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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> |
d6472302 | 30 | #include <linux/vmalloc.h> |
3f335ea2 | 31 | |
5ca7252a | 32 | #include "hyperv_net.h" |
fceaf24a | 33 | |
4f19c0d8 | 34 | static void rndis_set_multicast(struct work_struct *w); |
fceaf24a | 35 | |
5b54dac8 | 36 | #define RNDIS_EXT_LEN PAGE_SIZE |
e681b954 | 37 | struct rndis_request { |
c2a4efdd | 38 | struct list_head list_ent; |
98d79690 | 39 | struct completion wait_event; |
fceaf24a | 40 | |
a3a6cab5 | 41 | struct rndis_message response_msg; |
0120ee0d | 42 | /* |
a3a6cab5 HZ |
43 | * The buffer for extended info after the RNDIS response message. It's |
44 | * referenced based on the data offset in the RNDIS message. Its size | |
45 | * is enough for current needs, and should be sufficient for the near | |
46 | * future. | |
0120ee0d | 47 | */ |
a3a6cab5 | 48 | u8 response_ext[RNDIS_EXT_LEN]; |
fceaf24a | 49 | |
454f18a9 | 50 | /* Simplify allocation by having a netvsc packet inline */ |
c2a4efdd | 51 | struct hv_netvsc_packet pkt; |
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 | |
962f3fee | 61 | static const u8 netvsc_hash_key[NETVSC_HASH_KEYLEN] = { |
62 | 0x6d, 0x5a, 0x56, 0xda, 0x25, 0x5b, 0x0e, 0xc2, | |
63 | 0x41, 0x67, 0x25, 0x3d, 0x43, 0xa3, 0x8f, 0xb0, | |
64 | 0xd0, 0xca, 0x2b, 0xcb, 0xae, 0x7b, 0x30, 0xb4, | |
65 | 0x77, 0xcb, 0x2d, 0xa3, 0x80, 0x30, 0xf2, 0x0c, | |
66 | 0x6a, 0x42, 0xb7, 0x3b, 0xbe, 0xac, 0x01, 0xfa | |
67 | }; | |
68 | ||
9c26aa0d | 69 | static struct rndis_device *get_rndis_device(void) |
fceaf24a | 70 | { |
e681b954 | 71 | struct rndis_device *device; |
fceaf24a | 72 | |
e681b954 | 73 | device = kzalloc(sizeof(struct rndis_device), GFP_KERNEL); |
fceaf24a | 74 | if (!device) |
fceaf24a | 75 | return NULL; |
fceaf24a | 76 | |
880fb89c | 77 | spin_lock_init(&device->request_lock); |
fceaf24a | 78 | |
c2a4efdd | 79 | INIT_LIST_HEAD(&device->req_list); |
4f19c0d8 | 80 | INIT_WORK(&device->mcast_work, rndis_set_multicast); |
fceaf24a | 81 | |
c2a4efdd | 82 | device->state = RNDIS_DEV_UNINITIALIZED; |
fceaf24a HJ |
83 | |
84 | return device; | |
85 | } | |
86 | ||
9c26aa0d | 87 | static struct rndis_request *get_rndis_request(struct rndis_device *dev, |
c2a4efdd HZ |
88 | u32 msg_type, |
89 | u32 msg_len) | |
fceaf24a | 90 | { |
e681b954 | 91 | struct rndis_request *request; |
c2a4efdd | 92 | struct rndis_message *rndis_msg; |
9f33d054 | 93 | struct rndis_set_request *set; |
880fb89c | 94 | unsigned long flags; |
fceaf24a | 95 | |
e681b954 | 96 | request = kzalloc(sizeof(struct rndis_request), GFP_KERNEL); |
fceaf24a | 97 | if (!request) |
fceaf24a | 98 | return NULL; |
fceaf24a | 99 | |
98d79690 | 100 | init_completion(&request->wait_event); |
fceaf24a | 101 | |
c2a4efdd | 102 | rndis_msg = &request->request_msg; |
a388eb17 HZ |
103 | rndis_msg->ndis_msg_type = msg_type; |
104 | rndis_msg->msg_len = msg_len; | |
fceaf24a | 105 | |
5b54dac8 HZ |
106 | request->pkt.q_idx = 0; |
107 | ||
0120ee0d GKH |
108 | /* |
109 | * Set the request id. This field is always after the rndis header for | |
110 | * request/response packet types so we just used the SetRequest as a | |
111 | * template | |
112 | */ | |
a388eb17 HZ |
113 | set = &rndis_msg->msg.set_req; |
114 | set->req_id = atomic_inc_return(&dev->new_req_id); | |
fceaf24a | 115 | |
454f18a9 | 116 | /* Add to the request list */ |
c2a4efdd HZ |
117 | spin_lock_irqsave(&dev->request_lock, flags); |
118 | list_add_tail(&request->list_ent, &dev->req_list); | |
119 | spin_unlock_irqrestore(&dev->request_lock, flags); | |
fceaf24a HJ |
120 | |
121 | return request; | |
122 | } | |
123 | ||
9c26aa0d | 124 | static void put_rndis_request(struct rndis_device *dev, |
c2a4efdd | 125 | struct rndis_request *req) |
fceaf24a | 126 | { |
880fb89c GKH |
127 | unsigned long flags; |
128 | ||
c2a4efdd HZ |
129 | spin_lock_irqsave(&dev->request_lock, flags); |
130 | list_del(&req->list_ent); | |
131 | spin_unlock_irqrestore(&dev->request_lock, flags); | |
fceaf24a | 132 | |
c2a4efdd | 133 | kfree(req); |
fceaf24a HJ |
134 | } |
135 | ||
729a2849 | 136 | static void dump_rndis_message(struct hv_device *hv_dev, |
dc54a08c | 137 | const struct rndis_message *rndis_msg) |
fceaf24a | 138 | { |
3d541ac5 | 139 | struct net_device *netdev = hv_get_drvdata(hv_dev); |
729a2849 | 140 | |
a388eb17 | 141 | switch (rndis_msg->ndis_msg_type) { |
51491167 LW |
142 | case RNDIS_MSG_PACKET: |
143 | netdev_dbg(netdev, "RNDIS_MSG_PACKET (len %u, " | |
0120ee0d GKH |
144 | "data offset %u data len %u, # oob %u, " |
145 | "oob offset %u, oob len %u, pkt offset %u, " | |
729a2849 | 146 | "pkt len %u\n", |
a388eb17 HZ |
147 | rndis_msg->msg_len, |
148 | rndis_msg->msg.pkt.data_offset, | |
149 | rndis_msg->msg.pkt.data_len, | |
150 | rndis_msg->msg.pkt.num_oob_data_elements, | |
151 | rndis_msg->msg.pkt.oob_data_offset, | |
152 | rndis_msg->msg.pkt.oob_data_len, | |
153 | rndis_msg->msg.pkt.per_pkt_info_offset, | |
154 | rndis_msg->msg.pkt.per_pkt_info_len); | |
fceaf24a HJ |
155 | break; |
156 | ||
51491167 LW |
157 | case RNDIS_MSG_INIT_C: |
158 | netdev_dbg(netdev, "RNDIS_MSG_INIT_C " | |
0120ee0d GKH |
159 | "(len %u, id 0x%x, status 0x%x, major %d, minor %d, " |
160 | "device flags %d, max xfer size 0x%x, max pkts %u, " | |
729a2849 | 161 | "pkt aligned %u)\n", |
a388eb17 HZ |
162 | rndis_msg->msg_len, |
163 | rndis_msg->msg.init_complete.req_id, | |
164 | rndis_msg->msg.init_complete.status, | |
165 | rndis_msg->msg.init_complete.major_ver, | |
166 | rndis_msg->msg.init_complete.minor_ver, | |
167 | rndis_msg->msg.init_complete.dev_flags, | |
168 | rndis_msg->msg.init_complete.max_xfer_size, | |
169 | rndis_msg->msg.init_complete. | |
170 | max_pkt_per_msg, | |
171 | rndis_msg->msg.init_complete. | |
172 | pkt_alignment_factor); | |
fceaf24a HJ |
173 | break; |
174 | ||
51491167 LW |
175 | case RNDIS_MSG_QUERY_C: |
176 | netdev_dbg(netdev, "RNDIS_MSG_QUERY_C " | |
0120ee0d | 177 | "(len %u, id 0x%x, status 0x%x, buf len %u, " |
729a2849 | 178 | "buf offset %u)\n", |
a388eb17 HZ |
179 | rndis_msg->msg_len, |
180 | rndis_msg->msg.query_complete.req_id, | |
181 | rndis_msg->msg.query_complete.status, | |
182 | rndis_msg->msg.query_complete. | |
183 | info_buflen, | |
184 | rndis_msg->msg.query_complete. | |
185 | info_buf_offset); | |
fceaf24a HJ |
186 | break; |
187 | ||
51491167 | 188 | case RNDIS_MSG_SET_C: |
729a2849 | 189 | netdev_dbg(netdev, |
