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Commit | Line | Data |
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064af421 | 1 | /* |
e23775f2 | 2 | * Copyright (c) 2007-2015 Nicira, Inc. |
a14bc59f | 3 | * |
a9a29d22 JG |
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 | |
064af421 BP |
17 | */ |
18 | ||
dfffaef1 JP |
19 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
20 | ||
064af421 BP |
21 | #include <linux/init.h> |
22 | #include <linux/module.h> | |
064af421 | 23 | #include <linux/if_arp.h> |
064af421 BP |
24 | #include <linux/if_vlan.h> |
25 | #include <linux/in.h> | |
26 | #include <linux/ip.h> | |
982b8810 | 27 | #include <linux/jhash.h> |
064af421 BP |
28 | #include <linux/delay.h> |
29 | #include <linux/time.h> | |
30 | #include <linux/etherdevice.h> | |
ed099e92 | 31 | #include <linux/genetlink.h> |
064af421 BP |
32 | #include <linux/kernel.h> |
33 | #include <linux/kthread.h> | |
064af421 BP |
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> | |
39 | #include <linux/version.h> | |
40 | #include <linux/ethtool.h> | |
064af421 | 41 | #include <linux/wait.h> |
064af421 | 42 | #include <asm/div64.h> |
656a0e37 | 43 | #include <linux/highmem.h> |
064af421 BP |
44 | #include <linux/netfilter_bridge.h> |
45 | #include <linux/netfilter_ipv4.h> | |
46 | #include <linux/inetdevice.h> | |
47 | #include <linux/list.h> | |
077257b8 | 48 | #include <linux/openvswitch.h> |
064af421 | 49 | #include <linux/rculist.h> |
064af421 | 50 | #include <linux/dmi.h> |
36956a7d | 51 | #include <net/genetlink.h> |
2a4999f3 PS |
52 | #include <net/net_namespace.h> |
53 | #include <net/netns/generic.h> | |
907c26a8 | 54 | #include <net/nsh.h> |
064af421 | 55 | |
064af421 | 56 | #include "datapath.h" |
038e34ab | 57 | #include "conntrack.h" |
064af421 | 58 | #include "flow.h" |
d103f479 | 59 | #include "flow_table.h" |
a097c0b2 | 60 | #include "flow_netlink.h" |
1cb57039 | 61 | #include "meter.h" |
e23775f2 | 62 | #include "gso.h" |
f2459fe7 | 63 | #include "vport-internal_dev.h" |
d5de5b0d | 64 | #include "vport-netdev.h" |
064af421 | 65 | |
f56f0b73 | 66 | unsigned int ovs_net_id __read_mostly; |
2a4999f3 | 67 | |
cb25142c PS |
68 | static struct genl_family dp_packet_genl_family; |
69 | static struct genl_family dp_flow_genl_family; | |
70 | static struct genl_family dp_datapath_genl_family; | |
71 | ||
bc619e29 JS |
72 | static const struct nla_policy flow_policy[]; |
73 | ||
e515e66a GR |
74 | static const struct genl_multicast_group ovs_dp_flow_multicast_group = { |
75 | .name = OVS_FLOW_MCGROUP, | |
cb25142c PS |
76 | }; |
77 | ||
e515e66a GR |
78 | static const struct genl_multicast_group ovs_dp_datapath_multicast_group = { |
79 | .name = OVS_DATAPATH_MCGROUP, | |
cb25142c PS |
80 | }; |
81 | ||
e515e66a GR |
82 | const struct genl_multicast_group ovs_dp_vport_multicast_group = { |
83 | .name = OVS_VPORT_MCGROUP, | |
cb25142c PS |
84 | }; |
85 | ||
afad3556 | 86 | /* Check if need to build a reply message. |
af465b67 PS |
87 | * OVS userspace sets the NLM_F_ECHO flag if it needs the reply. |
88 | */ | |
114fce23 SG |
89 | static bool ovs_must_notify(struct genl_family *family, struct genl_info *info, |
90 | unsigned int group) | |
afad3556 JR |
91 | { |
92 | return info->nlhdr->nlmsg_flags & NLM_F_ECHO || | |
6233a1bd | 93 | genl_has_listeners(family, genl_info_net(info), group); |
afad3556 JR |
94 | } |
95 | ||
e515e66a GR |
96 | static void ovs_notify(struct genl_family *family, |
97 | const struct genl_multicast_group *grp, | |
cb25142c | 98 | struct sk_buff *skb, struct genl_info *info) |
e297c6b7 | 99 | { |
0643a78b | 100 | genl_notify(family, skb, info, GROUP_ID(grp), GFP_KERNEL); |
e297c6b7 TG |
101 | } |
102 | ||
ed099e92 BP |
103 | /** |
104 | * DOC: Locking: | |
064af421 | 105 | * |
cd2a59e9 PS |
106 | * All writes e.g. Writes to device state (add/remove datapath, port, set |
107 | * operations on vports, etc.), Writes to other state (flow table | |
108 | * modifications, set miscellaneous datapath parameters, etc.) are protected | |
109 | * by ovs_lock. | |
ed099e92 BP |
110 | * |
111 | * Reads are protected by RCU. | |
112 | * | |
113 | * There are a few special cases (mostly stats) that have their own | |
114 | * synchronization but they nest under all of above and don't interact with | |
115 | * each other. | |
cd2a59e9 PS |
116 | * |
117 | * The RTNL lock nests inside ovs_mutex. | |
064af421 | 118 | */ |
ed099e92 | 119 | |
cd2a59e9 PS |
120 | static DEFINE_MUTEX(ovs_mutex); |
121 | ||
122 | void ovs_lock(void) | |
123 | { | |
124 | mutex_lock(&ovs_mutex); | |
125 | } | |
126 | ||
127 | void ovs_unlock(void) | |
128 | { | |
129 | mutex_unlock(&ovs_mutex); | |
130 | } | |
131 | ||
132 | #ifdef CONFIG_LOCKDEP | |
133 | int lockdep_ovsl_is_held(void) | |
134 | { | |
135 | if (debug_locks) | |
136 | return lockdep_is_held(&ovs_mutex); | |
137 | else | |
138 | return 1; | |
139 | } | |
140 | #endif | |
141 | ||
5ae440c3 | 142 | static int queue_gso_packets(struct datapath *dp, struct sk_buff *, |
f1f60b85 | 143 | const struct sw_flow_key *, |
4c7804f1 WT |
144 | const struct dp_upcall_info *, |
145 | uint32_t cutlen); | |
5ae440c3 | 146 | static int queue_userspace_packet(struct datapath *dp, struct sk_buff *, |
7d16c847 | 147 | const struct sw_flow_key *, |
4c7804f1 WT |
148 | const struct dp_upcall_info *, |
149 | uint32_t cutlen); | |
064af421 | 150 | |
cd2a59e9 | 151 | /* Must be called with rcu_read_lock or ovs_mutex. */ |
850b6b3b | 152 | const char *ovs_dp_name(const struct datapath *dp) |
f2459fe7 | 153 | { |
cd2a59e9 | 154 | struct vport *vport = ovs_vport_ovsl_rcu(dp, OVSP_LOCAL); |
e23775f2 | 155 | return ovs_vport_name(vport); |
f2459fe7 JG |
156 | } |
157 | ||
f1f60b85 | 158 | static int get_dpifindex(const struct datapath *dp) |
99769a40 JG |
159 | { |
160 | struct vport *local; | |
161 | int ifindex; | |
162 | ||
163 | rcu_read_lock(); | |
164 | ||
95b1d73a | 165 | local = ovs_vport_rcu(dp, OVSP_LOCAL); |
99769a40 | 166 | if (local) |
e23775f2 | 167 | ifindex = local->dev->ifindex; |
99769a40 JG |
168 | else |
169 | ifindex = 0; | |
170 | ||
171 | rcu_read_unlock(); | |
172 | ||
173 | return ifindex; | |
174 | } | |
175 | ||
46c6a11d JG |
176 | static void destroy_dp_rcu(struct rcu_head *rcu) |
177 | { | |
178 | struct datapath *dp = container_of(rcu, struct datapath, rcu); | |
46c6a11d | 179 | |
e379e4d1 | 180 | ovs_flow_tbl_destroy(&dp->table); |
46c6a11d | 181 | free_percpu(dp->stats_percpu); |
95b1d73a | 182 | kfree(dp->ports); |
1cb57039 | 183 | ovs_meters_exit(dp); |
5ca1ba48 | 184 | kfree(dp); |
46c6a11d JG |
185 | } |
186 | ||
95b1d73a PS |
187 | static struct hlist_head *vport_hash_bucket(const struct datapath *dp, |
188 | u16 port_no) | |
189 | { | |
190 | return &dp->ports[port_no & (DP_VPORT_HASH_BUCKETS - 1)]; | |
191 | } | |
192 | ||
aa917006 | 193 | /* Called with ovs_mutex or RCU read lock. */ |
95b1d73a PS |
194 | struct vport *ovs_lookup_vport(const struct datapath *dp, u16 port_no) |
195 | { | |
196 | struct vport *vport; | |
95b1d73a PS |
197 | struct hlist_head *head; |
198 | ||
199 | head = vport_hash_bucket(dp, port_no); | |
f8dfbcb7 | 200 | hlist_for_each_entry_rcu(vport, head, dp_hash_node) { |
95b1d73a PS |
201 | if (vport->port_no == port_no) |
202 | return vport; | |
203 | } | |
204 | return NULL; | |
205 | } | |
206 | ||
cd2a59e9 | 207 | /* Called with ovs_mutex. */ |
c19e6535 | 208 | static struct vport *new_vport(const struct vport_parms *parms) |
064af421 | 209 | { |
f2459fe7 | 210 | struct vport *vport; |
f2459fe7 | 211 | |
850b6b3b | 212 | vport = ovs_vport_add(parms); |
c19e6535 BP |
213 | if (!IS_ERR(vport)) { |
214 | struct datapath *dp = parms->dp; | |
95b1d73a | 215 | struct hlist_head *head = vport_hash_bucket(dp, vport->port_no); |
064af421 | 216 | |
95b1d73a | 217 | hlist_add_head_rcu(&vport->dp_hash_node, head); |
c19e6535 | 218 | } |
c19e6535 | 219 | return vport; |
064af421 BP |
220 | } |
221 | ||
850b6b3b | 222 | void ovs_dp_detach_port(struct vport *p) |
064af421 | 223 | { |
cd2a59e9 | 224 | ASSERT_OVSL(); |
064af421 | 225 | |
064af421 | 226 | /* First drop references to device. */ |
95b1d73a | 227 | hlist_del_rcu(&p->dp_hash_node); |
f2459fe7 | 228 | |
7237e4f4 | 229 | /* Then destroy it. */ |
850b6b3b | 230 | ovs_vport_del(p); |
064af421 BP |
231 | } |
232 | ||
fb66fbd1 | 233 | /* Must be called with rcu_read_lock. */ |
e74d4817 | 234 | void ovs_dp_process_packet(struct sk_buff *skb, struct sw_flow_key *key) |
064af421 | 235 | { |
a6059080 | 236 | const struct vport *p = OVS_CB(skb)->input_vport; |
064af421 | 237 | struct datapath *dp = p->dp; |
3544358a | 238 | struct sw_flow *flow; |
ad50cb60 | 239 | struct sw_flow_actions *sf_acts; |
064af421 | 240 | struct dp_stats_percpu *stats; |
e9141eec | 241 | u64 *stats_counter; |
4fa72a95 | 242 | u32 n_mask_hit; |
064af421 | 243 | |
70dbc259 | 244 | stats = this_cpu_ptr(dp->stats_percpu); |
a063b0df | 245 | |
52a23d92 | 246 | /* Look up flow. */ |
e74d4817 | 247 | flow = ovs_flow_tbl_lookup_stats(&dp->table, key, skb_get_hash(skb), |
5604935e | 248 | &n_mask_hit); |
52a23d92 JG |
249 | if (unlikely(!flow)) { |
250 | struct dp_upcall_info upcall; | |
a7d607c5 | 251 | int error; |
52a23d92 | 252 | |
0e469d3b | 253 | memset(&upcall, 0, sizeof(upcall)); |
52a23d92 | 254 | upcall.cmd = OVS_PACKET_CMD_MISS; |
beb1c69a | 255 | upcall.portid = ovs_vport_find_upcall_portid(p, skb); |
a94ebc39 | 256 | upcall.mru = OVS_CB(skb)->mru; |
4c7804f1 | 257 | error = ovs_dp_upcall(dp, skb, key, &upcall, 0); |
a7d607c5 LR |
258 | if (unlikely(error)) |
259 | kfree_skb(skb); | |
260 | else | |
261 | consume_skb(skb); | |
52a23d92 JG |
262 | stats_counter = &stats->n_missed; |
263 | goto out; | |
264 | } | |
265 | ||
e74d4817 | 266 | ovs_flow_stats_update(flow, key->tp.flags, skb); |
ad50cb60 | 267 | sf_acts = rcu_dereference(flow->sf_acts); |
7d16c847 PS |
268 | ovs_execute_actions(dp, skb, sf_acts, key); |
269 | ||
b0b906cc | 270 | stats_counter = &stats->n_hit; |
55574bb0 | 271 | |
8819fac7 | 272 | out: |
55574bb0 | 273 | /* Update datapath statistics. */ |
b81deb15 | 274 | u64_stats_update_begin(&stats->syncp); |
e9141eec | 275 | (*stats_counter)++; |
4fa72a95 | 276 | stats->n_mask_hit += n_mask_hit; |
b81deb15 | 277 | u64_stats_update_end(&stats->syncp); |
064af421 BP |
278 | } |
279 | ||
850b6b3b | 280 | int ovs_dp_upcall(struct datapath *dp, struct sk_buff *skb, |
f1f60b85 | 281 | const struct sw_flow_key *key, |
4c7804f1 WT |
282 | const struct dp_upcall_info *upcall_info, |
283 | uint32_t cutlen) | |
aa5a8fdc JG |
284 | { |
285 | struct dp_stats_percpu *stats; | |
286 | int err; | |
287 | ||
28aea917 | 288 | if (upcall_info->portid == 0) { |
b063d9f0 | 289 | err = -ENOTCONN; |
b063d9f0 JG |
290 | goto err; |
291 | } | |
292 | ||
7257b535 | 293 | if (!skb_is_gso(skb)) |
4c7804f1 | 294 | err = queue_userspace_packet(dp, skb, key, upcall_info, cutlen); |
7257b535 | 295 | else |
4c7804f1 | 296 | err = queue_gso_packets(dp, skb, key, upcall_info, cutlen); |
d76195db JG |
297 | if (err) |
298 | goto err; | |
299 | ||
300 | return 0; | |
aa5a8fdc | 301 | |
aa5a8fdc | 302 | err: |
70dbc259 | 303 | stats = this_cpu_ptr(dp->stats_percpu); |
aa5a8fdc | 304 | |
b81deb15 | 305 | u64_stats_update_begin(&stats->syncp); |
aa5a8fdc | 306 | stats->n_lost++; |
b81deb15 | 307 | u64_stats_update_end(&stats->syncp); |
aa5a8fdc | 308 | |
aa5a8fdc | 309 | return err; |
982b8810 BP |
310 | } |
311 | ||
5ae440c3 | 312 | static int queue_gso_packets(struct datapath *dp, struct sk_buff *skb, |
f1f60b85 | 313 | const struct sw_flow_key *key, |
4c7804f1 WT |
314 | const struct dp_upcall_info *upcall_info, |
315 | uint32_t cutlen) | |
cb5087ca | 316 | { |
969b8e6b | 317 | #ifdef HAVE_SKB_GSO_UDP |
f54a7a5d | 318 | unsigned int gso_type = skb_shinfo(skb)->gso_type; |
7257b535 | 319 | struct sw_flow_key later_key; |
969b8e6b | 320 | #endif |
7257b535 | 321 | struct sk_buff *segs, *nskb; |
b2a23c4e | 322 | struct ovs_skb_cb ovs_cb; |
7257b535 | 323 | int err; |
cb5087ca | 324 | |
b2a23c4e | 325 | ovs_cb = *OVS_CB(skb); |
1d04cd4e | 326 | segs = __skb_gso_segment(skb, NETIF_F_SG, false); |
b2a23c4e | 327 | *OVS_CB(skb) = ovs_cb; |
79089764 PS |
328 | if (IS_ERR(segs)) |
329 | return PTR_ERR(segs); | |
d1da7669 PS |
330 | if (segs == NULL) |
331 | return -EINVAL; | |
969b8e6b | 332 | #ifdef HAVE_SKB_GSO_UDP |
9b277b39 | 333 | if (gso_type & SKB_GSO_UDP) { |
c135bba1 | 334 | /* The initial flow key extracted by ovs_flow_key_extract() |
9b277b39 PS |
335 | * in this case is for a first fragment, so we need to |
336 | * properly mark later fragments. | |
337 | */ | |
e74d4817 | 338 | later_key = *key; |
9b277b39 PS |
339 | later_key.ip.frag = OVS_FRAG_TYPE_LATER; |
340 | } | |
969b8e6b | 341 | #endif |
7257b535 BP |
342 | /* Queue all of the segments. */ |
343 | skb = segs; | |
