]>
Commit | Line | Data |
---|---|---|
064af421 | 1 | /* |
c475ae67 | 2 | * Copyright (c) 2009, 2010 Nicira Networks. |
064af421 | 3 | * |
a14bc59f BP |
4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
5 | * you may not use this file except in compliance with the License. | |
6 | * You may obtain a copy of the License at: | |
064af421 | 7 | * |
a14bc59f BP |
8 | * http://www.apache.org/licenses/LICENSE-2.0 |
9 | * | |
10 | * Unless required by applicable law or agreed to in writing, software | |
11 | * distributed under the License is distributed on an "AS IS" BASIS, | |
12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
13 | * See the License for the specific language governing permissions and | |
14 | * limitations under the License. | |
064af421 BP |
15 | */ |
16 | ||
17 | #include <config.h> | |
18 | #include "ofproto.h" | |
19 | #include <errno.h> | |
20 | #include <inttypes.h> | |
21 | #include <net/if.h> | |
22 | #include <netinet/in.h> | |
23 | #include <stdbool.h> | |
24 | #include <stdlib.h> | |
25 | #include "classifier.h" | |
26 | #include "coverage.h" | |
27 | #include "discovery.h" | |
28 | #include "dpif.h" | |
4f2cad2c | 29 | #include "dynamic-string.h" |
064af421 BP |
30 | #include "fail-open.h" |
31 | #include "in-band.h" | |
32 | #include "mac-learning.h" | |
33 | #include "netdev.h" | |
34 | #include "netflow.h" | |
35 | #include "odp-util.h" | |
36 | #include "ofp-print.h" | |
72b06300 | 37 | #include "ofproto-sflow.h" |
064af421 BP |
38 | #include "ofpbuf.h" |
39 | #include "openflow/nicira-ext.h" | |
40 | #include "openflow/openflow.h" | |
064af421 BP |
41 | #include "openvswitch/datapath-protocol.h" |
42 | #include "packets.h" | |
43 | #include "pinsched.h" | |
44 | #include "pktbuf.h" | |
45 | #include "poll-loop.h" | |
46 | #include "port-array.h" | |
47 | #include "rconn.h" | |
48 | #include "shash.h" | |
49 | #include "status.h" | |
50 | #include "stp.h" | |
fe55ad15 | 51 | #include "stream-ssl.h" |
064af421 BP |
52 | #include "svec.h" |
53 | #include "tag.h" | |
54 | #include "timeval.h" | |
4f2cad2c | 55 | #include "unixctl.h" |
064af421 | 56 | #include "vconn.h" |
064af421 BP |
57 | #include "xtoxll.h" |
58 | ||
59 | #define THIS_MODULE VLM_ofproto | |
60 | #include "vlog.h" | |
61 | ||
72b06300 | 62 | #include "sflow_api.h" |
064af421 BP |
63 | |
64 | enum { | |
65 | TABLEID_HASH = 0, | |
66 | TABLEID_CLASSIFIER = 1 | |
67 | }; | |
68 | ||
69 | struct ofport { | |
70 | struct netdev *netdev; | |
71 | struct ofp_phy_port opp; /* In host byte order. */ | |
72 | }; | |
73 | ||
74 | static void ofport_free(struct ofport *); | |
75 | static void hton_ofp_phy_port(struct ofp_phy_port *); | |
76 | ||
77 | static int xlate_actions(const union ofp_action *in, size_t n_in, | |
78 | const flow_t *flow, struct ofproto *ofproto, | |
79 | const struct ofpbuf *packet, | |
80 | struct odp_actions *out, tag_type *tags, | |
6a07af36 | 81 | bool *may_set_up_flow, uint16_t *nf_output_iface); |
064af421 BP |
82 | |
83 | struct rule { | |
84 | struct cls_rule cr; | |
85 | ||
39997502 JP |
86 | uint64_t flow_cookie; /* Controller-issued identifier. |
87 | (Kept in network-byte order.) */ | |
064af421 BP |
88 | uint16_t idle_timeout; /* In seconds from time of last use. */ |
89 | uint16_t hard_timeout; /* In seconds from time of creation. */ | |
ca069229 | 90 | bool send_flow_removed; /* Send a flow removed message? */ |
064af421 BP |
91 | long long int used; /* Last-used time (0 if never used). */ |
92 | long long int created; /* Creation time. */ | |
93 | uint64_t packet_count; /* Number of packets received. */ | |
94 | uint64_t byte_count; /* Number of bytes received. */ | |
95 | uint64_t accounted_bytes; /* Number of bytes passed to account_cb. */ | |
064af421 | 96 | tag_type tags; /* Tags (set only by hooks). */ |
0193b2af | 97 | struct netflow_flow nf_flow; /* Per-flow NetFlow tracking data. */ |
064af421 BP |
98 | |
99 | /* If 'super' is non-NULL, this rule is a subrule, that is, it is an | |
100 | * exact-match rule (having cr.wc.wildcards of 0) generated from the | |
101 | * wildcard rule 'super'. In this case, 'list' is an element of the | |
102 | * super-rule's list. | |
103 | * | |
104 | * If 'super' is NULL, this rule is a super-rule, and 'list' is the head of | |
105 | * a list of subrules. A super-rule with no wildcards (where | |
106 | * cr.wc.wildcards is 0) will never have any subrules. */ | |
107 | struct rule *super; | |
108 | struct list list; | |
109 | ||
110 | /* OpenFlow actions. | |
79eee1eb BP |
111 | * |
112 | * 'n_actions' is the number of elements in the 'actions' array. A single | |
113 | * action may take up more more than one element's worth of space. | |
064af421 BP |
114 | * |
115 | * A subrule has no actions (it uses the super-rule's actions). */ | |
116 | int n_actions; | |
117 | union ofp_action *actions; | |
118 | ||
119 | /* Datapath actions. | |
120 | * | |
121 | * A super-rule with wildcard fields never has ODP actions (since the | |
122 | * datapath only supports exact-match flows). */ | |
123 | bool installed; /* Installed in datapath? */ | |
124 | bool may_install; /* True ordinarily; false if actions must | |
125 | * be reassessed for every packet. */ | |
126 | int n_odp_actions; | |
127 | union odp_action *odp_actions; | |
128 | }; | |
129 | ||
130 | static inline bool | |
131 | rule_is_hidden(const struct rule *rule) | |
132 | { | |
133 | /* Subrules are merely an implementation detail, so hide them from the | |
134 | * controller. */ | |
135 | if (rule->super != NULL) { | |
136 | return true; | |
137 | } | |
138 | ||
8cd4882f | 139 | /* Rules with priority higher than UINT16_MAX are set up by ofproto itself |
064af421 BP |
140 | * (e.g. by in-band control) and are intentionally hidden from the |
141 | * controller. */ | |
142 | if (rule->cr.priority > UINT16_MAX) { | |
143 | return true; | |
144 | } | |
145 | ||
146 | return false; | |
147 | } | |
148 | ||
0193b2af JG |
149 | static struct rule *rule_create(struct ofproto *, struct rule *super, |
150 | const union ofp_action *, size_t n_actions, | |
ca069229 | 151 | uint16_t idle_timeout, uint16_t hard_timeout, |
39997502 | 152 | uint64_t flow_cookie, bool send_flow_removed); |
064af421 BP |
153 | static void rule_free(struct rule *); |
154 | static void rule_destroy(struct ofproto *, struct rule *); | |
155 | static struct rule *rule_from_cls_rule(const struct cls_rule *); | |
156 | static void rule_insert(struct ofproto *, struct rule *, | |
157 | struct ofpbuf *packet, uint16_t in_port); | |
158 | static void rule_remove(struct ofproto *, struct rule *); | |
159 | static bool rule_make_actions(struct ofproto *, struct rule *, | |
160 | const struct ofpbuf *packet); | |
161 | static void rule_install(struct ofproto *, struct rule *, | |
162 | struct rule *displaced_rule); | |
163 | static void rule_uninstall(struct ofproto *, struct rule *); | |
164 | static void rule_post_uninstall(struct ofproto *, struct rule *); | |
ca069229 JP |
165 | static void send_flow_removed(struct ofproto *p, struct rule *rule, |
166 | long long int now, uint8_t reason); | |
064af421 BP |
167 | |
168 | struct ofconn { | |
169 | struct list node; | |
170 | struct rconn *rconn; | |
171 | struct pktbuf *pktbuf; | |
064af421 BP |
172 | int miss_send_len; |
173 | ||
174 | struct rconn_packet_counter *packet_in_counter; | |
175 | ||
176 | /* Number of OpenFlow messages queued as replies to OpenFlow requests, and | |
177 | * the maximum number before we stop reading OpenFlow requests. */ | |
178 | #define OFCONN_REPLY_MAX 100 | |
179 | struct rconn_packet_counter *reply_counter; | |
180 | }; | |
181 | ||
182 | static struct ofconn *ofconn_create(struct ofproto *, struct rconn *); | |
c475ae67 | 183 | static void ofconn_destroy(struct ofconn *); |
064af421 BP |
184 | static void ofconn_run(struct ofconn *, struct ofproto *); |
185 | static void ofconn_wait(struct ofconn *); | |
186 | static void queue_tx(struct ofpbuf *msg, const struct ofconn *ofconn, | |
187 | struct rconn_packet_counter *counter); | |
188 | ||
189 | struct ofproto { | |
190 | /* Settings. */ | |
191 | uint64_t datapath_id; /* Datapath ID. */ | |
192 | uint64_t fallback_dpid; /* Datapath ID if no better choice found. */ | |
5a719c38 JP |
193 | char *mfr_desc; /* Manufacturer. */ |
194 | char *hw_desc; /* Hardware. */ | |
195 | char *sw_desc; /* Software version. */ | |
196 | char *serial_desc; /* Serial number. */ | |
8abc4ed7 | 197 | char *dp_desc; /* Datapath description. */ |
064af421 BP |
198 | |
199 | /* Datapath. */ | |
c228a364 | 200 | struct dpif *dpif; |
e9e28be3 | 201 | struct netdev_monitor *netdev_monitor; |
064af421 BP |
202 | struct port_array ports; /* Index is ODP port nr; ofport->opp.port_no is |
203 | * OFP port nr. */ | |
204 | struct shash port_by_name; | |
205 | uint32_t max_ports; | |
206 | ||
207 | /* Configuration. */ | |
208 | struct switch_status *switch_status; | |
209 | struct status_category *ss_cat; | |
210 | struct in_band *in_band; | |
211 | struct discovery *discovery; | |
212 | struct fail_open *fail_open; | |
213 | struct pinsched *miss_sched, *action_sched; | |
064af421 | 214 | struct netflow *netflow; |
72b06300 | 215 | struct ofproto_sflow *sflow; |
064af421 BP |
216 | |
217 | /* Flow table. */ | |
218 | struct classifier cls; | |
219 | bool need_revalidate; | |
220 | long long int next_expiration; | |
221 | struct tag_set revalidate_set; | |
659586ef | 222 | bool tun_id_from_cookie; |
064af421 BP |
223 | |
224 | /* OpenFlow connections. */ | |
225 | struct list all_conns; | |
226 | struct ofconn *controller; | |
227 | struct pvconn **listeners; | |
228 | size_t n_listeners; | |
229 | struct pvconn **snoops; | |
230 | size_t n_snoops; | |
231 | ||
232 | /* Hooks for ovs-vswitchd. */ | |
233 | const struct ofhooks *ofhooks; | |
234 | void *aux; | |
235 | ||
236 | /* Used by default ofhooks. */ | |
237 | struct mac_learning *ml; | |
238 | }; | |
239 | ||
240 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
241 | ||
242 | static const struct ofhooks default_ofhooks; | |
243 | ||
fa60c019 | 244 | static uint64_t pick_datapath_id(const struct ofproto *); |
064af421 BP |
245 | static uint64_t pick_fallback_dpid(void); |
246 | static void send_packet_in_miss(struct ofpbuf *, void *ofproto); | |
247 | static void send_packet_in_action(struct ofpbuf *, void *ofproto); | |
248 | static void update_used(struct ofproto *); | |
0193b2af JG |
249 | static void update_stats(struct ofproto *, struct rule *, |
250 | const struct odp_flow_stats *); | |
064af421 | 251 | static void expire_rule(struct cls_rule *, void *ofproto); |
0193b2af | 252 | static void active_timeout(struct ofproto *ofproto, struct rule *rule); |
064af421 BP |
253 | static bool revalidate_rule(struct ofproto *p, struct rule *rule); |
254 | static void revalidate_cb(struct cls_rule *rule_, void *p_); | |
255 | ||
256 | static void handle_odp_msg(struct ofproto *, struct ofpbuf *); | |
257 | ||
258 | static void handle_openflow(struct ofconn *, struct ofproto *, | |
259 | struct ofpbuf *); | |
260 | ||
72b06300 BP |
261 | static void refresh_port_groups(struct ofproto *); |
262 | ||
064af421 BP |
263 | static void update_port(struct ofproto *, const char *devname); |
264 | static int init_ports(struct ofproto *); | |
265 | static void reinit_ports(struct ofproto *); | |
266 | ||
267 | int | |
1a6f1e2a JG |
268 | ofproto_create(const char *datapath, const char *datapath_type, |
269 | const struct ofhooks *ofhooks, void *aux, | |
064af421 BP |
270 | struct ofproto **ofprotop) |
271 | { | |
064af421 BP |
272 | struct odp_stats stats; |
273 | struct ofproto *p; | |
c228a364 | 274 | struct dpif *dpif; |
064af421 BP |
275 | int error; |
276 | ||
277 | *ofprotop = NULL; | |
278 | ||
279 | /* Connect to datapath and start listening for messages. */ | |
1a6f1e2a | 280 | error = dpif_open(datapath, datapath_type, &dpif); |
064af421 BP |
281 | if (error) { |
282 | VLOG_ERR("failed to open datapath %s: %s", datapath, strerror(error)); | |
283 | return error; | |
284 | } | |
c228a364 | 285 | error = dpif_get_dp_stats(dpif, &stats); |
064af421 BP |
286 | if (error) { |
287 | VLOG_ERR("failed to obtain stats for datapath %s: %s", | |
288 | datapath, strerror(error)); | |
c228a364 | 289 | dpif_close(dpif); |
064af421 BP |
290 | return error; |
291 | } | |
72b06300 | 292 | error = dpif_recv_set_mask(dpif, ODPL_MISS | ODPL_ACTION | ODPL_SFLOW); |
064af421 BP |
293 | if (error) { |
294 | VLOG_ERR("failed to listen on datapath %s: %s", | |
295 | datapath, strerror(error)); | |
c228a364 | 296 | dpif_close(dpif); |
064af421 BP |
297 | return error; |
298 | } | |
c228a364 | 299 | dpif_flow_flush(dpif); |
8f24562a | 300 | dpif_recv_purge(dpif); |
064af421 BP |
301 | |
302 | /* Initialize settings. */ | |
ec6fde61 | 303 | p = xzalloc(sizeof *p); |
064af421 | 304 | p->fallback_dpid = pick_fallback_dpid(); |
fa60c019 | 305 | p->datapath_id = p->fallback_dpid; |
5a719c38 JP |
306 | p->mfr_desc = xstrdup(DEFAULT_MFR_DESC); |
307 | p->hw_desc = xstrdup(DEFAULT_HW_DESC); | |
308 | p->sw_desc = xstrdup(DEFAULT_SW_DESC); | |
309 | p->serial_desc = xstrdup(DEFAULT_SERIAL_DESC); | |
23ff2821 | 310 | p->dp_desc = xstrdup(DEFAULT_DP_DESC); |
064af421 BP |
311 | |
312 | /* Initialize datapath. */ | |
313 | p->dpif = dpif; | |
8b61709d | 314 | p->netdev_monitor = netdev_monitor_create(); |
064af421 BP |
315 | port_array_init(&p->ports); |
316 | shash_init(&p->port_by_name); | |
317 | p->max_ports = stats.max_ports; | |
318 | ||
319 | /* Initialize submodules. */ | |
320 | p->switch_status = switch_status_create(p); | |
321 | p->in_band = NULL; | |
322 | p->discovery = NULL; | |
323 | p->fail_open = NULL; | |
324 | p->miss_sched = p->action_sched = NULL; | |
064af421 | 325 | p->netflow = NULL; |
72b06300 | 326 | p->sflow = NULL; |
064af421 BP |
327 | |
328 | /* Initialize flow table. */ | |
329 | classifier_init(&p->cls); | |
330 | p->need_revalidate = false; | |
331 | p->next_expiration = time_msec() + 1000; | |
332 | tag_set_init(&p->revalidate_set); | |
333 | ||
334 | /* Initialize OpenFlow connections. */ | |
335 | list_init(&p->all_conns); | |
f9fb1858 | 336 | p->controller = ofconn_create(p, rconn_create(5, 8)); |
064af421 BP |
337 | p->controller->pktbuf = pktbuf_create(); |
338 | p->controller->miss_send_len = OFP_DEFAULT_MISS_SEND_LEN; | |
339 | p->listeners = NULL; | |
340 | p->n_listeners = 0; | |
341 | p->snoops = NULL; | |
342 | p->n_snoops = 0; | |
343 | ||
344 | /* Initialize hooks. */ | |
345 | if (ofhooks) { | |
346 | p->ofhooks = ofhooks; | |
347 | p->aux = aux; | |
348 | p->ml = NULL; | |
349 | } else { | |
350 | p->ofhooks = &default_ofhooks; | |
351 | p->aux = p; | |
352 | p->ml = mac_learning_create(); | |
353 | } | |
354 | ||
355 | /* Register switch status category. */ | |
356 | p->ss_cat = switch_status_register(p->switch_status, "remote", | |
357 | rconn_status_cb, p->controller->rconn); | |
358 | ||
fa60c019 BP |
359 | /* Pick final datapath ID. */ |
360 | p->datapath_id = pick_datapath_id(p); | |
b123cc3c | 361 | VLOG_INFO("using datapath ID %016"PRIx64, p->datapath_id); |
fa60c019 | 362 | |
064af421 BP |
363 | *ofprotop = p; |
364 | return 0; | |
365 | } | |
366 | ||
367 | void | |
368 | ofproto_set_datapath_id(struct ofproto *p, uint64_t datapath_id) | |
369 | { | |
370 | uint64_t old_dpid = p->datapath_id; | |
fa60c019 | 371 | p->datapath_id = datapath_id ? datapath_id : pick_datapath_id(p); |
064af421 | 372 | if (p->datapath_id != old_dpid) { |
b123cc3c | 373 | VLOG_INFO("datapath ID changed to %016"PRIx64, p->datapath_id); |
064af421 BP |
374 | rconn_reconnect(p->controller->rconn); |
375 | } | |
376 | } | |
377 | ||
064af421 BP |
378 | void |
379 | ofproto_set_probe_interval(struct ofproto *p, int probe_interval) | |
380 | { | |
381 | probe_interval = probe_interval ? MAX(probe_interval, 5) : 0; | |
382 | rconn_set_probe_interval(p->controller->rconn, probe_interval); | |
383 | if (p->fail_open) { | |
384 | int trigger_duration = probe_interval ? probe_interval * 3 : 15; | |
385 | fail_open_set_trigger_duration(p->fail_open, trigger_duration); | |
386 | } | |
387 | } | |
388 | ||
389 | void | |
390 | ofproto_set_max_backoff(struct ofproto *p, int max_backoff) | |
391 | { | |
392 | rconn_set_max_backoff(p->controller->rconn, max_backoff); | |
393 | } | |
394 | ||
395 | void | |
396 | ofproto_set_desc(struct ofproto *p, | |
5a719c38 JP |
397 | const char *mfr_desc, const char *hw_desc, |
398 | const char *sw_desc, const char *serial_desc, | |
8abc4ed7 | 399 | const char *dp_desc) |
064af421 | 400 | { |
5a719c38 JP |
401 | struct ofp_desc_stats *ods; |
402 | ||
403 | if (mfr_desc) { | |
404 | if (strlen(mfr_desc) >= sizeof ods->mfr_desc) { | |
405 | VLOG_WARN("truncating mfr_desc, must be less than %zu characters", | |
406 | sizeof ods->mfr_desc); | |
407 | } | |
408 | free(p->mfr_desc); | |
409 | p->mfr_desc = xstrdup(mfr_desc); | |
064af421 | 410 | } |
5a719c38 JP |
411 | if (hw_desc) { |
412 | if (strlen(hw_desc) >= sizeof ods->hw_desc) { | |
413 | VLOG_WARN("truncating hw_desc, must be less than %zu characters", | |
414 | sizeof ods->hw_desc); | |
415 | } | |
416 | free(p->hw_desc); | |
417 | p->hw_desc = xstrdup(hw_desc); | |
064af421 | 418 | } |
5a719c38 JP |
419 | if (sw_desc) { |
420 | if (strlen(sw_desc) >= sizeof ods->sw_desc) { | |
421 | VLOG_WARN("truncating sw_desc, must be less than %zu characters", | |
422 | sizeof ods->sw_desc); | |
423 | } | |
424 | free(p->sw_desc); | |
425 | p->sw_desc = xstrdup(sw_desc); | |
426 | } | |
427 | if (serial_desc) { | |
428 | if (strlen(serial_desc) >= sizeof ods->serial_num) { | |
429 | VLOG_WARN("truncating serial_desc, must be less than %zu " | |
430 | "characters", | |
431 | sizeof ods->serial_num); | |
432 | } | |
433 | free(p->serial_desc); | |
434 | p->serial_desc = xstrdup(serial_desc); | |
064af421 | 435 | } |
8abc4ed7 | 436 | if (dp_desc) { |
5a719c38 JP |
437 | if (strlen(dp_desc) >= sizeof ods->dp_desc) { |
438 | VLOG_WARN("truncating dp_desc, must be less than %zu characters", | |
439 | sizeof ods->dp_desc); | |
440 | } | |
8abc4ed7 JP |
441 | free(p->dp_desc); |
442 | p->dp_desc = xstrdup(dp_desc); | |
443 | } | |
064af421 BP |
444 | } |
445 | ||
446 | int | |
447 | ofproto_set_in_band(struct ofproto *p, bool in_band) | |
