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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". */ | |
178 | union mf_subvalue init_stack[1024 / sizeof(union mf_subvalue)]; | |
179 | struct ofpbuf stack; | |
180 | ||
181 | /* The rule that we are currently translating, or NULL. */ | |
182 | struct rule_dpif *rule; | |
183 | ||
98b07853 BP |
184 | /* Resubmit statistics, via xlate_table_action(). */ |
185 | int recurse; /* Current resubmit nesting depth. */ | |
186 | int resubmits; /* Total number of resubmits. */ | |
5a070238 | 187 | bool in_group; /* Currently translating ofgroup, if true. */ |
029ca940 | 188 | bool in_action_set; /* Currently translating action_set, if true. */ |
98b07853 | 189 | |
4d0acc70 | 190 | uint8_t table_id; /* OpenFlow table ID where flow was found. */ |
8b1e5560 JR |
191 | ovs_be64 rule_cookie; /* Cookie of the rule being translated. */ |
192 | uint32_t orig_skb_priority; /* Priority when packet arrived. */ | |
4d0acc70 | 193 | uint32_t sflow_n_outputs; /* Number of output ports. */ |
4e022ec0 | 194 | odp_port_t sflow_odp_port; /* Output port for composing sFlow action. */ |
4d0acc70 EJ |
195 | uint16_t user_cookie_offset;/* Used for user_action_cookie fixup. */ |
196 | bool exit; /* No further actions should be processed. */ | |
7fdb60a7 | 197 | |
e672ff9b JR |
198 | /* These are used for non-bond recirculation. The recirculation IDs are |
199 | * stored in xout and must be associated with a datapath flow (ukey), | |
200 | * otherwise they will be freed when the xout is uninitialized. | |
201 | * | |
202 | * | |
203 | * Steps in Recirculation Translation | |
204 | * ================================== | |
205 | * | |
206 | * At some point during translation, the code recognizes the need for | |
207 | * recirculation. For example, recirculation is necessary when, after | |
208 | * popping the last MPLS label, an action or a match tries to examine or | |
209 | * modify a field that has been newly revealed following the MPLS label. | |
210 | * | |
211 | * The simplest part of the work to be done is to commit existing changes to | |
212 | * the packet, which produces datapath actions corresponding to the changes, | |
213 | * and after this, add an OVS_ACTION_ATTR_RECIRC datapath action. | |
214 | * | |
215 | * The main problem here is preserving state. When the datapath executes | |
216 | * OVS_ACTION_ATTR_RECIRC, it will upcall to userspace to get a translation | |
217 | * for the post-recirculation actions. At this point userspace has to | |
218 | * resume the translation where it left off, which means that it has to | |
219 | * execute the following: | |
220 | * | |
221 | * - The action that prompted recirculation, and any actions following | |
222 | * it within the same flow. | |
223 | * | |
224 | * - If the action that prompted recirculation was invoked within a | |
225 | * NXAST_RESUBMIT, then any actions following the resubmit. These | |
226 | * "resubmit"s can be nested, so this has to go all the way up the | |
227 | * control stack. | |
228 | * | |
229 | * - The OpenFlow 1.1+ action set. | |
230 | * | |
231 | * State that actions and flow table lookups can depend on, such as the | |
232 | * following, must also be preserved: | |
233 | * | |
234 | * - Metadata fields (input port, registers, OF1.1+ metadata, ...). | |
235 | * | |
236 | * - Action set, stack | |
237 | * | |
238 | * - The table ID and cookie of the flow being translated at each level | |
239 | * of the control stack (since OFPAT_CONTROLLER actions send these to | |
240 | * the controller). | |
241 | * | |
242 | * Translation allows for the control of this state preservation via these | |
243 | * members. When a need for recirculation is identified, the translation | |
244 | * process: | |
245 | * | |
246 | * 1. Sets 'recirc_action_offset' to the current size of 'action_set'. The | |
247 | * action set is part of what needs to be preserved, so this allows the | |
248 | * action set and the additional state to share the 'action_set' buffer. | |
249 | * Later steps can tell that setup for recirculation is in progress from | |
250 | * the nonnegative value of 'recirc_action_offset'. | |
251 | * | |
252 | * 2. Sets 'exit' to true to tell later steps that we're exiting from the | |
253 | * translation process. | |
254 | * | |
255 | * 3. Adds an OFPACT_UNROLL_XLATE action to 'action_set'. This action | |
256 | * holds the current table ID and cookie so that they can be restored | |
257 | * during a post-recirculation upcall translation. | |
258 | * | |
259 | * 4. Adds the action that prompted recirculation and any actions following | |
260 | * it within the same flow to 'action_set', so that they can be executed | |
261 | * during a post-recirculation upcall translation. | |
262 | * | |
263 | * 5. Returns. | |
264 | * | |
265 | * 6. The action that prompted recirculation might be nested in a stack of | |
266 | * nested "resubmit"s that have actions remaining. Each of these notices | |
267 | * that we're exiting (from 'exit') and that recirculation setup is in | |
268 | * progress (from 'recirc_action_offset') and responds by adding more | |
269 | * OFPACT_UNROLL_XLATE actions to 'action_set', as necessary, and any | |
270 | * actions that were yet unprocessed. | |
271 | * | |
272 | * The caller stores all the state produced by this process associated with | |
273 | * the recirculation ID. For post-recirculation upcall translation, the | |
274 | * caller passes it back in for the new translation to execute. The | |
275 | * process yielded a set of ofpacts that can be translated directly, so it | |
276 | * is not much of a special case at that point. | |
277 | */ | |
278 | int recirc_action_offset; /* Offset in 'action_set' to actions to be | |
279 | * executed after recirculation, or -1. */ | |
280 | int last_unroll_offset; /* Offset in 'action_set' to the latest unroll | |
281 | * action, or -1. */ | |
282 | ||
7bbdd84f SH |
283 | /* True if a packet was but is no longer MPLS (due to an MPLS pop action). |
284 | * This is a trigger for recirculation in cases where translating an action | |
285 | * or looking up a flow requires access to the fields of the packet after | |
1d741d6d | 286 | * the MPLS label stack that was originally present. */ |
7bbdd84f SH |
287 | bool was_mpls; |
288 | ||
7fdb60a7 SH |
289 | /* OpenFlow 1.1+ action set. |
290 | * | |
291 | * 'action_set' accumulates "struct ofpact"s added by OFPACT_WRITE_ACTIONS. | |
292 | * When translation is otherwise complete, ofpacts_execute_action_set() | |
293 | * converts it to a set of "struct ofpact"s that can be translated into | |
ed9c9e3e | 294 | * datapath actions. */ |
c61f3870 | 295 | bool action_set_has_group; /* Action set contains OFPACT_GROUP? */ |
7fdb60a7 SH |
296 | struct ofpbuf action_set; /* Action set. */ |
297 | uint64_t action_set_stub[1024 / 8]; | |
4d0acc70 EJ |
298 | }; |
299 | ||
ed9c9e3e JR |
300 | static void xlate_action_set(struct xlate_ctx *ctx); |
301 | ||
1d741d6d JR |
302 | static void |
303 | ctx_trigger_recirculation(struct xlate_ctx *ctx) | |
304 | { | |
305 | ctx->exit = true; | |
306 | ctx->recirc_action_offset = ctx->action_set.size; | |
307 | } | |
308 | ||
309 | static bool | |
310 | ctx_first_recirculation_action(const struct xlate_ctx *ctx) | |
311 | { | |
312 | return ctx->recirc_action_offset == ctx->action_set.size; | |
313 | } | |
314 | ||
e672ff9b JR |
315 | static inline bool |
316 | exit_recirculates(const struct xlate_ctx *ctx) | |
317 | { | |
318 | /* When recirculating the 'recirc_action_offset' has a non-negative value. | |
319 | */ | |
320 | return ctx->recirc_action_offset >= 0; | |
321 | } | |
322 | ||
323 | static void compose_recirculate_action(struct xlate_ctx *ctx); | |
324 | ||
9583bc14 EJ |
325 | /* A controller may use OFPP_NONE as the ingress port to indicate that |
326 | * it did not arrive on a "real" port. 'ofpp_none_bundle' exists for | |
327 | * when an input bundle is needed for validation (e.g., mirroring or | |
328 | * OFPP_NORMAL processing). It is not connected to an 'ofproto' or have | |
3548d242 BP |
329 | * any 'port' structs, so care must be taken when dealing with it. */ |
330 | static struct xbundle ofpp_none_bundle = { | |
331 | .name = "OFPP_NONE", | |
332 | .vlan_mode = PORT_VLAN_TRUNK | |
333 | }; | |
9583bc14 | 334 | |
55954f6e EJ |
335 | /* Node in 'xport''s 'skb_priorities' map. Used to maintain a map from |
336 | * 'priority' (the datapath's term for QoS queue) to the dscp bits which all | |
337 | * traffic egressing the 'ofport' with that priority should be marked with. */ | |
338 | struct skb_priority_to_dscp { | |
339 | struct hmap_node hmap_node; /* Node in 'ofport_dpif''s 'skb_priorities'. */ | |
340 | uint32_t skb_priority; /* Priority of this queue (see struct flow). */ | |
341 | ||
342 | uint8_t dscp; /* DSCP bits to mark outgoing traffic with. */ | |
343 | }; | |
344 | ||
b256dc52 JS |
345 | enum xc_type { |
346 | XC_RULE, | |
347 | XC_BOND, | |
348 | XC_NETDEV, | |
349 | XC_NETFLOW, | |
350 | XC_MIRROR, | |
351 | XC_LEARN, | |
352 | XC_NORMAL, | |
353 | XC_FIN_TIMEOUT, | |
1e684d7d | 354 | XC_GROUP, |
a36de779 | 355 | XC_TNL_ARP, |
b256dc52 JS |
356 | }; |
357 | ||
358 | /* xlate_cache entries hold enough information to perform the side effects of | |
359 | * xlate_actions() for a rule, without needing to perform rule translation | |
360 | * from scratch. The primary usage of these is to submit statistics to objects | |
361 | * that a flow relates to, although they may be used for other effects as well | |
362 | * (for instance, refreshing hard timeouts for learned flows). */ | |
363 | struct xc_entry { | |
364 | enum xc_type type; | |
365 | union { | |
366 | struct rule_dpif *rule; | |
367 | struct { | |
368 | struct netdev *tx; | |
369 | struct netdev *rx; | |
370 | struct bfd *bfd; | |
371 | } dev; | |
372 | struct { | |
373 | struct netflow *netflow; | |
374 | struct flow *flow; | |
375 | ofp_port_t iface; | |
376 | } nf; | |
377 | struct { | |
378 | struct mbridge *mbridge; | |
379 | mirror_mask_t mirrors; | |
380 | } mirror; | |
381 | struct { | |
382 | struct bond *bond; | |
383 | struct flow *flow; | |
384 | uint16_t vid; | |
385 | } bond; | |
386 | struct { | |
4165b5e0 JS |
387 | struct ofproto_dpif *ofproto; |
388 | struct ofputil_flow_mod *fm; | |
389 | struct ofpbuf *ofpacts; | |
b256dc52 JS |
390 | } learn; |
391 | struct { | |
392 | struct ofproto_dpif *ofproto; | |
393 | struct flow *flow; | |
394 | int vlan; | |
395 | } normal; | |
396 | struct { | |
397 | struct rule_dpif *rule; | |
398 | uint16_t idle; | |
399 | uint16_t hard; | |
400 | } fin; | |
1e684d7d RW |
401 | struct { |
402 | struct group_dpif *group; | |
403 | struct ofputil_bucket *bucket; | |
404 | } group; | |
a36de779 PS |
405 | struct { |
406 | char br_name[IFNAMSIZ]; | |
407 | ovs_be32 d_ip; | |
408 | } tnl_arp_cache; | |
b256dc52 JS |
409 | } u; |
410 | }; | |
411 | ||
412 | #define XC_ENTRY_FOR_EACH(entry, entries, xcache) \ | |
413 | entries = xcache->entries; \ | |
414 | for (entry = ofpbuf_try_pull(&entries, sizeof *entry); \ | |
415 | entry; \ | |
416 | entry = ofpbuf_try_pull(&entries, sizeof *entry)) | |
417 | ||
418 | struct xlate_cache { | |
419 | struct ofpbuf entries; | |
420 | }; | |
421 | ||
84f0f298 RW |
422 | /* Xlate config contains hash maps of all bridges, bundles and ports. |
423 | * Xcfgp contains the pointer to the current xlate configuration. | |
424 | * When the main thread needs to change the configuration, it copies xcfgp to | |
425 | * new_xcfg and edits new_xcfg. This enables the use of RCU locking which | |
426 | * does not block handler and revalidator threads. */ | |
427 | struct xlate_cfg { | |
428 | struct hmap xbridges; | |
429 | struct hmap xbundles; | |
430 | struct hmap xports; | |
431 | }; | |
b1b72f2d | 432 | static OVSRCU_TYPE(struct xlate_cfg *) xcfgp = OVSRCU_INITIALIZER(NULL); |
f439f23b | 433 | static struct xlate_cfg *new_xcfg = NULL; |
46c88433 EJ |
434 | |
435 | static bool may_receive(const struct xport *, struct xlate_ctx *); | |
9583bc14 EJ |
436 | static void do_xlate_actions(const struct ofpact *, size_t ofpacts_len, |
437 | struct xlate_ctx *); | |
adcf00ba | 438 | static void xlate_normal(struct xlate_ctx *); |
34dd0d78 | 439 | static inline void xlate_report(struct xlate_ctx *, const char *); |
6d328fa2 SH |
440 | static void xlate_table_action(struct xlate_ctx *, ofp_port_t in_port, |
441 | uint8_t table_id, bool may_packet_in, | |
442 | bool honor_table_miss); | |
46c88433 EJ |
443 | static bool input_vid_is_valid(uint16_t vid, struct xbundle *, bool warn); |
444 | static uint16_t input_vid_to_vlan(const struct xbundle *, uint16_t vid); | |
445 | static void output_normal(struct xlate_ctx *, const struct xbundle *, | |
9583bc14 | 446 | uint16_t vlan); |
e93ef1c7 JR |
447 | |
448 | /* Optional bond recirculation parameter to compose_output_action(). */ | |
449 | struct xlate_bond_recirc { | |
450 | uint32_t recirc_id; /* !0 Use recirculation instead of output. */ | |
451 | uint8_t hash_alg; /* !0 Compute hash for recirc before. */ | |
452 | uint32_t hash_basis; /* Compute hash for recirc before. */ | |
453 | }; | |
454 | ||
455 | static void compose_output_action(struct xlate_ctx *, ofp_port_t ofp_port, | |
456 | const struct xlate_bond_recirc *xr); | |
9583bc14 | 457 | |
84f0f298 RW |
458 | static struct xbridge *xbridge_lookup(struct xlate_cfg *, |
459 | const struct ofproto_dpif *); | |
460 | static struct xbundle *xbundle_lookup(struct xlate_cfg *, | |
461 | const struct ofbundle *); | |
462 | static struct xport *xport_lookup(struct xlate_cfg *, | |
463 | const struct ofport_dpif *); | |
46c88433 | 464 | static struct xport *get_ofp_port(const struct xbridge *, ofp_port_t ofp_port); |
55954f6e EJ |
465 | static struct skb_priority_to_dscp *get_skb_priority(const struct xport *, |
466 | uint32_t skb_priority); | |
467 | static void clear_skb_priorities(struct xport *); | |
16194afd | 468 | static size_t count_skb_priorities(const struct xport *); |
55954f6e EJ |
469 | static bool dscp_from_skb_priority(const struct xport *, uint32_t skb_priority, |
470 | uint8_t *dscp); | |
46c88433 | 471 | |
b256dc52 JS |
472 | static struct xc_entry *xlate_cache_add_entry(struct xlate_cache *xc, |
473 | enum xc_type type); | |
84f0f298 RW |
474 | static void xlate_xbridge_init(struct xlate_cfg *, struct xbridge *); |
475 | static void xlate_xbundle_init(struct xlate_cfg *, struct xbundle *); | |
476 | static void xlate_xport_init(struct xlate_cfg *, struct xport *); | |
9efd308e | 477 | static void xlate_xbridge_set(struct xbridge *, struct dpif *, |
9efd308e DV |
478 | const struct mac_learning *, struct stp *, |
479 | struct rstp *, const struct mcast_snooping *, | |
480 | const struct mbridge *, | |
481 | const struct dpif_sflow *, | |
482 | const struct dpif_ipfix *, | |
2f47cdf4 | 483 | const struct netflow *, |
84f0f298 | 484 | bool forward_bpdu, bool has_in_band, |
b440dd8c | 485 | const struct dpif_backer_support *); |
84f0f298 RW |
486 | static void xlate_xbundle_set(struct xbundle *xbundle, |
487 | enum port_vlan_mode vlan_mode, int vlan, | |
488 | unsigned long *trunks, bool use_priority_tags, | |
489 | const struct bond *bond, const struct lacp *lacp, | |
490 | bool floodable); | |
491 | static void xlate_xport_set(struct xport *xport, odp_port_t odp_port, | |
492 | const struct netdev *netdev, const struct cfm *cfm, | |
0477baa9 DF |
493 | const struct bfd *bfd, const struct lldp *lldp, |
494 | int stp_port_no, const struct rstp_port *rstp_port, | |
84f0f298 RW |
495 | enum ofputil_port_config config, |
496 | enum ofputil_port_state state, bool is_tunnel, | |
497 | bool may_enable); | |
498 | static void xlate_xbridge_remove(struct xlate_cfg *, struct xbridge *); | |
499 | static void xlate_xbundle_remove(struct xlate_cfg *, struct xbundle *); | |
500 | static void xlate_xport_remove(struct xlate_cfg *, struct xport *); | |
501 | static void xlate_xbridge_copy(struct xbridge *); | |
502 | static void xlate_xbundle_copy(struct xbridge *, struct xbundle *); | |
503 | static void xlate_xport_copy(struct xbridge *, struct xbundle *, | |
504 | struct xport *); | |
505 | static void xlate_xcfg_free(struct xlate_cfg *); | |
b256dc52 | 506 | |
34dd0d78 JR |
507 | static inline void |
508 | xlate_report(struct xlate_ctx *ctx, const char *s) | |
509 | { | |
510 | if (OVS_UNLIKELY(ctx->xin->report_hook)) { | |
511 | ctx->xin->report_hook(ctx->xin, s, ctx->recurse); | |
512 | } | |
513 | } | |
84f0f298 RW |
514 | |
515 | static void | |
516 | xlate_xbridge_init(struct xlate_cfg *xcfg, struct xbridge *xbridge) | |
517 | { | |
518 | list_init(&xbridge->xbundles); | |
519 | hmap_init(&xbridge->xports); | |
520 | hmap_insert(&xcfg->xbridges, &xbridge->hmap_node, | |
521 | hash_pointer(xbridge->ofproto, 0)); | |
522 | } | |
523 | ||
524 | static void | |
525 | xlate_xbundle_init(struct xlate_cfg *xcfg, struct xbundle *xbundle) | |
526 | { | |
527 | list_init(&xbundle->xports); | |
528 | list_insert(&xbundle->xbridge->xbundles, &xbundle->list_node); | |
529 | hmap_insert(&xcfg->xbundles, &xbundle->hmap_node, | |
530 | hash_pointer(xbundle->ofbundle, 0)); | |
531 | } | |
532 | ||
533 | static void | |
534 | xlate_xport_init(struct xlate_cfg *xcfg, struct xport *xport) | |
535 | { | |
536 | hmap_init(&xport->skb_priorities); | |
537 | hmap_insert(&xcfg->xports, &xport->hmap_node, | |
538 | hash_pointer(xport->ofport, 0)); | |
539 | hmap_insert(&xport->xbridge->xports, &xport->ofp_node, | |
540 | hash_ofp_port(xport->ofp_port)); | |
541 | } | |
542 | ||
543 | static void | |
544 | xlate_xbridge_set(struct xbridge *xbridge, | |
545 | struct dpif *dpif, | |
ec89fc6f | 546 | const struct mac_learning *ml, struct stp *stp, |
9efd308e | 547 | struct rstp *rstp, const struct mcast_snooping *ms, |
ec89fc6f | 548 | const struct mbridge *mbridge, |
46c88433 | 549 | const struct dpif_sflow *sflow, |
ce3955be | 550 | const struct dpif_ipfix *ipfix, |
2f47cdf4 | 551 | const struct netflow *netflow, |
4b97b70d | 552 | bool forward_bpdu, bool has_in_band, |
b440dd8c | 553 | const struct dpif_backer_support *support) |
46c88433 | 554 | { |
46c88433 EJ |
555 | if (xbridge->ml != ml) { |
556 | mac_learning_unref(xbridge->ml); | |
557 | xbridge->ml = mac_learning_ref(ml); | |
558 | } | |
559 | ||
6d95c4e8 FL |
560 | if (xbridge->ms != ms) { |
561 | mcast_snooping_unref(xbridge->ms); | |
562 | xbridge->ms = mcast_snooping_ref(ms); | |
563 | } | |
564 | ||
46c88433 EJ |
565 | if (xbridge->mbridge != mbridge) { |
566 | mbridge_unref(xbridge->mbridge); | |
567 | xbridge->mbridge = mbridge_ref(mbridge); | |
568 | } | |
569 | ||
570 | if (xbridge->sflow != sflow) { | |
571 | dpif_sflow_unref(xbridge->sflow); | |
572 | xbridge->sflow = dpif_sflow_ref(sflow); | |
573 | } | |
574 | ||
575 | if (xbridge->ipfix != ipfix) { | |
576 | dpif_ipfix_unref(xbridge->ipfix); | |
577 | xbridge->ipfix = dpif_ipfix_ref(ipfix); | |
578 | } | |
579 | ||
9d189a50 EJ |
580 | if (xbridge->stp != stp) { |
581 | stp_unref(xbridge->stp); | |
582 | xbridge->stp = stp_ref(stp); | |
583 | } | |
584 | ||
9efd308e DV |
585 | if (xbridge->rstp != rstp) { |
586 | rstp_unref(xbridge->rstp); | |
587 | xbridge->rstp = rstp_ref(rstp); | |
588 | } | |
589 | ||
ce3955be EJ |
590 | if (xbridge->netflow != netflow) { |
591 | netflow_unref(xbridge->netflow); | |
592 | xbridge->netflow = netflow_ref(netflow); | |
593 | } | |
594 | ||
89a8a7f0 | 595 | xbridge->dpif = dpif; |
46c88433 EJ |
596 | xbridge->forward_bpdu = forward_bpdu; |
597 | xbridge->has_in_band = has_in_band; | |
b440dd8c | 598 | xbridge->support = *support; |
46c88433 EJ |
599 | } |
600 | ||
84f0f298 RW |
601 | static void |
602 | xlate_xbundle_set(struct xbundle *xbundle, | |
603 | enum port_vlan_mode vlan_mode, int vlan, | |
604 | unsigned long *trunks, bool use_priority_tags, | |
605 | const struct bond *bond, const struct lacp *lacp, | |
606 | bool floodable) | |
607 | { | |
608 | ovs_assert(xbundle->xbridge); | |
609 | ||
610 | xbundle->vlan_mode = vlan_mode; | |
611 | xbundle->vlan = vlan; | |
612 | xbundle->trunks = trunks; | |
613 | xbundle->use_priority_tags = use_priority_tags; | |
614 | xbundle->floodable = floodable; | |
615 | ||
616 | if (xbundle->bond != bond) { | |
617 | bond_unref(xbundle->bond); | |
618 | xbundle->bond = bond_ref(bond); | |
619 | } | |
620 | ||
621 | if (xbundle->lacp != lacp) { | |
622 | lacp_unref(xbundle->lacp); | |
623 | xbundle->lacp = lacp_ref(lacp); | |
624 | } | |
625 | } | |
626 | ||
627 | static void | |
628 | xlate_xport_set(struct xport *xport, odp_port_t odp_port, | |
629 | const struct netdev *netdev, const struct cfm *cfm, | |
0477baa9 | 630 | const struct bfd *bfd, const struct lldp *lldp, int stp_port_no, |
f025bcb7 | 631 | const struct rstp_port* rstp_port, |
84f0f298 RW |
632 | enum ofputil_port_config config, enum ofputil_port_state state, |
633 | bool is_tunnel, bool may_enable) | |
634 | { | |
635 | xport->config = config; | |
636 | xport->state = state; | |
637 | xport->stp_port_no = stp_port_no; | |
638 | xport->is_tunnel = is_tunnel; | |
639 | xport->may_enable = may_enable; | |
640 | xport->odp_port = odp_port; | |
641 | ||
f025bcb7 JR |
642 | if (xport->rstp_port != rstp_port) { |
643 | rstp_port_unref(xport->rstp_port); | |
644 | xport->rstp_port = rstp_port_ref(rstp_port); | |
645 | } | |
646 | ||
84f0f298 RW |
647 | if (xport->cfm != cfm) { |
648 | cfm_unref(xport->cfm); | |
649 | xport->cfm = cfm_ref(cfm); | |
650 | } | |
651 | ||
652 | if (xport->bfd != bfd) { | |
653 | bfd_unref(xport->bfd); | |
654 | xport->bfd = bfd_ref(bfd); | |
655 | } | |
656 | ||
0477baa9 DF |
657 | if (xport->lldp != lldp) { |
658 | lldp_unref(xport->lldp); | |
659 | xport->lldp = lldp_ref(lldp); | |
660 | } | |
661 | ||
84f0f298 RW |
662 | if (xport->netdev != netdev) { |
663 | netdev_close(xport->netdev); | |
664 | xport->netdev = netdev_ref(netdev); | |
665 | } | |
666 | } | |
667 | ||
668 | static void | |
669 | xlate_xbridge_copy(struct xbridge *xbridge) | |
670 | { | |
671 | struct xbundle *xbundle; | |
672 | struct xport *xport; | |
673 | struct xbridge *new_xbridge = xzalloc(sizeof *xbridge); | |
674 | new_xbridge->ofproto = xbridge->ofproto; | |
675 | new_xbridge->name = xstrdup(xbridge->name); | |
676 | xlate_xbridge_init(new_xcfg, new_xbridge); | |
677 | ||
678 | xlate_xbridge_set(new_xbridge, | |
34dd0d78 | 679 | xbridge->dpif, xbridge->ml, xbridge->stp, |
9efd308e DV |
680 | xbridge->rstp, xbridge->ms, xbridge->mbridge, |
681 | xbridge->sflow, xbridge->ipfix, xbridge->netflow, | |
b440dd8c JS |
682 | xbridge->forward_bpdu, xbridge->has_in_band, |
683 | &xbridge->support); | |
84f0f298 RW |
684 | LIST_FOR_EACH (xbundle, list_node, &xbridge->xbundles) { |
685 | xlate_xbundle_copy(new_xbridge, xbundle); | |
686 | } | |
687 | ||
688 | /* Copy xports which are not part of a xbundle */ | |
689 | HMAP_FOR_EACH (xport, ofp_node, &xbridge->xports) { | |
690 | if (!xport->xbundle) { | |
691 | xlate_xport_copy(new_xbridge, NULL, xport); | |
692 | } | |
693 | } | |
694 | } | |
695 | ||
696 | static void | |
697 | xlate_xbundle_copy(struct xbridge *xbridge, struct xbundle *xbundle) | |
698 | { | |
699 | struct xport *xport; | |
700 | struct xbundle *new_xbundle = xzalloc(sizeof *xbundle); | |
701 | new_xbundle->ofbundle = xbundle->ofbundle; | |
702 | new_xbundle->xbridge = xbridge; | |
703 | new_xbundle->name = xstrdup(xbundle->name); | |
704 | xlate_xbundle_init(new_xcfg, new_xbundle); | |
705 | ||
706 | xlate_xbundle_set(new_xbundle, xbundle->vlan_mode, | |
707 | xbundle->vlan, xbundle->trunks, | |
708 | xbundle->use_priority_tags, xbundle->bond, xbundle->lacp, | |
709 | xbundle->floodable); | |
710 | LIST_FOR_EACH (xport, bundle_node, &xbundle->xports) { | |
711 | xlate_xport_copy(xbridge, new_xbundle, xport); | |
712 | } | |
713 | } | |
714 | ||
715 | static void | |
716 | xlate_xport_copy(struct xbridge *xbridge, struct xbundle *xbundle, | |
717 | struct xport *xport) | |
718 | { | |
719 | struct skb_priority_to_dscp *pdscp, *new_pdscp; | |
720 | struct xport *new_xport = xzalloc(sizeof *xport); | |
721 | new_xport->ofport = xport->ofport; | |
722 | new_xport->ofp_port = xport->ofp_port; | |
723 | new_xport->xbridge = xbridge; | |
724 | xlate_xport_init(new_xcfg, new_xport); | |
725 | ||
726 | xlate_xport_set(new_xport, xport->odp_port, xport->netdev, xport->cfm, | |
0477baa9 DF |
727 | xport->bfd, xport->lldp, xport->stp_port_no, |
728 | xport->rstp_port, xport->config, xport->state, | |
729 | xport->is_tunnel, xport->may_enable); | |
84f0f298 RW |
730 | |
731 | if (xport->peer) { | |
732 | struct xport *peer = xport_lookup(new_xcfg, xport->peer->ofport); | |
733 | if (peer) { | |
734 | new_xport->peer = peer; | |
735 | new_xport->peer->peer = new_xport; | |
736 | } | |
737 | } | |
738 | ||
739 | if (xbundle) { | |
740 | new_xport->xbundle = xbundle; | |
741 | list_insert(&new_xport->xbundle->xports, &new_xport->bundle_node); | |
742 | } | |
743 | ||
744 | HMAP_FOR_EACH (pdscp, hmap_node, &xport->skb_priorities) { | |
745 | new_pdscp = xmalloc(sizeof *pdscp); | |
746 | new_pdscp->skb_priority = pdscp->skb_priority; | |
747 | new_pdscp->dscp = pdscp->dscp; | |
748 | hmap_insert(&new_xport->skb_priorities, &new_pdscp->hmap_node, | |
749 | hash_int(new_pdscp->skb_priority, 0)); | |
750 | } | |
751 | } | |
752 | ||
753 | /* Sets the current xlate configuration to new_xcfg and frees the old xlate | |
754 | * configuration in xcfgp. | |
755 | * | |
756 | * This needs to be called after editing the xlate configuration. | |
757 | * | |
758 | * Functions that edit the new xlate configuration are | |
759 | * xlate_<ofport/bundle/ofport>_set and xlate_<ofport/bundle/ofport>_remove. | |
760 | * | |
761 | * A sample workflow: | |
762 | * | |
763 | * xlate_txn_start(); | |
764 | * ... | |
765 | * edit_xlate_configuration(); | |
766 | * ... | |
767 | * xlate_txn_commit(); */ | |
46c88433 | 768 | void |
84f0f298 RW |
769 | xlate_txn_commit(void) |
770 | { | |
771 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
772 | ||
773 | ovsrcu_set(&xcfgp, new_xcfg); | |
40a9c4c2 AW |
774 | ovsrcu_synchronize(); |
775 | xlate_xcfg_free(xcfg); | |
84f0f298 RW |
776 | new_xcfg = NULL; |
777 | } | |
778 | ||
