]>
Commit | Line | Data |
---|---|---|
96fba48f | 1 | /* |
aa5c0216 | 2 | * Copyright (c) 2008-2017 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" |
c4e08753 | 36 | #include "dpif-netlink-rtnl.h" |
0d71302e | 37 | #include "dpif-provider.h" |
1579cf67 | 38 | #include "fat-rwlock.h" |
0d71302e | 39 | #include "flow.h" |
032aa6a3 | 40 | #include "netdev-linux.h" |
0d71302e | 41 | #include "netdev-provider.h" |
c3827f61 | 42 | #include "netdev-vport.h" |
0d71302e | 43 | #include "netdev.h" |
c11c9f4a | 44 | #include "netlink-conntrack.h" |
45c8d3a1 | 45 | #include "netlink-notifier.h" |
982b8810 | 46 | #include "netlink-socket.h" |
856081f6 | 47 | #include "netlink.h" |
bfda5239 | 48 | #include "netnsid.h" |
feebdea2 | 49 | #include "odp-util.h" |
0d71302e BP |
50 | #include "openvswitch/dynamic-string.h" |
51 | #include "openvswitch/flow.h" | |
52 | #include "openvswitch/match.h" | |
64c96779 | 53 | #include "openvswitch/ofpbuf.h" |
fd016ae3 | 54 | #include "openvswitch/poll-loop.h" |
ee89ea7b | 55 | #include "openvswitch/shash.h" |
0d71302e BP |
56 | #include "openvswitch/vlog.h" |
57 | #include "packets.h" | |
58 | #include "random.h" | |
b3c01ed3 | 59 | #include "sset.h" |
14b4d2f9 | 60 | #include "timeval.h" |
d6569377 | 61 | #include "unaligned.h" |
96fba48f | 62 | #include "util.h" |
5136ce49 | 63 | |
93451a0a | 64 | VLOG_DEFINE_THIS_MODULE(dpif_netlink); |
09cac43f | 65 | #ifdef _WIN32 |
da467899 | 66 | #include "wmi.h" |
09cac43f NR |
67 | enum { WINDOWS = 1 }; |
68 | #else | |
69 | enum { WINDOWS = 0 }; | |
70 | #endif | |
95b1d73a | 71 | enum { MAX_PORTS = USHRT_MAX }; |
773cd538 | 72 | |
24b019f8 JP |
73 | /* This ethtool flag was introduced in Linux 2.6.24, so it might be |
74 | * missing if we have old headers. */ | |
75 | #define ETH_FLAG_LRO (1 << 15) /* LRO is enabled */ | |
76 | ||
f2280b41 | 77 | #define FLOW_DUMP_MAX_BATCH 50 |
8b668ee3 | 78 | #define OPERATE_MAX_OPS 50 |
f2280b41 | 79 | |
93451a0a | 80 | struct dpif_netlink_dp { |
aaff4b55 BP |
81 | /* Generic Netlink header. */ |
82 | uint8_t cmd; | |
d6569377 | 83 | |
df2c07f4 | 84 | /* struct ovs_header. */ |
254f2dc8 | 85 | int dp_ifindex; |
d6569377 BP |
86 | |
87 | /* Attributes. */ | |
df2c07f4 | 88 | const char *name; /* OVS_DP_ATTR_NAME. */ |
fcd5d230 | 89 | const uint32_t *upcall_pid; /* OVS_DP_ATTR_UPCALL_PID. */ |
b7fd5e38 | 90 | uint32_t user_features; /* OVS_DP_ATTR_USER_FEATURES */ |
6a54dedc BP |
91 | const struct ovs_dp_stats *stats; /* OVS_DP_ATTR_STATS. */ |
92 | const struct ovs_dp_megaflow_stats *megaflow_stats; | |
847108dc | 93 | /* OVS_DP_ATTR_MEGAFLOW_STATS.*/ |
d6569377 BP |
94 | }; |
95 | ||
93451a0a AS |
96 | static void dpif_netlink_dp_init(struct dpif_netlink_dp *); |
97 | static int dpif_netlink_dp_from_ofpbuf(struct dpif_netlink_dp *, | |
98 | const struct ofpbuf *); | |
99 | static void dpif_netlink_dp_dump_start(struct nl_dump *); | |
100 | static int dpif_netlink_dp_transact(const struct dpif_netlink_dp *request, | |
101 | struct dpif_netlink_dp *reply, | |
102 | struct ofpbuf **bufp); | |
103 | static int dpif_netlink_dp_get(const struct dpif *, | |
104 | struct dpif_netlink_dp *reply, | |
105 | struct ofpbuf **bufp); | |
106 | ||
107 | struct dpif_netlink_flow { | |
37a1300c BP |
108 | /* Generic Netlink header. */ |
109 | uint8_t cmd; | |
d6569377 | 110 | |
df2c07f4 | 111 | /* struct ovs_header. */ |
d6569377 | 112 | unsigned int nlmsg_flags; |
254f2dc8 | 113 | int dp_ifindex; |
d6569377 BP |
114 | |
115 | /* Attributes. | |
116 | * | |
0e70cdcb BP |
117 | * The 'stats' member points to 64-bit data that might only be aligned on |
118 | * 32-bit boundaries, so get_unaligned_u64() should be used to access its | |
119 | * values. | |
d2a23af2 | 120 | * |
df2c07f4 | 121 | * If 'actions' is nonnull then OVS_FLOW_ATTR_ACTIONS will be included in |
d2a23af2 | 122 | * the Netlink version of the command, even if actions_len is zero. */ |
df2c07f4 | 123 | const struct nlattr *key; /* OVS_FLOW_ATTR_KEY. */ |
d6569377 | 124 | size_t key_len; |
e6cc0bab AZ |
125 | const struct nlattr *mask; /* OVS_FLOW_ATTR_MASK. */ |
126 | size_t mask_len; | |
df2c07f4 | 127 | const struct nlattr *actions; /* OVS_FLOW_ATTR_ACTIONS. */ |
d6569377 | 128 | size_t actions_len; |
70e5ed6f JS |
129 | ovs_u128 ufid; /* OVS_FLOW_ATTR_FLOW_ID. */ |
130 | bool ufid_present; /* Is there a UFID? */ | |
131 | bool ufid_terse; /* Skip serializing key/mask/acts? */ | |
df2c07f4 JP |
132 | const struct ovs_flow_stats *stats; /* OVS_FLOW_ATTR_STATS. */ |
133 | const uint8_t *tcp_flags; /* OVS_FLOW_ATTR_TCP_FLAGS. */ | |
0e70cdcb | 134 | const ovs_32aligned_u64 *used; /* OVS_FLOW_ATTR_USED. */ |
df2c07f4 | 135 | bool clear; /* OVS_FLOW_ATTR_CLEAR. */ |
43f9ac0a | 136 | bool probe; /* OVS_FLOW_ATTR_PROBE. */ |
d6569377 BP |
137 | }; |
138 | ||
93451a0a AS |
139 | static void dpif_netlink_flow_init(struct dpif_netlink_flow *); |
140 | static int dpif_netlink_flow_from_ofpbuf(struct dpif_netlink_flow *, | |
141 | const struct ofpbuf *); | |
142 | static void dpif_netlink_flow_to_ofpbuf(const struct dpif_netlink_flow *, | |
143 | struct ofpbuf *); | |
144 | static int dpif_netlink_flow_transact(struct dpif_netlink_flow *request, | |
145 | struct dpif_netlink_flow *reply, | |
146 | struct ofpbuf **bufp); | |
147 | static void dpif_netlink_flow_get_stats(const struct dpif_netlink_flow *, | |
148 | struct dpif_flow_stats *); | |
7af12bd7 | 149 | static void dpif_netlink_flow_to_dpif_flow(struct dpif *, struct dpif_flow *, |
93451a0a | 150 | const struct dpif_netlink_flow *); |
d6569377 | 151 | |
989fd548 | 152 | /* One of the dpif channels between the kernel and userspace. */ |
fe3d61b3 | 153 | struct dpif_channel { |
14b4d2f9 | 154 | struct nl_sock *sock; /* Netlink socket. */ |
14b4d2f9 | 155 | long long int last_poll; /* Last time this channel was polled. */ |
fe3d61b3 BP |
156 | }; |
157 | ||
09cac43f NR |
158 | #ifdef _WIN32 |
159 | #define VPORT_SOCK_POOL_SIZE 1 | |
160 | /* On Windows, there is no native support for epoll. There are equivalent | |
161 | * interfaces though, that are not used currently. For simpicity, a pool of | |
162 | * netlink sockets is used. Each socket is represented by 'struct | |
163 | * dpif_windows_vport_sock'. Since it is a pool, multiple OVS ports may be | |
164 | * sharing the same socket. In the future, we can add a reference count and | |
165 | * such fields. */ | |
166 | struct dpif_windows_vport_sock { | |
167 | struct nl_sock *nl_sock; /* netlink socket. */ | |
168 | }; | |
169 | #endif | |
170 | ||
1579cf67 AW |
171 | struct dpif_handler { |
172 | struct dpif_channel *channels;/* Array of channels for each handler. */ | |
173 | struct epoll_event *epoll_events; | |
174 | int epoll_fd; /* epoll fd that includes channel socks. */ | |
175 | int n_events; /* Num events returned by epoll_wait(). */ | |
176 | int event_offset; /* Offset into 'epoll_events'. */ | |
09cac43f NR |
177 | |
178 | #ifdef _WIN32 | |
179 | /* Pool of sockets. */ | |
180 | struct dpif_windows_vport_sock *vport_sock_pool; | |
181 | size_t last_used_pool_idx; /* Index to aid in allocating a | |
182 | socket in the pool to a port. */ | |
183 | #endif | |
1579cf67 | 184 | }; |
14b4d2f9 | 185 | |
96fba48f | 186 | /* Datapath interface for the openvswitch Linux kernel module. */ |
93451a0a | 187 | struct dpif_netlink { |
96fba48f | 188 | struct dpif dpif; |
254f2dc8 | 189 | int dp_ifindex; |
e9e28be3 | 190 | |
b063d9f0 | 191 | /* Upcall messages. */ |
1579cf67 AW |
192 | struct fat_rwlock upcall_lock; |
193 | struct dpif_handler *handlers; | |
194 | uint32_t n_handlers; /* Num of upcall handlers. */ | |
195 | int uc_array_size; /* Size of 'handler->channels' and */ | |
196 | /* 'handler->epoll_events'. */ | |
982b8810 | 197 | |
e9e28be3 | 198 | /* Change notification. */ |
e4516b20 | 199 | struct nl_sock *port_notifier; /* vport multicast group subscriber. */ |
61eae437 | 200 | bool refresh_channels; |
96fba48f BP |
201 | }; |
202 | ||
93451a0a | 203 | static void report_loss(struct dpif_netlink *, struct dpif_channel *, |
9b00386b | 204 | uint32_t ch_idx, uint32_t handler_id); |
1579cf67 | 205 | |
96fba48f BP |
206 | static struct vlog_rate_limit error_rl = VLOG_RATE_LIMIT_INIT(9999, 5); |
207 | ||
e4516b20 BP |
208 | /* Generic Netlink family numbers for OVS. |
209 | * | |
93451a0a | 210 | * Initialized by dpif_netlink_init(). */ |
df2c07f4 JP |
211 | static int ovs_datapath_family; |
212 | static int ovs_vport_family; | |
213 | static int ovs_flow_family; | |
214 | static int ovs_packet_family; | |
982b8810 | 215 | |
e4516b20 BP |
216 | /* Generic Netlink multicast groups for OVS. |
217 | * | |
93451a0a | 218 | * Initialized by dpif_netlink_init(). */ |
e4516b20 | 219 | static unsigned int ovs_vport_mcgroup; |
982b8810 | 220 | |
921c370a EG |
221 | /* If true, tunnel devices are created using OVS compat/genetlink. |
222 | * If false, tunnel devices are created with rtnetlink and using light weight | |
223 | * tunnels. If we fail to create the tunnel the rtnetlink+LWT, then we fallback | |
224 | * to using the compat interface. */ | |
225 | static bool ovs_tunnels_out_of_tree = true; | |
226 | ||
93451a0a AS |
227 | static int dpif_netlink_init(void); |
228 | static int open_dpif(const struct dpif_netlink_dp *, struct dpif **); | |
229 | static uint32_t dpif_netlink_port_get_pid(const struct dpif *, | |
230 | odp_port_t port_no, uint32_t hash); | |
09cac43f | 231 | static void dpif_netlink_handler_uninit(struct dpif_handler *handler); |
93451a0a AS |
232 | static int dpif_netlink_refresh_channels(struct dpif_netlink *, |
233 | uint32_t n_handlers); | |
234 | static void dpif_netlink_vport_to_ofpbuf(const struct dpif_netlink_vport *, | |
235 | struct ofpbuf *); | |
236 | static int dpif_netlink_vport_from_ofpbuf(struct dpif_netlink_vport *, | |
237 | const struct ofpbuf *); | |
921c370a EG |
238 | static int dpif_netlink_port_query__(const struct dpif_netlink *dpif, |
239 | odp_port_t port_no, const char *port_name, | |
240 | struct dpif_port *dpif_port); | |
f0fef760 | 241 | |
93451a0a AS |
242 | static struct dpif_netlink * |
243 | dpif_netlink_cast(const struct dpif *dpif) | |
96fba48f | 244 | { |
93451a0a AS |
245 | dpif_assert_class(dpif, &dpif_netlink_class); |
246 | return CONTAINER_OF(dpif, struct dpif_netlink, dpif); | |
96fba48f BP |
247 | } |
248 | ||
d3d22744 | 249 | static int |
93451a0a AS |
250 | dpif_netlink_enumerate(struct sset *all_dps, |
251 | const struct dpif_class *dpif_class OVS_UNUSED) | |
d3d22744 | 252 | { |
aaff4b55 | 253 | struct nl_dump dump; |
d57695d7 JS |
254 | uint64_t reply_stub[NL_DUMP_BUFSIZE / 8]; |
255 | struct ofpbuf msg, buf; | |
aaff4b55 | 256 | int error; |
982b8810 | 257 | |
93451a0a | 258 | error = dpif_netlink_init(); |
aaff4b55 BP |
259 | if (error) { |
260 | return error; | |
982b8810 | 261 | } |
d3d22744 | 262 | |
d57695d7 | 263 | ofpbuf_use_stub(&buf, reply_stub, sizeof reply_stub); |
93451a0a | 264 | dpif_netlink_dp_dump_start(&dump); |
d57695d7 | 265 | while (nl_dump_next(&dump, &msg, &buf)) { |
93451a0a | 266 | struct dpif_netlink_dp dp; |
d6569377 | 267 | |
93451a0a | 268 | if (!dpif_netlink_dp_from_ofpbuf(&dp, &msg)) { |
d0c23a1a | 269 | sset_add(all_dps, dp.name); |
d3d22744 BP |
270 | } |
271 | } | |
d57695d7 | 272 | ofpbuf_uninit(&buf); |
aaff4b55 | 273 | return nl_dump_done(&dump); |
d3d22744 BP |
274 | } |
275 | ||
96fba48f | 276 | static int |
93451a0a AS |
277 | dpif_netlink_open(const struct dpif_class *class OVS_UNUSED, const char *name, |
278 | bool create, struct dpif **dpifp) | |
96fba48f | 279 | { |
93451a0a | 280 | struct dpif_netlink_dp dp_request, dp; |
c19e6535 | 281 | struct ofpbuf *buf; |
ea36840f | 282 | uint32_t upcall_pid; |
c19e6535 | 283 | int error; |
96fba48f | 284 | |
93451a0a | 285 | error = dpif_netlink_init(); |
982b8810 BP |
286 | if (error) { |
287 | return error; | |
288 | } | |
289 | ||
982b8810 | 290 | /* Create or look up datapath. */ |
93451a0a | 291 | dpif_netlink_dp_init(&dp_request); |
ea36840f BP |
292 | if (create) { |
293 | dp_request.cmd = OVS_DP_CMD_NEW; | |
294 | upcall_pid = 0; | |
295 | dp_request.upcall_pid = &upcall_pid; | |
296 | } else { | |
b7fd5e38 TG |
297 | /* Use OVS_DP_CMD_SET to report user features */ |
298 | dp_request.cmd = OVS_DP_CMD_SET; | |
ea36840f | 299 | } |
254f2dc8 | 300 | dp_request.name = name; |
b7fd5e38 | 301 | dp_request.user_features |= OVS_DP_F_UNALIGNED; |
1579cf67 | 302 | dp_request.user_features |= OVS_DP_F_VPORT_PIDS; |
93451a0a | 303 | error = dpif_netlink_dp_transact(&dp_request, &dp, &buf); |
982b8810 BP |
304 | if (error) { |
305 | return error; | |
c19e6535 | 306 | } |
254f2dc8 | 307 | |
e4516b20 | 308 | error = open_dpif(&dp, dpifp); |
8f4a4df5 | 309 | ofpbuf_delete(buf); |
e4516b20 | 310 | return error; |
c19e6535 BP |
311 | } |
312 | ||
e4516b20 | 313 | static int |
93451a0a | 314 | open_dpif(const struct dpif_netlink_dp *dp, struct dpif **dpifp) |
c19e6535 | 315 | { |
93451a0a | 316 | struct dpif_netlink *dpif; |
c19e6535 | 317 | |
17411ecf | 318 | dpif = xzalloc(sizeof *dpif); |
e4516b20 | 319 | dpif->port_notifier = NULL; |
1579cf67 | 320 | fat_rwlock_init(&dpif->upcall_lock); |
c19e6535 | 321 | |
93451a0a | 322 | dpif_init(&dpif->dpif, &dpif_netlink_class, dp->name, |
254f2dc8 | 323 | dp->dp_ifindex, dp->dp_ifindex); |
c19e6535 | 324 | |
254f2dc8 | 325 | dpif->dp_ifindex = dp->dp_ifindex; |
c19e6535 | 326 | *dpifp = &dpif->dpif; |
e4516b20 BP |
327 | |
328 | return 0; | |
96fba48f BP |
329 | } |
330 | ||
1579cf67 AW |
331 | /* Destroys the netlink sockets pointed by the elements in 'socksp' |
332 | * and frees the 'socksp'. */ | |
17411ecf | 333 | static void |
09cac43f | 334 | vport_del_socksp__(struct nl_sock **socksp, uint32_t n_socks) |
17411ecf | 335 | { |
1579cf67 | 336 | size_t i; |
17411ecf | 337 | |
1579cf67 AW |
338 | for (i = 0; i < n_socks; i++) { |
339 | nl_sock_destroy(socksp[i]); | |
50f80534 | 340 | } |
989fd548 | 341 | |
1579cf67 AW |
342 | free(socksp); |
343 | } | |
989fd548 | 344 | |
1579cf67 AW |
345 | /* Creates an array of netlink sockets. Returns an array of the |
346 | * corresponding pointers. Records the error in 'error'. */ | |
347 | static struct nl_sock ** | |
09cac43f | 348 | vport_create_socksp__(uint32_t n_socks, int *error) |
1579cf67 AW |
349 | { |
350 | struct nl_sock **socksp = xzalloc(n_socks * sizeof *socksp); | |
351 | size_t i; | |
352 | ||
353 | for (i = 0; i < n_socks; i++) { | |
354 | *error = nl_sock_create(NETLINK_GENERIC, &socksp[i]); | |
355 | if (*error) { | |
356 | goto error; | |
989fd548 | 357 | } |
1579cf67 | 358 | } |
989fd548 | 359 | |
1579cf67 | 360 | return socksp; |
9fafa796 | 361 | |
1579cf67 | 362 | error: |
09cac43f | 363 | vport_del_socksp__(socksp, n_socks); |
989fd548 | 364 | |
1579cf67 AW |
365 | return NULL; |
366 | } | |
367 | ||
09cac43f NR |
368 | #ifdef _WIN32 |
369 | static void | |
370 | vport_delete_sock_pool(struct dpif_handler *handler) | |
371 | OVS_REQ_WRLOCK(dpif->upcall_lock) | |
372 | { | |
373 | if (handler->vport_sock_pool) { | |
374 | uint32_t i; | |
375 | struct dpif_windows_vport_sock *sock_pool = | |
376 | handler->vport_sock_pool; | |
377 | ||
378 | for (i = 0; i < VPORT_SOCK_POOL_SIZE; i++) { | |
379 | if (sock_pool[i].nl_sock) { | |
380 | nl_sock_unsubscribe_packets(sock_pool[i].nl_sock); | |
381 | nl_sock_destroy(sock_pool[i].nl_sock); | |
382 | sock_pool[i].nl_sock = NULL; | |
383 | } | |
384 | } | |
385 | ||
386 | free(handler->vport_sock_pool); | |
387 | handler->vport_sock_pool = NULL; | |
388 | } | |
389 | } | |
390 | ||
391 | static int | |
392 | vport_create_sock_pool(struct dpif_handler *handler) | |
393 | OVS_REQ_WRLOCK(dpif->upcall_lock) | |
394 | { | |
395 | struct dpif_windows_vport_sock *sock_pool; | |
396 | size_t i; | |
397 | int error = 0; | |
398 | ||
399 | sock_pool = xzalloc(VPORT_SOCK_POOL_SIZE * sizeof *sock_pool); | |
400 | for (i = 0; i < VPORT_SOCK_POOL_SIZE; i++) { | |
401 | error = nl_sock_create(NETLINK_GENERIC, &sock_pool[i].nl_sock); | |
402 | if (error) { | |
403 | goto error; | |
404 | } | |
405 | ||
406 | /* Enable the netlink socket to receive packets. This is equivalent to | |
407 | * calling nl_sock_join_mcgroup() to receive events. */ | |
408 | error = nl_sock_subscribe_packets(sock_pool[i].nl_sock); | |
409 | if (error) { | |
410 | goto error; | |
411 | } | |
412 | } | |
413 | ||
414 | handler->vport_sock_pool = sock_pool; | |
415 | handler->last_used_pool_idx = 0; | |
416 | return 0; | |
417 | ||
418 | error: | |
419 | vport_delete_sock_pool(handler); | |
420 | return error; | |
421 | } | |
422 | ||
423 | /* Returns an array pointers to netlink sockets. The sockets are picked from a | |
424 | * pool. Records the error in 'error'. */ | |
425 | static struct nl_sock ** | |
426 | vport_create_socksp_windows(struct dpif_netlink *dpif, int *error) | |
427 | OVS_REQ_WRLOCK(dpif->upcall_lock) | |
428 | { | |
429 | uint32_t n_socks = dpif->n_handlers; | |
430 | struct nl_sock **socksp; | |
431 | size_t i; | |
432 | ||
433 | ovs_assert(n_socks <= 1); | |
434 | socksp = xzalloc(n_socks * sizeof *socksp); | |
435 | ||
436 | /* Pick netlink sockets to use in a round-robin fashion from each | |
437 | * handler's pool of sockets. */ | |
438 | for (i = 0; i < n_socks; i++) { | |
439 | struct dpif_handler *handler = &dpif->handlers[i]; | |
440 | struct dpif_windows_vport_sock *sock_pool = handler->vport_sock_pool; | |
441 | size_t index = handler->last_used_pool_idx; | |
442 | ||
443 | /* A pool of sockets is allocated when the handler is initialized. */ | |
444 | if (sock_pool == NULL) { | |
445 | free(socksp); | |
446 | *error = EINVAL; | |
447 | return NULL; | |
448 | } | |
449 | ||
450 | ovs_assert(index < VPORT_SOCK_POOL_SIZE); | |
451 | socksp[i] = sock_pool[index].nl_sock; | |
452 | socksp[i] = sock_pool[index].nl_sock; | |
453 | ovs_assert(socksp[i]); | |
454 | index = (index == VPORT_SOCK_POOL_SIZE - 1) ? 0 : index + 1; | |
455 | handler->last_used_pool_idx = index; | |
456 | } | |
457 | ||
458 | return socksp; | |
459 | } | |
460 | ||
461 | static void | |
