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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 SH |
27 | #include <linux/if_ether.h> |
28 | ||
645954c5 | 29 | #include "logging.h" |
e3fe0bb6 | 30 | #include "hv_api.h" |
a82c7a2a | 31 | #include "netvsc_api.h" |
043efcc3 | 32 | #include "rndis_filter.h" |
fceaf24a | 33 | |
454f18a9 | 34 | /* Data types */ |
e681b954 | 35 | struct rndis_filter_driver_object { |
454f18a9 | 36 | /* The original driver */ |
c2a4efdd | 37 | struct netvsc_driver inner_drv; |
e681b954 | 38 | }; |
fceaf24a | 39 | |
e681b954 | 40 | enum rndis_device_state { |
fceaf24a HJ |
41 | RNDIS_DEV_UNINITIALIZED = 0, |
42 | RNDIS_DEV_INITIALIZING, | |
43 | RNDIS_DEV_INITIALIZED, | |
44 | RNDIS_DEV_DATAINITIALIZED, | |
e681b954 | 45 | }; |
fceaf24a | 46 | |
e681b954 | 47 | struct rndis_device { |
c2a4efdd | 48 | struct netvsc_device *net_dev; |
fceaf24a | 49 | |
c2a4efdd HZ |
50 | enum rndis_device_state state; |
51 | u32 link_stat; | |
52 | atomic_t new_req_id; | |
fceaf24a | 53 | |
880fb89c | 54 | spinlock_t request_lock; |
c2a4efdd | 55 | struct list_head req_list; |
fceaf24a | 56 | |
c2a4efdd | 57 | unsigned char hw_mac_adr[ETH_ALEN]; |
e681b954 | 58 | }; |
fceaf24a | 59 | |
e681b954 | 60 | struct rndis_request { |
c2a4efdd | 61 | struct list_head list_ent; |
0c3b7b2f S |
62 | int wait_condition; |
63 | wait_queue_head_t wait_event; | |
fceaf24a | 64 | |
0120ee0d GKH |
65 | /* |
66 | * FIXME: We assumed a fixed size response here. If we do ever need to | |
67 | * handle a bigger response, we can either define a max response | |
68 | * message or add a response buffer variable above this field | |
69 | */ | |
c2a4efdd | 70 | struct rndis_message response_msg; |
fceaf24a | 71 | |
454f18a9 | 72 | /* Simplify allocation by having a netvsc packet inline */ |
c2a4efdd HZ |
73 | struct hv_netvsc_packet pkt; |
74 | struct hv_page_buffer buf; | |
454f18a9 | 75 | /* FIXME: We assumed a fixed size request here. */ |
c2a4efdd | 76 | struct rndis_message request_msg; |
e681b954 | 77 | }; |
fceaf24a HJ |
78 | |
79 | ||
e681b954 | 80 | struct rndis_filter_packet { |
c2a4efdd HZ |
81 | void *completion_ctx; |
82 | void (*completion)(void *context); | |
83 | struct rndis_message msg; | |
e681b954 | 84 | }; |
fceaf24a | 85 | |
454f18a9 | 86 | |
9c26aa0d | 87 | static int rndis_filte_device_add(struct hv_device *dev, |
c2a4efdd | 88 | void *additional_info); |
454f18a9 | 89 | |
9c26aa0d | 90 | static int rndis_filter_device_remove(struct hv_device *dev); |
fceaf24a | 91 | |
9c26aa0d | 92 | static void rndis_filter_cleanup(struct hv_driver *drv); |
fceaf24a | 93 | |
9c26aa0d | 94 | static int rndis_filter_send(struct hv_device *dev, |
c2a4efdd | 95 | struct hv_netvsc_packet *pkt); |
0120ee0d | 96 | |
9c26aa0d | 97 | static void rndis_filter_send_completion(void *ctx); |
0120ee0d | 98 | |
9c26aa0d | 99 | static void rndis_filter_send_request_completion(void *ctx); |
454f18a9 BP |
100 | |
101 | ||
102 | /* The one and only */ | |
c2a4efdd | 103 | static struct rndis_filter_driver_object rndis_filter; |
fceaf24a | 104 | |
9c26aa0d | 105 | static struct rndis_device *get_rndis_device(void) |
fceaf24a | 106 | { |
e681b954 | 107 | struct rndis_device *device; |
fceaf24a | 108 | |
e681b954 | 109 | device = kzalloc(sizeof(struct rndis_device), GFP_KERNEL); |
fceaf24a | 110 | if (!device) |
fceaf24a | 111 | return NULL; |
fceaf24a | 112 | |
880fb89c | 113 | spin_lock_init(&device->request_lock); |
fceaf24a | 114 | |
c2a4efdd | 115 | INIT_LIST_HEAD(&device->req_list); |
fceaf24a | 116 | |
c2a4efdd | 117 | device->state = RNDIS_DEV_UNINITIALIZED; |
fceaf24a HJ |
118 | |
119 | return device; | |
120 | } | |
121 | ||
9c26aa0d | 122 | static struct rndis_request *get_rndis_request(struct rndis_device *dev, |
c2a4efdd HZ |
123 | u32 msg_type, |
124 | u32 msg_len) | |
fceaf24a | 125 | { |
e681b954 | 126 | struct rndis_request *request; |
c2a4efdd | 127 | struct rndis_message *rndis_msg; |
9f33d054 | 128 | struct rndis_set_request *set; |
880fb89c | 129 | unsigned long flags; |
fceaf24a | 130 | |
e681b954 | 131 | request = kzalloc(sizeof(struct rndis_request), GFP_KERNEL); |
fceaf24a | 132 | if (!request) |
fceaf24a | 133 | return NULL; |
fceaf24a | 134 | |
0c3b7b2f | 135 | init_waitqueue_head(&request->wait_event); |
fceaf24a | 136 | |
c2a4efdd | 137 | rndis_msg = &request->request_msg; |
a388eb17 HZ |
138 | rndis_msg->ndis_msg_type = msg_type; |
139 | rndis_msg->msg_len = msg_len; | |
fceaf24a | 140 | |