448 | { | |
449 | if (in_band != (p->in_band != NULL)) { | |
450 | if (in_band) { | |
f1acd62b BP |
451 | return in_band_create(p, p->dpif, p->switch_status, |
452 | p->controller->rconn, &p->in_band); | |
064af421 BP |
453 | } else { |
454 | ofproto_set_discovery(p, false, NULL, true); | |
455 | in_band_destroy(p->in_band); | |
456 | p->in_band = NULL; | |
457 | } | |
458 | rconn_reconnect(p->controller->rconn); | |
459 | } | |
460 | return 0; | |
461 | } | |
462 | ||
463 | int | |
464 | ofproto_set_discovery(struct ofproto *p, bool discovery, | |
465 | const char *re, bool update_resolv_conf) | |
466 | { | |
467 | if (discovery != (p->discovery != NULL)) { | |
468 | if (discovery) { | |
469 | int error = ofproto_set_in_band(p, true); | |
470 | if (error) { | |
471 | return error; | |
472 | } | |
473 | error = discovery_create(re, update_resolv_conf, | |
c228a364 | 474 | p->dpif, p->switch_status, |
064af421 BP |
475 | &p->discovery); |
476 | if (error) { | |
477 | return error; | |
478 | } | |
479 | } else { | |
480 | discovery_destroy(p->discovery); | |
481 | p->discovery = NULL; | |
482 | } | |
483 | rconn_disconnect(p->controller->rconn); | |
484 | } else if (discovery) { | |
485 | discovery_set_update_resolv_conf(p->discovery, update_resolv_conf); | |
486 | return discovery_set_accept_controller_re(p->discovery, re); | |
487 | } | |
488 | return 0; | |
489 | } | |
490 | ||
491 | int | |
492 | ofproto_set_controller(struct ofproto *ofproto, const char *controller) | |
493 | { | |
494 | if (ofproto->discovery) { | |
495 | return EINVAL; | |
496 | } else if (controller) { | |
497 | if (strcmp(rconn_get_name(ofproto->controller->rconn), controller)) { | |
498 | return rconn_connect(ofproto->controller->rconn, controller); | |
499 | } else { | |
500 | return 0; | |
501 | } | |
502 | } else { | |
503 | rconn_disconnect(ofproto->controller->rconn); | |
504 | return 0; | |
505 | } | |
506 | } | |
507 | ||
508 | static int | |
509 | set_pvconns(struct pvconn ***pvconnsp, size_t *n_pvconnsp, | |
510 | const struct svec *svec) | |
511 | { | |
512 | struct pvconn **pvconns = *pvconnsp; | |
513 | size_t n_pvconns = *n_pvconnsp; | |
514 | int retval = 0; | |
515 | size_t i; | |
516 | ||
517 | for (i = 0; i < n_pvconns; i++) { | |
518 | pvconn_close(pvconns[i]); | |
519 | } | |
520 | free(pvconns); | |
521 | ||
522 | pvconns = xmalloc(svec->n * sizeof *pvconns); | |
523 | n_pvconns = 0; | |
524 | for (i = 0; i < svec->n; i++) { | |
525 | const char *name = svec->names[i]; | |
526 | struct pvconn *pvconn; | |
527 | int error; | |
528 | ||
529 | error = pvconn_open(name, &pvconn); | |
530 | if (!error) { | |
531 | pvconns[n_pvconns++] = pvconn; | |
532 | } else { | |
533 | VLOG_ERR("failed to listen on %s: %s", name, strerror(error)); | |
534 | if (!retval) { | |
535 | retval = error; | |
536 | } | |
537 | } | |
538 | } | |
539 | ||
540 | *pvconnsp = pvconns; | |
541 | *n_pvconnsp = n_pvconns; | |
542 | ||
543 | return retval; | |
544 | } | |
545 | ||
546 | int | |
547 | ofproto_set_listeners(struct ofproto *ofproto, const struct svec *listeners) | |
548 | { | |
549 | return set_pvconns(&ofproto->listeners, &ofproto->n_listeners, listeners); | |
550 | } | |
551 | ||
552 | int | |
553 | ofproto_set_snoops(struct ofproto *ofproto, const struct svec *snoops) | |
554 | { | |
555 | return set_pvconns(&ofproto->snoops, &ofproto->n_snoops, snoops); | |
556 | } | |
557 | ||
558 | int | |
0193b2af JG |
559 | ofproto_set_netflow(struct ofproto *ofproto, |
560 | const struct netflow_options *nf_options) | |
064af421 | 561 | { |
76343538 | 562 | if (nf_options && nf_options->collectors.n) { |
064af421 BP |
563 | if (!ofproto->netflow) { |
564 | ofproto->netflow = netflow_create(); | |
565 | } | |
0193b2af | 566 | return netflow_set_options(ofproto->netflow, nf_options); |
064af421 BP |
567 | } else { |
568 | netflow_destroy(ofproto->netflow); | |
569 | ofproto->netflow = NULL; | |
570 | return 0; | |
571 | } | |
572 | } | |
573 | ||
72b06300 BP |
574 | void |
575 | ofproto_set_sflow(struct ofproto *ofproto, | |
576 | const struct ofproto_sflow_options *oso) | |
577 | { | |
578 | struct ofproto_sflow *os = ofproto->sflow; | |
579 | if (oso) { | |
580 | if (!os) { | |
581 | struct ofport *ofport; | |
582 | unsigned int odp_port; | |
583 | ||
584 | os = ofproto->sflow = ofproto_sflow_create(ofproto->dpif); | |
585 | refresh_port_groups(ofproto); | |
586 | PORT_ARRAY_FOR_EACH (ofport, &ofproto->ports, odp_port) { | |
587 | ofproto_sflow_add_port(os, odp_port, | |
588 | netdev_get_name(ofport->netdev)); | |
589 | } | |
590 | } | |
591 | ofproto_sflow_set_options(os, oso); | |
592 | } else { | |
593 | ofproto_sflow_destroy(os); | |
594 | ofproto->sflow = NULL; | |
595 | } | |
596 | } | |
597 | ||
064af421 BP |
598 | void |
599 | ofproto_set_failure(struct ofproto *ofproto, bool fail_open) | |
600 | { | |
601 | if (fail_open) { | |
602 | struct rconn *rconn = ofproto->controller->rconn; | |
603 | int trigger_duration = rconn_get_probe_interval(rconn) * 3; | |
604 | if (!ofproto->fail_open) { | |
605 | ofproto->fail_open = fail_open_create(ofproto, trigger_duration, | |
606 | ofproto->switch_status, | |
607 | rconn); | |
608 | } else { | |
609 | fail_open_set_trigger_duration(ofproto->fail_open, | |
610 | trigger_duration); | |
611 | } | |
612 | } else { | |
613 | fail_open_destroy(ofproto->fail_open); | |
614 | ofproto->fail_open = NULL; | |
615 | } | |
616 | } | |
617 | ||
618 | void | |
619 | ofproto_set_rate_limit(struct ofproto *ofproto, | |
620 | int rate_limit, int burst_limit) | |
621 | { | |
622 | if (rate_limit > 0) { | |
623 | if (!ofproto->miss_sched) { | |
624 | ofproto->miss_sched = pinsched_create(rate_limit, burst_limit, | |
625 | ofproto->switch_status); | |
626 | ofproto->action_sched = pinsched_create(rate_limit, burst_limit, | |
627 | NULL); | |
628 | } else { | |
629 | pinsched_set_limits(ofproto->miss_sched, rate_limit, burst_limit); | |
630 | pinsched_set_limits(ofproto->action_sched, | |
631 | rate_limit, burst_limit); | |
632 | } | |
633 | } else { | |
634 | pinsched_destroy(ofproto->miss_sched); | |
635 | ofproto->miss_sched = NULL; | |
636 | pinsched_destroy(ofproto->action_sched); | |
637 | ofproto->action_sched = NULL; | |
638 | } | |
639 | } | |
640 | ||
641 | int | |
67a4917b | 642 | ofproto_set_stp(struct ofproto *ofproto OVS_UNUSED, bool enable_stp) |
064af421 BP |
643 | { |
644 | /* XXX */ | |
645 | if (enable_stp) { | |
646 | VLOG_WARN("STP is not yet implemented"); | |
647 | return EINVAL; | |
648 | } else { | |
649 | return 0; | |
650 | } | |
651 | } | |
652 | ||
064af421 BP |
653 | uint64_t |
654 | ofproto_get_datapath_id(const struct ofproto *ofproto) | |
655 | { | |
656 | return ofproto->datapath_id; | |
657 | } | |
658 | ||
659 | int | |
660 | ofproto_get_probe_interval(const struct ofproto *ofproto) | |
661 | { | |
662 | return rconn_get_probe_interval(ofproto->controller->rconn); | |
663 | } | |
664 | ||
665 | int | |
666 | ofproto_get_max_backoff(const struct ofproto *ofproto) | |
667 | { | |
668 | return rconn_get_max_backoff(ofproto->controller->rconn); | |
669 | } | |
670 | ||
671 | bool | |
672 | ofproto_get_in_band(const struct ofproto *ofproto) | |
673 | { | |
674 | return ofproto->in_band != NULL; | |
675 | } | |
676 | ||
677 | bool | |
678 | ofproto_get_discovery(const struct ofproto *ofproto) | |
679 | { | |
680 | return ofproto->discovery != NULL; | |
681 | } | |
682 | ||
683 | const char * | |
684 | ofproto_get_controller(const struct ofproto *ofproto) | |
685 | { | |
686 | return rconn_get_name(ofproto->controller->rconn); | |
687 | } | |
688 | ||
689 | void | |
690 | ofproto_get_listeners(const struct ofproto *ofproto, struct svec *listeners) | |
691 | { | |
692 | size_t i; | |
693 | ||
694 | for (i = 0; i < ofproto->n_listeners; i++) { | |
695 | svec_add(listeners, pvconn_get_name(ofproto->listeners[i])); | |
696 | } | |
697 | } | |
698 | ||
699 | void | |
700 | ofproto_get_snoops(const struct ofproto *ofproto, struct svec *snoops) | |
701 | { | |
702 | size_t i; | |
703 | ||
704 | for (i = 0; i < ofproto->n_snoops; i++) { | |
705 | svec_add(snoops, pvconn_get_name(ofproto->snoops[i])); | |
706 | } | |
707 | } | |
708 | ||
709 | void | |
710 | ofproto_destroy(struct ofproto *p) | |
711 | { | |
712 | struct ofconn *ofconn, *next_ofconn; | |
713 | struct ofport *ofport; | |
714 | unsigned int port_no; | |
715 | size_t i; | |
716 | ||
717 | if (!p) { | |
718 | return; | |
719 | } | |
720 | ||
2f6d3445 BP |
721 | /* Destroy fail-open early, because it touches the classifier. */ |
722 | ofproto_set_failure(p, false); | |
723 | ||
064af421 BP |
724 | ofproto_flush_flows(p); |
725 | classifier_destroy(&p->cls); | |
726 | ||
727 | LIST_FOR_EACH_SAFE (ofconn, next_ofconn, struct ofconn, node, | |
728 | &p->all_conns) { | |
c475ae67 | 729 | ofconn_destroy(ofconn); |
064af421 BP |
730 | } |
731 | ||
c228a364 | 732 | dpif_close(p->dpif); |
e9e28be3 | 733 | netdev_monitor_destroy(p->netdev_monitor); |
064af421 BP |
734 | PORT_ARRAY_FOR_EACH (ofport, &p->ports, port_no) { |
735 | ofport_free(ofport); | |
736 | } | |
737 | shash_destroy(&p->port_by_name); | |
738 | ||
739 | switch_status_destroy(p->switch_status); | |
740 | in_band_destroy(p->in_band); | |
741 | discovery_destroy(p->discovery); | |
064af421 BP |
742 | pinsched_destroy(p->miss_sched); |
743 | pinsched_destroy(p->action_sched); | |
064af421 | 744 | netflow_destroy(p->netflow); |
72b06300 | 745 | ofproto_sflow_destroy(p->sflow); |
064af421 BP |
746 | |
747 | switch_status_unregister(p->ss_cat); | |
748 | ||
749 | for (i = 0; i < p->n_listeners; i++) { | |
750 | pvconn_close(p->listeners[i]); | |
751 | } | |
752 | free(p->listeners); | |
753 | ||
754 | for (i = 0; i < p->n_snoops; i++) { | |
755 | pvconn_close(p->snoops[i]); | |
756 | } | |
757 | free(p->snoops); | |
758 | ||
759 | mac_learning_destroy(p->ml); | |
760 | ||
5a719c38 JP |
761 | free(p->mfr_desc); |
762 | free(p->hw_desc); | |
763 | free(p->sw_desc); | |
764 | free(p->serial_desc); | |
cb871ae0 JP |
765 | free(p->dp_desc); |
766 | ||
3b917492 BP |
767 | port_array_destroy(&p->ports); |
768 | ||
064af421 BP |
769 | free(p); |
770 | } | |
771 | ||
772 | int | |
773 | ofproto_run(struct ofproto *p) | |
774 | { | |
775 | int error = ofproto_run1(p); | |
776 | if (!error) { | |
777 | error = ofproto_run2(p, false); | |
778 | } | |
779 | return error; | |
780 | } | |
781 | ||
e9e28be3 BP |
782 | static void |
783 | process_port_change(struct ofproto *ofproto, int error, char *devname) | |
784 | { | |
785 | if (error == ENOBUFS) { | |
786 | reinit_ports(ofproto); | |
787 | } else if (!error) { | |
788 | update_port(ofproto, devname); | |
789 | free(devname); | |
790 | } | |
791 | } | |
792 | ||
064af421 BP |
793 | int |
794 | ofproto_run1(struct ofproto *p) | |
795 | { | |
796 | struct ofconn *ofconn, *next_ofconn; | |
797 | char *devname; | |
798 | int error; | |
799 | int i; | |
800 | ||
149f577a JG |
801 | if (shash_is_empty(&p->port_by_name)) { |
802 | init_ports(p); | |
803 | } | |
804 | ||
064af421 BP |
805 | for (i = 0; i < 50; i++) { |
806 | struct ofpbuf *buf; | |
807 | int error; | |
808 | ||
c228a364 | 809 | error = dpif_recv(p->dpif, &buf); |
064af421 BP |
810 | if (error) { |
811 | if (error == ENODEV) { | |
812 | /* Someone destroyed the datapath behind our back. The caller | |
813 | * better destroy us and give up, because we're just going to | |
814 | * spin from here on out. */ | |
39a559f2 BP |
815 | static struct vlog_rate_limit rl2 = VLOG_RATE_LIMIT_INIT(1, 5); |
816 | VLOG_ERR_RL(&rl2, "%s: datapath was destroyed externally", | |
c228a364 | 817 | dpif_name(p->dpif)); |
064af421 BP |
818 | return ENODEV; |
819 | } | |
820 | break; | |
821 | } | |
822 | ||
823 | handle_odp_msg(p, buf); | |
824 | } | |
825 | ||
e9e28be3 BP |
826 | while ((error = dpif_port_poll(p->dpif, &devname)) != EAGAIN) { |
827 | process_port_change(p, error, devname); | |
828 | } | |
829 | while ((error = netdev_monitor_poll(p->netdev_monitor, | |
830 | &devname)) != EAGAIN) { | |
831 | process_port_change(p, error, devname); | |
064af421 BP |
832 | } |
833 | ||
834 | if (p->in_band) { | |
835 | in_band_run(p->in_band); | |
836 | } | |
837 | if (p->discovery) { | |
838 | char *controller_name; | |
839 | if (rconn_is_connectivity_questionable(p->controller->rconn)) { | |
840 | discovery_question_connectivity(p->discovery); | |
841 | } | |
842 | if (discovery_run(p->discovery, &controller_name)) { | |
843 | if (controller_name) { | |
844 | rconn_connect(p->controller->rconn, controller_name); | |
845 | } else { | |
846 | rconn_disconnect(p->controller->rconn); | |
847 | } | |
848 | } | |
849 | } | |
064af421 BP |
850 | pinsched_run(p->miss_sched, send_packet_in_miss, p); |
851 | pinsched_run(p->action_sched, send_packet_in_action, p); | |
064af421 BP |
852 | |
853 | LIST_FOR_EACH_SAFE (ofconn, next_ofconn, struct ofconn, node, | |
854 | &p->all_conns) { | |
855 | ofconn_run(ofconn, p); | |
856 | } | |
857 | ||
7778bd15 BP |
858 | /* Fail-open maintenance. Do this after processing the ofconns since |
859 | * fail-open checks the status of the controller rconn. */ | |
860 | if (p->fail_open) { | |
861 | fail_open_run(p->fail_open); | |
862 | } | |
863 | ||
064af421 BP |
864 | for (i = 0; i < p->n_listeners; i++) { |
865 | struct vconn *vconn; | |
866 | int retval; | |
867 | ||
868 | retval = pvconn_accept(p->listeners[i], OFP_VERSION, &vconn); | |
869 | if (!retval) { | |
870 | ofconn_create(p, rconn_new_from_vconn("passive", vconn)); | |
871 | } else if (retval != EAGAIN) { | |
872 | VLOG_WARN_RL(&rl, "accept failed (%s)", strerror(retval)); | |
873 | } | |
874 | } | |
875 | ||
876 | for (i = 0; i < p->n_snoops; i++) { | |
877 | struct vconn *vconn; | |
878 | int retval; | |
879 | ||
880 | retval = pvconn_accept(p->snoops[i], OFP_VERSION, &vconn); | |
881 | if (!retval) { | |
882 | rconn_add_monitor(p->controller->rconn, vconn); | |
883 | } else if (retval != EAGAIN) { | |
884 | VLOG_WARN_RL(&rl, "accept failed (%s)", strerror(retval)); | |
885 | } | |
886 | } | |
887 | ||
888 | if (time_msec() >= p->next_expiration) { | |
889 | COVERAGE_INC(ofproto_expiration); | |
890 | p->next_expiration = time_msec() + 1000; | |
891 | update_used(p); | |
892 | ||
893 | classifier_for_each(&p->cls, CLS_INC_ALL, expire_rule, p); | |
894 | ||
895 | /* Let the hook know that we're at a stable point: all outstanding data | |
896 | * in existing flows has been accounted to the account_cb. Thus, the | |
897 | * hook can now reasonably do operations that depend on having accurate | |
898 | * flow volume accounting (currently, that's just bond rebalancing). */ | |
899 | if (p->ofhooks->account_checkpoint_cb) { | |
900 | p->ofhooks->account_checkpoint_cb(p->aux); | |
901 | } | |
902 | } | |
903 | ||
904 | if (p->netflow) { | |
905 | netflow_run(p->netflow); | |
906 | } | |
72b06300 BP |
907 | if (p->sflow) { |
908 | ofproto_sflow_run(p->sflow); | |
909 | } | |
064af421 BP |
910 | |
911 | return 0; | |
912 | } | |
913 | ||
914 | struct revalidate_cbdata { | |
915 | struct ofproto *ofproto; | |
916 | bool revalidate_all; /* Revalidate all exact-match rules? */ | |
917 | bool revalidate_subrules; /* Revalidate all exact-match subrules? */ | |
918 | struct tag_set revalidate_set; /* Set of tags to revalidate. */ | |
919 | }; | |
920 | ||
921 | int | |
922 | ofproto_run2(struct ofproto *p, bool revalidate_all) | |
923 | { | |
924 | if (p->need_revalidate || revalidate_all | |
925 | || !tag_set_is_empty(&p->revalidate_set)) { | |
926 | struct revalidate_cbdata cbdata; | |
927 | cbdata.ofproto = p; | |
928 | cbdata.revalidate_all = revalidate_all; | |
929 | cbdata.revalidate_subrules = p->need_revalidate; | |
930 | cbdata.revalidate_set = p->revalidate_set; | |
931 | tag_set_init(&p->revalidate_set); | |
932 | COVERAGE_INC(ofproto_revalidate); | |
933 | classifier_for_each(&p->cls, CLS_INC_EXACT, revalidate_cb, &cbdata); | |
934 | p->need_revalidate = false; | |
935 | } | |
936 | ||
937 | return 0; | |
938 | } | |
939 | ||
940 | void | |
941 | ofproto_wait(struct ofproto *p) | |
942 | { | |
943 | struct ofconn *ofconn; | |
944 | size_t i; | |
945 | ||
c228a364 | 946 | dpif_recv_wait(p->dpif); |
e9e28be3 BP |
947 | dpif_port_poll_wait(p->dpif); |
948 | netdev_monitor_poll_wait(p->netdev_monitor); | |
064af421 BP |
949 | LIST_FOR_EACH (ofconn, struct ofconn, node, &p->all_conns) { |
950 | ofconn_wait(ofconn); | |
951 | } | |
952 | if (p->in_band) { | |
953 | in_band_wait(p->in_band); | |
954 | } | |
955 | if (p->discovery) { | |
956 | discovery_wait(p->discovery); | |
957 | } | |
958 | if (p->fail_open) { | |
959 | fail_open_wait(p->fail_open); | |
960 | } | |
961 | pinsched_wait(p->miss_sched); | |
962 | pinsched_wait(p->action_sched); | |
72b06300 BP |
963 | if (p->sflow) { |
964 | ofproto_sflow_wait(p->sflow); | |
965 | } | |
064af421 BP |
966 | if (!tag_set_is_empty(&p->revalidate_set)) { |
967 | poll_immediate_wake(); | |
968 | } | |
969 | if (p->need_revalidate) { | |
970 | /* Shouldn't happen, but if it does just go around again. */ | |
971 | VLOG_DBG_RL(&rl, "need revalidate in ofproto_wait_cb()"); | |
972 | poll_immediate_wake(); | |
973 | } else if (p->next_expiration != LLONG_MAX) { | |
974 | poll_timer_wait(p->next_expiration - time_msec()); | |
975 | } | |
976 | for (i = 0; i < p->n_listeners; i++) { | |
977 | pvconn_wait(p->listeners[i]); | |
978 | } | |
979 | for (i = 0; i < p->n_snoops; i++) { | |
980 | pvconn_wait(p->snoops[i]); | |
981 | } | |
982 | } | |
983 | ||
984 | void | |
985 | ofproto_revalidate(struct ofproto *ofproto, tag_type tag) | |
986 | { | |
987 | tag_set_add(&ofproto->revalidate_set, tag); | |
988 | } | |
989 | ||
990 | struct tag_set * | |
991 | ofproto_get_revalidate_set(struct ofproto *ofproto) | |
992 | { | |
993 | return &ofproto->revalidate_set; | |
994 | } | |
995 | ||
996 | bool | |
997 | ofproto_is_alive(const struct ofproto *p) | |
998 | { | |
999 | return p->discovery || rconn_is_alive(p->controller->rconn); | |
1000 | } | |
1001 | ||
1002 | int | |
1003 | ofproto_send_packet(struct ofproto *p, const flow_t *flow, | |
1004 | const union ofp_action *actions, size_t n_actions, | |
1005 | const struct ofpbuf *packet) | |
1006 | { | |
