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614c4892 | 1 | /* |
275707c3 | 2 | * Copyright (c) 2010, 2011, 2012, 2013 Nicira, Inc. |
614c4892 BP |
3 | * |
4 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
5 | * you may not use this file except in compliance with the License. | |
6 | * You may obtain a copy of the License at: | |
7 | * | |
8 | * http://www.apache.org/licenses/LICENSE-2.0 | |
9 | * | |
10 | * Unless required by applicable law or agreed to in writing, software | |
11 | * distributed under the License is distributed on an "AS IS" BASIS, | |
12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
13 | * See the License for the specific language governing permissions and | |
14 | * limitations under the License. | |
15 | */ | |
16 | ||
17 | #include <config.h> | |
18 | ||
19 | #include "dummy.h" | |
20 | ||
21 | #include <errno.h> | |
22 | ||
df1e5a3b | 23 | #include "dpif-netdev.h" |
7d7fffe8 | 24 | #include "dynamic-string.h" |
fbac791a | 25 | #include "flow.h" |
614c4892 BP |
26 | #include "list.h" |
27 | #include "netdev-provider.h" | |
c060c4cf | 28 | #include "netdev-vport.h" |
fbac791a BP |
29 | #include "odp-util.h" |
30 | #include "ofp-print.h" | |
31 | #include "ofpbuf.h" | |
91088554 | 32 | #include "packet-dpif.h" |
614c4892 | 33 | #include "packets.h" |
55d87b06 | 34 | #include "pcap-file.h" |
fbac791a | 35 | #include "poll-loop.h" |
614c4892 | 36 | #include "shash.h" |
0cbfe35d | 37 | #include "sset.h" |
eab5611a BP |
38 | #include "stream.h" |
39 | #include "unaligned.h" | |
55d87b06 | 40 | #include "timeval.h" |
fbac791a | 41 | #include "unixctl.h" |
631486bd | 42 | #include "reconnect.h" |
614c4892 BP |
43 | #include "vlog.h" |
44 | ||
45 | VLOG_DEFINE_THIS_MODULE(netdev_dummy); | |
46 | ||
631486bd AZ |
47 | struct reconnect; |
48 | ||
49 | struct dummy_packet_stream { | |
eab5611a BP |
50 | struct stream *stream; |
51 | struct ofpbuf rxbuf; | |
52 | struct list txq; | |
53 | }; | |
54 | ||
631486bd AZ |
55 | enum dummy_packet_conn_type { |
56 | NONE, /* No connection is configured. */ | |
57 | PASSIVE, /* Listener. */ | |
58 | ACTIVE /* Connect to listener. */ | |
59 | }; | |
60 | ||
7d7fffe8 AZ |
61 | enum dummy_netdev_conn_state { |
62 | CONN_STATE_CONNECTED, /* Listener connected. */ | |
63 | CONN_STATE_NOT_CONNECTED, /* Listener not connected. */ | |
64 | CONN_STATE_UNKNOWN, /* No relavent information. */ | |
65 | }; | |
66 | ||
631486bd AZ |
67 | struct dummy_packet_pconn { |
68 | struct pstream *pstream; | |
69 | struct dummy_packet_stream *streams; | |
70 | size_t n_streams; | |
71 | }; | |
72 | ||
73 | struct dummy_packet_rconn { | |
74 | struct dummy_packet_stream *rstream; | |
75 | struct reconnect *reconnect; | |
76 | }; | |
77 | ||
78 | struct dummy_packet_conn { | |
79 | enum dummy_packet_conn_type type; | |
80 | union { | |
81 | struct dummy_packet_pconn pconn; | |
82 | struct dummy_packet_rconn rconn; | |
83 | } u; | |
84 | }; | |
85 | ||
5e1de67f BP |
86 | /* Protects 'dummy_list'. */ |
87 | static struct ovs_mutex dummy_list_mutex = OVS_MUTEX_INITIALIZER; | |
88 | ||
89 | /* Contains all 'struct dummy_dev's. */ | |
90 | static struct list dummy_list OVS_GUARDED_BY(dummy_list_mutex) | |
91 | = LIST_INITIALIZER(&dummy_list); | |
92 | ||
b5d57fc8 BP |
93 | struct netdev_dummy { |
94 | struct netdev up; | |
86383816 | 95 | |
5e1de67f BP |
96 | /* In dummy_list. */ |
97 | struct list list_node OVS_GUARDED_BY(dummy_list_mutex); | |
98 | ||
86383816 | 99 | /* Protects all members below. */ |
5e1de67f | 100 | struct ovs_mutex mutex OVS_ACQ_AFTER(dummy_list_mutex); |
86383816 | 101 | |
36e2140d BP |
102 | uint8_t hwaddr[ETH_ADDR_LEN] OVS_GUARDED; |
103 | int mtu OVS_GUARDED; | |
104 | struct netdev_stats stats OVS_GUARDED; | |
105 | enum netdev_flags flags OVS_GUARDED; | |
36e2140d BP |
106 | int ifindex OVS_GUARDED; |
107 | ||
631486bd | 108 | struct dummy_packet_conn conn OVS_GUARDED; |
36e2140d | 109 | |
f7791740 | 110 | FILE *tx_pcap, *rxq_pcap OVS_GUARDED; |
55d87b06 | 111 | |
a36de779 | 112 | struct in_addr address, netmask; |
f7791740 | 113 | struct list rxes OVS_GUARDED; /* List of child "netdev_rxq_dummy"s. */ |
614c4892 BP |
114 | }; |
115 | ||
e34cfdd9 BP |
116 | /* Max 'recv_queue_len' in struct netdev_dummy. */ |
117 | #define NETDEV_DUMMY_MAX_QUEUE 100 | |
118 | ||
f7791740 PS |
119 | struct netdev_rxq_dummy { |
120 | struct netdev_rxq up; | |
b5d57fc8 | 121 | struct list node; /* In netdev_dummy's "rxes" list. */ |
fbac791a | 122 | struct list recv_queue; |
e34cfdd9 | 123 | int recv_queue_len; /* list_size(&recv_queue). */ |
98045eda | 124 | struct seq *seq; /* Reports newly queued packets. */ |
614c4892 BP |
125 | }; |
126 | ||
95d4ec33 | 127 | static unixctl_cb_func netdev_dummy_set_admin_state; |
9dc63482 | 128 | static int netdev_dummy_construct(struct netdev *); |
eab5611a BP |
129 | static void netdev_dummy_queue_packet(struct netdev_dummy *, struct ofpbuf *); |
130 | ||
631486bd | 131 | static void dummy_packet_stream_close(struct dummy_packet_stream *); |
614c4892 BP |
132 | |
133 | static bool | |
134 | is_dummy_class(const struct netdev_class *class) | |
135 | { | |
9dc63482 | 136 | return class->construct == netdev_dummy_construct; |
614c4892 BP |
137 | } |
138 | ||
614c4892 BP |
139 | static struct netdev_dummy * |
140 | netdev_dummy_cast(const struct netdev *netdev) | |
141 | { | |
b5d57fc8 | 142 | ovs_assert(is_dummy_class(netdev_get_class(netdev))); |
180c6d0b | 143 | return CONTAINER_OF(netdev, struct netdev_dummy, up); |
614c4892 BP |
144 | } |
145 | ||
f7791740 PS |
146 | static struct netdev_rxq_dummy * |
147 | netdev_rxq_dummy_cast(const struct netdev_rxq *rx) | |
796223f5 | 148 | { |
9dc63482 | 149 | ovs_assert(is_dummy_class(netdev_get_class(rx->netdev))); |
f7791740 | 150 | return CONTAINER_OF(rx, struct netdev_rxq_dummy, up); |
796223f5 BP |
151 | } |
152 | ||
eab5611a | 153 | static void |
631486bd | 154 | dummy_packet_stream_init(struct dummy_packet_stream *s, struct stream *stream) |
eab5611a | 155 | { |
631486bd AZ |
156 | int rxbuf_size = stream ? 2048 : 0; |
157 | s->stream = stream; | |
158 | ofpbuf_init(&s->rxbuf, rxbuf_size); | |
159 | list_init(&s->txq); | |
160 | } | |
eab5611a | 161 | |
631486bd AZ |
162 | static struct dummy_packet_stream * |
