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064af421 | 1 | /* |
db5ce514 | 2 | * Copyright (c) 2009, 2010, 2011 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> | |
064af421 BP |
22 | #include <stdbool.h> |
23 | #include <stdlib.h> | |
10a24935 | 24 | #include "byte-order.h" |
064af421 | 25 | #include "classifier.h" |
19a87e36 | 26 | #include "connmgr.h" |
064af421 | 27 | #include "coverage.h" |
4f2cad2c | 28 | #include "dynamic-string.h" |
ca0f572c BP |
29 | #include "hash.h" |
30 | #include "hmap.h" | |
064af421 | 31 | #include "netdev.h" |
09246b99 | 32 | #include "nx-match.h" |
064af421 | 33 | #include "ofp-print.h" |
fa37b408 | 34 | #include "ofp-util.h" |
064af421 | 35 | #include "ofpbuf.h" |
5bee6e26 | 36 | #include "ofproto-provider.h" |
064af421 BP |
37 | #include "openflow/nicira-ext.h" |
38 | #include "openflow/openflow.h" | |
064af421 BP |
39 | #include "packets.h" |
40 | #include "pinsched.h" | |
41 | #include "pktbuf.h" | |
42 | #include "poll-loop.h" | |
064af421 | 43 | #include "shash.h" |
b3c01ed3 | 44 | #include "sset.h" |
064af421 | 45 | #include "timeval.h" |
c4617b3c | 46 | #include "unaligned.h" |
4f2cad2c | 47 | #include "unixctl.h" |
5136ce49 | 48 | #include "vlog.h" |
064af421 | 49 | |
d98e6007 | 50 | VLOG_DEFINE_THIS_MODULE(ofproto); |
064af421 | 51 | |
d76f09ea | 52 | COVERAGE_DEFINE(ofproto_error); |
d76f09ea | 53 | COVERAGE_DEFINE(ofproto_flush); |
d76f09ea | 54 | COVERAGE_DEFINE(ofproto_no_packet_in); |
d76f09ea BP |
55 | COVERAGE_DEFINE(ofproto_packet_out); |
56 | COVERAGE_DEFINE(ofproto_queue_req); | |
57 | COVERAGE_DEFINE(ofproto_recv_openflow); | |
58 | COVERAGE_DEFINE(ofproto_reinit_ports); | |
d76f09ea BP |
59 | COVERAGE_DEFINE(ofproto_uninstallable); |
60 | COVERAGE_DEFINE(ofproto_update_port); | |
61 | ||
7ee20df1 BP |
62 | enum ofproto_state { |
63 | S_OPENFLOW, /* Processing OpenFlow commands. */ | |
64 | S_FLUSH, /* Deleting all flow table rules. */ | |
65 | }; | |
66 | ||
67 | enum ofoperation_type { | |
68 | OFOPERATION_ADD, | |
69 | OFOPERATION_DELETE, | |
70 | OFOPERATION_MODIFY | |
71 | }; | |
72 | ||
73 | /* A single OpenFlow request can execute any number of operations. The | |
74 | * ofopgroup maintain OpenFlow state common to all of the operations, e.g. the | |
75 | * ofconn to which an error reply should be sent if necessary. | |
76 | * | |
77 | * ofproto initiates some operations internally. These operations are still | |
78 | * assigned to groups but will not have an associated ofconn. */ | |
79 | struct ofopgroup { | |
80 | struct ofproto *ofproto; /* Owning ofproto. */ | |
81 | struct list ofproto_node; /* In ofproto's "pending" list. */ | |
82 | struct list ops; /* List of "struct ofoperation"s. */ | |
83 | ||
84 | /* Data needed to send OpenFlow reply on failure or to send a buffered | |
85 | * packet on success. | |
86 | * | |
87 | * If list_is_empty(ofconn_node) then this ofopgroup never had an | |
88 | * associated ofconn or its ofconn's connection dropped after it initiated | |
89 | * the operation. In the latter case 'ofconn' is a wild pointer that | |
90 | * refers to freed memory, so the 'ofconn' member must be used only if | |
91 | * !list_is_empty(ofconn_node). | |
92 | */ | |
93 | struct list ofconn_node; /* In ofconn's list of pending opgroups. */ | |
94 | struct ofconn *ofconn; /* ofconn for reply (but see note above). */ | |
95 | struct ofp_header *request; /* Original request (truncated at 64 bytes). */ | |
96 | uint32_t buffer_id; /* Buffer id from original request. */ | |
97 | int error; /* 0 if no error yet, otherwise error code. */ | |
98 | }; | |
99 | ||
7024dffe BP |
100 | static struct ofopgroup *ofopgroup_create_unattached(struct ofproto *); |
101 | static struct ofopgroup *ofopgroup_create(struct ofproto *, struct ofconn *, | |
102 | const struct ofp_header *, | |
103 | uint32_t buffer_id); | |
7ee20df1 BP |
104 | static void ofopgroup_submit(struct ofopgroup *); |
105 | static void ofopgroup_destroy(struct ofopgroup *); | |
106 | ||
107 | /* A single flow table operation. */ | |
108 | struct ofoperation { | |
109 | struct ofopgroup *group; /* Owning group. */ | |
110 | struct list group_node; /* In ofopgroup's "ops" list. */ | |
111 | struct hmap_node hmap_node; /* In ofproto's "deletions" hmap. */ | |
112 | struct rule *rule; /* Rule being operated upon. */ | |
113 | enum ofoperation_type type; /* Type of operation. */ | |
114 | int status; /* -1 if pending, otherwise 0 or error code. */ | |
115 | struct rule *victim; /* OFOPERATION_ADDING: Replaced rule. */ | |
116 | union ofp_action *actions; /* OFOPERATION_MODIFYING: Replaced actions. */ | |
117 | int n_actions; /* OFOPERATION_MODIFYING: # of old actions. */ | |
118 | ovs_be64 flow_cookie; /* Rule's old flow cookie. */ | |
119 | }; | |
120 | ||
121 | static void ofoperation_create(struct ofopgroup *, struct rule *, | |
122 | enum ofoperation_type); | |
123 | static void ofoperation_destroy(struct ofoperation *); | |
124 | ||
abe529af BP |
125 | static void ofport_destroy__(struct ofport *); |
126 | static void ofport_destroy(struct ofport *); | |
878ae780 | 127 | |
abe529af BP |
128 | static uint64_t pick_datapath_id(const struct ofproto *); |
129 | static uint64_t pick_fallback_dpid(void); | |
064af421 | 130 | |
abe529af | 131 | static void ofproto_destroy__(struct ofproto *); |
064af421 | 132 | |
abe529af BP |
133 | static void ofproto_rule_destroy__(struct rule *); |
134 | static void ofproto_rule_send_removed(struct rule *, uint8_t reason); | |
f29152ca | 135 | |
7ee20df1 BP |
136 | static void ofopgroup_destroy(struct ofopgroup *); |
137 | ||
a9a2da38 | 138 | static int add_flow(struct ofproto *, struct ofconn *, |
1b9d6420 BP |
139 | const struct ofputil_flow_mod *, |
140 | const struct ofp_header *); | |
7ee20df1 | 141 | |
7ee20df1 | 142 | static bool handle_openflow(struct ofconn *, struct ofpbuf *); |
75a75043 BP |
143 | static int handle_flow_mod__(struct ofproto *, struct ofconn *, |
144 | const struct ofputil_flow_mod *, | |
145 | const struct ofp_header *); | |
f29152ca | 146 | |
abe529af BP |
147 | static void update_port(struct ofproto *, const char *devname); |
148 | static int init_ports(struct ofproto *); | |
149 | static void reinit_ports(struct ofproto *); | |
9197df76 | 150 | static void set_internal_devs_mtu(struct ofproto *); |
f29152ca | 151 | |
abe529af | 152 | static void ofproto_unixctl_init(void); |
f29152ca | 153 | |
abe529af BP |
154 | /* All registered ofproto classes, in probe order. */ |
155 | static const struct ofproto_class **ofproto_classes; | |
156 | static size_t n_ofproto_classes; | |
157 | static size_t allocated_ofproto_classes; | |
7aa697dd | 158 | |
f797957a | 159 | /* Map from datapath name to struct ofproto, for use by unixctl commands. */ |
abe529af | 160 | static struct hmap all_ofprotos = HMAP_INITIALIZER(&all_ofprotos); |
ebe482fd | 161 | |
abe529af | 162 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); |
f29152ca | 163 | |
abe529af BP |
164 | static void |
165 | ofproto_initialize(void) | |
166 | { | |
167 | static bool inited; | |
f29152ca | 168 | |
abe529af BP |
169 | if (!inited) { |
170 | inited = true; | |
171 | ofproto_class_register(&ofproto_dpif_class); | |
172 | } | |
173 | } | |
f29152ca | 174 | |
abe529af BP |
175 | /* 'type' should be a normalized datapath type, as returned by |
176 | * ofproto_normalize_type(). Returns the corresponding ofproto_class | |
177 | * structure, or a null pointer if there is none registered for 'type'. */ | |
178 | static const struct ofproto_class * | |
179 | ofproto_class_find__(const char *type) | |
180 | { | |
181 | size_t i; | |
f29152ca | 182 | |
abe529af BP |
183 | ofproto_initialize(); |
184 | for (i = 0; i < n_ofproto_classes; i++) { | |
185 | const struct ofproto_class *class = ofproto_classes[i]; | |
186 | struct sset types; | |
187 | bool found; | |
064af421 | 188 | |
abe529af BP |
189 | sset_init(&types); |
190 | class->enumerate_types(&types); | |
191 | found = sset_contains(&types, type); | |
192 | sset_destroy(&types); | |
bcf84111 | 193 | |
abe529af BP |
194 | if (found) { |
195 | return class; | |
196 | } | |
197 | } | |
198 | VLOG_WARN("unknown datapath type %s", type); | |
199 | return NULL; | |
200 | } | |
064af421 | 201 | |
abe529af BP |
202 | /* Registers a new ofproto class. After successful registration, new ofprotos |
203 | * of that type can be created using ofproto_create(). */ | |
204 | int | |
205 | ofproto_class_register(const struct ofproto_class *new_class) | |
206 | { | |
207 | size_t i; | |
7aa697dd | 208 | |
abe529af BP |
209 | for (i = 0; i < n_ofproto_classes; i++) { |
210 | if (ofproto_classes[i] == new_class) { | |
211 | return EEXIST; | |
212 | } | |
213 | } | |
064af421 | 214 | |
abe529af BP |
215 | if (n_ofproto_classes >= allocated_ofproto_classes) { |
216 | ofproto_classes = x2nrealloc(ofproto_classes, | |
217 | &allocated_ofproto_classes, | |
218 | sizeof *ofproto_classes); | |
219 | } | |
220 | ofproto_classes[n_ofproto_classes++] = new_class; | |
221 | return 0; | |
222 | } | |
064af421 | 223 | |
abe529af BP |
224 | /* Unregisters a datapath provider. 'type' must have been previously |
225 | * registered and not currently be in use by any ofprotos. After | |
226 | * unregistration new datapaths of that type cannot be opened using | |
227 | * ofproto_create(). */ | |
228 | int | |
229 | ofproto_class_unregister(const struct ofproto_class *class) | |
230 | { | |
231 | size_t i; | |
76ce9432 | 232 | |
abe529af BP |
233 | for (i = 0; i < n_ofproto_classes; i++) { |
234 | if (ofproto_classes[i] == class) { | |
235 | for (i++; i < n_ofproto_classes; i++) { | |
236 | ofproto_classes[i - 1] = ofproto_classes[i]; | |
237 | } | |
238 | n_ofproto_classes--; | |
239 | return 0; | |
240 | } | |
241 | } | |
242 | VLOG_WARN("attempted to unregister an ofproto class that is not " | |
243 | "registered"); | |
244 | return EAFNOSUPPORT; | |
245 | } | |
4a4cdb3b | 246 | |
f79e673f BP |
247 | /* Clears 'types' and enumerates all registered ofproto types into it. The |
248 | * caller must first initialize the sset. */ | |
249 | void | |
250 | ofproto_enumerate_types(struct sset *types) | |
251 | { | |
abe529af | 252 | size_t i; |
064af421 | 253 | |
abe529af BP |
254 | ofproto_initialize(); |
255 | for (i = 0; i < n_ofproto_classes; i++) { | |
256 | ofproto_classes[i]->enumerate_types(types); | |
257 | } | |
f79e673f | 258 | } |
064af421 | 259 | |
f79e673f BP |
260 | /* Returns the fully spelled out name for the given ofproto 'type'. |
261 | * | |
262 | * Normalized type string can be compared with strcmp(). Unnormalized type | |
263 | * string might be the same even if they have different spellings. */ | |
264 | const char * | |
265 | ofproto_normalize_type(const char *type) | |
266 | { | |
abe529af | 267 | return type && type[0] ? type : "system"; |
f79e673f | 268 | } |
064af421 | 269 | |
f79e673f BP |
270 | /* Clears 'names' and enumerates the names of all known created ofprotos with |
271 | * the given 'type'. The caller must first initialize the sset. Returns 0 if | |
272 | * successful, otherwise a positive errno value. | |
273 | * | |
274 | * Some kinds of datapaths might not be practically enumerable. This is not | |
275 | * considered an error. */ | |
276 | int | |
277 | ofproto_enumerate_names(const char *type, struct sset *names) | |
278 | { | |
abe529af BP |
279 | const struct ofproto_class *class = ofproto_class_find__(type); |
280 | return class ? class->enumerate_names(type, names) : EAFNOSUPPORT; | |
281 | } | |
7aa697dd | 282 | |
064af421 | 283 | int |
abe529af | 284 | ofproto_create(const char *datapath_name, const char *datapath_type, |
064af421 BP |
285 | struct ofproto **ofprotop) |
286 | { | |
abe529af | 287 | const struct ofproto_class *class; |
b772ded8 | 288 | struct classifier *table; |
abe529af | 289 | struct ofproto *ofproto; |
073e2a6f | 290 | int n_tables; |
064af421 BP |
291 | int error; |
292 | ||
293 | *ofprotop = NULL; | |
294 | ||
abe529af | 295 | ofproto_initialize(); |
7aa697dd BP |
296 | ofproto_unixctl_init(); |
297 | ||
abe529af BP |
298 | datapath_type = ofproto_normalize_type(datapath_type); |
299 | class = ofproto_class_find__(datapath_type); | |
300 | if (!class) { | |
301 | VLOG_WARN("could not create datapath %s of unknown type %s", | |
302 | datapath_name, datapath_type); | |
303 | return EAFNOSUPPORT; | |
064af421 BP |
304 | } |
305 | ||
abe529af BP |
306 | ofproto = class->alloc(); |
307 | if (!ofproto) { | |
308 | VLOG_ERR("failed to allocate datapath %s of type %s", | |
309 | datapath_name, datapath_type); | |
310 | return ENOMEM; | |
311 | } | |
312 | ||
313 | /* Initialize. */ | |
314 | memset(ofproto, 0, sizeof *ofproto); | |
315 | ofproto->ofproto_class = class; | |
316 | ofproto->name = xstrdup(datapath_name); | |
317 | ofproto->type = xstrdup(datapath_type); | |
318 | hmap_insert(&all_ofprotos, &ofproto->hmap_node, | |
319 | hash_string(ofproto->name, 0)); | |
320 | ofproto->datapath_id = 0; | |
084f5290 SH |
321 | ofproto_set_flow_eviction_threshold(ofproto, |
322 | OFPROTO_FLOW_EVICTON_THRESHOLD_DEFAULT); | |
8402c74b | 323 | ofproto->forward_bpdu = false; |
abe529af BP |
324 | ofproto->fallback_dpid = pick_fallback_dpid(); |
325 | ofproto->mfr_desc = xstrdup(DEFAULT_MFR_DESC); | |
326 | ofproto->hw_desc = xstrdup(DEFAULT_HW_DESC); | |
327 | ofproto->sw_desc = xstrdup(DEFAULT_SW_DESC); | |
328 | ofproto->serial_desc = xstrdup(DEFAULT_SERIAL_DESC); | |
329 | ofproto->dp_desc = xstrdup(DEFAULT_DP_DESC); | |
7257b535 | 330 | ofproto->frag_handling = OFPC_FRAG_NORMAL; |
abe529af BP |
331 | hmap_init(&ofproto->ports); |
332 | shash_init(&ofproto->port_by_name); | |
6c1491fb BP |
333 | ofproto->tables = NULL; |
334 | ofproto->n_tables = 0; | |
abe529af | 335 | ofproto->connmgr = connmgr_create(ofproto, datapath_name, datapath_name); |
7ee20df1 BP |
336 | ofproto->state = S_OPENFLOW; |
337 | list_init(&ofproto->pending); | |
dd5616b3 | 338 | ofproto->n_pending = 0; |
7ee20df1 | 339 | hmap_init(&ofproto->deletions); |
abe529af | 340 | |
073e2a6f | 341 | error = ofproto->ofproto_class->construct(ofproto, &n_tables); |
19a87e36 | 342 | if (error) { |
abe529af BP |
343 | VLOG_ERR("failed to open datapath %s: %s", |
344 | datapath_name, strerror(error)); | |
345 | ofproto_destroy__(ofproto); | |
19a87e36 BP |
346 | return error; |
347 | } | |
073e2a6f BP |
348 | |
349 | assert(n_tables >= 1 && n_tables <= 255); | |
350 | ofproto->n_tables = n_tables; | |
351 | ofproto->tables = xmalloc(n_tables * sizeof *ofproto->tables); | |
b772ded8 BP |
352 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { |
353 | classifier_init(table); | |
073e2a6f | 354 | } |
19a87e36 | 355 | |
abe529af BP |
356 | ofproto->datapath_id = pick_datapath_id(ofproto); |
357 | VLOG_INFO("using datapath ID %016"PRIx64, ofproto->datapath_id); | |
358 | init_ports(ofproto); | |
7aa697dd | 359 | |
abe529af | 360 | *ofprotop = ofproto; |
064af421 BP |
361 | return 0; |
362 | } | |
363 | ||
364 | void | |
365 | ofproto_set_datapath_id(struct ofproto *p, uint64_t datapath_id) | |
366 | { | |
367 | uint64_t old_dpid = p->datapath_id; | |
fa60c019 | 368 | p->datapath_id = datapath_id ? datapath_id : pick_datapath_id(p); |
064af421 | 369 | if (p->datapath_id != old_dpid) { |
b123cc3c | 370 | VLOG_INFO("datapath ID changed to %016"PRIx64, p->datapath_id); |
76ce9432 BP |
371 | |
372 | /* Force all active connections to reconnect, since there is no way to | |
373 | * notify a controller that the datapath ID has changed. */ | |
fa05809b | 374 | ofproto_reconnect_controllers(p); |
064af421 BP |
375 | } |
376 | } | |
377 | ||
76ce9432 BP |
378 | void |
379 | ofproto_set_controllers(struct ofproto *p, | |
380 | const struct ofproto_controller *controllers, | |
381 | size_t n_controllers) | |
382 | { | |
19a87e36 | 383 | connmgr_set_controllers(p->connmgr, controllers, n_controllers); |
064af421 BP |
384 | } |
385 | ||
31681a5d JP |
386 | void |
387 | ofproto_set_fail_mode(struct ofproto *p, enum ofproto_fail_mode fail_mode) | |
388 | { | |
19a87e36 | 389 | connmgr_set_fail_mode(p->connmgr, fail_mode); |
31681a5d JP |
390 | } |
391 | ||
fa05809b BP |
