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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); |
7d031d7e | 56 | COVERAGE_DEFINE(xlate_actions_too_many_output); |
8bfd0fda | 57 | COVERAGE_DEFINE(xlate_actions_mpls_overflow); |
9583bc14 EJ |
58 | |
59 | VLOG_DEFINE_THIS_MODULE(ofproto_dpif_xlate); | |
60 | ||
8a553e9a EJ |
61 | /* Maximum depth of flow table recursion (due to resubmit actions) in a |
62 | * flow translation. */ | |
63 | #define MAX_RESUBMIT_RECURSION 64 | |
adcf00ba AZ |
64 | #define MAX_INTERNAL_RESUBMITS 1 /* Max resbmits allowed using rules in |
65 | internal table. */ | |
8a553e9a | 66 | |
7bbdd84f SH |
67 | /* Timeout for internal rules created to handle recirculation */ |
68 | #define RECIRC_TIMEOUT 60 | |
69 | ||
98b07853 BP |
70 | /* Maximum number of resubmit actions in a flow translation, whether they are |
71 | * recursive or not. */ | |
72 | #define MAX_RESUBMITS (MAX_RESUBMIT_RECURSION * MAX_RESUBMIT_RECURSION) | |
73 | ||
46c88433 EJ |
74 | struct xbridge { |
75 | struct hmap_node hmap_node; /* Node in global 'xbridges' map. */ | |
76 | struct ofproto_dpif *ofproto; /* Key in global 'xbridges' map. */ | |
77 | ||
78 | struct list xbundles; /* Owned xbundles. */ | |
79 | struct hmap xports; /* Indexed by ofp_port. */ | |
80 | ||
81 | char *name; /* Name used in log messages. */ | |
89a8a7f0 | 82 | struct dpif *dpif; /* Datapath interface. */ |
46c88433 | 83 | struct mac_learning *ml; /* Mac learning handle. */ |
6d95c4e8 | 84 | struct mcast_snooping *ms; /* Multicast Snooping handle. */ |
46c88433 EJ |
85 | struct mbridge *mbridge; /* Mirroring. */ |
86 | struct dpif_sflow *sflow; /* SFlow handle, or null. */ | |
87 | struct dpif_ipfix *ipfix; /* Ipfix handle, or null. */ | |
ce3955be | 88 | struct netflow *netflow; /* Netflow handle, or null. */ |
9d189a50 | 89 | struct stp *stp; /* STP or null if disabled. */ |
9efd308e | 90 | struct rstp *rstp; /* RSTP or null if disabled. */ |
46c88433 | 91 | |
ec89fc6f EJ |
92 | /* Special rules installed by ofproto-dpif. */ |
93 | struct rule_dpif *miss_rule; | |
94 | struct rule_dpif *no_packet_in_rule; | |
95 | ||
46c88433 | 96 | enum ofp_config_flags frag; /* Fragmentation handling. */ |
46c88433 EJ |
97 | bool has_in_band; /* Bridge has in band control? */ |
98 | bool forward_bpdu; /* Bridge forwards STP BPDUs? */ | |
4b97b70d | 99 | |
adcf00ba AZ |
100 | /* True if the datapath supports recirculation. */ |
101 | bool enable_recirc; | |
102 | ||
4b97b70d BP |
103 | /* True if the datapath supports variable-length |
104 | * OVS_USERSPACE_ATTR_USERDATA in OVS_ACTION_ATTR_USERSPACE actions. | |
105 | * False if the datapath supports only 8-byte (or shorter) userdata. */ | |
106 | bool variable_length_userdata; | |
8bfd0fda BP |
107 | |
108 | /* Number of MPLS label stack entries that the datapath supports | |
109 | * in matches. */ | |
110 | size_t max_mpls_depth; | |
53477c2c JR |
111 | |
112 | /* True if the datapath supports masked data in OVS_ACTION_ATTR_SET | |
113 | * actions. */ | |
114 | bool masked_set_action; | |
46c88433 EJ |
115 | }; |
116 | ||
117 | struct xbundle { | |
118 | struct hmap_node hmap_node; /* In global 'xbundles' map. */ | |
119 | struct ofbundle *ofbundle; /* Key in global 'xbundles' map. */ | |
120 | ||
121 | struct list list_node; /* In parent 'xbridges' list. */ | |
122 | struct xbridge *xbridge; /* Parent xbridge. */ | |
123 | ||
124 | struct list xports; /* Contains "struct xport"s. */ | |
125 | ||
126 | char *name; /* Name used in log messages. */ | |
127 | struct bond *bond; /* Nonnull iff more than one port. */ | |
128 | struct lacp *lacp; /* LACP handle or null. */ | |
129 | ||
130 | enum port_vlan_mode vlan_mode; /* VLAN mode. */ | |
131 | int vlan; /* -1=trunk port, else a 12-bit VLAN ID. */ | |
132 | unsigned long *trunks; /* Bitmap of trunked VLANs, if 'vlan' == -1. | |
133 | * NULL if all VLANs are trunked. */ | |
134 | bool use_priority_tags; /* Use 802.1p tag for frames in VLAN 0? */ | |
135 | bool floodable; /* No port has OFPUTIL_PC_NO_FLOOD set? */ | |
136 | }; | |
137 | ||
138 | struct xport { | |
139 | struct hmap_node hmap_node; /* Node in global 'xports' map. */ | |
140 | struct ofport_dpif *ofport; /* Key in global 'xports map. */ | |
141 | ||
142 | struct hmap_node ofp_node; /* Node in parent xbridge 'xports' map. */ | |
143 | ofp_port_t ofp_port; /* Key in parent xbridge 'xports' map. */ | |
144 | ||
145 | odp_port_t odp_port; /* Datapath port number or ODPP_NONE. */ | |
146 | ||
147 | struct list bundle_node; /* In parent xbundle (if it exists). */ | |
148 | struct xbundle *xbundle; /* Parent xbundle or null. */ | |
149 | ||
150 | struct netdev *netdev; /* 'ofport''s netdev. */ | |
151 | ||
152 | struct xbridge *xbridge; /* Parent bridge. */ | |
153 | struct xport *peer; /* Patch port peer or null. */ | |
154 | ||
155 | enum ofputil_port_config config; /* OpenFlow port configuration. */ | |
dd8cd4b4 | 156 | enum ofputil_port_state state; /* OpenFlow port state. */ |
92cf817b | 157 | int stp_port_no; /* STP port number or -1 if not in use. */ |
f025bcb7 | 158 | struct rstp_port *rstp_port; /* RSTP port or null. */ |
46c88433 | 159 | |
55954f6e EJ |
160 | struct hmap skb_priorities; /* Map of 'skb_priority_to_dscp's. */ |
161 | ||
46c88433 EJ |
162 | bool may_enable; /* May be enabled in bonds. */ |
163 | bool is_tunnel; /* Is a tunnel port. */ | |
164 | ||
165 | struct cfm *cfm; /* CFM handle or null. */ | |
166 | struct bfd *bfd; /* BFD handle or null. */ | |
167 | }; | |
168 | ||
4d0acc70 EJ |
169 | struct xlate_ctx { |
170 | struct xlate_in *xin; | |
171 | struct xlate_out *xout; | |
172 | ||
46c88433 | 173 | const struct xbridge *xbridge; |
4d0acc70 EJ |
174 | |
175 | /* Flow at the last commit. */ | |
176 | struct flow base_flow; | |
177 | ||
178 | /* Tunnel IP destination address as received. This is stored separately | |
179 | * as the base_flow.tunnel is cleared on init to reflect the datapath | |
180 | * behavior. Used to make sure not to send tunneled output to ourselves, | |
181 | * which might lead to an infinite loop. This could happen easily | |
182 | * if a tunnel is marked as 'ip_remote=flow', and the flow does not | |
183 | * actually set the tun_dst field. */ | |
184 | ovs_be32 orig_tunnel_ip_dst; | |
185 | ||
186 | /* Stack for the push and pop actions. Each stack element is of type | |
187 | * "union mf_subvalue". */ | |
188 | union mf_subvalue init_stack[1024 / sizeof(union mf_subvalue)]; | |
189 | struct ofpbuf stack; | |
190 | ||
191 | /* The rule that we are currently translating, or NULL. */ | |
192 | struct rule_dpif *rule; | |
193 | ||
98b07853 BP |
194 | /* Resubmit statistics, via xlate_table_action(). */ |
195 | int recurse; /* Current resubmit nesting depth. */ | |
196 | int resubmits; /* Total number of resubmits. */ | |
5a070238 | 197 | bool in_group; /* Currently translating ofgroup, if true. */ |
98b07853 | 198 | |
4d0acc70 EJ |
199 | uint32_t orig_skb_priority; /* Priority when packet arrived. */ |
200 | uint8_t table_id; /* OpenFlow table ID where flow was found. */ | |
201 | uint32_t sflow_n_outputs; /* Number of output ports. */ | |
4e022ec0 | 202 | odp_port_t sflow_odp_port; /* Output port for composing sFlow action. */ |
4d0acc70 EJ |
203 | uint16_t user_cookie_offset;/* Used for user_action_cookie fixup. */ |
204 | bool exit; /* No further actions should be processed. */ | |
7fdb60a7 | 205 | |
92c08f09 SH |
206 | bool use_recirc; /* Should generate recirc? */ |
207 | struct xlate_recirc recirc; /* Information used for generating | |
208 | * recirculation actions */ | |
209 | ||
7bbdd84f SH |
210 | /* True if a packet was but is no longer MPLS (due to an MPLS pop action). |
211 | * This is a trigger for recirculation in cases where translating an action | |
212 | * or looking up a flow requires access to the fields of the packet after | |
213 | * the MPLS label stack that was originally present. */ | |
214 | bool was_mpls; | |
215 | ||
7fdb60a7 SH |
216 | /* OpenFlow 1.1+ action set. |
217 | * | |
218 | * 'action_set' accumulates "struct ofpact"s added by OFPACT_WRITE_ACTIONS. | |
219 | * When translation is otherwise complete, ofpacts_execute_action_set() | |
220 | * converts it to a set of "struct ofpact"s that can be translated into | |
221 | * datapath actions. */ | |
222 | struct ofpbuf action_set; /* Action set. */ | |
223 | uint64_t action_set_stub[1024 / 8]; | |
4d0acc70 EJ |
224 | }; |
225 | ||
9583bc14 EJ |
226 | /* A controller may use OFPP_NONE as the ingress port to indicate that |
227 | * it did not arrive on a "real" port. 'ofpp_none_bundle' exists for | |
228 | * when an input bundle is needed for validation (e.g., mirroring or | |
229 | * OFPP_NORMAL processing). It is not connected to an 'ofproto' or have | |
3548d242 BP |
230 | * any 'port' structs, so care must be taken when dealing with it. */ |
231 | static struct xbundle ofpp_none_bundle = { | |
232 | .name = "OFPP_NONE", | |
233 | .vlan_mode = PORT_VLAN_TRUNK | |
234 | }; | |
9583bc14 | 235 | |
55954f6e EJ |
236 | /* Node in 'xport''s 'skb_priorities' map. Used to maintain a map from |
237 | * 'priority' (the datapath's term for QoS queue) to the dscp bits which all | |
238 | * traffic egressing the 'ofport' with that priority should be marked with. */ | |
239 | struct skb_priority_to_dscp { | |
240 | struct hmap_node hmap_node; /* Node in 'ofport_dpif''s 'skb_priorities'. */ | |
241 | uint32_t skb_priority; /* Priority of this queue (see struct flow). */ | |
242 | ||
243 | uint8_t dscp; /* DSCP bits to mark outgoing traffic with. */ | |
244 | }; | |
245 | ||
b256dc52 JS |
246 | enum xc_type { |
247 | XC_RULE, | |
248 | XC_BOND, | |
249 | XC_NETDEV, | |
250 | XC_NETFLOW, | |
251 | XC_MIRROR, | |
252 | XC_LEARN, | |
253 | XC_NORMAL, | |
254 | XC_FIN_TIMEOUT, | |
1e684d7d | 255 | XC_GROUP, |
b256dc52 JS |
256 | }; |
257 | ||
258 | /* xlate_cache entries hold enough information to perform the side effects of | |
259 | * xlate_actions() for a rule, without needing to perform rule translation | |
260 | * from scratch. The primary usage of these is to submit statistics to objects | |
261 | * that a flow relates to, although they may be used for other effects as well | |
262 | * (for instance, refreshing hard timeouts for learned flows). */ | |
263 | struct xc_entry { | |
264 | enum xc_type type; | |
265 | union { | |
266 | struct rule_dpif *rule; | |
267 | struct { | |
268 | struct netdev *tx; | |
269 | struct netdev *rx; | |
270 | struct bfd *bfd; | |
271 | } dev; | |
272 | struct { | |
273 | struct netflow *netflow; | |
274 | struct flow *flow; | |
275 | ofp_port_t iface; | |
276 | } nf; | |
277 | struct { | |
278 | struct mbridge *mbridge; | |
279 | mirror_mask_t mirrors; | |
280 | } mirror; | |
281 | struct { | |
282 | struct bond *bond; | |
283 | struct flow *flow; | |
284 | uint16_t vid; | |
285 | } bond; | |
286 | struct { | |
4165b5e0 JS |
287 | struct ofproto_dpif *ofproto; |
288 | struct ofputil_flow_mod *fm; | |
289 | struct ofpbuf *ofpacts; | |
b256dc52 JS |
290 | } learn; |
291 | struct { | |
292 | struct ofproto_dpif *ofproto; | |
293 | struct flow *flow; | |
294 | int vlan; | |
295 | } normal; | |
296 | struct { | |
297 | struct rule_dpif *rule; | |
298 | uint16_t idle; | |
299 | uint16_t hard; | |
300 | } fin; | |
1e684d7d RW |
301 | struct { |
302 | struct group_dpif *group; | |
303 | struct ofputil_bucket *bucket; | |
304 | } group; | |
b256dc52 JS |
305 | } u; |
306 | }; | |
307 | ||
308 | #define XC_ENTRY_FOR_EACH(entry, entries, xcache) \ | |
309 | entries = xcache->entries; \ | |
310 | for (entry = ofpbuf_try_pull(&entries, sizeof *entry); \ | |
311 | entry; \ | |
312 | entry = ofpbuf_try_pull(&entries, sizeof *entry)) | |
313 | ||
314 | struct xlate_cache { | |
315 | struct ofpbuf entries; | |
316 | }; | |
317 | ||
84f0f298 RW |
318 | /* Xlate config contains hash maps of all bridges, bundles and ports. |
319 | * Xcfgp contains the pointer to the current xlate configuration. | |
320 | * When the main thread needs to change the configuration, it copies xcfgp to | |
321 | * new_xcfg and edits new_xcfg. This enables the use of RCU locking which | |
322 | * does not block handler and revalidator threads. */ | |
323 | struct xlate_cfg { | |
324 | struct hmap xbridges; | |
325 | struct hmap xbundles; | |
326 | struct hmap xports; | |
327 | }; | |
f439f23b BP |
328 | static OVSRCU_TYPE(struct xlate_cfg *) xcfgp = OVSRCU_TYPE_INITIALIZER; |
329 | static struct xlate_cfg *new_xcfg = NULL; | |
46c88433 EJ |
330 | |
331 | static bool may_receive(const struct xport *, struct xlate_ctx *); | |
9583bc14 EJ |
332 | static void do_xlate_actions(const struct ofpact *, size_t ofpacts_len, |
333 | struct xlate_ctx *); | |
adcf00ba AZ |
334 | static void xlate_normal(struct xlate_ctx *); |
335 | static void xlate_report(struct xlate_ctx *, const char *); | |
6d328fa2 SH |
336 | static void xlate_table_action(struct xlate_ctx *, ofp_port_t in_port, |
337 | uint8_t table_id, bool may_packet_in, | |
338 | bool honor_table_miss); | |
46c88433 EJ |
339 | static bool input_vid_is_valid(uint16_t vid, struct xbundle *, bool warn); |
340 | static uint16_t input_vid_to_vlan(const struct xbundle *, uint16_t vid); | |
341 | static void output_normal(struct xlate_ctx *, const struct xbundle *, | |
9583bc14 | 342 | uint16_t vlan); |
4e022ec0 | 343 | static void compose_output_action(struct xlate_ctx *, ofp_port_t ofp_port); |
9583bc14 | 344 | |
84f0f298 RW |
345 | static struct xbridge *xbridge_lookup(struct xlate_cfg *, |
346 | const struct ofproto_dpif *); | |
347 | static struct xbundle *xbundle_lookup(struct xlate_cfg *, | |
348 | const struct ofbundle *); | |
349 | static struct xport *xport_lookup(struct xlate_cfg *, | |
350 | const struct ofport_dpif *); | |
46c88433 | 351 | static struct xport *get_ofp_port(const struct xbridge *, ofp_port_t ofp_port); |
55954f6e EJ |
352 | static struct skb_priority_to_dscp *get_skb_priority(const struct xport *, |
353 | uint32_t skb_priority); | |
354 | static void clear_skb_priorities(struct xport *); | |
16194afd | 355 | static size_t count_skb_priorities(const struct xport *); |
55954f6e EJ |
356 | static bool dscp_from_skb_priority(const struct xport *, uint32_t skb_priority, |
357 | uint8_t *dscp); | |
46c88433 | 358 | |
b256dc52 JS |
359 | static struct xc_entry *xlate_cache_add_entry(struct xlate_cache *xc, |
360 | enum xc_type type); | |
84f0f298 RW |
361 | static void xlate_xbridge_init(struct xlate_cfg *, struct xbridge *); |
362 | static void xlate_xbundle_init(struct xlate_cfg *, struct xbundle *); | |
363 | static void xlate_xport_init(struct xlate_cfg *, struct xport *); | |
9efd308e | 364 | static void xlate_xbridge_set(struct xbridge *, struct dpif *, |
84f0f298 RW |
365 | struct rule_dpif *miss_rule, |
366 | struct rule_dpif *no_packet_in_rule, | |
9efd308e DV |
367 | const struct mac_learning *, struct stp *, |
368 | struct rstp *, const struct mcast_snooping *, | |
369 | const struct mbridge *, | |
370 | const struct dpif_sflow *, | |
371 | const struct dpif_ipfix *, | |
372 | const struct netflow *, enum ofp_config_flags, | |
84f0f298 RW |
373 | bool forward_bpdu, bool has_in_band, |
374 | bool enable_recirc, | |
375 | bool variable_length_userdata, | |
53477c2c JR |
376 | size_t max_mpls_depth, |
377 | bool masked_set_action); | |
84f0f298 RW |
378 | static void xlate_xbundle_set(struct xbundle *xbundle, |
379 | enum port_vlan_mode vlan_mode, int vlan, | |
380 | unsigned long *trunks, bool use_priority_tags, | |
381 | const struct bond *bond, const struct lacp *lacp, | |
382 | bool floodable); | |
383 | static void xlate_xport_set(struct xport *xport, odp_port_t odp_port, | |
384 | const struct netdev *netdev, const struct cfm *cfm, | |
385 | const struct bfd *bfd, int stp_port_no, | |
f025bcb7 | 386 | const struct rstp_port *rstp_port, |
84f0f298 RW |
387 | enum ofputil_port_config config, |
388 | enum ofputil_port_state state, bool is_tunnel, | |
389 | bool may_enable); | |
390 | static void xlate_xbridge_remove(struct xlate_cfg *, struct xbridge *); | |
391 | static void xlate_xbundle_remove(struct xlate_cfg *, struct xbundle *); | |
392 | static void xlate_xport_remove(struct xlate_cfg *, struct xport *); | |
393 | static void xlate_xbridge_copy(struct xbridge *); | |
394 | static void xlate_xbundle_copy(struct xbridge *, struct xbundle *); | |
395 | static void xlate_xport_copy(struct xbridge *, struct xbundle *, | |
396 | struct xport *); | |
397 | static void xlate_xcfg_free(struct xlate_cfg *); | |
b256dc52 | 398 | |
84f0f298 RW |
399 | |
400 | static void | |
401 | xlate_xbridge_init(struct xlate_cfg *xcfg, struct xbridge *xbridge) | |
402 | { | |
403 | list_init(&xbridge->xbundles); | |
404 | hmap_init(&xbridge->xports); | |
405 | hmap_insert(&xcfg->xbridges, &xbridge->hmap_node, | |
406 | hash_pointer(xbridge->ofproto, 0)); | |
407 | } | |
408 | ||
409 | static void | |
410 | xlate_xbundle_init(struct xlate_cfg *xcfg, struct xbundle *xbundle) | |
411 | { | |
412 | list_init(&xbundle->xports); | |
413 | list_insert(&xbundle->xbridge->xbundles, &xbundle->list_node); | |
414 | hmap_insert(&xcfg->xbundles, &xbundle->hmap_node, | |
415 | hash_pointer(xbundle->ofbundle, 0)); | |
416 | } | |
417 | ||
418 | static void | |
419 | xlate_xport_init(struct xlate_cfg *xcfg, struct xport *xport) | |
420 | { | |
421 | hmap_init(&xport->skb_priorities); | |
422 | hmap_insert(&xcfg->xports, &xport->hmap_node, | |
423 | hash_pointer(xport->ofport, 0)); | |
424 | hmap_insert(&xport->xbridge->xports, &xport->ofp_node, | |
425 | hash_ofp_port(xport->ofp_port)); | |
426 | } | |
427 | ||
428 | static void | |
429 | xlate_xbridge_set(struct xbridge *xbridge, | |
430 | struct dpif *dpif, | |
431 | struct rule_dpif *miss_rule, | |
ec89fc6f EJ |
432 | struct rule_dpif *no_packet_in_rule, |
433 | const struct mac_learning *ml, struct stp *stp, | |
9efd308e | 434 | struct rstp *rstp, const struct mcast_snooping *ms, |
ec89fc6f | 435 | const struct mbridge *mbridge, |
46c88433 | 436 | const struct dpif_sflow *sflow, |
ce3955be EJ |
437 | const struct dpif_ipfix *ipfix, |
438 | const struct netflow *netflow, enum ofp_config_flags frag, | |
4b97b70d | 439 | bool forward_bpdu, bool has_in_band, |
adcf00ba | 440 | bool enable_recirc, |
8bfd0fda | 441 | bool variable_length_userdata, |
53477c2c JR |
442 | size_t max_mpls_depth, |
443 | bool masked_set_action) | |
46c88433 | 444 | { |
46c88433 EJ |
445 | if (xbridge->ml != ml) { |
446 | mac_learning_unref(xbridge->ml); | |
447 | xbridge->ml = mac_learning_ref(ml); | |
448 | } | |
449 | ||
6d95c4e8 FL |
450 | if (xbridge->ms != ms) { |
451 | mcast_snooping_unref(xbridge->ms); | |
452 | xbridge->ms = mcast_snooping_ref(ms); | |
453 | } | |
454 | ||
46c88433 EJ |
455 | if (xbridge->mbridge != mbridge) { |
456 | mbridge_unref(xbridge->mbridge); | |
457 | xbridge->mbridge = mbridge_ref(mbridge); | |
458 | } | |
459 | ||
460 | if (xbridge->sflow != sflow) { | |
461 | dpif_sflow_unref(xbridge->sflow); | |
462 | xbridge->sflow = dpif_sflow_ref(sflow); | |
463 | } | |
464 | ||
465 | if (xbridge->ipfix != ipfix) { | |
466 | dpif_ipfix_unref(xbridge->ipfix); | |
467 | xbridge->ipfix = dpif_ipfix_ref(ipfix); | |
468 | } | |
469 | ||
9d189a50 EJ |
470 | if (xbridge->stp != stp) { |
471 | stp_unref(xbridge->stp); | |
472 | xbridge->stp = stp_ref(stp); | |
473 | } | |
474 | ||
9efd308e DV |
475 | if (xbridge->rstp != rstp) { |
476 | rstp_unref(xbridge->rstp); | |
477 | xbridge->rstp = rstp_ref(rstp); | |
478 | } | |
479 | ||
ce3955be EJ |
480 | if (xbridge->netflow != netflow) { |
481 | netflow_unref(xbridge->netflow); | |
482 | xbridge->netflow = netflow_ref(netflow); | |
483 | } | |
484 | ||
89a8a7f0 | 485 | xbridge->dpif = dpif; |
46c88433 EJ |
486 | xbridge->forward_bpdu = forward_bpdu; |
487 | xbridge->has_in_band = has_in_band; | |
46c88433 | 488 | xbridge->frag = frag; |
ec89fc6f EJ |
489 | xbridge->miss_rule = miss_rule; |
490 | xbridge->no_packet_in_rule = no_packet_in_rule; | |
adcf00ba | 491 | xbridge->enable_recirc = enable_recirc; |
4b97b70d | 492 | xbridge->variable_length_userdata = variable_length_userdata; |
8bfd0fda | 493 | xbridge->max_mpls_depth = max_mpls_depth; |
53477c2c | 494 | xbridge->masked_set_action = masked_set_action; |
46c88433 EJ |
495 | } |
496 | ||
84f0f298 RW |
497 | static void |
498 | xlate_xbundle_set(struct xbundle *xbundle, | |
499 | enum port_vlan_mode vlan_mode, int vlan, | |
500 | unsigned long *trunks, bool use_priority_tags, | |
501 | const struct bond *bond, const struct lacp *lacp, | |
502 | bool floodable) | |
503 | { | |
504 | ovs_assert(xbundle->xbridge); | |
505 | ||
506 | xbundle->vlan_mode = vlan_mode; | |
507 | xbundle->vlan = vlan; | |
508 | xbundle->trunks = trunks; | |
509 | xbundle->use_priority_tags = use_priority_tags; | |
510 | xbundle->floodable = floodable; | |
511 | ||
512 | if (xbundle->bond != bond) { | |
513 | bond_unref(xbundle->bond); | |
514 | xbundle->bond = bond_ref(bond); | |
515 | } | |
516 | ||
517 | if (xbundle->lacp != lacp) { | |
518 | lacp_unref(xbundle->lacp); | |
519 | xbundle->lacp = lacp_ref(lacp); | |
520 | } | |
521 | } | |
522 | ||
523 | static void | |
524 | xlate_xport_set(struct xport *xport, odp_port_t odp_port, | |
525 | const struct netdev *netdev, const struct cfm *cfm, | |
f025bcb7 JR |
526 | const struct bfd *bfd, int stp_port_no, |
527 | const struct rstp_port* rstp_port, | |
84f0f298 RW |
528 | enum ofputil_port_config config, enum ofputil_port_state state, |
529 | bool is_tunnel, bool may_enable) | |
530 | { | |
531 | xport->config = config; | |
532 | xport->state = state; | |
533 | xport->stp_port_no = stp_port_no; | |
534 | xport->is_tunnel = is_tunnel; | |
535 | xport->may_enable = may_enable; | |
536 | xport->odp_port = odp_port; | |
537 | ||
f025bcb7 JR |
538 | if (xport->rstp_port != rstp_port) { |
539 | rstp_port_unref(xport->rstp_port); | |
540 | xport->rstp_port = rstp_port_ref(rstp_port); | |
541 | } | |
542 | ||
84f0f298 RW |
543 | if (xport->cfm != cfm) { |
544 | cfm_unref(xport->cfm); | |
545 | xport->cfm = cfm_ref(cfm); | |
546 | } | |
547 | ||
548 | if (xport->bfd != bfd) { | |
549 | bfd_unref(xport->bfd); | |
550 | xport->bfd = bfd_ref(bfd); | |
551 | } | |
552 | ||
553 | if (xport->netdev != netdev) { | |
554 | netdev_close(xport->netdev); | |
555 | xport->netdev = netdev_ref(netdev); | |
556 | } | |
557 | } | |
558 | ||
559 | static void | |
560 | xlate_xbridge_copy(struct xbridge *xbridge) | |
561 | { | |
562 | struct xbundle *xbundle; | |
563 | struct xport *xport; | |
564 | struct xbridge *new_xbridge = xzalloc(sizeof *xbridge); | |
565 | new_xbridge->ofproto = xbridge->ofproto; | |
566 | new_xbridge->name = xstrdup(xbridge->name); | |
567 | xlate_xbridge_init(new_xcfg, new_xbridge); | |
568 | ||
569 | xlate_xbridge_set(new_xbridge, | |
570 | xbridge->dpif, xbridge->miss_rule, | |
571 | xbridge->no_packet_in_rule, xbridge->ml, xbridge->stp, | |
9efd308e DV |
572 | xbridge->rstp, xbridge->ms, xbridge->mbridge, |
573 | xbridge->sflow, xbridge->ipfix, xbridge->netflow, | |
574 | xbridge->frag, xbridge->forward_bpdu, | |
575 | xbridge->has_in_band, xbridge->enable_recirc, | |
576 | xbridge->variable_length_userdata, | |
53477c2c | 577 | xbridge->max_mpls_depth, xbridge->masked_set_action); |
