Commit | Line | Data |
---|---|---|
fceaf24a | 1 | /* |
fceaf24a HJ |
2 | * Copyright (c) 2009, Microsoft Corporation. |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms and conditions of the GNU General Public License, | |
6 | * version 2, as published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope it will be useful, but WITHOUT | |
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
11 | * more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License along with | |
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> |
d6472302 | 30 | #include <linux/vmalloc.h> |
3f335ea2 | 31 | |
5ca7252a | 32 | #include "hyperv_net.h" |
fceaf24a | 33 | |
fceaf24a | 34 | |
5b54dac8 | 35 | #define RNDIS_EXT_LEN PAGE_SIZE |
e681b954 | 36 | struct rndis_request { |
c2a4efdd | 37 | struct list_head list_ent; |
98d79690 | 38 | struct completion wait_event; |
fceaf24a | 39 | |
a3a6cab5 | 40 | struct rndis_message response_msg; |
0120ee0d | 41 | /* |
a3a6cab5 HZ |
42 | * The buffer for extended info after the RNDIS response message. It's |
43 | * referenced based on the data offset in the RNDIS message. Its size | |
44 | * is enough for current needs, and should be sufficient for the near | |
45 | * future. | |
0120ee0d | 46 | */ |
a3a6cab5 | 47 | u8 response_ext[RNDIS_EXT_LEN]; |
fceaf24a | 48 | |
454f18a9 | 49 | /* Simplify allocation by having a netvsc packet inline */ |
c2a4efdd | 50 | struct hv_netvsc_packet pkt; |
0f48917b | 51 | |
c2a4efdd | 52 | struct rndis_message request_msg; |
0f48917b | 53 | /* |
a3a6cab5 HZ |
54 | * The buffer for the extended info after the RNDIS request message. |
55 | * It is referenced and sized in a similar way as response_ext. | |
0f48917b | 56 | */ |
a3a6cab5 | 57 | u8 request_ext[RNDIS_EXT_LEN]; |
e681b954 | 58 | }; |
fceaf24a | 59 | |
9c26aa0d | 60 | static struct rndis_device *get_rndis_device(void) |
fceaf24a | 61 | { |
e681b954 | 62 | struct rndis_device *device; |
fceaf24a | 63 | |
e681b954 | 64 | device = kzalloc(sizeof(struct rndis_device), GFP_KERNEL); |
fceaf24a | 65 | if (!device) |
fceaf24a | 66 | return NULL; |
fceaf24a | 67 | |
880fb89c | 68 | spin_lock_init(&device->request_lock); |
fceaf24a | 69 | |
c2a4efdd | 70 | INIT_LIST_HEAD(&device->req_list); |
fceaf24a | 71 | |
c2a4efdd | 72 | device->state = RNDIS_DEV_UNINITIALIZED; |
fceaf24a HJ |
73 | |
74 | return device; | |
75 | } | |
76 | ||
9c26aa0d | 77 | static struct rndis_request *get_rndis_request(struct rndis_device *dev, |
c2a4efdd HZ |
78 | u32 msg_type, |
79 | u32 msg_len) | |
fceaf24a | 80 | { |
e681b954 | 81 | struct rndis_request *request; |
c2a4efdd | 82 | struct rndis_message *rndis_msg; |
9f33d054 | 83 | struct rndis_set_request *set; |
880fb89c | 84 | unsigned long flags; |
fceaf24a | 85 | |
e681b954 | 86 | request = kzalloc(sizeof(struct rndis_request), GFP_KERNEL); |
fceaf24a | 87 | if (!request) |
fceaf24a | 88 | return NULL; |
fceaf24a | 89 | |
98d79690 | 90 | init_completion(&request->wait_event); |
fceaf24a | 91 | |
c2a4efdd | 92 | rndis_msg = &request->request_msg; |
a388eb17 HZ |
93 | rndis_msg->ndis_msg_type = msg_type; |
94 | rndis_msg->msg_len = msg_len; | |
fceaf24a | 95 | |
5b54dac8 HZ |
96 | request->pkt.q_idx = 0; |
97 | ||
0120ee0d GKH |
98 | /* |
99 | * Set the request id. This field is always after the rndis header for | |
100 | * request/response packet types so we just used the SetRequest as a | |
101 | * template | |
102 | */ | |
a388eb17 HZ |
103 | set = &rndis_msg->msg.set_req; |
104 | set->req_id = atomic_inc_return(&dev->new_req_id); | |
fceaf24a | 105 | |
454f18a9 | 106 | /* Add to the request list */ |
c2a4efdd HZ |
107 | spin_lock_irqsave(&dev->request_lock, flags); |
108 | list_add_tail(&request->list_ent, &dev->req_list); | |
109 | spin_unlock_irqrestore(&dev->request_lock, flags); | |
fceaf24a HJ |
110 | |
111 | return request; | |
112 | } | |
113 | ||
9c26aa0d | 114 | static void put_rndis_request(struct rndis_device *dev, |
c2a4efdd | 115 | struct rndis_request *req) |
fceaf24a | 116 | { |
880fb89c GKH |
117 | unsigned long flags; |
118 | ||
c2a4efdd HZ |
119 | spin_lock_irqsave(&dev->request_lock, flags); |
120 | list_del(&req->list_ent); | |
121 | spin_unlock_irqrestore(&dev->request_lock, flags); | |
fceaf24a | 122 | |
c2a4efdd | 123 | kfree(req); |
fceaf24a HJ |
124 | } |
125 | ||
729a2849 HZ |
126 | static void dump_rndis_message(struct hv_device *hv_dev, |
127 | struct rndis_message *rndis_msg) | |
fceaf24a | 128 | { |
3d541ac5 | 129 | struct net_device *netdev = hv_get_drvdata(hv_dev); |
729a2849 | 130 | |
a388eb17 | 131 | switch (rndis_msg->ndis_msg_type) { |
51491167 LW |
132 | case RNDIS_MSG_PACKET: |
133 | netdev_dbg(netdev, "RNDIS_MSG_PACKET (len %u, " | |
0120ee0d GKH |
134 | "data offset %u data len %u, # oob %u, " |
135 | "oob offset %u, oob len %u, pkt offset %u, " | |
729a2849 | 136 | "pkt len %u\n", |
a388eb17 HZ |
137 | rndis_msg->msg_len, |
138 | rndis_msg->msg.pkt.data_offset, | |
139 | rndis_msg->msg.pkt.data_len, | |
140 | rndis_msg->msg.pkt.num_oob_data_elements, | |
141 | rndis_msg->msg.pkt.oob_data_offset, | |
142 | rndis_msg->msg.pkt.oob_data_len, | |
143 | rndis_msg->msg.pkt.per_pkt_info_offset, | |
144 | rndis_msg->msg.pkt.per_pkt_info_len); | |
fceaf24a HJ |
145 | break; |
146 | ||
51491167 LW |
147 | case RNDIS_MSG_INIT_C: |
148 | netdev_dbg(netdev, "RNDIS_MSG_INIT_C " | |
0120ee0d GKH |
149 | "(len %u, id 0x%x, status 0x%x, major %d, minor %d, " |
150 | "device flags %d, max xfer size 0x%x, max pkts %u, " | |
729a2849 | 151 | "pkt aligned %u)\n", |
a388eb17 HZ |
152 | rndis_msg->msg_len, |
153 | rndis_msg->msg.init_complete.req_id, | |
154 | rndis_msg->msg.init_complete.status, | |
155 | rndis_msg->msg.init_complete.major_ver, | |
156 | rndis_msg->msg.init_complete.minor_ver, | |
157 | rndis_msg->msg.init_complete.dev_flags, | |
158 | rndis_msg->msg.init_complete.max_xfer_size, | |
159 | rndis_msg->msg.init_complete. | |
160 | max_pkt_per_msg, | |
161 | rndis_msg->msg.init_complete. | |
162 | pkt_alignment_factor); | |
fceaf24a HJ |
163 | break; |
164 | ||
