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0934ebba | 1 | /* Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014 Nicira, Inc. |
9583bc14 EJ |
2 | * |
3 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
4 | * you may not use this file except in compliance with the License. | |
5 | * You may obtain a copy of the License at: | |
6 | * | |
7 | * http://www.apache.org/licenses/LICENSE-2.0 | |
8 | * | |
9 | * Unless required by applicable law or agreed to in writing, software | |
10 | * distributed under the License is distributed on an "AS IS" BASIS, | |
11 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
12 | * See the License for the specific language governing permissions and | |
13 | * limitations under the License. */ | |
14 | ||
15 | #include <config.h> | |
16 | ||
17 | #include "ofproto/ofproto-dpif-xlate.h" | |
18 | ||
8449c4d6 EJ |
19 | #include <errno.h> |
20 | ||
db7d4e46 | 21 | #include "bfd.h" |
9583bc14 EJ |
22 | #include "bitmap.h" |
23 | #include "bond.h" | |
24 | #include "bundle.h" | |
25 | #include "byte-order.h" | |
db7d4e46 | 26 | #include "cfm.h" |
9583bc14 EJ |
27 | #include "connmgr.h" |
28 | #include "coverage.h" | |
29 | #include "dpif.h" | |
30 | #include "dynamic-string.h" | |
f7f1ea29 | 31 | #include "in-band.h" |
db7d4e46 | 32 | #include "lacp.h" |
9583bc14 | 33 | #include "learn.h" |
46c88433 | 34 | #include "list.h" |
9583bc14 | 35 | #include "mac-learning.h" |
6d95c4e8 | 36 | #include "mcast-snooping.h" |
9583bc14 EJ |
37 | #include "meta-flow.h" |
38 | #include "multipath.h" | |
39 | #include "netdev-vport.h" | |
40 | #include "netlink.h" | |
41 | #include "nx-match.h" | |
42 | #include "odp-execute.h" | |
43 | #include "ofp-actions.h" | |
44 | #include "ofproto/ofproto-dpif-ipfix.h" | |
ec7ceaed | 45 | #include "ofproto/ofproto-dpif-mirror.h" |
60d02c72 | 46 | #include "ofproto/ofproto-dpif-monitor.h" |
9583bc14 EJ |
47 | #include "ofproto/ofproto-dpif-sflow.h" |
48 | #include "ofproto/ofproto-dpif.h" | |
6f00e29b | 49 | #include "ofproto/ofproto-provider.h" |
91088554 | 50 | #include "packet-dpif.h" |
9583bc14 EJ |
51 | #include "tunnel.h" |
52 | #include "vlog.h" | |
53 | ||
46c88433 | 54 | COVERAGE_DEFINE(xlate_actions); |
0f032e95 | 55 | COVERAGE_DEFINE(xlate_actions_oversize); |
8bfd0fda | 56 | COVERAGE_DEFINE(xlate_actions_mpls_overflow); |
9583bc14 EJ |
57 | |
58 | VLOG_DEFINE_THIS_MODULE(ofproto_dpif_xlate); | |
59 | ||
8a553e9a EJ |
60 | /* Maximum depth of flow table recursion (due to resubmit actions) in a |
61 | * flow translation. */ | |
62 | #define MAX_RESUBMIT_RECURSION 64 | |
adcf00ba AZ |
63 | #define MAX_INTERNAL_RESUBMITS 1 /* Max resbmits allowed using rules in |
64 | internal table. */ | |
8a553e9a | 65 | |
7bbdd84f SH |
66 | /* Timeout for internal rules created to handle recirculation */ |
67 | #define RECIRC_TIMEOUT 60 | |
68 | ||
98b07853 BP |
69 | /* Maximum number of resubmit actions in a flow translation, whether they are |
70 | * recursive or not. */ | |
71 | #define MAX_RESUBMITS (MAX_RESUBMIT_RECURSION * MAX_RESUBMIT_RECURSION) | |
72 | ||
46c88433 EJ |
73 | struct xbridge { |
74 | struct hmap_node hmap_node; /* Node in global 'xbridges' map. */ | |
75 | struct ofproto_dpif *ofproto; /* Key in global 'xbridges' map. */ | |
76 | ||
77 | struct list xbundles; /* Owned xbundles. */ | |
78 | struct hmap xports; /* Indexed by ofp_port. */ | |
79 | ||
80 | char *name; /* Name used in log messages. */ | |
89a8a7f0 | 81 | struct dpif *dpif; /* Datapath interface. */ |
46c88433 | 82 | struct mac_learning *ml; /* Mac learning handle. */ |
6d95c4e8 | 83 | struct mcast_snooping *ms; /* Multicast Snooping handle. */ |
46c88433 EJ |
84 | struct mbridge *mbridge; /* Mirroring. */ |
85 | struct dpif_sflow *sflow; /* SFlow handle, or null. */ | |
86 | struct dpif_ipfix *ipfix; /* Ipfix handle, or null. */ | |
ce3955be | 87 | struct netflow *netflow; /* Netflow handle, or null. */ |
9d189a50 | 88 | struct stp *stp; /* STP or null if disabled. */ |
46c88433 | 89 | |
ec89fc6f EJ |
90 | /* Special rules installed by ofproto-dpif. */ |
91 | struct rule_dpif *miss_rule; | |
92 | struct rule_dpif *no_packet_in_rule; | |
93 | ||
46c88433 | 94 | enum ofp_config_flags frag; /* Fragmentation handling. */ |
46c88433 EJ |
95 | bool has_in_band; /* Bridge has in band control? */ |
96 | bool forward_bpdu; /* Bridge forwards STP BPDUs? */ | |
4b97b70d | 97 | |
adcf00ba AZ |
98 | /* True if the datapath supports recirculation. */ |
99 | bool enable_recirc; | |
100 | ||
4b97b70d BP |
101 | /* True if the datapath supports variable-length |
102 | * OVS_USERSPACE_ATTR_USERDATA in OVS_ACTION_ATTR_USERSPACE actions. | |
103 | * False if the datapath supports only 8-byte (or shorter) userdata. */ | |
104 | bool variable_length_userdata; | |
8bfd0fda BP |
105 | |
106 | /* Number of MPLS label stack entries that the datapath supports | |
107 | * in matches. */ | |
108 | size_t max_mpls_depth; | |
46c88433 EJ |
109 | }; |
110 | ||
111 | struct xbundle { | |
112 | struct hmap_node hmap_node; /* In global 'xbundles' map. */ | |
113 | struct ofbundle *ofbundle; /* Key in global 'xbundles' map. */ | |
114 | ||
115 | struct list list_node; /* In parent 'xbridges' list. */ | |
116 | struct xbridge *xbridge; /* Parent xbridge. */ | |
117 | ||
118 | struct list xports; /* Contains "struct xport"s. */ | |
119 | ||
120 | char *name; /* Name used in log messages. */ | |
121 | struct bond *bond; /* Nonnull iff more than one port. */ | |
122 | struct lacp *lacp; /* LACP handle or null. */ | |
123 | ||
124 | enum port_vlan_mode vlan_mode; /* VLAN mode. */ | |
125 | int vlan; /* -1=trunk port, else a 12-bit VLAN ID. */ | |
126 | unsigned long *trunks; /* Bitmap of trunked VLANs, if 'vlan' == -1. | |
127 | * NULL if all VLANs are trunked. */ | |
128 | bool use_priority_tags; /* Use 802.1p tag for frames in VLAN 0? */ | |
129 | bool floodable; /* No port has OFPUTIL_PC_NO_FLOOD set? */ | |
130 | }; | |
131 | ||
132 | struct xport { | |
133 | struct hmap_node hmap_node; /* Node in global 'xports' map. */ | |
134 | struct ofport_dpif *ofport; /* Key in global 'xports map. */ | |
135 | ||
136 | struct hmap_node ofp_node; /* Node in parent xbridge 'xports' map. */ | |
137 | ofp_port_t ofp_port; /* Key in parent xbridge 'xports' map. */ | |
138 | ||
139 | odp_port_t odp_port; /* Datapath port number or ODPP_NONE. */ | |
140 | ||
141 | struct list bundle_node; /* In parent xbundle (if it exists). */ | |
142 | struct xbundle *xbundle; /* Parent xbundle or null. */ | |
143 | ||
144 | struct netdev *netdev; /* 'ofport''s netdev. */ | |
145 | ||
146 | struct xbridge *xbridge; /* Parent bridge. */ | |
147 | struct xport *peer; /* Patch port peer or null. */ | |
148 | ||
149 | enum ofputil_port_config config; /* OpenFlow port configuration. */ | |
dd8cd4b4 | 150 | enum ofputil_port_state state; /* OpenFlow port state. */ |
92cf817b | 151 | int stp_port_no; /* STP port number or -1 if not in use. */ |
46c88433 | 152 | |
55954f6e EJ |
153 | struct hmap skb_priorities; /* Map of 'skb_priority_to_dscp's. */ |
154 | ||
46c88433 EJ |
155 | bool may_enable; /* May be enabled in bonds. */ |
156 | bool is_tunnel; /* Is a tunnel port. */ | |
157 | ||
158 | struct cfm *cfm; /* CFM handle or null. */ | |
159 | struct bfd *bfd; /* BFD handle or null. */ | |
160 | }; | |
161 | ||
4d0acc70 EJ |
162 | struct xlate_ctx { |
163 | struct xlate_in *xin; | |
164 | struct xlate_out *xout; | |
165 | ||
46c88433 | 166 | const struct xbridge *xbridge; |
4d0acc70 EJ |
167 | |
168 | /* Flow at the last commit. */ | |
169 | struct flow base_flow; | |
170 | ||
171 | /* Tunnel IP destination address as received. This is stored separately | |
172 | * as the base_flow.tunnel is cleared on init to reflect the datapath | |
173 | * behavior. Used to make sure not to send tunneled output to ourselves, | |
174 | * which might lead to an infinite loop. This could happen easily | |
175 | * if a tunnel is marked as 'ip_remote=flow', and the flow does not | |
176 | * actually set the tun_dst field. */ | |
177 | ovs_be32 orig_tunnel_ip_dst; | |
178 | ||
179 | /* Stack for the push and pop actions. Each stack element is of type | |
180 | * "union mf_subvalue". */ | |
181 | union mf_subvalue init_stack[1024 / sizeof(union mf_subvalue)]; | |
182 | struct ofpbuf stack; | |
183 | ||
184 | /* The rule that we are currently translating, or NULL. */ | |
185 | struct rule_dpif *rule; | |
186 | ||
98b07853 BP |
187 | /* Resubmit statistics, via xlate_table_action(). */ |
188 | int recurse; /* Current resubmit nesting depth. */ | |
189 | int resubmits; /* Total number of resubmits. */ | |
5a070238 | 190 | bool in_group; /* Currently translating ofgroup, if true. */ |
98b07853 | 191 | |
4d0acc70 EJ |
192 | uint32_t orig_skb_priority; /* Priority when packet arrived. */ |
193 | uint8_t table_id; /* OpenFlow table ID where flow was found. */ | |
194 | uint32_t sflow_n_outputs; /* Number of output ports. */ | |
4e022ec0 | 195 | odp_port_t sflow_odp_port; /* Output port for composing sFlow action. */ |
4d0acc70 EJ |
196 | uint16_t user_cookie_offset;/* Used for user_action_cookie fixup. */ |
197 | bool exit; /* No further actions should be processed. */ | |
7fdb60a7 | 198 | |
92c08f09 SH |
199 | bool use_recirc; /* Should generate recirc? */ |
200 | struct xlate_recirc recirc; /* Information used for generating | |
201 | * recirculation actions */ | |
202 | ||
7bbdd84f SH |
203 | /* True if a packet was but is no longer MPLS (due to an MPLS pop action). |
204 | * This is a trigger for recirculation in cases where translating an action | |
205 | * or looking up a flow requires access to the fields of the packet after | |
206 | * the MPLS label stack that was originally present. */ | |
207 | bool was_mpls; | |
208 | ||
7fdb60a7 SH |
209 | /* OpenFlow 1.1+ action set. |
210 | * | |
211 | * 'action_set' accumulates "struct ofpact"s added by OFPACT_WRITE_ACTIONS. | |
212 | * When translation is otherwise complete, ofpacts_execute_action_set() | |
213 | * converts it to a set of "struct ofpact"s that can be translated into | |
214 | * datapath actions. */ | |
215 | struct ofpbuf action_set; /* Action set. */ | |
216 | uint64_t action_set_stub[1024 / 8]; | |
4d0acc70 EJ |
217 | }; |
218 | ||
9583bc14 EJ |
219 | /* A controller may use OFPP_NONE as the ingress port to indicate that |
220 | * it did not arrive on a "real" port. 'ofpp_none_bundle' exists for | |
221 | * when an input bundle is needed for validation (e.g., mirroring or | |
222 | * OFPP_NORMAL processing). It is not connected to an 'ofproto' or have | |
3548d242 BP |
223 | * any 'port' structs, so care must be taken when dealing with it. */ |
224 | static struct xbundle ofpp_none_bundle = { | |
225 | .name = "OFPP_NONE", | |
226 | .vlan_mode = PORT_VLAN_TRUNK | |
227 | }; | |
9583bc14 | 228 | |
55954f6e EJ |
229 | /* Node in 'xport''s 'skb_priorities' map. Used to maintain a map from |
230 | * 'priority' (the datapath's term for QoS queue) to the dscp bits which all | |
231 | * traffic egressing the 'ofport' with that priority should be marked with. */ | |
232 | struct skb_priority_to_dscp { | |
233 | struct hmap_node hmap_node; /* Node in 'ofport_dpif''s 'skb_priorities'. */ | |
234 | uint32_t skb_priority; /* Priority of this queue (see struct flow). */ | |
235 | ||
236 | uint8_t dscp; /* DSCP bits to mark outgoing traffic with. */ | |
237 | }; | |
238 | ||
b256dc52 JS |
239 | enum xc_type { |
240 | XC_RULE, | |
241 | XC_BOND, | |
242 | XC_NETDEV, | |
243 | XC_NETFLOW, | |
244 | XC_MIRROR, | |
245 | XC_LEARN, | |
246 | XC_NORMAL, | |
247 | XC_FIN_TIMEOUT, | |
1e684d7d | 248 | XC_GROUP, |
b256dc52 JS |
249 | }; |
250 | ||
251 | /* xlate_cache entries hold enough information to perform the side effects of | |
252 | * xlate_actions() for a rule, without needing to perform rule translation | |
253 | * from scratch. The primary usage of these is to submit statistics to objects | |
254 | * that a flow relates to, although they may be used for other effects as well | |
255 | * (for instance, refreshing hard timeouts for learned flows). */ | |
256 | struct xc_entry { | |
257 | enum xc_type type; | |
258 | union { | |
259 | struct rule_dpif *rule; | |
260 | struct { | |
261 | struct netdev *tx; | |
262 | struct netdev *rx; | |
263 | struct bfd *bfd; | |
264 | } dev; | |
265 | struct { | |
266 | struct netflow *netflow; | |
267 | struct flow *flow; | |
268 | ofp_port_t iface; | |
269 | } nf; | |
270 | struct { | |
271 | struct mbridge *mbridge; | |
272 | mirror_mask_t mirrors; | |
273 | } mirror; | |
274 | struct { | |
275 | struct bond *bond; | |
276 | struct flow *flow; | |
277 | uint16_t vid; | |
278 | } bond; | |
279 | struct { | |
4165b5e0 JS |
280 | struct ofproto_dpif *ofproto; |
281 | struct ofputil_flow_mod *fm; | |
282 | struct ofpbuf *ofpacts; | |
b256dc52 JS |
283 | } learn; |
284 | struct { | |
285 | struct ofproto_dpif *ofproto; | |
286 | struct flow *flow; | |
287 | int vlan; | |
288 | } normal; | |
289 | struct { | |
290 | struct rule_dpif *rule; | |
291 | uint16_t idle; | |
292 | uint16_t hard; | |
293 | } fin; | |
1e684d7d RW |
294 | struct { |
295 | struct group_dpif *group; | |
296 | struct ofputil_bucket *bucket; | |
297 | } group; | |
b256dc52 JS |
298 | } u; |
299 | }; | |
300 | ||
301 | #define XC_ENTRY_FOR_EACH(entry, entries, xcache) \ | |
302 | entries = xcache->entries; \ | |
303 | for (entry = ofpbuf_try_pull(&entries, sizeof *entry); \ | |
304 | entry; \ | |
305 | entry = ofpbuf_try_pull(&entries, sizeof *entry)) | |
306 | ||
307 | struct xlate_cache { | |
308 | struct ofpbuf entries; | |
309 | }; | |
310 | ||
84f0f298 RW |
311 | /* Xlate config contains hash maps of all bridges, bundles and ports. |
312 | * Xcfgp contains the pointer to the current xlate configuration. | |
313 | * When the main thread needs to change the configuration, it copies xcfgp to | |
314 | * new_xcfg and edits new_xcfg. This enables the use of RCU locking which | |
315 | * does not block handler and revalidator threads. */ | |
316 | struct xlate_cfg { | |
317 | struct hmap xbridges; | |
318 | struct hmap xbundles; | |
319 | struct hmap xports; | |
320 | }; | |
f439f23b BP |
321 | static OVSRCU_TYPE(struct xlate_cfg *) xcfgp = OVSRCU_TYPE_INITIALIZER; |
322 | static struct xlate_cfg *new_xcfg = NULL; | |
46c88433 EJ |
323 | |
324 | static bool may_receive(const struct xport *, struct xlate_ctx *); | |
9583bc14 EJ |
325 | static void do_xlate_actions(const struct ofpact *, size_t ofpacts_len, |
326 | struct xlate_ctx *); | |
adcf00ba AZ |
327 | static void xlate_normal(struct xlate_ctx *); |
328 | static void xlate_report(struct xlate_ctx *, const char *); | |
6d328fa2 SH |
329 | static void xlate_table_action(struct xlate_ctx *, ofp_port_t in_port, |
330 | uint8_t table_id, bool may_packet_in, | |
331 | bool honor_table_miss); | |
46c88433 EJ |
332 | static bool input_vid_is_valid(uint16_t vid, struct xbundle *, bool warn); |
333 | static uint16_t input_vid_to_vlan(const struct xbundle *, uint16_t vid); | |
334 | static void output_normal(struct xlate_ctx *, const struct xbundle *, | |
9583bc14 | 335 | uint16_t vlan); |
4e022ec0 | 336 | static void compose_output_action(struct xlate_ctx *, ofp_port_t ofp_port); |
9583bc14 | 337 | |
84f0f298 RW |
338 | static struct xbridge *xbridge_lookup(struct xlate_cfg *, |
339 | const struct ofproto_dpif *); | |
340 | static struct xbundle *xbundle_lookup(struct xlate_cfg *, | |
341 | const struct ofbundle *); | |
342 | static struct xport *xport_lookup(struct xlate_cfg *, | |
343 | const struct ofport_dpif *); | |
46c88433 | 344 | static struct xport *get_ofp_port(const struct xbridge *, ofp_port_t ofp_port); |
55954f6e EJ |
345 | static struct skb_priority_to_dscp *get_skb_priority(const struct xport *, |
346 | uint32_t skb_priority); | |
347 | static void clear_skb_priorities(struct xport *); | |
348 | static bool dscp_from_skb_priority(const struct xport *, uint32_t skb_priority, | |
349 | uint8_t *dscp); | |
46c88433 | 350 | |
b256dc52 JS |
351 | static struct xc_entry *xlate_cache_add_entry(struct xlate_cache *xc, |
352 | enum xc_type type); | |
84f0f298 RW |
353 | static void xlate_xbridge_init(struct xlate_cfg *, struct xbridge *); |
354 | static void xlate_xbundle_init(struct xlate_cfg *, struct xbundle *); | |
355 | static void xlate_xport_init(struct xlate_cfg *, struct xport *); | |
356 | static void xlate_xbridge_set(struct xbridge *xbridge, | |
357 | struct dpif *dpif, | |
358 | struct rule_dpif *miss_rule, | |
359 | struct rule_dpif *no_packet_in_rule, | |
360 | const struct mac_learning *ml, struct stp *stp, | |
6d95c4e8 | 361 | const struct mcast_snooping *ms, |
84f0f298 RW |
362 | const struct mbridge *mbridge, |
363 | const struct dpif_sflow *sflow, | |
364 | const struct dpif_ipfix *ipfix, | |
365 | const struct netflow *netflow, | |
366 | enum ofp_config_flags frag, | |
367 | bool forward_bpdu, bool has_in_band, | |
368 | bool enable_recirc, | |
369 | bool variable_length_userdata, | |
370 | size_t max_mpls_depth); | |
371 | static void xlate_xbundle_set(struct xbundle *xbundle, | |
372 | enum port_vlan_mode vlan_mode, int vlan, | |
373 | unsigned long *trunks, bool use_priority_tags, | |
374 | const struct bond *bond, const struct lacp *lacp, | |
375 | bool floodable); | |
376 | static void xlate_xport_set(struct xport *xport, odp_port_t odp_port, | |
377 | const struct netdev *netdev, const struct cfm *cfm, | |
378 | const struct bfd *bfd, int stp_port_no, | |
379 | enum ofputil_port_config config, | |
380 | enum ofputil_port_state state, bool is_tunnel, | |
381 | bool may_enable); | |
382 | static void xlate_xbridge_remove(struct xlate_cfg *, struct xbridge *); | |
383 | static void xlate_xbundle_remove(struct xlate_cfg *, struct xbundle *); | |
384 | static void xlate_xport_remove(struct xlate_cfg *, struct xport *); | |
385 | static void xlate_xbridge_copy(struct xbridge *); | |
386 | static void xlate_xbundle_copy(struct xbridge *, struct xbundle *); | |
387 | static void xlate_xport_copy(struct xbridge *, struct xbundle *, | |
388 | struct xport *); | |
389 | static void xlate_xcfg_free(struct xlate_cfg *); | |
b256dc52 | 390 | |
84f0f298 RW |
391 | |
392 | static void | |
393 | xlate_xbridge_init(struct xlate_cfg *xcfg, struct xbridge *xbridge) | |
394 | { | |
395 | list_init(&xbridge->xbundles); | |
396 | hmap_init(&xbridge->xports); | |
397 | hmap_insert(&xcfg->xbridges, &xbridge->hmap_node, | |
398 | hash_pointer(xbridge->ofproto, 0)); | |
399 | } | |
400 | ||
401 | static void | |
402 | xlate_xbundle_init(struct xlate_cfg *xcfg, struct xbundle *xbundle) | |
403 | { | |
404 | list_init(&xbundle->xports); | |
405 | list_insert(&xbundle->xbridge->xbundles, &xbundle->list_node); | |
406 | hmap_insert(&xcfg->xbundles, &xbundle->hmap_node, | |
407 | hash_pointer(xbundle->ofbundle, 0)); | |
408 | } | |
409 | ||
410 | static void | |
411 | xlate_xport_init(struct xlate_cfg *xcfg, struct xport *xport) | |
412 | { | |
413 | hmap_init(&xport->skb_priorities); | |
414 | hmap_insert(&xcfg->xports, &xport->hmap_node, | |
415 | hash_pointer(xport->ofport, 0)); | |
416 | hmap_insert(&xport->xbridge->xports, &xport->ofp_node, | |
417 | hash_ofp_port(xport->ofp_port)); | |
418 | } | |
419 | ||
420 | static void | |
421 | xlate_xbridge_set(struct xbridge *xbridge, | |
422 | struct dpif *dpif, | |
423 | struct rule_dpif *miss_rule, | |
ec89fc6f EJ |
424 | struct rule_dpif *no_packet_in_rule, |
425 | const struct mac_learning *ml, struct stp *stp, | |
6d95c4e8 | 426 | const struct mcast_snooping *ms, |
ec89fc6f | 427 | const struct mbridge *mbridge, |
46c88433 | 428 | const struct dpif_sflow *sflow, |
ce3955be EJ |
429 | const struct dpif_ipfix *ipfix, |
430 | const struct netflow *netflow, enum ofp_config_flags frag, | |
4b97b70d | 431 | bool forward_bpdu, bool has_in_band, |
adcf00ba | 432 | bool enable_recirc, |
8bfd0fda BP |
433 | bool variable_length_userdata, |
434 | size_t max_mpls_depth) | |
46c88433 | 435 | { |
46c88433 EJ |
436 | if (xbridge->ml != ml) { |
437 | mac_learning_unref(xbridge->ml); | |
438 | xbridge->ml = mac_learning_ref(ml); | |
439 | } | |
440 | ||
6d95c4e8 FL |
441 | if (xbridge->ms != ms) { |
442 | mcast_snooping_unref(xbridge->ms); | |
443 | xbridge->ms = mcast_snooping_ref(ms); | |
444 | } | |
445 | ||
46c88433 EJ |
446 | if (xbridge->mbridge != mbridge) { |
447 | mbridge_unref(xbridge->mbridge); | |
448 | xbridge->mbridge = mbridge_ref(mbridge); | |
449 | } | |
450 | ||
451 | if (xbridge->sflow != sflow) { | |
452 | dpif_sflow_unref(xbridge->sflow); | |
453 | xbridge->sflow = dpif_sflow_ref(sflow); | |
454 | } | |
455 | ||
456 | if (xbridge->ipfix != ipfix) { | |
457 | dpif_ipfix_unref(xbridge->ipfix); | |
458 | xbridge->ipfix = dpif_ipfix_ref(ipfix); | |
459 | } | |
460 | ||
9d189a50 EJ |
461 | if (xbridge->stp != stp) { |
462 | stp_unref(xbridge->stp); | |
463 | xbridge->stp = stp_ref(stp); | |
464 | } | |
465 | ||
ce3955be EJ |
466 | if (xbridge->netflow != netflow) { |
467 | netflow_unref(xbridge->netflow); | |
468 | xbridge->netflow = netflow_ref(netflow); | |
469 | } | |
470 | ||
89a8a7f0 | 471 | xbridge->dpif = dpif; |
46c88433 EJ |
472 | xbridge->forward_bpdu = forward_bpdu; |
473 | xbridge->has_in_band = has_in_band; | |
46c88433 | 474 | xbridge->frag = frag; |
ec89fc6f EJ |
475 | xbridge->miss_rule = miss_rule; |
476 | xbridge->no_packet_in_rule = no_packet_in_rule; | |
adcf00ba | 477 | xbridge->enable_recirc = enable_recirc; |
4b97b70d | 478 | xbridge->variable_length_userdata = variable_length_userdata; |
8bfd0fda | 479 | xbridge->max_mpls_depth = max_mpls_depth; |
46c88433 EJ |
480 | } |
481 | ||
84f0f298 RW |
482 | static void |
483 | xlate_xbundle_set(struct xbundle *xbundle, | |
484 | enum port_vlan_mode vlan_mode, int vlan, | |
485 | unsigned long *trunks, bool use_priority_tags, | |
486 | const struct bond *bond, const struct lacp *lacp, | |
487 | bool floodable) | |
488 | { | |
489 | ovs_assert(xbundle->xbridge); | |
490 | ||
491 | xbundle->vlan_mode = vlan_mode; | |
492 | xbundle->vlan = vlan; | |
493 | xbundle->trunks = trunks; | |
494 | xbundle->use_priority_tags = use_priority_tags; | |
495 | xbundle->floodable = floodable; | |
496 | ||