84f0f298 RW |
578 | LIST_FOR_EACH (xbundle, list_node, &xbridge->xbundles) { |
579 | xlate_xbundle_copy(new_xbridge, xbundle); | |
580 | } | |
581 | ||
582 | /* Copy xports which are not part of a xbundle */ | |
583 | HMAP_FOR_EACH (xport, ofp_node, &xbridge->xports) { | |
584 | if (!xport->xbundle) { | |
585 | xlate_xport_copy(new_xbridge, NULL, xport); | |
586 | } | |
587 | } | |
588 | } | |
589 | ||
590 | static void | |
591 | xlate_xbundle_copy(struct xbridge *xbridge, struct xbundle *xbundle) | |
592 | { | |
593 | struct xport *xport; | |
594 | struct xbundle *new_xbundle = xzalloc(sizeof *xbundle); | |
595 | new_xbundle->ofbundle = xbundle->ofbundle; | |
596 | new_xbundle->xbridge = xbridge; | |
597 | new_xbundle->name = xstrdup(xbundle->name); | |
598 | xlate_xbundle_init(new_xcfg, new_xbundle); | |
599 | ||
600 | xlate_xbundle_set(new_xbundle, xbundle->vlan_mode, | |
601 | xbundle->vlan, xbundle->trunks, | |
602 | xbundle->use_priority_tags, xbundle->bond, xbundle->lacp, | |
603 | xbundle->floodable); | |
604 | LIST_FOR_EACH (xport, bundle_node, &xbundle->xports) { | |
605 | xlate_xport_copy(xbridge, new_xbundle, xport); | |
606 | } | |
607 | } | |
608 | ||
609 | static void | |
610 | xlate_xport_copy(struct xbridge *xbridge, struct xbundle *xbundle, | |
611 | struct xport *xport) | |
612 | { | |
613 | struct skb_priority_to_dscp *pdscp, *new_pdscp; | |
614 | struct xport *new_xport = xzalloc(sizeof *xport); | |
615 | new_xport->ofport = xport->ofport; | |
616 | new_xport->ofp_port = xport->ofp_port; | |
617 | new_xport->xbridge = xbridge; | |
618 | xlate_xport_init(new_xcfg, new_xport); | |
619 | ||
620 | xlate_xport_set(new_xport, xport->odp_port, xport->netdev, xport->cfm, | |
f025bcb7 | 621 | xport->bfd, xport->stp_port_no, xport->rstp_port, |
9efd308e DV |
622 | xport->config, xport->state, xport->is_tunnel, |
623 | xport->may_enable); | |
84f0f298 RW |
624 | |
625 | if (xport->peer) { | |
626 | struct xport *peer = xport_lookup(new_xcfg, xport->peer->ofport); | |
627 | if (peer) { | |
628 | new_xport->peer = peer; | |
629 | new_xport->peer->peer = new_xport; | |
630 | } | |
631 | } | |
632 | ||
633 | if (xbundle) { | |
634 | new_xport->xbundle = xbundle; | |
635 | list_insert(&new_xport->xbundle->xports, &new_xport->bundle_node); | |
636 | } | |
637 | ||
638 | HMAP_FOR_EACH (pdscp, hmap_node, &xport->skb_priorities) { | |
639 | new_pdscp = xmalloc(sizeof *pdscp); | |
640 | new_pdscp->skb_priority = pdscp->skb_priority; | |
641 | new_pdscp->dscp = pdscp->dscp; | |
642 | hmap_insert(&new_xport->skb_priorities, &new_pdscp->hmap_node, | |
643 | hash_int(new_pdscp->skb_priority, 0)); | |
644 | } | |
645 | } | |
646 | ||
647 | /* Sets the current xlate configuration to new_xcfg and frees the old xlate | |
648 | * configuration in xcfgp. | |
649 | * | |
650 | * This needs to be called after editing the xlate configuration. | |
651 | * | |
652 | * Functions that edit the new xlate configuration are | |
653 | * xlate_<ofport/bundle/ofport>_set and xlate_<ofport/bundle/ofport>_remove. | |
654 | * | |
655 | * A sample workflow: | |
656 | * | |
657 | * xlate_txn_start(); | |
658 | * ... | |
659 | * edit_xlate_configuration(); | |
660 | * ... | |
661 | * xlate_txn_commit(); */ | |
46c88433 | 662 | void |
84f0f298 RW |
663 | xlate_txn_commit(void) |
664 | { | |
665 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
666 | ||
667 | ovsrcu_set(&xcfgp, new_xcfg); | |
668 | ovsrcu_postpone(xlate_xcfg_free, xcfg); | |
669 | ||
670 | new_xcfg = NULL; | |
671 | } | |
672 | ||
673 | /* Copies the current xlate configuration in xcfgp to new_xcfg. | |
674 | * | |
675 | * This needs to be called prior to editing the xlate configuration. */ | |
676 | void | |
677 | xlate_txn_start(void) | |
678 | { | |
679 | struct xbridge *xbridge; | |
680 | struct xlate_cfg *xcfg; | |
681 | ||
682 | ovs_assert(!new_xcfg); | |
683 | ||
684 | new_xcfg = xmalloc(sizeof *new_xcfg); | |
685 | hmap_init(&new_xcfg->xbridges); | |
686 | hmap_init(&new_xcfg->xbundles); | |
687 | hmap_init(&new_xcfg->xports); | |
688 | ||
689 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
690 | if (!xcfg) { | |
691 | return; | |
692 | } | |
693 | ||
694 | HMAP_FOR_EACH (xbridge, hmap_node, &xcfg->xbridges) { | |
695 | xlate_xbridge_copy(xbridge); | |
696 | } | |
697 | } | |
698 | ||
699 | ||
700 | static void | |
701 | xlate_xcfg_free(struct xlate_cfg *xcfg) | |
702 | { | |
703 | struct xbridge *xbridge, *next_xbridge; | |
704 | ||
705 | if (!xcfg) { | |
706 | return; | |
707 | } | |
708 | ||
709 | HMAP_FOR_EACH_SAFE (xbridge, next_xbridge, hmap_node, &xcfg->xbridges) { | |
710 | xlate_xbridge_remove(xcfg, xbridge); | |
711 | } | |
712 | ||
713 | hmap_destroy(&xcfg->xbridges); | |
714 | hmap_destroy(&xcfg->xbundles); | |
715 | hmap_destroy(&xcfg->xports); | |
716 | free(xcfg); | |
717 | } | |
718 | ||
719 | void | |
720 | xlate_ofproto_set(struct ofproto_dpif *ofproto, const char *name, | |
721 | struct dpif *dpif, struct rule_dpif *miss_rule, | |
722 | struct rule_dpif *no_packet_in_rule, | |
723 | const struct mac_learning *ml, struct stp *stp, | |
9efd308e | 724 | struct rstp *rstp, const struct mcast_snooping *ms, |
84f0f298 RW |
725 | const struct mbridge *mbridge, |
726 | const struct dpif_sflow *sflow, | |
727 | const struct dpif_ipfix *ipfix, | |
728 | const struct netflow *netflow, enum ofp_config_flags frag, | |
9efd308e | 729 | bool forward_bpdu, bool has_in_band, bool enable_recirc, |
53477c2c JR |
730 | bool variable_length_userdata, size_t max_mpls_depth, |
731 | bool masked_set_action) | |
84f0f298 RW |
732 | { |
733 | struct xbridge *xbridge; | |
734 | ||
735 | ovs_assert(new_xcfg); | |
736 | ||
737 | xbridge = xbridge_lookup(new_xcfg, ofproto); | |
738 | if (!xbridge) { | |
739 | xbridge = xzalloc(sizeof *xbridge); | |
740 | xbridge->ofproto = ofproto; | |
741 | ||
742 | xlate_xbridge_init(new_xcfg, xbridge); | |
743 | } | |
744 | ||
745 | free(xbridge->name); | |
746 | xbridge->name = xstrdup(name); | |
747 | ||
748 | xlate_xbridge_set(xbridge, dpif, miss_rule, no_packet_in_rule, ml, stp, | |
9efd308e DV |
749 | rstp, ms, mbridge, sflow, ipfix, netflow, frag, |
750 | forward_bpdu, has_in_band, enable_recirc, | |
53477c2c JR |
751 | variable_length_userdata, max_mpls_depth, |
752 | masked_set_action); | |
84f0f298 RW |
753 | } |
754 | ||
755 | static void | |
756 | xlate_xbridge_remove(struct xlate_cfg *xcfg, struct xbridge *xbridge) | |
46c88433 | 757 | { |
46c88433 EJ |
758 | struct xbundle *xbundle, *next_xbundle; |
759 | struct xport *xport, *next_xport; | |
760 | ||
761 | if (!xbridge) { | |
762 | return; | |
763 | } | |
764 | ||
765 | HMAP_FOR_EACH_SAFE (xport, next_xport, ofp_node, &xbridge->xports) { | |
84f0f298 | 766 | xlate_xport_remove(xcfg, xport); |
46c88433 EJ |
767 | } |
768 | ||
769 | LIST_FOR_EACH_SAFE (xbundle, next_xbundle, list_node, &xbridge->xbundles) { | |
84f0f298 | 770 | xlate_xbundle_remove(xcfg, xbundle); |
46c88433 EJ |
771 | } |
772 | ||
84f0f298 | 773 | hmap_remove(&xcfg->xbridges, &xbridge->hmap_node); |
795cc5c1 | 774 | mac_learning_unref(xbridge->ml); |
6d95c4e8 | 775 | mcast_snooping_unref(xbridge->ms); |
795cc5c1 EJ |
776 | mbridge_unref(xbridge->mbridge); |
777 | dpif_sflow_unref(xbridge->sflow); | |
778 | dpif_ipfix_unref(xbridge->ipfix); | |
779 | stp_unref(xbridge->stp); | |
9efd308e | 780 | rstp_unref(xbridge->rstp); |
795cc5c1 | 781 | hmap_destroy(&xbridge->xports); |
46c88433 EJ |
782 | free(xbridge->name); |
783 | free(xbridge); | |
784 | } | |
785 | ||
84f0f298 RW |
786 | void |
787 | xlate_remove_ofproto(struct ofproto_dpif *ofproto) | |
788 | { | |
789 | struct xbridge *xbridge; | |
790 | ||
791 | ovs_assert(new_xcfg); | |
792 | ||
793 | xbridge = xbridge_lookup(new_xcfg, ofproto); | |
794 | xlate_xbridge_remove(new_xcfg, xbridge); | |
795 | } | |
796 | ||
46c88433 EJ |
797 | void |
798 | xlate_bundle_set(struct ofproto_dpif *ofproto, struct ofbundle *ofbundle, | |
799 | const char *name, enum port_vlan_mode vlan_mode, int vlan, | |
800 | unsigned long *trunks, bool use_priority_tags, | |
801 | const struct bond *bond, const struct lacp *lacp, | |
802 | bool floodable) | |
803 | { | |
84f0f298 | 804 | struct xbundle *xbundle; |
46c88433 | 805 | |
84f0f298 RW |
806 | ovs_assert(new_xcfg); |
807 | ||
808 | xbundle = xbundle_lookup(new_xcfg, ofbundle); | |
46c88433 EJ |
809 | if (!xbundle) { |
810 | xbundle = xzalloc(sizeof *xbundle); | |
811 | xbundle->ofbundle = ofbundle; | |
84f0f298 | 812 | xbundle->xbridge = xbridge_lookup(new_xcfg, ofproto); |
46c88433 | 813 | |
84f0f298 | 814 | xlate_xbundle_init(new_xcfg, xbundle); |
46c88433 EJ |
815 | } |
816 | ||
46c88433 EJ |
817 | free(xbundle->name); |
818 | xbundle->name = xstrdup(name); | |
819 | ||
84f0f298 RW |
820 | xlate_xbundle_set(xbundle, vlan_mode, vlan, trunks, |
821 | use_priority_tags, bond, lacp, floodable); | |
46c88433 EJ |
822 | } |
823 | ||
84f0f298 RW |
824 | static void |
825 | xlate_xbundle_remove(struct xlate_cfg *xcfg, struct xbundle *xbundle) | |
46c88433 | 826 | { |
46c88433 EJ |
827 | struct xport *xport, *next; |
828 | ||
829 | if (!xbundle) { | |
830 | return; | |
831 | } | |
832 | ||
833 | LIST_FOR_EACH_SAFE (xport, next, bundle_node, &xbundle->xports) { | |
834 | list_remove(&xport->bundle_node); | |
835 | xport->xbundle = NULL; | |
836 | } | |
837 | ||
84f0f298 | 838 | hmap_remove(&xcfg->xbundles, &xbundle->hmap_node); |
46c88433 EJ |
839 | list_remove(&xbundle->list_node); |
840 | bond_unref(xbundle->bond); | |
841 | lacp_unref(xbundle->lacp); | |
842 | free(xbundle->name); | |
843 | free(xbundle); | |
844 | } | |
845 | ||
84f0f298 RW |
846 | void |
847 | xlate_bundle_remove(struct ofbundle *ofbundle) | |
848 | { | |
849 | struct xbundle *xbundle; | |
850 | ||
851 | ovs_assert(new_xcfg); | |
852 | ||
853 | xbundle = xbundle_lookup(new_xcfg, ofbundle); | |
854 | xlate_xbundle_remove(new_xcfg, xbundle); | |
855 | } | |
856 | ||
46c88433 EJ |
857 | void |
858 | xlate_ofport_set(struct ofproto_dpif *ofproto, struct ofbundle *ofbundle, | |
859 | struct ofport_dpif *ofport, ofp_port_t ofp_port, | |
860 | odp_port_t odp_port, const struct netdev *netdev, | |
861 | const struct cfm *cfm, const struct bfd *bfd, | |
f025bcb7 JR |
862 | struct ofport_dpif *peer, int stp_port_no, |
863 | const struct rstp_port *rstp_port, | |
55954f6e | 864 | const struct ofproto_port_queue *qdscp_list, size_t n_qdscp, |
dd8cd4b4 SH |
865 | enum ofputil_port_config config, |
866 | enum ofputil_port_state state, bool is_tunnel, | |
9d189a50 | 867 | bool may_enable) |
46c88433 | 868 | { |
55954f6e | 869 | size_t i; |
84f0f298 RW |
870 | struct xport *xport; |
871 | ||
872 | ovs_assert(new_xcfg); | |
46c88433 | 873 | |
84f0f298 | 874 | xport = xport_lookup(new_xcfg, ofport); |
46c88433 EJ |
875 | if (!xport) { |
876 | xport = xzalloc(sizeof *xport); | |
877 | xport->ofport = ofport; | |
84f0f298 | 878 | xport->xbridge = xbridge_lookup(new_xcfg, ofproto); |
46c88433 EJ |
879 | xport->ofp_port = ofp_port; |
880 | ||
84f0f298 | 881 | xlate_xport_init(new_xcfg, xport); |
46c88433 EJ |
882 | } |
883 | ||
884 | ovs_assert(xport->ofp_port == ofp_port); | |
885 | ||
9efd308e | 886 | xlate_xport_set(xport, odp_port, netdev, cfm, bfd, stp_port_no, |
f025bcb7 | 887 | rstp_port, config, state, is_tunnel, may_enable); |
46c88433 EJ |
888 | |
889 | if (xport->peer) { | |
890 | xport->peer->peer = NULL; | |
891 | } | |
84f0f298 | 892 | xport->peer = xport_lookup(new_xcfg, peer); |
46c88433 EJ |
893 | if (xport->peer) { |
894 | xport->peer->peer = xport; | |
895 | } | |
896 | ||
897 | if (xport->xbundle) { | |
898 | list_remove(&xport->bundle_node); | |
899 | } | |
84f0f298 | 900 | xport->xbundle = xbundle_lookup(new_xcfg, ofbundle); |
46c88433 EJ |
901 | if (xport->xbundle) { |
902 | list_insert(&xport->xbundle->xports, &xport->bundle_node); | |
903 | } | |
55954f6e EJ |
904 | |
905 | clear_skb_priorities(xport); | |
906 | for (i = 0; i < n_qdscp; i++) { | |
907 | struct skb_priority_to_dscp *pdscp; | |
908 | uint32_t skb_priority; | |
909 | ||
89a8a7f0 EJ |
910 | if (dpif_queue_to_priority(xport->xbridge->dpif, qdscp_list[i].queue, |
911 | &skb_priority)) { | |
55954f6e EJ |
912 | continue; |
913 | } | |
914 | ||
915 | pdscp = xmalloc(sizeof *pdscp); | |
916 | pdscp->skb_priority = skb_priority; | |
917 | pdscp->dscp = (qdscp_list[i].dscp << 2) & IP_DSCP_MASK; | |
918 | hmap_insert(&xport->skb_priorities, &pdscp->hmap_node, | |
919 | hash_int(pdscp->skb_priority, 0)); | |
920 | } | |
46c88433 EJ |
921 | } |
922 | ||
84f0f298 RW |
923 | static void |
924 | xlate_xport_remove(struct xlate_cfg *xcfg, struct xport *xport) | |
46c88433 | 925 | { |
46c88433 EJ |
926 | if (!xport) { |
927 | return; | |
928 | } | |
929 | ||
930 | if (xport->peer) { | |
931 | xport->peer->peer = NULL; | |
932 | xport->peer = NULL; | |
933 | } | |
934 | ||
e621a12d EJ |
935 | if (xport->xbundle) { |
936 | list_remove(&xport->bundle_node); | |
937 | } | |
938 | ||
55954f6e EJ |
939 | clear_skb_priorities(xport); |
940 | hmap_destroy(&xport->skb_priorities); | |
941 | ||
84f0f298 | 942 | hmap_remove(&xcfg->xports, &xport->hmap_node); |
46c88433 EJ |
943 | hmap_remove(&xport->xbridge->xports, &xport->ofp_node); |
944 | ||
945 | netdev_close(xport->netdev); | |
f025bcb7 | 946 | rstp_port_unref(xport->rstp_port); |
46c88433 EJ |
947 | cfm_unref(xport->cfm); |
948 | bfd_unref(xport->bfd); | |
949 | free(xport); | |
950 | } | |
951 | ||
84f0f298 RW |
952 | void |
953 | xlate_ofport_remove(struct ofport_dpif *ofport) | |
954 | { | |
955 | struct xport *xport; | |
956 | ||
957 | ovs_assert(new_xcfg); | |
958 | ||
959 | xport = xport_lookup(new_xcfg, ofport); | |
960 | xlate_xport_remove(new_xcfg, xport); | |
961 | } | |
962 | ||
ef377a58 JR |
963 | /* Given a datapath and flow metadata ('backer', and 'flow' respectively) |
964 | * returns the corresponding struct xport, or NULL if none is found. */ | |
965 | static struct xport * | |
966 | xlate_lookup_xport(const struct dpif_backer *backer, const struct flow *flow) | |
967 | { | |
968 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
969 | ||
970 | return xport_lookup(xcfg, tnl_port_should_receive(flow) | |
971 | ? tnl_port_receive(flow) | |
972 | : odp_port_to_ofport(backer, flow->in_port.odp_port)); | |
973 | } | |
974 | ||
975 | static struct ofproto_dpif * | |
976 | xlate_lookup_ofproto_(const struct dpif_backer *backer, const struct flow *flow, | |
977 | ofp_port_t *ofp_in_port, const struct xport **xportp) | |
978 | { | |
979 | const struct xport *xport; | |
980 | ||
981 | *xportp = xport = xlate_lookup_xport(backer, flow); | |
982 | ||
983 | if (xport) { | |
984 | if (ofp_in_port) { | |
985 | *ofp_in_port = xport->ofp_port; | |
986 | } | |
987 | return xport->xbridge->ofproto; | |
988 | } | |
989 | ||
990 | return NULL; | |
991 | } | |
992 | ||
993 | /* Given a datapath and flow metadata ('backer', and 'flow' respectively) | |
994 | * returns the corresponding struct ofproto_dpif and OpenFlow port number. */ | |
995 | struct ofproto_dpif * | |
996 | xlate_lookup_ofproto(const struct dpif_backer *backer, const struct flow *flow, | |
997 | ofp_port_t *ofp_in_port) | |
998 | { | |
999 | const struct xport *xport; | |
1000 | ||
1001 | return xlate_lookup_ofproto_(backer, flow, ofp_in_port, &xport); | |
1002 | } | |
1003 | ||
cc377352 | 1004 | /* Given a datapath and flow metadata ('backer', and 'flow' respectively), |
ef377a58 | 1005 | * optionally populates 'ofproto' with the ofproto_dpif, 'ofp_in_port' with the |
cc377352 | 1006 | * openflow in_port, and 'ipfix', 'sflow', and 'netflow' with the appropriate |
dcc2c6cd JR |
1007 | * handles for those protocols if they're enabled. Caller may use the returned |
1008 | * pointers until quiescing, for longer term use additional references must | |
1009 | * be taken. | |
8449c4d6 | 1010 | * |
ef377a58 | 1011 | * '*ofp_in_port' is set to OFPP_NONE if 'flow''s in_port does not exist. |
8449c4d6 | 1012 | * |
ef377a58 JR |
1013 | * Returns 0 if successful, ENODEV if the parsed flow has no associated ofport. |
1014 | */ | |
8449c4d6 | 1015 | int |
5c476ea3 JR |
1016 | xlate_lookup(const struct dpif_backer *backer, const struct flow *flow, |
1017 | struct ofproto_dpif **ofprotop, struct dpif_ipfix **ipfix, | |
1018 | struct dpif_sflow **sflow, struct netflow **netflow, | |
1019 | ofp_port_t *ofp_in_port) | |
8449c4d6 | 1020 | { |
ef377a58 | 1021 | struct ofproto_dpif *ofproto; |
84f0f298 | 1022 | const struct xport *xport; |
8449c4d6 | 1023 | |
ef377a58 | 1024 | ofproto = xlate_lookup_ofproto_(backer, flow, ofp_in_port, &xport); |
8449c4d6 | 1025 | |
ef377a58 JR |
1026 | if (ofp_in_port && !xport) { |
1027 | *ofp_in_port = OFPP_NONE; | |
8449c4d6 EJ |
1028 | } |
1029 | ||
cc377352 EJ |
1030 | if (!xport) { |
1031 | return ENODEV; | |
8449c4d6 | 1032 | } |
8449c4d6 | 1033 | |
ef377a58 JR |
1034 | if (ofprotop) { |
1035 | *ofprotop = ofproto; | |
8449c4d6 EJ |
1036 | } |
1037 | ||
1dfdb9b3 | 1038 | if (ipfix) { |
dcc2c6cd | 1039 | *ipfix = xport->xbridge->ipfix; |
1dfdb9b3 EJ |
1040 | } |
1041 | ||
1042 | if (sflow) { | |
dcc2c6cd | 1043 | *sflow = xport->xbridge->sflow; |
1dfdb9b3 EJ |
1044 | } |
1045 | ||
1046 | if (netflow) { | |
dcc2c6cd | 1047 | *netflow = xport->xbridge->netflow; |
1dfdb9b3 | 1048 | } |
cc377352 | 1049 | return 0; |
8449c4d6 EJ |
1050 | } |
1051 | ||
46c88433 | 1052 | static struct xbridge * |
84f0f298 | 1053 | xbridge_lookup(struct xlate_cfg *xcfg, const struct ofproto_dpif *ofproto) |
46c88433 | 1054 | { |
84f0f298 | 1055 | struct hmap *xbridges; |
46c88433 EJ |
1056 | struct xbridge *xbridge; |
1057 | ||
84f0f298 | 1058 | if (!ofproto || !xcfg) { |
5e6af486 EJ |
1059 | return NULL; |
1060 | } | |
1061 | ||
84f0f298 RW |
1062 | xbridges = &xcfg->xbridges; |
1063 | ||
46c88433 | 1064 | HMAP_FOR_EACH_IN_BUCKET (xbridge, hmap_node, hash_pointer(ofproto, 0), |
84f0f298 | 1065 | xbridges) { |
46c88433 EJ |
1066 | if (xbridge->ofproto == ofproto) { |
1067 | return xbridge; | |
1068 | } | |
1069 | } | |
1070 | return NULL; | |
1071 | } | |
1072 | ||
1073 | static struct xbundle * | |
84f0f298 | 1074 | xbundle_lookup(struct xlate_cfg *xcfg, const struct ofbundle *ofbundle) |
46c88433 | 1075 | { |
84f0f298 | 1076 | struct hmap *xbundles; |
46c88433 EJ |
1077 | struct xbundle *xbundle; |
1078 | ||
84f0f298 | 1079 | if (!ofbundle || !xcfg) { |
5e6af486 EJ |
1080 | return NULL; |
1081 | } | |
1082 | ||
84f0f298 RW |
1083 | xbundles = &xcfg->xbundles; |
1084 | ||
46c88433 | 1085 | HMAP_FOR_EACH_IN_BUCKET (xbundle, hmap_node, hash_pointer(ofbundle, 0), |
84f0f298 | 1086 | xbundles) { |
46c88433 EJ |
1087 | if (xbundle->ofbundle == ofbundle) { |
1088 | return xbundle; | |
1089 | } | |
1090 | } | |
1091 | return NULL; | |
1092 | } | |
1093 | ||
1094 | static struct xport * | |
84f0f298 | 1095 | xport_lookup(struct xlate_cfg *xcfg, const struct ofport_dpif *ofport) |
46c88433 | 1096 | { |
84f0f298 | 1097 | struct hmap *xports; |
46c88433 EJ |
1098 | struct xport *xport; |
1099 | ||
84f0f298 | 1100 | if (!ofport || !xcfg) { |
5e6af486 EJ |
1101 | return NULL; |
1102 | } | |
1103 | ||
84f0f298 RW |
1104 | xports = &xcfg->xports; |
1105 | ||
46c88433 | 1106 | HMAP_FOR_EACH_IN_BUCKET (xport, hmap_node, hash_pointer(ofport, 0), |
84f0f298 | 1107 | xports) { |
46c88433 EJ |
1108 | if (xport->ofport == ofport) { |
1109 | return xport; | |
1110 | } | |
1111 | } | |
1112 | return NULL; | |
1113 | } | |
1114 | ||
40085e56 EJ |
1115 | static struct stp_port * |
1116 | xport_get_stp_port(const struct xport *xport) | |
1117 | { | |
92cf817b | 1118 | return xport->xbridge->stp && xport->stp_port_no != -1 |
40085e56 EJ |
1119 | ? stp_get_port(xport->xbridge->stp, xport->stp_port_no) |
1120 | : NULL; | |
1121 | } | |
9d189a50 | 1122 | |
0d1cee12 | 1123 | static bool |
9d189a50 EJ |
1124 | xport_stp_learn_state(const struct xport *xport) |
1125 | { | |
40085e56 EJ |
1126 | struct stp_port *sp = xport_get_stp_port(xport); |
1127 | return stp_learn_in_state(sp ? stp_port_get_state(sp) : STP_DISABLED); | |
9d189a50 EJ |
1128 | } |
1129 | ||
1130 | static bool | |
1131 | xport_stp_forward_state(const struct xport *xport) | |
1132 | { | |
40085e56 EJ |
1133 | struct stp_port *sp = xport_get_stp_port(xport); |
1134 | return stp_forward_in_state(sp ? stp_port_get_state(sp) : STP_DISABLED); | |
9d189a50 EJ |
1135 | } |
1136 | ||
0d1cee12 | 1137 | static bool |
bacdb85a | 1138 | xport_stp_should_forward_bpdu(const struct xport *xport) |
0d1cee12 K |
1139 | { |
1140 | struct stp_port *sp = xport_get_stp_port(xport); | |
bacdb85a | 1141 | return stp_should_forward_bpdu(sp ? stp_port_get_state(sp) : STP_DISABLED); |
0d1cee12 K |
1142 | } |
1143 | ||
9d189a50 EJ |
1144 | /* Returns true if STP should process 'flow'. Sets fields in 'wc' that |
1145 | * were used to make the determination.*/ | |
1146 | static bool | |
1147 | stp_should_process_flow(const struct flow *flow, struct flow_wildcards *wc) | |
1148 | { | |
bbbca389 | 1149 | /* is_stp() also checks dl_type, but dl_type is always set in 'wc'. */ |
9d189a50 | 1150 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); |
bbbca389 | 1151 | return is_stp(flow); |
9d189a50 EJ |
1152 | } |
1153 | ||
1154 | static void | |
1155 | stp_process_packet(const struct xport *xport, const struct ofpbuf *packet) | |
1156 | { | |
40085e56 | 1157 | struct stp_port *sp = xport_get_stp_port(xport); |
9d189a50 | 1158 | struct ofpbuf payload = *packet; |
1f317cb5 | 1159 | struct eth_header *eth = ofpbuf_data(&payload); |
9d189a50 EJ |
1160 | |
1161 | /* Sink packets on ports that have STP disabled when the bridge has | |
1162 | * STP enabled. */ | |
1163 | if (!sp || stp_port_get_state(sp) == STP_DISABLED) { | |
1164 | return; | |
1165 | } | |
1166 | ||
1167 | /* Trim off padding on payload. */ | |
1f317cb5 PS |
1168 | if (ofpbuf_size(&payload) > ntohs(eth->eth_type) + ETH_HEADER_LEN) { |
1169 | ofpbuf_set_size(&payload, ntohs(eth->eth_type) + ETH_HEADER_LEN); | |
9d189a50 EJ |
1170 | } |
1171 | ||
1172 | if (ofpbuf_try_pull(&payload, ETH_HEADER_LEN + LLC_HEADER_LEN)) { | |
1f317cb5 | 1173 | stp_received_bpdu(sp, ofpbuf_data(&payload), ofpbuf_size(&payload)); |
9d189a50 EJ |
1174 | } |
1175 | } | |
1176 | ||
f025bcb7 JR |
1177 | static enum rstp_state |
1178 | xport_get_rstp_port_state(const struct xport *xport) | |
9efd308e | 1179 | { |
f025bcb7 JR |
1180 | return xport->rstp_port |
1181 | ? rstp_port_get_state(xport->rstp_port) | |
1182 | : RSTP_DISABLED; | |
9efd308e DV |
1183 | } |
1184 | ||
1185 | static bool | |
1186 | xport_rstp_learn_state(const struct xport *xport) | |
1187 | { | |
f025bcb7 | 1188 | return rstp_learn_in_state(xport_get_rstp_port_state(xport)); |
9efd308e DV |
1189 | } |
1190 | ||
1191 | static bool | |
1192 | xport_rstp_forward_state(const struct xport *xport) | |
1193 | { | |
f025bcb7 | 1194 | return rstp_forward_in_state(xport_get_rstp_port_state(xport)); |
9efd308e DV |
1195 | } |
1196 | ||
1197 | static bool | |
1198 | xport_rstp_should_manage_bpdu(const struct xport *xport) | |
1199 | { | |
f025bcb7 | 1200 | return rstp_should_manage_bpdu(xport_get_rstp_port_state(xport)); |
9efd308e DV |
1201 | } |
1202 | ||
1203 | static void | |
1204 | rstp_process_packet(const struct xport *xport, const struct ofpbuf *packet) | |