0120ee0d GKH |
141 | /* |
142 | * Set the request id. This field is always after the rndis header for | |
143 | * request/response packet types so we just used the SetRequest as a | |
144 | * template | |
145 | */ | |
a388eb17 HZ |
146 | set = &rndis_msg->msg.set_req; |
147 | set->req_id = atomic_inc_return(&dev->new_req_id); | |
fceaf24a | 148 | |
454f18a9 | 149 | /* Add to the request list */ |
c2a4efdd HZ |
150 | spin_lock_irqsave(&dev->request_lock, flags); |
151 | list_add_tail(&request->list_ent, &dev->req_list); | |
152 | spin_unlock_irqrestore(&dev->request_lock, flags); | |
fceaf24a HJ |
153 | |
154 | return request; | |
155 | } | |
156 | ||
9c26aa0d | 157 | static void put_rndis_request(struct rndis_device *dev, |
c2a4efdd | 158 | struct rndis_request *req) |
fceaf24a | 159 | { |
880fb89c GKH |
160 | unsigned long flags; |
161 | ||
c2a4efdd HZ |
162 | spin_lock_irqsave(&dev->request_lock, flags); |
163 | list_del(&req->list_ent); | |
164 | spin_unlock_irqrestore(&dev->request_lock, flags); | |
fceaf24a | 165 | |
c2a4efdd | 166 | kfree(req); |
fceaf24a HJ |
167 | } |
168 | ||
9c26aa0d | 169 | static void dump_rndis_message(struct rndis_message *rndis_msg) |
fceaf24a | 170 | { |
a388eb17 | 171 | switch (rndis_msg->ndis_msg_type) { |
fceaf24a | 172 | case REMOTE_NDIS_PACKET_MSG: |
0120ee0d GKH |
173 | DPRINT_DBG(NETVSC, "REMOTE_NDIS_PACKET_MSG (len %u, " |
174 | "data offset %u data len %u, # oob %u, " | |
175 | "oob offset %u, oob len %u, pkt offset %u, " | |
176 | "pkt len %u", | |
a388eb17 HZ |
177 | rndis_msg->msg_len, |
178 | rndis_msg->msg.pkt.data_offset, | |
179 | rndis_msg->msg.pkt.data_len, | |
180 | rndis_msg->msg.pkt.num_oob_data_elements, | |
181 | rndis_msg->msg.pkt.oob_data_offset, | |
182 | rndis_msg->msg.pkt.oob_data_len, | |
183 | rndis_msg->msg.pkt.per_pkt_info_offset, | |
184 | rndis_msg->msg.pkt.per_pkt_info_len); | |
fceaf24a HJ |
185 | break; |
186 | ||
187 | case REMOTE_NDIS_INITIALIZE_CMPLT: | |
0120ee0d GKH |
188 | DPRINT_DBG(NETVSC, "REMOTE_NDIS_INITIALIZE_CMPLT " |
189 | "(len %u, id 0x%x, status 0x%x, major %d, minor %d, " | |
190 | "device flags %d, max xfer size 0x%x, max pkts %u, " | |
191 | "pkt aligned %u)", | |
a388eb17 HZ |
192 | rndis_msg->msg_len, |
193 | rndis_msg->msg.init_complete.req_id, | |
194 | rndis_msg->msg.init_complete.status, | |
195 | rndis_msg->msg.init_complete.major_ver, | |
196 | rndis_msg->msg.init_complete.minor_ver, | |
197 | rndis_msg->msg.init_complete.dev_flags, | |
198 | rndis_msg->msg.init_complete.max_xfer_size, | |
199 | rndis_msg->msg.init_complete. | |
200 | max_pkt_per_msg, | |
201 | rndis_msg->msg.init_complete. | |
202 | pkt_alignment_factor); | |
fceaf24a HJ |
203 | break; |
204 | ||
205 | case REMOTE_NDIS_QUERY_CMPLT: | |
0120ee0d GKH |
206 | DPRINT_DBG(NETVSC, "REMOTE_NDIS_QUERY_CMPLT " |
207 | "(len %u, id 0x%x, status 0x%x, buf len %u, " | |
208 | "buf offset %u)", | |
a388eb17 HZ |
209 | rndis_msg->msg_len, |
210 | rndis_msg->msg.query_complete.req_id, | |
211 | rndis_msg->msg.query_complete.status, | |
212 | rndis_msg->msg.query_complete. | |
213 | info_buflen, | |
214 | rndis_msg->msg.query_complete. | |
215 | info_buf_offset); | |
fceaf24a HJ |
216 | break; |
217 | ||
218 | case REMOTE_NDIS_SET_CMPLT: | |
0120ee0d GKH |
219 | DPRINT_DBG(NETVSC, |
220 | "REMOTE_NDIS_SET_CMPLT (len %u, id 0x%x, status 0x%x)", | |
a388eb17 HZ |
221 | rndis_msg->msg_len, |
222 | rndis_msg->msg.set_complete.req_id, | |
223 | rndis_msg->msg.set_complete.status); | |
fceaf24a HJ |
224 | break; |
225 | ||
226 | case REMOTE_NDIS_INDICATE_STATUS_MSG: | |
0120ee0d GKH |
227 | DPRINT_DBG(NETVSC, "REMOTE_NDIS_INDICATE_STATUS_MSG " |
228 | "(len %u, status 0x%x, buf len %u, buf offset %u)", | |
a388eb17 HZ |
229 | rndis_msg->msg_len, |
230 | rndis_msg->msg.indicate_status.status, | |
231 | rndis_msg->msg.indicate_status.status_buflen, | |
232 | rndis_msg->msg.indicate_status.status_buf_offset); | |
fceaf24a HJ |
233 | break; |
234 | ||
235 | default: | |
236 | DPRINT_DBG(NETVSC, "0x%x (len %u)", | |
a388eb17 HZ |
237 | rndis_msg->ndis_msg_type, |
238 | rndis_msg->msg_len); | |
fceaf24a HJ |
239 | break; |
240 | } | |
241 | } | |
242 | ||
9c26aa0d | 243 | static int rndis_filter_send_request(struct rndis_device *dev, |
c2a4efdd | 244 | struct rndis_request *req) |
fceaf24a | 245 | { |
0120ee0d | 246 | int ret; |
4193d4f4 | 247 | struct hv_netvsc_packet *packet; |
fceaf24a | 248 | |
454f18a9 | 249 | /* Setup the packet to send it */ |
