Elina Pasheva | eb4fd8c | 2010-04-27 18:06:41 -0700 | [diff] [blame] | 1 | /* |
| 2 | * USB-to-WWAN Driver for Sierra Wireless modems |
| 3 | * |
| 4 | * Copyright (C) 2008, 2009, 2010 Paxton Smith, Matthew Safar, Rory Filer |
| 5 | * <linux@sierrawireless.com> |
| 6 | * |
| 7 | * Portions of this based on the cdc_ether driver by David Brownell (2003-2005) |
| 8 | * and Ole Andre Vadla Ravnas (ActiveSync) (2006). |
| 9 | * |
| 10 | * IMPORTANT DISCLAIMER: This driver is not commercially supported by |
| 11 | * Sierra Wireless. Use at your own risk. |
| 12 | * |
| 13 | * This program is free software; you can redistribute it and/or modify |
| 14 | * it under the terms of the GNU General Public License as published by |
| 15 | * the Free Software Foundation; either version 2 of the License, or |
| 16 | * (at your option) any later version. |
| 17 | * |
| 18 | * This program is distributed in the hope that it will be useful, |
| 19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 21 | * GNU General Public License for more details. |
| 22 | * |
| 23 | * You should have received a copy of the GNU General Public License |
| 24 | * along with this program; if not, write to the Free Software |
| 25 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 26 | */ |
| 27 | |
| 28 | #define DRIVER_VERSION "v.2.0" |
| 29 | #define DRIVER_AUTHOR "Paxton Smith, Matthew Safar, Rory Filer" |
| 30 | #define DRIVER_DESC "USB-to-WWAN Driver for Sierra Wireless modems" |
| 31 | static const char driver_name[] = "sierra_net"; |
| 32 | |
| 33 | /* if defined debug messages enabled */ |
| 34 | /*#define DEBUG*/ |
| 35 | |
| 36 | #include <linux/module.h> |
| 37 | #include <linux/etherdevice.h> |
| 38 | #include <linux/ethtool.h> |
| 39 | #include <linux/mii.h> |
| 40 | #include <linux/sched.h> |
| 41 | #include <linux/timer.h> |
| 42 | #include <linux/usb.h> |
| 43 | #include <linux/usb/cdc.h> |
| 44 | #include <net/ip.h> |
| 45 | #include <net/udp.h> |
| 46 | #include <asm/unaligned.h> |
| 47 | #include <linux/usb/usbnet.h> |
| 48 | |
| 49 | #define SWI_USB_REQUEST_GET_FW_ATTR 0x06 |
| 50 | #define SWI_GET_FW_ATTR_MASK 0x08 |
| 51 | |
| 52 | /* atomic counter partially included in MAC address to make sure 2 devices |
| 53 | * do not end up with the same MAC - concept breaks in case of > 255 ifaces |
| 54 | */ |
| 55 | static atomic_t iface_counter = ATOMIC_INIT(0); |
| 56 | |
| 57 | /* |
| 58 | * SYNC Timer Delay definition used to set the expiry time |
| 59 | */ |
| 60 | #define SIERRA_NET_SYNCDELAY (2*HZ) |
| 61 | |
| 62 | /* Max. MTU supported. The modem buffers are limited to 1500 */ |
| 63 | #define SIERRA_NET_MAX_SUPPORTED_MTU 1500 |
| 64 | |
| 65 | /* The SIERRA_NET_USBCTL_BUF_LEN defines a buffer size allocated for control |
| 66 | * message reception ... and thus the max. received packet. |
| 67 | * (May be the cause for parse_hip returning -EINVAL) |
| 68 | */ |
| 69 | #define SIERRA_NET_USBCTL_BUF_LEN 1024 |
| 70 | |
| 71 | /* list of interface numbers - used for constructing interface lists */ |
| 72 | struct sierra_net_iface_info { |
| 73 | const u32 infolen; /* number of interface numbers on list */ |
| 74 | const u8 *ifaceinfo; /* pointer to the array holding the numbers */ |
| 75 | }; |
| 76 | |
| 77 | struct sierra_net_info_data { |
| 78 | u16 rx_urb_size; |
| 79 | struct sierra_net_iface_info whitelist; |
| 80 | }; |
| 81 | |
| 82 | /* Private data structure */ |
| 83 | struct sierra_net_data { |
| 84 | |
| 85 | u8 ethr_hdr_tmpl[ETH_HLEN]; /* ethernet header template for rx'd pkts */ |
| 86 | |
| 87 | u16 link_up; /* air link up or down */ |
| 88 | u8 tx_hdr_template[4]; /* part of HIP hdr for tx'd packets */ |
| 89 | |
| 90 | u8 sync_msg[4]; /* SYNC message */ |
| 91 | u8 shdwn_msg[4]; /* Shutdown message */ |
| 92 | |
| 93 | /* Backpointer to the container */ |
| 94 | struct usbnet *usbnet; |
| 95 | |
| 96 | u8 ifnum; /* interface number */ |
| 97 | |
| 98 | /* Bit masks, must be a power of 2 */ |
| 99 | #define SIERRA_NET_EVENT_RESP_AVAIL 0x01 |
| 100 | #define SIERRA_NET_TIMER_EXPIRY 0x02 |
| 101 | unsigned long kevent_flags; |
| 102 | struct work_struct sierra_net_kevent; |
| 103 | struct timer_list sync_timer; /* For retrying SYNC sequence */ |
| 104 | }; |
| 105 | |
| 106 | struct param { |
| 107 | int is_present; |
| 108 | union { |
| 109 | void *ptr; |
| 110 | u32 dword; |
| 111 | u16 word; |
| 112 | u8 byte; |
| 113 | }; |
| 114 | }; |
| 115 | |
| 116 | /* HIP message type */ |
| 117 | #define SIERRA_NET_HIP_EXTENDEDID 0x7F |
| 118 | #define SIERRA_NET_HIP_HSYNC_ID 0x60 /* Modem -> host */ |
| 119 | #define SIERRA_NET_HIP_RESTART_ID 0x62 /* Modem -> host */ |
