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f2459fe7 | 1 | /* |
2a4999f3 | 2 | * Copyright (c) 2007-2012 Nicira Networks. |
f2459fe7 | 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 | |
f2459fe7 JG |
17 | */ |
18 | ||
f2459fe7 JG |
19 | #include <linux/etherdevice.h> |
20 | #include <linux/if.h> | |
38aeef15 | 21 | #include <linux/if_vlan.h> |
2a4999f3 | 22 | #include <linux/jhash.h> |
f2459fe7 JG |
23 | #include <linux/kernel.h> |
24 | #include <linux/list.h> | |
25 | #include <linux/mutex.h> | |
26 | #include <linux/percpu.h> | |
057dd6d2 | 27 | #include <linux/rcupdate.h> |
f2459fe7 | 28 | #include <linux/rtnetlink.h> |
3fbd517a | 29 | #include <linux/compat.h> |
e90b1cf9 | 30 | #include <linux/version.h> |
2a4999f3 | 31 | #include <net/net_namespace.h> |
f2459fe7 | 32 | |
2a4999f3 | 33 | #include "datapath.h" |
f2459fe7 | 34 | #include "vport.h" |
b19e8815 | 35 | #include "vport-internal_dev.h" |
f2459fe7 | 36 | |
5953c70e JG |
37 | /* List of statically compiled vport implementations. Don't forget to also |
38 | * add yours to the list at the bottom of vport.h. */ | |
b279fccf | 39 | static const struct vport_ops *base_vport_ops_list[] = { |
850b6b3b JG |
40 | &ovs_netdev_vport_ops, |
41 | &ovs_internal_vport_ops, | |
42 | &ovs_patch_vport_ops, | |
43 | &ovs_gre_vport_ops, | |
e90b1cf9 | 44 | #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,26) |
850b6b3b | 45 | &ovs_capwap_vport_ops, |
e90b1cf9 | 46 | #endif |
f2459fe7 JG |
47 | }; |
48 | ||
49 | static const struct vport_ops **vport_ops_list; | |
50 | static int n_vport_types; | |
51 | ||
057dd6d2 | 52 | /* Protected by RCU read lock for reading, RTNL lock for writing. */ |
f2459fe7 JG |
53 | static struct hlist_head *dev_table; |
54 | #define VPORT_HASH_BUCKETS 1024 | |
55 | ||
f2459fe7 | 56 | /** |
850b6b3b | 57 | * ovs_vport_init - initialize vport subsystem |
f2459fe7 JG |
58 | * |
59 | * Called at module load time to initialize the vport subsystem and any | |
60 | * compiled in vport types. | |
61 | */ | |
850b6b3b | 62 | int ovs_vport_init(void) |
f2459fe7 JG |
63 | { |
64 | int err; | |
65 | int i; | |
66 | ||
67 | dev_table = kzalloc(VPORT_HASH_BUCKETS * sizeof(struct hlist_head), | |
68 | GFP_KERNEL); | |
69 | if (!dev_table) { | |
70 | err = -ENOMEM; | |
71 | goto error; | |
72 | } | |
73 | ||
74 | vport_ops_list = kmalloc(ARRAY_SIZE(base_vport_ops_list) * | |
75 | sizeof(struct vport_ops *), GFP_KERNEL); | |
76 | if (!vport_ops_list) { | |
77 | err = -ENOMEM; | |
78 | goto error_dev_table; | |
79 | } | |
80 | ||
81 | for (i = 0; i < ARRAY_SIZE(base_vport_ops_list); i++) { | |
b279fccf | 82 | const struct vport_ops *new_ops = base_vport_ops_list[i]; |
f2459fe7 | 83 | |
f2459fe7 JG |
84 | if (new_ops->init) |
85 | err = new_ops->init(); | |
86 | else | |
87 | err = 0; | |
88 | ||
89 | if (!err) | |
90 | vport_ops_list[n_vport_types++] = new_ops; | |
91 | else if (new_ops->flags & VPORT_F_REQUIRED) { | |
850b6b3b | 92 | ovs_vport_exit(); |
f2459fe7 JG |
93 | goto error; |
94 | } | |
95 | } | |
96 | ||
97 | return 0; | |
98 | ||
99 | error_dev_table: | |
100 | kfree(dev_table); | |
101 | error: | |
102 | return err; | |
103 | } | |
104 | ||
f2459fe7 | 105 | /** |
850b6b3b | 106 | * ovs_vport_exit - shutdown vport subsystem |
f2459fe7 JG |
107 | * |
