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064af421 | 1 | /* |
c475ae67 | 2 | * Copyright (c) 2009, 2010 Nicira Networks. |
43253595 | 3 | * Copyright (c) 2010 Jean Tourrilhes - HP-Labs. |
064af421 | 4 | * |
a14bc59f BP |
5 | * Licensed under the Apache License, Version 2.0 (the "License"); |
6 | * you may not use this file except in compliance with the License. | |
7 | * You may obtain a copy of the License at: | |
064af421 | 8 | * |
a14bc59f BP |
9 | * http://www.apache.org/licenses/LICENSE-2.0 |
10 | * | |
11 | * Unless required by applicable law or agreed to in writing, software | |
12 | * distributed under the License is distributed on an "AS IS" BASIS, | |
13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
14 | * See the License for the specific language governing permissions and | |
15 | * limitations under the License. | |
064af421 BP |
16 | */ |
17 | ||
18 | #include <config.h> | |
19 | #include "ofproto.h" | |
20 | #include <errno.h> | |
21 | #include <inttypes.h> | |
22 | #include <net/if.h> | |
23 | #include <netinet/in.h> | |
24 | #include <stdbool.h> | |
25 | #include <stdlib.h> | |
26 | #include "classifier.h" | |
27 | #include "coverage.h" | |
28 | #include "discovery.h" | |
29 | #include "dpif.h" | |
4f2cad2c | 30 | #include "dynamic-string.h" |
064af421 BP |
31 | #include "fail-open.h" |
32 | #include "in-band.h" | |
33 | #include "mac-learning.h" | |
34 | #include "netdev.h" | |
35 | #include "netflow.h" | |
36 | #include "odp-util.h" | |
37 | #include "ofp-print.h" | |
72b06300 | 38 | #include "ofproto-sflow.h" |
064af421 BP |
39 | #include "ofpbuf.h" |
40 | #include "openflow/nicira-ext.h" | |
41 | #include "openflow/openflow.h" | |
064af421 BP |
42 | #include "openvswitch/datapath-protocol.h" |
43 | #include "packets.h" | |
44 | #include "pinsched.h" | |
45 | #include "pktbuf.h" | |
46 | #include "poll-loop.h" | |
47 | #include "port-array.h" | |
48 | #include "rconn.h" | |
49 | #include "shash.h" | |
50 | #include "status.h" | |
51 | #include "stp.h" | |
fe55ad15 | 52 | #include "stream-ssl.h" |
064af421 BP |
53 | #include "svec.h" |
54 | #include "tag.h" | |
55 | #include "timeval.h" | |
4f2cad2c | 56 | #include "unixctl.h" |
064af421 | 57 | #include "vconn.h" |
064af421 BP |
58 | #include "xtoxll.h" |
59 | ||
60 | #define THIS_MODULE VLM_ofproto | |
61 | #include "vlog.h" | |
62 | ||
72b06300 | 63 | #include "sflow_api.h" |
064af421 BP |
64 | |
65 | enum { | |
66 | TABLEID_HASH = 0, | |
67 | TABLEID_CLASSIFIER = 1 | |
68 | }; | |
69 | ||
70 | struct ofport { | |
71 | struct netdev *netdev; | |
72 | struct ofp_phy_port opp; /* In host byte order. */ | |
73 | }; | |
74 | ||
75 | static void ofport_free(struct ofport *); | |
76 | static void hton_ofp_phy_port(struct ofp_phy_port *); | |
77 | ||
78 | static int xlate_actions(const union ofp_action *in, size_t n_in, | |
79 | const flow_t *flow, struct ofproto *ofproto, | |
80 | const struct ofpbuf *packet, | |
81 | struct odp_actions *out, tag_type *tags, | |
6a07af36 | 82 | bool *may_set_up_flow, uint16_t *nf_output_iface); |
064af421 BP |
83 | |
84 | struct rule { | |
85 | struct cls_rule cr; | |
86 | ||
39997502 JP |
87 | uint64_t flow_cookie; /* Controller-issued identifier. |
88 | (Kept in network-byte order.) */ | |
064af421 BP |
89 | uint16_t idle_timeout; /* In seconds from time of last use. */ |
90 | uint16_t hard_timeout; /* In seconds from time of creation. */ | |
ca069229 | 91 | bool send_flow_removed; /* Send a flow removed message? */ |
064af421 BP |
92 | long long int used; /* Last-used time (0 if never used). */ |
93 | long long int created; /* Creation time. */ | |
94 | uint64_t packet_count; /* Number of packets received. */ | |
95 | uint64_t byte_count; /* Number of bytes received. */ | |
96 | uint64_t accounted_bytes; /* Number of bytes passed to account_cb. */ | |
064af421 | 97 | tag_type tags; /* Tags (set only by hooks). */ |
0193b2af | 98 | struct netflow_flow nf_flow; /* Per-flow NetFlow tracking data. */ |
064af421 BP |
99 | |
100 | /* If 'super' is non-NULL, this rule is a subrule, that is, it is an | |
101 | * exact-match rule (having cr.wc.wildcards of 0) generated from the | |
102 | * wildcard rule 'super'. In this case, 'list' is an element of the | |
103 | * super-rule's list. | |
104 | * | |
105 | * If 'super' is NULL, this rule is a super-rule, and 'list' is the head of | |
106 | * a list of subrules. A super-rule with no wildcards (where | |
107 | * cr.wc.wildcards is 0) will never have any subrules. */ | |
108 | struct rule *super; | |
109 | struct list list; | |
110 | ||
111 | /* OpenFlow actions. | |
79eee1eb BP |
112 | * |
113 | * 'n_actions' is the number of elements in the 'actions' array. A single | |
114 | * action may take up more more than one element's worth of space. | |
064af421 BP |
115 | * |
116 | * A subrule has no actions (it uses the super-rule's actions). */ | |
117 | int n_actions; | |
118 | union ofp_action *actions; | |
119 | ||
120 | /* Datapath actions. | |
121 | * | |
122 | * A super-rule with wildcard fields never has ODP actions (since the | |
123 | * datapath only supports exact-match flows). */ | |
124 | bool installed; /* Installed in datapath? */ | |
125 | bool may_install; /* True ordinarily; false if actions must | |
126 | * be reassessed for every packet. */ | |
127 | int n_odp_actions; | |
128 | union odp_action *odp_actions; | |
129 | }; | |
130 | ||
131 | static inline bool | |
132 | rule_is_hidden(const struct rule *rule) | |
133 | { | |
134 | /* Subrules are merely an implementation detail, so hide them from the | |
135 | * controller. */ | |
136 | if (rule->super != NULL) { | |
137 | return true; | |
138 | } | |
139 | ||
8cd4882f | 140 | /* Rules with priority higher than UINT16_MAX are set up by ofproto itself |
064af421 BP |
141 | * (e.g. by in-band control) and are intentionally hidden from the |
142 | * controller. */ | |
143 | if (rule->cr.priority > UINT16_MAX) { | |
144 | return true; | |
145 | } | |
146 | ||
147 | return false; | |
148 | } | |
149 | ||
0193b2af JG |
150 | static struct rule *rule_create(struct ofproto *, struct rule *super, |
151 | const union ofp_action *, size_t n_actions, | |
ca069229 | 152 | uint16_t idle_timeout, uint16_t hard_timeout, |
39997502 | 153 | uint64_t flow_cookie, bool send_flow_removed); |
064af421 BP |
154 | static void rule_free(struct rule *); |
155 | static void rule_destroy(struct ofproto *, struct rule *); | |
156 | static struct rule *rule_from_cls_rule(const struct cls_rule *); | |
157 | static void rule_insert(struct ofproto *, struct rule *, | |
158 | struct ofpbuf *packet, uint16_t in_port); | |
159 | static void rule_remove(struct ofproto *, struct rule *); | |
160 | static bool rule_make_actions(struct ofproto *, struct rule *, | |
161 | const struct ofpbuf *packet); | |
162 | static void rule_install(struct ofproto *, struct rule *, | |
163 | struct rule *displaced_rule); | |
164 | static void rule_uninstall(struct ofproto *, struct rule *); | |
165 | static void rule_post_uninstall(struct ofproto *, struct rule *); | |
ca069229 JP |
166 | static void send_flow_removed(struct ofproto *p, struct rule *rule, |
167 | long long int now, uint8_t reason); | |
064af421 | 168 | |
76ce9432 BP |
169 | /* ofproto supports two kinds of OpenFlow connections: |
170 | * | |
171 | * - "Controller connections": Connections to ordinary OpenFlow controllers. | |
172 | * ofproto maintains persistent connections to these controllers and by | |
173 | * default sends them asynchronous messages such as packet-ins. | |
174 | * | |
175 | * - "Transient connections", e.g. from ovs-ofctl. When these connections | |
176 | * drop, it is the other side's responsibility to reconnect them if | |
177 | * necessary. ofproto does not send them asynchronous messages by default. | |
178 | */ | |
179 | enum ofconn_type { | |
180 | OFCONN_CONTROLLER, /* An OpenFlow controller. */ | |
181 | OFCONN_TRANSIENT /* A transient connection. */ | |
182 | }; | |
064af421 | 183 | |
76ce9432 BP |
184 | /* An OpenFlow connection. */ |
185 | struct ofconn { | |
186 | struct ofproto *ofproto; /* The ofproto that owns this connection. */ | |
187 | struct list node; /* In struct ofproto's "all_conns" list. */ | |
188 | struct rconn *rconn; /* OpenFlow connection. */ | |
189 | enum ofconn_type type; /* Type. */ | |
190 | ||
191 | /* OFPT_PACKET_IN related data. */ | |
192 | struct rconn_packet_counter *packet_in_counter; /* # queued on 'rconn'. */ | |
193 | struct pinsched *schedulers[2]; /* Indexed by reason code; see below. */ | |
194 | struct pktbuf *pktbuf; /* OpenFlow packet buffers. */ | |
195 | int miss_send_len; /* Bytes to send of buffered packets. */ | |
196 | ||
197 | /* Number of OpenFlow messages queued on 'rconn' as replies to OpenFlow | |
198 | * requests, and the maximum number before we stop reading OpenFlow | |
199 | * requests. */ | |
064af421 BP |
200 | #define OFCONN_REPLY_MAX 100 |
201 | struct rconn_packet_counter *reply_counter; | |
76ce9432 BP |
202 | |
203 | /* type == OFCONN_CONTROLLER only. */ | |
9deba63b | 204 | enum nx_role role; /* Role. */ |
76ce9432 BP |
205 | struct hmap_node hmap_node; /* In struct ofproto's "controllers" map. */ |
206 | struct discovery *discovery; /* Controller discovery object, if enabled. */ | |
207 | struct status_category *ss; /* Switch status category. */ | |
d2ede7bc | 208 | enum ofproto_band band; /* In-band or out-of-band? */ |
064af421 BP |
209 | }; |
210 | ||
76ce9432 BP |
211 | /* We use OFPR_NO_MATCH and OFPR_ACTION as indexes into struct ofconn's |
212 | * "schedulers" array. Their values are 0 and 1, and their meanings and values | |
213 | * coincide with _ODPL_MISS_NR and _ODPL_ACTION_NR, so this is convenient. In | |
214 | * case anything ever changes, check their values here. */ | |
215 | #define N_SCHEDULERS 2 | |
216 | BUILD_ASSERT_DECL(OFPR_NO_MATCH == 0); | |
217 | BUILD_ASSERT_DECL(OFPR_NO_MATCH == _ODPL_MISS_NR); | |
218 | BUILD_ASSERT_DECL(OFPR_ACTION == 1); | |
219 | BUILD_ASSERT_DECL(OFPR_ACTION == _ODPL_ACTION_NR); | |
220 | ||
221 | static struct ofconn *ofconn_create(struct ofproto *, struct rconn *, | |
222 | enum ofconn_type); | |
c475ae67 | 223 | static void ofconn_destroy(struct ofconn *); |
064af421 BP |
224 | static void ofconn_run(struct ofconn *, struct ofproto *); |
225 | static void ofconn_wait(struct ofconn *); | |
c91248b3 BP |
226 | static bool ofconn_receives_async_msgs(const struct ofconn *); |
227 | ||
064af421 BP |
228 | static void queue_tx(struct ofpbuf *msg, const struct ofconn *ofconn, |
229 | struct rconn_packet_counter *counter); | |
230 | ||
76ce9432 BP |
231 | static void send_packet_in(struct ofproto *, struct ofpbuf *odp_msg); |
232 | static void do_send_packet_in(struct ofpbuf *odp_msg, void *ofconn); | |
233 | ||
064af421 BP |
234 | struct ofproto { |
235 | /* Settings. */ | |
236 | uint64_t datapath_id; /* Datapath ID. */ | |
237 | uint64_t fallback_dpid; /* Datapath ID if no better choice found. */ | |
5a719c38 JP |
238 | char *mfr_desc; /* Manufacturer. */ |
239 | char *hw_desc; /* Hardware. */ | |
240 | char *sw_desc; /* Software version. */ | |
241 | char *serial_desc; /* Serial number. */ | |
8abc4ed7 | 242 | char *dp_desc; /* Datapath description. */ |
064af421 BP |
243 | |
244 | /* Datapath. */ | |
c228a364 | 245 | struct dpif *dpif; |
e9e28be3 | 246 | struct netdev_monitor *netdev_monitor; |
064af421 BP |
247 | struct port_array ports; /* Index is ODP port nr; ofport->opp.port_no is |
248 | * OFP port nr. */ | |
249 | struct shash port_by_name; | |
250 | uint32_t max_ports; | |
251 | ||
252 | /* Configuration. */ | |
253 | struct switch_status *switch_status; | |
064af421 | 254 | struct fail_open *fail_open; |
064af421 | 255 | struct netflow *netflow; |
72b06300 | 256 | struct ofproto_sflow *sflow; |
064af421 | 257 | |
d2ede7bc BP |
258 | /* In-band control. */ |
259 | struct in_band *in_band; | |
260 | long long int next_in_band_update; | |
917e50e1 BP |
261 | struct sockaddr_in *extra_in_band_remotes; |
262 | size_t n_extra_remotes; | |
263 | ||
064af421 BP |
264 | /* Flow table. */ |
265 | struct classifier cls; | |
266 | bool need_revalidate; | |
267 | long long int next_expiration; | |
268 | struct tag_set revalidate_set; | |
659586ef | 269 | bool tun_id_from_cookie; |
064af421 BP |
270 | |
271 | /* OpenFlow connections. */ | |
76ce9432 BP |
272 | struct hmap controllers; /* Controller "struct ofconn"s. */ |
273 | struct list all_conns; /* Contains "struct ofconn"s. */ | |
064af421 BP |
274 | struct pvconn **listeners; |
275 | size_t n_listeners; | |
276 | struct pvconn **snoops; | |
277 | size_t n_snoops; | |
278 | ||
279 | /* Hooks for ovs-vswitchd. */ | |
280 | const struct ofhooks *ofhooks; | |
281 | void *aux; | |
282 | ||
283 | /* Used by default ofhooks. */ | |
284 | struct mac_learning *ml; | |
285 | }; | |
286 | ||
287 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
288 | ||
289 | static const struct ofhooks default_ofhooks; | |
290 | ||
fa60c019 | 291 | static uint64_t pick_datapath_id(const struct ofproto *); |
064af421 | 292 | static uint64_t pick_fallback_dpid(void); |
76ce9432 | 293 | |
064af421 | 294 | static void update_used(struct ofproto *); |
0193b2af JG |
295 | static void update_stats(struct ofproto *, struct rule *, |
296 | const struct odp_flow_stats *); | |
064af421 | 297 | static void expire_rule(struct cls_rule *, void *ofproto); |
0193b2af | 298 | static void active_timeout(struct ofproto *ofproto, struct rule *rule); |
064af421 BP |
299 | static bool revalidate_rule(struct ofproto *p, struct rule *rule); |
300 | static void revalidate_cb(struct cls_rule *rule_, void *p_); | |
301 | ||
302 | static void handle_odp_msg(struct ofproto *, struct ofpbuf *); | |
303 | ||
304 | static void handle_openflow(struct ofconn *, struct ofproto *, | |
305 | struct ofpbuf *); | |
306 | ||
72b06300 BP |
307 | static void refresh_port_groups(struct ofproto *); |
308 | ||
064af421 BP |
309 | static void update_port(struct ofproto *, const char *devname); |
310 | static int init_ports(struct ofproto *); | |
311 | static void reinit_ports(struct ofproto *); | |
312 | ||
313 | int | |
1a6f1e2a JG |
314 | ofproto_create(const char *datapath, const char *datapath_type, |
315 | const struct ofhooks *ofhooks, void *aux, | |
064af421 BP |
316 | struct ofproto **ofprotop) |
317 | { | |
064af421 BP |
318 | struct odp_stats stats; |
319 | struct ofproto *p; | |
c228a364 | 320 | struct dpif *dpif; |
064af421 BP |
321 | int error; |
322 | ||
323 | *ofprotop = NULL; | |
324 | ||
325 | /* Connect to datapath and start listening for messages. */ | |
1a6f1e2a | 326 | error = dpif_open(datapath, datapath_type, &dpif); |
064af421 BP |
327 | if (error) { |
328 | VLOG_ERR("failed to open datapath %s: %s", datapath, strerror(error)); | |
329 | return error; | |
330 | } | |
c228a364 | 331 | error = dpif_get_dp_stats(dpif, &stats); |
064af421 BP |
332 | if (error) { |
333 | VLOG_ERR("failed to obtain stats for datapath %s: %s", | |
334 | datapath, strerror(error)); | |
c228a364 | 335 | dpif_close(dpif); |
064af421 BP |
336 | return error; |
337 | } | |
72b06300 | 338 | error = dpif_recv_set_mask(dpif, ODPL_MISS | ODPL_ACTION | ODPL_SFLOW); |
064af421 BP |
339 | if (error) { |
340 | VLOG_ERR("failed to listen on datapath %s: %s", | |
341 | datapath, strerror(error)); | |
c228a364 | 342 | dpif_close(dpif); |
064af421 BP |
343 | return error; |
344 | } | |
c228a364 | 345 | dpif_flow_flush(dpif); |
8f24562a | 346 | dpif_recv_purge(dpif); |
064af421 BP |
347 | |
348 | /* Initialize settings. */ | |
ec6fde61 | 349 | p = xzalloc(sizeof *p); |
064af421 | 350 | p->fallback_dpid = pick_fallback_dpid(); |
fa60c019 | 351 | p->datapath_id = p->fallback_dpid; |
5a719c38 JP |
352 | p->mfr_desc = xstrdup(DEFAULT_MFR_DESC); |
353 | p->hw_desc = xstrdup(DEFAULT_HW_DESC); | |
354 | p->sw_desc = xstrdup(DEFAULT_SW_DESC); | |
355 | p->serial_desc = xstrdup(DEFAULT_SERIAL_DESC); | |
23ff2821 | 356 | p->dp_desc = xstrdup(DEFAULT_DP_DESC); |
064af421 BP |
357 | |
358 | /* Initialize datapath. */ | |
359 | p->dpif = dpif; | |
8b61709d | 360 | p->netdev_monitor = netdev_monitor_create(); |
064af421 BP |
361 | port_array_init(&p->ports); |
362 | shash_init(&p->port_by_name); | |
363 | p->max_ports = stats.max_ports; | |
364 | ||
365 | /* Initialize submodules. */ | |
366 | p->switch_status = switch_status_create(p); | |
367 | p->in_band = NULL; | |
064af421 | 368 | p->fail_open = NULL; |
064af421 | 369 | p->netflow = NULL; |
72b06300 | 370 | p->sflow = NULL; |
064af421 BP |
371 | |
372 | /* Initialize flow table. */ | |
373 | classifier_init(&p->cls); | |
374 | p->need_revalidate = false; | |
375 | p->next_expiration = time_msec() + 1000; | |
376 | tag_set_init(&p->revalidate_set); | |
377 | ||
378 | /* Initialize OpenFlow connections. */ | |
379 | list_init(&p->all_conns); | |
76ce9432 | 380 | hmap_init(&p->controllers); |
064af421 BP |
381 | p->listeners = NULL; |
382 | p->n_listeners = 0; | |
383 | p->snoops = NULL; | |
384 | p->n_snoops = 0; | |
385 | ||
386 | /* Initialize hooks. */ | |
387 | if (ofhooks) { | |
388 | p->ofhooks = ofhooks; | |
389 | p->aux = aux; | |
390 | p->ml = NULL; | |
391 | } else { | |
392 | p->ofhooks = &default_ofhooks; | |
393 | p->aux = p; | |
394 | p->ml = mac_learning_create(); | |
395 | } | |
396 | ||
fa60c019 BP |
397 | /* Pick final datapath ID. */ |
398 | p->datapath_id = pick_datapath_id(p); | |
b123cc3c | 399 | VLOG_INFO("using datapath ID %016"PRIx64, p->datapath_id); |
fa60c019 | 400 | |
064af421 BP |
401 | *ofprotop = p; |
402 | return 0; | |
403 | } | |
404 | ||
405 | void | |
406 | ofproto_set_datapath_id(struct ofproto *p, uint64_t datapath_id) | |
407 | { | |
408 | uint64_t old_dpid = p->datapath_id; | |
fa60c019 | 409 | p->datapath_id = datapath_id ? datapath_id : pick_datapath_id(p); |
064af421 | 410 | if (p->datapath_id != old_dpid) { |
76ce9432 BP |
411 | struct ofconn *ofconn; |
412 | ||
b123cc3c | 413 | VLOG_INFO("datapath ID changed to %016"PRIx64, p->datapath_id); |
76ce9432 BP |
414 | |
415 | /* Force all active connections to reconnect, since there is no way to | |
416 | * notify a controller that the datapath ID has changed. */ | |
417 | LIST_FOR_EACH (ofconn, struct ofconn, node, &p->all_conns) { | |
418 | rconn_reconnect(ofconn->rconn); | |
419 | } | |
064af421 BP |
420 | } |
421 | } | |
422 | ||
76ce9432 BP |
423 | static bool |
424 | is_discovery_controller(const struct ofproto_controller *c) | |
425 | { | |
426 | return !strcmp(c->target, "discover"); | |
427 | } | |
428 | ||
429 | static bool | |
430 | is_in_band_controller(const struct ofproto_controller *c) | |
431 | { | |
432 | return is_discovery_controller(c) || c->band == OFPROTO_IN_BAND; | |
433 | } | |
434 | ||
435 | /* Creates a new controller in 'ofproto'. Some of the settings are initially | |
436 | * drawn from 'c', but update_controller() needs to be called later to finish | |
437 | * the new ofconn's configuration. */ | |
438 | static void | |
439 | add_controller(struct ofproto *ofproto, const struct ofproto_controller *c) | |
440 | { | |
441 | struct discovery *discovery; | |
442 | struct ofconn *ofconn; | |
443 | ||
444 | if (is_discovery_controller(c)) { | |
445 | int error = discovery_create(c->accept_re, c->update_resolv_conf, | |
446 | ofproto->dpif, ofproto->switch_status, | |
447 | &discovery); | |
448 | if (error) { | |
449 | return; | |
450 | } | |
451 | } else { | |
452 | discovery = NULL; | |
453 | } | |
454 | ||
455 | ofconn = ofconn_create(ofproto, rconn_create(5, 8), OFCONN_CONTROLLER); | |
456 | ofconn->pktbuf = pktbuf_create(); | |
457 | ofconn->miss_send_len = OFP_DEFAULT_MISS_SEND_LEN; | |
458 | if (discovery) { | |
459 | ofconn->discovery = discovery; | |
460 | } else { | |
461 | rconn_connect(ofconn->rconn, c->target); | |
462 | } | |
463 | hmap_insert(&ofproto->controllers, &ofconn->hmap_node, | |
464 | hash_string(c->target, 0)); | |
465 | } | |
466 | ||
467 | /* Reconfigures 'ofconn' to match 'c'. This function cannot update an ofconn's | |
468 | * target or turn discovery on or off (these are done by creating new ofconns | |
469 | * and deleting old ones), but it can update the rest of an ofconn's | |
470 | * settings. */ | |
471 | static void | |
472 | update_controller(struct ofconn *ofconn, const struct ofproto_controller *c) | |
064af421 | 473 | { |
76ce9432 BP |
474 | struct ofproto *ofproto = ofconn->ofproto; |
475 | int probe_interval; | |
476 | int i; | |
79c9f2ee | 477 | |
d2ede7bc BP |
478 | ofconn->band = (is_in_band_controller(c) |