51491167 | 190 | "RNDIS_MSG_SET_C (len %u, id 0x%x, status 0x%x)\n", |
a388eb17 HZ |
191 | rndis_msg->msg_len, |
192 | rndis_msg->msg.set_complete.req_id, | |
193 | rndis_msg->msg.set_complete.status); | |
fceaf24a HJ |
194 | break; |
195 | ||
51491167 LW |
196 | case RNDIS_MSG_INDICATE: |
197 | netdev_dbg(netdev, "RNDIS_MSG_INDICATE " | |
729a2849 | 198 | "(len %u, status 0x%x, buf len %u, buf offset %u)\n", |
a388eb17 HZ |
199 | rndis_msg->msg_len, |
200 | rndis_msg->msg.indicate_status.status, | |
201 | rndis_msg->msg.indicate_status.status_buflen, | |
202 | rndis_msg->msg.indicate_status.status_buf_offset); | |
fceaf24a HJ |
203 | break; |
204 | ||
205 | default: | |
729a2849 | 206 | netdev_dbg(netdev, "0x%x (len %u)\n", |
a388eb17 HZ |
207 | rndis_msg->ndis_msg_type, |
208 | rndis_msg->msg_len); | |
fceaf24a HJ |
209 | break; |
210 | } | |
211 | } | |
212 | ||
9c26aa0d | 213 | static int rndis_filter_send_request(struct rndis_device *dev, |
c2a4efdd | 214 | struct rndis_request *req) |
fceaf24a | 215 | { |
0120ee0d | 216 | int ret; |
4193d4f4 | 217 | struct hv_netvsc_packet *packet; |
b08cc791 | 218 | struct hv_page_buffer page_buf[2]; |
a9f2e2d6 | 219 | struct hv_page_buffer *pb = page_buf; |
3d541ac5 | 220 | struct net_device_context *net_device_ctx = netdev_priv(dev->ndev); |
fceaf24a | 221 | |
454f18a9 | 222 | /* Setup the packet to send it */ |
c2a4efdd | 223 | packet = &req->pkt; |
fceaf24a | 224 | |
a388eb17 | 225 | packet->total_data_buflen = req->request_msg.msg_len; |
72a2f5bd | 226 | packet->page_buf_cnt = 1; |
fceaf24a | 227 | |
a9f2e2d6 | 228 | pb[0].pfn = virt_to_phys(&req->request_msg) >> |
0120ee0d | 229 | PAGE_SHIFT; |
a9f2e2d6 KS |
230 | pb[0].len = req->request_msg.msg_len; |
231 | pb[0].offset = | |
c2a4efdd | 232 | (unsigned long)&req->request_msg & (PAGE_SIZE - 1); |
fceaf24a | 233 | |
99e3fcfa | 234 | /* Add one page_buf when request_msg crossing page boundary */ |
a9f2e2d6 | 235 | if (pb[0].offset + pb[0].len > PAGE_SIZE) { |
99e3fcfa | 236 | packet->page_buf_cnt++; |
a9f2e2d6 KS |
237 | pb[0].len = PAGE_SIZE - |
238 | pb[0].offset; | |
239 | pb[1].pfn = virt_to_phys((void *)&req->request_msg | |
240 | + pb[0].len) >> PAGE_SHIFT; | |
241 | pb[1].offset = 0; | |
242 | pb[1].len = req->request_msg.msg_len - | |
243 | pb[0].len; | |
99e3fcfa HZ |
244 | } |
245 | ||
3d541ac5 | 246 | ret = netvsc_send(net_device_ctx->device_ctx, packet, NULL, &pb, NULL); |
fceaf24a HJ |
247 | return ret; |
248 | } | |
249 | ||
1b07da51 HZ |
250 | static void rndis_set_link_state(struct rndis_device *rdev, |
251 | struct rndis_request *request) | |
252 | { | |
253 | u32 link_status; | |
254 | struct rndis_query_complete *query_complete; | |
255 | ||
256 | query_complete = &request->response_msg.msg.query_complete; | |
257 | ||
258 | if (query_complete->status == RNDIS_STATUS_SUCCESS && | |
259 | query_complete->info_buflen == sizeof(u32)) { | |
260 | memcpy(&link_status, (void *)((unsigned long)query_complete + | |
261 | query_complete->info_buf_offset), sizeof(u32)); | |
262 | rdev->link_state = link_status != 0; | |
263 | } | |
264 | } | |
265 | ||
9c26aa0d | 266 | static void rndis_filter_receive_response(struct rndis_device *dev, |
c2a4efdd | 267 | struct rndis_message *resp) |
fceaf24a | 268 | { |
e681b954 | 269 | struct rndis_request *request = NULL; |
0e727613 | 270 | bool found = false; |
880fb89c | 271 | unsigned long flags; |
3d541ac5 | 272 | struct net_device *ndev = dev->ndev; |
fceaf24a | 273 | |
c2a4efdd HZ |
274 | spin_lock_irqsave(&dev->request_lock, flags); |
275 | list_for_each_entry(request, &dev->req_list, list_ent) { | |
0120ee0d GKH |
276 | /* |
277 | * All request/response message contains RequestId as the 1st | |
278 | * field | |
279 | */ | |
a388eb17 HZ |
280 | if (request->request_msg.msg.init_req.req_id |
281 | == resp->msg.init_complete.req_id) { | |
0e727613 | 282 | found = true; |
fceaf24a HJ |
283 | break; |
284 | } | |
285 | } | |
c2a4efdd | 286 | spin_unlock_irqrestore(&dev->request_lock, flags); |
fceaf24a | 287 | |
0120ee0d | 288 | if (found) { |
a3a6cab5 HZ |
289 | if (resp->msg_len <= |
290 | sizeof(struct rndis_message) + RNDIS_EXT_LEN) { | |
c2a4efdd | 291 | memcpy(&request->response_msg, resp, |
a388eb17 | 292 | resp->msg_len); |
1b07da51 HZ |
293 | if (request->request_msg.ndis_msg_type == |
294 | RNDIS_MSG_QUERY && request->request_msg.msg. | |
295 | query_req.oid == RNDIS_OID_GEN_MEDIA_CONNECT_STATUS) | |
296 | rndis_set_link_state(dev, request); | |
0120ee0d | 297 | } else { |
d9871158 | 298 | netdev_err(ndev, |
eb335bc4 HJ |
299 | "rndis response buffer overflow " |
300 | "detected (size %u max %zu)\n", | |
301 | resp->msg_len, | |
86eedacc | 302 | sizeof(struct rndis_message)); |
0120ee0d | 303 | |
a388eb17 | 304 | if (resp->ndis_msg_type == |
51491167 | 305 | RNDIS_MSG_RESET_C) { |
0120ee0d | 306 | /* does not have a request id field */ |
a388eb17 | 307 | request->response_msg.msg.reset_complete. |
007e5c8e | 308 | status = RNDIS_STATUS_BUFFER_OVERFLOW; |
0120ee0d | 309 | } else { |
a388eb17 HZ |
310 | request->response_msg.msg. |
311 | init_complete.status = | |
007e5c8e | 312 | RNDIS_STATUS_BUFFER_OVERFLOW; |
fceaf24a HJ |
313 | } |
314 | } | |
315 | ||
98d79690 | 316 | complete(&request->wait_event); |
0120ee0d | 317 | } else { |
d9871158 | 318 | netdev_err(ndev, |
eb335bc4 HJ |
319 | "no rndis request found for this response " |
320 | "(id 0x%x res type 0x%x)\n", | |
321 | resp->msg.init_complete.req_id, | |
322 | resp->ndis_msg_type); | |
fceaf24a | 323 | } |
fceaf24a HJ |
324 | } |
325 | ||
1f5f3a75 HZ |
326 | /* |
327 | * Get the Per-Packet-Info with the specified type | |
328 | * return NULL if not found. | |
329 | */ | |
330 | static inline void *rndis_get_ppi(struct rndis_packet *rpkt, u32 type) | |
331 | { | |
332 | struct rndis_per_packet_info *ppi; | |
333 | int len; | |
334 | ||
335 | if (rpkt->per_pkt_info_offset == 0) | |
336 | return NULL; | |
337 | ||
338 | ppi = (struct rndis_per_packet_info *)((ulong)rpkt + | |
339 | rpkt->per_pkt_info_offset); | |
340 | len = rpkt->per_pkt_info_len; | |
341 | ||
342 | while (len > 0) { | |
343 | if (ppi->type == type) | |
344 | return (void *)((ulong)ppi + ppi->ppi_offset); | |
345 | len -= ppi->size; | |
346 | ppi = (struct rndis_per_packet_info *)((ulong)ppi + ppi->size); | |
347 | } | |
348 | ||
349 | return NULL; | |
350 | } | |
351 | ||
dc54a08c | 352 | static int rndis_filter_receive_data(struct net_device *ndev, |
353 | struct rndis_device *dev, | |
354 | struct rndis_message *msg, | |