51491167 LW |
165 | case RNDIS_MSG_QUERY_C: |
166 | netdev_dbg(netdev, "RNDIS_MSG_QUERY_C " | |
0120ee0d | 167 | "(len %u, id 0x%x, status 0x%x, buf len %u, " |
729a2849 | 168 | "buf offset %u)\n", |
a388eb17 HZ |
169 | rndis_msg->msg_len, |
170 | rndis_msg->msg.query_complete.req_id, | |
171 | rndis_msg->msg.query_complete.status, | |
172 | rndis_msg->msg.query_complete. | |
173 | info_buflen, | |
174 | rndis_msg->msg.query_complete. | |
175 | info_buf_offset); | |
fceaf24a HJ |
176 | break; |
177 | ||
51491167 | 178 | case RNDIS_MSG_SET_C: |
729a2849 | 179 | netdev_dbg(netdev, |
51491167 | 180 | "RNDIS_MSG_SET_C (len %u, id 0x%x, status 0x%x)\n", |
a388eb17 HZ |
181 | rndis_msg->msg_len, |
182 | rndis_msg->msg.set_complete.req_id, | |
183 | rndis_msg->msg.set_complete.status); | |
fceaf24a HJ |
184 | break; |
185 | ||
51491167 LW |
186 | case RNDIS_MSG_INDICATE: |
187 | netdev_dbg(netdev, "RNDIS_MSG_INDICATE " | |
729a2849 | 188 | "(len %u, status 0x%x, buf len %u, buf offset %u)\n", |
a388eb17 HZ |
189 | rndis_msg->msg_len, |
190 | rndis_msg->msg.indicate_status.status, | |
191 | rndis_msg->msg.indicate_status.status_buflen, | |
192 | rndis_msg->msg.indicate_status.status_buf_offset); | |
fceaf24a HJ |
193 | break; |
194 | ||
195 | default: | |
729a2849 | 196 | netdev_dbg(netdev, "0x%x (len %u)\n", |
a388eb17 HZ |
197 | rndis_msg->ndis_msg_type, |
198 | rndis_msg->msg_len); | |
fceaf24a HJ |
199 | break; |
200 | } | |
201 | } | |
202 | ||
9c26aa0d | 203 | static int rndis_filter_send_request(struct rndis_device *dev, |
c2a4efdd | 204 | struct rndis_request *req) |
fceaf24a | 205 | { |
0120ee0d | 206 | int ret; |
4193d4f4 | 207 | struct hv_netvsc_packet *packet; |
b08cc791 | 208 | struct hv_page_buffer page_buf[2]; |
a9f2e2d6 | 209 | struct hv_page_buffer *pb = page_buf; |
3d541ac5 | 210 | struct net_device_context *net_device_ctx = netdev_priv(dev->ndev); |
fceaf24a | 211 | |
454f18a9 | 212 | /* Setup the packet to send it */ |
c2a4efdd | 213 | packet = &req->pkt; |
fceaf24a | 214 | |
a388eb17 | 215 | packet->total_data_buflen = req->request_msg.msg_len; |
72a2f5bd | 216 | packet->page_buf_cnt = 1; |
fceaf24a | 217 | |
a9f2e2d6 | 218 | pb[0].pfn = virt_to_phys(&req->request_msg) >> |
0120ee0d | 219 | PAGE_SHIFT; |
a9f2e2d6 KS |
220 | pb[0].len = req->request_msg.msg_len; |
221 | pb[0].offset = | |
c2a4efdd | 222 | (unsigned long)&req->request_msg & (PAGE_SIZE - 1); |
fceaf24a | 223 | |
99e3fcfa | 224 | /* Add one page_buf when request_msg crossing page boundary */ |
a9f2e2d6 | 225 | if (pb[0].offset + pb[0].len > PAGE_SIZE) { |
99e3fcfa | 226 | packet->page_buf_cnt++; |
a9f2e2d6 KS |
227 | pb[0].len = PAGE_SIZE - |
228 | pb[0].offset; | |
229 | pb[1].pfn = virt_to_phys((void *)&req->request_msg | |
230 | + pb[0].len) >> PAGE_SHIFT; | |
231 | pb[1].offset = 0; | |
232 | pb[1].len = req->request_msg.msg_len - | |
233 | pb[0].len; | |
99e3fcfa HZ |
234 | } |
235 | ||
3d541ac5 | 236 | ret = netvsc_send(net_device_ctx->device_ctx, packet, NULL, &pb, NULL); |
fceaf24a HJ |
237 | return ret; |
238 | } | |
239 | ||
1b07da51 HZ |
240 | static void rndis_set_link_state(struct rndis_device *rdev, |
241 | struct rndis_request *request) | |
242 | { | |
243 | u32 link_status; | |
244 | struct rndis_query_complete *query_complete; | |
245 | ||
246 | query_complete = &request->response_msg.msg.query_complete; | |
247 | ||
248 | if (query_complete->status == RNDIS_STATUS_SUCCESS && | |
249 | query_complete->info_buflen == sizeof(u32)) { | |
250 | memcpy(&link_status, (void *)((unsigned long)query_complete + | |
251 | query_complete->info_buf_offset), sizeof(u32)); | |
252 | rdev->link_state = link_status != 0; | |
253 | } | |
254 | } | |
255 | ||
9c26aa0d | 256 | static void rndis_filter_receive_response(struct rndis_device *dev, |
c2a4efdd | 257 | struct rndis_message *resp) |
fceaf24a | 258 | { |
e681b954 | 259 | struct rndis_request *request = NULL; |
0e727613 | 260 | bool found = false; |
880fb89c | 261 | unsigned long flags; |
3d541ac5 | 262 | struct net_device *ndev = dev->ndev; |
fceaf24a | 263 | |
c2a4efdd HZ |
264 | spin_lock_irqsave(&dev->request_lock, flags); |
265 | list_for_each_entry(request, &dev->req_list, list_ent) { | |
0120ee0d GKH |
266 | /* |
267 | * All request/response message contains RequestId as the 1st | |
268 | * field | |
269 | */ | |
a388eb17 HZ |
270 | if (request->request_msg.msg.init_req.req_id |
271 | == resp->msg.init_complete.req_id) { | |
0e727613 | 272 | found = true; |
fceaf24a HJ |
273 | break; |
274 | } | |
275 | } | |
c2a4efdd | 276 | spin_unlock_irqrestore(&dev->request_lock, flags); |
fceaf24a | 277 | |
0120ee0d | 278 | if (found) { |
a3a6cab5 HZ |
279 | if (resp->msg_len <= |
280 | sizeof(struct rndis_message) + RNDIS_EXT_LEN) { | |
c2a4efdd | 281 | memcpy(&request->response_msg, resp, |
a388eb17 | 282 | resp->msg_len); |
1b07da51 HZ |
283 | if (request->request_msg.ndis_msg_type == |
284 | RNDIS_MSG_QUERY && request->request_msg.msg. | |
285 | query_req.oid == RNDIS_OID_GEN_MEDIA_CONNECT_STATUS) | |
286 | rndis_set_link_state(dev, request); | |
0120ee0d | 287 | } else { |
d9871158 | 288 | netdev_err(ndev, |
eb335bc4 HJ |
289 | "rndis response buffer overflow " |
290 | "detected (size %u max %zu)\n", | |
291 | resp->msg_len, | |
86eedacc | 292 | sizeof(struct rndis_message)); |
0120ee0d | 293 | |
a388eb17 | 294 | if (resp->ndis_msg_type == |
51491167 | 295 | RNDIS_MSG_RESET_C) { |
0120ee0d | 296 | /* does not have a request id field */ |
a388eb17 | 297 | request->response_msg.msg.reset_complete. |
007e5c8e | 298 | status = RNDIS_STATUS_BUFFER_OVERFLOW; |
0120ee0d | 299 | } else { |
a388eb17 HZ |
300 | request->response_msg.msg. |
301 | init_complete.status = | |
007e5c8e | 302 | RNDIS_STATUS_BUFFER_OVERFLOW; |
fceaf24a HJ |
303 | } |
304 | } | |
305 | ||
98d79690 | 306 | complete(&request->wait_event); |
0120ee0d | 307 | } else { |
d9871158 | 308 | netdev_err(ndev, |
eb335bc4 HJ |
309 | "no rndis request found for this response " |
310 | "(id 0x%x res type 0x%x)\n", | |
311 | resp->msg.init_complete.req_id, | |
