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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 | |
adf8d3ff | 14 | * this program; if not, see <http://www.gnu.org/licenses/>. |
fceaf24a HJ |
15 | * |
16 | * Authors: | |
17 | * Haiyang Zhang <haiyangz@microsoft.com> | |
18 | * Hank Janssen <hjanssen@microsoft.com> | |
fceaf24a | 19 | */ |
5654e932 | 20 | #include <linux/kernel.h> |
0c3b7b2f S |
21 | #include <linux/sched.h> |
22 | #include <linux/wait.h> | |
45da89e5 | 23 | #include <linux/highmem.h> |
5a0e3ad6 | 24 | #include <linux/slab.h> |
0120ee0d | 25 | #include <linux/io.h> |
9f8bd8ba | 26 | #include <linux/if_ether.h> |
eb335bc4 | 27 | #include <linux/netdevice.h> |
1f5f3a75 | 28 | #include <linux/if_vlan.h> |
1ce09e89 | 29 | #include <linux/nls.h> |
3f335ea2 | 30 | |
5ca7252a | 31 | #include "hyperv_net.h" |
fceaf24a | 32 | |
fceaf24a | 33 | |
a3a6cab5 | 34 | #define RNDIS_EXT_LEN 100 |
e681b954 | 35 | struct rndis_request { |
c2a4efdd | 36 | struct list_head list_ent; |
98d79690 | 37 | struct completion wait_event; |
fceaf24a | 38 | |
a3a6cab5 | 39 | struct rndis_message response_msg; |
0120ee0d | 40 | /* |
a3a6cab5 HZ |
41 | * The buffer for extended info after the RNDIS response message. It's |
42 | * referenced based on the data offset in the RNDIS message. Its size | |
43 | * is enough for current needs, and should be sufficient for the near | |
44 | * future. | |
0120ee0d | 45 | */ |
a3a6cab5 | 46 | u8 response_ext[RNDIS_EXT_LEN]; |
fceaf24a | 47 | |
454f18a9 | 48 | /* Simplify allocation by having a netvsc packet inline */ |
c2a4efdd | 49 | struct hv_netvsc_packet pkt; |
99e3fcfa HZ |
50 | /* Set 2 pages for rndis requests crossing page boundary */ |
51 | struct hv_page_buffer buf[2]; | |
0f48917b | 52 | |
c2a4efdd | 53 | struct rndis_message request_msg; |
0f48917b | 54 | /* |
a3a6cab5 HZ |
55 | * The buffer for the extended info after the RNDIS request message. |
56 | * It is referenced and sized in a similar way as response_ext. | |
0f48917b | 57 | */ |
a3a6cab5 | 58 | u8 request_ext[RNDIS_EXT_LEN]; |
e681b954 | 59 | }; |
fceaf24a | 60 | |
9c26aa0d | 61 | static struct rndis_device *get_rndis_device(void) |
fceaf24a | 62 | { |
e681b954 | 63 | struct rndis_device *device; |
fceaf24a | 64 | |
e681b954 | 65 | device = kzalloc(sizeof(struct rndis_device), GFP_KERNEL); |
fceaf24a | 66 | if (!device) |
fceaf24a | 67 | return NULL; |
fceaf24a | 68 | |
880fb89c | 69 | spin_lock_init(&device->request_lock); |
fceaf24a | 70 | |
c2a4efdd | 71 | INIT_LIST_HEAD(&device->req_list); |
fceaf24a | 72 | |
c2a4efdd | 73 | device->state = RNDIS_DEV_UNINITIALIZED; |
fceaf24a HJ |
74 | |
75 | return device; | |
76 | } | |
77 | ||
9c26aa0d | 78 | static struct rndis_request *get_rndis_request(struct rndis_device *dev, |
c2a4efdd HZ |
79 | u32 msg_type, |
80 | u32 msg_len) | |
fceaf24a | 81 | { |
e681b954 | 82 | struct rndis_request *request; |
c2a4efdd | 83 | struct rndis_message *rndis_msg; |
9f33d054 | 84 | struct rndis_set_request *set; |
880fb89c | 85 | unsigned long flags; |
fceaf24a | 86 | |
e681b954 | 87 | request = kzalloc(sizeof(struct rndis_request), GFP_KERNEL); |
fceaf24a | 88 | if (!request) |
fceaf24a | 89 | return NULL; |
fceaf24a | 90 | |
98d79690 | 91 | init_completion(&request->wait_event); |
fceaf24a | 92 | |
c2a4efdd | 93 | rndis_msg = &request->request_msg; |
a388eb17 HZ |
94 | rndis_msg->ndis_msg_type = msg_type; |
95 | rndis_msg->msg_len = msg_len; | |
fceaf24a | 96 | |
0120ee0d GKH |
97 | /* |
98 | * Set the request id. This field is always after the rndis header for | |
99 | * request/response packet types so we just used the SetRequest as a | |
100 | * template | |
101 | */ | |
a388eb17 HZ |
102 | set = &rndis_msg->msg.set_req; |
103 | set->req_id = atomic_inc_return(&dev->new_req_id); | |
fceaf24a | 104 | |
454f18a9 | 105 | /* Add to the request list */ |
c2a4efdd HZ |
106 | spin_lock_irqsave(&dev->request_lock, flags); |
107 | list_add_tail(&request->list_ent, &dev->req_list); | |
108 | spin_unlock_irqrestore(&dev->request_lock, flags); | |
fceaf24a HJ |
109 | |
110 | return request; | |
111 | } | |
112 | ||
9c26aa0d | 113 | static void put_rndis_request(struct rndis_device *dev, |
c2a4efdd | 114 | struct rndis_request *req) |
fceaf24a | 115 | { |
880fb89c GKH |
116 | unsigned long flags; |
117 | ||
c2a4efdd HZ |
118 | spin_lock_irqsave(&dev->request_lock, flags); |
119 | list_del(&req->list_ent); | |
