); |
4731 | if (!xbridge) { | |
4732 | return; | |
4733 | } | |
4734 | ||
33bf9176 BP |
4735 | struct flow *flow = &xin->flow; |
4736 | ||
bb00fdef BP |
4737 | union mf_subvalue stack_stub[1024 / sizeof(union mf_subvalue)]; |
4738 | uint64_t action_set_stub[1024 / 8]; | |
49a73e0c | 4739 | struct flow_wildcards scratch_wc; |
1520ef4f BP |
4740 | uint64_t actions_stub[256 / 8]; |
4741 | struct ofpbuf scratch_actions = OFPBUF_STUB_INITIALIZER(actions_stub); | |
bb00fdef BP |
4742 | struct xlate_ctx ctx = { |
4743 | .xin = xin, | |
4744 | .xout = xout, | |
4745 | .base_flow = *flow, | |
4746 | .orig_tunnel_ip_dst = flow->tunnel.ip_dst, | |
4747 | .xbridge = xbridge, | |
4748 | .stack = OFPBUF_STUB_INITIALIZER(stack_stub), | |
4749 | .rule = xin->rule, | |
49a73e0c | 4750 | .wc = xin->wc ? xin->wc : &scratch_wc, |
1520ef4f | 4751 | .odp_actions = xin->odp_actions ? xin->odp_actions : &scratch_actions, |
bb00fdef BP |
4752 | |
4753 | .recurse = 0, | |
4754 | .resubmits = 0, | |
4755 | .in_group = false, | |
4756 | .in_action_set = false, | |
4757 | ||
4758 | .table_id = 0, | |
4759 | .rule_cookie = OVS_BE64_MAX, | |
4760 | .orig_skb_priority = flow->skb_priority, | |
4761 | .sflow_n_outputs = 0, | |
4762 | .sflow_odp_port = 0, | |
bb00fdef BP |
4763 | .exit = false, |
4764 | ||
4765 | .recirc_action_offset = -1, | |
4766 | .last_unroll_offset = -1, | |
4767 | ||
4768 | .was_mpls = false, | |
4769 | ||
4770 | .action_set_has_group = false, | |
4771 | .action_set = OFPBUF_STUB_INITIALIZER(action_set_stub), | |
4772 | }; | |
865ca6cf BP |
4773 | |
4774 | /* 'base_flow' reflects the packet as it came in, but we need it to reflect | |
4775 | * the packet as the datapath will treat it for output actions: | |
4776 | * | |
4777 | * - Our datapath doesn't retain tunneling information without us | |
4778 | * re-setting it, so clear the tunnel data. | |
4779 | * | |
4780 | * - For VLAN splinters, a higher layer may pretend that the packet | |
4781 | * came in on 'flow->in_port.ofp_port' with 'flow->vlan_tci' | |
4782 | * attached, because that's how we want to treat it from an OpenFlow | |
4783 | * perspective. But from the datapath's perspective it actually came | |
4784 | * in on a VLAN device without any VLAN attached. So here we put the | |
4785 | * datapath's view of the VLAN information in 'base_flow' to ensure | |
4786 | * correct treatment. | |
4787 | */ | |
bb00fdef | 4788 | memset(&ctx.base_flow.tunnel, 0, sizeof ctx.base_flow.tunnel); |
865ca6cf BP |
4789 | if (flow->in_port.ofp_port |
4790 | != vsp_realdev_to_vlandev(xbridge->ofproto, | |
4791 | flow->in_port.ofp_port, | |
4792 | flow->vlan_tci)) { | |
4793 | ctx.base_flow.vlan_tci = 0; | |
4794 | } | |
4795 | ||
1520ef4f | 4796 | ofpbuf_reserve(ctx.odp_actions, NL_A_U32_SIZE); |
234c3da9 BP |
4797 | if (xin->wc) { |
4798 | xlate_wc_init(&ctx); | |
4799 | } | |
bb00fdef | 4800 | |
46c88433 | 4801 | struct xport *in_port; |
9583bc14 | 4802 | |
46c88433 | 4803 | COVERAGE_INC(xlate_actions); |
9583bc14 | 4804 | |
e672ff9b JR |
4805 | /* The in_port of the original packet before recirculation. */ |
