Commit | Line | Data |
---|---|---|
fceaf24a | 1 | /* |
fceaf24a HJ |
2 | * Copyright (c) 2009, Microsoft Corporation. |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms and conditions of the GNU General Public License, | |
6 | * version 2, as published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope it will be useful, but WITHOUT | |
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
11 | * more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License along with | |
14 | * this program; if not, write to the Free Software Foundation, Inc., 59 Temple | |
15 | * Place - Suite 330, Boston, MA 02111-1307 USA. | |
16 | * | |
17 | * Authors: | |
18 | * Haiyang Zhang <haiyangz@microsoft.com> | |
19 | * Hank Janssen <hjanssen@microsoft.com> | |
fceaf24a | 20 | */ |
5654e932 | 21 | #include <linux/kernel.h> |
0c3b7b2f S |
22 | #include <linux/sched.h> |
23 | #include <linux/wait.h> | |
45da89e5 | 24 | #include <linux/highmem.h> |
5a0e3ad6 | 25 | #include <linux/slab.h> |
0120ee0d | 26 | #include <linux/io.h> |
9f8bd8ba | 27 | #include <linux/if_ether.h> |
eb335bc4 | 28 | #include <linux/netdevice.h> |
3f335ea2 | 29 | |
5ca7252a | 30 | #include "hyperv_net.h" |
fceaf24a | 31 | |
fceaf24a | 32 | |
e681b954 | 33 | struct rndis_request { |
c2a4efdd | 34 | struct list_head list_ent; |
98d79690 | 35 | struct completion wait_event; |
fceaf24a | 36 | |
0120ee0d GKH |
37 | /* |
38 | * FIXME: We assumed a fixed size response here. If we do ever need to | |
39 | * handle a bigger response, we can either define a max response | |
40 | * message or add a response buffer variable above this field | |
41 | */ | |
c2a4efdd | 42 | struct rndis_message response_msg; |
fceaf24a | 43 | |
454f18a9 | 44 | /* Simplify allocation by having a netvsc packet inline */ |
c2a4efdd HZ |
45 | struct hv_netvsc_packet pkt; |
46 | struct hv_page_buffer buf; | |
454f18a9 | 47 | /* FIXME: We assumed a fixed size request here. */ |
c2a4efdd | 48 | struct rndis_message request_msg; |
e681b954 | 49 | }; |
fceaf24a | 50 | |
9c26aa0d | 51 | static void rndis_filter_send_completion(void *ctx); |
0120ee0d | 52 | |
9c26aa0d | 53 | static void rndis_filter_send_request_completion(void *ctx); |
454f18a9 BP |
54 | |
55 | ||
fceaf24a | 56 | |
9c26aa0d | 57 | static struct rndis_device *get_rndis_device(void) |
fceaf24a | 58 | { |
e681b954 | 59 | struct rndis_device *device; |
fceaf24a | 60 | |
e681b954 | 61 | device = kzalloc(sizeof(struct rndis_device), GFP_KERNEL); |
fceaf24a | 62 | if (!device) |
fceaf24a | 63 | return NULL; |
fceaf24a | 64 | |
880fb89c | 65 | spin_lock_init(&device->request_lock); |
fceaf24a | 66 | |
c2a4efdd | 67 | INIT_LIST_HEAD(&device->req_list); |
fceaf24a | 68 | |
c2a4efdd | 69 | device->state = RNDIS_DEV_UNINITIALIZED; |
fceaf24a HJ |
70 | |
71 | return device; | |
72 | } | |
73 | ||
9c26aa0d | 74 | static struct rndis_request *get_rndis_request(struct rndis_device *dev, |
c2a4efdd HZ |
75 | u32 msg_type, |
76 | u32 msg_len) | |
fceaf24a | 77 | { |
e681b954 | 78 | struct rndis_request *request; |
c2a4efdd | 79 | struct rndis_message *rndis_msg; |
9f33d054 | 80 | struct rndis_set_request *set; |
880fb89c | 81 | unsigned long flags; |
fceaf24a | 82 | |
e681b954 | 83 | request = kzalloc(sizeof(struct rndis_request), GFP_KERNEL); |
fceaf24a | 84 | if (!request) |
fceaf24a | 85 | return NULL; |
fceaf24a | 86 | |
98d79690 | 87 | init_completion(&request->wait_event); |
fceaf24a | 88 | |
c2a4efdd | 89 | rndis_msg = &request->request_msg; |
a388eb17 HZ |
90 | rndis_msg->ndis_msg_type = msg_type; |
91 | rndis_msg->msg_len = msg_len; | |
fceaf24a | 92 | |
0120ee0d GKH |
93 | /* |
94 | * Set the request id. This field is always after the rndis header for | |
95 | * request/response packet types so we just used the SetRequest as a | |
96 | * template | |
97 | */ | |
a388eb17 HZ |
98 | set = &rndis_msg->msg.set_req; |
99 | set->req_id = atomic_inc_return(&dev->new_req_id); | |
fceaf24a | 100 | |
454f18a9 | 101 | /* Add to the request list */ |
c2a4efdd HZ |
102 | spin_lock_irqsave(&dev->request_lock, flags); |
