Commit | Line | Data |
---|---|---|
ccb1352e | 1 | /* |
83c8df26 | 2 | * Copyright (c) 2007-2014 Nicira, Inc. |
ccb1352e JG |
3 | * |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of version 2 of the GNU General Public | |
6 | * License as published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, but | |
9 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
11 | * General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License | |
14 | * along with this program; if not, write to the Free Software | |
15 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA | |
16 | * 02110-1301, USA | |
17 | */ | |
18 | ||
ccb1352e JG |
19 | #include <linux/etherdevice.h> |
20 | #include <linux/if.h> | |
21 | #include <linux/if_vlan.h> | |
46df7b81 | 22 | #include <linux/jhash.h> |
ccb1352e JG |
23 | #include <linux/kernel.h> |
24 | #include <linux/list.h> | |
25 | #include <linux/mutex.h> | |
26 | #include <linux/percpu.h> | |
27 | #include <linux/rcupdate.h> | |
28 | #include <linux/rtnetlink.h> | |
29 | #include <linux/compat.h> | |
46df7b81 | 30 | #include <net/net_namespace.h> |
62b9c8d0 | 31 | #include <linux/module.h> |
ccb1352e | 32 | |
46df7b81 | 33 | #include "datapath.h" |
ccb1352e JG |
34 | #include "vport.h" |
35 | #include "vport-internal_dev.h" | |
36 | ||
443cd88c SH |
37 | static void ovs_vport_record_error(struct vport *, |
38 | enum vport_err_type err_type); | |
39 | ||
62b9c8d0 | 40 | static LIST_HEAD(vport_ops_list); |
ccb1352e | 41 | |
8e4e1713 | 42 | /* Protected by RCU read lock for reading, ovs_mutex for writing. */ |
ccb1352e JG |
43 | static struct hlist_head *dev_table; |
44 | #define VPORT_HASH_BUCKETS 1024 | |
45 | ||
46 | /** | |
47 | * ovs_vport_init - initialize vport subsystem | |
48 | * | |
49 | * Called at module load time to initialize the vport subsystem. | |
50 | */ | |
51 | int ovs_vport_init(void) | |
52 | { | |
53 | dev_table = kzalloc(VPORT_HASH_BUCKETS * sizeof(struct hlist_head), | |
54 | GFP_KERNEL); | |
55 | if (!dev_table) | |
56 | return -ENOMEM; | |
57 | ||
58 | return 0; | |
59 | } | |
60 | ||
61 | /** | |
62 | * ovs_vport_exit - shutdown vport subsystem | |
63 | * | |
64 | * Called at module exit time to shutdown the vport subsystem. | |
65 | */ | |
66 | void ovs_vport_exit(void) | |
67 | { | |
68 | kfree(dev_table); | |
69 | } | |
70 | ||
12eb18f7 | 71 | static struct hlist_head *hash_bucket(const struct net *net, const char *name) |
ccb1352e | 72 | { |
46df7b81 | 73 | unsigned int hash = jhash(name, strlen(name), (unsigned long) net); |
ccb1352e JG |
74 | return &dev_table[hash & (VPORT_HASH_BUCKETS - 1)]; |
75 | } | |
76 | ||
62b9c8d0 TG |
77 | int ovs_vport_ops_register(struct vport_ops *ops) |
78 | { | |
79 | int err = -EEXIST; | |
80 | struct vport_ops *o; | |
81 | ||
82 | ovs_lock(); | |
83 | list_for_each_entry(o, &vport_ops_list, list) | |
84 | if (ops->type == o->type) | |
85 | goto errout; | |
86 | ||
87 | list_add_tail(&ops->list, &vport_ops_list); | |
88 | err = 0; | |
89 | errout: | |
90 | ovs_unlock(); | |
91 | return err; | |
92 | } | |
9ba559d9 | 93 | EXPORT_SYMBOL_GPL(ovs_vport_ops_register); |
62b9c8d0 TG |
94 | |
95 | void ovs_vport_ops_unregister(struct vport_ops *ops) | |
96 | { | |
97 | ovs_lock(); | |
98 | list_del(&ops->list); | |
99 | ovs_unlock(); | |
100 | } | |
