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9bfe9334 | 1 | /* Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 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 | |
53902038 | 25 | #include "tnl-neigh-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" |
c2b878e0 | 57 | #include "packets.h" |
a36de779 PS |
58 | #include "ovs-router.h" |
59 | #include "tnl-ports.h" | |
9583bc14 | 60 | #include "tunnel.h" |
e6211adc | 61 | #include "openvswitch/vlog.h" |
9583bc14 | 62 | |
46c88433 | 63 | COVERAGE_DEFINE(xlate_actions); |
0f032e95 | 64 | COVERAGE_DEFINE(xlate_actions_oversize); |
7d031d7e | 65 | COVERAGE_DEFINE(xlate_actions_too_many_output); |
9583bc14 EJ |
66 | |
67 | VLOG_DEFINE_THIS_MODULE(ofproto_dpif_xlate); | |
68 | ||
8a553e9a EJ |
69 | /* Maximum depth of flow table recursion (due to resubmit actions) in a |
70 | * flow translation. */ | |
71 | #define MAX_RESUBMIT_RECURSION 64 | |
adcf00ba AZ |
72 | #define MAX_INTERNAL_RESUBMITS 1 /* Max resbmits allowed using rules in |
73 | internal table. */ | |
8a553e9a | 74 | |
98b07853 BP |
75 | /* Maximum number of resubmit actions in a flow translation, whether they are |
76 | * recursive or not. */ | |
77 | #define MAX_RESUBMITS (MAX_RESUBMIT_RECURSION * MAX_RESUBMIT_RECURSION) | |
78 | ||
46c88433 EJ |
79 | struct xbridge { |
80 | struct hmap_node hmap_node; /* Node in global 'xbridges' map. */ | |
81 | struct ofproto_dpif *ofproto; /* Key in global 'xbridges' map. */ | |
82 | ||
ca6ba700 | 83 | struct ovs_list xbundles; /* Owned xbundles. */ |
46c88433 EJ |
84 | struct hmap xports; /* Indexed by ofp_port. */ |
85 | ||
86 | char *name; /* Name used in log messages. */ | |
89a8a7f0 | 87 | struct dpif *dpif; /* Datapath interface. */ |
46c88433 | 88 | struct mac_learning *ml; /* Mac learning handle. */ |
6d95c4e8 | 89 | struct mcast_snooping *ms; /* Multicast Snooping handle. */ |
46c88433 EJ |
90 | struct mbridge *mbridge; /* Mirroring. */ |
91 | struct dpif_sflow *sflow; /* SFlow handle, or null. */ | |
92 | struct dpif_ipfix *ipfix; /* Ipfix handle, or null. */ | |
ce3955be | 93 | struct netflow *netflow; /* Netflow handle, or null. */ |
9d189a50 | 94 | struct stp *stp; /* STP or null if disabled. */ |
9efd308e | 95 | struct rstp *rstp; /* RSTP or null if disabled. */ |
46c88433 | 96 | |
46c88433 EJ |
97 | bool has_in_band; /* Bridge has in band control? */ |
98 | bool forward_bpdu; /* Bridge forwards STP BPDUs? */ | |
4b97b70d | 99 | |
b440dd8c JS |
100 | /* Datapath feature support. */ |
101 | struct dpif_backer_support support; | |
46c88433 EJ |
102 | }; |
103 | ||
104 | struct xbundle { | |
105 | struct hmap_node hmap_node; /* In global 'xbundles' map. */ | |
106 | struct ofbundle *ofbundle; /* Key in global 'xbundles' map. */ | |
107 | ||
ca6ba700 | 108 | struct ovs_list list_node; /* In parent 'xbridges' list. */ |
46c88433 EJ |
109 | struct xbridge *xbridge; /* Parent xbridge. */ |
110 | ||
ca6ba700 | 111 | struct ovs_list xports; /* Contains "struct xport"s. */ |
46c88433 EJ |
112 | |
113 | char *name; /* Name used in log messages. */ | |
114 | struct bond *bond; /* Nonnull iff more than one port. */ | |
115 | struct lacp *lacp; /* LACP handle or null. */ | |
116 | ||
117 | enum port_vlan_mode vlan_mode; /* VLAN mode. */ | |
118 | int vlan; /* -1=trunk port, else a 12-bit VLAN ID. */ | |
119 | unsigned long *trunks; /* Bitmap of trunked VLANs, if 'vlan' == -1. | |
120 | * NULL if all VLANs are trunked. */ | |
121 | bool use_priority_tags; /* Use 802.1p tag for frames in VLAN 0? */ | |
122 | bool floodable; /* No port has OFPUTIL_PC_NO_FLOOD set? */ | |
123 | }; | |
124 | ||
125 | struct xport { | |
126 | struct hmap_node hmap_node; /* Node in global 'xports' map. */ | |
127 | struct ofport_dpif *ofport; /* Key in global 'xports map. */ | |
128 | ||
129 | struct hmap_node ofp_node; /* Node in parent xbridge 'xports' map. */ | |
130 | ofp_port_t ofp_port; /* Key in parent xbridge 'xports' map. */ | |
131 | ||
132 | odp_port_t odp_port; /* Datapath port number or ODPP_NONE. */ | |
133 | ||
ca6ba700 | 134 | struct ovs_list bundle_node; /* In parent xbundle (if it exists). */ |
46c88433 EJ |
135 | struct xbundle *xbundle; /* Parent xbundle or null. */ |
136 | ||
137 | struct netdev *netdev; /* 'ofport''s netdev. */ | |
138 | ||
139 | struct xbridge *xbridge; /* Parent bridge. */ | |
140 | struct xport *peer; /* Patch port peer or null. */ | |
141 | ||
142 | enum ofputil_port_config config; /* OpenFlow port configuration. */ | |
dd8cd4b4 | 143 | enum ofputil_port_state state; /* OpenFlow port state. */ |
92cf817b | 144 | int stp_port_no; /* STP port number or -1 if not in use. */ |
f025bcb7 | 145 | struct rstp_port *rstp_port; /* RSTP port or null. */ |
46c88433 | 146 | |
55954f6e EJ |
147 | struct hmap skb_priorities; /* Map of 'skb_priority_to_dscp's. */ |
148 | ||
46c88433 EJ |
149 | bool may_enable; /* May be enabled in bonds. */ |
150 | bool is_tunnel; /* Is a tunnel port. */ | |
151 | ||
152 | struct cfm *cfm; /* CFM handle or null. */ | |
153 | struct bfd *bfd; /* BFD handle or null. */ | |
0477baa9 | 154 | struct lldp *lldp; /* LLDP handle or null. */ |
46c88433 EJ |
155 | }; |
156 | ||
4d0acc70 EJ |
157 | struct xlate_ctx { |
158 | struct xlate_in *xin; | |
159 | struct xlate_out *xout; | |
160 | ||
46c88433 | 161 | const struct xbridge *xbridge; |
4d0acc70 | 162 | |
621b8064 | 163 | /* Flow tables version at the beginning of the translation. */ |
18721c4a | 164 | cls_version_t tables_version; |
621b8064 | 165 | |
4d0acc70 EJ |
166 | /* Flow at the last commit. */ |
167 | struct flow base_flow; | |
168 | ||
169 | /* Tunnel IP destination address as received. This is stored separately | |
170 | * as the base_flow.tunnel is cleared on init to reflect the datapath | |
171 | * behavior. Used to make sure not to send tunneled output to ourselves, | |
172 | * which might lead to an infinite loop. This could happen easily | |
173 | * if a tunnel is marked as 'ip_remote=flow', and the flow does not | |
174 | * actually set the tun_dst field. */ | |
e4d3706c | 175 | struct in6_addr orig_tunnel_ipv6_dst; |
4d0acc70 EJ |
176 | |
177 | /* Stack for the push and pop actions. Each stack element is of type | |
178 | * "union mf_subvalue". */ | |
4d0acc70 EJ |
179 | struct ofpbuf stack; |
180 | ||
181 | /* The rule that we are currently translating, or NULL. */ | |
182 | struct rule_dpif *rule; | |
183 | ||
49a73e0c BP |
184 | /* Flow translation populates this with wildcards relevant in translation. |
185 | * When 'xin->wc' is nonnull, this is the same pointer. When 'xin->wc' is | |
186 | * null, this is a pointer to uninitialized scratch memory. This allows | |
187 | * code to blindly write to 'ctx->wc' without worrying about whether the | |
188 | * caller really wants wildcards. */ | |
189 | struct flow_wildcards *wc; | |
190 | ||
1520ef4f BP |
191 | /* Output buffer for datapath actions. When 'xin->odp_actions' is nonnull, |
192 | * this is the same pointer. When 'xin->odp_actions' is null, this points | |
193 | * to a scratch ofpbuf. This allows code to add actions to | |
194 | * 'ctx->odp_actions' without worrying about whether the caller really | |
195 | * wants actions. */ | |
196 | struct ofpbuf *odp_actions; | |
197 | ||
98b07853 BP |
198 | /* Resubmit statistics, via xlate_table_action(). */ |
199 | int recurse; /* Current resubmit nesting depth. */ | |
200 | int resubmits; /* Total number of resubmits. */ | |
5a070238 | 201 | bool in_group; /* Currently translating ofgroup, if true. */ |
029ca940 | 202 | bool in_action_set; /* Currently translating action_set, if true. */ |
98b07853 | 203 | |
4d0acc70 | 204 | uint8_t table_id; /* OpenFlow table ID where flow was found. */ |
8b1e5560 JR |
205 | ovs_be64 rule_cookie; /* Cookie of the rule being translated. */ |
206 | uint32_t orig_skb_priority; /* Priority when packet arrived. */ | |
4d0acc70 | 207 | uint32_t sflow_n_outputs; /* Number of output ports. */ |
4e022ec0 | 208 | odp_port_t sflow_odp_port; /* Output port for composing sFlow action. */ |
2031ef97 | 209 | ofp_port_t nf_output_iface; /* Output interface index for NetFlow. */ |
4d0acc70 | 210 | bool exit; /* No further actions should be processed. */ |
3d6151f3 | 211 | mirror_mask_t mirrors; /* Bitmap of associated mirrors. */ |
7fdb60a7 | 212 | |
e672ff9b JR |
213 | /* These are used for non-bond recirculation. The recirculation IDs are |
214 | * stored in xout and must be associated with a datapath flow (ukey), | |
215 | * otherwise they will be freed when the xout is uninitialized. | |
216 | * | |
217 | * | |
218 | * Steps in Recirculation Translation | |
219 | * ================================== | |
220 | * | |
221 | * At some point during translation, the code recognizes the need for | |
222 | * recirculation. For example, recirculation is necessary when, after | |
223 | * popping the last MPLS label, an action or a match tries to examine or | |
224 | * modify a field that has been newly revealed following the MPLS label. | |
225 | * | |
226 | * The simplest part of the work to be done is to commit existing changes to | |
227 | * the packet, which produces datapath actions corresponding to the changes, | |
228 | * and after this, add an OVS_ACTION_ATTR_RECIRC datapath action. | |
229 | * | |
230 | * The main problem here is preserving state. When the datapath executes | |
231 | * OVS_ACTION_ATTR_RECIRC, it will upcall to userspace to get a translation | |
232 | * for the post-recirculation actions. At this point userspace has to | |
233 | * resume the translation where it left off, which means that it has to | |
234 | * execute the following: | |
235 | * | |
236 | * - The action that prompted recirculation, and any actions following | |
237 | * it within the same flow. | |
238 | * | |
239 | * - If the action that prompted recirculation was invoked within a | |
240 | * NXAST_RESUBMIT, then any actions following the resubmit. These | |
241 | * "resubmit"s can be nested, so this has to go all the way up the | |
242 | * control stack. | |
243 | * | |
244 | * - The OpenFlow 1.1+ action set. | |
245 | * | |
246 | * State that actions and flow table lookups can depend on, such as the | |
247 | * following, must also be preserved: | |
248 | * | |
249 | * - Metadata fields (input port, registers, OF1.1+ metadata, ...). | |
250 | * | |
251 | * - Action set, stack | |
252 | * | |
253 | * - The table ID and cookie of the flow being translated at each level | |
254 | * of the control stack (since OFPAT_CONTROLLER actions send these to | |
255 | * the controller). | |
256 | * | |
257 | * Translation allows for the control of this state preservation via these | |
258 | * members. When a need for recirculation is identified, the translation | |
259 | * process: | |
260 | * | |
261 | * 1. Sets 'recirc_action_offset' to the current size of 'action_set'. The | |
262 | * action set is part of what needs to be preserved, so this allows the | |
263 | * action set and the additional state to share the 'action_set' buffer. | |
264 | * Later steps can tell that setup for recirculation is in progress from | |
265 | * the nonnegative value of 'recirc_action_offset'. | |
266 | * | |
267 | * 2. Sets 'exit' to true to tell later steps that we're exiting from the | |
268 | * translation process. | |
269 | * | |
270 | * 3. Adds an OFPACT_UNROLL_XLATE action to 'action_set'. This action | |
271 | * holds the current table ID and cookie so that they can be restored | |
272 | * during a post-recirculation upcall translation. | |
273 | * | |
274 | * 4. Adds the action that prompted recirculation and any actions following | |
275 | * it within the same flow to 'action_set', so that they can be executed | |
276 | * during a post-recirculation upcall translation. | |
277 | * | |
278 | * 5. Returns. | |
279 | * | |
280 | * 6. The action that prompted recirculation might be nested in a stack of | |
281 | * nested "resubmit"s that have actions remaining. Each of these notices | |
282 | * that we're exiting (from 'exit') and that recirculation setup is in | |
283 | * progress (from 'recirc_action_offset') and responds by adding more | |
284 | * OFPACT_UNROLL_XLATE actions to 'action_set', as necessary, and any | |
285 | * actions that were yet unprocessed. | |
286 | * | |
287 | * The caller stores all the state produced by this process associated with | |
288 | * the recirculation ID. For post-recirculation upcall translation, the | |
289 | * caller passes it back in for the new translation to execute. The | |
290 | * process yielded a set of ofpacts that can be translated directly, so it | |
291 | * is not much of a special case at that point. | |
292 | */ | |
293 | int recirc_action_offset; /* Offset in 'action_set' to actions to be | |
294 | * executed after recirculation, or -1. */ | |
295 | int last_unroll_offset; /* Offset in 'action_set' to the latest unroll | |
296 | * action, or -1. */ | |
297 | ||
7bbdd84f SH |
298 | /* True if a packet was but is no longer MPLS (due to an MPLS pop action). |
299 | * This is a trigger for recirculation in cases where translating an action | |
300 | * or looking up a flow requires access to the fields of the packet after | |
1d741d6d | 301 | * the MPLS label stack that was originally present. */ |
7bbdd84f SH |
302 | bool was_mpls; |
303 | ||
07659514 JS |
304 | /* True if conntrack has been performed on this packet during processing |
305 | * on the current bridge. This is used to determine whether conntrack | |
306 | * state from the datapath should be honored after recirculation. */ | |
307 | bool conntracked; | |
308 | ||
9ac0aada JR |
309 | /* Pointer to an embedded NAT action in a conntrack action, or NULL. */ |
310 | struct ofpact_nat *ct_nat_action; | |
311 | ||
7fdb60a7 SH |
312 | /* OpenFlow 1.1+ action set. |
313 | * | |
314 | * 'action_set' accumulates "struct ofpact"s added by OFPACT_WRITE_ACTIONS. | |
315 | * When translation is otherwise complete, ofpacts_execute_action_set() | |
316 | * converts it to a set of "struct ofpact"s that can be translated into | |
ed9c9e3e | 317 | * datapath actions. */ |
c61f3870 | 318 | bool action_set_has_group; /* Action set contains OFPACT_GROUP? */ |
7fdb60a7 | 319 | struct ofpbuf action_set; /* Action set. */ |
fff1b9c0 JR |
320 | |
321 | enum xlate_error error; /* Translation failed. */ | |
4d0acc70 EJ |
322 | }; |
323 | ||
fff1b9c0 JR |
324 | const char *xlate_strerror(enum xlate_error error) |
325 | { | |
326 | switch (error) { | |
327 | case XLATE_OK: | |
328 | return "OK"; | |
329 | case XLATE_BRIDGE_NOT_FOUND: | |
330 | return "Bridge not found"; | |
331 | case XLATE_RECURSION_TOO_DEEP: | |
332 | return "Recursion too deep"; | |
333 | case XLATE_TOO_MANY_RESUBMITS: | |
334 | return "Too many resubmits"; | |
335 | case XLATE_STACK_TOO_DEEP: | |
336 | return "Stack too deep"; | |
337 | case XLATE_NO_RECIRCULATION_CONTEXT: | |
338 | return "No recirculation context"; | |
339 | case XLATE_RECIRCULATION_CONFLICT: | |
340 | return "Recirculation conflict"; | |
341 | case XLATE_TOO_MANY_MPLS_LABELS: | |
342 | return "Too many MPLS labels"; | |
343 | } | |
344 | return "Unknown error"; | |
345 | } | |
346 | ||
ed9c9e3e | 347 | static void xlate_action_set(struct xlate_ctx *ctx); |
704bb0bf | 348 | static void xlate_commit_actions(struct xlate_ctx *ctx); |
ed9c9e3e | 349 | |
1d741d6d JR |
350 | static void |
351 | ctx_trigger_recirculation(struct xlate_ctx *ctx) | |
352 | { | |
353 | ctx->exit = true; | |
354 | ctx->recirc_action_offset = ctx->action_set.size; | |
355 | } | |
356 | ||
357 | static bool | |
358 | ctx_first_recirculation_action(const struct xlate_ctx *ctx) | |
359 | { | |
360 | return ctx->recirc_action_offset == ctx->action_set.size; | |
361 | } | |
362 | ||
e672ff9b JR |
363 | static inline bool |
364 | exit_recirculates(const struct xlate_ctx *ctx) | |
365 | { | |
366 | /* When recirculating the 'recirc_action_offset' has a non-negative value. | |
367 | */ | |
368 | return ctx->recirc_action_offset >= 0; | |
369 | } | |
370 | ||
371 | static void compose_recirculate_action(struct xlate_ctx *ctx); | |
372 | ||
9583bc14 EJ |
373 | /* A controller may use OFPP_NONE as the ingress port to indicate that |
374 | * it did not arrive on a "real" port. 'ofpp_none_bundle' exists for | |
375 | * when an input bundle is needed for validation (e.g., mirroring or | |
376 | * OFPP_NORMAL processing). It is not connected to an 'ofproto' or have | |
3548d242 BP |
377 | * any 'port' structs, so care must be taken when dealing with it. */ |
378 | static struct xbundle ofpp_none_bundle = { | |
379 | .name = "OFPP_NONE", | |
380 | .vlan_mode = PORT_VLAN_TRUNK | |
381 | }; | |
9583bc14 | 382 | |
55954f6e EJ |
383 | /* Node in 'xport''s 'skb_priorities' map. Used to maintain a map from |
384 | * 'priority' (the datapath's term for QoS queue) to the dscp bits which all | |
385 | * traffic egressing the 'ofport' with that priority should be marked with. */ | |
386 | struct skb_priority_to_dscp { | |
387 | struct hmap_node hmap_node; /* Node in 'ofport_dpif''s 'skb_priorities'. */ | |
388 | uint32_t skb_priority; /* Priority of this queue (see struct flow). */ | |
389 | ||
390 | uint8_t dscp; /* DSCP bits to mark outgoing traffic with. */ | |
391 | }; | |
392 | ||
b256dc52 JS |
393 | enum xc_type { |
394 | XC_RULE, | |
395 | XC_BOND, | |
396 | XC_NETDEV, | |
397 | XC_NETFLOW, | |
398 | XC_MIRROR, | |
399 | XC_LEARN, | |
400 | XC_NORMAL, | |
401 | XC_FIN_TIMEOUT, | |
1e684d7d | 402 | XC_GROUP, |
53902038 | 403 | XC_TNL_NEIGH, |
b256dc52 JS |
404 | }; |
405 | ||
406 | /* xlate_cache entries hold enough information to perform the side effects of | |
407 | * xlate_actions() for a rule, without needing to perform rule translation | |
408 | * from scratch. The primary usage of these is to submit statistics to objects | |
409 | * that a flow relates to, although they may be used for other effects as well | |
410 | * (for instance, refreshing hard timeouts for learned flows). */ | |
411 | struct xc_entry { | |
412 | enum xc_type type; | |
413 | union { | |
414 | struct rule_dpif *rule; | |
415 | struct { | |
416 | struct netdev *tx; | |
417 | struct netdev *rx; | |
418 | struct bfd *bfd; | |
419 | } dev; | |
420 | struct { | |
421 | struct netflow *netflow; | |
422 | struct flow *flow; | |
423 | ofp_port_t iface; | |
424 | } nf; | |
425 | struct { | |
426 | struct mbridge *mbridge; | |
427 | mirror_mask_t mirrors; | |
428 | } mirror; | |
429 | struct { | |
430 | struct bond *bond; | |
431 | struct flow *flow; | |
432 | uint16_t vid; | |
433 | } bond; | |
434 | struct { | |
4165b5e0 JS |
435 | struct ofproto_dpif *ofproto; |
436 | struct ofputil_flow_mod *fm; | |
437 | struct ofpbuf *ofpacts; | |
b256dc52 JS |
438 | } learn; |
439 | struct { | |
440 | struct ofproto_dpif *ofproto; | |
441 | struct flow *flow; | |
442 | int vlan; | |
443 | } normal; | |
444 | struct { | |
445 | struct rule_dpif *rule; | |
446 | uint16_t idle; | |
447 | uint16_t hard; | |
448 | } fin; | |
1e684d7d RW |
449 | struct { |
450 | struct group_dpif *group; | |
451 | struct ofputil_bucket *bucket; | |
452 | } group; | |
a36de779 PS |
453 | struct { |
454 | char br_name[IFNAMSIZ]; | |
0b411137 | 455 | struct in6_addr d_ipv6; |
53902038 | 456 | } tnl_neigh_cache; |
b256dc52 JS |
457 | } u; |
458 | }; | |
459 | ||
460 | #define XC_ENTRY_FOR_EACH(entry, entries, xcache) \ | |
461 | entries = xcache->entries; \ | |
462 | for (entry = ofpbuf_try_pull(&entries, sizeof *entry); \ | |
463 | entry; \ | |
464 | entry = ofpbuf_try_pull(&entries, sizeof *entry)) | |
465 | ||
466 | struct xlate_cache { | |
467 | struct ofpbuf entries; | |
468 | }; | |
469 | ||
84f0f298 RW |
470 | /* Xlate config contains hash maps of all bridges, bundles and ports. |
471 | * Xcfgp contains the pointer to the current xlate configuration. | |
472 | * When the main thread needs to change the configuration, it copies xcfgp to | |
473 | * new_xcfg and edits new_xcfg. This enables the use of RCU locking which | |
474 | * does not block handler and revalidator threads. */ | |
475 | struct xlate_cfg { | |
476 | struct hmap xbridges; | |
477 | struct hmap xbundles; | |
478 | struct hmap xports; | |
479 | }; | |
b1b72f2d | 480 | static OVSRCU_TYPE(struct xlate_cfg *) xcfgp = OVSRCU_INITIALIZER(NULL); |
f439f23b | 481 | static struct xlate_cfg *new_xcfg = NULL; |
46c88433 EJ |
482 | |
483 | static bool may_receive(const struct xport *, struct xlate_ctx *); | |
9583bc14 EJ |
484 | static void do_xlate_actions(const struct ofpact *, size_t ofpacts_len, |
485 | struct xlate_ctx *); | |
adcf00ba | 486 | static void xlate_normal(struct xlate_ctx *); |
c1b3756c BP |
487 | static inline void xlate_report(struct xlate_ctx *, const char *, ...) |
488 | OVS_PRINTF_FORMAT(2, 3); | |
6d328fa2 SH |
489 | static void xlate_table_action(struct xlate_ctx *, ofp_port_t in_port, |
490 | uint8_t table_id, bool may_packet_in, | |
491 | bool honor_table_miss); | |
46c88433 EJ |
492 | static bool input_vid_is_valid(uint16_t vid, struct xbundle *, bool warn); |
493 | static uint16_t input_vid_to_vlan(const struct xbundle *, uint16_t vid); | |
494 | static void output_normal(struct xlate_ctx *, const struct xbundle *, | |
9583bc14 | 495 | uint16_t vlan); |
e93ef1c7 JR |
496 | |
497 | /* Optional bond recirculation parameter to compose_output_action(). */ | |
498 | struct xlate_bond_recirc { | |
499 | uint32_t recirc_id; /* !0 Use recirculation instead of output. */ | |
500 | uint8_t hash_alg; /* !0 Compute hash for recirc before. */ | |
501 | uint32_t hash_basis; /* Compute hash for recirc before. */ | |
502 | }; | |
503 | ||
504 | static void compose_output_action(struct xlate_ctx *, ofp_port_t ofp_port, | |
505 | const struct xlate_bond_recirc *xr); | |
9583bc14 | 506 | |
84f0f298 RW |
507 | static struct xbridge *xbridge_lookup(struct xlate_cfg *, |
508 | const struct ofproto_dpif *); | |
509 | static struct xbundle *xbundle_lookup(struct xlate_cfg *, | |
510 | const struct ofbundle *); | |
511 | static struct xport *xport_lookup(struct xlate_cfg *, | |
512 | const struct ofport_dpif *); | |
46c88433 | 513 | static struct xport *get_ofp_port(const struct xbridge *, ofp_port_t ofp_port); |
55954f6e EJ |
514 | static struct skb_priority_to_dscp *get_skb_priority(const struct xport *, |
515 | uint32_t skb_priority); | |
516 | static void clear_skb_priorities(struct xport *); | |
16194afd | 517 | static size_t count_skb_priorities(const struct xport *); |
55954f6e EJ |
518 | static bool dscp_from_skb_priority(const struct xport *, uint32_t skb_priority, |
519 | uint8_t *dscp); | |
46c88433 | 520 | |
b256dc52 JS |
521 | static struct xc_entry *xlate_cache_add_entry(struct xlate_cache *xc, |
522 | enum xc_type type); | |
84f0f298 RW |
523 | static void xlate_xbridge_init(struct xlate_cfg *, struct xbridge *); |
524 | static void xlate_xbundle_init(struct xlate_cfg *, struct xbundle *); | |
525 | static void xlate_xport_init(struct xlate_cfg *, struct xport *); | |
9efd308e | 526 | static void xlate_xbridge_set(struct xbridge *, struct dpif *, |
9efd308e DV |
527 | const struct mac_learning *, struct stp *, |
528 | struct rstp *, const struct mcast_snooping *, | |
529 | const struct mbridge *, | |
530 | const struct dpif_sflow *, | |
531 | const struct dpif_ipfix *, | |
2f47cdf4 | 532 | const struct netflow *, |
84f0f298 | 533 | bool forward_bpdu, bool has_in_band, |
b440dd8c | 534 | const struct dpif_backer_support *); |
84f0f298 RW |
535 | static void xlate_xbundle_set(struct xbundle *xbundle, |
536 | enum port_vlan_mode vlan_mode, int vlan, | |
537 | unsigned long *trunks, bool use_priority_tags, | |
538 | const struct bond *bond, const struct lacp *lacp, | |
539 | bool floodable); | |
540 | static void xlate_xport_set(struct xport *xport, odp_port_t odp_port, | |
541 | const struct netdev *netdev, const struct cfm *cfm, | |
0477baa9 DF |
542 | const struct bfd *bfd, const struct lldp *lldp, |
543 | int stp_port_no, const struct rstp_port *rstp_port, | |
84f0f298 RW |
544 | enum ofputil_port_config config, |
545 | enum ofputil_port_state state, bool is_tunnel, | |
546 | bool may_enable); | |
547 | static void xlate_xbridge_remove(struct xlate_cfg *, struct xbridge *); | |
548 | static void xlate_xbundle_remove(struct xlate_cfg *, struct xbundle *); | |
549 | static void xlate_xport_remove(struct xlate_cfg *, struct xport *); | |
550 | static void xlate_xbridge_copy(struct xbridge *); | |
551 | static void xlate_xbundle_copy(struct xbridge *, struct xbundle *); | |
552 | static void xlate_xport_copy(struct xbridge *, struct xbundle *, | |
553 | struct xport *); | |
554 | static void xlate_xcfg_free(struct xlate_cfg *); | |
b256dc52 | 555 | |
34dd0d78 | 556 | static inline void |
c1b3756c | 557 | xlate_report(struct xlate_ctx *ctx, const char *format, ...) |
34dd0d78 JR |
558 | { |
559 | if (OVS_UNLIKELY(ctx->xin->report_hook)) { | |
c1b3756c BP |
560 | va_list args; |
561 | ||
562 | va_start(args, format); | |
563 | ctx->xin->report_hook(ctx->xin, ctx->recurse, format, args); | |
564 | va_end(args); | |
34dd0d78 JR |
565 | } |
566 | } | |
84f0f298 | 567 | |
fff1b9c0 JR |
568 | static struct vlog_rate_limit error_report_rl = VLOG_RATE_LIMIT_INIT(1, 5); |
569 | ||
570 | #define XLATE_REPORT_ERROR(CTX, ...) \ | |
571 | do { \ | |
572 | if (OVS_UNLIKELY((CTX)->xin->report_hook)) { \ | |
573 | xlate_report(CTX, __VA_ARGS__); \ | |
574 | } else { \ | |
575 | VLOG_ERR_RL(&error_report_rl, __VA_ARGS__); \ | |
576 | } \ | |
577 | } while (0) | |
578 | ||
d6bef3cc BP |
579 | static inline void |
580 | xlate_report_actions(struct xlate_ctx *ctx, const char *title, | |
581 | const struct ofpact *ofpacts, size_t ofpacts_len) | |
582 | { | |
583 | if (OVS_UNLIKELY(ctx->xin->report_hook)) { | |
584 | struct ds s = DS_EMPTY_INITIALIZER; | |
585 | ofpacts_format(ofpacts, ofpacts_len, &s); | |
586 | xlate_report(ctx, "%s: %s", title, ds_cstr(&s)); | |
587 | ds_destroy(&s); | |
588 | } | |
589 | } | |
590 | ||
84f0f298 RW |
591 | static void |
592 | xlate_xbridge_init(struct xlate_cfg *xcfg, struct xbridge *xbridge) | |
593 | { | |
594 | list_init(&xbridge->xbundles); | |
595 | hmap_init(&xbridge->xports); | |
596 | hmap_insert(&xcfg->xbridges, &xbridge->hmap_node, | |
597 | hash_pointer(xbridge->ofproto, 0)); | |
598 | } | |
599 | ||
600 | static void | |
601 | xlate_xbundle_init(struct xlate_cfg *xcfg, struct xbundle *xbundle) | |
602 | { | |
603 | list_init(&xbundle->xports); | |
604 | list_insert(&xbundle->xbridge->xbundles, &xbundle->list_node); | |
605 | hmap_insert(&xcfg->xbundles, &xbundle->hmap_node, | |
606 | hash_pointer(xbundle->ofbundle, 0)); | |
607 | } | |
608 | ||
609 | static void | |
610 | xlate_xport_init(struct xlate_cfg *xcfg, struct xport *xport) | |
611 | { | |
612 | hmap_init(&xport->skb_priorities); | |
613 | hmap_insert(&xcfg->xports, &xport->hmap_node, | |
614 | hash_pointer(xport->ofport, 0)); | |
615 | hmap_insert(&xport->xbridge->xports, &xport->ofp_node, | |
616 | hash_ofp_port(xport->ofp_port)); | |
617 | } | |
618 | ||
619 | static void | |
620 | xlate_xbridge_set(struct xbridge *xbridge, | |
621 | struct dpif *dpif, | |
ec89fc6f | 622 | const struct mac_learning *ml, struct stp *stp, |
9efd308e | 623 | struct rstp *rstp, const struct mcast_snooping *ms, |
ec89fc6f | 624 | const struct mbridge *mbridge, |
46c88433 | 625 | const struct dpif_sflow *sflow, |
ce3955be | 626 | const struct dpif_ipfix *ipfix, |
2f47cdf4 | 627 | const struct netflow *netflow, |
4b97b70d | 628 | bool forward_bpdu, bool has_in_band, |
b440dd8c | 629 | const struct dpif_backer_support *support) |
46c88433 | 630 | { |
46c88433 EJ |
631 | if (xbridge->ml != ml) { |
632 | mac_learning_unref(xbridge->ml); | |
633 | xbridge->ml = mac_learning_ref(ml); | |
634 | } | |
635 | ||
6d95c4e8 FL |
636 | if (xbridge->ms != ms) { |
637 | mcast_snooping_unref(xbridge->ms); | |
638 | xbridge->ms = mcast_snooping_ref(ms); | |
639 | } | |
640 | ||
46c88433 EJ |
641 | if (xbridge->mbridge != mbridge) { |
642 | mbridge_unref(xbridge->mbridge); | |
643 | xbridge->mbridge = mbridge_ref(mbridge); | |
644 | } | |
645 | ||
646 | if (xbridge->sflow != sflow) { | |
647 | dpif_sflow_unref(xbridge->sflow); | |
648 | xbridge->sflow = dpif_sflow_ref(sflow); | |
649 | } | |
650 | ||
651 | if (xbridge->ipfix != ipfix) { | |
652 | dpif_ipfix_unref(xbridge->ipfix); | |
653 | xbridge->ipfix = dpif_ipfix_ref(ipfix); | |
654 | } | |
655 | ||
9d189a50 EJ |
656 | if (xbridge->stp != stp) { |
657 | stp_unref(xbridge->stp); | |
658 | xbridge->stp = stp_ref(stp); | |
659 | } | |
660 | ||
9efd308e DV |
661 | if (xbridge->rstp != rstp) { |
662 | rstp_unref(xbridge->rstp); | |
663 | xbridge->rstp = rstp_ref(rstp); | |
664 | } | |
665 | ||
ce3955be EJ |
666 | if (xbridge->netflow != netflow) { |
667 | netflow_unref(xbridge->netflow); | |
668 | xbridge->netflow = netflow_ref(netflow); | |
