David Brownell | 64e0491 | 2005-08-31 09:54:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Host Side support for RNDIS Networking Links |
| 3 | * Copyright (C) 2005 by David Brownell |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 18 | */ |
| 19 | |
| 20 | // #define DEBUG // error path messages, extra info |
| 21 | // #define VERBOSE // more; success messages |
| 22 | |
David Brownell | 64e0491 | 2005-08-31 09:54:36 -0700 | [diff] [blame] | 23 | #include <linux/module.h> |
David Brownell | 64e0491 | 2005-08-31 09:54:36 -0700 | [diff] [blame] | 24 | #include <linux/init.h> |
| 25 | #include <linux/netdevice.h> |
| 26 | #include <linux/etherdevice.h> |
| 27 | #include <linux/ethtool.h> |
| 28 | #include <linux/workqueue.h> |
| 29 | #include <linux/mii.h> |
| 30 | #include <linux/usb.h> |
David Brownell | a8c28f2 | 2006-06-13 09:57:47 -0700 | [diff] [blame] | 31 | #include <linux/usb/cdc.h> |
David Brownell | 64e0491 | 2005-08-31 09:54:36 -0700 | [diff] [blame] | 32 | |
| 33 | #include "usbnet.h" |
| 34 | |
| 35 | |
| 36 | /* |
| 37 | * RNDIS is NDIS remoted over USB. It's a MSFT variant of CDC ACM ... of |
| 38 | * course ACM was intended for modems, not Ethernet links! USB's standard |
| 39 | * for Ethernet links is "CDC Ethernet", which is significantly simpler. |
David Brownell | 51400f1 | 2006-04-02 10:19:08 -0800 | [diff] [blame] | 40 | * |
| 41 | * NOTE that Microsoft's "RNDIS 1.0" specification is incomplete. Issues |
| 42 | * include: |
| 43 | * - Power management in particular relies on information that's scattered |
| 44 | * through other documentation, and which is incomplete or incorrect even |
| 45 | * there. |
| 46 | * - There are various undocumented protocol requirements, such as the |
| 47 | * need to send unused garbage in control-OUT messages. |
| 48 | * - In some cases, MS-Windows will emit undocumented requests; this |
| 49 | * matters more to peripheral implementations than host ones. |
| 50 | * |
Ole Andre Vadla Ravnas | ad55d71 | 2006-12-14 16:01:28 -0800 | [diff] [blame] | 51 | * Moreover there's a no-open-specs variant of RNDIS called "ActiveSync". |
| 52 | * |
David Brownell | 51400f1 | 2006-04-02 10:19:08 -0800 | [diff] [blame] | 53 | * For these reasons and others, ** USE OF RNDIS IS STRONGLY DISCOURAGED ** in |
| 54 | * favor of such non-proprietary alternatives as CDC Ethernet or the newer (and |
| 55 | * currently rare) "Ethernet Emulation Model" (EEM). |
David Brownell | 64e0491 | 2005-08-31 09:54:36 -0700 | [diff] [blame] | 56 | */ |
| 57 | |
| 58 | /* |
| 59 | * CONTROL uses CDC "encapsulated commands" with funky notifications. |
| 60 | * - control-out: SEND_ENCAPSULATED |
| 61 | * - interrupt-in: RESPONSE_AVAILABLE |
| 62 | * - control-in: GET_ENCAPSULATED |
| 63 | * |
| 64 | * We'll try to ignore the RESPONSE_AVAILABLE notifications. |
Ole Andre Vadla Ravnas | ad55d71 | 2006-12-14 16:01:28 -0800 | [diff] [blame] | 65 | * |
| 66 | * REVISIT some RNDIS implementations seem to have curious issues still |
| 67 | * to be resolved. |
David Brownell | 64e0491 | 2005-08-31 09:54:36 -0700 | [diff] [blame] | 68 | */ |
| 69 | struct rndis_msg_hdr { |
| 70 | __le32 msg_type; /* RNDIS_MSG_* */ |
| 71 | __le32 msg_len; |
| 72 | // followed by data that varies between messages |
| 73 | __le32 request_id; |
| 74 | __le32 status; |
| 75 | // ... and more |
| 76 | } __attribute__ ((packed)); |
| 77 | |
Ole Andre Vadla Ravnas | ad55d71 | 2006-12-14 16:01:28 -0800 | [diff] [blame] | 78 | /* MS-Windows uses this strange size, but RNDIS spec says 1024 minimum */ |
| 79 | #define CONTROL_BUFFER_SIZE 1025 |
| 80 | |
| 81 | /* RNDIS defines an (absurdly huge) 10 second control timeout, |
| 82 | * but ActiveSync seems to use a more usual 5 second timeout |
| 83 | * (which matches the USB 2.0 spec). |
| 84 | */ |
| 85 | #define RNDIS_CONTROL_TIMEOUT_MS (5 * 1000) |
David Brownell | 64e0491 | 2005-08-31 09:54:36 -0700 | [diff] [blame] | 86 | |
| 87 | |
| 88 | #define ccpu2 __constant_cpu_to_le32 |
| 89 | |
| 90 | #define RNDIS_MSG_COMPLETION ccpu2(0x80000000) |
| 91 | |
| 92 | /* codes for "msg_type" field of rndis messages; |
| 93 | * only the data channel uses packet messages (maybe batched); |
| 94 | * everything else goes on the control channel. |
| 95 | */ |
| 96 | #define RNDIS_MSG_PACKET ccpu2(0x00000001) /* 1-N packets */ |
| 97 | #define RNDIS_MSG_INIT ccpu2(0x00000002) |
David Brownell | 51400f1 | 2006-04-02 10:19:08 -0800 | [diff] [blame] | 98 | #define RNDIS_MSG_INIT_C (RNDIS_MSG_INIT|RNDIS_MSG_COMPLETION) |