312 | resp->ndis_msg_type); | |
fceaf24a | 313 | } |
fceaf24a HJ |
314 | } |
315 | ||
1f5f3a75 HZ |
316 | /* |
317 | * Get the Per-Packet-Info with the specified type | |
318 | * return NULL if not found. | |
319 | */ | |
320 | static inline void *rndis_get_ppi(struct rndis_packet *rpkt, u32 type) | |
321 | { | |
322 | struct rndis_per_packet_info *ppi; | |
323 | int len; | |
324 | ||
325 | if (rpkt->per_pkt_info_offset == 0) | |
326 | return NULL; | |
327 | ||
328 | ppi = (struct rndis_per_packet_info *)((ulong)rpkt + | |
329 | rpkt->per_pkt_info_offset); | |
330 | len = rpkt->per_pkt_info_len; | |
331 | ||
332 | while (len > 0) { | |
333 | if (ppi->type == type) | |
334 | return (void *)((ulong)ppi + ppi->ppi_offset); | |
335 | len -= ppi->size; | |
336 | ppi = (struct rndis_per_packet_info *)((ulong)ppi + ppi->size); | |
337 | } | |
338 | ||
339 | return NULL; | |
340 | } | |
341 | ||
10082f98 | 342 | static int rndis_filter_receive_data(struct rndis_device *dev, |
c2a4efdd | 343 | struct rndis_message *msg, |
25b85ee8 | 344 | struct hv_netvsc_packet *pkt, |
c4b20c63 | 345 | void **data, |
25b85ee8 | 346 | struct vmbus_channel *channel) |
fceaf24a | 347 | { |
c2a4efdd HZ |
348 | struct rndis_packet *rndis_pkt; |
349 | u32 data_offset; | |
1f5f3a75 | 350 | struct ndis_pkt_8021q_info *vlan; |
e3d605ed | 351 | struct ndis_tcp_ip_checksum_info *csum_info; |
760d1e36 | 352 | u16 vlan_tci = 0; |
3d541ac5 | 353 | struct net_device_context *net_device_ctx = netdev_priv(dev->ndev); |
fceaf24a | 354 | |
a388eb17 | 355 | rndis_pkt = &msg->msg.pkt; |
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; |
4b8a8bc9 WY |
361 | |
362 | /* | |
363 | * Make sure we got a valid RNDIS message, now total_data_buflen | |
364 | * should be the data packet size plus the trailer padding size | |
365 | */ | |
366 | if (pkt->total_data_buflen < rndis_pkt->data_len) { | |
3d541ac5 | 367 | netdev_err(dev->ndev, "rndis message buffer " |
4b8a8bc9 WY |
368 | "overflow detected (got %u, min %u)" |
369 | "...dropping this message!\n", | |
370 | pkt->total_data_buflen, rndis_pkt->data_len); | |
10082f98 | 371 | return NVSP_STAT_FAIL; |
4b8a8bc9 WY |
372 | } |
373 | ||
374 | /* | |
375 | * Remove the rndis trailer padding from rndis packet message | |
376 | * rndis_pkt->data_len tell us the real data length, we only copy | |
377 | * the data packet to the stack, without the rndis trailer padding | |
378 | */ | |
379 | pkt->total_data_buflen = rndis_pkt->data_len; | |
c4b20c63 | 380 | *data = (void *)((unsigned long)(*data) + data_offset); |
669c1fc6 | 381 | |
1f5f3a75 HZ |
382 | vlan = rndis_get_ppi(rndis_pkt, IEEE_8021Q_INFO); |
383 | if (vlan) { | |
760d1e36 | 384 | vlan_tci = VLAN_TAG_PRESENT | vlan->vlanid | |
1f5f3a75 | 385 | (vlan->pri << VLAN_PRIO_SHIFT); |
1f5f3a75 HZ |
386 | } |
387 | ||
e3d605ed | 388 | csum_info = rndis_get_ppi(rndis_pkt, TCPIP_CHKSUM_PKTINFO); |
3d541ac5 | 389 | return netvsc_recv_callback(net_device_ctx->device_ctx, pkt, data, |
760d1e36 | 390 | csum_info, channel, vlan_tci); |
fceaf24a HJ |
391 | } |
392 | ||
5fcc4115 | 393 | int rndis_filter_receive(struct hv_device *dev, |
25b85ee8 | 394 | struct hv_netvsc_packet *pkt, |
c4b20c63 | 395 | void **data, |
25b85ee8 | 396 | struct vmbus_channel *channel) |
fceaf24a | 397 | { |
3d541ac5 VK |
398 | struct net_device *ndev = hv_get_drvdata(dev); |
399 | struct net_device_context *net_device_ctx = netdev_priv(ndev); | |
400 | struct netvsc_device *net_dev = net_device_ctx->nvdev; | |
c2a4efdd | 401 | struct rndis_device *rndis_dev; |
ef31bef6 | 402 | struct rndis_message *rndis_msg; |
63f6921d | 403 | int ret = 0; |
2ddd5e5f | 404 | |
63f6921d | 405 | if (!net_dev) { |
10082f98 | 406 | ret = NVSP_STAT_FAIL; |
63f6921d HZ |
407 | goto exit; |
408 | } | |
8a62d716 | 409 | |
454f18a9 | 410 | /* Make sure the rndis device state is initialized */ |
53d21fdb | 411 | if (!net_dev->extension) { |
d9871158 | 412 | netdev_err(ndev, "got rndis message but no rndis device - " |
eb335bc4 | 413 | "dropping this message!\n"); |
10082f98 | 414 | ret = NVSP_STAT_FAIL; |
63f6921d | 415 | goto exit; |
fceaf24a HJ |
416 | } |
417 | ||
53d21fdb | 418 | rndis_dev = (struct rndis_device *)net_dev->extension; |
c2a4efdd | 419 | if (rndis_dev->state == RNDIS_DEV_UNINITIALIZED) { |
d9871158 | 420 | netdev_err(ndev, "got rndis message but rndis device " |
eb335bc4 | 421 | "uninitialized...dropping this message!\n"); |
10082f98 | 422 | ret = NVSP_STAT_FAIL; |
63f6921d | 423 | goto exit; |
fceaf24a HJ |
424 | } |
425 | ||
c4b20c63 | 426 | rndis_msg = *data; |
fceaf24a | 427 | |
3d541ac5 | 428 | if (netif_msg_rx_err(net_device_ctx)) |
3f300ff4 | 429 | dump_rndis_message(dev, rndis_msg); |
fceaf24a | 430 | |
ef31bef6 | 431 | switch (rndis_msg->ndis_msg_type) { |
51491167 | 432 | case RNDIS_MSG_PACKET: |
0120ee0d | 433 | /* data msg */ |
10082f98 KS |
434 | ret = rndis_filter_receive_data(rndis_dev, rndis_msg, pkt, |
435 | data, channel); | |
fceaf24a HJ |
436 | break; |
437 | ||
51491167 LW |
438 | case RNDIS_MSG_INIT_C: |
439 | case RNDIS_MSG_QUERY_C: | |
440 | case RNDIS_MSG_SET_C: | |
0120ee0d | 441 | /* completion msgs */ |
ef31bef6 | 442 | rndis_filter_receive_response(rndis_dev, rndis_msg); |
fceaf24a HJ |
443 | break; |
444 | ||
51491167 | 445 | case RNDIS_MSG_INDICATE: |
0120ee0d | 446 | /* notification msgs */ |
3a494e71 | 447 | netvsc_linkstatus_callback(dev, rndis_msg); |
fceaf24a HJ |
448 | break; |
449 | default: | |
d9871158 | 450 | netdev_err(ndev, |
eb335bc4 | 451 | "unhandled rndis message (type %u len %u)\n", |
ef31bef6 HZ |
452 | rndis_msg->ndis_msg_type, |
453 | rndis_msg->msg_len); | |
fceaf24a HJ |
454 | break; |
455 | } | |
456 | ||
63f6921d | 457 | exit: |
63f6921d | 458 | return ret; |
fceaf24a HJ |
459 | } |
460 | ||
9c26aa0d | 461 | static int rndis_filter_query_device(struct rndis_device *dev, u32 oid, |
c2a4efdd | 462 | void *result, u32 *result_size) |
fceaf24a | 463 | { |
e681b954 | 464 | struct rndis_request *request; |
c2a4efdd | 465 | u32 inresult_size = *result_size; |