669 | } | |
670 | ||
89a8a7f0 | 671 | xbridge->dpif = dpif; |
46c88433 EJ |
672 | xbridge->forward_bpdu = forward_bpdu; |
673 | xbridge->has_in_band = has_in_band; | |
b440dd8c | 674 | xbridge->support = *support; |
46c88433 EJ |
675 | } |
676 | ||
84f0f298 RW |
677 | static void |
678 | xlate_xbundle_set(struct xbundle *xbundle, | |
679 | enum port_vlan_mode vlan_mode, int vlan, | |
680 | unsigned long *trunks, bool use_priority_tags, | |
681 | const struct bond *bond, const struct lacp *lacp, | |
682 | bool floodable) | |
683 | { | |
684 | ovs_assert(xbundle->xbridge); | |
685 | ||
686 | xbundle->vlan_mode = vlan_mode; | |
687 | xbundle->vlan = vlan; | |
688 | xbundle->trunks = trunks; | |
689 | xbundle->use_priority_tags = use_priority_tags; | |
690 | xbundle->floodable = floodable; | |
691 | ||
692 | if (xbundle->bond != bond) { | |
693 | bond_unref(xbundle->bond); | |
694 | xbundle->bond = bond_ref(bond); | |
695 | } | |
696 | ||
697 | if (xbundle->lacp != lacp) { | |
698 | lacp_unref(xbundle->lacp); | |
699 | xbundle->lacp = lacp_ref(lacp); | |
700 | } | |
701 | } | |
702 | ||
703 | static void | |
704 | xlate_xport_set(struct xport *xport, odp_port_t odp_port, | |
705 | const struct netdev *netdev, const struct cfm *cfm, | |
0477baa9 | 706 | const struct bfd *bfd, const struct lldp *lldp, int stp_port_no, |
f025bcb7 | 707 | const struct rstp_port* rstp_port, |
84f0f298 RW |
708 | enum ofputil_port_config config, enum ofputil_port_state state, |
709 | bool is_tunnel, bool may_enable) | |
710 | { | |
711 | xport->config = config; | |
712 | xport->state = state; | |
713 | xport->stp_port_no = stp_port_no; | |
714 | xport->is_tunnel = is_tunnel; | |
715 | xport->may_enable = may_enable; | |
716 | xport->odp_port = odp_port; | |
717 | ||
f025bcb7 JR |
718 | if (xport->rstp_port != rstp_port) { |
719 | rstp_port_unref(xport->rstp_port); | |
720 | xport->rstp_port = rstp_port_ref(rstp_port); | |
721 | } | |
722 | ||
84f0f298 RW |
723 | if (xport->cfm != cfm) { |
724 | cfm_unref(xport->cfm); | |
725 | xport->cfm = cfm_ref(cfm); | |
726 | } | |
727 | ||
728 | if (xport->bfd != bfd) { | |
729 | bfd_unref(xport->bfd); | |
730 | xport->bfd = bfd_ref(bfd); | |
731 | } | |
732 | ||
0477baa9 DF |
733 | if (xport->lldp != lldp) { |
734 | lldp_unref(xport->lldp); | |
735 | xport->lldp = lldp_ref(lldp); | |
736 | } | |
737 | ||
84f0f298 RW |
738 | if (xport->netdev != netdev) { |
739 | netdev_close(xport->netdev); | |
740 | xport->netdev = netdev_ref(netdev); | |
741 | } | |
742 | } | |
743 | ||
744 | static void | |
745 | xlate_xbridge_copy(struct xbridge *xbridge) | |
746 | { | |
747 | struct xbundle *xbundle; | |
748 | struct xport *xport; | |
749 | struct xbridge *new_xbridge = xzalloc(sizeof *xbridge); | |
750 | new_xbridge->ofproto = xbridge->ofproto; | |
751 | new_xbridge->name = xstrdup(xbridge->name); | |
752 | xlate_xbridge_init(new_xcfg, new_xbridge); | |
753 | ||
754 | xlate_xbridge_set(new_xbridge, | |
34dd0d78 | 755 | xbridge->dpif, xbridge->ml, xbridge->stp, |
9efd308e DV |
756 | xbridge->rstp, xbridge->ms, xbridge->mbridge, |
757 | xbridge->sflow, xbridge->ipfix, xbridge->netflow, | |
b440dd8c JS |
758 | xbridge->forward_bpdu, xbridge->has_in_band, |
759 | &xbridge->support); | |
84f0f298 RW |
760 | LIST_FOR_EACH (xbundle, list_node, &xbridge->xbundles) { |
761 | xlate_xbundle_copy(new_xbridge, xbundle); | |
762 | } | |
763 | ||
764 | /* Copy xports which are not part of a xbundle */ | |
765 | HMAP_FOR_EACH (xport, ofp_node, &xbridge->xports) { | |
766 | if (!xport->xbundle) { | |
767 | xlate_xport_copy(new_xbridge, NULL, xport); | |
768 | } | |
769 | } | |
770 | } | |
771 | ||
772 | static void | |
773 | xlate_xbundle_copy(struct xbridge *xbridge, struct xbundle *xbundle) | |
774 | { | |
775 | struct xport *xport; | |
776 | struct xbundle *new_xbundle = xzalloc(sizeof *xbundle); | |
777 | new_xbundle->ofbundle = xbundle->ofbundle; | |
778 | new_xbundle->xbridge = xbridge; | |
779 | new_xbundle->name = xstrdup(xbundle->name); | |
780 | xlate_xbundle_init(new_xcfg, new_xbundle); | |
781 | ||
782 | xlate_xbundle_set(new_xbundle, xbundle->vlan_mode, | |
783 | xbundle->vlan, xbundle->trunks, | |
784 | xbundle->use_priority_tags, xbundle->bond, xbundle->lacp, | |
785 | xbundle->floodable); | |
786 | LIST_FOR_EACH (xport, bundle_node, &xbundle->xports) { | |
787 | xlate_xport_copy(xbridge, new_xbundle, xport); | |
788 | } | |
789 | } | |
790 | ||
791 | static void | |
792 | xlate_xport_copy(struct xbridge *xbridge, struct xbundle *xbundle, | |
793 | struct xport *xport) | |
794 | { | |
795 | struct skb_priority_to_dscp *pdscp, *new_pdscp; | |
796 | struct xport *new_xport = xzalloc(sizeof *xport); | |
797 | new_xport->ofport = xport->ofport; | |
798 | new_xport->ofp_port = xport->ofp_port; | |
799 | new_xport->xbridge = xbridge; | |
800 | xlate_xport_init(new_xcfg, new_xport); | |
801 | ||
802 | xlate_xport_set(new_xport, xport->odp_port, xport->netdev, xport->cfm, | |
0477baa9 DF |
803 | xport->bfd, xport->lldp, xport->stp_port_no, |
804 | xport->rstp_port, xport->config, xport->state, | |
805 | xport->is_tunnel, xport->may_enable); | |
84f0f298 RW |
806 | |
807 | if (xport->peer) { | |
808 | struct xport *peer = xport_lookup(new_xcfg, xport->peer->ofport); | |
809 | if (peer) { | |
810 | new_xport->peer = peer; | |
811 | new_xport->peer->peer = new_xport; | |
812 | } | |
813 | } | |
814 | ||
815 | if (xbundle) { | |
816 | new_xport->xbundle = xbundle; | |
817 | list_insert(&new_xport->xbundle->xports, &new_xport->bundle_node); | |
818 | } | |
819 | ||
820 | HMAP_FOR_EACH (pdscp, hmap_node, &xport->skb_priorities) { | |
821 | new_pdscp = xmalloc(sizeof *pdscp); | |
822 | new_pdscp->skb_priority = pdscp->skb_priority; | |
823 | new_pdscp->dscp = pdscp->dscp; | |
824 | hmap_insert(&new_xport->skb_priorities, &new_pdscp->hmap_node, | |
825 | hash_int(new_pdscp->skb_priority, 0)); | |
826 | } | |
827 | } | |
828 | ||
829 | /* Sets the current xlate configuration to new_xcfg and frees the old xlate | |
830 | * configuration in xcfgp. | |
831 | * | |
832 | * This needs to be called after editing the xlate configuration. | |
833 | * | |
834 | * Functions that edit the new xlate configuration are | |
835 | * xlate_<ofport/bundle/ofport>_set and xlate_<ofport/bundle/ofport>_remove. | |
836 | * | |
837 | * A sample workflow: | |
838 | * | |
839 | * xlate_txn_start(); | |
840 | * ... | |
841 | * edit_xlate_configuration(); | |
842 | * ... | |
843 | * xlate_txn_commit(); */ | |
46c88433 | 844 | void |
84f0f298 RW |
845 | xlate_txn_commit(void) |
846 | { | |
847 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
848 | ||
849 | ovsrcu_set(&xcfgp, new_xcfg); | |
40a9c4c2 AW |
850 | ovsrcu_synchronize(); |
851 | xlate_xcfg_free(xcfg); | |
84f0f298 RW |
852 | new_xcfg = NULL; |
853 | } | |
854 | ||
855 | /* Copies the current xlate configuration in xcfgp to new_xcfg. | |
856 | * | |
857 | * This needs to be called prior to editing the xlate configuration. */ | |
858 | void | |
859 | xlate_txn_start(void) | |
860 | { | |
861 | struct xbridge *xbridge; | |
862 | struct xlate_cfg *xcfg; | |
863 | ||
864 | ovs_assert(!new_xcfg); | |
865 | ||
866 | new_xcfg = xmalloc(sizeof *new_xcfg); | |
867 | hmap_init(&new_xcfg->xbridges); | |
868 | hmap_init(&new_xcfg->xbundles); | |
869 | hmap_init(&new_xcfg->xports); | |
870 | ||
871 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
872 | if (!xcfg) { | |
873 | return; | |
874 | } | |
875 | ||
876 | HMAP_FOR_EACH (xbridge, hmap_node, &xcfg->xbridges) { | |
877 | xlate_xbridge_copy(xbridge); | |
878 | } | |
879 | } | |
880 | ||
881 | ||
882 | static void | |
883 | xlate_xcfg_free(struct xlate_cfg *xcfg) | |
884 | { | |
885 | struct xbridge *xbridge, *next_xbridge; | |
886 | ||
887 | if (!xcfg) { | |
888 | return; | |
889 | } | |
890 | ||
891 | HMAP_FOR_EACH_SAFE (xbridge, next_xbridge, hmap_node, &xcfg->xbridges) { | |
892 | xlate_xbridge_remove(xcfg, xbridge); | |
893 | } | |
894 | ||
895 | hmap_destroy(&xcfg->xbridges); | |
896 | hmap_destroy(&xcfg->xbundles); | |
897 | hmap_destroy(&xcfg->xports); | |
898 | free(xcfg); | |
899 | } | |
900 | ||
901 | void | |
902 | xlate_ofproto_set(struct ofproto_dpif *ofproto, const char *name, | |
34dd0d78 | 903 | struct dpif *dpif, |
84f0f298 | 904 | const struct mac_learning *ml, struct stp *stp, |
9efd308e | 905 | struct rstp *rstp, const struct mcast_snooping *ms, |
84f0f298 RW |
906 | const struct mbridge *mbridge, |
907 | const struct dpif_sflow *sflow, | |
908 | const struct dpif_ipfix *ipfix, | |
2f47cdf4 | 909 | const struct netflow *netflow, |
b440dd8c JS |
910 | bool forward_bpdu, bool has_in_band, |
911 | const struct dpif_backer_support *support) | |
84f0f298 RW |
912 | { |
913 | struct xbridge *xbridge; | |
914 | ||
915 | ovs_assert(new_xcfg); | |
916 | ||
917 | xbridge = xbridge_lookup(new_xcfg, ofproto); | |
918 | if (!xbridge) { | |
919 | xbridge = xzalloc(sizeof *xbridge); | |
920 | xbridge->ofproto = ofproto; | |
921 | ||
922 | xlate_xbridge_init(new_xcfg, xbridge); | |
923 | } | |
924 | ||
925 | free(xbridge->name); | |
926 | xbridge->name = xstrdup(name); | |
927 | ||
34dd0d78 | 928 | xlate_xbridge_set(xbridge, dpif, ml, stp, rstp, ms, mbridge, sflow, ipfix, |
b440dd8c | 929 | netflow, forward_bpdu, has_in_band, support); |
84f0f298 RW |
930 | } |
931 | ||
932 | static void | |
933 | xlate_xbridge_remove(struct xlate_cfg *xcfg, struct xbridge *xbridge) | |
46c88433 | 934 | { |
46c88433 EJ |
935 | struct xbundle *xbundle, *next_xbundle; |
936 | struct xport *xport, *next_xport; | |
937 | ||
938 | if (!xbridge) { | |
939 | return; | |
940 | } | |
941 | ||
942 | HMAP_FOR_EACH_SAFE (xport, next_xport, ofp_node, &xbridge->xports) { | |
84f0f298 | 943 | xlate_xport_remove(xcfg, xport); |
46c88433 EJ |
944 | } |
945 | ||
946 | LIST_FOR_EACH_SAFE (xbundle, next_xbundle, list_node, &xbridge->xbundles) { | |
84f0f298 | 947 | xlate_xbundle_remove(xcfg, xbundle); |
46c88433 EJ |
948 | } |
949 | ||
84f0f298 | 950 | hmap_remove(&xcfg->xbridges, &xbridge->hmap_node); |
795cc5c1 | 951 | mac_learning_unref(xbridge->ml); |
6d95c4e8 | 952 | mcast_snooping_unref(xbridge->ms); |
795cc5c1 EJ |
953 | mbridge_unref(xbridge->mbridge); |
954 | dpif_sflow_unref(xbridge->sflow); | |
955 | dpif_ipfix_unref(xbridge->ipfix); | |
956 | stp_unref(xbridge->stp); | |
9efd308e | 957 | rstp_unref(xbridge->rstp); |
795cc5c1 | 958 | hmap_destroy(&xbridge->xports); |
46c88433 EJ |
959 | free(xbridge->name); |
960 | free(xbridge); | |
961 | } | |
962 | ||
84f0f298 RW |
963 | void |
964 | xlate_remove_ofproto(struct ofproto_dpif *ofproto) | |
965 | { | |
966 | struct xbridge *xbridge; | |
967 | ||
968 | ovs_assert(new_xcfg); | |
969 | ||
970 | xbridge = xbridge_lookup(new_xcfg, ofproto); | |
971 | xlate_xbridge_remove(new_xcfg, xbridge); | |
972 | } | |
973 | ||
46c88433 EJ |
974 | void |
975 | xlate_bundle_set(struct ofproto_dpif *ofproto, struct ofbundle *ofbundle, | |
976 | const char *name, enum port_vlan_mode vlan_mode, int vlan, | |
977 | unsigned long *trunks, bool use_priority_tags, | |
978 | const struct bond *bond, const struct lacp *lacp, | |
979 | bool floodable) | |
980 | { | |
84f0f298 | 981 | struct xbundle *xbundle; |
46c88433 | 982 | |
84f0f298 RW |
983 | ovs_assert(new_xcfg); |
984 | ||
985 | xbundle = xbundle_lookup(new_xcfg, ofbundle); | |
46c88433 EJ |
986 | if (!xbundle) { |
987 | xbundle = xzalloc(sizeof *xbundle); | |
988 | xbundle->ofbundle = ofbundle; | |
84f0f298 | 989 | xbundle->xbridge = xbridge_lookup(new_xcfg, ofproto); |
46c88433 | 990 | |
84f0f298 | 991 | xlate_xbundle_init(new_xcfg, xbundle); |
46c88433 EJ |
992 | } |
993 | ||
46c88433 EJ |
994 | free(xbundle->name); |
995 | xbundle->name = xstrdup(name); | |
996 | ||
84f0f298 RW |
997 | xlate_xbundle_set(xbundle, vlan_mode, vlan, trunks, |
998 | use_priority_tags, bond, lacp, floodable); | |
46c88433 EJ |
999 | } |
1000 | ||
84f0f298 RW |
1001 | static void |
1002 | xlate_xbundle_remove(struct xlate_cfg *xcfg, struct xbundle *xbundle) | |
46c88433 | 1003 | { |
5f03c983 | 1004 | struct xport *xport; |
46c88433 EJ |
1005 | |
1006 | if (!xbundle) { | |
1007 | return; | |
1008 | } | |
1009 | ||
5f03c983 | 1010 | LIST_FOR_EACH_POP (xport, bundle_node, &xbundle->xports) { |
46c88433 EJ |
1011 | xport->xbundle = NULL; |
1012 | } | |
1013 | ||
84f0f298 | 1014 | hmap_remove(&xcfg->xbundles, &xbundle->hmap_node); |
46c88433 EJ |
1015 | list_remove(&xbundle->list_node); |
1016 | bond_unref(xbundle->bond); | |
1017 | lacp_unref(xbundle->lacp); | |
1018 | free(xbundle->name); | |
1019 | free(xbundle); | |
1020 | } | |
1021 | ||
84f0f298 RW |
1022 | void |
1023 | xlate_bundle_remove(struct ofbundle *ofbundle) | |
1024 | { | |
1025 | struct xbundle *xbundle; | |
1026 | ||
1027 | ovs_assert(new_xcfg); | |
1028 | ||
1029 | xbundle = xbundle_lookup(new_xcfg, ofbundle); | |
1030 | xlate_xbundle_remove(new_xcfg, xbundle); | |
1031 | } | |
1032 | ||
46c88433 EJ |
1033 | void |
1034 | xlate_ofport_set(struct ofproto_dpif *ofproto, struct ofbundle *ofbundle, | |
1035 | struct ofport_dpif *ofport, ofp_port_t ofp_port, | |
1036 | odp_port_t odp_port, const struct netdev *netdev, | |
1037 | const struct cfm *cfm, const struct bfd *bfd, | |
0477baa9 DF |
1038 | const struct lldp *lldp, struct ofport_dpif *peer, |
1039 | int stp_port_no, const struct rstp_port *rstp_port, | |
55954f6e | 1040 | const struct ofproto_port_queue *qdscp_list, size_t n_qdscp, |
dd8cd4b4 SH |
1041 | enum ofputil_port_config config, |
1042 | enum ofputil_port_state state, bool is_tunnel, | |
9d189a50 | 1043 | bool may_enable) |
46c88433 | 1044 | { |
55954f6e | 1045 | size_t i; |
84f0f298 RW |
1046 | struct xport *xport; |
1047 | ||
1048 | ovs_assert(new_xcfg); | |
46c88433 | 1049 | |
84f0f298 | 1050 | xport = xport_lookup(new_xcfg, ofport); |
46c88433 EJ |
1051 | if (!xport) { |
1052 | xport = xzalloc(sizeof *xport); | |
1053 | xport->ofport = ofport; | |
84f0f298 | 1054 | xport->xbridge = xbridge_lookup(new_xcfg, ofproto); |
46c88433 EJ |
1055 | xport->ofp_port = ofp_port; |
1056 | ||
84f0f298 | 1057 | xlate_xport_init(new_xcfg, xport); |
46c88433 EJ |
1058 | } |
1059 | ||
1060 | ovs_assert(xport->ofp_port == ofp_port); | |
1061 | ||
0477baa9 DF |
1062 | xlate_xport_set(xport, odp_port, netdev, cfm, bfd, lldp, |
1063 | stp_port_no, rstp_port, config, state, is_tunnel, | |
1064 | may_enable); | |
46c88433 EJ |
1065 | |
1066 | if (xport->peer) { | |
1067 | xport->peer->peer = NULL; | |
1068 | } | |
84f0f298 | 1069 | xport->peer = xport_lookup(new_xcfg, peer); |
46c88433 EJ |
1070 | if (xport->peer) { |
1071 | xport->peer->peer = xport; | |
1072 | } | |
1073 | ||
1074 | if (xport->xbundle) { | |
1075 | list_remove(&xport->bundle_node); | |
1076 | } | |
84f0f298 | 1077 | xport->xbundle = xbundle_lookup(new_xcfg, ofbundle); |
46c88433 EJ |
1078 | if (xport->xbundle) { |
1079 | list_insert(&xport->xbundle->xports, &xport->bundle_node); | |
1080 | } | |
55954f6e EJ |
1081 | |
1082 | clear_skb_priorities(xport); | |
1083 | for (i = 0; i < n_qdscp; i++) { | |
1084 | struct skb_priority_to_dscp *pdscp; | |
1085 | uint32_t skb_priority; | |
1086 | ||
89a8a7f0 EJ |
1087 | if (dpif_queue_to_priority(xport->xbridge->dpif, qdscp_list[i].queue, |
1088 | &skb_priority)) { | |
55954f6e EJ |
1089 | continue; |
1090 | } | |
1091 | ||
1092 | pdscp = xmalloc(sizeof *pdscp); | |
1093 | pdscp->skb_priority = skb_priority; | |
1094 | pdscp->dscp = (qdscp_list[i].dscp << 2) & IP_DSCP_MASK; | |
1095 | hmap_insert(&xport->skb_priorities, &pdscp->hmap_node, | |
1096 | hash_int(pdscp->skb_priority, 0)); | |
1097 | } | |
46c88433 EJ |
1098 | } |
1099 | ||
84f0f298 RW |
1100 | static void |
1101 | xlate_xport_remove(struct xlate_cfg *xcfg, struct xport *xport) | |
46c88433 | 1102 | { |
46c88433 EJ |
1103 | if (!xport) { |
1104 | return; | |
1105 | } | |
1106 | ||
1107 | if (xport->peer) { | |
1108 | xport->peer->peer = NULL; | |
1109 | xport->peer = NULL; | |
1110 | } | |
1111 | ||
e621a12d EJ |
1112 | if (xport->xbundle) { |
1113 | list_remove(&xport->bundle_node); | |
1114 | } | |
1115 | ||
55954f6e EJ |
1116 | clear_skb_priorities(xport); |
1117 | hmap_destroy(&xport->skb_priorities); | |
1118 | ||
84f0f298 | 1119 | hmap_remove(&xcfg->xports, &xport->hmap_node); |
46c88433 EJ |
1120 | hmap_remove(&xport->xbridge->xports, &xport->ofp_node); |
1121 | ||
1122 | netdev_close(xport->netdev); | |
f025bcb7 | 1123 | rstp_port_unref(xport->rstp_port); |
46c88433 EJ |
1124 | cfm_unref(xport->cfm); |
1125 | bfd_unref(xport->bfd); | |
0477baa9 | 1126 | lldp_unref(xport->lldp); |
46c88433 EJ |
1127 | free(xport); |
1128 | } | |
1129 | ||
84f0f298 RW |
1130 | void |
1131 | xlate_ofport_remove(struct ofport_dpif *ofport) | |
1132 | { | |
1133 | struct xport *xport; | |
1134 | ||
1135 | ovs_assert(new_xcfg); | |
1136 | ||
1137 | xport = xport_lookup(new_xcfg, ofport); | |
1138 | xlate_xport_remove(new_xcfg, xport); | |
1139 | } | |
1140 | ||
ef377a58 JR |
1141 | static struct ofproto_dpif * |
1142 | xlate_lookup_ofproto_(const struct dpif_backer *backer, const struct flow *flow, | |
1143 | ofp_port_t *ofp_in_port, const struct xport **xportp) | |
1144 | { | |
e672ff9b | 1145 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
ef377a58 | 1146 | const struct xport *xport; |
f9038ef6 | 1147 | |
e672ff9b JR |
1148 | xport = xport_lookup(xcfg, tnl_port_should_receive(flow) |
1149 | ? tnl_port_receive(flow) | |
1150 | : odp_port_to_ofport(backer, flow->in_port.odp_port)); | |
1151 | if (OVS_UNLIKELY(!xport)) { | |
1152 | return NULL; | |
ef377a58 | 1153 | } |
e672ff9b | 1154 | *xportp = xport; |
f9038ef6 | 1155 | if (ofp_in_port) { |
e672ff9b | 1156 | *ofp_in_port = xport->ofp_port; |
f9038ef6 | 1157 | } |
e672ff9b | 1158 | return xport->xbridge->ofproto; |
ef377a58 JR |
1159 | } |
1160 | ||
1161 | /* Given a datapath and flow metadata ('backer', and 'flow' respectively) | |
1162 | * returns the corresponding struct ofproto_dpif and OpenFlow port number. */ | |
1163 | struct ofproto_dpif * | |
1164 | xlate_lookup_ofproto(const struct dpif_backer *backer, const struct flow *flow, | |
1165 | ofp_port_t *ofp_in_port) | |
1166 | { | |
1167 | const struct xport *xport; | |
1168 | ||
1169 | return xlate_lookup_ofproto_(backer, flow, ofp_in_port, &xport); | |
1170 | } | |
1171 | ||
cc377352 | 1172 | /* Given a datapath and flow metadata ('backer', and 'flow' respectively), |
ef377a58 | 1173 | * optionally populates 'ofproto' with the ofproto_dpif, 'ofp_in_port' with the |
cc377352 | 1174 | * openflow in_port, and 'ipfix', 'sflow', and 'netflow' with the appropriate |
dcc2c6cd JR |
1175 | * handles for those protocols if they're enabled. Caller may use the returned |
1176 | * pointers until quiescing, for longer term use additional references must | |
1177 | * be taken. | |
8449c4d6 | 1178 | * |
f9038ef6 | 1179 | * Returns 0 if successful, ENODEV if the parsed flow has no associated ofproto. |
ef377a58 | 1180 | */ |
8449c4d6 | 1181 | int |
5c476ea3 JR |
1182 | xlate_lookup(const struct dpif_backer *backer, const struct flow *flow, |
1183 | struct ofproto_dpif **ofprotop, struct dpif_ipfix **ipfix, | |
1184 | struct dpif_sflow **sflow, struct netflow **netflow, | |
1185 | ofp_port_t *ofp_in_port) | |
8449c4d6 | 1186 | { |
ef377a58 | 1187 | struct ofproto_dpif *ofproto; |
84f0f298 | 1188 | const struct xport *xport; |
8449c4d6 | 1189 | |
ef377a58 | 1190 | ofproto = xlate_lookup_ofproto_(backer, flow, ofp_in_port, &xport); |
8449c4d6 | 1191 | |
f9038ef6 | 1192 | if (!ofproto) { |
cc377352 | 1193 | return ENODEV; |
8449c4d6 | 1194 | } |
8449c4d6 | 1195 | |
ef377a58 JR |
1196 | if (ofprotop) { |
1197 | *ofprotop = ofproto; | |
8449c4d6 EJ |
1198 | } |
1199 | ||
1dfdb9b3 | 1200 | if (ipfix) { |
f9038ef6 | 1201 | *ipfix = xport ? xport->xbridge->ipfix : NULL; |
1dfdb9b3 EJ |
1202 | } |
1203 | ||
1204 | if (sflow) { | |
f9038ef6 | 1205 | *sflow = xport ? xport->xbridge->sflow : NULL; |
1dfdb9b3 EJ |
1206 | } |
1207 | ||
1208 | if (netflow) { | |
f9038ef6 | 1209 | *netflow = xport ? xport->xbridge->netflow : NULL; |
1dfdb9b3 | 1210 | } |
f9038ef6 | 1211 | |
cc377352 | 1212 | return 0; |
8449c4d6 EJ |
1213 | } |
1214 | ||
46c88433 | 1215 | static struct xbridge * |
84f0f298 | 1216 | xbridge_lookup(struct xlate_cfg *xcfg, const struct ofproto_dpif *ofproto) |
46c88433 | 1217 | { |
84f0f298 | 1218 | struct hmap *xbridges; |
46c88433 EJ |
1219 | struct xbridge *xbridge; |
1220 | ||
84f0f298 | 1221 | if (!ofproto || !xcfg) { |
5e6af486 EJ |
1222 | return NULL; |
1223 | } | |
1224 | ||
84f0f298 RW |
1225 | xbridges = &xcfg->xbridges; |
1226 | ||
46c88433 | 1227 | HMAP_FOR_EACH_IN_BUCKET (xbridge, hmap_node, hash_pointer(ofproto, 0), |
84f0f298 | 1228 | xbridges) { |
46c88433 EJ |
1229 | if (xbridge->ofproto == ofproto) { |
1230 | return xbridge; | |
1231 | } | |
1232 | } | |
1233 | return NULL; | |
1234 | } | |
1235 | ||
1236 | static struct xbundle * | |
84f0f298 | 1237 | xbundle_lookup(struct xlate_cfg *xcfg, const struct ofbundle *ofbundle) |
46c88433 | 1238 | { |
84f0f298 | 1239 | struct hmap *xbundles; |
46c88433 EJ |
1240 | struct xbundle *xbundle; |
1241 | ||
84f0f298 | 1242 | if (!ofbundle || !xcfg) { |
5e6af486 EJ |
1243 | return NULL; |
1244 | } | |
1245 | ||
84f0f298 RW |
1246 | xbundles = &xcfg->xbundles; |
1247 | ||
46c88433 | 1248 | HMAP_FOR_EACH_IN_BUCKET (xbundle, hmap_node, hash_pointer(ofbundle, 0), |
84f0f298 | 1249 | xbundles) { |
46c88433 EJ |
1250 | if (xbundle->ofbundle == ofbundle) { |
1251 | return xbundle; | |
1252 | } | |
1253 | } | |
1254 | return NULL; | |
1255 | } | |
1256 | ||
1257 | static struct xport * | |
84f0f298 | 1258 | xport_lookup(struct xlate_cfg *xcfg, const struct ofport_dpif *ofport) |
46c88433 | 1259 | { |
84f0f298 | 1260 | struct hmap *xports; |
46c88433 EJ |
1261 | struct xport *xport; |
1262 | ||
84f0f298 | 1263 | if (!ofport || !xcfg) { |
5e6af486 EJ |
1264 | return NULL; |
1265 | } | |
1266 | ||
84f0f298 RW |
1267 | xports = &xcfg->xports; |
1268 | ||
46c88433 | 1269 | HMAP_FOR_EACH_IN_BUCKET (xport, hmap_node, hash_pointer(ofport, 0), |
84f0f298 | 1270 | xports) { |
46c88433 EJ |
1271 | if (xport->ofport == ofport) { |
1272 | return xport; | |
1273 | } | |
1274 | } | |
1275 | return NULL; | |
1276 | } | |
1277 | ||
40085e56 EJ |
1278 | static struct stp_port * |
1279 | xport_get_stp_port(const struct xport *xport) | |
1280 | { | |
92cf817b | 1281 | return xport->xbridge->stp && xport->stp_port_no != -1 |
40085e56 EJ |
1282 | ? stp_get_port(xport->xbridge->stp, xport->stp_port_no) |
1283 | : NULL; | |
1284 | } | |
9d189a50 | 1285 | |
0d1cee12 | 1286 | static bool |
9d189a50 EJ |
1287 | xport_stp_learn_state(const struct xport *xport) |
1288 | { | |
40085e56 | 1289 | struct stp_port *sp = xport_get_stp_port(xport); |
4b5f1996 DV |
1290 | return sp |
1291 | ? stp_learn_in_state(stp_port_get_state(sp)) | |
1292 | : true; | |
9d189a50 EJ |
1293 | } |
1294 | ||
1295 | static bool | |
1296 | xport_stp_forward_state(const struct xport *xport) | |
1297 | { | |
40085e56 | 1298 | struct stp_port *sp = xport_get_stp_port(xport); |
4b5f1996 DV |
1299 | return sp |
1300 | ? stp_forward_in_state(stp_port_get_state(sp)) | |
1301 | : true; | |
9d189a50 EJ |
1302 | } |
1303 | ||
0d1cee12 | 1304 | static bool |
bacdb85a | 1305 | xport_stp_should_forward_bpdu(const struct xport *xport) |
0d1cee12 K |
1306 | { |
1307 | struct stp_port *sp = xport_get_stp_port(xport); | |
bacdb85a | 1308 | return stp_should_forward_bpdu(sp ? stp_port_get_state(sp) : STP_DISABLED); |
0d1cee12 K |
1309 | } |
1310 | ||
9d189a50 EJ |
1311 | /* Returns true if STP should process 'flow'. Sets fields in 'wc' that |
1312 | * were used to make the determination.*/ | |
1313 | static bool | |
1314 | stp_should_process_flow(const struct flow *flow, struct flow_wildcards *wc) | |
1315 | { | |
bbbca389 | 1316 | /* is_stp() also checks dl_type, but dl_type is always set in 'wc'. */ |
9d189a50 | 1317 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); |
bbbca389 | 1318 | return is_stp(flow); |
9d189a50 EJ |
1319 | } |
1320 | ||
1321 | static void | |
cf62fa4c | 1322 | stp_process_packet(const struct xport *xport, const struct dp_packet *packet) |
9d189a50 | 1323 | { |
40085e56 | 1324 | struct stp_port *sp = xport_get_stp_port(xport); |
cf62fa4c PS |
1325 | struct dp_packet payload = *packet; |
1326 | struct eth_header *eth = dp_packet_data(&payload); | |
9d189a50 EJ |
1327 | |
1328 | /* Sink packets on ports that have STP disabled when the bridge has | |
1329 | * STP enabled. */ | |
1330 | if (!sp || stp_port_get_state(sp) == STP_DISABLED) { | |
1331 | return; | |
1332 | } | |
1333 | ||
1334 | /* Trim off padding on payload. */ | |
cf62fa4c PS |
1335 | if (dp_packet_size(&payload) > ntohs(eth->eth_type) + ETH_HEADER_LEN) { |
1336 | dp_packet_set_size(&payload, ntohs(eth->eth_type) + ETH_HEADER_LEN); | |
9d189a50 EJ |
1337 | } |
1338 | ||
cf62fa4c PS |
1339 | if (dp_packet_try_pull(&payload, ETH_HEADER_LEN + LLC_HEADER_LEN)) { |
1340 | stp_received_bpdu(sp, dp_packet_data(&payload), dp_packet_size(&payload)); | |
9d189a50 EJ |
1341 | } |
1342 | } | |
1343 | ||
f025bcb7 JR |
1344 | static enum rstp_state |
1345 | xport_get_rstp_port_state(const struct xport *xport) | |
9efd308e | 1346 | { |
f025bcb7 JR |
1347 | return xport->rstp_port |
1348 | ? rstp_port_get_state(xport->rstp_port) | |
1349 | : RSTP_DISABLED; | |
9efd308e DV |
1350 | } |
1351 | ||
1352 | static bool | |
1353 | xport_rstp_learn_state(const struct xport *xport) | |
1354 | { | |
4b5f1996 DV |
1355 | return xport->xbridge->rstp && xport->rstp_port |
1356 | ? rstp_learn_in_state(xport_get_rstp_port_state(xport)) | |
1357 | : true; | |
9efd308e DV |
1358 | } |
1359 | ||
1360 | static bool | |
1361 | xport_rstp_forward_state(const struct xport *xport) | |
1362 | { | |
4b5f1996 DV |
1363 | return xport->xbridge->rstp && xport->rstp_port |
1364 | ? rstp_forward_in_state(xport_get_rstp_port_state(xport)) | |
1365 | : true; | |
9efd308e DV |
1366 | } |
1367 | ||
1368 | static bool | |
1369 | xport_rstp_should_manage_bpdu(const struct xport *xport) | |
1370 | { | |
f025bcb7 | 1371 | return rstp_should_manage_bpdu(xport_get_rstp_port_state(xport)); |
9efd308e DV |
1372 | } |
1373 | ||
1374 | static void | |
cf62fa4c | 1375 | rstp_process_packet(const struct xport *xport, const struct dp_packet *packet) |
9efd308e | 1376 | { |
cf62fa4c PS |
1377 | struct dp_packet payload = *packet; |
1378 | struct eth_header *eth = dp_packet_data(&payload); | |
9efd308e | 1379 | |
f025bcb7 JR |
1380 | /* Sink packets on ports that have no RSTP. */ |
1381 | if (!xport->rstp_port) { | |
9efd308e DV |
1382 | return; |
1383 | } | |
1384 | ||
1385 | /* Trim off padding on payload. */ | |
cf62fa4c PS |
1386 | if (dp_packet_size(&payload) > ntohs(eth->eth_type) + ETH_HEADER_LEN) { |
1387 | dp_packet_set_size(&payload, ntohs(eth->eth_type) + ETH_HEADER_LEN); | |
9efd308e DV |
1388 | } |
1389 | ||
cf62fa4c PS |
1390 | if (dp_packet_try_pull(&payload, ETH_HEADER_LEN + LLC_HEADER_LEN)) { |
1391 | rstp_port_received_bpdu(xport->rstp_port, dp_packet_data(&payload), | |
1392 | dp_packet_size(&payload)); | |
9efd308e DV |
1393 | } |
1394 | } | |
1395 | ||
46c88433 EJ |
1396 | static struct xport * |
1397 | get_ofp_port(const struct xbridge *xbridge, ofp_port_t ofp_port) | |
1398 | { | |
1399 | struct xport *xport; | |
1400 | ||
1401 | HMAP_FOR_EACH_IN_BUCKET (xport, ofp_node, hash_ofp_port(ofp_port), | |
1402 | &xbridge->xports) { | |
1403 | if (xport->ofp_port == ofp_port) { | |
1404 | return xport; | |
1405 | } | |
1406 | } | |
1407 | return NULL; | |
1408 | } | |
1409 | ||
1410 | static odp_port_t | |
1411 | ofp_port_to_odp_port(const struct xbridge *xbridge, ofp_port_t ofp_port) | |
1412 | { | |
1413 | const struct xport *xport = get_ofp_port(xbridge, ofp_port); | |
1414 | return xport ? xport->odp_port : ODPP_NONE; | |
1415 | } | |
1416 | ||
dd8cd4b4 SH |
1417 | static bool |
1418 | odp_port_is_alive(const struct xlate_ctx *ctx, ofp_port_t ofp_port) | |
1419 | { | |
086fa873 BP |
1420 | struct xport *xport = get_ofp_port(ctx->xbridge, ofp_port); |
1421 | return xport && xport->may_enable; | |
dd8cd4b4 SH |
1422 | } |
1423 | ||
1e684d7d | 1424 | static struct ofputil_bucket * |
dd8cd4b4 SH |
1425 | group_first_live_bucket(const struct xlate_ctx *, const struct group_dpif *, |
1426 | int depth); | |
1427 | ||
1428 | static bool | |
1429 | group_is_alive(const struct xlate_ctx *ctx, uint32_t group_id, int depth) | |
1430 | { | |
1431 | struct group_dpif *group; | |
dd8cd4b4 | 1432 | |
dc25893e AZ |
1433 | if (group_dpif_lookup(ctx->xbridge->ofproto, group_id, &group)) { |
1434 | struct ofputil_bucket *bucket; | |
dd8cd4b4 | 1435 | |
dc25893e AZ |
1436 | bucket = group_first_live_bucket(ctx, group, depth); |
1437 | group_dpif_unref(group); | |
1438 | return bucket == NULL; | |
1439 | } | |
dd8cd4b4 | 1440 | |
dc25893e | 1441 | return false; |
