linux/drivers/net/wireless/zydas/zd1201.c
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   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 *      Driver for ZyDAS zd1201 based wireless USB devices.
   4 *
   5 *      Copyright (c) 2004, 2005 Jeroen Vreeken (pe1rxq@amsat.org)
   6 *
   7 *      Parts of this driver have been derived from a wlan-ng version
   8 *      modified by ZyDAS. They also made documentation available, thanks!
   9 *      Copyright (C) 1999 AbsoluteValue Systems, Inc.  All Rights Reserved.
  10 */
  11
  12#include <linux/module.h>
  13#include <linux/usb.h>
  14#include <linux/slab.h>
  15#include <linux/netdevice.h>
  16#include <linux/etherdevice.h>
  17#include <linux/wireless.h>
  18#include <net/cfg80211.h>
  19#include <net/iw_handler.h>
  20#include <linux/string.h>
  21#include <linux/if_arp.h>
  22#include <linux/firmware.h>
  23#include "zd1201.h"
  24
  25static const struct usb_device_id zd1201_table[] = {
  26        {USB_DEVICE(0x0586, 0x3400)}, /* Peabird Wireless USB Adapter */
  27        {USB_DEVICE(0x0ace, 0x1201)}, /* ZyDAS ZD1201 Wireless USB Adapter */
  28        {USB_DEVICE(0x050d, 0x6051)}, /* Belkin F5D6051 usb  adapter */
  29        {USB_DEVICE(0x0db0, 0x6823)}, /* MSI UB11B usb  adapter */
  30        {USB_DEVICE(0x1044, 0x8004)}, /* Gigabyte GN-WLBZ101 */
  31        {USB_DEVICE(0x1044, 0x8005)}, /* GIGABYTE GN-WLBZ201 usb adapter */
  32        {}
  33};
  34
  35static int ap;  /* Are we an AP or a normal station? */
  36
  37#define ZD1201_VERSION  "0.15"
  38
  39MODULE_AUTHOR("Jeroen Vreeken <pe1rxq@amsat.org>");
  40MODULE_DESCRIPTION("Driver for ZyDAS ZD1201 based USB Wireless adapters");
  41MODULE_VERSION(ZD1201_VERSION);
  42MODULE_LICENSE("GPL");
  43module_param(ap, int, 0);
  44MODULE_PARM_DESC(ap, "If non-zero Access Point firmware will be loaded");
  45MODULE_DEVICE_TABLE(usb, zd1201_table);
  46
  47
  48static int zd1201_fw_upload(struct usb_device *dev, int apfw)
  49{
  50        const struct firmware *fw_entry;
  51        const char *data;
  52        unsigned long len;
  53        int err;
  54        unsigned char ret;
  55        char *buf;
  56        char *fwfile;
  57
  58        if (apfw)
  59                fwfile = "zd1201-ap.fw";
  60        else
  61                fwfile = "zd1201.fw";
  62
  63        err = request_firmware(&fw_entry, fwfile, &dev->dev);
  64        if (err) {
  65                dev_err(&dev->dev, "Failed to load %s firmware file!\n", fwfile);
  66                dev_err(&dev->dev, "Make sure the hotplug firmware loader is installed.\n");
  67                dev_err(&dev->dev, "Goto http://linux-lc100020.sourceforge.net for more info.\n");
  68                return err;
  69        }
  70
  71        data = fw_entry->data;
  72        len = fw_entry->size;
  73
  74        buf = kmalloc(1024, GFP_ATOMIC);
  75        if (!buf) {
  76                err = -ENOMEM;
  77                goto exit;
  78        }
  79        
  80        while (len > 0) {
  81                int translen = (len > 1024) ? 1024 : len;
  82                memcpy(buf, data, translen);
  83
  84                err = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 0,
  85                    USB_DIR_OUT | 0x40, 0, 0, buf, translen,
  86                    ZD1201_FW_TIMEOUT);
  87                if (err < 0)
  88                        goto exit;
  89
  90                len -= translen;
  91                data += translen;
  92        }
  93                                        
  94        err = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 0x2,
  95            USB_DIR_OUT | 0x40, 0, 0, NULL, 0, ZD1201_FW_TIMEOUT);
  96        if (err < 0)
  97                goto exit;
  98
  99        err = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), 0x4,
 100            USB_DIR_IN | 0x40, 0, 0, buf, sizeof(ret), ZD1201_FW_TIMEOUT);
 101        if (err < 0)
 102                goto exit;
 103
 104        memcpy(&ret, buf, sizeof(ret));
 105
 106        if (ret & 0x80) {
 107                err = -EIO;
 108                goto exit;
 109        }
 110
 111        err = 0;
 112exit:
 113        kfree(buf);
 114        release_firmware(fw_entry);
 115        return err;
 116}
 117
 118MODULE_FIRMWARE("zd1201-ap.fw");
 119MODULE_FIRMWARE("zd1201.fw");
 120
 121static void zd1201_usbfree(struct urb *urb)
 122{
 123        struct zd1201 *zd = urb->context;
 124
 125        switch(urb->status) {
 126                case -EILSEQ:
 127                case -ENODEV:
 128                case -ETIME:
 129                case -ENOENT:
 130                case -EPIPE:
 131                case -EOVERFLOW:
 132                case -ESHUTDOWN:
 133                        dev_warn(&zd->usb->dev, "%s: urb failed: %d\n", 
 134                            zd->dev->name, urb->status);
 135        }
 136
 137        kfree(urb->transfer_buffer);
 138        usb_free_urb(urb);
 139}
 140
 141/* cmdreq message: 
 142        u32 type
 143        u16 cmd
 144        u16 parm0
 145        u16 parm1
 146        u16 parm2
 147        u8  pad[4]
 148
 149        total: 4 + 2 + 2 + 2 + 2 + 4 = 16
 150*/
 151static int zd1201_docmd(struct zd1201 *zd, int cmd, int parm0,
 152                        int parm1, int parm2)
 153{
 154        unsigned char *command;
 155        int ret;
