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 S |
29 | |
30 | #include "hyperv.h" | |
5ca7252a | 31 | #include "hyperv_net.h" |
fceaf24a | 32 | |
fceaf24a | 33 | |
e681b954 | 34 | enum rndis_device_state { |
fceaf24a HJ |
35 | RNDIS_DEV_UNINITIALIZED = 0, |
36 | RNDIS_DEV_INITIALIZING, | |
37 | RNDIS_DEV_INITIALIZED, | |
38 | RNDIS_DEV_DATAINITIALIZED, | |
e681b954 | 39 | }; |
fceaf24a | 40 | |
e681b954 | 41 | struct rndis_device { |
c2a4efdd | 42 | struct netvsc_device *net_dev; |
fceaf24a | 43 | |
c2a4efdd HZ |
44 | enum rndis_device_state state; |
45 | u32 link_stat; | |
46 | atomic_t new_req_id; | |
fceaf24a | 47 | |
880fb89c | 48 | spinlock_t request_lock; |
c2a4efdd | 49 | struct list_head req_list; |
fceaf24a | 50 | |
c2a4efdd | 51 | unsigned char hw_mac_adr[ETH_ALEN]; |
e681b954 | 52 | }; |
fceaf24a | 53 | |
e681b954 | 54 | struct rndis_request { |
c2a4efdd | 55 | struct list_head list_ent; |
98d79690 | 56 | struct completion wait_event; |
fceaf24a | 57 | |
0120ee0d GKH |
58 | /* |
59 | * FIXME: We assumed a fixed size response here. If we do ever need to | |
60 | * handle a bigger response, we can either define a max response | |
61 | * message or add a response buffer variable above this field | |
62 | */ | |
c2a4efdd | 63 | struct rndis_message response_msg; |
fceaf24a | 64 | |
454f18a9 | 65 | /* Simplify allocation by having a netvsc packet inline */ |
c2a4efdd HZ |
66 | struct hv_netvsc_packet pkt; |
67 | struct hv_page_buffer buf; | |
454f18a9 | 68 | /* FIXME: We assumed a fixed size request here. */ |
c2a4efdd | 69 | struct rndis_message request_msg; |
e681b954 | 70 | }; |
fceaf24a | 71 | |
9c26aa0d | 72 | static void rndis_filter_send_completion(void *ctx); |
0120ee0d | 73 | |
9c26aa0d | 74 | static void rndis_filter_send_request_completion(void *ctx); |
454f18a9 BP |
75 | |
76 | ||
fceaf24a | 77 | |
9c26aa0d | 78 | static struct rndis_device *get_rndis_device(void) |
fceaf24a | 79 | { |
e681b954 | 80 | struct rndis_device *device; |
fceaf24a | 81 | |
e681b954 | 82 | device = kzalloc(sizeof(struct rndis_device), GFP_KERNEL); |
fceaf24a | 83 | if (!device) |
fceaf24a | 84 | return NULL; |
fceaf24a | 85 | |
880fb89c | 86 | spin_lock_init(&device->request_lock); |
fceaf24a | 87 | |
c2a4efdd | 88 | INIT_LIST_HEAD(&device->req_list); |
fceaf24a | 89 | |
c2a4efdd | 90 | device->state = RNDIS_DEV_UNINITIALIZED; |
fceaf24a HJ |
91 | |
92 | return device; | |
93 | } | |
94 | ||
9c26aa0d | 95 | static struct rndis_request *get_rndis_request(struct rndis_device *dev, |
c2a4efdd HZ |
96 | u32 msg_type, |
97 | u32 msg_len) | |
fceaf24a | 98 | { |
e681b954 | 99 | struct rndis_request *request; |
c2a4efdd | 100 | struct rndis_message *rndis_msg; |
9f33d054 | 101 | struct rndis_set_request *set; |
880fb89c | 102 | unsigned long flags; |
fceaf24a | 103 | |
e681b954 | 104 | request = kzalloc(sizeof(struct rndis_request), GFP_KERNEL); |
fceaf24a | 105 | if (!request) |
fceaf24a | 106 | return NULL; |
fceaf24a | 107 | |
98d79690 | 108 | init_completion(&request->wait_event); |
fceaf24a | 109 | |
c2a4efdd | 110 | rndis_msg = &request->request_msg; |
a388eb17 HZ |
111 | rndis_msg->ndis_msg_type = msg_type; |
112 | rndis_msg->msg_len = msg_len; | |
fceaf24a | 113 | |
0120ee0d GKH |
114 | /* |
115 | * Set the request id. This field is always after the rndis header for | |
116 | * request/response packet types so we just used the SetRequest as a | |
117 | * template | |
118 | */ | |
a388eb17 HZ |
119 | set = &rndis_msg->msg.set_req; |
120 | set->req_id = atomic_inc_return(&dev->new_req_id); | |
fceaf24a | 121 | |
454f18a9 | 122 | /* Add to the request list */ |
c2a4efdd HZ |
123 | spin_lock_irqsave(&dev->request_lock, flags); |
124 | list_add_tail(&request->list_ent, &dev->req_list); | |
125 | spin_unlock_irqrestore(&dev->request_lock, flags); | |
fceaf24a HJ |
126 | |
127 | return request; | |
128 | } | |
129 | ||
9c26aa0d | 130 | static void put_rndis_request(struct rndis_device *dev, |
c2a4efdd | 131 | struct rndis_request *req) |
fceaf24a | 132 | { |
880fb89c GKH |
133 | unsigned long flags; |