479 | ? OFPROTO_IN_BAND : OFPROTO_OUT_OF_BAND); | |
480 | ||
76ce9432 | 481 | rconn_set_max_backoff(ofconn->rconn, c->max_backoff); |
79c9f2ee | 482 | |
76ce9432 BP |
483 | probe_interval = c->probe_interval ? MAX(c->probe_interval, 5) : 0; |
484 | rconn_set_probe_interval(ofconn->rconn, probe_interval); | |
79c9f2ee | 485 | |
76ce9432 BP |
486 | if (ofconn->discovery) { |
487 | discovery_set_update_resolv_conf(ofconn->discovery, | |
488 | c->update_resolv_conf); | |
489 | discovery_set_accept_controller_re(ofconn->discovery, c->accept_re); | |
490 | } | |
79c9f2ee | 491 | |
76ce9432 BP |
492 | for (i = 0; i < N_SCHEDULERS; i++) { |
493 | struct pinsched **s = &ofconn->schedulers[i]; | |
79c9f2ee | 494 | |
76ce9432 BP |
495 | if (c->rate_limit > 0) { |
496 | if (!*s) { | |
497 | *s = pinsched_create(c->rate_limit, c->burst_limit, | |
498 | ofproto->switch_status); | |
79c9f2ee | 499 | } else { |
76ce9432 | 500 | pinsched_set_limits(*s, c->rate_limit, c->burst_limit); |
79c9f2ee | 501 | } |
76ce9432 BP |
502 | } else { |
503 | pinsched_destroy(*s); | |
504 | *s = NULL; | |
79c9f2ee | 505 | } |
76ce9432 BP |
506 | } |
507 | } | |
79c9f2ee | 508 | |
76ce9432 BP |
509 | static const char * |
510 | ofconn_get_target(const struct ofconn *ofconn) | |
511 | { | |
512 | return ofconn->discovery ? "discover" : rconn_get_name(ofconn->rconn); | |
513 | } | |
514 | ||
515 | static struct ofconn * | |
516 | find_controller_by_target(struct ofproto *ofproto, const char *target) | |
517 | { | |
518 | struct ofconn *ofconn; | |
519 | ||
520 | HMAP_FOR_EACH_WITH_HASH (ofconn, struct ofconn, hmap_node, | |
521 | hash_string(target, 0), &ofproto->controllers) { | |
522 | if (!strcmp(ofconn_get_target(ofconn), target)) { | |
523 | return ofconn; | |
79c9f2ee | 524 | } |
064af421 | 525 | } |
76ce9432 BP |
526 | return NULL; |
527 | } | |
064af421 | 528 | |
d2ede7bc BP |
529 | static void |
530 | update_in_band_remotes(struct ofproto *ofproto) | |
531 | { | |
532 | const struct ofconn *ofconn; | |
533 | struct sockaddr_in *addrs; | |
917e50e1 | 534 | size_t max_addrs, n_addrs; |
d2ede7bc | 535 | bool discovery; |
917e50e1 | 536 | size_t i; |
d2ede7bc | 537 | |
917e50e1 BP |
538 | /* Allocate enough memory for as many remotes as we could possibly have. */ |
539 | max_addrs = ofproto->n_extra_remotes + hmap_count(&ofproto->controllers); | |
540 | addrs = xmalloc(max_addrs * sizeof *addrs); | |
d2ede7bc BP |
541 | n_addrs = 0; |
542 | ||
543 | /* Add all the remotes. */ | |
544 | discovery = false; | |
545 | HMAP_FOR_EACH (ofconn, struct ofconn, hmap_node, &ofproto->controllers) { | |
546 | struct sockaddr_in *sin = &addrs[n_addrs]; | |
547 | ||
548 | sin->sin_addr.s_addr = rconn_get_remote_ip(ofconn->rconn); | |
549 | if (sin->sin_addr.s_addr) { | |
550 | sin->sin_port = rconn_get_remote_port(ofconn->rconn); | |
551 | n_addrs++; | |
552 | } | |
553 | if (ofconn->discovery) { | |
554 | discovery = true; | |
555 | } | |
556 | } | |
917e50e1 BP |
557 | for (i = 0; i < ofproto->n_extra_remotes; i++) { |
558 | addrs[n_addrs++] = ofproto->extra_in_band_remotes[i]; | |
559 | } | |
d2ede7bc BP |
560 | |
561 | /* Create or update or destroy in-band. | |
562 | * | |
563 | * Ordinarily we only enable in-band if there's at least one remote | |
564 | * address, but discovery needs the in-band rules for DHCP to be installed | |
565 | * even before we know any remote addresses. */ | |
566 | if (n_addrs || discovery) { | |
567 | if (!ofproto->in_band) { | |
568 | in_band_create(ofproto, ofproto->dpif, ofproto->switch_status, | |
569 | &ofproto->in_band); | |
570 | } | |
571 | in_band_set_remotes(ofproto->in_band, addrs, n_addrs); | |
572 | ofproto->next_in_band_update = time_msec() + 1000; | |
573 | } else { | |
574 | in_band_destroy(ofproto->in_band); | |
575 | ofproto->in_band = NULL; | |
576 | } | |
577 | ||
578 | /* Clean up. */ | |
579 | free(addrs); | |
580 | } | |
581 | ||
76ce9432 BP |
582 | void |
583 | ofproto_set_controllers(struct ofproto *p, | |
584 | const struct ofproto_controller *controllers, | |
585 | size_t n_controllers) | |
586 | { | |
587 | struct shash new_controllers; | |
76ce9432 BP |
588 | enum ofproto_fail_mode fail_mode; |
589 | struct ofconn *ofconn, *next; | |
590 | bool ss_exists; | |
76ce9432 | 591 | size_t i; |
79c9f2ee | 592 | |
76ce9432 BP |
593 | shash_init(&new_controllers); |
594 | for (i = 0; i < n_controllers; i++) { | |
595 | const struct ofproto_controller *c = &controllers[i]; | |
596 | ||
597 | shash_add_once(&new_controllers, c->target, &controllers[i]); | |
598 | if (!find_controller_by_target(p, c->target)) { | |
599 | add_controller(p, c); | |
600 | } | |
601 | } | |
602 | ||
76ce9432 BP |
603 | fail_mode = OFPROTO_FAIL_STANDALONE; |
604 | ss_exists = false; | |
605 | HMAP_FOR_EACH_SAFE (ofconn, next, struct ofconn, hmap_node, | |
606 | &p->controllers) { | |
607 | struct ofproto_controller *c; | |
608 | ||
609 | c = shash_find_data(&new_controllers, ofconn_get_target(ofconn)); | |
610 | if (!c) { | |
611 | ofconn_destroy(ofconn); | |
79c9f2ee | 612 | } else { |
76ce9432 | 613 | update_controller(ofconn, c); |
76ce9432 BP |
614 | if (ofconn->ss) { |
615 | ss_exists = true; | |
616 | } | |
76ce9432 BP |
617 | if (c->fail == OFPROTO_FAIL_SECURE) { |
618 | fail_mode = OFPROTO_FAIL_SECURE; | |
619 | } | |
620 | } | |
621 | } | |
622 | shash_destroy(&new_controllers); | |
623 | ||
d2ede7bc | 624 | update_in_band_remotes(p); |
76ce9432 BP |
625 | |
626 | if (!hmap_is_empty(&p->controllers) | |
627 | && fail_mode == OFPROTO_FAIL_STANDALONE) { | |
628 | struct rconn **rconns; | |
629 | size_t n; | |
79c9f2ee | 630 | |
79c9f2ee | 631 | if (!p->fail_open) { |
76ce9432 BP |
632 | p->fail_open = fail_open_create(p, p->switch_status); |
633 | } | |
634 | ||
635 | n = 0; | |
636 | rconns = xmalloc(hmap_count(&p->controllers) * sizeof *rconns); | |
637 | HMAP_FOR_EACH (ofconn, struct ofconn, hmap_node, &p->controllers) { | |
638 | rconns[n++] = ofconn->rconn; | |
79c9f2ee | 639 | } |
76ce9432 BP |
640 | |
641 | fail_open_set_controllers(p->fail_open, rconns, n); | |
642 | /* p->fail_open takes ownership of 'rconns'. */ | |
79c9f2ee BP |
643 | } else { |
644 | fail_open_destroy(p->fail_open); | |
645 | p->fail_open = NULL; | |
646 | } | |
647 | ||
76ce9432 BP |
648 | if (!hmap_is_empty(&p->controllers) && !ss_exists) { |
649 | ofconn = CONTAINER_OF(hmap_first(&p->controllers), | |
650 | struct ofconn, hmap_node); | |
651 | ofconn->ss = switch_status_register(p->switch_status, "remote", | |
652 | rconn_status_cb, ofconn->rconn); | |
79c9f2ee | 653 | } |
064af421 BP |
654 | } |
655 | ||
917e50e1 BP |
656 | static bool |
657 | any_extras_changed(const struct ofproto *ofproto, | |
658 | const struct sockaddr_in *extras, size_t n) | |
659 | { | |
660 | size_t i; | |
661 | ||
662 | if (n != ofproto->n_extra_remotes) { | |
663 | return true; | |
664 | } | |
665 | ||
666 | for (i = 0; i < n; i++) { | |
667 | const struct sockaddr_in *old = &ofproto->extra_in_band_remotes[i]; | |
668 | const struct sockaddr_in *new = &extras[i]; | |
669 | ||
670 | if (old->sin_addr.s_addr != new->sin_addr.s_addr || | |
671 | old->sin_port != new->sin_port) { | |
672 | return true; | |
673 | } | |
674 | } | |
675 | ||
676 | return false; | |
677 | } | |
678 | ||
679 | /* Sets the 'n' TCP port addresses in 'extras' as ones to which 'ofproto''s | |
680 | * in-band control should guarantee access, in the same way that in-band | |
681 | * control guarantees access to OpenFlow controllers. */ | |
682 | void | |
683 | ofproto_set_extra_in_band_remotes(struct ofproto *ofproto, | |
684 | const struct sockaddr_in *extras, size_t n) | |
685 | { | |
686 | if (!any_extras_changed(ofproto, extras, n)) { | |
687 | return; | |
688 | } | |
689 | ||
690 | free(ofproto->extra_in_band_remotes); | |
691 | ofproto->n_extra_remotes = n; | |
692 | ofproto->extra_in_band_remotes = xmemdup(extras, n * sizeof *extras); | |
693 | ||
694 | update_in_band_remotes(ofproto); | |
695 | } | |
696 | ||
064af421 BP |
697 | void |
698 | ofproto_set_desc(struct ofproto *p, | |
5a719c38 JP |
699 | const char *mfr_desc, const char *hw_desc, |
700 | const char *sw_desc, const char *serial_desc, | |
8abc4ed7 | 701 | const char *dp_desc) |
064af421 | 702 | { |
5a719c38 JP |
703 | struct ofp_desc_stats *ods; |
704 | ||
705 | if (mfr_desc) { | |
706 | if (strlen(mfr_desc) >= sizeof ods->mfr_desc) { | |
707 | VLOG_WARN("truncating mfr_desc, must be less than %zu characters", | |
708 | sizeof ods->mfr_desc); | |
709 | } | |
710 | free(p->mfr_desc); | |
711 | p->mfr_desc = xstrdup(mfr_desc); | |
064af421 | 712 | } |
5a719c38 JP |
713 | if (hw_desc) { |
714 | if (strlen(hw_desc) >= sizeof ods->hw_desc) { | |
715 | VLOG_WARN("truncating hw_desc, must be less than %zu characters", | |
716 | sizeof ods->hw_desc); | |
717 | } | |
718 | free(p->hw_desc); | |
719 | p->hw_desc = xstrdup(hw_desc); | |
064af421 | 720 | } |
5a719c38 JP |
721 | if (sw_desc) { |
722 | if (strlen(sw_desc) >= sizeof ods->sw_desc) { | |
723 | VLOG_WARN("truncating sw_desc, must be less than %zu characters", | |
724 | sizeof ods->sw_desc); | |
725 | } | |
726 | free(p->sw_desc); | |
727 | p->sw_desc = xstrdup(sw_desc); | |
728 | } | |
729 | if (serial_desc) { | |
730 | if (strlen(serial_desc) >= sizeof ods->serial_num) { | |
731 | VLOG_WARN("truncating serial_desc, must be less than %zu " | |
732 | "characters", | |
733 | sizeof ods->serial_num); | |
734 | } | |
735 | free(p->serial_desc); | |
736 | p->serial_desc = xstrdup(serial_desc); | |
064af421 | 737 | } |
8abc4ed7 | 738 | if (dp_desc) { |
5a719c38 JP |
739 | if (strlen(dp_desc) >= sizeof ods->dp_desc) { |
740 | VLOG_WARN("truncating dp_desc, must be less than %zu characters", | |
741 | sizeof ods->dp_desc); | |
742 | } | |
8abc4ed7 JP |
743 | free(p->dp_desc); |
744 | p->dp_desc = xstrdup(dp_desc); | |
745 | } | |
064af421 BP |
746 | } |
747 | ||
064af421 BP |
748 | static int |
749 | set_pvconns(struct pvconn ***pvconnsp, size_t *n_pvconnsp, | |
750 | const struct svec *svec) | |
751 | { | |
752 | struct pvconn **pvconns = *pvconnsp; | |
753 | size_t n_pvconns = *n_pvconnsp; | |
754 | int retval = 0; | |
755 | size_t i; | |
756 | ||
757 | for (i = 0; i < n_pvconns; i++) { | |
758 | pvconn_close(pvconns[i]); | |
759 | } | |
760 | free(pvconns); | |
761 | ||
762 | pvconns = xmalloc(svec->n * sizeof *pvconns); | |
763 | n_pvconns = 0; | |
764 | for (i = 0; i < svec->n; i++) { | |
765 | const char *name = svec->names[i]; | |
766 | struct pvconn *pvconn; | |
767 | int error; | |
768 | ||
769 | error = pvconn_open(name, &pvconn); | |
770 | if (!error) { | |
771 | pvconns[n_pvconns++] = pvconn; | |
772 | } else { | |
773 | VLOG_ERR("failed to listen on %s: %s", name, strerror(error)); | |
774 | if (!retval) { | |
775 | retval = error; | |
776 | } | |
777 | } | |
778 | } | |
779 | ||
780 | *pvconnsp = pvconns; | |
781 | *n_pvconnsp = n_pvconns; | |
782 | ||
783 | return retval; | |
784 | } | |
785 | ||
786 | int | |
787 | ofproto_set_listeners(struct ofproto *ofproto, const struct svec *listeners) | |
788 | { | |
789 | return set_pvconns(&ofproto->listeners, &ofproto->n_listeners, listeners); | |
790 | } | |
791 | ||
792 | int | |
793 | ofproto_set_snoops(struct ofproto *ofproto, const struct svec *snoops) | |
794 | { | |
795 | return set_pvconns(&ofproto->snoops, &ofproto->n_snoops, snoops); | |
796 | } | |
797 | ||
798 | int | |
0193b2af JG |
799 | ofproto_set_netflow(struct ofproto *ofproto, |
800 | const struct netflow_options *nf_options) | |
064af421 | 801 | { |
76343538 | 802 | if (nf_options && nf_options->collectors.n) { |
064af421 BP |
803 | if (!ofproto->netflow) { |
804 | ofproto->netflow = netflow_create(); | |
805 | } | |
0193b2af | 806 | return netflow_set_options(ofproto->netflow, nf_options); |
064af421 BP |
807 | } else { |
808 | netflow_destroy(ofproto->netflow); | |
809 | ofproto->netflow = NULL; | |
810 | return 0; | |
811 | } | |
812 | } | |
813 | ||
72b06300 BP |
814 | void |
815 | ofproto_set_sflow(struct ofproto *ofproto, | |
816 | const struct ofproto_sflow_options *oso) | |
817 | { | |
818 | struct ofproto_sflow *os = ofproto->sflow; | |
819 | if (oso) { | |
820 | if (!os) { | |
821 | struct ofport *ofport; | |
822 | unsigned int odp_port; | |
823 | ||
824 | os = ofproto->sflow = ofproto_sflow_create(ofproto->dpif); | |
825 | refresh_port_groups(ofproto); | |
826 | PORT_ARRAY_FOR_EACH (ofport, &ofproto->ports, odp_port) { | |
827 | ofproto_sflow_add_port(os, odp_port, | |
828 | netdev_get_name(ofport->netdev)); | |
829 | } | |
830 | } | |
831 | ofproto_sflow_set_options(os, oso); | |
832 | } else { | |
833 | ofproto_sflow_destroy(os); | |
834 | ofproto->sflow = NULL; | |
835 | } | |
836 | } | |
837 | ||
064af421 | 838 | int |
67a4917b | 839 | ofproto_set_stp(struct ofproto *ofproto OVS_UNUSED, bool enable_stp) |
064af421 BP |
840 | { |
841 | /* XXX */ | |
842 | if (enable_stp) { | |
843 | VLOG_WARN("STP is not yet implemented"); | |
844 | return EINVAL; | |
845 | } else { | |
846 | return 0; | |
847 | } | |
848 | } | |
849 | ||
064af421 BP |
850 | uint64_t |
851 | ofproto_get_datapath_id(const struct ofproto *ofproto) | |
852 | { | |
853 | return ofproto->datapath_id; | |
854 | } | |
855 | ||
76ce9432 BP |
856 | bool |
857 | ofproto_has_controller(const struct ofproto *ofproto) | |
064af421 | 858 | { |
76ce9432 | 859 | return !hmap_is_empty(&ofproto->controllers); |
064af421 BP |
860 | } |
861 | ||
862 | void | |
863 | ofproto_get_listeners(const struct ofproto *ofproto, struct svec *listeners) | |
864 | { | |
865 | size_t i; | |
866 | ||
867 | for (i = 0; i < ofproto->n_listeners; i++) { | |
868 | svec_add(listeners, pvconn_get_name(ofproto->listeners[i])); | |
869 | } | |
870 | } | |
871 | ||
872 | void | |
873 | ofproto_get_snoops(const struct ofproto *ofproto, struct svec *snoops) | |
874 | { | |
875 | size_t i; | |
876 | ||
877 | for (i = 0; i < ofproto->n_snoops; i++) { | |
878 | svec_add(snoops, pvconn_get_name(ofproto->snoops[i])); | |
879 | } | |
880 | } | |
881 | ||
882 | void | |
883 | ofproto_destroy(struct ofproto *p) | |
884 | { | |
885 | struct ofconn *ofconn, *next_ofconn; | |
886 | struct ofport *ofport; | |
887 | unsigned int port_no; | |
888 | size_t i; | |
889 | ||
890 | if (!p) { | |
891 | return; | |
892 | } | |
893 | ||
f7de2cdf | 894 | /* Destroy fail-open and in-band early, since they touch the classifier. */ |
79c9f2ee BP |
895 | fail_open_destroy(p->fail_open); |
896 | p->fail_open = NULL; | |
897 | ||
898 | in_band_destroy(p->in_band); | |
899 | p->in_band = NULL; | |
917e50e1 | 900 | free(p->extra_in_band_remotes); |
2f6d3445 | 901 | |
064af421 BP |
902 | ofproto_flush_flows(p); |
903 | classifier_destroy(&p->cls); | |
904 | ||
905 | LIST_FOR_EACH_SAFE (ofconn, next_ofconn, struct ofconn, node, | |
906 | &p->all_conns) { | |
c475ae67 | 907 | ofconn_destroy(ofconn); |
064af421 | 908 | } |
76ce9432 | 909 | hmap_destroy(&p->controllers); |
064af421 | 910 | |
c228a364 | 911 | dpif_close(p->dpif); |
e9e28be3 | 912 | netdev_monitor_destroy(p->netdev_monitor); |
064af421 BP |
913 | PORT_ARRAY_FOR_EACH (ofport, &p->ports, port_no) { |
914 | ofport_free(ofport); | |
915 | } | |
916 | shash_destroy(&p->port_by_name); | |
917 | ||
918 | switch_status_destroy(p->switch_status); | |
064af421 | 919 | netflow_destroy(p->netflow); |
72b06300 | 920 | ofproto_sflow_destroy(p->sflow); |
064af421 | 921 | |
064af421 BP |
922 | for (i = 0; i < p->n_listeners; i++) { |
923 | pvconn_close(p->listeners[i]); | |
924 | } | |
925 | free(p->listeners); | |
926 | ||
927 | for (i = 0; i < p->n_snoops; i++) { | |
928 | pvconn_close(p->snoops[i]); | |
929 | } | |
930 | free(p->snoops); | |
931 | ||
932 | mac_learning_destroy(p->ml); | |
933 | ||
5a719c38 JP |
934 | free(p->mfr_desc); |
935 | free(p->hw_desc); | |
936 | free(p->sw_desc); | |
937 | free(p->serial_desc); | |
cb871ae0 JP |
938 | free(p->dp_desc); |
939 | ||
3b917492 BP |
940 | port_array_destroy(&p->ports); |
941 | ||
064af421 BP |
942 | free(p); |
943 | } | |
944 | ||
945 | int | |
946 | ofproto_run(struct ofproto *p) | |
947 | { | |
948 | int error = ofproto_run1(p); | |
949 | if (!error) { | |
950 | error = ofproto_run2(p, false); | |
951 | } | |
952 | return error; | |
953 | } | |
954 | ||
e9e28be3 BP |
955 | static void |
956 | process_port_change(struct ofproto *ofproto, int error, char *devname) | |
957 | { | |
958 | if (error == ENOBUFS) { | |
959 | reinit_ports(ofproto); | |
960 | } else if (!error) { | |
961 | update_port(ofproto, devname); | |
962 | free(devname); | |
963 | } | |
964 | } | |
965 | ||
76ce9432 BP |
966 | /* One of ofproto's "snoop" pvconns has accepted a new connection on 'vconn'. |
967 | * Connects this vconn to a controller. */ | |
968 | static void | |
969 | add_snooper(struct ofproto *ofproto, struct vconn *vconn) | |
970 | { | |
971 | struct ofconn *ofconn; | |
972 | ||
973 | /* Arbitrarily pick the first controller in the list for monitoring. We | |
974 | * could do something smarter or more flexible later, if it ever proves | |
975 | * useful. */ | |
976 | LIST_FOR_EACH (ofconn, struct ofconn, node, &ofproto->all_conns) { | |
977 | if (ofconn->type == OFCONN_CONTROLLER) { | |
978 | rconn_add_monitor(ofconn->rconn, vconn); | |
979 | return; | |
980 | } | |
981 | ||
982 | } | |
983 | VLOG_INFO_RL(&rl, "no controller connection to monitor"); | |
984 | vconn_close(vconn); | |
985 | } | |
986 | ||
064af421 BP |
987 | int |
988 | ofproto_run1(struct ofproto *p) | |
989 | { | |
990 | struct ofconn *ofconn, *next_ofconn; | |
991 | char *devname; | |
992 | int error; | |
993 | int i; | |
994 | ||
149f577a JG |
995 | if (shash_is_empty(&p->port_by_name)) { |
996 | init_ports(p); | |
997 | } | |
998 | ||
064af421 BP |
999 | for (i = 0; i < 50; i++) { |
1000 | struct ofpbuf *buf; | |
1001 | int error; | |
1002 | ||
c228a364 | 1003 | error = dpif_recv(p->dpif, &buf); |
064af421 BP |
1004 | if (error) { |
1005 | if (error == ENODEV) { | |
1006 | /* Someone destroyed the datapath behind our back. The caller | |
1007 | * better destroy us and give up, because we're just going to | |
1008 | * spin from here on out. */ | |
39a559f2 BP |
1009 | static struct vlog_rate_limit rl2 = VLOG_RATE_LIMIT_INIT(1, 5); |
1010 | VLOG_ERR_RL(&rl2, "%s: datapath was destroyed externally", | |
c228a364 | 1011 | dpif_name(p->dpif)); |
064af421 BP |
1012 | return ENODEV; |
1013 | } | |
1014 | break; | |
1015 | } | |
1016 | ||
1017 | handle_odp_msg(p, buf); | |
1018 | } | |
1019 | ||
e9e28be3 BP |
1020 | while ((error = dpif_port_poll(p->dpif, &devname)) != EAGAIN) { |
1021 | process_port_change(p, error, devname); | |
1022 | } | |
1023 | while ((error = netdev_monitor_poll(p->netdev_monitor, | |
1024 | &devname)) != EAGAIN) { | |
1025 | process_port_change(p, error, devname); | |
064af421 BP |
1026 | } |
1027 | ||
1028 | if (p->in_band) { | |
d2ede7bc BP |
1029 | if (time_msec() >= p->next_in_band_update) { |
1030 | update_in_band_remotes(p); | |
1031 | } | |
064af421 BP |
1032 | in_band_run(p->in_band); |
1033 | } | |
064af421 BP |
1034 | |
1035 | LIST_FOR_EACH_SAFE (ofconn, next_ofconn, struct ofconn, node, | |
1036 | &p->all_conns) { | |
1037 | ofconn_run(ofconn, p); | |
1038 | } | |
1039 | ||
7778bd15 BP |
1040 | /* Fail-open maintenance. Do this after processing the ofconns since |
1041 | * fail-open checks the status of the controller rconn. */ | |
1042 | if (p->fail_open) { | |
1043 | fail_open_run(p->fail_open); | |
1044 | } | |
1045 | ||
064af421 BP |
1046 | for (i = 0; i < p->n_listeners; i++) { |
1047 | struct vconn *vconn; | |
1048 | int retval; | |
1049 | ||
1050 | retval = pvconn_accept(p->listeners[i], OFP_VERSION, &vconn); | |
1051 | if (!retval) { | |
76ce9432 BP |
1052 | ofconn_create(p, rconn_new_from_vconn("passive", vconn), |
1053 | OFCONN_TRANSIENT); | |
064af421 BP |
1054 | } else if (retval != EAGAIN) { |
1055 | VLOG_WARN_RL(&rl, "accept failed (%s)", strerror(retval)); | |
1056 | } | |
1057 | } | |
1058 | ||
1059 | for (i = 0; i < p->n_snoops; i++) { | |
1060 | struct vconn *vconn; | |
1061 | int retval; | |
1062 | ||
1063 | retval = pvconn_accept(p->snoops[i], OFP_VERSION, &vconn); | |
1064 | if (!retval) { | |
76ce9432 | 1065 | add_snooper(p, vconn); |
064af421 BP |
1066 | } else if (retval != EAGAIN) { |
1067 | VLOG_WARN_RL(&rl, "accept failed (%s)", strerror(retval)); | |
1068 | } | |
1069 | } | |
1070 | ||
1071 | if (time_msec() >= p->next_expiration) { | |
1072 | COVERAGE_INC(ofproto_expiration); | |
1073 | p->next_expiration = time_msec() + 1000; | |
1074 | update_used(p); | |
1075 | ||
