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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 | |
5b54dac8 | 34 | #define RNDIS_EXT_LEN PAGE_SIZE |
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 | |
5b54dac8 HZ |
97 | request->pkt.q_idx = 0; |
98 | ||
0120ee0d GKH |
99 | /* |
100 | * Set the request id. This field is always after the rndis header for | |
101 | * request/response packet types so we just used the SetRequest as a | |
102 | * template | |
103 | */ | |
a388eb17 HZ |
104 | set = &rndis_msg->msg.set_req; |
105 | set->req_id = atomic_inc_return(&dev->new_req_id); | |
fceaf24a | 106 | |
454f18a9 | 107 | /* Add to the request list */ |
c2a4efdd HZ |
108 | spin_lock_irqsave(&dev->request_lock, flags); |
109 | list_add_tail(&request->list_ent, &dev->req_list); | |
110 | spin_unlock_irqrestore(&dev->request_lock, flags); | |
fceaf24a HJ |
111 | |
112 | return request; | |
113 | } | |
114 | ||
9c26aa0d | 115 | static void put_rndis_request(struct rndis_device *dev, |
c2a4efdd | 116 | struct rndis_request *req) |
fceaf24a | 117 | { |
880fb89c GKH |
118 | unsigned long flags; |
119 | ||
c2a4efdd HZ |
120 | spin_lock_irqsave(&dev->request_lock, flags); |
121 | list_del(&req->list_ent); | |
122 | spin_unlock_irqrestore(&dev->request_lock, flags); | |
fceaf24a | 123 | |
c2a4efdd | 124 | kfree(req); |
fceaf24a HJ |
125 | } |
126 | ||
729a2849 HZ |
127 | static void dump_rndis_message(struct hv_device *hv_dev, |
128 | struct rndis_message *rndis_msg) | |
fceaf24a | 129 | { |
2ddd5e5f S |
130 | struct net_device *netdev; |
131 | struct netvsc_device *net_device; | |
132 | ||
133 | net_device = hv_get_drvdata(hv_dev); | |
134 | netdev = net_device->ndev; | |
729a2849 | 135 | |
a388eb17 | 136 | switch (rndis_msg->ndis_msg_type) { |
51491167 LW |
137 | case RNDIS_MSG_PACKET: |
138 | netdev_dbg(netdev, "RNDIS_MSG_PACKET (len %u, " | |
0120ee0d GKH |
139 | "data offset %u data len %u, # oob %u, " |
140 | "oob offset %u, oob len %u, pkt offset %u, " | |
729a2849 | 141 | "pkt len %u\n", |
a388eb17 HZ |
142 | rndis_msg->msg_len, |
143 | rndis_msg->msg.pkt.data_offset, | |
144 | rndis_msg->msg.pkt.data_len, | |
145 | rndis_msg->msg.pkt.num_oob_data_elements, | |
146 | rndis_msg->msg.pkt.oob_data_offset, | |
147 | rndis_msg->msg.pkt.oob_data_len, | |
148 | rndis_msg->msg.pkt.per_pkt_info_offset, | |
149 | rndis_msg->msg.pkt.per_pkt_info_len); | |
fceaf24a HJ |
150 | break; |
151 | ||
51491167 LW |
152 | case RNDIS_MSG_INIT_C: |
153 | netdev_dbg(netdev, "RNDIS_MSG_INIT_C " | |
0120ee0d GKH |
154 | "(len %u, id 0x%x, status 0x%x, major %d, minor %d, " |
155 | "device flags %d, max xfer size 0x%x, max pkts %u, " | |
729a2849 | 156 | "pkt aligned %u)\n", |
a388eb17 HZ |
157 | rndis_msg->msg_len, |
158 | rndis_msg->msg.init_complete.req_id, | |
159 | rndis_msg->msg.init_complete.status, | |
160 | rndis_msg->msg.init_complete.major_ver, | |
161 | rndis_msg->msg.init_complete.minor_ver, | |
162 | rndis_msg->msg.init_complete.dev_flags, | |
163 | rndis_msg->msg.init_complete.max_xfer_size, | |
164 | rndis_msg->msg.init_complete. | |
165 | max_pkt_per_msg, | |
166 | rndis_msg->msg.init_complete. | |
167 | pkt_alignment_factor); | |
fceaf24a HJ |
168 | break; |
169 | ||
51491167 LW |
170 | case RNDIS_MSG_QUERY_C: |
171 | netdev_dbg(netdev, "RNDIS_MSG_QUERY_C " | |
0120ee0d | 172 | "(len %u, id 0x%x, status 0x%x, buf len %u, " |
729a2849 | 173 | "buf offset %u)\n", |
a388eb17 HZ |
174 | rndis_msg->msg_len, |
175 | rndis_msg->msg.query_complete.req_id, | |
176 | rndis_msg->msg.query_complete.status, | |
177 | rndis_msg->msg.query_complete. | |
178 | info_buflen, | |
179 | rndis_msg->msg.query_complete. | |
180 | info_buf_offset); | |
fceaf24a HJ |
181 | break; |
182 | ||
51491167 | 183 | case RNDIS_MSG_SET_C: |
729a2849 | 184 | netdev_dbg(netdev, |
51491167 | 185 | "RNDIS_MSG_SET_C (len %u, id 0x%x, status 0x%x)\n", |
a388eb17 HZ |
186 | rndis_msg->msg_len, |
187 | rndis_msg->msg.set_complete.req_id, | |
188 | rndis_msg->msg.set_complete.status); | |
fceaf24a HJ |
189 | break; |
190 | ||
51491167 LW |
191 | case RNDIS_MSG_INDICATE: |
192 | netdev_dbg(netdev, "RNDIS_MSG_INDICATE " | |
729a2849 | 193 | "(len %u, status 0x%x, buf len %u, buf offset %u)\n", |
a388eb17 HZ |
194 | rndis_msg->msg_len, |
195 | rndis_msg->msg.indicate_status.status, | |
196 | rndis_msg->msg.indicate_status.status_buflen, | |
197 | rndis_msg->msg.indicate_status.status_buf_offset); | |
fceaf24a HJ |
198 | break; |
199 | ||
200 | default: | |
729a2849 | 201 | netdev_dbg(netdev, "0x%x (len %u)\n", |
a388eb17 HZ |
202 | rndis_msg->ndis_msg_type, |
203 | rndis_msg->msg_len); | |
fceaf24a HJ |
204 | break; |
205 | } | |
206 | } | |
207 | ||
9c26aa0d | 208 | static int rndis_filter_send_request(struct rndis_device *dev, |
c2a4efdd | 209 | struct rndis_request *req) |
fceaf24a | 210 | { |
0120ee0d | 211 | int ret; |
4193d4f4 | 212 | struct hv_netvsc_packet *packet; |
fceaf24a | 213 | |
454f18a9 | 214 | /* Setup the packet to send it */ |
c2a4efdd | 215 | packet = &req->pkt; |
fceaf24a | 216 | |
72a2f5bd | 217 | packet->is_data_pkt = false; |
a388eb17 | 218 | packet->total_data_buflen = req->request_msg.msg_len; |
72a2f5bd | 219 | packet->page_buf_cnt = 1; |
fceaf24a | 220 | |
ca623ad3 | 221 | packet->page_buf[0].pfn = virt_to_phys(&req->request_msg) >> |
0120ee0d | 222 | PAGE_SHIFT; |
ca623ad3 HZ |
223 | packet->page_buf[0].len = req->request_msg.msg_len; |
224 | packet->page_buf[0].offset = | |
