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Commit | Line | Data |
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fceaf24a | 1 | /* |
fceaf24a HJ |
2 | * Copyright (c) 2009, Microsoft Corporation. |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms and conditions of the GNU General Public License, | |
6 | * version 2, as published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope it will be useful, but WITHOUT | |
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
11 | * more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License along with | |
adf8d3ff | 14 | * this program; if not, see <http://www.gnu.org/licenses/>. |
fceaf24a HJ |
15 | * |
16 | * Authors: | |
d0e94d17 | 17 | * Haiyang Zhang <haiyangz@microsoft.com> |
fceaf24a | 18 | * Hank Janssen <hjanssen@microsoft.com> |
fceaf24a | 19 | */ |
eb335bc4 HJ |
20 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
21 | ||
5654e932 | 22 | #include <linux/kernel.h> |
0c3b7b2f S |
23 | #include <linux/sched.h> |
24 | #include <linux/wait.h> | |
0ffa63b0 | 25 | #include <linux/mm.h> |
b4362c9c | 26 | #include <linux/delay.h> |
21a80820 | 27 | #include <linux/io.h> |
5a0e3ad6 | 28 | #include <linux/slab.h> |
d9871158 | 29 | #include <linux/netdevice.h> |
f157e78d | 30 | #include <linux/if_ether.h> |
d6472302 | 31 | #include <linux/vmalloc.h> |
c25aaf81 | 32 | #include <asm/sync_bitops.h> |
3f335ea2 | 33 | |
5ca7252a | 34 | #include "hyperv_net.h" |
fceaf24a | 35 | |
84bf9cef KS |
36 | /* |
37 | * Switch the data path from the synthetic interface to the VF | |
38 | * interface. | |
39 | */ | |
0a1275ca | 40 | void netvsc_switch_datapath(struct net_device *ndev, bool vf) |
84bf9cef | 41 | { |
3d541ac5 VK |
42 | struct net_device_context *net_device_ctx = netdev_priv(ndev); |
43 | struct hv_device *dev = net_device_ctx->device_ctx; | |
0a1275ca VK |
44 | struct netvsc_device *nv_dev = net_device_ctx->nvdev; |
45 | struct nvsp_message *init_pkt = &nv_dev->channel_init_pkt; | |
84bf9cef KS |
46 | |
47 | memset(init_pkt, 0, sizeof(struct nvsp_message)); | |
48 | init_pkt->hdr.msg_type = NVSP_MSG4_TYPE_SWITCH_DATA_PATH; | |
49 | if (vf) | |
50 | init_pkt->msg.v4_msg.active_dp.active_datapath = | |
51 | NVSP_DATAPATH_VF; | |
52 | else | |
53 | init_pkt->msg.v4_msg.active_dp.active_datapath = | |
54 | NVSP_DATAPATH_SYNTHETIC; | |
55 | ||
56 | vmbus_sendpacket(dev->channel, init_pkt, | |
57 | sizeof(struct nvsp_message), | |
58 | (unsigned long)init_pkt, | |
59 | VM_PKT_DATA_INBAND, 0); | |
53fa1a6f HZ |
60 | |
61 | net_device_ctx->datapath = vf; | |
84bf9cef KS |
62 | } |
63 | ||
88098834 | 64 | static struct netvsc_device *alloc_net_device(void) |
fceaf24a | 65 | { |
85799a37 | 66 | struct netvsc_device *net_device; |
fceaf24a | 67 | |
85799a37 HZ |
68 | net_device = kzalloc(sizeof(struct netvsc_device), GFP_KERNEL); |
69 | if (!net_device) | |
fceaf24a HJ |
70 | return NULL; |
71 | ||
b8b835a8 | 72 | net_device->chan_table[0].mrc.buf |
73 | = vzalloc(NETVSC_RECVSLOT_MAX * sizeof(struct recv_comp_data)); | |
c0b558e5 | 74 | |
dc5cd894 | 75 | init_waitqueue_head(&net_device->wait_drain); |
c38b9c71 | 76 | net_device->destroy = false; |
84bf9cef | 77 | atomic_set(&net_device->open_cnt, 0); |
7c3877f2 HZ |
78 | net_device->max_pkt = RNDIS_MAX_PKT_DEFAULT; |
79 | net_device->pkt_align = RNDIS_PKT_ALIGN_DEFAULT; | |
fd612602 | 80 | init_completion(&net_device->channel_init_wait); |
732e4985 | 81 | init_waitqueue_head(&net_device->subchan_open); |
7c3877f2 | 82 | |
85799a37 | 83 | return net_device; |
fceaf24a HJ |
84 | } |
85 | ||
545a8e79 | 86 | static void free_netvsc_device(struct rcu_head *head) |
f90251c8 | 87 | { |
545a8e79 | 88 | struct netvsc_device *nvdev |
89 | = container_of(head, struct netvsc_device, rcu); | |
c0b558e5 HZ |
90 | int i; |
91 | ||
92 | for (i = 0; i < VRSS_CHANNEL_MAX; i++) | |
b8b835a8 | 93 | vfree(nvdev->chan_table[i].mrc.buf); |
c0b558e5 | 94 | |
f90251c8 HZ |
95 | kfree(nvdev); |
96 | } | |
97 | ||
545a8e79 | 98 | static void free_netvsc_device_rcu(struct netvsc_device *nvdev) |
99 | { | |
100 | call_rcu(&nvdev->rcu, free_netvsc_device); | |
101 | } | |
fceaf24a | 102 | |
7a2a0a84 | 103 | static void netvsc_destroy_buf(struct hv_device *device) |
ec91cd09 HZ |
104 | { |
105 | struct nvsp_message *revoke_packet; | |
3d541ac5 | 106 | struct net_device *ndev = hv_get_drvdata(device); |
2625466d | 107 | struct netvsc_device *net_device = net_device_to_netvsc_device(ndev); |
7a2a0a84 | 108 | int ret; |
ec91cd09 HZ |
109 | |
110 | /* | |
111 | * If we got a section count, it means we received a | |
112 | * SendReceiveBufferComplete msg (ie sent | |
113 | * NvspMessage1TypeSendReceiveBuffer msg) therefore, we need | |
114 | * to send a revoke msg here | |
115 | */ | |
116 | if (net_device->recv_section_cnt) { | |
117 | /* Send the revoke receive buffer */ | |
118 | revoke_packet = &net_device->revoke_packet; | |
119 | memset(revoke_packet, 0, sizeof(struct nvsp_message)); | |
120 | ||
121 | revoke_packet->hdr.msg_type = | |
122 | NVSP_MSG1_TYPE_REVOKE_RECV_BUF; | |
123 | revoke_packet->msg.v1_msg. | |
124 | revoke_recv_buf.id = NETVSC_RECEIVE_BUFFER_ID; | |
125 | ||
3d541ac5 | 126 | ret = vmbus_sendpacket(device->channel, |
ec91cd09 HZ |
127 | revoke_packet, |
128 | sizeof(struct nvsp_message), | |
129 | (unsigned long)revoke_packet, | |
130 | VM_PKT_DATA_INBAND, 0); | |
73e64fa4 S |
131 | /* If the failure is because the channel is rescinded; |
132 | * ignore the failure since we cannot send on a rescinded | |
133 | * channel. This would allow us to properly cleanup | |
134 | * even when the channel is rescinded. | |
135 | */ | |
136 | if (device->channel->rescind) | |
137 | ret = 0; | |
ec91cd09 HZ |
138 | /* |
139 | * If we failed here, we might as well return and | |
140 | * have a leak rather than continue and a bugchk | |
141 | */ | |
142 | if (ret != 0) { | |
d9871158 | 143 | netdev_err(ndev, "unable to send " |
c909ebbd | 144 | "revoke receive buffer to netvsp\n"); |
7a2a0a84 | 145 | return; |
ec91cd09 HZ |
146 | } |
147 | } | |
148 | ||
149 | /* Teardown the gpadl on the vsp end */ | |
150 | if (net_device->recv_buf_gpadl_handle) { | |
3d541ac5 VK |
151 | ret = vmbus_teardown_gpadl(device->channel, |
152 | net_device->recv_buf_gpadl_handle); | |
ec91cd09 HZ |
153 | |
154 | /* If we failed here, we might as well return and have a leak | |
155 | * rather than continue and a bugchk | |
156 | */ | |
157 | if (ret != 0) { | |
d9871158 | 158 | netdev_err(ndev, |
c909ebbd | 159 | "unable to teardown receive buffer's gpadl\n"); |
7a2a0a84 | 160 | return; |
ec91cd09 HZ |
161 | } |
162 | net_device->recv_buf_gpadl_handle = 0; | |
163 | } | |
164 | ||
165 | if (net_device->recv_buf) { | |
166 | /* Free up the receive buffer */ | |
b679ef73 | 167 | vfree(net_device->recv_buf); |
ec91cd09 HZ |
168 | net_device->recv_buf = NULL; |
169 | } | |
170 | ||
171 | if (net_device->recv_section) { | |
172 | net_device->recv_section_cnt = 0; | |