1007 | struct odp_actions odp_actions; | |
1008 | int error; | |
1009 | ||
1010 | error = xlate_actions(actions, n_actions, flow, p, packet, &odp_actions, | |
6a07af36 | 1011 | NULL, NULL, NULL); |
064af421 BP |
1012 | if (error) { |
1013 | return error; | |
1014 | } | |
1015 | ||
1016 | /* XXX Should we translate the dpif_execute() errno value into an OpenFlow | |
1017 | * error code? */ | |
c228a364 | 1018 | dpif_execute(p->dpif, flow->in_port, odp_actions.actions, |
064af421 BP |
1019 | odp_actions.n_actions, packet); |
1020 | return 0; | |
1021 | } | |
1022 | ||
1023 | void | |
1024 | ofproto_add_flow(struct ofproto *p, | |
1025 | const flow_t *flow, uint32_t wildcards, unsigned int priority, | |
1026 | const union ofp_action *actions, size_t n_actions, | |
1027 | int idle_timeout) | |
1028 | { | |
1029 | struct rule *rule; | |
0193b2af | 1030 | rule = rule_create(p, NULL, actions, n_actions, |
ca069229 | 1031 | idle_timeout >= 0 ? idle_timeout : 5 /* XXX */, |
39997502 | 1032 | 0, 0, false); |
659586ef | 1033 | cls_rule_from_flow(flow, wildcards, priority, &rule->cr); |
064af421 BP |
1034 | rule_insert(p, rule, NULL, 0); |
1035 | } | |
1036 | ||
1037 | void | |
1038 | ofproto_delete_flow(struct ofproto *ofproto, const flow_t *flow, | |
1039 | uint32_t wildcards, unsigned int priority) | |
1040 | { | |
1041 | struct rule *rule; | |
1042 | ||
1043 | rule = rule_from_cls_rule(classifier_find_rule_exactly(&ofproto->cls, | |
1044 | flow, wildcards, | |
1045 | priority)); | |
1046 | if (rule) { | |
1047 | rule_remove(ofproto, rule); | |
1048 | } | |
1049 | } | |
1050 | ||
1051 | static void | |
1052 | destroy_rule(struct cls_rule *rule_, void *ofproto_) | |
1053 | { | |
1054 | struct rule *rule = rule_from_cls_rule(rule_); | |
1055 | struct ofproto *ofproto = ofproto_; | |
1056 | ||
1057 | /* Mark the flow as not installed, even though it might really be | |
1058 | * installed, so that rule_remove() doesn't bother trying to uninstall it. | |
1059 | * There is no point in uninstalling it individually since we are about to | |
1060 | * blow away all the flows with dpif_flow_flush(). */ | |
1061 | rule->installed = false; | |
1062 | ||
1063 | rule_remove(ofproto, rule); | |
1064 | } | |
1065 | ||
1066 | void | |
1067 | ofproto_flush_flows(struct ofproto *ofproto) | |
1068 | { | |
1069 | COVERAGE_INC(ofproto_flush); | |
1070 | classifier_for_each(&ofproto->cls, CLS_INC_ALL, destroy_rule, ofproto); | |
c228a364 | 1071 | dpif_flow_flush(ofproto->dpif); |
064af421 BP |
1072 | if (ofproto->in_band) { |
1073 | in_band_flushed(ofproto->in_band); | |
1074 | } | |
1075 | if (ofproto->fail_open) { | |
1076 | fail_open_flushed(ofproto->fail_open); | |
1077 | } | |
1078 | } | |
1079 | \f | |
1080 | static void | |
1081 | reinit_ports(struct ofproto *p) | |
1082 | { | |
1083 | struct svec devnames; | |
1084 | struct ofport *ofport; | |
1085 | unsigned int port_no; | |
1086 | struct odp_port *odp_ports; | |
1087 | size_t n_odp_ports; | |
1088 | size_t i; | |
1089 | ||
1090 | svec_init(&devnames); | |
1091 | PORT_ARRAY_FOR_EACH (ofport, &p->ports, port_no) { | |
1092 | svec_add (&devnames, (char *) ofport->opp.name); | |
1093 | } | |
c228a364 | 1094 | dpif_port_list(p->dpif, &odp_ports, &n_odp_ports); |
064af421 BP |
1095 | for (i = 0; i < n_odp_ports; i++) { |
1096 | svec_add (&devnames, odp_ports[i].devname); | |
1097 | } | |
1098 | free(odp_ports); | |
1099 | ||
1100 | svec_sort_unique(&devnames); | |
1101 | for (i = 0; i < devnames.n; i++) { | |
1102 | update_port(p, devnames.names[i]); | |
1103 | } | |
1104 | svec_destroy(&devnames); | |
1105 | } | |
1106 | ||
72b06300 | 1107 | static size_t |
064af421 BP |
1108 | refresh_port_group(struct ofproto *p, unsigned int group) |
1109 | { | |
1110 | uint16_t *ports; | |
1111 | size_t n_ports; | |
1112 | struct ofport *port; | |
1113 | unsigned int port_no; | |
1114 | ||
1115 | assert(group == DP_GROUP_ALL || group == DP_GROUP_FLOOD); | |
1116 | ||
1117 | ports = xmalloc(port_array_count(&p->ports) * sizeof *ports); | |
1118 | n_ports = 0; | |
1119 | PORT_ARRAY_FOR_EACH (port, &p->ports, port_no) { | |
1120 | if (group == DP_GROUP_ALL || !(port->opp.config & OFPPC_NO_FLOOD)) { | |
1121 | ports[n_ports++] = port_no; | |
1122 | } | |
1123 | } | |
c228a364 | 1124 | dpif_port_group_set(p->dpif, group, ports, n_ports); |
064af421 | 1125 | free(ports); |
72b06300 BP |
1126 | |
1127 | return n_ports; | |
064af421 BP |
1128 | } |
1129 | ||
1130 | static void | |
1131 | refresh_port_groups(struct ofproto *p) | |
1132 | { | |
72b06300 BP |
1133 | size_t n_flood = refresh_port_group(p, DP_GROUP_FLOOD); |
1134 | size_t n_all = refresh_port_group(p, DP_GROUP_ALL); | |
1135 | if (p->sflow) { | |
1136 | ofproto_sflow_set_group_sizes(p->sflow, n_flood, n_all); | |
1137 | } | |
064af421 BP |
1138 | } |
1139 | ||
1140 | static struct ofport * | |
1141 | make_ofport(const struct odp_port *odp_port) | |
1142 | { | |
149f577a | 1143 | struct netdev_options netdev_options; |
064af421 BP |
1144 | enum netdev_flags flags; |
1145 | struct ofport *ofport; | |
1146 | struct netdev *netdev; | |
1147 | bool carrier; | |
1148 | int error; | |
1149 | ||
149f577a JG |
1150 | memset(&netdev_options, 0, sizeof netdev_options); |
1151 | netdev_options.name = odp_port->devname; | |
1152 | netdev_options.ethertype = NETDEV_ETH_TYPE_NONE; | |
1153 | netdev_options.may_open = true; | |
1154 | ||
1155 | error = netdev_open(&netdev_options, &netdev); | |
064af421 BP |
1156 | if (error) { |
1157 | VLOG_WARN_RL(&rl, "ignoring port %s (%"PRIu16") because netdev %s " | |
1158 | "cannot be opened (%s)", | |
1159 | odp_port->devname, odp_port->port, | |
1160 | odp_port->devname, strerror(error)); | |
1161 | return NULL; | |
1162 | } | |
1163 | ||
1164 | ofport = xmalloc(sizeof *ofport); | |
1165 | ofport->netdev = netdev; | |
1166 | ofport->opp.port_no = odp_port_to_ofp_port(odp_port->port); | |
80992a35 | 1167 | netdev_get_etheraddr(netdev, ofport->opp.hw_addr); |
064af421 BP |
1168 | memcpy(ofport->opp.name, odp_port->devname, |
1169 | MIN(sizeof ofport->opp.name, sizeof odp_port->devname)); | |
1170 | ofport->opp.name[sizeof ofport->opp.name - 1] = '\0'; | |
1171 | ||
1172 | netdev_get_flags(netdev, &flags); | |
1173 | ofport->opp.config = flags & NETDEV_UP ? 0 : OFPPC_PORT_DOWN; | |
1174 | ||
1175 | netdev_get_carrier(netdev, &carrier); | |
1176 | ofport->opp.state = carrier ? 0 : OFPPS_LINK_DOWN; | |
1177 | ||
1178 | netdev_get_features(netdev, | |
1179 | &ofport->opp.curr, &ofport->opp.advertised, | |
1180 | &ofport->opp.supported, &ofport->opp.peer); | |
1181 | return ofport; | |
1182 | } | |
1183 | ||
1184 | static bool | |
1185 | ofport_conflicts(const struct ofproto *p, const struct odp_port *odp_port) | |
1186 | { | |
1187 | if (port_array_get(&p->ports, odp_port->port)) { | |
1188 | VLOG_WARN_RL(&rl, "ignoring duplicate port %"PRIu16" in datapath", | |
1189 | odp_port->port); | |
1190 | return true; | |
1191 | } else if (shash_find(&p->port_by_name, odp_port->devname)) { | |
1192 | VLOG_WARN_RL(&rl, "ignoring duplicate device %s in datapath", | |
1193 | odp_port->devname); | |
1194 | return true; | |
1195 | } else { | |
1196 | return false; | |
1197 | } | |
1198 | } | |
1199 | ||
1200 | static int | |
1201 | ofport_equal(const struct ofport *a_, const struct ofport *b_) | |
1202 | { | |
1203 | const struct ofp_phy_port *a = &a_->opp; | |
1204 | const struct ofp_phy_port *b = &b_->opp; | |
1205 | ||
1206 | BUILD_ASSERT_DECL(sizeof *a == 48); /* Detect ofp_phy_port changes. */ | |
1207 | return (a->port_no == b->port_no | |
1208 | && !memcmp(a->hw_addr, b->hw_addr, sizeof a->hw_addr) | |
1209 | && !strcmp((char *) a->name, (char *) b->name) | |
1210 | && a->state == b->state | |
1211 | && a->config == b->config | |
1212 | && a->curr == b->curr | |
1213 | && a->advertised == b->advertised | |
1214 | && a->supported == b->supported | |
1215 | && a->peer == b->peer); | |
1216 | } | |
1217 | ||
1218 | static void | |
1219 | send_port_status(struct ofproto *p, const struct ofport *ofport, | |
1220 | uint8_t reason) | |
1221 | { | |
1222 | /* XXX Should limit the number of queued port status change messages. */ | |
1223 | struct ofconn *ofconn; | |
1224 | LIST_FOR_EACH (ofconn, struct ofconn, node, &p->all_conns) { | |
1225 | struct ofp_port_status *ops; | |
1226 | struct ofpbuf *b; | |
1227 | ||
1228 | ops = make_openflow_xid(sizeof *ops, OFPT_PORT_STATUS, 0, &b); | |
1229 | ops->reason = reason; | |
1230 | ops->desc = ofport->opp; | |
1231 | hton_ofp_phy_port(&ops->desc); | |
1232 | queue_tx(b, ofconn, NULL); | |
1233 | } | |
1234 | if (p->ofhooks->port_changed_cb) { | |
1235 | p->ofhooks->port_changed_cb(reason, &ofport->opp, p->aux); | |
1236 | } | |
1237 | } | |
1238 | ||
1239 | static void | |
1240 | ofport_install(struct ofproto *p, struct ofport *ofport) | |
1241 | { | |
72b06300 BP |
1242 | uint16_t odp_port = ofp_port_to_odp_port(ofport->opp.port_no); |
1243 | const char *netdev_name = (const char *) ofport->opp.name; | |
1244 | ||
e9e28be3 | 1245 | netdev_monitor_add(p->netdev_monitor, ofport->netdev); |
72b06300 BP |
1246 | port_array_set(&p->ports, odp_port, ofport); |
1247 | shash_add(&p->port_by_name, netdev_name, ofport); | |
1248 | if (p->sflow) { | |
1249 | ofproto_sflow_add_port(p->sflow, odp_port, netdev_name); | |
1250 | } | |
064af421 BP |
1251 | } |
1252 | ||
1253 | static void | |
1254 | ofport_remove(struct ofproto *p, struct ofport *ofport) | |
1255 | { | |
72b06300 BP |
1256 | uint16_t odp_port = ofp_port_to_odp_port(ofport->opp.port_no); |
1257 | ||
e9e28be3 | 1258 | netdev_monitor_remove(p->netdev_monitor, ofport->netdev); |
72b06300 | 1259 | port_array_set(&p->ports, odp_port, NULL); |
064af421 BP |
1260 | shash_delete(&p->port_by_name, |
1261 | shash_find(&p->port_by_name, (char *) ofport->opp.name)); | |
72b06300 BP |
1262 | if (p->sflow) { |
1263 | ofproto_sflow_del_port(p->sflow, odp_port); | |
1264 | } | |
064af421 BP |
1265 | } |
1266 | ||
1267 | static void | |
1268 | ofport_free(struct ofport *ofport) | |
1269 | { | |
1270 | if (ofport) { | |
1271 | netdev_close(ofport->netdev); | |
1272 | free(ofport); | |
1273 | } | |
1274 | } | |
1275 | ||
1276 | static void | |
1277 | update_port(struct ofproto *p, const char *devname) | |
1278 | { | |
1279 | struct odp_port odp_port; | |
c874dc6d BP |
1280 | struct ofport *old_ofport; |
1281 | struct ofport *new_ofport; | |
064af421 BP |
1282 | int error; |
1283 | ||
1284 | COVERAGE_INC(ofproto_update_port); | |
c874dc6d BP |
1285 | |
1286 | /* Query the datapath for port information. */ | |
c228a364 | 1287 | error = dpif_port_query_by_name(p->dpif, devname, &odp_port); |
064af421 | 1288 | |
c874dc6d BP |
1289 | /* Find the old ofport. */ |
1290 | old_ofport = shash_find_data(&p->port_by_name, devname); | |
1291 | if (!error) { | |
1292 | if (!old_ofport) { | |
1293 | /* There's no port named 'devname' but there might be a port with | |
1294 | * the same port number. This could happen if a port is deleted | |
1295 | * and then a new one added in its place very quickly, or if a port | |
1296 | * is renamed. In the former case we want to send an OFPPR_DELETE | |
1297 | * and an OFPPR_ADD, and in the latter case we want to send a | |
1298 | * single OFPPR_MODIFY. We can distinguish the cases by comparing | |
1299 | * the old port's ifindex against the new port, or perhaps less | |
1300 | * reliably but more portably by comparing the old port's MAC | |
1301 | * against the new port's MAC. However, this code isn't that smart | |
1302 | * and always sends an OFPPR_MODIFY (XXX). */ | |
1303 | old_ofport = port_array_get(&p->ports, odp_port.port); | |
064af421 | 1304 | } |
c874dc6d | 1305 | } else if (error != ENOENT && error != ENODEV) { |
064af421 BP |
1306 | VLOG_WARN_RL(&rl, "dpif_port_query_by_name returned unexpected error " |
1307 | "%s", strerror(error)); | |
1308 | return; | |
1309 | } | |
c874dc6d BP |
1310 | |
1311 | /* Create a new ofport. */ | |
1312 | new_ofport = !error ? make_ofport(&odp_port) : NULL; | |
1313 | ||
1314 | /* Eliminate a few pathological cases. */ | |
1315 | if (!old_ofport && !new_ofport) { | |
1316 | return; | |
1317 | } else if (old_ofport && new_ofport) { | |
1318 | /* Most of the 'config' bits are OpenFlow soft state, but | |
1319 | * OFPPC_PORT_DOWN is maintained the kernel. So transfer the OpenFlow | |
1320 | * bits from old_ofport. (make_ofport() only sets OFPPC_PORT_DOWN and | |
1321 | * leaves the other bits 0.) */ | |
1322 | new_ofport->opp.config |= old_ofport->opp.config & ~OFPPC_PORT_DOWN; | |
1323 | ||
1324 | if (ofport_equal(old_ofport, new_ofport)) { | |
1325 | /* False alarm--no change. */ | |
1326 | ofport_free(new_ofport); | |
1327 | return; | |
1328 | } | |
1329 | } | |
1330 | ||
1331 | /* Now deal with the normal cases. */ | |
1332 | if (old_ofport) { | |
1333 | ofport_remove(p, old_ofport); | |
1334 | } | |
1335 | if (new_ofport) { | |
1336 | ofport_install(p, new_ofport); | |
1337 | } | |
1338 | send_port_status(p, new_ofport ? new_ofport : old_ofport, | |
1339 | (!old_ofport ? OFPPR_ADD | |
1340 | : !new_ofport ? OFPPR_DELETE | |
1341 | : OFPPR_MODIFY)); | |
1342 | ofport_free(old_ofport); | |
1343 | ||
1344 | /* Update port groups. */ | |
064af421 BP |
1345 | refresh_port_groups(p); |
1346 | } | |
1347 | ||
1348 | static int | |
1349 | init_ports(struct ofproto *p) | |
1350 | { | |
1351 | struct odp_port *ports; | |
1352 | size_t n_ports; | |
1353 | size_t i; | |
1354 | int error; | |
1355 | ||
c228a364 | 1356 | error = dpif_port_list(p->dpif, &ports, &n_ports); |
064af421 BP |
1357 | if (error) { |
1358 | return error; | |
1359 | } | |
1360 | ||
1361 | for (i = 0; i < n_ports; i++) { | |
1362 | const struct odp_port *odp_port = &ports[i]; | |
1363 | if (!ofport_conflicts(p, odp_port)) { | |
1364 | struct ofport *ofport = make_ofport(odp_port); | |
1365 | if (ofport) { | |
1366 | ofport_install(p, ofport); | |
1367 | } | |
1368 | } | |
1369 | } | |
1370 | free(ports); | |
1371 | refresh_port_groups(p); | |
1372 | return 0; | |
1373 | } | |
1374 | \f | |
1375 | static struct ofconn * | |
1376 | ofconn_create(struct ofproto *p, struct rconn *rconn) | |
1377 | { | |
1378 | struct ofconn *ofconn = xmalloc(sizeof *ofconn); | |
1379 | list_push_back(&p->all_conns, &ofconn->node); | |
1380 | ofconn->rconn = rconn; | |
1381 | ofconn->pktbuf = NULL; | |
064af421 BP |
1382 | ofconn->miss_send_len = 0; |
1383 | ofconn->packet_in_counter = rconn_packet_counter_create (); | |
1384 | ofconn->reply_counter = rconn_packet_counter_create (); | |
1385 | return ofconn; | |
1386 | } | |
1387 | ||
1388 | static void | |
c475ae67 | 1389 | ofconn_destroy(struct ofconn *ofconn) |
064af421 | 1390 | { |
064af421 BP |
1391 | list_remove(&ofconn->node); |
1392 | rconn_destroy(ofconn->rconn); | |
1393 | rconn_packet_counter_destroy(ofconn->packet_in_counter); | |
1394 | rconn_packet_counter_destroy(ofconn->reply_counter); | |
1395 | pktbuf_destroy(ofconn->pktbuf); | |
1396 | free(ofconn); | |
1397 | } | |
1398 | ||
1399 | static void | |
1400 | ofconn_run(struct ofconn *ofconn, struct ofproto *p) | |
1401 | { | |
1402 | int iteration; | |
1403 | ||
1404 | rconn_run(ofconn->rconn); | |
1405 | ||
1406 | if (rconn_packet_counter_read (ofconn->reply_counter) < OFCONN_REPLY_MAX) { | |
1407 | /* Limit the number of iterations to prevent other tasks from | |
1408 | * starving. */ | |
1409 | for (iteration = 0; iteration < 50; iteration++) { | |
1410 | struct ofpbuf *of_msg = rconn_recv(ofconn->rconn); | |
1411 | if (!of_msg) { | |
1412 | break; | |
1413 | } | |
7778bd15 BP |
1414 | if (p->fail_open) { |
1415 | fail_open_maybe_recover(p->fail_open); | |
1416 | } | |
064af421 BP |
1417 | handle_openflow(ofconn, p, of_msg); |
1418 | ofpbuf_delete(of_msg); | |
1419 | } | |
1420 | } | |
1421 | ||
1422 | if (ofconn != p->controller && !rconn_is_alive(ofconn->rconn)) { | |
c475ae67 | 1423 | ofconn_destroy(ofconn); |
064af421 BP |
1424 | } |
1425 | } | |
1426 | ||
1427 | static void | |
1428 | ofconn_wait(struct ofconn *ofconn) | |
1429 | { | |
1430 | rconn_run_wait(ofconn->rconn); | |
1431 | if (rconn_packet_counter_read (ofconn->reply_counter) < OFCONN_REPLY_MAX) { | |
1432 | rconn_recv_wait(ofconn->rconn); | |
1433 | } else { | |
1434 | COVERAGE_INC(ofproto_ofconn_stuck); | |
1435 | } | |
1436 | } | |
1437 | \f | |
1438 | /* Caller is responsible for initializing the 'cr' member of the returned | |
1439 | * rule. */ | |
1440 | static struct rule * | |
0193b2af | 1441 | rule_create(struct ofproto *ofproto, struct rule *super, |
064af421 | 1442 | const union ofp_action *actions, size_t n_actions, |
ca069229 | 1443 | uint16_t idle_timeout, uint16_t hard_timeout, |
39997502 | 1444 | uint64_t flow_cookie, bool send_flow_removed) |
064af421 | 1445 | { |
ec6fde61 | 1446 | struct rule *rule = xzalloc(sizeof *rule); |
064af421 BP |
1447 | rule->idle_timeout = idle_timeout; |
1448 | rule->hard_timeout = hard_timeout; | |
39997502 | 1449 | rule->flow_cookie = flow_cookie; |
064af421 | 1450 | rule->used = rule->created = time_msec(); |
ca069229 | 1451 | rule->send_flow_removed = send_flow_removed; |
064af421 BP |
1452 | rule->super = super; |
1453 | if (super) { | |
1454 | list_push_back(&super->list, &rule->list); | |
1455 | } else { | |
1456 | list_init(&rule->list); | |
1457 | } | |
1458 | rule->n_actions = n_actions; | |
1459 | rule->actions = xmemdup(actions, n_actions * sizeof *actions); | |
0193b2af JG |
1460 | netflow_flow_clear(&rule->nf_flow); |
1461 | netflow_flow_update_time(ofproto->netflow, &rule->nf_flow, rule->created); | |
1462 | ||
064af421 BP |
1463 | return rule; |
1464 | } | |
1465 | ||
1466 | static struct rule * | |
1467 | rule_from_cls_rule(const struct cls_rule *cls_rule) | |
1468 | { | |
1469 | return cls_rule ? CONTAINER_OF(cls_rule, struct rule, cr) : NULL; | |
1470 | } | |
1471 | ||
1472 | static void | |
1473 | rule_free(struct rule *rule) | |
1474 | { | |
1475 | free(rule->actions); | |
1476 | free(rule->odp_actions); | |
1477 | free(rule); | |
1478 | } | |
1479 | ||
1480 | /* Destroys 'rule'. If 'rule' is a subrule, also removes it from its | |
1481 | * super-rule's list of subrules. If 'rule' is a super-rule, also iterates | |
1482 | * through all of its subrules and revalidates them, destroying any that no | |