David Brownell | 64e0491 | 2005-08-31 09:54:36 -0700 | [diff] [blame] | 99 | #define RNDIS_MSG_HALT ccpu2(0x00000003) |
| 100 | #define RNDIS_MSG_QUERY ccpu2(0x00000004) |
David Brownell | 51400f1 | 2006-04-02 10:19:08 -0800 | [diff] [blame] | 101 | #define RNDIS_MSG_QUERY_C (RNDIS_MSG_QUERY|RNDIS_MSG_COMPLETION) |
David Brownell | 64e0491 | 2005-08-31 09:54:36 -0700 | [diff] [blame] | 102 | #define RNDIS_MSG_SET ccpu2(0x00000005) |
David Brownell | 51400f1 | 2006-04-02 10:19:08 -0800 | [diff] [blame] | 103 | #define RNDIS_MSG_SET_C (RNDIS_MSG_SET|RNDIS_MSG_COMPLETION) |
David Brownell | 64e0491 | 2005-08-31 09:54:36 -0700 | [diff] [blame] | 104 | #define RNDIS_MSG_RESET ccpu2(0x00000006) |
David Brownell | 51400f1 | 2006-04-02 10:19:08 -0800 | [diff] [blame] | 105 | #define RNDIS_MSG_RESET_C (RNDIS_MSG_RESET|RNDIS_MSG_COMPLETION) |
David Brownell | 64e0491 | 2005-08-31 09:54:36 -0700 | [diff] [blame] | 106 | #define RNDIS_MSG_INDICATE ccpu2(0x00000007) |
| 107 | #define RNDIS_MSG_KEEPALIVE ccpu2(0x00000008) |
David Brownell | 51400f1 | 2006-04-02 10:19:08 -0800 | [diff] [blame] | 108 | #define RNDIS_MSG_KEEPALIVE_C (RNDIS_MSG_KEEPALIVE|RNDIS_MSG_COMPLETION) |
David Brownell | 64e0491 | 2005-08-31 09:54:36 -0700 | [diff] [blame] | 109 | |
| 110 | /* codes for "status" field of completion messages */ |
| 111 | #define RNDIS_STATUS_SUCCESS ccpu2(0x00000000) |
| 112 | #define RNDIS_STATUS_FAILURE ccpu2(0xc0000001) |
| 113 | #define RNDIS_STATUS_INVALID_DATA ccpu2(0xc0010015) |
| 114 | #define RNDIS_STATUS_NOT_SUPPORTED ccpu2(0xc00000bb) |
| 115 | #define RNDIS_STATUS_MEDIA_CONNECT ccpu2(0x4001000b) |
| 116 | #define RNDIS_STATUS_MEDIA_DISCONNECT ccpu2(0x4001000c) |
| 117 | |
| 118 | |
| 119 | struct rndis_data_hdr { |
| 120 | __le32 msg_type; /* RNDIS_MSG_PACKET */ |
| 121 | __le32 msg_len; // rndis_data_hdr + data_len + pad |
| 122 | __le32 data_offset; // 36 -- right after header |
| 123 | __le32 data_len; // ... real packet size |
| 124 | |
| 125 | __le32 oob_data_offset; // zero |
| 126 | __le32 oob_data_len; // zero |
| 127 | __le32 num_oob; // zero |
| 128 | __le32 packet_data_offset; // zero |
| 129 | |
| 130 | __le32 packet_data_len; // zero |
| 131 | __le32 vc_handle; // zero |
| 132 | __le32 reserved; // zero |
| 133 | } __attribute__ ((packed)); |
| 134 | |
| 135 | struct rndis_init { /* OUT */ |
| 136 | // header and: |
| 137 | __le32 msg_type; /* RNDIS_MSG_INIT */ |
| 138 | __le32 msg_len; // 24 |
| 139 | __le32 request_id; |
| 140 | __le32 major_version; // of rndis (1.0) |
| 141 | __le32 minor_version; |
| 142 | __le32 max_transfer_size; |
| 143 | } __attribute__ ((packed)); |
| 144 | |
| 145 | struct rndis_init_c { /* IN */ |
| 146 | // header and: |
| 147 | __le32 msg_type; /* RNDIS_MSG_INIT_C */ |
| 148 | __le32 msg_len; |
| 149 | __le32 request_id; |
| 150 | __le32 status; |
| 151 | __le32 major_version; // of rndis (1.0) |
| 152 | __le32 minor_version; |
| 153 | __le32 device_flags; |
| 154 | __le32 medium; // zero == 802.3 |
| 155 | __le32 max_packets_per_message; |
| 156 | __le32 max_transfer_size; |
| 157 | __le32 packet_alignment; // max 7; (1<<n) bytes |
| 158 | __le32 af_list_offset; // zero |
| 159 | __le32 af_list_size; // zero |
| 160 | } __attribute__ ((packed)); |
| 161 | |
| 162 | struct rndis_halt { /* OUT (no reply) */ |
| 163 | // header and: |
| 164 | __le32 msg_type; /* RNDIS_MSG_HALT */ |
| 165 | __le32 msg_len; |
| 166 | __le32 request_id; |
| 167 | } __attribute__ ((packed)); |
| 168 | |
| 169 | struct rndis_query { /* OUT */ |
| 170 | // header and: |
| 171 | __le32 msg_type; /* RNDIS_MSG_QUERY */ |
| 172 | __le32 msg_len; |
| 173 | __le32 request_id; |
| 174 | __le32 oid; |
| 175 | __le32 len; |
| 176 | __le32 offset; |
| 177 | /*?*/ __le32 handle; // zero |
| 178 | } __attribute__ ((packed)); |
| 179 | |
| 180 | struct rndis_query_c { /* IN */ |
| 181 | // header and: |
| 182 | __le32 msg_type; /* RNDIS_MSG_QUERY_C */ |
| 183 | __le32 msg_len; |
| 184 | __le32 request_id; |
| 185 | __le32 status; |
| 186 | __le32 len; |
| 187 | __le32 offset; |
| 188 | } __attribute__ ((packed)); |
| 189 | |
| 190 | struct rndis_set { /* OUT */ |
| 191 | // header and: |
| 192 | __le32 msg_type; /* RNDIS_MSG_SET */ |
| 193 | __le32 msg_len; |
| 194 | __le32 request_id; |
| 195 | __le32 oid; |
| 196 | __le32 len; |
| 197 | __le32 offset; |
| 198 | /*?*/ __le32 handle; // zero |
| 199 | } __attribute__ ((packed)); |
| 200 | |
| 201 | struct rndis_set_c { /* IN */ |