392 | /* Drops the connections between 'ofproto' and all of its controllers, forcing |
393 | * them to reconnect. */ | |
394 | void | |
395 | ofproto_reconnect_controllers(struct ofproto *ofproto) | |
396 | { | |
19a87e36 | 397 | connmgr_reconnect(ofproto->connmgr); |
917e50e1 BP |
398 | } |
399 | ||
400 | /* Sets the 'n' TCP port addresses in 'extras' as ones to which 'ofproto''s | |
401 | * in-band control should guarantee access, in the same way that in-band | |
402 | * control guarantees access to OpenFlow controllers. */ | |
403 | void | |
404 | ofproto_set_extra_in_band_remotes(struct ofproto *ofproto, | |
405 | const struct sockaddr_in *extras, size_t n) | |
406 | { | |
19a87e36 | 407 | connmgr_set_extra_in_band_remotes(ofproto->connmgr, extras, n); |
917e50e1 BP |
408 | } |
409 | ||
b1da6250 BP |
410 | /* Sets the OpenFlow queue used by flows set up by in-band control on |
411 | * 'ofproto' to 'queue_id'. If 'queue_id' is negative, then in-band control | |
412 | * flows will use the default queue. */ | |
413 | void | |
414 | ofproto_set_in_band_queue(struct ofproto *ofproto, int queue_id) | |
415 | { | |
19a87e36 | 416 | connmgr_set_in_band_queue(ofproto->connmgr, queue_id); |
b1da6250 BP |
417 | } |
418 | ||
084f5290 SH |
419 | /* Sets the number of flows at which eviction from the kernel flow table |
420 | * will occur. */ | |
421 | void | |
422 | ofproto_set_flow_eviction_threshold(struct ofproto *ofproto, unsigned threshold) | |
423 | { | |
424 | if (threshold < OFPROTO_FLOW_EVICTION_THRESHOLD_MIN) { | |
425 | ofproto->flow_eviction_threshold = OFPROTO_FLOW_EVICTION_THRESHOLD_MIN; | |
426 | } else { | |
427 | ofproto->flow_eviction_threshold = threshold; | |
428 | } | |
429 | } | |
430 | ||
b53055f4 | 431 | /* If forward_bpdu is true, the NORMAL action will forward frames with |
8402c74b SS |
432 | * reserved (e.g. STP) destination Ethernet addresses. if forward_bpdu is false, |
433 | * the NORMAL action will drop these frames. */ | |
434 | void | |
435 | ofproto_set_forward_bpdu(struct ofproto *ofproto, bool forward_bpdu) | |
436 | { | |
437 | bool old_val = ofproto->forward_bpdu; | |
438 | ofproto->forward_bpdu = forward_bpdu; | |
439 | if (old_val != ofproto->forward_bpdu) { | |
440 | if (ofproto->ofproto_class->forward_bpdu_changed) { | |
441 | ofproto->ofproto_class->forward_bpdu_changed(ofproto); | |
442 | } | |
b53055f4 | 443 | } |
8402c74b SS |
444 | } |
445 | ||
064af421 BP |
446 | void |
447 | ofproto_set_desc(struct ofproto *p, | |
5a719c38 JP |
448 | const char *mfr_desc, const char *hw_desc, |
449 | const char *sw_desc, const char *serial_desc, | |
8abc4ed7 | 450 | const char *dp_desc) |
064af421 | 451 | { |
5a719c38 JP |
452 | struct ofp_desc_stats *ods; |
453 | ||
454 | if (mfr_desc) { | |
455 | if (strlen(mfr_desc) >= sizeof ods->mfr_desc) { | |
456 | VLOG_WARN("truncating mfr_desc, must be less than %zu characters", | |
457 | sizeof ods->mfr_desc); | |
458 | } | |
459 | free(p->mfr_desc); | |
460 | p->mfr_desc = xstrdup(mfr_desc); | |
064af421 | 461 | } |
5a719c38 JP |
462 | if (hw_desc) { |
463 | if (strlen(hw_desc) >= sizeof ods->hw_desc) { | |
464 | VLOG_WARN("truncating hw_desc, must be less than %zu characters", | |
465 | sizeof ods->hw_desc); | |
466 | } | |
467 | free(p->hw_desc); | |
468 | p->hw_desc = xstrdup(hw_desc); | |
064af421 | 469 | } |
5a719c38 JP |
470 | if (sw_desc) { |
471 | if (strlen(sw_desc) >= sizeof ods->sw_desc) { | |
472 | VLOG_WARN("truncating sw_desc, must be less than %zu characters", | |
473 | sizeof ods->sw_desc); | |
474 | } | |
475 | free(p->sw_desc); | |
476 | p->sw_desc = xstrdup(sw_desc); | |
477 | } | |
478 | if (serial_desc) { | |
479 | if (strlen(serial_desc) >= sizeof ods->serial_num) { | |
480 | VLOG_WARN("truncating serial_desc, must be less than %zu " | |
481 | "characters", | |
482 | sizeof ods->serial_num); | |
483 | } | |
484 | free(p->serial_desc); | |
485 | p->serial_desc = xstrdup(serial_desc); | |
064af421 | 486 | } |
8abc4ed7 | 487 | if (dp_desc) { |
5a719c38 JP |
488 | if (strlen(dp_desc) >= sizeof ods->dp_desc) { |
489 | VLOG_WARN("truncating dp_desc, must be less than %zu characters", | |
490 | sizeof ods->dp_desc); | |
491 | } | |
8abc4ed7 JP |
492 | free(p->dp_desc); |
493 | p->dp_desc = xstrdup(dp_desc); | |
494 | } | |
064af421 BP |
495 | } |
496 | ||
064af421 | 497 | int |
81e2083f | 498 | ofproto_set_snoops(struct ofproto *ofproto, const struct sset *snoops) |
064af421 | 499 | { |
19a87e36 | 500 | return connmgr_set_snoops(ofproto->connmgr, snoops); |
064af421 BP |
501 | } |
502 | ||
503 | int | |
0193b2af JG |
504 | ofproto_set_netflow(struct ofproto *ofproto, |
505 | const struct netflow_options *nf_options) | |
064af421 | 506 | { |
abe529af BP |
507 | if (nf_options && sset_is_empty(&nf_options->collectors)) { |
508 | nf_options = NULL; | |
509 | } | |
510 | ||
511 | if (ofproto->ofproto_class->set_netflow) { | |
512 | return ofproto->ofproto_class->set_netflow(ofproto, nf_options); | |
064af421 | 513 | } else { |
abe529af | 514 | return nf_options ? EOPNOTSUPP : 0; |
064af421 BP |
515 | } |
516 | } | |
517 | ||
abe529af | 518 | int |
72b06300 BP |
519 | ofproto_set_sflow(struct ofproto *ofproto, |
520 | const struct ofproto_sflow_options *oso) | |
521 | { | |
abe529af BP |
522 | if (oso && sset_is_empty(&oso->targets)) { |
523 | oso = NULL; | |
524 | } | |
72b06300 | 525 | |
abe529af BP |
526 | if (ofproto->ofproto_class->set_sflow) { |
527 | return ofproto->ofproto_class->set_sflow(ofproto, oso); | |
72b06300 | 528 | } else { |
abe529af | 529 | return oso ? EOPNOTSUPP : 0; |
72b06300 BP |
530 | } |
531 | } | |
e7934396 BP |
532 | \f |
533 | /* Connectivity Fault Management configuration. */ | |
534 | ||
892815f5 | 535 | /* Clears the CFM configuration from 'ofp_port' on 'ofproto'. */ |
e7934396 | 536 | void |
892815f5 | 537 | ofproto_port_clear_cfm(struct ofproto *ofproto, uint16_t ofp_port) |
e7934396 | 538 | { |
abe529af BP |
539 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
540 | if (ofport && ofproto->ofproto_class->set_cfm) { | |
a5610457 | 541 | ofproto->ofproto_class->set_cfm(ofport, NULL); |
e7934396 BP |
542 | } |
543 | } | |
72b06300 | 544 | |
892815f5 | 545 | /* Configures connectivity fault management on 'ofp_port' in 'ofproto'. Takes |
93b8df38 EJ |
546 | * basic configuration from the configuration members in 'cfm', and the remote |
547 | * maintenance point ID from remote_mpid. Ignores the statistics members of | |
548 | * 'cfm'. | |
e7934396 | 549 | * |
892815f5 | 550 | * This function has no effect if 'ofproto' does not have a port 'ofp_port'. */ |
e7934396 | 551 | void |
892815f5 | 552 | ofproto_port_set_cfm(struct ofproto *ofproto, uint16_t ofp_port, |
a5610457 | 553 | const struct cfm_settings *s) |
e7934396 BP |
554 | { |
555 | struct ofport *ofport; | |
abe529af | 556 | int error; |
e7934396 | 557 | |
abe529af | 558 | ofport = ofproto_get_port(ofproto, ofp_port); |
e7934396 | 559 | if (!ofport) { |
892815f5 BP |
560 | VLOG_WARN("%s: cannot configure CFM on nonexistent port %"PRIu16, |
561 | ofproto->name, ofp_port); | |
e7934396 BP |
562 | return; |
563 | } | |
564 | ||
93b8df38 EJ |
565 | /* XXX: For configuration simplicity, we only support one remote_mpid |
566 | * outside of the CFM module. It's not clear if this is the correct long | |
567 | * term solution or not. */ | |
abe529af | 568 | error = (ofproto->ofproto_class->set_cfm |
a5610457 | 569 | ? ofproto->ofproto_class->set_cfm(ofport, s) |
abe529af BP |
570 | : EOPNOTSUPP); |
571 | if (error) { | |
572 | VLOG_WARN("%s: CFM configuration on port %"PRIu16" (%s) failed (%s)", | |
573 | ofproto->name, ofp_port, netdev_get_name(ofport->netdev), | |
574 | strerror(error)); | |
e7934396 | 575 | } |
e7934396 | 576 | } |
e7934396 | 577 | |
fa066f01 BP |
578 | /* Checks the status of LACP negotiation for 'ofp_port' within ofproto. |
579 | * Returns 1 if LACP partner information for 'ofp_port' is up-to-date, | |
580 | * 0 if LACP partner information is not current (generally indicating a | |
581 | * connectivity problem), or -1 if LACP is not enabled on 'ofp_port'. */ | |
582 | int | |
583 | ofproto_port_is_lacp_current(struct ofproto *ofproto, uint16_t ofp_port) | |
584 | { | |
abe529af BP |
585 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
586 | return (ofport && ofproto->ofproto_class->port_is_lacp_current | |
587 | ? ofproto->ofproto_class->port_is_lacp_current(ofport) | |
fa066f01 | 588 | : -1); |
e7934396 | 589 | } |
e7934396 | 590 | \f |
fa066f01 | 591 | /* Bundles. */ |
e7934396 | 592 | |
abe529af BP |
593 | /* Registers a "bundle" associated with client data pointer 'aux' in 'ofproto'. |
594 | * A bundle is the same concept as a Port in OVSDB, that is, it consists of one | |
595 | * or more "slave" devices (Interfaces, in OVSDB) along with a VLAN | |
596 | * configuration plus, if there is more than one slave, a bonding | |
597 | * configuration. | |
598 | * | |
599 | * If 'aux' is already registered then this function updates its configuration | |
600 | * to 's'. Otherwise, this function registers a new bundle. | |
601 | * | |
602 | * Bundles only affect the NXAST_AUTOPATH action and output to the OFPP_NORMAL | |
603 | * port. */ | |
604 | int | |
605 | ofproto_bundle_register(struct ofproto *ofproto, void *aux, | |
606 | const struct ofproto_bundle_settings *s) | |
fa066f01 | 607 | { |
abe529af BP |
608 | return (ofproto->ofproto_class->bundle_set |
609 | ? ofproto->ofproto_class->bundle_set(ofproto, aux, s) | |
610 | : EOPNOTSUPP); | |
fa066f01 BP |
611 | } |
612 | ||
abe529af BP |
613 | /* Unregisters the bundle registered on 'ofproto' with auxiliary data 'aux'. |
614 | * If no such bundle has been registered, this has no effect. */ | |
615 | int | |
616 | ofproto_bundle_unregister(struct ofproto *ofproto, void *aux) | |
e7934396 | 617 | { |
abe529af | 618 | return ofproto_bundle_register(ofproto, aux, NULL); |
e7934396 | 619 | } |
fa066f01 | 620 | |
e7934396 | 621 | \f |
abe529af BP |
622 | /* Registers a mirror associated with client data pointer 'aux' in 'ofproto'. |
623 | * If 'aux' is already registered then this function updates its configuration | |
624 | * to 's'. Otherwise, this function registers a new mirror. | |
625 | * | |
626 | * Mirrors affect only the treatment of packets output to the OFPP_NORMAL | |
627 | * port. */ | |
628 | int | |
629 | ofproto_mirror_register(struct ofproto *ofproto, void *aux, | |
630 | const struct ofproto_mirror_settings *s) | |
064af421 | 631 | { |
abe529af BP |
632 | return (ofproto->ofproto_class->mirror_set |
633 | ? ofproto->ofproto_class->mirror_set(ofproto, aux, s) | |
634 | : EOPNOTSUPP); | |
064af421 BP |
635 | } |
636 | ||
abe529af BP |
637 | /* Unregisters the mirror registered on 'ofproto' with auxiliary data 'aux'. |
638 | * If no mirror has been registered, this has no effect. */ | |
639 | int | |
640 | ofproto_mirror_unregister(struct ofproto *ofproto, void *aux) | |
064af421 | 641 | { |
abe529af | 642 | return ofproto_mirror_register(ofproto, aux, NULL); |
064af421 BP |
643 | } |
644 | ||
abe529af BP |
645 | /* Configures the VLANs whose bits are set to 1 in 'flood_vlans' as VLANs on |
646 | * which all packets are flooded, instead of using MAC learning. If | |
647 | * 'flood_vlans' is NULL, then MAC learning applies to all VLANs. | |
648 | * | |
649 | * Flood VLANs affect only the treatment of packets output to the OFPP_NORMAL | |
650 | * port. */ | |
651 | int | |
652 | ofproto_set_flood_vlans(struct ofproto *ofproto, unsigned long *flood_vlans) | |
abdfe474 | 653 | { |
abe529af BP |
654 | return (ofproto->ofproto_class->set_flood_vlans |
655 | ? ofproto->ofproto_class->set_flood_vlans(ofproto, flood_vlans) | |
656 | : EOPNOTSUPP); | |
abdfe474 JP |
657 | } |
658 | ||
abe529af BP |
659 | /* Returns true if 'aux' is a registered bundle that is currently in use as the |
660 | * output for a mirror. */ | |
661 | bool | |
662 | ofproto_is_mirror_output_bundle(struct ofproto *ofproto, void *aux) | |
663 | { | |
664 | return (ofproto->ofproto_class->is_mirror_output_bundle | |
665 | ? ofproto->ofproto_class->is_mirror_output_bundle(ofproto, aux) | |
666 | : false); | |
667 | } | |
668 | \f | |
81e2083f BP |
669 | bool |
670 | ofproto_has_snoops(const struct ofproto *ofproto) | |
671 | { | |
672 | return connmgr_has_snoops(ofproto->connmgr); | |
673 | } | |
674 | ||
064af421 | 675 | void |
81e2083f | 676 | ofproto_get_snoops(const struct ofproto *ofproto, struct sset *snoops) |
064af421 | 677 | { |
19a87e36 | 678 | connmgr_get_snoops(ofproto->connmgr, snoops); |
064af421 BP |
679 | } |
680 | ||
7ee20df1 BP |
681 | static void |
682 | ofproto_flush__(struct ofproto *ofproto) | |
683 | { | |
684 | struct classifier *table; | |
685 | struct ofopgroup *group; | |
686 | ||
687 | if (ofproto->ofproto_class->flush) { | |
688 | ofproto->ofproto_class->flush(ofproto); | |
689 | } | |
690 | ||
7024dffe | 691 | group = ofopgroup_create_unattached(ofproto); |
b772ded8 | 692 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { |
7ee20df1 BP |
693 | struct rule *rule, *next_rule; |
694 | struct cls_cursor cursor; | |
695 | ||
696 | cls_cursor_init(&cursor, table, NULL); | |
697 | CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, cr, &cursor) { | |
698 | if (!rule->pending) { | |
699 | ofoperation_create(group, rule, OFOPERATION_DELETE); | |
700 | classifier_remove(table, &rule->cr); | |
701 | ofproto->ofproto_class->rule_destruct(rule); | |
702 | } | |
703 | } | |
704 | } | |
705 | ofopgroup_submit(group); | |
706 | } | |
707 | ||
abe529af BP |
708 | static void |
709 | ofproto_destroy__(struct ofproto *ofproto) | |
710 | { | |
b772ded8 | 711 | struct classifier *table; |
6c1491fb | 712 | |
7ee20df1 | 713 | assert(list_is_empty(&ofproto->pending)); |
dd5616b3 | 714 | assert(!ofproto->n_pending); |
7ee20df1 | 715 | |
abe529af | 716 | connmgr_destroy(ofproto->connmgr); |
fa066f01 | 717 | |
abe529af BP |
718 | hmap_remove(&all_ofprotos, &ofproto->hmap_node); |
719 | free(ofproto->name); | |
955a7127 | 720 | free(ofproto->type); |
abe529af BP |
721 | free(ofproto->mfr_desc); |
722 | free(ofproto->hw_desc); | |
723 | free(ofproto->sw_desc); | |
724 | free(ofproto->serial_desc); | |
725 | free(ofproto->dp_desc); | |
abe529af BP |
726 | hmap_destroy(&ofproto->ports); |
727 | shash_destroy(&ofproto->port_by_name); | |
6c1491fb | 728 | |
b772ded8 BP |
729 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { |
730 | assert(classifier_is_empty(table)); | |
731 | classifier_destroy(table); | |
6c1491fb BP |
732 | } |
733 | free(ofproto->tables); | |
fa066f01 | 734 | |
7ee20df1 BP |
735 | hmap_destroy(&ofproto->deletions); |
736 | ||
abe529af BP |
737 | ofproto->ofproto_class->dealloc(ofproto); |
738 | } | |
fa066f01 | 739 | |
064af421 BP |
740 | void |
741 | ofproto_destroy(struct ofproto *p) | |
742 | { | |
ca0f572c | 743 | struct ofport *ofport, *next_ofport; |
064af421 BP |
744 | |
745 | if (!p) { | |
746 | return; | |
747 | } | |
748 | ||
7ee20df1 | 749 | ofproto_flush__(p); |
4e8e4213 | 750 | HMAP_FOR_EACH_SAFE (ofport, next_ofport, hmap_node, &p->ports) { |
abe529af | 751 | ofport_destroy(ofport); |
064af421 | 752 | } |
064af421 | 753 | |
abe529af BP |
754 | p->ofproto_class->destruct(p); |
755 | ofproto_destroy__(p); | |
064af421 BP |
756 | } |
757 | ||
abe529af BP |
758 | /* Destroys the datapath with the respective 'name' and 'type'. With the Linux |
759 | * kernel datapath, for example, this destroys the datapath in the kernel, and | |
760 | * with the netdev-based datapath, it tears down the data structures that | |
761 | * represent the datapath. | |
762 | * | |
763 | * The datapath should not be currently open as an ofproto. */ | |
064af421 | 764 | int |
abe529af | 765 | ofproto_delete(const char *name, const char *type) |
064af421 | 766 | { |
abe529af BP |
767 | const struct ofproto_class *class = ofproto_class_find__(type); |
768 | return (!class ? EAFNOSUPPORT | |
769 | : !class->del ? EACCES | |
770 | : class->del(type, name)); | |
064af421 BP |
771 | } |
772 | ||
e9e28be3 BP |
773 | static void |
774 | process_port_change(struct ofproto *ofproto, int error, char *devname) | |
775 | { | |
776 | if (error == ENOBUFS) { | |
