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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 | ||
fbac791a | 23 | #include "flow.h" |
614c4892 BP |
24 | #include "list.h" |
25 | #include "netdev-provider.h" | |
c060c4cf | 26 | #include "netdev-vport.h" |
fbac791a BP |
27 | #include "odp-util.h" |
28 | #include "ofp-print.h" | |
29 | #include "ofpbuf.h" | |
614c4892 | 30 | #include "packets.h" |
fbac791a | 31 | #include "poll-loop.h" |
614c4892 | 32 | #include "shash.h" |
0cbfe35d | 33 | #include "sset.h" |
eab5611a BP |
34 | #include "stream.h" |
35 | #include "unaligned.h" | |
fbac791a | 36 | #include "unixctl.h" |
614c4892 BP |
37 | #include "vlog.h" |
38 | ||
39 | VLOG_DEFINE_THIS_MODULE(netdev_dummy); | |
40 | ||
eab5611a BP |
41 | struct dummy_stream { |
42 | struct stream *stream; | |
43 | struct ofpbuf rxbuf; | |
44 | struct list txq; | |
45 | }; | |
46 | ||
5e1de67f BP |
47 | /* Protects 'dummy_list'. */ |
48 | static struct ovs_mutex dummy_list_mutex = OVS_MUTEX_INITIALIZER; | |
49 | ||
50 | /* Contains all 'struct dummy_dev's. */ | |
51 | static struct list dummy_list OVS_GUARDED_BY(dummy_list_mutex) | |
52 | = LIST_INITIALIZER(&dummy_list); | |
53 | ||
b5d57fc8 BP |
54 | struct netdev_dummy { |
55 | struct netdev up; | |
86383816 | 56 | |
5e1de67f BP |
57 | /* In dummy_list. */ |
58 | struct list list_node OVS_GUARDED_BY(dummy_list_mutex); | |
59 | ||
86383816 | 60 | /* Protects all members below. */ |
5e1de67f | 61 | struct ovs_mutex mutex OVS_ACQ_AFTER(dummy_list_mutex); |
86383816 | 62 | |
614c4892 BP |
63 | uint8_t hwaddr[ETH_ADDR_LEN]; |
64 | int mtu; | |
65 | struct netdev_stats stats; | |
66 | enum netdev_flags flags; | |
ac4d3bcb | 67 | unsigned int change_seq; |
8073dd31 | 68 | int ifindex; |
796223f5 | 69 | |
eab5611a BP |
70 | struct pstream *pstream; |
71 | struct dummy_stream *streams; | |
72 | size_t n_streams; | |
73 | ||
796223f5 | 74 | struct list rxes; /* List of child "netdev_rx_dummy"s. */ |
614c4892 BP |
75 | }; |
76 | ||
e34cfdd9 BP |
77 | /* Max 'recv_queue_len' in struct netdev_dummy. */ |
78 | #define NETDEV_DUMMY_MAX_QUEUE 100 | |
79 | ||
796223f5 BP |
80 | struct netdev_rx_dummy { |
81 | struct netdev_rx up; | |
b5d57fc8 | 82 | struct list node; /* In netdev_dummy's "rxes" list. */ |
fbac791a | 83 | struct list recv_queue; |
e34cfdd9 BP |
84 | int recv_queue_len; /* list_size(&recv_queue). */ |
85 | bool listening; | |
614c4892 BP |
86 | }; |
87 | ||
95d4ec33 | 88 | static unixctl_cb_func netdev_dummy_set_admin_state; |
9dc63482 | 89 | static int netdev_dummy_construct(struct netdev *); |
86383816 BP |
90 | static void netdev_dummy_poll_notify(struct netdev_dummy *netdev) |
91 | OVS_REQUIRES(netdev->mutex); | |
eab5611a BP |
92 | static void netdev_dummy_queue_packet(struct netdev_dummy *, struct ofpbuf *); |
93 | ||
94 | static void dummy_stream_close(struct dummy_stream *); | |
614c4892 BP |
95 | |
96 | static bool | |
97 | is_dummy_class(const struct netdev_class *class) | |
98 | { | |
9dc63482 | 99 | return class->construct == netdev_dummy_construct; |
614c4892 BP |
100 | } |
101 | ||
614c4892 BP |
102 | static struct netdev_dummy * |
103 | netdev_dummy_cast(const struct netdev *netdev) | |
104 | { | |
b5d57fc8 | 105 | ovs_assert(is_dummy_class(netdev_get_class(netdev))); |
180c6d0b | 106 | return CONTAINER_OF(netdev, struct netdev_dummy, up); |
614c4892 BP |
107 | } |
108 | ||
796223f5 BP |
109 | static struct netdev_rx_dummy * |
110 | netdev_rx_dummy_cast(const struct netdev_rx *rx) | |
111 | { | |
9dc63482 | 112 | ovs_assert(is_dummy_class(netdev_get_class(rx->netdev))); |
796223f5 BP |
113 | return CONTAINER_OF(rx, struct netdev_rx_dummy, up); |
114 | } | |
115 | ||
eab5611a BP |
116 | static void |
117 | netdev_dummy_run(void) | |
118 | { | |
5e1de67f | 119 | struct netdev_dummy *dev; |
eab5611a | 120 | |
5e1de67f BP |
121 | ovs_mutex_lock(&dummy_list_mutex); |
122 | LIST_FOR_EACH (dev, list_node, &dummy_list) { | |
eab5611a BP |