9f33d054 | 466 | struct rndis_query_request *query; |
c2a4efdd | 467 | struct rndis_query_complete *query_complete; |
0120ee0d | 468 | int ret = 0; |
fceaf24a | 469 | |
c2a4efdd | 470 | if (!result) |
8a62d716 | 471 | return -EINVAL; |
fceaf24a | 472 | |
c2a4efdd | 473 | *result_size = 0; |
51491167 | 474 | request = get_rndis_request(dev, RNDIS_MSG_QUERY, |
0120ee0d GKH |
475 | RNDIS_MESSAGE_SIZE(struct rndis_query_request)); |
476 | if (!request) { | |
de6e0580 | 477 | ret = -ENOMEM; |
1c627870 | 478 | goto cleanup; |
fceaf24a HJ |
479 | } |
480 | ||
454f18a9 | 481 | /* Setup the rndis query */ |
a388eb17 HZ |
482 | query = &request->request_msg.msg.query_req; |
483 | query->oid = oid; | |
484 | query->info_buf_offset = sizeof(struct rndis_query_request); | |
485 | query->info_buflen = 0; | |
486 | query->dev_vc_handle = 0; | |
fceaf24a | 487 | |
5b54dac8 HZ |
488 | if (oid == OID_GEN_RECEIVE_SCALE_CAPABILITIES) { |
489 | struct ndis_recv_scale_cap *cap; | |
490 | ||
491 | request->request_msg.msg_len += | |
492 | sizeof(struct ndis_recv_scale_cap); | |
493 | query->info_buflen = sizeof(struct ndis_recv_scale_cap); | |
494 | cap = (struct ndis_recv_scale_cap *)((unsigned long)query + | |
495 | query->info_buf_offset); | |
496 | cap->hdr.type = NDIS_OBJECT_TYPE_RSS_CAPABILITIES; | |
497 | cap->hdr.rev = NDIS_RECEIVE_SCALE_CAPABILITIES_REVISION_2; | |
498 | cap->hdr.size = sizeof(struct ndis_recv_scale_cap); | |
499 | } | |
500 | ||
9c26aa0d | 501 | ret = rndis_filter_send_request(dev, request); |
fceaf24a | 502 | if (ret != 0) |
1c627870 | 503 | goto cleanup; |
fceaf24a | 504 | |
5362855a | 505 | wait_for_completion(&request->wait_event); |
fceaf24a | 506 | |
454f18a9 | 507 | /* Copy the response back */ |
a388eb17 | 508 | query_complete = &request->response_msg.msg.query_complete; |
fceaf24a | 509 | |
a388eb17 | 510 | if (query_complete->info_buflen > inresult_size) { |
fceaf24a | 511 | ret = -1; |
1c627870 | 512 | goto cleanup; |
fceaf24a HJ |
513 | } |
514 | ||
c2a4efdd HZ |
515 | memcpy(result, |
516 | (void *)((unsigned long)query_complete + | |
a388eb17 HZ |
517 | query_complete->info_buf_offset), |
518 | query_complete->info_buflen); | |
fceaf24a | 519 | |
a388eb17 | 520 | *result_size = query_complete->info_buflen; |
fceaf24a | 521 | |
1c627870 | 522 | cleanup: |
fceaf24a | 523 | if (request) |
9c26aa0d | 524 | put_rndis_request(dev, request); |
fceaf24a HJ |
525 | |
526 | return ret; | |
527 | } | |
528 | ||
9c26aa0d | 529 | static int rndis_filter_query_device_mac(struct rndis_device *dev) |
fceaf24a | 530 | { |
9f8bd8ba | 531 | u32 size = ETH_ALEN; |
fceaf24a | 532 | |
9c26aa0d | 533 | return rndis_filter_query_device(dev, |
0120ee0d | 534 | RNDIS_OID_802_3_PERMANENT_ADDRESS, |
c2a4efdd | 535 | dev->hw_mac_adr, &size); |
fceaf24a HJ |
536 | } |
537 | ||
1ce09e89 HZ |
538 | #define NWADR_STR "NetworkAddress" |
539 | #define NWADR_STRLEN 14 | |
540 | ||
e834da9a | 541 | int rndis_filter_set_device_mac(struct net_device *ndev, char *mac) |
1ce09e89 | 542 | { |
2625466d | 543 | struct netvsc_device *nvdev = net_device_to_netvsc_device(ndev); |
1ce09e89 | 544 | struct rndis_device *rdev = nvdev->extension; |
1ce09e89 HZ |
545 | struct rndis_request *request; |
546 | struct rndis_set_request *set; | |
547 | struct rndis_config_parameter_info *cpi; | |
548 | wchar_t *cfg_nwadr, *cfg_mac; | |
549 | struct rndis_set_complete *set_complete; | |
550 | char macstr[2*ETH_ALEN+1]; | |
551 | u32 extlen = sizeof(struct rndis_config_parameter_info) + | |
552 | 2*NWADR_STRLEN + 4*ETH_ALEN; | |
999028cc | 553 | int ret; |
1ce09e89 HZ |
554 | |
555 | request = get_rndis_request(rdev, RNDIS_MSG_SET, | |
556 | RNDIS_MESSAGE_SIZE(struct rndis_set_request) + extlen); | |
557 | if (!request) | |
558 | return -ENOMEM; | |
559 | ||
560 | set = &request->request_msg.msg.set_req; | |
561 | set->oid = RNDIS_OID_GEN_RNDIS_CONFIG_PARAMETER; | |
562 | set->info_buflen = extlen; | |
563 | set->info_buf_offset = sizeof(struct rndis_set_request); | |
564 | set->dev_vc_handle = 0; | |
565 | ||
566 | cpi = (struct rndis_config_parameter_info *)((ulong)set + | |
567 | set->info_buf_offset); | |
568 | cpi->parameter_name_offset = | |
569 | sizeof(struct rndis_config_parameter_info); | |
570 | /* Multiply by 2 because host needs 2 bytes (utf16) for each char */ | |
571 | cpi->parameter_name_length = 2*NWADR_STRLEN; | |
572 | cpi->parameter_type = RNDIS_CONFIG_PARAM_TYPE_STRING; | |
573 | cpi->parameter_value_offset = | |
574 | cpi->parameter_name_offset + cpi->parameter_name_length; | |
575 | /* Multiply by 4 because each MAC byte displayed as 2 utf16 chars */ | |
576 | cpi->parameter_value_length = 4*ETH_ALEN; | |
577 | ||
578 | cfg_nwadr = (wchar_t *)((ulong)cpi + cpi->parameter_name_offset); | |
579 | cfg_mac = (wchar_t *)((ulong)cpi + cpi->parameter_value_offset); | |
580 | ret = utf8s_to_utf16s(NWADR_STR, NWADR_STRLEN, UTF16_HOST_ENDIAN, | |
581 | cfg_nwadr, NWADR_STRLEN); | |
582 | if (ret < 0) | |
583 | goto cleanup; | |
584 | snprintf(macstr, 2*ETH_ALEN+1, "%pm", mac); | |
585 | ret = utf8s_to_utf16s(macstr, 2*ETH_ALEN, UTF16_HOST_ENDIAN, | |
586 | cfg_mac, 2*ETH_ALEN); | |
587 | if (ret < 0) | |
588 | goto cleanup; | |
589 | ||
590 | ret = rndis_filter_send_request(rdev, request); | |
591 | if (ret != 0) | |
592 | goto cleanup; | |
593 | ||
5362855a VK |
594 | wait_for_completion(&request->wait_event); |
595 | ||
596 | set_complete = &request->response_msg.msg.set_complete; | |
597 | if (set_complete->status != RNDIS_STATUS_SUCCESS) { | |
598 | netdev_err(ndev, "Fail to set MAC on host side:0x%x\n", | |
599 | set_complete->status); | |
600 | ret = -EINVAL; | |
1ce09e89 HZ |
601 | } |
602 | ||
603 | cleanup: | |
604 | put_rndis_request(rdev, request); | |
605 | return ret; | |
606 | } | |
607 | ||
da19fcd0 | 608 | static int |
426d9541 | 609 | rndis_filter_set_offload_params(struct net_device *ndev, |
4a0e70ae KS |
610 | struct ndis_offload_params *req_offloads) |
611 | { | |
2625466d | 612 | struct netvsc_device *nvdev = net_device_to_netvsc_device(ndev); |
