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96fba48f | 1 | /* |
0a2869d5 | 2 | * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 Nicira, Inc. |
96fba48f 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> | |
9fe3b9a2 | 18 | |
93451a0a | 19 | #include "dpif-netlink.h" |
96fba48f | 20 | |
96fba48f BP |
21 | #include <ctype.h> |
22 | #include <errno.h> | |
23 | #include <fcntl.h> | |
24 | #include <inttypes.h> | |
25 | #include <net/if.h> | |
b90fa799 | 26 | #include <linux/types.h> |
aae51f53 | 27 | #include <linux/pkt_sched.h> |
8522ba09 | 28 | #include <poll.h> |
96fba48f | 29 | #include <stdlib.h> |
8522ba09 | 30 | #include <strings.h> |
50f80534 | 31 | #include <sys/epoll.h> |
10dcf8de | 32 | #include <sys/stat.h> |
96fba48f BP |
33 | #include <unistd.h> |
34 | ||
773cd538 | 35 | #include "bitmap.h" |
96fba48f | 36 | #include "dpif-provider.h" |
3e8a2ad1 | 37 | #include "openvswitch/dynamic-string.h" |
eb8b28e7 | 38 | #include "flow.h" |
1579cf67 | 39 | #include "fat-rwlock.h" |
3abc4a1a | 40 | #include "netdev.h" |
032aa6a3 | 41 | #include "netdev-linux.h" |
c3827f61 | 42 | #include "netdev-vport.h" |
c11c9f4a | 43 | #include "netlink-conntrack.h" |
45c8d3a1 | 44 | #include "netlink-notifier.h" |
982b8810 | 45 | #include "netlink-socket.h" |
856081f6 | 46 | #include "netlink.h" |
feebdea2 | 47 | #include "odp-util.h" |
64c96779 | 48 | #include "openvswitch/ofpbuf.h" |
856081f6 | 49 | #include "packets.h" |
96fba48f | 50 | #include "poll-loop.h" |
17411ecf | 51 | #include "random.h" |
ee89ea7b | 52 | #include "openvswitch/shash.h" |
b3c01ed3 | 53 | #include "sset.h" |
14b4d2f9 | 54 | #include "timeval.h" |
d6569377 | 55 | #include "unaligned.h" |
96fba48f | 56 | #include "util.h" |
e6211adc | 57 | #include "openvswitch/vlog.h" |
5136ce49 | 58 | |
93451a0a | 59 | VLOG_DEFINE_THIS_MODULE(dpif_netlink); |
09cac43f NR |
60 | #ifdef _WIN32 |
61 | enum { WINDOWS = 1 }; | |
62 | #else | |
63 | enum { WINDOWS = 0 }; | |
64 | #endif | |
95b1d73a | 65 | enum { MAX_PORTS = USHRT_MAX }; |
773cd538 | 66 | |
24b019f8 JP |
67 | /* This ethtool flag was introduced in Linux 2.6.24, so it might be |
68 | * missing if we have old headers. */ | |
69 | #define ETH_FLAG_LRO (1 << 15) /* LRO is enabled */ | |
70 | ||
93451a0a | 71 | struct dpif_netlink_dp { |
aaff4b55 BP |
72 | /* Generic Netlink header. */ |
73 | uint8_t cmd; | |
d6569377 | 74 | |
df2c07f4 | 75 | /* struct ovs_header. */ |
254f2dc8 | 76 | int dp_ifindex; |
d6569377 BP |
77 | |
78 | /* Attributes. */ | |
df2c07f4 | 79 | const char *name; /* OVS_DP_ATTR_NAME. */ |
fcd5d230 | 80 | const uint32_t *upcall_pid; /* OVS_DP_ATTR_UPCALL_PID. */ |
b7fd5e38 | 81 | uint32_t user_features; /* OVS_DP_ATTR_USER_FEATURES */ |
6a54dedc BP |
82 | const struct ovs_dp_stats *stats; /* OVS_DP_ATTR_STATS. */ |
83 | const struct ovs_dp_megaflow_stats *megaflow_stats; | |
847108dc | 84 | /* OVS_DP_ATTR_MEGAFLOW_STATS.*/ |
d6569377 BP |
85 | }; |
86 | ||
93451a0a AS |
87 | static void dpif_netlink_dp_init(struct dpif_netlink_dp *); |
88 | static int dpif_netlink_dp_from_ofpbuf(struct dpif_netlink_dp *, | |
89 | const struct ofpbuf *); | |
90 | static void dpif_netlink_dp_dump_start(struct nl_dump *); | |
91 | static int dpif_netlink_dp_transact(const struct dpif_netlink_dp *request, | |
92 | struct dpif_netlink_dp *reply, | |
93 | struct ofpbuf **bufp); | |
94 | static int dpif_netlink_dp_get(const struct dpif *, | |
95 | struct dpif_netlink_dp *reply, | |
96 | struct ofpbuf **bufp); | |
97 | ||
98 | struct dpif_netlink_flow { | |
37a1300c BP |
99 | /* Generic Netlink header. */ |
100 | uint8_t cmd; | |
d6569377 | 101 | |
df2c07f4 | 102 | /* struct ovs_header. */ |
d6569377 | 103 | unsigned int nlmsg_flags; |
254f2dc8 | 104 | int dp_ifindex; |
d6569377 BP |
105 | |
106 | /* Attributes. | |
107 | * | |
0e70cdcb BP |
108 | * The 'stats' member points to 64-bit data that might only be aligned on |
109 | * 32-bit boundaries, so get_unaligned_u64() should be used to access its | |
110 | * values. | |
d2a23af2 | 111 | * |
df2c07f4 | 112 | * If 'actions' is nonnull then OVS_FLOW_ATTR_ACTIONS will be included in |
d2a23af2 | 113 | * the Netlink version of the command, even if actions_len is zero. */ |
df2c07f4 | 114 | const struct nlattr *key; /* OVS_FLOW_ATTR_KEY. */ |
d6569377 | 115 | size_t key_len; |
e6cc0bab AZ |
116 | const struct nlattr *mask; /* OVS_FLOW_ATTR_MASK. */ |
117 | size_t mask_len; | |
df2c07f4 | 118 | const struct nlattr *actions; /* OVS_FLOW_ATTR_ACTIONS. */ |
d6569377 | 119 | size_t actions_len; |
70e5ed6f JS |
120 | ovs_u128 ufid; /* OVS_FLOW_ATTR_FLOW_ID. */ |
121 | bool ufid_present; /* Is there a UFID? */ | |
122 | bool ufid_terse; /* Skip serializing key/mask/acts? */ | |
df2c07f4 JP |
123 | const struct ovs_flow_stats *stats; /* OVS_FLOW_ATTR_STATS. */ |
124 | const uint8_t *tcp_flags; /* OVS_FLOW_ATTR_TCP_FLAGS. */ | |
0e70cdcb | 125 | const ovs_32aligned_u64 *used; /* OVS_FLOW_ATTR_USED. */ |
df2c07f4 | 126 | bool clear; /* OVS_FLOW_ATTR_CLEAR. */ |
43f9ac0a | 127 | bool probe; /* OVS_FLOW_ATTR_PROBE. */ |
d6569377 BP |
128 | }; |
129 | ||
93451a0a AS |
130 | static void dpif_netlink_flow_init(struct dpif_netlink_flow *); |
131 | static int dpif_netlink_flow_from_ofpbuf(struct dpif_netlink_flow *, | |
132 | const struct ofpbuf *); | |
133 | static void dpif_netlink_flow_to_ofpbuf(const struct dpif_netlink_flow *, | |
134 | struct ofpbuf *); | |
135 | static int dpif_netlink_flow_transact(struct dpif_netlink_flow *request, | |
136 | struct dpif_netlink_flow *reply, | |
137 | struct ofpbuf **bufp); | |
138 | static void dpif_netlink_flow_get_stats(const struct dpif_netlink_flow *, | |
139 | struct dpif_flow_stats *); | |
7af12bd7 | 140 | static void dpif_netlink_flow_to_dpif_flow(struct dpif *, struct dpif_flow *, |
93451a0a | 141 | const struct dpif_netlink_flow *); |
d6569377 | 142 | |
989fd548 | 143 | /* One of the dpif channels between the kernel and userspace. */ |
fe3d61b3 | 144 | struct dpif_channel { |
14b4d2f9 | 145 | struct nl_sock *sock; /* Netlink socket. */ |
14b4d2f9 | 146 | long long int last_poll; /* Last time this channel was polled. */ |
fe3d61b3 BP |
147 | }; |
148 | ||
09cac43f NR |
149 | #ifdef _WIN32 |
150 | #define VPORT_SOCK_POOL_SIZE 1 | |
151 | /* On Windows, there is no native support for epoll. There are equivalent | |
152 | * interfaces though, that are not used currently. For simpicity, a pool of | |
153 | * netlink sockets is used. Each socket is represented by 'struct | |
154 | * dpif_windows_vport_sock'. Since it is a pool, multiple OVS ports may be | |
155 | * sharing the same socket. In the future, we can add a reference count and | |
156 | * such fields. */ | |
157 | struct dpif_windows_vport_sock { | |
158 | struct nl_sock *nl_sock; /* netlink socket. */ | |
159 | }; | |
160 | #endif | |
161 | ||
1579cf67 AW |
162 | struct dpif_handler { |
163 | struct dpif_channel *channels;/* Array of channels for each handler. */ | |
164 | struct epoll_event *epoll_events; | |
165 | int epoll_fd; /* epoll fd that includes channel socks. */ | |
166 | int n_events; /* Num events returned by epoll_wait(). */ | |
167 | int event_offset; /* Offset into 'epoll_events'. */ | |
09cac43f NR |
168 | |
169 | #ifdef _WIN32 | |
170 | /* Pool of sockets. */ | |
171 | struct dpif_windows_vport_sock *vport_sock_pool; | |
172 | size_t last_used_pool_idx; /* Index to aid in allocating a | |
173 | socket in the pool to a port. */ | |
174 | #endif | |
1579cf67 | 175 | }; |
14b4d2f9 | 176 | |
96fba48f | 177 | /* Datapath interface for the openvswitch Linux kernel module. */ |
93451a0a | 178 | struct dpif_netlink { |
96fba48f | 179 | struct dpif dpif; |
254f2dc8 | 180 | int dp_ifindex; |
e9e28be3 | 181 | |
b063d9f0 | 182 | /* Upcall messages. */ |
1579cf67 AW |
183 | struct fat_rwlock upcall_lock; |
184 | struct dpif_handler *handlers; | |
185 | uint32_t n_handlers; /* Num of upcall handlers. */ | |
186 | int uc_array_size; /* Size of 'handler->channels' and */ | |
187 | /* 'handler->epoll_events'. */ | |
982b8810 | 188 | |
e9e28be3 | 189 | /* Change notification. */ |
e4516b20 | 190 | struct nl_sock *port_notifier; /* vport multicast group subscriber. */ |
61eae437 | 191 | bool refresh_channels; |
96fba48f BP |
192 | }; |
193 | ||
93451a0a | 194 | static void report_loss(struct dpif_netlink *, struct dpif_channel *, |
9b00386b | 195 | uint32_t ch_idx, uint32_t handler_id); |
1579cf67 | 196 | |
96fba48f BP |
197 | static struct vlog_rate_limit error_rl = VLOG_RATE_LIMIT_INIT(9999, 5); |
198 | ||
e4516b20 BP |
199 | /* Generic Netlink family numbers for OVS. |
200 | * | |
93451a0a | 201 | * Initialized by dpif_netlink_init(). */ |
df2c07f4 JP |
202 | static int ovs_datapath_family; |
203 | static int ovs_vport_family; | |
204 | static int ovs_flow_family; | |
205 | static int ovs_packet_family; | |
982b8810 | 206 | |
e4516b20 BP |
207 | /* Generic Netlink multicast groups for OVS. |
208 | * | |
93451a0a | 209 | * Initialized by dpif_netlink_init(). */ |
e4516b20 | 210 | static unsigned int ovs_vport_mcgroup; |
982b8810 | 211 | |
93451a0a AS |
212 | static int dpif_netlink_init(void); |
213 | static int open_dpif(const struct dpif_netlink_dp *, struct dpif **); | |
214 | static uint32_t dpif_netlink_port_get_pid(const struct dpif *, | |
215 | odp_port_t port_no, uint32_t hash); | |
09cac43f | 216 | static void dpif_netlink_handler_uninit(struct dpif_handler *handler); |
93451a0a AS |
217 | static int dpif_netlink_refresh_channels(struct dpif_netlink *, |
218 | uint32_t n_handlers); | |
219 | static void dpif_netlink_vport_to_ofpbuf(const struct dpif_netlink_vport *, | |
220 | struct ofpbuf *); | |
221 | static int dpif_netlink_vport_from_ofpbuf(struct dpif_netlink_vport *, | |
222 | const struct ofpbuf *); | |
f0fef760 | 223 | |
93451a0a AS |
224 | static struct dpif_netlink * |
225 | dpif_netlink_cast(const struct dpif *dpif) | |
96fba48f | 226 | { |
93451a0a AS |
227 | dpif_assert_class(dpif, &dpif_netlink_class); |
228 | return CONTAINER_OF(dpif, struct dpif_netlink, dpif); | |
96fba48f BP |
229 | } |
230 | ||
d3d22744 | 231 | static int |
93451a0a AS |
232 | dpif_netlink_enumerate(struct sset *all_dps, |
233 | const struct dpif_class *dpif_class OVS_UNUSED) | |
d3d22744 | 234 | { |
aaff4b55 | 235 | struct nl_dump dump; |
d57695d7 JS |
236 | uint64_t reply_stub[NL_DUMP_BUFSIZE / 8]; |
237 | struct ofpbuf msg, buf; | |
aaff4b55 | 238 | int error; |
982b8810 | 239 | |
93451a0a | 240 | error = dpif_netlink_init(); |
aaff4b55 BP |
241 | if (error) { |
242 | return error; | |
982b8810 | 243 | } |
d3d22744 | 244 | |
d57695d7 | 245 | ofpbuf_use_stub(&buf, reply_stub, sizeof reply_stub); |
93451a0a | 246 | dpif_netlink_dp_dump_start(&dump); |
d57695d7 | 247 | while (nl_dump_next(&dump, &msg, &buf)) { |
93451a0a | 248 | struct dpif_netlink_dp dp; |
d6569377 | 249 | |
93451a0a | 250 | if (!dpif_netlink_dp_from_ofpbuf(&dp, &msg)) { |
d0c23a1a | 251 | sset_add(all_dps, dp.name); |
d3d22744 BP |
252 | } |
253 | } | |
d57695d7 | 254 | ofpbuf_uninit(&buf); |
aaff4b55 | 255 | return nl_dump_done(&dump); |
d3d22744 BP |
256 | } |
257 | ||
96fba48f | 258 | static int |
93451a0a AS |
259 | dpif_netlink_open(const struct dpif_class *class OVS_UNUSED, const char *name, |
260 | bool create, struct dpif **dpifp) | |
96fba48f | 261 | { |
93451a0a | 262 | struct dpif_netlink_dp dp_request, dp; |
c19e6535 | 263 | struct ofpbuf *buf; |
ea36840f | 264 | uint32_t upcall_pid; |
c19e6535 | 265 | int error; |
96fba48f | 266 | |
93451a0a | 267 | error = dpif_netlink_init(); |
982b8810 BP |
268 | if (error) { |
269 | return error; | |
270 | } | |
271 | ||
982b8810 | 272 | /* Create or look up datapath. */ |
93451a0a | 273 | dpif_netlink_dp_init(&dp_request); |
ea36840f BP |
274 | if (create) { |
275 | dp_request.cmd = OVS_DP_CMD_NEW; | |
276 | upcall_pid = 0; | |
277 | dp_request.upcall_pid = &upcall_pid; | |
278 | } else { | |
b7fd5e38 TG |
279 | /* Use OVS_DP_CMD_SET to report user features */ |
280 | dp_request.cmd = OVS_DP_CMD_SET; | |
ea36840f | 281 | } |
254f2dc8 | 282 | dp_request.name = name; |
b7fd5e38 | 283 | dp_request.user_features |= OVS_DP_F_UNALIGNED; |
1579cf67 | 284 | dp_request.user_features |= OVS_DP_F_VPORT_PIDS; |
93451a0a | 285 | error = dpif_netlink_dp_transact(&dp_request, &dp, &buf); |
982b8810 BP |
286 | if (error) { |
287 | return error; | |
c19e6535 | 288 | } |
254f2dc8 | 289 | |
e4516b20 | 290 | error = open_dpif(&dp, dpifp); |
8f4a4df5 | 291 | ofpbuf_delete(buf); |
e4516b20 | 292 | return error; |
c19e6535 BP |
293 | } |
294 | ||
e4516b20 | 295 | static int |
93451a0a | 296 | open_dpif(const struct dpif_netlink_dp *dp, struct dpif **dpifp) |
c19e6535 | 297 | { |
93451a0a | 298 | struct dpif_netlink *dpif; |
c19e6535 | 299 | |
17411ecf | 300 | dpif = xzalloc(sizeof *dpif); |
e4516b20 | 301 | dpif->port_notifier = NULL; |
1579cf67 | 302 | fat_rwlock_init(&dpif->upcall_lock); |
c19e6535 | 303 | |
93451a0a | 304 | dpif_init(&dpif->dpif, &dpif_netlink_class, dp->name, |
254f2dc8 | 305 | dp->dp_ifindex, dp->dp_ifindex); |
c19e6535 | 306 | |
254f2dc8 | 307 | dpif->dp_ifindex = dp->dp_ifindex; |
c19e6535 | 308 | *dpifp = &dpif->dpif; |
e4516b20 BP |
309 | |
310 | return 0; | |
96fba48f BP |
311 | } |
312 | ||
1579cf67 AW |
313 | /* Destroys the netlink sockets pointed by the elements in 'socksp' |
314 | * and frees the 'socksp'. */ | |
17411ecf | 315 | static void |
09cac43f | 316 | vport_del_socksp__(struct nl_sock **socksp, uint32_t n_socks) |
17411ecf | 317 | { |
1579cf67 | 318 | size_t i; |
17411ecf | 319 | |
1579cf67 AW |
320 | for (i = 0; i < n_socks; i++) { |
321 | nl_sock_destroy(socksp[i]); | |
50f80534 | 322 | } |
989fd548 | 323 | |
1579cf67 AW |
324 | free(socksp); |
325 | } | |
989fd548 | 326 | |
1579cf67 AW |
327 | /* Creates an array of netlink sockets. Returns an array of the |
328 | * corresponding pointers. Records the error in 'error'. */ | |
329 | static struct nl_sock ** | |
09cac43f | 330 | vport_create_socksp__(uint32_t n_socks, int *error) |
1579cf67 AW |
331 | { |
332 | struct nl_sock **socksp = xzalloc(n_socks * sizeof *socksp); | |
333 | size_t i; | |
334 | ||
335 | for (i = 0; i < n_socks; i++) { | |
336 | *error = nl_sock_create(NETLINK_GENERIC, &socksp[i]); | |
337 | if (*error) { | |
338 | goto error; | |
989fd548 | 339 | } |
1579cf67 | 340 | } |
989fd548 | 341 | |
1579cf67 | 342 | return socksp; |
9fafa796 | 343 | |
1579cf67 | 344 | error: |
09cac43f | 345 | vport_del_socksp__(socksp, n_socks); |
989fd548 | 346 | |
1579cf67 AW |
347 | return NULL; |
348 | } | |
349 | ||
09cac43f NR |
350 | #ifdef _WIN32 |
351 | static void | |
352 | vport_delete_sock_pool(struct dpif_handler *handler) | |
353 | OVS_REQ_WRLOCK(dpif->upcall_lock) | |
354 | { | |
355 | if (handler->vport_sock_pool) { | |
356 | uint32_t i; | |
357 | struct dpif_windows_vport_sock *sock_pool = | |
358 | handler->vport_sock_pool; | |
359 | ||
360 | for (i = 0; i < VPORT_SOCK_POOL_SIZE; i++) { | |
361 | if (sock_pool[i].nl_sock) { | |
362 | nl_sock_unsubscribe_packets(sock_pool[i].nl_sock); | |
363 | nl_sock_destroy(sock_pool[i].nl_sock); | |