dd8cd4b4 SH |
1442 | } |
1443 | ||
1444 | #define MAX_LIVENESS_RECURSION 128 /* Arbitrary limit */ | |
1445 | ||
1446 | static bool | |
1447 | bucket_is_alive(const struct xlate_ctx *ctx, | |
1e684d7d | 1448 | struct ofputil_bucket *bucket, int depth) |
dd8cd4b4 SH |
1449 | { |
1450 | if (depth >= MAX_LIVENESS_RECURSION) { | |
1451 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); | |
1452 | ||
1453 | VLOG_WARN_RL(&rl, "bucket chaining exceeded %d links", | |
1454 | MAX_LIVENESS_RECURSION); | |
1455 | return false; | |
1456 | } | |
1457 | ||
fdb1999b AZ |
1458 | return (!ofputil_bucket_has_liveness(bucket) |
1459 | || (bucket->watch_port != OFPP_ANY | |
1460 | && odp_port_is_alive(ctx, bucket->watch_port)) | |
1461 | || (bucket->watch_group != OFPG_ANY | |
1462 | && group_is_alive(ctx, bucket->watch_group, depth + 1))); | |
dd8cd4b4 SH |
1463 | } |
1464 | ||
1e684d7d | 1465 | static struct ofputil_bucket * |
dd8cd4b4 SH |
1466 | group_first_live_bucket(const struct xlate_ctx *ctx, |
1467 | const struct group_dpif *group, int depth) | |
1468 | { | |
1469 | struct ofputil_bucket *bucket; | |
ca6ba700 | 1470 | const struct ovs_list *buckets; |
dd8cd4b4 SH |
1471 | |
1472 | group_dpif_get_buckets(group, &buckets); | |
1473 | LIST_FOR_EACH (bucket, list_node, buckets) { | |
1474 | if (bucket_is_alive(ctx, bucket, depth)) { | |
1475 | return bucket; | |
1476 | } | |
1477 | } | |
1478 | ||
1479 | return NULL; | |
1480 | } | |
1481 | ||
1e684d7d | 1482 | static struct ofputil_bucket * |
fe7e5749 SH |
1483 | group_best_live_bucket(const struct xlate_ctx *ctx, |
1484 | const struct group_dpif *group, | |
1485 | uint32_t basis) | |
1486 | { | |
1e684d7d | 1487 | struct ofputil_bucket *best_bucket = NULL; |
fe7e5749 SH |
1488 | uint32_t best_score = 0; |
1489 | int i = 0; | |
1490 | ||
1e684d7d | 1491 | struct ofputil_bucket *bucket; |
ca6ba700 | 1492 | const struct ovs_list *buckets; |
fe7e5749 SH |
1493 | |
1494 | group_dpif_get_buckets(group, &buckets); | |
1495 | LIST_FOR_EACH (bucket, list_node, buckets) { | |
1496 | if (bucket_is_alive(ctx, bucket, 0)) { | |
7cb279c2 | 1497 | uint32_t score = (hash_int(i, basis) & 0xffff) * bucket->weight; |
fe7e5749 SH |
1498 | if (score >= best_score) { |
1499 | best_bucket = bucket; | |
1500 | best_score = score; | |
1501 | } | |
1502 | } | |
1503 | i++; | |
1504 | } | |
1505 | ||
1506 | return best_bucket; | |
1507 | } | |
1508 | ||
9583bc14 | 1509 | static bool |
46c88433 | 1510 | xbundle_trunks_vlan(const struct xbundle *bundle, uint16_t vlan) |
9583bc14 EJ |
1511 | { |
1512 | return (bundle->vlan_mode != PORT_VLAN_ACCESS | |
1513 | && (!bundle->trunks || bitmap_is_set(bundle->trunks, vlan))); | |
1514 | } | |
1515 | ||
1516 | static bool | |
46c88433 EJ |
1517 | xbundle_includes_vlan(const struct xbundle *xbundle, uint16_t vlan) |
1518 | { | |
1519 | return vlan == xbundle->vlan || xbundle_trunks_vlan(xbundle, vlan); | |
1520 | } | |
1521 | ||
1522 | static mirror_mask_t | |
1523 | xbundle_mirror_out(const struct xbridge *xbridge, struct xbundle *xbundle) | |
1524 | { | |
1525 | return xbundle != &ofpp_none_bundle | |
1526 | ? mirror_bundle_out(xbridge->mbridge, xbundle->ofbundle) | |
1527 | : 0; | |
1528 | } | |
1529 | ||
1530 | static mirror_mask_t | |
1531 | xbundle_mirror_src(const struct xbridge *xbridge, struct xbundle *xbundle) | |
9583bc14 | 1532 | { |
46c88433 EJ |
1533 | return xbundle != &ofpp_none_bundle |
1534 | ? mirror_bundle_src(xbridge->mbridge, xbundle->ofbundle) | |
1535 | : 0; | |
9583bc14 EJ |
1536 | } |
1537 | ||
46c88433 EJ |
1538 | static mirror_mask_t |
1539 | xbundle_mirror_dst(const struct xbridge *xbridge, struct xbundle *xbundle) | |
9583bc14 | 1540 | { |
46c88433 EJ |
1541 | return xbundle != &ofpp_none_bundle |
1542 | ? mirror_bundle_dst(xbridge->mbridge, xbundle->ofbundle) | |
1543 | : 0; | |
1544 | } | |
1545 | ||
1546 | static struct xbundle * | |
1547 | lookup_input_bundle(const struct xbridge *xbridge, ofp_port_t in_port, | |
1548 | bool warn, struct xport **in_xportp) | |
1549 | { | |
1550 | struct xport *xport; | |
9583bc14 EJ |
1551 | |
1552 | /* Find the port and bundle for the received packet. */ | |
46c88433 EJ |
1553 | xport = get_ofp_port(xbridge, in_port); |
1554 | if (in_xportp) { | |
1555 | *in_xportp = xport; | |
9583bc14 | 1556 | } |
46c88433 EJ |
1557 | if (xport && xport->xbundle) { |
1558 | return xport->xbundle; | |
9583bc14 EJ |
1559 | } |
1560 | ||
6362203b YT |
1561 | /* Special-case OFPP_NONE (OF1.0) and OFPP_CONTROLLER (OF1.1+), |
1562 | * which a controller may use as the ingress port for traffic that | |
1563 | * it is sourcing. */ | |
1564 | if (in_port == OFPP_CONTROLLER || in_port == OFPP_NONE) { | |
9583bc14 EJ |
1565 | return &ofpp_none_bundle; |
1566 | } | |
1567 | ||
1568 | /* Odd. A few possible reasons here: | |
1569 | * | |
1570 | * - We deleted a port but there are still a few packets queued up | |
1571 | * from it. | |
1572 | * | |
1573 | * - Someone externally added a port (e.g. "ovs-dpctl add-if") that | |
1574 | * we don't know about. | |
1575 | * | |
1576 | * - The ofproto client didn't configure the port as part of a bundle. | |
1577 | * This is particularly likely to happen if a packet was received on the | |
1578 | * port after it was created, but before the client had a chance to | |
1579 | * configure its bundle. | |
1580 | */ | |
1581 | if (warn) { | |
1582 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
1583 | ||
1584 | VLOG_WARN_RL(&rl, "bridge %s: received packet on unknown " | |
46c88433 | 1585 | "port %"PRIu16, xbridge->name, in_port); |
9583bc14 EJ |
1586 | } |
1587 | return NULL; | |
1588 | } | |
1589 | ||
1590 | static void | |
7efbc3b7 BP |
1591 | mirror_packet(struct xlate_ctx *ctx, struct xbundle *xbundle, |
1592 | mirror_mask_t mirrors) | |
9583bc14 | 1593 | { |
7efbc3b7 BP |
1594 | bool warn = ctx->xin->packet != NULL; |
1595 | uint16_t vid = vlan_tci_to_vid(ctx->xin->flow.vlan_tci); | |
1596 | if (!input_vid_is_valid(vid, xbundle, warn)) { | |
9583bc14 EJ |
1597 | return; |
1598 | } | |
7efbc3b7 | 1599 | uint16_t vlan = input_vid_to_vlan(xbundle, vid); |
9583bc14 | 1600 | |
7efbc3b7 | 1601 | const struct xbridge *xbridge = ctx->xbridge; |
9583bc14 | 1602 | |
7efbc3b7 BP |
1603 | /* Don't mirror to destinations that we've already mirrored to. */ |
1604 | mirrors &= ~ctx->mirrors; | |
9583bc14 EJ |
1605 | if (!mirrors) { |
1606 | return; | |
1607 | } | |
1608 | ||
7efbc3b7 BP |
1609 | /* Record these mirrors so that we don't mirror to them again. */ |
1610 | ctx->mirrors |= mirrors; | |
1611 | ||
1612 | if (ctx->xin->resubmit_stats) { | |
1613 | mirror_update_stats(xbridge->mbridge, mirrors, | |
1614 | ctx->xin->resubmit_stats->n_packets, | |
1615 | ctx->xin->resubmit_stats->n_bytes); | |
1616 | } | |
1617 | if (ctx->xin->xcache) { | |
1618 | struct xc_entry *entry; | |
1619 | ||
1620 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_MIRROR); | |
1621 | entry->u.mirror.mbridge = mbridge_ref(xbridge->mbridge); | |
1622 | entry->u.mirror.mirrors = mirrors; | |
1623 | } | |
9583bc14 EJ |
1624 | |
1625 | while (mirrors) { | |
7efbc3b7 | 1626 | const unsigned long *vlans; |
ec7ceaed EJ |
1627 | mirror_mask_t dup_mirrors; |
1628 | struct ofbundle *out; | |
ec7ceaed EJ |
1629 | int out_vlan; |
1630 | ||
7efbc3b7 BP |
1631 | bool has_mirror = mirror_get(xbridge->mbridge, raw_ctz(mirrors), |
1632 | &vlans, &dup_mirrors, &out, &out_vlan); | |
ec7ceaed EJ |
1633 | ovs_assert(has_mirror); |
1634 | ||
1635 | if (vlans) { | |
49a73e0c | 1636 | ctx->wc->masks.vlan_tci |= htons(VLAN_CFI | VLAN_VID_MASK); |
9583bc14 EJ |
1637 | } |
1638 | ||
7efbc3b7 | 1639 | if (vlans && !bitmap_is_set(vlans, vlan)) { |
9583bc14 EJ |
1640 | mirrors = zero_rightmost_1bit(mirrors); |
1641 | continue; | |
1642 | } | |
1643 | ||
ec7ceaed | 1644 | mirrors &= ~dup_mirrors; |
3d6151f3 | 1645 | ctx->mirrors |= dup_mirrors; |
ec7ceaed | 1646 | if (out) { |
84f0f298 RW |
1647 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
1648 | struct xbundle *out_xbundle = xbundle_lookup(xcfg, out); | |
46c88433 EJ |
1649 | if (out_xbundle) { |
1650 | output_normal(ctx, out_xbundle, vlan); | |
1651 | } | |
ec7ceaed | 1652 | } else if (vlan != out_vlan |
7efbc3b7 | 1653 | && !eth_addr_is_reserved(ctx->xin->flow.dl_dst)) { |
46c88433 | 1654 | struct xbundle *xbundle; |
9583bc14 | 1655 | |
46c88433 EJ |
1656 | LIST_FOR_EACH (xbundle, list_node, &xbridge->xbundles) { |
1657 | if (xbundle_includes_vlan(xbundle, out_vlan) | |
1658 | && !xbundle_mirror_out(xbridge, xbundle)) { | |
1659 | output_normal(ctx, xbundle, out_vlan); | |
9583bc14 EJ |
1660 | } |
1661 | } | |
1662 | } | |
1663 | } | |
1664 | } | |
1665 | ||
7efbc3b7 BP |
1666 | static void |
1667 | mirror_ingress_packet(struct xlate_ctx *ctx) | |
1668 | { | |
1669 | if (mbridge_has_mirrors(ctx->xbridge->mbridge)) { | |
1670 | bool warn = ctx->xin->packet != NULL; | |
1671 | struct xbundle *xbundle = lookup_input_bundle( | |
1672 | ctx->xbridge, ctx->xin->flow.in_port.ofp_port, warn, NULL); | |
1673 | if (xbundle) { | |
1674 | mirror_packet(ctx, xbundle, | |
1675 | xbundle_mirror_src(ctx->xbridge, xbundle)); | |
1676 | } | |
1677 | } | |
1678 | } | |
1679 | ||
9583bc14 | 1680 | /* Given 'vid', the VID obtained from the 802.1Q header that was received as |
46c88433 | 1681 | * part of a packet (specify 0 if there was no 802.1Q header), and 'in_xbundle', |
9583bc14 EJ |
1682 | * the bundle on which the packet was received, returns the VLAN to which the |
1683 | * packet belongs. | |
1684 | * | |
1685 | * Both 'vid' and the return value are in the range 0...4095. */ | |
1686 | static uint16_t | |
46c88433 | 1687 | input_vid_to_vlan(const struct xbundle *in_xbundle, uint16_t vid) |
9583bc14 | 1688 | { |
46c88433 | 1689 | switch (in_xbundle->vlan_mode) { |
9583bc14 | 1690 | case PORT_VLAN_ACCESS: |
46c88433 | 1691 | return in_xbundle->vlan; |
9583bc14 EJ |
1692 | break; |
1693 | ||
1694 | case PORT_VLAN_TRUNK: | |
1695 | return vid; | |
1696 | ||
1697 | case PORT_VLAN_NATIVE_UNTAGGED: | |
1698 | case PORT_VLAN_NATIVE_TAGGED: | |
46c88433 | 1699 | return vid ? vid : in_xbundle->vlan; |
9583bc14 EJ |
1700 | |
1701 | default: | |
428b2edd | 1702 | OVS_NOT_REACHED(); |
9583bc14 EJ |
1703 | } |
1704 | } | |
1705 | ||
46c88433 | 1706 | /* Checks whether a packet with the given 'vid' may ingress on 'in_xbundle'. |
9583bc14 EJ |
1707 | * If so, returns true. Otherwise, returns false and, if 'warn' is true, logs |
1708 | * a warning. | |
1709 | * | |
1710 | * 'vid' should be the VID obtained from the 802.1Q header that was received as | |
1711 | * part of a packet (specify 0 if there was no 802.1Q header), in the range | |
1712 | * 0...4095. */ | |
1713 | static bool | |
46c88433 | 1714 | input_vid_is_valid(uint16_t vid, struct xbundle *in_xbundle, bool warn) |
9583bc14 EJ |
1715 | { |
1716 | /* Allow any VID on the OFPP_NONE port. */ | |
46c88433 | 1717 | if (in_xbundle == &ofpp_none_bundle) { |
9583bc14 EJ |
1718 | return true; |
1719 | } | |
1720 | ||
46c88433 | 1721 | switch (in_xbundle->vlan_mode) { |
9583bc14 EJ |
1722 | case PORT_VLAN_ACCESS: |
1723 | if (vid) { | |
1724 | if (warn) { | |
1725 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
46c88433 | 1726 | VLOG_WARN_RL(&rl, "dropping VLAN %"PRIu16" tagged " |
9583bc14 | 1727 | "packet received on port %s configured as VLAN " |
46c88433 EJ |
1728 | "%"PRIu16" access port", vid, in_xbundle->name, |
1729 | in_xbundle->vlan); | |
9583bc14 EJ |
1730 | } |
1731 | return false; | |
1732 | } | |
1733 | return true; | |
1734 | ||
1735 | case PORT_VLAN_NATIVE_UNTAGGED: | |
1736 | case PORT_VLAN_NATIVE_TAGGED: | |
1737 | if (!vid) { | |
1738 | /* Port must always carry its native VLAN. */ | |
1739 | return true; | |
1740 | } | |
1741 | /* Fall through. */ | |
1742 | case PORT_VLAN_TRUNK: | |
46c88433 | 1743 | if (!xbundle_includes_vlan(in_xbundle, vid)) { |
9583bc14 EJ |
1744 | if (warn) { |
1745 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
46c88433 | 1746 | VLOG_WARN_RL(&rl, "dropping VLAN %"PRIu16" packet " |
9583bc14 | 1747 | "received on port %s not configured for trunking " |
46c88433 | 1748 | "VLAN %"PRIu16, vid, in_xbundle->name, vid); |
9583bc14 EJ |
1749 | } |
1750 | return false; | |
1751 | } | |
1752 | return true; | |
1753 | ||
1754 | default: | |
428b2edd | 1755 | OVS_NOT_REACHED(); |
9583bc14 EJ |
1756 | } |
1757 | ||
1758 | } | |
1759 | ||
1760 | /* Given 'vlan', the VLAN that a packet belongs to, and | |
46c88433 | 1761 | * 'out_xbundle', a bundle on which the packet is to be output, returns the VID |
9583bc14 EJ |
1762 | * that should be included in the 802.1Q header. (If the return value is 0, |
1763 | * then the 802.1Q header should only be included in the packet if there is a | |
1764 | * nonzero PCP.) | |
1765 | * | |
1766 | * Both 'vlan' and the return value are in the range 0...4095. */ | |
1767 | static uint16_t | |
46c88433 | 1768 | output_vlan_to_vid(const struct xbundle *out_xbundle, uint16_t vlan) |
9583bc14 | 1769 | { |
46c88433 | 1770 | switch (out_xbundle->vlan_mode) { |
9583bc14 EJ |
1771 | case PORT_VLAN_ACCESS: |
1772 | return 0; | |
1773 | ||
1774 | case PORT_VLAN_TRUNK: | |
1775 | case PORT_VLAN_NATIVE_TAGGED: | |
1776 | return vlan; | |
1777 | ||
1778 | case PORT_VLAN_NATIVE_UNTAGGED: | |
46c88433 | 1779 | return vlan == out_xbundle->vlan ? 0 : vlan; |
9583bc14 EJ |
1780 | |
1781 | default: | |
428b2edd | 1782 | OVS_NOT_REACHED(); |
9583bc14 EJ |
1783 | } |
1784 | } | |
1785 | ||
1786 | static void | |
46c88433 | 1787 | output_normal(struct xlate_ctx *ctx, const struct xbundle *out_xbundle, |
9583bc14 EJ |
1788 | uint16_t vlan) |
1789 | { | |
33bf9176 | 1790 | ovs_be16 *flow_tci = &ctx->xin->flow.vlan_tci; |
9583bc14 EJ |
1791 | uint16_t vid; |
1792 | ovs_be16 tci, old_tci; | |
46c88433 | 1793 | struct xport *xport; |
e93ef1c7 JR |
1794 | struct xlate_bond_recirc xr; |
1795 | bool use_recirc = false; | |
9583bc14 | 1796 | |
46c88433 EJ |
1797 | vid = output_vlan_to_vid(out_xbundle, vlan); |
1798 | if (list_is_empty(&out_xbundle->xports)) { | |
1799 | /* Partially configured bundle with no slaves. Drop the packet. */ | |
1800 | return; | |
1801 | } else if (!out_xbundle->bond) { | |
1802 | xport = CONTAINER_OF(list_front(&out_xbundle->xports), struct xport, | |
1803 | bundle_node); | |
9583bc14 | 1804 | } else { |
84f0f298 | 1805 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
49a73e0c | 1806 | struct flow_wildcards *wc = ctx->wc; |
84f0f298 | 1807 | struct ofport_dpif *ofport; |
adcf00ba | 1808 | |
2494ccd7 | 1809 | if (ctx->xbridge->support.odp.recirc) { |
e93ef1c7 JR |
1810 | use_recirc = bond_may_recirc( |
1811 | out_xbundle->bond, &xr.recirc_id, &xr.hash_basis); | |
adcf00ba | 1812 | |
e93ef1c7 | 1813 | if (use_recirc) { |
adcf00ba | 1814 | /* Only TCP mode uses recirculation. */ |
e93ef1c7 | 1815 | xr.hash_alg = OVS_HASH_ALG_L4; |
adcf00ba | 1816 | bond_update_post_recirc_rules(out_xbundle->bond, false); |
54ecb5a2 AZ |
1817 | |
1818 | /* Recirculation does not require unmasking hash fields. */ | |
1819 | wc = NULL; | |
adcf00ba AZ |
1820 | } |
1821 | } | |
46c88433 | 1822 | |
54ecb5a2 AZ |
1823 | ofport = bond_choose_output_slave(out_xbundle->bond, |
1824 | &ctx->xin->flow, wc, vid); | |
84f0f298 | 1825 | xport = xport_lookup(xcfg, ofport); |
46c88433 EJ |
1826 | |
1827 | if (!xport) { | |
9583bc14 EJ |
1828 | /* No slaves enabled, so drop packet. */ |
1829 | return; | |
1830 | } | |
d6fc5f57 | 1831 | |
e93ef1c7 | 1832 | /* If use_recirc is set, the main thread will handle stats |
b256dc52 | 1833 | * accounting for this bond. */ |
e93ef1c7 | 1834 | if (!use_recirc) { |
b256dc52 JS |
1835 | if (ctx->xin->resubmit_stats) { |
1836 | bond_account(out_xbundle->bond, &ctx->xin->flow, vid, | |
1837 | ctx->xin->resubmit_stats->n_bytes); | |
1838 | } | |
1839 | if (ctx->xin->xcache) { | |
1840 | struct xc_entry *entry; | |
1841 | struct flow *flow; | |
1842 | ||
1843 | flow = &ctx->xin->flow; | |
1844 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_BOND); | |
1845 | entry->u.bond.bond = bond_ref(out_xbundle->bond); | |
1846 | entry->u.bond.flow = xmemdup(flow, sizeof *flow); | |
1847 | entry->u.bond.vid = vid; | |
1848 | } | |
d6fc5f57 | 1849 | } |
9583bc14 EJ |
1850 | } |
1851 | ||
33bf9176 | 1852 | old_tci = *flow_tci; |
9583bc14 | 1853 | tci = htons(vid); |
46c88433 | 1854 | if (tci || out_xbundle->use_priority_tags) { |
33bf9176 | 1855 | tci |= *flow_tci & htons(VLAN_PCP_MASK); |
9583bc14 EJ |
1856 | if (tci) { |
1857 | tci |= htons(VLAN_CFI); | |
1858 | } | |
1859 | } | |
33bf9176 | 1860 | *flow_tci = tci; |
9583bc14 | 1861 | |
e93ef1c7 | 1862 | compose_output_action(ctx, xport->ofp_port, use_recirc ? &xr : NULL); |
33bf9176 | 1863 | *flow_tci = old_tci; |
9583bc14 EJ |
1864 | } |
1865 | ||
1866 | /* A VM broadcasts a gratuitous ARP to indicate that it has resumed after | |
1867 | * migration. Older Citrix-patched Linux DomU used gratuitous ARP replies to | |
1868 | * indicate this; newer upstream kernels use gratuitous ARP requests. */ | |
1869 | static bool | |
1870 | is_gratuitous_arp(const struct flow *flow, struct flow_wildcards *wc) | |
1871 | { | |
1872 | if (flow->dl_type != htons(ETH_TYPE_ARP)) { | |
1873 | return false; | |
1874 | } | |
1875 | ||
1876 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); | |
1877 | if (!eth_addr_is_broadcast(flow->dl_dst)) { | |
1878 | return false; | |
1879 | } | |
1880 | ||
1881 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); | |
1882 | if (flow->nw_proto == ARP_OP_REPLY) { | |
1883 | return true; | |
1884 | } else if (flow->nw_proto == ARP_OP_REQUEST) { | |
1885 | memset(&wc->masks.nw_src, 0xff, sizeof wc->masks.nw_src); | |
1886 | memset(&wc->masks.nw_dst, 0xff, sizeof wc->masks.nw_dst); | |
1887 | ||
1888 | return flow->nw_src == flow->nw_dst; | |
1889 | } else { | |
1890 | return false; | |
1891 | } | |
1892 | } | |
1893 | ||
ff69c24a FL |
1894 | /* Determines whether packets in 'flow' within 'xbridge' should be forwarded or |
1895 | * dropped. Returns true if they may be forwarded, false if they should be | |
1896 | * dropped. | |
1897 | * | |
1898 | * 'in_port' must be the xport that corresponds to flow->in_port. | |
1899 | * 'in_port' must be part of a bundle (e.g. in_port->bundle must be nonnull). | |
1900 | * | |
1901 | * 'vlan' must be the VLAN that corresponds to flow->vlan_tci on 'in_port', as | |
1902 | * returned by input_vid_to_vlan(). It must be a valid VLAN for 'in_port', as | |
1903 | * checked by input_vid_is_valid(). | |
1904 | * | |
1905 | * May also add tags to '*tags', although the current implementation only does | |
1906 | * so in one special case. | |
1907 | */ | |
1908 | static bool | |
1909 | is_admissible(struct xlate_ctx *ctx, struct xport *in_port, | |
1910 | uint16_t vlan) | |
1911 | { | |
1912 | struct xbundle *in_xbundle = in_port->xbundle; | |
1913 | const struct xbridge *xbridge = ctx->xbridge; | |
1914 | struct flow *flow = &ctx->xin->flow; | |
1915 | ||
1916 | /* Drop frames for reserved multicast addresses | |
1917 | * only if forward_bpdu option is absent. */ | |
1918 | if (!xbridge->forward_bpdu && eth_addr_is_reserved(flow->dl_dst)) { | |
1919 | xlate_report(ctx, "packet has reserved destination MAC, dropping"); | |
1920 | return false; | |
1921 | } | |
1922 | ||
1923 | if (in_xbundle->bond) { | |
1924 | struct mac_entry *mac; | |
1925 | ||
1926 | switch (bond_check_admissibility(in_xbundle->bond, in_port->ofport, | |
1927 | flow->dl_dst)) { | |
1928 | case BV_ACCEPT: | |
1929 | break; | |
1930 | ||
1931 | case BV_DROP: | |
1932 | xlate_report(ctx, "bonding refused admissibility, dropping"); | |
1933 | return false; | |
1934 | ||
1935 | case BV_DROP_IF_MOVED: | |
1936 | ovs_rwlock_rdlock(&xbridge->ml->rwlock); | |
1937 | mac = mac_learning_lookup(xbridge->ml, flow->dl_src, vlan); | |
9d078ec2 BP |
1938 | if (mac |
1939 | && mac_entry_get_port(xbridge->ml, mac) != in_xbundle->ofbundle | |
49a73e0c | 1940 | && (!is_gratuitous_arp(flow, ctx->wc) |
9d078ec2 | 1941 | || mac_entry_is_grat_arp_locked(mac))) { |
ff69c24a FL |
1942 | ovs_rwlock_unlock(&xbridge->ml->rwlock); |
1943 | xlate_report(ctx, "SLB bond thinks this packet looped back, " | |
1944 | "dropping"); | |
1945 | return false; | |
1946 | } | |
1947 | ovs_rwlock_unlock(&xbridge->ml->rwlock); | |
1948 | break; | |
1949 | } | |
1950 | } | |
1951 | ||
1952 | return true; | |
1953 | } | |
1954 | ||
ee047520 BP |
1955 | /* Checks whether a MAC learning update is necessary for MAC learning table |
1956 | * 'ml' given that a packet matching 'flow' was received on 'in_xbundle' in | |
1957 | * 'vlan'. | |
1958 | * | |
1959 | * Most packets processed through the MAC learning table do not actually | |
1960 | * change it in any way. This function requires only a read lock on the MAC | |
1961 | * learning table, so it is much cheaper in this common case. | |
1962 | * | |
1963 | * Keep the code here synchronized with that in update_learning_table__() | |
1964 | * below. */ | |
1965 | static bool | |
1966 | is_mac_learning_update_needed(const struct mac_learning *ml, | |
1967 | const struct flow *flow, | |
1968 | struct flow_wildcards *wc, | |
1969 | int vlan, struct xbundle *in_xbundle) | |
d6fc5f57 | 1970 | OVS_REQ_RDLOCK(ml->rwlock) |
9583bc14 EJ |
1971 | { |
1972 | struct mac_entry *mac; | |
1973 | ||
ee047520 BP |
1974 | if (!mac_learning_may_learn(ml, flow->dl_src, vlan)) { |
1975 | return false; | |
1976 | } | |
1977 | ||
1978 | mac = mac_learning_lookup(ml, flow->dl_src, vlan); | |
1979 | if (!mac || mac_entry_age(ml, mac)) { | |
1980 | return true; | |
9583bc14 EJ |
1981 | } |
1982 | ||
ee047520 BP |
1983 | if (is_gratuitous_arp(flow, wc)) { |
1984 | /* We don't want to learn from gratuitous ARP packets that are | |
1985 | * reflected back over bond slaves so we lock the learning table. */ | |
1986 | if (!in_xbundle->bond) { | |
1987 | return true; | |
1988 | } else if (mac_entry_is_grat_arp_locked(mac)) { | |
1989 | return false; | |
1990 | } | |
1991 | } | |
1992 | ||
9d078ec2 | 1993 | return mac_entry_get_port(ml, mac) != in_xbundle->ofbundle; |
ee047520 BP |
1994 | } |
1995 | ||
1996 | ||
1997 | /* Updates MAC learning table 'ml' given that a packet matching 'flow' was | |
1998 | * received on 'in_xbundle' in 'vlan'. | |
1999 | * | |
2000 | * This code repeats all the checks in is_mac_learning_update_needed() because | |
2001 | * the lock was released between there and here and thus the MAC learning state | |
2002 | * could have changed. | |
2003 | * | |
2004 | * Keep the code here synchronized with that in is_mac_learning_update_needed() | |
2005 | * above. */ | |
2006 | static void | |
2007 | update_learning_table__(const struct xbridge *xbridge, | |
2008 | const struct flow *flow, struct flow_wildcards *wc, | |
2009 | int vlan, struct xbundle *in_xbundle) | |
d6fc5f57 | 2010 | OVS_REQ_WRLOCK(xbridge->ml->rwlock) |
ee047520 BP |
2011 | { |
2012 | struct mac_entry *mac; | |
2013 | ||
46c88433 | 2014 | if (!mac_learning_may_learn(xbridge->ml, flow->dl_src, vlan)) { |
ee047520 | 2015 | return; |
9583bc14 EJ |
2016 | } |
2017 | ||
46c88433 | 2018 | mac = mac_learning_insert(xbridge->ml, flow->dl_src, vlan); |
9583bc14 EJ |
2019 | if (is_gratuitous_arp(flow, wc)) { |
2020 | /* We don't want to learn from gratuitous ARP packets that are | |
2021 | * reflected back over bond slaves so we lock the learning table. */ | |
46c88433 | 2022 | if (!in_xbundle->bond) { |
9583bc14 EJ |
2023 | mac_entry_set_grat_arp_lock(mac); |
2024 | } else if (mac_entry_is_grat_arp_locked(mac)) { | |
ee047520 | 2025 | return; |
9583bc14 EJ |
2026 | } |
2027 | } | |
2028 | ||
9d078ec2 | 2029 | if (mac_entry_get_port(xbridge->ml, mac) != in_xbundle->ofbundle) { |
9583bc14 EJ |
2030 | /* The log messages here could actually be useful in debugging, |
2031 | * so keep the rate limit relatively high. */ | |
2032 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(30, 300); | |
ee047520 | 2033 | |
9583bc14 EJ |
2034 | VLOG_DBG_RL(&rl, "bridge %s: learned that "ETH_ADDR_FMT" is " |
2035 | "on port %s in VLAN %d", | |
46c88433 EJ |
2036 | xbridge->name, ETH_ADDR_ARGS(flow->dl_src), |
2037 | in_xbundle->name, vlan); | |
9583bc14 | 2038 | |
9d078ec2 | 2039 | mac_entry_set_port(xbridge->ml, mac, in_xbundle->ofbundle); |
9583bc14 | 2040 | } |
ee047520 BP |
2041 | } |
2042 | ||
2043 | static void | |
2044 | update_learning_table(const struct xbridge *xbridge, | |
2045 | const struct flow *flow, struct flow_wildcards *wc, | |
2046 | int vlan, struct xbundle *in_xbundle) | |
2047 | { | |
2048 | bool need_update; | |
2049 | ||
2050 | /* Don't learn the OFPP_NONE port. */ | |
2051 | if (in_xbundle == &ofpp_none_bundle) { | |
2052 | return; | |
2053 | } | |
2054 | ||
2055 | /* First try the common case: no change to MAC learning table. */ | |
2056 | ovs_rwlock_rdlock(&xbridge->ml->rwlock); | |
2057 | need_update = is_mac_learning_update_needed(xbridge->ml, flow, wc, vlan, | |
2058 | in_xbundle); | |
509c0149 | 2059 | ovs_rwlock_unlock(&xbridge->ml->rwlock); |
ee047520 BP |
2060 | |
2061 | if (need_update) { | |
2062 | /* Slow path: MAC learning table might need an update. */ | |
2063 | ovs_rwlock_wrlock(&xbridge->ml->rwlock); | |
2064 | update_learning_table__(xbridge, flow, wc, vlan, in_xbundle); | |
2065 | ovs_rwlock_unlock(&xbridge->ml->rwlock); | |
2066 | } | |
9583bc14 EJ |
2067 | } |
2068 | ||
86e2dcdd FL |
2069 | /* Updates multicast snooping table 'ms' given that a packet matching 'flow' |
2070 | * was received on 'in_xbundle' in 'vlan' and is either Report or Query. */ | |
2071 | static void | |
06994f87 TLSC |
2072 | update_mcast_snooping_table4__(const struct xbridge *xbridge, |
2073 | const struct flow *flow, | |
2074 | struct mcast_snooping *ms, int vlan, | |
2075 | struct xbundle *in_xbundle, | |
2076 | const struct dp_packet *packet) | |
86e2dcdd FL |
2077 | OVS_REQ_WRLOCK(ms->rwlock) |
2078 | { | |
2079 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(60, 30); | |
e3102e42 | 2080 | int count; |
06994f87 | 2081 | ovs_be32 ip4 = flow->igmp_group_ip4; |
86e2dcdd FL |
2082 | |
2083 | switch (ntohs(flow->tp_src)) { | |
2084 | case IGMP_HOST_MEMBERSHIP_REPORT: | |
2085 | case IGMPV2_HOST_MEMBERSHIP_REPORT: | |
964a4d5f | 2086 | if (mcast_snooping_add_group4(ms, ip4, vlan, in_xbundle->ofbundle)) { |
86e2dcdd FL |
2087 | VLOG_DBG_RL(&rl, "bridge %s: multicast snooping learned that " |
2088 | IP_FMT" is on port %s in VLAN %d", | |
2089 | xbridge->name, IP_ARGS(ip4), in_xbundle->name, vlan); | |
2090 | } | |
2091 | break; | |
2092 | case IGMP_HOST_LEAVE_MESSAGE: | |
964a4d5f | 2093 | if (mcast_snooping_leave_group4(ms, ip4, vlan, in_xbundle->ofbundle)) { |
86e2dcdd FL |
2094 | VLOG_DBG_RL(&rl, "bridge %s: multicast snooping leaving " |
2095 | IP_FMT" is on port %s in VLAN %d", | |
2096 | xbridge->name, IP_ARGS(ip4), in_xbundle->name, vlan); | |
2097 | } | |
2098 | break; | |
2099 | case IGMP_HOST_MEMBERSHIP_QUERY: | |
2100 | if (flow->nw_src && mcast_snooping_add_mrouter(ms, vlan, | |
2101 | in_xbundle->ofbundle)) { | |
2102 | VLOG_DBG_RL(&rl, "bridge %s: multicast snooping query from " | |
2103 | IP_FMT" is on port %s in VLAN %d", | |
2104 | xbridge->name, IP_ARGS(flow->nw_src), | |
2105 | in_xbundle->name, vlan); | |
2106 | } | |
2107 | break; | |
e3102e42 TLSC |
2108 | case IGMPV3_HOST_MEMBERSHIP_REPORT: |
2109 | if ((count = mcast_snooping_add_report(ms, packet, vlan, | |
2110 | in_xbundle->ofbundle))) { | |
2111 | VLOG_DBG_RL(&rl, "bridge %s: multicast snooping processed %d " | |
2112 | "addresses on port %s in VLAN %d", | |
2113 | xbridge->name, count, in_xbundle->name, vlan); | |
2114 | } | |
2115 | break; | |
86e2dcdd FL |
2116 | } |
2117 | } | |
2118 | ||
06994f87 TLSC |
2119 | static void |
2120 | update_mcast_snooping_table6__(const struct xbridge *xbridge, | |
2121 | const struct flow *flow, | |
2122 | struct mcast_snooping *ms, int vlan, | |
2123 | struct xbundle *in_xbundle, | |
2124 | const struct dp_packet *packet) | |
2125 | OVS_REQ_WRLOCK(ms->rwlock) | |
2126 | { | |
2127 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(60, 30); | |
2128 | int count; | |
2129 | ||
2130 | switch (ntohs(flow->tp_src)) { | |
2131 | case MLD_QUERY: | |
2132 | if (!ipv6_addr_equals(&flow->ipv6_src, &in6addr_any) | |
2133 | && mcast_snooping_add_mrouter(ms, vlan, in_xbundle->ofbundle)) { | |
2134 | VLOG_DBG_RL(&rl, "bridge %s: multicast snooping query on port %s" | |
2135 | "in VLAN %d", | |
2136 | xbridge->name, in_xbundle->name, vlan); | |
2137 | } | |
2138 | break; | |
2139 | case MLD_REPORT: | |
2140 | case MLD_DONE: | |
2141 | case MLD2_REPORT: | |
2142 | count = mcast_snooping_add_mld(ms, packet, vlan, in_xbundle->ofbundle); | |
2143 | if (count) { | |
2144 | VLOG_DBG_RL(&rl, "bridge %s: multicast snooping processed %d " | |
2145 | "addresses on port %s in VLAN %d", | |
