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 |
Jeff Kirsher | adf8d3f | 2013-12-06 06:28:47 -0800 | [diff] [blame] | 14 | * this program; if not, see <http://www.gnu.org/licenses/>. |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 15 | * |
| 16 | * Authors: |
| 17 | * Haiyang Zhang <haiyangz@microsoft.com> |
| 18 | * Hank Janssen <hjanssen@microsoft.com> |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 19 | */ |
Greg Kroah-Hartman | 5654e93 | 2009-07-14 15:08:20 -0700 | [diff] [blame] | 20 | #include <linux/kernel.h> |
K. Y. Srinivasan | 0c3b7b2 | 2011-02-11 09:59:43 -0800 | [diff] [blame] | 21 | #include <linux/sched.h> |
| 22 | #include <linux/wait.h> |
Bill Pemberton | 45da89e | 2009-07-29 17:00:15 -0400 | [diff] [blame] | 23 | #include <linux/highmem.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 24 | #include <linux/slab.h> |
Greg Kroah-Hartman | 0120ee0 | 2009-09-02 09:17:52 -0700 | [diff] [blame] | 25 | #include <linux/io.h> |
Stephen Hemminger | 9f8bd8b | 2010-05-04 09:58:54 -0700 | [diff] [blame] | 26 | #include <linux/if_ether.h> |
Hank Janssen | eb335bc | 2011-03-29 13:58:48 -0700 | [diff] [blame] | 27 | #include <linux/netdevice.h> |
Haiyang Zhang | 1f5f3a7 | 2012-03-12 10:20:50 +0000 | [diff] [blame] | 28 | #include <linux/if_vlan.h> |
Haiyang Zhang | 1ce09e8 | 2012-07-10 07:19:22 +0000 | [diff] [blame] | 29 | #include <linux/nls.h> |
Stephen Rothwell | d647230 | 2015-06-02 19:01:38 +1000 | [diff] [blame] | 30 | #include <linux/vmalloc.h> |
K. Y. Srinivasan | 3f335ea | 2011-05-12 19:34:15 -0700 | [diff] [blame] | 31 | |
K. Y. Srinivasan | 5ca7252 | 2011-05-12 19:34:37 -0700 | [diff] [blame] | 32 | #include "hyperv_net.h" |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 33 | |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 34 | |
Haiyang Zhang | 5b54dac | 2014-04-21 10:20:28 -0700 | [diff] [blame] | 35 | #define RNDIS_EXT_LEN PAGE_SIZE |
Greg Kroah-Hartman | e681b95 | 2009-08-28 16:26:27 -0700 | [diff] [blame] | 36 | struct rndis_request { |
Haiyang Zhang | c2a4efd | 2010-12-10 12:03:56 -0800 | [diff] [blame] | 37 | struct list_head list_ent; |
K. Y. Srinivasan | 98d7969 | 2011-05-10 07:55:42 -0700 | [diff] [blame] | 38 | struct completion wait_event; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 39 | |
Haiyang Zhang | c2a4efd | 2010-12-10 12:03:56 -0800 | [diff] [blame] | 40 | struct rndis_message response_msg; |
Haiyang Zhang | a3a6cab | 2012-10-02 05:30:24 +0000 | [diff] [blame] | 41 | /* |
| 42 | * The buffer for extended info after the RNDIS response message. It's |
| 43 | * referenced based on the data offset in the RNDIS message. Its size |
| 44 | * is enough for current needs, and should be sufficient for the near |
| 45 | * future. |
| 46 | */ |
| 47 | u8 response_ext[RNDIS_EXT_LEN]; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 48 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 49 | /* Simplify allocation by having a netvsc packet inline */ |
Haiyang Zhang | c2a4efd | 2010-12-10 12:03:56 -0800 | [diff] [blame] | 50 | struct hv_netvsc_packet pkt; |
Haiyang Zhang | 0f48917 | 2012-08-09 08:04:18 +0000 | [diff] [blame] | 51 | |
Haiyang Zhang | c2a4efd | 2010-12-10 12:03:56 -0800 | [diff] [blame] | 52 | struct rndis_message request_msg; |
Haiyang Zhang | 0f48917 | 2012-08-09 08:04:18 +0000 | [diff] [blame] | 53 | /* |
Haiyang Zhang | a3a6cab | 2012-10-02 05:30:24 +0000 | [diff] [blame] | 54 | * The buffer for the extended info after the RNDIS request message. |
| 55 | * It is referenced and sized in a similar way as response_ext. |
Haiyang Zhang | 0f48917 | 2012-08-09 08:04:18 +0000 | [diff] [blame] | 56 | */ |
Haiyang Zhang | a3a6cab | 2012-10-02 05:30:24 +0000 | [diff] [blame] | 57 | u8 request_ext[RNDIS_EXT_LEN]; |
Greg Kroah-Hartman | e681b95 | 2009-08-28 16:26:27 -0700 | [diff] [blame] | 58 | }; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 59 | |
Haiyang Zhang | 9c26aa0 | 2010-12-10 12:03:57 -0800 | [diff] [blame] | 60 | static struct rndis_device *get_rndis_device(void) |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 61 | { |
Greg Kroah-Hartman | e681b95 | 2009-08-28 16:26:27 -0700 | [diff] [blame] | 62 | struct rndis_device *device; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 63 | |
Greg Kroah-Hartman | e681b95 | 2009-08-28 16:26:27 -0700 | [diff] [blame] | 64 | device = kzalloc(sizeof(struct rndis_device), GFP_KERNEL); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 65 | if (!device) |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 66 | return NULL; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 67 | |
Greg Kroah-Hartman | 880fb89 | 2009-07-15 14:55:29 -0700 | [diff] [blame] | 68 | spin_lock_init(&device->request_lock); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 69 | |
Haiyang Zhang | c2a4efd | 2010-12-10 12:03:56 -0800 | [diff] [blame] | 70 | INIT_LIST_HEAD(&device->req_list); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 71 | |
Haiyang Zhang | c2a4efd | 2010-12-10 12:03:56 -0800 | [diff] [blame] | 72 | device->state = RNDIS_DEV_UNINITIALIZED; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 73 | |
| 74 | return device; |
| 75 | } |
| 76 | |
Haiyang Zhang | 9c26aa0 | 2010-12-10 12:03:57 -0800 | [diff] [blame] | 77 | static struct rndis_request *get_rndis_request(struct rndis_device *dev, |
Haiyang Zhang | c2a4efd | 2010-12-10 12:03:56 -0800 | [diff] [blame] | 78 | u32 msg_type, |
| 79 | u32 msg_len) |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 80 | { |
Greg Kroah-Hartman | e681b95 | 2009-08-28 16:26:27 -0700 | [diff] [blame] | 81 | struct rndis_request *request; |
Haiyang Zhang | c2a4efd | 2010-12-10 12:03:56 -0800 | [diff] [blame] | 82 | struct rndis_message *rndis_msg; |
Greg Kroah-Hartman | 9f33d05 | 2009-08-19 16:26:24 -0700 | [diff] [blame] | 83 | struct rndis_set_request *set; |
Greg Kroah-Hartman | 880fb89 | 2009-07-15 14:55:29 -0700 | [diff] [blame] | 84 | unsigned long flags; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 85 | |
Greg Kroah-Hartman | e681b95 | 2009-08-28 16:26:27 -0700 | [diff] [blame] | 86 | request = kzalloc(sizeof(struct rndis_request), GFP_KERNEL); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 87 | if (!request) |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 88 | return NULL; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 89 | |
K. Y. Srinivasan | 98d7969 | 2011-05-10 07:55:42 -0700 | [diff] [blame] | 90 | init_completion(&request->wait_event); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 91 | |
Haiyang Zhang | c2a4efd | 2010-12-10 12:03:56 -0800 | [diff] [blame] | 92 | rndis_msg = &request->request_msg; |
Haiyang Zhang | a388eb1 | 2010-12-10 12:04:00 -0800 | [diff] [blame] | 93 | rndis_msg->ndis_msg_type = msg_type; |
| 94 | rndis_msg->msg_len = msg_len; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 95 | |
Haiyang Zhang | 5b54dac | 2014-04-21 10:20:28 -0700 | [diff] [blame] | 96 | request->pkt.q_idx = 0; |
| 97 | |
Greg Kroah-Hartman | 0120ee0 | 2009-09-02 09:17:52 -0700 | [diff] [blame] | 98 | /* |
| 99 | * Set the request id. This field is always after the rndis header for |
| 100 | * request/response packet types so we just used the SetRequest as a |
| 101 | * template |
| 102 | */ |
Haiyang Zhang | a388eb1 | 2010-12-10 12:04:00 -0800 | [diff] [blame] | 103 | set = &rndis_msg->msg.set_req; |
| 104 | set->req_id = atomic_inc_return(&dev->new_req_id); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 105 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 106 | /* Add to the request list */ |
Haiyang Zhang | c2a4efd | 2010-12-10 12:03:56 -0800 | [diff] [blame] | 107 | spin_lock_irqsave(&dev->request_lock, flags); |
| 108 | list_add_tail(&request->list_ent, &dev->req_list); |
| 109 | spin_unlock_irqrestore(&dev->request_lock, flags); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 110 | |
| 111 | return request; |
| 112 | } |
| 113 | |
Haiyang Zhang | 9c26aa0 | 2010-12-10 12:03:57 -0800 | [diff] [blame] | 114 | static void put_rndis_request(struct rndis_device *dev, |
Haiyang Zhang | c2a4efd | 2010-12-10 12:03:56 -0800 | [diff] [blame] | 115 | struct rndis_request *req) |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 116 | { |
Greg Kroah-Hartman | 880fb89 | 2009-07-15 14:55:29 -0700 | [diff] [blame] | 117 | unsigned long flags; |
| 118 | |
Haiyang Zhang | c2a4efd | 2010-12-10 12:03:56 -0800 | [diff] [blame] | 119 | spin_lock_irqsave(&dev->request_lock, flags); |
| 120 | list_del(&req->list_ent); |
| 121 | spin_unlock_irqrestore(&dev->request_lock, flags); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 122 | |
Haiyang Zhang | c2a4efd | 2010-12-10 12:03:56 -0800 | [diff] [blame] | 123 | kfree(req); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 124 | } |
| 125 | |
Haiyang Zhang | 729a284 | 2011-05-27 06:21:54 -0700 | [diff] [blame] | 126 | static void dump_rndis_message(struct hv_device *hv_dev, |
| 127 | struct rndis_message *rndis_msg) |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 128 | { |
Vitaly Kuznetsov | 3d541ac | 2016-05-13 13:55:22 +0200 | [diff] [blame] | 129 | struct net_device *netdev = hv_get_drvdata(hv_dev); |
Haiyang Zhang | 729a284 | 2011-05-27 06:21:54 -0700 | [diff] [blame] | 130 | |
Haiyang Zhang | a388eb1 | 2010-12-10 12:04:00 -0800 | [diff] [blame] | 131 | switch (rndis_msg->ndis_msg_type) { |
Linus Walleij | 5149116 | 2012-05-11 22:17:07 +0000 | [diff] [blame] | 132 | case RNDIS_MSG_PACKET: |
| 133 | netdev_dbg(netdev, "RNDIS_MSG_PACKET (len %u, " |
Greg Kroah-Hartman | 0120ee0 | 2009-09-02 09:17:52 -0700 | [diff] [blame] | 134 | "data offset %u data len %u, # oob %u, " |
| 135 | "oob offset %u, oob len %u, pkt offset %u, " |
Haiyang Zhang | 729a284 | 2011-05-27 06:21:54 -0700 | [diff] [blame] | 136 | "pkt len %u\n", |
Haiyang Zhang | a388eb1 | 2010-12-10 12:04:00 -0800 | [diff] [blame] | 137 | rndis_msg->msg_len, |
| 138 | rndis_msg->msg.pkt.data_offset, |
| 139 | rndis_msg->msg.pkt.data_len, |
| 140 | rndis_msg->msg.pkt.num_oob_data_elements, |
| 141 | rndis_msg->msg.pkt.oob_data_offset, |
| 142 | rndis_msg->msg.pkt.oob_data_len, |
| 143 | rndis_msg->msg.pkt.per_pkt_info_offset, |
| 144 | rndis_msg->msg.pkt.per_pkt_info_len); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 145 | break; |
| 146 | |
Linus Walleij | 5149116 | 2012-05-11 22:17:07 +0000 | [diff] [blame] | 147 | case RNDIS_MSG_INIT_C: |
