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72865317 | 1 | /* |
de281153 | 2 | * Copyright (c) 2009, 2010, 2011, 2012, 2013 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" | |
de281153 | 43 | #include "netdev-vport.h" |
cdee00fd | 44 | #include "netlink.h" |
f094af7b | 45 | #include "odp-execute.h" |
72865317 BP |
46 | #include "odp-util.h" |
47 | #include "ofp-print.h" | |
48 | #include "ofpbuf.h" | |
49 | #include "packets.h" | |
50 | #include "poll-loop.h" | |
26c6b6cd | 51 | #include "random.h" |
d33ed218 | 52 | #include "seq.h" |
462278db | 53 | #include "shash.h" |
0cbfe35d | 54 | #include "sset.h" |
72865317 | 55 | #include "timeval.h" |
74cc3969 | 56 | #include "unixctl.h" |
72865317 | 57 | #include "util.h" |
72865317 | 58 | #include "vlog.h" |
5136ce49 | 59 | |
d98e6007 | 60 | VLOG_DEFINE_THIS_MODULE(dpif_netdev); |
72865317 BP |
61 | |
62 | /* Configuration parameters. */ | |
72865317 BP |
63 | enum { MAX_PORTS = 256 }; /* Maximum number of ports. */ |
64 | enum { MAX_FLOWS = 65536 }; /* Maximum number of flows in flow table. */ | |
65 | ||
66 | /* Enough headroom to add a vlan tag, plus an extra 2 bytes to allow IP | |
67 | * headers to be aligned on a 4-byte boundary. */ | |
68 | enum { DP_NETDEV_HEADROOM = 2 + VLAN_HEADER_LEN }; | |
69 | ||
856081f6 BP |
70 | /* Queues. */ |
71 | enum { N_QUEUES = 2 }; /* Number of queues for dpif_recv(). */ | |
72 | enum { MAX_QUEUE_LEN = 128 }; /* Maximum number of packets per queue. */ | |
73 | enum { QUEUE_MASK = MAX_QUEUE_LEN - 1 }; | |
74 | BUILD_ASSERT_DECL(IS_POW2(MAX_QUEUE_LEN)); | |
75 | ||
d88b629b BP |
76 | struct dp_netdev_upcall { |
77 | struct dpif_upcall upcall; /* Queued upcall information. */ | |
78 | struct ofpbuf buf; /* ofpbuf instance for upcall.packet. */ | |
79 | }; | |
80 | ||
856081f6 | 81 | struct dp_netdev_queue { |
d88b629b | 82 | struct dp_netdev_upcall upcalls[MAX_QUEUE_LEN]; |
856081f6 BP |
83 | unsigned int head, tail; |
84 | }; | |
85 | ||
72865317 BP |
86 | /* Datapath based on the network device interface from netdev.h. */ |
87 | struct dp_netdev { | |
614c4892 | 88 | const struct dpif_class *class; |
462278db | 89 | char *name; |
72865317 | 90 | int open_cnt; |
7dab847a | 91 | bool destroyed; |
3b0aab93 | 92 | int max_mtu; /* Maximum MTU of any port added so far. */ |
72865317 | 93 | |
856081f6 | 94 | struct dp_netdev_queue queues[N_QUEUES]; |
72865317 | 95 | struct hmap flow_table; /* Flow table. */ |
d33ed218 | 96 | struct seq *queue_seq; /* Incremented whenever a packet is queued. */ |
72865317 BP |
97 | |
98 | /* Statistics. */ | |
72865317 BP |
99 | long long int n_hit; /* Number of flow table matches. */ |
100 | long long int n_missed; /* Number of flow table misses. */ | |
101 | long long int n_lost; /* Number of misses not passed to client. */ | |
102 | ||
103 | /* Ports. */ | |
72865317 BP |
104 | struct dp_netdev_port *ports[MAX_PORTS]; |
105 | struct list port_list; | |
d33ed218 | 106 | struct seq *port_seq; /* Incremented whenever a port changes. */ |
72865317 BP |
107 | }; |
108 | ||
109 | /* A port in a netdev-based datapath. */ | |
110 | struct dp_netdev_port { | |
4e022ec0 | 111 | odp_port_t port_no; /* Index into dp_netdev's 'ports'. */ |
72865317 BP |
112 | struct list node; /* Element in dp_netdev's 'port_list'. */ |
113 | struct netdev *netdev; | |
4b609110 | 114 | struct netdev_saved_flags *sf; |
796223f5 | 115 | struct netdev_rx *rx; |
0cbfe35d | 116 | char *type; /* Port type as requested by user. */ |
72865317 BP |
117 | }; |
118 | ||
119 | /* A flow in dp_netdev's 'flow_table'. */ | |
120 | struct dp_netdev_flow { | |
121 | struct hmap_node node; /* Element in dp_netdev's 'flow_table'. */ | |
14608a15 | 122 | struct flow key; |
72865317 BP |
123 | |
124 | /* Statistics. */ | |
c97fb132 | 125 | long long int used; /* Last used time, in monotonic msecs. */ |
2105ccc8 BP |
126 | long long int packet_count; /* Number of packets matched. */ |
127 | long long int byte_count; /* Number of bytes matched. */ | |
7c808e39 | 128 | uint8_t tcp_flags; /* Bitwise-OR of seen tcp_flags values. */ |
72865317 BP |
129 | |
130 | /* Actions. */ | |
cdee00fd | 131 | struct nlattr *actions; |
cf22f8cb | 132 | size_t actions_len; |
72865317 BP |
133 | }; |
134 | ||
135 | /* Interface to netdev-based datapath. */ | |
136 | struct dpif_netdev { | |
137 | struct dpif dpif; | |
138 | struct dp_netdev *dp; | |
d33ed218 | 139 | uint64_t last_port_seq; |
72865317 BP |
140 | }; |
141 | ||
142 | /* All netdev-based datapaths. */ | |
462278db | 143 | static struct shash dp_netdevs = SHASH_INITIALIZER(&dp_netdevs); |
72865317 | 144 | |
5279f8fd | 145 | /* Global lock for all data. */ |
97be1538 | 146 | static struct ovs_mutex dp_netdev_mutex = OVS_MUTEX_INITIALIZER; |
5279f8fd | 147 | |
4e022ec0 | 148 | static int get_port_by_number(struct dp_netdev *, odp_port_t port_no, |
72865317 BP |
149 | struct dp_netdev_port **portp); |
150 | static int get_port_by_name(struct dp_netdev *, const char *devname, | |
151 | struct dp_netdev_port **portp); | |
152 | static void dp_netdev_free(struct dp_netdev *); | |
153 | static void dp_netdev_flow_flush(struct dp_netdev *); | |
c3827f61 | 154 | static int do_add_port(struct dp_netdev *, const char *devname, |
4e022ec0 AW |
155 | const char *type, odp_port_t port_no); |
156 | static int do_del_port(struct dp_netdev *, odp_port_t port_no); | |
614c4892 BP |
157 | static int dpif_netdev_open(const struct dpif_class *, const char *name, |
158 | bool create, struct dpif **); | |
b85d8d61 | 159 | static int dp_netdev_output_userspace(struct dp_netdev *, const struct ofpbuf *, |
856081f6 | 160 | int queue_no, const struct flow *, |
e995e3df | 161 | const struct nlattr *userdata); |
4edb9ae9 PS |
162 | static void dp_netdev_execute_actions(struct dp_netdev *, |
163 | struct ofpbuf *, struct flow *, | |
164 | const struct nlattr *actions, | |
165 | size_t actions_len); | |
6c13071b SH |
166 | static void dp_netdev_port_input(struct dp_netdev *dp, |
167 | struct dp_netdev_port *port, | |
168 | struct ofpbuf *packet, uint32_t skb_priority, | |
1362e248 | 169 | uint32_t pkt_mark, const struct flow_tnl *tnl); |
72865317 BP |
170 | |
171 | static struct dpif_netdev * | |
172 | dpif_netdev_cast(const struct dpif *dpif) | |
173 | { | |
cb22974d | 174 | ovs_assert(dpif->dpif_class->open == dpif_netdev_open); |
72865317 BP |
175 | return CONTAINER_OF(dpif, struct dpif_netdev, dpif); |
176 | } | |
177 | ||
178 | static struct dp_netdev * | |