497 | if (xbundle->bond != bond) { | |
498 | bond_unref(xbundle->bond); | |
499 | xbundle->bond = bond_ref(bond); | |
500 | } | |
501 | ||
502 | if (xbundle->lacp != lacp) { | |
503 | lacp_unref(xbundle->lacp); | |
504 | xbundle->lacp = lacp_ref(lacp); | |
505 | } | |
506 | } | |
507 | ||
508 | static void | |
509 | xlate_xport_set(struct xport *xport, odp_port_t odp_port, | |
510 | const struct netdev *netdev, const struct cfm *cfm, | |
511 | const struct bfd *bfd, int stp_port_no, | |
512 | enum ofputil_port_config config, enum ofputil_port_state state, | |
513 | bool is_tunnel, bool may_enable) | |
514 | { | |
515 | xport->config = config; | |
516 | xport->state = state; | |
517 | xport->stp_port_no = stp_port_no; | |
518 | xport->is_tunnel = is_tunnel; | |
519 | xport->may_enable = may_enable; | |
520 | xport->odp_port = odp_port; | |
521 | ||
522 | if (xport->cfm != cfm) { | |
523 | cfm_unref(xport->cfm); | |
524 | xport->cfm = cfm_ref(cfm); | |
525 | } | |
526 | ||
527 | if (xport->bfd != bfd) { | |
528 | bfd_unref(xport->bfd); | |
529 | xport->bfd = bfd_ref(bfd); | |
530 | } | |
531 | ||
532 | if (xport->netdev != netdev) { | |
533 | netdev_close(xport->netdev); | |
534 | xport->netdev = netdev_ref(netdev); | |
535 | } | |
536 | } | |
537 | ||
538 | static void | |
539 | xlate_xbridge_copy(struct xbridge *xbridge) | |
540 | { | |
541 | struct xbundle *xbundle; | |
542 | struct xport *xport; | |
543 | struct xbridge *new_xbridge = xzalloc(sizeof *xbridge); | |
544 | new_xbridge->ofproto = xbridge->ofproto; | |
545 | new_xbridge->name = xstrdup(xbridge->name); | |
546 | xlate_xbridge_init(new_xcfg, new_xbridge); | |
547 | ||
548 | xlate_xbridge_set(new_xbridge, | |
549 | xbridge->dpif, xbridge->miss_rule, | |
550 | xbridge->no_packet_in_rule, xbridge->ml, xbridge->stp, | |
6d95c4e8 FL |
551 | xbridge->ms, xbridge->mbridge, xbridge->sflow, |
552 | xbridge->ipfix, xbridge->netflow, xbridge->frag, | |
553 | xbridge->forward_bpdu, xbridge->has_in_band, | |
554 | xbridge->enable_recirc, xbridge->variable_length_userdata, | |
84f0f298 RW |
555 | xbridge->max_mpls_depth); |
556 | LIST_FOR_EACH (xbundle, list_node, &xbridge->xbundles) { | |
557 | xlate_xbundle_copy(new_xbridge, xbundle); | |
558 | } | |
559 | ||
560 | /* Copy xports which are not part of a xbundle */ | |
561 | HMAP_FOR_EACH (xport, ofp_node, &xbridge->xports) { | |
562 | if (!xport->xbundle) { | |
563 | xlate_xport_copy(new_xbridge, NULL, xport); | |
564 | } | |
565 | } | |
566 | } | |
567 | ||
568 | static void | |
569 | xlate_xbundle_copy(struct xbridge *xbridge, struct xbundle *xbundle) | |
570 | { | |
571 | struct xport *xport; | |
572 | struct xbundle *new_xbundle = xzalloc(sizeof *xbundle); | |
573 | new_xbundle->ofbundle = xbundle->ofbundle; | |
574 | new_xbundle->xbridge = xbridge; | |
575 | new_xbundle->name = xstrdup(xbundle->name); | |
576 | xlate_xbundle_init(new_xcfg, new_xbundle); | |
577 | ||
578 | xlate_xbundle_set(new_xbundle, xbundle->vlan_mode, | |
579 | xbundle->vlan, xbundle->trunks, | |
580 | xbundle->use_priority_tags, xbundle->bond, xbundle->lacp, | |
581 | xbundle->floodable); | |
582 | LIST_FOR_EACH (xport, bundle_node, &xbundle->xports) { | |
583 | xlate_xport_copy(xbridge, new_xbundle, xport); | |
584 | } | |
585 | } | |
586 | ||
587 | static void | |
588 | xlate_xport_copy(struct xbridge *xbridge, struct xbundle *xbundle, | |
589 | struct xport *xport) | |
590 | { | |
591 | struct skb_priority_to_dscp *pdscp, *new_pdscp; | |
592 | struct xport *new_xport = xzalloc(sizeof *xport); | |
593 | new_xport->ofport = xport->ofport; | |
594 | new_xport->ofp_port = xport->ofp_port; | |
595 | new_xport->xbridge = xbridge; | |
596 | xlate_xport_init(new_xcfg, new_xport); | |
597 | ||
598 | xlate_xport_set(new_xport, xport->odp_port, xport->netdev, xport->cfm, | |
599 | xport->bfd, xport->stp_port_no, xport->config, xport->state, | |
600 | xport->is_tunnel, xport->may_enable); | |
601 | ||
602 | if (xport->peer) { | |
603 | struct xport *peer = xport_lookup(new_xcfg, xport->peer->ofport); | |
604 | if (peer) { | |
605 | new_xport->peer = peer; | |
606 | new_xport->peer->peer = new_xport; | |
607 | } | |
608 | } | |
609 | ||
610 | if (xbundle) { | |
611 | new_xport->xbundle = xbundle; | |
612 | list_insert(&new_xport->xbundle->xports, &new_xport->bundle_node); | |
613 | } | |
614 | ||
615 | HMAP_FOR_EACH (pdscp, hmap_node, &xport->skb_priorities) { | |
616 | new_pdscp = xmalloc(sizeof *pdscp); | |
617 | new_pdscp->skb_priority = pdscp->skb_priority; | |
618 | new_pdscp->dscp = pdscp->dscp; | |
619 | hmap_insert(&new_xport->skb_priorities, &new_pdscp->hmap_node, | |
620 | hash_int(new_pdscp->skb_priority, 0)); | |
621 | } | |
622 | } | |
623 | ||
624 | /* Sets the current xlate configuration to new_xcfg and frees the old xlate | |
625 | * configuration in xcfgp. | |
626 | * | |
627 | * This needs to be called after editing the xlate configuration. | |
628 | * | |
629 | * Functions that edit the new xlate configuration are | |
630 | * xlate_<ofport/bundle/ofport>_set and xlate_<ofport/bundle/ofport>_remove. | |
631 | * | |
632 | * A sample workflow: | |
633 | * | |
634 | * xlate_txn_start(); | |
635 | * ... | |
636 | * edit_xlate_configuration(); | |
637 | * ... | |
638 | * xlate_txn_commit(); */ | |
46c88433 | 639 | void |
84f0f298 RW |
640 | xlate_txn_commit(void) |
641 | { | |
642 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
643 | ||
644 | ovsrcu_set(&xcfgp, new_xcfg); | |
645 | ovsrcu_postpone(xlate_xcfg_free, xcfg); | |
646 | ||
647 | new_xcfg = NULL; | |
648 | } | |
649 | ||
650 | /* Copies the current xlate configuration in xcfgp to new_xcfg. | |
651 | * | |
652 | * This needs to be called prior to editing the xlate configuration. */ | |
653 | void | |
654 | xlate_txn_start(void) | |
655 | { | |
656 | struct xbridge *xbridge; | |
657 | struct xlate_cfg *xcfg; | |
658 | ||
659 | ovs_assert(!new_xcfg); | |
660 | ||
661 | new_xcfg = xmalloc(sizeof *new_xcfg); | |
662 | hmap_init(&new_xcfg->xbridges); | |
663 | hmap_init(&new_xcfg->xbundles); | |
664 | hmap_init(&new_xcfg->xports); | |
665 | ||
666 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
667 | if (!xcfg) { | |
668 | return; | |
669 | } | |
670 | ||
671 | HMAP_FOR_EACH (xbridge, hmap_node, &xcfg->xbridges) { | |
672 | xlate_xbridge_copy(xbridge); | |
673 | } | |
674 | } | |
675 | ||
676 | ||
677 | static void | |
678 | xlate_xcfg_free(struct xlate_cfg *xcfg) | |
679 | { | |
680 | struct xbridge *xbridge, *next_xbridge; | |
681 | ||
682 | if (!xcfg) { | |
683 | return; | |
684 | } | |
685 | ||
686 | HMAP_FOR_EACH_SAFE (xbridge, next_xbridge, hmap_node, &xcfg->xbridges) { | |
687 | xlate_xbridge_remove(xcfg, xbridge); | |
688 | } | |
689 | ||
690 | hmap_destroy(&xcfg->xbridges); | |
691 | hmap_destroy(&xcfg->xbundles); | |
692 | hmap_destroy(&xcfg->xports); | |
693 | free(xcfg); | |
694 | } | |
695 | ||
696 | void | |
697 | xlate_ofproto_set(struct ofproto_dpif *ofproto, const char *name, | |
698 | struct dpif *dpif, struct rule_dpif *miss_rule, | |
699 | struct rule_dpif *no_packet_in_rule, | |
700 | const struct mac_learning *ml, struct stp *stp, | |
6d95c4e8 | 701 | const struct mcast_snooping *ms, |
84f0f298 RW |
702 | const struct mbridge *mbridge, |
703 | const struct dpif_sflow *sflow, | |
704 | const struct dpif_ipfix *ipfix, | |
705 | const struct netflow *netflow, enum ofp_config_flags frag, | |
706 | bool forward_bpdu, bool has_in_band, | |
707 | bool enable_recirc, | |
708 | bool variable_length_userdata, | |
709 | size_t max_mpls_depth) | |
710 | { | |
711 | struct xbridge *xbridge; | |
712 | ||
713 | ovs_assert(new_xcfg); | |
714 | ||
715 | xbridge = xbridge_lookup(new_xcfg, ofproto); | |
716 | if (!xbridge) { | |
717 | xbridge = xzalloc(sizeof *xbridge); | |
718 | xbridge->ofproto = ofproto; | |
719 | ||
720 | xlate_xbridge_init(new_xcfg, xbridge); | |
721 | } | |
722 | ||
723 | free(xbridge->name); | |
724 | xbridge->name = xstrdup(name); | |
725 | ||
726 | xlate_xbridge_set(xbridge, dpif, miss_rule, no_packet_in_rule, ml, stp, | |
6d95c4e8 | 727 | ms, mbridge, sflow, ipfix, netflow, frag, forward_bpdu, |
84f0f298 RW |
728 | has_in_band, enable_recirc, variable_length_userdata, |
729 | max_mpls_depth); | |
730 | } | |
731 | ||
732 | static void | |
733 | xlate_xbridge_remove(struct xlate_cfg *xcfg, struct xbridge *xbridge) | |
46c88433 | 734 | { |
46c88433 EJ |
735 | struct xbundle *xbundle, *next_xbundle; |
736 | struct xport *xport, *next_xport; | |
737 | ||
738 | if (!xbridge) { | |
739 | return; | |
740 | } | |
741 | ||
742 | HMAP_FOR_EACH_SAFE (xport, next_xport, ofp_node, &xbridge->xports) { | |
84f0f298 | 743 | xlate_xport_remove(xcfg, xport); |
46c88433 EJ |
744 | } |
745 | ||
746 | LIST_FOR_EACH_SAFE (xbundle, next_xbundle, list_node, &xbridge->xbundles) { | |
84f0f298 | 747 | xlate_xbundle_remove(xcfg, xbundle); |
46c88433 EJ |
748 | } |
749 | ||
84f0f298 | 750 | hmap_remove(&xcfg->xbridges, &xbridge->hmap_node); |
795cc5c1 | 751 | mac_learning_unref(xbridge->ml); |
6d95c4e8 | 752 | mcast_snooping_unref(xbridge->ms); |
795cc5c1 EJ |
753 | mbridge_unref(xbridge->mbridge); |
754 | dpif_sflow_unref(xbridge->sflow); | |
755 | dpif_ipfix_unref(xbridge->ipfix); | |
756 | stp_unref(xbridge->stp); | |
757 | hmap_destroy(&xbridge->xports); | |
46c88433 EJ |
758 | free(xbridge->name); |
759 | free(xbridge); | |
760 | } | |
761 | ||
84f0f298 RW |
762 | void |
763 | xlate_remove_ofproto(struct ofproto_dpif *ofproto) | |
764 | { | |
765 | struct xbridge *xbridge; | |
766 | ||
767 | ovs_assert(new_xcfg); | |
768 | ||
769 | xbridge = xbridge_lookup(new_xcfg, ofproto); | |
770 | xlate_xbridge_remove(new_xcfg, xbridge); | |
771 | } | |
772 | ||
46c88433 EJ |
773 | void |
774 | xlate_bundle_set(struct ofproto_dpif *ofproto, struct ofbundle *ofbundle, | |
775 | const char *name, enum port_vlan_mode vlan_mode, int vlan, | |
776 | unsigned long *trunks, bool use_priority_tags, | |
777 | const struct bond *bond, const struct lacp *lacp, | |
778 | bool floodable) | |
779 | { | |
84f0f298 | 780 | struct xbundle *xbundle; |
46c88433 | 781 | |
84f0f298 RW |
782 | ovs_assert(new_xcfg); |
783 | ||
784 | xbundle = xbundle_lookup(new_xcfg, ofbundle); | |
46c88433 EJ |
785 | if (!xbundle) { |
786 | xbundle = xzalloc(sizeof *xbundle); | |
787 | xbundle->ofbundle = ofbundle; | |
84f0f298 | 788 | xbundle->xbridge = xbridge_lookup(new_xcfg, ofproto); |
46c88433 | 789 | |
84f0f298 | 790 | xlate_xbundle_init(new_xcfg, xbundle); |
46c88433 EJ |
791 | } |
792 | ||
46c88433 EJ |
793 | free(xbundle->name); |
794 | xbundle->name = xstrdup(name); | |
795 | ||
84f0f298 RW |
796 | xlate_xbundle_set(xbundle, vlan_mode, vlan, trunks, |
797 | use_priority_tags, bond, lacp, floodable); | |
46c88433 EJ |
798 | } |
799 | ||
84f0f298 RW |
800 | static void |
801 | xlate_xbundle_remove(struct xlate_cfg *xcfg, struct xbundle *xbundle) | |
46c88433 | 802 | { |
46c88433 EJ |
803 | struct xport *xport, *next; |
804 | ||
805 | if (!xbundle) { | |
806 | return; | |
807 | } | |
808 | ||
809 | LIST_FOR_EACH_SAFE (xport, next, bundle_node, &xbundle->xports) { | |
810 | list_remove(&xport->bundle_node); | |
811 | xport->xbundle = NULL; | |
812 | } | |
813 | ||
84f0f298 | 814 | hmap_remove(&xcfg->xbundles, &xbundle->hmap_node); |
46c88433 EJ |
815 | list_remove(&xbundle->list_node); |
816 | bond_unref(xbundle->bond); | |
817 | lacp_unref(xbundle->lacp); | |
818 | free(xbundle->name); | |
819 | free(xbundle); | |
820 | } | |
821 | ||
84f0f298 RW |
822 | void |
823 | xlate_bundle_remove(struct ofbundle *ofbundle) | |
824 | { | |
825 | struct xbundle *xbundle; | |
826 | ||
827 | ovs_assert(new_xcfg); | |
828 | ||
829 | xbundle = xbundle_lookup(new_xcfg, ofbundle); | |
830 | xlate_xbundle_remove(new_xcfg, xbundle); | |
831 | } | |
832 | ||
46c88433 EJ |
833 | void |
834 | xlate_ofport_set(struct ofproto_dpif *ofproto, struct ofbundle *ofbundle, | |
835 | struct ofport_dpif *ofport, ofp_port_t ofp_port, | |
836 | odp_port_t odp_port, const struct netdev *netdev, | |
837 | const struct cfm *cfm, const struct bfd *bfd, | |
9d189a50 | 838 | struct ofport_dpif *peer, int stp_port_no, |
55954f6e | 839 | const struct ofproto_port_queue *qdscp_list, size_t n_qdscp, |
dd8cd4b4 SH |
840 | enum ofputil_port_config config, |
841 | enum ofputil_port_state state, bool is_tunnel, | |
9d189a50 | 842 | bool may_enable) |
46c88433 | 843 | { |
55954f6e | 844 | size_t i; |
84f0f298 RW |
845 | struct xport *xport; |
846 | ||
847 | ovs_assert(new_xcfg); | |
46c88433 | 848 | |
84f0f298 | 849 | xport = xport_lookup(new_xcfg, ofport); |
46c88433 EJ |
850 | if (!xport) { |
851 | xport = xzalloc(sizeof *xport); | |
852 | xport->ofport = ofport; | |
84f0f298 | 853 | xport->xbridge = xbridge_lookup(new_xcfg, ofproto); |
46c88433 EJ |
854 | xport->ofp_port = ofp_port; |
855 | ||
84f0f298 | 856 | xlate_xport_init(new_xcfg, xport); |
46c88433 EJ |
857 | } |
858 | ||
859 | ovs_assert(xport->ofp_port == ofp_port); | |
860 | ||
84f0f298 RW |
861 | xlate_xport_set(xport, odp_port, netdev, cfm, bfd, stp_port_no, config, |
862 | state, is_tunnel, may_enable); | |
46c88433 EJ |
863 | |
864 | if (xport->peer) { | |
865 | xport->peer->peer = NULL; | |
866 | } | |
84f0f298 | 867 | xport->peer = xport_lookup(new_xcfg, peer); |
46c88433 EJ |
868 | if (xport->peer) { |
869 | xport->peer->peer = xport; | |
870 | } | |
871 | ||
872 | if (xport->xbundle) { | |
873 | list_remove(&xport->bundle_node); | |
874 | } | |
84f0f298 | 875 | xport->xbundle = xbundle_lookup(new_xcfg, ofbundle); |
46c88433 EJ |
876 | if (xport->xbundle) { |
877 | list_insert(&xport->xbundle->xports, &xport->bundle_node); | |
878 | } | |
55954f6e EJ |
879 | |
880 | clear_skb_priorities(xport); | |
881 | for (i = 0; i < n_qdscp; i++) { | |
882 | struct skb_priority_to_dscp *pdscp; | |
883 | uint32_t skb_priority; | |
884 | ||
89a8a7f0 EJ |
885 | if (dpif_queue_to_priority(xport->xbridge->dpif, qdscp_list[i].queue, |
886 | &skb_priority)) { | |
55954f6e EJ |
887 | continue; |
888 | } | |
889 | ||
890 | pdscp = xmalloc(sizeof *pdscp); | |
891 | pdscp->skb_priority = skb_priority; | |
892 | pdscp->dscp = (qdscp_list[i].dscp << 2) & IP_DSCP_MASK; | |
893 | hmap_insert(&xport->skb_priorities, &pdscp->hmap_node, | |
894 | hash_int(pdscp->skb_priority, 0)); | |
895 | } | |
46c88433 EJ |
896 | } |
897 | ||
84f0f298 RW |
898 | static void |
899 | xlate_xport_remove(struct xlate_cfg *xcfg, struct xport *xport) | |
46c88433 | 900 | { |
46c88433 EJ |
901 | if (!xport) { |
902 | return; | |
903 | } | |
904 | ||
905 | if (xport->peer) { | |
906 | xport->peer->peer = NULL; | |
907 | xport->peer = NULL; | |
908 | } | |
909 | ||
e621a12d EJ |
910 | if (xport->xbundle) { |
911 | list_remove(&xport->bundle_node); | |
912 | } | |
913 | ||
55954f6e EJ |
914 | clear_skb_priorities(xport); |
915 | hmap_destroy(&xport->skb_priorities); | |
916 | ||
84f0f298 | 917 | hmap_remove(&xcfg->xports, &xport->hmap_node); |
46c88433 EJ |
918 | hmap_remove(&xport->xbridge->xports, &xport->ofp_node); |
919 | ||
920 | netdev_close(xport->netdev); | |
921 | cfm_unref(xport->cfm); | |
922 | bfd_unref(xport->bfd); | |
923 | free(xport); | |
924 | } | |
925 | ||
84f0f298 RW |
926 | void |
927 | xlate_ofport_remove(struct ofport_dpif *ofport) | |
928 | { | |
929 | struct xport *xport; | |
930 | ||
931 | ovs_assert(new_xcfg); | |
932 | ||
933 | xport = xport_lookup(new_xcfg, ofport); | |
934 | xlate_xport_remove(new_xcfg, xport); | |
935 | } | |
936 | ||
8449c4d6 EJ |
937 | /* Given a datpath, packet, and flow metadata ('backer', 'packet', and 'key' |
938 | * respectively), populates 'flow' with the result of odp_flow_key_to_flow(). | |
836fbda7 SH |
939 | * Optionally populates 'ofproto' with the ofproto_dpif, 'odp_in_port' with |
940 | * the datapath in_port, that 'packet' ingressed, and 'ipfix', 'sflow', and | |
941 | * 'netflow' with the appropriate handles for those protocols if they're | |
942 | * enabled. Caller is responsible for unrefing them. | |
8449c4d6 EJ |
943 | * |
944 | * If 'ofproto' is nonnull, requires 'flow''s in_port to exist. Otherwise sets | |
945 | * 'flow''s in_port to OFPP_NONE. | |
946 | * | |
947 | * This function does post-processing on data returned from | |
948 | * odp_flow_key_to_flow() to help make VLAN splinters transparent to the rest | |
949 | * of the upcall processing logic. In particular, if the extracted in_port is | |
950 | * a VLAN splinter port, it replaces flow->in_port by the "real" port, sets | |
951 | * flow->vlan_tci correctly for the VLAN of the VLAN splinter port, and pushes | |
952 | * a VLAN header onto 'packet' (if it is nonnull). | |
953 | * | |
954 | * Similarly, this function also includes some logic to help with tunnels. It | |
955 | * may modify 'flow' as necessary to make the tunneling implementation | |
956 | * transparent to the upcall processing logic. | |
957 | * | |
958 | * Returns 0 if successful, ENODEV if the parsed flow has no associated ofport, | |
959 | * or some other positive errno if there are other problems. */ | |
960 | int | |
961 | xlate_receive(const struct dpif_backer *backer, struct ofpbuf *packet, | |
836fbda7 | 962 | const struct nlattr *key, size_t key_len, struct flow *flow, |
1dfdb9b3 EJ |
963 | struct ofproto_dpif **ofproto, struct dpif_ipfix **ipfix, |
964 | struct dpif_sflow **sflow, struct netflow **netflow, | |
965 | odp_port_t *odp_in_port) | |
8449c4d6 | 966 | { |
84f0f298 | 967 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
8449c4d6 | 968 | int error = ENODEV; |
84f0f298 | 969 | const struct xport *xport; |
8449c4d6 | 970 | |
836fbda7 | 971 | if (odp_flow_key_to_flow(key, key_len, flow) == ODP_FIT_ERROR) { |
8449c4d6 | 972 | error = EINVAL; |
84f0f298 | 973 | return error; |
8449c4d6 EJ |
974 | } |
975 | ||
976 | if (odp_in_port) { | |
977 | *odp_in_port = flow->in_port.odp_port; | |
978 | } | |
979 | ||
84f0f298 | 980 | xport = xport_lookup(xcfg, tnl_port_should_receive(flow) |
d6fc5f57 EJ |
981 | ? tnl_port_receive(flow) |
982 | : odp_port_to_ofport(backer, flow->in_port.odp_port)); | |
8449c4d6 EJ |
983 | |
984 | flow->in_port.ofp_port = xport ? xport->ofp_port : OFPP_NONE; | |
985 | if (!xport) { | |
84f0f298 | 986 | return error; |
8449c4d6 EJ |
987 | } |
988 | ||
989 | if (vsp_adjust_flow(xport->xbridge->ofproto, flow)) { | |
990 | if (packet) { | |
991 | /* Make the packet resemble the flow, so that it gets sent to | |
992 | * an OpenFlow controller properly, so that it looks correct | |
993 | * for sFlow, and so that flow_extract() will get the correct | |
da546e07 | 994 | * vlan_tci if it is called on 'packet'. */ |
1bf02876 | 995 | eth_push_vlan(packet, htons(ETH_TYPE_VLAN), flow->vlan_tci); |
8449c4d6 | 996 | } |
8449c4d6 EJ |
997 | } |
998 | error = 0; | |
999 | ||
1000 | if (ofproto) { | |
1001 | *ofproto = xport->xbridge->ofproto; | |
1002 | } | |
1003 | ||
1dfdb9b3 EJ |
1004 | if (ipfix) { |
1005 | *ipfix = dpif_ipfix_ref(xport->xbridge->ipfix); | |
1006 | } | |
1007 | ||
1008 | if (sflow) { | |
1009 | *sflow = dpif_sflow_ref(xport->xbridge->sflow); | |
1010 | } | |
1011 | ||
1012 | if (netflow) { | |
1013 | *netflow = netflow_ref(xport->xbridge->netflow); | |
1014 | } | |
8449c4d6 EJ |
1015 | return error; |
1016 | } | |
1017 | ||
46c88433 | 1018 | static struct xbridge * |
84f0f298 | 1019 | xbridge_lookup(struct xlate_cfg *xcfg, const struct ofproto_dpif *ofproto) |
46c88433 | 1020 | { |
84f0f298 | 1021 | struct hmap *xbridges; |
46c88433 EJ |
1022 | struct xbridge *xbridge; |
1023 | ||
84f0f298 | 1024 | if (!ofproto || !xcfg) { |
5e6af486 EJ |
1025 | return NULL; |
1026 | } | |
1027 | ||
84f0f298 RW |
1028 | xbridges = &xcfg->xbridges; |
1029 | ||
46c88433 | 1030 | HMAP_FOR_EACH_IN_BUCKET (xbridge, hmap_node, hash_pointer(ofproto, 0), |
84f0f298 | 1031 | xbridges) { |
46c88433 EJ |
1032 | if (xbridge->ofproto == ofproto) { |
1033 | return xbridge; | |
1034 | } | |
1035 | } | |
1036 | return NULL; | |
1037 | } | |
1038 | ||
1039 | static struct xbundle * | |
84f0f298 | 1040 | xbundle_lookup(struct xlate_cfg *xcfg, const struct ofbundle *ofbundle) |
46c88433 | 1041 | { |
84f0f298 | 1042 | struct hmap *xbundles; |
46c88433 EJ |
1043 | struct xbundle *xbundle; |
1044 | ||
84f0f298 | 1045 | if (!ofbundle || !xcfg) { |
5e6af486 EJ |
1046 | return NULL; |
1047 | } | |
1048 | ||
84f0f298 RW |
1049 | xbundles = &xcfg->xbundles; |
1050 | ||
46c88433 | 1051 | HMAP_FOR_EACH_IN_BUCKET (xbundle, hmap_node, hash_pointer(ofbundle, 0), |
84f0f298 | 1052 | xbundles) { |
46c88433 EJ |
1053 | if (xbundle->ofbundle == ofbundle) { |
1054 | return xbundle; | |
1055 | } | |
1056 | } | |
1057 | return NULL; | |
1058 | } | |
1059 | ||
1060 | static struct xport * | |
84f0f298 | 1061 | xport_lookup(struct xlate_cfg *xcfg, const struct ofport_dpif *ofport) |
46c88433 | 1062 | { |
84f0f298 | 1063 | struct hmap *xports; |
46c88433 EJ |
1064 | struct xport *xport; |
1065 | ||
84f0f298 | 1066 | if (!ofport || !xcfg) { |
5e6af486 EJ |
1067 | return NULL; |
1068 | } | |
1069 | ||
84f0f298 RW |
1070 | xports = &xcfg->xports; |
1071 | ||
46c88433 | 1072 | HMAP_FOR_EACH_IN_BUCKET (xport, hmap_node, hash_pointer(ofport, 0), |
84f0f298 | 1073 | xports) { |
46c88433 EJ |
1074 | if (xport->ofport == ofport) { |
1075 | return xport; | |
1076 | } | |
1077 | } | |
1078 | return NULL; | |
1079 | } | |
1080 | ||
40085e56 EJ |
1081 | static struct stp_port * |
1082 | xport_get_stp_port(const struct xport *xport) | |
1083 | { | |
92cf817b | 1084 | return xport->xbridge->stp && xport->stp_port_no != -1 |
40085e56 EJ |
1085 | ? stp_get_port(xport->xbridge->stp, xport->stp_port_no) |
1086 | : NULL; | |
1087 | } | |
9d189a50 | 1088 | |
0d1cee12 | 1089 | static bool |
9d189a50 EJ |
1090 | xport_stp_learn_state(const struct xport *xport) |
1091 | { | |
40085e56 EJ |
1092 | struct stp_port *sp = xport_get_stp_port(xport); |
1093 | return stp_learn_in_state(sp ? stp_port_get_state(sp) : STP_DISABLED); | |
9d189a50 EJ |
1094 | } |
1095 | ||
1096 | static bool | |
1097 | xport_stp_forward_state(const struct xport *xport) | |
1098 | { | |
40085e56 EJ |
1099 | struct stp_port *sp = xport_get_stp_port(xport); |
1100 | return stp_forward_in_state(sp ? stp_port_get_state(sp) : STP_DISABLED); | |
9d189a50 EJ |