1076 | classifier_for_each(&p->cls, CLS_INC_ALL, expire_rule, p); | |
1077 | ||
1078 | /* Let the hook know that we're at a stable point: all outstanding data | |
1079 | * in existing flows has been accounted to the account_cb. Thus, the | |
1080 | * hook can now reasonably do operations that depend on having accurate | |
1081 | * flow volume accounting (currently, that's just bond rebalancing). */ | |
1082 | if (p->ofhooks->account_checkpoint_cb) { | |
1083 | p->ofhooks->account_checkpoint_cb(p->aux); | |
1084 | } | |
1085 | } | |
1086 | ||
1087 | if (p->netflow) { | |
1088 | netflow_run(p->netflow); | |
1089 | } | |
72b06300 BP |
1090 | if (p->sflow) { |
1091 | ofproto_sflow_run(p->sflow); | |
1092 | } | |
064af421 BP |
1093 | |
1094 | return 0; | |
1095 | } | |
1096 | ||
1097 | struct revalidate_cbdata { | |
1098 | struct ofproto *ofproto; | |
1099 | bool revalidate_all; /* Revalidate all exact-match rules? */ | |
1100 | bool revalidate_subrules; /* Revalidate all exact-match subrules? */ | |
1101 | struct tag_set revalidate_set; /* Set of tags to revalidate. */ | |
1102 | }; | |
1103 | ||
1104 | int | |
1105 | ofproto_run2(struct ofproto *p, bool revalidate_all) | |
1106 | { | |
1107 | if (p->need_revalidate || revalidate_all | |
1108 | || !tag_set_is_empty(&p->revalidate_set)) { | |
1109 | struct revalidate_cbdata cbdata; | |
1110 | cbdata.ofproto = p; | |
1111 | cbdata.revalidate_all = revalidate_all; | |
1112 | cbdata.revalidate_subrules = p->need_revalidate; | |
1113 | cbdata.revalidate_set = p->revalidate_set; | |
1114 | tag_set_init(&p->revalidate_set); | |
1115 | COVERAGE_INC(ofproto_revalidate); | |
1116 | classifier_for_each(&p->cls, CLS_INC_EXACT, revalidate_cb, &cbdata); | |
1117 | p->need_revalidate = false; | |
1118 | } | |
1119 | ||
1120 | return 0; | |
1121 | } | |
1122 | ||
1123 | void | |
1124 | ofproto_wait(struct ofproto *p) | |
1125 | { | |
1126 | struct ofconn *ofconn; | |
1127 | size_t i; | |
1128 | ||
c228a364 | 1129 | dpif_recv_wait(p->dpif); |
e9e28be3 BP |
1130 | dpif_port_poll_wait(p->dpif); |
1131 | netdev_monitor_poll_wait(p->netdev_monitor); | |
064af421 BP |
1132 | LIST_FOR_EACH (ofconn, struct ofconn, node, &p->all_conns) { |
1133 | ofconn_wait(ofconn); | |
1134 | } | |
1135 | if (p->in_band) { | |
d2ede7bc | 1136 | poll_timer_wait(p->next_in_band_update - time_msec()); |
064af421 BP |
1137 | in_band_wait(p->in_band); |
1138 | } | |
064af421 BP |
1139 | if (p->fail_open) { |
1140 | fail_open_wait(p->fail_open); | |
1141 | } | |
72b06300 BP |
1142 | if (p->sflow) { |
1143 | ofproto_sflow_wait(p->sflow); | |
1144 | } | |
064af421 BP |
1145 | if (!tag_set_is_empty(&p->revalidate_set)) { |
1146 | poll_immediate_wake(); | |
1147 | } | |
1148 | if (p->need_revalidate) { | |
1149 | /* Shouldn't happen, but if it does just go around again. */ | |
1150 | VLOG_DBG_RL(&rl, "need revalidate in ofproto_wait_cb()"); | |
1151 | poll_immediate_wake(); | |
1152 | } else if (p->next_expiration != LLONG_MAX) { | |
1153 | poll_timer_wait(p->next_expiration - time_msec()); | |
1154 | } | |
1155 | for (i = 0; i < p->n_listeners; i++) { | |
1156 | pvconn_wait(p->listeners[i]); | |
1157 | } | |
1158 | for (i = 0; i < p->n_snoops; i++) { | |
1159 | pvconn_wait(p->snoops[i]); | |
1160 | } | |
1161 | } | |
1162 | ||
1163 | void | |
1164 | ofproto_revalidate(struct ofproto *ofproto, tag_type tag) | |
1165 | { | |
1166 | tag_set_add(&ofproto->revalidate_set, tag); | |
1167 | } | |
1168 | ||
1169 | struct tag_set * | |
1170 | ofproto_get_revalidate_set(struct ofproto *ofproto) | |
1171 | { | |
1172 | return &ofproto->revalidate_set; | |
1173 | } | |
1174 | ||
1175 | bool | |
1176 | ofproto_is_alive(const struct ofproto *p) | |
1177 | { | |
76ce9432 | 1178 | return !hmap_is_empty(&p->controllers); |
064af421 BP |
1179 | } |
1180 | ||
1181 | int | |
1182 | ofproto_send_packet(struct ofproto *p, const flow_t *flow, | |
1183 | const union ofp_action *actions, size_t n_actions, | |
1184 | const struct ofpbuf *packet) | |
1185 | { | |
1186 | struct odp_actions odp_actions; | |
1187 | int error; | |
1188 | ||
1189 | error = xlate_actions(actions, n_actions, flow, p, packet, &odp_actions, | |
6a07af36 | 1190 | NULL, NULL, NULL); |
064af421 BP |
1191 | if (error) { |
1192 | return error; | |
1193 | } | |
1194 | ||
1195 | /* XXX Should we translate the dpif_execute() errno value into an OpenFlow | |
1196 | * error code? */ | |
c228a364 | 1197 | dpif_execute(p->dpif, flow->in_port, odp_actions.actions, |
064af421 BP |
1198 | odp_actions.n_actions, packet); |
1199 | return 0; | |
1200 | } | |
1201 | ||
1202 | void | |
1203 | ofproto_add_flow(struct ofproto *p, | |
1204 | const flow_t *flow, uint32_t wildcards, unsigned int priority, | |
1205 | const union ofp_action *actions, size_t n_actions, | |
1206 | int idle_timeout) | |
1207 | { | |
1208 | struct rule *rule; | |
0193b2af | 1209 | rule = rule_create(p, NULL, actions, n_actions, |
ca069229 | 1210 | idle_timeout >= 0 ? idle_timeout : 5 /* XXX */, |
39997502 | 1211 | 0, 0, false); |
659586ef | 1212 | cls_rule_from_flow(flow, wildcards, priority, &rule->cr); |
064af421 BP |
1213 | rule_insert(p, rule, NULL, 0); |
1214 | } | |
1215 | ||
1216 | void | |
1217 | ofproto_delete_flow(struct ofproto *ofproto, const flow_t *flow, | |
1218 | uint32_t wildcards, unsigned int priority) | |
1219 | { | |
1220 | struct rule *rule; | |
1221 | ||
1222 | rule = rule_from_cls_rule(classifier_find_rule_exactly(&ofproto->cls, | |
1223 | flow, wildcards, | |
1224 | priority)); | |
1225 | if (rule) { | |
1226 | rule_remove(ofproto, rule); | |
1227 | } | |
1228 | } | |
1229 | ||
1230 | static void | |
1231 | destroy_rule(struct cls_rule *rule_, void *ofproto_) | |
1232 | { | |
1233 | struct rule *rule = rule_from_cls_rule(rule_); | |
1234 | struct ofproto *ofproto = ofproto_; | |
1235 | ||
1236 | /* Mark the flow as not installed, even though it might really be | |
1237 | * installed, so that rule_remove() doesn't bother trying to uninstall it. | |
1238 | * There is no point in uninstalling it individually since we are about to | |
1239 | * blow away all the flows with dpif_flow_flush(). */ | |
1240 | rule->installed = false; | |
1241 | ||
1242 | rule_remove(ofproto, rule); | |
1243 | } | |
1244 | ||
1245 | void | |
1246 | ofproto_flush_flows(struct ofproto *ofproto) | |
1247 | { | |
1248 | COVERAGE_INC(ofproto_flush); | |
1249 | classifier_for_each(&ofproto->cls, CLS_INC_ALL, destroy_rule, ofproto); | |
c228a364 | 1250 | dpif_flow_flush(ofproto->dpif); |
064af421 BP |
1251 | if (ofproto->in_band) { |
1252 | in_band_flushed(ofproto->in_band); | |
1253 | } | |
1254 | if (ofproto->fail_open) { | |
1255 | fail_open_flushed(ofproto->fail_open); | |
1256 | } | |
1257 | } | |
1258 | \f | |
1259 | static void | |
1260 | reinit_ports(struct ofproto *p) | |
1261 | { | |
1262 | struct svec devnames; | |
1263 | struct ofport *ofport; | |
1264 | unsigned int port_no; | |
1265 | struct odp_port *odp_ports; | |
1266 | size_t n_odp_ports; | |
1267 | size_t i; | |
1268 | ||
1269 | svec_init(&devnames); | |
1270 | PORT_ARRAY_FOR_EACH (ofport, &p->ports, port_no) { | |
1271 | svec_add (&devnames, (char *) ofport->opp.name); | |
1272 | } | |
c228a364 | 1273 | dpif_port_list(p->dpif, &odp_ports, &n_odp_ports); |
064af421 BP |
1274 | for (i = 0; i < n_odp_ports; i++) { |
1275 | svec_add (&devnames, odp_ports[i].devname); | |
1276 | } | |
1277 | free(odp_ports); | |
1278 | ||
1279 | svec_sort_unique(&devnames); | |
1280 | for (i = 0; i < devnames.n; i++) { | |
1281 | update_port(p, devnames.names[i]); | |
1282 | } | |
1283 | svec_destroy(&devnames); | |
1284 | } | |
1285 | ||
72b06300 | 1286 | static size_t |
064af421 BP |
1287 | refresh_port_group(struct ofproto *p, unsigned int group) |
1288 | { | |
1289 | uint16_t *ports; | |
1290 | size_t n_ports; | |
1291 | struct ofport *port; | |
1292 | unsigned int port_no; | |
1293 | ||
1294 | assert(group == DP_GROUP_ALL || group == DP_GROUP_FLOOD); | |
1295 | ||
1296 | ports = xmalloc(port_array_count(&p->ports) * sizeof *ports); | |
1297 | n_ports = 0; | |
1298 | PORT_ARRAY_FOR_EACH (port, &p->ports, port_no) { | |
1299 | if (group == DP_GROUP_ALL || !(port->opp.config & OFPPC_NO_FLOOD)) { | |
1300 | ports[n_ports++] = port_no; | |
1301 | } | |
1302 | } | |
c228a364 | 1303 | dpif_port_group_set(p->dpif, group, ports, n_ports); |
064af421 | 1304 | free(ports); |
72b06300 BP |
1305 | |
1306 | return n_ports; | |
064af421 BP |
1307 | } |
1308 | ||
1309 | static void | |
1310 | refresh_port_groups(struct ofproto *p) | |
1311 | { | |
72b06300 BP |
1312 | size_t n_flood = refresh_port_group(p, DP_GROUP_FLOOD); |
1313 | size_t n_all = refresh_port_group(p, DP_GROUP_ALL); | |
1314 | if (p->sflow) { | |
1315 | ofproto_sflow_set_group_sizes(p->sflow, n_flood, n_all); | |
1316 | } | |
064af421 BP |
1317 | } |
1318 | ||
1319 | static struct ofport * | |
1320 | make_ofport(const struct odp_port *odp_port) | |
1321 | { | |
149f577a | 1322 | struct netdev_options netdev_options; |
064af421 BP |
1323 | enum netdev_flags flags; |
1324 | struct ofport *ofport; | |
1325 | struct netdev *netdev; | |
1326 | bool carrier; | |
1327 | int error; | |
1328 | ||
149f577a JG |
1329 | memset(&netdev_options, 0, sizeof netdev_options); |
1330 | netdev_options.name = odp_port->devname; | |
1331 | netdev_options.ethertype = NETDEV_ETH_TYPE_NONE; | |
1332 | netdev_options.may_open = true; | |
1333 | ||
1334 | error = netdev_open(&netdev_options, &netdev); | |
064af421 BP |
1335 | if (error) { |
1336 | VLOG_WARN_RL(&rl, "ignoring port %s (%"PRIu16") because netdev %s " | |
1337 | "cannot be opened (%s)", | |
1338 | odp_port->devname, odp_port->port, | |
1339 | odp_port->devname, strerror(error)); | |
1340 | return NULL; | |
1341 | } | |
1342 | ||
1343 | ofport = xmalloc(sizeof *ofport); | |
1344 | ofport->netdev = netdev; | |
1345 | ofport->opp.port_no = odp_port_to_ofp_port(odp_port->port); | |
80992a35 | 1346 | netdev_get_etheraddr(netdev, ofport->opp.hw_addr); |
064af421 BP |
1347 | memcpy(ofport->opp.name, odp_port->devname, |
1348 | MIN(sizeof ofport->opp.name, sizeof odp_port->devname)); | |
1349 | ofport->opp.name[sizeof ofport->opp.name - 1] = '\0'; | |
1350 | ||
1351 | netdev_get_flags(netdev, &flags); | |
1352 | ofport->opp.config = flags & NETDEV_UP ? 0 : OFPPC_PORT_DOWN; | |
1353 | ||
1354 | netdev_get_carrier(netdev, &carrier); | |
1355 | ofport->opp.state = carrier ? 0 : OFPPS_LINK_DOWN; | |
1356 | ||
1357 | netdev_get_features(netdev, | |
1358 | &ofport->opp.curr, &ofport->opp.advertised, | |
1359 | &ofport->opp.supported, &ofport->opp.peer); | |
1360 | return ofport; | |
1361 | } | |
1362 | ||
1363 | static bool | |
1364 | ofport_conflicts(const struct ofproto *p, const struct odp_port *odp_port) | |
1365 | { | |
1366 | if (port_array_get(&p->ports, odp_port->port)) { | |
1367 | VLOG_WARN_RL(&rl, "ignoring duplicate port %"PRIu16" in datapath", | |
1368 | odp_port->port); | |
1369 | return true; | |
1370 | } else if (shash_find(&p->port_by_name, odp_port->devname)) { | |
1371 | VLOG_WARN_RL(&rl, "ignoring duplicate device %s in datapath", | |
1372 | odp_port->devname); | |
1373 | return true; | |
1374 | } else { | |
1375 | return false; | |
1376 | } | |
1377 | } | |
1378 | ||
1379 | static int | |
1380 | ofport_equal(const struct ofport *a_, const struct ofport *b_) | |
1381 | { | |
1382 | const struct ofp_phy_port *a = &a_->opp; | |
1383 | const struct ofp_phy_port *b = &b_->opp; | |
1384 | ||
1385 | BUILD_ASSERT_DECL(sizeof *a == 48); /* Detect ofp_phy_port changes. */ | |
1386 | return (a->port_no == b->port_no | |
1387 | && !memcmp(a->hw_addr, b->hw_addr, sizeof a->hw_addr) | |
1388 | && !strcmp((char *) a->name, (char *) b->name) | |
1389 | && a->state == b->state | |
1390 | && a->config == b->config | |
1391 | && a->curr == b->curr | |
1392 | && a->advertised == b->advertised | |
1393 | && a->supported == b->supported | |
1394 | && a->peer == b->peer); | |
1395 | } | |
1396 | ||
1397 | static void | |
1398 | send_port_status(struct ofproto *p, const struct ofport *ofport, | |
1399 | uint8_t reason) | |
1400 | { | |
1401 | /* XXX Should limit the number of queued port status change messages. */ | |
1402 | struct ofconn *ofconn; | |
1403 | LIST_FOR_EACH (ofconn, struct ofconn, node, &p->all_conns) { | |
1404 | struct ofp_port_status *ops; | |
1405 | struct ofpbuf *b; | |
1406 | ||
c91248b3 | 1407 | if (!ofconn_receives_async_msgs(ofconn)) { |
9deba63b BP |
1408 | continue; |
1409 | } | |
1410 | ||
064af421 BP |
1411 | ops = make_openflow_xid(sizeof *ops, OFPT_PORT_STATUS, 0, &b); |
1412 | ops->reason = reason; | |
1413 | ops->desc = ofport->opp; | |
1414 | hton_ofp_phy_port(&ops->desc); | |
1415 | queue_tx(b, ofconn, NULL); | |
1416 | } | |
1417 | if (p->ofhooks->port_changed_cb) { | |
1418 | p->ofhooks->port_changed_cb(reason, &ofport->opp, p->aux); | |
1419 | } | |
1420 | } | |
1421 | ||
1422 | static void | |
1423 | ofport_install(struct ofproto *p, struct ofport *ofport) | |
1424 | { | |
72b06300 BP |
1425 | uint16_t odp_port = ofp_port_to_odp_port(ofport->opp.port_no); |
1426 | const char *netdev_name = (const char *) ofport->opp.name; | |
1427 | ||
e9e28be3 | 1428 | netdev_monitor_add(p->netdev_monitor, ofport->netdev); |
72b06300 BP |
1429 | port_array_set(&p->ports, odp_port, ofport); |
1430 | shash_add(&p->port_by_name, netdev_name, ofport); | |
1431 | if (p->sflow) { | |
1432 | ofproto_sflow_add_port(p->sflow, odp_port, netdev_name); | |
1433 | } | |
064af421 BP |
1434 | } |
1435 | ||
1436 | static void | |
1437 | ofport_remove(struct ofproto *p, struct ofport *ofport) | |
1438 | { | |
72b06300 BP |
1439 | uint16_t odp_port = ofp_port_to_odp_port(ofport->opp.port_no); |
1440 | ||
e9e28be3 | 1441 | netdev_monitor_remove(p->netdev_monitor, ofport->netdev); |
72b06300 | 1442 | port_array_set(&p->ports, odp_port, NULL); |
064af421 BP |
1443 | shash_delete(&p->port_by_name, |
1444 | shash_find(&p->port_by_name, (char *) ofport->opp.name)); | |
72b06300 BP |
1445 | if (p->sflow) { |
1446 | ofproto_sflow_del_port(p->sflow, odp_port); | |
1447 | } | |
064af421 BP |
1448 | } |
1449 | ||
1450 | static void | |
1451 | ofport_free(struct ofport *ofport) | |
1452 | { | |
1453 | if (ofport) { | |
1454 | netdev_close(ofport->netdev); | |
1455 | free(ofport); | |
1456 | } | |
1457 | } | |
1458 | ||
1459 | static void | |
1460 | update_port(struct ofproto *p, const char *devname) | |
1461 | { | |
1462 | struct odp_port odp_port; | |
c874dc6d BP |
1463 | struct ofport *old_ofport; |
1464 | struct ofport *new_ofport; | |
064af421 BP |
1465 | int error; |
1466 | ||
1467 | COVERAGE_INC(ofproto_update_port); | |
c874dc6d BP |
1468 | |
1469 | /* Query the datapath for port information. */ | |
c228a364 | 1470 | error = dpif_port_query_by_name(p->dpif, devname, &odp_port); |
064af421 | 1471 | |
c874dc6d BP |
1472 | /* Find the old ofport. */ |
1473 | old_ofport = shash_find_data(&p->port_by_name, devname); | |
1474 | if (!error) { | |
1475 | if (!old_ofport) { | |
1476 | /* There's no port named 'devname' but there might be a port with | |
1477 | * the same port number. This could happen if a port is deleted | |
1478 | * and then a new one added in its place very quickly, or if a port | |
1479 | * is renamed. In the former case we want to send an OFPPR_DELETE | |
1480 | * and an OFPPR_ADD, and in the latter case we want to send a | |
1481 | * single OFPPR_MODIFY. We can distinguish the cases by comparing | |
1482 | * the old port's ifindex against the new port, or perhaps less | |
1483 | * reliably but more portably by comparing the old port's MAC | |
1484 | * against the new port's MAC. However, this code isn't that smart | |
1485 | * and always sends an OFPPR_MODIFY (XXX). */ | |
1486 | old_ofport = port_array_get(&p->ports, odp_port.port); | |
064af421 | 1487 | } |
c874dc6d | 1488 | } else if (error != ENOENT && error != ENODEV) { |
064af421 BP |
1489 | VLOG_WARN_RL(&rl, "dpif_port_query_by_name returned unexpected error " |
1490 | "%s", strerror(error)); | |
1491 | return; | |
1492 | } | |
c874dc6d BP |
1493 | |
1494 | /* Create a new ofport. */ | |
1495 | new_ofport = !error ? make_ofport(&odp_port) : NULL; | |
1496 | ||
1497 | /* Eliminate a few pathological cases. */ | |
1498 | if (!old_ofport && !new_ofport) { | |
1499 | return; | |
1500 | } else if (old_ofport && new_ofport) { | |
1501 | /* Most of the 'config' bits are OpenFlow soft state, but | |
1502 | * OFPPC_PORT_DOWN is maintained the kernel. So transfer the OpenFlow | |
1503 | * bits from old_ofport. (make_ofport() only sets OFPPC_PORT_DOWN and | |
1504 | * leaves the other bits 0.) */ | |
1505 | new_ofport->opp.config |= old_ofport->opp.config & ~OFPPC_PORT_DOWN; | |
1506 | ||
1507 | if (ofport_equal(old_ofport, new_ofport)) { | |
1508 | /* False alarm--no change. */ | |
1509 | ofport_free(new_ofport); | |
1510 | return; | |
1511 | } | |
1512 | } | |
1513 | ||
1514 | /* Now deal with the normal cases. */ | |
1515 | if (old_ofport) { | |
1516 | ofport_remove(p, old_ofport); | |
1517 | } | |
1518 | if (new_ofport) { | |
1519 | ofport_install(p, new_ofport); | |
1520 | } | |
1521 | send_port_status(p, new_ofport ? new_ofport : old_ofport, | |
1522 | (!old_ofport ? OFPPR_ADD | |
1523 | : !new_ofport ? OFPPR_DELETE | |
1524 | : OFPPR_MODIFY)); | |
1525 | ofport_free(old_ofport); | |
1526 | ||
1527 | /* Update port groups. */ | |
064af421 BP |
1528 | refresh_port_groups(p); |
1529 | } | |
1530 | ||
1531 | static int | |
1532 | init_ports(struct ofproto *p) | |
1533 | { | |
1534 | struct odp_port *ports; | |
1535 | size_t n_ports; | |
1536 | size_t i; | |
1537 | int error; | |
1538 | ||
c228a364 | 1539 | error = dpif_port_list(p->dpif, &ports, &n_ports); |
064af421 BP |
1540 | if (error) { |
1541 | return error; | |
1542 | } | |
1543 | ||
1544 | for (i = 0; i < n_ports; i++) { | |
1545 | const struct odp_port *odp_port = &ports[i]; | |
1546 | if (!ofport_conflicts(p, odp_port)) { | |
1547 | struct ofport *ofport = make_ofport(odp_port); | |
1548 | if (ofport) { | |
1549 | ofport_install(p, ofport); | |
1550 | } | |
1551 | } | |
1552 | } | |
1553 | free(ports); | |
1554 | refresh_port_groups(p); | |
1555 | return 0; | |
1556 | } | |
1557 | \f | |
1558 | static struct ofconn * | |
76ce9432 | 1559 | ofconn_create(struct ofproto *p, struct rconn *rconn, enum ofconn_type type) |
064af421 | 1560 | { |
76ce9432 BP |
1561 | struct ofconn *ofconn = xzalloc(sizeof *ofconn); |
1562 | ofconn->ofproto = p; | |
064af421 BP |
1563 | list_push_back(&p->all_conns, &ofconn->node); |
1564 | ofconn->rconn = rconn; | |
76ce9432 | 1565 | ofconn->type = type; |
9deba63b | 1566 | ofconn->role = NX_ROLE_OTHER; |
76ce9432 | 1567 | ofconn->packet_in_counter = rconn_packet_counter_create (); |
064af421 | 1568 | ofconn->pktbuf = NULL; |
064af421 | 1569 | ofconn->miss_send_len = 0; |
064af421 BP |
1570 | ofconn->reply_counter = rconn_packet_counter_create (); |
1571 | return ofconn; | |
1572 | } | |
1573 | ||
1574 | static void | |
c475ae67 | 1575 | ofconn_destroy(struct ofconn *ofconn) |
064af421 | 1576 | { |
76ce9432 BP |
1577 | if (ofconn->type == OFCONN_CONTROLLER) { |
1578 | hmap_remove(&ofconn->ofproto->controllers, &ofconn->hmap_node); | |
1579 | } | |
1580 | discovery_destroy(ofconn->discovery); | |
1581 | ||
064af421 | 1582 | list_remove(&ofconn->node); |
76ce9432 | 1583 | switch_status_unregister(ofconn->ss); |
064af421 BP |
1584 | rconn_destroy(ofconn->rconn); |
1585 | rconn_packet_counter_destroy(ofconn->packet_in_counter); | |
1586 | rconn_packet_counter_destroy(ofconn->reply_counter); | |
1587 | pktbuf_destroy(ofconn->pktbuf); | |
1588 | free(ofconn); | |
1589 | } | |
1590 | ||
1591 | static void | |
1592 | ofconn_run(struct ofconn *ofconn, struct ofproto *p) | |
1593 | { | |
1594 | int iteration; | |
76ce9432 BP |
1595 | size_t i; |
1596 | ||
1597 | if (ofconn->discovery) { | |
1598 | char *controller_name; | |
1599 | if (rconn_is_connectivity_questionable(ofconn->rconn)) { | |
1600 | discovery_question_connectivity(ofconn->discovery); | |
1601 | } | |
1602 | if (discovery_run(ofconn->discovery, &controller_name)) { | |
1603 | if (controller_name) { | |
1604 | rconn_connect(ofconn->rconn, controller_name); | |
1605 | } else { | |
1606 | rconn_disconnect(ofconn->rconn); | |
1607 | } | |
1608 | } | |
1609 | } | |
1610 | ||
1611 | for (i = 0; i < N_SCHEDULERS; i++) { | |
1612 | pinsched_run(ofconn->schedulers[i], do_send_packet_in, ofconn); | |
1613 | } | |
064af421 BP |
1614 | |
1615 | rconn_run(ofconn->rconn); | |
1616 | ||
1617 | if (rconn_packet_counter_read (ofconn->reply_counter) < OFCONN_REPLY_MAX) { | |