134 | ||
c2a4efdd HZ |
135 | spin_lock_irqsave(&dev->request_lock, flags); |
136 | list_del(&req->list_ent); | |
137 | spin_unlock_irqrestore(&dev->request_lock, flags); | |
fceaf24a | 138 | |
c2a4efdd | 139 | kfree(req); |
fceaf24a HJ |
140 | } |
141 | ||
9c26aa0d | 142 | static void dump_rndis_message(struct rndis_message *rndis_msg) |
fceaf24a | 143 | { |
a388eb17 | 144 | switch (rndis_msg->ndis_msg_type) { |
fceaf24a | 145 | case REMOTE_NDIS_PACKET_MSG: |
0120ee0d GKH |
146 | DPRINT_DBG(NETVSC, "REMOTE_NDIS_PACKET_MSG (len %u, " |
147 | "data offset %u data len %u, # oob %u, " | |
148 | "oob offset %u, oob len %u, pkt offset %u, " | |
149 | "pkt len %u", | |
a388eb17 HZ |
150 | rndis_msg->msg_len, |
151 | rndis_msg->msg.pkt.data_offset, | |
152 | rndis_msg->msg.pkt.data_len, | |
153 | rndis_msg->msg.pkt.num_oob_data_elements, | |
154 | rndis_msg->msg.pkt.oob_data_offset, | |
155 | rndis_msg->msg.pkt.oob_data_len, | |
156 | rndis_msg->msg.pkt.per_pkt_info_offset, | |
157 | rndis_msg->msg.pkt.per_pkt_info_len); | |
fceaf24a HJ |
158 | break; |
159 | ||
160 | case REMOTE_NDIS_INITIALIZE_CMPLT: | |
0120ee0d GKH |
161 | DPRINT_DBG(NETVSC, "REMOTE_NDIS_INITIALIZE_CMPLT " |
162 | "(len %u, id 0x%x, status 0x%x, major %d, minor %d, " | |
163 | "device flags %d, max xfer size 0x%x, max pkts %u, " | |
164 | "pkt aligned %u)", | |
a388eb17 HZ |
165 | rndis_msg->msg_len, |
166 | rndis_msg->msg.init_complete.req_id, | |
167 | rndis_msg->msg.init_complete.status, | |
168 | rndis_msg->msg.init_complete.major_ver, | |
169 | rndis_msg->msg.init_complete.minor_ver, | |
170 | rndis_msg->msg.init_complete.dev_flags, | |
171 | rndis_msg->msg.init_complete.max_xfer_size, | |
172 | rndis_msg->msg.init_complete. | |
173 | max_pkt_per_msg, | |
174 | rndis_msg->msg.init_complete. | |
175 | pkt_alignment_factor); | |
fceaf24a HJ |
176 | break; |
177 | ||
178 | case REMOTE_NDIS_QUERY_CMPLT: | |
0120ee0d GKH |
179 | DPRINT_DBG(NETVSC, "REMOTE_NDIS_QUERY_CMPLT " |
180 | "(len %u, id 0x%x, status 0x%x, buf len %u, " | |
181 | "buf offset %u)", | |
a388eb17 HZ |
182 | rndis_msg->msg_len, |
183 | rndis_msg->msg.query_complete.req_id, | |
184 | rndis_msg->msg.query_complete.status, | |
185 | rndis_msg->msg.query_complete. | |
186 | info_buflen, | |
187 | rndis_msg->msg.query_complete. | |
188 | info_buf_offset); | |
fceaf24a HJ |
189 | break; |
190 | ||
191 | case REMOTE_NDIS_SET_CMPLT: | |
0120ee0d GKH |
192 | DPRINT_DBG(NETVSC, |
193 | "REMOTE_NDIS_SET_CMPLT (len %u, id 0x%x, status 0x%x)", | |
a388eb17 HZ |
194 | rndis_msg->msg_len, |
195 | rndis_msg->msg.set_complete.req_id, | |
196 | rndis_msg->msg.set_complete.status); | |
fceaf24a HJ |
197 | break; |
198 | ||
199 | case REMOTE_NDIS_INDICATE_STATUS_MSG: | |
0120ee0d GKH |
200 | DPRINT_DBG(NETVSC, "REMOTE_NDIS_INDICATE_STATUS_MSG " |
201 | "(len %u, status 0x%x, buf len %u, buf offset %u)", | |
a388eb17 HZ |
202 | rndis_msg->msg_len, |
203 | rndis_msg->msg.indicate_status.status, | |
204 | rndis_msg->msg.indicate_status.status_buflen, | |
205 | rndis_msg->msg.indicate_status.status_buf_offset); | |
fceaf24a HJ |
206 | break; |
207 | ||
208 | default: | |
209 | DPRINT_DBG(NETVSC, "0x%x (len %u)", | |
a388eb17 HZ |
210 | rndis_msg->ndis_msg_type, |
211 | rndis_msg->msg_len); | |
fceaf24a HJ |
212 | break; |
213 | } | |
214 | } | |
215 | ||
9c26aa0d | 216 | static int rndis_filter_send_request(struct rndis_device *dev, |
c2a4efdd | 217 | struct rndis_request *req) |
fceaf24a | 218 | { |
0120ee0d | 219 | int ret; |
4193d4f4 | 220 | struct hv_netvsc_packet *packet; |
fceaf24a | 221 | |
454f18a9 | 222 | /* Setup the packet to send it */ |
c2a4efdd | 223 | packet = &req->pkt; |
fceaf24a | 224 | |
72a2f5bd | 225 | packet->is_data_pkt = false; |
a388eb17 | 226 | packet->total_data_buflen = req->request_msg.msg_len; |
72a2f5bd | 227 | packet->page_buf_cnt = 1; |
fceaf24a | 228 | |
ca623ad3 | 229 | packet->page_buf[0].pfn = virt_to_phys(&req->request_msg) >> |
0120ee0d | 230 | PAGE_SHIFT; |
ca623ad3 HZ |
231 | packet->page_buf[0].len = req->request_msg.msg_len; |
