Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 1 | /* |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 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: |
Haiyang Zhang | d0e94d1 | 2009-11-23 17:00:22 +0000 | [diff] [blame] | 18 | * Haiyang Zhang <haiyangz@microsoft.com> |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 19 | * Hank Janssen <hjanssen@microsoft.com> |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 20 | */ |
Hank Janssen | eb335bc | 2011-03-29 13:58:48 -0700 | [diff] [blame] | 21 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| 22 | |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 23 | #include <linux/init.h> |
| 24 | #include <linux/module.h> |
| 25 | #include <linux/highmem.h> |
| 26 | #include <linux/device.h> |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 27 | #include <linux/io.h> |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 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> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 34 | #include <linux/slab.h> |
K. Y. Srinivasan | 06e719d | 2010-05-07 17:52:17 -0600 | [diff] [blame] | 35 | #include <linux/dmi.h> |
| 36 | #include <linux/pci.h> |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 37 | #include <net/arp.h> |
| 38 | #include <net/route.h> |
| 39 | #include <net/sock.h> |
| 40 | #include <net/pkt_sched.h> |
K. Y. Srinivasan | 3f335ea | 2011-05-12 19:34:15 -0700 | [diff] [blame^] | 41 | |
| 42 | #include "hyperv.h" |
K. Y. Srinivasan | e3fe0bb | 2011-02-11 10:00:12 -0800 | [diff] [blame] | 43 | #include "hv_api.h" |
Greg Kroah-Hartman | 645954c | 2009-08-28 16:22:59 -0700 | [diff] [blame] | 44 | #include "logging.h" |
Greg Kroah-Hartman | 2d82f6c | 2010-05-05 22:52:28 -0700 | [diff] [blame] | 45 | #include "version_info.h" |
Greg Kroah-Hartman | 870cde8 | 2009-08-19 16:21:28 -0700 | [diff] [blame] | 46 | #include "vmbus.h" |
Greg Kroah-Hartman | a82c7a2 | 2010-05-05 22:39:15 -0700 | [diff] [blame] | 47 | #include "netvsc_api.h" |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 48 | |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 49 | struct net_device_context { |
Greg Kroah-Hartman | 02fafbc | 2009-08-31 21:09:45 -0700 | [diff] [blame] | 50 | /* point back to our device context */ |
K. Y. Srinivasan | 6bad88da | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 51 | struct hv_device *device_ctx; |
Stephen Hemminger | b220f5f | 2010-05-04 09:58:56 -0700 | [diff] [blame] | 52 | unsigned long avail; |
Haiyang Zhang | c996edc | 2011-04-06 15:18:00 -0700 | [diff] [blame] | 53 | struct work_struct work; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 54 | }; |
| 55 | |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 56 | |
Stephen Hemminger | b220f5f | 2010-05-04 09:58:56 -0700 | [diff] [blame] | 57 | #define PACKET_PAGES_LOWATER 8 |
| 58 | /* Need this many pages to handle worst case fragmented packet */ |
| 59 | #define PACKET_PAGES_HIWATER (MAX_SKB_FRAGS + 2) |
| 60 | |
Hank Janssen | 99c8da0 | 2010-10-12 10:45:23 -0700 | [diff] [blame] | 61 | static int ring_size = 128; |
Stephen Hemminger | 450d7a4 | 2010-05-04 09:58:53 -0700 | [diff] [blame] | 62 | module_param(ring_size, int, S_IRUGO); |
| 63 | MODULE_PARM_DESC(ring_size, "Ring buffer size (# of pages)"); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 64 | |
Brandon Philips | 0ff36f69 | 2010-11-15 11:55:33 -0800 | [diff] [blame] | 65 | /* no-op so the netdev core doesn't return -EINVAL when modifying the the |
| 66 | * multicast address list in SIOCADDMULTI. hv is setup to get all multicast |
| 67 | * when it calls RndisFilterOnOpen() */ |
Greg Kroah-Hartman | 4e9bfef | 2009-07-15 12:45:20 -0700 | [diff] [blame] | 68 | static void netvsc_set_multicast_list(struct net_device *net) |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 69 | { |
| 70 | } |
| 71 | |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 72 | static int netvsc_open(struct net_device *net) |
| 73 | { |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 74 | struct net_device_context *net_device_ctx = netdev_priv(net); |
K. Y. Srinivasan | 6bad88da | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 75 | struct hv_device *device_obj = net_device_ctx->device_ctx; |
Greg Kroah-Hartman | 02fafbc | 2009-08-31 21:09:45 -0700 | [diff] [blame] | 76 | int ret = 0; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 77 | |
Greg Kroah-Hartman | 02fafbc | 2009-08-31 21:09:45 -0700 | [diff] [blame] | 78 | if (netif_carrier_ok(net)) { |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 79 | /* Open up the device */ |