cb5087ca | 344 | do { |
b2a23c4e | 345 | *OVS_CB(skb) = ovs_cb; |
969b8e6b | 346 | #ifdef HAVE_SKB_GSO_UDP |
9b277b39 | 347 | if (gso_type & SKB_GSO_UDP && skb != segs) |
e74d4817 | 348 | key = &later_key; |
969b8e6b | 349 | #endif |
4c7804f1 | 350 | err = queue_userspace_packet(dp, skb, key, upcall_info, cutlen); |
982b8810 | 351 | if (err) |
7257b535 | 352 | break; |
856081f6 | 353 | |
36ce148c | 354 | } while ((skb = skb->next)); |
cb5087ca | 355 | |
7257b535 BP |
356 | /* Free all of the segments. */ |
357 | skb = segs; | |
358 | do { | |
359 | nskb = skb->next; | |
360 | if (err) | |
361 | kfree_skb(skb); | |
362 | else | |
363 | consume_skb(skb); | |
364 | } while ((skb = nskb)); | |
365 | return err; | |
366 | } | |
367 | ||
8b7ea2d4 | 368 | static size_t upcall_msg_size(const struct dp_upcall_info *upcall_info, |
6b330a60 | 369 | unsigned int hdrlen, int actions_attrlen) |
0afa2373 TG |
370 | { |
371 | size_t size = NLMSG_ALIGN(sizeof(struct ovs_header)) | |
533bea51 | 372 | + nla_total_size(hdrlen) /* OVS_PACKET_ATTR_PACKET */ |
039fb36c WT |
373 | + nla_total_size(ovs_key_attr_size()) /* OVS_PACKET_ATTR_KEY */ |
374 | + nla_total_size(sizeof(unsigned int)); /* OVS_PACKET_ATTR_LEN */ | |
0afa2373 TG |
375 | |
376 | /* OVS_PACKET_ATTR_USERDATA */ | |
8b7ea2d4 WZ |
377 | if (upcall_info->userdata) |
378 | size += NLA_ALIGN(upcall_info->userdata->nla_len); | |
379 | ||
380 | /* OVS_PACKET_ATTR_EGRESS_TUN_KEY */ | |
381 | if (upcall_info->egress_tun_info) | |
382 | size += nla_total_size(ovs_tun_key_attr_size()); | |
0afa2373 | 383 | |
0e469d3b NM |
384 | /* OVS_PACKET_ATTR_ACTIONS */ |
385 | if (upcall_info->actions_len) | |
6b330a60 | 386 | size += nla_total_size(actions_attrlen); |
0e469d3b | 387 | |
a94ebc39 JS |
388 | /* OVS_PACKET_ATTR_MRU */ |
389 | if (upcall_info->mru) | |
390 | size += nla_total_size(sizeof(upcall_info->mru)); | |
391 | ||
0afa2373 TG |
392 | return size; |
393 | } | |
394 | ||
a94ebc39 JS |
395 | static void pad_packet(struct datapath *dp, struct sk_buff *skb) |
396 | { | |
397 | if (!(dp->user_features & OVS_DP_F_UNALIGNED)) { | |
398 | size_t plen = NLA_ALIGN(skb->len) - skb->len; | |
399 | ||
400 | if (plen > 0) | |
0ace0a26 | 401 | skb_put_zero(skb, plen); |
a94ebc39 JS |
402 | } |
403 | } | |
404 | ||
5ae440c3 | 405 | static int queue_userspace_packet(struct datapath *dp, struct sk_buff *skb, |
f1f60b85 | 406 | const struct sw_flow_key *key, |
4c7804f1 WT |
407 | const struct dp_upcall_info *upcall_info, |
408 | uint32_t cutlen) | |
7257b535 BP |
409 | { |
410 | struct ovs_header *upcall; | |
6161d3fd | 411 | struct sk_buff *nskb = NULL; |
82706a6f | 412 | struct sk_buff *user_skb = NULL; /* to be queued to userspace */ |
7257b535 | 413 | struct nlattr *nla; |
978188b2 | 414 | size_t len; |
533bea51 | 415 | unsigned int hlen; |
5ae440c3 TG |
416 | int err, dp_ifindex; |
417 | ||
418 | dp_ifindex = get_dpifindex(dp); | |
419 | if (!dp_ifindex) | |
420 | return -ENODEV; | |
7257b535 | 421 | |
efd8a18e | 422 | if (skb_vlan_tag_present(skb)) { |
6161d3fd JG |
423 | nskb = skb_clone(skb, GFP_ATOMIC); |
424 | if (!nskb) | |
425 | return -ENOMEM; | |
07ac71ea | 426 | |
8063e095 | 427 | nskb = __vlan_hwaccel_push_inside(nskb); |
07ac71ea PS |
428 | if (!nskb) |
429 | return -ENOMEM; | |
430 | ||
6161d3fd JG |
431 | skb = nskb; |
432 | } | |
433 | ||
434 | if (nla_attr_size(skb->len) > USHRT_MAX) { | |
435 | err = -EFBIG; | |
436 | goto out; | |
437 | } | |
7257b535 | 438 | |
533bea51 TG |
439 | /* Complete checksum if needed */ |
440 | if (skb->ip_summed == CHECKSUM_PARTIAL && | |
a0c9fedc | 441 | (err = skb_csum_hwoffload_help(skb, 0))) |
533bea51 TG |
442 | goto out; |
443 | ||
444 | /* Older versions of OVS user space enforce alignment of the last | |
445 | * Netlink attribute to NLA_ALIGNTO which would require extensive | |
446 | * padding logic. Only perform zerocopy if padding is not required. | |
447 | */ | |
448 | if (dp->user_features & OVS_DP_F_UNALIGNED) | |
449 | hlen = skb_zerocopy_headlen(skb); | |
450 | else | |
451 | hlen = skb->len; | |
452 | ||
6b330a60 GR |
453 | len = upcall_msg_size(upcall_info, hlen - cutlen, |
454 | OVS_CB(skb)->acts_origlen); | |
40c08cda | 455 | user_skb = genlmsg_new(len, GFP_ATOMIC); |
6161d3fd JG |
456 | if (!user_skb) { |
457 | err = -ENOMEM; | |
458 | goto out; | |
459 | } | |
7257b535 BP |
460 | |
461 | upcall = genlmsg_put(user_skb, 0, 0, &dp_packet_genl_family, | |
462 | 0, upcall_info->cmd); | |
f463bdc9 KL |
463 | if (!upcall) { |
464 | err = -EINVAL; | |
465 | goto out; | |
466 | } | |
7257b535 BP |
467 | upcall->dp_ifindex = dp_ifindex; |
468 | ||
db7f2238 | 469 | err = ovs_nla_put_key(key, key, OVS_PACKET_ATTR_KEY, false, user_skb); |
9a621f82 | 470 | BUG_ON(err); |
7257b535 BP |
471 | |
472 | if (upcall_info->userdata) | |
e995e3df | 473 | __nla_put(user_skb, OVS_PACKET_ATTR_USERDATA, |
462a988b | 474 | nla_len(upcall_info->userdata), |
e995e3df | 475 | nla_data(upcall_info->userdata)); |
7257b535 | 476 | |
e23775f2 | 477 | |
8b7ea2d4 | 478 | if (upcall_info->egress_tun_info) { |
09c33996 YHW |
479 | nla = nla_nest_start_noflag(user_skb, |
480 | OVS_PACKET_ATTR_EGRESS_TUN_KEY); | |
eee4c8eb KL |
481 | if (!nla) { |
482 | err = -EMSGSIZE; | |
483 | goto out; | |
484 | } | |
aad7cb91 PS |
485 | err = ovs_nla_put_tunnel_info(user_skb, |
486 | upcall_info->egress_tun_info); | |
8b7ea2d4 WZ |
487 | BUG_ON(err); |
488 | nla_nest_end(user_skb, nla); | |
489 | } | |
490 | ||
0e469d3b | 491 | if (upcall_info->actions_len) { |
09c33996 | 492 | nla = nla_nest_start_noflag(user_skb, OVS_PACKET_ATTR_ACTIONS); |
eee4c8eb KL |
493 | if (!nla) { |
494 | err = -EMSGSIZE; | |
495 | goto out; | |
496 | } | |
0e469d3b NM |
497 | err = ovs_nla_put_actions(upcall_info->actions, |
498 | upcall_info->actions_len, | |
499 | user_skb); | |
500 | if (!err) | |
501 | nla_nest_end(user_skb, nla); | |
502 | else | |
503 | nla_nest_cancel(user_skb, nla); | |
504 | } | |
505 | ||
a94ebc39 JS |
506 | /* Add OVS_PACKET_ATTR_MRU */ |
507 | if (upcall_info->mru) { | |
508 | if (nla_put_u16(user_skb, OVS_PACKET_ATTR_MRU, | |
509 | upcall_info->mru)) { | |
510 | err = -ENOBUFS; | |
511 | goto out; | |
512 | } | |
513 | pad_packet(dp, user_skb); | |
514 | } | |
515 | ||
039fb36c WT |
516 | /* Add OVS_PACKET_ATTR_LEN when packet is truncated */ |
517 | if (cutlen > 0) { | |
518 | if (nla_put_u32(user_skb, OVS_PACKET_ATTR_LEN, | |
519 | skb->len)) { | |
520 | err = -ENOBUFS; | |
521 | goto out; | |
522 | } | |
523 | pad_packet(dp, user_skb); | |
524 | } | |
525 | ||
533bea51 | 526 | /* Only reserve room for attribute header, packet data is added |
af465b67 PS |
527 | * in skb_zerocopy() |
528 | */ | |
533bea51 TG |
529 | if (!(nla = nla_reserve(user_skb, OVS_PACKET_ATTR_PACKET, 0))) { |
530 | err = -ENOBUFS; | |
531 | goto out; | |
532 | } | |
4c7804f1 | 533 | nla->nla_len = nla_attr_size(skb->len - cutlen); |
bed53bd1 | 534 | |
4c7804f1 | 535 | err = skb_zerocopy(user_skb, skb, skb->len - cutlen, hlen); |
2c272bd9 ZK |
536 | if (err) |
537 | goto out; | |
7257b535 | 538 | |
ef507cec | 539 | /* Pad OVS_PACKET_ATTR_PACKET if linear copy was performed */ |
a94ebc39 | 540 | pad_packet(dp, user_skb); |
ef507cec | 541 | |
533bea51 | 542 | ((struct nlmsghdr *) user_skb->data)->nlmsg_len = user_skb->len; |
6161d3fd | 543 | |
533bea51 | 544 | err = genlmsg_unicast(ovs_dp_get_net(dp), user_skb, upcall_info->portid); |
82706a6f | 545 | user_skb = NULL; |
6161d3fd | 546 | out: |
2c272bd9 ZK |
547 | if (err) |
548 | skb_tx_error(skb); | |
82706a6f | 549 | kfree_skb(user_skb); |
6161d3fd JG |
550 | kfree_skb(nskb); |
551 | return err; | |
cb5087ca BP |
552 | } |
553 | ||
df2c07f4 | 554 | static int ovs_packet_cmd_execute(struct sk_buff *skb, struct genl_info *info) |
064af421 | 555 | { |
df2c07f4 | 556 | struct ovs_header *ovs_header = info->userhdr; |
a94ebc39 | 557 | struct net *net = sock_net(skb->sk); |
982b8810 | 558 | struct nlattr **a = info->attrs; |
e0e57990 | 559 | struct sw_flow_actions *acts; |
982b8810 | 560 | struct sk_buff *packet; |
e0e57990 | 561 | struct sw_flow *flow; |
ad50cb60 | 562 | struct sw_flow_actions *sf_acts; |
f7cd0081 | 563 | struct datapath *dp; |
a6059080 | 564 | struct vport *input_vport; |
a94ebc39 | 565 | u16 mru = 0; |
3f19d399 | 566 | int len; |
d6569377 | 567 | int err; |
2e460098 | 568 | bool log = !a[OVS_PACKET_ATTR_PROBE]; |
064af421 | 569 | |
f7cd0081 | 570 | err = -EINVAL; |
df2c07f4 | 571 | if (!a[OVS_PACKET_ATTR_PACKET] || !a[OVS_PACKET_ATTR_KEY] || |
7c3072cc | 572 | !a[OVS_PACKET_ATTR_ACTIONS]) |
e5cad958 | 573 | goto err; |
064af421 | 574 | |
df2c07f4 | 575 | len = nla_len(a[OVS_PACKET_ATTR_PACKET]); |
3f19d399 | 576 | packet = __dev_alloc_skb(NET_IP_ALIGN + len, GFP_KERNEL); |
f7cd0081 BP |
577 | err = -ENOMEM; |
578 | if (!packet) | |
e5cad958 | 579 | goto err; |
3f19d399 BP |
580 | skb_reserve(packet, NET_IP_ALIGN); |
581 | ||
bf3d6fce | 582 | nla_memcpy(__skb_put(packet, len), a[OVS_PACKET_ATTR_PACKET], len); |
8d5ebd83 | 583 | |
a94ebc39 JS |
584 | /* Set packet's mru */ |
585 | if (a[OVS_PACKET_ATTR_MRU]) { | |
586 | mru = nla_get_u16(a[OVS_PACKET_ATTR_MRU]); | |
587 | packet->ignore_df = 1; | |
588 | } | |
589 | OVS_CB(packet)->mru = mru; | |
590 | ||
e0e57990 | 591 | /* Build an sw_flow for sending this packet. */ |
df65fec1 | 592 | flow = ovs_flow_alloc(); |
e0e57990 BP |
593 | err = PTR_ERR(flow); |
594 | if (IS_ERR(flow)) | |
e5cad958 | 595 | goto err_kfree_skb; |
064af421 | 596 | |
038e34ab JS |
597 | err = ovs_flow_key_extract_userspace(net, a[OVS_PACKET_ATTR_KEY], |
598 | packet, &flow->key, log); | |
e0e57990 | 599 | if (err) |
9321954a | 600 | goto err_flow_free; |
e0e57990 | 601 | |
a94ebc39 | 602 | err = ovs_nla_copy_actions(net, a[OVS_PACKET_ATTR_ACTIONS], |
9233cef7 | 603 | &flow->key, &acts, log); |
9b405f1a PS |
604 | if (err) |
605 | goto err_flow_free; | |
e0e57990 | 606 | |
ff27161e | 607 | rcu_assign_pointer(flow->sf_acts, acts); |
abff858b | 608 | packet->priority = flow->key.phy.priority; |
3025a772 | 609 | packet->mark = flow->key.phy.skb_mark; |
e0e57990 | 610 | |
d6569377 | 611 | rcu_read_lock(); |
a94ebc39 | 612 | dp = get_dp_rcu(net, ovs_header->dp_ifindex); |
f7cd0081 | 613 | err = -ENODEV; |
e5cad958 BP |
614 | if (!dp) |
615 | goto err_unlock; | |
cc4015df | 616 | |
a6059080 AZ |
617 | input_vport = ovs_vport_rcu(dp, flow->key.phy.in_port); |
618 | if (!input_vport) | |
619 | input_vport = ovs_vport_rcu(dp, OVSP_LOCAL); | |
620 | ||
621 | if (!input_vport) | |
622 | goto err_unlock; | |
623 | ||
e23775f2 | 624 | packet->dev = input_vport->dev; |
a6059080 | 625 | OVS_CB(packet)->input_vport = input_vport; |
ad50cb60 | 626 | sf_acts = rcu_dereference(flow->sf_acts); |
a6059080 | 627 | |
e9141eec | 628 | local_bh_disable(); |
7d16c847 | 629 | err = ovs_execute_actions(dp, packet, sf_acts, &flow->key); |
e9141eec | 630 | local_bh_enable(); |
d6569377 | 631 | rcu_read_unlock(); |
e0e57990 | 632 | |
a1c564be | 633 | ovs_flow_free(flow, false); |
e5cad958 | 634 | return err; |
064af421 | 635 | |
e5cad958 BP |
636 | err_unlock: |
637 | rcu_read_unlock(); | |
9321954a | 638 | err_flow_free: |
a1c564be | 639 | ovs_flow_free(flow, false); |
e5cad958 BP |
640 | err_kfree_skb: |
641 | kfree_skb(packet); | |
642 | err: | |
d6569377 | 643 | return err; |
064af421 BP |
644 | } |
645 | ||
df2c07f4 | 646 | static const struct nla_policy packet_policy[OVS_PACKET_ATTR_MAX + 1] = { |
7c3072cc | 647 | [OVS_PACKET_ATTR_PACKET] = { .len = ETH_HLEN }, |
df2c07f4 JP |
648 | [OVS_PACKET_ATTR_KEY] = { .type = NLA_NESTED }, |
649 | [OVS_PACKET_ATTR_ACTIONS] = { .type = NLA_NESTED }, | |
2e460098 | 650 | [OVS_PACKET_ATTR_PROBE] = { .type = NLA_FLAG }, |
a94ebc39 | 651 | [OVS_PACKET_ATTR_MRU] = { .type = NLA_U16 }, |
982b8810 BP |
652 | }; |
653 | ||
18fd3a52 | 654 | static struct genl_ops dp_packet_genl_ops[] = { |
df2c07f4 | 655 | { .cmd = OVS_PACKET_CMD_EXECUTE, |
f1e9590e YHW |
656 | #ifdef HAVE_GENL_VALIDATE_FLAGS |
657 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, | |
658 | #endif | |
a6a8674d | 659 | .flags = GENL_UNS_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */ |
2ef0f1c2 | 660 | #ifdef HAVE_GENL_OPS_POLICY |
982b8810 | 661 | .policy = packet_policy, |
2ef0f1c2 | 662 | #endif |
df2c07f4 | 663 | .doit = ovs_packet_cmd_execute |
982b8810 BP |
664 | } |
665 | }; | |
666 | ||
ba63fe26 | 667 | static struct genl_family dp_packet_genl_family __ro_after_init = { |
cb25142c PS |
668 | .hdrsize = sizeof(struct ovs_header), |
669 | .name = OVS_PACKET_FAMILY, | |
670 | .version = OVS_PACKET_VERSION, | |
671 | .maxattr = OVS_PACKET_ATTR_MAX, | |
2ef0f1c2 JB |
672 | #ifndef HAVE_GENL_OPS_POLICY |
673 | .policy = packet_policy, | |
674 | #endif | |
cb25142c PS |
675 | .netnsok = true, |
676 | .parallel_ops = true, | |
677 | .ops = dp_packet_genl_ops, | |
678 | .n_ops = ARRAY_SIZE(dp_packet_genl_ops), | |