1483 | * longer has a super-rule (which is probably all of them). | |
1484 | * | |
1485 | * Before calling this function, the caller must make have removed 'rule' from | |
1486 | * the classifier. If 'rule' is an exact-match rule, the caller is also | |
1487 | * responsible for ensuring that it has been uninstalled from the datapath. */ | |
1488 | static void | |
1489 | rule_destroy(struct ofproto *ofproto, struct rule *rule) | |
1490 | { | |
1491 | if (!rule->super) { | |
1492 | struct rule *subrule, *next; | |
1493 | LIST_FOR_EACH_SAFE (subrule, next, struct rule, list, &rule->list) { | |
1494 | revalidate_rule(ofproto, subrule); | |
1495 | } | |
1496 | } else { | |
1497 | list_remove(&rule->list); | |
1498 | } | |
1499 | rule_free(rule); | |
1500 | } | |
1501 | ||
1502 | static bool | |
1503 | rule_has_out_port(const struct rule *rule, uint16_t out_port) | |
1504 | { | |
1505 | const union ofp_action *oa; | |
1506 | struct actions_iterator i; | |
1507 | ||
1508 | if (out_port == htons(OFPP_NONE)) { | |
1509 | return true; | |
1510 | } | |
1511 | for (oa = actions_first(&i, rule->actions, rule->n_actions); oa; | |
1512 | oa = actions_next(&i)) { | |
1513 | if (oa->type == htons(OFPAT_OUTPUT) && oa->output.port == out_port) { | |
1514 | return true; | |
1515 | } | |
1516 | } | |
1517 | return false; | |
1518 | } | |
1519 | ||
1520 | /* Executes the actions indicated by 'rule' on 'packet', which is in flow | |
1521 | * 'flow' and is considered to have arrived on ODP port 'in_port'. | |
1522 | * | |
1523 | * The flow that 'packet' actually contains does not need to actually match | |
1524 | * 'rule'; the actions in 'rule' will be applied to it either way. Likewise, | |
1525 | * the packet and byte counters for 'rule' will be credited for the packet sent | |
1526 | * out whether or not the packet actually matches 'rule'. | |
1527 | * | |
1528 | * If 'rule' is an exact-match rule and 'flow' actually equals the rule's flow, | |
1529 | * the caller must already have accurately composed ODP actions for it given | |
1530 | * 'packet' using rule_make_actions(). If 'rule' is a wildcard rule, or if | |
1531 | * 'rule' is an exact-match rule but 'flow' is not the rule's flow, then this | |
1532 | * function will compose a set of ODP actions based on 'rule''s OpenFlow | |
1533 | * actions and apply them to 'packet'. */ | |
1534 | static void | |
1535 | rule_execute(struct ofproto *ofproto, struct rule *rule, | |
1536 | struct ofpbuf *packet, const flow_t *flow) | |
1537 | { | |
1538 | const union odp_action *actions; | |
1539 | size_t n_actions; | |
1540 | struct odp_actions a; | |
1541 | ||
1542 | /* Grab or compose the ODP actions. | |
1543 | * | |
1544 | * The special case for an exact-match 'rule' where 'flow' is not the | |
1545 | * rule's flow is important to avoid, e.g., sending a packet out its input | |
1546 | * port simply because the ODP actions were composed for the wrong | |
1547 | * scenario. */ | |
1548 | if (rule->cr.wc.wildcards || !flow_equal(flow, &rule->cr.flow)) { | |
1549 | struct rule *super = rule->super ? rule->super : rule; | |
1550 | if (xlate_actions(super->actions, super->n_actions, flow, ofproto, | |
6a07af36 | 1551 | packet, &a, NULL, 0, NULL)) { |
064af421 BP |
1552 | return; |
1553 | } | |
1554 | actions = a.actions; | |
1555 | n_actions = a.n_actions; | |
1556 | } else { | |
1557 | actions = rule->odp_actions; | |
1558 | n_actions = rule->n_odp_actions; | |
1559 | } | |
1560 | ||
1561 | /* Execute the ODP actions. */ | |
c228a364 | 1562 | if (!dpif_execute(ofproto->dpif, flow->in_port, |
064af421 BP |
1563 | actions, n_actions, packet)) { |
1564 | struct odp_flow_stats stats; | |
1565 | flow_extract_stats(flow, packet, &stats); | |
0193b2af | 1566 | update_stats(ofproto, rule, &stats); |
064af421 | 1567 | rule->used = time_msec(); |
0193b2af | 1568 | netflow_flow_update_time(ofproto->netflow, &rule->nf_flow, rule->used); |
064af421 BP |
1569 | } |
1570 | } | |
1571 | ||
1572 | static void | |
1573 | rule_insert(struct ofproto *p, struct rule *rule, struct ofpbuf *packet, | |
1574 | uint16_t in_port) | |
1575 | { | |
1576 | struct rule *displaced_rule; | |
1577 | ||
1578 | /* Insert the rule in the classifier. */ | |
1579 | displaced_rule = rule_from_cls_rule(classifier_insert(&p->cls, &rule->cr)); | |
1580 | if (!rule->cr.wc.wildcards) { | |
1581 | rule_make_actions(p, rule, packet); | |
1582 | } | |
1583 | ||
1584 | /* Send the packet and credit it to the rule. */ | |
1585 | if (packet) { | |
1586 | flow_t flow; | |
659586ef | 1587 | flow_extract(packet, 0, in_port, &flow); |
064af421 BP |
1588 | rule_execute(p, rule, packet, &flow); |
1589 | } | |
1590 | ||
1591 | /* Install the rule in the datapath only after sending the packet, to | |
1592 | * avoid packet reordering. */ | |
1593 | if (rule->cr.wc.wildcards) { | |
1594 | COVERAGE_INC(ofproto_add_wc_flow); | |
1595 | p->need_revalidate = true; | |
1596 | } else { | |
1597 | rule_install(p, rule, displaced_rule); | |
1598 | } | |
1599 | ||
1600 | /* Free the rule that was displaced, if any. */ | |
1601 | if (displaced_rule) { | |
1602 | rule_destroy(p, displaced_rule); | |
1603 | } | |
1604 | } | |
1605 | ||
1606 | static struct rule * | |
1607 | rule_create_subrule(struct ofproto *ofproto, struct rule *rule, | |
1608 | const flow_t *flow) | |
1609 | { | |
0193b2af | 1610 | struct rule *subrule = rule_create(ofproto, rule, NULL, 0, |
ca069229 | 1611 | rule->idle_timeout, rule->hard_timeout, |
39997502 | 1612 | 0, false); |
064af421 | 1613 | COVERAGE_INC(ofproto_subrule_create); |
659586ef JG |
1614 | cls_rule_from_flow(flow, 0, (rule->cr.priority <= UINT16_MAX ? UINT16_MAX |
1615 | : rule->cr.priority), &subrule->cr); | |
064af421 BP |
1616 | classifier_insert_exact(&ofproto->cls, &subrule->cr); |
1617 | ||
1618 | return subrule; | |
1619 | } | |
1620 | ||
1621 | static void | |
1622 | rule_remove(struct ofproto *ofproto, struct rule *rule) | |
1623 | { | |
1624 | if (rule->cr.wc.wildcards) { | |
1625 | COVERAGE_INC(ofproto_del_wc_flow); | |
1626 | ofproto->need_revalidate = true; | |
1627 | } else { | |
1628 | rule_uninstall(ofproto, rule); | |
1629 | } | |
1630 | classifier_remove(&ofproto->cls, &rule->cr); | |
1631 | rule_destroy(ofproto, rule); | |
1632 | } | |
1633 | ||
1634 | /* Returns true if the actions changed, false otherwise. */ | |
1635 | static bool | |
1636 | rule_make_actions(struct ofproto *p, struct rule *rule, | |
1637 | const struct ofpbuf *packet) | |
1638 | { | |
1639 | const struct rule *super; | |
1640 | struct odp_actions a; | |
1641 | size_t actions_len; | |
1642 | ||
1643 | assert(!rule->cr.wc.wildcards); | |
1644 | ||
1645 | super = rule->super ? rule->super : rule; | |
1646 | rule->tags = 0; | |
1647 | xlate_actions(super->actions, super->n_actions, &rule->cr.flow, p, | |
6a07af36 | 1648 | packet, &a, &rule->tags, &rule->may_install, |
0193b2af | 1649 | &rule->nf_flow.output_iface); |
064af421 BP |
1650 | |
1651 | actions_len = a.n_actions * sizeof *a.actions; | |
1652 | if (rule->n_odp_actions != a.n_actions | |
1653 | || memcmp(rule->odp_actions, a.actions, actions_len)) { | |
1654 | COVERAGE_INC(ofproto_odp_unchanged); | |
1655 | free(rule->odp_actions); | |
1656 | rule->n_odp_actions = a.n_actions; | |
1657 | rule->odp_actions = xmemdup(a.actions, actions_len); | |
1658 | return true; | |
1659 | } else { | |
1660 | return false; | |
1661 | } | |
1662 | } | |
1663 | ||
1664 | static int | |
1665 | do_put_flow(struct ofproto *ofproto, struct rule *rule, int flags, | |
1666 | struct odp_flow_put *put) | |
1667 | { | |
1668 | memset(&put->flow.stats, 0, sizeof put->flow.stats); | |
1669 | put->flow.key = rule->cr.flow; | |
1670 | put->flow.actions = rule->odp_actions; | |
1671 | put->flow.n_actions = rule->n_odp_actions; | |
ab48643b | 1672 | put->flow.flags = 0; |
064af421 | 1673 | put->flags = flags; |
c228a364 | 1674 | return dpif_flow_put(ofproto->dpif, put); |
064af421 BP |
1675 | } |
1676 | ||
1677 | static void | |
1678 | rule_install(struct ofproto *p, struct rule *rule, struct rule *displaced_rule) | |
1679 | { | |
1680 | assert(!rule->cr.wc.wildcards); | |
1681 | ||
1682 | if (rule->may_install) { | |
1683 | struct odp_flow_put put; | |
1684 | if (!do_put_flow(p, rule, | |
1685 | ODPPF_CREATE | ODPPF_MODIFY | ODPPF_ZERO_STATS, | |
1686 | &put)) { | |
1687 | rule->installed = true; | |
1688 | if (displaced_rule) { | |
14986b31 | 1689 | update_stats(p, displaced_rule, &put.flow.stats); |
064af421 BP |
1690 | rule_post_uninstall(p, displaced_rule); |
1691 | } | |
1692 | } | |
1693 | } else if (displaced_rule) { | |
1694 | rule_uninstall(p, displaced_rule); | |
1695 | } | |
1696 | } | |
1697 | ||
1698 | static void | |
1699 | rule_reinstall(struct ofproto *ofproto, struct rule *rule) | |
1700 | { | |
1701 | if (rule->installed) { | |
1702 | struct odp_flow_put put; | |
1703 | COVERAGE_INC(ofproto_dp_missed); | |
1704 | do_put_flow(ofproto, rule, ODPPF_CREATE | ODPPF_MODIFY, &put); | |
1705 | } else { | |
1706 | rule_install(ofproto, rule, NULL); | |
1707 | } | |
1708 | } | |
1709 | ||
1710 | static void | |
1711 | rule_update_actions(struct ofproto *ofproto, struct rule *rule) | |
1712 | { | |
42c3641c JG |
1713 | bool actions_changed; |
1714 | uint16_t new_out_iface, old_out_iface; | |
1715 | ||
1716 | old_out_iface = rule->nf_flow.output_iface; | |
1717 | actions_changed = rule_make_actions(ofproto, rule, NULL); | |
1718 | ||
064af421 BP |
1719 | if (rule->may_install) { |
1720 | if (rule->installed) { | |
1721 | if (actions_changed) { | |
064af421 | 1722 | struct odp_flow_put put; |
42c3641c JG |
1723 | do_put_flow(ofproto, rule, ODPPF_CREATE | ODPPF_MODIFY |
1724 | | ODPPF_ZERO_STATS, &put); | |
1725 | update_stats(ofproto, rule, &put.flow.stats); | |
1726 | ||
1727 | /* Temporarily set the old output iface so that NetFlow | |
1728 | * messages have the correct output interface for the old | |
1729 | * stats. */ | |
1730 | new_out_iface = rule->nf_flow.output_iface; | |
1731 | rule->nf_flow.output_iface = old_out_iface; | |
1732 | rule_post_uninstall(ofproto, rule); | |
1733 | rule->nf_flow.output_iface = new_out_iface; | |
064af421 BP |
1734 | } |
1735 | } else { | |
1736 | rule_install(ofproto, rule, NULL); | |
1737 | } | |
1738 | } else { | |
1739 | rule_uninstall(ofproto, rule); | |
1740 | } | |
1741 | } | |
1742 | ||
1743 | static void | |
1744 | rule_account(struct ofproto *ofproto, struct rule *rule, uint64_t extra_bytes) | |
1745 | { | |
1746 | uint64_t total_bytes = rule->byte_count + extra_bytes; | |
1747 | ||
1748 | if (ofproto->ofhooks->account_flow_cb | |
1749 | && total_bytes > rule->accounted_bytes) | |
1750 | { | |
1751 | ofproto->ofhooks->account_flow_cb( | |
1752 | &rule->cr.flow, rule->odp_actions, rule->n_odp_actions, | |
1753 | total_bytes - rule->accounted_bytes, ofproto->aux); | |
1754 | rule->accounted_bytes = total_bytes; | |
1755 | } | |
1756 | } | |
1757 | ||
1758 | static void | |
1759 | rule_uninstall(struct ofproto *p, struct rule *rule) | |
1760 | { | |
1761 | assert(!rule->cr.wc.wildcards); | |
1762 | if (rule->installed) { | |
1763 | struct odp_flow odp_flow; | |
1764 | ||
1765 | odp_flow.key = rule->cr.flow; | |
1766 | odp_flow.actions = NULL; | |
1767 | odp_flow.n_actions = 0; | |
ab48643b | 1768 | odp_flow.flags = 0; |
c228a364 | 1769 | if (!dpif_flow_del(p->dpif, &odp_flow)) { |
0193b2af | 1770 | update_stats(p, rule, &odp_flow.stats); |
064af421 BP |
1771 | } |
1772 | rule->installed = false; | |
1773 | ||
1774 | rule_post_uninstall(p, rule); | |
1775 | } | |
1776 | } | |
1777 | ||
0193b2af JG |
1778 | static bool |
1779 | is_controller_rule(struct rule *rule) | |
1780 | { | |
1781 | /* If the only action is send to the controller then don't report | |
1782 | * NetFlow expiration messages since it is just part of the control | |
1783 | * logic for the network and not real traffic. */ | |
1784 | ||
1785 | if (rule && rule->super) { | |
1786 | struct rule *super = rule->super; | |
1787 | ||
1788 | return super->n_actions == 1 && | |
1789 | super->actions[0].type == htons(OFPAT_OUTPUT) && | |
1790 | super->actions[0].output.port == htons(OFPP_CONTROLLER); | |
1791 | } | |
1792 | ||
1793 | return false; | |
1794 | } | |
1795 | ||
064af421 BP |
1796 | static void |
1797 | rule_post_uninstall(struct ofproto *ofproto, struct rule *rule) | |
1798 | { | |
1799 | struct rule *super = rule->super; | |
1800 | ||
1801 | rule_account(ofproto, rule, 0); | |
6a07af36 | 1802 | |
0193b2af | 1803 | if (ofproto->netflow && !is_controller_rule(rule)) { |
064af421 BP |
1804 | struct ofexpired expired; |
1805 | expired.flow = rule->cr.flow; | |
1806 | expired.packet_count = rule->packet_count; | |
1807 | expired.byte_count = rule->byte_count; | |
1808 | expired.used = rule->used; | |
0193b2af | 1809 | netflow_expire(ofproto->netflow, &rule->nf_flow, &expired); |
064af421 BP |
1810 | } |
1811 | if (super) { | |
1812 | super->packet_count += rule->packet_count; | |
1813 | super->byte_count += rule->byte_count; | |
064af421 | 1814 | |
0c0afbec JG |
1815 | /* Reset counters to prevent double counting if the rule ever gets |
1816 | * reinstalled. */ | |
1817 | rule->packet_count = 0; | |
1818 | rule->byte_count = 0; | |
1819 | rule->accounted_bytes = 0; | |
0193b2af JG |
1820 | |
1821 | netflow_flow_clear(&rule->nf_flow); | |
0c0afbec | 1822 | } |
064af421 BP |
1823 | } |
1824 | \f | |
1825 | static void | |
1826 | queue_tx(struct ofpbuf *msg, const struct ofconn *ofconn, | |
1827 | struct rconn_packet_counter *counter) | |
1828 | { | |
1829 | update_openflow_length(msg); | |
1830 | if (rconn_send(ofconn->rconn, msg, counter)) { | |
1831 | ofpbuf_delete(msg); | |
1832 | } | |
1833 | } | |
1834 | ||
1835 | static void | |
1836 | send_error(const struct ofconn *ofconn, const struct ofp_header *oh, | |
1837 | int error, const void *data, size_t len) | |
1838 | { | |
1839 | struct ofpbuf *buf; | |
1840 | struct ofp_error_msg *oem; | |
1841 | ||
1842 | if (!(error >> 16)) { | |
1843 | VLOG_WARN_RL(&rl, "not sending bad error code %d to controller", | |
1844 | error); | |
1845 | return; | |
1846 | } | |
1847 | ||
1848 | COVERAGE_INC(ofproto_error); | |
1849 | oem = make_openflow_xid(len + sizeof *oem, OFPT_ERROR, | |
1850 | oh ? oh->xid : 0, &buf); | |
1851 | oem->type = htons((unsigned int) error >> 16); | |
1852 | oem->code = htons(error & 0xffff); | |
1853 | memcpy(oem->data, data, len); | |
1854 | queue_tx(buf, ofconn, ofconn->reply_counter); | |
1855 | } | |
1856 | ||
1857 | static void | |
1858 | send_error_oh(const struct ofconn *ofconn, const struct ofp_header *oh, | |
1859 | int error) | |
1860 | { | |
1861 | size_t oh_length = ntohs(oh->length); | |
1862 | send_error(ofconn, oh, error, oh, MIN(oh_length, 64)); | |
1863 | } | |
1864 | ||
1865 | static void | |
1866 | hton_ofp_phy_port(struct ofp_phy_port *opp) | |
1867 | { | |
1868 | opp->port_no = htons(opp->port_no); | |
1869 | opp->config = htonl(opp->config); | |
1870 | opp->state = htonl(opp->state); | |
1871 | opp->curr = htonl(opp->curr); | |
1872 | opp->advertised = htonl(opp->advertised); | |
1873 | opp->supported = htonl(opp->supported); | |
1874 | opp->peer = htonl(opp->peer); | |
1875 | } | |
1876 | ||
1877 | static int | |
1878 | handle_echo_request(struct ofconn *ofconn, struct ofp_header *oh) | |
1879 | { | |
1880 | struct ofp_header *rq = oh; | |
1881 | queue_tx(make_echo_reply(rq), ofconn, ofconn->reply_counter); | |
1882 | return 0; | |
1883 | } | |
1884 | ||
1885 | static int | |
1886 | handle_features_request(struct ofproto *p, struct ofconn *ofconn, | |
1887 | struct ofp_header *oh) | |
1888 | { | |
1889 | struct ofp_switch_features *osf; | |
1890 | struct ofpbuf *buf; | |
1891 | unsigned int port_no; | |
1892 | struct ofport *port; | |
1893 | ||
1894 | osf = make_openflow_xid(sizeof *osf, OFPT_FEATURES_REPLY, oh->xid, &buf); | |
1895 | osf->datapath_id = htonll(p->datapath_id); | |
1896 | osf->n_buffers = htonl(pktbuf_capacity()); | |
1897 | osf->n_tables = 2; | |
1898 | osf->capabilities = htonl(OFPC_FLOW_STATS | OFPC_TABLE_STATS | | |
0254ae23 | 1899 | OFPC_PORT_STATS | OFPC_ARP_MATCH_IP); |
064af421 BP |
1900 | osf->actions = htonl((1u << OFPAT_OUTPUT) | |
1901 | (1u << OFPAT_SET_VLAN_VID) | | |
1902 | (1u << OFPAT_SET_VLAN_PCP) | | |
1903 | (1u << OFPAT_STRIP_VLAN) | | |
1904 | (1u << OFPAT_SET_DL_SRC) | | |
1905 | (1u << OFPAT_SET_DL_DST) | | |
1906 | (1u << OFPAT_SET_NW_SRC) | | |
1907 | (1u << OFPAT_SET_NW_DST) | | |
959a2ecd | 1908 | (1u << OFPAT_SET_NW_TOS) | |
064af421 BP |
1909 | (1u << OFPAT_SET_TP_SRC) | |
1910 | (1u << OFPAT_SET_TP_DST)); | |
1911 | ||
1912 | PORT_ARRAY_FOR_EACH (port, &p->ports, port_no) { | |
1913 | hton_ofp_phy_port(ofpbuf_put(buf, &port->opp, sizeof port->opp)); | |
1914 | } | |
1915 | ||
1916 | queue_tx(buf, ofconn, ofconn->reply_counter); | |
1917 | return 0; | |
1918 | } | |
1919 | ||
1920 | static int | |
1921 | handle_get_config_request(struct ofproto *p, struct ofconn *ofconn, | |
1922 | struct ofp_header *oh) | |
1923 | { | |
1924 | struct ofpbuf *buf; | |
1925 | struct ofp_switch_config *osc; | |
1926 | uint16_t flags; | |
1927 | bool drop_frags; | |
1928 | ||
1929 | /* Figure out flags. */ | |
c228a364 | 1930 | dpif_get_drop_frags(p->dpif, &drop_frags); |
064af421 | 1931 | flags = drop_frags ? OFPC_FRAG_DROP : OFPC_FRAG_NORMAL; |
064af421 BP |
1932 | |
1933 | /* Send reply. */ | |
1934 | osc = make_openflow_xid(sizeof *osc, OFPT_GET_CONFIG_REPLY, oh->xid, &buf); | |
1935 | osc->flags = htons(flags); | |
1936 | osc->miss_send_len = htons(ofconn->miss_send_len); | |
1937 | queue_tx(buf, ofconn, ofconn->reply_counter); | |
1938 | ||
1939 | return 0; | |
1940 | } | |
1941 | ||
1942 | static int | |
1943 | handle_set_config(struct ofproto *p, struct ofconn *ofconn, | |
1944 | struct ofp_switch_config *osc) | |
1945 | { | |
1946 | uint16_t flags; | |
1947 | int error; | |
1948 | ||
1949 | error = check_ofp_message(&osc->header, OFPT_SET_CONFIG, sizeof *osc); | |
1950 | if (error) { | |
1951 | return error; | |
1952 | } | |
1953 | flags = ntohs(osc->flags); | |
1954 | ||
064af421 BP |
1955 | if (ofconn == p->controller) { |
1956 | switch (flags & OFPC_FRAG_MASK) { | |
1957 | case OFPC_FRAG_NORMAL: | |
c228a364 | 1958 | dpif_set_drop_frags(p->dpif, false); |
064af421 BP |
