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 | |
14 | * this program; if not, write to the Free Software Foundation, Inc., 59 Temple | |
15 | * Place - Suite 330, Boston, MA 02111-1307 USA. | |
16 | * | |
17 | * Authors: | |
d0e94d17 | 18 | * Haiyang Zhang <haiyangz@microsoft.com> |
fceaf24a | 19 | * Hank Janssen <hjanssen@microsoft.com> |
fceaf24a | 20 | */ |
eb335bc4 HJ |
21 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
22 | ||
fceaf24a HJ |
23 | #include <linux/init.h> |
24 | #include <linux/module.h> | |
25 | #include <linux/highmem.h> | |
26 | #include <linux/device.h> | |
fceaf24a | 27 | #include <linux/io.h> |
fceaf24a HJ |
28 | #include <linux/delay.h> |
29 | #include <linux/netdevice.h> | |
30 | #include <linux/inetdevice.h> | |
31 | #include <linux/etherdevice.h> | |
32 | #include <linux/skbuff.h> | |
33 | #include <linux/in.h> | |
5a0e3ad6 | 34 | #include <linux/slab.h> |
06e719d8 S |
35 | #include <linux/dmi.h> |
36 | #include <linux/pci.h> | |
fceaf24a HJ |
37 | #include <net/arp.h> |
38 | #include <net/route.h> | |
39 | #include <net/sock.h> | |
40 | #include <net/pkt_sched.h> | |
e3fe0bb6 | 41 | #include "hv_api.h" |
645954c5 | 42 | #include "logging.h" |
2d82f6c7 | 43 | #include "version_info.h" |
870cde80 | 44 | #include "vmbus.h" |
a82c7a2a | 45 | #include "netvsc_api.h" |
fceaf24a | 46 | |
fceaf24a | 47 | struct net_device_context { |
02fafbc6 | 48 | /* point back to our device context */ |
6bad88da | 49 | struct hv_device *device_ctx; |
b220f5f9 | 50 | unsigned long avail; |
c996edcf | 51 | struct work_struct work; |
fceaf24a HJ |
52 | }; |
53 | ||
fceaf24a | 54 | |
b220f5f9 SH |
55 | #define PACKET_PAGES_LOWATER 8 |
56 | /* Need this many pages to handle worst case fragmented packet */ | |
57 | #define PACKET_PAGES_HIWATER (MAX_SKB_FRAGS + 2) | |
58 | ||
99c8da0f | 59 | static int ring_size = 128; |
450d7a4b SH |
60 | module_param(ring_size, int, S_IRUGO); |
61 | MODULE_PARM_DESC(ring_size, "Ring buffer size (# of pages)"); | |
fceaf24a | 62 | |
0ff36f69 BP |
63 | /* no-op so the netdev core doesn't return -EINVAL when modifying the the |
64 | * multicast address list in SIOCADDMULTI. hv is setup to get all multicast | |
65 | * when it calls RndisFilterOnOpen() */ | |
4e9bfefa | 66 | static void netvsc_set_multicast_list(struct net_device *net) |
fceaf24a HJ |
67 | { |
68 | } | |
69 | ||
fceaf24a HJ |
70 | static int netvsc_open(struct net_device *net) |
71 | { | |
fceaf24a | 72 | struct net_device_context *net_device_ctx = netdev_priv(net); |
6bad88da | 73 | struct hv_device *device_obj = net_device_ctx->device_ctx; |
02fafbc6 | 74 | int ret = 0; |
fceaf24a | 75 | |
02fafbc6 | 76 | if (netif_carrier_ok(net)) { |
454f18a9 | 77 | /* Open up the device */ |
9c26aa0d | 78 | ret = rndis_filter_open(device_obj); |
02fafbc6 | 79 | if (ret != 0) { |
eb335bc4 HJ |
80 | netdev_err(net, "unable to open device (ret %d).\n", |
81 | ret); | |
fceaf24a HJ |
82 | return ret; |
