Commit | Line | Data |
---|---|---|
ccb1352e | 1 | /* |
03f0d916 | 2 | * Copyright (c) 2007-2013 Nicira, Inc. |
ccb1352e JG |
3 | * |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of version 2 of the GNU General Public | |
6 | * License as published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, but | |
9 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
11 | * General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License | |
14 | * along with this program; if not, write to the Free Software | |
15 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA | |
16 | * 02110-1301, USA | |
17 | */ | |
18 | ||
19 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt | |
20 | ||
21 | #include <linux/init.h> | |
22 | #include <linux/module.h> | |
23 | #include <linux/if_arp.h> | |
24 | #include <linux/if_vlan.h> | |
25 | #include <linux/in.h> | |
26 | #include <linux/ip.h> | |
27 | #include <linux/jhash.h> | |
28 | #include <linux/delay.h> | |
29 | #include <linux/time.h> | |
30 | #include <linux/etherdevice.h> | |
31 | #include <linux/genetlink.h> | |
32 | #include <linux/kernel.h> | |
33 | #include <linux/kthread.h> | |
34 | #include <linux/mutex.h> | |
35 | #include <linux/percpu.h> | |
36 | #include <linux/rcupdate.h> | |
37 | #include <linux/tcp.h> | |
38 | #include <linux/udp.h> | |
ccb1352e JG |
39 | #include <linux/ethtool.h> |
40 | #include <linux/wait.h> | |
ccb1352e JG |
41 | #include <asm/div64.h> |
42 | #include <linux/highmem.h> | |
43 | #include <linux/netfilter_bridge.h> | |
44 | #include <linux/netfilter_ipv4.h> | |
45 | #include <linux/inetdevice.h> | |
46 | #include <linux/list.h> | |
8e4e1713 | 47 | #include <linux/lockdep.h> |
ccb1352e JG |
48 | #include <linux/openvswitch.h> |
49 | #include <linux/rculist.h> | |
50 | #include <linux/dmi.h> | |
51 | #include <linux/workqueue.h> | |
52 | #include <net/genetlink.h> | |
46df7b81 PS |
53 | #include <net/net_namespace.h> |
54 | #include <net/netns/generic.h> | |
ccb1352e JG |
55 | |
56 | #include "datapath.h" | |
57 | #include "flow.h" | |
e6445719 | 58 | #include "flow_netlink.h" |
ccb1352e | 59 | #include "vport-internal_dev.h" |
cff63a52 | 60 | #include "vport-netdev.h" |
ccb1352e | 61 | |
8e4e1713 PS |
62 | int ovs_net_id __read_mostly; |
63 | ||
ed661185 TG |
64 | static void ovs_notify(struct sk_buff *skb, struct genl_info *info, |
65 | struct genl_multicast_group *grp) | |
66 | { | |
67 | genl_notify(skb, genl_info_net(info), info->snd_portid, | |
68 | grp->id, info->nlhdr, GFP_KERNEL); | |
69 | } | |
70 | ||
ccb1352e JG |
71 | /** |
72 | * DOC: Locking: | |
73 | * | |
8e4e1713 PS |
74 | * All writes e.g. Writes to device state (add/remove datapath, port, set |
75 | * operations on vports, etc.), Writes to other state (flow table | |
76 | * modifications, set miscellaneous datapath parameters, etc.) are protected | |
77 | * by ovs_lock. | |
ccb1352e JG |
78 | * |
79 | * Reads are protected by RCU. | |
80 | * | |
81 | * There are a few special cases (mostly stats) that have their own | |
82 | * synchronization but they nest under all of above and don't interact with | |
83 | * each other. | |
8e4e1713 PS |
84 | * |
85 | * The RTNL lock nests inside ovs_mutex. | |
ccb1352e JG |
86 | */ |
87 | ||
8e4e1713 PS |
88 | static DEFINE_MUTEX(ovs_mutex); |
89 | ||
90 | void ovs_lock(void) | |
91 | { | |
92 | mutex_lock(&ovs_mutex); | |
93 | } | |
94 | ||
95 | void ovs_unlock(void) | |
96 | { | |
97 | mutex_unlock(&ovs_mutex); | |
98 | } | |
99 | ||
100 | #ifdef CONFIG_LOCKDEP | |
101 | int lockdep_ovsl_is_held(void) | |
102 | { | |
103 | if (debug_locks) | |
104 | return lockdep_is_held(&ovs_mutex); | |
105 | else | |
106 | return 1; | |
107 | } | |
108 | #endif | |
109 | ||
ccb1352e | 110 | static struct vport *new_vport(const struct vport_parms *); |
46df7b81 | 111 | static int queue_gso_packets(struct net *, int dp_ifindex, struct sk_buff *, |
ccb1352e | 112 | const struct dp_upcall_info *); |
46df7b81 PS |
113 | static int queue_userspace_packet(struct net *, int dp_ifindex, |
114 | struct sk_buff *, | |
ccb1352e JG |
115 | const struct dp_upcall_info *); |
116 | ||
8e4e1713 | 117 | /* Must be called with rcu_read_lock or ovs_mutex. */ |
46df7b81 | 118 | static struct datapath *get_dp(struct net *net, int dp_ifindex) |
ccb1352e JG |
119 | { |
120 | struct datapath *dp = NULL; | |
121 | struct net_device *dev; | |
122 | ||
123 | rcu_read_lock(); | |
46df7b81 | 124 | dev = dev_get_by_index_rcu(net, dp_ifindex); |
ccb1352e JG |
125 | if (dev) { |
126 | struct vport *vport = ovs_internal_dev_get_vport(dev); | |
127 | if (vport) | |
128 | dp = vport->dp; | |
129 | } | |
130 | rcu_read_unlock(); | |
131 | ||
132 | return dp; | |
133 | } | |
134 | ||
8e4e1713 | 135 | /* Must be called with rcu_read_lock or ovs_mutex. */ |
ccb1352e JG |
136 | const char *ovs_dp_name(const struct datapath *dp) |
137 | { | |
8e4e1713 | 138 | struct vport *vport = ovs_vport_ovsl_rcu(dp, OVSP_LOCAL); |
ccb1352e JG |
139 | return vport->ops->get_name(vport); |
140 | } | |
141 | ||
142 | static int get_dpifindex(struct datapath *dp) | |
143 | { | |
144 | struct vport *local; | |
145 | int ifindex; | |
146 | ||
147 | rcu_read_lock(); | |
148 | ||
15eac2a7 | 149 | local = ovs_vport_rcu(dp, OVSP_LOCAL); |
ccb1352e | 150 | if (local) |
cff63a52 | 151 | ifindex = netdev_vport_priv(local)->dev->ifindex; |
ccb1352e JG |
152 | else |
153 | ifindex = 0; | |
154 | ||
155 | rcu_read_unlock(); | |
156 | ||
157 | return ifindex; | |
158 | } | |
159 | ||
160 | static void destroy_dp_rcu(struct rcu_head *rcu) | |
161 | { | |
162 | struct datapath *dp = container_of(rcu, struct datapath, rcu); | |
163 | ||
618ed0c8 | 164 | ovs_flow_tbl_destroy(&dp->table); |
ccb1352e | 165 | free_percpu(dp->stats_percpu); |
46df7b81 | 166 | release_net(ovs_dp_get_net(dp)); |
15eac2a7 | 167 | kfree(dp->ports); |
ccb1352e JG |
168 | kfree(dp); |
169 | } | |
170 | ||
15eac2a7 PS |
171 | static struct hlist_head *vport_hash_bucket(const struct datapath *dp, |
172 | u16 port_no) | |
173 | { | |
174 | return &dp->ports[port_no & (DP_VPORT_HASH_BUCKETS - 1)]; | |
175 | } | |
176 | ||
177 | struct vport *ovs_lookup_vport(const struct datapath *dp, u16 port_no) | |
178 | { | |
179 | struct vport *vport; | |
15eac2a7 PS |
180 | struct hlist_head *head; |
181 | ||
182 | head = vport_hash_bucket(dp, port_no); | |
b67bfe0d | 183 | hlist_for_each_entry_rcu(vport, head, dp_hash_node) { |
15eac2a7 PS |
184 | if (vport->port_no == port_no) |
185 | return vport; | |
186 | } | |
187 | return NULL; | |
188 | } | |
189 | ||
8e4e1713 | 190 | /* Called with ovs_mutex. */ |
ccb1352e JG |
191 | static struct vport *new_vport(const struct vport_parms *parms) |
192 | { | |
193 | struct vport *vport; | |
194 | ||
195 | vport = ovs_vport_add(parms); | |
196 | if (!IS_ERR(vport)) { | |
197 | struct datapath *dp = parms->dp; | |
15eac2a7 | 198 | struct hlist_head *head = vport_hash_bucket(dp, vport->port_no); |
ccb1352e | 199 | |
15eac2a7 | 200 | hlist_add_head_rcu(&vport->dp_hash_node, head); |
ccb1352e | 201 | } |
ccb1352e JG |
202 | return vport; |
203 | } | |
204 | ||
ccb1352e JG |
205 | void ovs_dp_detach_port(struct vport *p) |
206 | { | |
8e4e1713 | 207 | ASSERT_OVSL(); |
ccb1352e JG |
208 | |
209 | /* First drop references to device. */ | |
15eac2a7 | 210 | hlist_del_rcu(&p->dp_hash_node); |
ccb1352e JG |
211 | |
212 | /* Then destroy it. */ | |
213 | ovs_vport_del(p); | |
214 | } | |
215 | ||
216 | /* Must be called with rcu_read_lock. */ | |
217 | void ovs_dp_process_received_packet(struct vport *p, struct sk_buff *skb) | |
218 | { | |
219 | struct datapath *dp = p->dp; | |
220 | struct sw_flow *flow; | |
221 | struct dp_stats_percpu *stats; | |
222 | struct sw_flow_key key; | |
223 | u64 *stats_counter; | |
1bd7116f | 224 | u32 n_mask_hit; |
ccb1352e | 225 | int error; |
ccb1352e | 226 | |
404f2f10 | 227 | stats = this_cpu_ptr(dp->stats_percpu); |
ccb1352e JG |
228 | |
229 | /* Extract flow from 'skb' into 'key'. */ | |
03f0d916 | 230 | error = ovs_flow_extract(skb, p->port_no, &key); |
ccb1352e JG |
231 | if (unlikely(error)) { |
232 | kfree_skb(skb); | |
233 | return; | |
234 | } | |
235 | ||
236 | /* Look up flow. */ | |
1bd7116f | 237 | flow = ovs_flow_tbl_lookup(&dp->table, &key, &n_mask_hit); |
ccb1352e JG |
238 | if (unlikely(!flow)) { |
239 | struct dp_upcall_info upcall; | |
240 | ||
241 | upcall.cmd = OVS_PACKET_CMD_MISS; | |
242 | upcall.key = &key; | |
243 | upcall.userdata = NULL; | |
15e47304 | 244 | upcall.portid = p->upcall_portid; |
ccb1352e JG |
245 | ovs_dp_upcall(dp, skb, &upcall); |
246 | consume_skb(skb); | |
247 | stats_counter = &stats->n_missed; | |
248 | goto out; | |
249 | } | |
250 | ||
251 | OVS_CB(skb)->flow = flow; | |
03f0d916 | 252 | OVS_CB(skb)->pkt_key = &key; |
ccb1352e JG |