1101 | } |
1102 | ||
0d1cee12 | 1103 | static bool |
bacdb85a | 1104 | xport_stp_should_forward_bpdu(const struct xport *xport) |
0d1cee12 K |
1105 | { |
1106 | struct stp_port *sp = xport_get_stp_port(xport); | |
bacdb85a | 1107 | return stp_should_forward_bpdu(sp ? stp_port_get_state(sp) : STP_DISABLED); |
0d1cee12 K |
1108 | } |
1109 | ||
9d189a50 EJ |
1110 | /* Returns true if STP should process 'flow'. Sets fields in 'wc' that |
1111 | * were used to make the determination.*/ | |
1112 | static bool | |
1113 | stp_should_process_flow(const struct flow *flow, struct flow_wildcards *wc) | |
1114 | { | |
bbbca389 | 1115 | /* is_stp() also checks dl_type, but dl_type is always set in 'wc'. */ |
9d189a50 | 1116 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); |
bbbca389 | 1117 | return is_stp(flow); |
9d189a50 EJ |
1118 | } |
1119 | ||
1120 | static void | |
1121 | stp_process_packet(const struct xport *xport, const struct ofpbuf *packet) | |
1122 | { | |
40085e56 | 1123 | struct stp_port *sp = xport_get_stp_port(xport); |
9d189a50 | 1124 | struct ofpbuf payload = *packet; |
1f317cb5 | 1125 | struct eth_header *eth = ofpbuf_data(&payload); |
9d189a50 EJ |
1126 | |
1127 | /* Sink packets on ports that have STP disabled when the bridge has | |
1128 | * STP enabled. */ | |
1129 | if (!sp || stp_port_get_state(sp) == STP_DISABLED) { | |
1130 | return; | |
1131 | } | |
1132 | ||
1133 | /* Trim off padding on payload. */ | |
1f317cb5 PS |
1134 | if (ofpbuf_size(&payload) > ntohs(eth->eth_type) + ETH_HEADER_LEN) { |
1135 | ofpbuf_set_size(&payload, ntohs(eth->eth_type) + ETH_HEADER_LEN); | |
9d189a50 EJ |
1136 | } |
1137 | ||
1138 | if (ofpbuf_try_pull(&payload, ETH_HEADER_LEN + LLC_HEADER_LEN)) { | |
1f317cb5 | 1139 | stp_received_bpdu(sp, ofpbuf_data(&payload), ofpbuf_size(&payload)); |
9d189a50 EJ |
1140 | } |
1141 | } | |
1142 | ||
46c88433 EJ |
1143 | static struct xport * |
1144 | get_ofp_port(const struct xbridge *xbridge, ofp_port_t ofp_port) | |
1145 | { | |
1146 | struct xport *xport; | |
1147 | ||
1148 | HMAP_FOR_EACH_IN_BUCKET (xport, ofp_node, hash_ofp_port(ofp_port), | |
1149 | &xbridge->xports) { | |
1150 | if (xport->ofp_port == ofp_port) { | |
1151 | return xport; | |
1152 | } | |
1153 | } | |
1154 | return NULL; | |
1155 | } | |
1156 | ||
1157 | static odp_port_t | |
1158 | ofp_port_to_odp_port(const struct xbridge *xbridge, ofp_port_t ofp_port) | |
1159 | { | |
1160 | const struct xport *xport = get_ofp_port(xbridge, ofp_port); | |
1161 | return xport ? xport->odp_port : ODPP_NONE; | |
1162 | } | |
1163 | ||
dd8cd4b4 SH |
1164 | static bool |
1165 | odp_port_is_alive(const struct xlate_ctx *ctx, ofp_port_t ofp_port) | |
1166 | { | |
1167 | struct xport *xport; | |
1168 | ||
1169 | xport = get_ofp_port(ctx->xbridge, ofp_port); | |
1170 | if (!xport || xport->config & OFPUTIL_PC_PORT_DOWN || | |
1171 | xport->state & OFPUTIL_PS_LINK_DOWN) { | |
1172 | return false; | |
1173 | } | |
1174 | ||
1175 | return true; | |
1176 | } | |
1177 | ||
1e684d7d | 1178 | static struct ofputil_bucket * |
dd8cd4b4 SH |
1179 | group_first_live_bucket(const struct xlate_ctx *, const struct group_dpif *, |
1180 | int depth); | |
1181 | ||
1182 | static bool | |
1183 | group_is_alive(const struct xlate_ctx *ctx, uint32_t group_id, int depth) | |
1184 | { | |
1185 | struct group_dpif *group; | |
dd8cd4b4 | 1186 | |
dc25893e AZ |
1187 | if (group_dpif_lookup(ctx->xbridge->ofproto, group_id, &group)) { |
1188 | struct ofputil_bucket *bucket; | |
dd8cd4b4 | 1189 | |
dc25893e AZ |
1190 | bucket = group_first_live_bucket(ctx, group, depth); |
1191 | group_dpif_unref(group); | |
1192 | return bucket == NULL; | |
1193 | } | |
dd8cd4b4 | 1194 | |
dc25893e | 1195 | return false; |
dd8cd4b4 SH |
1196 | } |
1197 | ||
1198 | #define MAX_LIVENESS_RECURSION 128 /* Arbitrary limit */ | |
1199 | ||
1200 | static bool | |
1201 | bucket_is_alive(const struct xlate_ctx *ctx, | |
1e684d7d | 1202 | struct ofputil_bucket *bucket, int depth) |
dd8cd4b4 SH |
1203 | { |
1204 | if (depth >= MAX_LIVENESS_RECURSION) { | |
1205 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); | |
1206 | ||
1207 | VLOG_WARN_RL(&rl, "bucket chaining exceeded %d links", | |
1208 | MAX_LIVENESS_RECURSION); | |
1209 | return false; | |
1210 | } | |
1211 | ||
fdb1999b AZ |
1212 | return (!ofputil_bucket_has_liveness(bucket) |
1213 | || (bucket->watch_port != OFPP_ANY | |
1214 | && odp_port_is_alive(ctx, bucket->watch_port)) | |
1215 | || (bucket->watch_group != OFPG_ANY | |
1216 | && group_is_alive(ctx, bucket->watch_group, depth + 1))); | |
dd8cd4b4 SH |
1217 | } |
1218 | ||
1e684d7d | 1219 | static struct ofputil_bucket * |
dd8cd4b4 SH |
1220 | group_first_live_bucket(const struct xlate_ctx *ctx, |
1221 | const struct group_dpif *group, int depth) | |
1222 | { | |
1223 | struct ofputil_bucket *bucket; | |
1224 | const struct list *buckets; | |
1225 | ||
1226 | group_dpif_get_buckets(group, &buckets); | |
1227 | LIST_FOR_EACH (bucket, list_node, buckets) { | |
1228 | if (bucket_is_alive(ctx, bucket, depth)) { | |
1229 | return bucket; | |
1230 | } | |
1231 | } | |
1232 | ||
1233 | return NULL; | |
1234 | } | |
1235 | ||
1e684d7d | 1236 | static struct ofputil_bucket * |
fe7e5749 SH |
1237 | group_best_live_bucket(const struct xlate_ctx *ctx, |
1238 | const struct group_dpif *group, | |
1239 | uint32_t basis) | |
1240 | { | |
1e684d7d | 1241 | struct ofputil_bucket *best_bucket = NULL; |
fe7e5749 SH |
1242 | uint32_t best_score = 0; |
1243 | int i = 0; | |
1244 | ||
1e684d7d | 1245 | struct ofputil_bucket *bucket; |
fe7e5749 SH |
1246 | const struct list *buckets; |
1247 | ||
1248 | group_dpif_get_buckets(group, &buckets); | |
1249 | LIST_FOR_EACH (bucket, list_node, buckets) { | |
1250 | if (bucket_is_alive(ctx, bucket, 0)) { | |
7cb279c2 | 1251 | uint32_t score = (hash_int(i, basis) & 0xffff) * bucket->weight; |
fe7e5749 SH |
1252 | if (score >= best_score) { |
1253 | best_bucket = bucket; | |
1254 | best_score = score; | |
1255 | } | |
1256 | } | |
1257 | i++; | |
1258 | } | |
1259 | ||
1260 | return best_bucket; | |
1261 | } | |
1262 | ||
9583bc14 | 1263 | static bool |
46c88433 | 1264 | xbundle_trunks_vlan(const struct xbundle *bundle, uint16_t vlan) |
9583bc14 EJ |
1265 | { |
1266 | return (bundle->vlan_mode != PORT_VLAN_ACCESS | |
1267 | && (!bundle->trunks || bitmap_is_set(bundle->trunks, vlan))); | |
1268 | } | |
1269 | ||
1270 | static bool | |
46c88433 EJ |
1271 | xbundle_includes_vlan(const struct xbundle *xbundle, uint16_t vlan) |
1272 | { | |
1273 | return vlan == xbundle->vlan || xbundle_trunks_vlan(xbundle, vlan); | |
1274 | } | |
1275 | ||
1276 | static mirror_mask_t | |
1277 | xbundle_mirror_out(const struct xbridge *xbridge, struct xbundle *xbundle) | |
1278 | { | |
1279 | return xbundle != &ofpp_none_bundle | |
1280 | ? mirror_bundle_out(xbridge->mbridge, xbundle->ofbundle) | |
1281 | : 0; | |
1282 | } | |
1283 | ||
1284 | static mirror_mask_t | |
1285 | xbundle_mirror_src(const struct xbridge *xbridge, struct xbundle *xbundle) | |
9583bc14 | 1286 | { |
46c88433 EJ |
1287 | return xbundle != &ofpp_none_bundle |
1288 | ? mirror_bundle_src(xbridge->mbridge, xbundle->ofbundle) | |
1289 | : 0; | |
9583bc14 EJ |
1290 | } |
1291 | ||
46c88433 EJ |
1292 | static mirror_mask_t |
1293 | xbundle_mirror_dst(const struct xbridge *xbridge, struct xbundle *xbundle) | |
9583bc14 | 1294 | { |
46c88433 EJ |
1295 | return xbundle != &ofpp_none_bundle |
1296 | ? mirror_bundle_dst(xbridge->mbridge, xbundle->ofbundle) | |
1297 | : 0; | |
1298 | } | |
1299 | ||
1300 | static struct xbundle * | |
1301 | lookup_input_bundle(const struct xbridge *xbridge, ofp_port_t in_port, | |
1302 | bool warn, struct xport **in_xportp) | |
1303 | { | |
1304 | struct xport *xport; | |
9583bc14 EJ |
1305 | |
1306 | /* Find the port and bundle for the received packet. */ | |
46c88433 EJ |
1307 | xport = get_ofp_port(xbridge, in_port); |
1308 | if (in_xportp) { | |
1309 | *in_xportp = xport; | |
9583bc14 | 1310 | } |
46c88433 EJ |
1311 | if (xport && xport->xbundle) { |
1312 | return xport->xbundle; | |
9583bc14 EJ |
1313 | } |
1314 | ||
6362203b YT |
1315 | /* Special-case OFPP_NONE (OF1.0) and OFPP_CONTROLLER (OF1.1+), |
1316 | * which a controller may use as the ingress port for traffic that | |
1317 | * it is sourcing. */ | |
1318 | if (in_port == OFPP_CONTROLLER || in_port == OFPP_NONE) { | |
9583bc14 EJ |
1319 | return &ofpp_none_bundle; |
1320 | } | |
1321 | ||
1322 | /* Odd. A few possible reasons here: | |
1323 | * | |
1324 | * - We deleted a port but there are still a few packets queued up | |
1325 | * from it. | |
1326 | * | |
1327 | * - Someone externally added a port (e.g. "ovs-dpctl add-if") that | |
1328 | * we don't know about. | |
1329 | * | |
1330 | * - The ofproto client didn't configure the port as part of a bundle. | |
1331 | * This is particularly likely to happen if a packet was received on the | |
1332 | * port after it was created, but before the client had a chance to | |
1333 | * configure its bundle. | |
1334 | */ | |
1335 | if (warn) { | |
1336 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
1337 | ||
1338 | VLOG_WARN_RL(&rl, "bridge %s: received packet on unknown " | |
46c88433 | 1339 | "port %"PRIu16, xbridge->name, in_port); |
9583bc14 EJ |
1340 | } |
1341 | return NULL; | |
1342 | } | |
1343 | ||
1344 | static void | |
1345 | add_mirror_actions(struct xlate_ctx *ctx, const struct flow *orig_flow) | |
1346 | { | |
46c88433 | 1347 | const struct xbridge *xbridge = ctx->xbridge; |
9583bc14 | 1348 | mirror_mask_t mirrors; |
46c88433 | 1349 | struct xbundle *in_xbundle; |
9583bc14 EJ |
1350 | uint16_t vlan; |
1351 | uint16_t vid; | |
cdf5d3a5 EJ |
1352 | |
1353 | mirrors = ctx->xout->mirrors; | |
1354 | ctx->xout->mirrors = 0; | |
9583bc14 | 1355 | |
46c88433 EJ |
1356 | in_xbundle = lookup_input_bundle(xbridge, orig_flow->in_port.ofp_port, |
1357 | ctx->xin->packet != NULL, NULL); | |
1358 | if (!in_xbundle) { | |
9583bc14 EJ |
1359 | return; |
1360 | } | |
46c88433 | 1361 | mirrors |= xbundle_mirror_src(xbridge, in_xbundle); |
9583bc14 EJ |
1362 | |
1363 | /* Drop frames on bundles reserved for mirroring. */ | |
46c88433 | 1364 | if (xbundle_mirror_out(xbridge, in_xbundle)) { |
9583bc14 EJ |
1365 | if (ctx->xin->packet != NULL) { |
1366 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
1367 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet received on port " | |
1368 | "%s, which is reserved exclusively for mirroring", | |
46c88433 | 1369 | ctx->xbridge->name, in_xbundle->name); |
9583bc14 | 1370 | } |
aaa0fbae | 1371 | ofpbuf_clear(&ctx->xout->odp_actions); |
9583bc14 EJ |
1372 | return; |
1373 | } | |
1374 | ||
1375 | /* Check VLAN. */ | |
1376 | vid = vlan_tci_to_vid(orig_flow->vlan_tci); | |
46c88433 | 1377 | if (!input_vid_is_valid(vid, in_xbundle, ctx->xin->packet != NULL)) { |
9583bc14 EJ |
1378 | return; |
1379 | } | |
46c88433 | 1380 | vlan = input_vid_to_vlan(in_xbundle, vid); |
9583bc14 | 1381 | |
9583bc14 EJ |
1382 | if (!mirrors) { |
1383 | return; | |
1384 | } | |
1385 | ||
1386 | /* Restore the original packet before adding the mirror actions. */ | |
1387 | ctx->xin->flow = *orig_flow; | |
1388 | ||
1389 | while (mirrors) { | |
ec7ceaed EJ |
1390 | mirror_mask_t dup_mirrors; |
1391 | struct ofbundle *out; | |
1392 | unsigned long *vlans; | |
1393 | bool vlan_mirrored; | |
1394 | bool has_mirror; | |
1395 | int out_vlan; | |
1396 | ||
4b6ab2b0 | 1397 | has_mirror = mirror_get(xbridge->mbridge, raw_ctz(mirrors), |
ec7ceaed EJ |
1398 | &vlans, &dup_mirrors, &out, &out_vlan); |
1399 | ovs_assert(has_mirror); | |
1400 | ||
1401 | if (vlans) { | |
9583bc14 EJ |
1402 | ctx->xout->wc.masks.vlan_tci |= htons(VLAN_CFI | VLAN_VID_MASK); |
1403 | } | |
ec7ceaed EJ |
1404 | vlan_mirrored = !vlans || bitmap_is_set(vlans, vlan); |
1405 | free(vlans); | |
9583bc14 | 1406 | |
ec7ceaed | 1407 | if (!vlan_mirrored) { |
9583bc14 EJ |
1408 | mirrors = zero_rightmost_1bit(mirrors); |
1409 | continue; | |
1410 | } | |
1411 | ||
ec7ceaed EJ |
1412 | mirrors &= ~dup_mirrors; |
1413 | ctx->xout->mirrors |= dup_mirrors; | |
1414 | if (out) { | |
84f0f298 RW |
1415 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
1416 | struct xbundle *out_xbundle = xbundle_lookup(xcfg, out); | |
46c88433 EJ |
1417 | if (out_xbundle) { |
1418 | output_normal(ctx, out_xbundle, vlan); | |
1419 | } | |
ec7ceaed | 1420 | } else if (vlan != out_vlan |
9583bc14 | 1421 | && !eth_addr_is_reserved(orig_flow->dl_dst)) { |
46c88433 | 1422 | struct xbundle *xbundle; |
9583bc14 | 1423 | |
46c88433 EJ |
1424 | LIST_FOR_EACH (xbundle, list_node, &xbridge->xbundles) { |
1425 | if (xbundle_includes_vlan(xbundle, out_vlan) | |
1426 | && !xbundle_mirror_out(xbridge, xbundle)) { | |
1427 | output_normal(ctx, xbundle, out_vlan); | |
9583bc14 EJ |
1428 | } |
1429 | } | |
1430 | } | |
1431 | } | |
1432 | } | |
1433 | ||
1434 | /* Given 'vid', the VID obtained from the 802.1Q header that was received as | |
46c88433 | 1435 | * part of a packet (specify 0 if there was no 802.1Q header), and 'in_xbundle', |
9583bc14 EJ |
1436 | * the bundle on which the packet was received, returns the VLAN to which the |
1437 | * packet belongs. | |
1438 | * | |
1439 | * Both 'vid' and the return value are in the range 0...4095. */ | |
1440 | static uint16_t | |
46c88433 | 1441 | input_vid_to_vlan(const struct xbundle *in_xbundle, uint16_t vid) |
9583bc14 | 1442 | { |
46c88433 | 1443 | switch (in_xbundle->vlan_mode) { |
9583bc14 | 1444 | case PORT_VLAN_ACCESS: |
46c88433 | 1445 | return in_xbundle->vlan; |
9583bc14 EJ |
1446 | break; |
1447 | ||
1448 | case PORT_VLAN_TRUNK: | |
1449 | return vid; | |
1450 | ||
1451 | case PORT_VLAN_NATIVE_UNTAGGED: | |
1452 | case PORT_VLAN_NATIVE_TAGGED: | |
46c88433 | 1453 | return vid ? vid : in_xbundle->vlan; |
9583bc14 EJ |
1454 | |
1455 | default: | |
428b2edd | 1456 | OVS_NOT_REACHED(); |
9583bc14 EJ |
1457 | } |
1458 | } | |
1459 | ||
46c88433 | 1460 | /* Checks whether a packet with the given 'vid' may ingress on 'in_xbundle'. |
9583bc14 EJ |
1461 | * If so, returns true. Otherwise, returns false and, if 'warn' is true, logs |
1462 | * a warning. | |
1463 | * | |
1464 | * 'vid' should be the VID obtained from the 802.1Q header that was received as | |
1465 | * part of a packet (specify 0 if there was no 802.1Q header), in the range | |
1466 | * 0...4095. */ | |
1467 | static bool | |
46c88433 | 1468 | input_vid_is_valid(uint16_t vid, struct xbundle *in_xbundle, bool warn) |
9583bc14 EJ |
1469 | { |
1470 | /* Allow any VID on the OFPP_NONE port. */ | |
46c88433 | 1471 | if (in_xbundle == &ofpp_none_bundle) { |
9583bc14 EJ |
1472 | return true; |
1473 | } | |
1474 | ||
46c88433 | 1475 | switch (in_xbundle->vlan_mode) { |
9583bc14 EJ |
1476 | case PORT_VLAN_ACCESS: |
1477 | if (vid) { | |
1478 | if (warn) { | |
1479 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
46c88433 | 1480 | VLOG_WARN_RL(&rl, "dropping VLAN %"PRIu16" tagged " |
9583bc14 | 1481 | "packet received on port %s configured as VLAN " |
46c88433 EJ |
1482 | "%"PRIu16" access port", vid, in_xbundle->name, |
1483 | in_xbundle->vlan); | |
9583bc14 EJ |
1484 | } |
1485 | return false; | |
1486 | } | |
1487 | return true; | |
1488 | ||
1489 | case PORT_VLAN_NATIVE_UNTAGGED: | |
1490 | case PORT_VLAN_NATIVE_TAGGED: | |
1491 | if (!vid) { | |
1492 | /* Port must always carry its native VLAN. */ | |
1493 | return true; | |
1494 | } | |
1495 | /* Fall through. */ | |
1496 | case PORT_VLAN_TRUNK: | |
46c88433 | 1497 | if (!xbundle_includes_vlan(in_xbundle, vid)) { |
9583bc14 EJ |
1498 | if (warn) { |
1499 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
46c88433 | 1500 | VLOG_WARN_RL(&rl, "dropping VLAN %"PRIu16" packet " |
9583bc14 | 1501 | "received on port %s not configured for trunking " |
46c88433 | 1502 | "VLAN %"PRIu16, vid, in_xbundle->name, vid); |
9583bc14 EJ |
1503 | } |
1504 | return false; | |
1505 | } | |
1506 | return true; | |
1507 | ||
1508 | default: | |
428b2edd | 1509 | OVS_NOT_REACHED(); |
9583bc14 EJ |
1510 | } |
1511 | ||
1512 | } | |
1513 | ||
1514 | /* Given 'vlan', the VLAN that a packet belongs to, and | |
46c88433 | 1515 | * 'out_xbundle', a bundle on which the packet is to be output, returns the VID |
9583bc14 EJ |
1516 | * that should be included in the 802.1Q header. (If the return value is 0, |
1517 | * then the 802.1Q header should only be included in the packet if there is a | |
1518 | * nonzero PCP.) | |
1519 | * | |
1520 | * Both 'vlan' and the return value are in the range 0...4095. */ | |
1521 | static uint16_t | |
46c88433 | 1522 | output_vlan_to_vid(const struct xbundle *out_xbundle, uint16_t vlan) |
9583bc14 | 1523 | { |
46c88433 | 1524 | switch (out_xbundle->vlan_mode) { |
9583bc14 EJ |
1525 | case PORT_VLAN_ACCESS: |
1526 | return 0; | |
1527 | ||
1528 | case PORT_VLAN_TRUNK: | |
1529 | case PORT_VLAN_NATIVE_TAGGED: | |
1530 | return vlan; | |
1531 | ||
1532 | case PORT_VLAN_NATIVE_UNTAGGED: | |
46c88433 | 1533 | return vlan == out_xbundle->vlan ? 0 : vlan; |
9583bc14 EJ |
1534 | |
1535 | default: | |
428b2edd | 1536 | OVS_NOT_REACHED(); |
9583bc14 EJ |
1537 | } |
1538 | } | |
1539 | ||
1540 | static void | |
46c88433 | 1541 | output_normal(struct xlate_ctx *ctx, const struct xbundle *out_xbundle, |
9583bc14 EJ |
1542 | uint16_t vlan) |
1543 | { | |
33bf9176 | 1544 | ovs_be16 *flow_tci = &ctx->xin->flow.vlan_tci; |
9583bc14 EJ |
1545 | uint16_t vid; |
1546 | ovs_be16 tci, old_tci; | |
46c88433 | 1547 | struct xport *xport; |
9583bc14 | 1548 | |
46c88433 EJ |
1549 | vid = output_vlan_to_vid(out_xbundle, vlan); |
1550 | if (list_is_empty(&out_xbundle->xports)) { | |
1551 | /* Partially configured bundle with no slaves. Drop the packet. */ | |
1552 | return; | |
1553 | } else if (!out_xbundle->bond) { | |
92c08f09 | 1554 | ctx->use_recirc = false; |
46c88433 EJ |
1555 | xport = CONTAINER_OF(list_front(&out_xbundle->xports), struct xport, |
1556 | bundle_node); | |
9583bc14 | 1557 | } else { |
84f0f298 | 1558 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
54ecb5a2 | 1559 | struct flow_wildcards *wc = &ctx->xout->wc; |
84f0f298 RW |
1560 | struct xlate_recirc *xr = &ctx->recirc; |
1561 | struct ofport_dpif *ofport; | |
adcf00ba AZ |
1562 | |
1563 | if (ctx->xbridge->enable_recirc) { | |
92c08f09 | 1564 | ctx->use_recirc = bond_may_recirc( |
62ac1f20 | 1565 | out_xbundle->bond, &xr->recirc_id, &xr->hash_basis); |
adcf00ba | 1566 | |
92c08f09 | 1567 | if (ctx->use_recirc) { |
adcf00ba | 1568 | /* Only TCP mode uses recirculation. */ |
347bf289 | 1569 | xr->hash_alg = OVS_HASH_ALG_L4; |
adcf00ba | 1570 | bond_update_post_recirc_rules(out_xbundle->bond, false); |
54ecb5a2 AZ |
1571 | |
1572 | /* Recirculation does not require unmasking hash fields. */ | |
1573 | wc = NULL; | |
adcf00ba AZ |
1574 | } |
1575 | } | |
46c88433 | 1576 | |
54ecb5a2 AZ |
1577 | ofport = bond_choose_output_slave(out_xbundle->bond, |
1578 | &ctx->xin->flow, wc, vid); | |
84f0f298 | 1579 | xport = xport_lookup(xcfg, ofport); |
46c88433 EJ |
1580 | |
1581 | if (!xport) { | |
9583bc14 EJ |
1582 | /* No slaves enabled, so drop packet. */ |
1583 | return; | |
1584 | } | |
d6fc5f57 | 1585 | |
b256dc52 JS |
1586 | /* If ctx->xout->use_recirc is set, the main thread will handle stats |
1587 | * accounting for this bond. */ | |
92c08f09 | 1588 | if (!ctx->use_recirc) { |
b256dc52 JS |
1589 | if (ctx->xin->resubmit_stats) { |
1590 | bond_account(out_xbundle->bond, &ctx->xin->flow, vid, | |
1591 | ctx->xin->resubmit_stats->n_bytes); | |
1592 | } | |
1593 | if (ctx->xin->xcache) { | |
1594 | struct xc_entry *entry; | |
1595 | struct flow *flow; | |
1596 | ||
1597 | flow = &ctx->xin->flow; | |
1598 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_BOND); | |
1599 | entry->u.bond.bond = bond_ref(out_xbundle->bond); | |
1600 | entry->u.bond.flow = xmemdup(flow, sizeof *flow); | |
1601 | entry->u.bond.vid = vid; | |
1602 | } | |
d6fc5f57 | 1603 | } |
9583bc14 EJ |
1604 | } |
1605 | ||
33bf9176 | 1606 | old_tci = *flow_tci; |
9583bc14 | 1607 | tci = htons(vid); |
46c88433 | 1608 | if (tci || out_xbundle->use_priority_tags) { |
33bf9176 | 1609 | tci |= *flow_tci & htons(VLAN_PCP_MASK); |
9583bc14 EJ |
1610 | if (tci) { |
1611 | tci |= htons(VLAN_CFI); | |
1612 | } | |
1613 | } | |
33bf9176 | 1614 | *flow_tci = tci; |
9583bc14 | 1615 | |
46c88433 | 1616 | compose_output_action(ctx, xport->ofp_port); |
33bf9176 | 1617 | *flow_tci = old_tci; |
9583bc14 EJ |
1618 | } |
1619 | ||
1620 | /* A VM broadcasts a gratuitous ARP to indicate that it has resumed after | |
1621 | * migration. Older Citrix-patched Linux DomU used gratuitous ARP replies to | |
1622 | * indicate this; newer upstream kernels use gratuitous ARP requests. */ | |
1623 | static bool | |
1624 | is_gratuitous_arp(const struct flow *flow, struct flow_wildcards *wc) | |
1625 | { | |
1626 | if (flow->dl_type != htons(ETH_TYPE_ARP)) { | |
1627 | return false; | |
1628 | } | |
1629 | ||
1630 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); | |
1631 | if (!eth_addr_is_broadcast(flow->dl_dst)) { | |
1632 | return false; | |
1633 | } | |
1634 | ||
1635 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); | |
1636 | if (flow->nw_proto == ARP_OP_REPLY) { | |
1637 | return true; | |
1638 | } else if (flow->nw_proto == ARP_OP_REQUEST) { | |
1639 | memset(&wc->masks.nw_src, 0xff, sizeof wc->masks.nw_src); | |
1640 | memset(&wc->masks.nw_dst, 0xff, sizeof wc->masks.nw_dst); | |
1641 | ||
1642 | return flow->nw_src == flow->nw_dst; | |
1643 | } else { | |
1644 | return false; | |
1645 | } | |
1646 | } | |
1647 | ||
ff69c24a FL |
1648 | /* Determines whether packets in 'flow' within 'xbridge' should be forwarded or |
1649 | * dropped. Returns true if they may be forwarded, false if they should be | |
1650 | * dropped. | |
1651 | * | |
1652 | * 'in_port' must be the xport that corresponds to flow->in_port. | |
1653 | * 'in_port' must be part of a bundle (e.g. in_port->bundle must be nonnull). | |
1654 | * | |
1655 | * 'vlan' must be the VLAN that corresponds to flow->vlan_tci on 'in_port', as | |
1656 | * returned by input_vid_to_vlan(). It must be a valid VLAN for 'in_port', as | |