1959 | break; |
1960 | case OFPC_FRAG_DROP: | |
c228a364 | 1961 | dpif_set_drop_frags(p->dpif, true); |
064af421 BP |
1962 | break; |
1963 | default: | |
1964 | VLOG_WARN_RL(&rl, "requested bad fragment mode (flags=%"PRIx16")", | |
1965 | osc->flags); | |
1966 | break; | |
1967 | } | |
1968 | } | |
1969 | ||
1970 | if ((ntohs(osc->miss_send_len) != 0) != (ofconn->miss_send_len != 0)) { | |
1971 | if (ntohs(osc->miss_send_len) != 0) { | |
1972 | ofconn->pktbuf = pktbuf_create(); | |
1973 | } else { | |
1974 | pktbuf_destroy(ofconn->pktbuf); | |
1975 | } | |
1976 | } | |
1977 | ||
1978 | ofconn->miss_send_len = ntohs(osc->miss_send_len); | |
1979 | ||
1980 | return 0; | |
1981 | } | |
1982 | ||
1983 | static void | |
6a07af36 JG |
1984 | add_output_group_action(struct odp_actions *actions, uint16_t group, |
1985 | uint16_t *nf_output_iface) | |
064af421 BP |
1986 | { |
1987 | odp_actions_add(actions, ODPAT_OUTPUT_GROUP)->output_group.group = group; | |
6a07af36 JG |
1988 | |
1989 | if (group == DP_GROUP_ALL || group == DP_GROUP_FLOOD) { | |
1990 | *nf_output_iface = NF_OUT_FLOOD; | |
1991 | } | |
064af421 BP |
1992 | } |
1993 | ||
1994 | static void | |
1995 | add_controller_action(struct odp_actions *actions, | |
1996 | const struct ofp_action_output *oao) | |
1997 | { | |
1998 | union odp_action *a = odp_actions_add(actions, ODPAT_CONTROLLER); | |
1999 | a->controller.arg = oao->max_len ? ntohs(oao->max_len) : UINT32_MAX; | |
2000 | } | |
2001 | ||
2002 | struct action_xlate_ctx { | |
2003 | /* Input. */ | |
e18fe8a2 | 2004 | flow_t flow; /* Flow to which these actions correspond. */ |
064af421 BP |
2005 | int recurse; /* Recursion level, via xlate_table_action. */ |
2006 | struct ofproto *ofproto; | |
2007 | const struct ofpbuf *packet; /* The packet corresponding to 'flow', or a | |
2008 | * null pointer if we are revalidating | |
2009 | * without a packet to refer to. */ | |
2010 | ||
2011 | /* Output. */ | |
2012 | struct odp_actions *out; /* Datapath actions. */ | |
2013 | tag_type *tags; /* Tags associated with OFPP_NORMAL actions. */ | |
d6fbec6d | 2014 | bool may_set_up_flow; /* True ordinarily; false if the actions must |
064af421 | 2015 | * be reassessed for every packet. */ |
6a07af36 | 2016 | uint16_t nf_output_iface; /* Output interface index for NetFlow. */ |
064af421 BP |
2017 | }; |
2018 | ||
2019 | static void do_xlate_actions(const union ofp_action *in, size_t n_in, | |
2020 | struct action_xlate_ctx *ctx); | |
2021 | ||
2022 | static void | |
2023 | add_output_action(struct action_xlate_ctx *ctx, uint16_t port) | |
2024 | { | |
2025 | const struct ofport *ofport = port_array_get(&ctx->ofproto->ports, port); | |
6cfaf517 BP |
2026 | |
2027 | if (ofport) { | |
2028 | if (ofport->opp.config & OFPPC_NO_FWD) { | |
2029 | /* Forwarding disabled on port. */ | |
2030 | return; | |
2031 | } | |
2032 | } else { | |
2033 | /* | |
2034 | * We don't have an ofport record for this port, but it doesn't hurt to | |
2035 | * allow forwarding to it anyhow. Maybe such a port will appear later | |
2036 | * and we're pre-populating the flow table. | |
2037 | */ | |
064af421 | 2038 | } |
6cfaf517 BP |
2039 | |
2040 | odp_actions_add(ctx->out, ODPAT_OUTPUT)->output.port = port; | |
6a07af36 | 2041 | ctx->nf_output_iface = port; |
064af421 BP |
2042 | } |
2043 | ||
2044 | static struct rule * | |
2045 | lookup_valid_rule(struct ofproto *ofproto, const flow_t *flow) | |
2046 | { | |
2047 | struct rule *rule; | |
2048 | rule = rule_from_cls_rule(classifier_lookup(&ofproto->cls, flow)); | |
2049 | ||
2050 | /* The rule we found might not be valid, since we could be in need of | |
2051 | * revalidation. If it is not valid, don't return it. */ | |
2052 | if (rule | |
2053 | && rule->super | |
2054 | && ofproto->need_revalidate | |
2055 | && !revalidate_rule(ofproto, rule)) { | |
2056 | COVERAGE_INC(ofproto_invalidated); | |
2057 | return NULL; | |
2058 | } | |
2059 | ||
2060 | return rule; | |
2061 | } | |
2062 | ||
2063 | static void | |
2064 | xlate_table_action(struct action_xlate_ctx *ctx, uint16_t in_port) | |
2065 | { | |
2066 | if (!ctx->recurse) { | |
2c5d1389 | 2067 | uint16_t old_in_port; |
064af421 | 2068 | struct rule *rule; |
064af421 | 2069 | |
2c5d1389 BP |
2070 | /* Look up a flow with 'in_port' as the input port. Then restore the |
2071 | * original input port (otherwise OFPP_NORMAL and OFPP_IN_PORT will | |
2072 | * have surprising behavior). */ | |
2073 | old_in_port = ctx->flow.in_port; | |
e18fe8a2 BP |
2074 | ctx->flow.in_port = in_port; |
2075 | rule = lookup_valid_rule(ctx->ofproto, &ctx->flow); | |
2c5d1389 BP |
2076 | ctx->flow.in_port = old_in_port; |
2077 | ||
064af421 BP |
2078 | if (rule) { |
2079 | if (rule->super) { | |
2080 | rule = rule->super; | |
2081 | } | |
2082 | ||
2083 | ctx->recurse++; | |
2084 | do_xlate_actions(rule->actions, rule->n_actions, ctx); | |
2085 | ctx->recurse--; | |
2086 | } | |
2087 | } | |
2088 | } | |
2089 | ||
2090 | static void | |
2091 | xlate_output_action(struct action_xlate_ctx *ctx, | |
2092 | const struct ofp_action_output *oao) | |
2093 | { | |
2094 | uint16_t odp_port; | |
6a07af36 JG |
2095 | uint16_t prev_nf_output_iface = ctx->nf_output_iface; |
2096 | ||
2097 | ctx->nf_output_iface = NF_OUT_DROP; | |
064af421 BP |
2098 | |
2099 | switch (ntohs(oao->port)) { | |
2100 | case OFPP_IN_PORT: | |
e18fe8a2 | 2101 | add_output_action(ctx, ctx->flow.in_port); |
064af421 BP |
2102 | break; |
2103 | case OFPP_TABLE: | |
e18fe8a2 | 2104 | xlate_table_action(ctx, ctx->flow.in_port); |
064af421 BP |
2105 | break; |
2106 | case OFPP_NORMAL: | |
e18fe8a2 | 2107 | if (!ctx->ofproto->ofhooks->normal_cb(&ctx->flow, ctx->packet, |
064af421 | 2108 | ctx->out, ctx->tags, |
6a07af36 | 2109 | &ctx->nf_output_iface, |
064af421 BP |
2110 | ctx->ofproto->aux)) { |
2111 | COVERAGE_INC(ofproto_uninstallable); | |
d6fbec6d | 2112 | ctx->may_set_up_flow = false; |
064af421 BP |
2113 | } |
2114 | break; | |
2115 | case OFPP_FLOOD: | |
6a07af36 JG |
2116 | add_output_group_action(ctx->out, DP_GROUP_FLOOD, |
2117 | &ctx->nf_output_iface); | |
064af421 BP |
2118 | break; |
2119 | case OFPP_ALL: | |
6a07af36 | 2120 | add_output_group_action(ctx->out, DP_GROUP_ALL, &ctx->nf_output_iface); |
064af421 BP |
2121 | break; |
2122 | case OFPP_CONTROLLER: | |
2123 | add_controller_action(ctx->out, oao); | |
2124 | break; | |
2125 | case OFPP_LOCAL: | |
2126 | add_output_action(ctx, ODPP_LOCAL); | |
2127 | break; | |
2128 | default: | |
2129 | odp_port = ofp_port_to_odp_port(ntohs(oao->port)); | |
e18fe8a2 | 2130 | if (odp_port != ctx->flow.in_port) { |
064af421 BP |
2131 | add_output_action(ctx, odp_port); |
2132 | } | |
2133 | break; | |
2134 | } | |
6a07af36 JG |
2135 | |
2136 | if (prev_nf_output_iface == NF_OUT_FLOOD) { | |
2137 | ctx->nf_output_iface = NF_OUT_FLOOD; | |
2138 | } else if (ctx->nf_output_iface == NF_OUT_DROP) { | |
2139 | ctx->nf_output_iface = prev_nf_output_iface; | |
2140 | } else if (prev_nf_output_iface != NF_OUT_DROP && | |
2141 | ctx->nf_output_iface != NF_OUT_FLOOD) { | |
2142 | ctx->nf_output_iface = NF_OUT_MULTI; | |
2143 | } | |
064af421 BP |
2144 | } |
2145 | ||
2146 | static void | |
2147 | xlate_nicira_action(struct action_xlate_ctx *ctx, | |
2148 | const struct nx_action_header *nah) | |
2149 | { | |
2150 | const struct nx_action_resubmit *nar; | |
659586ef JG |
2151 | const struct nx_action_set_tunnel *nast; |
2152 | union odp_action *oa; | |
064af421 BP |
2153 | int subtype = ntohs(nah->subtype); |
2154 | ||
2155 | assert(nah->vendor == htonl(NX_VENDOR_ID)); | |
2156 | switch (subtype) { | |
2157 | case NXAST_RESUBMIT: | |
2158 | nar = (const struct nx_action_resubmit *) nah; | |
2159 | xlate_table_action(ctx, ofp_port_to_odp_port(ntohs(nar->in_port))); | |
2160 | break; | |
2161 | ||
659586ef JG |
2162 | case NXAST_SET_TUNNEL: |
2163 | nast = (const struct nx_action_set_tunnel *) nah; | |
2164 | oa = odp_actions_add(ctx->out, ODPAT_SET_TUNNEL); | |
2165 | ctx->flow.tun_id = oa->tunnel.tun_id = nast->tun_id; | |
2166 | break; | |
2167 | ||
999f0d45 BP |
2168 | /* If you add a new action here that modifies flow data, don't forget to |
2169 | * update the flow key in ctx->flow in the same key. */ | |
2170 | ||
064af421 BP |
2171 | default: |
2172 | VLOG_DBG_RL(&rl, "unknown Nicira action type %"PRIu16, subtype); | |
2173 | break; | |
2174 | } | |
2175 | } | |
2176 | ||
2177 | static void | |
2178 | do_xlate_actions(const union ofp_action *in, size_t n_in, | |
2179 | struct action_xlate_ctx *ctx) | |
2180 | { | |
2181 | struct actions_iterator iter; | |
2182 | const union ofp_action *ia; | |
2183 | const struct ofport *port; | |
2184 | ||
e18fe8a2 | 2185 | port = port_array_get(&ctx->ofproto->ports, ctx->flow.in_port); |
064af421 | 2186 | if (port && port->opp.config & (OFPPC_NO_RECV | OFPPC_NO_RECV_STP) && |
e18fe8a2 | 2187 | port->opp.config & (eth_addr_equals(ctx->flow.dl_dst, stp_eth_addr) |
064af421 BP |
2188 | ? OFPPC_NO_RECV_STP : OFPPC_NO_RECV)) { |
2189 | /* Drop this flow. */ | |
2190 | return; | |
2191 | } | |
2192 | ||
2193 | for (ia = actions_first(&iter, in, n_in); ia; ia = actions_next(&iter)) { | |
2194 | uint16_t type = ntohs(ia->type); | |
2195 | union odp_action *oa; | |
2196 | ||
2197 | switch (type) { | |
2198 | case OFPAT_OUTPUT: | |
2199 | xlate_output_action(ctx, &ia->output); | |
2200 | break; | |
2201 | ||
2202 | case OFPAT_SET_VLAN_VID: | |
2203 | oa = odp_actions_add(ctx->out, ODPAT_SET_VLAN_VID); | |
999f0d45 | 2204 | ctx->flow.dl_vlan = oa->vlan_vid.vlan_vid = ia->vlan_vid.vlan_vid; |
064af421 BP |
2205 | break; |
2206 | ||
2207 | case OFPAT_SET_VLAN_PCP: | |
2208 | oa = odp_actions_add(ctx->out, ODPAT_SET_VLAN_PCP); | |
999f0d45 | 2209 | ctx->flow.dl_vlan_pcp = oa->vlan_pcp.vlan_pcp = ia->vlan_pcp.vlan_pcp; |
064af421 BP |
2210 | break; |
2211 | ||
2212 | case OFPAT_STRIP_VLAN: | |
2213 | odp_actions_add(ctx->out, ODPAT_STRIP_VLAN); | |
999f0d45 BP |
2214 | ctx->flow.dl_vlan = OFP_VLAN_NONE; |
2215 | ctx->flow.dl_vlan_pcp = 0; | |
064af421 BP |
2216 | break; |
2217 | ||
2218 | case OFPAT_SET_DL_SRC: | |
2219 | oa = odp_actions_add(ctx->out, ODPAT_SET_DL_SRC); | |
2220 | memcpy(oa->dl_addr.dl_addr, | |
2221 | ((struct ofp_action_dl_addr *) ia)->dl_addr, ETH_ADDR_LEN); | |
999f0d45 BP |
2222 | memcpy(ctx->flow.dl_src, |
2223 | ((struct ofp_action_dl_addr *) ia)->dl_addr, ETH_ADDR_LEN); | |
064af421 BP |
2224 | break; |
2225 | ||
2226 | case OFPAT_SET_DL_DST: | |
2227 | oa = odp_actions_add(ctx->out, ODPAT_SET_DL_DST); | |
2228 | memcpy(oa->dl_addr.dl_addr, | |
2229 | ((struct ofp_action_dl_addr *) ia)->dl_addr, ETH_ADDR_LEN); | |
999f0d45 BP |
2230 | memcpy(ctx->flow.dl_dst, |
2231 | ((struct ofp_action_dl_addr *) ia)->dl_addr, ETH_ADDR_LEN); | |
064af421 BP |
2232 | break; |
2233 | ||
2234 | case OFPAT_SET_NW_SRC: | |
2235 | oa = odp_actions_add(ctx->out, ODPAT_SET_NW_SRC); | |
999f0d45 | 2236 | ctx->flow.nw_src = oa->nw_addr.nw_addr = ia->nw_addr.nw_addr; |
064af421 BP |
2237 | break; |
2238 | ||
2d70a31a JP |
2239 | case OFPAT_SET_NW_DST: |
2240 | oa = odp_actions_add(ctx->out, ODPAT_SET_NW_DST); | |
999f0d45 | 2241 | ctx->flow.nw_dst = oa->nw_addr.nw_addr = ia->nw_addr.nw_addr; |
2d38e234 | 2242 | break; |
959a2ecd JP |
2243 | |
2244 | case OFPAT_SET_NW_TOS: | |
2245 | oa = odp_actions_add(ctx->out, ODPAT_SET_NW_TOS); | |
999f0d45 | 2246 | ctx->flow.nw_tos = oa->nw_tos.nw_tos = ia->nw_tos.nw_tos; |
2d70a31a JP |
2247 | break; |
2248 | ||
064af421 BP |
2249 | case OFPAT_SET_TP_SRC: |
2250 | oa = odp_actions_add(ctx->out, ODPAT_SET_TP_SRC); | |
999f0d45 | 2251 | ctx->flow.tp_src = oa->tp_port.tp_port = ia->tp_port.tp_port; |
064af421 BP |
2252 | break; |
2253 | ||
2d70a31a JP |
2254 | case OFPAT_SET_TP_DST: |
2255 | oa = odp_actions_add(ctx->out, ODPAT_SET_TP_DST); | |
999f0d45 | 2256 | ctx->flow.tp_dst = oa->tp_port.tp_port = ia->tp_port.tp_port; |
2d70a31a JP |
2257 | break; |
2258 | ||
064af421 BP |
2259 | case OFPAT_VENDOR: |
2260 | xlate_nicira_action(ctx, (const struct nx_action_header *) ia); | |
2261 | break; | |
2262 | ||
2263 | default: | |
2264 | VLOG_DBG_RL(&rl, "unknown action type %"PRIu16, type); | |
2265 | break; | |
2266 | } | |
2267 | } | |
2268 | } | |
2269 | ||
2270 | static int | |
2271 | xlate_actions(const union ofp_action *in, size_t n_in, | |
2272 | const flow_t *flow, struct ofproto *ofproto, | |
2273 | const struct ofpbuf *packet, | |
6a07af36 JG |
2274 | struct odp_actions *out, tag_type *tags, bool *may_set_up_flow, |
2275 | uint16_t *nf_output_iface) | |
064af421 BP |
2276 | { |
2277 | tag_type no_tags = 0; | |
2278 | struct action_xlate_ctx ctx; | |
2279 | COVERAGE_INC(ofproto_ofp2odp); | |
2280 | odp_actions_init(out); | |
e18fe8a2 | 2281 | ctx.flow = *flow; |
064af421 BP |
2282 | ctx.recurse = 0; |
2283 | ctx.ofproto = ofproto; | |
2284 | ctx.packet = packet; | |
2285 | ctx.out = out; | |
2286 | ctx.tags = tags ? tags : &no_tags; | |
d6fbec6d | 2287 | ctx.may_set_up_flow = true; |
6a07af36 | 2288 | ctx.nf_output_iface = NF_OUT_DROP; |
064af421 | 2289 | do_xlate_actions(in, n_in, &ctx); |
0ad9b732 | 2290 | |
d6fbec6d | 2291 | /* Check with in-band control to see if we're allowed to set up this |
0ad9b732 JP |
2292 | * flow. */ |
2293 | if (!in_band_rule_check(ofproto->in_band, flow, out)) { | |
d6fbec6d | 2294 | ctx.may_set_up_flow = false; |
0ad9b732 JP |
2295 | } |
2296 | ||
d6fbec6d BP |
2297 | if (may_set_up_flow) { |
2298 | *may_set_up_flow = ctx.may_set_up_flow; | |
064af421 | 2299 | } |
6a07af36 JG |
2300 | if (nf_output_iface) { |
2301 | *nf_output_iface = ctx.nf_output_iface; | |
064af421 BP |
2302 | } |
2303 | if (odp_actions_overflow(out)) { | |
2304 | odp_actions_init(out); | |
2305 | return ofp_mkerr(OFPET_BAD_ACTION, OFPBAC_TOO_MANY); | |
2306 | } | |
2307 | return 0; | |
2308 | } | |
2309 | ||
2310 | static int | |
2311 | handle_packet_out(struct ofproto *p, struct ofconn *ofconn, | |
2312 | struct ofp_header *oh) | |
2313 | { | |
2314 | struct ofp_packet_out *opo; | |
2315 | struct ofpbuf payload, *buffer; | |
2316 | struct odp_actions actions; | |
2317 | int n_actions; | |
2318 | uint16_t in_port; | |
2319 | flow_t flow; | |
2320 | int error; | |
2321 | ||
2322 | error = check_ofp_packet_out(oh, &payload, &n_actions, p->max_ports); | |
2323 | if (error) { | |
2324 | return error; | |
2325 | } | |
2326 | opo = (struct ofp_packet_out *) oh; | |
2327 | ||
2328 | COVERAGE_INC(ofproto_packet_out); | |
2329 | if (opo->buffer_id != htonl(UINT32_MAX)) { | |
2330 | error = pktbuf_retrieve(ofconn->pktbuf, ntohl(opo->buffer_id), | |
2331 | &buffer, &in_port); | |
7778bd15 | 2332 | if (error || !buffer) { |
064af421 BP |
2333 | return error; |
2334 | } | |
2335 | payload = *buffer; | |
2336 | } else { | |
2337 | buffer = NULL; | |
2338 | } | |
2339 | ||
659586ef | 2340 | flow_extract(&payload, 0, ofp_port_to_odp_port(ntohs(opo->in_port)), &flow); |
064af421 | 2341 | error = xlate_actions((const union ofp_action *) opo->actions, n_actions, |
6a07af36 | 2342 | &flow, p, &payload, &actions, NULL, NULL, NULL); |
064af421 BP |
2343 | if (error) { |
2344 | return error; | |
2345 | } | |
2346 | ||
c228a364 | 2347 | dpif_execute(p->dpif, flow.in_port, actions.actions, actions.n_actions, |
064af421 BP |
2348 | &payload); |
2349 | ofpbuf_delete(buffer); | |
2350 | ||
2351 | return 0; | |
2352 | } | |
2353 | ||
2354 | static void | |
2355 | update_port_config(struct ofproto *p, struct ofport *port, | |
2356 | uint32_t config, uint32_t mask) | |
2357 | { | |
2358 | mask &= config ^ port->opp.config; | |
2359 | if (mask & OFPPC_PORT_DOWN) { | |
2360 | if (config & OFPPC_PORT_DOWN) { | |
2361 | netdev_turn_flags_off(port->netdev, NETDEV_UP, true); | |
2362 | } else { | |
2363 | netdev_turn_flags_on(port->netdev, NETDEV_UP, true); | |
2364 | } | |
2365 | } | |
2366 | #define REVALIDATE_BITS (OFPPC_NO_RECV | OFPPC_NO_RECV_STP | OFPPC_NO_FWD) | |
2367 | if (mask & REVALIDATE_BITS) { | |
2368 | COVERAGE_INC(ofproto_costly_flags); | |
2369 | port->opp.config ^= mask & REVALIDATE_BITS; | |
2370 | p->need_revalidate = true; | |
2371 | } | |
2372 | #undef REVALIDATE_BITS | |
2373 | if (mask & OFPPC_NO_FLOOD) { | |
2374 | port->opp.config ^= OFPPC_NO_FLOOD; | |
72b06300 | 2375 | refresh_port_groups(p); |
064af421 BP |
2376 | } |
2377 | if (mask & OFPPC_NO_PACKET_IN) { | |
2378 | port->opp.config ^= OFPPC_NO_PACKET_IN; | |
2379 | } | |
2380 | } | |
2381 | ||
2382 | static int | |
2383 | handle_port_mod(struct ofproto *p, struct ofp_header *oh) | |
2384 | { | |
2385 | const struct ofp_port_mod *opm; | |
2386 | struct ofport *port; | |
2387 | int error; | |
2388 | ||
2389 | error = check_ofp_message(oh, OFPT_PORT_MOD, sizeof *opm); | |
2390 | if (error) { | |
2391 | return error; | |
2392 | } | |
2393 | opm = (struct ofp_port_mod *) oh; | |
2394 | ||
2395 | port = port_array_get(&p->ports, | |
2396 | ofp_port_to_odp_port(ntohs(opm->port_no))); | |
2397 | if (!port) { | |
2398 | return ofp_mkerr(OFPET_PORT_MOD_FAILED, OFPPMFC_BAD_PORT); | |
2399 | } else if (memcmp(port->opp.hw_addr, opm->hw_addr, OFP_ETH_ALEN)) { | |
2400 | return ofp_mkerr(OFPET_PORT_MOD_FAILED, OFPPMFC_BAD_HW_ADDR); | |
2401 | } else { | |
2402 | update_port_config(p, port, ntohl(opm->config), ntohl(opm->mask)); | |
2403 | if (opm->advertise) { | |
2404 | netdev_set_advertisements(port->netdev, ntohl(opm->advertise)); | |
2405 | } | |
2406 | } | |
2407 | return 0; | |
2408 | } | |
2409 | ||
2410 | static struct ofpbuf * | |
2411 | make_stats_reply(uint32_t xid, uint16_t type, size_t body_len) | |
2412 | { | |
2413 | struct ofp_stats_reply *osr; | |
2414 | struct ofpbuf *msg; | |
2415 | ||
2416 | msg = ofpbuf_new(MIN(sizeof *osr + body_len, UINT16_MAX)); | |
2417 | osr = put_openflow_xid(sizeof *osr, OFPT_STATS_REPLY, xid, msg); | |
2418 | osr->type = type; | |
2419 | osr->flags = htons(0); | |
2420 | return msg; | |
2421 | } | |
2422 | ||
2423 | static struct ofpbuf * | |
2424 | start_stats_reply(const struct ofp_stats_request *request, size_t body_len) | |
2425 | { | |
2426 | return make_stats_reply(request->header.xid, request->type, body_len); | |
2427 | } | |
2428 | ||
2429 | static void * | |
2430 | append_stats_reply(size_t nbytes, struct ofconn *ofconn, struct ofpbuf **msgp) | |
2431 | { | |
2432 | struct ofpbuf *msg = *msgp; | |
