Commit | Line | Data |
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fceaf24a | 1 | /* |
fceaf24a HJ |
2 | * Copyright (c) 2009, Microsoft Corporation. |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms and conditions of the GNU General Public License, | |
6 | * version 2, as published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope it will be useful, but WITHOUT | |
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
11 | * more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License along with | |
14 | * this program; if not, write to the Free Software Foundation, Inc., 59 Temple | |
15 | * Place - Suite 330, Boston, MA 02111-1307 USA. | |
16 | * | |
17 | * Authors: | |
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 | |
454f18a9 | 33 | /* Data types */ |
e681b954 | 34 | struct rndis_filter_driver_object { |
454f18a9 | 35 | /* The original driver */ |
c2a4efdd | 36 | struct netvsc_driver inner_drv; |
e681b954 | 37 | }; |
fceaf24a | 38 | |
e681b954 | 39 | enum rndis_device_state { |
fceaf24a HJ |
40 | RNDIS_DEV_UNINITIALIZED = 0, |
41 | RNDIS_DEV_INITIALIZING, | |
42 | RNDIS_DEV_INITIALIZED, | |
43 | RNDIS_DEV_DATAINITIALIZED, | |
e681b954 | 44 | }; |
fceaf24a | 45 | |
e681b954 | 46 | struct rndis_device { |
c2a4efdd | 47 | struct netvsc_device *net_dev; |
fceaf24a | 48 | |
c2a4efdd HZ |
49 | enum rndis_device_state state; |
50 | u32 link_stat; | |
51 | atomic_t new_req_id; | |
fceaf24a | 52 | |
880fb89c | 53 | spinlock_t request_lock; |
c2a4efdd | 54 | struct list_head req_list; |
fceaf24a | 55 | |
c2a4efdd | 56 | unsigned char hw_mac_adr[ETH_ALEN]; |
e681b954 | 57 | }; |
fceaf24a | 58 | |
e681b954 | 59 | struct rndis_request { |
c2a4efdd | 60 | struct list_head list_ent; |
98d79690 | 61 | struct completion wait_event; |
fceaf24a | 62 | |
0120ee0d GKH |
63 | /* |
64 | * FIXME: We assumed a fixed size response here. If we do ever need to | |
65 | * handle a bigger response, we can either define a max response | |
66 | * message or add a response buffer variable above this field | |
67 | */ | |
c2a4efdd | 68 | struct rndis_message response_msg; |
fceaf24a | 69 | |
454f18a9 | 70 | /* Simplify allocation by having a netvsc packet inline */ |
c2a4efdd HZ |
71 | struct hv_netvsc_packet pkt; |
72 | struct hv_page_buffer buf; | |
454f18a9 | 73 | /* FIXME: We assumed a fixed size request here. */ |
c2a4efdd | 74 | struct rndis_message request_msg; |
e681b954 | 75 | }; |
fceaf24a HJ |
76 | |
77 | ||
e681b954 | 78 | struct rndis_filter_packet { |
c2a4efdd HZ |
79 | void *completion_ctx; |
80 | void (*completion)(void *context); | |
81 | struct rndis_message msg; | |
e681b954 | 82 | }; |
fceaf24a | 83 | |
454f18a9 | 84 | |
9c26aa0d | 85 | static void rndis_filter_send_completion(void *ctx); |
0120ee0d | 86 | |
9c26aa0d | 87 | static void rndis_filter_send_request_completion(void *ctx); |
454f18a9 BP |
88 | |
89 | ||
90 | /* The one and only */ | |
c2a4efdd | 91 | static struct rndis_filter_driver_object rndis_filter; |
fceaf24a | 92 | |
9c26aa0d | 93 | static struct rndis_device *get_rndis_device(void) |
fceaf24a | 94 | { |
e681b954 | 95 | struct rndis_device *device; |
fceaf24a | 96 | |
e681b954 | 97 | device = kzalloc(sizeof(struct rndis_device), GFP_KERNEL); |
fceaf24a | 98 | if (!device) |
fceaf24a | 99 | return NULL; |
fceaf24a | 100 | |
880fb89c | 101 | spin_lock_init(&device->request_lock); |
fceaf24a | 102 | |
c2a4efdd | 103 | INIT_LIST_HEAD(&device->req_list); |
fceaf24a | 104 | |
c2a4efdd | 105 | device->state = RNDIS_DEV_UNINITIALIZED; |
fceaf24a HJ |
106 | |
107 | return device; | |
108 | } | |
109 | ||
9c26aa0d | 110 | static struct rndis_request *get_rndis_request(struct rndis_device *dev, |
c2a4efdd HZ |
111 | u32 msg_type, |
112 | u32 msg_len) | |
fceaf24a | 113 | { |
e681b954 | 114 | struct rndis_request *request; |
c2a4efdd | 115 | struct rndis_message *rndis_msg; |
9f33d054 | 116 | struct rndis_set_request *set; |
880fb89c | 117 | unsigned long flags; |
fceaf24a | 118 | |
e681b954 | 119 | request = kzalloc(sizeof(struct rndis_request), GFP_KERNEL); |
fceaf24a | 120 | if (!request) |
fceaf24a | 121 | return NULL; |
fceaf24a | 122 | |
98d79690 | 123 | init_completion(&request->wait_event); |
fceaf24a | 124 | |
c2a4efdd | 125 | rndis_msg = &request->request_msg; |
a388eb17 HZ |
126 | rndis_msg->ndis_msg_type = msg_type; |