c2a4efdd | 250 | packet = &req->pkt; |
fceaf24a | 251 | |
72a2f5bd | 252 | packet->is_data_pkt = false; |
a388eb17 | 253 | packet->total_data_buflen = req->request_msg.msg_len; |
72a2f5bd | 254 | packet->page_buf_cnt = 1; |
fceaf24a | 255 | |
ca623ad3 | 256 | packet->page_buf[0].pfn = virt_to_phys(&req->request_msg) >> |
0120ee0d | 257 | PAGE_SHIFT; |
ca623ad3 HZ |
258 | packet->page_buf[0].len = req->request_msg.msg_len; |
259 | packet->page_buf[0].offset = | |
c2a4efdd | 260 | (unsigned long)&req->request_msg & (PAGE_SIZE - 1); |
fceaf24a | 261 | |
72a2f5bd HZ |
262 | packet->completion.send.send_completion_ctx = req;/* packet; */ |
263 | packet->completion.send.send_completion = | |
9c26aa0d | 264 | rndis_filter_send_request_completion; |
72a2f5bd | 265 | packet->completion.send.send_completion_tid = (unsigned long)dev; |
fceaf24a | 266 | |
53d21fdb | 267 | ret = rndis_filter.inner_drv.send(dev->net_dev->dev, packet); |
fceaf24a HJ |
268 | return ret; |
269 | } | |
270 | ||
9c26aa0d | 271 | static void rndis_filter_receive_response(struct rndis_device *dev, |
c2a4efdd | 272 | struct rndis_message *resp) |
fceaf24a | 273 | { |
e681b954 | 274 | struct rndis_request *request = NULL; |
0e727613 | 275 | bool found = false; |
880fb89c | 276 | unsigned long flags; |
fceaf24a | 277 | |
c2a4efdd HZ |
278 | spin_lock_irqsave(&dev->request_lock, flags); |
279 | list_for_each_entry(request, &dev->req_list, list_ent) { | |
0120ee0d GKH |
280 | /* |
281 | * All request/response message contains RequestId as the 1st | |
282 | * field | |
283 | */ | |
a388eb17 HZ |
284 | if (request->request_msg.msg.init_req.req_id |
285 | == resp->msg.init_complete.req_id) { | |
0e727613 | 286 | found = true; |
fceaf24a HJ |
287 | break; |
288 | } | |
289 | } | |
c2a4efdd | 290 | spin_unlock_irqrestore(&dev->request_lock, flags); |
fceaf24a | 291 | |
0120ee0d | 292 | if (found) { |
a388eb17 | 293 | if (resp->msg_len <= sizeof(struct rndis_message)) { |
c2a4efdd | 294 | memcpy(&request->response_msg, resp, |
a388eb17 | 295 | resp->msg_len); |
0120ee0d GKH |
296 | } else { |
297 | DPRINT_ERR(NETVSC, "rndis response buffer overflow " | |
298 | "detected (size %u max %zu)", | |
a388eb17 | 299 | resp->msg_len, |
0120ee0d GKH |
300 | sizeof(struct rndis_filter_packet)); |
301 | ||
a388eb17 | 302 | if (resp->ndis_msg_type == |
0120ee0d GKH |
303 | REMOTE_NDIS_RESET_CMPLT) { |
304 | /* does not have a request id field */ | |
a388eb17 HZ |
305 | request->response_msg.msg.reset_complete. |
306 | status = STATUS_BUFFER_OVERFLOW; | |
0120ee0d | 307 | } else { |
a388eb17 HZ |
308 | request->response_msg.msg. |
309 | init_complete.status = | |
c2a4efdd | 310 | STATUS_BUFFER_OVERFLOW; |
fceaf24a HJ |
311 | } |
312 | } | |
313 | ||
0c3b7b2f S |
314 | request->wait_condition = 1; |
315 | wake_up(&request->wait_event); | |
0120ee0d GKH |
316 | } else { |
317 | DPRINT_ERR(NETVSC, "no rndis request found for this response " | |
318 | "(id 0x%x res type 0x%x)", | |
a388eb17 HZ |
319 | resp->msg.init_complete.req_id, |
320 | resp->ndis_msg_type); | |
fceaf24a | 321 | } |
fceaf24a HJ |
322 | } |
323 | ||
9c26aa0d | 324 | static void rndis_filter_receive_indicate_status(struct rndis_device *dev, |
c2a4efdd | 325 | struct rndis_message *resp) |
fceaf24a | 326 | { |
0120ee0d | 327 | struct rndis_indicate_status *indicate = |
a388eb17 | 328 | &resp->msg.indicate_status; |
fceaf24a | 329 | |
a388eb17 | 330 | if (indicate->status == RNDIS_STATUS_MEDIA_CONNECT) { |
72a2f5bd | 331 | rndis_filter.inner_drv.link_status_change( |
53d21fdb | 332 | dev->net_dev->dev, 1); |
a388eb17 | 333 | } else if (indicate->status == RNDIS_STATUS_MEDIA_DISCONNECT) { |
72a2f5bd | 334 | rndis_filter.inner_drv.link_status_change( |
53d21fdb | 335 | dev->net_dev->dev, 0); |
0120ee0d GKH |
336 | } else { |
337 | /* | |
338 | * TODO: | |
339 | */ | |
fceaf24a HJ |
340 | } |
341 | } | |
342 | ||
9c26aa0d | 343 | static void rndis_filter_receive_data(struct rndis_device *dev, |
c2a4efdd HZ |
344 | struct rndis_message *msg, |
345 | struct hv_netvsc_packet *pkt) | |
fceaf24a | 346 | { |
c2a4efdd HZ |
347 | struct rndis_packet *rndis_pkt; |
348 | u32 data_offset; | |
fceaf24a | 349 | |
a388eb17 | 350 | rndis_pkt = &msg->msg.pkt; |
fceaf24a | 351 | |
0120ee0d GKH |
352 | /* |
353 | * FIXME: Handle multiple rndis pkt msgs that maybe enclosed in this | |
354 | * netvsc packet (ie TotalDataBufferLength != MessageLength) | |
355 | */ | |
fceaf24a | 356 | |