364 | sock_pool[i].nl_sock = NULL; | |
365 | } | |
366 | } | |
367 | ||
368 | free(handler->vport_sock_pool); | |
369 | handler->vport_sock_pool = NULL; | |
370 | } | |
371 | } | |
372 | ||
373 | static int | |
374 | vport_create_sock_pool(struct dpif_handler *handler) | |
375 | OVS_REQ_WRLOCK(dpif->upcall_lock) | |
376 | { | |
377 | struct dpif_windows_vport_sock *sock_pool; | |
378 | size_t i; | |
379 | int error = 0; | |
380 | ||
381 | sock_pool = xzalloc(VPORT_SOCK_POOL_SIZE * sizeof *sock_pool); | |
382 | for (i = 0; i < VPORT_SOCK_POOL_SIZE; i++) { | |
383 | error = nl_sock_create(NETLINK_GENERIC, &sock_pool[i].nl_sock); | |
384 | if (error) { | |
385 | goto error; | |
386 | } | |
387 | ||
388 | /* Enable the netlink socket to receive packets. This is equivalent to | |
389 | * calling nl_sock_join_mcgroup() to receive events. */ | |
390 | error = nl_sock_subscribe_packets(sock_pool[i].nl_sock); | |
391 | if (error) { | |
392 | goto error; | |
393 | } | |
394 | } | |
395 | ||
396 | handler->vport_sock_pool = sock_pool; | |
397 | handler->last_used_pool_idx = 0; | |
398 | return 0; | |
399 | ||
400 | error: | |
401 | vport_delete_sock_pool(handler); | |
402 | return error; | |
403 | } | |
404 | ||
405 | /* Returns an array pointers to netlink sockets. The sockets are picked from a | |
406 | * pool. Records the error in 'error'. */ | |
407 | static struct nl_sock ** | |
408 | vport_create_socksp_windows(struct dpif_netlink *dpif, int *error) | |
409 | OVS_REQ_WRLOCK(dpif->upcall_lock) | |
410 | { | |
411 | uint32_t n_socks = dpif->n_handlers; | |
412 | struct nl_sock **socksp; | |
413 | size_t i; | |
414 | ||
415 | ovs_assert(n_socks <= 1); | |
416 | socksp = xzalloc(n_socks * sizeof *socksp); | |
417 | ||
418 | /* Pick netlink sockets to use in a round-robin fashion from each | |
419 | * handler's pool of sockets. */ | |
420 | for (i = 0; i < n_socks; i++) { | |
421 | struct dpif_handler *handler = &dpif->handlers[i]; | |
422 | struct dpif_windows_vport_sock *sock_pool = handler->vport_sock_pool; | |
423 | size_t index = handler->last_used_pool_idx; | |
424 | ||
425 | /* A pool of sockets is allocated when the handler is initialized. */ | |
426 | if (sock_pool == NULL) { | |
427 | free(socksp); | |
428 | *error = EINVAL; | |
429 | return NULL; | |
430 | } | |
431 | ||
432 | ovs_assert(index < VPORT_SOCK_POOL_SIZE); | |
433 | socksp[i] = sock_pool[index].nl_sock; | |
434 | socksp[i] = sock_pool[index].nl_sock; | |
435 | ovs_assert(socksp[i]); | |
436 | index = (index == VPORT_SOCK_POOL_SIZE - 1) ? 0 : index + 1; | |
437 | handler->last_used_pool_idx = index; | |
438 | } | |
439 | ||
440 | return socksp; | |
441 | } | |
442 | ||
443 | static void | |
444 | vport_del_socksp_windows(struct dpif_netlink *dpif, struct nl_sock **socksp) | |
445 | { | |
446 | free(socksp); | |
447 | } | |
448 | #endif /* _WIN32 */ | |
449 | ||
450 | static struct nl_sock ** | |
451 | vport_create_socksp(struct dpif_netlink *dpif, int *error) | |
452 | { | |
453 | #ifdef _WIN32 | |
454 | return vport_create_socksp_windows(dpif, error); | |
455 | #else | |
456 | return vport_create_socksp__(dpif->n_handlers, error); | |
457 | #endif | |
458 | } | |
459 | ||
460 | static void | |
461 | vport_del_socksp(struct dpif_netlink *dpif, struct nl_sock **socksp) | |
462 | { | |
463 | #ifdef _WIN32 | |
464 | vport_del_socksp_windows(dpif, socksp); | |
465 | #else | |
466 | vport_del_socksp__(socksp, dpif->n_handlers); | |
467 | #endif | |
468 | } | |
469 | ||
1579cf67 AW |
470 | /* Given the array of pointers to netlink sockets 'socksp', returns |
471 | * the array of corresponding pids. If the 'socksp' is NULL, returns | |
472 | * a single-element array of value 0. */ | |
473 | static uint32_t * | |
474 | vport_socksp_to_pids(struct nl_sock **socksp, uint32_t n_socks) | |
475 | { | |
476 | uint32_t *pids; | |
477 | ||
478 | if (!socksp) { | |
479 | pids = xzalloc(sizeof *pids); | |
480 | } else { | |
481 | size_t i; | |
482 | ||
483 | pids = xzalloc(n_socks * sizeof *pids); | |
484 | for (i = 0; i < n_socks; i++) { | |
485 | pids[i] = nl_sock_pid(socksp[i]); | |
486 | } | |
17411ecf | 487 | } |
989fd548 | 488 | |
1579cf67 AW |
489 | return pids; |
490 | } | |
491 | ||
492 | /* Given the port number 'port_idx', extracts the pids of netlink sockets | |
493 | * associated to the port and assigns it to 'upcall_pids'. */ | |
494 | static bool | |
93451a0a | 495 | vport_get_pids(struct dpif_netlink *dpif, uint32_t port_idx, |
1579cf67 AW |
496 | uint32_t **upcall_pids) |
497 | { | |
498 | uint32_t *pids; | |
499 | size_t i; | |
989fd548 | 500 | |
1579cf67 AW |
501 | /* Since the nl_sock can only be assigned in either all |
502 | * or none "dpif->handlers" channels, the following check | |
503 | * would suffice. */ | |
504 | if (!dpif->handlers[0].channels[port_idx].sock) { | |
505 | return false; | |
506 | } | |
09cac43f | 507 | ovs_assert(!WINDOWS || dpif->n_handlers <= 1); |
1579cf67 AW |
508 | |
509 | pids = xzalloc(dpif->n_handlers * sizeof *pids); | |
510 | ||
511 | for (i = 0; i < dpif->n_handlers; i++) { | |
512 | pids[i] = nl_sock_pid(dpif->handlers[i].channels[port_idx].sock); | |
513 | } | |
514 | ||
515 | *upcall_pids = pids; | |
989fd548 | 516 | |
1579cf67 | 517 | return true; |
989fd548 JP |
518 | } |
519 | ||
520 | static int | |
93451a0a | 521 | vport_add_channels(struct dpif_netlink *dpif, odp_port_t port_no, |
1579cf67 | 522 | struct nl_sock **socksp) |
989fd548 JP |
523 | { |
524 | struct epoll_event event; | |
4e022ec0 | 525 | uint32_t port_idx = odp_to_u32(port_no); |
1579cf67 AW |
526 | size_t i, j; |
527 | int error; | |
989fd548 | 528 | |
1579cf67 | 529 | if (dpif->handlers == NULL) { |
989fd548 JP |
530 | return 0; |
531 | } | |
532 | ||
1579cf67 AW |
533 | /* We assume that the datapath densely chooses port numbers, which can |
534 | * therefore be used as an index into 'channels' and 'epoll_events' of | |
535 | * 'dpif->handler'. */ | |
4e022ec0 AW |
536 | if (port_idx >= dpif->uc_array_size) { |
537 | uint32_t new_size = port_idx + 1; | |
989fd548 | 538 | |
12d76859 | 539 | if (new_size > MAX_PORTS) { |
989fd548 JP |
540 | VLOG_WARN_RL(&error_rl, "%s: datapath port %"PRIu32" too big", |
541 | dpif_name(&dpif->dpif), port_no); | |
542 | return EFBIG; | |
543 | } | |
544 | ||
1579cf67 AW |
545 | for (i = 0; i < dpif->n_handlers; i++) { |
546 | struct dpif_handler *handler = &dpif->handlers[i]; | |
547 | ||
548 | handler->channels = xrealloc(handler->channels, | |
549 | new_size * sizeof *handler->channels); | |
550 | ||
551 | for (j = dpif->uc_array_size; j < new_size; j++) { | |
552 | handler->channels[j].sock = NULL; | |
553 | } | |
554 | ||
555 | handler->epoll_events = xrealloc(handler->epoll_events, | |
556 | new_size * sizeof *handler->epoll_events); | |
989fd548 | 557 | |
1579cf67 | 558 | } |
989fd548 JP |
559 | dpif->uc_array_size = new_size; |
560 | } | |
561 | ||
562 | memset(&event, 0, sizeof event); | |
563 | event.events = EPOLLIN; | |
4e022ec0 | 564 | event.data.u32 = port_idx; |
989fd548 | 565 | |
1579cf67 AW |
566 | for (i = 0; i < dpif->n_handlers; i++) { |
567 | struct dpif_handler *handler = &dpif->handlers[i]; | |
568 | ||
09cac43f | 569 | #ifndef _WIN32 |
1579cf67 AW |
570 | if (epoll_ctl(handler->epoll_fd, EPOLL_CTL_ADD, nl_sock_fd(socksp[i]), |
571 | &event) < 0) { | |
572 | error = errno; | |
573 | goto error; | |
574 | } | |
93451a0a | 575 | #endif |
1579cf67 AW |
576 | dpif->handlers[i].channels[port_idx].sock = socksp[i]; |
577 | dpif->handlers[i].channels[port_idx].last_poll = LLONG_MIN; | |
578 | } | |
989fd548 JP |
579 | |
580 | return 0; | |
1579cf67 AW |
581 | |
582 | error: | |
583 | for (j = 0; j < i; j++) { | |
09cac43f | 584 | #ifndef _WIN32 |
1579cf67 AW |
585 | epoll_ctl(dpif->handlers[j].epoll_fd, EPOLL_CTL_DEL, |
586 | nl_sock_fd(socksp[j]), NULL); | |
93451a0a | 587 | #endif |
1579cf67 AW |
588 | dpif->handlers[j].channels[port_idx].sock = NULL; |
589 | } | |
590 | ||
591 | return error; | |
989fd548 JP |
592 | } |
593 | ||
594 | static void | |
93451a0a | 595 | vport_del_channels(struct dpif_netlink *dpif, odp_port_t port_no) |
989fd548 | 596 | { |
4e022ec0 | 597 | uint32_t port_idx = odp_to_u32(port_no); |
1579cf67 | 598 | size_t i; |
989fd548 | 599 | |
1579cf67 | 600 | if (!dpif->handlers || port_idx >= dpif->uc_array_size) { |
989fd548 JP |
601 | return; |
602 | } | |
603 | ||
1579cf67 AW |
604 | /* Since the sock can only be assigned in either all or none |
605 | * of "dpif->handlers" channels, the following check would | |
606 | * suffice. */ | |
607 | if (!dpif->handlers[0].channels[port_idx].sock) { | |
989fd548 JP |
608 | return; |
609 | } | |
610 | ||
1579cf67 AW |
611 | for (i = 0; i < dpif->n_handlers; i++) { |
612 | struct dpif_handler *handler = &dpif->handlers[i]; | |
09cac43f | 613 | #ifndef _WIN32 |
1579cf67 AW |
614 | epoll_ctl(handler->epoll_fd, EPOLL_CTL_DEL, |
615 | nl_sock_fd(handler->channels[port_idx].sock), NULL); | |
616 | nl_sock_destroy(handler->channels[port_idx].sock); | |
09cac43f | 617 | #endif |
1579cf67 AW |
618 | handler->channels[port_idx].sock = NULL; |
619 | handler->event_offset = handler->n_events = 0; | |
620 | } | |
621 | } | |
622 | ||
623 | static void | |
93451a0a AS |
624 | destroy_all_channels(struct dpif_netlink *dpif) |
625 | OVS_REQ_WRLOCK(dpif->upcall_lock) | |
1579cf67 AW |
626 | { |
627 | unsigned int i; | |
628 | ||
629 | if (!dpif->handlers) { | |
630 | return; | |
631 | } | |
632 | ||
633 | for (i = 0; i < dpif->uc_array_size; i++ ) { | |
93451a0a | 634 | struct dpif_netlink_vport vport_request; |
1579cf67 AW |
635 | uint32_t upcall_pids = 0; |
636 | ||
637 | /* Since the sock can only be assigned in either all or none | |
638 | * of "dpif->handlers" channels, the following check would | |
639 | * suffice. */ | |
640 | if (!dpif->handlers[0].channels[i].sock) { | |
641 | continue; | |
642 | } | |
643 | ||
644 | /* Turn off upcalls. */ | |
93451a0a | 645 | dpif_netlink_vport_init(&vport_request); |
1579cf67 AW |
646 | vport_request.cmd = OVS_VPORT_CMD_SET; |
647 | vport_request.dp_ifindex = dpif->dp_ifindex; | |
648 | vport_request.port_no = u32_to_odp(i); | |
a78f446a | 649 | vport_request.n_upcall_pids = 1; |
1579cf67 | 650 | vport_request.upcall_pids = &upcall_pids; |
93451a0a | 651 | dpif_netlink_vport_transact(&vport_request, NULL, NULL); |
1579cf67 AW |
652 | |
653 | vport_del_channels(dpif, u32_to_odp(i)); | |
654 | } | |
655 | ||
656 | for (i = 0; i < dpif->n_handlers; i++) { | |
657 | struct dpif_handler *handler = &dpif->handlers[i]; | |
658 | ||
09cac43f | 659 | dpif_netlink_handler_uninit(handler); |
1579cf67 AW |
660 | free(handler->epoll_events); |
661 | free(handler->channels); | |
662 | } | |
989fd548 | 663 | |
1579cf67 AW |
664 | free(dpif->handlers); |
665 | dpif->handlers = NULL; | |
666 | dpif->n_handlers = 0; | |
667 | dpif->uc_array_size = 0; | |
17411ecf JG |
668 | } |
669 | ||
96fba48f | 670 | static void |
93451a0a | 671 | dpif_netlink_close(struct dpif *dpif_) |
96fba48f | 672 | { |
93451a0a | 673 | struct dpif_netlink *dpif = dpif_netlink_cast(dpif_); |
c7178a0b | 674 | |
e4516b20 | 675 | nl_sock_destroy(dpif->port_notifier); |
1579cf67 AW |
676 | |
677 | fat_rwlock_wrlock(&dpif->upcall_lock); | |
678 | destroy_all_channels(dpif); | |
679 | fat_rwlock_unlock(&dpif->upcall_lock); | |
680 | ||
681 | fat_rwlock_destroy(&dpif->upcall_lock); | |
96fba48f BP |
682 | free(dpif); |
683 | } | |
684 | ||
685 | static int | |
93451a0a | 686 | dpif_netlink_destroy(struct dpif *dpif_) |
96fba48f | 687 | { |
93451a0a AS |
688 | struct dpif_netlink *dpif = dpif_netlink_cast(dpif_); |
689 | struct dpif_netlink_dp dp; | |
d6569377 | 690 | |
93451a0a | 691 | dpif_netlink_dp_init(&dp); |
df2c07f4 | 692 | dp.cmd = OVS_DP_CMD_DEL; |
254f2dc8 | 693 | dp.dp_ifindex = dpif->dp_ifindex; |
93451a0a | 694 | return dpif_netlink_dp_transact(&dp, NULL, NULL); |
96fba48f BP |
695 | } |
696 | ||
a36de779 | 697 | static bool |
93451a0a | 698 | dpif_netlink_run(struct dpif *dpif_) |
61eae437 | 699 | { |
93451a0a | 700 | struct dpif_netlink *dpif = dpif_netlink_cast(dpif_); |
1579cf67 | 701 | |
61eae437 BP |
702 | if (dpif->refresh_channels) { |
703 | dpif->refresh_channels = false; | |
1579cf67 | 704 | fat_rwlock_wrlock(&dpif->upcall_lock); |
93451a0a | 705 | dpif_netlink_refresh_channels(dpif, dpif->n_handlers); |
1579cf67 | 706 | fat_rwlock_unlock(&dpif->upcall_lock); |
61eae437 | 707 | } |
a36de779 | 708 | return false; |
61eae437 BP |
709 | } |
710 | ||
96fba48f | 711 | static int |
93451a0a | 712 | dpif_netlink_get_stats(const struct dpif *dpif_, struct dpif_dp_stats *stats) |
96fba48f | 713 | { |
93451a0a | 714 | struct dpif_netlink_dp dp; |
d6569377 BP |
715 | struct ofpbuf *buf; |
716 | int error; | |
717 | ||
93451a0a | 718 | error = dpif_netlink_dp_get(dpif_, &dp, &buf); |
d6569377 | 719 | if (!error) { |
6a54dedc BP |
720 | memset(stats, 0, sizeof *stats); |
721 | ||
722 | if (dp.stats) { | |
723 | stats->n_hit = get_32aligned_u64(&dp.stats->n_hit); | |
724 | stats->n_missed = get_32aligned_u64(&dp.stats->n_missed); | |
725 | stats->n_lost = get_32aligned_u64(&dp.stats->n_lost); | |
726 | stats->n_flows = get_32aligned_u64(&dp.stats->n_flows); | |
727 | } | |
728 | ||
729 | if (dp.megaflow_stats) { | |
730 | stats->n_masks = dp.megaflow_stats->n_masks; | |
731 | stats->n_mask_hit = get_32aligned_u64( | |
732 | &dp.megaflow_stats->n_mask_hit); | |
733 | } else { | |
734 | stats->n_masks = UINT32_MAX; | |
735 | stats->n_mask_hit = UINT64_MAX; | |
736 | } | |
d6569377 BP |
737 | ofpbuf_delete(buf); |
738 | } | |
739 | return error; | |
96fba48f BP |
740 | } |
741 | ||
b9ad7294 | 742 | static const char * |
93451a0a | 743 | get_vport_type(const struct dpif_netlink_vport *vport) |
b9ad7294 EJ |
744 | { |
745 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 20); | |
746 | ||
747 | switch (vport->type) { | |
5ed51209 JS |
748 | case OVS_VPORT_TYPE_NETDEV: { |
749 | const char *type = netdev_get_type_from_name(vport->name); | |
750 | ||
751 | return type ? type : "system"; | |
752 | } | |
b9ad7294 EJ |
753 | |
754 | case OVS_VPORT_TYPE_INTERNAL: | |
755 | return "internal"; | |
756 | ||
c1fc1411 JG |
757 | case OVS_VPORT_TYPE_GENEVE: |
758 | return "geneve"; | |
759 | ||
b9ad7294 EJ |
760 | case OVS_VPORT_TYPE_GRE: |
761 | return "gre"; | |
762 | ||
b9ad7294 EJ |
763 | case OVS_VPORT_TYPE_VXLAN: |
764 | return "vxlan"; | |
765 | ||
a6ae068b LJ |
766 | case OVS_VPORT_TYPE_LISP: |
767 | return "lisp"; | |
768 | ||
4237026e PS |
769 | case OVS_VPORT_TYPE_STT: |
770 | return "stt"; | |
771 | ||
b9ad7294 EJ |
772 | case OVS_VPORT_TYPE_UNSPEC: |
773 | case __OVS_VPORT_TYPE_MAX: | |
774 | break; | |
775 | } | |
776 | ||
777 | VLOG_WARN_RL(&rl, "dp%d: port `%s' has unsupported type %u", | |
778 | vport->dp_ifindex, vport->name, (unsigned int) vport->type); | |
779 | return "unknown"; | |
780 | } | |
781 | ||
c060c4cf EJ |
782 | static enum ovs_vport_type |
783 | netdev_to_ovs_vport_type(const struct netdev *netdev) | |
784 | { | |
785 | const char *type = netdev_get_type(netdev); | |
786 | ||