9ba559d9 | 101 | EXPORT_SYMBOL_GPL(ovs_vport_ops_unregister); |
62b9c8d0 | 102 | |
ccb1352e JG |
103 | /** |
104 | * ovs_vport_locate - find a port that has already been created | |
105 | * | |
106 | * @name: name of port to find | |
107 | * | |
8e4e1713 | 108 | * Must be called with ovs or RCU read lock. |
ccb1352e | 109 | */ |
12eb18f7 | 110 | struct vport *ovs_vport_locate(const struct net *net, const char *name) |
ccb1352e | 111 | { |
46df7b81 | 112 | struct hlist_head *bucket = hash_bucket(net, name); |
ccb1352e | 113 | struct vport *vport; |
ccb1352e | 114 | |
b67bfe0d | 115 | hlist_for_each_entry_rcu(vport, bucket, hash_node) |
46df7b81 PS |
116 | if (!strcmp(name, vport->ops->get_name(vport)) && |
117 | net_eq(ovs_dp_get_net(vport->dp), net)) | |
ccb1352e JG |
118 | return vport; |
119 | ||
120 | return NULL; | |
121 | } | |
122 | ||
123 | /** | |
124 | * ovs_vport_alloc - allocate and initialize new vport | |
125 | * | |
126 | * @priv_size: Size of private data area to allocate. | |
127 | * @ops: vport device ops | |
128 | * | |
129 | * Allocate and initialize a new vport defined by @ops. The vport will contain | |
130 | * a private data area of size @priv_size that can be accessed using | |
131 | * vport_priv(). vports that are no longer needed should be released with | |
132 | * vport_free(). | |
133 | */ | |
134 | struct vport *ovs_vport_alloc(int priv_size, const struct vport_ops *ops, | |
135 | const struct vport_parms *parms) | |
136 | { | |
137 | struct vport *vport; | |
138 | size_t alloc_size; | |
139 | ||
140 | alloc_size = sizeof(struct vport); | |
141 | if (priv_size) { | |
142 | alloc_size = ALIGN(alloc_size, VPORT_ALIGN); | |
143 | alloc_size += priv_size; | |
144 | } | |
145 | ||
146 | vport = kzalloc(alloc_size, GFP_KERNEL); | |
147 | if (!vport) | |
148 | return ERR_PTR(-ENOMEM); | |
149 | ||
150 | vport->dp = parms->dp; | |
151 | vport->port_no = parms->port_no; | |
ccb1352e | 152 | vport->ops = ops; |
15eac2a7 | 153 | INIT_HLIST_NODE(&vport->dp_hash_node); |
ccb1352e | 154 | |
3791b3f6 CJ |
155 | if (ovs_vport_set_upcall_portids(vport, parms->upcall_portids)) { |
156 | kfree(vport); | |
5cd667b0 | 157 | return ERR_PTR(-EINVAL); |
3791b3f6 | 158 | } |
5cd667b0 | 159 | |
1c213bd2 | 160 | vport->percpu_stats = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats); |
f0a98ae8 DC |
161 | if (!vport->percpu_stats) { |
162 | kfree(vport); | |
ccb1352e | 163 | return ERR_PTR(-ENOMEM); |
f0a98ae8 | 164 | } |
ccb1352e | 165 | |
ccb1352e JG |
166 | return vport; |
167 | } | |
9ba559d9 | 168 | EXPORT_SYMBOL_GPL(ovs_vport_alloc); |
ccb1352e JG |
169 | |
170 | /** | |
171 | * ovs_vport_free - uninitialize and free vport | |
172 | * | |
173 | * @vport: vport to free | |
174 | * | |
175 | * Frees a vport allocated with vport_alloc() when it is no longer needed. | |
176 | * | |
177 | * The caller must ensure that an RCU grace period has passed since the last | |
178 | * time @vport was in a datapath. | |
179 | */ | |
180 | void ovs_vport_free(struct vport *vport) | |
181 | { | |
5cd667b0 AW |
182 | /* vport is freed from RCU callback or error path, Therefore |
183 | * it is safe to use raw dereference. | |
184 | */ | |
185 | kfree(rcu_dereference_raw(vport->upcall_portids)); | |
ccb1352e JG |
186 | free_percpu(vport->percpu_stats); |
187 | kfree(vport); | |