c2a4efdd | 225 | (unsigned long)&req->request_msg & (PAGE_SIZE - 1); |
fceaf24a | 226 | |
99e3fcfa HZ |
227 | /* Add one page_buf when request_msg crossing page boundary */ |
228 | if (packet->page_buf[0].offset + packet->page_buf[0].len > PAGE_SIZE) { | |
229 | packet->page_buf_cnt++; | |
230 | packet->page_buf[0].len = PAGE_SIZE - | |
231 | packet->page_buf[0].offset; | |
232 | packet->page_buf[1].pfn = virt_to_phys((void *)&req->request_msg | |
233 | + packet->page_buf[0].len) >> PAGE_SHIFT; | |
234 | packet->page_buf[1].offset = 0; | |
235 | packet->page_buf[1].len = req->request_msg.msg_len - | |
236 | packet->page_buf[0].len; | |
237 | } | |
238 | ||
893f6627 | 239 | packet->send_completion = NULL; |
7c3877f2 | 240 | packet->xmit_more = false; |
fceaf24a | 241 | |
0ec6ff40 | 242 | ret = netvsc_send(dev->net_dev->dev, packet); |
fceaf24a HJ |
243 | return ret; |
244 | } | |
245 | ||
1b07da51 HZ |
246 | static void rndis_set_link_state(struct rndis_device *rdev, |
247 | struct rndis_request *request) | |
248 | { | |
249 | u32 link_status; | |
250 | struct rndis_query_complete *query_complete; | |
251 | ||
252 | query_complete = &request->response_msg.msg.query_complete; | |
253 | ||
254 | if (query_complete->status == RNDIS_STATUS_SUCCESS && | |
255 | query_complete->info_buflen == sizeof(u32)) { | |
256 | memcpy(&link_status, (void *)((unsigned long)query_complete + | |
257 | query_complete->info_buf_offset), sizeof(u32)); | |
258 | rdev->link_state = link_status != 0; | |
259 | } | |
260 | } | |
261 | ||
9c26aa0d | 262 | static void rndis_filter_receive_response(struct rndis_device *dev, |
c2a4efdd | 263 | struct rndis_message *resp) |
fceaf24a | 264 | { |
e681b954 | 265 | struct rndis_request *request = NULL; |
0e727613 | 266 | bool found = false; |
880fb89c | 267 | unsigned long flags; |
2ddd5e5f S |
268 | struct net_device *ndev; |
269 | ||
270 | ndev = dev->net_dev->ndev; | |
fceaf24a | 271 | |
c2a4efdd HZ |
272 | spin_lock_irqsave(&dev->request_lock, flags); |
273 | list_for_each_entry(request, &dev->req_list, list_ent) { | |
0120ee0d GKH |
274 | /* |
275 | * All request/response message contains RequestId as the 1st | |
276 | * field | |
277 | */ | |
a388eb17 HZ |
278 | if (request->request_msg.msg.init_req.req_id |
279 | == resp->msg.init_complete.req_id) { | |
0e727613 | 280 | found = true; |
fceaf24a HJ |
281 | break; |
282 | } | |
283 | } | |
c2a4efdd | 284 | spin_unlock_irqrestore(&dev->request_lock, flags); |
fceaf24a | 285 | |
0120ee0d | 286 | if (found) { |
a3a6cab5 HZ |
287 | if (resp->msg_len <= |
288 | sizeof(struct rndis_message) + RNDIS_EXT_LEN) { | |
c2a4efdd | 289 | memcpy(&request->response_msg, resp, |
a388eb17 | 290 | resp->msg_len); |
1b07da51 HZ |
291 | if (request->request_msg.ndis_msg_type == |
292 | RNDIS_MSG_QUERY && request->request_msg.msg. | |
293 | query_req.oid == RNDIS_OID_GEN_MEDIA_CONNECT_STATUS) | |
294 | rndis_set_link_state(dev, request); | |
0120ee0d | 295 | } else { |
d9871158 | 296 | netdev_err(ndev, |
eb335bc4 HJ |
297 | "rndis response buffer overflow " |
298 | "detected (size %u max %zu)\n", | |
299 | resp->msg_len, | |
86eedacc | 300 | sizeof(struct rndis_message)); |
0120ee0d | 301 | |
a388eb17 | 302 | if (resp->ndis_msg_type == |
51491167 | 303 | RNDIS_MSG_RESET_C) { |
0120ee0d | 304 | /* does not have a request id field */ |
a388eb17 | 305 | request->response_msg.msg.reset_complete. |
007e5c8e | 306 | status = RNDIS_STATUS_BUFFER_OVERFLOW; |
0120ee0d | 307 | } else { |
a388eb17 HZ |
308 | request->response_msg.msg. |
309 | init_complete.status = | |
007e5c8e | 310 | RNDIS_STATUS_BUFFER_OVERFLOW; |
fceaf24a HJ |
311 | } |
312 | } | |
313 | ||
98d79690 | 314 | complete(&request->wait_event); |
0120ee0d | 315 | } else { |
d9871158 | 316 | netdev_err(ndev, |
eb335bc4 HJ |
317 | "no rndis request found for this response " |
318 | "(id 0x%x res type 0x%x)\n", | |
319 | resp->msg.init_complete.req_id, | |
320 | resp->ndis_msg_type); | |
fceaf24a | 321 | } |
fceaf24a HJ |
322 | } |
323 | ||
1f5f3a75 HZ |
324 | /* |
325 | * Get the Per-Packet-Info with the specified type | |
326 | * return NULL if not found. | |
327 | */ | |
328 | static inline void *rndis_get_ppi(struct rndis_packet *rpkt, u32 type) | |
329 | { | |
330 | struct rndis_per_packet_info *ppi; | |
331 | int len; | |
332 | ||
333 | if (rpkt->per_pkt_info_offset == 0) | |
334 | return NULL; | |
335 | ||
336 | ppi = (struct rndis_per_packet_info *)((ulong)rpkt + | |
337 | rpkt->per_pkt_info_offset); | |
338 | len = rpkt->per_pkt_info_len; | |
339 | ||
340 | while (len > 0) { | |
341 | if (ppi->type == type) | |
342 | return (void *)((ulong)ppi + ppi->ppi_offset); | |
343 | len -= ppi->size; | |
344 | ppi = (struct rndis_per_packet_info *)((ulong)ppi + ppi->size); | |
345 | } | |
346 | ||
347 | return NULL; | |
348 | } | |
349 | ||
9c26aa0d | 350 | static void rndis_filter_receive_data(struct rndis_device *dev, |
c2a4efdd HZ |
351 | struct rndis_message *msg, |
352 | struct hv_netvsc_packet *pkt) | |
fceaf24a | 353 | { |
c2a4efdd HZ |
354 | struct rndis_packet *rndis_pkt; |
355 | u32 data_offset; | |
1f5f3a75 | 356 | struct ndis_pkt_8021q_info *vlan; |
e3d605ed | 357 | struct ndis_tcp_ip_checksum_info *csum_info; |
fceaf24a | 358 | |
a388eb17 | 359 | rndis_pkt = &msg->msg.pkt; |
fceaf24a | 360 | |
454f18a9 | 361 | /* Remove the rndis header and pass it back up the stack */ |
a388eb17 | 362 | data_offset = RNDIS_HEADER_SIZE + rndis_pkt->data_offset; |
fceaf24a | 363 | |
