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72865317 | 1 | /* |
e0edde6f | 2 | * Copyright (c) 2009, 2010, 2011, 2012 Nicira, Inc. |
72865317 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 | #include "dpif.h" | |
19 | ||
20 | #include <assert.h> | |
21 | #include <ctype.h> | |
22 | #include <errno.h> | |
23 | #include <fcntl.h> | |
24 | #include <inttypes.h> | |
72865317 | 25 | #include <netinet/in.h> |
9d82ec47 | 26 | #include <sys/socket.h> |
7f3adc00 | 27 | #include <net/if.h> |
cdee00fd | 28 | #include <stdint.h> |
72865317 BP |
29 | #include <stdlib.h> |
30 | #include <string.h> | |
31 | #include <sys/ioctl.h> | |
32 | #include <sys/stat.h> | |
72865317 BP |
33 | #include <unistd.h> |
34 | ||
35 | #include "csum.h" | |
614c4892 | 36 | #include "dpif.h" |
72865317 | 37 | #include "dpif-provider.h" |
614c4892 | 38 | #include "dummy.h" |
36956a7d | 39 | #include "dynamic-string.h" |
72865317 BP |
40 | #include "flow.h" |
41 | #include "hmap.h" | |
42 | #include "list.h" | |
43 | #include "netdev.h" | |
cdee00fd | 44 | #include "netlink.h" |
72865317 BP |
45 | #include "odp-util.h" |
46 | #include "ofp-print.h" | |
47 | #include "ofpbuf.h" | |
48 | #include "packets.h" | |
49 | #include "poll-loop.h" | |
26c6b6cd | 50 | #include "random.h" |
462278db | 51 | #include "shash.h" |
0cbfe35d | 52 | #include "sset.h" |
72865317 BP |
53 | #include "timeval.h" |
54 | #include "util.h" | |
72865317 | 55 | #include "vlog.h" |
5136ce49 | 56 | |
d98e6007 | 57 | VLOG_DEFINE_THIS_MODULE(dpif_netdev); |
72865317 BP |
58 | |
59 | /* Configuration parameters. */ | |
72865317 BP |
60 | enum { MAX_PORTS = 256 }; /* Maximum number of ports. */ |
61 | enum { MAX_FLOWS = 65536 }; /* Maximum number of flows in flow table. */ | |
62 | ||
63 | /* Enough headroom to add a vlan tag, plus an extra 2 bytes to allow IP | |
64 | * headers to be aligned on a 4-byte boundary. */ | |
65 | enum { DP_NETDEV_HEADROOM = 2 + VLAN_HEADER_LEN }; | |
66 | ||
856081f6 BP |
67 | /* Queues. */ |
68 | enum { N_QUEUES = 2 }; /* Number of queues for dpif_recv(). */ | |
69 | enum { MAX_QUEUE_LEN = 128 }; /* Maximum number of packets per queue. */ | |
70 | enum { QUEUE_MASK = MAX_QUEUE_LEN - 1 }; | |
71 | BUILD_ASSERT_DECL(IS_POW2(MAX_QUEUE_LEN)); | |
72 | ||
d88b629b BP |
73 | struct dp_netdev_upcall { |
74 | struct dpif_upcall upcall; /* Queued upcall information. */ | |
75 | struct ofpbuf buf; /* ofpbuf instance for upcall.packet. */ | |
76 | }; | |
77 | ||
856081f6 | 78 | struct dp_netdev_queue { |
d88b629b | 79 | struct dp_netdev_upcall upcalls[MAX_QUEUE_LEN]; |
856081f6 BP |
80 | unsigned int head, tail; |
81 | }; | |
82 | ||
72865317 BP |
83 | /* Datapath based on the network device interface from netdev.h. */ |
84 | struct dp_netdev { | |
614c4892 | 85 | const struct dpif_class *class; |
462278db | 86 | char *name; |
72865317 | 87 | int open_cnt; |
7dab847a | 88 | bool destroyed; |
72865317 | 89 | |
856081f6 | 90 | struct dp_netdev_queue queues[N_QUEUES]; |
72865317 | 91 | struct hmap flow_table; /* Flow table. */ |
72865317 BP |
92 | |
93 | /* Statistics. */ | |
72865317 BP |
94 | long long int n_hit; /* Number of flow table matches. */ |
95 | long long int n_missed; /* Number of flow table misses. */ | |
96 | long long int n_lost; /* Number of misses not passed to client. */ | |
97 | ||
98 | /* Ports. */ | |
72865317 BP |
99 | struct dp_netdev_port *ports[MAX_PORTS]; |
100 | struct list port_list; | |
101 | unsigned int serial; | |
102 | }; | |
103 | ||
104 | /* A port in a netdev-based datapath. */ | |
105 | struct dp_netdev_port { | |
106 | int port_no; /* Index into dp_netdev's 'ports'. */ | |
107 | struct list node; /* Element in dp_netdev's 'port_list'. */ | |
108 | struct netdev *netdev; | |
0cbfe35d | 109 | char *type; /* Port type as requested by user. */ |
72865317 BP |
110 | }; |
111 | ||
112 | /* A flow in dp_netdev's 'flow_table'. */ | |
113 | struct dp_netdev_flow { | |
114 | struct hmap_node node; /* Element in dp_netdev's 'flow_table'. */ | |
14608a15 | 115 | struct flow key; |
72865317 BP |
116 | |
117 | /* Statistics. */ | |
c97fb132 | 118 | long long int used; /* Last used time, in monotonic msecs. */ |
2105ccc8 BP |
119 | long long int packet_count; /* Number of packets matched. */ |
120 | long long int byte_count; /* Number of bytes matched. */ | |
7c808e39 | 121 | uint8_t tcp_flags; /* Bitwise-OR of seen tcp_flags values. */ |
72865317 BP |
122 | |
123 | /* Actions. */ | |
cdee00fd | 124 | struct nlattr *actions; |
cf22f8cb | 125 | size_t actions_len; |
72865317 BP |
126 | }; |
127 | ||
128 | /* Interface to netdev-based datapath. */ | |
129 | struct dpif_netdev { | |
130 | struct dpif dpif; | |
131 | struct dp_netdev *dp; | |
72865317 BP |
132 | unsigned int dp_serial; |
133 | }; | |
134 | ||
135 | /* All netdev-based datapaths. */ | |
462278db | 136 | static struct shash dp_netdevs = SHASH_INITIALIZER(&dp_netdevs); |
72865317 BP |
137 | |
138 | /* Maximum port MTU seen so far. */ | |
139 | static int max_mtu = ETH_PAYLOAD_MAX; | |
140 | ||
9b56fe13 | 141 | static int get_port_by_number(struct dp_netdev *, uint32_t port_no, |
72865317 BP |
142 | struct dp_netdev_port **portp); |
143 | static int get_port_by_name(struct dp_netdev *, const char *devname, | |
144 | struct dp_netdev_port **portp); | |
145 | static void dp_netdev_free(struct dp_netdev *); | |
146 | static void dp_netdev_flow_flush(struct dp_netdev *); | |
c3827f61 | 147 | static int do_add_port(struct dp_netdev *, const char *devname, |
9b56fe13 JP |
148 | const char *type, uint32_t port_no); |
149 | static int do_del_port(struct dp_netdev *, uint32_t port_no); | |
614c4892 BP |
150 | static int dpif_netdev_open(const struct dpif_class *, const char *name, |
151 | bool create, struct dpif **); | |
b85d8d61 | 152 | static int dp_netdev_output_userspace(struct dp_netdev *, const struct ofpbuf *, |
856081f6 BP |
153 | int queue_no, const struct flow *, |