173 | kfree(net_device->recv_section); | |
174 | net_device->recv_section = NULL; | |
175 | } | |
176 | ||
c25aaf81 KS |
177 | /* Deal with the send buffer we may have setup. |
178 | * If we got a send section size, it means we received a | |
c51ed182 HZ |
179 | * NVSP_MSG1_TYPE_SEND_SEND_BUF_COMPLETE msg (ie sent |
180 | * NVSP_MSG1_TYPE_SEND_SEND_BUF msg) therefore, we need | |
c25aaf81 KS |
181 | * to send a revoke msg here |
182 | */ | |
183 | if (net_device->send_section_size) { | |
184 | /* Send the revoke receive buffer */ | |
185 | revoke_packet = &net_device->revoke_packet; | |
186 | memset(revoke_packet, 0, sizeof(struct nvsp_message)); | |
187 | ||
188 | revoke_packet->hdr.msg_type = | |
189 | NVSP_MSG1_TYPE_REVOKE_SEND_BUF; | |
c51ed182 HZ |
190 | revoke_packet->msg.v1_msg.revoke_send_buf.id = |
191 | NETVSC_SEND_BUFFER_ID; | |
c25aaf81 | 192 | |
3d541ac5 | 193 | ret = vmbus_sendpacket(device->channel, |
c25aaf81 KS |
194 | revoke_packet, |
195 | sizeof(struct nvsp_message), | |
196 | (unsigned long)revoke_packet, | |
197 | VM_PKT_DATA_INBAND, 0); | |
73e64fa4 S |
198 | |
199 | /* If the failure is because the channel is rescinded; | |
200 | * ignore the failure since we cannot send on a rescinded | |
201 | * channel. This would allow us to properly cleanup | |
202 | * even when the channel is rescinded. | |
203 | */ | |
204 | if (device->channel->rescind) | |
205 | ret = 0; | |
206 | ||
c25aaf81 KS |
207 | /* If we failed here, we might as well return and |
208 | * have a leak rather than continue and a bugchk | |
209 | */ | |
210 | if (ret != 0) { | |
211 | netdev_err(ndev, "unable to send " | |
212 | "revoke send buffer to netvsp\n"); | |
7a2a0a84 | 213 | return; |
c25aaf81 KS |
214 | } |
215 | } | |
216 | /* Teardown the gpadl on the vsp end */ | |
217 | if (net_device->send_buf_gpadl_handle) { | |
3d541ac5 | 218 | ret = vmbus_teardown_gpadl(device->channel, |
c25aaf81 KS |
219 | net_device->send_buf_gpadl_handle); |
220 | ||
221 | /* If we failed here, we might as well return and have a leak | |
222 | * rather than continue and a bugchk | |
223 | */ | |
224 | if (ret != 0) { | |
225 | netdev_err(ndev, | |
226 | "unable to teardown send buffer's gpadl\n"); | |
7a2a0a84 | 227 | return; |
c25aaf81 | 228 | } |
2f18423d | 229 | net_device->send_buf_gpadl_handle = 0; |
c25aaf81 KS |
230 | } |
231 | if (net_device->send_buf) { | |
c51ed182 | 232 | /* Free up the send buffer */ |
06b47aac | 233 | vfree(net_device->send_buf); |
c25aaf81 KS |
234 | net_device->send_buf = NULL; |
235 | } | |
236 | kfree(net_device->send_section_map); | |
ec91cd09 HZ |
237 | } |
238 | ||
95790837 | 239 | static int netvsc_init_buf(struct hv_device *device, |
240 | struct netvsc_device *net_device) | |
fceaf24a | 241 | { |
21a80820 | 242 | int ret = 0; |
85799a37 | 243 | struct nvsp_message *init_packet; |
2ddd5e5f | 244 | struct net_device *ndev; |
fdfb70d2 | 245 | size_t map_words; |
0a726c2b | 246 | int node; |
fceaf24a | 247 | |
0a1275ca | 248 | ndev = hv_get_drvdata(device); |
fceaf24a | 249 | |
0a726c2b S |
250 | node = cpu_to_node(device->channel->target_cpu); |
251 | net_device->recv_buf = vzalloc_node(net_device->recv_buf_size, node); | |
252 | if (!net_device->recv_buf) | |
253 | net_device->recv_buf = vzalloc(net_device->recv_buf_size); | |
254 | ||
53d21fdb | 255 | if (!net_device->recv_buf) { |
d9871158 | 256 | netdev_err(ndev, "unable to allocate receive " |
c909ebbd | 257 | "buffer of size %d\n", net_device->recv_buf_size); |
927bc33c | 258 | ret = -ENOMEM; |
0c3b7b2f | 259 | goto cleanup; |
fceaf24a | 260 | } |
fceaf24a | 261 | |
454f18a9 BP |
262 | /* |
263 | * Establish the gpadl handle for this buffer on this | |
264 | * channel. Note: This call uses the vmbus connection rather | |
265 | * than the channel to establish the gpadl handle. | |
266 | */ | |
53d21fdb HZ |
267 | ret = vmbus_establish_gpadl(device->channel, net_device->recv_buf, |
268 | net_device->recv_buf_size, | |
269 | &net_device->recv_buf_gpadl_handle); | |
21a80820 | 270 | if (ret != 0) { |
d9871158 | 271 | netdev_err(ndev, |
c909ebbd | 272 | "unable to establish receive buffer's gpadl\n"); |
0c3b7b2f | 273 | goto cleanup; |
fceaf24a HJ |
274 | } |
275 | ||
454f18a9 | 276 | /* Notify the NetVsp of the gpadl handle */ |
53d21fdb | 277 | init_packet = &net_device->channel_init_pkt; |
85799a37 | 278 | memset(init_packet, 0, sizeof(struct nvsp_message)); |
53d21fdb HZ |
279 | init_packet->hdr.msg_type = NVSP_MSG1_TYPE_SEND_RECV_BUF; |
280 | init_packet->msg.v1_msg.send_recv_buf. | |
281 | gpadl_handle = net_device->recv_buf_gpadl_handle; | |
282 | init_packet->msg.v1_msg. | |
283 | send_recv_buf.id = NETVSC_RECEIVE_BUFFER_ID; | |
fceaf24a | 284 | |
454f18a9 | 285 | /* Send the gpadl notification request */ |
85799a37 | 286 | ret = vmbus_sendpacket(device->channel, init_packet, |
5a4df290 | 287 | sizeof(struct nvsp_message), |
85799a37 | 288 | (unsigned long)init_packet, |
415f2287 | 289 | VM_PKT_DATA_INBAND, |
5a4df290 | 290 | VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED); |
21a80820 | 291 | if (ret != 0) { |
d9871158 | 292 | netdev_err(ndev, |
c909ebbd | 293 | "unable to send receive buffer's gpadl to netvsp\n"); |
0c3b7b2f | 294 | goto cleanup; |
fceaf24a HJ |
295 | } |
296 | ||
5362855a | 297 | wait_for_completion(&net_device->channel_init_wait); |
fceaf24a | 298 | |
454f18a9 | 299 | /* Check the response */ |
53d21fdb HZ |
300 | if (init_packet->msg.v1_msg. |
301 | send_recv_buf_complete.status != NVSP_STAT_SUCCESS) { | |
d9871158 | 302 | netdev_err(ndev, "Unable to complete receive buffer " |
8bff33ab | 303 | "initialization with NetVsp - status %d\n", |
53d21fdb HZ |
304 | init_packet->msg.v1_msg. |
305 | send_recv_buf_complete.status); | |
927bc33c | 306 | ret = -EINVAL; |
0c3b7b2f | 307 | goto cleanup; |
fceaf24a HJ |
308 | } |
309 | ||
454f18a9 | 310 | /* Parse the response */ |
fceaf24a | 311 | |
53d21fdb HZ |
312 | net_device->recv_section_cnt = init_packet->msg. |
313 | v1_msg.send_recv_buf_complete.num_sections; | |
fceaf24a | 314 | |
c1813200 HZ |
315 | net_device->recv_section = kmemdup( |
316 | init_packet->msg.v1_msg.send_recv_buf_complete.sections, | |
317 | net_device->recv_section_cnt * | |
318 | sizeof(struct nvsp_1_receive_buffer_section), | |
319 | GFP_KERNEL); | |
53d21fdb | 320 | if (net_device->recv_section == NULL) { |
927bc33c | 321 | ret = -EINVAL; |
0c3b7b2f | 322 | goto cleanup; |
fceaf24a HJ |
323 | } |
324 | ||
21a80820 GKH |
325 | /* |
326 | * For 1st release, there should only be 1 section that represents the | |
327 | * entire receive buffer | |
328 | */ | |
53d21fdb HZ |
329 | if (net_device->recv_section_cnt != 1 || |
330 | net_device->recv_section->offset != 0) { | |
927bc33c | 331 | ret = -EINVAL; |
0c3b7b2f | 332 | goto cleanup; |
fceaf24a HJ |
333 | } |
334 | ||
c25aaf81 KS |
335 | /* Now setup the send buffer. |
336 | */ | |
5defde59 S |
337 | net_device->send_buf = vzalloc_node(net_device->send_buf_size, node); |