72a2f5bd | 364 | pkt->total_data_buflen -= data_offset; |
4b8a8bc9 WY |
365 | |
366 | /* | |
367 | * Make sure we got a valid RNDIS message, now total_data_buflen | |
368 | * should be the data packet size plus the trailer padding size | |
369 | */ | |
370 | if (pkt->total_data_buflen < rndis_pkt->data_len) { | |
371 | netdev_err(dev->net_dev->ndev, "rndis message buffer " | |
372 | "overflow detected (got %u, min %u)" | |
373 | "...dropping this message!\n", | |
374 | pkt->total_data_buflen, rndis_pkt->data_len); | |
375 | return; | |
376 | } | |
377 | ||
378 | /* | |
379 | * Remove the rndis trailer padding from rndis packet message | |
380 | * rndis_pkt->data_len tell us the real data length, we only copy | |
381 | * the data packet to the stack, without the rndis trailer padding | |
382 | */ | |
383 | pkt->total_data_buflen = rndis_pkt->data_len; | |
45326342 | 384 | pkt->data = (void *)((unsigned long)pkt->data + data_offset); |
669c1fc6 | 385 | |
1f5f3a75 HZ |
386 | vlan = rndis_get_ppi(rndis_pkt, IEEE_8021Q_INFO); |
387 | if (vlan) { | |
388 | pkt->vlan_tci = VLAN_TAG_PRESENT | vlan->vlanid | | |
389 | (vlan->pri << VLAN_PRIO_SHIFT); | |
390 | } else { | |
391 | pkt->vlan_tci = 0; | |
392 | } | |
393 | ||
e3d605ed KS |
394 | csum_info = rndis_get_ppi(rndis_pkt, TCPIP_CHKSUM_PKTINFO); |
395 | netvsc_recv_callback(dev->net_dev->dev, pkt, csum_info); | |
fceaf24a HJ |
396 | } |
397 | ||
5fcc4115 | 398 | int rndis_filter_receive(struct hv_device *dev, |
c2a4efdd | 399 | struct hv_netvsc_packet *pkt) |
fceaf24a | 400 | { |
2ddd5e5f | 401 | struct netvsc_device *net_dev = hv_get_drvdata(dev); |
c2a4efdd | 402 | struct rndis_device *rndis_dev; |
ef31bef6 | 403 | struct rndis_message *rndis_msg; |
2ddd5e5f | 404 | struct net_device *ndev; |
63f6921d | 405 | int ret = 0; |
2ddd5e5f | 406 | |
63f6921d HZ |
407 | if (!net_dev) { |
408 | ret = -EINVAL; | |
409 | goto exit; | |
410 | } | |
8a62d716 | 411 | |
715a4801 S |
412 | ndev = net_dev->ndev; |
413 | ||
454f18a9 | 414 | /* Make sure the rndis device state is initialized */ |
53d21fdb | 415 | if (!net_dev->extension) { |
d9871158 | 416 | netdev_err(ndev, "got rndis message but no rndis device - " |
eb335bc4 | 417 | "dropping this message!\n"); |
63f6921d HZ |
418 | ret = -ENODEV; |
419 | goto exit; | |
fceaf24a HJ |
420 | } |
421 | ||
53d21fdb | 422 | rndis_dev = (struct rndis_device *)net_dev->extension; |
c2a4efdd | 423 | if (rndis_dev->state == RNDIS_DEV_UNINITIALIZED) { |
d9871158 | 424 | netdev_err(ndev, "got rndis message but rndis device " |
eb335bc4 | 425 | "uninitialized...dropping this message!\n"); |
63f6921d HZ |
426 | ret = -ENODEV; |
427 | goto exit; | |
fceaf24a HJ |
428 | } |
429 | ||
ef31bef6 | 430 | rndis_msg = pkt->data; |
fceaf24a | 431 | |
ef31bef6 | 432 | dump_rndis_message(dev, rndis_msg); |
fceaf24a | 433 | |
ef31bef6 | 434 | switch (rndis_msg->ndis_msg_type) { |
51491167 | 435 | case RNDIS_MSG_PACKET: |
0120ee0d | 436 | /* data msg */ |
ef31bef6 | 437 | rndis_filter_receive_data(rndis_dev, rndis_msg, pkt); |
fceaf24a HJ |
438 | break; |
439 | ||
51491167 LW |
440 | case RNDIS_MSG_INIT_C: |
441 | case RNDIS_MSG_QUERY_C: | |
442 | case RNDIS_MSG_SET_C: | |
0120ee0d | 443 | /* completion msgs */ |
ef31bef6 | 444 | rndis_filter_receive_response(rndis_dev, rndis_msg); |
fceaf24a HJ |
445 | break; |
446 | ||
51491167 | 447 | case RNDIS_MSG_INDICATE: |
0120ee0d | 448 | /* notification msgs */ |
3a494e71 | 449 | netvsc_linkstatus_callback(dev, rndis_msg); |
fceaf24a HJ |
450 | break; |
451 | default: | |
d9871158 | 452 | netdev_err(ndev, |
eb335bc4 | 453 | "unhandled rndis message (type %u len %u)\n", |
ef31bef6 HZ |
454 | rndis_msg->ndis_msg_type, |
455 | rndis_msg->msg_len); | |
fceaf24a HJ |
456 | break; |
457 | } | |
458 | ||
63f6921d HZ |
459 | exit: |
460 | if (ret != 0) | |
461 | pkt->status = NVSP_STAT_FAIL; | |
462 | ||
463 | return ret; | |
fceaf24a HJ |
464 | } |
465 | ||
9c26aa0d | 466 | static int rndis_filter_query_device(struct rndis_device *dev, u32 oid, |
c2a4efdd | 467 | void *result, u32 *result_size) |
fceaf24a | 468 | { |
e681b954 | 469 | struct rndis_request *request; |
c2a4efdd | 470 | u32 inresult_size = *result_size; |
9f33d054 | 471 | struct rndis_query_request *query; |
c2a4efdd | 472 | struct rndis_query_complete *query_complete; |
0120ee0d | 473 | int ret = 0; |
999028cc | 474 | unsigned long t; |
fceaf24a | 475 | |
c2a4efdd | 476 | if (!result) |
8a62d716 | 477 | return -EINVAL; |
fceaf24a | 478 | |
c2a4efdd | 479 | *result_size = 0; |
51491167 | 480 | request = get_rndis_request(dev, RNDIS_MSG_QUERY, |
0120ee0d GKH |
481 | RNDIS_MESSAGE_SIZE(struct rndis_query_request)); |
482 | if (!request) { | |
de6e0580 | 483 | ret = -ENOMEM; |
1c627870 | 484 | goto cleanup; |
fceaf24a HJ |
485 | } |
486 | ||
454f18a9 | 487 | /* Setup the rndis query */ |
a388eb17 HZ |
488 | query = &request->request_msg.msg.query_req; |
489 | query->oid = oid; | |
490 | query->info_buf_offset = sizeof(struct rndis_query_request); | |
491 | query->info_buflen = 0; | |
492 | query->dev_vc_handle = 0; | |
fceaf24a | 493 | |
5b54dac8 HZ |
494 | if (oid == OID_GEN_RECEIVE_SCALE_CAPABILITIES) { |
495 | struct ndis_recv_scale_cap *cap; | |
496 | ||
497 | request->request_msg.msg_len += | |
498 | sizeof(struct ndis_recv_scale_cap); | |
499 | query->info_buflen = sizeof(struct ndis_recv_scale_cap); | |
500 | cap = (struct ndis_recv_scale_cap *)((unsigned long)query + | |
501 | query->info_buf_offset); | |
502 | cap->hdr.type = NDIS_OBJECT_TYPE_RSS_CAPABILITIES; | |