154 | uint64_t arg); | |
4edb9ae9 PS |
155 | static void dp_netdev_execute_actions(struct dp_netdev *, |
156 | struct ofpbuf *, struct flow *, | |
157 | const struct nlattr *actions, | |
158 | size_t actions_len); | |
72865317 BP |
159 | |
160 | static struct dpif_netdev * | |
161 | dpif_netdev_cast(const struct dpif *dpif) | |
162 | { | |
614c4892 | 163 | assert(dpif->dpif_class->open == dpif_netdev_open); |
72865317 BP |
164 | return CONTAINER_OF(dpif, struct dpif_netdev, dpif); |
165 | } | |
166 | ||
167 | static struct dp_netdev * | |
168 | get_dp_netdev(const struct dpif *dpif) | |
169 | { | |
170 | return dpif_netdev_cast(dpif)->dp; | |
171 | } | |
172 | ||
2197d7ab GL |
173 | static int |
174 | dpif_netdev_enumerate(struct sset *all_dps) | |
175 | { | |
176 | struct shash_node *node; | |
177 | ||
178 | SHASH_FOR_EACH(node, &dp_netdevs) { | |
179 | sset_add(all_dps, node->name); | |
180 | } | |
181 | return 0; | |
182 | } | |
183 | ||
72865317 BP |
184 | static struct dpif * |
185 | create_dpif_netdev(struct dp_netdev *dp) | |
186 | { | |
462278db | 187 | uint16_t netflow_id = hash_string(dp->name, 0); |
72865317 | 188 | struct dpif_netdev *dpif; |
72865317 BP |
189 | |
190 | dp->open_cnt++; | |
191 | ||
72865317 | 192 | dpif = xmalloc(sizeof *dpif); |
614c4892 | 193 | dpif_init(&dpif->dpif, dp->class, dp->name, netflow_id >> 8, netflow_id); |
72865317 | 194 | dpif->dp = dp; |
72865317 | 195 | dpif->dp_serial = dp->serial; |
72865317 BP |
196 | |
197 | return &dpif->dpif; | |
198 | } | |
199 | ||
200 | static int | |
614c4892 BP |
201 | create_dp_netdev(const char *name, const struct dpif_class *class, |
202 | struct dp_netdev **dpp) | |
72865317 BP |
203 | { |
204 | struct dp_netdev *dp; | |
205 | int error; | |
206 | int i; | |
207 | ||
462278db | 208 | dp = xzalloc(sizeof *dp); |
614c4892 | 209 | dp->class = class; |
462278db | 210 | dp->name = xstrdup(name); |
72865317 | 211 | dp->open_cnt = 0; |
72865317 | 212 | for (i = 0; i < N_QUEUES; i++) { |
856081f6 | 213 | dp->queues[i].head = dp->queues[i].tail = 0; |
72865317 BP |
214 | } |
215 | hmap_init(&dp->flow_table); | |
72865317 | 216 | list_init(&dp->port_list); |
df2c07f4 | 217 | error = do_add_port(dp, name, "internal", OVSP_LOCAL); |
72865317 BP |
218 | if (error) { |
219 | dp_netdev_free(dp); | |
462278db | 220 | return error; |
72865317 BP |
221 | } |
222 | ||
462278db BP |
223 | shash_add(&dp_netdevs, name, dp); |
224 | ||
225 | *dpp = dp; | |
72865317 BP |
226 | return 0; |
227 | } | |
228 | ||
229 | static int | |
614c4892 | 230 | dpif_netdev_open(const struct dpif_class *class, const char *name, |
4a387741 | 231 | bool create, struct dpif **dpifp) |
72865317 | 232 | { |
462278db BP |
233 | struct dp_netdev *dp; |
234 | ||
235 | dp = shash_find_data(&dp_netdevs, name); | |
236 | if (!dp) { | |
237 | if (!create) { | |
238 | return ENODEV; | |
72865317 | 239 | } else { |
614c4892 | 240 | int error = create_dp_netdev(name, class, &dp); |
462278db BP |
241 | if (error) { |
242 | return error; | |
72865317 | 243 | } |
462278db | 244 | assert(dp != NULL); |
72865317 BP |
245 | } |
246 | } else { | |
614c4892 BP |
247 | if (dp->class != class) { |
248 | return EINVAL; | |
249 | } else if (create) { | |
462278db | 250 | return EEXIST; |
72865317 BP |
251 | } |
252 | } | |
462278db BP |
253 | |
254 | *dpifp = create_dpif_netdev(dp); | |
255 | return 0; | |
72865317 BP |
256 | } |
257 | ||
258 | static void | |
1ba530f4 | 259 | dp_netdev_purge_queues(struct dp_netdev *dp) |
72865317 BP |
260 | { |
261 | int i; | |
262 | ||
72865317 | 263 | for (i = 0; i < N_QUEUES; i++) { |
856081f6 | 264 | struct dp_netdev_queue *q = &dp->queues[i]; |
856081f6 | 265 | |
1ba530f4 | 266 | while (q->tail != q->head) { |
d88b629b BP |
267 | struct dp_netdev_upcall *u = &q->upcalls[q->tail++ & QUEUE_MASK]; |
268 | ofpbuf_uninit(&u->buf); | |
856081f6 | 269 | } |
72865317 | 270 | } |
1ba530f4 BP |
271 | } |
272 | ||
273 | static void | |
274 | dp_netdev_free(struct dp_netdev *dp) | |
275 | { | |
4ad28026 BP |
276 | struct dp_netdev_port *port, *next; |
277 | ||
1ba530f4 | 278 | dp_netdev_flow_flush(dp); |
4ad28026 | 279 | LIST_FOR_EACH_SAFE (port, next, node, &dp->port_list) { |
1ba530f4 BP |
280 | do_del_port(dp, port->port_no); |
281 | } | |
282 | dp_netdev_purge_queues(dp); | |
72865317 | 283 | hmap_destroy(&dp->flow_table); |
462278db | 284 | free(dp->name); |
72865317 BP |
285 | free(dp); |
286 | } | |
287 | ||
288 | static void | |
289 | dpif_netdev_close(struct dpif *dpif) | |
290 | { | |
291 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
292 | assert(dp->open_cnt > 0); | |
7dab847a | 293 | if (--dp->open_cnt == 0 && dp->destroyed) { |
462278db | 294 | shash_find_and_delete(&dp_netdevs, dp->name); |
72865317 BP |
295 | dp_netdev_free(dp); |
296 | } | |
297 | free(dpif); | |
298 | } | |
299 | ||
300 | static int | |
7dab847a | 301 | dpif_netdev_destroy(struct dpif *dpif) |
72865317 BP |
302 | { |
303 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
7dab847a | 304 | dp->destroyed = true; |
72865317 BP |
305 | return 0; |
306 | } | |
307 | ||
308 | static int | |
a8d9304d | 309 | dpif_netdev_get_stats(const struct dpif *dpif, struct dpif_dp_stats *stats) |
72865317 BP |
310 | { |
311 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
f180c2e2 | 312 | stats->n_flows = hmap_count(&dp->flow_table); |
72865317 BP |
313 | stats->n_hit = dp->n_hit; |
314 | stats->n_missed = dp->n_missed; | |
315 | stats->n_lost = dp->n_lost; | |
72865317 BP |
316 | return 0; |
317 | } | |
318 | ||
72865317 | 319 | static int |
c3827f61 | 320 | do_add_port(struct dp_netdev *dp, const char *devname, const char *type, |
9b56fe13 | 321 | uint32_t port_no) |
72865317 | 322 | { |
72865317 BP |
323 | struct dp_netdev_port *port; |
324 | struct netdev *netdev; | |
0cbfe35d | 325 | const char *open_type; |
72865317 BP |
326 | int mtu; |
327 | int error; | |
328 | ||