163 | dummy_packet_stream_create(struct stream *stream) | |
164 | { | |
165 | struct dummy_packet_stream *s; | |
eab5611a | 166 | |
631486bd AZ |
167 | s = xzalloc(sizeof *s); |
168 | dummy_packet_stream_init(s, stream); | |
86383816 | 169 | |
631486bd AZ |
170 | return s; |
171 | } | |
eab5611a | 172 | |
631486bd AZ |
173 | static void |
174 | dummy_packet_stream_wait(struct dummy_packet_stream *s) | |
175 | { | |
176 | stream_run_wait(s->stream); | |
177 | if (!list_is_empty(&s->txq)) { | |
178 | stream_send_wait(s->stream); | |
179 | } | |
180 | stream_recv_wait(s->stream); | |
181 | } | |
eab5611a | 182 | |
631486bd AZ |
183 | static void |
184 | dummy_packet_stream_send(struct dummy_packet_stream *s, const void *buffer, size_t size) | |
185 | { | |
186 | if (list_size(&s->txq) < NETDEV_DUMMY_MAX_QUEUE) { | |
187 | struct ofpbuf *b; | |
eab5611a | 188 | |
631486bd AZ |
189 | b = ofpbuf_clone_data_with_headroom(buffer, size, 2); |
190 | put_unaligned_be16(ofpbuf_push_uninit(b, 2), htons(size)); | |
191 | list_push_back(&s->txq, &b->list_node); | |
192 | } | |
193 | } | |
194 | ||
195 | static int | |
196 | dummy_packet_stream_run(struct netdev_dummy *dev, struct dummy_packet_stream *s) | |
197 | { | |
198 | int error = 0; | |
199 | size_t n; | |
200 | ||
201 | stream_run(s->stream); | |
202 | ||
203 | if (!list_is_empty(&s->txq)) { | |
204 | struct ofpbuf *txbuf; | |
205 | int retval; | |
206 | ||
207 | txbuf = ofpbuf_from_list(list_front(&s->txq)); | |
1f317cb5 | 208 | retval = stream_send(s->stream, ofpbuf_data(txbuf), ofpbuf_size(txbuf)); |
c0c4982f | 209 | |
631486bd AZ |
210 | if (retval > 0) { |
211 | ofpbuf_pull(txbuf, retval); | |
1f317cb5 | 212 | if (!ofpbuf_size(txbuf)) { |
631486bd AZ |
213 | list_remove(&txbuf->list_node); |
214 | ofpbuf_delete(txbuf); | |
eab5611a | 215 | } |
631486bd AZ |
216 | } else if (retval != -EAGAIN) { |
217 | error = -retval; | |
eab5611a | 218 | } |
631486bd | 219 | } |
86f1d032 | 220 | |
631486bd | 221 | if (!error) { |
1f317cb5 PS |
222 | if (ofpbuf_size(&s->rxbuf) < 2) { |
223 | n = 2 - ofpbuf_size(&s->rxbuf); | |
631486bd AZ |
224 | } else { |
225 | uint16_t frame_len; | |
226 | ||
1f317cb5 | 227 | frame_len = ntohs(get_unaligned_be16(ofpbuf_data(&s->rxbuf))); |
631486bd AZ |
228 | if (frame_len < ETH_HEADER_LEN) { |
229 | error = EPROTO; | |
230 | n = 0; | |
231 | } else { | |
1f317cb5 | 232 | n = (2 + frame_len) - ofpbuf_size(&s->rxbuf); |
631486bd AZ |
233 | } |
234 | } | |
eab5611a | 235 | } |
631486bd AZ |
236 | if (!error) { |
237 | int retval; | |
238 | ||
239 | ofpbuf_prealloc_tailroom(&s->rxbuf, n); | |
240 | retval = stream_recv(s->stream, ofpbuf_tail(&s->rxbuf), n); | |
c0c4982f | 241 | |
631486bd | 242 | if (retval > 0) { |
1f317cb5 PS |
243 | ofpbuf_set_size(&s->rxbuf, ofpbuf_size(&s->rxbuf) + retval); |
244 | if (retval == n && ofpbuf_size(&s->rxbuf) > 2) { | |
631486bd AZ |
245 | ofpbuf_pull(&s->rxbuf, 2); |
246 | netdev_dummy_queue_packet(dev, | |
247 | ofpbuf_clone(&s->rxbuf)); | |
248 | ofpbuf_clear(&s->rxbuf); | |
249 | } | |
250 | } else if (retval != -EAGAIN) { | |
251 | error = (retval < 0 ? -retval | |
1f317cb5 | 252 | : ofpbuf_size(&s->rxbuf) ? EPROTO |
631486bd AZ |
253 | : EOF); |
254 | } | |
255 | } | |
256 | ||
257 | return error; | |
eab5611a BP |
258 | } |
259 | ||
260 | static void | |
631486bd | 261 | dummy_packet_stream_close(struct dummy_packet_stream *s) |
eab5611a BP |
262 | { |
263 | stream_close(s->stream); | |
264 | ofpbuf_uninit(&s->rxbuf); | |
265 | ofpbuf_list_delete(&s->txq); | |
266 | } | |
267 | ||
268 | static void | |
631486bd | 269 | dummy_packet_conn_init(struct dummy_packet_conn *conn) |
eab5611a | 270 | { |
631486bd AZ |
271 | memset(conn, 0, sizeof *conn); |
272 | conn->type = NONE; | |
273 | } | |
eab5611a | 274 | |
631486bd AZ |
275 | static void |
276 | dummy_packet_conn_get_config(struct dummy_packet_conn *conn, struct smap *args) | |
277 | { | |
eab5611a | 278 | |
631486bd AZ |
279 | switch (conn->type) { |
280 | case PASSIVE: | |
281 | smap_add(args, "pstream", pstream_get_name(conn->u.pconn.pstream)); | |
282 | break; | |
283 | ||
284 | case ACTIVE: | |
285 | smap_add(args, "stream", stream_get_name(conn->u.rconn.rstream->stream)); | |
286 | break; | |
287 | ||
288 | case NONE: | |
289 | default: | |
290 | break; | |
291 | } | |
292 | } | |
293 | ||
294 | static void | |
295 | dummy_packet_conn_close(struct dummy_packet_conn *conn) | |
296 | { | |
297 | int i; | |
298 | struct dummy_packet_pconn *pconn = &conn->u.pconn; | |
299 | struct dummy_packet_rconn *rconn = &conn->u.rconn; | |
300 | ||
301 | switch (conn->type) { | |
302 | case PASSIVE: | |
303 | pstream_close(pconn->pstream); | |
304 | for (i = 0; i < pconn->n_streams; i++) { | |
305 | dummy_packet_stream_close(&pconn->streams[i]); | |
306 | } | |
307 | free(pconn->streams); | |
308 | pconn->pstream = NULL; | |
309 | pconn->streams = NULL; | |
310 | break; | |
311 | ||
312 | case ACTIVE: | |
313 | dummy_packet_stream_close(rconn->rstream); | |
314 | free(rconn->rstream); | |
315 | rconn->rstream = NULL; | |
316 | reconnect_destroy(rconn->reconnect); | |
317 | rconn->reconnect = NULL; | |
318 | break; | |
319 | ||
320 | case NONE: | |
321 | default: | |
322 | break; | |
323 | } | |
324 | ||
325 | conn->type = NONE; | |
326 | memset(conn, 0, sizeof *conn); | |
327 | } | |
328 | ||
329 | static void | |
330 | dummy_packet_conn_set_config(struct dummy_packet_conn *conn, | |
331 | const struct smap *args) | |
332 | { | |
333 | const char *pstream = smap_get(args, "pstream"); | |
334 | const char *stream = smap_get(args, "stream"); | |
335 | ||
336 | if (pstream && stream) { | |
337 | VLOG_WARN("Open failed: both %s and %s are configured", | |
338 | pstream, stream); | |
339 | return; | |
340 | } | |
341 | ||
342 | switch (conn->type) { | |
343 | case PASSIVE: | |
344 | if (!strcmp(pstream_get_name(conn->u.pconn.pstream), pstream)) { | |
345 | return; | |
346 | } | |
347 | dummy_packet_conn_close(conn); | |
348 | break; | |
349 | case ACTIVE: | |
350 | if (!strcmp(stream_get_name(conn->u.rconn.rstream->stream), stream)) { | |
351 | return; | |
352 | } | |
353 | dummy_packet_conn_close(conn); | |
354 | break; | |
355 | case NONE: | |
356 | default: | |
357 | break; | |
358 | } | |
359 | ||