108 | * Called at module exit time to shutdown the vport subsystem and any | |
109 | * initialized vport types. | |
110 | */ | |
850b6b3b | 111 | void ovs_vport_exit(void) |
f2459fe7 JG |
112 | { |
113 | int i; | |
114 | ||
f2459fe7 JG |
115 | for (i = 0; i < n_vport_types; i++) { |
116 | if (vport_ops_list[i]->exit) | |
117 | vport_ops_list[i]->exit(); | |
118 | } | |
119 | ||
120 | kfree(vport_ops_list); | |
121 | kfree(dev_table); | |
122 | } | |
123 | ||
2a4999f3 | 124 | static struct hlist_head *hash_bucket(struct net *net, const char *name) |
f2459fe7 | 125 | { |
2a4999f3 | 126 | unsigned int hash = jhash(name, strlen(name), (unsigned long) net); |
f2459fe7 JG |
127 | return &dev_table[hash & (VPORT_HASH_BUCKETS - 1)]; |
128 | } | |
129 | ||
130 | /** | |
850b6b3b | 131 | * ovs_vport_locate - find a port that has already been created |
f2459fe7 JG |
132 | * |
133 | * @name: name of port to find | |
134 | * | |
057dd6d2 | 135 | * Must be called with RTNL or RCU read lock. |
f2459fe7 | 136 | */ |
2a4999f3 | 137 | struct vport *ovs_vport_locate(struct net *net, const char *name) |
f2459fe7 | 138 | { |
2a4999f3 | 139 | struct hlist_head *bucket = hash_bucket(net, name); |
f2459fe7 JG |
140 | struct vport *vport; |
141 | struct hlist_node *node; | |
142 | ||
057dd6d2 | 143 | hlist_for_each_entry_rcu(vport, node, bucket, hash_node) |
2a4999f3 PS |
144 | if (!strcmp(name, vport->ops->get_name(vport)) && |
145 | net_eq(ovs_dp_get_net(vport->dp), net)) | |
057dd6d2 | 146 | return vport; |
f2459fe7 | 147 | |
057dd6d2 | 148 | return NULL; |
f2459fe7 JG |
149 | } |
150 | ||
e779d8d9 BP |
151 | static void release_vport(struct kobject *kobj) |
152 | { | |
153 | struct vport *p = container_of(kobj, struct vport, kobj); | |
154 | kfree(p); | |
155 | } | |
156 | ||
157 | static struct kobj_type brport_ktype = { | |
158 | #ifdef CONFIG_SYSFS | |
850b6b3b | 159 | .sysfs_ops = &ovs_brport_sysfs_ops, |
e779d8d9 BP |
160 | #endif |
161 | .release = release_vport | |
162 | }; | |
163 | ||
f2459fe7 | 164 | /** |
850b6b3b | 165 | * ovs_vport_alloc - allocate and initialize new vport |
f2459fe7 JG |
166 | * |
167 | * @priv_size: Size of private data area to allocate. | |
168 | * @ops: vport device ops | |
169 | * | |
170 | * Allocate and initialize a new vport defined by @ops. The vport will contain | |
171 | * a private data area of size @priv_size that can be accessed using | |
172 | * vport_priv(). vports that are no longer needed should be released with | |
850b6b3b | 173 | * ovs_vport_free(). |
f2459fe7 | 174 | */ |
850b6b3b JG |
175 | struct vport *ovs_vport_alloc(int priv_size, const struct vport_ops *ops, |
176 | const struct vport_parms *parms) | |
f2459fe7 JG |
177 | { |
178 | struct vport *vport; | |
179 | size_t alloc_size; | |
180 | ||
181 | alloc_size = sizeof(struct vport); | |
182 | if (priv_size) { | |
183 | alloc_size = ALIGN(alloc_size, VPORT_ALIGN); | |
184 | alloc_size += priv_size; | |
185 | } | |
186 | ||
187 | vport = kzalloc(alloc_size, GFP_KERNEL); | |
188 | if (!vport) | |
189 | return ERR_PTR(-ENOMEM); | |
190 | ||
e779d8d9 BP |
191 | vport->dp = parms->dp; |
192 | vport->port_no = parms->port_no; | |
b063d9f0 | 193 | vport->upcall_pid = parms->upcall_pid; |
f2459fe7 | 194 | vport->ops = ops; |
95b1d73a | 195 | INIT_HLIST_NODE(&vport->dp_hash_node); |
f2459fe7 | 196 | |