329 | /* XXX reject devices already in some dp_netdev. */ | |
330 | ||
331 | /* Open and validate network device. */ | |
0cbfe35d BP |
332 | open_type = (strcmp(type, "internal") ? type |
333 | : dp->class != &dpif_netdev_class ? "dummy" | |
334 | : "tap"); | |
335 | error = netdev_open(devname, open_type, &netdev); | |
72865317 BP |
336 | if (error) { |
337 | return error; | |
338 | } | |
339 | /* XXX reject loopback devices */ | |
340 | /* XXX reject non-Ethernet devices */ | |
341 | ||
7b6b0ef4 BP |
342 | error = netdev_listen(netdev); |
343 | if (error) { | |
344 | VLOG_ERR("%s: cannot receive packets on this network device (%s)", | |
345 | devname, strerror(errno)); | |
346 | netdev_close(netdev); | |
347 | return error; | |
348 | } | |
349 | ||
72865317 BP |
350 | error = netdev_turn_flags_on(netdev, NETDEV_PROMISC, false); |
351 | if (error) { | |
352 | netdev_close(netdev); | |
353 | return error; | |
354 | } | |
355 | ||
356 | port = xmalloc(sizeof *port); | |
357 | port->port_no = port_no; | |
358 | port->netdev = netdev; | |
0cbfe35d | 359 | port->type = xstrdup(type); |
72865317 | 360 | |
9b020780 PS |
361 | error = netdev_get_mtu(netdev, &mtu); |
362 | if (!error) { | |
72865317 BP |
363 | max_mtu = mtu; |
364 | } | |
365 | ||
366 | list_push_back(&dp->port_list, &port->node); | |
367 | dp->ports[port_no] = port; | |
72865317 BP |
368 | dp->serial++; |
369 | ||
370 | return 0; | |
371 | } | |
372 | ||
373 | static int | |
247527db | 374 | choose_port(struct dpif *dpif, struct netdev *netdev) |
72865317 BP |
375 | { |
376 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
377 | int port_no; | |
378 | ||
0cbfe35d | 379 | if (dpif->dpif_class != &dpif_netdev_class) { |
247527db BP |
380 | /* If the port name contains a number, try to assign that port number. |
381 | * This can make writing unit tests easier because port numbers are | |
382 | * predictable. */ | |
383 | const char *p; | |
384 | ||
385 | for (p = netdev_get_name(netdev); *p != '\0'; p++) { | |
386 | if (isdigit((unsigned char) *p)) { | |
387 | port_no = strtol(p, NULL, 10); | |
388 | if (port_no > 0 && port_no < MAX_PORTS | |
389 | && !dp->ports[port_no]) { | |
390 | return port_no; | |
391 | } | |
392 | break; | |
393 | } | |
394 | } | |
395 | } | |
396 | ||
72865317 BP |
397 | for (port_no = 0; port_no < MAX_PORTS; port_no++) { |
398 | if (!dp->ports[port_no]) { | |
247527db | 399 | return port_no; |
72865317 BP |
400 | } |
401 | } | |
247527db BP |
402 | |
403 | return -1; | |
404 | } | |
405 | ||
406 | static int | |
407 | dpif_netdev_port_add(struct dpif *dpif, struct netdev *netdev, | |
9b56fe13 | 408 | uint32_t *port_nop) |
247527db BP |
409 | { |
410 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
411 | int port_no; | |
412 | ||
9b56fe13 | 413 | if (*port_nop != UINT32_MAX) { |
232dfa4a JP |
414 | if (*port_nop >= MAX_PORTS) { |
415 | return EFBIG; | |
416 | } else if (dp->ports[*port_nop]) { | |
417 | return EBUSY; | |
418 | } | |
419 | port_no = *port_nop; | |
420 | } else { | |
421 | port_no = choose_port(dpif, netdev); | |
422 | } | |
247527db BP |
423 | if (port_no >= 0) { |
424 | *port_nop = port_no; | |
425 | return do_add_port(dp, netdev_get_name(netdev), | |
426 | netdev_get_type(netdev), port_no); | |
427 | } | |
3c71830a | 428 | return EFBIG; |
72865317 BP |
429 | } |
430 | ||
431 | static int | |
9b56fe13 | 432 | dpif_netdev_port_del(struct dpif *dpif, uint32_t port_no) |
72865317 BP |
433 | { |
434 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
df2c07f4 | 435 | return port_no == OVSP_LOCAL ? EINVAL : do_del_port(dp, port_no); |
72865317 BP |
436 | } |
437 | ||
438 | static bool | |
9b56fe13 | 439 | is_valid_port_number(uint32_t port_no) |
72865317 BP |
440 | { |
441 | return port_no < MAX_PORTS; | |
442 | } | |
443 | ||
444 | static int | |
445 | get_port_by_number(struct dp_netdev *dp, | |
9b56fe13 | 446 | uint32_t port_no, struct dp_netdev_port **portp) |
72865317 BP |
447 | { |
448 | if (!is_valid_port_number(port_no)) { | |
449 | *portp = NULL; | |
450 | return EINVAL; | |
451 | } else { | |
452 | *portp = dp->ports[port_no]; | |
453 | return *portp ? 0 : ENOENT; | |
454 | } | |
455 | } | |
456 | ||
457 | static int | |
458 | get_port_by_name(struct dp_netdev *dp, | |
459 | const char *devname, struct dp_netdev_port **portp) | |
460 | { | |
461 | struct dp_netdev_port *port; | |
462 | ||
4e8e4213 | 463 | LIST_FOR_EACH (port, node, &dp->port_list) { |
72865317 BP |
464 | if (!strcmp(netdev_get_name(port->netdev), devname)) { |
465 | *portp = port; | |
466 | return 0; | |
467 | } | |
468 | } | |
469 | return ENOENT; | |
470 | } | |
471 | ||
472 | static int | |
9b56fe13 | 473 | do_del_port(struct dp_netdev *dp, uint32_t port_no) |
72865317 BP |
474 | { |
475 | struct dp_netdev_port *port; | |
6c88d577 | 476 | char *name; |
72865317 BP |
477 | int error; |
478 | ||
479 | error = get_port_by_number(dp, port_no, &port); | |
480 | if (error) { | |
481 | return error; | |
482 | } | |
483 | ||
484 | list_remove(&port->node); | |
485 | dp->ports[port->port_no] = NULL; | |
72865317 BP |
486 | dp->serial++; |
487 | ||
6c88d577 | 488 | name = xstrdup(netdev_get_name(port->netdev)); |
72865317 | 489 | netdev_close(port->netdev); |
0cbfe35d | 490 | free(port->type); |
149f577a | 491 | |
6c88d577 | 492 | free(name); |
72865317 BP |
493 | free(port); |
494 | ||
495 | return 0; | |
496 | } | |
497 | ||
498 | static void | |
4c738a8d BP |
499 | answer_port_query(const struct dp_netdev_port *port, |
500 | struct dpif_port *dpif_port) | |
72865317 | 501 | { |
4c738a8d | 502 | dpif_port->name = xstrdup(netdev_get_name(port->netdev)); |
0cbfe35d | 503 | dpif_port->type = xstrdup(port->type); |
4c738a8d | 504 | dpif_port->port_no = port->port_no; |
72865317 BP |
505 | } |
506 | ||
507 | static int | |
9b56fe13 | 508 | dpif_netdev_port_query_by_number(const struct dpif *dpif, uint32_t port_no, |
4c738a8d | 509 | struct dpif_port *dpif_port) |