 156        struct urb *urb;
 157
 158        command = kmalloc(16, GFP_ATOMIC);
 159        if (!command)
 160                return -ENOMEM;
 161
 162        *((__le32*)command) = cpu_to_le32(ZD1201_USB_CMDREQ);
 163        *((__le16*)&command[4]) = cpu_to_le16(cmd);
 164        *((__le16*)&command[6]) = cpu_to_le16(parm0);
 165        *((__le16*)&command[8]) = cpu_to_le16(parm1);
 166        *((__le16*)&command[10])= cpu_to_le16(parm2);
 167
 168        urb = usb_alloc_urb(0, GFP_ATOMIC);
 169        if (!urb) {
 170                kfree(command);
 171                return -ENOMEM;
 172        }
 173        usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out2),
 174                          command, 16, zd1201_usbfree, zd);
 175        ret = usb_submit_urb(urb, GFP_ATOMIC);
 176        if (ret) {
 177                kfree(command);
 178                usb_free_urb(urb);
 179        }
 180
 181        return ret;
 182}
 183
 184/* Callback after sending out a packet */
 185static void zd1201_usbtx(struct urb *urb)
 186{
 187        struct zd1201 *zd = urb->context;
 188        netif_wake_queue(zd->dev);
 189}
 190
 191/* Incoming data */
 192static void zd1201_usbrx(struct urb *urb)
 193{
 194        struct zd1201 *zd = urb->context;
 195        int free = 0;
 196        unsigned char *data = urb->transfer_buffer;
 197        struct sk_buff *skb;
 198        unsigned char type;
 199
 200        if (!zd)
 201                return;
 202
 203        switch(urb->status) {
 204                case -EILSEQ:
 205                case -ENODEV:
 206                case -ETIME:
 207                case -ENOENT:
 208                case -EPIPE:
 209                case -EOVERFLOW:
 210                case -ESHUTDOWN:
 211                        dev_warn(&zd->usb->dev, "%s: rx urb failed: %d\n",
 212                            zd->dev->name, urb->status);
 213                        free = 1;
 214                        goto exit;
 215        }
 216        
 217        if (urb->status != 0 || urb->actual_length == 0)
 218                goto resubmit;
 219
 220        type = data[0];
 221        if (type == ZD1201_PACKET_EVENTSTAT || type == ZD1201_PACKET_RESOURCE) {
 222                memcpy(zd->rxdata, data, urb->actual_length);
 223                zd->rxlen = urb->actual_length;
 224                zd->rxdatas = 1;
 225                wake_up(&zd->rxdataq);
 226        }
 227        /* Info frame */
 228        if (type == ZD1201_PACKET_INQUIRE) {
 229                int i = 0;
 230                unsigned short infotype, copylen;
 231                infotype = le16_to_cpu(*(__le16*)&data[6]);
 232
 233                if (infotype == ZD1201_INF_LINKSTATUS) {
 234                        short linkstatus;
 235
 236                        linkstatus = le16_to_cpu(*(__le16*)&data[8]);
 237                        switch(linkstatus) {
 238                                case 1:
 239                                        netif_carrier_on(zd->dev);
 240                                        break;
 241                                case 2:
 242                                        netif_carrier_off(zd->dev);
 243                                        break;
 244                                case 3:
 245                                        netif_carrier_off(zd->dev);
 246                                        break;
 247                                case 4:
 248                                        netif_carrier_on(zd->dev);
 249                                        break;
 250                                default:
 251                                        netif_carrier_off(zd->dev);
 252                        }
 253                        goto resubmit;
 254                }
 255                if (infotype == ZD1201_INF_ASSOCSTATUS) {
 256                        short status = le16_to_cpu(*(__le16*)(data+8));
 257                        int event;
 258                        union iwreq_data wrqu;
 259
 260                        switch (status) {
 261                                case ZD1201_ASSOCSTATUS_STAASSOC:
 262                                case ZD1201_ASSOCSTATUS_REASSOC:
 263                                        event = IWEVREGISTERED;
 264                                        break;
 265                                case ZD1201_ASSOCSTATUS_DISASSOC:
 266                                case ZD1201_ASSOCSTATUS_ASSOCFAIL:
 267                                case ZD1201_ASSOCSTATUS_AUTHFAIL:
 268                                default:
 269                                        event = IWEVEXPIRED;
 270                        }
 271                        memcpy(wrqu.addr.sa_data, data+10, ETH_ALEN);
 272                        wrqu.addr.sa_family = ARPHRD_ETHER;
 273
 274                        /* Send event to user space */
 275                        wireless_send_event(zd->dev, event, &wrqu, NULL);
 276
 277                        goto resubmit;
 278                }
 279                if (infotype == ZD1201_INF_AUTHREQ) {
 280                        union iwreq_data wrqu;
 281
 282                        memcpy(wrqu.addr.sa_data, data+8, ETH_ALEN);
 283                        wrqu.addr.sa_family = ARPHRD_ETHER;
 284                        /* There isn't a event that trully fits this request.
