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Commit | Line | Data |
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7e27f18c | 1 | /* |
1da177e4 | 2 | * RNDIS MSG parser |
7e27f18c | 3 | * |
1da177e4 | 4 | * Authors: Benedikt Spranger, Pengutronix |
7e27f18c DB |
5 | * Robert Schwebel, Pengutronix |
6 | * | |
1da177e4 LT |
7 | * This program is free software; you can redistribute it and/or |
8 | * modify it under the terms of the GNU General Public License | |
7e27f18c DB |
9 | * version 2, as published by the Free Software Foundation. |
10 | * | |
1da177e4 LT |
11 | * This software was originally developed in conformance with |
12 | * Microsoft's Remote NDIS Specification License Agreement. | |
7e27f18c | 13 | * |
1da177e4 LT |
14 | * 03/12/2004 Kai-Uwe Bloem <linux-development@auerswald.de> |
15 | * Fixed message length bug in init_response | |
7e27f18c | 16 | * |
1da177e4 | 17 | * 03/25/2004 Kai-Uwe Bloem <linux-development@auerswald.de> |
7e27f18c | 18 | * Fixed rndis_rm_hdr length bug. |
1da177e4 LT |
19 | * |
20 | * Copyright (C) 2004 by David Brownell | |
21 | * updates to merge with Linux 2.6, better match RNDIS spec | |
22 | */ | |
23 | ||
1da177e4 LT |
24 | #include <linux/module.h> |
25 | #include <linux/moduleparam.h> | |
26 | #include <linux/kernel.h> | |
27 | #include <linux/errno.h> | |
d6d22922 | 28 | #include <linux/idr.h> |
1da177e4 LT |
29 | #include <linux/list.h> |
30 | #include <linux/proc_fs.h> | |
5a0e3ad6 | 31 | #include <linux/slab.h> |
e184d5fc | 32 | #include <linux/seq_file.h> |
1da177e4 LT |
33 | #include <linux/netdevice.h> |
34 | ||
35 | #include <asm/io.h> | |
36 | #include <asm/byteorder.h> | |
6cdee106 | 37 | #include <asm/unaligned.h> |
1da177e4 | 38 | |
ae8dd0cc | 39 | #include "u_rndis.h" |
1da177e4 | 40 | |
15b2d2b5 | 41 | #undef VERBOSE_DEBUG |
1da177e4 LT |
42 | |
43 | #include "rndis.h" | |
44 | ||
45 | ||
46 | /* The driver for your USB chip needs to support ep0 OUT to work with | |
47 | * RNDIS, plus all three CDC Ethernet endpoints (interrupt not optional). | |
48 | * | |
49 | * Windows hosts need an INF file like Documentation/usb/linux.inf | |
50 | * and will be happier if you provide the host_addr module parameter. | |
51 | */ | |
52 | ||
53 | #if 0 | |
1da177e4 | 54 | static int rndis_debug = 0; |
340600ab | 55 | module_param (rndis_debug, int, 0); |
1da177e4 | 56 | MODULE_PARM_DESC (rndis_debug, "enable debugging"); |
1da177e4 | 57 | #else |
1da177e4 | 58 | #define rndis_debug 0 |
1da177e4 LT |
59 | #endif |
60 | ||
d6d22922 | 61 | #ifdef CONFIG_USB_GADGET_DEBUG_FILES |
1da177e4 | 62 | |
d6d22922 | 63 | #define NAME_TEMPLATE "driver/rndis-%03d" |
1da177e4 | 64 | |
d6d22922 AP |
65 | #endif /* CONFIG_USB_GADGET_DEBUG_FILES */ |
66 | ||
67 | static DEFINE_IDA(rndis_ida); | |
1da177e4 LT |
68 | |
69 | /* Driver Version */ | |
a1df4e45 | 70 | static const __le32 rndis_driver_version = cpu_to_le32(1); |
1da177e4 LT |
71 | |
72 | /* Function Prototypes */ | |
83210e59 AP |
73 | static rndis_resp_t *rndis_add_response(struct rndis_params *params, |
74 | u32 length); | |
1da177e4 | 75 | |
d6d22922 AP |
76 | #ifdef CONFIG_USB_GADGET_DEBUG_FILES |
77 | ||
78 | static const struct file_operations rndis_proc_fops; | |
79 | ||
80 | #endif /* CONFIG_USB_GADGET_DEBUG_FILES */ | |
1da177e4 | 81 | |
340600ab | 82 | /* supported OIDs */ |
97f0117b | 83 | static const u32 oid_supported_list[] = { |
340600ab | 84 | /* the general stuff */ |
8cdddc3f LW |
85 | RNDIS_OID_GEN_SUPPORTED_LIST, |
86 | RNDIS_OID_GEN_HARDWARE_STATUS, | |
87 | RNDIS_OID_GEN_MEDIA_SUPPORTED, | |
88 | RNDIS_OID_GEN_MEDIA_IN_USE, | |
89 | RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE, | |
90 | RNDIS_OID_GEN_LINK_SPEED, | |
91 | RNDIS_OID_GEN_TRANSMIT_BLOCK_SIZE, | |
92 | RNDIS_OID_GEN_RECEIVE_BLOCK_SIZE, | |
93 | RNDIS_OID_GEN_VENDOR_ID, | |
94 | RNDIS_OID_GEN_VENDOR_DESCRIPTION, | |
95 | RNDIS_OID_GEN_VENDOR_DRIVER_VERSION, | |
96 | RNDIS_OID_GEN_CURRENT_PACKET_FILTER, | |
97 | RNDIS_OID_GEN_MAXIMUM_TOTAL_SIZE, | |
98 | RNDIS_OID_GEN_MEDIA_CONNECT_STATUS, | |
99 | RNDIS_OID_GEN_PHYSICAL_MEDIUM, | |
7e27f18c | 100 | |
340600ab | 101 | /* the statistical stuff */ |
8cdddc3f LW |
102 | RNDIS_OID_GEN_XMIT_OK, |
103 | RNDIS_OID_GEN_RCV_OK, | |
104 | RNDIS_OID_GEN_XMIT_ERROR, | |
105 | RNDIS_OID_GEN_RCV_ERROR, | |
106 | RNDIS_OID_GEN_RCV_NO_BUFFER, | |
340600ab | 107 | #ifdef RNDIS_OPTIONAL_STATS |
8cdddc3f LW |
108 | RNDIS_OID_GEN_DIRECTED_BYTES_XMIT, |
109 | RNDIS_OID_GEN_DIRECTED_FRAMES_XMIT, | |
110 | RNDIS_OID_GEN_MULTICAST_BYTES_XMIT, | |
111 | RNDIS_OID_GEN_MULTICAST_FRAMES_XMIT, | |
112 | RNDIS_OID_GEN_BROADCAST_BYTES_XMIT, | |
113 | RNDIS_OID_GEN_BROADCAST_FRAMES_XMIT, | |
114 | RNDIS_OID_GEN_DIRECTED_BYTES_RCV, | |
115 | RNDIS_OID_GEN_DIRECTED_FRAMES_RCV, | |
116 | RNDIS_OID_GEN_MULTICAST_BYTES_RCV, | |
117 | RNDIS_OID_GEN_MULTICAST_FRAMES_RCV, | |
118 | RNDIS_OID_GEN_BROADCAST_BYTES_RCV, | |
119 | RNDIS_OID_GEN_BROADCAST_FRAMES_RCV, | |
120 | RNDIS_OID_GEN_RCV_CRC_ERROR, | |
121 | RNDIS_OID_GEN_TRANSMIT_QUEUE_LENGTH, | |
340600ab DB |
122 | #endif /* RNDIS_OPTIONAL_STATS */ |
123 | ||
7e27f18c | 124 | /* mandatory 802.3 */ |
340600ab | 125 | /* the general stuff */ |
8cdddc3f | 126 | RNDIS_OID_802_3_PERMANENT_ADDRESS, |
4cc6c4d5 LW |
127 | RNDIS_OID_802_3_CURRENT_ADDRESS, |
128 | RNDIS_OID_802_3_MULTICAST_LIST, | |
129 | RNDIS_OID_802_3_MAC_OPTIONS, | |
130 | RNDIS_OID_802_3_MAXIMUM_LIST_SIZE, | |
7e27f18c | 131 | |
340600ab | 132 | /* the statistical stuff */ |
4cc6c4d5 LW |
133 | RNDIS_OID_802_3_RCV_ERROR_ALIGNMENT, |
134 | RNDIS_OID_802_3_XMIT_ONE_COLLISION, | |
135 | RNDIS_OID_802_3_XMIT_MORE_COLLISIONS, | |
340600ab | 136 | #ifdef RNDIS_OPTIONAL_STATS |
4cc6c4d5 LW |
137 | RNDIS_OID_802_3_XMIT_DEFERRED, |
138 | RNDIS_OID_802_3_XMIT_MAX_COLLISIONS, | |