123 | size_t i; |
124 | ||
86383816 BP |
125 | ovs_mutex_lock(&dev->mutex); |
126 | ||
eab5611a BP |
127 | if (dev->pstream) { |
128 | struct stream *new_stream; | |
129 | int error; | |
130 | ||
131 | error = pstream_accept(dev->pstream, &new_stream); | |
132 | if (!error) { | |
133 | struct dummy_stream *s; | |
134 | ||
135 | dev->streams = xrealloc(dev->streams, | |
136 | ((dev->n_streams + 1) | |
137 | * sizeof *dev->streams)); | |
138 | s = &dev->streams[dev->n_streams++]; | |
139 | s->stream = new_stream; | |
140 | ofpbuf_init(&s->rxbuf, 2048); | |
141 | list_init(&s->txq); | |
142 | } else if (error != EAGAIN) { | |
143 | VLOG_WARN("%s: accept failed (%s)", | |
10a89ef0 | 144 | pstream_get_name(dev->pstream), ovs_strerror(error)); |
eab5611a BP |
145 | pstream_close(dev->pstream); |
146 | dev->pstream = NULL; | |
147 | } | |
148 | } | |
149 | ||
150 | for (i = 0; i < dev->n_streams; i++) { | |
151 | struct dummy_stream *s = &dev->streams[i]; | |
152 | int error = 0; | |
153 | size_t n; | |
154 | ||
155 | stream_run(s->stream); | |
156 | ||
157 | if (!list_is_empty(&s->txq)) { | |
158 | struct ofpbuf *txbuf; | |
159 | int retval; | |
160 | ||
161 | txbuf = ofpbuf_from_list(list_front(&s->txq)); | |
162 | retval = stream_send(s->stream, txbuf->data, txbuf->size); | |
163 | if (retval > 0) { | |
164 | ofpbuf_pull(txbuf, retval); | |
165 | if (!txbuf->size) { | |
166 | list_remove(&txbuf->list_node); | |
167 | ofpbuf_delete(txbuf); | |
168 | } | |
169 | } else if (retval != -EAGAIN) { | |
170 | error = -retval; | |
171 | } | |
172 | } | |
173 | ||
174 | if (!error) { | |
175 | if (s->rxbuf.size < 2) { | |
176 | n = 2 - s->rxbuf.size; | |
177 | } else { | |
178 | uint16_t frame_len; | |
179 | ||
180 | frame_len = ntohs(get_unaligned_be16(s->rxbuf.data)); | |
181 | if (frame_len < ETH_HEADER_LEN) { | |
182 | error = EPROTO; | |
183 | n = 0; | |
184 | } else { | |
185 | n = (2 + frame_len) - s->rxbuf.size; | |
186 | } | |
187 | } | |
188 | } | |
189 | if (!error) { | |
190 | int retval; | |
191 | ||
192 | ofpbuf_prealloc_tailroom(&s->rxbuf, n); | |
193 | retval = stream_recv(s->stream, ofpbuf_tail(&s->rxbuf), n); | |
194 | if (retval > 0) { | |
195 | s->rxbuf.size += retval; | |
196 | if (retval == n && s->rxbuf.size > 2) { | |
197 | ofpbuf_pull(&s->rxbuf, 2); | |
198 | netdev_dummy_queue_packet(dev, | |
199 | ofpbuf_clone(&s->rxbuf)); | |
200 | ofpbuf_clear(&s->rxbuf); | |
201 | } | |
202 | } else if (retval != -EAGAIN) { | |
203 | error = (retval < 0 ? -retval | |
204 | : s->rxbuf.size ? EPROTO | |
205 | : EOF); | |
206 | } | |
207 | } | |
208 | ||
209 | if (error) { | |
210 | VLOG_DBG("%s: closing connection (%s)", | |
211 | stream_get_name(s->stream), | |
212 | ovs_retval_to_string(error)); | |
213 | dummy_stream_close(&dev->streams[i]); | |
214 | dev->streams[i] = dev->streams[--dev->n_streams]; | |
215 | } | |
216 | } | |
86f1d032 | 217 | |
86383816 | 218 | ovs_mutex_unlock(&dev->mutex); |
eab5611a | 219 | } |
5e1de67f | 220 | ovs_mutex_unlock(&dummy_list_mutex); |
eab5611a BP |
221 | } |
222 | ||
223 | static void | |
224 | dummy_stream_close(struct dummy_stream *s) | |
225 | { | |
226 | stream_close(s->stream); | |
227 | ofpbuf_uninit(&s->rxbuf); | |
228 | ofpbuf_list_delete(&s->txq); | |
229 | } | |
230 | ||
231 | static void | |
232 | netdev_dummy_wait(void) | |
233 | { | |
5e1de67f | 234 | struct netdev_dummy *dev; |
eab5611a | 235 | |
5e1de67f BP |
236 | ovs_mutex_lock(&dummy_list_mutex); |
237 | LIST_FOR_EACH (dev, list_node, &dummy_list) { | |
eab5611a BP |
238 | size_t i; |
239 | ||
86383816 | 240 | ovs_mutex_lock(&dev->mutex); |
eab5611a BP |
241 | if (dev->pstream) { |
242 | pstream_wait(dev->pstream); | |
243 | } | |
244 | for (i = 0; i < dev->n_streams; i++) { | |
245 | struct dummy_stream *s = &dev->streams[i]; | |
246 | ||
247 | stream_run_wait(s->stream); | |
248 | if (!list_is_empty(&s->txq)) { | |
249 | stream_send_wait(s->stream); | |
250 | } | |
251 | stream_recv_wait(s->stream); | |