| 120 | #define SIERRA_NET_HIP_MSYNC_ID 0x20 /* Host -> modem */ |
| 121 | #define SIERRA_NET_HIP_SHUTD_ID 0x26 /* Host -> modem */ |
| 122 | |
| 123 | #define SIERRA_NET_HIP_EXT_IP_IN_ID 0x0202 |
| 124 | #define SIERRA_NET_HIP_EXT_IP_OUT_ID 0x0002 |
| 125 | |
| 126 | /* 3G UMTS Link Sense Indication definitions */ |
| 127 | #define SIERRA_NET_HIP_LSI_UMTSID 0x78 |
| 128 | |
| 129 | /* Reverse Channel Grant Indication HIP message */ |
| 130 | #define SIERRA_NET_HIP_RCGI 0x64 |
| 131 | |
| 132 | /* LSI Protocol types */ |
| 133 | #define SIERRA_NET_PROTOCOL_UMTS 0x01 |
| 134 | /* LSI Coverage */ |
| 135 | #define SIERRA_NET_COVERAGE_NONE 0x00 |
| 136 | #define SIERRA_NET_COVERAGE_NOPACKET 0x01 |
| 137 | |
| 138 | /* LSI Session */ |
| 139 | #define SIERRA_NET_SESSION_IDLE 0x00 |
| 140 | /* LSI Link types */ |
| 141 | #define SIERRA_NET_AS_LINK_TYPE_IPv4 0x00 |
| 142 | |
| 143 | struct lsi_umts { |
| 144 | u8 protocol; |
| 145 | u8 unused1; |
| 146 | __be16 length; |
| 147 | /* eventually use a union for the rest - assume umts for now */ |
| 148 | u8 coverage; |
| 149 | u8 unused2[41]; |
| 150 | u8 session_state; |
| 151 | u8 unused3[33]; |
| 152 | u8 link_type; |
| 153 | u8 pdp_addr_len; /* NW-supplied PDP address len */ |
| 154 | u8 pdp_addr[16]; /* NW-supplied PDP address (bigendian)) */ |
| 155 | u8 unused4[23]; |
| 156 | u8 dns1_addr_len; /* NW-supplied 1st DNS address len (bigendian) */ |
| 157 | u8 dns1_addr[16]; /* NW-supplied 1st DNS address */ |
| 158 | u8 dns2_addr_len; /* NW-supplied 2nd DNS address len */ |
| 159 | u8 dns2_addr[16]; /* NW-supplied 2nd DNS address (bigendian)*/ |
| 160 | u8 wins1_addr_len; /* NW-supplied 1st Wins address len */ |
| 161 | u8 wins1_addr[16]; /* NW-supplied 1st Wins address (bigendian)*/ |
| 162 | u8 wins2_addr_len; /* NW-supplied 2nd Wins address len */ |
| 163 | u8 wins2_addr[16]; /* NW-supplied 2nd Wins address (bigendian) */ |
| 164 | u8 unused5[4]; |
| 165 | u8 gw_addr_len; /* NW-supplied GW address len */ |
| 166 | u8 gw_addr[16]; /* NW-supplied GW address (bigendian) */ |
| 167 | u8 reserved[8]; |
Eric Dumazet | ba2d358 | 2010-06-02 18:10:09 +0000 | [diff] [blame] | 168 | } __packed; |
Elina Pasheva | eb4fd8c | 2010-04-27 18:06:41 -0700 | [diff] [blame] | 169 | |
| 170 | #define SIERRA_NET_LSI_COMMON_LEN 4 |
| 171 | #define SIERRA_NET_LSI_UMTS_LEN (sizeof(struct lsi_umts)) |
| 172 | #define SIERRA_NET_LSI_UMTS_STATUS_LEN \ |
| 173 | (SIERRA_NET_LSI_UMTS_LEN - SIERRA_NET_LSI_COMMON_LEN) |
| 174 | |
| 175 | /* Forward definitions */ |
| 176 | static void sierra_sync_timer(unsigned long syncdata); |
| 177 | static int sierra_net_change_mtu(struct net_device *net, int new_mtu); |
| 178 | |
| 179 | /* Our own net device operations structure */ |
| 180 | static const struct net_device_ops sierra_net_device_ops = { |
| 181 | .ndo_open = usbnet_open, |
| 182 | .ndo_stop = usbnet_stop, |
| 183 | .ndo_start_xmit = usbnet_start_xmit, |
| 184 | .ndo_tx_timeout = usbnet_tx_timeout, |
| 185 | .ndo_change_mtu = sierra_net_change_mtu, |
| 186 | .ndo_set_mac_address = eth_mac_addr, |
| 187 | .ndo_validate_addr = eth_validate_addr, |
| 188 | }; |
| 189 | |
| 190 | /* get private data associated with passed in usbnet device */ |
| 191 | static inline struct sierra_net_data *sierra_net_get_private(struct usbnet *dev) |
| 192 | { |
| 193 | return (struct sierra_net_data *)dev->data[0]; |
| 194 | } |
| 195 | |
| 196 | /* set private data associated with passed in usbnet device */ |
| 197 | static inline void sierra_net_set_private(struct usbnet *dev, |
| 198 | struct sierra_net_data *priv) |
| 199 | { |
| 200 | dev->data[0] = (unsigned long)priv; |
| 201 | } |
| 202 | |
| 203 | /* is packet IPv4 */ |
| 204 | static inline int is_ip(struct sk_buff *skb) |
| 205 | { |
Eric Dumazet | 807540b | 2010-09-23 05:40:09 +0000 | [diff] [blame] | 206 | return skb->protocol == cpu_to_be16(ETH_P_IP); |
Elina Pasheva | eb4fd8c | 2010-04-27 18:06:41 -0700 | [diff] [blame] | 207 | } |
| 208 | |
| 209 | /* |
| 210 | * check passed in packet and make sure that: |
| 211 | * - it is linear (no scatter/gather) |
| 212 | * - it is ethernet (mac_header properly set) |
| 213 | */ |
| 214 | static int check_ethip_packet(struct sk_buff *skb, struct usbnet *dev) |
| 215 | { |
| 216 | skb_reset_mac_header(skb); /* ethernet header */ |
| 217 | |
| 218 | if (skb_is_nonlinear(skb)) { |
| 219 | netdev_err(dev->net, "Non linear buffer-dropping\n"); |
| 220 | return 0; |
| 221 | } |
| 222 | |
| 223 | if (!pskb_may_pull(skb, ETH_HLEN)) |
| 224 | return 0; |
| 225 | skb->protocol = eth_hdr(skb)->h_proto; |
| 226 | |
| 227 | return 1; |
| 228 | } |
| 229 | |