| 148 | netdev_dbg(netdev, "RNDIS_MSG_INIT_C " |
Greg Kroah-Hartman | 0120ee0 | 2009-09-02 09:17:52 -0700 | [diff] [blame] | 149 | "(len %u, id 0x%x, status 0x%x, major %d, minor %d, " |
| 150 | "device flags %d, max xfer size 0x%x, max pkts %u, " |
Haiyang Zhang | 729a284 | 2011-05-27 06:21:54 -0700 | [diff] [blame] | 151 | "pkt aligned %u)\n", |
Haiyang Zhang | a388eb1 | 2010-12-10 12:04:00 -0800 | [diff] [blame] | 152 | rndis_msg->msg_len, |
| 153 | rndis_msg->msg.init_complete.req_id, |
| 154 | rndis_msg->msg.init_complete.status, |
| 155 | rndis_msg->msg.init_complete.major_ver, |
| 156 | rndis_msg->msg.init_complete.minor_ver, |
| 157 | rndis_msg->msg.init_complete.dev_flags, |
| 158 | rndis_msg->msg.init_complete.max_xfer_size, |
| 159 | rndis_msg->msg.init_complete. |
| 160 | max_pkt_per_msg, |
| 161 | rndis_msg->msg.init_complete. |
| 162 | pkt_alignment_factor); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 163 | break; |
| 164 | |
Linus Walleij | 5149116 | 2012-05-11 22:17:07 +0000 | [diff] [blame] | 165 | case RNDIS_MSG_QUERY_C: |
| 166 | netdev_dbg(netdev, "RNDIS_MSG_QUERY_C " |
Greg Kroah-Hartman | 0120ee0 | 2009-09-02 09:17:52 -0700 | [diff] [blame] | 167 | "(len %u, id 0x%x, status 0x%x, buf len %u, " |
Haiyang Zhang | 729a284 | 2011-05-27 06:21:54 -0700 | [diff] [blame] | 168 | "buf offset %u)\n", |
Haiyang Zhang | a388eb1 | 2010-12-10 12:04:00 -0800 | [diff] [blame] | 169 | rndis_msg->msg_len, |
| 170 | rndis_msg->msg.query_complete.req_id, |
| 171 | rndis_msg->msg.query_complete.status, |
| 172 | rndis_msg->msg.query_complete. |
| 173 | info_buflen, |
| 174 | rndis_msg->msg.query_complete. |
| 175 | info_buf_offset); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 176 | break; |
| 177 | |
Linus Walleij | 5149116 | 2012-05-11 22:17:07 +0000 | [diff] [blame] | 178 | case RNDIS_MSG_SET_C: |
Haiyang Zhang | 729a284 | 2011-05-27 06:21:54 -0700 | [diff] [blame] | 179 | netdev_dbg(netdev, |
Linus Walleij | 5149116 | 2012-05-11 22:17:07 +0000 | [diff] [blame] | 180 | "RNDIS_MSG_SET_C (len %u, id 0x%x, status 0x%x)\n", |
Haiyang Zhang | a388eb1 | 2010-12-10 12:04:00 -0800 | [diff] [blame] | 181 | rndis_msg->msg_len, |
| 182 | rndis_msg->msg.set_complete.req_id, |
| 183 | rndis_msg->msg.set_complete.status); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 184 | break; |
| 185 | |
Linus Walleij | 5149116 | 2012-05-11 22:17:07 +0000 | [diff] [blame] | 186 | case RNDIS_MSG_INDICATE: |
| 187 | netdev_dbg(netdev, "RNDIS_MSG_INDICATE " |
Haiyang Zhang | 729a284 | 2011-05-27 06:21:54 -0700 | [diff] [blame] | 188 | "(len %u, status 0x%x, buf len %u, buf offset %u)\n", |
Haiyang Zhang | a388eb1 | 2010-12-10 12:04:00 -0800 | [diff] [blame] | 189 | rndis_msg->msg_len, |
| 190 | rndis_msg->msg.indicate_status.status, |
| 191 | rndis_msg->msg.indicate_status.status_buflen, |
| 192 | rndis_msg->msg.indicate_status.status_buf_offset); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 193 | break; |
| 194 | |
| 195 | default: |
Haiyang Zhang | 729a284 | 2011-05-27 06:21:54 -0700 | [diff] [blame] | 196 | netdev_dbg(netdev, "0x%x (len %u)\n", |
Haiyang Zhang | a388eb1 | 2010-12-10 12:04:00 -0800 | [diff] [blame] | 197 | rndis_msg->ndis_msg_type, |
| 198 | rndis_msg->msg_len); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 199 | break; |
| 200 | } |
| 201 | } |
| 202 | |
Haiyang Zhang | 9c26aa0 | 2010-12-10 12:03:57 -0800 | [diff] [blame] | 203 | static int rndis_filter_send_request(struct rndis_device *dev, |
Haiyang Zhang | c2a4efd | 2010-12-10 12:03:56 -0800 | [diff] [blame] | 204 | struct rndis_request *req) |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 205 | { |
Greg Kroah-Hartman | 0120ee0 | 2009-09-02 09:17:52 -0700 | [diff] [blame] | 206 | int ret; |
Nicolas Palix | 4193d4f | 2009-07-29 14:10:10 +0200 | [diff] [blame] | 207 | struct hv_netvsc_packet *packet; |
KY Srinivasan | b08cc79 | 2015-03-29 21:08:42 -0700 | [diff] [blame] | 208 | struct hv_page_buffer page_buf[2]; |
KY Srinivasan | a9f2e2d | 2015-12-01 16:43:13 -0800 | [diff] [blame] | 209 | struct hv_page_buffer *pb = page_buf; |
Vitaly Kuznetsov | 3d541ac | 2016-05-13 13:55:22 +0200 | [diff] [blame] | 210 | struct net_device_context *net_device_ctx = netdev_priv(dev->ndev); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 211 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 212 | /* Setup the packet to send it */ |
Haiyang Zhang | c2a4efd | 2010-12-10 12:03:56 -0800 | [diff] [blame] | 213 | packet = &req->pkt; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 214 | |
Haiyang Zhang | a388eb1 | 2010-12-10 12:04:00 -0800 | [diff] [blame] | 215 | packet->total_data_buflen = req->request_msg.msg_len; |
Haiyang Zhang | 72a2f5b | 2010-12-10 12:03:58 -0800 | [diff] [blame] | 216 | packet->page_buf_cnt = 1; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 217 | |
KY Srinivasan | a9f2e2d | 2015-12-01 16:43:13 -0800 | [diff] [blame] | 218 | pb[0].pfn = virt_to_phys(&req->request_msg) >> |
Greg Kroah-Hartman | 0120ee0 | 2009-09-02 09:17:52 -0700 | [diff] [blame] | 219 | PAGE_SHIFT; |
KY Srinivasan | a9f2e2d | 2015-12-01 16:43:13 -0800 | [diff] [blame] | 220 | pb[0].len = req->request_msg.msg_len; |
| 221 | pb[0].offset = |
Haiyang Zhang | c2a4efd | 2010-12-10 12:03:56 -0800 | [diff] [blame] | 222 | (unsigned long)&req->request_msg & (PAGE_SIZE - 1); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 223 | |
Haiyang Zhang | 99e3fcf | 2012-10-02 05:30:21 +0000 | [diff] [blame] | 224 | /* Add one page_buf when request_msg crossing page boundary */ |
KY Srinivasan | a9f2e2d | 2015-12-01 16:43:13 -0800 | [diff] [blame] | 225 | if (pb[0].offset + pb[0].len > PAGE_SIZE) { |
Haiyang Zhang | 99e3fcf | 2012-10-02 05:30:21 +0000 | [diff] [blame] | 226 | packet->page_buf_cnt++; |
KY Srinivasan | a9f2e2d | 2015-12-01 16:43:13 -0800 | [diff] [blame] | 227 | pb[0].len = PAGE_SIZE - |
| 228 | pb[0].offset; |
| 229 | pb[1].pfn = virt_to_phys((void *)&req->request_msg |
| 230 | + pb[0].len) >> PAGE_SHIFT; |
| 231 | pb[1].offset = 0; |
| 232 | pb[1].len = req->request_msg.msg_len - |
| 233 | pb[0].len; |
Haiyang Zhang | 99e3fcf | 2012-10-02 05:30:21 +0000 | [diff] [blame] | 234 | } |
| 235 | |
Vitaly Kuznetsov | 3d541ac | 2016-05-13 13:55:22 +0200 | [diff] [blame] | 236 | ret = netvsc_send(net_device_ctx->device_ctx, packet, NULL, &pb, NULL); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 237 | return ret; |
| 238 | } |
| 239 | |
Haiyang Zhang | 1b07da5 | 2014-03-04 14:11:06 -0800 | [diff] [blame] | 240 | static void rndis_set_link_state(struct rndis_device *rdev, |
| 241 | struct rndis_request *request) |
| 242 | { |
| 243 | u32 link_status; |
| 244 | struct rndis_query_complete *query_complete; |
| 245 | |
| 246 | query_complete = &request->response_msg.msg.query_complete; |
| 247 | |
| 248 | if (query_complete->status == RNDIS_STATUS_SUCCESS && |
| 249 | query_complete->info_buflen == sizeof(u32)) { |
| 250 | memcpy(&link_status, (void *)((unsigned long)query_complete + |
| 251 | query_complete->info_buf_offset), sizeof(u32)); |
| 252 | rdev->link_state = link_status != 0; |
| 253 | } |
| 254 | } |
| 255 | |
Haiyang Zhang | 9c26aa0 | 2010-12-10 12:03:57 -0800 | [diff] [blame] | 256 | static void rndis_filter_receive_response(struct rndis_device *dev, |
Haiyang Zhang | c2a4efd | 2010-12-10 12:03:56 -0800 | [diff] [blame] | 257 | struct rndis_message *resp) |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 258 | { |
Greg Kroah-Hartman | e681b95 | 2009-08-28 16:26:27 -0700 | [diff] [blame] | 259 | struct rndis_request *request = NULL; |
Greg Kroah-Hartman | 0e72761 | 2009-07-15 12:46:44 -0700 | [diff] [blame] | 260 | bool found = false; |
Greg Kroah-Hartman | 880fb89 | 2009-07-15 14:55:29 -0700 | [diff] [blame] | 261 | unsigned long flags; |
Vitaly Kuznetsov | 3d541ac | 2016-05-13 13:55:22 +0200 | [diff] [blame] | 262 | struct net_device *ndev = dev->ndev; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 263 | |
Haiyang Zhang | c2a4efd | 2010-12-10 12:03:56 -0800 | [diff] [blame] | 264 | spin_lock_irqsave(&dev->request_lock, flags); |
| 265 | list_for_each_entry(request, &dev->req_list, list_ent) { |
Greg Kroah-Hartman | 0120ee0 | 2009-09-02 09:17:52 -0700 | [diff] [blame] | 266 | /* |
| 267 | * All request/response message contains RequestId as the 1st |
| 268 | * field |
| 269 | */ |
Haiyang Zhang | a388eb1 | 2010-12-10 12:04:00 -0800 | [diff] [blame] | 270 | if (request->request_msg.msg.init_req.req_id |
| 271 | == resp->msg.init_complete.req_id) { |
Greg Kroah-Hartman | 0e72761 | 2009-07-15 12:46:44 -0700 | [diff] [blame] | 272 | found = true; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 273 | break; |
| 274 | } |
| 275 | } |
Haiyang Zhang | c2a4efd | 2010-12-10 12:03:56 -0800 | [diff] [blame] | 276 | spin_unlock_irqrestore(&dev->request_lock, flags); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 277 | |
Greg Kroah-Hartman | 0120ee0 | 2009-09-02 09:17:52 -0700 | [diff] [blame] | 278 | if (found) { |
Haiyang Zhang | a3a6cab | 2012-10-02 05:30:24 +0000 | [diff] [blame] | 279 | if (resp->msg_len <= |
| 280 | sizeof(struct rndis_message) + RNDIS_EXT_LEN) { |
Haiyang Zhang | c2a4efd | 2010-12-10 12:03:56 -0800 | [diff] [blame] | 281 | memcpy(&request->response_msg, resp, |
Haiyang Zhang | a388eb1 | 2010-12-10 12:04:00 -0800 | [diff] [blame] | 282 | resp->msg_len); |
Haiyang Zhang | 1b07da5 | 2014-03-04 14:11:06 -0800 | [diff] [blame] | 283 | if (request->request_msg.ndis_msg_type == |
| 284 | RNDIS_MSG_QUERY && request->request_msg.msg. |
| 285 | query_req.oid == RNDIS_OID_GEN_MEDIA_CONNECT_STATUS) |
| 286 | rndis_set_link_state(dev, request); |
Greg Kroah-Hartman | 0120ee0 | 2009-09-02 09:17:52 -0700 | [diff] [blame] | 287 | } else { |
Haiyang Zhang | d987115 | 2011-09-01 12:19:41 -0700 | [diff] [blame] | 288 | netdev_err(ndev, |
Hank Janssen | eb335bc | 2011-03-29 13:58:48 -0700 | [diff] [blame] | 289 | "rndis response buffer overflow " |
| 290 | "detected (size %u max %zu)\n", |
| 291 | resp->msg_len, |
KY Srinivasan | 86eedac | 2014-02-16 16:38:43 -0800 | [diff] [blame] | 292 | sizeof(struct rndis_message)); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 293 | |
Haiyang Zhang | a388eb1 | 2010-12-10 12:04:00 -0800 | [diff] [blame] | 294 | if (resp->ndis_msg_type == |