127 | rndis_msg->msg_len = msg_len; | |
fceaf24a | 128 | |
0120ee0d GKH |
129 | /* |
130 | * Set the request id. This field is always after the rndis header for | |
131 | * request/response packet types so we just used the SetRequest as a | |
132 | * template | |
133 | */ | |
a388eb17 HZ |
134 | set = &rndis_msg->msg.set_req; |
135 | set->req_id = atomic_inc_return(&dev->new_req_id); | |
fceaf24a | 136 | |
454f18a9 | 137 | /* Add to the request list */ |
c2a4efdd HZ |
138 | spin_lock_irqsave(&dev->request_lock, flags); |
139 | list_add_tail(&request->list_ent, &dev->req_list); | |
140 | spin_unlock_irqrestore(&dev->request_lock, flags); | |
fceaf24a HJ |
141 | |
142 | return request; | |
143 | } | |
144 | ||
9c26aa0d | 145 | static void put_rndis_request(struct rndis_device *dev, |
c2a4efdd | 146 | struct rndis_request *req) |
fceaf24a | 147 | { |
880fb89c GKH |
148 | unsigned long flags; |
149 | ||
c2a4efdd HZ |
150 | spin_lock_irqsave(&dev->request_lock, flags); |
151 | list_del(&req->list_ent); | |
152 | spin_unlock_irqrestore(&dev->request_lock, flags); | |
fceaf24a | 153 | |
c2a4efdd | 154 | kfree(req); |
fceaf24a HJ |
155 | } |
156 | ||
9c26aa0d | 157 | static void dump_rndis_message(struct rndis_message *rndis_msg) |
fceaf24a | 158 | { |
a388eb17 | 159 | switch (rndis_msg->ndis_msg_type) { |
fceaf24a | 160 | case REMOTE_NDIS_PACKET_MSG: |
0120ee0d GKH |
161 | DPRINT_DBG(NETVSC, "REMOTE_NDIS_PACKET_MSG (len %u, " |
162 | "data offset %u data len %u, # oob %u, " | |
163 | "oob offset %u, oob len %u, pkt offset %u, " | |
164 | "pkt len %u", | |
a388eb17 HZ |
165 | rndis_msg->msg_len, |
166 | rndis_msg->msg.pkt.data_offset, | |
167 | rndis_msg->msg.pkt.data_len, | |
168 | rndis_msg->msg.pkt.num_oob_data_elements, | |
169 | rndis_msg->msg.pkt.oob_data_offset, | |
170 | rndis_msg->msg.pkt.oob_data_len, | |
171 | rndis_msg->msg.pkt.per_pkt_info_offset, | |
172 | rndis_msg->msg.pkt.per_pkt_info_len); | |
fceaf24a HJ |
173 | break; |
174 | ||
175 | case REMOTE_NDIS_INITIALIZE_CMPLT: | |
0120ee0d GKH |
176 | DPRINT_DBG(NETVSC, "REMOTE_NDIS_INITIALIZE_CMPLT " |
177 | "(len %u, id 0x%x, status 0x%x, major %d, minor %d, " | |
178 | "device flags %d, max xfer size 0x%x, max pkts %u, " | |
179 | "pkt aligned %u)", | |
a388eb17 HZ |
180 | rndis_msg->msg_len, |
181 | rndis_msg->msg.init_complete.req_id, | |
182 | rndis_msg->msg.init_complete.status, | |
183 | rndis_msg->msg.init_complete.major_ver, | |
184 | rndis_msg->msg.init_complete.minor_ver, | |
185 | rndis_msg->msg.init_complete.dev_flags, | |
186 | rndis_msg->msg.init_complete.max_xfer_size, | |
187 | rndis_msg->msg.init_complete. | |
188 | max_pkt_per_msg, | |
189 | rndis_msg->msg.init_complete. | |
190 | pkt_alignment_factor); | |
fceaf24a HJ |
191 | break; |
192 | ||
193 | case REMOTE_NDIS_QUERY_CMPLT: | |
0120ee0d GKH |
194 | DPRINT_DBG(NETVSC, "REMOTE_NDIS_QUERY_CMPLT " |
195 | "(len %u, id 0x%x, status 0x%x, buf len %u, " | |
196 | "buf offset %u)", | |
a388eb17 HZ |
197 | rndis_msg->msg_len, |
198 | rndis_msg->msg.query_complete.req_id, | |
199 | rndis_msg->msg.query_complete.status, | |
200 | rndis_msg->msg.query_complete. | |
201 | info_buflen, | |
202 | rndis_msg->msg.query_complete. | |
203 | info_buf_offset); | |
fceaf24a HJ |
204 | break; |
205 | ||
206 | case REMOTE_NDIS_SET_CMPLT: | |
0120ee0d GKH |
207 | DPRINT_DBG(NETVSC, |
208 | "REMOTE_NDIS_SET_CMPLT (len %u, id 0x%x, status 0x%x)", | |
a388eb17 HZ |
209 | rndis_msg->msg_len, |
210 | rndis_msg->msg.set_complete.req_id, | |
211 | rndis_msg->msg.set_complete.status); | |
fceaf24a HJ |
212 | break; |
213 | ||
214 | case REMOTE_NDIS_INDICATE_STATUS_MSG: | |
0120ee0d GKH |
215 | DPRINT_DBG(NETVSC, "REMOTE_NDIS_INDICATE_STATUS_MSG " |
216 | "(len %u, status 0x%x, buf len %u, buf offset %u)", | |
a388eb17 HZ |
217 | rndis_msg->msg_len, |
218 | rndis_msg->msg.indicate_status.status, | |
219 | rndis_msg->msg.indicate_status.status_buflen, | |
220 | rndis_msg->msg.indicate_status.status_buf_offset); | |
fceaf24a HJ |
221 | break; |
222 | ||
223 | default: | |
224 | DPRINT_DBG(NETVSC, "0x%x (len %u)", | |
a388eb17 HZ |
225 | rndis_msg->ndis_msg_type, |
226 | rndis_msg->msg_len); | |
fceaf24a HJ |
227 | break; |
228 | } | |
229 | } | |
230 | ||
9c26aa0d | 231 | static int rndis_filter_send_request(struct rndis_device *dev, |
c2a4efdd | 232 | struct rndis_request *req) |
fceaf24a | 233 | { |