779 | /* Copies the current xlate configuration in xcfgp to new_xcfg. | |
780 | * | |
781 | * This needs to be called prior to editing the xlate configuration. */ | |
782 | void | |
783 | xlate_txn_start(void) | |
784 | { | |
785 | struct xbridge *xbridge; | |
786 | struct xlate_cfg *xcfg; | |
787 | ||
788 | ovs_assert(!new_xcfg); | |
789 | ||
790 | new_xcfg = xmalloc(sizeof *new_xcfg); | |
791 | hmap_init(&new_xcfg->xbridges); | |
792 | hmap_init(&new_xcfg->xbundles); | |
793 | hmap_init(&new_xcfg->xports); | |
794 | ||
795 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
796 | if (!xcfg) { | |
797 | return; | |
798 | } | |
799 | ||
800 | HMAP_FOR_EACH (xbridge, hmap_node, &xcfg->xbridges) { | |
801 | xlate_xbridge_copy(xbridge); | |
802 | } | |
803 | } | |
804 | ||
805 | ||
806 | static void | |
807 | xlate_xcfg_free(struct xlate_cfg *xcfg) | |
808 | { | |
809 | struct xbridge *xbridge, *next_xbridge; | |
810 | ||
811 | if (!xcfg) { | |
812 | return; | |
813 | } | |
814 | ||
815 | HMAP_FOR_EACH_SAFE (xbridge, next_xbridge, hmap_node, &xcfg->xbridges) { | |
816 | xlate_xbridge_remove(xcfg, xbridge); | |
817 | } | |
818 | ||
819 | hmap_destroy(&xcfg->xbridges); | |
820 | hmap_destroy(&xcfg->xbundles); | |
821 | hmap_destroy(&xcfg->xports); | |
822 | free(xcfg); | |
823 | } | |
824 | ||
825 | void | |
826 | xlate_ofproto_set(struct ofproto_dpif *ofproto, const char *name, | |
34dd0d78 | 827 | struct dpif *dpif, |
84f0f298 | 828 | const struct mac_learning *ml, struct stp *stp, |
9efd308e | 829 | struct rstp *rstp, const struct mcast_snooping *ms, |
84f0f298 RW |
830 | const struct mbridge *mbridge, |
831 | const struct dpif_sflow *sflow, | |
832 | const struct dpif_ipfix *ipfix, | |
2f47cdf4 | 833 | const struct netflow *netflow, |
b440dd8c JS |
834 | bool forward_bpdu, bool has_in_band, |
835 | const struct dpif_backer_support *support) | |
84f0f298 RW |
836 | { |
837 | struct xbridge *xbridge; | |
838 | ||
839 | ovs_assert(new_xcfg); | |
840 | ||
841 | xbridge = xbridge_lookup(new_xcfg, ofproto); | |
842 | if (!xbridge) { | |
843 | xbridge = xzalloc(sizeof *xbridge); | |
844 | xbridge->ofproto = ofproto; | |
845 | ||
846 | xlate_xbridge_init(new_xcfg, xbridge); | |
847 | } | |
848 | ||
849 | free(xbridge->name); | |
850 | xbridge->name = xstrdup(name); | |
851 | ||
34dd0d78 | 852 | xlate_xbridge_set(xbridge, dpif, ml, stp, rstp, ms, mbridge, sflow, ipfix, |
b440dd8c | 853 | netflow, forward_bpdu, has_in_band, support); |
84f0f298 RW |
854 | } |
855 | ||
856 | static void | |
857 | xlate_xbridge_remove(struct xlate_cfg *xcfg, struct xbridge *xbridge) | |
46c88433 | 858 | { |
46c88433 EJ |
859 | struct xbundle *xbundle, *next_xbundle; |
860 | struct xport *xport, *next_xport; | |
861 | ||
862 | if (!xbridge) { | |
863 | return; | |
864 | } | |
865 | ||
866 | HMAP_FOR_EACH_SAFE (xport, next_xport, ofp_node, &xbridge->xports) { | |
84f0f298 | 867 | xlate_xport_remove(xcfg, xport); |
46c88433 EJ |
868 | } |
869 | ||
870 | LIST_FOR_EACH_SAFE (xbundle, next_xbundle, list_node, &xbridge->xbundles) { | |
84f0f298 | 871 | xlate_xbundle_remove(xcfg, xbundle); |
46c88433 EJ |
872 | } |
873 | ||
84f0f298 | 874 | hmap_remove(&xcfg->xbridges, &xbridge->hmap_node); |
795cc5c1 | 875 | mac_learning_unref(xbridge->ml); |
6d95c4e8 | 876 | mcast_snooping_unref(xbridge->ms); |
795cc5c1 EJ |
877 | mbridge_unref(xbridge->mbridge); |
878 | dpif_sflow_unref(xbridge->sflow); | |
879 | dpif_ipfix_unref(xbridge->ipfix); | |
880 | stp_unref(xbridge->stp); | |
9efd308e | 881 | rstp_unref(xbridge->rstp); |
795cc5c1 | 882 | hmap_destroy(&xbridge->xports); |
46c88433 EJ |
883 | free(xbridge->name); |
884 | free(xbridge); | |
885 | } | |
886 | ||
84f0f298 RW |
887 | void |
888 | xlate_remove_ofproto(struct ofproto_dpif *ofproto) | |
889 | { | |
890 | struct xbridge *xbridge; | |
891 | ||
892 | ovs_assert(new_xcfg); | |
893 | ||
894 | xbridge = xbridge_lookup(new_xcfg, ofproto); | |
895 | xlate_xbridge_remove(new_xcfg, xbridge); | |
896 | } | |
897 | ||
46c88433 EJ |
898 | void |
899 | xlate_bundle_set(struct ofproto_dpif *ofproto, struct ofbundle *ofbundle, | |
900 | const char *name, enum port_vlan_mode vlan_mode, int vlan, | |
901 | unsigned long *trunks, bool use_priority_tags, | |
902 | const struct bond *bond, const struct lacp *lacp, | |
903 | bool floodable) | |
904 | { | |
84f0f298 | 905 | struct xbundle *xbundle; |
46c88433 | 906 | |
84f0f298 RW |
907 | ovs_assert(new_xcfg); |
908 | ||
909 | xbundle = xbundle_lookup(new_xcfg, ofbundle); | |
46c88433 EJ |
910 | if (!xbundle) { |
911 | xbundle = xzalloc(sizeof *xbundle); | |
912 | xbundle->ofbundle = ofbundle; | |
84f0f298 | 913 | xbundle->xbridge = xbridge_lookup(new_xcfg, ofproto); |
46c88433 | 914 | |
84f0f298 | 915 | xlate_xbundle_init(new_xcfg, xbundle); |
46c88433 EJ |
916 | } |
917 | ||
46c88433 EJ |
918 | free(xbundle->name); |
919 | xbundle->name = xstrdup(name); | |
920 | ||
84f0f298 RW |
921 | xlate_xbundle_set(xbundle, vlan_mode, vlan, trunks, |
922 | use_priority_tags, bond, lacp, floodable); | |
46c88433 EJ |
923 | } |
924 | ||
84f0f298 RW |
925 | static void |
926 | xlate_xbundle_remove(struct xlate_cfg *xcfg, struct xbundle *xbundle) | |
46c88433 | 927 | { |
5f03c983 | 928 | struct xport *xport; |
46c88433 EJ |
929 | |
930 | if (!xbundle) { | |
931 | return; | |
932 | } | |
933 | ||
5f03c983 | 934 | LIST_FOR_EACH_POP (xport, bundle_node, &xbundle->xports) { |
46c88433 EJ |
935 | xport->xbundle = NULL; |
936 | } | |
937 | ||
84f0f298 | 938 | hmap_remove(&xcfg->xbundles, &xbundle->hmap_node); |
46c88433 EJ |
939 | list_remove(&xbundle->list_node); |
940 | bond_unref(xbundle->bond); | |
941 | lacp_unref(xbundle->lacp); | |
942 | free(xbundle->name); | |
943 | free(xbundle); | |
944 | } | |
945 | ||
84f0f298 RW |
946 | void |
947 | xlate_bundle_remove(struct ofbundle *ofbundle) | |
948 | { | |
949 | struct xbundle *xbundle; | |
950 | ||
951 | ovs_assert(new_xcfg); | |
952 | ||
953 | xbundle = xbundle_lookup(new_xcfg, ofbundle); | |
954 | xlate_xbundle_remove(new_xcfg, xbundle); | |
955 | } | |
956 | ||
46c88433 EJ |
957 | void |
958 | xlate_ofport_set(struct ofproto_dpif *ofproto, struct ofbundle *ofbundle, | |
959 | struct ofport_dpif *ofport, ofp_port_t ofp_port, | |
960 | odp_port_t odp_port, const struct netdev *netdev, | |
961 | const struct cfm *cfm, const struct bfd *bfd, | |
0477baa9 DF |
962 | const struct lldp *lldp, struct ofport_dpif *peer, |
963 | int stp_port_no, const struct rstp_port *rstp_port, | |
55954f6e | 964 | const struct ofproto_port_queue *qdscp_list, size_t n_qdscp, |
dd8cd4b4 SH |
965 | enum ofputil_port_config config, |
966 | enum ofputil_port_state state, bool is_tunnel, | |
9d189a50 | 967 | bool may_enable) |
46c88433 | 968 | { |
55954f6e | 969 | size_t i; |
84f0f298 RW |
970 | struct xport *xport; |
971 | ||
972 | ovs_assert(new_xcfg); | |
46c88433 | 973 | |
84f0f298 | 974 | xport = xport_lookup(new_xcfg, ofport); |
46c88433 EJ |
975 | if (!xport) { |
976 | xport = xzalloc(sizeof *xport); | |
977 | xport->ofport = ofport; | |
84f0f298 | 978 | xport->xbridge = xbridge_lookup(new_xcfg, ofproto); |
46c88433 EJ |
979 | xport->ofp_port = ofp_port; |
980 | ||
84f0f298 | 981 | xlate_xport_init(new_xcfg, xport); |
46c88433 EJ |
982 | } |
983 | ||
984 | ovs_assert(xport->ofp_port == ofp_port); | |
985 | ||
0477baa9 DF |
986 | xlate_xport_set(xport, odp_port, netdev, cfm, bfd, lldp, |
987 | stp_port_no, rstp_port, config, state, is_tunnel, | |
988 | may_enable); | |
46c88433 EJ |
989 | |
990 | if (xport->peer) { | |
991 | xport->peer->peer = NULL; | |
992 | } | |
84f0f298 | 993 | xport->peer = xport_lookup(new_xcfg, peer); |
46c88433 EJ |
994 | if (xport->peer) { |
995 | xport->peer->peer = xport; | |
996 | } | |
997 | ||
998 | if (xport->xbundle) { | |
999 | list_remove(&xport->bundle_node); | |
1000 | } | |
84f0f298 | 1001 | xport->xbundle = xbundle_lookup(new_xcfg, ofbundle); |
46c88433 EJ |
1002 | if (xport->xbundle) { |
1003 | list_insert(&xport->xbundle->xports, &xport->bundle_node); | |
1004 | } | |
55954f6e EJ |
1005 | |
1006 | clear_skb_priorities(xport); | |
1007 | for (i = 0; i < n_qdscp; i++) { | |
1008 | struct skb_priority_to_dscp *pdscp; | |
1009 | uint32_t skb_priority; | |
1010 | ||
89a8a7f0 EJ |
1011 | if (dpif_queue_to_priority(xport->xbridge->dpif, qdscp_list[i].queue, |
1012 | &skb_priority)) { | |
55954f6e EJ |
1013 | continue; |
1014 | } | |
1015 | ||
1016 | pdscp = xmalloc(sizeof *pdscp); | |
1017 | pdscp->skb_priority = skb_priority; | |
1018 | pdscp->dscp = (qdscp_list[i].dscp << 2) & IP_DSCP_MASK; | |
1019 | hmap_insert(&xport->skb_priorities, &pdscp->hmap_node, | |
1020 | hash_int(pdscp->skb_priority, 0)); | |
1021 | } | |
46c88433 EJ |
1022 | } |
1023 | ||
84f0f298 RW |
1024 | static void |
1025 | xlate_xport_remove(struct xlate_cfg *xcfg, struct xport *xport) | |
46c88433 | 1026 | { |
46c88433 EJ |
1027 | if (!xport) { |
1028 | return; | |
1029 | } | |
1030 | ||
1031 | if (xport->peer) { | |
1032 | xport->peer->peer = NULL; | |
1033 | xport->peer = NULL; | |
1034 | } | |
1035 | ||
e621a12d EJ |
1036 | if (xport->xbundle) { |
1037 | list_remove(&xport->bundle_node); | |
1038 | } | |
1039 | ||
55954f6e EJ |
1040 | clear_skb_priorities(xport); |
1041 | hmap_destroy(&xport->skb_priorities); | |
1042 | ||
84f0f298 | 1043 | hmap_remove(&xcfg->xports, &xport->hmap_node); |
46c88433 EJ |
1044 | hmap_remove(&xport->xbridge->xports, &xport->ofp_node); |
1045 | ||
1046 | netdev_close(xport->netdev); | |
f025bcb7 | 1047 | rstp_port_unref(xport->rstp_port); |
46c88433 EJ |
1048 | cfm_unref(xport->cfm); |
1049 | bfd_unref(xport->bfd); | |
0477baa9 | 1050 | lldp_unref(xport->lldp); |
46c88433 EJ |
1051 | free(xport); |
1052 | } | |
1053 | ||
84f0f298 RW |
1054 | void |
1055 | xlate_ofport_remove(struct ofport_dpif *ofport) | |
1056 | { | |
1057 | struct xport *xport; | |
1058 | ||
1059 | ovs_assert(new_xcfg); | |
1060 | ||
1061 | xport = xport_lookup(new_xcfg, ofport); | |
1062 | xlate_xport_remove(new_xcfg, xport); | |
1063 | } | |
1064 | ||
ef377a58 JR |
1065 | static struct ofproto_dpif * |
1066 | xlate_lookup_ofproto_(const struct dpif_backer *backer, const struct flow *flow, | |
1067 | ofp_port_t *ofp_in_port, const struct xport **xportp) | |
1068 | { | |
e672ff9b | 1069 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
ef377a58 | 1070 | const struct xport *xport; |
f9038ef6 | 1071 | |
e672ff9b JR |
1072 | xport = xport_lookup(xcfg, tnl_port_should_receive(flow) |
1073 | ? tnl_port_receive(flow) | |
1074 | : odp_port_to_ofport(backer, flow->in_port.odp_port)); | |
1075 | if (OVS_UNLIKELY(!xport)) { | |
1076 | return NULL; | |
ef377a58 | 1077 | } |
e672ff9b | 1078 | *xportp = xport; |
f9038ef6 | 1079 | if (ofp_in_port) { |
e672ff9b | 1080 | *ofp_in_port = xport->ofp_port; |
f9038ef6 | 1081 | } |
e672ff9b | 1082 | return xport->xbridge->ofproto; |
ef377a58 JR |
1083 | } |
1084 | ||
1085 | /* Given a datapath and flow metadata ('backer', and 'flow' respectively) | |
1086 | * returns the corresponding struct ofproto_dpif and OpenFlow port number. */ | |
1087 | struct ofproto_dpif * | |
1088 | xlate_lookup_ofproto(const struct dpif_backer *backer, const struct flow *flow, | |
1089 | ofp_port_t *ofp_in_port) | |
1090 | { | |
1091 | const struct xport *xport; | |
1092 | ||
1093 | return xlate_lookup_ofproto_(backer, flow, ofp_in_port, &xport); | |
1094 | } | |
1095 | ||
cc377352 | 1096 | /* Given a datapath and flow metadata ('backer', and 'flow' respectively), |
ef377a58 | 1097 | * optionally populates 'ofproto' with the ofproto_dpif, 'ofp_in_port' with the |
cc377352 | 1098 | * openflow in_port, and 'ipfix', 'sflow', and 'netflow' with the appropriate |
dcc2c6cd JR |
1099 | * handles for those protocols if they're enabled. Caller may use the returned |
1100 | * pointers until quiescing, for longer term use additional references must | |
1101 | * be taken. | |
8449c4d6 | 1102 | * |
f9038ef6 | 1103 | * Returns 0 if successful, ENODEV if the parsed flow has no associated ofproto. |
ef377a58 | 1104 | */ |
8449c4d6 | 1105 | int |
5c476ea3 JR |
1106 | xlate_lookup(const struct dpif_backer *backer, const struct flow *flow, |
1107 | struct ofproto_dpif **ofprotop, struct dpif_ipfix **ipfix, | |
1108 | struct dpif_sflow **sflow, struct netflow **netflow, | |
1109 | ofp_port_t *ofp_in_port) | |
8449c4d6 | 1110 | { |
ef377a58 | 1111 | struct ofproto_dpif *ofproto; |
84f0f298 | 1112 | const struct xport *xport; |
8449c4d6 | 1113 | |
ef377a58 | 1114 | ofproto = xlate_lookup_ofproto_(backer, flow, ofp_in_port, &xport); |
8449c4d6 | 1115 | |
f9038ef6 | 1116 | if (!ofproto) { |
cc377352 | 1117 | return ENODEV; |
8449c4d6 | 1118 | } |
8449c4d6 | 1119 | |
ef377a58 JR |
1120 | if (ofprotop) { |
1121 | *ofprotop = ofproto; | |
8449c4d6 EJ |
1122 | } |
1123 | ||
1dfdb9b3 | 1124 | if (ipfix) { |
f9038ef6 | 1125 | *ipfix = xport ? xport->xbridge->ipfix : NULL; |
1dfdb9b3 EJ |
1126 | } |
1127 | ||
1128 | if (sflow) { | |
f9038ef6 | 1129 | *sflow = xport ? xport->xbridge->sflow : NULL; |
1dfdb9b3 EJ |
1130 | } |
1131 | ||
1132 | if (netflow) { | |
f9038ef6 | 1133 | *netflow = xport ? xport->xbridge->netflow : NULL; |
1dfdb9b3 | 1134 | } |
f9038ef6 | 1135 | |
cc377352 | 1136 | return 0; |
8449c4d6 EJ |
1137 | } |
1138 | ||
46c88433 | 1139 | static struct xbridge * |
84f0f298 | 1140 | xbridge_lookup(struct xlate_cfg *xcfg, const struct ofproto_dpif *ofproto) |
46c88433 | 1141 | { |
84f0f298 | 1142 | struct hmap *xbridges; |
46c88433 EJ |
1143 | struct xbridge *xbridge; |
1144 | ||
84f0f298 | 1145 | if (!ofproto || !xcfg) { |
5e6af486 EJ |
1146 | return NULL; |
1147 | } | |
1148 | ||
84f0f298 RW |
1149 | xbridges = &xcfg->xbridges; |
1150 | ||
46c88433 | 1151 | HMAP_FOR_EACH_IN_BUCKET (xbridge, hmap_node, hash_pointer(ofproto, 0), |
84f0f298 | 1152 | xbridges) { |
46c88433 EJ |
1153 | if (xbridge->ofproto == ofproto) { |
1154 | return xbridge; | |
1155 | } | |
1156 | } | |
1157 | return NULL; | |
1158 | } | |
1159 | ||
1160 | static struct xbundle * | |
84f0f298 | 1161 | xbundle_lookup(struct xlate_cfg *xcfg, const struct ofbundle *ofbundle) |
46c88433 | 1162 | { |
84f0f298 | 1163 | struct hmap *xbundles; |
46c88433 EJ |
1164 | struct xbundle *xbundle; |
1165 | ||
84f0f298 | 1166 | if (!ofbundle || !xcfg) { |
5e6af486 EJ |
1167 | return NULL; |
1168 | } | |
1169 | ||
84f0f298 RW |
1170 | xbundles = &xcfg->xbundles; |
1171 | ||
46c88433 | 1172 | HMAP_FOR_EACH_IN_BUCKET (xbundle, hmap_node, hash_pointer(ofbundle, 0), |
84f0f298 | 1173 | xbundles) { |
46c88433 EJ |
1174 | if (xbundle->ofbundle == ofbundle) { |
1175 | return xbundle; | |
1176 | } | |
1177 | } | |
1178 | return NULL; | |
1179 | } | |
1180 | ||
1181 | static struct xport * | |
84f0f298 | 1182 | xport_lookup(struct xlate_cfg *xcfg, const struct ofport_dpif *ofport) |
46c88433 | 1183 | { |
84f0f298 | 1184 | struct hmap *xports; |
46c88433 EJ |
1185 | struct xport *xport; |
1186 | ||
84f0f298 | 1187 | if (!ofport || !xcfg) { |
5e6af486 EJ |
1188 | return NULL; |
1189 | } | |
1190 | ||
84f0f298 RW |
1191 | xports = &xcfg->xports; |
1192 | ||
46c88433 | 1193 | HMAP_FOR_EACH_IN_BUCKET (xport, hmap_node, hash_pointer(ofport, 0), |
84f0f298 | 1194 | xports) { |
46c88433 EJ |
1195 | if (xport->ofport == ofport) { |
1196 | return xport; | |
1197 | } | |
1198 | } | |
1199 | return NULL; | |
1200 | } | |
1201 | ||
40085e56 EJ |
1202 | static struct stp_port * |
1203 | xport_get_stp_port(const struct xport *xport) | |
1204 | { | |
92cf817b | 1205 | return xport->xbridge->stp && xport->stp_port_no != -1 |
40085e56 EJ |
1206 | ? stp_get_port(xport->xbridge->stp, xport->stp_port_no) |
1207 | : NULL; | |
1208 | } | |
9d189a50 | 1209 | |
0d1cee12 | 1210 | static bool |
9d189a50 EJ |
1211 | xport_stp_learn_state(const struct xport *xport) |
1212 | { | |
40085e56 | 1213 | struct stp_port *sp = xport_get_stp_port(xport); |
4b5f1996 DV |
1214 | return sp |
1215 | ? stp_learn_in_state(stp_port_get_state(sp)) | |
1216 | : true; | |
9d189a50 EJ |
1217 | } |
1218 | ||
1219 | static bool | |
1220 | xport_stp_forward_state(const struct xport *xport) | |
1221 | { | |
40085e56 | 1222 | struct stp_port *sp = xport_get_stp_port(xport); |
4b5f1996 DV |
1223 | return sp |
1224 | ? stp_forward_in_state(stp_port_get_state(sp)) | |
1225 | : true; | |
9d189a50 EJ |
1226 | } |
1227 | ||
0d1cee12 | 1228 | static bool |
bacdb85a | 1229 | xport_stp_should_forward_bpdu(const struct xport *xport) |
0d1cee12 K |
1230 | { |
1231 | struct stp_port *sp = xport_get_stp_port(xport); | |
bacdb85a | 1232 | return stp_should_forward_bpdu(sp ? stp_port_get_state(sp) : STP_DISABLED); |
0d1cee12 K |
1233 | } |
1234 | ||
9d189a50 EJ |
1235 | /* Returns true if STP should process 'flow'. Sets fields in 'wc' that |
1236 | * were used to make the determination.*/ | |
1237 | static bool | |
1238 | stp_should_process_flow(const struct flow *flow, struct flow_wildcards *wc) | |
1239 | { | |
bbbca389 | 1240 | /* is_stp() also checks dl_type, but dl_type is always set in 'wc'. */ |
9d189a50 | 1241 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); |
bbbca389 | 1242 | return is_stp(flow); |
9d189a50 EJ |
1243 | } |
1244 | ||
1245 | static void | |
cf62fa4c | 1246 | stp_process_packet(const struct xport *xport, const struct dp_packet *packet) |
9d189a50 | 1247 | { |
40085e56 | 1248 | struct stp_port *sp = xport_get_stp_port(xport); |
cf62fa4c PS |
1249 | struct dp_packet payload = *packet; |
1250 | struct eth_header *eth = dp_packet_data(&payload); | |
9d189a50 EJ |
1251 | |
1252 | /* Sink packets on ports that have STP disabled when the bridge has | |
1253 | * STP enabled. */ | |
1254 | if (!sp || stp_port_get_state(sp) == STP_DISABLED) { | |
1255 | return; | |
1256 | } | |
1257 | ||
1258 | /* Trim off padding on payload. */ | |
cf62fa4c PS |
1259 | if (dp_packet_size(&payload) > ntohs(eth->eth_type) + ETH_HEADER_LEN) { |
1260 | dp_packet_set_size(&payload, ntohs(eth->eth_type) + ETH_HEADER_LEN); | |
9d189a50 EJ |
1261 | } |
1262 | ||
cf62fa4c PS |
1263 | if (dp_packet_try_pull(&payload, ETH_HEADER_LEN + LLC_HEADER_LEN)) { |
1264 | stp_received_bpdu(sp, dp_packet_data(&payload), dp_packet_size(&payload)); | |
9d189a50 EJ |
1265 | } |
1266 | } | |
1267 | ||
f025bcb7 JR |
1268 | static enum rstp_state |
1269 | xport_get_rstp_port_state(const struct xport *xport) | |
9efd308e | 1270 | { |
f025bcb7 JR |
1271 | return xport->rstp_port |
1272 | ? rstp_port_get_state(xport->rstp_port) | |
1273 | : RSTP_DISABLED; | |
9efd308e DV |
1274 | } |
1275 | ||
1276 | static bool | |
1277 | xport_rstp_learn_state(const struct xport *xport) | |
1278 | { | |
4b5f1996 DV |
1279 | return xport->xbridge->rstp && xport->rstp_port |
1280 | ? rstp_learn_in_state(xport_get_rstp_port_state(xport)) | |
1281 | : true; | |
9efd308e DV |
1282 | } |
1283 | ||
1284 | static bool | |
1285 | xport_rstp_forward_state(const struct xport *xport) | |
1286 | { | |
4b5f1996 DV |
1287 | return xport->xbridge->rstp && xport->rstp_port |
1288 | ? rstp_forward_in_state(xport_get_rstp_port_state(xport)) | |
1289 | : true; | |
9efd308e DV |
1290 | } |
1291 | ||
1292 | static bool | |
1293 | xport_rstp_should_manage_bpdu(const struct xport *xport) | |
1294 | { | |
f025bcb7 | 1295 | return rstp_should_manage_bpdu(xport_get_rstp_port_state(xport)); |
9efd308e DV |
1296 | } |
1297 | ||
1298 | static void | |
cf62fa4c | 1299 | rstp_process_packet(const struct xport *xport, const struct dp_packet *packet) |
9efd308e | 1300 | { |
cf62fa4c PS |
1301 | struct dp_packet payload = *packet; |
1302 | struct eth_header *eth = dp_packet_data(&payload); | |
9efd308e | 1303 | |
f025bcb7 JR |
1304 | /* Sink packets on ports that have no RSTP. */ |
1305 | if (!xport->rstp_port) { | |
9efd308e DV |
1306 | return; |
1307 | } | |
1308 | ||
1309 | /* Trim off padding on payload. */ | |
cf62fa4c PS |
1310 | if (dp_packet_size(&payload) > ntohs(eth->eth_type) + ETH_HEADER_LEN) { |
1311 | dp_packet_set_size(&payload, ntohs(eth->eth_type) + ETH_HEADER_LEN); | |
9efd308e DV |
1312 | } |
1313 | ||
cf62fa4c PS |
1314 | if (dp_packet_try_pull(&payload, ETH_HEADER_LEN + LLC_HEADER_LEN)) { |
1315 | rstp_port_received_bpdu(xport->rstp_port, dp_packet_data(&payload), | |
1316 | dp_packet_size(&payload)); | |
9efd308e DV |
1317 | } |
1318 | } | |
1319 | ||
46c88433 EJ |
1320 | static struct xport * |
1321 | get_ofp_port(const struct xbridge *xbridge, ofp_port_t ofp_port) | |
1322 | { | |
1323 | struct xport *xport; | |
1324 | ||
1325 | HMAP_FOR_EACH_IN_BUCKET (xport, ofp_node, hash_ofp_port(ofp_port), | |
1326 | &xbridge->xports) { | |
1327 | if (xport->ofp_port == ofp_port) { | |
1328 | return xport; | |
1329 | } | |
1330 | } | |
1331 | return NULL; | |
1332 | } | |
1333 | ||
1334 | static odp_port_t | |
1335 | ofp_port_to_odp_port(const struct xbridge *xbridge, ofp_port_t ofp_port) | |
1336 | { | |
1337 | const struct xport *xport = get_ofp_port(xbridge, ofp_port); | |
1338 | return xport ? xport->odp_port : ODPP_NONE; | |
1339 | } | |
1340 | ||
dd8cd4b4 SH |
1341 | static bool |
1342 | odp_port_is_alive(const struct xlate_ctx *ctx, ofp_port_t ofp_port) | |
1343 | { | |
086fa873 BP |
1344 | struct xport *xport = get_ofp_port(ctx->xbridge, ofp_port); |
1345 | return xport && xport->may_enable; | |
dd8cd4b4 SH |
1346 | } |
1347 | ||
1e684d7d | 1348 | static struct ofputil_bucket * |
dd8cd4b4 SH |
1349 | group_first_live_bucket(const struct xlate_ctx *, const struct group_dpif *, |
1350 | int depth); | |
1351 | ||
1352 | static bool | |
1353 | group_is_alive(const struct xlate_ctx *ctx, uint32_t group_id, int depth) | |
1354 | { | |
1355 | struct group_dpif *group; | |
dd8cd4b4 | 1356 | |
dc25893e AZ |
1357 | if (group_dpif_lookup(ctx->xbridge->ofproto, group_id, &group)) { |
1358 | struct ofputil_bucket *bucket; | |
dd8cd4b4 | 1359 | |
dc25893e AZ |
1360 | bucket = group_first_live_bucket(ctx, group, depth); |
1361 | group_dpif_unref(group); | |
1362 | return bucket == NULL; | |
1363 | } | |
dd8cd4b4 | 1364 | |
dc25893e | 1365 | return false; |
dd8cd4b4 SH |
1366 | } |
1367 | ||
1368 | #define MAX_LIVENESS_RECURSION 128 /* Arbitrary limit */ | |
1369 | ||
1370 | static bool | |
1371 | bucket_is_alive(const struct xlate_ctx *ctx, | |
1e684d7d | 1372 | struct ofputil_bucket *bucket, int depth) |
dd8cd4b4 SH |
1373 | { |
1374 | if (depth >= MAX_LIVENESS_RECURSION) { | |
1375 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); | |
1376 | ||
1377 | VLOG_WARN_RL(&rl, "bucket chaining exceeded %d links", | |
1378 | MAX_LIVENESS_RECURSION); | |
1379 | return false; | |
1380 | } | |
1381 | ||
fdb1999b AZ |
1382 | return (!ofputil_bucket_has_liveness(bucket) |
1383 | || (bucket->watch_port != OFPP_ANY | |
1384 | && odp_port_is_alive(ctx, bucket->watch_port)) | |
1385 | || (bucket->watch_group != OFPG_ANY | |
1386 | && group_is_alive(ctx, bucket->watch_group, depth + 1))); | |
dd8cd4b4 SH |
1387 | } |
1388 | ||
1e684d7d | 1389 | static struct ofputil_bucket * |
dd8cd4b4 SH |
1390 | group_first_live_bucket(const struct xlate_ctx *ctx, |
1391 | const struct group_dpif *group, int depth) | |
1392 | { | |
1393 | struct ofputil_bucket *bucket; | |
ca6ba700 | 1394 | const struct ovs_list *buckets; |
dd8cd4b4 SH |
1395 | |
1396 | group_dpif_get_buckets(group, &buckets); | |
1397 | LIST_FOR_EACH (bucket, list_node, buckets) { | |
1398 | if (bucket_is_alive(ctx, bucket, depth)) { | |
1399 | return bucket; | |
1400 | } | |
1401 | } | |
1402 | ||
1403 | return NULL; | |
1404 | } | |
1405 | ||
1e684d7d | 1406 | static struct ofputil_bucket * |
fe7e5749 SH |
1407 | group_best_live_bucket(const struct xlate_ctx *ctx, |
1408 | const struct group_dpif *group, | |
1409 | uint32_t basis) | |
1410 | { | |
1e684d7d | 1411 | struct ofputil_bucket *best_bucket = NULL; |
fe7e5749 SH |
1412 | uint32_t best_score = 0; |
1413 | int i = 0; | |
1414 | ||
1e684d7d | 1415 | struct ofputil_bucket *bucket; |
ca6ba700 | 1416 | const struct ovs_list *buckets; |
fe7e5749 SH |
1417 | |
1418 | group_dpif_get_buckets(group, &buckets); | |
1419 | LIST_FOR_EACH (bucket, list_node, buckets) { | |
1420 | if (bucket_is_alive(ctx, bucket, 0)) { | |
7cb279c2 | 1421 | uint32_t score = (hash_int(i, basis) & 0xffff) * bucket->weight; |
fe7e5749 SH |
1422 | if (score >= best_score) { |
1423 | best_bucket = bucket; | |
1424 | best_score = score; | |
1425 | } | |
1426 | } | |
1427 | i++; | |
1428 | } | |
1429 | ||
1430 | return best_bucket; | |
1431 | } | |
1432 | ||
9583bc14 | 1433 | static bool |
46c88433 | 1434 | xbundle_trunks_vlan(const struct xbundle *bundle, uint16_t vlan) |
9583bc14 EJ |
1435 | { |
1436 | return (bundle->vlan_mode != PORT_VLAN_ACCESS | |
1437 | && (!bundle->trunks || bitmap_is_set(bundle->trunks, vlan))); | |
1438 | } | |
1439 | ||
1440 | static bool | |
46c88433 EJ |
1441 | xbundle_includes_vlan(const struct xbundle *xbundle, uint16_t vlan) |
1442 | { | |
1443 | return vlan == xbundle->vlan || xbundle_trunks_vlan(xbundle, vlan); | |
1444 | } | |
1445 | ||
1446 | static mirror_mask_t | |
1447 | xbundle_mirror_out(const struct xbridge *xbridge, struct xbundle *xbundle) | |
1448 | { | |
1449 | return xbundle != &ofpp_none_bundle | |
1450 | ? mirror_bundle_out(xbridge->mbridge, xbundle->ofbundle) | |
1451 | : 0; | |
1452 | } | |
1453 | ||
1454 | static mirror_mask_t | |
1455 | xbundle_mirror_src(const struct xbridge *xbridge, struct xbundle *xbundle) | |
9583bc14 | 1456 | { |
46c88433 EJ |
1457 | return xbundle != &ofpp_none_bundle |
1458 | ? mirror_bundle_src(xbridge->mbridge, xbundle->ofbundle) | |
1459 | : 0; | |
9583bc14 EJ |
1460 | } |
1461 | ||
46c88433 EJ |
1462 | static mirror_mask_t |
1463 | xbundle_mirror_dst(const struct xbridge *xbridge, struct xbundle *xbundle) | |
9583bc14 | 1464 | { |
46c88433 EJ |
1465 | return xbundle != &ofpp_none_bundle |
1466 | ? mirror_bundle_dst(xbridge->mbridge, xbundle->ofbundle) | |
1467 | : 0; | |
1468 | } | |
1469 | ||
1470 | static struct xbundle * | |
1471 | lookup_input_bundle(const struct xbridge *xbridge, ofp_port_t in_port, | |
1472 | bool warn, struct xport **in_xportp) | |
1473 | { | |
1474 | struct xport *xport; | |
9583bc14 EJ |
1475 | |
1476 | /* Find the port and bundle for the received packet. */ | |
46c88433 EJ |
1477 | xport = get_ofp_port(xbridge, in_port); |
1478 | if (in_xportp) { | |
1479 | *in_xportp = xport; | |