253 | |
254 | stats_counter = &stats->n_hit; | |
255 | ovs_flow_used(OVS_CB(skb)->flow, skb); | |
256 | ovs_execute_actions(dp, skb); | |
257 | ||
258 | out: | |
259 | /* Update datapath statistics. */ | |
260 | u64_stats_update_begin(&stats->sync); | |
261 | (*stats_counter)++; | |
1bd7116f | 262 | stats->n_mask_hit += n_mask_hit; |
ccb1352e JG |
263 | u64_stats_update_end(&stats->sync); |
264 | } | |
265 | ||
266 | static struct genl_family dp_packet_genl_family = { | |
267 | .id = GENL_ID_GENERATE, | |
268 | .hdrsize = sizeof(struct ovs_header), | |
269 | .name = OVS_PACKET_FAMILY, | |
270 | .version = OVS_PACKET_VERSION, | |
46df7b81 | 271 | .maxattr = OVS_PACKET_ATTR_MAX, |
3a4e0d6a PS |
272 | .netnsok = true, |
273 | .parallel_ops = true, | |
ccb1352e JG |
274 | }; |
275 | ||
276 | int ovs_dp_upcall(struct datapath *dp, struct sk_buff *skb, | |
46df7b81 | 277 | const struct dp_upcall_info *upcall_info) |
ccb1352e JG |
278 | { |
279 | struct dp_stats_percpu *stats; | |
280 | int dp_ifindex; | |
281 | int err; | |
282 | ||
15e47304 | 283 | if (upcall_info->portid == 0) { |
ccb1352e JG |
284 | err = -ENOTCONN; |
285 | goto err; | |
286 | } | |
287 | ||
288 | dp_ifindex = get_dpifindex(dp); | |
289 | if (!dp_ifindex) { | |
290 | err = -ENODEV; | |
291 | goto err; | |
292 | } | |
293 | ||
294 | if (!skb_is_gso(skb)) | |
46df7b81 | 295 | err = queue_userspace_packet(ovs_dp_get_net(dp), dp_ifindex, skb, upcall_info); |
ccb1352e | 296 | else |
46df7b81 | 297 | err = queue_gso_packets(ovs_dp_get_net(dp), dp_ifindex, skb, upcall_info); |
ccb1352e JG |
298 | if (err) |
299 | goto err; | |
300 | ||
301 | return 0; | |
302 | ||
303 | err: | |
404f2f10 | 304 | stats = this_cpu_ptr(dp->stats_percpu); |
ccb1352e JG |
305 | |
306 | u64_stats_update_begin(&stats->sync); | |
307 | stats->n_lost++; | |
308 | u64_stats_update_end(&stats->sync); | |
309 | ||
310 | return err; | |
311 | } | |
312 | ||
46df7b81 PS |
313 | static int queue_gso_packets(struct net *net, int dp_ifindex, |
314 | struct sk_buff *skb, | |
ccb1352e JG |
315 | const struct dp_upcall_info *upcall_info) |
316 | { | |
a1b5d0dd | 317 | unsigned short gso_type = skb_shinfo(skb)->gso_type; |
ccb1352e JG |
318 | struct dp_upcall_info later_info; |
319 | struct sw_flow_key later_key; | |
320 | struct sk_buff *segs, *nskb; | |
321 | int err; | |
322 | ||
12b0004d | 323 | segs = __skb_gso_segment(skb, NETIF_F_SG | NETIF_F_HW_CSUM, false); |
92e5dfc3 PS |
324 | if (IS_ERR(segs)) |
325 | return PTR_ERR(segs); | |
ccb1352e JG |
326 | |
327 | /* Queue all of the segments. */ | |
328 | skb = segs; | |
329 | do { | |
46df7b81 | 330 | err = queue_userspace_packet(net, dp_ifindex, skb, upcall_info); |
ccb1352e JG |
331 | if (err) |
332 | break; | |
333 | ||
a1b5d0dd | 334 | if (skb == segs && gso_type & SKB_GSO_UDP) { |
ccb1352e JG |
335 | /* The initial flow key extracted by ovs_flow_extract() |
336 | * in this case is for a first fragment, so we need to | |
337 | * properly mark later fragments. | |
338 | */ | |
339 | later_key = *upcall_info->key; | |
340 | later_key.ip.frag = OVS_FRAG_TYPE_LATER; | |
341 | ||
342 | later_info = *upcall_info; | |
343 | later_info.key = &later_key; | |
344 | upcall_info = &later_info; | |
345 | } | |
346 | } while ((skb = skb->next)); | |
347 | ||
348 | /* Free all of the segments. */ | |
349 | skb = segs; | |
350 | do { | |
351 | nskb = skb->next; | |
352 | if (err) | |
353 | kfree_skb(skb); | |
354 | else | |
355 | consume_skb(skb); | |
356 | } while ((skb = nskb)); | |
357 | return err; | |
358 | } | |
359 | ||
c3ff8cfe TG |
360 | static size_t key_attr_size(void) |
361 | { | |
362 | return nla_total_size(4) /* OVS_KEY_ATTR_PRIORITY */ | |
7d5437c7 PS |
363 | + nla_total_size(0) /* OVS_KEY_ATTR_TUNNEL */ |
364 | + nla_total_size(8) /* OVS_TUNNEL_KEY_ATTR_ID */ | |
365 | + nla_total_size(4) /* OVS_TUNNEL_KEY_ATTR_IPV4_SRC */ | |
366 | + nla_total_size(4) /* OVS_TUNNEL_KEY_ATTR_IPV4_DST */ | |
367 | + nla_total_size(1) /* OVS_TUNNEL_KEY_ATTR_TOS */ | |
368 | + nla_total_size(1) /* OVS_TUNNEL_KEY_ATTR_TTL */ | |
369 | + nla_total_size(0) /* OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT */ | |
370 | + nla_total_size(0) /* OVS_TUNNEL_KEY_ATTR_CSUM */ | |
c3ff8cfe TG |
371 | + nla_total_size(4) /* OVS_KEY_ATTR_IN_PORT */ |
372 | + nla_total_size(4) /* OVS_KEY_ATTR_SKB_MARK */ | |
373 | + nla_total_size(12) /* OVS_KEY_ATTR_ETHERNET */ | |
374 | + nla_total_size(2) /* OVS_KEY_ATTR_ETHERTYPE */ | |
375 | + nla_total_size(4) /* OVS_KEY_ATTR_8021Q */ | |
376 | + nla_total_size(0) /* OVS_KEY_ATTR_ENCAP */ | |
377 | + nla_total_size(2) /* OVS_KEY_ATTR_ETHERTYPE */ | |
378 | + nla_total_size(40) /* OVS_KEY_ATTR_IPV6 */ | |
379 | + nla_total_size(2) /* OVS_KEY_ATTR_ICMPV6 */ | |
380 | + nla_total_size(28); /* OVS_KEY_ATTR_ND */ | |
381 | } | |
382 | ||
383 | static size_t upcall_msg_size(const struct sk_buff *skb, | |
384 | const struct nlattr *userdata) | |
385 | { | |
386 | size_t size = NLMSG_ALIGN(sizeof(struct ovs_header)) | |
387 | + nla_total_size(skb->len) /* OVS_PACKET_ATTR_PACKET */ | |
388 | + nla_total_size(key_attr_size()); /* OVS_PACKET_ATTR_KEY */ | |
389 | ||
390 | /* OVS_PACKET_ATTR_USERDATA */ | |
391 | if (userdata) | |
392 | size += NLA_ALIGN(userdata->nla_len); | |
393 | ||
394 | return size; | |
395 | } | |
396 | ||
46df7b81 PS |
397 | static int queue_userspace_packet(struct net *net, int dp_ifindex, |
398 | struct sk_buff *skb, | |
ccb1352e JG |
399 | const struct dp_upcall_info *upcall_info) |
400 | { | |
401 | struct ovs_header *upcall; | |
402 | struct sk_buff *nskb = NULL; | |
403 | struct sk_buff *user_skb; /* to be queued to userspace */ | |
404 | struct nlattr *nla; | |
ccb1352e JG |
405 | int err; |
406 | ||
407 | if (vlan_tx_tag_present(skb)) { | |
408 | nskb = skb_clone(skb, GFP_ATOMIC); | |
409 | if (!nskb) | |
410 | return -ENOMEM; | |
411 | ||
86a9bad3 | 412 | nskb = __vlan_put_tag(nskb, nskb->vlan_proto, vlan_tx_tag_get(nskb)); |
8aa51d64 | 413 | if (!nskb) |
ccb1352e JG |
414 | return -ENOMEM; |
415 | ||
416 | nskb->vlan_tci = 0; | |
417 | skb = nskb; | |
418 | } | |
419 | ||
420 | if (nla_attr_size(skb->len) > USHRT_MAX) { | |
421 | err = -EFBIG; | |
422 | goto out; | |
423 | } | |
424 | ||
c3ff8cfe | 425 | user_skb = genlmsg_new(upcall_msg_size(skb, upcall_info->userdata), GFP_ATOMIC); |
ccb1352e JG |
426 | if (!user_skb) { |
427 | err = -ENOMEM; | |
428 | goto out; | |
429 | } | |
430 | ||
431 | upcall = genlmsg_put(user_skb, 0, 0, &dp_packet_genl_family, | |
432 | 0, upcall_info->cmd); | |
433 | upcall->dp_ifindex = dp_ifindex; | |
434 | ||
435 | nla = nla_nest_start(user_skb, OVS_PACKET_ATTR_KEY); | |
e6445719 | 436 | ovs_nla_put_flow(upcall_info->key, upcall_info->key, user_skb); |
ccb1352e JG |
437 | nla_nest_end(user_skb, nla); |
438 | ||
439 | if (upcall_info->userdata) | |
4490108b BP |
440 | __nla_put(user_skb, OVS_PACKET_ATTR_USERDATA, |
441 | nla_len(upcall_info->userdata), | |
442 | nla_data(upcall_info->userdata)); | |
ccb1352e JG |
443 | |
444 | nla = __nla_reserve(user_skb, OVS_PACKET_ATTR_PACKET, skb->len); | |
445 | ||
446 | skb_copy_and_csum_dev(skb, nla_data(nla)); | |
447 | ||
a15ff76c | 448 | genlmsg_end(user_skb, upcall); |
15e47304 | 449 | err = genlmsg_unicast(net, user_skb, upcall_info->portid); |
ccb1352e JG |
450 | |
451 | out: | |
452 | kfree_skb(nskb); | |
453 | return err; | |
454 | } | |
455 | ||
ccb1352e JG |
456 | static void clear_stats(struct sw_flow *flow) |
457 | { | |
458 | flow->used = 0; | |
459 | flow->tcp_flags = 0; | |
460 | flow->packet_count = 0; | |
461 | flow->byte_count = 0; | |
462 | } | |
463 | ||
464 | static int ovs_packet_cmd_execute(struct sk_buff *skb, struct genl_info *info) | |
465 | { | |
466 | struct ovs_header *ovs_header = info->userhdr; | |
467 | struct nlattr **a = info->attrs; | |
468 | struct sw_flow_actions *acts; | |
469 | struct sk_buff *packet; | |
470 | struct sw_flow *flow; | |
471 | struct datapath *dp; | |
472 | struct ethhdr *eth; | |
473 | int len; | |
474 | int err; | |
ccb1352e JG |
475 | |
476 | err = -EINVAL; | |
477 | if (!a[OVS_PACKET_ATTR_PACKET] || !a[OVS_PACKET_ATTR_KEY] || | |
dded45fc | 478 | !a[OVS_PACKET_ATTR_ACTIONS]) |
ccb1352e JG |
479 | goto err; |
480 | ||
481 | len = nla_len(a[OVS_PACKET_ATTR_PACKET]); | |
482 | packet = __dev_alloc_skb(NET_IP_ALIGN + len, GFP_KERNEL); | |
483 | err = -ENOMEM; | |
484 | if (!packet) | |
485 | goto err; | |
486 | skb_reserve(packet, NET_IP_ALIGN); | |
487 | ||
32686a9d | 488 | nla_memcpy(__skb_put(packet, len), a[OVS_PACKET_ATTR_PACKET], len); |
ccb1352e JG |
489 | |
490 | skb_reset_mac_header(packet); | |
491 | eth = eth_hdr(packet); | |
492 | ||
493 | /* Normally, setting the skb 'protocol' field would be handled by a | |
494 | * call to eth_type_trans(), but it assumes there's a sending | |