83 | } | |
84 | ||
85 | netif_start_queue(net); | |
02fafbc6 | 86 | } else { |
eb335bc4 | 87 | netdev_err(net, "unable to open device...link is down.\n"); |
fceaf24a HJ |
88 | } |
89 | ||
fceaf24a HJ |
90 | return ret; |
91 | } | |
92 | ||
fceaf24a HJ |
93 | static int netvsc_close(struct net_device *net) |
94 | { | |
fceaf24a | 95 | struct net_device_context *net_device_ctx = netdev_priv(net); |
6bad88da | 96 | struct hv_device *device_obj = net_device_ctx->device_ctx; |
02fafbc6 | 97 | int ret; |
fceaf24a | 98 | |
fceaf24a HJ |
99 | netif_stop_queue(net); |
100 | ||
9c26aa0d | 101 | ret = rndis_filter_close(device_obj); |
fceaf24a | 102 | if (ret != 0) |
eb335bc4 | 103 | netdev_err(net, "unable to close device (ret %d).\n", ret); |
fceaf24a | 104 | |
fceaf24a HJ |
105 | return ret; |
106 | } | |
107 | ||
fceaf24a HJ |
108 | static void netvsc_xmit_completion(void *context) |
109 | { | |
4193d4f4 | 110 | struct hv_netvsc_packet *packet = (struct hv_netvsc_packet *)context; |
02fafbc6 | 111 | struct sk_buff *skb = (struct sk_buff *) |
72a2f5bd | 112 | (unsigned long)packet->completion.send.send_completion_tid; |
fceaf24a | 113 | |
fceaf24a HJ |
114 | kfree(packet); |
115 | ||
02fafbc6 | 116 | if (skb) { |
7880fc54 | 117 | struct net_device *net = skb->dev; |
b220f5f9 SH |
118 | struct net_device_context *net_device_ctx = netdev_priv(net); |
119 | unsigned int num_pages = skb_shinfo(skb)->nr_frags + 2; | |
fceaf24a | 120 | |
b220f5f9 | 121 | dev_kfree_skb_any(skb); |
fceaf24a | 122 | |
581de3b0 TH |
123 | net_device_ctx->avail += num_pages; |
124 | if (net_device_ctx->avail >= PACKET_PAGES_HIWATER) | |
b220f5f9 | 125 | netif_wake_queue(net); |
fceaf24a | 126 | } |
fceaf24a HJ |
127 | } |
128 | ||
02fafbc6 | 129 | static int netvsc_start_xmit(struct sk_buff *skb, struct net_device *net) |
fceaf24a | 130 | { |
fceaf24a | 131 | struct net_device_context *net_device_ctx = netdev_priv(net); |
779b4d17 S |
132 | struct netvsc_driver *net_drv_obj = |
133 | drv_to_netvscdrv(net_device_ctx->device_ctx->device.driver); | |
4193d4f4 | 134 | struct hv_netvsc_packet *packet; |
02fafbc6 | 135 | int ret; |
6048718d | 136 | unsigned int i, num_pages; |
fceaf24a | 137 | |
6048718d SH |
138 | /* Add 1 for skb->data and additional one for RNDIS */ |
139 | num_pages = skb_shinfo(skb)->nr_frags + 1 + 1; | |
b220f5f9 SH |
140 | if (num_pages > net_device_ctx->avail) |
141 | return NETDEV_TX_BUSY; | |
fceaf24a | 142 | |
454f18a9 | 143 | /* Allocate a netvsc packet based on # of frags. */ |
02fafbc6 | 144 | packet = kzalloc(sizeof(struct hv_netvsc_packet) + |
6048718d | 145 | (num_pages * sizeof(struct hv_page_buffer)) + |
72a2f5bd | 146 | net_drv_obj->req_ext_size, GFP_ATOMIC); |
02fafbc6 | 147 | if (!packet) { |
b220f5f9 | 148 | /* out of memory, silently drop packet */ |
eb335bc4 | 149 | netdev_err(net, "unable to allocate hv_netvsc_packet\n"); |
b220f5f9 SH |
150 | |
151 | dev_kfree_skb(skb); | |
152 | net->stats.tx_dropped++; | |