1657 | * checked by input_vid_is_valid(). | |
1658 | * | |
1659 | * May also add tags to '*tags', although the current implementation only does | |
1660 | * so in one special case. | |
1661 | */ | |
1662 | static bool | |
1663 | is_admissible(struct xlate_ctx *ctx, struct xport *in_port, | |
1664 | uint16_t vlan) | |
1665 | { | |
1666 | struct xbundle *in_xbundle = in_port->xbundle; | |
1667 | const struct xbridge *xbridge = ctx->xbridge; | |
1668 | struct flow *flow = &ctx->xin->flow; | |
1669 | ||
1670 | /* Drop frames for reserved multicast addresses | |
1671 | * only if forward_bpdu option is absent. */ | |
1672 | if (!xbridge->forward_bpdu && eth_addr_is_reserved(flow->dl_dst)) { | |
1673 | xlate_report(ctx, "packet has reserved destination MAC, dropping"); | |
1674 | return false; | |
1675 | } | |
1676 | ||
1677 | if (in_xbundle->bond) { | |
1678 | struct mac_entry *mac; | |
1679 | ||
1680 | switch (bond_check_admissibility(in_xbundle->bond, in_port->ofport, | |
1681 | flow->dl_dst)) { | |
1682 | case BV_ACCEPT: | |
1683 | break; | |
1684 | ||
1685 | case BV_DROP: | |
1686 | xlate_report(ctx, "bonding refused admissibility, dropping"); | |
1687 | return false; | |
1688 | ||
1689 | case BV_DROP_IF_MOVED: | |
1690 | ovs_rwlock_rdlock(&xbridge->ml->rwlock); | |
1691 | mac = mac_learning_lookup(xbridge->ml, flow->dl_src, vlan); | |
1692 | if (mac && mac->port.p != in_xbundle->ofbundle && | |
1693 | (!is_gratuitous_arp(flow, &ctx->xout->wc) | |
1694 | || mac_entry_is_grat_arp_locked(mac))) { | |
1695 | ovs_rwlock_unlock(&xbridge->ml->rwlock); | |
1696 | xlate_report(ctx, "SLB bond thinks this packet looped back, " | |
1697 | "dropping"); | |
1698 | return false; | |
1699 | } | |
1700 | ovs_rwlock_unlock(&xbridge->ml->rwlock); | |
1701 | break; | |
1702 | } | |
1703 | } | |
1704 | ||
1705 | return true; | |
1706 | } | |
1707 | ||
ee047520 BP |
1708 | /* Checks whether a MAC learning update is necessary for MAC learning table |
1709 | * 'ml' given that a packet matching 'flow' was received on 'in_xbundle' in | |
1710 | * 'vlan'. | |
1711 | * | |
1712 | * Most packets processed through the MAC learning table do not actually | |
1713 | * change it in any way. This function requires only a read lock on the MAC | |
1714 | * learning table, so it is much cheaper in this common case. | |
1715 | * | |
1716 | * Keep the code here synchronized with that in update_learning_table__() | |
1717 | * below. */ | |
1718 | static bool | |
1719 | is_mac_learning_update_needed(const struct mac_learning *ml, | |
1720 | const struct flow *flow, | |
1721 | struct flow_wildcards *wc, | |
1722 | int vlan, struct xbundle *in_xbundle) | |
d6fc5f57 | 1723 | OVS_REQ_RDLOCK(ml->rwlock) |
9583bc14 EJ |
1724 | { |
1725 | struct mac_entry *mac; | |
1726 | ||
ee047520 BP |
1727 | if (!mac_learning_may_learn(ml, flow->dl_src, vlan)) { |
1728 | return false; | |
1729 | } | |
1730 | ||
1731 | mac = mac_learning_lookup(ml, flow->dl_src, vlan); | |
1732 | if (!mac || mac_entry_age(ml, mac)) { | |
1733 | return true; | |
9583bc14 EJ |
1734 | } |
1735 | ||
ee047520 BP |
1736 | if (is_gratuitous_arp(flow, wc)) { |
1737 | /* We don't want to learn from gratuitous ARP packets that are | |
1738 | * reflected back over bond slaves so we lock the learning table. */ | |
1739 | if (!in_xbundle->bond) { | |
1740 | return true; | |
1741 | } else if (mac_entry_is_grat_arp_locked(mac)) { | |
1742 | return false; | |
1743 | } | |
1744 | } | |
1745 | ||
1746 | return mac->port.p != in_xbundle->ofbundle; | |
1747 | } | |
1748 | ||
1749 | ||
1750 | /* Updates MAC learning table 'ml' given that a packet matching 'flow' was | |
1751 | * received on 'in_xbundle' in 'vlan'. | |
1752 | * | |
1753 | * This code repeats all the checks in is_mac_learning_update_needed() because | |
1754 | * the lock was released between there and here and thus the MAC learning state | |
1755 | * could have changed. | |
1756 | * | |
1757 | * Keep the code here synchronized with that in is_mac_learning_update_needed() | |
1758 | * above. */ | |
1759 | static void | |
1760 | update_learning_table__(const struct xbridge *xbridge, | |
1761 | const struct flow *flow, struct flow_wildcards *wc, | |
1762 | int vlan, struct xbundle *in_xbundle) | |
d6fc5f57 | 1763 | OVS_REQ_WRLOCK(xbridge->ml->rwlock) |
ee047520 BP |
1764 | { |
1765 | struct mac_entry *mac; | |
1766 | ||
46c88433 | 1767 | if (!mac_learning_may_learn(xbridge->ml, flow->dl_src, vlan)) { |
ee047520 | 1768 | return; |
9583bc14 EJ |
1769 | } |
1770 | ||
46c88433 | 1771 | mac = mac_learning_insert(xbridge->ml, flow->dl_src, vlan); |
9583bc14 EJ |
1772 | if (is_gratuitous_arp(flow, wc)) { |
1773 | /* We don't want to learn from gratuitous ARP packets that are | |
1774 | * reflected back over bond slaves so we lock the learning table. */ | |
46c88433 | 1775 | if (!in_xbundle->bond) { |
9583bc14 EJ |
1776 | mac_entry_set_grat_arp_lock(mac); |
1777 | } else if (mac_entry_is_grat_arp_locked(mac)) { | |
ee047520 | 1778 | return; |
9583bc14 EJ |
1779 | } |
1780 | } | |
1781 | ||
30618594 | 1782 | if (mac->port.p != in_xbundle->ofbundle) { |
9583bc14 EJ |
1783 | /* The log messages here could actually be useful in debugging, |
1784 | * so keep the rate limit relatively high. */ | |
1785 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(30, 300); | |
ee047520 | 1786 | |
9583bc14 EJ |
1787 | VLOG_DBG_RL(&rl, "bridge %s: learned that "ETH_ADDR_FMT" is " |
1788 | "on port %s in VLAN %d", | |
46c88433 EJ |
1789 | xbridge->name, ETH_ADDR_ARGS(flow->dl_src), |
1790 | in_xbundle->name, vlan); | |
9583bc14 | 1791 | |
46c88433 | 1792 | mac->port.p = in_xbundle->ofbundle; |
30618594 | 1793 | mac_learning_changed(xbridge->ml); |
9583bc14 | 1794 | } |
ee047520 BP |
1795 | } |
1796 | ||
1797 | static void | |
1798 | update_learning_table(const struct xbridge *xbridge, | |
1799 | const struct flow *flow, struct flow_wildcards *wc, | |
1800 | int vlan, struct xbundle *in_xbundle) | |
1801 | { | |
1802 | bool need_update; | |
1803 | ||
1804 | /* Don't learn the OFPP_NONE port. */ | |
1805 | if (in_xbundle == &ofpp_none_bundle) { | |
1806 | return; | |
1807 | } | |
1808 | ||
1809 | /* First try the common case: no change to MAC learning table. */ | |
1810 | ovs_rwlock_rdlock(&xbridge->ml->rwlock); | |
1811 | need_update = is_mac_learning_update_needed(xbridge->ml, flow, wc, vlan, | |
1812 | in_xbundle); | |
509c0149 | 1813 | ovs_rwlock_unlock(&xbridge->ml->rwlock); |
ee047520 BP |
1814 | |
1815 | if (need_update) { | |
1816 | /* Slow path: MAC learning table might need an update. */ | |
1817 | ovs_rwlock_wrlock(&xbridge->ml->rwlock); | |
1818 | update_learning_table__(xbridge, flow, wc, vlan, in_xbundle); | |
1819 | ovs_rwlock_unlock(&xbridge->ml->rwlock); | |
1820 | } | |
9583bc14 EJ |
1821 | } |
1822 | ||
86e2dcdd FL |
1823 | /* Updates multicast snooping table 'ms' given that a packet matching 'flow' |
1824 | * was received on 'in_xbundle' in 'vlan' and is either Report or Query. */ | |
1825 | static void | |
1826 | update_mcast_snooping_table__(const struct xbridge *xbridge, | |
1827 | const struct flow *flow, | |
1828 | struct mcast_snooping *ms, | |
1829 | ovs_be32 ip4, int vlan, | |
1830 | struct xbundle *in_xbundle) | |
1831 | OVS_REQ_WRLOCK(ms->rwlock) | |
1832 | { | |
1833 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(60, 30); | |
1834 | ||
1835 | switch (ntohs(flow->tp_src)) { | |
1836 | case IGMP_HOST_MEMBERSHIP_REPORT: | |
1837 | case IGMPV2_HOST_MEMBERSHIP_REPORT: | |
1838 | if (mcast_snooping_add_group(ms, ip4, vlan, in_xbundle->ofbundle)) { | |
1839 | VLOG_DBG_RL(&rl, "bridge %s: multicast snooping learned that " | |
1840 | IP_FMT" is on port %s in VLAN %d", | |
1841 | xbridge->name, IP_ARGS(ip4), in_xbundle->name, vlan); | |
1842 | } | |
1843 | break; | |
1844 | case IGMP_HOST_LEAVE_MESSAGE: | |
1845 | if (mcast_snooping_leave_group(ms, ip4, vlan, in_xbundle->ofbundle)) { | |
1846 | VLOG_DBG_RL(&rl, "bridge %s: multicast snooping leaving " | |
1847 | IP_FMT" is on port %s in VLAN %d", | |
1848 | xbridge->name, IP_ARGS(ip4), in_xbundle->name, vlan); | |
1849 | } | |
1850 | break; | |
1851 | case IGMP_HOST_MEMBERSHIP_QUERY: | |
1852 | if (flow->nw_src && mcast_snooping_add_mrouter(ms, vlan, | |
1853 | in_xbundle->ofbundle)) { | |
1854 | VLOG_DBG_RL(&rl, "bridge %s: multicast snooping query from " | |
1855 | IP_FMT" is on port %s in VLAN %d", | |
1856 | xbridge->name, IP_ARGS(flow->nw_src), | |
1857 | in_xbundle->name, vlan); | |
1858 | } | |
1859 | break; | |
1860 | } | |
1861 | } | |
1862 | ||
1863 | /* Updates multicast snooping table 'ms' given that a packet matching 'flow' | |
1864 | * was received on 'in_xbundle' in 'vlan'. */ | |
1865 | static void | |
1866 | update_mcast_snooping_table(const struct xbridge *xbridge, | |
1867 | const struct flow *flow, int vlan, | |
1868 | struct xbundle *in_xbundle) | |
1869 | { | |
1870 | struct mcast_snooping *ms = xbridge->ms; | |
1871 | struct xlate_cfg *xcfg; | |
1872 | struct xbundle *mcast_xbundle; | |
1873 | struct mcast_fport_bundle *fport; | |
1874 | ||
1875 | /* Don't learn the OFPP_NONE port. */ | |
1876 | if (in_xbundle == &ofpp_none_bundle) { | |
1877 | return; | |
1878 | } | |
1879 | ||
1880 | /* Don't learn from flood ports */ | |
1881 | mcast_xbundle = NULL; | |
1882 | ovs_rwlock_wrlock(&ms->rwlock); | |
1883 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
1884 | LIST_FOR_EACH(fport, fport_node, &ms->fport_list) { | |
1885 | mcast_xbundle = xbundle_lookup(xcfg, fport->port); | |
1886 | if (mcast_xbundle == in_xbundle) { | |
1887 | break; | |
1888 | } | |
1889 | } | |
1890 | ||
1891 | if (!mcast_xbundle || mcast_xbundle != in_xbundle) { | |
1892 | update_mcast_snooping_table__(xbridge, flow, ms, flow->igmp_group_ip4, | |
1893 | vlan, in_xbundle); | |
1894 | } | |
1895 | ovs_rwlock_unlock(&ms->rwlock); | |
1896 | } | |
1897 | ||
1898 | /* send the packet to ports having the multicast group learned */ | |
1899 | static void | |
1900 | xlate_normal_mcast_send_group(struct xlate_ctx *ctx, | |
1901 | struct mcast_snooping *ms OVS_UNUSED, | |
1902 | struct mcast_group *grp, | |
1903 | struct xbundle *in_xbundle, uint16_t vlan) | |
1904 | OVS_REQ_RDLOCK(ms->rwlock) | |
1905 | { | |
1906 | struct xlate_cfg *xcfg; | |
1907 | struct mcast_group_bundle *b; | |
1908 | struct xbundle *mcast_xbundle; | |
1909 | ||
1910 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
1911 | LIST_FOR_EACH(b, bundle_node, &grp->bundle_lru) { | |
1912 | mcast_xbundle = xbundle_lookup(xcfg, b->port); | |
1913 | if (mcast_xbundle && mcast_xbundle != in_xbundle) { | |
1914 | xlate_report(ctx, "forwarding to mcast group port"); | |
1915 | output_normal(ctx, mcast_xbundle, vlan); | |
1916 | } else if (!mcast_xbundle) { | |
1917 | xlate_report(ctx, "mcast group port is unknown, dropping"); | |
1918 | } else { | |
1919 | xlate_report(ctx, "mcast group port is input port, dropping"); | |
1920 | } | |
1921 | } | |
1922 | } | |
1923 | ||
1924 | /* send the packet to ports connected to multicast routers */ | |
1925 | static void | |
1926 | xlate_normal_mcast_send_mrouters(struct xlate_ctx *ctx, | |
1927 | struct mcast_snooping *ms, | |
1928 | struct xbundle *in_xbundle, uint16_t vlan) | |
1929 | OVS_REQ_RDLOCK(ms->rwlock) | |
1930 | { | |
1931 | struct xlate_cfg *xcfg; | |
1932 | struct mcast_mrouter_bundle *mrouter; | |
1933 | struct xbundle *mcast_xbundle; | |
1934 | ||
1935 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
1936 | LIST_FOR_EACH(mrouter, mrouter_node, &ms->mrouter_lru) { | |
1937 | mcast_xbundle = xbundle_lookup(xcfg, mrouter->port); | |
1938 | if (mcast_xbundle && mcast_xbundle != in_xbundle) { | |
1939 | xlate_report(ctx, "forwarding to mcast router port"); | |
1940 | output_normal(ctx, mcast_xbundle, vlan); | |
1941 | } else if (!mcast_xbundle) { | |
1942 | xlate_report(ctx, "mcast router port is unknown, dropping"); | |
1943 | } else { | |
1944 | xlate_report(ctx, "mcast router port is input port, dropping"); | |
1945 | } | |
1946 | } | |
1947 | } | |
1948 | ||
1949 | /* send the packet to ports flagged to be flooded */ | |
1950 | static void | |
1951 | xlate_normal_mcast_send_fports(struct xlate_ctx *ctx, | |
1952 | struct mcast_snooping *ms, | |
1953 | struct xbundle *in_xbundle, uint16_t vlan) | |
1954 | OVS_REQ_RDLOCK(ms->rwlock) | |
1955 | { | |
1956 | struct xlate_cfg *xcfg; | |
1957 | struct mcast_fport_bundle *fport; | |
1958 | struct xbundle *mcast_xbundle; | |
1959 | ||
1960 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
1961 | LIST_FOR_EACH(fport, fport_node, &ms->fport_list) { | |
1962 | mcast_xbundle = xbundle_lookup(xcfg, fport->port); | |
1963 | if (mcast_xbundle && mcast_xbundle != in_xbundle) { | |
1964 | xlate_report(ctx, "forwarding to mcast flood port"); | |
1965 | output_normal(ctx, mcast_xbundle, vlan); | |
1966 | } else if (!mcast_xbundle) { | |
1967 | xlate_report(ctx, "mcast flood port is unknown, dropping"); | |
1968 | } else { | |
1969 | xlate_report(ctx, "mcast flood port is input port, dropping"); | |
1970 | } | |
1971 | } | |
1972 | } | |
1973 | ||
682800a4 FL |
1974 | static void |
1975 | xlate_normal_flood(struct xlate_ctx *ctx, struct xbundle *in_xbundle, | |
1976 | uint16_t vlan) | |
1977 | { | |
1978 | struct xbundle *xbundle; | |
1979 | ||
1980 | LIST_FOR_EACH (xbundle, list_node, &ctx->xbridge->xbundles) { | |
1981 | if (xbundle != in_xbundle | |
1982 | && xbundle_includes_vlan(xbundle, vlan) | |
1983 | && xbundle->floodable | |
1984 | && !xbundle_mirror_out(ctx->xbridge, xbundle)) { | |
1985 | output_normal(ctx, xbundle, vlan); | |
1986 | } | |
1987 | } | |
1988 | ctx->xout->nf_output_iface = NF_OUT_FLOOD; | |
1989 | } | |
1990 | ||
9583bc14 EJ |
1991 | static void |
1992 | xlate_normal(struct xlate_ctx *ctx) | |
1993 | { | |
33bf9176 BP |
1994 | struct flow_wildcards *wc = &ctx->xout->wc; |
1995 | struct flow *flow = &ctx->xin->flow; | |
46c88433 EJ |
1996 | struct xbundle *in_xbundle; |
1997 | struct xport *in_port; | |
9583bc14 | 1998 | struct mac_entry *mac; |
d6d5bbc9 | 1999 | void *mac_port; |
9583bc14 EJ |
2000 | uint16_t vlan; |
2001 | uint16_t vid; | |
2002 | ||
2003 | ctx->xout->has_normal = true; | |
2004 | ||
33bf9176 BP |
2005 | memset(&wc->masks.dl_src, 0xff, sizeof wc->masks.dl_src); |
2006 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); | |
1dd35f8a | 2007 | wc->masks.vlan_tci |= htons(VLAN_VID_MASK | VLAN_CFI); |
9583bc14 | 2008 | |
46c88433 EJ |
2009 | in_xbundle = lookup_input_bundle(ctx->xbridge, flow->in_port.ofp_port, |
2010 | ctx->xin->packet != NULL, &in_port); | |
2011 | if (!in_xbundle) { | |
9583bc14 EJ |
2012 | xlate_report(ctx, "no input bundle, dropping"); |
2013 | return; | |
2014 | } | |
2015 | ||
2016 | /* Drop malformed frames. */ | |
33bf9176 BP |
2017 | if (flow->dl_type == htons(ETH_TYPE_VLAN) && |
2018 | !(flow->vlan_tci & htons(VLAN_CFI))) { | |
9583bc14 EJ |
2019 | if (ctx->xin->packet != NULL) { |
2020 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
2021 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet with partial " | |
2022 | "VLAN tag received on port %s", | |
46c88433 | 2023 | ctx->xbridge->name, in_xbundle->name); |
9583bc14 EJ |
2024 | } |
2025 | xlate_report(ctx, "partial VLAN tag, dropping"); | |
2026 | return; | |
2027 | } | |
2028 | ||
2029 | /* Drop frames on bundles reserved for mirroring. */ | |
46c88433 | 2030 | if (xbundle_mirror_out(ctx->xbridge, in_xbundle)) { |
9583bc14 EJ |
2031 | if (ctx->xin->packet != NULL) { |
2032 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
2033 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet received on port " | |
2034 | "%s, which is reserved exclusively for mirroring", | |
46c88433 | 2035 | ctx->xbridge->name, in_xbundle->name); |
9583bc14 EJ |
2036 | } |
2037 | xlate_report(ctx, "input port is mirror output port, dropping"); | |
2038 | return; | |
2039 | } | |
2040 | ||
2041 | /* Check VLAN. */ | |
33bf9176 | 2042 | vid = vlan_tci_to_vid(flow->vlan_tci); |
46c88433 | 2043 | if (!input_vid_is_valid(vid, in_xbundle, ctx->xin->packet != NULL)) { |
9583bc14 EJ |
2044 | xlate_report(ctx, "disallowed VLAN VID for this input port, dropping"); |
2045 | return; | |
2046 | } | |
46c88433 | 2047 | vlan = input_vid_to_vlan(in_xbundle, vid); |
9583bc14 EJ |
2048 | |
2049 | /* Check other admissibility requirements. */ | |
2050 | if (in_port && !is_admissible(ctx, in_port, vlan)) { | |
2051 | return; | |
2052 | } | |
2053 | ||
2054 | /* Learn source MAC. */ | |
2055 | if (ctx->xin->may_learn) { | |
46c88433 | 2056 | update_learning_table(ctx->xbridge, flow, wc, vlan, in_xbundle); |
9583bc14 | 2057 | } |
b256dc52 JS |
2058 | if (ctx->xin->xcache) { |
2059 | struct xc_entry *entry; | |
2060 | ||
2061 | /* Save enough info to update mac learning table later. */ | |
2062 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_NORMAL); | |
9edf6b48 | 2063 | entry->u.normal.ofproto = ctx->xbridge->ofproto; |
b256dc52 JS |
2064 | entry->u.normal.flow = xmemdup(flow, sizeof *flow); |
2065 | entry->u.normal.vlan = vlan; | |
2066 | } | |
9583bc14 EJ |
2067 | |
2068 | /* Determine output bundle. */ | |
86e2dcdd FL |
2069 | if (mcast_snooping_enabled(ctx->xbridge->ms) |
2070 | && !eth_addr_is_broadcast(flow->dl_dst) | |
2071 | && eth_addr_is_multicast(flow->dl_dst) | |
2072 | && flow->dl_type == htons(ETH_TYPE_IP)) { | |
2073 | struct mcast_snooping *ms = ctx->xbridge->ms; | |
2074 | struct mcast_group *grp; | |
2075 | ||
2076 | if (flow->nw_proto == IPPROTO_IGMP) { | |
2077 | if (ctx->xin->may_learn) { | |
2078 | if (mcast_snooping_is_membership(flow->tp_src) || | |
2079 | mcast_snooping_is_query(flow->tp_src)) { | |
2080 | update_mcast_snooping_table(ctx->xbridge, flow, vlan, | |
2081 | in_xbundle); | |
2082 | } | |
2083 | } | |
d6d5bbc9 | 2084 | |
86e2dcdd FL |
2085 | if (mcast_snooping_is_membership(flow->tp_src)) { |
2086 | ovs_rwlock_rdlock(&ms->rwlock); | |
2087 | xlate_normal_mcast_send_mrouters(ctx, ms, in_xbundle, vlan); | |
2088 | ovs_rwlock_unlock(&ms->rwlock); | |
2089 | } else { | |
2090 | xlate_report(ctx, "multicast traffic, flooding"); | |
2091 | xlate_normal_flood(ctx, in_xbundle, vlan); | |
2092 | } | |
2093 | return; | |
2094 | } else { | |
2095 | if (ip_is_local_multicast(flow->nw_dst)) { | |
2096 | /* RFC4541: section 2.1.2, item 2: Packets with a dst IP | |
2097 | * address in the 224.0.0.x range which are not IGMP must | |
2098 | * be forwarded on all ports */ | |
2099 | xlate_report(ctx, "RFC4541: section 2.1.2, item 2, flooding"); | |
2100 | xlate_normal_flood(ctx, in_xbundle, vlan); | |
2101 | return; | |
2102 | } | |
2103 | } | |
2104 | ||
2105 | /* forwarding to group base ports */ | |
2106 | ovs_rwlock_rdlock(&ms->rwlock); | |
2107 | grp = mcast_snooping_lookup(ms, flow->nw_dst, vlan); | |
2108 | if (grp) { | |
2109 | xlate_normal_mcast_send_group(ctx, ms, grp, in_xbundle, vlan); | |
2110 | xlate_normal_mcast_send_fports(ctx, ms, in_xbundle, vlan); | |
2111 | xlate_normal_mcast_send_mrouters(ctx, ms, in_xbundle, vlan); | |
9583bc14 | 2112 | } else { |
86e2dcdd FL |
2113 | if (mcast_snooping_flood_unreg(ms)) { |
2114 | xlate_report(ctx, "unregistered multicast, flooding"); | |
2115 | xlate_normal_flood(ctx, in_xbundle, vlan); | |
2116 | } else { | |
2117 | xlate_normal_mcast_send_mrouters(ctx, ms, in_xbundle, vlan); | |
2118 | xlate_normal_mcast_send_fports(ctx, ms, in_xbundle, vlan); | |
2119 | } | |
9583bc14 | 2120 | } |
86e2dcdd | 2121 | ovs_rwlock_unlock(&ms->rwlock); |
9583bc14 | 2122 | } else { |
86e2dcdd FL |
2123 | ovs_rwlock_rdlock(&ctx->xbridge->ml->rwlock); |
2124 | mac = mac_learning_lookup(ctx->xbridge->ml, flow->dl_dst, vlan); | |
2125 | mac_port = mac ? mac->port.p : NULL; | |
2126 | ovs_rwlock_unlock(&ctx->xbridge->ml->rwlock); | |
2127 | ||
2128 | if (mac_port) { | |
2129 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
2130 | struct xbundle *mac_xbundle = xbundle_lookup(xcfg, mac_port); | |
2131 | if (mac_xbundle && mac_xbundle != in_xbundle) { | |
2132 | xlate_report(ctx, "forwarding to learned port"); | |
2133 | output_normal(ctx, mac_xbundle, vlan); | |
2134 | } else if (!mac_xbundle) { | |
2135 | xlate_report(ctx, "learned port is unknown, dropping"); | |
2136 | } else { | |
2137 | xlate_report(ctx, "learned port is input port, dropping"); | |
2138 | } | |
2139 | } else { | |
2140 | xlate_report(ctx, "no learned MAC for destination, flooding"); | |
2141 | xlate_normal_flood(ctx, in_xbundle, vlan); | |
2142 | } | |
9583bc14 EJ |
2143 | } |
2144 | } | |
2145 | ||
2146 | /* Compose SAMPLE action for sFlow or IPFIX. The given probability is | |
2147 | * the number of packets out of UINT32_MAX to sample. The given | |
2148 | * cookie is passed back in the callback for each sampled packet. | |
2149 | */ | |
2150 | static size_t | |
46c88433 | 2151 | compose_sample_action(const struct xbridge *xbridge, |
9583bc14 EJ |
2152 | struct ofpbuf *odp_actions, |
2153 | const struct flow *flow, | |
2154 | const uint32_t probability, | |
2155 | const union user_action_cookie *cookie, | |
2156 | const size_t cookie_size) | |
2157 | { | |
2158 | size_t sample_offset, actions_offset; | |
89a8a7f0 | 2159 | odp_port_t odp_port; |
9583bc14 | 2160 | int cookie_offset; |
89a8a7f0 | 2161 | uint32_t pid; |
9583bc14 EJ |
2162 | |
2163 | sample_offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_SAMPLE); | |
2164 | ||
2165 | nl_msg_put_u32(odp_actions, OVS_SAMPLE_ATTR_PROBABILITY, probability); | |
2166 | ||
2167 | actions_offset = nl_msg_start_nested(odp_actions, OVS_SAMPLE_ATTR_ACTIONS); | |
89a8a7f0 EJ |
2168 | |
2169 | odp_port = ofp_port_to_odp_port(xbridge, flow->in_port.ofp_port); | |
9a159f74 AW |
2170 | pid = dpif_port_get_pid(xbridge->dpif, odp_port, |
2171 | flow_hash_5tuple(flow, 0)); | |
2172 | cookie_offset = odp_put_userspace_action(pid, cookie, cookie_size, | |
2173 | odp_actions); | |
9583bc14 EJ |
2174 | |
2175 | nl_msg_end_nested(odp_actions, actions_offset); | |
2176 | nl_msg_end_nested(odp_actions, sample_offset); | |
2177 | return cookie_offset; | |
2178 | } | |
2179 | ||
2180 | static void | |
46c88433 EJ |
2181 | compose_sflow_cookie(const struct xbridge *xbridge, ovs_be16 vlan_tci, |
2182 | odp_port_t odp_port, unsigned int n_outputs, | |
