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 | |
454f18a9 | 63 | /* The one and only one */ |
d8de5dc6 | 64 | static struct netvsc_driver g_netvsc_drv; |
fceaf24a | 65 | |
0ff36f69 BP |
66 | /* no-op so the netdev core doesn't return -EINVAL when modifying the the |
67 | * multicast address list in SIOCADDMULTI. hv is setup to get all multicast | |
68 | * when it calls RndisFilterOnOpen() */ | |
4e9bfefa | 69 | static void netvsc_set_multicast_list(struct net_device *net) |
fceaf24a HJ |
70 | { |
71 | } | |
72 | ||
fceaf24a HJ |
73 | static int netvsc_open(struct net_device *net) |
74 | { | |
fceaf24a | 75 | struct net_device_context *net_device_ctx = netdev_priv(net); |
6bad88da | 76 | struct hv_device *device_obj = net_device_ctx->device_ctx; |
02fafbc6 | 77 | int ret = 0; |
fceaf24a | 78 | |
02fafbc6 | 79 | if (netif_carrier_ok(net)) { |
454f18a9 | 80 | /* Open up the device */ |
9c26aa0d | 81 | ret = rndis_filter_open(device_obj); |
02fafbc6 | 82 | if (ret != 0) { |
eb335bc4 HJ |
83 | netdev_err(net, "unable to open device (ret %d).\n", |
84 | ret); | |
fceaf24a HJ |
85 | return ret; |
86 | } | |
87 | ||
88 | netif_start_queue(net); | |
02fafbc6 | 89 | } else { |
eb335bc4 | 90 | netdev_err(net, "unable to open device...link is down.\n"); |
fceaf24a HJ |
91 | } |
92 | ||
fceaf24a HJ |
93 | return ret; |
94 | } | |
95 | ||
fceaf24a HJ |
96 | static int netvsc_close(struct net_device *net) |
97 | { | |
fceaf24a | 98 | struct net_device_context *net_device_ctx = netdev_priv(net); |
6bad88da | 99 | struct hv_device *device_obj = net_device_ctx->device_ctx; |
02fafbc6 | 100 | int ret; |
fceaf24a | 101 | |
fceaf24a HJ |
102 | netif_stop_queue(net); |
103 | ||
9c26aa0d | 104 | ret = rndis_filter_close(device_obj); |
fceaf24a | 105 | if (ret != 0) |
eb335bc4 | 106 | netdev_err(net, "unable to close device (ret %d).\n", ret); |
fceaf24a | 107 | |
fceaf24a HJ |
108 | return ret; |
109 | } | |
110 | ||
fceaf24a HJ |
111 | static void netvsc_xmit_completion(void *context) |
112 | { | |
4193d4f4 | 113 | struct hv_netvsc_packet *packet = (struct hv_netvsc_packet *)context; |
02fafbc6 | 114 | struct sk_buff *skb = (struct sk_buff *) |
72a2f5bd | 115 | (unsigned long)packet->completion.send.send_completion_tid; |
fceaf24a | 116 | |
fceaf24a HJ |
117 | kfree(packet); |
118 | ||
02fafbc6 | 119 | if (skb) { |
7880fc54 | 120 | struct net_device *net = skb->dev; |
b220f5f9 SH |
121 | struct net_device_context *net_device_ctx = netdev_priv(net); |
122 | unsigned int num_pages = skb_shinfo(skb)->nr_frags + 2; | |
fceaf24a | 123 | |
b220f5f9 | 124 | dev_kfree_skb_any(skb); |
fceaf24a | 125 | |
581de3b0 TH |
126 | net_device_ctx->avail += num_pages; |
127 | if (net_device_ctx->avail >= PACKET_PAGES_HIWATER) | |
b220f5f9 | 128 | netif_wake_queue(net); |
fceaf24a | 129 | } |
fceaf24a HJ |
130 | } |
131 | ||
02fafbc6 | 132 | static int netvsc_start_xmit(struct sk_buff *skb, struct net_device *net) |
fceaf24a | 133 | { |
fceaf24a | 134 | struct net_device_context *net_device_ctx = netdev_priv(net); |
150f9398 S |
135 | struct hv_driver *drv = |
136 | drv_to_hv_drv(net_device_ctx->device_ctx->device.driver); | |
d8de5dc6 | 137 | struct netvsc_driver *net_drv_obj = drv->priv; |
4193d4f4 | 138 | struct hv_netvsc_packet *packet; |