503 | cap->hdr.rev = NDIS_RECEIVE_SCALE_CAPABILITIES_REVISION_2; | |
504 | cap->hdr.size = sizeof(struct ndis_recv_scale_cap); | |
505 | } | |
506 | ||
9c26aa0d | 507 | ret = rndis_filter_send_request(dev, request); |
fceaf24a | 508 | if (ret != 0) |
1c627870 | 509 | goto cleanup; |
fceaf24a | 510 | |
5c5781b3 | 511 | t = wait_for_completion_timeout(&request->wait_event, 5*HZ); |
98d79690 | 512 | if (t == 0) { |
0c3b7b2f | 513 | ret = -ETIMEDOUT; |
1c627870 | 514 | goto cleanup; |
0c3b7b2f | 515 | } |
fceaf24a | 516 | |
454f18a9 | 517 | /* Copy the response back */ |
a388eb17 | 518 | query_complete = &request->response_msg.msg.query_complete; |
fceaf24a | 519 | |
a388eb17 | 520 | if (query_complete->info_buflen > inresult_size) { |
fceaf24a | 521 | ret = -1; |
1c627870 | 522 | goto cleanup; |
fceaf24a HJ |
523 | } |
524 | ||
c2a4efdd HZ |
525 | memcpy(result, |
526 | (void *)((unsigned long)query_complete + | |
a388eb17 HZ |
527 | query_complete->info_buf_offset), |
528 | query_complete->info_buflen); | |
fceaf24a | 529 | |
a388eb17 | 530 | *result_size = query_complete->info_buflen; |
fceaf24a | 531 | |
1c627870 | 532 | cleanup: |
fceaf24a | 533 | if (request) |
9c26aa0d | 534 | put_rndis_request(dev, request); |
fceaf24a HJ |
535 | |
536 | return ret; | |
537 | } | |
538 | ||
9c26aa0d | 539 | static int rndis_filter_query_device_mac(struct rndis_device *dev) |
fceaf24a | 540 | { |
9f8bd8ba | 541 | u32 size = ETH_ALEN; |
fceaf24a | 542 | |
9c26aa0d | 543 | return rndis_filter_query_device(dev, |
0120ee0d | 544 | RNDIS_OID_802_3_PERMANENT_ADDRESS, |
c2a4efdd | 545 | dev->hw_mac_adr, &size); |
fceaf24a HJ |
546 | } |
547 | ||
1ce09e89 HZ |
548 | #define NWADR_STR "NetworkAddress" |
549 | #define NWADR_STRLEN 14 | |
550 | ||
551 | int rndis_filter_set_device_mac(struct hv_device *hdev, char *mac) | |
552 | { | |
553 | struct netvsc_device *nvdev = hv_get_drvdata(hdev); | |
554 | struct rndis_device *rdev = nvdev->extension; | |
555 | struct net_device *ndev = nvdev->ndev; | |
556 | struct rndis_request *request; | |
557 | struct rndis_set_request *set; | |
558 | struct rndis_config_parameter_info *cpi; | |
559 | wchar_t *cfg_nwadr, *cfg_mac; | |
560 | struct rndis_set_complete *set_complete; | |
561 | char macstr[2*ETH_ALEN+1]; | |
562 | u32 extlen = sizeof(struct rndis_config_parameter_info) + | |
563 | 2*NWADR_STRLEN + 4*ETH_ALEN; | |
999028cc NMG |
564 | int ret; |
565 | unsigned long t; | |
1ce09e89 HZ |
566 | |
567 | request = get_rndis_request(rdev, RNDIS_MSG_SET, | |
568 | RNDIS_MESSAGE_SIZE(struct rndis_set_request) + extlen); | |
569 | if (!request) | |
570 | return -ENOMEM; | |
571 | ||
572 | set = &request->request_msg.msg.set_req; | |
573 | set->oid = RNDIS_OID_GEN_RNDIS_CONFIG_PARAMETER; | |
574 | set->info_buflen = extlen; | |
575 | set->info_buf_offset = sizeof(struct rndis_set_request); | |
576 | set->dev_vc_handle = 0; | |
577 | ||
578 | cpi = (struct rndis_config_parameter_info *)((ulong)set + | |
579 | set->info_buf_offset); | |
580 | cpi->parameter_name_offset = | |
581 | sizeof(struct rndis_config_parameter_info); | |
582 | /* Multiply by 2 because host needs 2 bytes (utf16) for each char */ | |
583 | cpi->parameter_name_length = 2*NWADR_STRLEN; | |
584 | cpi->parameter_type = RNDIS_CONFIG_PARAM_TYPE_STRING; | |
585 | cpi->parameter_value_offset = | |
586 | cpi->parameter_name_offset + cpi->parameter_name_length; | |
587 | /* Multiply by 4 because each MAC byte displayed as 2 utf16 chars */ | |
588 | cpi->parameter_value_length = 4*ETH_ALEN; | |
589 | ||
590 | cfg_nwadr = (wchar_t *)((ulong)cpi + cpi->parameter_name_offset); | |
591 | cfg_mac = (wchar_t *)((ulong)cpi + cpi->parameter_value_offset); | |
592 | ret = utf8s_to_utf16s(NWADR_STR, NWADR_STRLEN, UTF16_HOST_ENDIAN, | |
593 | cfg_nwadr, NWADR_STRLEN); | |
594 | if (ret < 0) | |
595 | goto cleanup; | |
596 | snprintf(macstr, 2*ETH_ALEN+1, "%pm", mac); | |
597 | ret = utf8s_to_utf16s(macstr, 2*ETH_ALEN, UTF16_HOST_ENDIAN, | |
598 | cfg_mac, 2*ETH_ALEN); | |
599 | if (ret < 0) | |
600 | goto cleanup; | |
601 | ||
602 | ret = rndis_filter_send_request(rdev, request); | |
603 | if (ret != 0) | |
604 | goto cleanup; | |
605 | ||
606 | t = wait_for_completion_timeout(&request->wait_event, 5*HZ); | |
607 | if (t == 0) { | |
608 | netdev_err(ndev, "timeout before we got a set response...\n"); | |
609 | /* | |
610 | * can't put_rndis_request, since we may still receive a | |
611 | * send-completion. | |
612 | */ | |
613 | return -EBUSY; | |
614 | } else { | |
615 | set_complete = &request->response_msg.msg.set_complete; | |
b02a8067 HZ |
616 | if (set_complete->status != RNDIS_STATUS_SUCCESS) { |
617 | netdev_err(ndev, "Fail to set MAC on host side:0x%x\n", | |
618 | set_complete->status); | |
1ce09e89 | 619 | ret = -EINVAL; |
b02a8067 | 620 | } |
1ce09e89 HZ |
621 | } |
622 | ||
623 | cleanup: | |
624 | put_rndis_request(rdev, request); | |
625 | return ret; | |
626 | } | |
627 | ||
da19fcd0 LP |
628 | static int |
629 | rndis_filter_set_offload_params(struct hv_device *hdev, | |
4a0e70ae KS |
630 | struct ndis_offload_params *req_offloads) |
631 | { | |
632 | struct netvsc_device *nvdev = hv_get_drvdata(hdev); | |
633 | struct rndis_device *rdev = nvdev->extension; | |
634 | struct net_device *ndev = nvdev->ndev; | |
635 | struct rndis_request *request; | |
636 | struct rndis_set_request *set; | |
637 | struct ndis_offload_params *offload_params; | |
638 | struct rndis_set_complete *set_complete; | |