 285                           We assume that userspace will be smart enough to
 286                           see a new station being expired and sends back a
 287                           authstation ioctl to authorize it. */
 288                        wireless_send_event(zd->dev, IWEVEXPIRED, &wrqu, NULL);
 289                        goto resubmit;
 290                }
 291                /* Other infotypes are handled outside this handler */
 292                zd->rxlen = 0;
 293                while (i < urb->actual_length) {
 294                        copylen = le16_to_cpu(*(__le16*)&data[i+2]);
 295                        /* Sanity check, sometimes we get junk */
 296                        if (copylen+zd->rxlen > sizeof(zd->rxdata))
 297                                break;
 298                        memcpy(zd->rxdata+zd->rxlen, data+i+4, copylen);
 299                        zd->rxlen += copylen;
 300                        i += 64;
 301                }
 302                if (i >= urb->actual_length) {
 303                        zd->rxdatas = 1;
 304                        wake_up(&zd->rxdataq);
 305                }
 306                goto  resubmit;
 307        }
 308        /* Actual data */
 309        if (data[urb->actual_length-1] == ZD1201_PACKET_RXDATA) {
 310                int datalen = urb->actual_length-1;
 311                unsigned short len, fc, seq;
 312
 313                len = ntohs(*(__be16 *)&data[datalen-2]);
 314                if (len>datalen)
 315                        len=datalen;
 316                fc = le16_to_cpu(*(__le16 *)&data[datalen-16]);
 317                seq = le16_to_cpu(*(__le16 *)&data[datalen-24]);
 318
 319                if (zd->monitor) {
 320                        if (datalen < 24)
 321                                goto resubmit;
 322                        if (!(skb = dev_alloc_skb(datalen+24)))
 323                                goto resubmit;
 324                        
 325                        skb_put_data(skb, &data[datalen - 16], 2);
 326                        skb_put_data(skb, &data[datalen - 2], 2);
 327                        skb_put_data(skb, &data[datalen - 14], 6);
 328                        skb_put_data(skb, &data[datalen - 22], 6);
 329                        skb_put_data(skb, &data[datalen - 8], 6);
 330                        skb_put_data(skb, &data[datalen - 24], 2);
 331                        skb_put_data(skb, data, len);
 332                        skb->protocol = eth_type_trans(skb, zd->dev);
 333                        zd->dev->stats.rx_packets++;
 334                        zd->dev->stats.rx_bytes += skb->len;
 335                        netif_rx(skb);
 336                        goto resubmit;
 337                }
 338                        
 339                if ((seq & IEEE80211_SCTL_FRAG) ||
 340                    (fc & IEEE80211_FCTL_MOREFRAGS)) {
 341                        struct zd1201_frag *frag = NULL;
 342                        char *ptr;
 343
 344                        if (datalen<14)
 345                                goto resubmit;
 346                        if ((seq & IEEE80211_SCTL_FRAG) == 0) {
 347                                frag = kmalloc(sizeof(*frag), GFP_ATOMIC);
 348                                if (!frag)
 349                                        goto resubmit;
 350                                skb = dev_alloc_skb(IEEE80211_MAX_DATA_LEN +14+2);
 351                                if (!skb) {
 352                                        kfree(frag);
 353                                        goto resubmit;
 354                                }
 355                                frag->skb = skb;
 356                                frag->seq = seq & IEEE80211_SCTL_SEQ;
 357                                skb_reserve(skb, 2);
 358                                skb_put_data(skb, &data[datalen - 14], 12);
 359                                skb_put_data(skb, &data[6], 2);
 360                                skb_put_data(skb, data + 8, len);
 361                                hlist_add_head(&frag->fnode, &zd->fraglist);
 362                                goto resubmit;
 363                        }
 364                        hlist_for_each_entry(frag, &zd->fraglist, fnode)
 365                                if (frag->seq == (seq&IEEE80211_SCTL_SEQ))
 366                                        break;
 367                        if (!frag)
 368                                goto resubmit;
 369                        skb = frag->skb;
 370                        ptr = skb_put(skb, len);
 371                        if (ptr)
 372                                memcpy(ptr, data+8, len);
 373                        if (fc & IEEE80211_FCTL_MOREFRAGS)
 374                                goto resubmit;
 375                        hlist_del_init(&frag->fnode);
 376                        kfree(frag);
 377                } else {