338 | if (!net_device->send_buf) | |
339 | net_device->send_buf = vzalloc(net_device->send_buf_size); | |
c25aaf81 KS |
340 | if (!net_device->send_buf) { |
341 | netdev_err(ndev, "unable to allocate send " | |
342 | "buffer of size %d\n", net_device->send_buf_size); | |
343 | ret = -ENOMEM; | |
344 | goto cleanup; | |
345 | } | |
346 | ||
347 | /* Establish the gpadl handle for this buffer on this | |
348 | * channel. Note: This call uses the vmbus connection rather | |
349 | * than the channel to establish the gpadl handle. | |
350 | */ | |
351 | ret = vmbus_establish_gpadl(device->channel, net_device->send_buf, | |
352 | net_device->send_buf_size, | |
353 | &net_device->send_buf_gpadl_handle); | |
354 | if (ret != 0) { | |
355 | netdev_err(ndev, | |
356 | "unable to establish send buffer's gpadl\n"); | |
357 | goto cleanup; | |
358 | } | |
359 | ||
360 | /* Notify the NetVsp of the gpadl handle */ | |
361 | init_packet = &net_device->channel_init_pkt; | |
362 | memset(init_packet, 0, sizeof(struct nvsp_message)); | |
363 | init_packet->hdr.msg_type = NVSP_MSG1_TYPE_SEND_SEND_BUF; | |
c51ed182 | 364 | init_packet->msg.v1_msg.send_send_buf.gpadl_handle = |
c25aaf81 | 365 | net_device->send_buf_gpadl_handle; |
c51ed182 | 366 | init_packet->msg.v1_msg.send_send_buf.id = NETVSC_SEND_BUFFER_ID; |
c25aaf81 KS |
367 | |
368 | /* Send the gpadl notification request */ | |
369 | ret = vmbus_sendpacket(device->channel, init_packet, | |
370 | sizeof(struct nvsp_message), | |
371 | (unsigned long)init_packet, | |
372 | VM_PKT_DATA_INBAND, | |
373 | VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED); | |
374 | if (ret != 0) { | |
375 | netdev_err(ndev, | |
376 | "unable to send send buffer's gpadl to netvsp\n"); | |
377 | goto cleanup; | |
378 | } | |
379 | ||
5362855a | 380 | wait_for_completion(&net_device->channel_init_wait); |
c25aaf81 KS |
381 | |
382 | /* Check the response */ | |
383 | if (init_packet->msg.v1_msg. | |
384 | send_send_buf_complete.status != NVSP_STAT_SUCCESS) { | |
385 | netdev_err(ndev, "Unable to complete send buffer " | |
386 | "initialization with NetVsp - status %d\n", | |
387 | init_packet->msg.v1_msg. | |
c51ed182 | 388 | send_send_buf_complete.status); |
c25aaf81 KS |
389 | ret = -EINVAL; |
390 | goto cleanup; | |
391 | } | |
392 | ||
393 | /* Parse the response */ | |
394 | net_device->send_section_size = init_packet->msg. | |
395 | v1_msg.send_send_buf_complete.section_size; | |
396 | ||
397 | /* Section count is simply the size divided by the section size. | |
398 | */ | |
399 | net_device->send_section_cnt = | |
796cc88c | 400 | net_device->send_buf_size / net_device->send_section_size; |
c25aaf81 | 401 | |
93ba2222 VK |
402 | netdev_dbg(ndev, "Send section size: %d, Section count:%d\n", |
403 | net_device->send_section_size, net_device->send_section_cnt); | |
c25aaf81 KS |
404 | |
405 | /* Setup state for managing the send buffer. */ | |
fdfb70d2 | 406 | map_words = DIV_ROUND_UP(net_device->send_section_cnt, BITS_PER_LONG); |
c25aaf81 | 407 | |
fdfb70d2 | 408 | net_device->send_section_map = kcalloc(map_words, sizeof(ulong), GFP_KERNEL); |
dd1d3f8f WY |
409 | if (net_device->send_section_map == NULL) { |
410 | ret = -ENOMEM; | |
c25aaf81 | 411 | goto cleanup; |
dd1d3f8f | 412 | } |
c25aaf81 | 413 | |
0c3b7b2f | 414 | goto exit; |
fceaf24a | 415 | |
0c3b7b2f | 416 | cleanup: |
3d541ac5 | 417 | netvsc_destroy_buf(device); |
fceaf24a | 418 | |
0c3b7b2f | 419 | exit: |
fceaf24a HJ |
420 | return ret; |
421 | } | |
422 | ||
f157e78d HZ |
423 | /* Negotiate NVSP protocol version */ |
424 | static int negotiate_nvsp_ver(struct hv_device *device, | |
425 | struct netvsc_device *net_device, | |
426 | struct nvsp_message *init_packet, | |
427 | u32 nvsp_ver) | |
fceaf24a | 428 | { |
0a1275ca | 429 | struct net_device *ndev = hv_get_drvdata(device); |
7390fe9c | 430 | int ret; |
fceaf24a | 431 | |
85799a37 | 432 | memset(init_packet, 0, sizeof(struct nvsp_message)); |
53d21fdb | 433 | init_packet->hdr.msg_type = NVSP_MSG_TYPE_INIT; |
f157e78d HZ |
434 | init_packet->msg.init_msg.init.min_protocol_ver = nvsp_ver; |
435 | init_packet->msg.init_msg.init.max_protocol_ver = nvsp_ver; | |
fceaf24a | 436 | |
454f18a9 | 437 | /* Send the init request */ |
85799a37 | 438 | ret = vmbus_sendpacket(device->channel, init_packet, |
5a4df290 | 439 | sizeof(struct nvsp_message), |
85799a37 | 440 | (unsigned long)init_packet, |
415f2287 | 441 | VM_PKT_DATA_INBAND, |
5a4df290 | 442 | VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED); |
21a80820 | 443 | |
b8a3d52b | 444 | if (ret != 0) |
f157e78d | 445 | return ret; |
fceaf24a | 446 | |
5362855a | 447 | wait_for_completion(&net_device->channel_init_wait); |
fceaf24a | 448 | |
53d21fdb | 449 | if (init_packet->msg.init_msg.init_complete.status != |
f157e78d HZ |
450 | NVSP_STAT_SUCCESS) |
451 | return -EINVAL; | |
fceaf24a | 452 | |
a1eabb01 | 453 | if (nvsp_ver == NVSP_PROTOCOL_VERSION_1) |
f157e78d HZ |
454 | return 0; |
455 | ||
71790a27 | 456 | /* NVSPv2 or later: Send NDIS config */ |
f157e78d HZ |
457 | memset(init_packet, 0, sizeof(struct nvsp_message)); |
458 | init_packet->hdr.msg_type = NVSP_MSG2_TYPE_SEND_NDIS_CONFIG; | |
0a1275ca | 459 | init_packet->msg.v2_msg.send_ndis_config.mtu = ndev->mtu + ETH_HLEN; |
1f5f3a75 | 460 | init_packet->msg.v2_msg.send_ndis_config.capability.ieee8021q = 1; |
f157e78d | 461 | |
7f5d5af0 | 462 | if (nvsp_ver >= NVSP_PROTOCOL_VERSION_5) { |
71790a27 HZ |
463 | init_packet->msg.v2_msg.send_ndis_config.capability.sriov = 1; |
464 | ||
7f5d5af0 HZ |
465 | /* Teaming bit is needed to receive link speed updates */ |
466 | init_packet->msg.v2_msg.send_ndis_config.capability.teaming = 1; | |
467 | } | |
468 | ||
f157e78d HZ |
469 | ret = vmbus_sendpacket(device->channel, init_packet, |
470 | sizeof(struct nvsp_message), | |
471 | (unsigned long)init_packet, | |
472 | VM_PKT_DATA_INBAND, 0); | |
473 | ||
474 | return ret; | |
475 | } | |
476 | ||
95790837 | 477 | static int netvsc_connect_vsp(struct hv_device *device, |
478 | struct netvsc_device *net_device) | |
f157e78d | 479 | { |
e5a78fad SH |
480 | const u32 ver_list[] = { |
481 | NVSP_PROTOCOL_VERSION_1, NVSP_PROTOCOL_VERSION_2, | |
95790837 | 482 | NVSP_PROTOCOL_VERSION_4, NVSP_PROTOCOL_VERSION_5 |
483 | }; | |
484 | struct nvsp_message *init_packet; | |
485 | int ndis_version, i, ret; | |
f157e78d HZ |
486 | |
487 | init_packet = &net_device->channel_init_pkt; | |
488 | ||
489 | /* Negotiate the latest NVSP protocol supported */ | |
e5a78fad | 490 | for (i = ARRAY_SIZE(ver_list) - 1; i >= 0; i--) |
a1eabb01 HZ |
491 | if (negotiate_nvsp_ver(device, net_device, init_packet, |
492 | ver_list[i]) == 0) { | |
493 | net_device->nvsp_version = ver_list[i]; | |
494 | break; | |
495 | } | |
496 | ||
497 | if (i < 0) { | |
0f48c72c | 498 | ret = -EPROTO; |
0c3b7b2f | 499 | goto cleanup; |
fceaf24a | 500 | } |
f157e78d HZ |
501 | |
502 | pr_debug("Negotiated NVSP version:%x\n", net_device->nvsp_version); | |