9583bc14 | 1480 | } |
46c88433 EJ |
1481 | if (xport && xport->xbundle) { |
1482 | return xport->xbundle; | |
9583bc14 EJ |
1483 | } |
1484 | ||
6362203b YT |
1485 | /* Special-case OFPP_NONE (OF1.0) and OFPP_CONTROLLER (OF1.1+), |
1486 | * which a controller may use as the ingress port for traffic that | |
1487 | * it is sourcing. */ | |
1488 | if (in_port == OFPP_CONTROLLER || in_port == OFPP_NONE) { | |
9583bc14 EJ |
1489 | return &ofpp_none_bundle; |
1490 | } | |
1491 | ||
1492 | /* Odd. A few possible reasons here: | |
1493 | * | |
1494 | * - We deleted a port but there are still a few packets queued up | |
1495 | * from it. | |
1496 | * | |
1497 | * - Someone externally added a port (e.g. "ovs-dpctl add-if") that | |
1498 | * we don't know about. | |
1499 | * | |
1500 | * - The ofproto client didn't configure the port as part of a bundle. | |
1501 | * This is particularly likely to happen if a packet was received on the | |
1502 | * port after it was created, but before the client had a chance to | |
1503 | * configure its bundle. | |
1504 | */ | |
1505 | if (warn) { | |
1506 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
1507 | ||
1508 | VLOG_WARN_RL(&rl, "bridge %s: received packet on unknown " | |
46c88433 | 1509 | "port %"PRIu16, xbridge->name, in_port); |
9583bc14 EJ |
1510 | } |
1511 | return NULL; | |
1512 | } | |
1513 | ||
1514 | static void | |
1515 | add_mirror_actions(struct xlate_ctx *ctx, const struct flow *orig_flow) | |
1516 | { | |
46c88433 | 1517 | const struct xbridge *xbridge = ctx->xbridge; |
9583bc14 | 1518 | mirror_mask_t mirrors; |
46c88433 | 1519 | struct xbundle *in_xbundle; |
9583bc14 EJ |
1520 | uint16_t vlan; |
1521 | uint16_t vid; | |
cdf5d3a5 EJ |
1522 | |
1523 | mirrors = ctx->xout->mirrors; | |
1524 | ctx->xout->mirrors = 0; | |
9583bc14 | 1525 | |
46c88433 EJ |
1526 | in_xbundle = lookup_input_bundle(xbridge, orig_flow->in_port.ofp_port, |
1527 | ctx->xin->packet != NULL, NULL); | |
1528 | if (!in_xbundle) { | |
9583bc14 EJ |
1529 | return; |
1530 | } | |
46c88433 | 1531 | mirrors |= xbundle_mirror_src(xbridge, in_xbundle); |
9583bc14 EJ |
1532 | |
1533 | /* Drop frames on bundles reserved for mirroring. */ | |
46c88433 | 1534 | if (xbundle_mirror_out(xbridge, in_xbundle)) { |
9583bc14 EJ |
1535 | if (ctx->xin->packet != NULL) { |
1536 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
1537 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet received on port " | |
1538 | "%s, which is reserved exclusively for mirroring", | |
46c88433 | 1539 | ctx->xbridge->name, in_xbundle->name); |
9583bc14 | 1540 | } |
cc377352 | 1541 | ofpbuf_clear(ctx->xout->odp_actions); |
9583bc14 EJ |
1542 | return; |
1543 | } | |
1544 | ||
1545 | /* Check VLAN. */ | |
1546 | vid = vlan_tci_to_vid(orig_flow->vlan_tci); | |
46c88433 | 1547 | if (!input_vid_is_valid(vid, in_xbundle, ctx->xin->packet != NULL)) { |
9583bc14 EJ |
1548 | return; |
1549 | } | |
46c88433 | 1550 | vlan = input_vid_to_vlan(in_xbundle, vid); |
9583bc14 | 1551 | |
9583bc14 EJ |
1552 | if (!mirrors) { |
1553 | return; | |
1554 | } | |
1555 | ||
1556 | /* Restore the original packet before adding the mirror actions. */ | |
1557 | ctx->xin->flow = *orig_flow; | |
1558 | ||
1559 | while (mirrors) { | |
ec7ceaed EJ |
1560 | mirror_mask_t dup_mirrors; |
1561 | struct ofbundle *out; | |
1562 | unsigned long *vlans; | |
1563 | bool vlan_mirrored; | |
1564 | bool has_mirror; | |
1565 | int out_vlan; | |
1566 | ||
4b6ab2b0 | 1567 | has_mirror = mirror_get(xbridge->mbridge, raw_ctz(mirrors), |
ec7ceaed EJ |
1568 | &vlans, &dup_mirrors, &out, &out_vlan); |
1569 | ovs_assert(has_mirror); | |
1570 | ||
1571 | if (vlans) { | |
9583bc14 EJ |
1572 | ctx->xout->wc.masks.vlan_tci |= htons(VLAN_CFI | VLAN_VID_MASK); |
1573 | } | |
ec7ceaed EJ |
1574 | vlan_mirrored = !vlans || bitmap_is_set(vlans, vlan); |
1575 | free(vlans); | |
9583bc14 | 1576 | |
ec7ceaed | 1577 | if (!vlan_mirrored) { |
9583bc14 EJ |
1578 | mirrors = zero_rightmost_1bit(mirrors); |
1579 | continue; | |
1580 | } | |
1581 | ||
ec7ceaed EJ |
1582 | mirrors &= ~dup_mirrors; |
1583 | ctx->xout->mirrors |= dup_mirrors; | |
1584 | if (out) { | |
84f0f298 RW |
1585 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
1586 | struct xbundle *out_xbundle = xbundle_lookup(xcfg, out); | |
46c88433 EJ |
1587 | if (out_xbundle) { |
1588 | output_normal(ctx, out_xbundle, vlan); | |
1589 | } | |
ec7ceaed | 1590 | } else if (vlan != out_vlan |
9583bc14 | 1591 | && !eth_addr_is_reserved(orig_flow->dl_dst)) { |
46c88433 | 1592 | struct xbundle *xbundle; |
9583bc14 | 1593 | |
46c88433 EJ |
1594 | LIST_FOR_EACH (xbundle, list_node, &xbridge->xbundles) { |
1595 | if (xbundle_includes_vlan(xbundle, out_vlan) | |
1596 | && !xbundle_mirror_out(xbridge, xbundle)) { | |
1597 | output_normal(ctx, xbundle, out_vlan); | |
9583bc14 EJ |
1598 | } |
1599 | } | |
1600 | } | |
1601 | } | |
1602 | } | |
1603 | ||
1604 | /* Given 'vid', the VID obtained from the 802.1Q header that was received as | |
46c88433 | 1605 | * part of a packet (specify 0 if there was no 802.1Q header), and 'in_xbundle', |
9583bc14 EJ |
1606 | * the bundle on which the packet was received, returns the VLAN to which the |
1607 | * packet belongs. | |
1608 | * | |
1609 | * Both 'vid' and the return value are in the range 0...4095. */ | |
1610 | static uint16_t | |
46c88433 | 1611 | input_vid_to_vlan(const struct xbundle *in_xbundle, uint16_t vid) |
9583bc14 | 1612 | { |
46c88433 | 1613 | switch (in_xbundle->vlan_mode) { |
9583bc14 | 1614 | case PORT_VLAN_ACCESS: |
46c88433 | 1615 | return in_xbundle->vlan; |
9583bc14 EJ |
1616 | break; |
1617 | ||
1618 | case PORT_VLAN_TRUNK: | |
1619 | return vid; | |
1620 | ||
1621 | case PORT_VLAN_NATIVE_UNTAGGED: | |
1622 | case PORT_VLAN_NATIVE_TAGGED: | |
46c88433 | 1623 | return vid ? vid : in_xbundle->vlan; |
9583bc14 EJ |
1624 | |
1625 | default: | |
428b2edd | 1626 | OVS_NOT_REACHED(); |
9583bc14 EJ |
1627 | } |
1628 | } | |
1629 | ||
46c88433 | 1630 | /* Checks whether a packet with the given 'vid' may ingress on 'in_xbundle'. |
9583bc14 EJ |
1631 | * If so, returns true. Otherwise, returns false and, if 'warn' is true, logs |
1632 | * a warning. | |
1633 | * | |
1634 | * 'vid' should be the VID obtained from the 802.1Q header that was received as | |
1635 | * part of a packet (specify 0 if there was no 802.1Q header), in the range | |
1636 | * 0...4095. */ | |
1637 | static bool | |
46c88433 | 1638 | input_vid_is_valid(uint16_t vid, struct xbundle *in_xbundle, bool warn) |
9583bc14 EJ |
1639 | { |
1640 | /* Allow any VID on the OFPP_NONE port. */ | |
46c88433 | 1641 | if (in_xbundle == &ofpp_none_bundle) { |
9583bc14 EJ |
1642 | return true; |
1643 | } | |
1644 | ||
46c88433 | 1645 | switch (in_xbundle->vlan_mode) { |
9583bc14 EJ |
1646 | case PORT_VLAN_ACCESS: |
1647 | if (vid) { | |
1648 | if (warn) { | |
1649 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
46c88433 | 1650 | VLOG_WARN_RL(&rl, "dropping VLAN %"PRIu16" tagged " |
9583bc14 | 1651 | "packet received on port %s configured as VLAN " |
46c88433 EJ |
1652 | "%"PRIu16" access port", vid, in_xbundle->name, |
1653 | in_xbundle->vlan); | |
9583bc14 EJ |
1654 | } |
1655 | return false; | |
1656 | } | |
1657 | return true; | |
1658 | ||
1659 | case PORT_VLAN_NATIVE_UNTAGGED: | |
1660 | case PORT_VLAN_NATIVE_TAGGED: | |
1661 | if (!vid) { | |
1662 | /* Port must always carry its native VLAN. */ | |
1663 | return true; | |
1664 | } | |
1665 | /* Fall through. */ | |
1666 | case PORT_VLAN_TRUNK: | |
46c88433 | 1667 | if (!xbundle_includes_vlan(in_xbundle, vid)) { |
9583bc14 EJ |
1668 | if (warn) { |
1669 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
46c88433 | 1670 | VLOG_WARN_RL(&rl, "dropping VLAN %"PRIu16" packet " |
9583bc14 | 1671 | "received on port %s not configured for trunking " |
46c88433 | 1672 | "VLAN %"PRIu16, vid, in_xbundle->name, vid); |
9583bc14 EJ |
1673 | } |
1674 | return false; | |
1675 | } | |
1676 | return true; | |
1677 | ||
1678 | default: | |
428b2edd | 1679 | OVS_NOT_REACHED(); |
9583bc14 EJ |
1680 | } |
1681 | ||
1682 | } | |
1683 | ||
1684 | /* Given 'vlan', the VLAN that a packet belongs to, and | |
46c88433 | 1685 | * 'out_xbundle', a bundle on which the packet is to be output, returns the VID |
9583bc14 EJ |
1686 | * that should be included in the 802.1Q header. (If the return value is 0, |
1687 | * then the 802.1Q header should only be included in the packet if there is a | |
1688 | * nonzero PCP.) | |
1689 | * | |
1690 | * Both 'vlan' and the return value are in the range 0...4095. */ | |
1691 | static uint16_t | |
46c88433 | 1692 | output_vlan_to_vid(const struct xbundle *out_xbundle, uint16_t vlan) |
9583bc14 | 1693 | { |
46c88433 | 1694 | switch (out_xbundle->vlan_mode) { |
9583bc14 EJ |
1695 | case PORT_VLAN_ACCESS: |
1696 | return 0; | |
1697 | ||
1698 | case PORT_VLAN_TRUNK: | |
1699 | case PORT_VLAN_NATIVE_TAGGED: | |
1700 | return vlan; | |
1701 | ||
1702 | case PORT_VLAN_NATIVE_UNTAGGED: | |
46c88433 | 1703 | return vlan == out_xbundle->vlan ? 0 : vlan; |
9583bc14 EJ |
1704 | |
1705 | default: | |
428b2edd | 1706 | OVS_NOT_REACHED(); |
9583bc14 EJ |
1707 | } |
1708 | } | |
1709 | ||
1710 | static void | |
46c88433 | 1711 | output_normal(struct xlate_ctx *ctx, const struct xbundle *out_xbundle, |
9583bc14 EJ |
1712 | uint16_t vlan) |
1713 | { | |
33bf9176 | 1714 | ovs_be16 *flow_tci = &ctx->xin->flow.vlan_tci; |
9583bc14 EJ |
1715 | uint16_t vid; |
1716 | ovs_be16 tci, old_tci; | |
46c88433 | 1717 | struct xport *xport; |
e93ef1c7 JR |
1718 | struct xlate_bond_recirc xr; |
1719 | bool use_recirc = false; | |
9583bc14 | 1720 | |
46c88433 EJ |
1721 | vid = output_vlan_to_vid(out_xbundle, vlan); |
1722 | if (list_is_empty(&out_xbundle->xports)) { | |
1723 | /* Partially configured bundle with no slaves. Drop the packet. */ | |
1724 | return; | |
1725 | } else if (!out_xbundle->bond) { | |
1726 | xport = CONTAINER_OF(list_front(&out_xbundle->xports), struct xport, | |
1727 | bundle_node); | |
9583bc14 | 1728 | } else { |
84f0f298 | 1729 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
54ecb5a2 | 1730 | struct flow_wildcards *wc = &ctx->xout->wc; |
84f0f298 | 1731 | struct ofport_dpif *ofport; |
adcf00ba | 1732 | |
b440dd8c | 1733 | if (ctx->xbridge->support.recirc) { |
e93ef1c7 JR |
1734 | use_recirc = bond_may_recirc( |
1735 | out_xbundle->bond, &xr.recirc_id, &xr.hash_basis); | |
adcf00ba | 1736 | |
e93ef1c7 | 1737 | if (use_recirc) { |
adcf00ba | 1738 | /* Only TCP mode uses recirculation. */ |
e93ef1c7 | 1739 | xr.hash_alg = OVS_HASH_ALG_L4; |
adcf00ba | 1740 | bond_update_post_recirc_rules(out_xbundle->bond, false); |
54ecb5a2 AZ |
1741 | |
1742 | /* Recirculation does not require unmasking hash fields. */ | |
1743 | wc = NULL; | |
adcf00ba AZ |
1744 | } |
1745 | } | |
46c88433 | 1746 | |
54ecb5a2 AZ |
1747 | ofport = bond_choose_output_slave(out_xbundle->bond, |
1748 | &ctx->xin->flow, wc, vid); | |
84f0f298 | 1749 | xport = xport_lookup(xcfg, ofport); |
46c88433 EJ |
1750 | |
1751 | if (!xport) { | |
9583bc14 EJ |
1752 | /* No slaves enabled, so drop packet. */ |
1753 | return; | |
1754 | } | |
d6fc5f57 | 1755 | |
e93ef1c7 | 1756 | /* If use_recirc is set, the main thread will handle stats |
b256dc52 | 1757 | * accounting for this bond. */ |
e93ef1c7 | 1758 | if (!use_recirc) { |
b256dc52 JS |
1759 | if (ctx->xin->resubmit_stats) { |
1760 | bond_account(out_xbundle->bond, &ctx->xin->flow, vid, | |
1761 | ctx->xin->resubmit_stats->n_bytes); | |
1762 | } | |
1763 | if (ctx->xin->xcache) { | |
1764 | struct xc_entry *entry; | |
1765 | struct flow *flow; | |
1766 | ||
1767 | flow = &ctx->xin->flow; | |
1768 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_BOND); | |
1769 | entry->u.bond.bond = bond_ref(out_xbundle->bond); | |
1770 | entry->u.bond.flow = xmemdup(flow, sizeof *flow); | |
1771 | entry->u.bond.vid = vid; | |
1772 | } | |
d6fc5f57 | 1773 | } |
9583bc14 EJ |
1774 | } |
1775 | ||
33bf9176 | 1776 | old_tci = *flow_tci; |
9583bc14 | 1777 | tci = htons(vid); |
46c88433 | 1778 | if (tci || out_xbundle->use_priority_tags) { |
33bf9176 | 1779 | tci |= *flow_tci & htons(VLAN_PCP_MASK); |
9583bc14 EJ |
1780 | if (tci) { |
1781 | tci |= htons(VLAN_CFI); | |
1782 | } | |
1783 | } | |
33bf9176 | 1784 | *flow_tci = tci; |
9583bc14 | 1785 | |
e93ef1c7 | 1786 | compose_output_action(ctx, xport->ofp_port, use_recirc ? &xr : NULL); |
33bf9176 | 1787 | *flow_tci = old_tci; |
9583bc14 EJ |
1788 | } |
1789 | ||
1790 | /* A VM broadcasts a gratuitous ARP to indicate that it has resumed after | |
1791 | * migration. Older Citrix-patched Linux DomU used gratuitous ARP replies to | |
1792 | * indicate this; newer upstream kernels use gratuitous ARP requests. */ | |
1793 | static bool | |
1794 | is_gratuitous_arp(const struct flow *flow, struct flow_wildcards *wc) | |
1795 | { | |
1796 | if (flow->dl_type != htons(ETH_TYPE_ARP)) { | |
1797 | return false; | |
1798 | } | |
1799 | ||
1800 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); | |
1801 | if (!eth_addr_is_broadcast(flow->dl_dst)) { | |
1802 | return false; | |
1803 | } | |
1804 | ||
1805 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); | |
1806 | if (flow->nw_proto == ARP_OP_REPLY) { | |
1807 | return true; | |
1808 | } else if (flow->nw_proto == ARP_OP_REQUEST) { | |
1809 | memset(&wc->masks.nw_src, 0xff, sizeof wc->masks.nw_src); | |
1810 | memset(&wc->masks.nw_dst, 0xff, sizeof wc->masks.nw_dst); | |
1811 | ||
1812 | return flow->nw_src == flow->nw_dst; | |
1813 | } else { | |
1814 | return false; | |
1815 | } | |
1816 | } | |
1817 | ||
ff69c24a FL |
1818 | /* Determines whether packets in 'flow' within 'xbridge' should be forwarded or |
1819 | * dropped. Returns true if they may be forwarded, false if they should be | |
1820 | * dropped. | |
1821 | * | |
1822 | * 'in_port' must be the xport that corresponds to flow->in_port. | |
1823 | * 'in_port' must be part of a bundle (e.g. in_port->bundle must be nonnull). | |
1824 | * | |
1825 | * 'vlan' must be the VLAN that corresponds to flow->vlan_tci on 'in_port', as | |
1826 | * returned by input_vid_to_vlan(). It must be a valid VLAN for 'in_port', as | |
1827 | * checked by input_vid_is_valid(). | |
1828 | * | |
1829 | * May also add tags to '*tags', although the current implementation only does | |
1830 | * so in one special case. | |
1831 | */ | |
1832 | static bool | |
1833 | is_admissible(struct xlate_ctx *ctx, struct xport *in_port, | |
1834 | uint16_t vlan) | |
1835 | { | |
1836 | struct xbundle *in_xbundle = in_port->xbundle; | |
1837 | const struct xbridge *xbridge = ctx->xbridge; | |
1838 | struct flow *flow = &ctx->xin->flow; | |
1839 | ||
1840 | /* Drop frames for reserved multicast addresses | |
1841 | * only if forward_bpdu option is absent. */ | |
1842 | if (!xbridge->forward_bpdu && eth_addr_is_reserved(flow->dl_dst)) { | |
1843 | xlate_report(ctx, "packet has reserved destination MAC, dropping"); | |
1844 | return false; | |
1845 | } | |
1846 | ||
1847 | if (in_xbundle->bond) { | |
1848 | struct mac_entry *mac; | |
1849 | ||
1850 | switch (bond_check_admissibility(in_xbundle->bond, in_port->ofport, | |
1851 | flow->dl_dst)) { | |
1852 | case BV_ACCEPT: | |
1853 | break; | |
1854 | ||
1855 | case BV_DROP: | |
1856 | xlate_report(ctx, "bonding refused admissibility, dropping"); | |
1857 | return false; | |
1858 | ||
1859 | case BV_DROP_IF_MOVED: | |
1860 | ovs_rwlock_rdlock(&xbridge->ml->rwlock); | |
1861 | mac = mac_learning_lookup(xbridge->ml, flow->dl_src, vlan); | |
9d078ec2 BP |
1862 | if (mac |
1863 | && mac_entry_get_port(xbridge->ml, mac) != in_xbundle->ofbundle | |
1864 | && (!is_gratuitous_arp(flow, &ctx->xout->wc) | |
1865 | || mac_entry_is_grat_arp_locked(mac))) { | |
ff69c24a FL |
1866 | ovs_rwlock_unlock(&xbridge->ml->rwlock); |
1867 | xlate_report(ctx, "SLB bond thinks this packet looped back, " | |
1868 | "dropping"); | |
1869 | return false; | |
1870 | } | |
1871 | ovs_rwlock_unlock(&xbridge->ml->rwlock); | |
1872 | break; | |
1873 | } | |
1874 | } | |
1875 | ||
1876 | return true; | |
1877 | } | |
1878 | ||
ee047520 BP |
1879 | /* Checks whether a MAC learning update is necessary for MAC learning table |
1880 | * 'ml' given that a packet matching 'flow' was received on 'in_xbundle' in | |
1881 | * 'vlan'. | |
1882 | * | |
1883 | * Most packets processed through the MAC learning table do not actually | |
1884 | * change it in any way. This function requires only a read lock on the MAC | |
1885 | * learning table, so it is much cheaper in this common case. | |
1886 | * | |
1887 | * Keep the code here synchronized with that in update_learning_table__() | |
1888 | * below. */ | |
1889 | static bool | |
1890 | is_mac_learning_update_needed(const struct mac_learning *ml, | |
1891 | const struct flow *flow, | |
1892 | struct flow_wildcards *wc, | |
1893 | int vlan, struct xbundle *in_xbundle) | |
d6fc5f57 | 1894 | OVS_REQ_RDLOCK(ml->rwlock) |
9583bc14 EJ |
1895 | { |
1896 | struct mac_entry *mac; | |
1897 | ||
ee047520 BP |
1898 | if (!mac_learning_may_learn(ml, flow->dl_src, vlan)) { |
1899 | return false; | |
1900 | } | |
1901 | ||
1902 | mac = mac_learning_lookup(ml, flow->dl_src, vlan); | |
1903 | if (!mac || mac_entry_age(ml, mac)) { | |
1904 | return true; | |
9583bc14 EJ |
1905 | } |
1906 | ||
ee047520 BP |
1907 | if (is_gratuitous_arp(flow, wc)) { |
1908 | /* We don't want to learn from gratuitous ARP packets that are | |
1909 | * reflected back over bond slaves so we lock the learning table. */ | |
1910 | if (!in_xbundle->bond) { | |
1911 | return true; | |
1912 | } else if (mac_entry_is_grat_arp_locked(mac)) { | |
1913 | return false; | |
1914 | } | |
1915 | } | |
1916 | ||
9d078ec2 | 1917 | return mac_entry_get_port(ml, mac) != in_xbundle->ofbundle; |
ee047520 BP |
1918 | } |
1919 | ||
1920 | ||
1921 | /* Updates MAC learning table 'ml' given that a packet matching 'flow' was | |
1922 | * received on 'in_xbundle' in 'vlan'. | |
1923 | * | |
1924 | * This code repeats all the checks in is_mac_learning_update_needed() because | |
1925 | * the lock was released between there and here and thus the MAC learning state | |
1926 | * could have changed. | |
1927 | * | |
1928 | * Keep the code here synchronized with that in is_mac_learning_update_needed() | |
1929 | * above. */ | |
1930 | static void | |
1931 | update_learning_table__(const struct xbridge *xbridge, | |
1932 | const struct flow *flow, struct flow_wildcards *wc, | |
1933 | int vlan, struct xbundle *in_xbundle) | |
d6fc5f57 | 1934 | OVS_REQ_WRLOCK(xbridge->ml->rwlock) |
ee047520 BP |
1935 | { |
1936 | struct mac_entry *mac; | |
1937 | ||
46c88433 | 1938 | if (!mac_learning_may_learn(xbridge->ml, flow->dl_src, vlan)) { |
ee047520 | 1939 | return; |
9583bc14 EJ |
1940 | } |
1941 | ||
46c88433 | 1942 | mac = mac_learning_insert(xbridge->ml, flow->dl_src, vlan); |
9583bc14 EJ |
1943 | if (is_gratuitous_arp(flow, wc)) { |
1944 | /* We don't want to learn from gratuitous ARP packets that are | |
1945 | * reflected back over bond slaves so we lock the learning table. */ | |
46c88433 | 1946 | if (!in_xbundle->bond) { |
9583bc14 EJ |
1947 | mac_entry_set_grat_arp_lock(mac); |
1948 | } else if (mac_entry_is_grat_arp_locked(mac)) { | |
ee047520 | 1949 | return; |
9583bc14 EJ |
1950 | } |
1951 | } | |
1952 | ||
9d078ec2 | 1953 | if (mac_entry_get_port(xbridge->ml, mac) != in_xbundle->ofbundle) { |
9583bc14 EJ |
1954 | /* The log messages here could actually be useful in debugging, |
1955 | * so keep the rate limit relatively high. */ | |
1956 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(30, 300); | |
ee047520 | 1957 | |
9583bc14 EJ |
1958 | VLOG_DBG_RL(&rl, "bridge %s: learned that "ETH_ADDR_FMT" is " |
1959 | "on port %s in VLAN %d", | |
46c88433 EJ |
1960 | xbridge->name, ETH_ADDR_ARGS(flow->dl_src), |
1961 | in_xbundle->name, vlan); | |
9583bc14 | 1962 | |
9d078ec2 | 1963 | mac_entry_set_port(xbridge->ml, mac, in_xbundle->ofbundle); |
9583bc14 | 1964 | } |
ee047520 BP |
1965 | } |
1966 | ||
1967 | static void | |
1968 | update_learning_table(const struct xbridge *xbridge, | |
1969 | const struct flow *flow, struct flow_wildcards *wc, | |
1970 | int vlan, struct xbundle *in_xbundle) | |
1971 | { | |
1972 | bool need_update; | |
1973 | ||
1974 | /* Don't learn the OFPP_NONE port. */ | |
1975 | if (in_xbundle == &ofpp_none_bundle) { | |
1976 | return; | |
1977 | } | |
1978 | ||
1979 | /* First try the common case: no change to MAC learning table. */ | |
1980 | ovs_rwlock_rdlock(&xbridge->ml->rwlock); | |
1981 | need_update = is_mac_learning_update_needed(xbridge->ml, flow, wc, vlan, | |
1982 | in_xbundle); | |
509c0149 | 1983 | ovs_rwlock_unlock(&xbridge->ml->rwlock); |
ee047520 BP |
1984 | |
1985 | if (need_update) { | |
1986 | /* Slow path: MAC learning table might need an update. */ | |
1987 | ovs_rwlock_wrlock(&xbridge->ml->rwlock); | |
1988 | update_learning_table__(xbridge, flow, wc, vlan, in_xbundle); | |
1989 | ovs_rwlock_unlock(&xbridge->ml->rwlock); | |
1990 | } | |
9583bc14 EJ |
1991 | } |
1992 | ||
86e2dcdd FL |
1993 | /* Updates multicast snooping table 'ms' given that a packet matching 'flow' |
1994 | * was received on 'in_xbundle' in 'vlan' and is either Report or Query. */ | |
1995 | static void | |
1996 | update_mcast_snooping_table__(const struct xbridge *xbridge, | |
1997 | const struct flow *flow, | |
1998 | struct mcast_snooping *ms, | |
1999 | ovs_be32 ip4, int vlan, | |
2000 | struct xbundle *in_xbundle) | |
2001 | OVS_REQ_WRLOCK(ms->rwlock) | |
2002 | { | |
2003 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(60, 30); | |
2004 | ||
2005 | switch (ntohs(flow->tp_src)) { | |
2006 | case IGMP_HOST_MEMBERSHIP_REPORT: | |
2007 | case IGMPV2_HOST_MEMBERSHIP_REPORT: | |
2008 | if (mcast_snooping_add_group(ms, ip4, vlan, in_xbundle->ofbundle)) { | |
2009 | VLOG_DBG_RL(&rl, "bridge %s: multicast snooping learned that " | |
2010 | IP_FMT" is on port %s in VLAN %d", | |
2011 | xbridge->name, IP_ARGS(ip4), in_xbundle->name, vlan); | |
2012 | } | |
2013 | break; | |
2014 | case IGMP_HOST_LEAVE_MESSAGE: | |
2015 | if (mcast_snooping_leave_group(ms, ip4, vlan, in_xbundle->ofbundle)) { | |
2016 | VLOG_DBG_RL(&rl, "bridge %s: multicast snooping leaving " | |
2017 | IP_FMT" is on port %s in VLAN %d", | |
2018 | xbridge->name, IP_ARGS(ip4), in_xbundle->name, vlan); | |
2019 | } | |
2020 | break; | |
2021 | case IGMP_HOST_MEMBERSHIP_QUERY: | |
2022 | if (flow->nw_src && mcast_snooping_add_mrouter(ms, vlan, | |
2023 | in_xbundle->ofbundle)) { | |
2024 | VLOG_DBG_RL(&rl, "bridge %s: multicast snooping query from " | |
2025 | IP_FMT" is on port %s in VLAN %d", | |
2026 | xbridge->name, IP_ARGS(flow->nw_src), | |
2027 | in_xbundle->name, vlan); | |
2028 | } | |
2029 | break; | |
2030 | } | |
2031 | } | |
2032 | ||
2033 | /* Updates multicast snooping table 'ms' given that a packet matching 'flow' | |
2034 | * was received on 'in_xbundle' in 'vlan'. */ | |
2035 | static void | |
2036 | update_mcast_snooping_table(const struct xbridge *xbridge, | |
2037 | const struct flow *flow, int vlan, | |
2038 | struct xbundle *in_xbundle) | |
2039 | { | |
2040 | struct mcast_snooping *ms = xbridge->ms; | |
2041 | struct xlate_cfg *xcfg; | |
2042 | struct xbundle *mcast_xbundle; | |
f4ae6e23 | 2043 | struct mcast_port_bundle *fport; |
86e2dcdd FL |
2044 | |
2045 | /* Don't learn the OFPP_NONE port. */ | |
2046 | if (in_xbundle == &ofpp_none_bundle) { | |
2047 | return; | |
2048 | } | |
2049 | ||
2050 | /* Don't learn from flood ports */ | |
2051 | mcast_xbundle = NULL; | |
2052 | ovs_rwlock_wrlock(&ms->rwlock); | |
2053 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
f4ae6e23 | 2054 | LIST_FOR_EACH(fport, node, &ms->fport_list) { |
86e2dcdd FL |
2055 | mcast_xbundle = xbundle_lookup(xcfg, fport->port); |
2056 | if (mcast_xbundle == in_xbundle) { | |
2057 | break; | |
2058 | } | |
2059 | } | |
2060 | ||
2061 | if (!mcast_xbundle || mcast_xbundle != in_xbundle) { | |
2062 | update_mcast_snooping_table__(xbridge, flow, ms, flow->igmp_group_ip4, | |
2063 | vlan, in_xbundle); | |
2064 | } | |
2065 | ovs_rwlock_unlock(&ms->rwlock); | |
2066 | } | |
2067 | ||
2068 | /* send the packet to ports having the multicast group learned */ | |
2069 | static void | |
2070 | xlate_normal_mcast_send_group(struct xlate_ctx *ctx, | |
2071 | struct mcast_snooping *ms OVS_UNUSED, | |
2072 | struct mcast_group *grp, | |
2073 | struct xbundle *in_xbundle, uint16_t vlan) | |
2074 | OVS_REQ_RDLOCK(ms->rwlock) | |
2075 | { | |
2076 | struct xlate_cfg *xcfg; | |
2077 | struct mcast_group_bundle *b; | |
2078 | struct xbundle *mcast_xbundle; | |
2079 | ||
2080 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
2081 | LIST_FOR_EACH(b, bundle_node, &grp->bundle_lru) { | |
2082 | mcast_xbundle = xbundle_lookup(xcfg, b->port); | |
2083 | if (mcast_xbundle && mcast_xbundle != in_xbundle) { | |
2084 | xlate_report(ctx, "forwarding to mcast group port"); | |
2085 | output_normal(ctx, mcast_xbundle, vlan); | |
2086 | } else if (!mcast_xbundle) { | |
2087 | xlate_report(ctx, "mcast group port is unknown, dropping"); | |
2088 | } else { | |
2089 | xlate_report(ctx, "mcast group port is input port, dropping"); | |
2090 | } | |
2091 | } | |
2092 | } | |
2093 | ||
2094 | /* send the packet to ports connected to multicast routers */ | |
2095 | static void | |
2096 | xlate_normal_mcast_send_mrouters(struct xlate_ctx *ctx, | |
2097 | struct mcast_snooping *ms, | |
2098 | struct xbundle *in_xbundle, uint16_t vlan) | |
2099 | OVS_REQ_RDLOCK(ms->rwlock) | |
2100 | { | |
2101 | struct xlate_cfg *xcfg; | |
2102 | struct mcast_mrouter_bundle *mrouter; | |
2103 | struct xbundle *mcast_xbundle; | |
2104 | ||
2105 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
2106 | LIST_FOR_EACH(mrouter, mrouter_node, &ms->mrouter_lru) { | |
2107 | mcast_xbundle = xbundle_lookup(xcfg, mrouter->port); | |
2108 | if (mcast_xbundle && mcast_xbundle != in_xbundle) { | |
2109 | xlate_report(ctx, "forwarding to mcast router port"); | |
2110 | output_normal(ctx, mcast_xbundle, vlan); | |
2111 | } else if (!mcast_xbundle) { | |
2112 | xlate_report(ctx, "mcast router port is unknown, dropping"); | |
2113 | } else { | |