4806 | in_port = get_ofp_port(xbridge, flow->in_port.ofp_port); | |
4807 | ||
4808 | if (xin->recirc) { | |
4809 | const struct recirc_id_node *recirc = xin->recirc; | |
4810 | ||
4811 | if (xin->ofpacts_len > 0 || ctx.rule) { | |
4812 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); | |
4813 | ||
4814 | VLOG_WARN_RL(&rl, "Recirculation conflict (%s)!", | |
4815 | xin->ofpacts_len > 0 | |
4816 | ? "actions" | |
4817 | : "rule"); | |
1520ef4f | 4818 | goto exit; |
e672ff9b JR |
4819 | } |
4820 | ||
4821 | /* Set the bridge for post-recirculation processing if needed. */ | |
4822 | if (ctx.xbridge->ofproto != recirc->ofproto) { | |
4823 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
4824 | const struct xbridge *new_bridge = xbridge_lookup(xcfg, | |
4825 | recirc->ofproto); | |
4826 | ||
4827 | if (OVS_UNLIKELY(!new_bridge)) { | |
4828 | /* Drop the packet if the bridge cannot be found. */ | |
4829 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); | |
4830 | VLOG_WARN_RL(&rl, "Recirculation bridge no longer exists."); | |
1520ef4f | 4831 | goto exit; |
e672ff9b JR |
4832 | } |
4833 | ctx.xbridge = new_bridge; | |
4834 | } | |
4835 | ||
4836 | /* Set the post-recirculation table id. Note: A table lookup is done | |
4837 | * only if there are no post-recirculation actions. */ | |
4838 | ctx.table_id = recirc->table_id; | |
4839 | ||
4840 | /* Restore pipeline metadata. May change flow's in_port and other | |
4841 | * metadata to the values that existed when recirculation was | |
4842 | * triggered. */ | |
4843 | recirc_metadata_to_flow(&recirc->metadata, flow); | |
4844 | ||
4845 | /* Restore stack, if any. */ | |
4846 | if (recirc->stack) { | |
4847 | ofpbuf_put(&ctx.stack, recirc->stack->data, recirc->stack->size); | |
4848 | } | |
4849 | ||
4850 | /* Restore action set, if any. */ | |
4851 | if (recirc->action_set_len) { | |
4852 | const struct ofpact *a; | |
4853 | ||
4854 | ofpbuf_put(&ctx.action_set, recirc->ofpacts, | |
4855 | recirc->action_set_len); | |
4856 | ||
4857 | OFPACT_FOR_EACH(a, recirc->ofpacts, recirc->action_set_len) { | |
4858 | if (a->type == OFPACT_GROUP) { | |
4859 | ctx.action_set_has_group = true; | |
4860 | break; | |
4861 | } | |
4862 | } | |
4863 | } | |
4864 | ||
4865 | /* Restore recirculation actions. If there are no actions, processing | |
4866 | * will start with a lookup in the table set above. */ | |
4867 | if (recirc->ofpacts_len > recirc->action_set_len) { | |
4868 | xin->ofpacts_len = recirc->ofpacts_len - recirc->action_set_len; | |
4869 | xin->ofpacts = recirc->ofpacts + | |
4870 | recirc->action_set_len / sizeof *recirc->ofpacts; | |
4871 | } | |
4872 | } else if (OVS_UNLIKELY(flow->recirc_id)) { | |
4873 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); | |
4874 | ||
4875 | VLOG_WARN_RL(&rl, "Recirculation context not found for ID %"PRIx32, | |
4876 | flow->recirc_id); | |
1520ef4f | 4877 | goto exit; |
e672ff9b | 4878 | } |
621b8064 JR |
4879 | /* The bridge is now known so obtain its table version. */ |
4880 | ctx.tables_version = ofproto_dpif_get_tables_version(ctx.xbridge->ofproto); | |
9583bc14 | 4881 | |