462 | vport_del_socksp_windows(struct dpif_netlink *dpif, struct nl_sock **socksp) | |
463 | { | |
464 | free(socksp); | |
465 | } | |
466 | #endif /* _WIN32 */ | |
467 | ||
468 | static struct nl_sock ** | |
469 | vport_create_socksp(struct dpif_netlink *dpif, int *error) | |
470 | { | |
471 | #ifdef _WIN32 | |
472 | return vport_create_socksp_windows(dpif, error); | |
473 | #else | |
474 | return vport_create_socksp__(dpif->n_handlers, error); | |
475 | #endif | |
476 | } | |
477 | ||
478 | static void | |
479 | vport_del_socksp(struct dpif_netlink *dpif, struct nl_sock **socksp) | |
480 | { | |
481 | #ifdef _WIN32 | |
482 | vport_del_socksp_windows(dpif, socksp); | |
483 | #else | |
484 | vport_del_socksp__(socksp, dpif->n_handlers); | |
485 | #endif | |
486 | } | |
487 | ||
1579cf67 AW |
488 | /* Given the array of pointers to netlink sockets 'socksp', returns |
489 | * the array of corresponding pids. If the 'socksp' is NULL, returns | |
490 | * a single-element array of value 0. */ | |
491 | static uint32_t * | |
492 | vport_socksp_to_pids(struct nl_sock **socksp, uint32_t n_socks) | |
493 | { | |
494 | uint32_t *pids; | |
495 | ||
496 | if (!socksp) { | |
497 | pids = xzalloc(sizeof *pids); | |
498 | } else { | |
499 | size_t i; | |
500 | ||
501 | pids = xzalloc(n_socks * sizeof *pids); | |
502 | for (i = 0; i < n_socks; i++) { | |
503 | pids[i] = nl_sock_pid(socksp[i]); | |
504 | } | |
17411ecf | 505 | } |
989fd548 | 506 | |
1579cf67 AW |
507 | return pids; |
508 | } | |
509 | ||
510 | /* Given the port number 'port_idx', extracts the pids of netlink sockets | |
511 | * associated to the port and assigns it to 'upcall_pids'. */ | |
512 | static bool | |
93451a0a | 513 | vport_get_pids(struct dpif_netlink *dpif, uint32_t port_idx, |
1579cf67 AW |
514 | uint32_t **upcall_pids) |
515 | { | |
516 | uint32_t *pids; | |
517 | size_t i; | |
989fd548 | 518 | |
1579cf67 AW |
519 | /* Since the nl_sock can only be assigned in either all |
520 | * or none "dpif->handlers" channels, the following check | |
521 | * would suffice. */ | |
522 | if (!dpif->handlers[0].channels[port_idx].sock) { | |
523 | return false; | |
524 | } | |
09cac43f | 525 | ovs_assert(!WINDOWS || dpif->n_handlers <= 1); |
1579cf67 AW |
526 | |
527 | pids = xzalloc(dpif->n_handlers * sizeof *pids); | |
528 | ||
529 | for (i = 0; i < dpif->n_handlers; i++) { | |
530 | pids[i] = nl_sock_pid(dpif->handlers[i].channels[port_idx].sock); | |
531 | } | |
532 | ||
533 | *upcall_pids = pids; | |
989fd548 | 534 | |
1579cf67 | 535 | return true; |
989fd548 JP |
536 | } |
537 | ||
538 | static int | |
93451a0a | 539 | vport_add_channels(struct dpif_netlink *dpif, odp_port_t port_no, |
1579cf67 | 540 | struct nl_sock **socksp) |
989fd548 JP |
541 | { |
542 | struct epoll_event event; | |
4e022ec0 | 543 | uint32_t port_idx = odp_to_u32(port_no); |
1579cf67 AW |
544 | size_t i, j; |
545 | int error; | |
989fd548 | 546 | |
1579cf67 | 547 | if (dpif->handlers == NULL) { |
989fd548 JP |
548 | return 0; |
549 | } | |
550 | ||
1579cf67 AW |
551 | /* We assume that the datapath densely chooses port numbers, which can |
552 | * therefore be used as an index into 'channels' and 'epoll_events' of | |
553 | * 'dpif->handler'. */ | |
4e022ec0 AW |
554 | if (port_idx >= dpif->uc_array_size) { |
555 | uint32_t new_size = port_idx + 1; | |
989fd548 | 556 | |
12d76859 | 557 | if (new_size > MAX_PORTS) { |
989fd548 JP |
558 | VLOG_WARN_RL(&error_rl, "%s: datapath port %"PRIu32" too big", |
559 | dpif_name(&dpif->dpif), port_no); | |
560 | return EFBIG; | |
561 | } | |
562 | ||
1579cf67 AW |
563 | for (i = 0; i < dpif->n_handlers; i++) { |
564 | struct dpif_handler *handler = &dpif->handlers[i]; | |
565 | ||
566 | handler->channels = xrealloc(handler->channels, | |
567 | new_size * sizeof *handler->channels); | |
568 | ||
569 | for (j = dpif->uc_array_size; j < new_size; j++) { | |
570 | handler->channels[j].sock = NULL; | |
571 | } | |
572 | ||
573 | handler->epoll_events = xrealloc(handler->epoll_events, | |
574 | new_size * sizeof *handler->epoll_events); | |
989fd548 | 575 | |
1579cf67 | 576 | } |
989fd548 JP |
577 | dpif->uc_array_size = new_size; |
578 | } | |
579 | ||
580 | memset(&event, 0, sizeof event); | |
581 | event.events = EPOLLIN; | |
4e022ec0 | 582 | event.data.u32 = port_idx; |
989fd548 | 583 | |
1579cf67 AW |
584 | for (i = 0; i < dpif->n_handlers; i++) { |
585 | struct dpif_handler *handler = &dpif->handlers[i]; | |
586 | ||
09cac43f | 587 | #ifndef _WIN32 |
1579cf67 AW |
588 | if (epoll_ctl(handler->epoll_fd, EPOLL_CTL_ADD, nl_sock_fd(socksp[i]), |
589 | &event) < 0) { | |
590 | error = errno; | |
591 | goto error; | |
592 | } | |
93451a0a | 593 | #endif |
1579cf67 AW |
594 | dpif->handlers[i].channels[port_idx].sock = socksp[i]; |
595 | dpif->handlers[i].channels[port_idx].last_poll = LLONG_MIN; | |
596 | } | |
989fd548 JP |
597 | |
598 | return 0; | |
1579cf67 AW |
599 | |
600 | error: | |
601 | for (j = 0; j < i; j++) { | |
09cac43f | 602 | #ifndef _WIN32 |
1579cf67 AW |
603 | epoll_ctl(dpif->handlers[j].epoll_fd, EPOLL_CTL_DEL, |
604 | nl_sock_fd(socksp[j]), NULL); | |
93451a0a | 605 | #endif |
1579cf67 AW |
606 | dpif->handlers[j].channels[port_idx].sock = NULL; |
607 | } | |
608 | ||
609 | return error; | |
989fd548 JP |
610 | } |
611 | ||
612 | static void | |
93451a0a | 613 | vport_del_channels(struct dpif_netlink *dpif, odp_port_t port_no) |
989fd548 | 614 | { |
4e022ec0 | 615 | uint32_t port_idx = odp_to_u32(port_no); |
1579cf67 | 616 | size_t i; |
989fd548 | 617 | |
1579cf67 | 618 | if (!dpif->handlers || port_idx >= dpif->uc_array_size) { |
989fd548 JP |
619 | return; |
620 | } | |
621 | ||
1579cf67 AW |
622 | /* Since the sock can only be assigned in either all or none |
623 | * of "dpif->handlers" channels, the following check would | |
624 | * suffice. */ | |
625 | if (!dpif->handlers[0].channels[port_idx].sock) { | |
989fd548 JP |
626 | return; |
627 | } | |
628 | ||
1579cf67 AW |
629 | for (i = 0; i < dpif->n_handlers; i++) { |
630 | struct dpif_handler *handler = &dpif->handlers[i]; | |
09cac43f | 631 | #ifndef _WIN32 |
1579cf67 AW |
632 | epoll_ctl(handler->epoll_fd, EPOLL_CTL_DEL, |
633 | nl_sock_fd(handler->channels[port_idx].sock), NULL); | |
634 | nl_sock_destroy(handler->channels[port_idx].sock); | |
09cac43f | 635 | #endif |
1579cf67 AW |
636 | handler->channels[port_idx].sock = NULL; |
637 | handler->event_offset = handler->n_events = 0; | |
638 | } | |
639 | } | |
640 | ||
641 | static void | |
93451a0a AS |
642 | destroy_all_channels(struct dpif_netlink *dpif) |
643 | OVS_REQ_WRLOCK(dpif->upcall_lock) | |
1579cf67 AW |
644 | { |
645 | unsigned int i; | |
646 | ||
647 | if (!dpif->handlers) { | |
648 | return; | |
649 | } | |
650 | ||
651 | for (i = 0; i < dpif->uc_array_size; i++ ) { | |
93451a0a | 652 | struct dpif_netlink_vport vport_request; |
1579cf67 AW |
653 | uint32_t upcall_pids = 0; |
654 | ||
655 | /* Since the sock can only be assigned in either all or none | |
656 | * of "dpif->handlers" channels, the following check would | |
657 | * suffice. */ | |
658 | if (!dpif->handlers[0].channels[i].sock) { | |
659 | continue; | |
660 | } | |
661 | ||
662 | /* Turn off upcalls. */ | |
93451a0a | 663 | dpif_netlink_vport_init(&vport_request); |
1579cf67 AW |
664 | vport_request.cmd = OVS_VPORT_CMD_SET; |
665 | vport_request.dp_ifindex = dpif->dp_ifindex; | |
666 | vport_request.port_no = u32_to_odp(i); | |
a78f446a | 667 | vport_request.n_upcall_pids = 1; |
1579cf67 | 668 | vport_request.upcall_pids = &upcall_pids; |
93451a0a | 669 | dpif_netlink_vport_transact(&vport_request, NULL, NULL); |
1579cf67 AW |
670 | |
671 | vport_del_channels(dpif, u32_to_odp(i)); | |
672 | } | |
673 | ||
674 | for (i = 0; i < dpif->n_handlers; i++) { | |
675 | struct dpif_handler *handler = &dpif->handlers[i]; | |
676 | ||
09cac43f | 677 | dpif_netlink_handler_uninit(handler); |
1579cf67 AW |
678 | free(handler->epoll_events); |
679 | free(handler->channels); | |
680 | } | |
989fd548 | 681 | |
1579cf67 AW |
682 | free(dpif->handlers); |
683 | dpif->handlers = NULL; | |
684 | dpif->n_handlers = 0; | |
685 | dpif->uc_array_size = 0; | |
17411ecf JG |
686 | } |
687 | ||
96fba48f | 688 | static void |
93451a0a | 689 | dpif_netlink_close(struct dpif *dpif_) |
96fba48f | 690 | { |
93451a0a | 691 | struct dpif_netlink *dpif = dpif_netlink_cast(dpif_); |
c7178a0b | 692 | |
e4516b20 | 693 | nl_sock_destroy(dpif->port_notifier); |
1579cf67 AW |
694 | |
695 | fat_rwlock_wrlock(&dpif->upcall_lock); | |
696 | destroy_all_channels(dpif); | |
697 | fat_rwlock_unlock(&dpif->upcall_lock); | |
698 | ||
699 | fat_rwlock_destroy(&dpif->upcall_lock); | |
96fba48f BP |
700 | free(dpif); |
701 | } | |
702 | ||
703 | static int | |
93451a0a | 704 | dpif_netlink_destroy(struct dpif *dpif_) |
96fba48f | 705 | { |
93451a0a AS |
706 | struct dpif_netlink *dpif = dpif_netlink_cast(dpif_); |
707 | struct dpif_netlink_dp dp; | |
d6569377 | 708 | |
93451a0a | 709 | dpif_netlink_dp_init(&dp); |
df2c07f4 | 710 | dp.cmd = OVS_DP_CMD_DEL; |
254f2dc8 | 711 | dp.dp_ifindex = dpif->dp_ifindex; |
93451a0a | 712 | return dpif_netlink_dp_transact(&dp, NULL, NULL); |
96fba48f BP |
713 | } |
714 | ||
a36de779 | 715 | static bool |
93451a0a | 716 | dpif_netlink_run(struct dpif *dpif_) |
61eae437 | 717 | { |
93451a0a | 718 | struct dpif_netlink *dpif = dpif_netlink_cast(dpif_); |
1579cf67 | 719 | |
61eae437 BP |
720 | if (dpif->refresh_channels) { |
721 | dpif->refresh_channels = false; | |
1579cf67 | 722 | fat_rwlock_wrlock(&dpif->upcall_lock); |
93451a0a | 723 | dpif_netlink_refresh_channels(dpif, dpif->n_handlers); |
1579cf67 | 724 | fat_rwlock_unlock(&dpif->upcall_lock); |
61eae437 | 725 | } |
a36de779 | 726 | return false; |
61eae437 BP |
727 | } |
728 | ||
96fba48f | 729 | static int |
93451a0a | 730 | dpif_netlink_get_stats(const struct dpif *dpif_, struct dpif_dp_stats *stats) |
96fba48f | 731 | { |
93451a0a | 732 | struct dpif_netlink_dp dp; |
d6569377 BP |
733 | struct ofpbuf *buf; |
734 | int error; | |
735 | ||
93451a0a | 736 | error = dpif_netlink_dp_get(dpif_, &dp, &buf); |
d6569377 | 737 | if (!error) { |
6a54dedc BP |
738 | memset(stats, 0, sizeof *stats); |
739 | ||
740 | if (dp.stats) { | |
741 | stats->n_hit = get_32aligned_u64(&dp.stats->n_hit); | |
742 | stats->n_missed = get_32aligned_u64(&dp.stats->n_missed); | |
743 | stats->n_lost = get_32aligned_u64(&dp.stats->n_lost); | |
744 | stats->n_flows = get_32aligned_u64(&dp.stats->n_flows); | |
745 | } | |
746 | ||
747 | if (dp.megaflow_stats) { | |
748 | stats->n_masks = dp.megaflow_stats->n_masks; | |
749 | stats->n_mask_hit = get_32aligned_u64( | |
750 | &dp.megaflow_stats->n_mask_hit); | |
751 | } else { | |
752 | stats->n_masks = UINT32_MAX; | |
753 | stats->n_mask_hit = UINT64_MAX; | |
754 | } | |
d6569377 BP |
755 | ofpbuf_delete(buf); |
756 | } | |
757 | return error; | |
96fba48f BP |
758 | } |
759 | ||
b9ad7294 | 760 | static const char * |
93451a0a | 761 | get_vport_type(const struct dpif_netlink_vport *vport) |
b9ad7294 EJ |
762 | { |
763 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 20); | |
764 | ||
765 | switch (vport->type) { | |
5ed51209 JS |
766 | case OVS_VPORT_TYPE_NETDEV: { |
767 | const char *type = netdev_get_type_from_name(vport->name); | |
768 | ||
769 | return type ? type : "system"; | |
770 | } | |
b9ad7294 EJ |
771 | |
772 | case OVS_VPORT_TYPE_INTERNAL: | |
773 | return "internal"; | |
774 | ||
c1fc1411 JG |
775 | case OVS_VPORT_TYPE_GENEVE: |
776 | return "geneve"; | |
777 | ||
b9ad7294 EJ |
778 | case OVS_VPORT_TYPE_GRE: |
779 | return "gre"; | |
780 | ||
b9ad7294 EJ |
781 | case OVS_VPORT_TYPE_VXLAN: |
782 | return "vxlan"; | |
783 | ||
a6ae068b LJ |
784 | case OVS_VPORT_TYPE_LISP: |
785 | return "lisp"; | |
786 | ||
4237026e PS |
787 | case OVS_VPORT_TYPE_STT: |
788 | return "stt"; | |
789 | ||
c387d817 GR |
790 | case OVS_VPORT_TYPE_ERSPAN: |
791 | case OVS_VPORT_TYPE_IP6ERSPAN: | |
792 | case OVS_VPORT_TYPE_IP6GRE: | |
793 | return ""; | |
794 | ||
b9ad7294 EJ |
795 | case OVS_VPORT_TYPE_UNSPEC: |
796 | case __OVS_VPORT_TYPE_MAX: | |
797 | break; | |
798 | } | |
799 | ||
800 | VLOG_WARN_RL(&rl, "dp%d: port `%s' has unsupported type %u", | |
801 | vport->dp_ifindex, vport->name, (unsigned int) vport->type); | |
802 | return "unknown"; | |
803 | } | |
804 | ||
c4e08753 | 805 | enum ovs_vport_type |
20c57607 | 806 | netdev_to_ovs_vport_type(const char *type) |
c060c4cf | 807 | { |
c060c4cf EJ |
808 | if (!strcmp(type, "tap") || !strcmp(type, "system")) { |
809 | return OVS_VPORT_TYPE_NETDEV; | |
810 | } else if (!strcmp(type, "internal")) { | |
811 | return OVS_VPORT_TYPE_INTERNAL; | |
4237026e PS |
812 | } else if (strstr(type, "stt")) { |
813 | return OVS_VPORT_TYPE_STT; | |
c1fc1411 JG |
814 | } else if (!strcmp(type, "geneve")) { |
815 | return OVS_VPORT_TYPE_GENEVE; | |
c060c4cf EJ |
816 | } else if (strstr(type, "gre")) { |
817 | return OVS_VPORT_TYPE_GRE; | |
c060c4cf EJ |
818 | } else if (!strcmp(type, "vxlan")) { |
819 | return OVS_VPORT_TYPE_VXLAN; | |
a6ae068b LJ |
820 | } else if (!strcmp(type, "lisp")) { |
821 | return OVS_VPORT_TYPE_LISP; | |
c060c4cf EJ |
822 | } else { |
823 | return OVS_VPORT_TYPE_UNSPEC; | |
824 | } | |
825 | } | |
826 | ||
96fba48f | 827 | static int |
20c57607 EG |
828 | dpif_netlink_port_add__(struct dpif_netlink *dpif, const char *name, |
829 | enum ovs_vport_type type, | |
830 | struct ofpbuf *options, | |
93451a0a | 831 | odp_port_t *port_nop) |
b90de034 | 832 | OVS_REQ_WRLOCK(dpif->upcall_lock) |
96fba48f | 833 | { |
93451a0a | 834 | struct dpif_netlink_vport request, reply; |
c19e6535 | 835 | struct ofpbuf *buf; |
1579cf67 AW |
836 | struct nl_sock **socksp = NULL; |
837 | uint32_t *upcall_pids; | |
838 | int error = 0; | |
96fba48f | 839 | |
1579cf67 | 840 | if (dpif->handlers) { |
09cac43f | 841 | socksp = vport_create_socksp(dpif, &error); |
1579cf67 | 842 | if (!socksp) { |
989fd548 JP |
843 | return error; |
844 | } | |
845 | } | |
846 | ||
93451a0a | 847 | dpif_netlink_vport_init(&request); |
df2c07f4 | 848 | request.cmd = OVS_VPORT_CMD_NEW; |
254f2dc8 | 849 | request.dp_ifindex = dpif->dp_ifindex; |
20c57607 EG |
850 | request.type = type; |
851 | request.name = name; | |
852 | ||
853 | request.port_no = *port_nop; | |
854 | upcall_pids = vport_socksp_to_pids(socksp, dpif->n_handlers); | |
855 | request.n_upcall_pids = socksp ? dpif->n_handlers : 1; | |
856 | request.upcall_pids = upcall_pids; | |
857 | ||
858 | if (options) { | |
859 | request.options = options->data; | |
860 | request.options_len = options->size; | |
861 | } | |
862 | ||
863 | error = dpif_netlink_vport_transact(&request, &reply, &buf); | |
864 | if (!error) { | |
865 | *port_nop = reply.port_no; | |
866 | } else { | |
867 | if (error == EBUSY && *port_nop != ODPP_NONE) { | |
868 | VLOG_INFO("%s: requested port %"PRIu32" is in use", | |
869 | dpif_name(&dpif->dpif), *port_nop); | |
870 | } | |
871 | ||
872 | vport_del_socksp(dpif, socksp); | |
873 | goto exit; | |
874 | } | |
875 | ||
876 | if (socksp) { | |
877 | error = vport_add_channels(dpif, *port_nop, socksp); | |
878 | if (error) { | |
879 | VLOG_INFO("%s: could not add channel for port %s", | |
880 | dpif_name(&dpif->dpif), name); | |
881 | ||
882 | /* Delete the port. */ | |
883 | dpif_netlink_vport_init(&request); | |
884 | request.cmd = OVS_VPORT_CMD_DEL; | |
885 | request.dp_ifindex = dpif->dp_ifindex; | |
886 | request.port_no = *port_nop; | |
887 | dpif_netlink_vport_transact(&request, NULL, NULL); | |
888 | vport_del_socksp(dpif, socksp); | |
889 | goto exit; | |
890 | } | |
891 | } | |
892 | free(socksp); | |
893 | ||
894 | exit: | |
895 | ofpbuf_delete(buf); | |
896 | free(upcall_pids); | |
897 | ||
898 | return error; | |
899 | } | |
900 | ||
901 | static int | |
902 | dpif_netlink_port_add_compat(struct dpif_netlink *dpif, struct netdev *netdev, | |
903 | odp_port_t *port_nop) | |
904 | OVS_REQ_WRLOCK(dpif->upcall_lock) | |
905 | { | |
906 | const struct netdev_tunnel_config *tnl_cfg; | |
907 | char namebuf[NETDEV_VPORT_NAME_BUFSIZE]; | |
908 | const char *type = netdev_get_type(netdev); | |
909 | uint64_t options_stub[64 / 8]; | |
910 | enum ovs_vport_type ovs_type; | |
911 | struct ofpbuf options; | |
912 | const char *name; | |
913 | ||
914 | name = netdev_vport_get_dpif_port(netdev, namebuf, sizeof namebuf); | |
915 | ||
916 | ovs_type = netdev_to_ovs_vport_type(netdev_get_type(netdev)); | |
917 | if (ovs_type == OVS_VPORT_TYPE_UNSPEC) { | |
c283069c BP |
918 | VLOG_WARN_RL(&error_rl, "%s: cannot create port `%s' because it has " |
919 | "unsupported type `%s'", | |
9b00386b | 920 | dpif_name(&dpif->dpif), name, type); |
c283069c BP |
921 | return EINVAL; |
922 | } | |
c3827f61 | 923 | |
20c57607 | 924 | if (ovs_type == OVS_VPORT_TYPE_NETDEV) { |
93451a0a | 925 | #ifdef _WIN32 |
09cac43f | 926 | /* XXX : Map appropiate Windows handle */ |
93451a0a | 927 | #else |
24b019f8 | 928 | netdev_linux_ethtool_set_flag(netdev, ETH_FLAG_LRO, "LRO", false); |
93451a0a | 929 | #endif |
24b019f8 JP |
930 | } |
931 | ||
da467899 | 932 | #ifdef _WIN32 |
20c57607 | 933 | if (ovs_type == OVS_VPORT_TYPE_INTERNAL) { |
da467899 AS |
934 | if (!create_wmi_port(name)){ |
935 | VLOG_ERR("Could not create wmi internal port with name:%s", name); | |
da467899 AS |
936 | return EINVAL; |
937 | }; | |
938 | } | |
939 | #endif | |
940 | ||
26508d9a | 941 | tnl_cfg = netdev_get_tunnel_config(netdev); |
526df7d8 | 942 | if (tnl_cfg && (tnl_cfg->dst_port != 0 || tnl_cfg->exts)) { |
26508d9a | 943 | ofpbuf_use_stack(&options, options_stub, sizeof options_stub); |
526df7d8 TG |
944 | if (tnl_cfg->dst_port) { |
945 | nl_msg_put_u16(&options, OVS_TUNNEL_ATTR_DST_PORT, | |
946 | ntohs(tnl_cfg->dst_port)); | |
947 | } | |
948 | if (tnl_cfg->exts) { | |
949 | size_t ext_ofs; | |
950 | int i; | |
951 | ||
952 | ext_ofs = nl_msg_start_nested(&options, OVS_TUNNEL_ATTR_EXTENSION); | |
953 | for (i = 0; i < 32; i++) { | |
954 | if (tnl_cfg->exts & (1 << i)) { | |
955 | nl_msg_put_flag(&options, i); | |
956 | } | |
957 | } | |
958 | nl_msg_end_nested(&options, ext_ofs); | |
959 | } | |
20c57607 EG |