| 230 | static const u8 *save16bit(struct param *p, const u8 *datap) |
| 231 | { |
| 232 | p->is_present = 1; |
| 233 | p->word = get_unaligned_be16(datap); |
| 234 | return datap + sizeof(p->word); |
| 235 | } |
| 236 | |
| 237 | static const u8 *save8bit(struct param *p, const u8 *datap) |
| 238 | { |
| 239 | p->is_present = 1; |
| 240 | p->byte = *datap; |
| 241 | return datap + sizeof(p->byte); |
| 242 | } |
| 243 | |
| 244 | /*----------------------------------------------------------------------------* |
| 245 | * BEGIN HIP * |
| 246 | *----------------------------------------------------------------------------*/ |
| 247 | /* HIP header */ |
| 248 | #define SIERRA_NET_HIP_HDR_LEN 4 |
| 249 | /* Extended HIP header */ |
| 250 | #define SIERRA_NET_HIP_EXT_HDR_LEN 6 |
| 251 | |
| 252 | struct hip_hdr { |
| 253 | int hdrlen; |
| 254 | struct param payload_len; |
| 255 | struct param msgid; |
| 256 | struct param msgspecific; |
| 257 | struct param extmsgid; |
| 258 | }; |
| 259 | |
| 260 | static int parse_hip(const u8 *buf, const u32 buflen, struct hip_hdr *hh) |
| 261 | { |
| 262 | const u8 *curp = buf; |
| 263 | int padded; |
| 264 | |
| 265 | if (buflen < SIERRA_NET_HIP_HDR_LEN) |
| 266 | return -EPROTO; |
| 267 | |
| 268 | curp = save16bit(&hh->payload_len, curp); |
| 269 | curp = save8bit(&hh->msgid, curp); |
| 270 | curp = save8bit(&hh->msgspecific, curp); |
| 271 | |
| 272 | padded = hh->msgid.byte & 0x80; |
| 273 | hh->msgid.byte &= 0x7F; /* 7 bits */ |
| 274 | |
| 275 | hh->extmsgid.is_present = (hh->msgid.byte == SIERRA_NET_HIP_EXTENDEDID); |
| 276 | if (hh->extmsgid.is_present) { |
| 277 | if (buflen < SIERRA_NET_HIP_EXT_HDR_LEN) |
| 278 | return -EPROTO; |
| 279 | |
| 280 | hh->payload_len.word &= 0x3FFF; /* 14 bits */ |
| 281 | |
| 282 | curp = save16bit(&hh->extmsgid, curp); |
| 283 | hh->extmsgid.word &= 0x03FF; /* 10 bits */ |
| 284 | |
| 285 | hh->hdrlen = SIERRA_NET_HIP_EXT_HDR_LEN; |
| 286 | } else { |
| 287 | hh->payload_len.word &= 0x07FF; /* 11 bits */ |
| 288 | hh->hdrlen = SIERRA_NET_HIP_HDR_LEN; |
| 289 | } |
| 290 | |
| 291 | if (padded) { |
| 292 | hh->hdrlen++; |
| 293 | hh->payload_len.word--; |
| 294 | } |
| 295 | |
| 296 | /* if real packet shorter than the claimed length */ |
| 297 | if (buflen < (hh->hdrlen + hh->payload_len.word)) |
| 298 | return -EINVAL; |
| 299 | |
| 300 | return 0; |
| 301 | } |
| 302 | |
| 303 | static void build_hip(u8 *buf, const u16 payloadlen, |
| 304 | struct sierra_net_data *priv) |
| 305 | { |
| 306 | /* the following doesn't have the full functionality. We |
| 307 | * currently build only one kind of header, so it is faster this way |
| 308 | */ |
| 309 | put_unaligned_be16(payloadlen, buf); |
| 310 | memcpy(buf+2, priv->tx_hdr_template, sizeof(priv->tx_hdr_template)); |
| 311 | } |
| 312 | /*----------------------------------------------------------------------------* |
| 313 | * END HIP * |
| 314 | *----------------------------------------------------------------------------*/ |
| 315 | |
| 316 | static int sierra_net_send_cmd(struct usbnet *dev, |
| 317 | u8 *cmd, int cmdlen, const char * cmd_name) |
| 318 | { |
| 319 | struct sierra_net_data *priv = sierra_net_get_private(dev); |
| 320 | int status; |
| 321 | |
| 322 | status = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0), |
| 323 | USB_CDC_SEND_ENCAPSULATED_COMMAND, |
| 324 | USB_DIR_OUT|USB_TYPE_CLASS|USB_RECIP_INTERFACE, 0, |
| 325 | priv->ifnum, cmd, cmdlen, USB_CTRL_SET_TIMEOUT); |
| 326 | |
| 327 | if (status != cmdlen && status != -ENODEV) |
| 328 | netdev_err(dev->net, "Submit %s failed %d\n", cmd_name, status); |
| 329 | |
| 330 | return status; |
| 331 | } |
| 332 | |
| 333 | static int sierra_net_send_sync(struct usbnet *dev) |
| 334 | { |
| 335 | int status; |
| 336 | struct sierra_net_data *priv = sierra_net_get_private(dev); |
| 337 | |
| 338 | dev_dbg(&dev->udev->dev, "%s", __func__); |
| 339 | |
| 340 | status = sierra_net_send_cmd(dev, priv->sync_msg, |
| 341 | sizeof(priv->sync_msg), "SYNC"); |
| 342 | |
| 343 | return status; |
| 344 | } |
| 345 | |
| 346 | static void sierra_net_set_ctx_index(struct sierra_net_data *priv, u8 ctx_ix) |
| 347 | { |
| 348 | dev_dbg(&(priv->usbnet->udev->dev), "%s %d", __func__, ctx_ix); |
| 349 | priv->tx_hdr_template[0] = 0x3F; |
| 350 | priv->tx_hdr_template[1] = ctx_ix; |
| 351 | *((u16 *)&priv->tx_hdr_template[2]) = |
| 352 | cpu_to_be16(SIERRA_NET_HIP_EXT_IP_OUT_ID); |
| 353 | } |
| 354 | |
| 355 | static inline int sierra_net_is_valid_addrlen(u8 len) |
| 356 | { |
Eric Dumazet | 807540b | 2010-09-23 05:40:09 +0000 | [diff] [blame] | 357 | return len == sizeof(struct in_addr); |