0120ee0d | 234 | int ret; |
4193d4f4 | 235 | struct hv_netvsc_packet *packet; |
fceaf24a | 236 | |
454f18a9 | 237 | /* Setup the packet to send it */ |
c2a4efdd | 238 | packet = &req->pkt; |
fceaf24a | 239 | |
72a2f5bd | 240 | packet->is_data_pkt = false; |
a388eb17 | 241 | packet->total_data_buflen = req->request_msg.msg_len; |
72a2f5bd | 242 | packet->page_buf_cnt = 1; |
fceaf24a | 243 | |
ca623ad3 | 244 | packet->page_buf[0].pfn = virt_to_phys(&req->request_msg) >> |
0120ee0d | 245 | PAGE_SHIFT; |
ca623ad3 HZ |
246 | packet->page_buf[0].len = req->request_msg.msg_len; |
247 | packet->page_buf[0].offset = | |
c2a4efdd | 248 | (unsigned long)&req->request_msg & (PAGE_SIZE - 1); |
fceaf24a | 249 | |
72a2f5bd HZ |
250 | packet->completion.send.send_completion_ctx = req;/* packet; */ |
251 | packet->completion.send.send_completion = | |
9c26aa0d | 252 | rndis_filter_send_request_completion; |
72a2f5bd | 253 | packet->completion.send.send_completion_tid = (unsigned long)dev; |
fceaf24a | 254 | |
53d21fdb | 255 | ret = rndis_filter.inner_drv.send(dev->net_dev->dev, packet); |
fceaf24a HJ |
256 | return ret; |
257 | } | |
258 | ||
9c26aa0d | 259 | static void rndis_filter_receive_response(struct rndis_device *dev, |
c2a4efdd | 260 | struct rndis_message *resp) |
fceaf24a | 261 | { |
e681b954 | 262 | struct rndis_request *request = NULL; |
0e727613 | 263 | bool found = false; |
880fb89c | 264 | unsigned long flags; |
fceaf24a | 265 | |
c2a4efdd HZ |
266 | spin_lock_irqsave(&dev->request_lock, flags); |
267 | list_for_each_entry(request, &dev->req_list, list_ent) { | |
0120ee0d GKH |
268 | /* |
269 | * All request/response message contains RequestId as the 1st | |
270 | * field | |
271 | */ | |
a388eb17 HZ |
272 | if (request->request_msg.msg.init_req.req_id |
273 | == resp->msg.init_complete.req_id) { | |
0e727613 | 274 | found = true; |
fceaf24a HJ |
275 | break; |
276 | } | |
277 | } | |
c2a4efdd | 278 | spin_unlock_irqrestore(&dev->request_lock, flags); |
fceaf24a | 279 | |
0120ee0d | 280 | if (found) { |
a388eb17 | 281 | if (resp->msg_len <= sizeof(struct rndis_message)) { |
c2a4efdd | 282 | memcpy(&request->response_msg, resp, |
a388eb17 | 283 | resp->msg_len); |
0120ee0d | 284 | } else { |
eb335bc4 HJ |
285 | dev_err(&dev->net_dev->dev->device, |
286 | "rndis response buffer overflow " | |
287 | "detected (size %u max %zu)\n", | |
288 | resp->msg_len, | |
289 | sizeof(struct rndis_filter_packet)); | |
0120ee0d | 290 | |
a388eb17 | 291 | if (resp->ndis_msg_type == |
0120ee0d GKH |
292 | REMOTE_NDIS_RESET_CMPLT) { |
293 | /* does not have a request id field */ | |
a388eb17 HZ |
294 | request->response_msg.msg.reset_complete. |
295 | status = STATUS_BUFFER_OVERFLOW; | |
0120ee0d | 296 | } else { |
a388eb17 HZ |
297 | request->response_msg.msg. |
298 | init_complete.status = | |
c2a4efdd | 299 | STATUS_BUFFER_OVERFLOW; |
fceaf24a HJ |
300 | } |
301 | } | |
302 | ||
98d79690 | 303 | complete(&request->wait_event); |
0120ee0d | 304 | } else { |
eb335bc4 HJ |
305 | dev_err(&dev->net_dev->dev->device, |
306 | "no rndis request found for this response " | |
307 | "(id 0x%x res type 0x%x)\n", | |
308 | resp->msg.init_complete.req_id, | |
309 | resp->ndis_msg_type); | |
fceaf24a | 310 | } |
fceaf24a HJ |
311 | } |
312 | ||
9c26aa0d | 313 | static void rndis_filter_receive_indicate_status(struct rndis_device *dev, |
c2a4efdd | 314 | struct rndis_message *resp) |
fceaf24a | 315 | { |
0120ee0d | 316 | struct rndis_indicate_status *indicate = |
a388eb17 | 317 | &resp->msg.indicate_status; |
fceaf24a | 318 | |
a388eb17 | 319 | if (indicate->status == RNDIS_STATUS_MEDIA_CONNECT) { |
72a2f5bd | 320 | rndis_filter.inner_drv.link_status_change( |
53d21fdb | 321 | dev->net_dev->dev, 1); |
a388eb17 | 322 | } else if (indicate->status == RNDIS_STATUS_MEDIA_DISCONNECT) { |
72a2f5bd | 323 | rndis_filter.inner_drv.link_status_change( |
53d21fdb | 324 | dev->net_dev->dev, 0); |
0120ee0d GKH |
325 | } else { |
326 | /* | |
327 | * TODO: | |
328 | */ | |
fceaf24a HJ |
329 | } |
330 | } | |
331 | ||
9c26aa0d | 332 | static void rndis_filter_receive_data(struct rndis_device *dev, |
c2a4efdd HZ |
333 | struct rndis_message *msg, |
334 | struct hv_netvsc_packet *pkt) | |
fceaf24a | 335 | { |
c2a4efdd HZ |
336 | struct rndis_packet *rndis_pkt; |
337 | u32 data_offset; | |
fceaf24a | 338 | |