Linus Walleij | 5149116 | 2012-05-11 22:17:07 +0000 | [diff] [blame] | 295 | RNDIS_MSG_RESET_C) { |
Greg Kroah-Hartman | 0120ee0 | 2009-09-02 09:17:52 -0700 | [diff] [blame] | 296 | /* does not have a request id field */ |
Haiyang Zhang | a388eb1 | 2010-12-10 12:04:00 -0800 | [diff] [blame] | 297 | request->response_msg.msg.reset_complete. |
Linus Walleij | 007e5c8 | 2012-05-11 22:15:59 +0000 | [diff] [blame] | 298 | status = RNDIS_STATUS_BUFFER_OVERFLOW; |
Greg Kroah-Hartman | 0120ee0 | 2009-09-02 09:17:52 -0700 | [diff] [blame] | 299 | } else { |
Haiyang Zhang | a388eb1 | 2010-12-10 12:04:00 -0800 | [diff] [blame] | 300 | request->response_msg.msg. |
| 301 | init_complete.status = |
Linus Walleij | 007e5c8 | 2012-05-11 22:15:59 +0000 | [diff] [blame] | 302 | RNDIS_STATUS_BUFFER_OVERFLOW; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 303 | } |
| 304 | } |
| 305 | |
K. Y. Srinivasan | 98d7969 | 2011-05-10 07:55:42 -0700 | [diff] [blame] | 306 | complete(&request->wait_event); |
Greg Kroah-Hartman | 0120ee0 | 2009-09-02 09:17:52 -0700 | [diff] [blame] | 307 | } else { |
Haiyang Zhang | d987115 | 2011-09-01 12:19:41 -0700 | [diff] [blame] | 308 | netdev_err(ndev, |
Hank Janssen | eb335bc | 2011-03-29 13:58:48 -0700 | [diff] [blame] | 309 | "no rndis request found for this response " |
| 310 | "(id 0x%x res type 0x%x)\n", |
| 311 | resp->msg.init_complete.req_id, |
| 312 | resp->ndis_msg_type); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 313 | } |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 314 | } |
| 315 | |
Haiyang Zhang | 1f5f3a7 | 2012-03-12 10:20:50 +0000 | [diff] [blame] | 316 | /* |
| 317 | * Get the Per-Packet-Info with the specified type |
| 318 | * return NULL if not found. |
| 319 | */ |
| 320 | static inline void *rndis_get_ppi(struct rndis_packet *rpkt, u32 type) |
| 321 | { |
| 322 | struct rndis_per_packet_info *ppi; |
| 323 | int len; |
| 324 | |
| 325 | if (rpkt->per_pkt_info_offset == 0) |
| 326 | return NULL; |
| 327 | |
| 328 | ppi = (struct rndis_per_packet_info *)((ulong)rpkt + |
| 329 | rpkt->per_pkt_info_offset); |
| 330 | len = rpkt->per_pkt_info_len; |
| 331 | |
| 332 | while (len > 0) { |
| 333 | if (ppi->type == type) |
| 334 | return (void *)((ulong)ppi + ppi->ppi_offset); |
| 335 | len -= ppi->size; |
| 336 | ppi = (struct rndis_per_packet_info *)((ulong)ppi + ppi->size); |
| 337 | } |
| 338 | |
| 339 | return NULL; |
| 340 | } |
| 341 | |
KY Srinivasan | 10082f9 | 2015-12-01 16:43:18 -0800 | [diff] [blame] | 342 | static int rndis_filter_receive_data(struct rndis_device *dev, |
Haiyang Zhang | c2a4efd | 2010-12-10 12:03:56 -0800 | [diff] [blame] | 343 | struct rndis_message *msg, |
KY Srinivasan | 25b85ee | 2015-12-01 16:43:05 -0800 | [diff] [blame] | 344 | struct hv_netvsc_packet *pkt, |
KY Srinivasan | c4b20c6 | 2015-12-01 16:43:07 -0800 | [diff] [blame] | 345 | void **data, |
KY Srinivasan | 25b85ee | 2015-12-01 16:43:05 -0800 | [diff] [blame] | 346 | struct vmbus_channel *channel) |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 347 | { |
Haiyang Zhang | c2a4efd | 2010-12-10 12:03:56 -0800 | [diff] [blame] | 348 | struct rndis_packet *rndis_pkt; |
| 349 | u32 data_offset; |
Haiyang Zhang | 1f5f3a7 | 2012-03-12 10:20:50 +0000 | [diff] [blame] | 350 | struct ndis_pkt_8021q_info *vlan; |
KY Srinivasan | e3d605e | 2014-03-08 19:23:16 -0800 | [diff] [blame] | 351 | struct ndis_tcp_ip_checksum_info *csum_info; |
KY Srinivasan | 760d1e3 | 2015-12-01 16:43:19 -0800 | [diff] [blame] | 352 | u16 vlan_tci = 0; |
Vitaly Kuznetsov | 3d541ac | 2016-05-13 13:55:22 +0200 | [diff] [blame] | 353 | struct net_device_context *net_device_ctx = netdev_priv(dev->ndev); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 354 | |
Haiyang Zhang | a388eb1 | 2010-12-10 12:04:00 -0800 | [diff] [blame] | 355 | rndis_pkt = &msg->msg.pkt; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 356 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 357 | /* Remove the rndis header and pass it back up the stack */ |
Haiyang Zhang | a388eb1 | 2010-12-10 12:04:00 -0800 | [diff] [blame] | 358 | data_offset = RNDIS_HEADER_SIZE + rndis_pkt->data_offset; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 359 | |
Haiyang Zhang | 72a2f5b | 2010-12-10 12:03:58 -0800 | [diff] [blame] | 360 | pkt->total_data_buflen -= data_offset; |
Wei Yongjun | 4b8a8bc | 2012-02-01 20:17:23 +0000 | [diff] [blame] | 361 | |
| 362 | /* |
| 363 | * Make sure we got a valid RNDIS message, now total_data_buflen |
| 364 | * should be the data packet size plus the trailer padding size |
| 365 | */ |
| 366 | if (pkt->total_data_buflen < rndis_pkt->data_len) { |
Vitaly Kuznetsov | 3d541ac | 2016-05-13 13:55:22 +0200 | [diff] [blame] | 367 | netdev_err(dev->ndev, "rndis message buffer " |
Wei Yongjun | 4b8a8bc | 2012-02-01 20:17:23 +0000 | [diff] [blame] | 368 | "overflow detected (got %u, min %u)" |
| 369 | "...dropping this message!\n", |
| 370 | pkt->total_data_buflen, rndis_pkt->data_len); |
KY Srinivasan | 10082f9 | 2015-12-01 16:43:18 -0800 | [diff] [blame] | 371 | return NVSP_STAT_FAIL; |
Wei Yongjun | 4b8a8bc | 2012-02-01 20:17:23 +0000 | [diff] [blame] | 372 | } |
| 373 | |
| 374 | /* |
| 375 | * Remove the rndis trailer padding from rndis packet message |
| 376 | * rndis_pkt->data_len tell us the real data length, we only copy |
| 377 | * the data packet to the stack, without the rndis trailer padding |
| 378 | */ |
| 379 | pkt->total_data_buflen = rndis_pkt->data_len; |
KY Srinivasan | c4b20c6 | 2015-12-01 16:43:07 -0800 | [diff] [blame] | 380 | *data = (void *)((unsigned long)(*data) + data_offset); |
Haiyang Zhang | 669c1fc | 2011-09-01 12:19:47 -0700 | [diff] [blame] | 381 | |
Haiyang Zhang | 1f5f3a7 | 2012-03-12 10:20:50 +0000 | [diff] [blame] | 382 | vlan = rndis_get_ppi(rndis_pkt, IEEE_8021Q_INFO); |
| 383 | if (vlan) { |
KY Srinivasan | 760d1e3 | 2015-12-01 16:43:19 -0800 | [diff] [blame] | 384 | vlan_tci = VLAN_TAG_PRESENT | vlan->vlanid | |
Haiyang Zhang | 1f5f3a7 | 2012-03-12 10:20:50 +0000 | [diff] [blame] | 385 | (vlan->pri << VLAN_PRIO_SHIFT); |
Haiyang Zhang | 1f5f3a7 | 2012-03-12 10:20:50 +0000 | [diff] [blame] | 386 | } |
| 387 | |
KY Srinivasan | e3d605e | 2014-03-08 19:23:16 -0800 | [diff] [blame] | 388 | csum_info = rndis_get_ppi(rndis_pkt, TCPIP_CHKSUM_PKTINFO); |
Vitaly Kuznetsov | 3d541ac | 2016-05-13 13:55:22 +0200 | [diff] [blame] | 389 | return netvsc_recv_callback(net_device_ctx->device_ctx, pkt, data, |
KY Srinivasan | 760d1e3 | 2015-12-01 16:43:19 -0800 | [diff] [blame] | 390 | csum_info, channel, vlan_tci); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 391 | } |
| 392 | |
K. Y. Srinivasan | 5fcc411 | 2011-05-12 19:34:52 -0700 | [diff] [blame] | 393 | int rndis_filter_receive(struct hv_device *dev, |
KY Srinivasan | 25b85ee | 2015-12-01 16:43:05 -0800 | [diff] [blame] | 394 | struct hv_netvsc_packet *pkt, |
KY Srinivasan | c4b20c6 | 2015-12-01 16:43:07 -0800 | [diff] [blame] | 395 | void **data, |
KY Srinivasan | 25b85ee | 2015-12-01 16:43:05 -0800 | [diff] [blame] | 396 | struct vmbus_channel *channel) |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 397 | { |
Vitaly Kuznetsov | 3d541ac | 2016-05-13 13:55:22 +0200 | [diff] [blame] | 398 | struct net_device *ndev = hv_get_drvdata(dev); |
| 399 | struct net_device_context *net_device_ctx = netdev_priv(ndev); |
| 400 | struct netvsc_device *net_dev = net_device_ctx->nvdev; |
Haiyang Zhang | c2a4efd | 2010-12-10 12:03:56 -0800 | [diff] [blame] | 401 | struct rndis_device *rndis_dev; |
Haiyang Zhang | ef31bef | 2012-03-12 10:20:49 +0000 | [diff] [blame] | 402 | struct rndis_message *rndis_msg; |
Haiyang Zhang | 63f6921 | 2012-10-02 05:30:23 +0000 | [diff] [blame] | 403 | int ret = 0; |
K. Y. Srinivasan | 2ddd5e5 | 2011-09-13 10:59:49 -0700 | [diff] [blame] | 404 | |
Haiyang Zhang | 63f6921 | 2012-10-02 05:30:23 +0000 | [diff] [blame] | 405 | if (!net_dev) { |
KY Srinivasan | 10082f9 | 2015-12-01 16:43:18 -0800 | [diff] [blame] | 406 | ret = NVSP_STAT_FAIL; |
Haiyang Zhang | 63f6921 | 2012-10-02 05:30:23 +0000 | [diff] [blame] | 407 | goto exit; |
| 408 | } |
Bill Pemberton | 8a62d71 | 2010-05-05 15:27:47 -0400 | [diff] [blame] | 409 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 410 | /* Make sure the rndis device state is initialized */ |
Haiyang Zhang | 53d21fd | 2010-12-10 12:03:59 -0800 | [diff] [blame] | 411 | if (!net_dev->extension) { |
Haiyang Zhang | d987115 | 2011-09-01 12:19:41 -0700 | [diff] [blame] | 412 | netdev_err(ndev, "got rndis message but no rndis device - " |
Hank Janssen | eb335bc | 2011-03-29 13:58:48 -0700 | [diff] [blame] | 413 | "dropping this message!\n"); |
KY Srinivasan | 10082f9 | 2015-12-01 16:43:18 -0800 | [diff] [blame] | 414 | ret = NVSP_STAT_FAIL; |
Haiyang Zhang | 63f6921 | 2012-10-02 05:30:23 +0000 | [diff] [blame] | 415 | goto exit; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 416 | } |
| 417 | |
Haiyang Zhang | 53d21fd | 2010-12-10 12:03:59 -0800 | [diff] [blame] | 418 | rndis_dev = (struct rndis_device *)net_dev->extension; |
Haiyang Zhang | c2a4efd | 2010-12-10 12:03:56 -0800 | [diff] [blame] | 419 | if (rndis_dev->state == RNDIS_DEV_UNINITIALIZED) { |
Haiyang Zhang | d987115 | 2011-09-01 12:19:41 -0700 | [diff] [blame] | 420 | netdev_err(ndev, "got rndis message but rndis device " |
Hank Janssen | eb335bc | 2011-03-29 13:58:48 -0700 | [diff] [blame] | 421 | "uninitialized...dropping this message!\n"); |
KY Srinivasan | 10082f9 | 2015-12-01 16:43:18 -0800 | [diff] [blame] | 422 | ret = NVSP_STAT_FAIL; |
Haiyang Zhang | 63f6921 | 2012-10-02 05:30:23 +0000 | [diff] [blame] | 423 | goto exit; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 424 | } |
| 425 | |
KY Srinivasan | c4b20c6 | 2015-12-01 16:43:07 -0800 | [diff] [blame] | 426 | rndis_msg = *data; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 427 | |
Vitaly Kuznetsov | 3d541ac | 2016-05-13 13:55:22 +0200 | [diff] [blame] | 428 | if (netif_msg_rx_err(net_device_ctx)) |
Simon Xiao | 3f300ff | 2015-04-28 01:05:17 -0700 | [diff] [blame] | 429 | dump_rndis_message(dev, rndis_msg); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 430 | |
Haiyang Zhang | ef31bef | 2012-03-12 10:20:49 +0000 | [diff] [blame] | 431 | switch (rndis_msg->ndis_msg_type) { |
Linus Walleij | 5149116 | 2012-05-11 22:17:07 +0000 | [diff] [blame] | 432 | case RNDIS_MSG_PACKET: |