103 | list_add_tail(&request->list_ent, &dev->req_list); | |
104 | spin_unlock_irqrestore(&dev->request_lock, flags); | |
fceaf24a HJ |
105 | |
106 | return request; | |
107 | } | |
108 | ||
9c26aa0d | 109 | static void put_rndis_request(struct rndis_device *dev, |
c2a4efdd | 110 | struct rndis_request *req) |
fceaf24a | 111 | { |
880fb89c GKH |
112 | unsigned long flags; |
113 | ||
c2a4efdd HZ |
114 | spin_lock_irqsave(&dev->request_lock, flags); |
115 | list_del(&req->list_ent); | |
116 | spin_unlock_irqrestore(&dev->request_lock, flags); | |
fceaf24a | 117 | |
c2a4efdd | 118 | kfree(req); |
fceaf24a HJ |
119 | } |
120 | ||
729a2849 HZ |
121 | static void dump_rndis_message(struct hv_device *hv_dev, |
122 | struct rndis_message *rndis_msg) | |
fceaf24a | 123 | { |
2ddd5e5f S |
124 | struct net_device *netdev; |
125 | struct netvsc_device *net_device; | |
126 | ||
127 | net_device = hv_get_drvdata(hv_dev); | |
128 | netdev = net_device->ndev; | |
729a2849 | 129 | |
a388eb17 | 130 | switch (rndis_msg->ndis_msg_type) { |
fceaf24a | 131 | case REMOTE_NDIS_PACKET_MSG: |
729a2849 | 132 | netdev_dbg(netdev, "REMOTE_NDIS_PACKET_MSG (len %u, " |
0120ee0d GKH |
133 | "data offset %u data len %u, # oob %u, " |
134 | "oob offset %u, oob len %u, pkt offset %u, " | |
729a2849 | 135 | "pkt len %u\n", |
a388eb17 HZ |
136 | rndis_msg->msg_len, |
137 | rndis_msg->msg.pkt.data_offset, | |
138 | rndis_msg->msg.pkt.data_len, | |
139 | rndis_msg->msg.pkt.num_oob_data_elements, | |
140 | rndis_msg->msg.pkt.oob_data_offset, | |
141 | rndis_msg->msg.pkt.oob_data_len, | |
142 | rndis_msg->msg.pkt.per_pkt_info_offset, | |
143 | rndis_msg->msg.pkt.per_pkt_info_len); | |
fceaf24a HJ |
144 | break; |
145 | ||
146 | case REMOTE_NDIS_INITIALIZE_CMPLT: | |
729a2849 | 147 | netdev_dbg(netdev, "REMOTE_NDIS_INITIALIZE_CMPLT " |
0120ee0d GKH |
148 | "(len %u, id 0x%x, status 0x%x, major %d, minor %d, " |
149 | "device flags %d, max xfer size 0x%x, max pkts %u, " | |
729a2849 | 150 | "pkt aligned %u)\n", |
a388eb17 HZ |
151 | rndis_msg->msg_len, |
152 | rndis_msg->msg.init_complete.req_id, | |
153 | rndis_msg->msg.init_complete.status, | |
154 | rndis_msg->msg.init_complete.major_ver, | |
155 | rndis_msg->msg.init_complete.minor_ver, | |
156 | rndis_msg->msg.init_complete.dev_flags, | |
157 | rndis_msg->msg.init_complete.max_xfer_size, | |
158 | rndis_msg->msg.init_complete. | |
159 | max_pkt_per_msg, | |
160 | rndis_msg->msg.init_complete. | |
161 | pkt_alignment_factor); | |
fceaf24a HJ |
162 | break; |
163 | ||
164 | case REMOTE_NDIS_QUERY_CMPLT: | |
729a2849 | 165 | netdev_dbg(netdev, "REMOTE_NDIS_QUERY_CMPLT " |
0120ee0d | 166 | "(len %u, id 0x%x, status 0x%x, buf len %u, " |
729a2849 | 167 | "buf offset %u)\n", |
a388eb17 HZ |
168 | rndis_msg->msg_len, |
169 | rndis_msg->msg.query_complete.req_id, | |
170 | rndis_msg->msg.query_complete.status, | |
171 | rndis_msg->msg.query_complete. | |
172 | info_buflen, | |
173 | rndis_msg->msg.query_complete. | |
174 | info_buf_offset); | |
fceaf24a HJ |
175 | break; |
176 | ||
177 | case REMOTE_NDIS_SET_CMPLT: | |
729a2849 HZ |
178 | netdev_dbg(netdev, |
179 | "REMOTE_NDIS_SET_CMPLT (len %u, id 0x%x, status 0x%x)\n", | |
a388eb17 HZ |
180 | rndis_msg->msg_len, |
181 | rndis_msg->msg.set_complete.req_id, | |
182 | rndis_msg->msg.set_complete.status); | |
fceaf24a HJ |
183 | break; |
184 | ||
185 | case REMOTE_NDIS_INDICATE_STATUS_MSG: | |
729a2849 HZ |
186 | netdev_dbg(netdev, "REMOTE_NDIS_INDICATE_STATUS_MSG " |
187 | "(len %u, status 0x%x, buf len %u, buf offset %u)\n", | |
a388eb17 HZ |
188 | rndis_msg->msg_len, |
189 | rndis_msg->msg.indicate_status.status, | |
190 | rndis_msg->msg.indicate_status.status_buflen, | |
191 | rndis_msg->msg.indicate_status.status_buf_offset); | |
fceaf24a HJ |
192 | break; |
193 | ||
194 | default: | |
729a2849 | 195 | netdev_dbg(netdev, "0x%x (len %u)\n", |
a388eb17 HZ |
196 | rndis_msg->ndis_msg_type, |
197 | rndis_msg->msg_len); | |
fceaf24a HJ |
198 | break; |
199 | } | |
200 | } | |
201 | ||
9c26aa0d | 202 | static int rndis_filter_send_request(struct rndis_device *dev, |
c2a4efdd | 203 | struct rndis_request *req) |