10c44245 | 4882 | if (!xin->ofpacts && !ctx.rule) { |
b2e89cc9 BP |
4883 | ctx.rule = rule_dpif_lookup_from_table( |
4884 | ctx.xbridge->ofproto, ctx.tables_version, flow, xin->wc, | |
4885 | ctx.xin->xcache != NULL, ctx.xin->resubmit_stats, &ctx.table_id, | |
4886 | flow->in_port.ofp_port, true, true); | |
10c44245 | 4887 | if (ctx.xin->resubmit_stats) { |
b2e89cc9 | 4888 | rule_dpif_credit_stats(ctx.rule, ctx.xin->resubmit_stats); |
10c44245 | 4889 | } |
b256dc52 JS |
4890 | if (ctx.xin->xcache) { |
4891 | struct xc_entry *entry; | |
4892 | ||
4893 | entry = xlate_cache_add_entry(ctx.xin->xcache, XC_RULE); | |
b2e89cc9 | 4894 | entry->u.rule = ctx.rule; |
b256dc52 | 4895 | } |
a8c31348 BP |
4896 | |
4897 | if (OVS_UNLIKELY(ctx.xin->resubmit_hook)) { | |
b2e89cc9 | 4898 | ctx.xin->resubmit_hook(ctx.xin, ctx.rule, 0); |
a8c31348 | 4899 | } |
10c44245 | 4900 | } |
ee1afdd5 | 4901 | xout->fail_open = ctx.rule && rule_dpif_is_fail_open(ctx.rule); |
10c44245 | 4902 | |
2f739af0 | 4903 | struct flow orig_flow; |
e672ff9b | 4904 | if (mbridge_has_mirrors(xbridge->mbridge)) { |
9583bc14 EJ |
4905 | /* Do this conditionally because the copy is expensive enough that it |
4906 | * shows up in profiles. */ | |
33bf9176 | 4907 | orig_flow = *flow; |
9583bc14 EJ |
4908 | } |
4909 | ||
e672ff9b JR |
4910 | /* Tunnel stats only for non-recirculated packets. */ |
4911 | if (!xin->recirc && in_port && in_port->is_tunnel) { | |
b256dc52 JS |
4912 | if (ctx.xin->resubmit_stats) { |
4913 | netdev_vport_inc_rx(in_port->netdev, ctx.xin->resubmit_stats); | |
4914 | if (in_port->bfd) { | |
4915 | bfd_account_rx(in_port->bfd, ctx.xin->resubmit_stats); | |
4916 | } | |
4917 | } | |
4918 | if (ctx.xin->xcache) { | |
4919 | struct xc_entry *entry; | |
4920 | ||
4921 | entry = xlate_cache_add_entry(ctx.xin->xcache, XC_NETDEV); | |
4922 | entry->u.dev.rx = netdev_ref(in_port->netdev); | |
4923 | entry->u.dev.bfd = bfd_ref(in_port->bfd); | |
d6fc5f57 EJ |
4924 | } |
4925 | } | |
4926 | ||
e672ff9b JR |
4927 | /* Do not perform special processing on recirculated packets, |
4928 | * as recirculated packets are not really received by the bridge. */ | |
515793d5 | 4929 | if (xin->recirc || !process_special(&ctx, in_port)) { |
e672ff9b | 4930 | /* Sampling is done only for packets really received by the bridge. */ |
a6092018 | 4931 | unsigned int user_cookie_offset = 0; |
e672ff9b | 4932 | if (!xin->recirc) { |
a6092018 BP |
4933 | user_cookie_offset = compose_sflow_action(&ctx); |
4934 | compose_ipfix_action(&ctx, ODPP_NONE); | |
e672ff9b | 4935 | } |
0731abc5 | 4936 | size_t sample_actions_len = ctx.odp_actions->size; |
9583bc14 | 4937 | |
234c3da9 BP |
4938 | if (tnl_process_ecn(flow) |
4939 | && (!in_port || may_receive(in_port, &ctx))) { | |
1806291d BP |
4940 | const struct ofpact *ofpacts; |
4941 | size_t ofpacts_len; | |
4942 | ||
4943 | if (xin->ofpacts) { | |
4944 | ofpacts = xin->ofpacts; | |
4945 | ofpacts_len = xin->ofpacts_len; | |
4946 | } else if (ctx.rule) { | |
4947 | const struct rule_actions *actions | |
4948 | = rule_dpif_get_actions(ctx.rule); | |
4949 | ofpacts = actions->ofpacts; | |