1205 | { | |
9efd308e DV |
1206 | struct ofpbuf payload = *packet; |
1207 | struct eth_header *eth = ofpbuf_data(&payload); | |
1208 | ||
f025bcb7 JR |
1209 | /* Sink packets on ports that have no RSTP. */ |
1210 | if (!xport->rstp_port) { | |
9efd308e DV |
1211 | return; |
1212 | } | |
1213 | ||
1214 | /* Trim off padding on payload. */ | |
1215 | if (ofpbuf_size(&payload) > ntohs(eth->eth_type) + ETH_HEADER_LEN) { | |
1216 | ofpbuf_set_size(&payload, ntohs(eth->eth_type) + ETH_HEADER_LEN); | |
1217 | } | |
1218 | ||
1219 | if (ofpbuf_try_pull(&payload, ETH_HEADER_LEN + LLC_HEADER_LEN)) { | |
f025bcb7 JR |
1220 | rstp_port_received_bpdu(xport->rstp_port, ofpbuf_data(&payload), |
1221 | ofpbuf_size(&payload)); | |
9efd308e DV |
1222 | } |
1223 | } | |
1224 | ||
46c88433 EJ |
1225 | static struct xport * |
1226 | get_ofp_port(const struct xbridge *xbridge, ofp_port_t ofp_port) | |
1227 | { | |
1228 | struct xport *xport; | |
1229 | ||
1230 | HMAP_FOR_EACH_IN_BUCKET (xport, ofp_node, hash_ofp_port(ofp_port), | |
1231 | &xbridge->xports) { | |
1232 | if (xport->ofp_port == ofp_port) { | |
1233 | return xport; | |
1234 | } | |
1235 | } | |
1236 | return NULL; | |
1237 | } | |
1238 | ||
1239 | static odp_port_t | |
1240 | ofp_port_to_odp_port(const struct xbridge *xbridge, ofp_port_t ofp_port) | |
1241 | { | |
1242 | const struct xport *xport = get_ofp_port(xbridge, ofp_port); | |
1243 | return xport ? xport->odp_port : ODPP_NONE; | |
1244 | } | |
1245 | ||
dd8cd4b4 SH |
1246 | static bool |
1247 | odp_port_is_alive(const struct xlate_ctx *ctx, ofp_port_t ofp_port) | |
1248 | { | |
1249 | struct xport *xport; | |
1250 | ||
1251 | xport = get_ofp_port(ctx->xbridge, ofp_port); | |
1252 | if (!xport || xport->config & OFPUTIL_PC_PORT_DOWN || | |
1253 | xport->state & OFPUTIL_PS_LINK_DOWN) { | |
1254 | return false; | |
1255 | } | |
1256 | ||
1257 | return true; | |
1258 | } | |
1259 | ||
1e684d7d | 1260 | static struct ofputil_bucket * |
dd8cd4b4 SH |
1261 | group_first_live_bucket(const struct xlate_ctx *, const struct group_dpif *, |
1262 | int depth); | |
1263 | ||
1264 | static bool | |
1265 | group_is_alive(const struct xlate_ctx *ctx, uint32_t group_id, int depth) | |
1266 | { | |
1267 | struct group_dpif *group; | |
dd8cd4b4 | 1268 | |
dc25893e AZ |
1269 | if (group_dpif_lookup(ctx->xbridge->ofproto, group_id, &group)) { |
1270 | struct ofputil_bucket *bucket; | |
dd8cd4b4 | 1271 | |
dc25893e AZ |
1272 | bucket = group_first_live_bucket(ctx, group, depth); |
1273 | group_dpif_unref(group); | |
1274 | return bucket == NULL; | |
1275 | } | |
dd8cd4b4 | 1276 | |
dc25893e | 1277 | return false; |
dd8cd4b4 SH |
1278 | } |
1279 | ||
1280 | #define MAX_LIVENESS_RECURSION 128 /* Arbitrary limit */ | |
1281 | ||
1282 | static bool | |
1283 | bucket_is_alive(const struct xlate_ctx *ctx, | |
1e684d7d | 1284 | struct ofputil_bucket *bucket, int depth) |
dd8cd4b4 SH |
1285 | { |
1286 | if (depth >= MAX_LIVENESS_RECURSION) { | |
1287 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); | |
1288 | ||
1289 | VLOG_WARN_RL(&rl, "bucket chaining exceeded %d links", | |
1290 | MAX_LIVENESS_RECURSION); | |
1291 | return false; | |
1292 | } | |
1293 | ||
fdb1999b AZ |
1294 | return (!ofputil_bucket_has_liveness(bucket) |
1295 | || (bucket->watch_port != OFPP_ANY | |
1296 | && odp_port_is_alive(ctx, bucket->watch_port)) | |
1297 | || (bucket->watch_group != OFPG_ANY | |
1298 | && group_is_alive(ctx, bucket->watch_group, depth + 1))); | |
dd8cd4b4 SH |
1299 | } |
1300 | ||
1e684d7d | 1301 | static struct ofputil_bucket * |
dd8cd4b4 SH |
1302 | group_first_live_bucket(const struct xlate_ctx *ctx, |
1303 | const struct group_dpif *group, int depth) | |
1304 | { | |
1305 | struct ofputil_bucket *bucket; | |
1306 | const struct list *buckets; | |
1307 | ||
1308 | group_dpif_get_buckets(group, &buckets); | |
1309 | LIST_FOR_EACH (bucket, list_node, buckets) { | |
1310 | if (bucket_is_alive(ctx, bucket, depth)) { | |
1311 | return bucket; | |
1312 | } | |
1313 | } | |
1314 | ||
1315 | return NULL; | |
1316 | } | |
1317 | ||
1e684d7d | 1318 | static struct ofputil_bucket * |
fe7e5749 SH |
1319 | group_best_live_bucket(const struct xlate_ctx *ctx, |
1320 | const struct group_dpif *group, | |
1321 | uint32_t basis) | |
1322 | { | |
1e684d7d | 1323 | struct ofputil_bucket *best_bucket = NULL; |
fe7e5749 SH |
1324 | uint32_t best_score = 0; |
1325 | int i = 0; | |
1326 | ||
1e684d7d | 1327 | struct ofputil_bucket *bucket; |
fe7e5749 SH |
1328 | const struct list *buckets; |
1329 | ||
1330 | group_dpif_get_buckets(group, &buckets); | |
1331 | LIST_FOR_EACH (bucket, list_node, buckets) { | |
1332 | if (bucket_is_alive(ctx, bucket, 0)) { | |
7cb279c2 | 1333 | uint32_t score = (hash_int(i, basis) & 0xffff) * bucket->weight; |
fe7e5749 SH |
1334 | if (score >= best_score) { |
1335 | best_bucket = bucket; | |
1336 | best_score = score; | |
1337 | } | |
1338 | } | |
1339 | i++; | |
1340 | } | |
1341 | ||
1342 | return best_bucket; | |
1343 | } | |
1344 | ||
9583bc14 | 1345 | static bool |
46c88433 | 1346 | xbundle_trunks_vlan(const struct xbundle *bundle, uint16_t vlan) |
9583bc14 EJ |
1347 | { |
1348 | return (bundle->vlan_mode != PORT_VLAN_ACCESS | |
1349 | && (!bundle->trunks || bitmap_is_set(bundle->trunks, vlan))); | |
1350 | } | |
1351 | ||
1352 | static bool | |
46c88433 EJ |
1353 | xbundle_includes_vlan(const struct xbundle *xbundle, uint16_t vlan) |
1354 | { | |
1355 | return vlan == xbundle->vlan || xbundle_trunks_vlan(xbundle, vlan); | |
1356 | } | |
1357 | ||
1358 | static mirror_mask_t | |
1359 | xbundle_mirror_out(const struct xbridge *xbridge, struct xbundle *xbundle) | |
1360 | { | |
1361 | return xbundle != &ofpp_none_bundle | |
1362 | ? mirror_bundle_out(xbridge->mbridge, xbundle->ofbundle) | |
1363 | : 0; | |
1364 | } | |
1365 | ||
1366 | static mirror_mask_t | |
1367 | xbundle_mirror_src(const struct xbridge *xbridge, struct xbundle *xbundle) | |
9583bc14 | 1368 | { |
46c88433 EJ |
1369 | return xbundle != &ofpp_none_bundle |
1370 | ? mirror_bundle_src(xbridge->mbridge, xbundle->ofbundle) | |
1371 | : 0; | |
9583bc14 EJ |
1372 | } |
1373 | ||
46c88433 EJ |
1374 | static mirror_mask_t |
1375 | xbundle_mirror_dst(const struct xbridge *xbridge, struct xbundle *xbundle) | |
9583bc14 | 1376 | { |
46c88433 EJ |
1377 | return xbundle != &ofpp_none_bundle |
1378 | ? mirror_bundle_dst(xbridge->mbridge, xbundle->ofbundle) | |
1379 | : 0; | |
1380 | } | |
1381 | ||
1382 | static struct xbundle * | |
1383 | lookup_input_bundle(const struct xbridge *xbridge, ofp_port_t in_port, | |
1384 | bool warn, struct xport **in_xportp) | |
1385 | { | |
1386 | struct xport *xport; | |
9583bc14 EJ |
1387 | |
1388 | /* Find the port and bundle for the received packet. */ | |
46c88433 EJ |
1389 | xport = get_ofp_port(xbridge, in_port); |
1390 | if (in_xportp) { | |
1391 | *in_xportp = xport; | |
9583bc14 | 1392 | } |
46c88433 EJ |
1393 | if (xport && xport->xbundle) { |
1394 | return xport->xbundle; | |
9583bc14 EJ |
1395 | } |
1396 | ||
6362203b YT |
1397 | /* Special-case OFPP_NONE (OF1.0) and OFPP_CONTROLLER (OF1.1+), |
1398 | * which a controller may use as the ingress port for traffic that | |
1399 | * it is sourcing. */ | |
1400 | if (in_port == OFPP_CONTROLLER || in_port == OFPP_NONE) { | |
9583bc14 EJ |
1401 | return &ofpp_none_bundle; |
1402 | } | |
1403 | ||
1404 | /* Odd. A few possible reasons here: | |
1405 | * | |
1406 | * - We deleted a port but there are still a few packets queued up | |
1407 | * from it. | |
1408 | * | |
1409 | * - Someone externally added a port (e.g. "ovs-dpctl add-if") that | |
1410 | * we don't know about. | |
1411 | * | |
1412 | * - The ofproto client didn't configure the port as part of a bundle. | |
1413 | * This is particularly likely to happen if a packet was received on the | |
1414 | * port after it was created, but before the client had a chance to | |
1415 | * configure its bundle. | |
1416 | */ | |
1417 | if (warn) { | |
1418 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
1419 | ||
1420 | VLOG_WARN_RL(&rl, "bridge %s: received packet on unknown " | |
46c88433 | 1421 | "port %"PRIu16, xbridge->name, in_port); |
9583bc14 EJ |
1422 | } |
1423 | return NULL; | |
1424 | } | |
1425 | ||
1426 | static void | |
1427 | add_mirror_actions(struct xlate_ctx *ctx, const struct flow *orig_flow) | |
1428 | { | |
46c88433 | 1429 | const struct xbridge *xbridge = ctx->xbridge; |
9583bc14 | 1430 | mirror_mask_t mirrors; |
46c88433 | 1431 | struct xbundle *in_xbundle; |
9583bc14 EJ |
1432 | uint16_t vlan; |
1433 | uint16_t vid; | |
cdf5d3a5 EJ |
1434 | |
1435 | mirrors = ctx->xout->mirrors; | |
1436 | ctx->xout->mirrors = 0; | |
9583bc14 | 1437 | |
46c88433 EJ |
1438 | in_xbundle = lookup_input_bundle(xbridge, orig_flow->in_port.ofp_port, |
1439 | ctx->xin->packet != NULL, NULL); | |
1440 | if (!in_xbundle) { | |
9583bc14 EJ |
1441 | return; |
1442 | } | |
46c88433 | 1443 | mirrors |= xbundle_mirror_src(xbridge, in_xbundle); |
9583bc14 EJ |
1444 | |
1445 | /* Drop frames on bundles reserved for mirroring. */ | |
46c88433 | 1446 | if (xbundle_mirror_out(xbridge, in_xbundle)) { |
9583bc14 EJ |
1447 | if (ctx->xin->packet != NULL) { |
1448 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
1449 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet received on port " | |
1450 | "%s, which is reserved exclusively for mirroring", | |
46c88433 | 1451 | ctx->xbridge->name, in_xbundle->name); |
9583bc14 | 1452 | } |
cc377352 | 1453 | ofpbuf_clear(ctx->xout->odp_actions); |
9583bc14 EJ |
1454 | return; |
1455 | } | |
1456 | ||
1457 | /* Check VLAN. */ | |
1458 | vid = vlan_tci_to_vid(orig_flow->vlan_tci); | |
46c88433 | 1459 | if (!input_vid_is_valid(vid, in_xbundle, ctx->xin->packet != NULL)) { |
9583bc14 EJ |
1460 | return; |
1461 | } | |
46c88433 | 1462 | vlan = input_vid_to_vlan(in_xbundle, vid); |
9583bc14 | 1463 | |
9583bc14 EJ |
1464 | if (!mirrors) { |
1465 | return; | |
1466 | } | |
1467 | ||
1468 | /* Restore the original packet before adding the mirror actions. */ | |
1469 | ctx->xin->flow = *orig_flow; | |
1470 | ||
1471 | while (mirrors) { | |
ec7ceaed EJ |
1472 | mirror_mask_t dup_mirrors; |
1473 | struct ofbundle *out; | |
1474 | unsigned long *vlans; | |
1475 | bool vlan_mirrored; | |
1476 | bool has_mirror; | |
1477 | int out_vlan; | |
1478 | ||
4b6ab2b0 | 1479 | has_mirror = mirror_get(xbridge->mbridge, raw_ctz(mirrors), |
ec7ceaed EJ |
1480 | &vlans, &dup_mirrors, &out, &out_vlan); |
1481 | ovs_assert(has_mirror); | |
1482 | ||
1483 | if (vlans) { | |
9583bc14 EJ |
1484 | ctx->xout->wc.masks.vlan_tci |= htons(VLAN_CFI | VLAN_VID_MASK); |
1485 | } | |
ec7ceaed EJ |
1486 | vlan_mirrored = !vlans || bitmap_is_set(vlans, vlan); |
1487 | free(vlans); | |
9583bc14 | 1488 | |
ec7ceaed | 1489 | if (!vlan_mirrored) { |
9583bc14 EJ |
1490 | mirrors = zero_rightmost_1bit(mirrors); |
1491 | continue; | |
1492 | } | |
1493 | ||
ec7ceaed EJ |
1494 | mirrors &= ~dup_mirrors; |
1495 | ctx->xout->mirrors |= dup_mirrors; | |
1496 | if (out) { | |
84f0f298 RW |
1497 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
1498 | struct xbundle *out_xbundle = xbundle_lookup(xcfg, out); | |
46c88433 EJ |
1499 | if (out_xbundle) { |
1500 | output_normal(ctx, out_xbundle, vlan); | |
1501 | } | |
ec7ceaed | 1502 | } else if (vlan != out_vlan |
9583bc14 | 1503 | && !eth_addr_is_reserved(orig_flow->dl_dst)) { |
46c88433 | 1504 | struct xbundle *xbundle; |
9583bc14 | 1505 | |
46c88433 EJ |
1506 | LIST_FOR_EACH (xbundle, list_node, &xbridge->xbundles) { |
1507 | if (xbundle_includes_vlan(xbundle, out_vlan) | |
1508 | && !xbundle_mirror_out(xbridge, xbundle)) { | |
1509 | output_normal(ctx, xbundle, out_vlan); | |
9583bc14 EJ |
1510 | } |
1511 | } | |
1512 | } | |
1513 | } | |
1514 | } | |
1515 | ||
1516 | /* Given 'vid', the VID obtained from the 802.1Q header that was received as | |
46c88433 | 1517 | * part of a packet (specify 0 if there was no 802.1Q header), and 'in_xbundle', |
9583bc14 EJ |
1518 | * the bundle on which the packet was received, returns the VLAN to which the |
1519 | * packet belongs. | |
1520 | * | |
1521 | * Both 'vid' and the return value are in the range 0...4095. */ | |
1522 | static uint16_t | |
46c88433 | 1523 | input_vid_to_vlan(const struct xbundle *in_xbundle, uint16_t vid) |
9583bc14 | 1524 | { |
46c88433 | 1525 | switch (in_xbundle->vlan_mode) { |
9583bc14 | 1526 | case PORT_VLAN_ACCESS: |
46c88433 | 1527 | return in_xbundle->vlan; |
9583bc14 EJ |
1528 | break; |
1529 | ||
1530 | case PORT_VLAN_TRUNK: | |
1531 | return vid; | |
1532 | ||
1533 | case PORT_VLAN_NATIVE_UNTAGGED: | |
1534 | case PORT_VLAN_NATIVE_TAGGED: | |
46c88433 | 1535 | return vid ? vid : in_xbundle->vlan; |
9583bc14 EJ |
1536 | |
1537 | default: | |
428b2edd | 1538 | OVS_NOT_REACHED(); |
9583bc14 EJ |
1539 | } |
1540 | } | |
1541 | ||
46c88433 | 1542 | /* Checks whether a packet with the given 'vid' may ingress on 'in_xbundle'. |
9583bc14 EJ |
1543 | * If so, returns true. Otherwise, returns false and, if 'warn' is true, logs |
1544 | * a warning. | |
1545 | * | |
1546 | * 'vid' should be the VID obtained from the 802.1Q header that was received as | |
1547 | * part of a packet (specify 0 if there was no 802.1Q header), in the range | |
1548 | * 0...4095. */ | |
1549 | static bool | |
46c88433 | 1550 | input_vid_is_valid(uint16_t vid, struct xbundle *in_xbundle, bool warn) |
9583bc14 EJ |
1551 | { |
1552 | /* Allow any VID on the OFPP_NONE port. */ | |
46c88433 | 1553 | if (in_xbundle == &ofpp_none_bundle) { |
9583bc14 EJ |
1554 | return true; |
1555 | } | |
1556 | ||
46c88433 | 1557 | switch (in_xbundle->vlan_mode) { |
9583bc14 EJ |
1558 | case PORT_VLAN_ACCESS: |
1559 | if (vid) { | |
1560 | if (warn) { | |
1561 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
46c88433 | 1562 | VLOG_WARN_RL(&rl, "dropping VLAN %"PRIu16" tagged " |
9583bc14 | 1563 | "packet received on port %s configured as VLAN " |
46c88433 EJ |
1564 | "%"PRIu16" access port", vid, in_xbundle->name, |
1565 | in_xbundle->vlan); | |
9583bc14 EJ |
1566 | } |
1567 | return false; | |
1568 | } | |
1569 | return true; | |
1570 | ||
1571 | case PORT_VLAN_NATIVE_UNTAGGED: | |
1572 | case PORT_VLAN_NATIVE_TAGGED: | |
1573 | if (!vid) { | |
1574 | /* Port must always carry its native VLAN. */ | |
1575 | return true; | |
1576 | } | |
1577 | /* Fall through. */ | |
1578 | case PORT_VLAN_TRUNK: | |
46c88433 | 1579 | if (!xbundle_includes_vlan(in_xbundle, vid)) { |
9583bc14 EJ |
1580 | if (warn) { |
1581 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
46c88433 | 1582 | VLOG_WARN_RL(&rl, "dropping VLAN %"PRIu16" packet " |
9583bc14 | 1583 | "received on port %s not configured for trunking " |
46c88433 | 1584 | "VLAN %"PRIu16, vid, in_xbundle->name, vid); |
9583bc14 EJ |
1585 | } |
1586 | return false; | |
1587 | } | |
1588 | return true; | |
1589 | ||
1590 | default: | |
428b2edd | 1591 | OVS_NOT_REACHED(); |
9583bc14 EJ |
1592 | } |
1593 | ||
1594 | } | |
1595 | ||
1596 | /* Given 'vlan', the VLAN that a packet belongs to, and | |
46c88433 | 1597 | * 'out_xbundle', a bundle on which the packet is to be output, returns the VID |
9583bc14 EJ |
1598 | * that should be included in the 802.1Q header. (If the return value is 0, |
1599 | * then the 802.1Q header should only be included in the packet if there is a | |
1600 | * nonzero PCP.) | |
1601 | * | |
1602 | * Both 'vlan' and the return value are in the range 0...4095. */ | |
1603 | static uint16_t | |
46c88433 | 1604 | output_vlan_to_vid(const struct xbundle *out_xbundle, uint16_t vlan) |
9583bc14 | 1605 | { |
46c88433 | 1606 | switch (out_xbundle->vlan_mode) { |
9583bc14 EJ |
1607 | case PORT_VLAN_ACCESS: |
1608 | return 0; | |
1609 | ||
1610 | case PORT_VLAN_TRUNK: | |
1611 | case PORT_VLAN_NATIVE_TAGGED: | |
1612 | return vlan; | |
1613 | ||
1614 | case PORT_VLAN_NATIVE_UNTAGGED: | |
46c88433 | 1615 | return vlan == out_xbundle->vlan ? 0 : vlan; |
9583bc14 EJ |
1616 | |
1617 | default: | |
428b2edd | 1618 | OVS_NOT_REACHED(); |
9583bc14 EJ |
1619 | } |
1620 | } | |
1621 | ||
1622 | static void | |
46c88433 | 1623 | output_normal(struct xlate_ctx *ctx, const struct xbundle *out_xbundle, |
9583bc14 EJ |
1624 | uint16_t vlan) |
1625 | { | |
33bf9176 | 1626 | ovs_be16 *flow_tci = &ctx->xin->flow.vlan_tci; |
9583bc14 EJ |
1627 | uint16_t vid; |
1628 | ovs_be16 tci, old_tci; | |
46c88433 | 1629 | struct xport *xport; |
9583bc14 | 1630 | |
46c88433 EJ |
1631 | vid = output_vlan_to_vid(out_xbundle, vlan); |
1632 | if (list_is_empty(&out_xbundle->xports)) { | |
1633 | /* Partially configured bundle with no slaves. Drop the packet. */ | |
1634 | return; | |
1635 | } else if (!out_xbundle->bond) { | |
92c08f09 | 1636 | ctx->use_recirc = false; |
46c88433 EJ |
1637 | xport = CONTAINER_OF(list_front(&out_xbundle->xports), struct xport, |
1638 | bundle_node); | |
9583bc14 | 1639 | } else { |
84f0f298 | 1640 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
54ecb5a2 | 1641 | struct flow_wildcards *wc = &ctx->xout->wc; |
84f0f298 RW |
1642 | struct xlate_recirc *xr = &ctx->recirc; |
1643 | struct ofport_dpif *ofport; | |
adcf00ba AZ |
1644 | |
1645 | if (ctx->xbridge->enable_recirc) { | |
92c08f09 | 1646 | ctx->use_recirc = bond_may_recirc( |
62ac1f20 | 1647 | out_xbundle->bond, &xr->recirc_id, &xr->hash_basis); |
adcf00ba | 1648 | |
92c08f09 | 1649 | if (ctx->use_recirc) { |
adcf00ba | 1650 | /* Only TCP mode uses recirculation. */ |
347bf289 | 1651 | xr->hash_alg = OVS_HASH_ALG_L4; |
adcf00ba | 1652 | bond_update_post_recirc_rules(out_xbundle->bond, false); |
54ecb5a2 AZ |
1653 | |
1654 | /* Recirculation does not require unmasking hash fields. */ | |
1655 | wc = NULL; | |
adcf00ba AZ |
1656 | } |
1657 | } | |
46c88433 | 1658 | |
54ecb5a2 AZ |
1659 | ofport = bond_choose_output_slave(out_xbundle->bond, |
1660 | &ctx->xin->flow, wc, vid); | |
84f0f298 | 1661 | xport = xport_lookup(xcfg, ofport); |
46c88433 EJ |
1662 | |
1663 | if (!xport) { | |
9583bc14 EJ |
1664 | /* No slaves enabled, so drop packet. */ |
1665 | return; | |
1666 | } | |
d6fc5f57 | 1667 | |
b256dc52 JS |
1668 | /* If ctx->xout->use_recirc is set, the main thread will handle stats |
1669 | * accounting for this bond. */ | |
92c08f09 | 1670 | if (!ctx->use_recirc) { |
b256dc52 JS |
1671 | if (ctx->xin->resubmit_stats) { |
1672 | bond_account(out_xbundle->bond, &ctx->xin->flow, vid, | |
1673 | ctx->xin->resubmit_stats->n_bytes); | |
1674 | } | |
1675 | if (ctx->xin->xcache) { | |
1676 | struct xc_entry *entry; | |
1677 | struct flow *flow; | |
1678 | ||
1679 | flow = &ctx->xin->flow; | |
1680 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_BOND); | |
1681 | entry->u.bond.bond = bond_ref(out_xbundle->bond); | |
1682 | entry->u.bond.flow = xmemdup(flow, sizeof *flow); | |
1683 | entry->u.bond.vid = vid; | |
1684 | } | |
d6fc5f57 | 1685 | } |
9583bc14 EJ |
1686 | } |
1687 | ||
33bf9176 | 1688 | old_tci = *flow_tci; |
9583bc14 | 1689 | tci = htons(vid); |
46c88433 | 1690 | if (tci || out_xbundle->use_priority_tags) { |
33bf9176 | 1691 | tci |= *flow_tci & htons(VLAN_PCP_MASK); |
9583bc14 EJ |
1692 | if (tci) { |
1693 | tci |= htons(VLAN_CFI); | |
1694 | } | |
1695 | } | |
33bf9176 | 1696 | *flow_tci = tci; |
9583bc14 | 1697 | |
46c88433 | 1698 | compose_output_action(ctx, xport->ofp_port); |
33bf9176 | 1699 | *flow_tci = old_tci; |
9583bc14 EJ |
1700 | } |
1701 | ||
1702 | /* A VM broadcasts a gratuitous ARP to indicate that it has resumed after | |
1703 | * migration. Older Citrix-patched Linux DomU used gratuitous ARP replies to | |
1704 | * indicate this; newer upstream kernels use gratuitous ARP requests. */ | |
1705 | static bool | |
1706 | is_gratuitous_arp(const struct flow *flow, struct flow_wildcards *wc) | |
1707 | { | |
1708 | if (flow->dl_type != htons(ETH_TYPE_ARP)) { | |
1709 | return false; | |
1710 | } | |
1711 | ||
1712 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); | |
1713 | if (!eth_addr_is_broadcast(flow->dl_dst)) { | |
1714 | return false; | |
1715 | } | |
1716 | ||
1717 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); | |
1718 | if (flow->nw_proto == ARP_OP_REPLY) { | |
1719 | return true; | |
1720 | } else if (flow->nw_proto == ARP_OP_REQUEST) { | |
1721 | memset(&wc->masks.nw_src, 0xff, sizeof wc->masks.nw_src); | |
1722 | memset(&wc->masks.nw_dst, 0xff, sizeof wc->masks.nw_dst); | |
1723 | ||
1724 | return flow->nw_src == flow->nw_dst; | |
1725 | } else { | |
1726 | return false; | |
1727 | } | |
1728 | } | |
1729 | ||
ff69c24a FL |
1730 | /* Determines whether packets in 'flow' within 'xbridge' should be forwarded or |
1731 | * dropped. Returns true if they may be forwarded, false if they should be | |
1732 | * dropped. | |
1733 | * | |
1734 | * 'in_port' must be the xport that corresponds to flow->in_port. | |
1735 | * 'in_port' must be part of a bundle (e.g. in_port->bundle must be nonnull). | |
1736 | * | |
1737 | * 'vlan' must be the VLAN that corresponds to flow->vlan_tci on 'in_port', as | |
1738 | * returned by input_vid_to_vlan(). It must be a valid VLAN for 'in_port', as | |
1739 | * checked by input_vid_is_valid(). | |
1740 | * | |
1741 | * May also add tags to '*tags', although the current implementation only does | |
1742 | * so in one special case. | |
1743 | */ | |
1744 | static bool | |
1745 | is_admissible(struct xlate_ctx *ctx, struct xport *in_port, | |
1746 | uint16_t vlan) | |
1747 | { | |
1748 | struct xbundle *in_xbundle = in_port->xbundle; | |
1749 | const struct xbridge *xbridge = ctx->xbridge; | |
1750 | struct flow *flow = &ctx->xin->flow; | |
1751 | ||
1752 | /* Drop frames for reserved multicast addresses | |
1753 | * only if forward_bpdu option is absent. */ | |
1754 | if (!xbridge->forward_bpdu && eth_addr_is_reserved(flow->dl_dst)) { | |
1755 | xlate_report(ctx, "packet has reserved destination MAC, dropping"); | |
1756 | return false; | |
1757 | } | |
1758 | ||
1759 | if (in_xbundle->bond) { | |
1760 | struct mac_entry *mac; | |
1761 | ||
1762 | switch (bond_check_admissibility(in_xbundle->bond, in_port->ofport, | |
1763 | flow->dl_dst)) { | |
1764 | case BV_ACCEPT: | |
1765 | break; | |
1766 | ||
1767 | case BV_DROP: | |
1768 | xlate_report(ctx, "bonding refused admissibility, dropping"); | |
1769 | return false; | |
1770 | ||
1771 | case BV_DROP_IF_MOVED: | |
1772 | ovs_rwlock_rdlock(&xbridge->ml->rwlock); | |
1773 | mac = mac_learning_lookup(xbridge->ml, flow->dl_src, vlan); | |
1774 | if (mac && mac->port.p != in_xbundle->ofbundle && | |
1775 | (!is_gratuitous_arp(flow, &ctx->xout->wc) | |
1776 | || mac_entry_is_grat_arp_locked(mac))) { | |
1777 | ovs_rwlock_unlock(&xbridge->ml->rwlock); | |
1778 | xlate_report(ctx, "SLB bond thinks this packet looped back, " | |
1779 | "dropping"); | |
1780 | return false; | |
1781 | } | |
1782 | ovs_rwlock_unlock(&xbridge->ml->rwlock); | |
1783 | break; | |
1784 | } | |
1785 | } | |
1786 | ||
1787 | return true; | |
1788 | } | |
1789 | ||
ee047520 BP |
1790 | /* Checks whether a MAC learning update is necessary for MAC learning table |
1791 | * 'ml' given that a packet matching 'flow' was received on 'in_xbundle' in | |
1792 | * 'vlan'. | |
1793 | * | |
1794 | * Most packets processed through the MAC learning table do not actually | |