360 | if (pstream) { | |
361 | int error; | |
362 | ||
363 | error = pstream_open(pstream, &conn->u.pconn.pstream, DSCP_DEFAULT); | |
364 | if (error) { | |
365 | VLOG_WARN("%s: open failed (%s)", pstream, ovs_strerror(error)); | |
366 | } else { | |
367 | conn->type = PASSIVE; | |
368 | } | |
369 | } | |
370 | ||
371 | if (stream) { | |
372 | int error; | |
373 | struct stream *active_stream; | |
374 | struct reconnect *reconnect;; | |
375 | ||
376 | reconnect = reconnect_create(time_msec()); | |
377 | reconnect_set_name(reconnect, stream); | |
378 | reconnect_set_passive(reconnect, false, time_msec()); | |
379 | reconnect_enable(reconnect, time_msec()); | |
fc24d64d | 380 | reconnect_set_backoff(reconnect, 100, INT_MAX); |
13af13b3 | 381 | reconnect_set_probe_interval(reconnect, 0); |
631486bd | 382 | conn->u.rconn.reconnect = reconnect; |
c0c4982f | 383 | conn->type = ACTIVE; |
631486bd AZ |
384 | |
385 | error = stream_open(stream, &active_stream, DSCP_DEFAULT); | |
386 | conn->u.rconn.rstream = dummy_packet_stream_create(active_stream); | |
387 | ||
388 | switch (error) { | |
389 | case 0: | |
c0c4982f | 390 | reconnect_connected(reconnect, time_msec()); |
631486bd AZ |
391 | break; |
392 | ||
393 | case EAGAIN: | |
c0c4982f | 394 | reconnect_connecting(reconnect, time_msec()); |
631486bd AZ |
395 | break; |
396 | ||
397 | default: | |
c0c4982f | 398 | reconnect_connect_failed(reconnect, time_msec(), error); |
631486bd | 399 | stream_close(active_stream); |
c0c4982f | 400 | conn->u.rconn.rstream->stream = NULL; |
631486bd AZ |
401 | break; |
402 | } | |
403 | } | |
404 | } | |
405 | ||
406 | static void | |
407 | dummy_pconn_run(struct netdev_dummy *dev) | |
408 | OVS_REQUIRES(dev->mutex) | |
409 | { | |
410 | struct stream *new_stream; | |
411 | struct dummy_packet_pconn *pconn = &dev->conn.u.pconn; | |
412 | int error; | |
413 | size_t i; | |
414 | ||
415 | error = pstream_accept(pconn->pstream, &new_stream); | |
416 | if (!error) { | |
417 | struct dummy_packet_stream *s; | |
418 | ||
419 | pconn->streams = xrealloc(pconn->streams, | |
420 | ((pconn->n_streams + 1) | |
421 | * sizeof *s)); | |
422 | s = &pconn->streams[pconn->n_streams++]; | |
423 | dummy_packet_stream_init(s, new_stream); | |
424 | } else if (error != EAGAIN) { | |
425 | VLOG_WARN("%s: accept failed (%s)", | |
426 | pstream_get_name(pconn->pstream), ovs_strerror(error)); | |
427 | pstream_close(pconn->pstream); | |
428 | pconn->pstream = NULL; | |
429 | dev->conn.type = NONE; | |
430 | } | |
431 | ||
432 | for (i = 0; i < pconn->n_streams; i++) { | |
433 | struct dummy_packet_stream *s = &pconn->streams[i]; | |
434 | ||
435 | error = dummy_packet_stream_run(dev, s); | |
436 | if (error) { | |
437 | VLOG_DBG("%s: closing connection (%s)", | |
438 | stream_get_name(s->stream), | |
439 | ovs_retval_to_string(error)); | |
440 | dummy_packet_stream_close(s); | |
441 | pconn->streams[i] = pconn->streams[--pconn->n_streams]; | |
eab5611a | 442 | } |
631486bd AZ |
443 | } |
444 | } | |
eab5611a | 445 | |
631486bd AZ |
446 | static void |
447 | dummy_rconn_run(struct netdev_dummy *dev) | |
448 | OVS_REQUIRES(dev->mutex) | |
449 | { | |
450 | struct dummy_packet_rconn *rconn = &dev->conn.u.rconn; | |
451 | ||
452 | switch (reconnect_run(rconn->reconnect, time_msec())) { | |
453 | case RECONNECT_CONNECT: | |
454 | { | |
c0c4982f AZ |
455 | int error; |
456 | ||
457 | if (rconn->rstream->stream) { | |
458 | error = stream_connect(rconn->rstream->stream); | |
459 | } else { | |
460 | error = stream_open(reconnect_get_name(rconn->reconnect), | |
461 | &rconn->rstream->stream, DSCP_DEFAULT); | |
462 | } | |
631486bd | 463 | |
c0c4982f AZ |
464 | switch (error) { |
465 | case 0: | |
631486bd | 466 | reconnect_connected(rconn->reconnect, time_msec()); |
631486bd AZ |
467 | break; |
468 | ||
469 | case EAGAIN: | |
470 | reconnect_connecting(rconn->reconnect, time_msec()); | |
c0c4982f | 471 | break; |
631486bd AZ |
472 | |
473 | default: | |
c0c4982f | 474 | reconnect_connect_failed(rconn->reconnect, time_msec(), error); |
631486bd | 475 | stream_close(rconn->rstream->stream); |
c0c4982f AZ |
476 | rconn->rstream->stream = NULL; |
477 | break; | |
eab5611a | 478 | } |
eab5611a | 479 | } |
631486bd AZ |
480 | break; |
481 | ||
482 | case RECONNECT_DISCONNECT: | |
483 | case RECONNECT_PROBE: | |
484 | default: | |
485 | break; | |
486 | } | |
487 | ||
488 | if (reconnect_is_connected(rconn->reconnect)) { | |
489 | int err; | |
490 | ||
491 | err = dummy_packet_stream_run(dev, rconn->rstream); | |
492 | ||
493 | if (err) { | |
494 | reconnect_disconnected(rconn->reconnect, time_msec(), err); | |
495 | stream_close(rconn->rstream->stream); | |
c0c4982f | 496 | rconn->rstream->stream = NULL; |
631486bd AZ |
497 | } |
498 | } | |
499 | } | |
500 | ||
501 | static void | |
502 | dummy_packet_conn_run(struct netdev_dummy *dev) | |
503 | OVS_REQUIRES(dev->mutex) | |
504 | { | |
505 | switch (dev->conn.type) { | |
506 | case PASSIVE: | |
507 | dummy_pconn_run(dev); | |
508 | break; | |
509 | ||
510 | case ACTIVE: | |
511 | dummy_rconn_run(dev); | |
512 | break; | |
513 | ||
514 | case NONE: | |
515 | default: | |
516 | break; | |
517 | } | |
518 | } | |
519 | ||
520 | static void | |
521 | dummy_packet_conn_wait(struct dummy_packet_conn *conn) | |
522 | { | |
523 | int i; | |
524 | switch (conn->type) { | |
525 | case PASSIVE: | |
526 | pstream_wait(conn->u.pconn.pstream); | |
527 | for (i = 0; i < conn->u.pconn.n_streams; i++) { | |
528 | struct dummy_packet_stream *s = &conn->u.pconn.streams[i]; | |
529 | dummy_packet_stream_wait(s); | |
530 | } | |
531 | break; | |
532 | case ACTIVE: | |
c0c4982f AZ |
533 | if (reconnect_is_connected(conn->u.rconn.reconnect)) { |
534 | dummy_packet_stream_wait(conn->u.rconn.rstream); | |
535 | } | |
631486bd AZ |
536 | break; |
537 | ||
538 | case NONE: | |
539 | default: | |
540 | break; | |
541 | } | |
542 | } | |
543 | ||
544 | static void | |
545 | dummy_packet_conn_send(struct dummy_packet_conn *conn, | |
546 | const void *buffer, size_t size) | |
547 | { | |
548 | int i; | |
549 | ||
550 | switch (conn->type) { | |
551 | case PASSIVE: | |
552 | for (i = 0; i < conn->u.pconn.n_streams; i++) { | |
553 | struct dummy_packet_stream *s = &conn->u.pconn.streams[i]; | |
554 | ||