777 | reinit_ports(ofproto); | |
778 | } else if (!error) { | |
779 | update_port(ofproto, devname); | |
780 | free(devname); | |
781 | } | |
782 | } | |
783 | ||
064af421 | 784 | int |
abe529af | 785 | ofproto_run(struct ofproto *p) |
064af421 | 786 | { |
031d8bff | 787 | struct ofport *ofport; |
064af421 BP |
788 | char *devname; |
789 | int error; | |
064af421 | 790 | |
abe529af BP |
791 | error = p->ofproto_class->run(p); |
792 | if (error == ENODEV) { | |
793 | /* Someone destroyed the datapath behind our back. The caller | |
794 | * better destroy us and give up, because we're just going to | |
795 | * spin from here on out. */ | |
796 | static struct vlog_rate_limit rl2 = VLOG_RATE_LIMIT_INIT(1, 5); | |
797 | VLOG_ERR_RL(&rl2, "%s: datapath was destroyed externally", | |
798 | p->name); | |
799 | return ENODEV; | |
149f577a JG |
800 | } |
801 | ||
5bf0e941 BP |
802 | if (p->ofproto_class->port_poll) { |
803 | while ((error = p->ofproto_class->port_poll(p, &devname)) != EAGAIN) { | |
804 | process_port_change(p, error, devname); | |
064af421 | 805 | } |
e9e28be3 | 806 | } |
031d8bff EJ |
807 | |
808 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
809 | unsigned int change_seq = netdev_change_seq(ofport->netdev); | |
810 | if (ofport->change_seq != change_seq) { | |
811 | ofport->change_seq = change_seq; | |
812 | update_port(p, netdev_get_name(ofport->netdev)); | |
813 | } | |
064af421 BP |
814 | } |
815 | ||
7ee20df1 BP |
816 | |
817 | switch (p->state) { | |
818 | case S_OPENFLOW: | |
819 | connmgr_run(p->connmgr, handle_openflow); | |
820 | break; | |
821 | ||
822 | case S_FLUSH: | |
823 | connmgr_run(p->connmgr, NULL); | |
824 | ofproto_flush__(p); | |
825 | if (list_is_empty(&p->pending) && hmap_is_empty(&p->deletions)) { | |
826 | connmgr_flushed(p->connmgr); | |
827 | p->state = S_OPENFLOW; | |
828 | } | |
829 | break; | |
830 | ||
831 | default: | |
832 | NOT_REACHED(); | |
833 | } | |
064af421 | 834 | |
064af421 BP |
835 | return 0; |
836 | } | |
837 | ||
838 | void | |
839 | ofproto_wait(struct ofproto *p) | |
840 | { | |
031d8bff EJ |
841 | struct ofport *ofport; |
842 | ||
abe529af | 843 | p->ofproto_class->wait(p); |
5bf0e941 BP |
844 | if (p->ofproto_class->port_poll_wait) { |
845 | p->ofproto_class->port_poll_wait(p); | |
e7934396 | 846 | } |
031d8bff EJ |
847 | |
848 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
849 | if (ofport->change_seq != netdev_change_seq(ofport->netdev)) { | |
850 | poll_immediate_wake(); | |
851 | } | |
852 | } | |
7ee20df1 BP |
853 | |
854 | switch (p->state) { | |
855 | case S_OPENFLOW: | |
856 | connmgr_wait(p->connmgr, true); | |
857 | break; | |
858 | ||
859 | case S_FLUSH: | |
860 | connmgr_wait(p->connmgr, false); | |
861 | if (list_is_empty(&p->pending) && hmap_is_empty(&p->deletions)) { | |
862 | poll_immediate_wake(); | |
863 | } | |
864 | break; | |
865 | } | |
064af421 BP |
866 | } |
867 | ||
064af421 BP |
868 | bool |
869 | ofproto_is_alive(const struct ofproto *p) | |
870 | { | |
19a87e36 | 871 | return connmgr_has_controllers(p->connmgr); |
064af421 BP |
872 | } |
873 | ||
bffc0589 | 874 | void |
2cdcb898 | 875 | ofproto_get_ofproto_controller_info(const struct ofproto *ofproto, |
bffc0589 AE |
876 | struct shash *info) |
877 | { | |
19a87e36 | 878 | connmgr_get_controller_info(ofproto->connmgr, info); |
bffc0589 AE |
879 | } |
880 | ||
881 | void | |
882 | ofproto_free_ofproto_controller_info(struct shash *info) | |
883 | { | |
72ba2ed3 | 884 | connmgr_free_controller_info(info); |
bffc0589 AE |
885 | } |
886 | ||
b5827b24 BP |
887 | /* Makes a deep copy of 'old' into 'port'. */ |
888 | void | |
889 | ofproto_port_clone(struct ofproto_port *port, const struct ofproto_port *old) | |
890 | { | |
891 | port->name = xstrdup(old->name); | |
892 | port->type = xstrdup(old->type); | |
893 | port->ofp_port = old->ofp_port; | |
894 | } | |
895 | ||
896 | /* Frees memory allocated to members of 'ofproto_port'. | |
3a6ccc8c | 897 | * |
b5827b24 BP |
898 | * Do not call this function on an ofproto_port obtained from |
899 | * ofproto_port_dump_next(): that function retains ownership of the data in the | |
900 | * ofproto_port. */ | |
901 | void | |
902 | ofproto_port_destroy(struct ofproto_port *ofproto_port) | |
903 | { | |
904 | free(ofproto_port->name); | |
905 | free(ofproto_port->type); | |
906 | } | |
907 | ||
b5827b24 | 908 | /* Initializes 'dump' to begin dumping the ports in an ofproto. |
3a6ccc8c | 909 | * |
b5827b24 BP |
910 | * This function provides no status indication. An error status for the entire |
911 | * dump operation is provided when it is completed by calling | |
912 | * ofproto_port_dump_done(). | |
913 | */ | |
914 | void | |
915 | ofproto_port_dump_start(struct ofproto_port_dump *dump, | |
916 | const struct ofproto *ofproto) | |
917 | { | |
abe529af BP |
918 | dump->ofproto = ofproto; |
919 | dump->error = ofproto->ofproto_class->port_dump_start(ofproto, | |
920 | &dump->state); | |
b5827b24 BP |
921 | } |
922 | ||
923 | /* Attempts to retrieve another port from 'dump', which must have been created | |
924 | * with ofproto_port_dump_start(). On success, stores a new ofproto_port into | |
925 | * 'port' and returns true. On failure, returns false. | |
926 | * | |
927 | * Failure might indicate an actual error or merely that the last port has been | |
928 | * dumped. An error status for the entire dump operation is provided when it | |
929 | * is completed by calling ofproto_port_dump_done(). | |
930 | * | |
931 | * The ofproto owns the data stored in 'port'. It will remain valid until at | |
932 | * least the next time 'dump' is passed to ofproto_port_dump_next() or | |
933 | * ofproto_port_dump_done(). */ | |
934 | bool | |
935 | ofproto_port_dump_next(struct ofproto_port_dump *dump, | |
936 | struct ofproto_port *port) | |
937 | { | |
abe529af BP |
938 | const struct ofproto *ofproto = dump->ofproto; |
939 | ||
940 | if (dump->error) { | |
941 | return false; | |
942 | } | |
b5827b24 | 943 | |
abe529af BP |
944 | dump->error = ofproto->ofproto_class->port_dump_next(ofproto, dump->state, |
945 | port); | |
946 | if (dump->error) { | |
947 | ofproto->ofproto_class->port_dump_done(ofproto, dump->state); | |
948 | return false; | |
b5827b24 | 949 | } |
abe529af | 950 | return true; |
b5827b24 BP |
951 | } |
952 | ||
953 | /* Completes port table dump operation 'dump', which must have been created | |
954 | * with ofproto_port_dump_start(). Returns 0 if the dump operation was | |
955 | * error-free, otherwise a positive errno value describing the problem. */ | |
3a6ccc8c | 956 | int |
b5827b24 | 957 | ofproto_port_dump_done(struct ofproto_port_dump *dump) |
3a6ccc8c | 958 | { |
abe529af BP |
959 | const struct ofproto *ofproto = dump->ofproto; |
960 | if (!dump->error) { | |
961 | dump->error = ofproto->ofproto_class->port_dump_done(ofproto, | |
962 | dump->state); | |
963 | } | |
964 | return dump->error == EOF ? 0 : dump->error; | |
b5827b24 BP |
965 | } |
966 | ||
967 | /* Attempts to add 'netdev' as a port on 'ofproto'. If successful, returns 0 | |
892815f5 | 968 | * and sets '*ofp_portp' to the new port's OpenFlow port number (if 'ofp_portp' |
b5827b24 BP |
969 | * is non-null). On failure, returns a positive errno value and sets |
970 | * '*ofp_portp' to OFPP_NONE (if 'ofp_portp' is non-null). */ | |
971 | int | |
972 | ofproto_port_add(struct ofproto *ofproto, struct netdev *netdev, | |
973 | uint16_t *ofp_portp) | |
974 | { | |
abe529af | 975 | uint16_t ofp_port; |
3a6ccc8c BP |
976 | int error; |
977 | ||
abe529af | 978 | error = ofproto->ofproto_class->port_add(ofproto, netdev, &ofp_port); |
1fa24dea BP |
979 | if (!error) { |
980 | update_port(ofproto, netdev_get_name(netdev)); | |
981 | } | |
b5827b24 | 982 | if (ofp_portp) { |
abe529af | 983 | *ofp_portp = error ? OFPP_NONE : ofp_port; |
3a6ccc8c BP |
984 | } |
985 | return error; | |
986 | } | |
987 | ||
b5827b24 BP |
988 | /* Looks up a port named 'devname' in 'ofproto'. On success, returns 0 and |
989 | * initializes '*port' appropriately; on failure, returns a positive errno | |
990 | * value. | |
991 | * | |
abe529af | 992 | * The caller owns the data in 'ofproto_port' and must free it with |
b5827b24 BP |
993 | * ofproto_port_destroy() when it is no longer needed. */ |
994 | int | |
995 | ofproto_port_query_by_name(const struct ofproto *ofproto, const char *devname, | |
996 | struct ofproto_port *port) | |
a4e2e1f2 | 997 | { |
b5827b24 BP |
998 | int error; |
999 | ||
abe529af BP |
1000 | error = ofproto->ofproto_class->port_query_by_name(ofproto, devname, port); |
1001 | if (error) { | |
1002 | memset(port, 0, sizeof *port); | |
b5827b24 BP |
1003 | } |
1004 | return error; | |
a4e2e1f2 EJ |
1005 | } |
1006 | ||
b5827b24 | 1007 | /* Deletes port number 'ofp_port' from the datapath for 'ofproto'. |
3a6ccc8c | 1008 | * Returns 0 if successful, otherwise a positive errno. */ |
064af421 | 1009 | int |
b5827b24 | 1010 | ofproto_port_del(struct ofproto *ofproto, uint16_t ofp_port) |
064af421 | 1011 | { |
abe529af | 1012 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
1264ec95 | 1013 | const char *name = ofport ? netdev_get_name(ofport->netdev) : "<unknown>"; |
3cf10406 | 1014 | int error; |
cdee00fd | 1015 | |
abe529af | 1016 | error = ofproto->ofproto_class->port_del(ofproto, ofp_port); |
892815f5 | 1017 | if (!error && ofport) { |
1264ec95 BP |
1018 | /* 'name' is the netdev's name and update_port() is going to close the |
1019 | * netdev. Just in case update_port() refers to 'name' after it | |
3a6ccc8c BP |
1020 | * destroys 'ofport', make a copy of it around the update_port() |
1021 | * call. */ | |
1022 | char *devname = xstrdup(name); | |
1023 | update_port(ofproto, devname); | |
1024 | free(devname); | |
3cf10406 BP |
1025 | } |
1026 | return error; | |
064af421 BP |
1027 | } |
1028 | ||
6c1491fb | 1029 | /* Adds a flow to OpenFlow flow table 0 in 'p' that matches 'cls_rule' and |
fa8b054f BP |
1030 | * performs the 'n_actions' actions in 'actions'. The new flow will not |
1031 | * timeout. | |
1032 | * | |
1033 | * If cls_rule->priority is in the range of priorities supported by OpenFlow | |
1034 | * (0...65535, inclusive) then the flow will be visible to OpenFlow | |
1035 | * controllers; otherwise, it will be hidden. | |
1036 | * | |
6c1491fb BP |
1037 | * The caller retains ownership of 'cls_rule' and 'actions'. |
1038 | * | |
1039 | * This is a helper function for in-band control and fail-open. */ | |
064af421 | 1040 | void |
7ee20df1 | 1041 | ofproto_add_flow(struct ofproto *ofproto, const struct cls_rule *cls_rule, |
fa8b054f | 1042 | const union ofp_action *actions, size_t n_actions) |
064af421 | 1043 | { |
7ee20df1 BP |
1044 | const struct rule *rule; |
1045 | ||
1046 | rule = rule_from_cls_rule(classifier_find_rule_exactly( | |
1047 | &ofproto->tables[0], cls_rule)); | |
1048 | if (!rule || !ofputil_actions_equal(rule->actions, rule->n_actions, | |
1049 | actions, n_actions)) { | |
a9a2da38 | 1050 | struct ofputil_flow_mod fm; |
7ee20df1 BP |
1051 | |
1052 | memset(&fm, 0, sizeof fm); | |
1053 | fm.cr = *cls_rule; | |
1054 | fm.buffer_id = UINT32_MAX; | |
1055 | fm.actions = (union ofp_action *) actions; | |
1056 | fm.n_actions = n_actions; | |
1057 | add_flow(ofproto, NULL, &fm, NULL); | |
1058 | } | |
064af421 BP |
1059 | } |
1060 | ||
75a75043 BP |
1061 | /* Executes the flow modification specified in 'fm'. Returns 0 on success, an |
1062 | * OpenFlow error code as encoded by ofp_mkerr() on failure, or | |
1063 | * OFPROTO_POSTPONE if the operation cannot be initiated now but may be retried | |
1064 | * later. | |
1065 | * | |
1066 | * This is a helper function for in-band control and fail-open. */ | |
1067 | int | |
1068 | ofproto_flow_mod(struct ofproto *ofproto, const struct ofputil_flow_mod *fm) | |
1069 | { | |
1070 | return handle_flow_mod__(ofproto, NULL, fm, NULL); | |
1071 | } | |
1072 | ||
6c1491fb BP |
1073 | /* Searches for a rule with matching criteria exactly equal to 'target' in |
1074 | * ofproto's table 0 and, if it finds one, deletes it. | |
1075 | * | |
1076 | * This is a helper function for in-band control and fail-open. */ | |
7ee20df1 | 1077 | bool |
cf3fad8a | 1078 | ofproto_delete_flow(struct ofproto *ofproto, const struct cls_rule *target) |
064af421 BP |
1079 | { |
1080 | struct rule *rule; | |
1081 | ||
6c1491fb BP |
1082 | rule = rule_from_cls_rule(classifier_find_rule_exactly( |
1083 | &ofproto->tables[0], target)); | |
7ee20df1 BP |
1084 | if (!rule) { |
1085 | /* No such rule -> success. */ | |
1086 | return true; | |
1087 | } else if (rule->pending) { | |
1088 | /* An operation on the rule is already pending -> failure. | |
1089 | * Caller must retry later if it's important. */ | |
1090 | return false; | |
1091 | } else { | |
1092 | /* Initiate deletion -> success. */ | |
7024dffe | 1093 | struct ofopgroup *group = ofopgroup_create_unattached(ofproto); |
7ee20df1 BP |
1094 | ofoperation_create(group, rule, OFOPERATION_DELETE); |
1095 | classifier_remove(&ofproto->tables[rule->table_id], &rule->cr); | |
1096 | rule->ofproto->ofproto_class->rule_destruct(rule); | |
1097 | ofopgroup_submit(group); | |
1098 | return true; | |
bcf84111 | 1099 | } |
5ecc9d81 | 1100 | |
142e1f5c BP |
1101 | } |
1102 | ||
7ee20df1 BP |
1103 | /* Starts the process of deleting all of the flows from all of ofproto's flow |
1104 | * tables and then reintroducing the flows required by in-band control and | |
1105 | * fail-open. The process will complete in a later call to ofproto_run(). */ | |
142e1f5c BP |
1106 | void |
1107 | ofproto_flush_flows(struct ofproto *ofproto) | |
1108 | { | |
7ee20df1 BP |
1109 | COVERAGE_INC(ofproto_flush); |
1110 | ofproto->state = S_FLUSH; | |
064af421 BP |
1111 | } |
1112 | \f | |
1113 | static void | |
1114 | reinit_ports(struct ofproto *p) | |
1115 | { | |
abe529af | 1116 | struct ofproto_port_dump dump; |
b3c01ed3 | 1117 | struct sset devnames; |
064af421 | 1118 | struct ofport *ofport; |
abe529af | 1119 | struct ofproto_port ofproto_port; |
b3c01ed3 | 1120 | const char *devname; |
064af421 | 1121 | |
898bf89d JP |
1122 | COVERAGE_INC(ofproto_reinit_ports); |
1123 | ||
b3c01ed3 | 1124 | sset_init(&devnames); |
4e8e4213 | 1125 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { |
1264ec95 | 1126 | sset_add(&devnames, netdev_get_name(ofport->netdev)); |
064af421 | 1127 | } |
abe529af BP |
1128 | OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) { |
1129 | sset_add(&devnames, ofproto_port.name); | |
064af421 | 1130 | } |
064af421 | 1131 | |
b3c01ed3 BP |
1132 | SSET_FOR_EACH (devname, &devnames) { |
1133 | update_port(p, devname); | |
064af421 | 1134 | } |
b3c01ed3 | 1135 | sset_destroy(&devnames); |
064af421 BP |
1136 | } |
1137 | ||
abe529af BP |
1138 | /* Opens and returns a netdev for 'ofproto_port', or a null pointer if the |
1139 | * netdev cannot be opened. On success, also fills in 'opp'. */ | |
b33951b8 | 1140 | static struct netdev * |
abe529af | 1141 | ofport_open(const struct ofproto_port *ofproto_port, struct ofp_phy_port *opp) |
064af421 | 1142 | { |
118c4676 | 1143 | uint32_t curr, advertised, supported, peer; |
064af421 | 1144 | enum netdev_flags flags; |
064af421 | 1145 | struct netdev *netdev; |
064af421 BP |
1146 | int error; |
1147 | ||
18812dff | 1148 | error = netdev_open(ofproto_port->name, ofproto_port->type, &netdev); |
064af421 BP |
1149 | if (error) { |
1150 | VLOG_WARN_RL(&rl, "ignoring port %s (%"PRIu16") because netdev %s " | |
1151 | "cannot be opened (%s)", | |
abe529af BP |
1152 | ofproto_port->name, ofproto_port->ofp_port, |
1153 | ofproto_port->name, strerror(error)); | |
064af421 BP |
1154 | return NULL; |
1155 | } | |
1156 | ||
064af421 | 1157 | netdev_get_flags(netdev, &flags); |
118c4676 | 1158 | netdev_get_features(netdev, &curr, &advertised, &supported, &peer); |
064af421 | 1159 | |
abe529af | 1160 | opp->port_no = htons(ofproto_port->ofp_port); |
b33951b8 | 1161 | netdev_get_etheraddr(netdev, opp->hw_addr); |
abe529af | 1162 | ovs_strzcpy(opp->name, ofproto_port->name, sizeof opp->name); |
118c4676 BP |
1163 | opp->config = flags & NETDEV_UP ? 0 : htonl(OFPPC_PORT_DOWN); |