252 | } | |
86383816 | 253 | ovs_mutex_unlock(&dev->mutex); |
eab5611a | 254 | } |
5e1de67f | 255 | ovs_mutex_unlock(&dummy_list_mutex); |
eab5611a BP |
256 | } |
257 | ||
9dc63482 BP |
258 | static struct netdev * |
259 | netdev_dummy_alloc(void) | |
260 | { | |
261 | struct netdev_dummy *netdev = xzalloc(sizeof *netdev); | |
262 | return &netdev->up; | |
263 | } | |
264 | ||
614c4892 | 265 | static int |
9dc63482 | 266 | netdev_dummy_construct(struct netdev *netdev_) |
614c4892 | 267 | { |
97be1538 | 268 | static atomic_uint next_n = ATOMIC_VAR_INIT(0xaa550000); |
9dc63482 | 269 | struct netdev_dummy *netdev = netdev_dummy_cast(netdev_); |
01cdb3a1 BP |
270 | unsigned int n; |
271 | ||
97be1538 | 272 | atomic_add(&next_n, 1, &n); |
86383816 BP |
273 | |
274 | ovs_mutex_init(&netdev->mutex, PTHREAD_MUTEX_NORMAL); | |
b5d57fc8 BP |
275 | netdev->hwaddr[0] = 0xaa; |
276 | netdev->hwaddr[1] = 0x55; | |
277 | netdev->hwaddr[2] = n >> 24; | |
278 | netdev->hwaddr[3] = n >> 16; | |
279 | netdev->hwaddr[4] = n >> 8; | |
280 | netdev->hwaddr[5] = n; | |
281 | netdev->mtu = 1500; | |
282 | netdev->flags = 0; | |
283 | netdev->change_seq = 1; | |
284 | netdev->ifindex = -EOPNOTSUPP; | |
eab5611a BP |
285 | |
286 | netdev->pstream = NULL; | |
287 | netdev->streams = NULL; | |
288 | netdev->n_streams = 0; | |
289 | ||
b5d57fc8 BP |
290 | list_init(&netdev->rxes); |
291 | ||
5e1de67f BP |
292 | ovs_mutex_lock(&dummy_list_mutex); |
293 | list_push_back(&dummy_list, &netdev->list_node); | |
294 | ovs_mutex_unlock(&dummy_list_mutex); | |
295 | ||
614c4892 BP |
296 | return 0; |
297 | } | |
298 | ||
299 | static void | |
9dc63482 | 300 | netdev_dummy_destruct(struct netdev *netdev_) |
614c4892 | 301 | { |
b5d57fc8 | 302 | struct netdev_dummy *netdev = netdev_dummy_cast(netdev_); |
eab5611a | 303 | size_t i; |
614c4892 | 304 | |
5e1de67f BP |
305 | ovs_mutex_lock(&dummy_list_mutex); |
306 | list_remove(&netdev->list_node); | |
307 | ovs_mutex_unlock(&dummy_list_mutex); | |
308 | ||
eab5611a BP |
309 | pstream_close(netdev->pstream); |
310 | for (i = 0; i < netdev->n_streams; i++) { | |
311 | dummy_stream_close(&netdev->streams[i]); | |
312 | } | |
313 | free(netdev->streams); | |
86383816 | 314 | ovs_mutex_destroy(&netdev->mutex); |
9dc63482 BP |
315 | } |
316 | ||
317 | static void | |
318 | netdev_dummy_dealloc(struct netdev *netdev_) | |
319 | { | |
320 | struct netdev_dummy *netdev = netdev_dummy_cast(netdev_); | |
321 | ||
b5d57fc8 | 322 | free(netdev); |
614c4892 BP |
323 | } |
324 | ||
8073dd31 | 325 | static int |
b5d57fc8 | 326 | netdev_dummy_get_config(const struct netdev *netdev_, struct smap *args) |
8073dd31 | 327 | { |
b5d57fc8 | 328 | struct netdev_dummy *netdev = netdev_dummy_cast(netdev_); |
8073dd31 | 329 | |
5a9bf514 | 330 | ovs_mutex_lock(&netdev->mutex); |
b5d57fc8 BP |
331 | if (netdev->ifindex >= 0) { |
332 | smap_add_format(args, "ifindex", "%d", netdev->ifindex); | |
8073dd31 | 333 | } |
eab5611a BP |
334 | if (netdev->pstream) { |
335 | smap_add(args, "pstream", pstream_get_name(netdev->pstream)); | |
336 | } | |
5a9bf514 BP |
337 | ovs_mutex_unlock(&netdev->mutex); |
338 | ||
8073dd31 NM |
339 | return 0; |
340 | } | |
341 | ||
342 | static int | |
b5d57fc8 | 343 | netdev_dummy_set_config(struct netdev *netdev_, const struct smap *args) |
614c4892 | 344 | { |
b5d57fc8 | 345 | struct netdev_dummy *netdev = netdev_dummy_cast(netdev_); |
eab5611a | 346 | const char *pstream; |
614c4892 | 347 | |
86383816 | 348 | ovs_mutex_lock(&netdev->mutex); |
b5d57fc8 | 349 | netdev->ifindex = smap_get_int(args, "ifindex", -EOPNOTSUPP); |
eab5611a BP |
350 | |
351 | pstream = smap_get(args, "pstream"); | |
352 | if (!pstream | |
353 | || !netdev->pstream | |
354 | || strcmp(pstream_get_name(netdev->pstream), pstream)) { | |
355 | pstream_close(netdev->pstream); | |
356 | netdev->pstream = NULL; | |
357 | ||
358 | if (pstream) { | |
359 | int error; | |
360 | ||