555 | dummy_packet_stream_send(s, buffer, size); | |
556 | pstream_wait(conn->u.pconn.pstream); | |
557 | } | |
558 | break; | |
559 | ||
560 | case ACTIVE: | |
c0c4982f AZ |
561 | if (reconnect_is_connected(conn->u.rconn.reconnect)) { |
562 | dummy_packet_stream_send(conn->u.rconn.rstream, buffer, size); | |
563 | dummy_packet_stream_wait(conn->u.rconn.rstream); | |
564 | } | |
631486bd AZ |
565 | break; |
566 | ||
567 | case NONE: | |
568 | default: | |
569 | break; | |
570 | } | |
571 | } | |
572 | ||
7d7fffe8 AZ |
573 | static enum dummy_netdev_conn_state |
574 | dummy_netdev_get_conn_state(struct dummy_packet_conn *conn) | |
575 | { | |
576 | enum dummy_netdev_conn_state state; | |
577 | ||
578 | if (conn->type == ACTIVE) { | |
579 | if (reconnect_is_connected(conn->u.rconn.reconnect)) { | |
580 | state = CONN_STATE_CONNECTED; | |
581 | } else { | |
582 | state = CONN_STATE_NOT_CONNECTED; | |
583 | } | |
584 | } else { | |
585 | state = CONN_STATE_UNKNOWN; | |
586 | } | |
587 | ||
588 | return state; | |
589 | } | |
590 | ||
631486bd AZ |
591 | static void |
592 | netdev_dummy_run(void) | |
593 | { | |
594 | struct netdev_dummy *dev; | |
595 | ||
596 | ovs_mutex_lock(&dummy_list_mutex); | |
597 | LIST_FOR_EACH (dev, list_node, &dummy_list) { | |
598 | ovs_mutex_lock(&dev->mutex); | |
599 | dummy_packet_conn_run(dev); | |
600 | ovs_mutex_unlock(&dev->mutex); | |
601 | } | |
602 | ovs_mutex_unlock(&dummy_list_mutex); | |
603 | } | |
604 | ||
605 | static void | |
606 | netdev_dummy_wait(void) | |
607 | { | |
608 | struct netdev_dummy *dev; | |
609 | ||
610 | ovs_mutex_lock(&dummy_list_mutex); | |
611 | LIST_FOR_EACH (dev, list_node, &dummy_list) { | |
612 | ovs_mutex_lock(&dev->mutex); | |
613 | dummy_packet_conn_wait(&dev->conn); | |
86383816 | 614 | ovs_mutex_unlock(&dev->mutex); |
eab5611a | 615 | } |
5e1de67f | 616 | ovs_mutex_unlock(&dummy_list_mutex); |
eab5611a BP |
617 | } |
618 | ||
9dc63482 BP |
619 | static struct netdev * |
620 | netdev_dummy_alloc(void) | |
621 | { | |
622 | struct netdev_dummy *netdev = xzalloc(sizeof *netdev); | |
623 | return &netdev->up; | |
624 | } | |
625 | ||
614c4892 | 626 | static int |
9dc63482 | 627 | netdev_dummy_construct(struct netdev *netdev_) |
614c4892 | 628 | { |
97e5b2e5 | 629 | static atomic_count next_n = ATOMIC_COUNT_INIT(0xaa550000); |
9dc63482 | 630 | struct netdev_dummy *netdev = netdev_dummy_cast(netdev_); |
01cdb3a1 BP |
631 | unsigned int n; |
632 | ||
97e5b2e5 | 633 | n = atomic_count_inc(&next_n); |
86383816 | 634 | |
834d6caf | 635 | ovs_mutex_init(&netdev->mutex); |
36e2140d | 636 | ovs_mutex_lock(&netdev->mutex); |
b5d57fc8 BP |
637 | netdev->hwaddr[0] = 0xaa; |
638 | netdev->hwaddr[1] = 0x55; | |
639 | netdev->hwaddr[2] = n >> 24; | |
640 | netdev->hwaddr[3] = n >> 16; | |
641 | netdev->hwaddr[4] = n >> 8; | |
642 | netdev->hwaddr[5] = n; | |
643 | netdev->mtu = 1500; | |
644 | netdev->flags = 0; | |
b5d57fc8 | 645 | netdev->ifindex = -EOPNOTSUPP; |
eab5611a | 646 | |
631486bd | 647 | dummy_packet_conn_init(&netdev->conn); |
eab5611a | 648 | |
b5d57fc8 | 649 | list_init(&netdev->rxes); |
36e2140d | 650 | ovs_mutex_unlock(&netdev->mutex); |
b5d57fc8 | 651 | |
5e1de67f BP |
652 | ovs_mutex_lock(&dummy_list_mutex); |
653 | list_push_back(&dummy_list, &netdev->list_node); | |
654 | ovs_mutex_unlock(&dummy_list_mutex); | |
655 | ||
614c4892 BP |
656 | return 0; |
657 | } | |
658 | ||
659 | static void | |
9dc63482 | 660 | netdev_dummy_destruct(struct netdev *netdev_) |
614c4892 | 661 | { |
b5d57fc8 | 662 | struct netdev_dummy *netdev = netdev_dummy_cast(netdev_); |
614c4892 | 663 | |
5e1de67f BP |
664 | ovs_mutex_lock(&dummy_list_mutex); |
665 | list_remove(&netdev->list_node); | |
666 | ovs_mutex_unlock(&dummy_list_mutex); | |
667 | ||
36e2140d | 668 | ovs_mutex_lock(&netdev->mutex); |
631486bd AZ |
669 | dummy_packet_conn_close(&netdev->conn); |
670 | netdev->conn.type = NONE; | |
671 | ||
36e2140d | 672 | ovs_mutex_unlock(&netdev->mutex); |
86383816 | 673 | ovs_mutex_destroy(&netdev->mutex); |
9dc63482 BP |
674 | } |
675 | ||
676 | static void | |
677 | netdev_dummy_dealloc(struct netdev *netdev_) | |
678 | { | |
679 | struct netdev_dummy *netdev = netdev_dummy_cast(netdev_); | |
680 | ||
b5d57fc8 | 681 | free(netdev); |
614c4892 BP |
682 | } |
683 | ||
8073dd31 | 684 | static int |
b5d57fc8 | 685 | netdev_dummy_get_config(const struct netdev *netdev_, struct smap *args) |
8073dd31 | 686 | { |
b5d57fc8 | 687 | struct netdev_dummy *netdev = netdev_dummy_cast(netdev_); |
8073dd31 | 688 | |
5a9bf514 | 689 | ovs_mutex_lock(&netdev->mutex); |
55d87b06 | 690 | |
b5d57fc8 BP |
691 | if (netdev->ifindex >= 0) { |
692 | smap_add_format(args, "ifindex", "%d", netdev->ifindex); | |
8073dd31 | 693 | } |
55d87b06 | 694 | |
631486bd | 695 | dummy_packet_conn_get_config(&netdev->conn, args); |
5a9bf514 | 696 | |
55d87b06 | 697 | ovs_mutex_unlock(&netdev->mutex); |
8073dd31 NM |
698 | return 0; |
699 | } | |
700 | ||
a36de779 PS |
701 | static int |
702 | netdev_dummy_get_in4(const struct netdev *netdev_, | |
703 | struct in_addr *address, struct in_addr *netmask) | |
704 | { | |
705 | struct netdev_dummy *netdev = netdev_dummy_cast(netdev_); | |
706 | ||
707 | ovs_mutex_lock(&netdev->mutex); | |
708 | *address = netdev->address; | |
709 | *netmask = netdev->netmask; | |
710 | ovs_mutex_unlock(&netdev->mutex); | |
711 | return 0; | |
712 | } | |
713 | ||
714 | static int | |
715 | netdev_dummy_set_in4(struct netdev *netdev_, struct in_addr address, | |
716 | struct in_addr netmask) | |
717 | { | |
718 | struct netdev_dummy *netdev = netdev_dummy_cast(netdev_); | |
719 | ||
720 | ovs_mutex_lock(&netdev->mutex); | |
721 | netdev->address = address; | |
722 | netdev->netmask = netmask; | |
723 | ovs_mutex_unlock(&netdev->mutex); | |
724 | ||
725 | return 0; | |
726 | } | |
727 | ||
8073dd31 | 728 | static int |
b5d57fc8 | 729 | netdev_dummy_set_config(struct netdev *netdev_, const struct smap *args) |
614c4892 | 730 | { |
b5d57fc8 | 731 | struct netdev_dummy *netdev = netdev_dummy_cast(netdev_); |
55d87b06 | 732 | const char *pcap; |
614c4892 | 733 | |
86383816 | 734 | ovs_mutex_lock(&netdev->mutex); |
b5d57fc8 | 735 | netdev->ifindex = smap_get_int(args, "ifindex", -EOPNOTSUPP); |
eab5611a | 736 | |