2183 | union user_action_cookie *cookie) | |
9583bc14 EJ |
2184 | { |
2185 | int ifindex; | |
2186 | ||
2187 | cookie->type = USER_ACTION_COOKIE_SFLOW; | |
2188 | cookie->sflow.vlan_tci = vlan_tci; | |
2189 | ||
2190 | /* See http://www.sflow.org/sflow_version_5.txt (search for "Input/output | |
2191 | * port information") for the interpretation of cookie->output. */ | |
2192 | switch (n_outputs) { | |
2193 | case 0: | |
2194 | /* 0x40000000 | 256 means "packet dropped for unknown reason". */ | |
2195 | cookie->sflow.output = 0x40000000 | 256; | |
2196 | break; | |
2197 | ||
2198 | case 1: | |
46c88433 | 2199 | ifindex = dpif_sflow_odp_port_to_ifindex(xbridge->sflow, odp_port); |
9583bc14 EJ |
2200 | if (ifindex) { |
2201 | cookie->sflow.output = ifindex; | |
2202 | break; | |
2203 | } | |
2204 | /* Fall through. */ | |
2205 | default: | |
2206 | /* 0x80000000 means "multiple output ports. */ | |
2207 | cookie->sflow.output = 0x80000000 | n_outputs; | |
2208 | break; | |
2209 | } | |
2210 | } | |
2211 | ||
2212 | /* Compose SAMPLE action for sFlow bridge sampling. */ | |
2213 | static size_t | |
46c88433 | 2214 | compose_sflow_action(const struct xbridge *xbridge, |
9583bc14 EJ |
2215 | struct ofpbuf *odp_actions, |
2216 | const struct flow *flow, | |
4e022ec0 | 2217 | odp_port_t odp_port) |
9583bc14 EJ |
2218 | { |
2219 | uint32_t probability; | |
2220 | union user_action_cookie cookie; | |
2221 | ||
46c88433 | 2222 | if (!xbridge->sflow || flow->in_port.ofp_port == OFPP_NONE) { |
9583bc14 EJ |
2223 | return 0; |
2224 | } | |
2225 | ||
46c88433 EJ |
2226 | probability = dpif_sflow_get_probability(xbridge->sflow); |
2227 | compose_sflow_cookie(xbridge, htons(0), odp_port, | |
4e022ec0 | 2228 | odp_port == ODPP_NONE ? 0 : 1, &cookie); |
9583bc14 | 2229 | |
46c88433 | 2230 | return compose_sample_action(xbridge, odp_actions, flow, probability, |
9583bc14 EJ |
2231 | &cookie, sizeof cookie.sflow); |
2232 | } | |
2233 | ||
2234 | static void | |
2235 | compose_flow_sample_cookie(uint16_t probability, uint32_t collector_set_id, | |
2236 | uint32_t obs_domain_id, uint32_t obs_point_id, | |
2237 | union user_action_cookie *cookie) | |
2238 | { | |
2239 | cookie->type = USER_ACTION_COOKIE_FLOW_SAMPLE; | |
2240 | cookie->flow_sample.probability = probability; | |
2241 | cookie->flow_sample.collector_set_id = collector_set_id; | |
2242 | cookie->flow_sample.obs_domain_id = obs_domain_id; | |
2243 | cookie->flow_sample.obs_point_id = obs_point_id; | |
2244 | } | |
2245 | ||
2246 | static void | |
2247 | compose_ipfix_cookie(union user_action_cookie *cookie) | |
2248 | { | |
2249 | cookie->type = USER_ACTION_COOKIE_IPFIX; | |
2250 | } | |
2251 | ||
2252 | /* Compose SAMPLE action for IPFIX bridge sampling. */ | |
2253 | static void | |
46c88433 | 2254 | compose_ipfix_action(const struct xbridge *xbridge, |
9583bc14 EJ |
2255 | struct ofpbuf *odp_actions, |
2256 | const struct flow *flow) | |
2257 | { | |
2258 | uint32_t probability; | |
2259 | union user_action_cookie cookie; | |
2260 | ||
46c88433 | 2261 | if (!xbridge->ipfix || flow->in_port.ofp_port == OFPP_NONE) { |
9583bc14 EJ |
2262 | return; |
2263 | } | |
2264 | ||
46c88433 | 2265 | probability = dpif_ipfix_get_bridge_exporter_probability(xbridge->ipfix); |
9583bc14 EJ |
2266 | compose_ipfix_cookie(&cookie); |
2267 | ||
46c88433 | 2268 | compose_sample_action(xbridge, odp_actions, flow, probability, |
9583bc14 EJ |
2269 | &cookie, sizeof cookie.ipfix); |
2270 | } | |
2271 | ||
2272 | /* SAMPLE action for sFlow must be first action in any given list of | |
2273 | * actions. At this point we do not have all information required to | |
2274 | * build it. So try to build sample action as complete as possible. */ | |
2275 | static void | |
2276 | add_sflow_action(struct xlate_ctx *ctx) | |
2277 | { | |
46c88433 | 2278 | ctx->user_cookie_offset = compose_sflow_action(ctx->xbridge, |
9583bc14 | 2279 | &ctx->xout->odp_actions, |
4e022ec0 | 2280 | &ctx->xin->flow, ODPP_NONE); |
9583bc14 EJ |
2281 | ctx->sflow_odp_port = 0; |
2282 | ctx->sflow_n_outputs = 0; | |
2283 | } | |
2284 | ||
2285 | /* SAMPLE action for IPFIX must be 1st or 2nd action in any given list | |
2286 | * of actions, eventually after the SAMPLE action for sFlow. */ | |
2287 | static void | |
2288 | add_ipfix_action(struct xlate_ctx *ctx) | |
2289 | { | |
46c88433 | 2290 | compose_ipfix_action(ctx->xbridge, &ctx->xout->odp_actions, |
9583bc14 EJ |
2291 | &ctx->xin->flow); |
2292 | } | |
2293 | ||
2294 | /* Fix SAMPLE action according to data collected while composing ODP actions. | |
2295 | * We need to fix SAMPLE actions OVS_SAMPLE_ATTR_ACTIONS attribute, i.e. nested | |
2296 | * USERSPACE action's user-cookie which is required for sflow. */ | |
2297 | static void | |
2298 | fix_sflow_action(struct xlate_ctx *ctx) | |
2299 | { | |
2300 | const struct flow *base = &ctx->base_flow; | |
2301 | union user_action_cookie *cookie; | |
2302 | ||
2303 | if (!ctx->user_cookie_offset) { | |
2304 | return; | |
2305 | } | |
2306 | ||
2307 | cookie = ofpbuf_at(&ctx->xout->odp_actions, ctx->user_cookie_offset, | |
2308 | sizeof cookie->sflow); | |
2309 | ovs_assert(cookie->type == USER_ACTION_COOKIE_SFLOW); | |
2310 | ||
46c88433 | 2311 | compose_sflow_cookie(ctx->xbridge, base->vlan_tci, |
9583bc14 EJ |
2312 | ctx->sflow_odp_port, ctx->sflow_n_outputs, cookie); |
2313 | } | |
2314 | ||
db7d4e46 | 2315 | static enum slow_path_reason |
642dc74d | 2316 | process_special(struct xlate_ctx *ctx, const struct flow *flow, |
46c88433 | 2317 | const struct xport *xport, const struct ofpbuf *packet) |
db7d4e46 | 2318 | { |
642dc74d | 2319 | struct flow_wildcards *wc = &ctx->xout->wc; |
46c88433 | 2320 | const struct xbridge *xbridge = ctx->xbridge; |
642dc74d | 2321 | |
46c88433 | 2322 | if (!xport) { |
db7d4e46 | 2323 | return 0; |
46c88433 | 2324 | } else if (xport->cfm && cfm_should_process_flow(xport->cfm, flow, wc)) { |
db7d4e46 | 2325 | if (packet) { |
46c88433 | 2326 | cfm_process_heartbeat(xport->cfm, packet); |
db7d4e46 JP |
2327 | } |
2328 | return SLOW_CFM; | |
fab52e16 | 2329 | } else if (xport->bfd && bfd_should_process_flow(xport->bfd, flow, wc)) { |
db7d4e46 | 2330 | if (packet) { |
46c88433 | 2331 | bfd_process_packet(xport->bfd, flow, packet); |
60d02c72 AW |
2332 | /* If POLL received, immediately sends FINAL back. */ |
2333 | if (bfd_should_send_packet(xport->bfd)) { | |
6d308b28 | 2334 | ofproto_dpif_monitor_port_send_soon(xport->ofport); |
60d02c72 | 2335 | } |
db7d4e46 JP |
2336 | } |
2337 | return SLOW_BFD; | |
46c88433 | 2338 | } else if (xport->xbundle && xport->xbundle->lacp |
db7d4e46 JP |
2339 | && flow->dl_type == htons(ETH_TYPE_LACP)) { |
2340 | if (packet) { | |
46c88433 | 2341 | lacp_process_packet(xport->xbundle->lacp, xport->ofport, packet); |
db7d4e46 JP |
2342 | } |
2343 | return SLOW_LACP; | |
9d189a50 | 2344 | } else if (xbridge->stp && stp_should_process_flow(flow, wc)) { |
db7d4e46 | 2345 | if (packet) { |
9d189a50 | 2346 | stp_process_packet(xport, packet); |
db7d4e46 JP |
2347 | } |
2348 | return SLOW_STP; | |
2349 | } else { | |
2350 | return 0; | |
2351 | } | |
2352 | } | |
2353 | ||
9583bc14 | 2354 | static void |
4e022ec0 | 2355 | compose_output_action__(struct xlate_ctx *ctx, ofp_port_t ofp_port, |
9583bc14 EJ |
2356 | bool check_stp) |
2357 | { | |
46c88433 | 2358 | const struct xport *xport = get_ofp_port(ctx->xbridge, ofp_port); |
1dd35f8a | 2359 | struct flow_wildcards *wc = &ctx->xout->wc; |
33bf9176 | 2360 | struct flow *flow = &ctx->xin->flow; |
9583bc14 | 2361 | ovs_be16 flow_vlan_tci; |
1362e248 | 2362 | uint32_t flow_pkt_mark; |
9583bc14 | 2363 | uint8_t flow_nw_tos; |
4e022ec0 | 2364 | odp_port_t out_port, odp_port; |
ca077186 | 2365 | uint8_t dscp; |
9583bc14 EJ |
2366 | |
2367 | /* If 'struct flow' gets additional metadata, we'll need to zero it out | |
2368 | * before traversing a patch port. */ | |
0e612675 | 2369 | BUILD_ASSERT_DECL(FLOW_WC_SEQ == 27); |
9583bc14 | 2370 | |
46c88433 | 2371 | if (!xport) { |
9583bc14 EJ |
2372 | xlate_report(ctx, "Nonexistent output port"); |
2373 | return; | |
46c88433 | 2374 | } else if (xport->config & OFPUTIL_PC_NO_FWD) { |
9583bc14 EJ |
2375 | xlate_report(ctx, "OFPPC_NO_FWD set, skipping output"); |
2376 | return; | |
0d1cee12 | 2377 | } else if (check_stp) { |
bbbca389 | 2378 | if (is_stp(&ctx->base_flow)) { |
bacdb85a | 2379 | if (!xport_stp_should_forward_bpdu(xport)) { |
0d1cee12 K |
2380 | xlate_report(ctx, "STP not in listening state, " |
2381 | "skipping bpdu output"); | |
2382 | return; | |
2383 | } | |
2384 | } else if (!xport_stp_forward_state(xport)) { | |
2385 | xlate_report(ctx, "STP not in forwarding state, " | |
2386 | "skipping output"); | |
2387 | return; | |
2388 | } | |
9583bc14 EJ |
2389 | } |
2390 | ||
46c88433 EJ |
2391 | if (mbridge_has_mirrors(ctx->xbridge->mbridge) && xport->xbundle) { |
2392 | ctx->xout->mirrors |= xbundle_mirror_dst(xport->xbundle->xbridge, | |
2393 | xport->xbundle); | |
cdf5d3a5 EJ |
2394 | } |
2395 | ||
46c88433 EJ |
2396 | if (xport->peer) { |
2397 | const struct xport *peer = xport->peer; | |
9583bc14 | 2398 | struct flow old_flow = ctx->xin->flow; |
9583bc14 | 2399 | enum slow_path_reason special; |
9583bc14 | 2400 | |
46c88433 EJ |
2401 | ctx->xbridge = peer->xbridge; |
2402 | flow->in_port.ofp_port = peer->ofp_port; | |
33bf9176 BP |
2403 | flow->metadata = htonll(0); |
2404 | memset(&flow->tunnel, 0, sizeof flow->tunnel); | |
2405 | memset(flow->regs, 0, sizeof flow->regs); | |
9583bc14 | 2406 | |
642dc74d | 2407 | special = process_special(ctx, &ctx->xin->flow, peer, |
9583bc14 EJ |
2408 | ctx->xin->packet); |
2409 | if (special) { | |
04594cd5 | 2410 | ctx->xout->slow |= special; |
ddd3c975 | 2411 | } else if (may_receive(peer, ctx)) { |
9d189a50 | 2412 | if (xport_stp_forward_state(peer)) { |
6d328fa2 | 2413 | xlate_table_action(ctx, flow->in_port.ofp_port, 0, true, true); |
9583bc14 EJ |
2414 | } else { |
2415 | /* Forwarding is disabled by STP. Let OFPP_NORMAL and the | |
2416 | * learning action look at the packet, then drop it. */ | |
2417 | struct flow old_base_flow = ctx->base_flow; | |
1f317cb5 | 2418 | size_t old_size = ofpbuf_size(&ctx->xout->odp_actions); |
cdf5d3a5 | 2419 | mirror_mask_t old_mirrors = ctx->xout->mirrors; |
6d328fa2 | 2420 | xlate_table_action(ctx, flow->in_port.ofp_port, 0, true, true); |
cdf5d3a5 | 2421 | ctx->xout->mirrors = old_mirrors; |
9583bc14 | 2422 | ctx->base_flow = old_base_flow; |
1f317cb5 | 2423 | ofpbuf_set_size(&ctx->xout->odp_actions, old_size); |
9583bc14 EJ |
2424 | } |
2425 | } | |
2426 | ||
2427 | ctx->xin->flow = old_flow; | |
832554e3 | 2428 | ctx->xbridge = xport->xbridge; |
9583bc14 EJ |
2429 | |
2430 | if (ctx->xin->resubmit_stats) { | |
46c88433 EJ |
2431 | netdev_vport_inc_tx(xport->netdev, ctx->xin->resubmit_stats); |
2432 | netdev_vport_inc_rx(peer->netdev, ctx->xin->resubmit_stats); | |
a1aeea86 AW |
2433 | if (peer->bfd) { |
2434 | bfd_account_rx(peer->bfd, ctx->xin->resubmit_stats); | |
2435 | } | |
9583bc14 | 2436 | } |
b256dc52 JS |
2437 | if (ctx->xin->xcache) { |
2438 | struct xc_entry *entry; | |
2439 | ||
2440 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_NETDEV); | |
2441 | entry->u.dev.tx = netdev_ref(xport->netdev); | |
2442 | entry->u.dev.rx = netdev_ref(peer->netdev); | |
2443 | entry->u.dev.bfd = bfd_ref(peer->bfd); | |
2444 | } | |
9583bc14 EJ |
2445 | return; |
2446 | } | |
2447 | ||
33bf9176 | 2448 | flow_vlan_tci = flow->vlan_tci; |
1362e248 | 2449 | flow_pkt_mark = flow->pkt_mark; |
33bf9176 | 2450 | flow_nw_tos = flow->nw_tos; |
9583bc14 | 2451 | |
55954f6e | 2452 | if (dscp_from_skb_priority(xport, flow->skb_priority, &dscp)) { |
1ac9326d | 2453 | wc->masks.nw_tos |= IP_DSCP_MASK; |
33bf9176 | 2454 | flow->nw_tos &= ~IP_DSCP_MASK; |
ca077186 | 2455 | flow->nw_tos |= dscp; |
9583bc14 EJ |
2456 | } |
2457 | ||
46c88433 | 2458 | if (xport->is_tunnel) { |
9583bc14 EJ |
2459 | /* Save tunnel metadata so that changes made due to |
2460 | * the Logical (tunnel) Port are not visible for any further | |
2461 | * matches, while explicit set actions on tunnel metadata are. | |
2462 | */ | |
33bf9176 | 2463 | struct flow_tnl flow_tnl = flow->tunnel; |
46c88433 | 2464 | odp_port = tnl_port_send(xport->ofport, flow, &ctx->xout->wc); |
4e022ec0 | 2465 | if (odp_port == ODPP_NONE) { |
9583bc14 EJ |
2466 | xlate_report(ctx, "Tunneling decided against output"); |
2467 | goto out; /* restore flow_nw_tos */ | |
2468 | } | |
33bf9176 | 2469 | if (flow->tunnel.ip_dst == ctx->orig_tunnel_ip_dst) { |
9583bc14 EJ |
2470 | xlate_report(ctx, "Not tunneling to our own address"); |
2471 | goto out; /* restore flow_nw_tos */ | |
2472 | } | |
2473 | if (ctx->xin->resubmit_stats) { | |
46c88433 | 2474 | netdev_vport_inc_tx(xport->netdev, ctx->xin->resubmit_stats); |
9583bc14 | 2475 | } |
b256dc52 JS |
2476 | if (ctx->xin->xcache) { |
2477 | struct xc_entry *entry; | |
2478 | ||
2479 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_NETDEV); | |
2480 | entry->u.dev.tx = netdev_ref(xport->netdev); | |
2481 | } | |
9583bc14 | 2482 | out_port = odp_port; |
33bf9176 | 2483 | commit_odp_tunnel_action(flow, &ctx->base_flow, |
9583bc14 | 2484 | &ctx->xout->odp_actions); |
33bf9176 | 2485 | flow->tunnel = flow_tnl; /* Restore tunnel metadata */ |
9583bc14 | 2486 | } else { |
46c88433 | 2487 | odp_port = xport->odp_port; |
7614e5d0 | 2488 | out_port = odp_port; |
46c88433 | 2489 | if (ofproto_has_vlan_splinters(ctx->xbridge->ofproto)) { |
7614e5d0 JR |
2490 | ofp_port_t vlandev_port; |
2491 | ||
1dd35f8a | 2492 | wc->masks.vlan_tci |= htons(VLAN_VID_MASK | VLAN_CFI); |
7614e5d0 JR |
2493 | vlandev_port = vsp_realdev_to_vlandev(ctx->xbridge->ofproto, |
2494 | ofp_port, flow->vlan_tci); | |
2495 | if (vlandev_port != ofp_port) { | |
2496 | out_port = ofp_port_to_odp_port(ctx->xbridge, vlandev_port); | |
2497 | flow->vlan_tci = htons(0); | |
2498 | } | |
9583bc14 | 2499 | } |
9583bc14 | 2500 | } |
9583bc14 | 2501 | |
4e022ec0 | 2502 | if (out_port != ODPP_NONE) { |
7fd91025 BP |
2503 | ctx->xout->slow |= commit_odp_actions(flow, &ctx->base_flow, |
2504 | &ctx->xout->odp_actions, | |
8bfd0fda | 2505 | &ctx->xout->wc); |
adcf00ba | 2506 | |
92c08f09 | 2507 | if (ctx->use_recirc) { |
347bf289 | 2508 | struct ovs_action_hash *act_hash; |
92c08f09 | 2509 | struct xlate_recirc *xr = &ctx->recirc; |
adcf00ba | 2510 | |
347bf289 AZ |
2511 | /* Hash action. */ |
2512 | act_hash = nl_msg_put_unspec_uninit(&ctx->xout->odp_actions, | |
2513 | OVS_ACTION_ATTR_HASH, | |
2514 | sizeof *act_hash); | |
2515 | act_hash->hash_alg = xr->hash_alg; | |
62ac1f20 | 2516 | act_hash->hash_basis = xr->hash_basis; |
347bf289 AZ |
2517 | |
2518 | /* Recirc action. */ | |
2519 | nl_msg_put_u32(&ctx->xout->odp_actions, OVS_ACTION_ATTR_RECIRC, | |
2520 | xr->recirc_id); | |
adcf00ba AZ |
2521 | } else { |
2522 | nl_msg_put_odp_port(&ctx->xout->odp_actions, OVS_ACTION_ATTR_OUTPUT, | |
2523 | out_port); | |
2524 | } | |
9583bc14 | 2525 | |
6cbbf4fa EJ |
2526 | ctx->sflow_odp_port = odp_port; |
2527 | ctx->sflow_n_outputs++; | |
2528 | ctx->xout->nf_output_iface = ofp_port; | |
2529 | } | |
2530 | ||
2531 | out: | |
9583bc14 | 2532 | /* Restore flow */ |
33bf9176 | 2533 | flow->vlan_tci = flow_vlan_tci; |
1362e248 | 2534 | flow->pkt_mark = flow_pkt_mark; |
33bf9176 | 2535 | flow->nw_tos = flow_nw_tos; |
9583bc14 EJ |
2536 | } |
2537 | ||
2538 | static void | |
4e022ec0 | 2539 | compose_output_action(struct xlate_ctx *ctx, ofp_port_t ofp_port) |
9583bc14 EJ |
2540 | { |
2541 | compose_output_action__(ctx, ofp_port, true); | |
2542 | } | |
2543 | ||
bb61b33d BP |
2544 | static void |
2545 | xlate_recursively(struct xlate_ctx *ctx, struct rule_dpif *rule) | |
bb61b33d BP |
2546 | { |
2547 | struct rule_dpif *old_rule = ctx->rule; | |
dc723c44 | 2548 | const struct rule_actions *actions; |
bb61b33d BP |
2549 | |
2550 | if (ctx->xin->resubmit_stats) { | |
70742c7f | 2551 | rule_dpif_credit_stats(rule, ctx->xin->resubmit_stats); |
bb61b33d BP |
2552 | } |
2553 | ||
98b07853 | 2554 | ctx->resubmits++; |
bb61b33d BP |
2555 | ctx->recurse++; |
2556 | ctx->rule = rule; | |
6f00e29b BP |
2557 | actions = rule_dpif_get_actions(rule); |
2558 | do_xlate_actions(actions->ofpacts, actions->ofpacts_len, ctx); | |
bb61b33d BP |
2559 | ctx->rule = old_rule; |
2560 | ctx->recurse--; | |
bb61b33d BP |
2561 | } |
2562 | ||
bd3240ba SH |
2563 | static bool |
2564 | xlate_resubmit_resource_check(struct xlate_ctx *ctx) | |
9583bc14 | 2565 | { |
98b07853 BP |
2566 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); |
2567 | ||
adcf00ba | 2568 | if (ctx->recurse >= MAX_RESUBMIT_RECURSION + MAX_INTERNAL_RESUBMITS) { |
98b07853 BP |
2569 | VLOG_ERR_RL(&rl, "resubmit actions recursed over %d times", |
2570 | MAX_RESUBMIT_RECURSION); | |
adcf00ba | 2571 | } else if (ctx->resubmits >= MAX_RESUBMITS + MAX_INTERNAL_RESUBMITS) { |
98b07853 | 2572 | VLOG_ERR_RL(&rl, "over %d resubmit actions", MAX_RESUBMITS); |
1f317cb5 | 2573 | } else if (ofpbuf_size(&ctx->xout->odp_actions) > UINT16_MAX) { |
98b07853 | 2574 | VLOG_ERR_RL(&rl, "resubmits yielded over 64 kB of actions"); |
1f317cb5 | 2575 | } else if (ofpbuf_size(&ctx->stack) >= 65536) { |
98b07853 BP |
2576 | VLOG_ERR_RL(&rl, "resubmits yielded over 64 kB of stack"); |
2577 | } else { | |
bd3240ba SH |
2578 | return true; |
2579 | } | |
2580 | ||
2581 | return false; | |
2582 | } | |
2583 | ||
2584 | static void | |
6d328fa2 SH |
2585 | xlate_table_action(struct xlate_ctx *ctx, ofp_port_t in_port, uint8_t table_id, |
2586 | bool may_packet_in, bool honor_table_miss) | |
bd3240ba SH |
2587 | { |
2588 | if (xlate_resubmit_resource_check(ctx)) { | |
4e022ec0 | 2589 | ofp_port_t old_in_port = ctx->xin->flow.in_port.ofp_port; |
3f207910 | 2590 | bool skip_wildcards = ctx->xin->skip_wildcards; |
9583bc14 | 2591 | uint8_t old_table_id = ctx->table_id; |
3f207910 | 2592 | struct rule_dpif *rule; |
6d328fa2 SH |
2593 | enum rule_dpif_lookup_verdict verdict; |
2594 | enum ofputil_port_config config = 0; | |
9583bc14 EJ |
2595 | |
2596 | ctx->table_id = table_id; | |
2597 | ||
bb61b33d BP |
2598 | /* Look up a flow with 'in_port' as the input port. Then restore the |
2599 | * original input port (otherwise OFPP_NORMAL and OFPP_IN_PORT will | |
2600 | * have surprising behavior). */ | |
4e022ec0 | 2601 | ctx->xin->flow.in_port.ofp_port = in_port; |
6d328fa2 SH |
2602 | verdict = rule_dpif_lookup_from_table(ctx->xbridge->ofproto, |
2603 | &ctx->xin->flow, | |
2604 | !skip_wildcards | |
2605 | ? &ctx->xout->wc : NULL, | |
2606 | honor_table_miss, | |
83709dfa | 2607 | &ctx->table_id, &rule, |
d611866c SH |
2608 | ctx->xin->xcache != NULL, |
2609 | ctx->xin->resubmit_stats); | |
4e022ec0 | 2610 | ctx->xin->flow.in_port.ofp_port = old_in_port; |
9583bc14 | 2611 | |
ad3efdcb EJ |
2612 | if (ctx->xin->resubmit_hook) { |
2613 | ctx->xin->resubmit_hook(ctx->xin, rule, ctx->recurse); | |
2614 | } | |
2615 | ||
6d328fa2 SH |
2616 | switch (verdict) { |
2617 | case RULE_DPIF_LOOKUP_VERDICT_MATCH: | |
2618 | goto match; | |
2619 | case RULE_DPIF_LOOKUP_VERDICT_CONTROLLER: | |
2620 | if (may_packet_in) { | |
2621 | struct xport *xport; | |
2622 | ||
2623 | xport = get_ofp_port(ctx->xbridge, | |
2624 | ctx->xin->flow.in_port.ofp_port); | |
2625 | config = xport ? xport->config : 0; | |
2626 | break; | |
2627 | } | |
2628 | /* Fall through to drop */ | |
2629 | case RULE_DPIF_LOOKUP_VERDICT_DROP: | |
2630 | config = OFPUTIL_PC_NO_PACKET_IN; | |
2631 | break; | |
6b83a3c5 SH |
2632 | case RULE_DPIF_LOOKUP_VERDICT_DEFAULT: |
2633 | if (!ofproto_dpif_wants_packet_in_on_miss(ctx->xbridge->ofproto)) { | |
2634 | config = OFPUTIL_PC_NO_PACKET_IN; | |
2635 | } | |
2636 | break; | |
6d328fa2 SH |
2637 | default: |
2638 | OVS_NOT_REACHED(); | |
a2143702 | 2639 | } |
6d328fa2 SH |
2640 | |
2641 | choose_miss_rule(config, ctx->xbridge->miss_rule, | |
83709dfa JR |
2642 | ctx->xbridge->no_packet_in_rule, &rule, |
2643 | ctx->xin->xcache != NULL); | |
6d328fa2 SH |
2644 | |
2645 | match: | |
a2143702 | 2646 | if (rule) { |
83709dfa JR |
2647 | /* Fill in the cache entry here instead of xlate_recursively |
2648 | * to make the reference counting more explicit. We take a | |
2649 | * reference in the lookups above if we are going to cache the | |
2650 | * rule. */ | |
2651 | if (ctx->xin->xcache) { | |
2652 | struct xc_entry *entry; | |
2653 | ||
2654 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_RULE); | |
2655 | entry->u.rule = rule; | |
2656 | } | |
bb61b33d | 2657 | xlate_recursively(ctx, rule); |
ad3efdcb EJ |
2658 | } |
2659 | ||
9583bc14 | 2660 | ctx->table_id = old_table_id; |
98b07853 | 2661 | return; |
9583bc14 | 2662 | } |
98b07853 BP |
2663 | |
2664 | ctx->exit = true; | |
9583bc14 EJ |
2665 | } |
2666 | ||
f4fb341b | 2667 | static void |
1e684d7d RW |
2668 | xlate_group_stats(struct xlate_ctx *ctx, struct group_dpif *group, |
2669 | struct ofputil_bucket *bucket) | |
2670 | { | |
2671 | if (ctx->xin->resubmit_stats) { | |
2672 | group_dpif_credit_stats(group, bucket, ctx->xin->resubmit_stats); | |
2673 | } | |
2674 | if (ctx->xin->xcache) { | |
2675 | struct xc_entry *entry; | |
2676 | ||
2677 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_GROUP); | |
2678 | entry->u.group.group = group_dpif_ref(group); | |
2679 | entry->u.group.bucket = bucket; | |
2680 | } | |
2681 | } | |
2682 | ||
2683 | static void | |
2684 | xlate_group_bucket(struct xlate_ctx *ctx, struct ofputil_bucket *bucket) | |
f4fb341b SH |
2685 | { |
2686 | uint64_t action_list_stub[1024 / 8]; | |
2687 | struct ofpbuf action_list, action_set; | |
2688 | ||
2689 | ofpbuf_use_const(&action_set, bucket->ofpacts, bucket->ofpacts_len); | |
2690 | ofpbuf_use_stub(&action_list, action_list_stub, sizeof action_list_stub); | |
2691 | ||
2692 | ofpacts_execute_action_set(&action_list, &action_set); | |
2693 | ctx->recurse++; | |
1f317cb5 | 2694 | do_xlate_actions(ofpbuf_data(&action_list), ofpbuf_size(&action_list), ctx); |
f4fb341b SH |
2695 | ctx->recurse--; |
2696 | ||
2697 | ofpbuf_uninit(&action_set); | |
2698 | ofpbuf_uninit(&action_list); | |
2699 | } | |
2700 | ||
2701 | static void | |
2702 | xlate_all_group(struct xlate_ctx *ctx, struct group_dpif *group) | |