| 202 | // header and: |
| 203 | __le32 msg_type; /* RNDIS_MSG_SET_C */ |
| 204 | __le32 msg_len; |
| 205 | __le32 request_id; |
| 206 | __le32 status; |
| 207 | } __attribute__ ((packed)); |
| 208 | |
| 209 | struct rndis_reset { /* IN */ |
| 210 | // header and: |
| 211 | __le32 msg_type; /* RNDIS_MSG_RESET */ |
| 212 | __le32 msg_len; |
| 213 | __le32 reserved; |
| 214 | } __attribute__ ((packed)); |
| 215 | |
| 216 | struct rndis_reset_c { /* OUT */ |
| 217 | // header and: |
| 218 | __le32 msg_type; /* RNDIS_MSG_RESET_C */ |
| 219 | __le32 msg_len; |
| 220 | __le32 status; |
| 221 | __le32 addressing_lost; |
| 222 | } __attribute__ ((packed)); |
| 223 | |
| 224 | struct rndis_indicate { /* IN (unrequested) */ |
| 225 | // header and: |
| 226 | __le32 msg_type; /* RNDIS_MSG_INDICATE */ |
| 227 | __le32 msg_len; |
| 228 | __le32 status; |
| 229 | __le32 length; |
| 230 | __le32 offset; |
| 231 | /**/ __le32 diag_status; |
| 232 | __le32 error_offset; |
| 233 | /**/ __le32 message; |
| 234 | } __attribute__ ((packed)); |
| 235 | |
| 236 | struct rndis_keepalive { /* OUT (optionally IN) */ |
| 237 | // header and: |
| 238 | __le32 msg_type; /* RNDIS_MSG_KEEPALIVE */ |
| 239 | __le32 msg_len; |
| 240 | __le32 request_id; |
| 241 | } __attribute__ ((packed)); |
| 242 | |
| 243 | struct rndis_keepalive_c { /* IN (optionally OUT) */ |
| 244 | // header and: |
| 245 | __le32 msg_type; /* RNDIS_MSG_KEEPALIVE_C */ |
| 246 | __le32 msg_len; |
| 247 | __le32 request_id; |
| 248 | __le32 status; |
| 249 | } __attribute__ ((packed)); |
| 250 | |
| 251 | /* NOTE: about 30 OIDs are "mandatory" for peripherals to support ... and |
| 252 | * there are gobs more that may optionally be supported. We'll avoid as much |
| 253 | * of that mess as possible. |
| 254 | */ |
| 255 | #define OID_802_3_PERMANENT_ADDRESS ccpu2(0x01010101) |
David Brownell | ddda086 | 2007-04-17 17:53:20 -0700 | [diff] [blame] | 256 | #define OID_GEN_MAXIMUM_FRAME_SIZE ccpu2(0x00010106) |
David Brownell | 64e0491 | 2005-08-31 09:54:36 -0700 | [diff] [blame] | 257 | #define OID_GEN_CURRENT_PACKET_FILTER ccpu2(0x0001010e) |
| 258 | |
Jussi Kivilinna | a842eda | 2008-01-26 00:51:01 +0200 | [diff] [blame^] | 259 | /* packet filter bits used by OID_GEN_CURRENT_PACKET_FILTER */ |
| 260 | #define RNDIS_PACKET_TYPE_DIRECTED ccpu2(0x00000001) |
| 261 | #define RNDIS_PACKET_TYPE_MULTICAST ccpu2(0x00000002) |
| 262 | #define RNDIS_PACKET_TYPE_ALL_MULTICAST ccpu2(0x00000004) |
| 263 | #define RNDIS_PACKET_TYPE_BROADCAST ccpu2(0x00000008) |
| 264 | #define RNDIS_PACKET_TYPE_SOURCE_ROUTING ccpu2(0x00000010) |
| 265 | #define RNDIS_PACKET_TYPE_PROMISCUOUS ccpu2(0x00000020) |
| 266 | #define RNDIS_PACKET_TYPE_SMT ccpu2(0x00000040) |
| 267 | #define RNDIS_PACKET_TYPE_ALL_LOCAL ccpu2(0x00000080) |
| 268 | #define RNDIS_PACKET_TYPE_GROUP ccpu2(0x00001000) |
| 269 | #define RNDIS_PACKET_TYPE_ALL_FUNCTIONAL ccpu2(0x00002000) |
| 270 | #define RNDIS_PACKET_TYPE_FUNCTIONAL ccpu2(0x00004000) |
| 271 | #define RNDIS_PACKET_TYPE_MAC_FRAME ccpu2(0x00008000) |
| 272 | |
| 273 | /* default filter used with RNDIS devices */ |
| 274 | #define RNDIS_DEFAULT_FILTER ( \ |
| 275 | RNDIS_PACKET_TYPE_DIRECTED | \ |
| 276 | RNDIS_PACKET_TYPE_BROADCAST | \ |
| 277 | RNDIS_PACKET_TYPE_ALL_MULTICAST | \ |
| 278 | RNDIS_PACKET_TYPE_PROMISCUOUS) |
| 279 | |
David Brownell | 64e0491 | 2005-08-31 09:54:36 -0700 | [diff] [blame] | 280 | /* |
| 281 | * RNDIS notifications from device: command completion; "reverse" |
| 282 | * keepalives; etc |
| 283 | */ |
| 284 | static void rndis_status(struct usbnet *dev, struct urb *urb) |
| 285 | { |
| 286 | devdbg(dev, "rndis status urb, len %d stat %d", |
| 287 | urb->actual_length, urb->status); |
| 288 | // FIXME for keepalives, respond immediately (asynchronously) |
| 289 | // if not an RNDIS status, do like cdc_status(dev,urb) does |
| 290 | } |
| 291 | |
| 292 | /* |
| 293 | * RPC done RNDIS-style. Caller guarantees: |
| 294 | * - message is properly byteswapped |
| 295 | * - there's no other request pending |
| 296 | * - buf can hold up to 1KB response (required by RNDIS spec) |
| 297 | * On return, the first few entries are already byteswapped. |
| 298 | * |
| 299 | * Call context is likely probe(), before interface name is known, |
| 300 | * which is why we won't try to use it in the diagnostics. |
| 301 | */ |
| 302 | static int rndis_command(struct usbnet *dev, struct rndis_msg_hdr *buf) |
| 303 | { |
| 304 | struct cdc_state *info = (void *) &dev->data; |