2114 | xlate_report(ctx, "mcast router port is input port, dropping"); | |
2115 | } | |
2116 | } | |
2117 | } | |
2118 | ||
2119 | /* send the packet to ports flagged to be flooded */ | |
2120 | static void | |
2121 | xlate_normal_mcast_send_fports(struct xlate_ctx *ctx, | |
2122 | struct mcast_snooping *ms, | |
2123 | struct xbundle *in_xbundle, uint16_t vlan) | |
2124 | OVS_REQ_RDLOCK(ms->rwlock) | |
2125 | { | |
2126 | struct xlate_cfg *xcfg; | |
f4ae6e23 | 2127 | struct mcast_port_bundle *fport; |
86e2dcdd FL |
2128 | struct xbundle *mcast_xbundle; |
2129 | ||
2130 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
f4ae6e23 | 2131 | LIST_FOR_EACH(fport, node, &ms->fport_list) { |
86e2dcdd FL |
2132 | mcast_xbundle = xbundle_lookup(xcfg, fport->port); |
2133 | if (mcast_xbundle && mcast_xbundle != in_xbundle) { | |
2134 | xlate_report(ctx, "forwarding to mcast flood port"); | |
2135 | output_normal(ctx, mcast_xbundle, vlan); | |
2136 | } else if (!mcast_xbundle) { | |
2137 | xlate_report(ctx, "mcast flood port is unknown, dropping"); | |
2138 | } else { | |
2139 | xlate_report(ctx, "mcast flood port is input port, dropping"); | |
2140 | } | |
2141 | } | |
2142 | } | |
2143 | ||
8e04a33f FL |
2144 | /* forward the Reports to configured ports */ |
2145 | static void | |
2146 | xlate_normal_mcast_send_rports(struct xlate_ctx *ctx, | |
2147 | struct mcast_snooping *ms, | |
2148 | struct xbundle *in_xbundle, uint16_t vlan) | |
2149 | OVS_REQ_RDLOCK(ms->rwlock) | |
2150 | { | |
2151 | struct xlate_cfg *xcfg; | |
2152 | struct mcast_port_bundle *rport; | |
2153 | struct xbundle *mcast_xbundle; | |
2154 | ||
2155 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
2156 | LIST_FOR_EACH(rport, node, &ms->rport_list) { | |
2157 | mcast_xbundle = xbundle_lookup(xcfg, rport->port); | |
2158 | if (mcast_xbundle && mcast_xbundle != in_xbundle) { | |
2159 | xlate_report(ctx, "forwarding Report to mcast flagged port"); | |
2160 | output_normal(ctx, mcast_xbundle, vlan); | |
2161 | } else if (!mcast_xbundle) { | |
2162 | xlate_report(ctx, "mcast port is unknown, dropping the Report"); | |
2163 | } else { | |
2164 | xlate_report(ctx, "mcast port is input port, dropping the Report"); | |
2165 | } | |
2166 | } | |
2167 | } | |
2168 | ||
682800a4 FL |
2169 | static void |
2170 | xlate_normal_flood(struct xlate_ctx *ctx, struct xbundle *in_xbundle, | |
2171 | uint16_t vlan) | |
2172 | { | |
2173 | struct xbundle *xbundle; | |
2174 | ||
2175 | LIST_FOR_EACH (xbundle, list_node, &ctx->xbridge->xbundles) { | |
2176 | if (xbundle != in_xbundle | |
2177 | && xbundle_includes_vlan(xbundle, vlan) | |
2178 | && xbundle->floodable | |
2179 | && !xbundle_mirror_out(ctx->xbridge, xbundle)) { | |
2180 | output_normal(ctx, xbundle, vlan); | |
2181 | } | |
2182 | } | |
2183 | ctx->xout->nf_output_iface = NF_OUT_FLOOD; | |
2184 | } | |
2185 | ||
9583bc14 EJ |
2186 | static void |
2187 | xlate_normal(struct xlate_ctx *ctx) | |
2188 | { | |
33bf9176 BP |
2189 | struct flow_wildcards *wc = &ctx->xout->wc; |
2190 | struct flow *flow = &ctx->xin->flow; | |
46c88433 EJ |
2191 | struct xbundle *in_xbundle; |
2192 | struct xport *in_port; | |
9583bc14 | 2193 | struct mac_entry *mac; |
d6d5bbc9 | 2194 | void *mac_port; |
9583bc14 EJ |
2195 | uint16_t vlan; |
2196 | uint16_t vid; | |
2197 | ||
2198 | ctx->xout->has_normal = true; | |
2199 | ||
33bf9176 BP |
2200 | memset(&wc->masks.dl_src, 0xff, sizeof wc->masks.dl_src); |
2201 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); | |
1dd35f8a | 2202 | wc->masks.vlan_tci |= htons(VLAN_VID_MASK | VLAN_CFI); |
9583bc14 | 2203 | |
46c88433 EJ |
2204 | in_xbundle = lookup_input_bundle(ctx->xbridge, flow->in_port.ofp_port, |
2205 | ctx->xin->packet != NULL, &in_port); | |
2206 | if (!in_xbundle) { | |
9583bc14 EJ |
2207 | xlate_report(ctx, "no input bundle, dropping"); |
2208 | return; | |
2209 | } | |
2210 | ||
2211 | /* Drop malformed frames. */ | |
33bf9176 BP |
2212 | if (flow->dl_type == htons(ETH_TYPE_VLAN) && |
2213 | !(flow->vlan_tci & htons(VLAN_CFI))) { | |
9583bc14 EJ |
2214 | if (ctx->xin->packet != NULL) { |
2215 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
2216 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet with partial " | |
2217 | "VLAN tag received on port %s", | |
46c88433 | 2218 | ctx->xbridge->name, in_xbundle->name); |
9583bc14 EJ |
2219 | } |
2220 | xlate_report(ctx, "partial VLAN tag, dropping"); | |
2221 | return; | |
2222 | } | |
2223 | ||
2224 | /* Drop frames on bundles reserved for mirroring. */ | |
46c88433 | 2225 | if (xbundle_mirror_out(ctx->xbridge, in_xbundle)) { |
9583bc14 EJ |
2226 | if (ctx->xin->packet != NULL) { |
2227 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
2228 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet received on port " | |
2229 | "%s, which is reserved exclusively for mirroring", | |
46c88433 | 2230 | ctx->xbridge->name, in_xbundle->name); |
9583bc14 EJ |
2231 | } |
2232 | xlate_report(ctx, "input port is mirror output port, dropping"); | |
2233 | return; | |
2234 | } | |
2235 | ||
2236 | /* Check VLAN. */ | |
33bf9176 | 2237 | vid = vlan_tci_to_vid(flow->vlan_tci); |
46c88433 | 2238 | if (!input_vid_is_valid(vid, in_xbundle, ctx->xin->packet != NULL)) { |
9583bc14 EJ |
2239 | xlate_report(ctx, "disallowed VLAN VID for this input port, dropping"); |
2240 | return; | |
2241 | } | |
46c88433 | 2242 | vlan = input_vid_to_vlan(in_xbundle, vid); |
9583bc14 EJ |
2243 | |
2244 | /* Check other admissibility requirements. */ | |
2245 | if (in_port && !is_admissible(ctx, in_port, vlan)) { | |
2246 | return; | |
2247 | } | |
2248 | ||
2249 | /* Learn source MAC. */ | |
2250 | if (ctx->xin->may_learn) { | |
46c88433 | 2251 | update_learning_table(ctx->xbridge, flow, wc, vlan, in_xbundle); |
9583bc14 | 2252 | } |
b256dc52 JS |
2253 | if (ctx->xin->xcache) { |
2254 | struct xc_entry *entry; | |
2255 | ||
2256 | /* Save enough info to update mac learning table later. */ | |
2257 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_NORMAL); | |
9edf6b48 | 2258 | entry->u.normal.ofproto = ctx->xbridge->ofproto; |
b256dc52 JS |
2259 | entry->u.normal.flow = xmemdup(flow, sizeof *flow); |
2260 | entry->u.normal.vlan = vlan; | |
2261 | } | |
9583bc14 EJ |
2262 | |
2263 | /* Determine output bundle. */ | |
86e2dcdd FL |
2264 | if (mcast_snooping_enabled(ctx->xbridge->ms) |
2265 | && !eth_addr_is_broadcast(flow->dl_dst) | |
2266 | && eth_addr_is_multicast(flow->dl_dst) | |
2267 | && flow->dl_type == htons(ETH_TYPE_IP)) { | |
2268 | struct mcast_snooping *ms = ctx->xbridge->ms; | |
2269 | struct mcast_group *grp; | |
2270 | ||
2271 | if (flow->nw_proto == IPPROTO_IGMP) { | |
d29f137b TLSC |
2272 | if (mcast_snooping_is_membership(flow->tp_src) || |
2273 | mcast_snooping_is_query(flow->tp_src)) { | |
2274 | if (ctx->xin->may_learn) { | |
86e2dcdd FL |
2275 | update_mcast_snooping_table(ctx->xbridge, flow, vlan, |
2276 | in_xbundle); | |
d29f137b TLSC |
2277 | } |
2278 | /* | |
2279 | * IGMP packets need to take the slow path, in order to be | |
2280 | * processed for mdb updates. That will prevent expires | |
2281 | * firing off even after hosts have sent reports. | |
2282 | */ | |
2283 | ctx->xout->slow |= SLOW_ACTION; | |
86e2dcdd | 2284 | } |
d6d5bbc9 | 2285 | |
86e2dcdd FL |
2286 | if (mcast_snooping_is_membership(flow->tp_src)) { |
2287 | ovs_rwlock_rdlock(&ms->rwlock); | |
2288 | xlate_normal_mcast_send_mrouters(ctx, ms, in_xbundle, vlan); | |
8e04a33f FL |
2289 | /* RFC4541: section 2.1.1, item 1: A snooping switch should |
2290 | * forward IGMP Membership Reports only to those ports where | |
2291 | * multicast routers are attached. Alternatively stated: a | |
2292 | * snooping switch should not forward IGMP Membership Reports | |
2293 | * to ports on which only hosts are attached. | |
2294 | * An administrative control may be provided to override this | |
2295 | * restriction, allowing the report messages to be flooded to | |
2296 | * other ports. */ | |
2297 | xlate_normal_mcast_send_rports(ctx, ms, in_xbundle, vlan); | |
86e2dcdd FL |
2298 | ovs_rwlock_unlock(&ms->rwlock); |
2299 | } else { | |
2300 | xlate_report(ctx, "multicast traffic, flooding"); | |
2301 | xlate_normal_flood(ctx, in_xbundle, vlan); | |
2302 | } | |
2303 | return; | |
2304 | } else { | |
2305 | if (ip_is_local_multicast(flow->nw_dst)) { | |
2306 | /* RFC4541: section 2.1.2, item 2: Packets with a dst IP | |
2307 | * address in the 224.0.0.x range which are not IGMP must | |
2308 | * be forwarded on all ports */ | |
2309 | xlate_report(ctx, "RFC4541: section 2.1.2, item 2, flooding"); | |
2310 | xlate_normal_flood(ctx, in_xbundle, vlan); | |
2311 | return; | |
2312 | } | |
2313 | } | |
2314 | ||
2315 | /* forwarding to group base ports */ | |
2316 | ovs_rwlock_rdlock(&ms->rwlock); | |
2317 | grp = mcast_snooping_lookup(ms, flow->nw_dst, vlan); | |
2318 | if (grp) { | |
2319 | xlate_normal_mcast_send_group(ctx, ms, grp, in_xbundle, vlan); | |
2320 | xlate_normal_mcast_send_fports(ctx, ms, in_xbundle, vlan); | |
2321 | xlate_normal_mcast_send_mrouters(ctx, ms, in_xbundle, vlan); | |
9583bc14 | 2322 | } else { |
86e2dcdd FL |
2323 | if (mcast_snooping_flood_unreg(ms)) { |
2324 | xlate_report(ctx, "unregistered multicast, flooding"); | |
2325 | xlate_normal_flood(ctx, in_xbundle, vlan); | |
2326 | } else { | |
2327 | xlate_normal_mcast_send_mrouters(ctx, ms, in_xbundle, vlan); | |
2328 | xlate_normal_mcast_send_fports(ctx, ms, in_xbundle, vlan); | |
2329 | } | |
9583bc14 | 2330 | } |
86e2dcdd | 2331 | ovs_rwlock_unlock(&ms->rwlock); |
9583bc14 | 2332 | } else { |
86e2dcdd FL |
2333 | ovs_rwlock_rdlock(&ctx->xbridge->ml->rwlock); |
2334 | mac = mac_learning_lookup(ctx->xbridge->ml, flow->dl_dst, vlan); | |
9d078ec2 | 2335 | mac_port = mac ? mac_entry_get_port(ctx->xbridge->ml, mac) : NULL; |
86e2dcdd FL |
2336 | ovs_rwlock_unlock(&ctx->xbridge->ml->rwlock); |
2337 | ||
2338 | if (mac_port) { | |
2339 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
2340 | struct xbundle *mac_xbundle = xbundle_lookup(xcfg, mac_port); | |
2341 | if (mac_xbundle && mac_xbundle != in_xbundle) { | |
2342 | xlate_report(ctx, "forwarding to learned port"); | |
2343 | output_normal(ctx, mac_xbundle, vlan); | |
2344 | } else if (!mac_xbundle) { | |
2345 | xlate_report(ctx, "learned port is unknown, dropping"); | |
2346 | } else { | |
2347 | xlate_report(ctx, "learned port is input port, dropping"); | |
2348 | } | |
2349 | } else { | |
2350 | xlate_report(ctx, "no learned MAC for destination, flooding"); | |
2351 | xlate_normal_flood(ctx, in_xbundle, vlan); | |
2352 | } | |
9583bc14 EJ |
2353 | } |
2354 | } | |
2355 | ||
2356 | /* Compose SAMPLE action for sFlow or IPFIX. The given probability is | |
2357 | * the number of packets out of UINT32_MAX to sample. The given | |
2358 | * cookie is passed back in the callback for each sampled packet. | |
2359 | */ | |
2360 | static size_t | |
46c88433 | 2361 | compose_sample_action(const struct xbridge *xbridge, |
9583bc14 EJ |
2362 | struct ofpbuf *odp_actions, |
2363 | const struct flow *flow, | |
2364 | const uint32_t probability, | |
2365 | const union user_action_cookie *cookie, | |
8b7ea2d4 WZ |
2366 | const size_t cookie_size, |
2367 | const odp_port_t tunnel_out_port) | |
9583bc14 EJ |
2368 | { |
2369 | size_t sample_offset, actions_offset; | |
89a8a7f0 | 2370 | odp_port_t odp_port; |
9583bc14 | 2371 | int cookie_offset; |
89a8a7f0 | 2372 | uint32_t pid; |
9583bc14 EJ |
2373 | |
2374 | sample_offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_SAMPLE); | |
2375 | ||
2376 | nl_msg_put_u32(odp_actions, OVS_SAMPLE_ATTR_PROBABILITY, probability); | |
2377 | ||
2378 | actions_offset = nl_msg_start_nested(odp_actions, OVS_SAMPLE_ATTR_ACTIONS); | |
89a8a7f0 EJ |
2379 | |
2380 | odp_port = ofp_port_to_odp_port(xbridge, flow->in_port.ofp_port); | |
9a159f74 AW |
2381 | pid = dpif_port_get_pid(xbridge->dpif, odp_port, |
2382 | flow_hash_5tuple(flow, 0)); | |
2383 | cookie_offset = odp_put_userspace_action(pid, cookie, cookie_size, | |
8b7ea2d4 | 2384 | tunnel_out_port, odp_actions); |
9583bc14 EJ |
2385 | |
2386 | nl_msg_end_nested(odp_actions, actions_offset); | |
2387 | nl_msg_end_nested(odp_actions, sample_offset); | |
2388 | return cookie_offset; | |
2389 | } | |
2390 | ||
2391 | static void | |
46c88433 EJ |
2392 | compose_sflow_cookie(const struct xbridge *xbridge, ovs_be16 vlan_tci, |
2393 | odp_port_t odp_port, unsigned int n_outputs, | |
2394 | union user_action_cookie *cookie) | |
9583bc14 EJ |
2395 | { |
2396 | int ifindex; | |
2397 | ||
2398 | cookie->type = USER_ACTION_COOKIE_SFLOW; | |
2399 | cookie->sflow.vlan_tci = vlan_tci; | |
2400 | ||
2401 | /* See http://www.sflow.org/sflow_version_5.txt (search for "Input/output | |
2402 | * port information") for the interpretation of cookie->output. */ | |
2403 | switch (n_outputs) { | |
2404 | case 0: | |
2405 | /* 0x40000000 | 256 means "packet dropped for unknown reason". */ | |
2406 | cookie->sflow.output = 0x40000000 | 256; | |
2407 | break; | |
2408 | ||
2409 | case 1: | |
46c88433 | 2410 | ifindex = dpif_sflow_odp_port_to_ifindex(xbridge->sflow, odp_port); |
9583bc14 EJ |
2411 | if (ifindex) { |
2412 | cookie->sflow.output = ifindex; | |
2413 | break; | |
2414 | } | |
2415 | /* Fall through. */ | |
2416 | default: | |
2417 | /* 0x80000000 means "multiple output ports. */ | |
2418 | cookie->sflow.output = 0x80000000 | n_outputs; | |
2419 | break; | |
2420 | } | |
2421 | } | |
2422 | ||
2423 | /* Compose SAMPLE action for sFlow bridge sampling. */ | |
2424 | static size_t | |
46c88433 | 2425 | compose_sflow_action(const struct xbridge *xbridge, |
9583bc14 EJ |
2426 | struct ofpbuf *odp_actions, |
2427 | const struct flow *flow, | |
4e022ec0 | 2428 | odp_port_t odp_port) |
9583bc14 EJ |
2429 | { |
2430 | uint32_t probability; | |
2431 | union user_action_cookie cookie; | |
2432 | ||
46c88433 | 2433 | if (!xbridge->sflow || flow->in_port.ofp_port == OFPP_NONE) { |
9583bc14 EJ |
2434 | return 0; |
2435 | } | |
2436 | ||
46c88433 EJ |
2437 | probability = dpif_sflow_get_probability(xbridge->sflow); |
2438 | compose_sflow_cookie(xbridge, htons(0), odp_port, | |
4e022ec0 | 2439 | odp_port == ODPP_NONE ? 0 : 1, &cookie); |
9583bc14 | 2440 | |
46c88433 | 2441 | return compose_sample_action(xbridge, odp_actions, flow, probability, |
8b7ea2d4 | 2442 | &cookie, sizeof cookie.sflow, ODPP_NONE); |
9583bc14 EJ |
2443 | } |
2444 | ||
2445 | static void | |
2446 | compose_flow_sample_cookie(uint16_t probability, uint32_t collector_set_id, | |
2447 | uint32_t obs_domain_id, uint32_t obs_point_id, | |
2448 | union user_action_cookie *cookie) | |
2449 | { | |
2450 | cookie->type = USER_ACTION_COOKIE_FLOW_SAMPLE; | |
2451 | cookie->flow_sample.probability = probability; | |
2452 | cookie->flow_sample.collector_set_id = collector_set_id; | |
2453 | cookie->flow_sample.obs_domain_id = obs_domain_id; | |
2454 | cookie->flow_sample.obs_point_id = obs_point_id; | |
2455 | } | |
2456 | ||
2457 | static void | |
8b7ea2d4 WZ |
2458 | compose_ipfix_cookie(union user_action_cookie *cookie, |
2459 | odp_port_t output_odp_port) | |
9583bc14 EJ |
2460 | { |
2461 | cookie->type = USER_ACTION_COOKIE_IPFIX; | |
8b7ea2d4 | 2462 | cookie->ipfix.output_odp_port = output_odp_port; |
9583bc14 EJ |
2463 | } |
2464 | ||
2465 | /* Compose SAMPLE action for IPFIX bridge sampling. */ | |
2466 | static void | |
46c88433 | 2467 | compose_ipfix_action(const struct xbridge *xbridge, |
9583bc14 | 2468 | struct ofpbuf *odp_actions, |
8b7ea2d4 WZ |
2469 | const struct flow *flow, |
2470 | odp_port_t output_odp_port) | |
9583bc14 EJ |
2471 | { |
2472 | uint32_t probability; | |
2473 | union user_action_cookie cookie; | |
8b7ea2d4 | 2474 | odp_port_t tunnel_out_port = ODPP_NONE; |
9583bc14 | 2475 | |
46c88433 | 2476 | if (!xbridge->ipfix || flow->in_port.ofp_port == OFPP_NONE) { |
9583bc14 EJ |
2477 | return; |
2478 | } | |
2479 | ||
8b7ea2d4 WZ |
2480 | /* For input case, output_odp_port is ODPP_NONE, which is an invalid port |
2481 | * number. */ | |
2482 | if (output_odp_port == ODPP_NONE && | |
2483 | !dpif_ipfix_get_bridge_exporter_input_sampling(xbridge->ipfix)) { | |
2484 | return; | |
2485 | } | |
2486 | ||
2487 | /* For output case, output_odp_port is valid*/ | |
2488 | if (output_odp_port != ODPP_NONE) { | |
2489 | if (!dpif_ipfix_get_bridge_exporter_output_sampling(xbridge->ipfix)) { | |
2490 | return; | |
2491 | } | |
2492 | /* If tunnel sampling is enabled, put an additional option attribute: | |
2493 | * OVS_USERSPACE_ATTR_TUNNEL_OUT_PORT | |
2494 | */ | |
2495 | if (dpif_ipfix_get_bridge_exporter_tunnel_sampling(xbridge->ipfix) && | |
2496 | dpif_ipfix_get_tunnel_port(xbridge->ipfix, output_odp_port) ) { | |
2497 | tunnel_out_port = output_odp_port; | |
2498 | } | |
2499 | } | |
2500 | ||
46c88433 | 2501 | probability = dpif_ipfix_get_bridge_exporter_probability(xbridge->ipfix); |
8b7ea2d4 | 2502 | compose_ipfix_cookie(&cookie, output_odp_port); |
9583bc14 | 2503 | |
46c88433 | 2504 | compose_sample_action(xbridge, odp_actions, flow, probability, |
8b7ea2d4 | 2505 | &cookie, sizeof cookie.ipfix, tunnel_out_port); |
9583bc14 EJ |
2506 | } |
2507 | ||
2508 | /* SAMPLE action for sFlow must be first action in any given list of | |
2509 | * actions. At this point we do not have all information required to | |
2510 | * build it. So try to build sample action as complete as possible. */ | |
2511 | static void | |
2512 | add_sflow_action(struct xlate_ctx *ctx) | |
2513 | { | |
46c88433 | 2514 | ctx->user_cookie_offset = compose_sflow_action(ctx->xbridge, |
cc377352 | 2515 | ctx->xout->odp_actions, |
4e022ec0 | 2516 | &ctx->xin->flow, ODPP_NONE); |
9583bc14 EJ |
2517 | ctx->sflow_odp_port = 0; |
2518 | ctx->sflow_n_outputs = 0; | |
2519 | } | |
2520 | ||
2521 | /* SAMPLE action for IPFIX must be 1st or 2nd action in any given list | |
2522 | * of actions, eventually after the SAMPLE action for sFlow. */ | |
2523 | static void | |
2524 | add_ipfix_action(struct xlate_ctx *ctx) | |
2525 | { | |
cc377352 | 2526 | compose_ipfix_action(ctx->xbridge, ctx->xout->odp_actions, |
8b7ea2d4 WZ |
2527 | &ctx->xin->flow, ODPP_NONE); |
2528 | } | |
2529 | ||
2530 | static void | |
2531 | add_ipfix_output_action(struct xlate_ctx *ctx, odp_port_t port) | |
2532 | { | |
2533 | compose_ipfix_action(ctx->xbridge, ctx->xout->odp_actions, | |
2534 | &ctx->xin->flow, port); | |
9583bc14 EJ |
2535 | } |
2536 | ||
2537 | /* Fix SAMPLE action according to data collected while composing ODP actions. | |
2538 | * We need to fix SAMPLE actions OVS_SAMPLE_ATTR_ACTIONS attribute, i.e. nested | |
2539 | * USERSPACE action's user-cookie which is required for sflow. */ | |
2540 | static void | |
2541 | fix_sflow_action(struct xlate_ctx *ctx) | |
2542 | { | |
2543 | const struct flow *base = &ctx->base_flow; | |
2544 | union user_action_cookie *cookie; | |
2545 | ||
2546 | if (!ctx->user_cookie_offset) { | |
2547 | return; | |
2548 | } | |
2549 | ||
cc377352 | 2550 | cookie = ofpbuf_at(ctx->xout->odp_actions, ctx->user_cookie_offset, |
9583bc14 EJ |
2551 | sizeof cookie->sflow); |
2552 | ovs_assert(cookie->type == USER_ACTION_COOKIE_SFLOW); | |
2553 | ||
46c88433 | 2554 | compose_sflow_cookie(ctx->xbridge, base->vlan_tci, |
9583bc14 EJ |
2555 | ctx->sflow_odp_port, ctx->sflow_n_outputs, cookie); |
2556 | } | |
2557 | ||
db7d4e46 | 2558 | static enum slow_path_reason |
642dc74d | 2559 | process_special(struct xlate_ctx *ctx, const struct flow *flow, |
cf62fa4c | 2560 | const struct xport *xport, const struct dp_packet *packet) |
db7d4e46 | 2561 | { |
642dc74d | 2562 | struct flow_wildcards *wc = &ctx->xout->wc; |
46c88433 | 2563 | const struct xbridge *xbridge = ctx->xbridge; |
642dc74d | 2564 | |
46c88433 | 2565 | if (!xport) { |
db7d4e46 | 2566 | return 0; |
46c88433 | 2567 | } else if (xport->cfm && cfm_should_process_flow(xport->cfm, flow, wc)) { |
db7d4e46 | 2568 | if (packet) { |
46c88433 | 2569 | cfm_process_heartbeat(xport->cfm, packet); |
db7d4e46 JP |
2570 | } |
2571 | return SLOW_CFM; | |
fab52e16 | 2572 | } else if (xport->bfd && bfd_should_process_flow(xport->bfd, flow, wc)) { |
db7d4e46 | 2573 | if (packet) { |
46c88433 | 2574 | bfd_process_packet(xport->bfd, flow, packet); |
60d02c72 AW |
2575 | /* If POLL received, immediately sends FINAL back. */ |
2576 | if (bfd_should_send_packet(xport->bfd)) { | |
6d308b28 | 2577 | ofproto_dpif_monitor_port_send_soon(xport->ofport); |
60d02c72 | 2578 | } |
db7d4e46 JP |
2579 | } |
2580 | return SLOW_BFD; | |
46c88433 | 2581 | } else if (xport->xbundle && xport->xbundle->lacp |
db7d4e46 JP |
2582 | && flow->dl_type == htons(ETH_TYPE_LACP)) { |
2583 | if (packet) { | |
46c88433 | 2584 | lacp_process_packet(xport->xbundle->lacp, xport->ofport, packet); |
db7d4e46 JP |
2585 | } |
2586 | return SLOW_LACP; | |
9efd308e DV |
2587 | } else if ((xbridge->stp || xbridge->rstp) && |
2588 | stp_should_process_flow(flow, wc)) { | |
db7d4e46 | 2589 | if (packet) { |
f025bcb7 JR |
2590 | xbridge->stp |
2591 | ? stp_process_packet(xport, packet) | |
2592 | : rstp_process_packet(xport, packet); | |
db7d4e46 JP |
2593 | } |
2594 | return SLOW_STP; | |
19aef6ef | 2595 | } else if (xport->lldp && lldp_should_process_flow(xport->lldp, flow)) { |
0477baa9 DF |
2596 | if (packet) { |
2597 | lldp_process_packet(xport->lldp, packet); | |
2598 | } | |
2599 | return SLOW_LLDP; | |
db7d4e46 JP |
2600 | } else { |
2601 | return 0; | |
2602 | } | |
2603 | } | |
2604 | ||
a36de779 PS |
2605 | static int |
2606 | tnl_route_lookup_flow(const struct flow *oflow, | |
2607 | ovs_be32 *ip, struct xport **out_port) | |
2608 | { | |
2609 | char out_dev[IFNAMSIZ]; | |
2610 | struct xbridge *xbridge; | |
2611 | struct xlate_cfg *xcfg; | |
2612 | ovs_be32 gw; | |
2613 | ||
2614 | if (!ovs_router_lookup(oflow->tunnel.ip_dst, out_dev, &gw)) { | |
2615 | return -ENOENT; | |
2616 | } | |
2617 | ||
2618 | if (gw) { | |
2619 | *ip = gw; | |
2620 | } else { | |
2621 | *ip = oflow->tunnel.ip_dst; | |
2622 | } | |
2623 | ||
2624 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
2625 | ovs_assert(xcfg); | |
2626 | ||
2627 | HMAP_FOR_EACH (xbridge, hmap_node, &xcfg->xbridges) { | |
2628 | if (!strncmp(xbridge->name, out_dev, IFNAMSIZ)) { | |
2629 | struct xport *port; | |
2630 | ||
2631 | HMAP_FOR_EACH (port, ofp_node, &xbridge->xports) { | |
2632 | if (!strncmp(netdev_get_name(port->netdev), out_dev, IFNAMSIZ)) { | |
2633 | *out_port = port; | |
2634 | return 0; | |
2635 | } | |
2636 | } | |
2637 | } | |
2638 | } | |
2639 | return -ENOENT; | |
2640 | } | |
2641 | ||
2642 | static int | |
cf62fa4c | 2643 | xlate_flood_packet(struct xbridge *xbridge, struct dp_packet *packet) |
a36de779 PS |
2644 | { |
2645 | struct ofpact_output output; | |
2646 | struct flow flow; | |
2647 | ||
2648 | ofpact_init(&output.ofpact, OFPACT_OUTPUT, sizeof output); | |
2649 | /* Use OFPP_NONE as the in_port to avoid special packet processing. */ | |
cf62fa4c | 2650 | flow_extract(packet, &flow); |
a36de779 PS |
2651 | flow.in_port.ofp_port = OFPP_NONE; |
2652 | output.port = OFPP_FLOOD; | |
2653 | output.max_len = 0; | |
2654 | ||
2655 | return ofproto_dpif_execute_actions(xbridge->ofproto, &flow, NULL, | |
2656 | &output.ofpact, sizeof output, | |
2657 | packet); | |
2658 | } | |
2659 | ||
2660 | static void | |
2661 | tnl_send_arp_request(const struct xport *out_dev, const uint8_t eth_src[ETH_ADDR_LEN], | |
2662 | ovs_be32 ip_src, ovs_be32 ip_dst) | |
2663 | { | |
2664 | struct xbridge *xbridge = out_dev->xbridge; | |
cf62fa4c | 2665 | struct dp_packet packet; |
a36de779 | 2666 | |
cf62fa4c | 2667 | dp_packet_init(&packet, 0); |
a36de779 PS |
2668 | compose_arp(&packet, eth_src, ip_src, ip_dst); |
2669 | ||
2670 | xlate_flood_packet(xbridge, &packet); | |
cf62fa4c | 2671 | dp_packet_uninit(&packet); |
a36de779 PS |
2672 | } |
2673 | ||
2674 | static int | |
2675 | build_tunnel_send(const struct xlate_ctx *ctx, const struct xport *xport, | |
2676 | const struct flow *flow, odp_port_t tunnel_odp_port) | |
2677 | { | |
2678 | struct ovs_action_push_tnl tnl_push_data; | |
2679 | struct xport *out_dev = NULL; | |
2680 | ovs_be32 s_ip, d_ip = 0; | |
2681 | uint8_t smac[ETH_ADDR_LEN]; | |
2682 | uint8_t dmac[ETH_ADDR_LEN]; | |
2683 | int err; | |
2684 | ||
2685 | err = tnl_route_lookup_flow(flow, &d_ip, &out_dev); | |
2686 | if (err) { | |
2687 | return err; | |
2688 | } | |
2689 | ||
2690 | /* Use mac addr of bridge port of the peer. */ | |
2691 | err = netdev_get_etheraddr(out_dev->netdev, smac); | |
2692 | if (err) { | |
2693 | return err; | |
2694 | } | |
2695 | ||
2696 | err = netdev_get_in4(out_dev->netdev, (struct in_addr *) &s_ip, NULL); | |
2697 | if (err) { | |
2698 | return err; | |
2699 | } | |
2700 | ||
2701 | err = tnl_arp_lookup(out_dev->xbridge->name, d_ip, dmac); | |
2702 | if (err) { | |
2703 | tnl_send_arp_request(out_dev, smac, s_ip, d_ip); | |
2704 | return err; | |
2705 | } | |
2706 | if (ctx->xin->xcache) { | |
2707 | struct xc_entry *entry; | |
2708 | ||
2709 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_TNL_ARP); | |
8742957c BP |
2710 | ovs_strlcpy(entry->u.tnl_arp_cache.br_name, out_dev->xbridge->name, |
2711 | sizeof entry->u.tnl_arp_cache.br_name); | |
a36de779 PS |
2712 | entry->u.tnl_arp_cache.d_ip = d_ip; |
2713 | } | |
2714 | err = tnl_port_build_header(xport->ofport, flow, | |
2715 | dmac, smac, s_ip, &tnl_push_data); | |
2716 | if (err) { | |
2717 | return err; | |
2718 | } | |
2719 | tnl_push_data.tnl_port = odp_to_u32(tunnel_odp_port); | |
2720 | tnl_push_data.out_port = odp_to_u32(out_dev->odp_port); | |
2721 | odp_put_tnl_push_action(ctx->xout->odp_actions, &tnl_push_data); | |
2722 | return 0; | |
2723 | } | |
2724 | ||
9583bc14 | 2725 | static void |
4e022ec0 | 2726 | compose_output_action__(struct xlate_ctx *ctx, ofp_port_t ofp_port, |
e93ef1c7 | 2727 | const struct xlate_bond_recirc *xr, bool check_stp) |
9583bc14 | 2728 | { |
46c88433 | 2729 | const struct xport *xport = get_ofp_port(ctx->xbridge, ofp_port); |
1dd35f8a | 2730 | struct flow_wildcards *wc = &ctx->xout->wc; |
33bf9176 | 2731 | struct flow *flow = &ctx->xin->flow; |
a36de779 | 2732 | struct flow_tnl flow_tnl; |
9583bc14 | 2733 | ovs_be16 flow_vlan_tci; |
1362e248 | 2734 | uint32_t flow_pkt_mark; |
