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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 */ |
a1df4e45 | 83 | static const u32 oid_supported_list[] = |
340600ab DB |
84 | { |
85 | /* the general stuff */ | |
8cdddc3f LW |
86 | RNDIS_OID_GEN_SUPPORTED_LIST, |
87 | RNDIS_OID_GEN_HARDWARE_STATUS, | |
88 | RNDIS_OID_GEN_MEDIA_SUPPORTED, | |
89 | RNDIS_OID_GEN_MEDIA_IN_USE, | |
90 | RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE, | |
91 | RNDIS_OID_GEN_LINK_SPEED, | |
92 | RNDIS_OID_GEN_TRANSMIT_BLOCK_SIZE, | |
93 | RNDIS_OID_GEN_RECEIVE_BLOCK_SIZE, | |
94 | RNDIS_OID_GEN_VENDOR_ID, | |
95 | RNDIS_OID_GEN_VENDOR_DESCRIPTION, | |
96 | RNDIS_OID_GEN_VENDOR_DRIVER_VERSION, | |
97 | RNDIS_OID_GEN_CURRENT_PACKET_FILTER, | |
98 | RNDIS_OID_GEN_MAXIMUM_TOTAL_SIZE, | |
99 | RNDIS_OID_GEN_MEDIA_CONNECT_STATUS, | |
100 | RNDIS_OID_GEN_PHYSICAL_MEDIUM, | |
7e27f18c | 101 | |
340600ab | 102 | /* the statistical stuff */ |
8cdddc3f LW |
103 | RNDIS_OID_GEN_XMIT_OK, |
104 | RNDIS_OID_GEN_RCV_OK, | |
105 | RNDIS_OID_GEN_XMIT_ERROR, | |
106 | RNDIS_OID_GEN_RCV_ERROR, | |
107 | RNDIS_OID_GEN_RCV_NO_BUFFER, | |
340600ab | 108 | #ifdef RNDIS_OPTIONAL_STATS |
8cdddc3f LW |
109 | RNDIS_OID_GEN_DIRECTED_BYTES_XMIT, |
110 | RNDIS_OID_GEN_DIRECTED_FRAMES_XMIT, | |
111 | RNDIS_OID_GEN_MULTICAST_BYTES_XMIT, | |
112 | RNDIS_OID_GEN_MULTICAST_FRAMES_XMIT, | |
113 | RNDIS_OID_GEN_BROADCAST_BYTES_XMIT, | |
114 | RNDIS_OID_GEN_BROADCAST_FRAMES_XMIT, | |
115 | RNDIS_OID_GEN_DIRECTED_BYTES_RCV, | |
116 | RNDIS_OID_GEN_DIRECTED_FRAMES_RCV, | |
117 | RNDIS_OID_GEN_MULTICAST_BYTES_RCV, | |
118 | RNDIS_OID_GEN_MULTICAST_FRAMES_RCV, | |
119 | RNDIS_OID_GEN_BROADCAST_BYTES_RCV, | |
120 | RNDIS_OID_GEN_BROADCAST_FRAMES_RCV, | |
121 | RNDIS_OID_GEN_RCV_CRC_ERROR, | |
122 | RNDIS_OID_GEN_TRANSMIT_QUEUE_LENGTH, | |
340600ab DB |
123 | #endif /* RNDIS_OPTIONAL_STATS */ |
124 | ||
7e27f18c | 125 | /* mandatory 802.3 */ |
340600ab | 126 | /* the general stuff */ |
8cdddc3f | 127 | RNDIS_OID_802_3_PERMANENT_ADDRESS, |
4cc6c4d5 LW |
128 | RNDIS_OID_802_3_CURRENT_ADDRESS, |
129 | RNDIS_OID_802_3_MULTICAST_LIST, | |
130 | RNDIS_OID_802_3_MAC_OPTIONS, | |
131 | RNDIS_OID_802_3_MAXIMUM_LIST_SIZE, | |
7e27f18c | 132 | |
340600ab | 133 | /* the statistical stuff */ |
4cc6c4d5 LW |
134 | RNDIS_OID_802_3_RCV_ERROR_ALIGNMENT, |
135 | RNDIS_OID_802_3_XMIT_ONE_COLLISION, | |
136 | RNDIS_OID_802_3_XMIT_MORE_COLLISIONS, | |
340600ab | 137 | #ifdef RNDIS_OPTIONAL_STATS |
4cc6c4d5 LW |
138 | RNDIS_OID_802_3_XMIT_DEFERRED, |
139 | RNDIS_OID_802_3_XMIT_MAX_COLLISIONS, | |
140 | RNDIS_OID_802_3_RCV_OVERRUN, | |
141 | RNDIS_OID_802_3_XMIT_UNDERRUN, | |
142 | RNDIS_OID_802_3_XMIT_HEARTBEAT_FAILURE, | |
143 | RNDIS_OID_802_3_XMIT_TIMES_CRS_LOST, | |
144 | RNDIS_OID_802_3_XMIT_LATE_COLLISIONS, | |
340600ab DB |
145 | #endif /* RNDIS_OPTIONAL_STATS */ |
146 | ||
147 | #ifdef RNDIS_PM | |
15b2d2b5 DB |
148 | /* PM and wakeup are "mandatory" for USB, but the RNDIS specs |
149 | * don't say what they mean ... and the NDIS specs are often | |
150 | * confusing and/or ambiguous in this context. (That is, more | |
151 | * so than their specs for the other OIDs.) | |
152 | * | |
153 | * FIXME someone who knows what these should do, please | |
154 | * implement them! | |
155 | */ | |
340600ab DB |
156 | |
157 | /* power management */ | |
158 | OID_PNP_CAPABILITIES, | |
159 | OID_PNP_QUERY_POWER, | |
160 | OID_PNP_SET_POWER, | |
161 | ||
162 | #ifdef RNDIS_WAKEUP | |
163 | /* wake up host */ | |
164 | OID_PNP_ENABLE_WAKE_UP, | |
165 | OID_PNP_ADD_WAKE_UP_PATTERN, | |
166 | OID_PNP_REMOVE_WAKE_UP_PATTERN, | |
167 | #endif /* RNDIS_WAKEUP */ | |
168 | #endif /* RNDIS_PM */ | |
169 | }; | |
170 | ||
171 | ||
1da177e4 | 172 | /* NDIS Functions */ |
83210e59 | 173 | static int gen_ndis_query_resp(struct rndis_params *params, u32 OID, u8 *buf, |
a1df4e45 | 174 | unsigned buf_len, rndis_resp_t *r) |
1da177e4 | 175 | { |
a1df4e45 MD |
176 | int retval = -ENOTSUPP; |
177 | u32 length = 4; /* usually */ | |
178 | __le32 *outbuf; | |
179 | int i, count; | |
180 | rndis_query_cmplt_type *resp; | |
181 | struct net_device *net; | |
28172739 | 182 | struct rtnl_link_stats64 temp; |
fdb93f8a | 183 | const struct rtnl_link_stats64 *stats; |
1da177e4 LT |
184 | |
185 | if (!r) return -ENOMEM; | |
a1df4e45 | 186 | resp = (rndis_query_cmplt_type *)r->buf; |
1da177e4 LT |
187 | |
188 | if (!resp) return -ENOMEM; | |
340600ab DB |
189 | |
190 | if (buf_len && rndis_debug > 1) { | |
33376c1c | 191 | pr_debug("query OID %08x value, len %d:\n", OID, buf_len); |
340600ab | 192 | for (i = 0; i < buf_len; i += 16) { |
33376c1c | 193 | pr_debug("%03d: %08x %08x %08x %08x\n", i, |
a5abdeaf HH |
194 | get_unaligned_le32(&buf[i]), |
195 | get_unaligned_le32(&buf[i + 4]), | |
196 | get_unaligned_le32(&buf[i + 8]), | |
197 | get_unaligned_le32(&buf[i + 12])); | |
340600ab DB |
198 | } |
199 | } | |
200 | ||
201 | /* response goes here, right after the header */ | |
a1df4e45 MD |
202 | outbuf = (__le32 *)&resp[1]; |
203 | resp->InformationBufferOffset = cpu_to_le32(16); | |
340600ab | 204 | |
83210e59 | 205 | net = params->dev; |
28172739 | 206 | stats = dev_get_stats(net, &temp); |
15b2d2b5 | 207 | |
1da177e4 LT |
208 | switch (OID) { |
209 | ||
210 | /* general oids (table 4-1) */ | |
211 | ||
212 | /* mandatory */ | |
8cdddc3f LW |
213 | case RNDIS_OID_GEN_SUPPORTED_LIST: |