a388eb17 | 339 | rndis_pkt = &msg->msg.pkt; |
fceaf24a | 340 | |
0120ee0d GKH |
341 | /* |
342 | * FIXME: Handle multiple rndis pkt msgs that maybe enclosed in this | |
343 | * netvsc packet (ie TotalDataBufferLength != MessageLength) | |
344 | */ | |
fceaf24a | 345 | |
454f18a9 | 346 | /* Remove the rndis header and pass it back up the stack */ |
a388eb17 | 347 | data_offset = RNDIS_HEADER_SIZE + rndis_pkt->data_offset; |
fceaf24a | 348 | |
72a2f5bd | 349 | pkt->total_data_buflen -= data_offset; |
ca623ad3 HZ |
350 | pkt->page_buf[0].offset += data_offset; |
351 | pkt->page_buf[0].len -= data_offset; | |
fceaf24a | 352 | |
72a2f5bd | 353 | pkt->is_data_pkt = true; |
fceaf24a | 354 | |
53d21fdb | 355 | rndis_filter.inner_drv.recv_cb(dev->net_dev->dev, |
c2a4efdd | 356 | pkt); |
fceaf24a HJ |
357 | } |
358 | ||
5fcc4115 | 359 | int rndis_filter_receive(struct hv_device *dev, |
c2a4efdd | 360 | struct hv_netvsc_packet *pkt) |
fceaf24a | 361 | { |
ca623ad3 | 362 | struct netvsc_device *net_dev = dev->ext; |
c2a4efdd HZ |
363 | struct rndis_device *rndis_dev; |
364 | struct rndis_message rndis_msg; | |
365 | struct rndis_message *rndis_hdr; | |
fceaf24a | 366 | |
c2a4efdd | 367 | if (!net_dev) |
8a62d716 BP |
368 | return -EINVAL; |
369 | ||
454f18a9 | 370 | /* Make sure the rndis device state is initialized */ |
53d21fdb | 371 | if (!net_dev->extension) { |
eb335bc4 HJ |
372 | dev_err(&dev->device, "got rndis message but no rndis device - " |
373 | "dropping this message!\n"); | |
fceaf24a HJ |
374 | return -1; |
375 | } | |
376 | ||
53d21fdb | 377 | rndis_dev = (struct rndis_device *)net_dev->extension; |
c2a4efdd | 378 | if (rndis_dev->state == RNDIS_DEV_UNINITIALIZED) { |
eb335bc4 HJ |
379 | dev_err(&dev->device, "got rndis message but rndis device " |
380 | "uninitialized...dropping this message!\n"); | |
fceaf24a HJ |
381 | return -1; |
382 | } | |
383 | ||
c2a4efdd | 384 | rndis_hdr = (struct rndis_message *)kmap_atomic( |
ca623ad3 | 385 | pfn_to_page(pkt->page_buf[0].pfn), KM_IRQ0); |
fceaf24a | 386 | |
c2a4efdd | 387 | rndis_hdr = (void *)((unsigned long)rndis_hdr + |
ca623ad3 | 388 | pkt->page_buf[0].offset); |
fceaf24a | 389 | |
454f18a9 | 390 | /* Make sure we got a valid rndis message */ |
0120ee0d GKH |
391 | /* |
392 | * FIXME: There seems to be a bug in set completion msg where its | |
393 | * MessageLength is 16 bytes but the ByteCount field in the xfer page | |
394 | * range shows 52 bytes | |
395 | * */ | |
fceaf24a | 396 | #if 0 |
a388eb17 | 397 | if (pkt->total_data_buflen != rndis_hdr->msg_len) { |
ca623ad3 | 398 | kunmap_atomic(rndis_hdr - pkt->page_buf[0].offset, |
0120ee0d GKH |
399 | KM_IRQ0); |
400 | ||
eb335bc4 HJ |
401 | dev_err(&dev->device, "invalid rndis message? (expected %u " |
402 | "bytes got %u)...dropping this message!\n", | |
a388eb17 | 403 | rndis_hdr->msg_len, |
72a2f5bd | 404 | pkt->total_data_buflen); |
fceaf24a HJ |
405 | return -1; |
406 | } | |
407 | #endif | |
408 | ||
a388eb17 HZ |
409 | if ((rndis_hdr->ndis_msg_type != REMOTE_NDIS_PACKET_MSG) && |
410 | (rndis_hdr->msg_len > sizeof(struct rndis_message))) { | |
eb335bc4 HJ |
411 | dev_err(&dev->device, "incoming rndis message buffer overflow " |
412 | "detected (got %u, max %zu)..marking it an error!\n", | |
a388eb17 | 413 | rndis_hdr->msg_len, |
0120ee0d | 414 | sizeof(struct rndis_message)); |
fceaf24a HJ |
415 | } |
416 | ||
c2a4efdd | 417 | memcpy(&rndis_msg, rndis_hdr, |
a388eb17 | 418 | (rndis_hdr->msg_len > sizeof(struct rndis_message)) ? |
0120ee0d | 419 | sizeof(struct rndis_message) : |
a388eb17 | 420 | rndis_hdr->msg_len); |
fceaf24a | 421 | |
ca623ad3 | 422 | kunmap_atomic(rndis_hdr - pkt->page_buf[0].offset, KM_IRQ0); |
fceaf24a | 423 | |
9c26aa0d | 424 | dump_rndis_message(&rndis_msg); |
fceaf24a | 425 | |
a388eb17 | 426 | switch (rndis_msg.ndis_msg_type) { |
fceaf24a | 427 | case REMOTE_NDIS_PACKET_MSG: |
0120ee0d | 428 | /* data msg */ |
9c26aa0d | 429 | rndis_filter_receive_data(rndis_dev, &rndis_msg, pkt); |
fceaf24a HJ |
430 | break; |
431 | ||
fceaf24a HJ |
432 | case REMOTE_NDIS_INITIALIZE_CMPLT: |
433 | case REMOTE_NDIS_QUERY_CMPLT: | |
434 | case REMOTE_NDIS_SET_CMPLT: | |
0120ee0d | 435 | /* completion msgs */ |
9c26aa0d | 436 | rndis_filter_receive_response(rndis_dev, &rndis_msg); |
fceaf24a HJ |
437 | break; |
438 | ||
fceaf24a | 439 | case REMOTE_NDIS_INDICATE_STATUS_MSG: |