02fafbc6 | 139 | int ret; |
6048718d | 140 | unsigned int i, num_pages; |
fceaf24a | 141 | |
6048718d SH |
142 | /* Add 1 for skb->data and additional one for RNDIS */ |
143 | num_pages = skb_shinfo(skb)->nr_frags + 1 + 1; | |
b220f5f9 SH |
144 | if (num_pages > net_device_ctx->avail) |
145 | return NETDEV_TX_BUSY; | |
fceaf24a | 146 | |
454f18a9 | 147 | /* Allocate a netvsc packet based on # of frags. */ |
02fafbc6 | 148 | packet = kzalloc(sizeof(struct hv_netvsc_packet) + |
6048718d | 149 | (num_pages * sizeof(struct hv_page_buffer)) + |
72a2f5bd | 150 | net_drv_obj->req_ext_size, GFP_ATOMIC); |
02fafbc6 | 151 | if (!packet) { |
b220f5f9 | 152 | /* out of memory, silently drop packet */ |
eb335bc4 | 153 | netdev_err(net, "unable to allocate hv_netvsc_packet\n"); |
b220f5f9 SH |
154 | |
155 | dev_kfree_skb(skb); | |
156 | net->stats.tx_dropped++; | |
157 | return NETDEV_TX_OK; | |
fceaf24a HJ |
158 | } |
159 | ||
72a2f5bd | 160 | packet->extension = (void *)(unsigned long)packet + |
02fafbc6 | 161 | sizeof(struct hv_netvsc_packet) + |
6048718d | 162 | (num_pages * sizeof(struct hv_page_buffer)); |
fceaf24a | 163 | |
454f18a9 | 164 | /* Setup the rndis header */ |
72a2f5bd | 165 | packet->page_buf_cnt = num_pages; |
fceaf24a | 166 | |
454f18a9 BP |
167 | /* TODO: Flush all write buffers/ memory fence ??? */ |
168 | /* wmb(); */ | |
fceaf24a | 169 | |
454f18a9 | 170 | /* Initialize it from the skb */ |
72a2f5bd | 171 | packet->total_data_buflen = skb->len; |
fceaf24a | 172 | |
6048718d | 173 | /* Start filling in the page buffers starting after RNDIS buffer. */ |
ca623ad3 HZ |
174 | packet->page_buf[1].pfn = virt_to_phys(skb->data) >> PAGE_SHIFT; |
175 | packet->page_buf[1].offset | |
6048718d | 176 | = (unsigned long)skb->data & (PAGE_SIZE - 1); |
ca623ad3 | 177 | packet->page_buf[1].len = skb_headlen(skb); |
6048718d SH |
178 | |
179 | /* Additional fragments are after SKB data */ | |
180 | for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { | |
181 | skb_frag_t *f = &skb_shinfo(skb)->frags[i]; | |
182 | ||
ca623ad3 HZ |
183 | packet->page_buf[i+2].pfn = page_to_pfn(f->page); |
184 | packet->page_buf[i+2].offset = f->page_offset; | |
185 | packet->page_buf[i+2].len = f->size; | |
fceaf24a HJ |
186 | } |
187 | ||
454f18a9 | 188 | /* Set the completion routine */ |
72a2f5bd HZ |
189 | packet->completion.send.send_completion = netvsc_xmit_completion; |
190 | packet->completion.send.send_completion_ctx = packet; | |
191 | packet->completion.send.send_completion_tid = (unsigned long)skb; | |
fceaf24a | 192 | |
6bad88da | 193 | ret = net_drv_obj->send(net_device_ctx->device_ctx, |
02fafbc6 | 194 | packet); |
02fafbc6 | 195 | if (ret == 0) { |
b852fdce SH |
196 | net->stats.tx_bytes += skb->len; |
197 | net->stats.tx_packets++; | |
fceaf24a | 198 | |
581de3b0 TH |
199 | net_device_ctx->avail -= num_pages; |
200 | if (net_device_ctx->avail < PACKET_PAGES_LOWATER) | |
b220f5f9 SH |
201 | netif_stop_queue(net); |
202 | } else { | |
203 | /* we are shutting down or bus overloaded, just drop packet */ | |
b852fdce | 204 | net->stats.tx_dropped++; |
b220f5f9 | 205 | netvsc_xmit_completion(packet); |
fceaf24a HJ |
206 | } |
207 | ||
b220f5f9 | 208 | return NETDEV_TX_OK; |
fceaf24a HJ |
209 | } |
210 | ||
3e189519 | 211 | /* |