361 | error = pstream_open(pstream, &netdev->pstream, DSCP_DEFAULT); | |
362 | if (error) { | |
10a89ef0 BP |
363 | VLOG_WARN("%s: open failed (%s)", |
364 | pstream, ovs_strerror(error)); | |
eab5611a BP |
365 | } |
366 | } | |
367 | } | |
86383816 BP |
368 | ovs_mutex_unlock(&netdev->mutex); |
369 | ||
614c4892 BP |
370 | return 0; |
371 | } | |
372 | ||
9dc63482 BP |
373 | static struct netdev_rx * |
374 | netdev_dummy_rx_alloc(void) | |
375 | { | |
376 | struct netdev_rx_dummy *rx = xzalloc(sizeof *rx); | |
377 | return &rx->up; | |
378 | } | |
379 | ||
7b6b0ef4 | 380 | static int |
9dc63482 | 381 | netdev_dummy_rx_construct(struct netdev_rx *rx_) |
7b6b0ef4 | 382 | { |
9dc63482 BP |
383 | struct netdev_rx_dummy *rx = netdev_rx_dummy_cast(rx_); |
384 | struct netdev_dummy *netdev = netdev_dummy_cast(rx->up.netdev); | |
796223f5 | 385 | |
86383816 | 386 | ovs_mutex_lock(&netdev->mutex); |
b5d57fc8 | 387 | list_push_back(&netdev->rxes, &rx->node); |
796223f5 | 388 | list_init(&rx->recv_queue); |
e34cfdd9 | 389 | rx->recv_queue_len = 0; |
86383816 | 390 | ovs_mutex_unlock(&netdev->mutex); |
796223f5 | 391 | |
7b6b0ef4 BP |
392 | return 0; |
393 | } | |
394 | ||
9dc63482 BP |
395 | static void |
396 | netdev_dummy_rx_destruct(struct netdev_rx *rx_) | |
397 | { | |
398 | struct netdev_rx_dummy *rx = netdev_rx_dummy_cast(rx_); | |
86383816 | 399 | struct netdev_dummy *netdev = netdev_dummy_cast(rx->up.netdev); |
9dc63482 | 400 | |
86383816 | 401 | ovs_mutex_lock(&netdev->mutex); |
9dc63482 BP |
402 | list_remove(&rx->node); |
403 | ofpbuf_list_delete(&rx->recv_queue); | |
86383816 | 404 | ovs_mutex_unlock(&netdev->mutex); |
9dc63482 BP |
405 | } |
406 | ||
407 | static void | |
408 | netdev_dummy_rx_dealloc(struct netdev_rx *rx_) | |
409 | { | |
410 | struct netdev_rx_dummy *rx = netdev_rx_dummy_cast(rx_); | |
411 | ||
412 | free(rx); | |
413 | } | |
414 | ||
7b6b0ef4 | 415 | static int |
9dc63482 | 416 | netdev_dummy_rx_recv(struct netdev_rx *rx_, void *buffer, size_t size) |
fbac791a | 417 | { |
796223f5 | 418 | struct netdev_rx_dummy *rx = netdev_rx_dummy_cast(rx_); |
86383816 | 419 | struct netdev_dummy *netdev = netdev_dummy_cast(rx->up.netdev); |
fbac791a | 420 | struct ofpbuf *packet; |
7d6ce2d1 | 421 | int retval; |
fbac791a | 422 | |
86383816 BP |
423 | ovs_mutex_lock(&netdev->mutex); |
424 | if (!list_is_empty(&rx->recv_queue)) { | |
425 | packet = ofpbuf_from_list(list_pop_front(&rx->recv_queue)); | |
426 | rx->recv_queue_len--; | |
427 | } else { | |
428 | packet = NULL; | |
429 | } | |
430 | ovs_mutex_unlock(&netdev->mutex); | |
431 | ||
432 | if (!packet) { | |
fbac791a BP |
433 | return -EAGAIN; |
434 | } | |
435 | ||
7d6ce2d1 BP |
436 | if (packet->size <= size) { |
437 | memcpy(buffer, packet->data, packet->size); | |
438 | retval = packet->size; | |
439 | } else { | |
440 | retval = -EMSGSIZE; | |
fbac791a | 441 | } |
fbac791a BP |
442 | ofpbuf_delete(packet); |
443 | ||
7d6ce2d1 | 444 | return retval; |
fbac791a BP |
445 | } |
446 | ||
447 | static void | |
9dc63482 | 448 | netdev_dummy_rx_wait(struct netdev_rx *rx_) |
796223f5 BP |
449 | { |
450 | struct netdev_rx_dummy *rx = netdev_rx_dummy_cast(rx_); | |
86383816 BP |
451 | struct netdev_dummy *netdev = netdev_dummy_cast(rx->up.netdev); |
452 | ||
453 | ovs_mutex_lock(&netdev->mutex); | |
796223f5 | 454 | if (!list_is_empty(&rx->recv_queue)) { |
fbac791a BP |
455 | poll_immediate_wake(); |
456 | } | |
86383816 | 457 | ovs_mutex_unlock(&netdev->mutex); |
fbac791a BP |
458 | } |
459 | ||
460 | static int | |
9dc63482 | 461 | netdev_dummy_rx_drain(struct netdev_rx *rx_) |
fbac791a | 462 | { |
796223f5 | 463 | struct netdev_rx_dummy *rx = netdev_rx_dummy_cast(rx_); |
86383816 BP |
464 | struct netdev_dummy *netdev = netdev_dummy_cast(rx->up.netdev); |
465 | ||
466 | ovs_mutex_lock(&netdev->mutex); | |
796223f5 | 467 | ofpbuf_list_delete(&rx->recv_queue); |
e34cfdd9 | 468 | rx->recv_queue_len = 0; |
86383816 BP |
469 | ovs_mutex_unlock(&netdev->mutex); |
470 | ||