214 | pr_debug("%s: RNDIS_OID_GEN_SUPPORTED_LIST\n", __func__); | |
a1df4e45 MD |
215 | length = sizeof(oid_supported_list); |
216 | count = length / sizeof(u32); | |
1da177e4 | 217 | for (i = 0; i < count; i++) |
a1df4e45 | 218 | outbuf[i] = cpu_to_le32(oid_supported_list[i]); |
1da177e4 LT |
219 | retval = 0; |
220 | break; | |
7e27f18c | 221 | |
1da177e4 | 222 | /* mandatory */ |
8cdddc3f LW |
223 | case RNDIS_OID_GEN_HARDWARE_STATUS: |
224 | pr_debug("%s: RNDIS_OID_GEN_HARDWARE_STATUS\n", __func__); | |
7e27f18c | 225 | /* Bogus question! |
1da177e4 | 226 | * Hardware must be ready to receive high level protocols. |
7e27f18c | 227 | * BTW: |
1da177e4 LT |
228 | * reddite ergo quae sunt Caesaris Caesari |
229 | * et quae sunt Dei Deo! | |
230 | */ | |
a1df4e45 | 231 | *outbuf = cpu_to_le32(0); |
1da177e4 LT |
232 | retval = 0; |
233 | break; | |
7e27f18c | 234 | |
1da177e4 | 235 | /* mandatory */ |
8cdddc3f LW |
236 | case RNDIS_OID_GEN_MEDIA_SUPPORTED: |
237 | pr_debug("%s: RNDIS_OID_GEN_MEDIA_SUPPORTED\n", __func__); | |
83210e59 | 238 | *outbuf = cpu_to_le32(params->medium); |
1da177e4 LT |
239 | retval = 0; |
240 | break; | |
7e27f18c | 241 | |
1da177e4 | 242 | /* mandatory */ |
8cdddc3f LW |
243 | case RNDIS_OID_GEN_MEDIA_IN_USE: |
244 | pr_debug("%s: RNDIS_OID_GEN_MEDIA_IN_USE\n", __func__); | |
1da177e4 | 245 | /* one medium, one transport... (maybe you do it better) */ |
83210e59 | 246 | *outbuf = cpu_to_le32(params->medium); |
1da177e4 LT |
247 | retval = 0; |
248 | break; | |
7e27f18c | 249 | |
1da177e4 | 250 | /* mandatory */ |
8cdddc3f LW |
251 | case RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE: |
252 | pr_debug("%s: RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE\n", __func__); | |
83210e59 AP |
253 | if (params->dev) { |
254 | *outbuf = cpu_to_le32(params->dev->mtu); | |
1da177e4 | 255 | retval = 0; |
1da177e4 LT |
256 | } |
257 | break; | |
7e27f18c | 258 | |
1da177e4 | 259 | /* mandatory */ |
8cdddc3f | 260 | case RNDIS_OID_GEN_LINK_SPEED: |
340600ab | 261 | if (rndis_debug > 1) |
8cdddc3f | 262 | pr_debug("%s: RNDIS_OID_GEN_LINK_SPEED\n", __func__); |
83210e59 | 263 | if (params->media_state == RNDIS_MEDIA_STATE_DISCONNECTED) |
a1df4e45 | 264 | *outbuf = cpu_to_le32(0); |
1da177e4 | 265 | else |
83210e59 | 266 | *outbuf = cpu_to_le32(params->speed); |
1da177e4 LT |
267 | retval = 0; |
268 | break; | |
269 | ||
270 | /* mandatory */ | |
8cdddc3f LW |
271 | case RNDIS_OID_GEN_TRANSMIT_BLOCK_SIZE: |
272 | pr_debug("%s: RNDIS_OID_GEN_TRANSMIT_BLOCK_SIZE\n", __func__); | |
83210e59 AP |
273 | if (params->dev) { |
274 | *outbuf = cpu_to_le32(params->dev->mtu); | |
1da177e4 LT |
275 | retval = 0; |
276 | } | |
277 | break; | |
7e27f18c | 278 | |
1da177e4 | 279 | /* mandatory */ |
8cdddc3f LW |
280 | case RNDIS_OID_GEN_RECEIVE_BLOCK_SIZE: |
281 | pr_debug("%s: RNDIS_OID_GEN_RECEIVE_BLOCK_SIZE\n", __func__); | |
83210e59 AP |
282 | if (params->dev) { |
283 | *outbuf = cpu_to_le32(params->dev->mtu); | |
1da177e4 LT |
284 | retval = 0; |
285 | } | |
286 | break; | |
7e27f18c | 287 | |
1da177e4 | 288 | /* mandatory */ |
8cdddc3f LW |
289 | case RNDIS_OID_GEN_VENDOR_ID: |
290 | pr_debug("%s: RNDIS_OID_GEN_VENDOR_ID\n", __func__); | |
83210e59 | 291 | *outbuf = cpu_to_le32(params->vendorID); |
1da177e4 LT |
292 | retval = 0; |
293 | break; | |
7e27f18c | 294 | |
1da177e4 | 295 | /* mandatory */ |
8cdddc3f LW |
296 | case RNDIS_OID_GEN_VENDOR_DESCRIPTION: |
297 | pr_debug("%s: RNDIS_OID_GEN_VENDOR_DESCRIPTION\n", __func__); | |
83210e59 AP |
298 | if (params->vendorDescr) { |
299 | length = strlen(params->vendorDescr); | |
300 | memcpy(outbuf, params->vendorDescr, length); | |
037d3656 MO |
301 | } else { |
302 | outbuf[0] = 0; | |
303 | } | |
1da177e4 LT |
304 | retval = 0; |
305 | break; | |
306 | ||
8cdddc3f LW |
307 | case RNDIS_OID_GEN_VENDOR_DRIVER_VERSION: |
308 | pr_debug("%s: RNDIS_OID_GEN_VENDOR_DRIVER_VERSION\n", __func__); | |
1da177e4 | 309 | /* Created as LE */ |
340600ab | 310 | *outbuf = rndis_driver_version; |
1da177e4 LT |
311 | retval = 0; |
312 | break; | |
313 | ||
314 | /* mandatory */ | |
8cdddc3f LW |
315 | case RNDIS_OID_GEN_CURRENT_PACKET_FILTER: |
316 | pr_debug("%s: RNDIS_OID_GEN_CURRENT_PACKET_FILTER\n", __func__); | |
83210e59 | 317 | *outbuf = cpu_to_le32(*params->filter); |
1da177e4 LT |
318 | retval = 0; |
319 | break; | |
320 | ||
321 | /* mandatory */ | |
8cdddc3f LW |
322 | case RNDIS_OID_GEN_MAXIMUM_TOTAL_SIZE: |
323 | pr_debug("%s: RNDIS_OID_GEN_MAXIMUM_TOTAL_SIZE\n", __func__); | |
35c26c2c | 324 | *outbuf = cpu_to_le32(RNDIS_MAX_TOTAL_SIZE); |
1da177e4 LT |
325 | retval = 0; |
326 | break; | |
327 | ||
328 | /* mandatory */ | |
8cdddc3f | 329 | case RNDIS_OID_GEN_MEDIA_CONNECT_STATUS: |
340600ab | 330 | if (rndis_debug > 1) |
8cdddc3f | 331 | pr_debug("%s: RNDIS_OID_GEN_MEDIA_CONNECT_STATUS\n", __func__); |
83210e59 | 332 | *outbuf = cpu_to_le32(params->media_state); |
1da177e4 LT |
333 | retval = 0; |
334 | break; | |
335 | ||
8cdddc3f LW |
336 | case RNDIS_OID_GEN_PHYSICAL_MEDIUM: |
337 | pr_debug("%s: RNDIS_OID_GEN_PHYSICAL_MEDIUM\n", __func__); | |
a1df4e45 | 338 | *outbuf = cpu_to_le32(0); |
1da177e4 LT |
339 | retval = 0; |
340 | break; | |
341 | ||
342 | /* The RNDIS specification is incomplete/wrong. Some versions | |
343 | * of MS-Windows expect OIDs that aren't specified there. Other | |