503 | ||
454f18a9 | 504 | /* Send the ndis version */ |
85799a37 | 505 | memset(init_packet, 0, sizeof(struct nvsp_message)); |
fceaf24a | 506 | |
a1eabb01 | 507 | if (net_device->nvsp_version <= NVSP_PROTOCOL_VERSION_4) |
1f73db49 | 508 | ndis_version = 0x00060001; |
a1eabb01 HZ |
509 | else |
510 | ndis_version = 0x0006001e; | |
fceaf24a | 511 | |
53d21fdb HZ |
512 | init_packet->hdr.msg_type = NVSP_MSG1_TYPE_SEND_NDIS_VER; |
513 | init_packet->msg.v1_msg. | |
514 | send_ndis_ver.ndis_major_ver = | |
85799a37 | 515 | (ndis_version & 0xFFFF0000) >> 16; |
53d21fdb HZ |
516 | init_packet->msg.v1_msg. |
517 | send_ndis_ver.ndis_minor_ver = | |
85799a37 | 518 | ndis_version & 0xFFFF; |
fceaf24a | 519 | |
454f18a9 | 520 | /* Send the init request */ |
85799a37 | 521 | ret = vmbus_sendpacket(device->channel, init_packet, |
0c3b7b2f S |
522 | sizeof(struct nvsp_message), |
523 | (unsigned long)init_packet, | |
524 | VM_PKT_DATA_INBAND, 0); | |
0f48c72c | 525 | if (ret != 0) |
0c3b7b2f | 526 | goto cleanup; |
454f18a9 BP |
527 | |
528 | /* Post the big receive buffer to NetVSP */ | |
99d3016d HZ |
529 | if (net_device->nvsp_version <= NVSP_PROTOCOL_VERSION_2) |
530 | net_device->recv_buf_size = NETVSC_RECEIVE_BUFFER_SIZE_LEGACY; | |
531 | else | |
532 | net_device->recv_buf_size = NETVSC_RECEIVE_BUFFER_SIZE; | |
c25aaf81 | 533 | net_device->send_buf_size = NETVSC_SEND_BUFFER_SIZE; |
99d3016d | 534 | |
95790837 | 535 | ret = netvsc_init_buf(device, net_device); |
fceaf24a | 536 | |
0c3b7b2f | 537 | cleanup: |
fceaf24a HJ |
538 | return ret; |
539 | } | |
540 | ||
3d541ac5 | 541 | static void netvsc_disconnect_vsp(struct hv_device *device) |
fceaf24a | 542 | { |
3d541ac5 | 543 | netvsc_destroy_buf(device); |
fceaf24a HJ |
544 | } |
545 | ||
3e189519 | 546 | /* |
5a71ae30 | 547 | * netvsc_device_remove - Callback when the root bus device is removed |
21a80820 | 548 | */ |
e08f3ea5 | 549 | void netvsc_device_remove(struct hv_device *device) |
fceaf24a | 550 | { |
3d541ac5 VK |
551 | struct net_device *ndev = hv_get_drvdata(device); |
552 | struct net_device_context *net_device_ctx = netdev_priv(ndev); | |
553 | struct netvsc_device *net_device = net_device_ctx->nvdev; | |
15a863bf | 554 | int i; |
fceaf24a | 555 | |
3d541ac5 | 556 | netvsc_disconnect_vsp(device); |
9d88f33a | 557 | |
545a8e79 | 558 | RCU_INIT_POINTER(net_device_ctx->nvdev, NULL); |
3852409b | 559 | |
86c921af S |
560 | /* |
561 | * At this point, no one should be accessing net_device | |
562 | * except in here | |
563 | */ | |
93ba2222 | 564 | netdev_dbg(ndev, "net device safe to remove\n"); |
fceaf24a | 565 | |
454f18a9 | 566 | /* Now, we can close the channel safely */ |
85799a37 | 567 | vmbus_close(device->channel); |
fceaf24a | 568 | |
76bb5db5 | 569 | /* And dissassociate NAPI context from device */ |
79cd874c | 570 | for (i = 0; i < net_device->num_chn; i++) |
76bb5db5 | 571 | netif_napi_del(&net_device->chan_table[i].napi); |
15a863bf | 572 | |
454f18a9 | 573 | /* Release all resources */ |
545a8e79 | 574 | free_netvsc_device_rcu(net_device); |
fceaf24a HJ |
575 | } |
576 | ||
33be96e4 HZ |
577 | #define RING_AVAIL_PERCENT_HIWATER 20 |
578 | #define RING_AVAIL_PERCENT_LOWATER 10 | |
579 | ||
580 | /* | |
581 | * Get the percentage of available bytes to write in the ring. | |
582 | * The return value is in range from 0 to 100. | |
583 | */ | |
584 | static inline u32 hv_ringbuf_avail_percent( | |
585 | struct hv_ring_buffer_info *ring_info) | |
586 | { | |
587 | u32 avail_read, avail_write; | |
588 | ||
589 | hv_get_ringbuffer_availbytes(ring_info, &avail_read, &avail_write); | |
590 | ||
591 | return avail_write * 100 / ring_info->ring_datasize; | |
592 | } | |
593 | ||
c25aaf81 KS |
594 | static inline void netvsc_free_send_slot(struct netvsc_device *net_device, |
595 | u32 index) | |
596 | { | |
597 | sync_change_bit(index, net_device->send_section_map); | |
598 | } | |
599 | ||
bc304dd3 SH |
600 | static void netvsc_send_tx_complete(struct netvsc_device *net_device, |
601 | struct vmbus_channel *incoming_channel, | |
602 | struct hv_device *device, | |
f9645430 | 603 | const struct vmpacket_descriptor *desc, |
604 | int budget) | |
bc304dd3 | 605 | { |
50698d80 | 606 | struct sk_buff *skb = (struct sk_buff *)(unsigned long)desc->trans_id; |
bc304dd3 | 607 | struct net_device *ndev = hv_get_drvdata(device); |
bc304dd3 | 608 | struct vmbus_channel *channel = device->channel; |
bc304dd3 SH |
609 | u16 q_idx = 0; |
610 | int queue_sends; | |
611 | ||
612 | /* Notify the layer above us */ | |
613 | if (likely(skb)) { | |
793e3955 | 614 | const struct hv_netvsc_packet *packet |
bc304dd3 | 615 | = (struct hv_netvsc_packet *)skb->cb; |
793e3955 | 616 | u32 send_index = packet->send_buf_index; |
617 | struct netvsc_stats *tx_stats; | |
bc304dd3 SH |
618 | |
619 | if (send_index != NETVSC_INVALID_INDEX) | |
620 | netvsc_free_send_slot(net_device, send_index); | |
793e3955 | 621 | q_idx = packet->q_idx; |
bc304dd3 SH |
622 | channel = incoming_channel; |
623 | ||
6c80f3fc | 624 | tx_stats = &net_device->chan_table[q_idx].tx_stats; |
793e3955 | 625 | |
626 | u64_stats_update_begin(&tx_stats->syncp); | |
627 | tx_stats->packets += packet->total_packets; | |
628 | tx_stats->bytes += packet->total_bytes; | |
629 | u64_stats_update_end(&tx_stats->syncp); | |
630 | ||
f9645430 | 631 | napi_consume_skb(skb, budget); |
bc304dd3 SH |
632 | } |
633 | ||
b8b835a8 | 634 | queue_sends = |
635 | atomic_dec_return(&net_device->chan_table[q_idx].queue_sends); | |
bc304dd3 | 636 | |
46b4f7f5 | 637 | if (net_device->destroy && queue_sends == 0) |
bc304dd3 SH |
638 | wake_up(&net_device->wait_drain); |
639 | ||
640 | if (netif_tx_queue_stopped(netdev_get_tx_queue(ndev, q_idx)) && | |
bc304dd3 SH |
641 | (hv_ringbuf_avail_percent(&channel->outbound) > RING_AVAIL_PERCENT_HIWATER || |
642 | queue_sends < 1)) | |
643 | netif_tx_wake_queue(netdev_get_tx_queue(ndev, q_idx)); | |
644 | } | |
645 | ||
97c1723a | 646 | static void netvsc_send_completion(struct netvsc_device *net_device, |
25b85ee8 | 647 | struct vmbus_channel *incoming_channel, |
97c1723a | 648 | struct hv_device *device, |
f9645430 | 649 | const struct vmpacket_descriptor *desc, |
650 | int budget) | |
fceaf24a | 651 | { |
f3dd3f47 | 652 | struct nvsp_message *nvsp_packet = hv_pkt_data(desc); |
3d541ac5 | 653 | struct net_device *ndev = hv_get_drvdata(device); |
fceaf24a | 654 | |
bc304dd3 SH |
655 | switch (nvsp_packet->hdr.msg_type) { |
656 | case NVSP_MSG_TYPE_INIT_COMPLETE: | |
657 | case NVSP_MSG1_TYPE_SEND_RECV_BUF_COMPLETE: | |
658 | case NVSP_MSG1_TYPE_SEND_SEND_BUF_COMPLETE: | |
659 | case NVSP_MSG5_TYPE_SUBCHANNEL: | |
454f18a9 | 660 | /* Copy the response back */ |
53d21fdb | 661 | memcpy(&net_device->channel_init_pkt, nvsp_packet, |
21a80820 | 662 | sizeof(struct nvsp_message)); |
35abb21a | 663 | complete(&net_device->channel_init_wait); |
bc304dd3 SH |
664 | break; |
665 | ||