fceaf24a | 204 | { |
0120ee0d | 205 | int ret; |
4193d4f4 | 206 | struct hv_netvsc_packet *packet; |
fceaf24a | 207 | |
454f18a9 | 208 | /* Setup the packet to send it */ |
c2a4efdd | 209 | packet = &req->pkt; |
fceaf24a | 210 | |
72a2f5bd | 211 | packet->is_data_pkt = false; |
a388eb17 | 212 | packet->total_data_buflen = req->request_msg.msg_len; |
72a2f5bd | 213 | packet->page_buf_cnt = 1; |
fceaf24a | 214 | |
ca623ad3 | 215 | packet->page_buf[0].pfn = virt_to_phys(&req->request_msg) >> |
0120ee0d | 216 | PAGE_SHIFT; |
ca623ad3 HZ |
217 | packet->page_buf[0].len = req->request_msg.msg_len; |
218 | packet->page_buf[0].offset = | |
c2a4efdd | 219 | (unsigned long)&req->request_msg & (PAGE_SIZE - 1); |
fceaf24a | 220 | |
72a2f5bd HZ |
221 | packet->completion.send.send_completion_ctx = req;/* packet; */ |
222 | packet->completion.send.send_completion = | |
9c26aa0d | 223 | rndis_filter_send_request_completion; |
72a2f5bd | 224 | packet->completion.send.send_completion_tid = (unsigned long)dev; |
fceaf24a | 225 | |
0ec6ff40 | 226 | ret = netvsc_send(dev->net_dev->dev, packet); |
fceaf24a HJ |
227 | return ret; |
228 | } | |
229 | ||
9c26aa0d | 230 | static void rndis_filter_receive_response(struct rndis_device *dev, |
c2a4efdd | 231 | struct rndis_message *resp) |
fceaf24a | 232 | { |
e681b954 | 233 | struct rndis_request *request = NULL; |
0e727613 | 234 | bool found = false; |
880fb89c | 235 | unsigned long flags; |
2ddd5e5f S |
236 | struct net_device *ndev; |
237 | ||
238 | ndev = dev->net_dev->ndev; | |
fceaf24a | 239 | |
c2a4efdd HZ |
240 | spin_lock_irqsave(&dev->request_lock, flags); |
241 | list_for_each_entry(request, &dev->req_list, list_ent) { | |
0120ee0d GKH |
242 | /* |
243 | * All request/response message contains RequestId as the 1st | |
244 | * field | |
245 | */ | |
a388eb17 HZ |
246 | if (request->request_msg.msg.init_req.req_id |
247 | == resp->msg.init_complete.req_id) { | |
0e727613 | 248 | found = true; |
fceaf24a HJ |
249 | break; |
250 | } | |
251 | } | |
c2a4efdd | 252 | spin_unlock_irqrestore(&dev->request_lock, flags); |
fceaf24a | 253 | |
0120ee0d | 254 | if (found) { |
a388eb17 | 255 | if (resp->msg_len <= sizeof(struct rndis_message)) { |
c2a4efdd | 256 | memcpy(&request->response_msg, resp, |
a388eb17 | 257 | resp->msg_len); |
0120ee0d | 258 | } else { |
d9871158 | 259 | netdev_err(ndev, |
eb335bc4 HJ |
260 | "rndis response buffer overflow " |
261 | "detected (size %u max %zu)\n", | |
262 | resp->msg_len, | |
263 | sizeof(struct rndis_filter_packet)); | |
0120ee0d | 264 | |
a388eb17 | 265 | if (resp->ndis_msg_type == |
0120ee0d GKH |
266 | REMOTE_NDIS_RESET_CMPLT) { |
267 | /* does not have a request id field */ | |
a388eb17 HZ |
268 | request->response_msg.msg.reset_complete. |
269 | status = STATUS_BUFFER_OVERFLOW; | |
0120ee0d | 270 | } else { |
a388eb17 HZ |
271 | request->response_msg.msg. |
272 | init_complete.status = | |
c2a4efdd | 273 | STATUS_BUFFER_OVERFLOW; |
fceaf24a HJ |
274 | } |
275 | } | |
276 | ||
98d79690 | 277 | complete(&request->wait_event); |
0120ee0d | 278 | } else { |
d9871158 | 279 | netdev_err(ndev, |
eb335bc4 HJ |
280 | "no rndis request found for this response " |
281 | "(id 0x%x res type 0x%x)\n", | |
282 | resp->msg.init_complete.req_id, | |
283 | resp->ndis_msg_type); | |
fceaf24a | 284 | } |
fceaf24a HJ |
285 | } |
286 | ||
9c26aa0d | 287 | static void rndis_filter_receive_indicate_status(struct rndis_device *dev, |
c2a4efdd | 288 | struct rndis_message *resp) |
fceaf24a | 289 | { |
0120ee0d | 290 | struct rndis_indicate_status *indicate = |
a388eb17 | 291 | &resp->msg.indicate_status; |
fceaf24a | 292 | |
a388eb17 | 293 | if (indicate->status == RNDIS_STATUS_MEDIA_CONNECT) { |
39fb6aab | 294 | netvsc_linkstatus_callback( |
53d21fdb | 295 | dev->net_dev->dev, 1); |
a388eb17 | 296 | } else if (indicate->status == RNDIS_STATUS_MEDIA_DISCONNECT) { |
39fb6aab | 297 | netvsc_linkstatus_callback( |
53d21fdb | 298 | dev->net_dev->dev, 0); |
0120ee0d GKH |
299 | } else { |
300 | /* | |
301 | * TODO: | |
302 | */ | |
fceaf24a HJ |
303 | } |