787 | if (!strcmp(type, "tap") || !strcmp(type, "system")) { | |
788 | return OVS_VPORT_TYPE_NETDEV; | |
789 | } else if (!strcmp(type, "internal")) { | |
790 | return OVS_VPORT_TYPE_INTERNAL; | |
4237026e PS |
791 | } else if (strstr(type, "stt")) { |
792 | return OVS_VPORT_TYPE_STT; | |
c1fc1411 JG |
793 | } else if (!strcmp(type, "geneve")) { |
794 | return OVS_VPORT_TYPE_GENEVE; | |
c060c4cf EJ |
795 | } else if (strstr(type, "gre")) { |
796 | return OVS_VPORT_TYPE_GRE; | |
c060c4cf EJ |
797 | } else if (!strcmp(type, "vxlan")) { |
798 | return OVS_VPORT_TYPE_VXLAN; | |
a6ae068b LJ |
799 | } else if (!strcmp(type, "lisp")) { |
800 | return OVS_VPORT_TYPE_LISP; | |
c060c4cf EJ |
801 | } else { |
802 | return OVS_VPORT_TYPE_UNSPEC; | |
803 | } | |
804 | } | |
805 | ||
96fba48f | 806 | static int |
93451a0a AS |
807 | dpif_netlink_port_add__(struct dpif_netlink *dpif, struct netdev *netdev, |
808 | odp_port_t *port_nop) | |
b90de034 | 809 | OVS_REQ_WRLOCK(dpif->upcall_lock) |
96fba48f | 810 | { |
26508d9a | 811 | const struct netdev_tunnel_config *tnl_cfg; |
3aa30359 BP |
812 | char namebuf[NETDEV_VPORT_NAME_BUFSIZE]; |
813 | const char *name = netdev_vport_get_dpif_port(netdev, | |
814 | namebuf, sizeof namebuf); | |
c3827f61 | 815 | const char *type = netdev_get_type(netdev); |
93451a0a | 816 | struct dpif_netlink_vport request, reply; |
c19e6535 | 817 | struct ofpbuf *buf; |
26508d9a KM |
818 | uint64_t options_stub[64 / 8]; |
819 | struct ofpbuf options; | |
1579cf67 AW |
820 | struct nl_sock **socksp = NULL; |
821 | uint32_t *upcall_pids; | |
822 | int error = 0; | |
96fba48f | 823 | |
1579cf67 | 824 | if (dpif->handlers) { |
09cac43f | 825 | socksp = vport_create_socksp(dpif, &error); |
1579cf67 | 826 | if (!socksp) { |
989fd548 JP |
827 | return error; |
828 | } | |
829 | } | |
830 | ||
93451a0a | 831 | dpif_netlink_vport_init(&request); |
df2c07f4 | 832 | request.cmd = OVS_VPORT_CMD_NEW; |
254f2dc8 | 833 | request.dp_ifindex = dpif->dp_ifindex; |
c060c4cf | 834 | request.type = netdev_to_ovs_vport_type(netdev); |
df2c07f4 | 835 | if (request.type == OVS_VPORT_TYPE_UNSPEC) { |
c283069c BP |
836 | VLOG_WARN_RL(&error_rl, "%s: cannot create port `%s' because it has " |
837 | "unsupported type `%s'", | |
9b00386b | 838 | dpif_name(&dpif->dpif), name, type); |
09cac43f | 839 | vport_del_socksp(dpif, socksp); |
c283069c BP |
840 | return EINVAL; |
841 | } | |
c19e6535 | 842 | request.name = name; |
c3827f61 | 843 | |
24b019f8 | 844 | if (request.type == OVS_VPORT_TYPE_NETDEV) { |
93451a0a | 845 | #ifdef _WIN32 |
09cac43f | 846 | /* XXX : Map appropiate Windows handle */ |
93451a0a | 847 | #else |
24b019f8 | 848 | netdev_linux_ethtool_set_flag(netdev, ETH_FLAG_LRO, "LRO", false); |
93451a0a | 849 | #endif |
24b019f8 JP |
850 | } |
851 | ||
26508d9a | 852 | tnl_cfg = netdev_get_tunnel_config(netdev); |
526df7d8 | 853 | if (tnl_cfg && (tnl_cfg->dst_port != 0 || tnl_cfg->exts)) { |
26508d9a | 854 | ofpbuf_use_stack(&options, options_stub, sizeof options_stub); |
526df7d8 TG |
855 | if (tnl_cfg->dst_port) { |
856 | nl_msg_put_u16(&options, OVS_TUNNEL_ATTR_DST_PORT, | |
857 | ntohs(tnl_cfg->dst_port)); | |
858 | } | |
859 | if (tnl_cfg->exts) { | |
860 | size_t ext_ofs; | |
861 | int i; | |
862 | ||
863 | ext_ofs = nl_msg_start_nested(&options, OVS_TUNNEL_ATTR_EXTENSION); | |
864 | for (i = 0; i < 32; i++) { | |
865 | if (tnl_cfg->exts & (1 << i)) { | |
866 | nl_msg_put_flag(&options, i); | |
867 | } | |
868 | } | |
869 | nl_msg_end_nested(&options, ext_ofs); | |
870 | } | |
6fd6ed71 PS |
871 | request.options = options.data; |
872 | request.options_len = options.size; | |
26508d9a KM |
873 | } |
874 | ||
78a2d59c | 875 | request.port_no = *port_nop; |
1579cf67 | 876 | upcall_pids = vport_socksp_to_pids(socksp, dpif->n_handlers); |
aeaae11f | 877 | request.n_upcall_pids = socksp ? dpif->n_handlers : 1; |
1579cf67 | 878 | request.upcall_pids = upcall_pids; |
95b1d73a | 879 | |
93451a0a | 880 | error = dpif_netlink_vport_transact(&request, &reply, &buf); |
78a2d59c JP |
881 | if (!error) { |
882 | *port_nop = reply.port_no; | |
2510ba7c | 883 | } else { |
4e022ec0 | 884 | if (error == EBUSY && *port_nop != ODPP_NONE) { |
2510ba7c | 885 | VLOG_INFO("%s: requested port %"PRIu32" is in use", |
9b00386b | 886 | dpif_name(&dpif->dpif), *port_nop); |
2510ba7c | 887 | } |
1579cf67 | 888 | |
09cac43f | 889 | vport_del_socksp(dpif, socksp); |
1579cf67 | 890 | goto exit; |
78a2d59c | 891 | } |
c3827f61 | 892 | |
1579cf67 AW |
893 | if (socksp) { |
894 | error = vport_add_channels(dpif, *port_nop, socksp); | |
989fd548 JP |
895 | if (error) { |
896 | VLOG_INFO("%s: could not add channel for port %s", | |
9b00386b | 897 | dpif_name(&dpif->dpif), name); |
989fd548 JP |
898 | |
899 | /* Delete the port. */ | |
93451a0a | 900 | dpif_netlink_vport_init(&request); |
989fd548 JP |
901 | request.cmd = OVS_VPORT_CMD_DEL; |
902 | request.dp_ifindex = dpif->dp_ifindex; | |
903 | request.port_no = *port_nop; | |
93451a0a | 904 | dpif_netlink_vport_transact(&request, NULL, NULL); |
09cac43f | 905 | vport_del_socksp(dpif, socksp); |
1579cf67 | 906 | goto exit; |
989fd548 JP |
907 | } |
908 | } | |
1579cf67 | 909 | free(socksp); |
989fd548 | 910 | |
1579cf67 AW |
911 | exit: |
912 | ofpbuf_delete(buf); | |
913 | free(upcall_pids); | |
914 | ||
915 | return error; | |
96fba48f BP |
916 | } |
917 | ||
918 | static int | |
93451a0a AS |
919 | dpif_netlink_port_add(struct dpif *dpif_, struct netdev *netdev, |
920 | odp_port_t *port_nop) | |
9fafa796 | 921 | { |
93451a0a | 922 | struct dpif_netlink *dpif = dpif_netlink_cast(dpif_); |
9fafa796 BP |
923 | int error; |
924 | ||
1579cf67 | 925 | fat_rwlock_wrlock(&dpif->upcall_lock); |
93451a0a | 926 | error = dpif_netlink_port_add__(dpif, netdev, port_nop); |
1579cf67 | 927 | fat_rwlock_unlock(&dpif->upcall_lock); |
9fafa796 BP |
928 | |
929 | return error; | |
930 | } | |
931 | ||
932 | static int | |
93451a0a | 933 | dpif_netlink_port_del__(struct dpif_netlink *dpif, odp_port_t port_no) |
b90de034 | 934 | OVS_REQ_WRLOCK(dpif->upcall_lock) |
96fba48f | 935 | { |
93451a0a | 936 | struct dpif_netlink_vport vport; |
773cd538 | 937 | int error; |
c19e6535 | 938 | |
93451a0a | 939 | dpif_netlink_vport_init(&vport); |
df2c07f4 | 940 | vport.cmd = OVS_VPORT_CMD_DEL; |
254f2dc8 | 941 | vport.dp_ifindex = dpif->dp_ifindex; |
c19e6535 | 942 | vport.port_no = port_no; |
93451a0a | 943 | error = dpif_netlink_vport_transact(&vport, NULL, NULL); |
773cd538 | 944 | |
1579cf67 | 945 | vport_del_channels(dpif, port_no); |
989fd548 | 946 | |
773cd538 | 947 | return error; |
c3827f61 | 948 | } |
3abc4a1a | 949 | |
9fafa796 | 950 | static int |
93451a0a | 951 | dpif_netlink_port_del(struct dpif *dpif_, odp_port_t port_no) |
9fafa796 | 952 | { |
93451a0a | 953 | struct dpif_netlink *dpif = dpif_netlink_cast(dpif_); |
9fafa796 BP |
954 | int error; |
955 | ||
1579cf67 | 956 | fat_rwlock_wrlock(&dpif->upcall_lock); |
93451a0a | 957 | error = dpif_netlink_port_del__(dpif, port_no); |
1579cf67 | 958 | fat_rwlock_unlock(&dpif->upcall_lock); |
9fafa796 BP |
959 | |
960 | return error; | |
961 | } | |
962 | ||
c3827f61 | 963 | static int |
93451a0a AS |
964 | dpif_netlink_port_query__(const struct dpif_netlink *dpif, odp_port_t port_no, |
965 | const char *port_name, struct dpif_port *dpif_port) | |
c3827f61 | 966 | { |
93451a0a AS |
967 | struct dpif_netlink_vport request; |
968 | struct dpif_netlink_vport reply; | |
c19e6535 | 969 | struct ofpbuf *buf; |
4c738a8d BP |
970 | int error; |
971 | ||
93451a0a | 972 | dpif_netlink_vport_init(&request); |
df2c07f4 | 973 | request.cmd = OVS_VPORT_CMD_GET; |
9b00386b | 974 | request.dp_ifindex = dpif->dp_ifindex; |
c19e6535 BP |
975 | request.port_no = port_no; |
976 | request.name = port_name; | |
4c738a8d | 977 | |
93451a0a | 978 | error = dpif_netlink_vport_transact(&request, &reply, &buf); |
c19e6535 | 979 | if (!error) { |
33db1592 BP |
980 | if (reply.dp_ifindex != request.dp_ifindex) { |
981 | /* A query by name reported that 'port_name' is in some datapath | |
982 | * other than 'dpif', but the caller wants to know about 'dpif'. */ | |
983 | error = ENODEV; | |
4afba28d | 984 | } else if (dpif_port) { |
33db1592 | 985 | dpif_port->name = xstrdup(reply.name); |
b9ad7294 | 986 | dpif_port->type = xstrdup(get_vport_type(&reply)); |
33db1592 BP |
987 | dpif_port->port_no = reply.port_no; |
988 | } | |
c19e6535 | 989 | ofpbuf_delete(buf); |
3abc4a1a | 990 | } |
c19e6535 | 991 | return error; |
96fba48f BP |
992 | } |
993 | ||
994 | static int | |
93451a0a AS |
995 | dpif_netlink_port_query_by_number(const struct dpif *dpif_, odp_port_t port_no, |
996 | struct dpif_port *dpif_port) | |
96fba48f | 997 | { |
93451a0a | 998 | struct dpif_netlink *dpif = dpif_netlink_cast(dpif_); |
9b00386b | 999 | |
93451a0a | 1000 | return dpif_netlink_port_query__(dpif, port_no, NULL, dpif_port); |
96fba48f BP |
1001 | } |
1002 | ||
1003 | static int | |
93451a0a | 1004 | dpif_netlink_port_query_by_name(const struct dpif *dpif_, const char *devname, |
4c738a8d | 1005 | struct dpif_port *dpif_port) |
96fba48f | 1006 | { |
93451a0a | 1007 | struct dpif_netlink *dpif = dpif_netlink_cast(dpif_); |
9b00386b | 1008 | |
93451a0a | 1009 | return dpif_netlink_port_query__(dpif, 0, devname, dpif_port); |
96fba48f BP |
1010 | } |
1011 | ||
98403001 | 1012 | static uint32_t |
93451a0a AS |
1013 | dpif_netlink_port_get_pid__(const struct dpif_netlink *dpif, |
1014 | odp_port_t port_no, uint32_t hash) | |
b90de034 | 1015 | OVS_REQ_RDLOCK(dpif->upcall_lock) |
98403001 | 1016 | { |
4e022ec0 | 1017 | uint32_t port_idx = odp_to_u32(port_no); |
9fafa796 | 1018 | uint32_t pid = 0; |
98403001 | 1019 | |
f8fc5489 | 1020 | if (dpif->handlers && dpif->uc_array_size > 0) { |
4e022ec0 | 1021 | /* The ODPP_NONE "reserved" port number uses the "ovs-system"'s |
989fd548 | 1022 | * channel, since it is not heavily loaded. */ |
4e022ec0 | 1023 | uint32_t idx = port_idx >= dpif->uc_array_size ? 0 : port_idx; |
1579cf67 AW |
1024 | struct dpif_handler *h = &dpif->handlers[hash % dpif->n_handlers]; |
1025 | ||
17f2748d AW |
1026 | /* Needs to check in case the socket pointer is changed in between |
1027 | * the holding of upcall_lock. A known case happens when the main | |
1028 | * thread deletes the vport while the handler thread is handling | |
1029 | * the upcall from that port. */ | |
1030 | if (h->channels[idx].sock) { | |
1031 | pid = nl_sock_pid(h->channels[idx].sock); | |
1032 | } | |
98403001 | 1033 | } |
9fafa796 BP |
1034 | |
1035 | return pid; | |
98403001 BP |
1036 | } |
1037 | ||
b90de034 | 1038 | static uint32_t |
93451a0a AS |
1039 | dpif_netlink_port_get_pid(const struct dpif *dpif_, odp_port_t port_no, |
1040 | uint32_t hash) | |
b90de034 | 1041 | { |
93451a0a | 1042 | const struct dpif_netlink *dpif = dpif_netlink_cast(dpif_); |
b90de034 AW |
1043 | uint32_t ret; |
1044 | ||
1045 | fat_rwlock_rdlock(&dpif->upcall_lock); | |
93451a0a | 1046 | ret = dpif_netlink_port_get_pid__(dpif, port_no, hash); |
b90de034 AW |
1047 | fat_rwlock_unlock(&dpif->upcall_lock); |
1048 | ||
1049 | return ret; | |
1050 | } | |
1051 | ||
96fba48f | 1052 | static int |
93451a0a | 1053 | dpif_netlink_flow_flush(struct dpif *dpif_) |
96fba48f | 1054 | { |
93451a0a AS |
1055 | const struct dpif_netlink *dpif = dpif_netlink_cast(dpif_); |
1056 | struct dpif_netlink_flow flow; | |
37a1300c | 1057 | |
93451a0a | 1058 | dpif_netlink_flow_init(&flow); |
df2c07f4 | 1059 | flow.cmd = OVS_FLOW_CMD_DEL; |
254f2dc8 | 1060 | flow.dp_ifindex = dpif->dp_ifindex; |
93451a0a | 1061 | return dpif_netlink_flow_transact(&flow, NULL, NULL); |
96fba48f BP |
1062 | } |
1063 | ||
93451a0a | 1064 | struct dpif_netlink_port_state { |
f0fef760 | 1065 | struct nl_dump dump; |
d57695d7 | 1066 | struct ofpbuf buf; |
c19e6535 BP |
1067 | }; |
1068 | ||
222837c4 | 1069 | static void |
93451a0a AS |
1070 | dpif_netlink_port_dump_start__(const struct dpif_netlink *dpif, |
1071 | struct nl_dump *dump) | |
96fba48f | 1072 | { |
93451a0a | 1073 | struct dpif_netlink_vport request; |
f0fef760 BP |
1074 | struct ofpbuf *buf; |
1075 | ||
93451a0a | 1076 | dpif_netlink_vport_init(&request); |
067f1e23 | 1077 | request.cmd = OVS_VPORT_CMD_GET; |
254f2dc8 | 1078 | request.dp_ifindex = dpif->dp_ifindex; |
f0fef760 BP |
1079 | |
1080 | buf = ofpbuf_new(1024); | |
93451a0a | 1081 | dpif_netlink_vport_to_ofpbuf(&request, buf); |
222837c4 | 1082 | nl_dump_start(dump, NETLINK_GENERIC, buf); |
f0fef760 | 1083 | ofpbuf_delete(buf); |
222837c4 BP |
1084 | } |
1085 | ||
1086 | static int | |
93451a0a | 1087 | dpif_netlink_port_dump_start(const struct dpif *dpif_, void **statep) |
222837c4 | 1088 | { |
93451a0a AS |
1089 | struct dpif_netlink *dpif = dpif_netlink_cast(dpif_); |
1090 | struct dpif_netlink_port_state *state; | |
222837c4 BP |
1091 | |
1092 | *statep = state = xmalloc(sizeof *state); | |
93451a0a | 1093 | dpif_netlink_port_dump_start__(dpif, &state->dump); |
f0fef760 | 1094 | |
d57695d7 | 1095 | ofpbuf_init(&state->buf, NL_DUMP_BUFSIZE); |
b0ec0f27 BP |
1096 | return 0; |
1097 | } | |
1098 | ||
7c1ef244 | 1099 | static int |
93451a0a AS |
1100 | dpif_netlink_port_dump_next__(const struct dpif_netlink *dpif, |
1101 | struct nl_dump *dump, | |
1102 | struct dpif_netlink_vport *vport, | |
1103 | struct ofpbuf *buffer) | |
222837c4 | 1104 | { |
222837c4 BP |
1105 | struct ofpbuf buf; |
1106 | int error; | |
1107 | ||
d57695d7 | 1108 | if (!nl_dump_next(dump, &buf, buffer)) { |
222837c4 BP |
1109 | return EOF; |
1110 | } | |
1111 | ||
93451a0a | 1112 | error = dpif_netlink_vport_from_ofpbuf(vport, &buf); |
222837c4 BP |
1113 | if (error) { |
1114 | VLOG_WARN_RL(&error_rl, "%s: failed to parse vport record (%s)", | |
1115 | dpif_name(&dpif->dpif), ovs_strerror(error)); | |
1116 | } | |
1117 | return error; | |
1118 | } | |
1119 | ||
b0ec0f27 | 1120 | static int |
93451a0a AS |
1121 | dpif_netlink_port_dump_next(const struct dpif *dpif_, void *state_, |
1122 | struct dpif_port *dpif_port) | |
b0ec0f27 | 1123 | { |
93451a0a AS |
1124 | struct dpif_netlink *dpif = dpif_netlink_cast(dpif_); |
1125 | struct dpif_netlink_port_state *state = state_; | |
1126 | struct dpif_netlink_vport vport; | |
96fba48f BP |
1127 | int error; |
1128 | ||
93451a0a AS |
1129 | error = dpif_netlink_port_dump_next__(dpif, &state->dump, &vport, |
1130 | &state->buf); | |
c3827f61 | 1131 | if (error) { |
f0fef760 | 1132 | return error; |
c3827f61 | 1133 | } |
ebc56baa | 1134 | dpif_port->name = CONST_CAST(char *, vport.name); |
b9ad7294 | 1135 | dpif_port->type = CONST_CAST(char *, get_vport_type(&vport)); |
f0fef760 BP |
1136 | dpif_port->port_no = vport.port_no; |
1137 | return 0; | |
b0ec0f27 BP |
1138 | } |
1139 | ||
1140 | static int | |
93451a0a | 1141 | dpif_netlink_port_dump_done(const struct dpif *dpif_ OVS_UNUSED, void *state_) |
b0ec0f27 | 1142 | { |
93451a0a | 1143 | struct dpif_netlink_port_state *state = state_; |
f0fef760 | 1144 | int error = nl_dump_done(&state->dump); |
8522b383 | 1145 | |
d57695d7 | 1146 | ofpbuf_uninit(&state->buf); |
b0ec0f27 | 1147 | free(state); |