1795 | * change it in any way. This function requires only a read lock on the MAC | |
1796 | * learning table, so it is much cheaper in this common case. | |
1797 | * | |
1798 | * Keep the code here synchronized with that in update_learning_table__() | |
1799 | * below. */ | |
1800 | static bool | |
1801 | is_mac_learning_update_needed(const struct mac_learning *ml, | |
1802 | const struct flow *flow, | |
1803 | struct flow_wildcards *wc, | |
1804 | int vlan, struct xbundle *in_xbundle) | |
d6fc5f57 | 1805 | OVS_REQ_RDLOCK(ml->rwlock) |
9583bc14 EJ |
1806 | { |
1807 | struct mac_entry *mac; | |
1808 | ||
ee047520 BP |
1809 | if (!mac_learning_may_learn(ml, flow->dl_src, vlan)) { |
1810 | return false; | |
1811 | } | |
1812 | ||
1813 | mac = mac_learning_lookup(ml, flow->dl_src, vlan); | |
1814 | if (!mac || mac_entry_age(ml, mac)) { | |
1815 | return true; | |
9583bc14 EJ |
1816 | } |
1817 | ||
ee047520 BP |
1818 | if (is_gratuitous_arp(flow, wc)) { |
1819 | /* We don't want to learn from gratuitous ARP packets that are | |
1820 | * reflected back over bond slaves so we lock the learning table. */ | |
1821 | if (!in_xbundle->bond) { | |
1822 | return true; | |
1823 | } else if (mac_entry_is_grat_arp_locked(mac)) { | |
1824 | return false; | |
1825 | } | |
1826 | } | |
1827 | ||
1828 | return mac->port.p != in_xbundle->ofbundle; | |
1829 | } | |
1830 | ||
1831 | ||
1832 | /* Updates MAC learning table 'ml' given that a packet matching 'flow' was | |
1833 | * received on 'in_xbundle' in 'vlan'. | |
1834 | * | |
1835 | * This code repeats all the checks in is_mac_learning_update_needed() because | |
1836 | * the lock was released between there and here and thus the MAC learning state | |
1837 | * could have changed. | |
1838 | * | |
1839 | * Keep the code here synchronized with that in is_mac_learning_update_needed() | |
1840 | * above. */ | |
1841 | static void | |
1842 | update_learning_table__(const struct xbridge *xbridge, | |
1843 | const struct flow *flow, struct flow_wildcards *wc, | |
1844 | int vlan, struct xbundle *in_xbundle) | |
d6fc5f57 | 1845 | OVS_REQ_WRLOCK(xbridge->ml->rwlock) |
ee047520 BP |
1846 | { |
1847 | struct mac_entry *mac; | |
1848 | ||
46c88433 | 1849 | if (!mac_learning_may_learn(xbridge->ml, flow->dl_src, vlan)) { |
ee047520 | 1850 | return; |
9583bc14 EJ |
1851 | } |
1852 | ||
46c88433 | 1853 | mac = mac_learning_insert(xbridge->ml, flow->dl_src, vlan); |
9583bc14 EJ |
1854 | if (is_gratuitous_arp(flow, wc)) { |
1855 | /* We don't want to learn from gratuitous ARP packets that are | |
1856 | * reflected back over bond slaves so we lock the learning table. */ | |
46c88433 | 1857 | if (!in_xbundle->bond) { |
9583bc14 EJ |
1858 | mac_entry_set_grat_arp_lock(mac); |
1859 | } else if (mac_entry_is_grat_arp_locked(mac)) { | |
ee047520 | 1860 | return; |
9583bc14 EJ |
1861 | } |
1862 | } | |
1863 | ||
30618594 | 1864 | if (mac->port.p != in_xbundle->ofbundle) { |
9583bc14 EJ |
1865 | /* The log messages here could actually be useful in debugging, |
1866 | * so keep the rate limit relatively high. */ | |
1867 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(30, 300); | |
ee047520 | 1868 | |
9583bc14 EJ |
1869 | VLOG_DBG_RL(&rl, "bridge %s: learned that "ETH_ADDR_FMT" is " |
1870 | "on port %s in VLAN %d", | |
46c88433 EJ |
1871 | xbridge->name, ETH_ADDR_ARGS(flow->dl_src), |
1872 | in_xbundle->name, vlan); | |
9583bc14 | 1873 | |
46c88433 | 1874 | mac->port.p = in_xbundle->ofbundle; |
30618594 | 1875 | mac_learning_changed(xbridge->ml); |
9583bc14 | 1876 | } |
ee047520 BP |
1877 | } |
1878 | ||
1879 | static void | |
1880 | update_learning_table(const struct xbridge *xbridge, | |
1881 | const struct flow *flow, struct flow_wildcards *wc, | |
1882 | int vlan, struct xbundle *in_xbundle) | |
1883 | { | |
1884 | bool need_update; | |
1885 | ||
1886 | /* Don't learn the OFPP_NONE port. */ | |
1887 | if (in_xbundle == &ofpp_none_bundle) { | |
1888 | return; | |
1889 | } | |
1890 | ||
1891 | /* First try the common case: no change to MAC learning table. */ | |
1892 | ovs_rwlock_rdlock(&xbridge->ml->rwlock); | |
1893 | need_update = is_mac_learning_update_needed(xbridge->ml, flow, wc, vlan, | |
1894 | in_xbundle); | |
509c0149 | 1895 | ovs_rwlock_unlock(&xbridge->ml->rwlock); |
ee047520 BP |
1896 | |
1897 | if (need_update) { | |
1898 | /* Slow path: MAC learning table might need an update. */ | |
1899 | ovs_rwlock_wrlock(&xbridge->ml->rwlock); | |
1900 | update_learning_table__(xbridge, flow, wc, vlan, in_xbundle); | |
1901 | ovs_rwlock_unlock(&xbridge->ml->rwlock); | |
1902 | } | |
9583bc14 EJ |
1903 | } |
1904 | ||
86e2dcdd FL |
1905 | /* Updates multicast snooping table 'ms' given that a packet matching 'flow' |
1906 | * was received on 'in_xbundle' in 'vlan' and is either Report or Query. */ | |
1907 | static void | |
1908 | update_mcast_snooping_table__(const struct xbridge *xbridge, | |
1909 | const struct flow *flow, | |
1910 | struct mcast_snooping *ms, | |
1911 | ovs_be32 ip4, int vlan, | |
1912 | struct xbundle *in_xbundle) | |
1913 | OVS_REQ_WRLOCK(ms->rwlock) | |
1914 | { | |
1915 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(60, 30); | |
1916 | ||
1917 | switch (ntohs(flow->tp_src)) { | |
1918 | case IGMP_HOST_MEMBERSHIP_REPORT: | |
1919 | case IGMPV2_HOST_MEMBERSHIP_REPORT: | |
1920 | if (mcast_snooping_add_group(ms, ip4, vlan, in_xbundle->ofbundle)) { | |
1921 | VLOG_DBG_RL(&rl, "bridge %s: multicast snooping learned that " | |
1922 | IP_FMT" is on port %s in VLAN %d", | |
1923 | xbridge->name, IP_ARGS(ip4), in_xbundle->name, vlan); | |
1924 | } | |
1925 | break; | |
1926 | case IGMP_HOST_LEAVE_MESSAGE: | |
1927 | if (mcast_snooping_leave_group(ms, ip4, vlan, in_xbundle->ofbundle)) { | |
1928 | VLOG_DBG_RL(&rl, "bridge %s: multicast snooping leaving " | |
1929 | IP_FMT" is on port %s in VLAN %d", | |
1930 | xbridge->name, IP_ARGS(ip4), in_xbundle->name, vlan); | |
1931 | } | |
1932 | break; | |
1933 | case IGMP_HOST_MEMBERSHIP_QUERY: | |
1934 | if (flow->nw_src && mcast_snooping_add_mrouter(ms, vlan, | |
1935 | in_xbundle->ofbundle)) { | |
1936 | VLOG_DBG_RL(&rl, "bridge %s: multicast snooping query from " | |
1937 | IP_FMT" is on port %s in VLAN %d", | |
1938 | xbridge->name, IP_ARGS(flow->nw_src), | |
1939 | in_xbundle->name, vlan); | |
1940 | } | |
1941 | break; | |
1942 | } | |
1943 | } | |
1944 | ||
1945 | /* Updates multicast snooping table 'ms' given that a packet matching 'flow' | |
1946 | * was received on 'in_xbundle' in 'vlan'. */ | |
1947 | static void | |
1948 | update_mcast_snooping_table(const struct xbridge *xbridge, | |
1949 | const struct flow *flow, int vlan, | |
1950 | struct xbundle *in_xbundle) | |
1951 | { | |
1952 | struct mcast_snooping *ms = xbridge->ms; | |
1953 | struct xlate_cfg *xcfg; | |
1954 | struct xbundle *mcast_xbundle; | |
1955 | struct mcast_fport_bundle *fport; | |
1956 | ||
1957 | /* Don't learn the OFPP_NONE port. */ | |
1958 | if (in_xbundle == &ofpp_none_bundle) { | |
1959 | return; | |
1960 | } | |
1961 | ||
1962 | /* Don't learn from flood ports */ | |
1963 | mcast_xbundle = NULL; | |
1964 | ovs_rwlock_wrlock(&ms->rwlock); | |
1965 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
1966 | LIST_FOR_EACH(fport, fport_node, &ms->fport_list) { | |
1967 | mcast_xbundle = xbundle_lookup(xcfg, fport->port); | |
1968 | if (mcast_xbundle == in_xbundle) { | |
1969 | break; | |
1970 | } | |
1971 | } | |
1972 | ||
1973 | if (!mcast_xbundle || mcast_xbundle != in_xbundle) { | |
1974 | update_mcast_snooping_table__(xbridge, flow, ms, flow->igmp_group_ip4, | |
1975 | vlan, in_xbundle); | |
1976 | } | |
1977 | ovs_rwlock_unlock(&ms->rwlock); | |
1978 | } | |
1979 | ||
1980 | /* send the packet to ports having the multicast group learned */ | |
1981 | static void | |
1982 | xlate_normal_mcast_send_group(struct xlate_ctx *ctx, | |
1983 | struct mcast_snooping *ms OVS_UNUSED, | |
1984 | struct mcast_group *grp, | |
1985 | struct xbundle *in_xbundle, uint16_t vlan) | |
1986 | OVS_REQ_RDLOCK(ms->rwlock) | |
1987 | { | |
1988 | struct xlate_cfg *xcfg; | |
1989 | struct mcast_group_bundle *b; | |
1990 | struct xbundle *mcast_xbundle; | |
1991 | ||
1992 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
1993 | LIST_FOR_EACH(b, bundle_node, &grp->bundle_lru) { | |
1994 | mcast_xbundle = xbundle_lookup(xcfg, b->port); | |
1995 | if (mcast_xbundle && mcast_xbundle != in_xbundle) { | |
1996 | xlate_report(ctx, "forwarding to mcast group port"); | |
1997 | output_normal(ctx, mcast_xbundle, vlan); | |
1998 | } else if (!mcast_xbundle) { | |
1999 | xlate_report(ctx, "mcast group port is unknown, dropping"); | |
2000 | } else { | |
2001 | xlate_report(ctx, "mcast group port is input port, dropping"); | |
2002 | } | |
2003 | } | |
2004 | } | |
2005 | ||
2006 | /* send the packet to ports connected to multicast routers */ | |
2007 | static void | |
2008 | xlate_normal_mcast_send_mrouters(struct xlate_ctx *ctx, | |
2009 | struct mcast_snooping *ms, | |
2010 | struct xbundle *in_xbundle, uint16_t vlan) | |
2011 | OVS_REQ_RDLOCK(ms->rwlock) | |
2012 | { | |
2013 | struct xlate_cfg *xcfg; | |
2014 | struct mcast_mrouter_bundle *mrouter; | |
2015 | struct xbundle *mcast_xbundle; | |
2016 | ||
2017 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
2018 | LIST_FOR_EACH(mrouter, mrouter_node, &ms->mrouter_lru) { | |
2019 | mcast_xbundle = xbundle_lookup(xcfg, mrouter->port); | |
2020 | if (mcast_xbundle && mcast_xbundle != in_xbundle) { | |
2021 | xlate_report(ctx, "forwarding to mcast router port"); | |
2022 | output_normal(ctx, mcast_xbundle, vlan); | |
2023 | } else if (!mcast_xbundle) { | |
2024 | xlate_report(ctx, "mcast router port is unknown, dropping"); | |
2025 | } else { | |
2026 | xlate_report(ctx, "mcast router port is input port, dropping"); | |
2027 | } | |
2028 | } | |
2029 | } | |
2030 | ||
2031 | /* send the packet to ports flagged to be flooded */ | |
2032 | static void | |
2033 | xlate_normal_mcast_send_fports(struct xlate_ctx *ctx, | |
2034 | struct mcast_snooping *ms, | |
2035 | struct xbundle *in_xbundle, uint16_t vlan) | |
2036 | OVS_REQ_RDLOCK(ms->rwlock) | |
2037 | { | |
2038 | struct xlate_cfg *xcfg; | |
2039 | struct mcast_fport_bundle *fport; | |
2040 | struct xbundle *mcast_xbundle; | |
2041 | ||
2042 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
2043 | LIST_FOR_EACH(fport, fport_node, &ms->fport_list) { | |
2044 | mcast_xbundle = xbundle_lookup(xcfg, fport->port); | |
2045 | if (mcast_xbundle && mcast_xbundle != in_xbundle) { | |
2046 | xlate_report(ctx, "forwarding to mcast flood port"); | |
2047 | output_normal(ctx, mcast_xbundle, vlan); | |
2048 | } else if (!mcast_xbundle) { | |
2049 | xlate_report(ctx, "mcast flood port is unknown, dropping"); | |
2050 | } else { | |
2051 | xlate_report(ctx, "mcast flood port is input port, dropping"); | |
2052 | } | |
2053 | } | |
2054 | } | |
2055 | ||
682800a4 FL |
2056 | static void |
2057 | xlate_normal_flood(struct xlate_ctx *ctx, struct xbundle *in_xbundle, | |
2058 | uint16_t vlan) | |
2059 | { | |
2060 | struct xbundle *xbundle; | |
2061 | ||
2062 | LIST_FOR_EACH (xbundle, list_node, &ctx->xbridge->xbundles) { | |
2063 | if (xbundle != in_xbundle | |
2064 | && xbundle_includes_vlan(xbundle, vlan) | |
2065 | && xbundle->floodable | |
2066 | && !xbundle_mirror_out(ctx->xbridge, xbundle)) { | |
2067 | output_normal(ctx, xbundle, vlan); | |
2068 | } | |
2069 | } | |
2070 | ctx->xout->nf_output_iface = NF_OUT_FLOOD; | |
2071 | } | |
2072 | ||
9583bc14 EJ |
2073 | static void |
2074 | xlate_normal(struct xlate_ctx *ctx) | |
2075 | { | |
33bf9176 BP |
2076 | struct flow_wildcards *wc = &ctx->xout->wc; |
2077 | struct flow *flow = &ctx->xin->flow; | |
46c88433 EJ |
2078 | struct xbundle *in_xbundle; |
2079 | struct xport *in_port; | |
9583bc14 | 2080 | struct mac_entry *mac; |
d6d5bbc9 | 2081 | void *mac_port; |
9583bc14 EJ |
2082 | uint16_t vlan; |
2083 | uint16_t vid; | |
2084 | ||
2085 | ctx->xout->has_normal = true; | |
2086 | ||
33bf9176 BP |
2087 | memset(&wc->masks.dl_src, 0xff, sizeof wc->masks.dl_src); |
2088 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); | |
1dd35f8a | 2089 | wc->masks.vlan_tci |= htons(VLAN_VID_MASK | VLAN_CFI); |
9583bc14 | 2090 | |
46c88433 EJ |
2091 | in_xbundle = lookup_input_bundle(ctx->xbridge, flow->in_port.ofp_port, |
2092 | ctx->xin->packet != NULL, &in_port); | |
2093 | if (!in_xbundle) { | |
9583bc14 EJ |
2094 | xlate_report(ctx, "no input bundle, dropping"); |
2095 | return; | |
2096 | } | |
2097 | ||
2098 | /* Drop malformed frames. */ | |
33bf9176 BP |
2099 | if (flow->dl_type == htons(ETH_TYPE_VLAN) && |
2100 | !(flow->vlan_tci & htons(VLAN_CFI))) { | |
9583bc14 EJ |
2101 | if (ctx->xin->packet != NULL) { |
2102 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
2103 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet with partial " | |
2104 | "VLAN tag received on port %s", | |
46c88433 | 2105 | ctx->xbridge->name, in_xbundle->name); |
9583bc14 EJ |
2106 | } |
2107 | xlate_report(ctx, "partial VLAN tag, dropping"); | |
2108 | return; | |
2109 | } | |
2110 | ||
2111 | /* Drop frames on bundles reserved for mirroring. */ | |
46c88433 | 2112 | if (xbundle_mirror_out(ctx->xbridge, in_xbundle)) { |
9583bc14 EJ |
2113 | if (ctx->xin->packet != NULL) { |
2114 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
2115 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet received on port " | |
2116 | "%s, which is reserved exclusively for mirroring", | |
46c88433 | 2117 | ctx->xbridge->name, in_xbundle->name); |
9583bc14 EJ |
2118 | } |
2119 | xlate_report(ctx, "input port is mirror output port, dropping"); | |
2120 | return; | |
2121 | } | |
2122 | ||
2123 | /* Check VLAN. */ | |
33bf9176 | 2124 | vid = vlan_tci_to_vid(flow->vlan_tci); |
46c88433 | 2125 | if (!input_vid_is_valid(vid, in_xbundle, ctx->xin->packet != NULL)) { |
9583bc14 EJ |
2126 | xlate_report(ctx, "disallowed VLAN VID for this input port, dropping"); |
2127 | return; | |
2128 | } | |
46c88433 | 2129 | vlan = input_vid_to_vlan(in_xbundle, vid); |
9583bc14 EJ |
2130 | |
2131 | /* Check other admissibility requirements. */ | |
2132 | if (in_port && !is_admissible(ctx, in_port, vlan)) { | |
2133 | return; | |
2134 | } | |
2135 | ||
2136 | /* Learn source MAC. */ | |
2137 | if (ctx->xin->may_learn) { | |
46c88433 | 2138 | update_learning_table(ctx->xbridge, flow, wc, vlan, in_xbundle); |
9583bc14 | 2139 | } |
b256dc52 JS |
2140 | if (ctx->xin->xcache) { |
2141 | struct xc_entry *entry; | |
2142 | ||
2143 | /* Save enough info to update mac learning table later. */ | |
2144 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_NORMAL); | |
9edf6b48 | 2145 | entry->u.normal.ofproto = ctx->xbridge->ofproto; |
b256dc52 JS |
2146 | entry->u.normal.flow = xmemdup(flow, sizeof *flow); |
2147 | entry->u.normal.vlan = vlan; | |
2148 | } | |
9583bc14 EJ |
2149 | |
2150 | /* Determine output bundle. */ | |
86e2dcdd FL |
2151 | if (mcast_snooping_enabled(ctx->xbridge->ms) |
2152 | && !eth_addr_is_broadcast(flow->dl_dst) | |
2153 | && eth_addr_is_multicast(flow->dl_dst) | |
2154 | && flow->dl_type == htons(ETH_TYPE_IP)) { | |
2155 | struct mcast_snooping *ms = ctx->xbridge->ms; | |
2156 | struct mcast_group *grp; | |
2157 | ||
2158 | if (flow->nw_proto == IPPROTO_IGMP) { | |
2159 | if (ctx->xin->may_learn) { | |
2160 | if (mcast_snooping_is_membership(flow->tp_src) || | |
2161 | mcast_snooping_is_query(flow->tp_src)) { | |
2162 | update_mcast_snooping_table(ctx->xbridge, flow, vlan, | |
2163 | in_xbundle); | |
2164 | } | |
2165 | } | |
d6d5bbc9 | 2166 | |
86e2dcdd FL |
2167 | if (mcast_snooping_is_membership(flow->tp_src)) { |
2168 | ovs_rwlock_rdlock(&ms->rwlock); | |
2169 | xlate_normal_mcast_send_mrouters(ctx, ms, in_xbundle, vlan); | |
2170 | ovs_rwlock_unlock(&ms->rwlock); | |
2171 | } else { | |
2172 | xlate_report(ctx, "multicast traffic, flooding"); | |
2173 | xlate_normal_flood(ctx, in_xbundle, vlan); | |
2174 | } | |
2175 | return; | |
2176 | } else { | |
2177 | if (ip_is_local_multicast(flow->nw_dst)) { | |
2178 | /* RFC4541: section 2.1.2, item 2: Packets with a dst IP | |
2179 | * address in the 224.0.0.x range which are not IGMP must | |
2180 | * be forwarded on all ports */ | |
2181 | xlate_report(ctx, "RFC4541: section 2.1.2, item 2, flooding"); | |
2182 | xlate_normal_flood(ctx, in_xbundle, vlan); | |
2183 | return; | |
2184 | } | |
2185 | } | |
2186 | ||
2187 | /* forwarding to group base ports */ | |
2188 | ovs_rwlock_rdlock(&ms->rwlock); | |
2189 | grp = mcast_snooping_lookup(ms, flow->nw_dst, vlan); | |
2190 | if (grp) { | |
2191 | xlate_normal_mcast_send_group(ctx, ms, grp, in_xbundle, vlan); | |
2192 | xlate_normal_mcast_send_fports(ctx, ms, in_xbundle, vlan); | |
2193 | xlate_normal_mcast_send_mrouters(ctx, ms, in_xbundle, vlan); | |
9583bc14 | 2194 | } else { |
86e2dcdd FL |
2195 | if (mcast_snooping_flood_unreg(ms)) { |
2196 | xlate_report(ctx, "unregistered multicast, flooding"); | |
2197 | xlate_normal_flood(ctx, in_xbundle, vlan); | |
2198 | } else { | |
2199 | xlate_normal_mcast_send_mrouters(ctx, ms, in_xbundle, vlan); | |
2200 | xlate_normal_mcast_send_fports(ctx, ms, in_xbundle, vlan); | |
2201 | } | |
9583bc14 | 2202 | } |
86e2dcdd | 2203 | ovs_rwlock_unlock(&ms->rwlock); |
9583bc14 | 2204 | } else { |
86e2dcdd FL |
2205 | ovs_rwlock_rdlock(&ctx->xbridge->ml->rwlock); |
2206 | mac = mac_learning_lookup(ctx->xbridge->ml, flow->dl_dst, vlan); | |
2207 | mac_port = mac ? mac->port.p : NULL; | |
2208 | ovs_rwlock_unlock(&ctx->xbridge->ml->rwlock); | |
2209 | ||
2210 | if (mac_port) { | |
2211 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
2212 | struct xbundle *mac_xbundle = xbundle_lookup(xcfg, mac_port); | |
2213 | if (mac_xbundle && mac_xbundle != in_xbundle) { | |
2214 | xlate_report(ctx, "forwarding to learned port"); | |
2215 | output_normal(ctx, mac_xbundle, vlan); | |
2216 | } else if (!mac_xbundle) { | |
2217 | xlate_report(ctx, "learned port is unknown, dropping"); | |
2218 | } else { | |
2219 | xlate_report(ctx, "learned port is input port, dropping"); | |
2220 | } | |
2221 | } else { | |
2222 | xlate_report(ctx, "no learned MAC for destination, flooding"); | |
2223 | xlate_normal_flood(ctx, in_xbundle, vlan); | |
2224 | } | |
9583bc14 EJ |
2225 | } |
2226 | } | |
2227 | ||
2228 | /* Compose SAMPLE action for sFlow or IPFIX. The given probability is | |
2229 | * the number of packets out of UINT32_MAX to sample. The given | |
2230 | * cookie is passed back in the callback for each sampled packet. | |
2231 | */ | |
2232 | static size_t | |
46c88433 | 2233 | compose_sample_action(const struct xbridge *xbridge, |
9583bc14 EJ |
2234 | struct ofpbuf *odp_actions, |
2235 | const struct flow *flow, | |
2236 | const uint32_t probability, | |
2237 | const union user_action_cookie *cookie, | |
8b7ea2d4 WZ |
2238 | const size_t cookie_size, |
2239 | const odp_port_t tunnel_out_port) | |
9583bc14 EJ |
2240 | { |
2241 | size_t sample_offset, actions_offset; | |
89a8a7f0 | 2242 | odp_port_t odp_port; |
9583bc14 | 2243 | int cookie_offset; |
89a8a7f0 | 2244 | uint32_t pid; |
9583bc14 EJ |
2245 | |
2246 | sample_offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_SAMPLE); | |
2247 | ||
2248 | nl_msg_put_u32(odp_actions, OVS_SAMPLE_ATTR_PROBABILITY, probability); | |
2249 | ||
2250 | actions_offset = nl_msg_start_nested(odp_actions, OVS_SAMPLE_ATTR_ACTIONS); | |
89a8a7f0 EJ |
2251 | |
2252 | odp_port = ofp_port_to_odp_port(xbridge, flow->in_port.ofp_port); | |
9a159f74 AW |
2253 | pid = dpif_port_get_pid(xbridge->dpif, odp_port, |
2254 | flow_hash_5tuple(flow, 0)); | |
2255 | cookie_offset = odp_put_userspace_action(pid, cookie, cookie_size, | |
8b7ea2d4 | 2256 | tunnel_out_port, odp_actions); |
9583bc14 EJ |
2257 | |
2258 | nl_msg_end_nested(odp_actions, actions_offset); | |
2259 | nl_msg_end_nested(odp_actions, sample_offset); | |
2260 | return cookie_offset; | |
2261 | } | |
2262 | ||
2263 | static void | |
46c88433 EJ |
2264 | compose_sflow_cookie(const struct xbridge *xbridge, ovs_be16 vlan_tci, |
2265 | odp_port_t odp_port, unsigned int n_outputs, | |
2266 | union user_action_cookie *cookie) | |
9583bc14 EJ |
2267 | { |
2268 | int ifindex; | |
2269 | ||
2270 | cookie->type = USER_ACTION_COOKIE_SFLOW; | |
2271 | cookie->sflow.vlan_tci = vlan_tci; | |
2272 | ||
2273 | /* See http://www.sflow.org/sflow_version_5.txt (search for "Input/output | |
2274 | * port information") for the interpretation of cookie->output. */ | |
2275 | switch (n_outputs) { | |
2276 | case 0: | |
2277 | /* 0x40000000 | 256 means "packet dropped for unknown reason". */ | |
2278 | cookie->sflow.output = 0x40000000 | 256; | |
2279 | break; | |
2280 | ||
2281 | case 1: | |
46c88433 | 2282 | ifindex = dpif_sflow_odp_port_to_ifindex(xbridge->sflow, odp_port); |
9583bc14 EJ |
2283 | if (ifindex) { |
2284 | cookie->sflow.output = ifindex; | |
2285 | break; | |
2286 | } | |
2287 | /* Fall through. */ | |
2288 | default: | |
2289 | /* 0x80000000 means "multiple output ports. */ | |
2290 | cookie->sflow.output = 0x80000000 | n_outputs; | |
2291 | break; | |
2292 | } | |
2293 | } | |
2294 | ||
2295 | /* Compose SAMPLE action for sFlow bridge sampling. */ | |
2296 | static size_t | |
46c88433 | 2297 | compose_sflow_action(const struct xbridge *xbridge, |
9583bc14 EJ |
2298 | struct ofpbuf *odp_actions, |
2299 | const struct flow *flow, | |
4e022ec0 | 2300 | odp_port_t odp_port) |
9583bc14 EJ |
2301 | { |
2302 | uint32_t probability; | |
2303 | union user_action_cookie cookie; | |
2304 | ||
46c88433 | 2305 | if (!xbridge->sflow || flow->in_port.ofp_port == OFPP_NONE) { |
9583bc14 EJ |
2306 | return 0; |
2307 | } | |
2308 | ||
46c88433 EJ |
2309 | probability = dpif_sflow_get_probability(xbridge->sflow); |
2310 | compose_sflow_cookie(xbridge, htons(0), odp_port, | |
4e022ec0 | 2311 | odp_port == ODPP_NONE ? 0 : 1, &cookie); |
9583bc14 | 2312 | |
46c88433 | 2313 | return compose_sample_action(xbridge, odp_actions, flow, probability, |
8b7ea2d4 | 2314 | &cookie, sizeof cookie.sflow, ODPP_NONE); |
9583bc14 EJ |
2315 | } |
2316 | ||
2317 | static void | |
2318 | compose_flow_sample_cookie(uint16_t probability, uint32_t collector_set_id, | |
2319 | uint32_t obs_domain_id, uint32_t obs_point_id, | |
2320 | union user_action_cookie *cookie) | |
2321 | { | |
2322 | cookie->type = USER_ACTION_COOKIE_FLOW_SAMPLE; | |
2323 | cookie->flow_sample.probability = probability; | |
2324 | cookie->flow_sample.collector_set_id = collector_set_id; | |
2325 | cookie->flow_sample.obs_domain_id = obs_domain_id; | |
2326 | cookie->flow_sample.obs_point_id = obs_point_id; | |
2327 | } | |
2328 | ||
2329 | static void | |
8b7ea2d4 WZ |
2330 | compose_ipfix_cookie(union user_action_cookie *cookie, |
2331 | odp_port_t output_odp_port) | |
9583bc14 EJ |
2332 | { |
2333 | cookie->type = USER_ACTION_COOKIE_IPFIX; | |
8b7ea2d4 | 2334 | cookie->ipfix.output_odp_port = output_odp_port; |
9583bc14 EJ |
2335 | } |
2336 | ||
2337 | /* Compose SAMPLE action for IPFIX bridge sampling. */ | |
2338 | static void | |
46c88433 | 2339 | compose_ipfix_action(const struct xbridge *xbridge, |
9583bc14 | 2340 | struct ofpbuf *odp_actions, |
8b7ea2d4 WZ |
2341 | const struct flow *flow, |