Elina Pasheva | eb4fd8c | 2010-04-27 18:06:41 -0700 | [diff] [blame] | 358 | } |
| 359 | |
| 360 | static int sierra_net_parse_lsi(struct usbnet *dev, char *data, int datalen) |
| 361 | { |
| 362 | struct lsi_umts *lsi = (struct lsi_umts *)data; |
| 363 | |
| 364 | if (datalen < sizeof(struct lsi_umts)) { |
| 365 | netdev_err(dev->net, "%s: Data length %d, exp %Zu\n", |
| 366 | __func__, datalen, |
| 367 | sizeof(struct lsi_umts)); |
| 368 | return -1; |
| 369 | } |
| 370 | |
| 371 | if (lsi->length != cpu_to_be16(SIERRA_NET_LSI_UMTS_STATUS_LEN)) { |
| 372 | netdev_err(dev->net, "%s: LSI_UMTS_STATUS_LEN %d, exp %u\n", |
| 373 | __func__, be16_to_cpu(lsi->length), |
| 374 | (u32)SIERRA_NET_LSI_UMTS_STATUS_LEN); |
| 375 | return -1; |
| 376 | } |
| 377 | |
| 378 | /* Validate the protocol - only support UMTS for now */ |
| 379 | if (lsi->protocol != SIERRA_NET_PROTOCOL_UMTS) { |
| 380 | netdev_err(dev->net, "Protocol unsupported, 0x%02x\n", |
| 381 | lsi->protocol); |
| 382 | return -1; |
| 383 | } |
| 384 | |
| 385 | /* Validate the link type */ |
| 386 | if (lsi->link_type != SIERRA_NET_AS_LINK_TYPE_IPv4) { |
| 387 | netdev_err(dev->net, "Link type unsupported: 0x%02x\n", |
| 388 | lsi->link_type); |
| 389 | return -1; |
| 390 | } |
| 391 | |
| 392 | /* Validate the coverage */ |
| 393 | if (lsi->coverage == SIERRA_NET_COVERAGE_NONE |
| 394 | || lsi->coverage == SIERRA_NET_COVERAGE_NOPACKET) { |
| 395 | netdev_err(dev->net, "No coverage, 0x%02x\n", lsi->coverage); |
| 396 | return 0; |
| 397 | } |
| 398 | |
| 399 | /* Validate the session state */ |
| 400 | if (lsi->session_state == SIERRA_NET_SESSION_IDLE) { |
| 401 | netdev_err(dev->net, "Session idle, 0x%02x\n", |
| 402 | lsi->session_state); |
| 403 | return 0; |
| 404 | } |
| 405 | |
| 406 | /* Set link_sense true */ |
| 407 | return 1; |
| 408 | } |
| 409 | |
| 410 | static void sierra_net_handle_lsi(struct usbnet *dev, char *data, |
| 411 | struct hip_hdr *hh) |
| 412 | { |
| 413 | struct sierra_net_data *priv = sierra_net_get_private(dev); |
| 414 | int link_up; |
| 415 | |
| 416 | link_up = sierra_net_parse_lsi(dev, data + hh->hdrlen, |
| 417 | hh->payload_len.word); |
| 418 | if (link_up < 0) { |
| 419 | netdev_err(dev->net, "Invalid LSI\n"); |
| 420 | return; |
| 421 | } |
| 422 | if (link_up) { |
| 423 | sierra_net_set_ctx_index(priv, hh->msgspecific.byte); |
| 424 | priv->link_up = 1; |
| 425 | netif_carrier_on(dev->net); |
| 426 | } else { |
| 427 | priv->link_up = 0; |
| 428 | netif_carrier_off(dev->net); |
| 429 | } |
| 430 | } |
| 431 | |
| 432 | static void sierra_net_dosync(struct usbnet *dev) |
| 433 | { |
| 434 | int status; |
| 435 | struct sierra_net_data *priv = sierra_net_get_private(dev); |
| 436 | |
| 437 | dev_dbg(&dev->udev->dev, "%s", __func__); |
| 438 | |
| 439 | /* tell modem we are ready */ |
| 440 | status = sierra_net_send_sync(dev); |
| 441 | if (status < 0) |
| 442 | netdev_err(dev->net, |
| 443 | "Send SYNC failed, status %d\n", status); |
| 444 | status = sierra_net_send_sync(dev); |
| 445 | if (status < 0) |
| 446 | netdev_err(dev->net, |
| 447 | "Send SYNC failed, status %d\n", status); |
| 448 | |
| 449 | /* Now, start a timer and make sure we get the Restart Indication */ |
| 450 | priv->sync_timer.function = sierra_sync_timer; |
| 451 | priv->sync_timer.data = (unsigned long) dev; |
| 452 | priv->sync_timer.expires = jiffies + SIERRA_NET_SYNCDELAY; |
| 453 | add_timer(&priv->sync_timer); |
| 454 | } |
| 455 | |
| 456 | static void sierra_net_kevent(struct work_struct *work) |
| 457 | { |
| 458 | struct sierra_net_data *priv = |
| 459 | container_of(work, struct sierra_net_data, sierra_net_kevent); |
| 460 | struct usbnet *dev = priv->usbnet; |
| 461 | int len; |
| 462 | int err; |
| 463 | u8 *buf; |
| 464 | u8 ifnum; |
| 465 | |
| 466 | if (test_bit(SIERRA_NET_EVENT_RESP_AVAIL, &priv->kevent_flags)) { |
| 467 | clear_bit(SIERRA_NET_EVENT_RESP_AVAIL, &priv->kevent_flags); |
| 468 | |
| 469 | /* Query the modem for the LSI message */ |
| 470 | buf = kzalloc(SIERRA_NET_USBCTL_BUF_LEN, GFP_KERNEL); |
| 471 | if (!buf) { |
| 472 | netdev_err(dev->net, |
| 473 | "failed to allocate buf for LS msg\n"); |
| 474 | return; |
| 475 | } |
| 476 | ifnum = priv->ifnum; |
| 477 | len = usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0), |
| 478 | USB_CDC_GET_ENCAPSULATED_RESPONSE, |
| 479 | USB_DIR_IN|USB_TYPE_CLASS|USB_RECIP_INTERFACE, |
| 480 | 0, ifnum, buf, SIERRA_NET_USBCTL_BUF_LEN, |
| 481 | USB_CTRL_SET_TIMEOUT); |
| 482 | |
| 483 | if (len < 0) { |
| 484 | netdev_err(dev->net, |
| 485 | "usb_control_msg failed, status %d\n", len); |
| 486 | } else { |
| 487 | struct hip_hdr hh; |
| 488 | |