355 | struct vmbus_channel *channel, | |
356 | void *data, u32 data_buflen) | |
fceaf24a | 357 | { |
dc54a08c | 358 | struct rndis_packet *rndis_pkt = &msg->msg.pkt; |
359 | const struct ndis_tcp_ip_checksum_info *csum_info; | |
360 | const struct ndis_pkt_8021q_info *vlan; | |
c2a4efdd | 361 | u32 data_offset; |
fceaf24a | 362 | |
454f18a9 | 363 | /* Remove the rndis header and pass it back up the stack */ |
a388eb17 | 364 | data_offset = RNDIS_HEADER_SIZE + rndis_pkt->data_offset; |
fceaf24a | 365 | |
dc54a08c | 366 | data_buflen -= data_offset; |
4b8a8bc9 WY |
367 | |
368 | /* | |
369 | * Make sure we got a valid RNDIS message, now total_data_buflen | |
370 | * should be the data packet size plus the trailer padding size | |
371 | */ | |
dc54a08c | 372 | if (unlikely(data_buflen < rndis_pkt->data_len)) { |
3d541ac5 | 373 | netdev_err(dev->ndev, "rndis message buffer " |
4b8a8bc9 WY |
374 | "overflow detected (got %u, min %u)" |
375 | "...dropping this message!\n", | |
dc54a08c | 376 | data_buflen, rndis_pkt->data_len); |
10082f98 | 377 | return NVSP_STAT_FAIL; |
4b8a8bc9 WY |
378 | } |
379 | ||
dc54a08c | 380 | vlan = rndis_get_ppi(rndis_pkt, IEEE_8021Q_INFO); |
381 | ||
4b8a8bc9 WY |
382 | /* |
383 | * Remove the rndis trailer padding from rndis packet message | |
384 | * rndis_pkt->data_len tell us the real data length, we only copy | |
385 | * the data packet to the stack, without the rndis trailer padding | |
386 | */ | |
dc54a08c | 387 | data = (void *)((unsigned long)data + data_offset); |
e3d605ed | 388 | csum_info = rndis_get_ppi(rndis_pkt, TCPIP_CHKSUM_PKTINFO); |
dc54a08c | 389 | return netvsc_recv_callback(ndev, channel, |
390 | data, rndis_pkt->data_len, | |
391 | csum_info, vlan); | |
fceaf24a HJ |
392 | } |
393 | ||
dc54a08c | 394 | int rndis_filter_receive(struct net_device *ndev, |
395 | struct netvsc_device *net_dev, | |
396 | struct hv_device *dev, | |
397 | struct vmbus_channel *channel, | |
398 | void *data, u32 buflen) | |
fceaf24a | 399 | { |
3d541ac5 | 400 | struct net_device_context *net_device_ctx = netdev_priv(ndev); |
dc54a08c | 401 | struct rndis_device *rndis_dev = net_dev->extension; |
402 | struct rndis_message *rndis_msg = data; | |
8a62d716 | 403 | |
454f18a9 | 404 | /* Make sure the rndis device state is initialized */ |
dc54a08c | 405 | if (unlikely(!rndis_dev)) { |
406 | netif_err(net_device_ctx, rx_err, ndev, | |
407 | "got rndis message but no rndis device!\n"); | |
408 | return NVSP_STAT_FAIL; | |
fceaf24a HJ |
409 | } |
410 | ||
dc54a08c | 411 | if (unlikely(rndis_dev->state == RNDIS_DEV_UNINITIALIZED)) { |
412 | netif_err(net_device_ctx, rx_err, ndev, | |
413 | "got rndis message uninitialized\n"); | |
414 | return NVSP_STAT_FAIL; | |
fceaf24a HJ |
415 | } |
416 | ||
dc54a08c | 417 | if (netif_msg_rx_status(net_device_ctx)) |
3f300ff4 | 418 | dump_rndis_message(dev, rndis_msg); |
fceaf24a | 419 | |
ef31bef6 | 420 | switch (rndis_msg->ndis_msg_type) { |
51491167 | 421 | case RNDIS_MSG_PACKET: |
dc54a08c | 422 | return rndis_filter_receive_data(ndev, rndis_dev, rndis_msg, |
423 | channel, data, buflen); | |
51491167 LW |
424 | case RNDIS_MSG_INIT_C: |
425 | case RNDIS_MSG_QUERY_C: | |
426 | case RNDIS_MSG_SET_C: | |
0120ee0d | 427 | /* completion msgs */ |
ef31bef6 | 428 | rndis_filter_receive_response(rndis_dev, rndis_msg); |
fceaf24a HJ |
429 | break; |
430 | ||
51491167 | 431 | case RNDIS_MSG_INDICATE: |
0120ee0d | 432 | /* notification msgs */ |
3a494e71 | 433 | netvsc_linkstatus_callback(dev, rndis_msg); |
fceaf24a HJ |
434 | break; |
435 | default: | |
d9871158 | 436 | netdev_err(ndev, |
eb335bc4 | 437 | "unhandled rndis message (type %u len %u)\n", |
ef31bef6 HZ |
438 | rndis_msg->ndis_msg_type, |
439 | rndis_msg->msg_len); | |
fceaf24a HJ |
440 | break; |
441 | } | |
442 | ||
dc54a08c | 443 | return 0; |
fceaf24a HJ |
444 | } |
445 | ||
9c26aa0d | 446 | static int rndis_filter_query_device(struct rndis_device *dev, u32 oid, |
c2a4efdd | 447 | void *result, u32 *result_size) |
fceaf24a | 448 | { |
e681b954 | 449 | struct rndis_request *request; |
c2a4efdd | 450 | u32 inresult_size = *result_size; |
9f33d054 | 451 | struct rndis_query_request *query; |
c2a4efdd | 452 | struct rndis_query_complete *query_complete; |
0120ee0d | 453 | int ret = 0; |
fceaf24a | 454 | |
c2a4efdd | 455 | if (!result) |
8a62d716 | 456 | return -EINVAL; |
fceaf24a | 457 | |
c2a4efdd | 458 | *result_size = 0; |
51491167 | 459 | request = get_rndis_request(dev, RNDIS_MSG_QUERY, |
0120ee0d GKH |
460 | RNDIS_MESSAGE_SIZE(struct rndis_query_request)); |
461 | if (!request) { | |
de6e0580 | 462 | ret = -ENOMEM; |
1c627870 | 463 | goto cleanup; |
fceaf24a HJ |
464 | } |
465 | ||
454f18a9 | 466 | /* Setup the rndis query */ |
a388eb17 HZ |
467 | query = &request->request_msg.msg.query_req; |
468 | query->oid = oid; | |
469 | query->info_buf_offset = sizeof(struct rndis_query_request); | |
470 | query->info_buflen = 0; | |
471 | query->dev_vc_handle = 0; | |
fceaf24a | 472 | |
23312a3b | 473 | if (oid == OID_TCP_OFFLOAD_HARDWARE_CAPABILITIES) { |
474 | struct net_device_context *ndevctx = netdev_priv(dev->ndev); | |
475 | struct netvsc_device *nvdev = ndevctx->nvdev; | |
476 | struct ndis_offload *hwcaps; | |
477 | u32 nvsp_version = nvdev->nvsp_version; | |
478 | u8 ndis_rev; | |
479 | size_t size; | |
480 | ||
481 | if (nvsp_version >= NVSP_PROTOCOL_VERSION_5) { | |
482 | ndis_rev = NDIS_OFFLOAD_PARAMETERS_REVISION_3; | |
483 | size = NDIS_OFFLOAD_SIZE; | |
484 | } else if (nvsp_version >= NVSP_PROTOCOL_VERSION_4) { | |
485 | ndis_rev = NDIS_OFFLOAD_PARAMETERS_REVISION_2; | |
486 | size = NDIS_OFFLOAD_SIZE_6_1; | |
487 | } else { | |
488 | ndis_rev = NDIS_OFFLOAD_PARAMETERS_REVISION_1; | |
489 | size = NDIS_OFFLOAD_SIZE_6_0; | |
490 | } | |
491 | ||
492 | request->request_msg.msg_len += size; | |
493 | query->info_buflen = size; | |
494 | hwcaps = (struct ndis_offload *) | |
495 | ((unsigned long)query + query->info_buf_offset); | |
496 | ||
497 | hwcaps->header.type = NDIS_OBJECT_TYPE_OFFLOAD; | |
498 | hwcaps->header.revision = ndis_rev; | |
499 | hwcaps->header.size = size; | |
500 | ||
501 | } else if (oid == OID_GEN_RECEIVE_SCALE_CAPABILITIES) { | |
5b54dac8 HZ |
502 | struct ndis_recv_scale_cap *cap; |
503 | ||
504 | request->request_msg.msg_len += | |
505 | sizeof(struct ndis_recv_scale_cap); | |
506 | query->info_buflen = sizeof(struct ndis_recv_scale_cap); | |
507 | cap = (struct ndis_recv_scale_cap *)((unsigned long)query + | |