2703 | { | |
1e684d7d | 2704 | struct ofputil_bucket *bucket; |
f4fb341b SH |
2705 | const struct list *buckets; |
2706 | struct flow old_flow = ctx->xin->flow; | |
2707 | ||
2708 | group_dpif_get_buckets(group, &buckets); | |
2709 | ||
2710 | LIST_FOR_EACH (bucket, list_node, buckets) { | |
2711 | xlate_group_bucket(ctx, bucket); | |
2712 | /* Roll back flow to previous state. | |
2713 | * This is equivalent to cloning the packet for each bucket. | |
2714 | * | |
2715 | * As a side effect any subsequently applied actions will | |
2716 | * also effectively be applied to a clone of the packet taken | |
2717 | * just before applying the all or indirect group. */ | |
2718 | ctx->xin->flow = old_flow; | |
2719 | } | |
1e684d7d | 2720 | xlate_group_stats(ctx, group, NULL); |
f4fb341b SH |
2721 | } |
2722 | ||
dd8cd4b4 SH |
2723 | static void |
2724 | xlate_ff_group(struct xlate_ctx *ctx, struct group_dpif *group) | |
2725 | { | |
1e684d7d | 2726 | struct ofputil_bucket *bucket; |
dd8cd4b4 SH |
2727 | |
2728 | bucket = group_first_live_bucket(ctx, group, 0); | |
2729 | if (bucket) { | |
2730 | xlate_group_bucket(ctx, bucket); | |
1e684d7d | 2731 | xlate_group_stats(ctx, group, bucket); |
dd8cd4b4 SH |
2732 | } |
2733 | } | |
2734 | ||
fe7e5749 SH |
2735 | static void |
2736 | xlate_select_group(struct xlate_ctx *ctx, struct group_dpif *group) | |
2737 | { | |
2738 | struct flow_wildcards *wc = &ctx->xout->wc; | |
1e684d7d | 2739 | struct ofputil_bucket *bucket; |
fe7e5749 SH |
2740 | uint32_t basis; |
2741 | ||
7e36ac42 | 2742 | basis = hash_mac(ctx->xin->flow.dl_dst, 0, 0); |
fe7e5749 SH |
2743 | bucket = group_best_live_bucket(ctx, group, basis); |
2744 | if (bucket) { | |
2745 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); | |
2746 | xlate_group_bucket(ctx, bucket); | |
1e684d7d | 2747 | xlate_group_stats(ctx, group, bucket); |
fe7e5749 SH |
2748 | } |
2749 | } | |
2750 | ||
f4fb341b SH |
2751 | static void |
2752 | xlate_group_action__(struct xlate_ctx *ctx, struct group_dpif *group) | |
2753 | { | |
5a070238 BP |
2754 | ctx->in_group = true; |
2755 | ||
f4fb341b SH |
2756 | switch (group_dpif_get_type(group)) { |
2757 | case OFPGT11_ALL: | |
2758 | case OFPGT11_INDIRECT: | |
2759 | xlate_all_group(ctx, group); | |
2760 | break; | |
2761 | case OFPGT11_SELECT: | |
fe7e5749 | 2762 | xlate_select_group(ctx, group); |
f4fb341b | 2763 | break; |
dd8cd4b4 SH |
2764 | case OFPGT11_FF: |
2765 | xlate_ff_group(ctx, group); | |
2766 | break; | |
f4fb341b | 2767 | default: |
428b2edd | 2768 | OVS_NOT_REACHED(); |
f4fb341b | 2769 | } |
809c7548 | 2770 | group_dpif_unref(group); |
5a070238 BP |
2771 | |
2772 | ctx->in_group = false; | |
2773 | } | |
2774 | ||
2775 | static bool | |
2776 | xlate_group_resource_check(struct xlate_ctx *ctx) | |
2777 | { | |
2778 | if (!xlate_resubmit_resource_check(ctx)) { | |
2779 | return false; | |
2780 | } else if (ctx->in_group) { | |
2781 | /* Prevent nested translation of OpenFlow groups. | |
2782 | * | |
2783 | * OpenFlow allows this restriction. We enforce this restriction only | |
2784 | * because, with the current architecture, we would otherwise have to | |
2785 | * take a possibly recursive read lock on the ofgroup rwlock, which is | |
2786 | * unsafe given that POSIX allows taking a read lock to block if there | |
2787 | * is a thread blocked on taking the write lock. Other solutions | |
2788 | * without this restriction are also possible, but seem unwarranted | |
2789 | * given the current limited use of groups. */ | |
2790 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); | |
2791 | ||
2792 | VLOG_ERR_RL(&rl, "cannot recursively translate OpenFlow group"); | |
2793 | return false; | |
2794 | } else { | |
2795 | return true; | |
2796 | } | |
f4fb341b SH |
2797 | } |
2798 | ||
2799 | static bool | |
2800 | xlate_group_action(struct xlate_ctx *ctx, uint32_t group_id) | |
2801 | { | |
5a070238 | 2802 | if (xlate_group_resource_check(ctx)) { |
f4fb341b SH |
2803 | struct group_dpif *group; |
2804 | bool got_group; | |
2805 | ||
2806 | got_group = group_dpif_lookup(ctx->xbridge->ofproto, group_id, &group); | |
2807 | if (got_group) { | |
2808 | xlate_group_action__(ctx, group); | |
2809 | } else { | |
2810 | return true; | |
2811 | } | |
2812 | } | |
2813 | ||
2814 | return false; | |
2815 | } | |
2816 | ||
9583bc14 EJ |
2817 | static void |
2818 | xlate_ofpact_resubmit(struct xlate_ctx *ctx, | |
2819 | const struct ofpact_resubmit *resubmit) | |
2820 | { | |
4e022ec0 | 2821 | ofp_port_t in_port; |
9583bc14 | 2822 | uint8_t table_id; |
adcf00ba AZ |
2823 | bool may_packet_in = false; |
2824 | bool honor_table_miss = false; | |
2825 | ||
2826 | if (ctx->rule && rule_dpif_is_internal(ctx->rule)) { | |
2827 | /* Still allow missed packets to be sent to the controller | |
2828 | * if resubmitting from an internal table. */ | |
2829 | may_packet_in = true; | |
2830 | honor_table_miss = true; | |
2831 | } | |
9583bc14 EJ |
2832 | |
2833 | in_port = resubmit->in_port; | |
2834 | if (in_port == OFPP_IN_PORT) { | |
4e022ec0 | 2835 | in_port = ctx->xin->flow.in_port.ofp_port; |
9583bc14 EJ |
2836 | } |
2837 | ||
2838 | table_id = resubmit->table_id; | |
2839 | if (table_id == 255) { | |
2840 | table_id = ctx->table_id; | |
2841 | } | |
2842 | ||
adcf00ba AZ |
2843 | xlate_table_action(ctx, in_port, table_id, may_packet_in, |
2844 | honor_table_miss); | |
9583bc14 EJ |
2845 | } |
2846 | ||
2847 | static void | |
2848 | flood_packets(struct xlate_ctx *ctx, bool all) | |
2849 | { | |
46c88433 | 2850 | const struct xport *xport; |
9583bc14 | 2851 | |
46c88433 EJ |
2852 | HMAP_FOR_EACH (xport, ofp_node, &ctx->xbridge->xports) { |
2853 | if (xport->ofp_port == ctx->xin->flow.in_port.ofp_port) { | |
9583bc14 EJ |
2854 | continue; |
2855 | } | |
2856 | ||
2857 | if (all) { | |
46c88433 EJ |
2858 | compose_output_action__(ctx, xport->ofp_port, false); |
2859 | } else if (!(xport->config & OFPUTIL_PC_NO_FLOOD)) { | |
2860 | compose_output_action(ctx, xport->ofp_port); | |
9583bc14 EJ |
2861 | } |
2862 | } | |
2863 | ||
2864 | ctx->xout->nf_output_iface = NF_OUT_FLOOD; | |
2865 | } | |
2866 | ||
2867 | static void | |
2868 | execute_controller_action(struct xlate_ctx *ctx, int len, | |
2869 | enum ofp_packet_in_reason reason, | |
2870 | uint16_t controller_id) | |
2871 | { | |
0fb7792a | 2872 | struct ofproto_packet_in *pin; |
91088554 | 2873 | struct dpif_packet *packet; |
758c456d | 2874 | struct pkt_metadata md = PKT_METADATA_INITIALIZER(0); |
9583bc14 | 2875 | |
04594cd5 | 2876 | ctx->xout->slow |= SLOW_CONTROLLER; |
9583bc14 EJ |
2877 | if (!ctx->xin->packet) { |
2878 | return; | |
2879 | } | |
2880 | ||
91088554 | 2881 | packet = dpif_packet_clone_from_ofpbuf(ctx->xin->packet); |
9583bc14 | 2882 | |
7fd91025 BP |
2883 | ctx->xout->slow |= commit_odp_actions(&ctx->xin->flow, &ctx->base_flow, |
2884 | &ctx->xout->odp_actions, | |
8bfd0fda | 2885 | &ctx->xout->wc); |
9583bc14 | 2886 | |
8cbf4f47 | 2887 | odp_execute_actions(NULL, &packet, 1, false, &md, |
1f317cb5 PS |
2888 | ofpbuf_data(&ctx->xout->odp_actions), |
2889 | ofpbuf_size(&ctx->xout->odp_actions), NULL); | |
9583bc14 | 2890 | |
ada3a58d | 2891 | pin = xmalloc(sizeof *pin); |
91088554 DDP |
2892 | pin->up.packet_len = ofpbuf_size(&packet->ofpbuf); |
2893 | pin->up.packet = ofpbuf_steal_data(&packet->ofpbuf); | |
0fb7792a | 2894 | pin->up.reason = reason; |
0fb7792a | 2895 | pin->up.table_id = ctx->table_id; |
d4fa4e79 BP |
2896 | pin->up.cookie = (ctx->rule |
2897 | ? rule_dpif_get_flow_cookie(ctx->rule) | |
2898 | : OVS_BE64_MAX); | |
0fb7792a | 2899 | |
0fb7792a | 2900 | flow_get_metadata(&ctx->xin->flow, &pin->up.fmd); |
9583bc14 | 2901 | |
f11c7538 | 2902 | pin->controller_id = controller_id; |
d38a3c7b | 2903 | pin->send_len = len; |
32260212 SH |
2904 | /* If a rule is a table-miss rule then this is |
2905 | * a table-miss handled by a table-miss rule. | |
2906 | * | |
2907 | * Else, if rule is internal and has a controller action, | |
2908 | * the later being implied by the rule being processed here, | |
2909 | * then this is a table-miss handled without a table-miss rule. | |
2910 | * | |
2911 | * Otherwise this is not a table-miss. */ | |
2912 | pin->miss_type = OFPROTO_PACKET_IN_NO_MISS; | |
2913 | if (ctx->rule) { | |
2914 | if (rule_dpif_is_table_miss(ctx->rule)) { | |
2915 | pin->miss_type = OFPROTO_PACKET_IN_MISS_FLOW; | |
2916 | } else if (rule_dpif_is_internal(ctx->rule)) { | |
2917 | pin->miss_type = OFPROTO_PACKET_IN_MISS_WITHOUT_FLOW; | |
2918 | } | |
2919 | } | |
ada3a58d | 2920 | ofproto_dpif_send_packet_in(ctx->xbridge->ofproto, pin); |
91088554 | 2921 | dpif_packet_delete(packet); |
9583bc14 EJ |
2922 | } |
2923 | ||
7bbdd84f SH |
2924 | static void |
2925 | compose_recirculate_action(struct xlate_ctx *ctx, | |
2926 | const struct ofpact *ofpacts_base, | |
2927 | const struct ofpact *ofpact_current, | |
2928 | size_t ofpacts_base_len) | |
2929 | { | |
2930 | uint32_t id; | |
2931 | int error; | |
2932 | unsigned ofpacts_len; | |
2933 | struct match match; | |
2934 | struct rule *rule; | |
2935 | struct ofpbuf ofpacts; | |
2936 | ||
2937 | ctx->exit = true; | |
2938 | ||
2939 | ofpacts_len = ofpacts_base_len - | |
2940 | ((uint8_t *)ofpact_current - (uint8_t *)ofpacts_base); | |
2941 | ||
2942 | if (ctx->rule) { | |
2943 | id = rule_dpif_get_recirc_id(ctx->rule); | |
2944 | } else { | |
2945 | /* In the case where ctx has no rule then allocate a recirc id. | |
2946 | * The life-cycle of this recirc id is managed by associating it | |
2947 | * with the internal rule that is created to to handle | |
2948 | * recirculation below. | |
2949 | * | |
2950 | * The known use-case of this is packet_out which | |
2951 | * translates actions without a rule */ | |
2952 | id = ofproto_dpif_alloc_recirc_id(ctx->xbridge->ofproto); | |
2953 | } | |
2954 | if (!id) { | |
2955 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
2956 | VLOG_ERR_RL(&rl, "Failed to allocate recirculation id"); | |
2957 | return; | |
2958 | } | |
2959 | ||
2960 | match_init_catchall(&match); | |
2961 | match_set_recirc_id(&match, id); | |
2962 | ofpbuf_use_const(&ofpacts, ofpact_current, ofpacts_len); | |
2963 | error = ofproto_dpif_add_internal_flow(ctx->xbridge->ofproto, &match, | |
2964 | RECIRC_RULE_PRIORITY, | |
2965 | RECIRC_TIMEOUT, &ofpacts, &rule); | |
2966 | if (error) { | |
2967 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
2968 | VLOG_ERR_RL(&rl, "Failed to add post recirculation flow %s", | |
2969 | match_to_string(&match, 0)); | |
2970 | return; | |
2971 | } | |
2972 | /* If ctx has no rule then associate the recirc id, which | |
2973 | * was allocated above, with the internal rule. This allows | |
2974 | * the recirc id to be released when the internal rule times out. */ | |
2975 | if (!ctx->rule) { | |
2976 | rule_set_recirc_id(rule, id); | |
2977 | } | |
2978 | ||
2979 | ctx->xout->slow |= commit_odp_actions(&ctx->xin->flow, &ctx->base_flow, | |
2980 | &ctx->xout->odp_actions, | |
2981 | &ctx->xout->wc); | |
2982 | nl_msg_put_u32(&ctx->xout->odp_actions, OVS_ACTION_ATTR_RECIRC, id); | |
2983 | } | |
2984 | ||
8bfd0fda BP |
2985 | static void |
2986 | compose_mpls_push_action(struct xlate_ctx *ctx, struct ofpact_push_mpls *mpls) | |
9583bc14 | 2987 | { |
33bf9176 BP |
2988 | struct flow_wildcards *wc = &ctx->xout->wc; |
2989 | struct flow *flow = &ctx->xin->flow; | |
8bfd0fda | 2990 | int n; |
33bf9176 | 2991 | |
8bfd0fda | 2992 | ovs_assert(eth_type_mpls(mpls->ethertype)); |
b0a17866 | 2993 | |
8bfd0fda BP |
2994 | n = flow_count_mpls_labels(flow, wc); |
2995 | if (!n) { | |
8bfd0fda BP |
2996 | ctx->xout->slow |= commit_odp_actions(flow, &ctx->base_flow, |
2997 | &ctx->xout->odp_actions, | |
2998 | &ctx->xout->wc); | |
2999 | } else if (n >= FLOW_MAX_MPLS_LABELS) { | |
3000 | if (ctx->xin->packet != NULL) { | |
3001 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
3002 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet on which an " | |
3003 | "MPLS push action can't be performed as it would " | |
3004 | "have more MPLS LSEs than the %d supported.", | |
3005 | ctx->xbridge->name, FLOW_MAX_MPLS_LABELS); | |
9583bc14 | 3006 | } |
8bfd0fda BP |
3007 | ctx->exit = true; |
3008 | return; | |
3009 | } else if (n >= ctx->xbridge->max_mpls_depth) { | |
3010 | COVERAGE_INC(xlate_actions_mpls_overflow); | |
3011 | ctx->xout->slow |= SLOW_ACTION; | |
9583bc14 | 3012 | } |
b0a17866 | 3013 | |
8bfd0fda | 3014 | flow_push_mpls(flow, n, mpls->ethertype, wc); |
9583bc14 EJ |
3015 | } |
3016 | ||
8bfd0fda | 3017 | static void |
9cfef3d0 | 3018 | compose_mpls_pop_action(struct xlate_ctx *ctx, ovs_be16 eth_type) |
9583bc14 | 3019 | { |
33bf9176 | 3020 | struct flow_wildcards *wc = &ctx->xout->wc; |
8bfd0fda BP |
3021 | struct flow *flow = &ctx->xin->flow; |
3022 | int n = flow_count_mpls_labels(flow, wc); | |
33bf9176 | 3023 | |
7bbdd84f SH |
3024 | if (flow_pop_mpls(flow, n, eth_type, wc)) { |
3025 | if (ctx->xbridge->enable_recirc && !eth_type_mpls(eth_type)) { | |
3026 | ctx->was_mpls = true; | |
3027 | } | |
3028 | } else if (n >= FLOW_MAX_MPLS_LABELS) { | |
8bfd0fda BP |
3029 | if (ctx->xin->packet != NULL) { |
3030 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
3031 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet on which an " | |
3032 | "MPLS pop action can't be performed as it has " | |
3033 | "more MPLS LSEs than the %d supported.", | |
3034 | ctx->xbridge->name, FLOW_MAX_MPLS_LABELS); | |
3035 | } | |
3036 | ctx->exit = true; | |
3037 | ofpbuf_clear(&ctx->xout->odp_actions); | |
9583bc14 EJ |
3038 | } |
3039 | } | |
3040 | ||
3041 | static bool | |
3042 | compose_dec_ttl(struct xlate_ctx *ctx, struct ofpact_cnt_ids *ids) | |
3043 | { | |
33bf9176 BP |
3044 | struct flow *flow = &ctx->xin->flow; |
3045 | ||
3046 | if (!is_ip_any(flow)) { | |
9583bc14 EJ |
3047 | return false; |
3048 | } | |
3049 | ||
1dd35f8a | 3050 | ctx->xout->wc.masks.nw_ttl = 0xff; |
33bf9176 BP |
3051 | if (flow->nw_ttl > 1) { |
3052 | flow->nw_ttl--; | |
9583bc14 EJ |
3053 | return false; |
3054 | } else { | |
3055 | size_t i; | |
3056 | ||
3057 | for (i = 0; i < ids->n_controllers; i++) { | |
3058 | execute_controller_action(ctx, UINT16_MAX, OFPR_INVALID_TTL, | |
3059 | ids->cnt_ids[i]); | |
3060 | } | |
3061 | ||
3062 | /* Stop processing for current table. */ | |
3063 | return true; | |
3064 | } | |
3065 | } | |
3066 | ||
8bfd0fda | 3067 | static void |
097d4939 JR |
3068 | compose_set_mpls_label_action(struct xlate_ctx *ctx, ovs_be32 label) |
3069 | { | |
8bfd0fda BP |
3070 | if (eth_type_mpls(ctx->xin->flow.dl_type)) { |
3071 | ctx->xout->wc.masks.mpls_lse[0] |= htonl(MPLS_LABEL_MASK); | |
3072 | set_mpls_lse_label(&ctx->xin->flow.mpls_lse[0], label); | |
097d4939 | 3073 | } |
097d4939 JR |
3074 | } |
3075 | ||
8bfd0fda | 3076 | static void |
097d4939 JR |
3077 | compose_set_mpls_tc_action(struct xlate_ctx *ctx, uint8_t tc) |
3078 | { | |
8bfd0fda BP |
3079 | if (eth_type_mpls(ctx->xin->flow.dl_type)) { |
3080 | ctx->xout->wc.masks.mpls_lse[0] |= htonl(MPLS_TC_MASK); | |
3081 | set_mpls_lse_tc(&ctx->xin->flow.mpls_lse[0], tc); | |
097d4939 | 3082 | } |
097d4939 JR |
3083 | } |
3084 | ||
8bfd0fda | 3085 | static void |
9cfef3d0 | 3086 | compose_set_mpls_ttl_action(struct xlate_ctx *ctx, uint8_t ttl) |
9583bc14 | 3087 | { |
8bfd0fda BP |
3088 | if (eth_type_mpls(ctx->xin->flow.dl_type)) { |
3089 | ctx->xout->wc.masks.mpls_lse[0] |= htonl(MPLS_TTL_MASK); | |
3090 | set_mpls_lse_ttl(&ctx->xin->flow.mpls_lse[0], ttl); | |
b0a17866 | 3091 | } |
9583bc14 EJ |
3092 | } |
3093 | ||
3094 | static bool | |
9cfef3d0 | 3095 | compose_dec_mpls_ttl_action(struct xlate_ctx *ctx) |
9583bc14 | 3096 | { |
33bf9176 | 3097 | struct flow *flow = &ctx->xin->flow; |
8bfd0fda | 3098 | uint8_t ttl = mpls_lse_to_ttl(flow->mpls_lse[0]); |
1dd35f8a JP |
3099 | struct flow_wildcards *wc = &ctx->xout->wc; |
3100 | ||
1dd35f8a | 3101 | memset(&wc->masks.mpls_lse, 0xff, sizeof wc->masks.mpls_lse); |
8bfd0fda BP |
3102 | if (eth_type_mpls(flow->dl_type)) { |
3103 | if (ttl > 1) { | |
3104 | ttl--; | |
3105 | set_mpls_lse_ttl(&flow->mpls_lse[0], ttl); | |
3106 | return false; | |
3107 | } else { | |
3108 | execute_controller_action(ctx, UINT16_MAX, OFPR_INVALID_TTL, 0); | |
9583bc14 | 3109 | |
8bfd0fda BP |
3110 | /* Stop processing for current table. */ |
3111 | return true; | |
3112 | } | |
9583bc14 | 3113 | } else { |
9583bc14 EJ |
3114 | return true; |
3115 | } | |
3116 | } | |
3117 | ||
3118 | static void | |
3119 | xlate_output_action(struct xlate_ctx *ctx, | |
4e022ec0 | 3120 | ofp_port_t port, uint16_t max_len, bool may_packet_in) |
9583bc14 | 3121 | { |
4e022ec0 | 3122 | ofp_port_t prev_nf_output_iface = ctx->xout->nf_output_iface; |
9583bc14 EJ |
3123 | |
3124 | ctx->xout->nf_output_iface = NF_OUT_DROP; | |
3125 | ||
3126 | switch (port) { | |
3127 | case OFPP_IN_PORT: | |
4e022ec0 | 3128 | compose_output_action(ctx, ctx->xin->flow.in_port.ofp_port); |
9583bc14 EJ |
3129 | break; |
3130 | case OFPP_TABLE: | |
4e022ec0 | 3131 | xlate_table_action(ctx, ctx->xin->flow.in_port.ofp_port, |
6d328fa2 | 3132 | 0, may_packet_in, true); |
9583bc14 EJ |
3133 | break; |
3134 | case OFPP_NORMAL: | |
3135 | xlate_normal(ctx); | |
3136 | break; | |
3137 | case OFPP_FLOOD: | |
3138 | flood_packets(ctx, false); | |
3139 | break; | |
3140 | case OFPP_ALL: | |
3141 | flood_packets(ctx, true); | |
3142 | break; | |
3143 | case OFPP_CONTROLLER: | |
3144 | execute_controller_action(ctx, max_len, OFPR_ACTION, 0); | |
3145 | break; | |
3146 | case OFPP_NONE: | |
3147 | break; | |
3148 | case OFPP_LOCAL: | |
3149 | default: | |
4e022ec0 | 3150 | if (port != ctx->xin->flow.in_port.ofp_port) { |
9583bc14 EJ |
3151 | compose_output_action(ctx, port); |
3152 | } else { | |
3153 | xlate_report(ctx, "skipping output to input port"); | |
3154 | } | |
3155 | break; | |
3156 | } | |
3157 | ||
3158 | if (prev_nf_output_iface == NF_OUT_FLOOD) { | |
3159 | ctx->xout->nf_output_iface = NF_OUT_FLOOD; | |
3160 | } else if (ctx->xout->nf_output_iface == NF_OUT_DROP) { | |
3161 | ctx->xout->nf_output_iface = prev_nf_output_iface; | |
3162 | } else if (prev_nf_output_iface != NF_OUT_DROP && | |
3163 | ctx->xout->nf_output_iface != NF_OUT_FLOOD) { | |
3164 | ctx->xout->nf_output_iface = NF_OUT_MULTI; | |
3165 | } | |
3166 | } | |
3167 | ||
3168 | static void | |
3169 | xlate_output_reg_action(struct xlate_ctx *ctx, | |
3170 | const struct ofpact_output_reg *or) | |
3171 | { | |
3172 | uint64_t port = mf_get_subfield(&or->src, &ctx->xin->flow); | |
3173 | if (port <= UINT16_MAX) { | |
3174 | union mf_subvalue value; | |
3175 | ||
3176 | memset(&value, 0xff, sizeof value); | |
3177 | mf_write_subfield_flow(&or->src, &value, &ctx->xout->wc.masks); | |
4e022ec0 AW |
3178 | xlate_output_action(ctx, u16_to_ofp(port), |
3179 | or->max_len, false); | |
9583bc14 EJ |
3180 | } |
3181 | } | |
3182 | ||
3183 | static void | |
3184 | xlate_enqueue_action(struct xlate_ctx *ctx, | |
3185 | const struct ofpact_enqueue *enqueue) | |
3186 | { | |
4e022ec0 | 3187 | ofp_port_t ofp_port = enqueue->port; |
9583bc14 EJ |
3188 | uint32_t queue_id = enqueue->queue; |
3189 | uint32_t flow_priority, priority; | |
3190 | int error; | |
3191 | ||
3192 | /* Translate queue to priority. */ | |
89a8a7f0 | 3193 | error = dpif_queue_to_priority(ctx->xbridge->dpif, queue_id, &priority); |
9583bc14 EJ |
3194 | if (error) { |
3195 | /* Fall back to ordinary output action. */ | |
3196 | xlate_output_action(ctx, enqueue->port, 0, false); | |
3197 | return; | |
3198 | } | |
3199 | ||
3200 | /* Check output port. */ | |
3201 | if (ofp_port == OFPP_IN_PORT) { | |
4e022ec0 AW |
3202 | ofp_port = ctx->xin->flow.in_port.ofp_port; |
3203 | } else if (ofp_port == ctx->xin->flow.in_port.ofp_port) { | |
9583bc14 EJ |
3204 | return; |
3205 | } | |
3206 | ||
3207 | /* Add datapath actions. */ | |
3208 | flow_priority = ctx->xin->flow.skb_priority; | |
3209 | ctx->xin->flow.skb_priority = priority; | |
3210 | compose_output_action(ctx, ofp_port); | |
3211 | ctx->xin->flow.skb_priority = flow_priority; | |
3212 | ||
3213 | /* Update NetFlow output port. */ | |
3214 | if (ctx->xout->nf_output_iface == NF_OUT_DROP) { | |
3215 | ctx->xout->nf_output_iface = ofp_port; | |
3216 | } else if (ctx->xout->nf_output_iface != NF_OUT_FLOOD) { | |
3217 | ctx->xout->nf_output_iface = NF_OUT_MULTI; | |
3218 | } | |
3219 | } | |
3220 | ||
3221 | static void | |
3222 | xlate_set_queue_action(struct xlate_ctx *ctx, uint32_t queue_id) | |
3223 | { | |
3224 | uint32_t skb_priority; | |
3225 | ||
89a8a7f0 | 3226 | if (!dpif_queue_to_priority(ctx->xbridge->dpif, queue_id, &skb_priority)) { |
9583bc14 EJ |
3227 | ctx->xin->flow.skb_priority = skb_priority; |
3228 | } else { | |
3229 | /* Couldn't translate queue to a priority. Nothing to do. A warning | |
3230 | * has already been logged. */ | |
3231 | } | |
3232 | } | |
3233 | ||
3234 | static bool | |
46c88433 | 3235 | slave_enabled_cb(ofp_port_t ofp_port, void *xbridge_) |
9583bc14 | 3236 | { |
46c88433 EJ |
3237 | const struct xbridge *xbridge = xbridge_; |
3238 | struct xport *port; | |
9583bc14 EJ |
3239 | |
3240 | switch (ofp_port) { | |
3241 | case OFPP_IN_PORT: | |
3242 | case OFPP_TABLE: | |
3243 | case OFPP_NORMAL: | |
3244 | case OFPP_FLOOD: | |
3245 | case OFPP_ALL: | |
3246 | case OFPP_NONE: | |
3247 | return true; | |
3248 | case OFPP_CONTROLLER: /* Not supported by the bundle action. */ | |
3249 | return false; | |
3250 | default: | |
46c88433 | 3251 | port = get_ofp_port(xbridge, ofp_port); |
9583bc14 EJ |
3252 | return port ? port->may_enable : false; |
3253 | } | |
3254 | } | |
3255 | ||
3256 | static void | |
3257 | xlate_bundle_action(struct xlate_ctx *ctx, | |
3258 | const struct ofpact_bundle *bundle) | |
3259 | { | |
4e022ec0 | 3260 | ofp_port_t port; |
9583bc14 EJ |
3261 | |
3262 | port = bundle_execute(bundle, &ctx->xin->flow, &ctx->xout->wc, | |
46c88433 EJ |
3263 | slave_enabled_cb, |
3264 | CONST_CAST(struct xbridge *, ctx->xbridge)); | |
9583bc14 | 3265 | if (bundle->dst.field) { |
f74e7df7 JP |
3266 | nxm_reg_load(&bundle->dst, ofp_to_u16(port), &ctx->xin->flow, |
3267 | &ctx->xout->wc); | |
9583bc14 EJ |