| 489 | dev_dbg(&dev->udev->dev, "%s: Received status message," |
| 490 | " %04x bytes", __func__, len); |
| 491 | |
| 492 | err = parse_hip(buf, len, &hh); |
| 493 | if (err) { |
| 494 | netdev_err(dev->net, "%s: Bad packet," |
| 495 | " parse result %d\n", __func__, err); |
| 496 | kfree(buf); |
| 497 | return; |
| 498 | } |
| 499 | |
| 500 | /* Validate packet length */ |
| 501 | if (len != hh.hdrlen + hh.payload_len.word) { |
| 502 | netdev_err(dev->net, "%s: Bad packet, received" |
| 503 | " %d, expected %d\n", __func__, len, |
| 504 | hh.hdrlen + hh.payload_len.word); |
| 505 | kfree(buf); |
| 506 | return; |
| 507 | } |
| 508 | |
| 509 | /* Switch on received message types */ |
| 510 | switch (hh.msgid.byte) { |
| 511 | case SIERRA_NET_HIP_LSI_UMTSID: |
| 512 | dev_dbg(&dev->udev->dev, "LSI for ctx:%d", |
| 513 | hh.msgspecific.byte); |
| 514 | sierra_net_handle_lsi(dev, buf, &hh); |
| 515 | break; |
| 516 | case SIERRA_NET_HIP_RESTART_ID: |
| 517 | dev_dbg(&dev->udev->dev, "Restart reported: %d," |
| 518 | " stopping sync timer", |
| 519 | hh.msgspecific.byte); |
| 520 | /* Got sync resp - stop timer & clear mask */ |
| 521 | del_timer_sync(&priv->sync_timer); |
| 522 | clear_bit(SIERRA_NET_TIMER_EXPIRY, |
| 523 | &priv->kevent_flags); |
| 524 | break; |
| 525 | case SIERRA_NET_HIP_HSYNC_ID: |
| 526 | dev_dbg(&dev->udev->dev, "SYNC received"); |
| 527 | err = sierra_net_send_sync(dev); |
| 528 | if (err < 0) |
| 529 | netdev_err(dev->net, |
| 530 | "Send SYNC failed %d\n", err); |
| 531 | break; |
| 532 | case SIERRA_NET_HIP_EXTENDEDID: |
| 533 | netdev_err(dev->net, "Unrecognized HIP msg, " |
| 534 | "extmsgid 0x%04x\n", hh.extmsgid.word); |
| 535 | break; |
| 536 | case SIERRA_NET_HIP_RCGI: |
| 537 | /* Ignored */ |
| 538 | break; |
| 539 | default: |
| 540 | netdev_err(dev->net, "Unrecognized HIP msg, " |
| 541 | "msgid 0x%02x\n", hh.msgid.byte); |
| 542 | break; |
| 543 | } |
| 544 | } |
| 545 | kfree(buf); |
| 546 | } |
| 547 | /* The sync timer bit might be set */ |
| 548 | if (test_bit(SIERRA_NET_TIMER_EXPIRY, &priv->kevent_flags)) { |
| 549 | clear_bit(SIERRA_NET_TIMER_EXPIRY, &priv->kevent_flags); |
| 550 | dev_dbg(&dev->udev->dev, "Deferred sync timer expiry"); |
| 551 | sierra_net_dosync(priv->usbnet); |
| 552 | } |
| 553 | |
| 554 | if (priv->kevent_flags) |
| 555 | dev_dbg(&dev->udev->dev, "sierra_net_kevent done, " |
| 556 | "kevent_flags = 0x%lx", priv->kevent_flags); |
| 557 | } |
| 558 | |
| 559 | static void sierra_net_defer_kevent(struct usbnet *dev, int work) |
| 560 | { |
| 561 | struct sierra_net_data *priv = sierra_net_get_private(dev); |
| 562 | |
| 563 | set_bit(work, &priv->kevent_flags); |
| 564 | schedule_work(&priv->sierra_net_kevent); |
| 565 | } |
| 566 | |
| 567 | /* |
| 568 | * Sync Retransmit Timer Handler. On expiry, kick the work queue |
| 569 | */ |
| 570 | void sierra_sync_timer(unsigned long syncdata) |
| 571 | { |
| 572 | struct usbnet *dev = (struct usbnet *)syncdata; |
| 573 | |
| 574 | dev_dbg(&dev->udev->dev, "%s", __func__); |
| 575 | /* Kick the tasklet */ |
| 576 | sierra_net_defer_kevent(dev, SIERRA_NET_TIMER_EXPIRY); |
| 577 | } |
| 578 | |
| 579 | static void sierra_net_status(struct usbnet *dev, struct urb *urb) |
| 580 | { |
| 581 | struct usb_cdc_notification *event; |
| 582 | |
| 583 | dev_dbg(&dev->udev->dev, "%s", __func__); |
| 584 | |
| 585 | if (urb->actual_length < sizeof *event) |
| 586 | return; |
| 587 | |
| 588 | /* Add cases to handle other standard notifications. */ |
| 589 | event = urb->transfer_buffer; |
| 590 | switch (event->bNotificationType) { |
| 591 | case USB_CDC_NOTIFY_NETWORK_CONNECTION: |
| 592 | case USB_CDC_NOTIFY_SPEED_CHANGE: |
| 593 | /* USB 305 sends those */ |
| 594 | break; |
| 595 | case USB_CDC_NOTIFY_RESPONSE_AVAILABLE: |
| 596 | sierra_net_defer_kevent(dev, SIERRA_NET_EVENT_RESP_AVAIL); |
| 597 | break; |
| 598 | default: |
| 599 | netdev_err(dev->net, ": unexpected notification %02x!\n", |
| 600 | event->bNotificationType); |
| 601 | break; |
| 602 | } |
| 603 | } |
| 604 | |
| 605 | static void sierra_net_get_drvinfo(struct net_device *net, |
| 606 | struct ethtool_drvinfo *info) |
| 607 | { |
| 608 | /* Inherit standard device info */ |
| 609 | usbnet_get_drvinfo(net, info); |
| 610 | strncpy(info->driver, driver_name, sizeof info->driver); |
| 611 | strncpy(info->version, DRIVER_VERSION, sizeof info->version); |
| 612 | } |
| 613 | |
| 614 | static u32 sierra_net_get_link(struct net_device *net) |
| 615 | { |
| 616 | struct usbnet *dev = netdev_priv(net); |
| 617 | /* Report link is down whenever the interface is down */ |
| 618 | return sierra_net_get_private(dev)->link_up && netif_running(net); |