508 | query->info_buf_offset); | |
509 | cap->hdr.type = NDIS_OBJECT_TYPE_RSS_CAPABILITIES; | |
510 | cap->hdr.rev = NDIS_RECEIVE_SCALE_CAPABILITIES_REVISION_2; | |
511 | cap->hdr.size = sizeof(struct ndis_recv_scale_cap); | |
512 | } | |
513 | ||
9c26aa0d | 514 | ret = rndis_filter_send_request(dev, request); |
fceaf24a | 515 | if (ret != 0) |
1c627870 | 516 | goto cleanup; |
fceaf24a | 517 | |
5362855a | 518 | wait_for_completion(&request->wait_event); |
fceaf24a | 519 | |
454f18a9 | 520 | /* Copy the response back */ |
a388eb17 | 521 | query_complete = &request->response_msg.msg.query_complete; |
fceaf24a | 522 | |
a388eb17 | 523 | if (query_complete->info_buflen > inresult_size) { |
fceaf24a | 524 | ret = -1; |
1c627870 | 525 | goto cleanup; |
fceaf24a HJ |
526 | } |
527 | ||
c2a4efdd HZ |
528 | memcpy(result, |
529 | (void *)((unsigned long)query_complete + | |
a388eb17 HZ |
530 | query_complete->info_buf_offset), |
531 | query_complete->info_buflen); | |
fceaf24a | 532 | |
a388eb17 | 533 | *result_size = query_complete->info_buflen; |
fceaf24a | 534 | |
1c627870 | 535 | cleanup: |
fceaf24a | 536 | if (request) |
9c26aa0d | 537 | put_rndis_request(dev, request); |
fceaf24a HJ |
538 | |
539 | return ret; | |
540 | } | |
541 | ||
23312a3b | 542 | /* Get the hardware offload capabilities */ |
543 | static int | |
544 | rndis_query_hwcaps(struct rndis_device *dev, struct ndis_offload *caps) | |
545 | { | |
546 | u32 caps_len = sizeof(*caps); | |
547 | int ret; | |
548 | ||
549 | memset(caps, 0, sizeof(*caps)); | |
550 | ||
551 | ret = rndis_filter_query_device(dev, | |
552 | OID_TCP_OFFLOAD_HARDWARE_CAPABILITIES, | |
553 | caps, &caps_len); | |
554 | if (ret) | |
555 | return ret; | |
556 | ||
557 | if (caps->header.type != NDIS_OBJECT_TYPE_OFFLOAD) { | |
558 | netdev_warn(dev->ndev, "invalid NDIS objtype %#x\n", | |
559 | caps->header.type); | |
560 | return -EINVAL; | |
561 | } | |
562 | ||
563 | if (caps->header.revision < NDIS_OFFLOAD_PARAMETERS_REVISION_1) { | |
564 | netdev_warn(dev->ndev, "invalid NDIS objrev %x\n", | |
565 | caps->header.revision); | |
566 | return -EINVAL; | |
567 | } | |
568 | ||
569 | if (caps->header.size > caps_len || | |
570 | caps->header.size < NDIS_OFFLOAD_SIZE_6_0) { | |
571 | netdev_warn(dev->ndev, | |
572 | "invalid NDIS objsize %u, data size %u\n", | |
573 | caps->header.size, caps_len); | |
574 | return -EINVAL; | |
575 | } | |
576 | ||
577 | return 0; | |
578 | } | |
579 | ||
9c26aa0d | 580 | static int rndis_filter_query_device_mac(struct rndis_device *dev) |
fceaf24a | 581 | { |
9f8bd8ba | 582 | u32 size = ETH_ALEN; |
fceaf24a | 583 | |
9c26aa0d | 584 | return rndis_filter_query_device(dev, |
0120ee0d | 585 | RNDIS_OID_802_3_PERMANENT_ADDRESS, |
c2a4efdd | 586 | dev->hw_mac_adr, &size); |
fceaf24a HJ |
587 | } |
588 | ||
1ce09e89 HZ |
589 | #define NWADR_STR "NetworkAddress" |
590 | #define NWADR_STRLEN 14 | |
591 | ||
e834da9a | 592 | int rndis_filter_set_device_mac(struct net_device *ndev, char *mac) |
1ce09e89 | 593 | { |
2625466d | 594 | struct netvsc_device *nvdev = net_device_to_netvsc_device(ndev); |
1ce09e89 | 595 | struct rndis_device *rdev = nvdev->extension; |
1ce09e89 HZ |
596 | struct rndis_request *request; |
597 | struct rndis_set_request *set; | |
598 | struct rndis_config_parameter_info *cpi; | |
599 | wchar_t *cfg_nwadr, *cfg_mac; | |
600 | struct rndis_set_complete *set_complete; | |
601 | char macstr[2*ETH_ALEN+1]; | |
602 | u32 extlen = sizeof(struct rndis_config_parameter_info) + | |
603 | 2*NWADR_STRLEN + 4*ETH_ALEN; | |
999028cc | 604 | int ret; |
1ce09e89 HZ |
605 | |
606 | request = get_rndis_request(rdev, RNDIS_MSG_SET, | |
607 | RNDIS_MESSAGE_SIZE(struct rndis_set_request) + extlen); | |
608 | if (!request) | |
609 | return -ENOMEM; | |
610 | ||
611 | set = &request->request_msg.msg.set_req; | |
612 | set->oid = RNDIS_OID_GEN_RNDIS_CONFIG_PARAMETER; | |
613 | set->info_buflen = extlen; | |
614 | set->info_buf_offset = sizeof(struct rndis_set_request); | |
615 | set->dev_vc_handle = 0; | |
616 | ||
617 | cpi = (struct rndis_config_parameter_info *)((ulong)set + | |
618 | set->info_buf_offset); | |
619 | cpi->parameter_name_offset = | |
620 | sizeof(struct rndis_config_parameter_info); | |
621 | /* Multiply by 2 because host needs 2 bytes (utf16) for each char */ | |
622 | cpi->parameter_name_length = 2*NWADR_STRLEN; | |
623 | cpi->parameter_type = RNDIS_CONFIG_PARAM_TYPE_STRING; | |
624 | cpi->parameter_value_offset = | |
625 | cpi->parameter_name_offset + cpi->parameter_name_length; | |
626 | /* Multiply by 4 because each MAC byte displayed as 2 utf16 chars */ | |
627 | cpi->parameter_value_length = 4*ETH_ALEN; | |
628 | ||
629 | cfg_nwadr = (wchar_t *)((ulong)cpi + cpi->parameter_name_offset); | |
630 | cfg_mac = (wchar_t *)((ulong)cpi + cpi->parameter_value_offset); | |
631 | ret = utf8s_to_utf16s(NWADR_STR, NWADR_STRLEN, UTF16_HOST_ENDIAN, | |
632 | cfg_nwadr, NWADR_STRLEN); | |
633 | if (ret < 0) | |
634 | goto cleanup; | |
635 | snprintf(macstr, 2*ETH_ALEN+1, "%pm", mac); | |
636 | ret = utf8s_to_utf16s(macstr, 2*ETH_ALEN, UTF16_HOST_ENDIAN, | |
637 | cfg_mac, 2*ETH_ALEN); | |
638 | if (ret < 0) | |
639 | goto cleanup; | |
640 | ||
641 | ret = rndis_filter_send_request(rdev, request); | |
642 | if (ret != 0) | |
643 | goto cleanup; | |
644 | ||
5362855a VK |
645 | wait_for_completion(&request->wait_event); |
646 | ||
647 | set_complete = &request->response_msg.msg.set_complete; | |
648 | if (set_complete->status != RNDIS_STATUS_SUCCESS) { | |
649 | netdev_err(ndev, "Fail to set MAC on host side:0x%x\n", | |
650 | set_complete->status); | |
651 | ret = -EINVAL; | |
1ce09e89 HZ |
652 | } |
653 | ||
654 | cleanup: | |
655 | put_rndis_request(rdev, request); | |
656 | return ret; | |
657 | } | |
658 | ||
da19fcd0 | 659 | static int |
426d9541 | 660 | rndis_filter_set_offload_params(struct net_device *ndev, |
4a0e70ae KS |
661 | struct ndis_offload_params *req_offloads) |
662 | { | |
2625466d | 663 | struct netvsc_device *nvdev = net_device_to_netvsc_device(ndev); |
4a0e70ae | 664 | struct rndis_device *rdev = nvdev->extension; |
4a0e70ae KS |
665 | struct rndis_request *request; |
666 | struct rndis_set_request *set; | |
667 | struct ndis_offload_params *offload_params; | |
668 | struct rndis_set_complete *set_complete; | |
669 | u32 extlen = sizeof(struct ndis_offload_params); | |
999028cc | 670 | int ret; |
af9893a3 KS |
671 | u32 vsp_version = nvdev->nvsp_version; |