1164 | opp->state = netdev_get_carrier(netdev) ? 0 : htonl(OFPPS_LINK_DOWN); | |
1165 | opp->curr = htonl(curr); | |
1166 | opp->advertised = htonl(advertised); | |
1167 | opp->supported = htonl(supported); | |
1168 | opp->peer = htonl(peer); | |
1169 | ||
b33951b8 | 1170 | return netdev; |
064af421 BP |
1171 | } |
1172 | ||
b33951b8 BP |
1173 | /* Returns true if most fields of 'a' and 'b' are equal. Differences in name, |
1174 | * port number, and 'config' bits other than OFPPC_PORT_DOWN are | |
1175 | * disregarded. */ | |
1176 | static bool | |
1177 | ofport_equal(const struct ofp_phy_port *a, const struct ofp_phy_port *b) | |
064af421 | 1178 | { |
064af421 | 1179 | BUILD_ASSERT_DECL(sizeof *a == 48); /* Detect ofp_phy_port changes. */ |
b33951b8 | 1180 | return (!memcmp(a->hw_addr, b->hw_addr, sizeof a->hw_addr) |
064af421 | 1181 | && a->state == b->state |
118c4676 | 1182 | && !((a->config ^ b->config) & htonl(OFPPC_PORT_DOWN)) |
064af421 BP |
1183 | && a->curr == b->curr |
1184 | && a->advertised == b->advertised | |
1185 | && a->supported == b->supported | |
1186 | && a->peer == b->peer); | |
1187 | } | |
1188 | ||
b33951b8 BP |
1189 | /* Adds an ofport to 'p' initialized based on the given 'netdev' and 'opp'. |
1190 | * The caller must ensure that 'p' does not have a conflicting ofport (that is, | |
1191 | * one with the same name or port number). */ | |
064af421 | 1192 | static void |
b33951b8 BP |
1193 | ofport_install(struct ofproto *p, |
1194 | struct netdev *netdev, const struct ofp_phy_port *opp) | |
064af421 | 1195 | { |
b33951b8 BP |
1196 | const char *netdev_name = netdev_get_name(netdev); |
1197 | struct ofport *ofport; | |
9197df76 | 1198 | int dev_mtu; |
abe529af | 1199 | int error; |
72b06300 | 1200 | |
b33951b8 | 1201 | /* Create ofport. */ |
abe529af BP |
1202 | ofport = p->ofproto_class->port_alloc(); |
1203 | if (!ofport) { | |
1204 | error = ENOMEM; | |
1205 | goto error; | |
1206 | } | |
0f7d71a5 | 1207 | ofport->ofproto = p; |
b33951b8 | 1208 | ofport->netdev = netdev; |
031d8bff | 1209 | ofport->change_seq = netdev_change_seq(netdev); |
b33951b8 | 1210 | ofport->opp = *opp; |
abe529af | 1211 | ofport->ofp_port = ntohs(opp->port_no); |
b33951b8 BP |
1212 | |
1213 | /* Add port to 'p'. */ | |
abe529af | 1214 | hmap_insert(&p->ports, &ofport->hmap_node, hash_int(ofport->ofp_port, 0)); |
72b06300 | 1215 | shash_add(&p->port_by_name, netdev_name, ofport); |
abe529af | 1216 | |
9197df76 JP |
1217 | if (!netdev_get_mtu(netdev, &dev_mtu)) { |
1218 | set_internal_devs_mtu(p); | |
1219 | ofport->mtu = dev_mtu; | |
1220 | } else { | |
1221 | ofport->mtu = 0; | |
1222 | } | |
1223 | ||
abe529af BP |
1224 | /* Let the ofproto_class initialize its private data. */ |
1225 | error = p->ofproto_class->port_construct(ofport); | |
1226 | if (error) { | |
1227 | goto error; | |
1228 | } | |
1229 | connmgr_send_port_status(p->connmgr, opp, OFPPR_ADD); | |
1230 | return; | |
1231 | ||
1232 | error: | |
1233 | VLOG_WARN_RL(&rl, "%s: could not add port %s (%s)", | |
1234 | p->name, netdev_name, strerror(error)); | |
1235 | if (ofport) { | |
1236 | ofport_destroy__(ofport); | |
1237 | } else { | |
1238 | netdev_close(netdev); | |
72b06300 | 1239 | } |
064af421 BP |
1240 | } |
1241 | ||
b33951b8 | 1242 | /* Removes 'ofport' from 'p' and destroys it. */ |
064af421 | 1243 | static void |
0f7d71a5 | 1244 | ofport_remove(struct ofport *ofport) |
064af421 | 1245 | { |
fa066f01 BP |
1246 | connmgr_send_port_status(ofport->ofproto->connmgr, &ofport->opp, |
1247 | OFPPR_DELETE); | |
abe529af | 1248 | ofport_destroy(ofport); |
b33951b8 BP |
1249 | } |
1250 | ||
1251 | /* If 'ofproto' contains an ofport named 'name', removes it from 'ofproto' and | |
1252 | * destroys it. */ | |
1253 | static void | |
1254 | ofport_remove_with_name(struct ofproto *ofproto, const char *name) | |
1255 | { | |
1256 | struct ofport *port = shash_find_data(&ofproto->port_by_name, name); | |
1257 | if (port) { | |
0f7d71a5 | 1258 | ofport_remove(port); |
b33951b8 BP |
1259 | } |
1260 | } | |
1261 | ||
38775ab5 | 1262 | /* Updates 'port' with new 'opp' description. |
b33951b8 BP |
1263 | * |
1264 | * Does not handle a name or port number change. The caller must implement | |
1265 | * such a change as a delete followed by an add. */ | |
1266 | static void | |
abe529af | 1267 | ofport_modified(struct ofport *port, struct ofp_phy_port *opp) |
b33951b8 BP |
1268 | { |
1269 | memcpy(port->opp.hw_addr, opp->hw_addr, ETH_ADDR_LEN); | |
118c4676 BP |
1270 | port->opp.config = ((port->opp.config & ~htonl(OFPPC_PORT_DOWN)) |
1271 | | (opp->config & htonl(OFPPC_PORT_DOWN))); | |
b33951b8 BP |
1272 | port->opp.state = opp->state; |
1273 | port->opp.curr = opp->curr; | |
1274 | port->opp.advertised = opp->advertised; | |
1275 | port->opp.supported = opp->supported; | |
1276 | port->opp.peer = opp->peer; | |
1277 | ||
abe529af | 1278 | connmgr_send_port_status(port->ofproto->connmgr, &port->opp, OFPPR_MODIFY); |
064af421 BP |
1279 | } |
1280 | ||
abe529af BP |
1281 | void |
1282 | ofproto_port_unregister(struct ofproto *ofproto, uint16_t ofp_port) | |
e7934396 | 1283 | { |
abe529af BP |
1284 | struct ofport *port = ofproto_get_port(ofproto, ofp_port); |
1285 | if (port) { | |
1286 | if (port->ofproto->ofproto_class->set_cfm) { | |
a5610457 | 1287 | port->ofproto->ofproto_class->set_cfm(port, NULL); |
abe529af BP |
1288 | } |
1289 | if (port->ofproto->ofproto_class->bundle_remove) { | |
1290 | port->ofproto->ofproto_class->bundle_remove(port); | |
e7934396 BP |
1291 | } |
1292 | } | |
1293 | } | |
1294 | ||
1295 | static void | |
abe529af | 1296 | ofport_destroy__(struct ofport *port) |
e7934396 | 1297 | { |
abe529af BP |
1298 | struct ofproto *ofproto = port->ofproto; |
1299 | const char *name = netdev_get_name(port->netdev); | |
fa066f01 | 1300 | |
abe529af BP |
1301 | hmap_remove(&ofproto->ports, &port->hmap_node); |
1302 | shash_delete(&ofproto->port_by_name, | |
1303 | shash_find(&ofproto->port_by_name, name)); | |
fa066f01 | 1304 | |
abe529af BP |
1305 | netdev_close(port->netdev); |
1306 | ofproto->ofproto_class->port_dealloc(port); | |
e7934396 BP |
1307 | } |
1308 | ||
064af421 | 1309 | static void |
abe529af | 1310 | ofport_destroy(struct ofport *port) |
064af421 | 1311 | { |
fa066f01 | 1312 | if (port) { |
abe529af BP |
1313 | port->ofproto->ofproto_class->port_destruct(port); |
1314 | ofport_destroy__(port); | |
1315 | } | |
064af421 BP |
1316 | } |
1317 | ||
abe529af BP |
1318 | struct ofport * |
1319 | ofproto_get_port(const struct ofproto *ofproto, uint16_t ofp_port) | |
ca0f572c BP |
1320 | { |
1321 | struct ofport *port; | |
1322 | ||
4e8e4213 | 1323 | HMAP_FOR_EACH_IN_BUCKET (port, hmap_node, |
abe529af BP |
1324 | hash_int(ofp_port, 0), &ofproto->ports) { |
1325 | if (port->ofp_port == ofp_port) { | |
ca0f572c BP |
1326 | return port; |
1327 | } | |
1328 | } | |
1329 | return NULL; | |
1330 | } | |
1331 | ||
064af421 | 1332 | static void |
b33951b8 | 1333 | update_port(struct ofproto *ofproto, const char *name) |
064af421 | 1334 | { |
abe529af | 1335 | struct ofproto_port ofproto_port; |
b33951b8 BP |
1336 | struct ofp_phy_port opp; |
1337 | struct netdev *netdev; | |
1338 | struct ofport *port; | |
064af421 BP |
1339 | |
1340 | COVERAGE_INC(ofproto_update_port); | |
c874dc6d | 1341 | |
b33951b8 | 1342 | /* Fetch 'name''s location and properties from the datapath. */ |
abe529af BP |
1343 | netdev = (!ofproto_port_query_by_name(ofproto, name, &ofproto_port) |
1344 | ? ofport_open(&ofproto_port, &opp) | |
b33951b8 BP |
1345 | : NULL); |
1346 | if (netdev) { | |
abe529af | 1347 | port = ofproto_get_port(ofproto, ofproto_port.ofp_port); |
b33951b8 | 1348 | if (port && !strcmp(netdev_get_name(port->netdev), name)) { |
e65942a0 | 1349 | struct netdev *old_netdev = port->netdev; |
9197df76 | 1350 | int dev_mtu; |
e65942a0 | 1351 | |
b33951b8 BP |
1352 | /* 'name' hasn't changed location. Any properties changed? */ |
1353 | if (!ofport_equal(&port->opp, &opp)) { | |
abe529af BP |
1354 | ofport_modified(port, &opp); |
1355 | } | |
1356 | ||
9197df76 JP |
1357 | /* If this is a non-internal port and the MTU changed, check |
1358 | * if the datapath's MTU needs to be updated. */ | |
1359 | if (strcmp(netdev_get_type(netdev), "internal") | |
1360 | && !netdev_get_mtu(netdev, &dev_mtu) | |
1361 | && port->mtu != dev_mtu) { | |
1362 | set_internal_devs_mtu(ofproto); | |
1363 | port->mtu = dev_mtu; | |
1364 | } | |
1365 | ||
e65942a0 BP |
1366 | /* Install the newly opened netdev in case it has changed. |
1367 | * Don't close the old netdev yet in case port_modified has to | |
1368 | * remove a retained reference to it.*/ | |
abe529af | 1369 | port->netdev = netdev; |
031d8bff | 1370 | port->change_seq = netdev_change_seq(netdev); |
abe529af BP |
1371 | |
1372 | if (port->ofproto->ofproto_class->port_modified) { | |
1373 | port->ofproto->ofproto_class->port_modified(port); | |
b33951b8 | 1374 | } |
e65942a0 BP |
1375 | |
1376 | netdev_close(old_netdev); | |
b33951b8 BP |
1377 | } else { |
1378 | /* If 'port' is nonnull then its name differs from 'name' and thus | |
1379 | * we should delete it. If we think there's a port named 'name' | |
1380 | * then its port number must be wrong now so delete it too. */ | |
1381 | if (port) { | |
0f7d71a5 | 1382 | ofport_remove(port); |
b33951b8 BP |
1383 | } |
1384 | ofport_remove_with_name(ofproto, name); | |
1385 | ofport_install(ofproto, netdev, &opp); | |
c874dc6d | 1386 | } |
b33951b8 BP |
1387 | } else { |
1388 | /* Any port named 'name' is gone now. */ | |
1389 | ofport_remove_with_name(ofproto, name); | |
c874dc6d | 1390 | } |
abe529af | 1391 | ofproto_port_destroy(&ofproto_port); |
064af421 BP |
1392 | } |
1393 | ||
1394 | static int | |
1395 | init_ports(struct ofproto *p) | |
1396 | { | |
abe529af BP |
1397 | struct ofproto_port_dump dump; |
1398 | struct ofproto_port ofproto_port; | |
1399 | ||
1400 | OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) { | |
1401 | uint16_t ofp_port = ofproto_port.ofp_port; | |
1402 | if (ofproto_get_port(p, ofp_port)) { | |
1403 | VLOG_WARN_RL(&rl, "ignoring duplicate port %"PRIu16" in datapath", | |
1404 | ofp_port); | |
1405 | } else if (shash_find(&p->port_by_name, ofproto_port.name)) { | |
1406 | VLOG_WARN_RL(&rl, "ignoring duplicate device %s in datapath", | |
1407 | ofproto_port.name); | |
1408 | } else { | |
b33951b8 BP |
1409 | struct ofp_phy_port opp; |
1410 | struct netdev *netdev; | |
1411 | ||
abe529af | 1412 | netdev = ofport_open(&ofproto_port, &opp); |
b33951b8 BP |
1413 | if (netdev) { |
1414 | ofport_install(p, netdev, &opp); | |
064af421 BP |
1415 | } |
1416 | } | |
1417 | } | |
b0ec0f27 | 1418 | |
064af421 BP |
1419 | return 0; |
1420 | } | |
9197df76 JP |
1421 | |
1422 | /* Find the minimum MTU of all non-datapath devices attached to 'p'. | |
1423 | * Returns ETH_PAYLOAD_MAX or the minimum of the ports. */ | |
1424 | static int | |
1425 | find_min_mtu(struct ofproto *p) | |
1426 | { | |
1427 | struct ofport *ofport; | |
1428 | int mtu = 0; | |
1429 | ||
1430 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
1431 | struct netdev *netdev = ofport->netdev; | |
1432 | int dev_mtu; | |
1433 | ||
1434 | /* Skip any internal ports, since that's what we're trying to | |
1435 | * set. */ | |
1436 | if (!strcmp(netdev_get_type(netdev), "internal")) { | |
1437 | continue; | |
1438 | } | |
1439 | ||
1440 | if (netdev_get_mtu(netdev, &dev_mtu)) { | |
1441 | continue; | |
1442 | } | |
1443 | if (!mtu || dev_mtu < mtu) { | |
1444 | mtu = dev_mtu; | |
1445 | } | |
1446 | } | |
1447 | ||
1448 | return mtu ? mtu: ETH_PAYLOAD_MAX; | |
1449 | } | |
1450 | ||
1451 | /* Set the MTU of all datapath devices on 'p' to the minimum of the | |
1452 | * non-datapath ports. */ | |
1453 | static void | |
1454 | set_internal_devs_mtu(struct ofproto *p) | |
1455 | { | |
1456 | struct ofport *ofport; | |
1457 | int mtu = find_min_mtu(p); | |
1458 | ||
1459 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
1460 | struct netdev *netdev = ofport->netdev; | |
1461 | ||
1462 | if (!strcmp(netdev_get_type(netdev), "internal")) { | |
1463 | netdev_set_mtu(netdev, mtu); | |
1464 | } | |
1465 | } | |
1466 | } | |
064af421 | 1467 | \f |
064af421 | 1468 | static void |
abe529af | 1469 | ofproto_rule_destroy__(struct rule *rule) |
064af421 BP |
1470 | { |
1471 | free(rule->actions); | |
abe529af | 1472 | rule->ofproto->ofproto_class->rule_dealloc(rule); |
064af421 BP |
1473 | } |
1474 | ||
7ee20df1 BP |
1475 | /* This function allows an ofproto implementation to destroy any rules that |
1476 | * remain when its ->destruct() function is called. The caller must have | |
1477 | * already uninitialized any derived members of 'rule' (step 5 described in the | |
5bee6e26 JP |
1478 | * large comment in ofproto/ofproto-provider.h titled "Life Cycle"). |
1479 | * This function implements steps 6 and 7. | |
7ee20df1 BP |
1480 | * |
1481 | * This function should only be called from an ofproto implementation's | |
1482 | * ->destruct() function. It is not suitable elsewhere. */ | |
abe529af BP |
1483 | void |
1484 | ofproto_rule_destroy(struct rule *rule) | |
064af421 | 1485 | { |
7ee20df1 BP |
1486 | assert(!rule->pending); |
1487 | classifier_remove(&rule->ofproto->tables[rule->table_id], &rule->cr); | |
1488 | ofproto_rule_destroy__(rule); | |
064af421 BP |
1489 | } |
1490 | ||
bcf84111 BP |
1491 | /* Returns true if 'rule' has an OpenFlow OFPAT_OUTPUT or OFPAT_ENQUEUE action |
1492 | * that outputs to 'out_port' (output to OFPP_FLOOD and OFPP_ALL doesn't | |
1493 | * count). */ | |
064af421 | 1494 | static bool |
9ed18e46 | 1495 | rule_has_out_port(const struct rule *rule, uint16_t out_port) |
064af421 BP |
1496 | { |
1497 | const union ofp_action *oa; | |
b4b8c781 | 1498 | size_t left; |
064af421 | 1499 | |
9ed18e46 | 1500 | if (out_port == OFPP_NONE) { |
064af421 BP |
1501 | return true; |
1502 | } | |
b4b8c781 | 1503 | OFPUTIL_ACTION_FOR_EACH_UNSAFE (oa, left, rule->actions, rule->n_actions) { |
9ed18e46 | 1504 | if (action_outputs_to_port(oa, htons(out_port))) { |
064af421 BP |
1505 | return true; |
1506 | } | |
1507 | } | |
1508 | return false; | |
1509 | } | |
1510 | ||
bcf84111 | 1511 | /* Executes the actions indicated by 'rule' on 'packet' and credits 'rule''s |
bcf84111 BP |
1512 | * statistics appropriately. 'packet' must have at least sizeof(struct |
1513 | * ofp_packet_in) bytes of headroom. | |
064af421 | 1514 | * |
bcf84111 BP |
1515 | * 'packet' doesn't necessarily have to match 'rule'. 'rule' will be credited |
1516 | * with statistics for 'packet' either way. | |
1517 | * | |
1518 | * Takes ownership of 'packet'. */ | |
5bf0e941 | 1519 | static int |
abe529af | 1520 | rule_execute(struct rule *rule, uint16_t in_port, struct ofpbuf *packet) |
eedc0097 | 1521 | { |
bcf84111 | 1522 | struct flow flow; |
eedc0097 | 1523 | |
abe529af | 1524 | assert(ofpbuf_headroom(packet) >= sizeof(struct ofp_packet_in)); |
eedc0097 | 1525 | |
abe529af | 1526 | flow_extract(packet, 0, in_port, &flow); |
5bf0e941 | 1527 | return rule->ofproto->ofproto_class->rule_execute(rule, &flow, packet); |
350a665f BP |
1528 | } |
1529 | ||
abe529af BP |
1530 | /* Returns true if 'rule' should be hidden from the controller. |
1531 | * | |
1532 | * Rules with priority higher than UINT16_MAX are set up by ofproto itself | |
1533 | * (e.g. by in-band control) and are intentionally hidden from the | |
1534 | * controller. */ | |
1535 | static bool | |
1536 | rule_is_hidden(const struct rule *rule) | |
b6c9e612 | 1537 | { |
abe529af | 1538 | return rule->cr.priority > UINT16_MAX; |
7b064a79 | 1539 | } |
fa066f01 | 1540 | \f |
064af421 | 1541 | static int |
d1e2cf21 | 1542 | handle_echo_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 1543 | { |
b0421aa2 | 1544 | ofconn_send_reply(ofconn, make_echo_reply(oh)); |
064af421 | 1545 | return 0; |
064af421 BP |
1546 | } |
1547 | ||
064af421 | 1548 | static int |
d1e2cf21 | 1549 | handle_features_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 1550 | { |
64ff1d96 | 1551 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
064af421 BP |
1552 | struct ofp_switch_features *osf; |
1553 | struct ofpbuf *buf; | |