2433 | assert(nbytes <= UINT16_MAX - sizeof(struct ofp_stats_reply)); | |
2434 | if (nbytes + msg->size > UINT16_MAX) { | |
2435 | struct ofp_stats_reply *reply = msg->data; | |
2436 | reply->flags = htons(OFPSF_REPLY_MORE); | |
2437 | *msgp = make_stats_reply(reply->header.xid, reply->type, nbytes); | |
2438 | queue_tx(msg, ofconn, ofconn->reply_counter); | |
2439 | } | |
2440 | return ofpbuf_put_uninit(*msgp, nbytes); | |
2441 | } | |
2442 | ||
2443 | static int | |
2444 | handle_desc_stats_request(struct ofproto *p, struct ofconn *ofconn, | |
2445 | struct ofp_stats_request *request) | |
2446 | { | |
2447 | struct ofp_desc_stats *ods; | |
2448 | struct ofpbuf *msg; | |
2449 | ||
2450 | msg = start_stats_reply(request, sizeof *ods); | |
2451 | ods = append_stats_reply(sizeof *ods, ofconn, &msg); | |
5a719c38 JP |
2452 | memset(ods, 0, sizeof *ods); |
2453 | ovs_strlcpy(ods->mfr_desc, p->mfr_desc, sizeof ods->mfr_desc); | |
2454 | ovs_strlcpy(ods->hw_desc, p->hw_desc, sizeof ods->hw_desc); | |
2455 | ovs_strlcpy(ods->sw_desc, p->sw_desc, sizeof ods->sw_desc); | |
2456 | ovs_strlcpy(ods->serial_num, p->serial_desc, sizeof ods->serial_num); | |
2457 | ovs_strlcpy(ods->dp_desc, p->dp_desc, sizeof ods->dp_desc); | |
064af421 BP |
2458 | queue_tx(msg, ofconn, ofconn->reply_counter); |
2459 | ||
2460 | return 0; | |
2461 | } | |
2462 | ||
2463 | static void | |
2464 | count_subrules(struct cls_rule *cls_rule, void *n_subrules_) | |
2465 | { | |
2466 | struct rule *rule = rule_from_cls_rule(cls_rule); | |
2467 | int *n_subrules = n_subrules_; | |
2468 | ||
2469 | if (rule->super) { | |
2470 | (*n_subrules)++; | |
2471 | } | |
2472 | } | |
2473 | ||
2474 | static int | |
2475 | handle_table_stats_request(struct ofproto *p, struct ofconn *ofconn, | |
2476 | struct ofp_stats_request *request) | |
2477 | { | |
2478 | struct ofp_table_stats *ots; | |
2479 | struct ofpbuf *msg; | |
2480 | struct odp_stats dpstats; | |
2481 | int n_exact, n_subrules, n_wild; | |
2482 | ||
2483 | msg = start_stats_reply(request, sizeof *ots * 2); | |
2484 | ||
2485 | /* Count rules of various kinds. */ | |
2486 | n_subrules = 0; | |
2487 | classifier_for_each(&p->cls, CLS_INC_EXACT, count_subrules, &n_subrules); | |
2488 | n_exact = classifier_count_exact(&p->cls) - n_subrules; | |
2489 | n_wild = classifier_count(&p->cls) - classifier_count_exact(&p->cls); | |
2490 | ||
2491 | /* Hash table. */ | |
c228a364 | 2492 | dpif_get_dp_stats(p->dpif, &dpstats); |
064af421 BP |
2493 | ots = append_stats_reply(sizeof *ots, ofconn, &msg); |
2494 | memset(ots, 0, sizeof *ots); | |
2495 | ots->table_id = TABLEID_HASH; | |
2496 | strcpy(ots->name, "hash"); | |
2497 | ots->wildcards = htonl(0); | |
2498 | ots->max_entries = htonl(dpstats.max_capacity); | |
2499 | ots->active_count = htonl(n_exact); | |
2500 | ots->lookup_count = htonll(dpstats.n_frags + dpstats.n_hit + | |
2501 | dpstats.n_missed); | |
2502 | ots->matched_count = htonll(dpstats.n_hit); /* XXX */ | |
2503 | ||
2504 | /* Classifier table. */ | |
2505 | ots = append_stats_reply(sizeof *ots, ofconn, &msg); | |
2506 | memset(ots, 0, sizeof *ots); | |
2507 | ots->table_id = TABLEID_CLASSIFIER; | |
2508 | strcpy(ots->name, "classifier"); | |
659586ef JG |
2509 | ots->wildcards = p->tun_id_from_cookie ? htonl(OVSFW_ALL) |
2510 | : htonl(OFPFW_ALL); | |
064af421 BP |
2511 | ots->max_entries = htonl(65536); |
2512 | ots->active_count = htonl(n_wild); | |
2513 | ots->lookup_count = htonll(0); /* XXX */ | |
2514 | ots->matched_count = htonll(0); /* XXX */ | |
2515 | ||
2516 | queue_tx(msg, ofconn, ofconn->reply_counter); | |
2517 | return 0; | |
2518 | } | |
2519 | ||
abaad8cf JP |
2520 | static void |
2521 | append_port_stat(struct ofport *port, uint16_t port_no, struct ofconn *ofconn, | |
2522 | struct ofpbuf *msg) | |
2523 | { | |
2524 | struct netdev_stats stats; | |
2525 | struct ofp_port_stats *ops; | |
2526 | ||
2527 | /* Intentionally ignore return value, since errors will set | |
2528 | * 'stats' to all-1s, which is correct for OpenFlow, and | |
2529 | * netdev_get_stats() will log errors. */ | |
2530 | netdev_get_stats(port->netdev, &stats); | |
2531 | ||
2532 | ops = append_stats_reply(sizeof *ops, ofconn, &msg); | |
2533 | ops->port_no = htons(odp_port_to_ofp_port(port_no)); | |
2534 | memset(ops->pad, 0, sizeof ops->pad); | |
2535 | ops->rx_packets = htonll(stats.rx_packets); | |
2536 | ops->tx_packets = htonll(stats.tx_packets); | |
2537 | ops->rx_bytes = htonll(stats.rx_bytes); | |
2538 | ops->tx_bytes = htonll(stats.tx_bytes); | |
2539 | ops->rx_dropped = htonll(stats.rx_dropped); | |
2540 | ops->tx_dropped = htonll(stats.tx_dropped); | |
2541 | ops->rx_errors = htonll(stats.rx_errors); | |
2542 | ops->tx_errors = htonll(stats.tx_errors); | |
2543 | ops->rx_frame_err = htonll(stats.rx_frame_errors); | |
2544 | ops->rx_over_err = htonll(stats.rx_over_errors); | |
2545 | ops->rx_crc_err = htonll(stats.rx_crc_errors); | |
2546 | ops->collisions = htonll(stats.collisions); | |
2547 | } | |
2548 | ||
064af421 BP |
2549 | static int |
2550 | handle_port_stats_request(struct ofproto *p, struct ofconn *ofconn, | |
abaad8cf JP |
2551 | struct ofp_stats_request *osr, |
2552 | size_t arg_size) | |
064af421 | 2553 | { |
abaad8cf | 2554 | struct ofp_port_stats_request *psr; |
064af421 BP |
2555 | struct ofp_port_stats *ops; |
2556 | struct ofpbuf *msg; | |
2557 | struct ofport *port; | |
2558 | unsigned int port_no; | |
2559 | ||
abaad8cf JP |
2560 | if (arg_size != sizeof *psr) { |
2561 | return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN); | |
2562 | } | |
2563 | psr = (struct ofp_port_stats_request *) osr->body; | |
2564 | ||
2565 | msg = start_stats_reply(osr, sizeof *ops * 16); | |
2566 | if (psr->port_no != htons(OFPP_NONE)) { | |
2567 | port = port_array_get(&p->ports, | |
2568 | ofp_port_to_odp_port(ntohs(psr->port_no))); | |
2569 | if (port) { | |
2570 | append_port_stat(port, ntohs(psr->port_no), ofconn, msg); | |
2571 | } | |
2572 | } else { | |
2573 | PORT_ARRAY_FOR_EACH (port, &p->ports, port_no) { | |
2574 | append_port_stat(port, port_no, ofconn, msg); | |
2575 | } | |
064af421 BP |
2576 | } |
2577 | ||
2578 | queue_tx(msg, ofconn, ofconn->reply_counter); | |
2579 | return 0; | |
2580 | } | |
2581 | ||
2582 | struct flow_stats_cbdata { | |
2583 | struct ofproto *ofproto; | |
2584 | struct ofconn *ofconn; | |
2585 | uint16_t out_port; | |
2586 | struct ofpbuf *msg; | |
2587 | }; | |
2588 | ||
01149cfd BP |
2589 | /* Obtains statistic counters for 'rule' within 'p' and stores them into |
2590 | * '*packet_countp' and '*byte_countp'. If 'rule' is a wildcarded rule, the | |
2591 | * returned statistic include statistics for all of 'rule''s subrules. */ | |
064af421 BP |
2592 | static void |
2593 | query_stats(struct ofproto *p, struct rule *rule, | |
2594 | uint64_t *packet_countp, uint64_t *byte_countp) | |
2595 | { | |
2596 | uint64_t packet_count, byte_count; | |
2597 | struct rule *subrule; | |
2598 | struct odp_flow *odp_flows; | |
2599 | size_t n_odp_flows; | |
2600 | ||
01149cfd BP |
2601 | /* Start from historical data for 'rule' itself that are no longer tracked |
2602 | * by the datapath. This counts, for example, subrules that have | |
2603 | * expired. */ | |
b3137fe8 JG |
2604 | packet_count = rule->packet_count; |
2605 | byte_count = rule->byte_count; | |
2606 | ||
01149cfd BP |
2607 | /* Prepare to ask the datapath for statistics on 'rule', or if it is |
2608 | * wildcarded then on all of its subrules. | |
2609 | * | |
2610 | * Also, add any statistics that are not tracked by the datapath for each | |
2611 | * subrule. This includes, for example, statistics for packets that were | |
2612 | * executed "by hand" by ofproto via dpif_execute() but must be accounted | |
2613 | * to a flow. */ | |
064af421 | 2614 | n_odp_flows = rule->cr.wc.wildcards ? list_size(&rule->list) : 1; |
ec6fde61 | 2615 | odp_flows = xzalloc(n_odp_flows * sizeof *odp_flows); |
064af421 BP |
2616 | if (rule->cr.wc.wildcards) { |
2617 | size_t i = 0; | |
2618 | LIST_FOR_EACH (subrule, struct rule, list, &rule->list) { | |
2619 | odp_flows[i++].key = subrule->cr.flow; | |
b3137fe8 JG |
2620 | packet_count += subrule->packet_count; |
2621 | byte_count += subrule->byte_count; | |
064af421 BP |
2622 | } |
2623 | } else { | |
2624 | odp_flows[0].key = rule->cr.flow; | |
2625 | } | |
2626 | ||
28998b22 | 2627 | /* Fetch up-to-date statistics from the datapath and add them in. */ |
c228a364 | 2628 | if (!dpif_flow_get_multiple(p->dpif, odp_flows, n_odp_flows)) { |
064af421 BP |
2629 | size_t i; |
2630 | for (i = 0; i < n_odp_flows; i++) { | |
2631 | struct odp_flow *odp_flow = &odp_flows[i]; | |
2632 | packet_count += odp_flow->stats.n_packets; | |
2633 | byte_count += odp_flow->stats.n_bytes; | |
2634 | } | |
2635 | } | |
2636 | free(odp_flows); | |
2637 | ||
01149cfd | 2638 | /* Return the stats to the caller. */ |
064af421 BP |
2639 | *packet_countp = packet_count; |
2640 | *byte_countp = byte_count; | |
2641 | } | |
2642 | ||
2643 | static void | |
2644 | flow_stats_cb(struct cls_rule *rule_, void *cbdata_) | |
2645 | { | |
2646 | struct rule *rule = rule_from_cls_rule(rule_); | |
2647 | struct flow_stats_cbdata *cbdata = cbdata_; | |
2648 | struct ofp_flow_stats *ofs; | |
2649 | uint64_t packet_count, byte_count; | |
2650 | size_t act_len, len; | |
26c3f94a JP |
2651 | long long int tdiff = time_msec() - rule->created; |
2652 | uint32_t sec = tdiff / 1000; | |
2653 | uint32_t msec = tdiff - (sec * 1000); | |
064af421 BP |
2654 | |
2655 | if (rule_is_hidden(rule) || !rule_has_out_port(rule, cbdata->out_port)) { | |
2656 | return; | |
2657 | } | |
2658 | ||
2659 | act_len = sizeof *rule->actions * rule->n_actions; | |
2660 | len = offsetof(struct ofp_flow_stats, actions) + act_len; | |
2661 | ||
2662 | query_stats(cbdata->ofproto, rule, &packet_count, &byte_count); | |
2663 | ||
2664 | ofs = append_stats_reply(len, cbdata->ofconn, &cbdata->msg); | |
2665 | ofs->length = htons(len); | |
2666 | ofs->table_id = rule->cr.wc.wildcards ? TABLEID_CLASSIFIER : TABLEID_HASH; | |
2667 | ofs->pad = 0; | |
659586ef JG |
2668 | flow_to_match(&rule->cr.flow, rule->cr.wc.wildcards, |
2669 | cbdata->ofproto->tun_id_from_cookie, &ofs->match); | |
26c3f94a JP |
2670 | ofs->duration_sec = htonl(sec); |
2671 | ofs->duration_nsec = htonl(msec * 1000000); | |
39997502 | 2672 | ofs->cookie = rule->flow_cookie; |
064af421 BP |
2673 | ofs->priority = htons(rule->cr.priority); |
2674 | ofs->idle_timeout = htons(rule->idle_timeout); | |
2675 | ofs->hard_timeout = htons(rule->hard_timeout); | |
39997502 | 2676 | memset(ofs->pad2, 0, sizeof ofs->pad2); |
064af421 BP |
2677 | ofs->packet_count = htonll(packet_count); |
2678 | ofs->byte_count = htonll(byte_count); | |
2679 | memcpy(ofs->actions, rule->actions, act_len); | |
2680 | } | |
2681 | ||
2682 | static int | |
2683 | table_id_to_include(uint8_t table_id) | |
2684 | { | |
2685 | return (table_id == TABLEID_HASH ? CLS_INC_EXACT | |
2686 | : table_id == TABLEID_CLASSIFIER ? CLS_INC_WILD | |
2687 | : table_id == 0xff ? CLS_INC_ALL | |
2688 | : 0); | |
2689 | } | |
2690 | ||
2691 | static int | |
2692 | handle_flow_stats_request(struct ofproto *p, struct ofconn *ofconn, | |
2693 | const struct ofp_stats_request *osr, | |
2694 | size_t arg_size) | |
2695 | { | |
2696 | struct ofp_flow_stats_request *fsr; | |
2697 | struct flow_stats_cbdata cbdata; | |
2698 | struct cls_rule target; | |
2699 | ||
2700 | if (arg_size != sizeof *fsr) { | |
49bdc010 | 2701 | return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN); |
064af421 BP |
2702 | } |
2703 | fsr = (struct ofp_flow_stats_request *) osr->body; | |
2704 | ||
2705 | COVERAGE_INC(ofproto_flows_req); | |
2706 | cbdata.ofproto = p; | |
2707 | cbdata.ofconn = ofconn; | |
2708 | cbdata.out_port = fsr->out_port; | |
2709 | cbdata.msg = start_stats_reply(osr, 1024); | |
659586ef | 2710 | cls_rule_from_match(&fsr->match, 0, false, 0, &target); |
064af421 BP |
2711 | classifier_for_each_match(&p->cls, &target, |
2712 | table_id_to_include(fsr->table_id), | |
2713 | flow_stats_cb, &cbdata); | |
2714 | queue_tx(cbdata.msg, ofconn, ofconn->reply_counter); | |
2715 | return 0; | |
2716 | } | |
2717 | ||
4f2cad2c JP |
2718 | struct flow_stats_ds_cbdata { |
2719 | struct ofproto *ofproto; | |
2720 | struct ds *results; | |
2721 | }; | |
2722 | ||
2723 | static void | |
2724 | flow_stats_ds_cb(struct cls_rule *rule_, void *cbdata_) | |
2725 | { | |
2726 | struct rule *rule = rule_from_cls_rule(rule_); | |
2727 | struct flow_stats_ds_cbdata *cbdata = cbdata_; | |
2728 | struct ds *results = cbdata->results; | |
2729 | struct ofp_match match; | |
2730 | uint64_t packet_count, byte_count; | |
2731 | size_t act_len = sizeof *rule->actions * rule->n_actions; | |
2732 | ||
2733 | /* Don't report on subrules. */ | |
2734 | if (rule->super != NULL) { | |
2735 | return; | |
2736 | } | |
2737 | ||
2738 | query_stats(cbdata->ofproto, rule, &packet_count, &byte_count); | |
659586ef JG |
2739 | flow_to_match(&rule->cr.flow, rule->cr.wc.wildcards, |
2740 | cbdata->ofproto->tun_id_from_cookie, &match); | |
4f2cad2c JP |
2741 | |
2742 | ds_put_format(results, "duration=%llds, ", | |
2743 | (time_msec() - rule->created) / 1000); | |
52ae00b3 | 2744 | ds_put_format(results, "priority=%u, ", rule->cr.priority); |
4f2cad2c JP |
2745 | ds_put_format(results, "n_packets=%"PRIu64", ", packet_count); |
2746 | ds_put_format(results, "n_bytes=%"PRIu64", ", byte_count); | |
2747 | ofp_print_match(results, &match, true); | |
2748 | ofp_print_actions(results, &rule->actions->header, act_len); | |
2749 | ds_put_cstr(results, "\n"); | |
2750 | } | |
2751 | ||
2752 | /* Adds a pretty-printed description of all flows to 'results', including | |
2753 | * those marked hidden by secchan (e.g., by in-band control). */ | |
2754 | void | |
2755 | ofproto_get_all_flows(struct ofproto *p, struct ds *results) | |
2756 | { | |
2757 | struct ofp_match match; | |
2758 | struct cls_rule target; | |
2759 | struct flow_stats_ds_cbdata cbdata; | |
2760 | ||
2761 | memset(&match, 0, sizeof match); | |
659586ef | 2762 | match.wildcards = htonl(OVSFW_ALL); |
4f2cad2c JP |
2763 | |
2764 | cbdata.ofproto = p; | |
2765 | cbdata.results = results; | |
2766 | ||
659586ef | 2767 | cls_rule_from_match(&match, 0, false, 0, &target); |
4f2cad2c JP |
2768 | classifier_for_each_match(&p->cls, &target, CLS_INC_ALL, |
2769 | flow_stats_ds_cb, &cbdata); | |
2770 | } | |
2771 | ||
064af421 BP |
2772 | struct aggregate_stats_cbdata { |
2773 | struct ofproto *ofproto; | |
2774 | uint16_t out_port; | |
2775 | uint64_t packet_count; | |
2776 | uint64_t byte_count; | |
2777 | uint32_t n_flows; | |
2778 | }; | |
2779 | ||
2780 | static void | |
2781 | aggregate_stats_cb(struct cls_rule *rule_, void *cbdata_) | |
2782 | { | |
2783 | struct rule *rule = rule_from_cls_rule(rule_); | |
2784 | struct aggregate_stats_cbdata *cbdata = cbdata_; | |
2785 | uint64_t packet_count, byte_count; | |
2786 | ||
2787 | if (rule_is_hidden(rule) || !rule_has_out_port(rule, cbdata->out_port)) { | |
2788 | return; | |
2789 | } | |
2790 | ||
2791 | query_stats(cbdata->ofproto, rule, &packet_count, &byte_count); | |
2792 | ||
2793 | cbdata->packet_count += packet_count; | |
2794 | cbdata->byte_count += byte_count; | |
2795 | cbdata->n_flows++; | |
2796 | } | |
2797 | ||
2798 | static int | |
2799 | handle_aggregate_stats_request(struct ofproto *p, struct ofconn *ofconn, | |
2800 | const struct ofp_stats_request *osr, | |
2801 | size_t arg_size) | |
2802 | { | |
2803 | struct ofp_aggregate_stats_request *asr; | |
2804 | struct ofp_aggregate_stats_reply *reply; | |
2805 | struct aggregate_stats_cbdata cbdata; | |
2806 | struct cls_rule target; | |
2807 | struct ofpbuf *msg; | |
2808 | ||
2809 | if (arg_size != sizeof *asr) { | |
49bdc010 | 2810 | return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN); |
064af421 BP |
2811 | } |
2812 | asr = (struct ofp_aggregate_stats_request *) osr->body; | |
2813 | ||
2814 | COVERAGE_INC(ofproto_agg_request); | |
2815 | cbdata.ofproto = p; | |
2816 | cbdata.out_port = asr->out_port; | |
2817 | cbdata.packet_count = 0; | |
2818 | cbdata.byte_count = 0; | |
2819 | cbdata.n_flows = 0; | |
659586ef | 2820 | cls_rule_from_match(&asr->match, 0, false, 0, &target); |
064af421 BP |
2821 | classifier_for_each_match(&p->cls, &target, |
2822 | table_id_to_include(asr->table_id), | |
2823 | aggregate_stats_cb, &cbdata); | |
2824 | ||
2825 | msg = start_stats_reply(osr, sizeof *reply); | |
2826 | reply = append_stats_reply(sizeof *reply, ofconn, &msg); | |
2827 | reply->flow_count = htonl(cbdata.n_flows); | |
2828 | reply->packet_count = htonll(cbdata.packet_count); | |
2829 | reply->byte_count = htonll(cbdata.byte_count); | |
2830 | queue_tx(msg, ofconn, ofconn->reply_counter); | |
2831 | return 0; | |
2832 | } | |
2833 | ||
2834 | static int | |
2835 | handle_stats_request(struct ofproto *p, struct ofconn *ofconn, | |
2836 | struct ofp_header *oh) | |
2837 | { | |
2838 | struct ofp_stats_request *osr; | |
2839 | size_t arg_size; | |
2840 | int error; | |
2841 | ||
2842 | error = check_ofp_message_array(oh, OFPT_STATS_REQUEST, sizeof *osr, | |
2843 | 1, &arg_size); | |
2844 | if (error) { | |
2845 | return error; | |
2846 | } | |
2847 | osr = (struct ofp_stats_request *) oh; | |
2848 | ||
2849 | switch (ntohs(osr->type)) { | |
2850 | case OFPST_DESC: | |
2851 | return handle_desc_stats_request(p, ofconn, osr); | |
2852 | ||
2853 | case OFPST_FLOW: | |
2854 | return handle_flow_stats_request(p, ofconn, osr, arg_size); | |
2855 | ||
2856 | case OFPST_AGGREGATE: | |
2857 | return handle_aggregate_stats_request(p, ofconn, osr, arg_size); | |
2858 | ||
2859 | case OFPST_TABLE: | |
2860 | return handle_table_stats_request(p, ofconn, osr); | |
2861 | ||
2862 | case OFPST_PORT: | |
abaad8cf | 2863 | return handle_port_stats_request(p, ofconn, osr, arg_size); |
064af421 BP |
2864 | |
2865 | case OFPST_VENDOR: | |
2866 | return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_VENDOR); | |
2867 | ||
2868 | default: | |
2869 | return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_STAT); | |
2870 | } | |
2871 | } | |
2872 | ||
2873 | static long long int | |
2874 | msec_from_nsec(uint64_t sec, uint32_t nsec) | |