fbac791a | 471 | return 0; |
7b6b0ef4 BP |
472 | } |
473 | ||
02d5bfe3 | 474 | static int |
eab5611a | 475 | netdev_dummy_send(struct netdev *netdev, const void *buffer, size_t size) |
02d5bfe3 | 476 | { |
b5d57fc8 | 477 | struct netdev_dummy *dev = netdev_dummy_cast(netdev); |
eab5611a BP |
478 | size_t i; |
479 | ||
480 | if (size < ETH_HEADER_LEN) { | |
481 | return EMSGSIZE; | |
482 | } else { | |
483 | const struct eth_header *eth = buffer; | |
484 | int max_size; | |
485 | ||
486 | max_size = dev->mtu + ETH_HEADER_LEN; | |
487 | if (eth->eth_type == htons(ETH_TYPE_VLAN)) { | |
488 | max_size += VLAN_HEADER_LEN; | |
489 | } | |
490 | if (size > max_size) { | |
491 | return EMSGSIZE; | |
492 | } | |
493 | } | |
02d5bfe3 | 494 | |
86383816 | 495 | ovs_mutex_lock(&dev->mutex); |
02d5bfe3 BP |
496 | dev->stats.tx_packets++; |
497 | dev->stats.tx_bytes += size; | |
498 | ||
eab5611a BP |
499 | for (i = 0; i < dev->n_streams; i++) { |
500 | struct dummy_stream *s = &dev->streams[i]; | |
501 | ||
502 | if (list_size(&s->txq) < NETDEV_DUMMY_MAX_QUEUE) { | |
503 | struct ofpbuf *b; | |
504 | ||
505 | b = ofpbuf_clone_data_with_headroom(buffer, size, 2); | |
506 | put_unaligned_be16(ofpbuf_push_uninit(b, 2), htons(size)); | |
507 | list_push_back(&s->txq, &b->list_node); | |
508 | } | |
509 | } | |
86383816 | 510 | ovs_mutex_unlock(&dev->mutex); |
eab5611a | 511 | |
02d5bfe3 BP |
512 | return 0; |
513 | } | |
514 | ||
614c4892 BP |
515 | static int |
516 | netdev_dummy_set_etheraddr(struct netdev *netdev, | |
517 | const uint8_t mac[ETH_ADDR_LEN]) | |
518 | { | |
b5d57fc8 | 519 | struct netdev_dummy *dev = netdev_dummy_cast(netdev); |
614c4892 | 520 | |
86383816 | 521 | ovs_mutex_lock(&dev->mutex); |
614c4892 BP |
522 | if (!eth_addr_equals(dev->hwaddr, mac)) { |
523 | memcpy(dev->hwaddr, mac, ETH_ADDR_LEN); | |
b5d57fc8 | 524 | netdev_dummy_poll_notify(dev); |
614c4892 | 525 | } |
86383816 | 526 | ovs_mutex_unlock(&dev->mutex); |
614c4892 BP |
527 | |
528 | return 0; | |
529 | } | |
530 | ||
531 | static int | |
532 | netdev_dummy_get_etheraddr(const struct netdev *netdev, | |
533 | uint8_t mac[ETH_ADDR_LEN]) | |
534 | { | |
86383816 | 535 | struct netdev_dummy *dev = netdev_dummy_cast(netdev); |
614c4892 | 536 | |
86383816 | 537 | ovs_mutex_lock(&dev->mutex); |
614c4892 | 538 | memcpy(mac, dev->hwaddr, ETH_ADDR_LEN); |
86383816 BP |
539 | ovs_mutex_unlock(&dev->mutex); |
540 | ||
614c4892 BP |
541 | return 0; |
542 | } | |
543 | ||
544 | static int | |
545 | netdev_dummy_get_mtu(const struct netdev *netdev, int *mtup) | |
546 | { | |
86383816 | 547 | struct netdev_dummy *dev = netdev_dummy_cast(netdev); |
614c4892 | 548 | |
86383816 | 549 | ovs_mutex_lock(&dev->mutex); |
614c4892 | 550 | *mtup = dev->mtu; |
86383816 BP |
551 | ovs_mutex_unlock(&dev->mutex); |
552 | ||
614c4892 BP |
553 | return 0; |
554 | } | |
555 | ||
9b020780 PS |
556 | static int |
557 | netdev_dummy_set_mtu(const struct netdev *netdev, int mtu) | |
558 | { | |
b5d57fc8 | 559 | struct netdev_dummy *dev = netdev_dummy_cast(netdev); |
9b020780 | 560 | |
86383816 | 561 | ovs_mutex_lock(&dev->mutex); |
9b020780 | 562 | dev->mtu = mtu; |
86383816 BP |
563 | ovs_mutex_unlock(&dev->mutex); |
564 | ||
9b020780 PS |
565 | return 0; |
566 | } | |
567 | ||
614c4892 BP |
568 | static int |
569 | netdev_dummy_get_stats(const struct netdev *netdev, struct netdev_stats *stats) | |
570 | { | |
86383816 | 571 | struct netdev_dummy *dev = netdev_dummy_cast(netdev); |
614c4892 | 572 | |
86383816 | 573 | ovs_mutex_lock(&dev->mutex); |
614c4892 | 574 | *stats = dev->stats; |
86383816 BP |
575 | ovs_mutex_unlock(&dev->mutex); |
576 | ||
614c4892 BP |
577 | return 0; |
578 | } | |
579 | ||
580 | static int | |
581 | netdev_dummy_set_stats(struct netdev *netdev, const struct netdev_stats *stats) | |
582 | { | |
b5d57fc8 | 583 | struct netdev_dummy *dev = netdev_dummy_cast(netdev); |
614c4892 | 584 | |
86383816 | 585 | ovs_mutex_lock(&dev->mutex); |