Haiyang Zhang | 9c26aa0 | 2010-12-10 12:03:57 -0800 | [diff] [blame] | 80 | ret = rndis_filter_open(device_obj); |
Greg Kroah-Hartman | 02fafbc | 2009-08-31 21:09:45 -0700 | [diff] [blame] | 81 | if (ret != 0) { |
Hank Janssen | eb335bc | 2011-03-29 13:58:48 -0700 | [diff] [blame] | 82 | netdev_err(net, "unable to open device (ret %d).\n", |
| 83 | ret); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 84 | return ret; |
| 85 | } |
| 86 | |
| 87 | netif_start_queue(net); |
Greg Kroah-Hartman | 02fafbc | 2009-08-31 21:09:45 -0700 | [diff] [blame] | 88 | } else { |
Hank Janssen | eb335bc | 2011-03-29 13:58:48 -0700 | [diff] [blame] | 89 | netdev_err(net, "unable to open device...link is down.\n"); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 90 | } |
| 91 | |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 92 | return ret; |
| 93 | } |
| 94 | |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 95 | static int netvsc_close(struct net_device *net) |
| 96 | { |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 97 | struct net_device_context *net_device_ctx = netdev_priv(net); |
K. Y. Srinivasan | 6bad88da | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 98 | struct hv_device *device_obj = net_device_ctx->device_ctx; |
Greg Kroah-Hartman | 02fafbc | 2009-08-31 21:09:45 -0700 | [diff] [blame] | 99 | int ret; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 100 | |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 101 | netif_stop_queue(net); |
| 102 | |
Haiyang Zhang | 9c26aa0 | 2010-12-10 12:03:57 -0800 | [diff] [blame] | 103 | ret = rndis_filter_close(device_obj); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 104 | if (ret != 0) |
Hank Janssen | eb335bc | 2011-03-29 13:58:48 -0700 | [diff] [blame] | 105 | netdev_err(net, "unable to close device (ret %d).\n", ret); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 106 | |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 107 | return ret; |
| 108 | } |
| 109 | |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 110 | static void netvsc_xmit_completion(void *context) |
| 111 | { |
Nicolas Palix | 4193d4f | 2009-07-29 14:10:10 +0200 | [diff] [blame] | 112 | struct hv_netvsc_packet *packet = (struct hv_netvsc_packet *)context; |
Greg Kroah-Hartman | 02fafbc | 2009-08-31 21:09:45 -0700 | [diff] [blame] | 113 | struct sk_buff *skb = (struct sk_buff *) |
Haiyang Zhang | 72a2f5b | 2010-12-10 12:03:58 -0800 | [diff] [blame] | 114 | (unsigned long)packet->completion.send.send_completion_tid; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 115 | |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 116 | kfree(packet); |
| 117 | |
Greg Kroah-Hartman | 02fafbc | 2009-08-31 21:09:45 -0700 | [diff] [blame] | 118 | if (skb) { |
Stephen Hemminger | 7880fc5 | 2010-05-04 09:58:52 -0700 | [diff] [blame] | 119 | struct net_device *net = skb->dev; |
Stephen Hemminger | b220f5f | 2010-05-04 09:58:56 -0700 | [diff] [blame] | 120 | struct net_device_context *net_device_ctx = netdev_priv(net); |
| 121 | unsigned int num_pages = skb_shinfo(skb)->nr_frags + 2; |
| 122 | |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 123 | dev_kfree_skb_any(skb); |
| 124 | |
Timo von Holtz | 581de3b | 2011-02-08 15:55:49 +0100 | [diff] [blame] | 125 | net_device_ctx->avail += num_pages; |
| 126 | if (net_device_ctx->avail >= PACKET_PAGES_HIWATER) |
Stephen Hemminger | b220f5f | 2010-05-04 09:58:56 -0700 | [diff] [blame] | 127 | netif_wake_queue(net); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 128 | } |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 129 | } |
| 130 | |
Greg Kroah-Hartman | 02fafbc | 2009-08-31 21:09:45 -0700 | [diff] [blame] | 131 | static int netvsc_start_xmit(struct sk_buff *skb, struct net_device *net) |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 132 | { |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 133 | struct net_device_context *net_device_ctx = netdev_priv(net); |
K. Y. Srinivasan | 779b4d1 | 2011-04-26 09:20:22 -0700 | [diff] [blame] | 134 | struct netvsc_driver *net_drv_obj = |
| 135 | drv_to_netvscdrv(net_device_ctx->device_ctx->device.driver); |
Nicolas Palix | 4193d4f | 2009-07-29 14:10:10 +0200 | [diff] [blame] | 136 | struct hv_netvsc_packet *packet; |
Greg Kroah-Hartman | 02fafbc | 2009-08-31 21:09:45 -0700 | [diff] [blame] | 137 | int ret; |