ba63fe26 | 679 | .module = THIS_MODULE, |
cb25142c PS |
680 | }; |
681 | ||
f1f60b85 | 682 | static void get_dp_stats(const struct datapath *dp, struct ovs_dp_stats *stats, |
4fa72a95 | 683 | struct ovs_dp_megaflow_stats *mega_stats) |
064af421 | 684 | { |
d6569377 | 685 | int i; |
f180c2e2 | 686 | |
4fa72a95 AZ |
687 | memset(mega_stats, 0, sizeof(*mega_stats)); |
688 | ||
994dc286 | 689 | stats->n_flows = ovs_flow_tbl_count(&dp->table); |
4fa72a95 | 690 | mega_stats->n_masks = ovs_flow_tbl_num_masks(&dp->table); |
064af421 | 691 | |
7257b535 | 692 | stats->n_hit = stats->n_missed = stats->n_lost = 0; |
4fa72a95 | 693 | |
d6569377 BP |
694 | for_each_possible_cpu(i) { |
695 | const struct dp_stats_percpu *percpu_stats; | |
696 | struct dp_stats_percpu local_stats; | |
821cb9fa | 697 | unsigned int start; |
44e05eca | 698 | |
d6569377 | 699 | percpu_stats = per_cpu_ptr(dp->stats_percpu, i); |
064af421 | 700 | |
d6569377 | 701 | do { |
b81deb15 | 702 | start = u64_stats_fetch_begin_irq(&percpu_stats->syncp); |
d6569377 | 703 | local_stats = *percpu_stats; |
b81deb15 | 704 | } while (u64_stats_fetch_retry_irq(&percpu_stats->syncp, start)); |
064af421 | 705 | |
d6569377 BP |
706 | stats->n_hit += local_stats.n_hit; |
707 | stats->n_missed += local_stats.n_missed; | |
708 | stats->n_lost += local_stats.n_lost; | |
4fa72a95 | 709 | mega_stats->n_mask_hit += local_stats.n_mask_hit; |
d6569377 BP |
710 | } |
711 | } | |
064af421 | 712 | |
bc619e29 JS |
713 | static bool should_fill_key(const struct sw_flow_id *sfid, uint32_t ufid_flags) |
714 | { | |
715 | return ovs_identifier_is_ufid(sfid) && | |
716 | !(ufid_flags & OVS_UFID_F_OMIT_KEY); | |
717 | } | |
718 | ||
719 | static bool should_fill_mask(uint32_t ufid_flags) | |
720 | { | |
721 | return !(ufid_flags & OVS_UFID_F_OMIT_MASK); | |
722 | } | |
723 | ||
724 | static bool should_fill_actions(uint32_t ufid_flags) | |
0afa2373 | 725 | { |
bc619e29 JS |
726 | return !(ufid_flags & OVS_UFID_F_OMIT_ACTIONS); |
727 | } | |
728 | ||
729 | static size_t ovs_flow_cmd_msg_size(const struct sw_flow_actions *acts, | |
730 | const struct sw_flow_id *sfid, | |
731 | uint32_t ufid_flags) | |
732 | { | |
733 | size_t len = NLMSG_ALIGN(sizeof(struct ovs_header)); | |
734 | ||
735 | /* OVS_FLOW_ATTR_UFID */ | |
736 | if (sfid && ovs_identifier_is_ufid(sfid)) | |
737 | len += nla_total_size(sfid->ufid_len); | |
738 | ||
739 | /* OVS_FLOW_ATTR_KEY */ | |
740 | if (!sfid || should_fill_key(sfid, ufid_flags)) | |
741 | len += nla_total_size(ovs_key_attr_size()); | |
742 | ||
743 | /* OVS_FLOW_ATTR_MASK */ | |
744 | if (should_fill_mask(ufid_flags)) | |
745 | len += nla_total_size(ovs_key_attr_size()); | |
746 | ||
747 | /* OVS_FLOW_ATTR_ACTIONS */ | |
748 | if (should_fill_actions(ufid_flags)) | |
c3bb15b3 | 749 | len += nla_total_size(acts->orig_len); |
bc619e29 JS |
750 | |
751 | return len | |
91b37647 | 752 | + nla_total_size_64bit(sizeof(struct ovs_flow_stats)) /* OVS_FLOW_ATTR_STATS */ |
0afa2373 | 753 | + nla_total_size(1) /* OVS_FLOW_ATTR_TCP_FLAGS */ |
91b37647 | 754 | + nla_total_size_64bit(8); /* OVS_FLOW_ATTR_USED */ |
0afa2373 TG |
755 | } |
756 | ||
f1948bb9 JS |
757 | /* Called with ovs_mutex or RCU read lock. */ |
758 | static int ovs_flow_cmd_fill_stats(const struct sw_flow *flow, | |
759 | struct sk_buff *skb) | |
760 | { | |
761 | struct ovs_flow_stats stats; | |
762 | __be16 tcp_flags; | |
763 | unsigned long used; | |
764 | ||
b0f3a2fe | 765 | ovs_flow_stats_get(flow, &stats, &used, &tcp_flags); |
f71db6b1 | 766 | |
b0f3a2fe | 767 | if (used && |
89be7da8 PS |
768 | nla_put_u64_64bit(skb, OVS_FLOW_ATTR_USED, ovs_flow_used_time(used), |
769 | OVS_FLOW_ATTR_PAD)) | |
f1948bb9 | 770 | return -EMSGSIZE; |
d6569377 | 771 | |
b0f3a2fe | 772 | if (stats.n_packets && |
91b37647 PS |
773 | nla_put_64bit(skb, OVS_FLOW_ATTR_STATS, |
774 | sizeof(struct ovs_flow_stats), &stats, | |
775 | OVS_FLOW_ATTR_PAD)) | |
f1948bb9 | 776 | return -EMSGSIZE; |
b0b906cc | 777 | |
b0f3a2fe PS |
778 | if ((u8)ntohs(tcp_flags) && |
779 | nla_put_u8(skb, OVS_FLOW_ATTR_TCP_FLAGS, (u8)ntohs(tcp_flags))) | |
f1948bb9 JS |
780 | return -EMSGSIZE; |
781 | ||
782 | return 0; | |
783 | } | |
784 | ||
785 | /* Called with ovs_mutex or RCU read lock. */ | |
786 | static int ovs_flow_cmd_fill_actions(const struct sw_flow *flow, | |
787 | struct sk_buff *skb, int skb_orig_len) | |
788 | { | |
789 | struct nlattr *start; | |
790 | int err; | |
d6569377 | 791 | |
df2c07f4 | 792 | /* If OVS_FLOW_ATTR_ACTIONS doesn't fit, skip dumping the actions if |
30053024 BP |
793 | * this is the first flow to be dumped into 'skb'. This is unusual for |
794 | * Netlink but individual action lists can be longer than | |
795 | * NLMSG_GOODSIZE and thus entirely undumpable if we didn't do this. | |
796 | * The userspace caller can always fetch the actions separately if it | |
797 | * really wants them. (Most userspace callers in fact don't care.) | |
798 | * | |
799 | * This can only fail for dump operations because the skb is always | |
800 | * properly sized for single flows. | |
801 | */ | |
09c33996 | 802 | start = nla_nest_start_noflag(skb, OVS_FLOW_ATTR_ACTIONS); |
f6f481ee | 803 | if (start) { |
f44ccce1 PS |
804 | const struct sw_flow_actions *sf_acts; |
805 | ||
780ec6ae | 806 | sf_acts = rcu_dereference_ovsl(flow->sf_acts); |
a097c0b2 PS |
807 | err = ovs_nla_put_actions(sf_acts->actions, |
808 | sf_acts->actions_len, skb); | |
f71db6b1 | 809 | |
0a25b039 BP |
810 | if (!err) |
811 | nla_nest_end(skb, start); | |
812 | else { | |
813 | if (skb_orig_len) | |
f1948bb9 | 814 | return err; |
0a25b039 BP |
815 | |
816 | nla_nest_cancel(skb, start); | |
817 | } | |
f1948bb9 JS |
818 | } else if (skb_orig_len) { |
819 | return -EMSGSIZE; | |
820 | } | |
821 | ||
822 | return 0; | |
823 | } | |
824 | ||
825 | /* Called with ovs_mutex or RCU read lock. */ | |
2c622e5a | 826 | static int ovs_flow_cmd_fill_info(const struct sw_flow *flow, int dp_ifindex, |
f1948bb9 | 827 | struct sk_buff *skb, u32 portid, |
bc619e29 | 828 | u32 seq, u32 flags, u8 cmd, u32 ufid_flags) |
f1948bb9 JS |
829 | { |
830 | const int skb_orig_len = skb->len; | |
831 | struct ovs_header *ovs_header; | |
832 | int err; | |
833 | ||
7d16c847 PS |
834 | ovs_header = genlmsg_put(skb, portid, seq, &dp_flow_genl_family, |
835 | flags, cmd); | |
f1948bb9 JS |
836 | if (!ovs_header) |
837 | return -EMSGSIZE; | |
7d16c847 | 838 | |
f1948bb9 JS |
839 | ovs_header->dp_ifindex = dp_ifindex; |
840 | ||
bc619e29 | 841 | err = ovs_nla_put_identifier(flow, skb); |
db7f2238 JS |
842 | if (err) |
843 | goto error; | |
844 | ||
bc619e29 JS |
845 | if (should_fill_key(&flow->id, ufid_flags)) { |
846 | err = ovs_nla_put_masked_key(flow, skb); | |
847 | if (err) | |
848 | goto error; | |
849 | } | |
850 | ||
851 | if (should_fill_mask(ufid_flags)) { | |
852 | err = ovs_nla_put_mask(flow, skb); | |
853 | if (err) | |
854 | goto error; | |
855 | } | |
f1948bb9 JS |
856 | |
857 | err = ovs_flow_cmd_fill_stats(flow, skb); | |
858 | if (err) | |
859 | goto error; | |
860 | ||
bc619e29 JS |
861 | if (should_fill_actions(ufid_flags)) { |
862 | err = ovs_flow_cmd_fill_actions(flow, skb, skb_orig_len); | |
863 | if (err) | |
864 | goto error; | |
865 | } | |
37a1300c | 866 | |
23b48dc1 TG |
867 | genlmsg_end(skb, ovs_header); |
868 | return 0; | |
d6569377 | 869 | |
37a1300c | 870 | error: |
df2c07f4 | 871 | genlmsg_cancel(skb, ovs_header); |
d6569377 | 872 | return err; |
44e05eca BP |
873 | } |
874 | ||
f71db6b1 JR |
875 | /* May not be called with RCU read lock. */ |
876 | static struct sk_buff *ovs_flow_cmd_alloc_info(const struct sw_flow_actions *acts, | |
bc619e29 | 877 | const struct sw_flow_id *sfid, |
afad3556 | 878 | struct genl_info *info, |
bc619e29 JS |
879 | bool always, |
880 | uint32_t ufid_flags) | |
44e05eca | 881 | { |
afad3556 | 882 | struct sk_buff *skb; |
bc619e29 | 883 | size_t len; |
d6569377 | 884 | |
114fce23 SG |
885 | if (!always && !ovs_must_notify(&dp_flow_genl_family, info, |
886 | GROUP_ID(&ovs_dp_flow_multicast_group))) | |
afad3556 JR |
887 | return NULL; |
888 | ||
bc619e29 | 889 | len = ovs_flow_cmd_msg_size(acts, sfid, ufid_flags); |
40c08cda | 890 | skb = genlmsg_new(len, GFP_KERNEL); |
afad3556 JR |
891 | if (!skb) |
892 | return ERR_PTR(-ENOMEM); | |
893 | ||
894 | return skb; | |
37a1300c | 895 | } |
8d5ebd83 | 896 | |
f71db6b1 | 897 | /* Called with ovs_mutex. */ |
7d16c847 | 898 | static struct sk_buff *ovs_flow_cmd_build_info(const struct sw_flow *flow, |
f71db6b1 JR |
899 | int dp_ifindex, |
900 | struct genl_info *info, u8 cmd, | |
bc619e29 | 901 | bool always, u32 ufid_flags) |
37a1300c BP |
902 | { |
903 | struct sk_buff *skb; | |
904 | int retval; | |
d6569377 | 905 | |
bc619e29 JS |
906 | skb = ovs_flow_cmd_alloc_info(ovsl_dereference(flow->sf_acts), |
907 | &flow->id, info, always, ufid_flags); | |
a6ddcc9a | 908 | if (IS_ERR_OR_NULL(skb)) |
afad3556 | 909 | return skb; |
d6569377 | 910 | |
2c622e5a | 911 | retval = ovs_flow_cmd_fill_info(flow, dp_ifindex, skb, |
f71db6b1 | 912 | info->snd_portid, info->snd_seq, 0, |
bc619e29 | 913 | cmd, ufid_flags); |
37a1300c | 914 | BUG_ON(retval < 0); |
d6569377 | 915 | return skb; |
064af421 BP |
916 | } |
917 | ||
0c9fd022 | 918 | static int ovs_flow_cmd_new(struct sk_buff *skb, struct genl_info *info) |
064af421 | 919 | { |
a94ebc39 | 920 | struct net *net = sock_net(skb->sk); |
37a1300c | 921 | struct nlattr **a = info->attrs; |
df2c07f4 | 922 | struct ovs_header *ovs_header = info->userhdr; |
bc619e29 | 923 | struct sw_flow *flow = NULL, *new_flow; |
a1c564be | 924 | struct sw_flow_mask mask; |
37a1300c | 925 | struct sk_buff *reply; |
9c52546b | 926 | struct datapath *dp; |
0c9fd022 | 927 | struct sw_flow_actions *acts; |
a1c564be | 928 | struct sw_flow_match match; |
bc619e29 | 929 | u32 ufid_flags = ovs_nla_get_ufid_flags(a[OVS_FLOW_ATTR_UFID_FLAGS]); |
bc4a05c6 | 930 | int error; |
9233cef7 | 931 | bool log = !a[OVS_FLOW_ATTR_PROBE]; |
064af421 | 932 | |
6740b721 | 933 | /* Must have key and actions. */ |
37a1300c | 934 | error = -EINVAL; |
a473df5b | 935 | if (!a[OVS_FLOW_ATTR_KEY]) { |
7d16c847 | 936 | OVS_NLERR(log, "Flow key attr not present in new flow."); |
37a1300c | 937 | goto error; |
a473df5b JG |
938 | } |
939 | if (!a[OVS_FLOW_ATTR_ACTIONS]) { | |
7d16c847 | 940 | OVS_NLERR(log, "Flow actions attr not present in new flow."); |
6740b721 | 941 | goto error; |
a473df5b | 942 | } |
a1c564be | 943 | |
6740b721 | 944 | /* Most of the time we need to allocate a new flow, do it before |
af465b67 PS |
945 | * locking. |
946 | */ | |
6740b721 JR |
947 | new_flow = ovs_flow_alloc(); |
948 | if (IS_ERR(new_flow)) { | |
949 | error = PTR_ERR(new_flow); | |
950 | goto error; | |
951 | } | |
952 | ||
953 | /* Extract key. */ | |
9b94fa6c | 954 | ovs_match_init(&match, &new_flow->key, false, &mask); |
038e34ab | 955 | error = ovs_nla_get_match(net, &match, a[OVS_FLOW_ATTR_KEY], |
9233cef7 | 956 | a[OVS_FLOW_ATTR_MASK], log); |
37a1300c | 957 | if (error) |
6740b721 | 958 | goto err_kfree_flow; |
064af421 | 959 | |
bc619e29 JS |
960 | /* Extract flow identifier. */ |
961 | error = ovs_nla_get_identifier(&new_flow->id, a[OVS_FLOW_ATTR_UFID], | |
1d334d4f | 962 | &new_flow->key, log); |
bc619e29 JS |
963 | if (error) |
964 | goto err_kfree_flow; | |
9b405f1a | 965 | |
1d334d4f | 966 | /* unmasked key is needed to match when ufid is not used. */ |
967 | if (ovs_identifier_is_key(&new_flow->id)) | |
968 | match.key = new_flow->id.unmasked_key; | |
969 | ||
970 | ovs_flow_mask_key(&new_flow->key, &new_flow->key, true, &mask); | |
971 | ||
6740b721 | 972 | /* Validate actions. */ |
a94ebc39 JS |
973 | error = ovs_nla_copy_actions(net, a[OVS_FLOW_ATTR_ACTIONS], |
974 | &new_flow->key, &acts, log); | |
0c9fd022 | 975 | if (error) { |
7d16c847 | 976 | OVS_NLERR(log, "Flow actions may not be safe on all matching packets."); |
4f67b12a | 977 | goto err_kfree_flow; |
6740b721 JR |
978 | } |
979 | ||
bc619e29 JS |
980 | reply = ovs_flow_cmd_alloc_info(acts, &new_flow->id, info, false, |
981 | ufid_flags); | |
6740b721 JR |
982 | if (IS_ERR(reply)) { |
983 | error = PTR_ERR(reply); | |
984 | goto err_kfree_acts; | |
37a1300c BP |
985 | } |
986 | ||
cd2a59e9 | 987 | ovs_lock(); |
a94ebc39 | 988 | dp = get_dp(net, ovs_header->dp_ifindex); |
6740b721 JR |
989 | if (unlikely(!dp)) { |
990 | error = -ENODEV; | |
cd2a59e9 | 991 | goto err_unlock_ovs; |
6740b721 | 992 | } |
bc619e29 | 993 | |
a1c564be | 994 | /* Check if this is a duplicate flow */ |
bc619e29 JS |
995 | if (ovs_identifier_is_ufid(&new_flow->id)) |
996 | flow = ovs_flow_tbl_lookup_ufid(&dp->table, &new_flow->id); | |
997 | if (!flow) | |
1d334d4f | 998 | flow = ovs_flow_tbl_lookup(&dp->table, &new_flow->key); |
6740b721 JR |
999 | if (likely(!flow)) { |
1000 | rcu_assign_pointer(new_flow->sf_acts, acts); | |