9583bc14 | 2735 | uint8_t flow_nw_tos; |
4e022ec0 | 2736 | odp_port_t out_port, odp_port; |
a36de779 | 2737 | bool tnl_push_pop_send = false; |
ca077186 | 2738 | uint8_t dscp; |
9583bc14 EJ |
2739 | |
2740 | /* If 'struct flow' gets additional metadata, we'll need to zero it out | |
2741 | * before traversing a patch port. */ | |
ac6073e3 | 2742 | BUILD_ASSERT_DECL(FLOW_WC_SEQ == 31); |
a36de779 | 2743 | memset(&flow_tnl, 0, sizeof flow_tnl); |
9583bc14 | 2744 | |
46c88433 | 2745 | if (!xport) { |
9583bc14 EJ |
2746 | xlate_report(ctx, "Nonexistent output port"); |
2747 | return; | |
46c88433 | 2748 | } else if (xport->config & OFPUTIL_PC_NO_FWD) { |
9583bc14 EJ |
2749 | xlate_report(ctx, "OFPPC_NO_FWD set, skipping output"); |
2750 | return; | |
0d1cee12 | 2751 | } else if (check_stp) { |
bbbca389 | 2752 | if (is_stp(&ctx->base_flow)) { |
9efd308e DV |
2753 | if (!xport_stp_should_forward_bpdu(xport) && |
2754 | !xport_rstp_should_manage_bpdu(xport)) { | |
2755 | if (ctx->xbridge->stp != NULL) { | |
2756 | xlate_report(ctx, "STP not in listening state, " | |
2757 | "skipping bpdu output"); | |
2758 | } else if (ctx->xbridge->rstp != NULL) { | |
2759 | xlate_report(ctx, "RSTP not managing BPDU in this state, " | |
2760 | "skipping bpdu output"); | |
2761 | } | |
0d1cee12 K |
2762 | return; |
2763 | } | |
9efd308e DV |
2764 | } else if (!xport_stp_forward_state(xport) || |
2765 | !xport_rstp_forward_state(xport)) { | |
2766 | if (ctx->xbridge->stp != NULL) { | |
2767 | xlate_report(ctx, "STP not in forwarding state, " | |
2768 | "skipping output"); | |
2769 | } else if (ctx->xbridge->rstp != NULL) { | |
2770 | xlate_report(ctx, "RSTP not in forwarding state, " | |
2771 | "skipping output"); | |
2772 | } | |
0d1cee12 K |
2773 | return; |
2774 | } | |
9583bc14 EJ |
2775 | } |
2776 | ||
46c88433 EJ |
2777 | if (mbridge_has_mirrors(ctx->xbridge->mbridge) && xport->xbundle) { |
2778 | ctx->xout->mirrors |= xbundle_mirror_dst(xport->xbundle->xbridge, | |
2779 | xport->xbundle); | |
cdf5d3a5 EJ |
2780 | } |
2781 | ||
46c88433 EJ |
2782 | if (xport->peer) { |
2783 | const struct xport *peer = xport->peer; | |
9583bc14 | 2784 | struct flow old_flow = ctx->xin->flow; |
7f5fe537 | 2785 | bool old_was_mpls = ctx->was_mpls; |
18721c4a | 2786 | cls_version_t old_version = ctx->tables_version; |
9583bc14 | 2787 | enum slow_path_reason special; |
1774d762 JR |
2788 | struct ofpbuf old_stack = ctx->stack; |
2789 | union mf_subvalue new_stack[1024 / sizeof(union mf_subvalue)]; | |
ed9c9e3e JR |
2790 | struct ofpbuf old_action_set = ctx->action_set; |
2791 | uint64_t actset_stub[1024 / 8]; | |
9583bc14 | 2792 | |
1774d762 | 2793 | ofpbuf_use_stub(&ctx->stack, new_stack, sizeof new_stack); |
ed9c9e3e | 2794 | ofpbuf_use_stub(&ctx->action_set, actset_stub, sizeof actset_stub); |
46c88433 EJ |
2795 | ctx->xbridge = peer->xbridge; |
2796 | flow->in_port.ofp_port = peer->ofp_port; | |
33bf9176 BP |
2797 | flow->metadata = htonll(0); |
2798 | memset(&flow->tunnel, 0, sizeof flow->tunnel); | |
2799 | memset(flow->regs, 0, sizeof flow->regs); | |
c61f3870 | 2800 | flow->actset_output = OFPP_UNSET; |
9583bc14 | 2801 | |
621b8064 JR |
2802 | /* The bridge is now known so obtain its table version. */ |
2803 | ctx->tables_version | |
2804 | = ofproto_dpif_get_tables_version(ctx->xbridge->ofproto); | |
2805 | ||
642dc74d | 2806 | special = process_special(ctx, &ctx->xin->flow, peer, |
9583bc14 EJ |
2807 | ctx->xin->packet); |
2808 | if (special) { | |
04594cd5 | 2809 | ctx->xout->slow |= special; |
ddd3c975 | 2810 | } else if (may_receive(peer, ctx)) { |
9efd308e | 2811 | if (xport_stp_forward_state(peer) && xport_rstp_forward_state(peer)) { |
e672ff9b | 2812 | xlate_table_action(ctx, flow->in_port.ofp_port, 0, true, true); |
ed9c9e3e | 2813 | if (ctx->action_set.size) { |
e672ff9b JR |
2814 | /* Translate action set only if not dropping the packet and |
2815 | * not recirculating. */ | |
2816 | if (!exit_recirculates(ctx)) { | |
2817 | xlate_action_set(ctx); | |
2818 | } | |
2819 | } | |
2820 | /* Check if need to recirculate. */ | |
2821 | if (exit_recirculates(ctx)) { | |
2822 | compose_recirculate_action(ctx); | |
ed9c9e3e | 2823 | } |
9583bc14 | 2824 | } else { |
9efd308e DV |
2825 | /* Forwarding is disabled by STP and RSTP. Let OFPP_NORMAL and |
2826 | * the learning action look at the packet, then drop it. */ | |
9583bc14 | 2827 | struct flow old_base_flow = ctx->base_flow; |
6fd6ed71 | 2828 | size_t old_size = ctx->xout->odp_actions->size; |
cdf5d3a5 | 2829 | mirror_mask_t old_mirrors = ctx->xout->mirrors; |
f3d5b473 | 2830 | |
e672ff9b | 2831 | xlate_table_action(ctx, flow->in_port.ofp_port, 0, true, true); |
cdf5d3a5 | 2832 | ctx->xout->mirrors = old_mirrors; |
9583bc14 | 2833 | ctx->base_flow = old_base_flow; |
6fd6ed71 | 2834 | ctx->xout->odp_actions->size = old_size; |
e672ff9b JR |
2835 | |
2836 | /* Undo changes that may have been done for recirculation. */ | |
2837 | if (exit_recirculates(ctx)) { | |
2838 | ctx->action_set.size = ctx->recirc_action_offset; | |
2839 | ctx->recirc_action_offset = -1; | |
2840 | ctx->last_unroll_offset = -1; | |
2841 | } | |
9583bc14 EJ |
2842 | } |
2843 | } | |
2844 | ||
2845 | ctx->xin->flow = old_flow; | |
832554e3 | 2846 | ctx->xbridge = xport->xbridge; |
ed9c9e3e JR |
2847 | ofpbuf_uninit(&ctx->action_set); |
2848 | ctx->action_set = old_action_set; | |
1774d762 JR |
2849 | ofpbuf_uninit(&ctx->stack); |
2850 | ctx->stack = old_stack; | |
9583bc14 | 2851 | |
621b8064 JR |
2852 | /* Restore calling bridge's lookup version. */ |
2853 | ctx->tables_version = old_version; | |
2854 | ||
7f5fe537 JR |
2855 | /* The peer bridge popping MPLS should have no effect on the original |
2856 | * bridge. */ | |
2857 | ctx->was_mpls = old_was_mpls; | |
2858 | ||
f3d5b473 JR |
2859 | /* The fact that the peer bridge exits (for any reason) does not mean |
2860 | * that the original bridge should exit. Specifically, if the peer | |
2861 | * bridge recirculates (which typically modifies the packet), the | |
2862 | * original bridge must continue processing with the original, not the | |
2863 | * recirculated packet! */ | |
2864 | ctx->exit = false; | |
2865 | ||
9583bc14 | 2866 | if (ctx->xin->resubmit_stats) { |
46c88433 EJ |
2867 | netdev_vport_inc_tx(xport->netdev, ctx->xin->resubmit_stats); |
2868 | netdev_vport_inc_rx(peer->netdev, ctx->xin->resubmit_stats); | |
a1aeea86 AW |
2869 | if (peer->bfd) { |
2870 | bfd_account_rx(peer->bfd, ctx->xin->resubmit_stats); | |
2871 | } | |
9583bc14 | 2872 | } |
b256dc52 JS |
2873 | if (ctx->xin->xcache) { |
2874 | struct xc_entry *entry; | |
2875 | ||
2876 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_NETDEV); | |
2877 | entry->u.dev.tx = netdev_ref(xport->netdev); | |
2878 | entry->u.dev.rx = netdev_ref(peer->netdev); | |
2879 | entry->u.dev.bfd = bfd_ref(peer->bfd); | |
2880 | } | |
9583bc14 EJ |
2881 | return; |
2882 | } | |
2883 | ||
33bf9176 | 2884 | flow_vlan_tci = flow->vlan_tci; |
1362e248 | 2885 | flow_pkt_mark = flow->pkt_mark; |
33bf9176 | 2886 | flow_nw_tos = flow->nw_tos; |
9583bc14 | 2887 | |
16194afd DDP |
2888 | if (count_skb_priorities(xport)) { |
2889 | memset(&wc->masks.skb_priority, 0xff, sizeof wc->masks.skb_priority); | |
2890 | if (dscp_from_skb_priority(xport, flow->skb_priority, &dscp)) { | |
2891 | wc->masks.nw_tos |= IP_DSCP_MASK; | |
2892 | flow->nw_tos &= ~IP_DSCP_MASK; | |
2893 | flow->nw_tos |= dscp; | |
2894 | } | |
9583bc14 EJ |
2895 | } |
2896 | ||
46c88433 | 2897 | if (xport->is_tunnel) { |
9583bc14 EJ |
2898 | /* Save tunnel metadata so that changes made due to |
2899 | * the Logical (tunnel) Port are not visible for any further | |
2900 | * matches, while explicit set actions on tunnel metadata are. | |
2901 | */ | |
a36de779 | 2902 | flow_tnl = flow->tunnel; |
46c88433 | 2903 | odp_port = tnl_port_send(xport->ofport, flow, &ctx->xout->wc); |
4e022ec0 | 2904 | if (odp_port == ODPP_NONE) { |
9583bc14 EJ |
2905 | xlate_report(ctx, "Tunneling decided against output"); |
2906 | goto out; /* restore flow_nw_tos */ | |
2907 | } | |
33bf9176 | 2908 | if (flow->tunnel.ip_dst == ctx->orig_tunnel_ip_dst) { |
9583bc14 EJ |
2909 | xlate_report(ctx, "Not tunneling to our own address"); |
2910 | goto out; /* restore flow_nw_tos */ | |
2911 | } | |
2912 | if (ctx->xin->resubmit_stats) { | |
46c88433 | 2913 | netdev_vport_inc_tx(xport->netdev, ctx->xin->resubmit_stats); |
9583bc14 | 2914 | } |
b256dc52 JS |
2915 | if (ctx->xin->xcache) { |
2916 | struct xc_entry *entry; | |
2917 | ||
2918 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_NETDEV); | |
2919 | entry->u.dev.tx = netdev_ref(xport->netdev); | |
2920 | } | |
9583bc14 | 2921 | out_port = odp_port; |
a36de779 PS |
2922 | if (ovs_native_tunneling_is_on(ctx->xbridge->ofproto)) { |
2923 | tnl_push_pop_send = true; | |
2924 | } else { | |
2925 | commit_odp_tunnel_action(flow, &ctx->base_flow, | |
2926 | ctx->xout->odp_actions); | |
2927 | flow->tunnel = flow_tnl; /* Restore tunnel metadata */ | |
2928 | } | |
9583bc14 | 2929 | } else { |
46c88433 | 2930 | odp_port = xport->odp_port; |
7614e5d0 | 2931 | out_port = odp_port; |
46c88433 | 2932 | if (ofproto_has_vlan_splinters(ctx->xbridge->ofproto)) { |
7614e5d0 JR |
2933 | ofp_port_t vlandev_port; |
2934 | ||
1dd35f8a | 2935 | wc->masks.vlan_tci |= htons(VLAN_VID_MASK | VLAN_CFI); |
7614e5d0 JR |
2936 | vlandev_port = vsp_realdev_to_vlandev(ctx->xbridge->ofproto, |
2937 | ofp_port, flow->vlan_tci); | |
2938 | if (vlandev_port != ofp_port) { | |
2939 | out_port = ofp_port_to_odp_port(ctx->xbridge, vlandev_port); | |
2940 | flow->vlan_tci = htons(0); | |
2941 | } | |
9583bc14 | 2942 | } |
9583bc14 | 2943 | } |
9583bc14 | 2944 | |
4e022ec0 | 2945 | if (out_port != ODPP_NONE) { |
b440dd8c JS |
2946 | bool use_masked = ctx->xbridge->support.masked_set_action; |
2947 | ||
7fd91025 | 2948 | ctx->xout->slow |= commit_odp_actions(flow, &ctx->base_flow, |
cc377352 | 2949 | ctx->xout->odp_actions, |
b440dd8c | 2950 | wc, use_masked); |
adcf00ba | 2951 | |
e93ef1c7 | 2952 | if (xr) { |
347bf289 | 2953 | struct ovs_action_hash *act_hash; |
adcf00ba | 2954 | |
347bf289 | 2955 | /* Hash action. */ |
cc377352 | 2956 | act_hash = nl_msg_put_unspec_uninit(ctx->xout->odp_actions, |
347bf289 AZ |
2957 | OVS_ACTION_ATTR_HASH, |
2958 | sizeof *act_hash); | |
2959 | act_hash->hash_alg = xr->hash_alg; | |
62ac1f20 | 2960 | act_hash->hash_basis = xr->hash_basis; |
347bf289 AZ |
2961 | |
2962 | /* Recirc action. */ | |
cc377352 | 2963 | nl_msg_put_u32(ctx->xout->odp_actions, OVS_ACTION_ATTR_RECIRC, |
347bf289 | 2964 | xr->recirc_id); |
adcf00ba | 2965 | } else { |
a36de779 PS |
2966 | |
2967 | if (tnl_push_pop_send) { | |
2968 | build_tunnel_send(ctx, xport, flow, odp_port); | |
2969 | flow->tunnel = flow_tnl; /* Restore tunnel metadata */ | |
2970 | } else { | |
2971 | odp_port_t odp_tnl_port = ODPP_NONE; | |
2972 | ||
2973 | /* XXX: Write better Filter for tunnel port. We can use inport | |
2974 | * int tunnel-port flow to avoid these checks completely. */ | |
2975 | if (ofp_port == OFPP_LOCAL && | |
2976 | ovs_native_tunneling_is_on(ctx->xbridge->ofproto)) { | |
2977 | ||
2978 | odp_tnl_port = tnl_port_map_lookup(flow, wc); | |
2979 | } | |
2980 | ||
2981 | if (odp_tnl_port != ODPP_NONE) { | |
2982 | nl_msg_put_odp_port(ctx->xout->odp_actions, | |
2983 | OVS_ACTION_ATTR_TUNNEL_POP, | |
2984 | odp_tnl_port); | |
2985 | } else { | |
2986 | /* Tunnel push-pop action is not compatible with | |
2987 | * IPFIX action. */ | |
2988 | add_ipfix_output_action(ctx, out_port); | |
2989 | nl_msg_put_odp_port(ctx->xout->odp_actions, | |
2990 | OVS_ACTION_ATTR_OUTPUT, | |
2991 | out_port); | |
2992 | } | |
2993 | } | |
adcf00ba | 2994 | } |
9583bc14 | 2995 | |
6cbbf4fa EJ |
2996 | ctx->sflow_odp_port = odp_port; |
2997 | ctx->sflow_n_outputs++; | |
2998 | ctx->xout->nf_output_iface = ofp_port; | |
2999 | } | |
3000 | ||
3001 | out: | |
9583bc14 | 3002 | /* Restore flow */ |
33bf9176 | 3003 | flow->vlan_tci = flow_vlan_tci; |
1362e248 | 3004 | flow->pkt_mark = flow_pkt_mark; |
33bf9176 | 3005 | flow->nw_tos = flow_nw_tos; |
9583bc14 EJ |
3006 | } |
3007 | ||
3008 | static void | |
e93ef1c7 JR |
3009 | compose_output_action(struct xlate_ctx *ctx, ofp_port_t ofp_port, |
3010 | const struct xlate_bond_recirc *xr) | |
9583bc14 | 3011 | { |
e93ef1c7 | 3012 | compose_output_action__(ctx, ofp_port, xr, true); |
9583bc14 EJ |
3013 | } |
3014 | ||
bb61b33d BP |
3015 | static void |
3016 | xlate_recursively(struct xlate_ctx *ctx, struct rule_dpif *rule) | |
bb61b33d BP |
3017 | { |
3018 | struct rule_dpif *old_rule = ctx->rule; | |
8b1e5560 | 3019 | ovs_be64 old_cookie = ctx->rule_cookie; |
dc723c44 | 3020 | const struct rule_actions *actions; |
bb61b33d BP |
3021 | |
3022 | if (ctx->xin->resubmit_stats) { | |
70742c7f | 3023 | rule_dpif_credit_stats(rule, ctx->xin->resubmit_stats); |
bb61b33d BP |
3024 | } |
3025 | ||
98b07853 | 3026 | ctx->resubmits++; |
bb61b33d BP |
3027 | ctx->recurse++; |
3028 | ctx->rule = rule; | |
8b1e5560 | 3029 | ctx->rule_cookie = rule_dpif_get_flow_cookie(rule); |
6f00e29b BP |
3030 | actions = rule_dpif_get_actions(rule); |
3031 | do_xlate_actions(actions->ofpacts, actions->ofpacts_len, ctx); | |
8b1e5560 | 3032 | ctx->rule_cookie = old_cookie; |
bb61b33d BP |
3033 | ctx->rule = old_rule; |
3034 | ctx->recurse--; | |
bb61b33d BP |
3035 | } |
3036 | ||
bd3240ba SH |
3037 | static bool |
3038 | xlate_resubmit_resource_check(struct xlate_ctx *ctx) | |
9583bc14 | 3039 | { |
98b07853 BP |
3040 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); |
3041 | ||
adcf00ba | 3042 | if (ctx->recurse >= MAX_RESUBMIT_RECURSION + MAX_INTERNAL_RESUBMITS) { |
98b07853 BP |
3043 | VLOG_ERR_RL(&rl, "resubmit actions recursed over %d times", |
3044 | MAX_RESUBMIT_RECURSION); | |
adcf00ba | 3045 | } else if (ctx->resubmits >= MAX_RESUBMITS + MAX_INTERNAL_RESUBMITS) { |
98b07853 | 3046 | VLOG_ERR_RL(&rl, "over %d resubmit actions", MAX_RESUBMITS); |
6fd6ed71 | 3047 | } else if (ctx->xout->odp_actions->size > UINT16_MAX) { |
98b07853 | 3048 | VLOG_ERR_RL(&rl, "resubmits yielded over 64 kB of actions"); |
6fd6ed71 | 3049 | } else if (ctx->stack.size >= 65536) { |
98b07853 BP |
3050 | VLOG_ERR_RL(&rl, "resubmits yielded over 64 kB of stack"); |
3051 | } else { | |
bd3240ba SH |
3052 | return true; |
3053 | } | |
3054 | ||
3055 | return false; | |
3056 | } | |
3057 | ||
3058 | static void | |
6d328fa2 SH |
3059 | xlate_table_action(struct xlate_ctx *ctx, ofp_port_t in_port, uint8_t table_id, |
3060 | bool may_packet_in, bool honor_table_miss) | |
bd3240ba | 3061 | { |
1d741d6d JR |
3062 | /* Check if we need to recirculate before matching in a table. */ |
3063 | if (ctx->was_mpls) { | |
3064 | ctx_trigger_recirculation(ctx); | |
3065 | return; | |
3066 | } | |
bd3240ba | 3067 | if (xlate_resubmit_resource_check(ctx)) { |
34dd0d78 | 3068 | struct flow_wildcards *wc; |
9583bc14 | 3069 | uint8_t old_table_id = ctx->table_id; |
3f207910 | 3070 | struct rule_dpif *rule; |
9583bc14 EJ |
3071 | |
3072 | ctx->table_id = table_id; | |
34dd0d78 | 3073 | wc = (ctx->xin->skip_wildcards) ? NULL : &ctx->xout->wc; |
9583bc14 | 3074 | |
34dd0d78 | 3075 | rule = rule_dpif_lookup_from_table(ctx->xbridge->ofproto, |
621b8064 | 3076 | ctx->tables_version, |
34dd0d78 JR |
3077 | &ctx->xin->flow, wc, |
3078 | ctx->xin->xcache != NULL, | |
3079 | ctx->xin->resubmit_stats, | |
3080 | &ctx->table_id, in_port, | |
3081 | may_packet_in, honor_table_miss); | |
9583bc14 | 3082 | |
a8c31348 BP |
3083 | if (OVS_UNLIKELY(ctx->xin->resubmit_hook)) { |
3084 | ctx->xin->resubmit_hook(ctx->xin, rule, ctx->recurse + 1); | |
ad3efdcb EJ |
3085 | } |
3086 | ||
a2143702 | 3087 | if (rule) { |
83709dfa JR |
3088 | /* Fill in the cache entry here instead of xlate_recursively |
3089 | * to make the reference counting more explicit. We take a | |
3090 | * reference in the lookups above if we are going to cache the | |
3091 | * rule. */ | |
3092 | if (ctx->xin->xcache) { | |
3093 | struct xc_entry *entry; | |
3094 | ||
3095 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_RULE); | |
3096 | entry->u.rule = rule; | |
3097 | } | |
bb61b33d | 3098 | xlate_recursively(ctx, rule); |
ad3efdcb EJ |
3099 | } |
3100 | ||
9583bc14 | 3101 | ctx->table_id = old_table_id; |
98b07853 | 3102 | return; |
9583bc14 | 3103 | } |
98b07853 BP |
3104 | |
3105 | ctx->exit = true; | |
9583bc14 EJ |
3106 | } |
3107 | ||
f4fb341b | 3108 | static void |
1e684d7d RW |
3109 | xlate_group_stats(struct xlate_ctx *ctx, struct group_dpif *group, |
3110 | struct ofputil_bucket *bucket) | |
3111 | { | |
3112 | if (ctx->xin->resubmit_stats) { | |
3113 | group_dpif_credit_stats(group, bucket, ctx->xin->resubmit_stats); | |
3114 | } | |
3115 | if (ctx->xin->xcache) { | |
3116 | struct xc_entry *entry; | |
3117 | ||
3118 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_GROUP); | |
3119 | entry->u.group.group = group_dpif_ref(group); | |
3120 | entry->u.group.bucket = bucket; | |
3121 | } | |
3122 | } | |
3123 | ||
3124 | static void | |
3125 | xlate_group_bucket(struct xlate_ctx *ctx, struct ofputil_bucket *bucket) | |
f4fb341b SH |
3126 | { |
3127 | uint64_t action_list_stub[1024 / 8]; | |
3128 | struct ofpbuf action_list, action_set; | |
5b09e569 JR |
3129 | struct flow old_flow = ctx->xin->flow; |
3130 | bool old_was_mpls = ctx->was_mpls; | |
f4fb341b SH |
3131 | |
3132 | ofpbuf_use_const(&action_set, bucket->ofpacts, bucket->ofpacts_len); | |
3133 | ofpbuf_use_stub(&action_list, action_list_stub, sizeof action_list_stub); | |
3134 | ||
3135 | ofpacts_execute_action_set(&action_list, &action_set); | |
3136 | ctx->recurse++; | |
6fd6ed71 | 3137 | do_xlate_actions(action_list.data, action_list.size, ctx); |
f4fb341b SH |
3138 | ctx->recurse--; |
3139 | ||
3140 | ofpbuf_uninit(&action_set); | |
3141 | ofpbuf_uninit(&action_list); | |
5b09e569 | 3142 | |
e672ff9b JR |
3143 | /* Check if need to recirculate. */ |
3144 | if (exit_recirculates(ctx)) { | |
3145 | compose_recirculate_action(ctx); | |
3146 | } | |
3147 | ||
5b09e569 JR |
3148 | /* Roll back flow to previous state. |
3149 | * This is equivalent to cloning the packet for each bucket. | |
3150 | * | |
3151 | * As a side effect any subsequently applied actions will | |
3152 | * also effectively be applied to a clone of the packet taken | |
3153 | * just before applying the all or indirect group. | |
3154 | * | |
3155 | * Note that group buckets are action sets, hence they cannot modify the | |
3156 | * main action set. Also any stack actions are ignored when executing an | |
3157 | * action set, so group buckets cannot change the stack either. | |
3158 | * However, we do allow resubmit actions in group buckets, which could | |
3159 | * break the above assumptions. It is up to the controller to not mess up | |
3160 | * with the action_set and stack in the tables resubmitted to from | |
3161 | * group buckets. */ | |
3162 | ctx->xin->flow = old_flow; | |
3163 | ||
3164 | /* The group bucket popping MPLS should have no effect after bucket | |
3165 | * execution. */ | |
3166 | ctx->was_mpls = old_was_mpls; | |
3167 | ||
3168 | /* The fact that the group bucket exits (for any reason) does not mean that | |
3169 | * the translation after the group action should exit. Specifically, if | |
3170 | * the group bucket recirculates (which typically modifies the packet), the | |
3171 | * actions after the group action must continue processing with the | |
3172 | * original, not the recirculated packet! */ | |
3173 | ctx->exit = false; | |
f4fb341b SH |
3174 | } |
3175 | ||
3176 | static void | |
3177 | xlate_all_group(struct xlate_ctx *ctx, struct group_dpif *group) | |
3178 | { | |
1e684d7d | 3179 | struct ofputil_bucket *bucket; |
ca6ba700 | 3180 | const struct ovs_list *buckets; |
f4fb341b SH |
3181 | |
3182 | group_dpif_get_buckets(group, &buckets); | |
3183 | ||
3184 | LIST_FOR_EACH (bucket, list_node, buckets) { | |
3185 | xlate_group_bucket(ctx, bucket); | |
f4fb341b | 3186 | } |
1e684d7d | 3187 | xlate_group_stats(ctx, group, NULL); |
f4fb341b SH |
3188 | } |
3189 | ||
dd8cd4b4 SH |
3190 | static void |
3191 | xlate_ff_group(struct xlate_ctx *ctx, struct group_dpif *group) | |
3192 | { | |
1e684d7d | 3193 | struct ofputil_bucket *bucket; |
dd8cd4b4 SH |
3194 | |
3195 | bucket = group_first_live_bucket(ctx, group, 0); | |
3196 | if (bucket) { | |
3197 | xlate_group_bucket(ctx, bucket); | |
1e684d7d | 3198 | xlate_group_stats(ctx, group, bucket); |
dd8cd4b4 SH |
3199 | } |
3200 | } | |
3201 | ||
fe7e5749 | 3202 | static void |
7565c3e4 | 3203 | xlate_default_select_group(struct xlate_ctx *ctx, struct group_dpif *group) |
fe7e5749 SH |
3204 | { |
3205 | struct flow_wildcards *wc = &ctx->xout->wc; | |
1e684d7d | 3206 | struct ofputil_bucket *bucket; |
fe7e5749 SH |
3207 | uint32_t basis; |
3208 | ||
1d1aae0b | 3209 | basis = flow_hash_symmetric_l4(&ctx->xin->flow, 0); |
80e3509d | 3210 | flow_mask_hash_fields(&ctx->xin->flow, wc, NX_HASH_FIELDS_SYMMETRIC_L4); |
fe7e5749 SH |
3211 | bucket = group_best_live_bucket(ctx, group, basis); |
3212 | if (bucket) { | |
fe7e5749 | 3213 | xlate_group_bucket(ctx, bucket); |
1e684d7d | 3214 | xlate_group_stats(ctx, group, bucket); |
fe7e5749 SH |
3215 | } |
3216 | } | |
3217 | ||
0c4b9393 SH |
3218 | static void |
3219 | xlate_hash_fields_select_group(struct xlate_ctx *ctx, struct group_dpif *group) | |
3220 | { | |
3221 | struct mf_bitmap hash_fields = MF_BITMAP_INITIALIZER; | |
3222 | struct flow_wildcards *wc = &ctx->xout->wc; | |
3223 | const struct field_array *fields; | |
3224 | struct ofputil_bucket *bucket; | |
3225 | uint32_t basis; | |
3226 | int i; | |
3227 | ||
3228 | fields = group_dpif_get_fields(group); | |
3229 | basis = hash_uint64(group_dpif_get_selection_method_param(group)); | |
3230 | ||
3231 | /* Determine which fields to hash */ | |
3232 | for (i = 0; i < MFF_N_IDS; i++) { | |
3233 | if (bitmap_is_set(fields->used.bm, i)) { | |
3234 | const struct mf_field *mf; | |
3235 | ||
3236 | /* If the field is already present in 'hash_fields' then | |
3237 | * this loop has already checked that it and its pre-requisites | |
3238 | * are present in the flow and its pre-requisites have | |
3239 | * already been added to 'hash_fields'. There is nothing more | |
3240 | * to do here and as an optimisation the loop can continue. */ | |
3241 | if (bitmap_is_set(hash_fields.bm, i)) { | |
3242 | continue; | |
3243 | } | |
3244 | ||
3245 | mf = mf_from_id(i); | |
3246 | ||
3247 | /* Only hash a field if it and its pre-requisites are present | |
3248 | * in the flow. */ | |
3249 | if (!mf_are_prereqs_ok(mf, &ctx->xin->flow)) { | |
3250 | continue; | |
3251 | } | |
3252 | ||
3253 | /* Hash both the field and its pre-requisites */ | |
3254 | mf_bitmap_set_field_and_prereqs(mf, &hash_fields); | |
3255 | } | |
3256 | } | |
3257 | ||
3258 | /* Hash the fields */ | |
3259 | for (i = 0; i < MFF_N_IDS; i++) { | |
3260 | if (bitmap_is_set(hash_fields.bm, i)) { | |
3261 | const struct mf_field *mf = mf_from_id(i); | |
3262 | union mf_value value; | |
3263 | int j; | |
3264 | ||
3265 | mf_get_value(mf, &ctx->xin->flow, &value); | |
3266 | /* This seems inefficient but so does apply_mask() */ | |
3267 | for (j = 0; j < mf->n_bytes; j++) { | |
3268 | ((uint8_t *) &value)[j] &= ((uint8_t *) &fields->value[i])[j]; | |
3269 | } | |
3270 | basis = hash_bytes(&value, mf->n_bytes, basis); | |
3271 | ||
3272 | mf_mask_field(mf, &wc->masks); | |
3273 | } | |
3274 | } | |
3275 | ||
3276 | bucket = group_best_live_bucket(ctx, group, basis); | |
3277 | if (bucket) { | |
3278 | xlate_group_bucket(ctx, bucket); | |
3279 | xlate_group_stats(ctx, group, bucket); | |
3280 | } | |
3281 | } | |
3282 | ||
7565c3e4 SH |
3283 | static void |
3284 | xlate_select_group(struct xlate_ctx *ctx, struct group_dpif *group) | |
3285 | { | |
3286 | const char *selection_method = group_dpif_get_selection_method(group); | |
3287 | ||
3288 | if (selection_method[0] == '\0') { | |
3289 | xlate_default_select_group(ctx, group); | |
0c4b9393 SH |
3290 | } else if (!strcasecmp("hash", selection_method)) { |
3291 | xlate_hash_fields_select_group(ctx, group); | |
7565c3e4 SH |
3292 | } else { |
3293 | /* Parsing of groups should ensure this never happens */ | |
3294 | OVS_NOT_REACHED(); | |
3295 | } | |
3296 | } | |
3297 | ||
f4fb341b SH |
3298 | static void |
3299 | xlate_group_action__(struct xlate_ctx *ctx, struct group_dpif *group) | |
3300 | { | |
5a070238 BP |
3301 | ctx->in_group = true; |
3302 | ||
f4fb341b SH |
3303 | switch (group_dpif_get_type(group)) { |
3304 | case OFPGT11_ALL: | |
3305 | case OFPGT11_INDIRECT: | |
3306 | xlate_all_group(ctx, group); | |
3307 | break; | |
3308 | case OFPGT11_SELECT: | |
fe7e5749 | 3309 | xlate_select_group(ctx, group); |
f4fb341b | 3310 | break; |
dd8cd4b4 SH |
3311 | case OFPGT11_FF: |
3312 | xlate_ff_group(ctx, group); | |
3313 | break; | |
f4fb341b | 3314 | default: |
428b2edd | 3315 | OVS_NOT_REACHED(); |
f4fb341b | 3316 | } |
809c7548 | 3317 | group_dpif_unref(group); |
5a070238 BP |
3318 | |
3319 | ctx->in_group = false; | |
3320 | } | |
3321 | ||
3322 | static bool | |
3323 | xlate_group_resource_check(struct xlate_ctx *ctx) | |
3324 | { | |
3325 | if (!xlate_resubmit_resource_check(ctx)) { | |
3326 | return false; | |
3327 | } else if (ctx->in_group) { | |
3328 | /* Prevent nested translation of OpenFlow groups. | |
3329 | * | |
3330 | * OpenFlow allows this restriction. We enforce this restriction only | |
3331 | * because, with the current architecture, we would otherwise have to | |
3332 | * take a possibly recursive read lock on the ofgroup rwlock, which is | |
3333 | * unsafe given that POSIX allows taking a read lock to block if there | |
3334 | * is a thread blocked on taking the write lock. Other solutions | |
3335 | * without this restriction are also possible, but seem unwarranted | |
3336 | * given the current limited use of groups. */ | |
3337 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); | |
3338 | ||
3339 | VLOG_ERR_RL(&rl, "cannot recursively translate OpenFlow group"); | |
3340 | return false; | |
3341 | } else { | |
3342 | return true; | |
3343 | } | |
f4fb341b SH |
3344 | } |
3345 | ||
3346 | static bool | |