4950 | ofpacts_len = actions->ofpacts_len; | |
4951 | ctx.rule_cookie = rule_dpif_get_flow_cookie(ctx.rule); | |
4952 | } else { | |
4953 | OVS_NOT_REACHED(); | |
4954 | } | |
4955 | ||
9583bc14 EJ |
4956 | do_xlate_actions(ofpacts, ofpacts_len, &ctx); |
4957 | ||
4958 | /* We've let OFPP_NORMAL and the learning action look at the | |
4959 | * packet, so drop it now if forwarding is disabled. */ | |
9efd308e DV |
4960 | if (in_port && (!xport_stp_forward_state(in_port) || |
4961 | !xport_rstp_forward_state(in_port))) { | |
8ec90813 | 4962 | /* Drop all actions added by do_xlate_actions() above. */ |
1520ef4f | 4963 | ctx.odp_actions->size = sample_actions_len; |
e672ff9b JR |
4964 | |
4965 | /* Undo changes that may have been done for recirculation. */ | |
4966 | if (exit_recirculates(&ctx)) { | |
4967 | ctx.action_set.size = ctx.recirc_action_offset; | |
4968 | ctx.recirc_action_offset = -1; | |
4969 | ctx.last_unroll_offset = -1; | |
4970 | } | |
8ec90813 | 4971 | } else if (ctx.action_set.size) { |
e672ff9b JR |
4972 | /* Translate action set only if not dropping the packet and |
4973 | * not recirculating. */ | |
4974 | if (!exit_recirculates(&ctx)) { | |
4975 | xlate_action_set(&ctx); | |
4976 | } | |
4977 | } | |
4978 | /* Check if need to recirculate. */ | |
4979 | if (exit_recirculates(&ctx)) { | |
4980 | compose_recirculate_action(&ctx); | |
9583bc14 EJ |
4981 | } |
4982 | } | |
4983 | ||
e672ff9b JR |
4984 | /* Output only fully processed packets. */ |
4985 | if (!exit_recirculates(&ctx) | |
4986 | && xbridge->has_in_band | |
ce4a6b76 BP |
4987 | && in_band_must_output_to_local_port(flow) |
4988 | && !actions_output_to_local_port(&ctx)) { | |
e93ef1c7 | 4989 | compose_output_action(&ctx, OFPP_LOCAL, NULL); |
9583bc14 | 4990 | } |
aaa0fbae | 4991 | |
a6092018 BP |
4992 | if (user_cookie_offset) { |
4993 | fix_sflow_action(&ctx, user_cookie_offset); | |
e672ff9b JR |
4994 | } |
4995 | /* Only mirror fully processed packets. */ | |
4996 | if (!exit_recirculates(&ctx) | |
4997 | && mbridge_has_mirrors(xbridge->mbridge)) { | |
9583bc14 EJ |
4998 | add_mirror_actions(&ctx, &orig_flow); |
4999 | } | |
9583bc14 EJ |
5000 | } |
5001 | ||
1520ef4f | 5002 | if (nl_attr_oversized(ctx.odp_actions->size)) { |
542024c4 | 5003 | /* These datapath actions are too big for a Netlink attribute, so we |
0f032e95 BP |
5004 | * can't hand them to the kernel directly. dpif_execute() can execute |
5005 | * them one by one with help, so just mark the result as SLOW_ACTION to | |
5006 | * prevent the flow from being installed. */ | |
5007 | COVERAGE_INC(xlate_actions_oversize); | |
5008 | ctx.xout->slow |= SLOW_ACTION; | |
1520ef4f | 5009 | } else if (too_many_output_actions(ctx.odp_actions)) { |
7d031d7e BP |
5010 | COVERAGE_INC(xlate_actions_too_many_output); |
5011 | ctx.xout->slow |= SLOW_ACTION; | |
542024c4 BP |
5012 | } |
5013 | ||
e672ff9b JR |
5014 | /* Update mirror stats only for packets really received by the bridge. */ |
5015 | if (!xin->recirc && mbridge_has_mirrors(xbridge->mbridge)) { | |
b256dc52 | 5016 | if (ctx.xin->resubmit_stats) { |