179 | get_dp_netdev(const struct dpif *dpif) | |
180 | { | |
181 | return dpif_netdev_cast(dpif)->dp; | |
182 | } | |
183 | ||
2197d7ab GL |
184 | static int |
185 | dpif_netdev_enumerate(struct sset *all_dps) | |
186 | { | |
187 | struct shash_node *node; | |
188 | ||
97be1538 | 189 | ovs_mutex_lock(&dp_netdev_mutex); |
2197d7ab GL |
190 | SHASH_FOR_EACH(node, &dp_netdevs) { |
191 | sset_add(all_dps, node->name); | |
192 | } | |
97be1538 | 193 | ovs_mutex_unlock(&dp_netdev_mutex); |
5279f8fd | 194 | |
2197d7ab GL |
195 | return 0; |
196 | } | |
197 | ||
add90f6f EJ |
198 | static bool |
199 | dpif_netdev_class_is_dummy(const struct dpif_class *class) | |
200 | { | |
201 | return class != &dpif_netdev_class; | |
202 | } | |
203 | ||
0aeaabc8 JP |
204 | static const char * |
205 | dpif_netdev_port_open_type(const struct dpif_class *class, const char *type) | |
206 | { | |
207 | return strcmp(type, "internal") ? type | |
add90f6f | 208 | : dpif_netdev_class_is_dummy(class) ? "dummy" |
0aeaabc8 JP |
209 | : "tap"; |
210 | } | |
211 | ||
72865317 BP |
212 | static struct dpif * |
213 | create_dpif_netdev(struct dp_netdev *dp) | |
214 | { | |
462278db | 215 | uint16_t netflow_id = hash_string(dp->name, 0); |
72865317 | 216 | struct dpif_netdev *dpif; |
72865317 BP |
217 | |
218 | dp->open_cnt++; | |
219 | ||
72865317 | 220 | dpif = xmalloc(sizeof *dpif); |
614c4892 | 221 | dpif_init(&dpif->dpif, dp->class, dp->name, netflow_id >> 8, netflow_id); |
72865317 | 222 | dpif->dp = dp; |
d33ed218 | 223 | dpif->last_port_seq = seq_read(dp->port_seq); |
72865317 BP |
224 | |
225 | return &dpif->dpif; | |
226 | } | |
227 | ||
4e022ec0 AW |
228 | /* Choose an unused, non-zero port number and return it on success. |
229 | * Return ODPP_NONE on failure. */ | |
230 | static odp_port_t | |
e44768b7 JP |
231 | choose_port(struct dp_netdev *dp, const char *name) |
232 | { | |
4e022ec0 | 233 | uint32_t port_no; |
e44768b7 JP |
234 | |
235 | if (dp->class != &dpif_netdev_class) { | |
236 | const char *p; | |
237 | int start_no = 0; | |
238 | ||
239 | /* If the port name begins with "br", start the number search at | |
240 | * 100 to make writing tests easier. */ | |
241 | if (!strncmp(name, "br", 2)) { | |
242 | start_no = 100; | |
243 | } | |
244 | ||
245 | /* If the port name contains a number, try to assign that port number. | |
246 | * This can make writing unit tests easier because port numbers are | |
247 | * predictable. */ | |
248 | for (p = name; *p != '\0'; p++) { | |
249 | if (isdigit((unsigned char) *p)) { | |
250 | port_no = start_no + strtol(p, NULL, 10); | |
251 | if (port_no > 0 && port_no < MAX_PORTS | |
252 | && !dp->ports[port_no]) { | |
4e022ec0 | 253 | return u32_to_odp(port_no); |
e44768b7 JP |
254 | } |
255 | break; | |
256 | } | |
257 | } | |
258 | } | |
259 | ||
260 | for (port_no = 1; port_no < MAX_PORTS; port_no++) { | |
261 | if (!dp->ports[port_no]) { | |
4e022ec0 | 262 | return u32_to_odp(port_no); |
e44768b7 JP |
263 | } |
264 | } | |
265 | ||
4e022ec0 | 266 | return ODPP_NONE; |
e44768b7 JP |
267 | } |
268 | ||
72865317 | 269 | static int |
614c4892 BP |
270 | create_dp_netdev(const char *name, const struct dpif_class *class, |
271 | struct dp_netdev **dpp) | |
72865317 BP |
272 | { |
273 | struct dp_netdev *dp; | |
274 | int error; | |
275 | int i; | |
276 | ||
462278db | 277 | dp = xzalloc(sizeof *dp); |
614c4892 | 278 | dp->class = class; |
462278db | 279 | dp->name = xstrdup(name); |
72865317 | 280 | dp->open_cnt = 0; |
3b0aab93 | 281 | dp->max_mtu = ETH_PAYLOAD_MAX; |
72865317 | 282 | for (i = 0; i < N_QUEUES; i++) { |
856081f6 | 283 | dp->queues[i].head = dp->queues[i].tail = 0; |
72865317 | 284 | } |
d33ed218 | 285 | dp->queue_seq = seq_create(); |
72865317 | 286 | hmap_init(&dp->flow_table); |
72865317 | 287 | list_init(&dp->port_list); |
d33ed218 | 288 | dp->port_seq = seq_create(); |
e44768b7 | 289 | |
4e022ec0 | 290 | error = do_add_port(dp, name, "internal", ODPP_LOCAL); |
72865317 BP |
291 | if (error) { |
292 | dp_netdev_free(dp); | |
462278db | 293 | return error; |
72865317 BP |
294 | } |
295 | ||
462278db BP |
296 | shash_add(&dp_netdevs, name, dp); |
297 | ||
298 | *dpp = dp; | |
72865317 BP |
299 | return 0; |
300 | } | |
301 | ||
302 | static int | |
614c4892 | 303 | dpif_netdev_open(const struct dpif_class *class, const char *name, |
4a387741 | 304 | bool create, struct dpif **dpifp) |
72865317 | 305 | { |
462278db | 306 | struct dp_netdev *dp; |
5279f8fd | 307 | int error; |
462278db | 308 | |
97be1538 | 309 | ovs_mutex_lock(&dp_netdev_mutex); |
462278db BP |
310 | dp = shash_find_data(&dp_netdevs, name); |
311 | if (!dp) { | |
5279f8fd | 312 | error = create ? create_dp_netdev(name, class, &dp) : ENODEV; |
72865317 | 313 | } else { |
5279f8fd BP |
314 | error = (dp->class != class ? EINVAL |
315 | : create ? EEXIST | |
316 | : 0); | |
317 | } | |
318 | if (!error) { | |
319 | *dpifp = create_dpif_netdev(dp); | |
72865317 | 320 | } |
97be1538 | 321 | ovs_mutex_unlock(&dp_netdev_mutex); |
462278db | 322 | |
5279f8fd | 323 | return error; |
72865317 BP |
324 | } |
325 | ||
326 | static void | |
1ba530f4 | 327 | dp_netdev_purge_queues(struct dp_netdev *dp) |
72865317 BP |
328 | { |
329 | int i; | |
330 | ||
72865317 | 331 | for (i = 0; i < N_QUEUES; i++) { |
856081f6 | 332 | struct dp_netdev_queue *q = &dp->queues[i]; |
856081f6 | 333 | |
1ba530f4 | 334 | while (q->tail != q->head) { |
d88b629b BP |
335 | struct dp_netdev_upcall *u = &q->upcalls[q->tail++ & QUEUE_MASK]; |
336 | ofpbuf_uninit(&u->buf); | |
856081f6 | 337 | } |
72865317 | 338 | } |
1ba530f4 BP |
339 | } |
340 | ||
341 | static void | |
342 | dp_netdev_free(struct dp_netdev *dp) | |
343 | { | |
4ad28026 BP |
344 | struct dp_netdev_port *port, *next; |
345 | ||
1ba530f4 | 346 | dp_netdev_flow_flush(dp); |
4ad28026 | 347 | LIST_FOR_EACH_SAFE (port, next, node, &dp->port_list) { |
1ba530f4 BP |
348 | do_del_port(dp, port->port_no); |
349 | } | |
350 | dp_netdev_purge_queues(dp); | |
d33ed218 | 351 | seq_destroy(dp->queue_seq); |
72865317 | 352 | hmap_destroy(&dp->flow_table); |
d33ed218 | 353 | seq_destroy(dp->port_seq); |
462278db | 354 | free(dp->name); |
72865317 BP |
355 | free(dp); |
356 | } | |
357 | ||
358 | static void | |
359 | dpif_netdev_close(struct dpif *dpif) | |
360 | { | |
361 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
5279f8fd | 362 | |
97be1538 | 363 | ovs_mutex_lock(&dp_netdev_mutex); |
5279f8fd | 364 | |
cb22974d | 365 | ovs_assert(dp->open_cnt > 0); |