Greg Kroah-Hartman | 0120ee0 | 2009-09-02 09:17:52 -0700 | [diff] [blame] | 433 | /* data msg */ |
KY Srinivasan | 10082f9 | 2015-12-01 16:43:18 -0800 | [diff] [blame] | 434 | ret = rndis_filter_receive_data(rndis_dev, rndis_msg, pkt, |
| 435 | data, channel); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 436 | break; |
| 437 | |
Linus Walleij | 5149116 | 2012-05-11 22:17:07 +0000 | [diff] [blame] | 438 | case RNDIS_MSG_INIT_C: |
| 439 | case RNDIS_MSG_QUERY_C: |
| 440 | case RNDIS_MSG_SET_C: |
Greg Kroah-Hartman | 0120ee0 | 2009-09-02 09:17:52 -0700 | [diff] [blame] | 441 | /* completion msgs */ |
Haiyang Zhang | ef31bef | 2012-03-12 10:20:49 +0000 | [diff] [blame] | 442 | rndis_filter_receive_response(rndis_dev, rndis_msg); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 443 | break; |
| 444 | |
Linus Walleij | 5149116 | 2012-05-11 22:17:07 +0000 | [diff] [blame] | 445 | case RNDIS_MSG_INDICATE: |
Greg Kroah-Hartman | 0120ee0 | 2009-09-02 09:17:52 -0700 | [diff] [blame] | 446 | /* notification msgs */ |
Haiyang Zhang | 3a494e7 | 2014-06-19 18:34:36 -0700 | [diff] [blame] | 447 | netvsc_linkstatus_callback(dev, rndis_msg); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 448 | break; |
| 449 | default: |
Haiyang Zhang | d987115 | 2011-09-01 12:19:41 -0700 | [diff] [blame] | 450 | netdev_err(ndev, |
Hank Janssen | eb335bc | 2011-03-29 13:58:48 -0700 | [diff] [blame] | 451 | "unhandled rndis message (type %u len %u)\n", |
Haiyang Zhang | ef31bef | 2012-03-12 10:20:49 +0000 | [diff] [blame] | 452 | rndis_msg->ndis_msg_type, |
| 453 | rndis_msg->msg_len); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 454 | break; |
| 455 | } |
| 456 | |
Haiyang Zhang | 63f6921 | 2012-10-02 05:30:23 +0000 | [diff] [blame] | 457 | exit: |
Haiyang Zhang | 63f6921 | 2012-10-02 05:30:23 +0000 | [diff] [blame] | 458 | return ret; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 459 | } |
| 460 | |
Haiyang Zhang | 9c26aa0 | 2010-12-10 12:03:57 -0800 | [diff] [blame] | 461 | static int rndis_filter_query_device(struct rndis_device *dev, u32 oid, |
Haiyang Zhang | c2a4efd | 2010-12-10 12:03:56 -0800 | [diff] [blame] | 462 | void *result, u32 *result_size) |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 463 | { |
Greg Kroah-Hartman | e681b95 | 2009-08-28 16:26:27 -0700 | [diff] [blame] | 464 | struct rndis_request *request; |
Haiyang Zhang | c2a4efd | 2010-12-10 12:03:56 -0800 | [diff] [blame] | 465 | u32 inresult_size = *result_size; |
Greg Kroah-Hartman | 9f33d05 | 2009-08-19 16:26:24 -0700 | [diff] [blame] | 466 | struct rndis_query_request *query; |
Haiyang Zhang | c2a4efd | 2010-12-10 12:03:56 -0800 | [diff] [blame] | 467 | struct rndis_query_complete *query_complete; |
Greg Kroah-Hartman | 0120ee0 | 2009-09-02 09:17:52 -0700 | [diff] [blame] | 468 | int ret = 0; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 469 | |
Haiyang Zhang | c2a4efd | 2010-12-10 12:03:56 -0800 | [diff] [blame] | 470 | if (!result) |
Bill Pemberton | 8a62d71 | 2010-05-05 15:27:47 -0400 | [diff] [blame] | 471 | return -EINVAL; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 472 | |
Haiyang Zhang | c2a4efd | 2010-12-10 12:03:56 -0800 | [diff] [blame] | 473 | *result_size = 0; |
Linus Walleij | 5149116 | 2012-05-11 22:17:07 +0000 | [diff] [blame] | 474 | request = get_rndis_request(dev, RNDIS_MSG_QUERY, |
Greg Kroah-Hartman | 0120ee0 | 2009-09-02 09:17:52 -0700 | [diff] [blame] | 475 | RNDIS_MESSAGE_SIZE(struct rndis_query_request)); |
| 476 | if (!request) { |
K. Y. Srinivasan | de6e058 | 2011-08-25 09:49:18 -0700 | [diff] [blame] | 477 | ret = -ENOMEM; |
K. Y. Srinivasan | 1c62787 | 2011-08-25 09:49:24 -0700 | [diff] [blame] | 478 | goto cleanup; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 479 | } |
| 480 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 481 | /* Setup the rndis query */ |
Haiyang Zhang | a388eb1 | 2010-12-10 12:04:00 -0800 | [diff] [blame] | 482 | query = &request->request_msg.msg.query_req; |
| 483 | query->oid = oid; |
| 484 | query->info_buf_offset = sizeof(struct rndis_query_request); |
| 485 | query->info_buflen = 0; |
| 486 | query->dev_vc_handle = 0; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 487 | |
Haiyang Zhang | 5b54dac | 2014-04-21 10:20:28 -0700 | [diff] [blame] | 488 | if (oid == OID_GEN_RECEIVE_SCALE_CAPABILITIES) { |
| 489 | struct ndis_recv_scale_cap *cap; |
| 490 | |
| 491 | request->request_msg.msg_len += |
| 492 | sizeof(struct ndis_recv_scale_cap); |
| 493 | query->info_buflen = sizeof(struct ndis_recv_scale_cap); |
| 494 | cap = (struct ndis_recv_scale_cap *)((unsigned long)query + |
| 495 | query->info_buf_offset); |
| 496 | cap->hdr.type = NDIS_OBJECT_TYPE_RSS_CAPABILITIES; |
| 497 | cap->hdr.rev = NDIS_RECEIVE_SCALE_CAPABILITIES_REVISION_2; |
| 498 | cap->hdr.size = sizeof(struct ndis_recv_scale_cap); |
| 499 | } |
| 500 | |
Haiyang Zhang | 9c26aa0 | 2010-12-10 12:03:57 -0800 | [diff] [blame] | 501 | ret = rndis_filter_send_request(dev, request); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 502 | if (ret != 0) |
K. Y. Srinivasan | 1c62787 | 2011-08-25 09:49:24 -0700 | [diff] [blame] | 503 | goto cleanup; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 504 | |
Vitaly Kuznetsov | 5362855 | 2016-06-09 12:44:03 +0200 | [diff] [blame] | 505 | wait_for_completion(&request->wait_event); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 506 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 507 | /* Copy the response back */ |
Haiyang Zhang | a388eb1 | 2010-12-10 12:04:00 -0800 | [diff] [blame] | 508 | query_complete = &request->response_msg.msg.query_complete; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 509 | |
Haiyang Zhang | a388eb1 | 2010-12-10 12:04:00 -0800 | [diff] [blame] | 510 | if (query_complete->info_buflen > inresult_size) { |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 511 | ret = -1; |
K. Y. Srinivasan | 1c62787 | 2011-08-25 09:49:24 -0700 | [diff] [blame] | 512 | goto cleanup; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 513 | } |
| 514 | |
Haiyang Zhang | c2a4efd | 2010-12-10 12:03:56 -0800 | [diff] [blame] | 515 | memcpy(result, |
| 516 | (void *)((unsigned long)query_complete + |
Haiyang Zhang | a388eb1 | 2010-12-10 12:04:00 -0800 | [diff] [blame] | 517 | query_complete->info_buf_offset), |
| 518 | query_complete->info_buflen); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 519 | |
Haiyang Zhang | a388eb1 | 2010-12-10 12:04:00 -0800 | [diff] [blame] | 520 | *result_size = query_complete->info_buflen; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 521 | |
K. Y. Srinivasan | 1c62787 | 2011-08-25 09:49:24 -0700 | [diff] [blame] | 522 | cleanup: |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 523 | if (request) |
Haiyang Zhang | 9c26aa0 | 2010-12-10 12:03:57 -0800 | [diff] [blame] | 524 | put_rndis_request(dev, request); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 525 | |
| 526 | return ret; |
| 527 | } |
| 528 | |
Haiyang Zhang | 9c26aa0 | 2010-12-10 12:03:57 -0800 | [diff] [blame] | 529 | static int rndis_filter_query_device_mac(struct rndis_device *dev) |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 530 | { |
Stephen Hemminger | 9f8bd8b | 2010-05-04 09:58:54 -0700 | [diff] [blame] | 531 | u32 size = ETH_ALEN; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 532 | |
Haiyang Zhang | 9c26aa0 | 2010-12-10 12:03:57 -0800 | [diff] [blame] | 533 | return rndis_filter_query_device(dev, |
Greg Kroah-Hartman | 0120ee0 | 2009-09-02 09:17:52 -0700 | [diff] [blame] | 534 | RNDIS_OID_802_3_PERMANENT_ADDRESS, |
Haiyang Zhang | c2a4efd | 2010-12-10 12:03:56 -0800 | [diff] [blame] | 535 | dev->hw_mac_adr, &size); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 536 | } |
| 537 | |
Haiyang Zhang | 1ce09e8 | 2012-07-10 07:19:22 +0000 | [diff] [blame] | 538 | #define NWADR_STR "NetworkAddress" |
| 539 | #define NWADR_STRLEN 14 |
| 540 | |
Vitaly Kuznetsov | e834da9a | 2016-06-03 17:51:01 +0200 | [diff] [blame] | 541 | int rndis_filter_set_device_mac(struct net_device *ndev, char *mac) |
Haiyang Zhang | 1ce09e8 | 2012-07-10 07:19:22 +0000 | [diff] [blame] | 542 | { |
Vitaly Kuznetsov | 2625466 | 2016-06-03 17:50:59 +0200 | [diff] [blame] | 543 | struct netvsc_device *nvdev = net_device_to_netvsc_device(ndev); |
Haiyang Zhang | 1ce09e8 | 2012-07-10 07:19:22 +0000 | [diff] [blame] | 544 | struct rndis_device *rdev = nvdev->extension; |
Haiyang Zhang | 1ce09e8 | 2012-07-10 07:19:22 +0000 | [diff] [blame] | 545 | struct rndis_request *request; |
| 546 | struct rndis_set_request *set; |
| 547 | struct rndis_config_parameter_info *cpi; |
| 548 | wchar_t *cfg_nwadr, *cfg_mac; |
| 549 | struct rndis_set_complete *set_complete; |
| 550 | char macstr[2*ETH_ALEN+1]; |
| 551 | u32 extlen = sizeof(struct rndis_config_parameter_info) + |
| 552 | 2*NWADR_STRLEN + 4*ETH_ALEN; |
Nicholas Mc Guire | 999028c | 2015-01-25 15:48:23 +0100 | [diff] [blame] | 553 | int ret; |
Haiyang Zhang | 1ce09e8 | 2012-07-10 07:19:22 +0000 | [diff] [blame] | 554 | |
| 555 | request = get_rndis_request(rdev, RNDIS_MSG_SET, |
| 556 | RNDIS_MESSAGE_SIZE(struct rndis_set_request) + extlen); |
| 557 | if (!request) |
| 558 | return -ENOMEM; |
| 559 | |
| 560 | set = &request->request_msg.msg.set_req; |
| 561 | set->oid = RNDIS_OID_GEN_RNDIS_CONFIG_PARAMETER; |
| 562 | set->info_buflen = extlen; |
| 563 | set->info_buf_offset = sizeof(struct rndis_set_request); |
| 564 | set->dev_vc_handle = 0; |
| 565 | |
| 566 | cpi = (struct rndis_config_parameter_info *)((ulong)set + |
| 567 | set->info_buf_offset); |
| 568 | cpi->parameter_name_offset = |
| 569 | sizeof(struct rndis_config_parameter_info); |
| 570 | /* Multiply by 2 because host needs 2 bytes (utf16) for each char */ |
| 571 | cpi->parameter_name_length = 2*NWADR_STRLEN; |
| 572 | cpi->parameter_type = RNDIS_CONFIG_PARAM_TYPE_STRING; |
| 573 | cpi->parameter_value_offset = |
| 574 | cpi->parameter_name_offset + cpi->parameter_name_length; |
| 575 | /* Multiply by 4 because each MAC byte displayed as 2 utf16 chars */ |
| 576 | cpi->parameter_value_length = 4*ETH_ALEN; |
| 577 | |
| 578 | cfg_nwadr = (wchar_t *)((ulong)cpi + cpi->parameter_name_offset); |
| 579 | cfg_mac = (wchar_t *)((ulong)cpi + cpi->parameter_value_offset); |
| 580 | ret = utf8s_to_utf16s(NWADR_STR, NWADR_STRLEN, UTF16_HOST_ENDIAN, |
| 581 | cfg_nwadr, NWADR_STRLEN); |