Stephen Hemminger | 6048718 | 2010-05-04 09:58:55 -0700 | [diff] [blame] | 138 | unsigned int i, num_pages; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 139 | |
Stephen Hemminger | 6048718 | 2010-05-04 09:58:55 -0700 | [diff] [blame] | 140 | /* Add 1 for skb->data and additional one for RNDIS */ |
| 141 | num_pages = skb_shinfo(skb)->nr_frags + 1 + 1; |
Stephen Hemminger | b220f5f | 2010-05-04 09:58:56 -0700 | [diff] [blame] | 142 | if (num_pages > net_device_ctx->avail) |
| 143 | return NETDEV_TX_BUSY; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 144 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 145 | /* Allocate a netvsc packet based on # of frags. */ |
Greg Kroah-Hartman | 02fafbc | 2009-08-31 21:09:45 -0700 | [diff] [blame] | 146 | packet = kzalloc(sizeof(struct hv_netvsc_packet) + |
Stephen Hemminger | 6048718 | 2010-05-04 09:58:55 -0700 | [diff] [blame] | 147 | (num_pages * sizeof(struct hv_page_buffer)) + |
Haiyang Zhang | 72a2f5b | 2010-12-10 12:03:58 -0800 | [diff] [blame] | 148 | net_drv_obj->req_ext_size, GFP_ATOMIC); |
Greg Kroah-Hartman | 02fafbc | 2009-08-31 21:09:45 -0700 | [diff] [blame] | 149 | if (!packet) { |
Stephen Hemminger | b220f5f | 2010-05-04 09:58:56 -0700 | [diff] [blame] | 150 | /* out of memory, silently drop packet */ |
Hank Janssen | eb335bc | 2011-03-29 13:58:48 -0700 | [diff] [blame] | 151 | netdev_err(net, "unable to allocate hv_netvsc_packet\n"); |
Stephen Hemminger | b220f5f | 2010-05-04 09:58:56 -0700 | [diff] [blame] | 152 | |
| 153 | dev_kfree_skb(skb); |
| 154 | net->stats.tx_dropped++; |
| 155 | return NETDEV_TX_OK; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 156 | } |
| 157 | |
Haiyang Zhang | 72a2f5b | 2010-12-10 12:03:58 -0800 | [diff] [blame] | 158 | packet->extension = (void *)(unsigned long)packet + |
Greg Kroah-Hartman | 02fafbc | 2009-08-31 21:09:45 -0700 | [diff] [blame] | 159 | sizeof(struct hv_netvsc_packet) + |
Stephen Hemminger | 6048718 | 2010-05-04 09:58:55 -0700 | [diff] [blame] | 160 | (num_pages * sizeof(struct hv_page_buffer)); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 161 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 162 | /* Setup the rndis header */ |
Haiyang Zhang | 72a2f5b | 2010-12-10 12:03:58 -0800 | [diff] [blame] | 163 | packet->page_buf_cnt = num_pages; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 164 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 165 | /* TODO: Flush all write buffers/ memory fence ??? */ |
| 166 | /* wmb(); */ |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 167 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 168 | /* Initialize it from the skb */ |
Haiyang Zhang | 72a2f5b | 2010-12-10 12:03:58 -0800 | [diff] [blame] | 169 | packet->total_data_buflen = skb->len; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 170 | |
Stephen Hemminger | 6048718 | 2010-05-04 09:58:55 -0700 | [diff] [blame] | 171 | /* Start filling in the page buffers starting after RNDIS buffer. */ |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 172 | packet->page_buf[1].pfn = virt_to_phys(skb->data) >> PAGE_SHIFT; |
| 173 | packet->page_buf[1].offset |
Stephen Hemminger | 6048718 | 2010-05-04 09:58:55 -0700 | [diff] [blame] | 174 | = (unsigned long)skb->data & (PAGE_SIZE - 1); |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 175 | packet->page_buf[1].len = skb_headlen(skb); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 176 | |
Stephen Hemminger | 6048718 | 2010-05-04 09:58:55 -0700 | [diff] [blame] | 177 | /* Additional fragments are after SKB data */ |
| 178 | for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { |
| 179 | skb_frag_t *f = &skb_shinfo(skb)->frags[i]; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 180 | |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 181 | packet->page_buf[i+2].pfn = page_to_pfn(f->page); |
| 182 | packet->page_buf[i+2].offset = f->page_offset; |
| 183 | packet->page_buf[i+2].len = f->size; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 184 | } |
| 185 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 186 | /* Set the completion routine */ |
Haiyang Zhang | 72a2f5b | 2010-12-10 12:03:58 -0800 | [diff] [blame] | 187 | packet->completion.send.send_completion = netvsc_xmit_completion; |
| 188 | packet->completion.send.send_completion_ctx = packet; |
| 189 | packet->completion.send.send_completion_tid = (unsigned long)skb; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 190 | |
K. Y. Srinivasan | 6bad88da | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 191 | ret = net_drv_obj->send(net_device_ctx->device_ctx, |