639 | u32 extlen = sizeof(struct ndis_offload_params); | |
999028cc NMG |
640 | int ret; |
641 | unsigned long t; | |
af9893a3 KS |
642 | u32 vsp_version = nvdev->nvsp_version; |
643 | ||
644 | if (vsp_version <= NVSP_PROTOCOL_VERSION_4) { | |
645 | extlen = VERSION_4_OFFLOAD_SIZE; | |
646 | /* On NVSP_PROTOCOL_VERSION_4 and below, we do not support | |
647 | * UDP checksum offload. | |
648 | */ | |
649 | req_offloads->udp_ip_v4_csum = 0; | |
650 | req_offloads->udp_ip_v6_csum = 0; | |
651 | } | |
4a0e70ae KS |
652 | |
653 | request = get_rndis_request(rdev, RNDIS_MSG_SET, | |
654 | RNDIS_MESSAGE_SIZE(struct rndis_set_request) + extlen); | |
655 | if (!request) | |
656 | return -ENOMEM; | |
657 | ||
658 | set = &request->request_msg.msg.set_req; | |
659 | set->oid = OID_TCP_OFFLOAD_PARAMETERS; | |
660 | set->info_buflen = extlen; | |
661 | set->info_buf_offset = sizeof(struct rndis_set_request); | |
662 | set->dev_vc_handle = 0; | |
663 | ||
664 | offload_params = (struct ndis_offload_params *)((ulong)set + | |
665 | set->info_buf_offset); | |
666 | *offload_params = *req_offloads; | |
667 | offload_params->header.type = NDIS_OBJECT_TYPE_DEFAULT; | |
668 | offload_params->header.revision = NDIS_OFFLOAD_PARAMETERS_REVISION_3; | |
669 | offload_params->header.size = extlen; | |
670 | ||
671 | ret = rndis_filter_send_request(rdev, request); | |
672 | if (ret != 0) | |
673 | goto cleanup; | |
674 | ||
675 | t = wait_for_completion_timeout(&request->wait_event, 5*HZ); | |
676 | if (t == 0) { | |
677 | netdev_err(ndev, "timeout before we got aOFFLOAD set response...\n"); | |
678 | /* can't put_rndis_request, since we may still receive a | |
679 | * send-completion. | |
680 | */ | |
681 | return -EBUSY; | |
682 | } else { | |
683 | set_complete = &request->response_msg.msg.set_complete; | |
684 | if (set_complete->status != RNDIS_STATUS_SUCCESS) { | |
af9893a3 | 685 | netdev_err(ndev, "Fail to set offload on host side:0x%x\n", |
4a0e70ae KS |
686 | set_complete->status); |
687 | ret = -EINVAL; | |
688 | } | |
689 | } | |
690 | ||
691 | cleanup: | |
692 | put_rndis_request(rdev, request); | |
693 | return ret; | |
694 | } | |
1ce09e89 | 695 | |
5b54dac8 HZ |
696 | u8 netvsc_hash_key[HASH_KEYLEN] = { |
697 | 0x6d, 0x5a, 0x56, 0xda, 0x25, 0x5b, 0x0e, 0xc2, | |
698 | 0x41, 0x67, 0x25, 0x3d, 0x43, 0xa3, 0x8f, 0xb0, | |
699 | 0xd0, 0xca, 0x2b, 0xcb, 0xae, 0x7b, 0x30, 0xb4, | |
700 | 0x77, 0xcb, 0x2d, 0xa3, 0x80, 0x30, 0xf2, 0x0c, | |
701 | 0x6a, 0x42, 0xb7, 0x3b, 0xbe, 0xac, 0x01, 0xfa | |
702 | }; | |
703 | ||
da19fcd0 | 704 | static int rndis_filter_set_rss_param(struct rndis_device *rdev, int num_queue) |
5b54dac8 HZ |
705 | { |
706 | struct net_device *ndev = rdev->net_dev->ndev; | |
707 | struct rndis_request *request; | |
708 | struct rndis_set_request *set; | |
709 | struct rndis_set_complete *set_complete; | |
710 | u32 extlen = sizeof(struct ndis_recv_scale_param) + | |
711 | 4*ITAB_NUM + HASH_KEYLEN; | |
712 | struct ndis_recv_scale_param *rssp; | |
713 | u32 *itab; | |
714 | u8 *keyp; | |
999028cc NMG |
715 | int i, ret; |
716 | unsigned long t; | |
5b54dac8 HZ |
717 | |
718 | request = get_rndis_request( | |
719 | rdev, RNDIS_MSG_SET, | |
720 | RNDIS_MESSAGE_SIZE(struct rndis_set_request) + extlen); | |
721 | if (!request) | |
722 | return -ENOMEM; | |
723 | ||
724 | set = &request->request_msg.msg.set_req; | |
725 | set->oid = OID_GEN_RECEIVE_SCALE_PARAMETERS; | |
726 | set->info_buflen = extlen; | |
727 | set->info_buf_offset = sizeof(struct rndis_set_request); | |
728 | set->dev_vc_handle = 0; | |
729 | ||
730 | rssp = (struct ndis_recv_scale_param *)(set + 1); | |
731 | rssp->hdr.type = NDIS_OBJECT_TYPE_RSS_PARAMETERS; | |
732 | rssp->hdr.rev = NDIS_RECEIVE_SCALE_PARAMETERS_REVISION_2; | |
733 | rssp->hdr.size = sizeof(struct ndis_recv_scale_param); | |
734 | rssp->flag = 0; | |
735 | rssp->hashinfo = NDIS_HASH_FUNC_TOEPLITZ | NDIS_HASH_IPV4 | | |
4c87454a HZ |
736 | NDIS_HASH_TCP_IPV4 | NDIS_HASH_IPV6 | |
737 | NDIS_HASH_TCP_IPV6; | |
5b54dac8 HZ |
738 | rssp->indirect_tabsize = 4*ITAB_NUM; |
739 | rssp->indirect_taboffset = sizeof(struct ndis_recv_scale_param); | |
740 | rssp->hashkey_size = HASH_KEYLEN; | |
741 | rssp->kashkey_offset = rssp->indirect_taboffset + | |
742 | rssp->indirect_tabsize; | |
743 | ||
744 | /* Set indirection table entries */ | |
745 | itab = (u32 *)(rssp + 1); | |
746 | for (i = 0; i < ITAB_NUM; i++) | |
747 | itab[i] = i % num_queue; | |
748 | ||
749 | /* Set hask key values */ | |
750 | keyp = (u8 *)((unsigned long)rssp + rssp->kashkey_offset); | |
751 | for (i = 0; i < HASH_KEYLEN; i++) | |
752 | keyp[i] = netvsc_hash_key[i]; | |
753 | ||
754 | ||
755 | ret = rndis_filter_send_request(rdev, request); | |
756 | if (ret != 0) | |
757 | goto cleanup; | |
758 | ||
759 | t = wait_for_completion_timeout(&request->wait_event, 5*HZ); | |
760 | if (t == 0) { | |
761 | netdev_err(ndev, "timeout before we got a set response...\n"); | |
762 | /* can't put_rndis_request, since we may still receive a | |
763 | * send-completion. | |
764 | */ | |
765 | return -ETIMEDOUT; | |
766 | } else { | |
767 | set_complete = &request->response_msg.msg.set_complete; | |
768 | if (set_complete->status != RNDIS_STATUS_SUCCESS) { | |
769 | netdev_err(ndev, "Fail to set RSS parameters:0x%x\n", | |
770 | set_complete->status); | |
771 | ret = -EINVAL; | |
772 | } | |
773 | } | |
774 | ||
775 | cleanup: | |
776 | put_rndis_request(rdev, request); | |
777 | return ret; | |