Ole Andre Vadla Ravnas | ad55d71 | 2006-12-14 16:01:28 -0800 | [diff] [blame] | 305 | int master_ifnum; |
David Brownell | 64e0491 | 2005-08-31 09:54:36 -0700 | [diff] [blame] | 306 | int retval; |
| 307 | unsigned count; |
| 308 | __le32 rsp; |
| 309 | u32 xid = 0, msg_len, request_id; |
| 310 | |
| 311 | /* REVISIT when this gets called from contexts other than probe() or |
| 312 | * disconnect(): either serialize, or dispatch responses on xid |
| 313 | */ |
| 314 | |
Ole Andre Vadla Ravnas | ad55d71 | 2006-12-14 16:01:28 -0800 | [diff] [blame] | 315 | /* Issue the request; xid is unique, don't bother byteswapping it */ |
David Brownell | 64e0491 | 2005-08-31 09:54:36 -0700 | [diff] [blame] | 316 | if (likely(buf->msg_type != RNDIS_MSG_HALT |
| 317 | && buf->msg_type != RNDIS_MSG_RESET)) { |
| 318 | xid = dev->xid++; |
| 319 | if (!xid) |
| 320 | xid = dev->xid++; |
| 321 | buf->request_id = (__force __le32) xid; |
| 322 | } |
Ole Andre Vadla Ravnas | ad55d71 | 2006-12-14 16:01:28 -0800 | [diff] [blame] | 323 | master_ifnum = info->control->cur_altsetting->desc.bInterfaceNumber; |
David Brownell | 64e0491 | 2005-08-31 09:54:36 -0700 | [diff] [blame] | 324 | retval = usb_control_msg(dev->udev, |
| 325 | usb_sndctrlpipe(dev->udev, 0), |
| 326 | USB_CDC_SEND_ENCAPSULATED_COMMAND, |
| 327 | USB_TYPE_CLASS | USB_RECIP_INTERFACE, |
Ole Andre Vadla Ravnas | ad55d71 | 2006-12-14 16:01:28 -0800 | [diff] [blame] | 328 | 0, master_ifnum, |
David Brownell | 64e0491 | 2005-08-31 09:54:36 -0700 | [diff] [blame] | 329 | buf, le32_to_cpu(buf->msg_len), |
| 330 | RNDIS_CONTROL_TIMEOUT_MS); |
| 331 | if (unlikely(retval < 0 || xid == 0)) |
| 332 | return retval; |
| 333 | |
| 334 | // FIXME Seems like some devices discard responses when |
| 335 | // we time out and cancel our "get response" requests... |
| 336 | // so, this is fragile. Probably need to poll for status. |
| 337 | |
| 338 | /* ignore status endpoint, just poll the control channel; |
| 339 | * the request probably completed immediately |
| 340 | */ |
| 341 | rsp = buf->msg_type | RNDIS_MSG_COMPLETION; |
| 342 | for (count = 0; count < 10; count++) { |
Ole Andre Vadla Ravnas | ad55d71 | 2006-12-14 16:01:28 -0800 | [diff] [blame] | 343 | memset(buf, 0, CONTROL_BUFFER_SIZE); |
David Brownell | 64e0491 | 2005-08-31 09:54:36 -0700 | [diff] [blame] | 344 | retval = usb_control_msg(dev->udev, |
| 345 | usb_rcvctrlpipe(dev->udev, 0), |
| 346 | USB_CDC_GET_ENCAPSULATED_RESPONSE, |
| 347 | USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE, |
Ole Andre Vadla Ravnas | ad55d71 | 2006-12-14 16:01:28 -0800 | [diff] [blame] | 348 | 0, master_ifnum, |
| 349 | buf, CONTROL_BUFFER_SIZE, |
David Brownell | 64e0491 | 2005-08-31 09:54:36 -0700 | [diff] [blame] | 350 | RNDIS_CONTROL_TIMEOUT_MS); |
| 351 | if (likely(retval >= 8)) { |
| 352 | msg_len = le32_to_cpu(buf->msg_len); |
| 353 | request_id = (__force u32) buf->request_id; |
| 354 | if (likely(buf->msg_type == rsp)) { |
| 355 | if (likely(request_id == xid)) { |
| 356 | if (unlikely(rsp == RNDIS_MSG_RESET_C)) |
| 357 | return 0; |
| 358 | if (likely(RNDIS_STATUS_SUCCESS |
| 359 | == buf->status)) |
| 360 | return 0; |
| 361 | dev_dbg(&info->control->dev, |
| 362 | "rndis reply status %08x\n", |
| 363 | le32_to_cpu(buf->status)); |
| 364 | return -EL3RST; |
| 365 | } |
| 366 | dev_dbg(&info->control->dev, |
| 367 | "rndis reply id %d expected %d\n", |
| 368 | request_id, xid); |
| 369 | /* then likely retry */ |
| 370 | } else switch (buf->msg_type) { |
| 371 | case RNDIS_MSG_INDICATE: { /* fault */ |
| 372 | // struct rndis_indicate *msg = (void *)buf; |
| 373 | dev_info(&info->control->dev, |
David Brownell | ddda086 | 2007-04-17 17:53:20 -0700 | [diff] [blame] | 374 | "rndis fault indication\n"); |
David Brownell | 64e0491 | 2005-08-31 09:54:36 -0700 | [diff] [blame] | 375 | } |
| 376 | break; |
| 377 | case RNDIS_MSG_KEEPALIVE: { /* ping */ |
| 378 | struct rndis_keepalive_c *msg = (void *)buf; |
| 379 | |
| 380 | msg->msg_type = RNDIS_MSG_KEEPALIVE_C; |
| 381 | msg->msg_len = ccpu2(sizeof *msg); |
| 382 | msg->status = RNDIS_STATUS_SUCCESS; |
| 383 | retval = usb_control_msg(dev->udev, |
| 384 | usb_sndctrlpipe(dev->udev, 0), |
| 385 | USB_CDC_SEND_ENCAPSULATED_COMMAND, |
| 386 | USB_TYPE_CLASS | USB_RECIP_INTERFACE, |
Ole Andre Vadla Ravnas | ad55d71 | 2006-12-14 16:01:28 -0800 | [diff] [blame] | 387 | 0, master_ifnum, |
David Brownell | 64e0491 | 2005-08-31 09:54:36 -0700 | [diff] [blame] | 388 | msg, sizeof *msg, |