064af421 | 1554 | struct ofport *port; |
6c1491fb BP |
1555 | bool arp_match_ip; |
1556 | uint32_t actions; | |
064af421 | 1557 | |
6c1491fb BP |
1558 | ofproto->ofproto_class->get_features(ofproto, &arp_match_ip, &actions); |
1559 | assert(actions & (1 << OFPAT_OUTPUT)); /* sanity check */ | |
064af421 | 1560 | |
064af421 | 1561 | osf = make_openflow_xid(sizeof *osf, OFPT_FEATURES_REPLY, oh->xid, &buf); |
64ff1d96 | 1562 | osf->datapath_id = htonll(ofproto->datapath_id); |
064af421 | 1563 | osf->n_buffers = htonl(pktbuf_capacity()); |
6c1491fb | 1564 | osf->n_tables = ofproto->n_tables; |
064af421 | 1565 | osf->capabilities = htonl(OFPC_FLOW_STATS | OFPC_TABLE_STATS | |
6c1491fb BP |
1566 | OFPC_PORT_STATS); |
1567 | if (arp_match_ip) { | |
1568 | osf->capabilities |= htonl(OFPC_ARP_MATCH_IP); | |
1569 | } | |
1570 | osf->actions = htonl(actions); | |
064af421 | 1571 | |
64ff1d96 | 1572 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
9cfcdadf | 1573 | ofpbuf_put(buf, &port->opp, sizeof port->opp); |
064af421 | 1574 | } |
064af421 | 1575 | |
b0421aa2 | 1576 | ofconn_send_reply(ofconn, buf); |
064af421 BP |
1577 | return 0; |
1578 | } | |
064af421 | 1579 | |
064af421 | 1580 | static int |
d1e2cf21 | 1581 | handle_get_config_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 1582 | { |
64ff1d96 | 1583 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
064af421 | 1584 | struct ofp_switch_config *osc; |
7257b535 | 1585 | struct ofpbuf *buf; |
959a2ecd | 1586 | |
064af421 BP |
1587 | /* Send reply. */ |
1588 | osc = make_openflow_xid(sizeof *osc, OFPT_GET_CONFIG_REPLY, oh->xid, &buf); | |
7257b535 | 1589 | osc->flags = htons(ofproto->frag_handling); |
810605a2 | 1590 | osc->miss_send_len = htons(ofconn_get_miss_send_len(ofconn)); |
b0421aa2 | 1591 | ofconn_send_reply(ofconn, buf); |
2d70a31a | 1592 | |
064af421 BP |
1593 | return 0; |
1594 | } | |
064af421 | 1595 | |
064af421 | 1596 | static int |
d1e2cf21 | 1597 | handle_set_config(struct ofconn *ofconn, const struct ofp_switch_config *osc) |
064af421 | 1598 | { |
64ff1d96 | 1599 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
d1e2cf21 | 1600 | uint16_t flags = ntohs(osc->flags); |
2d70a31a | 1601 | |
7257b535 BP |
1602 | if (ofconn_get_type(ofconn) != OFCONN_PRIMARY |
1603 | || ofconn_get_role(ofconn) != NX_ROLE_SLAVE) { | |
1604 | enum ofp_config_flags cur = ofproto->frag_handling; | |
1605 | enum ofp_config_flags next = flags & OFPC_FRAG_MASK; | |
1606 | ||
1607 | assert((cur & OFPC_FRAG_MASK) == cur); | |
1608 | if (cur != next) { | |
1609 | if (ofproto->ofproto_class->set_frag_handling(ofproto, next)) { | |
1610 | ofproto->frag_handling = next; | |
1611 | } else { | |
1612 | VLOG_WARN_RL(&rl, "%s: unsupported fragment handling mode %s", | |
1613 | ofproto->name, | |
1614 | ofputil_frag_handling_to_string(next)); | |
1615 | } | |
064af421 BP |
1616 | } |
1617 | } | |
ebe482fd | 1618 | |
810605a2 | 1619 | ofconn_set_miss_send_len(ofconn, ntohs(osc->miss_send_len)); |
0ad9b732 | 1620 | |
064af421 | 1621 | return 0; |
064af421 BP |
1622 | } |
1623 | ||
9deba63b BP |
1624 | /* Checks whether 'ofconn' is a slave controller. If so, returns an OpenFlow |
1625 | * error message code (composed with ofp_mkerr()) for the caller to propagate | |
1626 | * upward. Otherwise, returns 0. | |
1627 | * | |
2228b50d | 1628 | * The log message mentions 'msg_type'. */ |
9deba63b | 1629 | static int |
1102893d | 1630 | reject_slave_controller(struct ofconn *ofconn, const char *msg_type) |
9deba63b | 1631 | { |
1ce0a5fa BP |
1632 | if (ofconn_get_type(ofconn) == OFCONN_PRIMARY |
1633 | && ofconn_get_role(ofconn) == NX_ROLE_SLAVE) { | |
9deba63b | 1634 | static struct vlog_rate_limit perm_rl = VLOG_RATE_LIMIT_INIT(1, 5); |
9deba63b | 1635 | VLOG_WARN_RL(&perm_rl, "rejecting %s message from slave controller", |
2228b50d | 1636 | msg_type); |
9deba63b BP |
1637 | |
1638 | return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_EPERM); | |
1639 | } else { | |
1640 | return 0; | |
1641 | } | |
1642 | } | |
1643 | ||
064af421 | 1644 | static int |
d1e2cf21 | 1645 | handle_packet_out(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 1646 | { |
64ff1d96 | 1647 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
064af421 BP |
1648 | struct ofp_packet_out *opo; |
1649 | struct ofpbuf payload, *buffer; | |
ac51afaf | 1650 | union ofp_action *ofp_actions; |
ac51afaf | 1651 | struct ofpbuf request; |
ae412e7d | 1652 | struct flow flow; |
ac51afaf | 1653 | size_t n_ofp_actions; |
064af421 BP |
1654 | int error; |
1655 | ||
ac51afaf BP |
1656 | COVERAGE_INC(ofproto_packet_out); |
1657 | ||
2228b50d | 1658 | error = reject_slave_controller(ofconn, "OFPT_PACKET_OUT"); |
9deba63b BP |
1659 | if (error) { |
1660 | return error; | |
1661 | } | |
1662 | ||
ac51afaf | 1663 | /* Get ofp_packet_out. */ |
0bc9407d | 1664 | ofpbuf_use_const(&request, oh, ntohs(oh->length)); |
bbc32a88 | 1665 | opo = ofpbuf_pull(&request, offsetof(struct ofp_packet_out, actions)); |
ac51afaf BP |
1666 | |
1667 | /* Get actions. */ | |
1668 | error = ofputil_pull_actions(&request, ntohs(opo->actions_len), | |
1669 | &ofp_actions, &n_ofp_actions); | |
064af421 BP |
1670 | if (error) { |
1671 | return error; | |
1672 | } | |
064af421 | 1673 | |
ac51afaf | 1674 | /* Get payload. */ |
064af421 | 1675 | if (opo->buffer_id != htonl(UINT32_MAX)) { |
10d0a1d2 | 1676 | error = ofconn_pktbuf_retrieve(ofconn, ntohl(opo->buffer_id), |
109b8459 | 1677 | &buffer, NULL); |
7778bd15 | 1678 | if (error || !buffer) { |
064af421 BP |
1679 | return error; |
1680 | } | |
1681 | payload = *buffer; | |
1682 | } else { | |
ac51afaf | 1683 | payload = request; |
064af421 BP |
1684 | buffer = NULL; |
1685 | } | |
1686 | ||
abe529af BP |
1687 | /* Send out packet. */ |
1688 | flow_extract(&payload, 0, ntohs(opo->in_port), &flow); | |
1689 | error = p->ofproto_class->packet_out(p, &payload, &flow, | |
1690 | ofp_actions, n_ofp_actions); | |
ac51afaf | 1691 | ofpbuf_delete(buffer); |
abe529af BP |
1692 | |
1693 | return error; | |
064af421 BP |
1694 | } |
1695 | ||
1696 | static void | |
abe529af | 1697 | update_port_config(struct ofport *port, ovs_be32 config, ovs_be32 mask) |
064af421 | 1698 | { |
abe529af BP |
1699 | ovs_be32 old_config = port->opp.config; |
1700 | ||
064af421 | 1701 | mask &= config ^ port->opp.config; |
118c4676 BP |
1702 | if (mask & htonl(OFPPC_PORT_DOWN)) { |
1703 | if (config & htonl(OFPPC_PORT_DOWN)) { | |
064af421 BP |
1704 | netdev_turn_flags_off(port->netdev, NETDEV_UP, true); |
1705 | } else { | |
1706 | netdev_turn_flags_on(port->netdev, NETDEV_UP, true); | |
1707 | } | |
1708 | } | |
abe529af BP |
1709 | |
1710 | port->opp.config ^= mask & (htonl(OFPPC_NO_RECV | OFPPC_NO_RECV_STP | | |
1711 | OFPPC_NO_FLOOD | OFPPC_NO_FWD | | |
1712 | OFPPC_NO_PACKET_IN)); | |
1713 | if (port->opp.config != old_config) { | |
1714 | port->ofproto->ofproto_class->port_reconfigured(port, old_config); | |
064af421 BP |
1715 | } |
1716 | } | |
1717 | ||
1718 | static int | |
d1e2cf21 | 1719 | handle_port_mod(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 1720 | { |
64ff1d96 | 1721 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
d1e2cf21 | 1722 | const struct ofp_port_mod *opm = (const struct ofp_port_mod *) oh; |
064af421 BP |
1723 | struct ofport *port; |
1724 | int error; | |
1725 | ||
2228b50d | 1726 | error = reject_slave_controller(ofconn, "OFPT_PORT_MOD"); |
9deba63b BP |
1727 | if (error) { |
1728 | return error; | |
1729 | } | |
064af421 | 1730 | |
abe529af | 1731 | port = ofproto_get_port(p, ntohs(opm->port_no)); |
064af421 BP |
1732 | if (!port) { |
1733 | return ofp_mkerr(OFPET_PORT_MOD_FAILED, OFPPMFC_BAD_PORT); | |
1734 | } else if (memcmp(port->opp.hw_addr, opm->hw_addr, OFP_ETH_ALEN)) { | |
1735 | return ofp_mkerr(OFPET_PORT_MOD_FAILED, OFPPMFC_BAD_HW_ADDR); | |
1736 | } else { | |
abe529af | 1737 | update_port_config(port, opm->config, opm->mask); |
064af421 BP |
1738 | if (opm->advertise) { |
1739 | netdev_set_advertisements(port->netdev, ntohl(opm->advertise)); | |
1740 | } | |
1741 | } | |
1742 | return 0; | |
1743 | } | |
1744 | ||
064af421 | 1745 | static int |
3269c562 | 1746 | handle_desc_stats_request(struct ofconn *ofconn, |
63f2140a | 1747 | const struct ofp_stats_msg *request) |
064af421 | 1748 | { |
64ff1d96 | 1749 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
064af421 BP |
1750 | struct ofp_desc_stats *ods; |
1751 | struct ofpbuf *msg; | |
1752 | ||
63f2140a | 1753 | ods = ofputil_make_stats_reply(sizeof *ods, request, &msg); |
5a719c38 JP |
1754 | ovs_strlcpy(ods->mfr_desc, p->mfr_desc, sizeof ods->mfr_desc); |
1755 | ovs_strlcpy(ods->hw_desc, p->hw_desc, sizeof ods->hw_desc); | |
1756 | ovs_strlcpy(ods->sw_desc, p->sw_desc, sizeof ods->sw_desc); | |
1757 | ovs_strlcpy(ods->serial_num, p->serial_desc, sizeof ods->serial_num); | |
1758 | ovs_strlcpy(ods->dp_desc, p->dp_desc, sizeof ods->dp_desc); | |
b0421aa2 | 1759 | ofconn_send_reply(ofconn, msg); |
064af421 BP |
1760 | |
1761 | return 0; | |
1762 | } | |
1763 | ||
064af421 | 1764 | static int |
3269c562 | 1765 | handle_table_stats_request(struct ofconn *ofconn, |
63f2140a | 1766 | const struct ofp_stats_msg *request) |
064af421 | 1767 | { |
64ff1d96 | 1768 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
064af421 BP |
1769 | struct ofp_table_stats *ots; |
1770 | struct ofpbuf *msg; | |
6c1491fb | 1771 | size_t i; |
064af421 | 1772 | |
63f2140a | 1773 | ofputil_make_stats_reply(sizeof(struct ofp_stats_msg), request, &msg); |
064af421 | 1774 | |
6c1491fb BP |
1775 | ots = ofpbuf_put_zeros(msg, sizeof *ots * p->n_tables); |
1776 | for (i = 0; i < p->n_tables; i++) { | |
1777 | ots[i].table_id = i; | |
35aa7a21 | 1778 | sprintf(ots[i].name, "table%zu", i); |
00794817 | 1779 | ots[i].wildcards = htonl(OFPFW_ALL); |
6c1491fb BP |
1780 | ots[i].max_entries = htonl(1000000); /* An arbitrary big number. */ |
1781 | ots[i].active_count = htonl(classifier_count(&p->tables[i])); | |
1782 | } | |
064af421 | 1783 | |
6c1491fb | 1784 | p->ofproto_class->get_tables(p, ots); |
064af421 | 1785 | |
b0421aa2 | 1786 | ofconn_send_reply(ofconn, msg); |
064af421 BP |
1787 | return 0; |
1788 | } | |
1789 | ||
abaad8cf | 1790 | static void |
63f2140a | 1791 | append_port_stat(struct ofport *port, struct list *replies) |
abaad8cf JP |
1792 | { |
1793 | struct netdev_stats stats; | |
1794 | struct ofp_port_stats *ops; | |
1795 | ||
d295e8e9 JP |
1796 | /* Intentionally ignore return value, since errors will set |
1797 | * 'stats' to all-1s, which is correct for OpenFlow, and | |
abaad8cf JP |
1798 | * netdev_get_stats() will log errors. */ |
1799 | netdev_get_stats(port->netdev, &stats); | |
1800 | ||
63f2140a | 1801 | ops = ofputil_append_stats_reply(sizeof *ops, replies); |
118c4676 | 1802 | ops->port_no = port->opp.port_no; |
abaad8cf | 1803 | memset(ops->pad, 0, sizeof ops->pad); |
c4617b3c BP |
1804 | put_32aligned_be64(&ops->rx_packets, htonll(stats.rx_packets)); |
1805 | put_32aligned_be64(&ops->tx_packets, htonll(stats.tx_packets)); | |
1806 | put_32aligned_be64(&ops->rx_bytes, htonll(stats.rx_bytes)); | |
1807 | put_32aligned_be64(&ops->tx_bytes, htonll(stats.tx_bytes)); | |
1808 | put_32aligned_be64(&ops->rx_dropped, htonll(stats.rx_dropped)); | |
1809 | put_32aligned_be64(&ops->tx_dropped, htonll(stats.tx_dropped)); | |
1810 | put_32aligned_be64(&ops->rx_errors, htonll(stats.rx_errors)); | |
1811 | put_32aligned_be64(&ops->tx_errors, htonll(stats.tx_errors)); | |
1812 | put_32aligned_be64(&ops->rx_frame_err, htonll(stats.rx_frame_errors)); | |
1813 | put_32aligned_be64(&ops->rx_over_err, htonll(stats.rx_over_errors)); | |
1814 | put_32aligned_be64(&ops->rx_crc_err, htonll(stats.rx_crc_errors)); | |
1815 | put_32aligned_be64(&ops->collisions, htonll(stats.collisions)); | |
abaad8cf JP |
1816 | } |
1817 | ||
064af421 | 1818 | static int |
63f2140a BP |
1819 | handle_port_stats_request(struct ofconn *ofconn, |
1820 | const struct ofp_port_stats_request *psr) | |
064af421 | 1821 | { |
64ff1d96 | 1822 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
064af421 | 1823 | struct ofport *port; |
63f2140a | 1824 | struct list replies; |
064af421 | 1825 | |
63f2140a | 1826 | ofputil_start_stats_reply(&psr->osm, &replies); |
abaad8cf | 1827 | if (psr->port_no != htons(OFPP_NONE)) { |
abe529af | 1828 | port = ofproto_get_port(p, ntohs(psr->port_no)); |
abaad8cf | 1829 | if (port) { |
63f2140a | 1830 | append_port_stat(port, &replies); |
abaad8cf JP |
1831 | } |
1832 | } else { | |
4e8e4213 | 1833 | HMAP_FOR_EACH (port, hmap_node, &p->ports) { |
63f2140a | 1834 | append_port_stat(port, &replies); |
abaad8cf | 1835 | } |
064af421 BP |
1836 | } |
1837 | ||
63f2140a | 1838 | ofconn_send_replies(ofconn, &replies); |
064af421 BP |
1839 | return 0; |
1840 | } | |
1841 | ||
c6ebb8fb | 1842 | static void |
588cd7b5 | 1843 | calc_flow_duration__(long long int start, uint32_t *sec, uint32_t *nsec) |
c6ebb8fb BP |
1844 | { |
1845 | long long int msecs = time_msec() - start; | |
588cd7b5 BP |
1846 | *sec = msecs / 1000; |
1847 | *nsec = (msecs % 1000) * (1000 * 1000); | |
1848 | } | |
1849 | ||
6c1491fb BP |
1850 | static struct classifier * |
1851 | first_matching_table(struct ofproto *ofproto, uint8_t table_id) | |
064af421 | 1852 | { |
6c1491fb BP |
1853 | if (table_id == 0xff) { |
1854 | return &ofproto->tables[0]; | |
1855 | } else if (table_id < ofproto->n_tables) { | |
1856 | return &ofproto->tables[table_id]; | |
a02e5331 BP |
1857 | } else { |
1858 | /* It would probably be better to reply with an error but there doesn't | |
1859 | * seem to be any appropriate value, so that might just be | |
1860 | * confusing. */ | |
1861 | VLOG_WARN_RL(&rl, "controller asked for invalid table %"PRIu8, | |
1862 | table_id); | |
6c1491fb | 1863 | return NULL; |
a02e5331 | 1864 | } |
064af421 BP |
1865 | } |
1866 | ||
6c1491fb BP |
1867 | static struct classifier * |
1868 | next_matching_table(struct ofproto *ofproto, | |
1869 | struct classifier *cls, uint8_t table_id) | |
1870 | { | |
1871 | return (table_id == 0xff && cls != &ofproto->tables[ofproto->n_tables - 1] | |
1872 | ? cls + 1 | |
1873 | : NULL); | |
1874 | } | |
1875 | ||
1876 | /* Assigns CLS to each classifier table, in turn, that matches TABLE_ID in | |
1877 | * OFPROTO: | |
1878 | * | |
1879 | * - If TABLE_ID is 0xff, this iterates over every classifier table in | |
1880 | * OFPROTO. | |
1881 | * | |
1882 | * - If TABLE_ID is the number of a table in OFPROTO, then the loop iterates | |
1883 | * only once, for that table. | |
1884 | * | |
1885 | * - Otherwise, TABLE_ID isn't valid for OFPROTO, so ofproto logs a warning | |
1886 | * and does not enter the loop at all. | |
1887 | * | |
1888 | * All parameters are evaluated multiple times. | |
1889 | */ | |
1890 | #define FOR_EACH_MATCHING_TABLE(CLS, TABLE_ID, OFPROTO) \ | |
1891 | for ((CLS) = first_matching_table(OFPROTO, TABLE_ID); \ | |
1892 | (CLS) != NULL; \ | |
1893 | (CLS) = next_matching_table(OFPROTO, CLS, TABLE_ID)) | |
1894 | ||
9ed18e46 BP |
1895 | /* Searches 'ofproto' for rules in table 'table_id' (or in all tables, if |
1896 | * 'table_id' is 0xff) that match 'match' in the "loose" way required for | |
1897 | * OpenFlow OFPFC_MODIFY and OFPFC_DELETE requests and puts them on list | |
1898 | * 'rules'. | |
1899 | * | |
1900 | * If 'out_port' is anything other than OFPP_NONE, then only rules that output | |
1901 | * to 'out_port' are included. | |
1902 | * | |
1903 | * Hidden rules are always omitted. | |
1904 | * | |
1905 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
1906 | static int | |
1907 | collect_rules_loose(struct ofproto *ofproto, uint8_t table_id, | |
1908 | const struct cls_rule *match, uint16_t out_port, | |
1909 | struct list *rules) | |
1910 | { | |
1911 | struct classifier *cls; | |
1912 | ||
1913 | list_init(rules); | |
1914 | FOR_EACH_MATCHING_TABLE (cls, table_id, ofproto) { | |
1915 | struct cls_cursor cursor; | |
1916 | struct rule *rule; | |
1917 | ||
1918 | cls_cursor_init(&cursor, cls, match); | |
1919 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { | |
7ee20df1 BP |
1920 | if (rule->pending) { |
1921 | return OFPROTO_POSTPONE; | |
1922 | } | |