344 | * versions emit undefined RNDIS messages. DOCUMENT ALL THESE! | |
345 | */ | |
8cdddc3f LW |
346 | case RNDIS_OID_GEN_MAC_OPTIONS: /* from WinME */ |
347 | pr_debug("%s: RNDIS_OID_GEN_MAC_OPTIONS\n", __func__); | |
35c26c2c | 348 | *outbuf = cpu_to_le32( |
e20289ed LW |
349 | RNDIS_MAC_OPTION_RECEIVE_SERIALIZED |
350 | | RNDIS_MAC_OPTION_FULL_DUPLEX); | |
1da177e4 LT |
351 | retval = 0; |
352 | break; | |
353 | ||
354 | /* statistics OIDs (table 4-2) */ | |
355 | ||
356 | /* mandatory */ | |
8cdddc3f | 357 | case RNDIS_OID_GEN_XMIT_OK: |
340600ab | 358 | if (rndis_debug > 1) |
8cdddc3f | 359 | pr_debug("%s: RNDIS_OID_GEN_XMIT_OK\n", __func__); |
15b2d2b5 DB |
360 | if (stats) { |
361 | *outbuf = cpu_to_le32(stats->tx_packets | |
362 | - stats->tx_errors - stats->tx_dropped); | |
1da177e4 | 363 | retval = 0; |
1da177e4 LT |
364 | } |
365 | break; | |
366 | ||
367 | /* mandatory */ | |
8cdddc3f | 368 | case RNDIS_OID_GEN_RCV_OK: |
340600ab | 369 | if (rndis_debug > 1) |
8cdddc3f | 370 | pr_debug("%s: RNDIS_OID_GEN_RCV_OK\n", __func__); |
15b2d2b5 DB |
371 | if (stats) { |
372 | *outbuf = cpu_to_le32(stats->rx_packets | |
373 | - stats->rx_errors - stats->rx_dropped); | |
1da177e4 | 374 | retval = 0; |
1da177e4 LT |
375 | } |
376 | break; | |
7e27f18c | 377 | |
1da177e4 | 378 | /* mandatory */ |
8cdddc3f | 379 | case RNDIS_OID_GEN_XMIT_ERROR: |
340600ab | 380 | if (rndis_debug > 1) |
8cdddc3f | 381 | pr_debug("%s: RNDIS_OID_GEN_XMIT_ERROR\n", __func__); |
15b2d2b5 DB |
382 | if (stats) { |
383 | *outbuf = cpu_to_le32(stats->tx_errors); | |
1da177e4 | 384 | retval = 0; |
1da177e4 LT |
385 | } |
386 | break; | |
7e27f18c | 387 | |
1da177e4 | 388 | /* mandatory */ |
8cdddc3f | 389 | case RNDIS_OID_GEN_RCV_ERROR: |
340600ab | 390 | if (rndis_debug > 1) |
8cdddc3f | 391 | pr_debug("%s: RNDIS_OID_GEN_RCV_ERROR\n", __func__); |
15b2d2b5 DB |
392 | if (stats) { |
393 | *outbuf = cpu_to_le32(stats->rx_errors); | |
1da177e4 | 394 | retval = 0; |
1da177e4 LT |
395 | } |
396 | break; | |
7e27f18c | 397 | |
1da177e4 | 398 | /* mandatory */ |
8cdddc3f LW |
399 | case RNDIS_OID_GEN_RCV_NO_BUFFER: |
400 | pr_debug("%s: RNDIS_OID_GEN_RCV_NO_BUFFER\n", __func__); | |
15b2d2b5 DB |
401 | if (stats) { |
402 | *outbuf = cpu_to_le32(stats->rx_dropped); | |
1da177e4 | 403 | retval = 0; |
1da177e4 LT |
404 | } |
405 | break; | |
7e27f18c | 406 | |
1da177e4 LT |
407 | /* ieee802.3 OIDs (table 4-3) */ |
408 | ||
409 | /* mandatory */ | |
8cdddc3f | 410 | case RNDIS_OID_802_3_PERMANENT_ADDRESS: |
4cc6c4d5 | 411 | pr_debug("%s: RNDIS_OID_802_3_PERMANENT_ADDRESS\n", __func__); |
83210e59 | 412 | if (params->dev) { |
1da177e4 | 413 | length = ETH_ALEN; |
83210e59 | 414 | memcpy(outbuf, params->host_mac, length); |
1da177e4 | 415 | retval = 0; |
1da177e4 LT |
416 | } |
417 | break; | |
7e27f18c | 418 | |
1da177e4 | 419 | /* mandatory */ |
4cc6c4d5 LW |
420 | case RNDIS_OID_802_3_CURRENT_ADDRESS: |
421 | pr_debug("%s: RNDIS_OID_802_3_CURRENT_ADDRESS\n", __func__); | |
83210e59 | 422 | if (params->dev) { |
1da177e4 | 423 | length = ETH_ALEN; |
83210e59 | 424 | memcpy(outbuf, params->host_mac, length); |
1da177e4 LT |
425 | retval = 0; |
426 | } | |
427 | break; | |
7e27f18c | 428 | |
1da177e4 | 429 | /* mandatory */ |
4cc6c4d5 LW |
430 | case RNDIS_OID_802_3_MULTICAST_LIST: |
431 | pr_debug("%s: RNDIS_OID_802_3_MULTICAST_LIST\n", __func__); | |
1da177e4 | 432 | /* Multicast base address only */ |
a1df4e45 | 433 | *outbuf = cpu_to_le32(0xE0000000); |
1da177e4 LT |
434 | retval = 0; |
435 | break; | |
7e27f18c | 436 | |
1da177e4 | 437 | /* mandatory */ |
4cc6c4d5 LW |
438 | case RNDIS_OID_802_3_MAXIMUM_LIST_SIZE: |
439 | pr_debug("%s: RNDIS_OID_802_3_MAXIMUM_LIST_SIZE\n", __func__); | |
1da177e4 | 440 | /* Multicast base address only */ |
a1df4e45 | 441 | *outbuf = cpu_to_le32(1); |
1da177e4 LT |
442 | retval = 0; |
443 | break; | |
7e27f18c | 444 | |
4cc6c4d5 LW |
445 | case RNDIS_OID_802_3_MAC_OPTIONS: |
446 | pr_debug("%s: RNDIS_OID_802_3_MAC_OPTIONS\n", __func__); | |
6bc2146e QC |
447 | *outbuf = cpu_to_le32(0); |
448 | retval = 0; | |
1da177e4 LT |
449 | break; |
450 | ||
451 | /* ieee802.3 statistics OIDs (table 4-4) */ | |
452 | ||
453 | /* mandatory */ | |
4cc6c4d5 LW |
454 | case RNDIS_OID_802_3_RCV_ERROR_ALIGNMENT: |
455 | pr_debug("%s: RNDIS_OID_802_3_RCV_ERROR_ALIGNMENT\n", __func__); | |
15b2d2b5 DB |
456 | if (stats) { |
457 | *outbuf = cpu_to_le32(stats->rx_frame_errors); | |
1da177e4 LT |
458 | retval = 0; |
459 | } | |
460 | break; | |
7e27f18c | 461 | |
1da177e4 | 462 | /* mandatory */ |
4cc6c4d5 LW |
463 | case RNDIS_OID_802_3_XMIT_ONE_COLLISION: |
464 | pr_debug("%s: RNDIS_OID_802_3_XMIT_ONE_COLLISION\n", __func__); | |
a1df4e45 | 465 | *outbuf = cpu_to_le32(0); |
1da177e4 LT |
466 | retval = 0; |
467 | break; | |
7e27f18c | 468 | |
1da177e4 | 469 | /* mandatory */ |
4cc6c4d5 LW |
470 | case RNDIS_OID_802_3_XMIT_MORE_COLLISIONS: |
471 | pr_debug("%s: RNDIS_OID_802_3_XMIT_MORE_COLLISIONS\n", __func__); | |
a1df4e45 | 472 | *outbuf = cpu_to_le32(0); |
1da177e4 LT |
473 | retval = 0; |
474 | break; | |
7e27f18c | 475 | |
1da177e4 | 476 | default: |
00274921 | 477 | pr_warning("%s: query unknown OID 0x%08X\n", |
441b62c1 | 478 | __func__, OID); |
1da177e4 | 479 | } |
340600ab DB |
480 | if (retval < 0) |
481 | length = 0; | |
7e27f18c | 482 | |
a1df4e45 MD |
483 | resp->InformationBufferLength = cpu_to_le32(length); |