631486bd | 737 | dummy_packet_conn_set_config(&netdev->conn, args); |
55d87b06 | 738 | |
f7791740 PS |
739 | if (netdev->rxq_pcap) { |
740 | fclose(netdev->rxq_pcap); | |
55d87b06 | 741 | } |
f7791740 | 742 | if (netdev->tx_pcap && netdev->tx_pcap != netdev->rxq_pcap) { |
55d87b06 BP |
743 | fclose(netdev->tx_pcap); |
744 | } | |
f7791740 | 745 | netdev->rxq_pcap = netdev->tx_pcap = NULL; |
55d87b06 BP |
746 | pcap = smap_get(args, "pcap"); |
747 | if (pcap) { | |
f7791740 | 748 | netdev->rxq_pcap = netdev->tx_pcap = ovs_pcap_open(pcap, "ab"); |
55d87b06 | 749 | } else { |
f7791740 | 750 | const char *rxq_pcap = smap_get(args, "rxq_pcap"); |
55d87b06 BP |
751 | const char *tx_pcap = smap_get(args, "tx_pcap"); |
752 | ||
f7791740 PS |
753 | if (rxq_pcap) { |
754 | netdev->rxq_pcap = ovs_pcap_open(rxq_pcap, "ab"); | |
55d87b06 BP |
755 | } |
756 | if (tx_pcap) { | |
50aa0364 | 757 | netdev->tx_pcap = ovs_pcap_open(tx_pcap, "ab"); |
55d87b06 BP |
758 | } |
759 | } | |
760 | ||
86383816 BP |
761 | ovs_mutex_unlock(&netdev->mutex); |
762 | ||
614c4892 BP |
763 | return 0; |
764 | } | |
765 | ||
f7791740 PS |
766 | static struct netdev_rxq * |
767 | netdev_dummy_rxq_alloc(void) | |
9dc63482 | 768 | { |
f7791740 | 769 | struct netdev_rxq_dummy *rx = xzalloc(sizeof *rx); |
9dc63482 BP |
770 | return &rx->up; |
771 | } | |
772 | ||
7b6b0ef4 | 773 | static int |
f7791740 | 774 | netdev_dummy_rxq_construct(struct netdev_rxq *rxq_) |
7b6b0ef4 | 775 | { |
f7791740 | 776 | struct netdev_rxq_dummy *rx = netdev_rxq_dummy_cast(rxq_); |
9dc63482 | 777 | struct netdev_dummy *netdev = netdev_dummy_cast(rx->up.netdev); |
796223f5 | 778 | |
86383816 | 779 | ovs_mutex_lock(&netdev->mutex); |
b5d57fc8 | 780 | list_push_back(&netdev->rxes, &rx->node); |
796223f5 | 781 | list_init(&rx->recv_queue); |
e34cfdd9 | 782 | rx->recv_queue_len = 0; |
98045eda | 783 | rx->seq = seq_create(); |
86383816 | 784 | ovs_mutex_unlock(&netdev->mutex); |
796223f5 | 785 | |
7b6b0ef4 BP |
786 | return 0; |
787 | } | |
788 | ||
9dc63482 | 789 | static void |
f7791740 | 790 | netdev_dummy_rxq_destruct(struct netdev_rxq *rxq_) |
9dc63482 | 791 | { |
f7791740 | 792 | struct netdev_rxq_dummy *rx = netdev_rxq_dummy_cast(rxq_); |
86383816 | 793 | struct netdev_dummy *netdev = netdev_dummy_cast(rx->up.netdev); |
9dc63482 | 794 | |
86383816 | 795 | ovs_mutex_lock(&netdev->mutex); |
9dc63482 BP |
796 | list_remove(&rx->node); |
797 | ofpbuf_list_delete(&rx->recv_queue); | |
86383816 | 798 | ovs_mutex_unlock(&netdev->mutex); |
98045eda | 799 | seq_destroy(rx->seq); |
9dc63482 BP |
800 | } |
801 | ||
802 | static void | |
f7791740 | 803 | netdev_dummy_rxq_dealloc(struct netdev_rxq *rxq_) |
9dc63482 | 804 | { |
f7791740 | 805 | struct netdev_rxq_dummy *rx = netdev_rxq_dummy_cast(rxq_); |
9dc63482 BP |
806 | |
807 | free(rx); | |
808 | } | |
809 | ||
7b6b0ef4 | 810 | static int |
91088554 DDP |
811 | netdev_dummy_rxq_recv(struct netdev_rxq *rxq_, struct dpif_packet **arr, |
812 | int *c) | |
fbac791a | 813 | { |
f7791740 | 814 | struct netdev_rxq_dummy *rx = netdev_rxq_dummy_cast(rxq_); |
86383816 | 815 | struct netdev_dummy *netdev = netdev_dummy_cast(rx->up.netdev); |
fbac791a BP |
816 | struct ofpbuf *packet; |
817 | ||
86383816 BP |
818 | ovs_mutex_lock(&netdev->mutex); |
819 | if (!list_is_empty(&rx->recv_queue)) { | |
820 | packet = ofpbuf_from_list(list_pop_front(&rx->recv_queue)); | |
821 | rx->recv_queue_len--; | |
822 | } else { | |
823 | packet = NULL; | |
824 | } | |
825 | ovs_mutex_unlock(&netdev->mutex); | |
826 | ||
827 | if (!packet) { | |
bfd3367b | 828 | return EAGAIN; |
fbac791a | 829 | } |
df1e5a3b PS |
830 | ovs_mutex_lock(&netdev->mutex); |
831 | netdev->stats.rx_packets++; | |
1f317cb5 | 832 | netdev->stats.rx_bytes += ofpbuf_size(packet); |
df1e5a3b | 833 | ovs_mutex_unlock(&netdev->mutex); |
fbac791a | 834 | |
df1e5a3b | 835 | dp_packet_pad(packet); |
91088554 DDP |
836 | |
837 | /* This performs a (sometimes unnecessary) copy */ | |
838 | arr[0] = dpif_packet_clone_from_ofpbuf(packet); | |
61a2647e | 839 | dpif_packet_set_dp_hash(arr[0], 0); |
91088554 | 840 | ofpbuf_delete(packet); |
df1e5a3b PS |
841 | *c = 1; |
842 | return 0; | |
fbac791a BP |
843 | } |
844 | ||
845 | static void | |
f7791740 | 846 | netdev_dummy_rxq_wait(struct netdev_rxq *rxq_) |
796223f5 | 847 | { |
f7791740 | 848 | struct netdev_rxq_dummy *rx = netdev_rxq_dummy_cast(rxq_); |
86383816 | 849 | struct netdev_dummy *netdev = netdev_dummy_cast(rx->up.netdev); |
98045eda | 850 | uint64_t seq = seq_read(rx->seq); |
86383816 BP |
851 | |
852 | ovs_mutex_lock(&netdev->mutex); | |
796223f5 | 853 | if (!list_is_empty(&rx->recv_queue)) { |
fbac791a | 854 | poll_immediate_wake(); |
98045eda BP |
855 | } else { |
856 | seq_wait(rx->seq, seq); | |
fbac791a | 857 | } |
86383816 | 858 | ovs_mutex_unlock(&netdev->mutex); |
fbac791a BP |
859 | } |
860 | ||
861 | static int | |
f7791740 | 862 | netdev_dummy_rxq_drain(struct netdev_rxq *rxq_) |
fbac791a | 863 | { |
f7791740 | 864 | struct netdev_rxq_dummy *rx = netdev_rxq_dummy_cast(rxq_); |
86383816 BP |
865 | struct netdev_dummy *netdev = netdev_dummy_cast(rx->up.netdev); |
866 | ||
867 | ovs_mutex_lock(&netdev->mutex); | |
796223f5 | 868 | ofpbuf_list_delete(&rx->recv_queue); |
e34cfdd9 | 869 | rx->recv_queue_len = 0; |
86383816 BP |
870 | ovs_mutex_unlock(&netdev->mutex); |
871 | ||
98045eda BP |
872 | seq_change(rx->seq); |
873 | ||
fbac791a | 874 | return 0; |
7b6b0ef4 BP |
875 | } |
876 | ||
02d5bfe3 | 877 | static int |
f00fa8cb AW |
878 | netdev_dummy_send(struct netdev *netdev, int qid OVS_UNUSED, |
879 | struct dpif_packet **pkts, int cnt, bool may_steal) | |
02d5bfe3 | 880 | { |
b5d57fc8 | 881 | struct netdev_dummy *dev = netdev_dummy_cast(netdev); |
f4fd623c DDP |
882 | int error = 0; |
883 | int i; | |
eab5611a | 884 | |
f4fd623c DDP |
885 | for (i = 0; i < cnt; i++) { |
886 | const void *buffer = ofpbuf_data(&pkts[i]->ofpbuf); | |
887 | size_t size = ofpbuf_size(&pkts[i]->ofpbuf); | |
eab5611a | 888 | |
f4fd623c DDP |
889 | if (size < ETH_HEADER_LEN) { |
890 | error = EMSGSIZE; | |
891 | break; | |
892 | } else { | |
893 | const struct eth_header *eth = buffer; | |
894 | int max_size; | |
36e2140d | 895 | |
f4fd623c DDP |
896 | ovs_mutex_lock(&dev->mutex); |