2146 | xbridge->name, count, in_xbundle->name, vlan); | |
2147 | } | |
2148 | break; | |
2149 | } | |
2150 | } | |
2151 | ||
86e2dcdd FL |
2152 | /* Updates multicast snooping table 'ms' given that a packet matching 'flow' |
2153 | * was received on 'in_xbundle' in 'vlan'. */ | |
2154 | static void | |
2155 | update_mcast_snooping_table(const struct xbridge *xbridge, | |
2156 | const struct flow *flow, int vlan, | |
e3102e42 TLSC |
2157 | struct xbundle *in_xbundle, |
2158 | const struct dp_packet *packet) | |
86e2dcdd FL |
2159 | { |
2160 | struct mcast_snooping *ms = xbridge->ms; | |
2161 | struct xlate_cfg *xcfg; | |
2162 | struct xbundle *mcast_xbundle; | |
f4ae6e23 | 2163 | struct mcast_port_bundle *fport; |
86e2dcdd FL |
2164 | |
2165 | /* Don't learn the OFPP_NONE port. */ | |
2166 | if (in_xbundle == &ofpp_none_bundle) { | |
2167 | return; | |
2168 | } | |
2169 | ||
2170 | /* Don't learn from flood ports */ | |
2171 | mcast_xbundle = NULL; | |
2172 | ovs_rwlock_wrlock(&ms->rwlock); | |
2173 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
f4ae6e23 | 2174 | LIST_FOR_EACH(fport, node, &ms->fport_list) { |
86e2dcdd FL |
2175 | mcast_xbundle = xbundle_lookup(xcfg, fport->port); |
2176 | if (mcast_xbundle == in_xbundle) { | |
2177 | break; | |
2178 | } | |
2179 | } | |
2180 | ||
2181 | if (!mcast_xbundle || mcast_xbundle != in_xbundle) { | |
06994f87 TLSC |
2182 | if (flow->dl_type == htons(ETH_TYPE_IP)) { |
2183 | update_mcast_snooping_table4__(xbridge, flow, ms, vlan, | |
2184 | in_xbundle, packet); | |
2185 | } else { | |
2186 | update_mcast_snooping_table6__(xbridge, flow, ms, vlan, | |
2187 | in_xbundle, packet); | |
2188 | } | |
86e2dcdd FL |
2189 | } |
2190 | ovs_rwlock_unlock(&ms->rwlock); | |
2191 | } | |
2192 | ||
2193 | /* send the packet to ports having the multicast group learned */ | |
2194 | static void | |
2195 | xlate_normal_mcast_send_group(struct xlate_ctx *ctx, | |
2196 | struct mcast_snooping *ms OVS_UNUSED, | |
2197 | struct mcast_group *grp, | |
2198 | struct xbundle *in_xbundle, uint16_t vlan) | |
2199 | OVS_REQ_RDLOCK(ms->rwlock) | |
2200 | { | |
2201 | struct xlate_cfg *xcfg; | |
2202 | struct mcast_group_bundle *b; | |
2203 | struct xbundle *mcast_xbundle; | |
2204 | ||
2205 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
2206 | LIST_FOR_EACH(b, bundle_node, &grp->bundle_lru) { | |
2207 | mcast_xbundle = xbundle_lookup(xcfg, b->port); | |
2208 | if (mcast_xbundle && mcast_xbundle != in_xbundle) { | |
2209 | xlate_report(ctx, "forwarding to mcast group port"); | |
2210 | output_normal(ctx, mcast_xbundle, vlan); | |
2211 | } else if (!mcast_xbundle) { | |
2212 | xlate_report(ctx, "mcast group port is unknown, dropping"); | |
2213 | } else { | |
2214 | xlate_report(ctx, "mcast group port is input port, dropping"); | |
2215 | } | |
2216 | } | |
2217 | } | |
2218 | ||
2219 | /* send the packet to ports connected to multicast routers */ | |
2220 | static void | |
2221 | xlate_normal_mcast_send_mrouters(struct xlate_ctx *ctx, | |
2222 | struct mcast_snooping *ms, | |
2223 | struct xbundle *in_xbundle, uint16_t vlan) | |
2224 | OVS_REQ_RDLOCK(ms->rwlock) | |
2225 | { | |
2226 | struct xlate_cfg *xcfg; | |
2227 | struct mcast_mrouter_bundle *mrouter; | |
2228 | struct xbundle *mcast_xbundle; | |
2229 | ||
2230 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
2231 | LIST_FOR_EACH(mrouter, mrouter_node, &ms->mrouter_lru) { | |
2232 | mcast_xbundle = xbundle_lookup(xcfg, mrouter->port); | |
2233 | if (mcast_xbundle && mcast_xbundle != in_xbundle) { | |
2234 | xlate_report(ctx, "forwarding to mcast router port"); | |
2235 | output_normal(ctx, mcast_xbundle, vlan); | |
2236 | } else if (!mcast_xbundle) { | |
2237 | xlate_report(ctx, "mcast router port is unknown, dropping"); | |
2238 | } else { | |
2239 | xlate_report(ctx, "mcast router port is input port, dropping"); | |
2240 | } | |
2241 | } | |
2242 | } | |
2243 | ||
2244 | /* send the packet to ports flagged to be flooded */ | |
2245 | static void | |
2246 | xlate_normal_mcast_send_fports(struct xlate_ctx *ctx, | |
2247 | struct mcast_snooping *ms, | |
2248 | struct xbundle *in_xbundle, uint16_t vlan) | |
2249 | OVS_REQ_RDLOCK(ms->rwlock) | |
2250 | { | |
2251 | struct xlate_cfg *xcfg; | |
f4ae6e23 | 2252 | struct mcast_port_bundle *fport; |
86e2dcdd FL |
2253 | struct xbundle *mcast_xbundle; |
2254 | ||
2255 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
f4ae6e23 | 2256 | LIST_FOR_EACH(fport, node, &ms->fport_list) { |
86e2dcdd FL |
2257 | mcast_xbundle = xbundle_lookup(xcfg, fport->port); |
2258 | if (mcast_xbundle && mcast_xbundle != in_xbundle) { | |
2259 | xlate_report(ctx, "forwarding to mcast flood port"); | |
2260 | output_normal(ctx, mcast_xbundle, vlan); | |
2261 | } else if (!mcast_xbundle) { | |
2262 | xlate_report(ctx, "mcast flood port is unknown, dropping"); | |
2263 | } else { | |
2264 | xlate_report(ctx, "mcast flood port is input port, dropping"); | |
2265 | } | |
2266 | } | |
2267 | } | |
2268 | ||
8e04a33f FL |
2269 | /* forward the Reports to configured ports */ |
2270 | static void | |
2271 | xlate_normal_mcast_send_rports(struct xlate_ctx *ctx, | |
2272 | struct mcast_snooping *ms, | |
2273 | struct xbundle *in_xbundle, uint16_t vlan) | |
2274 | OVS_REQ_RDLOCK(ms->rwlock) | |
2275 | { | |
2276 | struct xlate_cfg *xcfg; | |
2277 | struct mcast_port_bundle *rport; | |
2278 | struct xbundle *mcast_xbundle; | |
2279 | ||
2280 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
2281 | LIST_FOR_EACH(rport, node, &ms->rport_list) { | |
2282 | mcast_xbundle = xbundle_lookup(xcfg, rport->port); | |
2283 | if (mcast_xbundle && mcast_xbundle != in_xbundle) { | |
2284 | xlate_report(ctx, "forwarding Report to mcast flagged port"); | |
2285 | output_normal(ctx, mcast_xbundle, vlan); | |
2286 | } else if (!mcast_xbundle) { | |
2287 | xlate_report(ctx, "mcast port is unknown, dropping the Report"); | |
2288 | } else { | |
2289 | xlate_report(ctx, "mcast port is input port, dropping the Report"); | |
2290 | } | |
2291 | } | |
2292 | } | |
2293 | ||
682800a4 FL |
2294 | static void |
2295 | xlate_normal_flood(struct xlate_ctx *ctx, struct xbundle *in_xbundle, | |
2296 | uint16_t vlan) | |
2297 | { | |
2298 | struct xbundle *xbundle; | |
2299 | ||
2300 | LIST_FOR_EACH (xbundle, list_node, &ctx->xbridge->xbundles) { | |
2301 | if (xbundle != in_xbundle | |
2302 | && xbundle_includes_vlan(xbundle, vlan) | |
2303 | && xbundle->floodable | |
2304 | && !xbundle_mirror_out(ctx->xbridge, xbundle)) { | |
2305 | output_normal(ctx, xbundle, vlan); | |
2306 | } | |
2307 | } | |
2031ef97 | 2308 | ctx->nf_output_iface = NF_OUT_FLOOD; |
682800a4 FL |
2309 | } |
2310 | ||
9583bc14 EJ |
2311 | static void |
2312 | xlate_normal(struct xlate_ctx *ctx) | |
2313 | { | |
49a73e0c | 2314 | struct flow_wildcards *wc = ctx->wc; |
33bf9176 | 2315 | struct flow *flow = &ctx->xin->flow; |
46c88433 EJ |
2316 | struct xbundle *in_xbundle; |
2317 | struct xport *in_port; | |
9583bc14 | 2318 | struct mac_entry *mac; |
d6d5bbc9 | 2319 | void *mac_port; |
9583bc14 EJ |
2320 | uint16_t vlan; |
2321 | uint16_t vid; | |
2322 | ||
33bf9176 BP |
2323 | memset(&wc->masks.dl_src, 0xff, sizeof wc->masks.dl_src); |
2324 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); | |
1dd35f8a | 2325 | wc->masks.vlan_tci |= htons(VLAN_VID_MASK | VLAN_CFI); |
9583bc14 | 2326 | |
46c88433 EJ |
2327 | in_xbundle = lookup_input_bundle(ctx->xbridge, flow->in_port.ofp_port, |
2328 | ctx->xin->packet != NULL, &in_port); | |
2329 | if (!in_xbundle) { | |
9583bc14 EJ |
2330 | xlate_report(ctx, "no input bundle, dropping"); |
2331 | return; | |
2332 | } | |
2333 | ||
2334 | /* Drop malformed frames. */ | |
33bf9176 BP |
2335 | if (flow->dl_type == htons(ETH_TYPE_VLAN) && |
2336 | !(flow->vlan_tci & htons(VLAN_CFI))) { | |
9583bc14 EJ |
2337 | if (ctx->xin->packet != NULL) { |
2338 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
2339 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet with partial " | |
2340 | "VLAN tag received on port %s", | |
46c88433 | 2341 | ctx->xbridge->name, in_xbundle->name); |
9583bc14 EJ |
2342 | } |
2343 | xlate_report(ctx, "partial VLAN tag, dropping"); | |
2344 | return; | |
2345 | } | |
2346 | ||
2347 | /* Drop frames on bundles reserved for mirroring. */ | |
46c88433 | 2348 | if (xbundle_mirror_out(ctx->xbridge, in_xbundle)) { |
9583bc14 EJ |
2349 | if (ctx->xin->packet != NULL) { |
2350 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
2351 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet received on port " | |
2352 | "%s, which is reserved exclusively for mirroring", | |
46c88433 | 2353 | ctx->xbridge->name, in_xbundle->name); |
9583bc14 EJ |
2354 | } |
2355 | xlate_report(ctx, "input port is mirror output port, dropping"); | |
2356 | return; | |
2357 | } | |
2358 | ||
2359 | /* Check VLAN. */ | |
33bf9176 | 2360 | vid = vlan_tci_to_vid(flow->vlan_tci); |
46c88433 | 2361 | if (!input_vid_is_valid(vid, in_xbundle, ctx->xin->packet != NULL)) { |
9583bc14 EJ |
2362 | xlate_report(ctx, "disallowed VLAN VID for this input port, dropping"); |
2363 | return; | |
2364 | } | |
46c88433 | 2365 | vlan = input_vid_to_vlan(in_xbundle, vid); |
9583bc14 EJ |
2366 | |
2367 | /* Check other admissibility requirements. */ | |
2368 | if (in_port && !is_admissible(ctx, in_port, vlan)) { | |
2369 | return; | |
2370 | } | |
2371 | ||
2372 | /* Learn source MAC. */ | |
2373 | if (ctx->xin->may_learn) { | |
46c88433 | 2374 | update_learning_table(ctx->xbridge, flow, wc, vlan, in_xbundle); |
9583bc14 | 2375 | } |
b256dc52 JS |
2376 | if (ctx->xin->xcache) { |
2377 | struct xc_entry *entry; | |
2378 | ||
2379 | /* Save enough info to update mac learning table later. */ | |
2380 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_NORMAL); | |
9edf6b48 | 2381 | entry->u.normal.ofproto = ctx->xbridge->ofproto; |
b256dc52 JS |
2382 | entry->u.normal.flow = xmemdup(flow, sizeof *flow); |
2383 | entry->u.normal.vlan = vlan; | |
2384 | } | |
9583bc14 EJ |
2385 | |
2386 | /* Determine output bundle. */ | |
86e2dcdd FL |
2387 | if (mcast_snooping_enabled(ctx->xbridge->ms) |
2388 | && !eth_addr_is_broadcast(flow->dl_dst) | |
2389 | && eth_addr_is_multicast(flow->dl_dst) | |
06994f87 | 2390 | && is_ip_any(flow)) { |
86e2dcdd | 2391 | struct mcast_snooping *ms = ctx->xbridge->ms; |
06994f87 | 2392 | struct mcast_group *grp = NULL; |
86e2dcdd | 2393 | |
06994f87 | 2394 | if (is_igmp(flow)) { |
d29f137b TLSC |
2395 | if (mcast_snooping_is_membership(flow->tp_src) || |
2396 | mcast_snooping_is_query(flow->tp_src)) { | |
2397 | if (ctx->xin->may_learn) { | |
86e2dcdd | 2398 | update_mcast_snooping_table(ctx->xbridge, flow, vlan, |
e3102e42 | 2399 | in_xbundle, ctx->xin->packet); |
d29f137b TLSC |
2400 | } |
2401 | /* | |
2402 | * IGMP packets need to take the slow path, in order to be | |
2403 | * processed for mdb updates. That will prevent expires | |
2404 | * firing off even after hosts have sent reports. | |
2405 | */ | |
2406 | ctx->xout->slow |= SLOW_ACTION; | |
86e2dcdd | 2407 | } |
d6d5bbc9 | 2408 | |
86e2dcdd FL |
2409 | if (mcast_snooping_is_membership(flow->tp_src)) { |
2410 | ovs_rwlock_rdlock(&ms->rwlock); | |
2411 | xlate_normal_mcast_send_mrouters(ctx, ms, in_xbundle, vlan); | |
8e04a33f FL |
2412 | /* RFC4541: section 2.1.1, item 1: A snooping switch should |
2413 | * forward IGMP Membership Reports only to those ports where | |
2414 | * multicast routers are attached. Alternatively stated: a | |
2415 | * snooping switch should not forward IGMP Membership Reports | |
2416 | * to ports on which only hosts are attached. | |
2417 | * An administrative control may be provided to override this | |
2418 | * restriction, allowing the report messages to be flooded to | |
2419 | * other ports. */ | |
2420 | xlate_normal_mcast_send_rports(ctx, ms, in_xbundle, vlan); | |
86e2dcdd FL |
2421 | ovs_rwlock_unlock(&ms->rwlock); |
2422 | } else { | |
2423 | xlate_report(ctx, "multicast traffic, flooding"); | |
2424 | xlate_normal_flood(ctx, in_xbundle, vlan); | |
2425 | } | |
2426 | return; | |
06994f87 TLSC |
2427 | } else if (is_mld(flow)) { |
2428 | ctx->xout->slow |= SLOW_ACTION; | |
2429 | if (ctx->xin->may_learn) { | |
2430 | update_mcast_snooping_table(ctx->xbridge, flow, vlan, | |
2431 | in_xbundle, ctx->xin->packet); | |
2432 | } | |
2433 | if (is_mld_report(flow)) { | |
2434 | ovs_rwlock_rdlock(&ms->rwlock); | |
2435 | xlate_normal_mcast_send_mrouters(ctx, ms, in_xbundle, vlan); | |
2436 | xlate_normal_mcast_send_rports(ctx, ms, in_xbundle, vlan); | |
2437 | ovs_rwlock_unlock(&ms->rwlock); | |
2438 | } else { | |
2439 | xlate_report(ctx, "MLD query, flooding"); | |
2440 | xlate_normal_flood(ctx, in_xbundle, vlan); | |
2441 | } | |
86e2dcdd | 2442 | } else { |
06994f87 TLSC |
2443 | if ((flow->dl_type == htons(ETH_TYPE_IP) |
2444 | && ip_is_local_multicast(flow->nw_dst)) | |
2445 | || (flow->dl_type == htons(ETH_TYPE_IPV6) | |
2446 | && ipv6_is_all_hosts(&flow->ipv6_dst))) { | |
86e2dcdd FL |
2447 | /* RFC4541: section 2.1.2, item 2: Packets with a dst IP |
2448 | * address in the 224.0.0.x range which are not IGMP must | |
2449 | * be forwarded on all ports */ | |
2450 | xlate_report(ctx, "RFC4541: section 2.1.2, item 2, flooding"); | |
2451 | xlate_normal_flood(ctx, in_xbundle, vlan); | |
2452 | return; | |
2453 | } | |
2454 | } | |
2455 | ||
2456 | /* forwarding to group base ports */ | |
2457 | ovs_rwlock_rdlock(&ms->rwlock); | |
06994f87 TLSC |
2458 | if (flow->dl_type == htons(ETH_TYPE_IP)) { |
2459 | grp = mcast_snooping_lookup4(ms, flow->nw_dst, vlan); | |
2460 | } else if (flow->dl_type == htons(ETH_TYPE_IPV6)) { | |
2461 | grp = mcast_snooping_lookup(ms, &flow->ipv6_dst, vlan); | |
2462 | } | |
86e2dcdd FL |
2463 | if (grp) { |
2464 | xlate_normal_mcast_send_group(ctx, ms, grp, in_xbundle, vlan); | |
2465 | xlate_normal_mcast_send_fports(ctx, ms, in_xbundle, vlan); | |
2466 | xlate_normal_mcast_send_mrouters(ctx, ms, in_xbundle, vlan); | |
9583bc14 | 2467 | } else { |
86e2dcdd FL |
2468 | if (mcast_snooping_flood_unreg(ms)) { |
2469 | xlate_report(ctx, "unregistered multicast, flooding"); | |
2470 | xlate_normal_flood(ctx, in_xbundle, vlan); | |
2471 | } else { | |
2472 | xlate_normal_mcast_send_mrouters(ctx, ms, in_xbundle, vlan); | |
2473 | xlate_normal_mcast_send_fports(ctx, ms, in_xbundle, vlan); | |
2474 | } | |
9583bc14 | 2475 | } |
86e2dcdd | 2476 | ovs_rwlock_unlock(&ms->rwlock); |
9583bc14 | 2477 | } else { |
86e2dcdd FL |
2478 | ovs_rwlock_rdlock(&ctx->xbridge->ml->rwlock); |
2479 | mac = mac_learning_lookup(ctx->xbridge->ml, flow->dl_dst, vlan); | |
9d078ec2 | 2480 | mac_port = mac ? mac_entry_get_port(ctx->xbridge->ml, mac) : NULL; |
86e2dcdd FL |
2481 | ovs_rwlock_unlock(&ctx->xbridge->ml->rwlock); |
2482 | ||
2483 | if (mac_port) { | |
2484 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
2485 | struct xbundle *mac_xbundle = xbundle_lookup(xcfg, mac_port); | |
2486 | if (mac_xbundle && mac_xbundle != in_xbundle) { | |
2487 | xlate_report(ctx, "forwarding to learned port"); | |
2488 | output_normal(ctx, mac_xbundle, vlan); | |
2489 | } else if (!mac_xbundle) { | |
2490 | xlate_report(ctx, "learned port is unknown, dropping"); | |
2491 | } else { | |
2492 | xlate_report(ctx, "learned port is input port, dropping"); | |
2493 | } | |
2494 | } else { | |
2495 | xlate_report(ctx, "no learned MAC for destination, flooding"); | |
2496 | xlate_normal_flood(ctx, in_xbundle, vlan); | |
2497 | } | |
9583bc14 EJ |
2498 | } |
2499 | } | |
2500 | ||
a6092018 BP |
2501 | /* Appends a "sample" action for sFlow or IPFIX to 'ctx->odp_actions'. The |
2502 | * 'probability' is the number of packets out of UINT32_MAX to sample. The | |
2503 | * 'cookie' (of length 'cookie_size' bytes) is passed back in the callback for | |
2504 | * each sampled packet. 'tunnel_out_port', if not ODPP_NONE, is added as the | |
2505 | * OVS_USERSPACE_ATTR_EGRESS_TUN_PORT attribute. If 'include_actions', an | |
2506 | * OVS_USERSPACE_ATTR_ACTIONS attribute is added. | |
9583bc14 EJ |
2507 | */ |
2508 | static size_t | |
a6092018 | 2509 | compose_sample_action(struct xlate_ctx *ctx, |
9583bc14 EJ |
2510 | const uint32_t probability, |
2511 | const union user_action_cookie *cookie, | |
8b7ea2d4 | 2512 | const size_t cookie_size, |
7321bda3 NM |
2513 | const odp_port_t tunnel_out_port, |
2514 | bool include_actions) | |
9583bc14 | 2515 | { |
a6092018 BP |
2516 | size_t sample_offset = nl_msg_start_nested(ctx->odp_actions, |
2517 | OVS_ACTION_ATTR_SAMPLE); | |
9583bc14 | 2518 | |
a6092018 | 2519 | nl_msg_put_u32(ctx->odp_actions, OVS_SAMPLE_ATTR_PROBABILITY, probability); |
9583bc14 | 2520 | |
a6092018 BP |
2521 | size_t actions_offset = nl_msg_start_nested(ctx->odp_actions, |
2522 | OVS_SAMPLE_ATTR_ACTIONS); | |
9583bc14 | 2523 | |
a6092018 BP |
2524 | odp_port_t odp_port = ofp_port_to_odp_port( |
2525 | ctx->xbridge, ctx->xin->flow.in_port.ofp_port); | |
2526 | uint32_t pid = dpif_port_get_pid(ctx->xbridge->dpif, odp_port, | |
2527 | flow_hash_5tuple(&ctx->xin->flow, 0)); | |
2528 | int cookie_offset = odp_put_userspace_action(pid, cookie, cookie_size, | |
2529 | tunnel_out_port, | |
2530 | include_actions, | |
2531 | ctx->odp_actions); | |
89a8a7f0 | 2532 | |
a6092018 BP |
2533 | nl_msg_end_nested(ctx->odp_actions, actions_offset); |
2534 | nl_msg_end_nested(ctx->odp_actions, sample_offset); | |
9583bc14 | 2535 | |
9583bc14 EJ |
2536 | return cookie_offset; |
2537 | } | |
2538 | ||
a6092018 BP |
2539 | /* If sFLow is not enabled, returns 0 without doing anything. |
2540 | * | |
2541 | * If sFlow is enabled, appends a template "sample" action to the ODP actions | |
2542 | * in 'ctx'. This action is a template because some of the information needed | |
2543 | * to fill it out is not available until flow translation is complete. In this | |
2544 | * case, this functions returns an offset, which is always nonzero, to pass | |
2545 | * later to fix_sflow_action() to fill in the rest of the template. */ | |
9583bc14 | 2546 | static size_t |
a6092018 | 2547 | compose_sflow_action(struct xlate_ctx *ctx) |
9583bc14 | 2548 | { |
a6092018 BP |
2549 | struct dpif_sflow *sflow = ctx->xbridge->sflow; |
2550 | if (!sflow || ctx->xin->flow.in_port.ofp_port == OFPP_NONE) { | |
9583bc14 EJ |
2551 | return 0; |
2552 | } | |
2553 | ||
a6092018 BP |
2554 | union user_action_cookie cookie = { .type = USER_ACTION_COOKIE_SFLOW }; |
2555 | return compose_sample_action(ctx, dpif_sflow_get_probability(sflow), | |
7321bda3 NM |
2556 | &cookie, sizeof cookie.sflow, ODPP_NONE, |
2557 | true); | |
9583bc14 EJ |
2558 | } |
2559 | ||
a6092018 BP |
2560 | /* If IPFIX is enabled, this appends a "sample" action to implement IPFIX to |
2561 | * 'ctx->odp_actions'. */ | |
9583bc14 | 2562 | static void |
a6092018 | 2563 | compose_ipfix_action(struct xlate_ctx *ctx, odp_port_t output_odp_port) |
9583bc14 | 2564 | { |
a6092018 | 2565 | struct dpif_ipfix *ipfix = ctx->xbridge->ipfix; |
8b7ea2d4 | 2566 | odp_port_t tunnel_out_port = ODPP_NONE; |
9583bc14 | 2567 | |
a6092018 | 2568 | if (!ipfix || ctx->xin->flow.in_port.ofp_port == OFPP_NONE) { |
9583bc14 EJ |
2569 | return; |
2570 | } | |
2571 | ||
8b7ea2d4 WZ |
2572 | /* For input case, output_odp_port is ODPP_NONE, which is an invalid port |
2573 | * number. */ | |
2574 | if (output_odp_port == ODPP_NONE && | |
a6092018 | 2575 | !dpif_ipfix_get_bridge_exporter_input_sampling(ipfix)) { |
8b7ea2d4 WZ |
2576 | return; |
2577 | } | |
2578 | ||
2579 | /* For output case, output_odp_port is valid*/ | |
2580 | if (output_odp_port != ODPP_NONE) { | |
a6092018 | 2581 | if (!dpif_ipfix_get_bridge_exporter_output_sampling(ipfix)) { |
8b7ea2d4 WZ |
2582 | return; |
2583 | } | |
2584 | /* If tunnel sampling is enabled, put an additional option attribute: | |
2585 | * OVS_USERSPACE_ATTR_TUNNEL_OUT_PORT | |
2586 | */ | |
a6092018 BP |
2587 | if (dpif_ipfix_get_bridge_exporter_tunnel_sampling(ipfix) && |
2588 | dpif_ipfix_get_tunnel_port(ipfix, output_odp_port) ) { | |
8b7ea2d4 WZ |
2589 | tunnel_out_port = output_odp_port; |
2590 | } | |
2591 | } | |
2592 | ||
a6092018 BP |
2593 | union user_action_cookie cookie = { |
2594 | .ipfix = { | |
2595 | .type = USER_ACTION_COOKIE_IPFIX, | |
2596 | .output_odp_port = output_odp_port, | |
2597 | } | |
2598 | }; | |
2599 | compose_sample_action(ctx, | |
2600 | dpif_ipfix_get_bridge_exporter_probability(ipfix), | |
7321bda3 NM |
2601 | &cookie, sizeof cookie.ipfix, tunnel_out_port, |
2602 | false); | |
9583bc14 EJ |
2603 | } |
2604 | ||
a6092018 BP |
2605 | /* Fix "sample" action according to data collected while composing ODP actions, |
2606 | * as described in compose_sflow_action(). | |
2607 | * | |
2608 | * 'user_cookie_offset' must be the offset returned by add_sflow_action(). */ | |
9583bc14 | 2609 | static void |
a6092018 | 2610 | fix_sflow_action(struct xlate_ctx *ctx, unsigned int user_cookie_offset) |
9583bc14 EJ |
2611 | { |
2612 | const struct flow *base = &ctx->base_flow; | |
2613 | union user_action_cookie *cookie; | |
2614 | ||
a6092018 | 2615 | cookie = ofpbuf_at(ctx->odp_actions, user_cookie_offset, |
9583bc14 EJ |
2616 | sizeof cookie->sflow); |
2617 | ovs_assert(cookie->type == USER_ACTION_COOKIE_SFLOW); | |
2618 | ||
a6092018 BP |
2619 | cookie->type = USER_ACTION_COOKIE_SFLOW; |
2620 | cookie->sflow.vlan_tci = base->vlan_tci; | |
2621 | ||
2622 | /* See http://www.sflow.org/sflow_version_5.txt (search for "Input/output | |
2623 | * port information") for the interpretation of cookie->output. */ | |
2624 | switch (ctx->sflow_n_outputs) { | |
2625 | case 0: | |
2626 | /* 0x40000000 | 256 means "packet dropped for unknown reason". */ | |
2627 | cookie->sflow.output = 0x40000000 | 256; | |
2628 | break; | |
2629 | ||
2630 | case 1: | |
2631 | cookie->sflow.output = dpif_sflow_odp_port_to_ifindex( | |
2632 | ctx->xbridge->sflow, ctx->sflow_odp_port); | |
2633 | if (cookie->sflow.output) { | |
2634 | break; | |
2635 | } | |
2636 | /* Fall through. */ | |
2637 | default: | |
2638 | /* 0x80000000 means "multiple output ports. */ | |
2639 | cookie->sflow.output = 0x80000000 | ctx->sflow_n_outputs; | |
2640 | break; | |
2641 | } | |
9583bc14 EJ |
2642 | } |
2643 | ||
515793d5 BP |
2644 | static bool |
2645 | process_special(struct xlate_ctx *ctx, const struct xport *xport) | |
db7d4e46 | 2646 | { |
515793d5 | 2647 | const struct flow *flow = &ctx->xin->flow; |
49a73e0c | 2648 | struct flow_wildcards *wc = ctx->wc; |
46c88433 | 2649 | const struct xbridge *xbridge = ctx->xbridge; |
515793d5 BP |
2650 | const struct dp_packet *packet = ctx->xin->packet; |
2651 | enum slow_path_reason slow; | |
642dc74d | 2652 | |
46c88433 | 2653 | if (!xport) { |
515793d5 | 2654 | slow = 0; |
46c88433 | 2655 | } else if (xport->cfm && cfm_should_process_flow(xport->cfm, flow, wc)) { |
db7d4e46 | 2656 | if (packet) { |
46c88433 | 2657 | cfm_process_heartbeat(xport->cfm, packet); |
db7d4e46 | 2658 | } |
515793d5 | 2659 | slow = SLOW_CFM; |
fab52e16 | 2660 | } else if (xport->bfd && bfd_should_process_flow(xport->bfd, flow, wc)) { |
db7d4e46 | 2661 | if (packet) { |
46c88433 | 2662 | bfd_process_packet(xport->bfd, flow, packet); |
60d02c72 AW |
2663 | /* If POLL received, immediately sends FINAL back. */ |
2664 | if (bfd_should_send_packet(xport->bfd)) { | |
6d308b28 | 2665 | ofproto_dpif_monitor_port_send_soon(xport->ofport); |
60d02c72 | 2666 | } |
db7d4e46 | 2667 | } |
515793d5 | 2668 | slow = SLOW_BFD; |
46c88433 | 2669 | } else if (xport->xbundle && xport->xbundle->lacp |
db7d4e46 JP |
2670 | && flow->dl_type == htons(ETH_TYPE_LACP)) { |
2671 | if (packet) { | |
46c88433 | 2672 | lacp_process_packet(xport->xbundle->lacp, xport->ofport, packet); |
db7d4e46 | 2673 | } |
515793d5 | 2674 | slow = SLOW_LACP; |
9efd308e DV |
2675 | } else if ((xbridge->stp || xbridge->rstp) && |
2676 | stp_should_process_flow(flow, wc)) { | |
db7d4e46 | 2677 | if (packet) { |
f025bcb7 JR |
2678 | xbridge->stp |
2679 | ? stp_process_packet(xport, packet) | |
2680 | : rstp_process_packet(xport, packet); | |
db7d4e46 | 2681 | } |
515793d5 | 2682 | slow = SLOW_STP; |
19aef6ef | 2683 | } else if (xport->lldp && lldp_should_process_flow(xport->lldp, flow)) { |
0477baa9 DF |
2684 | if (packet) { |
2685 | lldp_process_packet(xport->lldp, packet); | |
2686 | } | |
515793d5 | 2687 | slow = SLOW_LLDP; |
db7d4e46 | 2688 | } else { |
515793d5 BP |
2689 | slow = 0; |
2690 | } | |
2691 | ||
2692 | if (slow) { | |
2693 | ctx->xout->slow |= slow; | |
2694 | return true; | |
2695 | } else { | |
2696 | return false; | |
db7d4e46 JP |
2697 | } |
2698 | } | |
2699 | ||
a36de779 PS |
2700 | static int |
2701 | tnl_route_lookup_flow(const struct flow *oflow, | |
c2b878e0 | 2702 | struct in6_addr *ip, struct xport **out_port) |
a36de779 PS |
2703 | { |
2704 | char out_dev[IFNAMSIZ]; | |
2705 | struct xbridge *xbridge; | |
2706 | struct xlate_cfg *xcfg; | |
c2b878e0 TLSC |
2707 | struct in6_addr gw; |
2708 | struct in6_addr dst; | |
a36de779 | 2709 | |
c2b878e0 TLSC |
2710 | dst = flow_tnl_dst(&oflow->tunnel); |
2711 | if (!ovs_router_lookup(&dst, out_dev, &gw)) { | |
a36de779 PS |
2712 | return -ENOENT; |
2713 | } | |
2714 | ||
c2b878e0 TLSC |
2715 | if (ipv6_addr_is_set(&gw) && |
2716 | (!IN6_IS_ADDR_V4MAPPED(&gw) || in6_addr_get_mapped_ipv4(&gw))) { | |
a36de779 PS |
2717 | *ip = gw; |
2718 | } else { | |
c2b878e0 | 2719 | *ip = dst; |
a36de779 PS |
2720 | } |
2721 | ||
2722 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
2723 | ovs_assert(xcfg); | |
2724 | ||
2725 | HMAP_FOR_EACH (xbridge, hmap_node, &xcfg->xbridges) { | |
2726 | if (!strncmp(xbridge->name, out_dev, IFNAMSIZ)) { | |
2727 | struct xport *port; | |
2728 | ||
2729 | HMAP_FOR_EACH (port, ofp_node, &xbridge->xports) { | |
2730 | if (!strncmp(netdev_get_name(port->netdev), out_dev, IFNAMSIZ)) { | |
2731 | *out_port = port; | |
2732 | return 0; | |
2733 | } | |
2734 | } | |
2735 | } | |
2736 | } | |
2737 | return -ENOENT; | |
2738 | } | |
2739 | ||
2740 | static int | |
cdd42eda JG |
2741 | compose_table_xlate(struct xlate_ctx *ctx, const struct xport *out_dev, |
2742 | struct dp_packet *packet) | |
a36de779 | 2743 | { |
cdd42eda | 2744 | struct xbridge *xbridge = out_dev->xbridge; |
a36de779 PS |
2745 | struct ofpact_output output; |
2746 | struct flow flow; | |
2747 | ||
2748 | ofpact_init(&output.ofpact, OFPACT_OUTPUT, sizeof output); | |
cf62fa4c | 2749 | flow_extract(packet, &flow); |
cdd42eda JG |
2750 | flow.in_port.ofp_port = out_dev->ofp_port; |
2751 | output.port = OFPP_TABLE; | |
a36de779 PS |
2752 | output.max_len = 0; |
2753 | ||
cdd42eda JG |
2754 | return ofproto_dpif_execute_actions__(xbridge->ofproto, &flow, NULL, |
2755 | &output.ofpact, sizeof output, | |
2756 | ctx->recurse, ctx->resubmits, packet); | |
a36de779 PS |
2757 | } |
2758 | ||
c2b878e0 TLSC |
2759 | static void |
2760 | tnl_send_nd_request(struct xlate_ctx *ctx, const struct xport *out_dev, | |
2761 | const struct eth_addr eth_src, | |
2762 | struct in6_addr * ipv6_src, struct in6_addr * ipv6_dst) | |
2763 | { | |
2764 | struct dp_packet packet; | |
2765 | ||
2766 | dp_packet_init(&packet, 0); | |
2767 | compose_nd(&packet, eth_src, ipv6_src, ipv6_dst); | |
2768 | compose_table_xlate(ctx, out_dev, &packet); | |
2769 | dp_packet_uninit(&packet); | |
2770 | } | |
2771 | ||
a36de779 | 2772 | static void |
cdd42eda | 2773 | tnl_send_arp_request(struct xlate_ctx *ctx, const struct xport *out_dev, |
74ff3298 | 2774 | const struct eth_addr eth_src, |
a36de779 PS |
2775 | ovs_be32 ip_src, ovs_be32 ip_dst) |
2776 | { | |
cf62fa4c | 2777 | struct dp_packet packet; |
a36de779 | 2778 | |
cf62fa4c | 2779 | dp_packet_init(&packet, 0); |
eb0b295e BP |
2780 | compose_arp(&packet, ARP_OP_REQUEST, |
2781 | eth_src, eth_addr_zero, true, ip_src, ip_dst); | |
a36de779 | 2782 | |
cdd42eda | 2783 | compose_table_xlate(ctx, out_dev, &packet); |
cf62fa4c | 2784 | dp_packet_uninit(&packet); |
a36de779 PS |
2785 | } |
2786 | ||
2787 | static int | |
81de18ec | 2788 | build_tunnel_send(struct xlate_ctx *ctx, const struct xport *xport, |
a36de779 PS |
2789 | const struct flow *flow, odp_port_t tunnel_odp_port) |
2790 | { | |
2791 | struct ovs_action_push_tnl tnl_push_data; | |
2792 | struct xport *out_dev = NULL; | |
c2b878e0 TLSC |
2793 | ovs_be32 s_ip = 0, d_ip = 0; |
2794 | struct in6_addr s_ip6 = in6addr_any; | |
2795 | struct in6_addr d_ip6 = in6addr_any; | |
74ff3298 JR |
2796 | struct eth_addr smac; |
2797 | struct eth_addr dmac; | |
a36de779 | 2798 | int err; |
c2b878e0 TLSC |
2799 | char buf_sip6[INET6_ADDRSTRLEN]; |
2800 | char buf_dip6[INET6_ADDRSTRLEN]; | |
a36de779 | 2801 | |
c2b878e0 | 2802 | err = tnl_route_lookup_flow(flow, &d_ip6, &out_dev); |
a36de779 | 2803 | if (err) { |
81de18ec | 2804 | xlate_report(ctx, "native tunnel routing failed"); |
a36de779 PS |
2805 | return err; |
2806 | } | |
c2b878e0 TLSC |