120 | spin_unlock_irqrestore(&dev->request_lock, flags); | |
fceaf24a | 121 | |
c2a4efdd | 122 | kfree(req); |
fceaf24a HJ |
123 | } |
124 | ||
729a2849 HZ |
125 | static void dump_rndis_message(struct hv_device *hv_dev, |
126 | struct rndis_message *rndis_msg) | |
fceaf24a | 127 | { |
2ddd5e5f S |
128 | struct net_device *netdev; |
129 | struct netvsc_device *net_device; | |
130 | ||
131 | net_device = hv_get_drvdata(hv_dev); | |
132 | netdev = net_device->ndev; | |
729a2849 | 133 | |
a388eb17 | 134 | switch (rndis_msg->ndis_msg_type) { |
51491167 LW |
135 | case RNDIS_MSG_PACKET: |
136 | netdev_dbg(netdev, "RNDIS_MSG_PACKET (len %u, " | |
0120ee0d GKH |
137 | "data offset %u data len %u, # oob %u, " |
138 | "oob offset %u, oob len %u, pkt offset %u, " | |
729a2849 | 139 | "pkt len %u\n", |
a388eb17 HZ |
140 | rndis_msg->msg_len, |
141 | rndis_msg->msg.pkt.data_offset, | |
142 | rndis_msg->msg.pkt.data_len, | |
143 | rndis_msg->msg.pkt.num_oob_data_elements, | |
144 | rndis_msg->msg.pkt.oob_data_offset, | |
145 | rndis_msg->msg.pkt.oob_data_len, | |
146 | rndis_msg->msg.pkt.per_pkt_info_offset, | |
147 | rndis_msg->msg.pkt.per_pkt_info_len); | |
fceaf24a HJ |
148 | break; |
149 | ||
51491167 LW |
150 | case RNDIS_MSG_INIT_C: |
151 | netdev_dbg(netdev, "RNDIS_MSG_INIT_C " | |
0120ee0d GKH |
152 | "(len %u, id 0x%x, status 0x%x, major %d, minor %d, " |
153 | "device flags %d, max xfer size 0x%x, max pkts %u, " | |
729a2849 | 154 | "pkt aligned %u)\n", |
a388eb17 HZ |
155 | rndis_msg->msg_len, |
156 | rndis_msg->msg.init_complete.req_id, | |
157 | rndis_msg->msg.init_complete.status, | |
158 | rndis_msg->msg.init_complete.major_ver, | |
159 | rndis_msg->msg.init_complete.minor_ver, | |
160 | rndis_msg->msg.init_complete.dev_flags, | |
161 | rndis_msg->msg.init_complete.max_xfer_size, | |
162 | rndis_msg->msg.init_complete. | |
163 | max_pkt_per_msg, | |
164 | rndis_msg->msg.init_complete. | |
165 | pkt_alignment_factor); | |
fceaf24a HJ |
166 | break; |
167 | ||
51491167 LW |
168 | case RNDIS_MSG_QUERY_C: |
169 | netdev_dbg(netdev, "RNDIS_MSG_QUERY_C " | |
0120ee0d | 170 | "(len %u, id 0x%x, status 0x%x, buf len %u, " |
729a2849 | 171 | "buf offset %u)\n", |
a388eb17 HZ |
172 | rndis_msg->msg_len, |
173 | rndis_msg->msg.query_complete.req_id, | |
174 | rndis_msg->msg.query_complete.status, | |
175 | rndis_msg->msg.query_complete. | |
176 | info_buflen, | |
177 | rndis_msg->msg.query_complete. | |
178 | info_buf_offset); | |
fceaf24a HJ |
179 | break; |
180 | ||
51491167 | 181 | case RNDIS_MSG_SET_C: |
729a2849 | 182 | netdev_dbg(netdev, |
51491167 | 183 | "RNDIS_MSG_SET_C (len %u, id 0x%x, status 0x%x)\n", |
a388eb17 HZ |
184 | rndis_msg->msg_len, |
185 | rndis_msg->msg.set_complete.req_id, | |
186 | rndis_msg->msg.set_complete.status); | |
fceaf24a HJ |
187 | break; |
188 | ||
51491167 LW |
189 | case RNDIS_MSG_INDICATE: |
190 | netdev_dbg(netdev, "RNDIS_MSG_INDICATE " | |
729a2849 | 191 | "(len %u, status 0x%x, buf len %u, buf offset %u)\n", |
a388eb17 HZ |
192 | rndis_msg->msg_len, |
193 | rndis_msg->msg.indicate_status.status, | |
194 | rndis_msg->msg.indicate_status.status_buflen, | |
195 | rndis_msg->msg.indicate_status.status_buf_offset); | |
fceaf24a HJ |
196 | break; |
197 | ||
198 | default: | |
729a2849 | 199 | netdev_dbg(netdev, "0x%x (len %u)\n", |
a388eb17 HZ |
200 | rndis_msg->ndis_msg_type, |
201 | rndis_msg->msg_len); | |
fceaf24a HJ |
202 | break; |
203 | } | |
204 | } | |
205 | ||
9c26aa0d | 206 | static int rndis_filter_send_request(struct rndis_device *dev, |
c2a4efdd | 207 | struct rndis_request *req) |
fceaf24a | 208 | { |
0120ee0d | 209 | int ret; |
4193d4f4 | 210 | struct hv_netvsc_packet *packet; |
fceaf24a | 211 | |
454f18a9 | 212 | /* Setup the packet to send it */ |
c2a4efdd | 213 | packet = &req->pkt; |
fceaf24a | 214 | |
72a2f5bd | 215 | packet->is_data_pkt = false; |
a388eb17 | 216 | packet->total_data_buflen = req->request_msg.msg_len; |
72a2f5bd | 217 | packet->page_buf_cnt = 1; |
fceaf24a | 218 | |
ca623ad3 | 219 | packet->page_buf[0].pfn = virt_to_phys(&req->request_msg) >> |
0120ee0d | 220 | PAGE_SHIFT; |
ca623ad3 HZ |
221 | packet->page_buf[0].len = req->request_msg.msg_len; |
222 | packet->page_buf[0].offset = | |
c2a4efdd | 223 | (unsigned long)&req->request_msg & (PAGE_SIZE - 1); |
fceaf24a | 224 | |
99e3fcfa HZ |
225 | /* Add one page_buf when request_msg crossing page boundary */ |