Greg Kroah-Hartman | 02fafbc | 2009-08-31 21:09:45 -0700 | [diff] [blame] | 192 | packet); |
Greg Kroah-Hartman | 02fafbc | 2009-08-31 21:09:45 -0700 | [diff] [blame] | 193 | if (ret == 0) { |
Stephen Hemminger | b852fdc | 2010-03-09 17:42:33 -0800 | [diff] [blame] | 194 | net->stats.tx_bytes += skb->len; |
| 195 | net->stats.tx_packets++; |
Stephen Hemminger | b220f5f | 2010-05-04 09:58:56 -0700 | [diff] [blame] | 196 | |
Timo von Holtz | 581de3b | 2011-02-08 15:55:49 +0100 | [diff] [blame] | 197 | net_device_ctx->avail -= num_pages; |
| 198 | if (net_device_ctx->avail < PACKET_PAGES_LOWATER) |
Stephen Hemminger | b220f5f | 2010-05-04 09:58:56 -0700 | [diff] [blame] | 199 | netif_stop_queue(net); |
Greg Kroah-Hartman | 02fafbc | 2009-08-31 21:09:45 -0700 | [diff] [blame] | 200 | } else { |
Stephen Hemminger | b220f5f | 2010-05-04 09:58:56 -0700 | [diff] [blame] | 201 | /* we are shutting down or bus overloaded, just drop packet */ |
Stephen Hemminger | b852fdc | 2010-03-09 17:42:33 -0800 | [diff] [blame] | 202 | net->stats.tx_dropped++; |
Stephen Hemminger | b220f5f | 2010-05-04 09:58:56 -0700 | [diff] [blame] | 203 | netvsc_xmit_completion(packet); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 204 | } |
| 205 | |
Stephen Hemminger | b220f5f | 2010-05-04 09:58:56 -0700 | [diff] [blame] | 206 | return NETDEV_TX_OK; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 207 | } |
| 208 | |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 209 | /* |
Greg Kroah-Hartman | 02fafbc | 2009-08-31 21:09:45 -0700 | [diff] [blame] | 210 | * netvsc_linkstatus_callback - Link up/down notification |
| 211 | */ |
| 212 | static void netvsc_linkstatus_callback(struct hv_device *device_obj, |
| 213 | unsigned int status) |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 214 | { |
K. Y. Srinivasan | 6bad88da | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 215 | struct net_device *net = dev_get_drvdata(&device_obj->device); |
Haiyang Zhang | c996edc | 2011-04-06 15:18:00 -0700 | [diff] [blame] | 216 | struct net_device_context *ndev_ctx; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 217 | |
Greg Kroah-Hartman | 02fafbc | 2009-08-31 21:09:45 -0700 | [diff] [blame] | 218 | if (!net) { |
Hank Janssen | eb335bc | 2011-03-29 13:58:48 -0700 | [diff] [blame] | 219 | netdev_err(net, "got link status but net device " |
| 220 | "not initialized yet\n"); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 221 | return; |
| 222 | } |
| 223 | |
Greg Kroah-Hartman | 02fafbc | 2009-08-31 21:09:45 -0700 | [diff] [blame] | 224 | if (status == 1) { |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 225 | netif_carrier_on(net); |
| 226 | netif_wake_queue(net); |
Haiyang Zhang | 7c161d0 | 2011-02-02 13:42:58 -0800 | [diff] [blame] | 227 | netif_notify_peers(net); |
Haiyang Zhang | c996edc | 2011-04-06 15:18:00 -0700 | [diff] [blame] | 228 | ndev_ctx = netdev_priv(net); |
| 229 | schedule_work(&ndev_ctx->work); |
Greg Kroah-Hartman | 02fafbc | 2009-08-31 21:09:45 -0700 | [diff] [blame] | 230 | } else { |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 231 | netif_carrier_off(net); |
| 232 | netif_stop_queue(net); |
| 233 | } |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 234 | } |
| 235 | |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 236 | /* |
| 237 | * netvsc_recv_callback - Callback when we receive a packet from the |
| 238 | * "wire" on the specified device. |
Greg Kroah-Hartman | 02fafbc | 2009-08-31 21:09:45 -0700 | [diff] [blame] | 239 | */ |
| 240 | static int netvsc_recv_callback(struct hv_device *device_obj, |
| 241 | struct hv_netvsc_packet *packet) |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 242 | { |
K. Y. Srinivasan | 6bad88da | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 243 | struct net_device *net = dev_get_drvdata(&device_obj->device); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 244 | struct sk_buff *skb; |
| 245 | void *data; |
Greg Kroah-Hartman | 02fafbc | 2009-08-31 21:09:45 -0700 | [diff] [blame] | 246 | int i; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 247 | unsigned long flags; |
| 248 | |
Greg Kroah-Hartman | 02fafbc | 2009-08-31 21:09:45 -0700 | [diff] [blame] | 249 | if (!net) { |
Hank Janssen | eb335bc | 2011-03-29 13:58:48 -0700 | [diff] [blame] | 250 | netdev_err(net, "got receive callback but net device" |
| 251 | " not initialized yet\n"); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 252 | return 0; |