7dab847a | 366 | if (--dp->open_cnt == 0 && dp->destroyed) { |
462278db | 367 | shash_find_and_delete(&dp_netdevs, dp->name); |
72865317 BP |
368 | dp_netdev_free(dp); |
369 | } | |
370 | free(dpif); | |
5279f8fd | 371 | |
97be1538 | 372 | ovs_mutex_unlock(&dp_netdev_mutex); |
72865317 BP |
373 | } |
374 | ||
375 | static int | |
7dab847a | 376 | dpif_netdev_destroy(struct dpif *dpif) |
72865317 BP |
377 | { |
378 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
5279f8fd | 379 | |
97be1538 | 380 | ovs_mutex_lock(&dp_netdev_mutex); |
7dab847a | 381 | dp->destroyed = true; |
97be1538 | 382 | ovs_mutex_unlock(&dp_netdev_mutex); |
5279f8fd | 383 | |
72865317 BP |
384 | return 0; |
385 | } | |
386 | ||
387 | static int | |
a8d9304d | 388 | dpif_netdev_get_stats(const struct dpif *dpif, struct dpif_dp_stats *stats) |
72865317 BP |
389 | { |
390 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
5279f8fd | 391 | |
97be1538 | 392 | ovs_mutex_lock(&dp_netdev_mutex); |
f180c2e2 | 393 | stats->n_flows = hmap_count(&dp->flow_table); |
72865317 BP |
394 | stats->n_hit = dp->n_hit; |
395 | stats->n_missed = dp->n_missed; | |
396 | stats->n_lost = dp->n_lost; | |
97be1538 | 397 | ovs_mutex_unlock(&dp_netdev_mutex); |
5279f8fd | 398 | |
72865317 BP |
399 | return 0; |
400 | } | |
401 | ||
72865317 | 402 | static int |
c3827f61 | 403 | do_add_port(struct dp_netdev *dp, const char *devname, const char *type, |
4e022ec0 | 404 | odp_port_t port_no) |
72865317 | 405 | { |
4b609110 | 406 | struct netdev_saved_flags *sf; |
72865317 BP |
407 | struct dp_netdev_port *port; |
408 | struct netdev *netdev; | |
796223f5 | 409 | struct netdev_rx *rx; |
0cbfe35d | 410 | const char *open_type; |
72865317 BP |
411 | int mtu; |
412 | int error; | |
413 | ||
414 | /* XXX reject devices already in some dp_netdev. */ | |
415 | ||
416 | /* Open and validate network device. */ | |
0aeaabc8 | 417 | open_type = dpif_netdev_port_open_type(dp->class, type); |
0cbfe35d | 418 | error = netdev_open(devname, open_type, &netdev); |
72865317 BP |
419 | if (error) { |
420 | return error; | |
421 | } | |
422 | /* XXX reject loopback devices */ | |
423 | /* XXX reject non-Ethernet devices */ | |
424 | ||
796223f5 | 425 | error = netdev_rx_open(netdev, &rx); |
add90f6f EJ |
426 | if (error |
427 | && !(error == EOPNOTSUPP && dpif_netdev_class_is_dummy(dp->class))) { | |
7b6b0ef4 | 428 | VLOG_ERR("%s: cannot receive packets on this network device (%s)", |
10a89ef0 | 429 | devname, ovs_strerror(errno)); |
7b6b0ef4 BP |
430 | netdev_close(netdev); |
431 | return error; | |
432 | } | |
433 | ||
4b609110 | 434 | error = netdev_turn_flags_on(netdev, NETDEV_PROMISC, &sf); |
72865317 | 435 | if (error) { |
796223f5 | 436 | netdev_rx_close(rx); |
72865317 BP |
437 | netdev_close(netdev); |
438 | return error; | |
439 | } | |
440 | ||
441 | port = xmalloc(sizeof *port); | |
442 | port->port_no = port_no; | |
443 | port->netdev = netdev; | |
4b609110 | 444 | port->sf = sf; |
796223f5 | 445 | port->rx = rx; |
0cbfe35d | 446 | port->type = xstrdup(type); |
72865317 | 447 | |
9b020780 | 448 | error = netdev_get_mtu(netdev, &mtu); |
3b0aab93 BP |
449 | if (!error && mtu > dp->max_mtu) { |
450 | dp->max_mtu = mtu; | |
72865317 BP |
451 | } |
452 | ||
453 | list_push_back(&dp->port_list, &port->node); | |
4e022ec0 | 454 | dp->ports[odp_to_u32(port_no)] = port; |
d33ed218 | 455 | seq_change(dp->port_seq); |
72865317 BP |
456 | |
457 | return 0; | |
458 | } | |
459 | ||
247527db BP |
460 | static int |
461 | dpif_netdev_port_add(struct dpif *dpif, struct netdev *netdev, | |
4e022ec0 | 462 | odp_port_t *port_nop) |
247527db BP |
463 | { |
464 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
3aa30359 BP |
465 | char namebuf[NETDEV_VPORT_NAME_BUFSIZE]; |
466 | const char *dpif_port; | |
4e022ec0 | 467 | odp_port_t port_no; |
5279f8fd | 468 | int error; |
247527db | 469 | |
97be1538 | 470 | ovs_mutex_lock(&dp_netdev_mutex); |
3aa30359 | 471 | dpif_port = netdev_vport_get_dpif_port(netdev, namebuf, sizeof namebuf); |
4e022ec0 AW |
472 | if (*port_nop != ODPP_NONE) { |
473 | uint32_t port_idx = odp_to_u32(*port_nop); | |
474 | if (port_idx >= MAX_PORTS) { | |
5279f8fd | 475 | error = EFBIG; |
4e022ec0 | 476 | } else if (dp->ports[port_idx]) { |
5279f8fd BP |
477 | error = EBUSY; |
478 | } else { | |
479 | error = 0; | |
480 | port_no = *port_nop; | |
232dfa4a | 481 | } |
232dfa4a | 482 | } else { |
3aa30359 | 483 | port_no = choose_port(dp, dpif_port); |
5279f8fd | 484 | error = port_no == ODPP_NONE ? EFBIG : 0; |
232dfa4a | 485 | } |
5279f8fd | 486 | if (!error) { |
247527db | 487 | *port_nop = port_no; |
5279f8fd | 488 | error = do_add_port(dp, dpif_port, netdev_get_type(netdev), port_no); |
247527db | 489 | } |
97be1538 | 490 | ovs_mutex_unlock(&dp_netdev_mutex); |
5279f8fd BP |
491 | |
492 | return error; | |
72865317 BP |
493 | } |
494 | ||
495 | static int | |
4e022ec0 | 496 | dpif_netdev_port_del(struct dpif *dpif, odp_port_t port_no) |
72865317 BP |
497 | { |
498 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
5279f8fd BP |
499 | int error; |
500 | ||
97be1538 | 501 | ovs_mutex_lock(&dp_netdev_mutex); |
5279f8fd | 502 | error = port_no == ODPP_LOCAL ? EINVAL : do_del_port(dp, port_no); |
97be1538 | 503 | ovs_mutex_unlock(&dp_netdev_mutex); |
5279f8fd BP |
504 | |
505 | return error; | |
72865317 BP |
506 | } |
507 | ||
508 | static bool | |
4e022ec0 | 509 | is_valid_port_number(odp_port_t port_no) |
72865317 | 510 | { |
4e022ec0 | 511 | return odp_to_u32(port_no) < MAX_PORTS; |
72865317 BP |
512 | } |
513 | ||
514 | static int | |
515 | get_port_by_number(struct dp_netdev *dp, | |
4e022ec0 | 516 | odp_port_t port_no, struct dp_netdev_port **portp) |
72865317 BP |
517 | { |
518 | if (!is_valid_port_number(port_no)) { | |
519 | *portp = NULL; | |
520 | return EINVAL; | |
521 | } else { | |
4e022ec0 | 522 | *portp = dp->ports[odp_to_u32(port_no)]; |
72865317 BP |
523 | return *portp ? 0 : ENOENT; |
524 | } | |
525 | } | |
526 | ||
527 | static int | |
528 | get_port_by_name(struct dp_netdev *dp, | |
529 | const char *devname, struct dp_netdev_port **portp) | |
530 | { | |
531 | struct dp_netdev_port *port; | |
532 | ||
4e8e4213 | 533 | LIST_FOR_EACH (port, node, &dp->port_list) { |
3efb6063 | 534 | if (!strcmp(netdev_get_name(port->netdev), devname)) { |
72865317 BP |
535 | *portp = port; |
536 | return 0; | |
537 | } | |
538 | } | |
539 | return ENOENT; | |
540 | } | |
541 | ||