3347 | xlate_group_action(struct xlate_ctx *ctx, uint32_t group_id) | |
3348 | { | |
5a070238 | 3349 | if (xlate_group_resource_check(ctx)) { |
f4fb341b SH |
3350 | struct group_dpif *group; |
3351 | bool got_group; | |
3352 | ||
3353 | got_group = group_dpif_lookup(ctx->xbridge->ofproto, group_id, &group); | |
3354 | if (got_group) { | |
3355 | xlate_group_action__(ctx, group); | |
3356 | } else { | |
3357 | return true; | |
3358 | } | |
3359 | } | |
3360 | ||
3361 | return false; | |
3362 | } | |
3363 | ||
9583bc14 EJ |
3364 | static void |
3365 | xlate_ofpact_resubmit(struct xlate_ctx *ctx, | |
3366 | const struct ofpact_resubmit *resubmit) | |
3367 | { | |
4e022ec0 | 3368 | ofp_port_t in_port; |
9583bc14 | 3369 | uint8_t table_id; |
adcf00ba AZ |
3370 | bool may_packet_in = false; |
3371 | bool honor_table_miss = false; | |
3372 | ||
3373 | if (ctx->rule && rule_dpif_is_internal(ctx->rule)) { | |
3374 | /* Still allow missed packets to be sent to the controller | |
3375 | * if resubmitting from an internal table. */ | |
3376 | may_packet_in = true; | |
3377 | honor_table_miss = true; | |
3378 | } | |
9583bc14 EJ |
3379 | |
3380 | in_port = resubmit->in_port; | |
3381 | if (in_port == OFPP_IN_PORT) { | |
4e022ec0 | 3382 | in_port = ctx->xin->flow.in_port.ofp_port; |
9583bc14 EJ |
3383 | } |
3384 | ||
3385 | table_id = resubmit->table_id; | |
3386 | if (table_id == 255) { | |
3387 | table_id = ctx->table_id; | |
3388 | } | |
3389 | ||
adcf00ba AZ |
3390 | xlate_table_action(ctx, in_port, table_id, may_packet_in, |
3391 | honor_table_miss); | |
9583bc14 EJ |
3392 | } |
3393 | ||
3394 | static void | |
3395 | flood_packets(struct xlate_ctx *ctx, bool all) | |
3396 | { | |
46c88433 | 3397 | const struct xport *xport; |
9583bc14 | 3398 | |
46c88433 EJ |
3399 | HMAP_FOR_EACH (xport, ofp_node, &ctx->xbridge->xports) { |
3400 | if (xport->ofp_port == ctx->xin->flow.in_port.ofp_port) { | |
9583bc14 EJ |
3401 | continue; |
3402 | } | |
3403 | ||
3404 | if (all) { | |
e93ef1c7 | 3405 | compose_output_action__(ctx, xport->ofp_port, NULL, false); |
46c88433 | 3406 | } else if (!(xport->config & OFPUTIL_PC_NO_FLOOD)) { |
e93ef1c7 | 3407 | compose_output_action(ctx, xport->ofp_port, NULL); |
9583bc14 EJ |
3408 | } |
3409 | } | |
3410 | ||
3411 | ctx->xout->nf_output_iface = NF_OUT_FLOOD; | |
3412 | } | |
3413 | ||
3414 | static void | |
3415 | execute_controller_action(struct xlate_ctx *ctx, int len, | |
3416 | enum ofp_packet_in_reason reason, | |
3417 | uint16_t controller_id) | |
3418 | { | |
0fb7792a | 3419 | struct ofproto_packet_in *pin; |
e14deea0 | 3420 | struct dp_packet *packet; |
b440dd8c | 3421 | bool use_masked; |
9583bc14 | 3422 | |
04594cd5 | 3423 | ctx->xout->slow |= SLOW_CONTROLLER; |
9583bc14 EJ |
3424 | if (!ctx->xin->packet) { |
3425 | return; | |
3426 | } | |
3427 | ||
cf62fa4c | 3428 | packet = dp_packet_clone(ctx->xin->packet); |
9583bc14 | 3429 | |
b440dd8c | 3430 | use_masked = ctx->xbridge->support.masked_set_action; |
7fd91025 | 3431 | ctx->xout->slow |= commit_odp_actions(&ctx->xin->flow, &ctx->base_flow, |
cc377352 | 3432 | ctx->xout->odp_actions, |
b440dd8c | 3433 | &ctx->xout->wc, use_masked); |
9583bc14 | 3434 | |
41ccaa24 | 3435 | odp_execute_actions(NULL, &packet, 1, false, |
6fd6ed71 PS |
3436 | ctx->xout->odp_actions->data, |
3437 | ctx->xout->odp_actions->size, NULL); | |
9583bc14 | 3438 | |
ada3a58d | 3439 | pin = xmalloc(sizeof *pin); |
cf62fa4c PS |
3440 | pin->up.packet_len = dp_packet_size(packet); |
3441 | pin->up.packet = dp_packet_steal_data(packet); | |
0fb7792a | 3442 | pin->up.reason = reason; |
0fb7792a | 3443 | pin->up.table_id = ctx->table_id; |
8b1e5560 | 3444 | pin->up.cookie = ctx->rule_cookie; |
0fb7792a | 3445 | |
50dcbd8e | 3446 | flow_get_metadata(&ctx->xin->flow, &pin->up.flow_metadata); |
9583bc14 | 3447 | |
f11c7538 | 3448 | pin->controller_id = controller_id; |
d38a3c7b | 3449 | pin->send_len = len; |
32260212 SH |
3450 | /* If a rule is a table-miss rule then this is |
3451 | * a table-miss handled by a table-miss rule. | |
3452 | * | |
3453 | * Else, if rule is internal and has a controller action, | |
3454 | * the later being implied by the rule being processed here, | |
3455 | * then this is a table-miss handled without a table-miss rule. | |
3456 | * | |
3457 | * Otherwise this is not a table-miss. */ | |
3458 | pin->miss_type = OFPROTO_PACKET_IN_NO_MISS; | |
3459 | if (ctx->rule) { | |
3460 | if (rule_dpif_is_table_miss(ctx->rule)) { | |
3461 | pin->miss_type = OFPROTO_PACKET_IN_MISS_FLOW; | |
3462 | } else if (rule_dpif_is_internal(ctx->rule)) { | |
3463 | pin->miss_type = OFPROTO_PACKET_IN_MISS_WITHOUT_FLOW; | |
3464 | } | |
3465 | } | |
ada3a58d | 3466 | ofproto_dpif_send_packet_in(ctx->xbridge->ofproto, pin); |
e14deea0 | 3467 | dp_packet_delete(packet); |
9583bc14 EJ |
3468 | } |
3469 | ||
e672ff9b | 3470 | /* Called only when ctx->recirc_action_offset is set. */ |
7bbdd84f | 3471 | static void |
e672ff9b | 3472 | compose_recirculate_action(struct xlate_ctx *ctx) |
7bbdd84f | 3473 | { |
e672ff9b | 3474 | struct recirc_metadata md; |
b440dd8c | 3475 | bool use_masked; |
7bbdd84f | 3476 | uint32_t id; |
7bbdd84f | 3477 | |
b440dd8c | 3478 | use_masked = ctx->xbridge->support.masked_set_action; |
e672ff9b JR |
3479 | ctx->xout->slow |= commit_odp_actions(&ctx->xin->flow, &ctx->base_flow, |
3480 | ctx->xout->odp_actions, | |
b440dd8c | 3481 | &ctx->xout->wc, use_masked); |
7bbdd84f | 3482 | |
e672ff9b | 3483 | recirc_metadata_from_flow(&md, &ctx->xin->flow); |
7bbdd84f | 3484 | |
e672ff9b | 3485 | ovs_assert(ctx->recirc_action_offset >= 0); |
7bbdd84f | 3486 | |
e672ff9b JR |
3487 | /* Only allocate recirculation ID if we have a packet. */ |
3488 | if (ctx->xin->packet) { | |
3489 | /* Allocate a unique recirc id for the given metadata state in the | |
3490 | * flow. The life-cycle of this recirc id is managed by associating it | |
3491 | * with the udpif key ('ukey') created for each new datapath flow. */ | |
3492 | id = recirc_alloc_id_ctx(ctx->xbridge->ofproto, 0, &md, &ctx->stack, | |
3493 | ctx->recirc_action_offset, | |
3494 | ctx->action_set.size, ctx->action_set.data); | |
3495 | if (!id) { | |
3496 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
3497 | VLOG_ERR_RL(&rl, "Failed to allocate recirculation id"); | |
3498 | return; | |
e2676b44 | 3499 | } |
e672ff9b JR |
3500 | xlate_out_add_recirc(ctx->xout, id); |
3501 | } else { | |
3502 | /* Look up an existing recirc id for the given metadata state in the | |
3503 | * flow. No new reference is taken, as the ID is RCU protected and is | |
3504 | * only required temporarily for verification. */ | |
3505 | id = recirc_find_id(ctx->xbridge->ofproto, 0, &md, &ctx->stack, | |
3506 | ctx->recirc_action_offset, | |
3507 | ctx->action_set.size, ctx->action_set.data); | |
3508 | /* We let zero 'id' to be used in the RECIRC action below, which will | |
3509 | * fail all revalidations as zero is not a valid recirculation ID. */ | |
7bbdd84f SH |
3510 | } |
3511 | ||
cc377352 | 3512 | nl_msg_put_u32(ctx->xout->odp_actions, OVS_ACTION_ATTR_RECIRC, id); |
e672ff9b JR |
3513 | |
3514 | /* Undo changes done by recirculation. */ | |
3515 | ctx->action_set.size = ctx->recirc_action_offset; | |
3516 | ctx->recirc_action_offset = -1; | |
3517 | ctx->last_unroll_offset = -1; | |
7bbdd84f SH |
3518 | } |
3519 | ||
8bfd0fda BP |
3520 | static void |
3521 | compose_mpls_push_action(struct xlate_ctx *ctx, struct ofpact_push_mpls *mpls) | |
9583bc14 | 3522 | { |
33bf9176 BP |
3523 | struct flow_wildcards *wc = &ctx->xout->wc; |
3524 | struct flow *flow = &ctx->xin->flow; | |
8bfd0fda | 3525 | int n; |
33bf9176 | 3526 | |
8bfd0fda | 3527 | ovs_assert(eth_type_mpls(mpls->ethertype)); |
b0a17866 | 3528 | |
8bfd0fda BP |
3529 | n = flow_count_mpls_labels(flow, wc); |
3530 | if (!n) { | |
b440dd8c JS |
3531 | bool use_masked = ctx->xbridge->support.masked_set_action; |
3532 | ||
8bfd0fda | 3533 | ctx->xout->slow |= commit_odp_actions(flow, &ctx->base_flow, |
cc377352 | 3534 | ctx->xout->odp_actions, |
b440dd8c | 3535 | &ctx->xout->wc, use_masked); |
8bfd0fda BP |
3536 | } else if (n >= FLOW_MAX_MPLS_LABELS) { |
3537 | if (ctx->xin->packet != NULL) { | |
3538 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
3539 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet on which an " | |
3540 | "MPLS push action can't be performed as it would " | |
3541 | "have more MPLS LSEs than the %d supported.", | |
3542 | ctx->xbridge->name, FLOW_MAX_MPLS_LABELS); | |
9583bc14 | 3543 | } |
8bfd0fda BP |
3544 | ctx->exit = true; |
3545 | return; | |
9583bc14 | 3546 | } |
b0a17866 | 3547 | |
8bfd0fda | 3548 | flow_push_mpls(flow, n, mpls->ethertype, wc); |
9583bc14 EJ |
3549 | } |
3550 | ||
8bfd0fda | 3551 | static void |
9cfef3d0 | 3552 | compose_mpls_pop_action(struct xlate_ctx *ctx, ovs_be16 eth_type) |
9583bc14 | 3553 | { |
33bf9176 | 3554 | struct flow_wildcards *wc = &ctx->xout->wc; |
8bfd0fda BP |
3555 | struct flow *flow = &ctx->xin->flow; |
3556 | int n = flow_count_mpls_labels(flow, wc); | |
33bf9176 | 3557 | |
7bbdd84f | 3558 | if (flow_pop_mpls(flow, n, eth_type, wc)) { |
b440dd8c | 3559 | if (ctx->xbridge->support.recirc) { |
7bbdd84f SH |
3560 | ctx->was_mpls = true; |
3561 | } | |
3562 | } else if (n >= FLOW_MAX_MPLS_LABELS) { | |
8bfd0fda BP |
3563 | if (ctx->xin->packet != NULL) { |
3564 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
3565 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet on which an " | |
3566 | "MPLS pop action can't be performed as it has " | |
3567 | "more MPLS LSEs than the %d supported.", | |
3568 | ctx->xbridge->name, FLOW_MAX_MPLS_LABELS); | |
3569 | } | |
3570 | ctx->exit = true; | |
cc377352 | 3571 | ofpbuf_clear(ctx->xout->odp_actions); |
9583bc14 EJ |
3572 | } |
3573 | } | |
3574 | ||
3575 | static bool | |
3576 | compose_dec_ttl(struct xlate_ctx *ctx, struct ofpact_cnt_ids *ids) | |
3577 | { | |
33bf9176 BP |
3578 | struct flow *flow = &ctx->xin->flow; |
3579 | ||
3580 | if (!is_ip_any(flow)) { | |
9583bc14 EJ |
3581 | return false; |
3582 | } | |
3583 | ||
1dd35f8a | 3584 | ctx->xout->wc.masks.nw_ttl = 0xff; |
33bf9176 BP |
3585 | if (flow->nw_ttl > 1) { |
3586 | flow->nw_ttl--; | |
9583bc14 EJ |
3587 | return false; |
3588 | } else { | |
3589 | size_t i; | |
3590 | ||
3591 | for (i = 0; i < ids->n_controllers; i++) { | |
3592 | execute_controller_action(ctx, UINT16_MAX, OFPR_INVALID_TTL, | |
3593 | ids->cnt_ids[i]); | |
3594 | } | |
3595 | ||
3596 | /* Stop processing for current table. */ | |
3597 | return true; | |
3598 | } | |
3599 | } | |
3600 | ||
8bfd0fda | 3601 | static void |
097d4939 JR |
3602 | compose_set_mpls_label_action(struct xlate_ctx *ctx, ovs_be32 label) |
3603 | { | |
8bfd0fda BP |
3604 | if (eth_type_mpls(ctx->xin->flow.dl_type)) { |
3605 | ctx->xout->wc.masks.mpls_lse[0] |= htonl(MPLS_LABEL_MASK); | |
3606 | set_mpls_lse_label(&ctx->xin->flow.mpls_lse[0], label); | |
097d4939 | 3607 | } |
097d4939 JR |
3608 | } |
3609 | ||
8bfd0fda | 3610 | static void |
097d4939 JR |
3611 | compose_set_mpls_tc_action(struct xlate_ctx *ctx, uint8_t tc) |
3612 | { | |
8bfd0fda BP |
3613 | if (eth_type_mpls(ctx->xin->flow.dl_type)) { |
3614 | ctx->xout->wc.masks.mpls_lse[0] |= htonl(MPLS_TC_MASK); | |
3615 | set_mpls_lse_tc(&ctx->xin->flow.mpls_lse[0], tc); | |
097d4939 | 3616 | } |
097d4939 JR |
3617 | } |
3618 | ||
8bfd0fda | 3619 | static void |
9cfef3d0 | 3620 | compose_set_mpls_ttl_action(struct xlate_ctx *ctx, uint8_t ttl) |
9583bc14 | 3621 | { |
8bfd0fda BP |
3622 | if (eth_type_mpls(ctx->xin->flow.dl_type)) { |
3623 | ctx->xout->wc.masks.mpls_lse[0] |= htonl(MPLS_TTL_MASK); | |
3624 | set_mpls_lse_ttl(&ctx->xin->flow.mpls_lse[0], ttl); | |
b0a17866 | 3625 | } |
9583bc14 EJ |
3626 | } |
3627 | ||
3628 | static bool | |
9cfef3d0 | 3629 | compose_dec_mpls_ttl_action(struct xlate_ctx *ctx) |
9583bc14 | 3630 | { |
33bf9176 | 3631 | struct flow *flow = &ctx->xin->flow; |
1dd35f8a JP |
3632 | struct flow_wildcards *wc = &ctx->xout->wc; |
3633 | ||
8bfd0fda | 3634 | if (eth_type_mpls(flow->dl_type)) { |
22d38fca JR |
3635 | uint8_t ttl = mpls_lse_to_ttl(flow->mpls_lse[0]); |
3636 | ||
3637 | wc->masks.mpls_lse[0] |= htonl(MPLS_TTL_MASK); | |
8bfd0fda BP |
3638 | if (ttl > 1) { |
3639 | ttl--; | |
3640 | set_mpls_lse_ttl(&flow->mpls_lse[0], ttl); | |
3641 | return false; | |
3642 | } else { | |
3643 | execute_controller_action(ctx, UINT16_MAX, OFPR_INVALID_TTL, 0); | |
8bfd0fda | 3644 | } |
9583bc14 | 3645 | } |
22d38fca JR |
3646 | |
3647 | /* Stop processing for current table. */ | |
3648 | return true; | |
9583bc14 EJ |
3649 | } |
3650 | ||
3651 | static void | |
3652 | xlate_output_action(struct xlate_ctx *ctx, | |
4e022ec0 | 3653 | ofp_port_t port, uint16_t max_len, bool may_packet_in) |
9583bc14 | 3654 | { |
4e022ec0 | 3655 | ofp_port_t prev_nf_output_iface = ctx->xout->nf_output_iface; |
9583bc14 EJ |
3656 | |
3657 | ctx->xout->nf_output_iface = NF_OUT_DROP; | |
3658 | ||
3659 | switch (port) { | |
3660 | case OFPP_IN_PORT: | |
e93ef1c7 | 3661 | compose_output_action(ctx, ctx->xin->flow.in_port.ofp_port, NULL); |
9583bc14 EJ |
3662 | break; |
3663 | case OFPP_TABLE: | |
4e022ec0 | 3664 | xlate_table_action(ctx, ctx->xin->flow.in_port.ofp_port, |
6d328fa2 | 3665 | 0, may_packet_in, true); |
9583bc14 EJ |
3666 | break; |
3667 | case OFPP_NORMAL: | |
3668 | xlate_normal(ctx); | |
3669 | break; | |
3670 | case OFPP_FLOOD: | |
3671 | flood_packets(ctx, false); | |
3672 | break; | |
3673 | case OFPP_ALL: | |
3674 | flood_packets(ctx, true); | |
3675 | break; | |
3676 | case OFPP_CONTROLLER: | |
3a11fd5b | 3677 | execute_controller_action(ctx, max_len, |
029ca940 SS |
3678 | (ctx->in_group ? OFPR_GROUP |
3679 | : ctx->in_action_set ? OFPR_ACTION_SET | |
3680 | : OFPR_ACTION), | |
3681 | 0); | |
9583bc14 EJ |
3682 | break; |
3683 | case OFPP_NONE: | |
3684 | break; | |
3685 | case OFPP_LOCAL: | |
3686 | default: | |
4e022ec0 | 3687 | if (port != ctx->xin->flow.in_port.ofp_port) { |
e93ef1c7 | 3688 | compose_output_action(ctx, port, NULL); |
9583bc14 EJ |
3689 | } else { |
3690 | xlate_report(ctx, "skipping output to input port"); | |
3691 | } | |
3692 | break; | |
3693 | } | |
3694 | ||
3695 | if (prev_nf_output_iface == NF_OUT_FLOOD) { | |
3696 | ctx->xout->nf_output_iface = NF_OUT_FLOOD; | |
3697 | } else if (ctx->xout->nf_output_iface == NF_OUT_DROP) { | |
3698 | ctx->xout->nf_output_iface = prev_nf_output_iface; | |
3699 | } else if (prev_nf_output_iface != NF_OUT_DROP && | |
3700 | ctx->xout->nf_output_iface != NF_OUT_FLOOD) { | |
3701 | ctx->xout->nf_output_iface = NF_OUT_MULTI; | |
3702 | } | |
3703 | } | |
3704 | ||
3705 | static void | |
3706 | xlate_output_reg_action(struct xlate_ctx *ctx, | |
3707 | const struct ofpact_output_reg *or) | |
3708 | { | |
3709 | uint64_t port = mf_get_subfield(&or->src, &ctx->xin->flow); | |
3710 | if (port <= UINT16_MAX) { | |
3711 | union mf_subvalue value; | |
3712 | ||
3713 | memset(&value, 0xff, sizeof value); | |
3714 | mf_write_subfield_flow(&or->src, &value, &ctx->xout->wc.masks); | |
4e022ec0 AW |
3715 | xlate_output_action(ctx, u16_to_ofp(port), |
3716 | or->max_len, false); | |
9583bc14 EJ |
3717 | } |
3718 | } | |
3719 | ||
3720 | static void | |
3721 | xlate_enqueue_action(struct xlate_ctx *ctx, | |
3722 | const struct ofpact_enqueue *enqueue) | |
3723 | { | |
4e022ec0 | 3724 | ofp_port_t ofp_port = enqueue->port; |
9583bc14 EJ |
3725 | uint32_t queue_id = enqueue->queue; |
3726 | uint32_t flow_priority, priority; | |
3727 | int error; | |
3728 | ||
3729 | /* Translate queue to priority. */ | |
89a8a7f0 | 3730 | error = dpif_queue_to_priority(ctx->xbridge->dpif, queue_id, &priority); |
9583bc14 EJ |
3731 | if (error) { |
3732 | /* Fall back to ordinary output action. */ | |
3733 | xlate_output_action(ctx, enqueue->port, 0, false); | |
3734 | return; | |
3735 | } | |
3736 | ||
3737 | /* Check output port. */ | |
3738 | if (ofp_port == OFPP_IN_PORT) { | |
4e022ec0 AW |
3739 | ofp_port = ctx->xin->flow.in_port.ofp_port; |
3740 | } else if (ofp_port == ctx->xin->flow.in_port.ofp_port) { | |
9583bc14 EJ |
3741 | return; |
3742 | } | |
3743 | ||
3744 | /* Add datapath actions. */ | |
3745 | flow_priority = ctx->xin->flow.skb_priority; | |
3746 | ctx->xin->flow.skb_priority = priority; | |
e93ef1c7 | 3747 | compose_output_action(ctx, ofp_port, NULL); |
9583bc14 EJ |
3748 | ctx->xin->flow.skb_priority = flow_priority; |
3749 | ||
3750 | /* Update NetFlow output port. */ | |
3751 | if (ctx->xout->nf_output_iface == NF_OUT_DROP) { | |
3752 | ctx->xout->nf_output_iface = ofp_port; | |
3753 | } else if (ctx->xout->nf_output_iface != NF_OUT_FLOOD) { | |
3754 | ctx->xout->nf_output_iface = NF_OUT_MULTI; | |
3755 | } | |
3756 | } | |
3757 | ||
3758 | static void | |
3759 | xlate_set_queue_action(struct xlate_ctx *ctx, uint32_t queue_id) | |
3760 | { | |
3761 | uint32_t skb_priority; | |
3762 | ||
89a8a7f0 | 3763 | if (!dpif_queue_to_priority(ctx->xbridge->dpif, queue_id, &skb_priority)) { |
9583bc14 EJ |
3764 | ctx->xin->flow.skb_priority = skb_priority; |
3765 | } else { | |
3766 | /* Couldn't translate queue to a priority. Nothing to do. A warning | |
3767 | * has already been logged. */ | |
3768 | } | |
3769 | } | |
3770 | ||
3771 | static bool | |
46c88433 | 3772 | slave_enabled_cb(ofp_port_t ofp_port, void *xbridge_) |
9583bc14 | 3773 | { |
46c88433 EJ |
3774 | const struct xbridge *xbridge = xbridge_; |
3775 | struct xport *port; | |
9583bc14 EJ |
3776 | |
3777 | switch (ofp_port) { | |
3778 | case OFPP_IN_PORT: | |
3779 | case OFPP_TABLE: | |
3780 | case OFPP_NORMAL: | |
3781 | case OFPP_FLOOD: | |
3782 | case OFPP_ALL: | |
3783 | case OFPP_NONE: | |
3784 | return true; | |
3785 | case OFPP_CONTROLLER: /* Not supported by the bundle action. */ | |
3786 | return false; | |
3787 | default: | |
46c88433 | 3788 | port = get_ofp_port(xbridge, ofp_port); |
9583bc14 EJ |
3789 | return port ? port->may_enable : false; |
3790 | } | |
3791 | } | |
3792 | ||
3793 | static void | |
3794 | xlate_bundle_action(struct xlate_ctx *ctx, | |
3795 | const struct ofpact_bundle *bundle) | |
3796 | { | |
4e022ec0 | 3797 | ofp_port_t port; |
9583bc14 EJ |
3798 | |
3799 | port = bundle_execute(bundle, &ctx->xin->flow, &ctx->xout->wc, | |
46c88433 EJ |
3800 | slave_enabled_cb, |
3801 | CONST_CAST(struct xbridge *, ctx->xbridge)); | |
9583bc14 | 3802 | if (bundle->dst.field) { |
f74e7df7 JP |
3803 | nxm_reg_load(&bundle->dst, ofp_to_u16(port), &ctx->xin->flow, |
3804 | &ctx->xout->wc); | |
9583bc14 EJ |
3805 | } else { |
3806 | xlate_output_action(ctx, port, 0, false); | |
3807 | } | |
3808 | } | |
3809 | ||
3810 | static void | |
4165b5e0 JS |
3811 | xlate_learn_action__(struct xlate_ctx *ctx, const struct ofpact_learn *learn, |
3812 | struct ofputil_flow_mod *fm, struct ofpbuf *ofpacts) | |
9583bc14 | 3813 | { |
4165b5e0 JS |
3814 | learn_execute(learn, &ctx->xin->flow, fm, ofpacts); |
3815 | if (ctx->xin->may_learn) { | |
3816 | ofproto_dpif_flow_mod(ctx->xbridge->ofproto, fm); | |
3817 | } | |
3818 | } | |
9583bc14 | 3819 | |
4165b5e0 JS |
3820 | static void |
3821 | xlate_learn_action(struct xlate_ctx *ctx, const struct ofpact_learn *learn) | |
3822 | { | |
9583bc14 | 3823 | ctx->xout->has_learn = true; |
9583bc14 EJ |
3824 | learn_mask(learn, &ctx->xout->wc); |
3825 | ||
b256dc52 JS |
3826 | if (ctx->xin->xcache) { |
3827 | struct xc_entry *entry; | |
3828 | ||
3829 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_LEARN); | |
4165b5e0 JS |
3830 | entry->u.learn.ofproto = ctx->xbridge->ofproto; |
3831 | entry->u.learn.fm = xmalloc(sizeof *entry->u.learn.fm); | |
3832 | entry->u.learn.ofpacts = ofpbuf_new(64); | |
3833 | xlate_learn_action__(ctx, learn, entry->u.learn.fm, | |
3834 | entry->u.learn.ofpacts); | |
3835 | } else if (ctx->xin->may_learn) { | |
3836 | uint64_t ofpacts_stub[1024 / 8]; | |
3837 | struct ofputil_flow_mod fm; | |
3838 | struct ofpbuf ofpacts; | |
3839 | ||
3840 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); | |
3841 | xlate_learn_action__(ctx, learn, &fm, &ofpacts); | |
3842 | ofpbuf_uninit(&ofpacts); | |
b256dc52 JS |
3843 | } |
3844 | } | |
3845 | ||
3846 | static void | |
3847 | xlate_fin_timeout__(struct rule_dpif *rule, uint16_t tcp_flags, | |
3848 | uint16_t idle_timeout, uint16_t hard_timeout) | |
3849 | { | |
3850 | if (tcp_flags & (TCP_FIN | TCP_RST)) { | |
3851 | rule_dpif_reduce_timeouts(rule, idle_timeout, hard_timeout); | |
3852 | } | |
9583bc14 EJ |
3853 | } |
3854 | ||
9583bc14 EJ |
3855 | static void |
3856 | xlate_fin_timeout(struct xlate_ctx *ctx, | |
3857 | const struct ofpact_fin_timeout *oft) | |
3858 | { | |
b256dc52 JS |
3859 | if (ctx->rule) { |
3860 | xlate_fin_timeout__(ctx->rule, ctx->xin->tcp_flags, | |
3861 | oft->fin_idle_timeout, oft->fin_hard_timeout); | |
3862 | if (ctx->xin->xcache) { | |
3863 | struct xc_entry *entry; | |
3864 | ||
3865 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_FIN_TIMEOUT); | |
83709dfa JR |
3866 | /* XC_RULE already holds a reference on the rule, none is taken |
3867 | * here. */ | |
b256dc52 JS |
3868 | entry->u.fin.rule = ctx->rule; |
3869 | entry->u.fin.idle = oft->fin_idle_timeout; | |
3870 | entry->u.fin.hard = oft->fin_hard_timeout; | |
b256dc52 | 3871 | } |
9583bc14 EJ |
3872 | } |
3873 | } | |
3874 | ||
3875 | static void | |
3876 | xlate_sample_action(struct xlate_ctx *ctx, | |
3877 | const struct ofpact_sample *os) | |
3878 | { | |
e824d78d JR |
3879 | union user_action_cookie cookie; |
3880 | /* Scale the probability from 16-bit to 32-bit while representing | |
3881 | * the same percentage. */ | |
3882 | uint32_t probability = (os->probability << 16) | os->probability; | |
b440dd8c | 3883 | bool use_masked; |
e824d78d | 3884 | |
b440dd8c | 3885 | if (!ctx->xbridge->support.variable_length_userdata) { |
e824d78d JR |
3886 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); |
3887 | ||
3888 | VLOG_ERR_RL(&rl, "ignoring NXAST_SAMPLE action because datapath " | |
3889 | "lacks support (needs Linux 3.10+ or kernel module from " | |
3890 | "OVS 1.11+)"); | |
3891 | return; | |
3892 | } | |
3893 | ||
b440dd8c | 3894 | use_masked = ctx->xbridge->support.masked_set_action; |
e824d78d JR |
3895 | ctx->xout->slow |= commit_odp_actions(&ctx->xin->flow, &ctx->base_flow, |
3896 | ctx->xout->odp_actions, | |
b440dd8c | 3897 | &ctx->xout->wc, use_masked); |
e824d78d JR |
3898 | |
3899 | compose_flow_sample_cookie(os->probability, os->collector_set_id, | |
3900 | os->obs_domain_id, os->obs_point_id, &cookie); | |
3901 | compose_sample_action(ctx->xbridge, ctx->xout->odp_actions, | |
3902 | &ctx->xin->flow, probability, &cookie, | |
3903 | sizeof cookie.flow_sample, ODPP_NONE); | |
9583bc14 EJ |
3904 | } |
3905 | ||
3906 | static bool | |
46c88433 | 3907 | may_receive(const struct xport *xport, struct xlate_ctx *ctx) |
9583bc14 | 3908 | { |
bbbca389 | 3909 | if (xport->config & (is_stp(&ctx->xin->flow) |
46c88433 EJ |
3910 | ? OFPUTIL_PC_NO_RECV_STP |
3911 | : OFPUTIL_PC_NO_RECV)) { | |
9583bc14 EJ |
3912 | return false; |
3913 | } | |
3914 | ||
3915 | /* Only drop packets here if both forwarding and learning are | |
3916 | * disabled. If just learning is enabled, we need to have | |
3917 | * OFPP_NORMAL and the learning action have a look at the packet | |
3918 | * before we can drop it. */ | |
9efd308e DV |
3919 | if ((!xport_stp_forward_state(xport) && !xport_stp_learn_state(xport)) || |
3920 | (!xport_rstp_forward_state(xport) && !xport_rstp_learn_state(xport))) { | |
9583bc14 EJ |
3921 | return false; |
3922 | } | |
3923 | ||
3924 | return true; | |
3925 | } | |
3926 | ||
7fdb60a7 SH |
3927 | static void |
3928 | xlate_write_actions(struct xlate_ctx *ctx, const struct ofpact *a) | |
3929 | { | |
c61f3870 BP |
3930 | const struct ofpact_nest *on = ofpact_get_WRITE_ACTIONS(a); |
3931 | size_t on_len = ofpact_nest_get_action_len(on); | |
3932 | const struct ofpact *inner; | |
3933 | ||
3934 | /* Maintain actset_output depending on the contents of the action set: | |
3935 | * | |
3936 | * - OFPP_UNSET, if there is no "output" action. | |
3937 | * | |
3938 | * - The output port, if there is an "output" action and no "group" | |
3939 | * action. | |
3940 | * | |
3941 | * - OFPP_UNSET, if there is a "group" action. | |
3942 | */ | |
3943 | if (!ctx->action_set_has_group) { | |
3944 | OFPACT_FOR_EACH (inner, on->actions, on_len) { | |
3945 | if (inner->type == OFPACT_OUTPUT) { | |
3946 | ctx->xin->flow.actset_output = ofpact_get_OUTPUT(inner)->port; | |
3947 | } else if (inner->type == OFPACT_GROUP) { | |
3948 | ctx->xin->flow.actset_output = OFPP_UNSET; | |
3949 | ctx->action_set_has_group = true; | |
3950 | } | |
3951 | } | |
3952 | } | |
3953 | ||
3954 | ofpbuf_put(&ctx->action_set, on->actions, on_len); | |
7fdb60a7 SH |
3955 | ofpact_pad(&ctx->action_set); |
3956 | } | |
3957 | ||
3958 | static void | |
3959 | xlate_action_set(struct xlate_ctx *ctx) | |
3960 | { | |
3961 | uint64_t action_list_stub[1024 / 64]; | |
3962 | struct ofpbuf action_list; | |
3963 | ||
029ca940 | 3964 | ctx->in_action_set = true; |
7fdb60a7 SH |
3965 | ofpbuf_use_stub(&action_list, action_list_stub, sizeof action_list_stub); |
3966 | ofpacts_execute_action_set(&action_list, &ctx->action_set); | |
ed9c9e3e JR |
3967 | /* Clear the action set, as it is not needed any more. */ |
3968 | ofpbuf_clear(&ctx->action_set); | |
6fd6ed71 | 3969 | do_xlate_actions(action_list.data, action_list.size, ctx); |
029ca940 | 3970 | ctx->in_action_set = false; |
7fdb60a7 SH |
3971 | ofpbuf_uninit(&action_list); |
3972 | } | |
3973 | ||
e672ff9b JR |
3974 | static void |
3975 | recirc_put_unroll_xlate(struct xlate_ctx *ctx) | |
3976 | { | |
3977 | struct ofpact_unroll_xlate *unroll; | |
3978 | ||
3979 | unroll = ctx->last_unroll_offset < 0 | |
3980 | ? NULL | |
3981 | : ALIGNED_CAST(struct ofpact_unroll_xlate *, | |
3982 | (char *)ctx->action_set.data + ctx->last_unroll_offset); | |
3983 | ||
3984 | /* Restore the table_id and rule cookie for a potential PACKET | |
3985 | * IN if needed. */ | |
3986 | if (!unroll || | |
3987 | (ctx->table_id != unroll->rule_table_id | |
3988 | || ctx->rule_cookie != unroll->rule_cookie)) { | |
3989 | ||
3990 | ctx->last_unroll_offset = ctx->action_set.size; | |