495 | * device, which we may not have. */ | |
e5c5d22e | 496 | if (ntohs(eth->h_proto) >= ETH_P_802_3_MIN) |
ccb1352e JG |
497 | packet->protocol = eth->h_proto; |
498 | else | |
499 | packet->protocol = htons(ETH_P_802_2); | |
500 | ||
501 | /* Build an sw_flow for sending this packet. */ | |
502 | flow = ovs_flow_alloc(); | |
503 | err = PTR_ERR(flow); | |
504 | if (IS_ERR(flow)) | |
505 | goto err_kfree_skb; | |
506 | ||
03f0d916 | 507 | err = ovs_flow_extract(packet, -1, &flow->key); |
ccb1352e JG |
508 | if (err) |
509 | goto err_flow_free; | |
510 | ||
e6445719 | 511 | err = ovs_nla_get_flow_metadata(flow, a[OVS_PACKET_ATTR_KEY]); |
ccb1352e JG |
512 | if (err) |
513 | goto err_flow_free; | |
e6445719 | 514 | acts = ovs_nla_alloc_flow_actions(nla_len(a[OVS_PACKET_ATTR_ACTIONS])); |
ccb1352e JG |
515 | err = PTR_ERR(acts); |
516 | if (IS_ERR(acts)) | |
517 | goto err_flow_free; | |
74f84a57 | 518 | |
e6445719 PS |
519 | err = ovs_nla_copy_actions(a[OVS_PACKET_ATTR_ACTIONS], |
520 | &flow->key, 0, &acts); | |
ccb1352e | 521 | rcu_assign_pointer(flow->sf_acts, acts); |
74f84a57 PS |
522 | if (err) |
523 | goto err_flow_free; | |
ccb1352e JG |
524 | |
525 | OVS_CB(packet)->flow = flow; | |
03f0d916 | 526 | OVS_CB(packet)->pkt_key = &flow->key; |
ccb1352e | 527 | packet->priority = flow->key.phy.priority; |
39c7caeb | 528 | packet->mark = flow->key.phy.skb_mark; |
ccb1352e JG |
529 | |
530 | rcu_read_lock(); | |
46df7b81 | 531 | dp = get_dp(sock_net(skb->sk), ovs_header->dp_ifindex); |
ccb1352e JG |
532 | err = -ENODEV; |
533 | if (!dp) | |
534 | goto err_unlock; | |
535 | ||
536 | local_bh_disable(); | |
537 | err = ovs_execute_actions(dp, packet); | |
538 | local_bh_enable(); | |
539 | rcu_read_unlock(); | |
540 | ||
03f0d916 | 541 | ovs_flow_free(flow, false); |
ccb1352e JG |
542 | return err; |
543 | ||
544 | err_unlock: | |
545 | rcu_read_unlock(); | |
546 | err_flow_free: | |
03f0d916 | 547 | ovs_flow_free(flow, false); |
ccb1352e JG |
548 | err_kfree_skb: |
549 | kfree_skb(packet); | |
550 | err: | |
551 | return err; | |
552 | } | |
553 | ||
554 | static const struct nla_policy packet_policy[OVS_PACKET_ATTR_MAX + 1] = { | |
dded45fc | 555 | [OVS_PACKET_ATTR_PACKET] = { .len = ETH_HLEN }, |
ccb1352e JG |
556 | [OVS_PACKET_ATTR_KEY] = { .type = NLA_NESTED }, |
557 | [OVS_PACKET_ATTR_ACTIONS] = { .type = NLA_NESTED }, | |
558 | }; | |
559 | ||
4534de83 | 560 | static const struct genl_ops dp_packet_genl_ops[] = { |
ccb1352e JG |
561 | { .cmd = OVS_PACKET_CMD_EXECUTE, |
562 | .flags = GENL_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */ | |
563 | .policy = packet_policy, | |
564 | .doit = ovs_packet_cmd_execute | |
565 | } | |
566 | }; | |
567 | ||
1bd7116f AZ |
568 | static void get_dp_stats(struct datapath *dp, struct ovs_dp_stats *stats, |
569 | struct ovs_dp_megaflow_stats *mega_stats) | |
ccb1352e JG |
570 | { |
571 | int i; | |
ccb1352e | 572 | |
1bd7116f AZ |
573 | memset(mega_stats, 0, sizeof(*mega_stats)); |
574 | ||
b637e498 | 575 | stats->n_flows = ovs_flow_tbl_count(&dp->table); |
1bd7116f | 576 | mega_stats->n_masks = ovs_flow_tbl_num_masks(&dp->table); |
ccb1352e JG |
577 | |
578 | stats->n_hit = stats->n_missed = stats->n_lost = 0; | |
1bd7116f | 579 | |
ccb1352e JG |
580 | for_each_possible_cpu(i) { |
581 | const struct dp_stats_percpu *percpu_stats; | |
582 | struct dp_stats_percpu local_stats; | |
583 | unsigned int start; | |
584 | ||
585 | percpu_stats = per_cpu_ptr(dp->stats_percpu, i); | |
586 | ||
587 | do { | |
588 | start = u64_stats_fetch_begin_bh(&percpu_stats->sync); | |
589 | local_stats = *percpu_stats; | |
590 | } while (u64_stats_fetch_retry_bh(&percpu_stats->sync, start)); | |
591 | ||
592 | stats->n_hit += local_stats.n_hit; | |
593 | stats->n_missed += local_stats.n_missed; | |
594 | stats->n_lost += local_stats.n_lost; | |
1bd7116f | 595 | mega_stats->n_mask_hit += local_stats.n_mask_hit; |
ccb1352e JG |
596 | } |
597 | } | |
598 | ||
599 | static const struct nla_policy flow_policy[OVS_FLOW_ATTR_MAX + 1] = { | |
600 | [OVS_FLOW_ATTR_KEY] = { .type = NLA_NESTED }, | |
601 | [OVS_FLOW_ATTR_ACTIONS] = { .type = NLA_NESTED }, | |
602 | [OVS_FLOW_ATTR_CLEAR] = { .type = NLA_FLAG }, | |
603 | }; | |
604 | ||
605 | static struct genl_family dp_flow_genl_family = { | |
606 | .id = GENL_ID_GENERATE, | |
607 | .hdrsize = sizeof(struct ovs_header), | |
608 | .name = OVS_FLOW_FAMILY, | |
609 | .version = OVS_FLOW_VERSION, | |
46df7b81 | 610 | .maxattr = OVS_FLOW_ATTR_MAX, |
3a4e0d6a PS |
611 | .netnsok = true, |
612 | .parallel_ops = true, | |
ccb1352e JG |
613 | }; |
614 | ||
615 | static struct genl_multicast_group ovs_dp_flow_multicast_group = { | |
616 | .name = OVS_FLOW_MCGROUP | |
617 | }; | |
618 | ||
c3ff8cfe TG |
619 | static size_t ovs_flow_cmd_msg_size(const struct sw_flow_actions *acts) |
620 | { | |
621 | return NLMSG_ALIGN(sizeof(struct ovs_header)) | |
622 | + nla_total_size(key_attr_size()) /* OVS_FLOW_ATTR_KEY */ | |
03f0d916 | 623 | + nla_total_size(key_attr_size()) /* OVS_FLOW_ATTR_MASK */ |
c3ff8cfe TG |
624 | + nla_total_size(sizeof(struct ovs_flow_stats)) /* OVS_FLOW_ATTR_STATS */ |
625 | + nla_total_size(1) /* OVS_FLOW_ATTR_TCP_FLAGS */ | |
626 | + nla_total_size(8) /* OVS_FLOW_ATTR_USED */ | |
627 | + nla_total_size(acts->actions_len); /* OVS_FLOW_ATTR_ACTIONS */ | |
628 | } | |
629 | ||
8e4e1713 | 630 | /* Called with ovs_mutex. */ |
ccb1352e | 631 | static int ovs_flow_cmd_fill_info(struct sw_flow *flow, struct datapath *dp, |
15e47304 | 632 | struct sk_buff *skb, u32 portid, |
ccb1352e JG |
633 | u32 seq, u32 flags, u8 cmd) |
634 | { | |
635 | const int skb_orig_len = skb->len; | |
74f84a57 | 636 | struct nlattr *start; |
ccb1352e JG |
637 | struct ovs_flow_stats stats; |
638 | struct ovs_header *ovs_header; | |
639 | struct nlattr *nla; | |
640 | unsigned long used; | |
641 | u8 tcp_flags; | |
642 | int err; | |
643 | ||
15e47304 | 644 | ovs_header = genlmsg_put(skb, portid, seq, &dp_flow_genl_family, flags, cmd); |
ccb1352e JG |
645 | if (!ovs_header) |
646 | return -EMSGSIZE; | |
647 | ||
648 | ovs_header->dp_ifindex = get_dpifindex(dp); | |
649 | ||
03f0d916 | 650 | /* Fill flow key. */ |
ccb1352e JG |
651 | nla = nla_nest_start(skb, OVS_FLOW_ATTR_KEY); |
652 | if (!nla) | |
653 | goto nla_put_failure; | |
03f0d916 | 654 | |
e6445719 | 655 | err = ovs_nla_put_flow(&flow->unmasked_key, &flow->unmasked_key, skb); |
03f0d916 AZ |
656 | if (err) |
657 | goto error; | |
658 | nla_nest_end(skb, nla); | |
659 | ||
660 | nla = nla_nest_start(skb, OVS_FLOW_ATTR_MASK); | |
661 | if (!nla) | |
662 | goto nla_put_failure; | |
663 | ||
e6445719 | 664 | err = ovs_nla_put_flow(&flow->key, &flow->mask->key, skb); |
ccb1352e JG |
665 | if (err) |
666 | goto error; | |
03f0d916 | 667 | |
ccb1352e JG |
668 | nla_nest_end(skb, nla); |
669 | ||
670 | spin_lock_bh(&flow->lock); | |
671 | used = flow->used; | |
672 | stats.n_packets = flow->packet_count; | |
673 | stats.n_bytes = flow->byte_count; | |
df23e9f6 | 674 | tcp_flags = (u8)ntohs(flow->tcp_flags); |
ccb1352e JG |
675 | spin_unlock_bh(&flow->lock); |
676 | ||
028d6a67 DM |
677 | if (used && |
678 | nla_put_u64(skb, OVS_FLOW_ATTR_USED, ovs_flow_used_time(used))) | |
679 | goto nla_put_failure; | |
ccb1352e | 680 | |
028d6a67 DM |
681 | if (stats.n_packets && |
682 | nla_put(skb, OVS_FLOW_ATTR_STATS, | |
683 | sizeof(struct ovs_flow_stats), &stats)) | |
684 | goto nla_put_failure; | |
ccb1352e | 685 | |
028d6a67 DM |
686 | if (tcp_flags && |
687 | nla_put_u8(skb, OVS_FLOW_ATTR_TCP_FLAGS, tcp_flags)) | |
688 | goto nla_put_failure; | |
ccb1352e JG |
689 | |
690 | /* If OVS_FLOW_ATTR_ACTIONS doesn't fit, skip dumping the actions if | |
691 | * this is the first flow to be dumped into 'skb'. This is unusual for | |
692 | * Netlink but individual action lists can be longer than | |
693 | * NLMSG_GOODSIZE and thus entirely undumpable if we didn't do this. | |
694 | * The userspace caller can always fetch the actions separately if it | |
695 | * really wants them. (Most userspace callers in fact don't care.) | |
696 | * | |
697 | * This can only fail for dump operations because the skb is always | |
698 | * properly sized for single flows. | |
699 | */ | |
74f84a57 PS |
700 | start = nla_nest_start(skb, OVS_FLOW_ATTR_ACTIONS); |
701 | if (start) { | |
d57170b1 PS |
702 | const struct sw_flow_actions *sf_acts; |
703 | ||
704 | sf_acts = rcu_dereference_check(flow->sf_acts, | |
705 | lockdep_ovsl_is_held()); | |
706 | ||
e6445719 PS |
707 | err = ovs_nla_put_actions(sf_acts->actions, |
708 | sf_acts->actions_len, skb); | |
74f84a57 PS |
709 | if (!err) |
710 | nla_nest_end(skb, start); | |
711 | else { | |
712 | if (skb_orig_len) | |
713 | goto error; | |
714 | ||