f0fef760 | 1148 | return error; |
96fba48f BP |
1149 | } |
1150 | ||
e9e28be3 | 1151 | static int |
93451a0a | 1152 | dpif_netlink_port_poll(const struct dpif *dpif_, char **devnamep) |
e9e28be3 | 1153 | { |
93451a0a | 1154 | struct dpif_netlink *dpif = dpif_netlink_cast(dpif_); |
e9e28be3 | 1155 | |
e4516b20 BP |
1156 | /* Lazily create the Netlink socket to listen for notifications. */ |
1157 | if (!dpif->port_notifier) { | |
1158 | struct nl_sock *sock; | |
1159 | int error; | |
1160 | ||
1161 | error = nl_sock_create(NETLINK_GENERIC, &sock); | |
1162 | if (error) { | |
1163 | return error; | |
1164 | } | |
1165 | ||
1166 | error = nl_sock_join_mcgroup(sock, ovs_vport_mcgroup); | |
1167 | if (error) { | |
1168 | nl_sock_destroy(sock); | |
1169 | return error; | |
1170 | } | |
1171 | dpif->port_notifier = sock; | |
1172 | ||
1173 | /* We have no idea of the current state so report that everything | |
1174 | * changed. */ | |
1175 | return ENOBUFS; | |
1176 | } | |
1177 | ||
1178 | for (;;) { | |
1179 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
1180 | uint64_t buf_stub[4096 / 8]; | |
1181 | struct ofpbuf buf; | |
1182 | int error; | |
1183 | ||
1184 | ofpbuf_use_stub(&buf, buf_stub, sizeof buf_stub); | |
1185 | error = nl_sock_recv(dpif->port_notifier, &buf, false); | |
1186 | if (!error) { | |
93451a0a | 1187 | struct dpif_netlink_vport vport; |
e4516b20 | 1188 | |
93451a0a | 1189 | error = dpif_netlink_vport_from_ofpbuf(&vport, &buf); |
e4516b20 BP |
1190 | if (!error) { |
1191 | if (vport.dp_ifindex == dpif->dp_ifindex | |
1192 | && (vport.cmd == OVS_VPORT_CMD_NEW | |
1193 | || vport.cmd == OVS_VPORT_CMD_DEL | |
1194 | || vport.cmd == OVS_VPORT_CMD_SET)) { | |
1195 | VLOG_DBG("port_changed: dpif:%s vport:%s cmd:%"PRIu8, | |
1196 | dpif->dpif.full_name, vport.name, vport.cmd); | |
1579cf67 | 1197 | if (vport.cmd == OVS_VPORT_CMD_DEL && dpif->handlers) { |
61eae437 BP |
1198 | dpif->refresh_channels = true; |
1199 | } | |
e4516b20 | 1200 | *devnamep = xstrdup(vport.name); |
59e0c910 | 1201 | ofpbuf_uninit(&buf); |
e4516b20 | 1202 | return 0; |
e4516b20 BP |
1203 | } |
1204 | } | |
59e0c910 BP |
1205 | } else if (error != EAGAIN) { |
1206 | VLOG_WARN_RL(&rl, "error reading or parsing netlink (%s)", | |
1207 | ovs_strerror(error)); | |
1208 | nl_sock_drain(dpif->port_notifier); | |
1209 | error = ENOBUFS; | |
e4516b20 BP |
1210 | } |
1211 | ||
59e0c910 BP |
1212 | ofpbuf_uninit(&buf); |
1213 | if (error) { | |
1214 | return error; | |
1215 | } | |
e9e28be3 | 1216 | } |
e9e28be3 BP |
1217 | } |
1218 | ||
1219 | static void | |
93451a0a | 1220 | dpif_netlink_port_poll_wait(const struct dpif *dpif_) |
e9e28be3 | 1221 | { |
93451a0a | 1222 | const struct dpif_netlink *dpif = dpif_netlink_cast(dpif_); |
e4516b20 BP |
1223 | |
1224 | if (dpif->port_notifier) { | |
1225 | nl_sock_wait(dpif->port_notifier, POLLIN); | |
1226 | } else { | |
e9e28be3 | 1227 | poll_immediate_wake(); |
e9e28be3 BP |
1228 | } |
1229 | } | |
1230 | ||
6fe09f8c | 1231 | static void |
70e5ed6f JS |
1232 | dpif_netlink_flow_init_ufid(struct dpif_netlink_flow *request, |
1233 | const ovs_u128 *ufid, bool terse) | |
1234 | { | |
1235 | if (ufid) { | |
1236 | request->ufid = *ufid; | |
1237 | request->ufid_present = true; | |
1238 | } else { | |
1239 | request->ufid_present = false; | |
1240 | } | |
1241 | request->ufid_terse = terse; | |
1242 | } | |
1243 | ||
1244 | static void | |
1245 | dpif_netlink_init_flow_get__(const struct dpif_netlink *dpif, | |
1246 | const struct nlattr *key, size_t key_len, | |
1247 | const ovs_u128 *ufid, bool terse, | |
1248 | struct dpif_netlink_flow *request) | |
96fba48f | 1249 | { |
93451a0a | 1250 | dpif_netlink_flow_init(request); |
6fe09f8c JS |
1251 | request->cmd = OVS_FLOW_CMD_GET; |
1252 | request->dp_ifindex = dpif->dp_ifindex; | |
1253 | request->key = key; | |
1254 | request->key_len = key_len; | |
70e5ed6f JS |
1255 | dpif_netlink_flow_init_ufid(request, ufid, terse); |
1256 | } | |
1257 | ||
1258 | static void | |
1259 | dpif_netlink_init_flow_get(const struct dpif_netlink *dpif, | |
1260 | const struct dpif_flow_get *get, | |
1261 | struct dpif_netlink_flow *request) | |
1262 | { | |
1263 | dpif_netlink_init_flow_get__(dpif, get->key, get->key_len, get->ufid, | |
1264 | false, request); | |
30053024 BP |
1265 | } |
1266 | ||
1267 | static int | |
70e5ed6f JS |
1268 | dpif_netlink_flow_get__(const struct dpif_netlink *dpif, |
1269 | const struct nlattr *key, size_t key_len, | |
1270 | const ovs_u128 *ufid, bool terse, | |
1271 | struct dpif_netlink_flow *reply, struct ofpbuf **bufp) | |
30053024 | 1272 | { |
93451a0a | 1273 | struct dpif_netlink_flow request; |
30053024 | 1274 | |
70e5ed6f | 1275 | dpif_netlink_init_flow_get__(dpif, key, key_len, ufid, terse, &request); |
93451a0a | 1276 | return dpif_netlink_flow_transact(&request, reply, bufp); |
96fba48f BP |
1277 | } |
1278 | ||
70e5ed6f JS |
1279 | static int |
1280 | dpif_netlink_flow_get(const struct dpif_netlink *dpif, | |
1281 | const struct dpif_netlink_flow *flow, | |
1282 | struct dpif_netlink_flow *reply, struct ofpbuf **bufp) | |
1283 | { | |
1284 | return dpif_netlink_flow_get__(dpif, flow->key, flow->key_len, | |
1285 | flow->ufid_present ? &flow->ufid : NULL, | |
1286 | false, reply, bufp); | |
1287 | } | |
1288 | ||
6bc60024 | 1289 | static void |
93451a0a AS |
1290 | dpif_netlink_init_flow_put(struct dpif_netlink *dpif, |
1291 | const struct dpif_flow_put *put, | |
1292 | struct dpif_netlink_flow *request) | |
6bc60024 | 1293 | { |
d64e176c | 1294 | static const struct nlattr dummy_action; |
6bc60024 | 1295 | |
93451a0a | 1296 | dpif_netlink_flow_init(request); |
89625d1e | 1297 | request->cmd = (put->flags & DPIF_FP_CREATE |
6bc60024 BP |
1298 | ? OVS_FLOW_CMD_NEW : OVS_FLOW_CMD_SET); |
1299 | request->dp_ifindex = dpif->dp_ifindex; | |
89625d1e BP |
1300 | request->key = put->key; |
1301 | request->key_len = put->key_len; | |
e6cc0bab AZ |
1302 | request->mask = put->mask; |
1303 | request->mask_len = put->mask_len; | |
70e5ed6f JS |
1304 | dpif_netlink_flow_init_ufid(request, put->ufid, false); |
1305 | ||
6bc60024 | 1306 | /* Ensure that OVS_FLOW_ATTR_ACTIONS will always be included. */ |
d64e176c BP |
1307 | request->actions = (put->actions |
1308 | ? put->actions | |
1309 | : CONST_CAST(struct nlattr *, &dummy_action)); | |
89625d1e BP |
1310 | request->actions_len = put->actions_len; |
1311 | if (put->flags & DPIF_FP_ZERO_STATS) { | |
6bc60024 BP |
1312 | request->clear = true; |
1313 | } | |
43f9ac0a JR |
1314 | if (put->flags & DPIF_FP_PROBE) { |
1315 | request->probe = true; | |
1316 | } | |
89625d1e | 1317 | request->nlmsg_flags = put->flags & DPIF_FP_MODIFY ? 0 : NLM_F_CREATE; |
6bc60024 BP |
1318 | } |
1319 | ||
b99d3cee | 1320 | static void |
70e5ed6f JS |
1321 | dpif_netlink_init_flow_del__(struct dpif_netlink *dpif, |
1322 | const struct nlattr *key, size_t key_len, | |
1323 | const ovs_u128 *ufid, bool terse, | |
1324 | struct dpif_netlink_flow *request) | |
96fba48f | 1325 | { |
93451a0a | 1326 | dpif_netlink_flow_init(request); |
b99d3cee BP |
1327 | request->cmd = OVS_FLOW_CMD_DEL; |
1328 | request->dp_ifindex = dpif->dp_ifindex; | |
70e5ed6f JS |
1329 | request->key = key; |
1330 | request->key_len = key_len; | |
1331 | dpif_netlink_flow_init_ufid(request, ufid, terse); | |
1332 | } | |
1333 | ||
1334 | static void | |
1335 | dpif_netlink_init_flow_del(struct dpif_netlink *dpif, | |
1336 | const struct dpif_flow_del *del, | |
1337 | struct dpif_netlink_flow *request) | |
1338 | { | |
37382aa6 AS |
1339 | dpif_netlink_init_flow_del__(dpif, del->key, del->key_len, |
1340 | del->ufid, del->terse, request); | |
70e5ed6f JS |
1341 | } |
1342 | ||
93451a0a | 1343 | struct dpif_netlink_flow_dump { |
ac64794a BP |
1344 | struct dpif_flow_dump up; |
1345 | struct nl_dump nl_dump; | |
d2ad7ef1 | 1346 | atomic_int status; |
e723fd32 JS |
1347 | }; |
1348 | ||
93451a0a AS |
1349 | static struct dpif_netlink_flow_dump * |
1350 | dpif_netlink_flow_dump_cast(struct dpif_flow_dump *dump) | |
e723fd32 | 1351 | { |
93451a0a | 1352 | return CONTAINER_OF(dump, struct dpif_netlink_flow_dump, up); |
e723fd32 JS |
1353 | } |
1354 | ||
ac64794a | 1355 | static struct dpif_flow_dump * |
64bb477f | 1356 | dpif_netlink_flow_dump_create(const struct dpif *dpif_, bool terse) |
96fba48f | 1357 | { |
93451a0a AS |
1358 | const struct dpif_netlink *dpif = dpif_netlink_cast(dpif_); |
1359 | struct dpif_netlink_flow_dump *dump; | |
1360 | struct dpif_netlink_flow request; | |
37a1300c BP |
1361 | struct ofpbuf *buf; |
1362 | ||
ac64794a BP |
1363 | dump = xmalloc(sizeof *dump); |
1364 | dpif_flow_dump_init(&dump->up, dpif_); | |
37a1300c | 1365 | |
93451a0a | 1366 | dpif_netlink_flow_init(&request); |
067f1e23 | 1367 | request.cmd = OVS_FLOW_CMD_GET; |
254f2dc8 | 1368 | request.dp_ifindex = dpif->dp_ifindex; |
64bb477f JS |
1369 | request.ufid_present = false; |
1370 | request.ufid_terse = terse; | |
37a1300c BP |
1371 | |
1372 | buf = ofpbuf_new(1024); | |
93451a0a | 1373 | dpif_netlink_flow_to_ofpbuf(&request, buf); |
ac64794a | 1374 | nl_dump_start(&dump->nl_dump, NETLINK_GENERIC, buf); |
37a1300c | 1375 | ofpbuf_delete(buf); |
ac64794a | 1376 | atomic_init(&dump->status, 0); |
64bb477f | 1377 | dump->up.terse = terse; |
30053024 | 1378 | |
ac64794a | 1379 | return &dump->up; |
704a1e09 BP |
1380 | } |
1381 | ||
1382 | static int | |
93451a0a | 1383 | dpif_netlink_flow_dump_destroy(struct dpif_flow_dump *dump_) |
704a1e09 | 1384 | { |
93451a0a | 1385 | struct dpif_netlink_flow_dump *dump = dpif_netlink_flow_dump_cast(dump_); |
ac64794a BP |
1386 | unsigned int nl_status = nl_dump_done(&dump->nl_dump); |
1387 | int dump_status; | |
96fba48f | 1388 | |
7424fc44 JR |
1389 | /* No other thread has access to 'dump' at this point. */ |
1390 | atomic_read_relaxed(&dump->status, &dump_status); | |
ac64794a BP |
1391 | free(dump); |
1392 | return dump_status ? dump_status : nl_status; | |
1393 | } | |
feebdea2 | 1394 | |
93451a0a | 1395 | struct dpif_netlink_flow_dump_thread { |
ac64794a | 1396 | struct dpif_flow_dump_thread up; |
93451a0a AS |
1397 | struct dpif_netlink_flow_dump *dump; |
1398 | struct dpif_netlink_flow flow; | |
ac64794a BP |
1399 | struct dpif_flow_stats stats; |
1400 | struct ofpbuf nl_flows; /* Always used to store flows. */ | |
1401 | struct ofpbuf *nl_actions; /* Used if kernel does not supply actions. */ | |
1402 | }; | |
1403 | ||
93451a0a AS |
1404 | static struct dpif_netlink_flow_dump_thread * |
1405 | dpif_netlink_flow_dump_thread_cast(struct dpif_flow_dump_thread *thread) | |
ac64794a | 1406 | { |
93451a0a | 1407 | return CONTAINER_OF(thread, struct dpif_netlink_flow_dump_thread, up); |
ac64794a BP |
1408 | } |
1409 | ||
1410 | static struct dpif_flow_dump_thread * | |
93451a0a | 1411 | dpif_netlink_flow_dump_thread_create(struct dpif_flow_dump *dump_) |
ac64794a | 1412 | { |
93451a0a AS |
1413 | struct dpif_netlink_flow_dump *dump = dpif_netlink_flow_dump_cast(dump_); |
1414 | struct dpif_netlink_flow_dump_thread *thread; | |
ac64794a BP |
1415 | |
1416 | thread = xmalloc(sizeof *thread); | |
1417 | dpif_flow_dump_thread_init(&thread->up, &dump->up); | |
1418 | thread->dump = dump; | |
1419 | ofpbuf_init(&thread->nl_flows, NL_DUMP_BUFSIZE); | |
1420 | thread->nl_actions = NULL; | |
1421 | ||
1422 | return &thread->up; | |
1423 | } | |
1424 | ||
1425 | static void | |
93451a0a | 1426 | dpif_netlink_flow_dump_thread_destroy(struct dpif_flow_dump_thread *thread_) |
ac64794a | 1427 | { |
93451a0a AS |
1428 | struct dpif_netlink_flow_dump_thread *thread |
1429 | = dpif_netlink_flow_dump_thread_cast(thread_); | |
ac64794a BP |
1430 | |
1431 | ofpbuf_uninit(&thread->nl_flows); | |
1432 | ofpbuf_delete(thread->nl_actions); | |
1433 | free(thread); | |
1434 | } | |
1435 | ||
1436 | static void | |
7af12bd7 | 1437 | dpif_netlink_flow_to_dpif_flow(struct dpif *dpif, struct dpif_flow *dpif_flow, |
7fe98598 | 1438 | const struct dpif_netlink_flow *datapath_flow) |
ac64794a | 1439 | { |
7fe98598 NR |
1440 | dpif_flow->key = datapath_flow->key; |
1441 | dpif_flow->key_len = datapath_flow->key_len; | |
1442 | dpif_flow->mask = datapath_flow->mask; | |
1443 | dpif_flow->mask_len = datapath_flow->mask_len; | |
1444 | dpif_flow->actions = datapath_flow->actions; | |
1445 | dpif_flow->actions_len = datapath_flow->actions_len; | |
70e5ed6f | 1446 | dpif_flow->ufid_present = datapath_flow->ufid_present; |
ec97c2df | 1447 | dpif_flow->pmd_id = PMD_ID_NULL; |
70e5ed6f JS |
1448 | if (datapath_flow->ufid_present) { |
1449 | dpif_flow->ufid = datapath_flow->ufid; | |
1450 | } else { | |
1451 | ovs_assert(datapath_flow->key && datapath_flow->key_len); | |
1452 | dpif_flow_hash(dpif, datapath_flow->key, datapath_flow->key_len, | |
1453 | &dpif_flow->ufid); | |
1454 | } | |
7fe98598 | 1455 | dpif_netlink_flow_get_stats(datapath_flow, &dpif_flow->stats); |
ac64794a BP |
1456 | } |
1457 | ||
1458 | static int | |
93451a0a AS |
1459 | dpif_netlink_flow_dump_next(struct dpif_flow_dump_thread *thread_, |
1460 | struct dpif_flow *flows, int max_flows) | |
ac64794a | 1461 | { |
93451a0a AS |
1462 | struct dpif_netlink_flow_dump_thread *thread |
1463 | = dpif_netlink_flow_dump_thread_cast(thread_); | |
1464 | struct dpif_netlink_flow_dump *dump = thread->dump; | |
1465 | struct dpif_netlink *dpif = dpif_netlink_cast(thread->up.dpif); | |
ac64794a BP |
1466 | int n_flows; |
1467 | ||
1468 | ofpbuf_delete(thread->nl_actions); | |
1469 | thread->nl_actions = NULL; | |
1470 | ||
1471 | n_flows = 0; | |
1472 | while (!n_flows | |
6fd6ed71 | 1473 | || (n_flows < max_flows && thread->nl_flows.size)) { |
7fe98598 | 1474 | struct dpif_netlink_flow datapath_flow; |
ac64794a BP |
1475 | struct ofpbuf nl_flow; |
1476 | int error; | |
1477 | ||
1478 | /* Try to grab another flow. */ | |
1479 | if (!nl_dump_next(&dump->nl_dump, &nl_flow, &thread->nl_flows)) { | |
1480 | break; | |
feebdea2 | 1481 | } |
30053024 | 1482 | |
ac64794a | 1483 | /* Convert the flow to our output format. */ |
7fe98598 | 1484 | error = dpif_netlink_flow_from_ofpbuf(&datapath_flow, &nl_flow); |
30053024 | 1485 | if (error) { |
7424fc44 | 1486 | atomic_store_relaxed(&dump->status, error); |
ac64794a | 1487 | break; |
feebdea2 | 1488 | } |
30053024 | 1489 | |
64bb477f JS |
1490 | if (dump->up.terse || datapath_flow.actions) { |
1491 | /* Common case: we don't want actions, or the flow includes | |
1492 | * actions. */ | |
7af12bd7 JS |
1493 | dpif_netlink_flow_to_dpif_flow(&dpif->dpif, &flows[n_flows++], |
1494 | &datapath_flow); | |
ac64794a BP |
1495 | } else { |
1496 | /* Rare case: the flow does not include actions. Retrieve this | |
1497 | * individual flow again to get the actions. */ | |
70e5ed6f | 1498 | error = dpif_netlink_flow_get(dpif, &datapath_flow, |
7fe98598 | 1499 | &datapath_flow, &thread->nl_actions); |
30053024 BP |
1500 | if (error == ENOENT) { |
1501 | VLOG_DBG("dumped flow disappeared on get"); | |
ac64794a | 1502 | continue; |
30053024 | 1503 | } else if (error) { |
10a89ef0 BP |
1504 | VLOG_WARN("error fetching dumped flow: %s", |