e672ff9b | 5017 | mirror_update_stats(xbridge->mbridge, xout->mirrors, |
b256dc52 JS |
5018 | ctx.xin->resubmit_stats->n_packets, |
5019 | ctx.xin->resubmit_stats->n_bytes); | |
5020 | } | |
5021 | if (ctx.xin->xcache) { | |
5022 | struct xc_entry *entry; | |
5023 | ||
5024 | entry = xlate_cache_add_entry(ctx.xin->xcache, XC_MIRROR); | |
e672ff9b | 5025 | entry->u.mirror.mbridge = mbridge_ref(xbridge->mbridge); |
b256dc52 JS |
5026 | entry->u.mirror.mirrors = xout->mirrors; |
5027 | } | |
5028 | } | |
5029 | ||
1806291d BP |
5030 | /* Do netflow only for packets really received by the bridge and not sent |
5031 | * to the controller. We consider packets sent to the controller to be | |
5032 | * part of the control plane rather than the data plane. */ | |
5033 | if (!xin->recirc && xbridge->netflow && !(xout->slow & SLOW_CONTROLLER)) { | |
5034 | if (ctx.xin->resubmit_stats) { | |
5035 | netflow_flow_update(xbridge->netflow, flow, | |
5036 | xout->nf_output_iface, | |
5037 | ctx.xin->resubmit_stats); | |
5038 | } | |
5039 | if (ctx.xin->xcache) { | |
5040 | struct xc_entry *entry; | |
b256dc52 | 5041 | |
1806291d BP |
5042 | entry = xlate_cache_add_entry(ctx.xin->xcache, XC_NETFLOW); |
5043 | entry->u.nf.netflow = netflow_ref(xbridge->netflow); | |
5044 | entry->u.nf.flow = xmemdup(flow, sizeof *flow); | |
5045 | entry->u.nf.iface = xout->nf_output_iface; | |
d6fc5f57 EJ |
5046 | } |
5047 | } | |
5048 | ||
49a73e0c | 5049 | if (xin->wc) { |
234c3da9 | 5050 | xlate_wc_finish(&ctx); |
c56fac1b | 5051 | } |
1520ef4f BP |
5052 | |
5053 | exit: | |
5054 | ofpbuf_uninit(&ctx.stack); | |
5055 | ofpbuf_uninit(&ctx.action_set); | |
5056 | ofpbuf_uninit(&scratch_actions); | |
91d6cd12 AW |
5057 | } |
5058 | ||
5059 | /* Sends 'packet' out 'ofport'. | |
5060 | * May modify 'packet'. | |
5061 | * Returns 0 if successful, otherwise a positive errno value. */ | |
5062 | int | |
cf62fa4c | 5063 | xlate_send_packet(const struct ofport_dpif *ofport, struct dp_packet *packet) |
91d6cd12 | 5064 | { |
84f0f298 | 5065 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
91d6cd12 | 5066 | struct xport *xport; |
91d6cd12 | 5067 | struct ofpact_output output; |
91d6cd12 | 5068 | struct flow flow; |
91d6cd12 | 5069 | |
91d6cd12 AW |
5070 | ofpact_init(&output.ofpact, OFPACT_OUTPUT, sizeof output); |
5071 | /* Use OFPP_NONE as the in_port to avoid special packet processing. */ | |
cf62fa4c | 5072 | flow_extract(packet, &flow); |
b5e7e61a | 5073 | flow.in_port.ofp_port = OFPP_NONE; |
91d6cd12 | 5074 | |
84f0f298 | 5075 | xport = xport_lookup(xcfg, ofport); |
91d6cd12 | 5076 | if (!xport) { |
02ea2703 | 5077 | return EINVAL; |
91d6cd12 | 5078 | } |
91d6cd12 AW |
5079 | output.port = xport->ofp_port; |
5080 | output.max_len = 0; | |
e491a67a YT |
5081 | |
5082 | return ofproto_dpif_execute_actions(xport->xbridge->ofproto, &flow, NULL, | |
5083 | &output.ofpact, sizeof output, | |
5084 | packet); | |
9583bc14 | 5085 | } |
b256dc52 JS |
5086 | |
5087 | struct xlate_cache * | |
5088 | xlate_cache_new(void) | |
5089 | { | |
5090 | struct xlate_cache *xcache = xmalloc(sizeof *xcache); | |
5091 | ||