0120ee0d | 440 | /* notification msgs */ |
9c26aa0d | 441 | rndis_filter_receive_indicate_status(rndis_dev, &rndis_msg); |
fceaf24a HJ |
442 | break; |
443 | default: | |
eb335bc4 HJ |
444 | dev_err(&dev->device, |
445 | "unhandled rndis message (type %u len %u)\n", | |
a388eb17 HZ |
446 | rndis_msg.ndis_msg_type, |
447 | rndis_msg.msg_len); | |
fceaf24a HJ |
448 | break; |
449 | } | |
450 | ||
fceaf24a HJ |
451 | return 0; |
452 | } | |
453 | ||
9c26aa0d | 454 | static int rndis_filter_query_device(struct rndis_device *dev, u32 oid, |
c2a4efdd | 455 | void *result, u32 *result_size) |
fceaf24a | 456 | { |
e681b954 | 457 | struct rndis_request *request; |
c2a4efdd | 458 | u32 inresult_size = *result_size; |
9f33d054 | 459 | struct rndis_query_request *query; |
c2a4efdd | 460 | struct rndis_query_complete *query_complete; |
0120ee0d | 461 | int ret = 0; |
98d79690 | 462 | int t; |
fceaf24a | 463 | |
c2a4efdd | 464 | if (!result) |
8a62d716 | 465 | return -EINVAL; |
fceaf24a | 466 | |
c2a4efdd | 467 | *result_size = 0; |
9c26aa0d | 468 | request = get_rndis_request(dev, REMOTE_NDIS_QUERY_MSG, |
0120ee0d GKH |
469 | RNDIS_MESSAGE_SIZE(struct rndis_query_request)); |
470 | if (!request) { | |
fceaf24a HJ |
471 | ret = -1; |
472 | goto Cleanup; | |
473 | } | |
474 | ||
454f18a9 | 475 | /* Setup the rndis query */ |
a388eb17 HZ |
476 | query = &request->request_msg.msg.query_req; |
477 | query->oid = oid; | |
478 | query->info_buf_offset = sizeof(struct rndis_query_request); | |
479 | query->info_buflen = 0; | |
480 | query->dev_vc_handle = 0; | |
fceaf24a | 481 | |
9c26aa0d | 482 | ret = rndis_filter_send_request(dev, request); |
fceaf24a | 483 | if (ret != 0) |
fceaf24a | 484 | goto Cleanup; |
fceaf24a | 485 | |
98d79690 S |
486 | t = wait_for_completion_timeout(&request->wait_event, HZ); |
487 | if (t == 0) { | |
0c3b7b2f S |
488 | ret = -ETIMEDOUT; |
489 | goto Cleanup; | |
490 | } | |
fceaf24a | 491 | |
454f18a9 | 492 | /* Copy the response back */ |
a388eb17 | 493 | query_complete = &request->response_msg.msg.query_complete; |
fceaf24a | 494 | |
a388eb17 | 495 | if (query_complete->info_buflen > inresult_size) { |
fceaf24a HJ |
496 | ret = -1; |
497 | goto Cleanup; | |
498 | } | |
499 | ||
c2a4efdd HZ |
500 | memcpy(result, |
501 | (void *)((unsigned long)query_complete + | |
a388eb17 HZ |
502 | query_complete->info_buf_offset), |
503 | query_complete->info_buflen); | |
fceaf24a | 504 | |
a388eb17 | 505 | *result_size = query_complete->info_buflen; |
fceaf24a HJ |
506 | |
507 | Cleanup: | |
508 | if (request) | |
9c26aa0d | 509 | put_rndis_request(dev, request); |
fceaf24a HJ |
510 | |
511 | return ret; | |
512 | } | |
513 | ||
9c26aa0d | 514 | static int rndis_filter_query_device_mac(struct rndis_device *dev) |
fceaf24a | 515 | { |
9f8bd8ba | 516 | u32 size = ETH_ALEN; |
fceaf24a | 517 | |
9c26aa0d | 518 | return rndis_filter_query_device(dev, |
0120ee0d | 519 | RNDIS_OID_802_3_PERMANENT_ADDRESS, |
c2a4efdd | 520 | dev->hw_mac_adr, &size); |
fceaf24a HJ |
521 | } |
522 | ||
9c26aa0d | 523 | static int rndis_filter_query_device_link_status(struct rndis_device *dev) |
fceaf24a | 524 | { |
0120ee0d | 525 | u32 size = sizeof(u32); |
fceaf24a | 526 | |
9c26aa0d | 527 | return rndis_filter_query_device(dev, |
0120ee0d | 528 | RNDIS_OID_GEN_MEDIA_CONNECT_STATUS, |
c2a4efdd | 529 | &dev->link_stat, &size); |
fceaf24a HJ |
530 | } |
531 | ||
9c26aa0d | 532 | static int rndis_filter_set_packet_filter(struct rndis_device *dev, |
c2a4efdd | 533 | u32 new_filter) |
fceaf24a | 534 | { |
e681b954 | 535 | struct rndis_request *request; |
9f33d054 | 536 | struct rndis_set_request *set; |
c2a4efdd | 537 | struct rndis_set_complete *set_complete; |
4d643114 | 538 | u32 status; |
98d79690 | 539 | int ret, t; |
fceaf24a | 540 | |
9c26aa0d | 541 | request = get_rndis_request(dev, REMOTE_NDIS_SET_MSG, |
0120ee0d GKH |
542 | RNDIS_MESSAGE_SIZE(struct rndis_set_request) + |
543 | sizeof(u32)); | |
544 | if (!request) { | |
fceaf24a HJ |
545 | ret = -1; |
546 | goto Cleanup; | |
547 | } | |
548 | ||
454f18a9 | 549 | /* Setup the rndis set */ |
a388eb17 HZ |
550 | set = &request->request_msg.msg.set_req; |
551 | set->oid = RNDIS_OID_GEN_CURRENT_PACKET_FILTER; | |
552 | set->info_buflen = sizeof(u32); | |
553 | set->info_buf_offset = sizeof(struct rndis_set_request); | |
fceaf24a | 554 | |