| 582 | if (ret < 0) |
| 583 | goto cleanup; |
| 584 | snprintf(macstr, 2*ETH_ALEN+1, "%pm", mac); |
| 585 | ret = utf8s_to_utf16s(macstr, 2*ETH_ALEN, UTF16_HOST_ENDIAN, |
| 586 | cfg_mac, 2*ETH_ALEN); |
| 587 | if (ret < 0) |
| 588 | goto cleanup; |
| 589 | |
| 590 | ret = rndis_filter_send_request(rdev, request); |
| 591 | if (ret != 0) |
| 592 | goto cleanup; |
| 593 | |
Vitaly Kuznetsov | 5362855 | 2016-06-09 12:44:03 +0200 | [diff] [blame] | 594 | wait_for_completion(&request->wait_event); |
| 595 | |
| 596 | set_complete = &request->response_msg.msg.set_complete; |
| 597 | if (set_complete->status != RNDIS_STATUS_SUCCESS) { |
| 598 | netdev_err(ndev, "Fail to set MAC on host side:0x%x\n", |
| 599 | set_complete->status); |
| 600 | ret = -EINVAL; |
Haiyang Zhang | 1ce09e8 | 2012-07-10 07:19:22 +0000 | [diff] [blame] | 601 | } |
| 602 | |
| 603 | cleanup: |
| 604 | put_rndis_request(rdev, request); |
| 605 | return ret; |
| 606 | } |
| 607 | |
Lad, Prabhakar | da19fcd | 2015-02-05 15:06:33 +0000 | [diff] [blame] | 608 | static int |
Vitaly Kuznetsov | 426d954 | 2016-06-03 17:51:02 +0200 | [diff] [blame] | 609 | rndis_filter_set_offload_params(struct net_device *ndev, |
KY Srinivasan | 4a0e70a | 2014-03-08 19:23:15 -0800 | [diff] [blame] | 610 | struct ndis_offload_params *req_offloads) |
| 611 | { |
Vitaly Kuznetsov | 2625466 | 2016-06-03 17:50:59 +0200 | [diff] [blame] | 612 | struct netvsc_device *nvdev = net_device_to_netvsc_device(ndev); |
KY Srinivasan | 4a0e70a | 2014-03-08 19:23:15 -0800 | [diff] [blame] | 613 | struct rndis_device *rdev = nvdev->extension; |
KY Srinivasan | 4a0e70a | 2014-03-08 19:23:15 -0800 | [diff] [blame] | 614 | struct rndis_request *request; |
| 615 | struct rndis_set_request *set; |
| 616 | struct ndis_offload_params *offload_params; |
| 617 | struct rndis_set_complete *set_complete; |
| 618 | u32 extlen = sizeof(struct ndis_offload_params); |
Nicholas Mc Guire | 999028c | 2015-01-25 15:48:23 +0100 | [diff] [blame] | 619 | int ret; |
KY Srinivasan | af9893a | 2014-04-09 15:00:47 -0700 | [diff] [blame] | 620 | u32 vsp_version = nvdev->nvsp_version; |
| 621 | |
| 622 | if (vsp_version <= NVSP_PROTOCOL_VERSION_4) { |
| 623 | extlen = VERSION_4_OFFLOAD_SIZE; |
| 624 | /* On NVSP_PROTOCOL_VERSION_4 and below, we do not support |
| 625 | * UDP checksum offload. |
| 626 | */ |
| 627 | req_offloads->udp_ip_v4_csum = 0; |
| 628 | req_offloads->udp_ip_v6_csum = 0; |
| 629 | } |
KY Srinivasan | 4a0e70a | 2014-03-08 19:23:15 -0800 | [diff] [blame] | 630 | |
| 631 | request = get_rndis_request(rdev, RNDIS_MSG_SET, |
| 632 | RNDIS_MESSAGE_SIZE(struct rndis_set_request) + extlen); |
| 633 | if (!request) |
| 634 | return -ENOMEM; |
| 635 | |
| 636 | set = &request->request_msg.msg.set_req; |
| 637 | set->oid = OID_TCP_OFFLOAD_PARAMETERS; |
| 638 | set->info_buflen = extlen; |
| 639 | set->info_buf_offset = sizeof(struct rndis_set_request); |
| 640 | set->dev_vc_handle = 0; |
| 641 | |
| 642 | offload_params = (struct ndis_offload_params *)((ulong)set + |
| 643 | set->info_buf_offset); |
| 644 | *offload_params = *req_offloads; |
| 645 | offload_params->header.type = NDIS_OBJECT_TYPE_DEFAULT; |
| 646 | offload_params->header.revision = NDIS_OFFLOAD_PARAMETERS_REVISION_3; |
| 647 | offload_params->header.size = extlen; |
| 648 | |
| 649 | ret = rndis_filter_send_request(rdev, request); |
| 650 | if (ret != 0) |
| 651 | goto cleanup; |
| 652 | |
Vitaly Kuznetsov | 5362855 | 2016-06-09 12:44:03 +0200 | [diff] [blame] | 653 | wait_for_completion(&request->wait_event); |
| 654 | set_complete = &request->response_msg.msg.set_complete; |
| 655 | if (set_complete->status != RNDIS_STATUS_SUCCESS) { |
| 656 | netdev_err(ndev, "Fail to set offload on host side:0x%x\n", |
| 657 | set_complete->status); |
| 658 | ret = -EINVAL; |
KY Srinivasan | 4a0e70a | 2014-03-08 19:23:15 -0800 | [diff] [blame] | 659 | } |
| 660 | |
| 661 | cleanup: |
| 662 | put_rndis_request(rdev, request); |
| 663 | return ret; |
| 664 | } |
Haiyang Zhang | 1ce09e8 | 2012-07-10 07:19:22 +0000 | [diff] [blame] | 665 | |
Stephen Hemminger | 9477386 | 2016-08-23 12:17:45 -0700 | [diff] [blame] | 666 | static const u8 netvsc_hash_key[] = { |
Haiyang Zhang | 5b54dac | 2014-04-21 10:20:28 -0700 | [diff] [blame] | 667 | 0x6d, 0x5a, 0x56, 0xda, 0x25, 0x5b, 0x0e, 0xc2, |
| 668 | 0x41, 0x67, 0x25, 0x3d, 0x43, 0xa3, 0x8f, 0xb0, |
| 669 | 0xd0, 0xca, 0x2b, 0xcb, 0xae, 0x7b, 0x30, 0xb4, |
| 670 | 0x77, 0xcb, 0x2d, 0xa3, 0x80, 0x30, 0xf2, 0x0c, |
| 671 | 0x6a, 0x42, 0xb7, 0x3b, 0xbe, 0xac, 0x01, 0xfa |
| 672 | }; |
Stephen Hemminger | 9477386 | 2016-08-23 12:17:45 -0700 | [diff] [blame] | 673 | #define HASH_KEYLEN ARRAY_SIZE(netvsc_hash_key) |
Haiyang Zhang | 5b54dac | 2014-04-21 10:20:28 -0700 | [diff] [blame] | 674 | |
Lad, Prabhakar | da19fcd | 2015-02-05 15:06:33 +0000 | [diff] [blame] | 675 | static int rndis_filter_set_rss_param(struct rndis_device *rdev, int num_queue) |
Haiyang Zhang | 5b54dac | 2014-04-21 10:20:28 -0700 | [diff] [blame] | 676 | { |
Vitaly Kuznetsov | 3d541ac | 2016-05-13 13:55:22 +0200 | [diff] [blame] | 677 | struct net_device *ndev = rdev->ndev; |
Haiyang Zhang | 5b54dac | 2014-04-21 10:20:28 -0700 | [diff] [blame] | 678 | struct rndis_request *request; |
| 679 | struct rndis_set_request *set; |
| 680 | struct rndis_set_complete *set_complete; |
| 681 | u32 extlen = sizeof(struct ndis_recv_scale_param) + |
| 682 | 4*ITAB_NUM + HASH_KEYLEN; |
| 683 | struct ndis_recv_scale_param *rssp; |
| 684 | u32 *itab; |
| 685 | u8 *keyp; |
Nicholas Mc Guire | 999028c | 2015-01-25 15:48:23 +0100 | [diff] [blame] | 686 | int i, ret; |
Haiyang Zhang | 5b54dac | 2014-04-21 10:20:28 -0700 | [diff] [blame] | 687 | |
| 688 | request = get_rndis_request( |
| 689 | rdev, RNDIS_MSG_SET, |
| 690 | RNDIS_MESSAGE_SIZE(struct rndis_set_request) + extlen); |
| 691 | if (!request) |
| 692 | return -ENOMEM; |
| 693 | |
| 694 | set = &request->request_msg.msg.set_req; |
| 695 | set->oid = OID_GEN_RECEIVE_SCALE_PARAMETERS; |
| 696 | set->info_buflen = extlen; |
| 697 | set->info_buf_offset = sizeof(struct rndis_set_request); |
| 698 | set->dev_vc_handle = 0; |
| 699 | |
| 700 | rssp = (struct ndis_recv_scale_param *)(set + 1); |
| 701 | rssp->hdr.type = NDIS_OBJECT_TYPE_RSS_PARAMETERS; |
| 702 | rssp->hdr.rev = NDIS_RECEIVE_SCALE_PARAMETERS_REVISION_2; |
| 703 | rssp->hdr.size = sizeof(struct ndis_recv_scale_param); |
| 704 | rssp->flag = 0; |
| 705 | rssp->hashinfo = NDIS_HASH_FUNC_TOEPLITZ | NDIS_HASH_IPV4 | |
Haiyang Zhang | 4c87454 | 2014-10-30 14:07:17 -0700 | [diff] [blame] | 706 | NDIS_HASH_TCP_IPV4 | NDIS_HASH_IPV6 | |
| 707 | NDIS_HASH_TCP_IPV6; |
Haiyang Zhang | 5b54dac | 2014-04-21 10:20:28 -0700 | [diff] [blame] | 708 | rssp->indirect_tabsize = 4*ITAB_NUM; |
| 709 | rssp->indirect_taboffset = sizeof(struct ndis_recv_scale_param); |
| 710 | rssp->hashkey_size = HASH_KEYLEN; |
| 711 | rssp->kashkey_offset = rssp->indirect_taboffset + |
| 712 | rssp->indirect_tabsize; |
| 713 | |
| 714 | /* Set indirection table entries */ |
| 715 | itab = (u32 *)(rssp + 1); |
| 716 | for (i = 0; i < ITAB_NUM; i++) |
| 717 | itab[i] = i % num_queue; |
| 718 | |
| 719 | /* Set hask key values */ |
| 720 | keyp = (u8 *)((unsigned long)rssp + rssp->kashkey_offset); |
| 721 | for (i = 0; i < HASH_KEYLEN; i++) |
| 722 | keyp[i] = netvsc_hash_key[i]; |
| 723 | |
Haiyang Zhang | 5b54dac | 2014-04-21 10:20:28 -0700 | [diff] [blame] | 724 | ret = rndis_filter_send_request(rdev, request); |
| 725 | if (ret != 0) |
| 726 | goto cleanup; |
| 727 | |
Vitaly Kuznetsov | 5362855 | 2016-06-09 12:44:03 +0200 | [diff] [blame] | 728 | wait_for_completion(&request->wait_event); |
| 729 | set_complete = &request->response_msg.msg.set_complete; |
| 730 | if (set_complete->status != RNDIS_STATUS_SUCCESS) { |
| 731 | netdev_err(ndev, "Fail to set RSS parameters:0x%x\n", |
| 732 | set_complete->status); |
| 733 | ret = -EINVAL; |
Haiyang Zhang | 5b54dac | 2014-04-21 10:20:28 -0700 | [diff] [blame] | 734 | } |
| 735 | |
| 736 | cleanup: |
| 737 | put_rndis_request(rdev, request); |
| 738 | return ret; |
| 739 | } |
| 740 | |
Haiyang Zhang | 9c26aa0 | 2010-12-10 12:03:57 -0800 | [diff] [blame] | 741 | static int rndis_filter_query_device_link_status(struct rndis_device *dev) |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 742 | { |
Greg Kroah-Hartman | 0120ee0 | 2009-09-02 09:17:52 -0700 | [diff] [blame] | 743 | u32 size = sizeof(u32); |
K. Y. Srinivasan | 6f27457 | 2011-09-13 15:21:27 -0700 | [diff] [blame] | 744 | u32 link_status; |
| 745 | int ret; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 746 | |
K. Y. Srinivasan | 6f27457 | 2011-09-13 15:21:27 -0700 | [diff] [blame] | 747 | ret = rndis_filter_query_device(dev, |
Greg Kroah-Hartman | 0120ee0 | 2009-09-02 09:17:52 -0700 | [diff] [blame] | 748 | RNDIS_OID_GEN_MEDIA_CONNECT_STATUS, |
K. Y. Srinivasan | 6f27457 | 2011-09-13 15:21:27 -0700 | [diff] [blame] | 749 | &link_status, &size); |
K. Y. Srinivasan | 6f27457 | 2011-09-13 15:21:27 -0700 | [diff] [blame] | 750 | |
| 751 | return ret; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 752 | } |
| 753 | |
Haiyang Zhang | b37879e | 2016-08-04 10:42:14 -0700 | [diff] [blame] | 754 | static int rndis_filter_query_link_speed(struct rndis_device *dev) |
| 755 | { |
| 756 | u32 size = sizeof(u32); |
| 757 | u32 link_speed; |
| 758 | struct net_device_context *ndc; |
| 759 | int ret; |
| 760 | |
| 761 | ret = rndis_filter_query_device(dev, RNDIS_OID_GEN_LINK_SPEED, |
| 762 | &link_speed, &size); |
| 763 | |
| 764 | if (!ret) { |
| 765 | ndc = netdev_priv(dev->ndev); |
| 766 | |
| 767 | /* The link speed reported from host is in 100bps unit, so |
| 768 | * we convert it to Mbps here. |
| 769 | */ |
| 770 | ndc->speed = link_speed / 10000; |
| 771 | } |
| 772 | |
| 773 | return ret; |
| 774 | } |
| 775 | |
Haiyang Zhang | d426b2e | 2011-11-30 07:19:08 -0800 | [diff] [blame] | 776 | int rndis_filter_set_packet_filter(struct rndis_device *dev, u32 new_filter) |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 777 | { |
Greg Kroah-Hartman | e681b95 | 2009-08-28 16:26:27 -0700 | [diff] [blame] | 778 | struct rndis_request *request; |
Greg Kroah-Hartman | 9f33d05 | 2009-08-19 16:26:24 -0700 | [diff] [blame] | 779 | struct rndis_set_request *set; |