484 | r->length = length + sizeof(*resp); | |
485 | resp->MessageLength = cpu_to_le32(r->length); | |
1da177e4 LT |
486 | return retval; |
487 | } | |
488 | ||
83210e59 AP |
489 | static int gen_ndis_set_resp(struct rndis_params *params, u32 OID, |
490 | u8 *buf, u32 buf_len, rndis_resp_t *r) | |
1da177e4 | 491 | { |
a1df4e45 MD |
492 | rndis_set_cmplt_type *resp; |
493 | int i, retval = -ENOTSUPP; | |
1da177e4 LT |
494 | |
495 | if (!r) | |
496 | return -ENOMEM; | |
a1df4e45 | 497 | resp = (rndis_set_cmplt_type *)r->buf; |
1da177e4 LT |
498 | if (!resp) |
499 | return -ENOMEM; | |
500 | ||
340600ab | 501 | if (buf_len && rndis_debug > 1) { |
33376c1c | 502 | pr_debug("set OID %08x value, len %d:\n", OID, buf_len); |
340600ab | 503 | for (i = 0; i < buf_len; i += 16) { |
33376c1c | 504 | pr_debug("%03d: %08x %08x %08x %08x\n", i, |
a5abdeaf HH |
505 | get_unaligned_le32(&buf[i]), |
506 | get_unaligned_le32(&buf[i + 4]), | |
507 | get_unaligned_le32(&buf[i + 8]), | |
508 | get_unaligned_le32(&buf[i + 12])); | |
340600ab | 509 | } |
1da177e4 LT |
510 | } |
511 | ||
512 | switch (OID) { | |
8cdddc3f | 513 | case RNDIS_OID_GEN_CURRENT_PACKET_FILTER: |
1da177e4 | 514 | |
340600ab DB |
515 | /* these NDIS_PACKET_TYPE_* bitflags are shared with |
516 | * cdc_filter; it's not RNDIS-specific | |
1da177e4 LT |
517 | * NDIS_PACKET_TYPE_x == USB_CDC_PACKET_TYPE_x for x in: |
518 | * PROMISCUOUS, DIRECTED, | |
519 | * MULTICAST, ALL_MULTICAST, BROADCAST | |
520 | */ | |
a5abdeaf | 521 | *params->filter = (u16)get_unaligned_le32(buf); |
8cdddc3f | 522 | pr_debug("%s: RNDIS_OID_GEN_CURRENT_PACKET_FILTER %08x\n", |
441b62c1 | 523 | __func__, *params->filter); |
1da177e4 LT |
524 | |
525 | /* this call has a significant side effect: it's | |
526 | * what makes the packet flow start and stop, like | |
527 | * activating the CDC Ethernet altsetting. | |
528 | */ | |
340600ab DB |
529 | retval = 0; |
530 | if (*params->filter) { | |
1da177e4 LT |
531 | params->state = RNDIS_DATA_INITIALIZED; |
532 | netif_carrier_on(params->dev); | |
533 | if (netif_running(params->dev)) | |
a1df4e45 | 534 | netif_wake_queue(params->dev); |
1da177e4 LT |
535 | } else { |
536 | params->state = RNDIS_INITIALIZED; | |
a1df4e45 MD |
537 | netif_carrier_off(params->dev); |
538 | netif_stop_queue(params->dev); | |
1da177e4 LT |
539 | } |
540 | break; | |
7e27f18c | 541 | |
4cc6c4d5 | 542 | case RNDIS_OID_802_3_MULTICAST_LIST: |
7e27f18c | 543 | /* I think we can ignore this */ |
4cc6c4d5 | 544 | pr_debug("%s: RNDIS_OID_802_3_MULTICAST_LIST\n", __func__); |
1da177e4 LT |
545 | retval = 0; |
546 | break; | |
340600ab | 547 | |
1da177e4 | 548 | default: |
00274921 | 549 | pr_warning("%s: set unknown OID 0x%08X, size %d\n", |
441b62c1 | 550 | __func__, OID, buf_len); |
1da177e4 | 551 | } |
7e27f18c | 552 | |
1da177e4 LT |
553 | return retval; |
554 | } | |
555 | ||
7e27f18c DB |
556 | /* |
557 | * Response Functions | |
1da177e4 LT |
558 | */ |
559 | ||
83210e59 AP |
560 | static int rndis_init_response(struct rndis_params *params, |
561 | rndis_init_msg_type *buf) | |
1da177e4 | 562 | { |
a1df4e45 MD |
563 | rndis_init_cmplt_type *resp; |
564 | rndis_resp_t *r; | |
7e27f18c | 565 | |
15b2d2b5 DB |
566 | if (!params->dev) |
567 | return -ENOTSUPP; | |
7e27f18c | 568 | |
83210e59 | 569 | r = rndis_add_response(params, sizeof(rndis_init_cmplt_type)); |
340600ab DB |
570 | if (!r) |
571 | return -ENOMEM; | |
a1df4e45 | 572 | resp = (rndis_init_cmplt_type *)r->buf; |
7e27f18c | 573 | |
51491167 | 574 | resp->MessageType = cpu_to_le32(RNDIS_MSG_INIT_C); |
a1df4e45 | 575 | resp->MessageLength = cpu_to_le32(52); |
1da177e4 | 576 | resp->RequestID = buf->RequestID; /* Still LE in msg buffer */ |
a1df4e45 MD |
577 | resp->Status = cpu_to_le32(RNDIS_STATUS_SUCCESS); |
578 | resp->MajorVersion = cpu_to_le32(RNDIS_MAJOR_VERSION); | |
579 | resp->MinorVersion = cpu_to_le32(RNDIS_MINOR_VERSION); | |
580 | resp->DeviceFlags = cpu_to_le32(RNDIS_DF_CONNECTIONLESS); | |
581 | resp->Medium = cpu_to_le32(RNDIS_MEDIUM_802_3); | |
582 | resp->MaxPacketsPerTransfer = cpu_to_le32(1); | |
583 | resp->MaxTransferSize = cpu_to_le32( | |
15b2d2b5 | 584 | params->dev->mtu |
a1df4e45 MD |
585 | + sizeof(struct ethhdr) |
586 | + sizeof(struct rndis_packet_msg_type) | |
1da177e4 | 587 | + 22); |
a1df4e45 MD |
588 | resp->PacketAlignmentFactor = cpu_to_le32(0); |
589 | resp->AFListOffset = cpu_to_le32(0); | |
590 | resp->AFListSize = cpu_to_le32(0); | |
7e27f18c | 591 | |
15b2d2b5 | 592 | params->resp_avail(params->v); |
1da177e4 LT |
593 | return 0; |
594 | } | |
595 | ||
83210e59 AP |
596 | static int rndis_query_response(struct rndis_params *params, |
597 | rndis_query_msg_type *buf) | |
1da177e4 LT |
598 | { |
599 | rndis_query_cmplt_type *resp; | |
a1df4e45 | 600 | rndis_resp_t *r; |
7e27f18c | 601 | |
33376c1c | 602 | /* pr_debug("%s: OID = %08X\n", __func__, cpu_to_le32(buf->OID)); */ |
15b2d2b5 DB |
603 | if (!params->dev) |
604 | return -ENOTSUPP; | |
7e27f18c | 605 | |
8763716b ST |
606 | /* |
607 | * we need more memory: | |
608 | * gen_ndis_query_resp expects enough space for | |
609 | * rndis_query_cmplt_type followed by data. | |
610 | * oid_supported_list is the largest data reply | |
1da177e4 | 611 | */ |
83210e59 | 612 | r = rndis_add_response(params, |
a1df4e45 | 613 | sizeof(oid_supported_list) + sizeof(rndis_query_cmplt_type)); |