897 | max_size = dev->mtu + ETH_HEADER_LEN; | |
898 | ovs_mutex_unlock(&dev->mutex); | |
899 | ||
900 | if (eth->eth_type == htons(ETH_TYPE_VLAN)) { | |
901 | max_size += VLAN_HEADER_LEN; | |
902 | } | |
903 | if (size > max_size) { | |
904 | error = EMSGSIZE; | |
905 | break; | |
906 | } | |
eab5611a | 907 | } |
02d5bfe3 | 908 | |
f4fd623c DDP |
909 | ovs_mutex_lock(&dev->mutex); |
910 | dev->stats.tx_packets++; | |
911 | dev->stats.tx_bytes += size; | |
912 | ||
913 | dummy_packet_conn_send(&dev->conn, buffer, size); | |
02d5bfe3 | 914 | |
f4fd623c DDP |
915 | if (dev->tx_pcap) { |
916 | struct ofpbuf packet; | |
631486bd | 917 | |
f4fd623c DDP |
918 | ofpbuf_use_const(&packet, buffer, size); |
919 | ovs_pcap_write(dev->tx_pcap, &packet); | |
920 | fflush(dev->tx_pcap); | |
921 | } | |
55d87b06 | 922 | |
f4fd623c | 923 | ovs_mutex_unlock(&dev->mutex); |
55d87b06 BP |
924 | } |
925 | ||
40d26f04 | 926 | if (may_steal) { |
f4fd623c DDP |
927 | for (i = 0; i < cnt; i++) { |
928 | dpif_packet_delete(pkts[i]); | |
929 | } | |
40d26f04 | 930 | } |
eab5611a | 931 | |
f4fd623c | 932 | return error; |
02d5bfe3 BP |
933 | } |
934 | ||
614c4892 BP |
935 | static int |
936 | netdev_dummy_set_etheraddr(struct netdev *netdev, | |
937 | const uint8_t mac[ETH_ADDR_LEN]) | |
938 | { | |
b5d57fc8 | 939 | struct netdev_dummy *dev = netdev_dummy_cast(netdev); |
614c4892 | 940 | |
86383816 | 941 | ovs_mutex_lock(&dev->mutex); |
614c4892 BP |
942 | if (!eth_addr_equals(dev->hwaddr, mac)) { |
943 | memcpy(dev->hwaddr, mac, ETH_ADDR_LEN); | |
3e912ffc | 944 | netdev_change_seq_changed(netdev); |
614c4892 | 945 | } |
86383816 | 946 | ovs_mutex_unlock(&dev->mutex); |
614c4892 BP |
947 | |
948 | return 0; | |
949 | } | |
950 | ||
951 | static int | |
952 | netdev_dummy_get_etheraddr(const struct netdev *netdev, | |
953 | uint8_t mac[ETH_ADDR_LEN]) | |
954 | { | |
86383816 | 955 | struct netdev_dummy *dev = netdev_dummy_cast(netdev); |
614c4892 | 956 | |
86383816 | 957 | ovs_mutex_lock(&dev->mutex); |
614c4892 | 958 | memcpy(mac, dev->hwaddr, ETH_ADDR_LEN); |
86383816 BP |
959 | ovs_mutex_unlock(&dev->mutex); |
960 | ||
614c4892 BP |
961 | return 0; |
962 | } | |
963 | ||
964 | static int | |
965 | netdev_dummy_get_mtu(const struct netdev *netdev, int *mtup) | |
966 | { | |
86383816 | 967 | struct netdev_dummy *dev = netdev_dummy_cast(netdev); |
614c4892 | 968 | |
86383816 | 969 | ovs_mutex_lock(&dev->mutex); |
614c4892 | 970 | *mtup = dev->mtu; |
86383816 BP |
971 | ovs_mutex_unlock(&dev->mutex); |
972 | ||
614c4892 BP |
973 | return 0; |
974 | } | |
975 | ||
9b020780 PS |
976 | static int |
977 | netdev_dummy_set_mtu(const struct netdev *netdev, int mtu) | |
978 | { | |
b5d57fc8 | 979 | struct netdev_dummy *dev = netdev_dummy_cast(netdev); |
9b020780 | 980 | |
86383816 | 981 | ovs_mutex_lock(&dev->mutex); |
9b020780 | 982 | dev->mtu = mtu; |
86383816 BP |
983 | ovs_mutex_unlock(&dev->mutex); |
984 | ||
9b020780 PS |
985 | return 0; |
986 | } | |
987 | ||
614c4892 BP |
988 | static int |
989 | netdev_dummy_get_stats(const struct netdev *netdev, struct netdev_stats *stats) | |
990 | { | |
86383816 | 991 | struct netdev_dummy *dev = netdev_dummy_cast(netdev); |
614c4892 | 992 | |
86383816 | 993 | ovs_mutex_lock(&dev->mutex); |
614c4892 | 994 | *stats = dev->stats; |
86383816 BP |
995 | ovs_mutex_unlock(&dev->mutex); |
996 | ||
614c4892 BP |
997 | return 0; |
998 | } | |
999 | ||
8073dd31 NM |
1000 | static int |
1001 | netdev_dummy_get_ifindex(const struct netdev *netdev) | |
1002 | { | |
b5d57fc8 | 1003 | struct netdev_dummy *dev = netdev_dummy_cast(netdev); |
86383816 BP |
1004 | int ifindex; |
1005 | ||
1006 | ovs_mutex_lock(&dev->mutex); | |
1007 | ifindex = dev->ifindex; | |
1008 | ovs_mutex_unlock(&dev->mutex); | |
8073dd31 | 1009 | |
86383816 | 1010 | return ifindex; |
8073dd31 NM |
1011 | } |
1012 | ||
614c4892 | 1013 | static int |
86383816 BP |
1014 | netdev_dummy_update_flags__(struct netdev_dummy *netdev, |
1015 | enum netdev_flags off, enum netdev_flags on, | |
1016 | enum netdev_flags *old_flagsp) | |
1017 | OVS_REQUIRES(netdev->mutex) | |
614c4892 | 1018 | { |
614c4892 BP |
1019 | if ((off | on) & ~(NETDEV_UP | NETDEV_PROMISC)) { |
1020 | return EINVAL; | |
1021 | } | |
1022 | ||
b5d57fc8 BP |
1023 | *old_flagsp = netdev->flags; |
1024 | netdev->flags |= on; | |
1025 | netdev->flags &= ~off; | |
1026 | if (*old_flagsp != netdev->flags) { | |
3e912ffc | 1027 | netdev_change_seq_changed(&netdev->up); |
614c4892 | 1028 | } |
86383816 | 1029 | |
614c4892 BP |
1030 | return 0; |
1031 | } | |
1032 | ||
86383816 BP |
1033 | static int |
1034 | netdev_dummy_update_flags(struct netdev *netdev_, | |
1035 | enum netdev_flags off, enum netdev_flags on, | |
1036 | enum netdev_flags *old_flagsp) | |
1037 | { | |
1038 | struct netdev_dummy *netdev = netdev_dummy_cast(netdev_); | |
1039 | int error; | |
1040 | ||
1041 | ovs_mutex_lock(&netdev->mutex); | |
1042 | error = netdev_dummy_update_flags__(netdev, off, on, old_flagsp); | |
1043 | ovs_mutex_unlock(&netdev->mutex); | |
1044 | ||
1045 | return error; | |
1046 | } | |
614c4892 BP |
1047 | \f |
1048 | /* Helper functions. */ | |
1049 | ||
614c4892 BP |
1050 | static const struct netdev_class dummy_class = { |
1051 | "dummy", | |
1052 | NULL, /* init */ | |
eab5611a BP |
1053 | netdev_dummy_run, |
1054 | netdev_dummy_wait, | |
614c4892 | 1055 | |
9dc63482 BP |
1056 | netdev_dummy_alloc, |
1057 | netdev_dummy_construct, | |
1058 | netdev_dummy_destruct, | |
1059 | netdev_dummy_dealloc, | |
8073dd31 NM |
1060 | netdev_dummy_get_config, |
1061 | netdev_dummy_set_config, | |
f431bf7d | 1062 | NULL, /* get_tunnel_config */ |
a36de779 PS |
1063 | NULL, /* build header */ |
1064 | NULL, /* push header */ | |
1065 | NULL, /* pop header */ | |
7dec44fe | 1066 | NULL, /* get_numa_id */ |
5496878c | 1067 | NULL, /* set_multiq */ |
614c4892 | 1068 | |
02d5bfe3 | 1069 | netdev_dummy_send, /* send */ |
614c4892 BP |
1070 | NULL, /* send_wait */ |
1071 | ||
1072 | netdev_dummy_set_etheraddr, | |
1073 | netdev_dummy_get_etheraddr, | |
1074 | netdev_dummy_get_mtu, | |
9b020780 | 1075 | netdev_dummy_set_mtu, |
8073dd31 | 1076 | netdev_dummy_get_ifindex, |
614c4892 | 1077 | NULL, /* get_carrier */ |
65c3058c | 1078 | NULL, /* get_carrier_resets */ |