226 | if (packet->page_buf[0].offset + packet->page_buf[0].len > PAGE_SIZE) { | |
227 | packet->page_buf_cnt++; | |
228 | packet->page_buf[0].len = PAGE_SIZE - | |
229 | packet->page_buf[0].offset; | |
230 | packet->page_buf[1].pfn = virt_to_phys((void *)&req->request_msg | |
231 | + packet->page_buf[0].len) >> PAGE_SHIFT; | |
232 | packet->page_buf[1].offset = 0; | |
233 | packet->page_buf[1].len = req->request_msg.msg_len - | |
234 | packet->page_buf[0].len; | |
235 | } | |
236 | ||
f1ea3cd7 | 237 | packet->completion.send.send_completion = NULL; |
fceaf24a | 238 | |
0ec6ff40 | 239 | ret = netvsc_send(dev->net_dev->dev, packet); |
fceaf24a HJ |
240 | return ret; |
241 | } | |
242 | ||
1b07da51 HZ |
243 | static void rndis_set_link_state(struct rndis_device *rdev, |
244 | struct rndis_request *request) | |
245 | { | |
246 | u32 link_status; | |
247 | struct rndis_query_complete *query_complete; | |
248 | ||
249 | query_complete = &request->response_msg.msg.query_complete; | |
250 | ||
251 | if (query_complete->status == RNDIS_STATUS_SUCCESS && | |
252 | query_complete->info_buflen == sizeof(u32)) { | |
253 | memcpy(&link_status, (void *)((unsigned long)query_complete + | |
254 | query_complete->info_buf_offset), sizeof(u32)); | |
255 | rdev->link_state = link_status != 0; | |
256 | } | |
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; |
2ddd5e5f S |
265 | struct net_device *ndev; |
266 | ||
267 | ndev = dev->net_dev->ndev; | |
fceaf24a | 268 | |
c2a4efdd HZ |
269 | spin_lock_irqsave(&dev->request_lock, flags); |
270 | list_for_each_entry(request, &dev->req_list, list_ent) { | |
0120ee0d GKH |
271 | /* |
272 | * All request/response message contains RequestId as the 1st | |
273 | * field | |
274 | */ | |
a388eb17 HZ |
275 | if (request->request_msg.msg.init_req.req_id |
276 | == resp->msg.init_complete.req_id) { | |
0e727613 | 277 | found = true; |
fceaf24a HJ |
278 | break; |
279 | } | |
280 | } | |
c2a4efdd | 281 | spin_unlock_irqrestore(&dev->request_lock, flags); |
fceaf24a | 282 | |
0120ee0d | 283 | if (found) { |
a3a6cab5 HZ |
284 | if (resp->msg_len <= |
285 | sizeof(struct rndis_message) + RNDIS_EXT_LEN) { | |
c2a4efdd | 286 | memcpy(&request->response_msg, resp, |
a388eb17 | 287 | resp->msg_len); |
1b07da51 HZ |
288 | if (request->request_msg.ndis_msg_type == |
289 | RNDIS_MSG_QUERY && request->request_msg.msg. | |
290 | query_req.oid == RNDIS_OID_GEN_MEDIA_CONNECT_STATUS) | |
291 | rndis_set_link_state(dev, request); | |
0120ee0d | 292 | } else { |
d9871158 | 293 | netdev_err(ndev, |
eb335bc4 HJ |
294 | "rndis response buffer overflow " |
295 | "detected (size %u max %zu)\n", | |
296 | resp->msg_len, | |
f3f885fa | 297 | sizeof(struct rndis_message)); |
0120ee0d | 298 | |
a388eb17 | 299 | if (resp->ndis_msg_type == |
51491167 | 300 | RNDIS_MSG_RESET_C) { |
0120ee0d | 301 | /* does not have a request id field */ |
a388eb17 | 302 | request->response_msg.msg.reset_complete. |
007e5c8e | 303 | status = RNDIS_STATUS_BUFFER_OVERFLOW; |
0120ee0d | 304 | } else { |
a388eb17 HZ |
305 | request->response_msg.msg. |
306 | init_complete.status = | |
007e5c8e | 307 | RNDIS_STATUS_BUFFER_OVERFLOW; |
fceaf24a HJ |
308 | } |
309 | } | |
310 | ||
98d79690 | 311 | complete(&request->wait_event); |
0120ee0d | 312 | } else { |
d9871158 | 313 | netdev_err(ndev, |
eb335bc4 HJ |
314 | "no rndis request found for this response " |
315 | "(id 0x%x res type 0x%x)\n", | |
316 | resp->msg.init_complete.req_id, | |
317 | resp->ndis_msg_type); | |
fceaf24a | 318 | } |
fceaf24a HJ |
319 | } |
320 | ||
9c26aa0d | 321 | static void rndis_filter_receive_indicate_status(struct rndis_device *dev, |
c2a4efdd | 322 | struct rndis_message *resp) |
fceaf24a | 323 | { |
0120ee0d | 324 | struct rndis_indicate_status *indicate = |
a388eb17 | 325 | &resp->msg.indicate_status; |
fceaf24a | 326 | |
a388eb17 | 327 | if (indicate->status == RNDIS_STATUS_MEDIA_CONNECT) { |
39fb6aab | 328 | netvsc_linkstatus_callback( |
53d21fdb | 329 | dev->net_dev->dev, 1); |
a388eb17 | 330 | } else if (indicate->status == RNDIS_STATUS_MEDIA_DISCONNECT) { |
39fb6aab | 331 | netvsc_linkstatus_callback( |
53d21fdb | 332 | dev->net_dev->dev, 0); |
0120ee0d GKH |
333 | } else { |
334 | /* | |
335 | * TODO: | |
336 | */ | |
fceaf24a HJ |
337 | } |
338 | } | |
339 | ||
1f5f3a75 HZ |
340 | /* |
341 | * Get the Per-Packet-Info with the specified type | |
342 | * return NULL if not found. | |