715 | nla_nest_cancel(skb, start); | |
716 | } | |
717 | } else if (skb_orig_len) | |
718 | goto nla_put_failure; | |
ccb1352e JG |
719 | |
720 | return genlmsg_end(skb, ovs_header); | |
721 | ||
722 | nla_put_failure: | |
723 | err = -EMSGSIZE; | |
724 | error: | |
725 | genlmsg_cancel(skb, ovs_header); | |
726 | return err; | |
727 | } | |
728 | ||
729 | static struct sk_buff *ovs_flow_cmd_alloc_info(struct sw_flow *flow) | |
730 | { | |
731 | const struct sw_flow_actions *sf_acts; | |
ccb1352e | 732 | |
8e4e1713 | 733 | sf_acts = ovsl_dereference(flow->sf_acts); |
ccb1352e | 734 | |
c3ff8cfe | 735 | return genlmsg_new(ovs_flow_cmd_msg_size(sf_acts), GFP_KERNEL); |
ccb1352e JG |
736 | } |
737 | ||
738 | static struct sk_buff *ovs_flow_cmd_build_info(struct sw_flow *flow, | |
739 | struct datapath *dp, | |
15e47304 | 740 | u32 portid, u32 seq, u8 cmd) |
ccb1352e JG |
741 | { |
742 | struct sk_buff *skb; | |
743 | int retval; | |
744 | ||
745 | skb = ovs_flow_cmd_alloc_info(flow); | |
746 | if (!skb) | |
747 | return ERR_PTR(-ENOMEM); | |
748 | ||
15e47304 | 749 | retval = ovs_flow_cmd_fill_info(flow, dp, skb, portid, seq, 0, cmd); |
ccb1352e JG |
750 | BUG_ON(retval < 0); |
751 | return skb; | |
752 | } | |
753 | ||
1bd7116f AZ |
754 | static struct sw_flow *__ovs_flow_tbl_lookup(struct flow_table *tbl, |
755 | const struct sw_flow_key *key) | |
756 | { | |
757 | u32 __always_unused n_mask_hit; | |
758 | ||
759 | return ovs_flow_tbl_lookup(tbl, key, &n_mask_hit); | |
760 | } | |
761 | ||
ccb1352e JG |
762 | static int ovs_flow_cmd_new_or_set(struct sk_buff *skb, struct genl_info *info) |
763 | { | |
764 | struct nlattr **a = info->attrs; | |
765 | struct ovs_header *ovs_header = info->userhdr; | |
03f0d916 AZ |
766 | struct sw_flow_key key, masked_key; |
767 | struct sw_flow *flow = NULL; | |
768 | struct sw_flow_mask mask; | |
ccb1352e JG |
769 | struct sk_buff *reply; |
770 | struct datapath *dp; | |
74f84a57 | 771 | struct sw_flow_actions *acts = NULL; |
03f0d916 | 772 | struct sw_flow_match match; |
ccb1352e | 773 | int error; |
ccb1352e JG |
774 | |
775 | /* Extract key. */ | |
776 | error = -EINVAL; | |
777 | if (!a[OVS_FLOW_ATTR_KEY]) | |
778 | goto error; | |
03f0d916 AZ |
779 | |
780 | ovs_match_init(&match, &key, &mask); | |
e6445719 PS |
781 | error = ovs_nla_get_match(&match, |
782 | a[OVS_FLOW_ATTR_KEY], a[OVS_FLOW_ATTR_MASK]); | |
ccb1352e JG |
783 | if (error) |
784 | goto error; | |
785 | ||
786 | /* Validate actions. */ | |
787 | if (a[OVS_FLOW_ATTR_ACTIONS]) { | |
e6445719 | 788 | acts = ovs_nla_alloc_flow_actions(nla_len(a[OVS_FLOW_ATTR_ACTIONS])); |
74f84a57 PS |
789 | error = PTR_ERR(acts); |
790 | if (IS_ERR(acts)) | |
ccb1352e | 791 | goto error; |
74f84a57 | 792 | |
e6445719 PS |
793 | ovs_flow_mask_key(&masked_key, &key, &mask); |
794 | error = ovs_nla_copy_actions(a[OVS_FLOW_ATTR_ACTIONS], | |
795 | &masked_key, 0, &acts); | |
03f0d916 AZ |
796 | if (error) { |
797 | OVS_NLERR("Flow actions may not be safe on all matching packets.\n"); | |
74f84a57 | 798 | goto err_kfree; |
03f0d916 | 799 | } |
ccb1352e JG |
800 | } else if (info->genlhdr->cmd == OVS_FLOW_CMD_NEW) { |
801 | error = -EINVAL; | |
802 | goto error; | |
803 | } | |
804 | ||
8e4e1713 | 805 | ovs_lock(); |
46df7b81 | 806 | dp = get_dp(sock_net(skb->sk), ovs_header->dp_ifindex); |
ccb1352e JG |
807 | error = -ENODEV; |
808 | if (!dp) | |
8e4e1713 | 809 | goto err_unlock_ovs; |
ccb1352e | 810 | |
03f0d916 | 811 | /* Check if this is a duplicate flow */ |
1bd7116f | 812 | flow = __ovs_flow_tbl_lookup(&dp->table, &key); |
ccb1352e | 813 | if (!flow) { |
ccb1352e JG |
814 | /* Bail out if we're not allowed to create a new flow. */ |
815 | error = -ENOENT; | |
816 | if (info->genlhdr->cmd == OVS_FLOW_CMD_SET) | |
8e4e1713 | 817 | goto err_unlock_ovs; |
ccb1352e | 818 | |
ccb1352e JG |
819 | /* Allocate flow. */ |
820 | flow = ovs_flow_alloc(); | |
821 | if (IS_ERR(flow)) { | |
822 | error = PTR_ERR(flow); | |
8e4e1713 | 823 | goto err_unlock_ovs; |
ccb1352e | 824 | } |
ccb1352e JG |
825 | clear_stats(flow); |
826 | ||
03f0d916 AZ |
827 | flow->key = masked_key; |
828 | flow->unmasked_key = key; | |
ccb1352e JG |
829 | rcu_assign_pointer(flow->sf_acts, acts); |
830 | ||
831 | /* Put flow in bucket. */ | |
618ed0c8 PS |
832 | error = ovs_flow_tbl_insert(&dp->table, flow, &mask); |
833 | if (error) { | |
834 | acts = NULL; | |
835 | goto err_flow_free; | |
836 | } | |
ccb1352e | 837 | |
15e47304 | 838 | reply = ovs_flow_cmd_build_info(flow, dp, info->snd_portid, |
03f0d916 | 839 | info->snd_seq, OVS_FLOW_CMD_NEW); |
ccb1352e JG |
840 | } else { |
841 | /* We found a matching flow. */ | |
842 | struct sw_flow_actions *old_acts; | |
ccb1352e JG |
843 | |
844 | /* Bail out if we're not allowed to modify an existing flow. | |
845 | * We accept NLM_F_CREATE in place of the intended NLM_F_EXCL | |
846 | * because Generic Netlink treats the latter as a dump | |
847 | * request. We also accept NLM_F_EXCL in case that bug ever | |
848 | * gets fixed. | |
849 | */ | |
850 | error = -EEXIST; | |
851 | if (info->genlhdr->cmd == OVS_FLOW_CMD_NEW && | |
852 | info->nlhdr->nlmsg_flags & (NLM_F_CREATE | NLM_F_EXCL)) | |
8e4e1713 | 853 | goto err_unlock_ovs; |
ccb1352e | 854 | |
03f0d916 AZ |
855 | /* The unmasked key has to be the same for flow updates. */ |
856 | error = -EINVAL; | |
e6445719 | 857 | if (!ovs_flow_cmp_unmasked_key(flow, &match)) { |
03f0d916 AZ |
858 | OVS_NLERR("Flow modification message rejected, unmasked key does not match.\n"); |
859 | goto err_unlock_ovs; | |
860 | } | |
861 | ||
ccb1352e | 862 | /* Update actions. */ |
8e4e1713 | 863 | old_acts = ovsl_dereference(flow->sf_acts); |
74f84a57 | 864 | rcu_assign_pointer(flow->sf_acts, acts); |
e6445719 | 865 | ovs_nla_free_flow_actions(old_acts); |
ccb1352e | 866 | |
15e47304 | 867 | reply = ovs_flow_cmd_build_info(flow, dp, info->snd_portid, |
ccb1352e JG |
868 | info->snd_seq, OVS_FLOW_CMD_NEW); |
869 | ||
870 | /* Clear stats. */ | |
871 | if (a[OVS_FLOW_ATTR_CLEAR]) { | |
872 | spin_lock_bh(&flow->lock); | |
873 | clear_stats(flow); | |
874 | spin_unlock_bh(&flow->lock); | |
875 | } | |
876 | } | |
8e4e1713 | 877 | ovs_unlock(); |
ccb1352e JG |
878 | |
879 | if (!IS_ERR(reply)) | |
ed661185 | 880 | ovs_notify(reply, info, &ovs_dp_flow_multicast_group); |
ccb1352e | 881 | else |
46df7b81 | 882 | netlink_set_err(sock_net(skb->sk)->genl_sock, 0, |
ccb1352e JG |
883 | ovs_dp_flow_multicast_group.id, PTR_ERR(reply)); |
884 | return 0; | |
885 | ||
03f0d916 AZ |
886 | err_flow_free: |
887 | ovs_flow_free(flow, false); | |
8e4e1713 PS |
888 | err_unlock_ovs: |
889 | ovs_unlock(); | |
74f84a57 PS |
890 | err_kfree: |
891 | kfree(acts); | |
ccb1352e JG |
892 | error: |
893 | return error; | |
894 | } | |
895 | ||
896 | static int ovs_flow_cmd_get(struct sk_buff *skb, struct genl_info *info) | |
897 | { | |
898 | struct nlattr **a = info->attrs; | |
899 | struct ovs_header *ovs_header = info->userhdr; | |
900 | struct sw_flow_key key; | |
901 | struct sk_buff *reply; | |
902 | struct sw_flow *flow; | |
903 | struct datapath *dp; | |
03f0d916 | 904 | struct sw_flow_match match; |
ccb1352e | 905 | int err; |
ccb1352e | 906 | |
03f0d916 AZ |
907 | if (!a[OVS_FLOW_ATTR_KEY]) { |
908 | OVS_NLERR("Flow get message rejected, Key attribute missing.\n"); | |
ccb1352e | 909 | return -EINVAL; |
03f0d916 AZ |
910 | } |
911 | ||
912 | ovs_match_init(&match, &key, NULL); | |
e6445719 | 913 | err = ovs_nla_get_match(&match, a[OVS_FLOW_ATTR_KEY], NULL); |
ccb1352e JG |
914 | if (err) |
915 | return err; | |
916 | ||
8e4e1713 | 917 | ovs_lock(); |
46df7b81 | 918 | dp = get_dp(sock_net(skb->sk), ovs_header->dp_ifindex); |
8e4e1713 PS |
919 | if (!dp) { |
920 | err = -ENODEV; | |
921 | goto unlock; | |
922 | } | |
ccb1352e | 923 | |
1bd7116f | 924 | flow = __ovs_flow_tbl_lookup(&dp->table, &key); |
e6445719 | 925 | if (!flow || !ovs_flow_cmp_unmasked_key(flow, &match)) { |
8e4e1713 PS |
926 | err = -ENOENT; |
927 | goto unlock; | |
928 | } | |
ccb1352e | 929 | |
15e47304 | 930 | reply = ovs_flow_cmd_build_info(flow, dp, info->snd_portid, |
ccb1352e | 931 | info->snd_seq, OVS_FLOW_CMD_NEW); |
8e4e1713 PS |
932 | if (IS_ERR(reply)) { |
933 | err = PTR_ERR(reply); | |
934 | goto unlock; | |
935 | } | |
ccb1352e | 936 | |
8e4e1713 | 937 | ovs_unlock(); |
ccb1352e | 938 | return genlmsg_reply(reply, info); |
8e4e1713 PS |
939 | unlock: |
940 | ovs_unlock(); | |
941 | return err; | |
ccb1352e JG |
942 | } |
943 | ||
944 | static int ovs_flow_cmd_del(struct sk_buff *skb, struct genl_info *info) | |
945 | { | |
946 | struct nlattr **a = info->attrs; | |
947 | struct ovs_header *ovs_header = info->userhdr; | |
948 | struct sw_flow_key key; | |
949 | struct sk_buff *reply; | |
950 | struct sw_flow *flow; | |