232 | packet->page_buf[0].offset = | |
c2a4efdd | 233 | (unsigned long)&req->request_msg & (PAGE_SIZE - 1); |
fceaf24a | 234 | |
72a2f5bd HZ |
235 | packet->completion.send.send_completion_ctx = req;/* packet; */ |
236 | packet->completion.send.send_completion = | |
9c26aa0d | 237 | rndis_filter_send_request_completion; |
72a2f5bd | 238 | packet->completion.send.send_completion_tid = (unsigned long)dev; |
fceaf24a | 239 | |
0ec6ff40 | 240 | ret = netvsc_send(dev->net_dev->dev, packet); |
fceaf24a HJ |
241 | return ret; |
242 | } | |
243 | ||
9c26aa0d | 244 | static void rndis_filter_receive_response(struct rndis_device *dev, |
c2a4efdd | 245 | struct rndis_message *resp) |
fceaf24a | 246 | { |
e681b954 | 247 | struct rndis_request *request = NULL; |
0e727613 | 248 | bool found = false; |
880fb89c | 249 | unsigned long flags; |
fceaf24a | 250 | |
c2a4efdd HZ |
251 | spin_lock_irqsave(&dev->request_lock, flags); |
252 | list_for_each_entry(request, &dev->req_list, list_ent) { | |
0120ee0d GKH |
253 | /* |
254 | * All request/response message contains RequestId as the 1st | |
255 | * field | |
256 | */ | |
a388eb17 HZ |
257 | if (request->request_msg.msg.init_req.req_id |
258 | == resp->msg.init_complete.req_id) { | |
0e727613 | 259 | found = true; |
fceaf24a HJ |
260 | break; |
261 | } | |
262 | } | |
c2a4efdd | 263 | spin_unlock_irqrestore(&dev->request_lock, flags); |
fceaf24a | 264 | |
0120ee0d | 265 | if (found) { |
a388eb17 | 266 | if (resp->msg_len <= sizeof(struct rndis_message)) { |
c2a4efdd | 267 | memcpy(&request->response_msg, resp, |
a388eb17 | 268 | resp->msg_len); |
0120ee0d | 269 | } else { |
eb335bc4 HJ |
270 | dev_err(&dev->net_dev->dev->device, |
271 | "rndis response buffer overflow " | |
272 | "detected (size %u max %zu)\n", | |
273 | resp->msg_len, | |
274 | sizeof(struct rndis_filter_packet)); | |
0120ee0d | 275 | |
a388eb17 | 276 | if (resp->ndis_msg_type == |
0120ee0d GKH |
277 | REMOTE_NDIS_RESET_CMPLT) { |
278 | /* does not have a request id field */ | |
a388eb17 HZ |
279 | request->response_msg.msg.reset_complete. |
280 | status = STATUS_BUFFER_OVERFLOW; | |
0120ee0d | 281 | } else { |
a388eb17 HZ |
282 | request->response_msg.msg. |
283 | init_complete.status = | |
c2a4efdd | 284 | STATUS_BUFFER_OVERFLOW; |
fceaf24a HJ |
285 | } |
286 | } | |
287 | ||
98d79690 | 288 | complete(&request->wait_event); |
0120ee0d | 289 | } else { |
eb335bc4 HJ |
290 | dev_err(&dev->net_dev->dev->device, |
291 | "no rndis request found for this response " | |
292 | "(id 0x%x res type 0x%x)\n", | |
293 | resp->msg.init_complete.req_id, | |
294 | resp->ndis_msg_type); | |
fceaf24a | 295 | } |
fceaf24a HJ |
296 | } |
297 | ||
9c26aa0d | 298 | static void rndis_filter_receive_indicate_status(struct rndis_device *dev, |
c2a4efdd | 299 | struct rndis_message *resp) |
fceaf24a | 300 | { |
0120ee0d | 301 | struct rndis_indicate_status *indicate = |
a388eb17 | 302 | &resp->msg.indicate_status; |
fceaf24a | 303 | |
a388eb17 | 304 | if (indicate->status == RNDIS_STATUS_MEDIA_CONNECT) { |
39fb6aab | 305 | netvsc_linkstatus_callback( |
53d21fdb | 306 | dev->net_dev->dev, 1); |
a388eb17 | 307 | } else if (indicate->status == RNDIS_STATUS_MEDIA_DISCONNECT) { |
39fb6aab | 308 | netvsc_linkstatus_callback( |
53d21fdb | 309 | dev->net_dev->dev, 0); |
0120ee0d GKH |
310 | } else { |
311 | /* | |
312 | * TODO: | |
313 | */ | |
fceaf24a HJ |
314 | } |
315 | } | |
316 | ||
9c26aa0d | 317 | static void rndis_filter_receive_data(struct rndis_device *dev, |
c2a4efdd HZ |
318 | struct rndis_message *msg, |
319 | struct hv_netvsc_packet *pkt) | |
fceaf24a | 320 | { |
c2a4efdd HZ |
321 | struct rndis_packet *rndis_pkt; |
322 | u32 data_offset; | |
fceaf24a | 323 | |
a388eb17 | 324 | rndis_pkt = &msg->msg.pkt; |
fceaf24a | 325 | |
0120ee0d GKH |
326 | /* |
327 | * FIXME: Handle multiple rndis pkt msgs that maybe enclosed in this | |
328 | * netvsc packet (ie TotalDataBufferLength != MessageLength) | |
329 | */ | |
fceaf24a | 330 | |
454f18a9 | 331 | /* Remove the rndis header and pass it back up the stack */ |