454f18a9 | 357 | /* Remove the rndis header and pass it back up the stack */ |
a388eb17 | 358 | data_offset = RNDIS_HEADER_SIZE + rndis_pkt->data_offset; |
fceaf24a | 359 | |
72a2f5bd | 360 | pkt->total_data_buflen -= data_offset; |
ca623ad3 HZ |
361 | pkt->page_buf[0].offset += data_offset; |
362 | pkt->page_buf[0].len -= data_offset; | |
fceaf24a | 363 | |
72a2f5bd | 364 | pkt->is_data_pkt = true; |
fceaf24a | 365 | |
53d21fdb | 366 | rndis_filter.inner_drv.recv_cb(dev->net_dev->dev, |
c2a4efdd | 367 | pkt); |
fceaf24a HJ |
368 | } |
369 | ||
9c26aa0d | 370 | static int rndis_filter_receive(struct hv_device *dev, |
c2a4efdd | 371 | struct hv_netvsc_packet *pkt) |
fceaf24a | 372 | { |
ca623ad3 | 373 | struct netvsc_device *net_dev = dev->ext; |
c2a4efdd HZ |
374 | struct rndis_device *rndis_dev; |
375 | struct rndis_message rndis_msg; | |
376 | struct rndis_message *rndis_hdr; | |
fceaf24a | 377 | |
c2a4efdd | 378 | if (!net_dev) |
8a62d716 BP |
379 | return -EINVAL; |
380 | ||
454f18a9 | 381 | /* Make sure the rndis device state is initialized */ |
53d21fdb | 382 | if (!net_dev->extension) { |
0120ee0d GKH |
383 | DPRINT_ERR(NETVSC, "got rndis message but no rndis device..." |
384 | "dropping this message!"); | |
fceaf24a HJ |
385 | return -1; |
386 | } | |
387 | ||
53d21fdb | 388 | rndis_dev = (struct rndis_device *)net_dev->extension; |
c2a4efdd | 389 | if (rndis_dev->state == RNDIS_DEV_UNINITIALIZED) { |
0120ee0d GKH |
390 | DPRINT_ERR(NETVSC, "got rndis message but rndis device " |
391 | "uninitialized...dropping this message!"); | |
fceaf24a HJ |
392 | return -1; |
393 | } | |
394 | ||
c2a4efdd | 395 | rndis_hdr = (struct rndis_message *)kmap_atomic( |
ca623ad3 | 396 | pfn_to_page(pkt->page_buf[0].pfn), KM_IRQ0); |
fceaf24a | 397 | |
c2a4efdd | 398 | rndis_hdr = (void *)((unsigned long)rndis_hdr + |
ca623ad3 | 399 | pkt->page_buf[0].offset); |
fceaf24a | 400 | |
454f18a9 | 401 | /* Make sure we got a valid rndis message */ |
0120ee0d GKH |
402 | /* |
403 | * FIXME: There seems to be a bug in set completion msg where its | |
404 | * MessageLength is 16 bytes but the ByteCount field in the xfer page | |
405 | * range shows 52 bytes | |
406 | * */ | |
fceaf24a | 407 | #if 0 |
a388eb17 | 408 | if (pkt->total_data_buflen != rndis_hdr->msg_len) { |
ca623ad3 | 409 | kunmap_atomic(rndis_hdr - pkt->page_buf[0].offset, |
0120ee0d GKH |
410 | KM_IRQ0); |
411 | ||
412 | DPRINT_ERR(NETVSC, "invalid rndis message? (expected %u " | |
413 | "bytes got %u)...dropping this message!", | |
a388eb17 | 414 | rndis_hdr->msg_len, |
72a2f5bd | 415 | pkt->total_data_buflen); |
fceaf24a HJ |
416 | return -1; |
417 | } | |
418 | #endif | |
419 | ||
a388eb17 HZ |
420 | if ((rndis_hdr->ndis_msg_type != REMOTE_NDIS_PACKET_MSG) && |
421 | (rndis_hdr->msg_len > sizeof(struct rndis_message))) { | |
0120ee0d GKH |
422 | DPRINT_ERR(NETVSC, "incoming rndis message buffer overflow " |
423 | "detected (got %u, max %zu)...marking it an error!", | |
a388eb17 | 424 | rndis_hdr->msg_len, |
0120ee0d | 425 | sizeof(struct rndis_message)); |
fceaf24a HJ |
426 | } |
427 | ||
c2a4efdd | 428 | memcpy(&rndis_msg, rndis_hdr, |
a388eb17 | 429 | (rndis_hdr->msg_len > sizeof(struct rndis_message)) ? |
0120ee0d | 430 | sizeof(struct rndis_message) : |
a388eb17 | 431 | rndis_hdr->msg_len); |
fceaf24a | 432 | |
ca623ad3 | 433 | kunmap_atomic(rndis_hdr - pkt->page_buf[0].offset, KM_IRQ0); |
fceaf24a | 434 | |
9c26aa0d | 435 | dump_rndis_message(&rndis_msg); |
fceaf24a | 436 | |
a388eb17 | 437 | switch (rndis_msg.ndis_msg_type) { |
fceaf24a | 438 | case REMOTE_NDIS_PACKET_MSG: |
0120ee0d | 439 | /* data msg */ |
9c26aa0d | 440 | rndis_filter_receive_data(rndis_dev, &rndis_msg, pkt); |
fceaf24a HJ |
441 | break; |
442 | ||
fceaf24a HJ |
443 | case REMOTE_NDIS_INITIALIZE_CMPLT: |
444 | case REMOTE_NDIS_QUERY_CMPLT: | |
445 | case REMOTE_NDIS_SET_CMPLT: | |
0120ee0d | 446 | /* completion msgs */ |
9c26aa0d | 447 | rndis_filter_receive_response(rndis_dev, &rndis_msg); |
fceaf24a HJ |
448 | break; |
449 | ||
fceaf24a | 450 | case REMOTE_NDIS_INDICATE_STATUS_MSG: |
0120ee0d | 451 | /* notification msgs */ |
9c26aa0d | 452 | rndis_filter_receive_indicate_status(rndis_dev, &rndis_msg); |
fceaf24a HJ |
453 | break; |
454 | default: | |
0120ee0d | 455 | DPRINT_ERR(NETVSC, "unhandled rndis message (type %u len %u)", |
a388eb17 HZ |
456 | rndis_msg.ndis_msg_type, |
457 | rndis_msg.msg_len); | |
fceaf24a HJ |
458 | break; |
459 | } | |
460 | ||
fceaf24a HJ |
461 | return 0; |
462 | } | |