343 | */ | |
344 | static inline void *rndis_get_ppi(struct rndis_packet *rpkt, u32 type) | |
345 | { | |
346 | struct rndis_per_packet_info *ppi; | |
347 | int len; | |
348 | ||
349 | if (rpkt->per_pkt_info_offset == 0) | |
350 | return NULL; | |
351 | ||
352 | ppi = (struct rndis_per_packet_info *)((ulong)rpkt + | |
353 | rpkt->per_pkt_info_offset); | |
354 | len = rpkt->per_pkt_info_len; | |
355 | ||
356 | while (len > 0) { | |
357 | if (ppi->type == type) | |
358 | return (void *)((ulong)ppi + ppi->ppi_offset); | |
359 | len -= ppi->size; | |
360 | ppi = (struct rndis_per_packet_info *)((ulong)ppi + ppi->size); | |
361 | } | |
362 | ||
363 | return NULL; | |
364 | } | |
365 | ||
9c26aa0d | 366 | static void rndis_filter_receive_data(struct rndis_device *dev, |
c2a4efdd HZ |
367 | struct rndis_message *msg, |
368 | struct hv_netvsc_packet *pkt) | |
fceaf24a | 369 | { |
c2a4efdd HZ |
370 | struct rndis_packet *rndis_pkt; |
371 | u32 data_offset; | |
1f5f3a75 | 372 | struct ndis_pkt_8021q_info *vlan; |
fceaf24a | 373 | |
a388eb17 | 374 | rndis_pkt = &msg->msg.pkt; |
fceaf24a | 375 | |
454f18a9 | 376 | /* Remove the rndis header and pass it back up the stack */ |
a388eb17 | 377 | data_offset = RNDIS_HEADER_SIZE + rndis_pkt->data_offset; |
fceaf24a | 378 | |
72a2f5bd | 379 | pkt->total_data_buflen -= data_offset; |
4b8a8bc9 WY |
380 | |
381 | /* | |
382 | * Make sure we got a valid RNDIS message, now total_data_buflen | |
383 | * should be the data packet size plus the trailer padding size | |
384 | */ | |
385 | if (pkt->total_data_buflen < rndis_pkt->data_len) { | |
386 | netdev_err(dev->net_dev->ndev, "rndis message buffer " | |
387 | "overflow detected (got %u, min %u)" | |
388 | "...dropping this message!\n", | |
389 | pkt->total_data_buflen, rndis_pkt->data_len); | |
390 | return; | |
391 | } | |
392 | ||
393 | /* | |
394 | * Remove the rndis trailer padding from rndis packet message | |
395 | * rndis_pkt->data_len tell us the real data length, we only copy | |
396 | * the data packet to the stack, without the rndis trailer padding | |
397 | */ | |
398 | pkt->total_data_buflen = rndis_pkt->data_len; | |
45326342 | 399 | pkt->data = (void *)((unsigned long)pkt->data + data_offset); |
669c1fc6 | 400 | |
72a2f5bd | 401 | pkt->is_data_pkt = true; |
fceaf24a | 402 | |
1f5f3a75 HZ |
403 | vlan = rndis_get_ppi(rndis_pkt, IEEE_8021Q_INFO); |
404 | if (vlan) { | |
405 | pkt->vlan_tci = VLAN_TAG_PRESENT | vlan->vlanid | | |
406 | (vlan->pri << VLAN_PRIO_SHIFT); | |
407 | } else { | |
408 | pkt->vlan_tci = 0; | |
409 | } | |
410 | ||
a25e1dbe | 411 | netvsc_recv_callback(dev->net_dev->dev, pkt); |
fceaf24a HJ |
412 | } |
413 | ||
5fcc4115 | 414 | int rndis_filter_receive(struct hv_device *dev, |
c2a4efdd | 415 | struct hv_netvsc_packet *pkt) |
fceaf24a | 416 | { |
2ddd5e5f | 417 | struct netvsc_device *net_dev = hv_get_drvdata(dev); |
c2a4efdd | 418 | struct rndis_device *rndis_dev; |
ef31bef6 | 419 | struct rndis_message *rndis_msg; |
2ddd5e5f | 420 | struct net_device *ndev; |
63f6921d | 421 | int ret = 0; |
2ddd5e5f | 422 | |
63f6921d HZ |
423 | if (!net_dev) { |
424 | ret = -EINVAL; | |
425 | goto exit; | |
426 | } | |
8a62d716 | 427 | |
715a4801 S |
428 | ndev = net_dev->ndev; |
429 | ||
454f18a9 | 430 | /* Make sure the rndis device state is initialized */ |
53d21fdb | 431 | if (!net_dev->extension) { |
d9871158 | 432 | netdev_err(ndev, "got rndis message but no rndis device - " |
eb335bc4 | 433 | "dropping this message!\n"); |
63f6921d HZ |
434 | ret = -ENODEV; |
435 | goto exit; | |
fceaf24a HJ |
436 | } |
437 | ||
53d21fdb | 438 | rndis_dev = (struct rndis_device *)net_dev->extension; |
c2a4efdd | 439 | if (rndis_dev->state == RNDIS_DEV_UNINITIALIZED) { |
d9871158 | 440 | netdev_err(ndev, "got rndis message but rndis device " |
eb335bc4 | 441 | "uninitialized...dropping this message!\n"); |
63f6921d HZ |
442 | ret = -ENODEV; |
443 | goto exit; | |
fceaf24a HJ |
444 | } |
445 | ||
ef31bef6 | 446 | rndis_msg = pkt->data; |
fceaf24a | 447 | |
ef31bef6 | 448 | dump_rndis_message(dev, rndis_msg); |
fceaf24a | 449 | |
ef31bef6 | 450 | switch (rndis_msg->ndis_msg_type) { |
51491167 | 451 | case RNDIS_MSG_PACKET: |
0120ee0d | 452 | /* data msg */ |
ef31bef6 | 453 | rndis_filter_receive_data(rndis_dev, rndis_msg, pkt); |
fceaf24a HJ |
454 | break; |
455 | ||
51491167 LW |
456 | case RNDIS_MSG_INIT_C: |
457 | case RNDIS_MSG_QUERY_C: | |