0120ee0d | 555 | memcpy((void *)(unsigned long)set + sizeof(struct rndis_set_request), |
c2a4efdd | 556 | &new_filter, sizeof(u32)); |
fceaf24a | 557 | |
9c26aa0d | 558 | ret = rndis_filter_send_request(dev, request); |
fceaf24a | 559 | if (ret != 0) |
fceaf24a | 560 | goto Cleanup; |
fceaf24a | 561 | |
98d79690 S |
562 | t = wait_for_completion_timeout(&request->wait_event, HZ); |
563 | ||
564 | if (t == 0) { | |
fceaf24a | 565 | ret = -1; |
eb335bc4 HJ |
566 | dev_err(&dev->net_dev->dev->device, |
567 | "timeout before we got a set response...\n"); | |
0120ee0d | 568 | /* |
25985edc | 569 | * We can't deallocate the request since we may still receive a |
0120ee0d GKH |
570 | * send completion for it. |
571 | */ | |
fceaf24a | 572 | goto Exit; |
0120ee0d | 573 | } else { |
fceaf24a | 574 | if (ret > 0) |
fceaf24a | 575 | ret = 0; |
a388eb17 HZ |
576 | set_complete = &request->response_msg.msg.set_complete; |
577 | status = set_complete->status; | |
fceaf24a HJ |
578 | } |
579 | ||
580 | Cleanup: | |
581 | if (request) | |
9c26aa0d | 582 | put_rndis_request(dev, request); |
fceaf24a | 583 | Exit: |
fceaf24a HJ |
584 | return ret; |
585 | } | |
586 | ||
9c26aa0d | 587 | int rndis_filter_init(struct netvsc_driver *drv) |
fceaf24a | 588 | { |
72a2f5bd | 589 | drv->req_ext_size = sizeof(struct rndis_filter_packet); |
fceaf24a | 590 | |
454f18a9 | 591 | /* Driver->Context = rndisDriver; */ |
fceaf24a | 592 | |
c2a4efdd | 593 | memset(&rndis_filter, 0, sizeof(struct rndis_filter_driver_object)); |
fceaf24a HJ |
594 | |
595 | /*rndisDriver->Driver = Driver; | |
596 | ||
597 | ASSERT(Driver->OnLinkStatusChanged); | |
598 | rndisDriver->OnLinkStatusChanged = Driver->OnLinkStatusChanged;*/ | |
599 | ||
454f18a9 | 600 | /* Save the original dispatch handlers before we override it */ |
72a2f5bd HZ |
601 | rndis_filter.inner_drv.send = drv->send; |
602 | rndis_filter.inner_drv.recv_cb = drv->recv_cb; | |
603 | rndis_filter.inner_drv.link_status_change = | |
604 | drv->link_status_change; | |
fceaf24a | 605 | |
454f18a9 | 606 | /* Override */ |
72a2f5bd | 607 | drv->send = rndis_filter_send; |
72a2f5bd | 608 | drv->recv_cb = rndis_filter_receive; |
fceaf24a | 609 | |
fceaf24a HJ |
610 | return 0; |
611 | } | |
612 | ||
9c26aa0d | 613 | static int rndis_filter_init_device(struct rndis_device *dev) |
fceaf24a | 614 | { |
e681b954 | 615 | struct rndis_request *request; |
9f33d054 | 616 | struct rndis_initialize_request *init; |
c2a4efdd | 617 | struct rndis_initialize_complete *init_complete; |
4d643114 | 618 | u32 status; |
98d79690 | 619 | int ret, t; |
fceaf24a | 620 | |
9c26aa0d | 621 | request = get_rndis_request(dev, REMOTE_NDIS_INITIALIZE_MSG, |
0120ee0d GKH |
622 | RNDIS_MESSAGE_SIZE(struct rndis_initialize_request)); |
623 | if (!request) { | |
fceaf24a HJ |
624 | ret = -1; |
625 | goto Cleanup; | |
626 | } | |
627 | ||
454f18a9 | 628 | /* Setup the rndis set */ |
a388eb17 HZ |
629 | init = &request->request_msg.msg.init_req; |
630 | init->major_ver = RNDIS_MAJOR_VERSION; | |
631 | init->minor_ver = RNDIS_MINOR_VERSION; | |
0120ee0d | 632 | /* FIXME: Use 1536 - rounded ethernet frame size */ |
a388eb17 | 633 | init->max_xfer_size = 2048; |
fceaf24a | 634 | |
c2a4efdd | 635 | dev->state = RNDIS_DEV_INITIALIZING; |
fceaf24a | 636 | |
9c26aa0d | 637 | ret = rndis_filter_send_request(dev, request); |
0120ee0d | 638 | if (ret != 0) { |
c2a4efdd | 639 | dev->state = RNDIS_DEV_UNINITIALIZED; |
fceaf24a HJ |
640 | goto Cleanup; |
641 | } | |
642 | ||
0c3b7b2f | 643 | |
98d79690 S |
644 | t = wait_for_completion_timeout(&request->wait_event, HZ); |
645 | ||
646 | if (t == 0) { | |
0c3b7b2f S |
647 | ret = -ETIMEDOUT; |
648 | goto Cleanup; | |
649 | } | |
fceaf24a | 650 | |
a388eb17 HZ |
651 | init_complete = &request->response_msg.msg.init_complete; |
652 | status = init_complete->status; | |
0120ee0d | 653 | if (status == RNDIS_STATUS_SUCCESS) { |
c2a4efdd | 654 | dev->state = RNDIS_DEV_INITIALIZED; |
fceaf24a | 655 | ret = 0; |
0120ee0d | 656 | } else { |
c2a4efdd | 657 | dev->state = RNDIS_DEV_UNINITIALIZED; |
fceaf24a HJ |
658 | ret = -1; |
659 | } | |
660 | ||
661 | Cleanup: | |
662 | if (request) | |
9c26aa0d | 663 | put_rndis_request(dev, request); |
fceaf24a HJ |
664 | |
665 | return ret; | |
666 | } | |
667 | ||
9c26aa0d | 668 | static void rndis_filter_halt_device(struct rndis_device *dev) |