2807 | |
2808 | xlate_report(ctx, "tunneling to %s via %s", | |
2809 | ipv6_string_mapped(buf_dip6, &d_ip6), | |
2810 | netdev_get_name(out_dev->netdev)); | |
a36de779 PS |
2811 | |
2812 | /* Use mac addr of bridge port of the peer. */ | |
74ff3298 | 2813 | err = netdev_get_etheraddr(out_dev->netdev, &smac); |
a36de779 | 2814 | if (err) { |
81de18ec | 2815 | xlate_report(ctx, "tunnel output device lacks Ethernet address"); |
a36de779 PS |
2816 | return err; |
2817 | } | |
2818 | ||
c2b878e0 TLSC |
2819 | d_ip = in6_addr_get_mapped_ipv4(&d_ip6); |
2820 | if (d_ip) { | |
2821 | err = netdev_get_in4(out_dev->netdev, (struct in_addr *) &s_ip, NULL); | |
2822 | if (err) { | |
2823 | xlate_report(ctx, "tunnel output device lacks IPv4 address"); | |
2824 | return err; | |
2825 | } | |
2826 | in6_addr_set_mapped_ipv4(&s_ip6, s_ip); | |
2827 | } else { | |
2828 | err = netdev_get_in6(out_dev->netdev, &s_ip6); | |
2829 | if (err) { | |
2830 | xlate_report(ctx, "tunnel output device lacks IPv6 address"); | |
2831 | return err; | |
2832 | } | |
a36de779 PS |
2833 | } |
2834 | ||
c2b878e0 | 2835 | err = tnl_neigh_lookup(out_dev->xbridge->name, &d_ip6, &dmac); |
a36de779 | 2836 | if (err) { |
c2b878e0 TLSC |
2837 | xlate_report(ctx, "neighbor cache miss for %s on bridge %s, " |
2838 | "sending %s request", | |
2839 | buf_dip6, out_dev->xbridge->name, d_ip ? "ARP" : "ND"); | |
2840 | if (d_ip) { | |
2841 | tnl_send_arp_request(ctx, out_dev, smac, s_ip, d_ip); | |
2842 | } else { | |
2843 | tnl_send_nd_request(ctx, out_dev, smac, &s_ip6, &d_ip6); | |
2844 | } | |
a36de779 PS |
2845 | return err; |
2846 | } | |
c2b878e0 | 2847 | |
a36de779 PS |
2848 | if (ctx->xin->xcache) { |
2849 | struct xc_entry *entry; | |
2850 | ||
53902038 TLSC |
2851 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_TNL_NEIGH); |
2852 | ovs_strlcpy(entry->u.tnl_neigh_cache.br_name, out_dev->xbridge->name, | |
2853 | sizeof entry->u.tnl_neigh_cache.br_name); | |
c2b878e0 | 2854 | entry->u.tnl_neigh_cache.d_ipv6 = d_ip6; |
a36de779 | 2855 | } |
81de18ec | 2856 | |
c2b878e0 TLSC |
2857 | xlate_report(ctx, "tunneling from "ETH_ADDR_FMT" %s" |
2858 | " to "ETH_ADDR_FMT" %s", | |
2859 | ETH_ADDR_ARGS(smac), ipv6_string_mapped(buf_sip6, &s_ip6), | |
2860 | ETH_ADDR_ARGS(dmac), buf_dip6); | |
2861 | ||
a36de779 | 2862 | err = tnl_port_build_header(xport->ofport, flow, |
370e373b | 2863 | dmac, smac, &s_ip6, &tnl_push_data); |
a36de779 PS |
2864 | if (err) { |
2865 | return err; | |
2866 | } | |
2867 | tnl_push_data.tnl_port = odp_to_u32(tunnel_odp_port); | |
2868 | tnl_push_data.out_port = odp_to_u32(out_dev->odp_port); | |
1520ef4f | 2869 | odp_put_tnl_push_action(ctx->odp_actions, &tnl_push_data); |
a36de779 PS |
2870 | return 0; |
2871 | } | |
2872 | ||
704bb0bf JS |
2873 | static void |
2874 | xlate_commit_actions(struct xlate_ctx *ctx) | |
2875 | { | |
2876 | bool use_masked = ctx->xbridge->support.masked_set_action; | |
2877 | ||
2878 | ctx->xout->slow |= commit_odp_actions(&ctx->xin->flow, &ctx->base_flow, | |
2879 | ctx->odp_actions, ctx->wc, | |
2880 | use_masked); | |
2881 | } | |
2882 | ||
07659514 JS |
2883 | static void |
2884 | clear_conntrack(struct flow *flow) | |
2885 | { | |
2886 | flow->ct_state = 0; | |
2887 | flow->ct_zone = 0; | |
8e53fe8c | 2888 | flow->ct_mark = 0; |
9daf2348 | 2889 | memset(&flow->ct_label, 0, sizeof flow->ct_label); |
07659514 JS |
2890 | } |
2891 | ||
9583bc14 | 2892 | static void |
4e022ec0 | 2893 | compose_output_action__(struct xlate_ctx *ctx, ofp_port_t ofp_port, |
e93ef1c7 | 2894 | const struct xlate_bond_recirc *xr, bool check_stp) |
9583bc14 | 2895 | { |
46c88433 | 2896 | const struct xport *xport = get_ofp_port(ctx->xbridge, ofp_port); |
49a73e0c | 2897 | struct flow_wildcards *wc = ctx->wc; |
33bf9176 | 2898 | struct flow *flow = &ctx->xin->flow; |
a36de779 | 2899 | struct flow_tnl flow_tnl; |
9583bc14 | 2900 | ovs_be16 flow_vlan_tci; |
1362e248 | 2901 | uint32_t flow_pkt_mark; |
9583bc14 | 2902 | uint8_t flow_nw_tos; |
4e022ec0 | 2903 | odp_port_t out_port, odp_port; |
a36de779 | 2904 | bool tnl_push_pop_send = false; |
ca077186 | 2905 | uint8_t dscp; |
9583bc14 EJ |
2906 | |
2907 | /* If 'struct flow' gets additional metadata, we'll need to zero it out | |
2908 | * before traversing a patch port. */ | |
ffe4c74f | 2909 | BUILD_ASSERT_DECL(FLOW_WC_SEQ == 35); |
a36de779 | 2910 | memset(&flow_tnl, 0, sizeof flow_tnl); |
9583bc14 | 2911 | |
46c88433 | 2912 | if (!xport) { |
9583bc14 EJ |
2913 | xlate_report(ctx, "Nonexistent output port"); |
2914 | return; | |
46c88433 | 2915 | } else if (xport->config & OFPUTIL_PC_NO_FWD) { |
9583bc14 EJ |
2916 | xlate_report(ctx, "OFPPC_NO_FWD set, skipping output"); |
2917 | return; | |
0d1cee12 | 2918 | } else if (check_stp) { |
bbbca389 | 2919 | if (is_stp(&ctx->base_flow)) { |
9efd308e DV |
2920 | if (!xport_stp_should_forward_bpdu(xport) && |
2921 | !xport_rstp_should_manage_bpdu(xport)) { | |
2922 | if (ctx->xbridge->stp != NULL) { | |
2923 | xlate_report(ctx, "STP not in listening state, " | |
2924 | "skipping bpdu output"); | |
2925 | } else if (ctx->xbridge->rstp != NULL) { | |
2926 | xlate_report(ctx, "RSTP not managing BPDU in this state, " | |
2927 | "skipping bpdu output"); | |
2928 | } | |
0d1cee12 K |
2929 | return; |
2930 | } | |
9efd308e DV |
2931 | } else if (!xport_stp_forward_state(xport) || |
2932 | !xport_rstp_forward_state(xport)) { | |
2933 | if (ctx->xbridge->stp != NULL) { | |
2934 | xlate_report(ctx, "STP not in forwarding state, " | |
2935 | "skipping output"); | |
2936 | } else if (ctx->xbridge->rstp != NULL) { | |
2937 | xlate_report(ctx, "RSTP not in forwarding state, " | |
2938 | "skipping output"); | |
2939 | } | |
0d1cee12 K |
2940 | return; |
2941 | } | |
9583bc14 EJ |
2942 | } |
2943 | ||
46c88433 EJ |
2944 | if (xport->peer) { |
2945 | const struct xport *peer = xport->peer; | |
9583bc14 | 2946 | struct flow old_flow = ctx->xin->flow; |
07659514 | 2947 | bool old_conntrack = ctx->conntracked; |
7f5fe537 | 2948 | bool old_was_mpls = ctx->was_mpls; |
18721c4a | 2949 | cls_version_t old_version = ctx->tables_version; |
1774d762 JR |
2950 | struct ofpbuf old_stack = ctx->stack; |
2951 | union mf_subvalue new_stack[1024 / sizeof(union mf_subvalue)]; | |
ed9c9e3e JR |
2952 | struct ofpbuf old_action_set = ctx->action_set; |
2953 | uint64_t actset_stub[1024 / 8]; | |
9583bc14 | 2954 | |
1774d762 | 2955 | ofpbuf_use_stub(&ctx->stack, new_stack, sizeof new_stack); |
ed9c9e3e | 2956 | ofpbuf_use_stub(&ctx->action_set, actset_stub, sizeof actset_stub); |
46c88433 EJ |
2957 | ctx->xbridge = peer->xbridge; |
2958 | flow->in_port.ofp_port = peer->ofp_port; | |
33bf9176 BP |
2959 | flow->metadata = htonll(0); |
2960 | memset(&flow->tunnel, 0, sizeof flow->tunnel); | |
2961 | memset(flow->regs, 0, sizeof flow->regs); | |
c61f3870 | 2962 | flow->actset_output = OFPP_UNSET; |
07659514 JS |
2963 | ctx->conntracked = false; |
2964 | clear_conntrack(flow); | |
9583bc14 | 2965 | |
621b8064 JR |
2966 | /* The bridge is now known so obtain its table version. */ |
2967 | ctx->tables_version | |
2968 | = ofproto_dpif_get_tables_version(ctx->xbridge->ofproto); | |
2969 | ||
515793d5 | 2970 | if (!process_special(ctx, peer) && may_receive(peer, ctx)) { |
9efd308e | 2971 | if (xport_stp_forward_state(peer) && xport_rstp_forward_state(peer)) { |
e672ff9b | 2972 | xlate_table_action(ctx, flow->in_port.ofp_port, 0, true, true); |
ed9c9e3e | 2973 | if (ctx->action_set.size) { |
e672ff9b JR |
2974 | /* Translate action set only if not dropping the packet and |
2975 | * not recirculating. */ | |
2976 | if (!exit_recirculates(ctx)) { | |
2977 | xlate_action_set(ctx); | |
2978 | } | |
2979 | } | |
2980 | /* Check if need to recirculate. */ | |
2981 | if (exit_recirculates(ctx)) { | |
2982 | compose_recirculate_action(ctx); | |
ed9c9e3e | 2983 | } |
9583bc14 | 2984 | } else { |
9efd308e DV |
2985 | /* Forwarding is disabled by STP and RSTP. Let OFPP_NORMAL and |
2986 | * the learning action look at the packet, then drop it. */ | |
9583bc14 | 2987 | struct flow old_base_flow = ctx->base_flow; |
1520ef4f | 2988 | size_t old_size = ctx->odp_actions->size; |
3d6151f3 | 2989 | mirror_mask_t old_mirrors = ctx->mirrors; |
f3d5b473 | 2990 | |
e672ff9b | 2991 | xlate_table_action(ctx, flow->in_port.ofp_port, 0, true, true); |
3d6151f3 | 2992 | ctx->mirrors = old_mirrors; |
9583bc14 | 2993 | ctx->base_flow = old_base_flow; |
1520ef4f | 2994 | ctx->odp_actions->size = old_size; |
e672ff9b JR |
2995 | |
2996 | /* Undo changes that may have been done for recirculation. */ | |
2997 | if (exit_recirculates(ctx)) { | |
2998 | ctx->action_set.size = ctx->recirc_action_offset; | |
2999 | ctx->recirc_action_offset = -1; | |
3000 | ctx->last_unroll_offset = -1; | |
3001 | } | |
9583bc14 EJ |
3002 | } |
3003 | } | |
3004 | ||
3005 | ctx->xin->flow = old_flow; | |
832554e3 | 3006 | ctx->xbridge = xport->xbridge; |
ed9c9e3e JR |
3007 | ofpbuf_uninit(&ctx->action_set); |
3008 | ctx->action_set = old_action_set; | |
1774d762 JR |
3009 | ofpbuf_uninit(&ctx->stack); |
3010 | ctx->stack = old_stack; | |
9583bc14 | 3011 | |
621b8064 JR |
3012 | /* Restore calling bridge's lookup version. */ |
3013 | ctx->tables_version = old_version; | |
3014 | ||
7f5fe537 JR |
3015 | /* The peer bridge popping MPLS should have no effect on the original |
3016 | * bridge. */ | |
3017 | ctx->was_mpls = old_was_mpls; | |
3018 | ||
07659514 JS |
3019 | /* The peer bridge's conntrack execution should have no effect on the |
3020 | * original bridge. */ | |
3021 | ctx->conntracked = old_conntrack; | |
3022 | ||
f3d5b473 JR |
3023 | /* The fact that the peer bridge exits (for any reason) does not mean |
3024 | * that the original bridge should exit. Specifically, if the peer | |
3025 | * bridge recirculates (which typically modifies the packet), the | |
3026 | * original bridge must continue processing with the original, not the | |
3027 | * recirculated packet! */ | |
3028 | ctx->exit = false; | |
3029 | ||
fff1b9c0 JR |
3030 | /* Peer bridge errors do not propagate back. */ |
3031 | ctx->error = XLATE_OK; | |
3032 | ||
9583bc14 | 3033 | if (ctx->xin->resubmit_stats) { |
46c88433 EJ |
3034 | netdev_vport_inc_tx(xport->netdev, ctx->xin->resubmit_stats); |
3035 | netdev_vport_inc_rx(peer->netdev, ctx->xin->resubmit_stats); | |
a1aeea86 AW |
3036 | if (peer->bfd) { |
3037 | bfd_account_rx(peer->bfd, ctx->xin->resubmit_stats); | |
3038 | } | |
9583bc14 | 3039 | } |
b256dc52 JS |
3040 | if (ctx->xin->xcache) { |
3041 | struct xc_entry *entry; | |
3042 | ||
3043 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_NETDEV); | |
3044 | entry->u.dev.tx = netdev_ref(xport->netdev); | |
3045 | entry->u.dev.rx = netdev_ref(peer->netdev); | |
3046 | entry->u.dev.bfd = bfd_ref(peer->bfd); | |
3047 | } | |
9583bc14 EJ |
3048 | return; |
3049 | } | |
3050 | ||
33bf9176 | 3051 | flow_vlan_tci = flow->vlan_tci; |
1362e248 | 3052 | flow_pkt_mark = flow->pkt_mark; |
33bf9176 | 3053 | flow_nw_tos = flow->nw_tos; |
9583bc14 | 3054 | |
16194afd DDP |
3055 | if (count_skb_priorities(xport)) { |
3056 | memset(&wc->masks.skb_priority, 0xff, sizeof wc->masks.skb_priority); | |
3057 | if (dscp_from_skb_priority(xport, flow->skb_priority, &dscp)) { | |
3058 | wc->masks.nw_tos |= IP_DSCP_MASK; | |
3059 | flow->nw_tos &= ~IP_DSCP_MASK; | |
3060 | flow->nw_tos |= dscp; | |
3061 | } | |
9583bc14 EJ |
3062 | } |
3063 | ||
46c88433 | 3064 | if (xport->is_tunnel) { |
c2b878e0 | 3065 | struct in6_addr dst; |
9583bc14 EJ |
3066 | /* Save tunnel metadata so that changes made due to |
3067 | * the Logical (tunnel) Port are not visible for any further | |
3068 | * matches, while explicit set actions on tunnel metadata are. | |
3069 | */ | |
a36de779 | 3070 | flow_tnl = flow->tunnel; |
49a73e0c | 3071 | odp_port = tnl_port_send(xport->ofport, flow, ctx->wc); |
4e022ec0 | 3072 | if (odp_port == ODPP_NONE) { |
9583bc14 EJ |
3073 | xlate_report(ctx, "Tunneling decided against output"); |
3074 | goto out; /* restore flow_nw_tos */ | |
3075 | } | |
c2b878e0 TLSC |
3076 | dst = flow_tnl_dst(&flow->tunnel); |
3077 | if (ipv6_addr_equals(&dst, &ctx->orig_tunnel_ipv6_dst)) { | |
9583bc14 EJ |
3078 | xlate_report(ctx, "Not tunneling to our own address"); |
3079 | goto out; /* restore flow_nw_tos */ | |
3080 | } | |
3081 | if (ctx->xin->resubmit_stats) { | |
46c88433 | 3082 | netdev_vport_inc_tx(xport->netdev, ctx->xin->resubmit_stats); |
9583bc14 | 3083 | } |
b256dc52 JS |
3084 | if (ctx->xin->xcache) { |
3085 | struct xc_entry *entry; | |
3086 | ||
3087 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_NETDEV); | |
3088 | entry->u.dev.tx = netdev_ref(xport->netdev); | |
3089 | } | |
9583bc14 | 3090 | out_port = odp_port; |
a36de779 | 3091 | if (ovs_native_tunneling_is_on(ctx->xbridge->ofproto)) { |
81de18ec | 3092 | xlate_report(ctx, "output to native tunnel"); |
a36de779 PS |
3093 | tnl_push_pop_send = true; |
3094 | } else { | |
81de18ec | 3095 | xlate_report(ctx, "output to kernel tunnel"); |
1520ef4f | 3096 | commit_odp_tunnel_action(flow, &ctx->base_flow, ctx->odp_actions); |
a36de779 PS |
3097 | flow->tunnel = flow_tnl; /* Restore tunnel metadata */ |
3098 | } | |
9583bc14 | 3099 | } else { |
46c88433 | 3100 | odp_port = xport->odp_port; |
7614e5d0 | 3101 | out_port = odp_port; |
46c88433 | 3102 | if (ofproto_has_vlan_splinters(ctx->xbridge->ofproto)) { |
7614e5d0 JR |
3103 | ofp_port_t vlandev_port; |
3104 | ||
1dd35f8a | 3105 | wc->masks.vlan_tci |= htons(VLAN_VID_MASK | VLAN_CFI); |
7614e5d0 JR |
3106 | vlandev_port = vsp_realdev_to_vlandev(ctx->xbridge->ofproto, |
3107 | ofp_port, flow->vlan_tci); | |
3108 | if (vlandev_port != ofp_port) { | |
3109 | out_port = ofp_port_to_odp_port(ctx->xbridge, vlandev_port); | |
3110 | flow->vlan_tci = htons(0); | |
3111 | } | |
9583bc14 | 3112 | } |
9583bc14 | 3113 | } |
9583bc14 | 3114 | |
4e022ec0 | 3115 | if (out_port != ODPP_NONE) { |
704bb0bf | 3116 | xlate_commit_actions(ctx); |
adcf00ba | 3117 | |
e93ef1c7 | 3118 | if (xr) { |
347bf289 | 3119 | struct ovs_action_hash *act_hash; |
adcf00ba | 3120 | |
347bf289 | 3121 | /* Hash action. */ |
1520ef4f | 3122 | act_hash = nl_msg_put_unspec_uninit(ctx->odp_actions, |
347bf289 AZ |
3123 | OVS_ACTION_ATTR_HASH, |
3124 | sizeof *act_hash); | |
3125 | act_hash->hash_alg = xr->hash_alg; | |
62ac1f20 | 3126 | act_hash->hash_basis = xr->hash_basis; |
347bf289 AZ |
3127 | |
3128 | /* Recirc action. */ | |
1520ef4f | 3129 | nl_msg_put_u32(ctx->odp_actions, OVS_ACTION_ATTR_RECIRC, |
347bf289 | 3130 | xr->recirc_id); |
adcf00ba | 3131 | } else { |
a36de779 PS |
3132 | |
3133 | if (tnl_push_pop_send) { | |
3134 | build_tunnel_send(ctx, xport, flow, odp_port); | |
3135 | flow->tunnel = flow_tnl; /* Restore tunnel metadata */ | |
3136 | } else { | |
3137 | odp_port_t odp_tnl_port = ODPP_NONE; | |
3138 | ||
3139 | /* XXX: Write better Filter for tunnel port. We can use inport | |
3140 | * int tunnel-port flow to avoid these checks completely. */ | |
3141 | if (ofp_port == OFPP_LOCAL && | |
3142 | ovs_native_tunneling_is_on(ctx->xbridge->ofproto)) { | |
3143 | ||
3144 | odp_tnl_port = tnl_port_map_lookup(flow, wc); | |
3145 | } | |
3146 | ||
3147 | if (odp_tnl_port != ODPP_NONE) { | |
1520ef4f | 3148 | nl_msg_put_odp_port(ctx->odp_actions, |
a36de779 PS |
3149 | OVS_ACTION_ATTR_TUNNEL_POP, |
3150 | odp_tnl_port); | |
3151 | } else { | |
3152 | /* Tunnel push-pop action is not compatible with | |
3153 | * IPFIX action. */ | |
a6092018 | 3154 | compose_ipfix_action(ctx, out_port); |
1520ef4f | 3155 | nl_msg_put_odp_port(ctx->odp_actions, |
a36de779 PS |
3156 | OVS_ACTION_ATTR_OUTPUT, |
3157 | out_port); | |
3158 | } | |
3159 | } | |
adcf00ba | 3160 | } |
9583bc14 | 3161 | |
6cbbf4fa EJ |
3162 | ctx->sflow_odp_port = odp_port; |
3163 | ctx->sflow_n_outputs++; | |
2031ef97 | 3164 | ctx->nf_output_iface = ofp_port; |
6cbbf4fa EJ |
3165 | } |
3166 | ||
7efbc3b7 BP |
3167 | if (mbridge_has_mirrors(ctx->xbridge->mbridge) && xport->xbundle) { |
3168 | mirror_packet(ctx, xport->xbundle, | |
3169 | xbundle_mirror_dst(xport->xbundle->xbridge, | |
3170 | xport->xbundle)); | |
3171 | } | |
3172 | ||
6cbbf4fa | 3173 | out: |
9583bc14 | 3174 | /* Restore flow */ |
33bf9176 | 3175 | flow->vlan_tci = flow_vlan_tci; |
1362e248 | 3176 | flow->pkt_mark = flow_pkt_mark; |
33bf9176 | 3177 | flow->nw_tos = flow_nw_tos; |
9583bc14 EJ |
3178 | } |
3179 | ||
3180 | static void | |
e93ef1c7 JR |
3181 | compose_output_action(struct xlate_ctx *ctx, ofp_port_t ofp_port, |
3182 | const struct xlate_bond_recirc *xr) | |
9583bc14 | 3183 | { |
e93ef1c7 | 3184 | compose_output_action__(ctx, ofp_port, xr, true); |
9583bc14 EJ |
3185 | } |
3186 | ||
bb61b33d BP |
3187 | static void |
3188 | xlate_recursively(struct xlate_ctx *ctx, struct rule_dpif *rule) | |
bb61b33d BP |
3189 | { |
3190 | struct rule_dpif *old_rule = ctx->rule; | |
8b1e5560 | 3191 | ovs_be64 old_cookie = ctx->rule_cookie; |
dc723c44 | 3192 | const struct rule_actions *actions; |
bb61b33d BP |
3193 | |
3194 | if (ctx->xin->resubmit_stats) { | |
70742c7f | 3195 | rule_dpif_credit_stats(rule, ctx->xin->resubmit_stats); |
bb61b33d BP |
3196 | } |
3197 | ||
98b07853 | 3198 | ctx->resubmits++; |
bb61b33d BP |
3199 | ctx->recurse++; |
3200 | ctx->rule = rule; | |
8b1e5560 | 3201 | ctx->rule_cookie = rule_dpif_get_flow_cookie(rule); |
6f00e29b BP |
3202 | actions = rule_dpif_get_actions(rule); |
3203 | do_xlate_actions(actions->ofpacts, actions->ofpacts_len, ctx); | |
8b1e5560 | 3204 | ctx->rule_cookie = old_cookie; |
bb61b33d BP |
3205 | ctx->rule = old_rule; |
3206 | ctx->recurse--; | |
bb61b33d BP |
3207 | } |
3208 | ||
bd3240ba SH |
3209 | static bool |
3210 | xlate_resubmit_resource_check(struct xlate_ctx *ctx) | |
9583bc14 | 3211 | { |
adcf00ba | 3212 | if (ctx->recurse >= MAX_RESUBMIT_RECURSION + MAX_INTERNAL_RESUBMITS) { |
fff1b9c0 JR |
3213 | XLATE_REPORT_ERROR(ctx, "resubmit actions recursed over %d times", |
3214 | MAX_RESUBMIT_RECURSION); | |
3215 | ctx->error = XLATE_RECURSION_TOO_DEEP; | |
adcf00ba | 3216 | } else if (ctx->resubmits >= MAX_RESUBMITS + MAX_INTERNAL_RESUBMITS) { |
fff1b9c0 JR |
3217 | XLATE_REPORT_ERROR(ctx, "over %d resubmit actions", MAX_RESUBMITS); |
3218 | ctx->error = XLATE_TOO_MANY_RESUBMITS; | |
1520ef4f | 3219 | } else if (ctx->odp_actions->size > UINT16_MAX) { |
fff1b9c0 JR |
3220 | XLATE_REPORT_ERROR(ctx, "resubmits yielded over 64 kB of actions"); |
3221 | /* NOT an error, as we'll be slow-pathing the flow in this case? */ | |
3222 | ctx->exit = true; /* XXX: translation still terminated! */ | |
6fd6ed71 | 3223 | } else if (ctx->stack.size >= 65536) { |
fff1b9c0 JR |
3224 | XLATE_REPORT_ERROR(ctx, "resubmits yielded over 64 kB of stack"); |
3225 | ctx->error = XLATE_STACK_TOO_DEEP; | |
98b07853 | 3226 | } else { |
bd3240ba SH |
3227 | return true; |
3228 | } | |
3229 | ||
3230 | return false; | |
3231 | } | |
3232 | ||
3233 | static void | |
6d328fa2 SH |
3234 | xlate_table_action(struct xlate_ctx *ctx, ofp_port_t in_port, uint8_t table_id, |
3235 | bool may_packet_in, bool honor_table_miss) | |
bd3240ba | 3236 | { |
1d741d6d JR |
3237 | /* Check if we need to recirculate before matching in a table. */ |
3238 | if (ctx->was_mpls) { | |
3239 | ctx_trigger_recirculation(ctx); | |
3240 | return; | |
3241 | } | |
bd3240ba | 3242 | if (xlate_resubmit_resource_check(ctx)) { |
9583bc14 | 3243 | uint8_t old_table_id = ctx->table_id; |
3f207910 | 3244 | struct rule_dpif *rule; |
9583bc14 EJ |
3245 | |
3246 | ctx->table_id = table_id; | |
3247 | ||
34dd0d78 | 3248 | rule = rule_dpif_lookup_from_table(ctx->xbridge->ofproto, |
621b8064 | 3249 | ctx->tables_version, |
49a73e0c | 3250 | &ctx->xin->flow, ctx->xin->wc, |
34dd0d78 JR |
3251 | ctx->xin->resubmit_stats, |
3252 | &ctx->table_id, in_port, | |
3253 | may_packet_in, honor_table_miss); | |
9583bc14 | 3254 | |
a8c31348 BP |
3255 | if (OVS_UNLIKELY(ctx->xin->resubmit_hook)) { |
3256 | ctx->xin->resubmit_hook(ctx->xin, rule, ctx->recurse + 1); | |
ad3efdcb EJ |
3257 | } |
3258 | ||
a2143702 | 3259 | if (rule) { |
83709dfa JR |
3260 | /* Fill in the cache entry here instead of xlate_recursively |
3261 | * to make the reference counting more explicit. We take a | |
3262 | * reference in the lookups above if we are going to cache the | |
3263 | * rule. */ | |
3264 | if (ctx->xin->xcache) { | |
3265 | struct xc_entry *entry; | |
3266 | ||
3267 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_RULE); | |
3268 | entry->u.rule = rule; | |
1e1e1d19 | 3269 | rule_dpif_ref(rule); |
83709dfa | 3270 | } |
bb61b33d | 3271 | xlate_recursively(ctx, rule); |
ad3efdcb EJ |
3272 | } |
3273 | ||
9583bc14 | 3274 | ctx->table_id = old_table_id; |
98b07853 | 3275 | return; |
9583bc14 EJ |
3276 | } |
3277 | } | |
3278 | ||
f4fb341b | 3279 | static void |
1e684d7d RW |
3280 | xlate_group_stats(struct xlate_ctx *ctx, struct group_dpif *group, |
3281 | struct ofputil_bucket *bucket) | |
3282 | { | |
3283 | if (ctx->xin->resubmit_stats) { | |
3284 | group_dpif_credit_stats(group, bucket, ctx->xin->resubmit_stats); | |
3285 | } | |
3286 | if (ctx->xin->xcache) { | |
3287 | struct xc_entry *entry; | |
3288 | ||
3289 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_GROUP); | |
3290 | entry->u.group.group = group_dpif_ref(group); | |
3291 | entry->u.group.bucket = bucket; | |
3292 | } | |
3293 | } | |
3294 | ||
3295 | static void | |
3296 | xlate_group_bucket(struct xlate_ctx *ctx, struct ofputil_bucket *bucket) | |
f4fb341b SH |
3297 | { |
3298 | uint64_t action_list_stub[1024 / 8]; | |
3299 | struct ofpbuf action_list, action_set; | |
5b09e569 JR |
3300 | struct flow old_flow = ctx->xin->flow; |
3301 | bool old_was_mpls = ctx->was_mpls; | |
f4fb341b SH |
3302 | |
3303 | ofpbuf_use_const(&action_set, bucket->ofpacts, bucket->ofpacts_len); | |
3304 | ofpbuf_use_stub(&action_list, action_list_stub, sizeof action_list_stub); | |
3305 | ||
3306 | ofpacts_execute_action_set(&action_list, &action_set); | |
3307 | ctx->recurse++; | |
6fd6ed71 | 3308 | do_xlate_actions(action_list.data, action_list.size, ctx); |
f4fb341b SH |
3309 | ctx->recurse--; |
3310 | ||
3311 | ofpbuf_uninit(&action_set); | |
3312 | ofpbuf_uninit(&action_list); | |
5b09e569 | 3313 | |
e672ff9b JR |
3314 | /* Check if need to recirculate. */ |
3315 | if (exit_recirculates(ctx)) { | |
3316 | compose_recirculate_action(ctx); | |
3317 | } | |
3318 | ||
5b09e569 JR |
3319 | /* Roll back flow to previous state. |
3320 | * This is equivalent to cloning the packet for each bucket. | |
3321 | * | |
3322 | * As a side effect any subsequently applied actions will | |
3323 | * also effectively be applied to a clone of the packet taken | |
3324 | * just before applying the all or indirect group. | |
3325 | * | |
3326 | * Note that group buckets are action sets, hence they cannot modify the | |
3327 | * main action set. Also any stack actions are ignored when executing an | |
3328 | * action set, so group buckets cannot change the stack either. | |
3329 | * However, we do allow resubmit actions in group buckets, which could | |
3330 | * break the above assumptions. It is up to the controller to not mess up | |
3331 | * with the action_set and stack in the tables resubmitted to from | |
3332 | * group buckets. */ | |
3333 | ctx->xin->flow = old_flow; | |
3334 | ||
3335 | /* The group bucket popping MPLS should have no effect after bucket | |
3336 | * execution. */ | |
3337 | ctx->was_mpls = old_was_mpls; | |
3338 | ||
3339 | /* The fact that the group bucket exits (for any reason) does not mean that | |
3340 | * the translation after the group action should exit. Specifically, if | |
3341 | * the group bucket recirculates (which typically modifies the packet), the | |
3342 | * actions after the group action must continue processing with the | |
3343 | * original, not the recirculated packet! */ | |
3344 | ctx->exit = false; | |
f4fb341b SH |
3345 | } |
3346 | ||
3347 | static void | |
3348 | xlate_all_group(struct xlate_ctx *ctx, struct group_dpif *group) | |
3349 | { | |
1e684d7d | 3350 | struct ofputil_bucket *bucket; |
ca6ba700 | 3351 | const struct ovs_list *buckets; |
f4fb341b SH |
3352 | |
3353 | group_dpif_get_buckets(group, &buckets); | |
3354 | ||
3355 | LIST_FOR_EACH (bucket, list_node, buckets) { | |
3356 | xlate_group_bucket(ctx, bucket); | |
f4fb341b | 3357 | } |
1e684d7d | 3358 | xlate_group_stats(ctx, group, NULL); |
f4fb341b SH |
3359 | } |
3360 | ||
dd8cd4b4 SH |
3361 | static void |
3362 | xlate_ff_group(struct xlate_ctx *ctx, struct group_dpif *group) | |
3363 | { | |
1e684d7d | 3364 | struct ofputil_bucket *bucket; |
dd8cd4b4 SH |
3365 | |
3366 | bucket = group_first_live_bucket(ctx, group, 0); | |
3367 | if (bucket) { | |
3368 | xlate_group_bucket(ctx, bucket); | |
1e684d7d | 3369 | xlate_group_stats(ctx, group, bucket); |
dd8cd4b4 SH |
3370 | } |
3371 | } | |
3372 | ||
fe7e5749 | 3373 | static void |
7565c3e4 | 3374 | xlate_default_select_group(struct xlate_ctx *ctx, struct group_dpif *group) |
fe7e5749 | 3375 | { |
49a73e0c | 3376 | struct flow_wildcards *wc = ctx->wc; |
1e684d7d | 3377 | struct ofputil_bucket *bucket; |
fe7e5749 SH |
3378 | uint32_t basis; |
3379 | ||
1d1aae0b | 3380 | basis = flow_hash_symmetric_l4(&ctx->xin->flow, 0); |
80e3509d | 3381 | flow_mask_hash_fields(&ctx->xin->flow, wc, NX_HASH_FIELDS_SYMMETRIC_L4); |
fe7e5749 SH |
3382 | bucket = group_best_live_bucket(ctx, group, basis); |
3383 | if (bucket) { | |
fe7e5749 | 3384 | xlate_group_bucket(ctx, bucket); |
1e684d7d | 3385 | xlate_group_stats(ctx, group, bucket); |
fe7e5749 SH |
3386 | } |
3387 | } | |
3388 | ||
0c4b9393 SH |
3389 | static void |
3390 | xlate_hash_fields_select_group(struct xlate_ctx *ctx, struct group_dpif *group) | |
3391 | { | |
3392 | struct mf_bitmap hash_fields = MF_BITMAP_INITIALIZER; | |
0c4b9393 SH |
3393 | const struct field_array *fields; |
3394 | struct ofputil_bucket *bucket; | |
3395 | uint32_t basis; | |
3396 | int i; | |
3397 | ||
3398 | fields = group_dpif_get_fields(group); | |
3399 | basis = hash_uint64(group_dpif_get_selection_method_param(group)); | |
3400 | ||
3401 | /* Determine which fields to hash */ | |
3402 | for (i = 0; i < MFF_N_IDS; i++) { | |
3403 | if (bitmap_is_set(fields->used.bm, i)) { | |
3404 | const struct mf_field *mf; | |
3405 | ||
3406 | /* If the field is already present in 'hash_fields' then | |
3407 | * this loop has already checked that it and its pre-requisites | |
3408 | * are present in the flow and its pre-requisites have | |
3409 | * already been added to 'hash_fields'. There is nothing more | |
3410 | * to do here and as an optimisation the loop can continue. */ | |
3411 | if (bitmap_is_set(hash_fields.bm, i)) { | |
3412 | continue; | |
3413 | } | |
3414 | ||
3415 | mf = mf_from_id(i); | |
3416 | ||
3417 | /* Only hash a field if it and its pre-requisites are present | |
3418 | * in the flow. */ | |
3419 | if (!mf_are_prereqs_ok(mf, &ctx->xin->flow)) { | |
3420 | continue; | |
3421 | } | |
3422 | ||
3423 | /* Hash both the field and its pre-requisites */ | |
3424 | mf_bitmap_set_field_and_prereqs(mf, &hash_fields); | |
3425 | } | |
3426 | } | |
3427 | ||
3428 | /* Hash the fields */ | |
3429 | for (i = 0; i < MFF_N_IDS; i++) { | |
3430 | if (bitmap_is_set(hash_fields.bm, i)) { | |
3431 | const struct mf_field *mf = mf_from_id(i); | |
3432 | union mf_value value; | |
3433 | int j; | |
3434 | ||
3435 | mf_get_value(mf, &ctx->xin->flow, &value); | |
3436 | /* This seems inefficient but so does apply_mask() */ | |
3437 | for (j = 0; j < mf->n_bytes; j++) { | |
3438 | ((uint8_t *) &value)[j] &= ((uint8_t *) &fields->value[i])[j]; | |
3439 | } | |
3440 | basis = hash_bytes(&value, mf->n_bytes, basis); | |
3441 | ||
1cb20095 JG |
3442 | /* For tunnels, hash in whether the field is present. */ |
3443 | if (mf_is_tun_metadata(mf)) { | |
3444 | basis = hash_boolean(mf_is_set(mf, &ctx->xin->flow), basis); | |
3445 | } | |
3446 | ||
49a73e0c | 3447 | mf_mask_field(mf, &ctx->wc->masks); |
0c4b9393 SH |
3448 | } |
3449 | } | |
3450 | ||
3451 | bucket = group_best_live_bucket(ctx, group, basis); | |
3452 | if (bucket) { | |
3453 | xlate_group_bucket(ctx, bucket); | |
3454 | xlate_group_stats(ctx, group, bucket); | |
3455 | } | |
3456 | } | |
3457 | ||
7565c3e4 SH |
3458 | static void |
3459 | xlate_select_group(struct xlate_ctx *ctx, struct group_dpif *group) | |
3460 | { | |
3461 | const char *selection_method = group_dpif_get_selection_method(group); | |
3462 | ||
3463 | if (selection_method[0] == '\0') { | |
3464 | xlate_default_select_group(ctx, group); | |
0c4b9393 SH |
3465 | } else if (!strcasecmp("hash", selection_method)) { |
3466 | xlate_hash_fields_select_group(ctx, group); | |
7565c3e4 SH |
3467 | } else { |
3468 | /* Parsing of groups should ensure this never happens */ | |
3469 | OVS_NOT_REACHED(); | |
3470 | } | |
3471 | } | |