| 253 | } |
| 254 | |
Stephen Hemminger | 9495c28 | 2010-03-09 17:42:17 -0800 | [diff] [blame] | 255 | /* Allocate a skb - TODO direct I/O to pages? */ |
Haiyang Zhang | 72a2f5b | 2010-12-10 12:03:58 -0800 | [diff] [blame] | 256 | skb = netdev_alloc_skb_ip_align(net, packet->total_data_buflen); |
Stephen Hemminger | 9495c28 | 2010-03-09 17:42:17 -0800 | [diff] [blame] | 257 | if (unlikely(!skb)) { |
| 258 | ++net->stats.rx_dropped; |
| 259 | return 0; |
| 260 | } |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 261 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 262 | /* for kmap_atomic */ |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 263 | local_irq_save(flags); |
| 264 | |
Greg Kroah-Hartman | 02fafbc | 2009-08-31 21:09:45 -0700 | [diff] [blame] | 265 | /* |
| 266 | * Copy to skb. This copy is needed here since the memory pointed by |
| 267 | * hv_netvsc_packet cannot be deallocated |
| 268 | */ |
Haiyang Zhang | 72a2f5b | 2010-12-10 12:03:58 -0800 | [diff] [blame] | 269 | for (i = 0; i < packet->page_buf_cnt; i++) { |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 270 | data = kmap_atomic(pfn_to_page(packet->page_buf[i].pfn), |
Greg Kroah-Hartman | 02fafbc | 2009-08-31 21:09:45 -0700 | [diff] [blame] | 271 | KM_IRQ1); |
| 272 | data = (void *)(unsigned long)data + |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 273 | packet->page_buf[i].offset; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 274 | |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 275 | memcpy(skb_put(skb, packet->page_buf[i].len), data, |
| 276 | packet->page_buf[i].len); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 277 | |
Greg Kroah-Hartman | 02fafbc | 2009-08-31 21:09:45 -0700 | [diff] [blame] | 278 | kunmap_atomic((void *)((unsigned long)data - |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 279 | packet->page_buf[i].offset), KM_IRQ1); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 280 | } |
| 281 | |
| 282 | local_irq_restore(flags); |
| 283 | |
| 284 | skb->protocol = eth_type_trans(skb, net); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 285 | skb->ip_summed = CHECKSUM_NONE; |
| 286 | |
Stephen Hemminger | 9495c28 | 2010-03-09 17:42:17 -0800 | [diff] [blame] | 287 | net->stats.rx_packets++; |
| 288 | net->stats.rx_bytes += skb->len; |
| 289 | |
Greg Kroah-Hartman | 02fafbc | 2009-08-31 21:09:45 -0700 | [diff] [blame] | 290 | /* |
| 291 | * Pass the skb back up. Network stack will deallocate the skb when it |
Stephen Hemminger | 9495c28 | 2010-03-09 17:42:17 -0800 | [diff] [blame] | 292 | * is done. |
| 293 | * TODO - use NAPI? |
Greg Kroah-Hartman | 02fafbc | 2009-08-31 21:09:45 -0700 | [diff] [blame] | 294 | */ |
Stephen Hemminger | 9495c28 | 2010-03-09 17:42:17 -0800 | [diff] [blame] | 295 | netif_rx(skb); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 296 | |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 297 | return 0; |
| 298 | } |
| 299 | |
Stephen Hemminger | f82f4ad | 2010-05-04 09:58:57 -0700 | [diff] [blame] | 300 | static void netvsc_get_drvinfo(struct net_device *net, |
| 301 | struct ethtool_drvinfo *info) |
| 302 | { |
| 303 | strcpy(info->driver, "hv_netvsc"); |
| 304 | strcpy(info->version, HV_DRV_VERSION); |
| 305 | strcpy(info->fw_version, "N/A"); |
| 306 | } |
| 307 | |
| 308 | static const struct ethtool_ops ethtool_ops = { |
| 309 | .get_drvinfo = netvsc_get_drvinfo, |
Stephen Hemminger | f82f4ad | 2010-05-04 09:58:57 -0700 | [diff] [blame] | 310 | .get_link = ethtool_op_get_link, |
| 311 | }; |
| 312 | |
Greg Kroah-Hartman | df2fff2 | 2009-08-31 21:11:12 -0700 | [diff] [blame] | 313 | static const struct net_device_ops device_ops = { |
| 314 | .ndo_open = netvsc_open, |
| 315 | .ndo_stop = netvsc_close, |
| 316 | .ndo_start_xmit = netvsc_start_xmit, |
Greg Kroah-Hartman | df2fff2 | 2009-08-31 21:11:12 -0700 | [diff] [blame] | 317 | .ndo_set_multicast_list = netvsc_set_multicast_list, |
Haiyang Zhang | b681b58 | 2010-08-03 19:15:31 +0000 | [diff] [blame] | 318 | .ndo_change_mtu = eth_change_mtu, |
| 319 | .ndo_validate_addr = eth_validate_addr, |
| 320 | .ndo_set_mac_address = eth_mac_addr, |
Greg Kroah-Hartman | df2fff2 | 2009-08-31 21:11:12 -0700 | [diff] [blame] | 321 | }; |
| 322 | |
Haiyang Zhang | c996edc | 2011-04-06 15:18:00 -0700 | [diff] [blame] | 323 | /* |
| 324 | * Send GARP packet to network peers after migrations. |
| 325 | * After Quick Migration, the network is not immediately operational in the |