458 | case RNDIS_MSG_SET_C: | |
0120ee0d | 459 | /* completion msgs */ |
ef31bef6 | 460 | rndis_filter_receive_response(rndis_dev, rndis_msg); |
fceaf24a HJ |
461 | break; |
462 | ||
51491167 | 463 | case RNDIS_MSG_INDICATE: |
0120ee0d | 464 | /* notification msgs */ |
ef31bef6 | 465 | rndis_filter_receive_indicate_status(rndis_dev, rndis_msg); |
fceaf24a HJ |
466 | break; |
467 | default: | |
d9871158 | 468 | netdev_err(ndev, |
eb335bc4 | 469 | "unhandled rndis message (type %u len %u)\n", |
ef31bef6 HZ |
470 | rndis_msg->ndis_msg_type, |
471 | rndis_msg->msg_len); | |
fceaf24a HJ |
472 | break; |
473 | } | |
474 | ||
63f6921d HZ |
475 | exit: |
476 | if (ret != 0) | |
477 | pkt->status = NVSP_STAT_FAIL; | |
478 | ||
479 | return ret; | |
fceaf24a HJ |
480 | } |
481 | ||
9c26aa0d | 482 | static int rndis_filter_query_device(struct rndis_device *dev, u32 oid, |
c2a4efdd | 483 | void *result, u32 *result_size) |
fceaf24a | 484 | { |
e681b954 | 485 | struct rndis_request *request; |
c2a4efdd | 486 | u32 inresult_size = *result_size; |
9f33d054 | 487 | struct rndis_query_request *query; |
c2a4efdd | 488 | struct rndis_query_complete *query_complete; |
0120ee0d | 489 | int ret = 0; |
98d79690 | 490 | int t; |
fceaf24a | 491 | |
c2a4efdd | 492 | if (!result) |
8a62d716 | 493 | return -EINVAL; |
fceaf24a | 494 | |
c2a4efdd | 495 | *result_size = 0; |
51491167 | 496 | request = get_rndis_request(dev, RNDIS_MSG_QUERY, |
0120ee0d GKH |
497 | RNDIS_MESSAGE_SIZE(struct rndis_query_request)); |
498 | if (!request) { | |
de6e0580 | 499 | ret = -ENOMEM; |
1c627870 | 500 | goto cleanup; |
fceaf24a HJ |
501 | } |
502 | ||
454f18a9 | 503 | /* Setup the rndis query */ |
a388eb17 HZ |
504 | query = &request->request_msg.msg.query_req; |
505 | query->oid = oid; | |
506 | query->info_buf_offset = sizeof(struct rndis_query_request); | |
507 | query->info_buflen = 0; | |
508 | query->dev_vc_handle = 0; | |
fceaf24a | 509 | |
9c26aa0d | 510 | ret = rndis_filter_send_request(dev, request); |
fceaf24a | 511 | if (ret != 0) |
1c627870 | 512 | goto cleanup; |
fceaf24a | 513 | |
5c5781b3 | 514 | t = wait_for_completion_timeout(&request->wait_event, 5*HZ); |
98d79690 | 515 | if (t == 0) { |
0c3b7b2f | 516 | ret = -ETIMEDOUT; |
1c627870 | 517 | goto cleanup; |
0c3b7b2f | 518 | } |
fceaf24a | 519 | |
454f18a9 | 520 | /* Copy the response back */ |
a388eb17 | 521 | query_complete = &request->response_msg.msg.query_complete; |
fceaf24a | 522 | |
a388eb17 | 523 | if (query_complete->info_buflen > inresult_size) { |
fceaf24a | 524 | ret = -1; |
1c627870 | 525 | goto cleanup; |
fceaf24a HJ |
526 | } |
527 | ||
c2a4efdd HZ |
528 | memcpy(result, |
529 | (void *)((unsigned long)query_complete + | |
a388eb17 HZ |
530 | query_complete->info_buf_offset), |
531 | query_complete->info_buflen); | |
fceaf24a | 532 | |
a388eb17 | 533 | *result_size = query_complete->info_buflen; |
fceaf24a | 534 | |
1c627870 | 535 | cleanup: |
fceaf24a | 536 | if (request) |
9c26aa0d | 537 | put_rndis_request(dev, request); |
fceaf24a HJ |
538 | |
539 | return ret; | |
540 | } | |
541 | ||
9c26aa0d | 542 | static int rndis_filter_query_device_mac(struct rndis_device *dev) |
fceaf24a | 543 | { |
9f8bd8ba | 544 | u32 size = ETH_ALEN; |
fceaf24a | 545 | |
9c26aa0d | 546 | return rndis_filter_query_device(dev, |
0120ee0d | 547 | RNDIS_OID_802_3_PERMANENT_ADDRESS, |
c2a4efdd | 548 | dev->hw_mac_adr, &size); |
fceaf24a HJ |
549 | } |
550 | ||
1ce09e89 HZ |
551 | #define NWADR_STR "NetworkAddress" |
552 | #define NWADR_STRLEN 14 | |
553 | ||
554 | int rndis_filter_set_device_mac(struct hv_device *hdev, char *mac) | |
555 | { | |
556 | struct netvsc_device *nvdev = hv_get_drvdata(hdev); | |
557 | struct rndis_device *rdev = nvdev->extension; | |
558 | struct net_device *ndev = nvdev->ndev; | |
559 | struct rndis_request *request; | |
560 | struct rndis_set_request *set; | |
561 | struct rndis_config_parameter_info *cpi; | |
562 | wchar_t *cfg_nwadr, *cfg_mac; | |
563 | struct rndis_set_complete *set_complete; | |
564 | char macstr[2*ETH_ALEN+1]; | |
565 | u32 extlen = sizeof(struct rndis_config_parameter_info) + | |
566 | 2*NWADR_STRLEN + 4*ETH_ALEN; | |
567 | int ret, t; | |
568 | ||
569 | request = get_rndis_request(rdev, RNDIS_MSG_SET, | |
570 | RNDIS_MESSAGE_SIZE(struct rndis_set_request) + extlen); | |
571 | if (!request) | |
572 | return -ENOMEM; | |
573 | ||