72865317 BP |
510 | { |
511 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
512 | struct dp_netdev_port *port; | |
513 | int error; | |
514 | ||
515 | error = get_port_by_number(dp, port_no, &port); | |
516 | if (!error) { | |
4c738a8d | 517 | answer_port_query(port, dpif_port); |
72865317 BP |
518 | } |
519 | return error; | |
520 | } | |
521 | ||
522 | static int | |
523 | dpif_netdev_port_query_by_name(const struct dpif *dpif, const char *devname, | |
4c738a8d | 524 | struct dpif_port *dpif_port) |
72865317 BP |
525 | { |
526 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
527 | struct dp_netdev_port *port; | |
528 | int error; | |
529 | ||
530 | error = get_port_by_name(dp, devname, &port); | |
531 | if (!error) { | |
4c738a8d | 532 | answer_port_query(port, dpif_port); |
72865317 BP |
533 | } |
534 | return error; | |
535 | } | |
536 | ||
996c1b3d BP |
537 | static int |
538 | dpif_netdev_get_max_ports(const struct dpif *dpif OVS_UNUSED) | |
539 | { | |
540 | return MAX_PORTS; | |
541 | } | |
542 | ||
72865317 BP |
543 | static void |
544 | dp_netdev_free_flow(struct dp_netdev *dp, struct dp_netdev_flow *flow) | |
545 | { | |
546 | hmap_remove(&dp->flow_table, &flow->node); | |
547 | free(flow->actions); | |
548 | free(flow); | |
549 | } | |
550 | ||
551 | static void | |
552 | dp_netdev_flow_flush(struct dp_netdev *dp) | |
553 | { | |
554 | struct dp_netdev_flow *flow, *next; | |
555 | ||
4e8e4213 | 556 | HMAP_FOR_EACH_SAFE (flow, next, node, &dp->flow_table) { |
72865317 BP |
557 | dp_netdev_free_flow(dp, flow); |
558 | } | |
559 | } | |
560 | ||
561 | static int | |
562 | dpif_netdev_flow_flush(struct dpif *dpif) | |
563 | { | |
564 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
565 | dp_netdev_flow_flush(dp); | |
566 | return 0; | |
567 | } | |
568 | ||
b0ec0f27 BP |
569 | struct dp_netdev_port_state { |
570 | uint32_t port_no; | |
4c738a8d | 571 | char *name; |
b0ec0f27 BP |
572 | }; |
573 | ||
574 | static int | |
575 | dpif_netdev_port_dump_start(const struct dpif *dpif OVS_UNUSED, void **statep) | |
576 | { | |
577 | *statep = xzalloc(sizeof(struct dp_netdev_port_state)); | |
578 | return 0; | |
579 | } | |
580 | ||
72865317 | 581 | static int |
b0ec0f27 | 582 | dpif_netdev_port_dump_next(const struct dpif *dpif, void *state_, |
4c738a8d | 583 | struct dpif_port *dpif_port) |
72865317 | 584 | { |
b0ec0f27 | 585 | struct dp_netdev_port_state *state = state_; |
72865317 | 586 | struct dp_netdev *dp = get_dp_netdev(dpif); |
b0ec0f27 | 587 | uint32_t port_no; |
72865317 | 588 | |
b0ec0f27 BP |
589 | for (port_no = state->port_no; port_no < MAX_PORTS; port_no++) { |
590 | struct dp_netdev_port *port = dp->ports[port_no]; | |
591 | if (port) { | |
4c738a8d BP |
592 | free(state->name); |
593 | state->name = xstrdup(netdev_get_name(port->netdev)); | |
594 | dpif_port->name = state->name; | |
0cbfe35d | 595 | dpif_port->type = port->type; |
4c738a8d | 596 | dpif_port->port_no = port->port_no; |
b0ec0f27 BP |
597 | state->port_no = port_no + 1; |
598 | return 0; | |
72865317 | 599 | } |
72865317 | 600 | } |
b0ec0f27 BP |
601 | return EOF; |
602 | } | |
603 | ||
604 | static int | |
4c738a8d | 605 | dpif_netdev_port_dump_done(const struct dpif *dpif OVS_UNUSED, void *state_) |
b0ec0f27 | 606 | { |
4c738a8d BP |
607 | struct dp_netdev_port_state *state = state_; |
608 | free(state->name); | |
b0ec0f27 BP |
609 | free(state); |
610 | return 0; | |
72865317 BP |
611 | } |
612 | ||
613 | static int | |
67a4917b | 614 | dpif_netdev_port_poll(const struct dpif *dpif_, char **devnamep OVS_UNUSED) |
72865317 BP |
615 | { |
616 | struct dpif_netdev *dpif = dpif_netdev_cast(dpif_); | |
617 | if (dpif->dp_serial != dpif->dp->serial) { | |
618 | dpif->dp_serial = dpif->dp->serial; | |
619 | return ENOBUFS; | |
620 | } else { | |
621 | return EAGAIN; | |
622 | } | |
623 | } | |
624 | ||
625 | static void | |
626 | dpif_netdev_port_poll_wait(const struct dpif *dpif_) | |
627 | { | |
628 | struct dpif_netdev *dpif = dpif_netdev_cast(dpif_); | |
629 | if (dpif->dp_serial != dpif->dp->serial) { | |
630 | poll_immediate_wake(); | |
631 | } | |
632 | } | |
633 | ||
72865317 | 634 | static struct dp_netdev_flow * |
14608a15 | 635 | dp_netdev_lookup_flow(const struct dp_netdev *dp, const struct flow *key) |
72865317 BP |
636 | { |
637 | struct dp_netdev_flow *flow; | |
638 | ||
4e8e4213 | 639 | HMAP_FOR_EACH_WITH_HASH (flow, node, flow_hash(key, 0), &dp->flow_table) { |
72865317 BP |
640 | if (flow_equal(&flow->key, key)) { |
641 | return flow; | |
642 | } | |
643 | } | |
644 | return NULL; | |
645 | } | |
646 | ||
647 | static void | |
c97fb132 | 648 | get_dpif_flow_stats(struct dp_netdev_flow *flow, struct dpif_flow_stats *stats) |
feebdea2 BP |
649 | { |
650 | stats->n_packets = flow->packet_count; | |
651 | stats->n_bytes = flow->byte_count; | |
c97fb132 | 652 | stats->used = flow->used; |
734ec5ec | 653 | stats->tcp_flags = flow->tcp_flags; |
72865317 BP |
654 | } |
655 | ||
36956a7d BP |
656 | static int |
657 | dpif_netdev_flow_from_nlattrs(const struct nlattr *key, uint32_t key_len, | |
658 | struct flow *flow) | |
659 | { | |
660 | if (odp_flow_key_to_flow(key, key_len, flow)) { | |
661 | /* This should not happen: it indicates that odp_flow_key_from_flow() | |
662 | * and odp_flow_key_to_flow() disagree on the acceptable form of a | |
663 | * flow. Log the problem as an error, with enough details to enable | |
664 | * debugging. */ | |
665 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
666 | ||
667 | if (!VLOG_DROP_ERR(&rl)) { | |
668 | struct ds s; | |
669 | ||
670 | ds_init(&s); | |
671 | odp_flow_key_format(key, key_len, &s); | |
672 | VLOG_ERR("internal error parsing flow key %s", ds_cstr(&s)); | |
673 | ds_destroy(&s); | |
674 | } | |
675 | ||
676 | return EINVAL; | |
677 | } | |
678 | ||
18886b60 BP |
679 | if (flow->in_port < OFPP_MAX |
680 | ? flow->in_port >= MAX_PORTS | |
