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