| 326 | * current context when receiving RNDIS_STATUS_MEDIA_CONNECT event. So, add |
| 327 | * another netif_notify_peers() into a scheduled work, otherwise GARP packet |
| 328 | * will not be sent after quick migration, and cause network disconnection. |
| 329 | */ |
| 330 | static void netvsc_send_garp(struct work_struct *w) |
| 331 | { |
| 332 | struct net_device_context *ndev_ctx; |
| 333 | struct net_device *net; |
| 334 | |
| 335 | msleep(20); |
| 336 | ndev_ctx = container_of(w, struct net_device_context, work); |
| 337 | net = dev_get_drvdata(&ndev_ctx->device_ctx->device); |
| 338 | netif_notify_peers(net); |
| 339 | } |
| 340 | |
| 341 | |
K. Y. Srinivasan | 9efd21e | 2011-04-29 13:45:10 -0700 | [diff] [blame] | 342 | static int netvsc_probe(struct hv_device *dev) |
Greg Kroah-Hartman | df2fff2 | 2009-08-31 21:11:12 -0700 | [diff] [blame] | 343 | { |
Greg Kroah-Hartman | df2fff2 | 2009-08-31 21:11:12 -0700 | [diff] [blame] | 344 | struct net_device *net = NULL; |
| 345 | struct net_device_context *net_device_ctx; |
| 346 | struct netvsc_device_info device_info; |
| 347 | int ret; |
| 348 | |
Stephen Hemminger | 546d9e1 | 2010-03-11 09:11:37 -0800 | [diff] [blame] | 349 | net = alloc_etherdev(sizeof(struct net_device_context)); |
Greg Kroah-Hartman | df2fff2 | 2009-08-31 21:11:12 -0700 | [diff] [blame] | 350 | if (!net) |
| 351 | return -1; |
| 352 | |
| 353 | /* Set initial state */ |
| 354 | netif_carrier_off(net); |
Greg Kroah-Hartman | df2fff2 | 2009-08-31 21:11:12 -0700 | [diff] [blame] | 355 | |
| 356 | net_device_ctx = netdev_priv(net); |
K. Y. Srinivasan | 9efd21e | 2011-04-29 13:45:10 -0700 | [diff] [blame] | 357 | net_device_ctx->device_ctx = dev; |
Stephen Hemminger | b220f5f | 2010-05-04 09:58:56 -0700 | [diff] [blame] | 358 | net_device_ctx->avail = ring_size; |
K. Y. Srinivasan | 9efd21e | 2011-04-29 13:45:10 -0700 | [diff] [blame] | 359 | dev_set_drvdata(&dev->device, net); |
Haiyang Zhang | c996edc | 2011-04-06 15:18:00 -0700 | [diff] [blame] | 360 | INIT_WORK(&net_device_ctx->work, netvsc_send_garp); |
Greg Kroah-Hartman | df2fff2 | 2009-08-31 21:11:12 -0700 | [diff] [blame] | 361 | |
| 362 | /* Notify the netvsc driver of the new device */ |
K. Y. Srinivasan | bc2d597 | 2011-05-10 07:54:59 -0700 | [diff] [blame] | 363 | ret = rndis_filte_device_add(dev, &device_info); |
Greg Kroah-Hartman | df2fff2 | 2009-08-31 21:11:12 -0700 | [diff] [blame] | 364 | if (ret != 0) { |
| 365 | free_netdev(net); |
K. Y. Srinivasan | 9efd21e | 2011-04-29 13:45:10 -0700 | [diff] [blame] | 366 | dev_set_drvdata(&dev->device, NULL); |
Greg Kroah-Hartman | df2fff2 | 2009-08-31 21:11:12 -0700 | [diff] [blame] | 367 | |
Hank Janssen | eb335bc | 2011-03-29 13:58:48 -0700 | [diff] [blame] | 368 | netdev_err(net, "unable to add netvsc device (ret %d)\n", ret); |
Greg Kroah-Hartman | df2fff2 | 2009-08-31 21:11:12 -0700 | [diff] [blame] | 369 | return ret; |
| 370 | } |
| 371 | |
| 372 | /* |
| 373 | * If carrier is still off ie we did not get a link status callback, |
| 374 | * update it if necessary |
| 375 | */ |
| 376 | /* |
| 377 | * FIXME: We should use a atomic or test/set instead to avoid getting |
| 378 | * out of sync with the device's link status |
| 379 | */ |
| 380 | if (!netif_carrier_ok(net)) |
Haiyang Zhang | 72a2f5b | 2010-12-10 12:03:58 -0800 | [diff] [blame] | 381 | if (!device_info.link_state) |
Greg Kroah-Hartman | df2fff2 | 2009-08-31 21:11:12 -0700 | [diff] [blame] | 382 | netif_carrier_on(net); |
| 383 | |
Haiyang Zhang | 72a2f5b | 2010-12-10 12:03:58 -0800 | [diff] [blame] | 384 | memcpy(net->dev_addr, device_info.mac_adr, ETH_ALEN); |
Greg Kroah-Hartman | df2fff2 | 2009-08-31 21:11:12 -0700 | [diff] [blame] | 385 | |
| 386 | net->netdev_ops = &device_ops; |
| 387 | |
Stephen Hemminger | 6048718 | 2010-05-04 09:58:55 -0700 | [diff] [blame] | 388 | /* TODO: Add GSO and Checksum offload */ |
Michał Mirosław | 877a344 | 2011-04-19 12:43:20 +0200 | [diff] [blame] | 389 | net->hw_features = NETIF_F_SG; |
Stephen Hemminger | 6048718 | 2010-05-04 09:58:55 -0700 | [diff] [blame] | 390 | net->features = NETIF_F_SG; |
| 391 | |
Stephen Hemminger | f82f4ad | 2010-05-04 09:58:57 -0700 | [diff] [blame] | 392 | SET_ETHTOOL_OPS(net, ðtool_ops); |
K. Y. Srinivasan | 9efd21e | 2011-04-29 13:45:10 -0700 | [diff] [blame] | 393 | SET_NETDEV_DEV(net, &dev->device); |
Greg Kroah-Hartman | df2fff2 | 2009-08-31 21:11:12 -0700 | [diff] [blame] | 394 | |
| 395 | ret = register_netdev(net); |
| 396 | if (ret != 0) { |