463 | ||
9c26aa0d | 464 | static int rndis_filter_query_device(struct rndis_device *dev, u32 oid, |
c2a4efdd | 465 | void *result, u32 *result_size) |
fceaf24a | 466 | { |
e681b954 | 467 | struct rndis_request *request; |
c2a4efdd | 468 | u32 inresult_size = *result_size; |
9f33d054 | 469 | struct rndis_query_request *query; |
c2a4efdd | 470 | struct rndis_query_complete *query_complete; |
0120ee0d | 471 | int ret = 0; |
fceaf24a | 472 | |
c2a4efdd | 473 | if (!result) |
8a62d716 | 474 | return -EINVAL; |
fceaf24a | 475 | |
c2a4efdd | 476 | *result_size = 0; |
9c26aa0d | 477 | request = get_rndis_request(dev, REMOTE_NDIS_QUERY_MSG, |
0120ee0d GKH |
478 | RNDIS_MESSAGE_SIZE(struct rndis_query_request)); |
479 | if (!request) { | |
fceaf24a HJ |
480 | ret = -1; |
481 | goto Cleanup; | |
482 | } | |
483 | ||
454f18a9 | 484 | /* Setup the rndis query */ |
a388eb17 HZ |
485 | query = &request->request_msg.msg.query_req; |
486 | query->oid = oid; | |
487 | query->info_buf_offset = sizeof(struct rndis_query_request); | |
488 | query->info_buflen = 0; | |
489 | query->dev_vc_handle = 0; | |
fceaf24a | 490 | |
0c3b7b2f | 491 | request->wait_condition = 0; |
9c26aa0d | 492 | ret = rndis_filter_send_request(dev, request); |
fceaf24a | 493 | if (ret != 0) |
fceaf24a | 494 | goto Cleanup; |
fceaf24a | 495 | |
0c3b7b2f S |
496 | wait_event_timeout(request->wait_event, request->wait_condition, |
497 | msecs_to_jiffies(1000)); | |
498 | if (request->wait_condition == 0) { | |
499 | ret = -ETIMEDOUT; | |
500 | goto Cleanup; | |
501 | } | |
fceaf24a | 502 | |
454f18a9 | 503 | /* Copy the response back */ |
a388eb17 | 504 | query_complete = &request->response_msg.msg.query_complete; |
fceaf24a | 505 | |
a388eb17 | 506 | if (query_complete->info_buflen > inresult_size) { |
fceaf24a HJ |
507 | ret = -1; |
508 | goto Cleanup; | |
509 | } | |
510 | ||
c2a4efdd HZ |
511 | memcpy(result, |
512 | (void *)((unsigned long)query_complete + | |
a388eb17 HZ |
513 | query_complete->info_buf_offset), |
514 | query_complete->info_buflen); | |
fceaf24a | 515 | |
a388eb17 | 516 | *result_size = query_complete->info_buflen; |
fceaf24a HJ |
517 | |
518 | Cleanup: | |
519 | if (request) | |
9c26aa0d | 520 | put_rndis_request(dev, request); |
fceaf24a HJ |
521 | |
522 | return ret; | |
523 | } | |
524 | ||
9c26aa0d | 525 | static int rndis_filter_query_device_mac(struct rndis_device *dev) |
fceaf24a | 526 | { |
9f8bd8ba | 527 | u32 size = ETH_ALEN; |
fceaf24a | 528 | |
9c26aa0d | 529 | return rndis_filter_query_device(dev, |
0120ee0d | 530 | RNDIS_OID_802_3_PERMANENT_ADDRESS, |
c2a4efdd | 531 | dev->hw_mac_adr, &size); |
fceaf24a HJ |
532 | } |
533 | ||
9c26aa0d | 534 | static int rndis_filter_query_device_link_status(struct rndis_device *dev) |
fceaf24a | 535 | { |
0120ee0d | 536 | u32 size = sizeof(u32); |
fceaf24a | 537 | |
9c26aa0d | 538 | return rndis_filter_query_device(dev, |
0120ee0d | 539 | RNDIS_OID_GEN_MEDIA_CONNECT_STATUS, |
c2a4efdd | 540 | &dev->link_stat, &size); |
fceaf24a HJ |
541 | } |
542 | ||
9c26aa0d | 543 | static int rndis_filter_set_packet_filter(struct rndis_device *dev, |
c2a4efdd | 544 | u32 new_filter) |
fceaf24a | 545 | { |
e681b954 | 546 | struct rndis_request *request; |
9f33d054 | 547 | struct rndis_set_request *set; |
c2a4efdd | 548 | struct rndis_set_complete *set_complete; |
4d643114 | 549 | u32 status; |
fceaf24a HJ |
550 | int ret; |
551 | ||
9c26aa0d | 552 | request = get_rndis_request(dev, REMOTE_NDIS_SET_MSG, |
0120ee0d GKH |
553 | RNDIS_MESSAGE_SIZE(struct rndis_set_request) + |
554 | sizeof(u32)); | |
555 | if (!request) { | |
fceaf24a HJ |
556 | ret = -1; |
557 | goto Cleanup; | |
558 | } | |
559 | ||
454f18a9 | 560 | /* Setup the rndis set */ |
a388eb17 HZ |
561 | set = &request->request_msg.msg.set_req; |
562 | set->oid = RNDIS_OID_GEN_CURRENT_PACKET_FILTER; | |
563 | set->info_buflen = sizeof(u32); | |
564 | set->info_buf_offset = sizeof(struct rndis_set_request); | |
fceaf24a | 565 | |
0120ee0d | 566 | memcpy((void *)(unsigned long)set + sizeof(struct rndis_set_request), |
c2a4efdd | 567 | &new_filter, sizeof(u32)); |
fceaf24a | 568 | |
0c3b7b2f | 569 | request->wait_condition = 0; |
9c26aa0d | 570 | ret = rndis_filter_send_request(dev, request); |
fceaf24a | 571 | if (ret != 0) |
fceaf24a | 572 | goto Cleanup; |
fceaf24a | 573 | |
0c3b7b2f S |
574 | wait_event_timeout(request->wait_event, request->wait_condition, |
575 | msecs_to_jiffies(2000)); | |
576 | if (request->wait_condition == 0) { | |