153 | return NETDEV_TX_OK; | |
fceaf24a HJ |
154 | } |
155 | ||
72a2f5bd | 156 | packet->extension = (void *)(unsigned long)packet + |
02fafbc6 | 157 | sizeof(struct hv_netvsc_packet) + |
6048718d | 158 | (num_pages * sizeof(struct hv_page_buffer)); |
fceaf24a | 159 | |
454f18a9 | 160 | /* Setup the rndis header */ |
72a2f5bd | 161 | packet->page_buf_cnt = num_pages; |
fceaf24a | 162 | |
454f18a9 BP |
163 | /* TODO: Flush all write buffers/ memory fence ??? */ |
164 | /* wmb(); */ | |
fceaf24a | 165 | |
454f18a9 | 166 | /* Initialize it from the skb */ |
72a2f5bd | 167 | packet->total_data_buflen = skb->len; |
fceaf24a | 168 | |
6048718d | 169 | /* Start filling in the page buffers starting after RNDIS buffer. */ |
ca623ad3 HZ |
170 | packet->page_buf[1].pfn = virt_to_phys(skb->data) >> PAGE_SHIFT; |
171 | packet->page_buf[1].offset | |
6048718d | 172 | = (unsigned long)skb->data & (PAGE_SIZE - 1); |
ca623ad3 | 173 | packet->page_buf[1].len = skb_headlen(skb); |
6048718d SH |
174 | |
175 | /* Additional fragments are after SKB data */ | |
176 | for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { | |
177 | skb_frag_t *f = &skb_shinfo(skb)->frags[i]; | |
178 | ||
ca623ad3 HZ |
179 | packet->page_buf[i+2].pfn = page_to_pfn(f->page); |
180 | packet->page_buf[i+2].offset = f->page_offset; | |
181 | packet->page_buf[i+2].len = f->size; | |
fceaf24a HJ |
182 | } |
183 | ||
454f18a9 | 184 | /* Set the completion routine */ |
72a2f5bd HZ |
185 | packet->completion.send.send_completion = netvsc_xmit_completion; |
186 | packet->completion.send.send_completion_ctx = packet; | |
187 | packet->completion.send.send_completion_tid = (unsigned long)skb; | |
fceaf24a | 188 | |
6bad88da | 189 | ret = net_drv_obj->send(net_device_ctx->device_ctx, |
02fafbc6 | 190 | packet); |
02fafbc6 | 191 | if (ret == 0) { |
b852fdce SH |
192 | net->stats.tx_bytes += skb->len; |
193 | net->stats.tx_packets++; | |
fceaf24a | 194 | |
581de3b0 TH |
195 | net_device_ctx->avail -= num_pages; |
196 | if (net_device_ctx->avail < PACKET_PAGES_LOWATER) | |
b220f5f9 SH |
197 | netif_stop_queue(net); |
198 | } else { | |
199 | /* we are shutting down or bus overloaded, just drop packet */ | |
b852fdce | 200 | net->stats.tx_dropped++; |
b220f5f9 | 201 | netvsc_xmit_completion(packet); |
fceaf24a HJ |
202 | } |
203 | ||
b220f5f9 | 204 | return NETDEV_TX_OK; |
fceaf24a HJ |
205 | } |
206 | ||
3e189519 | 207 | /* |
02fafbc6 GKH |
208 | * netvsc_linkstatus_callback - Link up/down notification |
209 | */ | |
210 | static void netvsc_linkstatus_callback(struct hv_device *device_obj, | |
211 | unsigned int status) | |
fceaf24a | 212 | { |
6bad88da | 213 | struct net_device *net = dev_get_drvdata(&device_obj->device); |
c996edcf | 214 | struct net_device_context *ndev_ctx; |
fceaf24a | 215 | |
02fafbc6 | 216 | if (!net) { |
eb335bc4 HJ |
217 | netdev_err(net, "got link status but net device " |
218 | "not initialized yet\n"); | |
fceaf24a HJ |