e779d8d9 BP |
197 | /* Initialize kobject for bridge. This will be added as |
198 | * /sys/class/net/<devname>/brport later, if sysfs is enabled. */ | |
199 | vport->kobj.kset = NULL; | |
200 | kobject_init(&vport->kobj, &brport_ktype); | |
201 | ||
f613a0d7 | 202 | vport->percpu_stats = alloc_percpu(struct vport_percpu_stats); |
9697e433 DC |
203 | if (!vport->percpu_stats) { |
204 | kfree(vport); | |
f613a0d7 | 205 | return ERR_PTR(-ENOMEM); |
9697e433 | 206 | } |
f2459fe7 | 207 | |
f613a0d7 | 208 | spin_lock_init(&vport->stats_lock); |
f2459fe7 JG |
209 | |
210 | return vport; | |
211 | } | |
212 | ||
213 | /** | |
850b6b3b | 214 | * ovs_vport_free - uninitialize and free vport |
f2459fe7 JG |
215 | * |
216 | * @vport: vport to free | |
217 | * | |
850b6b3b | 218 | * Frees a vport allocated with ovs_vport_alloc() when it is no longer needed. |
057dd6d2 BP |
219 | * |
220 | * The caller must ensure that an RCU grace period has passed since the last | |
221 | * time @vport was in a datapath. | |
f2459fe7 | 222 | */ |
850b6b3b | 223 | void ovs_vport_free(struct vport *vport) |
f2459fe7 | 224 | { |
f613a0d7 | 225 | free_percpu(vport->percpu_stats); |
f2459fe7 | 226 | |
e779d8d9 | 227 | kobject_put(&vport->kobj); |
f2459fe7 JG |
228 | } |
229 | ||
230 | /** | |
850b6b3b | 231 | * ovs_vport_add - add vport device (for kernel callers) |
f2459fe7 | 232 | * |
94903c98 | 233 | * @parms: Information about new vport. |
f2459fe7 | 234 | * |
7237e4f4 | 235 | * Creates a new vport with the specified configuration (which is dependent on |
91dbd46c | 236 | * device type). RTNL lock must be held. |
f2459fe7 | 237 | */ |
850b6b3b | 238 | struct vport *ovs_vport_add(const struct vport_parms *parms) |
f2459fe7 JG |
239 | { |
240 | struct vport *vport; | |
241 | int err = 0; | |
242 | int i; | |
243 | ||
244 | ASSERT_RTNL(); | |
f2459fe7 JG |
245 | |
246 | for (i = 0; i < n_vport_types; i++) { | |
c283069c | 247 | if (vport_ops_list[i]->type == parms->type) { |
2a4999f3 PS |
248 | struct hlist_head *bucket; |
249 | ||
94903c98 | 250 | vport = vport_ops_list[i]->create(parms); |
f2459fe7 JG |
251 | if (IS_ERR(vport)) { |
252 | err = PTR_ERR(vport); | |
253 | goto out; | |
254 | } | |
255 | ||
2a4999f3 PS |
256 | bucket = hash_bucket(ovs_dp_get_net(vport->dp), |
257 | vport->ops->get_name(vport)); | |
258 | hlist_add_head_rcu(&vport->hash_node, bucket); | |
f2459fe7 JG |
259 | return vport; |
260 | } | |
261 | } | |
262 | ||
263 | err = -EAFNOSUPPORT; | |
264 | ||
265 | out: | |
266 | return ERR_PTR(err); | |
267 | } | |
268 | ||
269 | /** | |
850b6b3b | 270 | * ovs_vport_set_options - modify existing vport device (for kernel callers) |
f2459fe7 JG |
271 | * |
272 | * @vport: vport to modify. | |
c3827f61 | 273 | * @port: New configuration. |
f2459fe7 JG |
274 | * |
275 | * Modifies an existing device with the specified configuration (which is | |
c19e6535 | 276 | * dependent on device type). RTNL lock must be held. |
f2459fe7 | 277 | */ |
850b6b3b | 278 | int ovs_vport_set_options(struct vport *vport, struct nlattr *options) |
f2459fe7 JG |
279 | { |
280 | ASSERT_RTNL(); | |
f2459fe7 | 281 | |
c19e6535 | 282 | if (!vport->ops->set_options) |
f2459fe7 | 283 | return -EOPNOTSUPP; |
c19e6535 | 284 | return vport->ops->set_options(vport, options); |
f2459fe7 JG |
285 | } |