3472 | ||
f4fb341b SH |
3473 | static void |
3474 | xlate_group_action__(struct xlate_ctx *ctx, struct group_dpif *group) | |
3475 | { | |
0eb48fe1 | 3476 | bool was_in_group = ctx->in_group; |
5a070238 BP |
3477 | ctx->in_group = true; |
3478 | ||
f4fb341b SH |
3479 | switch (group_dpif_get_type(group)) { |
3480 | case OFPGT11_ALL: | |
3481 | case OFPGT11_INDIRECT: | |
3482 | xlate_all_group(ctx, group); | |
3483 | break; | |
3484 | case OFPGT11_SELECT: | |
fe7e5749 | 3485 | xlate_select_group(ctx, group); |
f4fb341b | 3486 | break; |
dd8cd4b4 SH |
3487 | case OFPGT11_FF: |
3488 | xlate_ff_group(ctx, group); | |
3489 | break; | |
f4fb341b | 3490 | default: |
428b2edd | 3491 | OVS_NOT_REACHED(); |
f4fb341b | 3492 | } |
809c7548 | 3493 | group_dpif_unref(group); |
5a070238 | 3494 | |
0eb48fe1 | 3495 | ctx->in_group = was_in_group; |
f4fb341b SH |
3496 | } |
3497 | ||
3498 | static bool | |
3499 | xlate_group_action(struct xlate_ctx *ctx, uint32_t group_id) | |
3500 | { | |
0eb48fe1 | 3501 | if (xlate_resubmit_resource_check(ctx)) { |
f4fb341b SH |
3502 | struct group_dpif *group; |
3503 | bool got_group; | |
3504 | ||
3505 | got_group = group_dpif_lookup(ctx->xbridge->ofproto, group_id, &group); | |
3506 | if (got_group) { | |
3507 | xlate_group_action__(ctx, group); | |
3508 | } else { | |
3509 | return true; | |
3510 | } | |
3511 | } | |
3512 | ||
3513 | return false; | |
3514 | } | |
3515 | ||
9583bc14 EJ |
3516 | static void |
3517 | xlate_ofpact_resubmit(struct xlate_ctx *ctx, | |
3518 | const struct ofpact_resubmit *resubmit) | |
3519 | { | |
4e022ec0 | 3520 | ofp_port_t in_port; |
9583bc14 | 3521 | uint8_t table_id; |
adcf00ba AZ |
3522 | bool may_packet_in = false; |
3523 | bool honor_table_miss = false; | |
3524 | ||
3525 | if (ctx->rule && rule_dpif_is_internal(ctx->rule)) { | |
3526 | /* Still allow missed packets to be sent to the controller | |
3527 | * if resubmitting from an internal table. */ | |
3528 | may_packet_in = true; | |
3529 | honor_table_miss = true; | |
3530 | } | |
9583bc14 EJ |
3531 | |
3532 | in_port = resubmit->in_port; | |
3533 | if (in_port == OFPP_IN_PORT) { | |
4e022ec0 | 3534 | in_port = ctx->xin->flow.in_port.ofp_port; |
9583bc14 EJ |
3535 | } |
3536 | ||
3537 | table_id = resubmit->table_id; | |
3538 | if (table_id == 255) { | |
3539 | table_id = ctx->table_id; | |
3540 | } | |
3541 | ||
adcf00ba AZ |
3542 | xlate_table_action(ctx, in_port, table_id, may_packet_in, |
3543 | honor_table_miss); | |
9583bc14 EJ |
3544 | } |
3545 | ||
3546 | static void | |
3547 | flood_packets(struct xlate_ctx *ctx, bool all) | |
3548 | { | |
46c88433 | 3549 | const struct xport *xport; |
9583bc14 | 3550 | |
46c88433 EJ |
3551 | HMAP_FOR_EACH (xport, ofp_node, &ctx->xbridge->xports) { |
3552 | if (xport->ofp_port == ctx->xin->flow.in_port.ofp_port) { | |
9583bc14 EJ |
3553 | continue; |
3554 | } | |
3555 | ||
3556 | if (all) { | |
e93ef1c7 | 3557 | compose_output_action__(ctx, xport->ofp_port, NULL, false); |
46c88433 | 3558 | } else if (!(xport->config & OFPUTIL_PC_NO_FLOOD)) { |
e93ef1c7 | 3559 | compose_output_action(ctx, xport->ofp_port, NULL); |
9583bc14 EJ |
3560 | } |
3561 | } | |
3562 | ||
2031ef97 | 3563 | ctx->nf_output_iface = NF_OUT_FLOOD; |
9583bc14 EJ |
3564 | } |
3565 | ||
3566 | static void | |
3567 | execute_controller_action(struct xlate_ctx *ctx, int len, | |
3568 | enum ofp_packet_in_reason reason, | |
3569 | uint16_t controller_id) | |
3570 | { | |
e14deea0 | 3571 | struct dp_packet *packet; |
9583bc14 | 3572 | |
04594cd5 | 3573 | ctx->xout->slow |= SLOW_CONTROLLER; |
b476e2f2 | 3574 | xlate_commit_actions(ctx); |
9583bc14 EJ |
3575 | if (!ctx->xin->packet) { |
3576 | return; | |
3577 | } | |
3578 | ||
cf62fa4c | 3579 | packet = dp_packet_clone(ctx->xin->packet); |
9583bc14 | 3580 | |
41ccaa24 | 3581 | odp_execute_actions(NULL, &packet, 1, false, |
1520ef4f | 3582 | ctx->odp_actions->data, ctx->odp_actions->size, NULL); |
9583bc14 | 3583 | |
9bfe9334 BP |
3584 | /* A packet sent by an action in a table-miss rule is considered an |
3585 | * explicit table miss. OpenFlow before 1.3 doesn't have that concept so | |
3586 | * it will get translated back to OFPR_ACTION for those versions. */ | |
3587 | if (reason == OFPR_ACTION | |
3588 | && ctx->rule && rule_dpif_is_table_miss(ctx->rule)) { | |
3589 | reason = OFPR_EXPLICIT_MISS; | |
3590 | } | |
3591 | ||
3592 | size_t packet_len = dp_packet_size(packet); | |
0fb7792a | 3593 | |
a2b53dec BP |
3594 | struct ofproto_async_msg *am = xmalloc(sizeof *am); |
3595 | *am = (struct ofproto_async_msg) { | |
9bfe9334 | 3596 | .controller_id = controller_id, |
a2b53dec BP |
3597 | .oam = OAM_PACKET_IN, |
3598 | .pin = { | |
3599 | .up = { | |
3600 | .packet = dp_packet_steal_data(packet), | |
3601 | .len = packet_len, | |
3602 | .reason = reason, | |
3603 | .table_id = ctx->table_id, | |
3604 | .cookie = ctx->rule_cookie, | |
3605 | }, | |
3606 | .max_len = len, | |
9bfe9334 | 3607 | }, |
9bfe9334 | 3608 | }; |
a2b53dec | 3609 | flow_get_metadata(&ctx->xin->flow, &am->pin.up.flow_metadata); |
9583bc14 | 3610 | |
a2b53dec | 3611 | ofproto_dpif_send_async_msg(ctx->xbridge->ofproto, am); |
e14deea0 | 3612 | dp_packet_delete(packet); |
9583bc14 EJ |
3613 | } |
3614 | ||
7bbdd84f | 3615 | static void |
07659514 | 3616 | compose_recirculate_action__(struct xlate_ctx *ctx, uint8_t table) |
7bbdd84f | 3617 | { |
e672ff9b | 3618 | struct recirc_metadata md; |
7bbdd84f | 3619 | uint32_t id; |
7bbdd84f | 3620 | |
e672ff9b | 3621 | recirc_metadata_from_flow(&md, &ctx->xin->flow); |
7bbdd84f | 3622 | |
e672ff9b | 3623 | ovs_assert(ctx->recirc_action_offset >= 0); |
7bbdd84f | 3624 | |
2082425c | 3625 | struct recirc_state state = { |
07659514 | 3626 | .table_id = table, |
2082425c BP |
3627 | .ofproto = ctx->xbridge->ofproto, |
3628 | .metadata = md, | |
5c1b2314 BP |
3629 | .stack = ctx->stack.data, |
3630 | .n_stack = ctx->stack.size / sizeof(union mf_subvalue), | |
29bae541 | 3631 | .mirrors = ctx->mirrors, |
07659514 | 3632 | .conntracked = ctx->conntracked, |
2082425c BP |
3633 | .action_set_len = ctx->recirc_action_offset, |
3634 | .ofpacts_len = ctx->action_set.size, | |
3635 | .ofpacts = ctx->action_set.data, | |
3636 | }; | |
3637 | ||
fbf5d6ec JR |
3638 | /* Allocate a unique recirc id for the given metadata state in the |
3639 | * flow. An existing id, with a new reference to the corresponding | |
3640 | * recirculation context, will be returned if possible. | |
3641 | * The life-cycle of this recirc id is managed by associating it | |
3642 | * with the udpif key ('ukey') created for each new datapath flow. */ | |
3643 | id = recirc_alloc_id_ctx(&state); | |
3644 | if (!id) { | |
3645 | XLATE_REPORT_ERROR(ctx, "Failed to allocate recirculation id"); | |
3646 | ctx->error = XLATE_NO_RECIRCULATION_CONTEXT; | |
3647 | return; | |
7bbdd84f | 3648 | } |
fbf5d6ec | 3649 | recirc_refs_add(&ctx->xout->recircs, id); |
7bbdd84f | 3650 | |
1520ef4f | 3651 | nl_msg_put_u32(ctx->odp_actions, OVS_ACTION_ATTR_RECIRC, id); |
e672ff9b JR |
3652 | |
3653 | /* Undo changes done by recirculation. */ | |
3654 | ctx->action_set.size = ctx->recirc_action_offset; | |
3655 | ctx->recirc_action_offset = -1; | |
3656 | ctx->last_unroll_offset = -1; | |
7bbdd84f SH |
3657 | } |
3658 | ||
07659514 JS |
3659 | /* Called only when ctx->recirc_action_offset is set. */ |
3660 | static void | |
3661 | compose_recirculate_action(struct xlate_ctx *ctx) | |
3662 | { | |
3663 | xlate_commit_actions(ctx); | |
3664 | compose_recirculate_action__(ctx, 0); | |
3665 | } | |
3666 | ||
e37b8437 JS |
3667 | /* Fork the pipeline here. The current packet will continue processing the |
3668 | * current action list. A clone of the current packet will recirculate, skip | |
3669 | * the remainder of the current action list and asynchronously resume pipeline | |
3670 | * processing in 'table' with the current metadata and action set. */ | |
3671 | static void | |
3672 | compose_recirculate_and_fork(struct xlate_ctx *ctx, uint8_t table) | |
3673 | { | |
3674 | ctx->recirc_action_offset = ctx->action_set.size; | |
3675 | compose_recirculate_action__(ctx, table); | |
3676 | } | |
3677 | ||
8bfd0fda BP |
3678 | static void |
3679 | compose_mpls_push_action(struct xlate_ctx *ctx, struct ofpact_push_mpls *mpls) | |
9583bc14 | 3680 | { |
33bf9176 | 3681 | struct flow *flow = &ctx->xin->flow; |
8bfd0fda | 3682 | int n; |
33bf9176 | 3683 | |
8bfd0fda | 3684 | ovs_assert(eth_type_mpls(mpls->ethertype)); |
b0a17866 | 3685 | |
49a73e0c | 3686 | n = flow_count_mpls_labels(flow, ctx->wc); |
8bfd0fda | 3687 | if (!n) { |
704bb0bf | 3688 | xlate_commit_actions(ctx); |
8bfd0fda BP |
3689 | } else if (n >= FLOW_MAX_MPLS_LABELS) { |
3690 | if (ctx->xin->packet != NULL) { | |
fff1b9c0 | 3691 | XLATE_REPORT_ERROR(ctx, "bridge %s: dropping packet on which an " |
8bfd0fda BP |
3692 | "MPLS push action can't be performed as it would " |
3693 | "have more MPLS LSEs than the %d supported.", | |
3694 | ctx->xbridge->name, FLOW_MAX_MPLS_LABELS); | |
9583bc14 | 3695 | } |
fff1b9c0 | 3696 | ctx->error = XLATE_TOO_MANY_MPLS_LABELS; |
8bfd0fda | 3697 | return; |
9583bc14 | 3698 | } |
b0a17866 | 3699 | |
49a73e0c | 3700 | flow_push_mpls(flow, n, mpls->ethertype, ctx->wc); |
9583bc14 EJ |
3701 | } |
3702 | ||
8bfd0fda | 3703 | static void |
9cfef3d0 | 3704 | compose_mpls_pop_action(struct xlate_ctx *ctx, ovs_be16 eth_type) |
9583bc14 | 3705 | { |
8bfd0fda | 3706 | struct flow *flow = &ctx->xin->flow; |
49a73e0c | 3707 | int n = flow_count_mpls_labels(flow, ctx->wc); |
33bf9176 | 3708 | |
49a73e0c | 3709 | if (flow_pop_mpls(flow, n, eth_type, ctx->wc)) { |
2494ccd7 | 3710 | if (ctx->xbridge->support.odp.recirc) { |
7bbdd84f SH |
3711 | ctx->was_mpls = true; |
3712 | } | |
3713 | } else if (n >= FLOW_MAX_MPLS_LABELS) { | |
8bfd0fda | 3714 | if (ctx->xin->packet != NULL) { |
fff1b9c0 | 3715 | XLATE_REPORT_ERROR(ctx, "bridge %s: dropping packet on which an " |
8bfd0fda BP |
3716 | "MPLS pop action can't be performed as it has " |
3717 | "more MPLS LSEs than the %d supported.", | |
3718 | ctx->xbridge->name, FLOW_MAX_MPLS_LABELS); | |
3719 | } | |
fff1b9c0 | 3720 | ctx->error = XLATE_TOO_MANY_MPLS_LABELS; |
1520ef4f | 3721 | ofpbuf_clear(ctx->odp_actions); |
9583bc14 EJ |
3722 | } |
3723 | } | |
3724 | ||
3725 | static bool | |
3726 | compose_dec_ttl(struct xlate_ctx *ctx, struct ofpact_cnt_ids *ids) | |
3727 | { | |
33bf9176 BP |
3728 | struct flow *flow = &ctx->xin->flow; |
3729 | ||
3730 | if (!is_ip_any(flow)) { | |
9583bc14 EJ |
3731 | return false; |
3732 | } | |
3733 | ||
49a73e0c | 3734 | ctx->wc->masks.nw_ttl = 0xff; |
33bf9176 BP |
3735 | if (flow->nw_ttl > 1) { |
3736 | flow->nw_ttl--; | |
9583bc14 EJ |
3737 | return false; |
3738 | } else { | |
3739 | size_t i; | |
3740 | ||
3741 | for (i = 0; i < ids->n_controllers; i++) { | |
3742 | execute_controller_action(ctx, UINT16_MAX, OFPR_INVALID_TTL, | |
3743 | ids->cnt_ids[i]); | |
3744 | } | |
3745 | ||
3746 | /* Stop processing for current table. */ | |
3747 | return true; | |
3748 | } | |
3749 | } | |
3750 | ||
8bfd0fda | 3751 | static void |
097d4939 JR |
3752 | compose_set_mpls_label_action(struct xlate_ctx *ctx, ovs_be32 label) |
3753 | { | |
8bfd0fda | 3754 | if (eth_type_mpls(ctx->xin->flow.dl_type)) { |
49a73e0c | 3755 | ctx->wc->masks.mpls_lse[0] |= htonl(MPLS_LABEL_MASK); |
8bfd0fda | 3756 | set_mpls_lse_label(&ctx->xin->flow.mpls_lse[0], label); |
097d4939 | 3757 | } |
097d4939 JR |
3758 | } |
3759 | ||
8bfd0fda | 3760 | static void |
097d4939 JR |
3761 | compose_set_mpls_tc_action(struct xlate_ctx *ctx, uint8_t tc) |
3762 | { | |
8bfd0fda | 3763 | if (eth_type_mpls(ctx->xin->flow.dl_type)) { |
49a73e0c | 3764 | ctx->wc->masks.mpls_lse[0] |= htonl(MPLS_TC_MASK); |
8bfd0fda | 3765 | set_mpls_lse_tc(&ctx->xin->flow.mpls_lse[0], tc); |
097d4939 | 3766 | } |
097d4939 JR |
3767 | } |
3768 | ||
8bfd0fda | 3769 | static void |
9cfef3d0 | 3770 | compose_set_mpls_ttl_action(struct xlate_ctx *ctx, uint8_t ttl) |
9583bc14 | 3771 | { |
8bfd0fda | 3772 | if (eth_type_mpls(ctx->xin->flow.dl_type)) { |
49a73e0c | 3773 | ctx->wc->masks.mpls_lse[0] |= htonl(MPLS_TTL_MASK); |
8bfd0fda | 3774 | set_mpls_lse_ttl(&ctx->xin->flow.mpls_lse[0], ttl); |
b0a17866 | 3775 | } |
9583bc14 EJ |
3776 | } |
3777 | ||
3778 | static bool | |
9cfef3d0 | 3779 | compose_dec_mpls_ttl_action(struct xlate_ctx *ctx) |
9583bc14 | 3780 | { |
33bf9176 | 3781 | struct flow *flow = &ctx->xin->flow; |
1dd35f8a | 3782 | |
8bfd0fda | 3783 | if (eth_type_mpls(flow->dl_type)) { |
22d38fca JR |
3784 | uint8_t ttl = mpls_lse_to_ttl(flow->mpls_lse[0]); |
3785 | ||
49a73e0c | 3786 | ctx->wc->masks.mpls_lse[0] |= htonl(MPLS_TTL_MASK); |
8bfd0fda BP |
3787 | if (ttl > 1) { |
3788 | ttl--; | |
3789 | set_mpls_lse_ttl(&flow->mpls_lse[0], ttl); | |
3790 | return false; | |
3791 | } else { | |
3792 | execute_controller_action(ctx, UINT16_MAX, OFPR_INVALID_TTL, 0); | |
8bfd0fda | 3793 | } |
9583bc14 | 3794 | } |
22d38fca JR |
3795 | |
3796 | /* Stop processing for current table. */ | |
3797 | return true; | |
9583bc14 EJ |
3798 | } |
3799 | ||
3800 | static void | |
3801 | xlate_output_action(struct xlate_ctx *ctx, | |
4e022ec0 | 3802 | ofp_port_t port, uint16_t max_len, bool may_packet_in) |
9583bc14 | 3803 | { |
2031ef97 | 3804 | ofp_port_t prev_nf_output_iface = ctx->nf_output_iface; |
9583bc14 | 3805 | |
2031ef97 | 3806 | ctx->nf_output_iface = NF_OUT_DROP; |
9583bc14 EJ |
3807 | |
3808 | switch (port) { | |
3809 | case OFPP_IN_PORT: | |
e93ef1c7 | 3810 | compose_output_action(ctx, ctx->xin->flow.in_port.ofp_port, NULL); |
9583bc14 EJ |
3811 | break; |
3812 | case OFPP_TABLE: | |
4e022ec0 | 3813 | xlate_table_action(ctx, ctx->xin->flow.in_port.ofp_port, |
6d328fa2 | 3814 | 0, may_packet_in, true); |
9583bc14 EJ |
3815 | break; |
3816 | case OFPP_NORMAL: | |
3817 | xlate_normal(ctx); | |
3818 | break; | |
3819 | case OFPP_FLOOD: | |
3820 | flood_packets(ctx, false); | |
3821 | break; | |
3822 | case OFPP_ALL: | |
3823 | flood_packets(ctx, true); | |
3824 | break; | |
3825 | case OFPP_CONTROLLER: | |
3a11fd5b | 3826 | execute_controller_action(ctx, max_len, |
029ca940 SS |
3827 | (ctx->in_group ? OFPR_GROUP |
3828 | : ctx->in_action_set ? OFPR_ACTION_SET | |
3829 | : OFPR_ACTION), | |
3830 | 0); | |
9583bc14 EJ |
3831 | break; |
3832 | case OFPP_NONE: | |
3833 | break; | |
3834 | case OFPP_LOCAL: | |
3835 | default: | |
4e022ec0 | 3836 | if (port != ctx->xin->flow.in_port.ofp_port) { |
e93ef1c7 | 3837 | compose_output_action(ctx, port, NULL); |
9583bc14 EJ |
3838 | } else { |
3839 | xlate_report(ctx, "skipping output to input port"); | |
3840 | } | |
3841 | break; | |
3842 | } | |
3843 | ||
3844 | if (prev_nf_output_iface == NF_OUT_FLOOD) { | |
2031ef97 BP |
3845 | ctx->nf_output_iface = NF_OUT_FLOOD; |
3846 | } else if (ctx->nf_output_iface == NF_OUT_DROP) { | |
3847 | ctx->nf_output_iface = prev_nf_output_iface; | |
9583bc14 | 3848 | } else if (prev_nf_output_iface != NF_OUT_DROP && |
2031ef97 BP |
3849 | ctx->nf_output_iface != NF_OUT_FLOOD) { |
3850 | ctx->nf_output_iface = NF_OUT_MULTI; | |
9583bc14 EJ |
3851 | } |
3852 | } | |
3853 | ||
3854 | static void | |
3855 | xlate_output_reg_action(struct xlate_ctx *ctx, | |
3856 | const struct ofpact_output_reg *or) | |
3857 | { | |
3858 | uint64_t port = mf_get_subfield(&or->src, &ctx->xin->flow); | |
3859 | if (port <= UINT16_MAX) { | |
3860 | union mf_subvalue value; | |
3861 | ||
3862 | memset(&value, 0xff, sizeof value); | |
49a73e0c | 3863 | mf_write_subfield_flow(&or->src, &value, &ctx->wc->masks); |
4e022ec0 AW |
3864 | xlate_output_action(ctx, u16_to_ofp(port), |
3865 | or->max_len, false); | |
9583bc14 EJ |
3866 | } |
3867 | } | |
3868 | ||
3869 | static void | |
3870 | xlate_enqueue_action(struct xlate_ctx *ctx, | |
3871 | const struct ofpact_enqueue *enqueue) | |
3872 | { | |
4e022ec0 | 3873 | ofp_port_t ofp_port = enqueue->port; |
9583bc14 EJ |
3874 | uint32_t queue_id = enqueue->queue; |
3875 | uint32_t flow_priority, priority; | |
3876 | int error; | |
3877 | ||
3878 | /* Translate queue to priority. */ | |
89a8a7f0 | 3879 | error = dpif_queue_to_priority(ctx->xbridge->dpif, queue_id, &priority); |
9583bc14 EJ |
3880 | if (error) { |
3881 | /* Fall back to ordinary output action. */ | |
3882 | xlate_output_action(ctx, enqueue->port, 0, false); | |
3883 | return; | |
3884 | } | |
3885 | ||
3886 | /* Check output port. */ | |
3887 | if (ofp_port == OFPP_IN_PORT) { | |
4e022ec0 AW |
3888 | ofp_port = ctx->xin->flow.in_port.ofp_port; |
3889 | } else if (ofp_port == ctx->xin->flow.in_port.ofp_port) { | |
9583bc14 EJ |
3890 | return; |
3891 | } | |
3892 | ||
3893 | /* Add datapath actions. */ | |
3894 | flow_priority = ctx->xin->flow.skb_priority; | |
3895 | ctx->xin->flow.skb_priority = priority; | |
e93ef1c7 | 3896 | compose_output_action(ctx, ofp_port, NULL); |
9583bc14 EJ |
3897 | ctx->xin->flow.skb_priority = flow_priority; |
3898 | ||
3899 | /* Update NetFlow output port. */ | |
2031ef97 BP |
3900 | if (ctx->nf_output_iface == NF_OUT_DROP) { |
3901 | ctx->nf_output_iface = ofp_port; | |
3902 | } else if (ctx->nf_output_iface != NF_OUT_FLOOD) { | |
3903 | ctx->nf_output_iface = NF_OUT_MULTI; | |
9583bc14 EJ |
3904 | } |
3905 | } | |
3906 | ||
3907 | static void | |
3908 | xlate_set_queue_action(struct xlate_ctx *ctx, uint32_t queue_id) | |
3909 | { | |
3910 | uint32_t skb_priority; | |
3911 | ||
89a8a7f0 | 3912 | if (!dpif_queue_to_priority(ctx->xbridge->dpif, queue_id, &skb_priority)) { |
9583bc14 EJ |
3913 | ctx->xin->flow.skb_priority = skb_priority; |
3914 | } else { | |
3915 | /* Couldn't translate queue to a priority. Nothing to do. A warning | |
3916 | * has already been logged. */ | |
3917 | } | |
3918 | } | |
3919 | ||
3920 | static bool | |
46c88433 | 3921 | slave_enabled_cb(ofp_port_t ofp_port, void *xbridge_) |
9583bc14 | 3922 | { |
46c88433 EJ |
3923 | const struct xbridge *xbridge = xbridge_; |
3924 | struct xport *port; | |
9583bc14 EJ |
3925 | |
3926 | switch (ofp_port) { | |
3927 | case OFPP_IN_PORT: | |
3928 | case OFPP_TABLE: | |
3929 | case OFPP_NORMAL: | |
3930 | case OFPP_FLOOD: | |
3931 | case OFPP_ALL: | |
3932 | case OFPP_NONE: | |
3933 | return true; | |
3934 | case OFPP_CONTROLLER: /* Not supported by the bundle action. */ | |
3935 | return false; | |
3936 | default: | |
46c88433 | 3937 | port = get_ofp_port(xbridge, ofp_port); |
9583bc14 EJ |
3938 | return port ? port->may_enable : false; |
3939 | } | |
3940 | } | |
3941 | ||
3942 | static void | |
3943 | xlate_bundle_action(struct xlate_ctx *ctx, | |
3944 | const struct ofpact_bundle *bundle) | |
3945 | { | |
4e022ec0 | 3946 | ofp_port_t port; |
9583bc14 | 3947 | |
49a73e0c | 3948 | port = bundle_execute(bundle, &ctx->xin->flow, ctx->wc, slave_enabled_cb, |
46c88433 | 3949 | CONST_CAST(struct xbridge *, ctx->xbridge)); |
9583bc14 | 3950 | if (bundle->dst.field) { |
49a73e0c | 3951 | nxm_reg_load(&bundle->dst, ofp_to_u16(port), &ctx->xin->flow, ctx->wc); |
9583bc14 EJ |
3952 | } else { |
3953 | xlate_output_action(ctx, port, 0, false); | |
3954 | } | |
3955 | } | |
3956 | ||
3957 | static void | |
4165b5e0 JS |
3958 | xlate_learn_action__(struct xlate_ctx *ctx, const struct ofpact_learn *learn, |
3959 | struct ofputil_flow_mod *fm, struct ofpbuf *ofpacts) | |
9583bc14 | 3960 | { |
4165b5e0 JS |
3961 | learn_execute(learn, &ctx->xin->flow, fm, ofpacts); |
3962 | if (ctx->xin->may_learn) { | |
3963 | ofproto_dpif_flow_mod(ctx->xbridge->ofproto, fm); | |
3964 | } | |
3965 | } | |
9583bc14 | 3966 | |
4165b5e0 JS |
3967 | static void |
3968 | xlate_learn_action(struct xlate_ctx *ctx, const struct ofpact_learn *learn) | |
3969 | { | |
49a73e0c | 3970 | learn_mask(learn, ctx->wc); |
9583bc14 | 3971 | |
b256dc52 JS |
3972 | if (ctx->xin->xcache) { |
3973 | struct xc_entry *entry; | |
3974 | ||
3975 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_LEARN); | |
4165b5e0 JS |
3976 | entry->u.learn.ofproto = ctx->xbridge->ofproto; |
3977 | entry->u.learn.fm = xmalloc(sizeof *entry->u.learn.fm); | |
3978 | entry->u.learn.ofpacts = ofpbuf_new(64); | |
3979 | xlate_learn_action__(ctx, learn, entry->u.learn.fm, | |
3980 | entry->u.learn.ofpacts); | |
3981 | } else if (ctx->xin->may_learn) { | |
3982 | uint64_t ofpacts_stub[1024 / 8]; | |
3983 | struct ofputil_flow_mod fm; | |
3984 | struct ofpbuf ofpacts; | |
3985 | ||
3986 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); | |
3987 | xlate_learn_action__(ctx, learn, &fm, &ofpacts); | |
3988 | ofpbuf_uninit(&ofpacts); | |
b256dc52 JS |
3989 | } |
3990 | } | |
3991 | ||
3992 | static void | |
3993 | xlate_fin_timeout__(struct rule_dpif *rule, uint16_t tcp_flags, | |
3994 | uint16_t idle_timeout, uint16_t hard_timeout) | |
3995 | { | |
3996 | if (tcp_flags & (TCP_FIN | TCP_RST)) { | |
3997 | rule_dpif_reduce_timeouts(rule, idle_timeout, hard_timeout); | |
3998 | } | |
9583bc14 EJ |
3999 | } |
4000 | ||
9583bc14 EJ |
4001 | static void |
4002 | xlate_fin_timeout(struct xlate_ctx *ctx, | |
4003 | const struct ofpact_fin_timeout *oft) | |
4004 | { | |
b256dc52 JS |
4005 | if (ctx->rule) { |
4006 | xlate_fin_timeout__(ctx->rule, ctx->xin->tcp_flags, | |
4007 | oft->fin_idle_timeout, oft->fin_hard_timeout); | |
4008 | if (ctx->xin->xcache) { | |
4009 | struct xc_entry *entry; | |
4010 | ||
4011 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_FIN_TIMEOUT); | |
83709dfa JR |
4012 | /* XC_RULE already holds a reference on the rule, none is taken |
4013 | * here. */ | |
b256dc52 JS |
4014 | entry->u.fin.rule = ctx->rule; |
4015 | entry->u.fin.idle = oft->fin_idle_timeout; | |
4016 | entry->u.fin.hard = oft->fin_hard_timeout; | |
b256dc52 | 4017 | } |
9583bc14 EJ |
4018 | } |
4019 | } | |
4020 | ||
4021 | static void | |
4022 | xlate_sample_action(struct xlate_ctx *ctx, | |
4023 | const struct ofpact_sample *os) | |
4024 | { | |
e824d78d JR |
4025 | /* Scale the probability from 16-bit to 32-bit while representing |
4026 | * the same percentage. */ | |
4027 | uint32_t probability = (os->probability << 16) | os->probability; | |
4028 | ||
b440dd8c | 4029 | if (!ctx->xbridge->support.variable_length_userdata) { |
e824d78d JR |
4030 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); |
4031 | ||
4032 | VLOG_ERR_RL(&rl, "ignoring NXAST_SAMPLE action because datapath " | |
4033 | "lacks support (needs Linux 3.10+ or kernel module from " | |
4034 | "OVS 1.11+)"); | |
4035 | return; | |
4036 | } | |
4037 | ||
704bb0bf | 4038 | xlate_commit_actions(ctx); |
e824d78d | 4039 | |
a6092018 BP |
4040 | union user_action_cookie cookie = { |
4041 | .flow_sample = { | |
4042 | .type = USER_ACTION_COOKIE_FLOW_SAMPLE, | |
4043 | .probability = os->probability, | |
4044 | .collector_set_id = os->collector_set_id, | |
4045 | .obs_domain_id = os->obs_domain_id, | |
4046 | .obs_point_id = os->obs_point_id, | |
4047 | } | |
4048 | }; | |
4049 | compose_sample_action(ctx, probability, &cookie, sizeof cookie.flow_sample, | |
4050 | ODPP_NONE, false); | |
9583bc14 EJ |
4051 | } |
4052 | ||
4053 | static bool | |
46c88433 | 4054 | may_receive(const struct xport *xport, struct xlate_ctx *ctx) |
9583bc14 | 4055 | { |
bbbca389 | 4056 | if (xport->config & (is_stp(&ctx->xin->flow) |
46c88433 EJ |
4057 | ? OFPUTIL_PC_NO_RECV_STP |
4058 | : OFPUTIL_PC_NO_RECV)) { | |
9583bc14 EJ |
4059 | return false; |
4060 | } | |
4061 | ||
4062 | /* Only drop packets here if both forwarding and learning are | |
4063 | * disabled. If just learning is enabled, we need to have | |
4064 | * OFPP_NORMAL and the learning action have a look at the packet | |
4065 | * before we can drop it. */ | |
9efd308e DV |
4066 | if ((!xport_stp_forward_state(xport) && !xport_stp_learn_state(xport)) || |
4067 | (!xport_rstp_forward_state(xport) && !xport_rstp_learn_state(xport))) { | |
9583bc14 EJ |
4068 | return false; |
4069 | } | |
4070 | ||
4071 | return true; | |
4072 | } | |
4073 | ||
7fdb60a7 SH |
4074 | static void |
4075 | xlate_write_actions(struct xlate_ctx *ctx, const struct ofpact *a) | |
4076 | { | |
c61f3870 BP |
4077 | const struct ofpact_nest *on = ofpact_get_WRITE_ACTIONS(a); |
4078 | size_t on_len = ofpact_nest_get_action_len(on); | |
4079 | const struct ofpact *inner; | |
4080 | ||
4081 | /* Maintain actset_output depending on the contents of the action set: | |
4082 | * | |
4083 | * - OFPP_UNSET, if there is no "output" action. | |
4084 | * | |
4085 | * - The output port, if there is an "output" action and no "group" | |
4086 | * action. | |
4087 | * | |
4088 | * - OFPP_UNSET, if there is a "group" action. | |
4089 | */ | |
4090 | if (!ctx->action_set_has_group) { | |
4091 | OFPACT_FOR_EACH (inner, on->actions, on_len) { | |
4092 | if (inner->type == OFPACT_OUTPUT) { | |
4093 | ctx->xin->flow.actset_output = ofpact_get_OUTPUT(inner)->port; | |
4094 | } else if (inner->type == OFPACT_GROUP) { | |
4095 | ctx->xin->flow.actset_output = OFPP_UNSET; | |
4096 | ctx->action_set_has_group = true; | |
9055ca9a | 4097 | break; |
c61f3870 BP |
4098 | } |
4099 | } | |
4100 | } | |
4101 | ||
4102 | ofpbuf_put(&ctx->action_set, on->actions, on_len); | |
7fdb60a7 SH |
4103 | } |
4104 | ||
4105 | static void | |
4106 | xlate_action_set(struct xlate_ctx *ctx) | |
4107 | { | |
4108 | uint64_t action_list_stub[1024 / 64]; | |
4109 | struct ofpbuf action_list; | |
4110 | ||
029ca940 | 4111 | ctx->in_action_set = true; |
7fdb60a7 SH |
4112 | ofpbuf_use_stub(&action_list, action_list_stub, sizeof action_list_stub); |
4113 | ofpacts_execute_action_set(&action_list, &ctx->action_set); | |
ed9c9e3e JR |
4114 | /* Clear the action set, as it is not needed any more. */ |
4115 | ofpbuf_clear(&ctx->action_set); | |
6fd6ed71 | 4116 | do_xlate_actions(action_list.data, action_list.size, ctx); |
029ca940 | 4117 | ctx->in_action_set = false; |
7fdb60a7 SH |
4118 | ofpbuf_uninit(&action_list); |
4119 | } | |
4120 | ||
e672ff9b JR |
4121 | static void |
4122 | recirc_put_unroll_xlate(struct xlate_ctx *ctx) | |
4123 | { | |
4124 | struct ofpact_unroll_xlate *unroll; | |
4125 | ||
4126 | unroll = ctx->last_unroll_offset < 0 | |
4127 | ? NULL | |
4128 | : ALIGNED_CAST(struct ofpact_unroll_xlate *, | |
4129 | (char *)ctx->action_set.data + ctx->last_unroll_offset); | |
4130 | ||
4131 | /* Restore the table_id and rule cookie for a potential PACKET | |
4132 | * IN if needed. */ | |
4133 | if (!unroll || | |
4134 | (ctx->table_id != unroll->rule_table_id | |
4135 | || ctx->rule_cookie != unroll->rule_cookie)) { | |
4136 | ||
4137 | ctx->last_unroll_offset = ctx->action_set.size; | |
4138 | unroll = ofpact_put_UNROLL_XLATE(&ctx->action_set); | |
4139 | unroll->rule_table_id = ctx->table_id; | |
4140 | unroll->rule_cookie = ctx->rule_cookie; | |
4141 | } | |
4142 | } | |
4143 | ||
4144 | ||
4145 | /* Copy remaining actions to the action_set to be executed after recirculation. | |
4146 | * UNROLL_XLATE action is inserted, if not already done so, before actions that | |
a2b53dec BP |
4147 | * may generate asynchronous messages from the current table and without |
4148 | * matching another rule. */ | |
e672ff9b JR |
4149 | static void |
4150 | recirc_unroll_actions(const struct ofpact *ofpacts, size_t ofpacts_len, | |
4151 | struct xlate_ctx *ctx) | |
4152 | { | |
4153 | const struct ofpact *a; | |
4154 | ||
4155 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
4156 | switch (a->type) { | |
a2b53dec | 4157 | /* May generate asynchronous messages. */ |
e672ff9b JR |
4158 | case OFPACT_OUTPUT_REG: |
4159 | case OFPACT_GROUP: | |
4160 | case OFPACT_OUTPUT: | |
4161 | case OFPACT_CONTROLLER: | |
4162 | case OFPACT_DEC_MPLS_TTL: | |
4163 | case OFPACT_DEC_TTL: | |
4164 | recirc_put_unroll_xlate(ctx); | |
4165 | break; | |
4166 | ||
4167 | /* These may not generate PACKET INs. */ | |
4168 | case OFPACT_SET_TUNNEL: | |
4169 | case OFPACT_REG_MOVE: | |
4170 | case OFPACT_SET_FIELD: | |
4171 | case OFPACT_STACK_PUSH: | |
4172 | case OFPACT_STACK_POP: | |
4173 | case OFPACT_LEARN: | |
4174 | case OFPACT_WRITE_METADATA: | |
4175 | case OFPACT_RESUBMIT: /* May indirectly generate PACKET INs, */ | |
4176 | case OFPACT_GOTO_TABLE: /* but from a different table and rule. */ | |
4177 | case OFPACT_ENQUEUE: | |
4178 | case OFPACT_SET_VLAN_VID: | |
4179 | case OFPACT_SET_VLAN_PCP: | |
4180 | case OFPACT_STRIP_VLAN: | |
4181 | case OFPACT_PUSH_VLAN: | |
4182 | case OFPACT_SET_ETH_SRC: | |
4183 | case OFPACT_SET_ETH_DST: | |
4184 | case OFPACT_SET_IPV4_SRC: | |
4185 | case OFPACT_SET_IPV4_DST: | |
4186 | case OFPACT_SET_IP_DSCP: | |
4187 | case OFPACT_SET_IP_ECN: | |
4188 | case OFPACT_SET_IP_TTL: | |
4189 | case OFPACT_SET_L4_SRC_PORT: | |
4190 | case OFPACT_SET_L4_DST_PORT: | |
4191 | case OFPACT_SET_QUEUE: | |
4192 | case OFPACT_POP_QUEUE: | |
4193 | case OFPACT_PUSH_MPLS: | |
4194 | case OFPACT_POP_MPLS: | |
4195 | case OFPACT_SET_MPLS_LABEL: | |
4196 | case OFPACT_SET_MPLS_TC: | |