219 | return; |
220 | } | |
221 | ||
02fafbc6 | 222 | if (status == 1) { |
fceaf24a HJ |
223 | netif_carrier_on(net); |
224 | netif_wake_queue(net); | |
7c161d0b | 225 | netif_notify_peers(net); |
c996edcf HZ |
226 | ndev_ctx = netdev_priv(net); |
227 | schedule_work(&ndev_ctx->work); | |
02fafbc6 | 228 | } else { |
fceaf24a HJ |
229 | netif_carrier_off(net); |
230 | netif_stop_queue(net); | |
231 | } | |
fceaf24a HJ |
232 | } |
233 | ||
3e189519 HJ |
234 | /* |
235 | * netvsc_recv_callback - Callback when we receive a packet from the | |
236 | * "wire" on the specified device. | |
02fafbc6 GKH |
237 | */ |
238 | static int netvsc_recv_callback(struct hv_device *device_obj, | |
239 | struct hv_netvsc_packet *packet) | |
fceaf24a | 240 | { |
6bad88da | 241 | struct net_device *net = dev_get_drvdata(&device_obj->device); |
fceaf24a HJ |
242 | struct sk_buff *skb; |
243 | void *data; | |
02fafbc6 | 244 | int i; |
fceaf24a HJ |
245 | unsigned long flags; |
246 | ||
02fafbc6 | 247 | if (!net) { |
eb335bc4 HJ |
248 | netdev_err(net, "got receive callback but net device" |
249 | " not initialized yet\n"); | |
fceaf24a HJ |
250 | return 0; |
251 | } | |
252 | ||
9495c282 | 253 | /* Allocate a skb - TODO direct I/O to pages? */ |
72a2f5bd | 254 | skb = netdev_alloc_skb_ip_align(net, packet->total_data_buflen); |
9495c282 SH |
255 | if (unlikely(!skb)) { |
256 | ++net->stats.rx_dropped; | |
257 | return 0; | |
258 | } | |
fceaf24a | 259 | |
454f18a9 | 260 | /* for kmap_atomic */ |
fceaf24a HJ |
261 | local_irq_save(flags); |
262 | ||
02fafbc6 GKH |
263 | /* |
264 | * Copy to skb. This copy is needed here since the memory pointed by | |
265 | * hv_netvsc_packet cannot be deallocated | |
266 | */ | |
72a2f5bd | 267 | for (i = 0; i < packet->page_buf_cnt; i++) { |
ca623ad3 | 268 | data = kmap_atomic(pfn_to_page(packet->page_buf[i].pfn), |
02fafbc6 GKH |
269 | KM_IRQ1); |
270 | data = (void *)(unsigned long)data + | |
ca623ad3 | 271 | packet->page_buf[i].offset; |
02fafbc6 | 272 | |
ca623ad3 HZ |
273 | memcpy(skb_put(skb, packet->page_buf[i].len), data, |
274 | packet->page_buf[i].len); | |
02fafbc6 GKH |
275 | |
276 | kunmap_atomic((void *)((unsigned long)data - | |
ca623ad3 | 277 | packet->page_buf[i].offset), KM_IRQ1); |
fceaf24a HJ |
278 | } |
279 | ||
280 | local_irq_restore(flags); | |
281 | ||
282 | skb->protocol = eth_type_trans(skb, net); | |
fceaf24a HJ |
283 | skb->ip_summed = CHECKSUM_NONE; |
284 | ||
9495c282 SH |
285 | net->stats.rx_packets++; |
286 | net->stats.rx_bytes += skb->len; | |
287 | ||
02fafbc6 GKH |
288 | /* |
289 | * Pass the skb back up. Network stack will deallocate the skb when it | |
9495c282 SH |
290 | * is done. |
291 | * TODO - use NAPI? | |
02fafbc6 | 292 | */ |
9495c282 | 293 | netif_rx(skb); |
fceaf24a | 294 | |
fceaf24a HJ |
295 | return 0; |
296 | } | |
297 | ||
f82f4ad7 SH |
298 | static void netvsc_get_drvinfo(struct net_device *net, |
299 | struct ethtool_drvinfo *info) | |