a388eb17 | 332 | data_offset = RNDIS_HEADER_SIZE + rndis_pkt->data_offset; |
fceaf24a | 333 | |
72a2f5bd | 334 | pkt->total_data_buflen -= data_offset; |
ca623ad3 HZ |
335 | pkt->page_buf[0].offset += data_offset; |
336 | pkt->page_buf[0].len -= data_offset; | |
fceaf24a | 337 | |
72a2f5bd | 338 | pkt->is_data_pkt = true; |
fceaf24a | 339 | |
a25e1dbe | 340 | netvsc_recv_callback(dev->net_dev->dev, pkt); |
fceaf24a HJ |
341 | } |
342 | ||
5fcc4115 | 343 | int rndis_filter_receive(struct hv_device *dev, |
c2a4efdd | 344 | struct hv_netvsc_packet *pkt) |
fceaf24a | 345 | { |
ca623ad3 | 346 | struct netvsc_device *net_dev = dev->ext; |
c2a4efdd HZ |
347 | struct rndis_device *rndis_dev; |
348 | struct rndis_message rndis_msg; | |
349 | struct rndis_message *rndis_hdr; | |
fceaf24a | 350 | |
c2a4efdd | 351 | if (!net_dev) |
8a62d716 BP |
352 | return -EINVAL; |
353 | ||
454f18a9 | 354 | /* Make sure the rndis device state is initialized */ |
53d21fdb | 355 | if (!net_dev->extension) { |
eb335bc4 HJ |
356 | dev_err(&dev->device, "got rndis message but no rndis device - " |
357 | "dropping this message!\n"); | |
fceaf24a HJ |
358 | return -1; |
359 | } | |
360 | ||
53d21fdb | 361 | rndis_dev = (struct rndis_device *)net_dev->extension; |
c2a4efdd | 362 | if (rndis_dev->state == RNDIS_DEV_UNINITIALIZED) { |
eb335bc4 HJ |
363 | dev_err(&dev->device, "got rndis message but rndis device " |
364 | "uninitialized...dropping this message!\n"); | |
fceaf24a HJ |
365 | return -1; |
366 | } | |
367 | ||
c2a4efdd | 368 | rndis_hdr = (struct rndis_message *)kmap_atomic( |
ca623ad3 | 369 | pfn_to_page(pkt->page_buf[0].pfn), KM_IRQ0); |
fceaf24a | 370 | |
c2a4efdd | 371 | rndis_hdr = (void *)((unsigned long)rndis_hdr + |
ca623ad3 | 372 | pkt->page_buf[0].offset); |
fceaf24a | 373 | |
454f18a9 | 374 | /* Make sure we got a valid rndis message */ |
0120ee0d GKH |
375 | /* |
376 | * FIXME: There seems to be a bug in set completion msg where its | |
377 | * MessageLength is 16 bytes but the ByteCount field in the xfer page | |
378 | * range shows 52 bytes | |
379 | * */ | |
fceaf24a | 380 | #if 0 |
a388eb17 | 381 | if (pkt->total_data_buflen != rndis_hdr->msg_len) { |
ca623ad3 | 382 | kunmap_atomic(rndis_hdr - pkt->page_buf[0].offset, |
0120ee0d GKH |
383 | KM_IRQ0); |
384 | ||
eb335bc4 HJ |
385 | dev_err(&dev->device, "invalid rndis message? (expected %u " |
386 | "bytes got %u)...dropping this message!\n", | |
a388eb17 | 387 | rndis_hdr->msg_len, |
72a2f5bd | 388 | pkt->total_data_buflen); |
fceaf24a HJ |
389 | return -1; |
390 | } | |
391 | #endif | |
392 | ||
a388eb17 HZ |
393 | if ((rndis_hdr->ndis_msg_type != REMOTE_NDIS_PACKET_MSG) && |
394 | (rndis_hdr->msg_len > sizeof(struct rndis_message))) { | |
eb335bc4 HJ |
395 | dev_err(&dev->device, "incoming rndis message buffer overflow " |
396 | "detected (got %u, max %zu)..marking it an error!\n", | |
a388eb17 | 397 | rndis_hdr->msg_len, |
0120ee0d | 398 | sizeof(struct rndis_message)); |
fceaf24a HJ |
399 | } |
400 | ||
c2a4efdd | 401 | memcpy(&rndis_msg, rndis_hdr, |
a388eb17 | 402 | (rndis_hdr->msg_len > sizeof(struct rndis_message)) ? |
0120ee0d | 403 | sizeof(struct rndis_message) : |
a388eb17 | 404 | rndis_hdr->msg_len); |
fceaf24a | 405 | |
ca623ad3 | 406 | kunmap_atomic(rndis_hdr - pkt->page_buf[0].offset, KM_IRQ0); |
fceaf24a | 407 | |
9c26aa0d | 408 | dump_rndis_message(&rndis_msg); |
fceaf24a | 409 | |
a388eb17 | 410 | switch (rndis_msg.ndis_msg_type) { |
fceaf24a | 411 | case REMOTE_NDIS_PACKET_MSG: |
0120ee0d | 412 | /* data msg */ |
9c26aa0d | 413 | rndis_filter_receive_data(rndis_dev, &rndis_msg, pkt); |
fceaf24a HJ |
414 | break; |
415 | ||
fceaf24a HJ |
416 | case REMOTE_NDIS_INITIALIZE_CMPLT: |
417 | case REMOTE_NDIS_QUERY_CMPLT: | |
418 | case REMOTE_NDIS_SET_CMPLT: | |
0120ee0d | 419 | /* completion msgs */ |
9c26aa0d | 420 | rndis_filter_receive_response(rndis_dev, &rndis_msg); |
fceaf24a HJ |
421 | break; |
422 | ||
fceaf24a | 423 | case REMOTE_NDIS_INDICATE_STATUS_MSG: |
0120ee0d | 424 | /* notification msgs */ |