4a0e70ae | 613 | struct rndis_device *rdev = nvdev->extension; |
4a0e70ae KS |
614 | struct rndis_request *request; |
615 | struct rndis_set_request *set; | |
616 | struct ndis_offload_params *offload_params; | |
617 | struct rndis_set_complete *set_complete; | |
618 | u32 extlen = sizeof(struct ndis_offload_params); | |
999028cc | 619 | int ret; |
af9893a3 KS |
620 | u32 vsp_version = nvdev->nvsp_version; |
621 | ||
622 | if (vsp_version <= NVSP_PROTOCOL_VERSION_4) { | |
623 | extlen = VERSION_4_OFFLOAD_SIZE; | |
624 | /* On NVSP_PROTOCOL_VERSION_4 and below, we do not support | |
625 | * UDP checksum offload. | |
626 | */ | |
627 | req_offloads->udp_ip_v4_csum = 0; | |
628 | req_offloads->udp_ip_v6_csum = 0; | |
629 | } | |
4a0e70ae KS |
630 | |
631 | request = get_rndis_request(rdev, RNDIS_MSG_SET, | |
632 | RNDIS_MESSAGE_SIZE(struct rndis_set_request) + extlen); | |
633 | if (!request) | |
634 | return -ENOMEM; | |
635 | ||
636 | set = &request->request_msg.msg.set_req; | |
637 | set->oid = OID_TCP_OFFLOAD_PARAMETERS; | |
638 | set->info_buflen = extlen; | |
639 | set->info_buf_offset = sizeof(struct rndis_set_request); | |
640 | set->dev_vc_handle = 0; | |
641 | ||
642 | offload_params = (struct ndis_offload_params *)((ulong)set + | |
643 | set->info_buf_offset); | |
644 | *offload_params = *req_offloads; | |
645 | offload_params->header.type = NDIS_OBJECT_TYPE_DEFAULT; | |
646 | offload_params->header.revision = NDIS_OFFLOAD_PARAMETERS_REVISION_3; | |
647 | offload_params->header.size = extlen; | |
648 | ||
649 | ret = rndis_filter_send_request(rdev, request); | |
650 | if (ret != 0) | |
651 | goto cleanup; | |
652 | ||
5362855a VK |
653 | wait_for_completion(&request->wait_event); |
654 | set_complete = &request->response_msg.msg.set_complete; | |
655 | if (set_complete->status != RNDIS_STATUS_SUCCESS) { | |
656 | netdev_err(ndev, "Fail to set offload on host side:0x%x\n", | |
657 | set_complete->status); | |
658 | ret = -EINVAL; | |
4a0e70ae KS |
659 | } |
660 | ||
661 | cleanup: | |
662 | put_rndis_request(rdev, request); | |
663 | return ret; | |
664 | } | |
1ce09e89 | 665 | |
94773866 | 666 | static const u8 netvsc_hash_key[] = { |
5b54dac8 HZ |
667 | 0x6d, 0x5a, 0x56, 0xda, 0x25, 0x5b, 0x0e, 0xc2, |
668 | 0x41, 0x67, 0x25, 0x3d, 0x43, 0xa3, 0x8f, 0xb0, | |
669 | 0xd0, 0xca, 0x2b, 0xcb, 0xae, 0x7b, 0x30, 0xb4, | |
670 | 0x77, 0xcb, 0x2d, 0xa3, 0x80, 0x30, 0xf2, 0x0c, | |
671 | 0x6a, 0x42, 0xb7, 0x3b, 0xbe, 0xac, 0x01, 0xfa | |
672 | }; | |
94773866 | 673 | #define HASH_KEYLEN ARRAY_SIZE(netvsc_hash_key) |
5b54dac8 | 674 | |
da19fcd0 | 675 | static int rndis_filter_set_rss_param(struct rndis_device *rdev, int num_queue) |
5b54dac8 | 676 | { |
3d541ac5 | 677 | struct net_device *ndev = rdev->ndev; |
5b54dac8 HZ |
678 | struct rndis_request *request; |
679 | struct rndis_set_request *set; | |
680 | struct rndis_set_complete *set_complete; | |
681 | u32 extlen = sizeof(struct ndis_recv_scale_param) + | |
682 | 4*ITAB_NUM + HASH_KEYLEN; | |
683 | struct ndis_recv_scale_param *rssp; | |
684 | u32 *itab; | |
685 | u8 *keyp; | |
999028cc | 686 | int i, ret; |
5b54dac8 HZ |
687 | |
688 | request = get_rndis_request( | |
689 | rdev, RNDIS_MSG_SET, | |
690 | RNDIS_MESSAGE_SIZE(struct rndis_set_request) + extlen); | |
691 | if (!request) | |
692 | return -ENOMEM; | |
693 | ||
694 | set = &request->request_msg.msg.set_req; | |
695 | set->oid = OID_GEN_RECEIVE_SCALE_PARAMETERS; | |
696 | set->info_buflen = extlen; | |
697 | set->info_buf_offset = sizeof(struct rndis_set_request); | |
698 | set->dev_vc_handle = 0; | |
699 | ||
700 | rssp = (struct ndis_recv_scale_param *)(set + 1); | |
701 | rssp->hdr.type = NDIS_OBJECT_TYPE_RSS_PARAMETERS; | |
702 | rssp->hdr.rev = NDIS_RECEIVE_SCALE_PARAMETERS_REVISION_2; | |
703 | rssp->hdr.size = sizeof(struct ndis_recv_scale_param); | |
704 | rssp->flag = 0; | |
705 | rssp->hashinfo = NDIS_HASH_FUNC_TOEPLITZ | NDIS_HASH_IPV4 | | |
4c87454a HZ |
706 | NDIS_HASH_TCP_IPV4 | NDIS_HASH_IPV6 | |
707 | NDIS_HASH_TCP_IPV6; | |
5b54dac8 HZ |
708 | rssp->indirect_tabsize = 4*ITAB_NUM; |
709 | rssp->indirect_taboffset = sizeof(struct ndis_recv_scale_param); | |
710 | rssp->hashkey_size = HASH_KEYLEN; | |
711 | rssp->kashkey_offset = rssp->indirect_taboffset + | |
712 | rssp->indirect_tabsize; | |
713 | ||
714 | /* Set indirection table entries */ | |
715 | itab = (u32 *)(rssp + 1); | |
716 | for (i = 0; i < ITAB_NUM; i++) | |
717 | itab[i] = i % num_queue; | |
718 | ||
719 | /* Set hask key values */ | |
720 | keyp = (u8 *)((unsigned long)rssp + rssp->kashkey_offset); | |
721 | for (i = 0; i < HASH_KEYLEN; i++) | |
722 | keyp[i] = netvsc_hash_key[i]; | |
723 | ||
5b54dac8 HZ |
724 | ret = rndis_filter_send_request(rdev, request); |
725 | if (ret != 0) | |
726 | goto cleanup; | |
727 | ||
5362855a VK |
728 | wait_for_completion(&request->wait_event); |
729 | set_complete = &request->response_msg.msg.set_complete; | |
730 | if (set_complete->status != RNDIS_STATUS_SUCCESS) { | |
731 | netdev_err(ndev, "Fail to set RSS parameters:0x%x\n", | |
732 | set_complete->status); | |
733 | ret = -EINVAL; | |
5b54dac8 HZ |
734 | } |
735 | ||
736 | cleanup: | |
737 | put_rndis_request(rdev, request); | |
738 | return ret; | |
739 | } | |
740 | ||
9c26aa0d | 741 | static int rndis_filter_query_device_link_status(struct rndis_device *dev) |
fceaf24a | 742 | { |
0120ee0d | 743 | u32 size = sizeof(u32); |
6f27457b S |
744 | u32 link_status; |
745 | int ret; | |
fceaf24a | 746 | |
6f27457b | 747 | ret = rndis_filter_query_device(dev, |
0120ee0d | 748 | RNDIS_OID_GEN_MEDIA_CONNECT_STATUS, |
6f27457b | 749 | &link_status, &size); |
6f27457b S |
750 | |
751 | return ret; | |
fceaf24a HJ |
752 | } |
753 | ||
b37879e6 HZ |
754 | static int rndis_filter_query_link_speed(struct rndis_device *dev) |
755 | { | |
756 | u32 size = sizeof(u32); | |
757 | u32 link_speed; | |
758 | struct net_device_context *ndc; | |
759 | int ret; | |
760 | ||
761 | ret = rndis_filter_query_device(dev, RNDIS_OID_GEN_LINK_SPEED, | |
762 | &link_speed, &size); | |
763 | ||