286 | ||
287 | /** | |
850b6b3b | 288 | * ovs_vport_del - delete existing vport device |
f2459fe7 JG |
289 | * |
290 | * @vport: vport to delete. | |
291 | * | |
7237e4f4 | 292 | * Detaches @vport from its datapath and destroys it. It is possible to fail |
057dd6d2 | 293 | * for reasons such as lack of memory. RTNL lock must be held. |
f2459fe7 | 294 | */ |
850b6b3b | 295 | void ovs_vport_del(struct vport *vport) |
f2459fe7 JG |
296 | { |
297 | ASSERT_RTNL(); | |
f2459fe7 | 298 | |
057dd6d2 | 299 | hlist_del_rcu(&vport->hash_node); |
f2459fe7 | 300 | |
3544358a | 301 | vport->ops->destroy(vport); |
f2459fe7 JG |
302 | } |
303 | ||
f2459fe7 | 304 | /** |
850b6b3b | 305 | * ovs_vport_set_addr - set device Ethernet address (for kernel callers) |
f2459fe7 JG |
306 | * |
307 | * @vport: vport on which to set Ethernet address. | |
308 | * @addr: New address. | |
309 | * | |
310 | * Sets the Ethernet address of the given device. Some devices may not support | |
311 | * setting the Ethernet address, in which case the result will always be | |
312 | * -EOPNOTSUPP. RTNL lock must be held. | |
313 | */ | |
850b6b3b | 314 | int ovs_vport_set_addr(struct vport *vport, const unsigned char *addr) |
f2459fe7 JG |
315 | { |
316 | ASSERT_RTNL(); | |
317 | ||
318 | if (!is_valid_ether_addr(addr)) | |
319 | return -EADDRNOTAVAIL; | |
320 | ||
321 | if (vport->ops->set_addr) | |
322 | return vport->ops->set_addr(vport, addr); | |
323 | else | |
324 | return -EOPNOTSUPP; | |
325 | } | |
326 | ||
780e6207 | 327 | /** |
850b6b3b | 328 | * ovs_vport_set_stats - sets offset device stats |
780e6207 JG |
329 | * |
330 | * @vport: vport on which to set stats | |
331 | * @stats: stats to set | |
332 | * | |
333 | * Provides a set of transmit, receive, and error stats to be added as an | |
334 | * offset to the collect data when stats are retreived. Some devices may not | |
335 | * support setting the stats, in which case the result will always be | |
ed099e92 BP |
336 | * -EOPNOTSUPP. |
337 | * | |
338 | * Must be called with RTNL lock. | |
780e6207 | 339 | */ |
850b6b3b | 340 | void ovs_vport_set_stats(struct vport *vport, struct ovs_vport_stats *stats) |
780e6207 JG |
341 | { |
342 | ASSERT_RTNL(); | |
343 | ||
f613a0d7 PS |
344 | spin_lock_bh(&vport->stats_lock); |
345 | vport->offset_stats = *stats; | |
346 | spin_unlock_bh(&vport->stats_lock); | |
780e6207 JG |
347 | } |
348 | ||
780e6207 | 349 | /** |
850b6b3b | 350 | * ovs_vport_get_stats - retrieve device stats |
780e6207 JG |
351 | * |
352 | * @vport: vport from which to retrieve the stats | |
353 | * @stats: location to store stats | |
354 | * | |
355 | * Retrieves transmit, receive, and error stats for the given device. | |
ed099e92 BP |
356 | * |
357 | * Must be called with RTNL lock or rcu_read_lock. | |
780e6207 | 358 | */ |
850b6b3b | 359 | void ovs_vport_get_stats(struct vport *vport, struct ovs_vport_stats *stats) |
780e6207 | 360 | { |
bc22fc3e | 361 | int i; |
780e6207 | 362 | |
bc22fc3e BP |
363 | /* We potentially have 3 sources of stats that need to be |
364 | * combined: those we have collected (split into err_stats and | |
365 | * percpu_stats), offset_stats from set_stats(), and device | |
f613a0d7 | 366 | * error stats from netdev->get_stats() (for errors that happen |