666 | case NVSP_MSG1_TYPE_SEND_RNDIS_PKT_COMPLETE: | |
667 | netvsc_send_tx_complete(net_device, incoming_channel, | |
f9645430 | 668 | device, desc, budget); |
bc304dd3 | 669 | break; |
fceaf24a | 670 | |
bc304dd3 SH |
671 | default: |
672 | netdev_err(ndev, | |
673 | "Unknown send completion type %d received!!\n", | |
674 | nvsp_packet->hdr.msg_type); | |
fceaf24a | 675 | } |
fceaf24a HJ |
676 | } |
677 | ||
c25aaf81 KS |
678 | static u32 netvsc_get_next_send_section(struct netvsc_device *net_device) |
679 | { | |
b58a1858 | 680 | unsigned long *map_addr = net_device->send_section_map; |
681 | unsigned int i; | |
682 | ||
fdfb70d2 | 683 | for_each_clear_bit(i, map_addr, net_device->send_section_cnt) { |
b58a1858 | 684 | if (sync_test_and_set_bit(i, map_addr) == 0) |
685 | return i; | |
c25aaf81 | 686 | } |
b58a1858 | 687 | |
688 | return NETVSC_INVALID_INDEX; | |
c25aaf81 KS |
689 | } |
690 | ||
da19fcd0 LP |
691 | static u32 netvsc_copy_to_send_buf(struct netvsc_device *net_device, |
692 | unsigned int section_index, | |
7c3877f2 | 693 | u32 pend_size, |
24476760 | 694 | struct hv_netvsc_packet *packet, |
a9f2e2d6 | 695 | struct rndis_message *rndis_msg, |
694a9fb0 KS |
696 | struct hv_page_buffer **pb, |
697 | struct sk_buff *skb) | |
c25aaf81 KS |
698 | { |
699 | char *start = net_device->send_buf; | |
7c3877f2 HZ |
700 | char *dest = start + (section_index * net_device->send_section_size) |
701 | + pend_size; | |
c25aaf81 KS |
702 | int i; |
703 | u32 msg_size = 0; | |
7c3877f2 HZ |
704 | u32 padding = 0; |
705 | u32 remain = packet->total_data_buflen % net_device->pkt_align; | |
aa0a34be HZ |
706 | u32 page_count = packet->cp_partial ? packet->rmsg_pgcnt : |
707 | packet->page_buf_cnt; | |
7c3877f2 HZ |
708 | |
709 | /* Add padding */ | |
ebc1dcf6 | 710 | if (skb->xmit_more && remain && !packet->cp_partial) { |
7c3877f2 | 711 | padding = net_device->pkt_align - remain; |
24476760 | 712 | rndis_msg->msg_len += padding; |
7c3877f2 HZ |
713 | packet->total_data_buflen += padding; |
714 | } | |
c25aaf81 | 715 | |
aa0a34be | 716 | for (i = 0; i < page_count; i++) { |
a9f2e2d6 KS |
717 | char *src = phys_to_virt((*pb)[i].pfn << PAGE_SHIFT); |
718 | u32 offset = (*pb)[i].offset; | |
719 | u32 len = (*pb)[i].len; | |
c25aaf81 KS |
720 | |
721 | memcpy(dest, (src + offset), len); | |
722 | msg_size += len; | |
723 | dest += len; | |
724 | } | |
7c3877f2 HZ |
725 | |
726 | if (padding) { | |
727 | memset(dest, 0, padding); | |
728 | msg_size += padding; | |
729 | } | |
730 | ||
c25aaf81 KS |
731 | return msg_size; |
732 | } | |
733 | ||
3a8963ac | 734 | static inline int netvsc_send_pkt( |
0a1275ca | 735 | struct hv_device *device, |
7c3877f2 | 736 | struct hv_netvsc_packet *packet, |
a9f2e2d6 | 737 | struct netvsc_device *net_device, |
3a3d9a0a KS |
738 | struct hv_page_buffer **pb, |
739 | struct sk_buff *skb) | |
fceaf24a | 740 | { |
7c3877f2 | 741 | struct nvsp_message nvmsg; |
b8b835a8 | 742 | struct netvsc_channel *nvchan |
743 | = &net_device->chan_table[packet->q_idx]; | |
744 | struct vmbus_channel *out_channel = nvchan->channel; | |
0a1275ca | 745 | struct net_device *ndev = hv_get_drvdata(device); |
b8b835a8 | 746 | struct netdev_queue *txq = netdev_get_tx_queue(ndev, packet->q_idx); |
7c3877f2 HZ |
747 | u64 req_id; |
748 | int ret; | |
aa0a34be | 749 | struct hv_page_buffer *pgbuf; |
82fa3c77 | 750 | u32 ring_avail = hv_ringbuf_avail_percent(&out_channel->outbound); |
c25aaf81 | 751 | |
7c3877f2 | 752 | nvmsg.hdr.msg_type = NVSP_MSG1_TYPE_SEND_RNDIS_PKT; |
694a9fb0 | 753 | if (skb != NULL) { |
21a80820 | 754 | /* 0 is RMC_DATA; */ |
7c3877f2 | 755 | nvmsg.msg.v1_msg.send_rndis_pkt.channel_type = 0; |
21a80820 GKH |
756 | } else { |
757 | /* 1 is RMC_CONTROL; */ | |
7c3877f2 | 758 | nvmsg.msg.v1_msg.send_rndis_pkt.channel_type = 1; |
21a80820 | 759 | } |
fceaf24a | 760 | |
7c3877f2 HZ |
761 | nvmsg.msg.v1_msg.send_rndis_pkt.send_buf_section_index = |
762 | packet->send_buf_index; | |
763 | if (packet->send_buf_index == NETVSC_INVALID_INDEX) | |
764 | nvmsg.msg.v1_msg.send_rndis_pkt.send_buf_section_size = 0; | |
765 | else | |
766 | nvmsg.msg.v1_msg.send_rndis_pkt.send_buf_section_size = | |
767 | packet->total_data_buflen; | |
21a80820 | 768 | |
3a3d9a0a | 769 | req_id = (ulong)skb; |
f1ea3cd7 | 770 | |
c3582a2c HZ |
771 | if (out_channel->rescind) |
772 | return -ENODEV; | |
773 | ||
72a2f5bd | 774 | if (packet->page_buf_cnt) { |
a9f2e2d6 KS |
775 | pgbuf = packet->cp_partial ? (*pb) + |
776 | packet->rmsg_pgcnt : (*pb); | |
82fa3c77 KS |
777 | ret = vmbus_sendpacket_pagebuffer_ctl(out_channel, |
778 | pgbuf, | |
779 | packet->page_buf_cnt, | |
780 | &nvmsg, | |
781 | sizeof(struct nvsp_message), | |
782 | req_id, | |
3454323c | 783 | VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED); |
21a80820 | 784 | } else { |
82fa3c77 KS |
785 | ret = vmbus_sendpacket_ctl(out_channel, &nvmsg, |
786 | sizeof(struct nvsp_message), | |
787 | req_id, | |
788 | VM_PKT_DATA_INBAND, | |
3454323c | 789 | VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED); |
fceaf24a HJ |
790 | } |
791 | ||
1d06825b | 792 | if (ret == 0) { |
b8b835a8 | 793 | atomic_inc_return(&nvchan->queue_sends); |
5b54dac8 | 794 | |
46b4f7f5 | 795 | if (ring_avail < RING_AVAIL_PERCENT_LOWATER) |
b8b835a8 | 796 | netif_tx_stop_queue(txq); |
1d06825b | 797 | } else if (ret == -EAGAIN) { |
b8b835a8 | 798 | netif_tx_stop_queue(txq); |
799 | if (atomic_read(&nvchan->queue_sends) < 1) { | |
800 | netif_tx_wake_queue(txq); | |
33be96e4 HZ |
801 | ret = -ENOSPC; |
802 | } | |
1d06825b | 803 | } else { |
d9871158 | 804 | netdev_err(ndev, "Unable to send packet %p ret %d\n", |
85799a37 | 805 | packet, ret); |
1d06825b | 806 | } |
fceaf24a | 807 | |
7c3877f2 HZ |
808 | return ret; |
809 | } | |
810 | ||
c85e4924 HZ |
811 | /* Move packet out of multi send data (msd), and clear msd */ |
812 | static inline void move_pkt_msd(struct hv_netvsc_packet **msd_send, | |
813 | struct sk_buff **msd_skb, | |
814 | struct multi_send_data *msdp) | |
815 | { | |
816 | *msd_skb = msdp->skb; | |
817 | *msd_send = msdp->pkt; | |
818 | msdp->skb = NULL; | |
819 | msdp->pkt = NULL; | |
820 | msdp->count = 0; | |
821 | } | |
822 | ||
7c3877f2 | 823 | int netvsc_send(struct hv_device *device, |
24476760 | 824 | struct hv_netvsc_packet *packet, |
a9f2e2d6 | 825 | struct rndis_message *rndis_msg, |
3a3d9a0a KS |
826 | struct hv_page_buffer **pb, |
827 | struct sk_buff *skb) | |
7c3877f2 | 828 | { |
592b4fe8 | 829 | struct netvsc_device *net_device = hv_device_to_netvsc_device(device); |
6c4c137e | 830 | int ret = 0; |
b8b835a8 | 831 | struct netvsc_channel *nvchan; |
7c3877f2 HZ |
832 | u32 pktlen = packet->total_data_buflen, msd_len = 0; |
833 | unsigned int section_index = NETVSC_INVALID_INDEX; | |
7c3877f2 HZ |
834 | struct multi_send_data *msdp; |
835 | struct hv_netvsc_packet *msd_send = NULL, *cur_send = NULL; | |
c85e4924 | 836 | struct sk_buff *msd_skb = NULL; |
aa0a34be | 837 | bool try_batch; |
