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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 | ||
72865317 BP |
20 | #include <ctype.h> |
21 | #include <errno.h> | |
22 | #include <fcntl.h> | |
23 | #include <inttypes.h> | |
72865317 | 24 | #include <netinet/in.h> |
9d82ec47 | 25 | #include <sys/socket.h> |
7f3adc00 | 26 | #include <net/if.h> |
cdee00fd | 27 | #include <stdint.h> |
72865317 BP |
28 | #include <stdlib.h> |
29 | #include <string.h> | |
30 | #include <sys/ioctl.h> | |
31 | #include <sys/stat.h> | |
72865317 BP |
32 | #include <unistd.h> |
33 | ||
34 | #include "csum.h" | |
614c4892 | 35 | #include "dpif.h" |
72865317 | 36 | #include "dpif-provider.h" |
614c4892 | 37 | #include "dummy.h" |
36956a7d | 38 | #include "dynamic-string.h" |
72865317 BP |
39 | #include "flow.h" |
40 | #include "hmap.h" | |
41 | #include "list.h" | |
42 | #include "netdev.h" | |
cdee00fd | 43 | #include "netlink.h" |
72865317 BP |
44 | #include "odp-util.h" |
45 | #include "ofp-print.h" | |
46 | #include "ofpbuf.h" | |
47 | #include "packets.h" | |
48 | #include "poll-loop.h" | |
26c6b6cd | 49 | #include "random.h" |
462278db | 50 | #include "shash.h" |
0cbfe35d | 51 | #include "sset.h" |
72865317 BP |
52 | #include "timeval.h" |
53 | #include "util.h" | |
72865317 | 54 | #include "vlog.h" |
5136ce49 | 55 | |
d98e6007 | 56 | VLOG_DEFINE_THIS_MODULE(dpif_netdev); |
72865317 BP |
57 | |
58 | /* Configuration parameters. */ | |
72865317 BP |
59 | enum { MAX_PORTS = 256 }; /* Maximum number of ports. */ |
60 | enum { MAX_FLOWS = 65536 }; /* Maximum number of flows in flow table. */ | |
61 | ||
62 | /* Enough headroom to add a vlan tag, plus an extra 2 bytes to allow IP | |
63 | * headers to be aligned on a 4-byte boundary. */ | |
64 | enum { DP_NETDEV_HEADROOM = 2 + VLAN_HEADER_LEN }; | |
65 | ||
856081f6 BP |
66 | /* Queues. */ |
67 | enum { N_QUEUES = 2 }; /* Number of queues for dpif_recv(). */ | |
68 | enum { MAX_QUEUE_LEN = 128 }; /* Maximum number of packets per queue. */ | |
69 | enum { QUEUE_MASK = MAX_QUEUE_LEN - 1 }; | |
70 | BUILD_ASSERT_DECL(IS_POW2(MAX_QUEUE_LEN)); | |
71 | ||
d88b629b BP |
72 | struct dp_netdev_upcall { |
73 | struct dpif_upcall upcall; /* Queued upcall information. */ | |
74 | struct ofpbuf buf; /* ofpbuf instance for upcall.packet. */ | |
75 | }; | |
76 | ||
856081f6 | 77 | struct dp_netdev_queue { |
d88b629b | 78 | struct dp_netdev_upcall upcalls[MAX_QUEUE_LEN]; |
856081f6 BP |
79 | unsigned int head, tail; |
80 | }; | |
81 | ||
72865317 BP |
82 | /* Datapath based on the network device interface from netdev.h. */ |
83 | struct dp_netdev { | |
614c4892 | 84 | const struct dpif_class *class; |
462278db | 85 | char *name; |
72865317 | 86 | int open_cnt; |
7dab847a | 87 | bool destroyed; |
72865317 | 88 | |
856081f6 | 89 | struct dp_netdev_queue queues[N_QUEUES]; |
72865317 | 90 | struct hmap flow_table; /* Flow table. */ |
72865317 BP |
91 | |
92 | /* Statistics. */ | |
72865317 BP |
93 | long long int n_hit; /* Number of flow table matches. */ |
94 | long long int n_missed; /* Number of flow table misses. */ | |
95 | long long int n_lost; /* Number of misses not passed to client. */ | |
96 | ||
97 | /* Ports. */ | |
72865317 BP |
98 | struct dp_netdev_port *ports[MAX_PORTS]; |
99 | struct list port_list; | |
100 | unsigned int serial; | |
101 | }; | |
102 | ||
103 | /* A port in a netdev-based datapath. */ | |
104 | struct dp_netdev_port { | |
105 | int port_no; /* Index into dp_netdev's 'ports'. */ | |
106 | struct list node; /* Element in dp_netdev's 'port_list'. */ | |
107 | struct netdev *netdev; | |
0cbfe35d | 108 | char *type; /* Port type as requested by user. */ |
72865317 BP |
109 | }; |
110 | ||
111 | /* A flow in dp_netdev's 'flow_table'. */ | |
112 | struct dp_netdev_flow { | |
113 | struct hmap_node node; /* Element in dp_netdev's 'flow_table'. */ | |
14608a15 | 114 | struct flow key; |
72865317 BP |
115 | |
116 | /* Statistics. */ | |
c97fb132 | 117 | long long int used; /* Last used time, in monotonic msecs. */ |
2105ccc8 BP |
118 | long long int packet_count; /* Number of packets matched. */ |
119 | long long int byte_count; /* Number of bytes matched. */ | |
7c808e39 | 120 | uint8_t tcp_flags; /* Bitwise-OR of seen tcp_flags values. */ |
72865317 BP |
121 | |
122 | /* Actions. */ | |
cdee00fd | 123 | struct nlattr *actions; |
cf22f8cb | 124 | size_t actions_len; |
72865317 BP |
125 | }; |
126 | ||
127 | /* Interface to netdev-based datapath. */ | |
128 | struct dpif_netdev { | |
129 | struct dpif dpif; | |
130 | struct dp_netdev *dp; | |
72865317 BP |
131 | unsigned int dp_serial; |
132 | }; | |
133 | ||
134 | /* All netdev-based datapaths. */ | |
462278db | 135 | static struct shash dp_netdevs = SHASH_INITIALIZER(&dp_netdevs); |
72865317 BP |
136 | |
137 | /* Maximum port MTU seen so far. */ | |
138 | static int max_mtu = ETH_PAYLOAD_MAX; | |
139 | ||
9b56fe13 | 140 | static int get_port_by_number(struct dp_netdev *, uint32_t port_no, |
72865317 BP |
141 | struct dp_netdev_port **portp); |
142 | static int get_port_by_name(struct dp_netdev *, const char *devname, | |
143 | struct dp_netdev_port **portp); | |
144 | static void dp_netdev_free(struct dp_netdev *); | |
145 | static void dp_netdev_flow_flush(struct dp_netdev *); | |
c3827f61 | 146 | static int do_add_port(struct dp_netdev *, const char *devname, |
9b56fe13 JP |
147 | const char *type, uint32_t port_no); |
148 | static int do_del_port(struct dp_netdev *, uint32_t port_no); | |
614c4892 BP |
149 | static int dpif_netdev_open(const struct dpif_class *, const char *name, |
150 | bool create, struct dpif **); | |
b85d8d61 | 151 | static int dp_netdev_output_userspace(struct dp_netdev *, const struct ofpbuf *, |
856081f6 BP |
152 | int queue_no, const struct flow *, |
153 | uint64_t arg); | |
4edb9ae9 PS |
154 | static void dp_netdev_execute_actions(struct dp_netdev *, |
155 | struct ofpbuf *, struct flow *, | |
156 | const struct nlattr *actions, | |
157 | size_t actions_len); | |
72865317 BP |
158 | |