9c26aa0d | 425 | rndis_filter_receive_indicate_status(rndis_dev, &rndis_msg); |
fceaf24a HJ |
426 | break; |
427 | default: | |
eb335bc4 HJ |
428 | dev_err(&dev->device, |
429 | "unhandled rndis message (type %u len %u)\n", | |
a388eb17 HZ |
430 | rndis_msg.ndis_msg_type, |
431 | rndis_msg.msg_len); | |
fceaf24a HJ |
432 | break; |
433 | } | |
434 | ||
fceaf24a HJ |
435 | return 0; |
436 | } | |
437 | ||
9c26aa0d | 438 | static int rndis_filter_query_device(struct rndis_device *dev, u32 oid, |
c2a4efdd | 439 | void *result, u32 *result_size) |
fceaf24a | 440 | { |
e681b954 | 441 | struct rndis_request *request; |
c2a4efdd | 442 | u32 inresult_size = *result_size; |
9f33d054 | 443 | struct rndis_query_request *query; |
c2a4efdd | 444 | struct rndis_query_complete *query_complete; |
0120ee0d | 445 | int ret = 0; |
98d79690 | 446 | int t; |
fceaf24a | 447 | |
c2a4efdd | 448 | if (!result) |
8a62d716 | 449 | return -EINVAL; |
fceaf24a | 450 | |
c2a4efdd | 451 | *result_size = 0; |
9c26aa0d | 452 | request = get_rndis_request(dev, REMOTE_NDIS_QUERY_MSG, |
0120ee0d GKH |
453 | RNDIS_MESSAGE_SIZE(struct rndis_query_request)); |
454 | if (!request) { | |
fceaf24a HJ |
455 | ret = -1; |
456 | goto Cleanup; | |
457 | } | |
458 | ||
454f18a9 | 459 | /* Setup the rndis query */ |
a388eb17 HZ |
460 | query = &request->request_msg.msg.query_req; |
461 | query->oid = oid; | |
462 | query->info_buf_offset = sizeof(struct rndis_query_request); | |
463 | query->info_buflen = 0; | |
464 | query->dev_vc_handle = 0; | |
fceaf24a | 465 | |
9c26aa0d | 466 | ret = rndis_filter_send_request(dev, request); |
fceaf24a | 467 | if (ret != 0) |
fceaf24a | 468 | goto Cleanup; |
fceaf24a | 469 | |
98d79690 S |
470 | t = wait_for_completion_timeout(&request->wait_event, HZ); |
471 | if (t == 0) { | |
0c3b7b2f S |
472 | ret = -ETIMEDOUT; |
473 | goto Cleanup; | |
474 | } | |
fceaf24a | 475 | |
454f18a9 | 476 | /* Copy the response back */ |
a388eb17 | 477 | query_complete = &request->response_msg.msg.query_complete; |
fceaf24a | 478 | |
a388eb17 | 479 | if (query_complete->info_buflen > inresult_size) { |
fceaf24a HJ |
480 | ret = -1; |
481 | goto Cleanup; | |
482 | } | |
483 | ||
c2a4efdd HZ |
484 | memcpy(result, |
485 | (void *)((unsigned long)query_complete + | |
a388eb17 HZ |
486 | query_complete->info_buf_offset), |
487 | query_complete->info_buflen); | |
fceaf24a | 488 | |
a388eb17 | 489 | *result_size = query_complete->info_buflen; |
fceaf24a HJ |
490 | |
491 | Cleanup: | |
492 | if (request) | |
9c26aa0d | 493 | put_rndis_request(dev, request); |
fceaf24a HJ |
494 | |
495 | return ret; | |
496 | } | |
497 | ||
9c26aa0d | 498 | static int rndis_filter_query_device_mac(struct rndis_device *dev) |
fceaf24a | 499 | { |
9f8bd8ba | 500 | u32 size = ETH_ALEN; |
fceaf24a | 501 | |
9c26aa0d | 502 | return rndis_filter_query_device(dev, |
0120ee0d | 503 | RNDIS_OID_802_3_PERMANENT_ADDRESS, |
c2a4efdd | 504 | dev->hw_mac_adr, &size); |
fceaf24a HJ |
505 | } |
506 | ||
9c26aa0d | 507 | static int rndis_filter_query_device_link_status(struct rndis_device *dev) |
fceaf24a | 508 | { |
0120ee0d | 509 | u32 size = sizeof(u32); |
fceaf24a | 510 | |
9c26aa0d | 511 | return rndis_filter_query_device(dev, |
0120ee0d | 512 | RNDIS_OID_GEN_MEDIA_CONNECT_STATUS, |
c2a4efdd | 513 | &dev->link_stat, &size); |
fceaf24a HJ |
514 | } |
515 | ||
9c26aa0d | 516 | static int rndis_filter_set_packet_filter(struct rndis_device *dev, |
c2a4efdd | 517 | u32 new_filter) |
fceaf24a | 518 | { |
e681b954 | 519 | struct rndis_request *request; |
9f33d054 | 520 | struct rndis_set_request *set; |
c2a4efdd | 521 | struct rndis_set_complete *set_complete; |
4d643114 | 522 | u32 status; |
98d79690 | 523 | int ret, t; |
fceaf24a | 524 | |
9c26aa0d | 525 | request = get_rndis_request(dev, REMOTE_NDIS_SET_MSG, |
0120ee0d GKH |
526 | RNDIS_MESSAGE_SIZE(struct rndis_set_request) + |
527 | sizeof(u32)); | |
528 | if (!request) { | |
fceaf24a HJ |
529 | ret = -1; |
530 | goto Cleanup; | |
531 | } | |
532 | ||
454f18a9 | 533 | /* Setup the rndis set */ |
a388eb17 HZ |
534 | set = &request->request_msg.msg.set_req; |