| 397 | /* Remove the device and release the resource */ |
K. Y. Srinivasan | 58de3fc | 2011-05-10 07:55:01 -0700 | [diff] [blame] | 398 | rndis_filter_device_remove(dev); |
Greg Kroah-Hartman | df2fff2 | 2009-08-31 21:11:12 -0700 | [diff] [blame] | 399 | free_netdev(net); |
| 400 | } |
| 401 | |
Greg Kroah-Hartman | df2fff2 | 2009-08-31 21:11:12 -0700 | [diff] [blame] | 402 | return ret; |
| 403 | } |
| 404 | |
K. Y. Srinivasan | 415b023 | 2011-04-29 13:45:12 -0700 | [diff] [blame] | 405 | static int netvsc_remove(struct hv_device *dev) |
Greg Kroah-Hartman | df2fff2 | 2009-08-31 21:11:12 -0700 | [diff] [blame] | 406 | { |
K. Y. Srinivasan | 415b023 | 2011-04-29 13:45:12 -0700 | [diff] [blame] | 407 | struct net_device *net = dev_get_drvdata(&dev->device); |
Greg Kroah-Hartman | df2fff2 | 2009-08-31 21:11:12 -0700 | [diff] [blame] | 408 | int ret; |
| 409 | |
Greg Kroah-Hartman | df2fff2 | 2009-08-31 21:11:12 -0700 | [diff] [blame] | 410 | if (net == NULL) { |
K. Y. Srinivasan | 415b023 | 2011-04-29 13:45:12 -0700 | [diff] [blame] | 411 | dev_err(&dev->device, "No net device to remove\n"); |
Greg Kroah-Hartman | df2fff2 | 2009-08-31 21:11:12 -0700 | [diff] [blame] | 412 | return 0; |
| 413 | } |
| 414 | |
Greg Kroah-Hartman | df2fff2 | 2009-08-31 21:11:12 -0700 | [diff] [blame] | 415 | /* Stop outbound asap */ |
| 416 | netif_stop_queue(net); |
| 417 | /* netif_carrier_off(net); */ |
| 418 | |
| 419 | unregister_netdev(net); |
| 420 | |
| 421 | /* |
| 422 | * Call to the vsc driver to let it know that the device is being |
| 423 | * removed |
| 424 | */ |
K. Y. Srinivasan | 58de3fc | 2011-05-10 07:55:01 -0700 | [diff] [blame] | 425 | ret = rndis_filter_device_remove(dev); |
Greg Kroah-Hartman | df2fff2 | 2009-08-31 21:11:12 -0700 | [diff] [blame] | 426 | if (ret != 0) { |
| 427 | /* TODO: */ |
Hank Janssen | eb335bc | 2011-03-29 13:58:48 -0700 | [diff] [blame] | 428 | netdev_err(net, "unable to remove vsc device (ret %d)\n", ret); |
Greg Kroah-Hartman | df2fff2 | 2009-08-31 21:11:12 -0700 | [diff] [blame] | 429 | } |
| 430 | |
| 431 | free_netdev(net); |
Greg Kroah-Hartman | df2fff2 | 2009-08-31 21:11:12 -0700 | [diff] [blame] | 432 | return ret; |
| 433 | } |
| 434 | |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 435 | static int netvsc_drv_exit_cb(struct device *dev, void *data) |
| 436 | { |
| 437 | struct device **curr = (struct device **)data; |
Greg Kroah-Hartman | 02fafbc | 2009-08-31 21:09:45 -0700 | [diff] [blame] | 438 | |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 439 | *curr = dev; |
Greg Kroah-Hartman | 02fafbc | 2009-08-31 21:09:45 -0700 | [diff] [blame] | 440 | /* stop iterating */ |
| 441 | return 1; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 442 | } |
| 443 | |
K. Y. Srinivasan | f1542a6 | 2011-05-10 07:55:16 -0700 | [diff] [blame] | 444 | /* The one and only one */ |
K. Y. Srinivasan | d489097 | 2011-05-10 07:55:17 -0700 | [diff] [blame] | 445 | static struct netvsc_driver netvsc_drv = { |
| 446 | .base.probe = netvsc_probe, |
| 447 | .base.remove = netvsc_remove, |
| 448 | }; |
K. Y. Srinivasan | f1542a6 | 2011-05-10 07:55:16 -0700 | [diff] [blame] | 449 | |
Greg Kroah-Hartman | bd1de70 | 2009-07-29 09:04:51 -0700 | [diff] [blame] | 450 | static void netvsc_drv_exit(void) |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 451 | { |
K. Y. Srinivasan | f752e9b | 2011-05-10 07:55:15 -0700 | [diff] [blame] | 452 | struct hv_driver *drv = &netvsc_drv.base; |
Greg Kroah-Hartman | 02fafbc | 2009-08-31 21:09:45 -0700 | [diff] [blame] | 453 | struct device *current_dev; |
Bill Pemberton | 2295ba2 | 2009-07-28 13:46:22 -0400 | [diff] [blame] | 454 | int ret; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 455 | |
Greg Kroah-Hartman | 02fafbc | 2009-08-31 21:09:45 -0700 | [diff] [blame] | 456 | while (1) { |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 457 | current_dev = NULL; |
| 458 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 459 | /* Get the device */ |
K. Y. Srinivasan | 150f939 | 2011-03-07 13:32:31 -0800 | [diff] [blame] | 460 | ret = driver_for_each_device(&drv->driver, NULL, |
Greg Kroah-Hartman | 02fafbc | 2009-08-31 21:09:45 -0700 | [diff] [blame] | 461 | ¤t_dev, netvsc_drv_exit_cb); |
Bill Pemberton | 2295ba2 | 2009-07-28 13:46:22 -0400 | [diff] [blame] | 462 | |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 463 | if (current_dev == NULL) |
| 464 | break; |
| 465 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 466 | /* Initiate removal from the top-down */ |