139 | RNDIS_OID_802_3_RCV_OVERRUN, | |
140 | RNDIS_OID_802_3_XMIT_UNDERRUN, | |
141 | RNDIS_OID_802_3_XMIT_HEARTBEAT_FAILURE, | |
142 | RNDIS_OID_802_3_XMIT_TIMES_CRS_LOST, | |
143 | RNDIS_OID_802_3_XMIT_LATE_COLLISIONS, | |
340600ab DB |
144 | #endif /* RNDIS_OPTIONAL_STATS */ |
145 | ||
146 | #ifdef RNDIS_PM | |
15b2d2b5 DB |
147 | /* PM and wakeup are "mandatory" for USB, but the RNDIS specs |
148 | * don't say what they mean ... and the NDIS specs are often | |
149 | * confusing and/or ambiguous in this context. (That is, more | |
150 | * so than their specs for the other OIDs.) | |
151 | * | |
152 | * FIXME someone who knows what these should do, please | |
153 | * implement them! | |
154 | */ | |
340600ab DB |
155 | |
156 | /* power management */ | |
157 | OID_PNP_CAPABILITIES, | |
158 | OID_PNP_QUERY_POWER, | |
159 | OID_PNP_SET_POWER, | |
160 | ||
161 | #ifdef RNDIS_WAKEUP | |
162 | /* wake up host */ | |
163 | OID_PNP_ENABLE_WAKE_UP, | |
164 | OID_PNP_ADD_WAKE_UP_PATTERN, | |
165 | OID_PNP_REMOVE_WAKE_UP_PATTERN, | |
166 | #endif /* RNDIS_WAKEUP */ | |
167 | #endif /* RNDIS_PM */ | |
168 | }; | |
169 | ||
170 | ||
1da177e4 | 171 | /* NDIS Functions */ |
83210e59 | 172 | static int gen_ndis_query_resp(struct rndis_params *params, u32 OID, u8 *buf, |
a1df4e45 | 173 | unsigned buf_len, rndis_resp_t *r) |
1da177e4 | 174 | { |
a1df4e45 MD |
175 | int retval = -ENOTSUPP; |
176 | u32 length = 4; /* usually */ | |
177 | __le32 *outbuf; | |
178 | int i, count; | |
179 | rndis_query_cmplt_type *resp; | |
180 | struct net_device *net; | |
28172739 | 181 | struct rtnl_link_stats64 temp; |
fdb93f8a | 182 | const struct rtnl_link_stats64 *stats; |
1da177e4 LT |
183 | |
184 | if (!r) return -ENOMEM; | |
a1df4e45 | 185 | resp = (rndis_query_cmplt_type *)r->buf; |
1da177e4 LT |
186 | |
187 | if (!resp) return -ENOMEM; | |
340600ab DB |
188 | |
189 | if (buf_len && rndis_debug > 1) { | |
33376c1c | 190 | pr_debug("query OID %08x value, len %d:\n", OID, buf_len); |
340600ab | 191 | for (i = 0; i < buf_len; i += 16) { |
33376c1c | 192 | pr_debug("%03d: %08x %08x %08x %08x\n", i, |
a5abdeaf HH |
193 | get_unaligned_le32(&buf[i]), |
194 | get_unaligned_le32(&buf[i + 4]), | |
195 | get_unaligned_le32(&buf[i + 8]), | |
196 | get_unaligned_le32(&buf[i + 12])); | |
340600ab DB |
197 | } |
198 | } | |
199 | ||
200 | /* response goes here, right after the header */ | |
a1df4e45 MD |
201 | outbuf = (__le32 *)&resp[1]; |
202 | resp->InformationBufferOffset = cpu_to_le32(16); | |
340600ab | 203 | |
83210e59 | 204 | net = params->dev; |
28172739 | 205 | stats = dev_get_stats(net, &temp); |
15b2d2b5 | 206 | |
1da177e4 LT |
207 | switch (OID) { |
208 | ||
209 | /* general oids (table 4-1) */ | |
210 | ||
211 | /* mandatory */ | |
8cdddc3f LW |
212 | case RNDIS_OID_GEN_SUPPORTED_LIST: |
213 | pr_debug("%s: RNDIS_OID_GEN_SUPPORTED_LIST\n", __func__); | |
a1df4e45 MD |
214 | length = sizeof(oid_supported_list); |
215 | count = length / sizeof(u32); | |
1da177e4 | 216 | for (i = 0; i < count; i++) |
a1df4e45 | 217 | outbuf[i] = cpu_to_le32(oid_supported_list[i]); |
1da177e4 LT |
218 | retval = 0; |
219 | break; | |
7e27f18c | 220 | |
1da177e4 | 221 | /* mandatory */ |
8cdddc3f LW |
222 | case RNDIS_OID_GEN_HARDWARE_STATUS: |
223 | pr_debug("%s: RNDIS_OID_GEN_HARDWARE_STATUS\n", __func__); | |
7e27f18c | 224 | /* Bogus question! |
1da177e4 | 225 | * Hardware must be ready to receive high level protocols. |
7e27f18c | 226 | * BTW: |
1da177e4 LT |
227 | * reddite ergo quae sunt Caesaris Caesari |
228 | * et quae sunt Dei Deo! | |
229 | */ | |
a1df4e45 | 230 | *outbuf = cpu_to_le32(0); |
1da177e4 LT |
231 | retval = 0; |
232 | break; | |
7e27f18c | 233 | |
1da177e4 | 234 | /* mandatory */ |
8cdddc3f LW |
235 | case RNDIS_OID_GEN_MEDIA_SUPPORTED: |
236 | pr_debug("%s: RNDIS_OID_GEN_MEDIA_SUPPORTED\n", __func__); | |
83210e59 | 237 | *outbuf = cpu_to_le32(params->medium); |
1da177e4 LT |
238 | retval = 0; |
239 | break; | |
7e27f18c | 240 | |
1da177e4 | 241 | /* mandatory */ |
8cdddc3f LW |
242 | case RNDIS_OID_GEN_MEDIA_IN_USE: |
243 | pr_debug("%s: RNDIS_OID_GEN_MEDIA_IN_USE\n", __func__); | |
1da177e4 | 244 | /* one medium, one transport... (maybe you do it better) */ |
83210e59 | 245 | *outbuf = cpu_to_le32(params->medium); |
1da177e4 LT |
246 | retval = 0; |
247 | break; | |
7e27f18c | 248 | |
1da177e4 | 249 | /* mandatory */ |
8cdddc3f LW |
250 | case RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE: |
251 | pr_debug("%s: RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE\n", __func__); | |
83210e59 AP |
252 | if (params->dev) { |
253 | *outbuf = cpu_to_le32(params->dev->mtu); | |
1da177e4 | 254 | retval = 0; |
1da177e4 LT |
255 | } |
256 | break; | |
7e27f18c | 257 | |
1da177e4 | 258 | /* mandatory */ |
8cdddc3f | 259 | case RNDIS_OID_GEN_LINK_SPEED: |
340600ab | 260 | if (rndis_debug > 1) |
8cdddc3f | 261 | pr_debug("%s: RNDIS_OID_GEN_LINK_SPEED\n", __func__); |
83210e59 | 262 | if (params->media_state == RNDIS_MEDIA_STATE_DISCONNECTED) |
a1df4e45 | 263 | *outbuf = cpu_to_le32(0); |
1da177e4 | 264 | else |
83210e59 | 265 | *outbuf = cpu_to_le32(params->speed); |
1da177e4 LT |
266 | retval = 0; |
267 | break; | |
268 | ||
269 | /* mandatory */ | |
8cdddc3f LW |
270 | case RNDIS_OID_GEN_TRANSMIT_BLOCK_SIZE: |
271 | pr_debug("%s: RNDIS_OID_GEN_TRANSMIT_BLOCK_SIZE\n", __func__); | |
83210e59 AP |
272 | if (params->dev) { |
273 | *outbuf = cpu_to_le32(params->dev->mtu); | |
1da177e4 LT |
274 | retval = 0; |
275 | } | |
276 | break; | |
7e27f18c | 277 | |
1da177e4 | 278 | /* mandatory */ |
8cdddc3f LW |
279 | case RNDIS_OID_GEN_RECEIVE_BLOCK_SIZE: |
280 | pr_debug("%s: RNDIS_OID_GEN_RECEIVE_BLOCK_SIZE\n", __func__); | |
83210e59 AP |
281 | if (params->dev) { |