542 | static int | |
4e022ec0 | 543 | do_del_port(struct dp_netdev *dp, odp_port_t port_no) |
72865317 BP |
544 | { |
545 | struct dp_netdev_port *port; | |
546 | int error; | |
547 | ||
548 | error = get_port_by_number(dp, port_no, &port); | |
549 | if (error) { | |
550 | return error; | |
551 | } | |
552 | ||
553 | list_remove(&port->node); | |
4e022ec0 | 554 | dp->ports[odp_to_u32(port_no)] = NULL; |
d33ed218 | 555 | seq_change(dp->port_seq); |
72865317 BP |
556 | |
557 | netdev_close(port->netdev); | |
4b609110 | 558 | netdev_restore_flags(port->sf); |
796223f5 | 559 | netdev_rx_close(port->rx); |
0cbfe35d | 560 | free(port->type); |
72865317 BP |
561 | free(port); |
562 | ||
563 | return 0; | |
564 | } | |
565 | ||
566 | static void | |
4c738a8d BP |
567 | answer_port_query(const struct dp_netdev_port *port, |
568 | struct dpif_port *dpif_port) | |
72865317 | 569 | { |
3efb6063 | 570 | dpif_port->name = xstrdup(netdev_get_name(port->netdev)); |
0cbfe35d | 571 | dpif_port->type = xstrdup(port->type); |
4c738a8d | 572 | dpif_port->port_no = port->port_no; |
72865317 BP |
573 | } |
574 | ||
575 | static int | |
4e022ec0 | 576 | dpif_netdev_port_query_by_number(const struct dpif *dpif, odp_port_t port_no, |
4c738a8d | 577 | struct dpif_port *dpif_port) |
72865317 BP |
578 | { |
579 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
580 | struct dp_netdev_port *port; | |
581 | int error; | |
582 | ||
97be1538 | 583 | ovs_mutex_lock(&dp_netdev_mutex); |
72865317 | 584 | error = get_port_by_number(dp, port_no, &port); |
4afba28d | 585 | if (!error && dpif_port) { |
4c738a8d | 586 | answer_port_query(port, dpif_port); |
72865317 | 587 | } |
97be1538 | 588 | ovs_mutex_unlock(&dp_netdev_mutex); |
5279f8fd | 589 | |
72865317 BP |
590 | return error; |
591 | } | |
592 | ||
593 | static int | |
594 | dpif_netdev_port_query_by_name(const struct dpif *dpif, const char *devname, | |
4c738a8d | 595 | struct dpif_port *dpif_port) |
72865317 BP |
596 | { |
597 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
598 | struct dp_netdev_port *port; | |
599 | int error; | |
600 | ||
97be1538 | 601 | ovs_mutex_lock(&dp_netdev_mutex); |
72865317 | 602 | error = get_port_by_name(dp, devname, &port); |
4afba28d | 603 | if (!error && dpif_port) { |
4c738a8d | 604 | answer_port_query(port, dpif_port); |
72865317 | 605 | } |
97be1538 | 606 | ovs_mutex_unlock(&dp_netdev_mutex); |
5279f8fd | 607 | |
72865317 BP |
608 | return error; |
609 | } | |
610 | ||
1dd16b9a | 611 | static uint32_t |
996c1b3d BP |
612 | dpif_netdev_get_max_ports(const struct dpif *dpif OVS_UNUSED) |
613 | { | |
1dd16b9a | 614 | return MAX_PORTS; |
996c1b3d BP |
615 | } |
616 | ||
72865317 BP |
617 | static void |
618 | dp_netdev_free_flow(struct dp_netdev *dp, struct dp_netdev_flow *flow) | |
619 | { | |
620 | hmap_remove(&dp->flow_table, &flow->node); | |
621 | free(flow->actions); | |
622 | free(flow); | |
623 | } | |
624 | ||
625 | static void | |
626 | dp_netdev_flow_flush(struct dp_netdev *dp) | |
627 | { | |
628 | struct dp_netdev_flow *flow, *next; | |
629 | ||
4e8e4213 | 630 | HMAP_FOR_EACH_SAFE (flow, next, node, &dp->flow_table) { |
72865317 BP |
631 | dp_netdev_free_flow(dp, flow); |
632 | } | |
633 | } | |
634 | ||
635 | static int | |
636 | dpif_netdev_flow_flush(struct dpif *dpif) | |
637 | { | |
638 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
5279f8fd | 639 | |
97be1538 | 640 | ovs_mutex_lock(&dp_netdev_mutex); |
72865317 | 641 | dp_netdev_flow_flush(dp); |
97be1538 | 642 | ovs_mutex_unlock(&dp_netdev_mutex); |
5279f8fd | 643 | |
72865317 BP |
644 | return 0; |
645 | } | |
646 | ||
b0ec0f27 | 647 | struct dp_netdev_port_state { |
4e022ec0 | 648 | odp_port_t port_no; |
4c738a8d | 649 | char *name; |
b0ec0f27 BP |
650 | }; |
651 | ||
652 | static int | |
653 | dpif_netdev_port_dump_start(const struct dpif *dpif OVS_UNUSED, void **statep) | |
654 | { | |
655 | *statep = xzalloc(sizeof(struct dp_netdev_port_state)); | |
656 | return 0; | |
657 | } | |
658 | ||
72865317 | 659 | static int |
b0ec0f27 | 660 | dpif_netdev_port_dump_next(const struct dpif *dpif, void *state_, |
4c738a8d | 661 | struct dpif_port *dpif_port) |
72865317 | 662 | { |
b0ec0f27 | 663 | struct dp_netdev_port_state *state = state_; |
72865317 | 664 | struct dp_netdev *dp = get_dp_netdev(dpif); |
4e022ec0 | 665 | uint32_t port_idx; |
72865317 | 666 | |
97be1538 | 667 | ovs_mutex_lock(&dp_netdev_mutex); |
4e022ec0 AW |
668 | for (port_idx = odp_to_u32(state->port_no); |
669 | port_idx < MAX_PORTS; port_idx++) { | |
670 | struct dp_netdev_port *port = dp->ports[port_idx]; | |
b0ec0f27 | 671 | if (port) { |
4c738a8d | 672 | free(state->name); |
3efb6063 | 673 | state->name = xstrdup(netdev_get_name(port->netdev)); |
4c738a8d | 674 | dpif_port->name = state->name; |
0cbfe35d | 675 | dpif_port->type = port->type; |
4c738a8d | 676 | dpif_port->port_no = port->port_no; |
4e022ec0 | 677 | state->port_no = u32_to_odp(port_idx + 1); |
97be1538 | 678 | ovs_mutex_unlock(&dp_netdev_mutex); |
5279f8fd | 679 | |
b0ec0f27 | 680 | return 0; |
72865317 | 681 | } |
72865317 | 682 | } |
97be1538 | 683 | ovs_mutex_unlock(&dp_netdev_mutex); |
5279f8fd | 684 | |
b0ec0f27 BP |
685 | return EOF; |
686 | } | |
687 | ||
688 | static int | |
4c738a8d | 689 | dpif_netdev_port_dump_done(const struct dpif *dpif OVS_UNUSED, void *state_) |
b0ec0f27 | 690 | { |
4c738a8d BP |
691 | struct dp_netdev_port_state *state = state_; |
692 | free(state->name); | |
b0ec0f27 BP |
693 | free(state); |
694 | return 0; | |
72865317 BP |
695 | } |
696 | ||
697 | static int | |
67a4917b | 698 | dpif_netdev_port_poll(const struct dpif *dpif_, char **devnamep OVS_UNUSED) |
72865317 BP |
699 | { |
700 | struct dpif_netdev *dpif = dpif_netdev_cast(dpif_); | |
d33ed218 | 701 | uint64_t new_port_seq; |
5279f8fd BP |
702 | int error; |
703 | ||
97be1538 | 704 | ovs_mutex_lock(&dp_netdev_mutex); |
d33ed218 BP |
705 | new_port_seq = seq_read(dpif->dp->port_seq); |
706 | if (dpif->last_port_seq != new_port_seq) { | |
707 | dpif->last_port_seq = new_port_seq; | |
5279f8fd | 708 | error = ENOBUFS; |
72865317 | 709 | } else { |
5279f8fd | 710 | error = EAGAIN; |
72865317 | 711 | } |
97be1538 | 712 | ovs_mutex_unlock(&dp_netdev_mutex); |
5279f8fd BP |
713 | |
714 | return error; | |
72865317 BP |
715 | } |
716 | ||
717 | static void | |
718 | dpif_netdev_port_poll_wait(const struct dpif *dpif_) | |
719 | { | |
720 | struct dpif_netdev *dpif = dpif_netdev_cast(dpif_); | |