1618 | /* Limit the number of iterations to prevent other tasks from | |
1619 | * starving. */ | |
1620 | for (iteration = 0; iteration < 50; iteration++) { | |
1621 | struct ofpbuf *of_msg = rconn_recv(ofconn->rconn); | |
1622 | if (!of_msg) { | |
1623 | break; | |
1624 | } | |
7778bd15 BP |
1625 | if (p->fail_open) { |
1626 | fail_open_maybe_recover(p->fail_open); | |
1627 | } | |
064af421 BP |
1628 | handle_openflow(ofconn, p, of_msg); |
1629 | ofpbuf_delete(of_msg); | |
1630 | } | |
1631 | } | |
1632 | ||
76ce9432 | 1633 | if (!ofconn->discovery && !rconn_is_alive(ofconn->rconn)) { |
c475ae67 | 1634 | ofconn_destroy(ofconn); |
064af421 BP |
1635 | } |
1636 | } | |
1637 | ||
1638 | static void | |
1639 | ofconn_wait(struct ofconn *ofconn) | |
1640 | { | |
76ce9432 BP |
1641 | int i; |
1642 | ||
1643 | if (ofconn->discovery) { | |
1644 | discovery_wait(ofconn->discovery); | |
1645 | } | |
1646 | for (i = 0; i < N_SCHEDULERS; i++) { | |
1647 | pinsched_wait(ofconn->schedulers[i]); | |
1648 | } | |
064af421 BP |
1649 | rconn_run_wait(ofconn->rconn); |
1650 | if (rconn_packet_counter_read (ofconn->reply_counter) < OFCONN_REPLY_MAX) { | |
1651 | rconn_recv_wait(ofconn->rconn); | |
1652 | } else { | |
1653 | COVERAGE_INC(ofproto_ofconn_stuck); | |
1654 | } | |
1655 | } | |
c91248b3 BP |
1656 | |
1657 | /* Returns true if 'ofconn' should receive asynchronous messages. */ | |
1658 | static bool | |
1659 | ofconn_receives_async_msgs(const struct ofconn *ofconn) | |
1660 | { | |
1661 | if (ofconn->type == OFCONN_CONTROLLER) { | |
1662 | /* Ordinary controllers always get asynchronous messages unless they | |
1663 | * have configured themselves as "slaves". */ | |
1664 | return ofconn->role != NX_ROLE_SLAVE; | |
1665 | } else { | |
1666 | /* Transient connections don't get asynchronous messages unless they | |
1667 | * have explicitly asked for them by setting a nonzero miss send | |
1668 | * length. */ | |
1669 | return ofconn->miss_send_len > 0; | |
1670 | } | |
1671 | } | |
064af421 BP |
1672 | \f |
1673 | /* Caller is responsible for initializing the 'cr' member of the returned | |
1674 | * rule. */ | |
1675 | static struct rule * | |
0193b2af | 1676 | rule_create(struct ofproto *ofproto, struct rule *super, |
064af421 | 1677 | const union ofp_action *actions, size_t n_actions, |
ca069229 | 1678 | uint16_t idle_timeout, uint16_t hard_timeout, |
39997502 | 1679 | uint64_t flow_cookie, bool send_flow_removed) |
064af421 | 1680 | { |
ec6fde61 | 1681 | struct rule *rule = xzalloc(sizeof *rule); |
064af421 BP |
1682 | rule->idle_timeout = idle_timeout; |
1683 | rule->hard_timeout = hard_timeout; | |
39997502 | 1684 | rule->flow_cookie = flow_cookie; |
064af421 | 1685 | rule->used = rule->created = time_msec(); |
ca069229 | 1686 | rule->send_flow_removed = send_flow_removed; |
064af421 BP |
1687 | rule->super = super; |
1688 | if (super) { | |
1689 | list_push_back(&super->list, &rule->list); | |
1690 | } else { | |
1691 | list_init(&rule->list); | |
1692 | } | |
1693 | rule->n_actions = n_actions; | |
1694 | rule->actions = xmemdup(actions, n_actions * sizeof *actions); | |
0193b2af JG |
1695 | netflow_flow_clear(&rule->nf_flow); |
1696 | netflow_flow_update_time(ofproto->netflow, &rule->nf_flow, rule->created); | |
1697 | ||
064af421 BP |
1698 | return rule; |
1699 | } | |
1700 | ||
1701 | static struct rule * | |
1702 | rule_from_cls_rule(const struct cls_rule *cls_rule) | |
1703 | { | |
1704 | return cls_rule ? CONTAINER_OF(cls_rule, struct rule, cr) : NULL; | |
1705 | } | |
1706 | ||
1707 | static void | |
1708 | rule_free(struct rule *rule) | |
1709 | { | |
1710 | free(rule->actions); | |
1711 | free(rule->odp_actions); | |
1712 | free(rule); | |
1713 | } | |
1714 | ||
1715 | /* Destroys 'rule'. If 'rule' is a subrule, also removes it from its | |
1716 | * super-rule's list of subrules. If 'rule' is a super-rule, also iterates | |
1717 | * through all of its subrules and revalidates them, destroying any that no | |
1718 | * longer has a super-rule (which is probably all of them). | |
1719 | * | |
1720 | * Before calling this function, the caller must make have removed 'rule' from | |
1721 | * the classifier. If 'rule' is an exact-match rule, the caller is also | |
1722 | * responsible for ensuring that it has been uninstalled from the datapath. */ | |
1723 | static void | |
1724 | rule_destroy(struct ofproto *ofproto, struct rule *rule) | |
1725 | { | |
1726 | if (!rule->super) { | |
1727 | struct rule *subrule, *next; | |
1728 | LIST_FOR_EACH_SAFE (subrule, next, struct rule, list, &rule->list) { | |
1729 | revalidate_rule(ofproto, subrule); | |
1730 | } | |
1731 | } else { | |
1732 | list_remove(&rule->list); | |
1733 | } | |
1734 | rule_free(rule); | |
1735 | } | |
1736 | ||
1737 | static bool | |
1738 | rule_has_out_port(const struct rule *rule, uint16_t out_port) | |
1739 | { | |
1740 | const union ofp_action *oa; | |
1741 | struct actions_iterator i; | |
1742 | ||
1743 | if (out_port == htons(OFPP_NONE)) { | |
1744 | return true; | |
1745 | } | |
1746 | for (oa = actions_first(&i, rule->actions, rule->n_actions); oa; | |
1747 | oa = actions_next(&i)) { | |
1748 | if (oa->type == htons(OFPAT_OUTPUT) && oa->output.port == out_port) { | |
1749 | return true; | |
1750 | } | |
1751 | } | |
1752 | return false; | |
1753 | } | |
1754 | ||
1755 | /* Executes the actions indicated by 'rule' on 'packet', which is in flow | |
1756 | * 'flow' and is considered to have arrived on ODP port 'in_port'. | |
1757 | * | |
1758 | * The flow that 'packet' actually contains does not need to actually match | |
1759 | * 'rule'; the actions in 'rule' will be applied to it either way. Likewise, | |
1760 | * the packet and byte counters for 'rule' will be credited for the packet sent | |
1761 | * out whether or not the packet actually matches 'rule'. | |
1762 | * | |
1763 | * If 'rule' is an exact-match rule and 'flow' actually equals the rule's flow, | |
1764 | * the caller must already have accurately composed ODP actions for it given | |
1765 | * 'packet' using rule_make_actions(). If 'rule' is a wildcard rule, or if | |
1766 | * 'rule' is an exact-match rule but 'flow' is not the rule's flow, then this | |
1767 | * function will compose a set of ODP actions based on 'rule''s OpenFlow | |
1768 | * actions and apply them to 'packet'. */ | |
1769 | static void | |
1770 | rule_execute(struct ofproto *ofproto, struct rule *rule, | |
1771 | struct ofpbuf *packet, const flow_t *flow) | |
1772 | { | |
1773 | const union odp_action *actions; | |
1774 | size_t n_actions; | |
1775 | struct odp_actions a; | |
1776 | ||
1777 | /* Grab or compose the ODP actions. | |
1778 | * | |
1779 | * The special case for an exact-match 'rule' where 'flow' is not the | |
1780 | * rule's flow is important to avoid, e.g., sending a packet out its input | |
1781 | * port simply because the ODP actions were composed for the wrong | |
1782 | * scenario. */ | |
1783 | if (rule->cr.wc.wildcards || !flow_equal(flow, &rule->cr.flow)) { | |
1784 | struct rule *super = rule->super ? rule->super : rule; | |
1785 | if (xlate_actions(super->actions, super->n_actions, flow, ofproto, | |
6a07af36 | 1786 | packet, &a, NULL, 0, NULL)) { |
064af421 BP |
1787 | return; |
1788 | } | |
1789 | actions = a.actions; | |
1790 | n_actions = a.n_actions; | |
1791 | } else { | |
1792 | actions = rule->odp_actions; | |
1793 | n_actions = rule->n_odp_actions; | |
1794 | } | |
1795 | ||
1796 | /* Execute the ODP actions. */ | |
c228a364 | 1797 | if (!dpif_execute(ofproto->dpif, flow->in_port, |
064af421 BP |
1798 | actions, n_actions, packet)) { |
1799 | struct odp_flow_stats stats; | |
1800 | flow_extract_stats(flow, packet, &stats); | |
0193b2af | 1801 | update_stats(ofproto, rule, &stats); |
064af421 | 1802 | rule->used = time_msec(); |
0193b2af | 1803 | netflow_flow_update_time(ofproto->netflow, &rule->nf_flow, rule->used); |
064af421 BP |
1804 | } |
1805 | } | |
1806 | ||
1807 | static void | |
1808 | rule_insert(struct ofproto *p, struct rule *rule, struct ofpbuf *packet, | |
1809 | uint16_t in_port) | |
1810 | { | |
1811 | struct rule *displaced_rule; | |
1812 | ||
1813 | /* Insert the rule in the classifier. */ | |
1814 | displaced_rule = rule_from_cls_rule(classifier_insert(&p->cls, &rule->cr)); | |
1815 | if (!rule->cr.wc.wildcards) { | |
1816 | rule_make_actions(p, rule, packet); | |
1817 | } | |
1818 | ||
1819 | /* Send the packet and credit it to the rule. */ | |
1820 | if (packet) { | |
1821 | flow_t flow; | |
659586ef | 1822 | flow_extract(packet, 0, in_port, &flow); |
064af421 BP |
1823 | rule_execute(p, rule, packet, &flow); |
1824 | } | |
1825 | ||
1826 | /* Install the rule in the datapath only after sending the packet, to | |
1827 | * avoid packet reordering. */ | |
1828 | if (rule->cr.wc.wildcards) { | |
1829 | COVERAGE_INC(ofproto_add_wc_flow); | |
1830 | p->need_revalidate = true; | |
1831 | } else { | |
1832 | rule_install(p, rule, displaced_rule); | |
1833 | } | |
1834 | ||
1835 | /* Free the rule that was displaced, if any. */ | |
1836 | if (displaced_rule) { | |
1837 | rule_destroy(p, displaced_rule); | |
1838 | } | |
1839 | } | |
1840 | ||
1841 | static struct rule * | |
1842 | rule_create_subrule(struct ofproto *ofproto, struct rule *rule, | |
1843 | const flow_t *flow) | |
1844 | { | |
0193b2af | 1845 | struct rule *subrule = rule_create(ofproto, rule, NULL, 0, |
ca069229 | 1846 | rule->idle_timeout, rule->hard_timeout, |
39997502 | 1847 | 0, false); |
064af421 | 1848 | COVERAGE_INC(ofproto_subrule_create); |
659586ef JG |
1849 | cls_rule_from_flow(flow, 0, (rule->cr.priority <= UINT16_MAX ? UINT16_MAX |
1850 | : rule->cr.priority), &subrule->cr); | |
064af421 BP |
1851 | classifier_insert_exact(&ofproto->cls, &subrule->cr); |
1852 | ||
1853 | return subrule; | |
1854 | } | |
1855 | ||
1856 | static void | |
1857 | rule_remove(struct ofproto *ofproto, struct rule *rule) | |
1858 | { | |
1859 | if (rule->cr.wc.wildcards) { | |
1860 | COVERAGE_INC(ofproto_del_wc_flow); | |
1861 | ofproto->need_revalidate = true; | |
1862 | } else { | |
1863 | rule_uninstall(ofproto, rule); | |
1864 | } | |
1865 | classifier_remove(&ofproto->cls, &rule->cr); | |
1866 | rule_destroy(ofproto, rule); | |
1867 | } | |
1868 | ||
1869 | /* Returns true if the actions changed, false otherwise. */ | |
1870 | static bool | |
1871 | rule_make_actions(struct ofproto *p, struct rule *rule, | |
1872 | const struct ofpbuf *packet) | |
1873 | { | |
1874 | const struct rule *super; | |
1875 | struct odp_actions a; | |
1876 | size_t actions_len; | |
1877 | ||
1878 | assert(!rule->cr.wc.wildcards); | |
1879 | ||
1880 | super = rule->super ? rule->super : rule; | |
1881 | rule->tags = 0; | |
1882 | xlate_actions(super->actions, super->n_actions, &rule->cr.flow, p, | |
6a07af36 | 1883 | packet, &a, &rule->tags, &rule->may_install, |
0193b2af | 1884 | &rule->nf_flow.output_iface); |
064af421 BP |
1885 | |
1886 | actions_len = a.n_actions * sizeof *a.actions; | |
1887 | if (rule->n_odp_actions != a.n_actions | |
1888 | || memcmp(rule->odp_actions, a.actions, actions_len)) { | |
1889 | COVERAGE_INC(ofproto_odp_unchanged); | |
1890 | free(rule->odp_actions); | |
1891 | rule->n_odp_actions = a.n_actions; | |
1892 | rule->odp_actions = xmemdup(a.actions, actions_len); | |
1893 | return true; | |
1894 | } else { | |
1895 | return false; | |
1896 | } | |
1897 | } | |
1898 | ||
1899 | static int | |
1900 | do_put_flow(struct ofproto *ofproto, struct rule *rule, int flags, | |
1901 | struct odp_flow_put *put) | |
1902 | { | |
1903 | memset(&put->flow.stats, 0, sizeof put->flow.stats); | |
1904 | put->flow.key = rule->cr.flow; | |
1905 | put->flow.actions = rule->odp_actions; | |
1906 | put->flow.n_actions = rule->n_odp_actions; | |
ab48643b | 1907 | put->flow.flags = 0; |
064af421 | 1908 | put->flags = flags; |
c228a364 | 1909 | return dpif_flow_put(ofproto->dpif, put); |
064af421 BP |
1910 | } |
1911 | ||
1912 | static void | |
1913 | rule_install(struct ofproto *p, struct rule *rule, struct rule *displaced_rule) | |
1914 | { | |
1915 | assert(!rule->cr.wc.wildcards); | |
1916 | ||
1917 | if (rule->may_install) { | |
1918 | struct odp_flow_put put; | |
1919 | if (!do_put_flow(p, rule, | |
1920 | ODPPF_CREATE | ODPPF_MODIFY | ODPPF_ZERO_STATS, | |
1921 | &put)) { | |
1922 | rule->installed = true; | |
1923 | if (displaced_rule) { | |
14986b31 | 1924 | update_stats(p, displaced_rule, &put.flow.stats); |
064af421 BP |
1925 | rule_post_uninstall(p, displaced_rule); |
1926 | } | |
1927 | } | |
1928 | } else if (displaced_rule) { | |
1929 | rule_uninstall(p, displaced_rule); | |
1930 | } | |
1931 | } | |
1932 | ||
1933 | static void | |
1934 | rule_reinstall(struct ofproto *ofproto, struct rule *rule) | |
1935 | { | |
1936 | if (rule->installed) { | |
1937 | struct odp_flow_put put; | |
1938 | COVERAGE_INC(ofproto_dp_missed); | |
1939 | do_put_flow(ofproto, rule, ODPPF_CREATE | ODPPF_MODIFY, &put); | |
1940 | } else { | |
1941 | rule_install(ofproto, rule, NULL); | |
1942 | } | |
1943 | } | |
1944 | ||
1945 | static void | |
1946 | rule_update_actions(struct ofproto *ofproto, struct rule *rule) | |
1947 | { | |
42c3641c JG |
1948 | bool actions_changed; |
1949 | uint16_t new_out_iface, old_out_iface; | |
1950 | ||
1951 | old_out_iface = rule->nf_flow.output_iface; | |
1952 | actions_changed = rule_make_actions(ofproto, rule, NULL); | |
1953 | ||
064af421 BP |
1954 | if (rule->may_install) { |
1955 | if (rule->installed) { | |
1956 | if (actions_changed) { | |
064af421 | 1957 | struct odp_flow_put put; |
42c3641c JG |
1958 | do_put_flow(ofproto, rule, ODPPF_CREATE | ODPPF_MODIFY |
1959 | | ODPPF_ZERO_STATS, &put); | |
1960 | update_stats(ofproto, rule, &put.flow.stats); | |
1961 | ||
1962 | /* Temporarily set the old output iface so that NetFlow | |
1963 | * messages have the correct output interface for the old | |
1964 | * stats. */ | |
1965 | new_out_iface = rule->nf_flow.output_iface; | |
1966 | rule->nf_flow.output_iface = old_out_iface; | |
1967 | rule_post_uninstall(ofproto, rule); | |
1968 | rule->nf_flow.output_iface = new_out_iface; | |
064af421 BP |
1969 | } |
1970 | } else { | |
1971 | rule_install(ofproto, rule, NULL); | |
1972 | } | |
1973 | } else { | |
1974 | rule_uninstall(ofproto, rule); | |
1975 | } | |
1976 | } | |
1977 | ||
1978 | static void | |
1979 | rule_account(struct ofproto *ofproto, struct rule *rule, uint64_t extra_bytes) | |
1980 | { | |
1981 | uint64_t total_bytes = rule->byte_count + extra_bytes; | |
1982 | ||
1983 | if (ofproto->ofhooks->account_flow_cb | |
1984 | && total_bytes > rule->accounted_bytes) | |
1985 | { | |
1986 | ofproto->ofhooks->account_flow_cb( | |
1987 | &rule->cr.flow, rule->odp_actions, rule->n_odp_actions, | |
1988 | total_bytes - rule->accounted_bytes, ofproto->aux); | |
1989 | rule->accounted_bytes = total_bytes; | |
1990 | } | |
1991 | } | |
1992 | ||
1993 | static void | |
1994 | rule_uninstall(struct ofproto *p, struct rule *rule) | |
1995 | { | |
1996 | assert(!rule->cr.wc.wildcards); | |
1997 | if (rule->installed) { | |
1998 | struct odp_flow odp_flow; | |
1999 | ||
2000 | odp_flow.key = rule->cr.flow; | |
2001 | odp_flow.actions = NULL; | |
2002 | odp_flow.n_actions = 0; | |
ab48643b | 2003 | odp_flow.flags = 0; |
c228a364 | 2004 | if (!dpif_flow_del(p->dpif, &odp_flow)) { |
0193b2af | 2005 | update_stats(p, rule, &odp_flow.stats); |
064af421 BP |
2006 | } |
2007 | rule->installed = false; | |
2008 | ||
2009 | rule_post_uninstall(p, rule); | |
2010 | } | |
2011 | } | |
2012 | ||
0193b2af JG |
2013 | static bool |
2014 | is_controller_rule(struct rule *rule) | |
2015 | { | |
2016 | /* If the only action is send to the controller then don't report | |
2017 | * NetFlow expiration messages since it is just part of the control | |
2018 | * logic for the network and not real traffic. */ | |
2019 | ||
2020 | if (rule && rule->super) { | |
2021 | struct rule *super = rule->super; | |
2022 | ||
2023 | return super->n_actions == 1 && | |
2024 | super->actions[0].type == htons(OFPAT_OUTPUT) && | |
2025 | super->actions[0].output.port == htons(OFPP_CONTROLLER); | |
2026 | } | |
2027 | ||
2028 | return false; | |
2029 | } | |
2030 | ||
064af421 BP |
2031 | static void |
2032 | rule_post_uninstall(struct ofproto *ofproto, struct rule *rule) | |
2033 | { | |
2034 | struct rule *super = rule->super; | |
2035 | ||
2036 | rule_account(ofproto, rule, 0); | |
6a07af36 | 2037 | |
0193b2af | 2038 | if (ofproto->netflow && !is_controller_rule(rule)) { |
064af421 BP |
2039 | struct ofexpired expired; |
2040 | expired.flow = rule->cr.flow; | |
2041 | expired.packet_count = rule->packet_count; | |
2042 | expired.byte_count = rule->byte_count; | |
2043 | expired.used = rule->used; | |
0193b2af | 2044 | netflow_expire(ofproto->netflow, &rule->nf_flow, &expired); |
064af421 BP |
2045 | } |
2046 | if (super) { | |
2047 | super->packet_count += rule->packet_count; | |
2048 | super->byte_count += rule->byte_count; | |
064af421 | 2049 | |
0c0afbec JG |
2050 | /* Reset counters to prevent double counting if the rule ever gets |
2051 | * reinstalled. */ | |
2052 | rule->packet_count = 0; | |
2053 | rule->byte_count = 0; | |
2054 | rule->accounted_bytes = 0; | |
0193b2af JG |
2055 | |
2056 | netflow_flow_clear(&rule->nf_flow); | |
0c0afbec | 2057 | } |
064af421 BP |
2058 | } |
2059 | \f | |
2060 | static void | |
2061 | queue_tx(struct ofpbuf *msg, const struct ofconn *ofconn, | |
2062 | struct rconn_packet_counter *counter) | |
2063 | { | |
2064 | update_openflow_length(msg); | |
2065 | if (rconn_send(ofconn->rconn, msg, counter)) { | |
2066 | ofpbuf_delete(msg); | |
2067 | } | |
2068 | } | |
2069 | ||
2070 | static void | |
2071 | send_error(const struct ofconn *ofconn, const struct ofp_header *oh, | |
2072 | int error, const void *data, size_t len) | |
2073 | { | |
2074 | struct ofpbuf *buf; | |
2075 | struct ofp_error_msg *oem; | |
2076 | ||
2077 | if (!(error >> 16)) { | |
2078 | VLOG_WARN_RL(&rl, "not sending bad error code %d to controller", | |
2079 | error); | |
2080 | return; | |
2081 | } | |
2082 | ||
2083 | COVERAGE_INC(ofproto_error); | |
2084 | oem = make_openflow_xid(len + sizeof *oem, OFPT_ERROR, | |
2085 | oh ? oh->xid : 0, &buf); | |
2086 | oem->type = htons((unsigned int) error >> 16); | |
2087 | oem->code = htons(error & 0xffff); | |
2088 | memcpy(oem->data, data, len); | |
2089 | queue_tx(buf, ofconn, ofconn->reply_counter); | |
2090 | } | |
2091 | ||
2092 | static void | |
2093 | send_error_oh(const struct ofconn *ofconn, const struct ofp_header *oh, | |
2094 | int error) | |
2095 | { | |
2096 | size_t oh_length = ntohs(oh->length); | |
2097 | send_error(ofconn, oh, error, oh, MIN(oh_length, 64)); | |
2098 | } | |
2099 | ||
2100 | static void | |
2101 | hton_ofp_phy_port(struct ofp_phy_port *opp) | |
2102 | { | |
2103 | opp->port_no = htons(opp->port_no); | |
2104 | opp->config = htonl(opp->config); | |
2105 | opp->state = htonl(opp->state); | |
2106 | opp->curr = htonl(opp->curr); | |
2107 | opp->advertised = htonl(opp->advertised); | |
2108 | opp->supported = htonl(opp->supported); | |
2109 | opp->peer = htonl(opp->peer); | |
2110 | } | |
2111 | ||
2112 | static int | |
2113 | handle_echo_request(struct ofconn *ofconn, struct ofp_header *oh) | |
2114 | { | |
2115 | struct ofp_header *rq = oh; | |
2116 | queue_tx(make_echo_reply(rq), ofconn, ofconn->reply_counter); | |
2117 | return 0; | |
2118 | } | |
2119 | ||
2120 | static int | |
2121 | handle_features_request(struct ofproto *p, struct ofconn *ofconn, | |
2122 | struct ofp_header *oh) | |
2123 | { | |
2124 | struct ofp_switch_features *osf; | |
2125 | struct ofpbuf *buf; | |
2126 | unsigned int port_no; | |
2127 | struct ofport *port; | |
2128 | ||
2129 | osf = make_openflow_xid(sizeof *osf, OFPT_FEATURES_REPLY, oh->xid, &buf); | |
2130 | osf->datapath_id = htonll(p->datapath_id); | |
2131 | osf->n_buffers = htonl(pktbuf_capacity()); | |
2132 | osf->n_tables = 2; | |
2133 | osf->capabilities = htonl(OFPC_FLOW_STATS | OFPC_TABLE_STATS | | |
0254ae23 | 2134 | OFPC_PORT_STATS | OFPC_ARP_MATCH_IP); |
064af421 BP |
2135 | osf->actions = htonl((1u << OFPAT_OUTPUT) | |
2136 | (1u << OFPAT_SET_VLAN_VID) | | |
2137 | (1u << OFPAT_SET_VLAN_PCP) | | |
2138 | (1u << OFPAT_STRIP_VLAN) | | |
2139 | (1u << OFPAT_SET_DL_SRC) | | |
2140 | (1u << OFPAT_SET_DL_DST) | | |
2141 | (1u << OFPAT_SET_NW_SRC) | | |
2142 | (1u << OFPAT_SET_NW_DST) | | |
959a2ecd | 2143 | (1u << OFPAT_SET_NW_TOS) | |
064af421 BP |
2144 | (1u << OFPAT_SET_TP_SRC) | |