300 | { | |
301 | strcpy(info->driver, "hv_netvsc"); | |
302 | strcpy(info->version, HV_DRV_VERSION); | |
303 | strcpy(info->fw_version, "N/A"); | |
304 | } | |
305 | ||
306 | static const struct ethtool_ops ethtool_ops = { | |
307 | .get_drvinfo = netvsc_get_drvinfo, | |
f82f4ad7 SH |
308 | .get_link = ethtool_op_get_link, |
309 | }; | |
310 | ||
df2fff28 GKH |
311 | static const struct net_device_ops device_ops = { |
312 | .ndo_open = netvsc_open, | |
313 | .ndo_stop = netvsc_close, | |
314 | .ndo_start_xmit = netvsc_start_xmit, | |
df2fff28 | 315 | .ndo_set_multicast_list = netvsc_set_multicast_list, |
b681b588 HZ |
316 | .ndo_change_mtu = eth_change_mtu, |
317 | .ndo_validate_addr = eth_validate_addr, | |
318 | .ndo_set_mac_address = eth_mac_addr, | |
df2fff28 GKH |
319 | }; |
320 | ||
c996edcf HZ |
321 | /* |
322 | * Send GARP packet to network peers after migrations. | |
323 | * After Quick Migration, the network is not immediately operational in the | |
324 | * current context when receiving RNDIS_STATUS_MEDIA_CONNECT event. So, add | |
325 | * another netif_notify_peers() into a scheduled work, otherwise GARP packet | |
326 | * will not be sent after quick migration, and cause network disconnection. | |
327 | */ | |
328 | static void netvsc_send_garp(struct work_struct *w) | |
329 | { | |
330 | struct net_device_context *ndev_ctx; | |
331 | struct net_device *net; | |
332 | ||
333 | msleep(20); | |
334 | ndev_ctx = container_of(w, struct net_device_context, work); | |
335 | net = dev_get_drvdata(&ndev_ctx->device_ctx->device); | |
336 | netif_notify_peers(net); | |
337 | } | |
338 | ||
339 | ||
9efd21e1 | 340 | static int netvsc_probe(struct hv_device *dev) |
df2fff28 | 341 | { |
df2fff28 GKH |
342 | struct net_device *net = NULL; |
343 | struct net_device_context *net_device_ctx; | |
344 | struct netvsc_device_info device_info; | |
345 | int ret; | |
346 | ||
546d9e10 | 347 | net = alloc_etherdev(sizeof(struct net_device_context)); |
df2fff28 GKH |
348 | if (!net) |
349 | return -1; | |
350 | ||
351 | /* Set initial state */ | |
352 | netif_carrier_off(net); | |
df2fff28 GKH |
353 | |
354 | net_device_ctx = netdev_priv(net); | |
9efd21e1 | 355 | net_device_ctx->device_ctx = dev; |
b220f5f9 | 356 | net_device_ctx->avail = ring_size; |
9efd21e1 | 357 | dev_set_drvdata(&dev->device, net); |
c996edcf | 358 | INIT_WORK(&net_device_ctx->work, netvsc_send_garp); |
df2fff28 GKH |
359 | |
360 | /* Notify the netvsc driver of the new device */ | |
bc2d5975 | 361 | ret = rndis_filte_device_add(dev, &device_info); |
df2fff28 GKH |
362 | if (ret != 0) { |
363 | free_netdev(net); | |
9efd21e1 | 364 | dev_set_drvdata(&dev->device, NULL); |
df2fff28 | 365 | |
eb335bc4 | 366 | netdev_err(net, "unable to add netvsc device (ret %d)\n", ret); |
df2fff28 GKH |
367 | return ret; |
368 | } | |
369 | ||
370 | /* | |
371 | * If carrier is still off ie we did not get a link status callback, | |
372 | * update it if necessary | |