5279f8fd | 721 | |
97be1538 | 722 | ovs_mutex_lock(&dp_netdev_mutex); |
d33ed218 | 723 | seq_wait(dpif->dp->port_seq, dpif->last_port_seq); |
97be1538 | 724 | ovs_mutex_unlock(&dp_netdev_mutex); |
72865317 BP |
725 | } |
726 | ||
72865317 | 727 | static struct dp_netdev_flow * |
14608a15 | 728 | dp_netdev_lookup_flow(const struct dp_netdev *dp, const struct flow *key) |
72865317 BP |
729 | { |
730 | struct dp_netdev_flow *flow; | |
731 | ||
4e8e4213 | 732 | HMAP_FOR_EACH_WITH_HASH (flow, node, flow_hash(key, 0), &dp->flow_table) { |
72865317 BP |
733 | if (flow_equal(&flow->key, key)) { |
734 | return flow; | |
735 | } | |
736 | } | |
737 | return NULL; | |
738 | } | |
739 | ||
740 | static void | |
c97fb132 | 741 | get_dpif_flow_stats(struct dp_netdev_flow *flow, struct dpif_flow_stats *stats) |
feebdea2 BP |
742 | { |
743 | stats->n_packets = flow->packet_count; | |
744 | stats->n_bytes = flow->byte_count; | |
c97fb132 | 745 | stats->used = flow->used; |
734ec5ec | 746 | stats->tcp_flags = flow->tcp_flags; |
72865317 BP |
747 | } |
748 | ||
36956a7d BP |
749 | static int |
750 | dpif_netdev_flow_from_nlattrs(const struct nlattr *key, uint32_t key_len, | |
751 | struct flow *flow) | |
752 | { | |
586ddea5 BP |
753 | odp_port_t in_port; |
754 | ||
0135dc8b | 755 | if (odp_flow_key_to_flow(key, key_len, flow) != ODP_FIT_PERFECT) { |
36956a7d BP |
756 | /* This should not happen: it indicates that odp_flow_key_from_flow() |
757 | * and odp_flow_key_to_flow() disagree on the acceptable form of a | |
758 | * flow. Log the problem as an error, with enough details to enable | |
759 | * debugging. */ | |
760 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
761 | ||
762 | if (!VLOG_DROP_ERR(&rl)) { | |
763 | struct ds s; | |
764 | ||
765 | ds_init(&s); | |
766 | odp_flow_key_format(key, key_len, &s); | |
767 | VLOG_ERR("internal error parsing flow key %s", ds_cstr(&s)); | |
768 | ds_destroy(&s); | |
769 | } | |
770 | ||
771 | return EINVAL; | |
772 | } | |
773 | ||
586ddea5 BP |
774 | in_port = flow->in_port.odp_port; |
775 | if (!is_valid_port_number(in_port) && in_port != ODPP_NONE) { | |
18886b60 BP |
776 | return EINVAL; |
777 | } | |
778 | ||
36956a7d BP |
779 | return 0; |
780 | } | |
781 | ||
72865317 | 782 | static int |
693c4a01 | 783 | dpif_netdev_flow_get(const struct dpif *dpif, |
feebdea2 | 784 | const struct nlattr *nl_key, size_t nl_key_len, |
c97fb132 | 785 | struct ofpbuf **actionsp, struct dpif_flow_stats *stats) |
72865317 BP |
786 | { |
787 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
bc4a05c6 BP |
788 | struct dp_netdev_flow *flow; |
789 | struct flow key; | |
790 | int error; | |
36956a7d | 791 | |
feebdea2 | 792 | error = dpif_netdev_flow_from_nlattrs(nl_key, nl_key_len, &key); |
bc4a05c6 BP |
793 | if (error) { |
794 | return error; | |
795 | } | |
14608a15 | 796 | |
97be1538 | 797 | ovs_mutex_lock(&dp_netdev_mutex); |
bc4a05c6 | 798 | flow = dp_netdev_lookup_flow(dp, &key); |
5279f8fd BP |
799 | if (flow) { |
800 | if (stats) { | |
801 | get_dpif_flow_stats(flow, stats); | |
802 | } | |
803 | if (actionsp) { | |
804 | *actionsp = ofpbuf_clone_data(flow->actions, flow->actions_len); | |
805 | } | |
806 | } else { | |
807 | error = ENOENT; | |
72865317 | 808 | } |
97be1538 | 809 | ovs_mutex_unlock(&dp_netdev_mutex); |
bc4a05c6 | 810 | |
5279f8fd | 811 | return error; |
72865317 BP |
812 | } |
813 | ||
72865317 | 814 | static int |
feebdea2 BP |
815 | set_flow_actions(struct dp_netdev_flow *flow, |
816 | const struct nlattr *actions, size_t actions_len) | |
72865317 | 817 | { |
feebdea2 BP |
818 | flow->actions = xrealloc(flow->actions, actions_len); |
819 | flow->actions_len = actions_len; | |
820 | memcpy(flow->actions, actions, actions_len); | |
72865317 BP |
821 | return 0; |
822 | } | |
823 | ||
824 | static int | |
e1fef0f9 AS |
825 | dp_netdev_flow_add(struct dp_netdev *dp, const struct flow *key, |
826 | const struct nlattr *actions, size_t actions_len) | |
72865317 | 827 | { |
72865317 BP |
828 | struct dp_netdev_flow *flow; |
829 | int error; | |
830 | ||
ec6fde61 | 831 | flow = xzalloc(sizeof *flow); |
36956a7d | 832 | flow->key = *key; |
72865317 | 833 | |
feebdea2 | 834 | error = set_flow_actions(flow, actions, actions_len); |
72865317 BP |
835 | if (error) { |
836 | free(flow); | |
837 | return error; | |
838 | } | |
839 | ||
840 | hmap_insert(&dp->flow_table, &flow->node, flow_hash(&flow->key, 0)); | |
841 | return 0; | |
842 | } | |
843 | ||
844 | static void | |
845 | clear_stats(struct dp_netdev_flow *flow) | |
846 | { | |
c97fb132 | 847 | flow->used = 0; |
72865317 BP |
848 | flow->packet_count = 0; |
849 | flow->byte_count = 0; | |
734ec5ec | 850 | flow->tcp_flags = 0; |
72865317 BP |
851 | } |
852 | ||
853 | static int | |
89625d1e | 854 | dpif_netdev_flow_put(struct dpif *dpif, const struct dpif_flow_put *put) |
72865317 BP |
855 | { |
856 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
857 | struct dp_netdev_flow *flow; | |
14608a15 | 858 | struct flow key; |
36956a7d BP |
859 | int error; |
860 | ||
89625d1e | 861 | error = dpif_netdev_flow_from_nlattrs(put->key, put->key_len, &key); |
36956a7d BP |
862 | if (error) { |
863 | return error; | |
864 | } | |
72865317 | 865 | |
97be1538 | 866 | ovs_mutex_lock(&dp_netdev_mutex); |
14608a15 | 867 | flow = dp_netdev_lookup_flow(dp, &key); |
72865317 | 868 | if (!flow) { |
89625d1e | 869 | if (put->flags & DPIF_FP_CREATE) { |
72865317 | 870 | if (hmap_count(&dp->flow_table) < MAX_FLOWS) { |
89625d1e BP |
871 | if (put->stats) { |
872 | memset(put->stats, 0, sizeof *put->stats); | |
feebdea2 | 873 | } |
5279f8fd BP |
874 | error = dp_netdev_flow_add(dp, &key, put->actions, |
875 | put->actions_len); | |
72865317 | 876 | } else { |
5279f8fd | 877 | error = EFBIG; |
72865317 BP |
878 | } |
879 | } else { | |
5279f8fd | 880 | error = ENOENT; |
72865317 BP |
881 | } |
882 | } else { | |
89625d1e | 883 | if (put->flags & DPIF_FP_MODIFY) { |
5279f8fd | 884 | error = set_flow_actions(flow, put->actions, put->actions_len); |
feebdea2 | 885 | if (!error) { |
89625d1e BP |
886 | if (put->stats) { |
887 | get_dpif_flow_stats(flow, put->stats); | |
feebdea2 | 888 | } |
89625d1e | 889 | if (put->flags & DPIF_FP_ZERO_STATS) { |
feebdea2 BP |
890 | clear_stats(flow); |
891 | } | |
72865317 | 892 | } |
72865317 | 893 | } else { |
5279f8fd | 894 | error = EEXIST; |
72865317 BP |
895 | } |
896 | } | |
97be1538 | 897 | ovs_mutex_unlock(&dp_netdev_mutex); |
5279f8fd BP |