bde79be5 | 838 | bool xmit_more = (skb != NULL) ? skb->xmit_more : false; |
7c3877f2 | 839 | |
592b4fe8 | 840 | /* If device is rescinded, return error and packet will get dropped. */ |
841 | if (unlikely(net_device->destroy)) | |
7c3877f2 HZ |
842 | return -ENODEV; |
843 | ||
e8f0a89c VK |
844 | /* We may race with netvsc_connect_vsp()/netvsc_init_buf() and get |
845 | * here before the negotiation with the host is finished and | |
846 | * send_section_map may not be allocated yet. | |
847 | */ | |
2d694d2a | 848 | if (unlikely(!net_device->send_section_map)) |
e8f0a89c VK |
849 | return -EAGAIN; |
850 | ||
b8b835a8 | 851 | nvchan = &net_device->chan_table[packet->q_idx]; |
7c3877f2 | 852 | packet->send_buf_index = NETVSC_INVALID_INDEX; |
aa0a34be | 853 | packet->cp_partial = false; |
7c3877f2 | 854 | |
cf8190e4 HZ |
855 | /* Send control message directly without accessing msd (Multi-Send |
856 | * Data) field which may be changed during data packet processing. | |
857 | */ | |
858 | if (!skb) { | |
859 | cur_send = packet; | |
860 | goto send_now; | |
861 | } | |
862 | ||
7c3877f2 | 863 | /* batch packets in send buffer if possible */ |
b8b835a8 | 864 | msdp = &nvchan->msd; |
7c3877f2 HZ |
865 | if (msdp->pkt) |
866 | msd_len = msdp->pkt->total_data_buflen; | |
867 | ||
ebc1dcf6 | 868 | try_batch = msd_len > 0 && msdp->count < net_device->max_pkt; |
aa0a34be | 869 | if (try_batch && msd_len + pktlen + net_device->pkt_align < |
7c3877f2 HZ |
870 | net_device->send_section_size) { |
871 | section_index = msdp->pkt->send_buf_index; | |
872 | ||
aa0a34be HZ |
873 | } else if (try_batch && msd_len + packet->rmsg_size < |
874 | net_device->send_section_size) { | |
875 | section_index = msdp->pkt->send_buf_index; | |
876 | packet->cp_partial = true; | |
877 | ||
ebc1dcf6 | 878 | } else if (pktlen + net_device->pkt_align < |
7c3877f2 HZ |
879 | net_device->send_section_size) { |
880 | section_index = netvsc_get_next_send_section(net_device); | |
881 | if (section_index != NETVSC_INVALID_INDEX) { | |
c85e4924 HZ |
882 | move_pkt_msd(&msd_send, &msd_skb, msdp); |
883 | msd_len = 0; | |
7c3877f2 HZ |
884 | } |
885 | } | |
886 | ||
887 | if (section_index != NETVSC_INVALID_INDEX) { | |
888 | netvsc_copy_to_send_buf(net_device, | |
889 | section_index, msd_len, | |
694a9fb0 | 890 | packet, rndis_msg, pb, skb); |
b08cc791 | 891 | |
7c3877f2 | 892 | packet->send_buf_index = section_index; |
aa0a34be HZ |
893 | |
894 | if (packet->cp_partial) { | |
895 | packet->page_buf_cnt -= packet->rmsg_pgcnt; | |
896 | packet->total_data_buflen = msd_len + packet->rmsg_size; | |
897 | } else { | |
898 | packet->page_buf_cnt = 0; | |
899 | packet->total_data_buflen += msd_len; | |
aa0a34be | 900 | } |
7c3877f2 | 901 | |
793e3955 | 902 | if (msdp->pkt) { |
903 | packet->total_packets += msdp->pkt->total_packets; | |
904 | packet->total_bytes += msdp->pkt->total_bytes; | |
905 | } | |
906 | ||
c85e4924 | 907 | if (msdp->skb) |
17db4bce | 908 | dev_consume_skb_any(msdp->skb); |
ee90b812 | 909 | |
bde79be5 | 910 | if (xmit_more && !packet->cp_partial) { |
c85e4924 | 911 | msdp->skb = skb; |
7c3877f2 HZ |
912 | msdp->pkt = packet; |
913 | msdp->count++; | |
914 | } else { | |
915 | cur_send = packet; | |
c85e4924 | 916 | msdp->skb = NULL; |
7c3877f2 HZ |
917 | msdp->pkt = NULL; |
918 | msdp->count = 0; | |
919 | } | |
920 | } else { | |
c85e4924 | 921 | move_pkt_msd(&msd_send, &msd_skb, msdp); |
7c3877f2 HZ |
922 | cur_send = packet; |
923 | } | |
924 | ||
7c3877f2 | 925 | if (msd_send) { |
6c4c137e SH |
926 | int m_ret = netvsc_send_pkt(device, msd_send, net_device, |
927 | NULL, msd_skb); | |
7c3877f2 HZ |
928 | |
929 | if (m_ret != 0) { | |
930 | netvsc_free_send_slot(net_device, | |
931 | msd_send->send_buf_index); | |
c85e4924 | 932 | dev_kfree_skb_any(msd_skb); |
7c3877f2 HZ |
933 | } |
934 | } | |
935 | ||
cf8190e4 | 936 | send_now: |
7c3877f2 | 937 | if (cur_send) |
0a1275ca | 938 | ret = netvsc_send_pkt(device, cur_send, net_device, pb, skb); |
7c3877f2 | 939 | |
7aab5159 JS |
940 | if (ret != 0 && section_index != NETVSC_INVALID_INDEX) |
941 | netvsc_free_send_slot(net_device, section_index); | |
d953ca4d | 942 | |
fceaf24a HJ |
943 | return ret; |
944 | } | |
945 | ||
c0b558e5 HZ |
946 | static int netvsc_send_recv_completion(struct vmbus_channel *channel, |
947 | u64 transaction_id, u32 status) | |
5fa9d3c5 HZ |
948 | { |
949 | struct nvsp_message recvcompMessage; | |
5fa9d3c5 HZ |
950 | int ret; |
951 | ||
952 | recvcompMessage.hdr.msg_type = | |
953 | NVSP_MSG1_TYPE_SEND_RNDIS_PKT_COMPLETE; | |
954 | ||
63f6921d | 955 | recvcompMessage.msg.v1_msg.send_rndis_pkt_complete.status = status; |
5fa9d3c5 | 956 | |
5fa9d3c5 | 957 | /* Send the completion */ |
5b54dac8 | 958 | ret = vmbus_sendpacket(channel, &recvcompMessage, |
c0b558e5 HZ |
959 | sizeof(struct nvsp_message_header) + sizeof(u32), |
960 | transaction_id, VM_PKT_COMP, 0); | |
961 | ||
962 | return ret; | |
963 | } | |
964 | ||
965 | static inline void count_recv_comp_slot(struct netvsc_device *nvdev, u16 q_idx, | |
966 | u32 *filled, u32 *avail) | |
967 | { | |
b8b835a8 | 968 | struct multi_recv_comp *mrc = &nvdev->chan_table[q_idx].mrc; |
969 | u32 first = mrc->first; | |
970 | u32 next = mrc->next; | |
c0b558e5 HZ |
971 | |
972 | *filled = (first > next) ? NETVSC_RECVSLOT_MAX - first + next : | |
973 | next - first; | |
974 | ||
975 | *avail = NETVSC_RECVSLOT_MAX - *filled - 1; | |
976 | } | |
977 | ||
978 | /* Read the first filled slot, no change to index */ | |
979 | static inline struct recv_comp_data *read_recv_comp_slot(struct netvsc_device | |
980 | *nvdev, u16 q_idx) | |
981 | { | |
b8b835a8 | 982 | struct multi_recv_comp *mrc = &nvdev->chan_table[q_idx].mrc; |
c0b558e5 HZ |
983 | u32 filled, avail; |
984 | ||
b8b835a8 | 985 | if (unlikely(!mrc->buf)) |
c0b558e5 HZ |
986 | return NULL; |
987 | ||
988 | count_recv_comp_slot(nvdev, q_idx, &filled, &avail); | |
989 | if (!filled) | |
990 | return NULL; | |
991 | ||
b8b835a8 | 992 | return mrc->buf + mrc->first * sizeof(struct recv_comp_data); |
c0b558e5 HZ |
993 | } |
994 | ||
995 | /* Put the first filled slot back to available pool */ | |
996 | static inline void put_recv_comp_slot(struct netvsc_device *nvdev, u16 q_idx) | |
997 | { | |
b8b835a8 | 998 | struct multi_recv_comp *mrc = &nvdev->chan_table[q_idx].mrc; |
c0b558e5 HZ |
999 | int num_recv; |
1000 | ||
b8b835a8 | 1001 | mrc->first = (mrc->first + 1) % NETVSC_RECVSLOT_MAX; |
c0b558e5 HZ |
1002 | |
1003 | num_recv = atomic_dec_return(&nvdev->num_outstanding_recvs); | |
1004 | ||
1005 | if (nvdev->destroy && num_recv == 0) | |
1006 | wake_up(&nvdev->wait_drain); | |
1007 | } | |
1008 | ||
1009 | /* Check and send pending recv completions */ | |
1010 | static void netvsc_chk_recv_comp(struct netvsc_device *nvdev, | |
1011 | struct vmbus_channel *channel, u16 q_idx) | |
1012 | { | |
1013 | struct recv_comp_data *rcd; | |
1014 | int ret; | |
1015 | ||
1016 | while (true) { | |