fceaf24a HJ |
577 | ret = -1; |
578 | DPRINT_ERR(NETVSC, "timeout before we got a set response..."); | |
0120ee0d GKH |
579 | /* |
580 | * We cant deallocate the request since we may still receive a | |
581 | * send completion for it. | |
582 | */ | |
fceaf24a | 583 | goto Exit; |
0120ee0d | 584 | } else { |
fceaf24a | 585 | if (ret > 0) |
fceaf24a | 586 | ret = 0; |
a388eb17 HZ |
587 | set_complete = &request->response_msg.msg.set_complete; |
588 | status = set_complete->status; | |
fceaf24a HJ |
589 | } |
590 | ||
591 | Cleanup: | |
592 | if (request) | |
9c26aa0d | 593 | put_rndis_request(dev, request); |
fceaf24a | 594 | Exit: |
fceaf24a HJ |
595 | return ret; |
596 | } | |
597 | ||
9c26aa0d | 598 | int rndis_filter_init(struct netvsc_driver *drv) |
fceaf24a | 599 | { |
72a2f5bd | 600 | drv->req_ext_size = sizeof(struct rndis_filter_packet); |
fceaf24a | 601 | |
454f18a9 | 602 | /* Driver->Context = rndisDriver; */ |
fceaf24a | 603 | |
c2a4efdd | 604 | memset(&rndis_filter, 0, sizeof(struct rndis_filter_driver_object)); |
fceaf24a HJ |
605 | |
606 | /*rndisDriver->Driver = Driver; | |
607 | ||
608 | ASSERT(Driver->OnLinkStatusChanged); | |
609 | rndisDriver->OnLinkStatusChanged = Driver->OnLinkStatusChanged;*/ | |
610 | ||
454f18a9 | 611 | /* Save the original dispatch handlers before we override it */ |
ca623ad3 HZ |
612 | rndis_filter.inner_drv.base.dev_add = drv->base.dev_add; |
613 | rndis_filter.inner_drv.base.dev_rm = | |
614 | drv->base.dev_rm; | |
615 | rndis_filter.inner_drv.base.cleanup = drv->base.cleanup; | |
fceaf24a | 616 | |
72a2f5bd HZ |
617 | rndis_filter.inner_drv.send = drv->send; |
618 | rndis_filter.inner_drv.recv_cb = drv->recv_cb; | |
619 | rndis_filter.inner_drv.link_status_change = | |
620 | drv->link_status_change; | |
fceaf24a | 621 | |
454f18a9 | 622 | /* Override */ |
ca623ad3 HZ |
623 | drv->base.dev_add = rndis_filte_device_add; |
624 | drv->base.dev_rm = rndis_filter_device_remove; | |
625 | drv->base.cleanup = rndis_filter_cleanup; | |
72a2f5bd | 626 | drv->send = rndis_filter_send; |
72a2f5bd | 627 | drv->recv_cb = rndis_filter_receive; |
fceaf24a | 628 | |
fceaf24a HJ |
629 | return 0; |
630 | } | |
631 | ||
9c26aa0d | 632 | static int rndis_filter_init_device(struct rndis_device *dev) |
fceaf24a | 633 | { |
e681b954 | 634 | struct rndis_request *request; |
9f33d054 | 635 | struct rndis_initialize_request *init; |
c2a4efdd | 636 | struct rndis_initialize_complete *init_complete; |
4d643114 | 637 | u32 status; |
fceaf24a HJ |
638 | int ret; |
639 | ||
9c26aa0d | 640 | request = get_rndis_request(dev, REMOTE_NDIS_INITIALIZE_MSG, |
0120ee0d GKH |
641 | RNDIS_MESSAGE_SIZE(struct rndis_initialize_request)); |
642 | if (!request) { | |
fceaf24a HJ |
643 | ret = -1; |
644 | goto Cleanup; | |
645 | } | |
646 | ||
454f18a9 | 647 | /* Setup the rndis set */ |
a388eb17 HZ |
648 | init = &request->request_msg.msg.init_req; |
649 | init->major_ver = RNDIS_MAJOR_VERSION; | |
650 | init->minor_ver = RNDIS_MINOR_VERSION; | |
0120ee0d | 651 | /* FIXME: Use 1536 - rounded ethernet frame size */ |
a388eb17 | 652 | init->max_xfer_size = 2048; |
fceaf24a | 653 | |
c2a4efdd | 654 | dev->state = RNDIS_DEV_INITIALIZING; |
fceaf24a | 655 | |
0c3b7b2f | 656 | request->wait_condition = 0; |
9c26aa0d | 657 | ret = rndis_filter_send_request(dev, request); |
0120ee0d | 658 | if (ret != 0) { |
c2a4efdd | 659 | dev->state = RNDIS_DEV_UNINITIALIZED; |
fceaf24a HJ |
660 | goto Cleanup; |
661 | } | |
662 | ||
0c3b7b2f S |
663 | |
664 | wait_event_timeout(request->wait_event, request->wait_condition, | |
665 | msecs_to_jiffies(1000)); | |
666 | if (request->wait_condition == 0) { | |
667 | ret = -ETIMEDOUT; | |
668 | goto Cleanup; | |
669 | } | |
fceaf24a | 670 | |
a388eb17 HZ |
671 | init_complete = &request->response_msg.msg.init_complete; |
672 | status = init_complete->status; | |
0120ee0d | 673 | if (status == RNDIS_STATUS_SUCCESS) { |
c2a4efdd | 674 | dev->state = RNDIS_DEV_INITIALIZED; |
fceaf24a | 675 | ret = 0; |
0120ee0d | 676 | } else { |
c2a4efdd | 677 | dev->state = RNDIS_DEV_UNINITIALIZED; |
fceaf24a HJ |
678 | ret = -1; |
679 | } | |
680 | ||
681 | Cleanup: | |
682 | if (request) | |
9c26aa0d | 683 | put_rndis_request(dev, request); |
fceaf24a HJ |
684 | |
685 | return ret; | |
686 | } | |
687 | ||
9c26aa0d | 688 | static void rndis_filter_halt_device(struct rndis_device *dev) |
fceaf24a | 689 | { |
e681b954 | 690 | struct rndis_request *request; |