159 | static struct dpif_netdev * | |
160 | dpif_netdev_cast(const struct dpif *dpif) | |
161 | { | |
cb22974d | 162 | ovs_assert(dpif->dpif_class->open == dpif_netdev_open); |
72865317 BP |
163 | return CONTAINER_OF(dpif, struct dpif_netdev, dpif); |
164 | } | |
165 | ||
166 | static struct dp_netdev * | |
167 | get_dp_netdev(const struct dpif *dpif) | |
168 | { | |
169 | return dpif_netdev_cast(dpif)->dp; | |
170 | } | |
171 | ||
2197d7ab GL |
172 | static int |
173 | dpif_netdev_enumerate(struct sset *all_dps) | |
174 | { | |
175 | struct shash_node *node; | |
176 | ||
177 | SHASH_FOR_EACH(node, &dp_netdevs) { | |
178 | sset_add(all_dps, node->name); | |
179 | } | |
180 | return 0; | |
181 | } | |
182 | ||
0aeaabc8 JP |
183 | static const char * |
184 | dpif_netdev_port_open_type(const struct dpif_class *class, const char *type) | |
185 | { | |
186 | return strcmp(type, "internal") ? type | |
187 | : class != &dpif_netdev_class ? "dummy" | |
188 | : "tap"; | |
189 | } | |
190 | ||
72865317 BP |
191 | static struct dpif * |
192 | create_dpif_netdev(struct dp_netdev *dp) | |
193 | { | |
462278db | 194 | uint16_t netflow_id = hash_string(dp->name, 0); |
72865317 | 195 | struct dpif_netdev *dpif; |
72865317 BP |
196 | |
197 | dp->open_cnt++; | |
198 | ||
72865317 | 199 | dpif = xmalloc(sizeof *dpif); |
614c4892 | 200 | dpif_init(&dpif->dpif, dp->class, dp->name, netflow_id >> 8, netflow_id); |
72865317 | 201 | dpif->dp = dp; |
72865317 | 202 | dpif->dp_serial = dp->serial; |
72865317 BP |
203 | |
204 | return &dpif->dpif; | |
205 | } | |
206 | ||
e44768b7 JP |
207 | static int |
208 | choose_port(struct dp_netdev *dp, const char *name) | |
209 | { | |
210 | int port_no; | |
211 | ||
212 | if (dp->class != &dpif_netdev_class) { | |
213 | const char *p; | |
214 | int start_no = 0; | |
215 | ||
216 | /* If the port name begins with "br", start the number search at | |
217 | * 100 to make writing tests easier. */ | |
218 | if (!strncmp(name, "br", 2)) { | |
219 | start_no = 100; | |
220 | } | |
221 | ||
222 | /* If the port name contains a number, try to assign that port number. | |
223 | * This can make writing unit tests easier because port numbers are | |
224 | * predictable. */ | |
225 | for (p = name; *p != '\0'; p++) { | |
226 | if (isdigit((unsigned char) *p)) { | |
227 | port_no = start_no + strtol(p, NULL, 10); | |
228 | if (port_no > 0 && port_no < MAX_PORTS | |
229 | && !dp->ports[port_no]) { | |
230 | return port_no; | |
231 | } | |
232 | break; | |
233 | } | |
234 | } | |
235 | } | |
236 | ||
237 | for (port_no = 1; port_no < MAX_PORTS; port_no++) { | |
238 | if (!dp->ports[port_no]) { | |
239 | return port_no; | |
240 | } | |
241 | } | |
242 | ||
243 | return -1; | |
244 | } | |
245 | ||
72865317 | 246 | static int |
614c4892 BP |
247 | create_dp_netdev(const char *name, const struct dpif_class *class, |
248 | struct dp_netdev **dpp) | |
72865317 BP |
249 | { |
250 | struct dp_netdev *dp; | |
251 | int error; | |
252 | int i; | |
253 | ||
462278db | 254 | dp = xzalloc(sizeof *dp); |
614c4892 | 255 | dp->class = class; |
462278db | 256 | dp->name = xstrdup(name); |
72865317 | 257 | dp->open_cnt = 0; |
72865317 | 258 | for (i = 0; i < N_QUEUES; i++) { |
856081f6 | 259 | dp->queues[i].head = dp->queues[i].tail = 0; |
72865317 BP |
260 | } |
261 | hmap_init(&dp->flow_table); | |
72865317 | 262 | list_init(&dp->port_list); |
e44768b7 | 263 | |
29c743b6 | 264 | error = do_add_port(dp, name, "internal", OVSP_LOCAL); |
72865317 BP |
265 | if (error) { |
266 | dp_netdev_free(dp); | |
462278db | 267 | return error; |
72865317 BP |
268 | } |
269 | ||
462278db BP |
270 | shash_add(&dp_netdevs, name, dp); |
271 | ||
272 | *dpp = dp; | |
72865317 BP |
273 | return 0; |
274 | } | |
275 | ||
276 | static int | |
614c4892 | 277 | dpif_netdev_open(const struct dpif_class *class, const char *name, |
4a387741 | 278 | bool create, struct dpif **dpifp) |
72865317 | 279 | { |
462278db BP |
280 | struct dp_netdev *dp; |
281 | ||
282 | dp = shash_find_data(&dp_netdevs, name); | |
283 | if (!dp) { | |
284 | if (!create) { | |
285 | return ENODEV; | |
72865317 | 286 | } else { |
614c4892 | 287 | int error = create_dp_netdev(name, class, &dp); |
462278db BP |
288 | if (error) { |
289 | return error; | |
72865317 | 290 | } |
cb22974d | 291 | ovs_assert(dp != NULL); |
72865317 BP |
292 | } |
293 | } else { | |
614c4892 BP |
294 | if (dp->class != class) { |
295 | return EINVAL; | |
296 | } else if (create) { | |
462278db | 297 | return EEXIST; |
72865317 BP |
298 | } |
299 | } | |
462278db BP |
300 | |
301 | *dpifp = create_dpif_netdev(dp); | |
302 | return 0; | |
72865317 BP |
303 | } |
304 | ||
305 | static void | |
1ba530f4 | 306 | dp_netdev_purge_queues(struct dp_netdev *dp) |
72865317 BP |
307 | { |
308 | int i; | |
309 | ||
72865317 | 310 | for (i = 0; i < N_QUEUES; i++) { |
856081f6 | 311 | struct dp_netdev_queue *q = &dp->queues[i]; |
856081f6 | 312 | |
1ba530f4 | 313 | while (q->tail != q->head) { |
d88b629b BP |
314 | struct dp_netdev_upcall *u = &q->upcalls[q->tail++ & QUEUE_MASK]; |
315 | ofpbuf_uninit(&u->buf); | |
856081f6 | 316 | } |
72865317 | 317 | } |
1ba530f4 BP |
318 | } |
319 | ||
320 | static void | |
321 | dp_netdev_free(struct dp_netdev *dp) | |
322 | { | |
4ad28026 BP |
323 | struct dp_netdev_port *port, *next; |
324 | ||
1ba530f4 | 325 | dp_netdev_flow_flush(dp); |
4ad28026 | 326 | LIST_FOR_EACH_SAFE (port, next, node, &dp->port_list) { |
1ba530f4 BP |
327 | do_del_port(dp, port->port_no); |
328 | } | |
329 | dp_netdev_purge_queues(dp); | |
72865317 | 330 | hmap_destroy(&dp->flow_table); |
462278db | 331 | free(dp->name); |
72865317 BP |
332 | free(dp); |
333 | } | |
334 | ||
335 | static void | |
336 | dpif_netdev_close(struct dpif *dpif) | |
337 | { | |
338 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
cb22974d | 339 | ovs_assert(dp->open_cnt > 0); |
7dab847a | 340 | if (--dp->open_cnt == 0 && dp->destroyed) { |
462278db | 341 | shash_find_and_delete(&dp_netdevs, dp->name); |
72865317 BP |