| 619 | } |
| 620 | |
| 621 | static struct ethtool_ops sierra_net_ethtool_ops = { |
| 622 | .get_drvinfo = sierra_net_get_drvinfo, |
| 623 | .get_link = sierra_net_get_link, |
| 624 | .get_msglevel = usbnet_get_msglevel, |
| 625 | .set_msglevel = usbnet_set_msglevel, |
| 626 | .get_settings = usbnet_get_settings, |
| 627 | .set_settings = usbnet_set_settings, |
| 628 | .nway_reset = usbnet_nway_reset, |
| 629 | }; |
| 630 | |
| 631 | /* MTU can not be more than 1500 bytes, enforce it. */ |
| 632 | static int sierra_net_change_mtu(struct net_device *net, int new_mtu) |
| 633 | { |
| 634 | if (new_mtu > SIERRA_NET_MAX_SUPPORTED_MTU) |
| 635 | return -EINVAL; |
| 636 | |
| 637 | return usbnet_change_mtu(net, new_mtu); |
| 638 | } |
| 639 | |
| 640 | static int is_whitelisted(const u8 ifnum, |
| 641 | const struct sierra_net_iface_info *whitelist) |
| 642 | { |
| 643 | if (whitelist) { |
| 644 | const u8 *list = whitelist->ifaceinfo; |
| 645 | int i; |
| 646 | |
| 647 | for (i = 0; i < whitelist->infolen; i++) { |
| 648 | if (list[i] == ifnum) |
| 649 | return 1; |
| 650 | } |
| 651 | } |
| 652 | return 0; |
| 653 | } |
| 654 | |
| 655 | static int sierra_net_get_fw_attr(struct usbnet *dev, u16 *datap) |
| 656 | { |
| 657 | int result = 0; |
| 658 | u16 *attrdata; |
| 659 | |
| 660 | attrdata = kmalloc(sizeof(*attrdata), GFP_KERNEL); |
| 661 | if (!attrdata) |
| 662 | return -ENOMEM; |
| 663 | |
| 664 | result = usb_control_msg( |
| 665 | dev->udev, |
| 666 | usb_rcvctrlpipe(dev->udev, 0), |
| 667 | /* _u8 vendor specific request */ |
| 668 | SWI_USB_REQUEST_GET_FW_ATTR, |
| 669 | USB_DIR_IN | USB_TYPE_VENDOR, /* __u8 request type */ |
| 670 | 0x0000, /* __u16 value not used */ |
| 671 | 0x0000, /* __u16 index not used */ |
| 672 | attrdata, /* char *data */ |
| 673 | sizeof(*attrdata), /* __u16 size */ |
| 674 | USB_CTRL_SET_TIMEOUT); /* int timeout */ |
| 675 | |
| 676 | if (result < 0) { |
| 677 | kfree(attrdata); |
| 678 | return -EIO; |
| 679 | } |
| 680 | |
| 681 | *datap = *attrdata; |
| 682 | |
| 683 | kfree(attrdata); |
| 684 | return result; |
| 685 | } |
| 686 | |
| 687 | /* |
| 688 | * collects the bulk endpoints, the status endpoint. |
| 689 | */ |
| 690 | static int sierra_net_bind(struct usbnet *dev, struct usb_interface *intf) |
| 691 | { |
| 692 | u8 ifacenum; |
| 693 | u8 numendpoints; |
| 694 | u16 fwattr = 0; |
| 695 | int status; |
| 696 | struct ethhdr *eth; |
| 697 | struct sierra_net_data *priv; |
| 698 | static const u8 sync_tmplate[sizeof(priv->sync_msg)] = { |
| 699 | 0x00, 0x00, SIERRA_NET_HIP_MSYNC_ID, 0x00}; |
| 700 | static const u8 shdwn_tmplate[sizeof(priv->shdwn_msg)] = { |
| 701 | 0x00, 0x00, SIERRA_NET_HIP_SHUTD_ID, 0x00}; |
| 702 | |
| 703 | struct sierra_net_info_data *data = |
| 704 | (struct sierra_net_info_data *)dev->driver_info->data; |
| 705 | |
| 706 | dev_dbg(&dev->udev->dev, "%s", __func__); |
| 707 | |
| 708 | ifacenum = intf->cur_altsetting->desc.bInterfaceNumber; |
| 709 | /* We only accept certain interfaces */ |
| 710 | if (!is_whitelisted(ifacenum, &data->whitelist)) { |
| 711 | dev_dbg(&dev->udev->dev, "Ignoring interface: %d", ifacenum); |
| 712 | return -ENODEV; |
| 713 | } |
| 714 | numendpoints = intf->cur_altsetting->desc.bNumEndpoints; |
| 715 | /* We have three endpoints, bulk in and out, and a status */ |
| 716 | if (numendpoints != 3) { |
| 717 | dev_err(&dev->udev->dev, "Expected 3 endpoints, found: %d", |
| 718 | numendpoints); |
| 719 | return -ENODEV; |
| 720 | } |
| 721 | /* Status endpoint set in usbnet_get_endpoints() */ |
| 722 | dev->status = NULL; |
| 723 | status = usbnet_get_endpoints(dev, intf); |
| 724 | if (status < 0) { |
| 725 | dev_err(&dev->udev->dev, "Error in usbnet_get_endpoints (%d)", |
| 726 | status); |
| 727 | return -ENODEV; |
| 728 | } |
| 729 | /* Initialize sierra private data */ |
| 730 | priv = kzalloc(sizeof *priv, GFP_KERNEL); |
| 731 | if (!priv) { |
| 732 | dev_err(&dev->udev->dev, "No memory"); |
| 733 | return -ENOMEM; |
| 734 | } |
| 735 | |
| 736 | priv->usbnet = dev; |
| 737 | priv->ifnum = ifacenum; |
| 738 | dev->net->netdev_ops = &sierra_net_device_ops; |
| 739 | |
| 740 | /* change MAC addr to include, ifacenum, and to be unique */ |
| 741 | dev->net->dev_addr[ETH_ALEN-2] = atomic_inc_return(&iface_counter); |
| 742 | dev->net->dev_addr[ETH_ALEN-1] = ifacenum; |
| 743 | |
| 744 | /* we will have to manufacture ethernet headers, prepare template */ |
| 745 | eth = (struct ethhdr *)priv->ethr_hdr_tmpl; |
| 746 | memcpy(ð->h_dest, dev->net->dev_addr, ETH_ALEN); |
| 747 | eth->h_proto = cpu_to_be16(ETH_P_IP); |
| 748 | |
| 749 | /* prepare shutdown message template */ |