960 | return dpif_netlink_port_add__(dpif, name, ovs_type, &options, |
961 | port_nop); | |
2510ba7c | 962 | } else { |
20c57607 | 963 | return dpif_netlink_port_add__(dpif, name, ovs_type, NULL, port_nop); |
78a2d59c | 964 | } |
c3827f61 | 965 | |
20c57607 | 966 | } |
989fd548 | 967 | |
921c370a | 968 | static int |
c4e08753 EG |
969 | dpif_netlink_rtnl_port_create_and_add(struct dpif_netlink *dpif, |
970 | struct netdev *netdev, | |
971 | odp_port_t *port_nop) | |
972 | OVS_REQ_WRLOCK(dpif->upcall_lock) | |
973 | { | |
974 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 20); | |
975 | char namebuf[NETDEV_VPORT_NAME_BUFSIZE]; | |
976 | const char *name; | |
977 | int error; | |
989fd548 | 978 | |
c4e08753 EG |
979 | error = dpif_netlink_rtnl_port_create(netdev); |
980 | if (error) { | |
981 | if (error != EOPNOTSUPP) { | |
d52ef4eb | 982 | VLOG_WARN_RL(&rl, "Failed to create %s with rtnetlink: %s", |
c4e08753 EG |
983 | netdev_get_name(netdev), ovs_strerror(error)); |
984 | } | |
985 | return error; | |
986 | } | |
1579cf67 | 987 | |
c4e08753 EG |
988 | name = netdev_vport_get_dpif_port(netdev, namebuf, sizeof namebuf); |
989 | error = dpif_netlink_port_add__(dpif, name, OVS_VPORT_TYPE_NETDEV, NULL, | |
990 | port_nop); | |
991 | if (error) { | |
992 | dpif_netlink_rtnl_port_destroy(name, netdev_get_type(netdev)); | |
993 | } | |
994 | return error; | |
995 | } | |
96fba48f BP |
996 | |
997 | static int | |
93451a0a AS |
998 | dpif_netlink_port_add(struct dpif *dpif_, struct netdev *netdev, |
999 | odp_port_t *port_nop) | |
9fafa796 | 1000 | { |
93451a0a | 1001 | struct dpif_netlink *dpif = dpif_netlink_cast(dpif_); |
921c370a | 1002 | int error = EOPNOTSUPP; |
9fafa796 | 1003 | |
1579cf67 | 1004 | fat_rwlock_wrlock(&dpif->upcall_lock); |
921c370a EG |
1005 | if (!ovs_tunnels_out_of_tree) { |
1006 | error = dpif_netlink_rtnl_port_create_and_add(dpif, netdev, port_nop); | |
1007 | } | |
1008 | if (error) { | |
1009 | error = dpif_netlink_port_add_compat(dpif, netdev, port_nop); | |
1010 | } | |
1579cf67 | 1011 | fat_rwlock_unlock(&dpif->upcall_lock); |
9fafa796 BP |
1012 | |
1013 | return error; | |
1014 | } | |
1015 | ||
1016 | static int | |
93451a0a | 1017 | dpif_netlink_port_del__(struct dpif_netlink *dpif, odp_port_t port_no) |
b90de034 | 1018 | OVS_REQ_WRLOCK(dpif->upcall_lock) |
96fba48f | 1019 | { |
93451a0a | 1020 | struct dpif_netlink_vport vport; |
921c370a | 1021 | struct dpif_port dpif_port; |
773cd538 | 1022 | int error; |
c19e6535 | 1023 | |
921c370a EG |
1024 | error = dpif_netlink_port_query__(dpif, port_no, NULL, &dpif_port); |
1025 | if (error) { | |
1026 | return error; | |
1027 | } | |
1028 | ||
93451a0a | 1029 | dpif_netlink_vport_init(&vport); |
df2c07f4 | 1030 | vport.cmd = OVS_VPORT_CMD_DEL; |
254f2dc8 | 1031 | vport.dp_ifindex = dpif->dp_ifindex; |
c19e6535 | 1032 | vport.port_no = port_no; |
da467899 | 1033 | #ifdef _WIN32 |
921c370a EG |
1034 | if (!strcmp(dpif_port.type, "internal")) { |
1035 | if (!delete_wmi_port(dpif_port.name)) { | |
da467899 | 1036 | VLOG_ERR("Could not delete wmi port with name: %s", |
921c370a | 1037 | dpif_port.name); |
da467899 AS |
1038 | }; |
1039 | } | |
1040 | #endif | |
93451a0a | 1041 | error = dpif_netlink_vport_transact(&vport, NULL, NULL); |
773cd538 | 1042 | |
1579cf67 | 1043 | vport_del_channels(dpif, port_no); |
989fd548 | 1044 | |
921c370a EG |
1045 | if (!error && !ovs_tunnels_out_of_tree) { |
1046 | error = dpif_netlink_rtnl_port_destroy(dpif_port.name, dpif_port.type); | |
1047 | if (error == EOPNOTSUPP) { | |
1048 | error = 0; | |
1049 | } | |
1050 | } | |
1051 | ||
1052 | dpif_port_destroy(&dpif_port); | |
1053 | ||
773cd538 | 1054 | return error; |
c3827f61 | 1055 | } |
3abc4a1a | 1056 | |
9fafa796 | 1057 | static int |
93451a0a | 1058 | dpif_netlink_port_del(struct dpif *dpif_, odp_port_t port_no) |
9fafa796 | 1059 | { |
93451a0a | 1060 | struct dpif_netlink *dpif = dpif_netlink_cast(dpif_); |
9fafa796 BP |
1061 | int error; |
1062 | ||
1579cf67 | 1063 | fat_rwlock_wrlock(&dpif->upcall_lock); |
93451a0a | 1064 | error = dpif_netlink_port_del__(dpif, port_no); |
1579cf67 | 1065 | fat_rwlock_unlock(&dpif->upcall_lock); |
9fafa796 BP |
1066 | |
1067 | return error; | |
1068 | } | |
1069 | ||
c3827f61 | 1070 | static int |
93451a0a AS |
1071 | dpif_netlink_port_query__(const struct dpif_netlink *dpif, odp_port_t port_no, |
1072 | const char *port_name, struct dpif_port *dpif_port) | |
c3827f61 | 1073 | { |
93451a0a AS |
1074 | struct dpif_netlink_vport request; |
1075 | struct dpif_netlink_vport reply; | |
c19e6535 | 1076 | struct ofpbuf *buf; |
4c738a8d BP |
1077 | int error; |
1078 | ||
93451a0a | 1079 | dpif_netlink_vport_init(&request); |
df2c07f4 | 1080 | request.cmd = OVS_VPORT_CMD_GET; |
9b00386b | 1081 | request.dp_ifindex = dpif->dp_ifindex; |
c19e6535 BP |
1082 | request.port_no = port_no; |
1083 | request.name = port_name; | |
4c738a8d | 1084 | |
93451a0a | 1085 | error = dpif_netlink_vport_transact(&request, &reply, &buf); |
c19e6535 | 1086 | if (!error) { |
33db1592 BP |
1087 | if (reply.dp_ifindex != request.dp_ifindex) { |
1088 | /* A query by name reported that 'port_name' is in some datapath | |
1089 | * other than 'dpif', but the caller wants to know about 'dpif'. */ | |
1090 | error = ENODEV; | |
4afba28d | 1091 | } else if (dpif_port) { |
33db1592 | 1092 | dpif_port->name = xstrdup(reply.name); |
b9ad7294 | 1093 | dpif_port->type = xstrdup(get_vport_type(&reply)); |
33db1592 BP |
1094 | dpif_port->port_no = reply.port_no; |
1095 | } | |
c19e6535 | 1096 | ofpbuf_delete(buf); |
3abc4a1a | 1097 | } |
c19e6535 | 1098 | return error; |
96fba48f BP |
1099 | } |
1100 | ||
1101 | static int | |
93451a0a AS |
1102 | dpif_netlink_port_query_by_number(const struct dpif *dpif_, odp_port_t port_no, |
1103 | struct dpif_port *dpif_port) | |
96fba48f | 1104 | { |
93451a0a | 1105 | struct dpif_netlink *dpif = dpif_netlink_cast(dpif_); |
9b00386b | 1106 | |
93451a0a | 1107 | return dpif_netlink_port_query__(dpif, port_no, NULL, dpif_port); |
96fba48f BP |
1108 | } |
1109 | ||
1110 | static int | |
93451a0a | 1111 | dpif_netlink_port_query_by_name(const struct dpif *dpif_, const char *devname, |
4c738a8d | 1112 | struct dpif_port *dpif_port) |
96fba48f | 1113 | { |
93451a0a | 1114 | struct dpif_netlink *dpif = dpif_netlink_cast(dpif_); |
9b00386b | 1115 | |
93451a0a | 1116 | return dpif_netlink_port_query__(dpif, 0, devname, dpif_port); |
96fba48f BP |
1117 | } |
1118 | ||
98403001 | 1119 | static uint32_t |
93451a0a AS |
1120 | dpif_netlink_port_get_pid__(const struct dpif_netlink *dpif, |
1121 | odp_port_t port_no, uint32_t hash) | |
b90de034 | 1122 | OVS_REQ_RDLOCK(dpif->upcall_lock) |
98403001 | 1123 | { |
4e022ec0 | 1124 | uint32_t port_idx = odp_to_u32(port_no); |
9fafa796 | 1125 | uint32_t pid = 0; |
98403001 | 1126 | |
f8fc5489 | 1127 | if (dpif->handlers && dpif->uc_array_size > 0) { |
4e022ec0 | 1128 | /* The ODPP_NONE "reserved" port number uses the "ovs-system"'s |
989fd548 | 1129 | * channel, since it is not heavily loaded. */ |
4e022ec0 | 1130 | uint32_t idx = port_idx >= dpif->uc_array_size ? 0 : port_idx; |
1579cf67 AW |
1131 | struct dpif_handler *h = &dpif->handlers[hash % dpif->n_handlers]; |
1132 | ||
17f2748d AW |
1133 | /* Needs to check in case the socket pointer is changed in between |
1134 | * the holding of upcall_lock. A known case happens when the main | |
1135 | * thread deletes the vport while the handler thread is handling | |
1136 | * the upcall from that port. */ | |
1137 | if (h->channels[idx].sock) { | |
1138 | pid = nl_sock_pid(h->channels[idx].sock); | |
1139 | } | |
98403001 | 1140 | } |
9fafa796 BP |
1141 | |
1142 | return pid; | |
98403001 BP |
1143 | } |
1144 | ||
b90de034 | 1145 | static uint32_t |
93451a0a AS |
1146 | dpif_netlink_port_get_pid(const struct dpif *dpif_, odp_port_t port_no, |
1147 | uint32_t hash) | |
b90de034 | 1148 | { |
93451a0a | 1149 | const struct dpif_netlink *dpif = dpif_netlink_cast(dpif_); |
b90de034 AW |
1150 | uint32_t ret; |
1151 | ||
1152 | fat_rwlock_rdlock(&dpif->upcall_lock); | |
93451a0a | 1153 | ret = dpif_netlink_port_get_pid__(dpif, port_no, hash); |
b90de034 AW |
1154 | fat_rwlock_unlock(&dpif->upcall_lock); |
1155 | ||
1156 | return ret; | |
1157 | } | |
1158 | ||
96fba48f | 1159 | static int |
93451a0a | 1160 | dpif_netlink_flow_flush(struct dpif *dpif_) |
96fba48f | 1161 | { |
93451a0a AS |
1162 | const struct dpif_netlink *dpif = dpif_netlink_cast(dpif_); |
1163 | struct dpif_netlink_flow flow; | |
37a1300c | 1164 | |
93451a0a | 1165 | dpif_netlink_flow_init(&flow); |
df2c07f4 | 1166 | flow.cmd = OVS_FLOW_CMD_DEL; |
254f2dc8 | 1167 | flow.dp_ifindex = dpif->dp_ifindex; |
f7dde6df PB |
1168 | |
1169 | if (netdev_is_flow_api_enabled()) { | |
dfaf79dd | 1170 | netdev_ports_flow_flush(dpif_->dpif_class); |
f7dde6df PB |
1171 | } |
1172 | ||
93451a0a | 1173 | return dpif_netlink_flow_transact(&flow, NULL, NULL); |
96fba48f BP |
1174 | } |
1175 | ||
93451a0a | 1176 | struct dpif_netlink_port_state { |
f0fef760 | 1177 | struct nl_dump dump; |
d57695d7 | 1178 | struct ofpbuf buf; |
c19e6535 BP |
1179 | }; |
1180 | ||
222837c4 | 1181 | static void |
93451a0a AS |
1182 | dpif_netlink_port_dump_start__(const struct dpif_netlink *dpif, |
1183 | struct nl_dump *dump) | |
96fba48f | 1184 | { |
93451a0a | 1185 | struct dpif_netlink_vport request; |
f0fef760 BP |
1186 | struct ofpbuf *buf; |
1187 | ||
93451a0a | 1188 | dpif_netlink_vport_init(&request); |
067f1e23 | 1189 | request.cmd = OVS_VPORT_CMD_GET; |
254f2dc8 | 1190 | request.dp_ifindex = dpif->dp_ifindex; |
f0fef760 BP |
1191 | |
1192 | buf = ofpbuf_new(1024); | |
93451a0a | 1193 | dpif_netlink_vport_to_ofpbuf(&request, buf); |
222837c4 | 1194 | nl_dump_start(dump, NETLINK_GENERIC, buf); |
f0fef760 | 1195 | ofpbuf_delete(buf); |
222837c4 BP |
1196 | } |
1197 | ||
1198 | static int | |
93451a0a | 1199 | dpif_netlink_port_dump_start(const struct dpif *dpif_, void **statep) |
222837c4 | 1200 | { |
93451a0a AS |
1201 | struct dpif_netlink *dpif = dpif_netlink_cast(dpif_); |
1202 | struct dpif_netlink_port_state *state; | |
222837c4 BP |
1203 | |
1204 | *statep = state = xmalloc(sizeof *state); | |
93451a0a | 1205 | dpif_netlink_port_dump_start__(dpif, &state->dump); |
f0fef760 | 1206 | |
d57695d7 | 1207 | ofpbuf_init(&state->buf, NL_DUMP_BUFSIZE); |
b0ec0f27 BP |
1208 | return 0; |
1209 | } | |
1210 | ||
7c1ef244 | 1211 | static int |
93451a0a AS |
1212 | dpif_netlink_port_dump_next__(const struct dpif_netlink *dpif, |
1213 | struct nl_dump *dump, | |
1214 | struct dpif_netlink_vport *vport, | |
1215 | struct ofpbuf *buffer) | |
222837c4 | 1216 | { |
222837c4 BP |
1217 | struct ofpbuf buf; |
1218 | int error; | |
1219 | ||
d57695d7 | 1220 | if (!nl_dump_next(dump, &buf, buffer)) { |
222837c4 BP |
1221 | return EOF; |
1222 | } | |
1223 | ||
93451a0a | 1224 | error = dpif_netlink_vport_from_ofpbuf(vport, &buf); |
222837c4 BP |
1225 | if (error) { |
1226 | VLOG_WARN_RL(&error_rl, "%s: failed to parse vport record (%s)", | |
1227 | dpif_name(&dpif->dpif), ovs_strerror(error)); | |
1228 | } | |
1229 | return error; | |
1230 | } | |
1231 | ||
b0ec0f27 | 1232 | static int |
93451a0a AS |
1233 | dpif_netlink_port_dump_next(const struct dpif *dpif_, void *state_, |
1234 | struct dpif_port *dpif_port) | |
b0ec0f27 | 1235 | { |
93451a0a AS |
1236 | struct dpif_netlink *dpif = dpif_netlink_cast(dpif_); |
1237 | struct dpif_netlink_port_state *state = state_; | |
1238 | struct dpif_netlink_vport vport; | |
96fba48f BP |
1239 | int error; |
1240 | ||
93451a0a AS |
1241 | error = dpif_netlink_port_dump_next__(dpif, &state->dump, &vport, |
1242 | &state->buf); | |
c3827f61 | 1243 | if (error) { |
f0fef760 | 1244 | return error; |
c3827f61 | 1245 | } |
ebc56baa | 1246 | dpif_port->name = CONST_CAST(char *, vport.name); |
b9ad7294 | 1247 | dpif_port->type = CONST_CAST(char *, get_vport_type(&vport)); |
f0fef760 BP |
1248 | dpif_port->port_no = vport.port_no; |
1249 | return 0; | |
b0ec0f27 BP |
1250 | } |
1251 | ||
1252 | static int | |
93451a0a | 1253 | dpif_netlink_port_dump_done(const struct dpif *dpif_ OVS_UNUSED, void *state_) |
b0ec0f27 | 1254 | { |
93451a0a | 1255 | struct dpif_netlink_port_state *state = state_; |
f0fef760 | 1256 | int error = nl_dump_done(&state->dump); |
8522b383 | 1257 | |
d57695d7 | 1258 | ofpbuf_uninit(&state->buf); |
b0ec0f27 | 1259 | free(state); |
f0fef760 | 1260 | return error; |
96fba48f BP |
1261 | } |
1262 | ||
e9e28be3 | 1263 | static int |
93451a0a | 1264 | dpif_netlink_port_poll(const struct dpif *dpif_, char **devnamep) |
e9e28be3 | 1265 | { |
93451a0a | 1266 | struct dpif_netlink *dpif = dpif_netlink_cast(dpif_); |
e9e28be3 | 1267 | |
e4516b20 BP |
1268 | /* Lazily create the Netlink socket to listen for notifications. */ |
1269 | if (!dpif->port_notifier) { | |
1270 | struct nl_sock *sock; | |
1271 | int error; | |
1272 | ||
1273 | error = nl_sock_create(NETLINK_GENERIC, &sock); | |
1274 | if (error) { | |
1275 | return error; | |
1276 | } | |
1277 | ||
1278 | error = nl_sock_join_mcgroup(sock, ovs_vport_mcgroup); | |
1279 | if (error) { | |
1280 | nl_sock_destroy(sock); | |
1281 | return error; | |
1282 | } | |
1283 | dpif->port_notifier = sock; | |
1284 | ||
1285 | /* We have no idea of the current state so report that everything | |
1286 | * changed. */ | |
1287 | return ENOBUFS; | |
1288 | } | |
1289 | ||
1290 | for (;;) { | |
1291 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
1292 | uint64_t buf_stub[4096 / 8]; | |
1293 | struct ofpbuf buf; | |
1294 | int error; | |
1295 | ||
1296 | ofpbuf_use_stub(&buf, buf_stub, sizeof buf_stub); | |
a86bd14e | 1297 | error = nl_sock_recv(dpif->port_notifier, &buf, NULL, false); |
e4516b20 | 1298 | if (!error) { |
93451a0a | 1299 | struct dpif_netlink_vport vport; |
e4516b20 | 1300 | |
93451a0a | 1301 | error = dpif_netlink_vport_from_ofpbuf(&vport, &buf); |
e4516b20 BP |
1302 | if (!error) { |
1303 | if (vport.dp_ifindex == dpif->dp_ifindex | |
1304 | && (vport.cmd == OVS_VPORT_CMD_NEW | |
1305 | || vport.cmd == OVS_VPORT_CMD_DEL | |
1306 | || vport.cmd == OVS_VPORT_CMD_SET)) { | |
1307 | VLOG_DBG("port_changed: dpif:%s vport:%s cmd:%"PRIu8, | |
1308 | dpif->dpif.full_name, vport.name, vport.cmd); | |
1579cf67 | 1309 | if (vport.cmd == OVS_VPORT_CMD_DEL && dpif->handlers) { |
61eae437 BP |
1310 | dpif->refresh_channels = true; |
1311 | } | |
e4516b20 | 1312 | *devnamep = xstrdup(vport.name); |
59e0c910 | 1313 | ofpbuf_uninit(&buf); |
e4516b20 | 1314 | return 0; |
e4516b20 BP |
1315 | } |
1316 | } | |
59e0c910 BP |
1317 | } else if (error != EAGAIN) { |
1318 | VLOG_WARN_RL(&rl, "error reading or parsing netlink (%s)", | |
1319 | ovs_strerror(error)); | |
1320 | nl_sock_drain(dpif->port_notifier); | |
1321 | error = ENOBUFS; | |
e4516b20 BP |
1322 | } |
1323 | ||
59e0c910 BP |
1324 | ofpbuf_uninit(&buf); |
1325 | if (error) { | |
1326 | return error; | |
1327 | } | |
e9e28be3 | 1328 | } |
e9e28be3 BP |
1329 | } |
1330 | ||
1331 | static void | |
93451a0a | 1332 | dpif_netlink_port_poll_wait(const struct dpif *dpif_) |
e9e28be3 | 1333 | { |
93451a0a | 1334 | const struct dpif_netlink *dpif = dpif_netlink_cast(dpif_); |
e4516b20 BP |
1335 | |
1336 | if (dpif->port_notifier) { | |
1337 | nl_sock_wait(dpif->port_notifier, POLLIN); | |
1338 | } else { | |
e9e28be3 | 1339 | poll_immediate_wake(); |
e9e28be3 BP |
1340 | } |
1341 | } | |
1342 | ||
6fe09f8c | 1343 | static void |
70e5ed6f JS |
1344 | dpif_netlink_flow_init_ufid(struct dpif_netlink_flow *request, |
1345 | const ovs_u128 *ufid, bool terse) | |
1346 | { | |
1347 | if (ufid) { | |
1348 | request->ufid = *ufid; | |
1349 | request->ufid_present = true; | |
1350 | } else { | |
1351 | request->ufid_present = false; | |
1352 | } | |
1353 | request->ufid_terse = terse; | |
1354 | } | |
1355 | ||
1356 | static void | |
1357 | dpif_netlink_init_flow_get__(const struct dpif_netlink *dpif, | |
1358 | const struct nlattr *key, size_t key_len, | |
1359 | const ovs_u128 *ufid, bool terse, | |
1360 | struct dpif_netlink_flow *request) | |
96fba48f | 1361 | { |
93451a0a | 1362 | dpif_netlink_flow_init(request); |
6fe09f8c JS |
1363 | request->cmd = OVS_FLOW_CMD_GET; |
1364 | request->dp_ifindex = dpif->dp_ifindex; | |
1365 | request->key = key; | |
1366 | request->key_len = key_len; | |
70e5ed6f JS |
1367 | dpif_netlink_flow_init_ufid(request, ufid, terse); |
1368 | } | |
1369 | ||
1370 | static void | |
1371 | dpif_netlink_init_flow_get(const struct dpif_netlink *dpif, | |
1372 | const struct dpif_flow_get *get, | |
1373 | struct dpif_netlink_flow *request) | |
1374 | { | |
1375 | dpif_netlink_init_flow_get__(dpif, get->key, get->key_len, get->ufid, | |
1376 | false, request); | |
30053024 BP |
1377 | } |
1378 | ||
1379 | static int | |
70e5ed6f JS |
1380 | dpif_netlink_flow_get__(const struct dpif_netlink *dpif, |
1381 | const struct nlattr *key, size_t key_len, | |
1382 | const ovs_u128 *ufid, bool terse, | |
1383 | struct dpif_netlink_flow *reply, struct ofpbuf **bufp) | |
30053024 | 1384 | { |
93451a0a | 1385 | struct dpif_netlink_flow request; |
30053024 | 1386 | |
70e5ed6f | 1387 | dpif_netlink_init_flow_get__(dpif, key, key_len, ufid, terse, &request); |
93451a0a | 1388 | return dpif_netlink_flow_transact(&request, reply, bufp); |
96fba48f BP |
1389 | } |
1390 | ||
70e5ed6f JS |
1391 | static int |
1392 | dpif_netlink_flow_get(const struct dpif_netlink *dpif, | |
1393 | const struct dpif_netlink_flow *flow, | |
1394 | struct dpif_netlink_flow *reply, struct ofpbuf **bufp) | |
1395 | { | |
1396 | return dpif_netlink_flow_get__(dpif, flow->key, flow->key_len, | |
1397 | flow->ufid_present ? &flow->ufid : NULL, | |
1398 | false, reply, bufp); | |
1399 | } | |
1400 | ||
6bc60024 | 1401 | static void |
93451a0a AS |
1402 | dpif_netlink_init_flow_put(struct dpif_netlink *dpif, |
1403 | const struct dpif_flow_put *put, | |
1404 | struct dpif_netlink_flow *request) | |
6bc60024 | 1405 | { |
d64e176c | 1406 | static const struct nlattr dummy_action; |
6bc60024 | 1407 | |
93451a0a | 1408 | dpif_netlink_flow_init(request); |