681 | : flow->in_port != OFPP_LOCAL && flow->in_port != OFPP_NONE) { | |
682 | return EINVAL; | |
683 | } | |
684 | ||
36956a7d BP |
685 | return 0; |
686 | } | |
687 | ||
72865317 | 688 | static int |
693c4a01 | 689 | dpif_netdev_flow_get(const struct dpif *dpif, |
feebdea2 | 690 | const struct nlattr *nl_key, size_t nl_key_len, |
c97fb132 | 691 | struct ofpbuf **actionsp, struct dpif_flow_stats *stats) |
72865317 BP |
692 | { |
693 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
bc4a05c6 BP |
694 | struct dp_netdev_flow *flow; |
695 | struct flow key; | |
696 | int error; | |
36956a7d | 697 | |
feebdea2 | 698 | error = dpif_netdev_flow_from_nlattrs(nl_key, nl_key_len, &key); |
bc4a05c6 BP |
699 | if (error) { |
700 | return error; | |
701 | } | |
14608a15 | 702 | |
bc4a05c6 BP |
703 | flow = dp_netdev_lookup_flow(dp, &key); |
704 | if (!flow) { | |
705 | return ENOENT; | |
72865317 | 706 | } |
bc4a05c6 | 707 | |
feebdea2 | 708 | if (stats) { |
c97fb132 | 709 | get_dpif_flow_stats(flow, stats); |
feebdea2 BP |
710 | } |
711 | if (actionsp) { | |
712 | *actionsp = ofpbuf_clone_data(flow->actions, flow->actions_len); | |
713 | } | |
72865317 BP |
714 | return 0; |
715 | } | |
716 | ||
72865317 | 717 | static int |
feebdea2 BP |
718 | set_flow_actions(struct dp_netdev_flow *flow, |
719 | const struct nlattr *actions, size_t actions_len) | |
72865317 | 720 | { |
feebdea2 BP |
721 | flow->actions = xrealloc(flow->actions, actions_len); |
722 | flow->actions_len = actions_len; | |
723 | memcpy(flow->actions, actions, actions_len); | |
72865317 BP |
724 | return 0; |
725 | } | |
726 | ||
727 | static int | |
e1fef0f9 AS |
728 | dp_netdev_flow_add(struct dp_netdev *dp, const struct flow *key, |
729 | const struct nlattr *actions, size_t actions_len) | |
72865317 | 730 | { |
72865317 BP |
731 | struct dp_netdev_flow *flow; |
732 | int error; | |
733 | ||
ec6fde61 | 734 | flow = xzalloc(sizeof *flow); |
36956a7d | 735 | flow->key = *key; |
72865317 | 736 | |
feebdea2 | 737 | error = set_flow_actions(flow, actions, actions_len); |
72865317 BP |
738 | if (error) { |
739 | free(flow); | |
740 | return error; | |
741 | } | |
742 | ||
743 | hmap_insert(&dp->flow_table, &flow->node, flow_hash(&flow->key, 0)); | |
744 | return 0; | |
745 | } | |
746 | ||
747 | static void | |
748 | clear_stats(struct dp_netdev_flow *flow) | |
749 | { | |
c97fb132 | 750 | flow->used = 0; |
72865317 BP |
751 | flow->packet_count = 0; |
752 | flow->byte_count = 0; | |
734ec5ec | 753 | flow->tcp_flags = 0; |
72865317 BP |
754 | } |
755 | ||
756 | static int | |
89625d1e | 757 | dpif_netdev_flow_put(struct dpif *dpif, const struct dpif_flow_put *put) |
72865317 BP |
758 | { |
759 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
760 | struct dp_netdev_flow *flow; | |
14608a15 | 761 | struct flow key; |
36956a7d BP |
762 | int error; |
763 | ||
89625d1e | 764 | error = dpif_netdev_flow_from_nlattrs(put->key, put->key_len, &key); |
36956a7d BP |
765 | if (error) { |
766 | return error; | |
767 | } | |
72865317 | 768 | |
14608a15 | 769 | flow = dp_netdev_lookup_flow(dp, &key); |
72865317 | 770 | if (!flow) { |
89625d1e | 771 | if (put->flags & DPIF_FP_CREATE) { |
72865317 | 772 | if (hmap_count(&dp->flow_table) < MAX_FLOWS) { |
89625d1e BP |
773 | if (put->stats) { |
774 | memset(put->stats, 0, sizeof *put->stats); | |
feebdea2 | 775 | } |
e1fef0f9 AS |
776 | return dp_netdev_flow_add(dp, &key, put->actions, |
777 | put->actions_len); | |
72865317 | 778 | } else { |
3c71830a | 779 | return EFBIG; |
72865317 BP |
780 | } |
781 | } else { | |
782 | return ENOENT; | |
783 | } | |
784 | } else { | |
89625d1e BP |
785 | if (put->flags & DPIF_FP_MODIFY) { |
786 | int error = set_flow_actions(flow, put->actions, put->actions_len); | |
feebdea2 | 787 | if (!error) { |
89625d1e BP |
788 | if (put->stats) { |
789 | get_dpif_flow_stats(flow, put->stats); | |
feebdea2 | 790 | } |
89625d1e | 791 | if (put->flags & DPIF_FP_ZERO_STATS) { |
feebdea2 BP |
792 | clear_stats(flow); |
793 | } | |
72865317 BP |
794 | } |
795 | return error; | |
796 | } else { | |
797 | return EEXIST; | |
798 | } | |
799 | } | |
800 | } | |
801 | ||
72865317 | 802 | static int |
b99d3cee | 803 | dpif_netdev_flow_del(struct dpif *dpif, const struct dpif_flow_del *del) |
72865317 BP |
804 | { |
805 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
806 | struct dp_netdev_flow *flow; | |
14608a15 | 807 | struct flow key; |
36956a7d BP |
808 | int error; |
809 | ||
b99d3cee | 810 | error = dpif_netdev_flow_from_nlattrs(del->key, del->key_len, &key); |
36956a7d BP |
811 | if (error) { |
812 | return error; | |
813 | } | |
72865317 | 814 | |
14608a15 | 815 | flow = dp_netdev_lookup_flow(dp, &key); |
72865317 | 816 | if (flow) { |
b99d3cee BP |
817 | if (del->stats) { |
818 | get_dpif_flow_stats(flow, del->stats); | |
feebdea2 | 819 | } |
72865317 BP |
820 | dp_netdev_free_flow(dp, flow); |
821 | return 0; | |
822 | } else { | |
823 | return ENOENT; | |
824 | } | |
825 | } | |
826 | ||
704a1e09 BP |
827 | struct dp_netdev_flow_state { |
828 | uint32_t bucket; | |
829 | uint32_t offset; | |
feebdea2 | 830 | struct nlattr *actions; |
19cf4069 | 831 | struct odputil_keybuf keybuf; |
c97fb132 | 832 | struct dpif_flow_stats stats; |
704a1e09 BP |
833 | }; |
834 | ||
72865317 | 835 | static int |
704a1e09 | 836 | dpif_netdev_flow_dump_start(const struct dpif *dpif OVS_UNUSED, void **statep) |
72865317 | 837 | { |
feebdea2 BP |
838 | struct dp_netdev_flow_state *state; |
839 | ||
840 | *statep = state = xmalloc(sizeof *state); | |
841 | state->bucket = 0; | |
842 | state->offset = 0; | |
843 | state->actions = NULL; | |
704a1e09 BP |
844 | return 0; |
845 | } | |
846 | ||
847 | static int | |
848 | dpif_netdev_flow_dump_next(const struct dpif *dpif, void *state_, | |
feebdea2 BP |
849 | const struct nlattr **key, size_t *key_len, |
850 | const struct nlattr **actions, size_t *actions_len, | |