188 | } | |
9ba559d9 | 189 | EXPORT_SYMBOL_GPL(ovs_vport_free); |
62b9c8d0 TG |
190 | |
191 | static struct vport_ops *ovs_vport_lookup(const struct vport_parms *parms) | |
192 | { | |
193 | struct vport_ops *ops; | |
194 | ||
195 | list_for_each_entry(ops, &vport_ops_list, list) | |
196 | if (ops->type == parms->type) | |
197 | return ops; | |
198 | ||
199 | return NULL; | |
200 | } | |
ccb1352e JG |
201 | |
202 | /** | |
203 | * ovs_vport_add - add vport device (for kernel callers) | |
204 | * | |
205 | * @parms: Information about new vport. | |
206 | * | |
207 | * Creates a new vport with the specified configuration (which is dependent on | |
8e4e1713 | 208 | * device type). ovs_mutex must be held. |
ccb1352e JG |
209 | */ |
210 | struct vport *ovs_vport_add(const struct vport_parms *parms) | |
211 | { | |
62b9c8d0 | 212 | struct vport_ops *ops; |
ccb1352e | 213 | struct vport *vport; |
ccb1352e | 214 | |
62b9c8d0 TG |
215 | ops = ovs_vport_lookup(parms); |
216 | if (ops) { | |
217 | struct hlist_head *bucket; | |
46df7b81 | 218 | |
62b9c8d0 TG |
219 | if (!try_module_get(ops->owner)) |
220 | return ERR_PTR(-EAFNOSUPPORT); | |
ccb1352e | 221 | |
62b9c8d0 TG |
222 | vport = ops->create(parms); |
223 | if (IS_ERR(vport)) { | |
224 | module_put(ops->owner); | |
ccb1352e JG |
225 | return vport; |
226 | } | |
62b9c8d0 TG |
227 | |
228 | bucket = hash_bucket(ovs_dp_get_net(vport->dp), | |
229 | vport->ops->get_name(vport)); | |
230 | hlist_add_head_rcu(&vport->hash_node, bucket); | |
231 | return vport; | |
ccb1352e JG |
232 | } |
233 | ||
62b9c8d0 TG |
234 | /* Unlock to attempt module load and return -EAGAIN if load |
235 | * was successful as we need to restart the port addition | |
236 | * workflow. | |
237 | */ | |
238 | ovs_unlock(); | |
239 | request_module("vport-type-%d", parms->type); | |
240 | ovs_lock(); | |
ccb1352e | 241 | |
62b9c8d0 TG |
242 | if (!ovs_vport_lookup(parms)) |
243 | return ERR_PTR(-EAFNOSUPPORT); | |
244 | else | |
245 | return ERR_PTR(-EAGAIN); | |
ccb1352e JG |
246 | } |
247 | ||
248 | /** | |
249 | * ovs_vport_set_options - modify existing vport device (for kernel callers) | |
250 | * | |
251 | * @vport: vport to modify. | |
2694838d | 252 | * @options: New configuration. |
ccb1352e JG |
253 | * |
254 | * Modifies an existing device with the specified configuration (which is | |
8e4e1713 | 255 | * dependent on device type). ovs_mutex must be held. |
ccb1352e JG |
256 | */ |
257 | int ovs_vport_set_options(struct vport *vport, struct nlattr *options) | |
258 | { | |
ccb1352e JG |
259 | if (!vport->ops->set_options) |
260 | return -EOPNOTSUPP; | |
261 | return vport->ops->set_options(vport, options); | |
262 | } | |
263 | ||
264 | /** | |
265 | * ovs_vport_del - delete existing vport device | |
266 | * | |
267 | * @vport: vport to delete. | |
268 | * | |
269 | * Detaches @vport from its datapath and destroys it. It is possible to fail | |
8e4e1713 | 270 | * for reasons such as lack of memory. ovs_mutex must be held. |
ccb1352e JG |
271 | */ |
272 | void ovs_vport_del(struct vport *vport) | |
273 | { | |
8e4e1713 | 274 | ASSERT_OVSL(); |
ccb1352e JG |
275 | |
276 | hlist_del_rcu(&vport->hash_node); | |
62b9c8d0 | 277 | module_put(vport->ops->owner); |
fa2d8ff4 | 278 | vport->ops->destroy(vport); |
ccb1352e JG |
279 | } |
280 | ||