778 | } | |
779 | ||
780 | ||
9c26aa0d | 781 | static int rndis_filter_query_device_link_status(struct rndis_device *dev) |
fceaf24a | 782 | { |
0120ee0d | 783 | u32 size = sizeof(u32); |
6f27457b S |
784 | u32 link_status; |
785 | int ret; | |
fceaf24a | 786 | |
6f27457b | 787 | ret = rndis_filter_query_device(dev, |
0120ee0d | 788 | RNDIS_OID_GEN_MEDIA_CONNECT_STATUS, |
6f27457b | 789 | &link_status, &size); |
6f27457b S |
790 | |
791 | return ret; | |
fceaf24a HJ |
792 | } |
793 | ||
d426b2e3 | 794 | int rndis_filter_set_packet_filter(struct rndis_device *dev, u32 new_filter) |
fceaf24a | 795 | { |
e681b954 | 796 | struct rndis_request *request; |
9f33d054 | 797 | struct rndis_set_request *set; |
c2a4efdd | 798 | struct rndis_set_complete *set_complete; |
4d643114 | 799 | u32 status; |
999028cc NMG |
800 | int ret; |
801 | unsigned long t; | |
2ddd5e5f S |
802 | struct net_device *ndev; |
803 | ||
804 | ndev = dev->net_dev->ndev; | |
fceaf24a | 805 | |
51491167 | 806 | request = get_rndis_request(dev, RNDIS_MSG_SET, |
0120ee0d GKH |
807 | RNDIS_MESSAGE_SIZE(struct rndis_set_request) + |
808 | sizeof(u32)); | |
809 | if (!request) { | |
58ef3977 | 810 | ret = -ENOMEM; |
1c627870 | 811 | goto cleanup; |
fceaf24a HJ |
812 | } |
813 | ||
454f18a9 | 814 | /* Setup the rndis set */ |
a388eb17 HZ |
815 | set = &request->request_msg.msg.set_req; |
816 | set->oid = RNDIS_OID_GEN_CURRENT_PACKET_FILTER; | |
817 | set->info_buflen = sizeof(u32); | |
818 | set->info_buf_offset = sizeof(struct rndis_set_request); | |
fceaf24a | 819 | |
0120ee0d | 820 | memcpy((void *)(unsigned long)set + sizeof(struct rndis_set_request), |
c2a4efdd | 821 | &new_filter, sizeof(u32)); |
fceaf24a | 822 | |
9c26aa0d | 823 | ret = rndis_filter_send_request(dev, request); |
fceaf24a | 824 | if (ret != 0) |
1c627870 | 825 | goto cleanup; |
fceaf24a | 826 | |
5c5781b3 | 827 | t = wait_for_completion_timeout(&request->wait_event, 5*HZ); |
98d79690 S |
828 | |
829 | if (t == 0) { | |
d9871158 | 830 | netdev_err(ndev, |
eb335bc4 | 831 | "timeout before we got a set response...\n"); |
ea496374 | 832 | ret = -ETIMEDOUT; |
0120ee0d | 833 | /* |
25985edc | 834 | * We can't deallocate the request since we may still receive a |
0120ee0d GKH |
835 | * send completion for it. |
836 | */ | |
5585d81e | 837 | goto exit; |
0120ee0d | 838 | } else { |
a388eb17 HZ |
839 | set_complete = &request->response_msg.msg.set_complete; |
840 | status = set_complete->status; | |
fceaf24a HJ |
841 | } |
842 | ||
1c627870 | 843 | cleanup: |
fceaf24a | 844 | if (request) |
9c26aa0d | 845 | put_rndis_request(dev, request); |
5585d81e | 846 | exit: |
fceaf24a HJ |
847 | return ret; |
848 | } | |
849 | ||
fceaf24a | 850 | |
9c26aa0d | 851 | static int rndis_filter_init_device(struct rndis_device *dev) |
fceaf24a | 852 | { |
e681b954 | 853 | struct rndis_request *request; |
9f33d054 | 854 | struct rndis_initialize_request *init; |
c2a4efdd | 855 | struct rndis_initialize_complete *init_complete; |
4d643114 | 856 | u32 status; |
999028cc NMG |
857 | int ret; |
858 | unsigned long t; | |
7c3877f2 | 859 | struct netvsc_device *nvdev = dev->net_dev; |
fceaf24a | 860 | |
51491167 | 861 | request = get_rndis_request(dev, RNDIS_MSG_INIT, |
0120ee0d GKH |
862 | RNDIS_MESSAGE_SIZE(struct rndis_initialize_request)); |
863 | if (!request) { | |
bc49b926 | 864 | ret = -ENOMEM; |
1c627870 | 865 | goto cleanup; |
fceaf24a HJ |
866 | } |
867 | ||
454f18a9 | 868 | /* Setup the rndis set */ |
a388eb17 HZ |
869 | init = &request->request_msg.msg.init_req; |
870 | init->major_ver = RNDIS_MAJOR_VERSION; | |
871 | init->minor_ver = RNDIS_MINOR_VERSION; | |
fb1d074e | 872 | init->max_xfer_size = 0x4000; |
fceaf24a | 873 | |
c2a4efdd | 874 | dev->state = RNDIS_DEV_INITIALIZING; |
fceaf24a | 875 | |
9c26aa0d | 876 | ret = rndis_filter_send_request(dev, request); |
0120ee0d | 877 | if (ret != 0) { |
c2a4efdd | 878 | dev->state = RNDIS_DEV_UNINITIALIZED; |
1c627870 | 879 | goto cleanup; |
fceaf24a HJ |
880 | } |
881 | ||
0c3b7b2f | 882 | |
5c5781b3 | 883 | t = wait_for_completion_timeout(&request->wait_event, 5*HZ); |
98d79690 S |
884 | |
885 | if (t == 0) { | |
0c3b7b2f | 886 | ret = -ETIMEDOUT; |
1c627870 | 887 | goto cleanup; |
0c3b7b2f | 888 | } |
fceaf24a | 889 | |
a388eb17 HZ |
890 | init_complete = &request->response_msg.msg.init_complete; |
891 | status = init_complete->status; | |
0120ee0d | 892 | if (status == RNDIS_STATUS_SUCCESS) { |
c2a4efdd | 893 | dev->state = RNDIS_DEV_INITIALIZED; |
7c3877f2 HZ |
894 | nvdev->max_pkt = init_complete->max_pkt_per_msg; |
895 | nvdev->pkt_align = 1 << init_complete->pkt_alignment_factor; | |
fceaf24a | 896 | ret = 0; |
0120ee0d | 897 | } else { |
c2a4efdd | 898 | dev->state = RNDIS_DEV_UNINITIALIZED; |
bc49b926 | 899 | ret = -EINVAL; |
fceaf24a HJ |
900 | } |
901 | ||
1c627870 | 902 | cleanup: |
fceaf24a | 903 | if (request) |
9c26aa0d | 904 | put_rndis_request(dev, request); |
fceaf24a HJ |
905 | |
906 | return ret; | |
907 | } | |
908 | ||
9c26aa0d | 909 | static void rndis_filter_halt_device(struct rndis_device *dev) |
fceaf24a | 910 | { |
e681b954 | 911 | struct rndis_request *request; |
9f33d054 | 912 | struct rndis_halt_request *halt; |
ae9e63bb HZ |
913 | struct netvsc_device *nvdev = dev->net_dev; |
914 | struct hv_device *hdev = nvdev->dev; | |
915 | ulong flags; | |
fceaf24a | 916 | |
454f18a9 | 917 | /* Attempt to do a rndis device halt */ |
51491167 | 918 | request = get_rndis_request(dev, RNDIS_MSG_HALT, |