| 750 | memcpy(priv->shdwn_msg, shdwn_tmplate, sizeof(priv->shdwn_msg)); |
| 751 | /* set context index initially to 0 - prepares tx hdr template */ |
| 752 | sierra_net_set_ctx_index(priv, 0); |
| 753 | |
| 754 | /* decrease the rx_urb_size and max_tx_size to 4k on USB 1.1 */ |
| 755 | dev->rx_urb_size = data->rx_urb_size; |
| 756 | if (dev->udev->speed != USB_SPEED_HIGH) |
| 757 | dev->rx_urb_size = min_t(size_t, 4096, data->rx_urb_size); |
| 758 | |
| 759 | dev->net->hard_header_len += SIERRA_NET_HIP_EXT_HDR_LEN; |
| 760 | dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len; |
| 761 | |
| 762 | /* Set up the netdev */ |
| 763 | dev->net->flags |= IFF_NOARP; |
| 764 | dev->net->ethtool_ops = &sierra_net_ethtool_ops; |
| 765 | netif_carrier_off(dev->net); |
| 766 | |
| 767 | sierra_net_set_private(dev, priv); |
| 768 | |
| 769 | priv->kevent_flags = 0; |
| 770 | |
| 771 | /* Use the shared workqueue */ |
| 772 | INIT_WORK(&priv->sierra_net_kevent, sierra_net_kevent); |
| 773 | |
| 774 | /* Only need to do this once */ |
| 775 | init_timer(&priv->sync_timer); |
| 776 | |
| 777 | /* verify fw attributes */ |
| 778 | status = sierra_net_get_fw_attr(dev, &fwattr); |
| 779 | dev_dbg(&dev->udev->dev, "Fw attr: %x\n", fwattr); |
| 780 | |
| 781 | /* test whether firmware supports DHCP */ |
| 782 | if (!(status == sizeof(fwattr) && (fwattr & SWI_GET_FW_ATTR_MASK))) { |
| 783 | /* found incompatible firmware version */ |
| 784 | dev_err(&dev->udev->dev, "Incompatible driver and firmware" |
| 785 | " versions\n"); |
| 786 | kfree(priv); |
| 787 | return -ENODEV; |
| 788 | } |
| 789 | /* prepare sync message from template */ |
| 790 | memcpy(priv->sync_msg, sync_tmplate, sizeof(priv->sync_msg)); |
| 791 | |
Elina Pasheva | 6f1464b | 2010-04-28 13:28:24 +0000 | [diff] [blame] | 792 | /* initiate the sync sequence */ |
| 793 | sierra_net_dosync(dev); |
| 794 | |
Elina Pasheva | eb4fd8c | 2010-04-27 18:06:41 -0700 | [diff] [blame] | 795 | return 0; |
| 796 | } |
| 797 | |
| 798 | static void sierra_net_unbind(struct usbnet *dev, struct usb_interface *intf) |
| 799 | { |
| 800 | int status; |
| 801 | struct sierra_net_data *priv = sierra_net_get_private(dev); |
| 802 | |
| 803 | dev_dbg(&dev->udev->dev, "%s", __func__); |
| 804 | |
Tejun Heo | 23f333a | 2010-12-12 16:45:14 +0100 | [diff] [blame^] | 805 | /* kill the timer and work */ |
Elina Pasheva | eb4fd8c | 2010-04-27 18:06:41 -0700 | [diff] [blame] | 806 | del_timer_sync(&priv->sync_timer); |
Tejun Heo | 23f333a | 2010-12-12 16:45:14 +0100 | [diff] [blame^] | 807 | cancel_work_sync(&priv->sierra_net_kevent); |
Elina Pasheva | eb4fd8c | 2010-04-27 18:06:41 -0700 | [diff] [blame] | 808 | |
| 809 | /* tell modem we are going away */ |
| 810 | status = sierra_net_send_cmd(dev, priv->shdwn_msg, |
| 811 | sizeof(priv->shdwn_msg), "Shutdown"); |
| 812 | if (status < 0) |
| 813 | netdev_err(dev->net, |
| 814 | "usb_control_msg failed, status %d\n", status); |
| 815 | |
| 816 | sierra_net_set_private(dev, NULL); |
| 817 | |
| 818 | kfree(priv); |
| 819 | } |
| 820 | |
| 821 | static struct sk_buff *sierra_net_skb_clone(struct usbnet *dev, |
| 822 | struct sk_buff *skb, int len) |
| 823 | { |
| 824 | struct sk_buff *new_skb; |
| 825 | |
| 826 | /* clone skb */ |
| 827 | new_skb = skb_clone(skb, GFP_ATOMIC); |
| 828 | |
| 829 | /* remove len bytes from original */ |
| 830 | skb_pull(skb, len); |
| 831 | |
| 832 | /* trim next packet to it's length */ |
| 833 | if (new_skb) { |
| 834 | skb_trim(new_skb, len); |
| 835 | } else { |
| 836 | if (netif_msg_rx_err(dev)) |
| 837 | netdev_err(dev->net, "failed to get skb\n"); |
| 838 | dev->net->stats.rx_dropped++; |
| 839 | } |
| 840 | |
| 841 | return new_skb; |
| 842 | } |
| 843 | |
| 844 | /* ---------------------------- Receive data path ----------------------*/ |
| 845 | static int sierra_net_rx_fixup(struct usbnet *dev, struct sk_buff *skb) |
| 846 | { |
| 847 | int err; |
| 848 | struct hip_hdr hh; |
| 849 | struct sk_buff *new_skb; |
| 850 | |
| 851 | dev_dbg(&dev->udev->dev, "%s", __func__); |
| 852 | |
| 853 | /* could contain multiple packets */ |
| 854 | while (likely(skb->len)) { |
| 855 | err = parse_hip(skb->data, skb->len, &hh); |
| 856 | if (err) { |
| 857 | if (netif_msg_rx_err(dev)) |
| 858 | netdev_err(dev->net, "Invalid HIP header %d\n", |
| 859 | err); |
| 860 | /* dev->net->stats.rx_errors incremented by caller */ |
| 861 | dev->net->stats.rx_length_errors++; |
| 862 | return 0; |
| 863 | } |
| 864 | |
| 865 | /* Validate Extended HIP header */ |
| 866 | if (!hh.extmsgid.is_present |
| 867 | || hh.extmsgid.word != SIERRA_NET_HIP_EXT_IP_IN_ID) { |
| 868 | if (netif_msg_rx_err(dev)) |