281 | /** | |
282 | * ovs_vport_get_stats - retrieve device stats | |
283 | * | |
284 | * @vport: vport from which to retrieve the stats | |
285 | * @stats: location to store stats | |
286 | * | |
287 | * Retrieves transmit, receive, and error stats for the given device. | |
288 | * | |
8e4e1713 | 289 | * Must be called with ovs_mutex or rcu_read_lock. |
ccb1352e JG |
290 | */ |
291 | void ovs_vport_get_stats(struct vport *vport, struct ovs_vport_stats *stats) | |
292 | { | |
293 | int i; | |
294 | ||
295 | memset(stats, 0, sizeof(*stats)); | |
296 | ||
297 | /* We potentially have 2 sources of stats that need to be combined: | |
298 | * those we have collected (split into err_stats and percpu_stats) from | |
299 | * set_stats() and device error stats from netdev->get_stats() (for | |
300 | * errors that happen downstream and therefore aren't reported through | |
301 | * our vport_record_error() function). | |
302 | * Stats from first source are reported by ovs (OVS_VPORT_ATTR_STATS). | |
303 | * netdev-stats can be directly read over netlink-ioctl. | |
304 | */ | |
305 | ||
e403aded LR |
306 | stats->rx_errors = atomic_long_read(&vport->err_stats.rx_errors); |
307 | stats->tx_errors = atomic_long_read(&vport->err_stats.tx_errors); | |
308 | stats->tx_dropped = atomic_long_read(&vport->err_stats.tx_dropped); | |
309 | stats->rx_dropped = atomic_long_read(&vport->err_stats.rx_dropped); | |
ccb1352e JG |
310 | |
311 | for_each_possible_cpu(i) { | |
8f84985f LR |
312 | const struct pcpu_sw_netstats *percpu_stats; |
313 | struct pcpu_sw_netstats local_stats; | |
ccb1352e JG |
314 | unsigned int start; |
315 | ||
316 | percpu_stats = per_cpu_ptr(vport->percpu_stats, i); | |
317 | ||
318 | do { | |
57a7744e | 319 | start = u64_stats_fetch_begin_irq(&percpu_stats->syncp); |
ccb1352e | 320 | local_stats = *percpu_stats; |
57a7744e | 321 | } while (u64_stats_fetch_retry_irq(&percpu_stats->syncp, start)); |
ccb1352e JG |
322 | |
323 | stats->rx_bytes += local_stats.rx_bytes; | |
324 | stats->rx_packets += local_stats.rx_packets; | |
325 | stats->tx_bytes += local_stats.tx_bytes; | |
326 | stats->tx_packets += local_stats.tx_packets; | |
327 | } | |
328 | } | |
329 | ||
330 | /** | |
331 | * ovs_vport_get_options - retrieve device options | |
332 | * | |
333 | * @vport: vport from which to retrieve the options. | |
334 | * @skb: sk_buff where options should be appended. | |
335 | * | |
336 | * Retrieves the configuration of the given device, appending an | |
337 | * %OVS_VPORT_ATTR_OPTIONS attribute that in turn contains nested | |
338 | * vport-specific attributes to @skb. | |
339 | * | |
340 | * Returns 0 if successful, -EMSGSIZE if @skb has insufficient room, or another | |
341 | * negative error code if a real error occurred. If an error occurs, @skb is | |
342 | * left unmodified. | |
343 | * | |
8e4e1713 | 344 | * Must be called with ovs_mutex or rcu_read_lock. |
ccb1352e JG |
345 | */ |
346 | int ovs_vport_get_options(const struct vport *vport, struct sk_buff *skb) | |
347 | { | |
348 | struct nlattr *nla; | |
5d963352 TG |
349 | int err; |
350 | ||
351 | if (!vport->ops->get_options) | |
352 | return 0; | |
ccb1352e JG |
353 | |
354 | nla = nla_nest_start(skb, OVS_VPORT_ATTR_OPTIONS); | |
355 | if (!nla) | |
356 | return -EMSGSIZE; | |
357 | ||
5d963352 TG |