764 | if (!ret) { | |
765 | ndc = netdev_priv(dev->ndev); | |
766 | ||
767 | /* The link speed reported from host is in 100bps unit, so | |
768 | * we convert it to Mbps here. | |
769 | */ | |
770 | ndc->speed = link_speed / 10000; | |
771 | } | |
772 | ||
773 | return ret; | |
774 | } | |
775 | ||
d426b2e3 | 776 | int rndis_filter_set_packet_filter(struct rndis_device *dev, u32 new_filter) |
fceaf24a | 777 | { |
e681b954 | 778 | struct rndis_request *request; |
9f33d054 | 779 | struct rndis_set_request *set; |
c2a4efdd | 780 | struct rndis_set_complete *set_complete; |
4d643114 | 781 | u32 status; |
999028cc | 782 | int ret; |
fceaf24a | 783 | |
51491167 | 784 | request = get_rndis_request(dev, RNDIS_MSG_SET, |
0120ee0d GKH |
785 | RNDIS_MESSAGE_SIZE(struct rndis_set_request) + |
786 | sizeof(u32)); | |
787 | if (!request) { | |
58ef3977 | 788 | ret = -ENOMEM; |
1c627870 | 789 | goto cleanup; |
fceaf24a HJ |
790 | } |
791 | ||
454f18a9 | 792 | /* Setup the rndis set */ |
a388eb17 HZ |
793 | set = &request->request_msg.msg.set_req; |
794 | set->oid = RNDIS_OID_GEN_CURRENT_PACKET_FILTER; | |
795 | set->info_buflen = sizeof(u32); | |
796 | set->info_buf_offset = sizeof(struct rndis_set_request); | |
fceaf24a | 797 | |
0120ee0d | 798 | memcpy((void *)(unsigned long)set + sizeof(struct rndis_set_request), |
c2a4efdd | 799 | &new_filter, sizeof(u32)); |
fceaf24a | 800 | |
9c26aa0d | 801 | ret = rndis_filter_send_request(dev, request); |
fceaf24a | 802 | if (ret != 0) |
1c627870 | 803 | goto cleanup; |
fceaf24a | 804 | |
5362855a | 805 | wait_for_completion(&request->wait_event); |
98d79690 | 806 | |
5362855a VK |
807 | set_complete = &request->response_msg.msg.set_complete; |
808 | status = set_complete->status; | |
fceaf24a | 809 | |
1c627870 | 810 | cleanup: |
fceaf24a | 811 | if (request) |
9c26aa0d | 812 | put_rndis_request(dev, request); |
fceaf24a HJ |
813 | return ret; |
814 | } | |
815 | ||
9c26aa0d | 816 | static int rndis_filter_init_device(struct rndis_device *dev) |
fceaf24a | 817 | { |
e681b954 | 818 | struct rndis_request *request; |
9f33d054 | 819 | struct rndis_initialize_request *init; |
c2a4efdd | 820 | struct rndis_initialize_complete *init_complete; |
4d643114 | 821 | u32 status; |
999028cc | 822 | int ret; |
2625466d | 823 | struct netvsc_device *nvdev = net_device_to_netvsc_device(dev->ndev); |
fceaf24a | 824 | |
51491167 | 825 | request = get_rndis_request(dev, RNDIS_MSG_INIT, |
0120ee0d GKH |
826 | RNDIS_MESSAGE_SIZE(struct rndis_initialize_request)); |
827 | if (!request) { | |
bc49b926 | 828 | ret = -ENOMEM; |
1c627870 | 829 | goto cleanup; |
fceaf24a HJ |
830 | } |
831 | ||
454f18a9 | 832 | /* Setup the rndis set */ |
a388eb17 HZ |
833 | init = &request->request_msg.msg.init_req; |
834 | init->major_ver = RNDIS_MAJOR_VERSION; | |
835 | init->minor_ver = RNDIS_MINOR_VERSION; | |
fb1d074e | 836 | init->max_xfer_size = 0x4000; |
fceaf24a | 837 | |
c2a4efdd | 838 | dev->state = RNDIS_DEV_INITIALIZING; |
fceaf24a | 839 | |
9c26aa0d | 840 | ret = rndis_filter_send_request(dev, request); |
0120ee0d | 841 | if (ret != 0) { |
c2a4efdd | 842 | dev->state = RNDIS_DEV_UNINITIALIZED; |
1c627870 | 843 | goto cleanup; |
fceaf24a HJ |
844 | } |
845 | ||
5362855a | 846 | wait_for_completion(&request->wait_event); |
fceaf24a | 847 | |
a388eb17 HZ |
848 | init_complete = &request->response_msg.msg.init_complete; |
849 | status = init_complete->status; | |
0120ee0d | 850 | if (status == RNDIS_STATUS_SUCCESS) { |
c2a4efdd | 851 | dev->state = RNDIS_DEV_INITIALIZED; |
7c3877f2 HZ |
852 | nvdev->max_pkt = init_complete->max_pkt_per_msg; |
853 | nvdev->pkt_align = 1 << init_complete->pkt_alignment_factor; | |
fceaf24a | 854 | ret = 0; |
0120ee0d | 855 | } else { |
c2a4efdd | 856 | dev->state = RNDIS_DEV_UNINITIALIZED; |
bc49b926 | 857 | ret = -EINVAL; |
fceaf24a HJ |
858 | } |
859 | ||
1c627870 | 860 | cleanup: |
fceaf24a | 861 | if (request) |
9c26aa0d | 862 | put_rndis_request(dev, request); |
fceaf24a HJ |
863 | |
864 | return ret; | |
865 | } | |
866 | ||
9c26aa0d | 867 | static void rndis_filter_halt_device(struct rndis_device *dev) |
fceaf24a | 868 | { |
e681b954 | 869 | struct rndis_request *request; |
9f33d054 | 870 | struct rndis_halt_request *halt; |
3d541ac5 VK |
871 | struct net_device_context *net_device_ctx = netdev_priv(dev->ndev); |
872 | struct netvsc_device *nvdev = net_device_ctx->nvdev; | |
873 | struct hv_device *hdev = net_device_ctx->device_ctx; | |
ae9e63bb | 874 | ulong flags; |
fceaf24a | 875 | |
454f18a9 | 876 | /* Attempt to do a rndis device halt */ |
51491167 | 877 | request = get_rndis_request(dev, RNDIS_MSG_HALT, |
0120ee0d | 878 | RNDIS_MESSAGE_SIZE(struct rndis_halt_request)); |
fceaf24a | 879 | if (!request) |
1c627870 | 880 | goto cleanup; |
fceaf24a | 881 | |
454f18a9 | 882 | /* Setup the rndis set */ |
a388eb17 HZ |
883 | halt = &request->request_msg.msg.halt_req; |
884 | halt->req_id = atomic_inc_return(&dev->new_req_id); | |
fceaf24a | 885 | |
454f18a9 | 886 | /* Ignore return since this msg is optional. */ |
9c26aa0d | 887 | rndis_filter_send_request(dev, request); |
fceaf24a | 888 | |
c2a4efdd | 889 | dev->state = RNDIS_DEV_UNINITIALIZED; |
fceaf24a | 890 | |
1c627870 | 891 | cleanup: |
ae9e63bb HZ |
892 | spin_lock_irqsave(&hdev->channel->inbound_lock, flags); |
893 | nvdev->destroy = true; | |
894 | spin_unlock_irqrestore(&hdev->channel->inbound_lock, flags); | |
895 | ||
896 | /* Wait for all send completions */ | |
897 | wait_event(nvdev->wait_drain, | |
c0b558e5 HZ |
898 | atomic_read(&nvdev->num_outstanding_sends) == 0 && |
899 | atomic_read(&nvdev->num_outstanding_recvs) == 0); | |
ae9e63bb | 900 | |
fceaf24a | 901 | if (request) |
9c26aa0d | 902 | put_rndis_request(dev, request); |
fceaf24a HJ |
903 | } |
904 | ||
9c26aa0d | 905 | static int rndis_filter_open_device(struct rndis_device *dev) |
fceaf24a | 906 | { |
0120ee0d | 907 | int ret; |
fceaf24a | 908 | |
c2a4efdd | 909 | if (dev->state != RNDIS_DEV_INITIALIZED) |
fceaf24a HJ |
910 | return 0; |
911 | ||
9c26aa0d | 912 | ret = rndis_filter_set_packet_filter(dev, |