342 | dp_netdev_free(dp); |
343 | } | |
344 | free(dpif); | |
345 | } | |
346 | ||
347 | static int | |
7dab847a | 348 | dpif_netdev_destroy(struct dpif *dpif) |
72865317 BP |
349 | { |
350 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
7dab847a | 351 | dp->destroyed = true; |
72865317 BP |
352 | return 0; |
353 | } | |
354 | ||
355 | static int | |
a8d9304d | 356 | dpif_netdev_get_stats(const struct dpif *dpif, struct dpif_dp_stats *stats) |
72865317 BP |
357 | { |
358 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
f180c2e2 | 359 | stats->n_flows = hmap_count(&dp->flow_table); |
72865317 BP |
360 | stats->n_hit = dp->n_hit; |
361 | stats->n_missed = dp->n_missed; | |
362 | stats->n_lost = dp->n_lost; | |
72865317 BP |
363 | return 0; |
364 | } | |
365 | ||
72865317 | 366 | static int |
c3827f61 | 367 | do_add_port(struct dp_netdev *dp, const char *devname, const char *type, |
9b56fe13 | 368 | uint32_t port_no) |
72865317 | 369 | { |
72865317 BP |
370 | struct dp_netdev_port *port; |
371 | struct netdev *netdev; | |
0cbfe35d | 372 | const char *open_type; |
72865317 BP |
373 | int mtu; |
374 | int error; | |
375 | ||
376 | /* XXX reject devices already in some dp_netdev. */ | |
377 | ||
378 | /* Open and validate network device. */ | |
0aeaabc8 | 379 | open_type = dpif_netdev_port_open_type(dp->class, type); |
0cbfe35d | 380 | error = netdev_open(devname, open_type, &netdev); |
72865317 BP |
381 | if (error) { |
382 | return error; | |
383 | } | |
384 | /* XXX reject loopback devices */ | |
385 | /* XXX reject non-Ethernet devices */ | |
386 | ||
7b6b0ef4 BP |
387 | error = netdev_listen(netdev); |
388 | if (error) { | |
389 | VLOG_ERR("%s: cannot receive packets on this network device (%s)", | |
390 | devname, strerror(errno)); | |
391 | netdev_close(netdev); | |
392 | return error; | |
393 | } | |
394 | ||
72865317 BP |
395 | error = netdev_turn_flags_on(netdev, NETDEV_PROMISC, false); |
396 | if (error) { | |
397 | netdev_close(netdev); | |
398 | return error; | |
399 | } | |
400 | ||
401 | port = xmalloc(sizeof *port); | |
402 | port->port_no = port_no; | |
403 | port->netdev = netdev; | |
0cbfe35d | 404 | port->type = xstrdup(type); |
72865317 | 405 | |
9b020780 PS |
406 | error = netdev_get_mtu(netdev, &mtu); |
407 | if (!error) { | |
72865317 BP |
408 | max_mtu = mtu; |
409 | } | |
410 | ||
411 | list_push_back(&dp->port_list, &port->node); | |
412 | dp->ports[port_no] = port; | |
72865317 BP |
413 | dp->serial++; |
414 | ||
415 | return 0; | |
416 | } | |
417 | ||
247527db BP |
418 | static int |
419 | dpif_netdev_port_add(struct dpif *dpif, struct netdev *netdev, | |
9b56fe13 | 420 | uint32_t *port_nop) |
247527db BP |
421 | { |
422 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
423 | int port_no; | |
424 | ||
9b56fe13 | 425 | if (*port_nop != UINT32_MAX) { |
232dfa4a JP |
426 | if (*port_nop >= MAX_PORTS) { |
427 | return EFBIG; | |
428 | } else if (dp->ports[*port_nop]) { | |
429 | return EBUSY; | |
430 | } | |
431 | port_no = *port_nop; | |
432 | } else { | |
e44768b7 | 433 | port_no = choose_port(dp, netdev_get_name(netdev)); |
232dfa4a | 434 | } |
247527db BP |
435 | if (port_no >= 0) { |
436 | *port_nop = port_no; | |
437 | return do_add_port(dp, netdev_get_name(netdev), | |
438 | netdev_get_type(netdev), port_no); | |
439 | } | |
3c71830a | 440 | return EFBIG; |
72865317 BP |
441 | } |
442 | ||
443 | static int | |
9b56fe13 | 444 | dpif_netdev_port_del(struct dpif *dpif, uint32_t port_no) |
72865317 BP |
445 | { |
446 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
df2c07f4 | 447 | return port_no == OVSP_LOCAL ? EINVAL : do_del_port(dp, port_no); |
72865317 BP |
448 | } |
449 | ||
450 | static bool | |
9b56fe13 | 451 | is_valid_port_number(uint32_t port_no) |
72865317 BP |
452 | { |
453 | return port_no < MAX_PORTS; | |
454 | } | |
455 | ||
456 | static int | |
457 | get_port_by_number(struct dp_netdev *dp, | |
9b56fe13 | 458 | uint32_t port_no, struct dp_netdev_port **portp) |
72865317 BP |
459 | { |
460 | if (!is_valid_port_number(port_no)) { | |
461 | *portp = NULL; | |
462 | return EINVAL; | |
463 | } else { | |
464 | *portp = dp->ports[port_no]; | |
465 | return *portp ? 0 : ENOENT; | |
466 | } | |
467 | } | |
468 | ||
469 | static int | |
470 | get_port_by_name(struct dp_netdev *dp, | |
471 | const char *devname, struct dp_netdev_port **portp) | |
472 | { | |
473 | struct dp_netdev_port *port; | |
474 | ||
4e8e4213 | 475 | LIST_FOR_EACH (port, node, &dp->port_list) { |
72865317 BP |
476 | if (!strcmp(netdev_get_name(port->netdev), devname)) { |
477 | *portp = port; | |
478 | return 0; | |
479 | } | |
480 | } | |
481 | return ENOENT; | |
482 | } | |
483 | ||
484 | static int | |
9b56fe13 | 485 | do_del_port(struct dp_netdev *dp, uint32_t port_no) |
72865317 BP |
486 | { |
487 | struct dp_netdev_port *port; | |
6c88d577 | 488 | char *name; |
72865317 BP |
489 | int error; |
490 | ||
491 | error = get_port_by_number(dp, port_no, &port); | |
492 | if (error) { | |
493 | return error; | |
494 | } | |
495 | ||
496 | list_remove(&port->node); | |
497 | dp->ports[port->port_no] = NULL; | |
72865317 BP |
498 | dp->serial++; |
499 | ||
6c88d577 | 500 | name = xstrdup(netdev_get_name(port->netdev)); |
72865317 | 501 | netdev_close(port->netdev); |
0cbfe35d | 502 | free(port->type); |
149f577a | 503 | |
6c88d577 | 504 | free(name); |
72865317 BP |
505 | free(port); |
506 | ||
507 | return 0; | |
508 | } | |
509 | ||
510 | static void | |
4c738a8d BP |
511 | answer_port_query(const struct dp_netdev_port *port, |
512 | struct dpif_port *dpif_port) | |
72865317 | 513 | { |
4c738a8d | 514 | dpif_port->name = xstrdup(netdev_get_name(port->netdev)); |
0cbfe35d | 515 | dpif_port->type = xstrdup(port->type); |
4c738a8d | 516 | dpif_port->port_no = port->port_no; |
72865317 BP |
517 | } |
518 | ||
519 | static int | |
9b56fe13 | 520 | dpif_netdev_port_query_by_number(const struct dpif *dpif, uint32_t port_no, |
4c738a8d | 521 | struct dpif_port *dpif_port) |
72865317 BP |
522 | { |