358 | err = vport->ops->get_options(vport, skb); |
359 | if (err) { | |
360 | nla_nest_cancel(skb, nla); | |
361 | return err; | |
ccb1352e JG |
362 | } |
363 | ||
364 | nla_nest_end(skb, nla); | |
365 | return 0; | |
366 | } | |
367 | ||
5cd667b0 AW |
368 | /** |
369 | * ovs_vport_set_upcall_portids - set upcall portids of @vport. | |
370 | * | |
371 | * @vport: vport to modify. | |
372 | * @ids: new configuration, an array of port ids. | |
373 | * | |
374 | * Sets the vport's upcall_portids to @ids. | |
375 | * | |
376 | * Returns 0 if successful, -EINVAL if @ids is zero length or cannot be parsed | |
377 | * as an array of U32. | |
378 | * | |
379 | * Must be called with ovs_mutex. | |
380 | */ | |
12eb18f7 | 381 | int ovs_vport_set_upcall_portids(struct vport *vport, const struct nlattr *ids) |
5cd667b0 AW |
382 | { |
383 | struct vport_portids *old, *vport_portids; | |
384 | ||
385 | if (!nla_len(ids) || nla_len(ids) % sizeof(u32)) | |
386 | return -EINVAL; | |
387 | ||
388 | old = ovsl_dereference(vport->upcall_portids); | |
389 | ||
390 | vport_portids = kmalloc(sizeof(*vport_portids) + nla_len(ids), | |
391 | GFP_KERNEL); | |
392 | if (!vport_portids) | |
393 | return -ENOMEM; | |
394 | ||
395 | vport_portids->n_ids = nla_len(ids) / sizeof(u32); | |
396 | vport_portids->rn_ids = reciprocal_value(vport_portids->n_ids); | |
397 | nla_memcpy(vport_portids->ids, ids, nla_len(ids)); | |
398 | ||
399 | rcu_assign_pointer(vport->upcall_portids, vport_portids); | |
400 | ||
401 | if (old) | |
402 | kfree_rcu(old, rcu); | |
403 | return 0; | |
404 | } | |
405 | ||
406 | /** | |
407 | * ovs_vport_get_upcall_portids - get the upcall_portids of @vport. | |
408 | * | |
409 | * @vport: vport from which to retrieve the portids. | |
410 | * @skb: sk_buff where portids should be appended. | |
411 | * | |
412 | * Retrieves the configuration of the given vport, appending the | |
413 | * %OVS_VPORT_ATTR_UPCALL_PID attribute which is the array of upcall | |
414 | * portids to @skb. | |
415 | * | |
416 | * Returns 0 if successful, -EMSGSIZE if @skb has insufficient room. | |
417 | * If an error occurs, @skb is left unmodified. Must be called with | |
418 | * ovs_mutex or rcu_read_lock. | |
419 | */ | |
420 | int ovs_vport_get_upcall_portids(const struct vport *vport, | |
421 | struct sk_buff *skb) | |
422 | { | |
423 | struct vport_portids *ids; | |
424 | ||
425 | ids = rcu_dereference_ovsl(vport->upcall_portids); | |
426 | ||
427 | if (vport->dp->user_features & OVS_DP_F_VPORT_PIDS) | |
428 | return nla_put(skb, OVS_VPORT_ATTR_UPCALL_PID, | |
429 | ids->n_ids * sizeof(u32), (void *)ids->ids); | |
430 | else | |
431 | return nla_put_u32(skb, OVS_VPORT_ATTR_UPCALL_PID, ids->ids[0]); | |
432 | } | |
433 | ||
434 | /** | |
435 | * ovs_vport_find_upcall_portid - find the upcall portid to send upcall. | |
436 | * | |
437 | * @vport: vport from which the missed packet is received. | |
438 | * @skb: skb that the missed packet was received. | |
439 | * | |
440 | * Uses the skb_get_hash() to select the upcall portid to send the | |
441 | * upcall. | |
442 | * | |
443 | * Returns the portid of the target socket. Must be called with rcu_read_lock. | |
444 | */ | |
4e8febd0 | 445 | u32 ovs_vport_find_upcall_portid(const struct vport *vport, struct sk_buff *skb) |
5cd667b0 AW |
446 | { |