614c4892 | 586 | dev->stats = *stats; |
86383816 BP |
587 | ovs_mutex_unlock(&dev->mutex); |
588 | ||
614c4892 BP |
589 | return 0; |
590 | } | |
591 | ||
8073dd31 NM |
592 | static int |
593 | netdev_dummy_get_ifindex(const struct netdev *netdev) | |
594 | { | |
b5d57fc8 | 595 | struct netdev_dummy *dev = netdev_dummy_cast(netdev); |
86383816 BP |
596 | int ifindex; |
597 | ||
598 | ovs_mutex_lock(&dev->mutex); | |
599 | ifindex = dev->ifindex; | |
600 | ovs_mutex_unlock(&dev->mutex); | |
8073dd31 | 601 | |
86383816 | 602 | return ifindex; |
8073dd31 NM |
603 | } |
604 | ||
614c4892 | 605 | static int |
86383816 BP |
606 | netdev_dummy_update_flags__(struct netdev_dummy *netdev, |
607 | enum netdev_flags off, enum netdev_flags on, | |
608 | enum netdev_flags *old_flagsp) | |
609 | OVS_REQUIRES(netdev->mutex) | |
614c4892 | 610 | { |
614c4892 BP |
611 | if ((off | on) & ~(NETDEV_UP | NETDEV_PROMISC)) { |
612 | return EINVAL; | |
613 | } | |
614 | ||
b5d57fc8 BP |
615 | *old_flagsp = netdev->flags; |
616 | netdev->flags |= on; | |
617 | netdev->flags &= ~off; | |
618 | if (*old_flagsp != netdev->flags) { | |
619 | netdev_dummy_poll_notify(netdev); | |
614c4892 | 620 | } |
86383816 | 621 | |
614c4892 BP |
622 | return 0; |
623 | } | |
624 | ||
86383816 BP |
625 | static int |
626 | netdev_dummy_update_flags(struct netdev *netdev_, | |
627 | enum netdev_flags off, enum netdev_flags on, | |
628 | enum netdev_flags *old_flagsp) | |
629 | { | |
630 | struct netdev_dummy *netdev = netdev_dummy_cast(netdev_); | |
631 | int error; | |
632 | ||
633 | ovs_mutex_lock(&netdev->mutex); | |
634 | error = netdev_dummy_update_flags__(netdev, off, on, old_flagsp); | |
635 | ovs_mutex_unlock(&netdev->mutex); | |
636 | ||
637 | return error; | |
638 | } | |
639 | ||
ac4d3bcb | 640 | static unsigned int |
86383816 | 641 | netdev_dummy_change_seq(const struct netdev *netdev_) |
ac4d3bcb | 642 | { |
86383816 BP |
643 | struct netdev_dummy *netdev = netdev_dummy_cast(netdev_); |
644 | unsigned int change_seq; | |
645 | ||
646 | ovs_mutex_lock(&netdev->mutex); | |
647 | change_seq = netdev->change_seq; | |
648 | ovs_mutex_unlock(&netdev->mutex); | |
649 | ||
650 | return change_seq; | |
ac4d3bcb | 651 | } |
614c4892 BP |
652 | \f |
653 | /* Helper functions. */ | |
654 | ||
655 | static void | |
b5d57fc8 | 656 | netdev_dummy_poll_notify(struct netdev_dummy *dev) |
614c4892 | 657 | { |
ac4d3bcb EJ |
658 | dev->change_seq++; |
659 | if (!dev->change_seq) { | |
660 | dev->change_seq++; | |
661 | } | |
614c4892 BP |
662 | } |
663 | ||
664 | static const struct netdev_class dummy_class = { | |
665 | "dummy", | |
666 | NULL, /* init */ | |
eab5611a BP |
667 | netdev_dummy_run, |
668 | netdev_dummy_wait, | |
614c4892 | 669 | |
9dc63482 BP |
670 | netdev_dummy_alloc, |
671 | netdev_dummy_construct, | |
672 | netdev_dummy_destruct, | |
673 | netdev_dummy_dealloc, | |
8073dd31 NM |
674 | netdev_dummy_get_config, |
675 | netdev_dummy_set_config, | |
f431bf7d | 676 | NULL, /* get_tunnel_config */ |
614c4892 | 677 | |
02d5bfe3 | 678 | netdev_dummy_send, /* send */ |
614c4892 BP |
679 | NULL, /* send_wait */ |
680 | ||
681 | netdev_dummy_set_etheraddr, | |
682 | netdev_dummy_get_etheraddr, | |
683 | netdev_dummy_get_mtu, | |
9b020780 | 684 | netdev_dummy_set_mtu, |
8073dd31 | 685 | netdev_dummy_get_ifindex, |
614c4892 | 686 | NULL, /* get_carrier */ |
65c3058c | 687 | NULL, /* get_carrier_resets */ |
63331829 | 688 | NULL, /* get_miimon */ |
614c4892 BP |
689 | netdev_dummy_get_stats, |
690 | netdev_dummy_set_stats, | |
691 | ||
692 | NULL, /* get_features */ | |
693 | NULL, /* set_advertisements */ | |
614c4892 BP |
694 | |
695 | NULL, /* set_policing */ | |
696 | NULL, /* get_qos_types */ | |
697 | NULL, /* get_qos_capabilities */ | |
698 | NULL, /* get_qos */ | |
699 | NULL, /* set_qos */ | |
700 | NULL, /* get_queue */ | |
701 | NULL, /* set_queue */ | |
702 | NULL, /* delete_queue */ | |
703 | NULL, /* get_queue_stats */ | |