340600ab DB |
614 | if (!r) |
615 | return -ENOMEM; | |
a1df4e45 | 616 | resp = (rndis_query_cmplt_type *)r->buf; |
7e27f18c | 617 | |
51491167 | 618 | resp->MessageType = cpu_to_le32(RNDIS_MSG_QUERY_C); |
1da177e4 | 619 | resp->RequestID = buf->RequestID; /* Still LE in msg buffer */ |
7e27f18c | 620 | |
83210e59 | 621 | if (gen_ndis_query_resp(params, le32_to_cpu(buf->OID), |
340600ab | 622 | le32_to_cpu(buf->InformationBufferOffset) |
a1df4e45 | 623 | + 8 + (u8 *)buf, |
340600ab DB |
624 | le32_to_cpu(buf->InformationBufferLength), |
625 | r)) { | |
1da177e4 | 626 | /* OID not supported */ |
a1df4e45 MD |
627 | resp->Status = cpu_to_le32(RNDIS_STATUS_NOT_SUPPORTED); |
628 | resp->MessageLength = cpu_to_le32(sizeof *resp); | |
629 | resp->InformationBufferLength = cpu_to_le32(0); | |
630 | resp->InformationBufferOffset = cpu_to_le32(0); | |
1da177e4 | 631 | } else |
a1df4e45 | 632 | resp->Status = cpu_to_le32(RNDIS_STATUS_SUCCESS); |
7e27f18c | 633 | |
15b2d2b5 | 634 | params->resp_avail(params->v); |
1da177e4 LT |
635 | return 0; |
636 | } | |
637 | ||
83210e59 AP |
638 | static int rndis_set_response(struct rndis_params *params, |
639 | rndis_set_msg_type *buf) | |
1da177e4 | 640 | { |
a1df4e45 MD |
641 | u32 BufLength, BufOffset; |
642 | rndis_set_cmplt_type *resp; | |
643 | rndis_resp_t *r; | |
7e27f18c | 644 | |
83210e59 | 645 | r = rndis_add_response(params, sizeof(rndis_set_cmplt_type)); |
340600ab DB |
646 | if (!r) |
647 | return -ENOMEM; | |
a1df4e45 | 648 | resp = (rndis_set_cmplt_type *)r->buf; |
1da177e4 | 649 | |
a1df4e45 MD |
650 | BufLength = le32_to_cpu(buf->InformationBufferLength); |
651 | BufOffset = le32_to_cpu(buf->InformationBufferOffset); | |
1da177e4 | 652 | |
15b2d2b5 | 653 | #ifdef VERBOSE_DEBUG |
33376c1c DB |
654 | pr_debug("%s: Length: %d\n", __func__, BufLength); |
655 | pr_debug("%s: Offset: %d\n", __func__, BufOffset); | |
656 | pr_debug("%s: InfoBuffer: ", __func__); | |
7e27f18c | 657 | |
1da177e4 | 658 | for (i = 0; i < BufLength; i++) { |
33376c1c | 659 | pr_debug("%02x ", *(((u8 *) buf) + i + 8 + BufOffset)); |
1da177e4 | 660 | } |
7e27f18c | 661 | |
33376c1c | 662 | pr_debug("\n"); |
1da177e4 | 663 | #endif |
7e27f18c | 664 | |
51491167 | 665 | resp->MessageType = cpu_to_le32(RNDIS_MSG_SET_C); |
a1df4e45 | 666 | resp->MessageLength = cpu_to_le32(16); |
1da177e4 | 667 | resp->RequestID = buf->RequestID; /* Still LE in msg buffer */ |
83210e59 | 668 | if (gen_ndis_set_resp(params, le32_to_cpu(buf->OID), |
a1df4e45 MD |
669 | ((u8 *)buf) + 8 + BufOffset, BufLength, r)) |
670 | resp->Status = cpu_to_le32(RNDIS_STATUS_NOT_SUPPORTED); | |
7e27f18c | 671 | else |
a1df4e45 | 672 | resp->Status = cpu_to_le32(RNDIS_STATUS_SUCCESS); |
7e27f18c | 673 | |
15b2d2b5 | 674 | params->resp_avail(params->v); |
1da177e4 LT |
675 | return 0; |
676 | } | |
677 | ||
83210e59 AP |
678 | static int rndis_reset_response(struct rndis_params *params, |
679 | rndis_reset_msg_type *buf) | |
1da177e4 | 680 | { |
a1df4e45 MD |
681 | rndis_reset_cmplt_type *resp; |
682 | rndis_resp_t *r; | |
207707d8 XL |
683 | u8 *xbuf; |
684 | u32 length; | |
685 | ||
686 | /* drain the response queue */ | |
687 | while ((xbuf = rndis_get_next_response(params, &length))) | |
688 | rndis_free_response(params, xbuf); | |
7e27f18c | 689 | |
83210e59 | 690 | r = rndis_add_response(params, sizeof(rndis_reset_cmplt_type)); |
340600ab DB |
691 | if (!r) |
692 | return -ENOMEM; | |
a1df4e45 | 693 | resp = (rndis_reset_cmplt_type *)r->buf; |
7e27f18c | 694 | |
51491167 | 695 | resp->MessageType = cpu_to_le32(RNDIS_MSG_RESET_C); |
a1df4e45 MD |
696 | resp->MessageLength = cpu_to_le32(16); |
697 | resp->Status = cpu_to_le32(RNDIS_STATUS_SUCCESS); | |
1da177e4 | 698 | /* resent information */ |
a1df4e45 | 699 | resp->AddressingReset = cpu_to_le32(1); |
7e27f18c | 700 | |
15b2d2b5 | 701 | params->resp_avail(params->v); |
1da177e4 LT |
702 | return 0; |
703 | } | |
704 | ||
83210e59 | 705 | static int rndis_keepalive_response(struct rndis_params *params, |
a1df4e45 | 706 | rndis_keepalive_msg_type *buf) |
1da177e4 | 707 | { |
a1df4e45 MD |
708 | rndis_keepalive_cmplt_type *resp; |
709 | rndis_resp_t *r; | |
1da177e4 LT |
710 | |
711 | /* host "should" check only in RNDIS_DATA_INITIALIZED state */ | |
712 | ||
83210e59 | 713 | r = rndis_add_response(params, sizeof(rndis_keepalive_cmplt_type)); |
340600ab DB |
714 | if (!r) |
715 | return -ENOMEM; | |
a1df4e45 | 716 | resp = (rndis_keepalive_cmplt_type *)r->buf; |
7e27f18c | 717 | |
51491167 | 718 | resp->MessageType = cpu_to_le32(RNDIS_MSG_KEEPALIVE_C); |
a1df4e45 | 719 | resp->MessageLength = cpu_to_le32(16); |
1da177e4 | 720 | resp->RequestID = buf->RequestID; /* Still LE in msg buffer */ |
a1df4e45 | 721 | resp->Status = cpu_to_le32(RNDIS_STATUS_SUCCESS); |
7e27f18c | 722 | |
15b2d2b5 | 723 | params->resp_avail(params->v); |
1da177e4 LT |
724 | return 0; |
725 | } | |
726 | ||
727 | ||
7e27f18c DB |
728 | /* |
729 | * Device to Host Comunication | |
1da177e4 | 730 | */ |
83210e59 | 731 | static int rndis_indicate_status_msg(struct rndis_params *params, u32 status) |
1da177e4 | 732 | { |
a1df4e45 MD |
733 | rndis_indicate_status_msg_type *resp; |
734 | rndis_resp_t *r; | |
7e27f18c | 735 | |
15b2d2b5 | 736 | if (params->state == RNDIS_UNINITIALIZED) |
7e27f18c DB |
737 | return -ENOTSUPP; |
738 | ||
83210e59 | 739 | r = rndis_add_response(params, sizeof(rndis_indicate_status_msg_type)); |