| 389 | RNDIS_CONTROL_TIMEOUT_MS); |
| 390 | if (unlikely(retval < 0)) |
| 391 | dev_dbg(&info->control->dev, |
| 392 | "rndis keepalive err %d\n", |
| 393 | retval); |
| 394 | } |
| 395 | break; |
| 396 | default: |
| 397 | dev_dbg(&info->control->dev, |
| 398 | "unexpected rndis msg %08x len %d\n", |
| 399 | le32_to_cpu(buf->msg_type), msg_len); |
| 400 | } |
| 401 | } else { |
| 402 | /* device probably issued a protocol stall; ignore */ |
| 403 | dev_dbg(&info->control->dev, |
| 404 | "rndis response error, code %d\n", retval); |
| 405 | } |
| 406 | msleep(2); |
| 407 | } |
| 408 | dev_dbg(&info->control->dev, "rndis response timeout\n"); |
| 409 | return -ETIMEDOUT; |
| 410 | } |
| 411 | |
David Brownell | ddda086 | 2007-04-17 17:53:20 -0700 | [diff] [blame] | 412 | /* |
| 413 | * rndis_query: |
| 414 | * |
| 415 | * Performs a query for @oid along with 0 or more bytes of payload as |
| 416 | * specified by @in_len. If @reply_len is not set to -1 then the reply |
| 417 | * length is checked against this value, resulting in an error if it |
| 418 | * doesn't match. |
| 419 | * |
| 420 | * NOTE: Adding a payload exactly or greater than the size of the expected |
| 421 | * response payload is an evident requirement MSFT added for ActiveSync. |
| 422 | * |
| 423 | * The only exception is for OIDs that return a variably sized response, |
| 424 | * in which case no payload should be added. This undocumented (and |
| 425 | * nonsensical!) issue was found by sniffing protocol requests from the |
| 426 | * ActiveSync 4.1 Windows driver. |
| 427 | */ |
| 428 | static int rndis_query(struct usbnet *dev, struct usb_interface *intf, |
| 429 | void *buf, u32 oid, u32 in_len, |
| 430 | void **reply, int *reply_len) |
| 431 | { |
| 432 | int retval; |
| 433 | union { |
| 434 | void *buf; |
| 435 | struct rndis_msg_hdr *header; |
| 436 | struct rndis_query *get; |
| 437 | struct rndis_query_c *get_c; |
| 438 | } u; |
| 439 | u32 off, len; |
| 440 | |
| 441 | u.buf = buf; |
| 442 | |
| 443 | memset(u.get, 0, sizeof *u.get + in_len); |
| 444 | u.get->msg_type = RNDIS_MSG_QUERY; |
| 445 | u.get->msg_len = cpu_to_le32(sizeof *u.get + in_len); |
| 446 | u.get->oid = oid; |
| 447 | u.get->len = cpu_to_le32(in_len); |
| 448 | u.get->offset = ccpu2(20); |
| 449 | |
| 450 | retval = rndis_command(dev, u.header); |
| 451 | if (unlikely(retval < 0)) { |
| 452 | dev_err(&intf->dev, "RNDIS_MSG_QUERY(0x%08x) failed, %d\n", |
| 453 | oid, retval); |
| 454 | return retval; |
| 455 | } |
| 456 | |
| 457 | off = le32_to_cpu(u.get_c->offset); |
| 458 | len = le32_to_cpu(u.get_c->len); |
| 459 | if (unlikely((8 + off + len) > CONTROL_BUFFER_SIZE)) |
| 460 | goto response_error; |
| 461 | |
| 462 | if (*reply_len != -1 && len != *reply_len) |
| 463 | goto response_error; |
| 464 | |
| 465 | *reply = (unsigned char *) &u.get_c->request_id + off; |
| 466 | *reply_len = len; |
| 467 | |
| 468 | return retval; |
| 469 | |
| 470 | response_error: |
| 471 | dev_err(&intf->dev, "RNDIS_MSG_QUERY(0x%08x) " |
| 472 | "invalid response - off %d len %d\n", |
| 473 | oid, off, len); |
| 474 | return -EDOM; |
| 475 | } |
| 476 | |
David Brownell | 64e0491 | 2005-08-31 09:54:36 -0700 | [diff] [blame] | 477 | static int rndis_bind(struct usbnet *dev, struct usb_interface *intf) |
| 478 | { |
| 479 | int retval; |
| 480 | struct net_device *net = dev->net; |
Daniel Gollub | deb31f1 | 2007-01-16 11:03:01 +0100 | [diff] [blame] | 481 | struct cdc_state *info = (void *) &dev->data; |
David Brownell | 64e0491 | 2005-08-31 09:54:36 -0700 | [diff] [blame] | 482 | union { |
| 483 | void *buf; |
| 484 | struct rndis_msg_hdr *header; |
| 485 | struct rndis_init *init; |
| 486 | struct rndis_init_c *init_c; |
| 487 | struct rndis_query *get; |
| 488 | struct rndis_query_c *get_c; |
| 489 | struct rndis_set *set; |
| 490 | struct rndis_set_c *set_c; |
Jussi Kivilinna | 9ff5587 | 2008-01-26 00:50:55 +0200 | [diff] [blame] | 491 | struct rndis_halt *halt; |
David Brownell | 64e0491 | 2005-08-31 09:54:36 -0700 | [diff] [blame] | 492 | } u; |
| 493 | u32 tmp; |
David Brownell | ddda086 | 2007-04-17 17:53:20 -0700 | [diff] [blame] | 494 | int reply_len; |
| 495 | unsigned char *bp; |
David Brownell | 64e0491 | 2005-08-31 09:54:36 -0700 | [diff] [blame] | 496 | |
| 497 | /* we can't rely on i/o from stack working, or stack allocation */ |
Ole Andre Vadla Ravnas | ad55d71 | 2006-12-14 16:01:28 -0800 | [diff] [blame] | 498 | u.buf = kmalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL); |