304 | } | |
305 | ||
9c26aa0d | 306 | static void rndis_filter_receive_data(struct rndis_device *dev, |
c2a4efdd HZ |
307 | struct rndis_message *msg, |
308 | struct hv_netvsc_packet *pkt) | |
fceaf24a | 309 | { |
c2a4efdd HZ |
310 | struct rndis_packet *rndis_pkt; |
311 | u32 data_offset; | |
fceaf24a | 312 | |
a388eb17 | 313 | rndis_pkt = &msg->msg.pkt; |
fceaf24a | 314 | |
0120ee0d GKH |
315 | /* |
316 | * FIXME: Handle multiple rndis pkt msgs that maybe enclosed in this | |
317 | * netvsc packet (ie TotalDataBufferLength != MessageLength) | |
318 | */ | |
fceaf24a | 319 | |
454f18a9 | 320 | /* Remove the rndis header and pass it back up the stack */ |
a388eb17 | 321 | data_offset = RNDIS_HEADER_SIZE + rndis_pkt->data_offset; |
fceaf24a | 322 | |
72a2f5bd | 323 | pkt->total_data_buflen -= data_offset; |
45326342 | 324 | pkt->data = (void *)((unsigned long)pkt->data + data_offset); |
669c1fc6 | 325 | |
72a2f5bd | 326 | pkt->is_data_pkt = true; |
fceaf24a | 327 | |
a25e1dbe | 328 | netvsc_recv_callback(dev->net_dev->dev, pkt); |
fceaf24a HJ |
329 | } |
330 | ||
5fcc4115 | 331 | int rndis_filter_receive(struct hv_device *dev, |
c2a4efdd | 332 | struct hv_netvsc_packet *pkt) |
fceaf24a | 333 | { |
2ddd5e5f | 334 | struct netvsc_device *net_dev = hv_get_drvdata(dev); |
c2a4efdd HZ |
335 | struct rndis_device *rndis_dev; |
336 | struct rndis_message rndis_msg; | |
337 | struct rndis_message *rndis_hdr; | |
2ddd5e5f S |
338 | struct net_device *ndev; |
339 | ||
c2a4efdd | 340 | if (!net_dev) |
8a62d716 BP |
341 | return -EINVAL; |
342 | ||
715a4801 S |
343 | ndev = net_dev->ndev; |
344 | ||
454f18a9 | 345 | /* Make sure the rndis device state is initialized */ |
53d21fdb | 346 | if (!net_dev->extension) { |
d9871158 | 347 | netdev_err(ndev, "got rndis message but no rndis device - " |
eb335bc4 | 348 | "dropping this message!\n"); |
62c0743e | 349 | return -ENODEV; |
fceaf24a HJ |
350 | } |
351 | ||
53d21fdb | 352 | rndis_dev = (struct rndis_device *)net_dev->extension; |
c2a4efdd | 353 | if (rndis_dev->state == RNDIS_DEV_UNINITIALIZED) { |
d9871158 | 354 | netdev_err(ndev, "got rndis message but rndis device " |
eb335bc4 | 355 | "uninitialized...dropping this message!\n"); |
62c0743e | 356 | return -ENODEV; |
fceaf24a HJ |
357 | } |
358 | ||
45326342 | 359 | rndis_hdr = pkt->data; |
fceaf24a | 360 | |
454f18a9 | 361 | /* Make sure we got a valid rndis message */ |
a388eb17 HZ |
362 | if ((rndis_hdr->ndis_msg_type != REMOTE_NDIS_PACKET_MSG) && |
363 | (rndis_hdr->msg_len > sizeof(struct rndis_message))) { | |
d9871158 | 364 | netdev_err(ndev, "incoming rndis message buffer overflow " |
eb335bc4 | 365 | "detected (got %u, max %zu)..marking it an error!\n", |
a388eb17 | 366 | rndis_hdr->msg_len, |
0120ee0d | 367 | sizeof(struct rndis_message)); |
fceaf24a HJ |
368 | } |
369 | ||
c2a4efdd | 370 | memcpy(&rndis_msg, rndis_hdr, |
a388eb17 | 371 | (rndis_hdr->msg_len > sizeof(struct rndis_message)) ? |
0120ee0d | 372 | sizeof(struct rndis_message) : |
a388eb17 | 373 | rndis_hdr->msg_len); |
fceaf24a | 374 | |
729a2849 | 375 | dump_rndis_message(dev, &rndis_msg); |
fceaf24a | 376 | |
a388eb17 | 377 | switch (rndis_msg.ndis_msg_type) { |
fceaf24a | 378 | case REMOTE_NDIS_PACKET_MSG: |
0120ee0d | 379 | /* data msg */ |
9c26aa0d | 380 | rndis_filter_receive_data(rndis_dev, &rndis_msg, pkt); |
fceaf24a HJ |
381 | break; |
382 | ||
fceaf24a HJ |
383 | case REMOTE_NDIS_INITIALIZE_CMPLT: |
384 | case REMOTE_NDIS_QUERY_CMPLT: | |
385 | case REMOTE_NDIS_SET_CMPLT: | |
0120ee0d | 386 | /* completion msgs */ |
9c26aa0d | 387 | rndis_filter_receive_response(rndis_dev, &rndis_msg); |
fceaf24a HJ |
388 | break; |
389 | ||
fceaf24a | 390 | case REMOTE_NDIS_INDICATE_STATUS_MSG: |
0120ee0d | 391 | /* notification msgs */ |
9c26aa0d | 392 | rndis_filter_receive_indicate_status(rndis_dev, &rndis_msg); |
fceaf24a HJ |
393 | break; |
394 | default: | |
d9871158 | 395 | netdev_err(ndev, |
eb335bc4 | 396 | "unhandled rndis message (type %u len %u)\n", |
a388eb17 HZ |
397 | rndis_msg.ndis_msg_type, |
398 | rndis_msg.msg_len); | |
fceaf24a HJ |
399 | break; |