Haiyang Zhang | c2a4efd | 2010-12-10 12:03:56 -0800 | [diff] [blame] | 780 | struct rndis_set_complete *set_complete; |
Greg Kroah-Hartman | 4d64311 | 2009-07-14 15:09:36 -0700 | [diff] [blame] | 781 | u32 status; |
Nicholas Mc Guire | 999028c | 2015-01-25 15:48:23 +0100 | [diff] [blame] | 782 | int ret; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 783 | |
Linus Walleij | 5149116 | 2012-05-11 22:17:07 +0000 | [diff] [blame] | 784 | request = get_rndis_request(dev, RNDIS_MSG_SET, |
Greg Kroah-Hartman | 0120ee0 | 2009-09-02 09:17:52 -0700 | [diff] [blame] | 785 | RNDIS_MESSAGE_SIZE(struct rndis_set_request) + |
| 786 | sizeof(u32)); |
| 787 | if (!request) { |
K. Y. Srinivasan | 58ef397 | 2011-08-25 09:49:19 -0700 | [diff] [blame] | 788 | ret = -ENOMEM; |
K. Y. Srinivasan | 1c62787 | 2011-08-25 09:49:24 -0700 | [diff] [blame] | 789 | goto cleanup; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 790 | } |
| 791 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 792 | /* Setup the rndis set */ |
Haiyang Zhang | a388eb1 | 2010-12-10 12:04:00 -0800 | [diff] [blame] | 793 | set = &request->request_msg.msg.set_req; |
| 794 | set->oid = RNDIS_OID_GEN_CURRENT_PACKET_FILTER; |
| 795 | set->info_buflen = sizeof(u32); |
| 796 | set->info_buf_offset = sizeof(struct rndis_set_request); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 797 | |
Greg Kroah-Hartman | 0120ee0 | 2009-09-02 09:17:52 -0700 | [diff] [blame] | 798 | memcpy((void *)(unsigned long)set + sizeof(struct rndis_set_request), |
Haiyang Zhang | c2a4efd | 2010-12-10 12:03:56 -0800 | [diff] [blame] | 799 | &new_filter, sizeof(u32)); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 800 | |
Haiyang Zhang | 9c26aa0 | 2010-12-10 12:03:57 -0800 | [diff] [blame] | 801 | ret = rndis_filter_send_request(dev, request); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 802 | if (ret != 0) |
K. Y. Srinivasan | 1c62787 | 2011-08-25 09:49:24 -0700 | [diff] [blame] | 803 | goto cleanup; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 804 | |
Vitaly Kuznetsov | 5362855 | 2016-06-09 12:44:03 +0200 | [diff] [blame] | 805 | wait_for_completion(&request->wait_event); |
K. Y. Srinivasan | 98d7969 | 2011-05-10 07:55:42 -0700 | [diff] [blame] | 806 | |
Vitaly Kuznetsov | 5362855 | 2016-06-09 12:44:03 +0200 | [diff] [blame] | 807 | set_complete = &request->response_msg.msg.set_complete; |
| 808 | status = set_complete->status; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 809 | |
K. Y. Srinivasan | 1c62787 | 2011-08-25 09:49:24 -0700 | [diff] [blame] | 810 | cleanup: |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 811 | if (request) |
Haiyang Zhang | 9c26aa0 | 2010-12-10 12:03:57 -0800 | [diff] [blame] | 812 | put_rndis_request(dev, request); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 813 | return ret; |
| 814 | } |
| 815 | |
Haiyang Zhang | 9c26aa0 | 2010-12-10 12:03:57 -0800 | [diff] [blame] | 816 | static int rndis_filter_init_device(struct rndis_device *dev) |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 817 | { |
Greg Kroah-Hartman | e681b95 | 2009-08-28 16:26:27 -0700 | [diff] [blame] | 818 | struct rndis_request *request; |
Greg Kroah-Hartman | 9f33d05 | 2009-08-19 16:26:24 -0700 | [diff] [blame] | 819 | struct rndis_initialize_request *init; |
Haiyang Zhang | c2a4efd | 2010-12-10 12:03:56 -0800 | [diff] [blame] | 820 | struct rndis_initialize_complete *init_complete; |
Greg Kroah-Hartman | 4d64311 | 2009-07-14 15:09:36 -0700 | [diff] [blame] | 821 | u32 status; |
Nicholas Mc Guire | 999028c | 2015-01-25 15:48:23 +0100 | [diff] [blame] | 822 | int ret; |
Vitaly Kuznetsov | 2625466 | 2016-06-03 17:50:59 +0200 | [diff] [blame] | 823 | struct netvsc_device *nvdev = net_device_to_netvsc_device(dev->ndev); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 824 | |
Linus Walleij | 5149116 | 2012-05-11 22:17:07 +0000 | [diff] [blame] | 825 | request = get_rndis_request(dev, RNDIS_MSG_INIT, |
Greg Kroah-Hartman | 0120ee0 | 2009-09-02 09:17:52 -0700 | [diff] [blame] | 826 | RNDIS_MESSAGE_SIZE(struct rndis_initialize_request)); |
| 827 | if (!request) { |
K. Y. Srinivasan | bc49b926 | 2011-08-25 09:49:20 -0700 | [diff] [blame] | 828 | ret = -ENOMEM; |
K. Y. Srinivasan | 1c62787 | 2011-08-25 09:49:24 -0700 | [diff] [blame] | 829 | goto cleanup; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 830 | } |
| 831 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 832 | /* Setup the rndis set */ |
Haiyang Zhang | a388eb1 | 2010-12-10 12:04:00 -0800 | [diff] [blame] | 833 | init = &request->request_msg.msg.init_req; |
| 834 | init->major_ver = RNDIS_MAJOR_VERSION; |
| 835 | init->minor_ver = RNDIS_MINOR_VERSION; |
Haiyang Zhang | fb1d074 | 2012-10-02 05:30:19 +0000 | [diff] [blame] | 836 | init->max_xfer_size = 0x4000; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 837 | |
Haiyang Zhang | c2a4efd | 2010-12-10 12:03:56 -0800 | [diff] [blame] | 838 | dev->state = RNDIS_DEV_INITIALIZING; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 839 | |
Haiyang Zhang | 9c26aa0 | 2010-12-10 12:03:57 -0800 | [diff] [blame] | 840 | ret = rndis_filter_send_request(dev, request); |
Greg Kroah-Hartman | 0120ee0 | 2009-09-02 09:17:52 -0700 | [diff] [blame] | 841 | if (ret != 0) { |
Haiyang Zhang | c2a4efd | 2010-12-10 12:03:56 -0800 | [diff] [blame] | 842 | dev->state = RNDIS_DEV_UNINITIALIZED; |
K. Y. Srinivasan | 1c62787 | 2011-08-25 09:49:24 -0700 | [diff] [blame] | 843 | goto cleanup; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 844 | } |
| 845 | |
Vitaly Kuznetsov | 5362855 | 2016-06-09 12:44:03 +0200 | [diff] [blame] | 846 | wait_for_completion(&request->wait_event); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 847 | |
Haiyang Zhang | a388eb1 | 2010-12-10 12:04:00 -0800 | [diff] [blame] | 848 | init_complete = &request->response_msg.msg.init_complete; |
| 849 | status = init_complete->status; |
Greg Kroah-Hartman | 0120ee0 | 2009-09-02 09:17:52 -0700 | [diff] [blame] | 850 | if (status == RNDIS_STATUS_SUCCESS) { |
Haiyang Zhang | c2a4efd | 2010-12-10 12:03:56 -0800 | [diff] [blame] | 851 | dev->state = RNDIS_DEV_INITIALIZED; |
Haiyang Zhang | 7c3877f | 2015-03-26 09:03:37 -0700 | [diff] [blame] | 852 | nvdev->max_pkt = init_complete->max_pkt_per_msg; |
| 853 | nvdev->pkt_align = 1 << init_complete->pkt_alignment_factor; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 854 | ret = 0; |
Greg Kroah-Hartman | 0120ee0 | 2009-09-02 09:17:52 -0700 | [diff] [blame] | 855 | } else { |
Haiyang Zhang | c2a4efd | 2010-12-10 12:03:56 -0800 | [diff] [blame] | 856 | dev->state = RNDIS_DEV_UNINITIALIZED; |
K. Y. Srinivasan | bc49b926 | 2011-08-25 09:49:20 -0700 | [diff] [blame] | 857 | ret = -EINVAL; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 858 | } |
| 859 | |
K. Y. Srinivasan | 1c62787 | 2011-08-25 09:49:24 -0700 | [diff] [blame] | 860 | cleanup: |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 861 | if (request) |
Haiyang Zhang | 9c26aa0 | 2010-12-10 12:03:57 -0800 | [diff] [blame] | 862 | put_rndis_request(dev, request); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 863 | |
| 864 | return ret; |
| 865 | } |
| 866 | |
Haiyang Zhang | 9c26aa0 | 2010-12-10 12:03:57 -0800 | [diff] [blame] | 867 | static void rndis_filter_halt_device(struct rndis_device *dev) |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 868 | { |
Greg Kroah-Hartman | e681b95 | 2009-08-28 16:26:27 -0700 | [diff] [blame] | 869 | struct rndis_request *request; |
Greg Kroah-Hartman | 9f33d05 | 2009-08-19 16:26:24 -0700 | [diff] [blame] | 870 | struct rndis_halt_request *halt; |
Vitaly Kuznetsov | 3d541ac | 2016-05-13 13:55:22 +0200 | [diff] [blame] | 871 | struct net_device_context *net_device_ctx = netdev_priv(dev->ndev); |
| 872 | struct netvsc_device *nvdev = net_device_ctx->nvdev; |
| 873 | struct hv_device *hdev = net_device_ctx->device_ctx; |
Haiyang Zhang | ae9e63b | 2012-08-03 09:32:18 +0000 | [diff] [blame] | 874 | ulong flags; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 875 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 876 | /* Attempt to do a rndis device halt */ |
Linus Walleij | 5149116 | 2012-05-11 22:17:07 +0000 | [diff] [blame] | 877 | request = get_rndis_request(dev, RNDIS_MSG_HALT, |
Greg Kroah-Hartman | 0120ee0 | 2009-09-02 09:17:52 -0700 | [diff] [blame] | 878 | RNDIS_MESSAGE_SIZE(struct rndis_halt_request)); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 879 | if (!request) |
K. Y. Srinivasan | 1c62787 | 2011-08-25 09:49:24 -0700 | [diff] [blame] | 880 | goto cleanup; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 881 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 882 | /* Setup the rndis set */ |
Haiyang Zhang | a388eb1 | 2010-12-10 12:04:00 -0800 | [diff] [blame] | 883 | halt = &request->request_msg.msg.halt_req; |
| 884 | halt->req_id = atomic_inc_return(&dev->new_req_id); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 885 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 886 | /* Ignore return since this msg is optional. */ |
Haiyang Zhang | 9c26aa0 | 2010-12-10 12:03:57 -0800 | [diff] [blame] | 887 | rndis_filter_send_request(dev, request); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 888 | |
Haiyang Zhang | c2a4efd | 2010-12-10 12:03:56 -0800 | [diff] [blame] | 889 | dev->state = RNDIS_DEV_UNINITIALIZED; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 890 | |
K. Y. Srinivasan | 1c62787 | 2011-08-25 09:49:24 -0700 | [diff] [blame] | 891 | cleanup: |
Haiyang Zhang | ae9e63b | 2012-08-03 09:32:18 +0000 | [diff] [blame] | 892 | spin_lock_irqsave(&hdev->channel->inbound_lock, flags); |
| 893 | nvdev->destroy = true; |
| 894 | spin_unlock_irqrestore(&hdev->channel->inbound_lock, flags); |
| 895 | |
| 896 | /* Wait for all send completions */ |
| 897 | wait_event(nvdev->wait_drain, |
Haiyang Zhang | c0b558e | 2016-08-19 14:47:09 -0700 | [diff] [blame] | 898 | atomic_read(&nvdev->num_outstanding_sends) == 0 && |
| 899 | atomic_read(&nvdev->num_outstanding_recvs) == 0); |
Haiyang Zhang | ae9e63b | 2012-08-03 09:32:18 +0000 | [diff] [blame] | 900 | |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 901 | if (request) |
Haiyang Zhang | 9c26aa0 | 2010-12-10 12:03:57 -0800 | [diff] [blame] | 902 | put_rndis_request(dev, request); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 903 | } |
| 904 | |