535 | set->oid = RNDIS_OID_GEN_CURRENT_PACKET_FILTER; | |
536 | set->info_buflen = sizeof(u32); | |
537 | set->info_buf_offset = sizeof(struct rndis_set_request); | |
fceaf24a | 538 | |
0120ee0d | 539 | memcpy((void *)(unsigned long)set + sizeof(struct rndis_set_request), |
c2a4efdd | 540 | &new_filter, sizeof(u32)); |
fceaf24a | 541 | |
9c26aa0d | 542 | ret = rndis_filter_send_request(dev, request); |
fceaf24a | 543 | if (ret != 0) |
fceaf24a | 544 | goto Cleanup; |
fceaf24a | 545 | |
98d79690 S |
546 | t = wait_for_completion_timeout(&request->wait_event, HZ); |
547 | ||
548 | if (t == 0) { | |
fceaf24a | 549 | ret = -1; |
eb335bc4 HJ |
550 | dev_err(&dev->net_dev->dev->device, |
551 | "timeout before we got a set response...\n"); | |
0120ee0d | 552 | /* |
25985edc | 553 | * We can't deallocate the request since we may still receive a |
0120ee0d GKH |
554 | * send completion for it. |
555 | */ | |
fceaf24a | 556 | goto Exit; |
0120ee0d | 557 | } else { |
fceaf24a | 558 | if (ret > 0) |
fceaf24a | 559 | ret = 0; |
a388eb17 HZ |
560 | set_complete = &request->response_msg.msg.set_complete; |
561 | status = set_complete->status; | |
fceaf24a HJ |
562 | } |
563 | ||
564 | Cleanup: | |
565 | if (request) | |
9c26aa0d | 566 | put_rndis_request(dev, request); |
fceaf24a | 567 | Exit: |
fceaf24a HJ |
568 | return ret; |
569 | } | |
570 | ||
fceaf24a | 571 | |
9c26aa0d | 572 | static int rndis_filter_init_device(struct rndis_device *dev) |
fceaf24a | 573 | { |
e681b954 | 574 | struct rndis_request *request; |
9f33d054 | 575 | struct rndis_initialize_request *init; |
c2a4efdd | 576 | struct rndis_initialize_complete *init_complete; |
4d643114 | 577 | u32 status; |
98d79690 | 578 | int ret, t; |
fceaf24a | 579 | |
9c26aa0d | 580 | request = get_rndis_request(dev, REMOTE_NDIS_INITIALIZE_MSG, |
0120ee0d GKH |
581 | RNDIS_MESSAGE_SIZE(struct rndis_initialize_request)); |
582 | if (!request) { | |
fceaf24a HJ |
583 | ret = -1; |
584 | goto Cleanup; | |
585 | } | |
586 | ||
454f18a9 | 587 | /* Setup the rndis set */ |
a388eb17 HZ |
588 | init = &request->request_msg.msg.init_req; |
589 | init->major_ver = RNDIS_MAJOR_VERSION; | |
590 | init->minor_ver = RNDIS_MINOR_VERSION; | |
0120ee0d | 591 | /* FIXME: Use 1536 - rounded ethernet frame size */ |
a388eb17 | 592 | init->max_xfer_size = 2048; |
fceaf24a | 593 | |
c2a4efdd | 594 | dev->state = RNDIS_DEV_INITIALIZING; |
fceaf24a | 595 | |
9c26aa0d | 596 | ret = rndis_filter_send_request(dev, request); |
0120ee0d | 597 | if (ret != 0) { |
c2a4efdd | 598 | dev->state = RNDIS_DEV_UNINITIALIZED; |
fceaf24a HJ |
599 | goto Cleanup; |
600 | } | |
601 | ||
0c3b7b2f | 602 | |
98d79690 S |
603 | t = wait_for_completion_timeout(&request->wait_event, HZ); |
604 | ||
605 | if (t == 0) { | |
0c3b7b2f S |
606 | ret = -ETIMEDOUT; |
607 | goto Cleanup; | |
608 | } | |
fceaf24a | 609 | |
a388eb17 HZ |
610 | init_complete = &request->response_msg.msg.init_complete; |
611 | status = init_complete->status; | |
0120ee0d | 612 | if (status == RNDIS_STATUS_SUCCESS) { |
c2a4efdd | 613 | dev->state = RNDIS_DEV_INITIALIZED; |
fceaf24a | 614 | ret = 0; |
0120ee0d | 615 | } else { |
c2a4efdd | 616 | dev->state = RNDIS_DEV_UNINITIALIZED; |
fceaf24a HJ |
617 | ret = -1; |
618 | } | |
619 | ||
620 | Cleanup: | |
621 | if (request) | |
9c26aa0d | 622 | put_rndis_request(dev, request); |
fceaf24a HJ |
623 | |
624 | return ret; | |
625 | } | |
626 | ||
9c26aa0d | 627 | static void rndis_filter_halt_device(struct rndis_device *dev) |
fceaf24a | 628 | { |
e681b954 | 629 | struct rndis_request *request; |
9f33d054 | 630 | struct rndis_halt_request *halt; |
fceaf24a | 631 | |
454f18a9 | 632 | /* Attempt to do a rndis device halt */ |
9c26aa0d | 633 | request = get_rndis_request(dev, REMOTE_NDIS_HALT_MSG, |
0120ee0d | 634 | RNDIS_MESSAGE_SIZE(struct rndis_halt_request)); |
fceaf24a | 635 | if (!request) |
fceaf24a | 636 | goto Cleanup; |
fceaf24a | 637 | |
454f18a9 | 638 | /* Setup the rndis set */ |
a388eb17 HZ |
639 | halt = &request->request_msg.msg.halt_req; |