951 | struct datapath *dp; | |
03f0d916 | 952 | struct sw_flow_match match; |
ccb1352e | 953 | int err; |
ccb1352e | 954 | |
8e4e1713 | 955 | ovs_lock(); |
46df7b81 | 956 | dp = get_dp(sock_net(skb->sk), ovs_header->dp_ifindex); |
8e4e1713 PS |
957 | if (!dp) { |
958 | err = -ENODEV; | |
959 | goto unlock; | |
960 | } | |
46df7b81 | 961 | |
8e4e1713 | 962 | if (!a[OVS_FLOW_ATTR_KEY]) { |
b637e498 | 963 | err = ovs_flow_tbl_flush(&dp->table); |
8e4e1713 PS |
964 | goto unlock; |
965 | } | |
03f0d916 AZ |
966 | |
967 | ovs_match_init(&match, &key, NULL); | |
e6445719 | 968 | err = ovs_nla_get_match(&match, a[OVS_FLOW_ATTR_KEY], NULL); |
ccb1352e | 969 | if (err) |
8e4e1713 | 970 | goto unlock; |
ccb1352e | 971 | |
1bd7116f | 972 | flow = __ovs_flow_tbl_lookup(&dp->table, &key); |
e6445719 | 973 | if (!flow || !ovs_flow_cmp_unmasked_key(flow, &match)) { |
8e4e1713 PS |
974 | err = -ENOENT; |
975 | goto unlock; | |
976 | } | |
ccb1352e JG |
977 | |
978 | reply = ovs_flow_cmd_alloc_info(flow); | |
8e4e1713 PS |
979 | if (!reply) { |
980 | err = -ENOMEM; | |
981 | goto unlock; | |
982 | } | |
ccb1352e | 983 | |
b637e498 | 984 | ovs_flow_tbl_remove(&dp->table, flow); |
ccb1352e | 985 | |
15e47304 | 986 | err = ovs_flow_cmd_fill_info(flow, dp, reply, info->snd_portid, |
ccb1352e JG |
987 | info->snd_seq, 0, OVS_FLOW_CMD_DEL); |
988 | BUG_ON(err < 0); | |
989 | ||
03f0d916 | 990 | ovs_flow_free(flow, true); |
8e4e1713 | 991 | ovs_unlock(); |
ccb1352e | 992 | |
ed661185 | 993 | ovs_notify(reply, info, &ovs_dp_flow_multicast_group); |
ccb1352e | 994 | return 0; |
8e4e1713 PS |
995 | unlock: |
996 | ovs_unlock(); | |
997 | return err; | |
ccb1352e JG |
998 | } |
999 | ||
1000 | static int ovs_flow_cmd_dump(struct sk_buff *skb, struct netlink_callback *cb) | |
1001 | { | |
1002 | struct ovs_header *ovs_header = genlmsg_data(nlmsg_data(cb->nlh)); | |
b637e498 | 1003 | struct table_instance *ti; |
ccb1352e | 1004 | struct datapath *dp; |
ccb1352e | 1005 | |
d57170b1 | 1006 | rcu_read_lock(); |
46df7b81 | 1007 | dp = get_dp(sock_net(skb->sk), ovs_header->dp_ifindex); |
8e4e1713 | 1008 | if (!dp) { |
d57170b1 | 1009 | rcu_read_unlock(); |
ccb1352e | 1010 | return -ENODEV; |
8e4e1713 | 1011 | } |
ccb1352e | 1012 | |
b637e498 | 1013 | ti = rcu_dereference(dp->table.ti); |
ccb1352e JG |
1014 | for (;;) { |
1015 | struct sw_flow *flow; | |
1016 | u32 bucket, obj; | |
1017 | ||
1018 | bucket = cb->args[0]; | |
1019 | obj = cb->args[1]; | |
b637e498 | 1020 | flow = ovs_flow_tbl_dump_next(ti, &bucket, &obj); |
ccb1352e JG |
1021 | if (!flow) |
1022 | break; | |
1023 | ||
1024 | if (ovs_flow_cmd_fill_info(flow, dp, skb, | |
15e47304 | 1025 | NETLINK_CB(cb->skb).portid, |
ccb1352e JG |
1026 | cb->nlh->nlmsg_seq, NLM_F_MULTI, |
1027 | OVS_FLOW_CMD_NEW) < 0) | |
1028 | break; | |
1029 | ||
1030 | cb->args[0] = bucket; | |
1031 | cb->args[1] = obj; | |
1032 | } | |
d57170b1 | 1033 | rcu_read_unlock(); |
ccb1352e JG |
1034 | return skb->len; |
1035 | } | |
1036 | ||
4534de83 | 1037 | static const struct genl_ops dp_flow_genl_ops[] = { |
ccb1352e JG |
1038 | { .cmd = OVS_FLOW_CMD_NEW, |
1039 | .flags = GENL_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */ | |
1040 | .policy = flow_policy, | |
1041 | .doit = ovs_flow_cmd_new_or_set | |
1042 | }, | |
1043 | { .cmd = OVS_FLOW_CMD_DEL, | |
1044 | .flags = GENL_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */ | |
1045 | .policy = flow_policy, | |
1046 | .doit = ovs_flow_cmd_del | |
1047 | }, | |
1048 | { .cmd = OVS_FLOW_CMD_GET, | |
1049 | .flags = 0, /* OK for unprivileged users. */ | |
1050 | .policy = flow_policy, | |
1051 | .doit = ovs_flow_cmd_get, | |
1052 | .dumpit = ovs_flow_cmd_dump | |
1053 | }, | |
1054 | { .cmd = OVS_FLOW_CMD_SET, | |
1055 | .flags = GENL_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */ | |
1056 | .policy = flow_policy, | |
1057 | .doit = ovs_flow_cmd_new_or_set, | |
1058 | }, | |
1059 | }; | |
1060 | ||
1061 | static const struct nla_policy datapath_policy[OVS_DP_ATTR_MAX + 1] = { | |
1062 | [OVS_DP_ATTR_NAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ - 1 }, | |
1063 | [OVS_DP_ATTR_UPCALL_PID] = { .type = NLA_U32 }, | |
1064 | }; | |
1065 | ||
1066 | static struct genl_family dp_datapath_genl_family = { | |
1067 | .id = GENL_ID_GENERATE, | |
1068 | .hdrsize = sizeof(struct ovs_header), | |
1069 | .name = OVS_DATAPATH_FAMILY, | |
1070 | .version = OVS_DATAPATH_VERSION, | |
46df7b81 | 1071 | .maxattr = OVS_DP_ATTR_MAX, |
3a4e0d6a PS |
1072 | .netnsok = true, |
1073 | .parallel_ops = true, | |
ccb1352e JG |
1074 | }; |
1075 | ||
1076 | static struct genl_multicast_group ovs_dp_datapath_multicast_group = { | |
1077 | .name = OVS_DATAPATH_MCGROUP | |
1078 | }; | |
1079 | ||
c3ff8cfe TG |
1080 | static size_t ovs_dp_cmd_msg_size(void) |
1081 | { | |
1082 | size_t msgsize = NLMSG_ALIGN(sizeof(struct ovs_header)); | |
1083 | ||
1084 | msgsize += nla_total_size(IFNAMSIZ); | |
1085 | msgsize += nla_total_size(sizeof(struct ovs_dp_stats)); | |
1bd7116f | 1086 | msgsize += nla_total_size(sizeof(struct ovs_dp_megaflow_stats)); |
c3ff8cfe TG |
1087 | |
1088 | return msgsize; | |
1089 | } | |
1090 | ||
ccb1352e | 1091 | static int ovs_dp_cmd_fill_info(struct datapath *dp, struct sk_buff *skb, |
15e47304 | 1092 | u32 portid, u32 seq, u32 flags, u8 cmd) |
ccb1352e JG |
1093 | { |
1094 | struct ovs_header *ovs_header; | |
1095 | struct ovs_dp_stats dp_stats; | |
1bd7116f | 1096 | struct ovs_dp_megaflow_stats dp_megaflow_stats; |
ccb1352e JG |
1097 | int err; |
1098 | ||
15e47304 | 1099 | ovs_header = genlmsg_put(skb, portid, seq, &dp_datapath_genl_family, |
ccb1352e JG |
1100 | flags, cmd); |
1101 | if (!ovs_header) | |
1102 | goto error; | |
1103 | ||
1104 | ovs_header->dp_ifindex = get_dpifindex(dp); | |
1105 | ||
1106 | rcu_read_lock(); | |
1107 | err = nla_put_string(skb, OVS_DP_ATTR_NAME, ovs_dp_name(dp)); | |
1108 | rcu_read_unlock(); | |
1109 | if (err) | |
1110 | goto nla_put_failure; | |
1111 | ||
1bd7116f AZ |
1112 | get_dp_stats(dp, &dp_stats, &dp_megaflow_stats); |
1113 | if (nla_put(skb, OVS_DP_ATTR_STATS, sizeof(struct ovs_dp_stats), | |
1114 | &dp_stats)) | |
1115 | goto nla_put_failure; | |
1116 | ||
1117 | if (nla_put(skb, OVS_DP_ATTR_MEGAFLOW_STATS, | |
1118 | sizeof(struct ovs_dp_megaflow_stats), | |
1119 | &dp_megaflow_stats)) | |
028d6a67 | 1120 | goto nla_put_failure; |
ccb1352e JG |
1121 | |
1122 | return genlmsg_end(skb, ovs_header); | |
1123 | ||
1124 | nla_put_failure: | |
1125 | genlmsg_cancel(skb, ovs_header); | |
1126 | error: | |
1127 | return -EMSGSIZE; | |
1128 | } | |
1129 | ||
15e47304 | 1130 | static struct sk_buff *ovs_dp_cmd_build_info(struct datapath *dp, u32 portid, |
ccb1352e JG |
1131 | u32 seq, u8 cmd) |
1132 | { | |
1133 | struct sk_buff *skb; | |
1134 | int retval; | |
1135 | ||
c3ff8cfe | 1136 | skb = genlmsg_new(ovs_dp_cmd_msg_size(), GFP_KERNEL); |
ccb1352e JG |
1137 | if (!skb) |
1138 | return ERR_PTR(-ENOMEM); | |
1139 | ||
15e47304 | 1140 | retval = ovs_dp_cmd_fill_info(dp, skb, portid, seq, 0, cmd); |
ccb1352e JG |
1141 | if (retval < 0) { |
1142 | kfree_skb(skb); | |
1143 | return ERR_PTR(retval); | |
1144 | } | |
1145 | return skb; | |
1146 | } | |
1147 | ||
8e4e1713 | 1148 | /* Called with ovs_mutex. */ |
46df7b81 PS |
1149 | static struct datapath *lookup_datapath(struct net *net, |
1150 | struct ovs_header *ovs_header, | |
ccb1352e JG |
1151 | struct nlattr *a[OVS_DP_ATTR_MAX + 1]) |
1152 | { | |
1153 | struct datapath *dp; | |
1154 | ||
1155 | if (!a[OVS_DP_ATTR_NAME]) | |
46df7b81 | 1156 | dp = get_dp(net, ovs_header->dp_ifindex); |
ccb1352e JG |
1157 | else { |
1158 | struct vport *vport; | |
1159 | ||
1160 | rcu_read_lock(); | |
46df7b81 | 1161 | vport = ovs_vport_locate(net, nla_data(a[OVS_DP_ATTR_NAME])); |
ccb1352e JG |
1162 | dp = vport && vport->port_no == OVSP_LOCAL ? vport->dp : NULL; |
1163 | rcu_read_unlock(); | |
1164 | } | |
1165 | return dp ? dp : ERR_PTR(-ENODEV); | |
1166 | } | |
1167 | ||
1168 | static int ovs_dp_cmd_new(struct sk_buff *skb, struct genl_info *info) | |
1169 | { | |
1170 | struct nlattr **a = info->attrs; | |
1171 | struct vport_parms parms; | |
1172 | struct sk_buff *reply; | |
1173 | struct datapath *dp; | |
1174 | struct vport *vport; | |
46df7b81 | 1175 | struct ovs_net *ovs_net; |
15eac2a7 | 1176 | int err, i; |
ccb1352e JG |
1177 | |
1178 | err = -EINVAL; | |
1179 | if (!a[OVS_DP_ATTR_NAME] || !a[OVS_DP_ATTR_UPCALL_PID]) | |
1180 | goto err; | |
1181 | ||
8e4e1713 | 1182 | ovs_lock(); |
ccb1352e JG |
1183 | |
1184 | err = -ENOMEM; | |
1185 | dp = kzalloc(sizeof(*dp), GFP_KERNEL); | |
1186 | if (dp == NULL) | |
8e4e1713 | 1187 | goto err_unlock_ovs; |
46df7b81 | 1188 | |
46df7b81 | 1189 | ovs_dp_set_net(dp, hold_net(sock_net(skb->sk))); |
ccb1352e JG |
1190 | |