0120ee0d | 913 | NDIS_PACKET_TYPE_BROADCAST | |
95beae90 | 914 | NDIS_PACKET_TYPE_ALL_MULTICAST | |
0120ee0d | 915 | NDIS_PACKET_TYPE_DIRECTED); |
fceaf24a | 916 | if (ret == 0) |
c2a4efdd | 917 | dev->state = RNDIS_DEV_DATAINITIALIZED; |
fceaf24a | 918 | |
fceaf24a HJ |
919 | return ret; |
920 | } | |
921 | ||
9c26aa0d | 922 | static int rndis_filter_close_device(struct rndis_device *dev) |
fceaf24a HJ |
923 | { |
924 | int ret; | |
925 | ||
c2a4efdd | 926 | if (dev->state != RNDIS_DEV_DATAINITIALIZED) |
fceaf24a HJ |
927 | return 0; |
928 | ||
9c26aa0d | 929 | ret = rndis_filter_set_packet_filter(dev, 0); |
c3582a2c HZ |
930 | if (ret == -ENODEV) |
931 | ret = 0; | |
932 | ||
fceaf24a | 933 | if (ret == 0) |
c2a4efdd | 934 | dev->state = RNDIS_DEV_INITIALIZED; |
fceaf24a | 935 | |
fceaf24a HJ |
936 | return ret; |
937 | } | |
938 | ||
5b54dac8 HZ |
939 | static void netvsc_sc_open(struct vmbus_channel *new_sc) |
940 | { | |
3d541ac5 VK |
941 | struct net_device *ndev = |
942 | hv_get_drvdata(new_sc->primary_channel->device_obj); | |
2625466d | 943 | struct netvsc_device *nvscdev = net_device_to_netvsc_device(ndev); |
5b54dac8 HZ |
944 | u16 chn_index = new_sc->offermsg.offer.sub_channel_index; |
945 | int ret; | |
b3e6b82a | 946 | unsigned long flags; |
5b54dac8 | 947 | |
5b54dac8 HZ |
948 | if (chn_index >= nvscdev->num_chn) |
949 | return; | |
950 | ||
951 | set_per_channel_state(new_sc, nvscdev->sub_cb_buf + (chn_index - 1) * | |
952 | NETVSC_PACKET_SIZE); | |
953 | ||
c0b558e5 HZ |
954 | nvscdev->mrc[chn_index].buf = vzalloc(NETVSC_RECVSLOT_MAX * |
955 | sizeof(struct recv_comp_data)); | |
956 | ||
5b54dac8 HZ |
957 | ret = vmbus_open(new_sc, nvscdev->ring_size * PAGE_SIZE, |
958 | nvscdev->ring_size * PAGE_SIZE, NULL, 0, | |
959 | netvsc_channel_cb, new_sc); | |
960 | ||
961 | if (ret == 0) | |
962 | nvscdev->chn_table[chn_index] = new_sc; | |
3f735131 HZ |
963 | |
964 | spin_lock_irqsave(&nvscdev->sc_lock, flags); | |
965 | nvscdev->num_sc_offered--; | |
966 | spin_unlock_irqrestore(&nvscdev->sc_lock, flags); | |
967 | if (nvscdev->num_sc_offered == 0) | |
968 | complete(&nvscdev->channel_init_wait); | |
5b54dac8 HZ |
969 | } |
970 | ||
bdbad576 | 971 | int rndis_filter_device_add(struct hv_device *dev, |
796cc88c | 972 | void *additional_info) |
fceaf24a HJ |
973 | { |
974 | int ret; | |
3d541ac5 VK |
975 | struct net_device *net = hv_get_drvdata(dev); |
976 | struct net_device_context *net_device_ctx = netdev_priv(net); | |
86c921af | 977 | struct netvsc_device *net_device; |
b13cc345 | 978 | struct rndis_device *rndis_device; |
3c4debad | 979 | struct netvsc_device_info *device_info = additional_info; |
4a0e70ae | 980 | struct ndis_offload_params offloads; |
5b54dac8 | 981 | struct nvsp_message *init_packet; |
5b54dac8 HZ |
982 | struct ndis_recv_scale_cap rsscap; |
983 | u32 rsscap_size = sizeof(struct ndis_recv_scale_cap); | |
4d3c9d37 | 984 | u32 mtu, size; |
e01ec219 | 985 | u32 num_rss_qs; |
b3e6b82a | 986 | u32 sc_delta; |
e01ec219 KS |
987 | const struct cpumask *node_cpu_mask; |
988 | u32 num_possible_rss_qs; | |
b3e6b82a | 989 | unsigned long flags; |
fceaf24a | 990 | |
b13cc345 S |
991 | rndis_device = get_rndis_device(); |
992 | if (!rndis_device) | |
327efbae | 993 | return -ENODEV; |
fceaf24a | 994 | |
0120ee0d GKH |
995 | /* |
996 | * Let the inner driver handle this first to create the netvsc channel | |
997 | * NOTE! Once the channel is created, we may get a receive callback | |
998 | * (RndisFilterOnReceive()) before this call is completed | |
999 | */ | |
ce5bf661 | 1000 | ret = netvsc_device_add(dev, additional_info); |
0120ee0d | 1001 | if (ret != 0) { |
b13cc345 | 1002 | kfree(rndis_device); |
fceaf24a HJ |
1003 | return ret; |
1004 | } | |
1005 | ||
454f18a9 | 1006 | /* Initialize the rndis device */ |
3d541ac5 | 1007 | net_device = net_device_ctx->nvdev; |
59995370 | 1008 | net_device->max_chn = 1; |
5b54dac8 | 1009 | net_device->num_chn = 1; |
fceaf24a | 1010 | |
b3e6b82a KS |
1011 | spin_lock_init(&net_device->sc_lock); |
1012 | ||
b13cc345 | 1013 | net_device->extension = rndis_device; |
3d541ac5 | 1014 | rndis_device->ndev = net; |
fceaf24a | 1015 | |
454f18a9 | 1016 | /* Send the rndis initialization message */ |
b13cc345 | 1017 | ret = rndis_filter_init_device(rndis_device); |
0120ee0d | 1018 | if (ret != 0) { |
5243e7bd HZ |
1019 | rndis_filter_device_remove(dev); |
1020 | return ret; | |
fceaf24a HJ |
1021 | } |
1022 | ||
4d3c9d37 HZ |
1023 | /* Get the MTU from the host */ |
1024 | size = sizeof(u32); | |
1025 | ret = rndis_filter_query_device(rndis_device, | |
1026 | RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE, | |
1027 | &mtu, &size); | |
0a1275ca VK |
1028 | if (ret == 0 && size == sizeof(u32) && mtu < net->mtu) |
1029 | net->mtu = mtu; | |
4d3c9d37 | 1030 | |
454f18a9 | 1031 | /* Get the mac address */ |
b13cc345 | 1032 | ret = rndis_filter_query_device_mac(rndis_device); |
0120ee0d | 1033 | if (ret != 0) { |
5243e7bd HZ |
1034 | rndis_filter_device_remove(dev); |
1035 | return ret; | |
fceaf24a HJ |
1036 | } |
1037 | ||
3c4debad | 1038 | memcpy(device_info->mac_adr, rndis_device->hw_mac_adr, ETH_ALEN); |
fceaf24a | 1039 | |
4a0e70ae KS |
1040 | /* Turn on the offloads; the host supports all of the relevant |
1041 | * offloads. | |
1042 | */ | |
1043 | memset(&offloads, 0, sizeof(struct ndis_offload_params)); | |
1044 | /* A value of zero means "no change"; now turn on what we | |
1045 | * want. | |
1046 | */ | |
1047 | offloads.ip_v4_csum = NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED; | |
1048 | offloads.tcp_ip_v4_csum = NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED; | |
1049 | offloads.udp_ip_v4_csum = NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED; | |
1050 | offloads.tcp_ip_v6_csum = NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED; | |
1051 | offloads.udp_ip_v6_csum = NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED; | |
1052 | offloads.lso_v2_ipv4 = NDIS_OFFLOAD_PARAMETERS_LSOV2_ENABLED; | |
1053 | ||