Haiyang Zhang | 9c26aa0 | 2010-12-10 12:03:57 -0800 | [diff] [blame] | 905 | static int rndis_filter_open_device(struct rndis_device *dev) |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 906 | { |
Greg Kroah-Hartman | 0120ee0 | 2009-09-02 09:17:52 -0700 | [diff] [blame] | 907 | int ret; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 908 | |
Haiyang Zhang | c2a4efd | 2010-12-10 12:03:56 -0800 | [diff] [blame] | 909 | if (dev->state != RNDIS_DEV_INITIALIZED) |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 910 | return 0; |
| 911 | |
Haiyang Zhang | 9c26aa0 | 2010-12-10 12:03:57 -0800 | [diff] [blame] | 912 | ret = rndis_filter_set_packet_filter(dev, |
Greg Kroah-Hartman | 0120ee0 | 2009-09-02 09:17:52 -0700 | [diff] [blame] | 913 | NDIS_PACKET_TYPE_BROADCAST | |
Haiyang Zhang | 95beae9 | 2010-04-19 15:32:11 +0000 | [diff] [blame] | 914 | NDIS_PACKET_TYPE_ALL_MULTICAST | |
Greg Kroah-Hartman | 0120ee0 | 2009-09-02 09:17:52 -0700 | [diff] [blame] | 915 | NDIS_PACKET_TYPE_DIRECTED); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 916 | if (ret == 0) |
Haiyang Zhang | c2a4efd | 2010-12-10 12:03:56 -0800 | [diff] [blame] | 917 | dev->state = RNDIS_DEV_DATAINITIALIZED; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 918 | |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 919 | return ret; |
| 920 | } |
| 921 | |
Haiyang Zhang | 9c26aa0 | 2010-12-10 12:03:57 -0800 | [diff] [blame] | 922 | static int rndis_filter_close_device(struct rndis_device *dev) |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 923 | { |
| 924 | int ret; |
| 925 | |
Haiyang Zhang | c2a4efd | 2010-12-10 12:03:56 -0800 | [diff] [blame] | 926 | if (dev->state != RNDIS_DEV_DATAINITIALIZED) |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 927 | return 0; |
| 928 | |
Haiyang Zhang | 9c26aa0 | 2010-12-10 12:03:57 -0800 | [diff] [blame] | 929 | ret = rndis_filter_set_packet_filter(dev, 0); |
Haiyang Zhang | c3582a2 | 2014-12-01 13:28:39 -0800 | [diff] [blame] | 930 | if (ret == -ENODEV) |
| 931 | ret = 0; |
| 932 | |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 933 | if (ret == 0) |
Haiyang Zhang | c2a4efd | 2010-12-10 12:03:56 -0800 | [diff] [blame] | 934 | dev->state = RNDIS_DEV_INITIALIZED; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 935 | |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 936 | return ret; |
| 937 | } |
| 938 | |
Haiyang Zhang | 5b54dac | 2014-04-21 10:20:28 -0700 | [diff] [blame] | 939 | static void netvsc_sc_open(struct vmbus_channel *new_sc) |
| 940 | { |
Vitaly Kuznetsov | 3d541ac | 2016-05-13 13:55:22 +0200 | [diff] [blame] | 941 | struct net_device *ndev = |
| 942 | hv_get_drvdata(new_sc->primary_channel->device_obj); |
Vitaly Kuznetsov | 2625466 | 2016-06-03 17:50:59 +0200 | [diff] [blame] | 943 | struct netvsc_device *nvscdev = net_device_to_netvsc_device(ndev); |
Haiyang Zhang | 5b54dac | 2014-04-21 10:20:28 -0700 | [diff] [blame] | 944 | u16 chn_index = new_sc->offermsg.offer.sub_channel_index; |
| 945 | int ret; |
KY Srinivasan | b3e6b82 | 2015-07-22 11:42:32 -0700 | [diff] [blame] | 946 | unsigned long flags; |
Haiyang Zhang | 5b54dac | 2014-04-21 10:20:28 -0700 | [diff] [blame] | 947 | |
Haiyang Zhang | 5b54dac | 2014-04-21 10:20:28 -0700 | [diff] [blame] | 948 | if (chn_index >= nvscdev->num_chn) |
| 949 | return; |
| 950 | |
| 951 | set_per_channel_state(new_sc, nvscdev->sub_cb_buf + (chn_index - 1) * |
| 952 | NETVSC_PACKET_SIZE); |
| 953 | |
Haiyang Zhang | c0b558e | 2016-08-19 14:47:09 -0700 | [diff] [blame] | 954 | nvscdev->mrc[chn_index].buf = vzalloc(NETVSC_RECVSLOT_MAX * |
| 955 | sizeof(struct recv_comp_data)); |
| 956 | |
Haiyang Zhang | 5b54dac | 2014-04-21 10:20:28 -0700 | [diff] [blame] | 957 | ret = vmbus_open(new_sc, nvscdev->ring_size * PAGE_SIZE, |
| 958 | nvscdev->ring_size * PAGE_SIZE, NULL, 0, |
| 959 | netvsc_channel_cb, new_sc); |
| 960 | |
| 961 | if (ret == 0) |
| 962 | nvscdev->chn_table[chn_index] = new_sc; |
Haiyang Zhang | 3f73513 | 2016-03-23 14:54:48 -0700 | [diff] [blame] | 963 | |
| 964 | spin_lock_irqsave(&nvscdev->sc_lock, flags); |
| 965 | nvscdev->num_sc_offered--; |
| 966 | spin_unlock_irqrestore(&nvscdev->sc_lock, flags); |
| 967 | if (nvscdev->num_sc_offered == 0) |
| 968 | complete(&nvscdev->channel_init_wait); |
Haiyang Zhang | 5b54dac | 2014-04-21 10:20:28 -0700 | [diff] [blame] | 969 | } |
| 970 | |
Haiyang Zhang | bdbad57 | 2011-05-23 09:03:49 -0700 | [diff] [blame] | 971 | int rndis_filter_device_add(struct hv_device *dev, |
Stephen Hemminger | 796cc88 | 2016-08-23 12:17:47 -0700 | [diff] [blame] | 972 | void *additional_info) |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 973 | { |
| 974 | int ret; |
Vitaly Kuznetsov | 3d541ac | 2016-05-13 13:55:22 +0200 | [diff] [blame] | 975 | struct net_device *net = hv_get_drvdata(dev); |
| 976 | struct net_device_context *net_device_ctx = netdev_priv(net); |
K. Y. Srinivasan | 86c921a | 2011-09-13 10:59:54 -0700 | [diff] [blame] | 977 | struct netvsc_device *net_device; |
K. Y. Srinivasan | b13cc34 | 2011-09-13 10:59:55 -0700 | [diff] [blame] | 978 | struct rndis_device *rndis_device; |
K. Y. Srinivasan | 3c4deba | 2011-09-13 10:59:56 -0700 | [diff] [blame] | 979 | struct netvsc_device_info *device_info = additional_info; |
KY Srinivasan | 4a0e70a | 2014-03-08 19:23:15 -0800 | [diff] [blame] | 980 | struct ndis_offload_params offloads; |
Haiyang Zhang | 5b54dac | 2014-04-21 10:20:28 -0700 | [diff] [blame] | 981 | struct nvsp_message *init_packet; |
Haiyang Zhang | 5b54dac | 2014-04-21 10:20:28 -0700 | [diff] [blame] | 982 | struct ndis_recv_scale_cap rsscap; |
| 983 | u32 rsscap_size = sizeof(struct ndis_recv_scale_cap); |
Haiyang Zhang | 4d3c9d3 | 2014-11-12 14:07:44 -0800 | [diff] [blame] | 984 | u32 mtu, size; |
KY Srinivasan | e01ec21 | 2015-05-27 13:16:57 -0700 | [diff] [blame] | 985 | u32 num_rss_qs; |
KY Srinivasan | b3e6b82 | 2015-07-22 11:42:32 -0700 | [diff] [blame] | 986 | u32 sc_delta; |
KY Srinivasan | e01ec21 | 2015-05-27 13:16:57 -0700 | [diff] [blame] | 987 | const struct cpumask *node_cpu_mask; |
| 988 | u32 num_possible_rss_qs; |
KY Srinivasan | b3e6b82 | 2015-07-22 11:42:32 -0700 | [diff] [blame] | 989 | unsigned long flags; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 990 | |
K. Y. Srinivasan | b13cc34 | 2011-09-13 10:59:55 -0700 | [diff] [blame] | 991 | rndis_device = get_rndis_device(); |
| 992 | if (!rndis_device) |
K. Y. Srinivasan | 327efba | 2011-08-25 09:49:21 -0700 | [diff] [blame] | 993 | return -ENODEV; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 994 | |
Greg Kroah-Hartman | 0120ee0 | 2009-09-02 09:17:52 -0700 | [diff] [blame] | 995 | /* |
| 996 | * Let the inner driver handle this first to create the netvsc channel |
| 997 | * NOTE! Once the channel is created, we may get a receive callback |
| 998 | * (RndisFilterOnReceive()) before this call is completed |
| 999 | */ |
K. Y. Srinivasan | ce5bf66 | 2011-05-10 07:55:00 -0700 | [diff] [blame] | 1000 | ret = netvsc_device_add(dev, additional_info); |
Greg Kroah-Hartman | 0120ee0 | 2009-09-02 09:17:52 -0700 | [diff] [blame] | 1001 | if (ret != 0) { |
K. Y. Srinivasan | b13cc34 | 2011-09-13 10:59:55 -0700 | [diff] [blame] | 1002 | kfree(rndis_device); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 1003 | return ret; |
| 1004 | } |
| 1005 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 1006 | /* Initialize the rndis device */ |
Vitaly Kuznetsov | 3d541ac | 2016-05-13 13:55:22 +0200 | [diff] [blame] | 1007 | net_device = net_device_ctx->nvdev; |
Andrew Schwartzmeyer | 5999537 | 2015-02-26 16:27:14 -0800 | [diff] [blame] | 1008 | net_device->max_chn = 1; |
Haiyang Zhang | 5b54dac | 2014-04-21 10:20:28 -0700 | [diff] [blame] | 1009 | net_device->num_chn = 1; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 1010 | |
KY Srinivasan | b3e6b82 | 2015-07-22 11:42:32 -0700 | [diff] [blame] | 1011 | spin_lock_init(&net_device->sc_lock); |
| 1012 | |
K. Y. Srinivasan | b13cc34 | 2011-09-13 10:59:55 -0700 | [diff] [blame] | 1013 | net_device->extension = rndis_device; |
Vitaly Kuznetsov | 3d541ac | 2016-05-13 13:55:22 +0200 | [diff] [blame] | 1014 | rndis_device->ndev = net; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 1015 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 1016 | /* Send the rndis initialization message */ |
K. Y. Srinivasan | b13cc34 | 2011-09-13 10:59:55 -0700 | [diff] [blame] | 1017 | ret = rndis_filter_init_device(rndis_device); |
Greg Kroah-Hartman | 0120ee0 | 2009-09-02 09:17:52 -0700 | [diff] [blame] | 1018 | if (ret != 0) { |
Haiyang Zhang | 5243e7b | 2012-07-25 08:08:42 +0000 | [diff] [blame] | 1019 | rndis_filter_device_remove(dev); |
| 1020 | return ret; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 1021 | } |
| 1022 | |
Haiyang Zhang | 4d3c9d3 | 2014-11-12 14:07:44 -0800 | [diff] [blame] | 1023 | /* Get the MTU from the host */ |
| 1024 | size = sizeof(u32); |
| 1025 | ret = rndis_filter_query_device(rndis_device, |
| 1026 | RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE, |
| 1027 | &mtu, &size); |
Vitaly Kuznetsov | 0a1275c | 2016-05-13 13:55:23 +0200 | [diff] [blame] | 1028 | if (ret == 0 && size == sizeof(u32) && mtu < net->mtu) |
| 1029 | net->mtu = mtu; |
Haiyang Zhang | 4d3c9d3 | 2014-11-12 14:07:44 -0800 | [diff] [blame] | 1030 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 1031 | /* Get the mac address */ |
K. Y. Srinivasan | b13cc34 | 2011-09-13 10:59:55 -0700 | [diff] [blame] | 1032 | ret = rndis_filter_query_device_mac(rndis_device); |
Greg Kroah-Hartman | 0120ee0 | 2009-09-02 09:17:52 -0700 | [diff] [blame] | 1033 | if (ret != 0) { |
Haiyang Zhang | 5243e7b | 2012-07-25 08:08:42 +0000 | [diff] [blame] | 1034 | rndis_filter_device_remove(dev); |
| 1035 | return ret; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 1036 | } |
| 1037 | |
K. Y. Srinivasan | 3c4deba | 2011-09-13 10:59:56 -0700 | [diff] [blame] | 1038 | memcpy(device_info->mac_adr, rndis_device->hw_mac_adr, ETH_ALEN); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 1039 | |
KY Srinivasan | 4a0e70a | 2014-03-08 19:23:15 -0800 | [diff] [blame] | 1040 | /* Turn on the offloads; the host supports all of the relevant |
| 1041 | * offloads. |
| 1042 | */ |
| 1043 | memset(&offloads, 0, sizeof(struct ndis_offload_params)); |
| 1044 | /* A value of zero means "no change"; now turn on what we |
| 1045 | * want. |