2875 | { | |
2876 | return !sec ? 0 : sec * 1000 + nsec / 1000000; | |
2877 | } | |
2878 | ||
2879 | static void | |
0193b2af JG |
2880 | update_time(struct ofproto *ofproto, struct rule *rule, |
2881 | const struct odp_flow_stats *stats) | |
064af421 BP |
2882 | { |
2883 | long long int used = msec_from_nsec(stats->used_sec, stats->used_nsec); | |
2884 | if (used > rule->used) { | |
2885 | rule->used = used; | |
4836f9f2 JP |
2886 | if (rule->super && used > rule->super->used) { |
2887 | rule->super->used = used; | |
2888 | } | |
0193b2af | 2889 | netflow_flow_update_time(ofproto->netflow, &rule->nf_flow, used); |
064af421 BP |
2890 | } |
2891 | } | |
2892 | ||
2893 | static void | |
0193b2af JG |
2894 | update_stats(struct ofproto *ofproto, struct rule *rule, |
2895 | const struct odp_flow_stats *stats) | |
064af421 | 2896 | { |
064af421 | 2897 | if (stats->n_packets) { |
0193b2af JG |
2898 | update_time(ofproto, rule, stats); |
2899 | rule->packet_count += stats->n_packets; | |
2900 | rule->byte_count += stats->n_bytes; | |
2901 | netflow_flow_update_flags(&rule->nf_flow, stats->ip_tos, | |
2902 | stats->tcp_flags); | |
064af421 BP |
2903 | } |
2904 | } | |
2905 | ||
79eee1eb BP |
2906 | /* Implements OFPFC_ADD and the cases for OFPFC_MODIFY and OFPFC_MODIFY_STRICT |
2907 | * in which no matching flow already exists in the flow table. | |
2908 | * | |
2909 | * Adds the flow specified by 'ofm', which is followed by 'n_actions' | |
2910 | * ofp_actions, to 'p''s flow table. Returns 0 on success or an OpenFlow error | |
2911 | * code as encoded by ofp_mkerr() on failure. | |
2912 | * | |
2913 | * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id, | |
2914 | * if any. */ | |
064af421 BP |
2915 | static int |
2916 | add_flow(struct ofproto *p, struct ofconn *ofconn, | |
79eee1eb | 2917 | const struct ofp_flow_mod *ofm, size_t n_actions) |
064af421 BP |
2918 | { |
2919 | struct ofpbuf *packet; | |
2920 | struct rule *rule; | |
2921 | uint16_t in_port; | |
2922 | int error; | |
2923 | ||
49bdc010 JP |
2924 | if (ofm->flags & htons(OFPFF_CHECK_OVERLAP)) { |
2925 | flow_t flow; | |
2926 | uint32_t wildcards; | |
2927 | ||
659586ef JG |
2928 | flow_from_match(&ofm->match, p->tun_id_from_cookie, ofm->cookie, |
2929 | &flow, &wildcards); | |
49bdc010 JP |
2930 | if (classifier_rule_overlaps(&p->cls, &flow, wildcards, |
2931 | ntohs(ofm->priority))) { | |
2932 | return ofp_mkerr(OFPET_FLOW_MOD_FAILED, OFPFMFC_OVERLAP); | |
2933 | } | |
2934 | } | |
2935 | ||
0193b2af | 2936 | rule = rule_create(p, NULL, (const union ofp_action *) ofm->actions, |
064af421 | 2937 | n_actions, ntohs(ofm->idle_timeout), |
39997502 | 2938 | ntohs(ofm->hard_timeout), ofm->cookie, |
ca069229 | 2939 | ofm->flags & htons(OFPFF_SEND_FLOW_REM)); |
659586ef JG |
2940 | cls_rule_from_match(&ofm->match, ntohs(ofm->priority), |
2941 | p->tun_id_from_cookie, ofm->cookie, &rule->cr); | |
064af421 | 2942 | |
064af421 BP |
2943 | error = 0; |
2944 | if (ofm->buffer_id != htonl(UINT32_MAX)) { | |
2945 | error = pktbuf_retrieve(ofconn->pktbuf, ntohl(ofm->buffer_id), | |
2946 | &packet, &in_port); | |
212fe71c BP |
2947 | } else { |
2948 | packet = NULL; | |
165cd8a3 | 2949 | in_port = UINT16_MAX; |
064af421 BP |
2950 | } |
2951 | ||
2952 | rule_insert(p, rule, packet, in_port); | |
2953 | ofpbuf_delete(packet); | |
2954 | return error; | |
2955 | } | |
2956 | ||
79eee1eb BP |
2957 | static struct rule * |
2958 | find_flow_strict(struct ofproto *p, const struct ofp_flow_mod *ofm) | |
064af421 | 2959 | { |
064af421 BP |
2960 | uint32_t wildcards; |
2961 | flow_t flow; | |
2962 | ||
659586ef JG |
2963 | flow_from_match(&ofm->match, p->tun_id_from_cookie, ofm->cookie, |
2964 | &flow, &wildcards); | |
79eee1eb | 2965 | return rule_from_cls_rule(classifier_find_rule_exactly( |
064af421 BP |
2966 | &p->cls, &flow, wildcards, |
2967 | ntohs(ofm->priority))); | |
79eee1eb | 2968 | } |
064af421 | 2969 | |
79eee1eb BP |
2970 | static int |
2971 | send_buffered_packet(struct ofproto *ofproto, struct ofconn *ofconn, | |
2972 | struct rule *rule, const struct ofp_flow_mod *ofm) | |
2973 | { | |
2974 | struct ofpbuf *packet; | |
2975 | uint16_t in_port; | |
2976 | flow_t flow; | |
2977 | int error; | |
064af421 | 2978 | |
79eee1eb BP |
2979 | if (ofm->buffer_id == htonl(UINT32_MAX)) { |
2980 | return 0; | |
064af421 | 2981 | } |
79eee1eb BP |
2982 | |
2983 | error = pktbuf_retrieve(ofconn->pktbuf, ntohl(ofm->buffer_id), | |
2984 | &packet, &in_port); | |
2985 | if (error) { | |
2986 | return error; | |
2987 | } | |
2988 | ||
659586ef | 2989 | flow_extract(packet, 0, in_port, &flow); |
79eee1eb BP |
2990 | rule_execute(ofproto, rule, packet, &flow); |
2991 | ofpbuf_delete(packet); | |
2992 | ||
064af421 BP |
2993 | return 0; |
2994 | } | |
79eee1eb BP |
2995 | \f |
2996 | /* OFPFC_MODIFY and OFPFC_MODIFY_STRICT. */ | |
064af421 BP |
2997 | |
2998 | struct modify_flows_cbdata { | |
2999 | struct ofproto *ofproto; | |
3000 | const struct ofp_flow_mod *ofm; | |
064af421 | 3001 | size_t n_actions; |
79eee1eb | 3002 | struct rule *match; |
064af421 BP |
3003 | }; |
3004 | ||
79eee1eb BP |
3005 | static int modify_flow(struct ofproto *, const struct ofp_flow_mod *, |
3006 | size_t n_actions, struct rule *); | |
3007 | static void modify_flows_cb(struct cls_rule *, void *cbdata_); | |
3008 | ||
3009 | /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code as | |
3010 | * encoded by ofp_mkerr() on failure. | |
3011 | * | |
3012 | * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id, | |
3013 | * if any. */ | |
3014 | static int | |
3015 | modify_flows_loose(struct ofproto *p, struct ofconn *ofconn, | |
3016 | const struct ofp_flow_mod *ofm, size_t n_actions) | |
3017 | { | |
3018 | struct modify_flows_cbdata cbdata; | |
3019 | struct cls_rule target; | |
3020 | ||
3021 | cbdata.ofproto = p; | |
3022 | cbdata.ofm = ofm; | |
3023 | cbdata.n_actions = n_actions; | |
3024 | cbdata.match = NULL; | |
3025 | ||
659586ef JG |
3026 | cls_rule_from_match(&ofm->match, 0, p->tun_id_from_cookie, ofm->cookie, |
3027 | &target); | |
79eee1eb BP |
3028 | |
3029 | classifier_for_each_match(&p->cls, &target, CLS_INC_ALL, | |
3030 | modify_flows_cb, &cbdata); | |
3031 | if (cbdata.match) { | |
3032 | /* This credits the packet to whichever flow happened to happened to | |
3033 | * match last. That's weird. Maybe we should do a lookup for the | |
3034 | * flow that actually matches the packet? Who knows. */ | |
3035 | send_buffered_packet(p, ofconn, cbdata.match, ofm); | |
3036 | return 0; | |
3037 | } else { | |
3038 | return add_flow(p, ofconn, ofm, n_actions); | |
3039 | } | |
3040 | } | |
3041 | ||
3042 | /* Implements OFPFC_MODIFY_STRICT. Returns 0 on success or an OpenFlow error | |
3043 | * code as encoded by ofp_mkerr() on failure. | |
3044 | * | |
3045 | * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id, | |
3046 | * if any. */ | |
3047 | static int | |
3048 | modify_flow_strict(struct ofproto *p, struct ofconn *ofconn, | |
3049 | struct ofp_flow_mod *ofm, size_t n_actions) | |
3050 | { | |
3051 | struct rule *rule = find_flow_strict(p, ofm); | |
3052 | if (rule && !rule_is_hidden(rule)) { | |
3053 | modify_flow(p, ofm, n_actions, rule); | |
3054 | return send_buffered_packet(p, ofconn, rule, ofm); | |
3055 | } else { | |
3056 | return add_flow(p, ofconn, ofm, n_actions); | |
3057 | } | |
3058 | } | |
3059 | ||
3060 | /* Callback for modify_flows_loose(). */ | |
064af421 BP |
3061 | static void |
3062 | modify_flows_cb(struct cls_rule *rule_, void *cbdata_) | |
3063 | { | |
3064 | struct rule *rule = rule_from_cls_rule(rule_); | |
3065 | struct modify_flows_cbdata *cbdata = cbdata_; | |
3066 | ||
79eee1eb BP |
3067 | if (!rule_is_hidden(rule)) { |
3068 | cbdata->match = rule; | |
3069 | modify_flow(cbdata->ofproto, cbdata->ofm, cbdata->n_actions, rule); | |
064af421 | 3070 | } |
064af421 BP |
3071 | } |
3072 | ||
79eee1eb BP |
3073 | /* Implements core of OFPFC_MODIFY and OFPFC_MODIFY_STRICT where 'rule' has |
3074 | * been identified as a flow in 'p''s flow table to be modified, by changing | |
3075 | * the rule's actions to match those in 'ofm' (which is followed by 'n_actions' | |
3076 | * ofp_action[] structures). */ | |
064af421 | 3077 | static int |
79eee1eb BP |
3078 | modify_flow(struct ofproto *p, const struct ofp_flow_mod *ofm, |
3079 | size_t n_actions, struct rule *rule) | |
064af421 | 3080 | { |
79eee1eb BP |
3081 | size_t actions_len = n_actions * sizeof *rule->actions; |
3082 | ||
3083 | rule->flow_cookie = ofm->cookie; | |
3084 | ||
3085 | /* If the actions are the same, do nothing. */ | |
3086 | if (n_actions == rule->n_actions | |
3087 | && !memcmp(ofm->actions, rule->actions, actions_len)) | |
3088 | { | |
3089 | return 0; | |
3090 | } | |
3091 | ||
3092 | /* Replace actions. */ | |
3093 | free(rule->actions); | |
3094 | rule->actions = xmemdup(ofm->actions, actions_len); | |
3095 | rule->n_actions = n_actions; | |
3096 | ||
3097 | /* Make sure that the datapath gets updated properly. */ | |
3098 | if (rule->cr.wc.wildcards) { | |
3099 | COVERAGE_INC(ofproto_mod_wc_flow); | |
3100 | p->need_revalidate = true; | |
3101 | } else { | |
3102 | rule_update_actions(p, rule); | |
3103 | } | |
3104 | ||
3105 | return 0; | |
3106 | } | |
3107 | \f | |
3108 | /* OFPFC_DELETE implementation. */ | |
3109 | ||
3110 | struct delete_flows_cbdata { | |
3111 | struct ofproto *ofproto; | |
3112 | uint16_t out_port; | |
3113 | }; | |
3114 | ||
3115 | static void delete_flows_cb(struct cls_rule *, void *cbdata_); | |
3116 | static void delete_flow(struct ofproto *, struct rule *, uint16_t out_port); | |
3117 | ||
3118 | /* Implements OFPFC_DELETE. */ | |
3119 | static void | |
3120 | delete_flows_loose(struct ofproto *p, const struct ofp_flow_mod *ofm) | |
3121 | { | |
3122 | struct delete_flows_cbdata cbdata; | |
064af421 BP |
3123 | struct cls_rule target; |
3124 | ||
3125 | cbdata.ofproto = p; | |
79eee1eb | 3126 | cbdata.out_port = ofm->out_port; |
064af421 | 3127 | |
659586ef JG |
3128 | cls_rule_from_match(&ofm->match, 0, p->tun_id_from_cookie, ofm->cookie, |
3129 | &target); | |
064af421 BP |
3130 | |
3131 | classifier_for_each_match(&p->cls, &target, CLS_INC_ALL, | |
79eee1eb | 3132 | delete_flows_cb, &cbdata); |
064af421 BP |
3133 | } |
3134 | ||
79eee1eb BP |
3135 | /* Implements OFPFC_DELETE_STRICT. */ |
3136 | static void | |
3137 | delete_flow_strict(struct ofproto *p, struct ofp_flow_mod *ofm) | |
3138 | { | |
3139 | struct rule *rule = find_flow_strict(p, ofm); | |
3140 | if (rule) { | |
3141 | delete_flow(p, rule, ofm->out_port); | |
3142 | } | |
3143 | } | |
3144 | ||
3145 | /* Callback for delete_flows_loose(). */ | |
3146 | static void | |
3147 | delete_flows_cb(struct cls_rule *rule_, void *cbdata_) | |
3148 | { | |
3149 | struct rule *rule = rule_from_cls_rule(rule_); | |
3150 | struct delete_flows_cbdata *cbdata = cbdata_; | |
3151 | ||
3152 | delete_flow(cbdata->ofproto, rule, cbdata->out_port); | |
3153 | } | |
3154 | ||
3155 | /* Implements core of OFPFC_DELETE and OFPFC_DELETE_STRICT where 'rule' has | |
3156 | * been identified as a flow to delete from 'p''s flow table, by deleting the | |
3157 | * flow and sending out a OFPT_FLOW_REMOVED message to any interested | |
3158 | * controller. | |
3159 | * | |
3160 | * Will not delete 'rule' if it is hidden. Will delete 'rule' only if | |
3161 | * 'out_port' is htons(OFPP_NONE) or if 'rule' actually outputs to the | |
3162 | * specified 'out_port'. */ | |
3163 | static void | |
3164 | delete_flow(struct ofproto *p, struct rule *rule, uint16_t out_port) | |
3165 | { | |
3166 | if (rule_is_hidden(rule)) { | |
3167 | return; | |
3168 | } | |
3169 | ||
3170 | if (out_port != htons(OFPP_NONE) && !rule_has_out_port(rule, out_port)) { | |
3171 | return; | |
3172 | } | |
3173 | ||
3174 | send_flow_removed(p, rule, time_msec(), OFPRR_DELETE); | |
3175 | rule_remove(p, rule); | |
3176 | } | |
3177 | \f | |
064af421 BP |
3178 | static int |
3179 | handle_flow_mod(struct ofproto *p, struct ofconn *ofconn, | |
3180 | struct ofp_flow_mod *ofm) | |
3181 | { | |
3182 | size_t n_actions; | |
3183 | int error; | |
3184 | ||
3185 | error = check_ofp_message_array(&ofm->header, OFPT_FLOW_MOD, sizeof *ofm, | |
3186 | sizeof *ofm->actions, &n_actions); | |
3187 | if (error) { | |
3188 | return error; | |
3189 | } | |
3190 | ||
49bdc010 JP |
3191 | /* We do not support the emergency flow cache. It will hopefully |
3192 | * get dropped from OpenFlow in the near future. */ | |
3193 | if (ofm->flags & htons(OFPFF_EMERG)) { | |
3194 | /* There isn't a good fit for an error code, so just state that the | |
3195 | * flow table is full. */ | |
3196 | return ofp_mkerr(OFPET_FLOW_MOD_FAILED, OFPFMFC_ALL_TABLES_FULL); | |
3197 | } | |
3198 | ||
064af421 BP |
3199 | normalize_match(&ofm->match); |
3200 | if (!ofm->match.wildcards) { | |
3201 | ofm->priority = htons(UINT16_MAX); | |
3202 | } | |
3203 | ||
3204 | error = validate_actions((const union ofp_action *) ofm->actions, | |
3205 | n_actions, p->max_ports); | |
3206 | if (error) { | |
3207 | return error; | |
3208 | } | |
3209 | ||
3210 | switch (ntohs(ofm->command)) { | |
3211 | case OFPFC_ADD: | |
3212 | return add_flow(p, ofconn, ofm, n_actions); | |
3213 | ||
3214 | case OFPFC_MODIFY: | |
79eee1eb | 3215 | return modify_flows_loose(p, ofconn, ofm, n_actions); |
064af421 BP |
3216 | |
3217 | case OFPFC_MODIFY_STRICT: | |
79eee1eb | 3218 | return modify_flow_strict(p, ofconn, ofm, n_actions); |
064af421 BP |
3219 | |
3220 | case OFPFC_DELETE: | |
79eee1eb BP |
3221 | delete_flows_loose(p, ofm); |
3222 | return 0; | |
064af421 BP |
3223 | |
3224 | case OFPFC_DELETE_STRICT: | |
79eee1eb BP |
3225 | delete_flow_strict(p, ofm); |
3226 | return 0; | |
064af421 BP |
3227 | |
3228 | default: | |
3229 | return ofp_mkerr(OFPET_FLOW_MOD_FAILED, OFPFMFC_BAD_COMMAND); | |
3230 | } | |
3231 | } | |
3232 | ||
659586ef JG |
3233 | static int |
3234 | handle_tun_id_from_cookie(struct ofproto *p, struct nxt_tun_id_cookie *msg) | |
3235 | { | |
3236 | int error; | |
3237 | ||
3238 | error = check_ofp_message(&msg->header, OFPT_VENDOR, sizeof *msg); | |
3239 | if (error) { | |
3240 | return error; | |
3241 | } | |
3242 | ||
3243 | p->tun_id_from_cookie = !!msg->set; | |
3244 | return 0; | |
3245 | } | |
3246 | ||
064af421 BP |
3247 | static int |
3248 | handle_vendor(struct ofproto *p, struct ofconn *ofconn, void *msg) | |
3249 | { | |
3250 | struct ofp_vendor_header *ovh = msg; | |
3251 | struct nicira_header *nh; | |
3252 | ||
3253 | if (ntohs(ovh->header.length) < sizeof(struct ofp_vendor_header)) { | |
659586ef JG |
3254 | VLOG_WARN_RL(&rl, "received vendor message of length %zu " |
3255 | "(expected at least %zu)", | |
3256 | ntohs(ovh->header.length), sizeof(struct ofp_vendor_header)); | |
49bdc010 | 3257 | return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN); |
064af421 BP |
3258 | } |
3259 | if (ovh->vendor != htonl(NX_VENDOR_ID)) { | |
3260 | return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_VENDOR); | |
3261 | } | |
3262 | if (ntohs(ovh->header.length) < sizeof(struct nicira_header)) { | |
659586ef JG |
3263 | VLOG_WARN_RL(&rl, "received Nicira vendor message of length %zu " |
3264 | "(expected at least %zu)", | |
3265 | ntohs(ovh->header.length), sizeof(struct nicira_header)); | |
49bdc010 | 3266 | return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN); |
064af421 BP |
3267 | } |
3268 | ||
3269 | nh = msg; | |
3270 | switch (ntohl(nh->subtype)) { | |
3271 | case NXT_STATUS_REQUEST: | |
3272 | return switch_status_handle_request(p->switch_status, ofconn->rconn, | |
3273 | msg); | |
659586ef JG |
3274 | |
3275 | case NXT_TUN_ID_FROM_COOKIE: | |
3276 | return handle_tun_id_from_cookie(p, msg); | |
064af421 BP |
3277 | } |
3278 | ||
3279 | return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_SUBTYPE); | |
3280 | } | |
3281 | ||
246e61ea JP |
3282 | static int |
3283 | handle_barrier_request(struct ofconn *ofconn, struct ofp_header *oh) | |
3284 | { | |
3285 | struct ofp_header *ob; | |
3286 | struct ofpbuf *buf; | |
3287 | ||
3288 | /* Currently, everything executes synchronously, so we can just | |
3289 | * immediately send the barrier reply. */ | |
3290 | ob = make_openflow_xid(sizeof *ob, OFPT_BARRIER_REPLY, oh->xid, &buf); | |
3291 | queue_tx(buf, ofconn, ofconn->reply_counter); | |
3292 | return 0; | |
3293 | } | |
3294 | ||
064af421 BP |
3295 | static void |
3296 | handle_openflow(struct ofconn *ofconn, struct ofproto *p, | |
3297 | struct ofpbuf *ofp_msg) | |
3298 | { | |
3299 | struct ofp_header *oh = ofp_msg->data; | |
3300 | int error; | |
3301 | ||
3302 | COVERAGE_INC(ofproto_recv_openflow); | |
3303 | switch (oh->type) { | |
3304 | case OFPT_ECHO_REQUEST: | |
3305 | error = handle_echo_request(ofconn, oh); | |
3306 | break; | |
3307 | ||
3308 | case OFPT_ECHO_REPLY: | |
3309 | error = 0; | |
3310 | break; | |
3311 | ||
3312 | case OFPT_FEATURES_REQUEST: | |
3313 | error = handle_features_request(p, ofconn, oh); | |
3314 | break; | |
3315 | ||
3316 | case OFPT_GET_CONFIG_REQUEST: | |
3317 | error = handle_get_config_request(p, ofconn, oh); | |
3318 | break; | |
3319 | ||
3320 | case OFPT_SET_CONFIG: | |
3321 | error = handle_set_config(p, ofconn, ofp_msg->data); | |
3322 | break; | |
3323 | ||
3324 | case OFPT_PACKET_OUT: | |
3325 | error = handle_packet_out(p, ofconn, ofp_msg->data); | |
3326 | break; | |
3327 | ||
3328 | case OFPT_PORT_MOD: | |
3329 | error = handle_port_mod(p, oh); | |
3330 | break; | |
3331 | ||
3332 | case OFPT_FLOW_MOD: | |
3333 | error = handle_flow_mod(p, ofconn, ofp_msg->data); | |
3334 | break; | |
3335 | ||
3336 | case OFPT_STATS_REQUEST: | |
3337 | error = handle_stats_request(p, ofconn, oh); | |
3338 | break; | |
3339 | ||
3340 | case OFPT_VENDOR: | |
3341 | error = handle_vendor(p, ofconn, ofp_msg->data); | |
3342 | break; | |
3343 | ||
246e61ea JP |
3344 | case OFPT_BARRIER_REQUEST: |
3345 | error = handle_barrier_request(ofconn, oh); | |
3346 | break; | |
3347 | ||
064af421 BP |
3348 | default: |
3349 | if (VLOG_IS_WARN_ENABLED()) { | |
3350 | char *s = ofp_to_string(oh, ntohs(oh->length), 2); | |
3351 | VLOG_DBG_RL(&rl, "OpenFlow message ignored: %s", s); | |
3352 | free(s); | |
3353 | } | |