c97fb132 | 851 | const struct dpif_flow_stats **stats) |
704a1e09 BP |
852 | { |
853 | struct dp_netdev_flow_state *state = state_; | |
72865317 BP |
854 | struct dp_netdev *dp = get_dp_netdev(dpif); |
855 | struct dp_netdev_flow *flow; | |
704a1e09 | 856 | struct hmap_node *node; |
14608a15 | 857 | |
704a1e09 BP |
858 | node = hmap_at_position(&dp->flow_table, &state->bucket, &state->offset); |
859 | if (!node) { | |
860 | return EOF; | |
72865317 | 861 | } |
704a1e09 BP |
862 | |
863 | flow = CONTAINER_OF(node, struct dp_netdev_flow, node); | |
36956a7d | 864 | |
feebdea2 BP |
865 | if (key) { |
866 | struct ofpbuf buf; | |
867 | ||
19cf4069 | 868 | ofpbuf_use_stack(&buf, &state->keybuf, sizeof state->keybuf); |
ddbfda84 | 869 | odp_flow_key_from_flow(&buf, &flow->key, flow->key.in_port); |
36956a7d | 870 | |
feebdea2 BP |
871 | *key = buf.data; |
872 | *key_len = buf.size; | |
873 | } | |
874 | ||
875 | if (actions) { | |
876 | free(state->actions); | |
877 | state->actions = xmemdup(flow->actions, flow->actions_len); | |
878 | ||
879 | *actions = state->actions; | |
880 | *actions_len = flow->actions_len; | |
881 | } | |
882 | ||
883 | if (stats) { | |
c97fb132 | 884 | get_dpif_flow_stats(flow, &state->stats); |
feebdea2 BP |
885 | *stats = &state->stats; |
886 | } | |
704a1e09 BP |
887 | |
888 | return 0; | |
889 | } | |
890 | ||
891 | static int | |
feebdea2 | 892 | dpif_netdev_flow_dump_done(const struct dpif *dpif OVS_UNUSED, void *state_) |
704a1e09 | 893 | { |
feebdea2 BP |
894 | struct dp_netdev_flow_state *state = state_; |
895 | ||
896 | free(state->actions); | |
704a1e09 BP |
897 | free(state); |
898 | return 0; | |
72865317 BP |
899 | } |
900 | ||
901 | static int | |
89625d1e | 902 | dpif_netdev_execute(struct dpif *dpif, const struct dpif_execute *execute) |
72865317 BP |
903 | { |
904 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
905 | struct ofpbuf copy; | |
ae412e7d | 906 | struct flow key; |
72865317 BP |
907 | int error; |
908 | ||
89625d1e BP |
909 | if (execute->packet->size < ETH_HEADER_LEN || |
910 | execute->packet->size > UINT16_MAX) { | |
72865317 BP |
911 | return EINVAL; |
912 | } | |
913 | ||
109ee281 | 914 | /* Make a deep copy of 'packet', because we might modify its data. */ |
89625d1e | 915 | ofpbuf_init(©, DP_NETDEV_HEADROOM + execute->packet->size); |
109ee281 | 916 | ofpbuf_reserve(©, DP_NETDEV_HEADROOM); |
89625d1e | 917 | ofpbuf_put(©, execute->packet->data, execute->packet->size); |
80e5eed9 | 918 | |
296e07ac | 919 | flow_extract(©, 0, NULL, -1, &key); |
89625d1e BP |
920 | error = dpif_netdev_flow_from_nlattrs(execute->key, execute->key_len, |
921 | &key); | |
18886b60 | 922 | if (!error) { |
4edb9ae9 | 923 | dp_netdev_execute_actions(dp, ©, &key, |
89625d1e | 924 | execute->actions, execute->actions_len); |
18886b60 | 925 | } |
109ee281 BP |
926 | |
927 | ofpbuf_uninit(©); | |
72865317 BP |
928 | return error; |
929 | } | |
930 | ||
931 | static int | |
a12b3ead | 932 | dpif_netdev_recv_set(struct dpif *dpif OVS_UNUSED, bool enable OVS_UNUSED) |
72865317 | 933 | { |
82272ede | 934 | return 0; |
72865317 BP |
935 | } |
936 | ||
5bf93d67 EJ |
937 | static int |
938 | dpif_netdev_queue_to_priority(const struct dpif *dpif OVS_UNUSED, | |
939 | uint32_t queue_id, uint32_t *priority) | |
940 | { | |
941 | *priority = queue_id; | |
942 | return 0; | |
943 | } | |
944 | ||
856081f6 | 945 | static struct dp_netdev_queue * |
72865317 BP |
946 | find_nonempty_queue(struct dpif *dpif) |
947 | { | |
72865317 | 948 | struct dp_netdev *dp = get_dp_netdev(dpif); |
72865317 BP |
949 | int i; |
950 | ||
951 | for (i = 0; i < N_QUEUES; i++) { | |
856081f6 | 952 | struct dp_netdev_queue *q = &dp->queues[i]; |
a12b3ead | 953 | if (q->head != q->tail) { |
856081f6 | 954 | return q; |
72865317 BP |
955 | } |
956 | } | |
856081f6 | 957 | return NULL; |
72865317 BP |
958 | } |
959 | ||
960 | static int | |
90a7c55e BP |
961 | dpif_netdev_recv(struct dpif *dpif, struct dpif_upcall *upcall, |
962 | struct ofpbuf *buf) | |
72865317 | 963 | { |
856081f6 BP |
964 | struct dp_netdev_queue *q = find_nonempty_queue(dpif); |
965 | if (q) { | |
d88b629b BP |
966 | struct dp_netdev_upcall *u = &q->upcalls[q->tail++ & QUEUE_MASK]; |
967 | ||
968 | *upcall = u->upcall; | |
969 | upcall->packet = buf; | |
b3907fbc | 970 | |
90a7c55e | 971 | ofpbuf_uninit(buf); |
d88b629b | 972 | *buf = u->buf; |
90a7c55e | 973 | |
72865317 BP |
974 | return 0; |
975 | } else { | |
976 | return EAGAIN; | |
977 | } | |
978 | } | |
979 | ||
980 | static void | |
981 | dpif_netdev_recv_wait(struct dpif *dpif) | |
982 | { | |
856081f6 | 983 | if (find_nonempty_queue(dpif)) { |
72865317 BP |
984 | poll_immediate_wake(); |
985 | } else { | |
986 | /* No messages ready to be received, and dp_wait() will ensure that we | |
987 | * wake up to queue new messages, so there is nothing to do. */ | |
988 | } | |
989 | } | |
1ba530f4 BP |
990 | |
991 | static void | |
992 | dpif_netdev_recv_purge(struct dpif *dpif) | |
993 | { | |
994 | struct dpif_netdev *dpif_netdev = dpif_netdev_cast(dpif); | |
995 | dp_netdev_purge_queues(dpif_netdev->dp); | |
996 | } | |
72865317 BP |
997 | \f |
998 | static void | |
c1fe014d | 999 | dp_netdev_flow_used(struct dp_netdev_flow *flow, const struct ofpbuf *packet) |
72865317 | 1000 | { |
c97fb132 | 1001 | flow->used = time_msec(); |
72865317 BP |
1002 | flow->packet_count++; |
1003 | flow->byte_count += packet->size; | |
c1fe014d | 1004 | flow->tcp_flags |= packet_get_tcp_flags(packet, &flow->key); |
72865317 BP |
1005 | } |
1006 | ||
1007 | static void | |
1008 | dp_netdev_port_input(struct dp_netdev *dp, struct dp_netdev_port *port, | |
1009 | struct ofpbuf *packet) | |
1010 | { | |
1011 | struct dp_netdev_flow *flow; | |
14608a15 | 1012 | struct flow key; |
72865317 | 1013 | |
1805876e BP |
1014 | if (packet->size < ETH_HEADER_LEN) { |
1015 | return; | |
1016 | } | |