373 | */ | |
374 | /* | |
375 | * FIXME: We should use a atomic or test/set instead to avoid getting | |
376 | * out of sync with the device's link status | |
377 | */ | |
378 | if (!netif_carrier_ok(net)) | |
72a2f5bd | 379 | if (!device_info.link_state) |
df2fff28 GKH |
380 | netif_carrier_on(net); |
381 | ||
72a2f5bd | 382 | memcpy(net->dev_addr, device_info.mac_adr, ETH_ALEN); |
df2fff28 GKH |
383 | |
384 | net->netdev_ops = &device_ops; | |
385 | ||
6048718d | 386 | /* TODO: Add GSO and Checksum offload */ |
877a344b | 387 | net->hw_features = NETIF_F_SG; |
6048718d SH |
388 | net->features = NETIF_F_SG; |
389 | ||
f82f4ad7 | 390 | SET_ETHTOOL_OPS(net, ðtool_ops); |
9efd21e1 | 391 | SET_NETDEV_DEV(net, &dev->device); |
df2fff28 GKH |
392 | |
393 | ret = register_netdev(net); | |
394 | if (ret != 0) { | |
395 | /* Remove the device and release the resource */ | |
58de3fc6 | 396 | rndis_filter_device_remove(dev); |
df2fff28 GKH |
397 | free_netdev(net); |
398 | } | |
399 | ||
df2fff28 GKH |
400 | return ret; |
401 | } | |
402 | ||
415b023a | 403 | static int netvsc_remove(struct hv_device *dev) |
df2fff28 | 404 | { |
415b023a | 405 | struct net_device *net = dev_get_drvdata(&dev->device); |
df2fff28 GKH |
406 | int ret; |
407 | ||
df2fff28 | 408 | if (net == NULL) { |
415b023a | 409 | dev_err(&dev->device, "No net device to remove\n"); |
df2fff28 GKH |
410 | return 0; |
411 | } | |
412 | ||
df2fff28 GKH |
413 | /* Stop outbound asap */ |
414 | netif_stop_queue(net); | |
415 | /* netif_carrier_off(net); */ | |
416 | ||
417 | unregister_netdev(net); | |
418 | ||
419 | /* | |
420 | * Call to the vsc driver to let it know that the device is being | |
421 | * removed | |
422 | */ | |
58de3fc6 | 423 | ret = rndis_filter_device_remove(dev); |
df2fff28 GKH |
424 | if (ret != 0) { |
425 | /* TODO: */ | |
eb335bc4 | 426 | netdev_err(net, "unable to remove vsc device (ret %d)\n", ret); |
df2fff28 GKH |
427 | } |
428 | ||
429 | free_netdev(net); | |
df2fff28 GKH |
430 | return ret; |
431 | } | |
432 | ||
fceaf24a HJ |
433 | static int netvsc_drv_exit_cb(struct device *dev, void *data) |
434 | { | |
435 | struct device **curr = (struct device **)data; | |
02fafbc6 | 436 | |
fceaf24a | 437 | *curr = dev; |
02fafbc6 GKH |
438 | /* stop iterating */ |
439 | return 1; | |
fceaf24a HJ |
440 | } |
441 | ||
f1542a66 S |
442 | /* The one and only one */ |
443 | static struct netvsc_driver netvsc_drv; | |
444 | ||
bd1de709 | 445 | static void netvsc_drv_exit(void) |
fceaf24a | 446 | { |
f752e9be | 447 | struct hv_driver *drv = &netvsc_drv.base; |
02fafbc6 | 448 | struct device *current_dev; |
2295ba2e | 449 | int ret; |
fceaf24a | 450 | |
02fafbc6 | 451 | while (1) { |
fceaf24a HJ |
452 | current_dev = NULL; |
453 | ||
454f18a9 | 454 | /* Get the device */ |
150f9398 | 455 | ret = driver_for_each_device(&drv->driver, NULL, |
02fafbc6 | 456 | ¤t_dev, netvsc_drv_exit_cb); |
2295ba2e | 457 | |
fceaf24a HJ |