d6569377 | 1001 | |
d6569377 | 1002 | /* Put flow in bucket. */ |
6740b721 JR |
1003 | error = ovs_flow_tbl_insert(&dp->table, new_flow, &mask); |
1004 | if (unlikely(error)) { | |
0585f7a8 | 1005 | acts = NULL; |
6740b721 JR |
1006 | goto err_unlock_ovs; |
1007 | } | |
1008 | ||
1009 | if (unlikely(reply)) { | |
2c622e5a | 1010 | error = ovs_flow_cmd_fill_info(new_flow, |
6740b721 JR |
1011 | ovs_header->dp_ifindex, |
1012 | reply, info->snd_portid, | |
1013 | info->snd_seq, 0, | |
bc619e29 JS |
1014 | OVS_FLOW_CMD_NEW, |
1015 | ufid_flags); | |
6740b721 | 1016 | BUG_ON(error < 0); |
0585f7a8 | 1017 | } |
6740b721 | 1018 | ovs_unlock(); |
d6569377 | 1019 | } else { |
0c9fd022 JR |
1020 | struct sw_flow_actions *old_acts; |
1021 | ||
d6569377 BP |
1022 | /* Bail out if we're not allowed to modify an existing flow. |
1023 | * We accept NLM_F_CREATE in place of the intended NLM_F_EXCL | |
1024 | * because Generic Netlink treats the latter as a dump | |
1025 | * request. We also accept NLM_F_EXCL in case that bug ever | |
1026 | * gets fixed. | |
1027 | */ | |
6740b721 JR |
1028 | if (unlikely(info->nlhdr->nlmsg_flags & (NLM_F_CREATE |
1029 | | NLM_F_EXCL))) { | |
1030 | error = -EEXIST; | |
cd2a59e9 | 1031 | goto err_unlock_ovs; |
6740b721 | 1032 | } |
bc619e29 JS |
1033 | /* The flow identifier has to be the same for flow updates. |
1034 | * Look for any overlapping flow. | |
1035 | */ | |
1036 | if (unlikely(!ovs_flow_cmp(flow, &match))) { | |
1037 | if (ovs_identifier_is_key(&flow->id)) | |
1038 | flow = ovs_flow_tbl_lookup_exact(&dp->table, | |
1039 | &match); | |
1040 | else /* UFID matches but key is different */ | |
1041 | flow = NULL; | |
3440e4bc AW |
1042 | if (!flow) { |
1043 | error = -ENOENT; | |
1044 | goto err_unlock_ovs; | |
1045 | } | |
6740b721 | 1046 | } |
0c9fd022 JR |
1047 | /* Update actions. */ |
1048 | old_acts = ovsl_dereference(flow->sf_acts); | |
1049 | rcu_assign_pointer(flow->sf_acts, acts); | |
0c9fd022 | 1050 | |
6740b721 | 1051 | if (unlikely(reply)) { |
2c622e5a | 1052 | error = ovs_flow_cmd_fill_info(flow, |
6740b721 JR |
1053 | ovs_header->dp_ifindex, |
1054 | reply, info->snd_portid, | |
1055 | info->snd_seq, 0, | |
bc619e29 JS |
1056 | OVS_FLOW_CMD_NEW, |
1057 | ufid_flags); | |
6740b721 JR |
1058 | BUG_ON(error < 0); |
1059 | } | |
1060 | ovs_unlock(); | |
0c9fd022 | 1061 | |
e23775f2 | 1062 | ovs_nla_free_flow_actions_rcu(old_acts); |
6740b721 | 1063 | ovs_flow_free(new_flow, false); |
0c9fd022 | 1064 | } |
6740b721 JR |
1065 | |
1066 | if (reply) | |
cb25142c | 1067 | ovs_notify(&dp_flow_genl_family, &ovs_dp_flow_multicast_group, reply, info); |
0c9fd022 JR |
1068 | return 0; |
1069 | ||
0c9fd022 JR |
1070 | err_unlock_ovs: |
1071 | ovs_unlock(); | |
6740b721 JR |
1072 | kfree_skb(reply); |
1073 | err_kfree_acts: | |
e23775f2 | 1074 | ovs_nla_free_flow_actions(acts); |
6740b721 JR |
1075 | err_kfree_flow: |
1076 | ovs_flow_free(new_flow, false); | |
0c9fd022 JR |
1077 | error: |
1078 | return error; | |
1079 | } | |
1080 | ||
cc561abf | 1081 | /* Factor out action copy to avoid "Wframe-larger-than=1024" warning. */ |
19b6110d | 1082 | static noinline_for_stack struct sw_flow_actions *get_flow_actions(struct net *net, |
a94ebc39 | 1083 | const struct nlattr *a, |
cc561abf | 1084 | const struct sw_flow_key *key, |
9233cef7 JR |
1085 | const struct sw_flow_mask *mask, |
1086 | bool log) | |
cc561abf PS |
1087 | { |
1088 | struct sw_flow_actions *acts; | |
1089 | struct sw_flow_key masked_key; | |
1090 | int error; | |
1091 | ||
ad4adec2 | 1092 | ovs_flow_mask_key(&masked_key, key, true, mask); |
a94ebc39 | 1093 | error = ovs_nla_copy_actions(net, a, &masked_key, &acts, log); |
cc561abf | 1094 | if (error) { |
9233cef7 | 1095 | OVS_NLERR(log, |
7d16c847 | 1096 | "Actions may not be safe on all matching packets"); |
cc561abf PS |
1097 | return ERR_PTR(error); |
1098 | } | |
1099 | ||
1100 | return acts; | |
1101 | } | |
1102 | ||
850c2a4d TZ |
1103 | /* Factor out match-init and action-copy to avoid |
1104 | * "Wframe-larger-than=1024" warning. Because mask is only | |
1105 | * used to get actions, we new a function to save some | |
1106 | * stack space. | |
1107 | * | |
1108 | * If there are not key and action attrs, we return 0 | |
1109 | * directly. In the case, the caller will also not use the | |
1110 | * match as before. If there is action attr, we try to get | |
1111 | * actions and save them to *acts. Before returning from | |
1112 | * the function, we reset the match->mask pointer. Because | |
1113 | * we should not to return match object with dangling reference | |
1114 | * to mask. | |
1115 | * */ | |
19b6110d AB |
1116 | static noinline_for_stack int |
1117 | ovs_nla_init_match_and_action(struct net *net, | |
1118 | struct sw_flow_match *match, | |
1119 | struct sw_flow_key *key, | |
1120 | struct nlattr **a, | |
1121 | struct sw_flow_actions **acts, | |
1122 | bool log) | |
850c2a4d TZ |
1123 | { |
1124 | struct sw_flow_mask mask; | |
1125 | int error = 0; | |
1126 | ||
1127 | if (a[OVS_FLOW_ATTR_KEY]) { | |
1128 | ovs_match_init(match, key, true, &mask); | |
1129 | error = ovs_nla_get_match(net, match, a[OVS_FLOW_ATTR_KEY], | |
1130 | a[OVS_FLOW_ATTR_MASK], log); | |
1131 | if (error) | |
1132 | goto error; | |
1133 | } | |
1134 | ||
1135 | if (a[OVS_FLOW_ATTR_ACTIONS]) { | |
1136 | if (!a[OVS_FLOW_ATTR_KEY]) { | |
1137 | OVS_NLERR(log, | |
1138 | "Flow key attribute not present in set flow."); | |
497895ca CJ |
1139 | error = -EINVAL; |
1140 | goto error; | |
850c2a4d TZ |
1141 | } |
1142 | ||
1143 | *acts = get_flow_actions(net, a[OVS_FLOW_ATTR_ACTIONS], key, | |
1144 | &mask, log); | |
1145 | if (IS_ERR(*acts)) { | |
1146 | error = PTR_ERR(*acts); | |
1147 | goto error; | |
1148 | } | |
1149 | } | |
1150 | ||
1151 | /* On success, error is 0. */ | |
1152 | error: | |
1153 | match->mask = NULL; | |
1154 | return error; | |
1155 | } | |
1156 | ||
0c9fd022 JR |
1157 | static int ovs_flow_cmd_set(struct sk_buff *skb, struct genl_info *info) |
1158 | { | |
a94ebc39 | 1159 | struct net *net = sock_net(skb->sk); |
0c9fd022 JR |
1160 | struct nlattr **a = info->attrs; |
1161 | struct ovs_header *ovs_header = info->userhdr; | |
1d2a1b5f | 1162 | struct sw_flow_key key; |
0c9fd022 | 1163 | struct sw_flow *flow; |
0c9fd022 JR |
1164 | struct sk_buff *reply = NULL; |
1165 | struct datapath *dp; | |
6740b721 | 1166 | struct sw_flow_actions *old_acts = NULL, *acts = NULL; |
0c9fd022 | 1167 | struct sw_flow_match match; |
bc619e29 JS |
1168 | struct sw_flow_id sfid; |
1169 | u32 ufid_flags = ovs_nla_get_ufid_flags(a[OVS_FLOW_ATTR_UFID_FLAGS]); | |
b24baa1a | 1170 | int error = 0; |
9233cef7 | 1171 | bool log = !a[OVS_FLOW_ATTR_PROBE]; |
bc619e29 | 1172 | bool ufid_present; |
0c9fd022 | 1173 | |
bc619e29 | 1174 | ufid_present = ovs_nla_get_ufid(&sfid, a[OVS_FLOW_ATTR_UFID], log); |
850c2a4d | 1175 | if (!a[OVS_FLOW_ATTR_KEY] && !ufid_present) { |
b24baa1a PS |
1176 | OVS_NLERR(log, |
1177 | "Flow set message rejected, Key attribute missing."); | |
850c2a4d | 1178 | return -EINVAL; |
b24baa1a | 1179 | } |
850c2a4d TZ |
1180 | |
1181 | error = ovs_nla_init_match_and_action(net, &match, &key, a, | |
1182 | &acts, log); | |
0c9fd022 JR |
1183 | if (error) |
1184 | goto error; | |
d6569377 | 1185 | |
850c2a4d | 1186 | if (acts) { |
ff27161e | 1187 | /* Can allocate before locking if have acts. */ |
bc619e29 JS |
1188 | reply = ovs_flow_cmd_alloc_info(acts, &sfid, info, false, |
1189 | ufid_flags); | |
6740b721 JR |
1190 | if (IS_ERR(reply)) { |
1191 | error = PTR_ERR(reply); | |
1192 | goto err_kfree_acts; | |
90b8c2f7 | 1193 | } |
0c9fd022 JR |
1194 | } |
1195 | ||
1196 | ovs_lock(); | |
a94ebc39 | 1197 | dp = get_dp(net, ovs_header->dp_ifindex); |
6740b721 JR |
1198 | if (unlikely(!dp)) { |
1199 | error = -ENODEV; | |
0c9fd022 | 1200 | goto err_unlock_ovs; |
6740b721 | 1201 | } |
0c9fd022 | 1202 | /* Check that the flow exists. */ |
bc619e29 JS |
1203 | if (ufid_present) |
1204 | flow = ovs_flow_tbl_lookup_ufid(&dp->table, &sfid); | |
1205 | else | |
1206 | flow = ovs_flow_tbl_lookup_exact(&dp->table, &match); | |
6740b721 JR |
1207 | if (unlikely(!flow)) { |
1208 | error = -ENOENT; | |
0c9fd022 | 1209 | goto err_unlock_ovs; |
6740b721 | 1210 | } |
3440e4bc | 1211 | |
0c9fd022 | 1212 | /* Update actions, if present. */ |
6740b721 | 1213 | if (likely(acts)) { |
0c9fd022 JR |
1214 | old_acts = ovsl_dereference(flow->sf_acts); |
1215 | rcu_assign_pointer(flow->sf_acts, acts); | |
6740b721 JR |
1216 | |
1217 | if (unlikely(reply)) { | |
2c622e5a | 1218 | error = ovs_flow_cmd_fill_info(flow, |
6740b721 JR |
1219 | ovs_header->dp_ifindex, |
1220 | reply, info->snd_portid, | |
1221 | info->snd_seq, 0, | |
229486c2 | 1222 | OVS_FLOW_CMD_SET, |
bc619e29 | 1223 | ufid_flags); |
6740b721 JR |
1224 | BUG_ON(error < 0); |
1225 | } | |
1226 | } else { | |
1227 | /* Could not alloc without acts before locking. */ | |
7d16c847 | 1228 | reply = ovs_flow_cmd_build_info(flow, ovs_header->dp_ifindex, |
229486c2 | 1229 | info, OVS_FLOW_CMD_SET, false, |
bc619e29 JS |
1230 | ufid_flags); |
1231 | ||
6740b721 JR |
1232 | if (unlikely(IS_ERR(reply))) { |
1233 | error = PTR_ERR(reply); | |
1234 | goto err_unlock_ovs; | |
1235 | } | |
9c52546b | 1236 | } |
0c9fd022 | 1237 | |
0c9fd022 JR |
1238 | /* Clear stats. */ |
1239 | if (a[OVS_FLOW_ATTR_CLEAR]) | |
1240 | ovs_flow_stats_clear(flow); | |
cd2a59e9 | 1241 | ovs_unlock(); |
37a1300c | 1242 | |
6740b721 | 1243 | if (reply) |
cb25142c | 1244 | ovs_notify(&dp_flow_genl_family, &ovs_dp_flow_multicast_group, reply, info); |
6740b721 | 1245 | if (old_acts) |
e23775f2 | 1246 | ovs_nla_free_flow_actions_rcu(old_acts); |
7d16c847 | 1247 | |
d6569377 | 1248 | return 0; |
704a1e09 | 1249 | |
cd2a59e9 PS |
1250 | err_unlock_ovs: |
1251 | ovs_unlock(); | |
6740b721 JR |
1252 | kfree_skb(reply); |
1253 | err_kfree_acts: | |
e23775f2 | 1254 | ovs_nla_free_flow_actions(acts); |
37a1300c | 1255 | error: |
9c52546b | 1256 | return error; |
704a1e09 BP |
1257 | } |
1258 | ||
df2c07f4 | 1259 | static int ovs_flow_cmd_get(struct sk_buff *skb, struct genl_info *info) |
704a1e09 | 1260 | { |
37a1300c | 1261 | struct nlattr **a = info->attrs; |
df2c07f4 | 1262 | struct ovs_header *ovs_header = info->userhdr; |
038e34ab | 1263 | struct net *net = sock_net(skb->sk); |
37a1300c | 1264 | struct sw_flow_key key; |
37a1300c | 1265 | struct sk_buff *reply; |
704a1e09 | 1266 | struct sw_flow *flow; |
9c52546b | 1267 | struct datapath *dp; |
a1c564be | 1268 | struct sw_flow_match match; |
bc619e29 JS |
1269 | struct sw_flow_id ufid; |
1270 | u32 ufid_flags = ovs_nla_get_ufid_flags(a[OVS_FLOW_ATTR_UFID_FLAGS]); | |
1271 | int err = 0; | |
9233cef7 | 1272 | bool log = !a[OVS_FLOW_ATTR_PROBE]; |
bc619e29 | 1273 | bool ufid_present; |
704a1e09 | 1274 | |
bc619e29 JS |
1275 | ufid_present = ovs_nla_get_ufid(&ufid, a[OVS_FLOW_ATTR_UFID], log); |
1276 | if (a[OVS_FLOW_ATTR_KEY]) { | |
9b94fa6c | 1277 | ovs_match_init(&match, &key, true, NULL); |
038e34ab | 1278 | err = ovs_nla_get_match(net, &match, a[OVS_FLOW_ATTR_KEY], NULL, |
bc619e29 JS |
1279 | log); |
1280 | } else if (!ufid_present) { | |
9233cef7 JR |
1281 | OVS_NLERR(log, |
1282 | "Flow get message rejected, Key attribute missing."); | |
bc619e29 | 1283 | err = -EINVAL; |
1b936472 | 1284 | } |
37a1300c BP |
1285 | if (err) |
1286 | return err; | |
704a1e09 | 1287 | |
cd2a59e9 | 1288 | ovs_lock(); |
2a4999f3 | 1289 | dp = get_dp(sock_net(skb->sk), ovs_header->dp_ifindex); |
cd2a59e9 PS |
1290 | if (!dp) { |
1291 | err = -ENODEV; | |
1292 | goto unlock; | |
1293 | } | |
704a1e09 | 1294 | |
bc619e29 JS |
1295 | if (ufid_present) |
1296 | flow = ovs_flow_tbl_lookup_ufid(&dp->table, &ufid); | |
1297 | else | |
1298 | flow = ovs_flow_tbl_lookup_exact(&dp->table, &match); | |
3440e4bc | 1299 | if (!flow) { |
cd2a59e9 PS |
1300 | err = -ENOENT; |
1301 | goto unlock; | |
1302 | } | |
d6569377 | 1303 | |
7d16c847 | 1304 | reply = ovs_flow_cmd_build_info(flow, ovs_header->dp_ifindex, info, |
229486c2 | 1305 | OVS_FLOW_CMD_GET, true, ufid_flags); |
cd2a59e9 PS |
1306 | if (IS_ERR(reply)) { |
1307 | err = PTR_ERR(reply); | |
1308 | goto unlock; | |
1309 | } | |
36956a7d | 1310 | |
cd2a59e9 | 1311 | ovs_unlock(); |
37a1300c | 1312 | return genlmsg_reply(reply, info); |
cd2a59e9 PS |
1313 | unlock: |
1314 | ovs_unlock(); | |
1315 | return err; | |
d6569377 | 1316 | } |
9c52546b | 1317 | |
df2c07f4 | 1318 | static int ovs_flow_cmd_del(struct sk_buff *skb, struct genl_info *info) |
d6569377 | 1319 | { |
37a1300c | 1320 | struct nlattr **a = info->attrs; |
df2c07f4 | 1321 | struct ovs_header *ovs_header = info->userhdr; |
038e34ab | 1322 | struct net *net = sock_net(skb->sk); |
37a1300c | 1323 | struct sw_flow_key key; |
37a1300c | 1324 | struct sk_buff *reply; |
bc619e29 | 1325 | struct sw_flow *flow = NULL; |