fceaf24a | 669 | { |
e681b954 | 670 | struct rndis_request *request; |
9f33d054 | 671 | struct rndis_halt_request *halt; |
fceaf24a | 672 | |
454f18a9 | 673 | /* Attempt to do a rndis device halt */ |
9c26aa0d | 674 | request = get_rndis_request(dev, REMOTE_NDIS_HALT_MSG, |
0120ee0d | 675 | RNDIS_MESSAGE_SIZE(struct rndis_halt_request)); |
fceaf24a | 676 | if (!request) |
fceaf24a | 677 | goto Cleanup; |
fceaf24a | 678 | |
454f18a9 | 679 | /* Setup the rndis set */ |
a388eb17 HZ |
680 | halt = &request->request_msg.msg.halt_req; |
681 | halt->req_id = atomic_inc_return(&dev->new_req_id); | |
fceaf24a | 682 | |
454f18a9 | 683 | /* Ignore return since this msg is optional. */ |
9c26aa0d | 684 | rndis_filter_send_request(dev, request); |
fceaf24a | 685 | |
c2a4efdd | 686 | dev->state = RNDIS_DEV_UNINITIALIZED; |
fceaf24a HJ |
687 | |
688 | Cleanup: | |
689 | if (request) | |
9c26aa0d | 690 | put_rndis_request(dev, request); |
fceaf24a HJ |
691 | return; |
692 | } | |
693 | ||
9c26aa0d | 694 | static int rndis_filter_open_device(struct rndis_device *dev) |
fceaf24a | 695 | { |
0120ee0d | 696 | int ret; |
fceaf24a | 697 | |
c2a4efdd | 698 | if (dev->state != RNDIS_DEV_INITIALIZED) |
fceaf24a HJ |
699 | return 0; |
700 | ||
9c26aa0d | 701 | ret = rndis_filter_set_packet_filter(dev, |
0120ee0d | 702 | NDIS_PACKET_TYPE_BROADCAST | |
95beae90 | 703 | NDIS_PACKET_TYPE_ALL_MULTICAST | |
0120ee0d | 704 | NDIS_PACKET_TYPE_DIRECTED); |
fceaf24a | 705 | if (ret == 0) |
c2a4efdd | 706 | dev->state = RNDIS_DEV_DATAINITIALIZED; |
fceaf24a | 707 | |
fceaf24a HJ |
708 | return ret; |
709 | } | |
710 | ||
9c26aa0d | 711 | static int rndis_filter_close_device(struct rndis_device *dev) |
fceaf24a HJ |
712 | { |
713 | int ret; | |
714 | ||
c2a4efdd | 715 | if (dev->state != RNDIS_DEV_DATAINITIALIZED) |
fceaf24a HJ |
716 | return 0; |
717 | ||
9c26aa0d | 718 | ret = rndis_filter_set_packet_filter(dev, 0); |
fceaf24a | 719 | if (ret == 0) |
c2a4efdd | 720 | dev->state = RNDIS_DEV_INITIALIZED; |
fceaf24a | 721 | |
fceaf24a HJ |
722 | return ret; |
723 | } | |
724 | ||
10f5a6db | 725 | int rndis_filte_device_add(struct hv_device *dev, |
c2a4efdd | 726 | void *additional_info) |
fceaf24a HJ |
727 | { |
728 | int ret; | |
ce9ea4cf | 729 | struct netvsc_device *netDevice; |
e681b954 | 730 | struct rndis_device *rndisDevice; |
c2a4efdd | 731 | struct netvsc_device_info *deviceInfo = additional_info; |
fceaf24a | 732 | |
9c26aa0d | 733 | rndisDevice = get_rndis_device(); |
83c720ea | 734 | if (!rndisDevice) |
fceaf24a | 735 | return -1; |
fceaf24a | 736 | |
0120ee0d GKH |
737 | /* |
738 | * Let the inner driver handle this first to create the netvsc channel | |
739 | * NOTE! Once the channel is created, we may get a receive callback | |
740 | * (RndisFilterOnReceive()) before this call is completed | |
741 | */ | |
ce5bf661 | 742 | ret = netvsc_device_add(dev, additional_info); |
0120ee0d GKH |
743 | if (ret != 0) { |
744 | kfree(rndisDevice); | |
fceaf24a HJ |
745 | return ret; |
746 | } | |
747 | ||
454f18a9 BP |
748 | |
749 | /* Initialize the rndis device */ | |
ca623ad3 | 750 | netDevice = dev->ext; |
fceaf24a | 751 | |
53d21fdb | 752 | netDevice->extension = rndisDevice; |
c2a4efdd | 753 | rndisDevice->net_dev = netDevice; |
fceaf24a | 754 | |
454f18a9 | 755 | /* Send the rndis initialization message */ |
9c26aa0d | 756 | ret = rndis_filter_init_device(rndisDevice); |
0120ee0d GKH |
757 | if (ret != 0) { |
758 | /* | |
759 | * TODO: If rndis init failed, we will need to shut down the | |
760 | * channel | |
761 | */ | |
fceaf24a HJ |
762 | } |
763 | ||
454f18a9 | 764 | /* Get the mac address */ |
9c26aa0d | 765 | ret = rndis_filter_query_device_mac(rndisDevice); |
0120ee0d GKH |
766 | if (ret != 0) { |
767 | /* | |
768 | * TODO: shutdown rndis device and the channel | |
769 | */ | |
fceaf24a HJ |
770 | } |
771 | ||
72a2f5bd | 772 | memcpy(deviceInfo->mac_adr, rndisDevice->hw_mac_adr, ETH_ALEN); |
fceaf24a | 773 | |
9c26aa0d | 774 | rndis_filter_query_device_link_status(rndisDevice); |
fceaf24a | 775 | |
72a2f5bd | 776 | deviceInfo->link_state = rndisDevice->link_stat; |
eb335bc4 HJ |
777 | |
778 | dev_info(&dev->device, "Device MAC %pM link state %s", | |
779 | rndisDevice->hw_mac_adr, | |
780 | ((deviceInfo->link_state) ? ("down\n") : ("up\n"))); | |
fceaf24a | 781 | |
fceaf24a HJ |