458 | if (current_dev == NULL) |
459 | break; | |
460 | ||
454f18a9 | 461 | /* Initiate removal from the top-down */ |
eb335bc4 HJ |
462 | dev_err(current_dev, "unregistering device (%s)...\n", |
463 | dev_name(current_dev)); | |
fceaf24a HJ |
464 | |
465 | device_unregister(current_dev); | |
466 | } | |
467 | ||
150f9398 | 468 | vmbus_child_driver_unregister(&drv->driver); |
fceaf24a | 469 | |
fceaf24a HJ |
470 | return; |
471 | } | |
472 | ||
21707bed | 473 | static int netvsc_drv_init(int (*drv_init)(struct hv_driver *drv)) |
df2fff28 | 474 | { |
f752e9be S |
475 | struct netvsc_driver *net_drv_obj = &netvsc_drv; |
476 | struct hv_driver *drv = &netvsc_drv.base; | |
df2fff28 GKH |
477 | int ret; |
478 | ||
72a2f5bd HZ |
479 | net_drv_obj->ring_buf_size = ring_size * PAGE_SIZE; |
480 | net_drv_obj->recv_cb = netvsc_recv_callback; | |
481 | net_drv_obj->link_status_change = netvsc_linkstatus_callback; | |
df2fff28 GKH |
482 | |
483 | /* Callback to client driver to complete the initialization */ | |
72a2f5bd | 484 | drv_init(&net_drv_obj->base); |
df2fff28 | 485 | |
150f9398 | 486 | drv->driver.name = net_drv_obj->base.name; |
df2fff28 | 487 | |
9efd21e1 | 488 | drv->probe = netvsc_probe; |
415b023a | 489 | drv->remove = netvsc_remove; |
df2fff28 GKH |
490 | |
491 | /* The driver belongs to vmbus */ | |
150f9398 | 492 | ret = vmbus_child_driver_register(&drv->driver); |
df2fff28 | 493 | |
df2fff28 GKH |
494 | return ret; |
495 | } | |
496 | ||
06e719d8 S |
497 | static const struct dmi_system_id __initconst |
498 | hv_netvsc_dmi_table[] __maybe_unused = { | |
499 | { | |
500 | .ident = "Hyper-V", | |
501 | .matches = { | |
502 | DMI_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"), | |
503 | DMI_MATCH(DMI_PRODUCT_NAME, "Virtual Machine"), | |
504 | DMI_MATCH(DMI_BOARD_NAME, "Virtual Machine"), | |
505 | }, | |
506 | }, | |
507 | { }, | |
508 | }; | |
509 | MODULE_DEVICE_TABLE(dmi, hv_netvsc_dmi_table); | |
510 | ||
fceaf24a HJ |
511 | static int __init netvsc_init(void) |
512 | { | |
eb335bc4 | 513 | pr_info("initializing...."); |
fceaf24a | 514 | |
06e719d8 S |
515 | if (!dmi_check_system(hv_netvsc_dmi_table)) |
516 | return -ENODEV; | |
517 | ||
5a71ae30 | 518 | return netvsc_drv_init(netvsc_initialize); |
fceaf24a HJ |
519 | } |
520 | ||
521 | static void __exit netvsc_exit(void) | |
522 | { | |
fceaf24a | 523 | netvsc_drv_exit(); |
fceaf24a HJ |
524 | } |
525 | ||
06e719d8 S |
526 | static const struct pci_device_id __initconst |
527 | hv_netvsc_pci_table[] __maybe_unused = { | |
528 | { PCI_DEVICE(0x1414, 0x5353) }, /* VGA compatible controller */ | |
529 | { 0 } | |
530 | }; | |
531 | MODULE_DEVICE_TABLE(pci, hv_netvsc_pci_table); | |
532 | ||
26c14cc1 HJ |
533 | MODULE_LICENSE("GPL"); |
534 | MODULE_VERSION(HV_DRV_VERSION); | |
7880fc54 | 535 | MODULE_DESCRIPTION("Microsoft Hyper-V network driver"); |
fceaf24a HJ |
536 | |
537 | module_init(netvsc_init); | |
538 | module_exit(netvsc_exit); |