340600ab DB |
740 | if (!r) |
741 | return -ENOMEM; | |
a1df4e45 | 742 | resp = (rndis_indicate_status_msg_type *)r->buf; |
7e27f18c | 743 | |
51491167 | 744 | resp->MessageType = cpu_to_le32(RNDIS_MSG_INDICATE); |
a1df4e45 MD |
745 | resp->MessageLength = cpu_to_le32(20); |
746 | resp->Status = cpu_to_le32(status); | |
747 | resp->StatusBufferLength = cpu_to_le32(0); | |
748 | resp->StatusBufferOffset = cpu_to_le32(0); | |
7e27f18c | 749 | |
15b2d2b5 | 750 | params->resp_avail(params->v); |
1da177e4 LT |
751 | return 0; |
752 | } | |
753 | ||
83210e59 | 754 | int rndis_signal_connect(struct rndis_params *params) |
1da177e4 | 755 | { |
83210e59 AP |
756 | params->media_state = RNDIS_MEDIA_STATE_CONNECTED; |
757 | return rndis_indicate_status_msg(params, RNDIS_STATUS_MEDIA_CONNECT); | |
1da177e4 | 758 | } |
0700faaf | 759 | EXPORT_SYMBOL_GPL(rndis_signal_connect); |
1da177e4 | 760 | |
83210e59 | 761 | int rndis_signal_disconnect(struct rndis_params *params) |
1da177e4 | 762 | { |
83210e59 AP |
763 | params->media_state = RNDIS_MEDIA_STATE_DISCONNECTED; |
764 | return rndis_indicate_status_msg(params, RNDIS_STATUS_MEDIA_DISCONNECT); | |
1da177e4 | 765 | } |
0700faaf | 766 | EXPORT_SYMBOL_GPL(rndis_signal_disconnect); |
1da177e4 | 767 | |
83210e59 | 768 | void rndis_uninit(struct rndis_params *params) |
340600ab | 769 | { |
486e2df6 DB |
770 | u8 *buf; |
771 | u32 length; | |
772 | ||
83210e59 | 773 | if (!params) |
340600ab | 774 | return; |
83210e59 | 775 | params->state = RNDIS_UNINITIALIZED; |
486e2df6 DB |
776 | |
777 | /* drain the response queue */ | |
83210e59 AP |
778 | while ((buf = rndis_get_next_response(params, &length))) |
779 | rndis_free_response(params, buf); | |
340600ab | 780 | } |
0700faaf | 781 | EXPORT_SYMBOL_GPL(rndis_uninit); |
340600ab | 782 | |
83210e59 | 783 | void rndis_set_host_mac(struct rndis_params *params, const u8 *addr) |
1da177e4 | 784 | { |
83210e59 | 785 | params->host_mac = addr; |
1da177e4 | 786 | } |
0700faaf | 787 | EXPORT_SYMBOL_GPL(rndis_set_host_mac); |
1da177e4 | 788 | |
7e27f18c DB |
789 | /* |
790 | * Message Parser | |
1da177e4 | 791 | */ |
83210e59 | 792 | int rndis_msg_parser(struct rndis_params *params, u8 *buf) |
1da177e4 LT |
793 | { |
794 | u32 MsgType, MsgLength; | |
795 | __le32 *tmp; | |
7e27f18c | 796 | |
1da177e4 LT |
797 | if (!buf) |
798 | return -ENOMEM; | |
7e27f18c | 799 | |
a1df4e45 | 800 | tmp = (__le32 *)buf; |
a5abdeaf HH |
801 | MsgType = get_unaligned_le32(tmp++); |
802 | MsgLength = get_unaligned_le32(tmp++); | |
7e27f18c | 803 | |
83210e59 | 804 | if (!params) |
1da177e4 | 805 | return -ENOTSUPP; |
7e27f18c | 806 | |
340600ab DB |
807 | /* NOTE: RNDIS is *EXTREMELY* chatty ... Windows constantly polls for |
808 | * rx/tx statistics and link status, in addition to KEEPALIVE traffic | |
809 | * and normal HC level polling to see if there's any IN traffic. | |
810 | */ | |
811 | ||
1da177e4 | 812 | /* For USB: responses may take up to 10 seconds */ |
340600ab | 813 | switch (MsgType) { |
51491167 LW |
814 | case RNDIS_MSG_INIT: |
815 | pr_debug("%s: RNDIS_MSG_INIT\n", | |
a1df4e45 | 816 | __func__); |
1da177e4 | 817 | params->state = RNDIS_INITIALIZED; |
83210e59 | 818 | return rndis_init_response(params, (rndis_init_msg_type *)buf); |
7e27f18c | 819 | |
51491167 LW |
820 | case RNDIS_MSG_HALT: |
821 | pr_debug("%s: RNDIS_MSG_HALT\n", | |
a1df4e45 | 822 | __func__); |
1da177e4 LT |
823 | params->state = RNDIS_UNINITIALIZED; |
824 | if (params->dev) { | |
a1df4e45 MD |
825 | netif_carrier_off(params->dev); |
826 | netif_stop_queue(params->dev); | |
1da177e4 LT |
827 | } |
828 | return 0; | |
7e27f18c | 829 | |
51491167 | 830 | case RNDIS_MSG_QUERY: |
83210e59 | 831 | return rndis_query_response(params, |
a1df4e45 | 832 | (rndis_query_msg_type *)buf); |
7e27f18c | 833 | |
51491167 | 834 | case RNDIS_MSG_SET: |
83210e59 | 835 | return rndis_set_response(params, (rndis_set_msg_type *)buf); |
7e27f18c | 836 | |
51491167 LW |
837 | case RNDIS_MSG_RESET: |
838 | pr_debug("%s: RNDIS_MSG_RESET\n", | |
a1df4e45 | 839 | __func__); |
83210e59 | 840 | return rndis_reset_response(params, |
a1df4e45 | 841 | (rndis_reset_msg_type *)buf); |
1da177e4 | 842 | |
51491167 | 843 | case RNDIS_MSG_KEEPALIVE: |
1da177e4 | 844 | /* For USB: host does this every 5 seconds */ |
340600ab | 845 | if (rndis_debug > 1) |
51491167 | 846 | pr_debug("%s: RNDIS_MSG_KEEPALIVE\n", |
a1df4e45 | 847 | __func__); |
83210e59 | 848 | return rndis_keepalive_response(params, |
7e27f18c | 849 | (rndis_keepalive_msg_type *) |
1da177e4 | 850 | buf); |
7e27f18c DB |
851 | |
852 | default: | |
1da177e4 LT |
853 | /* At least Windows XP emits some undefined RNDIS messages. |
854 | * In one case those messages seemed to relate to the host | |
855 | * suspending itself. | |
856 | */ | |
00274921 | 857 | pr_warning("%s: unknown RNDIS message 0x%08X len %d\n", |
a1df4e45 | 858 | __func__, MsgType, MsgLength); |
d3091cff AS |
859 | print_hex_dump_bytes(__func__, DUMP_PREFIX_OFFSET, |
860 | buf, MsgLength); | |
1da177e4 LT |
861 | break; |
862 | } | |
7e27f18c | 863 | |
1da177e4 LT |
864 | return -ENOTSUPP; |
865 | } | |
0700faaf | 866 | EXPORT_SYMBOL_GPL(rndis_msg_parser); |
1da177e4 | 867 | |
d6d22922 AP |
868 | static inline int rndis_get_nr(void) |
869 | { | |
870 | return ida_simple_get(&rndis_ida, 0, 0, GFP_KERNEL); | |