1191 | /* Allocate table. */ | |
b637e498 PS |
1192 | err = ovs_flow_tbl_init(&dp->table); |
1193 | if (err) | |
ccb1352e JG |
1194 | goto err_free_dp; |
1195 | ||
1196 | dp->stats_percpu = alloc_percpu(struct dp_stats_percpu); | |
1197 | if (!dp->stats_percpu) { | |
1198 | err = -ENOMEM; | |
1199 | goto err_destroy_table; | |
1200 | } | |
1201 | ||
15eac2a7 | 1202 | dp->ports = kmalloc(DP_VPORT_HASH_BUCKETS * sizeof(struct hlist_head), |
e6445719 | 1203 | GFP_KERNEL); |
15eac2a7 PS |
1204 | if (!dp->ports) { |
1205 | err = -ENOMEM; | |
1206 | goto err_destroy_percpu; | |
1207 | } | |
1208 | ||
1209 | for (i = 0; i < DP_VPORT_HASH_BUCKETS; i++) | |
1210 | INIT_HLIST_HEAD(&dp->ports[i]); | |
1211 | ||
ccb1352e JG |
1212 | /* Set up our datapath device. */ |
1213 | parms.name = nla_data(a[OVS_DP_ATTR_NAME]); | |
1214 | parms.type = OVS_VPORT_TYPE_INTERNAL; | |
1215 | parms.options = NULL; | |
1216 | parms.dp = dp; | |
1217 | parms.port_no = OVSP_LOCAL; | |
15e47304 | 1218 | parms.upcall_portid = nla_get_u32(a[OVS_DP_ATTR_UPCALL_PID]); |
ccb1352e JG |
1219 | |
1220 | vport = new_vport(&parms); | |
1221 | if (IS_ERR(vport)) { | |
1222 | err = PTR_ERR(vport); | |
1223 | if (err == -EBUSY) | |
1224 | err = -EEXIST; | |
1225 | ||
15eac2a7 | 1226 | goto err_destroy_ports_array; |
ccb1352e JG |
1227 | } |
1228 | ||
15e47304 | 1229 | reply = ovs_dp_cmd_build_info(dp, info->snd_portid, |
ccb1352e JG |
1230 | info->snd_seq, OVS_DP_CMD_NEW); |
1231 | err = PTR_ERR(reply); | |
1232 | if (IS_ERR(reply)) | |
1233 | goto err_destroy_local_port; | |
1234 | ||
46df7b81 | 1235 | ovs_net = net_generic(ovs_dp_get_net(dp), ovs_net_id); |
59a35d60 | 1236 | list_add_tail_rcu(&dp->list_node, &ovs_net->dps); |
8e4e1713 PS |
1237 | |
1238 | ovs_unlock(); | |
ccb1352e | 1239 | |
ed661185 | 1240 | ovs_notify(reply, info, &ovs_dp_datapath_multicast_group); |
ccb1352e JG |
1241 | return 0; |
1242 | ||
1243 | err_destroy_local_port: | |
8e4e1713 | 1244 | ovs_dp_detach_port(ovs_vport_ovsl(dp, OVSP_LOCAL)); |
15eac2a7 PS |
1245 | err_destroy_ports_array: |
1246 | kfree(dp->ports); | |
ccb1352e JG |
1247 | err_destroy_percpu: |
1248 | free_percpu(dp->stats_percpu); | |
1249 | err_destroy_table: | |
618ed0c8 | 1250 | ovs_flow_tbl_destroy(&dp->table); |
ccb1352e | 1251 | err_free_dp: |
46df7b81 | 1252 | release_net(ovs_dp_get_net(dp)); |
ccb1352e | 1253 | kfree(dp); |
8e4e1713 PS |
1254 | err_unlock_ovs: |
1255 | ovs_unlock(); | |
ccb1352e JG |
1256 | err: |
1257 | return err; | |
1258 | } | |
1259 | ||
8e4e1713 | 1260 | /* Called with ovs_mutex. */ |
46df7b81 | 1261 | static void __dp_destroy(struct datapath *dp) |
ccb1352e | 1262 | { |
15eac2a7 | 1263 | int i; |
ccb1352e | 1264 | |
15eac2a7 PS |
1265 | for (i = 0; i < DP_VPORT_HASH_BUCKETS; i++) { |
1266 | struct vport *vport; | |
b67bfe0d | 1267 | struct hlist_node *n; |
15eac2a7 | 1268 | |
b67bfe0d | 1269 | hlist_for_each_entry_safe(vport, n, &dp->ports[i], dp_hash_node) |
15eac2a7 PS |
1270 | if (vport->port_no != OVSP_LOCAL) |
1271 | ovs_dp_detach_port(vport); | |
1272 | } | |
ccb1352e | 1273 | |
59a35d60 | 1274 | list_del_rcu(&dp->list_node); |
ccb1352e | 1275 | |
8e4e1713 PS |
1276 | /* OVSP_LOCAL is datapath internal port. We need to make sure that |
1277 | * all port in datapath are destroyed first before freeing datapath. | |
ccb1352e | 1278 | */ |
8e4e1713 | 1279 | ovs_dp_detach_port(ovs_vport_ovsl(dp, OVSP_LOCAL)); |
ccb1352e JG |
1280 | |
1281 | call_rcu(&dp->rcu, destroy_dp_rcu); | |
46df7b81 PS |
1282 | } |
1283 | ||
1284 | static int ovs_dp_cmd_del(struct sk_buff *skb, struct genl_info *info) | |
1285 | { | |
1286 | struct sk_buff *reply; | |
1287 | struct datapath *dp; | |
1288 | int err; | |
1289 | ||
8e4e1713 | 1290 | ovs_lock(); |
46df7b81 PS |
1291 | dp = lookup_datapath(sock_net(skb->sk), info->userhdr, info->attrs); |
1292 | err = PTR_ERR(dp); | |
1293 | if (IS_ERR(dp)) | |
8e4e1713 | 1294 | goto unlock; |
46df7b81 | 1295 | |
15e47304 | 1296 | reply = ovs_dp_cmd_build_info(dp, info->snd_portid, |
46df7b81 PS |
1297 | info->snd_seq, OVS_DP_CMD_DEL); |
1298 | err = PTR_ERR(reply); | |
1299 | if (IS_ERR(reply)) | |
8e4e1713 | 1300 | goto unlock; |
46df7b81 PS |
1301 | |
1302 | __dp_destroy(dp); | |
8e4e1713 | 1303 | ovs_unlock(); |
ccb1352e | 1304 | |
ed661185 | 1305 | ovs_notify(reply, info, &ovs_dp_datapath_multicast_group); |
ccb1352e JG |
1306 | |
1307 | return 0; | |
8e4e1713 PS |
1308 | unlock: |
1309 | ovs_unlock(); | |
1310 | return err; | |
ccb1352e JG |
1311 | } |
1312 | ||
1313 | static int ovs_dp_cmd_set(struct sk_buff *skb, struct genl_info *info) | |
1314 | { | |
1315 | struct sk_buff *reply; | |
1316 | struct datapath *dp; | |
1317 | int err; | |
1318 | ||
8e4e1713 | 1319 | ovs_lock(); |
46df7b81 | 1320 | dp = lookup_datapath(sock_net(skb->sk), info->userhdr, info->attrs); |
8e4e1713 | 1321 | err = PTR_ERR(dp); |
ccb1352e | 1322 | if (IS_ERR(dp)) |
8e4e1713 | 1323 | goto unlock; |
ccb1352e | 1324 | |
15e47304 | 1325 | reply = ovs_dp_cmd_build_info(dp, info->snd_portid, |
ccb1352e JG |
1326 | info->snd_seq, OVS_DP_CMD_NEW); |
1327 | if (IS_ERR(reply)) { | |
1328 | err = PTR_ERR(reply); | |
46df7b81 | 1329 | netlink_set_err(sock_net(skb->sk)->genl_sock, 0, |
ccb1352e | 1330 | ovs_dp_datapath_multicast_group.id, err); |
8e4e1713 PS |
1331 | err = 0; |
1332 | goto unlock; | |
ccb1352e JG |
1333 | } |
1334 | ||
8e4e1713 | 1335 | ovs_unlock(); |
ed661185 | 1336 | ovs_notify(reply, info, &ovs_dp_datapath_multicast_group); |
ccb1352e JG |
1337 | |
1338 | return 0; | |
8e4e1713 PS |
1339 | unlock: |
1340 | ovs_unlock(); | |
1341 | return err; | |
ccb1352e JG |
1342 | } |
1343 | ||
1344 | static int ovs_dp_cmd_get(struct sk_buff *skb, struct genl_info *info) | |
1345 | { | |
1346 | struct sk_buff *reply; | |
1347 | struct datapath *dp; | |
8e4e1713 | 1348 | int err; |
ccb1352e | 1349 | |
8e4e1713 | 1350 | ovs_lock(); |
46df7b81 | 1351 | dp = lookup_datapath(sock_net(skb->sk), info->userhdr, info->attrs); |
8e4e1713 PS |
1352 | if (IS_ERR(dp)) { |
1353 | err = PTR_ERR(dp); | |
1354 | goto unlock; | |
1355 | } | |
ccb1352e | 1356 | |
15e47304 | 1357 | reply = ovs_dp_cmd_build_info(dp, info->snd_portid, |
ccb1352e | 1358 | info->snd_seq, OVS_DP_CMD_NEW); |
8e4e1713 PS |
1359 | if (IS_ERR(reply)) { |
1360 | err = PTR_ERR(reply); | |
1361 | goto unlock; | |
1362 | } | |
ccb1352e | 1363 | |
8e4e1713 | 1364 | ovs_unlock(); |
ccb1352e | 1365 | return genlmsg_reply(reply, info); |
8e4e1713 PS |
1366 | |
1367 | unlock: | |
1368 | ovs_unlock(); | |
1369 | return err; | |
ccb1352e JG |
1370 | } |
1371 | ||
1372 | static int ovs_dp_cmd_dump(struct sk_buff *skb, struct netlink_callback *cb) | |
1373 | { | |
46df7b81 | 1374 | struct ovs_net *ovs_net = net_generic(sock_net(skb->sk), ovs_net_id); |
ccb1352e JG |
1375 | struct datapath *dp; |
1376 | int skip = cb->args[0]; | |
1377 | int i = 0; | |
1378 | ||
59a35d60 PS |
1379 | rcu_read_lock(); |
1380 | list_for_each_entry_rcu(dp, &ovs_net->dps, list_node) { | |
77676fdb | 1381 | if (i >= skip && |
15e47304 | 1382 | ovs_dp_cmd_fill_info(dp, skb, NETLINK_CB(cb->skb).portid, |
ccb1352e JG |
1383 | cb->nlh->nlmsg_seq, NLM_F_MULTI, |
1384 | OVS_DP_CMD_NEW) < 0) | |
1385 | break; | |
1386 | i++; | |
1387 | } | |
59a35d60 | 1388 | rcu_read_unlock(); |
ccb1352e JG |
1389 | |
1390 | cb->args[0] = i; | |
1391 | ||
1392 | return skb->len; | |
1393 | } | |
1394 | ||
4534de83 | 1395 | static const struct genl_ops dp_datapath_genl_ops[] = { |
ccb1352e JG |
1396 | { .cmd = OVS_DP_CMD_NEW, |
1397 | .flags = GENL_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */ | |
1398 | .policy = datapath_policy, | |
1399 | .doit = ovs_dp_cmd_new | |
1400 | }, | |
1401 | { .cmd = OVS_DP_CMD_DEL, | |
1402 | .flags = GENL_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */ | |
1403 | .policy = datapath_policy, | |
1404 | .doit = ovs_dp_cmd_del | |
1405 | }, | |
1406 | { .cmd = OVS_DP_CMD_GET, | |
1407 | .flags = 0, /* OK for unprivileged users. */ | |
1408 | .policy = datapath_policy, | |
1409 | .doit = ovs_dp_cmd_get, | |
1410 | .dumpit = ovs_dp_cmd_dump | |
1411 | }, | |
1412 | { .cmd = OVS_DP_CMD_SET, | |
1413 | .flags = GENL_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */ | |
1414 | .policy = datapath_policy, | |
1415 | .doit = ovs_dp_cmd_set, | |
1416 | }, | |
1417 | }; | |
1418 | ||
1419 | static const struct nla_policy vport_policy[OVS_VPORT_ATTR_MAX + 1] = { | |
1420 | [OVS_VPORT_ATTR_NAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ - 1 }, | |
1421 | [OVS_VPORT_ATTR_STATS] = { .len = sizeof(struct ovs_vport_stats) }, | |
1422 | [OVS_VPORT_ATTR_PORT_NO] = { .type = NLA_U32 }, | |
1423 | [OVS_VPORT_ATTR_TYPE] = { .type = NLA_U32 }, | |
1424 | [OVS_VPORT_ATTR_UPCALL_PID] = { .type = NLA_U32 }, | |
1425 | [OVS_VPORT_ATTR_OPTIONS] = { .type = NLA_NESTED }, | |