672 | ||
673 | if (vsp_version <= NVSP_PROTOCOL_VERSION_4) { | |
674 | extlen = VERSION_4_OFFLOAD_SIZE; | |
675 | /* On NVSP_PROTOCOL_VERSION_4 and below, we do not support | |
676 | * UDP checksum offload. | |
677 | */ | |
678 | req_offloads->udp_ip_v4_csum = 0; | |
679 | req_offloads->udp_ip_v6_csum = 0; | |
680 | } | |
4a0e70ae KS |
681 | |
682 | request = get_rndis_request(rdev, RNDIS_MSG_SET, | |
683 | RNDIS_MESSAGE_SIZE(struct rndis_set_request) + extlen); | |
684 | if (!request) | |
685 | return -ENOMEM; | |
686 | ||
687 | set = &request->request_msg.msg.set_req; | |
688 | set->oid = OID_TCP_OFFLOAD_PARAMETERS; | |
689 | set->info_buflen = extlen; | |
690 | set->info_buf_offset = sizeof(struct rndis_set_request); | |
691 | set->dev_vc_handle = 0; | |
692 | ||
693 | offload_params = (struct ndis_offload_params *)((ulong)set + | |
694 | set->info_buf_offset); | |
695 | *offload_params = *req_offloads; | |
696 | offload_params->header.type = NDIS_OBJECT_TYPE_DEFAULT; | |
697 | offload_params->header.revision = NDIS_OFFLOAD_PARAMETERS_REVISION_3; | |
698 | offload_params->header.size = extlen; | |
699 | ||
700 | ret = rndis_filter_send_request(rdev, request); | |
701 | if (ret != 0) | |
702 | goto cleanup; | |
703 | ||
5362855a VK |
704 | wait_for_completion(&request->wait_event); |
705 | set_complete = &request->response_msg.msg.set_complete; | |
706 | if (set_complete->status != RNDIS_STATUS_SUCCESS) { | |
707 | netdev_err(ndev, "Fail to set offload on host side:0x%x\n", | |
708 | set_complete->status); | |
709 | ret = -EINVAL; | |
4a0e70ae KS |
710 | } |
711 | ||
712 | cleanup: | |
713 | put_rndis_request(rdev, request); | |
714 | return ret; | |
715 | } | |
1ce09e89 | 716 | |
962f3fee | 717 | int rndis_filter_set_rss_param(struct rndis_device *rdev, |
718 | const u8 *rss_key, int num_queue) | |
5b54dac8 | 719 | { |
3d541ac5 | 720 | struct net_device *ndev = rdev->ndev; |
5b54dac8 HZ |
721 | struct rndis_request *request; |
722 | struct rndis_set_request *set; | |
723 | struct rndis_set_complete *set_complete; | |
724 | u32 extlen = sizeof(struct ndis_recv_scale_param) + | |
962f3fee | 725 | 4 * ITAB_NUM + NETVSC_HASH_KEYLEN; |
5b54dac8 HZ |
726 | struct ndis_recv_scale_param *rssp; |
727 | u32 *itab; | |
728 | u8 *keyp; | |
999028cc | 729 | int i, ret; |
5b54dac8 HZ |
730 | |
731 | request = get_rndis_request( | |
732 | rdev, RNDIS_MSG_SET, | |
733 | RNDIS_MESSAGE_SIZE(struct rndis_set_request) + extlen); | |
734 | if (!request) | |
735 | return -ENOMEM; | |
736 | ||
737 | set = &request->request_msg.msg.set_req; | |
738 | set->oid = OID_GEN_RECEIVE_SCALE_PARAMETERS; | |
739 | set->info_buflen = extlen; | |
740 | set->info_buf_offset = sizeof(struct rndis_set_request); | |
741 | set->dev_vc_handle = 0; | |
742 | ||
743 | rssp = (struct ndis_recv_scale_param *)(set + 1); | |
744 | rssp->hdr.type = NDIS_OBJECT_TYPE_RSS_PARAMETERS; | |
745 | rssp->hdr.rev = NDIS_RECEIVE_SCALE_PARAMETERS_REVISION_2; | |
746 | rssp->hdr.size = sizeof(struct ndis_recv_scale_param); | |
747 | rssp->flag = 0; | |
748 | rssp->hashinfo = NDIS_HASH_FUNC_TOEPLITZ | NDIS_HASH_IPV4 | | |
4c87454a HZ |
749 | NDIS_HASH_TCP_IPV4 | NDIS_HASH_IPV6 | |
750 | NDIS_HASH_TCP_IPV6; | |
5b54dac8 HZ |
751 | rssp->indirect_tabsize = 4*ITAB_NUM; |
752 | rssp->indirect_taboffset = sizeof(struct ndis_recv_scale_param); | |
962f3fee | 753 | rssp->hashkey_size = NETVSC_HASH_KEYLEN; |
5b54dac8 HZ |
754 | rssp->kashkey_offset = rssp->indirect_taboffset + |
755 | rssp->indirect_tabsize; | |
756 | ||
757 | /* Set indirection table entries */ | |
758 | itab = (u32 *)(rssp + 1); | |
759 | for (i = 0; i < ITAB_NUM; i++) | |
ff4a4419 | 760 | itab[i] = rdev->ind_table[i]; |
5b54dac8 HZ |
761 | |
762 | /* Set hask key values */ | |
763 | keyp = (u8 *)((unsigned long)rssp + rssp->kashkey_offset); | |
962f3fee | 764 | memcpy(keyp, rss_key, NETVSC_HASH_KEYLEN); |
5b54dac8 | 765 | |
5b54dac8 HZ |
766 | ret = rndis_filter_send_request(rdev, request); |
767 | if (ret != 0) | |
768 | goto cleanup; | |
769 | ||
5362855a VK |
770 | wait_for_completion(&request->wait_event); |
771 | set_complete = &request->response_msg.msg.set_complete; | |
962f3fee | 772 | if (set_complete->status == RNDIS_STATUS_SUCCESS) |
773 | memcpy(rdev->rss_key, rss_key, NETVSC_HASH_KEYLEN); | |
774 | else { | |
5362855a VK |
775 | netdev_err(ndev, "Fail to set RSS parameters:0x%x\n", |
776 | set_complete->status); | |
777 | ret = -EINVAL; | |
5b54dac8 HZ |
778 | } |
779 | ||
780 | cleanup: | |
781 | put_rndis_request(rdev, request); | |
782 | return ret; | |
783 | } | |
784 | ||
9c26aa0d | 785 | static int rndis_filter_query_device_link_status(struct rndis_device *dev) |
fceaf24a | 786 | { |
0120ee0d | 787 | u32 size = sizeof(u32); |
6f27457b S |
788 | u32 link_status; |
789 | int ret; | |
fceaf24a | 790 | |
6f27457b | 791 | ret = rndis_filter_query_device(dev, |
0120ee0d | 792 | RNDIS_OID_GEN_MEDIA_CONNECT_STATUS, |
6f27457b | 793 | &link_status, &size); |
6f27457b S |
794 | |
795 | return ret; | |
fceaf24a HJ |
796 | } |
797 | ||
b37879e6 HZ |
798 | static int rndis_filter_query_link_speed(struct rndis_device *dev) |
799 | { | |
800 | u32 size = sizeof(u32); | |
801 | u32 link_speed; | |
802 | struct net_device_context *ndc; | |
803 | int ret; | |
804 | ||
805 | ret = rndis_filter_query_device(dev, RNDIS_OID_GEN_LINK_SPEED, | |
806 | &link_speed, &size); | |
807 | ||
808 | if (!ret) { | |
809 | ndc = netdev_priv(dev->ndev); | |
810 | ||
811 | /* The link speed reported from host is in 100bps unit, so | |
812 | * we convert it to Mbps here. | |
813 | */ | |
814 | ndc->speed = link_speed / 10000; | |
815 | } | |
816 | ||
817 | return ret; | |
818 | } | |
819 | ||
4f19c0d8 | 820 | static int rndis_filter_set_packet_filter(struct rndis_device *dev, |
821 | u32 new_filter) | |
fceaf24a | 822 | { |
e681b954 | 823 | struct rndis_request *request; |
9f33d054 | 824 | struct rndis_set_request *set; |
999028cc | 825 | int ret; |
fceaf24a | 826 | |
51491167 | 827 | request = get_rndis_request(dev, RNDIS_MSG_SET, |
0120ee0d GKH |
828 | RNDIS_MESSAGE_SIZE(struct rndis_set_request) + |
829 | sizeof(u32)); | |
ce12b810 | 830 | if (!request) |
831 | return -ENOMEM; | |
832 | ||
fceaf24a | 833 | |
454f18a9 | 834 | /* Setup the rndis set */ |
a388eb17 HZ |
835 | set = &request->request_msg.msg.set_req; |
836 | set->oid = RNDIS_OID_GEN_CURRENT_PACKET_FILTER; | |
837 | set->info_buflen = sizeof(u32); | |
838 | set->info_buf_offset = sizeof(struct rndis_set_request); | |