282 | *outbuf = cpu_to_le32(params->dev->mtu); | |
1da177e4 LT |
283 | retval = 0; |
284 | } | |
285 | break; | |
7e27f18c | 286 | |
1da177e4 | 287 | /* mandatory */ |
8cdddc3f LW |
288 | case RNDIS_OID_GEN_VENDOR_ID: |
289 | pr_debug("%s: RNDIS_OID_GEN_VENDOR_ID\n", __func__); | |
83210e59 | 290 | *outbuf = cpu_to_le32(params->vendorID); |
1da177e4 LT |
291 | retval = 0; |
292 | break; | |
7e27f18c | 293 | |
1da177e4 | 294 | /* mandatory */ |
8cdddc3f LW |
295 | case RNDIS_OID_GEN_VENDOR_DESCRIPTION: |
296 | pr_debug("%s: RNDIS_OID_GEN_VENDOR_DESCRIPTION\n", __func__); | |
83210e59 AP |
297 | if (params->vendorDescr) { |
298 | length = strlen(params->vendorDescr); | |
299 | memcpy(outbuf, params->vendorDescr, length); | |
037d3656 MO |
300 | } else { |
301 | outbuf[0] = 0; | |
302 | } | |
1da177e4 LT |
303 | retval = 0; |
304 | break; | |
305 | ||
8cdddc3f LW |
306 | case RNDIS_OID_GEN_VENDOR_DRIVER_VERSION: |
307 | pr_debug("%s: RNDIS_OID_GEN_VENDOR_DRIVER_VERSION\n", __func__); | |
1da177e4 | 308 | /* Created as LE */ |
340600ab | 309 | *outbuf = rndis_driver_version; |
1da177e4 LT |
310 | retval = 0; |
311 | break; | |
312 | ||
313 | /* mandatory */ | |
8cdddc3f LW |
314 | case RNDIS_OID_GEN_CURRENT_PACKET_FILTER: |
315 | pr_debug("%s: RNDIS_OID_GEN_CURRENT_PACKET_FILTER\n", __func__); | |
83210e59 | 316 | *outbuf = cpu_to_le32(*params->filter); |
1da177e4 LT |
317 | retval = 0; |
318 | break; | |
319 | ||
320 | /* mandatory */ | |
8cdddc3f LW |
321 | case RNDIS_OID_GEN_MAXIMUM_TOTAL_SIZE: |
322 | pr_debug("%s: RNDIS_OID_GEN_MAXIMUM_TOTAL_SIZE\n", __func__); | |
35c26c2c | 323 | *outbuf = cpu_to_le32(RNDIS_MAX_TOTAL_SIZE); |
1da177e4 LT |
324 | retval = 0; |
325 | break; | |
326 | ||
327 | /* mandatory */ | |
8cdddc3f | 328 | case RNDIS_OID_GEN_MEDIA_CONNECT_STATUS: |
340600ab | 329 | if (rndis_debug > 1) |
8cdddc3f | 330 | pr_debug("%s: RNDIS_OID_GEN_MEDIA_CONNECT_STATUS\n", __func__); |
83210e59 | 331 | *outbuf = cpu_to_le32(params->media_state); |
1da177e4 LT |
332 | retval = 0; |
333 | break; | |
334 | ||
8cdddc3f LW |
335 | case RNDIS_OID_GEN_PHYSICAL_MEDIUM: |
336 | pr_debug("%s: RNDIS_OID_GEN_PHYSICAL_MEDIUM\n", __func__); | |
a1df4e45 | 337 | *outbuf = cpu_to_le32(0); |
1da177e4 LT |
338 | retval = 0; |
339 | break; | |
340 | ||
341 | /* The RNDIS specification is incomplete/wrong. Some versions | |
342 | * of MS-Windows expect OIDs that aren't specified there. Other | |
343 | * versions emit undefined RNDIS messages. DOCUMENT ALL THESE! | |
344 | */ | |
8cdddc3f LW |
345 | case RNDIS_OID_GEN_MAC_OPTIONS: /* from WinME */ |
346 | pr_debug("%s: RNDIS_OID_GEN_MAC_OPTIONS\n", __func__); | |
35c26c2c | 347 | *outbuf = cpu_to_le32( |
e20289ed LW |
348 | RNDIS_MAC_OPTION_RECEIVE_SERIALIZED |
349 | | RNDIS_MAC_OPTION_FULL_DUPLEX); | |
1da177e4 LT |
350 | retval = 0; |
351 | break; | |
352 | ||
353 | /* statistics OIDs (table 4-2) */ | |
354 | ||
355 | /* mandatory */ | |
8cdddc3f | 356 | case RNDIS_OID_GEN_XMIT_OK: |
340600ab | 357 | if (rndis_debug > 1) |
8cdddc3f | 358 | pr_debug("%s: RNDIS_OID_GEN_XMIT_OK\n", __func__); |
15b2d2b5 DB |
359 | if (stats) { |
360 | *outbuf = cpu_to_le32(stats->tx_packets | |
361 | - stats->tx_errors - stats->tx_dropped); | |
1da177e4 | 362 | retval = 0; |
1da177e4 LT |
363 | } |
364 | break; | |
365 | ||
366 | /* mandatory */ | |
8cdddc3f | 367 | case RNDIS_OID_GEN_RCV_OK: |
340600ab | 368 | if (rndis_debug > 1) |
8cdddc3f | 369 | pr_debug("%s: RNDIS_OID_GEN_RCV_OK\n", __func__); |
15b2d2b5 DB |
370 | if (stats) { |
371 | *outbuf = cpu_to_le32(stats->rx_packets | |
372 | - stats->rx_errors - stats->rx_dropped); | |
1da177e4 | 373 | retval = 0; |
1da177e4 LT |
374 | } |
375 | break; | |
7e27f18c | 376 | |
1da177e4 | 377 | /* mandatory */ |
8cdddc3f | 378 | case RNDIS_OID_GEN_XMIT_ERROR: |
340600ab | 379 | if (rndis_debug > 1) |
8cdddc3f | 380 | pr_debug("%s: RNDIS_OID_GEN_XMIT_ERROR\n", __func__); |
15b2d2b5 DB |
381 | if (stats) { |
382 | *outbuf = cpu_to_le32(stats->tx_errors); | |
1da177e4 | 383 | retval = 0; |
1da177e4 LT |
384 | } |
385 | break; | |
7e27f18c | 386 | |
1da177e4 | 387 | /* mandatory */ |
8cdddc3f | 388 | case RNDIS_OID_GEN_RCV_ERROR: |
340600ab | 389 | if (rndis_debug > 1) |
8cdddc3f | 390 | pr_debug("%s: RNDIS_OID_GEN_RCV_ERROR\n", __func__); |
15b2d2b5 DB |
391 | if (stats) { |
392 | *outbuf = cpu_to_le32(stats->rx_errors); | |
1da177e4 | 393 | retval = 0; |
1da177e4 LT |
394 | } |
395 | break; | |
7e27f18c | 396 | |
1da177e4 | 397 | /* mandatory */ |
8cdddc3f LW |
398 | case RNDIS_OID_GEN_RCV_NO_BUFFER: |
399 | pr_debug("%s: RNDIS_OID_GEN_RCV_NO_BUFFER\n", __func__); | |
15b2d2b5 DB |
400 | if (stats) { |
401 | *outbuf = cpu_to_le32(stats->rx_dropped); | |
1da177e4 | 402 | retval = 0; |
1da177e4 LT |
403 | } |
404 | break; | |
7e27f18c | 405 | |
1da177e4 LT |
406 | /* ieee802.3 OIDs (table 4-3) */ |
407 | ||
408 | /* mandatory */ | |
8cdddc3f | 409 | case RNDIS_OID_802_3_PERMANENT_ADDRESS: |
4cc6c4d5 | 410 | pr_debug("%s: RNDIS_OID_802_3_PERMANENT_ADDRESS\n", __func__); |
83210e59 | 411 | if (params->dev) { |
1da177e4 | 412 | length = ETH_ALEN; |
83210e59 | 413 | memcpy(outbuf, params->host_mac, length); |
1da177e4 | 414 | retval = 0; |
1da177e4 LT |
415 | } |
416 | break; | |
7e27f18c | 417 | |
1da177e4 | 418 | /* mandatory */ |
4cc6c4d5 LW |
419 | case RNDIS_OID_802_3_CURRENT_ADDRESS: |
420 | pr_debug("%s: RNDIS_OID_802_3_CURRENT_ADDRESS\n", __func__); | |
83210e59 | 421 | if (params->dev) { |
1da177e4 | 422 | length = ETH_ALEN; |
83210e59 | 423 | memcpy(outbuf, params->host_mac, length); |
1da177e4 LT |
424 | retval = 0; |
425 | } | |
426 | break; | |
7e27f18c | 427 | |
1da177e4 | 428 | /* mandatory */ |
4cc6c4d5 LW |
429 | case RNDIS_OID_802_3_MULTICAST_LIST: |
430 | pr_debug("%s: RNDIS_OID_802_3_MULTICAST_LIST\n", __func__); | |