2145 | (1u << OFPAT_SET_TP_DST)); | |
2146 | ||
2147 | PORT_ARRAY_FOR_EACH (port, &p->ports, port_no) { | |
2148 | hton_ofp_phy_port(ofpbuf_put(buf, &port->opp, sizeof port->opp)); | |
2149 | } | |
2150 | ||
2151 | queue_tx(buf, ofconn, ofconn->reply_counter); | |
2152 | return 0; | |
2153 | } | |
2154 | ||
2155 | static int | |
2156 | handle_get_config_request(struct ofproto *p, struct ofconn *ofconn, | |
2157 | struct ofp_header *oh) | |
2158 | { | |
2159 | struct ofpbuf *buf; | |
2160 | struct ofp_switch_config *osc; | |
2161 | uint16_t flags; | |
2162 | bool drop_frags; | |
2163 | ||
2164 | /* Figure out flags. */ | |
c228a364 | 2165 | dpif_get_drop_frags(p->dpif, &drop_frags); |
064af421 | 2166 | flags = drop_frags ? OFPC_FRAG_DROP : OFPC_FRAG_NORMAL; |
064af421 BP |
2167 | |
2168 | /* Send reply. */ | |
2169 | osc = make_openflow_xid(sizeof *osc, OFPT_GET_CONFIG_REPLY, oh->xid, &buf); | |
2170 | osc->flags = htons(flags); | |
2171 | osc->miss_send_len = htons(ofconn->miss_send_len); | |
2172 | queue_tx(buf, ofconn, ofconn->reply_counter); | |
2173 | ||
2174 | return 0; | |
2175 | } | |
2176 | ||
2177 | static int | |
2178 | handle_set_config(struct ofproto *p, struct ofconn *ofconn, | |
2179 | struct ofp_switch_config *osc) | |
2180 | { | |
2181 | uint16_t flags; | |
2182 | int error; | |
2183 | ||
2184 | error = check_ofp_message(&osc->header, OFPT_SET_CONFIG, sizeof *osc); | |
2185 | if (error) { | |
2186 | return error; | |
2187 | } | |
2188 | flags = ntohs(osc->flags); | |
2189 | ||
9deba63b | 2190 | if (ofconn->type == OFCONN_CONTROLLER && ofconn->role != NX_ROLE_SLAVE) { |
064af421 BP |
2191 | switch (flags & OFPC_FRAG_MASK) { |
2192 | case OFPC_FRAG_NORMAL: | |
c228a364 | 2193 | dpif_set_drop_frags(p->dpif, false); |
064af421 BP |
2194 | break; |
2195 | case OFPC_FRAG_DROP: | |
c228a364 | 2196 | dpif_set_drop_frags(p->dpif, true); |
064af421 BP |
2197 | break; |
2198 | default: | |
2199 | VLOG_WARN_RL(&rl, "requested bad fragment mode (flags=%"PRIx16")", | |
2200 | osc->flags); | |
2201 | break; | |
2202 | } | |
2203 | } | |
2204 | ||
064af421 BP |
2205 | ofconn->miss_send_len = ntohs(osc->miss_send_len); |
2206 | ||
2207 | return 0; | |
2208 | } | |
2209 | ||
2210 | static void | |
6a07af36 JG |
2211 | add_output_group_action(struct odp_actions *actions, uint16_t group, |
2212 | uint16_t *nf_output_iface) | |
064af421 BP |
2213 | { |
2214 | odp_actions_add(actions, ODPAT_OUTPUT_GROUP)->output_group.group = group; | |
6a07af36 JG |
2215 | |
2216 | if (group == DP_GROUP_ALL || group == DP_GROUP_FLOOD) { | |
2217 | *nf_output_iface = NF_OUT_FLOOD; | |
2218 | } | |
064af421 BP |
2219 | } |
2220 | ||
2221 | static void | |
2222 | add_controller_action(struct odp_actions *actions, | |
2223 | const struct ofp_action_output *oao) | |
2224 | { | |
2225 | union odp_action *a = odp_actions_add(actions, ODPAT_CONTROLLER); | |
30ea5d93 | 2226 | a->controller.arg = ntohs(oao->max_len); |
064af421 BP |
2227 | } |
2228 | ||
2229 | struct action_xlate_ctx { | |
2230 | /* Input. */ | |
e18fe8a2 | 2231 | flow_t flow; /* Flow to which these actions correspond. */ |
064af421 BP |
2232 | int recurse; /* Recursion level, via xlate_table_action. */ |
2233 | struct ofproto *ofproto; | |
2234 | const struct ofpbuf *packet; /* The packet corresponding to 'flow', or a | |
2235 | * null pointer if we are revalidating | |
2236 | * without a packet to refer to. */ | |
2237 | ||
2238 | /* Output. */ | |
2239 | struct odp_actions *out; /* Datapath actions. */ | |
2240 | tag_type *tags; /* Tags associated with OFPP_NORMAL actions. */ | |
d6fbec6d | 2241 | bool may_set_up_flow; /* True ordinarily; false if the actions must |
064af421 | 2242 | * be reassessed for every packet. */ |
6a07af36 | 2243 | uint16_t nf_output_iface; /* Output interface index for NetFlow. */ |
064af421 BP |
2244 | }; |
2245 | ||
2246 | static void do_xlate_actions(const union ofp_action *in, size_t n_in, | |
2247 | struct action_xlate_ctx *ctx); | |
2248 | ||
2249 | static void | |
2250 | add_output_action(struct action_xlate_ctx *ctx, uint16_t port) | |
2251 | { | |
2252 | const struct ofport *ofport = port_array_get(&ctx->ofproto->ports, port); | |
6cfaf517 BP |
2253 | |
2254 | if (ofport) { | |
2255 | if (ofport->opp.config & OFPPC_NO_FWD) { | |
2256 | /* Forwarding disabled on port. */ | |
2257 | return; | |
2258 | } | |
2259 | } else { | |
2260 | /* | |
2261 | * We don't have an ofport record for this port, but it doesn't hurt to | |
2262 | * allow forwarding to it anyhow. Maybe such a port will appear later | |
2263 | * and we're pre-populating the flow table. | |
2264 | */ | |
064af421 | 2265 | } |
6cfaf517 BP |
2266 | |
2267 | odp_actions_add(ctx->out, ODPAT_OUTPUT)->output.port = port; | |
6a07af36 | 2268 | ctx->nf_output_iface = port; |
064af421 BP |
2269 | } |
2270 | ||
2271 | static struct rule * | |
2272 | lookup_valid_rule(struct ofproto *ofproto, const flow_t *flow) | |
2273 | { | |
2274 | struct rule *rule; | |
2275 | rule = rule_from_cls_rule(classifier_lookup(&ofproto->cls, flow)); | |
2276 | ||
2277 | /* The rule we found might not be valid, since we could be in need of | |
2278 | * revalidation. If it is not valid, don't return it. */ | |
2279 | if (rule | |
2280 | && rule->super | |
2281 | && ofproto->need_revalidate | |
2282 | && !revalidate_rule(ofproto, rule)) { | |
2283 | COVERAGE_INC(ofproto_invalidated); | |
2284 | return NULL; | |
2285 | } | |
2286 | ||
2287 | return rule; | |
2288 | } | |
2289 | ||
2290 | static void | |
2291 | xlate_table_action(struct action_xlate_ctx *ctx, uint16_t in_port) | |
2292 | { | |
2293 | if (!ctx->recurse) { | |
2c5d1389 | 2294 | uint16_t old_in_port; |
064af421 | 2295 | struct rule *rule; |
064af421 | 2296 | |
2c5d1389 BP |
2297 | /* Look up a flow with 'in_port' as the input port. Then restore the |
2298 | * original input port (otherwise OFPP_NORMAL and OFPP_IN_PORT will | |
2299 | * have surprising behavior). */ | |
2300 | old_in_port = ctx->flow.in_port; | |
e18fe8a2 BP |
2301 | ctx->flow.in_port = in_port; |
2302 | rule = lookup_valid_rule(ctx->ofproto, &ctx->flow); | |
2c5d1389 BP |
2303 | ctx->flow.in_port = old_in_port; |
2304 | ||
064af421 BP |
2305 | if (rule) { |
2306 | if (rule->super) { | |
2307 | rule = rule->super; | |
2308 | } | |
2309 | ||
2310 | ctx->recurse++; | |
2311 | do_xlate_actions(rule->actions, rule->n_actions, ctx); | |
2312 | ctx->recurse--; | |
2313 | } | |
2314 | } | |
2315 | } | |
2316 | ||
2317 | static void | |
2318 | xlate_output_action(struct action_xlate_ctx *ctx, | |
2319 | const struct ofp_action_output *oao) | |
2320 | { | |
2321 | uint16_t odp_port; | |
6a07af36 JG |
2322 | uint16_t prev_nf_output_iface = ctx->nf_output_iface; |
2323 | ||
2324 | ctx->nf_output_iface = NF_OUT_DROP; | |
064af421 BP |
2325 | |
2326 | switch (ntohs(oao->port)) { | |
2327 | case OFPP_IN_PORT: | |
e18fe8a2 | 2328 | add_output_action(ctx, ctx->flow.in_port); |
064af421 BP |
2329 | break; |
2330 | case OFPP_TABLE: | |
e18fe8a2 | 2331 | xlate_table_action(ctx, ctx->flow.in_port); |
064af421 BP |
2332 | break; |
2333 | case OFPP_NORMAL: | |
e18fe8a2 | 2334 | if (!ctx->ofproto->ofhooks->normal_cb(&ctx->flow, ctx->packet, |
064af421 | 2335 | ctx->out, ctx->tags, |
6a07af36 | 2336 | &ctx->nf_output_iface, |
064af421 BP |
2337 | ctx->ofproto->aux)) { |
2338 | COVERAGE_INC(ofproto_uninstallable); | |
d6fbec6d | 2339 | ctx->may_set_up_flow = false; |
064af421 BP |
2340 | } |
2341 | break; | |
2342 | case OFPP_FLOOD: | |
6a07af36 JG |
2343 | add_output_group_action(ctx->out, DP_GROUP_FLOOD, |
2344 | &ctx->nf_output_iface); | |
064af421 BP |
2345 | break; |
2346 | case OFPP_ALL: | |
6a07af36 | 2347 | add_output_group_action(ctx->out, DP_GROUP_ALL, &ctx->nf_output_iface); |
064af421 BP |
2348 | break; |
2349 | case OFPP_CONTROLLER: | |
2350 | add_controller_action(ctx->out, oao); | |
2351 | break; | |
2352 | case OFPP_LOCAL: | |
2353 | add_output_action(ctx, ODPP_LOCAL); | |
2354 | break; | |
2355 | default: | |
2356 | odp_port = ofp_port_to_odp_port(ntohs(oao->port)); | |
e18fe8a2 | 2357 | if (odp_port != ctx->flow.in_port) { |
064af421 BP |
2358 | add_output_action(ctx, odp_port); |
2359 | } | |
2360 | break; | |
2361 | } | |
6a07af36 JG |
2362 | |
2363 | if (prev_nf_output_iface == NF_OUT_FLOOD) { | |
2364 | ctx->nf_output_iface = NF_OUT_FLOOD; | |
2365 | } else if (ctx->nf_output_iface == NF_OUT_DROP) { | |
2366 | ctx->nf_output_iface = prev_nf_output_iface; | |
2367 | } else if (prev_nf_output_iface != NF_OUT_DROP && | |
2368 | ctx->nf_output_iface != NF_OUT_FLOOD) { | |
2369 | ctx->nf_output_iface = NF_OUT_MULTI; | |
2370 | } | |
064af421 BP |
2371 | } |
2372 | ||
2373 | static void | |
2374 | xlate_nicira_action(struct action_xlate_ctx *ctx, | |
2375 | const struct nx_action_header *nah) | |
2376 | { | |
2377 | const struct nx_action_resubmit *nar; | |
659586ef JG |
2378 | const struct nx_action_set_tunnel *nast; |
2379 | union odp_action *oa; | |
064af421 BP |
2380 | int subtype = ntohs(nah->subtype); |
2381 | ||
2382 | assert(nah->vendor == htonl(NX_VENDOR_ID)); | |
2383 | switch (subtype) { | |
2384 | case NXAST_RESUBMIT: | |
2385 | nar = (const struct nx_action_resubmit *) nah; | |
2386 | xlate_table_action(ctx, ofp_port_to_odp_port(ntohs(nar->in_port))); | |
2387 | break; | |
2388 | ||
659586ef JG |
2389 | case NXAST_SET_TUNNEL: |
2390 | nast = (const struct nx_action_set_tunnel *) nah; | |
2391 | oa = odp_actions_add(ctx->out, ODPAT_SET_TUNNEL); | |
2392 | ctx->flow.tun_id = oa->tunnel.tun_id = nast->tun_id; | |
2393 | break; | |
2394 | ||
999f0d45 BP |
2395 | /* If you add a new action here that modifies flow data, don't forget to |
2396 | * update the flow key in ctx->flow in the same key. */ | |
2397 | ||
064af421 BP |
2398 | default: |
2399 | VLOG_DBG_RL(&rl, "unknown Nicira action type %"PRIu16, subtype); | |
2400 | break; | |
2401 | } | |
2402 | } | |
2403 | ||
2404 | static void | |
2405 | do_xlate_actions(const union ofp_action *in, size_t n_in, | |
2406 | struct action_xlate_ctx *ctx) | |
2407 | { | |
2408 | struct actions_iterator iter; | |
2409 | const union ofp_action *ia; | |
2410 | const struct ofport *port; | |
2411 | ||
e18fe8a2 | 2412 | port = port_array_get(&ctx->ofproto->ports, ctx->flow.in_port); |
064af421 | 2413 | if (port && port->opp.config & (OFPPC_NO_RECV | OFPPC_NO_RECV_STP) && |
e18fe8a2 | 2414 | port->opp.config & (eth_addr_equals(ctx->flow.dl_dst, stp_eth_addr) |
064af421 BP |
2415 | ? OFPPC_NO_RECV_STP : OFPPC_NO_RECV)) { |
2416 | /* Drop this flow. */ | |
2417 | return; | |
2418 | } | |
2419 | ||
2420 | for (ia = actions_first(&iter, in, n_in); ia; ia = actions_next(&iter)) { | |
2421 | uint16_t type = ntohs(ia->type); | |
2422 | union odp_action *oa; | |
2423 | ||
2424 | switch (type) { | |
2425 | case OFPAT_OUTPUT: | |
2426 | xlate_output_action(ctx, &ia->output); | |
2427 | break; | |
2428 | ||
2429 | case OFPAT_SET_VLAN_VID: | |
2430 | oa = odp_actions_add(ctx->out, ODPAT_SET_VLAN_VID); | |
999f0d45 | 2431 | ctx->flow.dl_vlan = oa->vlan_vid.vlan_vid = ia->vlan_vid.vlan_vid; |
064af421 BP |
2432 | break; |
2433 | ||
2434 | case OFPAT_SET_VLAN_PCP: | |
2435 | oa = odp_actions_add(ctx->out, ODPAT_SET_VLAN_PCP); | |
999f0d45 | 2436 | ctx->flow.dl_vlan_pcp = oa->vlan_pcp.vlan_pcp = ia->vlan_pcp.vlan_pcp; |
064af421 BP |
2437 | break; |
2438 | ||
2439 | case OFPAT_STRIP_VLAN: | |
2440 | odp_actions_add(ctx->out, ODPAT_STRIP_VLAN); | |
999f0d45 BP |
2441 | ctx->flow.dl_vlan = OFP_VLAN_NONE; |
2442 | ctx->flow.dl_vlan_pcp = 0; | |
064af421 BP |
2443 | break; |
2444 | ||
2445 | case OFPAT_SET_DL_SRC: | |
2446 | oa = odp_actions_add(ctx->out, ODPAT_SET_DL_SRC); | |
2447 | memcpy(oa->dl_addr.dl_addr, | |
2448 | ((struct ofp_action_dl_addr *) ia)->dl_addr, ETH_ADDR_LEN); | |
999f0d45 BP |
2449 | memcpy(ctx->flow.dl_src, |
2450 | ((struct ofp_action_dl_addr *) ia)->dl_addr, ETH_ADDR_LEN); | |
064af421 BP |
2451 | break; |
2452 | ||
2453 | case OFPAT_SET_DL_DST: | |
2454 | oa = odp_actions_add(ctx->out, ODPAT_SET_DL_DST); | |
2455 | memcpy(oa->dl_addr.dl_addr, | |
2456 | ((struct ofp_action_dl_addr *) ia)->dl_addr, ETH_ADDR_LEN); | |
999f0d45 BP |
2457 | memcpy(ctx->flow.dl_dst, |
2458 | ((struct ofp_action_dl_addr *) ia)->dl_addr, ETH_ADDR_LEN); | |
064af421 BP |
2459 | break; |
2460 | ||
2461 | case OFPAT_SET_NW_SRC: | |
2462 | oa = odp_actions_add(ctx->out, ODPAT_SET_NW_SRC); | |
999f0d45 | 2463 | ctx->flow.nw_src = oa->nw_addr.nw_addr = ia->nw_addr.nw_addr; |
064af421 BP |
2464 | break; |
2465 | ||
2d70a31a JP |
2466 | case OFPAT_SET_NW_DST: |
2467 | oa = odp_actions_add(ctx->out, ODPAT_SET_NW_DST); | |
999f0d45 | 2468 | ctx->flow.nw_dst = oa->nw_addr.nw_addr = ia->nw_addr.nw_addr; |
2d38e234 | 2469 | break; |
959a2ecd JP |
2470 | |
2471 | case OFPAT_SET_NW_TOS: | |
2472 | oa = odp_actions_add(ctx->out, ODPAT_SET_NW_TOS); | |
999f0d45 | 2473 | ctx->flow.nw_tos = oa->nw_tos.nw_tos = ia->nw_tos.nw_tos; |
2d70a31a JP |
2474 | break; |
2475 | ||
064af421 BP |
2476 | case OFPAT_SET_TP_SRC: |
2477 | oa = odp_actions_add(ctx->out, ODPAT_SET_TP_SRC); | |
999f0d45 | 2478 | ctx->flow.tp_src = oa->tp_port.tp_port = ia->tp_port.tp_port; |
064af421 BP |
2479 | break; |
2480 | ||
2d70a31a JP |
2481 | case OFPAT_SET_TP_DST: |
2482 | oa = odp_actions_add(ctx->out, ODPAT_SET_TP_DST); | |
999f0d45 | 2483 | ctx->flow.tp_dst = oa->tp_port.tp_port = ia->tp_port.tp_port; |
2d70a31a JP |
2484 | break; |
2485 | ||
064af421 BP |
2486 | case OFPAT_VENDOR: |
2487 | xlate_nicira_action(ctx, (const struct nx_action_header *) ia); | |
2488 | break; | |
2489 | ||
2490 | default: | |
2491 | VLOG_DBG_RL(&rl, "unknown action type %"PRIu16, type); | |
2492 | break; | |
2493 | } | |
2494 | } | |
2495 | } | |
2496 | ||
2497 | static int | |
2498 | xlate_actions(const union ofp_action *in, size_t n_in, | |
2499 | const flow_t *flow, struct ofproto *ofproto, | |
2500 | const struct ofpbuf *packet, | |
6a07af36 JG |
2501 | struct odp_actions *out, tag_type *tags, bool *may_set_up_flow, |
2502 | uint16_t *nf_output_iface) | |
064af421 BP |
2503 | { |
2504 | tag_type no_tags = 0; | |
2505 | struct action_xlate_ctx ctx; | |
2506 | COVERAGE_INC(ofproto_ofp2odp); | |
2507 | odp_actions_init(out); | |
e18fe8a2 | 2508 | ctx.flow = *flow; |
064af421 BP |
2509 | ctx.recurse = 0; |
2510 | ctx.ofproto = ofproto; | |
2511 | ctx.packet = packet; | |
2512 | ctx.out = out; | |
2513 | ctx.tags = tags ? tags : &no_tags; | |
d6fbec6d | 2514 | ctx.may_set_up_flow = true; |
6a07af36 | 2515 | ctx.nf_output_iface = NF_OUT_DROP; |
064af421 | 2516 | do_xlate_actions(in, n_in, &ctx); |
0ad9b732 | 2517 | |
d6fbec6d | 2518 | /* Check with in-band control to see if we're allowed to set up this |
0ad9b732 JP |
2519 | * flow. */ |
2520 | if (!in_band_rule_check(ofproto->in_band, flow, out)) { | |
d6fbec6d | 2521 | ctx.may_set_up_flow = false; |
0ad9b732 JP |
2522 | } |
2523 | ||
d6fbec6d BP |
2524 | if (may_set_up_flow) { |
2525 | *may_set_up_flow = ctx.may_set_up_flow; | |
064af421 | 2526 | } |
6a07af36 JG |
2527 | if (nf_output_iface) { |
2528 | *nf_output_iface = ctx.nf_output_iface; | |
064af421 BP |
2529 | } |
2530 | if (odp_actions_overflow(out)) { | |
2531 | odp_actions_init(out); | |
2532 | return ofp_mkerr(OFPET_BAD_ACTION, OFPBAC_TOO_MANY); | |
2533 | } | |
2534 | return 0; | |
2535 | } | |
2536 | ||
9deba63b BP |
2537 | /* Checks whether 'ofconn' is a slave controller. If so, returns an OpenFlow |
2538 | * error message code (composed with ofp_mkerr()) for the caller to propagate | |
2539 | * upward. Otherwise, returns 0. | |
2540 | * | |
2541 | * 'oh' is used to make log messages more informative. */ | |
2542 | static int | |
2543 | reject_slave_controller(struct ofconn *ofconn, const struct ofp_header *oh) | |
2544 | { | |
2545 | if (ofconn->type == OFCONN_CONTROLLER && ofconn->role == NX_ROLE_SLAVE) { | |
2546 | static struct vlog_rate_limit perm_rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
2547 | char *type_name; | |
2548 | ||
2549 | type_name = ofp_message_type_to_string(oh->type); | |
2550 | VLOG_WARN_RL(&perm_rl, "rejecting %s message from slave controller", | |
2551 | type_name); | |
2552 | free(type_name); | |
2553 | ||
2554 | return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_EPERM); | |
2555 | } else { | |
2556 | return 0; | |
2557 | } | |
2558 | } | |
2559 | ||
064af421 BP |
2560 | static int |
2561 | handle_packet_out(struct ofproto *p, struct ofconn *ofconn, | |
2562 | struct ofp_header *oh) | |
2563 | { | |
2564 | struct ofp_packet_out *opo; | |
2565 | struct ofpbuf payload, *buffer; | |
2566 | struct odp_actions actions; | |
2567 | int n_actions; | |
2568 | uint16_t in_port; | |
2569 | flow_t flow; | |
2570 | int error; | |
2571 | ||
9deba63b BP |
2572 | error = reject_slave_controller(ofconn, oh); |
2573 | if (error) { | |
2574 | return error; | |
2575 | } | |
2576 | ||
064af421 BP |
2577 | error = check_ofp_packet_out(oh, &payload, &n_actions, p->max_ports); |
2578 | if (error) { | |
2579 | return error; | |
2580 | } | |
2581 | opo = (struct ofp_packet_out *) oh; | |
2582 | ||
2583 | COVERAGE_INC(ofproto_packet_out); | |
2584 | if (opo->buffer_id != htonl(UINT32_MAX)) { | |
2585 | error = pktbuf_retrieve(ofconn->pktbuf, ntohl(opo->buffer_id), | |
2586 | &buffer, &in_port); | |
7778bd15 | 2587 | if (error || !buffer) { |
064af421 BP |
2588 | return error; |
2589 | } | |
2590 | payload = *buffer; | |
2591 | } else { | |
2592 | buffer = NULL; | |
2593 | } | |
2594 | ||
659586ef | 2595 | flow_extract(&payload, 0, ofp_port_to_odp_port(ntohs(opo->in_port)), &flow); |
064af421 | 2596 | error = xlate_actions((const union ofp_action *) opo->actions, n_actions, |
6a07af36 | 2597 | &flow, p, &payload, &actions, NULL, NULL, NULL); |
064af421 BP |
2598 | if (error) { |
2599 | return error; | |
2600 | } | |
2601 | ||
c228a364 | 2602 | dpif_execute(p->dpif, flow.in_port, actions.actions, actions.n_actions, |
064af421 BP |
2603 | &payload); |
2604 | ofpbuf_delete(buffer); | |
2605 | ||
2606 | return 0; | |
2607 | } | |
2608 | ||
2609 | static void | |
2610 | update_port_config(struct ofproto *p, struct ofport *port, | |
2611 | uint32_t config, uint32_t mask) | |
2612 | { | |
2613 | mask &= config ^ port->opp.config; | |
2614 | if (mask & OFPPC_PORT_DOWN) { | |
2615 | if (config & OFPPC_PORT_DOWN) { | |
2616 | netdev_turn_flags_off(port->netdev, NETDEV_UP, true); | |
2617 | } else { | |
2618 | netdev_turn_flags_on(port->netdev, NETDEV_UP, true); | |
2619 | } | |
2620 | } | |
2621 | #define REVALIDATE_BITS (OFPPC_NO_RECV | OFPPC_NO_RECV_STP | OFPPC_NO_FWD) | |
2622 | if (mask & REVALIDATE_BITS) { | |
2623 | COVERAGE_INC(ofproto_costly_flags); | |
2624 | port->opp.config ^= mask & REVALIDATE_BITS; | |
2625 | p->need_revalidate = true; | |
2626 | } | |
2627 | #undef REVALIDATE_BITS | |
2628 | if (mask & OFPPC_NO_FLOOD) { | |
2629 | port->opp.config ^= OFPPC_NO_FLOOD; | |
72b06300 | 2630 | refresh_port_groups(p); |
064af421 BP |
2631 | } |
2632 | if (mask & OFPPC_NO_PACKET_IN) { | |
2633 | port->opp.config ^= OFPPC_NO_PACKET_IN; | |
2634 | } | |
2635 | } | |
2636 | ||
2637 | static int | |
9deba63b BP |
2638 | handle_port_mod(struct ofproto *p, struct ofconn *ofconn, |
2639 | struct ofp_header *oh) | |
064af421 BP |
2640 | { |
2641 | const struct ofp_port_mod *opm; | |
2642 | struct ofport *port; | |
2643 | int error; | |
2644 | ||
9deba63b BP |
2645 | error = reject_slave_controller(ofconn, oh); |
2646 | if (error) { | |
2647 | return error; | |
2648 | } | |
064af421 BP |
2649 | error = check_ofp_message(oh, OFPT_PORT_MOD, sizeof *opm); |
2650 | if (error) { | |
2651 | return error; | |
2652 | } | |
2653 | opm = (struct ofp_port_mod *) oh; | |
2654 | ||
2655 | port = port_array_get(&p->ports, | |
2656 | ofp_port_to_odp_port(ntohs(opm->port_no))); | |
2657 | if (!port) { | |
2658 | return ofp_mkerr(OFPET_PORT_MOD_FAILED, OFPPMFC_BAD_PORT); | |
2659 | } else if (memcmp(port->opp.hw_addr, opm->hw_addr, OFP_ETH_ALEN)) { | |
2660 | return ofp_mkerr(OFPET_PORT_MOD_FAILED, OFPPMFC_BAD_HW_ADDR); | |
2661 | } else { | |
2662 | update_port_config(p, port, ntohl(opm->config), ntohl(opm->mask)); | |
2663 | if (opm->advertise) { | |
2664 | netdev_set_advertisements(port->netdev, ntohl(opm->advertise)); | |
2665 | } | |
2666 | } | |
2667 | return 0; | |
2668 | } | |
2669 | ||
2670 | static struct ofpbuf * | |
2671 | make_stats_reply(uint32_t xid, uint16_t type, size_t body_len) | |
2672 | { | |
2673 | struct ofp_stats_reply *osr; | |
2674 | struct ofpbuf *msg; | |
2675 | ||
2676 | msg = ofpbuf_new(MIN(sizeof *osr + body_len, UINT16_MAX)); | |