782 | return ret; |
783 | } | |
784 | ||
1405139c | 785 | int rndis_filter_device_remove(struct hv_device *dev) |
fceaf24a | 786 | { |
ca623ad3 | 787 | struct netvsc_device *net_dev = dev->ext; |
53d21fdb | 788 | struct rndis_device *rndis_dev = net_dev->extension; |
fceaf24a | 789 | |
454f18a9 | 790 | /* Halt and release the rndis device */ |
9c26aa0d | 791 | rndis_filter_halt_device(rndis_dev); |
fceaf24a | 792 | |
c2a4efdd | 793 | kfree(rndis_dev); |
53d21fdb | 794 | net_dev->extension = NULL; |
fceaf24a | 795 | |
3fae5c8f | 796 | netvsc_device_remove(dev); |
fceaf24a | 797 | |
fceaf24a HJ |
798 | return 0; |
799 | } | |
800 | ||
fceaf24a | 801 | |
9c26aa0d | 802 | int rndis_filter_open(struct hv_device *dev) |
fceaf24a | 803 | { |
ca623ad3 | 804 | struct netvsc_device *netDevice = dev->ext; |
fceaf24a | 805 | |
8a62d716 BP |
806 | if (!netDevice) |
807 | return -EINVAL; | |
808 | ||
53d21fdb | 809 | return rndis_filter_open_device(netDevice->extension); |
fceaf24a HJ |
810 | } |
811 | ||
9c26aa0d | 812 | int rndis_filter_close(struct hv_device *dev) |
fceaf24a | 813 | { |
ca623ad3 | 814 | struct netvsc_device *netDevice = dev->ext; |
fceaf24a | 815 | |
8a62d716 BP |
816 | if (!netDevice) |
817 | return -EINVAL; | |
818 | ||
53d21fdb | 819 | return rndis_filter_close_device(netDevice->extension); |
fceaf24a HJ |
820 | } |
821 | ||
0652aebc | 822 | int rndis_filter_send(struct hv_device *dev, |
c2a4efdd | 823 | struct hv_netvsc_packet *pkt) |
fceaf24a | 824 | { |
0120ee0d | 825 | int ret; |
e681b954 | 826 | struct rndis_filter_packet *filterPacket; |
9f33d054 GKH |
827 | struct rndis_message *rndisMessage; |
828 | struct rndis_packet *rndisPacket; | |
4d643114 | 829 | u32 rndisMessageSize; |
fceaf24a | 830 | |
454f18a9 | 831 | /* Add the rndis header */ |
72a2f5bd | 832 | filterPacket = (struct rndis_filter_packet *)pkt->extension; |
fceaf24a | 833 | |
e681b954 | 834 | memset(filterPacket, 0, sizeof(struct rndis_filter_packet)); |
fceaf24a | 835 | |
c2a4efdd | 836 | rndisMessage = &filterPacket->msg; |
9f33d054 | 837 | rndisMessageSize = RNDIS_MESSAGE_SIZE(struct rndis_packet); |
fceaf24a | 838 | |
a388eb17 HZ |
839 | rndisMessage->ndis_msg_type = REMOTE_NDIS_PACKET_MSG; |
840 | rndisMessage->msg_len = pkt->total_data_buflen + | |
0120ee0d | 841 | rndisMessageSize; |
fceaf24a | 842 | |
a388eb17 HZ |
843 | rndisPacket = &rndisMessage->msg.pkt; |
844 | rndisPacket->data_offset = sizeof(struct rndis_packet); | |
845 | rndisPacket->data_len = pkt->total_data_buflen; | |
fceaf24a | 846 | |
72a2f5bd | 847 | pkt->is_data_pkt = true; |
ca623ad3 HZ |
848 | pkt->page_buf[0].pfn = virt_to_phys(rndisMessage) >> PAGE_SHIFT; |
849 | pkt->page_buf[0].offset = | |
0120ee0d | 850 | (unsigned long)rndisMessage & (PAGE_SIZE-1); |
ca623ad3 | 851 | pkt->page_buf[0].len = rndisMessageSize; |
fceaf24a | 852 | |
454f18a9 | 853 | /* Save the packet send completion and context */ |
72a2f5bd | 854 | filterPacket->completion = pkt->completion.send.send_completion; |
c2a4efdd | 855 | filterPacket->completion_ctx = |
72a2f5bd | 856 | pkt->completion.send.send_completion_ctx; |
fceaf24a | 857 | |
454f18a9 | 858 | /* Use ours */ |
72a2f5bd HZ |
859 | pkt->completion.send.send_completion = rndis_filter_send_completion; |
860 | pkt->completion.send.send_completion_ctx = filterPacket; | |
fceaf24a | 861 | |
72a2f5bd | 862 | ret = rndis_filter.inner_drv.send(dev, pkt); |
0120ee0d GKH |
863 | if (ret != 0) { |
864 | /* | |
865 | * Reset the completion to originals to allow retries from | |
866 | * above | |
867 | */ | |
72a2f5bd | 868 | pkt->completion.send.send_completion = |
c2a4efdd | 869 | filterPacket->completion; |
72a2f5bd | 870 | pkt->completion.send.send_completion_ctx = |
c2a4efdd | 871 | filterPacket->completion_ctx; |
fceaf24a HJ |
872 | } |
873 | ||
fceaf24a HJ |
874 | return ret; |
875 | } | |
876 | ||
9c26aa0d | 877 | static void rndis_filter_send_completion(void *ctx) |
fceaf24a | 878 | { |
c2a4efdd | 879 | struct rndis_filter_packet *filterPacket = ctx; |
fceaf24a | 880 | |
454f18a9 | 881 | /* Pass it back to the original handler */ |
c2a4efdd | 882 | filterPacket->completion(filterPacket->completion_ctx); |
fceaf24a HJ |
883 | } |
884 | ||
885 | ||
9c26aa0d | 886 | static void rndis_filter_send_request_completion(void *ctx) |
fceaf24a | 887 | { |
454f18a9 | 888 | /* Noop */ |
fceaf24a | 889 | } |