1da177e4 | 431 | /* Multicast base address only */ |
a1df4e45 | 432 | *outbuf = cpu_to_le32(0xE0000000); |
1da177e4 LT |
433 | retval = 0; |
434 | break; | |
7e27f18c | 435 | |
1da177e4 | 436 | /* mandatory */ |
4cc6c4d5 LW |
437 | case RNDIS_OID_802_3_MAXIMUM_LIST_SIZE: |
438 | pr_debug("%s: RNDIS_OID_802_3_MAXIMUM_LIST_SIZE\n", __func__); | |
1da177e4 | 439 | /* Multicast base address only */ |
a1df4e45 | 440 | *outbuf = cpu_to_le32(1); |
1da177e4 LT |
441 | retval = 0; |
442 | break; | |
7e27f18c | 443 | |
4cc6c4d5 LW |
444 | case RNDIS_OID_802_3_MAC_OPTIONS: |
445 | pr_debug("%s: RNDIS_OID_802_3_MAC_OPTIONS\n", __func__); | |
6bc2146e QC |
446 | *outbuf = cpu_to_le32(0); |
447 | retval = 0; | |
1da177e4 LT |
448 | break; |
449 | ||
450 | /* ieee802.3 statistics OIDs (table 4-4) */ | |
451 | ||
452 | /* mandatory */ | |
4cc6c4d5 LW |
453 | case RNDIS_OID_802_3_RCV_ERROR_ALIGNMENT: |
454 | pr_debug("%s: RNDIS_OID_802_3_RCV_ERROR_ALIGNMENT\n", __func__); | |
15b2d2b5 DB |
455 | if (stats) { |
456 | *outbuf = cpu_to_le32(stats->rx_frame_errors); | |
1da177e4 LT |
457 | retval = 0; |
458 | } | |
459 | break; | |
7e27f18c | 460 | |
1da177e4 | 461 | /* mandatory */ |
4cc6c4d5 LW |
462 | case RNDIS_OID_802_3_XMIT_ONE_COLLISION: |
463 | pr_debug("%s: RNDIS_OID_802_3_XMIT_ONE_COLLISION\n", __func__); | |
a1df4e45 | 464 | *outbuf = cpu_to_le32(0); |
1da177e4 LT |
465 | retval = 0; |
466 | break; | |
7e27f18c | 467 | |
1da177e4 | 468 | /* mandatory */ |
4cc6c4d5 LW |
469 | case RNDIS_OID_802_3_XMIT_MORE_COLLISIONS: |
470 | pr_debug("%s: RNDIS_OID_802_3_XMIT_MORE_COLLISIONS\n", __func__); | |
a1df4e45 | 471 | *outbuf = cpu_to_le32(0); |
1da177e4 LT |
472 | retval = 0; |
473 | break; | |
7e27f18c | 474 | |
1da177e4 | 475 | default: |
3f5ad864 | 476 | pr_warn("%s: query unknown OID 0x%08X\n", __func__, OID); |
1da177e4 | 477 | } |
340600ab DB |
478 | if (retval < 0) |
479 | length = 0; | |
7e27f18c | 480 | |
a1df4e45 MD |
481 | resp->InformationBufferLength = cpu_to_le32(length); |
482 | r->length = length + sizeof(*resp); | |
483 | resp->MessageLength = cpu_to_le32(r->length); | |
1da177e4 LT |
484 | return retval; |
485 | } | |
486 | ||
83210e59 AP |
487 | static int gen_ndis_set_resp(struct rndis_params *params, u32 OID, |
488 | u8 *buf, u32 buf_len, rndis_resp_t *r) | |
1da177e4 | 489 | { |
a1df4e45 MD |
490 | rndis_set_cmplt_type *resp; |
491 | int i, retval = -ENOTSUPP; | |
1da177e4 LT |
492 | |
493 | if (!r) | |
494 | return -ENOMEM; | |
a1df4e45 | 495 | resp = (rndis_set_cmplt_type *)r->buf; |
1da177e4 LT |
496 | if (!resp) |
497 | return -ENOMEM; | |
498 | ||
340600ab | 499 | if (buf_len && rndis_debug > 1) { |
33376c1c | 500 | pr_debug("set OID %08x value, len %d:\n", OID, buf_len); |
340600ab | 501 | for (i = 0; i < buf_len; i += 16) { |
33376c1c | 502 | pr_debug("%03d: %08x %08x %08x %08x\n", i, |
a5abdeaf HH |
503 | get_unaligned_le32(&buf[i]), |
504 | get_unaligned_le32(&buf[i + 4]), | |
505 | get_unaligned_le32(&buf[i + 8]), | |
506 | get_unaligned_le32(&buf[i + 12])); | |
340600ab | 507 | } |
1da177e4 LT |
508 | } |
509 | ||
510 | switch (OID) { | |
8cdddc3f | 511 | case RNDIS_OID_GEN_CURRENT_PACKET_FILTER: |
1da177e4 | 512 | |
340600ab DB |
513 | /* these NDIS_PACKET_TYPE_* bitflags are shared with |
514 | * cdc_filter; it's not RNDIS-specific | |
1da177e4 LT |
515 | * NDIS_PACKET_TYPE_x == USB_CDC_PACKET_TYPE_x for x in: |
516 | * PROMISCUOUS, DIRECTED, | |
517 | * MULTICAST, ALL_MULTICAST, BROADCAST | |
518 | */ | |
a5abdeaf | 519 | *params->filter = (u16)get_unaligned_le32(buf); |
8cdddc3f | 520 | pr_debug("%s: RNDIS_OID_GEN_CURRENT_PACKET_FILTER %08x\n", |
441b62c1 | 521 | __func__, *params->filter); |
1da177e4 LT |
522 | |
523 | /* this call has a significant side effect: it's | |
524 | * what makes the packet flow start and stop, like | |
525 | * activating the CDC Ethernet altsetting. | |
526 | */ | |
340600ab DB |
527 | retval = 0; |
528 | if (*params->filter) { | |
1da177e4 LT |
529 | params->state = RNDIS_DATA_INITIALIZED; |
530 | netif_carrier_on(params->dev); | |
531 | if (netif_running(params->dev)) | |
a1df4e45 | 532 | netif_wake_queue(params->dev); |
1da177e4 LT |
533 | } else { |
534 | params->state = RNDIS_INITIALIZED; | |
a1df4e45 MD |
535 | netif_carrier_off(params->dev); |
536 | netif_stop_queue(params->dev); | |
1da177e4 LT |
537 | } |
538 | break; | |
7e27f18c | 539 | |
4cc6c4d5 | 540 | case RNDIS_OID_802_3_MULTICAST_LIST: |
7e27f18c | 541 | /* I think we can ignore this */ |
4cc6c4d5 | 542 | pr_debug("%s: RNDIS_OID_802_3_MULTICAST_LIST\n", __func__); |
1da177e4 LT |
543 | retval = 0; |
544 | break; | |
340600ab | 545 | |
1da177e4 | 546 | default: |
3f5ad864 JP |
547 | pr_warn("%s: set unknown OID 0x%08X, size %d\n", |
548 | __func__, OID, buf_len); | |
1da177e4 | 549 | } |
7e27f18c | 550 | |
1da177e4 LT |
551 | return retval; |
552 | } | |
553 | ||
7e27f18c DB |
554 | /* |
555 | * Response Functions | |
1da177e4 LT |
556 | */ |
557 | ||
83210e59 AP |
558 | static int rndis_init_response(struct rndis_params *params, |
559 | rndis_init_msg_type *buf) | |
1da177e4 | 560 | { |
a1df4e45 MD |
561 | rndis_init_cmplt_type *resp; |
562 | rndis_resp_t *r; | |
7e27f18c | 563 | |
15b2d2b5 DB |
564 | if (!params->dev) |
565 | return -ENOTSUPP; | |
7e27f18c | 566 | |
83210e59 | 567 | r = rndis_add_response(params, sizeof(rndis_init_cmplt_type)); |
340600ab DB |
568 | if (!r) |
569 | return -ENOMEM; | |
a1df4e45 | 570 | resp = (rndis_init_cmplt_type *)r->buf; |
7e27f18c | 571 | |
51491167 | 572 | resp->MessageType = cpu_to_le32(RNDIS_MSG_INIT_C); |
a1df4e45 | 573 | resp->MessageLength = cpu_to_le32(52); |
1da177e4 | 574 | resp->RequestID = buf->RequestID; /* Still LE in msg buffer */ |
a1df4e45 MD |
575 | resp->Status = cpu_to_le32(RNDIS_STATUS_SUCCESS); |