3354 | error = ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_TYPE); | |
3355 | break; | |
3356 | } | |
3357 | ||
3358 | if (error) { | |
3359 | send_error_oh(ofconn, ofp_msg->data, error); | |
3360 | } | |
3361 | } | |
3362 | \f | |
3363 | static void | |
72b06300 | 3364 | handle_odp_miss_msg(struct ofproto *p, struct ofpbuf *packet) |
064af421 BP |
3365 | { |
3366 | struct odp_msg *msg = packet->data; | |
3367 | uint16_t in_port = odp_port_to_ofp_port(msg->port); | |
3368 | struct rule *rule; | |
3369 | struct ofpbuf payload; | |
3370 | flow_t flow; | |
3371 | ||
064af421 BP |
3372 | payload.data = msg + 1; |
3373 | payload.size = msg->length - sizeof *msg; | |
659586ef | 3374 | flow_extract(&payload, msg->arg, msg->port, &flow); |
064af421 | 3375 | |
0ad9b732 JP |
3376 | /* Check with in-band control to see if this packet should be sent |
3377 | * to the local port regardless of the flow table. */ | |
3378 | if (in_band_msg_in_hook(p->in_band, &flow, &payload)) { | |
3379 | union odp_action action; | |
3380 | ||
3381 | memset(&action, 0, sizeof(action)); | |
3382 | action.output.type = ODPAT_OUTPUT; | |
3383 | action.output.port = ODPP_LOCAL; | |
f1acd62b | 3384 | dpif_execute(p->dpif, flow.in_port, &action, 1, &payload); |
0ad9b732 JP |
3385 | } |
3386 | ||
064af421 BP |
3387 | rule = lookup_valid_rule(p, &flow); |
3388 | if (!rule) { | |
3389 | /* Don't send a packet-in if OFPPC_NO_PACKET_IN asserted. */ | |
3390 | struct ofport *port = port_array_get(&p->ports, msg->port); | |
3391 | if (port) { | |
3392 | if (port->opp.config & OFPPC_NO_PACKET_IN) { | |
3393 | COVERAGE_INC(ofproto_no_packet_in); | |
3394 | /* XXX install 'drop' flow entry */ | |
3395 | ofpbuf_delete(packet); | |
3396 | return; | |
3397 | } | |
3398 | } else { | |
3399 | VLOG_WARN_RL(&rl, "packet-in on unknown port %"PRIu16, msg->port); | |
3400 | } | |
3401 | ||
3402 | COVERAGE_INC(ofproto_packet_in); | |
3403 | pinsched_send(p->miss_sched, in_port, packet, send_packet_in_miss, p); | |
3404 | return; | |
3405 | } | |
3406 | ||
3407 | if (rule->cr.wc.wildcards) { | |
3408 | rule = rule_create_subrule(p, rule, &flow); | |
3409 | rule_make_actions(p, rule, packet); | |
3410 | } else { | |
3411 | if (!rule->may_install) { | |
3412 | /* The rule is not installable, that is, we need to process every | |
3413 | * packet, so process the current packet and set its actions into | |
3414 | * 'subrule'. */ | |
3415 | rule_make_actions(p, rule, packet); | |
3416 | } else { | |
3417 | /* XXX revalidate rule if it needs it */ | |
3418 | } | |
3419 | } | |
3420 | ||
3421 | rule_execute(p, rule, &payload, &flow); | |
3422 | rule_reinstall(p, rule); | |
7778bd15 BP |
3423 | |
3424 | if (rule->super && rule->super->cr.priority == FAIL_OPEN_PRIORITY | |
3425 | && rconn_is_connected(p->controller->rconn)) { | |
3426 | /* | |
3427 | * Extra-special case for fail-open mode. | |
3428 | * | |
3429 | * We are in fail-open mode and the packet matched the fail-open rule, | |
3430 | * but we are connected to a controller too. We should send the packet | |
3431 | * up to the controller in the hope that it will try to set up a flow | |
3432 | * and thereby allow us to exit fail-open. | |
3433 | * | |
3434 | * See the top-level comment in fail-open.c for more information. | |
3435 | */ | |
3436 | pinsched_send(p->miss_sched, in_port, packet, send_packet_in_miss, p); | |
3437 | } else { | |
3438 | ofpbuf_delete(packet); | |
3439 | } | |
064af421 | 3440 | } |
72b06300 BP |
3441 | |
3442 | static void | |
3443 | handle_odp_msg(struct ofproto *p, struct ofpbuf *packet) | |
3444 | { | |
3445 | struct odp_msg *msg = packet->data; | |
3446 | ||
3447 | switch (msg->type) { | |
3448 | case _ODPL_ACTION_NR: | |
3449 | COVERAGE_INC(ofproto_ctlr_action); | |
3450 | pinsched_send(p->action_sched, odp_port_to_ofp_port(msg->port), packet, | |
3451 | send_packet_in_action, p); | |
3452 | break; | |
3453 | ||
3454 | case _ODPL_SFLOW_NR: | |
3455 | if (p->sflow) { | |
3456 | ofproto_sflow_received(p->sflow, msg); | |
3457 | } | |
3458 | ofpbuf_delete(packet); | |
3459 | break; | |
3460 | ||
3461 | case _ODPL_MISS_NR: | |
3462 | handle_odp_miss_msg(p, packet); | |
3463 | break; | |
3464 | ||
3465 | default: | |
3466 | VLOG_WARN_RL(&rl, "received ODP message of unexpected type %"PRIu32, | |
3467 | msg->type); | |
3468 | break; | |
3469 | } | |
3470 | } | |
064af421 BP |
3471 | \f |
3472 | static void | |
3473 | revalidate_cb(struct cls_rule *sub_, void *cbdata_) | |
3474 | { | |
3475 | struct rule *sub = rule_from_cls_rule(sub_); | |
3476 | struct revalidate_cbdata *cbdata = cbdata_; | |
3477 | ||
3478 | if (cbdata->revalidate_all | |
3479 | || (cbdata->revalidate_subrules && sub->super) | |
3480 | || (tag_set_intersects(&cbdata->revalidate_set, sub->tags))) { | |
3481 | revalidate_rule(cbdata->ofproto, sub); | |
3482 | } | |
3483 | } | |
3484 | ||
3485 | static bool | |
3486 | revalidate_rule(struct ofproto *p, struct rule *rule) | |
3487 | { | |
3488 | const flow_t *flow = &rule->cr.flow; | |
3489 | ||
3490 | COVERAGE_INC(ofproto_revalidate_rule); | |
3491 | if (rule->super) { | |
3492 | struct rule *super; | |
3493 | super = rule_from_cls_rule(classifier_lookup_wild(&p->cls, flow)); | |
3494 | if (!super) { | |
3495 | rule_remove(p, rule); | |
3496 | return false; | |
3497 | } else if (super != rule->super) { | |
3498 | COVERAGE_INC(ofproto_revalidate_moved); | |
3499 | list_remove(&rule->list); | |
3500 | list_push_back(&super->list, &rule->list); | |
3501 | rule->super = super; | |
3502 | rule->hard_timeout = super->hard_timeout; | |
3503 | rule->idle_timeout = super->idle_timeout; | |
3504 | rule->created = super->created; | |
3505 | rule->used = 0; | |
3506 | } | |
3507 | } | |
3508 | ||
3509 | rule_update_actions(p, rule); | |
3510 | return true; | |
3511 | } | |
3512 | ||
3513 | static struct ofpbuf * | |
659586ef JG |
3514 | compose_flow_removed(struct ofproto *p, const struct rule *rule, |
3515 | long long int now, uint8_t reason) | |
064af421 | 3516 | { |
ca069229 | 3517 | struct ofp_flow_removed *ofr; |
064af421 | 3518 | struct ofpbuf *buf; |
9ca76894 | 3519 | long long int tdiff = now - rule->created; |
26c3f94a JP |
3520 | uint32_t sec = tdiff / 1000; |
3521 | uint32_t msec = tdiff - (sec * 1000); | |
064af421 | 3522 | |
ca069229 | 3523 | ofr = make_openflow(sizeof *ofr, OFPT_FLOW_REMOVED, &buf); |
659586ef JG |
3524 | flow_to_match(&rule->cr.flow, rule->cr.wc.wildcards, p->tun_id_from_cookie, |
3525 | &ofr->match); | |
39997502 | 3526 | ofr->cookie = rule->flow_cookie; |
ca069229 JP |
3527 | ofr->priority = htons(rule->cr.priority); |
3528 | ofr->reason = reason; | |
26c3f94a JP |
3529 | ofr->duration_sec = htonl(sec); |
3530 | ofr->duration_nsec = htonl(msec * 1000000); | |
ca069229 JP |
3531 | ofr->idle_timeout = htons(rule->idle_timeout); |
3532 | ofr->packet_count = htonll(rule->packet_count); | |
3533 | ofr->byte_count = htonll(rule->byte_count); | |
064af421 BP |
3534 | |
3535 | return buf; | |
3536 | } | |
3537 | ||
3538 | static void | |
ca069229 JP |
3539 | uninstall_idle_flow(struct ofproto *ofproto, struct rule *rule) |
3540 | { | |
3541 | assert(rule->installed); | |
3542 | assert(!rule->cr.wc.wildcards); | |
3543 | ||
3544 | if (rule->super) { | |
3545 | rule_remove(ofproto, rule); | |
3546 | } else { | |
3547 | rule_uninstall(ofproto, rule); | |
3548 | } | |
3549 | } | |
3550 | static void | |
3551 | send_flow_removed(struct ofproto *p, struct rule *rule, | |
3552 | long long int now, uint8_t reason) | |
064af421 BP |
3553 | { |
3554 | struct ofconn *ofconn; | |
3555 | struct ofconn *prev; | |
b9b0ce61 | 3556 | struct ofpbuf *buf = NULL; |
064af421 BP |
3557 | |
3558 | /* We limit the maximum number of queued flow expirations it by accounting | |
3559 | * them under the counter for replies. That works because preventing | |
3560 | * OpenFlow requests from being processed also prevents new flows from | |
3561 | * being added (and expiring). (It also prevents processing OpenFlow | |
3562 | * requests that would not add new flows, so it is imperfect.) */ | |
3563 | ||
3564 | prev = NULL; | |
3565 | LIST_FOR_EACH (ofconn, struct ofconn, node, &p->all_conns) { | |
ca069229 | 3566 | if (rule->send_flow_removed && rconn_is_connected(ofconn->rconn)) { |
064af421 | 3567 | if (prev) { |
431d8ad2 | 3568 | queue_tx(ofpbuf_clone(buf), prev, prev->reply_counter); |
064af421 | 3569 | } else { |
659586ef | 3570 | buf = compose_flow_removed(p, rule, now, reason); |
064af421 BP |
3571 | } |
3572 | prev = ofconn; | |
3573 | } | |
3574 | } | |
3575 | if (prev) { | |
431d8ad2 | 3576 | queue_tx(buf, prev, prev->reply_counter); |
064af421 BP |
3577 | } |
3578 | } | |
3579 | ||
064af421 BP |
3580 | |
3581 | static void | |
3582 | expire_rule(struct cls_rule *cls_rule, void *p_) | |
3583 | { | |
3584 | struct ofproto *p = p_; | |
3585 | struct rule *rule = rule_from_cls_rule(cls_rule); | |
3586 | long long int hard_expire, idle_expire, expire, now; | |
3587 | ||
3588 | hard_expire = (rule->hard_timeout | |
3589 | ? rule->created + rule->hard_timeout * 1000 | |
3590 | : LLONG_MAX); | |
3591 | idle_expire = (rule->idle_timeout | |
3592 | && (rule->super || list_is_empty(&rule->list)) | |
3593 | ? rule->used + rule->idle_timeout * 1000 | |
3594 | : LLONG_MAX); | |
3595 | expire = MIN(hard_expire, idle_expire); | |
064af421 BP |
3596 | |
3597 | now = time_msec(); | |
3598 | if (now < expire) { | |
3599 | if (rule->installed && now >= rule->used + 5000) { | |
3600 | uninstall_idle_flow(p, rule); | |
0193b2af JG |
3601 | } else if (!rule->cr.wc.wildcards) { |
3602 | active_timeout(p, rule); | |
064af421 | 3603 | } |
0193b2af | 3604 | |
064af421 BP |
3605 | return; |
3606 | } | |
3607 | ||
3608 | COVERAGE_INC(ofproto_expired); | |
46d6f36f JG |
3609 | |
3610 | /* Update stats. This code will be a no-op if the rule expired | |
3611 | * due to an idle timeout. */ | |
064af421 | 3612 | if (rule->cr.wc.wildcards) { |
064af421 BP |
3613 | struct rule *subrule, *next; |
3614 | LIST_FOR_EACH_SAFE (subrule, next, struct rule, list, &rule->list) { | |
3615 | rule_remove(p, subrule); | |
3616 | } | |
46d6f36f JG |
3617 | } else { |
3618 | rule_uninstall(p, rule); | |
064af421 BP |
3619 | } |
3620 | ||
8fe1a59d | 3621 | if (!rule_is_hidden(rule)) { |
ca069229 JP |
3622 | send_flow_removed(p, rule, now, |
3623 | (now >= hard_expire | |
3624 | ? OFPRR_HARD_TIMEOUT : OFPRR_IDLE_TIMEOUT)); | |
8fe1a59d | 3625 | } |
064af421 BP |
3626 | rule_remove(p, rule); |
3627 | } | |
3628 | ||
0193b2af JG |
3629 | static void |
3630 | active_timeout(struct ofproto *ofproto, struct rule *rule) | |
3631 | { | |
3632 | if (ofproto->netflow && !is_controller_rule(rule) && | |
3633 | netflow_active_timeout_expired(ofproto->netflow, &rule->nf_flow)) { | |
3634 | struct ofexpired expired; | |
3635 | struct odp_flow odp_flow; | |
3636 | ||
3637 | /* Get updated flow stats. */ | |
3638 | memset(&odp_flow, 0, sizeof odp_flow); | |
094e1514 JG |
3639 | if (rule->installed) { |
3640 | odp_flow.key = rule->cr.flow; | |
3641 | odp_flow.flags = ODPFF_ZERO_TCP_FLAGS; | |
d65349ea | 3642 | dpif_flow_get(ofproto->dpif, &odp_flow); |
094e1514 JG |
3643 | |
3644 | if (odp_flow.stats.n_packets) { | |
3645 | update_time(ofproto, rule, &odp_flow.stats); | |
3646 | netflow_flow_update_flags(&rule->nf_flow, odp_flow.stats.ip_tos, | |
3647 | odp_flow.stats.tcp_flags); | |
3648 | } | |
0193b2af JG |
3649 | } |
3650 | ||
3651 | expired.flow = rule->cr.flow; | |
3652 | expired.packet_count = rule->packet_count + | |
3653 | odp_flow.stats.n_packets; | |
3654 | expired.byte_count = rule->byte_count + odp_flow.stats.n_bytes; | |
3655 | expired.used = rule->used; | |
3656 | ||
3657 | netflow_expire(ofproto->netflow, &rule->nf_flow, &expired); | |
3658 | ||
3659 | /* Schedule us to send the accumulated records once we have | |
3660 | * collected all of them. */ | |
3661 | poll_immediate_wake(); | |
3662 | } | |
3663 | } | |
3664 | ||
064af421 BP |
3665 | static void |
3666 | update_used(struct ofproto *p) | |
3667 | { | |
3668 | struct odp_flow *flows; | |
3669 | size_t n_flows; | |
3670 | size_t i; | |
3671 | int error; | |
3672 | ||
c228a364 | 3673 | error = dpif_flow_list_all(p->dpif, &flows, &n_flows); |
064af421 BP |
3674 | if (error) { |
3675 | return; | |
3676 | } | |
3677 | ||
3678 | for (i = 0; i < n_flows; i++) { | |
3679 | struct odp_flow *f = &flows[i]; | |
3680 | struct rule *rule; | |
3681 | ||
3682 | rule = rule_from_cls_rule( | |
3683 | classifier_find_rule_exactly(&p->cls, &f->key, 0, UINT16_MAX)); | |
3684 | if (!rule || !rule->installed) { | |
3685 | COVERAGE_INC(ofproto_unexpected_rule); | |
c228a364 | 3686 | dpif_flow_del(p->dpif, f); |
064af421 BP |
3687 | continue; |
3688 | } | |
3689 | ||
0193b2af | 3690 | update_time(p, rule, &f->stats); |
064af421 BP |
3691 | rule_account(p, rule, f->stats.n_bytes); |
3692 | } | |
3693 | free(flows); | |
3694 | } | |
3695 | ||
3696 | static void | |
3697 | do_send_packet_in(struct ofconn *ofconn, uint32_t buffer_id, | |
3698 | const struct ofpbuf *packet, int send_len) | |
3699 | { | |
372179d4 BP |
3700 | struct odp_msg *msg = packet->data; |
3701 | struct ofpbuf payload; | |
3702 | struct ofpbuf *opi; | |
3703 | uint8_t reason; | |
064af421 | 3704 | |
372179d4 | 3705 | /* Extract packet payload from 'msg'. */ |
064af421 BP |
3706 | payload.data = msg + 1; |
3707 | payload.size = msg->length - sizeof *msg; | |
3708 | ||
372179d4 BP |
3709 | /* Construct ofp_packet_in message. */ |
3710 | reason = msg->type == _ODPL_ACTION_NR ? OFPR_ACTION : OFPR_NO_MATCH; | |
3711 | opi = make_packet_in(buffer_id, odp_port_to_ofp_port(msg->port), reason, | |
3712 | &payload, send_len); | |
3713 | ||
3714 | /* Send. */ | |
3715 | rconn_send_with_limit(ofconn->rconn, opi, ofconn->packet_in_counter, 100); | |
064af421 BP |
3716 | } |
3717 | ||
3718 | static void | |
3719 | send_packet_in_action(struct ofpbuf *packet, void *p_) | |
3720 | { | |
3721 | struct ofproto *p = p_; | |
3722 | struct ofconn *ofconn; | |
3723 | struct odp_msg *msg; | |
3724 | ||
3725 | msg = packet->data; | |
3726 | LIST_FOR_EACH (ofconn, struct ofconn, node, &p->all_conns) { | |
3727 | if (ofconn == p->controller || ofconn->miss_send_len) { | |
3728 | do_send_packet_in(ofconn, UINT32_MAX, packet, msg->arg); | |
3729 | } | |
3730 | } | |
3731 | ofpbuf_delete(packet); | |
3732 | } | |
3733 | ||
3734 | static void | |
3735 | send_packet_in_miss(struct ofpbuf *packet, void *p_) | |
3736 | { | |
3737 | struct ofproto *p = p_; | |
7778bd15 | 3738 | bool in_fail_open = p->fail_open && fail_open_is_active(p->fail_open); |
064af421 BP |
3739 | struct ofconn *ofconn; |
3740 | struct ofpbuf payload; | |
3741 | struct odp_msg *msg; | |
3742 | ||
3743 | msg = packet->data; | |
3744 | payload.data = msg + 1; | |
3745 | payload.size = msg->length - sizeof *msg; | |
3746 | LIST_FOR_EACH (ofconn, struct ofconn, node, &p->all_conns) { | |
3747 | if (ofconn->miss_send_len) { | |
7778bd15 BP |
3748 | struct pktbuf *pb = ofconn->pktbuf; |
3749 | uint32_t buffer_id = (in_fail_open | |
3750 | ? pktbuf_get_null() | |
3751 | : pktbuf_save(pb, &payload, msg->port)); | |
064af421 | 3752 | int send_len = (buffer_id != UINT32_MAX ? ofconn->miss_send_len |
392804e7 | 3753 | : INT_MAX); |
064af421 BP |
3754 | do_send_packet_in(ofconn, buffer_id, packet, send_len); |
3755 | } | |
3756 | } | |
3757 | ofpbuf_delete(packet); | |
3758 | } | |
3759 | ||
3760 | static uint64_t | |
fa60c019 | 3761 | pick_datapath_id(const struct ofproto *ofproto) |
064af421 | 3762 | { |
fa60c019 | 3763 | const struct ofport *port; |
064af421 | 3764 | |
fa60c019 BP |
3765 | port = port_array_get(&ofproto->ports, ODPP_LOCAL); |
3766 | if (port) { | |
3767 | uint8_t ea[ETH_ADDR_LEN]; | |
3768 | int error; | |
3769 | ||
3770 | error = netdev_get_etheraddr(port->netdev, ea); | |
064af421 BP |
3771 | if (!error) { |
3772 | return eth_addr_to_uint64(ea); | |
3773 | } | |
3774 | VLOG_WARN("could not get MAC address for %s (%s)", | |
fa60c019 | 3775 | netdev_get_name(port->netdev), strerror(error)); |
064af421 | 3776 | } |
fa60c019 | 3777 | return ofproto->fallback_dpid; |
064af421 BP |
3778 | } |
3779 | ||
3780 | static uint64_t | |
3781 | pick_fallback_dpid(void) | |
3782 | { | |
3783 | uint8_t ea[ETH_ADDR_LEN]; | |
70150daf | 3784 | eth_addr_nicira_random(ea); |
064af421 BP |
3785 | return eth_addr_to_uint64(ea); |
3786 | } | |
3787 | \f | |
3788 | static bool | |
3789 | default_normal_ofhook_cb(const flow_t *flow, const struct ofpbuf *packet, | |
3790 | struct odp_actions *actions, tag_type *tags, | |
6a07af36 | 3791 | uint16_t *nf_output_iface, void *ofproto_) |
064af421 BP |
3792 | { |
3793 | struct ofproto *ofproto = ofproto_; | |
3794 | int out_port; | |
3795 | ||
3796 | /* Drop frames for reserved multicast addresses. */ | |
3797 | if (eth_addr_is_reserved(flow->dl_dst)) { | |
3798 | return true; | |
3799 | } | |
3800 | ||
3801 | /* Learn source MAC (but don't try to learn from revalidation). */ | |
3802 | if (packet != NULL) { | |
3803 | tag_type rev_tag = mac_learning_learn(ofproto->ml, flow->dl_src, | |
3804 | 0, flow->in_port); | |
3805 | if (rev_tag) { | |
3806 | /* The log messages here could actually be useful in debugging, | |
3807 | * so keep the rate limit relatively high. */ | |
3808 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(30, 300); | |
3809 | VLOG_DBG_RL(&rl, "learned that "ETH_ADDR_FMT" is on port %"PRIu16, | |
3810 | ETH_ADDR_ARGS(flow->dl_src), flow->in_port); | |
3811 | ofproto_revalidate(ofproto, rev_tag); | |
3812 | } | |
3813 | } | |
3814 | ||
3815 | /* Determine output port. */ | |
3816 | out_port = mac_learning_lookup_tag(ofproto->ml, flow->dl_dst, 0, tags); | |
3817 | if (out_port < 0) { | |
6a07af36 | 3818 | add_output_group_action(actions, DP_GROUP_FLOOD, nf_output_iface); |
064af421 BP |
3819 | } else if (out_port != flow->in_port) { |
3820 | odp_actions_add(actions, ODPAT_OUTPUT)->output.port = out_port; | |
6a07af36 | 3821 | *nf_output_iface = out_port; |
064af421 BP |
3822 | } else { |
3823 | /* Drop. */ | |
3824 | } | |
3825 | ||
3826 | return true; | |
3827 | } | |
3828 | ||
3829 | static const struct ofhooks default_ofhooks = { | |
3830 | NULL, | |
3831 | default_normal_ofhook_cb, | |
3832 | NULL, | |
3833 | NULL | |
3834 | }; |