400 | } | |
401 | ||
fceaf24a HJ |
402 | return 0; |
403 | } | |
404 | ||
9c26aa0d | 405 | static int rndis_filter_query_device(struct rndis_device *dev, u32 oid, |
c2a4efdd | 406 | void *result, u32 *result_size) |
fceaf24a | 407 | { |
e681b954 | 408 | struct rndis_request *request; |
c2a4efdd | 409 | u32 inresult_size = *result_size; |
9f33d054 | 410 | struct rndis_query_request *query; |
c2a4efdd | 411 | struct rndis_query_complete *query_complete; |
0120ee0d | 412 | int ret = 0; |
98d79690 | 413 | int t; |
fceaf24a | 414 | |
c2a4efdd | 415 | if (!result) |
8a62d716 | 416 | return -EINVAL; |
fceaf24a | 417 | |
c2a4efdd | 418 | *result_size = 0; |
9c26aa0d | 419 | request = get_rndis_request(dev, REMOTE_NDIS_QUERY_MSG, |
0120ee0d GKH |
420 | RNDIS_MESSAGE_SIZE(struct rndis_query_request)); |
421 | if (!request) { | |
de6e0580 | 422 | ret = -ENOMEM; |
1c627870 | 423 | goto cleanup; |
fceaf24a HJ |
424 | } |
425 | ||
454f18a9 | 426 | /* Setup the rndis query */ |
a388eb17 HZ |
427 | query = &request->request_msg.msg.query_req; |
428 | query->oid = oid; | |
429 | query->info_buf_offset = sizeof(struct rndis_query_request); | |
430 | query->info_buflen = 0; | |
431 | query->dev_vc_handle = 0; | |
fceaf24a | 432 | |
9c26aa0d | 433 | ret = rndis_filter_send_request(dev, request); |
fceaf24a | 434 | if (ret != 0) |
1c627870 | 435 | goto cleanup; |
fceaf24a | 436 | |
5c5781b3 | 437 | t = wait_for_completion_timeout(&request->wait_event, 5*HZ); |
98d79690 | 438 | if (t == 0) { |
0c3b7b2f | 439 | ret = -ETIMEDOUT; |
1c627870 | 440 | goto cleanup; |
0c3b7b2f | 441 | } |
fceaf24a | 442 | |
454f18a9 | 443 | /* Copy the response back */ |
a388eb17 | 444 | query_complete = &request->response_msg.msg.query_complete; |
fceaf24a | 445 | |
a388eb17 | 446 | if (query_complete->info_buflen > inresult_size) { |
fceaf24a | 447 | ret = -1; |
1c627870 | 448 | goto cleanup; |
fceaf24a HJ |
449 | } |
450 | ||
c2a4efdd HZ |
451 | memcpy(result, |
452 | (void *)((unsigned long)query_complete + | |
a388eb17 HZ |
453 | query_complete->info_buf_offset), |
454 | query_complete->info_buflen); | |
fceaf24a | 455 | |
a388eb17 | 456 | *result_size = query_complete->info_buflen; |
fceaf24a | 457 | |
1c627870 | 458 | cleanup: |
fceaf24a | 459 | if (request) |
9c26aa0d | 460 | put_rndis_request(dev, request); |
fceaf24a HJ |
461 | |
462 | return ret; | |
463 | } | |
464 | ||
9c26aa0d | 465 | static int rndis_filter_query_device_mac(struct rndis_device *dev) |
fceaf24a | 466 | { |
9f8bd8ba | 467 | u32 size = ETH_ALEN; |
fceaf24a | 468 | |
9c26aa0d | 469 | return rndis_filter_query_device(dev, |
0120ee0d | 470 | RNDIS_OID_802_3_PERMANENT_ADDRESS, |
c2a4efdd | 471 | dev->hw_mac_adr, &size); |
fceaf24a HJ |
472 | } |
473 | ||
9c26aa0d | 474 | static int rndis_filter_query_device_link_status(struct rndis_device *dev) |
fceaf24a | 475 | { |
0120ee0d | 476 | u32 size = sizeof(u32); |
6f27457b S |
477 | u32 link_status; |
478 | int ret; | |
fceaf24a | 479 | |
6f27457b | 480 | ret = rndis_filter_query_device(dev, |
0120ee0d | 481 | RNDIS_OID_GEN_MEDIA_CONNECT_STATUS, |
6f27457b S |
482 | &link_status, &size); |
483 | dev->link_state = (link_status != 0) ? true : false; | |
484 | ||
485 | return ret; | |
fceaf24a HJ |
486 | } |
487 | ||
d426b2e3 | 488 | int rndis_filter_set_packet_filter(struct rndis_device *dev, u32 new_filter) |
fceaf24a | 489 | { |
e681b954 | 490 | struct rndis_request *request; |
9f33d054 | 491 | struct rndis_set_request *set; |
c2a4efdd | 492 | struct rndis_set_complete *set_complete; |
4d643114 | 493 | u32 status; |
98d79690 | 494 | int ret, t; |
2ddd5e5f S |
495 | struct net_device *ndev; |
496 | ||
497 | ndev = dev->net_dev->ndev; | |
fceaf24a | 498 | |
9c26aa0d | 499 | request = get_rndis_request(dev, REMOTE_NDIS_SET_MSG, |
0120ee0d GKH |
500 | RNDIS_MESSAGE_SIZE(struct rndis_set_request) + |
501 | sizeof(u32)); | |
502 | if (!request) { | |
58ef3977 | 503 | ret = -ENOMEM; |
1c627870 | 504 | goto cleanup; |
fceaf24a HJ |
505 | } |
506 | ||
454f18a9 | 507 | /* Setup the rndis set */ |
a388eb17 HZ |
508 | set = &request->request_msg.msg.set_req; |