9f33d054 | 691 | struct rndis_halt_request *halt; |
fceaf24a | 692 | |
454f18a9 | 693 | /* Attempt to do a rndis device halt */ |
9c26aa0d | 694 | request = get_rndis_request(dev, REMOTE_NDIS_HALT_MSG, |
0120ee0d | 695 | RNDIS_MESSAGE_SIZE(struct rndis_halt_request)); |
fceaf24a | 696 | if (!request) |
fceaf24a | 697 | goto Cleanup; |
fceaf24a | 698 | |
454f18a9 | 699 | /* Setup the rndis set */ |
a388eb17 HZ |
700 | halt = &request->request_msg.msg.halt_req; |
701 | halt->req_id = atomic_inc_return(&dev->new_req_id); | |
fceaf24a | 702 | |
454f18a9 | 703 | /* Ignore return since this msg is optional. */ |
9c26aa0d | 704 | rndis_filter_send_request(dev, request); |
fceaf24a | 705 | |
c2a4efdd | 706 | dev->state = RNDIS_DEV_UNINITIALIZED; |
fceaf24a HJ |
707 | |
708 | Cleanup: | |
709 | if (request) | |
9c26aa0d | 710 | put_rndis_request(dev, request); |
fceaf24a HJ |
711 | return; |
712 | } | |
713 | ||
9c26aa0d | 714 | static int rndis_filter_open_device(struct rndis_device *dev) |
fceaf24a | 715 | { |
0120ee0d | 716 | int ret; |
fceaf24a | 717 | |
c2a4efdd | 718 | if (dev->state != RNDIS_DEV_INITIALIZED) |
fceaf24a HJ |
719 | return 0; |
720 | ||
9c26aa0d | 721 | ret = rndis_filter_set_packet_filter(dev, |
0120ee0d | 722 | NDIS_PACKET_TYPE_BROADCAST | |
95beae90 | 723 | NDIS_PACKET_TYPE_ALL_MULTICAST | |
0120ee0d | 724 | NDIS_PACKET_TYPE_DIRECTED); |
fceaf24a | 725 | if (ret == 0) |
c2a4efdd | 726 | dev->state = RNDIS_DEV_DATAINITIALIZED; |
fceaf24a | 727 | |
fceaf24a HJ |
728 | return ret; |
729 | } | |
730 | ||
9c26aa0d | 731 | static int rndis_filter_close_device(struct rndis_device *dev) |
fceaf24a HJ |
732 | { |
733 | int ret; | |
734 | ||
c2a4efdd | 735 | if (dev->state != RNDIS_DEV_DATAINITIALIZED) |
fceaf24a HJ |
736 | return 0; |
737 | ||
9c26aa0d | 738 | ret = rndis_filter_set_packet_filter(dev, 0); |
fceaf24a | 739 | if (ret == 0) |
c2a4efdd | 740 | dev->state = RNDIS_DEV_INITIALIZED; |
fceaf24a | 741 | |
fceaf24a HJ |
742 | return ret; |
743 | } | |
744 | ||
9c26aa0d | 745 | static int rndis_filte_device_add(struct hv_device *dev, |
c2a4efdd | 746 | void *additional_info) |
fceaf24a HJ |
747 | { |
748 | int ret; | |
ce9ea4cf | 749 | struct netvsc_device *netDevice; |
e681b954 | 750 | struct rndis_device *rndisDevice; |
c2a4efdd | 751 | struct netvsc_device_info *deviceInfo = additional_info; |
fceaf24a | 752 | |
9c26aa0d | 753 | rndisDevice = get_rndis_device(); |
83c720ea | 754 | if (!rndisDevice) |
fceaf24a | 755 | return -1; |
fceaf24a | 756 | |
0120ee0d GKH |
757 | /* |
758 | * Let the inner driver handle this first to create the netvsc channel | |
759 | * NOTE! Once the channel is created, we may get a receive callback | |
760 | * (RndisFilterOnReceive()) before this call is completed | |
761 | */ | |
ca623ad3 | 762 | ret = rndis_filter.inner_drv.base.dev_add(dev, additional_info); |
0120ee0d GKH |
763 | if (ret != 0) { |
764 | kfree(rndisDevice); | |
fceaf24a HJ |
765 | return ret; |
766 | } | |
767 | ||
454f18a9 BP |
768 | |
769 | /* Initialize the rndis device */ | |
ca623ad3 | 770 | netDevice = dev->ext; |
fceaf24a | 771 | |
53d21fdb | 772 | netDevice->extension = rndisDevice; |
c2a4efdd | 773 | rndisDevice->net_dev = netDevice; |
fceaf24a | 774 | |
454f18a9 | 775 | /* Send the rndis initialization message */ |
9c26aa0d | 776 | ret = rndis_filter_init_device(rndisDevice); |
0120ee0d GKH |
777 | if (ret != 0) { |
778 | /* | |
779 | * TODO: If rndis init failed, we will need to shut down the | |
780 | * channel | |
781 | */ | |
fceaf24a HJ |
782 | } |
783 | ||
454f18a9 | 784 | /* Get the mac address */ |
9c26aa0d | 785 | ret = rndis_filter_query_device_mac(rndisDevice); |
0120ee0d GKH |
786 | if (ret != 0) { |
787 | /* | |
788 | * TODO: shutdown rndis device and the channel | |
789 | */ | |
fceaf24a HJ |
790 | } |
791 | ||
9f8bd8ba | 792 | DPRINT_INFO(NETVSC, "Device 0x%p mac addr %pM", |
c2a4efdd | 793 | rndisDevice, rndisDevice->hw_mac_adr); |
fceaf24a | 794 | |
72a2f5bd | 795 | memcpy(deviceInfo->mac_adr, rndisDevice->hw_mac_adr, ETH_ALEN); |
fceaf24a | 796 | |
9c26aa0d | 797 | rndis_filter_query_device_link_status(rndisDevice); |
fceaf24a | 798 | |
72a2f5bd | 799 | deviceInfo->link_state = rndisDevice->link_stat; |
0120ee0d | 800 | DPRINT_INFO(NETVSC, "Device 0x%p link state %s", rndisDevice, |
72a2f5bd | 801 | ((deviceInfo->link_state) ? ("down") : ("up"))); |
fceaf24a | 802 | |
fceaf24a HJ |
803 | return ret; |
804 | } | |
805 | ||
9c26aa0d | 806 | static int rndis_filter_device_remove(struct hv_device *dev) |