4197 | case OFPACT_SET_MPLS_TTL: | |
4198 | case OFPACT_MULTIPATH: | |
4199 | case OFPACT_BUNDLE: | |
4200 | case OFPACT_EXIT: | |
4201 | case OFPACT_UNROLL_XLATE: | |
4202 | case OFPACT_FIN_TIMEOUT: | |
4203 | case OFPACT_CLEAR_ACTIONS: | |
4204 | case OFPACT_WRITE_ACTIONS: | |
4205 | case OFPACT_METER: | |
4206 | case OFPACT_SAMPLE: | |
d4abaff5 | 4207 | case OFPACT_DEBUG_RECIRC: |
07659514 | 4208 | case OFPACT_CT: |
9ac0aada | 4209 | case OFPACT_NAT: |
e672ff9b JR |
4210 | break; |
4211 | ||
4212 | /* These need not be copied for restoration. */ | |
4213 | case OFPACT_NOTE: | |
4214 | case OFPACT_CONJUNCTION: | |
4215 | continue; | |
4216 | } | |
4217 | /* Copy the action over. */ | |
4218 | ofpbuf_put(&ctx->action_set, a, OFPACT_ALIGN(a->len)); | |
4219 | } | |
4220 | } | |
4221 | ||
1d741d6d JR |
4222 | #define CHECK_MPLS_RECIRCULATION() \ |
4223 | if (ctx->was_mpls) { \ | |
4224 | ctx_trigger_recirculation(ctx); \ | |
4225 | break; \ | |
4226 | } | |
4227 | #define CHECK_MPLS_RECIRCULATION_IF(COND) \ | |
4228 | if (COND) { \ | |
4229 | CHECK_MPLS_RECIRCULATION(); \ | |
4230 | } | |
4231 | ||
8e53fe8c JS |
4232 | static void |
4233 | put_ct_mark(const struct flow *flow, struct flow *base_flow, | |
4234 | struct ofpbuf *odp_actions, struct flow_wildcards *wc) | |
4235 | { | |
4236 | struct { | |
4237 | uint32_t key; | |
4238 | uint32_t mask; | |
4239 | } odp_attr; | |
4240 | ||
4241 | odp_attr.key = flow->ct_mark; | |
4242 | odp_attr.mask = wc->masks.ct_mark; | |
4243 | ||
4244 | if (odp_attr.mask && odp_attr.key != base_flow->ct_mark) { | |
4245 | nl_msg_put_unspec(odp_actions, OVS_CT_ATTR_MARK, &odp_attr, | |
4246 | sizeof(odp_attr)); | |
4247 | } | |
4248 | } | |
4249 | ||
9daf2348 JS |
4250 | static void |
4251 | put_ct_label(const struct flow *flow, struct flow *base_flow, | |
4252 | struct ofpbuf *odp_actions, struct flow_wildcards *wc) | |
4253 | { | |
4254 | if (!ovs_u128_is_zero(&wc->masks.ct_label) | |
4255 | && !ovs_u128_equals(&flow->ct_label, &base_flow->ct_label)) { | |
4256 | struct { | |
4257 | ovs_u128 key; | |
4258 | ovs_u128 mask; | |
4259 | } *odp_ct_label; | |
4260 | ||
4261 | odp_ct_label = nl_msg_put_unspec_uninit(odp_actions, | |
4262 | OVS_CT_ATTR_LABELS, | |
4263 | sizeof(*odp_ct_label)); | |
4264 | odp_ct_label->key = flow->ct_label; | |
4265 | odp_ct_label->mask = wc->masks.ct_label; | |
4266 | } | |
4267 | } | |
4268 | ||
d787ad39 JS |
4269 | static void |
4270 | put_ct_helper(struct ofpbuf *odp_actions, struct ofpact_conntrack *ofc) | |
4271 | { | |
4272 | if (ofc->alg) { | |
4273 | if (ofc->alg == IPPORT_FTP) { | |
4274 | nl_msg_put_string(odp_actions, OVS_CT_ATTR_HELPER, "ftp"); | |
4275 | } else { | |
4276 | VLOG_WARN("Cannot serialize ct_helper %d\n", ofc->alg); | |
4277 | } | |
4278 | } | |
4279 | } | |
4280 | ||
9ac0aada JR |
4281 | static void |
4282 | put_ct_nat(struct xlate_ctx *ctx) | |
4283 | { | |
4284 | struct ofpact_nat *ofn = ctx->ct_nat_action; | |
4285 | size_t nat_offset; | |
4286 | ||
4287 | if (!ofn) { | |
4288 | return; | |
4289 | } | |
4290 | ||
4291 | nat_offset = nl_msg_start_nested(ctx->odp_actions, OVS_CT_ATTR_NAT); | |
4292 | if (ofn->flags & NX_NAT_F_SRC || ofn->flags & NX_NAT_F_DST) { | |
4293 | nl_msg_put_flag(ctx->odp_actions, ofn->flags & NX_NAT_F_SRC | |
4294 | ? OVS_NAT_ATTR_SRC : OVS_NAT_ATTR_DST); | |
4295 | if (ofn->flags & NX_NAT_F_PERSISTENT) { | |
4296 | nl_msg_put_flag(ctx->odp_actions, OVS_NAT_ATTR_PERSISTENT); | |
4297 | } | |
4298 | if (ofn->flags & NX_NAT_F_PROTO_HASH) { | |
4299 | nl_msg_put_flag(ctx->odp_actions, OVS_NAT_ATTR_PROTO_HASH); | |
4300 | } else if (ofn->flags & NX_NAT_F_PROTO_RANDOM) { | |
4301 | nl_msg_put_flag(ctx->odp_actions, OVS_NAT_ATTR_PROTO_RANDOM); | |
4302 | } | |
4303 | if (ofn->range_af == AF_INET) { | |
73e8bc23 | 4304 | nl_msg_put_be32(ctx->odp_actions, OVS_NAT_ATTR_IP_MIN, |
9ac0aada JR |
4305 | ofn->range.addr.ipv4.min); |
4306 | if (ofn->range.addr.ipv4.max && | |
73e8bc23 BP |
4307 | (ntohl(ofn->range.addr.ipv4.max) |
4308 | > ntohl(ofn->range.addr.ipv4.min))) { | |
4309 | nl_msg_put_be32(ctx->odp_actions, OVS_NAT_ATTR_IP_MAX, | |
4310 | ofn->range.addr.ipv4.max); | |
9ac0aada JR |
4311 | } |
4312 | } else if (ofn->range_af == AF_INET6) { | |
4313 | nl_msg_put_unspec(ctx->odp_actions, OVS_NAT_ATTR_IP_MIN, | |
4314 | &ofn->range.addr.ipv6.min, | |
4315 | sizeof ofn->range.addr.ipv6.min); | |
4316 | if (!ipv6_mask_is_any(&ofn->range.addr.ipv6.max) && | |
4317 | memcmp(&ofn->range.addr.ipv6.max, &ofn->range.addr.ipv6.min, | |
4318 | sizeof ofn->range.addr.ipv6.max) > 0) { | |
4319 | nl_msg_put_unspec(ctx->odp_actions, OVS_NAT_ATTR_IP_MAX, | |
4320 | &ofn->range.addr.ipv6.max, | |
4321 | sizeof ofn->range.addr.ipv6.max); | |
4322 | } | |
4323 | } | |
4324 | if (ofn->range_af != AF_UNSPEC && ofn->range.proto.min) { | |
4325 | nl_msg_put_u16(ctx->odp_actions, OVS_NAT_ATTR_PROTO_MIN, | |
4326 | ofn->range.proto.min); | |
4327 | if (ofn->range.proto.max && | |
4328 | ofn->range.proto.max > ofn->range.proto.min) { | |
4329 | nl_msg_put_u16(ctx->odp_actions, OVS_NAT_ATTR_PROTO_MAX, | |
4330 | ofn->range.proto.max); | |
4331 | } | |
4332 | } | |
4333 | } | |
4334 | nl_msg_end_nested(ctx->odp_actions, nat_offset); | |
4335 | } | |
4336 | ||
07659514 JS |
4337 | static void |
4338 | compose_conntrack_action(struct xlate_ctx *ctx, struct ofpact_conntrack *ofc) | |
4339 | { | |
9daf2348 | 4340 | ovs_u128 old_ct_label = ctx->base_flow.ct_label; |
8e53fe8c | 4341 | uint32_t old_ct_mark = ctx->base_flow.ct_mark; |
07659514 JS |
4342 | size_t ct_offset; |
4343 | uint16_t zone; | |
4344 | ||
4345 | /* Ensure that any prior actions are applied before composing the new | |
4346 | * conntrack action. */ | |
4347 | xlate_commit_actions(ctx); | |
4348 | ||
8e53fe8c | 4349 | /* Process nested actions first, to populate the key. */ |
9ac0aada | 4350 | ctx->ct_nat_action = NULL; |
8e53fe8c JS |
4351 | do_xlate_actions(ofc->actions, ofpact_ct_get_action_len(ofc), ctx); |
4352 | ||
07659514 JS |
4353 | if (ofc->zone_src.field) { |
4354 | zone = mf_get_subfield(&ofc->zone_src, &ctx->xin->flow); | |
4355 | } else { | |
4356 | zone = ofc->zone_imm; | |
4357 | } | |
4358 | ||
4359 | ct_offset = nl_msg_start_nested(ctx->odp_actions, OVS_ACTION_ATTR_CT); | |
4360 | if (ofc->flags & NX_CT_F_COMMIT) { | |
4361 | nl_msg_put_flag(ctx->odp_actions, OVS_CT_ATTR_COMMIT); | |
4362 | } | |
4363 | nl_msg_put_u16(ctx->odp_actions, OVS_CT_ATTR_ZONE, zone); | |
8e53fe8c | 4364 | put_ct_mark(&ctx->xin->flow, &ctx->base_flow, ctx->odp_actions, ctx->wc); |
9daf2348 | 4365 | put_ct_label(&ctx->xin->flow, &ctx->base_flow, ctx->odp_actions, ctx->wc); |
d787ad39 | 4366 | put_ct_helper(ctx->odp_actions, ofc); |
9ac0aada JR |
4367 | put_ct_nat(ctx); |
4368 | ctx->ct_nat_action = NULL; | |
07659514 JS |
4369 | nl_msg_end_nested(ctx->odp_actions, ct_offset); |
4370 | ||
8e53fe8c JS |
4371 | /* Restore the original ct fields in the key. These should only be exposed |
4372 | * after recirculation to another table. */ | |
4373 | ctx->base_flow.ct_mark = old_ct_mark; | |
9daf2348 | 4374 | ctx->base_flow.ct_label = old_ct_label; |
8e53fe8c | 4375 | |
07659514 JS |
4376 | if (ofc->recirc_table == NX_CT_RECIRC_NONE) { |
4377 | /* If we do not recirculate as part of this action, hide the results of | |
4378 | * connection tracking from subsequent recirculations. */ | |
4379 | ctx->conntracked = false; | |
4380 | } else { | |
4381 | /* Use ct_* fields from datapath during recirculation upcall. */ | |
4382 | ctx->conntracked = true; | |
e37b8437 | 4383 | compose_recirculate_and_fork(ctx, ofc->recirc_table); |
07659514 JS |
4384 | } |
4385 | } | |
4386 | ||
9583bc14 EJ |
4387 | static void |
4388 | do_xlate_actions(const struct ofpact *ofpacts, size_t ofpacts_len, | |
4389 | struct xlate_ctx *ctx) | |
4390 | { | |
49a73e0c | 4391 | struct flow_wildcards *wc = ctx->wc; |
33bf9176 | 4392 | struct flow *flow = &ctx->xin->flow; |
9583bc14 EJ |
4393 | const struct ofpact *a; |
4394 | ||
a36de779 | 4395 | if (ovs_native_tunneling_is_on(ctx->xbridge->ofproto)) { |
53902038 | 4396 | tnl_neigh_snoop(flow, wc, ctx->xbridge->name); |
a36de779 | 4397 | } |
f47ea021 JR |
4398 | /* dl_type already in the mask, not set below. */ |
4399 | ||
9583bc14 EJ |
4400 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { |
4401 | struct ofpact_controller *controller; | |
4402 | const struct ofpact_metadata *metadata; | |
b2dd70be JR |
4403 | const struct ofpact_set_field *set_field; |
4404 | const struct mf_field *mf; | |
9583bc14 | 4405 | |
fff1b9c0 JR |
4406 | if (ctx->error) { |
4407 | break; | |
4408 | } | |
4409 | ||
e672ff9b JR |
4410 | if (ctx->exit) { |
4411 | /* Check if need to store the remaining actions for later | |
4412 | * execution. */ | |
4413 | if (exit_recirculates(ctx)) { | |
4414 | recirc_unroll_actions(a, OFPACT_ALIGN(ofpacts_len - | |
4415 | ((uint8_t *)a - | |
4416 | (uint8_t *)ofpacts)), | |
4417 | ctx); | |
4418 | } | |
4419 | break; | |
7bbdd84f SH |
4420 | } |
4421 | ||
9583bc14 EJ |
4422 | switch (a->type) { |
4423 | case OFPACT_OUTPUT: | |
4424 | xlate_output_action(ctx, ofpact_get_OUTPUT(a)->port, | |
4425 | ofpact_get_OUTPUT(a)->max_len, true); | |
4426 | break; | |
4427 | ||
7395c052 | 4428 | case OFPACT_GROUP: |
f4fb341b | 4429 | if (xlate_group_action(ctx, ofpact_get_GROUP(a)->group_id)) { |
1d741d6d | 4430 | /* Group could not be found. */ |
f4fb341b SH |
4431 | return; |
4432 | } | |
7395c052 NZ |
4433 | break; |
4434 | ||
9583bc14 EJ |
4435 | case OFPACT_CONTROLLER: |
4436 | controller = ofpact_get_CONTROLLER(a); | |
4437 | execute_controller_action(ctx, controller->max_len, | |
4438 | controller->reason, | |
4439 | controller->controller_id); | |
4440 | break; | |
4441 | ||
4442 | case OFPACT_ENQUEUE: | |
16194afd DDP |
4443 | memset(&wc->masks.skb_priority, 0xff, |
4444 | sizeof wc->masks.skb_priority); | |
9583bc14 EJ |
4445 | xlate_enqueue_action(ctx, ofpact_get_ENQUEUE(a)); |
4446 | break; | |
4447 | ||
4448 | case OFPACT_SET_VLAN_VID: | |
f74e7df7 | 4449 | wc->masks.vlan_tci |= htons(VLAN_VID_MASK | VLAN_CFI); |
ca287d20 JR |
4450 | if (flow->vlan_tci & htons(VLAN_CFI) || |
4451 | ofpact_get_SET_VLAN_VID(a)->push_vlan_if_needed) { | |
4452 | flow->vlan_tci &= ~htons(VLAN_VID_MASK); | |
4453 | flow->vlan_tci |= (htons(ofpact_get_SET_VLAN_VID(a)->vlan_vid) | |
4454 | | htons(VLAN_CFI)); | |
4455 | } | |
9583bc14 EJ |
4456 | break; |
4457 | ||
4458 | case OFPACT_SET_VLAN_PCP: | |
f74e7df7 | 4459 | wc->masks.vlan_tci |= htons(VLAN_PCP_MASK | VLAN_CFI); |
ca287d20 JR |
4460 | if (flow->vlan_tci & htons(VLAN_CFI) || |
4461 | ofpact_get_SET_VLAN_PCP(a)->push_vlan_if_needed) { | |
4462 | flow->vlan_tci &= ~htons(VLAN_PCP_MASK); | |
4463 | flow->vlan_tci |= htons((ofpact_get_SET_VLAN_PCP(a)->vlan_pcp | |
4464 | << VLAN_PCP_SHIFT) | VLAN_CFI); | |
4465 | } | |
9583bc14 EJ |
4466 | break; |
4467 | ||
4468 | case OFPACT_STRIP_VLAN: | |
f74e7df7 | 4469 | memset(&wc->masks.vlan_tci, 0xff, sizeof wc->masks.vlan_tci); |
33bf9176 | 4470 | flow->vlan_tci = htons(0); |
9583bc14 EJ |
4471 | break; |
4472 | ||
4473 | case OFPACT_PUSH_VLAN: | |
4474 | /* XXX 802.1AD(QinQ) */ | |
f74e7df7 | 4475 | memset(&wc->masks.vlan_tci, 0xff, sizeof wc->masks.vlan_tci); |
33bf9176 | 4476 | flow->vlan_tci = htons(VLAN_CFI); |
9583bc14 EJ |
4477 | break; |
4478 | ||
4479 | case OFPACT_SET_ETH_SRC: | |
74ff3298 JR |
4480 | WC_MASK_FIELD(wc, dl_src); |
4481 | flow->dl_src = ofpact_get_SET_ETH_SRC(a)->mac; | |
9583bc14 EJ |
4482 | break; |
4483 | ||
4484 | case OFPACT_SET_ETH_DST: | |
74ff3298 JR |
4485 | WC_MASK_FIELD(wc, dl_dst); |
4486 | flow->dl_dst = ofpact_get_SET_ETH_DST(a)->mac; | |
9583bc14 EJ |
4487 | break; |
4488 | ||
4489 | case OFPACT_SET_IPV4_SRC: | |
1d741d6d | 4490 | CHECK_MPLS_RECIRCULATION(); |
33bf9176 | 4491 | if (flow->dl_type == htons(ETH_TYPE_IP)) { |
f47ea021 | 4492 | memset(&wc->masks.nw_src, 0xff, sizeof wc->masks.nw_src); |
33bf9176 | 4493 | flow->nw_src = ofpact_get_SET_IPV4_SRC(a)->ipv4; |
9583bc14 EJ |
4494 | } |
4495 | break; | |
4496 | ||
4497 | case OFPACT_SET_IPV4_DST: | |
1d741d6d | 4498 | CHECK_MPLS_RECIRCULATION(); |
33bf9176 | 4499 | if (flow->dl_type == htons(ETH_TYPE_IP)) { |
f47ea021 | 4500 | memset(&wc->masks.nw_dst, 0xff, sizeof wc->masks.nw_dst); |
33bf9176 | 4501 | flow->nw_dst = ofpact_get_SET_IPV4_DST(a)->ipv4; |
9583bc14 EJ |
4502 | } |
4503 | break; | |
4504 | ||
04f01c24 | 4505 | case OFPACT_SET_IP_DSCP: |
1d741d6d | 4506 | CHECK_MPLS_RECIRCULATION(); |
04f01c24 | 4507 | if (is_ip_any(flow)) { |
f47ea021 | 4508 | wc->masks.nw_tos |= IP_DSCP_MASK; |
33bf9176 | 4509 | flow->nw_tos &= ~IP_DSCP_MASK; |
04f01c24 | 4510 | flow->nw_tos |= ofpact_get_SET_IP_DSCP(a)->dscp; |
9583bc14 EJ |
4511 | } |
4512 | break; | |
4513 | ||
ff14eb7a | 4514 | case OFPACT_SET_IP_ECN: |
1d741d6d | 4515 | CHECK_MPLS_RECIRCULATION(); |
ff14eb7a JR |
4516 | if (is_ip_any(flow)) { |
4517 | wc->masks.nw_tos |= IP_ECN_MASK; | |
4518 | flow->nw_tos &= ~IP_ECN_MASK; | |
4519 | flow->nw_tos |= ofpact_get_SET_IP_ECN(a)->ecn; | |
4520 | } | |
4521 | break; | |
4522 | ||
0c20dbe4 | 4523 | case OFPACT_SET_IP_TTL: |
1d741d6d | 4524 | CHECK_MPLS_RECIRCULATION(); |
0c20dbe4 JR |
4525 | if (is_ip_any(flow)) { |
4526 | wc->masks.nw_ttl = 0xff; | |
4527 | flow->nw_ttl = ofpact_get_SET_IP_TTL(a)->ttl; | |
4528 | } | |
4529 | break; | |
4530 | ||
9583bc14 | 4531 | case OFPACT_SET_L4_SRC_PORT: |
1d741d6d | 4532 | CHECK_MPLS_RECIRCULATION(); |
b8778a0d | 4533 | if (is_ip_any(flow) && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) { |
f47ea021 JR |
4534 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); |
4535 | memset(&wc->masks.tp_src, 0xff, sizeof wc->masks.tp_src); | |
33bf9176 | 4536 | flow->tp_src = htons(ofpact_get_SET_L4_SRC_PORT(a)->port); |
9583bc14 EJ |
4537 | } |
4538 | break; | |
4539 | ||
4540 | case OFPACT_SET_L4_DST_PORT: | |
1d741d6d | 4541 | CHECK_MPLS_RECIRCULATION(); |
b8778a0d | 4542 | if (is_ip_any(flow) && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) { |
f47ea021 JR |
4543 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); |
4544 | memset(&wc->masks.tp_dst, 0xff, sizeof wc->masks.tp_dst); | |
33bf9176 | 4545 | flow->tp_dst = htons(ofpact_get_SET_L4_DST_PORT(a)->port); |
9583bc14 EJ |
4546 | } |
4547 | break; | |
4548 | ||
4549 | case OFPACT_RESUBMIT: | |
4550 | xlate_ofpact_resubmit(ctx, ofpact_get_RESUBMIT(a)); | |
4551 | break; | |
4552 | ||
4553 | case OFPACT_SET_TUNNEL: | |
33bf9176 | 4554 | flow->tunnel.tun_id = htonll(ofpact_get_SET_TUNNEL(a)->tun_id); |
9583bc14 EJ |
4555 | break; |
4556 | ||
4557 | case OFPACT_SET_QUEUE: | |
16194afd DDP |
4558 | memset(&wc->masks.skb_priority, 0xff, |
4559 | sizeof wc->masks.skb_priority); | |
9583bc14 EJ |
4560 | xlate_set_queue_action(ctx, ofpact_get_SET_QUEUE(a)->queue_id); |
4561 | break; | |
4562 | ||
4563 | case OFPACT_POP_QUEUE: | |
16194afd DDP |
4564 | memset(&wc->masks.skb_priority, 0xff, |
4565 | sizeof wc->masks.skb_priority); | |
33bf9176 | 4566 | flow->skb_priority = ctx->orig_skb_priority; |
9583bc14 EJ |
4567 | break; |
4568 | ||
4569 | case OFPACT_REG_MOVE: | |
1d741d6d JR |
4570 | CHECK_MPLS_RECIRCULATION_IF( |
4571 | mf_is_l3_or_higher(ofpact_get_REG_MOVE(a)->dst.field) || | |
4572 | mf_is_l3_or_higher(ofpact_get_REG_MOVE(a)->src.field)); | |
33bf9176 | 4573 | nxm_execute_reg_move(ofpact_get_REG_MOVE(a), flow, wc); |
9583bc14 EJ |
4574 | break; |
4575 | ||
b2dd70be | 4576 | case OFPACT_SET_FIELD: |
1d741d6d JR |
4577 | CHECK_MPLS_RECIRCULATION_IF( |
4578 | mf_is_l3_or_higher(ofpact_get_SET_FIELD(a)->field)); | |
b2dd70be JR |
4579 | set_field = ofpact_get_SET_FIELD(a); |
4580 | mf = set_field->field; | |
b2dd70be JR |
4581 | |
4582 | /* Set field action only ever overwrites packet's outermost | |
4583 | * applicable header fields. Do nothing if no header exists. */ | |
4479846e JR |
4584 | if (mf->id == MFF_VLAN_VID) { |
4585 | wc->masks.vlan_tci |= htons(VLAN_CFI); | |
4586 | if (!(flow->vlan_tci & htons(VLAN_CFI))) { | |
4587 | break; | |
4588 | } | |
4589 | } else if ((mf->id == MFF_MPLS_LABEL || mf->id == MFF_MPLS_TC) | |
4590 | /* 'dl_type' is already unwildcarded. */ | |
4591 | && !eth_type_mpls(flow->dl_type)) { | |
4592 | break; | |
b2dd70be | 4593 | } |
67794d56 | 4594 | /* A flow may wildcard nw_frag. Do nothing if setting a transport |
b8778a0d | 4595 | * header field on a packet that does not have them. */ |
5e2e998a | 4596 | mf_mask_field_and_prereqs(mf, wc); |
b8778a0d JR |
4597 | if (mf_are_prereqs_ok(mf, flow)) { |
4598 | mf_set_flow_value_masked(mf, &set_field->value, | |
4599 | &set_field->mask, flow); | |
4600 | } | |
b2dd70be JR |
4601 | break; |
4602 | ||
9583bc14 | 4603 | case OFPACT_STACK_PUSH: |
1d741d6d JR |
4604 | CHECK_MPLS_RECIRCULATION_IF( |
4605 | mf_is_l3_or_higher(ofpact_get_STACK_PUSH(a)->subfield.field)); | |
33bf9176 BP |
4606 | nxm_execute_stack_push(ofpact_get_STACK_PUSH(a), flow, wc, |
4607 | &ctx->stack); | |
9583bc14 EJ |
4608 | break; |
4609 | ||
4610 | case OFPACT_STACK_POP: | |
1d741d6d JR |
4611 | CHECK_MPLS_RECIRCULATION_IF( |
4612 | mf_is_l3_or_higher(ofpact_get_STACK_POP(a)->subfield.field)); | |
f74e7df7 JP |
4613 | nxm_execute_stack_pop(ofpact_get_STACK_POP(a), flow, wc, |
4614 | &ctx->stack); | |
9583bc14 EJ |
4615 | break; |
4616 | ||
4617 | case OFPACT_PUSH_MPLS: | |
1d741d6d JR |
4618 | /* Recirculate if it is an IP packet with a zero ttl. This may |
4619 | * indicate that the packet was previously MPLS and an MPLS pop | |
4620 | * action converted it to IP. In this case recirculating should | |
4621 | * reveal the IP TTL which is used as the basis for a new MPLS | |
4622 | * LSE. */ | |
4623 | CHECK_MPLS_RECIRCULATION_IF( | |
4624 | !flow_count_mpls_labels(flow, wc) | |
4625 | && flow->nw_ttl == 0 | |
4626 | && is_ip_any(flow)); | |
8bfd0fda | 4627 | compose_mpls_push_action(ctx, ofpact_get_PUSH_MPLS(a)); |
9583bc14 EJ |
4628 | break; |
4629 | ||
4630 | case OFPACT_POP_MPLS: | |
1d741d6d | 4631 | CHECK_MPLS_RECIRCULATION(); |
8bfd0fda | 4632 | compose_mpls_pop_action(ctx, ofpact_get_POP_MPLS(a)->ethertype); |
9583bc14 EJ |
4633 | break; |
4634 | ||
097d4939 | 4635 | case OFPACT_SET_MPLS_LABEL: |
1d741d6d | 4636 | CHECK_MPLS_RECIRCULATION(); |
8bfd0fda BP |
4637 | compose_set_mpls_label_action( |
4638 | ctx, ofpact_get_SET_MPLS_LABEL(a)->label); | |
1d741d6d | 4639 | break; |
097d4939 JR |
4640 | |
4641 | case OFPACT_SET_MPLS_TC: | |
1d741d6d | 4642 | CHECK_MPLS_RECIRCULATION(); |
8bfd0fda | 4643 | compose_set_mpls_tc_action(ctx, ofpact_get_SET_MPLS_TC(a)->tc); |
097d4939 JR |
4644 | break; |
4645 | ||
9583bc14 | 4646 | case OFPACT_SET_MPLS_TTL: |
1d741d6d | 4647 | CHECK_MPLS_RECIRCULATION(); |
8bfd0fda | 4648 | compose_set_mpls_ttl_action(ctx, ofpact_get_SET_MPLS_TTL(a)->ttl); |
9583bc14 EJ |
4649 | break; |
4650 | ||
4651 | case OFPACT_DEC_MPLS_TTL: | |
1d741d6d | 4652 | CHECK_MPLS_RECIRCULATION(); |
9cfef3d0 | 4653 | if (compose_dec_mpls_ttl_action(ctx)) { |
ad3efdcb | 4654 | return; |
9583bc14 EJ |
4655 | } |
4656 | break; | |
4657 | ||
4658 | case OFPACT_DEC_TTL: | |
1d741d6d | 4659 | CHECK_MPLS_RECIRCULATION(); |
f74e7df7 | 4660 | wc->masks.nw_ttl = 0xff; |
9583bc14 | 4661 | if (compose_dec_ttl(ctx, ofpact_get_DEC_TTL(a))) { |
ad3efdcb | 4662 | return; |
9583bc14 EJ |
4663 | } |
4664 | break; | |
4665 | ||
4666 | case OFPACT_NOTE: | |
4667 | /* Nothing to do. */ | |
4668 | break; | |
4669 | ||
4670 | case OFPACT_MULTIPATH: | |
1d741d6d | 4671 | CHECK_MPLS_RECIRCULATION(); |
33bf9176 | 4672 | multipath_execute(ofpact_get_MULTIPATH(a), flow, wc); |
9583bc14 EJ |
4673 | break; |
4674 | ||
4675 | case OFPACT_BUNDLE: | |
1d741d6d | 4676 | CHECK_MPLS_RECIRCULATION(); |
9583bc14 EJ |
4677 | xlate_bundle_action(ctx, ofpact_get_BUNDLE(a)); |
4678 | break; | |
4679 | ||
4680 | case OFPACT_OUTPUT_REG: | |
4681 | xlate_output_reg_action(ctx, ofpact_get_OUTPUT_REG(a)); | |
4682 | break; | |
4683 | ||
4684 | case OFPACT_LEARN: | |
1d741d6d | 4685 | CHECK_MPLS_RECIRCULATION(); |
9583bc14 EJ |
4686 | xlate_learn_action(ctx, ofpact_get_LEARN(a)); |
4687 | break; | |
4688 | ||
afc3987b BP |
4689 | case OFPACT_CONJUNCTION: { |
4690 | /* A flow with a "conjunction" action represents part of a special | |
4691 | * kind of "set membership match". Such a flow should not actually | |
4692 | * get executed, but it could via, say, a "packet-out", even though | |
4693 | * that wouldn't be useful. Log it to help debugging. */ | |
4694 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); | |
4695 | VLOG_INFO_RL(&rl, "executing no-op conjunction action"); | |
18080541 | 4696 | break; |
afc3987b | 4697 | } |
18080541 | 4698 | |
9583bc14 EJ |
4699 | case OFPACT_EXIT: |
4700 | ctx->exit = true; | |
4701 | break; | |
4702 | ||
e672ff9b JR |
4703 | case OFPACT_UNROLL_XLATE: { |
4704 | struct ofpact_unroll_xlate *unroll = ofpact_get_UNROLL_XLATE(a); | |
4705 | ||
4706 | /* Restore translation context data that was stored earlier. */ | |
4707 | ctx->table_id = unroll->rule_table_id; | |
4708 | ctx->rule_cookie = unroll->rule_cookie; | |
4709 | break; | |
4710 | } | |
9583bc14 | 4711 | case OFPACT_FIN_TIMEOUT: |
1d741d6d | 4712 | CHECK_MPLS_RECIRCULATION(); |
33bf9176 | 4713 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); |
9583bc14 EJ |
4714 | xlate_fin_timeout(ctx, ofpact_get_FIN_TIMEOUT(a)); |
4715 | break; | |
4716 | ||
4717 | case OFPACT_CLEAR_ACTIONS: | |
7fdb60a7 | 4718 | ofpbuf_clear(&ctx->action_set); |
c61f3870 BP |
4719 | ctx->xin->flow.actset_output = OFPP_UNSET; |
4720 | ctx->action_set_has_group = false; | |
7fdb60a7 SH |
4721 | break; |
4722 | ||
4723 | case OFPACT_WRITE_ACTIONS: | |
4724 | xlate_write_actions(ctx, a); | |
9583bc14 EJ |
4725 | break; |
4726 | ||
4727 | case OFPACT_WRITE_METADATA: | |
4728 | metadata = ofpact_get_WRITE_METADATA(a); | |
33bf9176 BP |
4729 | flow->metadata &= ~metadata->mask; |
4730 | flow->metadata |= metadata->metadata & metadata->mask; | |
9583bc14 EJ |
4731 | break; |
4732 | ||
638a19b0 JR |
4733 | case OFPACT_METER: |
4734 | /* Not implemented yet. */ | |
4735 | break; | |
4736 | ||
9583bc14 | 4737 | case OFPACT_GOTO_TABLE: { |
9583bc14 | 4738 | struct ofpact_goto_table *ogt = ofpact_get_GOTO_TABLE(a); |
9583bc14 | 4739 | |
7bbdd84f SH |
4740 | /* Allow ctx->table_id == TBL_INTERNAL, which will be greater |
4741 | * than ogt->table_id. This is to allow goto_table actions that | |
4742 | * triggered recirculation: ctx->table_id will be TBL_INTERNAL | |
4743 | * after recirculation. */ | |
4744 | ovs_assert(ctx->table_id == TBL_INTERNAL | |
4745 | || ctx->table_id < ogt->table_id); | |
4468099e | 4746 | xlate_table_action(ctx, ctx->xin->flow.in_port.ofp_port, |
6d328fa2 | 4747 | ogt->table_id, true, true); |
9583bc14 EJ |
4748 | break; |
4749 | } | |
4750 | ||
4751 | case OFPACT_SAMPLE: | |
4752 | xlate_sample_action(ctx, ofpact_get_SAMPLE(a)); | |
4753 | break; | |
d4abaff5 | 4754 | |
07659514 JS |
4755 | case OFPACT_CT: |
4756 | CHECK_MPLS_RECIRCULATION(); | |
4757 | compose_conntrack_action(ctx, ofpact_get_CT(a)); | |
4758 | break; | |
4759 | ||
9ac0aada JR |
4760 | case OFPACT_NAT: |
4761 | /* This will be processed by compose_conntrack_action(). */ | |
4762 | ctx->ct_nat_action = ofpact_get_NAT(a); | |
4763 | break; | |
4764 | ||
d4abaff5 BP |
4765 | case OFPACT_DEBUG_RECIRC: |
4766 | ctx_trigger_recirculation(ctx); | |
4767 | a = ofpact_next(a); | |
4768 | break; | |
9583bc14 | 4769 | } |
1d741d6d JR |
4770 | |
4771 | /* Check if need to store this and the remaining actions for later | |
4772 | * execution. */ | |
fff1b9c0 | 4773 | if (!ctx->error && ctx->exit && ctx_first_recirculation_action(ctx)) { |
1d741d6d JR |
4774 | recirc_unroll_actions(a, OFPACT_ALIGN(ofpacts_len - |
4775 | ((uint8_t *)a - | |
4776 | (uint8_t *)ofpacts)), | |
4777 | ctx); | |
4778 | break; | |
4779 | } | |
9583bc14 | 4780 | } |
9583bc14 EJ |
4781 | } |
4782 | ||
4783 | void | |
4784 | xlate_in_init(struct xlate_in *xin, struct ofproto_dpif *ofproto, | |
cc377352 EJ |
4785 | const struct flow *flow, ofp_port_t in_port, |
4786 | struct rule_dpif *rule, uint16_t tcp_flags, | |
1520ef4f BP |
4787 | const struct dp_packet *packet, struct flow_wildcards *wc, |
4788 | struct ofpbuf *odp_actions) | |
9583bc14 EJ |
4789 | { |
4790 | xin->ofproto = ofproto; | |
4791 | xin->flow = *flow; | |
cc377352 | 4792 | xin->flow.in_port.ofp_port = in_port; |
c61f3870 | 4793 | xin->flow.actset_output = OFPP_UNSET; |
9583bc14 EJ |
4794 | xin->packet = packet; |
4795 | xin->may_learn = packet != NULL; | |
4796 | xin->rule = rule; | |
b256dc52 | 4797 | xin->xcache = NULL; |
9583bc14 EJ |
4798 | xin->ofpacts = NULL; |
4799 | xin->ofpacts_len = 0; | |
4800 | xin->tcp_flags = tcp_flags; | |
4801 | xin->resubmit_hook = NULL; | |
4802 | xin->report_hook = NULL; | |
4803 | xin->resubmit_stats = NULL; | |
cdd42eda JG |
4804 | xin->recurse = 0; |
4805 | xin->resubmits = 0; | |
49a73e0c | 4806 | xin->wc = wc; |
1520ef4f | 4807 | xin->odp_actions = odp_actions; |
e672ff9b JR |
4808 | |
4809 | /* Do recirc lookup. */ | |
4810 | xin->recirc = flow->recirc_id | |
4811 | ? recirc_id_node_find(flow->recirc_id) | |
4812 | : NULL; | |
9583bc14 EJ |
4813 | } |
4814 | ||
4815 | void | |
4816 | xlate_out_uninit(struct xlate_out *xout) | |
4817 | { | |
e672ff9b | 4818 | if (xout) { |
fbf5d6ec | 4819 | recirc_refs_unref(&xout->recircs); |
9583bc14 EJ |
4820 | } |
4821 | } | |
4822 | ||
4823 | /* Translates the 'ofpacts_len' bytes of "struct ofpact"s starting at 'ofpacts' | |
4824 | * into datapath actions, using 'ctx', and discards the datapath actions. */ | |
4825 | void | |
4826 | xlate_actions_for_side_effects(struct xlate_in *xin) | |
4827 | { | |
4828 | struct xlate_out xout; | |
fff1b9c0 JR |
4829 | enum xlate_error error; |
4830 | ||
4831 | error = xlate_actions(xin, &xout); | |
4832 | if (error) { | |
4833 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
4834 | ||
4835 | VLOG_WARN_RL(&rl, "xlate_actions failed (%s)!", xlate_strerror(error)); | |
4836 | } | |
9583bc14 | 4837 | |
9583bc14 EJ |
4838 | xlate_out_uninit(&xout); |
4839 | } | |
9583bc14 | 4840 | \f |
55954f6e EJ |
4841 | static struct skb_priority_to_dscp * |
4842 | get_skb_priority(const struct xport *xport, uint32_t skb_priority) | |
4843 | { | |
4844 | struct skb_priority_to_dscp *pdscp; | |
4845 | uint32_t hash; | |
4846 | ||
4847 | hash = hash_int(skb_priority, 0); | |
4848 | HMAP_FOR_EACH_IN_BUCKET (pdscp, hmap_node, hash, &xport->skb_priorities) { | |
4849 | if (pdscp->skb_priority == skb_priority) { | |
4850 | return pdscp; | |
4851 | } | |
4852 | } | |
4853 | return NULL; | |
4854 | } | |
4855 | ||
4856 | static bool | |
4857 | dscp_from_skb_priority(const struct xport *xport, uint32_t skb_priority, | |
4858 | uint8_t *dscp) | |
4859 | { | |
4860 | struct skb_priority_to_dscp *pdscp = get_skb_priority(xport, skb_priority); | |
4861 | *dscp = pdscp ? pdscp->dscp : 0; | |
4862 | return pdscp != NULL; | |
4863 | } | |
4864 | ||
16194afd DDP |
4865 | static size_t |
4866 | count_skb_priorities(const struct xport *xport) | |
4867 | { | |
4868 | return hmap_count(&xport->skb_priorities); | |
4869 | } | |
4870 | ||
55954f6e EJ |
4871 | static void |
4872 | clear_skb_priorities(struct xport *xport) | |
4873 | { | |
4874 | struct skb_priority_to_dscp *pdscp, *next; | |
4875 | ||
4876 | HMAP_FOR_EACH_SAFE (pdscp, next, hmap_node, &xport->skb_priorities) { | |
4877 | hmap_remove(&xport->skb_priorities, &pdscp->hmap_node); | |
4878 | free(pdscp); | |
4879 | } | |
4880 | } | |
4881 | ||
ce4a6b76 BP |
4882 | static bool |
4883 | actions_output_to_local_port(const struct xlate_ctx *ctx) | |
4884 | { | |
46c88433 | 4885 | odp_port_t local_odp_port = ofp_port_to_odp_port(ctx->xbridge, OFPP_LOCAL); |
ce4a6b76 BP |
4886 | const struct nlattr *a; |
4887 | unsigned int left; | |
4888 | ||
1520ef4f BP |
4889 | NL_ATTR_FOR_EACH_UNSAFE (a, left, ctx->odp_actions->data, |
4890 | ctx->odp_actions->size) { | |
ce4a6b76 BP |
4891 | if (nl_attr_type(a) == OVS_ACTION_ATTR_OUTPUT |
4892 | && nl_attr_get_odp_port(a) == local_odp_port) { | |
4893 | return true; | |
4894 | } | |
4895 | } | |
4896 | return false; | |
4897 | } | |
9583bc14 | 4898 | |
5e2a6702 | 4899 | #if defined(__linux__) |
7d031d7e BP |
4900 | /* Returns the maximum number of packets that the Linux kernel is willing to |
4901 | * queue up internally to certain kinds of software-implemented ports, or the | |
4902 | * default (and rarely modified) value if it cannot be determined. */ | |
4903 | static int | |
4904 | netdev_max_backlog(void) | |
4905 | { | |
4906 | static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER; | |
4907 | static int max_backlog = 1000; /* The normal default value. */ | |
4908 | ||
4909 | if (ovsthread_once_start(&once)) { | |
4910 | static const char filename[] = "/proc/sys/net/core/netdev_max_backlog"; | |
4911 | FILE *stream; | |
4912 | int n; | |
4913 | ||