898 | |
899 | return error; | |
72865317 BP |
900 | } |
901 | ||
72865317 | 902 | static int |
b99d3cee | 903 | dpif_netdev_flow_del(struct dpif *dpif, const struct dpif_flow_del *del) |
72865317 BP |
904 | { |
905 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
906 | struct dp_netdev_flow *flow; | |
14608a15 | 907 | struct flow key; |
36956a7d BP |
908 | int error; |
909 | ||
b99d3cee | 910 | error = dpif_netdev_flow_from_nlattrs(del->key, del->key_len, &key); |
36956a7d BP |
911 | if (error) { |
912 | return error; | |
913 | } | |
72865317 | 914 | |
97be1538 | 915 | ovs_mutex_lock(&dp_netdev_mutex); |
14608a15 | 916 | flow = dp_netdev_lookup_flow(dp, &key); |
72865317 | 917 | if (flow) { |
b99d3cee BP |
918 | if (del->stats) { |
919 | get_dpif_flow_stats(flow, del->stats); | |
feebdea2 | 920 | } |
72865317 | 921 | dp_netdev_free_flow(dp, flow); |
72865317 | 922 | } else { |
5279f8fd | 923 | error = ENOENT; |
72865317 | 924 | } |
97be1538 | 925 | ovs_mutex_unlock(&dp_netdev_mutex); |
5279f8fd BP |
926 | |
927 | return error; | |
72865317 BP |
928 | } |
929 | ||
704a1e09 BP |
930 | struct dp_netdev_flow_state { |
931 | uint32_t bucket; | |
932 | uint32_t offset; | |
feebdea2 | 933 | struct nlattr *actions; |
19cf4069 | 934 | struct odputil_keybuf keybuf; |
c97fb132 | 935 | struct dpif_flow_stats stats; |
704a1e09 BP |
936 | }; |
937 | ||
72865317 | 938 | static int |
704a1e09 | 939 | dpif_netdev_flow_dump_start(const struct dpif *dpif OVS_UNUSED, void **statep) |
72865317 | 940 | { |
feebdea2 BP |
941 | struct dp_netdev_flow_state *state; |
942 | ||
943 | *statep = state = xmalloc(sizeof *state); | |
944 | state->bucket = 0; | |
945 | state->offset = 0; | |
946 | state->actions = NULL; | |
704a1e09 BP |
947 | return 0; |
948 | } | |
949 | ||
950 | static int | |
951 | dpif_netdev_flow_dump_next(const struct dpif *dpif, void *state_, | |
feebdea2 | 952 | const struct nlattr **key, size_t *key_len, |
e6cc0bab | 953 | const struct nlattr **mask, size_t *mask_len, |
feebdea2 | 954 | const struct nlattr **actions, size_t *actions_len, |
c97fb132 | 955 | const struct dpif_flow_stats **stats) |
704a1e09 BP |
956 | { |
957 | struct dp_netdev_flow_state *state = state_; | |
72865317 BP |
958 | struct dp_netdev *dp = get_dp_netdev(dpif); |
959 | struct dp_netdev_flow *flow; | |
704a1e09 | 960 | struct hmap_node *node; |
14608a15 | 961 | |
97be1538 | 962 | ovs_mutex_lock(&dp_netdev_mutex); |
704a1e09 BP |
963 | node = hmap_at_position(&dp->flow_table, &state->bucket, &state->offset); |
964 | if (!node) { | |
97be1538 | 965 | ovs_mutex_unlock(&dp_netdev_mutex); |
704a1e09 | 966 | return EOF; |
72865317 | 967 | } |
704a1e09 BP |
968 | |
969 | flow = CONTAINER_OF(node, struct dp_netdev_flow, node); | |
36956a7d | 970 | |
feebdea2 BP |
971 | if (key) { |
972 | struct ofpbuf buf; | |
973 | ||
19cf4069 | 974 | ofpbuf_use_stack(&buf, &state->keybuf, sizeof state->keybuf); |
4e022ec0 | 975 | odp_flow_key_from_flow(&buf, &flow->key, flow->key.in_port.odp_port); |
36956a7d | 976 | |
feebdea2 BP |
977 | *key = buf.data; |
978 | *key_len = buf.size; | |
979 | } | |
980 | ||
e6cc0bab AZ |
981 | if (mask) { |
982 | *mask = NULL; | |
983 | *mask_len = 0; | |
984 | } | |
985 | ||
feebdea2 BP |
986 | if (actions) { |
987 | free(state->actions); | |
988 | state->actions = xmemdup(flow->actions, flow->actions_len); | |
989 | ||
990 | *actions = state->actions; | |
991 | *actions_len = flow->actions_len; | |
992 | } | |
993 | ||
994 | if (stats) { | |
c97fb132 | 995 | get_dpif_flow_stats(flow, &state->stats); |
feebdea2 BP |
996 | *stats = &state->stats; |
997 | } | |
704a1e09 | 998 | |
97be1538 | 999 | ovs_mutex_unlock(&dp_netdev_mutex); |
704a1e09 BP |
1000 | return 0; |
1001 | } | |
1002 | ||
1003 | static int | |
feebdea2 | 1004 | dpif_netdev_flow_dump_done(const struct dpif *dpif OVS_UNUSED, void *state_) |
704a1e09 | 1005 | { |
feebdea2 BP |
1006 | struct dp_netdev_flow_state *state = state_; |
1007 | ||
1008 | free(state->actions); | |
704a1e09 BP |
1009 | free(state); |
1010 | return 0; | |
72865317 BP |
1011 | } |
1012 | ||
1013 | static int | |
89625d1e | 1014 | dpif_netdev_execute(struct dpif *dpif, const struct dpif_execute *execute) |
72865317 BP |
1015 | { |
1016 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
1017 | struct ofpbuf copy; | |
ae412e7d | 1018 | struct flow key; |
72865317 BP |
1019 | int error; |
1020 | ||
89625d1e BP |
1021 | if (execute->packet->size < ETH_HEADER_LEN || |
1022 | execute->packet->size > UINT16_MAX) { | |
72865317 BP |
1023 | return EINVAL; |
1024 | } | |
1025 | ||
109ee281 | 1026 | /* Make a deep copy of 'packet', because we might modify its data. */ |
89625d1e | 1027 | ofpbuf_init(©, DP_NETDEV_HEADROOM + execute->packet->size); |
109ee281 | 1028 | ofpbuf_reserve(©, DP_NETDEV_HEADROOM); |
89625d1e | 1029 | ofpbuf_put(©, execute->packet->data, execute->packet->size); |
80e5eed9 | 1030 | |
4e022ec0 | 1031 | flow_extract(©, 0, 0, NULL, NULL, &key); |
89625d1e BP |
1032 | error = dpif_netdev_flow_from_nlattrs(execute->key, execute->key_len, |
1033 | &key); | |
18886b60 | 1034 | if (!error) { |
97be1538 | 1035 | ovs_mutex_lock(&dp_netdev_mutex); |
4edb9ae9 | 1036 | dp_netdev_execute_actions(dp, ©, &key, |
89625d1e | 1037 | execute->actions, execute->actions_len); |
97be1538 | 1038 | ovs_mutex_unlock(&dp_netdev_mutex); |
18886b60 | 1039 | } |
109ee281 BP |
1040 | |
1041 | ofpbuf_uninit(©); | |
72865317 BP |
1042 | return error; |
1043 | } | |
1044 | ||
1045 | static int | |
a12b3ead | 1046 | dpif_netdev_recv_set(struct dpif *dpif OVS_UNUSED, bool enable OVS_UNUSED) |
72865317 | 1047 | { |
82272ede | 1048 | return 0; |
72865317 BP |
1049 | } |
1050 | ||
5bf93d67 EJ |
1051 | static int |
1052 | dpif_netdev_queue_to_priority(const struct dpif *dpif OVS_UNUSED, | |
1053 | uint32_t queue_id, uint32_t *priority) | |
1054 | { | |
1055 | *priority = queue_id; | |
1056 | return 0; | |
1057 | } | |
1058 | ||
856081f6 | 1059 | static struct dp_netdev_queue * |
72865317 BP |
1060 | find_nonempty_queue(struct dpif *dpif) |
1061 | { | |
72865317 | 1062 | struct dp_netdev *dp = get_dp_netdev(dpif); |
72865317 BP |
1063 | int i; |
1064 | ||
1065 | for (i = 0; i < N_QUEUES; i++) { | |
856081f6 | 1066 | struct dp_netdev_queue *q = &dp->queues[i]; |
a12b3ead | 1067 | if (q->head != q->tail) { |
856081f6 | 1068 | return q; |
72865317 BP |
1069 | } |
1070 | } | |
856081f6 | 1071 | return NULL; |
72865317 BP |
1072 | } |
1073 | ||
1074 | static int | |