704 | NULL, /* dump_queues */ | |
705 | NULL, /* dump_queue_stats */ | |
706 | ||
707 | NULL, /* get_in4 */ | |
708 | NULL, /* set_in4 */ | |
709 | NULL, /* get_in6 */ | |
710 | NULL, /* add_router */ | |
711 | NULL, /* get_next_hop */ | |
275707c3 | 712 | NULL, /* get_status */ |
614c4892 BP |
713 | NULL, /* arp_lookup */ |
714 | ||
715 | netdev_dummy_update_flags, | |
716 | ||
9dc63482 | 717 | netdev_dummy_change_seq, |
614c4892 | 718 | |
9dc63482 BP |
719 | netdev_dummy_rx_alloc, |
720 | netdev_dummy_rx_construct, | |
721 | netdev_dummy_rx_destruct, | |
722 | netdev_dummy_rx_dealloc, | |
723 | netdev_dummy_rx_recv, | |
724 | netdev_dummy_rx_wait, | |
725 | netdev_dummy_rx_drain, | |
796223f5 BP |
726 | }; |
727 | ||
fbac791a BP |
728 | static struct ofpbuf * |
729 | eth_from_packet_or_flow(const char *s) | |
730 | { | |
731 | enum odp_key_fitness fitness; | |
732 | struct ofpbuf *packet; | |
733 | struct ofpbuf odp_key; | |
734 | struct flow flow; | |
735 | int error; | |
736 | ||
737 | if (!eth_from_hex(s, &packet)) { | |
738 | return packet; | |
739 | } | |
740 | ||
741 | /* Convert string to datapath key. | |
742 | * | |
743 | * It would actually be nicer to parse an OpenFlow-like flow key here, but | |
744 | * the code for that currently calls exit() on parse error. We have to | |
745 | * settle for parsing a datapath key for now. | |
746 | */ | |
747 | ofpbuf_init(&odp_key, 0); | |
e6cc0bab | 748 | error = odp_flow_from_string(s, NULL, &odp_key, NULL); |
fbac791a BP |
749 | if (error) { |
750 | ofpbuf_uninit(&odp_key); | |
751 | return NULL; | |
752 | } | |
753 | ||
754 | /* Convert odp_key to flow. */ | |
755 | fitness = odp_flow_key_to_flow(odp_key.data, odp_key.size, &flow); | |
756 | if (fitness == ODP_FIT_ERROR) { | |
757 | ofpbuf_uninit(&odp_key); | |
758 | return NULL; | |
759 | } | |
760 | ||
761 | packet = ofpbuf_new(0); | |
762 | flow_compose(packet, &flow); | |
763 | ||
764 | ofpbuf_uninit(&odp_key); | |
765 | return packet; | |
766 | } | |
767 | ||
323cc924 | 768 | static void |
eab5611a | 769 | netdev_dummy_queue_packet__(struct netdev_rx_dummy *rx, struct ofpbuf *packet) |
2273ea5a | 770 | { |
eab5611a BP |
771 | list_push_back(&rx->recv_queue, &packet->list_node); |
772 | rx->recv_queue_len++; | |
773 | } | |
2273ea5a | 774 | |
eab5611a BP |
775 | static void |
776 | netdev_dummy_queue_packet(struct netdev_dummy *dummy, struct ofpbuf *packet) | |
777 | { | |
778 | struct netdev_rx_dummy *rx, *prev; | |
779 | ||
780 | prev = NULL; | |
2273ea5a BP |
781 | LIST_FOR_EACH (rx, node, &dummy->rxes) { |
782 | if (rx->recv_queue_len < NETDEV_DUMMY_MAX_QUEUE) { | |
eab5611a BP |
783 | if (prev) { |
784 | netdev_dummy_queue_packet__(prev, ofpbuf_clone(packet)); | |
785 | } | |
786 | prev = rx; | |
2273ea5a BP |
787 | } |
788 | } | |
eab5611a BP |
789 | if (prev) { |
790 | netdev_dummy_queue_packet__(prev, packet); | |
791 | } else { | |
792 | ofpbuf_delete(packet); | |
793 | } | |
2273ea5a BP |
794 | } |
795 | ||
fbac791a BP |
796 | static void |
797 | netdev_dummy_receive(struct unixctl_conn *conn, | |
798 | int argc, const char *argv[], void *aux OVS_UNUSED) | |
799 | { | |
b5d57fc8 | 800 | struct netdev_dummy *dummy_dev; |
86f1d032 | 801 | struct netdev *netdev; |
fbac791a BP |
802 | int i; |
803 | ||
86f1d032 BP |
804 | netdev = netdev_from_name(argv[1]); |
805 | if (!netdev || !is_dummy_class(netdev->netdev_class)) { | |
bde9f75d | 806 | unixctl_command_reply_error(conn, "no such dummy netdev"); |
86f1d032 | 807 | goto exit; |
fbac791a | 808 | } |
86f1d032 | 809 | dummy_dev = netdev_dummy_cast(netdev); |
fbac791a | 810 | |
fbac791a | 811 | for (i = 2; i < argc; i++) { |
fbac791a BP |
812 | struct ofpbuf *packet; |
813 | ||
814 | packet = eth_from_packet_or_flow(argv[i]); | |
815 | if (!packet) { | |
bde9f75d | 816 | unixctl_command_reply_error(conn, "bad packet syntax"); |
86f1d032 | 817 | goto exit; |
fbac791a BP |
818 | } |
819 | ||
86383816 | 820 | ovs_mutex_lock(&dummy_dev->mutex); |