5092 | ofpbuf_init(&xcache->entries, 512); | |
5093 | return xcache; | |
5094 | } | |
5095 | ||
5096 | static struct xc_entry * | |
5097 | xlate_cache_add_entry(struct xlate_cache *xcache, enum xc_type type) | |
5098 | { | |
5099 | struct xc_entry *entry; | |
5100 | ||
5101 | entry = ofpbuf_put_zeros(&xcache->entries, sizeof *entry); | |
5102 | entry->type = type; | |
5103 | ||
5104 | return entry; | |
5105 | } | |
5106 | ||
5107 | static void | |
5108 | xlate_cache_netdev(struct xc_entry *entry, const struct dpif_flow_stats *stats) | |
5109 | { | |
5110 | if (entry->u.dev.tx) { | |
5111 | netdev_vport_inc_tx(entry->u.dev.tx, stats); | |
5112 | } | |
5113 | if (entry->u.dev.rx) { | |
5114 | netdev_vport_inc_rx(entry->u.dev.rx, stats); | |
5115 | } | |
5116 | if (entry->u.dev.bfd) { | |
5117 | bfd_account_rx(entry->u.dev.bfd, stats); | |
5118 | } | |
5119 | } | |
5120 | ||
5121 | static void | |
5122 | xlate_cache_normal(struct ofproto_dpif *ofproto, struct flow *flow, int vlan) | |
5123 | { | |
84f0f298 | 5124 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
b256dc52 JS |
5125 | struct xbridge *xbridge; |
5126 | struct xbundle *xbundle; | |
5127 | struct flow_wildcards wc; | |
5128 | ||
84f0f298 | 5129 | xbridge = xbridge_lookup(xcfg, ofproto); |
b256dc52 JS |
5130 | if (!xbridge) { |
5131 | return; | |
5132 | } | |
5133 | ||
5134 | xbundle = lookup_input_bundle(xbridge, flow->in_port.ofp_port, false, | |
5135 | NULL); | |
5136 | if (!xbundle) { | |
5137 | return; | |
5138 | } | |
5139 | ||
5140 | update_learning_table(xbridge, flow, &wc, vlan, xbundle); | |
5141 | } | |
5142 | ||
5143 | /* Push stats and perform side effects of flow translation. */ | |
5144 | void | |
0725e747 | 5145 | xlate_push_stats(struct xlate_cache *xcache, |
b256dc52 JS |
5146 | const struct dpif_flow_stats *stats) |
5147 | { | |
5148 | struct xc_entry *entry; | |
5149 | struct ofpbuf entries = xcache->entries; | |
a36de779 | 5150 | uint8_t dmac[ETH_ADDR_LEN]; |
b256dc52 | 5151 | |
bc388583 BP |
5152 | if (!stats->n_packets) { |
5153 | return; | |
5154 | } | |
5155 | ||
b256dc52 JS |
5156 | XC_ENTRY_FOR_EACH (entry, entries, xcache) { |
5157 | switch (entry->type) { | |
5158 | case XC_RULE: | |
5159 | rule_dpif_credit_stats(entry->u.rule, stats); | |
5160 | break; | |
5161 | case XC_BOND: | |
5162 | bond_account(entry->u.bond.bond, entry->u.bond.flow, | |
5163 | entry->u.bond.vid, stats->n_bytes); | |
5164 | break; | |
5165 | case XC_NETDEV: | |
5166 | xlate_cache_netdev(entry, stats); | |
5167 | break; | |
5168 | case XC_NETFLOW: | |
5169 | netflow_flow_update(entry->u.nf.netflow, entry->u.nf.flow, | |
5170 | entry->u.nf.iface, stats); | |
5171 | break; | |
5172 | case XC_MIRROR: | |
5173 | mirror_update_stats(entry->u.mirror.mbridge, | |
5174 | entry->u.mirror.mirrors, | |
5175 | stats->n_packets, stats->n_bytes); | |
5176 | break; | |
5177 | case XC_LEARN: | |
0725e747 | 5178 | ofproto_dpif_flow_mod(entry->u.learn.ofproto, entry->u.learn.fm); |
b256dc52 JS |
5179 | break; |
5180 | case XC_NORMAL: | |
0725e747 BP |
5181 | xlate_cache_normal(entry->u.normal.ofproto, entry->u.normal.flow, |