523 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
524 | struct dp_netdev_port *port; | |
525 | int error; | |
526 | ||
527 | error = get_port_by_number(dp, port_no, &port); | |
4afba28d | 528 | if (!error && dpif_port) { |
4c738a8d | 529 | answer_port_query(port, dpif_port); |
72865317 BP |
530 | } |
531 | return error; | |
532 | } | |
533 | ||
534 | static int | |
535 | dpif_netdev_port_query_by_name(const struct dpif *dpif, const char *devname, | |
4c738a8d | 536 | struct dpif_port *dpif_port) |
72865317 BP |
537 | { |
538 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
539 | struct dp_netdev_port *port; | |
540 | int error; | |
541 | ||
542 | error = get_port_by_name(dp, devname, &port); | |
4afba28d | 543 | if (!error && dpif_port) { |
4c738a8d | 544 | answer_port_query(port, dpif_port); |
72865317 BP |
545 | } |
546 | return error; | |
547 | } | |
548 | ||
996c1b3d BP |
549 | static int |
550 | dpif_netdev_get_max_ports(const struct dpif *dpif OVS_UNUSED) | |
551 | { | |
552 | return MAX_PORTS; | |
553 | } | |
554 | ||
72865317 BP |
555 | static void |
556 | dp_netdev_free_flow(struct dp_netdev *dp, struct dp_netdev_flow *flow) | |
557 | { | |
558 | hmap_remove(&dp->flow_table, &flow->node); | |
559 | free(flow->actions); | |
560 | free(flow); | |
561 | } | |
562 | ||
563 | static void | |
564 | dp_netdev_flow_flush(struct dp_netdev *dp) | |
565 | { | |
566 | struct dp_netdev_flow *flow, *next; | |
567 | ||
4e8e4213 | 568 | HMAP_FOR_EACH_SAFE (flow, next, node, &dp->flow_table) { |
72865317 BP |
569 | dp_netdev_free_flow(dp, flow); |
570 | } | |
571 | } | |
572 | ||
573 | static int | |
574 | dpif_netdev_flow_flush(struct dpif *dpif) | |
575 | { | |
576 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
577 | dp_netdev_flow_flush(dp); | |
578 | return 0; | |
579 | } | |
580 | ||
b0ec0f27 BP |
581 | struct dp_netdev_port_state { |
582 | uint32_t port_no; | |
4c738a8d | 583 | char *name; |
b0ec0f27 BP |
584 | }; |
585 | ||
586 | static int | |
587 | dpif_netdev_port_dump_start(const struct dpif *dpif OVS_UNUSED, void **statep) | |
588 | { | |
589 | *statep = xzalloc(sizeof(struct dp_netdev_port_state)); | |
590 | return 0; | |
591 | } | |
592 | ||
72865317 | 593 | static int |
b0ec0f27 | 594 | dpif_netdev_port_dump_next(const struct dpif *dpif, void *state_, |
4c738a8d | 595 | struct dpif_port *dpif_port) |
72865317 | 596 | { |
b0ec0f27 | 597 | struct dp_netdev_port_state *state = state_; |
72865317 | 598 | struct dp_netdev *dp = get_dp_netdev(dpif); |
b0ec0f27 | 599 | uint32_t port_no; |
72865317 | 600 | |
b0ec0f27 BP |
601 | for (port_no = state->port_no; port_no < MAX_PORTS; port_no++) { |
602 | struct dp_netdev_port *port = dp->ports[port_no]; | |
603 | if (port) { | |
4c738a8d BP |
604 | free(state->name); |
605 | state->name = xstrdup(netdev_get_name(port->netdev)); | |
606 | dpif_port->name = state->name; | |
0cbfe35d | 607 | dpif_port->type = port->type; |
4c738a8d | 608 | dpif_port->port_no = port->port_no; |
b0ec0f27 BP |
609 | state->port_no = port_no + 1; |
610 | return 0; | |
72865317 | 611 | } |
72865317 | 612 | } |
b0ec0f27 BP |
613 | return EOF; |
614 | } | |
615 | ||
616 | static int | |
4c738a8d | 617 | dpif_netdev_port_dump_done(const struct dpif *dpif OVS_UNUSED, void *state_) |
b0ec0f27 | 618 | { |
4c738a8d BP |
619 | struct dp_netdev_port_state *state = state_; |
620 | free(state->name); | |
b0ec0f27 BP |
621 | free(state); |
622 | return 0; | |
72865317 BP |
623 | } |
624 | ||
625 | static int | |
67a4917b | 626 | dpif_netdev_port_poll(const struct dpif *dpif_, char **devnamep OVS_UNUSED) |
72865317 BP |
627 | { |
628 | struct dpif_netdev *dpif = dpif_netdev_cast(dpif_); | |
629 | if (dpif->dp_serial != dpif->dp->serial) { | |
630 | dpif->dp_serial = dpif->dp->serial; | |
631 | return ENOBUFS; | |
632 | } else { | |
633 | return EAGAIN; | |
634 | } | |
635 | } | |
636 | ||
637 | static void | |
638 | dpif_netdev_port_poll_wait(const struct dpif *dpif_) | |
639 | { | |
640 | struct dpif_netdev *dpif = dpif_netdev_cast(dpif_); | |
641 | if (dpif->dp_serial != dpif->dp->serial) { | |
642 | poll_immediate_wake(); | |
643 | } | |
644 | } | |
645 | ||
72865317 | 646 | static struct dp_netdev_flow * |
14608a15 | 647 | dp_netdev_lookup_flow(const struct dp_netdev *dp, const struct flow *key) |
72865317 BP |
648 | { |
649 | struct dp_netdev_flow *flow; | |
650 | ||
4e8e4213 | 651 | HMAP_FOR_EACH_WITH_HASH (flow, node, flow_hash(key, 0), &dp->flow_table) { |
72865317 BP |
652 | if (flow_equal(&flow->key, key)) { |
653 | return flow; | |
654 | } | |
655 | } | |
656 | return NULL; | |
657 | } | |
658 | ||
659 | static void | |
c97fb132 | 660 | get_dpif_flow_stats(struct dp_netdev_flow *flow, struct dpif_flow_stats *stats) |
feebdea2 BP |
661 | { |
662 | stats->n_packets = flow->packet_count; | |
663 | stats->n_bytes = flow->byte_count; | |
c97fb132 | 664 | stats->used = flow->used; |
734ec5ec | 665 | stats->tcp_flags = flow->tcp_flags; |
72865317 BP |
666 | } |
667 | ||
36956a7d BP |
668 | static int |
669 | dpif_netdev_flow_from_nlattrs(const struct nlattr *key, uint32_t key_len, | |
670 | struct flow *flow) | |
671 | { | |
0135dc8b | 672 | if (odp_flow_key_to_flow(key, key_len, flow) != ODP_FIT_PERFECT) { |
36956a7d BP |
673 | /* This should not happen: it indicates that odp_flow_key_from_flow() |
674 | * and odp_flow_key_to_flow() disagree on the acceptable form of a | |
675 | * flow. Log the problem as an error, with enough details to enable | |
676 | * debugging. */ | |
677 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
678 | ||
679 | if (!VLOG_DROP_ERR(&rl)) { | |
680 | struct ds s; | |
681 | ||
682 | ds_init(&s); | |
683 | odp_flow_key_format(key, key_len, &s); | |
684 | VLOG_ERR("internal error parsing flow key %s", ds_cstr(&s)); | |
685 | ds_destroy(&s); | |
686 | } | |
687 | ||
688 | return EINVAL; | |
689 | } | |
690 | ||
18886b60 BP |
691 | if (flow->in_port < OFPP_MAX |
692 | ? flow->in_port >= MAX_PORTS | |
693 | : flow->in_port != OFPP_LOCAL && flow->in_port != OFPP_NONE) { | |