63331829 | 1079 | NULL, /* get_miimon */ |
614c4892 | 1080 | netdev_dummy_get_stats, |
614c4892 BP |
1081 | |
1082 | NULL, /* get_features */ | |
1083 | NULL, /* set_advertisements */ | |
614c4892 BP |
1084 | |
1085 | NULL, /* set_policing */ | |
1086 | NULL, /* get_qos_types */ | |
1087 | NULL, /* get_qos_capabilities */ | |
1088 | NULL, /* get_qos */ | |
1089 | NULL, /* set_qos */ | |
1090 | NULL, /* get_queue */ | |
1091 | NULL, /* set_queue */ | |
1092 | NULL, /* delete_queue */ | |
1093 | NULL, /* get_queue_stats */ | |
89454bf4 BP |
1094 | NULL, /* queue_dump_start */ |
1095 | NULL, /* queue_dump_next */ | |
1096 | NULL, /* queue_dump_done */ | |
614c4892 BP |
1097 | NULL, /* dump_queue_stats */ |
1098 | ||
a36de779 | 1099 | netdev_dummy_get_in4, /* get_in4 */ |
614c4892 BP |
1100 | NULL, /* set_in4 */ |
1101 | NULL, /* get_in6 */ | |
1102 | NULL, /* add_router */ | |
1103 | NULL, /* get_next_hop */ | |
275707c3 | 1104 | NULL, /* get_status */ |
614c4892 BP |
1105 | NULL, /* arp_lookup */ |
1106 | ||
1107 | netdev_dummy_update_flags, | |
1108 | ||
f7791740 PS |
1109 | netdev_dummy_rxq_alloc, |
1110 | netdev_dummy_rxq_construct, | |
1111 | netdev_dummy_rxq_destruct, | |
1112 | netdev_dummy_rxq_dealloc, | |
1113 | netdev_dummy_rxq_recv, | |
1114 | netdev_dummy_rxq_wait, | |
1115 | netdev_dummy_rxq_drain, | |
796223f5 BP |
1116 | }; |
1117 | ||
fbac791a BP |
1118 | static struct ofpbuf * |
1119 | eth_from_packet_or_flow(const char *s) | |
1120 | { | |
1121 | enum odp_key_fitness fitness; | |
1122 | struct ofpbuf *packet; | |
1123 | struct ofpbuf odp_key; | |
1124 | struct flow flow; | |
1125 | int error; | |
1126 | ||
1127 | if (!eth_from_hex(s, &packet)) { | |
1128 | return packet; | |
1129 | } | |
1130 | ||
1131 | /* Convert string to datapath key. | |
1132 | * | |
1133 | * It would actually be nicer to parse an OpenFlow-like flow key here, but | |
1134 | * the code for that currently calls exit() on parse error. We have to | |
1135 | * settle for parsing a datapath key for now. | |
1136 | */ | |
1137 | ofpbuf_init(&odp_key, 0); | |
e6cc0bab | 1138 | error = odp_flow_from_string(s, NULL, &odp_key, NULL); |
fbac791a BP |
1139 | if (error) { |
1140 | ofpbuf_uninit(&odp_key); | |
1141 | return NULL; | |
1142 | } | |
1143 | ||
1144 | /* Convert odp_key to flow. */ | |
1f317cb5 | 1145 | fitness = odp_flow_key_to_flow(ofpbuf_data(&odp_key), ofpbuf_size(&odp_key), &flow); |
fbac791a BP |
1146 | if (fitness == ODP_FIT_ERROR) { |
1147 | ofpbuf_uninit(&odp_key); | |
1148 | return NULL; | |
1149 | } | |
1150 | ||
1151 | packet = ofpbuf_new(0); | |
1152 | flow_compose(packet, &flow); | |
1153 | ||
1154 | ofpbuf_uninit(&odp_key); | |
1155 | return packet; | |
1156 | } | |
1157 | ||
323cc924 | 1158 | static void |
f7791740 | 1159 | netdev_dummy_queue_packet__(struct netdev_rxq_dummy *rx, struct ofpbuf *packet) |
2273ea5a | 1160 | { |
eab5611a BP |
1161 | list_push_back(&rx->recv_queue, &packet->list_node); |
1162 | rx->recv_queue_len++; | |
98045eda | 1163 | seq_change(rx->seq); |
eab5611a | 1164 | } |
2273ea5a | 1165 | |
eab5611a BP |
1166 | static void |
1167 | netdev_dummy_queue_packet(struct netdev_dummy *dummy, struct ofpbuf *packet) | |
55d87b06 | 1168 | OVS_REQUIRES(dummy->mutex) |
eab5611a | 1169 | { |
f7791740 | 1170 | struct netdev_rxq_dummy *rx, *prev; |
eab5611a | 1171 | |
f7791740 PS |
1172 | if (dummy->rxq_pcap) { |
1173 | ovs_pcap_write(dummy->rxq_pcap, packet); | |
1174 | fflush(dummy->rxq_pcap); | |
55d87b06 | 1175 | } |
eab5611a | 1176 | prev = NULL; |
2273ea5a BP |
1177 | LIST_FOR_EACH (rx, node, &dummy->rxes) { |
1178 | if (rx->recv_queue_len < NETDEV_DUMMY_MAX_QUEUE) { | |
eab5611a BP |
1179 | if (prev) { |
1180 | netdev_dummy_queue_packet__(prev, ofpbuf_clone(packet)); | |
1181 | } | |
1182 | prev = rx; | |
2273ea5a BP |
1183 | } |
1184 | } | |
eab5611a BP |
1185 | if (prev) { |
1186 | netdev_dummy_queue_packet__(prev, packet); | |
1187 | } else { | |
1188 | ofpbuf_delete(packet); | |
1189 | } | |
2273ea5a BP |
1190 | } |
1191 | ||
fbac791a BP |
1192 | static void |
1193 | netdev_dummy_receive(struct unixctl_conn *conn, | |
1194 | int argc, const char *argv[], void *aux OVS_UNUSED) | |
1195 | { | |
b5d57fc8 | 1196 | struct netdev_dummy *dummy_dev; |
86f1d032 | 1197 | struct netdev *netdev; |
fbac791a BP |
1198 | int i; |
1199 | ||
86f1d032 BP |
1200 | netdev = netdev_from_name(argv[1]); |
1201 | if (!netdev || !is_dummy_class(netdev->netdev_class)) { | |
bde9f75d | 1202 | unixctl_command_reply_error(conn, "no such dummy netdev"); |
86f1d032 | 1203 | goto exit; |
fbac791a | 1204 | } |
86f1d032 | 1205 | dummy_dev = netdev_dummy_cast(netdev); |
fbac791a | 1206 | |
fbac791a | 1207 | for (i = 2; i < argc; i++) { |
fbac791a BP |
1208 | struct ofpbuf *packet; |
1209 | ||
1210 | packet = eth_from_packet_or_flow(argv[i]); | |
1211 | if (!packet) { | |
bde9f75d | 1212 | unixctl_command_reply_error(conn, "bad packet syntax"); |
86f1d032 | 1213 | goto exit; |
fbac791a BP |
1214 | } |
1215 | ||
86383816 | 1216 | ovs_mutex_lock(&dummy_dev->mutex); |
eab5611a | 1217 | netdev_dummy_queue_packet(dummy_dev, packet); |
86383816 | 1218 | ovs_mutex_unlock(&dummy_dev->mutex); |
fbac791a BP |
1219 | } |
1220 | ||
323cc924 | 1221 | unixctl_command_reply(conn, NULL); |
86f1d032 BP |
1222 | |
1223 | exit: | |
1224 | netdev_close(netdev); | |
fbac791a BP |
1225 | } |
1226 | ||
95d4ec33 | 1227 | static void |
b5d57fc8 | 1228 | netdev_dummy_set_admin_state__(struct netdev_dummy *dev, bool admin_state) |
86383816 | 1229 | OVS_REQUIRES(dev->mutex) |
95d4ec33 EJ |
1230 | { |
1231 | enum netdev_flags old_flags; | |
1232 | ||
1233 | if (admin_state) { | |
86383816 | 1234 | netdev_dummy_update_flags__(dev, 0, NETDEV_UP, &old_flags); |
95d4ec33 | 1235 | } else { |
86383816 | 1236 | netdev_dummy_update_flags__(dev, NETDEV_UP, 0, &old_flags); |
95d4ec33 EJ |
1237 | } |
1238 | } | |
1239 | ||
1240 | static void | |
1241 | netdev_dummy_set_admin_state(struct unixctl_conn *conn, int argc, | |
1242 | const char *argv[], void *aux OVS_UNUSED) | |
1243 | { | |
1244 | bool up; | |
1245 | ||
1246 | if (!strcasecmp(argv[argc - 1], "up")) { | |
1247 | up = true; | |
1248 | } else if ( !strcasecmp(argv[argc - 1], "down")) { | |
1249 | up = false; | |
1250 | } else { | |