d6569377 | 1326 | struct datapath *dp; |
a1c564be | 1327 | struct sw_flow_match match; |
bc619e29 JS |
1328 | struct sw_flow_id ufid; |
1329 | u32 ufid_flags = ovs_nla_get_ufid_flags(a[OVS_FLOW_ATTR_UFID_FLAGS]); | |
d6569377 | 1330 | int err; |
9233cef7 | 1331 | bool log = !a[OVS_FLOW_ATTR_PROBE]; |
bc619e29 | 1332 | bool ufid_present; |
36956a7d | 1333 | |
bc619e29 JS |
1334 | ufid_present = ovs_nla_get_ufid(&ufid, a[OVS_FLOW_ATTR_UFID], log); |
1335 | if (a[OVS_FLOW_ATTR_KEY]) { | |
9b94fa6c | 1336 | ovs_match_init(&match, &key, true, NULL); |
038e34ab JS |
1337 | err = ovs_nla_get_match(net, &match, a[OVS_FLOW_ATTR_KEY], |
1338 | NULL, log); | |
cde7f3ba JR |
1339 | if (unlikely(err)) |
1340 | return err; | |
1341 | } | |
1342 | ||
cd2a59e9 | 1343 | ovs_lock(); |
2a4999f3 | 1344 | dp = get_dp(sock_net(skb->sk), ovs_header->dp_ifindex); |
cde7f3ba | 1345 | if (unlikely(!dp)) { |
cd2a59e9 PS |
1346 | err = -ENODEV; |
1347 | goto unlock; | |
1348 | } | |
7d16c847 | 1349 | |
bc619e29 | 1350 | if (unlikely(!a[OVS_FLOW_ATTR_KEY] && !ufid_present)) { |
994dc286 | 1351 | err = ovs_flow_tbl_flush(&dp->table); |
cd2a59e9 PS |
1352 | goto unlock; |
1353 | } | |
7d16c847 | 1354 | |
bc619e29 JS |
1355 | if (ufid_present) |
1356 | flow = ovs_flow_tbl_lookup_ufid(&dp->table, &ufid); | |
1357 | else | |
1358 | flow = ovs_flow_tbl_lookup_exact(&dp->table, &match); | |
3440e4bc | 1359 | if (unlikely(!flow)) { |
cd2a59e9 PS |
1360 | err = -ENOENT; |
1361 | goto unlock; | |
1362 | } | |
d6569377 | 1363 | |
994dc286 | 1364 | ovs_flow_tbl_remove(&dp->table, flow); |
cde7f3ba | 1365 | ovs_unlock(); |
37a1300c | 1366 | |
46051cf8 | 1367 | reply = ovs_flow_cmd_alloc_info(rcu_dereference_raw(flow->sf_acts), |
bc619e29 | 1368 | &flow->id, info, false, ufid_flags); |
cde7f3ba JR |
1369 | |
1370 | if (likely(reply)) { | |
1371 | if (likely(!IS_ERR(reply))) { | |
7d16c847 PS |
1372 | rcu_read_lock(); /*To keep RCU checker happy. */ |
1373 | err = ovs_flow_cmd_fill_info(flow, ovs_header->dp_ifindex, | |
cde7f3ba JR |
1374 | reply, info->snd_portid, |
1375 | info->snd_seq, 0, | |
bc619e29 JS |
1376 | OVS_FLOW_CMD_DEL, |
1377 | ufid_flags); | |
cde7f3ba JR |
1378 | rcu_read_unlock(); |
1379 | BUG_ON(err < 0); | |
cb25142c | 1380 | ovs_notify(&dp_flow_genl_family, &ovs_dp_flow_multicast_group, reply, info); |
cde7f3ba | 1381 | } else { |
cb25142c PS |
1382 | genl_set_err(&dp_flow_genl_family, sock_net(skb->sk), 0, |
1383 | GROUP_ID(&ovs_dp_flow_multicast_group), PTR_ERR(reply)); | |
1384 | ||
cde7f3ba | 1385 | } |
afad3556 | 1386 | } |
37a1300c | 1387 | |
a1c564be | 1388 | ovs_flow_free(flow, true); |
37a1300c | 1389 | return 0; |
cd2a59e9 PS |
1390 | unlock: |
1391 | ovs_unlock(); | |
1392 | return err; | |
37a1300c BP |
1393 | } |
1394 | ||
df2c07f4 | 1395 | static int ovs_flow_cmd_dump(struct sk_buff *skb, struct netlink_callback *cb) |
37a1300c | 1396 | { |
bc619e29 | 1397 | struct nlattr *a[__OVS_FLOW_ATTR_MAX]; |
df2c07f4 | 1398 | struct ovs_header *ovs_header = genlmsg_data(nlmsg_data(cb->nlh)); |
994dc286 | 1399 | struct table_instance *ti; |
37a1300c | 1400 | struct datapath *dp; |
bc619e29 JS |
1401 | u32 ufid_flags; |
1402 | int err; | |
1403 | ||
6db0f72d JB |
1404 | err = genlmsg_parse_deprecated(cb->nlh, &dp_flow_genl_family, a, |
1405 | OVS_FLOW_ATTR_MAX, flow_policy, NULL); | |
bc619e29 JS |
1406 | if (err) |
1407 | return err; | |
1408 | ufid_flags = ovs_nla_get_ufid_flags(a[OVS_FLOW_ATTR_UFID_FLAGS]); | |
37a1300c | 1409 | |
f44ccce1 | 1410 | rcu_read_lock(); |
01ac0970 | 1411 | dp = get_dp_rcu(sock_net(skb->sk), ovs_header->dp_ifindex); |
cd2a59e9 | 1412 | if (!dp) { |
f44ccce1 | 1413 | rcu_read_unlock(); |
37a1300c | 1414 | return -ENODEV; |
cd2a59e9 | 1415 | } |
37a1300c | 1416 | |
994dc286 | 1417 | ti = rcu_dereference(dp->table.ti); |
37a1300c | 1418 | for (;;) { |
37a1300c BP |
1419 | struct sw_flow *flow; |
1420 | u32 bucket, obj; | |
1421 | ||
1422 | bucket = cb->args[0]; | |
1423 | obj = cb->args[1]; | |
994dc286 | 1424 | flow = ovs_flow_tbl_dump_next(ti, &bucket, &obj); |
3544358a | 1425 | if (!flow) |
37a1300c BP |
1426 | break; |
1427 | ||
2c622e5a | 1428 | if (ovs_flow_cmd_fill_info(flow, ovs_header->dp_ifindex, skb, |
28aea917 | 1429 | NETLINK_CB(cb->skb).portid, |
37a1300c | 1430 | cb->nlh->nlmsg_seq, NLM_F_MULTI, |
229486c2 | 1431 | OVS_FLOW_CMD_GET, ufid_flags) < 0) |
37a1300c BP |
1432 | break; |
1433 | ||
1434 | cb->args[0] = bucket; | |
1435 | cb->args[1] = obj; | |
1436 | } | |
f44ccce1 | 1437 | rcu_read_unlock(); |
37a1300c | 1438 | return skb->len; |
704a1e09 BP |
1439 | } |
1440 | ||
cb25142c PS |
1441 | static const struct nla_policy flow_policy[OVS_FLOW_ATTR_MAX + 1] = { |
1442 | [OVS_FLOW_ATTR_KEY] = { .type = NLA_NESTED }, | |
9233cef7 | 1443 | [OVS_FLOW_ATTR_MASK] = { .type = NLA_NESTED }, |
cb25142c PS |
1444 | [OVS_FLOW_ATTR_ACTIONS] = { .type = NLA_NESTED }, |
1445 | [OVS_FLOW_ATTR_CLEAR] = { .type = NLA_FLAG }, | |
9233cef7 | 1446 | [OVS_FLOW_ATTR_PROBE] = { .type = NLA_FLAG }, |
bc619e29 JS |
1447 | [OVS_FLOW_ATTR_UFID] = { .type = NLA_UNSPEC, .len = 1 }, |
1448 | [OVS_FLOW_ATTR_UFID_FLAGS] = { .type = NLA_U32 }, | |
cb25142c PS |
1449 | }; |
1450 | ||
e515e66a | 1451 | static const struct genl_ops dp_flow_genl_ops[] = { |
df2c07f4 | 1452 | { .cmd = OVS_FLOW_CMD_NEW, |
f1e9590e YHW |
1453 | #ifdef HAVE_GENL_VALIDATE_FLAGS |
1454 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, | |
1455 | #endif | |
a6a8674d | 1456 | .flags = GENL_UNS_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */ |
2ef0f1c2 | 1457 | #ifdef HAVE_GENL_OPS_POLICY |
37a1300c | 1458 | .policy = flow_policy, |
2ef0f1c2 | 1459 | #endif |
0c9fd022 | 1460 | .doit = ovs_flow_cmd_new |
37a1300c | 1461 | }, |
df2c07f4 | 1462 | { .cmd = OVS_FLOW_CMD_DEL, |
f1e9590e YHW |
1463 | #ifdef HAVE_GENL_VALIDATE_FLAGS |
1464 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, | |
1465 | #endif | |
a6a8674d | 1466 | .flags = GENL_UNS_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */ |
2ef0f1c2 | 1467 | #ifdef HAVE_GENL_OPS_POLICY |
37a1300c | 1468 | .policy = flow_policy, |
2ef0f1c2 | 1469 | #endif |
df2c07f4 | 1470 | .doit = ovs_flow_cmd_del |
37a1300c | 1471 | }, |
df2c07f4 | 1472 | { .cmd = OVS_FLOW_CMD_GET, |
f1e9590e YHW |
1473 | #ifdef HAVE_GENL_VALIDATE_FLAGS |
1474 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, | |
1475 | #endif | |
37a1300c | 1476 | .flags = 0, /* OK for unprivileged users. */ |
2ef0f1c2 | 1477 | #ifdef HAVE_GENL_OPS_POLICY |
37a1300c | 1478 | .policy = flow_policy, |
2ef0f1c2 | 1479 | #endif |
df2c07f4 JP |
1480 | .doit = ovs_flow_cmd_get, |
1481 | .dumpit = ovs_flow_cmd_dump | |
37a1300c | 1482 | }, |
df2c07f4 | 1483 | { .cmd = OVS_FLOW_CMD_SET, |
f1e9590e YHW |
1484 | #ifdef HAVE_GENL_VALIDATE_FLAGS |
1485 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, | |
1486 | #endif | |
a6a8674d | 1487 | .flags = GENL_UNS_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */ |
2ef0f1c2 | 1488 | #ifdef HAVE_GENL_OPS_POLICY |
37a1300c | 1489 | .policy = flow_policy, |
2ef0f1c2 | 1490 | #endif |
0c9fd022 | 1491 | .doit = ovs_flow_cmd_set, |
37a1300c BP |
1492 | }, |
1493 | }; | |
1494 | ||
ba63fe26 | 1495 | static struct genl_family dp_flow_genl_family __ro_after_init = { |
df2c07f4 | 1496 | .hdrsize = sizeof(struct ovs_header), |
cb25142c PS |
1497 | .name = OVS_FLOW_FAMILY, |
1498 | .version = OVS_FLOW_VERSION, | |
1499 | .maxattr = OVS_FLOW_ATTR_MAX, | |
2ef0f1c2 JB |
1500 | #ifndef HAVE_GENL_OPS_POLICY |
1501 | .policy = flow_policy, | |
1502 | #endif | |
b3dcb73c | 1503 | .netnsok = true, |
cb25142c PS |
1504 | .parallel_ops = true, |
1505 | .ops = dp_flow_genl_ops, | |
1506 | .n_ops = ARRAY_SIZE(dp_flow_genl_ops), | |
1507 | .mcgrps = &ovs_dp_flow_multicast_group, | |
1508 | .n_mcgrps = 1, | |
ba63fe26 | 1509 | .module = THIS_MODULE, |
aaff4b55 BP |
1510 | }; |
1511 | ||
0afa2373 TG |
1512 | static size_t ovs_dp_cmd_msg_size(void) |
1513 | { | |
1514 | size_t msgsize = NLMSG_ALIGN(sizeof(struct ovs_header)); | |
1515 | ||
1516 | msgsize += nla_total_size(IFNAMSIZ); | |
91b37647 PS |
1517 | msgsize += nla_total_size_64bit(sizeof(struct ovs_dp_stats)); |
1518 | msgsize += nla_total_size_64bit(sizeof(struct ovs_dp_megaflow_stats)); | |
300af20a | 1519 | msgsize += nla_total_size(sizeof(u32)); /* OVS_DP_ATTR_USER_FEATURES */ |
0afa2373 TG |
1520 | |
1521 | return msgsize; | |
1522 | } | |
1523 | ||
d637497c | 1524 | /* Called with ovs_mutex. */ |
df2c07f4 | 1525 | static int ovs_dp_cmd_fill_info(struct datapath *dp, struct sk_buff *skb, |
28aea917 | 1526 | u32 portid, u32 seq, u32 flags, u8 cmd) |
064af421 | 1527 | { |
df2c07f4 | 1528 | struct ovs_header *ovs_header; |
e926dfe3 | 1529 | struct ovs_dp_stats dp_stats; |
4fa72a95 | 1530 | struct ovs_dp_megaflow_stats dp_megaflow_stats; |
064af421 BP |
1531 | int err; |
1532 | ||
28aea917 | 1533 | ovs_header = genlmsg_put(skb, portid, seq, &dp_datapath_genl_family, |
aaff4b55 | 1534 | flags, cmd); |
df2c07f4 | 1535 | if (!ovs_header) |
aaff4b55 | 1536 | goto error; |
064af421 | 1537 | |
b063d9f0 | 1538 | ovs_header->dp_ifindex = get_dpifindex(dp); |
064af421 | 1539 | |
850b6b3b | 1540 | err = nla_put_string(skb, OVS_DP_ATTR_NAME, ovs_dp_name(dp)); |
064af421 | 1541 | if (err) |
d6569377 | 1542 | goto nla_put_failure; |
064af421 | 1543 | |
4fa72a95 | 1544 | get_dp_stats(dp, &dp_stats, &dp_megaflow_stats); |
91b37647 PS |
1545 | if (nla_put_64bit(skb, OVS_DP_ATTR_STATS, sizeof(struct ovs_dp_stats), |
1546 | &dp_stats, OVS_DP_ATTR_PAD)) | |
4fa72a95 AZ |
1547 | goto nla_put_failure; |
1548 | ||
91b37647 PS |
1549 | if (nla_put_64bit(skb, OVS_DP_ATTR_MEGAFLOW_STATS, |
1550 | sizeof(struct ovs_dp_megaflow_stats), | |
1551 | &dp_megaflow_stats, OVS_DP_ATTR_PAD)) | |
c3cc8c03 | 1552 | goto nla_put_failure; |
d6569377 | 1553 | |
c58cc9a4 TG |
1554 | if (nla_put_u32(skb, OVS_DP_ATTR_USER_FEATURES, dp->user_features)) |
1555 | goto nla_put_failure; | |
1556 | ||
23b48dc1 TG |
1557 | genlmsg_end(skb, ovs_header); |
1558 | return 0; | |
d6569377 BP |
1559 | |
1560 | nla_put_failure: | |
df2c07f4 | 1561 | genlmsg_cancel(skb, ovs_header); |
aaff4b55 BP |
1562 | error: |
1563 | return -EMSGSIZE; | |
d6569377 BP |
1564 | } |
1565 | ||
40c08cda | 1566 | static struct sk_buff *ovs_dp_cmd_alloc_info(void) |
d6569377 | 1567 | { |
40c08cda | 1568 | return genlmsg_new(ovs_dp_cmd_msg_size(), GFP_KERNEL); |
aaff4b55 | 1569 | } |
9dca7bd5 | 1570 | |
aa917006 | 1571 | /* Called with rcu_read_lock or ovs_mutex. */ |
2a4999f3 | 1572 | static struct datapath *lookup_datapath(struct net *net, |
f1f60b85 | 1573 | const struct ovs_header *ovs_header, |
6455100f | 1574 | struct nlattr *a[OVS_DP_ATTR_MAX + 1]) |
d6569377 | 1575 | { |
254f2dc8 BP |
1576 | struct datapath *dp; |
1577 | ||
df2c07f4 | 1578 | if (!a[OVS_DP_ATTR_NAME]) |
2a4999f3 | 1579 | dp = get_dp(net, ovs_header->dp_ifindex); |
254f2dc8 | 1580 | else { |
d6569377 | 1581 | struct vport *vport; |
d6569377 | 1582 | |
2a4999f3 | 1583 | vport = ovs_vport_locate(net, nla_data(a[OVS_DP_ATTR_NAME])); |
df2c07f4 | 1584 | dp = vport && vport->port_no == OVSP_LOCAL ? vport->dp : NULL; |
d6569377 | 1585 | } |
254f2dc8 | 1586 | return dp ? dp : ERR_PTR(-ENODEV); |
d6569377 BP |
1587 | } |
1588 | ||
94358dcf TG |
1589 | static void ovs_dp_reset_user_features(struct sk_buff *skb, struct genl_info *info) |
1590 | { | |
1591 | struct datapath *dp; | |
1592 | ||
1593 | dp = lookup_datapath(sock_net(skb->sk), info->userhdr, info->attrs); | |
09350a3d | 1594 | if (IS_ERR(dp)) |
94358dcf TG |
1595 | return; |
1596 | ||
1597 | WARN(dp->user_features, "Dropping previously announced user features\n"); | |
1598 | dp->user_features = 0; | |
1599 | } | |
1600 | ||
f1f60b85 | 1601 | static void ovs_dp_change(struct datapath *dp, struct nlattr *a[]) |
c58cc9a4 TG |
1602 | { |
1603 | if (a[OVS_DP_ATTR_USER_FEATURES]) | |
1604 | dp->user_features = nla_get_u32(a[OVS_DP_ATTR_USER_FEATURES]); | |
1605 | } | |
1606 | ||
df2c07f4 | 1607 | static int ovs_dp_cmd_new(struct sk_buff *skb, struct genl_info *info) |
d6569377 | 1608 | { |
aaff4b55 | 1609 | struct nlattr **a = info->attrs; |
d6569377 | 1610 | struct vport_parms parms; |
aaff4b55 | 1611 | struct sk_buff *reply; |
d6569377 BP |
1612 | struct datapath *dp; |
1613 | struct vport *vport; | |
2a4999f3 | 1614 | struct ovs_net *ovs_net; |
95b1d73a | 1615 | int err, i; |
d6569377 | 1616 | |
d6569377 | 1617 | err = -EINVAL; |
ea36840f | 1618 | if (!a[OVS_DP_ATTR_NAME] || !a[OVS_DP_ATTR_UPCALL_PID]) |
aaff4b55 BP |
1619 | goto err; |
1620 | ||
40c08cda | 1621 | reply = ovs_dp_cmd_alloc_info(); |
d81eef1b JR |
1622 | if (!reply) |
1623 | return -ENOMEM; | |
d6569377 | 1624 | |
d6569377 BP |
1625 | err = -ENOMEM; |
1626 | dp = kzalloc(sizeof(*dp), GFP_KERNEL); | |
1627 | if (dp == NULL) | |
d81eef1b | 1628 | goto err_free_reply; |