02fafbc6 GKH |
212 | * netvsc_linkstatus_callback - Link up/down notification |
213 | */ | |
214 | static void netvsc_linkstatus_callback(struct hv_device *device_obj, | |
215 | unsigned int status) | |
fceaf24a | 216 | { |
6bad88da | 217 | struct net_device *net = dev_get_drvdata(&device_obj->device); |
c996edcf | 218 | struct net_device_context *ndev_ctx; |
fceaf24a | 219 | |
02fafbc6 | 220 | if (!net) { |
eb335bc4 HJ |
221 | netdev_err(net, "got link status but net device " |
222 | "not initialized yet\n"); | |
fceaf24a HJ |
223 | return; |
224 | } | |
225 | ||
02fafbc6 | 226 | if (status == 1) { |
fceaf24a HJ |
227 | netif_carrier_on(net); |
228 | netif_wake_queue(net); | |
7c161d0b | 229 | netif_notify_peers(net); |
c996edcf HZ |
230 | ndev_ctx = netdev_priv(net); |
231 | schedule_work(&ndev_ctx->work); | |
02fafbc6 | 232 | } else { |
fceaf24a HJ |
233 | netif_carrier_off(net); |
234 | netif_stop_queue(net); | |
235 | } | |
fceaf24a HJ |
236 | } |
237 | ||
3e189519 HJ |
238 | /* |
239 | * netvsc_recv_callback - Callback when we receive a packet from the | |
240 | * "wire" on the specified device. | |
02fafbc6 GKH |
241 | */ |
242 | static int netvsc_recv_callback(struct hv_device *device_obj, | |
243 | struct hv_netvsc_packet *packet) | |
fceaf24a | 244 | { |
6bad88da | 245 | struct net_device *net = dev_get_drvdata(&device_obj->device); |
fceaf24a HJ |
246 | struct sk_buff *skb; |
247 | void *data; | |
02fafbc6 | 248 | int i; |
fceaf24a HJ |
249 | unsigned long flags; |
250 | ||
02fafbc6 | 251 | if (!net) { |
eb335bc4 HJ |
252 | netdev_err(net, "got receive callback but net device" |
253 | " not initialized yet\n"); | |
fceaf24a HJ |
254 | return 0; |
255 | } | |
256 | ||
9495c282 | 257 | /* Allocate a skb - TODO direct I/O to pages? */ |
72a2f5bd | 258 | skb = netdev_alloc_skb_ip_align(net, packet->total_data_buflen); |
9495c282 SH |
259 | if (unlikely(!skb)) { |
260 | ++net->stats.rx_dropped; | |
261 | return 0; | |
262 | } | |
fceaf24a | 263 | |
454f18a9 | 264 | /* for kmap_atomic */ |
fceaf24a HJ |
265 | local_irq_save(flags); |
266 | ||
02fafbc6 GKH |
267 | /* |
268 | * Copy to skb. This copy is needed here since the memory pointed by | |
269 | * hv_netvsc_packet cannot be deallocated | |
270 | */ | |
72a2f5bd | 271 | for (i = 0; i < packet->page_buf_cnt; i++) { |
ca623ad3 | 272 | data = kmap_atomic(pfn_to_page(packet->page_buf[i].pfn), |
02fafbc6 GKH |
273 | KM_IRQ1); |
274 | data = (void *)(unsigned long)data + | |
ca623ad3 | 275 | packet->page_buf[i].offset; |
02fafbc6 | 276 | |
ca623ad3 HZ |
277 | memcpy(skb_put(skb, packet->page_buf[i].len), data, |
278 | packet->page_buf[i].len); | |
02fafbc6 GKH |
279 | |
280 | kunmap_atomic((void *)((unsigned long)data - | |
ca623ad3 | 281 | packet->page_buf[i].offset), KM_IRQ1); |
fceaf24a HJ |
282 | } |
283 | ||
284 | local_irq_restore(flags); | |
285 | ||
286 | skb->protocol = eth_type_trans(skb, net); | |
fceaf24a HJ |
287 | skb->ip_summed = CHECKSUM_NONE; |
288 | ||
9495c282 SH |
289 | net->stats.rx_packets++; |
290 | net->stats.rx_bytes += skb->len; | |
291 | ||
02fafbc6 GKH |
292 | /* |
293 | * Pass the skb back up. Network stack will deallocate the skb when it | |
9495c282 SH |
294 | * is done. |
295 | * TODO - use NAPI? | |
02fafbc6 | 296 | */ |