90a7c55e BP |
1075 | dpif_netdev_recv(struct dpif *dpif, struct dpif_upcall *upcall, |
1076 | struct ofpbuf *buf) | |
72865317 | 1077 | { |
5279f8fd BP |
1078 | struct dp_netdev_queue *q; |
1079 | int error; | |
1080 | ||
97be1538 | 1081 | ovs_mutex_lock(&dp_netdev_mutex); |
5279f8fd | 1082 | q = find_nonempty_queue(dpif); |
856081f6 | 1083 | if (q) { |
d88b629b BP |
1084 | struct dp_netdev_upcall *u = &q->upcalls[q->tail++ & QUEUE_MASK]; |
1085 | ||
1086 | *upcall = u->upcall; | |
1087 | upcall->packet = buf; | |
b3907fbc | 1088 | |
90a7c55e | 1089 | ofpbuf_uninit(buf); |
d88b629b | 1090 | *buf = u->buf; |
90a7c55e | 1091 | |
5279f8fd | 1092 | error = 0; |
72865317 | 1093 | } else { |
5279f8fd | 1094 | error = EAGAIN; |
72865317 | 1095 | } |
97be1538 | 1096 | ovs_mutex_unlock(&dp_netdev_mutex); |
5279f8fd BP |
1097 | |
1098 | return error; | |
72865317 BP |
1099 | } |
1100 | ||
1101 | static void | |
1102 | dpif_netdev_recv_wait(struct dpif *dpif) | |
1103 | { | |
d33ed218 BP |
1104 | struct dp_netdev *dp = get_dp_netdev(dpif); |
1105 | uint64_t seq; | |
5279f8fd | 1106 | |
97be1538 | 1107 | ovs_mutex_lock(&dp_netdev_mutex); |
d33ed218 | 1108 | seq = seq_read(dp->queue_seq); |
856081f6 | 1109 | if (find_nonempty_queue(dpif)) { |
72865317 | 1110 | poll_immediate_wake(); |
d33ed218 BP |
1111 | } else { |
1112 | seq_wait(dp->queue_seq, seq); | |
72865317 | 1113 | } |
97be1538 | 1114 | ovs_mutex_unlock(&dp_netdev_mutex); |
72865317 | 1115 | } |
1ba530f4 BP |
1116 | |
1117 | static void | |
1118 | dpif_netdev_recv_purge(struct dpif *dpif) | |
1119 | { | |
1120 | struct dpif_netdev *dpif_netdev = dpif_netdev_cast(dpif); | |
97be1538 | 1121 | ovs_mutex_lock(&dp_netdev_mutex); |
1ba530f4 | 1122 | dp_netdev_purge_queues(dpif_netdev->dp); |
97be1538 | 1123 | ovs_mutex_unlock(&dp_netdev_mutex); |
1ba530f4 | 1124 | } |
72865317 BP |
1125 | \f |
1126 | static void | |
c1fe014d | 1127 | dp_netdev_flow_used(struct dp_netdev_flow *flow, const struct ofpbuf *packet) |
72865317 | 1128 | { |
c97fb132 | 1129 | flow->used = time_msec(); |
72865317 BP |
1130 | flow->packet_count++; |
1131 | flow->byte_count += packet->size; | |
c1fe014d | 1132 | flow->tcp_flags |= packet_get_tcp_flags(packet, &flow->key); |
72865317 BP |
1133 | } |
1134 | ||
1135 | static void | |
1136 | dp_netdev_port_input(struct dp_netdev *dp, struct dp_netdev_port *port, | |
6c13071b | 1137 | struct ofpbuf *packet, uint32_t skb_priority, |
1362e248 | 1138 | uint32_t pkt_mark, const struct flow_tnl *tnl) |
72865317 BP |
1139 | { |
1140 | struct dp_netdev_flow *flow; | |
14608a15 | 1141 | struct flow key; |
4e022ec0 | 1142 | union flow_in_port in_port_; |
72865317 | 1143 | |
1805876e BP |
1144 | if (packet->size < ETH_HEADER_LEN) { |
1145 | return; | |
1146 | } | |
4e022ec0 | 1147 | in_port_.odp_port = port->port_no; |
1362e248 | 1148 | flow_extract(packet, skb_priority, pkt_mark, tnl, &in_port_, &key); |
72865317 BP |
1149 | flow = dp_netdev_lookup_flow(dp, &key); |
1150 | if (flow) { | |
c1fe014d | 1151 | dp_netdev_flow_used(flow, packet); |
72865317 | 1152 | dp_netdev_execute_actions(dp, packet, &key, |
cdee00fd | 1153 | flow->actions, flow->actions_len); |
72865317 BP |
1154 | dp->n_hit++; |
1155 | } else { | |
1156 | dp->n_missed++; | |
e995e3df | 1157 | dp_netdev_output_userspace(dp, packet, DPIF_UC_MISS, &key, NULL); |
72865317 BP |
1158 | } |
1159 | } | |
1160 | ||
1161 | static void | |
640e1b20 | 1162 | dpif_netdev_run(struct dpif *dpif) |
72865317 | 1163 | { |
640e1b20 | 1164 | struct dp_netdev_port *port; |
5279f8fd | 1165 | struct dp_netdev *dp; |
72865317 | 1166 | struct ofpbuf packet; |
72865317 | 1167 | |
97be1538 | 1168 | ovs_mutex_lock(&dp_netdev_mutex); |
5279f8fd | 1169 | dp = get_dp_netdev(dpif); |
3b0aab93 BP |
1170 | ofpbuf_init(&packet, |
1171 | DP_NETDEV_HEADROOM + VLAN_ETH_HEADER_LEN + dp->max_mtu); | |
72865317 | 1172 | |
640e1b20 BP |
1173 | LIST_FOR_EACH (port, node, &dp->port_list) { |
1174 | int error; | |
1175 | ||
1176 | /* Reset packet contents. */ | |
1177 | ofpbuf_clear(&packet); | |
1178 | ofpbuf_reserve(&packet, DP_NETDEV_HEADROOM); | |
1179 | ||
796223f5 | 1180 | error = port->rx ? netdev_rx_recv(port->rx, &packet) : EOPNOTSUPP; |
640e1b20 | 1181 | if (!error) { |
6c13071b | 1182 | dp_netdev_port_input(dp, port, &packet, 0, 0, NULL); |
640e1b20 BP |
1183 | } else if (error != EAGAIN && error != EOPNOTSUPP) { |
1184 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
3aa30359 | 1185 | |
640e1b20 | 1186 | VLOG_ERR_RL(&rl, "error receiving data from %s: %s", |
10a89ef0 | 1187 | netdev_get_name(port->netdev), ovs_strerror(error)); |
72865317 BP |
1188 | } |
1189 | } | |
1190 | ofpbuf_uninit(&packet); | |
97be1538 | 1191 | ovs_mutex_unlock(&dp_netdev_mutex); |
72865317 BP |
1192 | } |
1193 | ||
1194 | static void | |
640e1b20 | 1195 | dpif_netdev_wait(struct dpif *dpif) |
72865317 | 1196 | { |
640e1b20 | 1197 | struct dp_netdev_port *port; |
462278db | 1198 | |
5279f8fd BP |
1199 | /* There is a race here, if thread A calls dpif_netdev_wait(dpif) and |
1200 | * thread B calls dpif_port_add(dpif) or dpif_port_remove(dpif) before | |
1201 | * A makes it to poll_block(). | |
1202 | * | |
1203 | * But I think it doesn't matter: | |
1204 | * | |
1205 | * - In the dpif_port_add() case, A will not wake up when a packet | |
1206 | * arrives on the new port, but this would also happen if the | |
1207 | * ordering were reversed. | |
1208 | * | |
1209 | * - In the dpif_port_remove() case, A might wake up spuriously, but | |
1210 | * that is harmless. */ | |
1211 | ||
97be1538 | 1212 | ovs_mutex_lock(&dp_netdev_mutex); |
5279f8fd | 1213 | LIST_FOR_EACH (port, node, &get_dp_netdev(dpif)->port_list) { |
796223f5 BP |
1214 | if (port->rx) { |
1215 | netdev_rx_wait(port->rx); | |
1216 | } | |
72865317 | 1217 | } |
97be1538 | 1218 | ovs_mutex_unlock(&dp_netdev_mutex); |
72865317 BP |
1219 | } |
1220 | ||
72865317 | 1221 | static void |
f094af7b | 1222 | dp_netdev_output_port(void *dp_, struct ofpbuf *packet, uint32_t out_port) |
72865317 | 1223 | { |
f094af7b | 1224 | struct dp_netdev *dp = dp_; |
2105ccc8 | 1225 | struct dp_netdev_port *p = dp->ports[out_port]; |
72865317 BP |
1226 | if (p) { |
1227 | netdev_send(p->netdev, packet); | |
1228 | } | |
1229 | } | |
1230 | ||
72865317 | 1231 | static int |
b85d8d61 | 1232 | dp_netdev_output_userspace(struct dp_netdev *dp, const struct ofpbuf *packet, |
e995e3df BP |
1233 | int queue_no, const struct flow *flow, |