2342 | odp_port_t output_odp_port) | |
9583bc14 EJ |
2343 | { |
2344 | uint32_t probability; | |
2345 | union user_action_cookie cookie; | |
8b7ea2d4 | 2346 | odp_port_t tunnel_out_port = ODPP_NONE; |
9583bc14 | 2347 | |
46c88433 | 2348 | if (!xbridge->ipfix || flow->in_port.ofp_port == OFPP_NONE) { |
9583bc14 EJ |
2349 | return; |
2350 | } | |
2351 | ||
8b7ea2d4 WZ |
2352 | /* For input case, output_odp_port is ODPP_NONE, which is an invalid port |
2353 | * number. */ | |
2354 | if (output_odp_port == ODPP_NONE && | |
2355 | !dpif_ipfix_get_bridge_exporter_input_sampling(xbridge->ipfix)) { | |
2356 | return; | |
2357 | } | |
2358 | ||
2359 | /* For output case, output_odp_port is valid*/ | |
2360 | if (output_odp_port != ODPP_NONE) { | |
2361 | if (!dpif_ipfix_get_bridge_exporter_output_sampling(xbridge->ipfix)) { | |
2362 | return; | |
2363 | } | |
2364 | /* If tunnel sampling is enabled, put an additional option attribute: | |
2365 | * OVS_USERSPACE_ATTR_TUNNEL_OUT_PORT | |
2366 | */ | |
2367 | if (dpif_ipfix_get_bridge_exporter_tunnel_sampling(xbridge->ipfix) && | |
2368 | dpif_ipfix_get_tunnel_port(xbridge->ipfix, output_odp_port) ) { | |
2369 | tunnel_out_port = output_odp_port; | |
2370 | } | |
2371 | } | |
2372 | ||
46c88433 | 2373 | probability = dpif_ipfix_get_bridge_exporter_probability(xbridge->ipfix); |
8b7ea2d4 | 2374 | compose_ipfix_cookie(&cookie, output_odp_port); |
9583bc14 | 2375 | |
46c88433 | 2376 | compose_sample_action(xbridge, odp_actions, flow, probability, |
8b7ea2d4 | 2377 | &cookie, sizeof cookie.ipfix, tunnel_out_port); |
9583bc14 EJ |
2378 | } |
2379 | ||
2380 | /* SAMPLE action for sFlow must be first action in any given list of | |
2381 | * actions. At this point we do not have all information required to | |
2382 | * build it. So try to build sample action as complete as possible. */ | |
2383 | static void | |
2384 | add_sflow_action(struct xlate_ctx *ctx) | |
2385 | { | |
46c88433 | 2386 | ctx->user_cookie_offset = compose_sflow_action(ctx->xbridge, |
cc377352 | 2387 | ctx->xout->odp_actions, |
4e022ec0 | 2388 | &ctx->xin->flow, ODPP_NONE); |
9583bc14 EJ |
2389 | ctx->sflow_odp_port = 0; |
2390 | ctx->sflow_n_outputs = 0; | |
2391 | } | |
2392 | ||
2393 | /* SAMPLE action for IPFIX must be 1st or 2nd action in any given list | |
2394 | * of actions, eventually after the SAMPLE action for sFlow. */ | |
2395 | static void | |
2396 | add_ipfix_action(struct xlate_ctx *ctx) | |
2397 | { | |
cc377352 | 2398 | compose_ipfix_action(ctx->xbridge, ctx->xout->odp_actions, |
8b7ea2d4 WZ |
2399 | &ctx->xin->flow, ODPP_NONE); |
2400 | } | |
2401 | ||
2402 | static void | |
2403 | add_ipfix_output_action(struct xlate_ctx *ctx, odp_port_t port) | |
2404 | { | |
2405 | compose_ipfix_action(ctx->xbridge, ctx->xout->odp_actions, | |
2406 | &ctx->xin->flow, port); | |
9583bc14 EJ |
2407 | } |
2408 | ||
2409 | /* Fix SAMPLE action according to data collected while composing ODP actions. | |
2410 | * We need to fix SAMPLE actions OVS_SAMPLE_ATTR_ACTIONS attribute, i.e. nested | |
2411 | * USERSPACE action's user-cookie which is required for sflow. */ | |
2412 | static void | |
2413 | fix_sflow_action(struct xlate_ctx *ctx) | |
2414 | { | |
2415 | const struct flow *base = &ctx->base_flow; | |
2416 | union user_action_cookie *cookie; | |
2417 | ||
2418 | if (!ctx->user_cookie_offset) { | |
2419 | return; | |
2420 | } | |
2421 | ||
cc377352 | 2422 | cookie = ofpbuf_at(ctx->xout->odp_actions, ctx->user_cookie_offset, |
9583bc14 EJ |
2423 | sizeof cookie->sflow); |
2424 | ovs_assert(cookie->type == USER_ACTION_COOKIE_SFLOW); | |
2425 | ||
46c88433 | 2426 | compose_sflow_cookie(ctx->xbridge, base->vlan_tci, |
9583bc14 EJ |
2427 | ctx->sflow_odp_port, ctx->sflow_n_outputs, cookie); |
2428 | } | |
2429 | ||
db7d4e46 | 2430 | static enum slow_path_reason |
642dc74d | 2431 | process_special(struct xlate_ctx *ctx, const struct flow *flow, |
46c88433 | 2432 | const struct xport *xport, const struct ofpbuf *packet) |
db7d4e46 | 2433 | { |
642dc74d | 2434 | struct flow_wildcards *wc = &ctx->xout->wc; |
46c88433 | 2435 | const struct xbridge *xbridge = ctx->xbridge; |
642dc74d | 2436 | |
46c88433 | 2437 | if (!xport) { |
db7d4e46 | 2438 | return 0; |
46c88433 | 2439 | } else if (xport->cfm && cfm_should_process_flow(xport->cfm, flow, wc)) { |
db7d4e46 | 2440 | if (packet) { |
46c88433 | 2441 | cfm_process_heartbeat(xport->cfm, packet); |
db7d4e46 JP |
2442 | } |
2443 | return SLOW_CFM; | |
fab52e16 | 2444 | } else if (xport->bfd && bfd_should_process_flow(xport->bfd, flow, wc)) { |
db7d4e46 | 2445 | if (packet) { |
46c88433 | 2446 | bfd_process_packet(xport->bfd, flow, packet); |
60d02c72 AW |
2447 | /* If POLL received, immediately sends FINAL back. */ |
2448 | if (bfd_should_send_packet(xport->bfd)) { | |
6d308b28 | 2449 | ofproto_dpif_monitor_port_send_soon(xport->ofport); |
60d02c72 | 2450 | } |
db7d4e46 JP |
2451 | } |
2452 | return SLOW_BFD; | |
46c88433 | 2453 | } else if (xport->xbundle && xport->xbundle->lacp |
db7d4e46 JP |
2454 | && flow->dl_type == htons(ETH_TYPE_LACP)) { |
2455 | if (packet) { | |
46c88433 | 2456 | lacp_process_packet(xport->xbundle->lacp, xport->ofport, packet); |
db7d4e46 JP |
2457 | } |
2458 | return SLOW_LACP; | |
9efd308e DV |
2459 | } else if ((xbridge->stp || xbridge->rstp) && |
2460 | stp_should_process_flow(flow, wc)) { | |
db7d4e46 | 2461 | if (packet) { |
f025bcb7 JR |
2462 | xbridge->stp |
2463 | ? stp_process_packet(xport, packet) | |
2464 | : rstp_process_packet(xport, packet); | |
db7d4e46 JP |
2465 | } |
2466 | return SLOW_STP; | |
2467 | } else { | |
2468 | return 0; | |
2469 | } | |
2470 | } | |
2471 | ||
9583bc14 | 2472 | static void |
4e022ec0 | 2473 | compose_output_action__(struct xlate_ctx *ctx, ofp_port_t ofp_port, |
9583bc14 EJ |
2474 | bool check_stp) |
2475 | { | |
46c88433 | 2476 | const struct xport *xport = get_ofp_port(ctx->xbridge, ofp_port); |
1dd35f8a | 2477 | struct flow_wildcards *wc = &ctx->xout->wc; |
33bf9176 | 2478 | struct flow *flow = &ctx->xin->flow; |
9583bc14 | 2479 | ovs_be16 flow_vlan_tci; |
1362e248 | 2480 | uint32_t flow_pkt_mark; |
9583bc14 | 2481 | uint8_t flow_nw_tos; |
4e022ec0 | 2482 | odp_port_t out_port, odp_port; |
ca077186 | 2483 | uint8_t dscp; |
9583bc14 EJ |
2484 | |
2485 | /* If 'struct flow' gets additional metadata, we'll need to zero it out | |
2486 | * before traversing a patch port. */ | |
0e612675 | 2487 | BUILD_ASSERT_DECL(FLOW_WC_SEQ == 27); |
9583bc14 | 2488 | |
46c88433 | 2489 | if (!xport) { |
9583bc14 EJ |
2490 | xlate_report(ctx, "Nonexistent output port"); |
2491 | return; | |
46c88433 | 2492 | } else if (xport->config & OFPUTIL_PC_NO_FWD) { |
9583bc14 EJ |
2493 | xlate_report(ctx, "OFPPC_NO_FWD set, skipping output"); |
2494 | return; | |
0d1cee12 | 2495 | } else if (check_stp) { |
bbbca389 | 2496 | if (is_stp(&ctx->base_flow)) { |
9efd308e DV |
2497 | if (!xport_stp_should_forward_bpdu(xport) && |
2498 | !xport_rstp_should_manage_bpdu(xport)) { | |
2499 | if (ctx->xbridge->stp != NULL) { | |
2500 | xlate_report(ctx, "STP not in listening state, " | |
2501 | "skipping bpdu output"); | |
2502 | } else if (ctx->xbridge->rstp != NULL) { | |
2503 | xlate_report(ctx, "RSTP not managing BPDU in this state, " | |
2504 | "skipping bpdu output"); | |
2505 | } | |
0d1cee12 K |
2506 | return; |
2507 | } | |
9efd308e DV |
2508 | } else if (!xport_stp_forward_state(xport) || |
2509 | !xport_rstp_forward_state(xport)) { | |
2510 | if (ctx->xbridge->stp != NULL) { | |
2511 | xlate_report(ctx, "STP not in forwarding state, " | |
2512 | "skipping output"); | |
2513 | } else if (ctx->xbridge->rstp != NULL) { | |
2514 | xlate_report(ctx, "RSTP not in forwarding state, " | |
2515 | "skipping output"); | |
2516 | } | |
0d1cee12 K |
2517 | return; |
2518 | } | |
9583bc14 EJ |
2519 | } |
2520 | ||
46c88433 EJ |
2521 | if (mbridge_has_mirrors(ctx->xbridge->mbridge) && xport->xbundle) { |
2522 | ctx->xout->mirrors |= xbundle_mirror_dst(xport->xbundle->xbridge, | |
2523 | xport->xbundle); | |
cdf5d3a5 EJ |
2524 | } |
2525 | ||
46c88433 EJ |
2526 | if (xport->peer) { |
2527 | const struct xport *peer = xport->peer; | |
9583bc14 | 2528 | struct flow old_flow = ctx->xin->flow; |
9583bc14 | 2529 | enum slow_path_reason special; |
9583bc14 | 2530 | |
46c88433 EJ |
2531 | ctx->xbridge = peer->xbridge; |
2532 | flow->in_port.ofp_port = peer->ofp_port; | |
33bf9176 BP |
2533 | flow->metadata = htonll(0); |
2534 | memset(&flow->tunnel, 0, sizeof flow->tunnel); | |
2535 | memset(flow->regs, 0, sizeof flow->regs); | |
9583bc14 | 2536 | |
642dc74d | 2537 | special = process_special(ctx, &ctx->xin->flow, peer, |
9583bc14 EJ |
2538 | ctx->xin->packet); |
2539 | if (special) { | |
04594cd5 | 2540 | ctx->xout->slow |= special; |
ddd3c975 | 2541 | } else if (may_receive(peer, ctx)) { |
9efd308e | 2542 | if (xport_stp_forward_state(peer) && xport_rstp_forward_state(peer)) { |
6d328fa2 | 2543 | xlate_table_action(ctx, flow->in_port.ofp_port, 0, true, true); |
9583bc14 | 2544 | } else { |
9efd308e DV |
2545 | /* Forwarding is disabled by STP and RSTP. Let OFPP_NORMAL and |
2546 | * the learning action look at the packet, then drop it. */ | |
9583bc14 | 2547 | struct flow old_base_flow = ctx->base_flow; |
cc377352 | 2548 | size_t old_size = ofpbuf_size(ctx->xout->odp_actions); |
cdf5d3a5 | 2549 | mirror_mask_t old_mirrors = ctx->xout->mirrors; |
6d328fa2 | 2550 | xlate_table_action(ctx, flow->in_port.ofp_port, 0, true, true); |
cdf5d3a5 | 2551 | ctx->xout->mirrors = old_mirrors; |
9583bc14 | 2552 | ctx->base_flow = old_base_flow; |
cc377352 | 2553 | ofpbuf_set_size(ctx->xout->odp_actions, old_size); |
9583bc14 EJ |
2554 | } |
2555 | } | |
2556 | ||
2557 | ctx->xin->flow = old_flow; | |
832554e3 | 2558 | ctx->xbridge = xport->xbridge; |
9583bc14 EJ |
2559 | |
2560 | if (ctx->xin->resubmit_stats) { | |
46c88433 EJ |
2561 | netdev_vport_inc_tx(xport->netdev, ctx->xin->resubmit_stats); |
2562 | netdev_vport_inc_rx(peer->netdev, ctx->xin->resubmit_stats); | |
a1aeea86 AW |
2563 | if (peer->bfd) { |
2564 | bfd_account_rx(peer->bfd, ctx->xin->resubmit_stats); | |
2565 | } | |
9583bc14 | 2566 | } |
b256dc52 JS |
2567 | if (ctx->xin->xcache) { |
2568 | struct xc_entry *entry; | |
2569 | ||
2570 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_NETDEV); | |
2571 | entry->u.dev.tx = netdev_ref(xport->netdev); | |
2572 | entry->u.dev.rx = netdev_ref(peer->netdev); | |
2573 | entry->u.dev.bfd = bfd_ref(peer->bfd); | |
2574 | } | |
9583bc14 EJ |
2575 | return; |
2576 | } | |
2577 | ||
33bf9176 | 2578 | flow_vlan_tci = flow->vlan_tci; |
1362e248 | 2579 | flow_pkt_mark = flow->pkt_mark; |
33bf9176 | 2580 | flow_nw_tos = flow->nw_tos; |
9583bc14 | 2581 | |
16194afd DDP |
2582 | if (count_skb_priorities(xport)) { |
2583 | memset(&wc->masks.skb_priority, 0xff, sizeof wc->masks.skb_priority); | |
2584 | if (dscp_from_skb_priority(xport, flow->skb_priority, &dscp)) { | |
2585 | wc->masks.nw_tos |= IP_DSCP_MASK; | |
2586 | flow->nw_tos &= ~IP_DSCP_MASK; | |
2587 | flow->nw_tos |= dscp; | |
2588 | } | |
9583bc14 EJ |
2589 | } |
2590 | ||
46c88433 | 2591 | if (xport->is_tunnel) { |
9583bc14 EJ |
2592 | /* Save tunnel metadata so that changes made due to |
2593 | * the Logical (tunnel) Port are not visible for any further | |
2594 | * matches, while explicit set actions on tunnel metadata are. | |
2595 | */ | |
33bf9176 | 2596 | struct flow_tnl flow_tnl = flow->tunnel; |
46c88433 | 2597 | odp_port = tnl_port_send(xport->ofport, flow, &ctx->xout->wc); |
4e022ec0 | 2598 | if (odp_port == ODPP_NONE) { |
9583bc14 EJ |
2599 | xlate_report(ctx, "Tunneling decided against output"); |
2600 | goto out; /* restore flow_nw_tos */ | |
2601 | } | |
33bf9176 | 2602 | if (flow->tunnel.ip_dst == ctx->orig_tunnel_ip_dst) { |
9583bc14 EJ |
2603 | xlate_report(ctx, "Not tunneling to our own address"); |
2604 | goto out; /* restore flow_nw_tos */ | |
2605 | } | |
2606 | if (ctx->xin->resubmit_stats) { | |
46c88433 | 2607 | netdev_vport_inc_tx(xport->netdev, ctx->xin->resubmit_stats); |
9583bc14 | 2608 | } |
b256dc52 JS |
2609 | if (ctx->xin->xcache) { |
2610 | struct xc_entry *entry; | |
2611 | ||
2612 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_NETDEV); | |
2613 | entry->u.dev.tx = netdev_ref(xport->netdev); | |
2614 | } | |
9583bc14 | 2615 | out_port = odp_port; |
33bf9176 | 2616 | commit_odp_tunnel_action(flow, &ctx->base_flow, |
cc377352 | 2617 | ctx->xout->odp_actions); |
33bf9176 | 2618 | flow->tunnel = flow_tnl; /* Restore tunnel metadata */ |
9583bc14 | 2619 | } else { |
46c88433 | 2620 | odp_port = xport->odp_port; |
7614e5d0 | 2621 | out_port = odp_port; |
46c88433 | 2622 | if (ofproto_has_vlan_splinters(ctx->xbridge->ofproto)) { |
7614e5d0 JR |
2623 | ofp_port_t vlandev_port; |
2624 | ||
1dd35f8a | 2625 | wc->masks.vlan_tci |= htons(VLAN_VID_MASK | VLAN_CFI); |
7614e5d0 JR |
2626 | vlandev_port = vsp_realdev_to_vlandev(ctx->xbridge->ofproto, |
2627 | ofp_port, flow->vlan_tci); | |
2628 | if (vlandev_port != ofp_port) { | |
2629 | out_port = ofp_port_to_odp_port(ctx->xbridge, vlandev_port); | |
2630 | flow->vlan_tci = htons(0); | |
2631 | } | |
9583bc14 | 2632 | } |
9583bc14 | 2633 | } |
9583bc14 | 2634 | |
4e022ec0 | 2635 | if (out_port != ODPP_NONE) { |
7fd91025 | 2636 | ctx->xout->slow |= commit_odp_actions(flow, &ctx->base_flow, |
cc377352 | 2637 | ctx->xout->odp_actions, |
d23df9a8 JR |
2638 | &ctx->xout->wc, |
2639 | ctx->xbridge->masked_set_action); | |
adcf00ba | 2640 | |
92c08f09 | 2641 | if (ctx->use_recirc) { |
347bf289 | 2642 | struct ovs_action_hash *act_hash; |
92c08f09 | 2643 | struct xlate_recirc *xr = &ctx->recirc; |
adcf00ba | 2644 | |
347bf289 | 2645 | /* Hash action. */ |
cc377352 | 2646 | act_hash = nl_msg_put_unspec_uninit(ctx->xout->odp_actions, |
347bf289 AZ |
2647 | OVS_ACTION_ATTR_HASH, |
2648 | sizeof *act_hash); | |
2649 | act_hash->hash_alg = xr->hash_alg; | |
62ac1f20 | 2650 | act_hash->hash_basis = xr->hash_basis; |
347bf289 AZ |
2651 | |
2652 | /* Recirc action. */ | |
cc377352 | 2653 | nl_msg_put_u32(ctx->xout->odp_actions, OVS_ACTION_ATTR_RECIRC, |
347bf289 | 2654 | xr->recirc_id); |
adcf00ba | 2655 | } else { |
8b7ea2d4 | 2656 | add_ipfix_output_action(ctx, out_port); |
cc377352 | 2657 | nl_msg_put_odp_port(ctx->xout->odp_actions, OVS_ACTION_ATTR_OUTPUT, |
adcf00ba AZ |
2658 | out_port); |
2659 | } | |
9583bc14 | 2660 | |
6cbbf4fa EJ |
2661 | ctx->sflow_odp_port = odp_port; |
2662 | ctx->sflow_n_outputs++; | |
2663 | ctx->xout->nf_output_iface = ofp_port; | |
2664 | } | |
2665 | ||
2666 | out: | |
9583bc14 | 2667 | /* Restore flow */ |
33bf9176 | 2668 | flow->vlan_tci = flow_vlan_tci; |
1362e248 | 2669 | flow->pkt_mark = flow_pkt_mark; |
33bf9176 | 2670 | flow->nw_tos = flow_nw_tos; |
9583bc14 EJ |
2671 | } |
2672 | ||
2673 | static void | |
4e022ec0 | 2674 | compose_output_action(struct xlate_ctx *ctx, ofp_port_t ofp_port) |
9583bc14 EJ |
2675 | { |
2676 | compose_output_action__(ctx, ofp_port, true); | |
2677 | } | |
2678 | ||
bb61b33d BP |
2679 | static void |
2680 | xlate_recursively(struct xlate_ctx *ctx, struct rule_dpif *rule) | |
bb61b33d BP |
2681 | { |
2682 | struct rule_dpif *old_rule = ctx->rule; | |
dc723c44 | 2683 | const struct rule_actions *actions; |
bb61b33d BP |
2684 | |
2685 | if (ctx->xin->resubmit_stats) { | |
70742c7f | 2686 | rule_dpif_credit_stats(rule, ctx->xin->resubmit_stats); |
bb61b33d BP |
2687 | } |
2688 | ||
98b07853 | 2689 | ctx->resubmits++; |
bb61b33d BP |
2690 | ctx->recurse++; |
2691 | ctx->rule = rule; | |
6f00e29b BP |
2692 | actions = rule_dpif_get_actions(rule); |
2693 | do_xlate_actions(actions->ofpacts, actions->ofpacts_len, ctx); | |
bb61b33d BP |
2694 | ctx->rule = old_rule; |
2695 | ctx->recurse--; | |
bb61b33d BP |
2696 | } |
2697 | ||
bd3240ba SH |
2698 | static bool |
2699 | xlate_resubmit_resource_check(struct xlate_ctx *ctx) | |
9583bc14 | 2700 | { |
98b07853 BP |
2701 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); |
2702 | ||
adcf00ba | 2703 | if (ctx->recurse >= MAX_RESUBMIT_RECURSION + MAX_INTERNAL_RESUBMITS) { |
98b07853 BP |
2704 | VLOG_ERR_RL(&rl, "resubmit actions recursed over %d times", |
2705 | MAX_RESUBMIT_RECURSION); | |
adcf00ba | 2706 | } else if (ctx->resubmits >= MAX_RESUBMITS + MAX_INTERNAL_RESUBMITS) { |
98b07853 | 2707 | VLOG_ERR_RL(&rl, "over %d resubmit actions", MAX_RESUBMITS); |
cc377352 | 2708 | } else if (ofpbuf_size(ctx->xout->odp_actions) > UINT16_MAX) { |
98b07853 | 2709 | VLOG_ERR_RL(&rl, "resubmits yielded over 64 kB of actions"); |
1f317cb5 | 2710 | } else if (ofpbuf_size(&ctx->stack) >= 65536) { |
98b07853 BP |
2711 | VLOG_ERR_RL(&rl, "resubmits yielded over 64 kB of stack"); |
2712 | } else { | |
bd3240ba SH |
2713 | return true; |
2714 | } | |
2715 | ||
2716 | return false; | |
2717 | } | |
2718 | ||
2719 | static void | |
6d328fa2 SH |
2720 | xlate_table_action(struct xlate_ctx *ctx, ofp_port_t in_port, uint8_t table_id, |
2721 | bool may_packet_in, bool honor_table_miss) | |
bd3240ba SH |
2722 | { |
2723 | if (xlate_resubmit_resource_check(ctx)) { | |
4e022ec0 | 2724 | ofp_port_t old_in_port = ctx->xin->flow.in_port.ofp_port; |
3f207910 | 2725 | bool skip_wildcards = ctx->xin->skip_wildcards; |
9583bc14 | 2726 | uint8_t old_table_id = ctx->table_id; |
3f207910 | 2727 | struct rule_dpif *rule; |
6d328fa2 SH |
2728 | enum rule_dpif_lookup_verdict verdict; |
2729 | enum ofputil_port_config config = 0; | |
9583bc14 EJ |
2730 | |
2731 | ctx->table_id = table_id; | |
2732 | ||
bb61b33d BP |
2733 | /* Look up a flow with 'in_port' as the input port. Then restore the |
2734 | * original input port (otherwise OFPP_NORMAL and OFPP_IN_PORT will | |
2735 | * have surprising behavior). */ | |
4e022ec0 | 2736 | ctx->xin->flow.in_port.ofp_port = in_port; |
6d328fa2 SH |
2737 | verdict = rule_dpif_lookup_from_table(ctx->xbridge->ofproto, |
2738 | &ctx->xin->flow, | |
2739 | !skip_wildcards | |
2740 | ? &ctx->xout->wc : NULL, | |
2741 | honor_table_miss, | |
83709dfa | 2742 | &ctx->table_id, &rule, |
d611866c SH |
2743 | ctx->xin->xcache != NULL, |
2744 | ctx->xin->resubmit_stats); | |
4e022ec0 | 2745 | ctx->xin->flow.in_port.ofp_port = old_in_port; |
9583bc14 | 2746 | |
ad3efdcb EJ |
2747 | if (ctx->xin->resubmit_hook) { |
2748 | ctx->xin->resubmit_hook(ctx->xin, rule, ctx->recurse); | |
2749 | } | |
2750 | ||
6d328fa2 SH |
2751 | switch (verdict) { |
2752 | case RULE_DPIF_LOOKUP_VERDICT_MATCH: | |
2753 | goto match; | |
2754 | case RULE_DPIF_LOOKUP_VERDICT_CONTROLLER: | |
2755 | if (may_packet_in) { | |
2756 | struct xport *xport; | |
2757 | ||
2758 | xport = get_ofp_port(ctx->xbridge, | |
2759 | ctx->xin->flow.in_port.ofp_port); | |
2760 | config = xport ? xport->config : 0; | |
2761 | break; | |
2762 | } | |
2763 | /* Fall through to drop */ | |
2764 | case RULE_DPIF_LOOKUP_VERDICT_DROP: | |
2765 | config = OFPUTIL_PC_NO_PACKET_IN; | |
2766 | break; | |
6b83a3c5 SH |
2767 | case RULE_DPIF_LOOKUP_VERDICT_DEFAULT: |
2768 | if (!ofproto_dpif_wants_packet_in_on_miss(ctx->xbridge->ofproto)) { | |
2769 | config = OFPUTIL_PC_NO_PACKET_IN; | |
2770 | } | |
2771 | break; | |
6d328fa2 SH |
2772 | default: |
2773 | OVS_NOT_REACHED(); | |
a2143702 | 2774 | } |
6d328fa2 SH |
2775 | |
2776 | choose_miss_rule(config, ctx->xbridge->miss_rule, | |
83709dfa JR |
2777 | ctx->xbridge->no_packet_in_rule, &rule, |
2778 | ctx->xin->xcache != NULL); | |
6d328fa2 SH |
2779 | |
2780 | match: | |
a2143702 | 2781 | if (rule) { |
83709dfa JR |
2782 | /* Fill in the cache entry here instead of xlate_recursively |
2783 | * to make the reference counting more explicit. We take a | |
2784 | * reference in the lookups above if we are going to cache the | |
2785 | * rule. */ | |
2786 | if (ctx->xin->xcache) { | |
2787 | struct xc_entry *entry; | |
2788 | ||
2789 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_RULE); | |
2790 | entry->u.rule = rule; | |
2791 | } | |
bb61b33d | 2792 | xlate_recursively(ctx, rule); |
ad3efdcb EJ |
2793 | } |
2794 | ||
9583bc14 | 2795 | ctx->table_id = old_table_id; |
98b07853 | 2796 | return; |
9583bc14 | 2797 | } |
98b07853 BP |
2798 | |
2799 | ctx->exit = true; | |
9583bc14 EJ |
2800 | } |
2801 | ||
f4fb341b | 2802 | static void |
1e684d7d RW |
2803 | xlate_group_stats(struct xlate_ctx *ctx, struct group_dpif *group, |
2804 | struct ofputil_bucket *bucket) | |
2805 | { | |
2806 | if (ctx->xin->resubmit_stats) { | |
2807 | group_dpif_credit_stats(group, bucket, ctx->xin->resubmit_stats); | |
2808 | } | |
2809 | if (ctx->xin->xcache) { | |
2810 | struct xc_entry *entry; | |
2811 | ||
2812 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_GROUP); | |
2813 | entry->u.group.group = group_dpif_ref(group); | |
2814 | entry->u.group.bucket = bucket; | |
2815 | } | |
2816 | } | |
2817 | ||
2818 | static void | |
2819 | xlate_group_bucket(struct xlate_ctx *ctx, struct ofputil_bucket *bucket) | |
f4fb341b SH |
2820 | { |
2821 | uint64_t action_list_stub[1024 / 8]; | |
2822 | struct ofpbuf action_list, action_set; | |
2823 | ||
2824 | ofpbuf_use_const(&action_set, bucket->ofpacts, bucket->ofpacts_len); | |
2825 | ofpbuf_use_stub(&action_list, action_list_stub, sizeof action_list_stub); | |
2826 | ||
2827 | ofpacts_execute_action_set(&action_list, &action_set); | |
2828 | ctx->recurse++; | |
1f317cb5 | 2829 | do_xlate_actions(ofpbuf_data(&action_list), ofpbuf_size(&action_list), ctx); |
f4fb341b SH |
2830 | ctx->recurse--; |
2831 | ||
2832 | ofpbuf_uninit(&action_set); | |
2833 | ofpbuf_uninit(&action_list); | |
2834 | } | |
2835 | ||
2836 | static void | |
2837 | xlate_all_group(struct xlate_ctx *ctx, struct group_dpif *group) | |
2838 | { | |
1e684d7d | 2839 | struct ofputil_bucket *bucket; |
f4fb341b SH |
2840 | const struct list *buckets; |
2841 | struct flow old_flow = ctx->xin->flow; | |
2842 | ||
2843 | group_dpif_get_buckets(group, &buckets); | |
2844 | ||
2845 | LIST_FOR_EACH (bucket, list_node, buckets) { | |
2846 | xlate_group_bucket(ctx, bucket); | |
2847 | /* Roll back flow to previous state. | |
2848 | * This is equivalent to cloning the packet for each bucket. | |
2849 | * | |
2850 | * As a side effect any subsequently applied actions will | |
2851 | * also effectively be applied to a clone of the packet taken | |
2852 | * just before applying the all or indirect group. */ | |
2853 | ctx->xin->flow = old_flow; | |
2854 | } | |
1e684d7d | 2855 | xlate_group_stats(ctx, group, NULL); |
f4fb341b SH |
2856 | } |
2857 | ||
dd8cd4b4 SH |
2858 | static void |
2859 | xlate_ff_group(struct xlate_ctx *ctx, struct group_dpif *group) | |
2860 | { | |
1e684d7d | 2861 | struct ofputil_bucket *bucket; |
dd8cd4b4 SH |
2862 | |
2863 | bucket = group_first_live_bucket(ctx, group, 0); | |
2864 | if (bucket) { | |
2865 | xlate_group_bucket(ctx, bucket); | |
1e684d7d | 2866 | xlate_group_stats(ctx, group, bucket); |
dd8cd4b4 SH |
2867 | } |
2868 | } | |
2869 | ||
fe7e5749 SH |
2870 | static void |
2871 | xlate_select_group(struct xlate_ctx *ctx, struct group_dpif *group) | |
2872 | { | |
2873 | struct flow_wildcards *wc = &ctx->xout->wc; | |
1e684d7d | 2874 | struct ofputil_bucket *bucket; |
fe7e5749 SH |
2875 | uint32_t basis; |
2876 | ||
1d1aae0b | 2877 | basis = flow_hash_symmetric_l4(&ctx->xin->flow, 0); |
fe7e5749 SH |
2878 | bucket = group_best_live_bucket(ctx, group, basis); |