3268 | } else { |
3269 | xlate_output_action(ctx, port, 0, false); | |
3270 | } | |
3271 | } | |
3272 | ||
3273 | static void | |
4165b5e0 JS |
3274 | xlate_learn_action__(struct xlate_ctx *ctx, const struct ofpact_learn *learn, |
3275 | struct ofputil_flow_mod *fm, struct ofpbuf *ofpacts) | |
9583bc14 | 3276 | { |
4165b5e0 JS |
3277 | learn_execute(learn, &ctx->xin->flow, fm, ofpacts); |
3278 | if (ctx->xin->may_learn) { | |
3279 | ofproto_dpif_flow_mod(ctx->xbridge->ofproto, fm); | |
3280 | } | |
3281 | } | |
9583bc14 | 3282 | |
4165b5e0 JS |
3283 | static void |
3284 | xlate_learn_action(struct xlate_ctx *ctx, const struct ofpact_learn *learn) | |
3285 | { | |
9583bc14 | 3286 | ctx->xout->has_learn = true; |
9583bc14 EJ |
3287 | learn_mask(learn, &ctx->xout->wc); |
3288 | ||
b256dc52 JS |
3289 | if (ctx->xin->xcache) { |
3290 | struct xc_entry *entry; | |
3291 | ||
3292 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_LEARN); | |
4165b5e0 JS |
3293 | entry->u.learn.ofproto = ctx->xbridge->ofproto; |
3294 | entry->u.learn.fm = xmalloc(sizeof *entry->u.learn.fm); | |
3295 | entry->u.learn.ofpacts = ofpbuf_new(64); | |
3296 | xlate_learn_action__(ctx, learn, entry->u.learn.fm, | |
3297 | entry->u.learn.ofpacts); | |
3298 | } else if (ctx->xin->may_learn) { | |
3299 | uint64_t ofpacts_stub[1024 / 8]; | |
3300 | struct ofputil_flow_mod fm; | |
3301 | struct ofpbuf ofpacts; | |
3302 | ||
3303 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); | |
3304 | xlate_learn_action__(ctx, learn, &fm, &ofpacts); | |
3305 | ofpbuf_uninit(&ofpacts); | |
b256dc52 JS |
3306 | } |
3307 | } | |
3308 | ||
3309 | static void | |
3310 | xlate_fin_timeout__(struct rule_dpif *rule, uint16_t tcp_flags, | |
3311 | uint16_t idle_timeout, uint16_t hard_timeout) | |
3312 | { | |
3313 | if (tcp_flags & (TCP_FIN | TCP_RST)) { | |
3314 | rule_dpif_reduce_timeouts(rule, idle_timeout, hard_timeout); | |
3315 | } | |
9583bc14 EJ |
3316 | } |
3317 | ||
9583bc14 EJ |
3318 | static void |
3319 | xlate_fin_timeout(struct xlate_ctx *ctx, | |
3320 | const struct ofpact_fin_timeout *oft) | |
3321 | { | |
b256dc52 JS |
3322 | if (ctx->rule) { |
3323 | xlate_fin_timeout__(ctx->rule, ctx->xin->tcp_flags, | |
3324 | oft->fin_idle_timeout, oft->fin_hard_timeout); | |
3325 | if (ctx->xin->xcache) { | |
3326 | struct xc_entry *entry; | |
3327 | ||
3328 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_FIN_TIMEOUT); | |
83709dfa JR |
3329 | /* XC_RULE already holds a reference on the rule, none is taken |
3330 | * here. */ | |
b256dc52 JS |
3331 | entry->u.fin.rule = ctx->rule; |
3332 | entry->u.fin.idle = oft->fin_idle_timeout; | |
3333 | entry->u.fin.hard = oft->fin_hard_timeout; | |
b256dc52 | 3334 | } |
9583bc14 EJ |
3335 | } |
3336 | } | |
3337 | ||
3338 | static void | |
3339 | xlate_sample_action(struct xlate_ctx *ctx, | |
3340 | const struct ofpact_sample *os) | |
3341 | { | |
3342 | union user_action_cookie cookie; | |
3343 | /* Scale the probability from 16-bit to 32-bit while representing | |
3344 | * the same percentage. */ | |
3345 | uint32_t probability = (os->probability << 16) | os->probability; | |
3346 | ||
4b97b70d BP |
3347 | if (!ctx->xbridge->variable_length_userdata) { |
3348 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); | |
3349 | ||
3350 | VLOG_ERR_RL(&rl, "ignoring NXAST_SAMPLE action because datapath " | |
3351 | "lacks support (needs Linux 3.10+ or kernel module from " | |
3352 | "OVS 1.11+)"); | |
3353 | return; | |
3354 | } | |
3355 | ||
7fd91025 BP |
3356 | ctx->xout->slow |= commit_odp_actions(&ctx->xin->flow, &ctx->base_flow, |
3357 | &ctx->xout->odp_actions, | |
8bfd0fda | 3358 | &ctx->xout->wc); |
9583bc14 EJ |
3359 | |
3360 | compose_flow_sample_cookie(os->probability, os->collector_set_id, | |
3361 | os->obs_domain_id, os->obs_point_id, &cookie); | |
46c88433 | 3362 | compose_sample_action(ctx->xbridge, &ctx->xout->odp_actions, &ctx->xin->flow, |
9583bc14 EJ |
3363 | probability, &cookie, sizeof cookie.flow_sample); |
3364 | } | |
3365 | ||
3366 | static bool | |
46c88433 | 3367 | may_receive(const struct xport *xport, struct xlate_ctx *ctx) |
9583bc14 | 3368 | { |
bbbca389 | 3369 | if (xport->config & (is_stp(&ctx->xin->flow) |
46c88433 EJ |
3370 | ? OFPUTIL_PC_NO_RECV_STP |
3371 | : OFPUTIL_PC_NO_RECV)) { | |
9583bc14 EJ |
3372 | return false; |
3373 | } | |
3374 | ||
3375 | /* Only drop packets here if both forwarding and learning are | |
3376 | * disabled. If just learning is enabled, we need to have | |
3377 | * OFPP_NORMAL and the learning action have a look at the packet | |
3378 | * before we can drop it. */ | |
9d189a50 | 3379 | if (!xport_stp_forward_state(xport) && !xport_stp_learn_state(xport)) { |
9583bc14 EJ |
3380 | return false; |
3381 | } | |
3382 | ||
3383 | return true; | |
3384 | } | |
3385 | ||
7fdb60a7 SH |
3386 | static void |
3387 | xlate_write_actions(struct xlate_ctx *ctx, const struct ofpact *a) | |
3388 | { | |
3389 | struct ofpact_nest *on = ofpact_get_WRITE_ACTIONS(a); | |
3390 | ofpbuf_put(&ctx->action_set, on->actions, ofpact_nest_get_action_len(on)); | |
3391 | ofpact_pad(&ctx->action_set); | |
3392 | } | |
3393 | ||
3394 | static void | |
3395 | xlate_action_set(struct xlate_ctx *ctx) | |
3396 | { | |
3397 | uint64_t action_list_stub[1024 / 64]; | |
3398 | struct ofpbuf action_list; | |
3399 | ||
3400 | ofpbuf_use_stub(&action_list, action_list_stub, sizeof action_list_stub); | |
3401 | ofpacts_execute_action_set(&action_list, &ctx->action_set); | |
1f317cb5 | 3402 | do_xlate_actions(ofpbuf_data(&action_list), ofpbuf_size(&action_list), ctx); |
7fdb60a7 SH |
3403 | ofpbuf_uninit(&action_list); |
3404 | } | |
3405 | ||
7bbdd84f SH |
3406 | static bool |
3407 | ofpact_needs_recirculation_after_mpls(const struct xlate_ctx *ctx, | |
3408 | const struct ofpact *a) | |
3409 | { | |
3410 | struct flow_wildcards *wc = &ctx->xout->wc; | |
3411 | struct flow *flow = &ctx->xin->flow; | |
3412 | ||
3413 | switch (a->type) { | |
3414 | case OFPACT_OUTPUT: | |
3415 | case OFPACT_GROUP: | |
3416 | case OFPACT_CONTROLLER: | |
3417 | case OFPACT_STRIP_VLAN: | |
3418 | case OFPACT_SET_VLAN_PCP: | |
3419 | case OFPACT_SET_VLAN_VID: | |
3420 | case OFPACT_ENQUEUE: | |
3421 | case OFPACT_PUSH_VLAN: | |
3422 | case OFPACT_SET_ETH_SRC: | |
3423 | case OFPACT_SET_ETH_DST: | |
3424 | case OFPACT_SET_TUNNEL: | |
3425 | case OFPACT_SET_QUEUE: | |
3426 | case OFPACT_POP_QUEUE: | |
3427 | case OFPACT_POP_MPLS: | |
3428 | case OFPACT_DEC_MPLS_TTL: | |
3429 | case OFPACT_SET_MPLS_TTL: | |
3430 | case OFPACT_SET_MPLS_TC: | |
3431 | case OFPACT_SET_MPLS_LABEL: | |
3432 | case OFPACT_NOTE: | |
3433 | case OFPACT_OUTPUT_REG: | |
3434 | case OFPACT_EXIT: | |
3435 | case OFPACT_METER: | |
3436 | case OFPACT_WRITE_METADATA: | |
3437 | case OFPACT_WRITE_ACTIONS: | |
3438 | case OFPACT_CLEAR_ACTIONS: | |
3439 | case OFPACT_SAMPLE: | |
3440 | return false; | |
3441 | ||
3442 | case OFPACT_SET_IPV4_SRC: | |
3443 | case OFPACT_SET_IPV4_DST: | |
3444 | case OFPACT_SET_IP_DSCP: | |
3445 | case OFPACT_SET_IP_ECN: | |
3446 | case OFPACT_SET_IP_TTL: | |
3447 | case OFPACT_SET_L4_SRC_PORT: | |
3448 | case OFPACT_SET_L4_DST_PORT: | |
3449 | case OFPACT_RESUBMIT: | |
3450 | case OFPACT_STACK_PUSH: | |
3451 | case OFPACT_STACK_POP: | |
3452 | case OFPACT_DEC_TTL: | |
3453 | case OFPACT_MULTIPATH: | |
3454 | case OFPACT_BUNDLE: | |
3455 | case OFPACT_LEARN: | |
3456 | case OFPACT_FIN_TIMEOUT: | |
3457 | case OFPACT_GOTO_TABLE: | |
3458 | return true; | |
3459 | ||
3460 | case OFPACT_REG_MOVE: | |
3461 | return (mf_is_l3_or_higher(ofpact_get_REG_MOVE(a)->dst.field) || | |
3462 | mf_is_l3_or_higher(ofpact_get_REG_MOVE(a)->src.field)); | |
3463 | ||
3464 | case OFPACT_REG_LOAD: | |
3465 | return mf_is_l3_or_higher(ofpact_get_REG_LOAD(a)->dst.field); | |
3466 | ||
3467 | case OFPACT_SET_FIELD: | |
3468 | return mf_is_l3_or_higher(ofpact_get_SET_FIELD(a)->field); | |
3469 | ||
3470 | case OFPACT_PUSH_MPLS: | |
3471 | /* Recirculate if it is an IP packet with a zero ttl. This may | |
3472 | * indicate that the packet was previously MPLS and an MPLS pop action | |
3473 | * converted it to IP. In this case recirculating should reveal the IP | |
3474 | * TTL which is used as the basis for a new MPLS LSE. */ | |
3475 | return (!flow_count_mpls_labels(flow, wc) | |
3476 | && flow->nw_ttl == 0 | |
3477 | && is_ip_any(flow)); | |
3478 | } | |
3479 | ||
3480 | OVS_NOT_REACHED(); | |
3481 | } | |
3482 | ||
9583bc14 EJ |
3483 | static void |
3484 | do_xlate_actions(const struct ofpact *ofpacts, size_t ofpacts_len, | |
3485 | struct xlate_ctx *ctx) | |
3486 | { | |
33bf9176 BP |
3487 | struct flow_wildcards *wc = &ctx->xout->wc; |
3488 | struct flow *flow = &ctx->xin->flow; | |
9583bc14 EJ |
3489 | const struct ofpact *a; |
3490 | ||
f47ea021 JR |
3491 | /* dl_type already in the mask, not set below. */ |
3492 | ||
9583bc14 EJ |
3493 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { |
3494 | struct ofpact_controller *controller; | |
3495 | const struct ofpact_metadata *metadata; | |
b2dd70be JR |
3496 | const struct ofpact_set_field *set_field; |
3497 | const struct mf_field *mf; | |
9583bc14 EJ |
3498 | |
3499 | if (ctx->exit) { | |
3500 | break; | |
3501 | } | |
3502 | ||
7bbdd84f SH |
3503 | if (ctx->was_mpls && ofpact_needs_recirculation_after_mpls(ctx, a)) { |
3504 | compose_recirculate_action(ctx, ofpacts, a, ofpacts_len); | |
3505 | return; | |
3506 | } | |
3507 | ||
9583bc14 EJ |
3508 | switch (a->type) { |
3509 | case OFPACT_OUTPUT: | |
3510 | xlate_output_action(ctx, ofpact_get_OUTPUT(a)->port, | |
3511 | ofpact_get_OUTPUT(a)->max_len, true); | |
3512 | break; | |
3513 | ||
7395c052 | 3514 | case OFPACT_GROUP: |
f4fb341b SH |
3515 | if (xlate_group_action(ctx, ofpact_get_GROUP(a)->group_id)) { |
3516 | return; | |
3517 | } | |
7395c052 NZ |
3518 | break; |
3519 | ||
9583bc14 EJ |
3520 | case OFPACT_CONTROLLER: |
3521 | controller = ofpact_get_CONTROLLER(a); | |
3522 | execute_controller_action(ctx, controller->max_len, | |
3523 | controller->reason, | |
3524 | controller->controller_id); | |
3525 | break; | |
3526 | ||
3527 | case OFPACT_ENQUEUE: | |
3528 | xlate_enqueue_action(ctx, ofpact_get_ENQUEUE(a)); | |
3529 | break; | |
3530 | ||
3531 | case OFPACT_SET_VLAN_VID: | |
f74e7df7 | 3532 | wc->masks.vlan_tci |= htons(VLAN_VID_MASK | VLAN_CFI); |
ca287d20 JR |
3533 | if (flow->vlan_tci & htons(VLAN_CFI) || |
3534 | ofpact_get_SET_VLAN_VID(a)->push_vlan_if_needed) { | |
3535 | flow->vlan_tci &= ~htons(VLAN_VID_MASK); | |
3536 | flow->vlan_tci |= (htons(ofpact_get_SET_VLAN_VID(a)->vlan_vid) | |
3537 | | htons(VLAN_CFI)); | |
3538 | } | |
9583bc14 EJ |
3539 | break; |
3540 | ||
3541 | case OFPACT_SET_VLAN_PCP: | |
f74e7df7 | 3542 | wc->masks.vlan_tci |= htons(VLAN_PCP_MASK | VLAN_CFI); |
ca287d20 JR |
3543 | if (flow->vlan_tci & htons(VLAN_CFI) || |
3544 | ofpact_get_SET_VLAN_PCP(a)->push_vlan_if_needed) { | |
3545 | flow->vlan_tci &= ~htons(VLAN_PCP_MASK); | |
3546 | flow->vlan_tci |= htons((ofpact_get_SET_VLAN_PCP(a)->vlan_pcp | |
3547 | << VLAN_PCP_SHIFT) | VLAN_CFI); | |
3548 | } | |
9583bc14 EJ |
3549 | break; |
3550 | ||
3551 | case OFPACT_STRIP_VLAN: | |
f74e7df7 | 3552 | memset(&wc->masks.vlan_tci, 0xff, sizeof wc->masks.vlan_tci); |
33bf9176 | 3553 | flow->vlan_tci = htons(0); |
9583bc14 EJ |
3554 | break; |
3555 | ||
3556 | case OFPACT_PUSH_VLAN: | |
3557 | /* XXX 802.1AD(QinQ) */ | |
f74e7df7 | 3558 | memset(&wc->masks.vlan_tci, 0xff, sizeof wc->masks.vlan_tci); |
33bf9176 | 3559 | flow->vlan_tci = htons(VLAN_CFI); |
9583bc14 EJ |
3560 | break; |
3561 | ||
3562 | case OFPACT_SET_ETH_SRC: | |
f74e7df7 | 3563 | memset(&wc->masks.dl_src, 0xff, sizeof wc->masks.dl_src); |
33bf9176 | 3564 | memcpy(flow->dl_src, ofpact_get_SET_ETH_SRC(a)->mac, ETH_ADDR_LEN); |
9583bc14 EJ |
3565 | break; |
3566 | ||
3567 | case OFPACT_SET_ETH_DST: | |
f74e7df7 | 3568 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); |
33bf9176 | 3569 | memcpy(flow->dl_dst, ofpact_get_SET_ETH_DST(a)->mac, ETH_ADDR_LEN); |
9583bc14 EJ |
3570 | break; |
3571 | ||
3572 | case OFPACT_SET_IPV4_SRC: | |
33bf9176 | 3573 | if (flow->dl_type == htons(ETH_TYPE_IP)) { |
f47ea021 | 3574 | memset(&wc->masks.nw_src, 0xff, sizeof wc->masks.nw_src); |
33bf9176 | 3575 | flow->nw_src = ofpact_get_SET_IPV4_SRC(a)->ipv4; |
9583bc14 EJ |
3576 | } |
3577 | break; | |
3578 | ||
3579 | case OFPACT_SET_IPV4_DST: | |
33bf9176 | 3580 | if (flow->dl_type == htons(ETH_TYPE_IP)) { |
f47ea021 | 3581 | memset(&wc->masks.nw_dst, 0xff, sizeof wc->masks.nw_dst); |
33bf9176 | 3582 | flow->nw_dst = ofpact_get_SET_IPV4_DST(a)->ipv4; |
9583bc14 EJ |
3583 | } |
3584 | break; | |
3585 | ||
04f01c24 BP |
3586 | case OFPACT_SET_IP_DSCP: |
3587 | if (is_ip_any(flow)) { | |
f47ea021 | 3588 | wc->masks.nw_tos |= IP_DSCP_MASK; |
33bf9176 | 3589 | flow->nw_tos &= ~IP_DSCP_MASK; |
04f01c24 | 3590 | flow->nw_tos |= ofpact_get_SET_IP_DSCP(a)->dscp; |
9583bc14 EJ |
3591 | } |
3592 | break; | |
3593 | ||
ff14eb7a JR |
3594 | case OFPACT_SET_IP_ECN: |
3595 | if (is_ip_any(flow)) { | |
3596 | wc->masks.nw_tos |= IP_ECN_MASK; | |
3597 | flow->nw_tos &= ~IP_ECN_MASK; | |
3598 | flow->nw_tos |= ofpact_get_SET_IP_ECN(a)->ecn; | |
3599 | } | |
3600 | break; | |
3601 | ||
0c20dbe4 JR |
3602 | case OFPACT_SET_IP_TTL: |
3603 | if (is_ip_any(flow)) { | |
3604 | wc->masks.nw_ttl = 0xff; | |
3605 | flow->nw_ttl = ofpact_get_SET_IP_TTL(a)->ttl; | |
3606 | } | |
3607 | break; | |
3608 | ||
9583bc14 | 3609 | case OFPACT_SET_L4_SRC_PORT: |
33bf9176 | 3610 | if (is_ip_any(flow)) { |
f47ea021 JR |
3611 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); |
3612 | memset(&wc->masks.tp_src, 0xff, sizeof wc->masks.tp_src); | |
33bf9176 | 3613 | flow->tp_src = htons(ofpact_get_SET_L4_SRC_PORT(a)->port); |
9583bc14 EJ |
3614 | } |
3615 | break; | |
3616 | ||
3617 | case OFPACT_SET_L4_DST_PORT: | |
33bf9176 | 3618 | if (is_ip_any(flow)) { |
f47ea021 JR |
3619 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); |
3620 | memset(&wc->masks.tp_dst, 0xff, sizeof wc->masks.tp_dst); | |
33bf9176 | 3621 | flow->tp_dst = htons(ofpact_get_SET_L4_DST_PORT(a)->port); |
9583bc14 EJ |
3622 | } |
3623 | break; | |
3624 | ||
3625 | case OFPACT_RESUBMIT: | |
3626 | xlate_ofpact_resubmit(ctx, ofpact_get_RESUBMIT(a)); | |
3627 | break; | |
3628 | ||
3629 | case OFPACT_SET_TUNNEL: | |
33bf9176 | 3630 | flow->tunnel.tun_id = htonll(ofpact_get_SET_TUNNEL(a)->tun_id); |
9583bc14 EJ |
3631 | break; |
3632 | ||
3633 | case OFPACT_SET_QUEUE: | |
3634 | xlate_set_queue_action(ctx, ofpact_get_SET_QUEUE(a)->queue_id); | |
3635 | break; | |
3636 | ||
3637 | case OFPACT_POP_QUEUE: | |
33bf9176 | 3638 | flow->skb_priority = ctx->orig_skb_priority; |
9583bc14 EJ |
3639 | break; |
3640 | ||
3641 | case OFPACT_REG_MOVE: | |
33bf9176 | 3642 | nxm_execute_reg_move(ofpact_get_REG_MOVE(a), flow, wc); |
9583bc14 EJ |
3643 | break; |
3644 | ||
3645 | case OFPACT_REG_LOAD: | |
f47ea021 | 3646 | nxm_execute_reg_load(ofpact_get_REG_LOAD(a), flow, wc); |
9583bc14 EJ |
3647 | break; |
3648 | ||
b2dd70be JR |
3649 | case OFPACT_SET_FIELD: |
3650 | set_field = ofpact_get_SET_FIELD(a); | |
3651 | mf = set_field->field; | |
b2dd70be JR |
3652 | |
3653 | /* Set field action only ever overwrites packet's outermost | |
3654 | * applicable header fields. Do nothing if no header exists. */ | |
4479846e JR |
3655 | if (mf->id == MFF_VLAN_VID) { |
3656 | wc->masks.vlan_tci |= htons(VLAN_CFI); | |
3657 | if (!(flow->vlan_tci & htons(VLAN_CFI))) { | |
3658 | break; | |
3659 | } | |
3660 | } else if ((mf->id == MFF_MPLS_LABEL || mf->id == MFF_MPLS_TC) | |
3661 | /* 'dl_type' is already unwildcarded. */ | |
3662 | && !eth_type_mpls(flow->dl_type)) { | |
3663 | break; | |
b2dd70be | 3664 | } |
4479846e JR |
3665 | |
3666 | mf_mask_field_and_prereqs(mf, &wc->masks); | |
3667 | mf_set_flow_value(mf, &set_field->value, flow); | |
b2dd70be JR |
3668 | break; |
3669 | ||
9583bc14 | 3670 | case OFPACT_STACK_PUSH: |
33bf9176 BP |
3671 | nxm_execute_stack_push(ofpact_get_STACK_PUSH(a), flow, wc, |
3672 | &ctx->stack); | |
9583bc14 EJ |
3673 | break; |
3674 | ||
3675 | case OFPACT_STACK_POP: | |
f74e7df7 JP |
3676 | nxm_execute_stack_pop(ofpact_get_STACK_POP(a), flow, wc, |
3677 | &ctx->stack); | |
9583bc14 EJ |
3678 | break; |
3679 | ||
3680 | case OFPACT_PUSH_MPLS: | |
8bfd0fda | 3681 | compose_mpls_push_action(ctx, ofpact_get_PUSH_MPLS(a)); |
9583bc14 EJ |
3682 | break; |
3683 | ||
3684 | case OFPACT_POP_MPLS: | |
8bfd0fda | 3685 | compose_mpls_pop_action(ctx, ofpact_get_POP_MPLS(a)->ethertype); |
9583bc14 EJ |
3686 | break; |
3687 | ||
097d4939 | 3688 | case OFPACT_SET_MPLS_LABEL: |
8bfd0fda BP |
3689 | compose_set_mpls_label_action( |
3690 | ctx, ofpact_get_SET_MPLS_LABEL(a)->label); | |
3691 | break; | |
097d4939 JR |
3692 | |
3693 | case OFPACT_SET_MPLS_TC: | |
8bfd0fda | 3694 | compose_set_mpls_tc_action(ctx, ofpact_get_SET_MPLS_TC(a)->tc); |
097d4939 JR |
3695 | break; |
3696 | ||
9583bc14 | 3697 | case OFPACT_SET_MPLS_TTL: |
8bfd0fda | 3698 | compose_set_mpls_ttl_action(ctx, ofpact_get_SET_MPLS_TTL(a)->ttl); |
9583bc14 EJ |
3699 | break; |
3700 | ||
3701 | case OFPACT_DEC_MPLS_TTL: | |
9cfef3d0 | 3702 | if (compose_dec_mpls_ttl_action(ctx)) { |
ad3efdcb | 3703 | return; |
9583bc14 EJ |
3704 | } |
3705 | break; | |
3706 | ||
3707 | case OFPACT_DEC_TTL: | |
f74e7df7 | 3708 | wc->masks.nw_ttl = 0xff; |
9583bc14 | 3709 | if (compose_dec_ttl(ctx, ofpact_get_DEC_TTL(a))) { |
ad3efdcb | 3710 | return; |
9583bc14 EJ |
3711 | } |
3712 | break; | |
3713 | ||
3714 | case OFPACT_NOTE: | |
3715 | /* Nothing to do. */ | |
3716 | break; | |
3717 | ||
3718 | case OFPACT_MULTIPATH: | |
33bf9176 | 3719 | multipath_execute(ofpact_get_MULTIPATH(a), flow, wc); |
9583bc14 EJ |
3720 | break; |
3721 | ||
3722 | case OFPACT_BUNDLE: | |
9583bc14 EJ |
3723 | xlate_bundle_action(ctx, ofpact_get_BUNDLE(a)); |
3724 | break; | |
3725 | ||
3726 | case OFPACT_OUTPUT_REG: | |
3727 | xlate_output_reg_action(ctx, ofpact_get_OUTPUT_REG(a)); | |
3728 | break; | |
3729 | ||
3730 | case OFPACT_LEARN: | |
3731 | xlate_learn_action(ctx, ofpact_get_LEARN(a)); | |
3732 | break; | |
3733 | ||
3734 | case OFPACT_EXIT: | |
3735 | ctx->exit = true; | |
3736 | break; | |
3737 | ||
3738 | case OFPACT_FIN_TIMEOUT: | |
33bf9176 | 3739 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); |
9583bc14 EJ |
3740 | ctx->xout->has_fin_timeout = true; |
3741 | xlate_fin_timeout(ctx, ofpact_get_FIN_TIMEOUT(a)); | |
3742 | break; | |
3743 | ||
3744 | case OFPACT_CLEAR_ACTIONS: | |
7fdb60a7 SH |
3745 | ofpbuf_clear(&ctx->action_set); |
3746 | break; | |
3747 | ||
3748 | case OFPACT_WRITE_ACTIONS: | |
3749 | xlate_write_actions(ctx, a); | |
9583bc14 EJ |
3750 | break; |
3751 | ||
3752 | case OFPACT_WRITE_METADATA: | |
3753 | metadata = ofpact_get_WRITE_METADATA(a); | |
33bf9176 BP |
3754 | flow->metadata &= ~metadata->mask; |
3755 | flow->metadata |= metadata->metadata & metadata->mask; | |
9583bc14 EJ |
3756 | break; |
3757 | ||
638a19b0 JR |
3758 | case OFPACT_METER: |
3759 | /* Not implemented yet. */ | |
3760 | break; | |
3761 | ||
9583bc14 | 3762 | case OFPACT_GOTO_TABLE: { |
9583bc14 | 3763 | struct ofpact_goto_table *ogt = ofpact_get_GOTO_TABLE(a); |
9583bc14 | 3764 | |
7bbdd84f SH |
3765 | /* Allow ctx->table_id == TBL_INTERNAL, which will be greater |
3766 | * than ogt->table_id. This is to allow goto_table actions that | |
3767 | * triggered recirculation: ctx->table_id will be TBL_INTERNAL | |
3768 | * after recirculation. */ | |
3769 | ovs_assert(ctx->table_id == TBL_INTERNAL | |
3770 | || ctx->table_id < ogt->table_id); | |
4468099e | 3771 | xlate_table_action(ctx, ctx->xin->flow.in_port.ofp_port, |
6d328fa2 | 3772 | ogt->table_id, true, true); |
9583bc14 EJ |
3773 | break; |
3774 | } | |
3775 | ||
3776 | case OFPACT_SAMPLE: | |
3777 | xlate_sample_action(ctx, ofpact_get_SAMPLE(a)); | |
3778 | break; | |
3779 | } | |
3780 | } | |
9583bc14 EJ |
3781 | } |
3782 | ||
3783 | void | |
3784 | xlate_in_init(struct xlate_in *xin, struct ofproto_dpif *ofproto, | |
3785 | const struct flow *flow, struct rule_dpif *rule, | |
a66733a8 | 3786 | uint16_t tcp_flags, const struct ofpbuf *packet) |
9583bc14 EJ |
3787 | { |
3788 | xin->ofproto = ofproto; | |
3789 | xin->flow = *flow; | |
3790 | xin->packet = packet; | |
3791 | xin->may_learn = packet != NULL; | |
3792 | xin->rule = rule; | |
b256dc52 | 3793 | xin->xcache = NULL; |
9583bc14 EJ |
3794 | xin->ofpacts = NULL; |
3795 | xin->ofpacts_len = 0; | |
3796 | xin->tcp_flags = tcp_flags; | |
3797 | xin->resubmit_hook = NULL; | |
3798 | xin->report_hook = NULL; | |
3799 | xin->resubmit_stats = NULL; | |
3f207910 | 3800 | xin->skip_wildcards = false; |
9583bc14 EJ |
3801 | } |
3802 | ||
3803 | void | |
3804 | xlate_out_uninit(struct xlate_out *xout) | |
3805 | { | |
3806 | if (xout) { | |
3807 | ofpbuf_uninit(&xout->odp_actions); | |
3808 | } | |
3809 | } | |
3810 | ||
3811 | /* Translates the 'ofpacts_len' bytes of "struct ofpact"s starting at 'ofpacts' | |
3812 | * into datapath actions, using 'ctx', and discards the datapath actions. */ | |
3813 | void | |
3814 | xlate_actions_for_side_effects(struct xlate_in *xin) | |
3815 | { | |
3816 | struct xlate_out xout; | |
3817 | ||
3818 | xlate_actions(xin, &xout); | |
3819 | xlate_out_uninit(&xout); | |
3820 | } | |
3821 | ||
3822 | static void | |
3823 | xlate_report(struct xlate_ctx *ctx, const char *s) | |
3824 | { | |
3825 | if (ctx->xin->report_hook) { | |
4d0acc70 | 3826 | ctx->xin->report_hook(ctx->xin, s, ctx->recurse); |
9583bc14 EJ |
3827 | } |
3828 | } | |
3829 | ||
3830 | void | |
3831 | xlate_out_copy(struct xlate_out *dst, const struct xlate_out *src) | |
3832 | { | |
3833 | dst->wc = src->wc; | |
9583bc14 EJ |
3834 | dst->slow = src->slow; |
3835 | dst->has_learn = src->has_learn; | |
3836 | dst->has_normal = src->has_normal; | |
3837 | dst->has_fin_timeout = src->has_fin_timeout; | |
3838 | dst->nf_output_iface = src->nf_output_iface; | |
3839 | dst->mirrors = src->mirrors; | |
3840 | ||
3841 | ofpbuf_use_stub(&dst->odp_actions, dst->odp_actions_stub, | |
3842 | sizeof dst->odp_actions_stub); | |
1f317cb5 PS |
3843 | ofpbuf_put(&dst->odp_actions, ofpbuf_data(&src->odp_actions), |