0120ee0d | 919 | RNDIS_MESSAGE_SIZE(struct rndis_halt_request)); |
fceaf24a | 920 | if (!request) |
1c627870 | 921 | goto cleanup; |
fceaf24a | 922 | |
454f18a9 | 923 | /* Setup the rndis set */ |
a388eb17 HZ |
924 | halt = &request->request_msg.msg.halt_req; |
925 | halt->req_id = atomic_inc_return(&dev->new_req_id); | |
fceaf24a | 926 | |
454f18a9 | 927 | /* Ignore return since this msg is optional. */ |
9c26aa0d | 928 | rndis_filter_send_request(dev, request); |
fceaf24a | 929 | |
c2a4efdd | 930 | dev->state = RNDIS_DEV_UNINITIALIZED; |
fceaf24a | 931 | |
1c627870 | 932 | cleanup: |
ae9e63bb HZ |
933 | spin_lock_irqsave(&hdev->channel->inbound_lock, flags); |
934 | nvdev->destroy = true; | |
935 | spin_unlock_irqrestore(&hdev->channel->inbound_lock, flags); | |
936 | ||
937 | /* Wait for all send completions */ | |
938 | wait_event(nvdev->wait_drain, | |
939 | atomic_read(&nvdev->num_outstanding_sends) == 0); | |
940 | ||
fceaf24a | 941 | if (request) |
9c26aa0d | 942 | put_rndis_request(dev, request); |
fceaf24a HJ |
943 | return; |
944 | } | |
945 | ||
9c26aa0d | 946 | static int rndis_filter_open_device(struct rndis_device *dev) |
fceaf24a | 947 | { |
0120ee0d | 948 | int ret; |
fceaf24a | 949 | |
c2a4efdd | 950 | if (dev->state != RNDIS_DEV_INITIALIZED) |
fceaf24a HJ |
951 | return 0; |
952 | ||
9c26aa0d | 953 | ret = rndis_filter_set_packet_filter(dev, |
0120ee0d | 954 | NDIS_PACKET_TYPE_BROADCAST | |
95beae90 | 955 | NDIS_PACKET_TYPE_ALL_MULTICAST | |
0120ee0d | 956 | NDIS_PACKET_TYPE_DIRECTED); |
fceaf24a | 957 | if (ret == 0) |
c2a4efdd | 958 | dev->state = RNDIS_DEV_DATAINITIALIZED; |
fceaf24a | 959 | |
fceaf24a HJ |
960 | return ret; |
961 | } | |
962 | ||
9c26aa0d | 963 | static int rndis_filter_close_device(struct rndis_device *dev) |
fceaf24a HJ |
964 | { |
965 | int ret; | |
966 | ||
c2a4efdd | 967 | if (dev->state != RNDIS_DEV_DATAINITIALIZED) |
fceaf24a HJ |
968 | return 0; |
969 | ||
9c26aa0d | 970 | ret = rndis_filter_set_packet_filter(dev, 0); |
c3582a2c HZ |
971 | if (ret == -ENODEV) |
972 | ret = 0; | |
973 | ||
fceaf24a | 974 | if (ret == 0) |
c2a4efdd | 975 | dev->state = RNDIS_DEV_INITIALIZED; |
fceaf24a | 976 | |
fceaf24a HJ |
977 | return ret; |
978 | } | |
979 | ||
5b54dac8 HZ |
980 | static void netvsc_sc_open(struct vmbus_channel *new_sc) |
981 | { | |
982 | struct netvsc_device *nvscdev; | |
983 | u16 chn_index = new_sc->offermsg.offer.sub_channel_index; | |
984 | int ret; | |
985 | ||
986 | nvscdev = hv_get_drvdata(new_sc->primary_channel->device_obj); | |
987 | ||
988 | if (chn_index >= nvscdev->num_chn) | |
989 | return; | |
990 | ||
991 | set_per_channel_state(new_sc, nvscdev->sub_cb_buf + (chn_index - 1) * | |
992 | NETVSC_PACKET_SIZE); | |
993 | ||
994 | ret = vmbus_open(new_sc, nvscdev->ring_size * PAGE_SIZE, | |
995 | nvscdev->ring_size * PAGE_SIZE, NULL, 0, | |
996 | netvsc_channel_cb, new_sc); | |
997 | ||
998 | if (ret == 0) | |
999 | nvscdev->chn_table[chn_index] = new_sc; | |
1000 | } | |
1001 | ||
bdbad576 | 1002 | int rndis_filter_device_add(struct hv_device *dev, |
c2a4efdd | 1003 | void *additional_info) |
fceaf24a HJ |
1004 | { |
1005 | int ret; | |
86c921af | 1006 | struct netvsc_device *net_device; |
b13cc345 | 1007 | struct rndis_device *rndis_device; |
3c4debad | 1008 | struct netvsc_device_info *device_info = additional_info; |
4a0e70ae | 1009 | struct ndis_offload_params offloads; |
5b54dac8 | 1010 | struct nvsp_message *init_packet; |
999028cc | 1011 | unsigned long t; |
5b54dac8 HZ |
1012 | struct ndis_recv_scale_cap rsscap; |
1013 | u32 rsscap_size = sizeof(struct ndis_recv_scale_cap); | |
4d3c9d37 | 1014 | u32 mtu, size; |
fceaf24a | 1015 | |
b13cc345 S |
1016 | rndis_device = get_rndis_device(); |
1017 | if (!rndis_device) | |
327efbae | 1018 | return -ENODEV; |
fceaf24a | 1019 | |
0120ee0d GKH |
1020 | /* |
1021 | * Let the inner driver handle this first to create the netvsc channel | |
1022 | * NOTE! Once the channel is created, we may get a receive callback | |
1023 | * (RndisFilterOnReceive()) before this call is completed | |
1024 | */ | |
ce5bf661 | 1025 | ret = netvsc_device_add(dev, additional_info); |
0120ee0d | 1026 | if (ret != 0) { |
b13cc345 | 1027 | kfree(rndis_device); |
fceaf24a HJ |
1028 | return ret; |
1029 | } | |
1030 | ||
454f18a9 BP |
1031 | |
1032 | /* Initialize the rndis device */ | |
86c921af | 1033 | net_device = hv_get_drvdata(dev); |
59995370 | 1034 | net_device->max_chn = 1; |
5b54dac8 | 1035 | net_device->num_chn = 1; |
fceaf24a | 1036 | |
b13cc345 S |
1037 | net_device->extension = rndis_device; |
1038 | rndis_device->net_dev = net_device; | |
fceaf24a | 1039 | |
454f18a9 | 1040 | /* Send the rndis initialization message */ |
b13cc345 | 1041 | ret = rndis_filter_init_device(rndis_device); |
0120ee0d | 1042 | if (ret != 0) { |
5243e7bd HZ |
1043 | rndis_filter_device_remove(dev); |
1044 | return ret; | |
fceaf24a HJ |
1045 | } |
1046 | ||
4d3c9d37 HZ |
1047 | /* Get the MTU from the host */ |
1048 | size = sizeof(u32); | |
1049 | ret = rndis_filter_query_device(rndis_device, | |
1050 | RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE, | |
1051 | &mtu, &size); | |
1052 | if (ret == 0 && size == sizeof(u32)) | |
1053 | net_device->ndev->mtu = mtu; | |
1054 | ||
454f18a9 | 1055 | /* Get the mac address */ |
b13cc345 | 1056 | ret = rndis_filter_query_device_mac(rndis_device); |
0120ee0d | 1057 | if (ret != 0) { |
5243e7bd HZ |
1058 | rndis_filter_device_remove(dev); |
1059 | return ret; | |