9495c282 | 297 | netif_rx(skb); |
fceaf24a | 298 | |
fceaf24a HJ |
299 | return 0; |
300 | } | |
301 | ||
f82f4ad7 SH |
302 | static void netvsc_get_drvinfo(struct net_device *net, |
303 | struct ethtool_drvinfo *info) | |
304 | { | |
305 | strcpy(info->driver, "hv_netvsc"); | |
306 | strcpy(info->version, HV_DRV_VERSION); | |
307 | strcpy(info->fw_version, "N/A"); | |
308 | } | |
309 | ||
310 | static const struct ethtool_ops ethtool_ops = { | |
311 | .get_drvinfo = netvsc_get_drvinfo, | |
312 | .get_sg = ethtool_op_get_sg, | |
313 | .set_sg = ethtool_op_set_sg, | |
314 | .get_link = ethtool_op_get_link, | |
315 | }; | |
316 | ||
df2fff28 GKH |
317 | static const struct net_device_ops device_ops = { |
318 | .ndo_open = netvsc_open, | |
319 | .ndo_stop = netvsc_close, | |
320 | .ndo_start_xmit = netvsc_start_xmit, | |
df2fff28 | 321 | .ndo_set_multicast_list = netvsc_set_multicast_list, |
b681b588 HZ |
322 | .ndo_change_mtu = eth_change_mtu, |
323 | .ndo_validate_addr = eth_validate_addr, | |
324 | .ndo_set_mac_address = eth_mac_addr, | |
df2fff28 GKH |
325 | }; |
326 | ||
c996edcf HZ |
327 | /* |
328 | * Send GARP packet to network peers after migrations. | |
329 | * After Quick Migration, the network is not immediately operational in the | |
330 | * current context when receiving RNDIS_STATUS_MEDIA_CONNECT event. So, add | |
331 | * another netif_notify_peers() into a scheduled work, otherwise GARP packet | |
332 | * will not be sent after quick migration, and cause network disconnection. | |
333 | */ | |
334 | static void netvsc_send_garp(struct work_struct *w) | |
335 | { | |
336 | struct net_device_context *ndev_ctx; | |
337 | struct net_device *net; | |
338 | ||
339 | msleep(20); | |
340 | ndev_ctx = container_of(w, struct net_device_context, work); | |
341 | net = dev_get_drvdata(&ndev_ctx->device_ctx->device); | |
342 | netif_notify_peers(net); | |
343 | } | |
344 | ||
345 | ||
df2fff28 GKH |
346 | static int netvsc_probe(struct device *device) |
347 | { | |
150f9398 S |
348 | struct hv_driver *drv = |
349 | drv_to_hv_drv(device->driver); | |
d8de5dc6 | 350 | struct netvsc_driver *net_drv_obj = drv->priv; |
6bad88da | 351 | struct hv_device *device_obj = device_to_hv_device(device); |
df2fff28 GKH |
352 | struct net_device *net = NULL; |
353 | struct net_device_context *net_device_ctx; | |
354 | struct netvsc_device_info device_info; | |
355 | int ret; | |
356 | ||
ca623ad3 | 357 | if (!net_drv_obj->base.dev_add) |
df2fff28 GKH |
358 | return -1; |
359 | ||
546d9e10 | 360 | net = alloc_etherdev(sizeof(struct net_device_context)); |
df2fff28 GKH |
361 | if (!net) |
362 | return -1; | |
363 | ||
364 | /* Set initial state */ | |
365 | netif_carrier_off(net); | |
df2fff28 GKH |
366 | |
367 | net_device_ctx = netdev_priv(net); | |
6bad88da | 368 | net_device_ctx->device_ctx = device_obj; |
b220f5f9 | 369 | net_device_ctx->avail = ring_size; |
df2fff28 | 370 | dev_set_drvdata(device, net); |
c996edcf | 371 | INIT_WORK(&net_device_ctx->work, netvsc_send_garp); |
df2fff28 GKH |
372 | |
373 | /* Notify the netvsc driver of the new device */ | |
ca623ad3 | 374 | ret = net_drv_obj->base.dev_add(device_obj, &device_info); |
df2fff28 GKH |
375 | if (ret != 0) { |
376 | free_netdev(net); | |
377 | dev_set_drvdata(device, NULL); | |
378 | ||