640 | halt->req_id = atomic_inc_return(&dev->new_req_id); | |
fceaf24a | 641 | |
454f18a9 | 642 | /* Ignore return since this msg is optional. */ |
9c26aa0d | 643 | rndis_filter_send_request(dev, request); |
fceaf24a | 644 | |
c2a4efdd | 645 | dev->state = RNDIS_DEV_UNINITIALIZED; |
fceaf24a HJ |
646 | |
647 | Cleanup: | |
648 | if (request) | |
9c26aa0d | 649 | put_rndis_request(dev, request); |
fceaf24a HJ |
650 | return; |
651 | } | |
652 | ||
9c26aa0d | 653 | static int rndis_filter_open_device(struct rndis_device *dev) |
fceaf24a | 654 | { |
0120ee0d | 655 | int ret; |
fceaf24a | 656 | |
c2a4efdd | 657 | if (dev->state != RNDIS_DEV_INITIALIZED) |
fceaf24a HJ |
658 | return 0; |
659 | ||
9c26aa0d | 660 | ret = rndis_filter_set_packet_filter(dev, |
0120ee0d | 661 | NDIS_PACKET_TYPE_BROADCAST | |
95beae90 | 662 | NDIS_PACKET_TYPE_ALL_MULTICAST | |
0120ee0d | 663 | NDIS_PACKET_TYPE_DIRECTED); |
fceaf24a | 664 | if (ret == 0) |
c2a4efdd | 665 | dev->state = RNDIS_DEV_DATAINITIALIZED; |
fceaf24a | 666 | |
fceaf24a HJ |
667 | return ret; |
668 | } | |
669 | ||
9c26aa0d | 670 | static int rndis_filter_close_device(struct rndis_device *dev) |
fceaf24a HJ |
671 | { |
672 | int ret; | |
673 | ||
c2a4efdd | 674 | if (dev->state != RNDIS_DEV_DATAINITIALIZED) |
fceaf24a HJ |
675 | return 0; |
676 | ||
9c26aa0d | 677 | ret = rndis_filter_set_packet_filter(dev, 0); |
fceaf24a | 678 | if (ret == 0) |
c2a4efdd | 679 | dev->state = RNDIS_DEV_INITIALIZED; |
fceaf24a | 680 | |
fceaf24a HJ |
681 | return ret; |
682 | } | |
683 | ||
10f5a6db | 684 | int rndis_filte_device_add(struct hv_device *dev, |
c2a4efdd | 685 | void *additional_info) |
fceaf24a HJ |
686 | { |
687 | int ret; | |
ce9ea4cf | 688 | struct netvsc_device *netDevice; |
e681b954 | 689 | struct rndis_device *rndisDevice; |
c2a4efdd | 690 | struct netvsc_device_info *deviceInfo = additional_info; |
fceaf24a | 691 | |
9c26aa0d | 692 | rndisDevice = get_rndis_device(); |
83c720ea | 693 | if (!rndisDevice) |
fceaf24a | 694 | return -1; |
fceaf24a | 695 | |
0120ee0d GKH |
696 | /* |
697 | * Let the inner driver handle this first to create the netvsc channel | |
698 | * NOTE! Once the channel is created, we may get a receive callback | |
699 | * (RndisFilterOnReceive()) before this call is completed | |
700 | */ | |
ce5bf661 | 701 | ret = netvsc_device_add(dev, additional_info); |
0120ee0d GKH |
702 | if (ret != 0) { |
703 | kfree(rndisDevice); | |
fceaf24a HJ |
704 | return ret; |
705 | } | |
706 | ||
454f18a9 BP |
707 | |
708 | /* Initialize the rndis device */ | |
ca623ad3 | 709 | netDevice = dev->ext; |
fceaf24a | 710 | |
53d21fdb | 711 | netDevice->extension = rndisDevice; |
c2a4efdd | 712 | rndisDevice->net_dev = netDevice; |
fceaf24a | 713 | |
454f18a9 | 714 | /* Send the rndis initialization message */ |
9c26aa0d | 715 | ret = rndis_filter_init_device(rndisDevice); |
0120ee0d GKH |
716 | if (ret != 0) { |
717 | /* | |
718 | * TODO: If rndis init failed, we will need to shut down the | |
719 | * channel | |
720 | */ | |
fceaf24a HJ |
721 | } |
722 | ||
454f18a9 | 723 | /* Get the mac address */ |
9c26aa0d | 724 | ret = rndis_filter_query_device_mac(rndisDevice); |
0120ee0d GKH |
725 | if (ret != 0) { |
726 | /* | |
727 | * TODO: shutdown rndis device and the channel | |
728 | */ | |
fceaf24a HJ |
729 | } |
730 | ||
72a2f5bd | 731 | memcpy(deviceInfo->mac_adr, rndisDevice->hw_mac_adr, ETH_ALEN); |
fceaf24a | 732 | |
9c26aa0d | 733 | rndis_filter_query_device_link_status(rndisDevice); |
fceaf24a | 734 | |
72a2f5bd | 735 | deviceInfo->link_state = rndisDevice->link_stat; |
eb335bc4 HJ |
736 | |
737 | dev_info(&dev->device, "Device MAC %pM link state %s", | |
738 | rndisDevice->hw_mac_adr, | |
739 | ((deviceInfo->link_state) ? ("down\n") : ("up\n"))); | |
fceaf24a | 740 | |
fceaf24a HJ |
741 | return ret; |
742 | } | |
743 | ||
1405139c | 744 | int rndis_filter_device_remove(struct hv_device *dev) |
fceaf24a | 745 | { |
ca623ad3 | 746 | struct netvsc_device *net_dev = dev->ext; |
53d21fdb | 747 | struct rndis_device *rndis_dev = net_dev->extension; |
fceaf24a | 748 | |