426d9541 | 1054 | ret = rndis_filter_set_offload_params(net, &offloads); |
4a0e70ae KS |
1055 | if (ret) |
1056 | goto err_dev_remv; | |
1057 | ||
b13cc345 | 1058 | rndis_filter_query_device_link_status(rndis_device); |
fceaf24a | 1059 | |
6f27457b | 1060 | device_info->link_state = rndis_device->link_state; |
eb335bc4 | 1061 | |
6f27457b | 1062 | dev_info(&dev->device, "Device MAC %pM link state %s\n", |
b13cc345 | 1063 | rndis_device->hw_mac_adr, |
6f27457b | 1064 | device_info->link_state ? "down" : "up"); |
fceaf24a | 1065 | |
5b54dac8 HZ |
1066 | if (net_device->nvsp_version < NVSP_PROTOCOL_VERSION_5) |
1067 | return 0; | |
1068 | ||
b37879e6 HZ |
1069 | rndis_filter_query_link_speed(rndis_device); |
1070 | ||
5b54dac8 HZ |
1071 | /* vRSS setup */ |
1072 | memset(&rsscap, 0, rsscap_size); | |
1073 | ret = rndis_filter_query_device(rndis_device, | |
1074 | OID_GEN_RECEIVE_SCALE_CAPABILITIES, | |
1075 | &rsscap, &rsscap_size); | |
1076 | if (ret || rsscap.num_recv_que < 2) | |
1077 | goto out; | |
1078 | ||
9efc2f7d | 1079 | net_device->max_chn = min_t(u32, VRSS_CHANNEL_MAX, rsscap.num_recv_que); |
e01ec219 | 1080 | |
9efc2f7d | 1081 | num_rss_qs = min(device_info->max_num_vrss_chns, net_device->max_chn); |
e01ec219 KS |
1082 | |
1083 | /* | |
1084 | * We will limit the VRSS channels to the number CPUs in the NUMA node | |
1085 | * the primary channel is currently bound to. | |
1086 | */ | |
1087 | node_cpu_mask = cpumask_of_node(cpu_to_node(dev->channel->target_cpu)); | |
1088 | num_possible_rss_qs = cpumask_weight(node_cpu_mask); | |
8ebdcc52 AS |
1089 | |
1090 | /* We will use the given number of channels if available. */ | |
1091 | if (device_info->num_chn && device_info->num_chn < net_device->max_chn) | |
1092 | net_device->num_chn = device_info->num_chn; | |
1093 | else | |
1094 | net_device->num_chn = min(num_possible_rss_qs, num_rss_qs); | |
e01ec219 | 1095 | |
b3e6b82a KS |
1096 | num_rss_qs = net_device->num_chn - 1; |
1097 | net_device->num_sc_offered = num_rss_qs; | |
1098 | ||
5b54dac8 HZ |
1099 | if (net_device->num_chn == 1) |
1100 | goto out; | |
1101 | ||
1102 | net_device->sub_cb_buf = vzalloc((net_device->num_chn - 1) * | |
1103 | NETVSC_PACKET_SIZE); | |
1104 | if (!net_device->sub_cb_buf) { | |
1105 | net_device->num_chn = 1; | |
1106 | dev_info(&dev->device, "No memory for subchannels.\n"); | |
1107 | goto out; | |
1108 | } | |
1109 | ||
1110 | vmbus_set_sc_create_callback(dev->channel, netvsc_sc_open); | |
1111 | ||
1112 | init_packet = &net_device->channel_init_pkt; | |
1113 | memset(init_packet, 0, sizeof(struct nvsp_message)); | |
1114 | init_packet->hdr.msg_type = NVSP_MSG5_TYPE_SUBCHANNEL; | |
1115 | init_packet->msg.v5_msg.subchn_req.op = NVSP_SUBCHANNEL_ALLOCATE; | |
1116 | init_packet->msg.v5_msg.subchn_req.num_subchannels = | |
1117 | net_device->num_chn - 1; | |
1118 | ret = vmbus_sendpacket(dev->channel, init_packet, | |
1119 | sizeof(struct nvsp_message), | |
1120 | (unsigned long)init_packet, | |
1121 | VM_PKT_DATA_INBAND, | |
1122 | VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED); | |
1123 | if (ret) | |
1124 | goto out; | |
5362855a VK |
1125 | wait_for_completion(&net_device->channel_init_wait); |
1126 | ||
5b54dac8 HZ |
1127 | if (init_packet->msg.v5_msg.subchn_comp.status != |
1128 | NVSP_STAT_SUCCESS) { | |
1129 | ret = -ENODEV; | |
1130 | goto out; | |
1131 | } | |
1132 | net_device->num_chn = 1 + | |
1133 | init_packet->msg.v5_msg.subchn_comp.num_subchannels; | |
1134 | ||
5b54dac8 HZ |
1135 | ret = rndis_filter_set_rss_param(rndis_device, net_device->num_chn); |
1136 | ||
b3e6b82a | 1137 | /* |
d66ab514 | 1138 | * Set the number of sub-channels to be received. |
b3e6b82a KS |
1139 | */ |
1140 | spin_lock_irqsave(&net_device->sc_lock, flags); | |
1141 | sc_delta = num_rss_qs - (net_device->num_chn - 1); | |
1142 | net_device->num_sc_offered -= sc_delta; | |
1143 | spin_unlock_irqrestore(&net_device->sc_lock, flags); | |
1144 | ||
5b54dac8 | 1145 | out: |
59995370 AS |
1146 | if (ret) { |
1147 | net_device->max_chn = 1; | |
5b54dac8 | 1148 | net_device->num_chn = 1; |
d66ab514 | 1149 | net_device->num_sc_offered = 0; |
59995370 | 1150 | } |
b3e6b82a | 1151 | |
5b54dac8 | 1152 | return 0; /* return 0 because primary channel can be used alone */ |
4a0e70ae KS |
1153 | |
1154 | err_dev_remv: | |
1155 | rndis_filter_device_remove(dev); | |
1156 | return ret; | |
fceaf24a HJ |
1157 | } |
1158 | ||
df06bcff | 1159 | void rndis_filter_device_remove(struct hv_device *dev) |
fceaf24a | 1160 | { |
2625466d | 1161 | struct netvsc_device *net_dev = hv_device_to_netvsc_device(dev); |
53d21fdb | 1162 | struct rndis_device *rndis_dev = net_dev->extension; |
d66ab514 HZ |
1163 | |
1164 | /* If not all subchannel offers are complete, wait for them until | |
1165 | * completion to avoid race. | |
1166 | */ | |
5362855a VK |
1167 | if (net_dev->num_sc_offered > 0) |
1168 | wait_for_completion(&net_dev->channel_init_wait); | |
fceaf24a | 1169 | |
454f18a9 | 1170 | /* Halt and release the rndis device */ |
9c26aa0d | 1171 | rndis_filter_halt_device(rndis_dev); |
fceaf24a | 1172 | |
c2a4efdd | 1173 | kfree(rndis_dev); |
53d21fdb | 1174 | net_dev->extension = NULL; |
fceaf24a | 1175 | |
3fae5c8f | 1176 | netvsc_device_remove(dev); |
fceaf24a HJ |
1177 | } |
1178 | ||
2f5fa6c8 | 1179 | int rndis_filter_open(struct netvsc_device *nvdev) |
fceaf24a | 1180 | { |
2f5fa6c8 | 1181 | if (!nvdev) |
8a62d716 BP |
1182 | return -EINVAL; |
1183 | ||
2f5fa6c8 | 1184 | if (atomic_inc_return(&nvdev->open_cnt) != 1) |
84bf9cef KS |
1185 | return 0; |
1186 | ||
2f5fa6c8 | 1187 | return rndis_filter_open_device(nvdev->extension); |
fceaf24a HJ |
1188 | } |
1189 | ||
2f5fa6c8 | 1190 | int rndis_filter_close(struct netvsc_device *nvdev) |
fceaf24a | 1191 | { |
5fccab3b | 1192 | if (!nvdev) |
8a62d716 BP |
1193 | return -EINVAL; |
1194 | ||
84bf9cef KS |
1195 | if (atomic_dec_return(&nvdev->open_cnt) != 0) |
1196 | return 0; | |
1197 | ||
5fccab3b | 1198 | return rndis_filter_close_device(nvdev->extension); |
fceaf24a | 1199 | } |