871 | } | |
872 | ||
873 | static inline void rndis_put_nr(int nr) | |
874 | { | |
875 | ida_simple_remove(&rndis_ida, nr); | |
876 | } | |
877 | ||
83210e59 | 878 | struct rndis_params *rndis_register(void (*resp_avail)(void *v), void *v) |
1da177e4 | 879 | { |
d6d22922 | 880 | struct rndis_params *params; |
81dff869 | 881 | int i; |
7e27f18c | 882 | |
15b2d2b5 | 883 | if (!resp_avail) |
83210e59 | 884 | return ERR_PTR(-EINVAL); |
15b2d2b5 | 885 | |
d6d22922 AP |
886 | i = rndis_get_nr(); |
887 | if (i < 0) { | |
888 | pr_debug("failed\n"); | |
889 | ||
890 | return ERR_PTR(-ENODEV); | |
891 | } | |
892 | ||
893 | params = kzalloc(sizeof(*params), GFP_KERNEL); | |
894 | if (!params) { | |
895 | rndis_put_nr(i); | |
896 | ||
897 | return ERR_PTR(-ENOMEM); | |
898 | } | |
899 | ||
900 | #ifdef CONFIG_USB_GADGET_DEBUG_FILES | |
901 | { | |
902 | struct proc_dir_entry *proc_entry; | |
903 | char name[20]; | |
904 | ||
905 | sprintf(name, NAME_TEMPLATE, i); | |
906 | proc_entry = proc_create_data(name, 0660, NULL, | |
907 | &rndis_proc_fops, params); | |
908 | if (!proc_entry) { | |
909 | kfree(params); | |
910 | rndis_put_nr(i); | |
911 | ||
912 | return ERR_PTR(-EIO); | |
1da177e4 LT |
913 | } |
914 | } | |
d6d22922 | 915 | #endif |
7e27f18c | 916 | |
d6d22922 AP |
917 | params->confignr = i; |
918 | params->used = 1; | |
919 | params->state = RNDIS_UNINITIALIZED; | |
920 | params->media_state = RNDIS_MEDIA_STATE_DISCONNECTED; | |
921 | params->resp_avail = resp_avail; | |
922 | params->v = v; | |
f6281af9 | 923 | INIT_LIST_HEAD(¶ms->resp_queue); |
d6d22922 AP |
924 | pr_debug("%s: configNr = %d\n", __func__, i); |
925 | ||
926 | return params; | |
1da177e4 | 927 | } |
0700faaf | 928 | EXPORT_SYMBOL_GPL(rndis_register); |
1da177e4 | 929 | |
83210e59 | 930 | void rndis_deregister(struct rndis_params *params) |
1da177e4 | 931 | { |
81dff869 | 932 | int i; |
d6d22922 | 933 | |
a1df4e45 | 934 | pr_debug("%s:\n", __func__); |
7e27f18c | 935 | |
83210e59 AP |
936 | if (!params) |
937 | return; | |
d6d22922 AP |
938 | |
939 | i = params->confignr; | |
940 | ||
941 | #ifdef CONFIG_USB_GADGET_DEBUG_FILES | |
942 | { | |
d6d22922 AP |
943 | char name[20]; |
944 | ||
945 | sprintf(name, NAME_TEMPLATE, i); | |
946 | remove_proc_entry(name, NULL); | |
947 | } | |
948 | #endif | |
949 | ||
950 | kfree(params); | |
951 | rndis_put_nr(i); | |
1da177e4 | 952 | } |
0700faaf | 953 | EXPORT_SYMBOL_GPL(rndis_deregister); |
83210e59 AP |
954 | int rndis_set_param_dev(struct rndis_params *params, struct net_device *dev, |
955 | u16 *cdc_filter) | |
1da177e4 | 956 | { |
33376c1c | 957 | pr_debug("%s:\n", __func__); |
15b2d2b5 DB |
958 | if (!dev) |
959 | return -EINVAL; | |
83210e59 AP |
960 | if (!params) |
961 | return -1; | |
7e27f18c | 962 | |
83210e59 AP |
963 | params->dev = dev; |
964 | params->filter = cdc_filter; | |
7e27f18c | 965 | |
1da177e4 LT |
966 | return 0; |
967 | } | |
0700faaf | 968 | EXPORT_SYMBOL_GPL(rndis_set_param_dev); |
1da177e4 | 969 | |
83210e59 AP |
970 | int rndis_set_param_vendor(struct rndis_params *params, u32 vendorID, |
971 | const char *vendorDescr) | |
1da177e4 | 972 | { |
33376c1c | 973 | pr_debug("%s:\n", __func__); |
1da177e4 | 974 | if (!vendorDescr) return -1; |
83210e59 AP |
975 | if (!params) |
976 | return -1; | |
7e27f18c | 977 | |
83210e59 AP |
978 | params->vendorID = vendorID; |
979 | params->vendorDescr = vendorDescr; | |
7e27f18c | 980 | |
1da177e4 LT |
981 | return 0; |
982 | } | |
0700faaf | 983 | EXPORT_SYMBOL_GPL(rndis_set_param_vendor); |
1da177e4 | 984 | |
83210e59 | 985 | int rndis_set_param_medium(struct rndis_params *params, u32 medium, u32 speed) |
1da177e4 | 986 | { |
33376c1c | 987 | pr_debug("%s: %u %u\n", __func__, medium, speed); |
83210e59 AP |
988 | if (!params) |
989 | return -1; | |
7e27f18c | 990 | |
83210e59 AP |
991 | params->medium = medium; |
992 | params->speed = speed; | |
7e27f18c | 993 | |
1da177e4 LT |
994 | return 0; |
995 | } | |
0700faaf | 996 | EXPORT_SYMBOL_GPL(rndis_set_param_medium); |
1da177e4 | 997 | |
a1df4e45 | 998 | void rndis_add_hdr(struct sk_buff *skb) |
1da177e4 | 999 | { |
a1df4e45 | 1000 | struct rndis_packet_msg_type *header; |
1da177e4 LT |
1001 | |
1002 | if (!skb) | |
1003 | return; | |
a1df4e45 MD |
1004 | header = (void *)skb_push(skb, sizeof(*header)); |
1005 | memset(header, 0, sizeof *header); | |
51491167 | 1006 | header->MessageType = cpu_to_le32(RNDIS_MSG_PACKET); |
1da177e4 | 1007 | header->MessageLength = cpu_to_le32(skb->len); |
a1df4e45 MD |
1008 | header->DataOffset = cpu_to_le32(36); |
1009 | header->DataLength = cpu_to_le32(skb->len - sizeof(*header)); | |
1da177e4 | 1010 | } |
0700faaf | 1011 | EXPORT_SYMBOL_GPL(rndis_add_hdr); |
1da177e4 | 1012 | |
83210e59 | 1013 | void rndis_free_response(struct rndis_params *params, u8 *buf) |
1da177e4 | 1014 | { |
f6281af9 | 1015 | rndis_resp_t *r, *n; |
7e27f18c | 1016 | |
f6281af9 | 1017 | list_for_each_entry_safe(r, n, ¶ms->resp_queue, list) { |
1c17a353 | 1018 | if (r->buf == buf) { |
a1df4e45 MD |
1019 | list_del(&r->list); |
1020 | kfree(r); | |
1da177e4 LT |
1021 | } |
1022 | } | |
1023 | } | |
0700faaf | 1024 | EXPORT_SYMBOL_GPL(rndis_free_response); |
1da177e4 | 1025 | |
83210e59 | 1026 | u8 *rndis_get_next_response(struct rndis_params *params, u32 *length) |
1da177e4 | 1027 | { |
f6281af9 | 1028 | rndis_resp_t *r, *n; |
7e27f18c | 1029 | |