89625d1e | 1409 | request->cmd = (put->flags & DPIF_FP_CREATE |
6bc60024 BP |
1410 | ? OVS_FLOW_CMD_NEW : OVS_FLOW_CMD_SET); |
1411 | request->dp_ifindex = dpif->dp_ifindex; | |
89625d1e BP |
1412 | request->key = put->key; |
1413 | request->key_len = put->key_len; | |
e6cc0bab AZ |
1414 | request->mask = put->mask; |
1415 | request->mask_len = put->mask_len; | |
70e5ed6f JS |
1416 | dpif_netlink_flow_init_ufid(request, put->ufid, false); |
1417 | ||
6bc60024 | 1418 | /* Ensure that OVS_FLOW_ATTR_ACTIONS will always be included. */ |
d64e176c BP |
1419 | request->actions = (put->actions |
1420 | ? put->actions | |
1421 | : CONST_CAST(struct nlattr *, &dummy_action)); | |
89625d1e BP |
1422 | request->actions_len = put->actions_len; |
1423 | if (put->flags & DPIF_FP_ZERO_STATS) { | |
6bc60024 BP |
1424 | request->clear = true; |
1425 | } | |
43f9ac0a JR |
1426 | if (put->flags & DPIF_FP_PROBE) { |
1427 | request->probe = true; | |
1428 | } | |
89625d1e | 1429 | request->nlmsg_flags = put->flags & DPIF_FP_MODIFY ? 0 : NLM_F_CREATE; |
6bc60024 BP |
1430 | } |
1431 | ||
b99d3cee | 1432 | static void |
70e5ed6f JS |
1433 | dpif_netlink_init_flow_del__(struct dpif_netlink *dpif, |
1434 | const struct nlattr *key, size_t key_len, | |
1435 | const ovs_u128 *ufid, bool terse, | |
1436 | struct dpif_netlink_flow *request) | |
96fba48f | 1437 | { |
93451a0a | 1438 | dpif_netlink_flow_init(request); |
b99d3cee BP |
1439 | request->cmd = OVS_FLOW_CMD_DEL; |
1440 | request->dp_ifindex = dpif->dp_ifindex; | |
70e5ed6f JS |
1441 | request->key = key; |
1442 | request->key_len = key_len; | |
1443 | dpif_netlink_flow_init_ufid(request, ufid, terse); | |
1444 | } | |
1445 | ||
1446 | static void | |
1447 | dpif_netlink_init_flow_del(struct dpif_netlink *dpif, | |
1448 | const struct dpif_flow_del *del, | |
1449 | struct dpif_netlink_flow *request) | |
1450 | { | |
37382aa6 AS |
1451 | dpif_netlink_init_flow_del__(dpif, del->key, del->key_len, |
1452 | del->ufid, del->terse, request); | |
70e5ed6f JS |
1453 | } |
1454 | ||
7e8b7199 PB |
1455 | enum { |
1456 | DUMP_OVS_FLOWS_BIT = 0, | |
1457 | DUMP_OFFLOADED_FLOWS_BIT = 1, | |
1458 | }; | |
1459 | ||
1460 | enum { | |
1461 | DUMP_OVS_FLOWS = (1 << DUMP_OVS_FLOWS_BIT), | |
1462 | DUMP_OFFLOADED_FLOWS = (1 << DUMP_OFFLOADED_FLOWS_BIT), | |
1463 | }; | |
1464 | ||
93451a0a | 1465 | struct dpif_netlink_flow_dump { |
ac64794a BP |
1466 | struct dpif_flow_dump up; |
1467 | struct nl_dump nl_dump; | |
d2ad7ef1 | 1468 | atomic_int status; |
f2280b41 PB |
1469 | struct netdev_flow_dump **netdev_dumps; |
1470 | int netdev_dumps_num; /* Number of netdev_flow_dumps */ | |
1471 | struct ovs_mutex netdev_lock; /* Guards the following. */ | |
1472 | int netdev_current_dump OVS_GUARDED; /* Shared current dump */ | |
7e8b7199 | 1473 | int type; /* Type of dump */ |
e723fd32 JS |
1474 | }; |
1475 | ||
93451a0a AS |
1476 | static struct dpif_netlink_flow_dump * |
1477 | dpif_netlink_flow_dump_cast(struct dpif_flow_dump *dump) | |
e723fd32 | 1478 | { |
93451a0a | 1479 | return CONTAINER_OF(dump, struct dpif_netlink_flow_dump, up); |
e723fd32 JS |
1480 | } |
1481 | ||
f2280b41 PB |
1482 | static void |
1483 | start_netdev_dump(const struct dpif *dpif_, | |
1484 | struct dpif_netlink_flow_dump *dump) | |
1485 | { | |
1486 | ovs_mutex_init(&dump->netdev_lock); | |
1487 | ||
7e8b7199 | 1488 | if (!(dump->type & DUMP_OFFLOADED_FLOWS)) { |
f2280b41 PB |
1489 | dump->netdev_dumps_num = 0; |
1490 | dump->netdev_dumps = NULL; | |
1491 | return; | |
1492 | } | |
1493 | ||
1494 | ovs_mutex_lock(&dump->netdev_lock); | |
1495 | dump->netdev_current_dump = 0; | |
1496 | dump->netdev_dumps | |
dfaf79dd | 1497 | = netdev_ports_flow_dump_create(dpif_->dpif_class, |
f2280b41 PB |
1498 | &dump->netdev_dumps_num); |
1499 | ovs_mutex_unlock(&dump->netdev_lock); | |
1500 | } | |
1501 | ||
7e8b7199 PB |
1502 | static int |
1503 | dpif_netlink_get_dump_type(char *str) { | |
1504 | int type = 0; | |
1505 | ||
1506 | if (!str || !strcmp(str, "ovs") || !strcmp(str, "dpctl")) { | |
1507 | type |= DUMP_OVS_FLOWS; | |
1508 | } | |
1509 | if ((netdev_is_flow_api_enabled() && !str) | |
1510 | || (str && (!strcmp(str, "offloaded") || !strcmp(str, "dpctl")))) { | |
1511 | type |= DUMP_OFFLOADED_FLOWS; | |
1512 | } | |
1513 | ||
1514 | return type; | |
1515 | } | |
1516 | ||
ac64794a | 1517 | static struct dpif_flow_dump * |
7e8b7199 PB |
1518 | dpif_netlink_flow_dump_create(const struct dpif *dpif_, bool terse, |
1519 | char *type) | |
96fba48f | 1520 | { |
93451a0a AS |
1521 | const struct dpif_netlink *dpif = dpif_netlink_cast(dpif_); |
1522 | struct dpif_netlink_flow_dump *dump; | |
1523 | struct dpif_netlink_flow request; | |
37a1300c BP |
1524 | struct ofpbuf *buf; |
1525 | ||
ac64794a BP |
1526 | dump = xmalloc(sizeof *dump); |
1527 | dpif_flow_dump_init(&dump->up, dpif_); | |
37a1300c | 1528 | |
7e8b7199 | 1529 | dump->type = dpif_netlink_get_dump_type(type); |
37a1300c | 1530 | |
7e8b7199 PB |
1531 | if (dump->type & DUMP_OVS_FLOWS) { |
1532 | dpif_netlink_flow_init(&request); | |
1533 | request.cmd = OVS_FLOW_CMD_GET; | |
1534 | request.dp_ifindex = dpif->dp_ifindex; | |
1535 | request.ufid_present = false; | |
1536 | request.ufid_terse = terse; | |
1537 | ||
1538 | buf = ofpbuf_new(1024); | |
1539 | dpif_netlink_flow_to_ofpbuf(&request, buf); | |
1540 | nl_dump_start(&dump->nl_dump, NETLINK_GENERIC, buf); | |
1541 | ofpbuf_delete(buf); | |
1542 | } | |
ac64794a | 1543 | atomic_init(&dump->status, 0); |
64bb477f | 1544 | dump->up.terse = terse; |
30053024 | 1545 | |
f2280b41 PB |
1546 | start_netdev_dump(dpif_, dump); |
1547 | ||
ac64794a | 1548 | return &dump->up; |
704a1e09 BP |
1549 | } |
1550 | ||
1551 | static int | |
93451a0a | 1552 | dpif_netlink_flow_dump_destroy(struct dpif_flow_dump *dump_) |
704a1e09 | 1553 | { |
93451a0a | 1554 | struct dpif_netlink_flow_dump *dump = dpif_netlink_flow_dump_cast(dump_); |
7e8b7199 | 1555 | unsigned int nl_status = 0; |
ac64794a | 1556 | int dump_status; |
96fba48f | 1557 | |
7e8b7199 PB |
1558 | if (dump->type & DUMP_OVS_FLOWS) { |
1559 | nl_status = nl_dump_done(&dump->nl_dump); | |
1560 | } | |
1561 | ||
f2280b41 PB |
1562 | for (int i = 0; i < dump->netdev_dumps_num; i++) { |
1563 | int err = netdev_flow_dump_destroy(dump->netdev_dumps[i]); | |
1564 | ||
1565 | if (err != 0 && err != EOPNOTSUPP) { | |
1566 | VLOG_ERR("failed dumping netdev: %s", ovs_strerror(err)); | |
1567 | } | |
1568 | } | |
1569 | ||
1570 | free(dump->netdev_dumps); | |
1571 | ovs_mutex_destroy(&dump->netdev_lock); | |
1572 | ||
7424fc44 JR |
1573 | /* No other thread has access to 'dump' at this point. */ |
1574 | atomic_read_relaxed(&dump->status, &dump_status); | |
ac64794a BP |
1575 | free(dump); |
1576 | return dump_status ? dump_status : nl_status; | |
1577 | } | |
feebdea2 | 1578 | |
93451a0a | 1579 | struct dpif_netlink_flow_dump_thread { |
ac64794a | 1580 | struct dpif_flow_dump_thread up; |
93451a0a AS |
1581 | struct dpif_netlink_flow_dump *dump; |
1582 | struct dpif_netlink_flow flow; | |
ac64794a BP |
1583 | struct dpif_flow_stats stats; |
1584 | struct ofpbuf nl_flows; /* Always used to store flows. */ | |
1585 | struct ofpbuf *nl_actions; /* Used if kernel does not supply actions. */ | |
f2280b41 PB |
1586 | int netdev_dump_idx; /* This thread current netdev dump index */ |
1587 | bool netdev_done; /* If we are finished dumping netdevs */ | |
1588 | ||
1589 | /* (Key/Mask/Actions) Buffers for netdev dumping */ | |
1590 | struct odputil_keybuf keybuf[FLOW_DUMP_MAX_BATCH]; | |
1591 | struct odputil_keybuf maskbuf[FLOW_DUMP_MAX_BATCH]; | |
1592 | struct odputil_keybuf actbuf[FLOW_DUMP_MAX_BATCH]; | |
ac64794a BP |
1593 | }; |
1594 | ||
93451a0a AS |
1595 | static struct dpif_netlink_flow_dump_thread * |
1596 | dpif_netlink_flow_dump_thread_cast(struct dpif_flow_dump_thread *thread) | |
ac64794a | 1597 | { |
93451a0a | 1598 | return CONTAINER_OF(thread, struct dpif_netlink_flow_dump_thread, up); |
ac64794a BP |
1599 | } |
1600 | ||
1601 | static struct dpif_flow_dump_thread * | |
93451a0a | 1602 | dpif_netlink_flow_dump_thread_create(struct dpif_flow_dump *dump_) |
ac64794a | 1603 | { |
93451a0a AS |
1604 | struct dpif_netlink_flow_dump *dump = dpif_netlink_flow_dump_cast(dump_); |
1605 | struct dpif_netlink_flow_dump_thread *thread; | |
ac64794a BP |
1606 | |
1607 | thread = xmalloc(sizeof *thread); | |
1608 | dpif_flow_dump_thread_init(&thread->up, &dump->up); | |
1609 | thread->dump = dump; | |
1610 | ofpbuf_init(&thread->nl_flows, NL_DUMP_BUFSIZE); | |
1611 | thread->nl_actions = NULL; | |
f2280b41 PB |
1612 | thread->netdev_dump_idx = 0; |
1613 | thread->netdev_done = !(thread->netdev_dump_idx < dump->netdev_dumps_num); | |
ac64794a BP |
1614 | |
1615 | return &thread->up; | |
1616 | } | |
1617 | ||
1618 | static void | |
93451a0a | 1619 | dpif_netlink_flow_dump_thread_destroy(struct dpif_flow_dump_thread *thread_) |
ac64794a | 1620 | { |
93451a0a AS |
1621 | struct dpif_netlink_flow_dump_thread *thread |
1622 | = dpif_netlink_flow_dump_thread_cast(thread_); | |
ac64794a BP |
1623 | |
1624 | ofpbuf_uninit(&thread->nl_flows); | |
1625 | ofpbuf_delete(thread->nl_actions); | |
1626 | free(thread); | |
1627 | } | |
1628 | ||
1629 | static void | |
7af12bd7 | 1630 | dpif_netlink_flow_to_dpif_flow(struct dpif *dpif, struct dpif_flow *dpif_flow, |
7fe98598 | 1631 | const struct dpif_netlink_flow *datapath_flow) |
ac64794a | 1632 | { |
7fe98598 NR |
1633 | dpif_flow->key = datapath_flow->key; |
1634 | dpif_flow->key_len = datapath_flow->key_len; | |
1635 | dpif_flow->mask = datapath_flow->mask; | |
1636 | dpif_flow->mask_len = datapath_flow->mask_len; | |
1637 | dpif_flow->actions = datapath_flow->actions; | |
1638 | dpif_flow->actions_len = datapath_flow->actions_len; | |
70e5ed6f | 1639 | dpif_flow->ufid_present = datapath_flow->ufid_present; |
ec97c2df | 1640 | dpif_flow->pmd_id = PMD_ID_NULL; |
70e5ed6f JS |
1641 | if (datapath_flow->ufid_present) { |
1642 | dpif_flow->ufid = datapath_flow->ufid; | |
1643 | } else { | |
1644 | ovs_assert(datapath_flow->key && datapath_flow->key_len); | |
1645 | dpif_flow_hash(dpif, datapath_flow->key, datapath_flow->key_len, | |
1646 | &dpif_flow->ufid); | |
1647 | } | |
7fe98598 | 1648 | dpif_netlink_flow_get_stats(datapath_flow, &dpif_flow->stats); |
4742003c | 1649 | dpif_flow->offloaded = false; |
ac64794a BP |
1650 | } |
1651 | ||
f2280b41 PB |
1652 | /* The design is such that all threads are working together on the first dump |
1653 | * to the last, in order (at first they all on dump 0). | |
1654 | * When the first thread finds that the given dump is finished, | |
1655 | * they all move to the next. If two or more threads find the same dump | |
1656 | * is finished at the same time, the first one will advance the shared | |
1657 | * netdev_current_dump and the others will catch up. */ | |
1658 | static void | |
1659 | dpif_netlink_advance_netdev_dump(struct dpif_netlink_flow_dump_thread *thread) | |
1660 | { | |
1661 | struct dpif_netlink_flow_dump *dump = thread->dump; | |
1662 | ||
1663 | ovs_mutex_lock(&dump->netdev_lock); | |
1664 | /* if we haven't finished (dumped everything) */ | |
1665 | if (dump->netdev_current_dump < dump->netdev_dumps_num) { | |
1666 | /* if we are the first to find that current dump is finished | |
1667 | * advance it. */ | |
1668 | if (thread->netdev_dump_idx == dump->netdev_current_dump) { | |
1669 | thread->netdev_dump_idx = ++dump->netdev_current_dump; | |
1670 | /* did we just finish the last dump? done. */ | |
1671 | if (dump->netdev_current_dump == dump->netdev_dumps_num) { | |
1672 | thread->netdev_done = true; | |
1673 | } | |
1674 | } else { | |
1675 | /* otherwise, we are behind, catch up */ | |
1676 | thread->netdev_dump_idx = dump->netdev_current_dump; | |
1677 | } | |
1678 | } else { | |
1679 | /* some other thread finished */ | |
1680 | thread->netdev_done = true; | |
1681 | } | |
1682 | ovs_mutex_unlock(&dump->netdev_lock); | |
1683 | } | |
1684 | ||
1685 | static int | |
1686 | dpif_netlink_netdev_match_to_dpif_flow(struct match *match, | |
1687 | struct ofpbuf *key_buf, | |
1688 | struct ofpbuf *mask_buf, | |
1689 | struct nlattr *actions, | |
1690 | struct dpif_flow_stats *stats, | |
1691 | ovs_u128 *ufid, | |
1692 | struct dpif_flow *flow, | |
1693 | bool terse OVS_UNUSED) | |
1694 | { | |
1695 | ||
1696 | struct odp_flow_key_parms odp_parms = { | |
1697 | .flow = &match->flow, | |
1698 | .mask = &match->wc.masks, | |
1699 | .support = { | |
1700 | .max_vlan_headers = 1, | |
1701 | }, | |
1702 | }; | |
1703 | size_t offset; | |
1704 | ||
1705 | memset(flow, 0, sizeof *flow); | |
1706 | ||
1707 | /* Key */ | |
1708 | offset = key_buf->size; | |
1709 | flow->key = ofpbuf_tail(key_buf); | |
1710 | odp_flow_key_from_flow(&odp_parms, key_buf); | |
1711 | flow->key_len = key_buf->size - offset; | |
1712 | ||
1713 | /* Mask */ | |
1714 | offset = mask_buf->size; | |
1715 | flow->mask = ofpbuf_tail(mask_buf); | |
1716 | odp_parms.key_buf = key_buf; | |
1717 | odp_flow_key_from_mask(&odp_parms, mask_buf); | |
1718 | flow->mask_len = mask_buf->size - offset; | |
1719 | ||
1720 | /* Actions */ | |
1721 | flow->actions = nl_attr_get(actions); | |
1722 | flow->actions_len = nl_attr_get_size(actions); | |
1723 | ||
1724 | /* Stats */ | |
1725 | memcpy(&flow->stats, stats, sizeof *stats); | |
1726 | ||
1727 | /* UFID */ | |
1728 | flow->ufid_present = true; | |
1729 | flow->ufid = *ufid; | |
1730 | ||
1731 | flow->pmd_id = PMD_ID_NULL; | |
4742003c PB |
1732 | |
1733 | flow->offloaded = true; | |
1734 | ||
f2280b41 PB |
1735 | return 0; |
1736 | } | |
1737 | ||
ac64794a | 1738 | static int |
93451a0a AS |
1739 | dpif_netlink_flow_dump_next(struct dpif_flow_dump_thread *thread_, |
1740 | struct dpif_flow *flows, int max_flows) | |
ac64794a | 1741 | { |
93451a0a AS |
1742 | struct dpif_netlink_flow_dump_thread *thread |
1743 | = dpif_netlink_flow_dump_thread_cast(thread_); | |
1744 | struct dpif_netlink_flow_dump *dump = thread->dump; | |
1745 | struct dpif_netlink *dpif = dpif_netlink_cast(thread->up.dpif); | |
ac64794a BP |
1746 | int n_flows; |
1747 | ||
1748 | ofpbuf_delete(thread->nl_actions); | |
1749 | thread->nl_actions = NULL; | |
1750 | ||
1751 | n_flows = 0; | |
f2280b41 PB |
1752 | max_flows = MIN(max_flows, FLOW_DUMP_MAX_BATCH); |
1753 | ||
1754 | while (!thread->netdev_done && n_flows < max_flows) { | |
1755 | struct odputil_keybuf *maskbuf = &thread->maskbuf[n_flows]; | |
1756 | struct odputil_keybuf *keybuf = &thread->keybuf[n_flows]; | |
1757 | struct odputil_keybuf *actbuf = &thread->actbuf[n_flows]; | |
1758 | struct ofpbuf key, mask, act; | |
1759 | struct dpif_flow *f = &flows[n_flows]; | |
1760 | int cur = thread->netdev_dump_idx; | |
1761 | struct netdev_flow_dump *netdev_dump = dump->netdev_dumps[cur]; | |
1762 | struct match match; | |
1763 | struct nlattr *actions; | |
1764 | struct dpif_flow_stats stats; | |
1765 | ovs_u128 ufid; | |
1766 | bool has_next; | |
1767 | ||
1768 | ofpbuf_use_stack(&key, keybuf, sizeof *keybuf); | |
1769 | ofpbuf_use_stack(&act, actbuf, sizeof *actbuf); | |
1770 | ofpbuf_use_stack(&mask, maskbuf, sizeof *maskbuf); | |
1771 | has_next = netdev_flow_dump_next(netdev_dump, &match, | |
1772 | &actions, &stats, | |
1773 | &ufid, | |
1774 | &thread->nl_flows, | |
1775 | &act); | |
1776 | if (has_next) { | |
1777 | dpif_netlink_netdev_match_to_dpif_flow(&match, | |
1778 | &key, &mask, | |
1779 | actions, | |
1780 | &stats, | |
1781 | &ufid, | |
1782 | f, | |
1783 | dump->up.terse); | |
1784 | n_flows++; | |
1785 | } else { | |
1786 | dpif_netlink_advance_netdev_dump(thread); | |
1787 | } | |
1788 | } | |
1789 | ||
7e8b7199 PB |
1790 | if (!(dump->type & DUMP_OVS_FLOWS)) { |
1791 | return n_flows; | |
1792 | } | |
1793 | ||
ac64794a | 1794 | while (!n_flows |
6fd6ed71 | 1795 | || (n_flows < max_flows && thread->nl_flows.size)) { |
7fe98598 | 1796 | struct dpif_netlink_flow datapath_flow; |
ac64794a BP |
1797 | struct ofpbuf nl_flow; |
1798 | int error; | |
1799 | ||
1800 | /* Try to grab another flow. */ | |
1801 | if (!nl_dump_next(&dump->nl_dump, &nl_flow, &thread->nl_flows)) { | |
1802 | break; | |
feebdea2 | 1803 | } |
30053024 | 1804 | |
ac64794a | 1805 | /* Convert the flow to our output format. */ |
7fe98598 | 1806 | error = dpif_netlink_flow_from_ofpbuf(&datapath_flow, &nl_flow); |
30053024 | 1807 | if (error) { |
7424fc44 | 1808 | atomic_store_relaxed(&dump->status, error); |
ac64794a | 1809 | break; |
feebdea2 | 1810 | } |
30053024 | 1811 | |
64bb477f JS |
1812 | if (dump->up.terse || datapath_flow.actions) { |
1813 | /* Common case: we don't want actions, or the flow includes | |
1814 | * actions. */ | |
7af12bd7 JS |
1815 | dpif_netlink_flow_to_dpif_flow(&dpif->dpif, &flows[n_flows++], |
1816 | &datapath_flow); | |
ac64794a BP |
1817 | } else { |
1818 | /* Rare case: the flow does not include actions. Retrieve this | |
1819 | * individual flow again to get the actions. */ | |
70e5ed6f | 1820 | error = dpif_netlink_flow_get(dpif, &datapath_flow, |
7fe98598 | 1821 | &datapath_flow, &thread->nl_actions); |
30053024 BP |
1822 | if (error == ENOENT) { |
1823 | VLOG_DBG("dumped flow disappeared on get"); | |
ac64794a | 1824 | continue; |
30053024 | 1825 | } else if (error) { |
10a89ef0 BP |
1826 | VLOG_WARN("error fetching dumped flow: %s", |
1827 | ovs_strerror(error)); | |
7424fc44 | 1828 | atomic_store_relaxed(&dump->status, error); |
ac64794a | 1829 | break; |
30053024 | 1830 | } |
30053024 | 1831 | |
ac64794a BP |
1832 | /* Save this flow. Then exit, because we only have one buffer to |
1833 | * handle this case. */ | |
7af12bd7 JS |
1834 | dpif_netlink_flow_to_dpif_flow(&dpif->dpif, &flows[n_flows++], |
1835 | &datapath_flow); | |
ac64794a BP |
1836 | break; |
1837 | } | |
feebdea2 | 1838 | } |
ac64794a | 1839 | return n_flows; |
96fba48f BP |
1840 | } |
1841 | ||
eabe7c68 | 1842 | static void |
93451a0a AS |
1843 | dpif_netlink_encode_execute(int dp_ifindex, const struct dpif_execute *d_exec, |
1844 | struct ofpbuf *buf) | |
96fba48f | 1845 | { |