509 | set->oid = RNDIS_OID_GEN_CURRENT_PACKET_FILTER; | |
510 | set->info_buflen = sizeof(u32); | |
511 | set->info_buf_offset = sizeof(struct rndis_set_request); | |
fceaf24a | 512 | |
0120ee0d | 513 | memcpy((void *)(unsigned long)set + sizeof(struct rndis_set_request), |
c2a4efdd | 514 | &new_filter, sizeof(u32)); |
fceaf24a | 515 | |
9c26aa0d | 516 | ret = rndis_filter_send_request(dev, request); |
fceaf24a | 517 | if (ret != 0) |
1c627870 | 518 | goto cleanup; |
fceaf24a | 519 | |
5c5781b3 | 520 | t = wait_for_completion_timeout(&request->wait_event, 5*HZ); |
98d79690 S |
521 | |
522 | if (t == 0) { | |
d9871158 | 523 | netdev_err(ndev, |
eb335bc4 | 524 | "timeout before we got a set response...\n"); |
0120ee0d | 525 | /* |
25985edc | 526 | * We can't deallocate the request since we may still receive a |
0120ee0d GKH |
527 | * send completion for it. |
528 | */ | |
5585d81e | 529 | goto exit; |
0120ee0d | 530 | } else { |
a388eb17 HZ |
531 | set_complete = &request->response_msg.msg.set_complete; |
532 | status = set_complete->status; | |
fceaf24a HJ |
533 | } |
534 | ||
1c627870 | 535 | cleanup: |
fceaf24a | 536 | if (request) |
9c26aa0d | 537 | put_rndis_request(dev, request); |
5585d81e | 538 | exit: |
fceaf24a HJ |
539 | return ret; |
540 | } | |
541 | ||
fceaf24a | 542 | |
9c26aa0d | 543 | static int rndis_filter_init_device(struct rndis_device *dev) |
fceaf24a | 544 | { |
e681b954 | 545 | struct rndis_request *request; |
9f33d054 | 546 | struct rndis_initialize_request *init; |
c2a4efdd | 547 | struct rndis_initialize_complete *init_complete; |
4d643114 | 548 | u32 status; |
98d79690 | 549 | int ret, t; |
fceaf24a | 550 | |
9c26aa0d | 551 | request = get_rndis_request(dev, REMOTE_NDIS_INITIALIZE_MSG, |
0120ee0d GKH |
552 | RNDIS_MESSAGE_SIZE(struct rndis_initialize_request)); |
553 | if (!request) { | |
bc49b926 | 554 | ret = -ENOMEM; |
1c627870 | 555 | goto cleanup; |
fceaf24a HJ |
556 | } |
557 | ||
454f18a9 | 558 | /* Setup the rndis set */ |
a388eb17 HZ |
559 | init = &request->request_msg.msg.init_req; |
560 | init->major_ver = RNDIS_MAJOR_VERSION; | |
561 | init->minor_ver = RNDIS_MINOR_VERSION; | |
0120ee0d | 562 | /* FIXME: Use 1536 - rounded ethernet frame size */ |
a388eb17 | 563 | init->max_xfer_size = 2048; |
fceaf24a | 564 | |
c2a4efdd | 565 | dev->state = RNDIS_DEV_INITIALIZING; |
fceaf24a | 566 | |
9c26aa0d | 567 | ret = rndis_filter_send_request(dev, request); |
0120ee0d | 568 | if (ret != 0) { |
c2a4efdd | 569 | dev->state = RNDIS_DEV_UNINITIALIZED; |
1c627870 | 570 | goto cleanup; |
fceaf24a HJ |
571 | } |
572 | ||
0c3b7b2f | 573 | |
5c5781b3 | 574 | t = wait_for_completion_timeout(&request->wait_event, 5*HZ); |
98d79690 S |
575 | |
576 | if (t == 0) { | |
0c3b7b2f | 577 | ret = -ETIMEDOUT; |
1c627870 | 578 | goto cleanup; |
0c3b7b2f | 579 | } |
fceaf24a | 580 | |
a388eb17 HZ |
581 | init_complete = &request->response_msg.msg.init_complete; |
582 | status = init_complete->status; | |
0120ee0d | 583 | if (status == RNDIS_STATUS_SUCCESS) { |
c2a4efdd | 584 | dev->state = RNDIS_DEV_INITIALIZED; |
fceaf24a | 585 | ret = 0; |
0120ee0d | 586 | } else { |
c2a4efdd | 587 | dev->state = RNDIS_DEV_UNINITIALIZED; |
bc49b926 | 588 | ret = -EINVAL; |
fceaf24a HJ |
589 | } |
590 | ||
1c627870 | 591 | cleanup: |
fceaf24a | 592 | if (request) |
9c26aa0d | 593 | put_rndis_request(dev, request); |
fceaf24a HJ |
594 | |
595 | return ret; | |
596 | } | |
597 | ||
9c26aa0d | 598 | static void rndis_filter_halt_device(struct rndis_device *dev) |
fceaf24a | 599 | { |
e681b954 | 600 | struct rndis_request *request; |
9f33d054 | 601 | struct rndis_halt_request *halt; |
fceaf24a | 602 | |
454f18a9 | 603 | /* Attempt to do a rndis device halt */ |
9c26aa0d | 604 | request = get_rndis_request(dev, REMOTE_NDIS_HALT_MSG, |
0120ee0d | 605 | RNDIS_MESSAGE_SIZE(struct rndis_halt_request)); |
fceaf24a | 606 | if (!request) |
1c627870 | 607 | goto cleanup; |
fceaf24a | 608 | |
454f18a9 | 609 | /* Setup the rndis set */ |
a388eb17 HZ |
610 | halt = &request->request_msg.msg.halt_req; |