David Brownell | 64e0491 | 2005-08-31 09:54:36 -0700 | [diff] [blame] | 499 | if (!u.buf) |
| 500 | return -ENOMEM; |
| 501 | retval = usbnet_generic_cdc_bind(dev, intf); |
| 502 | if (retval < 0) |
Daniel Gollub | deb31f1 | 2007-01-16 11:03:01 +0100 | [diff] [blame] | 503 | goto fail; |
David Brownell | 64e0491 | 2005-08-31 09:54:36 -0700 | [diff] [blame] | 504 | |
David Brownell | 64e0491 | 2005-08-31 09:54:36 -0700 | [diff] [blame] | 505 | u.init->msg_type = RNDIS_MSG_INIT; |
| 506 | u.init->msg_len = ccpu2(sizeof *u.init); |
| 507 | u.init->major_version = ccpu2(1); |
| 508 | u.init->minor_version = ccpu2(0); |
David Brownell | 64e0491 | 2005-08-31 09:54:36 -0700 | [diff] [blame] | 509 | |
Ole Andre Vadla Ravnas | ad55d71 | 2006-12-14 16:01:28 -0800 | [diff] [blame] | 510 | /* max transfer (in spec) is 0x4000 at full speed, but for |
| 511 | * TX we'll stick to one Ethernet packet plus RNDIS framing. |
| 512 | * For RX we handle drivers that zero-pad to end-of-packet. |
| 513 | * Don't let userspace change these settings. |
David Brownell | ddda086 | 2007-04-17 17:53:20 -0700 | [diff] [blame] | 514 | * |
| 515 | * NOTE: there still seems to be wierdness here, as if we need |
| 516 | * to do some more things to make sure WinCE targets accept this. |
| 517 | * They default to jumbograms of 8KB or 16KB, which is absurd |
| 518 | * for such low data rates and which is also more than Linux |
| 519 | * can usually expect to allocate for SKB data... |
Ole Andre Vadla Ravnas | ad55d71 | 2006-12-14 16:01:28 -0800 | [diff] [blame] | 520 | */ |
| 521 | net->hard_header_len += sizeof (struct rndis_data_hdr); |
| 522 | dev->hard_mtu = net->mtu + net->hard_header_len; |
| 523 | |
| 524 | dev->rx_urb_size = dev->hard_mtu + (dev->maxpacket + 1); |
| 525 | dev->rx_urb_size &= ~(dev->maxpacket - 1); |
| 526 | u.init->max_transfer_size = cpu_to_le32(dev->rx_urb_size); |
| 527 | |
| 528 | net->change_mtu = NULL; |
David Brownell | 64e0491 | 2005-08-31 09:54:36 -0700 | [diff] [blame] | 529 | retval = rndis_command(dev, u.header); |
| 530 | if (unlikely(retval < 0)) { |
| 531 | /* it might not even be an RNDIS device!! */ |
| 532 | dev_err(&intf->dev, "RNDIS init failed, %d\n", retval); |
David Brownell | ddda086 | 2007-04-17 17:53:20 -0700 | [diff] [blame] | 533 | goto fail_and_release; |
Ole Andre Vadla Ravnas | ad55d71 | 2006-12-14 16:01:28 -0800 | [diff] [blame] | 534 | } |
| 535 | tmp = le32_to_cpu(u.init_c->max_transfer_size); |
| 536 | if (tmp < dev->hard_mtu) { |
Thomas Sailer | 500d2c2 | 2007-10-24 00:47:19 +0200 | [diff] [blame] | 537 | if (tmp <= net->hard_header_len) { |
| 538 | dev_err(&intf->dev, |
| 539 | "dev can't take %u byte packets (max %u)\n", |
| 540 | dev->hard_mtu, tmp); |
| 541 | retval = -EINVAL; |
Jussi Kivilinna | 9ff5587 | 2008-01-26 00:50:55 +0200 | [diff] [blame] | 542 | goto halt_fail_and_release; |
Thomas Sailer | 500d2c2 | 2007-10-24 00:47:19 +0200 | [diff] [blame] | 543 | } |
| 544 | dev->hard_mtu = tmp; |
| 545 | net->mtu = dev->hard_mtu - net->hard_header_len; |
| 546 | dev_warn(&intf->dev, |
| 547 | "dev can't take %u byte packets (max %u), " |
| 548 | "adjusting MTU to %u\n", |
| 549 | dev->hard_mtu, tmp, net->mtu); |
David Brownell | 64e0491 | 2005-08-31 09:54:36 -0700 | [diff] [blame] | 550 | } |
Ole Andre Vadla Ravnas | ad55d71 | 2006-12-14 16:01:28 -0800 | [diff] [blame] | 551 | |
David Brownell | 64e0491 | 2005-08-31 09:54:36 -0700 | [diff] [blame] | 552 | /* REVISIT: peripheral "alignment" request is ignored ... */ |
Ole Andre Vadla Ravnas | ad55d71 | 2006-12-14 16:01:28 -0800 | [diff] [blame] | 553 | dev_dbg(&intf->dev, |
| 554 | "hard mtu %u (%u from dev), rx buflen %Zu, align %d\n", |
| 555 | dev->hard_mtu, tmp, dev->rx_urb_size, |
David Brownell | 64e0491 | 2005-08-31 09:54:36 -0700 | [diff] [blame] | 556 | 1 << le32_to_cpu(u.init_c->packet_alignment)); |
| 557 | |
David Brownell | ddda086 | 2007-04-17 17:53:20 -0700 | [diff] [blame] | 558 | /* Get designated host ethernet address */ |
| 559 | reply_len = ETH_ALEN; |
| 560 | retval = rndis_query(dev, intf, u.buf, OID_802_3_PERMANENT_ADDRESS, |
| 561 | 48, (void **) &bp, &reply_len); |
| 562 | if (unlikely(retval< 0)) { |
David Brownell | 64e0491 | 2005-08-31 09:54:36 -0700 | [diff] [blame] | 563 | dev_err(&intf->dev, "rndis get ethaddr, %d\n", retval); |
Jussi Kivilinna | 9ff5587 | 2008-01-26 00:50:55 +0200 | [diff] [blame] | 564 | goto halt_fail_and_release; |