2879 | if (bucket) { | |
2880 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); | |
1d1aae0b SS |
2881 | memset(&wc->masks.dl_src, 0xff, sizeof wc->masks.dl_src); |
2882 | memset(&wc->masks.dl_type, 0xff, sizeof wc->masks.dl_type); | |
2883 | memset(&wc->masks.nw_dst, 0xff, sizeof wc->masks.nw_dst); | |
2884 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); | |
2885 | memset(&wc->masks.nw_src, 0xff, sizeof wc->masks.nw_src); | |
2886 | memset(&wc->masks.tp_dst, 0xff, sizeof wc->masks.tp_dst); | |
2887 | memset(&wc->masks.tp_src, 0xff, sizeof wc->masks.tp_src); | |
2888 | memset(&wc->masks.vlan_tci, 0xff, sizeof wc->masks.vlan_tci); | |
2889 | ||
fe7e5749 | 2890 | xlate_group_bucket(ctx, bucket); |
1e684d7d | 2891 | xlate_group_stats(ctx, group, bucket); |
fe7e5749 SH |
2892 | } |
2893 | } | |
2894 | ||
f4fb341b SH |
2895 | static void |
2896 | xlate_group_action__(struct xlate_ctx *ctx, struct group_dpif *group) | |
2897 | { | |
5a070238 BP |
2898 | ctx->in_group = true; |
2899 | ||
f4fb341b SH |
2900 | switch (group_dpif_get_type(group)) { |
2901 | case OFPGT11_ALL: | |
2902 | case OFPGT11_INDIRECT: | |
2903 | xlate_all_group(ctx, group); | |
2904 | break; | |
2905 | case OFPGT11_SELECT: | |
fe7e5749 | 2906 | xlate_select_group(ctx, group); |
f4fb341b | 2907 | break; |
dd8cd4b4 SH |
2908 | case OFPGT11_FF: |
2909 | xlate_ff_group(ctx, group); | |
2910 | break; | |
f4fb341b | 2911 | default: |
428b2edd | 2912 | OVS_NOT_REACHED(); |
f4fb341b | 2913 | } |
809c7548 | 2914 | group_dpif_unref(group); |
5a070238 BP |
2915 | |
2916 | ctx->in_group = false; | |
2917 | } | |
2918 | ||
2919 | static bool | |
2920 | xlate_group_resource_check(struct xlate_ctx *ctx) | |
2921 | { | |
2922 | if (!xlate_resubmit_resource_check(ctx)) { | |
2923 | return false; | |
2924 | } else if (ctx->in_group) { | |
2925 | /* Prevent nested translation of OpenFlow groups. | |
2926 | * | |
2927 | * OpenFlow allows this restriction. We enforce this restriction only | |
2928 | * because, with the current architecture, we would otherwise have to | |
2929 | * take a possibly recursive read lock on the ofgroup rwlock, which is | |
2930 | * unsafe given that POSIX allows taking a read lock to block if there | |
2931 | * is a thread blocked on taking the write lock. Other solutions | |
2932 | * without this restriction are also possible, but seem unwarranted | |
2933 | * given the current limited use of groups. */ | |
2934 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); | |
2935 | ||
2936 | VLOG_ERR_RL(&rl, "cannot recursively translate OpenFlow group"); | |
2937 | return false; | |
2938 | } else { | |
2939 | return true; | |
2940 | } | |
f4fb341b SH |
2941 | } |
2942 | ||
2943 | static bool | |
2944 | xlate_group_action(struct xlate_ctx *ctx, uint32_t group_id) | |
2945 | { | |
5a070238 | 2946 | if (xlate_group_resource_check(ctx)) { |
f4fb341b SH |
2947 | struct group_dpif *group; |
2948 | bool got_group; | |
2949 | ||
2950 | got_group = group_dpif_lookup(ctx->xbridge->ofproto, group_id, &group); | |
2951 | if (got_group) { | |
2952 | xlate_group_action__(ctx, group); | |
2953 | } else { | |
2954 | return true; | |
2955 | } | |
2956 | } | |
2957 | ||
2958 | return false; | |
2959 | } | |
2960 | ||
9583bc14 EJ |
2961 | static void |
2962 | xlate_ofpact_resubmit(struct xlate_ctx *ctx, | |
2963 | const struct ofpact_resubmit *resubmit) | |
2964 | { | |
4e022ec0 | 2965 | ofp_port_t in_port; |
9583bc14 | 2966 | uint8_t table_id; |
adcf00ba AZ |
2967 | bool may_packet_in = false; |
2968 | bool honor_table_miss = false; | |
2969 | ||
2970 | if (ctx->rule && rule_dpif_is_internal(ctx->rule)) { | |
2971 | /* Still allow missed packets to be sent to the controller | |
2972 | * if resubmitting from an internal table. */ | |
2973 | may_packet_in = true; | |
2974 | honor_table_miss = true; | |
2975 | } | |
9583bc14 EJ |
2976 | |
2977 | in_port = resubmit->in_port; | |
2978 | if (in_port == OFPP_IN_PORT) { | |
4e022ec0 | 2979 | in_port = ctx->xin->flow.in_port.ofp_port; |
9583bc14 EJ |
2980 | } |
2981 | ||
2982 | table_id = resubmit->table_id; | |
2983 | if (table_id == 255) { | |
2984 | table_id = ctx->table_id; | |
2985 | } | |
2986 | ||
adcf00ba AZ |
2987 | xlate_table_action(ctx, in_port, table_id, may_packet_in, |
2988 | honor_table_miss); | |
9583bc14 EJ |
2989 | } |
2990 | ||
2991 | static void | |
2992 | flood_packets(struct xlate_ctx *ctx, bool all) | |
2993 | { | |
46c88433 | 2994 | const struct xport *xport; |
9583bc14 | 2995 | |
46c88433 EJ |
2996 | HMAP_FOR_EACH (xport, ofp_node, &ctx->xbridge->xports) { |
2997 | if (xport->ofp_port == ctx->xin->flow.in_port.ofp_port) { | |
9583bc14 EJ |
2998 | continue; |
2999 | } | |
3000 | ||
3001 | if (all) { | |
46c88433 EJ |
3002 | compose_output_action__(ctx, xport->ofp_port, false); |
3003 | } else if (!(xport->config & OFPUTIL_PC_NO_FLOOD)) { | |
3004 | compose_output_action(ctx, xport->ofp_port); | |
9583bc14 EJ |
3005 | } |
3006 | } | |
3007 | ||
3008 | ctx->xout->nf_output_iface = NF_OUT_FLOOD; | |
3009 | } | |
3010 | ||
3011 | static void | |
3012 | execute_controller_action(struct xlate_ctx *ctx, int len, | |
3013 | enum ofp_packet_in_reason reason, | |
3014 | uint16_t controller_id) | |
3015 | { | |
0fb7792a | 3016 | struct ofproto_packet_in *pin; |
91088554 | 3017 | struct dpif_packet *packet; |
758c456d | 3018 | struct pkt_metadata md = PKT_METADATA_INITIALIZER(0); |
9583bc14 | 3019 | |
04594cd5 | 3020 | ctx->xout->slow |= SLOW_CONTROLLER; |
9583bc14 EJ |
3021 | if (!ctx->xin->packet) { |
3022 | return; | |
3023 | } | |
3024 | ||
91088554 | 3025 | packet = dpif_packet_clone_from_ofpbuf(ctx->xin->packet); |
9583bc14 | 3026 | |
7fd91025 | 3027 | ctx->xout->slow |= commit_odp_actions(&ctx->xin->flow, &ctx->base_flow, |
cc377352 | 3028 | ctx->xout->odp_actions, |
d23df9a8 JR |
3029 | &ctx->xout->wc, |
3030 | ctx->xbridge->masked_set_action); | |
9583bc14 | 3031 | |
8cbf4f47 | 3032 | odp_execute_actions(NULL, &packet, 1, false, &md, |
cc377352 EJ |
3033 | ofpbuf_data(ctx->xout->odp_actions), |
3034 | ofpbuf_size(ctx->xout->odp_actions), NULL); | |
9583bc14 | 3035 | |
ada3a58d | 3036 | pin = xmalloc(sizeof *pin); |
91088554 DDP |
3037 | pin->up.packet_len = ofpbuf_size(&packet->ofpbuf); |
3038 | pin->up.packet = ofpbuf_steal_data(&packet->ofpbuf); | |
0fb7792a | 3039 | pin->up.reason = reason; |
0fb7792a | 3040 | pin->up.table_id = ctx->table_id; |
d4fa4e79 BP |
3041 | pin->up.cookie = (ctx->rule |
3042 | ? rule_dpif_get_flow_cookie(ctx->rule) | |
3043 | : OVS_BE64_MAX); | |
0fb7792a | 3044 | |
0fb7792a | 3045 | flow_get_metadata(&ctx->xin->flow, &pin->up.fmd); |
9583bc14 | 3046 | |
f11c7538 | 3047 | pin->controller_id = controller_id; |
d38a3c7b | 3048 | pin->send_len = len; |
32260212 SH |
3049 | /* If a rule is a table-miss rule then this is |
3050 | * a table-miss handled by a table-miss rule. | |
3051 | * | |
3052 | * Else, if rule is internal and has a controller action, | |
3053 | * the later being implied by the rule being processed here, | |
3054 | * then this is a table-miss handled without a table-miss rule. | |
3055 | * | |
3056 | * Otherwise this is not a table-miss. */ | |
3057 | pin->miss_type = OFPROTO_PACKET_IN_NO_MISS; | |
3058 | if (ctx->rule) { | |
3059 | if (rule_dpif_is_table_miss(ctx->rule)) { | |
3060 | pin->miss_type = OFPROTO_PACKET_IN_MISS_FLOW; | |
3061 | } else if (rule_dpif_is_internal(ctx->rule)) { | |
3062 | pin->miss_type = OFPROTO_PACKET_IN_MISS_WITHOUT_FLOW; | |
3063 | } | |
3064 | } | |
ada3a58d | 3065 | ofproto_dpif_send_packet_in(ctx->xbridge->ofproto, pin); |
91088554 | 3066 | dpif_packet_delete(packet); |
9583bc14 EJ |
3067 | } |
3068 | ||
7bbdd84f SH |
3069 | static void |
3070 | compose_recirculate_action(struct xlate_ctx *ctx, | |
3071 | const struct ofpact *ofpacts_base, | |
3072 | const struct ofpact *ofpact_current, | |
3073 | size_t ofpacts_base_len) | |
3074 | { | |
3075 | uint32_t id; | |
3076 | int error; | |
3077 | unsigned ofpacts_len; | |
3078 | struct match match; | |
3079 | struct rule *rule; | |
3080 | struct ofpbuf ofpacts; | |
3081 | ||
3082 | ctx->exit = true; | |
3083 | ||
3084 | ofpacts_len = ofpacts_base_len - | |
3085 | ((uint8_t *)ofpact_current - (uint8_t *)ofpacts_base); | |
3086 | ||
3087 | if (ctx->rule) { | |
3088 | id = rule_dpif_get_recirc_id(ctx->rule); | |
3089 | } else { | |
3090 | /* In the case where ctx has no rule then allocate a recirc id. | |
3091 | * The life-cycle of this recirc id is managed by associating it | |
3092 | * with the internal rule that is created to to handle | |
3093 | * recirculation below. | |
3094 | * | |
3095 | * The known use-case of this is packet_out which | |
3096 | * translates actions without a rule */ | |
3097 | id = ofproto_dpif_alloc_recirc_id(ctx->xbridge->ofproto); | |
3098 | } | |
3099 | if (!id) { | |
3100 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
3101 | VLOG_ERR_RL(&rl, "Failed to allocate recirculation id"); | |
3102 | return; | |
3103 | } | |
3104 | ||
3105 | match_init_catchall(&match); | |
3106 | match_set_recirc_id(&match, id); | |
3107 | ofpbuf_use_const(&ofpacts, ofpact_current, ofpacts_len); | |
3108 | error = ofproto_dpif_add_internal_flow(ctx->xbridge->ofproto, &match, | |
3109 | RECIRC_RULE_PRIORITY, | |
3110 | RECIRC_TIMEOUT, &ofpacts, &rule); | |
3111 | if (error) { | |
3112 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
3113 | VLOG_ERR_RL(&rl, "Failed to add post recirculation flow %s", | |
3114 | match_to_string(&match, 0)); | |
3115 | return; | |
3116 | } | |
3117 | /* If ctx has no rule then associate the recirc id, which | |
3118 | * was allocated above, with the internal rule. This allows | |
3119 | * the recirc id to be released when the internal rule times out. */ | |
3120 | if (!ctx->rule) { | |
3121 | rule_set_recirc_id(rule, id); | |
3122 | } | |
3123 | ||
3124 | ctx->xout->slow |= commit_odp_actions(&ctx->xin->flow, &ctx->base_flow, | |
cc377352 | 3125 | ctx->xout->odp_actions, |
d23df9a8 JR |
3126 | &ctx->xout->wc, |
3127 | ctx->xbridge->masked_set_action); | |
cc377352 | 3128 | nl_msg_put_u32(ctx->xout->odp_actions, OVS_ACTION_ATTR_RECIRC, id); |
7bbdd84f SH |
3129 | } |
3130 | ||
8bfd0fda BP |
3131 | static void |
3132 | compose_mpls_push_action(struct xlate_ctx *ctx, struct ofpact_push_mpls *mpls) | |
9583bc14 | 3133 | { |
33bf9176 BP |
3134 | struct flow_wildcards *wc = &ctx->xout->wc; |
3135 | struct flow *flow = &ctx->xin->flow; | |
8bfd0fda | 3136 | int n; |
33bf9176 | 3137 | |
8bfd0fda | 3138 | ovs_assert(eth_type_mpls(mpls->ethertype)); |
b0a17866 | 3139 | |
8bfd0fda BP |
3140 | n = flow_count_mpls_labels(flow, wc); |
3141 | if (!n) { | |
8bfd0fda | 3142 | ctx->xout->slow |= commit_odp_actions(flow, &ctx->base_flow, |
cc377352 | 3143 | ctx->xout->odp_actions, |
d23df9a8 JR |
3144 | &ctx->xout->wc, |
3145 | ctx->xbridge->masked_set_action); | |
8bfd0fda BP |
3146 | } else if (n >= FLOW_MAX_MPLS_LABELS) { |
3147 | if (ctx->xin->packet != NULL) { | |
3148 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
3149 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet on which an " | |
3150 | "MPLS push action can't be performed as it would " | |
3151 | "have more MPLS LSEs than the %d supported.", | |
3152 | ctx->xbridge->name, FLOW_MAX_MPLS_LABELS); | |
9583bc14 | 3153 | } |
8bfd0fda BP |
3154 | ctx->exit = true; |
3155 | return; | |
3156 | } else if (n >= ctx->xbridge->max_mpls_depth) { | |
3157 | COVERAGE_INC(xlate_actions_mpls_overflow); | |
3158 | ctx->xout->slow |= SLOW_ACTION; | |
9583bc14 | 3159 | } |
b0a17866 | 3160 | |
8bfd0fda | 3161 | flow_push_mpls(flow, n, mpls->ethertype, wc); |
9583bc14 EJ |
3162 | } |
3163 | ||
8bfd0fda | 3164 | static void |
9cfef3d0 | 3165 | compose_mpls_pop_action(struct xlate_ctx *ctx, ovs_be16 eth_type) |
9583bc14 | 3166 | { |
33bf9176 | 3167 | struct flow_wildcards *wc = &ctx->xout->wc; |
8bfd0fda BP |
3168 | struct flow *flow = &ctx->xin->flow; |
3169 | int n = flow_count_mpls_labels(flow, wc); | |
33bf9176 | 3170 | |
7bbdd84f SH |
3171 | if (flow_pop_mpls(flow, n, eth_type, wc)) { |
3172 | if (ctx->xbridge->enable_recirc && !eth_type_mpls(eth_type)) { | |
3173 | ctx->was_mpls = true; | |
3174 | } | |
3175 | } else if (n >= FLOW_MAX_MPLS_LABELS) { | |
8bfd0fda BP |
3176 | if (ctx->xin->packet != NULL) { |
3177 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
3178 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet on which an " | |
3179 | "MPLS pop action can't be performed as it has " | |
3180 | "more MPLS LSEs than the %d supported.", | |
3181 | ctx->xbridge->name, FLOW_MAX_MPLS_LABELS); | |
3182 | } | |
3183 | ctx->exit = true; | |
cc377352 | 3184 | ofpbuf_clear(ctx->xout->odp_actions); |
9583bc14 EJ |
3185 | } |
3186 | } | |
3187 | ||
3188 | static bool | |
3189 | compose_dec_ttl(struct xlate_ctx *ctx, struct ofpact_cnt_ids *ids) | |
3190 | { | |
33bf9176 BP |
3191 | struct flow *flow = &ctx->xin->flow; |
3192 | ||
3193 | if (!is_ip_any(flow)) { | |
9583bc14 EJ |
3194 | return false; |
3195 | } | |
3196 | ||
1dd35f8a | 3197 | ctx->xout->wc.masks.nw_ttl = 0xff; |
33bf9176 BP |
3198 | if (flow->nw_ttl > 1) { |
3199 | flow->nw_ttl--; | |
9583bc14 EJ |
3200 | return false; |
3201 | } else { | |
3202 | size_t i; | |
3203 | ||
3204 | for (i = 0; i < ids->n_controllers; i++) { | |
3205 | execute_controller_action(ctx, UINT16_MAX, OFPR_INVALID_TTL, | |
3206 | ids->cnt_ids[i]); | |
3207 | } | |
3208 | ||
3209 | /* Stop processing for current table. */ | |
3210 | return true; | |
3211 | } | |
3212 | } | |
3213 | ||
8bfd0fda | 3214 | static void |
097d4939 JR |
3215 | compose_set_mpls_label_action(struct xlate_ctx *ctx, ovs_be32 label) |
3216 | { | |
8bfd0fda BP |
3217 | if (eth_type_mpls(ctx->xin->flow.dl_type)) { |
3218 | ctx->xout->wc.masks.mpls_lse[0] |= htonl(MPLS_LABEL_MASK); | |
3219 | set_mpls_lse_label(&ctx->xin->flow.mpls_lse[0], label); | |
097d4939 | 3220 | } |
097d4939 JR |
3221 | } |
3222 | ||
8bfd0fda | 3223 | static void |
097d4939 JR |
3224 | compose_set_mpls_tc_action(struct xlate_ctx *ctx, uint8_t tc) |
3225 | { | |
8bfd0fda BP |
3226 | if (eth_type_mpls(ctx->xin->flow.dl_type)) { |
3227 | ctx->xout->wc.masks.mpls_lse[0] |= htonl(MPLS_TC_MASK); | |
3228 | set_mpls_lse_tc(&ctx->xin->flow.mpls_lse[0], tc); | |
097d4939 | 3229 | } |
097d4939 JR |
3230 | } |
3231 | ||
8bfd0fda | 3232 | static void |
9cfef3d0 | 3233 | compose_set_mpls_ttl_action(struct xlate_ctx *ctx, uint8_t ttl) |
9583bc14 | 3234 | { |
8bfd0fda BP |
3235 | if (eth_type_mpls(ctx->xin->flow.dl_type)) { |
3236 | ctx->xout->wc.masks.mpls_lse[0] |= htonl(MPLS_TTL_MASK); | |
3237 | set_mpls_lse_ttl(&ctx->xin->flow.mpls_lse[0], ttl); | |
b0a17866 | 3238 | } |
9583bc14 EJ |
3239 | } |
3240 | ||
3241 | static bool | |
9cfef3d0 | 3242 | compose_dec_mpls_ttl_action(struct xlate_ctx *ctx) |
9583bc14 | 3243 | { |
33bf9176 | 3244 | struct flow *flow = &ctx->xin->flow; |
1dd35f8a JP |
3245 | struct flow_wildcards *wc = &ctx->xout->wc; |
3246 | ||
8bfd0fda | 3247 | if (eth_type_mpls(flow->dl_type)) { |
22d38fca JR |
3248 | uint8_t ttl = mpls_lse_to_ttl(flow->mpls_lse[0]); |
3249 | ||
3250 | wc->masks.mpls_lse[0] |= htonl(MPLS_TTL_MASK); | |
8bfd0fda BP |
3251 | if (ttl > 1) { |
3252 | ttl--; | |
3253 | set_mpls_lse_ttl(&flow->mpls_lse[0], ttl); | |
3254 | return false; | |
3255 | } else { | |
3256 | execute_controller_action(ctx, UINT16_MAX, OFPR_INVALID_TTL, 0); | |
8bfd0fda | 3257 | } |
9583bc14 | 3258 | } |
22d38fca JR |
3259 | |
3260 | /* Stop processing for current table. */ | |
3261 | return true; | |
9583bc14 EJ |
3262 | } |
3263 | ||
3264 | static void | |
3265 | xlate_output_action(struct xlate_ctx *ctx, | |
4e022ec0 | 3266 | ofp_port_t port, uint16_t max_len, bool may_packet_in) |
9583bc14 | 3267 | { |
4e022ec0 | 3268 | ofp_port_t prev_nf_output_iface = ctx->xout->nf_output_iface; |
9583bc14 EJ |
3269 | |
3270 | ctx->xout->nf_output_iface = NF_OUT_DROP; | |
3271 | ||
3272 | switch (port) { | |
3273 | case OFPP_IN_PORT: | |
4e022ec0 | 3274 | compose_output_action(ctx, ctx->xin->flow.in_port.ofp_port); |
9583bc14 EJ |
3275 | break; |
3276 | case OFPP_TABLE: | |
4e022ec0 | 3277 | xlate_table_action(ctx, ctx->xin->flow.in_port.ofp_port, |
6d328fa2 | 3278 | 0, may_packet_in, true); |
9583bc14 EJ |
3279 | break; |
3280 | case OFPP_NORMAL: | |
3281 | xlate_normal(ctx); | |
3282 | break; | |
3283 | case OFPP_FLOOD: | |
3284 | flood_packets(ctx, false); | |
3285 | break; | |
3286 | case OFPP_ALL: | |
3287 | flood_packets(ctx, true); | |
3288 | break; | |
3289 | case OFPP_CONTROLLER: | |
3290 | execute_controller_action(ctx, max_len, OFPR_ACTION, 0); | |
3291 | break; | |
3292 | case OFPP_NONE: | |
3293 | break; | |
3294 | case OFPP_LOCAL: | |
3295 | default: | |
4e022ec0 | 3296 | if (port != ctx->xin->flow.in_port.ofp_port) { |
9583bc14 EJ |
3297 | compose_output_action(ctx, port); |
3298 | } else { | |
3299 | xlate_report(ctx, "skipping output to input port"); | |
3300 | } | |
3301 | break; | |
3302 | } | |
3303 | ||
3304 | if (prev_nf_output_iface == NF_OUT_FLOOD) { | |
3305 | ctx->xout->nf_output_iface = NF_OUT_FLOOD; | |
3306 | } else if (ctx->xout->nf_output_iface == NF_OUT_DROP) { | |
3307 | ctx->xout->nf_output_iface = prev_nf_output_iface; | |
3308 | } else if (prev_nf_output_iface != NF_OUT_DROP && | |
3309 | ctx->xout->nf_output_iface != NF_OUT_FLOOD) { | |
3310 | ctx->xout->nf_output_iface = NF_OUT_MULTI; | |
3311 | } | |
3312 | } | |
3313 | ||
3314 | static void | |
3315 | xlate_output_reg_action(struct xlate_ctx *ctx, | |
3316 | const struct ofpact_output_reg *or) | |
3317 | { | |
3318 | uint64_t port = mf_get_subfield(&or->src, &ctx->xin->flow); | |
3319 | if (port <= UINT16_MAX) { | |
3320 | union mf_subvalue value; | |
3321 | ||
3322 | memset(&value, 0xff, sizeof value); | |
3323 | mf_write_subfield_flow(&or->src, &value, &ctx->xout->wc.masks); | |
4e022ec0 AW |
3324 | xlate_output_action(ctx, u16_to_ofp(port), |
3325 | or->max_len, false); | |
9583bc14 EJ |
3326 | } |
3327 | } | |
3328 | ||
3329 | static void | |
3330 | xlate_enqueue_action(struct xlate_ctx *ctx, | |
3331 | const struct ofpact_enqueue *enqueue) | |
3332 | { | |
4e022ec0 | 3333 | ofp_port_t ofp_port = enqueue->port; |
9583bc14 EJ |
3334 | uint32_t queue_id = enqueue->queue; |
3335 | uint32_t flow_priority, priority; | |
3336 | int error; | |
3337 | ||
3338 | /* Translate queue to priority. */ | |
89a8a7f0 | 3339 | error = dpif_queue_to_priority(ctx->xbridge->dpif, queue_id, &priority); |
9583bc14 EJ |
3340 | if (error) { |
3341 | /* Fall back to ordinary output action. */ | |
3342 | xlate_output_action(ctx, enqueue->port, 0, false); | |
3343 | return; | |
3344 | } | |
3345 | ||
3346 | /* Check output port. */ | |
3347 | if (ofp_port == OFPP_IN_PORT) { | |
4e022ec0 AW |
3348 | ofp_port = ctx->xin->flow.in_port.ofp_port; |
3349 | } else if (ofp_port == ctx->xin->flow.in_port.ofp_port) { | |
9583bc14 EJ |
3350 | return; |
3351 | } | |
3352 | ||
3353 | /* Add datapath actions. */ | |
3354 | flow_priority = ctx->xin->flow.skb_priority; | |
3355 | ctx->xin->flow.skb_priority = priority; | |
3356 | compose_output_action(ctx, ofp_port); | |
3357 | ctx->xin->flow.skb_priority = flow_priority; | |
3358 | ||
3359 | /* Update NetFlow output port. */ | |
3360 | if (ctx->xout->nf_output_iface == NF_OUT_DROP) { | |
3361 | ctx->xout->nf_output_iface = ofp_port; | |
3362 | } else if (ctx->xout->nf_output_iface != NF_OUT_FLOOD) { | |
3363 | ctx->xout->nf_output_iface = NF_OUT_MULTI; | |
3364 | } | |
3365 | } | |
3366 | ||
3367 | static void | |
3368 | xlate_set_queue_action(struct xlate_ctx *ctx, uint32_t queue_id) | |
3369 | { | |
3370 | uint32_t skb_priority; | |
3371 | ||
89a8a7f0 | 3372 | if (!dpif_queue_to_priority(ctx->xbridge->dpif, queue_id, &skb_priority)) { |
9583bc14 EJ |
3373 | ctx->xin->flow.skb_priority = skb_priority; |
3374 | } else { | |
3375 | /* Couldn't translate queue to a priority. Nothing to do. A warning | |
3376 | * has already been logged. */ | |
3377 | } | |
3378 | } | |
3379 | ||
3380 | static bool | |
46c88433 | 3381 | slave_enabled_cb(ofp_port_t ofp_port, void *xbridge_) |
9583bc14 | 3382 | { |
46c88433 EJ |
3383 | const struct xbridge *xbridge = xbridge_; |
3384 | struct xport *port; | |
9583bc14 EJ |
3385 | |
3386 | switch (ofp_port) { | |
3387 | case OFPP_IN_PORT: | |
3388 | case OFPP_TABLE: | |
3389 | case OFPP_NORMAL: | |
3390 | case OFPP_FLOOD: | |
3391 | case OFPP_ALL: | |
3392 | case OFPP_NONE: | |
3393 | return true; | |
3394 | case OFPP_CONTROLLER: /* Not supported by the bundle action. */ | |
3395 | return false; | |
3396 | default: | |
46c88433 | 3397 | port = get_ofp_port(xbridge, ofp_port); |
9583bc14 EJ |
3398 | return port ? port->may_enable : false; |
3399 | } | |
3400 | } | |
3401 | ||
3402 | static void | |
3403 | xlate_bundle_action(struct xlate_ctx *ctx, | |
3404 | const struct ofpact_bundle *bundle) | |
3405 | { | |
4e022ec0 | 3406 | ofp_port_t port; |
9583bc14 EJ |
3407 | |
3408 | port = bundle_execute(bundle, &ctx->xin->flow, &ctx->xout->wc, | |
46c88433 EJ |
3409 | slave_enabled_cb, |
3410 | CONST_CAST(struct xbridge *, ctx->xbridge)); | |
9583bc14 | 3411 | if (bundle->dst.field) { |
f74e7df7 JP |
3412 | nxm_reg_load(&bundle->dst, ofp_to_u16(port), &ctx->xin->flow, |
3413 | &ctx->xout->wc); | |
9583bc14 EJ |
3414 | } else { |
3415 | xlate_output_action(ctx, port, 0, false); | |
3416 | } | |
3417 | } | |
3418 | ||
3419 | static void | |
4165b5e0 JS |
3420 | xlate_learn_action__(struct xlate_ctx *ctx, const struct ofpact_learn *learn, |
3421 | struct ofputil_flow_mod *fm, struct ofpbuf *ofpacts) | |
9583bc14 | 3422 | { |
4165b5e0 JS |
3423 | learn_execute(learn, &ctx->xin->flow, fm, ofpacts); |
3424 | if (ctx->xin->may_learn) { | |
3425 | ofproto_dpif_flow_mod(ctx->xbridge->ofproto, fm); | |
3426 | } | |
3427 | } | |
9583bc14 | 3428 | |
4165b5e0 JS |
3429 | static void |
3430 | xlate_learn_action(struct xlate_ctx *ctx, const struct ofpact_learn *learn) | |
3431 | { | |
9583bc14 | 3432 | ctx->xout->has_learn = true; |
9583bc14 EJ |
3433 | learn_mask(learn, &ctx->xout->wc); |
3434 | ||
b256dc52 JS |
3435 | if (ctx->xin->xcache) { |
3436 | struct xc_entry *entry; | |
3437 | ||
3438 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_LEARN); | |
4165b5e0 JS |
3439 | entry->u.learn.ofproto = ctx->xbridge->ofproto; |
3440 | entry->u.learn.fm = xmalloc(sizeof *entry->u.learn.fm); | |
3441 | entry->u.learn.ofpacts = ofpbuf_new(64); | |
3442 | xlate_learn_action__(ctx, learn, entry->u.learn.fm, | |
3443 | entry->u.learn.ofpacts); | |
3444 | } else if (ctx->xin->may_learn) { | |
3445 | uint64_t ofpacts_stub[1024 / 8]; | |
3446 | struct ofputil_flow_mod fm; | |
3447 | struct ofpbuf ofpacts; | |
3448 | ||
3449 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); | |
3450 | xlate_learn_action__(ctx, learn, &fm, &ofpacts); | |
3451 | ofpbuf_uninit(&ofpacts); | |
b256dc52 JS |
3452 | } |
3453 | } | |
3454 | ||
3455 | static void | |
3456 | xlate_fin_timeout__(struct rule_dpif *rule, uint16_t tcp_flags, | |
3457 | uint16_t idle_timeout, uint16_t hard_timeout) | |
3458 | { | |
3459 | if (tcp_flags & (TCP_FIN | TCP_RST)) { | |
3460 | rule_dpif_reduce_timeouts(rule, idle_timeout, hard_timeout); | |
3461 | } | |
9583bc14 EJ |
3462 | } |
3463 | ||
9583bc14 EJ |
3464 | static void |