574 | set = &request->request_msg.msg.set_req; | |
575 | set->oid = RNDIS_OID_GEN_RNDIS_CONFIG_PARAMETER; | |
576 | set->info_buflen = extlen; | |
577 | set->info_buf_offset = sizeof(struct rndis_set_request); | |
578 | set->dev_vc_handle = 0; | |
579 | ||
580 | cpi = (struct rndis_config_parameter_info *)((ulong)set + | |
581 | set->info_buf_offset); | |
582 | cpi->parameter_name_offset = | |
583 | sizeof(struct rndis_config_parameter_info); | |
584 | /* Multiply by 2 because host needs 2 bytes (utf16) for each char */ | |
585 | cpi->parameter_name_length = 2*NWADR_STRLEN; | |
586 | cpi->parameter_type = RNDIS_CONFIG_PARAM_TYPE_STRING; | |
587 | cpi->parameter_value_offset = | |
588 | cpi->parameter_name_offset + cpi->parameter_name_length; | |
589 | /* Multiply by 4 because each MAC byte displayed as 2 utf16 chars */ | |
590 | cpi->parameter_value_length = 4*ETH_ALEN; | |
591 | ||
592 | cfg_nwadr = (wchar_t *)((ulong)cpi + cpi->parameter_name_offset); | |
593 | cfg_mac = (wchar_t *)((ulong)cpi + cpi->parameter_value_offset); | |
594 | ret = utf8s_to_utf16s(NWADR_STR, NWADR_STRLEN, UTF16_HOST_ENDIAN, | |
595 | cfg_nwadr, NWADR_STRLEN); | |
596 | if (ret < 0) | |
597 | goto cleanup; | |
598 | snprintf(macstr, 2*ETH_ALEN+1, "%pm", mac); | |
599 | ret = utf8s_to_utf16s(macstr, 2*ETH_ALEN, UTF16_HOST_ENDIAN, | |
600 | cfg_mac, 2*ETH_ALEN); | |
601 | if (ret < 0) | |
602 | goto cleanup; | |
603 | ||
604 | ret = rndis_filter_send_request(rdev, request); | |
605 | if (ret != 0) | |
606 | goto cleanup; | |
607 | ||
608 | t = wait_for_completion_timeout(&request->wait_event, 5*HZ); | |
609 | if (t == 0) { | |
610 | netdev_err(ndev, "timeout before we got a set response...\n"); | |
611 | /* | |
612 | * can't put_rndis_request, since we may still receive a | |
613 | * send-completion. | |
614 | */ | |
615 | return -EBUSY; | |
616 | } else { | |
617 | set_complete = &request->response_msg.msg.set_complete; | |
b02a8067 HZ |
618 | if (set_complete->status != RNDIS_STATUS_SUCCESS) { |
619 | netdev_err(ndev, "Fail to set MAC on host side:0x%x\n", | |
620 | set_complete->status); | |
1ce09e89 | 621 | ret = -EINVAL; |
b02a8067 | 622 | } |
1ce09e89 HZ |
623 | } |
624 | ||
625 | cleanup: | |
626 | put_rndis_request(rdev, request); | |
627 | return ret; | |
628 | } | |
629 | ||
630 | ||
9c26aa0d | 631 | static int rndis_filter_query_device_link_status(struct rndis_device *dev) |
fceaf24a | 632 | { |
0120ee0d | 633 | u32 size = sizeof(u32); |
6f27457b S |
634 | u32 link_status; |
635 | int ret; | |
fceaf24a | 636 | |
6f27457b | 637 | ret = rndis_filter_query_device(dev, |
0120ee0d | 638 | RNDIS_OID_GEN_MEDIA_CONNECT_STATUS, |
6f27457b | 639 | &link_status, &size); |
6f27457b S |
640 | |
641 | return ret; | |
fceaf24a HJ |
642 | } |
643 | ||
d426b2e3 | 644 | int rndis_filter_set_packet_filter(struct rndis_device *dev, u32 new_filter) |
fceaf24a | 645 | { |
e681b954 | 646 | struct rndis_request *request; |
9f33d054 | 647 | struct rndis_set_request *set; |
c2a4efdd | 648 | struct rndis_set_complete *set_complete; |
4d643114 | 649 | u32 status; |
98d79690 | 650 | int ret, t; |
2ddd5e5f S |
651 | struct net_device *ndev; |
652 | ||
653 | ndev = dev->net_dev->ndev; | |
fceaf24a | 654 | |
51491167 | 655 | request = get_rndis_request(dev, RNDIS_MSG_SET, |
0120ee0d GKH |
656 | RNDIS_MESSAGE_SIZE(struct rndis_set_request) + |
657 | sizeof(u32)); | |
658 | if (!request) { | |
58ef3977 | 659 | ret = -ENOMEM; |
1c627870 | 660 | goto cleanup; |
fceaf24a HJ |
661 | } |
662 | ||
454f18a9 | 663 | /* Setup the rndis set */ |
a388eb17 HZ |
664 | set = &request->request_msg.msg.set_req; |
665 | set->oid = RNDIS_OID_GEN_CURRENT_PACKET_FILTER; | |
666 | set->info_buflen = sizeof(u32); | |
667 | set->info_buf_offset = sizeof(struct rndis_set_request); | |
fceaf24a | 668 | |
0120ee0d | 669 | memcpy((void *)(unsigned long)set + sizeof(struct rndis_set_request), |
c2a4efdd | 670 | &new_filter, sizeof(u32)); |
fceaf24a | 671 | |
9c26aa0d | 672 | ret = rndis_filter_send_request(dev, request); |
fceaf24a | 673 | if (ret != 0) |
1c627870 | 674 | goto cleanup; |
fceaf24a | 675 | |
5c5781b3 | 676 | t = wait_for_completion_timeout(&request->wait_event, 5*HZ); |
98d79690 S |
677 | |
678 | if (t == 0) { | |
d9871158 | 679 | netdev_err(ndev, |
eb335bc4 | 680 | "timeout before we got a set response...\n"); |
ea496374 | 681 | ret = -ETIMEDOUT; |
0120ee0d | 682 | /* |
25985edc | 683 | * We can't deallocate the request since we may still receive a |