694 | return EINVAL; | |
695 | } | |
696 | ||
36956a7d BP |
697 | return 0; |
698 | } | |
699 | ||
72865317 | 700 | static int |
693c4a01 | 701 | dpif_netdev_flow_get(const struct dpif *dpif, |
feebdea2 | 702 | const struct nlattr *nl_key, size_t nl_key_len, |
c97fb132 | 703 | struct ofpbuf **actionsp, struct dpif_flow_stats *stats) |
72865317 BP |
704 | { |
705 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
bc4a05c6 BP |
706 | struct dp_netdev_flow *flow; |
707 | struct flow key; | |
708 | int error; | |
36956a7d | 709 | |
feebdea2 | 710 | error = dpif_netdev_flow_from_nlattrs(nl_key, nl_key_len, &key); |
bc4a05c6 BP |
711 | if (error) { |
712 | return error; | |
713 | } | |
14608a15 | 714 | |
bc4a05c6 BP |
715 | flow = dp_netdev_lookup_flow(dp, &key); |
716 | if (!flow) { | |
717 | return ENOENT; | |
72865317 | 718 | } |
bc4a05c6 | 719 | |
feebdea2 | 720 | if (stats) { |
c97fb132 | 721 | get_dpif_flow_stats(flow, stats); |
feebdea2 BP |
722 | } |
723 | if (actionsp) { | |
724 | *actionsp = ofpbuf_clone_data(flow->actions, flow->actions_len); | |
725 | } | |
72865317 BP |
726 | return 0; |
727 | } | |
728 | ||
72865317 | 729 | static int |
feebdea2 BP |
730 | set_flow_actions(struct dp_netdev_flow *flow, |
731 | const struct nlattr *actions, size_t actions_len) | |
72865317 | 732 | { |
feebdea2 BP |
733 | flow->actions = xrealloc(flow->actions, actions_len); |
734 | flow->actions_len = actions_len; | |
735 | memcpy(flow->actions, actions, actions_len); | |
72865317 BP |
736 | return 0; |
737 | } | |
738 | ||
739 | static int | |
e1fef0f9 AS |
740 | dp_netdev_flow_add(struct dp_netdev *dp, const struct flow *key, |
741 | const struct nlattr *actions, size_t actions_len) | |
72865317 | 742 | { |
72865317 BP |
743 | struct dp_netdev_flow *flow; |
744 | int error; | |
745 | ||
ec6fde61 | 746 | flow = xzalloc(sizeof *flow); |
36956a7d | 747 | flow->key = *key; |
72865317 | 748 | |
feebdea2 | 749 | error = set_flow_actions(flow, actions, actions_len); |
72865317 BP |
750 | if (error) { |
751 | free(flow); | |
752 | return error; | |
753 | } | |
754 | ||
755 | hmap_insert(&dp->flow_table, &flow->node, flow_hash(&flow->key, 0)); | |
756 | return 0; | |
757 | } | |
758 | ||
759 | static void | |
760 | clear_stats(struct dp_netdev_flow *flow) | |
761 | { | |
c97fb132 | 762 | flow->used = 0; |
72865317 BP |
763 | flow->packet_count = 0; |
764 | flow->byte_count = 0; | |
734ec5ec | 765 | flow->tcp_flags = 0; |
72865317 BP |
766 | } |
767 | ||
768 | static int | |
89625d1e | 769 | dpif_netdev_flow_put(struct dpif *dpif, const struct dpif_flow_put *put) |
72865317 BP |
770 | { |
771 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
772 | struct dp_netdev_flow *flow; | |
14608a15 | 773 | struct flow key; |
36956a7d BP |
774 | int error; |
775 | ||
89625d1e | 776 | error = dpif_netdev_flow_from_nlattrs(put->key, put->key_len, &key); |
36956a7d BP |
777 | if (error) { |
778 | return error; | |
779 | } | |
72865317 | 780 | |
14608a15 | 781 | flow = dp_netdev_lookup_flow(dp, &key); |
72865317 | 782 | if (!flow) { |
89625d1e | 783 | if (put->flags & DPIF_FP_CREATE) { |
72865317 | 784 | if (hmap_count(&dp->flow_table) < MAX_FLOWS) { |
89625d1e BP |
785 | if (put->stats) { |
786 | memset(put->stats, 0, sizeof *put->stats); | |
feebdea2 | 787 | } |
e1fef0f9 AS |
788 | return dp_netdev_flow_add(dp, &key, put->actions, |
789 | put->actions_len); | |
72865317 | 790 | } else { |
3c71830a | 791 | return EFBIG; |
72865317 BP |
792 | } |
793 | } else { | |
794 | return ENOENT; | |
795 | } | |
796 | } else { | |
89625d1e BP |
797 | if (put->flags & DPIF_FP_MODIFY) { |
798 | int error = set_flow_actions(flow, put->actions, put->actions_len); | |
feebdea2 | 799 | if (!error) { |
89625d1e BP |
800 | if (put->stats) { |
801 | get_dpif_flow_stats(flow, put->stats); | |
feebdea2 | 802 | } |
89625d1e | 803 | if (put->flags & DPIF_FP_ZERO_STATS) { |
feebdea2 BP |
804 | clear_stats(flow); |
805 | } | |
72865317 BP |
806 | } |
807 | return error; | |
808 | } else { | |
809 | return EEXIST; | |
810 | } | |
811 | } | |
812 | } | |
813 | ||
72865317 | 814 | static int |
b99d3cee | 815 | dpif_netdev_flow_del(struct dpif *dpif, const struct dpif_flow_del *del) |
72865317 BP |
816 | { |
817 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
818 | struct dp_netdev_flow *flow; | |
14608a15 | 819 | struct flow key; |
36956a7d BP |
820 | int error; |
821 | ||
b99d3cee | 822 | error = dpif_netdev_flow_from_nlattrs(del->key, del->key_len, &key); |
36956a7d BP |
823 | if (error) { |
824 | return error; | |
825 | } | |
72865317 | 826 | |
14608a15 | 827 | flow = dp_netdev_lookup_flow(dp, &key); |
72865317 | 828 | if (flow) { |
b99d3cee BP |
829 | if (del->stats) { |
830 | get_dpif_flow_stats(flow, del->stats); | |
feebdea2 | 831 | } |
72865317 BP |
832 | dp_netdev_free_flow(dp, flow); |
833 | return 0; | |
834 | } else { | |
835 | return ENOENT; | |
836 | } | |
837 | } | |
838 | ||
704a1e09 BP |
839 | struct dp_netdev_flow_state { |
840 | uint32_t bucket; | |
841 | uint32_t offset; | |
feebdea2 | 842 | struct nlattr *actions; |
19cf4069 | 843 | struct odputil_keybuf keybuf; |
c97fb132 | 844 | struct dpif_flow_stats stats; |
704a1e09 BP |
845 | }; |
846 | ||
72865317 | 847 | static int |
704a1e09 | 848 | dpif_netdev_flow_dump_start(const struct dpif *dpif OVS_UNUSED, void **statep) |
72865317 | 849 | { |
feebdea2 BP |
850 | struct dp_netdev_flow_state *state; |
851 | ||
852 | *statep = state = xmalloc(sizeof *state); | |
853 | state->bucket = 0; | |
854 | state->offset = 0; | |
855 | state->actions = NULL; | |
704a1e09 BP |
856 | return 0; |
857 | } | |
858 | ||
859 | static int | |
860 | dpif_netdev_flow_dump_next(const struct dpif *dpif, void *state_, | |
feebdea2 BP |
861 | const struct nlattr **key, size_t *key_len, |
862 | const struct nlattr **actions, size_t *actions_len, | |
c97fb132 | 863 | const struct dpif_flow_stats **stats) |
704a1e09 BP |
864 | { |
865 | struct dp_netdev_flow_state *state = state_; | |
72865317 BP |