3465 | xlate_fin_timeout(struct xlate_ctx *ctx, | |
3466 | const struct ofpact_fin_timeout *oft) | |
3467 | { | |
b256dc52 JS |
3468 | if (ctx->rule) { |
3469 | xlate_fin_timeout__(ctx->rule, ctx->xin->tcp_flags, | |
3470 | oft->fin_idle_timeout, oft->fin_hard_timeout); | |
3471 | if (ctx->xin->xcache) { | |
3472 | struct xc_entry *entry; | |
3473 | ||
3474 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_FIN_TIMEOUT); | |
83709dfa JR |
3475 | /* XC_RULE already holds a reference on the rule, none is taken |
3476 | * here. */ | |
b256dc52 JS |
3477 | entry->u.fin.rule = ctx->rule; |
3478 | entry->u.fin.idle = oft->fin_idle_timeout; | |
3479 | entry->u.fin.hard = oft->fin_hard_timeout; | |
b256dc52 | 3480 | } |
9583bc14 EJ |
3481 | } |
3482 | } | |
3483 | ||
3484 | static void | |
3485 | xlate_sample_action(struct xlate_ctx *ctx, | |
3486 | const struct ofpact_sample *os) | |
3487 | { | |
3488 | union user_action_cookie cookie; | |
3489 | /* Scale the probability from 16-bit to 32-bit while representing | |
3490 | * the same percentage. */ | |
3491 | uint32_t probability = (os->probability << 16) | os->probability; | |
3492 | ||
4b97b70d BP |
3493 | if (!ctx->xbridge->variable_length_userdata) { |
3494 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); | |
3495 | ||
3496 | VLOG_ERR_RL(&rl, "ignoring NXAST_SAMPLE action because datapath " | |
3497 | "lacks support (needs Linux 3.10+ or kernel module from " | |
3498 | "OVS 1.11+)"); | |
3499 | return; | |
3500 | } | |
3501 | ||
7fd91025 | 3502 | ctx->xout->slow |= commit_odp_actions(&ctx->xin->flow, &ctx->base_flow, |
cc377352 | 3503 | ctx->xout->odp_actions, |
d23df9a8 JR |
3504 | &ctx->xout->wc, |
3505 | ctx->xbridge->masked_set_action); | |
9583bc14 EJ |
3506 | |
3507 | compose_flow_sample_cookie(os->probability, os->collector_set_id, | |
3508 | os->obs_domain_id, os->obs_point_id, &cookie); | |
cc377352 | 3509 | compose_sample_action(ctx->xbridge, ctx->xout->odp_actions, &ctx->xin->flow, |
8b7ea2d4 WZ |
3510 | probability, &cookie, sizeof cookie.flow_sample, |
3511 | ODPP_NONE); | |
9583bc14 EJ |
3512 | } |
3513 | ||
3514 | static bool | |
46c88433 | 3515 | may_receive(const struct xport *xport, struct xlate_ctx *ctx) |
9583bc14 | 3516 | { |
bbbca389 | 3517 | if (xport->config & (is_stp(&ctx->xin->flow) |
46c88433 EJ |
3518 | ? OFPUTIL_PC_NO_RECV_STP |
3519 | : OFPUTIL_PC_NO_RECV)) { | |
9583bc14 EJ |
3520 | return false; |
3521 | } | |
3522 | ||
3523 | /* Only drop packets here if both forwarding and learning are | |
3524 | * disabled. If just learning is enabled, we need to have | |
3525 | * OFPP_NORMAL and the learning action have a look at the packet | |
3526 | * before we can drop it. */ | |
9efd308e DV |
3527 | if ((!xport_stp_forward_state(xport) && !xport_stp_learn_state(xport)) || |
3528 | (!xport_rstp_forward_state(xport) && !xport_rstp_learn_state(xport))) { | |
9583bc14 EJ |
3529 | return false; |
3530 | } | |
3531 | ||
3532 | return true; | |
3533 | } | |
3534 | ||
7fdb60a7 SH |
3535 | static void |
3536 | xlate_write_actions(struct xlate_ctx *ctx, const struct ofpact *a) | |
3537 | { | |
3538 | struct ofpact_nest *on = ofpact_get_WRITE_ACTIONS(a); | |
3539 | ofpbuf_put(&ctx->action_set, on->actions, ofpact_nest_get_action_len(on)); | |
3540 | ofpact_pad(&ctx->action_set); | |
3541 | } | |
3542 | ||
3543 | static void | |
3544 | xlate_action_set(struct xlate_ctx *ctx) | |
3545 | { | |
3546 | uint64_t action_list_stub[1024 / 64]; | |
3547 | struct ofpbuf action_list; | |
3548 | ||
3549 | ofpbuf_use_stub(&action_list, action_list_stub, sizeof action_list_stub); | |
3550 | ofpacts_execute_action_set(&action_list, &ctx->action_set); | |
1f317cb5 | 3551 | do_xlate_actions(ofpbuf_data(&action_list), ofpbuf_size(&action_list), ctx); |
7fdb60a7 SH |
3552 | ofpbuf_uninit(&action_list); |
3553 | } | |
3554 | ||
7bbdd84f SH |
3555 | static bool |
3556 | ofpact_needs_recirculation_after_mpls(const struct xlate_ctx *ctx, | |
3557 | const struct ofpact *a) | |
3558 | { | |
3559 | struct flow_wildcards *wc = &ctx->xout->wc; | |
3560 | struct flow *flow = &ctx->xin->flow; | |
3561 | ||
3562 | switch (a->type) { | |
3563 | case OFPACT_OUTPUT: | |
3564 | case OFPACT_GROUP: | |
3565 | case OFPACT_CONTROLLER: | |
3566 | case OFPACT_STRIP_VLAN: | |
3567 | case OFPACT_SET_VLAN_PCP: | |
3568 | case OFPACT_SET_VLAN_VID: | |
3569 | case OFPACT_ENQUEUE: | |
3570 | case OFPACT_PUSH_VLAN: | |
3571 | case OFPACT_SET_ETH_SRC: | |
3572 | case OFPACT_SET_ETH_DST: | |
3573 | case OFPACT_SET_TUNNEL: | |
3574 | case OFPACT_SET_QUEUE: | |
3575 | case OFPACT_POP_QUEUE: | |
3576 | case OFPACT_POP_MPLS: | |
3577 | case OFPACT_DEC_MPLS_TTL: | |
3578 | case OFPACT_SET_MPLS_TTL: | |
3579 | case OFPACT_SET_MPLS_TC: | |
3580 | case OFPACT_SET_MPLS_LABEL: | |
3581 | case OFPACT_NOTE: | |
3582 | case OFPACT_OUTPUT_REG: | |
3583 | case OFPACT_EXIT: | |
3584 | case OFPACT_METER: | |
3585 | case OFPACT_WRITE_METADATA: | |
3586 | case OFPACT_WRITE_ACTIONS: | |
3587 | case OFPACT_CLEAR_ACTIONS: | |
3588 | case OFPACT_SAMPLE: | |
3589 | return false; | |
3590 | ||
3591 | case OFPACT_SET_IPV4_SRC: | |
3592 | case OFPACT_SET_IPV4_DST: | |
3593 | case OFPACT_SET_IP_DSCP: | |
3594 | case OFPACT_SET_IP_ECN: | |
3595 | case OFPACT_SET_IP_TTL: | |
3596 | case OFPACT_SET_L4_SRC_PORT: | |
3597 | case OFPACT_SET_L4_DST_PORT: | |
3598 | case OFPACT_RESUBMIT: | |
3599 | case OFPACT_STACK_PUSH: | |
3600 | case OFPACT_STACK_POP: | |
3601 | case OFPACT_DEC_TTL: | |
3602 | case OFPACT_MULTIPATH: | |
3603 | case OFPACT_BUNDLE: | |
3604 | case OFPACT_LEARN: | |
3605 | case OFPACT_FIN_TIMEOUT: | |
3606 | case OFPACT_GOTO_TABLE: | |
3607 | return true; | |
3608 | ||
3609 | case OFPACT_REG_MOVE: | |
3610 | return (mf_is_l3_or_higher(ofpact_get_REG_MOVE(a)->dst.field) || | |
3611 | mf_is_l3_or_higher(ofpact_get_REG_MOVE(a)->src.field)); | |
3612 | ||
7bbdd84f SH |
3613 | case OFPACT_SET_FIELD: |
3614 | return mf_is_l3_or_higher(ofpact_get_SET_FIELD(a)->field); | |
3615 | ||
3616 | case OFPACT_PUSH_MPLS: | |
3617 | /* Recirculate if it is an IP packet with a zero ttl. This may | |
3618 | * indicate that the packet was previously MPLS and an MPLS pop action | |
3619 | * converted it to IP. In this case recirculating should reveal the IP | |
3620 | * TTL which is used as the basis for a new MPLS LSE. */ | |
3621 | return (!flow_count_mpls_labels(flow, wc) | |
3622 | && flow->nw_ttl == 0 | |
3623 | && is_ip_any(flow)); | |
3624 | } | |
3625 | ||
3626 | OVS_NOT_REACHED(); | |
3627 | } | |
3628 | ||
9583bc14 EJ |
3629 | static void |
3630 | do_xlate_actions(const struct ofpact *ofpacts, size_t ofpacts_len, | |
3631 | struct xlate_ctx *ctx) | |
3632 | { | |
33bf9176 BP |
3633 | struct flow_wildcards *wc = &ctx->xout->wc; |
3634 | struct flow *flow = &ctx->xin->flow; | |
9583bc14 EJ |
3635 | const struct ofpact *a; |
3636 | ||
f47ea021 JR |
3637 | /* dl_type already in the mask, not set below. */ |
3638 | ||
9583bc14 EJ |
3639 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { |
3640 | struct ofpact_controller *controller; | |
3641 | const struct ofpact_metadata *metadata; | |
b2dd70be JR |
3642 | const struct ofpact_set_field *set_field; |
3643 | const struct mf_field *mf; | |
9583bc14 EJ |
3644 | |
3645 | if (ctx->exit) { | |
3646 | break; | |
3647 | } | |
3648 | ||
7bbdd84f SH |
3649 | if (ctx->was_mpls && ofpact_needs_recirculation_after_mpls(ctx, a)) { |
3650 | compose_recirculate_action(ctx, ofpacts, a, ofpacts_len); | |
3651 | return; | |
3652 | } | |
3653 | ||
9583bc14 EJ |
3654 | switch (a->type) { |
3655 | case OFPACT_OUTPUT: | |
3656 | xlate_output_action(ctx, ofpact_get_OUTPUT(a)->port, | |
3657 | ofpact_get_OUTPUT(a)->max_len, true); | |
3658 | break; | |
3659 | ||
7395c052 | 3660 | case OFPACT_GROUP: |
f4fb341b SH |
3661 | if (xlate_group_action(ctx, ofpact_get_GROUP(a)->group_id)) { |
3662 | return; | |
3663 | } | |
7395c052 NZ |
3664 | break; |
3665 | ||
9583bc14 EJ |
3666 | case OFPACT_CONTROLLER: |
3667 | controller = ofpact_get_CONTROLLER(a); | |
3668 | execute_controller_action(ctx, controller->max_len, | |
3669 | controller->reason, | |
3670 | controller->controller_id); | |
3671 | break; | |
3672 | ||
3673 | case OFPACT_ENQUEUE: | |
16194afd DDP |
3674 | memset(&wc->masks.skb_priority, 0xff, |
3675 | sizeof wc->masks.skb_priority); | |
9583bc14 EJ |
3676 | xlate_enqueue_action(ctx, ofpact_get_ENQUEUE(a)); |
3677 | break; | |
3678 | ||
3679 | case OFPACT_SET_VLAN_VID: | |
f74e7df7 | 3680 | wc->masks.vlan_tci |= htons(VLAN_VID_MASK | VLAN_CFI); |
ca287d20 JR |
3681 | if (flow->vlan_tci & htons(VLAN_CFI) || |
3682 | ofpact_get_SET_VLAN_VID(a)->push_vlan_if_needed) { | |
3683 | flow->vlan_tci &= ~htons(VLAN_VID_MASK); | |
3684 | flow->vlan_tci |= (htons(ofpact_get_SET_VLAN_VID(a)->vlan_vid) | |
3685 | | htons(VLAN_CFI)); | |
3686 | } | |
9583bc14 EJ |
3687 | break; |
3688 | ||
3689 | case OFPACT_SET_VLAN_PCP: | |
f74e7df7 | 3690 | wc->masks.vlan_tci |= htons(VLAN_PCP_MASK | VLAN_CFI); |
ca287d20 JR |
3691 | if (flow->vlan_tci & htons(VLAN_CFI) || |
3692 | ofpact_get_SET_VLAN_PCP(a)->push_vlan_if_needed) { | |
3693 | flow->vlan_tci &= ~htons(VLAN_PCP_MASK); | |
3694 | flow->vlan_tci |= htons((ofpact_get_SET_VLAN_PCP(a)->vlan_pcp | |
3695 | << VLAN_PCP_SHIFT) | VLAN_CFI); | |
3696 | } | |
9583bc14 EJ |
3697 | break; |
3698 | ||
3699 | case OFPACT_STRIP_VLAN: | |
f74e7df7 | 3700 | memset(&wc->masks.vlan_tci, 0xff, sizeof wc->masks.vlan_tci); |
33bf9176 | 3701 | flow->vlan_tci = htons(0); |
9583bc14 EJ |
3702 | break; |
3703 | ||
3704 | case OFPACT_PUSH_VLAN: | |
3705 | /* XXX 802.1AD(QinQ) */ | |
f74e7df7 | 3706 | memset(&wc->masks.vlan_tci, 0xff, sizeof wc->masks.vlan_tci); |
33bf9176 | 3707 | flow->vlan_tci = htons(VLAN_CFI); |
9583bc14 EJ |
3708 | break; |
3709 | ||
3710 | case OFPACT_SET_ETH_SRC: | |
f74e7df7 | 3711 | memset(&wc->masks.dl_src, 0xff, sizeof wc->masks.dl_src); |
33bf9176 | 3712 | memcpy(flow->dl_src, ofpact_get_SET_ETH_SRC(a)->mac, ETH_ADDR_LEN); |
9583bc14 EJ |
3713 | break; |
3714 | ||
3715 | case OFPACT_SET_ETH_DST: | |
f74e7df7 | 3716 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); |
33bf9176 | 3717 | memcpy(flow->dl_dst, ofpact_get_SET_ETH_DST(a)->mac, ETH_ADDR_LEN); |
9583bc14 EJ |
3718 | break; |
3719 | ||
3720 | case OFPACT_SET_IPV4_SRC: | |
33bf9176 | 3721 | if (flow->dl_type == htons(ETH_TYPE_IP)) { |
f47ea021 | 3722 | memset(&wc->masks.nw_src, 0xff, sizeof wc->masks.nw_src); |
33bf9176 | 3723 | flow->nw_src = ofpact_get_SET_IPV4_SRC(a)->ipv4; |
9583bc14 EJ |
3724 | } |
3725 | break; | |
3726 | ||
3727 | case OFPACT_SET_IPV4_DST: | |
33bf9176 | 3728 | if (flow->dl_type == htons(ETH_TYPE_IP)) { |
f47ea021 | 3729 | memset(&wc->masks.nw_dst, 0xff, sizeof wc->masks.nw_dst); |
33bf9176 | 3730 | flow->nw_dst = ofpact_get_SET_IPV4_DST(a)->ipv4; |
9583bc14 EJ |
3731 | } |
3732 | break; | |
3733 | ||
04f01c24 BP |
3734 | case OFPACT_SET_IP_DSCP: |
3735 | if (is_ip_any(flow)) { | |
f47ea021 | 3736 | wc->masks.nw_tos |= IP_DSCP_MASK; |
33bf9176 | 3737 | flow->nw_tos &= ~IP_DSCP_MASK; |
04f01c24 | 3738 | flow->nw_tos |= ofpact_get_SET_IP_DSCP(a)->dscp; |
9583bc14 EJ |
3739 | } |
3740 | break; | |
3741 | ||
ff14eb7a JR |
3742 | case OFPACT_SET_IP_ECN: |
3743 | if (is_ip_any(flow)) { | |
3744 | wc->masks.nw_tos |= IP_ECN_MASK; | |
3745 | flow->nw_tos &= ~IP_ECN_MASK; | |
3746 | flow->nw_tos |= ofpact_get_SET_IP_ECN(a)->ecn; | |
3747 | } | |
3748 | break; | |
3749 | ||
0c20dbe4 JR |
3750 | case OFPACT_SET_IP_TTL: |
3751 | if (is_ip_any(flow)) { | |
3752 | wc->masks.nw_ttl = 0xff; | |
3753 | flow->nw_ttl = ofpact_get_SET_IP_TTL(a)->ttl; | |
3754 | } | |
3755 | break; | |
3756 | ||
9583bc14 | 3757 | case OFPACT_SET_L4_SRC_PORT: |
33bf9176 | 3758 | if (is_ip_any(flow)) { |
f47ea021 JR |
3759 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); |
3760 | memset(&wc->masks.tp_src, 0xff, sizeof wc->masks.tp_src); | |
33bf9176 | 3761 | flow->tp_src = htons(ofpact_get_SET_L4_SRC_PORT(a)->port); |
9583bc14 EJ |
3762 | } |
3763 | break; | |
3764 | ||
3765 | case OFPACT_SET_L4_DST_PORT: | |
33bf9176 | 3766 | if (is_ip_any(flow)) { |
f47ea021 JR |
3767 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); |
3768 | memset(&wc->masks.tp_dst, 0xff, sizeof wc->masks.tp_dst); | |
33bf9176 | 3769 | flow->tp_dst = htons(ofpact_get_SET_L4_DST_PORT(a)->port); |
9583bc14 EJ |
3770 | } |
3771 | break; | |
3772 | ||
3773 | case OFPACT_RESUBMIT: | |
3774 | xlate_ofpact_resubmit(ctx, ofpact_get_RESUBMIT(a)); | |
3775 | break; | |
3776 | ||
3777 | case OFPACT_SET_TUNNEL: | |
33bf9176 | 3778 | flow->tunnel.tun_id = htonll(ofpact_get_SET_TUNNEL(a)->tun_id); |
9583bc14 EJ |
3779 | break; |
3780 | ||
3781 | case OFPACT_SET_QUEUE: | |
16194afd DDP |
3782 | memset(&wc->masks.skb_priority, 0xff, |
3783 | sizeof wc->masks.skb_priority); | |
9583bc14 EJ |
3784 | xlate_set_queue_action(ctx, ofpact_get_SET_QUEUE(a)->queue_id); |
3785 | break; | |
3786 | ||
3787 | case OFPACT_POP_QUEUE: | |
16194afd DDP |
3788 | memset(&wc->masks.skb_priority, 0xff, |
3789 | sizeof wc->masks.skb_priority); | |
33bf9176 | 3790 | flow->skb_priority = ctx->orig_skb_priority; |
9583bc14 EJ |
3791 | break; |
3792 | ||
3793 | case OFPACT_REG_MOVE: | |
33bf9176 | 3794 | nxm_execute_reg_move(ofpact_get_REG_MOVE(a), flow, wc); |
9583bc14 EJ |
3795 | break; |
3796 | ||
b2dd70be JR |
3797 | case OFPACT_SET_FIELD: |
3798 | set_field = ofpact_get_SET_FIELD(a); | |
3799 | mf = set_field->field; | |
b2dd70be JR |
3800 | |
3801 | /* Set field action only ever overwrites packet's outermost | |
3802 | * applicable header fields. Do nothing if no header exists. */ | |
4479846e JR |
3803 | if (mf->id == MFF_VLAN_VID) { |
3804 | wc->masks.vlan_tci |= htons(VLAN_CFI); | |
3805 | if (!(flow->vlan_tci & htons(VLAN_CFI))) { | |
3806 | break; | |
3807 | } | |
3808 | } else if ((mf->id == MFF_MPLS_LABEL || mf->id == MFF_MPLS_TC) | |
3809 | /* 'dl_type' is already unwildcarded. */ | |
3810 | && !eth_type_mpls(flow->dl_type)) { | |
3811 | break; | |
b2dd70be | 3812 | } |
4479846e JR |
3813 | |
3814 | mf_mask_field_and_prereqs(mf, &wc->masks); | |
7eb4b1f1 BP |
3815 | mf_set_flow_value_masked(mf, &set_field->value, &set_field->mask, |
3816 | flow); | |
b2dd70be JR |
3817 | break; |
3818 | ||
9583bc14 | 3819 | case OFPACT_STACK_PUSH: |
33bf9176 BP |
3820 | nxm_execute_stack_push(ofpact_get_STACK_PUSH(a), flow, wc, |
3821 | &ctx->stack); | |
9583bc14 EJ |
3822 | break; |
3823 | ||
3824 | case OFPACT_STACK_POP: | |
f74e7df7 JP |
3825 | nxm_execute_stack_pop(ofpact_get_STACK_POP(a), flow, wc, |
3826 | &ctx->stack); | |
9583bc14 EJ |
3827 | break; |
3828 | ||
3829 | case OFPACT_PUSH_MPLS: | |
8bfd0fda | 3830 | compose_mpls_push_action(ctx, ofpact_get_PUSH_MPLS(a)); |
9583bc14 EJ |
3831 | break; |
3832 | ||
3833 | case OFPACT_POP_MPLS: | |
8bfd0fda | 3834 | compose_mpls_pop_action(ctx, ofpact_get_POP_MPLS(a)->ethertype); |
9583bc14 EJ |
3835 | break; |
3836 | ||
097d4939 | 3837 | case OFPACT_SET_MPLS_LABEL: |
8bfd0fda BP |
3838 | compose_set_mpls_label_action( |
3839 | ctx, ofpact_get_SET_MPLS_LABEL(a)->label); | |
3840 | break; | |
097d4939 JR |
3841 | |
3842 | case OFPACT_SET_MPLS_TC: | |
8bfd0fda | 3843 | compose_set_mpls_tc_action(ctx, ofpact_get_SET_MPLS_TC(a)->tc); |
097d4939 JR |
3844 | break; |
3845 | ||
9583bc14 | 3846 | case OFPACT_SET_MPLS_TTL: |
8bfd0fda | 3847 | compose_set_mpls_ttl_action(ctx, ofpact_get_SET_MPLS_TTL(a)->ttl); |
9583bc14 EJ |
3848 | break; |
3849 | ||
3850 | case OFPACT_DEC_MPLS_TTL: | |
9cfef3d0 | 3851 | if (compose_dec_mpls_ttl_action(ctx)) { |
ad3efdcb | 3852 | return; |
9583bc14 EJ |
3853 | } |
3854 | break; | |
3855 | ||
3856 | case OFPACT_DEC_TTL: | |
f74e7df7 | 3857 | wc->masks.nw_ttl = 0xff; |
9583bc14 | 3858 | if (compose_dec_ttl(ctx, ofpact_get_DEC_TTL(a))) { |
ad3efdcb | 3859 | return; |
9583bc14 EJ |
3860 | } |
3861 | break; | |
3862 | ||
3863 | case OFPACT_NOTE: | |
3864 | /* Nothing to do. */ | |
3865 | break; | |
3866 | ||
3867 | case OFPACT_MULTIPATH: | |
33bf9176 | 3868 | multipath_execute(ofpact_get_MULTIPATH(a), flow, wc); |
9583bc14 EJ |
3869 | break; |
3870 | ||
3871 | case OFPACT_BUNDLE: | |
9583bc14 EJ |
3872 | xlate_bundle_action(ctx, ofpact_get_BUNDLE(a)); |
3873 | break; | |
3874 | ||
3875 | case OFPACT_OUTPUT_REG: | |
3876 | xlate_output_reg_action(ctx, ofpact_get_OUTPUT_REG(a)); | |
3877 | break; | |
3878 | ||
3879 | case OFPACT_LEARN: | |
3880 | xlate_learn_action(ctx, ofpact_get_LEARN(a)); | |
3881 | break; | |
3882 | ||
3883 | case OFPACT_EXIT: | |
3884 | ctx->exit = true; | |
3885 | break; | |
3886 | ||
3887 | case OFPACT_FIN_TIMEOUT: | |
33bf9176 | 3888 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); |
9583bc14 EJ |
3889 | ctx->xout->has_fin_timeout = true; |
3890 | xlate_fin_timeout(ctx, ofpact_get_FIN_TIMEOUT(a)); | |
3891 | break; | |
3892 | ||
3893 | case OFPACT_CLEAR_ACTIONS: | |
7fdb60a7 SH |
3894 | ofpbuf_clear(&ctx->action_set); |
3895 | break; | |
3896 | ||
3897 | case OFPACT_WRITE_ACTIONS: | |
3898 | xlate_write_actions(ctx, a); | |
9583bc14 EJ |
3899 | break; |
3900 | ||
3901 | case OFPACT_WRITE_METADATA: | |
3902 | metadata = ofpact_get_WRITE_METADATA(a); | |
33bf9176 BP |
3903 | flow->metadata &= ~metadata->mask; |
3904 | flow->metadata |= metadata->metadata & metadata->mask; | |
9583bc14 EJ |
3905 | break; |
3906 | ||
638a19b0 JR |
3907 | case OFPACT_METER: |
3908 | /* Not implemented yet. */ | |
3909 | break; | |
3910 | ||
9583bc14 | 3911 | case OFPACT_GOTO_TABLE: { |
9583bc14 | 3912 | struct ofpact_goto_table *ogt = ofpact_get_GOTO_TABLE(a); |
9583bc14 | 3913 | |
7bbdd84f SH |
3914 | /* Allow ctx->table_id == TBL_INTERNAL, which will be greater |
3915 | * than ogt->table_id. This is to allow goto_table actions that | |
3916 | * triggered recirculation: ctx->table_id will be TBL_INTERNAL | |
3917 | * after recirculation. */ | |
3918 | ovs_assert(ctx->table_id == TBL_INTERNAL | |
3919 | || ctx->table_id < ogt->table_id); | |
4468099e | 3920 | xlate_table_action(ctx, ctx->xin->flow.in_port.ofp_port, |
6d328fa2 | 3921 | ogt->table_id, true, true); |
9583bc14 EJ |
3922 | break; |
3923 | } | |
3924 | ||
3925 | case OFPACT_SAMPLE: | |
3926 | xlate_sample_action(ctx, ofpact_get_SAMPLE(a)); | |
3927 | break; | |
3928 | } | |
3929 | } | |
9583bc14 EJ |
3930 | } |
3931 | ||
3932 | void | |
3933 | xlate_in_init(struct xlate_in *xin, struct ofproto_dpif *ofproto, | |
cc377352 EJ |
3934 | const struct flow *flow, ofp_port_t in_port, |
3935 | struct rule_dpif *rule, uint16_t tcp_flags, | |
3936 | const struct ofpbuf *packet) | |
9583bc14 EJ |
3937 | { |
3938 | xin->ofproto = ofproto; | |
3939 | xin->flow = *flow; | |
cc377352 | 3940 | xin->flow.in_port.ofp_port = in_port; |
9583bc14 EJ |
3941 | xin->packet = packet; |
3942 | xin->may_learn = packet != NULL; | |
3943 | xin->rule = rule; | |
b256dc52 | 3944 | xin->xcache = NULL; |
9583bc14 EJ |
3945 | xin->ofpacts = NULL; |
3946 | xin->ofpacts_len = 0; | |
3947 | xin->tcp_flags = tcp_flags; | |
3948 | xin->resubmit_hook = NULL; | |
3949 | xin->report_hook = NULL; | |
3950 | xin->resubmit_stats = NULL; | |
3f207910 | 3951 | xin->skip_wildcards = false; |
cc377352 | 3952 | xin->odp_actions = NULL; |
9583bc14 EJ |
3953 | } |
3954 | ||
3955 | void | |
3956 | xlate_out_uninit(struct xlate_out *xout) | |
3957 | { | |
cc377352 EJ |
3958 | if (xout && xout->odp_actions == &xout->odp_actions_buf) { |
3959 | ofpbuf_uninit(xout->odp_actions); | |
9583bc14 EJ |
3960 | } |
3961 | } | |
3962 | ||
3963 | /* Translates the 'ofpacts_len' bytes of "struct ofpact"s starting at 'ofpacts' | |
3964 | * into datapath actions, using 'ctx', and discards the datapath actions. */ | |
3965 | void | |
3966 | xlate_actions_for_side_effects(struct xlate_in *xin) | |
3967 | { | |
3968 | struct xlate_out xout; | |
3969 | ||
3970 | xlate_actions(xin, &xout); | |
3971 | xlate_out_uninit(&xout); | |
3972 | } | |
3973 | ||
3974 | static void | |
3975 | xlate_report(struct xlate_ctx *ctx, const char *s) | |
3976 | { | |
3977 | if (ctx->xin->report_hook) { | |
4d0acc70 | 3978 | ctx->xin->report_hook(ctx->xin, s, ctx->recurse); |
9583bc14 EJ |
3979 | } |
3980 | } | |
3981 | ||
3982 | void | |
3983 | xlate_out_copy(struct xlate_out *dst, const struct xlate_out *src) | |
3984 | { | |
3985 | dst->wc = src->wc; | |
9583bc14 EJ |
3986 | dst->slow = src->slow; |
3987 | dst->has_learn = src->has_learn; | |
3988 | dst->has_normal = src->has_normal; | |
3989 | dst->has_fin_timeout = src->has_fin_timeout; | |
3990 | dst->nf_output_iface = src->nf_output_iface; | |
3991 | dst->mirrors = src->mirrors; | |
3992 | ||
cc377352 EJ |
3993 | dst->odp_actions = &dst->odp_actions_buf; |
3994 | ofpbuf_use_stub(dst->odp_actions, dst->odp_actions_stub, | |
9583bc14 | 3995 | sizeof dst->odp_actions_stub); |
cc377352 EJ |
3996 | ofpbuf_put(dst->odp_actions, ofpbuf_data(src->odp_actions), |
3997 | ofpbuf_size(src->odp_actions)); | |
9583bc14 EJ |
3998 | } |
3999 | \f | |
55954f6e EJ |
4000 | static struct skb_priority_to_dscp * |
4001 | get_skb_priority(const struct xport *xport, uint32_t skb_priority) | |
4002 | { | |
4003 | struct skb_priority_to_dscp *pdscp; | |
4004 | uint32_t hash; | |
4005 | ||
4006 | hash = hash_int(skb_priority, 0); | |
4007 | HMAP_FOR_EACH_IN_BUCKET (pdscp, hmap_node, hash, &xport->skb_priorities) { | |
4008 | if (pdscp->skb_priority == skb_priority) { | |
4009 | return pdscp; | |
4010 | } | |
4011 | } | |
4012 | return NULL; | |
4013 | } | |
4014 | ||
4015 | static bool | |
4016 | dscp_from_skb_priority(const struct xport *xport, uint32_t skb_priority, | |
4017 | uint8_t *dscp) | |
4018 | { | |
4019 | struct skb_priority_to_dscp *pdscp = get_skb_priority(xport, skb_priority); | |
4020 | *dscp = pdscp ? pdscp->dscp : 0; | |
4021 | return pdscp != NULL; | |
4022 | } | |
4023 | ||
16194afd DDP |
4024 | static size_t |
4025 | count_skb_priorities(const struct xport *xport) | |
4026 | { | |
4027 | return hmap_count(&xport->skb_priorities); | |
4028 | } | |
4029 | ||
55954f6e EJ |
4030 | static void |
4031 | clear_skb_priorities(struct xport *xport) | |
4032 | { | |
4033 | struct skb_priority_to_dscp *pdscp, *next; | |
4034 | ||
4035 | HMAP_FOR_EACH_SAFE (pdscp, next, hmap_node, &xport->skb_priorities) { | |
4036 | hmap_remove(&xport->skb_priorities, &pdscp->hmap_node); | |
4037 | free(pdscp); | |
4038 | } | |
4039 | } | |
4040 | ||
ce4a6b76 BP |
4041 | static bool |
4042 | actions_output_to_local_port(const struct xlate_ctx *ctx) | |
4043 | { | |
46c88433 | 4044 | odp_port_t local_odp_port = ofp_port_to_odp_port(ctx->xbridge, OFPP_LOCAL); |
ce4a6b76 BP |
4045 | const struct nlattr *a; |
4046 | unsigned int left; | |
4047 | ||
cc377352 EJ |
4048 | NL_ATTR_FOR_EACH_UNSAFE (a, left, ofpbuf_data(ctx->xout->odp_actions), |
4049 | ofpbuf_size(ctx->xout->odp_actions)) { | |
ce4a6b76 BP |
4050 | if (nl_attr_type(a) == OVS_ACTION_ATTR_OUTPUT |
4051 | && nl_attr_get_odp_port(a) == local_odp_port) { | |
4052 | return true; | |
4053 | } | |
4054 | } | |
4055 | return false; | |
4056 | } | |
9583bc14 | 4057 | |
5e2a6702 | 4058 | #if defined(__linux__) |
7d031d7e BP |
4059 | /* Returns the maximum number of packets that the Linux kernel is willing to |
4060 | * queue up internally to certain kinds of software-implemented ports, or the | |