David Brownell | 64e0491 | 2005-08-31 09:54:36 -0700 | [diff] [blame] | 565 | } |
David Brownell | ddda086 | 2007-04-17 17:53:20 -0700 | [diff] [blame] | 566 | memcpy(net->dev_addr, bp, ETH_ALEN); |
David Brownell | 64e0491 | 2005-08-31 09:54:36 -0700 | [diff] [blame] | 567 | |
| 568 | /* set a nonzero filter to enable data transfers */ |
| 569 | memset(u.set, 0, sizeof *u.set); |
| 570 | u.set->msg_type = RNDIS_MSG_SET; |
| 571 | u.set->msg_len = ccpu2(4 + sizeof *u.set); |
| 572 | u.set->oid = OID_GEN_CURRENT_PACKET_FILTER; |
| 573 | u.set->len = ccpu2(4); |
| 574 | u.set->offset = ccpu2((sizeof *u.set) - 8); |
Jussi Kivilinna | a842eda | 2008-01-26 00:51:01 +0200 | [diff] [blame^] | 575 | *(__le32 *)(u.buf + sizeof *u.set) = RNDIS_DEFAULT_FILTER; |
David Brownell | 64e0491 | 2005-08-31 09:54:36 -0700 | [diff] [blame] | 576 | |
| 577 | retval = rndis_command(dev, u.header); |
| 578 | if (unlikely(retval < 0)) { |
| 579 | dev_err(&intf->dev, "rndis set packet filter, %d\n", retval); |
Jussi Kivilinna | 9ff5587 | 2008-01-26 00:50:55 +0200 | [diff] [blame] | 580 | goto halt_fail_and_release; |
David Brownell | 64e0491 | 2005-08-31 09:54:36 -0700 | [diff] [blame] | 581 | } |
| 582 | |
| 583 | retval = 0; |
Daniel Gollub | deb31f1 | 2007-01-16 11:03:01 +0100 | [diff] [blame] | 584 | |
| 585 | kfree(u.buf); |
| 586 | return retval; |
| 587 | |
Jussi Kivilinna | 9ff5587 | 2008-01-26 00:50:55 +0200 | [diff] [blame] | 588 | halt_fail_and_release: |
| 589 | memset(u.halt, 0, sizeof *u.halt); |
| 590 | u.halt->msg_type = RNDIS_MSG_HALT; |
| 591 | u.halt->msg_len = ccpu2(sizeof *u.halt); |
| 592 | (void) rndis_command(dev, (void *)u.halt); |
Daniel Gollub | deb31f1 | 2007-01-16 11:03:01 +0100 | [diff] [blame] | 593 | fail_and_release: |
| 594 | usb_set_intfdata(info->data, NULL); |
| 595 | usb_driver_release_interface(driver_of(intf), info->data); |
David Brownell | ddda086 | 2007-04-17 17:53:20 -0700 | [diff] [blame] | 596 | info->data = NULL; |
Daniel Gollub | deb31f1 | 2007-01-16 11:03:01 +0100 | [diff] [blame] | 597 | fail: |
David Brownell | 64e0491 | 2005-08-31 09:54:36 -0700 | [diff] [blame] | 598 | kfree(u.buf); |
| 599 | return retval; |
| 600 | } |
| 601 | |
| 602 | static void rndis_unbind(struct usbnet *dev, struct usb_interface *intf) |
| 603 | { |
| 604 | struct rndis_halt *halt; |
| 605 | |
| 606 | /* try to clear any rndis state/activity (no i/o from stack!) */ |
Jussi Kivilinna | 04c3c01 | 2008-01-26 00:50:49 +0200 | [diff] [blame] | 607 | halt = kzalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL); |
David Brownell | 64e0491 | 2005-08-31 09:54:36 -0700 | [diff] [blame] | 608 | if (halt) { |
| 609 | halt->msg_type = RNDIS_MSG_HALT; |
| 610 | halt->msg_len = ccpu2(sizeof *halt); |
| 611 | (void) rndis_command(dev, (void *)halt); |
| 612 | kfree(halt); |
| 613 | } |
| 614 | |
Bjorge Dijkstra | 2bfa2e1 | 2008-01-26 00:50:38 +0200 | [diff] [blame] | 615 | usbnet_cdc_unbind(dev, intf); |
David Brownell | 64e0491 | 2005-08-31 09:54:36 -0700 | [diff] [blame] | 616 | } |
| 617 | |
| 618 | /* |
| 619 | * DATA -- host must not write zlps |
| 620 | */ |
| 621 | static int rndis_rx_fixup(struct usbnet *dev, struct sk_buff *skb) |
| 622 | { |
| 623 | /* peripheral may have batched packets to us... */ |
| 624 | while (likely(skb->len)) { |
| 625 | struct rndis_data_hdr *hdr = (void *)skb->data; |
| 626 | struct sk_buff *skb2; |
| 627 | u32 msg_len, data_offset, data_len; |
| 628 | |
| 629 | msg_len = le32_to_cpu(hdr->msg_len); |
| 630 | data_offset = le32_to_cpu(hdr->data_offset); |
| 631 | data_len = le32_to_cpu(hdr->data_len); |
| 632 | |
| 633 | /* don't choke if we see oob, per-packet data, etc */ |
| 634 | if (unlikely(hdr->msg_type != RNDIS_MSG_PACKET |
| 635 | || skb->len < msg_len |
| 636 | || (data_offset + data_len + 8) > msg_len)) { |
| 637 | dev->stats.rx_frame_errors++; |
| 638 | devdbg(dev, "bad rndis message %d/%d/%d/%d, len %d", |
| 639 | le32_to_cpu(hdr->msg_type), |
| 640 | msg_len, data_offset, data_len, skb->len); |
| 641 | return 0; |
| 642 | } |
| 643 | skb_pull(skb, 8 + data_offset); |
| 644 | |
| 645 | /* at most one packet left? */ |
| 646 | if (likely((data_len - skb->len) <= sizeof *hdr)) { |
| 647 | skb_trim(skb, data_len); |
| 648 | break; |
| 649 | } |
| 650 | |
| 651 | /* try to return all the packets in the batch */ |
| 652 | skb2 = skb_clone(skb, GFP_ATOMIC); |
| 653 | if (unlikely(!skb2)) |
| 654 | break; |
| 655 | skb_pull(skb, msg_len - sizeof *hdr); |
| 656 | skb_trim(skb2, data_len); |