0120ee0d GKH |
684 | * send completion for it. |
685 | */ | |
5585d81e | 686 | goto exit; |
0120ee0d | 687 | } else { |
a388eb17 HZ |
688 | set_complete = &request->response_msg.msg.set_complete; |
689 | status = set_complete->status; | |
fceaf24a HJ |
690 | } |
691 | ||
1c627870 | 692 | cleanup: |
fceaf24a | 693 | if (request) |
9c26aa0d | 694 | put_rndis_request(dev, request); |
5585d81e | 695 | exit: |
fceaf24a HJ |
696 | return ret; |
697 | } | |
698 | ||
fceaf24a | 699 | |
9c26aa0d | 700 | static int rndis_filter_init_device(struct rndis_device *dev) |
fceaf24a | 701 | { |
e681b954 | 702 | struct rndis_request *request; |
9f33d054 | 703 | struct rndis_initialize_request *init; |
c2a4efdd | 704 | struct rndis_initialize_complete *init_complete; |
4d643114 | 705 | u32 status; |
98d79690 | 706 | int ret, t; |
fceaf24a | 707 | |
51491167 | 708 | request = get_rndis_request(dev, RNDIS_MSG_INIT, |
0120ee0d GKH |
709 | RNDIS_MESSAGE_SIZE(struct rndis_initialize_request)); |
710 | if (!request) { | |
bc49b926 | 711 | ret = -ENOMEM; |
1c627870 | 712 | goto cleanup; |
fceaf24a HJ |
713 | } |
714 | ||
454f18a9 | 715 | /* Setup the rndis set */ |
a388eb17 HZ |
716 | init = &request->request_msg.msg.init_req; |
717 | init->major_ver = RNDIS_MAJOR_VERSION; | |
718 | init->minor_ver = RNDIS_MINOR_VERSION; | |
fb1d074e | 719 | init->max_xfer_size = 0x4000; |
fceaf24a | 720 | |
c2a4efdd | 721 | dev->state = RNDIS_DEV_INITIALIZING; |
fceaf24a | 722 | |
9c26aa0d | 723 | ret = rndis_filter_send_request(dev, request); |
0120ee0d | 724 | if (ret != 0) { |
c2a4efdd | 725 | dev->state = RNDIS_DEV_UNINITIALIZED; |
1c627870 | 726 | goto cleanup; |
fceaf24a HJ |
727 | } |
728 | ||
0c3b7b2f | 729 | |
5c5781b3 | 730 | t = wait_for_completion_timeout(&request->wait_event, 5*HZ); |
98d79690 S |
731 | |
732 | if (t == 0) { | |
0c3b7b2f | 733 | ret = -ETIMEDOUT; |
1c627870 | 734 | goto cleanup; |
0c3b7b2f | 735 | } |
fceaf24a | 736 | |
a388eb17 HZ |
737 | init_complete = &request->response_msg.msg.init_complete; |
738 | status = init_complete->status; | |
0120ee0d | 739 | if (status == RNDIS_STATUS_SUCCESS) { |
c2a4efdd | 740 | dev->state = RNDIS_DEV_INITIALIZED; |
fceaf24a | 741 | ret = 0; |
0120ee0d | 742 | } else { |
c2a4efdd | 743 | dev->state = RNDIS_DEV_UNINITIALIZED; |
bc49b926 | 744 | ret = -EINVAL; |
fceaf24a HJ |
745 | } |
746 | ||
1c627870 | 747 | cleanup: |
fceaf24a | 748 | if (request) |
9c26aa0d | 749 | put_rndis_request(dev, request); |
fceaf24a HJ |
750 | |
751 | return ret; | |
752 | } | |
753 | ||
9c26aa0d | 754 | static void rndis_filter_halt_device(struct rndis_device *dev) |
fceaf24a | 755 | { |
e681b954 | 756 | struct rndis_request *request; |
9f33d054 | 757 | struct rndis_halt_request *halt; |
ae9e63bb HZ |
758 | struct netvsc_device *nvdev = dev->net_dev; |
759 | struct hv_device *hdev = nvdev->dev; | |
760 | ulong flags; | |
fceaf24a | 761 | |
454f18a9 | 762 | /* Attempt to do a rndis device halt */ |
51491167 | 763 | request = get_rndis_request(dev, RNDIS_MSG_HALT, |
0120ee0d | 764 | RNDIS_MESSAGE_SIZE(struct rndis_halt_request)); |
fceaf24a | 765 | if (!request) |
1c627870 | 766 | goto cleanup; |
fceaf24a | 767 | |
454f18a9 | 768 | /* Setup the rndis set */ |
a388eb17 HZ |
769 | halt = &request->request_msg.msg.halt_req; |
770 | halt->req_id = atomic_inc_return(&dev->new_req_id); | |
fceaf24a | 771 | |
454f18a9 | 772 | /* Ignore return since this msg is optional. */ |
9c26aa0d | 773 | rndis_filter_send_request(dev, request); |
fceaf24a | 774 | |
c2a4efdd | 775 | dev->state = RNDIS_DEV_UNINITIALIZED; |
fceaf24a | 776 | |
1c627870 | 777 | cleanup: |
ae9e63bb HZ |
778 | spin_lock_irqsave(&hdev->channel->inbound_lock, flags); |
779 | nvdev->destroy = true; | |
780 | spin_unlock_irqrestore(&hdev->channel->inbound_lock, flags); | |
781 | ||
782 | /* Wait for all send completions */ | |
783 | wait_event(nvdev->wait_drain, | |
784 | atomic_read(&nvdev->num_outstanding_sends) == 0); | |
785 | ||
fceaf24a | 786 | if (request) |
9c26aa0d | 787 | put_rndis_request(dev, request); |
fceaf24a HJ |
788 | return; |
789 | } | |
790 | ||
9c26aa0d | 791 | static int rndis_filter_open_device(struct rndis_device *dev) |
fceaf24a | 792 | { |
0120ee0d | 793 | int ret; |
fceaf24a | 794 | |
c2a4efdd | 795 | if (dev->state != RNDIS_DEV_INITIALIZED) |
fceaf24a HJ |
796 | return 0; |
797 | ||