1017 | rcd = read_recv_comp_slot(nvdev, q_idx); | |
1018 | if (!rcd) | |
1019 | break; | |
1020 | ||
1021 | ret = netvsc_send_recv_completion(channel, rcd->tid, | |
1022 | rcd->status); | |
1023 | if (ret) | |
1024 | break; | |
1025 | ||
1026 | put_recv_comp_slot(nvdev, q_idx); | |
5fa9d3c5 HZ |
1027 | } |
1028 | } | |
1029 | ||
c0b558e5 HZ |
1030 | #define NETVSC_RCD_WATERMARK 80 |
1031 | ||
1032 | /* Get next available slot */ | |
1033 | static inline struct recv_comp_data *get_recv_comp_slot( | |
1034 | struct netvsc_device *nvdev, struct vmbus_channel *channel, u16 q_idx) | |
1035 | { | |
b8b835a8 | 1036 | struct multi_recv_comp *mrc = &nvdev->chan_table[q_idx].mrc; |
c0b558e5 HZ |
1037 | u32 filled, avail, next; |
1038 | struct recv_comp_data *rcd; | |
1039 | ||
b8b835a8 | 1040 | if (unlikely(!nvdev->recv_section)) |
c0b558e5 HZ |
1041 | return NULL; |
1042 | ||
b8b835a8 | 1043 | if (unlikely(!mrc->buf)) |
c0b558e5 HZ |
1044 | return NULL; |
1045 | ||
1046 | if (atomic_read(&nvdev->num_outstanding_recvs) > | |
1047 | nvdev->recv_section->num_sub_allocs * NETVSC_RCD_WATERMARK / 100) | |
1048 | netvsc_chk_recv_comp(nvdev, channel, q_idx); | |
1049 | ||
1050 | count_recv_comp_slot(nvdev, q_idx, &filled, &avail); | |
1051 | if (!avail) | |
1052 | return NULL; | |
1053 | ||
b8b835a8 | 1054 | next = mrc->next; |
1055 | rcd = mrc->buf + next * sizeof(struct recv_comp_data); | |
1056 | mrc->next = (next + 1) % NETVSC_RECVSLOT_MAX; | |
c0b558e5 HZ |
1057 | |
1058 | atomic_inc(&nvdev->num_outstanding_recvs); | |
1059 | ||
1060 | return rcd; | |
1061 | } | |
1062 | ||
15a863bf | 1063 | static int netvsc_receive(struct net_device *ndev, |
dc54a08c | 1064 | struct netvsc_device *net_device, |
1065 | struct net_device_context *net_device_ctx, | |
1066 | struct hv_device *device, | |
1067 | struct vmbus_channel *channel, | |
f3dd3f47 | 1068 | const struct vmpacket_descriptor *desc, |
dc54a08c | 1069 | struct nvsp_message *nvsp) |
fceaf24a | 1070 | { |
f3dd3f47 | 1071 | const struct vmtransfer_page_packet_header *vmxferpage_packet |
1072 | = container_of(desc, const struct vmtransfer_page_packet_header, d); | |
15a863bf | 1073 | u16 q_idx = channel->offermsg.offer.sub_channel_index; |
dc54a08c | 1074 | char *recv_buf = net_device->recv_buf; |
4baab261 | 1075 | u32 status = NVSP_STAT_SUCCESS; |
45326342 HZ |
1076 | int i; |
1077 | int count = 0; | |
c0b558e5 | 1078 | int ret; |
779b4d17 | 1079 | |
454f18a9 | 1080 | /* Make sure this is a valid nvsp packet */ |
dc54a08c | 1081 | if (unlikely(nvsp->hdr.msg_type != NVSP_MSG1_TYPE_SEND_RNDIS_PKT)) { |
1082 | netif_err(net_device_ctx, rx_err, ndev, | |
1083 | "Unknown nvsp packet type received %u\n", | |
1084 | nvsp->hdr.msg_type); | |
15a863bf | 1085 | return 0; |
fceaf24a HJ |
1086 | } |
1087 | ||
dc54a08c | 1088 | if (unlikely(vmxferpage_packet->xfer_pageset_id != NETVSC_RECEIVE_BUFFER_ID)) { |
1089 | netif_err(net_device_ctx, rx_err, ndev, | |
1090 | "Invalid xfer page set id - expecting %x got %x\n", | |
1091 | NETVSC_RECEIVE_BUFFER_ID, | |
1092 | vmxferpage_packet->xfer_pageset_id); | |
15a863bf | 1093 | return 0; |
fceaf24a HJ |
1094 | } |
1095 | ||
4baab261 | 1096 | count = vmxferpage_packet->range_cnt; |
fceaf24a | 1097 | |
454f18a9 | 1098 | /* Each range represents 1 RNDIS pkt that contains 1 ethernet frame */ |
4baab261 | 1099 | for (i = 0; i < count; i++) { |
dc54a08c | 1100 | void *data = recv_buf |
1101 | + vmxferpage_packet->ranges[i].byte_offset; | |
1102 | u32 buflen = vmxferpage_packet->ranges[i].byte_count; | |
fceaf24a | 1103 | |
454f18a9 | 1104 | /* Pass it to the upper layer */ |
dc54a08c | 1105 | status = rndis_filter_receive(ndev, net_device, device, |
1106 | channel, data, buflen); | |
fceaf24a HJ |
1107 | } |
1108 | ||
15a863bf | 1109 | if (net_device->chan_table[q_idx].mrc.buf) { |
1110 | struct recv_comp_data *rcd; | |
1111 | ||
1112 | rcd = get_recv_comp_slot(net_device, channel, q_idx); | |
1113 | if (rcd) { | |
1114 | rcd->tid = vmxferpage_packet->d.trans_id; | |
1115 | rcd->status = status; | |
1116 | } else { | |
1117 | netdev_err(ndev, "Recv_comp full buf q:%hd, tid:%llx\n", | |
1118 | q_idx, vmxferpage_packet->d.trans_id); | |
1119 | } | |
1120 | } else { | |
c0b558e5 HZ |
1121 | ret = netvsc_send_recv_completion(channel, |
1122 | vmxferpage_packet->d.trans_id, | |
1123 | status); | |
1124 | if (ret) | |
1125 | netdev_err(ndev, "Recv_comp q:%hd, tid:%llx, err:%d\n", | |
1126 | q_idx, vmxferpage_packet->d.trans_id, ret); | |
c0b558e5 | 1127 | } |
15a863bf | 1128 | return count; |
fceaf24a HJ |
1129 | } |
1130 | ||
5b54dac8 | 1131 | static void netvsc_send_table(struct hv_device *hdev, |
71790a27 | 1132 | struct nvsp_message *nvmsg) |
5b54dac8 | 1133 | { |
0a1275ca | 1134 | struct net_device *ndev = hv_get_drvdata(hdev); |
7ce10124 | 1135 | struct net_device_context *net_device_ctx = netdev_priv(ndev); |
5b54dac8 HZ |
1136 | int i; |
1137 | u32 count, *tab; | |
1138 | ||
5b54dac8 HZ |
1139 | count = nvmsg->msg.v5_msg.send_table.count; |
1140 | if (count != VRSS_SEND_TAB_SIZE) { | |
1141 | netdev_err(ndev, "Received wrong send-table size:%u\n", count); | |
1142 | return; | |
1143 | } | |
1144 | ||
1145 | tab = (u32 *)((unsigned long)&nvmsg->msg.v5_msg.send_table + | |
1146 | nvmsg->msg.v5_msg.send_table.offset); | |
1147 | ||
1148 | for (i = 0; i < count; i++) | |
7ce10124 | 1149 | net_device_ctx->tx_send_table[i] = tab[i]; |
5b54dac8 HZ |
1150 | } |
1151 | ||
f9a7da91 | 1152 | static void netvsc_send_vf(struct net_device_context *net_device_ctx, |
71790a27 HZ |
1153 | struct nvsp_message *nvmsg) |
1154 | { | |
f9a7da91 VK |
1155 | net_device_ctx->vf_alloc = nvmsg->msg.v4_msg.vf_assoc.allocated; |
1156 | net_device_ctx->vf_serial = nvmsg->msg.v4_msg.vf_assoc.serial; | |
71790a27 HZ |
1157 | } |
1158 | ||
1159 | static inline void netvsc_receive_inband(struct hv_device *hdev, | |
f9a7da91 VK |
1160 | struct net_device_context *net_device_ctx, |
1161 | struct nvsp_message *nvmsg) | |
71790a27 HZ |
1162 | { |
1163 | switch (nvmsg->hdr.msg_type) { | |
1164 | case NVSP_MSG5_TYPE_SEND_INDIRECTION_TABLE: | |
1165 | netvsc_send_table(hdev, nvmsg); | |
1166 | break; | |
1167 | ||
1168 | case NVSP_MSG4_TYPE_SEND_VF_ASSOCIATION: | |
f9a7da91 | 1169 | netvsc_send_vf(net_device_ctx, nvmsg); |
71790a27 HZ |
1170 | break; |
1171 | } | |
1172 | } | |
1173 | ||
15a863bf | 1174 | static int netvsc_process_raw_pkt(struct hv_device *device, |
1175 | struct vmbus_channel *channel, | |
1176 | struct netvsc_device *net_device, | |
1177 | struct net_device *ndev, | |
f9645430 | 1178 | const struct vmpacket_descriptor *desc, |
1179 | int budget) | |
99a50bb1 | 1180 | { |
f9a7da91 | 1181 | struct net_device_context *net_device_ctx = netdev_priv(ndev); |
f3dd3f47 | 1182 | struct nvsp_message *nvmsg = hv_pkt_data(desc); |
99a50bb1 S |
1183 | |
1184 | switch (desc->type) { | |
1185 | case VM_PKT_COMP: | |
f9645430 | 1186 | netvsc_send_completion(net_device, channel, device, |
1187 | desc, budget); | |