866 | struct dp_netdev *dp = get_dp_netdev(dpif); |
867 | struct dp_netdev_flow *flow; | |
704a1e09 | 868 | struct hmap_node *node; |
14608a15 | 869 | |
704a1e09 BP |
870 | node = hmap_at_position(&dp->flow_table, &state->bucket, &state->offset); |
871 | if (!node) { | |
872 | return EOF; | |
72865317 | 873 | } |
704a1e09 BP |
874 | |
875 | flow = CONTAINER_OF(node, struct dp_netdev_flow, node); | |
36956a7d | 876 | |
feebdea2 BP |
877 | if (key) { |
878 | struct ofpbuf buf; | |
879 | ||
19cf4069 | 880 | ofpbuf_use_stack(&buf, &state->keybuf, sizeof state->keybuf); |
ddbfda84 | 881 | odp_flow_key_from_flow(&buf, &flow->key, flow->key.in_port); |
36956a7d | 882 | |
feebdea2 BP |
883 | *key = buf.data; |
884 | *key_len = buf.size; | |
885 | } | |
886 | ||
887 | if (actions) { | |
888 | free(state->actions); | |
889 | state->actions = xmemdup(flow->actions, flow->actions_len); | |
890 | ||
891 | *actions = state->actions; | |
892 | *actions_len = flow->actions_len; | |
893 | } | |
894 | ||
895 | if (stats) { | |
c97fb132 | 896 | get_dpif_flow_stats(flow, &state->stats); |
feebdea2 BP |
897 | *stats = &state->stats; |
898 | } | |
704a1e09 BP |
899 | |
900 | return 0; | |
901 | } | |
902 | ||
903 | static int | |
feebdea2 | 904 | dpif_netdev_flow_dump_done(const struct dpif *dpif OVS_UNUSED, void *state_) |
704a1e09 | 905 | { |
feebdea2 BP |
906 | struct dp_netdev_flow_state *state = state_; |
907 | ||
908 | free(state->actions); | |
704a1e09 BP |
909 | free(state); |
910 | return 0; | |
72865317 BP |
911 | } |
912 | ||
913 | static int | |
89625d1e | 914 | dpif_netdev_execute(struct dpif *dpif, const struct dpif_execute *execute) |
72865317 BP |
915 | { |
916 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
917 | struct ofpbuf copy; | |
ae412e7d | 918 | struct flow key; |
72865317 BP |
919 | int error; |
920 | ||
89625d1e BP |
921 | if (execute->packet->size < ETH_HEADER_LEN || |
922 | execute->packet->size > UINT16_MAX) { | |
72865317 BP |
923 | return EINVAL; |
924 | } | |
925 | ||
109ee281 | 926 | /* Make a deep copy of 'packet', because we might modify its data. */ |
89625d1e | 927 | ofpbuf_init(©, DP_NETDEV_HEADROOM + execute->packet->size); |
109ee281 | 928 | ofpbuf_reserve(©, DP_NETDEV_HEADROOM); |
89625d1e | 929 | ofpbuf_put(©, execute->packet->data, execute->packet->size); |
80e5eed9 | 930 | |
72e8bf28 | 931 | flow_extract(©, 0, 0, NULL, -1, &key); |
89625d1e BP |
932 | error = dpif_netdev_flow_from_nlattrs(execute->key, execute->key_len, |
933 | &key); | |
18886b60 | 934 | if (!error) { |
4edb9ae9 | 935 | dp_netdev_execute_actions(dp, ©, &key, |
89625d1e | 936 | execute->actions, execute->actions_len); |
18886b60 | 937 | } |
109ee281 BP |
938 | |
939 | ofpbuf_uninit(©); | |
72865317 BP |
940 | return error; |
941 | } | |
942 | ||
943 | static int | |
a12b3ead | 944 | dpif_netdev_recv_set(struct dpif *dpif OVS_UNUSED, bool enable OVS_UNUSED) |
72865317 | 945 | { |
82272ede | 946 | return 0; |
72865317 BP |
947 | } |
948 | ||
5bf93d67 EJ |
949 | static int |
950 | dpif_netdev_queue_to_priority(const struct dpif *dpif OVS_UNUSED, | |
951 | uint32_t queue_id, uint32_t *priority) | |
952 | { | |
953 | *priority = queue_id; | |
954 | return 0; | |
955 | } | |
956 | ||
856081f6 | 957 | static struct dp_netdev_queue * |
72865317 BP |
958 | find_nonempty_queue(struct dpif *dpif) |
959 | { | |
72865317 | 960 | struct dp_netdev *dp = get_dp_netdev(dpif); |
72865317 BP |
961 | int i; |
962 | ||
963 | for (i = 0; i < N_QUEUES; i++) { | |
856081f6 | 964 | struct dp_netdev_queue *q = &dp->queues[i]; |
a12b3ead | 965 | if (q->head != q->tail) { |
856081f6 | 966 | return q; |
72865317 BP |
967 | } |
968 | } | |
856081f6 | 969 | return NULL; |
72865317 BP |
970 | } |
971 | ||
972 | static int | |
90a7c55e BP |
973 | dpif_netdev_recv(struct dpif *dpif, struct dpif_upcall *upcall, |
974 | struct ofpbuf *buf) | |
72865317 | 975 | { |
856081f6 BP |
976 | struct dp_netdev_queue *q = find_nonempty_queue(dpif); |
977 | if (q) { | |
d88b629b BP |
978 | struct dp_netdev_upcall *u = &q->upcalls[q->tail++ & QUEUE_MASK]; |
979 | ||
980 | *upcall = u->upcall; | |
981 | upcall->packet = buf; | |
b3907fbc | 982 | |
90a7c55e | 983 | ofpbuf_uninit(buf); |
d88b629b | 984 | *buf = u->buf; |
90a7c55e | 985 | |
72865317 BP |
986 | return 0; |
987 | } else { | |
988 | return EAGAIN; | |
989 | } | |
990 | } | |
991 | ||
992 | static void | |
993 | dpif_netdev_recv_wait(struct dpif *dpif) | |
994 | { | |
856081f6 | 995 | if (find_nonempty_queue(dpif)) { |
72865317 BP |
996 | poll_immediate_wake(); |
997 | } else { | |
998 | /* No messages ready to be received, and dp_wait() will ensure that we | |
999 | * wake up to queue new messages, so there is nothing to do. */ | |
1000 | } | |
1001 | } | |
1ba530f4 BP |
1002 | |
1003 | static void | |
1004 | dpif_netdev_recv_purge(struct dpif *dpif) | |
1005 | { | |
1006 | struct dpif_netdev *dpif_netdev = dpif_netdev_cast(dpif); | |
1007 | dp_netdev_purge_queues(dpif_netdev->dp); | |
1008 | } | |
72865317 BP |
1009 | \f |
1010 | static void | |
c1fe014d | 1011 | dp_netdev_flow_used(struct dp_netdev_flow *flow, const struct ofpbuf *packet) |
72865317 | 1012 | { |
c97fb132 | 1013 | flow->used = time_msec(); |
72865317 BP |
1014 | flow->packet_count++; |
1015 | flow->byte_count += packet->size; | |
c1fe014d | 1016 | flow->tcp_flags |= packet_get_tcp_flags(packet, &flow->key); |
72865317 BP |
1017 | } |
1018 | ||
1019 | static void | |
1020 | dp_netdev_port_input(struct dp_netdev *dp, struct dp_netdev_port *port, | |
1021 | struct ofpbuf *packet) | |
1022 | { | |
1023 | struct dp_netdev_flow *flow; | |
14608a15 | 1024 | struct flow key; |
72865317 | 1025 | |
1805876e BP |
1026 | if (packet->size < ETH_HEADER_LEN) { |
1027 | return; | |
1028 | } | |
72e8bf28 | 1029 | flow_extract(packet, 0, 0, NULL, port->port_no, &key); |
72865317 BP |
1030 | flow = dp_netdev_lookup_flow(dp, &key); |
1031 | if (flow) { | |
c1fe014d | 1032 | dp_netdev_flow_used(flow, packet); |
72865317 | 1033 | dp_netdev_execute_actions(dp, packet, &key, |