3991 | unroll = ofpact_put_UNROLL_XLATE(&ctx->action_set); | |
3992 | unroll->rule_table_id = ctx->table_id; | |
3993 | unroll->rule_cookie = ctx->rule_cookie; | |
3994 | } | |
3995 | } | |
3996 | ||
3997 | ||
3998 | /* Copy remaining actions to the action_set to be executed after recirculation. | |
3999 | * UNROLL_XLATE action is inserted, if not already done so, before actions that | |
4000 | * may generate PACKET_INs from the current table and without matching another | |
4001 | * rule. */ | |
4002 | static void | |
4003 | recirc_unroll_actions(const struct ofpact *ofpacts, size_t ofpacts_len, | |
4004 | struct xlate_ctx *ctx) | |
4005 | { | |
4006 | const struct ofpact *a; | |
4007 | ||
4008 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
4009 | switch (a->type) { | |
4010 | /* May generate PACKET INs. */ | |
4011 | case OFPACT_OUTPUT_REG: | |
4012 | case OFPACT_GROUP: | |
4013 | case OFPACT_OUTPUT: | |
4014 | case OFPACT_CONTROLLER: | |
4015 | case OFPACT_DEC_MPLS_TTL: | |
4016 | case OFPACT_DEC_TTL: | |
4017 | recirc_put_unroll_xlate(ctx); | |
4018 | break; | |
4019 | ||
4020 | /* These may not generate PACKET INs. */ | |
4021 | case OFPACT_SET_TUNNEL: | |
4022 | case OFPACT_REG_MOVE: | |
4023 | case OFPACT_SET_FIELD: | |
4024 | case OFPACT_STACK_PUSH: | |
4025 | case OFPACT_STACK_POP: | |
4026 | case OFPACT_LEARN: | |
4027 | case OFPACT_WRITE_METADATA: | |
4028 | case OFPACT_RESUBMIT: /* May indirectly generate PACKET INs, */ | |
4029 | case OFPACT_GOTO_TABLE: /* but from a different table and rule. */ | |
4030 | case OFPACT_ENQUEUE: | |
4031 | case OFPACT_SET_VLAN_VID: | |
4032 | case OFPACT_SET_VLAN_PCP: | |
4033 | case OFPACT_STRIP_VLAN: | |
4034 | case OFPACT_PUSH_VLAN: | |
4035 | case OFPACT_SET_ETH_SRC: | |
4036 | case OFPACT_SET_ETH_DST: | |
4037 | case OFPACT_SET_IPV4_SRC: | |
4038 | case OFPACT_SET_IPV4_DST: | |
4039 | case OFPACT_SET_IP_DSCP: | |
4040 | case OFPACT_SET_IP_ECN: | |
4041 | case OFPACT_SET_IP_TTL: | |
4042 | case OFPACT_SET_L4_SRC_PORT: | |
4043 | case OFPACT_SET_L4_DST_PORT: | |
4044 | case OFPACT_SET_QUEUE: | |
4045 | case OFPACT_POP_QUEUE: | |
4046 | case OFPACT_PUSH_MPLS: | |
4047 | case OFPACT_POP_MPLS: | |
4048 | case OFPACT_SET_MPLS_LABEL: | |
4049 | case OFPACT_SET_MPLS_TC: | |
4050 | case OFPACT_SET_MPLS_TTL: | |
4051 | case OFPACT_MULTIPATH: | |
4052 | case OFPACT_BUNDLE: | |
4053 | case OFPACT_EXIT: | |
4054 | case OFPACT_UNROLL_XLATE: | |
4055 | case OFPACT_FIN_TIMEOUT: | |
4056 | case OFPACT_CLEAR_ACTIONS: | |
4057 | case OFPACT_WRITE_ACTIONS: | |
4058 | case OFPACT_METER: | |
4059 | case OFPACT_SAMPLE: | |
4060 | break; | |
4061 | ||
4062 | /* These need not be copied for restoration. */ | |
4063 | case OFPACT_NOTE: | |
4064 | case OFPACT_CONJUNCTION: | |
4065 | continue; | |
4066 | } | |
4067 | /* Copy the action over. */ | |
4068 | ofpbuf_put(&ctx->action_set, a, OFPACT_ALIGN(a->len)); | |
4069 | } | |
4070 | } | |
4071 | ||
1d741d6d JR |
4072 | #define CHECK_MPLS_RECIRCULATION() \ |
4073 | if (ctx->was_mpls) { \ | |
4074 | ctx_trigger_recirculation(ctx); \ | |
4075 | break; \ | |
4076 | } | |
4077 | #define CHECK_MPLS_RECIRCULATION_IF(COND) \ | |
4078 | if (COND) { \ | |
4079 | CHECK_MPLS_RECIRCULATION(); \ | |
4080 | } | |
4081 | ||
9583bc14 EJ |
4082 | static void |
4083 | do_xlate_actions(const struct ofpact *ofpacts, size_t ofpacts_len, | |
4084 | struct xlate_ctx *ctx) | |
4085 | { | |
33bf9176 BP |
4086 | struct flow_wildcards *wc = &ctx->xout->wc; |
4087 | struct flow *flow = &ctx->xin->flow; | |
9583bc14 EJ |
4088 | const struct ofpact *a; |
4089 | ||
a36de779 PS |
4090 | if (ovs_native_tunneling_is_on(ctx->xbridge->ofproto)) { |
4091 | tnl_arp_snoop(flow, wc, ctx->xbridge->name); | |
4092 | } | |
f47ea021 JR |
4093 | /* dl_type already in the mask, not set below. */ |
4094 | ||
9583bc14 EJ |
4095 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { |
4096 | struct ofpact_controller *controller; | |
4097 | const struct ofpact_metadata *metadata; | |
b2dd70be JR |
4098 | const struct ofpact_set_field *set_field; |
4099 | const struct mf_field *mf; | |
9583bc14 | 4100 | |
e672ff9b JR |
4101 | if (ctx->exit) { |
4102 | /* Check if need to store the remaining actions for later | |
4103 | * execution. */ | |
4104 | if (exit_recirculates(ctx)) { | |
4105 | recirc_unroll_actions(a, OFPACT_ALIGN(ofpacts_len - | |
4106 | ((uint8_t *)a - | |
4107 | (uint8_t *)ofpacts)), | |
4108 | ctx); | |
4109 | } | |
4110 | break; | |
7bbdd84f SH |
4111 | } |
4112 | ||
9583bc14 EJ |
4113 | switch (a->type) { |
4114 | case OFPACT_OUTPUT: | |
4115 | xlate_output_action(ctx, ofpact_get_OUTPUT(a)->port, | |
4116 | ofpact_get_OUTPUT(a)->max_len, true); | |
4117 | break; | |
4118 | ||
7395c052 | 4119 | case OFPACT_GROUP: |
f4fb341b | 4120 | if (xlate_group_action(ctx, ofpact_get_GROUP(a)->group_id)) { |
1d741d6d | 4121 | /* Group could not be found. */ |
f4fb341b SH |
4122 | return; |
4123 | } | |
7395c052 NZ |
4124 | break; |
4125 | ||
9583bc14 EJ |
4126 | case OFPACT_CONTROLLER: |
4127 | controller = ofpact_get_CONTROLLER(a); | |
4128 | execute_controller_action(ctx, controller->max_len, | |
4129 | controller->reason, | |
4130 | controller->controller_id); | |
4131 | break; | |
4132 | ||
4133 | case OFPACT_ENQUEUE: | |
16194afd DDP |
4134 | memset(&wc->masks.skb_priority, 0xff, |
4135 | sizeof wc->masks.skb_priority); | |
9583bc14 EJ |
4136 | xlate_enqueue_action(ctx, ofpact_get_ENQUEUE(a)); |
4137 | break; | |
4138 | ||
4139 | case OFPACT_SET_VLAN_VID: | |
f74e7df7 | 4140 | wc->masks.vlan_tci |= htons(VLAN_VID_MASK | VLAN_CFI); |
ca287d20 JR |
4141 | if (flow->vlan_tci & htons(VLAN_CFI) || |
4142 | ofpact_get_SET_VLAN_VID(a)->push_vlan_if_needed) { | |
4143 | flow->vlan_tci &= ~htons(VLAN_VID_MASK); | |
4144 | flow->vlan_tci |= (htons(ofpact_get_SET_VLAN_VID(a)->vlan_vid) | |
4145 | | htons(VLAN_CFI)); | |
4146 | } | |
9583bc14 EJ |
4147 | break; |
4148 | ||
4149 | case OFPACT_SET_VLAN_PCP: | |
f74e7df7 | 4150 | wc->masks.vlan_tci |= htons(VLAN_PCP_MASK | VLAN_CFI); |
ca287d20 JR |
4151 | if (flow->vlan_tci & htons(VLAN_CFI) || |
4152 | ofpact_get_SET_VLAN_PCP(a)->push_vlan_if_needed) { | |
4153 | flow->vlan_tci &= ~htons(VLAN_PCP_MASK); | |
4154 | flow->vlan_tci |= htons((ofpact_get_SET_VLAN_PCP(a)->vlan_pcp | |
4155 | << VLAN_PCP_SHIFT) | VLAN_CFI); | |
4156 | } | |
9583bc14 EJ |
4157 | break; |
4158 | ||
4159 | case OFPACT_STRIP_VLAN: | |
f74e7df7 | 4160 | memset(&wc->masks.vlan_tci, 0xff, sizeof wc->masks.vlan_tci); |
33bf9176 | 4161 | flow->vlan_tci = htons(0); |
9583bc14 EJ |
4162 | break; |
4163 | ||
4164 | case OFPACT_PUSH_VLAN: | |
4165 | /* XXX 802.1AD(QinQ) */ | |
f74e7df7 | 4166 | memset(&wc->masks.vlan_tci, 0xff, sizeof wc->masks.vlan_tci); |
33bf9176 | 4167 | flow->vlan_tci = htons(VLAN_CFI); |
9583bc14 EJ |
4168 | break; |
4169 | ||
4170 | case OFPACT_SET_ETH_SRC: | |
f74e7df7 | 4171 | memset(&wc->masks.dl_src, 0xff, sizeof wc->masks.dl_src); |
33bf9176 | 4172 | memcpy(flow->dl_src, ofpact_get_SET_ETH_SRC(a)->mac, ETH_ADDR_LEN); |
9583bc14 EJ |
4173 | break; |
4174 | ||
4175 | case OFPACT_SET_ETH_DST: | |
f74e7df7 | 4176 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); |
33bf9176 | 4177 | memcpy(flow->dl_dst, ofpact_get_SET_ETH_DST(a)->mac, ETH_ADDR_LEN); |
9583bc14 EJ |
4178 | break; |
4179 | ||
4180 | case OFPACT_SET_IPV4_SRC: | |
1d741d6d | 4181 | CHECK_MPLS_RECIRCULATION(); |
33bf9176 | 4182 | if (flow->dl_type == htons(ETH_TYPE_IP)) { |
f47ea021 | 4183 | memset(&wc->masks.nw_src, 0xff, sizeof wc->masks.nw_src); |
33bf9176 | 4184 | flow->nw_src = ofpact_get_SET_IPV4_SRC(a)->ipv4; |
9583bc14 EJ |
4185 | } |
4186 | break; | |
4187 | ||
4188 | case OFPACT_SET_IPV4_DST: | |
1d741d6d | 4189 | CHECK_MPLS_RECIRCULATION(); |
33bf9176 | 4190 | if (flow->dl_type == htons(ETH_TYPE_IP)) { |
f47ea021 | 4191 | memset(&wc->masks.nw_dst, 0xff, sizeof wc->masks.nw_dst); |
33bf9176 | 4192 | flow->nw_dst = ofpact_get_SET_IPV4_DST(a)->ipv4; |
9583bc14 EJ |
4193 | } |
4194 | break; | |
4195 | ||
04f01c24 | 4196 | case OFPACT_SET_IP_DSCP: |
1d741d6d | 4197 | CHECK_MPLS_RECIRCULATION(); |
04f01c24 | 4198 | if (is_ip_any(flow)) { |
f47ea021 | 4199 | wc->masks.nw_tos |= IP_DSCP_MASK; |
33bf9176 | 4200 | flow->nw_tos &= ~IP_DSCP_MASK; |
04f01c24 | 4201 | flow->nw_tos |= ofpact_get_SET_IP_DSCP(a)->dscp; |
9583bc14 EJ |
4202 | } |
4203 | break; | |
4204 | ||
ff14eb7a | 4205 | case OFPACT_SET_IP_ECN: |
1d741d6d | 4206 | CHECK_MPLS_RECIRCULATION(); |
ff14eb7a JR |
4207 | if (is_ip_any(flow)) { |
4208 | wc->masks.nw_tos |= IP_ECN_MASK; | |
4209 | flow->nw_tos &= ~IP_ECN_MASK; | |
4210 | flow->nw_tos |= ofpact_get_SET_IP_ECN(a)->ecn; | |
4211 | } | |
4212 | break; | |
4213 | ||
0c20dbe4 | 4214 | case OFPACT_SET_IP_TTL: |
1d741d6d | 4215 | CHECK_MPLS_RECIRCULATION(); |
0c20dbe4 JR |
4216 | if (is_ip_any(flow)) { |
4217 | wc->masks.nw_ttl = 0xff; | |
4218 | flow->nw_ttl = ofpact_get_SET_IP_TTL(a)->ttl; | |
4219 | } | |
4220 | break; | |
4221 | ||
9583bc14 | 4222 | case OFPACT_SET_L4_SRC_PORT: |
1d741d6d | 4223 | CHECK_MPLS_RECIRCULATION(); |
b8778a0d | 4224 | if (is_ip_any(flow) && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) { |
f47ea021 JR |
4225 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); |
4226 | memset(&wc->masks.tp_src, 0xff, sizeof wc->masks.tp_src); | |
33bf9176 | 4227 | flow->tp_src = htons(ofpact_get_SET_L4_SRC_PORT(a)->port); |
9583bc14 EJ |
4228 | } |
4229 | break; | |
4230 | ||
4231 | case OFPACT_SET_L4_DST_PORT: | |
1d741d6d | 4232 | CHECK_MPLS_RECIRCULATION(); |
b8778a0d | 4233 | if (is_ip_any(flow) && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) { |
f47ea021 JR |
4234 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); |
4235 | memset(&wc->masks.tp_dst, 0xff, sizeof wc->masks.tp_dst); | |
33bf9176 | 4236 | flow->tp_dst = htons(ofpact_get_SET_L4_DST_PORT(a)->port); |
9583bc14 EJ |
4237 | } |
4238 | break; | |
4239 | ||
4240 | case OFPACT_RESUBMIT: | |
4241 | xlate_ofpact_resubmit(ctx, ofpact_get_RESUBMIT(a)); | |
4242 | break; | |
4243 | ||
4244 | case OFPACT_SET_TUNNEL: | |
33bf9176 | 4245 | flow->tunnel.tun_id = htonll(ofpact_get_SET_TUNNEL(a)->tun_id); |
9583bc14 EJ |
4246 | break; |
4247 | ||
4248 | case OFPACT_SET_QUEUE: | |
16194afd DDP |
4249 | memset(&wc->masks.skb_priority, 0xff, |
4250 | sizeof wc->masks.skb_priority); | |
9583bc14 EJ |
4251 | xlate_set_queue_action(ctx, ofpact_get_SET_QUEUE(a)->queue_id); |
4252 | break; | |
4253 | ||
4254 | case OFPACT_POP_QUEUE: | |
16194afd DDP |
4255 | memset(&wc->masks.skb_priority, 0xff, |
4256 | sizeof wc->masks.skb_priority); | |
33bf9176 | 4257 | flow->skb_priority = ctx->orig_skb_priority; |
9583bc14 EJ |
4258 | break; |
4259 | ||
4260 | case OFPACT_REG_MOVE: | |
1d741d6d JR |
4261 | CHECK_MPLS_RECIRCULATION_IF( |
4262 | mf_is_l3_or_higher(ofpact_get_REG_MOVE(a)->dst.field) || | |
4263 | mf_is_l3_or_higher(ofpact_get_REG_MOVE(a)->src.field)); | |
33bf9176 | 4264 | nxm_execute_reg_move(ofpact_get_REG_MOVE(a), flow, wc); |
9583bc14 EJ |
4265 | break; |
4266 | ||
b2dd70be | 4267 | case OFPACT_SET_FIELD: |
1d741d6d JR |
4268 | CHECK_MPLS_RECIRCULATION_IF( |
4269 | mf_is_l3_or_higher(ofpact_get_SET_FIELD(a)->field)); | |
b2dd70be JR |
4270 | set_field = ofpact_get_SET_FIELD(a); |
4271 | mf = set_field->field; | |
b2dd70be JR |
4272 | |
4273 | /* Set field action only ever overwrites packet's outermost | |
4274 | * applicable header fields. Do nothing if no header exists. */ | |
4479846e JR |
4275 | if (mf->id == MFF_VLAN_VID) { |
4276 | wc->masks.vlan_tci |= htons(VLAN_CFI); | |
4277 | if (!(flow->vlan_tci & htons(VLAN_CFI))) { | |
4278 | break; | |
4279 | } | |
4280 | } else if ((mf->id == MFF_MPLS_LABEL || mf->id == MFF_MPLS_TC) | |
4281 | /* 'dl_type' is already unwildcarded. */ | |
4282 | && !eth_type_mpls(flow->dl_type)) { | |
4283 | break; | |
b2dd70be | 4284 | } |
b8778a0d JR |
4285 | /* A flow may wildcard nw_frag. Do nothing if setting a trasport |
4286 | * header field on a packet that does not have them. */ | |
4479846e | 4287 | mf_mask_field_and_prereqs(mf, &wc->masks); |
b8778a0d JR |
4288 | if (mf_are_prereqs_ok(mf, flow)) { |
4289 | mf_set_flow_value_masked(mf, &set_field->value, | |
4290 | &set_field->mask, flow); | |
4291 | } | |
b2dd70be JR |
4292 | break; |
4293 | ||
9583bc14 | 4294 | case OFPACT_STACK_PUSH: |
1d741d6d JR |
4295 | CHECK_MPLS_RECIRCULATION_IF( |
4296 | mf_is_l3_or_higher(ofpact_get_STACK_PUSH(a)->subfield.field)); | |
33bf9176 BP |
4297 | nxm_execute_stack_push(ofpact_get_STACK_PUSH(a), flow, wc, |
4298 | &ctx->stack); | |
9583bc14 EJ |
4299 | break; |
4300 | ||
4301 | case OFPACT_STACK_POP: | |
1d741d6d JR |
4302 | CHECK_MPLS_RECIRCULATION_IF( |
4303 | mf_is_l3_or_higher(ofpact_get_STACK_POP(a)->subfield.field)); | |
f74e7df7 JP |
4304 | nxm_execute_stack_pop(ofpact_get_STACK_POP(a), flow, wc, |
4305 | &ctx->stack); | |
9583bc14 EJ |
4306 | break; |
4307 | ||
4308 | case OFPACT_PUSH_MPLS: | |
1d741d6d JR |
4309 | /* Recirculate if it is an IP packet with a zero ttl. This may |
4310 | * indicate that the packet was previously MPLS and an MPLS pop | |
4311 | * action converted it to IP. In this case recirculating should | |
4312 | * reveal the IP TTL which is used as the basis for a new MPLS | |
4313 | * LSE. */ | |
4314 | CHECK_MPLS_RECIRCULATION_IF( | |
4315 | !flow_count_mpls_labels(flow, wc) | |
4316 | && flow->nw_ttl == 0 | |
4317 | && is_ip_any(flow)); | |
8bfd0fda | 4318 | compose_mpls_push_action(ctx, ofpact_get_PUSH_MPLS(a)); |
9583bc14 EJ |
4319 | break; |
4320 | ||
4321 | case OFPACT_POP_MPLS: | |
1d741d6d | 4322 | CHECK_MPLS_RECIRCULATION(); |
8bfd0fda | 4323 | compose_mpls_pop_action(ctx, ofpact_get_POP_MPLS(a)->ethertype); |
9583bc14 EJ |
4324 | break; |
4325 | ||
097d4939 | 4326 | case OFPACT_SET_MPLS_LABEL: |
1d741d6d | 4327 | CHECK_MPLS_RECIRCULATION(); |
8bfd0fda BP |
4328 | compose_set_mpls_label_action( |
4329 | ctx, ofpact_get_SET_MPLS_LABEL(a)->label); | |
1d741d6d | 4330 | break; |
097d4939 JR |
4331 | |
4332 | case OFPACT_SET_MPLS_TC: | |
1d741d6d | 4333 | CHECK_MPLS_RECIRCULATION(); |
8bfd0fda | 4334 | compose_set_mpls_tc_action(ctx, ofpact_get_SET_MPLS_TC(a)->tc); |
097d4939 JR |
4335 | break; |
4336 | ||
9583bc14 | 4337 | case OFPACT_SET_MPLS_TTL: |
1d741d6d | 4338 | CHECK_MPLS_RECIRCULATION(); |
8bfd0fda | 4339 | compose_set_mpls_ttl_action(ctx, ofpact_get_SET_MPLS_TTL(a)->ttl); |
9583bc14 EJ |
4340 | break; |
4341 | ||
4342 | case OFPACT_DEC_MPLS_TTL: | |
1d741d6d | 4343 | CHECK_MPLS_RECIRCULATION(); |
9cfef3d0 | 4344 | if (compose_dec_mpls_ttl_action(ctx)) { |
ad3efdcb | 4345 | return; |
9583bc14 EJ |
4346 | } |
4347 | break; | |
4348 | ||
4349 | case OFPACT_DEC_TTL: | |
1d741d6d | 4350 | CHECK_MPLS_RECIRCULATION(); |
f74e7df7 | 4351 | wc->masks.nw_ttl = 0xff; |
9583bc14 | 4352 | if (compose_dec_ttl(ctx, ofpact_get_DEC_TTL(a))) { |
ad3efdcb | 4353 | return; |
9583bc14 EJ |
4354 | } |
4355 | break; | |
4356 | ||
4357 | case OFPACT_NOTE: | |
4358 | /* Nothing to do. */ | |
4359 | break; | |
4360 | ||
4361 | case OFPACT_MULTIPATH: | |
1d741d6d | 4362 | CHECK_MPLS_RECIRCULATION(); |
33bf9176 | 4363 | multipath_execute(ofpact_get_MULTIPATH(a), flow, wc); |
9583bc14 EJ |
4364 | break; |
4365 | ||
4366 | case OFPACT_BUNDLE: | |
1d741d6d | 4367 | CHECK_MPLS_RECIRCULATION(); |
9583bc14 EJ |
4368 | xlate_bundle_action(ctx, ofpact_get_BUNDLE(a)); |
4369 | break; | |
4370 | ||
4371 | case OFPACT_OUTPUT_REG: | |
4372 | xlate_output_reg_action(ctx, ofpact_get_OUTPUT_REG(a)); | |
4373 | break; | |
4374 | ||
4375 | case OFPACT_LEARN: | |
1d741d6d | 4376 | CHECK_MPLS_RECIRCULATION(); |
9583bc14 EJ |
4377 | xlate_learn_action(ctx, ofpact_get_LEARN(a)); |
4378 | break; | |
4379 | ||
afc3987b BP |
4380 | case OFPACT_CONJUNCTION: { |
4381 | /* A flow with a "conjunction" action represents part of a special | |
4382 | * kind of "set membership match". Such a flow should not actually | |
4383 | * get executed, but it could via, say, a "packet-out", even though | |
4384 | * that wouldn't be useful. Log it to help debugging. */ | |
4385 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); | |
4386 | VLOG_INFO_RL(&rl, "executing no-op conjunction action"); | |
18080541 | 4387 | break; |
afc3987b | 4388 | } |
18080541 | 4389 | |
9583bc14 EJ |
4390 | case OFPACT_EXIT: |
4391 | ctx->exit = true; | |
4392 | break; | |
4393 | ||
e672ff9b JR |
4394 | case OFPACT_UNROLL_XLATE: { |
4395 | struct ofpact_unroll_xlate *unroll = ofpact_get_UNROLL_XLATE(a); | |
4396 | ||
4397 | /* Restore translation context data that was stored earlier. */ | |
4398 | ctx->table_id = unroll->rule_table_id; | |
4399 | ctx->rule_cookie = unroll->rule_cookie; | |
4400 | break; | |
4401 | } | |
9583bc14 | 4402 | case OFPACT_FIN_TIMEOUT: |
1d741d6d | 4403 | CHECK_MPLS_RECIRCULATION(); |
33bf9176 | 4404 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); |
9583bc14 EJ |
4405 | ctx->xout->has_fin_timeout = true; |
4406 | xlate_fin_timeout(ctx, ofpact_get_FIN_TIMEOUT(a)); | |
4407 | break; | |
4408 | ||
4409 | case OFPACT_CLEAR_ACTIONS: | |
7fdb60a7 | 4410 | ofpbuf_clear(&ctx->action_set); |
c61f3870 BP |
4411 | ctx->xin->flow.actset_output = OFPP_UNSET; |
4412 | ctx->action_set_has_group = false; | |
7fdb60a7 SH |
4413 | break; |
4414 | ||
4415 | case OFPACT_WRITE_ACTIONS: | |
4416 | xlate_write_actions(ctx, a); | |
9583bc14 EJ |
4417 | break; |
4418 | ||
4419 | case OFPACT_WRITE_METADATA: | |
4420 | metadata = ofpact_get_WRITE_METADATA(a); | |
33bf9176 BP |
4421 | flow->metadata &= ~metadata->mask; |
4422 | flow->metadata |= metadata->metadata & metadata->mask; | |
9583bc14 EJ |
4423 | break; |
4424 | ||
638a19b0 JR |
4425 | case OFPACT_METER: |
4426 | /* Not implemented yet. */ | |
4427 | break; | |
4428 | ||
9583bc14 | 4429 | case OFPACT_GOTO_TABLE: { |
9583bc14 | 4430 | struct ofpact_goto_table *ogt = ofpact_get_GOTO_TABLE(a); |
9583bc14 | 4431 | |
7bbdd84f SH |
4432 | /* Allow ctx->table_id == TBL_INTERNAL, which will be greater |
4433 | * than ogt->table_id. This is to allow goto_table actions that | |
4434 | * triggered recirculation: ctx->table_id will be TBL_INTERNAL | |
4435 | * after recirculation. */ | |
4436 | ovs_assert(ctx->table_id == TBL_INTERNAL | |
4437 | || ctx->table_id < ogt->table_id); | |
4468099e | 4438 | xlate_table_action(ctx, ctx->xin->flow.in_port.ofp_port, |
6d328fa2 | 4439 | ogt->table_id, true, true); |
9583bc14 EJ |
4440 | break; |
4441 | } | |
4442 | ||
4443 | case OFPACT_SAMPLE: | |
4444 | xlate_sample_action(ctx, ofpact_get_SAMPLE(a)); | |
4445 | break; | |
4446 | } | |
1d741d6d JR |
4447 | |
4448 | /* Check if need to store this and the remaining actions for later | |
4449 | * execution. */ | |
4450 | if (ctx->exit && ctx_first_recirculation_action(ctx)) { | |
4451 | recirc_unroll_actions(a, OFPACT_ALIGN(ofpacts_len - | |
4452 | ((uint8_t *)a - | |
4453 | (uint8_t *)ofpacts)), | |
4454 | ctx); | |
4455 | break; | |
4456 | } | |
9583bc14 | 4457 | } |
9583bc14 EJ |
4458 | } |
4459 | ||
4460 | void | |
4461 | xlate_in_init(struct xlate_in *xin, struct ofproto_dpif *ofproto, | |
cc377352 EJ |
4462 | const struct flow *flow, ofp_port_t in_port, |
4463 | struct rule_dpif *rule, uint16_t tcp_flags, | |
cf62fa4c | 4464 | const struct dp_packet *packet) |
9583bc14 EJ |
4465 | { |
4466 | xin->ofproto = ofproto; | |
4467 | xin->flow = *flow; | |
cc377352 | 4468 | xin->flow.in_port.ofp_port = in_port; |
c61f3870 | 4469 | xin->flow.actset_output = OFPP_UNSET; |
9583bc14 EJ |
4470 | xin->packet = packet; |
4471 | xin->may_learn = packet != NULL; | |
4472 | xin->rule = rule; | |
b256dc52 | 4473 | xin->xcache = NULL; |
9583bc14 EJ |
4474 | xin->ofpacts = NULL; |
4475 | xin->ofpacts_len = 0; | |
4476 | xin->tcp_flags = tcp_flags; | |
4477 | xin->resubmit_hook = NULL; | |
4478 | xin->report_hook = NULL; | |
4479 | xin->resubmit_stats = NULL; | |
3f207910 | 4480 | xin->skip_wildcards = false; |
cc377352 | 4481 | xin->odp_actions = NULL; |
e672ff9b JR |
4482 | |
4483 | /* Do recirc lookup. */ | |
4484 | xin->recirc = flow->recirc_id | |
4485 | ? recirc_id_node_find(flow->recirc_id) | |
4486 | : NULL; | |
9583bc14 EJ |
4487 | } |
4488 | ||
4489 | void | |
4490 | xlate_out_uninit(struct xlate_out *xout) | |
4491 | { | |
e672ff9b JR |
4492 | if (xout) { |
4493 | if (xout->odp_actions == &xout->odp_actions_buf) { | |
4494 | ofpbuf_uninit(xout->odp_actions); | |
4495 | } | |
4496 | xlate_out_free_recircs(xout); | |
9583bc14 EJ |
4497 | } |
4498 | } | |
4499 | ||
4500 | /* Translates the 'ofpacts_len' bytes of "struct ofpact"s starting at 'ofpacts' | |
4501 | * into datapath actions, using 'ctx', and discards the datapath actions. */ | |
4502 | void | |
4503 | xlate_actions_for_side_effects(struct xlate_in *xin) | |
4504 | { | |
4505 | struct xlate_out xout; | |
4506 | ||
4507 | xlate_actions(xin, &xout); | |
4508 | xlate_out_uninit(&xout); | |
4509 | } | |
4510 | ||
9583bc14 EJ |
4511 | void |
4512 | xlate_out_copy(struct xlate_out *dst, const struct xlate_out *src) | |
4513 | { | |
4514 | dst->wc = src->wc; | |
9583bc14 EJ |
4515 | dst->slow = src->slow; |
4516 | dst->has_learn = src->has_learn; | |
4517 | dst->has_normal = src->has_normal; | |
4518 | dst->has_fin_timeout = src->has_fin_timeout; | |
4519 | dst->nf_output_iface = src->nf_output_iface; | |
4520 | dst->mirrors = src->mirrors; | |
4521 | ||
cc377352 EJ |
4522 | dst->odp_actions = &dst->odp_actions_buf; |
4523 | ofpbuf_use_stub(dst->odp_actions, dst->odp_actions_stub, | |
9583bc14 | 4524 | sizeof dst->odp_actions_stub); |
6fd6ed71 | 4525 | ofpbuf_put(dst->odp_actions, src->odp_actions->data, src->odp_actions->size); |
9583bc14 EJ |
4526 | } |
4527 | \f | |
55954f6e EJ |
4528 | static struct skb_priority_to_dscp * |
4529 | get_skb_priority(const struct xport *xport, uint32_t skb_priority) | |
4530 | { | |
4531 | struct skb_priority_to_dscp *pdscp; | |
4532 | uint32_t hash; | |
4533 | ||
4534 | hash = hash_int(skb_priority, 0); | |
4535 | HMAP_FOR_EACH_IN_BUCKET (pdscp, hmap_node, hash, &xport->skb_priorities) { | |
4536 | if (pdscp->skb_priority == skb_priority) { | |
4537 | return pdscp; | |
4538 | } | |
4539 | } | |
4540 | return NULL; | |
4541 | } | |
4542 | ||
4543 | static bool | |
4544 | dscp_from_skb_priority(const struct xport *xport, uint32_t skb_priority, | |
4545 | uint8_t *dscp) | |
4546 | { | |
4547 | struct skb_priority_to_dscp *pdscp = get_skb_priority(xport, skb_priority); | |
4548 | *dscp = pdscp ? pdscp->dscp : 0; | |
4549 | return pdscp != NULL; | |
4550 | } | |
4551 | ||
16194afd DDP |
4552 | static size_t |
4553 | count_skb_priorities(const struct xport *xport) | |
4554 | { | |
4555 | return hmap_count(&xport->skb_priorities); | |
4556 | } | |
4557 | ||
55954f6e EJ |
4558 | static void |
4559 | clear_skb_priorities(struct xport *xport) | |
4560 | { | |
4561 | struct skb_priority_to_dscp *pdscp, *next; | |
4562 | ||
4563 | HMAP_FOR_EACH_SAFE (pdscp, next, hmap_node, &xport->skb_priorities) { | |
4564 | hmap_remove(&xport->skb_priorities, &pdscp->hmap_node); | |
4565 | free(pdscp); | |
4566 | } | |
4567 | } | |
4568 | ||
ce4a6b76 BP |
4569 | static bool |
4570 | actions_output_to_local_port(const struct xlate_ctx *ctx) | |
4571 | { | |
46c88433 | 4572 | odp_port_t local_odp_port = ofp_port_to_odp_port(ctx->xbridge, OFPP_LOCAL); |
ce4a6b76 BP |
4573 | const struct nlattr *a; |
4574 | unsigned int left; | |
4575 | ||
6fd6ed71 PS |
4576 | NL_ATTR_FOR_EACH_UNSAFE (a, left, ctx->xout->odp_actions->data, |
4577 | ctx->xout->odp_actions->size) { | |
ce4a6b76 BP |
4578 | if (nl_attr_type(a) == OVS_ACTION_ATTR_OUTPUT |
4579 | && nl_attr_get_odp_port(a) == local_odp_port) { | |
4580 | return true; | |
4581 | } | |
4582 | } | |
4583 | return false; | |
4584 | } | |
9583bc14 | 4585 | |
5e2a6702 | 4586 | #if defined(__linux__) |
7d031d7e BP |
4587 | /* Returns the maximum number of packets that the Linux kernel is willing to |
4588 | * queue up internally to certain kinds of software-implemented ports, or the | |
4589 | * default (and rarely modified) value if it cannot be determined. */ | |
4590 | static int | |
4591 | netdev_max_backlog(void) | |
4592 | { | |
4593 | static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER; | |
4594 | static int max_backlog = 1000; /* The normal default value. */ | |
4595 | ||
4596 | if (ovsthread_once_start(&once)) { | |
4597 | static const char filename[] = "/proc/sys/net/core/netdev_max_backlog"; | |
4598 | FILE *stream; | |
4599 | int n; | |
4600 | ||
4601 | stream = fopen(filename, "r"); | |
4602 | if (!stream) { | |
4603 | VLOG_WARN("%s: open failed (%s)", filename, ovs_strerror(errno)); | |
4604 | } else { | |
4605 | if (fscanf(stream, "%d", &n) != 1) { | |
4606 | VLOG_WARN("%s: read error", filename); | |
4607 | } else if (n <= 100) { | |
4608 | VLOG_WARN("%s: unexpectedly small value %d", filename, n); | |
4609 | } else { | |
4610 | max_backlog = n; | |
4611 | } | |
4612 | fclose(stream); | |
4613 | } | |
4614 | ovsthread_once_done(&once); | |
4615 | ||
4616 | VLOG_DBG("%s: using %d max_backlog", filename, max_backlog); | |
4617 | } | |
4618 | ||
4619 | return max_backlog; | |
4620 | } | |
4621 | ||
4622 | /* Counts and returns the number of OVS_ACTION_ATTR_OUTPUT actions in | |
4623 | * 'odp_actions'. */ | |
4624 | static int | |
4625 | count_output_actions(const struct ofpbuf *odp_actions) | |
4626 | { | |
4627 | const struct nlattr *a; | |
4628 | size_t left; | |
4629 | int n = 0; | |
4630 | ||
6fd6ed71 | 4631 | NL_ATTR_FOR_EACH_UNSAFE (a, left, odp_actions->data, odp_actions->size) { |
7d031d7e BP |
4632 | if (a->nla_type == OVS_ACTION_ATTR_OUTPUT) { |
4633 | n++; | |
4634 | } | |
4635 | } | |
4636 | return n; | |
4637 | } | |
5e2a6702 | 4638 | #endif /* defined(__linux__) */ |
7d031d7e BP |
4639 | |
4640 | /* Returns true if 'odp_actions' contains more output actions than the datapath | |
4641 | * can reliably handle in one go. On Linux, this is the value of the | |
4642 | * net.core.netdev_max_backlog sysctl, which limits the maximum number of | |
4643 | * packets that the kernel is willing to queue up for processing while the | |
4644 | * datapath is processing a set of actions. */ | |
4645 | static bool | |
5e2a6702 | 4646 | too_many_output_actions(const struct ofpbuf *odp_actions OVS_UNUSED) |
7d031d7e BP |
4647 | { |
4648 | #ifdef __linux__ | |