9ed18e46 BP |
1923 | if (!rule_is_hidden(rule) && rule_has_out_port(rule, out_port)) { |
1924 | list_push_back(rules, &rule->ofproto_node); | |
1925 | } | |
1926 | } | |
1927 | } | |
1928 | return 0; | |
1929 | } | |
1930 | ||
1931 | /* Searches 'ofproto' for rules in table 'table_id' (or in all tables, if | |
1932 | * 'table_id' is 0xff) that match 'match' in the "strict" way required for | |
1933 | * OpenFlow OFPFC_MODIFY_STRICT and OFPFC_DELETE_STRICT requests and puts them | |
1934 | * on list 'rules'. | |
1935 | * | |
1936 | * If 'out_port' is anything other than OFPP_NONE, then only rules that output | |
1937 | * to 'out_port' are included. | |
1938 | * | |
1939 | * Hidden rules are always omitted. | |
1940 | * | |
1941 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
1942 | static int | |
1943 | collect_rules_strict(struct ofproto *ofproto, uint8_t table_id, | |
1944 | const struct cls_rule *match, uint16_t out_port, | |
1945 | struct list *rules) | |
1946 | { | |
1947 | struct classifier *cls; | |
1948 | ||
1949 | list_init(rules); | |
1950 | FOR_EACH_MATCHING_TABLE (cls, table_id, ofproto) { | |
1951 | struct rule *rule; | |
1952 | ||
1953 | rule = rule_from_cls_rule(classifier_find_rule_exactly(cls, match)); | |
1954 | if (rule) { | |
7ee20df1 BP |
1955 | if (rule->pending) { |
1956 | return OFPROTO_POSTPONE; | |
1957 | } | |
9ed18e46 BP |
1958 | if (!rule_is_hidden(rule) && rule_has_out_port(rule, out_port)) { |
1959 | list_push_back(rules, &rule->ofproto_node); | |
1960 | } | |
1961 | } | |
1962 | } | |
1963 | return 0; | |
1964 | } | |
1965 | ||
064af421 | 1966 | static int |
63f2140a | 1967 | handle_flow_stats_request(struct ofconn *ofconn, |
349adfb2 | 1968 | const struct ofp_stats_msg *osm) |
064af421 | 1969 | { |
64ff1d96 | 1970 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
81d1ea94 | 1971 | struct ofputil_flow_stats_request fsr; |
63f2140a | 1972 | struct list replies; |
9ed18e46 BP |
1973 | struct list rules; |
1974 | struct rule *rule; | |
09246b99 BP |
1975 | int error; |
1976 | ||
349adfb2 | 1977 | error = ofputil_decode_flow_stats_request(&fsr, &osm->header); |
09246b99 BP |
1978 | if (error) { |
1979 | return error; | |
1980 | } | |
1981 | ||
9ed18e46 BP |
1982 | error = collect_rules_loose(ofproto, fsr.table_id, &fsr.match, |
1983 | fsr.out_port, &rules); | |
1984 | if (error) { | |
1985 | return error; | |
1986 | } | |
5ecc9d81 | 1987 | |
9ed18e46 BP |
1988 | ofputil_start_stats_reply(osm, &replies); |
1989 | LIST_FOR_EACH (rule, ofproto_node, &rules) { | |
1990 | struct ofputil_flow_stats fs; | |
1991 | ||
1992 | fs.rule = rule->cr; | |
1993 | fs.cookie = rule->flow_cookie; | |
1994 | fs.table_id = rule->table_id; | |
1995 | calc_flow_duration__(rule->created, &fs.duration_sec, | |
1996 | &fs.duration_nsec); | |
1997 | fs.idle_timeout = rule->idle_timeout; | |
1998 | fs.hard_timeout = rule->hard_timeout; | |
1999 | ofproto->ofproto_class->rule_get_stats(rule, &fs.packet_count, | |
2000 | &fs.byte_count); | |
2001 | fs.actions = rule->actions; | |
2002 | fs.n_actions = rule->n_actions; | |
2003 | ofputil_append_flow_stats_reply(&fs, &replies); | |
3c4486a5 | 2004 | } |
63f2140a | 2005 | ofconn_send_replies(ofconn, &replies); |
5ecc9d81 | 2006 | |
09246b99 BP |
2007 | return 0; |
2008 | } | |
2009 | ||
4f2cad2c | 2010 | static void |
3394b5b6 | 2011 | flow_stats_ds(struct rule *rule, struct ds *results) |
4f2cad2c | 2012 | { |
4f2cad2c | 2013 | uint64_t packet_count, byte_count; |
4f2cad2c | 2014 | |
abe529af BP |
2015 | rule->ofproto->ofproto_class->rule_get_stats(rule, |
2016 | &packet_count, &byte_count); | |
4f2cad2c | 2017 | |
6c1491fb BP |
2018 | if (rule->table_id != 0) { |
2019 | ds_put_format(results, "table_id=%"PRIu8", ", rule->table_id); | |
2020 | } | |
4f2cad2c JP |
2021 | ds_put_format(results, "duration=%llds, ", |
2022 | (time_msec() - rule->created) / 1000); | |
52ae00b3 | 2023 | ds_put_format(results, "priority=%u, ", rule->cr.priority); |
4f2cad2c JP |
2024 | ds_put_format(results, "n_packets=%"PRIu64", ", packet_count); |
2025 | ds_put_format(results, "n_bytes=%"PRIu64", ", byte_count); | |
cb833cf6 | 2026 | cls_rule_format(&rule->cr, results); |
a5df0e72 | 2027 | ds_put_char(results, ','); |
b4b8c781 BP |
2028 | if (rule->n_actions > 0) { |
2029 | ofp_print_actions(results, rule->actions, rule->n_actions); | |
3c8552c1 JP |
2030 | } else { |
2031 | ds_put_cstr(results, "drop"); | |
3dffcf07 | 2032 | } |
4f2cad2c JP |
2033 | ds_put_cstr(results, "\n"); |
2034 | } | |
2035 | ||
d295e8e9 | 2036 | /* Adds a pretty-printed description of all flows to 'results', including |
ee8b231c | 2037 | * hidden flows (e.g., set up by in-band control). */ |
4f2cad2c JP |
2038 | void |
2039 | ofproto_get_all_flows(struct ofproto *p, struct ds *results) | |
2040 | { | |
6c1491fb BP |
2041 | struct classifier *cls; |
2042 | ||
b772ded8 | 2043 | OFPROTO_FOR_EACH_TABLE (cls, p) { |
6c1491fb BP |
2044 | struct cls_cursor cursor; |
2045 | struct rule *rule; | |
064af421 | 2046 | |
6c1491fb BP |
2047 | cls_cursor_init(&cursor, cls, NULL); |
2048 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { | |
2049 | flow_stats_ds(rule, results); | |
2050 | } | |
064af421 | 2051 | } |
064af421 BP |
2052 | } |
2053 | ||
b5827b24 BP |
2054 | /* Obtains the NetFlow engine type and engine ID for 'ofproto' into |
2055 | * '*engine_type' and '*engine_id', respectively. */ | |
2056 | void | |
2057 | ofproto_get_netflow_ids(const struct ofproto *ofproto, | |
2058 | uint8_t *engine_type, uint8_t *engine_id) | |
2059 | { | |
abe529af | 2060 | ofproto->ofproto_class->get_netflow_ids(ofproto, engine_type, engine_id); |
b5827b24 BP |
2061 | } |
2062 | ||
a5610457 EJ |
2063 | /* Checks the fault status of CFM for 'ofp_port' within 'ofproto'. Returns 1 |
2064 | * if CFM is faulted (generally indiciating a connectivity problem), 0 if CFM | |
2065 | * is not faulted, and -1 if CFM is not enabled on 'ofp_port'. */ | |
2066 | int | |
2067 | ofproto_port_get_cfm_fault(const struct ofproto *ofproto, uint16_t ofp_port) | |
2068 | { | |
2069 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
2070 | return (ofport && ofproto->ofproto_class->get_cfm_fault | |
2071 | ? ofproto->ofproto_class->get_cfm_fault(ofport) | |
2072 | : -1); | |
2073 | } | |
2074 | ||
1de11730 EJ |
2075 | /* Gets the MPIDs of the remote maintenance points broadcasting to 'ofp_port' |
2076 | * within 'ofproto'. Populates 'rmps' with an array of MPIDs owned by | |
2077 | * 'ofproto', and 'n_rmps' with the number of MPIDs in 'rmps'. Returns a | |
2078 | * number less than 0 if CFM is not enabled on 'ofp_port'. */ | |
2079 | int | |
2080 | ofproto_port_get_cfm_remote_mpids(const struct ofproto *ofproto, | |
2081 | uint16_t ofp_port, const uint64_t **rmps, | |
2082 | size_t *n_rmps) | |
2083 | { | |
2084 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
2085 | ||
2086 | *rmps = NULL; | |
2087 | *n_rmps = 0; | |
2088 | return (ofport && ofproto->ofproto_class->get_cfm_remote_mpids | |
2089 | ? ofproto->ofproto_class->get_cfm_remote_mpids(ofport, rmps, | |
2090 | n_rmps) | |
2091 | : -1); | |
2092 | } | |
2093 | ||
76c93b22 BP |
2094 | static int |
2095 | handle_aggregate_stats_request(struct ofconn *ofconn, | |
2096 | const struct ofp_stats_msg *osm) | |
27d34fce | 2097 | { |
76c93b22 | 2098 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
81d1ea94 | 2099 | struct ofputil_flow_stats_request request; |
76c93b22 | 2100 | struct ofputil_aggregate_stats stats; |
5e9d0469 | 2101 | bool unknown_packets, unknown_bytes; |
76c93b22 | 2102 | struct ofpbuf *reply; |
9ed18e46 BP |
2103 | struct list rules; |
2104 | struct rule *rule; | |
76c93b22 | 2105 | int error; |
27d34fce | 2106 | |
76c93b22 BP |
2107 | error = ofputil_decode_flow_stats_request(&request, &osm->header); |
2108 | if (error) { | |
2109 | return error; | |
2110 | } | |
5ecc9d81 | 2111 | |
9ed18e46 BP |
2112 | error = collect_rules_loose(ofproto, request.table_id, &request.match, |
2113 | request.out_port, &rules); | |
2114 | if (error) { | |
2115 | return error; | |
2116 | } | |
3c4486a5 | 2117 | |
9ed18e46 | 2118 | memset(&stats, 0, sizeof stats); |
5e9d0469 | 2119 | unknown_packets = unknown_bytes = false; |
9ed18e46 BP |
2120 | LIST_FOR_EACH (rule, ofproto_node, &rules) { |
2121 | uint64_t packet_count; | |
2122 | uint64_t byte_count; | |
5ecc9d81 | 2123 | |
9ed18e46 BP |
2124 | ofproto->ofproto_class->rule_get_stats(rule, &packet_count, |
2125 | &byte_count); | |
5ecc9d81 | 2126 | |
5e9d0469 BP |
2127 | if (packet_count == UINT64_MAX) { |
2128 | unknown_packets = true; | |
2129 | } else { | |
2130 | stats.packet_count += packet_count; | |
2131 | } | |
2132 | ||
2133 | if (byte_count == UINT64_MAX) { | |
2134 | unknown_bytes = true; | |
2135 | } else { | |
2136 | stats.byte_count += byte_count; | |
2137 | } | |
2138 | ||
9ed18e46 | 2139 | stats.flow_count++; |
3c4486a5 | 2140 | } |
5e9d0469 BP |
2141 | if (unknown_packets) { |
2142 | stats.packet_count = UINT64_MAX; | |
2143 | } | |
2144 | if (unknown_bytes) { | |
2145 | stats.byte_count = UINT64_MAX; | |
2146 | } | |
27d34fce | 2147 | |
76c93b22 BP |
2148 | reply = ofputil_encode_aggregate_stats_reply(&stats, osm); |
2149 | ofconn_send_reply(ofconn, reply); | |
09246b99 BP |
2150 | |
2151 | return 0; | |
2152 | } | |
2153 | ||
c1c9c9c4 | 2154 | struct queue_stats_cbdata { |
ca0f572c | 2155 | struct ofport *ofport; |
63f2140a | 2156 | struct list replies; |
c1c9c9c4 BP |
2157 | }; |
2158 | ||
2159 | static void | |
db9220c3 | 2160 | put_queue_stats(struct queue_stats_cbdata *cbdata, uint32_t queue_id, |
c1c9c9c4 BP |
2161 | const struct netdev_queue_stats *stats) |
2162 | { | |
2163 | struct ofp_queue_stats *reply; | |
2164 | ||
63f2140a | 2165 | reply = ofputil_append_stats_reply(sizeof *reply, &cbdata->replies); |
118c4676 | 2166 | reply->port_no = cbdata->ofport->opp.port_no; |
c1c9c9c4 BP |
2167 | memset(reply->pad, 0, sizeof reply->pad); |
2168 | reply->queue_id = htonl(queue_id); | |
c4617b3c BP |
2169 | put_32aligned_be64(&reply->tx_bytes, htonll(stats->tx_bytes)); |
2170 | put_32aligned_be64(&reply->tx_packets, htonll(stats->tx_packets)); | |
2171 | put_32aligned_be64(&reply->tx_errors, htonll(stats->tx_errors)); | |
c1c9c9c4 BP |
2172 | } |
2173 | ||
2174 | static void | |
db9220c3 | 2175 | handle_queue_stats_dump_cb(uint32_t queue_id, |
c1c9c9c4 BP |
2176 | struct netdev_queue_stats *stats, |
2177 | void *cbdata_) | |
2178 | { | |
2179 | struct queue_stats_cbdata *cbdata = cbdata_; | |
2180 | ||
2181 | put_queue_stats(cbdata, queue_id, stats); | |
2182 | } | |
2183 | ||
2184 | static void | |
ca0f572c | 2185 | handle_queue_stats_for_port(struct ofport *port, uint32_t queue_id, |
c1c9c9c4 BP |
2186 | struct queue_stats_cbdata *cbdata) |
2187 | { | |
ca0f572c | 2188 | cbdata->ofport = port; |
c1c9c9c4 BP |
2189 | if (queue_id == OFPQ_ALL) { |
2190 | netdev_dump_queue_stats(port->netdev, | |
2191 | handle_queue_stats_dump_cb, cbdata); | |
2192 | } else { | |
2193 | struct netdev_queue_stats stats; | |
2194 | ||
1ac788f6 BP |
2195 | if (!netdev_get_queue_stats(port->netdev, queue_id, &stats)) { |
2196 | put_queue_stats(cbdata, queue_id, &stats); | |
2197 | } | |
c1c9c9c4 BP |
2198 | } |
2199 | } | |
2200 | ||
2201 | static int | |
63f2140a BP |
2202 | handle_queue_stats_request(struct ofconn *ofconn, |
2203 | const struct ofp_queue_stats_request *qsr) | |
c1c9c9c4 | 2204 | { |
64ff1d96 | 2205 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
c1c9c9c4 BP |
2206 | struct queue_stats_cbdata cbdata; |
2207 | struct ofport *port; | |
2208 | unsigned int port_no; | |
2209 | uint32_t queue_id; | |
2210 | ||
c1c9c9c4 BP |
2211 | COVERAGE_INC(ofproto_queue_req); |
2212 | ||
63f2140a | 2213 | ofputil_start_stats_reply(&qsr->osm, &cbdata.replies); |
c1c9c9c4 BP |
2214 | |
2215 | port_no = ntohs(qsr->port_no); | |
2216 | queue_id = ntohl(qsr->queue_id); | |
2217 | if (port_no == OFPP_ALL) { | |
4e8e4213 | 2218 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
ca0f572c | 2219 | handle_queue_stats_for_port(port, queue_id, &cbdata); |
c1c9c9c4 | 2220 | } |
abe529af BP |
2221 | } else if (port_no < OFPP_MAX) { |
2222 | port = ofproto_get_port(ofproto, port_no); | |
c1c9c9c4 | 2223 | if (port) { |
ca0f572c | 2224 | handle_queue_stats_for_port(port, queue_id, &cbdata); |
c1c9c9c4 BP |
2225 | } |
2226 | } else { | |
63f2140a | 2227 | ofpbuf_list_delete(&cbdata.replies); |
c1c9c9c4 BP |
2228 | return ofp_mkerr(OFPET_QUEUE_OP_FAILED, OFPQOFC_BAD_PORT); |
2229 | } | |
63f2140a | 2230 | ofconn_send_replies(ofconn, &cbdata.replies); |
c1c9c9c4 BP |
2231 | |
2232 | return 0; | |
2233 | } | |
7ee20df1 BP |
2234 | |
2235 | static bool | |
2236 | is_flow_deletion_pending(const struct ofproto *ofproto, | |
2237 | const struct cls_rule *cls_rule, | |
2238 | uint8_t table_id) | |
2239 | { | |
2240 | if (!hmap_is_empty(&ofproto->deletions)) { | |
2241 | struct ofoperation *op; | |
2242 | ||
2243 | HMAP_FOR_EACH_WITH_HASH (op, hmap_node, | |
2244 | cls_rule_hash(cls_rule, table_id), | |
2245 | &ofproto->deletions) { | |
2246 | if (cls_rule_equal(cls_rule, &op->rule->cr)) { | |
2247 | return true; | |
2248 | } | |
2249 | } | |
2250 | } | |
2251 | ||
2252 | return false; | |
2253 | } | |
2254 | ||
79eee1eb BP |
2255 | /* Implements OFPFC_ADD and the cases for OFPFC_MODIFY and OFPFC_MODIFY_STRICT |
2256 | * in which no matching flow already exists in the flow table. | |
2257 | * | |
2258 | * Adds the flow specified by 'ofm', which is followed by 'n_actions' | |
75a75043 BP |
2259 | * ofp_actions, to the ofproto's flow table. Returns 0 on success, an OpenFlow |
2260 | * error code as encoded by ofp_mkerr() on failure, or OFPROTO_POSTPONE if the | |
2261 | * operation cannot be initiated now but may be retried later. | |
79eee1eb BP |
2262 | * |
2263 | * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id, | |
2264 | * if any. */ | |
064af421 | 2265 | static int |
a9a2da38 | 2266 | add_flow(struct ofproto *ofproto, struct ofconn *ofconn, |
1b9d6420 | 2267 | const struct ofputil_flow_mod *fm, const struct ofp_header *request) |
064af421 | 2268 | { |
7ee20df1 BP |
2269 | struct classifier *table; |
2270 | struct ofopgroup *group; | |
2271 | struct rule *victim; | |
064af421 | 2272 | struct rule *rule; |
064af421 BP |
2273 | int error; |
2274 | ||
7ee20df1 | 2275 | /* Check for overlap, if requested. */ |
6c1491fb BP |
2276 | if (fm->flags & OFPFF_CHECK_OVERLAP) { |
2277 | struct classifier *cls; | |
2278 | ||
7ee20df1 | 2279 | FOR_EACH_MATCHING_TABLE (cls, fm->table_id, ofproto) { |
6c1491fb BP |
2280 | if (classifier_rule_overlaps(cls, &fm->cr)) { |
2281 | return ofp_mkerr(OFPET_FLOW_MOD_FAILED, OFPFMFC_OVERLAP); | |
2282 | } | |
2283 | } | |
49bdc010 JP |
2284 | } |
2285 | ||
7ee20df1 BP |
2286 | /* Pick table. */ |
2287 | if (fm->table_id == 0xff) { | |
2288 | uint8_t table_id; | |
13521ff5 | 2289 | if (ofproto->ofproto_class->rule_choose_table) { |
7ee20df1 BP |
2290 | error = ofproto->ofproto_class->rule_choose_table(ofproto, &fm->cr, |
2291 | &table_id); | |
2292 | if (error) { | |
2293 | return error; | |
2294 | } | |
2295 | assert(table_id < ofproto->n_tables); | |
2296 | table = &ofproto->tables[table_id]; | |
2297 | } else { | |
2298 | table = &ofproto->tables[0]; | |
2299 | } | |
2300 | } else if (fm->table_id < ofproto->n_tables) { | |
2301 | table = &ofproto->tables[fm->table_id]; | |
2302 | } else { | |
2303 | return ofp_mkerr_nicira(OFPET_FLOW_MOD_FAILED, NXFMFC_BAD_TABLE_ID); | |
064af421 BP |
2304 | } |
2305 | ||
7ee20df1 BP |
2306 | /* Serialize against pending deletion. */ |
2307 | if (is_flow_deletion_pending(ofproto, &fm->cr, table - ofproto->tables)) { | |
2308 | return OFPROTO_POSTPONE; | |
afe75089 | 2309 | } |
064af421 | 2310 | |
7ee20df1 BP |
2311 | /* Allocate new rule. */ |
2312 | rule = ofproto->ofproto_class->rule_alloc(); | |
2313 | if (!rule) { | |
2314 | VLOG_WARN_RL(&rl, "%s: failed to create rule (%s)", | |
2315 | ofproto->name, strerror(error)); | |
2316 | return ENOMEM; | |
2317 | } | |
2318 | rule->ofproto = ofproto; | |
2319 | rule->cr = fm->cr; | |
2320 | rule->pending = NULL; | |
2321 | rule->flow_cookie = fm->cookie; | |