Hank Janssen | eb335bc | 2011-03-29 13:58:48 -0700 | [diff] [blame] | 467 | dev_err(current_dev, "unregistering device (%s)...\n", |
| 468 | dev_name(current_dev)); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 469 | |
| 470 | device_unregister(current_dev); |
| 471 | } |
| 472 | |
K. Y. Srinivasan | 150f939 | 2011-03-07 13:32:31 -0800 | [diff] [blame] | 473 | vmbus_child_driver_unregister(&drv->driver); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 474 | |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 475 | return; |
| 476 | } |
| 477 | |
Greg Kroah-Hartman | 21707be | 2009-09-02 11:53:59 -0700 | [diff] [blame] | 478 | static int netvsc_drv_init(int (*drv_init)(struct hv_driver *drv)) |
Greg Kroah-Hartman | df2fff2 | 2009-08-31 21:11:12 -0700 | [diff] [blame] | 479 | { |
K. Y. Srinivasan | f752e9b | 2011-05-10 07:55:15 -0700 | [diff] [blame] | 480 | struct netvsc_driver *net_drv_obj = &netvsc_drv; |
| 481 | struct hv_driver *drv = &netvsc_drv.base; |
Greg Kroah-Hartman | df2fff2 | 2009-08-31 21:11:12 -0700 | [diff] [blame] | 482 | int ret; |
| 483 | |
Haiyang Zhang | 72a2f5b | 2010-12-10 12:03:58 -0800 | [diff] [blame] | 484 | net_drv_obj->ring_buf_size = ring_size * PAGE_SIZE; |
| 485 | net_drv_obj->recv_cb = netvsc_recv_callback; |
| 486 | net_drv_obj->link_status_change = netvsc_linkstatus_callback; |
Greg Kroah-Hartman | df2fff2 | 2009-08-31 21:11:12 -0700 | [diff] [blame] | 487 | |
| 488 | /* Callback to client driver to complete the initialization */ |
Haiyang Zhang | 72a2f5b | 2010-12-10 12:03:58 -0800 | [diff] [blame] | 489 | drv_init(&net_drv_obj->base); |
Greg Kroah-Hartman | df2fff2 | 2009-08-31 21:11:12 -0700 | [diff] [blame] | 490 | |
K. Y. Srinivasan | 150f939 | 2011-03-07 13:32:31 -0800 | [diff] [blame] | 491 | drv->driver.name = net_drv_obj->base.name; |
Greg Kroah-Hartman | df2fff2 | 2009-08-31 21:11:12 -0700 | [diff] [blame] | 492 | |
Greg Kroah-Hartman | df2fff2 | 2009-08-31 21:11:12 -0700 | [diff] [blame] | 493 | /* The driver belongs to vmbus */ |
K. Y. Srinivasan | 150f939 | 2011-03-07 13:32:31 -0800 | [diff] [blame] | 494 | ret = vmbus_child_driver_register(&drv->driver); |
Greg Kroah-Hartman | df2fff2 | 2009-08-31 21:11:12 -0700 | [diff] [blame] | 495 | |
Greg Kroah-Hartman | df2fff2 | 2009-08-31 21:11:12 -0700 | [diff] [blame] | 496 | return ret; |
| 497 | } |
| 498 | |
K. Y. Srinivasan | 06e719d | 2010-05-07 17:52:17 -0600 | [diff] [blame] | 499 | static const struct dmi_system_id __initconst |
| 500 | hv_netvsc_dmi_table[] __maybe_unused = { |
| 501 | { |
| 502 | .ident = "Hyper-V", |
| 503 | .matches = { |
| 504 | DMI_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"), |
| 505 | DMI_MATCH(DMI_PRODUCT_NAME, "Virtual Machine"), |
| 506 | DMI_MATCH(DMI_BOARD_NAME, "Virtual Machine"), |
| 507 | }, |
| 508 | }, |
| 509 | { }, |
| 510 | }; |
| 511 | MODULE_DEVICE_TABLE(dmi, hv_netvsc_dmi_table); |
| 512 | |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 513 | static int __init netvsc_init(void) |
| 514 | { |
Hank Janssen | eb335bc | 2011-03-29 13:58:48 -0700 | [diff] [blame] | 515 | pr_info("initializing...."); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 516 | |
K. Y. Srinivasan | 06e719d | 2010-05-07 17:52:17 -0600 | [diff] [blame] | 517 | if (!dmi_check_system(hv_netvsc_dmi_table)) |
| 518 | return -ENODEV; |
| 519 | |
Haiyang Zhang | 5a71ae3 | 2010-12-10 12:03:55 -0800 | [diff] [blame] | 520 | return netvsc_drv_init(netvsc_initialize); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 521 | } |
| 522 | |
| 523 | static void __exit netvsc_exit(void) |
| 524 | { |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 525 | netvsc_drv_exit(); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 526 | } |
| 527 | |
K. Y. Srinivasan | 06e719d | 2010-05-07 17:52:17 -0600 | [diff] [blame] | 528 | static const struct pci_device_id __initconst |
| 529 | hv_netvsc_pci_table[] __maybe_unused = { |
| 530 | { PCI_DEVICE(0x1414, 0x5353) }, /* VGA compatible controller */ |
| 531 | { 0 } |
| 532 | }; |
| 533 | MODULE_DEVICE_TABLE(pci, hv_netvsc_pci_table); |
| 534 | |
Hank Janssen | 26c14cc | 2010-02-11 23:02:42 +0000 | [diff] [blame] | 535 | MODULE_LICENSE("GPL"); |
| 536 | MODULE_VERSION(HV_DRV_VERSION); |
Stephen Hemminger | 7880fc5 | 2010-05-04 09:58:52 -0700 | [diff] [blame] | 537 | MODULE_DESCRIPTION("Microsoft Hyper-V network driver"); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 538 | |
| 539 | module_init(netvsc_init); |
| 540 | module_exit(netvsc_exit); |