6fd6ed71 | 4649 | return (odp_actions->size / NL_A_U32_SIZE > netdev_max_backlog() |
7d031d7e BP |
4650 | && count_output_actions(odp_actions) > netdev_max_backlog()); |
4651 | #else | |
4652 | /* OSes other than Linux might have similar limits, but we don't know how | |
4653 | * to determine them.*/ | |
4654 | return false; | |
4655 | #endif | |
4656 | } | |
4657 | ||
e672ff9b JR |
4658 | /* Translates the flow, actions, or rule in 'xin' into datapath actions in |
4659 | * 'xout'. | |
56450a41 BP |
4660 | * The caller must take responsibility for eventually freeing 'xout', with |
4661 | * xlate_out_uninit(). */ | |
84f0f298 RW |
4662 | void |
4663 | xlate_actions(struct xlate_in *xin, struct xlate_out *xout) | |
9583bc14 | 4664 | { |
84f0f298 | 4665 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
7b7dcc76 | 4666 | struct flow_wildcards *wc = NULL; |
33bf9176 | 4667 | struct flow *flow = &xin->flow; |
10c44245 | 4668 | struct rule_dpif *rule = NULL; |
33bf9176 | 4669 | |
9583bc14 EJ |
4670 | enum slow_path_reason special; |
4671 | const struct ofpact *ofpacts; | |
e672ff9b | 4672 | struct xbridge *xbridge; |
46c88433 | 4673 | struct xport *in_port; |
9583bc14 EJ |
4674 | struct flow orig_flow; |
4675 | struct xlate_ctx ctx; | |
4676 | size_t ofpacts_len; | |
62a7cc71 | 4677 | bool tnl_may_send; |
c56fac1b | 4678 | bool is_icmp; |
9583bc14 | 4679 | |
46c88433 | 4680 | COVERAGE_INC(xlate_actions); |
9583bc14 EJ |
4681 | |
4682 | /* Flow initialization rules: | |
4683 | * - 'base_flow' must match the kernel's view of the packet at the | |
4684 | * time that action processing starts. 'flow' represents any | |
4685 | * transformations we wish to make through actions. | |
4686 | * - By default 'base_flow' and 'flow' are the same since the input | |
4687 | * packet matches the output before any actions are applied. | |
4688 | * - When using VLAN splinters, 'base_flow''s VLAN is set to the value | |
4689 | * of the received packet as seen by the kernel. If we later output | |
4690 | * to another device without any modifications this will cause us to | |
4691 | * insert a new tag since the original one was stripped off by the | |
4692 | * VLAN device. | |
4693 | * - Tunnel metadata as received is retained in 'flow'. This allows | |
4694 | * tunnel metadata matching also in later tables. | |
4695 | * Since a kernel action for setting the tunnel metadata will only be | |
4696 | * generated with actual tunnel output, changing the tunnel metadata | |
4697 | * values in 'flow' (such as tun_id) will only have effect with a later | |
4698 | * tunnel output action. | |
4699 | * - Tunnel 'base_flow' is completely cleared since that is what the | |
4700 | * kernel does. If we wish to maintain the original values an action | |
4701 | * needs to be generated. */ | |
4702 | ||
4703 | ctx.xin = xin; | |
4704 | ctx.xout = xout; | |
46c88433 EJ |
4705 | ctx.xout->slow = 0; |
4706 | ctx.xout->has_learn = false; | |
4707 | ctx.xout->has_normal = false; | |
4708 | ctx.xout->has_fin_timeout = false; | |
4709 | ctx.xout->nf_output_iface = NF_OUT_DROP; | |
4710 | ctx.xout->mirrors = 0; | |
e672ff9b | 4711 | ctx.xout->n_recircs = 0; |
cc377352 EJ |
4712 | |
4713 | xout->odp_actions = xin->odp_actions; | |
4714 | if (!xout->odp_actions) { | |
4715 | xout->odp_actions = &xout->odp_actions_buf; | |
4716 | ofpbuf_use_stub(xout->odp_actions, xout->odp_actions_stub, | |
4717 | sizeof xout->odp_actions_stub); | |
4718 | } | |
4719 | ofpbuf_reserve(xout->odp_actions, NL_A_U32_SIZE); | |
46c88433 | 4720 | |
e672ff9b JR |
4721 | xbridge = xbridge_lookup(xcfg, xin->ofproto); |
4722 | if (!xbridge) { | |
83709dfa | 4723 | return; |
46c88433 | 4724 | } |
e672ff9b JR |
4725 | /* 'ctx.xbridge' may be changed by action processing, whereas 'xbridge' |
4726 | * will remain set on the original input bridge. */ | |
4727 | ctx.xbridge = xbridge; | |
9583bc14 EJ |
4728 | ctx.rule = xin->rule; |
4729 | ||
33bf9176 | 4730 | ctx.base_flow = *flow; |
9583bc14 | 4731 | memset(&ctx.base_flow.tunnel, 0, sizeof ctx.base_flow.tunnel); |
33bf9176 | 4732 | ctx.orig_tunnel_ip_dst = flow->tunnel.ip_dst; |
9583bc14 | 4733 | |
7b7dcc76 JR |
4734 | if (!xin->skip_wildcards) { |
4735 | wc = &xout->wc; | |
4736 | flow_wildcards_init_catchall(wc); | |
4737 | memset(&wc->masks.in_port, 0xff, sizeof wc->masks.in_port); | |
4738 | memset(&wc->masks.dl_type, 0xff, sizeof wc->masks.dl_type); | |
4739 | if (is_ip_any(flow)) { | |
4740 | wc->masks.nw_frag |= FLOW_NW_FRAG_MASK; | |
4741 | } | |
b440dd8c | 4742 | if (xbridge->support.recirc) { |
7b7dcc76 JR |
4743 | /* Always exactly match recirc_id when datapath supports |
4744 | * recirculation. */ | |
4745 | wc->masks.recirc_id = UINT32_MAX; | |
4746 | } | |
e672ff9b | 4747 | if (xbridge->netflow) { |
7b7dcc76 JR |
4748 | netflow_mask_wc(flow, wc); |
4749 | } | |
0934ebba | 4750 | } |
c56fac1b | 4751 | is_icmp = is_icmpv4(flow) || is_icmpv6(flow); |
9583bc14 | 4752 | |
62a7cc71 | 4753 | tnl_may_send = tnl_xlate_init(&ctx.base_flow, flow, wc); |
9583bc14 | 4754 | |
9583bc14 | 4755 | ctx.recurse = 0; |
98b07853 | 4756 | ctx.resubmits = 0; |
5a070238 | 4757 | ctx.in_group = false; |
029ca940 | 4758 | ctx.in_action_set = false; |
33bf9176 | 4759 | ctx.orig_skb_priority = flow->skb_priority; |
9583bc14 | 4760 | ctx.table_id = 0; |
8b1e5560 | 4761 | ctx.rule_cookie = OVS_BE64_MAX; |
9583bc14 | 4762 | ctx.exit = false; |
7bbdd84f | 4763 | ctx.was_mpls = false; |
e672ff9b JR |
4764 | ctx.recirc_action_offset = -1; |
4765 | ctx.last_unroll_offset = -1; | |
4766 | ||
4767 | ctx.action_set_has_group = false; | |
4768 | ofpbuf_use_stub(&ctx.action_set, | |
4769 | ctx.action_set_stub, sizeof ctx.action_set_stub); | |
4770 | ||
4771 | ofpbuf_use_stub(&ctx.stack, ctx.init_stack, sizeof ctx.init_stack); | |
4772 | ||
4773 | /* The in_port of the original packet before recirculation. */ | |
4774 | in_port = get_ofp_port(xbridge, flow->in_port.ofp_port); | |
4775 | ||
4776 | if (xin->recirc) { | |
4777 | const struct recirc_id_node *recirc = xin->recirc; | |
4778 | ||
4779 | if (xin->ofpacts_len > 0 || ctx.rule) { | |
4780 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); | |
4781 | ||
4782 | VLOG_WARN_RL(&rl, "Recirculation conflict (%s)!", | |
4783 | xin->ofpacts_len > 0 | |
4784 | ? "actions" | |
4785 | : "rule"); | |
4786 | return; | |
4787 | } | |
4788 | ||
4789 | /* Set the bridge for post-recirculation processing if needed. */ | |
4790 | if (ctx.xbridge->ofproto != recirc->ofproto) { | |
4791 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
4792 | const struct xbridge *new_bridge = xbridge_lookup(xcfg, | |
4793 | recirc->ofproto); | |
4794 | ||
4795 | if (OVS_UNLIKELY(!new_bridge)) { | |
4796 | /* Drop the packet if the bridge cannot be found. */ | |
4797 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); | |
4798 | VLOG_WARN_RL(&rl, "Recirculation bridge no longer exists."); | |
4799 | return; | |
4800 | } | |
4801 | ctx.xbridge = new_bridge; | |
4802 | } | |
4803 | ||
4804 | /* Set the post-recirculation table id. Note: A table lookup is done | |
4805 | * only if there are no post-recirculation actions. */ | |
4806 | ctx.table_id = recirc->table_id; | |
4807 | ||
4808 | /* Restore pipeline metadata. May change flow's in_port and other | |
4809 | * metadata to the values that existed when recirculation was | |
4810 | * triggered. */ | |
4811 | recirc_metadata_to_flow(&recirc->metadata, flow); | |
4812 | ||
4813 | /* Restore stack, if any. */ | |
4814 | if (recirc->stack) { | |
4815 | ofpbuf_put(&ctx.stack, recirc->stack->data, recirc->stack->size); | |
4816 | } | |
4817 | ||
4818 | /* Restore action set, if any. */ | |
4819 | if (recirc->action_set_len) { | |
4820 | const struct ofpact *a; | |
4821 | ||
4822 | ofpbuf_put(&ctx.action_set, recirc->ofpacts, | |
4823 | recirc->action_set_len); | |
4824 | ||
4825 | OFPACT_FOR_EACH(a, recirc->ofpacts, recirc->action_set_len) { | |
4826 | if (a->type == OFPACT_GROUP) { | |
4827 | ctx.action_set_has_group = true; | |
4828 | break; | |
4829 | } | |
4830 | } | |
4831 | } | |
4832 | ||
4833 | /* Restore recirculation actions. If there are no actions, processing | |
4834 | * will start with a lookup in the table set above. */ | |
4835 | if (recirc->ofpacts_len > recirc->action_set_len) { | |
4836 | xin->ofpacts_len = recirc->ofpacts_len - recirc->action_set_len; | |
4837 | xin->ofpacts = recirc->ofpacts + | |
4838 | recirc->action_set_len / sizeof *recirc->ofpacts; | |
4839 | } | |
4840 | } else if (OVS_UNLIKELY(flow->recirc_id)) { | |
4841 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); | |
4842 | ||
4843 | VLOG_WARN_RL(&rl, "Recirculation context not found for ID %"PRIx32, | |
4844 | flow->recirc_id); | |
4845 | return; | |
4846 | } | |
621b8064 JR |
4847 | /* The bridge is now known so obtain its table version. */ |
4848 | ctx.tables_version = ofproto_dpif_get_tables_version(ctx.xbridge->ofproto); | |
9583bc14 | 4849 | |
10c44245 | 4850 | if (!xin->ofpacts && !ctx.rule) { |
621b8064 JR |
4851 | rule = rule_dpif_lookup_from_table(ctx.xbridge->ofproto, |
4852 | ctx.tables_version, flow, wc, | |
e672ff9b JR |
4853 | ctx.xin->xcache != NULL, |
4854 | ctx.xin->resubmit_stats, | |
4855 | &ctx.table_id, | |
4856 | flow->in_port.ofp_port, true, true); | |
10c44245 EJ |
4857 | if (ctx.xin->resubmit_stats) { |
4858 | rule_dpif_credit_stats(rule, ctx.xin->resubmit_stats); | |
4859 | } | |
b256dc52 JS |
4860 | if (ctx.xin->xcache) { |
4861 | struct xc_entry *entry; | |
4862 | ||
4863 | entry = xlate_cache_add_entry(ctx.xin->xcache, XC_RULE); | |
b256dc52 JS |
4864 | entry->u.rule = rule; |
4865 | } | |
10c44245 | 4866 | ctx.rule = rule; |
a8c31348 BP |
4867 | |
4868 | if (OVS_UNLIKELY(ctx.xin->resubmit_hook)) { | |
4869 | ctx.xin->resubmit_hook(ctx.xin, rule, 0); | |
4870 | } | |
10c44245 | 4871 | } |
ee1afdd5 | 4872 | xout->fail_open = ctx.rule && rule_dpif_is_fail_open(ctx.rule); |
10c44245 | 4873 | |
9583bc14 EJ |
4874 | if (xin->ofpacts) { |
4875 | ofpacts = xin->ofpacts; | |
4876 | ofpacts_len = xin->ofpacts_len; | |
10c44245 | 4877 | } else if (ctx.rule) { |
d8227eba JR |
4878 | const struct rule_actions *actions = rule_dpif_get_actions(ctx.rule); |
4879 | ||
6f00e29b BP |
4880 | ofpacts = actions->ofpacts; |
4881 | ofpacts_len = actions->ofpacts_len; | |
8b1e5560 JR |
4882 | |
4883 | ctx.rule_cookie = rule_dpif_get_flow_cookie(ctx.rule); | |
9583bc14 | 4884 | } else { |
428b2edd | 4885 | OVS_NOT_REACHED(); |
9583bc14 EJ |
4886 | } |
4887 | ||
e672ff9b | 4888 | if (mbridge_has_mirrors(xbridge->mbridge)) { |
9583bc14 EJ |
4889 | /* Do this conditionally because the copy is expensive enough that it |
4890 | * shows up in profiles. */ | |
33bf9176 | 4891 | orig_flow = *flow; |
9583bc14 EJ |
4892 | } |
4893 | ||
e672ff9b JR |
4894 | /* Tunnel stats only for non-recirculated packets. */ |
4895 | if (!xin->recirc && in_port && in_port->is_tunnel) { | |
b256dc52 JS |
4896 | if (ctx.xin->resubmit_stats) { |
4897 | netdev_vport_inc_rx(in_port->netdev, ctx.xin->resubmit_stats); | |
4898 | if (in_port->bfd) { | |
4899 | bfd_account_rx(in_port->bfd, ctx.xin->resubmit_stats); | |
4900 | } | |
4901 | } | |
4902 | if (ctx.xin->xcache) { | |
4903 | struct xc_entry *entry; | |
4904 | ||
4905 | entry = xlate_cache_add_entry(ctx.xin->xcache, XC_NETDEV); | |
4906 | entry->u.dev.rx = netdev_ref(in_port->netdev); | |
4907 | entry->u.dev.bfd = bfd_ref(in_port->bfd); | |
d6fc5f57 EJ |
4908 | } |
4909 | } | |
4910 | ||
e672ff9b JR |
4911 | /* Do not perform special processing on recirculated packets, |
4912 | * as recirculated packets are not really received by the bridge. */ | |
4913 | if (!xin->recirc && | |
4914 | (special = process_special(&ctx, flow, in_port, ctx.xin->packet))) { | |
04594cd5 | 4915 | ctx.xout->slow |= special; |
9583bc14 | 4916 | } else { |
9583bc14 | 4917 | size_t sample_actions_len; |
9583bc14 | 4918 | |
4e022ec0 | 4919 | if (flow->in_port.ofp_port |
e672ff9b | 4920 | != vsp_realdev_to_vlandev(xbridge->ofproto, |
46c88433 | 4921 | flow->in_port.ofp_port, |
33bf9176 | 4922 | flow->vlan_tci)) { |
9583bc14 EJ |
4923 | ctx.base_flow.vlan_tci = 0; |
4924 | } | |
4925 | ||
e672ff9b JR |
4926 | /* Sampling is done only for packets really received by the bridge. */ |
4927 | if (!xin->recirc) { | |
4928 | add_sflow_action(&ctx); | |
4929 | add_ipfix_action(&ctx); | |
4930 | sample_actions_len = ctx.xout->odp_actions->size; | |
4931 | } else { | |
4932 | sample_actions_len = 0; | |
4933 | } | |
9583bc14 | 4934 | |
62a7cc71 | 4935 | if (tnl_may_send && (!in_port || may_receive(in_port, &ctx))) { |
9583bc14 EJ |
4936 | do_xlate_actions(ofpacts, ofpacts_len, &ctx); |
4937 | ||
4938 | /* We've let OFPP_NORMAL and the learning action look at the | |
4939 | * packet, so drop it now if forwarding is disabled. */ | |
9efd308e DV |
4940 | if (in_port && (!xport_stp_forward_state(in_port) || |
4941 | !xport_rstp_forward_state(in_port))) { | |
8ec90813 | 4942 | /* Drop all actions added by do_xlate_actions() above. */ |
6fd6ed71 | 4943 | ctx.xout->odp_actions->size = sample_actions_len; |
e672ff9b JR |
4944 | |
4945 | /* Undo changes that may have been done for recirculation. */ | |
4946 | if (exit_recirculates(&ctx)) { | |
4947 | ctx.action_set.size = ctx.recirc_action_offset; | |
4948 | ctx.recirc_action_offset = -1; | |
4949 | ctx.last_unroll_offset = -1; | |
4950 | } | |
8ec90813 | 4951 | } else if (ctx.action_set.size) { |
e672ff9b JR |
4952 | /* Translate action set only if not dropping the packet and |
4953 | * not recirculating. */ | |
4954 | if (!exit_recirculates(&ctx)) { | |
4955 | xlate_action_set(&ctx); | |
4956 | } | |
4957 | } | |
4958 | /* Check if need to recirculate. */ | |
4959 | if (exit_recirculates(&ctx)) { | |
4960 | compose_recirculate_action(&ctx); | |
9583bc14 EJ |
4961 | } |
4962 | } | |
4963 | ||
e672ff9b JR |
4964 | /* Output only fully processed packets. */ |
4965 | if (!exit_recirculates(&ctx) | |
4966 | && xbridge->has_in_band | |
ce4a6b76 BP |
4967 | && in_band_must_output_to_local_port(flow) |
4968 | && !actions_output_to_local_port(&ctx)) { | |
e93ef1c7 | 4969 | compose_output_action(&ctx, OFPP_LOCAL, NULL); |
9583bc14 | 4970 | } |
aaa0fbae | 4971 | |
e672ff9b JR |
4972 | if (!xin->recirc) { |
4973 | fix_sflow_action(&ctx); | |
4974 | } | |
4975 | /* Only mirror fully processed packets. */ | |
4976 | if (!exit_recirculates(&ctx) | |
4977 | && mbridge_has_mirrors(xbridge->mbridge)) { | |
9583bc14 EJ |
4978 | add_mirror_actions(&ctx, &orig_flow); |
4979 | } | |
9583bc14 EJ |
4980 | } |
4981 | ||
6fd6ed71 | 4982 | if (nl_attr_oversized(ctx.xout->odp_actions->size)) { |
542024c4 | 4983 | /* These datapath actions are too big for a Netlink attribute, so we |
0f032e95 BP |
4984 | * can't hand them to the kernel directly. dpif_execute() can execute |
4985 | * them one by one with help, so just mark the result as SLOW_ACTION to | |
4986 | * prevent the flow from being installed. */ | |
4987 | COVERAGE_INC(xlate_actions_oversize); | |
4988 | ctx.xout->slow |= SLOW_ACTION; | |
7d031d7e BP |
4989 | } else if (too_many_output_actions(ctx.xout->odp_actions)) { |
4990 | COVERAGE_INC(xlate_actions_too_many_output); | |
4991 | ctx.xout->slow |= SLOW_ACTION; | |
542024c4 BP |
4992 | } |
4993 | ||
e672ff9b JR |
4994 | /* Update mirror stats only for packets really received by the bridge. */ |
4995 | if (!xin->recirc && mbridge_has_mirrors(xbridge->mbridge)) { | |
b256dc52 | 4996 | if (ctx.xin->resubmit_stats) { |
e672ff9b | 4997 | mirror_update_stats(xbridge->mbridge, xout->mirrors, |
b256dc52 JS |
4998 | ctx.xin->resubmit_stats->n_packets, |
4999 | ctx.xin->resubmit_stats->n_bytes); | |
5000 | } | |
5001 | if (ctx.xin->xcache) { | |
5002 | struct xc_entry *entry; | |
5003 | ||
5004 | entry = xlate_cache_add_entry(ctx.xin->xcache, XC_MIRROR); | |
e672ff9b | 5005 | entry->u.mirror.mbridge = mbridge_ref(xbridge->mbridge); |
b256dc52 JS |
5006 | entry->u.mirror.mirrors = xout->mirrors; |
5007 | } | |
5008 | } | |
5009 | ||
e672ff9b JR |
5010 | /* Do netflow only for packets really received by the bridge. */ |
5011 | if (!xin->recirc && xbridge->netflow) { | |
b256dc52 JS |
5012 | /* Only update netflow if we don't have controller flow. We don't |
5013 | * report NetFlow expiration messages for such facets because they | |
5014 | * are just part of the control logic for the network, not real | |
5015 | * traffic. */ | |
5016 | if (ofpacts_len == 0 | |
5017 | || ofpacts->type != OFPACT_CONTROLLER | |
5018 | || ofpact_next(ofpacts) < ofpact_end(ofpacts, ofpacts_len)) { | |
5019 | if (ctx.xin->resubmit_stats) { | |
e672ff9b | 5020 | netflow_flow_update(xbridge->netflow, flow, |
d6fc5f57 EJ |
5021 | xout->nf_output_iface, |
5022 | ctx.xin->resubmit_stats); | |
5023 | } | |
b256dc52 JS |
5024 | if (ctx.xin->xcache) { |
5025 | struct xc_entry *entry; | |
5026 | ||
5027 | entry = xlate_cache_add_entry(ctx.xin->xcache, XC_NETFLOW); | |
e672ff9b | 5028 | entry->u.nf.netflow = netflow_ref(xbridge->netflow); |
b256dc52 JS |
5029 | entry->u.nf.flow = xmemdup(flow, sizeof *flow); |
5030 | entry->u.nf.iface = xout->nf_output_iface; | |
5031 | } | |
d6fc5f57 EJ |
5032 | } |
5033 | } | |
5034 | ||
9583bc14 | 5035 | ofpbuf_uninit(&ctx.stack); |
7fdb60a7 | 5036 | ofpbuf_uninit(&ctx.action_set); |
9583bc14 | 5037 | |
7b7dcc76 JR |
5038 | if (wc) { |
5039 | /* Clear the metadata and register wildcard masks, because we won't | |
5040 | * use non-header fields as part of the cache. */ | |
5041 | flow_wildcards_clear_non_packet_fields(wc); | |
5042 | ||
5043 | /* ICMPv4 and ICMPv6 have 8-bit "type" and "code" fields. struct flow | |
5044 | * uses the low 8 bits of the 16-bit tp_src and tp_dst members to | |
5045 | * represent these fields. The datapath interface, on the other hand, | |
5046 | * represents them with just 8 bits each. This means that if the high | |
5047 | * 8 bits of the masks for these fields somehow become set, then they | |
5048 | * will get chopped off by a round trip through the datapath, and | |
5049 | * revalidation will spot that as an inconsistency and delete the flow. | |
5050 | * Avoid the problem here by making sure that only the low 8 bits of | |
5051 | * either field can be unwildcarded for ICMP. | |
5052 | */ | |
5053 | if (is_icmp) { | |
5054 | wc->masks.tp_src &= htons(UINT8_MAX); | |
5055 | wc->masks.tp_dst &= htons(UINT8_MAX); | |
5056 | } | |
f171fa88 AW |
5057 | /* VLAN_TCI CFI bit must be matched if any of the TCI is matched. */ |
5058 | if (wc->masks.vlan_tci) { | |
5059 | wc->masks.vlan_tci |= htons(VLAN_CFI); | |
5060 | } | |
c56fac1b | 5061 | } |
91d6cd12 AW |
5062 | } |
5063 | ||
5064 | /* Sends 'packet' out 'ofport'. | |
5065 | * May modify 'packet'. | |
5066 | * Returns 0 if successful, otherwise a positive errno value. */ | |
5067 | int | |
cf62fa4c | 5068 | xlate_send_packet(const struct ofport_dpif *ofport, struct dp_packet *packet) |
91d6cd12 | 5069 | { |
84f0f298 | 5070 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
91d6cd12 | 5071 | struct xport *xport; |
91d6cd12 | 5072 | struct ofpact_output output; |
91d6cd12 | 5073 | struct flow flow; |
91d6cd12 | 5074 | |
91d6cd12 AW |
5075 | ofpact_init(&output.ofpact, OFPACT_OUTPUT, sizeof output); |
5076 | /* Use OFPP_NONE as the in_port to avoid special packet processing. */ | |
cf62fa4c | 5077 | flow_extract(packet, &flow); |
b5e7e61a | 5078 | flow.in_port.ofp_port = OFPP_NONE; |
91d6cd12 | 5079 | |
84f0f298 | 5080 | xport = xport_lookup(xcfg, ofport); |
91d6cd12 | 5081 | if (!xport) { |
02ea2703 | 5082 | return EINVAL; |
91d6cd12 | 5083 | } |
91d6cd12 AW |
5084 | output.port = xport->ofp_port; |
5085 | output.max_len = 0; | |
e491a67a YT |
5086 | |
5087 | return ofproto_dpif_execute_actions(xport->xbridge->ofproto, &flow, NULL, | |
5088 | &output.ofpact, sizeof output, | |
5089 | packet); | |
9583bc14 | 5090 | } |
b256dc52 JS |
5091 | |
5092 | struct xlate_cache * | |
5093 | xlate_cache_new(void) | |
5094 | { | |
5095 | struct xlate_cache *xcache = xmalloc(sizeof *xcache); | |
5096 | ||
5097 | ofpbuf_init(&xcache->entries, 512); | |
5098 | return xcache; | |
5099 | } | |
5100 | ||
5101 | static struct xc_entry * | |
5102 | xlate_cache_add_entry(struct xlate_cache *xcache, enum xc_type type) | |
5103 | { | |
5104 | struct xc_entry *entry; | |
5105 | ||
5106 | entry = ofpbuf_put_zeros(&xcache->entries, sizeof *entry); | |
5107 | entry->type = type; | |
5108 | ||
5109 | return entry; | |
5110 | } | |
5111 | ||
5112 | static void | |
5113 | xlate_cache_netdev(struct xc_entry *entry, const struct dpif_flow_stats *stats) | |
5114 | { | |
5115 | if (entry->u.dev.tx) { | |
5116 | netdev_vport_inc_tx(entry->u.dev.tx, stats); | |
5117 | } | |
5118 | if (entry->u.dev.rx) { | |
5119 | netdev_vport_inc_rx(entry->u.dev.rx, stats); | |
5120 | } | |
5121 | if (entry->u.dev.bfd) { | |
5122 | bfd_account_rx(entry->u.dev.bfd, stats); | |
5123 | } | |
5124 | } | |
5125 | ||
5126 | static void | |
5127 | xlate_cache_normal(struct ofproto_dpif *ofproto, struct flow *flow, int vlan) | |
5128 | { | |
84f0f298 | 5129 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
b256dc52 JS |
5130 | struct xbridge *xbridge; |
5131 | struct xbundle *xbundle; | |
5132 | struct flow_wildcards wc; | |
5133 | ||
84f0f298 | 5134 | xbridge = xbridge_lookup(xcfg, ofproto); |
b256dc52 JS |
5135 | if (!xbridge) { |
5136 | return; | |
5137 | } | |
5138 | ||
5139 | xbundle = lookup_input_bundle(xbridge, flow->in_port.ofp_port, false, | |
5140 | NULL); | |
5141 | if (!xbundle) { | |
5142 | return; | |
5143 | } | |
5144 | ||
5145 | update_learning_table(xbridge, flow, &wc, vlan, xbundle); | |
5146 | } | |
5147 | ||
5148 | /* Push stats and perform side effects of flow translation. */ | |
5149 | void | |
0725e747 | 5150 | xlate_push_stats(struct xlate_cache *xcache, |
b256dc52 JS |
5151 | const struct dpif_flow_stats *stats) |
5152 | { | |
5153 | struct xc_entry *entry; | |
5154 | struct ofpbuf entries = xcache->entries; | |
a36de779 | 5155 | uint8_t dmac[ETH_ADDR_LEN]; |
b256dc52 | 5156 | |
bc388583 BP |
5157 | if (!stats->n_packets) { |
5158 | return; | |
5159 | } | |
5160 | ||
b256dc52 JS |
5161 | XC_ENTRY_FOR_EACH (entry, entries, xcache) { |
5162 | switch (entry->type) { | |
5163 | case XC_RULE: | |
5164 | rule_dpif_credit_stats(entry->u.rule, stats); | |
5165 | break; | |
5166 | case XC_BOND: | |
5167 | bond_account(entry->u.bond.bond, entry->u.bond.flow, | |
5168 | entry->u.bond.vid, stats->n_bytes); | |
5169 | break; | |
5170 | case XC_NETDEV: | |
5171 | xlate_cache_netdev(entry, stats); | |
5172 | break; | |
5173 | case XC_NETFLOW: | |
5174 | netflow_flow_update(entry->u.nf.netflow, entry->u.nf.flow, | |
5175 | entry->u.nf.iface, stats); | |
5176 | break; | |
5177 | case XC_MIRROR: | |
5178 | mirror_update_stats(entry->u.mirror.mbridge, | |
5179 | entry->u.mirror.mirrors, | |
5180 | stats->n_packets, stats->n_bytes); | |
5181 | break; | |
5182 | case XC_LEARN: | |
0725e747 | 5183 | ofproto_dpif_flow_mod(entry->u.learn.ofproto, entry->u.learn.fm); |
b256dc52 JS |
5184 | break; |
5185 | case XC_NORMAL: | |
0725e747 BP |
5186 | xlate_cache_normal(entry->u.normal.ofproto, entry->u.normal.flow, |
5187 | entry->u.normal.vlan); | |
b256dc52 JS |
5188 | break; |
5189 | case XC_FIN_TIMEOUT: | |
5190 | xlate_fin_timeout__(entry->u.fin.rule, stats->tcp_flags, | |
5191 | entry->u.fin.idle, entry->u.fin.hard); | |
5192 | break; | |
1e684d7d RW |
5193 | case XC_GROUP: |
5194 | group_dpif_credit_stats(entry->u.group.group, entry->u.group.bucket, | |
5195 | stats); | |
5196 | break; | |
a36de779 PS |
5197 | case XC_TNL_ARP: |
5198 | /* Lookup arp to avoid arp timeout. */ | |
5199 | tnl_arp_lookup(entry->u.tnl_arp_cache.br_name, entry->u.tnl_arp_cache.d_ip, dmac); | |
5200 | break; | |
b256dc52 JS |
5201 | default: |
5202 | OVS_NOT_REACHED(); | |
5203 | } | |
5204 | } | |
5205 | } | |
5206 | ||
5207 | static void | |
5208 | xlate_dev_unref(struct xc_entry *entry) | |
5209 | { | |
5210 | if (entry->u.dev.tx) { | |
5211 | netdev_close(entry->u.dev.tx); | |
5212 | } | |
5213 | if (entry->u.dev.rx) { | |
5214 | netdev_close(entry->u.dev.rx); | |
5215 | } | |
5216 | if (entry->u.dev.bfd) { | |
5217 | bfd_unref(entry->u.dev.bfd); | |
5218 | } | |
5219 | } | |
5220 | ||
5221 | static void | |
5222 | xlate_cache_clear_netflow(struct netflow *netflow, struct flow *flow) | |
5223 | { | |
b256dc52 JS |
5224 | netflow_flow_clear(netflow, flow); |
5225 | netflow_unref(netflow); | |
5226 | free(flow); | |
5227 | } | |
5228 | ||
5229 | void | |
5230 | xlate_cache_clear(struct xlate_cache *xcache) | |
5231 | { | |
5232 | struct xc_entry *entry; | |
5233 | struct ofpbuf entries; | |
5234 | ||
5235 | if (!xcache) { | |
5236 | return; | |
5237 | } | |
5238 | ||
5239 | XC_ENTRY_FOR_EACH (entry, entries, xcache) { | |
5240 | switch (entry->type) { | |
5241 | case XC_RULE: | |
5242 | rule_dpif_unref(entry->u.rule); | |
5243 | break; | |
5244 | case XC_BOND: | |
5245 | free(entry->u.bond.flow); | |
5246 | bond_unref(entry->u.bond.bond); | |
5247 | break; | |
5248 | case XC_NETDEV: | |
5249 | xlate_dev_unref(entry); | |
5250 | break; | |
5251 | case XC_NETFLOW: | |
5252 | xlate_cache_clear_netflow(entry->u.nf.netflow, entry->u.nf.flow); | |
5253 | break; | |
5254 | case XC_MIRROR: | |
5255 | mbridge_unref(entry->u.mirror.mbridge); | |
5256 | break; | |
5257 | case XC_LEARN: | |
4165b5e0 JS |
5258 | free(entry->u.learn.fm); |
5259 | ofpbuf_delete(entry->u.learn.ofpacts); | |
b256dc52 JS |
5260 | break; |
5261 | case XC_NORMAL: | |
5262 | free(entry->u.normal.flow); | |
5263 | break; | |
5264 | case XC_FIN_TIMEOUT: | |
83709dfa JR |
5265 | /* 'u.fin.rule' is always already held as a XC_RULE, which |
5266 | * has already released it's reference above. */ | |
b256dc52 | 5267 | break; |
1e684d7d RW |
5268 | case XC_GROUP: |
5269 | group_dpif_unref(entry->u.group.group); | |
5270 | break; | |
a36de779 PS |
5271 | case XC_TNL_ARP: |
5272 | break; | |
b256dc52 JS |
5273 | default: |
5274 | OVS_NOT_REACHED(); | |
5275 | } | |
5276 | } | |
5277 | ||
5278 | ofpbuf_clear(&xcache->entries); | |
5279 | } | |
5280 | ||
5281 | void | |
5282 | xlate_cache_delete(struct xlate_cache *xcache) | |
5283 | { | |
5284 | xlate_cache_clear(xcache); | |
5285 | ofpbuf_uninit(&xcache->entries); | |
5286 | free(xcache); | |
5287 | } |