 378                        if (datalen<14)
 379                                goto resubmit;
 380                        skb = dev_alloc_skb(len + 14 + 2);
 381                        if (!skb)
 382                                goto resubmit;
 383                        skb_reserve(skb, 2);
 384                        skb_put_data(skb, &data[datalen - 14], 12);
 385                        skb_put_data(skb, &data[6], 2);
 386                        skb_put_data(skb, data + 8, len);
 387                }
 388                skb->protocol = eth_type_trans(skb, zd->dev);
 389                zd->dev->stats.rx_packets++;
 390                zd->dev->stats.rx_bytes += skb->len;
 391                netif_rx(skb);
 392        }
 393resubmit:
 394        memset(data, 0, ZD1201_RXSIZE);
 395
 396        urb->status = 0;
 397        urb->dev = zd->usb;
 398        if(usb_submit_urb(urb, GFP_ATOMIC))
 399                free = 1;
 400
 401exit:
 402        if (free) {
 403                zd->rxlen = 0;
 404                zd->rxdatas = 1;
 405                wake_up(&zd->rxdataq);
 406                kfree(urb->transfer_buffer);
 407        }
 408}
 409
 410static int zd1201_getconfig(struct zd1201 *zd, int rid, void *riddata,
 411        unsigned int riddatalen)
 412{
 413        int err;
 414        int i = 0;
 415        int code;
 416        int rid_fid;
 417        int length;
 418        unsigned char *pdata;
 419
 420        zd->rxdatas = 0;
 421        err = zd1201_docmd(zd, ZD1201_CMDCODE_ACCESS, rid, 0, 0);
 422        if (err)
 423                return err;
 424
 425        wait_event_interruptible(zd->rxdataq, zd->rxdatas);
 426        if (!zd->rxlen)
 427                return -EIO;
 428
 429        code = le16_to_cpu(*(__le16*)(&zd->rxdata[4]));
 430        rid_fid = le16_to_cpu(*(__le16*)(&zd->rxdata[6]));
 431        length = le16_to_cpu(*(__le16*)(&zd->rxdata[8]));
 432        if (length > zd->rxlen)
 433                length = zd->rxlen-6;
 434
 435        /* If access bit is not on, then error */
 436        if ((code & ZD1201_ACCESSBIT) != ZD1201_ACCESSBIT || rid_fid != rid )
 437                return -EINVAL;
 438
 439        /* Not enough buffer for allocating data */
 440        if (riddatalen != (length - 4)) {
 441                dev_dbg(&zd->usb->dev, "riddatalen mismatches, expected=%u, (packet=%u) length=%u, rid=0x%04X, rid_fid=0x%04X\n",
 442                    riddatalen, zd->rxlen, length, rid, rid_fid);
 443                return -ENODATA;
 444        }
 445
 446        zd->rxdatas = 0;
 447        /* Issue SetRxRid commnd */                     
 448        err = zd1201_docmd(zd, ZD1201_CMDCODE_SETRXRID, rid, 0, length);
 449        if (err)
 450                return err;
 451
 452        /* Receive RID record from resource packets */
 453        wait_event_interruptible(zd->rxdataq, zd->rxdatas);
 454        if (!zd->rxlen)
 455                return -EIO;
 456
 457        if (zd->rxdata[zd->rxlen - 1] != ZD1201_PACKET_RESOURCE) {
 458                dev_dbg(&zd->usb->dev, "Packet type mismatch: 0x%x not 0x3\n",
 459                    zd->rxdata[zd->rxlen-1]);
 460                return -EINVAL;
 461        }
 462
 463        /* Set the data pointer and received data length */
 464        pdata = zd->rxdata;
 465        length = zd->rxlen;
 466
 467        do {
 468                int actual_length;
 469
 470                actual_length = (length > 64) ? 64 : length;
 471
 472                if (pdata[0] != 0x3) {
 473                        dev_dbg(&zd->usb->dev, "Rx Resource packet type error: %02X\n",
 474                            pdata[0]);
 475                        return -EINVAL;
 476                }
 477
 478                if (actual_length != 64) {
 479                        /* Trim the last packet type byte */
 480                        actual_length--;
 481                }
 482
 483                /* Skip the 4 bytes header (RID length and RID) */
 484                if (i == 0) {
 485                        pdata += 8;
 486                        actual_length -= 8;
 487                } else {
 488                        pdata += 4;
 489                        actual_length -= 4;
 490                }
 491                
 492                memcpy(riddata, pdata, actual_length);
 493                riddata += actual_length;
 494                pdata += actual_length;
 495                length -= 64;
 496                i++;
 497        } while (length > 0);
 498
 499        return 0;
 500}
 501
 502/*
 503 *      resreq:
 504 *              byte    type
 505 *              byte    sequence
 506 *              u16     reserved
 507 *              byte    data[12]
 508 *      total: 16
 509 */
 510static int zd1201_setconfig(struct zd1201 *zd, int rid, void *buf, int len, int wait)
 511{
 512        int err;
 513        unsigned char *request;
 514        int reqlen;
 515        char seq=0;