308881af | 2322 | rule->created = rule->modified = time_msec(); |
7ee20df1 BP |
2323 | rule->idle_timeout = fm->idle_timeout; |
2324 | rule->hard_timeout = fm->hard_timeout; | |
2325 | rule->table_id = table - ofproto->tables; | |
2326 | rule->send_flow_removed = (fm->flags & OFPFF_SEND_FLOW_REM) != 0; | |
2327 | rule->actions = ofputil_actions_clone(fm->actions, fm->n_actions); | |
2328 | rule->n_actions = fm->n_actions; | |
2329 | ||
2330 | /* Insert new rule. */ | |
2331 | victim = rule_from_cls_rule(classifier_replace(table, &rule->cr)); | |
2332 | if (victim && victim->pending) { | |
2333 | error = OFPROTO_POSTPONE; | |
2334 | } else { | |
7024dffe | 2335 | group = ofopgroup_create(ofproto, ofconn, request, fm->buffer_id); |
7ee20df1 BP |
2336 | ofoperation_create(group, rule, OFOPERATION_ADD); |
2337 | rule->pending->victim = victim; | |
2338 | ||
2339 | error = ofproto->ofproto_class->rule_construct(rule); | |
2340 | if (error) { | |
2341 | ofoperation_destroy(rule->pending); | |
2342 | } | |
2343 | ofopgroup_submit(group); | |
064af421 | 2344 | } |
79eee1eb | 2345 | |
7ee20df1 | 2346 | /* Back out if an error occurred. */ |
79eee1eb | 2347 | if (error) { |
7ee20df1 BP |
2348 | if (victim) { |
2349 | classifier_replace(table, &victim->cr); | |
2350 | } else { | |
2351 | classifier_remove(table, &rule->cr); | |
2352 | } | |
2353 | ofproto_rule_destroy__(rule); | |
79eee1eb | 2354 | } |
7ee20df1 | 2355 | return error; |
064af421 | 2356 | } |
79eee1eb BP |
2357 | \f |
2358 | /* OFPFC_MODIFY and OFPFC_MODIFY_STRICT. */ | |
064af421 | 2359 | |
9ed18e46 BP |
2360 | /* Modifies the rules listed in 'rules', changing their actions to match those |
2361 | * in 'fm'. | |
79eee1eb | 2362 | * |
9ed18e46 BP |
2363 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, |
2364 | * if any. | |
2365 | * | |
2366 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
79eee1eb | 2367 | static int |
7024dffe BP |
2368 | modify_flows__(struct ofproto *ofproto, struct ofconn *ofconn, |
2369 | const struct ofputil_flow_mod *fm, | |
7ee20df1 | 2370 | const struct ofp_header *request, struct list *rules) |
79eee1eb | 2371 | { |
7ee20df1 | 2372 | struct ofopgroup *group; |
9ed18e46 | 2373 | struct rule *rule; |
79eee1eb | 2374 | |
7024dffe | 2375 | group = ofopgroup_create(ofproto, ofconn, request, fm->buffer_id); |
9ed18e46 BP |
2376 | LIST_FOR_EACH (rule, ofproto_node, rules) { |
2377 | if (!ofputil_actions_equal(fm->actions, fm->n_actions, | |
2378 | rule->actions, rule->n_actions)) { | |
7ee20df1 BP |
2379 | ofoperation_create(group, rule, OFOPERATION_MODIFY); |
2380 | rule->pending->actions = rule->actions; | |
2381 | rule->pending->n_actions = rule->n_actions; | |
2382 | rule->actions = ofputil_actions_clone(fm->actions, fm->n_actions); | |
2383 | rule->n_actions = fm->n_actions; | |
2384 | rule->ofproto->ofproto_class->rule_modify_actions(rule); | |
308881af BP |
2385 | } else { |
2386 | rule->modified = time_msec(); | |
5ecc9d81 | 2387 | } |
9ed18e46 | 2388 | rule->flow_cookie = fm->cookie; |
5ecc9d81 | 2389 | } |
7ee20df1 | 2390 | ofopgroup_submit(group); |
79eee1eb | 2391 | |
7ee20df1 | 2392 | return 0; |
9ed18e46 BP |
2393 | } |
2394 | ||
2395 | /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code as | |
2396 | * encoded by ofp_mkerr() on failure. | |
2397 | * | |
2398 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, | |
2399 | * if any. */ | |
2400 | static int | |
7024dffe | 2401 | modify_flows_loose(struct ofproto *ofproto, struct ofconn *ofconn, |
1b9d6420 | 2402 | const struct ofputil_flow_mod *fm, |
7ee20df1 | 2403 | const struct ofp_header *request) |
9ed18e46 | 2404 | { |
9ed18e46 BP |
2405 | struct list rules; |
2406 | int error; | |
2407 | ||
7024dffe BP |
2408 | error = collect_rules_loose(ofproto, fm->table_id, &fm->cr, OFPP_NONE, |
2409 | &rules); | |
9ed18e46 | 2410 | return (error ? error |
7024dffe BP |
2411 | : list_is_empty(&rules) ? add_flow(ofproto, ofconn, fm, request) |
2412 | : modify_flows__(ofproto, ofconn, fm, request, &rules)); | |
79eee1eb BP |
2413 | } |
2414 | ||
2415 | /* Implements OFPFC_MODIFY_STRICT. Returns 0 on success or an OpenFlow error | |
2416 | * code as encoded by ofp_mkerr() on failure. | |
2417 | * | |
9ed18e46 | 2418 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, |
79eee1eb BP |
2419 | * if any. */ |
2420 | static int | |
7024dffe | 2421 | modify_flow_strict(struct ofproto *ofproto, struct ofconn *ofconn, |
1b9d6420 | 2422 | const struct ofputil_flow_mod *fm, |
7ee20df1 | 2423 | const struct ofp_header *request) |
79eee1eb | 2424 | { |
9ed18e46 | 2425 | struct list rules; |
6c1491fb BP |
2426 | int error; |
2427 | ||
7024dffe BP |
2428 | error = collect_rules_strict(ofproto, fm->table_id, &fm->cr, OFPP_NONE, |
2429 | &rules); | |
9ed18e46 | 2430 | return (error ? error |
7024dffe BP |
2431 | : list_is_empty(&rules) ? add_flow(ofproto, ofconn, fm, request) |
2432 | : list_is_singleton(&rules) ? modify_flows__(ofproto, ofconn, | |
2433 | fm, request, &rules) | |
9ed18e46 | 2434 | : 0); |
79eee1eb | 2435 | } |
9ed18e46 BP |
2436 | \f |
2437 | /* OFPFC_DELETE implementation. */ | |
79eee1eb | 2438 | |
9ed18e46 BP |
2439 | /* Deletes the rules listed in 'rules'. |
2440 | * | |
2441 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
064af421 | 2442 | static int |
7024dffe BP |
2443 | delete_flows__(struct ofproto *ofproto, struct ofconn *ofconn, |
2444 | const struct ofp_header *request, struct list *rules) | |
064af421 | 2445 | { |
9ed18e46 | 2446 | struct rule *rule, *next; |
7ee20df1 | 2447 | struct ofopgroup *group; |
79eee1eb | 2448 | |
7024dffe | 2449 | group = ofopgroup_create(ofproto, ofconn, request, UINT32_MAX); |
9ed18e46 BP |
2450 | LIST_FOR_EACH_SAFE (rule, next, ofproto_node, rules) { |
2451 | ofproto_rule_send_removed(rule, OFPRR_DELETE); | |
7ee20df1 BP |
2452 | |
2453 | ofoperation_create(group, rule, OFOPERATION_DELETE); | |
2454 | classifier_remove(&ofproto->tables[rule->table_id], &rule->cr); | |
2455 | rule->ofproto->ofproto_class->rule_destruct(rule); | |
79eee1eb | 2456 | } |
7ee20df1 | 2457 | ofopgroup_submit(group); |
79eee1eb | 2458 | |
9ed18e46 | 2459 | return 0; |
79eee1eb | 2460 | } |
79eee1eb BP |
2461 | |
2462 | /* Implements OFPFC_DELETE. */ | |
9ed18e46 | 2463 | static int |
7024dffe BP |
2464 | delete_flows_loose(struct ofproto *ofproto, struct ofconn *ofconn, |
2465 | const struct ofputil_flow_mod *fm, | |
7ee20df1 | 2466 | const struct ofp_header *request) |
79eee1eb | 2467 | { |
9ed18e46 BP |
2468 | struct list rules; |
2469 | int error; | |
064af421 | 2470 | |
7024dffe | 2471 | error = collect_rules_loose(ofproto, fm->table_id, &fm->cr, fm->out_port, |
9ed18e46 BP |
2472 | &rules); |
2473 | return (error ? error | |
7024dffe BP |
2474 | : !list_is_empty(&rules) ? delete_flows__(ofproto, ofconn, request, |
2475 | &rules) | |
9ed18e46 | 2476 | : 0); |
064af421 BP |
2477 | } |
2478 | ||
79eee1eb | 2479 | /* Implements OFPFC_DELETE_STRICT. */ |
9ed18e46 | 2480 | static int |
7024dffe | 2481 | delete_flow_strict(struct ofproto *ofproto, struct ofconn *ofconn, |
1b9d6420 | 2482 | const struct ofputil_flow_mod *fm, |
7ee20df1 | 2483 | const struct ofp_header *request) |
79eee1eb | 2484 | { |
9ed18e46 BP |
2485 | struct list rules; |
2486 | int error; | |
79eee1eb | 2487 | |
7024dffe | 2488 | error = collect_rules_strict(ofproto, fm->table_id, &fm->cr, fm->out_port, |
9ed18e46 BP |
2489 | &rules); |
2490 | return (error ? error | |
7024dffe BP |
2491 | : list_is_singleton(&rules) ? delete_flows__(ofproto, ofconn, |
2492 | request, &rules) | |
9ed18e46 | 2493 | : 0); |
abe529af BP |
2494 | } |
2495 | ||
2496 | static void | |
2497 | ofproto_rule_send_removed(struct rule *rule, uint8_t reason) | |
2498 | { | |
2499 | struct ofputil_flow_removed fr; | |
2500 | ||
2501 | if (rule_is_hidden(rule) || !rule->send_flow_removed) { | |
2502 | return; | |
2503 | } | |
2504 | ||
2505 | fr.rule = rule->cr; | |
2506 | fr.cookie = rule->flow_cookie; | |
2507 | fr.reason = reason; | |
2508 | calc_flow_duration__(rule->created, &fr.duration_sec, &fr.duration_nsec); | |
2509 | fr.idle_timeout = rule->idle_timeout; | |
2510 | rule->ofproto->ofproto_class->rule_get_stats(rule, &fr.packet_count, | |
2511 | &fr.byte_count); | |
2512 | ||
2513 | connmgr_send_flow_removed(rule->ofproto->connmgr, &fr); | |
2514 | } | |
2515 | ||
2516 | /* Sends an OpenFlow "flow removed" message with the given 'reason' (either | |
2517 | * OFPRR_HARD_TIMEOUT or OFPRR_IDLE_TIMEOUT), and then removes 'rule' from its | |
2518 | * ofproto. | |
2519 | * | |
2520 | * ofproto implementation ->run() functions should use this function to expire | |
2521 | * OpenFlow flows. */ | |
2522 | void | |
2523 | ofproto_rule_expire(struct rule *rule, uint8_t reason) | |
2524 | { | |
7ee20df1 BP |
2525 | struct ofproto *ofproto = rule->ofproto; |
2526 | struct ofopgroup *group; | |
2527 | ||
abe529af | 2528 | assert(reason == OFPRR_HARD_TIMEOUT || reason == OFPRR_IDLE_TIMEOUT); |
7ee20df1 | 2529 | |
abe529af | 2530 | ofproto_rule_send_removed(rule, reason); |
7ee20df1 | 2531 | |
7024dffe | 2532 | group = ofopgroup_create_unattached(ofproto); |
7ee20df1 BP |
2533 | ofoperation_create(group, rule, OFOPERATION_DELETE); |
2534 | classifier_remove(&ofproto->tables[rule->table_id], &rule->cr); | |
2535 | rule->ofproto->ofproto_class->rule_destruct(rule); | |
2536 | ofopgroup_submit(group); | |
79eee1eb BP |
2537 | } |
2538 | \f | |
064af421 | 2539 | static int |
2e4f5fcf | 2540 | handle_flow_mod(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2541 | { |
a9a2da38 | 2542 | struct ofputil_flow_mod fm; |
064af421 BP |
2543 | int error; |
2544 | ||
3052b0c5 | 2545 | error = reject_slave_controller(ofconn, "flow_mod"); |
9deba63b BP |
2546 | if (error) { |
2547 | return error; | |
2548 | } | |
3052b0c5 | 2549 | |
00794817 | 2550 | error = ofputil_decode_flow_mod(&fm, oh, |
6c1491fb | 2551 | ofconn_get_flow_mod_table_id(ofconn)); |
064af421 BP |
2552 | if (error) { |
2553 | return error; | |
2554 | } | |
2555 | ||
2e4f5fcf BP |
2556 | /* We do not support the emergency flow cache. It will hopefully get |
2557 | * dropped from OpenFlow in the near future. */ | |
2558 | if (fm.flags & OFPFF_EMERG) { | |
49bdc010 JP |
2559 | /* There isn't a good fit for an error code, so just state that the |
2560 | * flow table is full. */ | |
2561 | return ofp_mkerr(OFPET_FLOW_MOD_FAILED, OFPFMFC_ALL_TABLES_FULL); | |
2562 | } | |
2563 | ||
75a75043 BP |
2564 | return handle_flow_mod__(ofconn_get_ofproto(ofconn), ofconn, &fm, oh); |
2565 | } | |
2566 | ||
2567 | static int | |
2568 | handle_flow_mod__(struct ofproto *ofproto, struct ofconn *ofconn, | |
2569 | const struct ofputil_flow_mod *fm, | |
2570 | const struct ofp_header *oh) | |
2571 | { | |
2572 | if (ofproto->n_pending >= 50) { | |
2573 | assert(!list_is_empty(&ofproto->pending)); | |
2574 | return OFPROTO_POSTPONE; | |
2575 | } | |
2576 | ||
2577 | switch (fm->command) { | |
3052b0c5 | 2578 | case OFPFC_ADD: |
75a75043 | 2579 | return add_flow(ofproto, ofconn, fm, oh); |
3052b0c5 BP |
2580 | |
2581 | case OFPFC_MODIFY: | |
75a75043 | 2582 | return modify_flows_loose(ofproto, ofconn, fm, oh); |
3052b0c5 BP |
2583 | |
2584 | case OFPFC_MODIFY_STRICT: | |
75a75043 | 2585 | return modify_flow_strict(ofproto, ofconn, fm, oh); |
3052b0c5 BP |
2586 | |
2587 | case OFPFC_DELETE: | |
75a75043 | 2588 | return delete_flows_loose(ofproto, ofconn, fm, oh); |
3052b0c5 BP |
2589 | |
2590 | case OFPFC_DELETE_STRICT: | |
75a75043 | 2591 | return delete_flow_strict(ofproto, ofconn, fm, oh); |
3052b0c5 BP |
2592 | |
2593 | default: | |
75a75043 | 2594 | if (fm->command > 0xff) { |
6c1491fb BP |
2595 | VLOG_WARN_RL(&rl, "flow_mod has explicit table_id but " |
2596 | "flow_mod_table_id extension is not enabled"); | |
2597 | } | |
3052b0c5 BP |
2598 | return ofp_mkerr(OFPET_FLOW_MOD_FAILED, OFPFMFC_BAD_COMMAND); |
2599 | } | |
2600 | } | |
2601 | ||
9deba63b | 2602 | static int |
d1e2cf21 | 2603 | handle_role_request(struct ofconn *ofconn, const struct ofp_header *oh) |
9deba63b | 2604 | { |
d1e2cf21 | 2605 | struct nx_role_request *nrr = (struct nx_role_request *) oh; |
9deba63b BP |
2606 | struct nx_role_request *reply; |
2607 | struct ofpbuf *buf; | |
2608 | uint32_t role; | |
2609 | ||
1ce0a5fa | 2610 | if (ofconn_get_type(ofconn) != OFCONN_PRIMARY) { |
19a87e36 | 2611 | VLOG_WARN_RL(&rl, "ignoring role request on service connection"); |
9deba63b BP |
2612 | return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_EPERM); |
2613 | } | |
2614 | ||
2615 | role = ntohl(nrr->role); | |
2616 | if (role != NX_ROLE_OTHER && role != NX_ROLE_MASTER | |
2617 | && role != NX_ROLE_SLAVE) { | |
2618 | VLOG_WARN_RL(&rl, "received request for unknown role %"PRIu32, role); | |
2619 | ||
2620 | /* There's no good error code for this. */ | |
2621 | return ofp_mkerr(OFPET_BAD_REQUEST, -1); | |
2622 | } | |
2623 | ||
7ee20df1 BP |
2624 | if (ofconn_get_role(ofconn) != role |
2625 | && ofconn_has_pending_opgroups(ofconn)) { | |
2626 | return OFPROTO_POSTPONE; | |
2627 | } | |
2628 | ||
1ce0a5fa | 2629 | ofconn_set_role(ofconn, role); |
9deba63b | 2630 | |
d1e2cf21 | 2631 | reply = make_nxmsg_xid(sizeof *reply, NXT_ROLE_REPLY, oh->xid, &buf); |
9deba63b | 2632 | reply->role = htonl(role); |
b0421aa2 | 2633 | ofconn_send_reply(ofconn, buf); |
9deba63b BP |
2634 | |
2635 | return 0; | |
2636 | } | |
2637 | ||
6c1491fb BP |
2638 | static int |
2639 | handle_nxt_flow_mod_table_id(struct ofconn *ofconn, | |
2640 | const struct ofp_header *oh) | |
2641 | { | |
2642 | const struct nxt_flow_mod_table_id *msg | |
2643 | = (const struct nxt_flow_mod_table_id *) oh; | |
2644 | ||
2645 | ofconn_set_flow_mod_table_id(ofconn, msg->set != 0); | |
2646 | return 0; | |
2647 | } | |
2648 | ||
09246b99 | 2649 | static int |
d1e2cf21 | 2650 | handle_nxt_set_flow_format(struct ofconn *ofconn, const struct ofp_header *oh) |
09246b99 | 2651 | { |
d1e2cf21 BP |
2652 | const struct nxt_set_flow_format *msg |
2653 | = (const struct nxt_set_flow_format *) oh; | |
09246b99 | 2654 | uint32_t format; |
09246b99 BP |
2655 | |
2656 | format = ntohl(msg->format); | |
7ee20df1 | 2657 | if (format != NXFF_OPENFLOW10 && format != NXFF_NXM) { |
09246b99 BP |
2658 | return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_EPERM); |
2659 | } | |
7ee20df1 BP |
2660 | |
2661 | if (format != ofconn_get_flow_format(ofconn) | |
2662 | && ofconn_has_pending_opgroups(ofconn)) { | |
2663 | /* Avoid sending async messages in surprising flow format. */ | |
2664 | return OFPROTO_POSTPONE; | |
2665 | } | |
2666 | ||
2667 | ofconn_set_flow_format(ofconn, format); | |
2668 | return 0; | |
09246b99 BP |
2669 | } |
2670 | ||
064af421 | 2671 | static int |
d1e2cf21 | 2672 | handle_barrier_request(struct ofconn *ofconn, const struct ofp_header *oh) |
246e61ea JP |
2673 | { |
2674 | struct ofp_header *ob; | |
2675 | struct ofpbuf *buf; | |
2676 | ||
7ee20df1 BP |
2677 | if (ofconn_has_pending_opgroups(ofconn)) { |
2678 | return OFPROTO_POSTPONE; | |
2679 | } | |
2680 | ||
246e61ea | 2681 | ob = make_openflow_xid(sizeof *ob, OFPT_BARRIER_REPLY, oh->xid, &buf); |
b0421aa2 | 2682 | ofconn_send_reply(ofconn, buf); |
246e61ea JP |
2683 | return 0; |
2684 | } | |
2685 | ||
d1e2cf21 BP |
2686 | static int |
2687 | handle_openflow__(struct ofconn *ofconn, const struct ofpbuf *msg) | |
064af421 | 2688 | { |
d1e2cf21 BP |
2689 | const struct ofp_header *oh = msg->data; |
2690 | const struct ofputil_msg_type *type; | |
064af421 BP |
2691 | int error; |
2692 | ||
d1e2cf21 BP |
2693 | error = ofputil_decode_msg_type(oh, &type); |
2694 | if (error) { | |
2695 | return error; | |
2696 | } | |
064af421 | 2697 | |
d1e2cf21 BP |
2698 | switch (ofputil_msg_type_code(type)) { |
2699 | /* OpenFlow requests. */ | |
2700 | case OFPUTIL_OFPT_ECHO_REQUEST: | |
2701 | return handle_echo_request(ofconn, oh); | |
064af421 | 2702 | |
d1e2cf21 BP |
2703 | case OFPUTIL_OFPT_FEATURES_REQUEST: |
2704 | return handle_features_request(ofconn, oh); | |
064af421 | 2705 | |
d1e2cf21 BP |
2706 | case OFPUTIL_OFPT_GET_CONFIG_REQUEST: |
2707 | return handle_get_config_request(ofconn, oh); | |
064af421 | 2708 | |
d1e2cf21 BP |
2709 | case OFPUTIL_OFPT_SET_CONFIG: |