ddbfda84 | 1017 | flow_extract(packet, 0, NULL, port->port_no, &key); |
72865317 BP |
1018 | flow = dp_netdev_lookup_flow(dp, &key); |
1019 | if (flow) { | |
c1fe014d | 1020 | dp_netdev_flow_used(flow, packet); |
72865317 | 1021 | dp_netdev_execute_actions(dp, packet, &key, |
cdee00fd | 1022 | flow->actions, flow->actions_len); |
72865317 BP |
1023 | dp->n_hit++; |
1024 | } else { | |
1025 | dp->n_missed++; | |
b85d8d61 | 1026 | dp_netdev_output_userspace(dp, packet, DPIF_UC_MISS, &key, 0); |
72865317 BP |
1027 | } |
1028 | } | |
1029 | ||
1030 | static void | |
640e1b20 | 1031 | dpif_netdev_run(struct dpif *dpif) |
72865317 | 1032 | { |
640e1b20 BP |
1033 | struct dp_netdev *dp = get_dp_netdev(dpif); |
1034 | struct dp_netdev_port *port; | |
72865317 | 1035 | struct ofpbuf packet; |
72865317 | 1036 | |
ecf9ebff | 1037 | ofpbuf_init(&packet, DP_NETDEV_HEADROOM + VLAN_ETH_HEADER_LEN + max_mtu); |
72865317 | 1038 | |
640e1b20 BP |
1039 | LIST_FOR_EACH (port, node, &dp->port_list) { |
1040 | int error; | |
1041 | ||
1042 | /* Reset packet contents. */ | |
1043 | ofpbuf_clear(&packet); | |
1044 | ofpbuf_reserve(&packet, DP_NETDEV_HEADROOM); | |
1045 | ||
1046 | error = netdev_recv(port->netdev, &packet); | |
1047 | if (!error) { | |
1048 | dp_netdev_port_input(dp, port, &packet); | |
1049 | } else if (error != EAGAIN && error != EOPNOTSUPP) { | |
1050 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
1051 | VLOG_ERR_RL(&rl, "error receiving data from %s: %s", | |
1052 | netdev_get_name(port->netdev), strerror(error)); | |
72865317 BP |
1053 | } |
1054 | } | |
1055 | ofpbuf_uninit(&packet); | |
1056 | } | |
1057 | ||
1058 | static void | |
640e1b20 | 1059 | dpif_netdev_wait(struct dpif *dpif) |
72865317 | 1060 | { |
640e1b20 BP |
1061 | struct dp_netdev *dp = get_dp_netdev(dpif); |
1062 | struct dp_netdev_port *port; | |
462278db | 1063 | |
640e1b20 BP |
1064 | LIST_FOR_EACH (port, node, &dp->port_list) { |
1065 | netdev_recv_wait(port->netdev); | |
72865317 BP |
1066 | } |
1067 | } | |
1068 | ||
72865317 | 1069 | static void |
4edb9ae9 | 1070 | dp_netdev_set_dl(struct ofpbuf *packet, const struct ovs_key_ethernet *eth_key) |
72865317 BP |
1071 | { |
1072 | struct eth_header *eh = packet->l2; | |
4edb9ae9 PS |
1073 | |
1074 | memcpy(eh->eth_src, eth_key->eth_src, sizeof eh->eth_src); | |
1075 | memcpy(eh->eth_dst, eth_key->eth_dst, sizeof eh->eth_dst); | |
72865317 BP |
1076 | } |
1077 | ||
72865317 BP |
1078 | static void |
1079 | dp_netdev_output_port(struct dp_netdev *dp, struct ofpbuf *packet, | |
9b56fe13 | 1080 | uint32_t out_port) |
72865317 | 1081 | { |
2105ccc8 | 1082 | struct dp_netdev_port *p = dp->ports[out_port]; |
72865317 BP |
1083 | if (p) { |
1084 | netdev_send(p->netdev, packet); | |
1085 | } | |
1086 | } | |
1087 | ||
72865317 | 1088 | static int |
b85d8d61 | 1089 | dp_netdev_output_userspace(struct dp_netdev *dp, const struct ofpbuf *packet, |
856081f6 | 1090 | int queue_no, const struct flow *flow, uint64_t arg) |
72865317 | 1091 | { |
856081f6 | 1092 | struct dp_netdev_queue *q = &dp->queues[queue_no]; |
d88b629b | 1093 | struct dp_netdev_upcall *u; |
856081f6 BP |
1094 | struct dpif_upcall *upcall; |
1095 | struct ofpbuf *buf; | |
1096 | size_t key_len; | |
72865317 | 1097 | |
856081f6 | 1098 | if (q->head - q->tail >= MAX_QUEUE_LEN) { |
72865317 BP |
1099 | dp->n_lost++; |
1100 | return ENOBUFS; | |
1101 | } | |
1102 | ||
d88b629b BP |
1103 | u = &q->upcalls[q->head++ & QUEUE_MASK]; |
1104 | ||
1105 | buf = &u->buf; | |
1106 | ofpbuf_init(buf, ODPUTIL_FLOW_KEY_BYTES + 2 + packet->size); | |
ddbfda84 | 1107 | odp_flow_key_from_flow(buf, flow, flow->in_port); |
856081f6 BP |
1108 | key_len = buf->size; |
1109 | ofpbuf_pull(buf, key_len); | |
1110 | ofpbuf_reserve(buf, 2); | |
1111 | ofpbuf_put(buf, packet->data, packet->size); | |
1112 | ||
d88b629b | 1113 | upcall = &u->upcall; |
856081f6 BP |
1114 | upcall->type = queue_no; |
1115 | upcall->packet = buf; | |
1116 | upcall->key = buf->base; | |
1117 | upcall->key_len = key_len; | |
1118 | upcall->userdata = arg; | |
1119 | ||
72865317 BP |
1120 | return 0; |
1121 | } | |
1122 | ||
26c6b6cd BP |
1123 | static void |
1124 | dp_netdev_sample(struct dp_netdev *dp, | |
1125 | struct ofpbuf *packet, struct flow *key, | |
1126 | const struct nlattr *action) | |
1127 | { | |
1128 | const struct nlattr *subactions = NULL; | |
1129 | const struct nlattr *a; | |
1130 | size_t left; | |
1131 | ||
1132 | NL_NESTED_FOR_EACH_UNSAFE (a, left, action) { | |
1133 | int type = nl_attr_type(a); | |
1134 | ||
1135 | switch ((enum ovs_sample_attr) type) { | |
1136 | case OVS_SAMPLE_ATTR_PROBABILITY: | |
1137 | if (random_uint32() >= nl_attr_get_u32(a)) { | |
1138 | return; | |
1139 | } | |
1140 | break; | |
1141 | ||
1142 | case OVS_SAMPLE_ATTR_ACTIONS: | |
1143 | subactions = a; | |
1144 | break; | |
1145 | ||
1146 | case OVS_SAMPLE_ATTR_UNSPEC: | |
1147 | case __OVS_SAMPLE_ATTR_MAX: | |
1148 | default: | |
1149 | NOT_REACHED(); | |
1150 | } | |
1151 | } | |
1152 | ||
1153 | dp_netdev_execute_actions(dp, packet, key, nl_attr_get(subactions), | |
1154 | nl_attr_get_size(subactions)); | |
1155 | } | |
1156 | ||
98403001 BP |
1157 | static void |
1158 | dp_netdev_action_userspace(struct dp_netdev *dp, | |
1159 | struct ofpbuf *packet, struct flow *key, | |
1160 | const struct nlattr *a) | |
1161 | { | |
1162 | const struct nlattr *userdata_attr; | |
1163 | uint64_t userdata; | |
1164 | ||
1165 | userdata_attr = nl_attr_find_nested(a, OVS_USERSPACE_ATTR_USERDATA); | |
1166 | userdata = userdata_attr ? nl_attr_get_u64(userdata_attr) : 0; | |
1167 | dp_netdev_output_userspace(dp, packet, DPIF_UC_ACTION, key, userdata); | |
1168 | } | |
1169 | ||
4edb9ae9 PS |
1170 | static void |
1171 | execute_set_action(struct ofpbuf *packet, const struct nlattr *a) | |
1172 | { | |
1173 | enum ovs_key_attr type = nl_attr_type(a); | |
c97664b3 EJ |
1174 | const struct ovs_key_ipv4 *ipv4_key; |