bc22fc3e | 367 | * downstream and therefore aren't reported through our |
f613a0d7 PS |
368 | * vport_record_error() function). |
369 | * Stats from first two sources are merged and reported by ovs over | |
370 | * OVS_VPORT_ATTR_STATS. | |
371 | * netdev-stats can be directly read over netlink-ioctl. | |
372 | */ | |
780e6207 | 373 | |
bc22fc3e | 374 | spin_lock_bh(&vport->stats_lock); |
780e6207 | 375 | |
bc22fc3e | 376 | *stats = vport->offset_stats; |
780e6207 | 377 | |
bc22fc3e BP |
378 | stats->rx_errors += vport->err_stats.rx_errors; |
379 | stats->tx_errors += vport->err_stats.tx_errors; | |
380 | stats->tx_dropped += vport->err_stats.tx_dropped; | |
381 | stats->rx_dropped += vport->err_stats.rx_dropped; | |
780e6207 | 382 | |
bc22fc3e | 383 | spin_unlock_bh(&vport->stats_lock); |
780e6207 | 384 | |
bc22fc3e BP |
385 | for_each_possible_cpu(i) { |
386 | const struct vport_percpu_stats *percpu_stats; | |
387 | struct vport_percpu_stats local_stats; | |
821cb9fa | 388 | unsigned int start; |
780e6207 | 389 | |
bc22fc3e | 390 | percpu_stats = per_cpu_ptr(vport->percpu_stats, i); |
38c6ecbc | 391 | |
bc22fc3e | 392 | do { |
821cb9fa | 393 | start = u64_stats_fetch_begin_bh(&percpu_stats->sync); |
bc22fc3e | 394 | local_stats = *percpu_stats; |
821cb9fa | 395 | } while (u64_stats_fetch_retry_bh(&percpu_stats->sync, start)); |
38c6ecbc | 396 | |
bc22fc3e BP |
397 | stats->rx_bytes += local_stats.rx_bytes; |
398 | stats->rx_packets += local_stats.rx_packets; | |
399 | stats->tx_bytes += local_stats.tx_bytes; | |
400 | stats->tx_packets += local_stats.tx_packets; | |
265d5020 | 401 | } |
780e6207 JG |
402 | } |
403 | ||
dd851cbb | 404 | /** |
850b6b3b | 405 | * ovs_vport_get_options - retrieve device options |
dd851cbb | 406 | * |
c19e6535 BP |
407 | * @vport: vport from which to retrieve the options. |
408 | * @skb: sk_buff where options should be appended. | |
dd851cbb | 409 | * |
c19e6535 | 410 | * Retrieves the configuration of the given device, appending an |
df2c07f4 | 411 | * %OVS_VPORT_ATTR_OPTIONS attribute that in turn contains nested |
ed099e92 | 412 | * vport-specific attributes to @skb. |
c19e6535 BP |
413 | * |
414 | * Returns 0 if successful, -EMSGSIZE if @skb has insufficient room, or another | |
f0fef760 BP |
415 | * negative error code if a real error occurred. If an error occurs, @skb is |
416 | * left unmodified. | |
ed099e92 BP |
417 | * |
418 | * Must be called with RTNL lock or rcu_read_lock. | |
dd851cbb | 419 | */ |
850b6b3b | 420 | int ovs_vport_get_options(const struct vport *vport, struct sk_buff *skb) |
dd851cbb | 421 | { |
c19e6535 BP |
422 | struct nlattr *nla; |
423 | ||
df2c07f4 | 424 | nla = nla_nest_start(skb, OVS_VPORT_ATTR_OPTIONS); |
c19e6535 BP |
425 | if (!nla) |
426 | return -EMSGSIZE; | |
427 | ||
428 | if (vport->ops->get_options) { | |
429 | int err = vport->ops->get_options(vport, skb); | |
f0fef760 BP |
430 | if (err) { |
431 | nla_nest_cancel(skb, nla); | |
c19e6535 | 432 | return err; |
f0fef760 | 433 | } |
c19e6535 BP |
434 | } |
435 | ||
436 | nla_nest_end(skb, nla); | |
437 | return 0; | |
dd851cbb JP |
438 | } |
439 | ||
f2459fe7 | 440 | /** |
850b6b3b | 441 | * ovs_vport_receive - pass up received packet to the datapath for processing |
f2459fe7 JG |
442 | * |
443 | * @vport: vport that received the packet | |
444 | * @skb: skb that was received | |