 516        struct urb *urb;
 517        gfp_t gfp_mask = wait ? GFP_NOIO : GFP_ATOMIC;
 518
 519        len += 4;                       /* first 4 are for header */
 520
 521        zd->rxdatas = 0;
 522        zd->rxlen = 0;
 523        for (seq=0; len > 0; seq++) {
 524                request = kmalloc(16, gfp_mask);
 525                if (!request)
 526                        return -ENOMEM;
 527                urb = usb_alloc_urb(0, gfp_mask);
 528                if (!urb) {
 529                        kfree(request);
 530                        return -ENOMEM;
 531                }
 532                memset(request, 0, 16);
 533                reqlen = len>12 ? 12 : len;
 534                request[0] = ZD1201_USB_RESREQ;
 535                request[1] = seq;
 536                request[2] = 0;
 537                request[3] = 0;
 538                if (request[1] == 0) {
 539                        /* add header */
 540                        *(__le16*)&request[4] = cpu_to_le16((len-2+1)/2);
 541                        *(__le16*)&request[6] = cpu_to_le16(rid);
 542                        memcpy(request+8, buf, reqlen-4);
 543                        buf += reqlen-4;
 544                } else {
 545                        memcpy(request+4, buf, reqlen);
 546                        buf += reqlen;
 547                }
 548
 549                len -= reqlen;
 550
 551                usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb,
 552                    zd->endp_out2), request, 16, zd1201_usbfree, zd);
 553                err = usb_submit_urb(urb, gfp_mask);
 554                if (err)
 555                        goto err;
 556        }
 557
 558        request = kmalloc(16, gfp_mask);
 559        if (!request)
 560                return -ENOMEM;
 561        urb = usb_alloc_urb(0, gfp_mask);
 562        if (!urb) {
 563                kfree(request);
 564                return -ENOMEM;
 565        }
 566        *((__le32*)request) = cpu_to_le32(ZD1201_USB_CMDREQ);
 567        *((__le16*)&request[4]) = 
 568            cpu_to_le16(ZD1201_CMDCODE_ACCESS|ZD1201_ACCESSBIT);
 569        *((__le16*)&request[6]) = cpu_to_le16(rid);
 570        *((__le16*)&request[8]) = cpu_to_le16(0);
 571        *((__le16*)&request[10]) = cpu_to_le16(0);
 572        usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out2),
 573             request, 16, zd1201_usbfree, zd);
 574        err = usb_submit_urb(urb, gfp_mask);
 575        if (err)
 576                goto err;
 577        
 578        if (wait) {
 579                wait_event_interruptible(zd->rxdataq, zd->rxdatas);
 580                if (!zd->rxlen || le16_to_cpu(*(__le16*)&zd->rxdata[6]) != rid) {
 581                        dev_dbg(&zd->usb->dev, "wrong or no RID received\n");
 582                }
 583        }
 584
 585        return 0;
 586err:
 587        kfree(request);
 588        usb_free_urb(urb);
 589        return err;
 590}
 591
 592static inline int zd1201_getconfig16(struct zd1201 *zd, int rid, short *val)
 593{
 594        int err;
 595        __le16 zdval;
 596
 597        err = zd1201_getconfig(zd, rid, &zdval, sizeof(__le16));
 598        if (err)
 599                return err;
 600        *val = le16_to_cpu(zdval);
 601        return 0;
 602}
 603
 604static inline int zd1201_setconfig16(struct zd1201 *zd, int rid, short val)
 605{
 606        __le16 zdval = cpu_to_le16(val);
 607        return (zd1201_setconfig(zd, rid, &zdval, sizeof(__le16), 1));
 608}
 609
 610static int zd1201_drvr_start(struct zd1201 *zd)
 611{
 612        int err, i;
 613        short max;
 614        __le16 zdmax;
 615        unsigned char *buffer;
 616
 617        buffer = kzalloc(ZD1201_RXSIZE, GFP_KERNEL);
 618        if (!buffer)
 619                return -ENOMEM;
 620
 621        usb_fill_bulk_urb(zd->rx_urb, zd->usb, 
 622            usb_rcvbulkpipe(zd->usb, zd->endp_in), buffer, ZD1201_RXSIZE,
 623            zd1201_usbrx, zd);
 624
 625        err = usb_submit_urb(zd->rx_urb, GFP_KERNEL);
 626        if (err)
 627                goto err_buffer;
 628
 629        err = zd1201_docmd(zd, ZD1201_CMDCODE_INIT, 0, 0, 0);
 630        if (err)
 631                goto err_urb;
 632
 633        err = zd1201_getconfig(zd, ZD1201_RID_CNFMAXTXBUFFERNUMBER, &zdmax,
 634            sizeof(__le16));
 635        if (err)
 636                goto err_urb;
 637
 638        max = le16_to_cpu(zdmax);
 639        for (i=0; i<max; i++) {
 640                err = zd1201_docmd(zd, ZD1201_CMDCODE_ALLOC, 1514, 0, 0);
 641                if (err)
 642                        goto err_urb;
 643        }
 644
 645        return 0;
 646
 647err_urb:
 648        usb_kill_urb(zd->rx_urb);
 649        return err;
 650err_buffer:
 651        kfree(buffer);
 652        return err;
 653}
 654
 655/*      Magic alert: The firmware doesn't seem to like the MAC state being
 656 *      toggled in promisc (aka monitor) mode.