1251 | unixctl_command_reply_error(conn, "Invalid Admin State"); | |
1252 | return; | |
1253 | } | |
1254 | ||
1255 | if (argc > 2) { | |
86f1d032 BP |
1256 | struct netdev *netdev = netdev_from_name(argv[1]); |
1257 | if (netdev && is_dummy_class(netdev->netdev_class)) { | |
1258 | struct netdev_dummy *dummy_dev = netdev_dummy_cast(netdev); | |
95d4ec33 | 1259 | |
86383816 | 1260 | ovs_mutex_lock(&dummy_dev->mutex); |
b5d57fc8 | 1261 | netdev_dummy_set_admin_state__(dummy_dev, up); |
86383816 BP |
1262 | ovs_mutex_unlock(&dummy_dev->mutex); |
1263 | ||
86f1d032 | 1264 | netdev_close(netdev); |
95d4ec33 EJ |
1265 | } else { |
1266 | unixctl_command_reply_error(conn, "Unknown Dummy Interface"); | |
86f1d032 | 1267 | netdev_close(netdev); |
95d4ec33 EJ |
1268 | return; |
1269 | } | |
1270 | } else { | |
5e1de67f | 1271 | struct netdev_dummy *netdev; |
86383816 | 1272 | |
5e1de67f BP |
1273 | ovs_mutex_lock(&dummy_list_mutex); |
1274 | LIST_FOR_EACH (netdev, list_node, &dummy_list) { | |
86383816 BP |
1275 | ovs_mutex_lock(&netdev->mutex); |
1276 | netdev_dummy_set_admin_state__(netdev, up); | |
1277 | ovs_mutex_unlock(&netdev->mutex); | |
95d4ec33 | 1278 | } |
5e1de67f | 1279 | ovs_mutex_unlock(&dummy_list_mutex); |
95d4ec33 EJ |
1280 | } |
1281 | unixctl_command_reply(conn, "OK"); | |
1282 | } | |
1283 | ||
7d7fffe8 AZ |
1284 | static void |
1285 | display_conn_state__(struct ds *s, const char *name, | |
1286 | enum dummy_netdev_conn_state state) | |
1287 | { | |
1288 | ds_put_format(s, "%s: ", name); | |
1289 | ||
1290 | switch (state) { | |
1291 | case CONN_STATE_CONNECTED: | |
1292 | ds_put_cstr(s, "connected\n"); | |
1293 | break; | |
1294 | ||
1295 | case CONN_STATE_NOT_CONNECTED: | |
1296 | ds_put_cstr(s, "disconnected\n"); | |
1297 | break; | |
1298 | ||
1299 | case CONN_STATE_UNKNOWN: | |
1300 | default: | |
1301 | ds_put_cstr(s, "unknown\n"); | |
1302 | break; | |
1303 | }; | |
1304 | } | |
1305 | ||
1306 | static void | |
1307 | netdev_dummy_conn_state(struct unixctl_conn *conn, int argc, | |
1308 | const char *argv[], void *aux OVS_UNUSED) | |
1309 | { | |
1310 | enum dummy_netdev_conn_state state = CONN_STATE_UNKNOWN; | |
1311 | struct ds s; | |
1312 | ||
1313 | ds_init(&s); | |
1314 | ||
1315 | if (argc > 1) { | |
1316 | const char *dev_name = argv[1]; | |
1317 | struct netdev *netdev = netdev_from_name(dev_name); | |
1318 | ||
1319 | if (netdev && is_dummy_class(netdev->netdev_class)) { | |
1320 | struct netdev_dummy *dummy_dev = netdev_dummy_cast(netdev); | |
1321 | ||
1322 | ovs_mutex_lock(&dummy_dev->mutex); | |
1323 | state = dummy_netdev_get_conn_state(&dummy_dev->conn); | |
1324 | ovs_mutex_unlock(&dummy_dev->mutex); | |
1325 | ||
1326 | netdev_close(netdev); | |
1327 | } | |
1328 | display_conn_state__(&s, dev_name, state); | |
1329 | } else { | |
1330 | struct netdev_dummy *netdev; | |
1331 | ||
1332 | ovs_mutex_lock(&dummy_list_mutex); | |
1333 | LIST_FOR_EACH (netdev, list_node, &dummy_list) { | |
1334 | ovs_mutex_lock(&netdev->mutex); | |
1335 | state = dummy_netdev_get_conn_state(&netdev->conn); | |
1336 | ovs_mutex_unlock(&netdev->mutex); | |
1337 | if (state != CONN_STATE_UNKNOWN) { | |
1338 | display_conn_state__(&s, netdev->up.name, state); | |
1339 | } | |
1340 | } | |
1341 | ovs_mutex_unlock(&dummy_list_mutex); | |
1342 | } | |
1343 | ||
1344 | unixctl_command_reply(conn, ds_cstr(&s)); | |
1345 | ds_destroy(&s); | |
1346 | } | |
1347 | ||
a36de779 PS |
1348 | static void |
1349 | netdev_dummy_ip4addr(struct unixctl_conn *conn, int argc OVS_UNUSED, | |
1350 | const char *argv[], void *aux OVS_UNUSED) | |
1351 | { | |
1352 | struct netdev *netdev = netdev_from_name(argv[1]); | |
1353 | ||
1354 | if (netdev && is_dummy_class(netdev->netdev_class)) { | |
1355 | struct in_addr ip; | |
1356 | uint16_t plen; | |
1357 | ||
1358 | if (ovs_scan(argv[2], IP_SCAN_FMT"/%"SCNi16, | |
1359 | IP_SCAN_ARGS(&ip.s_addr), &plen)) { | |
1360 | struct in_addr mask; | |
1361 | ||
1362 | mask.s_addr = be32_prefix_mask(plen); | |
1363 | netdev_dummy_set_in4(netdev, ip, mask); | |
1364 | unixctl_command_reply(conn, "OK"); | |
1365 | } else { | |
1366 | unixctl_command_reply(conn, "Invalid parameters"); | |
1367 | } | |
1368 | ||
1369 | netdev_close(netdev); | |
1370 | } else { | |
1371 | unixctl_command_reply_error(conn, "Unknown Dummy Interface"); | |
1372 | netdev_close(netdev); | |
1373 | return; | |
1374 | } | |
1375 | ||
1376 | } | |
1377 | ||
614c4892 | 1378 | void |
0cbfe35d | 1379 | netdev_dummy_register(bool override) |
614c4892 | 1380 | { |
74467d5c | 1381 | unixctl_command_register("netdev-dummy/receive", "name packet|flow...", |
fbac791a | 1382 | 2, INT_MAX, netdev_dummy_receive, NULL); |
95d4ec33 EJ |
1383 | unixctl_command_register("netdev-dummy/set-admin-state", |
1384 | "[netdev] up|down", 1, 2, | |
1385 | netdev_dummy_set_admin_state, NULL); | |
7d7fffe8 AZ |
1386 | unixctl_command_register("netdev-dummy/conn-state", |
1387 | "[netdev]", 0, 1, | |
1388 | netdev_dummy_conn_state, NULL); | |
a36de779 PS |
1389 | unixctl_command_register("netdev-dummy/ip4addr", |
1390 | "[netdev] ipaddr/mask-prefix-len", 2, 2, | |
1391 | netdev_dummy_ip4addr, NULL); | |
1392 | ||
0cbfe35d BP |
1393 | |
1394 | if (override) { | |
1395 | struct sset types; | |
1396 | const char *type; | |
1397 | ||
1398 | sset_init(&types); | |
1399 | netdev_enumerate_types(&types); | |
1400 | SSET_FOR_EACH (type, &types) { | |
42d62291 YT |
1401 | if (!strcmp(type, "patch")) { |
1402 | continue; | |
1403 | } | |
0cbfe35d BP |
1404 | if (!netdev_unregister_provider(type)) { |
1405 | struct netdev_class *class; | |
86383816 | 1406 | int error; |
0cbfe35d | 1407 | |
86383816 | 1408 | class = xmemdup(&dummy_class, sizeof dummy_class); |
0cbfe35d | 1409 | class->type = xstrdup(type); |
86383816 BP |
1410 | error = netdev_register_provider(class); |
1411 | if (error) { | |
1412 | VLOG_ERR("%s: failed to register netdev provider (%s)", | |
1413 | type, ovs_strerror(error)); | |
1414 | free(CONST_CAST(char *, class->type)); | |
1415 | free(class); | |
1416 | } | |
0cbfe35d BP |
1417 | } |
1418 | } | |
1419 | sset_destroy(&types); | |
1420 | } | |
1421 | netdev_register_provider(&dummy_class); | |
c060c4cf | 1422 | |
7c54c27f | 1423 | netdev_vport_tunnel_register(); |
614c4892 | 1424 | } |