fceaf24a | 839 | |
0120ee0d | 840 | memcpy((void *)(unsigned long)set + sizeof(struct rndis_set_request), |
c2a4efdd | 841 | &new_filter, sizeof(u32)); |
fceaf24a | 842 | |
9c26aa0d | 843 | ret = rndis_filter_send_request(dev, request); |
ce12b810 | 844 | if (ret == 0) |
845 | wait_for_completion(&request->wait_event); | |
fceaf24a | 846 | |
ce12b810 | 847 | put_rndis_request(dev, request); |
98d79690 | 848 | |
fceaf24a HJ |
849 | return ret; |
850 | } | |
851 | ||
4f19c0d8 | 852 | static void rndis_set_multicast(struct work_struct *w) |
853 | { | |
854 | struct rndis_device *rdev | |
855 | = container_of(w, struct rndis_device, mcast_work); | |
856 | ||
857 | if (rdev->ndev->flags & IFF_PROMISC) | |
858 | rndis_filter_set_packet_filter(rdev, | |
859 | NDIS_PACKET_TYPE_PROMISCUOUS); | |
860 | else | |
861 | rndis_filter_set_packet_filter(rdev, | |
862 | NDIS_PACKET_TYPE_BROADCAST | | |
863 | NDIS_PACKET_TYPE_ALL_MULTICAST | | |
864 | NDIS_PACKET_TYPE_DIRECTED); | |
865 | } | |
866 | ||
867 | void rndis_filter_update(struct netvsc_device *nvdev) | |
868 | { | |
869 | struct rndis_device *rdev = nvdev->extension; | |
870 | ||
871 | schedule_work(&rdev->mcast_work); | |
872 | } | |
873 | ||
9c26aa0d | 874 | static int rndis_filter_init_device(struct rndis_device *dev) |
fceaf24a | 875 | { |
e681b954 | 876 | struct rndis_request *request; |
9f33d054 | 877 | struct rndis_initialize_request *init; |
c2a4efdd | 878 | struct rndis_initialize_complete *init_complete; |
4d643114 | 879 | u32 status; |
999028cc | 880 | int ret; |
2625466d | 881 | struct netvsc_device *nvdev = net_device_to_netvsc_device(dev->ndev); |
fceaf24a | 882 | |
51491167 | 883 | request = get_rndis_request(dev, RNDIS_MSG_INIT, |
0120ee0d GKH |
884 | RNDIS_MESSAGE_SIZE(struct rndis_initialize_request)); |
885 | if (!request) { | |
bc49b926 | 886 | ret = -ENOMEM; |
1c627870 | 887 | goto cleanup; |
fceaf24a HJ |
888 | } |
889 | ||
454f18a9 | 890 | /* Setup the rndis set */ |
a388eb17 HZ |
891 | init = &request->request_msg.msg.init_req; |
892 | init->major_ver = RNDIS_MAJOR_VERSION; | |
893 | init->minor_ver = RNDIS_MINOR_VERSION; | |
fb1d074e | 894 | init->max_xfer_size = 0x4000; |
fceaf24a | 895 | |
c2a4efdd | 896 | dev->state = RNDIS_DEV_INITIALIZING; |
fceaf24a | 897 | |
9c26aa0d | 898 | ret = rndis_filter_send_request(dev, request); |
0120ee0d | 899 | if (ret != 0) { |
c2a4efdd | 900 | dev->state = RNDIS_DEV_UNINITIALIZED; |
1c627870 | 901 | goto cleanup; |
fceaf24a HJ |
902 | } |
903 | ||
5362855a | 904 | wait_for_completion(&request->wait_event); |
fceaf24a | 905 | |
a388eb17 HZ |
906 | init_complete = &request->response_msg.msg.init_complete; |
907 | status = init_complete->status; | |
0120ee0d | 908 | if (status == RNDIS_STATUS_SUCCESS) { |
c2a4efdd | 909 | dev->state = RNDIS_DEV_INITIALIZED; |
7c3877f2 HZ |
910 | nvdev->max_pkt = init_complete->max_pkt_per_msg; |
911 | nvdev->pkt_align = 1 << init_complete->pkt_alignment_factor; | |
fceaf24a | 912 | ret = 0; |
0120ee0d | 913 | } else { |
c2a4efdd | 914 | dev->state = RNDIS_DEV_UNINITIALIZED; |
bc49b926 | 915 | ret = -EINVAL; |
fceaf24a HJ |
916 | } |
917 | ||
1c627870 | 918 | cleanup: |
fceaf24a | 919 | if (request) |
9c26aa0d | 920 | put_rndis_request(dev, request); |
fceaf24a HJ |
921 | |
922 | return ret; | |
923 | } | |
924 | ||
46b4f7f5 | 925 | static bool netvsc_device_idle(const struct netvsc_device *nvdev) |
926 | { | |
927 | int i; | |
928 | ||
929 | if (atomic_read(&nvdev->num_outstanding_recvs) > 0) | |
930 | return false; | |
931 | ||
932 | for (i = 0; i < nvdev->num_chn; i++) { | |
933 | const struct netvsc_channel *nvchan = &nvdev->chan_table[i]; | |
934 | ||
935 | if (atomic_read(&nvchan->queue_sends) > 0) | |
936 | return false; | |
937 | } | |
938 | ||
939 | return true; | |
940 | } | |
941 | ||
9c26aa0d | 942 | static void rndis_filter_halt_device(struct rndis_device *dev) |
fceaf24a | 943 | { |
e681b954 | 944 | struct rndis_request *request; |
9f33d054 | 945 | struct rndis_halt_request *halt; |
3d541ac5 VK |
946 | struct net_device_context *net_device_ctx = netdev_priv(dev->ndev); |
947 | struct netvsc_device *nvdev = net_device_ctx->nvdev; | |
fceaf24a | 948 | |
454f18a9 | 949 | /* Attempt to do a rndis device halt */ |
51491167 | 950 | request = get_rndis_request(dev, RNDIS_MSG_HALT, |
0120ee0d | 951 | RNDIS_MESSAGE_SIZE(struct rndis_halt_request)); |
fceaf24a | 952 | if (!request) |
1c627870 | 953 | goto cleanup; |
fceaf24a | 954 | |
454f18a9 | 955 | /* Setup the rndis set */ |
a388eb17 HZ |
956 | halt = &request->request_msg.msg.halt_req; |
957 | halt->req_id = atomic_inc_return(&dev->new_req_id); | |
fceaf24a | 958 | |
454f18a9 | 959 | /* Ignore return since this msg is optional. */ |
9c26aa0d | 960 | rndis_filter_send_request(dev, request); |
fceaf24a | 961 | |
c2a4efdd | 962 | dev->state = RNDIS_DEV_UNINITIALIZED; |
fceaf24a | 963 | |
1c627870 | 964 | cleanup: |
ae9e63bb | 965 | nvdev->destroy = true; |
00ecfb3b | 966 | |
967 | /* Force flag to be ordered before waiting */ | |
968 | wmb(); | |
ae9e63bb HZ |
969 | |
970 | /* Wait for all send completions */ | |
46b4f7f5 | 971 | wait_event(nvdev->wait_drain, netvsc_device_idle(nvdev)); |
ae9e63bb | 972 | |
fceaf24a | 973 | if (request) |
9c26aa0d | 974 | put_rndis_request(dev, request); |
fceaf24a HJ |
975 | } |
976 | ||
9c26aa0d | 977 | static int rndis_filter_open_device(struct rndis_device *dev) |
fceaf24a | 978 | { |
0120ee0d | 979 | int ret; |
fceaf24a | 980 | |
c2a4efdd | 981 | if (dev->state != RNDIS_DEV_INITIALIZED) |
fceaf24a HJ |
982 | return 0; |
983 | ||
9c26aa0d | 984 | ret = rndis_filter_set_packet_filter(dev, |
0120ee0d | 985 | NDIS_PACKET_TYPE_BROADCAST | |
95beae90 | 986 | NDIS_PACKET_TYPE_ALL_MULTICAST | |
0120ee0d | 987 | NDIS_PACKET_TYPE_DIRECTED); |
fceaf24a | 988 | if (ret == 0) |
c2a4efdd | 989 | dev->state = RNDIS_DEV_DATAINITIALIZED; |
fceaf24a | 990 | |
fceaf24a HJ |
991 | return ret; |
992 | } | |
993 | ||
9c26aa0d | 994 | static int rndis_filter_close_device(struct rndis_device *dev) |
fceaf24a HJ |
995 | { |
996 | int ret; | |
997 | ||
c2a4efdd | 998 | if (dev->state != RNDIS_DEV_DATAINITIALIZED) |
fceaf24a HJ |
999 | return 0; |
1000 | ||
4f19c0d8 | 1001 | /* Make sure rndis_set_multicast doesn't re-enable filter! */ |
1002 | cancel_work_sync(&dev->mcast_work); | |
1003 | ||
9c26aa0d | 1004 | ret = rndis_filter_set_packet_filter(dev, 0); |
c3582a2c HZ |
1005 | if (ret == -ENODEV) |
1006 | ret = 0; | |
1007 | ||