3844 | ofpbuf_size(&src->odp_actions)); | |
9583bc14 EJ |
3845 | } |
3846 | \f | |
55954f6e EJ |
3847 | static struct skb_priority_to_dscp * |
3848 | get_skb_priority(const struct xport *xport, uint32_t skb_priority) | |
3849 | { | |
3850 | struct skb_priority_to_dscp *pdscp; | |
3851 | uint32_t hash; | |
3852 | ||
3853 | hash = hash_int(skb_priority, 0); | |
3854 | HMAP_FOR_EACH_IN_BUCKET (pdscp, hmap_node, hash, &xport->skb_priorities) { | |
3855 | if (pdscp->skb_priority == skb_priority) { | |
3856 | return pdscp; | |
3857 | } | |
3858 | } | |
3859 | return NULL; | |
3860 | } | |
3861 | ||
3862 | static bool | |
3863 | dscp_from_skb_priority(const struct xport *xport, uint32_t skb_priority, | |
3864 | uint8_t *dscp) | |
3865 | { | |
3866 | struct skb_priority_to_dscp *pdscp = get_skb_priority(xport, skb_priority); | |
3867 | *dscp = pdscp ? pdscp->dscp : 0; | |
3868 | return pdscp != NULL; | |
3869 | } | |
3870 | ||
3871 | static void | |
3872 | clear_skb_priorities(struct xport *xport) | |
3873 | { | |
3874 | struct skb_priority_to_dscp *pdscp, *next; | |
3875 | ||
3876 | HMAP_FOR_EACH_SAFE (pdscp, next, hmap_node, &xport->skb_priorities) { | |
3877 | hmap_remove(&xport->skb_priorities, &pdscp->hmap_node); | |
3878 | free(pdscp); | |
3879 | } | |
3880 | } | |
3881 | ||
ce4a6b76 BP |
3882 | static bool |
3883 | actions_output_to_local_port(const struct xlate_ctx *ctx) | |
3884 | { | |
46c88433 | 3885 | odp_port_t local_odp_port = ofp_port_to_odp_port(ctx->xbridge, OFPP_LOCAL); |
ce4a6b76 BP |
3886 | const struct nlattr *a; |
3887 | unsigned int left; | |
3888 | ||
1f317cb5 PS |
3889 | NL_ATTR_FOR_EACH_UNSAFE (a, left, ofpbuf_data(&ctx->xout->odp_actions), |
3890 | ofpbuf_size(&ctx->xout->odp_actions)) { | |
ce4a6b76 BP |
3891 | if (nl_attr_type(a) == OVS_ACTION_ATTR_OUTPUT |
3892 | && nl_attr_get_odp_port(a) == local_odp_port) { | |
3893 | return true; | |
3894 | } | |
3895 | } | |
3896 | return false; | |
3897 | } | |
9583bc14 EJ |
3898 | |
3899 | /* Translates the 'ofpacts_len' bytes of "struct ofpacts" starting at 'ofpacts' | |
56450a41 BP |
3900 | * into datapath actions in 'odp_actions', using 'ctx'. |
3901 | * | |
3902 | * The caller must take responsibility for eventually freeing 'xout', with | |
3903 | * xlate_out_uninit(). */ | |
84f0f298 RW |
3904 | void |
3905 | xlate_actions(struct xlate_in *xin, struct xlate_out *xout) | |
9583bc14 | 3906 | { |
84f0f298 | 3907 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
33bf9176 BP |
3908 | struct flow_wildcards *wc = &xout->wc; |
3909 | struct flow *flow = &xin->flow; | |
10c44245 | 3910 | struct rule_dpif *rule = NULL; |
33bf9176 | 3911 | |
dc723c44 | 3912 | const struct rule_actions *actions = NULL; |
9583bc14 EJ |
3913 | enum slow_path_reason special; |
3914 | const struct ofpact *ofpacts; | |
46c88433 | 3915 | struct xport *in_port; |
9583bc14 EJ |
3916 | struct flow orig_flow; |
3917 | struct xlate_ctx ctx; | |
3918 | size_t ofpacts_len; | |
62a7cc71 | 3919 | bool tnl_may_send; |
c56fac1b | 3920 | bool is_icmp; |
9583bc14 | 3921 | |
46c88433 | 3922 | COVERAGE_INC(xlate_actions); |
9583bc14 EJ |
3923 | |
3924 | /* Flow initialization rules: | |
3925 | * - 'base_flow' must match the kernel's view of the packet at the | |
3926 | * time that action processing starts. 'flow' represents any | |
3927 | * transformations we wish to make through actions. | |
3928 | * - By default 'base_flow' and 'flow' are the same since the input | |
3929 | * packet matches the output before any actions are applied. | |
3930 | * - When using VLAN splinters, 'base_flow''s VLAN is set to the value | |
3931 | * of the received packet as seen by the kernel. If we later output | |
3932 | * to another device without any modifications this will cause us to | |
3933 | * insert a new tag since the original one was stripped off by the | |
3934 | * VLAN device. | |
3935 | * - Tunnel metadata as received is retained in 'flow'. This allows | |
3936 | * tunnel metadata matching also in later tables. | |
3937 | * Since a kernel action for setting the tunnel metadata will only be | |
3938 | * generated with actual tunnel output, changing the tunnel metadata | |
3939 | * values in 'flow' (such as tun_id) will only have effect with a later | |
3940 | * tunnel output action. | |
3941 | * - Tunnel 'base_flow' is completely cleared since that is what the | |
3942 | * kernel does. If we wish to maintain the original values an action | |
3943 | * needs to be generated. */ | |
3944 | ||
3945 | ctx.xin = xin; | |
3946 | ctx.xout = xout; | |
46c88433 EJ |
3947 | ctx.xout->slow = 0; |
3948 | ctx.xout->has_learn = false; | |
3949 | ctx.xout->has_normal = false; | |
3950 | ctx.xout->has_fin_timeout = false; | |
3951 | ctx.xout->nf_output_iface = NF_OUT_DROP; | |
3952 | ctx.xout->mirrors = 0; | |
3953 | ofpbuf_use_stub(&ctx.xout->odp_actions, ctx.xout->odp_actions_stub, | |
3954 | sizeof ctx.xout->odp_actions_stub); | |
3955 | ofpbuf_reserve(&ctx.xout->odp_actions, NL_A_U32_SIZE); | |
3956 | ||
84f0f298 | 3957 | ctx.xbridge = xbridge_lookup(xcfg, xin->ofproto); |
46c88433 | 3958 | if (!ctx.xbridge) { |
83709dfa | 3959 | return; |
46c88433 | 3960 | } |
9583bc14 | 3961 | |
9583bc14 EJ |
3962 | ctx.rule = xin->rule; |
3963 | ||
33bf9176 | 3964 | ctx.base_flow = *flow; |
9583bc14 | 3965 | memset(&ctx.base_flow.tunnel, 0, sizeof ctx.base_flow.tunnel); |
33bf9176 | 3966 | ctx.orig_tunnel_ip_dst = flow->tunnel.ip_dst; |
9583bc14 | 3967 | |
33bf9176 BP |
3968 | flow_wildcards_init_catchall(wc); |
3969 | memset(&wc->masks.in_port, 0xff, sizeof wc->masks.in_port); | |
1dd35f8a | 3970 | memset(&wc->masks.skb_priority, 0xff, sizeof wc->masks.skb_priority); |
7431e171 | 3971 | memset(&wc->masks.dl_type, 0xff, sizeof wc->masks.dl_type); |
0934ebba BP |
3972 | if (is_ip_any(flow)) { |
3973 | wc->masks.nw_frag |= FLOW_NW_FRAG_MASK; | |
3974 | } | |
c56fac1b | 3975 | is_icmp = is_icmpv4(flow) || is_icmpv6(flow); |
9583bc14 | 3976 | |
62a7cc71 | 3977 | tnl_may_send = tnl_xlate_init(&ctx.base_flow, flow, wc); |
ce3955be | 3978 | if (ctx.xbridge->netflow) { |
9b658910 | 3979 | netflow_mask_wc(flow, wc); |
9583bc14 EJ |
3980 | } |
3981 | ||
9583bc14 | 3982 | ctx.recurse = 0; |
98b07853 | 3983 | ctx.resubmits = 0; |
5a070238 | 3984 | ctx.in_group = false; |
33bf9176 | 3985 | ctx.orig_skb_priority = flow->skb_priority; |
9583bc14 EJ |
3986 | ctx.table_id = 0; |
3987 | ctx.exit = false; | |
92c08f09 | 3988 | ctx.use_recirc = false; |
7bbdd84f | 3989 | ctx.was_mpls = false; |
9583bc14 | 3990 | |
10c44245 | 3991 | if (!xin->ofpacts && !ctx.rule) { |
6d328fa2 SH |
3992 | ctx.table_id = rule_dpif_lookup(ctx.xbridge->ofproto, flow, |
3993 | !xin->skip_wildcards ? wc : NULL, | |
d611866c SH |
3994 | &rule, ctx.xin->xcache != NULL, |
3995 | ctx.xin->resubmit_stats); | |
10c44245 EJ |
3996 | if (ctx.xin->resubmit_stats) { |
3997 | rule_dpif_credit_stats(rule, ctx.xin->resubmit_stats); | |
3998 | } | |
b256dc52 JS |
3999 | if (ctx.xin->xcache) { |
4000 | struct xc_entry *entry; | |
4001 | ||
4002 | entry = xlate_cache_add_entry(ctx.xin->xcache, XC_RULE); | |
b256dc52 JS |
4003 | entry->u.rule = rule; |
4004 | } | |
10c44245 EJ |
4005 | ctx.rule = rule; |
4006 | } | |
ee1afdd5 | 4007 | xout->fail_open = ctx.rule && rule_dpif_is_fail_open(ctx.rule); |
10c44245 | 4008 | |
9583bc14 EJ |
4009 | if (xin->ofpacts) { |
4010 | ofpacts = xin->ofpacts; | |
4011 | ofpacts_len = xin->ofpacts_len; | |
10c44245 EJ |
4012 | } else if (ctx.rule) { |
4013 | actions = rule_dpif_get_actions(ctx.rule); | |
6f00e29b BP |
4014 | ofpacts = actions->ofpacts; |
4015 | ofpacts_len = actions->ofpacts_len; | |
9583bc14 | 4016 | } else { |
428b2edd | 4017 | OVS_NOT_REACHED(); |
9583bc14 EJ |
4018 | } |
4019 | ||
4020 | ofpbuf_use_stub(&ctx.stack, ctx.init_stack, sizeof ctx.init_stack); | |
7fdb60a7 SH |
4021 | ofpbuf_use_stub(&ctx.action_set, |
4022 | ctx.action_set_stub, sizeof ctx.action_set_stub); | |
9583bc14 | 4023 | |
ade6ad9c | 4024 | if (mbridge_has_mirrors(ctx.xbridge->mbridge)) { |
9583bc14 EJ |
4025 | /* Do this conditionally because the copy is expensive enough that it |
4026 | * shows up in profiles. */ | |
33bf9176 | 4027 | orig_flow = *flow; |
9583bc14 EJ |
4028 | } |
4029 | ||
33bf9176 | 4030 | if (flow->nw_frag & FLOW_NW_FRAG_ANY) { |
46c88433 | 4031 | switch (ctx.xbridge->frag) { |
9583bc14 EJ |
4032 | case OFPC_FRAG_NORMAL: |
4033 | /* We must pretend that transport ports are unavailable. */ | |
33bf9176 BP |
4034 | flow->tp_src = ctx.base_flow.tp_src = htons(0); |
4035 | flow->tp_dst = ctx.base_flow.tp_dst = htons(0); | |
9583bc14 EJ |
4036 | break; |
4037 | ||
4038 | case OFPC_FRAG_DROP: | |
83709dfa | 4039 | return; |
9583bc14 EJ |
4040 | |
4041 | case OFPC_FRAG_REASM: | |
428b2edd | 4042 | OVS_NOT_REACHED(); |
9583bc14 EJ |
4043 | |
4044 | case OFPC_FRAG_NX_MATCH: | |
4045 | /* Nothing to do. */ | |
4046 | break; | |
4047 | ||
4048 | case OFPC_INVALID_TTL_TO_CONTROLLER: | |
428b2edd | 4049 | OVS_NOT_REACHED(); |
9583bc14 EJ |
4050 | } |
4051 | } | |
4052 | ||
46c88433 | 4053 | in_port = get_ofp_port(ctx.xbridge, flow->in_port.ofp_port); |
b256dc52 JS |
4054 | if (in_port && in_port->is_tunnel) { |
4055 | if (ctx.xin->resubmit_stats) { | |
4056 | netdev_vport_inc_rx(in_port->netdev, ctx.xin->resubmit_stats); | |
4057 | if (in_port->bfd) { | |
4058 | bfd_account_rx(in_port->bfd, ctx.xin->resubmit_stats); | |
4059 | } | |
4060 | } | |
4061 | if (ctx.xin->xcache) { | |
4062 | struct xc_entry *entry; | |
4063 | ||
4064 | entry = xlate_cache_add_entry(ctx.xin->xcache, XC_NETDEV); | |
4065 | entry->u.dev.rx = netdev_ref(in_port->netdev); | |
4066 | entry->u.dev.bfd = bfd_ref(in_port->bfd); | |
d6fc5f57 EJ |
4067 | } |
4068 | } | |
4069 | ||
642dc74d | 4070 | special = process_special(&ctx, flow, in_port, ctx.xin->packet); |
9583bc14 | 4071 | if (special) { |
04594cd5 | 4072 | ctx.xout->slow |= special; |
9583bc14 | 4073 | } else { |
9583bc14 | 4074 | size_t sample_actions_len; |
9583bc14 | 4075 | |
4e022ec0 | 4076 | if (flow->in_port.ofp_port |
46c88433 EJ |
4077 | != vsp_realdev_to_vlandev(ctx.xbridge->ofproto, |
4078 | flow->in_port.ofp_port, | |
33bf9176 | 4079 | flow->vlan_tci)) { |
9583bc14 EJ |
4080 | ctx.base_flow.vlan_tci = 0; |
4081 | } | |
4082 | ||
4083 | add_sflow_action(&ctx); | |
4084 | add_ipfix_action(&ctx); | |
1f317cb5 | 4085 | sample_actions_len = ofpbuf_size(&ctx.xout->odp_actions); |
9583bc14 | 4086 | |
62a7cc71 | 4087 | if (tnl_may_send && (!in_port || may_receive(in_port, &ctx))) { |
9583bc14 EJ |
4088 | do_xlate_actions(ofpacts, ofpacts_len, &ctx); |
4089 | ||
4090 | /* We've let OFPP_NORMAL and the learning action look at the | |
4091 | * packet, so drop it now if forwarding is disabled. */ | |
9d189a50 | 4092 | if (in_port && !xport_stp_forward_state(in_port)) { |
1f317cb5 | 4093 | ofpbuf_set_size(&ctx.xout->odp_actions, sample_actions_len); |
9583bc14 EJ |
4094 | } |
4095 | } | |
4096 | ||
1f317cb5 | 4097 | if (ofpbuf_size(&ctx.action_set)) { |
7fdb60a7 SH |
4098 | xlate_action_set(&ctx); |
4099 | } | |
4100 | ||
46c88433 | 4101 | if (ctx.xbridge->has_in_band |
ce4a6b76 BP |
4102 | && in_band_must_output_to_local_port(flow) |
4103 | && !actions_output_to_local_port(&ctx)) { | |
9583bc14 EJ |
4104 | compose_output_action(&ctx, OFPP_LOCAL); |
4105 | } | |
aaa0fbae EJ |
4106 | |
4107 | fix_sflow_action(&ctx); | |
4108 | ||
46c88433 | 4109 | if (mbridge_has_mirrors(ctx.xbridge->mbridge)) { |
9583bc14 EJ |
4110 | add_mirror_actions(&ctx, &orig_flow); |
4111 | } | |
9583bc14 EJ |
4112 | } |
4113 | ||
1f317cb5 | 4114 | if (nl_attr_oversized(ofpbuf_size(&ctx.xout->odp_actions))) { |
542024c4 | 4115 | /* These datapath actions are too big for a Netlink attribute, so we |
0f032e95 BP |
4116 | * can't hand them to the kernel directly. dpif_execute() can execute |
4117 | * them one by one with help, so just mark the result as SLOW_ACTION to | |
4118 | * prevent the flow from being installed. */ | |
4119 | COVERAGE_INC(xlate_actions_oversize); | |
4120 | ctx.xout->slow |= SLOW_ACTION; | |
542024c4 BP |
4121 | } |
4122 | ||
b256dc52 JS |
4123 | if (mbridge_has_mirrors(ctx.xbridge->mbridge)) { |
4124 | if (ctx.xin->resubmit_stats) { | |
4125 | mirror_update_stats(ctx.xbridge->mbridge, xout->mirrors, | |
4126 | ctx.xin->resubmit_stats->n_packets, | |
4127 | ctx.xin->resubmit_stats->n_bytes); | |
4128 | } | |
4129 | if (ctx.xin->xcache) { | |
4130 | struct xc_entry *entry; | |
4131 | ||
4132 | entry = xlate_cache_add_entry(ctx.xin->xcache, XC_MIRROR); | |
4133 | entry->u.mirror.mbridge = mbridge_ref(ctx.xbridge->mbridge); | |
4134 | entry->u.mirror.mirrors = xout->mirrors; | |
4135 | } | |
4136 | } | |
4137 | ||
4138 | if (ctx.xbridge->netflow) { | |
b256dc52 JS |
4139 | /* Only update netflow if we don't have controller flow. We don't |
4140 | * report NetFlow expiration messages for such facets because they | |
4141 | * are just part of the control logic for the network, not real | |
4142 | * traffic. */ | |
4143 | if (ofpacts_len == 0 | |
4144 | || ofpacts->type != OFPACT_CONTROLLER | |
4145 | || ofpact_next(ofpacts) < ofpact_end(ofpacts, ofpacts_len)) { | |
4146 | if (ctx.xin->resubmit_stats) { | |
d6fc5f57 EJ |
4147 | netflow_flow_update(ctx.xbridge->netflow, flow, |
4148 | xout->nf_output_iface, | |
4149 | ctx.xin->resubmit_stats); | |
4150 | } | |
b256dc52 JS |
4151 | if (ctx.xin->xcache) { |
4152 | struct xc_entry *entry; | |
4153 | ||
4154 | entry = xlate_cache_add_entry(ctx.xin->xcache, XC_NETFLOW); | |
4155 | entry->u.nf.netflow = netflow_ref(ctx.xbridge->netflow); | |
4156 | entry->u.nf.flow = xmemdup(flow, sizeof *flow); | |
4157 | entry->u.nf.iface = xout->nf_output_iface; | |
4158 | } | |
d6fc5f57 EJ |
4159 | } |
4160 | } | |
4161 | ||
9583bc14 | 4162 | ofpbuf_uninit(&ctx.stack); |
7fdb60a7 | 4163 | ofpbuf_uninit(&ctx.action_set); |
9583bc14 EJ |
4164 | |
4165 | /* Clear the metadata and register wildcard masks, because we won't | |
4166 | * use non-header fields as part of the cache. */ | |
c11c6faa | 4167 | flow_wildcards_clear_non_packet_fields(wc); |
dc24a00f | 4168 | |
c56fac1b BP |
4169 | /* ICMPv4 and ICMPv6 have 8-bit "type" and "code" fields. struct flow uses |
4170 | * the low 8 bits of the 16-bit tp_src and tp_dst members to represent | |
4171 | * these fields. The datapath interface, on the other hand, represents | |
4172 | * them with just 8 bits each. This means that if the high 8 bits of the | |
4173 | * masks for these fields somehow become set, then they will get chopped | |
4174 | * off by a round trip through the datapath, and revalidation will spot | |
4175 | * that as an inconsistency and delete the flow. Avoid the problem here by | |
4176 | * making sure that only the low 8 bits of either field can be unwildcarded | |
4177 | * for ICMP. | |
4178 | */ | |
4179 | if (is_icmp) { | |
4180 | wc->masks.tp_src &= htons(UINT8_MAX); | |
4181 | wc->masks.tp_dst &= htons(UINT8_MAX); | |
4182 | } | |
91d6cd12 AW |
4183 | } |
4184 | ||
4185 | /* Sends 'packet' out 'ofport'. | |
4186 | * May modify 'packet'. | |
4187 | * Returns 0 if successful, otherwise a positive errno value. */ | |
4188 | int | |
4189 | xlate_send_packet(const struct ofport_dpif *ofport, struct ofpbuf *packet) | |
4190 | { | |
84f0f298 | 4191 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
91d6cd12 | 4192 | struct xport *xport; |
91d6cd12 | 4193 | struct ofpact_output output; |
91d6cd12 | 4194 | struct flow flow; |
91d6cd12 | 4195 | |
91d6cd12 AW |
4196 | ofpact_init(&output.ofpact, OFPACT_OUTPUT, sizeof output); |
4197 | /* Use OFPP_NONE as the in_port to avoid special packet processing. */ | |
b5e7e61a AZ |
4198 | flow_extract(packet, NULL, &flow); |
4199 | flow.in_port.ofp_port = OFPP_NONE; | |
91d6cd12 | 4200 | |
84f0f298 | 4201 | xport = xport_lookup(xcfg, ofport); |
91d6cd12 | 4202 | if (!xport) { |
02ea2703 | 4203 | return EINVAL; |
91d6cd12 | 4204 | } |
91d6cd12 AW |
4205 | output.port = xport->ofp_port; |
4206 | output.max_len = 0; | |
e491a67a YT |
4207 | |
4208 | return ofproto_dpif_execute_actions(xport->xbridge->ofproto, &flow, NULL, | |
4209 | &output.ofpact, sizeof output, | |
4210 | packet); | |
9583bc14 | 4211 | } |
b256dc52 JS |
4212 | |
4213 | struct xlate_cache * | |
4214 | xlate_cache_new(void) | |
4215 | { | |
4216 | struct xlate_cache *xcache = xmalloc(sizeof *xcache); | |
4217 | ||
4218 | ofpbuf_init(&xcache->entries, 512); | |
4219 | return xcache; | |
4220 | } | |
4221 | ||
4222 | static struct xc_entry * | |
4223 | xlate_cache_add_entry(struct xlate_cache *xcache, enum xc_type type) | |
4224 | { | |
4225 | struct xc_entry *entry; | |
4226 | ||
4227 | entry = ofpbuf_put_zeros(&xcache->entries, sizeof *entry); | |
4228 | entry->type = type; | |
4229 | ||
4230 | return entry; | |
4231 | } | |
4232 | ||
4233 | static void | |
4234 | xlate_cache_netdev(struct xc_entry *entry, const struct dpif_flow_stats *stats) | |
4235 | { | |
4236 | if (entry->u.dev.tx) { | |
4237 | netdev_vport_inc_tx(entry->u.dev.tx, stats); | |
4238 | } | |
4239 | if (entry->u.dev.rx) { | |
4240 | netdev_vport_inc_rx(entry->u.dev.rx, stats); | |
4241 | } | |
4242 | if (entry->u.dev.bfd) { | |
4243 | bfd_account_rx(entry->u.dev.bfd, stats); | |
4244 | } | |
4245 | } | |
4246 | ||
4247 | static void | |
4248 | xlate_cache_normal(struct ofproto_dpif *ofproto, struct flow *flow, int vlan) | |
4249 | { | |
84f0f298 | 4250 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
b256dc52 JS |
4251 | struct xbridge *xbridge; |
4252 | struct xbundle *xbundle; | |
4253 | struct flow_wildcards wc; | |
4254 | ||
84f0f298 | 4255 | xbridge = xbridge_lookup(xcfg, ofproto); |
b256dc52 JS |
4256 | if (!xbridge) { |
4257 | return; | |
4258 | } | |
4259 | ||
4260 | xbundle = lookup_input_bundle(xbridge, flow->in_port.ofp_port, false, | |
4261 | NULL); | |
4262 | if (!xbundle) { | |
4263 | return; | |
4264 | } | |
4265 | ||
4266 | update_learning_table(xbridge, flow, &wc, vlan, xbundle); | |
4267 | } | |
4268 | ||
4269 | /* Push stats and perform side effects of flow translation. */ | |
4270 | void | |
4271 | xlate_push_stats(struct xlate_cache *xcache, bool may_learn, | |
4272 | const struct dpif_flow_stats *stats) | |
4273 | { | |
4274 | struct xc_entry *entry; | |
4275 | struct ofpbuf entries = xcache->entries; | |
4276 | ||
4277 | XC_ENTRY_FOR_EACH (entry, entries, xcache) { | |
4278 | switch (entry->type) { | |
4279 | case XC_RULE: | |
4280 | rule_dpif_credit_stats(entry->u.rule, stats); | |
4281 | break; | |
4282 | case XC_BOND: | |
4283 | bond_account(entry->u.bond.bond, entry->u.bond.flow, | |
4284 | entry->u.bond.vid, stats->n_bytes); | |
4285 | break; | |
4286 | case XC_NETDEV: | |
4287 | xlate_cache_netdev(entry, stats); | |
4288 | break; | |
4289 | case XC_NETFLOW: | |
4290 | netflow_flow_update(entry->u.nf.netflow, entry->u.nf.flow, | |
4291 | entry->u.nf.iface, stats); | |
4292 | break; | |
4293 | case XC_MIRROR: | |
4294 | mirror_update_stats(entry->u.mirror.mbridge, | |
4295 | entry->u.mirror.mirrors, | |
4296 | stats->n_packets, stats->n_bytes); | |
4297 | break; | |
4298 | case XC_LEARN: | |
4299 | if (may_learn) { | |
4165b5e0 JS |
4300 | ofproto_dpif_flow_mod(entry->u.learn.ofproto, |
4301 | entry->u.learn.fm); | |
b256dc52 JS |
4302 | } |
4303 | break; | |
4304 | case XC_NORMAL: | |
4305 | xlate_cache_normal(entry->u.normal.ofproto, entry->u.normal.flow, | |
4306 | entry->u.normal.vlan); | |
4307 | break; | |
4308 | case XC_FIN_TIMEOUT: | |
4309 | xlate_fin_timeout__(entry->u.fin.rule, stats->tcp_flags, | |
4310 | entry->u.fin.idle, entry->u.fin.hard); | |
4311 | break; | |
1e684d7d RW |
4312 | case XC_GROUP: |
4313 | group_dpif_credit_stats(entry->u.group.group, entry->u.group.bucket, | |
4314 | stats); | |
4315 | break; | |
b256dc52 JS |
4316 | default: |
4317 | OVS_NOT_REACHED(); | |
4318 | } | |
4319 | } | |
4320 | } | |
4321 | ||
4322 | static void | |
4323 | xlate_dev_unref(struct xc_entry *entry) | |
4324 | { | |
4325 | if (entry->u.dev.tx) { | |
4326 | netdev_close(entry->u.dev.tx); | |
4327 | } | |
4328 | if (entry->u.dev.rx) { | |
4329 | netdev_close(entry->u.dev.rx); | |
4330 | } | |
4331 | if (entry->u.dev.bfd) { | |
4332 | bfd_unref(entry->u.dev.bfd); | |
4333 | } | |
4334 | } | |
4335 | ||
4336 | static void | |
4337 | xlate_cache_clear_netflow(struct netflow *netflow, struct flow *flow) | |
4338 | { | |
b256dc52 JS |
4339 | netflow_flow_clear(netflow, flow); |
4340 | netflow_unref(netflow); | |
4341 | free(flow); | |
4342 | } | |
4343 | ||
4344 | void | |
4345 | xlate_cache_clear(struct xlate_cache *xcache) | |
4346 | { | |
4347 | struct xc_entry *entry; | |
4348 | struct ofpbuf entries; | |
4349 | ||
4350 | if (!xcache) { | |
4351 | return; | |
4352 | } | |
4353 | ||
4354 | XC_ENTRY_FOR_EACH (entry, entries, xcache) { | |
4355 | switch (entry->type) { | |
4356 | case XC_RULE: | |
4357 | rule_dpif_unref(entry->u.rule); | |
4358 | break; | |
4359 | case XC_BOND: | |
4360 | free(entry->u.bond.flow); | |
4361 | bond_unref(entry->u.bond.bond); | |
4362 | break; | |
4363 | case XC_NETDEV: | |
4364 | xlate_dev_unref(entry); | |
4365 | break; | |
4366 | case XC_NETFLOW: | |
4367 | xlate_cache_clear_netflow(entry->u.nf.netflow, entry->u.nf.flow); | |
4368 | break; | |
4369 | case XC_MIRROR: | |
4370 | mbridge_unref(entry->u.mirror.mbridge); | |
4371 | break; | |
4372 | case XC_LEARN: | |
4165b5e0 JS |
4373 | free(entry->u.learn.fm); |
4374 | ofpbuf_delete(entry->u.learn.ofpacts); | |
b256dc52 JS |
4375 | break; |
4376 | case XC_NORMAL: | |
4377 | free(entry->u.normal.flow); | |
4378 | break; | |
4379 | case XC_FIN_TIMEOUT: | |
83709dfa JR |
4380 | /* 'u.fin.rule' is always already held as a XC_RULE, which |
4381 | * has already released it's reference above. */ | |
b256dc52 | 4382 | break; |
1e684d7d RW |
4383 | case XC_GROUP: |
4384 | group_dpif_unref(entry->u.group.group); | |
4385 | break; | |
b256dc52 JS |
4386 | default: |
4387 | OVS_NOT_REACHED(); | |
4388 | } | |
4389 | } | |
4390 | ||
4391 | ofpbuf_clear(&xcache->entries); | |
4392 | } | |
4393 | ||
4394 | void | |
4395 | xlate_cache_delete(struct xlate_cache *xcache) | |
4396 | { | |
4397 | xlate_cache_clear(xcache); | |
4398 | ofpbuf_uninit(&xcache->entries); | |
4399 | free(xcache); | |
4400 | } |