576 | resp->MajorVersion = cpu_to_le32(RNDIS_MAJOR_VERSION); | |
577 | resp->MinorVersion = cpu_to_le32(RNDIS_MINOR_VERSION); | |
578 | resp->DeviceFlags = cpu_to_le32(RNDIS_DF_CONNECTIONLESS); | |
579 | resp->Medium = cpu_to_le32(RNDIS_MEDIUM_802_3); | |
580 | resp->MaxPacketsPerTransfer = cpu_to_le32(1); | |
581 | resp->MaxTransferSize = cpu_to_le32( | |
15b2d2b5 | 582 | params->dev->mtu |
a1df4e45 MD |
583 | + sizeof(struct ethhdr) |
584 | + sizeof(struct rndis_packet_msg_type) | |
1da177e4 | 585 | + 22); |
a1df4e45 MD |
586 | resp->PacketAlignmentFactor = cpu_to_le32(0); |
587 | resp->AFListOffset = cpu_to_le32(0); | |
588 | resp->AFListSize = cpu_to_le32(0); | |
7e27f18c | 589 | |
15b2d2b5 | 590 | params->resp_avail(params->v); |
1da177e4 LT |
591 | return 0; |
592 | } | |
593 | ||
83210e59 AP |
594 | static int rndis_query_response(struct rndis_params *params, |
595 | rndis_query_msg_type *buf) | |
1da177e4 LT |
596 | { |
597 | rndis_query_cmplt_type *resp; | |
a1df4e45 | 598 | rndis_resp_t *r; |
7e27f18c | 599 | |
33376c1c | 600 | /* pr_debug("%s: OID = %08X\n", __func__, cpu_to_le32(buf->OID)); */ |
15b2d2b5 DB |
601 | if (!params->dev) |
602 | return -ENOTSUPP; | |
7e27f18c | 603 | |
8763716b ST |
604 | /* |
605 | * we need more memory: | |
606 | * gen_ndis_query_resp expects enough space for | |
607 | * rndis_query_cmplt_type followed by data. | |
608 | * oid_supported_list is the largest data reply | |
1da177e4 | 609 | */ |
83210e59 | 610 | r = rndis_add_response(params, |
a1df4e45 | 611 | sizeof(oid_supported_list) + sizeof(rndis_query_cmplt_type)); |
340600ab DB |
612 | if (!r) |
613 | return -ENOMEM; | |
a1df4e45 | 614 | resp = (rndis_query_cmplt_type *)r->buf; |
7e27f18c | 615 | |
51491167 | 616 | resp->MessageType = cpu_to_le32(RNDIS_MSG_QUERY_C); |
1da177e4 | 617 | resp->RequestID = buf->RequestID; /* Still LE in msg buffer */ |
7e27f18c | 618 | |
83210e59 | 619 | if (gen_ndis_query_resp(params, le32_to_cpu(buf->OID), |
340600ab | 620 | le32_to_cpu(buf->InformationBufferOffset) |
a1df4e45 | 621 | + 8 + (u8 *)buf, |
340600ab DB |
622 | le32_to_cpu(buf->InformationBufferLength), |
623 | r)) { | |
1da177e4 | 624 | /* OID not supported */ |
a1df4e45 MD |
625 | resp->Status = cpu_to_le32(RNDIS_STATUS_NOT_SUPPORTED); |
626 | resp->MessageLength = cpu_to_le32(sizeof *resp); | |
627 | resp->InformationBufferLength = cpu_to_le32(0); | |
628 | resp->InformationBufferOffset = cpu_to_le32(0); | |
1da177e4 | 629 | } else |
a1df4e45 | 630 | resp->Status = cpu_to_le32(RNDIS_STATUS_SUCCESS); |
7e27f18c | 631 | |
15b2d2b5 | 632 | params->resp_avail(params->v); |
1da177e4 LT |
633 | return 0; |
634 | } | |
635 | ||
83210e59 AP |
636 | static int rndis_set_response(struct rndis_params *params, |
637 | rndis_set_msg_type *buf) | |
1da177e4 | 638 | { |
a1df4e45 MD |
639 | u32 BufLength, BufOffset; |
640 | rndis_set_cmplt_type *resp; | |
641 | rndis_resp_t *r; | |
7e27f18c | 642 | |
83210e59 | 643 | r = rndis_add_response(params, sizeof(rndis_set_cmplt_type)); |
340600ab DB |
644 | if (!r) |
645 | return -ENOMEM; | |
a1df4e45 | 646 | resp = (rndis_set_cmplt_type *)r->buf; |
1da177e4 | 647 | |
a1df4e45 MD |
648 | BufLength = le32_to_cpu(buf->InformationBufferLength); |
649 | BufOffset = le32_to_cpu(buf->InformationBufferOffset); | |
1da177e4 | 650 | |
15b2d2b5 | 651 | #ifdef VERBOSE_DEBUG |
33376c1c DB |
652 | pr_debug("%s: Length: %d\n", __func__, BufLength); |
653 | pr_debug("%s: Offset: %d\n", __func__, BufOffset); | |
654 | pr_debug("%s: InfoBuffer: ", __func__); | |
7e27f18c | 655 | |
1da177e4 | 656 | for (i = 0; i < BufLength; i++) { |
33376c1c | 657 | pr_debug("%02x ", *(((u8 *) buf) + i + 8 + BufOffset)); |
1da177e4 | 658 | } |
7e27f18c | 659 | |
33376c1c | 660 | pr_debug("\n"); |
1da177e4 | 661 | #endif |
7e27f18c | 662 | |
51491167 | 663 | resp->MessageType = cpu_to_le32(RNDIS_MSG_SET_C); |
a1df4e45 | 664 | resp->MessageLength = cpu_to_le32(16); |
1da177e4 | 665 | resp->RequestID = buf->RequestID; /* Still LE in msg buffer */ |
83210e59 | 666 | if (gen_ndis_set_resp(params, le32_to_cpu(buf->OID), |
a1df4e45 MD |
667 | ((u8 *)buf) + 8 + BufOffset, BufLength, r)) |
668 | resp->Status = cpu_to_le32(RNDIS_STATUS_NOT_SUPPORTED); | |
7e27f18c | 669 | else |
a1df4e45 | 670 | resp->Status = cpu_to_le32(RNDIS_STATUS_SUCCESS); |
7e27f18c | 671 | |
15b2d2b5 | 672 | params->resp_avail(params->v); |
1da177e4 LT |
673 | return 0; |
674 | } | |
675 | ||
83210e59 AP |
676 | static int rndis_reset_response(struct rndis_params *params, |
677 | rndis_reset_msg_type *buf) | |
1da177e4 | 678 | { |
a1df4e45 MD |
679 | rndis_reset_cmplt_type *resp; |
680 | rndis_resp_t *r; | |
207707d8 XL |
681 | u8 *xbuf; |
682 | u32 length; | |
683 | ||
684 | /* drain the response queue */ | |
685 | while ((xbuf = rndis_get_next_response(params, &length))) | |
686 | rndis_free_response(params, xbuf); | |
7e27f18c | 687 | |
83210e59 | 688 | r = rndis_add_response(params, sizeof(rndis_reset_cmplt_type)); |
340600ab DB |
689 | if (!r) |
690 | return -ENOMEM; | |
a1df4e45 | 691 | resp = (rndis_reset_cmplt_type *)r->buf; |
7e27f18c | 692 | |
51491167 | 693 | resp->MessageType = cpu_to_le32(RNDIS_MSG_RESET_C); |
a1df4e45 MD |
694 | resp->MessageLength = cpu_to_le32(16); |
695 | resp->Status = cpu_to_le32(RNDIS_STATUS_SUCCESS); | |
1da177e4 | 696 | /* resent information */ |
a1df4e45 | 697 | resp->AddressingReset = cpu_to_le32(1); |
7e27f18c | 698 | |
15b2d2b5 | 699 | params->resp_avail(params->v); |
1da177e4 LT |
700 | return 0; |
701 | } | |
702 | ||
83210e59 | 703 | static int rndis_keepalive_response(struct rndis_params *params, |
a1df4e45 | 704 | rndis_keepalive_msg_type *buf) |
1da177e4 | 705 | { |
a1df4e45 MD |
706 | rndis_keepalive_cmplt_type *resp; |
707 | rndis_resp_t *r; | |
1da177e4 LT |