5182 | entry->u.normal.vlan); | |
b256dc52 JS |
5183 | break; |
5184 | case XC_FIN_TIMEOUT: | |
5185 | xlate_fin_timeout__(entry->u.fin.rule, stats->tcp_flags, | |
5186 | entry->u.fin.idle, entry->u.fin.hard); | |
5187 | break; | |
1e684d7d RW |
5188 | case XC_GROUP: |
5189 | group_dpif_credit_stats(entry->u.group.group, entry->u.group.bucket, | |
5190 | stats); | |
5191 | break; | |
a36de779 PS |
5192 | case XC_TNL_ARP: |
5193 | /* Lookup arp to avoid arp timeout. */ | |
5194 | tnl_arp_lookup(entry->u.tnl_arp_cache.br_name, entry->u.tnl_arp_cache.d_ip, dmac); | |
5195 | break; | |
b256dc52 JS |
5196 | default: |
5197 | OVS_NOT_REACHED(); | |
5198 | } | |
5199 | } | |
5200 | } | |
5201 | ||
5202 | static void | |
5203 | xlate_dev_unref(struct xc_entry *entry) | |
5204 | { | |
5205 | if (entry->u.dev.tx) { | |
5206 | netdev_close(entry->u.dev.tx); | |
5207 | } | |
5208 | if (entry->u.dev.rx) { | |
5209 | netdev_close(entry->u.dev.rx); | |
5210 | } | |
5211 | if (entry->u.dev.bfd) { | |
5212 | bfd_unref(entry->u.dev.bfd); | |
5213 | } | |
5214 | } | |
5215 | ||
5216 | static void | |
5217 | xlate_cache_clear_netflow(struct netflow *netflow, struct flow *flow) | |
5218 | { | |
b256dc52 JS |
5219 | netflow_flow_clear(netflow, flow); |
5220 | netflow_unref(netflow); | |
5221 | free(flow); | |
5222 | } | |
5223 | ||
5224 | void | |
5225 | xlate_cache_clear(struct xlate_cache *xcache) | |
5226 | { | |
5227 | struct xc_entry *entry; | |
5228 | struct ofpbuf entries; | |
5229 | ||
5230 | if (!xcache) { | |
5231 | return; | |
5232 | } | |
5233 | ||
5234 | XC_ENTRY_FOR_EACH (entry, entries, xcache) { | |
5235 | switch (entry->type) { | |
5236 | case XC_RULE: | |
5237 | rule_dpif_unref(entry->u.rule); | |
5238 | break; | |
5239 | case XC_BOND: | |
5240 | free(entry->u.bond.flow); | |
5241 | bond_unref(entry->u.bond.bond); | |
5242 | break; | |
5243 | case XC_NETDEV: | |
5244 | xlate_dev_unref(entry); | |
5245 | break; | |
5246 | case XC_NETFLOW: | |
5247 | xlate_cache_clear_netflow(entry->u.nf.netflow, entry->u.nf.flow); | |
5248 | break; | |
5249 | case XC_MIRROR: | |
5250 | mbridge_unref(entry->u.mirror.mbridge); | |
5251 | break; | |
5252 | case XC_LEARN: | |
4165b5e0 JS |
5253 | free(entry->u.learn.fm); |
5254 | ofpbuf_delete(entry->u.learn.ofpacts); | |
b256dc52 JS |
5255 | break; |
5256 | case XC_NORMAL: | |
5257 | free(entry->u.normal.flow); | |
5258 | break; | |
5259 | case XC_FIN_TIMEOUT: | |
83709dfa JR |
5260 | /* 'u.fin.rule' is always already held as a XC_RULE, which |
5261 | * has already released it's reference above. */ | |
b256dc52 | 5262 | break; |
1e684d7d RW |
5263 | case XC_GROUP: |
5264 | group_dpif_unref(entry->u.group.group); | |
5265 | break; | |
a36de779 PS |
5266 | case XC_TNL_ARP: |
5267 | break; | |
b256dc52 JS |
5268 | default: |
5269 | OVS_NOT_REACHED(); | |
5270 | } | |
5271 | } | |
5272 | ||
5273 | ofpbuf_clear(&xcache->entries); | |
5274 | } | |
5275 | ||
5276 | void | |
5277 | xlate_cache_delete(struct xlate_cache *xcache) | |
5278 | { | |
5279 | xlate_cache_clear(xcache); | |
5280 | ofpbuf_uninit(&xcache->entries); | |
5281 | free(xcache); | |
5282 | } |