1426 | }; | |
1427 | ||
1428 | static struct genl_family dp_vport_genl_family = { | |
1429 | .id = GENL_ID_GENERATE, | |
1430 | .hdrsize = sizeof(struct ovs_header), | |
1431 | .name = OVS_VPORT_FAMILY, | |
1432 | .version = OVS_VPORT_VERSION, | |
46df7b81 | 1433 | .maxattr = OVS_VPORT_ATTR_MAX, |
3a4e0d6a PS |
1434 | .netnsok = true, |
1435 | .parallel_ops = true, | |
ccb1352e JG |
1436 | }; |
1437 | ||
1438 | struct genl_multicast_group ovs_dp_vport_multicast_group = { | |
1439 | .name = OVS_VPORT_MCGROUP | |
1440 | }; | |
1441 | ||
8e4e1713 | 1442 | /* Called with ovs_mutex or RCU read lock. */ |
ccb1352e | 1443 | static int ovs_vport_cmd_fill_info(struct vport *vport, struct sk_buff *skb, |
15e47304 | 1444 | u32 portid, u32 seq, u32 flags, u8 cmd) |
ccb1352e JG |
1445 | { |
1446 | struct ovs_header *ovs_header; | |
1447 | struct ovs_vport_stats vport_stats; | |
1448 | int err; | |
1449 | ||
15e47304 | 1450 | ovs_header = genlmsg_put(skb, portid, seq, &dp_vport_genl_family, |
ccb1352e JG |
1451 | flags, cmd); |
1452 | if (!ovs_header) | |
1453 | return -EMSGSIZE; | |
1454 | ||
1455 | ovs_header->dp_ifindex = get_dpifindex(vport->dp); | |
1456 | ||
028d6a67 DM |
1457 | if (nla_put_u32(skb, OVS_VPORT_ATTR_PORT_NO, vport->port_no) || |
1458 | nla_put_u32(skb, OVS_VPORT_ATTR_TYPE, vport->ops->type) || | |
1459 | nla_put_string(skb, OVS_VPORT_ATTR_NAME, vport->ops->get_name(vport)) || | |
15e47304 | 1460 | nla_put_u32(skb, OVS_VPORT_ATTR_UPCALL_PID, vport->upcall_portid)) |
028d6a67 | 1461 | goto nla_put_failure; |
ccb1352e JG |
1462 | |
1463 | ovs_vport_get_stats(vport, &vport_stats); | |
028d6a67 DM |
1464 | if (nla_put(skb, OVS_VPORT_ATTR_STATS, sizeof(struct ovs_vport_stats), |
1465 | &vport_stats)) | |
1466 | goto nla_put_failure; | |
ccb1352e JG |
1467 | |
1468 | err = ovs_vport_get_options(vport, skb); | |
1469 | if (err == -EMSGSIZE) | |
1470 | goto error; | |
1471 | ||
1472 | return genlmsg_end(skb, ovs_header); | |
1473 | ||
1474 | nla_put_failure: | |
1475 | err = -EMSGSIZE; | |
1476 | error: | |
1477 | genlmsg_cancel(skb, ovs_header); | |
1478 | return err; | |
1479 | } | |
1480 | ||
8e4e1713 | 1481 | /* Called with ovs_mutex or RCU read lock. */ |
15e47304 | 1482 | struct sk_buff *ovs_vport_cmd_build_info(struct vport *vport, u32 portid, |
ccb1352e JG |
1483 | u32 seq, u8 cmd) |
1484 | { | |
1485 | struct sk_buff *skb; | |
1486 | int retval; | |
1487 | ||
1488 | skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); | |
1489 | if (!skb) | |
1490 | return ERR_PTR(-ENOMEM); | |
1491 | ||
15e47304 | 1492 | retval = ovs_vport_cmd_fill_info(vport, skb, portid, seq, 0, cmd); |
a9341512 JG |
1493 | BUG_ON(retval < 0); |
1494 | ||
ccb1352e JG |
1495 | return skb; |
1496 | } | |
1497 | ||
8e4e1713 | 1498 | /* Called with ovs_mutex or RCU read lock. */ |
46df7b81 PS |
1499 | static struct vport *lookup_vport(struct net *net, |
1500 | struct ovs_header *ovs_header, | |
ccb1352e JG |
1501 | struct nlattr *a[OVS_VPORT_ATTR_MAX + 1]) |
1502 | { | |
1503 | struct datapath *dp; | |
1504 | struct vport *vport; | |
1505 | ||
1506 | if (a[OVS_VPORT_ATTR_NAME]) { | |
46df7b81 | 1507 | vport = ovs_vport_locate(net, nla_data(a[OVS_VPORT_ATTR_NAME])); |
ccb1352e JG |
1508 | if (!vport) |
1509 | return ERR_PTR(-ENODEV); | |
651a68ea BP |
1510 | if (ovs_header->dp_ifindex && |
1511 | ovs_header->dp_ifindex != get_dpifindex(vport->dp)) | |
1512 | return ERR_PTR(-ENODEV); | |
ccb1352e JG |
1513 | return vport; |
1514 | } else if (a[OVS_VPORT_ATTR_PORT_NO]) { | |
1515 | u32 port_no = nla_get_u32(a[OVS_VPORT_ATTR_PORT_NO]); | |
1516 | ||
1517 | if (port_no >= DP_MAX_PORTS) | |
1518 | return ERR_PTR(-EFBIG); | |
1519 | ||
46df7b81 | 1520 | dp = get_dp(net, ovs_header->dp_ifindex); |
ccb1352e JG |
1521 | if (!dp) |
1522 | return ERR_PTR(-ENODEV); | |
1523 | ||
8e4e1713 | 1524 | vport = ovs_vport_ovsl_rcu(dp, port_no); |
ccb1352e | 1525 | if (!vport) |
14408dba | 1526 | return ERR_PTR(-ENODEV); |
ccb1352e JG |
1527 | return vport; |
1528 | } else | |
1529 | return ERR_PTR(-EINVAL); | |
1530 | } | |
1531 | ||
1532 | static int ovs_vport_cmd_new(struct sk_buff *skb, struct genl_info *info) | |
1533 | { | |
1534 | struct nlattr **a = info->attrs; | |
1535 | struct ovs_header *ovs_header = info->userhdr; | |
1536 | struct vport_parms parms; | |
1537 | struct sk_buff *reply; | |
1538 | struct vport *vport; | |
1539 | struct datapath *dp; | |
1540 | u32 port_no; | |
1541 | int err; | |
1542 | ||
1543 | err = -EINVAL; | |
1544 | if (!a[OVS_VPORT_ATTR_NAME] || !a[OVS_VPORT_ATTR_TYPE] || | |
1545 | !a[OVS_VPORT_ATTR_UPCALL_PID]) | |
1546 | goto exit; | |
1547 | ||
8e4e1713 | 1548 | ovs_lock(); |
46df7b81 | 1549 | dp = get_dp(sock_net(skb->sk), ovs_header->dp_ifindex); |
ccb1352e JG |
1550 | err = -ENODEV; |
1551 | if (!dp) | |
1552 | goto exit_unlock; | |
1553 | ||
1554 | if (a[OVS_VPORT_ATTR_PORT_NO]) { | |
1555 | port_no = nla_get_u32(a[OVS_VPORT_ATTR_PORT_NO]); | |
1556 | ||
1557 | err = -EFBIG; | |
1558 | if (port_no >= DP_MAX_PORTS) | |
1559 | goto exit_unlock; | |
1560 | ||
8e4e1713 | 1561 | vport = ovs_vport_ovsl(dp, port_no); |
ccb1352e JG |
1562 | err = -EBUSY; |
1563 | if (vport) | |
1564 | goto exit_unlock; | |
1565 | } else { | |
1566 | for (port_no = 1; ; port_no++) { | |
1567 | if (port_no >= DP_MAX_PORTS) { | |
1568 | err = -EFBIG; | |
1569 | goto exit_unlock; | |
1570 | } | |
8e4e1713 | 1571 | vport = ovs_vport_ovsl(dp, port_no); |
ccb1352e JG |
1572 | if (!vport) |
1573 | break; | |
1574 | } | |
1575 | } | |
1576 | ||
1577 | parms.name = nla_data(a[OVS_VPORT_ATTR_NAME]); | |
1578 | parms.type = nla_get_u32(a[OVS_VPORT_ATTR_TYPE]); | |
1579 | parms.options = a[OVS_VPORT_ATTR_OPTIONS]; | |
1580 | parms.dp = dp; | |
1581 | parms.port_no = port_no; | |
15e47304 | 1582 | parms.upcall_portid = nla_get_u32(a[OVS_VPORT_ATTR_UPCALL_PID]); |
ccb1352e JG |
1583 | |
1584 | vport = new_vport(&parms); | |
1585 | err = PTR_ERR(vport); | |
1586 | if (IS_ERR(vport)) | |
1587 | goto exit_unlock; | |
1588 | ||
cb7c5bdf | 1589 | err = 0; |
15e47304 | 1590 | reply = ovs_vport_cmd_build_info(vport, info->snd_portid, info->snd_seq, |
ccb1352e JG |
1591 | OVS_VPORT_CMD_NEW); |
1592 | if (IS_ERR(reply)) { | |
1593 | err = PTR_ERR(reply); | |
1594 | ovs_dp_detach_port(vport); | |
1595 | goto exit_unlock; | |
1596 | } | |
ed661185 TG |
1597 | |
1598 | ovs_notify(reply, info, &ovs_dp_vport_multicast_group); | |
ccb1352e JG |
1599 | |
1600 | exit_unlock: | |
8e4e1713 | 1601 | ovs_unlock(); |
ccb1352e JG |
1602 | exit: |
1603 | return err; | |
1604 | } | |
1605 | ||
1606 | static int ovs_vport_cmd_set(struct sk_buff *skb, struct genl_info *info) | |
1607 | { | |
1608 | struct nlattr **a = info->attrs; | |
1609 | struct sk_buff *reply; | |
1610 | struct vport *vport; | |
1611 | int err; | |
1612 | ||
8e4e1713 | 1613 | ovs_lock(); |
46df7b81 | 1614 | vport = lookup_vport(sock_net(skb->sk), info->userhdr, a); |
ccb1352e JG |
1615 | err = PTR_ERR(vport); |
1616 | if (IS_ERR(vport)) | |
1617 | goto exit_unlock; | |
1618 | ||
ccb1352e | 1619 | if (a[OVS_VPORT_ATTR_TYPE] && |
f44f3408 | 1620 | nla_get_u32(a[OVS_VPORT_ATTR_TYPE]) != vport->ops->type) { |
ccb1352e | 1621 | err = -EINVAL; |
f44f3408 JG |
1622 | goto exit_unlock; |
1623 | } | |
ccb1352e | 1624 | |
a9341512 JG |
1625 | reply = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
1626 | if (!reply) { | |
1627 | err = -ENOMEM; | |
1628 | goto exit_unlock; | |
1629 | } | |
1630 | ||
f44f3408 | 1631 | if (a[OVS_VPORT_ATTR_OPTIONS]) { |
ccb1352e | 1632 | err = ovs_vport_set_options(vport, a[OVS_VPORT_ATTR_OPTIONS]); |
f44f3408 JG |
1633 | if (err) |
1634 | goto exit_free; | |
1635 | } | |
a9341512 | 1636 | |
03fbf8b3 | 1637 | if (a[OVS_VPORT_ATTR_UPCALL_PID]) |
15e47304 | 1638 | vport->upcall_portid = nla_get_u32(a[OVS_VPORT_ATTR_UPCALL_PID]); |
ccb1352e | 1639 | |
a9341512 JG |
1640 | err = ovs_vport_cmd_fill_info(vport, reply, info->snd_portid, |
1641 | info->snd_seq, 0, OVS_VPORT_CMD_NEW); | |
1642 | BUG_ON(err < 0); | |
ccb1352e | 1643 | |
8e4e1713 | 1644 | ovs_unlock(); |
ed661185 | 1645 | ovs_notify(reply, info, &ovs_dp_vport_multicast_group); |
8e4e1713 | 1646 | return 0; |
ccb1352e | 1647 | |
a9341512 JG |
1648 | exit_free: |
1649 | kfree_skb(reply); | |
ccb1352e | 1650 | exit_unlock: |
8e4e1713 | 1651 | ovs_unlock(); |
ccb1352e JG |
1652 | return err; |
1653 | } | |
1654 | ||
1655 | static int ovs_vport_cmd_del(struct sk_buff *skb, struct genl_info *info) | |
1656 | { | |
1657 | struct nlattr **a = info->attrs; | |
1658 | struct sk_buff *reply; | |
1659 | struct vport *vport; | |
1660 | int err; | |
1661 | ||
8e4e1713 | 1662 | ovs_lock(); |
46df7b81 | 1663 | vport = lookup_vport(sock_net(skb->sk), info->userhdr, a); |
ccb1352e JG |
1664 | err = PTR_ERR(vport); |