1234 | const struct nlattr *userdata) | |
72865317 | 1235 | { |
856081f6 | 1236 | struct dp_netdev_queue *q = &dp->queues[queue_no]; |
e995e3df BP |
1237 | if (q->head - q->tail < MAX_QUEUE_LEN) { |
1238 | struct dp_netdev_upcall *u = &q->upcalls[q->head++ & QUEUE_MASK]; | |
1239 | struct dpif_upcall *upcall = &u->upcall; | |
1240 | struct ofpbuf *buf = &u->buf; | |
1241 | size_t buf_size; | |
1242 | ||
1243 | upcall->type = queue_no; | |
1244 | ||
1245 | /* Allocate buffer big enough for everything. */ | |
1246 | buf_size = ODPUTIL_FLOW_KEY_BYTES + 2 + packet->size; | |
1247 | if (userdata) { | |
1248 | buf_size += NLA_ALIGN(userdata->nla_len); | |
1249 | } | |
1250 | ofpbuf_init(buf, buf_size); | |
72865317 | 1251 | |
e995e3df | 1252 | /* Put ODP flow. */ |
4e022ec0 | 1253 | odp_flow_key_from_flow(buf, flow, flow->in_port.odp_port); |
e995e3df BP |
1254 | upcall->key = buf->data; |
1255 | upcall->key_len = buf->size; | |
d88b629b | 1256 | |
e995e3df BP |
1257 | /* Put userdata. */ |
1258 | if (userdata) { | |
1259 | upcall->userdata = ofpbuf_put(buf, userdata, | |
1260 | NLA_ALIGN(userdata->nla_len)); | |
1261 | } | |
856081f6 | 1262 | |
e995e3df BP |
1263 | /* Put packet. |
1264 | * | |
1265 | * We adjust 'data' and 'size' in 'buf' so that only the packet itself | |
1266 | * is visible in 'upcall->packet'. The ODP flow and (if present) | |
1267 | * userdata become part of the headroom. */ | |
1268 | ofpbuf_put_zeros(buf, 2); | |
1269 | buf->data = ofpbuf_put(buf, packet->data, packet->size); | |
1270 | buf->size = packet->size; | |
1271 | upcall->packet = buf; | |
856081f6 | 1272 | |
d33ed218 BP |
1273 | seq_change(dp->queue_seq); |
1274 | ||
e995e3df BP |
1275 | return 0; |
1276 | } else { | |
1277 | dp->n_lost++; | |
1278 | return ENOBUFS; | |
1279 | } | |
72865317 BP |
1280 | } |
1281 | ||
26c6b6cd | 1282 | static void |
f094af7b SH |
1283 | dp_netdev_action_userspace(void *dp, struct ofpbuf *packet, |
1284 | const struct flow *key, | |
1285 | const struct nlattr *userdata) | |
98403001 | 1286 | { |
98403001 BP |
1287 | dp_netdev_output_userspace(dp, packet, DPIF_UC_ACTION, key, userdata); |
1288 | } | |
1289 | ||
4edb9ae9 | 1290 | static void |
72865317 | 1291 | dp_netdev_execute_actions(struct dp_netdev *dp, |
14608a15 | 1292 | struct ofpbuf *packet, struct flow *key, |
cdee00fd | 1293 | const struct nlattr *actions, |
cf22f8cb | 1294 | size_t actions_len) |
72865317 | 1295 | { |
f094af7b SH |
1296 | odp_execute_actions(dp, packet, key, actions, actions_len, |
1297 | dp_netdev_output_port, dp_netdev_action_userspace); | |
72865317 BP |
1298 | } |
1299 | ||
1300 | const struct dpif_class dpif_netdev_class = { | |
72865317 | 1301 | "netdev", |
2197d7ab | 1302 | dpif_netdev_enumerate, |
0aeaabc8 | 1303 | dpif_netdev_port_open_type, |
72865317 BP |
1304 | dpif_netdev_open, |
1305 | dpif_netdev_close, | |
7dab847a | 1306 | dpif_netdev_destroy, |
640e1b20 BP |
1307 | dpif_netdev_run, |
1308 | dpif_netdev_wait, | |
72865317 | 1309 | dpif_netdev_get_stats, |
72865317 BP |
1310 | dpif_netdev_port_add, |
1311 | dpif_netdev_port_del, | |
1312 | dpif_netdev_port_query_by_number, | |
1313 | dpif_netdev_port_query_by_name, | |
996c1b3d | 1314 | dpif_netdev_get_max_ports, |
98403001 | 1315 | NULL, /* port_get_pid */ |
b0ec0f27 BP |
1316 | dpif_netdev_port_dump_start, |
1317 | dpif_netdev_port_dump_next, | |
1318 | dpif_netdev_port_dump_done, | |
72865317 BP |
1319 | dpif_netdev_port_poll, |
1320 | dpif_netdev_port_poll_wait, | |
72865317 BP |
1321 | dpif_netdev_flow_get, |
1322 | dpif_netdev_flow_put, | |
1323 | dpif_netdev_flow_del, | |
1324 | dpif_netdev_flow_flush, | |
704a1e09 BP |
1325 | dpif_netdev_flow_dump_start, |
1326 | dpif_netdev_flow_dump_next, | |
1327 | dpif_netdev_flow_dump_done, | |
72865317 | 1328 | dpif_netdev_execute, |
6bc60024 | 1329 | NULL, /* operate */ |
a12b3ead | 1330 | dpif_netdev_recv_set, |
5bf93d67 | 1331 | dpif_netdev_queue_to_priority, |
72865317 BP |
1332 | dpif_netdev_recv, |
1333 | dpif_netdev_recv_wait, | |
1ba530f4 | 1334 | dpif_netdev_recv_purge, |
72865317 | 1335 | }; |
614c4892 | 1336 | |
74cc3969 BP |
1337 | static void |
1338 | dpif_dummy_change_port_number(struct unixctl_conn *conn, int argc OVS_UNUSED, | |
1339 | const char *argv[], void *aux OVS_UNUSED) | |
1340 | { | |
1341 | struct dp_netdev_port *port; | |
1342 | struct dp_netdev *dp; | |
1343 | int port_no; | |
1344 | ||
1345 | dp = shash_find_data(&dp_netdevs, argv[1]); | |
1346 | if (!dp || !dpif_netdev_class_is_dummy(dp->class)) { | |
1347 | unixctl_command_reply_error(conn, "unknown datapath or not a dummy"); | |
1348 | return; | |
1349 | } | |
1350 | ||
1351 | if (get_port_by_name(dp, argv[2], &port)) { | |
1352 | unixctl_command_reply_error(conn, "unknown port"); | |
1353 | return; | |
1354 | } | |
1355 | ||
1356 | port_no = atoi(argv[3]); | |
1357 | if (port_no <= 0 || port_no >= MAX_PORTS) { | |
1358 | unixctl_command_reply_error(conn, "bad port number"); | |
1359 | return; | |
1360 | } | |
1361 | if (dp->ports[port_no]) { | |
1362 | unixctl_command_reply_error(conn, "port number already in use"); | |
1363 | return; | |
1364 | } | |
1365 | dp->ports[odp_to_u32(port->port_no)] = NULL; | |
1366 | dp->ports[port_no] = port; | |
1367 | port->port_no = u32_to_odp(port_no); | |
d33ed218 | 1368 | seq_change(dp->port_seq); |
74cc3969 BP |
1369 | unixctl_command_reply(conn, NULL); |
1370 | } | |
1371 | ||
0cbfe35d BP |
1372 | static void |
1373 | dpif_dummy_register__(const char *type) | |
1374 | { | |
1375 | struct dpif_class *class; | |
1376 | ||
1377 | class = xmalloc(sizeof *class); | |
1378 | *class = dpif_netdev_class; | |
1379 | class->type = xstrdup(type); | |
1380 | dp_register_provider(class); | |
1381 | } | |
1382 | ||
614c4892 | 1383 | void |
0cbfe35d | 1384 | dpif_dummy_register(bool override) |
614c4892 | 1385 | { |
0cbfe35d BP |
1386 | if (override) { |
1387 | struct sset types; | |
1388 | const char *type; | |
1389 | ||
1390 | sset_init(&types); | |
1391 | dp_enumerate_types(&types); | |
1392 | SSET_FOR_EACH (type, &types) { | |
1393 | if (!dp_unregister_provider(type)) { | |
1394 | dpif_dummy_register__(type); | |
1395 | } | |
1396 | } | |
1397 | sset_destroy(&types); | |
614c4892 | 1398 | } |
0cbfe35d BP |
1399 | |
1400 | dpif_dummy_register__("dummy"); | |
74cc3969 BP |
1401 | |
1402 | unixctl_command_register("dpif-dummy/change-port-number", | |
1403 | "DP PORT NEW-NUMBER", | |
1404 | 3, 3, dpif_dummy_change_port_number, NULL); | |
614c4892 | 1405 | } |