fceaf24a | 807 | { |
ca623ad3 | 808 | struct netvsc_device *net_dev = dev->ext; |
53d21fdb | 809 | struct rndis_device *rndis_dev = net_dev->extension; |
fceaf24a | 810 | |
454f18a9 | 811 | /* Halt and release the rndis device */ |
9c26aa0d | 812 | rndis_filter_halt_device(rndis_dev); |
fceaf24a | 813 | |
c2a4efdd | 814 | kfree(rndis_dev); |
53d21fdb | 815 | net_dev->extension = NULL; |
fceaf24a | 816 | |
454f18a9 | 817 | /* Pass control to inner driver to remove the device */ |
ca623ad3 | 818 | rndis_filter.inner_drv.base.dev_rm(dev); |
fceaf24a | 819 | |
fceaf24a HJ |
820 | return 0; |
821 | } | |
822 | ||
9c26aa0d | 823 | static void rndis_filter_cleanup(struct hv_driver *drv) |
fceaf24a | 824 | { |
fceaf24a HJ |
825 | } |
826 | ||
9c26aa0d | 827 | int rndis_filter_open(struct hv_device *dev) |
fceaf24a | 828 | { |
ca623ad3 | 829 | struct netvsc_device *netDevice = dev->ext; |
fceaf24a | 830 | |
8a62d716 BP |
831 | if (!netDevice) |
832 | return -EINVAL; | |
833 | ||
53d21fdb | 834 | return rndis_filter_open_device(netDevice->extension); |
fceaf24a HJ |
835 | } |
836 | ||
9c26aa0d | 837 | int rndis_filter_close(struct hv_device *dev) |
fceaf24a | 838 | { |
ca623ad3 | 839 | struct netvsc_device *netDevice = dev->ext; |
fceaf24a | 840 | |
8a62d716 BP |
841 | if (!netDevice) |
842 | return -EINVAL; | |
843 | ||
53d21fdb | 844 | return rndis_filter_close_device(netDevice->extension); |
fceaf24a HJ |
845 | } |
846 | ||
9c26aa0d | 847 | static int rndis_filter_send(struct hv_device *dev, |
c2a4efdd | 848 | struct hv_netvsc_packet *pkt) |
fceaf24a | 849 | { |
0120ee0d | 850 | int ret; |
e681b954 | 851 | struct rndis_filter_packet *filterPacket; |
9f33d054 GKH |
852 | struct rndis_message *rndisMessage; |
853 | struct rndis_packet *rndisPacket; | |
4d643114 | 854 | u32 rndisMessageSize; |
fceaf24a | 855 | |
454f18a9 | 856 | /* Add the rndis header */ |
72a2f5bd | 857 | filterPacket = (struct rndis_filter_packet *)pkt->extension; |
fceaf24a | 858 | |
e681b954 | 859 | memset(filterPacket, 0, sizeof(struct rndis_filter_packet)); |
fceaf24a | 860 | |
c2a4efdd | 861 | rndisMessage = &filterPacket->msg; |
9f33d054 | 862 | rndisMessageSize = RNDIS_MESSAGE_SIZE(struct rndis_packet); |
fceaf24a | 863 | |
a388eb17 HZ |
864 | rndisMessage->ndis_msg_type = REMOTE_NDIS_PACKET_MSG; |
865 | rndisMessage->msg_len = pkt->total_data_buflen + | |
0120ee0d | 866 | rndisMessageSize; |
fceaf24a | 867 | |
a388eb17 HZ |
868 | rndisPacket = &rndisMessage->msg.pkt; |
869 | rndisPacket->data_offset = sizeof(struct rndis_packet); | |
870 | rndisPacket->data_len = pkt->total_data_buflen; | |
fceaf24a | 871 | |
72a2f5bd | 872 | pkt->is_data_pkt = true; |
ca623ad3 HZ |
873 | pkt->page_buf[0].pfn = virt_to_phys(rndisMessage) >> PAGE_SHIFT; |
874 | pkt->page_buf[0].offset = | |
0120ee0d | 875 | (unsigned long)rndisMessage & (PAGE_SIZE-1); |
ca623ad3 | 876 | pkt->page_buf[0].len = rndisMessageSize; |
fceaf24a | 877 | |
454f18a9 | 878 | /* Save the packet send completion and context */ |
72a2f5bd | 879 | filterPacket->completion = pkt->completion.send.send_completion; |
c2a4efdd | 880 | filterPacket->completion_ctx = |
72a2f5bd | 881 | pkt->completion.send.send_completion_ctx; |
fceaf24a | 882 | |
454f18a9 | 883 | /* Use ours */ |
72a2f5bd HZ |
884 | pkt->completion.send.send_completion = rndis_filter_send_completion; |
885 | pkt->completion.send.send_completion_ctx = filterPacket; | |
fceaf24a | 886 | |
72a2f5bd | 887 | ret = rndis_filter.inner_drv.send(dev, pkt); |
0120ee0d GKH |
888 | if (ret != 0) { |
889 | /* | |
890 | * Reset the completion to originals to allow retries from | |
891 | * above | |
892 | */ | |
72a2f5bd | 893 | pkt->completion.send.send_completion = |
c2a4efdd | 894 | filterPacket->completion; |
72a2f5bd | 895 | pkt->completion.send.send_completion_ctx = |
c2a4efdd | 896 | filterPacket->completion_ctx; |
fceaf24a HJ |
897 | } |
898 | ||
fceaf24a HJ |
899 | return ret; |
900 | } | |
901 | ||
9c26aa0d | 902 | static void rndis_filter_send_completion(void *ctx) |
fceaf24a | 903 | { |
c2a4efdd | 904 | struct rndis_filter_packet *filterPacket = ctx; |
fceaf24a | 905 | |
454f18a9 | 906 | /* Pass it back to the original handler */ |
c2a4efdd | 907 | filterPacket->completion(filterPacket->completion_ctx); |
fceaf24a HJ |
908 | } |
909 | ||
910 | ||
9c26aa0d | 911 | static void rndis_filter_send_request_completion(void *ctx) |
fceaf24a | 912 | { |
454f18a9 | 913 | /* Noop */ |
fceaf24a | 914 | } |