1175 | const struct ovs_key_tcp *tcp_key; | |
1176 | const struct ovs_key_udp *udp_key; | |
1177 | ||
4edb9ae9 PS |
1178 | switch (type) { |
1179 | case OVS_KEY_ATTR_TUN_ID: | |
abff858b | 1180 | case OVS_KEY_ATTR_PRIORITY: |
c4f2731d | 1181 | case OVS_KEY_ATTR_IPV6: |
356af50b | 1182 | case OVS_KEY_ATTR_IPV4_TUNNEL: |
abff858b | 1183 | /* not implemented */ |
4edb9ae9 PS |
1184 | break; |
1185 | ||
1186 | case OVS_KEY_ATTR_ETHERNET: | |
1187 | dp_netdev_set_dl(packet, | |
1188 | nl_attr_get_unspec(a, sizeof(struct ovs_key_ethernet))); | |
1189 | break; | |
1190 | ||
1191 | case OVS_KEY_ATTR_IPV4: | |
c97664b3 EJ |
1192 | ipv4_key = nl_attr_get_unspec(a, sizeof(struct ovs_key_ipv4)); |
1193 | packet_set_ipv4(packet, ipv4_key->ipv4_src, ipv4_key->ipv4_dst, | |
1194 | ipv4_key->ipv4_tos, ipv4_key->ipv4_ttl); | |
4edb9ae9 PS |
1195 | break; |
1196 | ||
1197 | case OVS_KEY_ATTR_TCP: | |
c97664b3 EJ |
1198 | tcp_key = nl_attr_get_unspec(a, sizeof(struct ovs_key_tcp)); |
1199 | packet_set_tcp_port(packet, tcp_key->tcp_src, tcp_key->tcp_dst); | |
4edb9ae9 PS |
1200 | break; |
1201 | ||
1202 | case OVS_KEY_ATTR_UDP: | |
c97664b3 EJ |
1203 | udp_key = nl_attr_get_unspec(a, sizeof(struct ovs_key_udp)); |
1204 | packet_set_udp_port(packet, udp_key->udp_src, udp_key->udp_dst); | |
4edb9ae9 PS |
1205 | break; |
1206 | ||
1207 | case OVS_KEY_ATTR_UNSPEC: | |
fea393b1 | 1208 | case OVS_KEY_ATTR_ENCAP: |
4edb9ae9 | 1209 | case OVS_KEY_ATTR_ETHERTYPE: |
4edb9ae9 | 1210 | case OVS_KEY_ATTR_IN_PORT: |
fea393b1 | 1211 | case OVS_KEY_ATTR_VLAN: |
4edb9ae9 PS |
1212 | case OVS_KEY_ATTR_ICMP: |
1213 | case OVS_KEY_ATTR_ICMPV6: | |
1214 | case OVS_KEY_ATTR_ARP: | |
1215 | case OVS_KEY_ATTR_ND: | |
1216 | case __OVS_KEY_ATTR_MAX: | |
1217 | default: | |
1218 | NOT_REACHED(); | |
1219 | } | |
1220 | } | |
1221 | ||
1222 | static void | |
72865317 | 1223 | dp_netdev_execute_actions(struct dp_netdev *dp, |
14608a15 | 1224 | struct ofpbuf *packet, struct flow *key, |
cdee00fd | 1225 | const struct nlattr *actions, |
cf22f8cb | 1226 | size_t actions_len) |
72865317 | 1227 | { |
cdee00fd BP |
1228 | const struct nlattr *a; |
1229 | unsigned int left; | |
72865317 | 1230 | |
cdee00fd | 1231 | NL_ATTR_FOR_EACH_UNSAFE (a, left, actions, actions_len) { |
fea393b1 | 1232 | const struct ovs_action_push_vlan *vlan; |
26c6b6cd BP |
1233 | int type = nl_attr_type(a); |
1234 | ||
09ded0ad | 1235 | switch ((enum ovs_action_attr) type) { |
df2c07f4 | 1236 | case OVS_ACTION_ATTR_OUTPUT: |
cdee00fd | 1237 | dp_netdev_output_port(dp, packet, nl_attr_get_u32(a)); |
2105ccc8 | 1238 | break; |
72865317 | 1239 | |
df2c07f4 | 1240 | case OVS_ACTION_ATTR_USERSPACE: |
98403001 | 1241 | dp_netdev_action_userspace(dp, packet, key, a); |
2105ccc8 | 1242 | break; |
72865317 | 1243 | |
fea393b1 BP |
1244 | case OVS_ACTION_ATTR_PUSH_VLAN: |
1245 | vlan = nl_attr_get(a); | |
2f4ca41b | 1246 | eth_push_vlan(packet, vlan->vlan_tci); |
72865317 BP |
1247 | break; |
1248 | ||
fea393b1 | 1249 | case OVS_ACTION_ATTR_POP_VLAN: |
f4ebc25e | 1250 | eth_pop_vlan(packet); |
2105ccc8 | 1251 | break; |
72865317 | 1252 | |
4edb9ae9 PS |
1253 | case OVS_ACTION_ATTR_SET: |
1254 | execute_set_action(packet, nl_attr_get(a)); | |
2105ccc8 | 1255 | break; |
26c6b6cd BP |
1256 | |
1257 | case OVS_ACTION_ATTR_SAMPLE: | |
1258 | dp_netdev_sample(dp, packet, key, a); | |
1259 | break; | |
1260 | ||
26c6b6cd BP |
1261 | case OVS_ACTION_ATTR_UNSPEC: |
1262 | case __OVS_ACTION_ATTR_MAX: | |
1263 | NOT_REACHED(); | |
2105ccc8 BP |
1264 | } |
1265 | } | |
72865317 BP |
1266 | } |
1267 | ||
1268 | const struct dpif_class dpif_netdev_class = { | |
72865317 | 1269 | "netdev", |
2197d7ab | 1270 | dpif_netdev_enumerate, |
72865317 BP |
1271 | dpif_netdev_open, |
1272 | dpif_netdev_close, | |
7dab847a | 1273 | dpif_netdev_destroy, |
640e1b20 BP |
1274 | dpif_netdev_run, |
1275 | dpif_netdev_wait, | |
72865317 | 1276 | dpif_netdev_get_stats, |
72865317 BP |
1277 | dpif_netdev_port_add, |
1278 | dpif_netdev_port_del, | |
1279 | dpif_netdev_port_query_by_number, | |
1280 | dpif_netdev_port_query_by_name, | |
996c1b3d | 1281 | dpif_netdev_get_max_ports, |
98403001 | 1282 | NULL, /* port_get_pid */ |
b0ec0f27 BP |
1283 | dpif_netdev_port_dump_start, |
1284 | dpif_netdev_port_dump_next, | |
1285 | dpif_netdev_port_dump_done, | |
72865317 BP |
1286 | dpif_netdev_port_poll, |
1287 | dpif_netdev_port_poll_wait, | |
72865317 BP |
1288 | dpif_netdev_flow_get, |
1289 | dpif_netdev_flow_put, | |
1290 | dpif_netdev_flow_del, | |
1291 | dpif_netdev_flow_flush, | |
704a1e09 BP |
1292 | dpif_netdev_flow_dump_start, |
1293 | dpif_netdev_flow_dump_next, | |
1294 | dpif_netdev_flow_dump_done, | |
72865317 | 1295 | dpif_netdev_execute, |
6bc60024 | 1296 | NULL, /* operate */ |
a12b3ead | 1297 | dpif_netdev_recv_set, |
5bf93d67 | 1298 | dpif_netdev_queue_to_priority, |
72865317 BP |
1299 | dpif_netdev_recv, |
1300 | dpif_netdev_recv_wait, | |
1ba530f4 | 1301 | dpif_netdev_recv_purge, |
72865317 | 1302 | }; |
614c4892 | 1303 | |
0cbfe35d BP |
1304 | static void |
1305 | dpif_dummy_register__(const char *type) | |
1306 | { | |
1307 | struct dpif_class *class; | |
1308 | ||
1309 | class = xmalloc(sizeof *class); | |
1310 | *class = dpif_netdev_class; | |
1311 | class->type = xstrdup(type); | |
1312 | dp_register_provider(class); | |
1313 | } | |
1314 | ||
614c4892 | 1315 | void |
0cbfe35d | 1316 | dpif_dummy_register(bool override) |
614c4892 | 1317 | { |
0cbfe35d BP |
1318 | if (override) { |
1319 | struct sset types; | |
1320 | const char *type; | |
1321 | ||
1322 | sset_init(&types); | |
1323 | dp_enumerate_types(&types); | |
1324 | SSET_FOR_EACH (type, &types) { | |
1325 | if (!dp_unregister_provider(type)) { | |
1326 | dpif_dummy_register__(type); | |
1327 | } | |
1328 | } | |
1329 | sset_destroy(&types); | |
614c4892 | 1330 | } |
0cbfe35d BP |
1331 | |
1332 | dpif_dummy_register__("dummy"); | |
614c4892 | 1333 | } |