cdee00fd | 1034 | flow->actions, flow->actions_len); |
72865317 BP |
1035 | dp->n_hit++; |
1036 | } else { | |
1037 | dp->n_missed++; | |
b85d8d61 | 1038 | dp_netdev_output_userspace(dp, packet, DPIF_UC_MISS, &key, 0); |
72865317 BP |
1039 | } |
1040 | } | |
1041 | ||
1042 | static void | |
640e1b20 | 1043 | dpif_netdev_run(struct dpif *dpif) |
72865317 | 1044 | { |
640e1b20 BP |
1045 | struct dp_netdev *dp = get_dp_netdev(dpif); |
1046 | struct dp_netdev_port *port; | |
72865317 | 1047 | struct ofpbuf packet; |
72865317 | 1048 | |
ecf9ebff | 1049 | ofpbuf_init(&packet, DP_NETDEV_HEADROOM + VLAN_ETH_HEADER_LEN + max_mtu); |
72865317 | 1050 | |
640e1b20 BP |
1051 | LIST_FOR_EACH (port, node, &dp->port_list) { |
1052 | int error; | |
1053 | ||
1054 | /* Reset packet contents. */ | |
1055 | ofpbuf_clear(&packet); | |
1056 | ofpbuf_reserve(&packet, DP_NETDEV_HEADROOM); | |
1057 | ||
1058 | error = netdev_recv(port->netdev, &packet); | |
1059 | if (!error) { | |
1060 | dp_netdev_port_input(dp, port, &packet); | |
1061 | } else if (error != EAGAIN && error != EOPNOTSUPP) { | |
1062 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
1063 | VLOG_ERR_RL(&rl, "error receiving data from %s: %s", | |
1064 | netdev_get_name(port->netdev), strerror(error)); | |
72865317 BP |
1065 | } |
1066 | } | |
1067 | ofpbuf_uninit(&packet); | |
1068 | } | |
1069 | ||
1070 | static void | |
640e1b20 | 1071 | dpif_netdev_wait(struct dpif *dpif) |
72865317 | 1072 | { |
640e1b20 BP |
1073 | struct dp_netdev *dp = get_dp_netdev(dpif); |
1074 | struct dp_netdev_port *port; | |
462278db | 1075 | |
640e1b20 BP |
1076 | LIST_FOR_EACH (port, node, &dp->port_list) { |
1077 | netdev_recv_wait(port->netdev); | |
72865317 BP |
1078 | } |
1079 | } | |
1080 | ||
72865317 | 1081 | static void |
4edb9ae9 | 1082 | dp_netdev_set_dl(struct ofpbuf *packet, const struct ovs_key_ethernet *eth_key) |
72865317 BP |
1083 | { |
1084 | struct eth_header *eh = packet->l2; | |
4edb9ae9 PS |
1085 | |
1086 | memcpy(eh->eth_src, eth_key->eth_src, sizeof eh->eth_src); | |
1087 | memcpy(eh->eth_dst, eth_key->eth_dst, sizeof eh->eth_dst); | |
72865317 BP |
1088 | } |
1089 | ||
72865317 BP |
1090 | static void |
1091 | dp_netdev_output_port(struct dp_netdev *dp, struct ofpbuf *packet, | |
9b56fe13 | 1092 | uint32_t out_port) |
72865317 | 1093 | { |
2105ccc8 | 1094 | struct dp_netdev_port *p = dp->ports[out_port]; |
72865317 BP |
1095 | if (p) { |
1096 | netdev_send(p->netdev, packet); | |
1097 | } | |
1098 | } | |
1099 | ||
72865317 | 1100 | static int |
b85d8d61 | 1101 | dp_netdev_output_userspace(struct dp_netdev *dp, const struct ofpbuf *packet, |
856081f6 | 1102 | int queue_no, const struct flow *flow, uint64_t arg) |
72865317 | 1103 | { |
856081f6 | 1104 | struct dp_netdev_queue *q = &dp->queues[queue_no]; |
d88b629b | 1105 | struct dp_netdev_upcall *u; |
856081f6 BP |
1106 | struct dpif_upcall *upcall; |
1107 | struct ofpbuf *buf; | |
1108 | size_t key_len; | |
72865317 | 1109 | |
856081f6 | 1110 | if (q->head - q->tail >= MAX_QUEUE_LEN) { |
72865317 BP |
1111 | dp->n_lost++; |
1112 | return ENOBUFS; | |
1113 | } | |
1114 | ||
d88b629b BP |
1115 | u = &q->upcalls[q->head++ & QUEUE_MASK]; |
1116 | ||
1117 | buf = &u->buf; | |
1118 | ofpbuf_init(buf, ODPUTIL_FLOW_KEY_BYTES + 2 + packet->size); | |
ddbfda84 | 1119 | odp_flow_key_from_flow(buf, flow, flow->in_port); |
856081f6 BP |
1120 | key_len = buf->size; |
1121 | ofpbuf_pull(buf, key_len); | |
1122 | ofpbuf_reserve(buf, 2); | |
1123 | ofpbuf_put(buf, packet->data, packet->size); | |
1124 | ||
d88b629b | 1125 | upcall = &u->upcall; |
856081f6 BP |
1126 | upcall->type = queue_no; |
1127 | upcall->packet = buf; | |
1128 | upcall->key = buf->base; | |
1129 | upcall->key_len = key_len; | |
1130 | upcall->userdata = arg; | |
1131 | ||
72865317 BP |
1132 | return 0; |
1133 | } | |
1134 | ||
26c6b6cd BP |
1135 | static void |
1136 | dp_netdev_sample(struct dp_netdev *dp, | |
1137 | struct ofpbuf *packet, struct flow *key, | |
1138 | const struct nlattr *action) | |
1139 | { | |
1140 | const struct nlattr *subactions = NULL; | |
1141 | const struct nlattr *a; | |
1142 | size_t left; | |
1143 | ||
1144 | NL_NESTED_FOR_EACH_UNSAFE (a, left, action) { | |
1145 | int type = nl_attr_type(a); | |
1146 | ||
1147 | switch ((enum ovs_sample_attr) type) { | |
1148 | case OVS_SAMPLE_ATTR_PROBABILITY: | |
1149 | if (random_uint32() >= nl_attr_get_u32(a)) { | |
1150 | return; | |
1151 | } | |
1152 | break; | |
1153 | ||
1154 | case OVS_SAMPLE_ATTR_ACTIONS: | |
1155 | subactions = a; | |
1156 | break; | |
1157 | ||
1158 | case OVS_SAMPLE_ATTR_UNSPEC: | |
1159 | case __OVS_SAMPLE_ATTR_MAX: | |
1160 | default: | |
1161 | NOT_REACHED(); | |
1162 | } | |
1163 | } | |
1164 | ||
1165 | dp_netdev_execute_actions(dp, packet, key, nl_attr_get(subactions), | |
1166 | nl_attr_get_size(subactions)); | |
1167 | } | |
1168 | ||
98403001 BP |
1169 | static void |
1170 | dp_netdev_action_userspace(struct dp_netdev *dp, | |
1171 | struct ofpbuf *packet, struct flow *key, | |
1172 | const struct nlattr *a) | |
1173 | { | |
1174 | const struct nlattr *userdata_attr; | |
1175 | uint64_t userdata; | |
1176 | ||
1177 | userdata_attr = nl_attr_find_nested(a, OVS_USERSPACE_ATTR_USERDATA); | |
1178 | userdata = userdata_attr ? nl_attr_get_u64(userdata_attr) : 0; | |
1179 | dp_netdev_output_userspace(dp, packet, DPIF_UC_ACTION, key, userdata); | |
1180 | } | |
1181 | ||
4edb9ae9 PS |
1182 | static void |
1183 | execute_set_action(struct ofpbuf *packet, const struct nlattr *a) | |
1184 | { | |
1185 | enum ovs_key_attr type = nl_attr_type(a); | |
c97664b3 | 1186 | const struct ovs_key_ipv4 *ipv4_key; |
bc7a5acd | 1187 | const struct ovs_key_ipv6 *ipv6_key; |
c97664b3 EJ |
1188 | const struct ovs_key_tcp *tcp_key; |
1189 | const struct ovs_key_udp *udp_key; | |
1190 | ||
4edb9ae9 PS |
1191 | switch (type) { |
1192 | case OVS_KEY_ATTR_TUN_ID: | |
abff858b | 1193 | case OVS_KEY_ATTR_PRIORITY: |
72e8bf28 | 1194 | case OVS_KEY_ATTR_SKB_MARK: |