1665 | if (IS_ERR(vport)) | |
1666 | goto exit_unlock; | |
1667 | ||
1668 | if (vport->port_no == OVSP_LOCAL) { | |
1669 | err = -EINVAL; | |
1670 | goto exit_unlock; | |
1671 | } | |
1672 | ||
74f84a57 PS |
1673 | reply = ovs_vport_cmd_build_info(vport, info->snd_portid, |
1674 | info->snd_seq, OVS_VPORT_CMD_DEL); | |
ccb1352e JG |
1675 | err = PTR_ERR(reply); |
1676 | if (IS_ERR(reply)) | |
1677 | goto exit_unlock; | |
1678 | ||
734907e8 | 1679 | err = 0; |
ccb1352e JG |
1680 | ovs_dp_detach_port(vport); |
1681 | ||
ed661185 | 1682 | ovs_notify(reply, info, &ovs_dp_vport_multicast_group); |
ccb1352e JG |
1683 | |
1684 | exit_unlock: | |
8e4e1713 | 1685 | ovs_unlock(); |
ccb1352e JG |
1686 | return err; |
1687 | } | |
1688 | ||
1689 | static int ovs_vport_cmd_get(struct sk_buff *skb, struct genl_info *info) | |
1690 | { | |
1691 | struct nlattr **a = info->attrs; | |
1692 | struct ovs_header *ovs_header = info->userhdr; | |
1693 | struct sk_buff *reply; | |
1694 | struct vport *vport; | |
1695 | int err; | |
1696 | ||
1697 | rcu_read_lock(); | |
46df7b81 | 1698 | vport = lookup_vport(sock_net(skb->sk), ovs_header, a); |
ccb1352e JG |
1699 | err = PTR_ERR(vport); |
1700 | if (IS_ERR(vport)) | |
1701 | goto exit_unlock; | |
1702 | ||
74f84a57 PS |
1703 | reply = ovs_vport_cmd_build_info(vport, info->snd_portid, |
1704 | info->snd_seq, OVS_VPORT_CMD_NEW); | |
ccb1352e JG |
1705 | err = PTR_ERR(reply); |
1706 | if (IS_ERR(reply)) | |
1707 | goto exit_unlock; | |
1708 | ||
1709 | rcu_read_unlock(); | |
1710 | ||
1711 | return genlmsg_reply(reply, info); | |
1712 | ||
1713 | exit_unlock: | |
1714 | rcu_read_unlock(); | |
1715 | return err; | |
1716 | } | |
1717 | ||
1718 | static int ovs_vport_cmd_dump(struct sk_buff *skb, struct netlink_callback *cb) | |
1719 | { | |
1720 | struct ovs_header *ovs_header = genlmsg_data(nlmsg_data(cb->nlh)); | |
1721 | struct datapath *dp; | |
15eac2a7 PS |
1722 | int bucket = cb->args[0], skip = cb->args[1]; |
1723 | int i, j = 0; | |
ccb1352e | 1724 | |
46df7b81 | 1725 | dp = get_dp(sock_net(skb->sk), ovs_header->dp_ifindex); |
ccb1352e JG |
1726 | if (!dp) |
1727 | return -ENODEV; | |
1728 | ||
1729 | rcu_read_lock(); | |
15eac2a7 | 1730 | for (i = bucket; i < DP_VPORT_HASH_BUCKETS; i++) { |
ccb1352e | 1731 | struct vport *vport; |
15eac2a7 PS |
1732 | |
1733 | j = 0; | |
b67bfe0d | 1734 | hlist_for_each_entry_rcu(vport, &dp->ports[i], dp_hash_node) { |
15eac2a7 PS |
1735 | if (j >= skip && |
1736 | ovs_vport_cmd_fill_info(vport, skb, | |
15e47304 | 1737 | NETLINK_CB(cb->skb).portid, |
15eac2a7 PS |
1738 | cb->nlh->nlmsg_seq, |
1739 | NLM_F_MULTI, | |
1740 | OVS_VPORT_CMD_NEW) < 0) | |
1741 | goto out; | |
1742 | ||
1743 | j++; | |
1744 | } | |
1745 | skip = 0; | |
ccb1352e | 1746 | } |
15eac2a7 | 1747 | out: |
ccb1352e JG |
1748 | rcu_read_unlock(); |
1749 | ||
15eac2a7 PS |
1750 | cb->args[0] = i; |
1751 | cb->args[1] = j; | |
ccb1352e | 1752 | |
15eac2a7 | 1753 | return skb->len; |
ccb1352e JG |
1754 | } |
1755 | ||
4534de83 | 1756 | static const struct genl_ops dp_vport_genl_ops[] = { |
ccb1352e JG |
1757 | { .cmd = OVS_VPORT_CMD_NEW, |
1758 | .flags = GENL_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */ | |
1759 | .policy = vport_policy, | |
1760 | .doit = ovs_vport_cmd_new | |
1761 | }, | |
1762 | { .cmd = OVS_VPORT_CMD_DEL, | |
1763 | .flags = GENL_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */ | |
1764 | .policy = vport_policy, | |
1765 | .doit = ovs_vport_cmd_del | |
1766 | }, | |
1767 | { .cmd = OVS_VPORT_CMD_GET, | |
1768 | .flags = 0, /* OK for unprivileged users. */ | |
1769 | .policy = vport_policy, | |
1770 | .doit = ovs_vport_cmd_get, | |
1771 | .dumpit = ovs_vport_cmd_dump | |
1772 | }, | |
1773 | { .cmd = OVS_VPORT_CMD_SET, | |
1774 | .flags = GENL_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */ | |
1775 | .policy = vport_policy, | |
1776 | .doit = ovs_vport_cmd_set, | |
1777 | }, | |
1778 | }; | |
1779 | ||
1780 | struct genl_family_and_ops { | |
1781 | struct genl_family *family; | |
4534de83 | 1782 | const struct genl_ops *ops; |
ccb1352e JG |
1783 | int n_ops; |
1784 | struct genl_multicast_group *group; | |
1785 | }; | |
1786 | ||
1787 | static const struct genl_family_and_ops dp_genl_families[] = { | |
1788 | { &dp_datapath_genl_family, | |
1789 | dp_datapath_genl_ops, ARRAY_SIZE(dp_datapath_genl_ops), | |
1790 | &ovs_dp_datapath_multicast_group }, | |
1791 | { &dp_vport_genl_family, | |
1792 | dp_vport_genl_ops, ARRAY_SIZE(dp_vport_genl_ops), | |
1793 | &ovs_dp_vport_multicast_group }, | |
1794 | { &dp_flow_genl_family, | |
1795 | dp_flow_genl_ops, ARRAY_SIZE(dp_flow_genl_ops), | |
1796 | &ovs_dp_flow_multicast_group }, | |
1797 | { &dp_packet_genl_family, | |
1798 | dp_packet_genl_ops, ARRAY_SIZE(dp_packet_genl_ops), | |
1799 | NULL }, | |
1800 | }; | |
1801 | ||
1802 | static void dp_unregister_genl(int n_families) | |
1803 | { | |
1804 | int i; | |
1805 | ||
1806 | for (i = 0; i < n_families; i++) | |
1807 | genl_unregister_family(dp_genl_families[i].family); | |
1808 | } | |
1809 | ||
1810 | static int dp_register_genl(void) | |
1811 | { | |
1812 | int n_registered; | |
1813 | int err; | |
1814 | int i; | |
1815 | ||
1816 | n_registered = 0; | |
1817 | for (i = 0; i < ARRAY_SIZE(dp_genl_families); i++) { | |
1818 | const struct genl_family_and_ops *f = &dp_genl_families[i]; | |
1819 | ||
1820 | err = genl_register_family_with_ops(f->family, f->ops, | |
1821 | f->n_ops); | |
1822 | if (err) | |
1823 | goto error; | |
1824 | n_registered++; | |
1825 | ||
1826 | if (f->group) { | |
1827 | err = genl_register_mc_group(f->family, f->group); | |
1828 | if (err) | |
1829 | goto error; | |
1830 | } | |
1831 | } | |
1832 | ||
1833 | return 0; | |
1834 | ||
1835 | error: | |
1836 | dp_unregister_genl(n_registered); | |
1837 | return err; | |
1838 | } | |
1839 | ||
46df7b81 PS |
1840 | static int __net_init ovs_init_net(struct net *net) |
1841 | { | |
1842 | struct ovs_net *ovs_net = net_generic(net, ovs_net_id); | |
1843 | ||
1844 | INIT_LIST_HEAD(&ovs_net->dps); | |
8e4e1713 | 1845 | INIT_WORK(&ovs_net->dp_notify_work, ovs_dp_notify_wq); |
46df7b81 PS |
1846 | return 0; |
1847 | } | |
1848 | ||
1849 | static void __net_exit ovs_exit_net(struct net *net) | |
1850 | { | |
46df7b81 | 1851 | struct datapath *dp, *dp_next; |
8e4e1713 | 1852 | struct ovs_net *ovs_net = net_generic(net, ovs_net_id); |
46df7b81 | 1853 | |
8e4e1713 | 1854 | ovs_lock(); |
46df7b81 PS |
1855 | list_for_each_entry_safe(dp, dp_next, &ovs_net->dps, list_node) |
1856 | __dp_destroy(dp); | |
8e4e1713 PS |
1857 | ovs_unlock(); |
1858 | ||
1859 | cancel_work_sync(&ovs_net->dp_notify_work); | |
46df7b81 PS |
1860 | } |
1861 | ||
1862 | static struct pernet_operations ovs_net_ops = { | |
1863 | .init = ovs_init_net, | |
1864 | .exit = ovs_exit_net, | |
1865 | .id = &ovs_net_id, | |
1866 | .size = sizeof(struct ovs_net), | |
1867 | }; | |
1868 | ||
ccb1352e JG |
1869 | static int __init dp_init(void) |
1870 | { | |
ccb1352e JG |
1871 | int err; |
1872 | ||
3523b29b | 1873 | BUILD_BUG_ON(sizeof(struct ovs_skb_cb) > FIELD_SIZEOF(struct sk_buff, cb)); |
ccb1352e JG |
1874 | |
1875 | pr_info("Open vSwitch switching datapath\n"); | |
1876 | ||
1877 | err = ovs_flow_init(); | |
1878 | if (err) | |
1879 | goto error; | |
1880 | ||
1881 | err = ovs_vport_init(); | |
1882 | if (err) | |
1883 | goto error_flow_exit; | |
1884 | ||
46df7b81 | 1885 | err = register_pernet_device(&ovs_net_ops); |
ccb1352e JG |
1886 | if (err) |
1887 | goto error_vport_exit; | |
1888 | ||
46df7b81 PS |
1889 | err = register_netdevice_notifier(&ovs_dp_device_notifier); |
1890 | if (err) | |
1891 | goto error_netns_exit; | |
1892 | ||
ccb1352e JG |
1893 | err = dp_register_genl(); |
1894 | if (err < 0) | |
1895 | goto error_unreg_notifier; | |
1896 | ||
ccb1352e JG |
1897 | return 0; |
1898 | ||
1899 | error_unreg_notifier: | |
1900 | unregister_netdevice_notifier(&ovs_dp_device_notifier); | |
46df7b81 PS |
1901 | error_netns_exit: |
1902 | unregister_pernet_device(&ovs_net_ops); | |
ccb1352e JG |
1903 | error_vport_exit: |
1904 | ovs_vport_exit(); | |
1905 | error_flow_exit: | |
1906 | ovs_flow_exit(); | |
1907 | error: | |
1908 | return err; | |
1909 | } | |
1910 | ||
1911 | static void dp_cleanup(void) | |
1912 | { | |
ccb1352e JG |
1913 | dp_unregister_genl(ARRAY_SIZE(dp_genl_families)); |
1914 | unregister_netdevice_notifier(&ovs_dp_device_notifier); | |
46df7b81 PS |
1915 | unregister_pernet_device(&ovs_net_ops); |
1916 | rcu_barrier(); | |
ccb1352e JG |
1917 | ovs_vport_exit(); |
1918 | ovs_flow_exit(); | |
1919 | } | |
1920 | ||
1921 | module_init(dp_init); | |
1922 | module_exit(dp_cleanup); | |
1923 | ||
1924 | MODULE_DESCRIPTION("Open vSwitch switching datapath"); | |
1925 | MODULE_LICENSE("GPL"); |