99a50bb1 S |
1188 | break; |
1189 | ||
1190 | case VM_PKT_DATA_USING_XFER_PAGES: | |
15a863bf | 1191 | return netvsc_receive(ndev, net_device, net_device_ctx, |
1192 | device, channel, desc, nvmsg); | |
99a50bb1 S |
1193 | break; |
1194 | ||
1195 | case VM_PKT_DATA_INBAND: | |
f9a7da91 | 1196 | netvsc_receive_inband(device, net_device_ctx, nvmsg); |
99a50bb1 S |
1197 | break; |
1198 | ||
1199 | default: | |
1200 | netdev_err(ndev, "unhandled packet type %d, tid %llx\n", | |
f4f1c23d | 1201 | desc->type, desc->trans_id); |
99a50bb1 S |
1202 | break; |
1203 | } | |
15a863bf | 1204 | |
1205 | return 0; | |
1206 | } | |
1207 | ||
1208 | static struct hv_device *netvsc_channel_to_device(struct vmbus_channel *channel) | |
1209 | { | |
1210 | struct vmbus_channel *primary = channel->primary_channel; | |
1211 | ||
1212 | return primary ? primary->device_obj : channel->device_obj; | |
1213 | } | |
1214 | ||
262b7f14 | 1215 | /* Network processing softirq |
1216 | * Process data in incoming ring buffer from host | |
1217 | * Stops when ring is empty or budget is met or exceeded. | |
1218 | */ | |
15a863bf | 1219 | int netvsc_poll(struct napi_struct *napi, int budget) |
1220 | { | |
1221 | struct netvsc_channel *nvchan | |
1222 | = container_of(napi, struct netvsc_channel, napi); | |
1223 | struct vmbus_channel *channel = nvchan->channel; | |
1224 | struct hv_device *device = netvsc_channel_to_device(channel); | |
1225 | u16 q_idx = channel->offermsg.offer.sub_channel_index; | |
1226 | struct net_device *ndev = hv_get_drvdata(device); | |
1227 | struct netvsc_device *net_device = net_device_to_netvsc_device(ndev); | |
15a863bf | 1228 | int work_done = 0; |
1229 | ||
f4f1c23d | 1230 | /* If starting a new interval */ |
1231 | if (!nvchan->desc) | |
1232 | nvchan->desc = hv_pkt_iter_first(channel); | |
15a863bf | 1233 | |
f4f1c23d | 1234 | while (nvchan->desc && work_done < budget) { |
1235 | work_done += netvsc_process_raw_pkt(device, channel, net_device, | |
f9645430 | 1236 | ndev, nvchan->desc, budget); |
f4f1c23d | 1237 | nvchan->desc = hv_pkt_iter_next(channel, nvchan->desc); |
15a863bf | 1238 | } |
15a863bf | 1239 | |
f4f1c23d | 1240 | /* If receive ring was exhausted |
1241 | * and not doing busy poll | |
262b7f14 | 1242 | * then re-enable host interrupts |
1243 | * and reschedule if ring is not empty. | |
1244 | */ | |
15a863bf | 1245 | if (work_done < budget && |
1246 | napi_complete_done(napi, work_done) && | |
1247 | hv_end_read(&channel->inbound) != 0) | |
1248 | napi_reschedule(napi); | |
1249 | ||
1250 | netvsc_chk_recv_comp(net_device, channel, q_idx); | |
f4f1c23d | 1251 | |
1252 | /* Driver may overshoot since multiple packets per descriptor */ | |
1253 | return min(work_done, budget); | |
99a50bb1 S |
1254 | } |
1255 | ||
262b7f14 | 1256 | /* Call back when data is available in host ring buffer. |
1257 | * Processing is deferred until network softirq (NAPI) | |
1258 | */ | |
5b54dac8 | 1259 | void netvsc_channel_cb(void *context) |
fceaf24a | 1260 | { |
6de38af6 | 1261 | struct netvsc_channel *nvchan = context; |
0b307ebd | 1262 | |
f4f1c23d | 1263 | if (napi_schedule_prep(&nvchan->napi)) { |
1264 | /* disable interupts from host */ | |
1265 | hv_begin_read(&nvchan->channel->inbound); | |
0d6dd357 | 1266 | |
f4f1c23d | 1267 | __napi_schedule(&nvchan->napi); |
1268 | } | |
fceaf24a | 1269 | } |
af24ce42 | 1270 | |
b637e023 HZ |
1271 | /* |
1272 | * netvsc_device_add - Callback when the device belonging to this | |
1273 | * driver is added | |
1274 | */ | |
2c7f83ca | 1275 | int netvsc_device_add(struct hv_device *device, |
1276 | const struct netvsc_device_info *device_info) | |
b637e023 | 1277 | { |
88098834 | 1278 | int i, ret = 0; |
2c7f83ca | 1279 | int ring_size = device_info->ring_size; |
b637e023 | 1280 | struct netvsc_device *net_device; |
88098834 VK |
1281 | struct net_device *ndev = hv_get_drvdata(device); |
1282 | struct net_device_context *net_device_ctx = netdev_priv(ndev); | |
b637e023 | 1283 | |
88098834 | 1284 | net_device = alloc_net_device(); |
b1c84927 DC |
1285 | if (!net_device) |
1286 | return -ENOMEM; | |
b637e023 | 1287 | |
5b54dac8 HZ |
1288 | net_device->ring_size = ring_size; |
1289 | ||
15a863bf | 1290 | /* Because the device uses NAPI, all the interrupt batching and |
1291 | * control is done via Net softirq, not the channel handling | |
1292 | */ | |
1293 | set_channel_read_mode(device->channel, HV_CALL_ISR); | |
1294 | ||
bffb1842 S |
1295 | /* If we're reopening the device we may have multiple queues, fill the |
1296 | * chn_table with the default channel to use it before subchannels are | |
1297 | * opened. | |
1298 | * Initialize the channel state before we open; | |
1299 | * we can be interrupted as soon as we open the channel. | |
1300 | */ | |
1301 | ||
1302 | for (i = 0; i < VRSS_CHANNEL_MAX; i++) { | |
1303 | struct netvsc_channel *nvchan = &net_device->chan_table[i]; | |
1304 | ||
1305 | nvchan->channel = device->channel; | |
4a0dee1f FF |
1306 | u64_stats_init(&nvchan->tx_stats.syncp); |
1307 | u64_stats_init(&nvchan->rx_stats.syncp); | |
bffb1842 S |
1308 | } |
1309 | ||
2be0f264 | 1310 | /* Enable NAPI handler before init callbacks */ |
1311 | netif_napi_add(ndev, &net_device->chan_table[0].napi, | |
1312 | netvsc_poll, NAPI_POLL_WEIGHT); | |
1313 | ||
b637e023 | 1314 | /* Open the channel */ |
aae23986 S |
1315 | ret = vmbus_open(device->channel, ring_size * PAGE_SIZE, |
1316 | ring_size * PAGE_SIZE, NULL, 0, | |
6de38af6 | 1317 | netvsc_channel_cb, |
1318 | net_device->chan_table); | |
b637e023 HZ |
1319 | |
1320 | if (ret != 0) { | |
2be0f264 | 1321 | netif_napi_del(&net_device->chan_table[0].napi); |
d9871158 | 1322 | netdev_err(ndev, "unable to open channel: %d\n", ret); |
b637e023 HZ |
1323 | goto cleanup; |
1324 | } | |
1325 | ||
1326 | /* Channel is opened */ | |
93ba2222 | 1327 | netdev_dbg(ndev, "hv_netvsc channel opened successfully\n"); |
b637e023 | 1328 | |
15a863bf | 1329 | napi_enable(&net_device->chan_table[0].napi); |
88098834 VK |
1330 | |
1331 | /* Writing nvdev pointer unlocks netvsc_send(), make sure chn_table is | |
1332 | * populated. | |
1333 | */ | |
545a8e79 | 1334 | rcu_assign_pointer(net_device_ctx->nvdev, net_device); |
5b54dac8 | 1335 | |
b637e023 | 1336 | /* Connect with the NetVsp */ |
95790837 | 1337 | ret = netvsc_connect_vsp(device, net_device); |
b637e023 | 1338 | if (ret != 0) { |
d9871158 | 1339 | netdev_err(ndev, |
c909ebbd | 1340 | "unable to connect to NetVSP - %d\n", ret); |
b637e023 HZ |
1341 | goto close; |
1342 | } | |
1343 | ||
1344 | return ret; | |
1345 | ||
1346 | close: | |
76bb5db5 | 1347 | netif_napi_del(&net_device->chan_table[0].napi); |
15a863bf | 1348 | |
b637e023 HZ |
1349 | /* Now, we can close the channel safely */ |
1350 | vmbus_close(device->channel); | |
1351 | ||
1352 | cleanup: | |
545a8e79 | 1353 | free_netvsc_device(&net_device->rcu); |
b637e023 HZ |
1354 | |
1355 | return ret; | |
95790837 | 1356 | |
b637e023 | 1357 | } |