356af50b | 1195 | case OVS_KEY_ATTR_IPV4_TUNNEL: |
abff858b | 1196 | /* not implemented */ |
4edb9ae9 PS |
1197 | break; |
1198 | ||
1199 | case OVS_KEY_ATTR_ETHERNET: | |
1200 | dp_netdev_set_dl(packet, | |
1201 | nl_attr_get_unspec(a, sizeof(struct ovs_key_ethernet))); | |
1202 | break; | |
1203 | ||
1204 | case OVS_KEY_ATTR_IPV4: | |
c97664b3 EJ |
1205 | ipv4_key = nl_attr_get_unspec(a, sizeof(struct ovs_key_ipv4)); |
1206 | packet_set_ipv4(packet, ipv4_key->ipv4_src, ipv4_key->ipv4_dst, | |
1207 | ipv4_key->ipv4_tos, ipv4_key->ipv4_ttl); | |
4edb9ae9 PS |
1208 | break; |
1209 | ||
bc7a5acd AA |
1210 | case OVS_KEY_ATTR_IPV6: |
1211 | ipv6_key = nl_attr_get_unspec(a, sizeof(struct ovs_key_ipv6)); | |
1212 | packet_set_ipv6(packet, ipv6_key->ipv6_proto, ipv6_key->ipv6_src, | |
1213 | ipv6_key->ipv6_dst, ipv6_key->ipv6_tclass, | |
1214 | ipv6_key->ipv6_label, ipv6_key->ipv6_hlimit); | |
1215 | break; | |
1216 | ||
4edb9ae9 | 1217 | case OVS_KEY_ATTR_TCP: |
c97664b3 EJ |
1218 | tcp_key = nl_attr_get_unspec(a, sizeof(struct ovs_key_tcp)); |
1219 | packet_set_tcp_port(packet, tcp_key->tcp_src, tcp_key->tcp_dst); | |
4edb9ae9 PS |
1220 | break; |
1221 | ||
1222 | case OVS_KEY_ATTR_UDP: | |
c97664b3 EJ |
1223 | udp_key = nl_attr_get_unspec(a, sizeof(struct ovs_key_udp)); |
1224 | packet_set_udp_port(packet, udp_key->udp_src, udp_key->udp_dst); | |
4edb9ae9 PS |
1225 | break; |
1226 | ||
1227 | case OVS_KEY_ATTR_UNSPEC: | |
fea393b1 | 1228 | case OVS_KEY_ATTR_ENCAP: |
4edb9ae9 | 1229 | case OVS_KEY_ATTR_ETHERTYPE: |
4edb9ae9 | 1230 | case OVS_KEY_ATTR_IN_PORT: |
fea393b1 | 1231 | case OVS_KEY_ATTR_VLAN: |
4edb9ae9 PS |
1232 | case OVS_KEY_ATTR_ICMP: |
1233 | case OVS_KEY_ATTR_ICMPV6: | |
1234 | case OVS_KEY_ATTR_ARP: | |
1235 | case OVS_KEY_ATTR_ND: | |
1236 | case __OVS_KEY_ATTR_MAX: | |
1237 | default: | |
1238 | NOT_REACHED(); | |
1239 | } | |
1240 | } | |
1241 | ||
1242 | static void | |
72865317 | 1243 | dp_netdev_execute_actions(struct dp_netdev *dp, |
14608a15 | 1244 | struct ofpbuf *packet, struct flow *key, |
cdee00fd | 1245 | const struct nlattr *actions, |
cf22f8cb | 1246 | size_t actions_len) |
72865317 | 1247 | { |
cdee00fd BP |
1248 | const struct nlattr *a; |
1249 | unsigned int left; | |
72865317 | 1250 | |
cdee00fd | 1251 | NL_ATTR_FOR_EACH_UNSAFE (a, left, actions, actions_len) { |
fea393b1 | 1252 | const struct ovs_action_push_vlan *vlan; |
26c6b6cd BP |
1253 | int type = nl_attr_type(a); |
1254 | ||
09ded0ad | 1255 | switch ((enum ovs_action_attr) type) { |
df2c07f4 | 1256 | case OVS_ACTION_ATTR_OUTPUT: |
cdee00fd | 1257 | dp_netdev_output_port(dp, packet, nl_attr_get_u32(a)); |
2105ccc8 | 1258 | break; |
72865317 | 1259 | |
df2c07f4 | 1260 | case OVS_ACTION_ATTR_USERSPACE: |
98403001 | 1261 | dp_netdev_action_userspace(dp, packet, key, a); |
2105ccc8 | 1262 | break; |
72865317 | 1263 | |
fea393b1 BP |
1264 | case OVS_ACTION_ATTR_PUSH_VLAN: |
1265 | vlan = nl_attr_get(a); | |
2f4ca41b | 1266 | eth_push_vlan(packet, vlan->vlan_tci); |
72865317 BP |
1267 | break; |
1268 | ||
fea393b1 | 1269 | case OVS_ACTION_ATTR_POP_VLAN: |
f4ebc25e | 1270 | eth_pop_vlan(packet); |
2105ccc8 | 1271 | break; |
72865317 | 1272 | |
4edb9ae9 PS |
1273 | case OVS_ACTION_ATTR_SET: |
1274 | execute_set_action(packet, nl_attr_get(a)); | |
2105ccc8 | 1275 | break; |
26c6b6cd BP |
1276 | |
1277 | case OVS_ACTION_ATTR_SAMPLE: | |
1278 | dp_netdev_sample(dp, packet, key, a); | |
1279 | break; | |
1280 | ||
26c6b6cd BP |
1281 | case OVS_ACTION_ATTR_UNSPEC: |
1282 | case __OVS_ACTION_ATTR_MAX: | |
1283 | NOT_REACHED(); | |
2105ccc8 BP |
1284 | } |
1285 | } | |
72865317 BP |
1286 | } |
1287 | ||
1288 | const struct dpif_class dpif_netdev_class = { | |
72865317 | 1289 | "netdev", |
2197d7ab | 1290 | dpif_netdev_enumerate, |
0aeaabc8 | 1291 | dpif_netdev_port_open_type, |
72865317 BP |
1292 | dpif_netdev_open, |
1293 | dpif_netdev_close, | |
7dab847a | 1294 | dpif_netdev_destroy, |
640e1b20 BP |
1295 | dpif_netdev_run, |
1296 | dpif_netdev_wait, | |
72865317 | 1297 | dpif_netdev_get_stats, |
72865317 BP |
1298 | dpif_netdev_port_add, |
1299 | dpif_netdev_port_del, | |
1300 | dpif_netdev_port_query_by_number, | |
1301 | dpif_netdev_port_query_by_name, | |
996c1b3d | 1302 | dpif_netdev_get_max_ports, |
98403001 | 1303 | NULL, /* port_get_pid */ |
b0ec0f27 BP |
1304 | dpif_netdev_port_dump_start, |
1305 | dpif_netdev_port_dump_next, | |
1306 | dpif_netdev_port_dump_done, | |
72865317 BP |
1307 | dpif_netdev_port_poll, |
1308 | dpif_netdev_port_poll_wait, | |
72865317 BP |
1309 | dpif_netdev_flow_get, |
1310 | dpif_netdev_flow_put, | |
1311 | dpif_netdev_flow_del, | |
1312 | dpif_netdev_flow_flush, | |
704a1e09 BP |
1313 | dpif_netdev_flow_dump_start, |
1314 | dpif_netdev_flow_dump_next, | |
1315 | dpif_netdev_flow_dump_done, | |
72865317 | 1316 | dpif_netdev_execute, |
6bc60024 | 1317 | NULL, /* operate */ |
a12b3ead | 1318 | dpif_netdev_recv_set, |
5bf93d67 | 1319 | dpif_netdev_queue_to_priority, |
72865317 BP |
1320 | dpif_netdev_recv, |
1321 | dpif_netdev_recv_wait, | |
1ba530f4 | 1322 | dpif_netdev_recv_purge, |
72865317 | 1323 | }; |
614c4892 | 1324 | |
0cbfe35d BP |
1325 | static void |
1326 | dpif_dummy_register__(const char *type) | |
1327 | { | |
1328 | struct dpif_class *class; | |
1329 | ||
1330 | class = xmalloc(sizeof *class); | |
1331 | *class = dpif_netdev_class; | |
1332 | class->type = xstrdup(type); | |
1333 | dp_register_provider(class); | |
1334 | } | |
1335 | ||
614c4892 | 1336 | void |
0cbfe35d | 1337 | dpif_dummy_register(bool override) |
614c4892 | 1338 | { |
0cbfe35d BP |
1339 | if (override) { |
1340 | struct sset types; | |
1341 | const char *type; | |
1342 | ||
1343 | sset_init(&types); | |
1344 | dp_enumerate_types(&types); | |
1345 | SSET_FOR_EACH (type, &types) { | |
1346 | if (!dp_unregister_provider(type)) { | |
1347 | dpif_dummy_register__(type); | |
1348 | } | |
1349 | } | |
1350 | sset_destroy(&types); | |
614c4892 | 1351 | } |
0cbfe35d BP |
1352 | |
1353 | dpif_dummy_register__("dummy"); | |
614c4892 | 1354 | } |