1505 | ovs_strerror(error)); | |
7424fc44 | 1506 | atomic_store_relaxed(&dump->status, error); |
ac64794a | 1507 | break; |
30053024 | 1508 | } |
30053024 | 1509 | |
ac64794a BP |
1510 | /* Save this flow. Then exit, because we only have one buffer to |
1511 | * handle this case. */ | |
7af12bd7 JS |
1512 | dpif_netlink_flow_to_dpif_flow(&dpif->dpif, &flows[n_flows++], |
1513 | &datapath_flow); | |
ac64794a BP |
1514 | break; |
1515 | } | |
feebdea2 | 1516 | } |
ac64794a | 1517 | return n_flows; |
96fba48f BP |
1518 | } |
1519 | ||
eabe7c68 | 1520 | static void |
93451a0a AS |
1521 | dpif_netlink_encode_execute(int dp_ifindex, const struct dpif_execute *d_exec, |
1522 | struct ofpbuf *buf) | |
96fba48f | 1523 | { |
89625d1e | 1524 | struct ovs_header *k_exec; |
758c456d | 1525 | size_t key_ofs; |
f7cd0081 | 1526 | |
eabe7c68 | 1527 | ofpbuf_prealloc_tailroom(buf, (64 |
cf62fa4c | 1528 | + dp_packet_size(d_exec->packet) |
758c456d | 1529 | + ODP_KEY_METADATA_SIZE |
eabe7c68 | 1530 | + d_exec->actions_len)); |
f7cd0081 | 1531 | |
df2c07f4 | 1532 | nl_msg_put_genlmsghdr(buf, 0, ovs_packet_family, NLM_F_REQUEST, |
69685a88 | 1533 | OVS_PACKET_CMD_EXECUTE, OVS_PACKET_VERSION); |
f7cd0081 | 1534 | |
89625d1e BP |
1535 | k_exec = ofpbuf_put_uninit(buf, sizeof *k_exec); |
1536 | k_exec->dp_ifindex = dp_ifindex; | |
f7cd0081 | 1537 | |
89625d1e | 1538 | nl_msg_put_unspec(buf, OVS_PACKET_ATTR_PACKET, |
cf62fa4c PS |
1539 | dp_packet_data(d_exec->packet), |
1540 | dp_packet_size(d_exec->packet)); | |
758c456d JR |
1541 | |
1542 | key_ofs = nl_msg_start_nested(buf, OVS_PACKET_ATTR_KEY); | |
cf62fa4c | 1543 | odp_key_from_pkt_metadata(buf, &d_exec->packet->md); |
758c456d JR |
1544 | nl_msg_end_nested(buf, key_ofs); |
1545 | ||
89625d1e BP |
1546 | nl_msg_put_unspec(buf, OVS_PACKET_ATTR_ACTIONS, |
1547 | d_exec->actions, d_exec->actions_len); | |
43f9ac0a | 1548 | if (d_exec->probe) { |
2e460098 | 1549 | nl_msg_put_flag(buf, OVS_PACKET_ATTR_PROBE); |
43f9ac0a | 1550 | } |
27130224 AZ |
1551 | if (d_exec->mtu) { |
1552 | nl_msg_put_u16(buf, OVS_PACKET_ATTR_MRU, d_exec->mtu); | |
1553 | } | |
6bc60024 BP |
1554 | } |
1555 | ||
0f3358ea BP |
1556 | /* Executes, against 'dpif', up to the first 'n_ops' operations in 'ops'. |
1557 | * Returns the number actually executed (at least 1, if 'n_ops' is | |
1558 | * positive). */ | |
1559 | static size_t | |
93451a0a AS |
1560 | dpif_netlink_operate__(struct dpif_netlink *dpif, |
1561 | struct dpif_op **ops, size_t n_ops) | |
6bc60024 | 1562 | { |
0f3358ea BP |
1563 | enum { MAX_OPS = 50 }; |
1564 | ||
eabe7c68 BP |
1565 | struct op_auxdata { |
1566 | struct nl_transaction txn; | |
72d32ac0 | 1567 | |
eabe7c68 BP |
1568 | struct ofpbuf request; |
1569 | uint64_t request_stub[1024 / 8]; | |
72d32ac0 BP |
1570 | |
1571 | struct ofpbuf reply; | |
1572 | uint64_t reply_stub[1024 / 8]; | |
eabe7c68 BP |
1573 | } auxes[MAX_OPS]; |
1574 | ||
1575 | struct nl_transaction *txnsp[MAX_OPS]; | |
6bc60024 BP |
1576 | size_t i; |
1577 | ||
0f3358ea | 1578 | n_ops = MIN(n_ops, MAX_OPS); |
6bc60024 | 1579 | for (i = 0; i < n_ops; i++) { |
eabe7c68 | 1580 | struct op_auxdata *aux = &auxes[i]; |
c2b565b5 | 1581 | struct dpif_op *op = ops[i]; |
b99d3cee BP |
1582 | struct dpif_flow_put *put; |
1583 | struct dpif_flow_del *del; | |
6fe09f8c | 1584 | struct dpif_flow_get *get; |
93451a0a | 1585 | struct dpif_netlink_flow flow; |
eabe7c68 BP |
1586 | |
1587 | ofpbuf_use_stub(&aux->request, | |
1588 | aux->request_stub, sizeof aux->request_stub); | |
1589 | aux->txn.request = &aux->request; | |
b99d3cee | 1590 | |
72d32ac0 BP |
1591 | ofpbuf_use_stub(&aux->reply, aux->reply_stub, sizeof aux->reply_stub); |
1592 | aux->txn.reply = NULL; | |
1593 | ||
b99d3cee BP |
1594 | switch (op->type) { |
1595 | case DPIF_OP_FLOW_PUT: | |
1596 | put = &op->u.flow_put; | |
93451a0a | 1597 | dpif_netlink_init_flow_put(dpif, put, &flow); |
6bc60024 | 1598 | if (put->stats) { |
eabe7c68 | 1599 | flow.nlmsg_flags |= NLM_F_ECHO; |
72d32ac0 | 1600 | aux->txn.reply = &aux->reply; |
6bc60024 | 1601 | } |
93451a0a | 1602 | dpif_netlink_flow_to_ofpbuf(&flow, &aux->request); |
b99d3cee BP |
1603 | break; |
1604 | ||
1605 | case DPIF_OP_FLOW_DEL: | |
1606 | del = &op->u.flow_del; | |
93451a0a | 1607 | dpif_netlink_init_flow_del(dpif, del, &flow); |
b99d3cee | 1608 | if (del->stats) { |
eabe7c68 | 1609 | flow.nlmsg_flags |= NLM_F_ECHO; |
72d32ac0 | 1610 | aux->txn.reply = &aux->reply; |
b99d3cee | 1611 | } |
93451a0a | 1612 | dpif_netlink_flow_to_ofpbuf(&flow, &aux->request); |
b99d3cee | 1613 | break; |
6bc60024 | 1614 | |
b99d3cee | 1615 | case DPIF_OP_EXECUTE: |
0f3358ea BP |
1616 | /* Can't execute a packet that won't fit in a Netlink attribute. */ |
1617 | if (OVS_UNLIKELY(nl_attr_oversized( | |
cf62fa4c | 1618 | dp_packet_size(op->u.execute.packet)))) { |
0f3358ea BP |
1619 | /* Report an error immediately if this is the first operation. |
1620 | * Otherwise the easiest thing to do is to postpone to the next | |
1621 | * call (when this will be the first operation). */ | |
1622 | if (i == 0) { | |
1623 | VLOG_ERR_RL(&error_rl, | |
1624 | "dropping oversized %"PRIu32"-byte packet", | |
cf62fa4c | 1625 | dp_packet_size(op->u.execute.packet)); |
0f3358ea BP |
1626 | op->error = ENOBUFS; |
1627 | return 1; | |
1628 | } | |
1629 | n_ops = i; | |
1630 | } else { | |
1631 | dpif_netlink_encode_execute(dpif->dp_ifindex, &op->u.execute, | |
1632 | &aux->request); | |
1633 | } | |
b99d3cee BP |
1634 | break; |
1635 | ||
6fe09f8c JS |
1636 | case DPIF_OP_FLOW_GET: |
1637 | get = &op->u.flow_get; | |
70e5ed6f | 1638 | dpif_netlink_init_flow_get(dpif, get, &flow); |
6fe09f8c | 1639 | aux->txn.reply = get->buffer; |
93451a0a | 1640 | dpif_netlink_flow_to_ofpbuf(&flow, &aux->request); |
6fe09f8c JS |
1641 | break; |
1642 | ||
b99d3cee | 1643 | default: |
428b2edd | 1644 | OVS_NOT_REACHED(); |
6bc60024 BP |
1645 | } |
1646 | } | |
1647 | ||
6bc60024 | 1648 | for (i = 0; i < n_ops; i++) { |
eabe7c68 | 1649 | txnsp[i] = &auxes[i].txn; |
6bc60024 | 1650 | } |
a88b4e04 | 1651 | nl_transact_multiple(NETLINK_GENERIC, txnsp, n_ops); |
6bc60024 | 1652 | |
6bc60024 | 1653 | for (i = 0; i < n_ops; i++) { |
72d32ac0 | 1654 | struct op_auxdata *aux = &auxes[i]; |
eabe7c68 | 1655 | struct nl_transaction *txn = &auxes[i].txn; |
c2b565b5 | 1656 | struct dpif_op *op = ops[i]; |
b99d3cee BP |
1657 | struct dpif_flow_put *put; |
1658 | struct dpif_flow_del *del; | |
6fe09f8c | 1659 | struct dpif_flow_get *get; |
6bc60024 | 1660 | |
b99d3cee | 1661 | op->error = txn->error; |
6bc60024 | 1662 | |
b99d3cee BP |
1663 | switch (op->type) { |
1664 | case DPIF_OP_FLOW_PUT: | |
1665 | put = &op->u.flow_put; | |
cfceb2b5 | 1666 | if (put->stats) { |
b99d3cee | 1667 | if (!op->error) { |
93451a0a | 1668 | struct dpif_netlink_flow reply; |
cfceb2b5 | 1669 | |
93451a0a AS |
1670 | op->error = dpif_netlink_flow_from_ofpbuf(&reply, |
1671 | txn->reply); | |
cfceb2b5 | 1672 | if (!op->error) { |
93451a0a | 1673 | dpif_netlink_flow_get_stats(&reply, put->stats); |
cfceb2b5 BP |
1674 | } |
1675 | } | |
6bc60024 | 1676 | } |
b99d3cee BP |
1677 | break; |
1678 | ||
1679 | case DPIF_OP_FLOW_DEL: | |
1680 | del = &op->u.flow_del; | |
cfceb2b5 | 1681 | if (del->stats) { |
b99d3cee | 1682 | if (!op->error) { |
93451a0a | 1683 | struct dpif_netlink_flow reply; |
cfceb2b5 | 1684 | |
93451a0a AS |
1685 | op->error = dpif_netlink_flow_from_ofpbuf(&reply, |
1686 | txn->reply); | |
cfceb2b5 | 1687 | if (!op->error) { |
93451a0a | 1688 | dpif_netlink_flow_get_stats(&reply, del->stats); |
cfceb2b5 BP |
1689 | } |
1690 | } | |
b99d3cee BP |
1691 | } |
1692 | break; | |
1693 | ||
1694 | case DPIF_OP_EXECUTE: | |
1695 | break; | |
1696 | ||
6fe09f8c JS |
1697 | case DPIF_OP_FLOW_GET: |
1698 | get = &op->u.flow_get; | |
1699 | if (!op->error) { | |
93451a0a | 1700 | struct dpif_netlink_flow reply; |
6fe09f8c | 1701 | |
93451a0a | 1702 | op->error = dpif_netlink_flow_from_ofpbuf(&reply, txn->reply); |
6fe09f8c | 1703 | if (!op->error) { |
7af12bd7 JS |
1704 | dpif_netlink_flow_to_dpif_flow(&dpif->dpif, get->flow, |
1705 | &reply); | |
6fe09f8c JS |
1706 | } |
1707 | } | |
1708 | break; | |
1709 | ||
b99d3cee | 1710 | default: |
428b2edd | 1711 | OVS_NOT_REACHED(); |
6bc60024 BP |
1712 | } |
1713 | ||
72d32ac0 BP |
1714 | ofpbuf_uninit(&aux->request); |
1715 | ofpbuf_uninit(&aux->reply); | |
6bc60024 | 1716 | } |
0f3358ea BP |
1717 | |
1718 | return n_ops; | |
eabe7c68 BP |
1719 | } |
1720 | ||
1721 | static void | |
93451a0a | 1722 | dpif_netlink_operate(struct dpif *dpif_, struct dpif_op **ops, size_t n_ops) |
eabe7c68 | 1723 | { |
93451a0a | 1724 | struct dpif_netlink *dpif = dpif_netlink_cast(dpif_); |
9b00386b | 1725 | |
eabe7c68 | 1726 | while (n_ops > 0) { |
0f3358ea | 1727 | size_t chunk = dpif_netlink_operate__(dpif, ops, n_ops); |
eabe7c68 BP |
1728 | ops += chunk; |
1729 | n_ops -= chunk; | |
1730 | } | |
6bc60024 BP |
1731 | } |
1732 | ||
09cac43f NR |
1733 | #if _WIN32 |
1734 | static void | |
1735 | dpif_netlink_handler_uninit(struct dpif_handler *handler) | |
1736 | { | |
1737 | vport_delete_sock_pool(handler); | |
1738 | } | |
1739 | ||
1740 | static int | |
1741 | dpif_netlink_handler_init(struct dpif_handler *handler) | |
1742 | { | |
1743 | return vport_create_sock_pool(handler); | |
1744 | } | |
1745 | #else | |
1746 | ||
1747 | static int | |
1748 | dpif_netlink_handler_init(struct dpif_handler *handler) | |
1749 | { | |
1750 | handler->epoll_fd = epoll_create(10); | |
1751 | return handler->epoll_fd < 0 ? errno : 0; | |
1752 | } | |
1753 | ||
1754 | static void | |
1755 | dpif_netlink_handler_uninit(struct dpif_handler *handler) | |
1756 | { | |
1757 | close(handler->epoll_fd); | |
1758 | } | |
1759 | #endif | |
1760 | ||
1579cf67 AW |
1761 | /* Synchronizes 'channels' in 'dpif->handlers' with the set of vports |
1762 | * currently in 'dpif' in the kernel, by adding a new set of channels for | |
1763 | * any kernel vport that lacks one and deleting any channels that have no | |
1764 | * backing kernel vports. */ | |
96fba48f | 1765 | static int |
93451a0a | 1766 | dpif_netlink_refresh_channels(struct dpif_netlink *dpif, uint32_t n_handlers) |
b90de034 | 1767 | OVS_REQ_WRLOCK(dpif->upcall_lock) |
96fba48f | 1768 | { |
8381a3d3 | 1769 | unsigned long int *keep_channels; |
93451a0a | 1770 | struct dpif_netlink_vport vport; |
8381a3d3 BP |
1771 | size_t keep_channels_nbits; |
1772 | struct nl_dump dump; | |
d57695d7 JS |
1773 | uint64_t reply_stub[NL_DUMP_BUFSIZE / 8]; |
1774 | struct ofpbuf buf; | |
8381a3d3 BP |
1775 | int retval = 0; |
1776 | size_t i; | |
982b8810 | 1777 | |
09cac43f NR |
1778 | ovs_assert(!WINDOWS || n_handlers <= 1); |
1779 | ovs_assert(!WINDOWS || dpif->n_handlers <= 1); | |
1780 | ||
1579cf67 AW |
1781 | if (dpif->n_handlers != n_handlers) { |
1782 | destroy_all_channels(dpif); | |
1783 | dpif->handlers = xzalloc(n_handlers * sizeof *dpif->handlers); | |
1784 | for (i = 0; i < n_handlers; i++) { | |
09cac43f | 1785 | int error; |
1579cf67 AW |
1786 | struct dpif_handler *handler = &dpif->handlers[i]; |
1787 | ||
09cac43f NR |
1788 | error = dpif_netlink_handler_init(handler); |
1789 | if (error) { | |
1579cf67 | 1790 | size_t j; |
09cac43f NR |
1791 | struct dpif_handler *tmp = &dpif->handlers[i]; |
1792 | ||
1579cf67 AW |
1793 | |
1794 | for (j = 0; j < i; j++) { | |
09cac43f | 1795 | dpif_netlink_handler_uninit(tmp); |
1579cf67 AW |
1796 | } |
1797 | free(dpif->handlers); | |
1798 | dpif->handlers = NULL; | |
1799 | ||
09cac43f | 1800 | return error; |
1579cf67 | 1801 | } |
8381a3d3 | 1802 | } |
1579cf67 AW |
1803 | dpif->n_handlers = n_handlers; |
1804 | } | |
1805 | ||
1806 | for (i = 0; i < n_handlers; i++) { | |
1807 | struct dpif_handler *handler = &dpif->handlers[i]; | |
1808 | ||
1809 | handler->event_offset = handler->n_events = 0; | |
17411ecf | 1810 | } |
b063d9f0 | 1811 | |
8381a3d3 BP |
1812 | keep_channels_nbits = dpif->uc_array_size; |
1813 | keep_channels = bitmap_allocate(keep_channels_nbits); | |
982b8810 | 1814 | |
d57695d7 | 1815 | ofpbuf_use_stub(&buf, reply_stub, sizeof reply_stub); |
93451a0a AS |
1816 | dpif_netlink_port_dump_start__(dpif, &dump); |
1817 | while (!dpif_netlink_port_dump_next__(dpif, &dump, &vport, &buf)) { | |
8381a3d3 | 1818 | uint32_t port_no = odp_to_u32(vport.port_no); |
1579cf67 | 1819 | uint32_t *upcall_pids = NULL; |
8381a3d3 | 1820 | int error; |
50f80534 | 1821 | |
1579cf67 AW |
1822 | if (port_no >= dpif->uc_array_size |
1823 | || !vport_get_pids(dpif, port_no, &upcall_pids)) { | |
09cac43f | 1824 | struct nl_sock **socksp = vport_create_socksp(dpif, &error); |
1579cf67 AW |
1825 | |
1826 | if (!socksp) { | |
1827 | goto error; | |
1828 | } | |
1829 | ||
1830 | error = vport_add_channels(dpif, vport.port_no, socksp); | |
b063d9f0 | 1831 | if (error) { |
1579cf67 | 1832 | VLOG_INFO("%s: could not add channels for port %s", |
9b00386b | 1833 | dpif_name(&dpif->dpif), vport.name); |
09cac43f | 1834 | vport_del_socksp(dpif, socksp); |
8381a3d3 BP |
1835 | retval = error; |
1836 | goto error; | |
982b8810 | 1837 | } |
1579cf67 AW |
1838 | upcall_pids = vport_socksp_to_pids(socksp, dpif->n_handlers); |
1839 | free(socksp); | |
8381a3d3 | 1840 | } |
50f80534 | 1841 | |
8381a3d3 | 1842 | /* Configure the vport to deliver misses to 'sock'. */ |
1579cf67 AW |
1843 | if (vport.upcall_pids[0] == 0 |
1844 | || vport.n_upcall_pids != dpif->n_handlers | |
1845 | || memcmp(upcall_pids, vport.upcall_pids, n_handlers * sizeof | |
1846 | *upcall_pids)) { | |
93451a0a | 1847 | struct dpif_netlink_vport vport_request; |
989fd548 | 1848 | |
93451a0a | 1849 | dpif_netlink_vport_init(&vport_request); |
989fd548 JP |
1850 | vport_request.cmd = OVS_VPORT_CMD_SET; |
1851 | vport_request.dp_ifindex = dpif->dp_ifindex; | |
8381a3d3 | 1852 | vport_request.port_no = vport.port_no; |
1579cf67 AW |
1853 | vport_request.n_upcall_pids = dpif->n_handlers; |
1854 | vport_request.upcall_pids = upcall_pids; | |
93451a0a | 1855 | error = dpif_netlink_vport_transact(&vport_request, NULL, NULL); |
1579cf67 | 1856 | if (error) { |
989fd548 JP |
1857 | VLOG_WARN_RL(&error_rl, |
1858 | "%s: failed to set upcall pid on port: %s", | |
10a89ef0 | 1859 | dpif_name(&dpif->dpif), ovs_strerror(error)); |
989fd548 | 1860 | |
8381a3d3 BP |
1861 | if (error != ENODEV && error != ENOENT) { |
1862 | retval = error; | |
989fd548 | 1863 | } else { |
8381a3d3 BP |
1864 | /* The vport isn't really there, even though the dump says |
1865 | * it is. Probably we just hit a race after a port | |
1866 | * disappeared. */ | |
989fd548 | 1867 | } |
8381a3d3 | 1868 | goto error; |
50f80534 | 1869 | } |
8381a3d3 | 1870 | } |
14b4d2f9 | 1871 | |
8381a3d3 BP |
1872 | if (port_no < keep_channels_nbits) { |
1873 | bitmap_set1(keep_channels, port_no); | |
1874 | } | |
1579cf67 | 1875 | free(upcall_pids); |
8381a3d3 BP |
1876 | continue; |
1877 | ||
1878 | error: | |
1579cf67 AW |
1879 | free(upcall_pids); |
1880 | vport_del_channels(dpif, vport.port_no); | |
982b8810 | 1881 | } |
8381a3d3 | 1882 | nl_dump_done(&dump); |
d57695d7 | 1883 | ofpbuf_uninit(&buf); |