2677 | osr = put_openflow_xid(sizeof *osr, OFPT_STATS_REPLY, xid, msg); | |
2678 | osr->type = type; | |
2679 | osr->flags = htons(0); | |
2680 | return msg; | |
2681 | } | |
2682 | ||
2683 | static struct ofpbuf * | |
2684 | start_stats_reply(const struct ofp_stats_request *request, size_t body_len) | |
2685 | { | |
2686 | return make_stats_reply(request->header.xid, request->type, body_len); | |
2687 | } | |
2688 | ||
2689 | static void * | |
2690 | append_stats_reply(size_t nbytes, struct ofconn *ofconn, struct ofpbuf **msgp) | |
2691 | { | |
2692 | struct ofpbuf *msg = *msgp; | |
2693 | assert(nbytes <= UINT16_MAX - sizeof(struct ofp_stats_reply)); | |
2694 | if (nbytes + msg->size > UINT16_MAX) { | |
2695 | struct ofp_stats_reply *reply = msg->data; | |
2696 | reply->flags = htons(OFPSF_REPLY_MORE); | |
2697 | *msgp = make_stats_reply(reply->header.xid, reply->type, nbytes); | |
2698 | queue_tx(msg, ofconn, ofconn->reply_counter); | |
2699 | } | |
2700 | return ofpbuf_put_uninit(*msgp, nbytes); | |
2701 | } | |
2702 | ||
2703 | static int | |
2704 | handle_desc_stats_request(struct ofproto *p, struct ofconn *ofconn, | |
2705 | struct ofp_stats_request *request) | |
2706 | { | |
2707 | struct ofp_desc_stats *ods; | |
2708 | struct ofpbuf *msg; | |
2709 | ||
2710 | msg = start_stats_reply(request, sizeof *ods); | |
2711 | ods = append_stats_reply(sizeof *ods, ofconn, &msg); | |
5a719c38 JP |
2712 | memset(ods, 0, sizeof *ods); |
2713 | ovs_strlcpy(ods->mfr_desc, p->mfr_desc, sizeof ods->mfr_desc); | |
2714 | ovs_strlcpy(ods->hw_desc, p->hw_desc, sizeof ods->hw_desc); | |
2715 | ovs_strlcpy(ods->sw_desc, p->sw_desc, sizeof ods->sw_desc); | |
2716 | ovs_strlcpy(ods->serial_num, p->serial_desc, sizeof ods->serial_num); | |
2717 | ovs_strlcpy(ods->dp_desc, p->dp_desc, sizeof ods->dp_desc); | |
064af421 BP |
2718 | queue_tx(msg, ofconn, ofconn->reply_counter); |
2719 | ||
2720 | return 0; | |
2721 | } | |
2722 | ||
2723 | static void | |
2724 | count_subrules(struct cls_rule *cls_rule, void *n_subrules_) | |
2725 | { | |
2726 | struct rule *rule = rule_from_cls_rule(cls_rule); | |
2727 | int *n_subrules = n_subrules_; | |
2728 | ||
2729 | if (rule->super) { | |
2730 | (*n_subrules)++; | |
2731 | } | |
2732 | } | |
2733 | ||
2734 | static int | |
2735 | handle_table_stats_request(struct ofproto *p, struct ofconn *ofconn, | |
2736 | struct ofp_stats_request *request) | |
2737 | { | |
2738 | struct ofp_table_stats *ots; | |
2739 | struct ofpbuf *msg; | |
2740 | struct odp_stats dpstats; | |
2741 | int n_exact, n_subrules, n_wild; | |
2742 | ||
2743 | msg = start_stats_reply(request, sizeof *ots * 2); | |
2744 | ||
2745 | /* Count rules of various kinds. */ | |
2746 | n_subrules = 0; | |
2747 | classifier_for_each(&p->cls, CLS_INC_EXACT, count_subrules, &n_subrules); | |
2748 | n_exact = classifier_count_exact(&p->cls) - n_subrules; | |
2749 | n_wild = classifier_count(&p->cls) - classifier_count_exact(&p->cls); | |
2750 | ||
2751 | /* Hash table. */ | |
c228a364 | 2752 | dpif_get_dp_stats(p->dpif, &dpstats); |
064af421 BP |
2753 | ots = append_stats_reply(sizeof *ots, ofconn, &msg); |
2754 | memset(ots, 0, sizeof *ots); | |
2755 | ots->table_id = TABLEID_HASH; | |
2756 | strcpy(ots->name, "hash"); | |
2757 | ots->wildcards = htonl(0); | |
2758 | ots->max_entries = htonl(dpstats.max_capacity); | |
2759 | ots->active_count = htonl(n_exact); | |
2760 | ots->lookup_count = htonll(dpstats.n_frags + dpstats.n_hit + | |
2761 | dpstats.n_missed); | |
2762 | ots->matched_count = htonll(dpstats.n_hit); /* XXX */ | |
2763 | ||
2764 | /* Classifier table. */ | |
2765 | ots = append_stats_reply(sizeof *ots, ofconn, &msg); | |
2766 | memset(ots, 0, sizeof *ots); | |
2767 | ots->table_id = TABLEID_CLASSIFIER; | |
2768 | strcpy(ots->name, "classifier"); | |
659586ef JG |
2769 | ots->wildcards = p->tun_id_from_cookie ? htonl(OVSFW_ALL) |
2770 | : htonl(OFPFW_ALL); | |
064af421 BP |
2771 | ots->max_entries = htonl(65536); |
2772 | ots->active_count = htonl(n_wild); | |
2773 | ots->lookup_count = htonll(0); /* XXX */ | |
2774 | ots->matched_count = htonll(0); /* XXX */ | |
2775 | ||
2776 | queue_tx(msg, ofconn, ofconn->reply_counter); | |
2777 | return 0; | |
2778 | } | |
2779 | ||
abaad8cf JP |
2780 | static void |
2781 | append_port_stat(struct ofport *port, uint16_t port_no, struct ofconn *ofconn, | |
a4948b95 | 2782 | struct ofpbuf **msgp) |
abaad8cf JP |
2783 | { |
2784 | struct netdev_stats stats; | |
2785 | struct ofp_port_stats *ops; | |
2786 | ||
2787 | /* Intentionally ignore return value, since errors will set | |
2788 | * 'stats' to all-1s, which is correct for OpenFlow, and | |
2789 | * netdev_get_stats() will log errors. */ | |
2790 | netdev_get_stats(port->netdev, &stats); | |
2791 | ||
a4948b95 | 2792 | ops = append_stats_reply(sizeof *ops, ofconn, msgp); |
abaad8cf JP |
2793 | ops->port_no = htons(odp_port_to_ofp_port(port_no)); |
2794 | memset(ops->pad, 0, sizeof ops->pad); | |
2795 | ops->rx_packets = htonll(stats.rx_packets); | |
2796 | ops->tx_packets = htonll(stats.tx_packets); | |
2797 | ops->rx_bytes = htonll(stats.rx_bytes); | |
2798 | ops->tx_bytes = htonll(stats.tx_bytes); | |
2799 | ops->rx_dropped = htonll(stats.rx_dropped); | |
2800 | ops->tx_dropped = htonll(stats.tx_dropped); | |
2801 | ops->rx_errors = htonll(stats.rx_errors); | |
2802 | ops->tx_errors = htonll(stats.tx_errors); | |
2803 | ops->rx_frame_err = htonll(stats.rx_frame_errors); | |
2804 | ops->rx_over_err = htonll(stats.rx_over_errors); | |
2805 | ops->rx_crc_err = htonll(stats.rx_crc_errors); | |
2806 | ops->collisions = htonll(stats.collisions); | |
2807 | } | |
2808 | ||
064af421 BP |
2809 | static int |
2810 | handle_port_stats_request(struct ofproto *p, struct ofconn *ofconn, | |
abaad8cf JP |
2811 | struct ofp_stats_request *osr, |
2812 | size_t arg_size) | |
064af421 | 2813 | { |
abaad8cf | 2814 | struct ofp_port_stats_request *psr; |
064af421 BP |
2815 | struct ofp_port_stats *ops; |
2816 | struct ofpbuf *msg; | |
2817 | struct ofport *port; | |
2818 | unsigned int port_no; | |
2819 | ||
abaad8cf JP |
2820 | if (arg_size != sizeof *psr) { |
2821 | return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN); | |
2822 | } | |
2823 | psr = (struct ofp_port_stats_request *) osr->body; | |
2824 | ||
2825 | msg = start_stats_reply(osr, sizeof *ops * 16); | |
2826 | if (psr->port_no != htons(OFPP_NONE)) { | |
2827 | port = port_array_get(&p->ports, | |
2828 | ofp_port_to_odp_port(ntohs(psr->port_no))); | |
2829 | if (port) { | |
a4948b95 | 2830 | append_port_stat(port, ntohs(psr->port_no), ofconn, &msg); |
abaad8cf JP |
2831 | } |
2832 | } else { | |
2833 | PORT_ARRAY_FOR_EACH (port, &p->ports, port_no) { | |
a4948b95 | 2834 | append_port_stat(port, port_no, ofconn, &msg); |
abaad8cf | 2835 | } |
064af421 BP |
2836 | } |
2837 | ||
2838 | queue_tx(msg, ofconn, ofconn->reply_counter); | |
2839 | return 0; | |
2840 | } | |
2841 | ||
2842 | struct flow_stats_cbdata { | |
2843 | struct ofproto *ofproto; | |
2844 | struct ofconn *ofconn; | |
2845 | uint16_t out_port; | |
2846 | struct ofpbuf *msg; | |
2847 | }; | |
2848 | ||
01149cfd BP |
2849 | /* Obtains statistic counters for 'rule' within 'p' and stores them into |
2850 | * '*packet_countp' and '*byte_countp'. If 'rule' is a wildcarded rule, the | |
2851 | * returned statistic include statistics for all of 'rule''s subrules. */ | |
064af421 BP |
2852 | static void |
2853 | query_stats(struct ofproto *p, struct rule *rule, | |
2854 | uint64_t *packet_countp, uint64_t *byte_countp) | |
2855 | { | |
2856 | uint64_t packet_count, byte_count; | |
2857 | struct rule *subrule; | |
2858 | struct odp_flow *odp_flows; | |
2859 | size_t n_odp_flows; | |
2860 | ||
01149cfd BP |
2861 | /* Start from historical data for 'rule' itself that are no longer tracked |
2862 | * by the datapath. This counts, for example, subrules that have | |
2863 | * expired. */ | |
b3137fe8 JG |
2864 | packet_count = rule->packet_count; |
2865 | byte_count = rule->byte_count; | |
2866 | ||
01149cfd BP |
2867 | /* Prepare to ask the datapath for statistics on 'rule', or if it is |
2868 | * wildcarded then on all of its subrules. | |
2869 | * | |
2870 | * Also, add any statistics that are not tracked by the datapath for each | |
2871 | * subrule. This includes, for example, statistics for packets that were | |
2872 | * executed "by hand" by ofproto via dpif_execute() but must be accounted | |
2873 | * to a flow. */ | |
064af421 | 2874 | n_odp_flows = rule->cr.wc.wildcards ? list_size(&rule->list) : 1; |
ec6fde61 | 2875 | odp_flows = xzalloc(n_odp_flows * sizeof *odp_flows); |
064af421 BP |
2876 | if (rule->cr.wc.wildcards) { |
2877 | size_t i = 0; | |
2878 | LIST_FOR_EACH (subrule, struct rule, list, &rule->list) { | |
2879 | odp_flows[i++].key = subrule->cr.flow; | |
b3137fe8 JG |
2880 | packet_count += subrule->packet_count; |
2881 | byte_count += subrule->byte_count; | |
064af421 BP |
2882 | } |
2883 | } else { | |
2884 | odp_flows[0].key = rule->cr.flow; | |
2885 | } | |
2886 | ||
28998b22 | 2887 | /* Fetch up-to-date statistics from the datapath and add them in. */ |
c228a364 | 2888 | if (!dpif_flow_get_multiple(p->dpif, odp_flows, n_odp_flows)) { |
064af421 BP |
2889 | size_t i; |
2890 | for (i = 0; i < n_odp_flows; i++) { | |
2891 | struct odp_flow *odp_flow = &odp_flows[i]; | |
2892 | packet_count += odp_flow->stats.n_packets; | |
2893 | byte_count += odp_flow->stats.n_bytes; | |
2894 | } | |
2895 | } | |
2896 | free(odp_flows); | |
2897 | ||
01149cfd | 2898 | /* Return the stats to the caller. */ |
064af421 BP |
2899 | *packet_countp = packet_count; |
2900 | *byte_countp = byte_count; | |
2901 | } | |
2902 | ||
2903 | static void | |
2904 | flow_stats_cb(struct cls_rule *rule_, void *cbdata_) | |
2905 | { | |
2906 | struct rule *rule = rule_from_cls_rule(rule_); | |
2907 | struct flow_stats_cbdata *cbdata = cbdata_; | |
2908 | struct ofp_flow_stats *ofs; | |
2909 | uint64_t packet_count, byte_count; | |
2910 | size_t act_len, len; | |
26c3f94a JP |
2911 | long long int tdiff = time_msec() - rule->created; |
2912 | uint32_t sec = tdiff / 1000; | |
2913 | uint32_t msec = tdiff - (sec * 1000); | |
064af421 BP |
2914 | |
2915 | if (rule_is_hidden(rule) || !rule_has_out_port(rule, cbdata->out_port)) { | |
2916 | return; | |
2917 | } | |
2918 | ||
2919 | act_len = sizeof *rule->actions * rule->n_actions; | |
2920 | len = offsetof(struct ofp_flow_stats, actions) + act_len; | |
2921 | ||
2922 | query_stats(cbdata->ofproto, rule, &packet_count, &byte_count); | |
2923 | ||
2924 | ofs = append_stats_reply(len, cbdata->ofconn, &cbdata->msg); | |
2925 | ofs->length = htons(len); | |
2926 | ofs->table_id = rule->cr.wc.wildcards ? TABLEID_CLASSIFIER : TABLEID_HASH; | |
2927 | ofs->pad = 0; | |
659586ef JG |
2928 | flow_to_match(&rule->cr.flow, rule->cr.wc.wildcards, |
2929 | cbdata->ofproto->tun_id_from_cookie, &ofs->match); | |
26c3f94a JP |
2930 | ofs->duration_sec = htonl(sec); |
2931 | ofs->duration_nsec = htonl(msec * 1000000); | |
39997502 | 2932 | ofs->cookie = rule->flow_cookie; |
064af421 BP |
2933 | ofs->priority = htons(rule->cr.priority); |
2934 | ofs->idle_timeout = htons(rule->idle_timeout); | |
2935 | ofs->hard_timeout = htons(rule->hard_timeout); | |
39997502 | 2936 | memset(ofs->pad2, 0, sizeof ofs->pad2); |
064af421 BP |
2937 | ofs->packet_count = htonll(packet_count); |
2938 | ofs->byte_count = htonll(byte_count); | |
2939 | memcpy(ofs->actions, rule->actions, act_len); | |
2940 | } | |
2941 | ||
2942 | static int | |
2943 | table_id_to_include(uint8_t table_id) | |
2944 | { | |
2945 | return (table_id == TABLEID_HASH ? CLS_INC_EXACT | |
2946 | : table_id == TABLEID_CLASSIFIER ? CLS_INC_WILD | |
2947 | : table_id == 0xff ? CLS_INC_ALL | |
2948 | : 0); | |
2949 | } | |
2950 | ||
2951 | static int | |
2952 | handle_flow_stats_request(struct ofproto *p, struct ofconn *ofconn, | |
2953 | const struct ofp_stats_request *osr, | |
2954 | size_t arg_size) | |
2955 | { | |
2956 | struct ofp_flow_stats_request *fsr; | |
2957 | struct flow_stats_cbdata cbdata; | |
2958 | struct cls_rule target; | |
2959 | ||
2960 | if (arg_size != sizeof *fsr) { | |
49bdc010 | 2961 | return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN); |
064af421 BP |
2962 | } |
2963 | fsr = (struct ofp_flow_stats_request *) osr->body; | |
2964 | ||
2965 | COVERAGE_INC(ofproto_flows_req); | |
2966 | cbdata.ofproto = p; | |
2967 | cbdata.ofconn = ofconn; | |
2968 | cbdata.out_port = fsr->out_port; | |
2969 | cbdata.msg = start_stats_reply(osr, 1024); | |
659586ef | 2970 | cls_rule_from_match(&fsr->match, 0, false, 0, &target); |
064af421 BP |
2971 | classifier_for_each_match(&p->cls, &target, |
2972 | table_id_to_include(fsr->table_id), | |
2973 | flow_stats_cb, &cbdata); | |
2974 | queue_tx(cbdata.msg, ofconn, ofconn->reply_counter); | |
2975 | return 0; | |
2976 | } | |
2977 | ||
4f2cad2c JP |
2978 | struct flow_stats_ds_cbdata { |
2979 | struct ofproto *ofproto; | |
2980 | struct ds *results; | |
2981 | }; | |
2982 | ||
2983 | static void | |
2984 | flow_stats_ds_cb(struct cls_rule *rule_, void *cbdata_) | |
2985 | { | |
2986 | struct rule *rule = rule_from_cls_rule(rule_); | |
2987 | struct flow_stats_ds_cbdata *cbdata = cbdata_; | |
2988 | struct ds *results = cbdata->results; | |
2989 | struct ofp_match match; | |
2990 | uint64_t packet_count, byte_count; | |
2991 | size_t act_len = sizeof *rule->actions * rule->n_actions; | |
2992 | ||
2993 | /* Don't report on subrules. */ | |
2994 | if (rule->super != NULL) { | |
2995 | return; | |
2996 | } | |
2997 | ||
2998 | query_stats(cbdata->ofproto, rule, &packet_count, &byte_count); | |
659586ef JG |
2999 | flow_to_match(&rule->cr.flow, rule->cr.wc.wildcards, |
3000 | cbdata->ofproto->tun_id_from_cookie, &match); | |
4f2cad2c JP |
3001 | |
3002 | ds_put_format(results, "duration=%llds, ", | |
3003 | (time_msec() - rule->created) / 1000); | |
52ae00b3 | 3004 | ds_put_format(results, "priority=%u, ", rule->cr.priority); |
4f2cad2c JP |
3005 | ds_put_format(results, "n_packets=%"PRIu64", ", packet_count); |
3006 | ds_put_format(results, "n_bytes=%"PRIu64", ", byte_count); | |
3007 | ofp_print_match(results, &match, true); | |
3008 | ofp_print_actions(results, &rule->actions->header, act_len); | |
3009 | ds_put_cstr(results, "\n"); | |
3010 | } | |
3011 | ||
3012 | /* Adds a pretty-printed description of all flows to 'results', including | |
3013 | * those marked hidden by secchan (e.g., by in-band control). */ | |
3014 | void | |
3015 | ofproto_get_all_flows(struct ofproto *p, struct ds *results) | |
3016 | { | |
3017 | struct ofp_match match; | |
3018 | struct cls_rule target; | |
3019 | struct flow_stats_ds_cbdata cbdata; | |
3020 | ||
3021 | memset(&match, 0, sizeof match); | |
659586ef | 3022 | match.wildcards = htonl(OVSFW_ALL); |
4f2cad2c JP |
3023 | |
3024 | cbdata.ofproto = p; | |
3025 | cbdata.results = results; | |
3026 | ||
659586ef | 3027 | cls_rule_from_match(&match, 0, false, 0, &target); |
4f2cad2c JP |
3028 | classifier_for_each_match(&p->cls, &target, CLS_INC_ALL, |
3029 | flow_stats_ds_cb, &cbdata); | |
3030 | } | |
3031 | ||
064af421 BP |
3032 | struct aggregate_stats_cbdata { |
3033 | struct ofproto *ofproto; | |
3034 | uint16_t out_port; | |
3035 | uint64_t packet_count; | |
3036 | uint64_t byte_count; | |
3037 | uint32_t n_flows; | |
3038 | }; | |
3039 | ||
3040 | static void | |
3041 | aggregate_stats_cb(struct cls_rule *rule_, void *cbdata_) | |
3042 | { | |
3043 | struct rule *rule = rule_from_cls_rule(rule_); | |
3044 | struct aggregate_stats_cbdata *cbdata = cbdata_; | |
3045 | uint64_t packet_count, byte_count; | |
3046 | ||
3047 | if (rule_is_hidden(rule) || !rule_has_out_port(rule, cbdata->out_port)) { | |
3048 | return; | |
3049 | } | |
3050 | ||
3051 | query_stats(cbdata->ofproto, rule, &packet_count, &byte_count); | |
3052 | ||
3053 | cbdata->packet_count += packet_count; | |
3054 | cbdata->byte_count += byte_count; | |
3055 | cbdata->n_flows++; | |
3056 | } | |
3057 | ||
3058 | static int | |
3059 | handle_aggregate_stats_request(struct ofproto *p, struct ofconn *ofconn, | |
3060 | const struct ofp_stats_request *osr, | |
3061 | size_t arg_size) | |
3062 | { | |
3063 | struct ofp_aggregate_stats_request *asr; | |
3064 | struct ofp_aggregate_stats_reply *reply; | |
3065 | struct aggregate_stats_cbdata cbdata; | |
3066 | struct cls_rule target; | |
3067 | struct ofpbuf *msg; | |
3068 | ||
3069 | if (arg_size != sizeof *asr) { | |
49bdc010 | 3070 | return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN); |
064af421 BP |
3071 | } |
3072 | asr = (struct ofp_aggregate_stats_request *) osr->body; | |
3073 | ||
3074 | COVERAGE_INC(ofproto_agg_request); | |
3075 | cbdata.ofproto = p; | |
3076 | cbdata.out_port = asr->out_port; | |
3077 | cbdata.packet_count = 0; | |
3078 | cbdata.byte_count = 0; | |
3079 | cbdata.n_flows = 0; | |
659586ef | 3080 | cls_rule_from_match(&asr->match, 0, false, 0, &target); |
064af421 BP |
3081 | classifier_for_each_match(&p->cls, &target, |
3082 | table_id_to_include(asr->table_id), | |
3083 | aggregate_stats_cb, &cbdata); | |
3084 | ||
3085 | msg = start_stats_reply(osr, sizeof *reply); | |
3086 | reply = append_stats_reply(sizeof *reply, ofconn, &msg); | |
3087 | reply->flow_count = htonl(cbdata.n_flows); | |
3088 | reply->packet_count = htonll(cbdata.packet_count); | |
3089 | reply->byte_count = htonll(cbdata.byte_count); | |
3090 | queue_tx(msg, ofconn, ofconn->reply_counter); | |
3091 | return 0; | |
3092 | } | |
3093 | ||
3094 | static int | |
3095 | handle_stats_request(struct ofproto *p, struct ofconn *ofconn, | |
3096 | struct ofp_header *oh) | |
3097 | { | |
3098 | struct ofp_stats_request *osr; | |
3099 | size_t arg_size; | |
3100 | int error; | |
3101 | ||
3102 | error = check_ofp_message_array(oh, OFPT_STATS_REQUEST, sizeof *osr, | |
3103 | 1, &arg_size); | |
3104 | if (error) { | |
3105 | return error; | |
3106 | } | |
3107 | osr = (struct ofp_stats_request *) oh; | |
3108 | ||
3109 | switch (ntohs(osr->type)) { | |
3110 | case OFPST_DESC: | |
3111 | return handle_desc_stats_request(p, ofconn, osr); | |
3112 | ||
3113 | case OFPST_FLOW: | |
3114 | return handle_flow_stats_request(p, ofconn, osr, arg_size); | |
3115 | ||
3116 | case OFPST_AGGREGATE: | |
3117 | return handle_aggregate_stats_request(p, ofconn, osr, arg_size); | |
3118 | ||
3119 | case OFPST_TABLE: | |
3120 | return handle_table_stats_request(p, ofconn, osr); | |
3121 | ||
3122 | case OFPST_PORT: | |
abaad8cf | 3123 | return handle_port_stats_request(p, ofconn, osr, arg_size); |
064af421 BP |
3124 | |
3125 | case OFPST_VENDOR: | |
3126 | return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_VENDOR); | |
3127 | ||
3128 | default: | |
3129 | return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_STAT); | |
3130 | } | |
3131 | } | |
3132 | ||
3133 | static long long int | |
3134 | msec_from_nsec(uint64_t sec, uint32_t nsec) | |
3135 | { | |
3136 | return !sec ? 0 : sec * 1000 + nsec / 1000000; | |
3137 | } | |
3138 | ||
3139 | static void | |
0193b2af JG |
3140 | update_time(struct ofproto *ofproto, struct rule *rule, |
3141 | const struct odp_flow_stats *stats) | |
064af421 BP |
3142 | { |
3143 | long long int used = msec_from_nsec(stats->used_sec, stats->used_nsec); | |
3144 | if (used > rule->used) { | |
3145 | rule->used = used; | |
4836f9f2 JP |
3146 | if (rule->super && used > rule->super->used) { |
3147 | rule->super->used = used; | |
3148 | } | |
0193b2af | 3149 | netflow_flow_update_time(ofproto->netflow, &rule->nf_flow, used); |
064af421 BP |
3150 | } |
3151 | } | |
3152 | ||
3153 | static void | |
0193b2af JG |
3154 | update_stats(struct ofproto *ofproto, struct rule *rule, |
3155 | const struct odp_flow_stats *stats) | |
064af421 | 3156 | { |
064af421 | 3157 | if (stats->n_packets) { |
0193b2af JG |
3158 | update_time(ofproto, rule, stats); |
3159 | rule->packet_count += stats->n_packets; | |
3160 | rule->byte_count += stats->n_bytes; | |
3161 | netflow_flow_update_flags(&rule->nf_flow, stats->ip_tos, | |
3162 | stats->tcp_flags); | |
064af421 BP |
3163 | } |
3164 | } | |
3165 | ||
79eee1eb BP |
3166 | /* Implements OFPFC_ADD and the cases for OFPFC_MODIFY and OFPFC_MODIFY_STRICT |
3167 | * in which no matching flow already exists in the flow table. | |
3168 | * | |
3169 | * Adds the flow specified by 'ofm', which is followed by 'n_actions' | |
3170 | * ofp_actions, to 'p''s flow table. Returns 0 on success or an OpenFlow error | |
3171 | * code as encoded by ofp_mkerr() on failure. | |