708 | |
709 | /* host "should" check only in RNDIS_DATA_INITIALIZED state */ | |
710 | ||
83210e59 | 711 | r = rndis_add_response(params, sizeof(rndis_keepalive_cmplt_type)); |
340600ab DB |
712 | if (!r) |
713 | return -ENOMEM; | |
a1df4e45 | 714 | resp = (rndis_keepalive_cmplt_type *)r->buf; |
7e27f18c | 715 | |
51491167 | 716 | resp->MessageType = cpu_to_le32(RNDIS_MSG_KEEPALIVE_C); |
a1df4e45 | 717 | resp->MessageLength = cpu_to_le32(16); |
1da177e4 | 718 | resp->RequestID = buf->RequestID; /* Still LE in msg buffer */ |
a1df4e45 | 719 | resp->Status = cpu_to_le32(RNDIS_STATUS_SUCCESS); |
7e27f18c | 720 | |
15b2d2b5 | 721 | params->resp_avail(params->v); |
1da177e4 LT |
722 | return 0; |
723 | } | |
724 | ||
725 | ||
7e27f18c DB |
726 | /* |
727 | * Device to Host Comunication | |
1da177e4 | 728 | */ |
83210e59 | 729 | static int rndis_indicate_status_msg(struct rndis_params *params, u32 status) |
1da177e4 | 730 | { |
a1df4e45 MD |
731 | rndis_indicate_status_msg_type *resp; |
732 | rndis_resp_t *r; | |
7e27f18c | 733 | |
15b2d2b5 | 734 | if (params->state == RNDIS_UNINITIALIZED) |
7e27f18c DB |
735 | return -ENOTSUPP; |
736 | ||
83210e59 | 737 | r = rndis_add_response(params, sizeof(rndis_indicate_status_msg_type)); |
340600ab DB |
738 | if (!r) |
739 | return -ENOMEM; | |
a1df4e45 | 740 | resp = (rndis_indicate_status_msg_type *)r->buf; |
7e27f18c | 741 | |
51491167 | 742 | resp->MessageType = cpu_to_le32(RNDIS_MSG_INDICATE); |
a1df4e45 MD |
743 | resp->MessageLength = cpu_to_le32(20); |
744 | resp->Status = cpu_to_le32(status); | |
745 | resp->StatusBufferLength = cpu_to_le32(0); | |
746 | resp->StatusBufferOffset = cpu_to_le32(0); | |
7e27f18c | 747 | |
15b2d2b5 | 748 | params->resp_avail(params->v); |
1da177e4 LT |
749 | return 0; |
750 | } | |
751 | ||
83210e59 | 752 | int rndis_signal_connect(struct rndis_params *params) |
1da177e4 | 753 | { |
83210e59 AP |
754 | params->media_state = RNDIS_MEDIA_STATE_CONNECTED; |
755 | return rndis_indicate_status_msg(params, RNDIS_STATUS_MEDIA_CONNECT); | |
1da177e4 | 756 | } |
0700faaf | 757 | EXPORT_SYMBOL_GPL(rndis_signal_connect); |
1da177e4 | 758 | |
83210e59 | 759 | int rndis_signal_disconnect(struct rndis_params *params) |
1da177e4 | 760 | { |
83210e59 AP |
761 | params->media_state = RNDIS_MEDIA_STATE_DISCONNECTED; |
762 | return rndis_indicate_status_msg(params, RNDIS_STATUS_MEDIA_DISCONNECT); | |
1da177e4 | 763 | } |
0700faaf | 764 | EXPORT_SYMBOL_GPL(rndis_signal_disconnect); |
1da177e4 | 765 | |
83210e59 | 766 | void rndis_uninit(struct rndis_params *params) |
340600ab | 767 | { |
486e2df6 DB |
768 | u8 *buf; |
769 | u32 length; | |
770 | ||
83210e59 | 771 | if (!params) |
340600ab | 772 | return; |
83210e59 | 773 | params->state = RNDIS_UNINITIALIZED; |
486e2df6 DB |
774 | |
775 | /* drain the response queue */ | |
83210e59 AP |
776 | while ((buf = rndis_get_next_response(params, &length))) |
777 | rndis_free_response(params, buf); | |
340600ab | 778 | } |
0700faaf | 779 | EXPORT_SYMBOL_GPL(rndis_uninit); |
340600ab | 780 | |
83210e59 | 781 | void rndis_set_host_mac(struct rndis_params *params, const u8 *addr) |
1da177e4 | 782 | { |
83210e59 | 783 | params->host_mac = addr; |
1da177e4 | 784 | } |
0700faaf | 785 | EXPORT_SYMBOL_GPL(rndis_set_host_mac); |
1da177e4 | 786 | |
7e27f18c DB |
787 | /* |
788 | * Message Parser | |
1da177e4 | 789 | */ |
83210e59 | 790 | int rndis_msg_parser(struct rndis_params *params, u8 *buf) |
1da177e4 LT |
791 | { |
792 | u32 MsgType, MsgLength; | |
793 | __le32 *tmp; | |
7e27f18c | 794 | |
1da177e4 LT |
795 | if (!buf) |
796 | return -ENOMEM; | |
7e27f18c | 797 | |
a1df4e45 | 798 | tmp = (__le32 *)buf; |
a5abdeaf HH |
799 | MsgType = get_unaligned_le32(tmp++); |
800 | MsgLength = get_unaligned_le32(tmp++); | |
7e27f18c | 801 | |
83210e59 | 802 | if (!params) |
1da177e4 | 803 | return -ENOTSUPP; |
7e27f18c | 804 | |
340600ab DB |
805 | /* NOTE: RNDIS is *EXTREMELY* chatty ... Windows constantly polls for |
806 | * rx/tx statistics and link status, in addition to KEEPALIVE traffic | |
807 | * and normal HC level polling to see if there's any IN traffic. | |
808 | */ | |
809 | ||
1da177e4 | 810 | /* For USB: responses may take up to 10 seconds */ |
340600ab | 811 | switch (MsgType) { |
51491167 LW |
812 | case RNDIS_MSG_INIT: |
813 | pr_debug("%s: RNDIS_MSG_INIT\n", | |
a1df4e45 | 814 | __func__); |
1da177e4 | 815 | params->state = RNDIS_INITIALIZED; |
83210e59 | 816 | return rndis_init_response(params, (rndis_init_msg_type *)buf); |
7e27f18c | 817 | |
51491167 LW |
818 | case RNDIS_MSG_HALT: |
819 | pr_debug("%s: RNDIS_MSG_HALT\n", | |
a1df4e45 | 820 | __func__); |
1da177e4 LT |
821 | params->state = RNDIS_UNINITIALIZED; |
822 | if (params->dev) { | |
a1df4e45 MD |
823 | netif_carrier_off(params->dev); |
824 | netif_stop_queue(params->dev); | |
1da177e4 LT |
825 | } |
826 | return 0; | |
7e27f18c | 827 | |
51491167 | 828 | case RNDIS_MSG_QUERY: |
83210e59 | 829 | return rndis_query_response(params, |
a1df4e45 | 830 | (rndis_query_msg_type *)buf); |
7e27f18c | 831 | |
51491167 | 832 | case RNDIS_MSG_SET: |
83210e59 | 833 | return rndis_set_response(params, (rndis_set_msg_type *)buf); |
7e27f18c | 834 | |
51491167 LW |
835 | case RNDIS_MSG_RESET: |
836 | pr_debug("%s: RNDIS_MSG_RESET\n", | |
a1df4e45 | 837 | __func__); |
83210e59 | 838 | return rndis_reset_response(params, |
a1df4e45 | 839 | (rndis_reset_msg_type *)buf); |
1da177e4 | 840 | |
51491167 | 841 | case RNDIS_MSG_KEEPALIVE: |
1da177e4 | 842 | /* For USB: host does this every 5 seconds */ |
340600ab | 843 | if (rndis_debug > 1) |
51491167 | 844 | pr_debug("%s: RNDIS_MSG_KEEPALIVE\n", |
a1df4e45 | 845 | __func__); |
83210e59 | 846 | return rndis_keepalive_response(params, |
7e27f18c | 847 | (rndis_keepalive_msg_type *) |