b063d9f0 | 1884 | |
8381a3d3 BP |
1885 | /* Discard any saved channels that we didn't reuse. */ |
1886 | for (i = 0; i < keep_channels_nbits; i++) { | |
1887 | if (!bitmap_is_set(keep_channels, i)) { | |
1579cf67 | 1888 | vport_del_channels(dpif, u32_to_odp(i)); |
8381a3d3 BP |
1889 | } |
1890 | } | |
1891 | free(keep_channels); | |
1892 | ||
1893 | return retval; | |
1894 | } | |
1895 | ||
1896 | static int | |
93451a0a | 1897 | dpif_netlink_recv_set__(struct dpif_netlink *dpif, bool enable) |
b90de034 | 1898 | OVS_REQ_WRLOCK(dpif->upcall_lock) |
8381a3d3 | 1899 | { |
1579cf67 | 1900 | if ((dpif->handlers != NULL) == enable) { |
8381a3d3 BP |
1901 | return 0; |
1902 | } else if (!enable) { | |
1579cf67 | 1903 | destroy_all_channels(dpif); |
8381a3d3 BP |
1904 | return 0; |
1905 | } else { | |
93451a0a | 1906 | return dpif_netlink_refresh_channels(dpif, 1); |
8381a3d3 | 1907 | } |
96fba48f BP |
1908 | } |
1909 | ||
9fafa796 | 1910 | static int |
93451a0a | 1911 | dpif_netlink_recv_set(struct dpif *dpif_, bool enable) |
9fafa796 | 1912 | { |
93451a0a | 1913 | struct dpif_netlink *dpif = dpif_netlink_cast(dpif_); |
9fafa796 BP |
1914 | int error; |
1915 | ||
1579cf67 | 1916 | fat_rwlock_wrlock(&dpif->upcall_lock); |
93451a0a | 1917 | error = dpif_netlink_recv_set__(dpif, enable); |
1579cf67 | 1918 | fat_rwlock_unlock(&dpif->upcall_lock); |
9fafa796 BP |
1919 | |
1920 | return error; | |
1921 | } | |
1922 | ||
1954e6bb | 1923 | static int |
93451a0a | 1924 | dpif_netlink_handlers_set(struct dpif *dpif_, uint32_t n_handlers) |
1954e6bb | 1925 | { |
93451a0a | 1926 | struct dpif_netlink *dpif = dpif_netlink_cast(dpif_); |
1579cf67 AW |
1927 | int error = 0; |
1928 | ||
09cac43f NR |
1929 | #ifdef _WIN32 |
1930 | /* Multiple upcall handlers will be supported once kernel datapath supports | |
1931 | * it. */ | |
1932 | if (n_handlers > 1) { | |
1933 | return error; | |
1934 | } | |
1935 | #endif | |
1936 | ||
1579cf67 AW |
1937 | fat_rwlock_wrlock(&dpif->upcall_lock); |
1938 | if (dpif->handlers) { | |
93451a0a | 1939 | error = dpif_netlink_refresh_channels(dpif, n_handlers); |
1579cf67 AW |
1940 | } |
1941 | fat_rwlock_unlock(&dpif->upcall_lock); | |
1942 | ||
1943 | return error; | |
1954e6bb AW |
1944 | } |
1945 | ||
aae51f53 | 1946 | static int |
93451a0a | 1947 | dpif_netlink_queue_to_priority(const struct dpif *dpif OVS_UNUSED, |
aae51f53 BP |
1948 | uint32_t queue_id, uint32_t *priority) |
1949 | { | |
1950 | if (queue_id < 0xf000) { | |
17ee3c1f | 1951 | *priority = TC_H_MAKE(1 << 16, queue_id + 1); |
aae51f53 BP |
1952 | return 0; |
1953 | } else { | |
1954 | return EINVAL; | |
1955 | } | |
1956 | } | |
1957 | ||
96fba48f | 1958 | static int |
7af12bd7 JS |
1959 | parse_odp_packet(const struct dpif_netlink *dpif, struct ofpbuf *buf, |
1960 | struct dpif_upcall *upcall, int *dp_ifindex) | |
856081f6 | 1961 | { |
df2c07f4 | 1962 | static const struct nl_policy ovs_packet_policy[] = { |
856081f6 | 1963 | /* Always present. */ |
df2c07f4 | 1964 | [OVS_PACKET_ATTR_PACKET] = { .type = NL_A_UNSPEC, |
856081f6 | 1965 | .min_len = ETH_HEADER_LEN }, |
df2c07f4 | 1966 | [OVS_PACKET_ATTR_KEY] = { .type = NL_A_NESTED }, |
856081f6 | 1967 | |
df2c07f4 | 1968 | /* OVS_PACKET_CMD_ACTION only. */ |
e995e3df | 1969 | [OVS_PACKET_ATTR_USERDATA] = { .type = NL_A_UNSPEC, .optional = true }, |
8b7ea2d4 | 1970 | [OVS_PACKET_ATTR_EGRESS_TUN_KEY] = { .type = NL_A_NESTED, .optional = true }, |
7321bda3 | 1971 | [OVS_PACKET_ATTR_ACTIONS] = { .type = NL_A_NESTED, .optional = true }, |
27130224 | 1972 | [OVS_PACKET_ATTR_MRU] = { .type = NL_A_U16, .optional = true } |
856081f6 BP |
1973 | }; |
1974 | ||
0a2869d5 BP |
1975 | struct ofpbuf b = ofpbuf_const_initializer(buf->data, buf->size); |
1976 | struct nlmsghdr *nlmsg = ofpbuf_try_pull(&b, sizeof *nlmsg); | |
1977 | struct genlmsghdr *genl = ofpbuf_try_pull(&b, sizeof *genl); | |
1978 | struct ovs_header *ovs_header = ofpbuf_try_pull(&b, sizeof *ovs_header); | |
982b8810 | 1979 | |
0a2869d5 | 1980 | struct nlattr *a[ARRAY_SIZE(ovs_packet_policy)]; |
df2c07f4 JP |
1981 | if (!nlmsg || !genl || !ovs_header |
1982 | || nlmsg->nlmsg_type != ovs_packet_family | |
1983 | || !nl_policy_parse(&b, 0, ovs_packet_policy, a, | |
1984 | ARRAY_SIZE(ovs_packet_policy))) { | |
856081f6 BP |
1985 | return EINVAL; |
1986 | } | |
1987 | ||
0a2869d5 BP |
1988 | int type = (genl->cmd == OVS_PACKET_CMD_MISS ? DPIF_UC_MISS |
1989 | : genl->cmd == OVS_PACKET_CMD_ACTION ? DPIF_UC_ACTION | |
1990 | : -1); | |
aaff4b55 BP |
1991 | if (type < 0) { |
1992 | return EINVAL; | |
1993 | } | |
82272ede | 1994 | |
877c9270 | 1995 | /* (Re)set ALL fields of '*upcall' on successful return. */ |
aaff4b55 | 1996 | upcall->type = type; |
ebc56baa BP |
1997 | upcall->key = CONST_CAST(struct nlattr *, |
1998 | nl_attr_get(a[OVS_PACKET_ATTR_KEY])); | |
df2c07f4 | 1999 | upcall->key_len = nl_attr_get_size(a[OVS_PACKET_ATTR_KEY]); |
7af12bd7 | 2000 | dpif_flow_hash(&dpif->dpif, upcall->key, upcall->key_len, &upcall->ufid); |
e995e3df | 2001 | upcall->userdata = a[OVS_PACKET_ATTR_USERDATA]; |
8b7ea2d4 | 2002 | upcall->out_tun_key = a[OVS_PACKET_ATTR_EGRESS_TUN_KEY]; |
7321bda3 | 2003 | upcall->actions = a[OVS_PACKET_ATTR_ACTIONS]; |
27130224 | 2004 | upcall->mru = a[OVS_PACKET_ATTR_MRU]; |
da546e07 JR |
2005 | |
2006 | /* Allow overwriting the netlink attribute header without reallocating. */ | |
cf62fa4c | 2007 | dp_packet_use_stub(&upcall->packet, |
da546e07 JR |
2008 | CONST_CAST(struct nlattr *, |
2009 | nl_attr_get(a[OVS_PACKET_ATTR_PACKET])) - 1, | |
2010 | nl_attr_get_size(a[OVS_PACKET_ATTR_PACKET]) + | |
2011 | sizeof(struct nlattr)); | |
cf62fa4c PS |
2012 | dp_packet_set_data(&upcall->packet, |
2013 | (char *)dp_packet_data(&upcall->packet) + sizeof(struct nlattr)); | |
2014 | dp_packet_set_size(&upcall->packet, nl_attr_get_size(a[OVS_PACKET_ATTR_PACKET])); | |
da546e07 | 2015 | |
df2c07f4 | 2016 | *dp_ifindex = ovs_header->dp_ifindex; |
982b8810 | 2017 | |
856081f6 BP |
2018 | return 0; |
2019 | } | |
2020 | ||
09cac43f NR |
2021 | #ifdef _WIN32 |
2022 | #define PACKET_RECV_BATCH_SIZE 50 | |
2023 | static int | |
2024 | dpif_netlink_recv_windows(struct dpif_netlink *dpif, uint32_t handler_id, | |
2025 | struct dpif_upcall *upcall, struct ofpbuf *buf) | |
2026 | OVS_REQ_RDLOCK(dpif->upcall_lock) | |
2027 | { | |
2028 | struct dpif_handler *handler; | |
2029 | int read_tries = 0; | |
2030 | struct dpif_windows_vport_sock *sock_pool; | |
2031 | uint32_t i; | |
2032 | ||
2033 | if (!dpif->handlers) { | |
2034 | return EAGAIN; | |
2035 | } | |
2036 | ||
2037 | /* Only one handler is supported currently. */ | |
2038 | if (handler_id >= 1) { | |
2039 | return EAGAIN; | |
2040 | } | |
2041 | ||
2042 | if (handler_id >= dpif->n_handlers) { | |
2043 | return EAGAIN; | |
2044 | } | |
2045 | ||
2046 | handler = &dpif->handlers[handler_id]; | |
2047 | sock_pool = handler->vport_sock_pool; | |
2048 | ||
2049 | for (i = 0; i < VPORT_SOCK_POOL_SIZE; i++) { | |
2050 | for (;;) { | |
2051 | int dp_ifindex; | |
2052 | int error; | |
2053 | ||
2054 | if (++read_tries > PACKET_RECV_BATCH_SIZE) { | |
2055 | return EAGAIN; | |
2056 | } | |
2057 | ||
2058 | error = nl_sock_recv(sock_pool[i].nl_sock, buf, false); | |
2059 | if (error == ENOBUFS) { | |
2060 | /* ENOBUFS typically means that we've received so many | |
2061 | * packets that the buffer overflowed. Try again | |
2062 | * immediately because there's almost certainly a packet | |
2063 | * waiting for us. */ | |
2064 | /* XXX: report_loss(dpif, ch, idx, handler_id); */ | |
2065 | continue; | |
2066 | } | |
2067 | ||
2068 | /* XXX: ch->last_poll = time_msec(); */ | |
2069 | if (error) { | |
2070 | if (error == EAGAIN) { | |
2071 | break; | |
2072 | } | |
2073 | return error; | |
2074 | } | |
2075 | ||
27edb4aa | 2076 | error = parse_odp_packet(dpif, buf, upcall, &dp_ifindex); |
09cac43f NR |
2077 | if (!error && dp_ifindex == dpif->dp_ifindex) { |
2078 | return 0; | |
2079 | } else if (error) { | |
2080 | return error; | |
2081 | } | |
2082 | } | |
2083 | } | |
2084 | ||
2085 | return EAGAIN; | |
2086 | } | |
2087 | #else | |
856081f6 | 2088 | static int |
93451a0a AS |
2089 | dpif_netlink_recv__(struct dpif_netlink *dpif, uint32_t handler_id, |
2090 | struct dpif_upcall *upcall, struct ofpbuf *buf) | |
b90de034 | 2091 | OVS_REQ_RDLOCK(dpif->upcall_lock) |
96fba48f | 2092 | { |
1579cf67 | 2093 | struct dpif_handler *handler; |
17411ecf | 2094 | int read_tries = 0; |
96fba48f | 2095 | |
1579cf67 AW |
2096 | if (!dpif->handlers || handler_id >= dpif->n_handlers) { |
2097 | return EAGAIN; | |
982b8810 BP |
2098 | } |
2099 | ||
1579cf67 AW |
2100 | handler = &dpif->handlers[handler_id]; |
2101 | if (handler->event_offset >= handler->n_events) { | |
8522ba09 | 2102 | int retval; |
989fd548 | 2103 | |
1579cf67 | 2104 | handler->event_offset = handler->n_events = 0; |
f6d1465c | 2105 | |
8522ba09 | 2106 | do { |
1579cf67 | 2107 | retval = epoll_wait(handler->epoll_fd, handler->epoll_events, |
989fd548 | 2108 | dpif->uc_array_size, 0); |
8522ba09 | 2109 | } while (retval < 0 && errno == EINTR); |
09cac43f | 2110 | |
8522ba09 BP |
2111 | if (retval < 0) { |
2112 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); | |
10a89ef0 | 2113 | VLOG_WARN_RL(&rl, "epoll_wait failed (%s)", ovs_strerror(errno)); |
989fd548 | 2114 | } else if (retval > 0) { |
1579cf67 | 2115 | handler->n_events = retval; |
8522ba09 | 2116 | } |
8522ba09 BP |
2117 | } |
2118 | ||
1579cf67 AW |
2119 | while (handler->event_offset < handler->n_events) { |
2120 | int idx = handler->epoll_events[handler->event_offset].data.u32; | |
2121 | struct dpif_channel *ch = &dpif->handlers[handler_id].channels[idx]; | |
8522ba09 | 2122 | |
1579cf67 | 2123 | handler->event_offset++; |
17411ecf | 2124 | |
f6d1465c | 2125 | for (;;) { |
8522ba09 | 2126 | int dp_ifindex; |
f6d1465c | 2127 | int error; |
17411ecf | 2128 | |
f6d1465c BP |
2129 | if (++read_tries > 50) { |
2130 | return EAGAIN; | |
2131 | } | |
17411ecf | 2132 | |
fe3d61b3 | 2133 | error = nl_sock_recv(ch->sock, buf, false); |
14b4d2f9 BP |
2134 | if (error == ENOBUFS) { |
2135 | /* ENOBUFS typically means that we've received so many | |
2136 | * packets that the buffer overflowed. Try again | |
2137 | * immediately because there's almost certainly a packet | |
2138 | * waiting for us. */ | |
9b00386b | 2139 | report_loss(dpif, ch, idx, handler_id); |
14b4d2f9 BP |
2140 | continue; |
2141 | } | |
2142 | ||
2143 | ch->last_poll = time_msec(); | |
72d32ac0 | 2144 | if (error) { |
72d32ac0 BP |
2145 | if (error == EAGAIN) { |
2146 | break; | |
2147 | } | |
f6d1465c BP |
2148 | return error; |
2149 | } | |
17411ecf | 2150 | |
7af12bd7 | 2151 | error = parse_odp_packet(dpif, buf, upcall, &dp_ifindex); |
a12b3ead | 2152 | if (!error && dp_ifindex == dpif->dp_ifindex) { |
f6d1465c | 2153 | return 0; |
989fd548 | 2154 | } else if (error) { |
f6d1465c | 2155 | return error; |
17411ecf | 2156 | } |
982b8810 | 2157 | } |
50f80534 | 2158 | } |
982b8810 BP |
2159 | |
2160 | return EAGAIN; | |
96fba48f | 2161 | } |
09cac43f | 2162 | #endif |
96fba48f | 2163 | |
9fafa796 | 2164 | static int |
93451a0a AS |
2165 | dpif_netlink_recv(struct dpif *dpif_, uint32_t handler_id, |
2166 | struct dpif_upcall *upcall, struct ofpbuf *buf) | |
9fafa796 | 2167 | { |
93451a0a | 2168 | struct dpif_netlink *dpif = dpif_netlink_cast(dpif_); |
9fafa796 BP |
2169 | int error; |
2170 | ||
1579cf67 | 2171 | fat_rwlock_rdlock(&dpif->upcall_lock); |
09cac43f NR |
2172 | #ifdef _WIN32 |
2173 | error = dpif_netlink_recv_windows(dpif, handler_id, upcall, buf); | |
2174 | #else | |
93451a0a | 2175 | error = dpif_netlink_recv__(dpif, handler_id, upcall, buf); |
09cac43f | 2176 | #endif |
1579cf67 | 2177 | fat_rwlock_unlock(&dpif->upcall_lock); |
9fafa796 BP |
2178 | |
2179 | return error; | |
2180 | } | |
2181 | ||
96fba48f | 2182 | static void |
93451a0a | 2183 | dpif_netlink_recv_wait__(struct dpif_netlink *dpif, uint32_t handler_id) |
b90de034 | 2184 | OVS_REQ_RDLOCK(dpif->upcall_lock) |
96fba48f | 2185 | { |
93451a0a | 2186 | #ifdef _WIN32 |
09cac43f NR |
2187 | uint32_t i; |
2188 | struct dpif_windows_vport_sock *sock_pool = | |
2189 | dpif->handlers[handler_id].vport_sock_pool; | |
2190 | ||
2191 | /* Only one handler is supported currently. */ | |
2192 | if (handler_id >= 1) { | |
2193 | return; | |
2194 | } | |
2195 | ||
2196 | for (i = 0; i < VPORT_SOCK_POOL_SIZE; i++) { | |
2197 | nl_sock_wait(sock_pool[i].nl_sock, POLLIN); | |
2198 | } | |
93451a0a | 2199 | #else |
1579cf67 AW |
2200 | if (dpif->handlers && handler_id < dpif->n_handlers) { |
2201 | struct dpif_handler *handler = &dpif->handlers[handler_id]; | |
2202 | ||
2203 | poll_fd_wait(handler->epoll_fd, POLLIN); | |
17411ecf | 2204 | } |
93451a0a | 2205 | #endif |
96fba48f BP |
2206 | } |
2207 | ||
1ba530f4 | 2208 | static void |
93451a0a | 2209 | dpif_netlink_recv_wait(struct dpif *dpif_, uint32_t handler_id) |
1ba530f4 | 2210 | { |
93451a0a | 2211 | struct dpif_netlink *dpif = dpif_netlink_cast(dpif_); |
17411ecf | 2212 | |
b90de034 | 2213 | fat_rwlock_rdlock(&dpif->upcall_lock); |
93451a0a | 2214 | dpif_netlink_recv_wait__(dpif, handler_id); |
b90de034 AW |
2215 | fat_rwlock_unlock(&dpif->upcall_lock); |
2216 | } | |
2217 | ||
2218 | static void | |
93451a0a | 2219 | dpif_netlink_recv_purge__(struct dpif_netlink *dpif) |
b90de034 AW |
2220 | OVS_REQ_WRLOCK(dpif->upcall_lock) |
2221 | { | |
1579cf67 AW |
2222 | if (dpif->handlers) { |
2223 | size_t i, j; | |
2224 | ||
2225 | for (i = 0; i < dpif->uc_array_size; i++ ) { | |
2226 | if (!dpif->handlers[0].channels[i].sock) { | |
2227 | continue; | |
2228 | } | |
1ba530f4 | 2229 | |
1579cf67 AW |
2230 | for (j = 0; j < dpif->n_handlers; j++) { |
2231 | nl_sock_drain(dpif->handlers[j].channels[i].sock); | |
9fafa796 | 2232 | } |
989fd548 | 2233 | } |
1ba530f4 | 2234 | } |
b90de034 AW |
2235 | } |
2236 | ||
2237 | static void | |
93451a0a | 2238 | dpif_netlink_recv_purge(struct dpif *dpif_) |
b90de034 | 2239 | { |
93451a0a | 2240 | struct dpif_netlink *dpif = dpif_netlink_cast(dpif_); |
b90de034 AW |
2241 | |
2242 | fat_rwlock_wrlock(&dpif->upcall_lock); | |
93451a0a | 2243 | dpif_netlink_recv_purge__(dpif); |
1579cf67 | 2244 | fat_rwlock_unlock(&dpif->upcall_lock); |
1ba530f4 BP |
2245 | } |
2246 | ||
b5cbbcf6 AZ |
2247 | static char * |
2248 | dpif_netlink_get_datapath_version(void) | |
2249 | { | |
2250 | char *version_str = NULL; | |
2251 | ||
2252 | #ifdef __linux__ | |
2253 | ||
2254 | #define MAX_VERSION_STR_SIZE 80 | |
2255 | #define LINUX_DATAPATH_VERSION_FILE "/sys/module/openvswitch/version" | |
2256 | FILE *f; | |
2257 | ||
2258 | f = fopen(LINUX_DATAPATH_VERSION_FILE, "r"); | |
2259 | if (f) { | |
2260 | char *newline; | |
2261 | char version[MAX_VERSION_STR_SIZE]; | |
2262 | ||
2263 | if (fgets(version, MAX_VERSION_STR_SIZE, f)) { | |
2264 | newline = strchr(version, '\n'); | |
2265 | if (newline) { | |
2266 | *newline = '\0'; | |
2267 | } | |
2268 | version_str = xstrdup(version); | |
2269 | } | |
2270 | fclose(f); | |
2271 | } | |
2272 | #endif | |
2273 | ||