3172 | * | |
3173 | * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id, | |
3174 | * if any. */ | |
064af421 BP |
3175 | static int |
3176 | add_flow(struct ofproto *p, struct ofconn *ofconn, | |
79eee1eb | 3177 | const struct ofp_flow_mod *ofm, size_t n_actions) |
064af421 BP |
3178 | { |
3179 | struct ofpbuf *packet; | |
3180 | struct rule *rule; | |
3181 | uint16_t in_port; | |
3182 | int error; | |
3183 | ||
49bdc010 JP |
3184 | if (ofm->flags & htons(OFPFF_CHECK_OVERLAP)) { |
3185 | flow_t flow; | |
3186 | uint32_t wildcards; | |
3187 | ||
659586ef JG |
3188 | flow_from_match(&ofm->match, p->tun_id_from_cookie, ofm->cookie, |
3189 | &flow, &wildcards); | |
49bdc010 JP |
3190 | if (classifier_rule_overlaps(&p->cls, &flow, wildcards, |
3191 | ntohs(ofm->priority))) { | |
3192 | return ofp_mkerr(OFPET_FLOW_MOD_FAILED, OFPFMFC_OVERLAP); | |
3193 | } | |
3194 | } | |
3195 | ||
0193b2af | 3196 | rule = rule_create(p, NULL, (const union ofp_action *) ofm->actions, |
064af421 | 3197 | n_actions, ntohs(ofm->idle_timeout), |
39997502 | 3198 | ntohs(ofm->hard_timeout), ofm->cookie, |
ca069229 | 3199 | ofm->flags & htons(OFPFF_SEND_FLOW_REM)); |
659586ef JG |
3200 | cls_rule_from_match(&ofm->match, ntohs(ofm->priority), |
3201 | p->tun_id_from_cookie, ofm->cookie, &rule->cr); | |
064af421 | 3202 | |
064af421 BP |
3203 | error = 0; |
3204 | if (ofm->buffer_id != htonl(UINT32_MAX)) { | |
3205 | error = pktbuf_retrieve(ofconn->pktbuf, ntohl(ofm->buffer_id), | |
3206 | &packet, &in_port); | |
212fe71c BP |
3207 | } else { |
3208 | packet = NULL; | |
165cd8a3 | 3209 | in_port = UINT16_MAX; |
064af421 BP |
3210 | } |
3211 | ||
3212 | rule_insert(p, rule, packet, in_port); | |
3213 | ofpbuf_delete(packet); | |
3214 | return error; | |
3215 | } | |
3216 | ||
79eee1eb BP |
3217 | static struct rule * |
3218 | find_flow_strict(struct ofproto *p, const struct ofp_flow_mod *ofm) | |
064af421 | 3219 | { |
064af421 BP |
3220 | uint32_t wildcards; |
3221 | flow_t flow; | |
3222 | ||
659586ef JG |
3223 | flow_from_match(&ofm->match, p->tun_id_from_cookie, ofm->cookie, |
3224 | &flow, &wildcards); | |
79eee1eb | 3225 | return rule_from_cls_rule(classifier_find_rule_exactly( |
064af421 BP |
3226 | &p->cls, &flow, wildcards, |
3227 | ntohs(ofm->priority))); | |
79eee1eb | 3228 | } |
064af421 | 3229 | |
79eee1eb BP |
3230 | static int |
3231 | send_buffered_packet(struct ofproto *ofproto, struct ofconn *ofconn, | |
3232 | struct rule *rule, const struct ofp_flow_mod *ofm) | |
3233 | { | |
3234 | struct ofpbuf *packet; | |
3235 | uint16_t in_port; | |
3236 | flow_t flow; | |
3237 | int error; | |
064af421 | 3238 | |
79eee1eb BP |
3239 | if (ofm->buffer_id == htonl(UINT32_MAX)) { |
3240 | return 0; | |
064af421 | 3241 | } |
79eee1eb BP |
3242 | |
3243 | error = pktbuf_retrieve(ofconn->pktbuf, ntohl(ofm->buffer_id), | |
3244 | &packet, &in_port); | |
3245 | if (error) { | |
3246 | return error; | |
3247 | } | |
3248 | ||
659586ef | 3249 | flow_extract(packet, 0, in_port, &flow); |
79eee1eb BP |
3250 | rule_execute(ofproto, rule, packet, &flow); |
3251 | ofpbuf_delete(packet); | |
3252 | ||
064af421 BP |
3253 | return 0; |
3254 | } | |
79eee1eb BP |
3255 | \f |
3256 | /* OFPFC_MODIFY and OFPFC_MODIFY_STRICT. */ | |
064af421 BP |
3257 | |
3258 | struct modify_flows_cbdata { | |
3259 | struct ofproto *ofproto; | |
3260 | const struct ofp_flow_mod *ofm; | |
064af421 | 3261 | size_t n_actions; |
79eee1eb | 3262 | struct rule *match; |
064af421 BP |
3263 | }; |
3264 | ||
79eee1eb BP |
3265 | static int modify_flow(struct ofproto *, const struct ofp_flow_mod *, |
3266 | size_t n_actions, struct rule *); | |
3267 | static void modify_flows_cb(struct cls_rule *, void *cbdata_); | |
3268 | ||
3269 | /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code as | |
3270 | * encoded by ofp_mkerr() on failure. | |
3271 | * | |
3272 | * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id, | |
3273 | * if any. */ | |
3274 | static int | |
3275 | modify_flows_loose(struct ofproto *p, struct ofconn *ofconn, | |
3276 | const struct ofp_flow_mod *ofm, size_t n_actions) | |
3277 | { | |
3278 | struct modify_flows_cbdata cbdata; | |
3279 | struct cls_rule target; | |
3280 | ||
3281 | cbdata.ofproto = p; | |
3282 | cbdata.ofm = ofm; | |
3283 | cbdata.n_actions = n_actions; | |
3284 | cbdata.match = NULL; | |
3285 | ||
659586ef JG |
3286 | cls_rule_from_match(&ofm->match, 0, p->tun_id_from_cookie, ofm->cookie, |
3287 | &target); | |
79eee1eb BP |
3288 | |
3289 | classifier_for_each_match(&p->cls, &target, CLS_INC_ALL, | |
3290 | modify_flows_cb, &cbdata); | |
3291 | if (cbdata.match) { | |
3292 | /* This credits the packet to whichever flow happened to happened to | |
3293 | * match last. That's weird. Maybe we should do a lookup for the | |
3294 | * flow that actually matches the packet? Who knows. */ | |
3295 | send_buffered_packet(p, ofconn, cbdata.match, ofm); | |
3296 | return 0; | |
3297 | } else { | |
3298 | return add_flow(p, ofconn, ofm, n_actions); | |
3299 | } | |
3300 | } | |
3301 | ||
3302 | /* Implements OFPFC_MODIFY_STRICT. Returns 0 on success or an OpenFlow error | |
3303 | * code as encoded by ofp_mkerr() on failure. | |
3304 | * | |
3305 | * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id, | |
3306 | * if any. */ | |
3307 | static int | |
3308 | modify_flow_strict(struct ofproto *p, struct ofconn *ofconn, | |
3309 | struct ofp_flow_mod *ofm, size_t n_actions) | |
3310 | { | |
3311 | struct rule *rule = find_flow_strict(p, ofm); | |
3312 | if (rule && !rule_is_hidden(rule)) { | |
3313 | modify_flow(p, ofm, n_actions, rule); | |
3314 | return send_buffered_packet(p, ofconn, rule, ofm); | |
3315 | } else { | |
3316 | return add_flow(p, ofconn, ofm, n_actions); | |
3317 | } | |
3318 | } | |
3319 | ||
3320 | /* Callback for modify_flows_loose(). */ | |
064af421 BP |
3321 | static void |
3322 | modify_flows_cb(struct cls_rule *rule_, void *cbdata_) | |
3323 | { | |
3324 | struct rule *rule = rule_from_cls_rule(rule_); | |
3325 | struct modify_flows_cbdata *cbdata = cbdata_; | |
3326 | ||
79eee1eb BP |
3327 | if (!rule_is_hidden(rule)) { |
3328 | cbdata->match = rule; | |
3329 | modify_flow(cbdata->ofproto, cbdata->ofm, cbdata->n_actions, rule); | |
064af421 | 3330 | } |
064af421 BP |
3331 | } |
3332 | ||
79eee1eb BP |
3333 | /* Implements core of OFPFC_MODIFY and OFPFC_MODIFY_STRICT where 'rule' has |
3334 | * been identified as a flow in 'p''s flow table to be modified, by changing | |
3335 | * the rule's actions to match those in 'ofm' (which is followed by 'n_actions' | |
3336 | * ofp_action[] structures). */ | |
064af421 | 3337 | static int |
79eee1eb BP |
3338 | modify_flow(struct ofproto *p, const struct ofp_flow_mod *ofm, |
3339 | size_t n_actions, struct rule *rule) | |
064af421 | 3340 | { |
79eee1eb BP |
3341 | size_t actions_len = n_actions * sizeof *rule->actions; |
3342 | ||
3343 | rule->flow_cookie = ofm->cookie; | |
3344 | ||
3345 | /* If the actions are the same, do nothing. */ | |
3346 | if (n_actions == rule->n_actions | |
3347 | && !memcmp(ofm->actions, rule->actions, actions_len)) | |
3348 | { | |
3349 | return 0; | |
3350 | } | |
3351 | ||
3352 | /* Replace actions. */ | |
3353 | free(rule->actions); | |
3354 | rule->actions = xmemdup(ofm->actions, actions_len); | |
3355 | rule->n_actions = n_actions; | |
3356 | ||
3357 | /* Make sure that the datapath gets updated properly. */ | |
3358 | if (rule->cr.wc.wildcards) { | |
3359 | COVERAGE_INC(ofproto_mod_wc_flow); | |
3360 | p->need_revalidate = true; | |
3361 | } else { | |
3362 | rule_update_actions(p, rule); | |
3363 | } | |
3364 | ||
3365 | return 0; | |
3366 | } | |
3367 | \f | |
3368 | /* OFPFC_DELETE implementation. */ | |
3369 | ||
3370 | struct delete_flows_cbdata { | |
3371 | struct ofproto *ofproto; | |
3372 | uint16_t out_port; | |
3373 | }; | |
3374 | ||
3375 | static void delete_flows_cb(struct cls_rule *, void *cbdata_); | |
3376 | static void delete_flow(struct ofproto *, struct rule *, uint16_t out_port); | |
3377 | ||
3378 | /* Implements OFPFC_DELETE. */ | |
3379 | static void | |
3380 | delete_flows_loose(struct ofproto *p, const struct ofp_flow_mod *ofm) | |
3381 | { | |
3382 | struct delete_flows_cbdata cbdata; | |
064af421 BP |
3383 | struct cls_rule target; |
3384 | ||
3385 | cbdata.ofproto = p; | |
79eee1eb | 3386 | cbdata.out_port = ofm->out_port; |
064af421 | 3387 | |
659586ef JG |
3388 | cls_rule_from_match(&ofm->match, 0, p->tun_id_from_cookie, ofm->cookie, |
3389 | &target); | |
064af421 BP |
3390 | |
3391 | classifier_for_each_match(&p->cls, &target, CLS_INC_ALL, | |
79eee1eb | 3392 | delete_flows_cb, &cbdata); |
064af421 BP |
3393 | } |
3394 | ||
79eee1eb BP |
3395 | /* Implements OFPFC_DELETE_STRICT. */ |
3396 | static void | |
3397 | delete_flow_strict(struct ofproto *p, struct ofp_flow_mod *ofm) | |
3398 | { | |
3399 | struct rule *rule = find_flow_strict(p, ofm); | |
3400 | if (rule) { | |
3401 | delete_flow(p, rule, ofm->out_port); | |
3402 | } | |
3403 | } | |
3404 | ||
3405 | /* Callback for delete_flows_loose(). */ | |
3406 | static void | |
3407 | delete_flows_cb(struct cls_rule *rule_, void *cbdata_) | |
3408 | { | |
3409 | struct rule *rule = rule_from_cls_rule(rule_); | |
3410 | struct delete_flows_cbdata *cbdata = cbdata_; | |
3411 | ||
3412 | delete_flow(cbdata->ofproto, rule, cbdata->out_port); | |
3413 | } | |
3414 | ||
3415 | /* Implements core of OFPFC_DELETE and OFPFC_DELETE_STRICT where 'rule' has | |
3416 | * been identified as a flow to delete from 'p''s flow table, by deleting the | |
3417 | * flow and sending out a OFPT_FLOW_REMOVED message to any interested | |
3418 | * controller. | |
3419 | * | |
3420 | * Will not delete 'rule' if it is hidden. Will delete 'rule' only if | |
3421 | * 'out_port' is htons(OFPP_NONE) or if 'rule' actually outputs to the | |
3422 | * specified 'out_port'. */ | |
3423 | static void | |
3424 | delete_flow(struct ofproto *p, struct rule *rule, uint16_t out_port) | |
3425 | { | |
3426 | if (rule_is_hidden(rule)) { | |
3427 | return; | |
3428 | } | |
3429 | ||
3430 | if (out_port != htons(OFPP_NONE) && !rule_has_out_port(rule, out_port)) { | |
3431 | return; | |
3432 | } | |
3433 | ||
3434 | send_flow_removed(p, rule, time_msec(), OFPRR_DELETE); | |
3435 | rule_remove(p, rule); | |
3436 | } | |
3437 | \f | |
064af421 BP |
3438 | static int |
3439 | handle_flow_mod(struct ofproto *p, struct ofconn *ofconn, | |
3440 | struct ofp_flow_mod *ofm) | |
3441 | { | |
3442 | size_t n_actions; | |
3443 | int error; | |
3444 | ||
9deba63b BP |
3445 | error = reject_slave_controller(ofconn, &ofm->header); |
3446 | if (error) { | |
3447 | return error; | |
3448 | } | |
064af421 BP |
3449 | error = check_ofp_message_array(&ofm->header, OFPT_FLOW_MOD, sizeof *ofm, |
3450 | sizeof *ofm->actions, &n_actions); | |
3451 | if (error) { | |
3452 | return error; | |
3453 | } | |
3454 | ||
49bdc010 JP |
3455 | /* We do not support the emergency flow cache. It will hopefully |
3456 | * get dropped from OpenFlow in the near future. */ | |
3457 | if (ofm->flags & htons(OFPFF_EMERG)) { | |
3458 | /* There isn't a good fit for an error code, so just state that the | |
3459 | * flow table is full. */ | |
3460 | return ofp_mkerr(OFPET_FLOW_MOD_FAILED, OFPFMFC_ALL_TABLES_FULL); | |
3461 | } | |
3462 | ||
064af421 BP |
3463 | normalize_match(&ofm->match); |
3464 | if (!ofm->match.wildcards) { | |
3465 | ofm->priority = htons(UINT16_MAX); | |
3466 | } | |
3467 | ||
3468 | error = validate_actions((const union ofp_action *) ofm->actions, | |
3469 | n_actions, p->max_ports); | |
3470 | if (error) { | |
3471 | return error; | |
3472 | } | |
3473 | ||
3474 | switch (ntohs(ofm->command)) { | |
3475 | case OFPFC_ADD: | |
3476 | return add_flow(p, ofconn, ofm, n_actions); | |
3477 | ||
3478 | case OFPFC_MODIFY: | |
79eee1eb | 3479 | return modify_flows_loose(p, ofconn, ofm, n_actions); |
064af421 BP |
3480 | |
3481 | case OFPFC_MODIFY_STRICT: | |
79eee1eb | 3482 | return modify_flow_strict(p, ofconn, ofm, n_actions); |
064af421 BP |
3483 | |
3484 | case OFPFC_DELETE: | |
79eee1eb BP |
3485 | delete_flows_loose(p, ofm); |
3486 | return 0; | |
064af421 BP |
3487 | |
3488 | case OFPFC_DELETE_STRICT: | |
79eee1eb BP |
3489 | delete_flow_strict(p, ofm); |
3490 | return 0; | |
064af421 BP |
3491 | |
3492 | default: | |
3493 | return ofp_mkerr(OFPET_FLOW_MOD_FAILED, OFPFMFC_BAD_COMMAND); | |
3494 | } | |
3495 | } | |
3496 | ||
659586ef JG |
3497 | static int |
3498 | handle_tun_id_from_cookie(struct ofproto *p, struct nxt_tun_id_cookie *msg) | |
3499 | { | |
3500 | int error; | |
3501 | ||
3502 | error = check_ofp_message(&msg->header, OFPT_VENDOR, sizeof *msg); | |
3503 | if (error) { | |
3504 | return error; | |
3505 | } | |
3506 | ||
3507 | p->tun_id_from_cookie = !!msg->set; | |
3508 | return 0; | |
3509 | } | |
3510 | ||
9deba63b BP |
3511 | static int |
3512 | handle_role_request(struct ofproto *ofproto, | |
3513 | struct ofconn *ofconn, struct nicira_header *msg) | |
3514 | { | |
3515 | struct nx_role_request *nrr; | |
3516 | struct nx_role_request *reply; | |
3517 | struct ofpbuf *buf; | |
3518 | uint32_t role; | |
3519 | ||
3520 | if (ntohs(msg->header.length) != sizeof *nrr) { | |
3521 | VLOG_WARN_RL(&rl, "received role request of length %zu (expected %zu)", | |
3522 | ntohs(msg->header.length), sizeof *nrr); | |
3523 | return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN); | |
3524 | } | |
3525 | nrr = (struct nx_role_request *) msg; | |
3526 | ||
3527 | if (ofconn->type != OFCONN_CONTROLLER) { | |
3528 | VLOG_WARN_RL(&rl, "ignoring role request on non-controller " | |
3529 | "connection"); | |
3530 | return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_EPERM); | |
3531 | } | |
3532 | ||
3533 | role = ntohl(nrr->role); | |
3534 | if (role != NX_ROLE_OTHER && role != NX_ROLE_MASTER | |
3535 | && role != NX_ROLE_SLAVE) { | |
3536 | VLOG_WARN_RL(&rl, "received request for unknown role %"PRIu32, role); | |
3537 | ||
3538 | /* There's no good error code for this. */ | |
3539 | return ofp_mkerr(OFPET_BAD_REQUEST, -1); | |
3540 | } | |
3541 | ||
3542 | if (role == NX_ROLE_MASTER) { | |
3543 | struct ofconn *other; | |
3544 | ||
3545 | HMAP_FOR_EACH (other, struct ofconn, hmap_node, | |
3546 | &ofproto->controllers) { | |
3547 | if (other->role == NX_ROLE_MASTER) { | |
3548 | other->role = NX_ROLE_SLAVE; | |
3549 | } | |
3550 | } | |
3551 | } | |
3552 | ofconn->role = role; | |
3553 | ||
3554 | reply = make_openflow_xid(sizeof *reply, OFPT_VENDOR, msg->header.xid, | |
3555 | &buf); | |
3556 | reply->nxh.vendor = htonl(NX_VENDOR_ID); | |
3557 | reply->nxh.subtype = htonl(NXT_ROLE_REPLY); | |
3558 | reply->role = htonl(role); | |
3559 | queue_tx(buf, ofconn, ofconn->reply_counter); | |
3560 | ||
3561 | return 0; | |
3562 | } | |
3563 | ||
064af421 BP |
3564 | static int |
3565 | handle_vendor(struct ofproto *p, struct ofconn *ofconn, void *msg) | |
3566 | { | |
3567 | struct ofp_vendor_header *ovh = msg; | |
3568 | struct nicira_header *nh; | |
3569 | ||
3570 | if (ntohs(ovh->header.length) < sizeof(struct ofp_vendor_header)) { | |
659586ef JG |
3571 | VLOG_WARN_RL(&rl, "received vendor message of length %zu " |
3572 | "(expected at least %zu)", | |
3573 | ntohs(ovh->header.length), sizeof(struct ofp_vendor_header)); | |
49bdc010 | 3574 | return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN); |
064af421 BP |
3575 | } |
3576 | if (ovh->vendor != htonl(NX_VENDOR_ID)) { | |
3577 | return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_VENDOR); | |
3578 | } | |
3579 | if (ntohs(ovh->header.length) < sizeof(struct nicira_header)) { | |
659586ef JG |
3580 | VLOG_WARN_RL(&rl, "received Nicira vendor message of length %zu " |
3581 | "(expected at least %zu)", | |
3582 | ntohs(ovh->header.length), sizeof(struct nicira_header)); | |
49bdc010 | 3583 | return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN); |
064af421 BP |
3584 | } |
3585 | ||
3586 | nh = msg; | |
3587 | switch (ntohl(nh->subtype)) { | |
3588 | case NXT_STATUS_REQUEST: | |
3589 | return switch_status_handle_request(p->switch_status, ofconn->rconn, | |
3590 | msg); | |
659586ef JG |
3591 | |
3592 | case NXT_TUN_ID_FROM_COOKIE: | |
3593 | return handle_tun_id_from_cookie(p, msg); | |
9deba63b BP |
3594 | |
3595 | case NXT_ROLE_REQUEST: | |
3596 | return handle_role_request(p, ofconn, msg); | |
064af421 BP |
3597 | } |
3598 | ||
3599 | return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_SUBTYPE); | |
3600 | } | |
3601 | ||
246e61ea JP |
3602 | static int |
3603 | handle_barrier_request(struct ofconn *ofconn, struct ofp_header *oh) | |
3604 | { | |
3605 | struct ofp_header *ob; | |
3606 | struct ofpbuf *buf; | |
3607 | ||
3608 | /* Currently, everything executes synchronously, so we can just | |
3609 | * immediately send the barrier reply. */ | |
3610 | ob = make_openflow_xid(sizeof *ob, OFPT_BARRIER_REPLY, oh->xid, &buf); | |
3611 | queue_tx(buf, ofconn, ofconn->reply_counter); | |
3612 | return 0; | |
3613 | } | |
3614 | ||
064af421 BP |
3615 | static void |
3616 | handle_openflow(struct ofconn *ofconn, struct ofproto *p, | |
3617 | struct ofpbuf *ofp_msg) | |
3618 | { | |
3619 | struct ofp_header *oh = ofp_msg->data; | |
3620 | int error; | |
3621 | ||
3622 | COVERAGE_INC(ofproto_recv_openflow); | |
3623 | switch (oh->type) { | |
3624 | case OFPT_ECHO_REQUEST: | |
3625 | error = handle_echo_request(ofconn, oh); | |
3626 | break; | |
3627 | ||
3628 | case OFPT_ECHO_REPLY: | |
3629 | error = 0; | |
3630 | break; | |
3631 | ||
3632 | case OFPT_FEATURES_REQUEST: | |
3633 | error = handle_features_request(p, ofconn, oh); | |
3634 | break; | |
3635 | ||
3636 | case OFPT_GET_CONFIG_REQUEST: | |
3637 | error = handle_get_config_request(p, ofconn, oh); | |
3638 | break; | |
3639 | ||
3640 | case OFPT_SET_CONFIG: | |
3641 | error = handle_set_config(p, ofconn, ofp_msg->data); | |
3642 | break; | |
3643 | ||
3644 | case OFPT_PACKET_OUT: | |
3645 | error = handle_packet_out(p, ofconn, ofp_msg->data); | |
3646 | break; | |
3647 | ||
3648 | case OFPT_PORT_MOD: | |
9deba63b | 3649 | error = handle_port_mod(p, ofconn, oh); |
064af421 BP |
3650 | break; |
3651 | ||
3652 | case OFPT_FLOW_MOD: | |
3653 | error = handle_flow_mod(p, ofconn, ofp_msg->data); | |
3654 | break; | |
3655 | ||
3656 | case OFPT_STATS_REQUEST: | |
3657 | error = handle_stats_request(p, ofconn, oh); | |
3658 | break; | |
3659 | ||
3660 | case OFPT_VENDOR: | |
3661 | error = handle_vendor(p, ofconn, ofp_msg->data); | |
3662 | break; | |
3663 | ||
246e61ea JP |
3664 | case OFPT_BARRIER_REQUEST: |
3665 | error = handle_barrier_request(ofconn, oh); | |
3666 | break; | |
3667 | ||
064af421 BP |
3668 | default: |
3669 | if (VLOG_IS_WARN_ENABLED()) { | |
3670 | char *s = ofp_to_string(oh, ntohs(oh->length), 2); | |
3671 | VLOG_DBG_RL(&rl, "OpenFlow message ignored: %s", s); | |
3672 | free(s); | |
3673 | } | |
3674 | error = ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_TYPE); | |
3675 | break; | |
3676 | } | |
3677 | ||
3678 | if (error) { | |
3679 | send_error_oh(ofconn, ofp_msg->data, error); | |
3680 | } | |
3681 | } | |
3682 | \f | |
3683 | static void | |
72b06300 | 3684 | handle_odp_miss_msg(struct ofproto *p, struct ofpbuf *packet) |
064af421 BP |
3685 | { |
3686 | struct odp_msg *msg = packet->data; | |
064af421 BP |
3687 | struct rule *rule; |
3688 | struct ofpbuf payload; | |
3689 | flow_t flow; | |
3690 | ||
064af421 BP |
3691 | payload.data = msg + 1; |
3692 | payload.size = msg->length - sizeof *msg; | |
659586ef | 3693 | flow_extract(&payload, msg->arg, msg->port, &flow); |
064af421 | 3694 | |
0ad9b732 JP |
3695 | /* Check with in-band control to see if this packet should be sent |
3696 | * to the local port regardless of the flow table. */ | |
3697 | if (in_band_msg_in_hook(p->in_band, &flow, &payload)) { | |
3698 | union odp_action action; | |
3699 | ||
3700 | memset(&action, 0, sizeof(action)); | |
3701 | action.output.type = ODPAT_OUTPUT; | |
3702 | action.output.port = ODPP_LOCAL; | |
f1acd62b | 3703 | dpif_execute(p->dpif, flow.in_port, &action, 1, &payload); |
0ad9b732 JP |
3704 | } |
3705 | ||
064af421 BP |
3706 | rule = lookup_valid_rule(p, &flow); |
3707 | if (!rule) { | |
3708 | /* Don't send a packet-in if OFPPC_NO_PACKET_IN asserted. */ | |
3709 | struct ofport *port = port_array_get(&p->ports, msg->port); | |
3710 | if (port) { | |
3711 | if (port->opp.config & OFPPC_NO_PACKET_IN) { | |
3712 | COVERAGE_INC(ofproto_no_packet_in); | |
3713 | /* XXX install 'drop' flow entry */ | |