89625d1e | 1846 | struct ovs_header *k_exec; |
758c456d | 1847 | size_t key_ofs; |
f7cd0081 | 1848 | |
eabe7c68 | 1849 | ofpbuf_prealloc_tailroom(buf, (64 |
cf62fa4c | 1850 | + dp_packet_size(d_exec->packet) |
758c456d | 1851 | + ODP_KEY_METADATA_SIZE |
eabe7c68 | 1852 | + d_exec->actions_len)); |
f7cd0081 | 1853 | |
df2c07f4 | 1854 | nl_msg_put_genlmsghdr(buf, 0, ovs_packet_family, NLM_F_REQUEST, |
69685a88 | 1855 | OVS_PACKET_CMD_EXECUTE, OVS_PACKET_VERSION); |
f7cd0081 | 1856 | |
89625d1e BP |
1857 | k_exec = ofpbuf_put_uninit(buf, sizeof *k_exec); |
1858 | k_exec->dp_ifindex = dp_ifindex; | |
f7cd0081 | 1859 | |
89625d1e | 1860 | nl_msg_put_unspec(buf, OVS_PACKET_ATTR_PACKET, |
cf62fa4c PS |
1861 | dp_packet_data(d_exec->packet), |
1862 | dp_packet_size(d_exec->packet)); | |
758c456d JR |
1863 | |
1864 | key_ofs = nl_msg_start_nested(buf, OVS_PACKET_ATTR_KEY); | |
beb75a40 | 1865 | odp_key_from_dp_packet(buf, d_exec->packet); |
758c456d JR |
1866 | nl_msg_end_nested(buf, key_ofs); |
1867 | ||
89625d1e BP |
1868 | nl_msg_put_unspec(buf, OVS_PACKET_ATTR_ACTIONS, |
1869 | d_exec->actions, d_exec->actions_len); | |
43f9ac0a | 1870 | if (d_exec->probe) { |
2e460098 | 1871 | nl_msg_put_flag(buf, OVS_PACKET_ATTR_PROBE); |
43f9ac0a | 1872 | } |
27130224 AZ |
1873 | if (d_exec->mtu) { |
1874 | nl_msg_put_u16(buf, OVS_PACKET_ATTR_MRU, d_exec->mtu); | |
1875 | } | |
6bc60024 BP |
1876 | } |
1877 | ||
0f3358ea BP |
1878 | /* Executes, against 'dpif', up to the first 'n_ops' operations in 'ops'. |
1879 | * Returns the number actually executed (at least 1, if 'n_ops' is | |
1880 | * positive). */ | |
1881 | static size_t | |
93451a0a AS |
1882 | dpif_netlink_operate__(struct dpif_netlink *dpif, |
1883 | struct dpif_op **ops, size_t n_ops) | |
6bc60024 | 1884 | { |
eabe7c68 BP |
1885 | struct op_auxdata { |
1886 | struct nl_transaction txn; | |
72d32ac0 | 1887 | |
eabe7c68 BP |
1888 | struct ofpbuf request; |
1889 | uint64_t request_stub[1024 / 8]; | |
72d32ac0 BP |
1890 | |
1891 | struct ofpbuf reply; | |
1892 | uint64_t reply_stub[1024 / 8]; | |
8b668ee3 | 1893 | } auxes[OPERATE_MAX_OPS]; |
eabe7c68 | 1894 | |
8b668ee3 | 1895 | struct nl_transaction *txnsp[OPERATE_MAX_OPS]; |
6bc60024 BP |
1896 | size_t i; |
1897 | ||
8b668ee3 | 1898 | n_ops = MIN(n_ops, OPERATE_MAX_OPS); |
6bc60024 | 1899 | for (i = 0; i < n_ops; i++) { |
eabe7c68 | 1900 | struct op_auxdata *aux = &auxes[i]; |
c2b565b5 | 1901 | struct dpif_op *op = ops[i]; |
b99d3cee BP |
1902 | struct dpif_flow_put *put; |
1903 | struct dpif_flow_del *del; | |
6fe09f8c | 1904 | struct dpif_flow_get *get; |
93451a0a | 1905 | struct dpif_netlink_flow flow; |
eabe7c68 BP |
1906 | |
1907 | ofpbuf_use_stub(&aux->request, | |
1908 | aux->request_stub, sizeof aux->request_stub); | |
1909 | aux->txn.request = &aux->request; | |
b99d3cee | 1910 | |
72d32ac0 BP |
1911 | ofpbuf_use_stub(&aux->reply, aux->reply_stub, sizeof aux->reply_stub); |
1912 | aux->txn.reply = NULL; | |
1913 | ||
b99d3cee BP |
1914 | switch (op->type) { |
1915 | case DPIF_OP_FLOW_PUT: | |
1916 | put = &op->u.flow_put; | |
93451a0a | 1917 | dpif_netlink_init_flow_put(dpif, put, &flow); |
6bc60024 | 1918 | if (put->stats) { |
eabe7c68 | 1919 | flow.nlmsg_flags |= NLM_F_ECHO; |
72d32ac0 | 1920 | aux->txn.reply = &aux->reply; |
6bc60024 | 1921 | } |
93451a0a | 1922 | dpif_netlink_flow_to_ofpbuf(&flow, &aux->request); |
b99d3cee BP |
1923 | break; |
1924 | ||
1925 | case DPIF_OP_FLOW_DEL: | |
1926 | del = &op->u.flow_del; | |
93451a0a | 1927 | dpif_netlink_init_flow_del(dpif, del, &flow); |
b99d3cee | 1928 | if (del->stats) { |
eabe7c68 | 1929 | flow.nlmsg_flags |= NLM_F_ECHO; |
72d32ac0 | 1930 | aux->txn.reply = &aux->reply; |
b99d3cee | 1931 | } |
93451a0a | 1932 | dpif_netlink_flow_to_ofpbuf(&flow, &aux->request); |
b99d3cee | 1933 | break; |
6bc60024 | 1934 | |
b99d3cee | 1935 | case DPIF_OP_EXECUTE: |
0f3358ea BP |
1936 | /* Can't execute a packet that won't fit in a Netlink attribute. */ |
1937 | if (OVS_UNLIKELY(nl_attr_oversized( | |
cf62fa4c | 1938 | dp_packet_size(op->u.execute.packet)))) { |
0f3358ea BP |
1939 | /* Report an error immediately if this is the first operation. |
1940 | * Otherwise the easiest thing to do is to postpone to the next | |
1941 | * call (when this will be the first operation). */ | |
1942 | if (i == 0) { | |
1943 | VLOG_ERR_RL(&error_rl, | |
1944 | "dropping oversized %"PRIu32"-byte packet", | |
cf62fa4c | 1945 | dp_packet_size(op->u.execute.packet)); |
0f3358ea BP |
1946 | op->error = ENOBUFS; |
1947 | return 1; | |
1948 | } | |
1949 | n_ops = i; | |
1950 | } else { | |
1951 | dpif_netlink_encode_execute(dpif->dp_ifindex, &op->u.execute, | |
1952 | &aux->request); | |
1953 | } | |
b99d3cee BP |
1954 | break; |
1955 | ||
6fe09f8c JS |
1956 | case DPIF_OP_FLOW_GET: |
1957 | get = &op->u.flow_get; | |
70e5ed6f | 1958 | dpif_netlink_init_flow_get(dpif, get, &flow); |
6fe09f8c | 1959 | aux->txn.reply = get->buffer; |
93451a0a | 1960 | dpif_netlink_flow_to_ofpbuf(&flow, &aux->request); |
6fe09f8c JS |
1961 | break; |
1962 | ||
b99d3cee | 1963 | default: |
428b2edd | 1964 | OVS_NOT_REACHED(); |
6bc60024 BP |
1965 | } |
1966 | } | |
1967 | ||
6bc60024 | 1968 | for (i = 0; i < n_ops; i++) { |
eabe7c68 | 1969 | txnsp[i] = &auxes[i].txn; |
6bc60024 | 1970 | } |
a88b4e04 | 1971 | nl_transact_multiple(NETLINK_GENERIC, txnsp, n_ops); |
6bc60024 | 1972 | |
6bc60024 | 1973 | for (i = 0; i < n_ops; i++) { |
72d32ac0 | 1974 | struct op_auxdata *aux = &auxes[i]; |
eabe7c68 | 1975 | struct nl_transaction *txn = &auxes[i].txn; |
c2b565b5 | 1976 | struct dpif_op *op = ops[i]; |
b99d3cee BP |
1977 | struct dpif_flow_put *put; |
1978 | struct dpif_flow_del *del; | |
6fe09f8c | 1979 | struct dpif_flow_get *get; |
6bc60024 | 1980 | |
b99d3cee | 1981 | op->error = txn->error; |
6bc60024 | 1982 | |
b99d3cee BP |
1983 | switch (op->type) { |
1984 | case DPIF_OP_FLOW_PUT: | |
1985 | put = &op->u.flow_put; | |
cfceb2b5 | 1986 | if (put->stats) { |
b99d3cee | 1987 | if (!op->error) { |
93451a0a | 1988 | struct dpif_netlink_flow reply; |
cfceb2b5 | 1989 | |
93451a0a AS |
1990 | op->error = dpif_netlink_flow_from_ofpbuf(&reply, |
1991 | txn->reply); | |
cfceb2b5 | 1992 | if (!op->error) { |
93451a0a | 1993 | dpif_netlink_flow_get_stats(&reply, put->stats); |
cfceb2b5 BP |
1994 | } |
1995 | } | |
6bc60024 | 1996 | } |
b99d3cee BP |
1997 | break; |
1998 | ||
1999 | case DPIF_OP_FLOW_DEL: | |
2000 | del = &op->u.flow_del; | |
cfceb2b5 | 2001 | if (del->stats) { |
b99d3cee | 2002 | if (!op->error) { |
93451a0a | 2003 | struct dpif_netlink_flow reply; |
cfceb2b5 | 2004 | |
93451a0a AS |
2005 | op->error = dpif_netlink_flow_from_ofpbuf(&reply, |
2006 | txn->reply); | |
cfceb2b5 | 2007 | if (!op->error) { |
93451a0a | 2008 | dpif_netlink_flow_get_stats(&reply, del->stats); |
cfceb2b5 BP |
2009 | } |
2010 | } | |
b99d3cee BP |
2011 | } |
2012 | break; | |
2013 | ||
2014 | case DPIF_OP_EXECUTE: | |
2015 | break; | |
2016 | ||
6fe09f8c JS |
2017 | case DPIF_OP_FLOW_GET: |
2018 | get = &op->u.flow_get; | |
2019 | if (!op->error) { | |
93451a0a | 2020 | struct dpif_netlink_flow reply; |
6fe09f8c | 2021 | |
93451a0a | 2022 | op->error = dpif_netlink_flow_from_ofpbuf(&reply, txn->reply); |
6fe09f8c | 2023 | if (!op->error) { |
7af12bd7 JS |
2024 | dpif_netlink_flow_to_dpif_flow(&dpif->dpif, get->flow, |
2025 | &reply); | |
6fe09f8c JS |
2026 | } |
2027 | } | |
2028 | break; | |
2029 | ||
b99d3cee | 2030 | default: |
428b2edd | 2031 | OVS_NOT_REACHED(); |
6bc60024 BP |
2032 | } |
2033 | ||
72d32ac0 BP |
2034 | ofpbuf_uninit(&aux->request); |
2035 | ofpbuf_uninit(&aux->reply); | |
6bc60024 | 2036 | } |
0f3358ea BP |
2037 | |
2038 | return n_ops; | |
eabe7c68 BP |
2039 | } |
2040 | ||
6c343984 PB |
2041 | static int |
2042 | parse_flow_get(struct dpif_netlink *dpif, struct dpif_flow_get *get) | |
2043 | { | |
2044 | struct dpif_flow *dpif_flow = get->flow; | |
2045 | struct match match; | |
2046 | struct nlattr *actions; | |
2047 | struct dpif_flow_stats stats; | |
2048 | struct ofpbuf buf; | |
2049 | uint64_t act_buf[1024 / 8]; | |
2050 | struct odputil_keybuf maskbuf; | |
2051 | struct odputil_keybuf keybuf; | |
2052 | struct odputil_keybuf actbuf; | |
2053 | struct ofpbuf key, mask, act; | |
2054 | int err; | |
2055 | ||
2056 | ofpbuf_use_stack(&buf, &act_buf, sizeof act_buf); | |
dfaf79dd | 2057 | err = netdev_ports_flow_get(dpif->dpif.dpif_class, &match, |
6c343984 PB |
2058 | &actions, get->ufid, &stats, &buf); |
2059 | if (err) { | |
2060 | return err; | |
2061 | } | |
2062 | ||
2063 | VLOG_DBG("found flow from netdev, translating to dpif flow"); | |
2064 | ||
2065 | ofpbuf_use_stack(&key, &keybuf, sizeof keybuf); | |
2066 | ofpbuf_use_stack(&act, &actbuf, sizeof actbuf); | |
2067 | ofpbuf_use_stack(&mask, &maskbuf, sizeof maskbuf); | |
2068 | dpif_netlink_netdev_match_to_dpif_flow(&match, &key, &mask, actions, | |
2069 | &stats, | |
2070 | (ovs_u128 *) get->ufid, | |
2071 | dpif_flow, | |
2072 | false); | |
2073 | ofpbuf_put(get->buffer, nl_attr_get(actions), nl_attr_get_size(actions)); | |
2074 | dpif_flow->actions = ofpbuf_at(get->buffer, 0, 0); | |
2075 | dpif_flow->actions_len = nl_attr_get_size(actions); | |
2076 | ||
2077 | return 0; | |
2078 | } | |
2079 | ||
8b668ee3 PB |
2080 | static int |
2081 | parse_flow_put(struct dpif_netlink *dpif, struct dpif_flow_put *put) | |
2082 | { | |
2083 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 20); | |
dfaf79dd | 2084 | const struct dpif_class *dpif_class = dpif->dpif.dpif_class; |
8b668ee3 PB |
2085 | struct match match; |
2086 | odp_port_t in_port; | |
2087 | const struct nlattr *nla; | |
2088 | size_t left; | |
8b668ee3 PB |
2089 | struct netdev *dev; |
2090 | struct offload_info info; | |
2091 | ovs_be16 dst_port = 0; | |
2092 | int err; | |
2093 | ||
2094 | if (put->flags & DPIF_FP_PROBE) { | |
2095 | return EOPNOTSUPP; | |
2096 | } | |
2097 | ||
2098 | err = parse_key_and_mask_to_match(put->key, put->key_len, put->mask, | |
2099 | put->mask_len, &match); | |
2100 | if (err) { | |
2101 | return err; | |
2102 | } | |
2103 | ||
2104 | /* When we try to install a dummy flow from a probed feature. */ | |
2105 | if (match.flow.dl_type == htons(0x1234)) { | |
2106 | return EOPNOTSUPP; | |
2107 | } | |
2108 | ||
2109 | in_port = match.flow.in_port.odp_port; | |
dfaf79dd | 2110 | dev = netdev_ports_get(in_port, dpif_class); |
8b668ee3 PB |
2111 | if (!dev) { |
2112 | return EOPNOTSUPP; | |
2113 | } | |
2114 | ||
00a0a011 | 2115 | /* Get tunnel dst port */ |
8b668ee3 PB |
2116 | NL_ATTR_FOR_EACH(nla, left, put->actions, put->actions_len) { |
2117 | if (nl_attr_type(nla) == OVS_ACTION_ATTR_OUTPUT) { | |
2118 | const struct netdev_tunnel_config *tnl_cfg; | |
2119 | struct netdev *outdev; | |
2120 | odp_port_t out_port; | |
2121 | ||
8b668ee3 | 2122 | out_port = nl_attr_get_odp_port(nla); |
dfaf79dd | 2123 | outdev = netdev_ports_get(out_port, dpif_class); |
8b668ee3 PB |
2124 | if (!outdev) { |
2125 | err = EOPNOTSUPP; | |
2126 | goto out; | |
2127 | } | |
2128 | tnl_cfg = netdev_get_tunnel_config(outdev); | |
2129 | if (tnl_cfg && tnl_cfg->dst_port != 0) { | |
2130 | dst_port = tnl_cfg->dst_port; | |
2131 | } | |
2132 | netdev_close(outdev); | |
2133 | } | |
2134 | } | |
2135 | ||
dfaf79dd | 2136 | info.dpif_class = dpif_class; |
8b668ee3 PB |
2137 | info.tp_dst_port = dst_port; |
2138 | err = netdev_flow_put(dev, &match, | |
2139 | CONST_CAST(struct nlattr *, put->actions), | |
2140 | put->actions_len, | |
2141 | CONST_CAST(ovs_u128 *, put->ufid), | |
2142 | &info, put->stats); | |
2143 | ||
2144 | if (!err) { | |
2145 | if (put->flags & DPIF_FP_MODIFY) { | |
2146 | struct dpif_op *opp; | |
2147 | struct dpif_op op; | |
2148 | ||
2149 | op.type = DPIF_OP_FLOW_DEL; | |
2150 | op.u.flow_del.key = put->key; | |
2151 | op.u.flow_del.key_len = put->key_len; | |
2152 | op.u.flow_del.ufid = put->ufid; | |
2153 | op.u.flow_del.pmd_id = put->pmd_id; | |
2154 | op.u.flow_del.stats = NULL; | |
2155 | op.u.flow_del.terse = false; | |
2156 | ||
2157 | opp = &op; | |
2158 | dpif_netlink_operate__(dpif, &opp, 1); | |
2159 | } | |
2160 | ||
2161 | VLOG_DBG("added flow"); | |
2162 | } else if (err != EEXIST) { | |
2163 | VLOG_ERR_RL(&rl, "failed to offload flow: %s", ovs_strerror(err)); | |
2164 | } | |
2165 | ||
2166 | out: | |
2167 | if (err && err != EEXIST && (put->flags & DPIF_FP_MODIFY)) { | |
2168 | /* Modified rule can't be offloaded, try and delete from HW */ | |
2169 | int del_err = netdev_flow_del(dev, put->ufid, put->stats); | |
2170 | ||
2171 | if (!del_err) { | |
2172 | /* Delete from hw success, so old flow was offloaded. | |
2173 | * Change flags to create the flow in kernel */ | |
2174 | put->flags &= ~DPIF_FP_MODIFY; | |
2175 | put->flags |= DPIF_FP_CREATE; | |
2176 | } else if (del_err != ENOENT) { | |
2177 | VLOG_ERR_RL(&rl, "failed to delete offloaded flow: %s", | |
2178 | ovs_strerror(del_err)); | |
2179 | /* stop proccesing the flow in kernel */ | |
2180 | err = 0; | |
2181 | } | |
2182 | } | |
2183 | ||
2184 | netdev_close(dev); | |
2185 | ||
2186 | return err; | |
2187 | } | |
2188 | ||
8b668ee3 PB |
2189 | static int |
2190 | try_send_to_netdev(struct dpif_netlink *dpif, struct dpif_op *op) | |
eabe7c68 | 2191 | { |
8b668ee3 | 2192 | int err = EOPNOTSUPP; |
9b00386b | 2193 | |
8b668ee3 PB |
2194 | switch (op->type) { |
2195 | case DPIF_OP_FLOW_PUT: { | |
2196 | struct dpif_flow_put *put = &op->u.flow_put; | |
2197 | ||
2198 | if (!put->ufid) { | |
2199 | break; | |
2200 | } | |
3cd99886 RD |
2201 | |
2202 | log_flow_put_message(&dpif->dpif, &this_module, put, 0); | |
8b668ee3 PB |
2203 | err = parse_flow_put(dpif, put); |
2204 | break; | |
2205 | } | |
0335a89c PB |
2206 | case DPIF_OP_FLOW_DEL: { |
2207 | struct dpif_flow_del *del = &op->u.flow_del; | |
2208 | ||
2209 | if (!del->ufid) { | |
2210 | break; | |
2211 | } | |
3cd99886 RD |
2212 | |
2213 | log_flow_del_message(&dpif->dpif, &this_module, del, 0); | |
dfaf79dd | 2214 | err = netdev_ports_flow_del(dpif->dpif.dpif_class, del->ufid, |
0335a89c PB |
2215 | del->stats); |
2216 | break; | |
2217 | } | |
6c343984 PB |
2218 | case DPIF_OP_FLOW_GET: { |
2219 | struct dpif_flow_get *get = &op->u.flow_get; | |
2220 | ||
2221 | if (!op->u.flow_get.ufid) { | |
2222 | break; | |
2223 | } | |
3cd99886 RD |
2224 | |
2225 | log_flow_get_message(&dpif->dpif, &this_module, get, 0); | |
6c343984 PB |
2226 | err = parse_flow_get(dpif, get); |
2227 | break; | |
2228 | } | |
8b668ee3 PB |
2229 | case DPIF_OP_EXECUTE: |
2230 | default: | |
2231 | break; | |
2232 | } | |
2233 | ||
2234 | return err; | |
2235 | } | |
2236 | ||
2237 | static void | |
2238 | dpif_netlink_operate_chunks(struct dpif_netlink *dpif, struct dpif_op **ops, | |
2239 | size_t n_ops) | |
2240 | { | |
eabe7c68 | 2241 | while (n_ops > 0) { |
0f3358ea | 2242 | size_t chunk = dpif_netlink_operate__(dpif, ops, n_ops); |
8b668ee3 | 2243 | |
eabe7c68 BP |
2244 | ops += chunk; |
2245 | n_ops -= chunk; | |
2246 | } | |
6bc60024 BP |
2247 | } |
2248 | ||
8b668ee3 PB |
2249 | static void |
2250 | dpif_netlink_operate(struct dpif *dpif_, struct dpif_op **ops, size_t n_ops) | |
2251 | { | |
2252 | struct dpif_netlink *dpif = dpif_netlink_cast(dpif_); | |
2253 | struct dpif_op *new_ops[OPERATE_MAX_OPS]; | |
2254 | int count = 0; | |
2255 | int i = 0; | |
2256 | int err = 0; | |
2257 | ||
2258 | if (netdev_is_flow_api_enabled()) { | |
2259 | while (n_ops > 0) { | |
2260 | count = 0; | |
2261 | ||
2262 | while (n_ops > 0 && count < OPERATE_MAX_OPS) { | |
2263 | struct dpif_op *op = ops[i++]; | |
2264 | ||
2265 | err = try_send_to_netdev(dpif, op); | |
2266 | if (err && err != EEXIST) { | |
2267 | new_ops[count++] = op; | |
2268 | } else { | |
2269 | op->error = err; | |
2270 | } | |
2271 | ||
2272 | n_ops--; | |
2273 | } | |
2274 | ||
2275 | dpif_netlink_operate_chunks(dpif, new_ops, count); | |
2276 | } | |
2277 | } else { | |
2278 | dpif_netlink_operate_chunks(dpif, ops, n_ops); | |
2279 | } | |
2280 | } | |
2281 | ||
09cac43f NR |
2282 | #if _WIN32 |
2283 | static void | |
2284 | dpif_netlink_handler_uninit(struct dpif_handler *handler) | |
2285 | { | |
2286 | vport_delete_sock_pool(handler); | |
2287 | } | |
2288 | ||
2289 | static int | |
2290 | dpif_netlink_handler_init(struct dpif_handler *handler) | |
2291 | { | |
2292 | return vport_create_sock_pool(handler); | |
2293 | } | |
2294 | #else | |
2295 | ||
2296 | static int | |
2297 | dpif_netlink_handler_init(struct dpif_handler *handler) | |
2298 | { | |
2299 | handler->epoll_fd = epoll_create(10); | |
2300 | return handler->epoll_fd < 0 ? errno : 0; | |
2301 | } | |
2302 | ||
2303 | static void | |
2304 | dpif_netlink_handler_uninit(struct dpif_handler *handler) | |
2305 | { | |
2306 | close(handler->epoll_fd); | |
2307 | } | |
2308 | #endif | |
2309 | ||
1579cf67 AW |
2310 | /* Synchronizes 'channels' in 'dpif->handlers' with the set of vports |
2311 | * currently in 'dpif' in the kernel, by adding a new set of channels for | |
2312 | * any kernel vport that lacks one and deleting any channels that have no | |
2313 | * backing kernel vports. */ | |
96fba48f | 2314 | static int |
93451a0a | 2315 | dpif_netlink_refresh_channels(struct dpif_netlink *dpif, uint32_t n_handlers) |
b90de034 | 2316 | OVS_REQ_WRLOCK(dpif->upcall_lock) |
96fba48f | 2317 | { |
8381a3d3 | 2318 | unsigned long int *keep_channels; |
93451a0a | 2319 | struct dpif_netlink_vport vport; |
8381a3d3 BP |
2320 | size_t keep_channels_nbits; |
2321 | struct nl_dump dump; | |
d57695d7 JS |
2322 | uint64_t reply_stub[NL_DUMP_BUFSIZE / 8]; |
2323 | struct ofpbuf buf; | |
8381a3d3 BP |
2324 | int retval = 0; |
2325 | size_t i; | |
982b8810 | 2326 | |
09cac43f NR |
2327 | ovs_assert(!WINDOWS || n_handlers <= 1); |
2328 | ovs_assert(!WINDOWS || dpif->n_handlers <= 1); | |
2329 | ||
1579cf67 AW |
2330 | if (dpif->n_handlers != n_handlers) { |
2331 | destroy_all_channels(dpif); | |
2332 | dpif->handlers = xzalloc(n_handlers * sizeof *dpif->handlers); | |
2333 | for (i = 0; i < n_handlers; i++) { | |
09cac43f | 2334 | int error; |
1579cf67 AW |
2335 | struct dpif_handler *handler = &dpif->handlers[i]; |