| 1046 | */ |
| 1047 | offloads.ip_v4_csum = NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED; |
| 1048 | offloads.tcp_ip_v4_csum = NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED; |
| 1049 | offloads.udp_ip_v4_csum = NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED; |
| 1050 | offloads.tcp_ip_v6_csum = NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED; |
| 1051 | offloads.udp_ip_v6_csum = NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED; |
| 1052 | offloads.lso_v2_ipv4 = NDIS_OFFLOAD_PARAMETERS_LSOV2_ENABLED; |
| 1053 | |
Vitaly Kuznetsov | 426d954 | 2016-06-03 17:51:02 +0200 | [diff] [blame] | 1054 | ret = rndis_filter_set_offload_params(net, &offloads); |
KY Srinivasan | 4a0e70a | 2014-03-08 19:23:15 -0800 | [diff] [blame] | 1055 | if (ret) |
| 1056 | goto err_dev_remv; |
| 1057 | |
K. Y. Srinivasan | b13cc34 | 2011-09-13 10:59:55 -0700 | [diff] [blame] | 1058 | rndis_filter_query_device_link_status(rndis_device); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 1059 | |
K. Y. Srinivasan | 6f27457 | 2011-09-13 15:21:27 -0700 | [diff] [blame] | 1060 | device_info->link_state = rndis_device->link_state; |
Hank Janssen | eb335bc | 2011-03-29 13:58:48 -0700 | [diff] [blame] | 1061 | |
K. Y. Srinivasan | 6f27457 | 2011-09-13 15:21:27 -0700 | [diff] [blame] | 1062 | dev_info(&dev->device, "Device MAC %pM link state %s\n", |
K. Y. Srinivasan | b13cc34 | 2011-09-13 10:59:55 -0700 | [diff] [blame] | 1063 | rndis_device->hw_mac_adr, |
K. Y. Srinivasan | 6f27457 | 2011-09-13 15:21:27 -0700 | [diff] [blame] | 1064 | device_info->link_state ? "down" : "up"); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 1065 | |
Haiyang Zhang | 5b54dac | 2014-04-21 10:20:28 -0700 | [diff] [blame] | 1066 | if (net_device->nvsp_version < NVSP_PROTOCOL_VERSION_5) |
| 1067 | return 0; |
| 1068 | |
Haiyang Zhang | b37879e | 2016-08-04 10:42:14 -0700 | [diff] [blame] | 1069 | rndis_filter_query_link_speed(rndis_device); |
| 1070 | |
Haiyang Zhang | 5b54dac | 2014-04-21 10:20:28 -0700 | [diff] [blame] | 1071 | /* vRSS setup */ |
| 1072 | memset(&rsscap, 0, rsscap_size); |
| 1073 | ret = rndis_filter_query_device(rndis_device, |
| 1074 | OID_GEN_RECEIVE_SCALE_CAPABILITIES, |
| 1075 | &rsscap, &rsscap_size); |
| 1076 | if (ret || rsscap.num_recv_que < 2) |
| 1077 | goto out; |
| 1078 | |
Haiyang Zhang | 9efc2f7 | 2016-03-23 09:43:10 -0700 | [diff] [blame] | 1079 | net_device->max_chn = min_t(u32, VRSS_CHANNEL_MAX, rsscap.num_recv_que); |
KY Srinivasan | e01ec21 | 2015-05-27 13:16:57 -0700 | [diff] [blame] | 1080 | |
Haiyang Zhang | 9efc2f7 | 2016-03-23 09:43:10 -0700 | [diff] [blame] | 1081 | num_rss_qs = min(device_info->max_num_vrss_chns, net_device->max_chn); |
KY Srinivasan | e01ec21 | 2015-05-27 13:16:57 -0700 | [diff] [blame] | 1082 | |
| 1083 | /* |
| 1084 | * We will limit the VRSS channels to the number CPUs in the NUMA node |
| 1085 | * the primary channel is currently bound to. |
| 1086 | */ |
| 1087 | node_cpu_mask = cpumask_of_node(cpu_to_node(dev->channel->target_cpu)); |
| 1088 | num_possible_rss_qs = cpumask_weight(node_cpu_mask); |
Andrew Schwartzmeyer | 8ebdcc5 | 2015-08-11 17:14:31 -0700 | [diff] [blame] | 1089 | |
| 1090 | /* We will use the given number of channels if available. */ |
| 1091 | if (device_info->num_chn && device_info->num_chn < net_device->max_chn) |
| 1092 | net_device->num_chn = device_info->num_chn; |
| 1093 | else |
| 1094 | net_device->num_chn = min(num_possible_rss_qs, num_rss_qs); |
KY Srinivasan | e01ec21 | 2015-05-27 13:16:57 -0700 | [diff] [blame] | 1095 | |
KY Srinivasan | b3e6b82 | 2015-07-22 11:42:32 -0700 | [diff] [blame] | 1096 | num_rss_qs = net_device->num_chn - 1; |
| 1097 | net_device->num_sc_offered = num_rss_qs; |
| 1098 | |
Haiyang Zhang | 5b54dac | 2014-04-21 10:20:28 -0700 | [diff] [blame] | 1099 | if (net_device->num_chn == 1) |
| 1100 | goto out; |
| 1101 | |
| 1102 | net_device->sub_cb_buf = vzalloc((net_device->num_chn - 1) * |
| 1103 | NETVSC_PACKET_SIZE); |
| 1104 | if (!net_device->sub_cb_buf) { |
| 1105 | net_device->num_chn = 1; |
| 1106 | dev_info(&dev->device, "No memory for subchannels.\n"); |
| 1107 | goto out; |
| 1108 | } |
| 1109 | |
| 1110 | vmbus_set_sc_create_callback(dev->channel, netvsc_sc_open); |
| 1111 | |
| 1112 | init_packet = &net_device->channel_init_pkt; |
| 1113 | memset(init_packet, 0, sizeof(struct nvsp_message)); |
| 1114 | init_packet->hdr.msg_type = NVSP_MSG5_TYPE_SUBCHANNEL; |
| 1115 | init_packet->msg.v5_msg.subchn_req.op = NVSP_SUBCHANNEL_ALLOCATE; |
| 1116 | init_packet->msg.v5_msg.subchn_req.num_subchannels = |
| 1117 | net_device->num_chn - 1; |
| 1118 | ret = vmbus_sendpacket(dev->channel, init_packet, |
| 1119 | sizeof(struct nvsp_message), |
| 1120 | (unsigned long)init_packet, |
| 1121 | VM_PKT_DATA_INBAND, |
| 1122 | VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED); |
| 1123 | if (ret) |
| 1124 | goto out; |
Vitaly Kuznetsov | 5362855 | 2016-06-09 12:44:03 +0200 | [diff] [blame] | 1125 | wait_for_completion(&net_device->channel_init_wait); |
| 1126 | |
Haiyang Zhang | 5b54dac | 2014-04-21 10:20:28 -0700 | [diff] [blame] | 1127 | if (init_packet->msg.v5_msg.subchn_comp.status != |
| 1128 | NVSP_STAT_SUCCESS) { |
| 1129 | ret = -ENODEV; |
| 1130 | goto out; |
| 1131 | } |
| 1132 | net_device->num_chn = 1 + |
| 1133 | init_packet->msg.v5_msg.subchn_comp.num_subchannels; |
| 1134 | |
Haiyang Zhang | 5b54dac | 2014-04-21 10:20:28 -0700 | [diff] [blame] | 1135 | ret = rndis_filter_set_rss_param(rndis_device, net_device->num_chn); |
| 1136 | |
KY Srinivasan | b3e6b82 | 2015-07-22 11:42:32 -0700 | [diff] [blame] | 1137 | /* |
Haiyang Zhang | d66ab51 | 2016-03-04 15:07:43 -0800 | [diff] [blame] | 1138 | * Set the number of sub-channels to be received. |
KY Srinivasan | b3e6b82 | 2015-07-22 11:42:32 -0700 | [diff] [blame] | 1139 | */ |
| 1140 | spin_lock_irqsave(&net_device->sc_lock, flags); |
| 1141 | sc_delta = num_rss_qs - (net_device->num_chn - 1); |
| 1142 | net_device->num_sc_offered -= sc_delta; |
| 1143 | spin_unlock_irqrestore(&net_device->sc_lock, flags); |
| 1144 | |
Haiyang Zhang | 5b54dac | 2014-04-21 10:20:28 -0700 | [diff] [blame] | 1145 | out: |
Andrew Schwartzmeyer | 5999537 | 2015-02-26 16:27:14 -0800 | [diff] [blame] | 1146 | if (ret) { |
| 1147 | net_device->max_chn = 1; |
Haiyang Zhang | 5b54dac | 2014-04-21 10:20:28 -0700 | [diff] [blame] | 1148 | net_device->num_chn = 1; |
Haiyang Zhang | d66ab51 | 2016-03-04 15:07:43 -0800 | [diff] [blame] | 1149 | net_device->num_sc_offered = 0; |
Andrew Schwartzmeyer | 5999537 | 2015-02-26 16:27:14 -0800 | [diff] [blame] | 1150 | } |
KY Srinivasan | b3e6b82 | 2015-07-22 11:42:32 -0700 | [diff] [blame] | 1151 | |
Haiyang Zhang | 5b54dac | 2014-04-21 10:20:28 -0700 | [diff] [blame] | 1152 | return 0; /* return 0 because primary channel can be used alone */ |
KY Srinivasan | 4a0e70a | 2014-03-08 19:23:15 -0800 | [diff] [blame] | 1153 | |
| 1154 | err_dev_remv: |
| 1155 | rndis_filter_device_remove(dev); |
| 1156 | return ret; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 1157 | } |
| 1158 | |
Haiyang Zhang | df06bcf | 2011-05-23 09:03:47 -0700 | [diff] [blame] | 1159 | void rndis_filter_device_remove(struct hv_device *dev) |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 1160 | { |
Vitaly Kuznetsov | 2625466 | 2016-06-03 17:50:59 +0200 | [diff] [blame] | 1161 | struct netvsc_device *net_dev = hv_device_to_netvsc_device(dev); |
Haiyang Zhang | 53d21fd | 2010-12-10 12:03:59 -0800 | [diff] [blame] | 1162 | struct rndis_device *rndis_dev = net_dev->extension; |
Haiyang Zhang | d66ab51 | 2016-03-04 15:07:43 -0800 | [diff] [blame] | 1163 | |
| 1164 | /* If not all subchannel offers are complete, wait for them until |
| 1165 | * completion to avoid race. |
| 1166 | */ |
Vitaly Kuznetsov | 5362855 | 2016-06-09 12:44:03 +0200 | [diff] [blame] | 1167 | if (net_dev->num_sc_offered > 0) |
| 1168 | wait_for_completion(&net_dev->channel_init_wait); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 1169 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 1170 | /* Halt and release the rndis device */ |
Haiyang Zhang | 9c26aa0 | 2010-12-10 12:03:57 -0800 | [diff] [blame] | 1171 | rndis_filter_halt_device(rndis_dev); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 1172 | |
Haiyang Zhang | c2a4efd | 2010-12-10 12:03:56 -0800 | [diff] [blame] | 1173 | kfree(rndis_dev); |
Haiyang Zhang | 53d21fd | 2010-12-10 12:03:59 -0800 | [diff] [blame] | 1174 | net_dev->extension = NULL; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 1175 | |
K. Y. Srinivasan | 3fae5c8 | 2011-05-10 07:55:02 -0700 | [diff] [blame] | 1176 | netvsc_device_remove(dev); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 1177 | } |
| 1178 | |
Vitaly Kuznetsov | 2f5fa6c | 2016-06-03 17:51:00 +0200 | [diff] [blame] | 1179 | int rndis_filter_open(struct netvsc_device *nvdev) |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 1180 | { |
Vitaly Kuznetsov | 2f5fa6c | 2016-06-03 17:51:00 +0200 | [diff] [blame] | 1181 | if (!nvdev) |
Bill Pemberton | 8a62d71 | 2010-05-05 15:27:47 -0400 | [diff] [blame] | 1182 | return -EINVAL; |
| 1183 | |
Vitaly Kuznetsov | 2f5fa6c | 2016-06-03 17:51:00 +0200 | [diff] [blame] | 1184 | if (atomic_inc_return(&nvdev->open_cnt) != 1) |
KY Srinivasan | 84bf9ce | 2016-04-14 16:31:54 -0700 | [diff] [blame] | 1185 | return 0; |
| 1186 | |
Vitaly Kuznetsov | 2f5fa6c | 2016-06-03 17:51:00 +0200 | [diff] [blame] | 1187 | return rndis_filter_open_device(nvdev->extension); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 1188 | } |
| 1189 | |
Vitaly Kuznetsov | 2f5fa6c | 2016-06-03 17:51:00 +0200 | [diff] [blame] | 1190 | int rndis_filter_close(struct netvsc_device *nvdev) |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 1191 | { |
Haiyang Zhang | 5fccab3 | 2012-02-05 12:13:08 +0000 | [diff] [blame] | 1192 | if (!nvdev) |
Bill Pemberton | 8a62d71 | 2010-05-05 15:27:47 -0400 | [diff] [blame] | 1193 | return -EINVAL; |
| 1194 | |
KY Srinivasan | 84bf9ce | 2016-04-14 16:31:54 -0700 | [diff] [blame] | 1195 | if (atomic_dec_return(&nvdev->open_cnt) != 0) |
| 1196 | return 0; |
| 1197 | |
Haiyang Zhang | 5fccab3 | 2012-02-05 12:13:08 +0000 | [diff] [blame] | 1198 | return rndis_filter_close_device(nvdev->extension); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 1199 | } |