2a4999f3 | 1629 | |
c0cddcec | 1630 | ovs_dp_set_net(dp, sock_net(skb->sk)); |
0ceaa66c | 1631 | |
d6569377 | 1632 | /* Allocate table. */ |
994dc286 PS |
1633 | err = ovs_flow_tbl_init(&dp->table); |
1634 | if (err) | |
d6569377 BP |
1635 | goto err_free_dp; |
1636 | ||
08fb1bbd | 1637 | dp->stats_percpu = netdev_alloc_pcpu_stats(struct dp_stats_percpu); |
99769a40 JG |
1638 | if (!dp->stats_percpu) { |
1639 | err = -ENOMEM; | |
1640 | goto err_destroy_table; | |
1641 | } | |
1642 | ||
8401bb6a KC |
1643 | dp->ports = kmalloc_array(DP_VPORT_HASH_BUCKETS, |
1644 | sizeof(struct hlist_head), | |
1645 | GFP_KERNEL); | |
95b1d73a PS |
1646 | if (!dp->ports) { |
1647 | err = -ENOMEM; | |
1648 | goto err_destroy_percpu; | |
1649 | } | |
1650 | ||
1651 | for (i = 0; i < DP_VPORT_HASH_BUCKETS; i++) | |
1652 | INIT_HLIST_HEAD(&dp->ports[i]); | |
1653 | ||
1cb57039 AZ |
1654 | err = ovs_meters_init(dp); |
1655 | if (err) | |
1656 | goto err_destroy_ports_array; | |
1657 | ||
d6569377 | 1658 | /* Set up our datapath device. */ |
df2c07f4 JP |
1659 | parms.name = nla_data(a[OVS_DP_ATTR_NAME]); |
1660 | parms.type = OVS_VPORT_TYPE_INTERNAL; | |
d6569377 BP |
1661 | parms.options = NULL; |
1662 | parms.dp = dp; | |
df2c07f4 | 1663 | parms.port_no = OVSP_LOCAL; |
beb1c69a | 1664 | parms.upcall_portids = a[OVS_DP_ATTR_UPCALL_PID]; |
b063d9f0 | 1665 | |
c58cc9a4 TG |
1666 | ovs_dp_change(dp, a); |
1667 | ||
d81eef1b JR |
1668 | /* So far only local changes have been made, now need the lock. */ |
1669 | ovs_lock(); | |
1670 | ||
d6569377 BP |
1671 | vport = new_vport(&parms); |
1672 | if (IS_ERR(vport)) { | |
1673 | err = PTR_ERR(vport); | |
1674 | if (err == -EBUSY) | |
1675 | err = -EEXIST; | |
1676 | ||
94358dcf TG |
1677 | if (err == -EEXIST) { |
1678 | /* An outdated user space instance that does not understand | |
1679 | * the concept of user_features has attempted to create a new | |
1680 | * datapath and is likely to reuse it. Drop all user features. | |
1681 | */ | |
1682 | if (info->genlhdr->version < OVS_DP_VER_FEATURES) | |
1683 | ovs_dp_reset_user_features(skb, info); | |
1684 | } | |
1685 | ||
1cb57039 | 1686 | goto err_destroy_meters; |
d6569377 | 1687 | } |
d6569377 | 1688 | |
d81eef1b JR |
1689 | err = ovs_dp_cmd_fill_info(dp, reply, info->snd_portid, |
1690 | info->snd_seq, 0, OVS_DP_CMD_NEW); | |
1691 | BUG_ON(err < 0); | |
aaff4b55 | 1692 | |
2a4999f3 | 1693 | ovs_net = net_generic(ovs_dp_get_net(dp), ovs_net_id); |
fb93e9aa | 1694 | list_add_tail_rcu(&dp->list_node, &ovs_net->dps); |
a0fb56c1 | 1695 | |
cd2a59e9 | 1696 | ovs_unlock(); |
d6569377 | 1697 | |
cb25142c | 1698 | ovs_notify(&dp_datapath_genl_family, &ovs_dp_datapath_multicast_group, reply, info); |
d6569377 BP |
1699 | return 0; |
1700 | ||
1cb57039 | 1701 | err_destroy_meters: |
d81eef1b | 1702 | ovs_unlock(); |
1cb57039 AZ |
1703 | ovs_meters_exit(dp); |
1704 | err_destroy_ports_array: | |
95b1d73a | 1705 | kfree(dp->ports); |
99769a40 JG |
1706 | err_destroy_percpu: |
1707 | free_percpu(dp->stats_percpu); | |
d6569377 | 1708 | err_destroy_table: |
e379e4d1 | 1709 | ovs_flow_tbl_destroy(&dp->table); |
d6569377 | 1710 | err_free_dp: |
d6569377 | 1711 | kfree(dp); |
d81eef1b JR |
1712 | err_free_reply: |
1713 | kfree_skb(reply); | |
d6569377 | 1714 | err: |
064af421 BP |
1715 | return err; |
1716 | } | |
1717 | ||
cd2a59e9 | 1718 | /* Called with ovs_mutex. */ |
2a4999f3 | 1719 | static void __dp_destroy(struct datapath *dp) |
44e05eca | 1720 | { |
95b1d73a | 1721 | int i; |
44e05eca | 1722 | |
95b1d73a PS |
1723 | for (i = 0; i < DP_VPORT_HASH_BUCKETS; i++) { |
1724 | struct vport *vport; | |
f8dfbcb7 | 1725 | struct hlist_node *n; |
95b1d73a | 1726 | |
f8dfbcb7 | 1727 | hlist_for_each_entry_safe(vport, n, &dp->ports[i], dp_hash_node) |
95b1d73a PS |
1728 | if (vport->port_no != OVSP_LOCAL) |
1729 | ovs_dp_detach_port(vport); | |
1730 | } | |
ed099e92 | 1731 | |
fb93e9aa | 1732 | list_del_rcu(&dp->list_node); |
ed099e92 | 1733 | |
cd2a59e9 | 1734 | /* OVSP_LOCAL is datapath internal port. We need to make sure that |
d103f479 AZ |
1735 | * all ports in datapath are destroyed first before freeing datapath. |
1736 | */ | |
cd2a59e9 | 1737 | ovs_dp_detach_port(ovs_vport_ovsl(dp, OVSP_LOCAL)); |
99620d2c | 1738 | |
d103f479 | 1739 | /* RCU destroy the flow table */ |
ed099e92 | 1740 | call_rcu(&dp->rcu, destroy_dp_rcu); |
2a4999f3 PS |
1741 | } |
1742 | ||
1743 | static int ovs_dp_cmd_del(struct sk_buff *skb, struct genl_info *info) | |
1744 | { | |
1745 | struct sk_buff *reply; | |
1746 | struct datapath *dp; | |
1747 | int err; | |
1748 | ||
40c08cda | 1749 | reply = ovs_dp_cmd_alloc_info(); |
d81eef1b JR |
1750 | if (!reply) |
1751 | return -ENOMEM; | |
1752 | ||
cd2a59e9 | 1753 | ovs_lock(); |
2a4999f3 PS |
1754 | dp = lookup_datapath(sock_net(skb->sk), info->userhdr, info->attrs); |
1755 | err = PTR_ERR(dp); | |
1756 | if (IS_ERR(dp)) | |
d81eef1b | 1757 | goto err_unlock_free; |
2a4999f3 | 1758 | |
d81eef1b JR |
1759 | err = ovs_dp_cmd_fill_info(dp, reply, info->snd_portid, |
1760 | info->snd_seq, 0, OVS_DP_CMD_DEL); | |
1761 | BUG_ON(err < 0); | |
2a4999f3 PS |
1762 | |
1763 | __dp_destroy(dp); | |
d81eef1b | 1764 | ovs_unlock(); |
7d16c847 | 1765 | |
cb25142c | 1766 | ovs_notify(&dp_datapath_genl_family, &ovs_dp_datapath_multicast_group, reply, info); |
99620d2c | 1767 | return 0; |
d81eef1b JR |
1768 | |
1769 | err_unlock_free: | |
cd2a59e9 | 1770 | ovs_unlock(); |
d81eef1b | 1771 | kfree_skb(reply); |
cd2a59e9 | 1772 | return err; |
44e05eca BP |
1773 | } |
1774 | ||
df2c07f4 | 1775 | static int ovs_dp_cmd_set(struct sk_buff *skb, struct genl_info *info) |
064af421 | 1776 | { |
aaff4b55 | 1777 | struct sk_buff *reply; |
d6569377 | 1778 | struct datapath *dp; |
d6569377 | 1779 | int err; |
064af421 | 1780 | |
40c08cda | 1781 | reply = ovs_dp_cmd_alloc_info(); |
d81eef1b JR |
1782 | if (!reply) |
1783 | return -ENOMEM; | |
1784 | ||
cd2a59e9 | 1785 | ovs_lock(); |
2a4999f3 | 1786 | dp = lookup_datapath(sock_net(skb->sk), info->userhdr, info->attrs); |
cd2a59e9 | 1787 | err = PTR_ERR(dp); |
d6569377 | 1788 | if (IS_ERR(dp)) |
d81eef1b | 1789 | goto err_unlock_free; |
38c6ecbc | 1790 | |
c58cc9a4 TG |
1791 | ovs_dp_change(dp, info->attrs); |
1792 | ||
d81eef1b | 1793 | err = ovs_dp_cmd_fill_info(dp, reply, info->snd_portid, |
229486c2 | 1794 | info->snd_seq, 0, OVS_DP_CMD_GET); |
d81eef1b | 1795 | BUG_ON(err < 0); |
a0fb56c1 | 1796 | |
cd2a59e9 | 1797 | ovs_unlock(); |
7d16c847 | 1798 | |
cb25142c | 1799 | ovs_notify(&dp_datapath_genl_family, &ovs_dp_datapath_multicast_group, reply, info); |
aaff4b55 | 1800 | return 0; |
d81eef1b JR |
1801 | |
1802 | err_unlock_free: | |
cd2a59e9 | 1803 | ovs_unlock(); |
d81eef1b | 1804 | kfree_skb(reply); |
cd2a59e9 | 1805 | return err; |
064af421 BP |
1806 | } |
1807 | ||
df2c07f4 | 1808 | static int ovs_dp_cmd_get(struct sk_buff *skb, struct genl_info *info) |
1dcf111b | 1809 | { |
aaff4b55 | 1810 | struct sk_buff *reply; |
d6569377 | 1811 | struct datapath *dp; |
d6569377 | 1812 | int err; |
1dcf111b | 1813 | |
40c08cda | 1814 | reply = ovs_dp_cmd_alloc_info(); |
d81eef1b JR |
1815 | if (!reply) |
1816 | return -ENOMEM; | |
1817 | ||
d637497c | 1818 | ovs_lock(); |
2a4999f3 | 1819 | dp = lookup_datapath(sock_net(skb->sk), info->userhdr, info->attrs); |
cd2a59e9 PS |
1820 | if (IS_ERR(dp)) { |
1821 | err = PTR_ERR(dp); | |
d81eef1b | 1822 | goto err_unlock_free; |
cd2a59e9 | 1823 | } |
d81eef1b | 1824 | err = ovs_dp_cmd_fill_info(dp, reply, info->snd_portid, |
229486c2 | 1825 | info->snd_seq, 0, OVS_DP_CMD_GET); |
d81eef1b | 1826 | BUG_ON(err < 0); |
d637497c | 1827 | ovs_unlock(); |
aaff4b55 BP |
1828 | |
1829 | return genlmsg_reply(reply, info); | |
cd2a59e9 | 1830 | |
d81eef1b | 1831 | err_unlock_free: |
d637497c | 1832 | ovs_unlock(); |
d81eef1b | 1833 | kfree_skb(reply); |
cd2a59e9 | 1834 | return err; |
1dcf111b JP |
1835 | } |
1836 | ||
df2c07f4 | 1837 | static int ovs_dp_cmd_dump(struct sk_buff *skb, struct netlink_callback *cb) |
a7786963 | 1838 | { |
2a4999f3 | 1839 | struct ovs_net *ovs_net = net_generic(sock_net(skb->sk), ovs_net_id); |
254f2dc8 BP |
1840 | struct datapath *dp; |
1841 | int skip = cb->args[0]; | |
1842 | int i = 0; | |
a7786963 | 1843 | |
d637497c PS |
1844 | ovs_lock(); |
1845 | list_for_each_entry(dp, &ovs_net->dps, list_node) { | |
a2bab2f0 | 1846 | if (i >= skip && |
28aea917 | 1847 | ovs_dp_cmd_fill_info(dp, skb, NETLINK_CB(cb->skb).portid, |
aaff4b55 | 1848 | cb->nlh->nlmsg_seq, NLM_F_MULTI, |
229486c2 | 1849 | OVS_DP_CMD_GET) < 0) |
aaff4b55 | 1850 | break; |
254f2dc8 | 1851 | i++; |
a7786963 | 1852 | } |
d637497c | 1853 | ovs_unlock(); |
aaff4b55 | 1854 | |
254f2dc8 BP |
1855 | cb->args[0] = i; |
1856 | ||
aaff4b55 | 1857 | return skb->len; |
c19e6535 BP |
1858 | } |
1859 | ||
cb25142c PS |
1860 | static const struct nla_policy datapath_policy[OVS_DP_ATTR_MAX + 1] = { |
1861 | [OVS_DP_ATTR_NAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ - 1 }, | |
1862 | [OVS_DP_ATTR_UPCALL_PID] = { .type = NLA_U32 }, | |
1863 | [OVS_DP_ATTR_USER_FEATURES] = { .type = NLA_U32 }, | |
1864 | }; | |
1865 | ||
e515e66a | 1866 | static const struct genl_ops dp_datapath_genl_ops[] = { |
df2c07f4 | 1867 | { .cmd = OVS_DP_CMD_NEW, |
f1e9590e YHW |
1868 | #ifdef HAVE_GENL_VALIDATE_FLAGS |
1869 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, | |
1870 | #endif | |
a6a8674d | 1871 | .flags = GENL_UNS_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */ |
2ef0f1c2 | 1872 | #ifdef HAVE_GENL_OPS_POLICY |
aaff4b55 | 1873 | .policy = datapath_policy, |
2ef0f1c2 | 1874 | #endif |
df2c07f4 | 1875 | .doit = ovs_dp_cmd_new |
aaff4b55 | 1876 | }, |
df2c07f4 | 1877 | { .cmd = OVS_DP_CMD_DEL, |
f1e9590e YHW |
1878 | #ifdef HAVE_GENL_VALIDATE_FLAGS |
1879 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, | |
1880 | #endif | |
a6a8674d | 1881 | .flags = GENL_UNS_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */ |
2ef0f1c2 | 1882 | #ifdef HAVE_GENL_OPS_POLICY |
aaff4b55 | 1883 | .policy = datapath_policy, |
2ef0f1c2 | 1884 | #endif |
df2c07f4 | 1885 | .doit = ovs_dp_cmd_del |
aaff4b55 | 1886 | }, |
df2c07f4 | 1887 | { .cmd = OVS_DP_CMD_GET, |
f1e9590e YHW |
1888 | #ifdef HAVE_GENL_VALIDATE_FLAGS |
1889 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, | |
1890 | #endif | |
aaff4b55 | 1891 | .flags = 0, /* OK for unprivileged users. */ |
2ef0f1c2 | 1892 | #ifdef HAVE_GENL_OPS_POLICY |
aaff4b55 | 1893 | .policy = datapath_policy, |
2ef0f1c2 | 1894 | #endif |
df2c07f4 JP |
1895 | .doit = ovs_dp_cmd_get, |
1896 | .dumpit = ovs_dp_cmd_dump | |
aaff4b55 | 1897 | }, |
df2c07f4 | 1898 | { .cmd = OVS_DP_CMD_SET, |
f1e9590e YHW |
1899 | #ifdef HAVE_GENL_VALIDATE_FLAGS |
1900 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, | |
1901 | #endif | |
a6a8674d | 1902 | .flags = GENL_UNS_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */ |
2ef0f1c2 | 1903 | #ifdef HAVE_GENL_OPS_POLICY |
aaff4b55 | 1904 | .policy = datapath_policy, |
2ef0f1c2 | 1905 | #endif |
df2c07f4 | 1906 | .doit = ovs_dp_cmd_set, |
aaff4b55 BP |
1907 | }, |
1908 | }; | |
1909 | ||
ba63fe26 | 1910 | static struct genl_family dp_datapath_genl_family __ro_after_init = { |
df2c07f4 | 1911 | .hdrsize = sizeof(struct ovs_header), |
cb25142c PS |
1912 | .name = OVS_DATAPATH_FAMILY, |
1913 | .version = OVS_DATAPATH_VERSION, | |
1914 | .maxattr = OVS_DP_ATTR_MAX, | |
2ef0f1c2 JB |
1915 | #ifndef HAVE_GENL_OPS_POLICY |
1916 | .policy = datapath_policy, | |
1917 | #endif | |
b3dcb73c | 1918 | .netnsok = true, |
cb25142c PS |
1919 | .parallel_ops = true, |
1920 | .ops = dp_datapath_genl_ops, | |
1921 | .n_ops = ARRAY_SIZE(dp_datapath_genl_ops), | |
1922 | .mcgrps = &ovs_dp_datapath_multicast_group, | |
1923 | .n_mcgrps = 1, | |
ba63fe26 | 1924 | .module = THIS_MODULE, |
f0fef760 BP |
1925 | }; |
1926 | ||
cd2a59e9 | 1927 | /* Called with ovs_mutex or RCU read lock. */ |
df2c07f4 | 1928 | static int ovs_vport_cmd_fill_info(struct vport *vport, struct sk_buff *skb, |
b147f2e9 JB |
1929 | struct net *net, u32 portid, u32 seq, |
1930 | u32 flags, u8 cmd) | |
064af421 | 1931 | { |
df2c07f4 | 1932 | struct ovs_header *ovs_header; |
e926dfe3 | 1933 | struct ovs_vport_stats vport_stats; |
c19e6535 BP |
1934 | int err; |
1935 | ||
28aea917 | 1936 | ovs_header = genlmsg_put(skb, portid, seq, &dp_vport_genl_family, |
f0fef760 | 1937 | flags, cmd); |
df2c07f4 | 1938 | if (!ovs_header) |
f0fef760 | 1939 | return -EMSGSIZE; |
c19e6535 | 1940 | |
99769a40 | 1941 | ovs_header->dp_ifindex = get_dpifindex(vport->dp); |
c19e6535 | 1942 | |
c3cc8c03 DM |
1943 | if (nla_put_u32(skb, OVS_VPORT_ATTR_PORT_NO, vport->port_no) || |
1944 | nla_put_u32(skb, OVS_VPORT_ATTR_TYPE, vport->ops->type) || | |
e23775f2 | 1945 | nla_put_string(skb, OVS_VPORT_ATTR_NAME, |
b147f2e9 JB |
1946 | ovs_vport_name(vport)) || |