2336 | ||
09cac43f NR |
2337 | error = dpif_netlink_handler_init(handler); |
2338 | if (error) { | |
1579cf67 AW |
2339 | size_t j; |
2340 | ||
2341 | for (j = 0; j < i; j++) { | |
aa5c0216 | 2342 | struct dpif_handler *tmp = &dpif->handlers[j]; |
09cac43f | 2343 | dpif_netlink_handler_uninit(tmp); |
1579cf67 AW |
2344 | } |
2345 | free(dpif->handlers); | |
2346 | dpif->handlers = NULL; | |
2347 | ||
09cac43f | 2348 | return error; |
1579cf67 | 2349 | } |
8381a3d3 | 2350 | } |
1579cf67 AW |
2351 | dpif->n_handlers = n_handlers; |
2352 | } | |
2353 | ||
2354 | for (i = 0; i < n_handlers; i++) { | |
2355 | struct dpif_handler *handler = &dpif->handlers[i]; | |
2356 | ||
2357 | handler->event_offset = handler->n_events = 0; | |
17411ecf | 2358 | } |
b063d9f0 | 2359 | |
8381a3d3 BP |
2360 | keep_channels_nbits = dpif->uc_array_size; |
2361 | keep_channels = bitmap_allocate(keep_channels_nbits); | |
982b8810 | 2362 | |
d57695d7 | 2363 | ofpbuf_use_stub(&buf, reply_stub, sizeof reply_stub); |
93451a0a AS |
2364 | dpif_netlink_port_dump_start__(dpif, &dump); |
2365 | while (!dpif_netlink_port_dump_next__(dpif, &dump, &vport, &buf)) { | |
8381a3d3 | 2366 | uint32_t port_no = odp_to_u32(vport.port_no); |
1579cf67 | 2367 | uint32_t *upcall_pids = NULL; |
8381a3d3 | 2368 | int error; |
50f80534 | 2369 | |
1579cf67 AW |
2370 | if (port_no >= dpif->uc_array_size |
2371 | || !vport_get_pids(dpif, port_no, &upcall_pids)) { | |
09cac43f | 2372 | struct nl_sock **socksp = vport_create_socksp(dpif, &error); |
1579cf67 AW |
2373 | |
2374 | if (!socksp) { | |
2375 | goto error; | |
2376 | } | |
2377 | ||
2378 | error = vport_add_channels(dpif, vport.port_no, socksp); | |
b063d9f0 | 2379 | if (error) { |
1579cf67 | 2380 | VLOG_INFO("%s: could not add channels for port %s", |
9b00386b | 2381 | dpif_name(&dpif->dpif), vport.name); |
09cac43f | 2382 | vport_del_socksp(dpif, socksp); |
8381a3d3 BP |
2383 | retval = error; |
2384 | goto error; | |
982b8810 | 2385 | } |
1579cf67 AW |
2386 | upcall_pids = vport_socksp_to_pids(socksp, dpif->n_handlers); |
2387 | free(socksp); | |
8381a3d3 | 2388 | } |
50f80534 | 2389 | |
8381a3d3 | 2390 | /* Configure the vport to deliver misses to 'sock'. */ |
1579cf67 AW |
2391 | if (vport.upcall_pids[0] == 0 |
2392 | || vport.n_upcall_pids != dpif->n_handlers | |
2393 | || memcmp(upcall_pids, vport.upcall_pids, n_handlers * sizeof | |
2394 | *upcall_pids)) { | |
93451a0a | 2395 | struct dpif_netlink_vport vport_request; |
989fd548 | 2396 | |
93451a0a | 2397 | dpif_netlink_vport_init(&vport_request); |
989fd548 JP |
2398 | vport_request.cmd = OVS_VPORT_CMD_SET; |
2399 | vport_request.dp_ifindex = dpif->dp_ifindex; | |
8381a3d3 | 2400 | vport_request.port_no = vport.port_no; |
1579cf67 AW |
2401 | vport_request.n_upcall_pids = dpif->n_handlers; |
2402 | vport_request.upcall_pids = upcall_pids; | |
93451a0a | 2403 | error = dpif_netlink_vport_transact(&vport_request, NULL, NULL); |
1579cf67 | 2404 | if (error) { |
989fd548 JP |
2405 | VLOG_WARN_RL(&error_rl, |
2406 | "%s: failed to set upcall pid on port: %s", | |
10a89ef0 | 2407 | dpif_name(&dpif->dpif), ovs_strerror(error)); |
989fd548 | 2408 | |
8381a3d3 BP |
2409 | if (error != ENODEV && error != ENOENT) { |
2410 | retval = error; | |
989fd548 | 2411 | } else { |
8381a3d3 BP |
2412 | /* The vport isn't really there, even though the dump says |
2413 | * it is. Probably we just hit a race after a port | |
2414 | * disappeared. */ | |
989fd548 | 2415 | } |
8381a3d3 | 2416 | goto error; |
50f80534 | 2417 | } |
8381a3d3 | 2418 | } |
14b4d2f9 | 2419 | |
8381a3d3 BP |
2420 | if (port_no < keep_channels_nbits) { |
2421 | bitmap_set1(keep_channels, port_no); | |
2422 | } | |
1579cf67 | 2423 | free(upcall_pids); |
8381a3d3 BP |
2424 | continue; |
2425 | ||
2426 | error: | |
1579cf67 AW |
2427 | free(upcall_pids); |
2428 | vport_del_channels(dpif, vport.port_no); | |
982b8810 | 2429 | } |
8381a3d3 | 2430 | nl_dump_done(&dump); |
d57695d7 | 2431 | ofpbuf_uninit(&buf); |
b063d9f0 | 2432 | |
8381a3d3 BP |
2433 | /* Discard any saved channels that we didn't reuse. */ |
2434 | for (i = 0; i < keep_channels_nbits; i++) { | |
2435 | if (!bitmap_is_set(keep_channels, i)) { | |
1579cf67 | 2436 | vport_del_channels(dpif, u32_to_odp(i)); |
8381a3d3 BP |
2437 | } |
2438 | } | |
2439 | free(keep_channels); | |
2440 | ||
2441 | return retval; | |
2442 | } | |
2443 | ||
2444 | static int | |
93451a0a | 2445 | dpif_netlink_recv_set__(struct dpif_netlink *dpif, bool enable) |
b90de034 | 2446 | OVS_REQ_WRLOCK(dpif->upcall_lock) |
8381a3d3 | 2447 | { |
1579cf67 | 2448 | if ((dpif->handlers != NULL) == enable) { |
8381a3d3 BP |
2449 | return 0; |
2450 | } else if (!enable) { | |
1579cf67 | 2451 | destroy_all_channels(dpif); |
8381a3d3 BP |
2452 | return 0; |
2453 | } else { | |
93451a0a | 2454 | return dpif_netlink_refresh_channels(dpif, 1); |
8381a3d3 | 2455 | } |
96fba48f BP |
2456 | } |
2457 | ||
9fafa796 | 2458 | static int |
93451a0a | 2459 | dpif_netlink_recv_set(struct dpif *dpif_, bool enable) |
9fafa796 | 2460 | { |
93451a0a | 2461 | struct dpif_netlink *dpif = dpif_netlink_cast(dpif_); |
9fafa796 BP |
2462 | int error; |
2463 | ||
1579cf67 | 2464 | fat_rwlock_wrlock(&dpif->upcall_lock); |
93451a0a | 2465 | error = dpif_netlink_recv_set__(dpif, enable); |
1579cf67 | 2466 | fat_rwlock_unlock(&dpif->upcall_lock); |
9fafa796 BP |
2467 | |
2468 | return error; | |
2469 | } | |
2470 | ||
1954e6bb | 2471 | static int |
93451a0a | 2472 | dpif_netlink_handlers_set(struct dpif *dpif_, uint32_t n_handlers) |
1954e6bb | 2473 | { |
93451a0a | 2474 | struct dpif_netlink *dpif = dpif_netlink_cast(dpif_); |
1579cf67 AW |
2475 | int error = 0; |
2476 | ||
09cac43f NR |
2477 | #ifdef _WIN32 |
2478 | /* Multiple upcall handlers will be supported once kernel datapath supports | |
2479 | * it. */ | |
2480 | if (n_handlers > 1) { | |
2481 | return error; | |
2482 | } | |
2483 | #endif | |
2484 | ||
1579cf67 AW |
2485 | fat_rwlock_wrlock(&dpif->upcall_lock); |
2486 | if (dpif->handlers) { | |
93451a0a | 2487 | error = dpif_netlink_refresh_channels(dpif, n_handlers); |
1579cf67 AW |
2488 | } |
2489 | fat_rwlock_unlock(&dpif->upcall_lock); | |
2490 | ||
2491 | return error; | |
1954e6bb AW |
2492 | } |
2493 | ||
aae51f53 | 2494 | static int |
93451a0a | 2495 | dpif_netlink_queue_to_priority(const struct dpif *dpif OVS_UNUSED, |
aae51f53 BP |
2496 | uint32_t queue_id, uint32_t *priority) |
2497 | { | |
2498 | if (queue_id < 0xf000) { | |
17ee3c1f | 2499 | *priority = TC_H_MAKE(1 << 16, queue_id + 1); |
aae51f53 BP |
2500 | return 0; |
2501 | } else { | |
2502 | return EINVAL; | |
2503 | } | |
2504 | } | |
2505 | ||
96fba48f | 2506 | static int |
7af12bd7 JS |
2507 | parse_odp_packet(const struct dpif_netlink *dpif, struct ofpbuf *buf, |
2508 | struct dpif_upcall *upcall, int *dp_ifindex) | |
856081f6 | 2509 | { |
df2c07f4 | 2510 | static const struct nl_policy ovs_packet_policy[] = { |
856081f6 | 2511 | /* Always present. */ |
df2c07f4 | 2512 | [OVS_PACKET_ATTR_PACKET] = { .type = NL_A_UNSPEC, |
856081f6 | 2513 | .min_len = ETH_HEADER_LEN }, |
df2c07f4 | 2514 | [OVS_PACKET_ATTR_KEY] = { .type = NL_A_NESTED }, |
856081f6 | 2515 | |
df2c07f4 | 2516 | /* OVS_PACKET_CMD_ACTION only. */ |
e995e3df | 2517 | [OVS_PACKET_ATTR_USERDATA] = { .type = NL_A_UNSPEC, .optional = true }, |
8b7ea2d4 | 2518 | [OVS_PACKET_ATTR_EGRESS_TUN_KEY] = { .type = NL_A_NESTED, .optional = true }, |
7321bda3 | 2519 | [OVS_PACKET_ATTR_ACTIONS] = { .type = NL_A_NESTED, .optional = true }, |
27130224 | 2520 | [OVS_PACKET_ATTR_MRU] = { .type = NL_A_U16, .optional = true } |
856081f6 BP |
2521 | }; |
2522 | ||
0a2869d5 BP |
2523 | struct ofpbuf b = ofpbuf_const_initializer(buf->data, buf->size); |
2524 | struct nlmsghdr *nlmsg = ofpbuf_try_pull(&b, sizeof *nlmsg); | |
2525 | struct genlmsghdr *genl = ofpbuf_try_pull(&b, sizeof *genl); | |
2526 | struct ovs_header *ovs_header = ofpbuf_try_pull(&b, sizeof *ovs_header); | |
982b8810 | 2527 | |
0a2869d5 | 2528 | struct nlattr *a[ARRAY_SIZE(ovs_packet_policy)]; |
df2c07f4 JP |
2529 | if (!nlmsg || !genl || !ovs_header |
2530 | || nlmsg->nlmsg_type != ovs_packet_family | |
2531 | || !nl_policy_parse(&b, 0, ovs_packet_policy, a, | |
2532 | ARRAY_SIZE(ovs_packet_policy))) { | |
856081f6 BP |
2533 | return EINVAL; |
2534 | } | |
2535 | ||
0a2869d5 BP |
2536 | int type = (genl->cmd == OVS_PACKET_CMD_MISS ? DPIF_UC_MISS |
2537 | : genl->cmd == OVS_PACKET_CMD_ACTION ? DPIF_UC_ACTION | |
2538 | : -1); | |
aaff4b55 BP |
2539 | if (type < 0) { |
2540 | return EINVAL; | |
2541 | } | |
82272ede | 2542 | |
877c9270 | 2543 | /* (Re)set ALL fields of '*upcall' on successful return. */ |
aaff4b55 | 2544 | upcall->type = type; |
ebc56baa BP |
2545 | upcall->key = CONST_CAST(struct nlattr *, |
2546 | nl_attr_get(a[OVS_PACKET_ATTR_KEY])); | |
df2c07f4 | 2547 | upcall->key_len = nl_attr_get_size(a[OVS_PACKET_ATTR_KEY]); |
7af12bd7 | 2548 | dpif_flow_hash(&dpif->dpif, upcall->key, upcall->key_len, &upcall->ufid); |
e995e3df | 2549 | upcall->userdata = a[OVS_PACKET_ATTR_USERDATA]; |
8b7ea2d4 | 2550 | upcall->out_tun_key = a[OVS_PACKET_ATTR_EGRESS_TUN_KEY]; |
7321bda3 | 2551 | upcall->actions = a[OVS_PACKET_ATTR_ACTIONS]; |
27130224 | 2552 | upcall->mru = a[OVS_PACKET_ATTR_MRU]; |
da546e07 JR |
2553 | |
2554 | /* Allow overwriting the netlink attribute header without reallocating. */ | |
cf62fa4c | 2555 | dp_packet_use_stub(&upcall->packet, |
da546e07 JR |
2556 | CONST_CAST(struct nlattr *, |
2557 | nl_attr_get(a[OVS_PACKET_ATTR_PACKET])) - 1, | |
2558 | nl_attr_get_size(a[OVS_PACKET_ATTR_PACKET]) + | |
2559 | sizeof(struct nlattr)); | |
cf62fa4c PS |
2560 | dp_packet_set_data(&upcall->packet, |
2561 | (char *)dp_packet_data(&upcall->packet) + sizeof(struct nlattr)); | |
2562 | dp_packet_set_size(&upcall->packet, nl_attr_get_size(a[OVS_PACKET_ATTR_PACKET])); | |
da546e07 | 2563 | |
2482b0b0 JS |
2564 | if (nl_attr_find__(upcall->key, upcall->key_len, OVS_KEY_ATTR_ETHERNET)) { |
2565 | /* Ethernet frame */ | |
2566 | upcall->packet.packet_type = htonl(PT_ETH); | |
2567 | } else { | |
2568 | /* Non-Ethernet packet. Get the Ethertype from the NL attributes */ | |
2569 | ovs_be16 ethertype = 0; | |
2570 | const struct nlattr *et_nla = nl_attr_find__(upcall->key, | |
2571 | upcall->key_len, | |
2572 | OVS_KEY_ATTR_ETHERTYPE); | |
2573 | if (et_nla) { | |
2574 | ethertype = nl_attr_get_be16(et_nla); | |
2575 | } | |
2576 | upcall->packet.packet_type = PACKET_TYPE_BE(OFPHTN_ETHERTYPE, | |
2577 | ntohs(ethertype)); | |
2578 | dp_packet_set_l3(&upcall->packet, dp_packet_data(&upcall->packet)); | |
2579 | } | |
2580 | ||
df2c07f4 | 2581 | *dp_ifindex = ovs_header->dp_ifindex; |
982b8810 | 2582 | |
856081f6 BP |
2583 | return 0; |
2584 | } | |
2585 | ||
09cac43f NR |
2586 | #ifdef _WIN32 |
2587 | #define PACKET_RECV_BATCH_SIZE 50 | |
2588 | static int | |
2589 | dpif_netlink_recv_windows(struct dpif_netlink *dpif, uint32_t handler_id, | |
2590 | struct dpif_upcall *upcall, struct ofpbuf *buf) | |
2591 | OVS_REQ_RDLOCK(dpif->upcall_lock) | |
2592 | { | |
2593 | struct dpif_handler *handler; | |
2594 | int read_tries = 0; | |
2595 | struct dpif_windows_vport_sock *sock_pool; | |
2596 | uint32_t i; | |
2597 | ||
2598 | if (!dpif->handlers) { | |
2599 | return EAGAIN; | |
2600 | } | |
2601 | ||
2602 | /* Only one handler is supported currently. */ | |
2603 | if (handler_id >= 1) { | |
2604 | return EAGAIN; | |
2605 | } | |
2606 | ||
2607 | if (handler_id >= dpif->n_handlers) { | |
2608 | return EAGAIN; | |
2609 | } | |
2610 | ||
2611 | handler = &dpif->handlers[handler_id]; | |
2612 | sock_pool = handler->vport_sock_pool; | |
2613 | ||
2614 | for (i = 0; i < VPORT_SOCK_POOL_SIZE; i++) { | |
2615 | for (;;) { | |
2616 | int dp_ifindex; | |
2617 | int error; | |
2618 | ||
2619 | if (++read_tries > PACKET_RECV_BATCH_SIZE) { | |
2620 | return EAGAIN; | |
2621 | } | |
2622 | ||
a86bd14e | 2623 | error = nl_sock_recv(sock_pool[i].nl_sock, buf, NULL, false); |
09cac43f NR |
2624 | if (error == ENOBUFS) { |
2625 | /* ENOBUFS typically means that we've received so many | |
2626 | * packets that the buffer overflowed. Try again | |
2627 | * immediately because there's almost certainly a packet | |
2628 | * waiting for us. */ | |
2629 | /* XXX: report_loss(dpif, ch, idx, handler_id); */ | |
2630 | continue; | |
2631 | } | |
2632 | ||
2633 | /* XXX: ch->last_poll = time_msec(); */ | |
2634 | if (error) { | |
2635 | if (error == EAGAIN) { | |
2636 | break; | |
2637 | } | |
2638 | return error; | |
2639 | } | |
2640 | ||
27edb4aa | 2641 | error = parse_odp_packet(dpif, buf, upcall, &dp_ifindex); |
09cac43f NR |
2642 | if (!error && dp_ifindex == dpif->dp_ifindex) { |
2643 | return 0; | |
2644 | } else if (error) { | |
2645 | return error; | |
2646 | } | |
2647 | } | |
2648 | } | |
2649 | ||
2650 | return EAGAIN; | |
2651 | } | |
2652 | #else | |
856081f6 | 2653 | static int |
93451a0a AS |
2654 | dpif_netlink_recv__(struct dpif_netlink *dpif, uint32_t handler_id, |
2655 | struct dpif_upcall *upcall, struct ofpbuf *buf) | |
b90de034 | 2656 | OVS_REQ_RDLOCK(dpif->upcall_lock) |
96fba48f | 2657 | { |
1579cf67 | 2658 | struct dpif_handler *handler; |
17411ecf | 2659 | int read_tries = 0; |
96fba48f | 2660 | |
1579cf67 AW |
2661 | if (!dpif->handlers || handler_id >= dpif->n_handlers) { |
2662 | return EAGAIN; | |
982b8810 BP |
2663 | } |
2664 | ||
1579cf67 AW |
2665 | handler = &dpif->handlers[handler_id]; |
2666 | if (handler->event_offset >= handler->n_events) { | |
8522ba09 | 2667 | int retval; |
989fd548 | 2668 | |
1579cf67 | 2669 | handler->event_offset = handler->n_events = 0; |
f6d1465c | 2670 | |
8522ba09 | 2671 | do { |
1579cf67 | 2672 | retval = epoll_wait(handler->epoll_fd, handler->epoll_events, |
989fd548 | 2673 | dpif->uc_array_size, 0); |
8522ba09 | 2674 | } while (retval < 0 && errno == EINTR); |
09cac43f | 2675 | |
8522ba09 BP |
2676 | if (retval < 0) { |
2677 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); | |
10a89ef0 | 2678 | VLOG_WARN_RL(&rl, "epoll_wait failed (%s)", ovs_strerror(errno)); |
989fd548 | 2679 | } else if (retval > 0) { |
1579cf67 | 2680 | handler->n_events = retval; |
8522ba09 | 2681 | } |
8522ba09 BP |
2682 | } |
2683 | ||
1579cf67 AW |
2684 | while (handler->event_offset < handler->n_events) { |
2685 | int idx = handler->epoll_events[handler->event_offset].data.u32; | |
2686 | struct dpif_channel *ch = &dpif->handlers[handler_id].channels[idx]; | |
8522ba09 | 2687 | |
1579cf67 | 2688 | handler->event_offset++; |
17411ecf | 2689 | |
f6d1465c | 2690 | for (;;) { |
8522ba09 | 2691 | int dp_ifindex; |
f6d1465c | 2692 | int error; |
17411ecf | 2693 | |
f6d1465c BP |
2694 | if (++read_tries > 50) { |
2695 | return EAGAIN; | |
2696 | } | |
17411ecf | 2697 | |
a86bd14e | 2698 | error = nl_sock_recv(ch->sock, buf, NULL, false); |
14b4d2f9 BP |
2699 | if (error == ENOBUFS) { |
2700 | /* ENOBUFS typically means that we've received so many | |
2701 | * packets that the buffer overflowed. Try again | |
2702 | * immediately because there's almost certainly a packet | |
2703 | * waiting for us. */ | |
9b00386b | 2704 | report_loss(dpif, ch, idx, handler_id); |
14b4d2f9 BP |
2705 | continue; |
2706 | } | |
2707 | ||
2708 | ch->last_poll = time_msec(); | |
72d32ac0 | 2709 | if (error) { |
72d32ac0 BP |
2710 | if (error == EAGAIN) { |
2711 | break; | |
2712 | } | |
f6d1465c BP |
2713 | return error; |
2714 | } | |
17411ecf | 2715 | |
7af12bd7 | 2716 | error = parse_odp_packet(dpif, buf, upcall, &dp_ifindex); |
a12b3ead | 2717 | if (!error && dp_ifindex == dpif->dp_ifindex) { |
f6d1465c | 2718 | return 0; |
989fd548 | 2719 | } else if (error) { |
f6d1465c | 2720 | return error; |
17411ecf | 2721 | } |
982b8810 | 2722 | } |
50f80534 | 2723 | } |
982b8810 BP |
2724 | |
2725 | return EAGAIN; | |
96fba48f | 2726 | } |
09cac43f | 2727 | #endif |
96fba48f | 2728 | |
9fafa796 | 2729 | static int |
93451a0a AS |
2730 | dpif_netlink_recv(struct dpif *dpif_, uint32_t handler_id, |
2731 | struct dpif_upcall *upcall, struct ofpbuf *buf) | |
9fafa796 | 2732 | { |
93451a0a | 2733 | struct dpif_netlink *dpif = dpif_netlink_cast(dpif_); |
9fafa796 BP |
2734 | int error; |
2735 | ||
1579cf67 | 2736 | fat_rwlock_rdlock(&dpif->upcall_lock); |
09cac43f NR |
2737 | #ifdef _WIN32 |
2738 | error = dpif_netlink_recv_windows(dpif, handler_id, upcall, buf); | |
2739 | #else | |
93451a0a | 2740 | error = dpif_netlink_recv__(dpif, handler_id, upcall, buf); |
09cac43f | 2741 | #endif |
1579cf67 | 2742 | fat_rwlock_unlock(&dpif->upcall_lock); |
9fafa796 BP |
2743 | |
2744 | return error; | |
2745 | } | |
2746 | ||
96fba48f | 2747 | static void |
93451a0a | 2748 | dpif_netlink_recv_wait__(struct dpif_netlink *dpif, uint32_t handler_id) |
b90de034 | 2749 | OVS_REQ_RDLOCK(dpif->upcall_lock) |
96fba48f | 2750 | { |
93451a0a | 2751 | #ifdef _WIN32 |
09cac43f NR |
2752 | uint32_t i; |
2753 | struct dpif_windows_vport_sock *sock_pool = | |
2754 | dpif->handlers[handler_id].vport_sock_pool; | |
2755 | ||
2756 | /* Only one handler is supported currently. */ | |
2757 | if (handler_id >= 1) { | |
2758 | return; | |
2759 | } | |
2760 | ||
2761 | for (i = 0; i < VPORT_SOCK_POOL_SIZE; i++) { | |
2762 | nl_sock_wait(sock_pool[i].nl_sock, POLLIN); | |
2763 | } | |
93451a0a | 2764 | #else |
1579cf67 AW |
2765 | if (dpif->handlers && handler_id < dpif->n_handlers) { |
2766 | struct dpif_handler *handler = &dpif->handlers[handler_id]; | |
2767 | ||
2768 | poll_fd_wait(handler->epoll_fd, POLLIN); | |
17411ecf | 2769 | } |
93451a0a | 2770 | #endif |
96fba48f BP |
2771 | } |
2772 | ||
1ba530f4 | 2773 | static void |
93451a0a | 2774 | dpif_netlink_recv_wait(struct dpif *dpif_, uint32_t handler_id) |
1ba530f4 | 2775 | { |
93451a0a | 2776 | struct dpif_netlink *dpif = dpif_netlink_cast(dpif_); |
17411ecf | 2777 | |
b90de034 | 2778 | fat_rwlock_rdlock(&dpif->upcall_lock); |
93451a0a | 2779 | dpif_netlink_recv_wait__(dpif, handler_id); |
b90de034 AW |
2780 | fat_rwlock_unlock(&dpif->upcall_lock); |
2781 | } | |
2782 | ||
2783 | static void | |