611 | halt->req_id = atomic_inc_return(&dev->new_req_id); | |
fceaf24a | 612 | |
454f18a9 | 613 | /* Ignore return since this msg is optional. */ |
9c26aa0d | 614 | rndis_filter_send_request(dev, request); |
fceaf24a | 615 | |
c2a4efdd | 616 | dev->state = RNDIS_DEV_UNINITIALIZED; |
fceaf24a | 617 | |
1c627870 | 618 | cleanup: |
fceaf24a | 619 | if (request) |
9c26aa0d | 620 | put_rndis_request(dev, request); |
fceaf24a HJ |
621 | return; |
622 | } | |
623 | ||
9c26aa0d | 624 | static int rndis_filter_open_device(struct rndis_device *dev) |
fceaf24a | 625 | { |
0120ee0d | 626 | int ret; |
fceaf24a | 627 | |
c2a4efdd | 628 | if (dev->state != RNDIS_DEV_INITIALIZED) |
fceaf24a HJ |
629 | return 0; |
630 | ||
9c26aa0d | 631 | ret = rndis_filter_set_packet_filter(dev, |
0120ee0d | 632 | NDIS_PACKET_TYPE_BROADCAST | |
95beae90 | 633 | NDIS_PACKET_TYPE_ALL_MULTICAST | |
0120ee0d | 634 | NDIS_PACKET_TYPE_DIRECTED); |
fceaf24a | 635 | if (ret == 0) |
c2a4efdd | 636 | dev->state = RNDIS_DEV_DATAINITIALIZED; |
fceaf24a | 637 | |
fceaf24a HJ |
638 | return ret; |
639 | } | |
640 | ||
9c26aa0d | 641 | static int rndis_filter_close_device(struct rndis_device *dev) |
fceaf24a HJ |
642 | { |
643 | int ret; | |
644 | ||
c2a4efdd | 645 | if (dev->state != RNDIS_DEV_DATAINITIALIZED) |
fceaf24a HJ |
646 | return 0; |
647 | ||
9c26aa0d | 648 | ret = rndis_filter_set_packet_filter(dev, 0); |
fceaf24a | 649 | if (ret == 0) |
c2a4efdd | 650 | dev->state = RNDIS_DEV_INITIALIZED; |
fceaf24a | 651 | |
fceaf24a HJ |
652 | return ret; |
653 | } | |
654 | ||
bdbad576 | 655 | int rndis_filter_device_add(struct hv_device *dev, |
c2a4efdd | 656 | void *additional_info) |
fceaf24a HJ |
657 | { |
658 | int ret; | |
86c921af | 659 | struct netvsc_device *net_device; |
b13cc345 | 660 | struct rndis_device *rndis_device; |
3c4debad | 661 | struct netvsc_device_info *device_info = additional_info; |
fceaf24a | 662 | |
b13cc345 S |
663 | rndis_device = get_rndis_device(); |
664 | if (!rndis_device) | |
327efbae | 665 | return -ENODEV; |
fceaf24a | 666 | |
0120ee0d GKH |
667 | /* |
668 | * Let the inner driver handle this first to create the netvsc channel | |
669 | * NOTE! Once the channel is created, we may get a receive callback | |
670 | * (RndisFilterOnReceive()) before this call is completed | |
671 | */ | |
ce5bf661 | 672 | ret = netvsc_device_add(dev, additional_info); |
0120ee0d | 673 | if (ret != 0) { |
b13cc345 | 674 | kfree(rndis_device); |
fceaf24a HJ |
675 | return ret; |
676 | } | |
677 | ||
454f18a9 BP |
678 | |
679 | /* Initialize the rndis device */ | |
86c921af | 680 | net_device = hv_get_drvdata(dev); |
fceaf24a | 681 | |
b13cc345 S |
682 | net_device->extension = rndis_device; |
683 | rndis_device->net_dev = net_device; | |
fceaf24a | 684 | |
454f18a9 | 685 | /* Send the rndis initialization message */ |
b13cc345 | 686 | ret = rndis_filter_init_device(rndis_device); |
0120ee0d GKH |
687 | if (ret != 0) { |
688 | /* | |
689 | * TODO: If rndis init failed, we will need to shut down the | |
690 | * channel | |
691 | */ | |
fceaf24a HJ |
692 | } |
693 | ||
454f18a9 | 694 | /* Get the mac address */ |
b13cc345 | 695 | ret = rndis_filter_query_device_mac(rndis_device); |
0120ee0d GKH |
696 | if (ret != 0) { |
697 | /* | |
698 | * TODO: shutdown rndis device and the channel | |
699 | */ | |
fceaf24a HJ |
700 | } |
701 | ||
3c4debad | 702 | memcpy(device_info->mac_adr, rndis_device->hw_mac_adr, ETH_ALEN); |
fceaf24a | 703 | |
b13cc345 | 704 | rndis_filter_query_device_link_status(rndis_device); |
fceaf24a | 705 | |
6f27457b | 706 | device_info->link_state = rndis_device->link_state; |
eb335bc4 | 707 | |
6f27457b | 708 | dev_info(&dev->device, "Device MAC %pM link state %s\n", |
b13cc345 | 709 | rndis_device->hw_mac_adr, |
6f27457b | 710 | device_info->link_state ? "down" : "up"); |
fceaf24a | 711 | |
fceaf24a HJ |
712 | return ret; |
713 | } | |
714 | ||
df06bcff | 715 | void rndis_filter_device_remove(struct hv_device *dev) |
fceaf24a | 716 | { |
2ddd5e5f | 717 | struct netvsc_device *net_dev = hv_get_drvdata(dev); |
53d21fdb | 718 | struct rndis_device *rndis_dev = net_dev->extension; |