3714 | ofpbuf_delete(packet); | |
3715 | return; | |
3716 | } | |
3717 | } else { | |
3718 | VLOG_WARN_RL(&rl, "packet-in on unknown port %"PRIu16, msg->port); | |
3719 | } | |
3720 | ||
3721 | COVERAGE_INC(ofproto_packet_in); | |
76ce9432 | 3722 | send_packet_in(p, packet); |
064af421 BP |
3723 | return; |
3724 | } | |
3725 | ||
3726 | if (rule->cr.wc.wildcards) { | |
3727 | rule = rule_create_subrule(p, rule, &flow); | |
3728 | rule_make_actions(p, rule, packet); | |
3729 | } else { | |
3730 | if (!rule->may_install) { | |
3731 | /* The rule is not installable, that is, we need to process every | |
3732 | * packet, so process the current packet and set its actions into | |
3733 | * 'subrule'. */ | |
3734 | rule_make_actions(p, rule, packet); | |
3735 | } else { | |
3736 | /* XXX revalidate rule if it needs it */ | |
3737 | } | |
3738 | } | |
3739 | ||
3740 | rule_execute(p, rule, &payload, &flow); | |
3741 | rule_reinstall(p, rule); | |
7778bd15 | 3742 | |
76ce9432 | 3743 | if (rule->super && rule->super->cr.priority == FAIL_OPEN_PRIORITY) { |
7778bd15 BP |
3744 | /* |
3745 | * Extra-special case for fail-open mode. | |
3746 | * | |
3747 | * We are in fail-open mode and the packet matched the fail-open rule, | |
3748 | * but we are connected to a controller too. We should send the packet | |
3749 | * up to the controller in the hope that it will try to set up a flow | |
3750 | * and thereby allow us to exit fail-open. | |
3751 | * | |
3752 | * See the top-level comment in fail-open.c for more information. | |
3753 | */ | |
76ce9432 | 3754 | send_packet_in(p, packet); |
7778bd15 BP |
3755 | } else { |
3756 | ofpbuf_delete(packet); | |
3757 | } | |
064af421 | 3758 | } |
72b06300 BP |
3759 | |
3760 | static void | |
3761 | handle_odp_msg(struct ofproto *p, struct ofpbuf *packet) | |
3762 | { | |
3763 | struct odp_msg *msg = packet->data; | |
3764 | ||
3765 | switch (msg->type) { | |
3766 | case _ODPL_ACTION_NR: | |
3767 | COVERAGE_INC(ofproto_ctlr_action); | |
76ce9432 | 3768 | send_packet_in(p, packet); |
72b06300 BP |
3769 | break; |
3770 | ||
3771 | case _ODPL_SFLOW_NR: | |
3772 | if (p->sflow) { | |
3773 | ofproto_sflow_received(p->sflow, msg); | |
3774 | } | |
3775 | ofpbuf_delete(packet); | |
3776 | break; | |
3777 | ||
3778 | case _ODPL_MISS_NR: | |
3779 | handle_odp_miss_msg(p, packet); | |
3780 | break; | |
3781 | ||
3782 | default: | |
3783 | VLOG_WARN_RL(&rl, "received ODP message of unexpected type %"PRIu32, | |
3784 | msg->type); | |
3785 | break; | |
3786 | } | |
3787 | } | |
064af421 BP |
3788 | \f |
3789 | static void | |
3790 | revalidate_cb(struct cls_rule *sub_, void *cbdata_) | |
3791 | { | |
3792 | struct rule *sub = rule_from_cls_rule(sub_); | |
3793 | struct revalidate_cbdata *cbdata = cbdata_; | |
3794 | ||
3795 | if (cbdata->revalidate_all | |
3796 | || (cbdata->revalidate_subrules && sub->super) | |
3797 | || (tag_set_intersects(&cbdata->revalidate_set, sub->tags))) { | |
3798 | revalidate_rule(cbdata->ofproto, sub); | |
3799 | } | |
3800 | } | |
3801 | ||
3802 | static bool | |
3803 | revalidate_rule(struct ofproto *p, struct rule *rule) | |
3804 | { | |
3805 | const flow_t *flow = &rule->cr.flow; | |
3806 | ||
3807 | COVERAGE_INC(ofproto_revalidate_rule); | |
3808 | if (rule->super) { | |
3809 | struct rule *super; | |
3810 | super = rule_from_cls_rule(classifier_lookup_wild(&p->cls, flow)); | |
3811 | if (!super) { | |
3812 | rule_remove(p, rule); | |
3813 | return false; | |
3814 | } else if (super != rule->super) { | |
3815 | COVERAGE_INC(ofproto_revalidate_moved); | |
3816 | list_remove(&rule->list); | |
3817 | list_push_back(&super->list, &rule->list); | |
3818 | rule->super = super; | |
3819 | rule->hard_timeout = super->hard_timeout; | |
3820 | rule->idle_timeout = super->idle_timeout; | |
3821 | rule->created = super->created; | |
3822 | rule->used = 0; | |
3823 | } | |
3824 | } | |
3825 | ||
3826 | rule_update_actions(p, rule); | |
3827 | return true; | |
3828 | } | |
3829 | ||
3830 | static struct ofpbuf * | |
659586ef JG |
3831 | compose_flow_removed(struct ofproto *p, const struct rule *rule, |
3832 | long long int now, uint8_t reason) | |
064af421 | 3833 | { |
ca069229 | 3834 | struct ofp_flow_removed *ofr; |
064af421 | 3835 | struct ofpbuf *buf; |
9ca76894 | 3836 | long long int tdiff = now - rule->created; |
26c3f94a JP |
3837 | uint32_t sec = tdiff / 1000; |
3838 | uint32_t msec = tdiff - (sec * 1000); | |
064af421 | 3839 | |
ca069229 | 3840 | ofr = make_openflow(sizeof *ofr, OFPT_FLOW_REMOVED, &buf); |
659586ef JG |
3841 | flow_to_match(&rule->cr.flow, rule->cr.wc.wildcards, p->tun_id_from_cookie, |
3842 | &ofr->match); | |
39997502 | 3843 | ofr->cookie = rule->flow_cookie; |
ca069229 JP |
3844 | ofr->priority = htons(rule->cr.priority); |
3845 | ofr->reason = reason; | |
26c3f94a JP |
3846 | ofr->duration_sec = htonl(sec); |
3847 | ofr->duration_nsec = htonl(msec * 1000000); | |
ca069229 JP |
3848 | ofr->idle_timeout = htons(rule->idle_timeout); |
3849 | ofr->packet_count = htonll(rule->packet_count); | |
3850 | ofr->byte_count = htonll(rule->byte_count); | |
064af421 BP |
3851 | |
3852 | return buf; | |
3853 | } | |
3854 | ||
3855 | static void | |
ca069229 JP |
3856 | uninstall_idle_flow(struct ofproto *ofproto, struct rule *rule) |
3857 | { | |
3858 | assert(rule->installed); | |
3859 | assert(!rule->cr.wc.wildcards); | |
3860 | ||
3861 | if (rule->super) { | |
3862 | rule_remove(ofproto, rule); | |
3863 | } else { | |
3864 | rule_uninstall(ofproto, rule); | |
3865 | } | |
3866 | } | |
9deba63b | 3867 | |
ca069229 JP |
3868 | static void |
3869 | send_flow_removed(struct ofproto *p, struct rule *rule, | |
3870 | long long int now, uint8_t reason) | |
064af421 BP |
3871 | { |
3872 | struct ofconn *ofconn; | |
3873 | struct ofconn *prev; | |
b9b0ce61 | 3874 | struct ofpbuf *buf = NULL; |
064af421 BP |
3875 | |
3876 | /* We limit the maximum number of queued flow expirations it by accounting | |
3877 | * them under the counter for replies. That works because preventing | |
3878 | * OpenFlow requests from being processed also prevents new flows from | |
3879 | * being added (and expiring). (It also prevents processing OpenFlow | |
3880 | * requests that would not add new flows, so it is imperfect.) */ | |
3881 | ||
3882 | prev = NULL; | |
3883 | LIST_FOR_EACH (ofconn, struct ofconn, node, &p->all_conns) { | |
9deba63b | 3884 | if (rule->send_flow_removed && rconn_is_connected(ofconn->rconn) |
c91248b3 | 3885 | && ofconn_receives_async_msgs(ofconn)) { |
064af421 | 3886 | if (prev) { |
431d8ad2 | 3887 | queue_tx(ofpbuf_clone(buf), prev, prev->reply_counter); |
064af421 | 3888 | } else { |
659586ef | 3889 | buf = compose_flow_removed(p, rule, now, reason); |
064af421 BP |
3890 | } |
3891 | prev = ofconn; | |
3892 | } | |
3893 | } | |
3894 | if (prev) { | |
431d8ad2 | 3895 | queue_tx(buf, prev, prev->reply_counter); |
064af421 BP |
3896 | } |
3897 | } | |
3898 | ||
064af421 BP |
3899 | |
3900 | static void | |
3901 | expire_rule(struct cls_rule *cls_rule, void *p_) | |
3902 | { | |
3903 | struct ofproto *p = p_; | |
3904 | struct rule *rule = rule_from_cls_rule(cls_rule); | |
3905 | long long int hard_expire, idle_expire, expire, now; | |
3906 | ||
3907 | hard_expire = (rule->hard_timeout | |
3908 | ? rule->created + rule->hard_timeout * 1000 | |
3909 | : LLONG_MAX); | |
3910 | idle_expire = (rule->idle_timeout | |
3911 | && (rule->super || list_is_empty(&rule->list)) | |
3912 | ? rule->used + rule->idle_timeout * 1000 | |
3913 | : LLONG_MAX); | |
3914 | expire = MIN(hard_expire, idle_expire); | |
064af421 BP |
3915 | |
3916 | now = time_msec(); | |
3917 | if (now < expire) { | |
3918 | if (rule->installed && now >= rule->used + 5000) { | |
3919 | uninstall_idle_flow(p, rule); | |
0193b2af JG |
3920 | } else if (!rule->cr.wc.wildcards) { |
3921 | active_timeout(p, rule); | |
064af421 | 3922 | } |
0193b2af | 3923 | |
064af421 BP |
3924 | return; |
3925 | } | |
3926 | ||
3927 | COVERAGE_INC(ofproto_expired); | |
46d6f36f JG |
3928 | |
3929 | /* Update stats. This code will be a no-op if the rule expired | |
3930 | * due to an idle timeout. */ | |
064af421 | 3931 | if (rule->cr.wc.wildcards) { |
064af421 BP |
3932 | struct rule *subrule, *next; |
3933 | LIST_FOR_EACH_SAFE (subrule, next, struct rule, list, &rule->list) { | |
3934 | rule_remove(p, subrule); | |
3935 | } | |
46d6f36f JG |
3936 | } else { |
3937 | rule_uninstall(p, rule); | |
064af421 BP |
3938 | } |
3939 | ||
8fe1a59d | 3940 | if (!rule_is_hidden(rule)) { |
ca069229 JP |
3941 | send_flow_removed(p, rule, now, |
3942 | (now >= hard_expire | |
3943 | ? OFPRR_HARD_TIMEOUT : OFPRR_IDLE_TIMEOUT)); | |
8fe1a59d | 3944 | } |
064af421 BP |
3945 | rule_remove(p, rule); |
3946 | } | |
3947 | ||
0193b2af JG |
3948 | static void |
3949 | active_timeout(struct ofproto *ofproto, struct rule *rule) | |
3950 | { | |
3951 | if (ofproto->netflow && !is_controller_rule(rule) && | |
3952 | netflow_active_timeout_expired(ofproto->netflow, &rule->nf_flow)) { | |
3953 | struct ofexpired expired; | |
3954 | struct odp_flow odp_flow; | |
3955 | ||
3956 | /* Get updated flow stats. */ | |
3957 | memset(&odp_flow, 0, sizeof odp_flow); | |
094e1514 JG |
3958 | if (rule->installed) { |
3959 | odp_flow.key = rule->cr.flow; | |
3960 | odp_flow.flags = ODPFF_ZERO_TCP_FLAGS; | |
d65349ea | 3961 | dpif_flow_get(ofproto->dpif, &odp_flow); |
094e1514 JG |
3962 | |
3963 | if (odp_flow.stats.n_packets) { | |
3964 | update_time(ofproto, rule, &odp_flow.stats); | |
3965 | netflow_flow_update_flags(&rule->nf_flow, odp_flow.stats.ip_tos, | |
3966 | odp_flow.stats.tcp_flags); | |
3967 | } | |
0193b2af JG |
3968 | } |
3969 | ||
3970 | expired.flow = rule->cr.flow; | |
3971 | expired.packet_count = rule->packet_count + | |
3972 | odp_flow.stats.n_packets; | |
3973 | expired.byte_count = rule->byte_count + odp_flow.stats.n_bytes; | |
3974 | expired.used = rule->used; | |
3975 | ||
3976 | netflow_expire(ofproto->netflow, &rule->nf_flow, &expired); | |
3977 | ||
3978 | /* Schedule us to send the accumulated records once we have | |
3979 | * collected all of them. */ | |
3980 | poll_immediate_wake(); | |
3981 | } | |
3982 | } | |
3983 | ||
064af421 BP |
3984 | static void |
3985 | update_used(struct ofproto *p) | |
3986 | { | |
3987 | struct odp_flow *flows; | |
3988 | size_t n_flows; | |
3989 | size_t i; | |
3990 | int error; | |
3991 | ||
c228a364 | 3992 | error = dpif_flow_list_all(p->dpif, &flows, &n_flows); |
064af421 BP |
3993 | if (error) { |
3994 | return; | |
3995 | } | |
3996 | ||
3997 | for (i = 0; i < n_flows; i++) { | |
3998 | struct odp_flow *f = &flows[i]; | |
3999 | struct rule *rule; | |
4000 | ||
4001 | rule = rule_from_cls_rule( | |
4002 | classifier_find_rule_exactly(&p->cls, &f->key, 0, UINT16_MAX)); | |
4003 | if (!rule || !rule->installed) { | |
4004 | COVERAGE_INC(ofproto_unexpected_rule); | |
c228a364 | 4005 | dpif_flow_del(p->dpif, f); |
064af421 BP |
4006 | continue; |
4007 | } | |
4008 | ||
0193b2af | 4009 | update_time(p, rule, &f->stats); |
064af421 BP |
4010 | rule_account(p, rule, f->stats.n_bytes); |
4011 | } | |
4012 | free(flows); | |
4013 | } | |
4014 | ||
43253595 | 4015 | /* pinsched callback for sending 'packet' on 'ofconn'. */ |
064af421 | 4016 | static void |
76ce9432 | 4017 | do_send_packet_in(struct ofpbuf *packet, void *ofconn_) |
064af421 | 4018 | { |
76ce9432 | 4019 | struct ofconn *ofconn = ofconn_; |
43253595 BP |
4020 | |
4021 | rconn_send_with_limit(ofconn->rconn, packet, | |
4022 | ofconn->packet_in_counter, 100); | |
4023 | } | |
4024 | ||
4025 | /* Takes 'packet', which has been converted with do_convert_to_packet_in(), and | |
4026 | * finalizes its content for sending on 'ofconn', and passes it to 'ofconn''s | |
4027 | * packet scheduler for sending. | |
4028 | * | |
30ea5d93 BP |
4029 | * 'max_len' specifies the maximum number of bytes of the packet to send on |
4030 | * 'ofconn' (INT_MAX specifies no limit). | |
4031 | * | |
43253595 BP |
4032 | * If 'clone' is true, the caller retains ownership of 'packet'. Otherwise, |
4033 | * ownership is transferred to this function. */ | |
4034 | static void | |
30ea5d93 BP |
4035 | schedule_packet_in(struct ofconn *ofconn, struct ofpbuf *packet, int max_len, |
4036 | bool clone) | |
43253595 | 4037 | { |
76ce9432 | 4038 | struct ofproto *ofproto = ofconn->ofproto; |
43253595 BP |
4039 | struct ofp_packet_in *opi = packet->data; |
4040 | uint16_t in_port = ofp_port_to_odp_port(ntohs(opi->in_port)); | |
4041 | int send_len, trim_size; | |
76ce9432 | 4042 | uint32_t buffer_id; |
064af421 | 4043 | |
43253595 BP |
4044 | /* Get buffer. */ |
4045 | if (opi->reason == OFPR_ACTION) { | |
76ce9432 | 4046 | buffer_id = UINT32_MAX; |
43253595 BP |
4047 | } else if (ofproto->fail_open && fail_open_is_active(ofproto->fail_open)) { |
4048 | buffer_id = pktbuf_get_null(); | |
89b9612d BP |
4049 | } else if (!ofconn->pktbuf) { |
4050 | buffer_id = UINT32_MAX; | |
76ce9432 | 4051 | } else { |
43253595 BP |
4052 | struct ofpbuf payload; |
4053 | payload.data = opi->data; | |
4054 | payload.size = packet->size - offsetof(struct ofp_packet_in, data); | |
4055 | buffer_id = pktbuf_save(ofconn->pktbuf, &payload, in_port); | |
76ce9432 | 4056 | } |
372179d4 | 4057 | |
43253595 BP |
4058 | /* Figure out how much of the packet to send. */ |
4059 | send_len = ntohs(opi->total_len); | |
4060 | if (buffer_id != UINT32_MAX) { | |
4061 | send_len = MIN(send_len, ofconn->miss_send_len); | |
4062 | } | |
30ea5d93 | 4063 | send_len = MIN(send_len, max_len); |
064af421 | 4064 | |
43253595 BP |
4065 | /* Adjust packet length and clone if necessary. */ |
4066 | trim_size = offsetof(struct ofp_packet_in, data) + send_len; | |
4067 | if (clone) { | |
4068 | packet = ofpbuf_clone_data(packet->data, trim_size); | |
4069 | opi = packet->data; | |
4070 | } else { | |
4071 | packet->size = trim_size; | |
4072 | } | |
4073 | ||
4074 | /* Update packet headers. */ | |
4075 | opi->buffer_id = htonl(buffer_id); | |
4076 | update_openflow_length(packet); | |
4077 | ||
4078 | /* Hand over to packet scheduler. It might immediately call into | |
4079 | * do_send_packet_in() or it might buffer it for a while (until a later | |
4080 | * call to pinsched_run()). */ | |
4081 | pinsched_send(ofconn->schedulers[opi->reason], in_port, | |
4082 | packet, do_send_packet_in, ofconn); | |
064af421 BP |
4083 | } |
4084 | ||
43253595 BP |
4085 | /* Replace struct odp_msg header in 'packet' by equivalent struct |
4086 | * ofp_packet_in. The odp_msg must have sufficient headroom to do so (e.g. as | |
4087 | * returned by dpif_recv()). | |
4088 | * | |
4089 | * The conversion is not complete: the caller still needs to trim any unneeded | |
4090 | * payload off the end of the buffer, set the length in the OpenFlow header, | |
4091 | * and set buffer_id. Those require us to know the controller settings and so | |
30ea5d93 BP |
4092 | * must be done on a per-controller basis. |
4093 | * | |
4094 | * Returns the maximum number of bytes of the packet that should be sent to | |
4095 | * the controller (INT_MAX if no limit). */ | |
4096 | static int | |
43253595 | 4097 | do_convert_to_packet_in(struct ofpbuf *packet) |
064af421 | 4098 | { |
76ce9432 | 4099 | struct odp_msg *msg = packet->data; |
43253595 BP |
4100 | struct ofp_packet_in *opi; |
4101 | uint8_t reason; | |
4102 | uint16_t total_len; | |
4103 | uint16_t in_port; | |
30ea5d93 | 4104 | int max_len; |
43253595 BP |
4105 | |
4106 | /* Extract relevant header fields */ | |
30ea5d93 BP |
4107 | if (msg->type == _ODPL_ACTION_NR) { |
4108 | reason = OFPR_ACTION; | |
4109 | max_len = msg->arg; | |
4110 | } else { | |
4111 | reason = OFPR_NO_MATCH; | |
4112 | max_len = INT_MAX; | |
4113 | } | |
43253595 BP |
4114 | total_len = msg->length - sizeof *msg; |
4115 | in_port = odp_port_to_ofp_port(msg->port); | |
4116 | ||
4117 | /* Repurpose packet buffer by overwriting header. */ | |
4118 | ofpbuf_pull(packet, sizeof(struct odp_msg)); | |
4119 | opi = ofpbuf_push_zeros(packet, offsetof(struct ofp_packet_in, data)); | |
4120 | opi->header.version = OFP_VERSION; | |
4121 | opi->header.type = OFPT_PACKET_IN; | |
4122 | opi->total_len = htons(total_len); | |
4123 | opi->in_port = htons(in_port); | |
4124 | opi->reason = reason; | |
30ea5d93 BP |
4125 | |
4126 | return max_len; | |
43253595 BP |
4127 | } |
4128 | ||
4129 | /* Given 'packet' containing an odp_msg of type _ODPL_ACTION_NR or | |
4130 | * _ODPL_MISS_NR, sends an OFPT_PACKET_IN message to each OpenFlow controller | |
4131 | * as necessary according to their individual configurations. | |
4132 | * | |
4133 | * 'packet' must have sufficient headroom to convert it into a struct | |
4134 | * ofp_packet_in (e.g. as returned by dpif_recv()). | |
4135 | * | |
4136 | * Takes ownership of 'packet'. */ | |
4137 | static void | |
4138 | send_packet_in(struct ofproto *ofproto, struct ofpbuf *packet) | |
4139 | { | |
76ce9432 | 4140 | struct ofconn *ofconn, *prev; |
30ea5d93 | 4141 | int max_len; |
064af421 | 4142 | |
30ea5d93 | 4143 | max_len = do_convert_to_packet_in(packet); |
76ce9432 BP |
4144 | |
4145 | prev = NULL; | |
4146 | LIST_FOR_EACH (ofconn, struct ofconn, node, &ofproto->all_conns) { | |
c91248b3 | 4147 | if (ofconn_receives_async_msgs(ofconn)) { |
9deba63b | 4148 | if (prev) { |
30ea5d93 | 4149 | schedule_packet_in(prev, packet, max_len, true); |
9deba63b BP |
4150 | } |
4151 | prev = ofconn; | |
064af421 | 4152 | } |
76ce9432 BP |
4153 | } |
4154 | if (prev) { | |
30ea5d93 | 4155 | schedule_packet_in(prev, packet, max_len, false); |
76ce9432 BP |
4156 | } else { |
4157 | ofpbuf_delete(packet); | |
064af421 | 4158 | } |
064af421 BP |
4159 | } |
4160 | ||
4161 | static uint64_t | |
fa60c019 | 4162 | pick_datapath_id(const struct ofproto *ofproto) |
064af421 | 4163 | { |
fa60c019 | 4164 | const struct ofport *port; |
064af421 | 4165 | |
fa60c019 BP |
4166 | port = port_array_get(&ofproto->ports, ODPP_LOCAL); |
4167 | if (port) { | |
4168 | uint8_t ea[ETH_ADDR_LEN]; | |
4169 | int error; | |
4170 | ||
4171 | error = netdev_get_etheraddr(port->netdev, ea); | |
064af421 BP |
4172 | if (!error) { |
4173 | return eth_addr_to_uint64(ea); | |
4174 | } | |
4175 | VLOG_WARN("could not get MAC address for %s (%s)", | |
fa60c019 | 4176 | netdev_get_name(port->netdev), strerror(error)); |
064af421 | 4177 | } |
fa60c019 | 4178 | return ofproto->fallback_dpid; |
064af421 BP |
4179 | } |
4180 | ||
4181 | static uint64_t | |
4182 | pick_fallback_dpid(void) | |
4183 | { | |
4184 | uint8_t ea[ETH_ADDR_LEN]; | |
70150daf | 4185 | eth_addr_nicira_random(ea); |
064af421 BP |
4186 | return eth_addr_to_uint64(ea); |
4187 | } | |
4188 | \f | |
4189 | static bool | |
4190 | default_normal_ofhook_cb(const flow_t *flow, const struct ofpbuf *packet, | |
4191 | struct odp_actions *actions, tag_type *tags, | |
6a07af36 | 4192 | uint16_t *nf_output_iface, void *ofproto_) |
064af421 BP |
4193 | { |
4194 | struct ofproto *ofproto = ofproto_; | |
4195 | int out_port; | |
4196 | ||
4197 | /* Drop frames for reserved multicast addresses. */ | |
4198 | if (eth_addr_is_reserved(flow->dl_dst)) { | |
4199 | return true; | |
4200 | } | |
4201 | ||
4202 | /* Learn source MAC (but don't try to learn from revalidation). */ | |
4203 | if (packet != NULL) { | |
4204 | tag_type rev_tag = mac_learning_learn(ofproto->ml, flow->dl_src, | |
4205 | 0, flow->in_port); | |
4206 | if (rev_tag) { | |
4207 | /* The log messages here could actually be useful in debugging, | |
4208 | * so keep the rate limit relatively high. */ | |
4209 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(30, 300); | |
4210 | VLOG_DBG_RL(&rl, "learned that "ETH_ADDR_FMT" is on port %"PRIu16, | |
4211 | ETH_ADDR_ARGS(flow->dl_src), flow->in_port); | |
4212 | ofproto_revalidate(ofproto, rev_tag); | |
4213 | } | |
4214 | } | |
4215 | ||
4216 | /* Determine output port. */ | |
4217 | out_port = mac_learning_lookup_tag(ofproto->ml, flow->dl_dst, 0, tags); | |
4218 | if (out_port < 0) { | |
6a07af36 | 4219 | add_output_group_action(actions, DP_GROUP_FLOOD, nf_output_iface); |
064af421 BP |
4220 | } else if (out_port != flow->in_port) { |
4221 | odp_actions_add(actions, ODPAT_OUTPUT)->output.port = out_port; | |
6a07af36 | 4222 | *nf_output_iface = out_port; |
064af421 BP |
4223 | } else { |
4224 | /* Drop. */ | |
4225 | } | |
4226 | ||
4227 | return true; | |
4228 | } | |
4229 | ||
4230 | static const struct ofhooks default_ofhooks = { | |
4231 | NULL, | |
4232 | default_normal_ofhook_cb, | |
4233 | NULL, | |
4234 | NULL | |
4235 | }; |