fceaf24a | 1008 | if (ret == 0) |
c2a4efdd | 1009 | dev->state = RNDIS_DEV_INITIALIZED; |
fceaf24a | 1010 | |
fceaf24a HJ |
1011 | return ret; |
1012 | } | |
1013 | ||
5b54dac8 HZ |
1014 | static void netvsc_sc_open(struct vmbus_channel *new_sc) |
1015 | { | |
3d541ac5 VK |
1016 | struct net_device *ndev = |
1017 | hv_get_drvdata(new_sc->primary_channel->device_obj); | |
2625466d | 1018 | struct netvsc_device *nvscdev = net_device_to_netvsc_device(ndev); |
5b54dac8 | 1019 | u16 chn_index = new_sc->offermsg.offer.sub_channel_index; |
6de38af6 | 1020 | struct netvsc_channel *nvchan; |
6de38af6 | 1021 | int ret; |
5b54dac8 | 1022 | |
5b54dac8 HZ |
1023 | if (chn_index >= nvscdev->num_chn) |
1024 | return; | |
1025 | ||
6de38af6 | 1026 | nvchan = nvscdev->chan_table + chn_index; |
1027 | nvchan->mrc.buf | |
b8b835a8 | 1028 | = vzalloc(NETVSC_RECVSLOT_MAX * sizeof(struct recv_comp_data)); |
c0b558e5 | 1029 | |
6de38af6 | 1030 | if (!nvchan->mrc.buf) |
1031 | return; | |
1032 | ||
b1dd90ce S |
1033 | /* Because the device uses NAPI, all the interrupt batching and |
1034 | * control is done via Net softirq, not the channel handling | |
1035 | */ | |
1036 | set_channel_read_mode(new_sc, HV_CALL_ISR); | |
1037 | ||
bffb1842 S |
1038 | /* Set the channel before opening.*/ |
1039 | nvchan->channel = new_sc; | |
76bb5db5 | 1040 | netif_napi_add(ndev, &nvchan->napi, |
1041 | netvsc_poll, NAPI_POLL_WEIGHT); | |
bffb1842 | 1042 | |
5b54dac8 HZ |
1043 | ret = vmbus_open(new_sc, nvscdev->ring_size * PAGE_SIZE, |
1044 | nvscdev->ring_size * PAGE_SIZE, NULL, 0, | |
6de38af6 | 1045 | netvsc_channel_cb, nvchan); |
76bb5db5 | 1046 | if (ret == 0) |
1047 | napi_enable(&nvchan->napi); | |
1048 | else | |
2be0f264 | 1049 | netif_napi_del(&nvchan->napi); |
15a863bf | 1050 | |
732e4985 | 1051 | atomic_inc(&nvscdev->open_chn); |
1052 | wake_up(&nvscdev->subchan_open); | |
5b54dac8 HZ |
1053 | } |
1054 | ||
bdbad576 | 1055 | int rndis_filter_device_add(struct hv_device *dev, |
2c7f83ca | 1056 | struct netvsc_device_info *device_info) |
fceaf24a | 1057 | { |
3d541ac5 VK |
1058 | struct net_device *net = hv_get_drvdata(dev); |
1059 | struct net_device_context *net_device_ctx = netdev_priv(net); | |
86c921af | 1060 | struct netvsc_device *net_device; |
b13cc345 | 1061 | struct rndis_device *rndis_device; |
23312a3b | 1062 | struct ndis_offload hwcaps; |
4a0e70ae | 1063 | struct ndis_offload_params offloads; |
5b54dac8 | 1064 | struct nvsp_message *init_packet; |
5b54dac8 HZ |
1065 | struct ndis_recv_scale_cap rsscap; |
1066 | u32 rsscap_size = sizeof(struct ndis_recv_scale_cap); | |
23312a3b | 1067 | unsigned int gso_max_size = GSO_MAX_SIZE; |
43c7bd1f | 1068 | u32 mtu, size, num_rss_qs; |
e01ec219 KS |
1069 | const struct cpumask *node_cpu_mask; |
1070 | u32 num_possible_rss_qs; | |
ff4a4419 | 1071 | int i, ret; |
fceaf24a | 1072 | |
b13cc345 S |
1073 | rndis_device = get_rndis_device(); |
1074 | if (!rndis_device) | |
327efbae | 1075 | return -ENODEV; |
fceaf24a | 1076 | |
0120ee0d GKH |
1077 | /* |
1078 | * Let the inner driver handle this first to create the netvsc channel | |
1079 | * NOTE! Once the channel is created, we may get a receive callback | |
1080 | * (RndisFilterOnReceive()) before this call is completed | |
1081 | */ | |
2c7f83ca | 1082 | ret = netvsc_device_add(dev, device_info); |
0120ee0d | 1083 | if (ret != 0) { |
b13cc345 | 1084 | kfree(rndis_device); |
fceaf24a HJ |
1085 | return ret; |
1086 | } | |
1087 | ||
454f18a9 | 1088 | /* Initialize the rndis device */ |
3d541ac5 | 1089 | net_device = net_device_ctx->nvdev; |
59995370 | 1090 | net_device->max_chn = 1; |
5b54dac8 | 1091 | net_device->num_chn = 1; |
fceaf24a | 1092 | |
b13cc345 | 1093 | net_device->extension = rndis_device; |
3d541ac5 | 1094 | rndis_device->ndev = net; |
fceaf24a | 1095 | |
454f18a9 | 1096 | /* Send the rndis initialization message */ |
b13cc345 | 1097 | ret = rndis_filter_init_device(rndis_device); |
0120ee0d | 1098 | if (ret != 0) { |
2289f0aa | 1099 | rndis_filter_device_remove(dev, net_device); |
5243e7bd | 1100 | return ret; |
fceaf24a HJ |
1101 | } |
1102 | ||
4d3c9d37 HZ |
1103 | /* Get the MTU from the host */ |
1104 | size = sizeof(u32); | |
1105 | ret = rndis_filter_query_device(rndis_device, | |
1106 | RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE, | |
1107 | &mtu, &size); | |
0a1275ca VK |
1108 | if (ret == 0 && size == sizeof(u32) && mtu < net->mtu) |
1109 | net->mtu = mtu; | |
4d3c9d37 | 1110 | |
454f18a9 | 1111 | /* Get the mac address */ |
b13cc345 | 1112 | ret = rndis_filter_query_device_mac(rndis_device); |
0120ee0d | 1113 | if (ret != 0) { |
2289f0aa | 1114 | rndis_filter_device_remove(dev, net_device); |
5243e7bd | 1115 | return ret; |
fceaf24a HJ |
1116 | } |
1117 | ||
3c4debad | 1118 | memcpy(device_info->mac_adr, rndis_device->hw_mac_adr, ETH_ALEN); |
fceaf24a | 1119 | |
23312a3b | 1120 | /* Find HW offload capabilities */ |
1121 | ret = rndis_query_hwcaps(rndis_device, &hwcaps); | |
1122 | if (ret != 0) { | |
2289f0aa | 1123 | rndis_filter_device_remove(dev, net_device); |
23312a3b | 1124 | return ret; |
1125 | } | |
1126 | ||
1127 | /* A value of zero means "no change"; now turn on what we want. */ | |
4a0e70ae | 1128 | memset(&offloads, 0, sizeof(struct ndis_offload_params)); |
23312a3b | 1129 | |
1130 | /* Linux does not care about IP checksum, always does in kernel */ | |
1131 | offloads.ip_v4_csum = NDIS_OFFLOAD_PARAMETERS_TX_RX_DISABLED; | |
1132 | ||
1133 | /* Compute tx offload settings based on hw capabilities */ | |
1134 | net->hw_features = NETIF_F_RXCSUM; | |
1135 | ||
1136 | if ((hwcaps.csum.ip4_txcsum & NDIS_TXCSUM_ALL_TCP4) == NDIS_TXCSUM_ALL_TCP4) { | |
1137 | /* Can checksum TCP */ | |
1138 | net->hw_features |= NETIF_F_IP_CSUM; | |
1139 | net_device_ctx->tx_checksum_mask |= TRANSPORT_INFO_IPV4_TCP; | |
1140 | ||
1141 | offloads.tcp_ip_v4_csum = NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED; | |
1142 | ||
1143 | if (hwcaps.lsov2.ip4_encap & NDIS_OFFLOAD_ENCAP_8023) { | |
1144 | offloads.lso_v2_ipv4 = NDIS_OFFLOAD_PARAMETERS_LSOV2_ENABLED; | |
1145 | net->hw_features |= NETIF_F_TSO; | |
1146 | ||
1147 | if (hwcaps.lsov2.ip4_maxsz < gso_max_size) | |
1148 | gso_max_size = hwcaps.lsov2.ip4_maxsz; | |
1149 | } | |
1150 | ||
1151 | if (hwcaps.csum.ip4_txcsum & NDIS_TXCSUM_CAP_UDP4) { | |
1152 | offloads.udp_ip_v4_csum = NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED; | |
1153 | net_device_ctx->tx_checksum_mask |= TRANSPORT_INFO_IPV4_UDP; | |