 657 *      (It works a number of times, but will halt eventually)
 658 *      So we turn it of before disabling and on after enabling if needed.
 659 */
 660static int zd1201_enable(struct zd1201 *zd)
 661{
 662        int err;
 663
 664        if (zd->mac_enabled)
 665                return 0;
 666
 667        err = zd1201_docmd(zd, ZD1201_CMDCODE_ENABLE, 0, 0, 0);
 668        if (!err)
 669                zd->mac_enabled = 1;
 670
 671        if (zd->monitor)
 672                err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 1);
 673
 674        return err;
 675}
 676
 677static int zd1201_disable(struct zd1201 *zd)
 678{
 679        int err;
 680
 681        if (!zd->mac_enabled)
 682                return 0;
 683        if (zd->monitor) {
 684                err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 0);
 685                if (err)
 686                        return err;
 687        }
 688
 689        err = zd1201_docmd(zd, ZD1201_CMDCODE_DISABLE, 0, 0, 0);
 690        if (!err)
 691                zd->mac_enabled = 0;
 692        return err;
 693}
 694
 695static int zd1201_mac_reset(struct zd1201 *zd)
 696{
 697        if (!zd->mac_enabled)
 698                return 0;
 699        zd1201_disable(zd);
 700        return zd1201_enable(zd);
 701}
 702
 703static int zd1201_join(struct zd1201 *zd, char *essid, int essidlen)
 704{
 705        int err, val;
 706        char buf[IW_ESSID_MAX_SIZE+2];
 707
 708        err = zd1201_disable(zd);
 709        if (err)
 710                return err;
 711
 712        val = ZD1201_CNFAUTHENTICATION_OPENSYSTEM;
 713        val |= ZD1201_CNFAUTHENTICATION_SHAREDKEY;
 714        err = zd1201_setconfig16(zd, ZD1201_RID_CNFAUTHENTICATION, val);
 715        if (err)
 716                return err;
 717
 718        *(__le16 *)buf = cpu_to_le16(essidlen);
 719        memcpy(buf+2, essid, essidlen);
 720        if (!zd->ap) {  /* Normal station */
 721                err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID, buf,
 722                    IW_ESSID_MAX_SIZE+2, 1);
 723                if (err)
 724                        return err;
 725        } else {        /* AP */
 726                err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNSSID, buf,
 727                    IW_ESSID_MAX_SIZE+2, 1);
 728                if (err)
 729                        return err;
 730        }
 731
 732        err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNMACADDR, 
 733            zd->dev->dev_addr, zd->dev->addr_len, 1);
 734        if (err)
 735                return err;
 736
 737        err = zd1201_enable(zd);
 738        if (err)
 739                return err;
 740
 741        msleep(100);
 742        return 0;
 743}
 744
 745static int zd1201_net_open(struct net_device *dev)
 746{
 747        struct zd1201 *zd = netdev_priv(dev);
 748
 749        /* Start MAC with wildcard if no essid set */
 750        if (!zd->mac_enabled)
 751                zd1201_join(zd, zd->essid, zd->essidlen);
 752        netif_start_queue(dev);
 753
 754        return 0;
 755}
 756
 757static int zd1201_net_stop(struct net_device *dev)
 758{
 759        netif_stop_queue(dev);
 760        return 0;
 761}
 762
 763/*
 764        RFC 1042 encapsulates Ethernet frames in 802.11 frames
 765        by prefixing them with 0xaa, 0xaa, 0x03) followed by a SNAP OID of 0
 766        (0x00, 0x00, 0x00). Zd requires an additional padding, copy
 767        of ethernet addresses, length of the standard RFC 1042 packet
 768        and a command byte (which is nul for tx).