1da177e4 | 1030 | if (!length) return NULL; |
7e27f18c | 1031 | |
f6281af9 | 1032 | list_for_each_entry_safe(r, n, ¶ms->resp_queue, list) { |
1da177e4 LT |
1033 | if (!r->send) { |
1034 | r->send = 1; | |
1035 | *length = r->length; | |
1036 | return r->buf; | |
1037 | } | |
1038 | } | |
7e27f18c | 1039 | |
1da177e4 LT |
1040 | return NULL; |
1041 | } | |
0700faaf | 1042 | EXPORT_SYMBOL_GPL(rndis_get_next_response); |
1da177e4 | 1043 | |
83210e59 | 1044 | static rndis_resp_t *rndis_add_response(struct rndis_params *params, u32 length) |
1da177e4 | 1045 | { |
a1df4e45 | 1046 | rndis_resp_t *r; |
7e27f18c | 1047 | |
a1df4e45 MD |
1048 | /* NOTE: this gets copied into ether.c USB_BUFSIZ bytes ... */ |
1049 | r = kmalloc(sizeof(rndis_resp_t) + length, GFP_ATOMIC); | |
1da177e4 | 1050 | if (!r) return NULL; |
7e27f18c | 1051 | |
a1df4e45 | 1052 | r->buf = (u8 *)(r + 1); |
1da177e4 LT |
1053 | r->length = length; |
1054 | r->send = 0; | |
7e27f18c | 1055 | |
f6281af9 | 1056 | list_add_tail(&r->list, ¶ms->resp_queue); |
1da177e4 LT |
1057 | return r; |
1058 | } | |
1059 | ||
9b39e9dd BN |
1060 | int rndis_rm_hdr(struct gether *port, |
1061 | struct sk_buff *skb, | |
1062 | struct sk_buff_head *list) | |
1da177e4 | 1063 | { |
6cdee106 | 1064 | /* tmp points to a struct rndis_packet_msg_type */ |
a1df4e45 | 1065 | __le32 *tmp = (void *)skb->data; |
1da177e4 | 1066 | |
6cdee106 | 1067 | /* MessageType, MessageLength */ |
51491167 | 1068 | if (cpu_to_le32(RNDIS_MSG_PACKET) |
9b39e9dd BN |
1069 | != get_unaligned(tmp++)) { |
1070 | dev_kfree_skb_any(skb); | |
6cdee106 | 1071 | return -EINVAL; |
9b39e9dd | 1072 | } |
6cdee106 DB |
1073 | tmp++; |
1074 | ||
1075 | /* DataOffset, DataLength */ | |
9b39e9dd BN |
1076 | if (!skb_pull(skb, get_unaligned_le32(tmp++) + 8)) { |
1077 | dev_kfree_skb_any(skb); | |
6cdee106 | 1078 | return -EOVERFLOW; |
9b39e9dd | 1079 | } |
a5abdeaf | 1080 | skb_trim(skb, get_unaligned_le32(tmp++)); |
1da177e4 | 1081 | |
9b39e9dd | 1082 | skb_queue_tail(list, skb); |
1da177e4 LT |
1083 | return 0; |
1084 | } | |
0700faaf | 1085 | EXPORT_SYMBOL_GPL(rndis_rm_hdr); |
1da177e4 | 1086 | |
a1df4e45 | 1087 | #ifdef CONFIG_USB_GADGET_DEBUG_FILES |
1da177e4 | 1088 | |
e184d5fc | 1089 | static int rndis_proc_show(struct seq_file *m, void *v) |
1da177e4 | 1090 | { |
e184d5fc | 1091 | rndis_params *param = m->private; |
7e27f18c | 1092 | |
e184d5fc | 1093 | seq_printf(m, |
1da177e4 LT |
1094 | "Config Nr. %d\n" |
1095 | "used : %s\n" | |
1096 | "state : %s\n" | |
1097 | "medium : 0x%08X\n" | |
1098 | "speed : %d\n" | |
1099 | "cable : %s\n" | |
1100 | "vendor ID : 0x%08X\n" | |
7e27f18c DB |
1101 | "vendor : %s\n", |
1102 | param->confignr, (param->used) ? "y" : "n", | |
1da177e4 LT |
1103 | ({ char *s = "?"; |
1104 | switch (param->state) { | |
1105 | case RNDIS_UNINITIALIZED: | |
1106 | s = "RNDIS_UNINITIALIZED"; break; | |
1107 | case RNDIS_INITIALIZED: | |
1108 | s = "RNDIS_INITIALIZED"; break; | |
1109 | case RNDIS_DATA_INITIALIZED: | |
1110 | s = "RNDIS_DATA_INITIALIZED"; break; | |
2b84f92b | 1111 | } s; }), |
7e27f18c DB |
1112 | param->medium, |
1113 | (param->media_state) ? 0 : param->speed*100, | |
1da177e4 | 1114 | (param->media_state) ? "disconnected" : "connected", |
7e27f18c | 1115 | param->vendorID, param->vendorDescr); |
e184d5fc | 1116 | return 0; |
1da177e4 LT |
1117 | } |
1118 | ||
e184d5fc | 1119 | static ssize_t rndis_proc_write(struct file *file, const char __user *buffer, |
a1df4e45 | 1120 | size_t count, loff_t *ppos) |
1da177e4 | 1121 | { |
d9dda78b | 1122 | rndis_params *p = PDE_DATA(file_inode(file)); |
1da177e4 LT |
1123 | u32 speed = 0; |
1124 | int i, fl_speed = 0; | |
7e27f18c | 1125 | |
1da177e4 LT |
1126 | for (i = 0; i < count; i++) { |
1127 | char c; | |
1128 | if (get_user(c, buffer)) | |
1129 | return -EFAULT; | |
1130 | switch (c) { | |
1131 | case '0': | |
1132 | case '1': | |
1133 | case '2': | |
1134 | case '3': | |
1135 | case '4': | |
1136 | case '5': | |
1137 | case '6': | |
1138 | case '7': | |
1139 | case '8': | |
1140 | case '9': | |
1141 | fl_speed = 1; | |
a1df4e45 | 1142 | speed = speed * 10 + c - '0'; |
1da177e4 LT |
1143 | break; |
1144 | case 'C': | |
1145 | case 'c': | |
868055fd | 1146 | rndis_signal_connect(p); |
1da177e4 LT |
1147 | break; |
1148 | case 'D': | |
1149 | case 'd': | |
868055fd | 1150 | rndis_signal_disconnect(p); |
1da177e4 | 1151 | break; |
7e27f18c | 1152 | default: |
1da177e4 | 1153 | if (fl_speed) p->speed = speed; |
33376c1c | 1154 | else pr_debug("%c is not valid\n", c); |
1da177e4 LT |
1155 | break; |
1156 | } | |
7e27f18c | 1157 | |
1da177e4 LT |
1158 | buffer++; |
1159 | } | |
7e27f18c | 1160 | |
1da177e4 LT |
1161 | return count; |
1162 | } | |
1163 | ||
e184d5fc AD |
1164 | static int rndis_proc_open(struct inode *inode, struct file *file) |
1165 | { | |
d9dda78b | 1166 | return single_open(file, rndis_proc_show, PDE_DATA(inode)); |
e184d5fc AD |
1167 | } |
1168 | ||
1169 | static const struct file_operations rndis_proc_fops = { | |
1170 | .owner = THIS_MODULE, | |
1171 | .open = rndis_proc_open, | |
1172 | .read = seq_read, | |
1173 | .llseek = seq_lseek, | |
1174 | .release = single_release, | |
1175 | .write = rndis_proc_write, | |
1176 | }; | |
1177 | ||
a1df4e45 | 1178 | #define NAME_TEMPLATE "driver/rndis-%03d" |
1da177e4 | 1179 | |
a1df4e45 | 1180 | #endif /* CONFIG_USB_GADGET_DEBUG_FILES */ |