4061 | * default (and rarely modified) value if it cannot be determined. */ | |
4062 | static int | |
4063 | netdev_max_backlog(void) | |
4064 | { | |
4065 | static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER; | |
4066 | static int max_backlog = 1000; /* The normal default value. */ | |
4067 | ||
4068 | if (ovsthread_once_start(&once)) { | |
4069 | static const char filename[] = "/proc/sys/net/core/netdev_max_backlog"; | |
4070 | FILE *stream; | |
4071 | int n; | |
4072 | ||
4073 | stream = fopen(filename, "r"); | |
4074 | if (!stream) { | |
4075 | VLOG_WARN("%s: open failed (%s)", filename, ovs_strerror(errno)); | |
4076 | } else { | |
4077 | if (fscanf(stream, "%d", &n) != 1) { | |
4078 | VLOG_WARN("%s: read error", filename); | |
4079 | } else if (n <= 100) { | |
4080 | VLOG_WARN("%s: unexpectedly small value %d", filename, n); | |
4081 | } else { | |
4082 | max_backlog = n; | |
4083 | } | |
4084 | fclose(stream); | |
4085 | } | |
4086 | ovsthread_once_done(&once); | |
4087 | ||
4088 | VLOG_DBG("%s: using %d max_backlog", filename, max_backlog); | |
4089 | } | |
4090 | ||
4091 | return max_backlog; | |
4092 | } | |
4093 | ||
4094 | /* Counts and returns the number of OVS_ACTION_ATTR_OUTPUT actions in | |
4095 | * 'odp_actions'. */ | |
4096 | static int | |
4097 | count_output_actions(const struct ofpbuf *odp_actions) | |
4098 | { | |
4099 | const struct nlattr *a; | |
4100 | size_t left; | |
4101 | int n = 0; | |
4102 | ||
4103 | NL_ATTR_FOR_EACH_UNSAFE (a, left, ofpbuf_data(odp_actions), | |
4104 | ofpbuf_size(odp_actions)) { | |
4105 | if (a->nla_type == OVS_ACTION_ATTR_OUTPUT) { | |
4106 | n++; | |
4107 | } | |
4108 | } | |
4109 | return n; | |
4110 | } | |
5e2a6702 | 4111 | #endif /* defined(__linux__) */ |
7d031d7e BP |
4112 | |
4113 | /* Returns true if 'odp_actions' contains more output actions than the datapath | |
4114 | * can reliably handle in one go. On Linux, this is the value of the | |
4115 | * net.core.netdev_max_backlog sysctl, which limits the maximum number of | |
4116 | * packets that the kernel is willing to queue up for processing while the | |
4117 | * datapath is processing a set of actions. */ | |
4118 | static bool | |
5e2a6702 | 4119 | too_many_output_actions(const struct ofpbuf *odp_actions OVS_UNUSED) |
7d031d7e BP |
4120 | { |
4121 | #ifdef __linux__ | |
4122 | return (ofpbuf_size(odp_actions) / NL_A_U32_SIZE > netdev_max_backlog() | |
4123 | && count_output_actions(odp_actions) > netdev_max_backlog()); | |
4124 | #else | |
4125 | /* OSes other than Linux might have similar limits, but we don't know how | |
4126 | * to determine them.*/ | |
4127 | return false; | |
4128 | #endif | |
4129 | } | |
4130 | ||
9583bc14 | 4131 | /* Translates the 'ofpacts_len' bytes of "struct ofpacts" starting at 'ofpacts' |
56450a41 BP |
4132 | * into datapath actions in 'odp_actions', using 'ctx'. |
4133 | * | |
4134 | * The caller must take responsibility for eventually freeing 'xout', with | |
4135 | * xlate_out_uninit(). */ | |
84f0f298 RW |
4136 | void |
4137 | xlate_actions(struct xlate_in *xin, struct xlate_out *xout) | |
9583bc14 | 4138 | { |
84f0f298 | 4139 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
33bf9176 BP |
4140 | struct flow_wildcards *wc = &xout->wc; |
4141 | struct flow *flow = &xin->flow; | |
10c44245 | 4142 | struct rule_dpif *rule = NULL; |
33bf9176 | 4143 | |
dc723c44 | 4144 | const struct rule_actions *actions = NULL; |
9583bc14 EJ |
4145 | enum slow_path_reason special; |
4146 | const struct ofpact *ofpacts; | |
46c88433 | 4147 | struct xport *in_port; |
9583bc14 EJ |
4148 | struct flow orig_flow; |
4149 | struct xlate_ctx ctx; | |
4150 | size_t ofpacts_len; | |
62a7cc71 | 4151 | bool tnl_may_send; |
c56fac1b | 4152 | bool is_icmp; |
9583bc14 | 4153 | |
46c88433 | 4154 | COVERAGE_INC(xlate_actions); |
9583bc14 EJ |
4155 | |
4156 | /* Flow initialization rules: | |
4157 | * - 'base_flow' must match the kernel's view of the packet at the | |
4158 | * time that action processing starts. 'flow' represents any | |
4159 | * transformations we wish to make through actions. | |
4160 | * - By default 'base_flow' and 'flow' are the same since the input | |
4161 | * packet matches the output before any actions are applied. | |
4162 | * - When using VLAN splinters, 'base_flow''s VLAN is set to the value | |
4163 | * of the received packet as seen by the kernel. If we later output | |
4164 | * to another device without any modifications this will cause us to | |
4165 | * insert a new tag since the original one was stripped off by the | |
4166 | * VLAN device. | |
4167 | * - Tunnel metadata as received is retained in 'flow'. This allows | |
4168 | * tunnel metadata matching also in later tables. | |
4169 | * Since a kernel action for setting the tunnel metadata will only be | |
4170 | * generated with actual tunnel output, changing the tunnel metadata | |
4171 | * values in 'flow' (such as tun_id) will only have effect with a later | |
4172 | * tunnel output action. | |
4173 | * - Tunnel 'base_flow' is completely cleared since that is what the | |
4174 | * kernel does. If we wish to maintain the original values an action | |
4175 | * needs to be generated. */ | |
4176 | ||
4177 | ctx.xin = xin; | |
4178 | ctx.xout = xout; | |
46c88433 EJ |
4179 | ctx.xout->slow = 0; |
4180 | ctx.xout->has_learn = false; | |
4181 | ctx.xout->has_normal = false; | |
4182 | ctx.xout->has_fin_timeout = false; | |
4183 | ctx.xout->nf_output_iface = NF_OUT_DROP; | |
4184 | ctx.xout->mirrors = 0; | |
cc377352 EJ |
4185 | |
4186 | xout->odp_actions = xin->odp_actions; | |
4187 | if (!xout->odp_actions) { | |
4188 | xout->odp_actions = &xout->odp_actions_buf; | |
4189 | ofpbuf_use_stub(xout->odp_actions, xout->odp_actions_stub, | |
4190 | sizeof xout->odp_actions_stub); | |
4191 | } | |
4192 | ofpbuf_reserve(xout->odp_actions, NL_A_U32_SIZE); | |
46c88433 | 4193 | |
84f0f298 | 4194 | ctx.xbridge = xbridge_lookup(xcfg, xin->ofproto); |
46c88433 | 4195 | if (!ctx.xbridge) { |
83709dfa | 4196 | return; |
46c88433 | 4197 | } |
9583bc14 | 4198 | |
9583bc14 EJ |
4199 | ctx.rule = xin->rule; |
4200 | ||
33bf9176 | 4201 | ctx.base_flow = *flow; |
9583bc14 | 4202 | memset(&ctx.base_flow.tunnel, 0, sizeof ctx.base_flow.tunnel); |
33bf9176 | 4203 | ctx.orig_tunnel_ip_dst = flow->tunnel.ip_dst; |
9583bc14 | 4204 | |
33bf9176 BP |
4205 | flow_wildcards_init_catchall(wc); |
4206 | memset(&wc->masks.in_port, 0xff, sizeof wc->masks.in_port); | |
7431e171 | 4207 | memset(&wc->masks.dl_type, 0xff, sizeof wc->masks.dl_type); |
0934ebba BP |
4208 | if (is_ip_any(flow)) { |
4209 | wc->masks.nw_frag |= FLOW_NW_FRAG_MASK; | |
4210 | } | |
c56fac1b | 4211 | is_icmp = is_icmpv4(flow) || is_icmpv6(flow); |
9583bc14 | 4212 | |
62a7cc71 | 4213 | tnl_may_send = tnl_xlate_init(&ctx.base_flow, flow, wc); |
ce3955be | 4214 | if (ctx.xbridge->netflow) { |
9b658910 | 4215 | netflow_mask_wc(flow, wc); |
9583bc14 EJ |
4216 | } |
4217 | ||
9583bc14 | 4218 | ctx.recurse = 0; |
98b07853 | 4219 | ctx.resubmits = 0; |
5a070238 | 4220 | ctx.in_group = false; |
33bf9176 | 4221 | ctx.orig_skb_priority = flow->skb_priority; |
9583bc14 EJ |
4222 | ctx.table_id = 0; |
4223 | ctx.exit = false; | |
92c08f09 | 4224 | ctx.use_recirc = false; |
7bbdd84f | 4225 | ctx.was_mpls = false; |
9583bc14 | 4226 | |
10c44245 | 4227 | if (!xin->ofpacts && !ctx.rule) { |
6d328fa2 SH |
4228 | ctx.table_id = rule_dpif_lookup(ctx.xbridge->ofproto, flow, |
4229 | !xin->skip_wildcards ? wc : NULL, | |
d611866c SH |
4230 | &rule, ctx.xin->xcache != NULL, |
4231 | ctx.xin->resubmit_stats); | |
10c44245 EJ |
4232 | if (ctx.xin->resubmit_stats) { |
4233 | rule_dpif_credit_stats(rule, ctx.xin->resubmit_stats); | |
4234 | } | |
b256dc52 JS |
4235 | if (ctx.xin->xcache) { |
4236 | struct xc_entry *entry; | |
4237 | ||
4238 | entry = xlate_cache_add_entry(ctx.xin->xcache, XC_RULE); | |
b256dc52 JS |
4239 | entry->u.rule = rule; |
4240 | } | |
10c44245 EJ |
4241 | ctx.rule = rule; |
4242 | } | |
ee1afdd5 | 4243 | xout->fail_open = ctx.rule && rule_dpif_is_fail_open(ctx.rule); |
10c44245 | 4244 | |
9583bc14 EJ |
4245 | if (xin->ofpacts) { |
4246 | ofpacts = xin->ofpacts; | |
4247 | ofpacts_len = xin->ofpacts_len; | |
10c44245 EJ |
4248 | } else if (ctx.rule) { |
4249 | actions = rule_dpif_get_actions(ctx.rule); | |
6f00e29b BP |
4250 | ofpacts = actions->ofpacts; |
4251 | ofpacts_len = actions->ofpacts_len; | |
9583bc14 | 4252 | } else { |
428b2edd | 4253 | OVS_NOT_REACHED(); |
9583bc14 EJ |
4254 | } |
4255 | ||
4256 | ofpbuf_use_stub(&ctx.stack, ctx.init_stack, sizeof ctx.init_stack); | |
7fdb60a7 SH |
4257 | ofpbuf_use_stub(&ctx.action_set, |
4258 | ctx.action_set_stub, sizeof ctx.action_set_stub); | |
9583bc14 | 4259 | |
ade6ad9c | 4260 | if (mbridge_has_mirrors(ctx.xbridge->mbridge)) { |
9583bc14 EJ |
4261 | /* Do this conditionally because the copy is expensive enough that it |
4262 | * shows up in profiles. */ | |
33bf9176 | 4263 | orig_flow = *flow; |
9583bc14 EJ |
4264 | } |
4265 | ||
33bf9176 | 4266 | if (flow->nw_frag & FLOW_NW_FRAG_ANY) { |
46c88433 | 4267 | switch (ctx.xbridge->frag) { |
9583bc14 EJ |
4268 | case OFPC_FRAG_NORMAL: |
4269 | /* We must pretend that transport ports are unavailable. */ | |
33bf9176 BP |
4270 | flow->tp_src = ctx.base_flow.tp_src = htons(0); |
4271 | flow->tp_dst = ctx.base_flow.tp_dst = htons(0); | |
9583bc14 EJ |
4272 | break; |
4273 | ||
4274 | case OFPC_FRAG_DROP: | |
83709dfa | 4275 | return; |
9583bc14 EJ |
4276 | |
4277 | case OFPC_FRAG_REASM: | |
428b2edd | 4278 | OVS_NOT_REACHED(); |
9583bc14 EJ |
4279 | |
4280 | case OFPC_FRAG_NX_MATCH: | |
4281 | /* Nothing to do. */ | |
4282 | break; | |
4283 | ||
4284 | case OFPC_INVALID_TTL_TO_CONTROLLER: | |
428b2edd | 4285 | OVS_NOT_REACHED(); |
9583bc14 EJ |
4286 | } |
4287 | } | |
4288 | ||
46c88433 | 4289 | in_port = get_ofp_port(ctx.xbridge, flow->in_port.ofp_port); |
b256dc52 JS |
4290 | if (in_port && in_port->is_tunnel) { |
4291 | if (ctx.xin->resubmit_stats) { | |
4292 | netdev_vport_inc_rx(in_port->netdev, ctx.xin->resubmit_stats); | |
4293 | if (in_port->bfd) { | |
4294 | bfd_account_rx(in_port->bfd, ctx.xin->resubmit_stats); | |
4295 | } | |
4296 | } | |
4297 | if (ctx.xin->xcache) { | |
4298 | struct xc_entry *entry; | |
4299 | ||
4300 | entry = xlate_cache_add_entry(ctx.xin->xcache, XC_NETDEV); | |
4301 | entry->u.dev.rx = netdev_ref(in_port->netdev); | |
4302 | entry->u.dev.bfd = bfd_ref(in_port->bfd); | |
d6fc5f57 EJ |
4303 | } |
4304 | } | |
4305 | ||
642dc74d | 4306 | special = process_special(&ctx, flow, in_port, ctx.xin->packet); |
9583bc14 | 4307 | if (special) { |
04594cd5 | 4308 | ctx.xout->slow |= special; |
9583bc14 | 4309 | } else { |
9583bc14 | 4310 | size_t sample_actions_len; |
9583bc14 | 4311 | |
4e022ec0 | 4312 | if (flow->in_port.ofp_port |
46c88433 EJ |
4313 | != vsp_realdev_to_vlandev(ctx.xbridge->ofproto, |
4314 | flow->in_port.ofp_port, | |
33bf9176 | 4315 | flow->vlan_tci)) { |
9583bc14 EJ |
4316 | ctx.base_flow.vlan_tci = 0; |
4317 | } | |
4318 | ||
4319 | add_sflow_action(&ctx); | |
4320 | add_ipfix_action(&ctx); | |
cc377352 | 4321 | sample_actions_len = ofpbuf_size(ctx.xout->odp_actions); |
9583bc14 | 4322 | |
62a7cc71 | 4323 | if (tnl_may_send && (!in_port || may_receive(in_port, &ctx))) { |
9583bc14 EJ |
4324 | do_xlate_actions(ofpacts, ofpacts_len, &ctx); |
4325 | ||
4326 | /* We've let OFPP_NORMAL and the learning action look at the | |
4327 | * packet, so drop it now if forwarding is disabled. */ | |
9efd308e DV |
4328 | if (in_port && (!xport_stp_forward_state(in_port) || |
4329 | !xport_rstp_forward_state(in_port))) { | |
cc377352 | 4330 | ofpbuf_set_size(ctx.xout->odp_actions, sample_actions_len); |
9583bc14 EJ |
4331 | } |
4332 | } | |
4333 | ||
1f317cb5 | 4334 | if (ofpbuf_size(&ctx.action_set)) { |
7fdb60a7 SH |
4335 | xlate_action_set(&ctx); |
4336 | } | |
4337 | ||
46c88433 | 4338 | if (ctx.xbridge->has_in_band |
ce4a6b76 BP |
4339 | && in_band_must_output_to_local_port(flow) |
4340 | && !actions_output_to_local_port(&ctx)) { | |
9583bc14 EJ |
4341 | compose_output_action(&ctx, OFPP_LOCAL); |
4342 | } | |
aaa0fbae EJ |
4343 | |
4344 | fix_sflow_action(&ctx); | |
4345 | ||
46c88433 | 4346 | if (mbridge_has_mirrors(ctx.xbridge->mbridge)) { |
9583bc14 EJ |
4347 | add_mirror_actions(&ctx, &orig_flow); |
4348 | } | |
9583bc14 EJ |
4349 | } |
4350 | ||
cc377352 | 4351 | if (nl_attr_oversized(ofpbuf_size(ctx.xout->odp_actions))) { |
542024c4 | 4352 | /* These datapath actions are too big for a Netlink attribute, so we |
0f032e95 BP |
4353 | * can't hand them to the kernel directly. dpif_execute() can execute |
4354 | * them one by one with help, so just mark the result as SLOW_ACTION to | |
4355 | * prevent the flow from being installed. */ | |
4356 | COVERAGE_INC(xlate_actions_oversize); | |
4357 | ctx.xout->slow |= SLOW_ACTION; | |
7d031d7e BP |
4358 | } else if (too_many_output_actions(ctx.xout->odp_actions)) { |
4359 | COVERAGE_INC(xlate_actions_too_many_output); | |
4360 | ctx.xout->slow |= SLOW_ACTION; | |
542024c4 BP |
4361 | } |
4362 | ||
b256dc52 JS |
4363 | if (mbridge_has_mirrors(ctx.xbridge->mbridge)) { |
4364 | if (ctx.xin->resubmit_stats) { | |
4365 | mirror_update_stats(ctx.xbridge->mbridge, xout->mirrors, | |
4366 | ctx.xin->resubmit_stats->n_packets, | |
4367 | ctx.xin->resubmit_stats->n_bytes); | |
4368 | } | |
4369 | if (ctx.xin->xcache) { | |
4370 | struct xc_entry *entry; | |
4371 | ||
4372 | entry = xlate_cache_add_entry(ctx.xin->xcache, XC_MIRROR); | |
4373 | entry->u.mirror.mbridge = mbridge_ref(ctx.xbridge->mbridge); | |
4374 | entry->u.mirror.mirrors = xout->mirrors; | |
4375 | } | |
4376 | } | |
4377 | ||
4378 | if (ctx.xbridge->netflow) { | |
b256dc52 JS |
4379 | /* Only update netflow if we don't have controller flow. We don't |
4380 | * report NetFlow expiration messages for such facets because they | |
4381 | * are just part of the control logic for the network, not real | |
4382 | * traffic. */ | |
4383 | if (ofpacts_len == 0 | |
4384 | || ofpacts->type != OFPACT_CONTROLLER | |
4385 | || ofpact_next(ofpacts) < ofpact_end(ofpacts, ofpacts_len)) { | |
4386 | if (ctx.xin->resubmit_stats) { | |
d6fc5f57 EJ |
4387 | netflow_flow_update(ctx.xbridge->netflow, flow, |
4388 | xout->nf_output_iface, | |
4389 | ctx.xin->resubmit_stats); | |
4390 | } | |
b256dc52 JS |
4391 | if (ctx.xin->xcache) { |
4392 | struct xc_entry *entry; | |
4393 | ||
4394 | entry = xlate_cache_add_entry(ctx.xin->xcache, XC_NETFLOW); | |
4395 | entry->u.nf.netflow = netflow_ref(ctx.xbridge->netflow); | |
4396 | entry->u.nf.flow = xmemdup(flow, sizeof *flow); | |
4397 | entry->u.nf.iface = xout->nf_output_iface; | |
4398 | } | |
d6fc5f57 EJ |
4399 | } |
4400 | } | |
4401 | ||
9583bc14 | 4402 | ofpbuf_uninit(&ctx.stack); |
7fdb60a7 | 4403 | ofpbuf_uninit(&ctx.action_set); |
9583bc14 EJ |
4404 | |
4405 | /* Clear the metadata and register wildcard masks, because we won't | |
4406 | * use non-header fields as part of the cache. */ | |
c11c6faa | 4407 | flow_wildcards_clear_non_packet_fields(wc); |
dc24a00f | 4408 | |
c56fac1b BP |
4409 | /* ICMPv4 and ICMPv6 have 8-bit "type" and "code" fields. struct flow uses |
4410 | * the low 8 bits of the 16-bit tp_src and tp_dst members to represent | |
4411 | * these fields. The datapath interface, on the other hand, represents | |
4412 | * them with just 8 bits each. This means that if the high 8 bits of the | |
4413 | * masks for these fields somehow become set, then they will get chopped | |
4414 | * off by a round trip through the datapath, and revalidation will spot | |
4415 | * that as an inconsistency and delete the flow. Avoid the problem here by | |
4416 | * making sure that only the low 8 bits of either field can be unwildcarded | |
4417 | * for ICMP. | |
4418 | */ | |
4419 | if (is_icmp) { | |
4420 | wc->masks.tp_src &= htons(UINT8_MAX); | |
4421 | wc->masks.tp_dst &= htons(UINT8_MAX); | |
4422 | } | |
91d6cd12 AW |
4423 | } |
4424 | ||
4425 | /* Sends 'packet' out 'ofport'. | |
4426 | * May modify 'packet'. | |
4427 | * Returns 0 if successful, otherwise a positive errno value. */ | |
4428 | int | |
4429 | xlate_send_packet(const struct ofport_dpif *ofport, struct ofpbuf *packet) | |
4430 | { | |
84f0f298 | 4431 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
91d6cd12 | 4432 | struct xport *xport; |
91d6cd12 | 4433 | struct ofpact_output output; |
91d6cd12 | 4434 | struct flow flow; |
91d6cd12 | 4435 | |
91d6cd12 AW |
4436 | ofpact_init(&output.ofpact, OFPACT_OUTPUT, sizeof output); |
4437 | /* Use OFPP_NONE as the in_port to avoid special packet processing. */ | |
b5e7e61a AZ |
4438 | flow_extract(packet, NULL, &flow); |
4439 | flow.in_port.ofp_port = OFPP_NONE; | |
91d6cd12 | 4440 | |
84f0f298 | 4441 | xport = xport_lookup(xcfg, ofport); |
91d6cd12 | 4442 | if (!xport) { |
02ea2703 | 4443 | return EINVAL; |
91d6cd12 | 4444 | } |
91d6cd12 AW |
4445 | output.port = xport->ofp_port; |
4446 | output.max_len = 0; | |
e491a67a YT |
4447 | |
4448 | return ofproto_dpif_execute_actions(xport->xbridge->ofproto, &flow, NULL, | |
4449 | &output.ofpact, sizeof output, | |
4450 | packet); | |
9583bc14 | 4451 | } |
b256dc52 JS |
4452 | |
4453 | struct xlate_cache * | |
4454 | xlate_cache_new(void) | |
4455 | { | |
4456 | struct xlate_cache *xcache = xmalloc(sizeof *xcache); | |
4457 | ||
4458 | ofpbuf_init(&xcache->entries, 512); | |
4459 | return xcache; | |
4460 | } | |
4461 | ||
4462 | static struct xc_entry * | |
4463 | xlate_cache_add_entry(struct xlate_cache *xcache, enum xc_type type) | |
4464 | { | |
4465 | struct xc_entry *entry; | |
4466 | ||
4467 | entry = ofpbuf_put_zeros(&xcache->entries, sizeof *entry); | |
4468 | entry->type = type; | |
4469 | ||
4470 | return entry; | |
4471 | } | |
4472 | ||
4473 | static void | |
4474 | xlate_cache_netdev(struct xc_entry *entry, const struct dpif_flow_stats *stats) | |
4475 | { | |
4476 | if (entry->u.dev.tx) { | |
4477 | netdev_vport_inc_tx(entry->u.dev.tx, stats); | |
4478 | } | |
4479 | if (entry->u.dev.rx) { | |
4480 | netdev_vport_inc_rx(entry->u.dev.rx, stats); | |
4481 | } | |
4482 | if (entry->u.dev.bfd) { | |
4483 | bfd_account_rx(entry->u.dev.bfd, stats); | |
4484 | } | |
4485 | } | |
4486 | ||
4487 | static void | |
4488 | xlate_cache_normal(struct ofproto_dpif *ofproto, struct flow *flow, int vlan) | |
4489 | { | |
84f0f298 | 4490 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
b256dc52 JS |
4491 | struct xbridge *xbridge; |
4492 | struct xbundle *xbundle; | |
4493 | struct flow_wildcards wc; | |
4494 | ||
84f0f298 | 4495 | xbridge = xbridge_lookup(xcfg, ofproto); |
b256dc52 JS |
4496 | if (!xbridge) { |
4497 | return; | |
4498 | } | |
4499 | ||
4500 | xbundle = lookup_input_bundle(xbridge, flow->in_port.ofp_port, false, | |
4501 | NULL); | |
4502 | if (!xbundle) { | |
4503 | return; | |
4504 | } | |
4505 | ||
4506 | update_learning_table(xbridge, flow, &wc, vlan, xbundle); | |
4507 | } | |
4508 | ||
4509 | /* Push stats and perform side effects of flow translation. */ | |
4510 | void | |
0725e747 | 4511 | xlate_push_stats(struct xlate_cache *xcache, |
b256dc52 JS |
4512 | const struct dpif_flow_stats *stats) |
4513 | { | |
4514 | struct xc_entry *entry; | |
4515 | struct ofpbuf entries = xcache->entries; | |
4516 | ||
bc388583 BP |
4517 | if (!stats->n_packets) { |
4518 | return; | |
4519 | } | |
4520 | ||
b256dc52 JS |
4521 | XC_ENTRY_FOR_EACH (entry, entries, xcache) { |
4522 | switch (entry->type) { | |
4523 | case XC_RULE: | |
4524 | rule_dpif_credit_stats(entry->u.rule, stats); | |
4525 | break; | |
4526 | case XC_BOND: | |
4527 | bond_account(entry->u.bond.bond, entry->u.bond.flow, | |
4528 | entry->u.bond.vid, stats->n_bytes); | |
4529 | break; | |
4530 | case XC_NETDEV: | |
4531 | xlate_cache_netdev(entry, stats); | |
4532 | break; | |
4533 | case XC_NETFLOW: | |
4534 | netflow_flow_update(entry->u.nf.netflow, entry->u.nf.flow, | |
4535 | entry->u.nf.iface, stats); | |
4536 | break; | |
4537 | case XC_MIRROR: | |
4538 | mirror_update_stats(entry->u.mirror.mbridge, | |
4539 | entry->u.mirror.mirrors, | |
4540 | stats->n_packets, stats->n_bytes); | |
4541 | break; | |
4542 | case XC_LEARN: | |
0725e747 | 4543 | ofproto_dpif_flow_mod(entry->u.learn.ofproto, entry->u.learn.fm); |
b256dc52 JS |
4544 | break; |
4545 | case XC_NORMAL: | |
0725e747 BP |
4546 | xlate_cache_normal(entry->u.normal.ofproto, entry->u.normal.flow, |
4547 | entry->u.normal.vlan); | |
b256dc52 JS |
4548 | break; |
4549 | case XC_FIN_TIMEOUT: | |
4550 | xlate_fin_timeout__(entry->u.fin.rule, stats->tcp_flags, | |
4551 | entry->u.fin.idle, entry->u.fin.hard); | |
4552 | break; | |
1e684d7d RW |
4553 | case XC_GROUP: |
4554 | group_dpif_credit_stats(entry->u.group.group, entry->u.group.bucket, | |
4555 | stats); | |
4556 | break; | |
b256dc52 JS |
4557 | default: |
4558 | OVS_NOT_REACHED(); | |
4559 | } | |
4560 | } | |
4561 | } | |
4562 | ||
4563 | static void | |
4564 | xlate_dev_unref(struct xc_entry *entry) | |
4565 | { | |
4566 | if (entry->u.dev.tx) { | |
4567 | netdev_close(entry->u.dev.tx); | |
4568 | } | |
4569 | if (entry->u.dev.rx) { | |
4570 | netdev_close(entry->u.dev.rx); | |
4571 | } | |
4572 | if (entry->u.dev.bfd) { | |
4573 | bfd_unref(entry->u.dev.bfd); | |
4574 | } | |
4575 | } | |
4576 | ||
4577 | static void | |
4578 | xlate_cache_clear_netflow(struct netflow *netflow, struct flow *flow) | |
4579 | { | |
b256dc52 JS |
4580 | netflow_flow_clear(netflow, flow); |
4581 | netflow_unref(netflow); | |
4582 | free(flow); | |
4583 | } | |
4584 | ||
4585 | void | |
4586 | xlate_cache_clear(struct xlate_cache *xcache) | |
4587 | { | |
4588 | struct xc_entry *entry; | |
4589 | struct ofpbuf entries; | |
4590 | ||
4591 | if (!xcache) { | |
4592 | return; | |
4593 | } | |
4594 | ||
4595 | XC_ENTRY_FOR_EACH (entry, entries, xcache) { | |
4596 | switch (entry->type) { | |
4597 | case XC_RULE: | |
4598 | rule_dpif_unref(entry->u.rule); | |
4599 | break; | |
4600 | case XC_BOND: | |
4601 | free(entry->u.bond.flow); | |
4602 | bond_unref(entry->u.bond.bond); | |
4603 | break; | |
4604 | case XC_NETDEV: | |
4605 | xlate_dev_unref(entry); | |
4606 | break; | |
4607 | case XC_NETFLOW: | |
4608 | xlate_cache_clear_netflow(entry->u.nf.netflow, entry->u.nf.flow); | |
4609 | break; | |
4610 | case XC_MIRROR: | |
4611 | mbridge_unref(entry->u.mirror.mbridge); | |
4612 | break; | |
4613 | case XC_LEARN: | |
4165b5e0 JS |
4614 | free(entry->u.learn.fm); |
4615 | ofpbuf_delete(entry->u.learn.ofpacts); | |
b256dc52 JS |
4616 | break; |
4617 | case XC_NORMAL: | |
4618 | free(entry->u.normal.flow); | |
4619 | break; | |
4620 | case XC_FIN_TIMEOUT: | |
83709dfa JR |
4621 | /* 'u.fin.rule' is always already held as a XC_RULE, which |
4622 | * has already released it's reference above. */ | |
b256dc52 | 4623 | break; |
1e684d7d RW |
4624 | case XC_GROUP: |
4625 | group_dpif_unref(entry->u.group.group); | |
4626 | break; | |
b256dc52 JS |
4627 | default: |
4628 | OVS_NOT_REACHED(); | |
4629 | } | |
4630 | } | |
4631 | ||
4632 | ofpbuf_clear(&xcache->entries); | |
4633 | } | |
4634 | ||
4635 | void | |
4636 | xlate_cache_delete(struct xlate_cache *xcache) | |
4637 | { | |
4638 | xlate_cache_clear(xcache); | |
4639 | ofpbuf_uninit(&xcache->entries); | |
4640 | free(xcache); | |
4641 | } |