454f18a9 | 749 | /* Halt and release the rndis device */ |
9c26aa0d | 750 | rndis_filter_halt_device(rndis_dev); |
fceaf24a | 751 | |
c2a4efdd | 752 | kfree(rndis_dev); |
53d21fdb | 753 | net_dev->extension = NULL; |
fceaf24a | 754 | |
3fae5c8f | 755 | netvsc_device_remove(dev); |
fceaf24a | 756 | |
fceaf24a HJ |
757 | return 0; |
758 | } | |
759 | ||
fceaf24a | 760 | |
9c26aa0d | 761 | int rndis_filter_open(struct hv_device *dev) |
fceaf24a | 762 | { |
ca623ad3 | 763 | struct netvsc_device *netDevice = dev->ext; |
fceaf24a | 764 | |
8a62d716 BP |
765 | if (!netDevice) |
766 | return -EINVAL; | |
767 | ||
53d21fdb | 768 | return rndis_filter_open_device(netDevice->extension); |
fceaf24a HJ |
769 | } |
770 | ||
9c26aa0d | 771 | int rndis_filter_close(struct hv_device *dev) |
fceaf24a | 772 | { |
ca623ad3 | 773 | struct netvsc_device *netDevice = dev->ext; |
fceaf24a | 774 | |
8a62d716 BP |
775 | if (!netDevice) |
776 | return -EINVAL; | |
777 | ||
53d21fdb | 778 | return rndis_filter_close_device(netDevice->extension); |
fceaf24a HJ |
779 | } |
780 | ||
0652aebc | 781 | int rndis_filter_send(struct hv_device *dev, |
c2a4efdd | 782 | struct hv_netvsc_packet *pkt) |
fceaf24a | 783 | { |
0120ee0d | 784 | int ret; |
e681b954 | 785 | struct rndis_filter_packet *filterPacket; |
9f33d054 GKH |
786 | struct rndis_message *rndisMessage; |
787 | struct rndis_packet *rndisPacket; | |
4d643114 | 788 | u32 rndisMessageSize; |
fceaf24a | 789 | |
454f18a9 | 790 | /* Add the rndis header */ |
72a2f5bd | 791 | filterPacket = (struct rndis_filter_packet *)pkt->extension; |
fceaf24a | 792 | |
e681b954 | 793 | memset(filterPacket, 0, sizeof(struct rndis_filter_packet)); |
fceaf24a | 794 | |
c2a4efdd | 795 | rndisMessage = &filterPacket->msg; |
9f33d054 | 796 | rndisMessageSize = RNDIS_MESSAGE_SIZE(struct rndis_packet); |
fceaf24a | 797 | |
a388eb17 HZ |
798 | rndisMessage->ndis_msg_type = REMOTE_NDIS_PACKET_MSG; |
799 | rndisMessage->msg_len = pkt->total_data_buflen + | |
0120ee0d | 800 | rndisMessageSize; |
fceaf24a | 801 | |
a388eb17 HZ |
802 | rndisPacket = &rndisMessage->msg.pkt; |
803 | rndisPacket->data_offset = sizeof(struct rndis_packet); | |
804 | rndisPacket->data_len = pkt->total_data_buflen; | |
fceaf24a | 805 | |
72a2f5bd | 806 | pkt->is_data_pkt = true; |
ca623ad3 HZ |
807 | pkt->page_buf[0].pfn = virt_to_phys(rndisMessage) >> PAGE_SHIFT; |
808 | pkt->page_buf[0].offset = | |
0120ee0d | 809 | (unsigned long)rndisMessage & (PAGE_SIZE-1); |
ca623ad3 | 810 | pkt->page_buf[0].len = rndisMessageSize; |
fceaf24a | 811 | |
454f18a9 | 812 | /* Save the packet send completion and context */ |
72a2f5bd | 813 | filterPacket->completion = pkt->completion.send.send_completion; |
c2a4efdd | 814 | filterPacket->completion_ctx = |
72a2f5bd | 815 | pkt->completion.send.send_completion_ctx; |
fceaf24a | 816 | |
454f18a9 | 817 | /* Use ours */ |
72a2f5bd HZ |
818 | pkt->completion.send.send_completion = rndis_filter_send_completion; |
819 | pkt->completion.send.send_completion_ctx = filterPacket; | |
fceaf24a | 820 | |
0ec6ff40 | 821 | ret = netvsc_send(dev, pkt); |
0120ee0d GKH |
822 | if (ret != 0) { |
823 | /* | |
824 | * Reset the completion to originals to allow retries from | |
825 | * above | |
826 | */ | |
72a2f5bd | 827 | pkt->completion.send.send_completion = |
c2a4efdd | 828 | filterPacket->completion; |
72a2f5bd | 829 | pkt->completion.send.send_completion_ctx = |
c2a4efdd | 830 | filterPacket->completion_ctx; |
fceaf24a HJ |
831 | } |
832 | ||
fceaf24a HJ |
833 | return ret; |
834 | } | |
835 | ||
9c26aa0d | 836 | static void rndis_filter_send_completion(void *ctx) |
fceaf24a | 837 | { |
c2a4efdd | 838 | struct rndis_filter_packet *filterPacket = ctx; |
fceaf24a | 839 | |
454f18a9 | 840 | /* Pass it back to the original handler */ |
c2a4efdd | 841 | filterPacket->completion(filterPacket->completion_ctx); |
fceaf24a HJ |
842 | } |
843 | ||
844 | ||
9c26aa0d | 845 | static void rndis_filter_send_request_completion(void *ctx) |
fceaf24a | 846 | { |
454f18a9 | 847 | /* Noop */ |
fceaf24a | 848 | } |