1da177e4 | 848 | buf); |
7e27f18c DB |
849 | |
850 | default: | |
1da177e4 LT |
851 | /* At least Windows XP emits some undefined RNDIS messages. |
852 | * In one case those messages seemed to relate to the host | |
853 | * suspending itself. | |
854 | */ | |
3f5ad864 | 855 | pr_warn("%s: unknown RNDIS message 0x%08X len %d\n", |
a1df4e45 | 856 | __func__, MsgType, MsgLength); |
d3091cff AS |
857 | print_hex_dump_bytes(__func__, DUMP_PREFIX_OFFSET, |
858 | buf, MsgLength); | |
1da177e4 LT |
859 | break; |
860 | } | |
7e27f18c | 861 | |
1da177e4 LT |
862 | return -ENOTSUPP; |
863 | } | |
0700faaf | 864 | EXPORT_SYMBOL_GPL(rndis_msg_parser); |
1da177e4 | 865 | |
d6d22922 AP |
866 | static inline int rndis_get_nr(void) |
867 | { | |
868 | return ida_simple_get(&rndis_ida, 0, 0, GFP_KERNEL); | |
869 | } | |
870 | ||
871 | static inline void rndis_put_nr(int nr) | |
872 | { | |
873 | ida_simple_remove(&rndis_ida, nr); | |
874 | } | |
875 | ||
83210e59 | 876 | struct rndis_params *rndis_register(void (*resp_avail)(void *v), void *v) |
1da177e4 | 877 | { |
d6d22922 | 878 | struct rndis_params *params; |
81dff869 | 879 | int i; |
7e27f18c | 880 | |
15b2d2b5 | 881 | if (!resp_avail) |
83210e59 | 882 | return ERR_PTR(-EINVAL); |
15b2d2b5 | 883 | |
d6d22922 AP |
884 | i = rndis_get_nr(); |
885 | if (i < 0) { | |
886 | pr_debug("failed\n"); | |
887 | ||
888 | return ERR_PTR(-ENODEV); | |
889 | } | |
890 | ||
891 | params = kzalloc(sizeof(*params), GFP_KERNEL); | |
892 | if (!params) { | |
893 | rndis_put_nr(i); | |
894 | ||
895 | return ERR_PTR(-ENOMEM); | |
896 | } | |
897 | ||
898 | #ifdef CONFIG_USB_GADGET_DEBUG_FILES | |
899 | { | |
900 | struct proc_dir_entry *proc_entry; | |
901 | char name[20]; | |
902 | ||
903 | sprintf(name, NAME_TEMPLATE, i); | |
904 | proc_entry = proc_create_data(name, 0660, NULL, | |
905 | &rndis_proc_fops, params); | |
906 | if (!proc_entry) { | |
907 | kfree(params); | |
908 | rndis_put_nr(i); | |
909 | ||
910 | return ERR_PTR(-EIO); | |
1da177e4 LT |
911 | } |
912 | } | |
d6d22922 | 913 | #endif |
7e27f18c | 914 | |
d6d22922 AP |
915 | params->confignr = i; |
916 | params->used = 1; | |
917 | params->state = RNDIS_UNINITIALIZED; | |
918 | params->media_state = RNDIS_MEDIA_STATE_DISCONNECTED; | |
919 | params->resp_avail = resp_avail; | |
920 | params->v = v; | |
f6281af9 | 921 | INIT_LIST_HEAD(¶ms->resp_queue); |
d6d22922 AP |
922 | pr_debug("%s: configNr = %d\n", __func__, i); |
923 | ||
924 | return params; | |
1da177e4 | 925 | } |
0700faaf | 926 | EXPORT_SYMBOL_GPL(rndis_register); |
1da177e4 | 927 | |
83210e59 | 928 | void rndis_deregister(struct rndis_params *params) |
1da177e4 | 929 | { |
81dff869 | 930 | int i; |
d6d22922 | 931 | |
a1df4e45 | 932 | pr_debug("%s:\n", __func__); |
7e27f18c | 933 | |
83210e59 AP |
934 | if (!params) |
935 | return; | |
d6d22922 AP |
936 | |
937 | i = params->confignr; | |
938 | ||
939 | #ifdef CONFIG_USB_GADGET_DEBUG_FILES | |
940 | { | |
d6d22922 AP |
941 | char name[20]; |
942 | ||
943 | sprintf(name, NAME_TEMPLATE, i); | |
944 | remove_proc_entry(name, NULL); | |
945 | } | |
946 | #endif | |
947 | ||
948 | kfree(params); | |
949 | rndis_put_nr(i); | |
1da177e4 | 950 | } |
0700faaf | 951 | EXPORT_SYMBOL_GPL(rndis_deregister); |
83210e59 AP |
952 | int rndis_set_param_dev(struct rndis_params *params, struct net_device *dev, |
953 | u16 *cdc_filter) | |
1da177e4 | 954 | { |
33376c1c | 955 | pr_debug("%s:\n", __func__); |
15b2d2b5 DB |
956 | if (!dev) |
957 | return -EINVAL; | |
83210e59 AP |
958 | if (!params) |
959 | return -1; | |
7e27f18c | 960 | |
83210e59 AP |
961 | params->dev = dev; |
962 | params->filter = cdc_filter; | |
7e27f18c | 963 | |
1da177e4 LT |
964 | return 0; |
965 | } | |
0700faaf | 966 | EXPORT_SYMBOL_GPL(rndis_set_param_dev); |
1da177e4 | 967 | |
83210e59 AP |
968 | int rndis_set_param_vendor(struct rndis_params *params, u32 vendorID, |
969 | const char *vendorDescr) | |
1da177e4 | 970 | { |
33376c1c | 971 | pr_debug("%s:\n", __func__); |
1da177e4 | 972 | if (!vendorDescr) return -1; |
83210e59 AP |
973 | if (!params) |
974 | return -1; | |
7e27f18c | 975 | |
83210e59 AP |
976 | params->vendorID = vendorID; |
977 | params->vendorDescr = vendorDescr; | |
7e27f18c | 978 | |
1da177e4 LT |
979 | return 0; |
980 | } | |
0700faaf | 981 | EXPORT_SYMBOL_GPL(rndis_set_param_vendor); |
1da177e4 | 982 | |
83210e59 | 983 | int rndis_set_param_medium(struct rndis_params *params, u32 medium, u32 speed) |
1da177e4 | 984 | { |
33376c1c | 985 | pr_debug("%s: %u %u\n", __func__, medium, speed); |
83210e59 AP |
986 | if (!params) |
987 | return -1; | |
7e27f18c | 988 | |
83210e59 AP |
989 | params->medium = medium; |
990 | params->speed = speed; | |
7e27f18c | 991 | |
1da177e4 LT |
992 | return 0; |
993 | } | |
0700faaf | 994 | EXPORT_SYMBOL_GPL(rndis_set_param_medium); |
1da177e4 | 995 | |
a1df4e45 | 996 | void rndis_add_hdr(struct sk_buff *skb) |
1da177e4 | 997 | { |
a1df4e45 | 998 | struct rndis_packet_msg_type *header; |
1da177e4 LT |
999 | |
1000 | if (!skb) | |
1001 | return; | |
d58ff351 | 1002 | header = skb_push(skb, sizeof(*header)); |
a1df4e45 | 1003 | memset(header, 0, sizeof *header); |
51491167 | 1004 | header->MessageType = cpu_to_le32(RNDIS_MSG_PACKET); |
1da177e4 | 1005 | header->MessageLength = cpu_to_le32(skb->len); |
a1df4e45 MD |
1006 | header->DataOffset = cpu_to_le32(36); |
1007 | header->DataLength = cpu_to_le32(skb->len - sizeof(*header)); | |
1da177e4 | 1008 | } |
0700faaf | 1009 | EXPORT_SYMBOL_GPL(rndis_add_hdr); |
1da177e4 | 1010 | |
83210e59 | 1011 | void rndis_free_response(struct rndis_params *params, u8 *buf) |
1da177e4 | 1012 | { |
f6281af9 | 1013 | rndis_resp_t *r, *n; |
7e27f18c | 1014 | |
f6281af9 | 1015 | list_for_each_entry_safe(r, n, ¶ms->resp_queue, list) { |