445 | * | |
8819fac7 JG |
446 | * Must be called with rcu_read_lock. The packet cannot be shared and |
447 | * skb->data should point to the Ethernet header. The caller must have already | |
448 | * called compute_ip_summed() to initialize the checksumming fields. | |
f2459fe7 | 449 | */ |
850b6b3b | 450 | void ovs_vport_receive(struct vport *vport, struct sk_buff *skb) |
f2459fe7 | 451 | { |
f613a0d7 | 452 | struct vport_percpu_stats *stats; |
f2459fe7 | 453 | |
f613a0d7 | 454 | stats = per_cpu_ptr(vport->percpu_stats, smp_processor_id()); |
38c6ecbc | 455 | |
821cb9fa | 456 | u64_stats_update_begin(&stats->sync); |
f613a0d7 PS |
457 | stats->rx_packets++; |
458 | stats->rx_bytes += skb->len; | |
821cb9fa | 459 | u64_stats_update_end(&stats->sync); |
f2459fe7 | 460 | |
3976f6d5 JG |
461 | if (!(vport->ops->flags & VPORT_F_FLOW)) |
462 | OVS_CB(skb)->flow = NULL; | |
463 | ||
f2459fe7 JG |
464 | if (!(vport->ops->flags & VPORT_F_TUN_ID)) |
465 | OVS_CB(skb)->tun_id = 0; | |
466 | ||
850b6b3b | 467 | ovs_dp_process_received_packet(vport, skb); |
f2459fe7 JG |
468 | } |
469 | ||
470 | /** | |
850b6b3b | 471 | * ovs_vport_send - send a packet on a device |
f2459fe7 JG |
472 | * |
473 | * @vport: vport on which to send the packet | |
474 | * @skb: skb to send | |
475 | * | |
476 | * Sends the given packet and returns the length of data sent. Either RTNL | |
477 | * lock or rcu_read_lock must be held. | |
478 | */ | |
850b6b3b | 479 | int ovs_vport_send(struct vport *vport, struct sk_buff *skb) |
f2459fe7 | 480 | { |
24b019f8 | 481 | int sent = vport->ops->send(vport, skb); |
f2459fe7 | 482 | |
58d01ad9 PS |
483 | if (likely(sent)) { |
484 | struct vport_percpu_stats *stats; | |
38c6ecbc | 485 | |
58d01ad9 | 486 | stats = per_cpu_ptr(vport->percpu_stats, smp_processor_id()); |
f2459fe7 | 487 | |
821cb9fa | 488 | u64_stats_update_begin(&stats->sync); |
58d01ad9 PS |
489 | stats->tx_packets++; |
490 | stats->tx_bytes += sent; | |
821cb9fa | 491 | u64_stats_update_end(&stats->sync); |
58d01ad9 | 492 | } |
55574bb0 | 493 | return sent; |
f2459fe7 JG |
494 | } |
495 | ||
496 | /** | |
850b6b3b | 497 | * ovs_vport_record_error - indicate device error to generic stats layer |
f2459fe7 JG |
498 | * |
499 | * @vport: vport that encountered the error | |
500 | * @err_type: one of enum vport_err_type types to indicate the error type | |
501 | * | |
502 | * If using the vport generic stats layer indicate that an error of the given | |
503 | * type has occured. | |
504 | */ | |
850b6b3b | 505 | void ovs_vport_record_error(struct vport *vport, enum vport_err_type err_type) |
f2459fe7 | 506 | { |
e9141eec | 507 | spin_lock(&vport->stats_lock); |
f2459fe7 | 508 | |
f613a0d7 PS |
509 | switch (err_type) { |
510 | case VPORT_E_RX_DROPPED: | |
511 | vport->err_stats.rx_dropped++; | |
512 | break; | |
f2459fe7 | 513 | |
f613a0d7 PS |
514 | case VPORT_E_RX_ERROR: |
515 | vport->err_stats.rx_errors++; | |
516 | break; | |
f2459fe7 | 517 | |
f613a0d7 PS |
518 | case VPORT_E_TX_DROPPED: |
519 | vport->err_stats.tx_dropped++; | |
520 | break; | |
f2459fe7 | 521 | |
f613a0d7 PS |
522 | case VPORT_E_TX_ERROR: |
523 | vport->err_stats.tx_errors++; | |
524 | break; | |
525 | }; | |
f2459fe7 | 526 | |
e9141eec | 527 | spin_unlock(&vport->stats_lock); |
f2459fe7 | 528 | } |