eb335bc4 | 379 | netdev_err(net, "unable to add netvsc device (ret %d)\n", ret); |
df2fff28 GKH |
380 | return ret; |
381 | } | |
382 | ||
383 | /* | |
384 | * If carrier is still off ie we did not get a link status callback, | |
385 | * update it if necessary | |
386 | */ | |
387 | /* | |
388 | * FIXME: We should use a atomic or test/set instead to avoid getting | |
389 | * out of sync with the device's link status | |
390 | */ | |
391 | if (!netif_carrier_ok(net)) | |
72a2f5bd | 392 | if (!device_info.link_state) |
df2fff28 GKH |
393 | netif_carrier_on(net); |
394 | ||
72a2f5bd | 395 | memcpy(net->dev_addr, device_info.mac_adr, ETH_ALEN); |
df2fff28 GKH |
396 | |
397 | net->netdev_ops = &device_ops; | |
398 | ||
6048718d SH |
399 | /* TODO: Add GSO and Checksum offload */ |
400 | net->features = NETIF_F_SG; | |
401 | ||
f82f4ad7 | 402 | SET_ETHTOOL_OPS(net, ðtool_ops); |
df2fff28 GKH |
403 | SET_NETDEV_DEV(net, device); |
404 | ||
405 | ret = register_netdev(net); | |
406 | if (ret != 0) { | |
407 | /* Remove the device and release the resource */ | |
ca623ad3 | 408 | net_drv_obj->base.dev_rm(device_obj); |
df2fff28 GKH |
409 | free_netdev(net); |
410 | } | |
411 | ||
df2fff28 GKH |
412 | return ret; |
413 | } | |
414 | ||
415 | static int netvsc_remove(struct device *device) | |
416 | { | |
150f9398 S |
417 | struct hv_driver *drv = |
418 | drv_to_hv_drv(device->driver); | |
d8de5dc6 | 419 | struct netvsc_driver *net_drv_obj = drv->priv; |
6bad88da S |
420 | struct hv_device *device_obj = device_to_hv_device(device); |
421 | struct net_device *net = dev_get_drvdata(&device_obj->device); | |
df2fff28 GKH |
422 | int ret; |
423 | ||
df2fff28 | 424 | if (net == NULL) { |
eb335bc4 | 425 | dev_err(device, "No net device to remove\n"); |
df2fff28 GKH |
426 | return 0; |
427 | } | |
428 | ||
ca623ad3 | 429 | if (!net_drv_obj->base.dev_rm) |
df2fff28 | 430 | return -1; |
df2fff28 GKH |
431 | |
432 | /* Stop outbound asap */ | |
433 | netif_stop_queue(net); | |
434 | /* netif_carrier_off(net); */ | |
435 | ||
436 | unregister_netdev(net); | |
437 | ||
438 | /* | |
439 | * Call to the vsc driver to let it know that the device is being | |
440 | * removed | |
441 | */ | |
ca623ad3 | 442 | ret = net_drv_obj->base.dev_rm(device_obj); |
df2fff28 GKH |
443 | if (ret != 0) { |
444 | /* TODO: */ | |
eb335bc4 | 445 | netdev_err(net, "unable to remove vsc device (ret %d)\n", ret); |
df2fff28 GKH |
446 | } |
447 | ||
448 | free_netdev(net); | |
df2fff28 GKH |
449 | return ret; |
450 | } | |
451 | ||
fceaf24a HJ |
452 | static int netvsc_drv_exit_cb(struct device *dev, void *data) |
453 | { | |
454 | struct device **curr = (struct device **)data; | |
02fafbc6 | 455 | |
fceaf24a | 456 | *curr = dev; |
02fafbc6 GKH |
457 | /* stop iterating */ |
458 | return 1; | |
fceaf24a HJ |
459 | } |
460 | ||
bd1de709 | 461 | static void netvsc_drv_exit(void) |
fceaf24a | 462 | { |
d8de5dc6 S |
463 | struct netvsc_driver *netvsc_drv_obj = &g_netvsc_drv; |
464 | struct hv_driver *drv = &g_netvsc_drv.base; | |
02fafbc6 | 465 | struct device *current_dev; |
2295ba2e | 466 | int ret; |
fceaf24a | 467 | |
02fafbc6 | 468 | while (1) { |
fceaf24a HJ |
469 | current_dev = NULL; |
470 | ||
454f18a9 | 471 | /* Get the device */ |