 769        
 770        tx frame (from Wlan NG):
 771        RFC 1042:
 772                llc             0xAA 0xAA 0x03 (802.2 LLC)
 773                snap            0x00 0x00 0x00 (Ethernet encapsulated)
 774                type            2 bytes, Ethernet type field
 775                payload         (minus eth header)
 776        Zydas specific:
 777                padding         1B if (skb->len+8+1)%64==0
 778                Eth MAC addr    12 bytes, Ethernet MAC addresses
 779                length          2 bytes, RFC 1042 packet length 
 780                                (llc+snap+type+payload)
 781                zd              1 null byte, zd1201 packet type
 782 */
 783static netdev_tx_t zd1201_hard_start_xmit(struct sk_buff *skb,
 784                                                struct net_device *dev)
 785{
 786        struct zd1201 *zd = netdev_priv(dev);
 787        unsigned char *txbuf = zd->txdata;
 788        int txbuflen, pad = 0, err;
 789        struct urb *urb = zd->tx_urb;
 790
 791        if (!zd->mac_enabled || zd->monitor) {
 792                dev->stats.tx_dropped++;
 793                kfree_skb(skb);
 794                return NETDEV_TX_OK;
 795        }
 796        netif_stop_queue(dev);
 797
 798        txbuflen = skb->len + 8 + 1;
 799        if (txbuflen%64 == 0) {
 800                pad = 1;
 801                txbuflen++;
 802        }
 803        txbuf[0] = 0xAA;
 804        txbuf[1] = 0xAA;
 805        txbuf[2] = 0x03;
 806        txbuf[3] = 0x00;        /* rfc1042 */
 807        txbuf[4] = 0x00;
 808        txbuf[5] = 0x00;
 809
 810        skb_copy_from_linear_data_offset(skb, 12, txbuf + 6, skb->len - 12);
 811        if (pad)
 812                txbuf[skb->len-12+6]=0;
 813        skb_copy_from_linear_data(skb, txbuf + skb->len - 12 + 6 + pad, 12);
 814        *(__be16*)&txbuf[skb->len+6+pad] = htons(skb->len-12+6);
 815        txbuf[txbuflen-1] = 0;
 816
 817        usb_fill_bulk_urb(urb, zd->usb, usb_sndbulkpipe(zd->usb, zd->endp_out),
 818            txbuf, txbuflen, zd1201_usbtx, zd);
 819
 820        err = usb_submit_urb(zd->tx_urb, GFP_ATOMIC);
 821        if (err) {
 822                dev->stats.tx_errors++;
 823                netif_start_queue(dev);
 824        } else {
 825                dev->stats.tx_packets++;
 826                dev->stats.tx_bytes += skb->len;
 827        }
 828        kfree_skb(skb);
 829
 830        return NETDEV_TX_OK;
 831}
 832
 833static void zd1201_tx_timeout(struct net_device *dev)
 834{
 835        struct zd1201 *zd = netdev_priv(dev);
 836
 837        if (!zd)
 838                return;
 839        dev_warn(&zd->usb->dev, "%s: TX timeout, shooting down urb\n",
 840            dev->name);
 841        usb_unlink_urb(zd->tx_urb);
 842        dev->stats.tx_errors++;
 843        /* Restart the timeout to quiet the watchdog: */
 844        netif_trans_update(dev); /* prevent tx timeout */
 845}
 846
 847static int zd1201_set_mac_address(struct net_device *dev, void *p)
 848{
 849        struct sockaddr *addr = p;
 850        struct zd1201 *zd = netdev_priv(dev);
 851        int err;
 852
 853        if (!zd)
 854                return -ENODEV;
 855
 856        err = zd1201_setconfig(zd, ZD1201_RID_CNFOWNMACADDR, 
 857            addr->sa_data, dev->addr_len, 1);
 858        if (err)
 859                return err;
 860        memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
 861
 862        return zd1201_mac_reset(zd);
 863}
 864
 865static struct iw_statistics *zd1201_get_wireless_stats(struct net_device *dev)
 866{
 867        struct zd1201 *zd = netdev_priv(dev);
 868
 869        return &zd->iwstats;
 870}
 871
 872static void zd1201_set_multicast(struct net_device *dev)
 873{
 874        struct zd1201 *zd = netdev_priv(dev);
 875        struct netdev_hw_addr *ha;
 876        unsigned char reqbuf[ETH_ALEN*ZD1201_MAXMULTI];
 877        int i;
 878
 879        if (netdev_mc_count(dev) > ZD1201_MAXMULTI)
 880                return;
 881
 882        i = 0;
 883        netdev_for_each_mc_addr(ha, dev)
 884                memcpy(reqbuf + i++ * ETH_ALEN, ha->addr, ETH_ALEN);
 885        zd1201_setconfig(zd, ZD1201_RID_CNFGROUPADDRESS, reqbuf,
 886                         netdev_mc_count(dev) * ETH_ALEN, 0);
 887}
 888
 889static int zd1201_config_commit(struct net_device *dev, 
 890    struct iw_request_info *info, struct iw_point *data, char *essid)
 891{
 892        struct zd1201 *zd = netdev_priv(dev);
 893
 894        return zd1201_mac_reset(zd);
 895}
 896
 897static int zd1201_get_name(struct net_device *dev,
 898    struct iw_request_info *info, char *name, char *extra)
 899{
 900        strcpy(name, "IEEE 802.11b");
 901        return 0;
 902}
 903
 904static int zd1201_set_freq(struct net_device *dev,
 905    struct iw_request_info *info, struct iw_freq *freq, char *extra)
 906{
 907        struct zd1201 *zd = netdev_priv(dev);