4914 | stream = fopen(filename, "r"); | |
4915 | if (!stream) { | |
120c348f | 4916 | VLOG_INFO("%s: open failed (%s)", filename, ovs_strerror(errno)); |
7d031d7e BP |
4917 | } else { |
4918 | if (fscanf(stream, "%d", &n) != 1) { | |
4919 | VLOG_WARN("%s: read error", filename); | |
4920 | } else if (n <= 100) { | |
4921 | VLOG_WARN("%s: unexpectedly small value %d", filename, n); | |
4922 | } else { | |
4923 | max_backlog = n; | |
4924 | } | |
4925 | fclose(stream); | |
4926 | } | |
4927 | ovsthread_once_done(&once); | |
4928 | ||
4929 | VLOG_DBG("%s: using %d max_backlog", filename, max_backlog); | |
4930 | } | |
4931 | ||
4932 | return max_backlog; | |
4933 | } | |
4934 | ||
4935 | /* Counts and returns the number of OVS_ACTION_ATTR_OUTPUT actions in | |
4936 | * 'odp_actions'. */ | |
4937 | static int | |
4938 | count_output_actions(const struct ofpbuf *odp_actions) | |
4939 | { | |
4940 | const struct nlattr *a; | |
4941 | size_t left; | |
4942 | int n = 0; | |
4943 | ||
6fd6ed71 | 4944 | NL_ATTR_FOR_EACH_UNSAFE (a, left, odp_actions->data, odp_actions->size) { |
7d031d7e BP |
4945 | if (a->nla_type == OVS_ACTION_ATTR_OUTPUT) { |
4946 | n++; | |
4947 | } | |
4948 | } | |
4949 | return n; | |
4950 | } | |
5e2a6702 | 4951 | #endif /* defined(__linux__) */ |
7d031d7e BP |
4952 | |
4953 | /* Returns true if 'odp_actions' contains more output actions than the datapath | |
4954 | * can reliably handle in one go. On Linux, this is the value of the | |
4955 | * net.core.netdev_max_backlog sysctl, which limits the maximum number of | |
4956 | * packets that the kernel is willing to queue up for processing while the | |
4957 | * datapath is processing a set of actions. */ | |
4958 | static bool | |
5e2a6702 | 4959 | too_many_output_actions(const struct ofpbuf *odp_actions OVS_UNUSED) |
7d031d7e BP |
4960 | { |
4961 | #ifdef __linux__ | |
6fd6ed71 | 4962 | return (odp_actions->size / NL_A_U32_SIZE > netdev_max_backlog() |
7d031d7e BP |
4963 | && count_output_actions(odp_actions) > netdev_max_backlog()); |
4964 | #else | |
4965 | /* OSes other than Linux might have similar limits, but we don't know how | |
4966 | * to determine them.*/ | |
4967 | return false; | |
4968 | #endif | |
4969 | } | |
4970 | ||
234c3da9 BP |
4971 | static void |
4972 | xlate_wc_init(struct xlate_ctx *ctx) | |
4973 | { | |
4974 | flow_wildcards_init_catchall(ctx->wc); | |
4975 | ||
4976 | /* Some fields we consider to always be examined. */ | |
5e2e998a JR |
4977 | WC_MASK_FIELD(ctx->wc, in_port); |
4978 | WC_MASK_FIELD(ctx->wc, dl_type); | |
234c3da9 | 4979 | if (is_ip_any(&ctx->xin->flow)) { |
5e2e998a | 4980 | WC_MASK_FIELD_MASK(ctx->wc, nw_frag, FLOW_NW_FRAG_MASK); |
234c3da9 BP |
4981 | } |
4982 | ||
4983 | if (ctx->xbridge->support.odp.recirc) { | |
4984 | /* Always exactly match recirc_id when datapath supports | |
4985 | * recirculation. */ | |
5e2e998a | 4986 | WC_MASK_FIELD(ctx->wc, recirc_id); |
234c3da9 BP |
4987 | } |
4988 | ||
4989 | if (ctx->xbridge->netflow) { | |
4990 | netflow_mask_wc(&ctx->xin->flow, ctx->wc); | |
4991 | } | |
4992 | ||
4993 | tnl_wc_init(&ctx->xin->flow, ctx->wc); | |
4994 | } | |
4995 | ||
4996 | static void | |
4997 | xlate_wc_finish(struct xlate_ctx *ctx) | |
4998 | { | |
4999 | /* Clear the metadata and register wildcard masks, because we won't | |
5000 | * use non-header fields as part of the cache. */ | |
5001 | flow_wildcards_clear_non_packet_fields(ctx->wc); | |
5002 | ||
5003 | /* ICMPv4 and ICMPv6 have 8-bit "type" and "code" fields. struct flow | |
5004 | * uses the low 8 bits of the 16-bit tp_src and tp_dst members to | |
5005 | * represent these fields. The datapath interface, on the other hand, | |
5006 | * represents them with just 8 bits each. This means that if the high | |
5007 | * 8 bits of the masks for these fields somehow become set, then they | |
5008 | * will get chopped off by a round trip through the datapath, and | |
5009 | * revalidation will spot that as an inconsistency and delete the flow. | |
5010 | * Avoid the problem here by making sure that only the low 8 bits of | |
5011 | * either field can be unwildcarded for ICMP. | |
5012 | */ | |
5013 | if (is_icmpv4(&ctx->xin->flow) || is_icmpv6(&ctx->xin->flow)) { | |
5014 | ctx->wc->masks.tp_src &= htons(UINT8_MAX); | |
5015 | ctx->wc->masks.tp_dst &= htons(UINT8_MAX); | |
5016 | } | |
5017 | /* VLAN_TCI CFI bit must be matched if any of the TCI is matched. */ | |
5018 | if (ctx->wc->masks.vlan_tci) { | |
5019 | ctx->wc->masks.vlan_tci |= htons(VLAN_CFI); | |
5020 | } | |
5021 | } | |
5022 | ||
e672ff9b JR |
5023 | /* Translates the flow, actions, or rule in 'xin' into datapath actions in |
5024 | * 'xout'. | |
56450a41 | 5025 | * The caller must take responsibility for eventually freeing 'xout', with |
fff1b9c0 JR |
5026 | * xlate_out_uninit(). |
5027 | * Returns 'XLATE_OK' if translation was successful. In case of an error an | |
5028 | * empty set of actions will be returned in 'xin->odp_actions' (if non-NULL), | |
5029 | * so that most callers may ignore the return value and transparently install a | |
5030 | * drop flow when the translation fails. */ | |
5031 | enum xlate_error | |
84f0f298 | 5032 | xlate_actions(struct xlate_in *xin, struct xlate_out *xout) |
9583bc14 | 5033 | { |
e467ea42 BP |
5034 | *xout = (struct xlate_out) { |
5035 | .slow = 0, | |
fbf5d6ec | 5036 | .recircs = RECIRC_REFS_EMPTY_INITIALIZER, |
e467ea42 BP |
5037 | }; |
5038 | ||
84f0f298 | 5039 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
bb00fdef BP |
5040 | struct xbridge *xbridge = xbridge_lookup(xcfg, xin->ofproto); |
5041 | if (!xbridge) { | |
fff1b9c0 | 5042 | return XLATE_BRIDGE_NOT_FOUND; |
bb00fdef BP |
5043 | } |
5044 | ||
33bf9176 BP |
5045 | struct flow *flow = &xin->flow; |
5046 | ||
bb00fdef BP |
5047 | union mf_subvalue stack_stub[1024 / sizeof(union mf_subvalue)]; |
5048 | uint64_t action_set_stub[1024 / 8]; | |
49a73e0c | 5049 | struct flow_wildcards scratch_wc; |
1520ef4f BP |
5050 | uint64_t actions_stub[256 / 8]; |
5051 | struct ofpbuf scratch_actions = OFPBUF_STUB_INITIALIZER(actions_stub); | |
bb00fdef BP |
5052 | struct xlate_ctx ctx = { |
5053 | .xin = xin, | |
5054 | .xout = xout, | |
5055 | .base_flow = *flow, | |
c2b878e0 | 5056 | .orig_tunnel_ipv6_dst = flow_tnl_dst(&flow->tunnel), |
bb00fdef BP |
5057 | .xbridge = xbridge, |
5058 | .stack = OFPBUF_STUB_INITIALIZER(stack_stub), | |
5059 | .rule = xin->rule, | |
49a73e0c | 5060 | .wc = xin->wc ? xin->wc : &scratch_wc, |
1520ef4f | 5061 | .odp_actions = xin->odp_actions ? xin->odp_actions : &scratch_actions, |
bb00fdef | 5062 | |
cdd42eda JG |
5063 | .recurse = xin->recurse, |
5064 | .resubmits = xin->resubmits, | |
bb00fdef BP |
5065 | .in_group = false, |
5066 | .in_action_set = false, | |
5067 | ||
5068 | .table_id = 0, | |
5069 | .rule_cookie = OVS_BE64_MAX, | |
5070 | .orig_skb_priority = flow->skb_priority, | |
5071 | .sflow_n_outputs = 0, | |
5072 | .sflow_odp_port = 0, | |
2031ef97 | 5073 | .nf_output_iface = NF_OUT_DROP, |
bb00fdef | 5074 | .exit = false, |
fff1b9c0 | 5075 | .error = XLATE_OK, |
3d6151f3 | 5076 | .mirrors = 0, |
bb00fdef BP |
5077 | |
5078 | .recirc_action_offset = -1, | |
5079 | .last_unroll_offset = -1, | |
5080 | ||
5081 | .was_mpls = false, | |
07659514 | 5082 | .conntracked = false, |
bb00fdef | 5083 | |
9ac0aada JR |
5084 | .ct_nat_action = NULL, |
5085 | ||
bb00fdef BP |
5086 | .action_set_has_group = false, |
5087 | .action_set = OFPBUF_STUB_INITIALIZER(action_set_stub), | |
5088 | }; | |
865ca6cf BP |
5089 | |
5090 | /* 'base_flow' reflects the packet as it came in, but we need it to reflect | |
5091 | * the packet as the datapath will treat it for output actions: | |
5092 | * | |
5093 | * - Our datapath doesn't retain tunneling information without us | |
5094 | * re-setting it, so clear the tunnel data. | |
5095 | * | |
5096 | * - For VLAN splinters, a higher layer may pretend that the packet | |
5097 | * came in on 'flow->in_port.ofp_port' with 'flow->vlan_tci' | |
5098 | * attached, because that's how we want to treat it from an OpenFlow | |
5099 | * perspective. But from the datapath's perspective it actually came | |
5100 | * in on a VLAN device without any VLAN attached. So here we put the | |
5101 | * datapath's view of the VLAN information in 'base_flow' to ensure | |
5102 | * correct treatment. | |
5103 | */ | |
bb00fdef | 5104 | memset(&ctx.base_flow.tunnel, 0, sizeof ctx.base_flow.tunnel); |
865ca6cf BP |
5105 | if (flow->in_port.ofp_port |
5106 | != vsp_realdev_to_vlandev(xbridge->ofproto, | |
5107 | flow->in_port.ofp_port, | |
5108 | flow->vlan_tci)) { | |
5109 | ctx.base_flow.vlan_tci = 0; | |
5110 | } | |
5111 | ||
1520ef4f | 5112 | ofpbuf_reserve(ctx.odp_actions, NL_A_U32_SIZE); |
234c3da9 BP |
5113 | if (xin->wc) { |
5114 | xlate_wc_init(&ctx); | |
5115 | } | |
bb00fdef | 5116 | |
46c88433 | 5117 | COVERAGE_INC(xlate_actions); |
9583bc14 | 5118 | |
e672ff9b | 5119 | if (xin->recirc) { |
2082425c | 5120 | const struct recirc_state *state = &xin->recirc->state; |
e672ff9b | 5121 | |
d6bef3cc BP |
5122 | xlate_report(&ctx, "Restoring state post-recirculation:"); |
5123 | ||
e672ff9b JR |
5124 | if (xin->ofpacts_len > 0 || ctx.rule) { |
5125 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); | |
d6bef3cc | 5126 | const char *conflict = xin->ofpacts_len ? "actions" : "rule"; |
e672ff9b | 5127 | |
d6bef3cc BP |
5128 | VLOG_WARN_RL(&rl, "Recirculation conflict (%s)!", conflict); |
5129 | xlate_report(&ctx, "- Recirculation conflict (%s)!", conflict); | |
fff1b9c0 | 5130 | ctx.error = XLATE_RECIRCULATION_CONFLICT; |
1520ef4f | 5131 | goto exit; |
e672ff9b JR |
5132 | } |
5133 | ||
5134 | /* Set the bridge for post-recirculation processing if needed. */ | |
2082425c | 5135 | if (ctx.xbridge->ofproto != state->ofproto) { |
e672ff9b | 5136 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
2082425c BP |
5137 | const struct xbridge *new_bridge |
5138 | = xbridge_lookup(xcfg, state->ofproto); | |
e672ff9b JR |
5139 | |
5140 | if (OVS_UNLIKELY(!new_bridge)) { | |
5141 | /* Drop the packet if the bridge cannot be found. */ | |
5142 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); | |
5143 | VLOG_WARN_RL(&rl, "Recirculation bridge no longer exists."); | |
d6bef3cc | 5144 | xlate_report(&ctx, "- Recirculation bridge no longer exists."); |
fff1b9c0 | 5145 | ctx.error = XLATE_BRIDGE_NOT_FOUND; |
1520ef4f | 5146 | goto exit; |
e672ff9b JR |
5147 | } |
5148 | ctx.xbridge = new_bridge; | |
5149 | } | |
5150 | ||
5151 | /* Set the post-recirculation table id. Note: A table lookup is done | |
5152 | * only if there are no post-recirculation actions. */ | |
2082425c | 5153 | ctx.table_id = state->table_id; |
d6bef3cc | 5154 | xlate_report(&ctx, "- Resuming from table %"PRIu8, ctx.table_id); |
e672ff9b | 5155 | |
07659514 JS |
5156 | if (!state->conntracked) { |
5157 | clear_conntrack(flow); | |
5158 | } | |
5159 | ||
e672ff9b JR |
5160 | /* Restore pipeline metadata. May change flow's in_port and other |
5161 | * metadata to the values that existed when recirculation was | |
5162 | * triggered. */ | |
2082425c | 5163 | recirc_metadata_to_flow(&state->metadata, flow); |
e672ff9b JR |
5164 | |
5165 | /* Restore stack, if any. */ | |
2082425c | 5166 | if (state->stack) { |
5c1b2314 BP |
5167 | ofpbuf_put(&ctx.stack, state->stack, |
5168 | state->n_stack * sizeof *state->stack); | |
e672ff9b JR |
5169 | } |
5170 | ||
29bae541 BP |
5171 | /* Restore mirror state. */ |
5172 | ctx.mirrors = state->mirrors; | |
5173 | ||
e672ff9b | 5174 | /* Restore action set, if any. */ |
2082425c | 5175 | if (state->action_set_len) { |
e672ff9b JR |
5176 | const struct ofpact *a; |
5177 | ||
d6bef3cc BP |
5178 | xlate_report_actions(&ctx, "- Restoring action set", |
5179 | state->ofpacts, state->action_set_len); | |
5180 | ||
2082425c | 5181 | ofpbuf_put(&ctx.action_set, state->ofpacts, state->action_set_len); |
e672ff9b | 5182 | |
2082425c | 5183 | OFPACT_FOR_EACH(a, state->ofpacts, state->action_set_len) { |
e672ff9b JR |
5184 | if (a->type == OFPACT_GROUP) { |
5185 | ctx.action_set_has_group = true; | |
5186 | break; | |
5187 | } | |
5188 | } | |
5189 | } | |
5190 | ||
5191 | /* Restore recirculation actions. If there are no actions, processing | |
5192 | * will start with a lookup in the table set above. */ | |
2082425c BP |
5193 | if (state->ofpacts_len > state->action_set_len) { |
5194 | xin->ofpacts_len = state->ofpacts_len - state->action_set_len; | |
5195 | xin->ofpacts = state->ofpacts + | |
5196 | state->action_set_len / sizeof *state->ofpacts; | |
d6bef3cc BP |
5197 | |
5198 | xlate_report_actions(&ctx, "- Restoring actions", | |
5199 | xin->ofpacts, xin->ofpacts_len); | |
e672ff9b JR |
5200 | } |
5201 | } else if (OVS_UNLIKELY(flow->recirc_id)) { | |
5202 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); | |
5203 | ||
5204 | VLOG_WARN_RL(&rl, "Recirculation context not found for ID %"PRIx32, | |
5205 | flow->recirc_id); | |
fff1b9c0 | 5206 | ctx.error = XLATE_NO_RECIRCULATION_CONTEXT; |
1520ef4f | 5207 | goto exit; |
e672ff9b | 5208 | } |
621b8064 JR |
5209 | /* The bridge is now known so obtain its table version. */ |
5210 | ctx.tables_version = ofproto_dpif_get_tables_version(ctx.xbridge->ofproto); | |
9583bc14 | 5211 | |
10c44245 | 5212 | if (!xin->ofpacts && !ctx.rule) { |
b2e89cc9 BP |
5213 | ctx.rule = rule_dpif_lookup_from_table( |
5214 | ctx.xbridge->ofproto, ctx.tables_version, flow, xin->wc, | |
1e1e1d19 | 5215 | ctx.xin->resubmit_stats, &ctx.table_id, |
b2e89cc9 | 5216 | flow->in_port.ofp_port, true, true); |
10c44245 | 5217 | if (ctx.xin->resubmit_stats) { |
b2e89cc9 | 5218 | rule_dpif_credit_stats(ctx.rule, ctx.xin->resubmit_stats); |
10c44245 | 5219 | } |
b256dc52 JS |
5220 | if (ctx.xin->xcache) { |
5221 | struct xc_entry *entry; | |
5222 | ||
5223 | entry = xlate_cache_add_entry(ctx.xin->xcache, XC_RULE); | |
b2e89cc9 | 5224 | entry->u.rule = ctx.rule; |
1e1e1d19 | 5225 | rule_dpif_ref(ctx.rule); |
b256dc52 | 5226 | } |
a8c31348 BP |
5227 | |
5228 | if (OVS_UNLIKELY(ctx.xin->resubmit_hook)) { | |
b2e89cc9 | 5229 | ctx.xin->resubmit_hook(ctx.xin, ctx.rule, 0); |
a8c31348 | 5230 | } |
10c44245 | 5231 | } |
10c44245 | 5232 | |
14d2b8b2 BP |
5233 | /* Get the proximate input port of the packet. (If xin->recirc, |
5234 | * flow->in_port is the ultimate input port of the packet.) */ | |
5235 | struct xport *in_port = get_ofp_port(xbridge, | |
5236 | ctx.base_flow.in_port.ofp_port); | |
5237 | ||
e672ff9b JR |
5238 | /* Tunnel stats only for non-recirculated packets. */ |
5239 | if (!xin->recirc && in_port && in_port->is_tunnel) { | |
b256dc52 JS |
5240 | if (ctx.xin->resubmit_stats) { |
5241 | netdev_vport_inc_rx(in_port->netdev, ctx.xin->resubmit_stats); | |
5242 | if (in_port->bfd) { | |
5243 | bfd_account_rx(in_port->bfd, ctx.xin->resubmit_stats); | |
5244 | } | |
5245 | } | |
5246 | if (ctx.xin->xcache) { | |
5247 | struct xc_entry *entry; | |
5248 | ||
5249 | entry = xlate_cache_add_entry(ctx.xin->xcache, XC_NETDEV); | |
5250 | entry->u.dev.rx = netdev_ref(in_port->netdev); | |
5251 | entry->u.dev.bfd = bfd_ref(in_port->bfd); | |
d6fc5f57 EJ |
5252 | } |
5253 | } | |
5254 | ||
bef1403e BP |
5255 | if (!xin->recirc && process_special(&ctx, in_port)) { |
5256 | /* process_special() did all the processing for this packet. | |
5257 | * | |
5258 | * We do not perform special processing on recirculated packets, as | |
5259 | * recirculated packets are not really received by the bridge.*/ | |
5260 | } else if (in_port && in_port->xbundle | |
5261 | && xbundle_mirror_out(xbridge, in_port->xbundle)) { | |
5262 | if (ctx.xin->packet != NULL) { | |
5263 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
5264 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet received on port " | |
5265 | "%s, which is reserved exclusively for mirroring", | |
5266 | ctx.xbridge->name, in_port->xbundle->name); | |
5267 | } | |
5268 | } else { | |
e672ff9b | 5269 | /* Sampling is done only for packets really received by the bridge. */ |
a6092018 | 5270 | unsigned int user_cookie_offset = 0; |
e672ff9b | 5271 | if (!xin->recirc) { |
a6092018 BP |
5272 | user_cookie_offset = compose_sflow_action(&ctx); |
5273 | compose_ipfix_action(&ctx, ODPP_NONE); | |
e672ff9b | 5274 | } |
0731abc5 | 5275 | size_t sample_actions_len = ctx.odp_actions->size; |
9583bc14 | 5276 | |
234c3da9 BP |
5277 | if (tnl_process_ecn(flow) |
5278 | && (!in_port || may_receive(in_port, &ctx))) { | |
1806291d BP |
5279 | const struct ofpact *ofpacts; |
5280 | size_t ofpacts_len; | |
5281 | ||
5282 | if (xin->ofpacts) { | |
5283 | ofpacts = xin->ofpacts; | |
5284 | ofpacts_len = xin->ofpacts_len; | |
5285 | } else if (ctx.rule) { | |
5286 | const struct rule_actions *actions | |
5287 | = rule_dpif_get_actions(ctx.rule); | |
5288 | ofpacts = actions->ofpacts; | |
5289 | ofpacts_len = actions->ofpacts_len; | |
5290 | ctx.rule_cookie = rule_dpif_get_flow_cookie(ctx.rule); | |
5291 | } else { | |
5292 | OVS_NOT_REACHED(); | |
5293 | } | |
5294 | ||
7efbc3b7 | 5295 | mirror_ingress_packet(&ctx); |
9583bc14 | 5296 | do_xlate_actions(ofpacts, ofpacts_len, &ctx); |
fff1b9c0 JR |
5297 | if (ctx.error) { |
5298 | goto exit; | |
5299 | } | |
9583bc14 EJ |
5300 | |
5301 | /* We've let OFPP_NORMAL and the learning action look at the | |
5302 | * packet, so drop it now if forwarding is disabled. */ | |
9efd308e DV |
5303 | if (in_port && (!xport_stp_forward_state(in_port) || |
5304 | !xport_rstp_forward_state(in_port))) { | |
8ec90813 | 5305 | /* Drop all actions added by do_xlate_actions() above. */ |
1520ef4f | 5306 | ctx.odp_actions->size = sample_actions_len; |
e672ff9b JR |
5307 | |
5308 | /* Undo changes that may have been done for recirculation. */ | |
5309 | if (exit_recirculates(&ctx)) { | |
5310 | ctx.action_set.size = ctx.recirc_action_offset; | |
5311 | ctx.recirc_action_offset = -1; | |
5312 | ctx.last_unroll_offset = -1; | |
5313 | } | |
8ec90813 | 5314 | } else if (ctx.action_set.size) { |
e672ff9b JR |
5315 | /* Translate action set only if not dropping the packet and |
5316 | * not recirculating. */ | |
5317 | if (!exit_recirculates(&ctx)) { | |
5318 | xlate_action_set(&ctx); | |
5319 | } | |
5320 | } | |
5321 | /* Check if need to recirculate. */ | |
5322 | if (exit_recirculates(&ctx)) { | |
5323 | compose_recirculate_action(&ctx); | |
9583bc14 EJ |
5324 | } |
5325 | } | |
5326 | ||
e672ff9b JR |
5327 | /* Output only fully processed packets. */ |
5328 | if (!exit_recirculates(&ctx) | |
5329 | && xbridge->has_in_band | |
ce4a6b76 BP |
5330 | && in_band_must_output_to_local_port(flow) |
5331 | && !actions_output_to_local_port(&ctx)) { | |
e93ef1c7 | 5332 | compose_output_action(&ctx, OFPP_LOCAL, NULL); |
9583bc14 | 5333 | } |
aaa0fbae | 5334 | |
a6092018 BP |
5335 | if (user_cookie_offset) { |
5336 | fix_sflow_action(&ctx, user_cookie_offset); | |
e672ff9b | 5337 | } |
9583bc14 EJ |
5338 | } |
5339 | ||
1520ef4f | 5340 | if (nl_attr_oversized(ctx.odp_actions->size)) { |
542024c4 | 5341 | /* These datapath actions are too big for a Netlink attribute, so we |
0f032e95 BP |
5342 | * can't hand them to the kernel directly. dpif_execute() can execute |
5343 | * them one by one with help, so just mark the result as SLOW_ACTION to | |
5344 | * prevent the flow from being installed. */ | |
5345 | COVERAGE_INC(xlate_actions_oversize); | |
5346 | ctx.xout->slow |= SLOW_ACTION; | |
1520ef4f | 5347 | } else if (too_many_output_actions(ctx.odp_actions)) { |
7d031d7e BP |
5348 | COVERAGE_INC(xlate_actions_too_many_output); |
5349 | ctx.xout->slow |= SLOW_ACTION; | |
542024c4 BP |
5350 | } |
5351 | ||
1806291d BP |
5352 | /* Do netflow only for packets really received by the bridge and not sent |
5353 | * to the controller. We consider packets sent to the controller to be | |
5354 | * part of the control plane rather than the data plane. */ | |
5355 | if (!xin->recirc && xbridge->netflow && !(xout->slow & SLOW_CONTROLLER)) { | |
5356 | if (ctx.xin->resubmit_stats) { | |
5357 | netflow_flow_update(xbridge->netflow, flow, | |
2031ef97 | 5358 | ctx.nf_output_iface, |
1806291d BP |
5359 | ctx.xin->resubmit_stats); |
5360 | } | |
5361 | if (ctx.xin->xcache) { | |
5362 | struct xc_entry *entry; | |
b256dc52 | 5363 | |
1806291d BP |
5364 | entry = xlate_cache_add_entry(ctx.xin->xcache, XC_NETFLOW); |
5365 | entry->u.nf.netflow = netflow_ref(xbridge->netflow); | |
5366 | entry->u.nf.flow = xmemdup(flow, sizeof *flow); | |
2031ef97 | 5367 | entry->u.nf.iface = ctx.nf_output_iface; |
d6fc5f57 EJ |
5368 | } |
5369 | } | |
5370 | ||
49a73e0c | 5371 | if (xin->wc) { |
234c3da9 | 5372 | xlate_wc_finish(&ctx); |
c56fac1b | 5373 | } |
1520ef4f BP |
5374 | |
5375 | exit: | |
5376 | ofpbuf_uninit(&ctx.stack); | |
5377 | ofpbuf_uninit(&ctx.action_set); | |
5378 | ofpbuf_uninit(&scratch_actions); | |
fff1b9c0 JR |
5379 | |
5380 | /* Make sure we return a "drop flow" in case of an error. */ | |
5381 | if (ctx.error) { | |
5382 | xout->slow = 0; | |
5383 | if (xin->odp_actions) { | |
5384 | ofpbuf_clear(xin->odp_actions); | |
5385 | } | |
5386 | } | |
5387 | return ctx.error; | |
91d6cd12 AW |
5388 | } |
5389 | ||
5390 | /* Sends 'packet' out 'ofport'. | |
5391 | * May modify 'packet'. | |
5392 | * Returns 0 if successful, otherwise a positive errno value. */ | |
5393 | int | |
cf62fa4c | 5394 | xlate_send_packet(const struct ofport_dpif *ofport, struct dp_packet *packet) |
91d6cd12 | 5395 | { |
84f0f298 | 5396 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
91d6cd12 | 5397 | struct xport *xport; |
91d6cd12 | 5398 | struct ofpact_output output; |
91d6cd12 | 5399 | struct flow flow; |
91d6cd12 | 5400 | |
91d6cd12 AW |
5401 | ofpact_init(&output.ofpact, OFPACT_OUTPUT, sizeof output); |
5402 | /* Use OFPP_NONE as the in_port to avoid special packet processing. */ | |
cf62fa4c | 5403 | flow_extract(packet, &flow); |
b5e7e61a | 5404 | flow.in_port.ofp_port = OFPP_NONE; |
91d6cd12 | 5405 | |
84f0f298 | 5406 | xport = xport_lookup(xcfg, ofport); |
91d6cd12 | 5407 | if (!xport) { |
02ea2703 | 5408 | return EINVAL; |
91d6cd12 | 5409 | } |
91d6cd12 AW |
5410 | output.port = xport->ofp_port; |
5411 | output.max_len = 0; | |
e491a67a YT |
5412 | |
5413 | return ofproto_dpif_execute_actions(xport->xbridge->ofproto, &flow, NULL, | |
5414 | &output.ofpact, sizeof output, | |
5415 | packet); | |
9583bc14 | 5416 | } |
b256dc52 JS |
5417 | |
5418 | struct xlate_cache * | |
5419 | xlate_cache_new(void) | |
5420 | { | |
5421 | struct xlate_cache *xcache = xmalloc(sizeof *xcache); | |
5422 | ||
5423 | ofpbuf_init(&xcache->entries, 512); | |
5424 | return xcache; | |
5425 | } | |
5426 | ||
5427 | static struct xc_entry * | |
5428 | xlate_cache_add_entry(struct xlate_cache *xcache, enum xc_type type) | |
5429 | { | |
5430 | struct xc_entry *entry; | |
5431 | ||
5432 | entry = ofpbuf_put_zeros(&xcache->entries, sizeof *entry); | |
5433 | entry->type = type; | |
5434 | ||
5435 | return entry; | |
5436 | } | |
5437 | ||
5438 | static void | |
5439 | xlate_cache_netdev(struct xc_entry *entry, const struct dpif_flow_stats *stats) | |
5440 | { | |
5441 | if (entry->u.dev.tx) { | |
5442 | netdev_vport_inc_tx(entry->u.dev.tx, stats); | |
5443 | } | |
5444 | if (entry->u.dev.rx) { | |
5445 | netdev_vport_inc_rx(entry->u.dev.rx, stats); | |
5446 | } | |
5447 | if (entry->u.dev.bfd) { | |
5448 | bfd_account_rx(entry->u.dev.bfd, stats); | |
5449 | } | |
5450 | } | |
5451 | ||
5452 | static void | |
5453 | xlate_cache_normal(struct ofproto_dpif *ofproto, struct flow *flow, int vlan) | |
5454 | { | |
84f0f298 | 5455 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
b256dc52 JS |
5456 | struct xbridge *xbridge; |
5457 | struct xbundle *xbundle; | |
5458 | struct flow_wildcards wc; | |
5459 | ||
84f0f298 | 5460 | xbridge = xbridge_lookup(xcfg, ofproto); |
b256dc52 JS |
5461 | if (!xbridge) { |
5462 | return; | |
5463 | } | |
5464 | ||
5465 | xbundle = lookup_input_bundle(xbridge, flow->in_port.ofp_port, false, | |
5466 | NULL); | |
5467 | if (!xbundle) { | |
5468 | return; | |
5469 | } | |
5470 | ||
5471 | update_learning_table(xbridge, flow, &wc, vlan, xbundle); | |
5472 | } | |
5473 | ||
5474 | /* Push stats and perform side effects of flow translation. */ | |
5475 | void | |
0725e747 | 5476 | xlate_push_stats(struct xlate_cache *xcache, |
b256dc52 JS |
5477 | const struct dpif_flow_stats *stats) |
5478 | { | |
5479 | struct xc_entry *entry; | |
5480 | struct ofpbuf entries = xcache->entries; | |
74ff3298 | 5481 | struct eth_addr dmac; |
b256dc52 | 5482 | |
bc388583 BP |
5483 | if (!stats->n_packets) { |
5484 | return; | |
5485 | } | |
5486 | ||
b256dc52 JS |
5487 | XC_ENTRY_FOR_EACH (entry, entries, xcache) { |
5488 | switch (entry->type) { | |
5489 | case XC_RULE: | |
5490 | rule_dpif_credit_stats(entry->u.rule, stats); | |
5491 | break; | |
5492 | case XC_BOND: | |
5493 | bond_account(entry->u.bond.bond, entry->u.bond.flow, | |
5494 | entry->u.bond.vid, stats->n_bytes); | |
5495 | break; | |
5496 | case XC_NETDEV: | |
5497 | xlate_cache_netdev(entry, stats); | |
5498 | break; | |
5499 | case XC_NETFLOW: | |
5500 | netflow_flow_update(entry->u.nf.netflow, entry->u.nf.flow, | |
5501 | entry->u.nf.iface, stats); | |
5502 | break; | |
5503 | case XC_MIRROR: | |
5504 | mirror_update_stats(entry->u.mirror.mbridge, | |
5505 | entry->u.mirror.mirrors, | |
5506 | stats->n_packets, stats->n_bytes); | |
5507 | break; | |
5508 | case XC_LEARN: | |
0725e747 | 5509 | ofproto_dpif_flow_mod(entry->u.learn.ofproto, entry->u.learn.fm); |
b256dc52 JS |
5510 | break; |
5511 | case XC_NORMAL: | |
0725e747 BP |
5512 | xlate_cache_normal(entry->u.normal.ofproto, entry->u.normal.flow, |
5513 | entry->u.normal.vlan); | |
b256dc52 JS |
5514 | break; |
5515 | case XC_FIN_TIMEOUT: | |
5516 | xlate_fin_timeout__(entry->u.fin.rule, stats->tcp_flags, | |
5517 | entry->u.fin.idle, entry->u.fin.hard); | |
5518 | break; | |
1e684d7d RW |
5519 | case XC_GROUP: |
5520 | group_dpif_credit_stats(entry->u.group.group, entry->u.group.bucket, | |
5521 | stats); | |
5522 | break; | |
53902038 TLSC |
5523 | case XC_TNL_NEIGH: |
5524 | /* Lookup neighbor to avoid timeout. */ | |
0b411137 TLSC |
5525 | tnl_neigh_lookup(entry->u.tnl_neigh_cache.br_name, |
5526 | &entry->u.tnl_neigh_cache.d_ipv6, &dmac); | |
a36de779 | 5527 | break; |
b256dc52 JS |
5528 | default: |
5529 | OVS_NOT_REACHED(); | |
5530 | } | |
5531 | } | |
5532 | } | |
5533 | ||
5534 | static void | |
5535 | xlate_dev_unref(struct xc_entry *entry) | |
5536 | { | |
5537 | if (entry->u.dev.tx) { | |
5538 | netdev_close(entry->u.dev.tx); | |
5539 | } | |
5540 | if (entry->u.dev.rx) { | |
5541 | netdev_close(entry->u.dev.rx); | |
5542 | } | |
5543 | if (entry->u.dev.bfd) { | |
5544 | bfd_unref(entry->u.dev.bfd); | |
5545 | } | |
5546 | } | |
5547 | ||
5548 | static void | |
5549 | xlate_cache_clear_netflow(struct netflow *netflow, struct flow *flow) | |
5550 | { | |
b256dc52 JS |
5551 | netflow_flow_clear(netflow, flow); |
5552 | netflow_unref(netflow); | |
5553 | free(flow); | |
5554 | } | |
5555 | ||
5556 | void | |
5557 | xlate_cache_clear(struct xlate_cache *xcache) | |
5558 | { | |
5559 | struct xc_entry *entry; | |
5560 | struct ofpbuf entries; | |
5561 | ||
5562 | if (!xcache) { | |
5563 | return; | |
5564 | } | |
5565 | ||
5566 | XC_ENTRY_FOR_EACH (entry, entries, xcache) { | |
5567 | switch (entry->type) { | |
5568 | case XC_RULE: | |
5569 | rule_dpif_unref(entry->u.rule); | |
5570 | break; | |
5571 | case XC_BOND: | |
5572 | free(entry->u.bond.flow); | |
5573 | bond_unref(entry->u.bond.bond); | |
5574 | break; | |
5575 | case XC_NETDEV: | |
5576 | xlate_dev_unref(entry); | |
5577 | break; | |
5578 | case XC_NETFLOW: | |
5579 | xlate_cache_clear_netflow(entry->u.nf.netflow, entry->u.nf.flow); | |
5580 | break; | |
5581 | case XC_MIRROR: | |
5582 | mbridge_unref(entry->u.mirror.mbridge); | |
5583 | break; | |
5584 | case XC_LEARN: | |
4165b5e0 JS |
5585 | free(entry->u.learn.fm); |
5586 | ofpbuf_delete(entry->u.learn.ofpacts); | |
b256dc52 JS |
5587 | break; |
5588 | case XC_NORMAL: | |
5589 | free(entry->u.normal.flow); | |
5590 | break; | |
5591 | case XC_FIN_TIMEOUT: | |
83709dfa JR |
5592 | /* 'u.fin.rule' is always already held as a XC_RULE, which |
5593 | * has already released it's reference above. */ | |
b256dc52 | 5594 | break; |
1e684d7d RW |
5595 | case XC_GROUP: |
5596 | group_dpif_unref(entry->u.group.group); | |
5597 | break; | |
53902038 | 5598 | case XC_TNL_NEIGH: |
a36de779 | 5599 | break; |
b256dc52 JS |
5600 | default: |
5601 | OVS_NOT_REACHED(); | |
5602 | } | |
5603 | } | |
5604 | ||
5605 | ofpbuf_clear(&xcache->entries); | |
5606 | } | |
5607 | ||
5608 | void | |
5609 | xlate_cache_delete(struct xlate_cache *xcache) | |
5610 | { | |
5611 | xlate_cache_clear(xcache); | |
5612 | ofpbuf_uninit(&xcache->entries); | |
5613 | free(xcache); | |
5614 | } |