2274 | return version_str; | |
2275 | } | |
2276 | ||
c11c9f4a DDP |
2277 | struct dpif_netlink_ct_dump_state { |
2278 | struct ct_dpif_dump_state up; | |
2279 | struct nl_ct_dump_state *nl_ct_dump; | |
2280 | }; | |
2281 | ||
2282 | static int | |
2283 | dpif_netlink_ct_dump_start(struct dpif *dpif OVS_UNUSED, | |
2284 | struct ct_dpif_dump_state **dump_, | |
2285 | const uint16_t *zone) | |
2286 | { | |
2287 | struct dpif_netlink_ct_dump_state *dump; | |
2288 | int err; | |
2289 | ||
2290 | dump = xzalloc(sizeof *dump); | |
2291 | err = nl_ct_dump_start(&dump->nl_ct_dump, zone); | |
2292 | if (err) { | |
2293 | free(dump); | |
2294 | return err; | |
2295 | } | |
2296 | ||
2297 | *dump_ = &dump->up; | |
2298 | ||
2299 | return 0; | |
2300 | } | |
2301 | ||
2302 | static int | |
2303 | dpif_netlink_ct_dump_next(struct dpif *dpif OVS_UNUSED, | |
2304 | struct ct_dpif_dump_state *dump_, | |
2305 | struct ct_dpif_entry *entry) | |
2306 | { | |
2307 | struct dpif_netlink_ct_dump_state *dump; | |
2308 | ||
2309 | INIT_CONTAINER(dump, dump_, up); | |
2310 | ||
2311 | return nl_ct_dump_next(dump->nl_ct_dump, entry); | |
2312 | } | |
2313 | ||
2314 | static int | |
2315 | dpif_netlink_ct_dump_done(struct dpif *dpif OVS_UNUSED, | |
2316 | struct ct_dpif_dump_state *dump_) | |
2317 | { | |
2318 | struct dpif_netlink_ct_dump_state *dump; | |
2319 | int err; | |
2320 | ||
2321 | INIT_CONTAINER(dump, dump_, up); | |
2322 | ||
2323 | err = nl_ct_dump_done(dump->nl_ct_dump); | |
2324 | free(dump); | |
2325 | return err; | |
2326 | } | |
15eabc97 DDP |
2327 | |
2328 | static int | |
2329 | dpif_netlink_ct_flush(struct dpif *dpif OVS_UNUSED, const uint16_t *zone) | |
2330 | { | |
2331 | if (zone) { | |
2332 | return nl_ct_flush_zone(*zone); | |
2333 | } else { | |
2334 | return nl_ct_flush(); | |
2335 | } | |
2336 | } | |
c11c9f4a | 2337 | |
93451a0a | 2338 | const struct dpif_class dpif_netlink_class = { |
1a6f1e2a | 2339 | "system", |
c8973eb6 | 2340 | NULL, /* init */ |
93451a0a | 2341 | dpif_netlink_enumerate, |
0aeaabc8 | 2342 | NULL, |
93451a0a AS |
2343 | dpif_netlink_open, |
2344 | dpif_netlink_close, | |
2345 | dpif_netlink_destroy, | |
2346 | dpif_netlink_run, | |
e4516b20 | 2347 | NULL, /* wait */ |
93451a0a AS |
2348 | dpif_netlink_get_stats, |
2349 | dpif_netlink_port_add, | |
2350 | dpif_netlink_port_del, | |
91364d18 | 2351 | NULL, /* port_set_config */ |
93451a0a AS |
2352 | dpif_netlink_port_query_by_number, |
2353 | dpif_netlink_port_query_by_name, | |
2354 | dpif_netlink_port_get_pid, | |
2355 | dpif_netlink_port_dump_start, | |
2356 | dpif_netlink_port_dump_next, | |
2357 | dpif_netlink_port_dump_done, | |
2358 | dpif_netlink_port_poll, | |
2359 | dpif_netlink_port_poll_wait, | |
2360 | dpif_netlink_flow_flush, | |
2361 | dpif_netlink_flow_dump_create, | |
2362 | dpif_netlink_flow_dump_destroy, | |
2363 | dpif_netlink_flow_dump_thread_create, | |
2364 | dpif_netlink_flow_dump_thread_destroy, | |
2365 | dpif_netlink_flow_dump_next, | |
2366 | dpif_netlink_operate, | |
2367 | dpif_netlink_recv_set, | |
2368 | dpif_netlink_handlers_set, | |
f2eee189 | 2369 | NULL, /* poll_thread_set */ |
93451a0a AS |
2370 | dpif_netlink_queue_to_priority, |
2371 | dpif_netlink_recv, | |
2372 | dpif_netlink_recv_wait, | |
2373 | dpif_netlink_recv_purge, | |
e4e74c3a | 2374 | NULL, /* register_dp_purge_cb */ |
6b31e073 RW |
2375 | NULL, /* register_upcall_cb */ |
2376 | NULL, /* enable_upcall */ | |
2377 | NULL, /* disable_upcall */ | |
b5cbbcf6 | 2378 | dpif_netlink_get_datapath_version, /* get_datapath_version */ |
c11c9f4a DDP |
2379 | dpif_netlink_ct_dump_start, |
2380 | dpif_netlink_ct_dump_next, | |
2381 | dpif_netlink_ct_dump_done, | |
e0467f6d | 2382 | dpif_netlink_ct_flush |
96fba48f | 2383 | }; |
93451a0a | 2384 | |
96fba48f | 2385 | static int |
93451a0a | 2386 | dpif_netlink_init(void) |
96fba48f | 2387 | { |
eb8ed438 BP |
2388 | static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER; |
2389 | static int error; | |
982b8810 | 2390 | |
eb8ed438 | 2391 | if (ovsthread_once_start(&once)) { |
df2c07f4 JP |
2392 | error = nl_lookup_genl_family(OVS_DATAPATH_FAMILY, |
2393 | &ovs_datapath_family); | |
37a1300c | 2394 | if (error) { |
cae7529c CL |
2395 | VLOG_WARN("Generic Netlink family '%s' does not exist. " |
2396 | "The Open vSwitch kernel module is probably not loaded.", | |
2397 | OVS_DATAPATH_FAMILY); | |
37a1300c | 2398 | } |
f0fef760 | 2399 | if (!error) { |
df2c07f4 | 2400 | error = nl_lookup_genl_family(OVS_VPORT_FAMILY, &ovs_vport_family); |
f0fef760 | 2401 | } |
37a1300c | 2402 | if (!error) { |
df2c07f4 | 2403 | error = nl_lookup_genl_family(OVS_FLOW_FAMILY, &ovs_flow_family); |
37a1300c | 2404 | } |
aaff4b55 | 2405 | if (!error) { |
df2c07f4 JP |
2406 | error = nl_lookup_genl_family(OVS_PACKET_FAMILY, |
2407 | &ovs_packet_family); | |
aaff4b55 | 2408 | } |
c7178a0b EJ |
2409 | if (!error) { |
2410 | error = nl_lookup_genl_mcgroup(OVS_VPORT_FAMILY, OVS_VPORT_MCGROUP, | |
b3dcb73c | 2411 | &ovs_vport_mcgroup); |
c7178a0b | 2412 | } |
eb8ed438 BP |
2413 | |
2414 | ovsthread_once_done(&once); | |
982b8810 BP |
2415 | } |
2416 | ||
2417 | return error; | |
96fba48f BP |
2418 | } |
2419 | ||
c19e6535 | 2420 | bool |
93451a0a | 2421 | dpif_netlink_is_internal_device(const char *name) |
9fe3b9a2 | 2422 | { |
93451a0a | 2423 | struct dpif_netlink_vport reply; |
c19e6535 | 2424 | struct ofpbuf *buf; |
9fe3b9a2 | 2425 | int error; |
96fba48f | 2426 | |
93451a0a | 2427 | error = dpif_netlink_vport_get(name, &reply, &buf); |
c19e6535 BP |
2428 | if (!error) { |
2429 | ofpbuf_delete(buf); | |
141d9ce4 | 2430 | } else if (error != ENODEV && error != ENOENT) { |
c19e6535 | 2431 | VLOG_WARN_RL(&error_rl, "%s: vport query failed (%s)", |
10a89ef0 | 2432 | name, ovs_strerror(error)); |
96fba48f BP |
2433 | } |
2434 | ||
df2c07f4 | 2435 | return reply.type == OVS_VPORT_TYPE_INTERNAL; |
96fba48f | 2436 | } |
e0467f6d | 2437 | |
df2c07f4 | 2438 | /* Parses the contents of 'buf', which contains a "struct ovs_header" followed |
c19e6535 BP |
2439 | * by Netlink attributes, into 'vport'. Returns 0 if successful, otherwise a |
2440 | * positive errno value. | |
2441 | * | |
2442 | * 'vport' will contain pointers into 'buf', so the caller should not free | |
2443 | * 'buf' while 'vport' is still in use. */ | |
2444 | static int | |
93451a0a | 2445 | dpif_netlink_vport_from_ofpbuf(struct dpif_netlink_vport *vport, |
c19e6535 BP |
2446 | const struct ofpbuf *buf) |
2447 | { | |
df2c07f4 JP |
2448 | static const struct nl_policy ovs_vport_policy[] = { |
2449 | [OVS_VPORT_ATTR_PORT_NO] = { .type = NL_A_U32 }, | |
2450 | [OVS_VPORT_ATTR_TYPE] = { .type = NL_A_U32 }, | |
2451 | [OVS_VPORT_ATTR_NAME] = { .type = NL_A_STRING, .max_len = IFNAMSIZ }, | |
1579cf67 | 2452 | [OVS_VPORT_ATTR_UPCALL_PID] = { .type = NL_A_UNSPEC }, |
f7df9823 | 2453 | [OVS_VPORT_ATTR_STATS] = { NL_POLICY_FOR(struct ovs_vport_stats), |
c19e6535 | 2454 | .optional = true }, |
df2c07f4 | 2455 | [OVS_VPORT_ATTR_OPTIONS] = { .type = NL_A_NESTED, .optional = true }, |
c19e6535 BP |
2456 | }; |
2457 | ||
93451a0a | 2458 | dpif_netlink_vport_init(vport); |
c19e6535 | 2459 | |
0a2869d5 BP |
2460 | struct ofpbuf b = ofpbuf_const_initializer(buf->data, buf->size); |
2461 | struct nlmsghdr *nlmsg = ofpbuf_try_pull(&b, sizeof *nlmsg); | |
2462 | struct genlmsghdr *genl = ofpbuf_try_pull(&b, sizeof *genl); | |
2463 | struct ovs_header *ovs_header = ofpbuf_try_pull(&b, sizeof *ovs_header); | |
2464 | ||
2465 | struct nlattr *a[ARRAY_SIZE(ovs_vport_policy)]; | |
df2c07f4 JP |
2466 | if (!nlmsg || !genl || !ovs_header |
2467 | || nlmsg->nlmsg_type != ovs_vport_family | |
2468 | || !nl_policy_parse(&b, 0, ovs_vport_policy, a, | |
2469 | ARRAY_SIZE(ovs_vport_policy))) { | |
c19e6535 BP |
2470 | return EINVAL; |
2471 | } | |
c19e6535 | 2472 | |
f0fef760 | 2473 | vport->cmd = genl->cmd; |
df2c07f4 | 2474 | vport->dp_ifindex = ovs_header->dp_ifindex; |
4e022ec0 | 2475 | vport->port_no = nl_attr_get_odp_port(a[OVS_VPORT_ATTR_PORT_NO]); |
df2c07f4 JP |
2476 | vport->type = nl_attr_get_u32(a[OVS_VPORT_ATTR_TYPE]); |
2477 | vport->name = nl_attr_get_string(a[OVS_VPORT_ATTR_NAME]); | |
b063d9f0 | 2478 | if (a[OVS_VPORT_ATTR_UPCALL_PID]) { |
1579cf67 AW |
2479 | vport->n_upcall_pids = nl_attr_get_size(a[OVS_VPORT_ATTR_UPCALL_PID]) |
2480 | / (sizeof *vport->upcall_pids); | |
2481 | vport->upcall_pids = nl_attr_get(a[OVS_VPORT_ATTR_UPCALL_PID]); | |
2482 | ||
b063d9f0 | 2483 | } |
df2c07f4 JP |
2484 | if (a[OVS_VPORT_ATTR_STATS]) { |
2485 | vport->stats = nl_attr_get(a[OVS_VPORT_ATTR_STATS]); | |
2486 | } | |
df2c07f4 JP |
2487 | if (a[OVS_VPORT_ATTR_OPTIONS]) { |
2488 | vport->options = nl_attr_get(a[OVS_VPORT_ATTR_OPTIONS]); | |
2489 | vport->options_len = nl_attr_get_size(a[OVS_VPORT_ATTR_OPTIONS]); | |
c19e6535 | 2490 | } |
c19e6535 BP |
2491 | return 0; |
2492 | } | |
2493 | ||
df2c07f4 | 2494 | /* Appends to 'buf' (which must initially be empty) a "struct ovs_header" |
c19e6535 BP |
2495 | * followed by Netlink attributes corresponding to 'vport'. */ |
2496 | static void | |
93451a0a AS |
2497 | dpif_netlink_vport_to_ofpbuf(const struct dpif_netlink_vport *vport, |
2498 | struct ofpbuf *buf) | |
c19e6535 | 2499 | { |
df2c07f4 | 2500 | struct ovs_header *ovs_header; |
f0fef760 | 2501 | |
df2c07f4 | 2502 | nl_msg_put_genlmsghdr(buf, 0, ovs_vport_family, NLM_F_REQUEST | NLM_F_ECHO, |
69685a88 | 2503 | vport->cmd, OVS_VPORT_VERSION); |
c19e6535 | 2504 | |
df2c07f4 JP |
2505 | ovs_header = ofpbuf_put_uninit(buf, sizeof *ovs_header); |
2506 | ovs_header->dp_ifindex = vport->dp_ifindex; | |
c19e6535 | 2507 | |
4e022ec0 AW |
2508 | if (vport->port_no != ODPP_NONE) { |
2509 | nl_msg_put_odp_port(buf, OVS_VPORT_ATTR_PORT_NO, vport->port_no); | |
c19e6535 BP |
2510 | } |
2511 | ||
df2c07f4 JP |
2512 | if (vport->type != OVS_VPORT_TYPE_UNSPEC) { |
2513 | nl_msg_put_u32(buf, OVS_VPORT_ATTR_TYPE, vport->type); | |
c19e6535 BP |
2514 | } |
2515 | ||
2516 | if (vport->name) { | |
df2c07f4 | 2517 | nl_msg_put_string(buf, OVS_VPORT_ATTR_NAME, vport->name); |
c19e6535 BP |
2518 | } |
2519 | ||
1579cf67 AW |
2520 | if (vport->upcall_pids) { |
2521 | nl_msg_put_unspec(buf, OVS_VPORT_ATTR_UPCALL_PID, | |
2522 | vport->upcall_pids, | |
2523 | vport->n_upcall_pids * sizeof *vport->upcall_pids); | |
a24a6574 | 2524 | } |
b063d9f0 | 2525 | |
c19e6535 | 2526 | if (vport->stats) { |
df2c07f4 | 2527 | nl_msg_put_unspec(buf, OVS_VPORT_ATTR_STATS, |
c19e6535 BP |
2528 | vport->stats, sizeof *vport->stats); |
2529 | } | |
2530 | ||
c19e6535 | 2531 | if (vport->options) { |
df2c07f4 | 2532 | nl_msg_put_nested(buf, OVS_VPORT_ATTR_OPTIONS, |
c19e6535 BP |
2533 | vport->options, vport->options_len); |
2534 | } | |
c19e6535 BP |
2535 | } |
2536 | ||
2537 | /* Clears 'vport' to "empty" values. */ | |
2538 | void | |
93451a0a | 2539 | dpif_netlink_vport_init(struct dpif_netlink_vport *vport) |
c19e6535 BP |
2540 | { |
2541 | memset(vport, 0, sizeof *vport); | |
4e022ec0 | 2542 | vport->port_no = ODPP_NONE; |
c19e6535 BP |
2543 | } |
2544 | ||
2545 | /* Executes 'request' in the kernel datapath. If the command fails, returns a | |
2546 | * positive errno value. Otherwise, if 'reply' and 'bufp' are null, returns 0 | |
2547 | * without doing anything else. If 'reply' and 'bufp' are nonnull, then the | |
df2c07f4 | 2548 | * result of the command is expected to be an ovs_vport also, which is decoded |
c19e6535 BP |
2549 | * and stored in '*reply' and '*bufp'. The caller must free '*bufp' when the |
2550 | * reply is no longer needed ('reply' will contain pointers into '*bufp'). */ | |
2551 | int | |
93451a0a AS |
2552 | dpif_netlink_vport_transact(const struct dpif_netlink_vport *request, |
2553 | struct dpif_netlink_vport *reply, | |
2554 | struct ofpbuf **bufp) | |
c19e6535 | 2555 | { |
f0fef760 | 2556 | struct ofpbuf *request_buf; |
c19e6535 BP |
2557 | int error; |
2558 | ||
cb22974d | 2559 | ovs_assert((reply != NULL) == (bufp != NULL)); |
c19e6535 | 2560 | |
93451a0a | 2561 | error = dpif_netlink_init(); |
42bb6c72 BP |
2562 | if (error) { |
2563 | if (reply) { | |
2564 | *bufp = NULL; | |
93451a0a | 2565 | dpif_netlink_vport_init(reply); |
42bb6c72 BP |
2566 | } |
2567 | return error; | |
2568 | } | |
2569 | ||
f0fef760 | 2570 | request_buf = ofpbuf_new(1024); |
93451a0a | 2571 | dpif_netlink_vport_to_ofpbuf(request, request_buf); |
a88b4e04 | 2572 | error = nl_transact(NETLINK_GENERIC, request_buf, bufp); |
f0fef760 | 2573 | ofpbuf_delete(request_buf); |
c19e6535 | 2574 | |
f0fef760 BP |
2575 | if (reply) { |
2576 | if (!error) { | |
93451a0a | 2577 | error = dpif_netlink_vport_from_ofpbuf(reply, *bufp); |
f0fef760 | 2578 | } |
c19e6535 | 2579 | if (error) { |
93451a0a | 2580 | dpif_netlink_vport_init(reply); |
f0fef760 BP |
2581 | ofpbuf_delete(*bufp); |
2582 | *bufp = NULL; | |
c19e6535 | 2583 | } |
c19e6535 BP |
2584 | } |
2585 | return error; | |
2586 | } | |
2587 | ||
2588 | /* Obtains information about the kernel vport named 'name' and stores it into | |
2589 | * '*reply' and '*bufp'. The caller must free '*bufp' when the reply is no | |
2590 | * longer needed ('reply' will contain pointers into '*bufp'). */ | |
2591 | int | |
93451a0a AS |
2592 | dpif_netlink_vport_get(const char *name, struct dpif_netlink_vport *reply, |
2593 | struct ofpbuf **bufp) | |
c19e6535 | 2594 | { |
93451a0a | 2595 | struct dpif_netlink_vport request; |
c19e6535 | 2596 | |
93451a0a | 2597 | dpif_netlink_vport_init(&request); |
df2c07f4 | 2598 | request.cmd = OVS_VPORT_CMD_GET; |
c19e6535 BP |
2599 | request.name = name; |
2600 | ||
93451a0a | 2601 | return dpif_netlink_vport_transact(&request, reply, bufp); |
c19e6535 | 2602 | } |
93451a0a | 2603 | |
df2c07f4 | 2604 | /* Parses the contents of 'buf', which contains a "struct ovs_header" followed |
aaff4b55 BP |
2605 | * by Netlink attributes, into 'dp'. Returns 0 if successful, otherwise a |
2606 | * positive errno value. | |
d6569377 BP |
2607 | * |
2608 | * 'dp' will contain pointers into 'buf', so the caller should not free 'buf' | |
2609 | * while 'dp' is still in use. */ | |
2610 | static int | |
93451a0a | 2611 | dpif_netlink_dp_from_ofpbuf(struct dpif_netlink_dp *dp, const struct ofpbuf *buf) |
d6569377 | 2612 | { |
df2c07f4 JP |
2613 | static const struct nl_policy ovs_datapath_policy[] = { |
2614 | [OVS_DP_ATTR_NAME] = { .type = NL_A_STRING, .max_len = IFNAMSIZ }, | |
f7df9823 | 2615 | [OVS_DP_ATTR_STATS] = { NL_POLICY_FOR(struct ovs_dp_stats), |
d6569377 | 2616 | .optional = true }, |
847108dc AZ |
2617 | [OVS_DP_ATTR_MEGAFLOW_STATS] = { |
2618 | NL_POLICY_FOR(struct ovs_dp_megaflow_stats), | |
2619 | .optional = true }, | |
d6569377 BP |
2620 | }; |
2621 | ||
93451a0a | 2622 | dpif_netlink_dp_init(dp); |
d6569377 | 2623 | |
0a2869d5 BP |
2624 | struct ofpbuf b = ofpbuf_const_initializer(buf->data, buf->size); |
2625 | struct nlmsghdr *nlmsg = ofpbuf_try_pull(&b, sizeof *nlmsg); | |
2626 | struct genlmsghdr *genl = ofpbuf_try_pull(&b, sizeof *genl); | |
2627 | struct ovs_header *ovs_header = ofpbuf_try_pull(&b, sizeof *ovs_header); | |
2628 | ||