1947 | nla_put_u32(skb, OVS_VPORT_ATTR_IFINDEX, vport->dev->ifindex)) | |
c3cc8c03 | 1948 | goto nla_put_failure; |
c19e6535 | 1949 | |
b147f2e9 JB |
1950 | #ifdef HAVE_PEERNET2ID_ALLOC |
1951 | if (!net_eq(net, dev_net(vport->dev))) { | |
1952 | int id = peernet2id_alloc(net, dev_net(vport->dev)); | |
1953 | ||
1954 | if (nla_put_s32(skb, OVS_VPORT_ATTR_NETNSID, id)) | |
1955 | goto nla_put_failure; | |
1956 | } | |
1957 | ||
1958 | #endif | |
850b6b3b | 1959 | ovs_vport_get_stats(vport, &vport_stats); |
91b37647 PS |
1960 | if (nla_put_64bit(skb, OVS_VPORT_ATTR_STATS, |
1961 | sizeof(struct ovs_vport_stats), &vport_stats, | |
1962 | OVS_VPORT_ATTR_PAD)) | |
c3cc8c03 | 1963 | goto nla_put_failure; |
c19e6535 | 1964 | |
beb1c69a AW |
1965 | if (ovs_vport_get_upcall_portids(vport, skb)) |
1966 | goto nla_put_failure; | |
1967 | ||
850b6b3b | 1968 | err = ovs_vport_get_options(vport, skb); |
f0fef760 BP |
1969 | if (err == -EMSGSIZE) |
1970 | goto error; | |
c19e6535 | 1971 | |
23b48dc1 TG |
1972 | genlmsg_end(skb, ovs_header); |
1973 | return 0; | |
c19e6535 BP |
1974 | |
1975 | nla_put_failure: | |
1976 | err = -EMSGSIZE; | |
f0fef760 | 1977 | error: |
df2c07f4 | 1978 | genlmsg_cancel(skb, ovs_header); |
f0fef760 | 1979 | return err; |
064af421 BP |
1980 | } |
1981 | ||
d81eef1b JR |
1982 | static struct sk_buff *ovs_vport_cmd_alloc_info(void) |
1983 | { | |
1984 | return nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
1985 | } | |
1986 | ||
1987 | /* Called with ovs_mutex, only via ovs_dp_notify_wq(). */ | |
b147f2e9 JB |
1988 | struct sk_buff *ovs_vport_cmd_build_info(struct vport *vport, struct net *net, |
1989 | u32 portid, u32 seq, u8 cmd) | |
064af421 | 1990 | { |
c19e6535 | 1991 | struct sk_buff *skb; |
f0fef760 | 1992 | int retval; |
c19e6535 | 1993 | |
f0fef760 | 1994 | skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); |
c19e6535 BP |
1995 | if (!skb) |
1996 | return ERR_PTR(-ENOMEM); | |
1997 | ||
b147f2e9 | 1998 | retval = ovs_vport_cmd_fill_info(vport, skb, net, portid, seq, 0, cmd); |
c25ea534 JG |
1999 | BUG_ON(retval < 0); |
2000 | ||
c19e6535 | 2001 | return skb; |
f0fef760 | 2002 | } |
c19e6535 | 2003 | |
cd2a59e9 | 2004 | /* Called with ovs_mutex or RCU read lock. */ |
2a4999f3 | 2005 | static struct vport *lookup_vport(struct net *net, |
f1f60b85 | 2006 | const struct ovs_header *ovs_header, |
df2c07f4 | 2007 | struct nlattr *a[OVS_VPORT_ATTR_MAX + 1]) |
c19e6535 BP |
2008 | { |
2009 | struct datapath *dp; | |
2010 | struct vport *vport; | |
2011 | ||
b147f2e9 JB |
2012 | if (a[OVS_VPORT_ATTR_IFINDEX]) |
2013 | return ERR_PTR(-EOPNOTSUPP); | |
df2c07f4 | 2014 | if (a[OVS_VPORT_ATTR_NAME]) { |
2a4999f3 | 2015 | vport = ovs_vport_locate(net, nla_data(a[OVS_VPORT_ATTR_NAME])); |
ed099e92 | 2016 | if (!vport) |
c19e6535 | 2017 | return ERR_PTR(-ENODEV); |
24ce832d BP |
2018 | if (ovs_header->dp_ifindex && |
2019 | ovs_header->dp_ifindex != get_dpifindex(vport->dp)) | |
2020 | return ERR_PTR(-ENODEV); | |
c19e6535 | 2021 | return vport; |
df2c07f4 JP |
2022 | } else if (a[OVS_VPORT_ATTR_PORT_NO]) { |
2023 | u32 port_no = nla_get_u32(a[OVS_VPORT_ATTR_PORT_NO]); | |
c19e6535 BP |
2024 | |
2025 | if (port_no >= DP_MAX_PORTS) | |
f0fef760 | 2026 | return ERR_PTR(-EFBIG); |
c19e6535 | 2027 | |
2a4999f3 | 2028 | dp = get_dp(net, ovs_header->dp_ifindex); |
c19e6535 BP |
2029 | if (!dp) |
2030 | return ERR_PTR(-ENODEV); | |
f2459fe7 | 2031 | |
cd2a59e9 | 2032 | vport = ovs_vport_ovsl_rcu(dp, port_no); |
ed099e92 | 2033 | if (!vport) |
17535c57 | 2034 | return ERR_PTR(-ENODEV); |
c19e6535 BP |
2035 | return vport; |
2036 | } else | |
2037 | return ERR_PTR(-EINVAL); | |
b147f2e9 | 2038 | |
064af421 BP |
2039 | } |
2040 | ||
8ce37339 PS |
2041 | /* Called with ovs_mutex */ |
2042 | static void update_headroom(struct datapath *dp) | |
2043 | { | |
2044 | unsigned dev_headroom, max_headroom = 0; | |
2045 | struct net_device *dev; | |
2046 | struct vport *vport; | |
2047 | int i; | |
2048 | ||
2049 | for (i = 0; i < DP_VPORT_HASH_BUCKETS; i++) { | |
2050 | hlist_for_each_entry_rcu(vport, &dp->ports[i], dp_hash_node) { | |
2051 | dev = vport->dev; | |
2052 | dev_headroom = netdev_get_fwd_headroom(dev); | |
2053 | if (dev_headroom > max_headroom) | |
2054 | max_headroom = dev_headroom; | |
2055 | } | |
2056 | } | |
2057 | ||
2058 | dp->max_headroom = max_headroom; | |
2059 | for (i = 0; i < DP_VPORT_HASH_BUCKETS; i++) | |
2060 | hlist_for_each_entry_rcu(vport, &dp->ports[i], dp_hash_node) | |
2061 | netdev_set_rx_headroom(vport->dev, max_headroom); | |
2062 | } | |
2063 | ||
df2c07f4 | 2064 | static int ovs_vport_cmd_new(struct sk_buff *skb, struct genl_info *info) |
c19e6535 | 2065 | { |
f0fef760 | 2066 | struct nlattr **a = info->attrs; |
df2c07f4 | 2067 | struct ovs_header *ovs_header = info->userhdr; |
c19e6535 | 2068 | struct vport_parms parms; |
ed099e92 | 2069 | struct sk_buff *reply; |
c19e6535 | 2070 | struct vport *vport; |
c19e6535 | 2071 | struct datapath *dp; |
b0ec0f27 | 2072 | u32 port_no; |
c19e6535 | 2073 | int err; |
b0ec0f27 | 2074 | |
ea36840f BP |
2075 | if (!a[OVS_VPORT_ATTR_NAME] || !a[OVS_VPORT_ATTR_TYPE] || |
2076 | !a[OVS_VPORT_ATTR_UPCALL_PID]) | |
d81eef1b | 2077 | return -EINVAL; |
b147f2e9 JB |
2078 | if (a[OVS_VPORT_ATTR_IFINDEX]) |
2079 | return -EOPNOTSUPP; | |
d81eef1b JR |
2080 | |
2081 | port_no = a[OVS_VPORT_ATTR_PORT_NO] | |
2082 | ? nla_get_u32(a[OVS_VPORT_ATTR_PORT_NO]) : 0; | |
2083 | if (port_no >= DP_MAX_PORTS) | |
2084 | return -EFBIG; | |
2085 | ||
2086 | reply = ovs_vport_cmd_alloc_info(); | |
2087 | if (!reply) | |
2088 | return -ENOMEM; | |
f0fef760 | 2089 | |
cd2a59e9 | 2090 | ovs_lock(); |
5a38795f | 2091 | restart: |
2a4999f3 | 2092 | dp = get_dp(sock_net(skb->sk), ovs_header->dp_ifindex); |
c19e6535 BP |
2093 | err = -ENODEV; |
2094 | if (!dp) | |
d81eef1b | 2095 | goto exit_unlock_free; |
c19e6535 | 2096 | |
d81eef1b | 2097 | if (port_no) { |
cd2a59e9 | 2098 | vport = ovs_vport_ovsl(dp, port_no); |
c19e6535 BP |
2099 | err = -EBUSY; |
2100 | if (vport) | |
d81eef1b | 2101 | goto exit_unlock_free; |
c19e6535 BP |
2102 | } else { |
2103 | for (port_no = 1; ; port_no++) { | |
2104 | if (port_no >= DP_MAX_PORTS) { | |
2105 | err = -EFBIG; | |
d81eef1b | 2106 | goto exit_unlock_free; |
c19e6535 | 2107 | } |
cd2a59e9 | 2108 | vport = ovs_vport_ovsl(dp, port_no); |
c19e6535 BP |
2109 | if (!vport) |
2110 | break; | |
51d4d598 | 2111 | } |
064af421 | 2112 | } |
b0ec0f27 | 2113 | |
df2c07f4 JP |
2114 | parms.name = nla_data(a[OVS_VPORT_ATTR_NAME]); |
2115 | parms.type = nla_get_u32(a[OVS_VPORT_ATTR_TYPE]); | |
2116 | parms.options = a[OVS_VPORT_ATTR_OPTIONS]; | |
c19e6535 BP |
2117 | parms.dp = dp; |
2118 | parms.port_no = port_no; | |
beb1c69a | 2119 | parms.upcall_portids = a[OVS_VPORT_ATTR_UPCALL_PID]; |
c19e6535 BP |
2120 | |
2121 | vport = new_vport(&parms); | |
2122 | err = PTR_ERR(vport); | |
5a38795f TG |
2123 | if (IS_ERR(vport)) { |
2124 | if (err == -EAGAIN) | |
2125 | goto restart; | |
d81eef1b | 2126 | goto exit_unlock_free; |
5a38795f | 2127 | } |
c19e6535 | 2128 | |
b147f2e9 JB |
2129 | err = ovs_vport_cmd_fill_info(vport, reply, genl_info_net(info), |
2130 | info->snd_portid, info->snd_seq, 0, | |
2131 | OVS_VPORT_CMD_NEW); | |
d81eef1b | 2132 | BUG_ON(err < 0); |
8ce37339 PS |
2133 | |
2134 | if (netdev_get_fwd_headroom(vport->dev) > dp->max_headroom) | |
2135 | update_headroom(dp); | |
2136 | else | |
2137 | netdev_set_rx_headroom(vport->dev, dp->max_headroom); | |
2138 | ||
d81eef1b | 2139 | ovs_unlock(); |
e297c6b7 | 2140 | |
cb25142c | 2141 | ovs_notify(&dp_vport_genl_family, &ovs_dp_vport_multicast_group, reply, info); |
d81eef1b | 2142 | return 0; |
c19e6535 | 2143 | |
d81eef1b | 2144 | exit_unlock_free: |
cd2a59e9 | 2145 | ovs_unlock(); |
d81eef1b | 2146 | kfree_skb(reply); |
c19e6535 | 2147 | return err; |
44e05eca BP |
2148 | } |
2149 | ||
df2c07f4 | 2150 | static int ovs_vport_cmd_set(struct sk_buff *skb, struct genl_info *info) |
44e05eca | 2151 | { |
f0fef760 BP |
2152 | struct nlattr **a = info->attrs; |
2153 | struct sk_buff *reply; | |
c19e6535 | 2154 | struct vport *vport; |
c19e6535 | 2155 | int err; |
44e05eca | 2156 | |
d81eef1b JR |
2157 | reply = ovs_vport_cmd_alloc_info(); |
2158 | if (!reply) | |
2159 | return -ENOMEM; | |
2160 | ||
cd2a59e9 | 2161 | ovs_lock(); |
2a4999f3 | 2162 | vport = lookup_vport(sock_net(skb->sk), info->userhdr, a); |
c19e6535 BP |
2163 | err = PTR_ERR(vport); |
2164 | if (IS_ERR(vport)) | |
d81eef1b | 2165 | goto exit_unlock_free; |
44e05eca | 2166 | |
6455100f | 2167 | if (a[OVS_VPORT_ATTR_TYPE] && |
17ec1d04 | 2168 | nla_get_u32(a[OVS_VPORT_ATTR_TYPE]) != vport->ops->type) { |
4879d4c7 | 2169 | err = -EINVAL; |
d81eef1b | 2170 | goto exit_unlock_free; |
c25ea534 JG |
2171 | } |
2172 | ||
17ec1d04 | 2173 | if (a[OVS_VPORT_ATTR_OPTIONS]) { |
850b6b3b | 2174 | err = ovs_vport_set_options(vport, a[OVS_VPORT_ATTR_OPTIONS]); |
17ec1d04 | 2175 | if (err) |
d81eef1b | 2176 | goto exit_unlock_free; |
17ec1d04 | 2177 | } |
1fc7083d | 2178 | |
beb1c69a | 2179 | if (a[OVS_VPORT_ATTR_UPCALL_PID]) { |
7d16c847 PS |
2180 | struct nlattr *ids = a[OVS_VPORT_ATTR_UPCALL_PID]; |
2181 | ||
2182 | err = ovs_vport_set_upcall_portids(vport, ids); | |
beb1c69a AW |
2183 | if (err) |
2184 | goto exit_unlock_free; | |
2185 | } | |
c19e6535 | 2186 | |
b147f2e9 JB |
2187 | err = ovs_vport_cmd_fill_info(vport, reply, genl_info_net(info), |
2188 | info->snd_portid, info->snd_seq, 0, | |
229486c2 | 2189 | OVS_VPORT_CMD_SET); |
c25ea534 | 2190 | BUG_ON(err < 0); |
cd2a59e9 | 2191 | ovs_unlock(); |
d81eef1b | 2192 | |
cb25142c | 2193 | ovs_notify(&dp_vport_genl_family, &ovs_dp_vport_multicast_group, reply, info); |
c25ea534 JG |
2194 | return 0; |
2195 | ||
d81eef1b | 2196 | exit_unlock_free: |
cd2a59e9 | 2197 | ovs_unlock(); |
d81eef1b | 2198 | kfree_skb(reply); |
c19e6535 | 2199 | return err; |
064af421 BP |
2200 | } |
2201 | ||
df2c07f4 | 2202 | static int ovs_vport_cmd_del(struct sk_buff *skb, struct genl_info *info) |
7c40efc9 | 2203 | { |
8ce37339 | 2204 | bool must_update_headroom = false; |
f0fef760 BP |
2205 | struct nlattr **a = info->attrs; |
2206 | struct sk_buff *reply; | |
8ce37339 | 2207 | struct datapath *dp; |
c19e6535 | 2208 | struct vport *vport; |
c19e6535 BP |
2209 | int err; |
2210 | ||
d81eef1b JR |
2211 | reply = ovs_vport_cmd_alloc_info(); |
2212 | if (!reply) | |
2213 | return -ENOMEM; | |
2214 | ||
cd2a59e9 | 2215 | ovs_lock(); |
2a4999f3 | 2216 | vport = lookup_vport(sock_net(skb->sk), info->userhdr, a); |
c19e6535 | 2217 | err = PTR_ERR(vport); |
f0fef760 | 2218 | if (IS_ERR(vport)) |
d81eef1b | 2219 | goto exit_unlock_free; |
c19e6535 | 2220 | |
df2c07f4 | 2221 | if (vport->port_no == OVSP_LOCAL) { |
f0fef760 | 2222 | err = -EINVAL; |
d81eef1b | 2223 | goto exit_unlock_free; |
f0fef760 BP |
2224 | } |
2225 | ||
b147f2e9 JB |
2226 | err = ovs_vport_cmd_fill_info(vport, reply, genl_info_net(info), |
2227 | info->snd_portid, info->snd_seq, 0, | |
2228 | OVS_VPORT_CMD_DEL); | |
d81eef1b | 2229 | BUG_ON(err < 0); |
8ce37339 PS |
2230 | |
2231 | /* the vport deletion may trigger dp headroom update */ | |
2232 | dp = vport->dp; | |
2233 | if (netdev_get_fwd_headroom(vport->dev) == dp->max_headroom) | |
2234 | must_update_headroom = true; | |
2235 | netdev_reset_rx_headroom(vport->dev); | |
850b6b3b | 2236 | ovs_dp_detach_port(vport); |
8ce37339 PS |
2237 | |
2238 | if (must_update_headroom) | |
2239 | update_headroom(dp); | |
2240 | ||
d81eef1b | 2241 | ovs_unlock(); |
f0fef760 | 2242 | |
cb25142c | 2243 | ovs_notify(&dp_vport_genl_family, &ovs_dp_vport_multicast_group, reply, info); |
d81eef1b | 2244 | return 0; |
f0fef760 | 2245 | |
d81eef1b | 2246 | exit_unlock_free: |
cd2a59e9 | 2247 | ovs_unlock(); |
d81eef1b | 2248 | kfree_skb(reply); |
c19e6535 | 2249 | return err; |
7c40efc9 BP |
2250 | } |
2251 | ||
df2c07f4 | 2252 | static int ovs_vport_cmd_get(struct sk_buff *skb, struct genl_info *info) |
7c40efc9 | 2253 | { |
f0fef760 | 2254 | struct nlattr **a = info->attrs; |
df2c07f4 | 2255 | struct ovs_header *ovs_header = info->userhdr; |
ed099e92 | 2256 | struct sk_buff *reply; |
c19e6535 | 2257 | struct vport *vport; |
c19e6535 BP |
2258 | int err; |
2259 | ||
d81eef1b JR |
2260 | reply = ovs_vport_cmd_alloc_info(); |
2261 | if (!reply) | |
2262 | return -ENOMEM; | |
2263 | ||
ed099e92 | 2264 | rcu_read_lock(); |
2a4999f3 | 2265 | vport = lookup_vport(sock_net(skb->sk), ovs_header, a); |
c19e6535 BP |
2266 | err = PTR_ERR(vport); |
2267 | if (IS_ERR(vport)) | |
d81eef1b | 2268 | goto exit_unlock_free; |
b147f2e9 JB |
2269 | err = ovs_vport_cmd_fill_info(vport, reply, genl_info_net(info), |
2270 | info->snd_portid, info->snd_seq, 0, | |
229486c2 | 2271 | OVS_VPORT_CMD_GET); |
d81eef1b | 2272 | BUG_ON(err < 0); |
df2fa9b5 JG |
2273 | rcu_read_unlock(); |
2274 | ||