150f9398 | 472 | ret = driver_for_each_device(&drv->driver, NULL, |
02fafbc6 | 473 | ¤t_dev, netvsc_drv_exit_cb); |
2295ba2e | 474 | |
fceaf24a HJ |
475 | if (current_dev == NULL) |
476 | break; | |
477 | ||
454f18a9 | 478 | /* Initiate removal from the top-down */ |
eb335bc4 HJ |
479 | dev_err(current_dev, "unregistering device (%s)...\n", |
480 | dev_name(current_dev)); | |
fceaf24a HJ |
481 | |
482 | device_unregister(current_dev); | |
483 | } | |
484 | ||
ca623ad3 HZ |
485 | if (netvsc_drv_obj->base.cleanup) |
486 | netvsc_drv_obj->base.cleanup(&netvsc_drv_obj->base); | |
fceaf24a | 487 | |
150f9398 | 488 | vmbus_child_driver_unregister(&drv->driver); |
fceaf24a | 489 | |
fceaf24a HJ |
490 | return; |
491 | } | |
492 | ||
21707bed | 493 | static int netvsc_drv_init(int (*drv_init)(struct hv_driver *drv)) |
df2fff28 | 494 | { |
d8de5dc6 S |
495 | struct netvsc_driver *net_drv_obj = &g_netvsc_drv; |
496 | struct hv_driver *drv = &g_netvsc_drv.base; | |
df2fff28 GKH |
497 | int ret; |
498 | ||
72a2f5bd HZ |
499 | net_drv_obj->ring_buf_size = ring_size * PAGE_SIZE; |
500 | net_drv_obj->recv_cb = netvsc_recv_callback; | |
501 | net_drv_obj->link_status_change = netvsc_linkstatus_callback; | |
150f9398 | 502 | drv->priv = net_drv_obj; |
df2fff28 GKH |
503 | |
504 | /* Callback to client driver to complete the initialization */ | |
72a2f5bd | 505 | drv_init(&net_drv_obj->base); |
df2fff28 | 506 | |
150f9398 | 507 | drv->driver.name = net_drv_obj->base.name; |
df2fff28 | 508 | |
150f9398 S |
509 | drv->driver.probe = netvsc_probe; |
510 | drv->driver.remove = netvsc_remove; | |
df2fff28 GKH |
511 | |
512 | /* The driver belongs to vmbus */ | |
150f9398 | 513 | ret = vmbus_child_driver_register(&drv->driver); |
df2fff28 | 514 | |
df2fff28 GKH |
515 | return ret; |
516 | } | |
517 | ||
06e719d8 S |
518 | static const struct dmi_system_id __initconst |
519 | hv_netvsc_dmi_table[] __maybe_unused = { | |
520 | { | |
521 | .ident = "Hyper-V", | |
522 | .matches = { | |
523 | DMI_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"), | |
524 | DMI_MATCH(DMI_PRODUCT_NAME, "Virtual Machine"), | |
525 | DMI_MATCH(DMI_BOARD_NAME, "Virtual Machine"), | |
526 | }, | |
527 | }, | |
528 | { }, | |
529 | }; | |
530 | MODULE_DEVICE_TABLE(dmi, hv_netvsc_dmi_table); | |
531 | ||
fceaf24a HJ |
532 | static int __init netvsc_init(void) |
533 | { | |
eb335bc4 | 534 | pr_info("initializing...."); |
fceaf24a | 535 | |
06e719d8 S |
536 | if (!dmi_check_system(hv_netvsc_dmi_table)) |
537 | return -ENODEV; | |
538 | ||
5a71ae30 | 539 | return netvsc_drv_init(netvsc_initialize); |
fceaf24a HJ |
540 | } |
541 | ||
542 | static void __exit netvsc_exit(void) | |
543 | { | |
fceaf24a | 544 | netvsc_drv_exit(); |
fceaf24a HJ |
545 | } |
546 | ||
06e719d8 S |
547 | static const struct pci_device_id __initconst |
548 | hv_netvsc_pci_table[] __maybe_unused = { | |
549 | { PCI_DEVICE(0x1414, 0x5353) }, /* VGA compatible controller */ | |
550 | { 0 } | |
551 | }; | |
552 | MODULE_DEVICE_TABLE(pci, hv_netvsc_pci_table); | |
553 | ||
26c14cc1 HJ |
554 | MODULE_LICENSE("GPL"); |
555 | MODULE_VERSION(HV_DRV_VERSION); | |
7880fc54 | 556 | MODULE_DESCRIPTION("Microsoft Hyper-V network driver"); |
fceaf24a HJ |
557 | |
558 | module_init(netvsc_init); | |
559 | module_exit(netvsc_exit); |