93451a0a | 2784 | dpif_netlink_recv_purge__(struct dpif_netlink *dpif) |
b90de034 AW |
2785 | OVS_REQ_WRLOCK(dpif->upcall_lock) |
2786 | { | |
1579cf67 AW |
2787 | if (dpif->handlers) { |
2788 | size_t i, j; | |
2789 | ||
2790 | for (i = 0; i < dpif->uc_array_size; i++ ) { | |
2791 | if (!dpif->handlers[0].channels[i].sock) { | |
2792 | continue; | |
2793 | } | |
1ba530f4 | 2794 | |
1579cf67 AW |
2795 | for (j = 0; j < dpif->n_handlers; j++) { |
2796 | nl_sock_drain(dpif->handlers[j].channels[i].sock); | |
9fafa796 | 2797 | } |
989fd548 | 2798 | } |
1ba530f4 | 2799 | } |
b90de034 AW |
2800 | } |
2801 | ||
2802 | static void | |
93451a0a | 2803 | dpif_netlink_recv_purge(struct dpif *dpif_) |
b90de034 | 2804 | { |
93451a0a | 2805 | struct dpif_netlink *dpif = dpif_netlink_cast(dpif_); |
b90de034 AW |
2806 | |
2807 | fat_rwlock_wrlock(&dpif->upcall_lock); | |
93451a0a | 2808 | dpif_netlink_recv_purge__(dpif); |
1579cf67 | 2809 | fat_rwlock_unlock(&dpif->upcall_lock); |
1ba530f4 BP |
2810 | } |
2811 | ||
b5cbbcf6 AZ |
2812 | static char * |
2813 | dpif_netlink_get_datapath_version(void) | |
2814 | { | |
2815 | char *version_str = NULL; | |
2816 | ||
2817 | #ifdef __linux__ | |
2818 | ||
2819 | #define MAX_VERSION_STR_SIZE 80 | |
2820 | #define LINUX_DATAPATH_VERSION_FILE "/sys/module/openvswitch/version" | |
2821 | FILE *f; | |
2822 | ||
2823 | f = fopen(LINUX_DATAPATH_VERSION_FILE, "r"); | |
2824 | if (f) { | |
2825 | char *newline; | |
2826 | char version[MAX_VERSION_STR_SIZE]; | |
2827 | ||
2828 | if (fgets(version, MAX_VERSION_STR_SIZE, f)) { | |
2829 | newline = strchr(version, '\n'); | |
2830 | if (newline) { | |
2831 | *newline = '\0'; | |
2832 | } | |
2833 | version_str = xstrdup(version); | |
2834 | } | |
2835 | fclose(f); | |
2836 | } | |
2837 | #endif | |
2838 | ||
2839 | return version_str; | |
2840 | } | |
2841 | ||
c11c9f4a DDP |
2842 | struct dpif_netlink_ct_dump_state { |
2843 | struct ct_dpif_dump_state up; | |
2844 | struct nl_ct_dump_state *nl_ct_dump; | |
2845 | }; | |
2846 | ||
2847 | static int | |
2848 | dpif_netlink_ct_dump_start(struct dpif *dpif OVS_UNUSED, | |
2849 | struct ct_dpif_dump_state **dump_, | |
ded30c74 | 2850 | const uint16_t *zone, int *ptot_bkts) |
c11c9f4a DDP |
2851 | { |
2852 | struct dpif_netlink_ct_dump_state *dump; | |
2853 | int err; | |
2854 | ||
2855 | dump = xzalloc(sizeof *dump); | |
ded30c74 | 2856 | err = nl_ct_dump_start(&dump->nl_ct_dump, zone, ptot_bkts); |
c11c9f4a DDP |
2857 | if (err) { |
2858 | free(dump); | |
2859 | return err; | |
2860 | } | |
2861 | ||
2862 | *dump_ = &dump->up; | |
2863 | ||
2864 | return 0; | |
2865 | } | |
2866 | ||
2867 | static int | |
2868 | dpif_netlink_ct_dump_next(struct dpif *dpif OVS_UNUSED, | |
2869 | struct ct_dpif_dump_state *dump_, | |
2870 | struct ct_dpif_entry *entry) | |
2871 | { | |
2872 | struct dpif_netlink_ct_dump_state *dump; | |
2873 | ||
2874 | INIT_CONTAINER(dump, dump_, up); | |
2875 | ||
2876 | return nl_ct_dump_next(dump->nl_ct_dump, entry); | |
2877 | } | |
2878 | ||
2879 | static int | |
2880 | dpif_netlink_ct_dump_done(struct dpif *dpif OVS_UNUSED, | |
2881 | struct ct_dpif_dump_state *dump_) | |
2882 | { | |
2883 | struct dpif_netlink_ct_dump_state *dump; | |
2884 | int err; | |
2885 | ||
2886 | INIT_CONTAINER(dump, dump_, up); | |
2887 | ||
2888 | err = nl_ct_dump_done(dump->nl_ct_dump); | |
2889 | free(dump); | |
2890 | return err; | |
2891 | } | |
15eabc97 DDP |
2892 | |
2893 | static int | |
817a7657 YHW |
2894 | dpif_netlink_ct_flush(struct dpif *dpif OVS_UNUSED, const uint16_t *zone, |
2895 | const struct ct_dpif_tuple *tuple) | |
15eabc97 | 2896 | { |
817a7657 YHW |
2897 | if (tuple) { |
2898 | return nl_ct_flush_tuple(tuple, zone ? *zone : 0); | |
2899 | } else if (zone) { | |
15eabc97 DDP |
2900 | return nl_ct_flush_zone(*zone); |
2901 | } else { | |
2902 | return nl_ct_flush(); | |
2903 | } | |
2904 | } | |
c11c9f4a | 2905 | |
5dddf960 JR |
2906 | \f |
2907 | /* Meters */ | |
2908 | static void | |
2909 | dpif_netlink_meter_get_features(const struct dpif * dpif OVS_UNUSED, | |
2910 | struct ofputil_meter_features *features) | |
2911 | { | |
2912 | features->max_meters = 0; | |
2913 | features->band_types = 0; | |
2914 | features->capabilities = 0; | |
2915 | features->max_bands = 0; | |
2916 | features->max_color = 0; | |
2917 | } | |
2918 | ||
2919 | static int | |
2920 | dpif_netlink_meter_set(struct dpif *dpif OVS_UNUSED, | |
2921 | ofproto_meter_id *meter_id OVS_UNUSED, | |
2922 | struct ofputil_meter_config *config OVS_UNUSED) | |
2923 | { | |
2924 | return EFBIG; /* meter_id out of range */ | |
2925 | } | |
2926 | ||
2927 | static int | |
2928 | dpif_netlink_meter_get(const struct dpif *dpif OVS_UNUSED, | |
2929 | ofproto_meter_id meter_id OVS_UNUSED, | |
2930 | struct ofputil_meter_stats *stats OVS_UNUSED, | |
2931 | uint16_t n_bands OVS_UNUSED) | |
2932 | { | |
2933 | return EFBIG; /* meter_id out of range */ | |
2934 | } | |
2935 | ||
2936 | static int | |
2937 | dpif_netlink_meter_del(struct dpif *dpif OVS_UNUSED, | |
2938 | ofproto_meter_id meter_id OVS_UNUSED, | |
2939 | struct ofputil_meter_stats *stats OVS_UNUSED, | |
2940 | uint16_t n_bands OVS_UNUSED) | |
2941 | { | |
2942 | return EFBIG; /* meter_id out of range */ | |
2943 | } | |
2944 | ||
2945 | \f | |
93451a0a | 2946 | const struct dpif_class dpif_netlink_class = { |
1a6f1e2a | 2947 | "system", |
c8973eb6 | 2948 | NULL, /* init */ |
93451a0a | 2949 | dpif_netlink_enumerate, |
0aeaabc8 | 2950 | NULL, |
93451a0a AS |
2951 | dpif_netlink_open, |
2952 | dpif_netlink_close, | |
2953 | dpif_netlink_destroy, | |
2954 | dpif_netlink_run, | |
e4516b20 | 2955 | NULL, /* wait */ |
93451a0a AS |
2956 | dpif_netlink_get_stats, |
2957 | dpif_netlink_port_add, | |
2958 | dpif_netlink_port_del, | |
91364d18 | 2959 | NULL, /* port_set_config */ |
93451a0a AS |
2960 | dpif_netlink_port_query_by_number, |
2961 | dpif_netlink_port_query_by_name, | |
2962 | dpif_netlink_port_get_pid, | |
2963 | dpif_netlink_port_dump_start, | |
2964 | dpif_netlink_port_dump_next, | |
2965 | dpif_netlink_port_dump_done, | |
2966 | dpif_netlink_port_poll, | |
2967 | dpif_netlink_port_poll_wait, | |
2968 | dpif_netlink_flow_flush, | |
2969 | dpif_netlink_flow_dump_create, | |
2970 | dpif_netlink_flow_dump_destroy, | |
2971 | dpif_netlink_flow_dump_thread_create, | |
2972 | dpif_netlink_flow_dump_thread_destroy, | |
2973 | dpif_netlink_flow_dump_next, | |
2974 | dpif_netlink_operate, | |
2975 | dpif_netlink_recv_set, | |
2976 | dpif_netlink_handlers_set, | |
d4f6865c | 2977 | NULL, /* set_config */ |
93451a0a AS |
2978 | dpif_netlink_queue_to_priority, |
2979 | dpif_netlink_recv, | |
2980 | dpif_netlink_recv_wait, | |
2981 | dpif_netlink_recv_purge, | |
e4e74c3a | 2982 | NULL, /* register_dp_purge_cb */ |
6b31e073 RW |
2983 | NULL, /* register_upcall_cb */ |
2984 | NULL, /* enable_upcall */ | |
2985 | NULL, /* disable_upcall */ | |
b5cbbcf6 | 2986 | dpif_netlink_get_datapath_version, /* get_datapath_version */ |
c11c9f4a DDP |
2987 | dpif_netlink_ct_dump_start, |
2988 | dpif_netlink_ct_dump_next, | |
2989 | dpif_netlink_ct_dump_done, | |
5dddf960 | 2990 | dpif_netlink_ct_flush, |
c92339ad DB |
2991 | NULL, /* ct_set_maxconns */ |
2992 | NULL, /* ct_get_maxconns */ | |
875075b3 | 2993 | NULL, /* ct_get_nconns */ |
5dddf960 JR |
2994 | dpif_netlink_meter_get_features, |
2995 | dpif_netlink_meter_set, | |
2996 | dpif_netlink_meter_get, | |
2997 | dpif_netlink_meter_del, | |
96fba48f | 2998 | }; |
93451a0a | 2999 | |
96fba48f | 3000 | static int |
93451a0a | 3001 | dpif_netlink_init(void) |
96fba48f | 3002 | { |
eb8ed438 BP |
3003 | static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER; |
3004 | static int error; | |
982b8810 | 3005 | |
eb8ed438 | 3006 | if (ovsthread_once_start(&once)) { |
df2c07f4 JP |
3007 | error = nl_lookup_genl_family(OVS_DATAPATH_FAMILY, |
3008 | &ovs_datapath_family); | |
37a1300c | 3009 | if (error) { |
e0e2410d | 3010 | VLOG_INFO("Generic Netlink family '%s' does not exist. " |
cae7529c CL |
3011 | "The Open vSwitch kernel module is probably not loaded.", |
3012 | OVS_DATAPATH_FAMILY); | |
37a1300c | 3013 | } |
f0fef760 | 3014 | if (!error) { |
df2c07f4 | 3015 | error = nl_lookup_genl_family(OVS_VPORT_FAMILY, &ovs_vport_family); |
f0fef760 | 3016 | } |
37a1300c | 3017 | if (!error) { |
df2c07f4 | 3018 | error = nl_lookup_genl_family(OVS_FLOW_FAMILY, &ovs_flow_family); |
37a1300c | 3019 | } |
aaff4b55 | 3020 | if (!error) { |
df2c07f4 JP |
3021 | error = nl_lookup_genl_family(OVS_PACKET_FAMILY, |
3022 | &ovs_packet_family); | |
aaff4b55 | 3023 | } |
c7178a0b EJ |
3024 | if (!error) { |
3025 | error = nl_lookup_genl_mcgroup(OVS_VPORT_FAMILY, OVS_VPORT_MCGROUP, | |
b3dcb73c | 3026 | &ovs_vport_mcgroup); |
c7178a0b | 3027 | } |
eb8ed438 | 3028 | |
921c370a EG |
3029 | ovs_tunnels_out_of_tree = dpif_netlink_rtnl_probe_oot_tunnels(); |
3030 | ||
eb8ed438 | 3031 | ovsthread_once_done(&once); |
982b8810 BP |
3032 | } |
3033 | ||
3034 | return error; | |
96fba48f BP |
3035 | } |
3036 | ||
c19e6535 | 3037 | bool |
93451a0a | 3038 | dpif_netlink_is_internal_device(const char *name) |
9fe3b9a2 | 3039 | { |
93451a0a | 3040 | struct dpif_netlink_vport reply; |
c19e6535 | 3041 | struct ofpbuf *buf; |
9fe3b9a2 | 3042 | int error; |
96fba48f | 3043 | |
93451a0a | 3044 | error = dpif_netlink_vport_get(name, &reply, &buf); |
c19e6535 BP |
3045 | if (!error) { |
3046 | ofpbuf_delete(buf); | |
141d9ce4 | 3047 | } else if (error != ENODEV && error != ENOENT) { |
c19e6535 | 3048 | VLOG_WARN_RL(&error_rl, "%s: vport query failed (%s)", |
10a89ef0 | 3049 | name, ovs_strerror(error)); |
96fba48f BP |
3050 | } |
3051 | ||
df2c07f4 | 3052 | return reply.type == OVS_VPORT_TYPE_INTERNAL; |
96fba48f | 3053 | } |
e0467f6d | 3054 | |
df2c07f4 | 3055 | /* Parses the contents of 'buf', which contains a "struct ovs_header" followed |
c19e6535 BP |
3056 | * by Netlink attributes, into 'vport'. Returns 0 if successful, otherwise a |
3057 | * positive errno value. | |
3058 | * | |
3059 | * 'vport' will contain pointers into 'buf', so the caller should not free | |
3060 | * 'buf' while 'vport' is still in use. */ | |
3061 | static int | |
93451a0a | 3062 | dpif_netlink_vport_from_ofpbuf(struct dpif_netlink_vport *vport, |
c19e6535 BP |
3063 | const struct ofpbuf *buf) |
3064 | { | |
df2c07f4 JP |
3065 | static const struct nl_policy ovs_vport_policy[] = { |
3066 | [OVS_VPORT_ATTR_PORT_NO] = { .type = NL_A_U32 }, | |
3067 | [OVS_VPORT_ATTR_TYPE] = { .type = NL_A_U32 }, | |
3068 | [OVS_VPORT_ATTR_NAME] = { .type = NL_A_STRING, .max_len = IFNAMSIZ }, | |
1579cf67 | 3069 | [OVS_VPORT_ATTR_UPCALL_PID] = { .type = NL_A_UNSPEC }, |
f7df9823 | 3070 | [OVS_VPORT_ATTR_STATS] = { NL_POLICY_FOR(struct ovs_vport_stats), |
c19e6535 | 3071 | .optional = true }, |
df2c07f4 | 3072 | [OVS_VPORT_ATTR_OPTIONS] = { .type = NL_A_NESTED, .optional = true }, |
bfda5239 | 3073 | [OVS_VPORT_ATTR_NETNSID] = { .type = NL_A_U32, .optional = true }, |
c19e6535 BP |
3074 | }; |
3075 | ||
93451a0a | 3076 | dpif_netlink_vport_init(vport); |
c19e6535 | 3077 | |
0a2869d5 BP |
3078 | struct ofpbuf b = ofpbuf_const_initializer(buf->data, buf->size); |
3079 | struct nlmsghdr *nlmsg = ofpbuf_try_pull(&b, sizeof *nlmsg); | |
3080 | struct genlmsghdr *genl = ofpbuf_try_pull(&b, sizeof *genl); | |
3081 | struct ovs_header *ovs_header = ofpbuf_try_pull(&b, sizeof *ovs_header); | |
3082 | ||
3083 | struct nlattr *a[ARRAY_SIZE(ovs_vport_policy)]; | |
df2c07f4 JP |
3084 | if (!nlmsg || !genl || !ovs_header |
3085 | || nlmsg->nlmsg_type != ovs_vport_family | |
3086 | || !nl_policy_parse(&b, 0, ovs_vport_policy, a, | |
3087 | ARRAY_SIZE(ovs_vport_policy))) { | |
c19e6535 BP |
3088 | return EINVAL; |
3089 | } | |
c19e6535 | 3090 | |
f0fef760 | 3091 | vport->cmd = genl->cmd; |
df2c07f4 | 3092 | vport->dp_ifindex = ovs_header->dp_ifindex; |
4e022ec0 | 3093 | vport->port_no = nl_attr_get_odp_port(a[OVS_VPORT_ATTR_PORT_NO]); |
df2c07f4 JP |
3094 | vport->type = nl_attr_get_u32(a[OVS_VPORT_ATTR_TYPE]); |
3095 | vport->name = nl_attr_get_string(a[OVS_VPORT_ATTR_NAME]); | |
b063d9f0 | 3096 | if (a[OVS_VPORT_ATTR_UPCALL_PID]) { |
1579cf67 AW |
3097 | vport->n_upcall_pids = nl_attr_get_size(a[OVS_VPORT_ATTR_UPCALL_PID]) |
3098 | / (sizeof *vport->upcall_pids); | |
3099 | vport->upcall_pids = nl_attr_get(a[OVS_VPORT_ATTR_UPCALL_PID]); | |
3100 | ||
b063d9f0 | 3101 | } |
df2c07f4 JP |
3102 | if (a[OVS_VPORT_ATTR_STATS]) { |
3103 | vport->stats = nl_attr_get(a[OVS_VPORT_ATTR_STATS]); | |
3104 | } | |
df2c07f4 JP |
3105 | if (a[OVS_VPORT_ATTR_OPTIONS]) { |
3106 | vport->options = nl_attr_get(a[OVS_VPORT_ATTR_OPTIONS]); | |
3107 | vport->options_len = nl_attr_get_size(a[OVS_VPORT_ATTR_OPTIONS]); | |
c19e6535 | 3108 | } |
bfda5239 FL |
3109 | if (a[OVS_VPORT_ATTR_NETNSID]) { |
3110 | netnsid_set(&vport->netnsid, | |
3111 | nl_attr_get_u32(a[OVS_VPORT_ATTR_NETNSID])); | |
3112 | } else { | |
3113 | netnsid_set_local(&vport->netnsid); | |
3114 | } | |
c19e6535 BP |
3115 | return 0; |
3116 | } | |
3117 | ||
df2c07f4 | 3118 | /* Appends to 'buf' (which must initially be empty) a "struct ovs_header" |
c19e6535 BP |
3119 | * followed by Netlink attributes corresponding to 'vport'. */ |
3120 | static void | |
93451a0a AS |
3121 | dpif_netlink_vport_to_ofpbuf(const struct dpif_netlink_vport *vport, |
3122 | struct ofpbuf *buf) | |
c19e6535 | 3123 | { |
df2c07f4 | 3124 | struct ovs_header *ovs_header; |
f0fef760 | 3125 | |
df2c07f4 | 3126 | nl_msg_put_genlmsghdr(buf, 0, ovs_vport_family, NLM_F_REQUEST | NLM_F_ECHO, |
69685a88 | 3127 | vport->cmd, OVS_VPORT_VERSION); |
c19e6535 | 3128 | |
df2c07f4 JP |
3129 | ovs_header = ofpbuf_put_uninit(buf, sizeof *ovs_header); |
3130 | ovs_header->dp_ifindex = vport->dp_ifindex; | |
c19e6535 | 3131 | |
4e022ec0 AW |
3132 | if (vport->port_no != ODPP_NONE) { |
3133 | nl_msg_put_odp_port(buf, OVS_VPORT_ATTR_PORT_NO, vport->port_no); | |
c19e6535 BP |
3134 | } |
3135 | ||
df2c07f4 JP |
3136 | if (vport->type != OVS_VPORT_TYPE_UNSPEC) { |
3137 | nl_msg_put_u32(buf, OVS_VPORT_ATTR_TYPE, vport->type); | |
c19e6535 BP |
3138 | } |
3139 | ||
3140 | if (vport->name) { | |
df2c07f4 | 3141 | nl_msg_put_string(buf, OVS_VPORT_ATTR_NAME, vport->name); |
c19e6535 BP |
3142 | } |
3143 | ||
1579cf67 AW |
3144 | if (vport->upcall_pids) { |
3145 | nl_msg_put_unspec(buf, OVS_VPORT_ATTR_UPCALL_PID, | |
3146 | vport->upcall_pids, | |
3147 | vport->n_upcall_pids * sizeof *vport->upcall_pids); | |
a24a6574 | 3148 | } |
b063d9f0 | 3149 | |
c19e6535 | 3150 | if (vport->stats) { |
df2c07f4 | 3151 | nl_msg_put_unspec(buf, OVS_VPORT_ATTR_STATS, |
c19e6535 BP |
3152 | vport->stats, sizeof *vport->stats); |
3153 | } | |
3154 | ||
c19e6535 | 3155 | if (vport->options) { |
df2c07f4 | 3156 | nl_msg_put_nested(buf, OVS_VPORT_ATTR_OPTIONS, |
c19e6535 BP |
3157 | vport->options, vport->options_len); |
3158 | } | |
c19e6535 BP |
3159 | } |
3160 | ||
3161 | /* Clears 'vport' to "empty" values. */ | |
3162 | void | |
93451a0a | 3163 | dpif_netlink_vport_init(struct dpif_netlink_vport *vport) |
c19e6535 BP |
3164 | { |
3165 | memset(vport, 0, sizeof *vport); | |
4e022ec0 | 3166 | vport->port_no = ODPP_NONE; |
c19e6535 BP |
3167 | } |
3168 | ||
3169 | /* Executes 'request' in the kernel datapath. If the command fails, returns a | |
3170 | * positive errno value. Otherwise, if 'reply' and 'bufp' are null, returns 0 | |
3171 | * without doing anything else. If 'reply' and 'bufp' are nonnull, then the | |
df2c07f4 | 3172 | * result of the command is expected to be an ovs_vport also, which is decoded |
c19e6535 BP |
3173 | * and stored in '*reply' and '*bufp'. The caller must free '*bufp' when the |
3174 | * reply is no longer needed ('reply' will contain pointers into '*bufp'). */ | |
3175 | int | |
93451a0a AS |
3176 | dpif_netlink_vport_transact(const struct dpif_netlink_vport *request, |
3177 | struct dpif_netlink_vport *reply, | |
3178 | struct ofpbuf **bufp) | |
c19e6535 | 3179 | { |
f0fef760 | 3180 | struct ofpbuf *request_buf; |
c19e6535 BP |
3181 | int error; |
3182 | ||
cb22974d | 3183 | ovs_assert((reply != NULL) == (bufp != NULL)); |
c19e6535 | 3184 | |
93451a0a | 3185 | error = dpif_netlink_init(); |
42bb6c72 BP |
3186 | if (error) { |
3187 | if (reply) { | |
3188 | *bufp = NULL; | |
93451a0a | 3189 | dpif_netlink_vport_init(reply); |
42bb6c72 BP |
3190 | } |
3191 | return error; | |
3192 | } | |
3193 | ||
f0fef760 | 3194 | request_buf = ofpbuf_new(1024); |
93451a0a | 3195 | dpif_netlink_vport_to_ofpbuf(request, request_buf); |
a88b4e04 | 3196 | error = nl_transact(NETLINK_GENERIC, request_buf, bufp); |
f0fef760 | 3197 | ofpbuf_delete(request_buf); |
c19e6535 | 3198 | |
f0fef760 BP |
3199 | if (reply) { |
3200 | if (!error) { | |
93451a0a | 3201 | error = dpif_netlink_vport_from_ofpbuf(reply, *bufp); |
f0fef760 | 3202 | } |
c19e6535 | 3203 | if (error) { |
93451a0a | 3204 | dpif_netlink_vport_init(reply); |
f0fef760 BP |
3205 | ofpbuf_delete(*bufp); |
3206 | *bufp = NULL; | |
c19e6535 | 3207 | } |
c19e6535 BP |
3208 | } |
3209 | return error; | |
3210 | } | |
3211 | ||
3212 | /* Obtains information about the kernel vport named 'name' and stores it into | |
3213 | * '*reply' and '*bufp'. The caller must free '*bufp' when the reply is no | |
3214 | * longer needed ('reply' will contain pointers into '*bufp'). */ | |
3215 | int | |
93451a0a AS |
3216 | dpif_netlink_vport_get(const char *name, struct dpif_netlink_vport *reply, |
3217 | struct ofpbuf **bufp) | |
c19e6535 | 3218 | { |
93451a0a | 3219 | struct dpif_netlink_vport request; |
c19e6535 | 3220 | |
93451a0a | 3221 | dpif_netlink_vport_init(&request); |
df2c07f4 | 3222 | request.cmd = OVS_VPORT_CMD_GET; |
c19e6535 BP |
3223 | request.name = name; |
3224 | ||
93451a0a | 3225 | return dpif_netlink_vport_transact(&request, reply, bufp); |
c19e6535 | 3226 | } |
93451a0a | 3227 | |
df2c07f4 | 3228 | /* Parses the contents of 'buf', which contains a "struct ovs_header" followed |
aaff4b55 BP |
3229 | * by Netlink attributes, into 'dp'. Returns 0 if successful, otherwise a |
3230 | * positive errno value. | |
d6569377 BP |
3231 | * |