fceaf24a | 719 | |
454f18a9 | 720 | /* Halt and release the rndis device */ |
9c26aa0d | 721 | rndis_filter_halt_device(rndis_dev); |
fceaf24a | 722 | |
c2a4efdd | 723 | kfree(rndis_dev); |
53d21fdb | 724 | net_dev->extension = NULL; |
fceaf24a | 725 | |
3fae5c8f | 726 | netvsc_device_remove(dev); |
fceaf24a HJ |
727 | } |
728 | ||
fceaf24a | 729 | |
9c26aa0d | 730 | int rndis_filter_open(struct hv_device *dev) |
fceaf24a | 731 | { |
86c921af | 732 | struct netvsc_device *net_device = hv_get_drvdata(dev); |
fceaf24a | 733 | |
86c921af | 734 | if (!net_device) |
8a62d716 BP |
735 | return -EINVAL; |
736 | ||
86c921af | 737 | return rndis_filter_open_device(net_device->extension); |
fceaf24a HJ |
738 | } |
739 | ||
9c26aa0d | 740 | int rndis_filter_close(struct hv_device *dev) |
fceaf24a | 741 | { |
2ddd5e5f | 742 | struct netvsc_device *netDevice = hv_get_drvdata(dev); |
fceaf24a | 743 | |
8a62d716 BP |
744 | if (!netDevice) |
745 | return -EINVAL; | |
746 | ||
53d21fdb | 747 | return rndis_filter_close_device(netDevice->extension); |
fceaf24a HJ |
748 | } |
749 | ||
0652aebc | 750 | int rndis_filter_send(struct hv_device *dev, |
c2a4efdd | 751 | struct hv_netvsc_packet *pkt) |
fceaf24a | 752 | { |
0120ee0d | 753 | int ret; |
e681b954 | 754 | struct rndis_filter_packet *filterPacket; |
9f33d054 GKH |
755 | struct rndis_message *rndisMessage; |
756 | struct rndis_packet *rndisPacket; | |
4d643114 | 757 | u32 rndisMessageSize; |
fceaf24a | 758 | |
454f18a9 | 759 | /* Add the rndis header */ |
72a2f5bd | 760 | filterPacket = (struct rndis_filter_packet *)pkt->extension; |
fceaf24a | 761 | |
e681b954 | 762 | memset(filterPacket, 0, sizeof(struct rndis_filter_packet)); |
fceaf24a | 763 | |
c2a4efdd | 764 | rndisMessage = &filterPacket->msg; |
9f33d054 | 765 | rndisMessageSize = RNDIS_MESSAGE_SIZE(struct rndis_packet); |
fceaf24a | 766 | |
a388eb17 HZ |
767 | rndisMessage->ndis_msg_type = REMOTE_NDIS_PACKET_MSG; |
768 | rndisMessage->msg_len = pkt->total_data_buflen + | |
0120ee0d | 769 | rndisMessageSize; |
fceaf24a | 770 | |
a388eb17 HZ |
771 | rndisPacket = &rndisMessage->msg.pkt; |
772 | rndisPacket->data_offset = sizeof(struct rndis_packet); | |
773 | rndisPacket->data_len = pkt->total_data_buflen; | |
fceaf24a | 774 | |
72a2f5bd | 775 | pkt->is_data_pkt = true; |
ca623ad3 HZ |
776 | pkt->page_buf[0].pfn = virt_to_phys(rndisMessage) >> PAGE_SHIFT; |
777 | pkt->page_buf[0].offset = | |
0120ee0d | 778 | (unsigned long)rndisMessage & (PAGE_SIZE-1); |
ca623ad3 | 779 | pkt->page_buf[0].len = rndisMessageSize; |
fceaf24a | 780 | |
454f18a9 | 781 | /* Save the packet send completion and context */ |
72a2f5bd | 782 | filterPacket->completion = pkt->completion.send.send_completion; |
c2a4efdd | 783 | filterPacket->completion_ctx = |
72a2f5bd | 784 | pkt->completion.send.send_completion_ctx; |
fceaf24a | 785 | |
454f18a9 | 786 | /* Use ours */ |
72a2f5bd HZ |
787 | pkt->completion.send.send_completion = rndis_filter_send_completion; |
788 | pkt->completion.send.send_completion_ctx = filterPacket; | |
fceaf24a | 789 | |
0ec6ff40 | 790 | ret = netvsc_send(dev, pkt); |
0120ee0d GKH |
791 | if (ret != 0) { |
792 | /* | |
793 | * Reset the completion to originals to allow retries from | |
794 | * above | |
795 | */ | |
72a2f5bd | 796 | pkt->completion.send.send_completion = |
c2a4efdd | 797 | filterPacket->completion; |
72a2f5bd | 798 | pkt->completion.send.send_completion_ctx = |
c2a4efdd | 799 | filterPacket->completion_ctx; |
fceaf24a HJ |
800 | } |
801 | ||
fceaf24a HJ |
802 | return ret; |
803 | } | |
804 | ||
9c26aa0d | 805 | static void rndis_filter_send_completion(void *ctx) |
fceaf24a | 806 | { |
c2a4efdd | 807 | struct rndis_filter_packet *filterPacket = ctx; |
fceaf24a | 808 | |
454f18a9 | 809 | /* Pass it back to the original handler */ |
c2a4efdd | 810 | filterPacket->completion(filterPacket->completion_ctx); |
fceaf24a HJ |
811 | } |
812 | ||
813 | ||
9c26aa0d | 814 | static void rndis_filter_send_request_completion(void *ctx) |
fceaf24a | 815 | { |
454f18a9 | 816 | /* Noop */ |
fceaf24a | 817 | } |