| 657 | usbnet_skb_return(dev, skb2); |
| 658 | } |
| 659 | |
| 660 | /* caller will usbnet_skb_return the remaining packet */ |
| 661 | return 1; |
| 662 | } |
| 663 | |
| 664 | static struct sk_buff * |
Al Viro | 55016f1 | 2005-10-21 03:21:58 -0400 | [diff] [blame] | 665 | rndis_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags) |
David Brownell | 64e0491 | 2005-08-31 09:54:36 -0700 | [diff] [blame] | 666 | { |
| 667 | struct rndis_data_hdr *hdr; |
| 668 | struct sk_buff *skb2; |
| 669 | unsigned len = skb->len; |
| 670 | |
| 671 | if (likely(!skb_cloned(skb))) { |
| 672 | int room = skb_headroom(skb); |
| 673 | |
| 674 | /* enough head room as-is? */ |
| 675 | if (unlikely((sizeof *hdr) <= room)) |
| 676 | goto fill; |
| 677 | |
| 678 | /* enough room, but needs to be readjusted? */ |
| 679 | room += skb_tailroom(skb); |
| 680 | if (likely((sizeof *hdr) <= room)) { |
| 681 | skb->data = memmove(skb->head + sizeof *hdr, |
| 682 | skb->data, len); |
Arnaldo Carvalho de Melo | 27a884d | 2007-04-19 20:29:13 -0700 | [diff] [blame] | 683 | skb_set_tail_pointer(skb, len); |
David Brownell | 64e0491 | 2005-08-31 09:54:36 -0700 | [diff] [blame] | 684 | goto fill; |
| 685 | } |
| 686 | } |
| 687 | |
| 688 | /* create a new skb, with the correct size (and tailpad) */ |
| 689 | skb2 = skb_copy_expand(skb, sizeof *hdr, 1, flags); |
| 690 | dev_kfree_skb_any(skb); |
| 691 | if (unlikely(!skb2)) |
| 692 | return skb2; |
| 693 | skb = skb2; |
| 694 | |
| 695 | /* fill out the RNDIS header. we won't bother trying to batch |
| 696 | * packets; Linux minimizes wasted bandwidth through tx queues. |
| 697 | */ |
| 698 | fill: |
| 699 | hdr = (void *) __skb_push(skb, sizeof *hdr); |
| 700 | memset(hdr, 0, sizeof *hdr); |
| 701 | hdr->msg_type = RNDIS_MSG_PACKET; |
| 702 | hdr->msg_len = cpu_to_le32(skb->len); |
| 703 | hdr->data_offset = ccpu2(sizeof(*hdr) - 8); |
| 704 | hdr->data_len = cpu_to_le32(len); |
| 705 | |
| 706 | /* FIXME make the last packet always be short ... */ |
| 707 | return skb; |
| 708 | } |
| 709 | |
| 710 | |
| 711 | static const struct driver_info rndis_info = { |
| 712 | .description = "RNDIS device", |
David Brownell | ddda086 | 2007-04-17 17:53:20 -0700 | [diff] [blame] | 713 | .flags = FLAG_ETHER | FLAG_FRAMING_RN | FLAG_NO_SETINT, |
David Brownell | 64e0491 | 2005-08-31 09:54:36 -0700 | [diff] [blame] | 714 | .bind = rndis_bind, |
| 715 | .unbind = rndis_unbind, |
| 716 | .status = rndis_status, |
| 717 | .rx_fixup = rndis_rx_fixup, |
| 718 | .tx_fixup = rndis_tx_fixup, |
| 719 | }; |
| 720 | |
| 721 | #undef ccpu2 |
| 722 | |
| 723 | |
| 724 | /*-------------------------------------------------------------------------*/ |
| 725 | |
| 726 | static const struct usb_device_id products [] = { |
| 727 | { |
| 728 | /* RNDIS is MSFT's un-official variant of CDC ACM */ |
| 729 | USB_INTERFACE_INFO(USB_CLASS_COMM, 2 /* ACM */, 0x0ff), |
| 730 | .driver_info = (unsigned long) &rndis_info, |
Ole Andre Vadla Ravnas | ad55d71 | 2006-12-14 16:01:28 -0800 | [diff] [blame] | 731 | }, { |
| 732 | /* "ActiveSync" is an undocumented variant of RNDIS, used in WM5 */ |
| 733 | USB_INTERFACE_INFO(USB_CLASS_MISC, 1, 1), |
| 734 | .driver_info = (unsigned long) &rndis_info, |
David Brownell | 64e0491 | 2005-08-31 09:54:36 -0700 | [diff] [blame] | 735 | }, |
| 736 | { }, // END |
| 737 | }; |
| 738 | MODULE_DEVICE_TABLE(usb, products); |
| 739 | |
| 740 | static struct usb_driver rndis_driver = { |
David Brownell | 64e0491 | 2005-08-31 09:54:36 -0700 | [diff] [blame] | 741 | .name = "rndis_host", |
| 742 | .id_table = products, |
| 743 | .probe = usbnet_probe, |
| 744 | .disconnect = usbnet_disconnect, |
| 745 | .suspend = usbnet_suspend, |
| 746 | .resume = usbnet_resume, |
| 747 | }; |
| 748 | |
| 749 | static int __init rndis_init(void) |
| 750 | { |
David Brownell | 51400f1 | 2006-04-02 10:19:08 -0800 | [diff] [blame] | 751 | return usb_register(&rndis_driver); |
David Brownell | 64e0491 | 2005-08-31 09:54:36 -0700 | [diff] [blame] | 752 | } |
| 753 | module_init(rndis_init); |
| 754 | |
| 755 | static void __exit rndis_exit(void) |
| 756 | { |
David Brownell | 51400f1 | 2006-04-02 10:19:08 -0800 | [diff] [blame] | 757 | usb_deregister(&rndis_driver); |
David Brownell | 64e0491 | 2005-08-31 09:54:36 -0700 | [diff] [blame] | 758 | } |
| 759 | module_exit(rndis_exit); |
| 760 | |
| 761 | MODULE_AUTHOR("David Brownell"); |
| 762 | MODULE_DESCRIPTION("USB Host side RNDIS driver"); |
| 763 | MODULE_LICENSE("GPL"); |