447 | struct vport_portids *ids; | |
448 | u32 ids_index; | |
449 | u32 hash; | |
450 | ||
4e8febd0 | 451 | ids = rcu_dereference(vport->upcall_portids); |
5cd667b0 AW |
452 | |
453 | if (ids->n_ids == 1 && ids->ids[0] == 0) | |
454 | return 0; | |
455 | ||
456 | hash = skb_get_hash(skb); | |
457 | ids_index = hash - ids->n_ids * reciprocal_divide(hash, ids->rn_ids); | |
458 | return ids->ids[ids_index]; | |
459 | } | |
460 | ||
ccb1352e JG |
461 | /** |
462 | * ovs_vport_receive - pass up received packet to the datapath for processing | |
463 | * | |
464 | * @vport: vport that received the packet | |
465 | * @skb: skb that was received | |
2694838d | 466 | * @tun_key: tunnel (if any) that carried packet |
ccb1352e JG |
467 | * |
468 | * Must be called with rcu_read_lock. The packet cannot be shared and | |
d176ca2a | 469 | * skb->data should point to the Ethernet header. |
ccb1352e | 470 | */ |
7d5437c7 | 471 | void ovs_vport_receive(struct vport *vport, struct sk_buff *skb, |
12eb18f7 | 472 | const struct ovs_tunnel_info *tun_info) |
ccb1352e | 473 | { |
8f84985f | 474 | struct pcpu_sw_netstats *stats; |
8c8b1b83 PS |
475 | struct sw_flow_key key; |
476 | int error; | |
ccb1352e | 477 | |
404f2f10 | 478 | stats = this_cpu_ptr(vport->percpu_stats); |
e0f0ecf3 | 479 | u64_stats_update_begin(&stats->syncp); |
ccb1352e | 480 | stats->rx_packets++; |
df8a39de JP |
481 | stats->rx_bytes += skb->len + |
482 | (skb_vlan_tag_present(skb) ? VLAN_HLEN : 0); | |
e0f0ecf3 | 483 | u64_stats_update_end(&stats->syncp); |
ccb1352e | 484 | |
83c8df26 | 485 | OVS_CB(skb)->input_vport = vport; |
f0b128c1 | 486 | OVS_CB(skb)->egress_tun_info = NULL; |
8c8b1b83 | 487 | /* Extract flow from 'skb' into 'key'. */ |
f0b128c1 | 488 | error = ovs_flow_key_extract(tun_info, skb, &key); |
8c8b1b83 PS |
489 | if (unlikely(error)) { |
490 | kfree_skb(skb); | |
491 | return; | |
492 | } | |
493 | ovs_dp_process_packet(skb, &key); | |
ccb1352e | 494 | } |
9ba559d9 | 495 | EXPORT_SYMBOL_GPL(ovs_vport_receive); |
ccb1352e JG |
496 | |
497 | /** | |
498 | * ovs_vport_send - send a packet on a device | |
499 | * | |
500 | * @vport: vport on which to send the packet | |
501 | * @skb: skb to send | |
502 | * | |
8e4e1713 | 503 | * Sends the given packet and returns the length of data sent. Either ovs |
ccb1352e JG |
504 | * lock or rcu_read_lock must be held. |
505 | */ | |
506 | int ovs_vport_send(struct vport *vport, struct sk_buff *skb) | |
507 | { | |
508 | int sent = vport->ops->send(vport, skb); | |
509 | ||
91b7514c | 510 | if (likely(sent > 0)) { |
8f84985f | 511 | struct pcpu_sw_netstats *stats; |
ccb1352e | 512 | |
404f2f10 | 513 | stats = this_cpu_ptr(vport->percpu_stats); |
ccb1352e | 514 | |
e0f0ecf3 | 515 | u64_stats_update_begin(&stats->syncp); |
ccb1352e JG |
516 | stats->tx_packets++; |
517 | stats->tx_bytes += sent; | |
e0f0ecf3 | 518 | u64_stats_update_end(&stats->syncp); |
91b7514c PS |
519 | } else if (sent < 0) { |
520 | ovs_vport_record_error(vport, VPORT_E_TX_ERROR); | |
997e068e | 521 | } else { |
91b7514c | 522 | ovs_vport_record_error(vport, VPORT_E_TX_DROPPED); |
997e068e | 523 | } |
ccb1352e JG |
524 | return sent; |
525 | } | |
526 | ||
527 | /** | |
528 | * ovs_vport_record_error - indicate device error to generic stats layer | |
529 | * | |