| 869 | netdev_err(dev->net, "HIP/ETH: Invalid pkt\n"); |
| 870 | |
| 871 | dev->net->stats.rx_frame_errors++; |
| 872 | /* dev->net->stats.rx_errors incremented by caller */; |
| 873 | return 0; |
| 874 | } |
| 875 | |
| 876 | skb_pull(skb, hh.hdrlen); |
| 877 | |
| 878 | /* We are going to accept this packet, prepare it */ |
| 879 | memcpy(skb->data, sierra_net_get_private(dev)->ethr_hdr_tmpl, |
| 880 | ETH_HLEN); |
| 881 | |
| 882 | /* Last packet in batch handled by usbnet */ |
| 883 | if (hh.payload_len.word == skb->len) |
| 884 | return 1; |
| 885 | |
| 886 | new_skb = sierra_net_skb_clone(dev, skb, hh.payload_len.word); |
| 887 | if (new_skb) |
| 888 | usbnet_skb_return(dev, new_skb); |
| 889 | |
| 890 | } /* while */ |
| 891 | |
| 892 | return 0; |
| 893 | } |
| 894 | |
| 895 | /* ---------------------------- Transmit data path ----------------------*/ |
| 896 | struct sk_buff *sierra_net_tx_fixup(struct usbnet *dev, struct sk_buff *skb, |
| 897 | gfp_t flags) |
| 898 | { |
| 899 | struct sierra_net_data *priv = sierra_net_get_private(dev); |
| 900 | u16 len; |
| 901 | bool need_tail; |
| 902 | |
| 903 | dev_dbg(&dev->udev->dev, "%s", __func__); |
| 904 | if (priv->link_up && check_ethip_packet(skb, dev) && is_ip(skb)) { |
| 905 | /* enough head room as is? */ |
| 906 | if (SIERRA_NET_HIP_EXT_HDR_LEN <= skb_headroom(skb)) { |
| 907 | /* Save the Eth/IP length and set up HIP hdr */ |
| 908 | len = skb->len; |
| 909 | skb_push(skb, SIERRA_NET_HIP_EXT_HDR_LEN); |
| 910 | /* Handle ZLP issue */ |
| 911 | need_tail = ((len + SIERRA_NET_HIP_EXT_HDR_LEN) |
| 912 | % dev->maxpacket == 0); |
| 913 | if (need_tail) { |
| 914 | if (unlikely(skb_tailroom(skb) == 0)) { |
| 915 | netdev_err(dev->net, "tx_fixup:" |
| 916 | "no room for packet\n"); |
| 917 | dev_kfree_skb_any(skb); |
| 918 | return NULL; |
| 919 | } else { |
| 920 | skb->data[skb->len] = 0; |
| 921 | __skb_put(skb, 1); |
| 922 | len = len + 1; |
| 923 | } |
| 924 | } |
| 925 | build_hip(skb->data, len, priv); |
| 926 | return skb; |
| 927 | } else { |
| 928 | /* |
| 929 | * compensate in the future if necessary |
| 930 | */ |
| 931 | netdev_err(dev->net, "tx_fixup: no room for HIP\n"); |
| 932 | } /* headroom */ |
| 933 | } |
| 934 | |
| 935 | if (!priv->link_up) |
| 936 | dev->net->stats.tx_carrier_errors++; |
| 937 | |
| 938 | /* tx_dropped incremented by usbnet */ |
| 939 | |
| 940 | /* filter the packet out, release it */ |
| 941 | dev_kfree_skb_any(skb); |
| 942 | return NULL; |
| 943 | } |
| 944 | |
| 945 | static const u8 sierra_net_ifnum_list[] = { 7, 10, 11 }; |
| 946 | static const struct sierra_net_info_data sierra_net_info_data_68A3 = { |
| 947 | .rx_urb_size = 8 * 1024, |
| 948 | .whitelist = { |
| 949 | .infolen = ARRAY_SIZE(sierra_net_ifnum_list), |
| 950 | .ifaceinfo = sierra_net_ifnum_list |
| 951 | } |
| 952 | }; |
| 953 | |
| 954 | static const struct driver_info sierra_net_info_68A3 = { |
| 955 | .description = "Sierra Wireless USB-to-WWAN Modem", |
| 956 | .flags = FLAG_WWAN | FLAG_SEND_ZLP, |
| 957 | .bind = sierra_net_bind, |
| 958 | .unbind = sierra_net_unbind, |
| 959 | .status = sierra_net_status, |
| 960 | .rx_fixup = sierra_net_rx_fixup, |
| 961 | .tx_fixup = sierra_net_tx_fixup, |
| 962 | .data = (unsigned long)&sierra_net_info_data_68A3, |
| 963 | }; |
| 964 | |
| 965 | static const struct usb_device_id products[] = { |
| 966 | {USB_DEVICE(0x1199, 0x68A3), /* Sierra Wireless USB-to-WWAN modem */ |
| 967 | .driver_info = (unsigned long) &sierra_net_info_68A3}, |
| 968 | |
| 969 | {}, /* last item */ |
| 970 | }; |
| 971 | MODULE_DEVICE_TABLE(usb, products); |
| 972 | |
| 973 | /* We are based on usbnet, so let it handle the USB driver specifics */ |
| 974 | static struct usb_driver sierra_net_driver = { |
| 975 | .name = "sierra_net", |
| 976 | .id_table = products, |
| 977 | .probe = usbnet_probe, |
| 978 | .disconnect = usbnet_disconnect, |
| 979 | .suspend = usbnet_suspend, |
| 980 | .resume = usbnet_resume, |
| 981 | .no_dynamic_id = 1, |
| 982 | }; |
| 983 | |
| 984 | static int __init sierra_net_init(void) |
| 985 | { |
| 986 | BUILD_BUG_ON(FIELD_SIZEOF(struct usbnet, data) |
| 987 | < sizeof(struct cdc_state)); |
| 988 | |
| 989 | return usb_register(&sierra_net_driver); |
| 990 | } |
| 991 | |
| 992 | static void __exit sierra_net_exit(void) |
| 993 | { |
| 994 | usb_deregister(&sierra_net_driver); |
| 995 | } |
| 996 | |
| 997 | module_exit(sierra_net_exit); |
| 998 | module_init(sierra_net_init); |
| 999 | |
| 1000 | MODULE_AUTHOR(DRIVER_AUTHOR); |
| 1001 | MODULE_DESCRIPTION(DRIVER_DESC); |
| 1002 | MODULE_VERSION(DRIVER_VERSION); |
| 1003 | MODULE_LICENSE("GPL"); |