1c17a353 | 1016 | if (r->buf == buf) { |
a1df4e45 MD |
1017 | list_del(&r->list); |
1018 | kfree(r); | |
1da177e4 LT |
1019 | } |
1020 | } | |
1021 | } | |
0700faaf | 1022 | EXPORT_SYMBOL_GPL(rndis_free_response); |
1da177e4 | 1023 | |
83210e59 | 1024 | u8 *rndis_get_next_response(struct rndis_params *params, u32 *length) |
1da177e4 | 1025 | { |
f6281af9 | 1026 | rndis_resp_t *r, *n; |
7e27f18c | 1027 | |
1da177e4 | 1028 | if (!length) return NULL; |
7e27f18c | 1029 | |
f6281af9 | 1030 | list_for_each_entry_safe(r, n, ¶ms->resp_queue, list) { |
1da177e4 LT |
1031 | if (!r->send) { |
1032 | r->send = 1; | |
1033 | *length = r->length; | |
1034 | return r->buf; | |
1035 | } | |
1036 | } | |
7e27f18c | 1037 | |
1da177e4 LT |
1038 | return NULL; |
1039 | } | |
0700faaf | 1040 | EXPORT_SYMBOL_GPL(rndis_get_next_response); |
1da177e4 | 1041 | |
83210e59 | 1042 | static rndis_resp_t *rndis_add_response(struct rndis_params *params, u32 length) |
1da177e4 | 1043 | { |
a1df4e45 | 1044 | rndis_resp_t *r; |
7e27f18c | 1045 | |
a1df4e45 MD |
1046 | /* NOTE: this gets copied into ether.c USB_BUFSIZ bytes ... */ |
1047 | r = kmalloc(sizeof(rndis_resp_t) + length, GFP_ATOMIC); | |
1da177e4 | 1048 | if (!r) return NULL; |
7e27f18c | 1049 | |
a1df4e45 | 1050 | r->buf = (u8 *)(r + 1); |
1da177e4 LT |
1051 | r->length = length; |
1052 | r->send = 0; | |
7e27f18c | 1053 | |
f6281af9 | 1054 | list_add_tail(&r->list, ¶ms->resp_queue); |
1da177e4 LT |
1055 | return r; |
1056 | } | |
1057 | ||
9b39e9dd BN |
1058 | int rndis_rm_hdr(struct gether *port, |
1059 | struct sk_buff *skb, | |
1060 | struct sk_buff_head *list) | |
1da177e4 | 1061 | { |
6cdee106 | 1062 | /* tmp points to a struct rndis_packet_msg_type */ |
a1df4e45 | 1063 | __le32 *tmp = (void *)skb->data; |
1da177e4 | 1064 | |
6cdee106 | 1065 | /* MessageType, MessageLength */ |
51491167 | 1066 | if (cpu_to_le32(RNDIS_MSG_PACKET) |
9b39e9dd BN |
1067 | != get_unaligned(tmp++)) { |
1068 | dev_kfree_skb_any(skb); | |
6cdee106 | 1069 | return -EINVAL; |
9b39e9dd | 1070 | } |
6cdee106 DB |
1071 | tmp++; |
1072 | ||
1073 | /* DataOffset, DataLength */ | |
9b39e9dd BN |
1074 | if (!skb_pull(skb, get_unaligned_le32(tmp++) + 8)) { |
1075 | dev_kfree_skb_any(skb); | |
6cdee106 | 1076 | return -EOVERFLOW; |
9b39e9dd | 1077 | } |
a5abdeaf | 1078 | skb_trim(skb, get_unaligned_le32(tmp++)); |
1da177e4 | 1079 | |
9b39e9dd | 1080 | skb_queue_tail(list, skb); |
1da177e4 LT |
1081 | return 0; |
1082 | } | |
0700faaf | 1083 | EXPORT_SYMBOL_GPL(rndis_rm_hdr); |
1da177e4 | 1084 | |
a1df4e45 | 1085 | #ifdef CONFIG_USB_GADGET_DEBUG_FILES |
1da177e4 | 1086 | |
e184d5fc | 1087 | static int rndis_proc_show(struct seq_file *m, void *v) |
1da177e4 | 1088 | { |
e184d5fc | 1089 | rndis_params *param = m->private; |
7e27f18c | 1090 | |
e184d5fc | 1091 | seq_printf(m, |
1da177e4 LT |
1092 | "Config Nr. %d\n" |
1093 | "used : %s\n" | |
1094 | "state : %s\n" | |
1095 | "medium : 0x%08X\n" | |
1096 | "speed : %d\n" | |
1097 | "cable : %s\n" | |
1098 | "vendor ID : 0x%08X\n" | |
7e27f18c DB |
1099 | "vendor : %s\n", |
1100 | param->confignr, (param->used) ? "y" : "n", | |
1da177e4 LT |
1101 | ({ char *s = "?"; |
1102 | switch (param->state) { | |
1103 | case RNDIS_UNINITIALIZED: | |
1104 | s = "RNDIS_UNINITIALIZED"; break; | |
1105 | case RNDIS_INITIALIZED: | |
1106 | s = "RNDIS_INITIALIZED"; break; | |
1107 | case RNDIS_DATA_INITIALIZED: | |
1108 | s = "RNDIS_DATA_INITIALIZED"; break; | |
2b84f92b | 1109 | } s; }), |
7e27f18c DB |
1110 | param->medium, |
1111 | (param->media_state) ? 0 : param->speed*100, | |
1da177e4 | 1112 | (param->media_state) ? "disconnected" : "connected", |
7e27f18c | 1113 | param->vendorID, param->vendorDescr); |
e184d5fc | 1114 | return 0; |
1da177e4 LT |
1115 | } |
1116 | ||
e184d5fc | 1117 | static ssize_t rndis_proc_write(struct file *file, const char __user *buffer, |
a1df4e45 | 1118 | size_t count, loff_t *ppos) |
1da177e4 | 1119 | { |
d9dda78b | 1120 | rndis_params *p = PDE_DATA(file_inode(file)); |
1da177e4 LT |
1121 | u32 speed = 0; |
1122 | int i, fl_speed = 0; | |
7e27f18c | 1123 | |
1da177e4 LT |
1124 | for (i = 0; i < count; i++) { |
1125 | char c; | |
1126 | if (get_user(c, buffer)) | |
1127 | return -EFAULT; | |
1128 | switch (c) { | |
1129 | case '0': | |
1130 | case '1': | |
1131 | case '2': | |
1132 | case '3': | |
1133 | case '4': | |
1134 | case '5': | |
1135 | case '6': | |
1136 | case '7': | |
1137 | case '8': | |
1138 | case '9': | |
1139 | fl_speed = 1; | |
a1df4e45 | 1140 | speed = speed * 10 + c - '0'; |
1da177e4 LT |
1141 | break; |
1142 | case 'C': | |
1143 | case 'c': | |
868055fd | 1144 | rndis_signal_connect(p); |
1da177e4 LT |
1145 | break; |
1146 | case 'D': | |
1147 | case 'd': | |
868055fd | 1148 | rndis_signal_disconnect(p); |
1da177e4 | 1149 | break; |
7e27f18c | 1150 | default: |
1da177e4 | 1151 | if (fl_speed) p->speed = speed; |
33376c1c | 1152 | else pr_debug("%c is not valid\n", c); |
1da177e4 LT |
1153 | break; |
1154 | } | |
7e27f18c | 1155 | |
1da177e4 LT |
1156 | buffer++; |
1157 | } | |
7e27f18c | 1158 | |
1da177e4 LT |
1159 | return count; |
1160 | } | |
1161 | ||
e184d5fc AD |
1162 | static int rndis_proc_open(struct inode *inode, struct file *file) |
1163 | { | |
d9dda78b | 1164 | return single_open(file, rndis_proc_show, PDE_DATA(inode)); |
e184d5fc AD |
1165 | } |
1166 | ||
1167 | static const struct file_operations rndis_proc_fops = { | |
1168 | .owner = THIS_MODULE, | |
1169 | .open = rndis_proc_open, | |
1170 | .read = seq_read, | |
1171 | .llseek = seq_lseek, | |
1172 | .release = single_release, | |
1173 | .write = rndis_proc_write, | |
1174 | }; | |
1175 | ||
a1df4e45 | 1176 | #define NAME_TEMPLATE "driver/rndis-%03d" |
1da177e4 | 1177 | |
a1df4e45 | 1178 | #endif /* CONFIG_USB_GADGET_DEBUG_FILES */ |