530 | * @vport: vport that encountered the error | |
531 | * @err_type: one of enum vport_err_type types to indicate the error type | |
532 | * | |
533 | * If using the vport generic stats layer indicate that an error of the given | |
af784163 | 534 | * type has occurred. |
ccb1352e | 535 | */ |
443cd88c SH |
536 | static void ovs_vport_record_error(struct vport *vport, |
537 | enum vport_err_type err_type) | |
ccb1352e | 538 | { |
ccb1352e JG |
539 | switch (err_type) { |
540 | case VPORT_E_RX_DROPPED: | |
e403aded | 541 | atomic_long_inc(&vport->err_stats.rx_dropped); |
ccb1352e JG |
542 | break; |
543 | ||
544 | case VPORT_E_RX_ERROR: | |
e403aded | 545 | atomic_long_inc(&vport->err_stats.rx_errors); |
ccb1352e JG |
546 | break; |
547 | ||
548 | case VPORT_E_TX_DROPPED: | |
e403aded | 549 | atomic_long_inc(&vport->err_stats.tx_dropped); |
ccb1352e JG |
550 | break; |
551 | ||
552 | case VPORT_E_TX_ERROR: | |
e403aded | 553 | atomic_long_inc(&vport->err_stats.tx_errors); |
ccb1352e | 554 | break; |
a2bf91b5 | 555 | } |
ccb1352e | 556 | |
ccb1352e | 557 | } |
aa310701 PS |
558 | |
559 | static void free_vport_rcu(struct rcu_head *rcu) | |
560 | { | |
561 | struct vport *vport = container_of(rcu, struct vport, rcu); | |
562 | ||
563 | ovs_vport_free(vport); | |
564 | } | |
565 | ||
566 | void ovs_vport_deferred_free(struct vport *vport) | |
567 | { | |
568 | if (!vport) | |
569 | return; | |
570 | ||
571 | call_rcu(&vport->rcu, free_vport_rcu); | |
572 | } | |
9ba559d9 | 573 | EXPORT_SYMBOL_GPL(ovs_vport_deferred_free); |
8f0aad6f WZ |
574 | |
575 | int ovs_tunnel_get_egress_info(struct ovs_tunnel_info *egress_tun_info, | |
576 | struct net *net, | |
577 | const struct ovs_tunnel_info *tun_info, | |
578 | u8 ipproto, | |
579 | u32 skb_mark, | |
580 | __be16 tp_src, | |
581 | __be16 tp_dst) | |
582 | { | |
583 | const struct ovs_key_ipv4_tunnel *tun_key; | |
584 | struct rtable *rt; | |
585 | struct flowi4 fl; | |
586 | ||
587 | if (unlikely(!tun_info)) | |
588 | return -EINVAL; | |
589 | ||
590 | tun_key = &tun_info->tunnel; | |
591 | ||
592 | /* Route lookup to get srouce IP address. | |
593 | * The process may need to be changed if the corresponding process | |
594 | * in vports ops changed. | |
595 | */ | |
3f4c1d87 | 596 | rt = ovs_tunnel_route_lookup(net, tun_key, skb_mark, &fl, ipproto); |
8f0aad6f WZ |
597 | if (IS_ERR(rt)) |
598 | return PTR_ERR(rt); | |
599 | ||
600 | ip_rt_put(rt); | |
601 | ||
602 | /* Generate egress_tun_info based on tun_info, | |
603 | * saddr, tp_src and tp_dst | |
604 | */ | |
605 | __ovs_flow_tun_info_init(egress_tun_info, | |
606 | fl.saddr, tun_key->ipv4_dst, | |
607 | tun_key->ipv4_tos, | |
608 | tun_key->ipv4_ttl, | |
609 | tp_src, tp_dst, | |
610 | tun_key->tun_id, | |
611 | tun_key->tun_flags, | |
612 | tun_info->options, | |
613 | tun_info->options_len); | |
614 | ||
615 | return 0; | |
616 | } | |
617 | EXPORT_SYMBOL_GPL(ovs_tunnel_get_egress_info); | |
618 | ||
619 | int ovs_vport_get_egress_tun_info(struct vport *vport, struct sk_buff *skb, | |
620 | struct ovs_tunnel_info *info) | |
621 | { | |
622 | /* get_egress_tun_info() is only implemented on tunnel ports. */ | |
623 | if (unlikely(!vport->ops->get_egress_tun_info)) | |
624 | return -EINVAL; | |
625 | ||
626 | return vport->ops->get_egress_tun_info(vport, skb, info); | |
627 | } |