9c26aa0d | 798 | ret = rndis_filter_set_packet_filter(dev, |
0120ee0d | 799 | NDIS_PACKET_TYPE_BROADCAST | |
95beae90 | 800 | NDIS_PACKET_TYPE_ALL_MULTICAST | |
0120ee0d | 801 | NDIS_PACKET_TYPE_DIRECTED); |
fceaf24a | 802 | if (ret == 0) |
c2a4efdd | 803 | dev->state = RNDIS_DEV_DATAINITIALIZED; |
fceaf24a | 804 | |
fceaf24a HJ |
805 | return ret; |
806 | } | |
807 | ||
9c26aa0d | 808 | static int rndis_filter_close_device(struct rndis_device *dev) |
fceaf24a HJ |
809 | { |
810 | int ret; | |
811 | ||
c2a4efdd | 812 | if (dev->state != RNDIS_DEV_DATAINITIALIZED) |
fceaf24a HJ |
813 | return 0; |
814 | ||
9c26aa0d | 815 | ret = rndis_filter_set_packet_filter(dev, 0); |
fceaf24a | 816 | if (ret == 0) |
c2a4efdd | 817 | dev->state = RNDIS_DEV_INITIALIZED; |
fceaf24a | 818 | |
fceaf24a HJ |
819 | return ret; |
820 | } | |
821 | ||
bdbad576 | 822 | int rndis_filter_device_add(struct hv_device *dev, |
c2a4efdd | 823 | void *additional_info) |
fceaf24a HJ |
824 | { |
825 | int ret; | |
86c921af | 826 | struct netvsc_device *net_device; |
b13cc345 | 827 | struct rndis_device *rndis_device; |
3c4debad | 828 | struct netvsc_device_info *device_info = additional_info; |
fceaf24a | 829 | |
b13cc345 S |
830 | rndis_device = get_rndis_device(); |
831 | if (!rndis_device) | |
327efbae | 832 | return -ENODEV; |
fceaf24a | 833 | |
0120ee0d GKH |
834 | /* |
835 | * Let the inner driver handle this first to create the netvsc channel | |
836 | * NOTE! Once the channel is created, we may get a receive callback | |
837 | * (RndisFilterOnReceive()) before this call is completed | |
838 | */ | |
ce5bf661 | 839 | ret = netvsc_device_add(dev, additional_info); |
0120ee0d | 840 | if (ret != 0) { |
b13cc345 | 841 | kfree(rndis_device); |
fceaf24a HJ |
842 | return ret; |
843 | } | |
844 | ||
454f18a9 BP |
845 | |
846 | /* Initialize the rndis device */ | |
86c921af | 847 | net_device = hv_get_drvdata(dev); |
fceaf24a | 848 | |
b13cc345 S |
849 | net_device->extension = rndis_device; |
850 | rndis_device->net_dev = net_device; | |
fceaf24a | 851 | |
454f18a9 | 852 | /* Send the rndis initialization message */ |
b13cc345 | 853 | ret = rndis_filter_init_device(rndis_device); |
0120ee0d | 854 | if (ret != 0) { |
5243e7bd HZ |
855 | rndis_filter_device_remove(dev); |
856 | return ret; | |
fceaf24a HJ |
857 | } |
858 | ||
454f18a9 | 859 | /* Get the mac address */ |
b13cc345 | 860 | ret = rndis_filter_query_device_mac(rndis_device); |
0120ee0d | 861 | if (ret != 0) { |
5243e7bd HZ |
862 | rndis_filter_device_remove(dev); |
863 | return ret; | |
fceaf24a HJ |
864 | } |
865 | ||
3c4debad | 866 | memcpy(device_info->mac_adr, rndis_device->hw_mac_adr, ETH_ALEN); |
fceaf24a | 867 | |
b13cc345 | 868 | rndis_filter_query_device_link_status(rndis_device); |
fceaf24a | 869 | |
6f27457b | 870 | device_info->link_state = rndis_device->link_state; |
eb335bc4 | 871 | |
6f27457b | 872 | dev_info(&dev->device, "Device MAC %pM link state %s\n", |
b13cc345 | 873 | rndis_device->hw_mac_adr, |
6f27457b | 874 | device_info->link_state ? "down" : "up"); |
fceaf24a | 875 | |
fceaf24a HJ |
876 | return ret; |
877 | } | |
878 | ||
df06bcff | 879 | void rndis_filter_device_remove(struct hv_device *dev) |
fceaf24a | 880 | { |
2ddd5e5f | 881 | struct netvsc_device *net_dev = hv_get_drvdata(dev); |
53d21fdb | 882 | struct rndis_device *rndis_dev = net_dev->extension; |
fceaf24a | 883 | |
454f18a9 | 884 | /* Halt and release the rndis device */ |
9c26aa0d | 885 | rndis_filter_halt_device(rndis_dev); |
fceaf24a | 886 | |
c2a4efdd | 887 | kfree(rndis_dev); |
53d21fdb | 888 | net_dev->extension = NULL; |
fceaf24a | 889 | |
3fae5c8f | 890 | netvsc_device_remove(dev); |
fceaf24a HJ |
891 | } |
892 | ||
fceaf24a | 893 | |
9c26aa0d | 894 | int rndis_filter_open(struct hv_device *dev) |
fceaf24a | 895 | { |
86c921af | 896 | struct netvsc_device *net_device = hv_get_drvdata(dev); |
fceaf24a | 897 | |
86c921af | 898 | if (!net_device) |
8a62d716 BP |
899 | return -EINVAL; |
900 | ||
86c921af | 901 | return rndis_filter_open_device(net_device->extension); |
fceaf24a HJ |
902 | } |
903 | ||
9c26aa0d | 904 | int rndis_filter_close(struct hv_device *dev) |
fceaf24a | 905 | { |
5fccab3b | 906 | struct netvsc_device *nvdev = hv_get_drvdata(dev); |
fceaf24a | 907 | |
5fccab3b | 908 | if (!nvdev) |
8a62d716 BP |
909 | return -EINVAL; |
910 | ||
5fccab3b | 911 | return rndis_filter_close_device(nvdev->extension); |
fceaf24a | 912 | } |