3232 | * 'dp' will contain pointers into 'buf', so the caller should not free 'buf' | |
3233 | * while 'dp' is still in use. */ | |
3234 | static int | |
93451a0a | 3235 | dpif_netlink_dp_from_ofpbuf(struct dpif_netlink_dp *dp, const struct ofpbuf *buf) |
d6569377 | 3236 | { |
df2c07f4 JP |
3237 | static const struct nl_policy ovs_datapath_policy[] = { |
3238 | [OVS_DP_ATTR_NAME] = { .type = NL_A_STRING, .max_len = IFNAMSIZ }, | |
f7df9823 | 3239 | [OVS_DP_ATTR_STATS] = { NL_POLICY_FOR(struct ovs_dp_stats), |
d6569377 | 3240 | .optional = true }, |
847108dc AZ |
3241 | [OVS_DP_ATTR_MEGAFLOW_STATS] = { |
3242 | NL_POLICY_FOR(struct ovs_dp_megaflow_stats), | |
3243 | .optional = true }, | |
d6569377 BP |
3244 | }; |
3245 | ||
93451a0a | 3246 | dpif_netlink_dp_init(dp); |
d6569377 | 3247 | |
0a2869d5 BP |
3248 | struct ofpbuf b = ofpbuf_const_initializer(buf->data, buf->size); |
3249 | struct nlmsghdr *nlmsg = ofpbuf_try_pull(&b, sizeof *nlmsg); | |
3250 | struct genlmsghdr *genl = ofpbuf_try_pull(&b, sizeof *genl); | |
3251 | struct ovs_header *ovs_header = ofpbuf_try_pull(&b, sizeof *ovs_header); | |
3252 | ||
3253 | struct nlattr *a[ARRAY_SIZE(ovs_datapath_policy)]; | |
df2c07f4 JP |
3254 | if (!nlmsg || !genl || !ovs_header |
3255 | || nlmsg->nlmsg_type != ovs_datapath_family | |
3256 | || !nl_policy_parse(&b, 0, ovs_datapath_policy, a, | |
3257 | ARRAY_SIZE(ovs_datapath_policy))) { | |
d6569377 BP |
3258 | return EINVAL; |
3259 | } | |
d6569377 | 3260 | |
aaff4b55 | 3261 | dp->cmd = genl->cmd; |
df2c07f4 JP |
3262 | dp->dp_ifindex = ovs_header->dp_ifindex; |
3263 | dp->name = nl_attr_get_string(a[OVS_DP_ATTR_NAME]); | |
3264 | if (a[OVS_DP_ATTR_STATS]) { | |
6a54dedc | 3265 | dp->stats = nl_attr_get(a[OVS_DP_ATTR_STATS]); |
d6569377 | 3266 | } |
982b8810 | 3267 | |
847108dc | 3268 | if (a[OVS_DP_ATTR_MEGAFLOW_STATS]) { |
6a54dedc | 3269 | dp->megaflow_stats = nl_attr_get(a[OVS_DP_ATTR_MEGAFLOW_STATS]); |
847108dc AZ |
3270 | } |
3271 | ||
d6569377 BP |
3272 | return 0; |
3273 | } | |
3274 | ||
aaff4b55 | 3275 | /* Appends to 'buf' the Generic Netlink message described by 'dp'. */ |
d6569377 | 3276 | static void |
93451a0a | 3277 | dpif_netlink_dp_to_ofpbuf(const struct dpif_netlink_dp *dp, struct ofpbuf *buf) |
d6569377 | 3278 | { |
df2c07f4 | 3279 | struct ovs_header *ovs_header; |
d6569377 | 3280 | |
df2c07f4 | 3281 | nl_msg_put_genlmsghdr(buf, 0, ovs_datapath_family, |
69685a88 JG |
3282 | NLM_F_REQUEST | NLM_F_ECHO, dp->cmd, |
3283 | OVS_DATAPATH_VERSION); | |
aaff4b55 | 3284 | |
df2c07f4 JP |
3285 | ovs_header = ofpbuf_put_uninit(buf, sizeof *ovs_header); |
3286 | ovs_header->dp_ifindex = dp->dp_ifindex; | |
d6569377 BP |
3287 | |
3288 | if (dp->name) { | |
df2c07f4 | 3289 | nl_msg_put_string(buf, OVS_DP_ATTR_NAME, dp->name); |
d6569377 BP |
3290 | } |
3291 | ||
a24a6574 BP |
3292 | if (dp->upcall_pid) { |
3293 | nl_msg_put_u32(buf, OVS_DP_ATTR_UPCALL_PID, *dp->upcall_pid); | |
3294 | } | |
b063d9f0 | 3295 | |
b7fd5e38 TG |
3296 | if (dp->user_features) { |
3297 | nl_msg_put_u32(buf, OVS_DP_ATTR_USER_FEATURES, dp->user_features); | |
3298 | } | |
3299 | ||
df2c07f4 | 3300 | /* Skip OVS_DP_ATTR_STATS since we never have a reason to serialize it. */ |
d6569377 BP |
3301 | } |
3302 | ||
3303 | /* Clears 'dp' to "empty" values. */ | |
d3d8f1f7 | 3304 | static void |
93451a0a | 3305 | dpif_netlink_dp_init(struct dpif_netlink_dp *dp) |
d6569377 BP |
3306 | { |
3307 | memset(dp, 0, sizeof *dp); | |
d6569377 BP |
3308 | } |
3309 | ||
aaff4b55 | 3310 | static void |
93451a0a | 3311 | dpif_netlink_dp_dump_start(struct nl_dump *dump) |
aaff4b55 | 3312 | { |
93451a0a | 3313 | struct dpif_netlink_dp request; |
aaff4b55 BP |
3314 | struct ofpbuf *buf; |
3315 | ||
93451a0a | 3316 | dpif_netlink_dp_init(&request); |
df2c07f4 | 3317 | request.cmd = OVS_DP_CMD_GET; |
aaff4b55 BP |
3318 | |
3319 | buf = ofpbuf_new(1024); | |
93451a0a | 3320 | dpif_netlink_dp_to_ofpbuf(&request, buf); |
a88b4e04 | 3321 | nl_dump_start(dump, NETLINK_GENERIC, buf); |
aaff4b55 BP |
3322 | ofpbuf_delete(buf); |
3323 | } | |
3324 | ||
d6569377 BP |
3325 | /* Executes 'request' in the kernel datapath. If the command fails, returns a |
3326 | * positive errno value. Otherwise, if 'reply' and 'bufp' are null, returns 0 | |
3327 | * without doing anything else. If 'reply' and 'bufp' are nonnull, then the | |
aaff4b55 BP |
3328 | * result of the command is expected to be of the same form, which is decoded |
3329 | * and stored in '*reply' and '*bufp'. The caller must free '*bufp' when the | |
3330 | * reply is no longer needed ('reply' will contain pointers into '*bufp'). */ | |
d3d8f1f7 | 3331 | static int |
93451a0a AS |
3332 | dpif_netlink_dp_transact(const struct dpif_netlink_dp *request, |
3333 | struct dpif_netlink_dp *reply, struct ofpbuf **bufp) | |
d6569377 | 3334 | { |
aaff4b55 | 3335 | struct ofpbuf *request_buf; |
d6569377 | 3336 | int error; |
d6569377 | 3337 | |
cb22974d | 3338 | ovs_assert((reply != NULL) == (bufp != NULL)); |
d6569377 | 3339 | |
aaff4b55 | 3340 | request_buf = ofpbuf_new(1024); |
93451a0a | 3341 | dpif_netlink_dp_to_ofpbuf(request, request_buf); |
a88b4e04 | 3342 | error = nl_transact(NETLINK_GENERIC, request_buf, bufp); |
aaff4b55 | 3343 | ofpbuf_delete(request_buf); |
d6569377 | 3344 | |
aaff4b55 | 3345 | if (reply) { |
93451a0a | 3346 | dpif_netlink_dp_init(reply); |
aaff4b55 | 3347 | if (!error) { |
93451a0a | 3348 | error = dpif_netlink_dp_from_ofpbuf(reply, *bufp); |
aaff4b55 | 3349 | } |
d6569377 | 3350 | if (error) { |
aaff4b55 BP |
3351 | ofpbuf_delete(*bufp); |
3352 | *bufp = NULL; | |
d6569377 | 3353 | } |
d6569377 BP |
3354 | } |
3355 | return error; | |
3356 | } | |
3357 | ||
3358 | /* Obtains information about 'dpif_' and stores it into '*reply' and '*bufp'. | |
3359 | * The caller must free '*bufp' when the reply is no longer needed ('reply' | |
3360 | * will contain pointers into '*bufp'). */ | |
d3d8f1f7 | 3361 | static int |
93451a0a AS |
3362 | dpif_netlink_dp_get(const struct dpif *dpif_, struct dpif_netlink_dp *reply, |
3363 | struct ofpbuf **bufp) | |
d6569377 | 3364 | { |
93451a0a AS |
3365 | struct dpif_netlink *dpif = dpif_netlink_cast(dpif_); |
3366 | struct dpif_netlink_dp request; | |
d6569377 | 3367 | |
93451a0a | 3368 | dpif_netlink_dp_init(&request); |
df2c07f4 | 3369 | request.cmd = OVS_DP_CMD_GET; |
254f2dc8 | 3370 | request.dp_ifindex = dpif->dp_ifindex; |
d6569377 | 3371 | |
93451a0a | 3372 | return dpif_netlink_dp_transact(&request, reply, bufp); |
d6569377 | 3373 | } |
93451a0a | 3374 | |
df2c07f4 | 3375 | /* Parses the contents of 'buf', which contains a "struct ovs_header" followed |
37a1300c | 3376 | * by Netlink attributes, into 'flow'. Returns 0 if successful, otherwise a |
d6569377 BP |
3377 | * positive errno value. |
3378 | * | |
3379 | * 'flow' will contain pointers into 'buf', so the caller should not free 'buf' | |
3380 | * while 'flow' is still in use. */ | |
3381 | static int | |
93451a0a AS |
3382 | dpif_netlink_flow_from_ofpbuf(struct dpif_netlink_flow *flow, |
3383 | const struct ofpbuf *buf) | |
d6569377 | 3384 | { |
70e5ed6f JS |
3385 | static const struct nl_policy ovs_flow_policy[__OVS_FLOW_ATTR_MAX] = { |
3386 | [OVS_FLOW_ATTR_KEY] = { .type = NL_A_NESTED, .optional = true }, | |
e6cc0bab | 3387 | [OVS_FLOW_ATTR_MASK] = { .type = NL_A_NESTED, .optional = true }, |
df2c07f4 | 3388 | [OVS_FLOW_ATTR_ACTIONS] = { .type = NL_A_NESTED, .optional = true }, |
f7df9823 | 3389 | [OVS_FLOW_ATTR_STATS] = { NL_POLICY_FOR(struct ovs_flow_stats), |
d6569377 | 3390 | .optional = true }, |
df2c07f4 JP |
3391 | [OVS_FLOW_ATTR_TCP_FLAGS] = { .type = NL_A_U8, .optional = true }, |
3392 | [OVS_FLOW_ATTR_USED] = { .type = NL_A_U64, .optional = true }, | |
ab79d262 | 3393 | [OVS_FLOW_ATTR_UFID] = { .type = NL_A_U128, .optional = true }, |
df2c07f4 | 3394 | /* The kernel never uses OVS_FLOW_ATTR_CLEAR. */ |
43f9ac0a | 3395 | /* The kernel never uses OVS_FLOW_ATTR_PROBE. */ |
70e5ed6f | 3396 | /* The kernel never uses OVS_FLOW_ATTR_UFID_FLAGS. */ |
d6569377 BP |
3397 | }; |
3398 | ||
93451a0a | 3399 | dpif_netlink_flow_init(flow); |
d6569377 | 3400 | |
0a2869d5 BP |
3401 | struct ofpbuf b = ofpbuf_const_initializer(buf->data, buf->size); |
3402 | struct nlmsghdr *nlmsg = ofpbuf_try_pull(&b, sizeof *nlmsg); | |
3403 | struct genlmsghdr *genl = ofpbuf_try_pull(&b, sizeof *genl); | |
3404 | struct ovs_header *ovs_header = ofpbuf_try_pull(&b, sizeof *ovs_header); | |
3405 | ||
3406 | struct nlattr *a[ARRAY_SIZE(ovs_flow_policy)]; | |
df2c07f4 JP |
3407 | if (!nlmsg || !genl || !ovs_header |
3408 | || nlmsg->nlmsg_type != ovs_flow_family | |
3409 | || !nl_policy_parse(&b, 0, ovs_flow_policy, a, | |
3410 | ARRAY_SIZE(ovs_flow_policy))) { | |
d6569377 BP |
3411 | return EINVAL; |
3412 | } | |
70e5ed6f JS |
3413 | if (!a[OVS_FLOW_ATTR_KEY] && !a[OVS_FLOW_ATTR_UFID]) { |
3414 | return EINVAL; | |
3415 | } | |
d6569377 | 3416 | |
37a1300c | 3417 | flow->nlmsg_flags = nlmsg->nlmsg_flags; |
df2c07f4 | 3418 | flow->dp_ifindex = ovs_header->dp_ifindex; |
70e5ed6f JS |
3419 | if (a[OVS_FLOW_ATTR_KEY]) { |
3420 | flow->key = nl_attr_get(a[OVS_FLOW_ATTR_KEY]); | |
3421 | flow->key_len = nl_attr_get_size(a[OVS_FLOW_ATTR_KEY]); | |
3422 | } | |
e6cc0bab | 3423 | |
70e5ed6f | 3424 | if (a[OVS_FLOW_ATTR_UFID]) { |
ab79d262 | 3425 | flow->ufid = nl_attr_get_u128(a[OVS_FLOW_ATTR_UFID]); |
70e5ed6f JS |
3426 | flow->ufid_present = true; |
3427 | } | |
e6cc0bab AZ |
3428 | if (a[OVS_FLOW_ATTR_MASK]) { |
3429 | flow->mask = nl_attr_get(a[OVS_FLOW_ATTR_MASK]); | |
3430 | flow->mask_len = nl_attr_get_size(a[OVS_FLOW_ATTR_MASK]); | |
3431 | } | |
df2c07f4 JP |
3432 | if (a[OVS_FLOW_ATTR_ACTIONS]) { |
3433 | flow->actions = nl_attr_get(a[OVS_FLOW_ATTR_ACTIONS]); | |
3434 | flow->actions_len = nl_attr_get_size(a[OVS_FLOW_ATTR_ACTIONS]); | |
d6569377 | 3435 | } |
df2c07f4 JP |
3436 | if (a[OVS_FLOW_ATTR_STATS]) { |
3437 | flow->stats = nl_attr_get(a[OVS_FLOW_ATTR_STATS]); | |
d6569377 | 3438 | } |
df2c07f4 JP |
3439 | if (a[OVS_FLOW_ATTR_TCP_FLAGS]) { |
3440 | flow->tcp_flags = nl_attr_get(a[OVS_FLOW_ATTR_TCP_FLAGS]); | |
d6569377 | 3441 | } |
df2c07f4 JP |
3442 | if (a[OVS_FLOW_ATTR_USED]) { |
3443 | flow->used = nl_attr_get(a[OVS_FLOW_ATTR_USED]); | |
9e980142 | 3444 | } |
d6569377 BP |
3445 | return 0; |
3446 | } | |
3447 | ||
beb75a40 JS |
3448 | |
3449 | /* | |
a8a3eee4 JS |
3450 | * If PACKET_TYPE attribute is present in 'data', it filters PACKET_TYPE out. |
3451 | * If the flow is not Ethernet, the OVS_KEY_ATTR_PACKET_TYPE is converted to | |
3452 | * OVS_KEY_ATTR_ETHERTYPE. Puts 'data' to 'buf'. | |
beb75a40 JS |
3453 | */ |
3454 | static void | |
3455 | put_exclude_packet_type(struct ofpbuf *buf, uint16_t type, | |
3456 | const struct nlattr *data, uint16_t data_len) | |
3457 | { | |
3458 | const struct nlattr *packet_type; | |
3459 | ||
3460 | packet_type = nl_attr_find__(data, data_len, OVS_KEY_ATTR_PACKET_TYPE); | |
3461 | ||
3462 | if (packet_type) { | |
3463 | /* exclude PACKET_TYPE Netlink attribute. */ | |
3464 | ovs_assert(NLA_ALIGN(packet_type->nla_len) == NL_A_U32_SIZE); | |
3465 | size_t packet_type_len = NL_A_U32_SIZE; | |
3466 | size_t first_chunk_size = (uint8_t *)packet_type - (uint8_t *)data; | |
3467 | size_t second_chunk_size = data_len - first_chunk_size | |
3468 | - packet_type_len; | |
beb75a40 | 3469 | struct nlattr *next_attr = nl_attr_next(packet_type); |
1ca5b61b | 3470 | size_t ofs; |
beb75a40 | 3471 | |
1ca5b61b JS |
3472 | ofs = nl_msg_start_nested(buf, type); |
3473 | nl_msg_put(buf, data, first_chunk_size); | |
3474 | nl_msg_put(buf, next_attr, second_chunk_size); | |
a8a3eee4 JS |
3475 | if (!nl_attr_find__(data, data_len, OVS_KEY_ATTR_ETHERNET)) { |
3476 | ovs_be16 pt = pt_ns_type_be(nl_attr_get_be32(packet_type)); | |
3477 | const struct nlattr *nla; | |
3478 | ||
3479 | nla = nl_attr_find(buf, NLA_HDRLEN, OVS_KEY_ATTR_ETHERTYPE); | |
3480 | if (nla) { | |
3481 | ovs_be16 *ethertype; | |
3482 | ||
3483 | ethertype = CONST_CAST(ovs_be16 *, nl_attr_get(nla)); | |
3484 | *ethertype = pt; | |
3485 | } else { | |
3486 | nl_msg_put_be16(buf, OVS_KEY_ATTR_ETHERTYPE, pt); | |
3487 | } | |
3488 | } | |
1ca5b61b | 3489 | nl_msg_end_nested(buf, ofs); |
beb75a40 JS |
3490 | } else { |
3491 | nl_msg_put_unspec(buf, type, data, data_len); | |
3492 | } | |
3493 | } | |
3494 | ||
df2c07f4 | 3495 | /* Appends to 'buf' (which must initially be empty) a "struct ovs_header" |
d6569377 BP |
3496 | * followed by Netlink attributes corresponding to 'flow'. */ |
3497 | static void | |
93451a0a AS |
3498 | dpif_netlink_flow_to_ofpbuf(const struct dpif_netlink_flow *flow, |
3499 | struct ofpbuf *buf) | |
d6569377 | 3500 | { |
df2c07f4 | 3501 | struct ovs_header *ovs_header; |
d6569377 | 3502 | |
df2c07f4 | 3503 | nl_msg_put_genlmsghdr(buf, 0, ovs_flow_family, |
30b44744 | 3504 | NLM_F_REQUEST | flow->nlmsg_flags, |
69685a88 | 3505 | flow->cmd, OVS_FLOW_VERSION); |
37a1300c | 3506 | |
df2c07f4 JP |
3507 | ovs_header = ofpbuf_put_uninit(buf, sizeof *ovs_header); |
3508 | ovs_header->dp_ifindex = flow->dp_ifindex; | |
d6569377 | 3509 | |
70e5ed6f | 3510 | if (flow->ufid_present) { |
ab79d262 | 3511 | nl_msg_put_u128(buf, OVS_FLOW_ATTR_UFID, flow->ufid); |
70e5ed6f JS |
3512 | } |
3513 | if (flow->ufid_terse) { | |
3514 | nl_msg_put_u32(buf, OVS_FLOW_ATTR_UFID_FLAGS, | |
3515 | OVS_UFID_F_OMIT_KEY | OVS_UFID_F_OMIT_MASK | |
3516 | | OVS_UFID_F_OMIT_ACTIONS); | |
3517 | } | |
64bb477f JS |
3518 | if (!flow->ufid_terse || !flow->ufid_present) { |
3519 | if (flow->key_len) { | |
beb75a40 JS |
3520 | put_exclude_packet_type(buf, OVS_FLOW_ATTR_KEY, flow->key, |
3521 | flow->key_len); | |
64bb477f | 3522 | } |
64bb477f | 3523 | if (flow->mask_len) { |
beb75a40 JS |
3524 | put_exclude_packet_type(buf, OVS_FLOW_ATTR_MASK, flow->mask, |
3525 | flow->mask_len); | |
64bb477f JS |
3526 | } |
3527 | if (flow->actions || flow->actions_len) { | |
3528 | nl_msg_put_unspec(buf, OVS_FLOW_ATTR_ACTIONS, | |
3529 | flow->actions, flow->actions_len); | |
3530 | } | |
d6569377 BP |
3531 | } |
3532 | ||
3533 | /* We never need to send these to the kernel. */ | |
cb22974d BP |
3534 | ovs_assert(!flow->stats); |
3535 | ovs_assert(!flow->tcp_flags); | |
3536 | ovs_assert(!flow->used); | |
d6569377 BP |
3537 | |
3538 | if (flow->clear) { | |
df2c07f4 | 3539 | nl_msg_put_flag(buf, OVS_FLOW_ATTR_CLEAR); |
d6569377 | 3540 | } |
43f9ac0a JR |
3541 | if (flow->probe) { |
3542 | nl_msg_put_flag(buf, OVS_FLOW_ATTR_PROBE); | |
3543 | } | |
d6569377 BP |
3544 | } |
3545 | ||
3546 | /* Clears 'flow' to "empty" values. */ | |
d3d8f1f7 | 3547 | static void |
93451a0a | 3548 | dpif_netlink_flow_init(struct dpif_netlink_flow *flow) |
d6569377 BP |
3549 | { |
3550 | memset(flow, 0, sizeof *flow); | |
3551 | } | |
3552 | ||
3553 | /* Executes 'request' in the kernel datapath. If the command fails, returns a | |
3554 | * positive errno value. Otherwise, if 'reply' and 'bufp' are null, returns 0 | |
3555 | * without doing anything else. If 'reply' and 'bufp' are nonnull, then the | |
37a1300c BP |
3556 | * result of the command is expected to be a flow also, which is decoded and |
3557 | * stored in '*reply' and '*bufp'. The caller must free '*bufp' when the reply | |
3558 | * is no longer needed ('reply' will contain pointers into '*bufp'). */ | |
d3d8f1f7 | 3559 | static int |
93451a0a AS |
3560 | dpif_netlink_flow_transact(struct dpif_netlink_flow *request, |
3561 | struct dpif_netlink_flow *reply, | |
3562 | struct ofpbuf **bufp) | |
d6569377 | 3563 | { |
37a1300c | 3564 | struct ofpbuf *request_buf; |
d6569377 | 3565 | int error; |
d6569377 | 3566 | |
cb22974d | 3567 | ovs_assert((reply != NULL) == (bufp != NULL)); |
d6569377 | 3568 | |
30b44744 BP |
3569 | if (reply) { |
3570 | request->nlmsg_flags |= NLM_F_ECHO; | |
3571 | } | |
3572 | ||
37a1300c | 3573 | request_buf = ofpbuf_new(1024); |
93451a0a | 3574 | dpif_netlink_flow_to_ofpbuf(request, request_buf); |
a88b4e04 | 3575 | error = nl_transact(NETLINK_GENERIC, request_buf, bufp); |
37a1300c | 3576 | ofpbuf_delete(request_buf); |
d6569377 | 3577 | |
37a1300c BP |
3578 | if (reply) { |
3579 | if (!error) { | |
93451a0a | 3580 | error = dpif_netlink_flow_from_ofpbuf(reply, *bufp); |
37a1300c | 3581 | } |
d6569377 | 3582 | if (error) { |
93451a0a | 3583 | dpif_netlink_flow_init(reply); |
37a1300c BP |
3584 | ofpbuf_delete(*bufp); |
3585 | *bufp = NULL; | |
d6569377 | 3586 | } |
d6569377 BP |
3587 | } |
3588 | return error; | |
3589 | } | |
3590 | ||
3591 | static void | |
93451a0a AS |
3592 | dpif_netlink_flow_get_stats(const struct dpif_netlink_flow *flow, |
3593 | struct dpif_flow_stats *stats) | |
d6569377 BP |
3594 | { |
3595 | if (flow->stats) { | |
6a54dedc BP |
3596 | stats->n_packets = get_32aligned_u64(&flow->stats->n_packets); |
3597 | stats->n_bytes = get_32aligned_u64(&flow->stats->n_bytes); | |
d6569377 BP |
3598 | } else { |
3599 | stats->n_packets = 0; | |
3600 | stats->n_bytes = 0; | |
3601 | } | |
0e70cdcb | 3602 | stats->used = flow->used ? get_32aligned_u64(flow->used) : 0; |
d6569377 BP |
3603 | stats->tcp_flags = flow->tcp_flags ? *flow->tcp_flags : 0; |
3604 | } | |
e0467f6d | 3605 | |
14b4d2f9 BP |
3606 | /* Logs information about a packet that was recently lost in 'ch' (in |
3607 | * 'dpif_'). */ | |
3608 | static void | |
93451a0a | 3609 | report_loss(struct dpif_netlink *dpif, struct dpif_channel *ch, uint32_t ch_idx, |
1579cf67 | 3610 | uint32_t handler_id) |
14b4d2f9 | 3611 | { |
14b4d2f9 | 3612 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 5); |
14b4d2f9 BP |
3613 | struct ds s; |
3614 | ||
8d675c5a | 3615 | if (VLOG_DROP_WARN(&rl)) { |
14b4d2f9 BP |
3616 | return; |
3617 | } | |
3618 | ||
3619 | ds_init(&s); | |
3620 | if (ch->last_poll != LLONG_MIN) { | |
3621 | ds_put_format(&s, " (last polled %lld ms ago)", | |
3622 | time_msec() - ch->last_poll); | |
3623 | } | |
14b4d2f9 | 3624 | |
1579cf67 | 3625 | VLOG_WARN("%s: lost packet on port channel %u of handler %u", |
9b00386b | 3626 | dpif_name(&dpif->dpif), ch_idx, handler_id); |
14b4d2f9 BP |
3627 | ds_destroy(&s); |
3628 | } |