1154 | } | |
1155 | } | |
1156 | ||
1157 | if ((hwcaps.csum.ip6_txcsum & NDIS_TXCSUM_ALL_TCP6) == NDIS_TXCSUM_ALL_TCP6) { | |
1158 | net->hw_features |= NETIF_F_IPV6_CSUM; | |
1159 | ||
1160 | offloads.tcp_ip_v6_csum = NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED; | |
1161 | net_device_ctx->tx_checksum_mask |= TRANSPORT_INFO_IPV6_TCP; | |
1162 | ||
1163 | if ((hwcaps.lsov2.ip6_encap & NDIS_OFFLOAD_ENCAP_8023) && | |
1164 | (hwcaps.lsov2.ip6_opts & NDIS_LSOV2_CAP_IP6) == NDIS_LSOV2_CAP_IP6) { | |
1165 | offloads.lso_v2_ipv6 = NDIS_OFFLOAD_PARAMETERS_LSOV2_ENABLED; | |
1166 | net->hw_features |= NETIF_F_TSO6; | |
1167 | ||
1168 | if (hwcaps.lsov2.ip6_maxsz < gso_max_size) | |
1169 | gso_max_size = hwcaps.lsov2.ip6_maxsz; | |
1170 | } | |
1171 | ||
1172 | if (hwcaps.csum.ip6_txcsum & NDIS_TXCSUM_CAP_UDP6) { | |
1173 | offloads.udp_ip_v6_csum = NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED; | |
1174 | net_device_ctx->tx_checksum_mask |= TRANSPORT_INFO_IPV6_UDP; | |
1175 | } | |
1176 | } | |
1177 | ||
1178 | netif_set_gso_max_size(net, gso_max_size); | |
4a0e70ae | 1179 | |
426d9541 | 1180 | ret = rndis_filter_set_offload_params(net, &offloads); |
4a0e70ae KS |
1181 | if (ret) |
1182 | goto err_dev_remv; | |
1183 | ||
b13cc345 | 1184 | rndis_filter_query_device_link_status(rndis_device); |
fceaf24a | 1185 | |
93ba2222 VK |
1186 | netdev_dbg(net, "Device MAC %pM link state %s\n", |
1187 | rndis_device->hw_mac_adr, | |
dedb459e | 1188 | rndis_device->link_state ? "down" : "up"); |
fceaf24a | 1189 | |
5b54dac8 HZ |
1190 | if (net_device->nvsp_version < NVSP_PROTOCOL_VERSION_5) |
1191 | return 0; | |
1192 | ||
b37879e6 HZ |
1193 | rndis_filter_query_link_speed(rndis_device); |
1194 | ||
5b54dac8 HZ |
1195 | /* vRSS setup */ |
1196 | memset(&rsscap, 0, rsscap_size); | |
1197 | ret = rndis_filter_query_device(rndis_device, | |
1198 | OID_GEN_RECEIVE_SCALE_CAPABILITIES, | |
1199 | &rsscap, &rsscap_size); | |
1200 | if (ret || rsscap.num_recv_que < 2) | |
1201 | goto out; | |
1202 | ||
e01ec219 KS |
1203 | /* |
1204 | * We will limit the VRSS channels to the number CPUs in the NUMA node | |
1205 | * the primary channel is currently bound to. | |
3071ada4 | 1206 | * |
1207 | * This also guarantees that num_possible_rss_qs <= num_online_cpus | |
e01ec219 KS |
1208 | */ |
1209 | node_cpu_mask = cpumask_of_node(cpu_to_node(dev->channel->target_cpu)); | |
3071ada4 | 1210 | num_possible_rss_qs = min_t(u32, cpumask_weight(node_cpu_mask), |
1211 | rsscap.num_recv_que); | |
8ebdcc52 | 1212 | |
3071ada4 | 1213 | net_device->max_chn = min_t(u32, VRSS_CHANNEL_MAX, num_possible_rss_qs); |
e01ec219 | 1214 | |
3071ada4 | 1215 | /* We will use the given number of channels if available. */ |
1216 | net_device->num_chn = min(net_device->max_chn, device_info->num_chn); | |
ff4a4419 | 1217 | |
1218 | for (i = 0; i < ITAB_NUM; i++) | |
1219 | rndis_device->ind_table[i] = ethtool_rxfh_indir_default(i, | |
1220 | net_device->num_chn); | |
1221 | ||
732e4985 | 1222 | atomic_set(&net_device->open_chn, 1); |
3071ada4 | 1223 | num_rss_qs = net_device->num_chn - 1; |
1224 | if (num_rss_qs == 0) | |
1225 | return 0; | |
5b54dac8 | 1226 | |
5b54dac8 HZ |
1227 | vmbus_set_sc_create_callback(dev->channel, netvsc_sc_open); |
1228 | ||
1229 | init_packet = &net_device->channel_init_pkt; | |
1230 | memset(init_packet, 0, sizeof(struct nvsp_message)); | |
1231 | init_packet->hdr.msg_type = NVSP_MSG5_TYPE_SUBCHANNEL; | |
1232 | init_packet->msg.v5_msg.subchn_req.op = NVSP_SUBCHANNEL_ALLOCATE; | |
1233 | init_packet->msg.v5_msg.subchn_req.num_subchannels = | |
1234 | net_device->num_chn - 1; | |
1235 | ret = vmbus_sendpacket(dev->channel, init_packet, | |
1236 | sizeof(struct nvsp_message), | |
1237 | (unsigned long)init_packet, | |
1238 | VM_PKT_DATA_INBAND, | |
1239 | VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED); | |
1240 | if (ret) | |
1241 | goto out; | |
5362855a | 1242 | |
732e4985 | 1243 | wait_for_completion(&net_device->channel_init_wait); |
43c7bd1f | 1244 | if (init_packet->msg.v5_msg.subchn_comp.status != NVSP_STAT_SUCCESS) { |
5b54dac8 HZ |
1245 | ret = -ENODEV; |
1246 | goto out; | |
1247 | } | |
43c7bd1f | 1248 | |
5b54dac8 HZ |
1249 | net_device->num_chn = 1 + |
1250 | init_packet->msg.v5_msg.subchn_comp.num_subchannels; | |
1251 | ||
732e4985 | 1252 | /* wait for all sub channels to open */ |
1253 | wait_event(net_device->subchan_open, | |
1254 | atomic_read(&net_device->open_chn) == net_device->num_chn); | |
1255 | ||
43c7bd1f | 1256 | /* ignore failues from setting rss parameters, still have channels */ |
1257 | rndis_filter_set_rss_param(rndis_device, netvsc_hash_key, | |
1258 | net_device->num_chn); | |
5b54dac8 | 1259 | out: |
59995370 AS |
1260 | if (ret) { |
1261 | net_device->max_chn = 1; | |
5b54dac8 | 1262 | net_device->num_chn = 1; |
59995370 | 1263 | } |
b3e6b82a | 1264 | |
5b54dac8 | 1265 | return 0; /* return 0 because primary channel can be used alone */ |
4a0e70ae KS |
1266 | |
1267 | err_dev_remv: | |
2289f0aa | 1268 | rndis_filter_device_remove(dev, net_device); |
4a0e70ae | 1269 | return ret; |
fceaf24a HJ |
1270 | } |
1271 | ||
2289f0aa | 1272 | void rndis_filter_device_remove(struct hv_device *dev, |
1273 | struct netvsc_device *net_dev) | |
fceaf24a | 1274 | { |
53d21fdb | 1275 | struct rndis_device *rndis_dev = net_dev->extension; |
d66ab514 | 1276 | |
454f18a9 | 1277 | /* Halt and release the rndis device */ |
9c26aa0d | 1278 | rndis_filter_halt_device(rndis_dev); |
fceaf24a | 1279 | |
c2a4efdd | 1280 | kfree(rndis_dev); |
53d21fdb | 1281 | net_dev->extension = NULL; |
fceaf24a | 1282 | |
3fae5c8f | 1283 | netvsc_device_remove(dev); |
fceaf24a HJ |
1284 | } |
1285 | ||
2f5fa6c8 | 1286 | int rndis_filter_open(struct netvsc_device *nvdev) |
fceaf24a | 1287 | { |
2f5fa6c8 | 1288 | if (!nvdev) |
8a62d716 BP |
1289 | return -EINVAL; |
1290 | ||
2f5fa6c8 | 1291 | if (atomic_inc_return(&nvdev->open_cnt) != 1) |
84bf9cef KS |
1292 | return 0; |
1293 | ||
2f5fa6c8 | 1294 | return rndis_filter_open_device(nvdev->extension); |
fceaf24a HJ |
1295 | } |
1296 | ||
2f5fa6c8 | 1297 | int rndis_filter_close(struct netvsc_device *nvdev) |
fceaf24a | 1298 | { |
5fccab3b | 1299 | if (!nvdev) |
8a62d716 BP |
1300 | return -EINVAL; |
1301 | ||
84bf9cef KS |
1302 | if (atomic_dec_return(&nvdev->open_cnt) != 0) |
1303 | return 0; | |
1304 | ||
5fccab3b | 1305 | return rndis_filter_close_device(nvdev->extension); |
fceaf24a | 1306 | } |