02d5bfe3 BP |
821 | dummy_dev->stats.rx_packets++; |
822 | dummy_dev->stats.rx_bytes += packet->size; | |
eab5611a | 823 | netdev_dummy_queue_packet(dummy_dev, packet); |
86383816 | 824 | ovs_mutex_unlock(&dummy_dev->mutex); |
fbac791a BP |
825 | } |
826 | ||
323cc924 | 827 | unixctl_command_reply(conn, NULL); |
86f1d032 BP |
828 | |
829 | exit: | |
830 | netdev_close(netdev); | |
fbac791a BP |
831 | } |
832 | ||
95d4ec33 | 833 | static void |
b5d57fc8 | 834 | netdev_dummy_set_admin_state__(struct netdev_dummy *dev, bool admin_state) |
86383816 | 835 | OVS_REQUIRES(dev->mutex) |
95d4ec33 EJ |
836 | { |
837 | enum netdev_flags old_flags; | |
838 | ||
839 | if (admin_state) { | |
86383816 | 840 | netdev_dummy_update_flags__(dev, 0, NETDEV_UP, &old_flags); |
95d4ec33 | 841 | } else { |
86383816 | 842 | netdev_dummy_update_flags__(dev, NETDEV_UP, 0, &old_flags); |
95d4ec33 EJ |
843 | } |
844 | } | |
845 | ||
846 | static void | |
847 | netdev_dummy_set_admin_state(struct unixctl_conn *conn, int argc, | |
848 | const char *argv[], void *aux OVS_UNUSED) | |
849 | { | |
850 | bool up; | |
851 | ||
852 | if (!strcasecmp(argv[argc - 1], "up")) { | |
853 | up = true; | |
854 | } else if ( !strcasecmp(argv[argc - 1], "down")) { | |
855 | up = false; | |
856 | } else { | |
857 | unixctl_command_reply_error(conn, "Invalid Admin State"); | |
858 | return; | |
859 | } | |
860 | ||
861 | if (argc > 2) { | |
86f1d032 BP |
862 | struct netdev *netdev = netdev_from_name(argv[1]); |
863 | if (netdev && is_dummy_class(netdev->netdev_class)) { | |
864 | struct netdev_dummy *dummy_dev = netdev_dummy_cast(netdev); | |
95d4ec33 | 865 | |
86383816 | 866 | ovs_mutex_lock(&dummy_dev->mutex); |
b5d57fc8 | 867 | netdev_dummy_set_admin_state__(dummy_dev, up); |
86383816 BP |
868 | ovs_mutex_unlock(&dummy_dev->mutex); |
869 | ||
86f1d032 | 870 | netdev_close(netdev); |
95d4ec33 EJ |
871 | } else { |
872 | unixctl_command_reply_error(conn, "Unknown Dummy Interface"); | |
86f1d032 | 873 | netdev_close(netdev); |
95d4ec33 EJ |
874 | return; |
875 | } | |
876 | } else { | |
5e1de67f | 877 | struct netdev_dummy *netdev; |
86383816 | 878 | |
5e1de67f BP |
879 | ovs_mutex_lock(&dummy_list_mutex); |
880 | LIST_FOR_EACH (netdev, list_node, &dummy_list) { | |
86383816 BP |
881 | ovs_mutex_lock(&netdev->mutex); |
882 | netdev_dummy_set_admin_state__(netdev, up); | |
883 | ovs_mutex_unlock(&netdev->mutex); | |
95d4ec33 | 884 | } |
5e1de67f | 885 | ovs_mutex_unlock(&dummy_list_mutex); |
95d4ec33 EJ |
886 | } |
887 | unixctl_command_reply(conn, "OK"); | |
888 | } | |
889 | ||
614c4892 | 890 | void |
0cbfe35d | 891 | netdev_dummy_register(bool override) |
614c4892 | 892 | { |
fbac791a BP |
893 | unixctl_command_register("netdev-dummy/receive", "NAME PACKET|FLOW...", |
894 | 2, INT_MAX, netdev_dummy_receive, NULL); | |
95d4ec33 EJ |
895 | unixctl_command_register("netdev-dummy/set-admin-state", |
896 | "[netdev] up|down", 1, 2, | |
897 | netdev_dummy_set_admin_state, NULL); | |
0cbfe35d BP |
898 | |
899 | if (override) { | |
900 | struct sset types; | |
901 | const char *type; | |
902 | ||
903 | sset_init(&types); | |
904 | netdev_enumerate_types(&types); | |
905 | SSET_FOR_EACH (type, &types) { | |
906 | if (!netdev_unregister_provider(type)) { | |
907 | struct netdev_class *class; | |
86383816 | 908 | int error; |
0cbfe35d | 909 | |
86383816 | 910 | class = xmemdup(&dummy_class, sizeof dummy_class); |
0cbfe35d | 911 | class->type = xstrdup(type); |
86383816 BP |
912 | error = netdev_register_provider(class); |
913 | if (error) { | |
914 | VLOG_ERR("%s: failed to register netdev provider (%s)", | |
915 | type, ovs_strerror(error)); | |
916 | free(CONST_CAST(char *, class->type)); | |
917 | free(class); | |
918 | } | |
0cbfe35d BP |
919 | } |
920 | } | |
921 | sset_destroy(&types); | |
922 | } | |
923 | netdev_register_provider(&dummy_class); | |
c060c4cf | 924 | |
7c54c27f | 925 | netdev_vport_tunnel_register(); |
614c4892 | 926 | } |