fceaf24a HJ |
1060 | } |
1061 | ||
3c4debad | 1062 | memcpy(device_info->mac_adr, rndis_device->hw_mac_adr, ETH_ALEN); |
fceaf24a | 1063 | |
4a0e70ae KS |
1064 | /* Turn on the offloads; the host supports all of the relevant |
1065 | * offloads. | |
1066 | */ | |
1067 | memset(&offloads, 0, sizeof(struct ndis_offload_params)); | |
1068 | /* A value of zero means "no change"; now turn on what we | |
1069 | * want. | |
1070 | */ | |
1071 | offloads.ip_v4_csum = NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED; | |
1072 | offloads.tcp_ip_v4_csum = NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED; | |
1073 | offloads.udp_ip_v4_csum = NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED; | |
1074 | offloads.tcp_ip_v6_csum = NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED; | |
1075 | offloads.udp_ip_v6_csum = NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED; | |
1076 | offloads.lso_v2_ipv4 = NDIS_OFFLOAD_PARAMETERS_LSOV2_ENABLED; | |
1077 | ||
1078 | ||
1079 | ret = rndis_filter_set_offload_params(dev, &offloads); | |
1080 | if (ret) | |
1081 | goto err_dev_remv; | |
1082 | ||
b13cc345 | 1083 | rndis_filter_query_device_link_status(rndis_device); |
fceaf24a | 1084 | |
6f27457b | 1085 | device_info->link_state = rndis_device->link_state; |
eb335bc4 | 1086 | |
6f27457b | 1087 | dev_info(&dev->device, "Device MAC %pM link state %s\n", |
b13cc345 | 1088 | rndis_device->hw_mac_adr, |
6f27457b | 1089 | device_info->link_state ? "down" : "up"); |
fceaf24a | 1090 | |
5b54dac8 HZ |
1091 | if (net_device->nvsp_version < NVSP_PROTOCOL_VERSION_5) |
1092 | return 0; | |
1093 | ||
1094 | /* vRSS setup */ | |
1095 | memset(&rsscap, 0, rsscap_size); | |
1096 | ret = rndis_filter_query_device(rndis_device, | |
1097 | OID_GEN_RECEIVE_SCALE_CAPABILITIES, | |
1098 | &rsscap, &rsscap_size); | |
1099 | if (ret || rsscap.num_recv_que < 2) | |
1100 | goto out; | |
1101 | ||
59995370 | 1102 | net_device->max_chn = rsscap.num_recv_que; |
5b54dac8 HZ |
1103 | net_device->num_chn = (num_online_cpus() < rsscap.num_recv_que) ? |
1104 | num_online_cpus() : rsscap.num_recv_que; | |
1105 | if (net_device->num_chn == 1) | |
1106 | goto out; | |
1107 | ||
1108 | net_device->sub_cb_buf = vzalloc((net_device->num_chn - 1) * | |
1109 | NETVSC_PACKET_SIZE); | |
1110 | if (!net_device->sub_cb_buf) { | |
1111 | net_device->num_chn = 1; | |
1112 | dev_info(&dev->device, "No memory for subchannels.\n"); | |
1113 | goto out; | |
1114 | } | |
1115 | ||
1116 | vmbus_set_sc_create_callback(dev->channel, netvsc_sc_open); | |
1117 | ||
1118 | init_packet = &net_device->channel_init_pkt; | |
1119 | memset(init_packet, 0, sizeof(struct nvsp_message)); | |
1120 | init_packet->hdr.msg_type = NVSP_MSG5_TYPE_SUBCHANNEL; | |
1121 | init_packet->msg.v5_msg.subchn_req.op = NVSP_SUBCHANNEL_ALLOCATE; | |
1122 | init_packet->msg.v5_msg.subchn_req.num_subchannels = | |
1123 | net_device->num_chn - 1; | |
1124 | ret = vmbus_sendpacket(dev->channel, init_packet, | |
1125 | sizeof(struct nvsp_message), | |
1126 | (unsigned long)init_packet, | |
1127 | VM_PKT_DATA_INBAND, | |
1128 | VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED); | |
1129 | if (ret) | |
1130 | goto out; | |
1131 | t = wait_for_completion_timeout(&net_device->channel_init_wait, 5*HZ); | |
1132 | if (t == 0) { | |
1133 | ret = -ETIMEDOUT; | |
1134 | goto out; | |
1135 | } | |
1136 | if (init_packet->msg.v5_msg.subchn_comp.status != | |
1137 | NVSP_STAT_SUCCESS) { | |
1138 | ret = -ENODEV; | |
1139 | goto out; | |
1140 | } | |
1141 | net_device->num_chn = 1 + | |
1142 | init_packet->msg.v5_msg.subchn_comp.num_subchannels; | |
1143 | ||
5b54dac8 HZ |
1144 | ret = rndis_filter_set_rss_param(rndis_device, net_device->num_chn); |
1145 | ||
1146 | out: | |
59995370 AS |
1147 | if (ret) { |
1148 | net_device->max_chn = 1; | |
5b54dac8 | 1149 | net_device->num_chn = 1; |
59995370 | 1150 | } |
5b54dac8 | 1151 | return 0; /* return 0 because primary channel can be used alone */ |
4a0e70ae KS |
1152 | |
1153 | err_dev_remv: | |
1154 | rndis_filter_device_remove(dev); | |
1155 | return ret; | |
fceaf24a HJ |
1156 | } |
1157 | ||
df06bcff | 1158 | void rndis_filter_device_remove(struct hv_device *dev) |
fceaf24a | 1159 | { |
2ddd5e5f | 1160 | struct netvsc_device *net_dev = hv_get_drvdata(dev); |
53d21fdb | 1161 | struct rndis_device *rndis_dev = net_dev->extension; |
fceaf24a | 1162 | |
454f18a9 | 1163 | /* Halt and release the rndis device */ |
9c26aa0d | 1164 | rndis_filter_halt_device(rndis_dev); |
fceaf24a | 1165 | |
c2a4efdd | 1166 | kfree(rndis_dev); |
53d21fdb | 1167 | net_dev->extension = NULL; |
fceaf24a | 1168 | |
3fae5c8f | 1169 | netvsc_device_remove(dev); |
fceaf24a HJ |
1170 | } |
1171 | ||
fceaf24a | 1172 | |
9c26aa0d | 1173 | int rndis_filter_open(struct hv_device *dev) |
fceaf24a | 1174 | { |
86c921af | 1175 | struct netvsc_device *net_device = hv_get_drvdata(dev); |
fceaf24a | 1176 | |
86c921af | 1177 | if (!net_device) |
8a62d716 BP |
1178 | return -EINVAL; |
1179 | ||
86c921af | 1180 | return rndis_filter_open_device(net_device->extension); |
fceaf24a HJ |
1181 | } |
1182 | ||
9c26aa0d | 1183 | int rndis_filter_close(struct hv_device *dev) |
fceaf24a | 1184 | { |
5fccab3b | 1185 | struct netvsc_device *nvdev = hv_get_drvdata(dev); |
fceaf24a | 1186 | |
5fccab3b | 1187 | if (!nvdev) |
8a62d716 BP |
1188 | return -EINVAL; |
1189 | ||
5fccab3b | 1190 | return rndis_filter_close_device(nvdev->extension); |
fceaf24a | 1191 | } |