2710 | return handle_set_config(ofconn, msg->data); | |
064af421 | 2711 | |
d1e2cf21 BP |
2712 | case OFPUTIL_OFPT_PACKET_OUT: |
2713 | return handle_packet_out(ofconn, oh); | |
064af421 | 2714 | |
d1e2cf21 BP |
2715 | case OFPUTIL_OFPT_PORT_MOD: |
2716 | return handle_port_mod(ofconn, oh); | |
064af421 | 2717 | |
d1e2cf21 | 2718 | case OFPUTIL_OFPT_FLOW_MOD: |
2e4f5fcf | 2719 | return handle_flow_mod(ofconn, oh); |
064af421 | 2720 | |
d1e2cf21 BP |
2721 | case OFPUTIL_OFPT_BARRIER_REQUEST: |
2722 | return handle_barrier_request(ofconn, oh); | |
064af421 | 2723 | |
d1e2cf21 BP |
2724 | /* OpenFlow replies. */ |
2725 | case OFPUTIL_OFPT_ECHO_REPLY: | |
2726 | return 0; | |
246e61ea | 2727 | |
d1e2cf21 | 2728 | /* Nicira extension requests. */ |
d1e2cf21 BP |
2729 | case OFPUTIL_NXT_ROLE_REQUEST: |
2730 | return handle_role_request(ofconn, oh); | |
2731 | ||
6c1491fb BP |
2732 | case OFPUTIL_NXT_FLOW_MOD_TABLE_ID: |
2733 | return handle_nxt_flow_mod_table_id(ofconn, oh); | |
d1e2cf21 BP |
2734 | |
2735 | case OFPUTIL_NXT_SET_FLOW_FORMAT: | |
2736 | return handle_nxt_set_flow_format(ofconn, oh); | |
2737 | ||
2738 | case OFPUTIL_NXT_FLOW_MOD: | |
2e4f5fcf | 2739 | return handle_flow_mod(ofconn, oh); |
d1e2cf21 | 2740 | |
349adfb2 | 2741 | /* Statistics requests. */ |
d1e2cf21 | 2742 | case OFPUTIL_OFPST_DESC_REQUEST: |
63f2140a | 2743 | return handle_desc_stats_request(ofconn, msg->data); |
d1e2cf21 BP |
2744 | |
2745 | case OFPUTIL_OFPST_FLOW_REQUEST: | |
349adfb2 | 2746 | case OFPUTIL_NXST_FLOW_REQUEST: |
63f2140a | 2747 | return handle_flow_stats_request(ofconn, msg->data); |
d1e2cf21 BP |
2748 | |
2749 | case OFPUTIL_OFPST_AGGREGATE_REQUEST: | |
76c93b22 | 2750 | case OFPUTIL_NXST_AGGREGATE_REQUEST: |
63f2140a | 2751 | return handle_aggregate_stats_request(ofconn, msg->data); |
d1e2cf21 BP |
2752 | |
2753 | case OFPUTIL_OFPST_TABLE_REQUEST: | |
63f2140a | 2754 | return handle_table_stats_request(ofconn, msg->data); |
d1e2cf21 BP |
2755 | |
2756 | case OFPUTIL_OFPST_PORT_REQUEST: | |
63f2140a | 2757 | return handle_port_stats_request(ofconn, msg->data); |
d1e2cf21 BP |
2758 | |
2759 | case OFPUTIL_OFPST_QUEUE_REQUEST: | |
63f2140a | 2760 | return handle_queue_stats_request(ofconn, msg->data); |
d1e2cf21 | 2761 | |
8f93e93c | 2762 | case OFPUTIL_MSG_INVALID: |
d1e2cf21 BP |
2763 | case OFPUTIL_OFPT_HELLO: |
2764 | case OFPUTIL_OFPT_ERROR: | |
2765 | case OFPUTIL_OFPT_FEATURES_REPLY: | |
2766 | case OFPUTIL_OFPT_GET_CONFIG_REPLY: | |
2767 | case OFPUTIL_OFPT_PACKET_IN: | |
2768 | case OFPUTIL_OFPT_FLOW_REMOVED: | |
2769 | case OFPUTIL_OFPT_PORT_STATUS: | |
2770 | case OFPUTIL_OFPT_BARRIER_REPLY: | |
2771 | case OFPUTIL_OFPT_QUEUE_GET_CONFIG_REQUEST: | |
2772 | case OFPUTIL_OFPT_QUEUE_GET_CONFIG_REPLY: | |
2773 | case OFPUTIL_OFPST_DESC_REPLY: | |
2774 | case OFPUTIL_OFPST_FLOW_REPLY: | |
2775 | case OFPUTIL_OFPST_QUEUE_REPLY: | |
2776 | case OFPUTIL_OFPST_PORT_REPLY: | |
2777 | case OFPUTIL_OFPST_TABLE_REPLY: | |
2778 | case OFPUTIL_OFPST_AGGREGATE_REPLY: | |
d1e2cf21 BP |
2779 | case OFPUTIL_NXT_ROLE_REPLY: |
2780 | case OFPUTIL_NXT_FLOW_REMOVED: | |
2781 | case OFPUTIL_NXST_FLOW_REPLY: | |
2782 | case OFPUTIL_NXST_AGGREGATE_REPLY: | |
064af421 BP |
2783 | default: |
2784 | if (VLOG_IS_WARN_ENABLED()) { | |
2785 | char *s = ofp_to_string(oh, ntohs(oh->length), 2); | |
2786 | VLOG_DBG_RL(&rl, "OpenFlow message ignored: %s", s); | |
2787 | free(s); | |
2788 | } | |
d1e2cf21 BP |
2789 | if (oh->type == OFPT_STATS_REQUEST || oh->type == OFPT_STATS_REPLY) { |
2790 | return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_STAT); | |
2791 | } else { | |
2792 | return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_TYPE); | |
2793 | } | |
064af421 | 2794 | } |
d1e2cf21 | 2795 | } |
064af421 | 2796 | |
7ee20df1 | 2797 | static bool |
d1e2cf21 BP |
2798 | handle_openflow(struct ofconn *ofconn, struct ofpbuf *ofp_msg) |
2799 | { | |
2800 | int error = handle_openflow__(ofconn, ofp_msg); | |
7ee20df1 | 2801 | if (error && error != OFPROTO_POSTPONE) { |
1be5ff75 | 2802 | ofconn_send_error(ofconn, ofp_msg->data, error); |
064af421 | 2803 | } |
d1e2cf21 | 2804 | COVERAGE_INC(ofproto_recv_openflow); |
7ee20df1 BP |
2805 | return error != OFPROTO_POSTPONE; |
2806 | } | |
2807 | \f | |
2808 | /* Asynchronous operations. */ | |
2809 | ||
2810 | /* Creates and returns a new ofopgroup that is not associated with any | |
2811 | * OpenFlow connection. | |
2812 | * | |
2813 | * The caller should add operations to the returned group with | |
2814 | * ofoperation_create() and then submit it with ofopgroup_submit(). */ | |
2815 | static struct ofopgroup * | |
7024dffe | 2816 | ofopgroup_create_unattached(struct ofproto *ofproto) |
7ee20df1 BP |
2817 | { |
2818 | struct ofopgroup *group = xzalloc(sizeof *group); | |
2819 | group->ofproto = ofproto; | |
2820 | list_init(&group->ofproto_node); | |
2821 | list_init(&group->ops); | |
2822 | list_init(&group->ofconn_node); | |
2823 | return group; | |
2824 | } | |
2825 | ||
7024dffe BP |
2826 | /* Creates and returns a new ofopgroup for 'ofproto'. |
2827 | * | |
2828 | * If 'ofconn' is NULL, the new ofopgroup is not associated with any OpenFlow | |
2829 | * connection. The 'request' and 'buffer_id' arguments are ignored. | |
2830 | * | |
2831 | * If 'ofconn' is nonnull, then the new ofopgroup is associated with 'ofconn'. | |
2832 | * If the ofopgroup eventually fails, then the error reply will include | |
2833 | * 'request'. If the ofopgroup eventually succeeds, then the packet with | |
2834 | * buffer id 'buffer_id' on 'ofconn' will be sent by 'ofconn''s ofproto. | |
7ee20df1 BP |
2835 | * |
2836 | * The caller should add operations to the returned group with | |
2837 | * ofoperation_create() and then submit it with ofopgroup_submit(). */ | |
2838 | static struct ofopgroup * | |
7024dffe BP |
2839 | ofopgroup_create(struct ofproto *ofproto, struct ofconn *ofconn, |
2840 | const struct ofp_header *request, uint32_t buffer_id) | |
7ee20df1 | 2841 | { |
7024dffe BP |
2842 | struct ofopgroup *group = ofopgroup_create_unattached(ofproto); |
2843 | if (ofconn) { | |
2844 | size_t request_len = ntohs(request->length); | |
7ee20df1 | 2845 | |
7024dffe | 2846 | assert(ofconn_get_ofproto(ofconn) == ofproto); |
7ee20df1 | 2847 | |
7024dffe BP |
2848 | ofconn_add_opgroup(ofconn, &group->ofconn_node); |
2849 | group->ofconn = ofconn; | |
2850 | group->request = xmemdup(request, MIN(request_len, 64)); | |
2851 | group->buffer_id = buffer_id; | |
2852 | } | |
7ee20df1 BP |
2853 | return group; |
2854 | } | |
2855 | ||
2856 | /* Submits 'group' for processing. | |
2857 | * | |
2858 | * If 'group' contains no operations (e.g. none were ever added, or all of the | |
2859 | * ones that were added completed synchronously), then it is destroyed | |
2860 | * immediately. Otherwise it is added to the ofproto's list of pending | |
2861 | * groups. */ | |
2862 | static void | |
2863 | ofopgroup_submit(struct ofopgroup *group) | |
2864 | { | |
2865 | if (list_is_empty(&group->ops)) { | |
2866 | ofopgroup_destroy(group); | |
2867 | } else { | |
2868 | list_push_back(&group->ofproto->pending, &group->ofproto_node); | |
dd5616b3 | 2869 | group->ofproto->n_pending++; |
7ee20df1 BP |
2870 | } |
2871 | } | |
2872 | ||
2873 | static void | |
2874 | ofopgroup_destroy(struct ofopgroup *group) | |
2875 | { | |
2876 | assert(list_is_empty(&group->ops)); | |
2877 | if (!list_is_empty(&group->ofproto_node)) { | |
dd5616b3 BP |
2878 | assert(group->ofproto->n_pending > 0); |
2879 | group->ofproto->n_pending--; | |
7ee20df1 BP |
2880 | list_remove(&group->ofproto_node); |
2881 | } | |
2882 | if (!list_is_empty(&group->ofconn_node)) { | |
2883 | list_remove(&group->ofconn_node); | |
2884 | if (group->error) { | |
2885 | ofconn_send_error(group->ofconn, group->request, group->error); | |
2886 | } | |
2887 | connmgr_retry(group->ofproto->connmgr); | |
2888 | } | |
2889 | free(group->request); | |
2890 | free(group); | |
2891 | } | |
2892 | ||
2893 | /* Initiates a new operation on 'rule', of the specified 'type', within | |
2894 | * 'group'. Prior to calling, 'rule' must not have any pending operation. */ | |
2895 | static void | |
2896 | ofoperation_create(struct ofopgroup *group, struct rule *rule, | |
2897 | enum ofoperation_type type) | |
2898 | { | |
2899 | struct ofoperation *op; | |
2900 | ||
2901 | assert(!rule->pending); | |
2902 | ||
2903 | op = rule->pending = xzalloc(sizeof *op); | |
2904 | op->group = group; | |
2905 | list_push_back(&group->ops, &op->group_node); | |
2906 | op->rule = rule; | |
2907 | op->type = type; | |
2908 | op->status = -1; | |
2909 | op->flow_cookie = rule->flow_cookie; | |
2910 | ||
2911 | if (type == OFOPERATION_DELETE) { | |
2912 | hmap_insert(&op->group->ofproto->deletions, &op->hmap_node, | |
2913 | cls_rule_hash(&rule->cr, rule->table_id)); | |
2914 | } | |
2915 | } | |
2916 | ||
2917 | static void | |
2918 | ofoperation_destroy(struct ofoperation *op) | |
2919 | { | |
2920 | struct ofopgroup *group = op->group; | |
2921 | ||
2922 | if (op->rule) { | |
2923 | op->rule->pending = NULL; | |
2924 | } | |
2925 | if (op->type == OFOPERATION_DELETE) { | |
2926 | hmap_remove(&group->ofproto->deletions, &op->hmap_node); | |
2927 | } | |
2928 | list_remove(&op->group_node); | |
2929 | free(op->actions); | |
2930 | free(op); | |
2931 | ||
2932 | if (list_is_empty(&group->ops) && !list_is_empty(&group->ofproto_node)) { | |
2933 | ofopgroup_destroy(group); | |
2934 | } | |
2935 | } | |
2936 | ||
2937 | /* Indicates that 'op' completed with status 'error', which is either 0 to | |
2938 | * indicate success or an OpenFlow error code (constructed with | |
2939 | * e.g. ofp_mkerr()). | |
2940 | * | |
a6a62132 BP |
2941 | * If 'error' is 0, indicating success, the operation will be committed |
2942 | * permanently to the flow table. There is one interesting subcase: | |
2943 | * | |
2944 | * - If 'op' is an "add flow" operation that is replacing an existing rule in | |
2945 | * the flow table (the "victim" rule) by a new one, then the caller must | |
2946 | * have uninitialized any derived state in the victim rule, as in step 5 in | |
2947 | * the "Life Cycle" in ofproto/ofproto-provider.h. ofoperation_complete() | |
2948 | * performs steps 6 and 7 for the victim rule, most notably by calling its | |
2949 | * ->rule_dealloc() function. | |
2950 | * | |
2951 | * If 'error' is nonzero, then generally the operation will be rolled back: | |
2952 | * | |
2953 | * - If 'op' is an "add flow" operation, ofproto removes the new rule or | |
2954 | * restores the original rule. The caller must have uninitialized any | |
2955 | * derived state in the new rule, as in step 5 of in the "Life Cycle" in | |
2956 | * ofproto/ofproto-provider.h. ofoperation_complete() performs steps 6 and | |
2957 | * and 7 for the new rule, calling its ->rule_dealloc() function. | |
2958 | * | |
2959 | * - If 'op' is a "modify flow" operation, ofproto restores the original | |
2960 | * actions. | |
2961 | * | |
2962 | * - 'op' must not be a "delete flow" operation. Removing a rule is not | |
2963 | * allowed to fail. It must always succeed. | |
7ee20df1 | 2964 | * |
5bee6e26 JP |
2965 | * Please see the large comment in ofproto/ofproto-provider.h titled |
2966 | * "Asynchronous Operation Support" for more information. */ | |
7ee20df1 BP |
2967 | void |
2968 | ofoperation_complete(struct ofoperation *op, int error) | |
2969 | { | |
2970 | struct ofopgroup *group = op->group; | |
2971 | struct rule *rule = op->rule; | |
2972 | struct classifier *table = &rule->ofproto->tables[rule->table_id]; | |
2973 | ||
2974 | assert(rule->pending == op); | |
2975 | assert(op->status < 0); | |
2976 | assert(error >= 0); | |
2977 | ||
2978 | if (!error | |
2979 | && !group->error | |
2980 | && op->type != OFOPERATION_DELETE | |
2981 | && group->ofconn | |
2982 | && group->buffer_id != UINT32_MAX | |
2983 | && list_is_singleton(&op->group_node)) { | |
2984 | struct ofpbuf *packet; | |
2985 | uint16_t in_port; | |
2986 | ||
2987 | error = ofconn_pktbuf_retrieve(group->ofconn, group->buffer_id, | |
2988 | &packet, &in_port); | |
2989 | if (packet) { | |
2990 | assert(!error); | |
2991 | error = rule_execute(rule, in_port, packet); | |
2992 | } | |
2993 | } | |
2994 | if (!group->error) { | |
2995 | group->error = error; | |
2996 | } | |
2997 | ||
2998 | switch (op->type) { | |
2999 | case OFOPERATION_ADD: | |
3000 | if (!error) { | |
3001 | if (op->victim) { | |
3002 | ofproto_rule_destroy__(op->victim); | |
3003 | } | |
3004 | } else { | |
3005 | if (op->victim) { | |
3006 | classifier_replace(table, &op->victim->cr); | |
3007 | op->victim = NULL; | |
3008 | } else { | |
3009 | classifier_remove(table, &rule->cr); | |
3010 | } | |
3011 | ofproto_rule_destroy__(rule); | |
3012 | } | |
3013 | op->victim = NULL; | |
3014 | break; | |
3015 | ||
3016 | case OFOPERATION_DELETE: | |
3017 | assert(!error); | |
3018 | ofproto_rule_destroy__(rule); | |
3019 | op->rule = NULL; | |
3020 | break; | |
3021 | ||
3022 | case OFOPERATION_MODIFY: | |
308881af BP |
3023 | if (!error) { |
3024 | rule->modified = time_msec(); | |
3025 | } else { | |
7ee20df1 BP |
3026 | free(rule->actions); |
3027 | rule->actions = op->actions; | |
3028 | rule->n_actions = op->n_actions; | |
3029 | op->actions = NULL; | |
3030 | } | |
3031 | break; | |
3032 | ||
3033 | default: | |
3034 | NOT_REACHED(); | |
3035 | } | |
3036 | ofoperation_destroy(op); | |
3037 | } | |
3038 | ||
3039 | struct rule * | |
3040 | ofoperation_get_victim(struct ofoperation *op) | |
3041 | { | |
3042 | assert(op->type == OFOPERATION_ADD); | |
3043 | return op->victim; | |
064af421 BP |
3044 | } |
3045 | \f | |
064af421 | 3046 | static uint64_t |
fa60c019 | 3047 | pick_datapath_id(const struct ofproto *ofproto) |
064af421 | 3048 | { |
fa60c019 | 3049 | const struct ofport *port; |
064af421 | 3050 | |
abe529af | 3051 | port = ofproto_get_port(ofproto, OFPP_LOCAL); |
fa60c019 BP |
3052 | if (port) { |
3053 | uint8_t ea[ETH_ADDR_LEN]; | |
3054 | int error; | |
3055 | ||
3056 | error = netdev_get_etheraddr(port->netdev, ea); | |
064af421 BP |
3057 | if (!error) { |
3058 | return eth_addr_to_uint64(ea); | |
3059 | } | |
3060 | VLOG_WARN("could not get MAC address for %s (%s)", | |
fa60c019 | 3061 | netdev_get_name(port->netdev), strerror(error)); |
064af421 | 3062 | } |
fa60c019 | 3063 | return ofproto->fallback_dpid; |
064af421 BP |
3064 | } |
3065 | ||
3066 | static uint64_t | |
3067 | pick_fallback_dpid(void) | |
3068 | { | |
3069 | uint8_t ea[ETH_ADDR_LEN]; | |
70150daf | 3070 | eth_addr_nicira_random(ea); |
064af421 BP |
3071 | return eth_addr_to_uint64(ea); |
3072 | } | |
3073 | \f | |
abe529af | 3074 | /* unixctl commands. */ |
7aa697dd | 3075 | |
abe529af | 3076 | struct ofproto * |
2ac6bedd | 3077 | ofproto_lookup(const char *name) |
7aa697dd | 3078 | { |
2ac6bedd | 3079 | struct ofproto *ofproto; |
7aa697dd | 3080 | |
2ac6bedd BP |
3081 | HMAP_FOR_EACH_WITH_HASH (ofproto, hmap_node, hash_string(name, 0), |
3082 | &all_ofprotos) { | |
3083 | if (!strcmp(ofproto->name, name)) { | |
3084 | return ofproto; | |
3085 | } | |
7aa697dd | 3086 | } |
2ac6bedd | 3087 | return NULL; |
7aa697dd BP |
3088 | } |
3089 | ||
3090 | static void | |
7aa697dd BP |
3091 | ofproto_unixctl_list(struct unixctl_conn *conn, const char *arg OVS_UNUSED, |
3092 | void *aux OVS_UNUSED) | |
7aa697dd | 3093 | { |
7aa697dd | 3094 | struct ofproto *ofproto; |
7aa697dd | 3095 | struct ds results; |
7aa697dd | 3096 | |
7aa697dd | 3097 | ds_init(&results); |
2ac6bedd BP |
3098 | HMAP_FOR_EACH (ofproto, hmap_node, &all_ofprotos) { |
3099 | ds_put_format(&results, "%s\n", ofproto->name); | |
7aa697dd | 3100 | } |
7aa697dd BP |
3101 | unixctl_command_reply(conn, 200, ds_cstr(&results)); |
3102 | ds_destroy(&results); | |
7aa697dd BP |
3103 | } |
3104 | ||
3105 | static void | |
3106 | ofproto_unixctl_init(void) | |
3107 | { | |
3108 | static bool registered; | |
3109 | if (registered) { | |
3110 | return; | |
3111 | } | |
3112 | registered = true; | |
3113 | ||
7ff2009a | 3114 | unixctl_command_register("ofproto/list", "", ofproto_unixctl_list, NULL); |
064af421 | 3115 | } |