2629 | struct nlattr *a[ARRAY_SIZE(ovs_datapath_policy)]; | |
df2c07f4 JP |
2630 | if (!nlmsg || !genl || !ovs_header |
2631 | || nlmsg->nlmsg_type != ovs_datapath_family | |
2632 | || !nl_policy_parse(&b, 0, ovs_datapath_policy, a, | |
2633 | ARRAY_SIZE(ovs_datapath_policy))) { | |
d6569377 BP |
2634 | return EINVAL; |
2635 | } | |
d6569377 | 2636 | |
aaff4b55 | 2637 | dp->cmd = genl->cmd; |
df2c07f4 JP |
2638 | dp->dp_ifindex = ovs_header->dp_ifindex; |
2639 | dp->name = nl_attr_get_string(a[OVS_DP_ATTR_NAME]); | |
2640 | if (a[OVS_DP_ATTR_STATS]) { | |
6a54dedc | 2641 | dp->stats = nl_attr_get(a[OVS_DP_ATTR_STATS]); |
d6569377 | 2642 | } |
982b8810 | 2643 | |
847108dc | 2644 | if (a[OVS_DP_ATTR_MEGAFLOW_STATS]) { |
6a54dedc | 2645 | dp->megaflow_stats = nl_attr_get(a[OVS_DP_ATTR_MEGAFLOW_STATS]); |
847108dc AZ |
2646 | } |
2647 | ||
d6569377 BP |
2648 | return 0; |
2649 | } | |
2650 | ||
aaff4b55 | 2651 | /* Appends to 'buf' the Generic Netlink message described by 'dp'. */ |
d6569377 | 2652 | static void |
93451a0a | 2653 | dpif_netlink_dp_to_ofpbuf(const struct dpif_netlink_dp *dp, struct ofpbuf *buf) |
d6569377 | 2654 | { |
df2c07f4 | 2655 | struct ovs_header *ovs_header; |
d6569377 | 2656 | |
df2c07f4 | 2657 | nl_msg_put_genlmsghdr(buf, 0, ovs_datapath_family, |
69685a88 JG |
2658 | NLM_F_REQUEST | NLM_F_ECHO, dp->cmd, |
2659 | OVS_DATAPATH_VERSION); | |
aaff4b55 | 2660 | |
df2c07f4 JP |
2661 | ovs_header = ofpbuf_put_uninit(buf, sizeof *ovs_header); |
2662 | ovs_header->dp_ifindex = dp->dp_ifindex; | |
d6569377 BP |
2663 | |
2664 | if (dp->name) { | |
df2c07f4 | 2665 | nl_msg_put_string(buf, OVS_DP_ATTR_NAME, dp->name); |
d6569377 BP |
2666 | } |
2667 | ||
a24a6574 BP |
2668 | if (dp->upcall_pid) { |
2669 | nl_msg_put_u32(buf, OVS_DP_ATTR_UPCALL_PID, *dp->upcall_pid); | |
2670 | } | |
b063d9f0 | 2671 | |
b7fd5e38 TG |
2672 | if (dp->user_features) { |
2673 | nl_msg_put_u32(buf, OVS_DP_ATTR_USER_FEATURES, dp->user_features); | |
2674 | } | |
2675 | ||
df2c07f4 | 2676 | /* Skip OVS_DP_ATTR_STATS since we never have a reason to serialize it. */ |
d6569377 BP |
2677 | } |
2678 | ||
2679 | /* Clears 'dp' to "empty" values. */ | |
d3d8f1f7 | 2680 | static void |
93451a0a | 2681 | dpif_netlink_dp_init(struct dpif_netlink_dp *dp) |
d6569377 BP |
2682 | { |
2683 | memset(dp, 0, sizeof *dp); | |
d6569377 BP |
2684 | } |
2685 | ||
aaff4b55 | 2686 | static void |
93451a0a | 2687 | dpif_netlink_dp_dump_start(struct nl_dump *dump) |
aaff4b55 | 2688 | { |
93451a0a | 2689 | struct dpif_netlink_dp request; |
aaff4b55 BP |
2690 | struct ofpbuf *buf; |
2691 | ||
93451a0a | 2692 | dpif_netlink_dp_init(&request); |
df2c07f4 | 2693 | request.cmd = OVS_DP_CMD_GET; |
aaff4b55 BP |
2694 | |
2695 | buf = ofpbuf_new(1024); | |
93451a0a | 2696 | dpif_netlink_dp_to_ofpbuf(&request, buf); |
a88b4e04 | 2697 | nl_dump_start(dump, NETLINK_GENERIC, buf); |
aaff4b55 BP |
2698 | ofpbuf_delete(buf); |
2699 | } | |
2700 | ||
d6569377 BP |
2701 | /* Executes 'request' in the kernel datapath. If the command fails, returns a |
2702 | * positive errno value. Otherwise, if 'reply' and 'bufp' are null, returns 0 | |
2703 | * without doing anything else. If 'reply' and 'bufp' are nonnull, then the | |
aaff4b55 BP |
2704 | * result of the command is expected to be of the same form, which is decoded |
2705 | * and stored in '*reply' and '*bufp'. The caller must free '*bufp' when the | |
2706 | * reply is no longer needed ('reply' will contain pointers into '*bufp'). */ | |
d3d8f1f7 | 2707 | static int |
93451a0a AS |
2708 | dpif_netlink_dp_transact(const struct dpif_netlink_dp *request, |
2709 | struct dpif_netlink_dp *reply, struct ofpbuf **bufp) | |
d6569377 | 2710 | { |
aaff4b55 | 2711 | struct ofpbuf *request_buf; |
d6569377 | 2712 | int error; |
d6569377 | 2713 | |
cb22974d | 2714 | ovs_assert((reply != NULL) == (bufp != NULL)); |
d6569377 | 2715 | |
aaff4b55 | 2716 | request_buf = ofpbuf_new(1024); |
93451a0a | 2717 | dpif_netlink_dp_to_ofpbuf(request, request_buf); |
a88b4e04 | 2718 | error = nl_transact(NETLINK_GENERIC, request_buf, bufp); |
aaff4b55 | 2719 | ofpbuf_delete(request_buf); |
d6569377 | 2720 | |
aaff4b55 | 2721 | if (reply) { |
93451a0a | 2722 | dpif_netlink_dp_init(reply); |
aaff4b55 | 2723 | if (!error) { |
93451a0a | 2724 | error = dpif_netlink_dp_from_ofpbuf(reply, *bufp); |
aaff4b55 | 2725 | } |
d6569377 | 2726 | if (error) { |
aaff4b55 BP |
2727 | ofpbuf_delete(*bufp); |
2728 | *bufp = NULL; | |
d6569377 | 2729 | } |
d6569377 BP |
2730 | } |
2731 | return error; | |
2732 | } | |
2733 | ||
2734 | /* Obtains information about 'dpif_' and stores it into '*reply' and '*bufp'. | |
2735 | * The caller must free '*bufp' when the reply is no longer needed ('reply' | |
2736 | * will contain pointers into '*bufp'). */ | |
d3d8f1f7 | 2737 | static int |
93451a0a AS |
2738 | dpif_netlink_dp_get(const struct dpif *dpif_, struct dpif_netlink_dp *reply, |
2739 | struct ofpbuf **bufp) | |
d6569377 | 2740 | { |
93451a0a AS |
2741 | struct dpif_netlink *dpif = dpif_netlink_cast(dpif_); |
2742 | struct dpif_netlink_dp request; | |
d6569377 | 2743 | |
93451a0a | 2744 | dpif_netlink_dp_init(&request); |
df2c07f4 | 2745 | request.cmd = OVS_DP_CMD_GET; |
254f2dc8 | 2746 | request.dp_ifindex = dpif->dp_ifindex; |
d6569377 | 2747 | |
93451a0a | 2748 | return dpif_netlink_dp_transact(&request, reply, bufp); |
d6569377 | 2749 | } |
93451a0a | 2750 | |
df2c07f4 | 2751 | /* Parses the contents of 'buf', which contains a "struct ovs_header" followed |
37a1300c | 2752 | * by Netlink attributes, into 'flow'. Returns 0 if successful, otherwise a |
d6569377 BP |
2753 | * positive errno value. |
2754 | * | |
2755 | * 'flow' will contain pointers into 'buf', so the caller should not free 'buf' | |
2756 | * while 'flow' is still in use. */ | |
2757 | static int | |
93451a0a AS |
2758 | dpif_netlink_flow_from_ofpbuf(struct dpif_netlink_flow *flow, |
2759 | const struct ofpbuf *buf) | |
d6569377 | 2760 | { |
70e5ed6f JS |
2761 | static const struct nl_policy ovs_flow_policy[__OVS_FLOW_ATTR_MAX] = { |
2762 | [OVS_FLOW_ATTR_KEY] = { .type = NL_A_NESTED, .optional = true }, | |
e6cc0bab | 2763 | [OVS_FLOW_ATTR_MASK] = { .type = NL_A_NESTED, .optional = true }, |
df2c07f4 | 2764 | [OVS_FLOW_ATTR_ACTIONS] = { .type = NL_A_NESTED, .optional = true }, |
f7df9823 | 2765 | [OVS_FLOW_ATTR_STATS] = { NL_POLICY_FOR(struct ovs_flow_stats), |
d6569377 | 2766 | .optional = true }, |
df2c07f4 JP |
2767 | [OVS_FLOW_ATTR_TCP_FLAGS] = { .type = NL_A_U8, .optional = true }, |
2768 | [OVS_FLOW_ATTR_USED] = { .type = NL_A_U64, .optional = true }, | |
70e5ed6f JS |
2769 | [OVS_FLOW_ATTR_UFID] = { .type = NL_A_UNSPEC, .optional = true, |
2770 | .min_len = sizeof(ovs_u128) }, | |
df2c07f4 | 2771 | /* The kernel never uses OVS_FLOW_ATTR_CLEAR. */ |
43f9ac0a | 2772 | /* The kernel never uses OVS_FLOW_ATTR_PROBE. */ |
70e5ed6f | 2773 | /* The kernel never uses OVS_FLOW_ATTR_UFID_FLAGS. */ |
d6569377 BP |
2774 | }; |
2775 | ||
93451a0a | 2776 | dpif_netlink_flow_init(flow); |
d6569377 | 2777 | |
0a2869d5 BP |
2778 | struct ofpbuf b = ofpbuf_const_initializer(buf->data, buf->size); |
2779 | struct nlmsghdr *nlmsg = ofpbuf_try_pull(&b, sizeof *nlmsg); | |
2780 | struct genlmsghdr *genl = ofpbuf_try_pull(&b, sizeof *genl); | |
2781 | struct ovs_header *ovs_header = ofpbuf_try_pull(&b, sizeof *ovs_header); | |
2782 | ||
2783 | struct nlattr *a[ARRAY_SIZE(ovs_flow_policy)]; | |
df2c07f4 JP |
2784 | if (!nlmsg || !genl || !ovs_header |
2785 | || nlmsg->nlmsg_type != ovs_flow_family | |
2786 | || !nl_policy_parse(&b, 0, ovs_flow_policy, a, | |
2787 | ARRAY_SIZE(ovs_flow_policy))) { | |
d6569377 BP |
2788 | return EINVAL; |
2789 | } | |
70e5ed6f JS |
2790 | if (!a[OVS_FLOW_ATTR_KEY] && !a[OVS_FLOW_ATTR_UFID]) { |
2791 | return EINVAL; | |
2792 | } | |
d6569377 | 2793 | |
37a1300c | 2794 | flow->nlmsg_flags = nlmsg->nlmsg_flags; |
df2c07f4 | 2795 | flow->dp_ifindex = ovs_header->dp_ifindex; |
70e5ed6f JS |
2796 | if (a[OVS_FLOW_ATTR_KEY]) { |
2797 | flow->key = nl_attr_get(a[OVS_FLOW_ATTR_KEY]); | |
2798 | flow->key_len = nl_attr_get_size(a[OVS_FLOW_ATTR_KEY]); | |
2799 | } | |
e6cc0bab | 2800 | |
70e5ed6f JS |
2801 | if (a[OVS_FLOW_ATTR_UFID]) { |
2802 | const ovs_u128 *ufid; | |
2803 | ||
2804 | ufid = nl_attr_get_unspec(a[OVS_FLOW_ATTR_UFID], | |
2805 | nl_attr_get_size(a[OVS_FLOW_ATTR_UFID])); | |
2806 | flow->ufid = *ufid; | |
2807 | flow->ufid_present = true; | |
2808 | } | |
e6cc0bab AZ |
2809 | if (a[OVS_FLOW_ATTR_MASK]) { |
2810 | flow->mask = nl_attr_get(a[OVS_FLOW_ATTR_MASK]); | |
2811 | flow->mask_len = nl_attr_get_size(a[OVS_FLOW_ATTR_MASK]); | |
2812 | } | |
df2c07f4 JP |
2813 | if (a[OVS_FLOW_ATTR_ACTIONS]) { |
2814 | flow->actions = nl_attr_get(a[OVS_FLOW_ATTR_ACTIONS]); | |
2815 | flow->actions_len = nl_attr_get_size(a[OVS_FLOW_ATTR_ACTIONS]); | |
d6569377 | 2816 | } |
df2c07f4 JP |
2817 | if (a[OVS_FLOW_ATTR_STATS]) { |
2818 | flow->stats = nl_attr_get(a[OVS_FLOW_ATTR_STATS]); | |
d6569377 | 2819 | } |
df2c07f4 JP |
2820 | if (a[OVS_FLOW_ATTR_TCP_FLAGS]) { |
2821 | flow->tcp_flags = nl_attr_get(a[OVS_FLOW_ATTR_TCP_FLAGS]); | |
d6569377 | 2822 | } |
df2c07f4 JP |
2823 | if (a[OVS_FLOW_ATTR_USED]) { |
2824 | flow->used = nl_attr_get(a[OVS_FLOW_ATTR_USED]); | |
9e980142 | 2825 | } |
d6569377 BP |
2826 | return 0; |
2827 | } | |
2828 | ||
df2c07f4 | 2829 | /* Appends to 'buf' (which must initially be empty) a "struct ovs_header" |
d6569377 BP |
2830 | * followed by Netlink attributes corresponding to 'flow'. */ |
2831 | static void | |
93451a0a AS |
2832 | dpif_netlink_flow_to_ofpbuf(const struct dpif_netlink_flow *flow, |
2833 | struct ofpbuf *buf) | |
d6569377 | 2834 | { |
df2c07f4 | 2835 | struct ovs_header *ovs_header; |
d6569377 | 2836 | |
df2c07f4 | 2837 | nl_msg_put_genlmsghdr(buf, 0, ovs_flow_family, |
30b44744 | 2838 | NLM_F_REQUEST | flow->nlmsg_flags, |
69685a88 | 2839 | flow->cmd, OVS_FLOW_VERSION); |
37a1300c | 2840 | |
df2c07f4 JP |
2841 | ovs_header = ofpbuf_put_uninit(buf, sizeof *ovs_header); |
2842 | ovs_header->dp_ifindex = flow->dp_ifindex; | |
d6569377 | 2843 | |
70e5ed6f JS |
2844 | if (flow->ufid_present) { |
2845 | nl_msg_put_unspec(buf, OVS_FLOW_ATTR_UFID, &flow->ufid, | |
2846 | sizeof flow->ufid); | |
2847 | } | |
2848 | if (flow->ufid_terse) { | |
2849 | nl_msg_put_u32(buf, OVS_FLOW_ATTR_UFID_FLAGS, | |
2850 | OVS_UFID_F_OMIT_KEY | OVS_UFID_F_OMIT_MASK | |
2851 | | OVS_UFID_F_OMIT_ACTIONS); | |
2852 | } | |
64bb477f JS |
2853 | if (!flow->ufid_terse || !flow->ufid_present) { |
2854 | if (flow->key_len) { | |
2855 | nl_msg_put_unspec(buf, OVS_FLOW_ATTR_KEY, | |
2856 | flow->key, flow->key_len); | |
2857 | } | |
e6cc0bab | 2858 | |
64bb477f JS |
2859 | if (flow->mask_len) { |
2860 | nl_msg_put_unspec(buf, OVS_FLOW_ATTR_MASK, | |
2861 | flow->mask, flow->mask_len); | |
2862 | } | |
2863 | if (flow->actions || flow->actions_len) { | |
2864 | nl_msg_put_unspec(buf, OVS_FLOW_ATTR_ACTIONS, | |
2865 | flow->actions, flow->actions_len); | |
2866 | } | |
d6569377 BP |
2867 | } |
2868 | ||
2869 | /* We never need to send these to the kernel. */ | |
cb22974d BP |
2870 | ovs_assert(!flow->stats); |
2871 | ovs_assert(!flow->tcp_flags); | |
2872 | ovs_assert(!flow->used); | |
d6569377 BP |
2873 | |
2874 | if (flow->clear) { | |
df2c07f4 | 2875 | nl_msg_put_flag(buf, OVS_FLOW_ATTR_CLEAR); |
d6569377 | 2876 | } |
43f9ac0a JR |
2877 | if (flow->probe) { |
2878 | nl_msg_put_flag(buf, OVS_FLOW_ATTR_PROBE); | |
2879 | } | |
d6569377 BP |
2880 | } |
2881 | ||
2882 | /* Clears 'flow' to "empty" values. */ | |
d3d8f1f7 | 2883 | static void |
93451a0a | 2884 | dpif_netlink_flow_init(struct dpif_netlink_flow *flow) |
d6569377 BP |
2885 | { |
2886 | memset(flow, 0, sizeof *flow); | |
2887 | } | |
2888 | ||
2889 | /* Executes 'request' in the kernel datapath. If the command fails, returns a | |
2890 | * positive errno value. Otherwise, if 'reply' and 'bufp' are null, returns 0 | |
2891 | * without doing anything else. If 'reply' and 'bufp' are nonnull, then the | |
37a1300c BP |
2892 | * result of the command is expected to be a flow also, which is decoded and |
2893 | * stored in '*reply' and '*bufp'. The caller must free '*bufp' when the reply | |
2894 | * is no longer needed ('reply' will contain pointers into '*bufp'). */ | |
d3d8f1f7 | 2895 | static int |
93451a0a AS |
2896 | dpif_netlink_flow_transact(struct dpif_netlink_flow *request, |
2897 | struct dpif_netlink_flow *reply, | |
2898 | struct ofpbuf **bufp) | |
d6569377 | 2899 | { |
37a1300c | 2900 | struct ofpbuf *request_buf; |
d6569377 | 2901 | int error; |
d6569377 | 2902 | |
cb22974d | 2903 | ovs_assert((reply != NULL) == (bufp != NULL)); |
d6569377 | 2904 | |
30b44744 BP |
2905 | if (reply) { |
2906 | request->nlmsg_flags |= NLM_F_ECHO; | |
2907 | } | |
2908 | ||
37a1300c | 2909 | request_buf = ofpbuf_new(1024); |
93451a0a | 2910 | dpif_netlink_flow_to_ofpbuf(request, request_buf); |
a88b4e04 | 2911 | error = nl_transact(NETLINK_GENERIC, request_buf, bufp); |
37a1300c | 2912 | ofpbuf_delete(request_buf); |
d6569377 | 2913 | |
37a1300c BP |
2914 | if (reply) { |
2915 | if (!error) { | |
93451a0a | 2916 | error = dpif_netlink_flow_from_ofpbuf(reply, *bufp); |
37a1300c | 2917 | } |
d6569377 | 2918 | if (error) { |
93451a0a | 2919 | dpif_netlink_flow_init(reply); |
37a1300c BP |
2920 | ofpbuf_delete(*bufp); |
2921 | *bufp = NULL; | |
d6569377 | 2922 | } |
d6569377 BP |
2923 | } |
2924 | return error; | |
2925 | } | |
2926 | ||
2927 | static void | |
93451a0a AS |
2928 | dpif_netlink_flow_get_stats(const struct dpif_netlink_flow *flow, |
2929 | struct dpif_flow_stats *stats) | |
d6569377 BP |
2930 | { |
2931 | if (flow->stats) { | |
6a54dedc BP |
2932 | stats->n_packets = get_32aligned_u64(&flow->stats->n_packets); |
2933 | stats->n_bytes = get_32aligned_u64(&flow->stats->n_bytes); | |
d6569377 BP |
2934 | } else { |
2935 | stats->n_packets = 0; | |
2936 | stats->n_bytes = 0; | |
2937 | } | |
0e70cdcb | 2938 | stats->used = flow->used ? get_32aligned_u64(flow->used) : 0; |
d6569377 BP |
2939 | stats->tcp_flags = flow->tcp_flags ? *flow->tcp_flags : 0; |
2940 | } | |
e0467f6d | 2941 | |
14b4d2f9 BP |
2942 | /* Logs information about a packet that was recently lost in 'ch' (in |
2943 | * 'dpif_'). */ | |
2944 | static void | |
93451a0a | 2945 | report_loss(struct dpif_netlink *dpif, struct dpif_channel *ch, uint32_t ch_idx, |
1579cf67 | 2946 | uint32_t handler_id) |
14b4d2f9 | 2947 | { |
14b4d2f9 | 2948 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 5); |
14b4d2f9 BP |
2949 | struct ds s; |
2950 | ||
8d675c5a | 2951 | if (VLOG_DROP_WARN(&rl)) { |
14b4d2f9 BP |
2952 | return; |
2953 | } | |
2954 | ||
2955 | ds_init(&s); | |
2956 | if (ch->last_poll != LLONG_MIN) { | |
2957 | ds_put_format(&s, " (last polled %lld ms ago)", | |
2958 | time_msec() - ch->last_poll); | |
2959 | } | |
14b4d2f9 | 2960 | |
1579cf67 | 2961 | VLOG_WARN("%s: lost packet on port channel %u of handler %u", |
9b00386b | 2962 | dpif_name(&dpif->dpif), ch_idx, handler_id); |
14b4d2f9 BP |
2963 | ds_destroy(&s); |
2964 | } |