2275 | return genlmsg_reply(reply, info); | |
ed099e92 | 2276 | |
d81eef1b | 2277 | exit_unlock_free: |
ed099e92 | 2278 | rcu_read_unlock(); |
d81eef1b | 2279 | kfree_skb(reply); |
c19e6535 BP |
2280 | return err; |
2281 | } | |
2282 | ||
df2c07f4 | 2283 | static int ovs_vport_cmd_dump(struct sk_buff *skb, struct netlink_callback *cb) |
c19e6535 | 2284 | { |
df2c07f4 | 2285 | struct ovs_header *ovs_header = genlmsg_data(nlmsg_data(cb->nlh)); |
c19e6535 | 2286 | struct datapath *dp; |
95b1d73a PS |
2287 | int bucket = cb->args[0], skip = cb->args[1]; |
2288 | int i, j = 0; | |
c19e6535 | 2289 | |
03fc2881 | 2290 | rcu_read_lock(); |
01ac0970 | 2291 | dp = get_dp_rcu(sock_net(skb->sk), ovs_header->dp_ifindex); |
03fc2881 JR |
2292 | if (!dp) { |
2293 | rcu_read_unlock(); | |
f0fef760 | 2294 | return -ENODEV; |
03fc2881 | 2295 | } |
95b1d73a | 2296 | for (i = bucket; i < DP_VPORT_HASH_BUCKETS; i++) { |
ed099e92 | 2297 | struct vport *vport; |
95b1d73a PS |
2298 | |
2299 | j = 0; | |
f8dfbcb7 | 2300 | hlist_for_each_entry_rcu(vport, &dp->ports[i], dp_hash_node) { |
95b1d73a PS |
2301 | if (j >= skip && |
2302 | ovs_vport_cmd_fill_info(vport, skb, | |
b147f2e9 | 2303 | sock_net(skb->sk), |
28aea917 | 2304 | NETLINK_CB(cb->skb).portid, |
95b1d73a PS |
2305 | cb->nlh->nlmsg_seq, |
2306 | NLM_F_MULTI, | |
229486c2 | 2307 | OVS_VPORT_CMD_GET) < 0) |
95b1d73a PS |
2308 | goto out; |
2309 | ||
2310 | j++; | |
2311 | } | |
2312 | skip = 0; | |
c19e6535 | 2313 | } |
95b1d73a | 2314 | out: |
ed099e92 | 2315 | rcu_read_unlock(); |
c19e6535 | 2316 | |
95b1d73a PS |
2317 | cb->args[0] = i; |
2318 | cb->args[1] = j; | |
f0fef760 | 2319 | |
95b1d73a | 2320 | return skb->len; |
7c40efc9 BP |
2321 | } |
2322 | ||
cb25142c PS |
2323 | static const struct nla_policy vport_policy[OVS_VPORT_ATTR_MAX + 1] = { |
2324 | [OVS_VPORT_ATTR_NAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ - 1 }, | |
2325 | [OVS_VPORT_ATTR_STATS] = { .len = sizeof(struct ovs_vport_stats) }, | |
2326 | [OVS_VPORT_ATTR_PORT_NO] = { .type = NLA_U32 }, | |
2327 | [OVS_VPORT_ATTR_TYPE] = { .type = NLA_U32 }, | |
8fc8986d | 2328 | [OVS_VPORT_ATTR_UPCALL_PID] = { .type = NLA_UNSPEC }, |
cb25142c | 2329 | [OVS_VPORT_ATTR_OPTIONS] = { .type = NLA_NESTED }, |
b147f2e9 JB |
2330 | [OVS_VPORT_ATTR_IFINDEX] = { .type = NLA_U32 }, |
2331 | [OVS_VPORT_ATTR_NETNSID] = { .type = NLA_S32 }, | |
cb25142c PS |
2332 | }; |
2333 | ||
e515e66a | 2334 | static const struct genl_ops dp_vport_genl_ops[] = { |
df2c07f4 | 2335 | { .cmd = OVS_VPORT_CMD_NEW, |
f1e9590e YHW |
2336 | #ifdef HAVE_GENL_VALIDATE_FLAGS |
2337 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, | |
2338 | #endif | |
a6a8674d | 2339 | .flags = GENL_UNS_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */ |
2ef0f1c2 | 2340 | #ifdef HAVE_GENL_OPS_POLICY |
f0fef760 | 2341 | .policy = vport_policy, |
2ef0f1c2 | 2342 | #endif |
df2c07f4 | 2343 | .doit = ovs_vport_cmd_new |
f0fef760 | 2344 | }, |
df2c07f4 | 2345 | { .cmd = OVS_VPORT_CMD_DEL, |
f1e9590e YHW |
2346 | #ifdef HAVE_GENL_VALIDATE_FLAGS |
2347 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, | |
2348 | #endif | |
a6a8674d | 2349 | .flags = GENL_UNS_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */ |
2ef0f1c2 | 2350 | #ifdef HAVE_GENL_OPS_POLICY |
f0fef760 | 2351 | .policy = vport_policy, |
2ef0f1c2 | 2352 | #endif |
df2c07f4 | 2353 | .doit = ovs_vport_cmd_del |
f0fef760 | 2354 | }, |
df2c07f4 | 2355 | { .cmd = OVS_VPORT_CMD_GET, |
f1e9590e YHW |
2356 | #ifdef HAVE_GENL_VALIDATE_FLAGS |
2357 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, | |
2358 | #endif | |
f0fef760 | 2359 | .flags = 0, /* OK for unprivileged users. */ |
2ef0f1c2 | 2360 | #ifdef HAVE_GENL_OPS_POLICY |
f0fef760 | 2361 | .policy = vport_policy, |
2ef0f1c2 | 2362 | #endif |
df2c07f4 JP |
2363 | .doit = ovs_vport_cmd_get, |
2364 | .dumpit = ovs_vport_cmd_dump | |
f0fef760 | 2365 | }, |
df2c07f4 | 2366 | { .cmd = OVS_VPORT_CMD_SET, |
f1e9590e YHW |
2367 | #ifdef HAVE_GENL_VALIDATE_FLAGS |
2368 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, | |
2369 | #endif | |
a6a8674d | 2370 | .flags = GENL_UNS_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */ |
2ef0f1c2 | 2371 | #ifdef HAVE_GENL_OPS_POLICY |
f0fef760 | 2372 | .policy = vport_policy, |
2ef0f1c2 | 2373 | #endif |
df2c07f4 | 2374 | .doit = ovs_vport_cmd_set, |
f0fef760 BP |
2375 | }, |
2376 | }; | |
2377 | ||
ba63fe26 | 2378 | struct genl_family dp_vport_genl_family __ro_after_init = { |
cb25142c PS |
2379 | .hdrsize = sizeof(struct ovs_header), |
2380 | .name = OVS_VPORT_FAMILY, | |
2381 | .version = OVS_VPORT_VERSION, | |
2382 | .maxattr = OVS_VPORT_ATTR_MAX, | |
2ef0f1c2 JB |
2383 | #ifndef HAVE_GENL_OPS_POLICY |
2384 | .policy = vport_policy, | |
2385 | #endif | |
cb25142c PS |
2386 | .netnsok = true, |
2387 | .parallel_ops = true, | |
2388 | .ops = dp_vport_genl_ops, | |
2389 | .n_ops = ARRAY_SIZE(dp_vport_genl_ops), | |
2390 | .mcgrps = &ovs_dp_vport_multicast_group, | |
2391 | .n_mcgrps = 1, | |
ba63fe26 | 2392 | .module = THIS_MODULE, |
982b8810 | 2393 | }; |
ed099e92 | 2394 | |
18fd3a52 | 2395 | static struct genl_family *dp_genl_families[] = { |
cb25142c PS |
2396 | &dp_datapath_genl_family, |
2397 | &dp_vport_genl_family, | |
2398 | &dp_flow_genl_family, | |
2399 | &dp_packet_genl_family, | |
1cb57039 | 2400 | &dp_meter_genl_family, |
cb2a5486 YHW |
2401 | #if IS_ENABLED(CONFIG_NETFILTER_CONNCOUNT) |
2402 | &dp_ct_limit_genl_family, | |
2403 | #endif | |
982b8810 | 2404 | }; |
ed099e92 | 2405 | |
982b8810 BP |
2406 | static void dp_unregister_genl(int n_families) |
2407 | { | |
2408 | int i; | |
ed099e92 | 2409 | |
b867ca75 | 2410 | for (i = 0; i < n_families; i++) |
cb25142c | 2411 | genl_unregister_family(dp_genl_families[i]); |
ed099e92 BP |
2412 | } |
2413 | ||
ba63fe26 | 2414 | static int __init dp_register_genl(void) |
064af421 | 2415 | { |
982b8810 BP |
2416 | int err; |
2417 | int i; | |
064af421 | 2418 | |
982b8810 | 2419 | for (i = 0; i < ARRAY_SIZE(dp_genl_families); i++) { |
064af421 | 2420 | |
cb25142c | 2421 | err = genl_register_family(dp_genl_families[i]); |
982b8810 BP |
2422 | if (err) |
2423 | goto error; | |
982b8810 | 2424 | } |
9cc8b4e4 | 2425 | |
982b8810 | 2426 | return 0; |
064af421 BP |
2427 | |
2428 | error: | |
cb25142c | 2429 | dp_unregister_genl(i); |
982b8810 | 2430 | return err; |
064af421 BP |
2431 | } |
2432 | ||
2a4999f3 PS |
2433 | static int __net_init ovs_init_net(struct net *net) |
2434 | { | |
2435 | struct ovs_net *ovs_net = net_generic(net, ovs_net_id); | |
2436 | ||
2437 | INIT_LIST_HEAD(&ovs_net->dps); | |
cd2a59e9 | 2438 | INIT_WORK(&ovs_net->dp_notify_work, ovs_dp_notify_wq); |
7f4a5d68 | 2439 | ovs_netns_frags_init(net); |
2440 | ovs_netns_frags6_init(net); | |
cb2a5486 | 2441 | return ovs_ct_init(net); |
2a4999f3 PS |
2442 | } |
2443 | ||
cabd5516 PS |
2444 | static void __net_exit list_vports_from_net(struct net *net, struct net *dnet, |
2445 | struct list_head *head) | |
2a4999f3 PS |
2446 | { |
2447 | struct ovs_net *ovs_net = net_generic(net, ovs_net_id); | |
cabd5516 PS |
2448 | struct datapath *dp; |
2449 | ||
2450 | list_for_each_entry(dp, &ovs_net->dps, list_node) { | |
2451 | int i; | |
2452 | ||
2453 | for (i = 0; i < DP_VPORT_HASH_BUCKETS; i++) { | |
2454 | struct vport *vport; | |
2455 | ||
2456 | hlist_for_each_entry(vport, &dp->ports[i], dp_hash_node) { | |
cabd5516 PS |
2457 | |
2458 | if (vport->ops->type != OVS_VPORT_TYPE_INTERNAL) | |
2459 | continue; | |
2460 | ||
e23775f2 | 2461 | if (dev_net(vport->dev) == dnet) |
cabd5516 PS |
2462 | list_add(&vport->detach_list, head); |
2463 | } | |
2464 | } | |
2465 | } | |
2466 | } | |
2467 | ||
2468 | static void __net_exit ovs_exit_net(struct net *dnet) | |
2469 | { | |
2470 | struct datapath *dp, *dp_next; | |
2471 | struct ovs_net *ovs_net = net_generic(dnet, ovs_net_id); | |
2472 | struct vport *vport, *vport_next; | |
2473 | struct net *net; | |
2474 | LIST_HEAD(head); | |
2a4999f3 | 2475 | |
7f4a5d68 | 2476 | ovs_netns_frags6_exit(dnet); |
2477 | ovs_netns_frags_exit(dnet); | |
038e34ab | 2478 | ovs_ct_exit(dnet); |
cd2a59e9 PS |
2479 | ovs_lock(); |
2480 | list_for_each_entry_safe(dp, dp_next, &ovs_net->dps, list_node) | |
2481 | __dp_destroy(dp); | |
cabd5516 | 2482 | |
3d10a0c8 YHW |
2483 | #ifdef HAVE_NET_RWSEM |
2484 | down_read(&net_rwsem); | |
2485 | #else | |
cabd5516 | 2486 | rtnl_lock(); |
3d10a0c8 | 2487 | #endif |
cabd5516 PS |
2488 | for_each_net(net) |
2489 | list_vports_from_net(net, dnet, &head); | |
3d10a0c8 YHW |
2490 | #ifdef HAVE_NET_RWSEM |
2491 | up_read(&net_rwsem); | |
2492 | #else | |
cabd5516 | 2493 | rtnl_unlock(); |
3d10a0c8 | 2494 | #endif |
cabd5516 PS |
2495 | |
2496 | /* Detach all vports from given namespace. */ | |
2497 | list_for_each_entry_safe(vport, vport_next, &head, detach_list) { | |
2498 | list_del(&vport->detach_list); | |
2499 | ovs_dp_detach_port(vport); | |
2500 | } | |
2501 | ||
cd2a59e9 PS |
2502 | ovs_unlock(); |
2503 | ||
2504 | cancel_work_sync(&ovs_net->dp_notify_work); | |
2a4999f3 PS |
2505 | } |
2506 | ||
2507 | static struct pernet_operations ovs_net_ops = { | |
2508 | .init = ovs_init_net, | |
2509 | .exit = ovs_exit_net, | |
2510 | .id = &ovs_net_id, | |
2511 | .size = sizeof(struct ovs_net), | |
2512 | }; | |
2513 | ||
22d24ebf BP |
2514 | static int __init dp_init(void) |
2515 | { | |
2516 | int err; | |
2517 | ||
9cfa4718 | 2518 | BUILD_BUG_ON(sizeof(struct ovs_skb_cb) > sizeof_field(struct sk_buff, cb)); |
22d24ebf | 2519 | |
26bfaeaa | 2520 | pr_info("Open vSwitch switching datapath %s\n", VERSION); |
064af421 | 2521 | |
907c26a8 | 2522 | ovs_nsh_init(); |
595e069a JS |
2523 | err = action_fifos_init(); |
2524 | if (err) | |
7f4a5d68 | 2525 | goto error; |
595e069a | 2526 | |
5282e284 | 2527 | err = ovs_internal_dev_rtnl_link_register(); |
2c8c4fb7 AZ |
2528 | if (err) |
2529 | goto error_action_fifos_exit; | |
2530 | ||
5282e284 TG |
2531 | err = ovs_flow_init(); |
2532 | if (err) | |
2533 | goto error_unreg_rtnl_link; | |
2534 | ||
850b6b3b | 2535 | err = ovs_vport_init(); |
064af421 BP |
2536 | if (err) |
2537 | goto error_flow_exit; | |
2538 | ||
2a4999f3 | 2539 | err = register_pernet_device(&ovs_net_ops); |
f2459fe7 JG |
2540 | if (err) |
2541 | goto error_vport_exit; | |
2542 | ||
7f4a5d68 | 2543 | err = compat_init(); |
2a4999f3 PS |
2544 | if (err) |
2545 | goto error_netns_exit; | |
2546 | ||
7f4a5d68 | 2547 | err = register_netdevice_notifier(&ovs_dp_device_notifier); |
2548 | if (err) | |
2549 | goto error_compat_exit; | |
2550 | ||
5a38795f TG |
2551 | err = ovs_netdev_init(); |
2552 | if (err) | |
2553 | goto error_unreg_notifier; | |
2554 | ||
982b8810 BP |
2555 | err = dp_register_genl(); |
2556 | if (err < 0) | |
5a38795f | 2557 | goto error_unreg_netdev; |
982b8810 | 2558 | |
064af421 BP |
2559 | return 0; |
2560 | ||
5a38795f TG |
2561 | error_unreg_netdev: |
2562 | ovs_netdev_exit(); | |
064af421 | 2563 | error_unreg_notifier: |
850b6b3b | 2564 | unregister_netdevice_notifier(&ovs_dp_device_notifier); |
7f4a5d68 | 2565 | error_compat_exit: |
2566 | compat_exit(); | |
2a4999f3 PS |
2567 | error_netns_exit: |
2568 | unregister_pernet_device(&ovs_net_ops); | |
f2459fe7 | 2569 | error_vport_exit: |
850b6b3b | 2570 | ovs_vport_exit(); |
064af421 | 2571 | error_flow_exit: |
850b6b3b | 2572 | ovs_flow_exit(); |
5282e284 TG |
2573 | error_unreg_rtnl_link: |
2574 | ovs_internal_dev_rtnl_link_unregister(); | |
2c8c4fb7 AZ |
2575 | error_action_fifos_exit: |
2576 | action_fifos_exit(); | |
064af421 | 2577 | error: |
907c26a8 | 2578 | ovs_nsh_cleanup(); |
064af421 BP |
2579 | return err; |
2580 | } | |
2581 | ||
2582 | static void dp_cleanup(void) | |
2583 | { | |
982b8810 | 2584 | dp_unregister_genl(ARRAY_SIZE(dp_genl_families)); |
5a38795f | 2585 | ovs_netdev_exit(); |
850b6b3b | 2586 | unregister_netdevice_notifier(&ovs_dp_device_notifier); |
7f4a5d68 | 2587 | compat_exit(); |
2a4999f3 PS |
2588 | unregister_pernet_device(&ovs_net_ops); |
2589 | rcu_barrier(); | |
850b6b3b JG |
2590 | ovs_vport_exit(); |
2591 | ovs_flow_exit(); | |
5282e284 | 2592 | ovs_internal_dev_rtnl_link_unregister(); |
2c8c4fb7 | 2593 | action_fifos_exit(); |
907c26a8 | 2594 | ovs_nsh_cleanup(); |
064af421 BP |
2595 | } |
2596 | ||
2597 | module_init(dp_init); | |
2598 | module_exit(dp_cleanup); | |
2599 | ||
2600 | MODULE_DESCRIPTION("Open vSwitch switching datapath"); | |
2601 | MODULE_LICENSE("GPL"); | |
3d0666d2 | 2602 | MODULE_VERSION(VERSION); |
75e2077e TLSC |
2603 | MODULE_ALIAS_GENL_FAMILY(OVS_DATAPATH_FAMILY); |
2604 | MODULE_ALIAS_GENL_FAMILY(OVS_VPORT_FAMILY); | |
2605 | MODULE_ALIAS_GENL_FAMILY(OVS_FLOW_FAMILY); | |
2606 | MODULE_ALIAS_GENL_FAMILY(OVS_PACKET_FAMILY); | |
1cb57039 | 2607 | MODULE_ALIAS_GENL_FAMILY(OVS_METER_FAMILY); |
cb2a5486 | 2608 | MODULE_ALIAS_GENL_FAMILY(OVS_CT_LIMIT_FAMILY); |