 908        short channel = 0;
 909        int err;
 910
 911        if (freq->e == 0)
 912                channel = freq->m;
 913        else
 914                channel = ieee80211_frequency_to_channel(freq->m);
 915
 916        err = zd1201_setconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, channel);
 917        if (err)
 918                return err;
 919
 920        zd1201_mac_reset(zd);
 921
 922        return 0;
 923}
 924
 925static int zd1201_get_freq(struct net_device *dev,
 926    struct iw_request_info *info, struct iw_freq *freq, char *extra)
 927{
 928        struct zd1201 *zd = netdev_priv(dev);
 929        short channel;
 930        int err;
 931
 932        err = zd1201_getconfig16(zd, ZD1201_RID_CNFOWNCHANNEL, &channel);
 933        if (err)
 934                return err;
 935        freq->e = 0;
 936        freq->m = channel;
 937
 938        return 0;
 939}
 940
 941static int zd1201_set_mode(struct net_device *dev,
 942    struct iw_request_info *info, __u32 *mode, char *extra)
 943{
 944        struct zd1201 *zd = netdev_priv(dev);
 945        short porttype, monitor = 0;
 946        unsigned char buffer[IW_ESSID_MAX_SIZE+2];
 947        int err;
 948
 949        if (zd->ap) {
 950                if (*mode != IW_MODE_MASTER)
 951                        return -EINVAL;
 952                return 0;
 953        }
 954
 955        err = zd1201_setconfig16(zd, ZD1201_RID_PROMISCUOUSMODE, 0);
 956        if (err)
 957                return err;
 958        zd->dev->type = ARPHRD_ETHER;
 959        switch(*mode) {
 960                case IW_MODE_MONITOR:
 961                        monitor = 1;
 962                        zd->dev->type = ARPHRD_IEEE80211;
 963                        /* Make sure we are no longer associated with by
 964                           setting an 'impossible' essid.
 965                           (otherwise we mess up firmware)
 966                         */
 967                        zd1201_join(zd, "\0-*#\0", 5);
 968                        /* Put port in pIBSS */
 969                        /* Fall through */
 970                case 8: /* No pseudo-IBSS in wireless extensions (yet) */
 971                        porttype = ZD1201_PORTTYPE_PSEUDOIBSS;
 972                        break;
 973                case IW_MODE_ADHOC:
 974                        porttype = ZD1201_PORTTYPE_IBSS;
 975                        break;
 976                case IW_MODE_INFRA:
 977                        porttype = ZD1201_PORTTYPE_BSS;
 978                        break;
 979                default:
 980                        return -EINVAL;
 981        }
 982
 983        err = zd1201_setconfig16(zd, ZD1201_RID_CNFPORTTYPE, porttype);
 984        if (err)
 985                return err;
 986        if (zd->monitor && !monitor) {
 987                        zd1201_disable(zd);
 988                        *(__le16 *)buffer = cpu_to_le16(zd->essidlen);
 989                        memcpy(buffer+2, zd->essid, zd->essidlen);
 990                        err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID,
 991                            buffer, IW_ESSID_MAX_SIZE+2, 1);
 992                        if (err)
 993                                return err;
 994        }
 995        zd->monitor = monitor;
 996        /* If monitor mode is set we don't actually turn it on here since it
 997         * is done during mac reset anyway (see zd1201_mac_enable).
 998         */
 999        zd1201_mac_reset(zd);
1000
1001        return 0;
1002}
1003
1004static int zd1201_get_mode(struct net_device *dev,
1005    struct iw_request_info *info, __u32 *mode, char *extra)
1006{
1007        struct zd1201 *zd = netdev_priv(dev);
1008        short porttype;
1009        int err;
1010
1011        err = zd1201_getconfig16(zd, ZD1201_RID_CNFPORTTYPE, &porttype);
1012        if (err)
1013                return err;
1014        switch(porttype) {
1015                case ZD1201_PORTTYPE_IBSS:
1016                        *mode = IW_MODE_ADHOC;
1017                        break;
1018                case ZD1201_PORTTYPE_BSS:
1019                        *mode = IW_MODE_INFRA;
1020                        break;
1021                case ZD1201_PORTTYPE_WDS:
1022                        *mode = IW_MODE_REPEAT;
1023                        break;
1024                case ZD1201_PORTTYPE_PSEUDOIBSS:
1025                        *mode = 8;/* No Pseudo-IBSS... */
1026                        break;
1027                case ZD1201_PORTTYPE_AP:
1028                        *mode = IW_MODE_MASTER;
1029                        break;
1030                default:
1031                        dev_dbg(&zd->usb->dev, "Unknown porttype: %d\n",
1032                            porttype);
1033                        *mode = IW_MODE_AUTO;
1034        }
1035        if (zd->monitor)
1036                *mode = IW_MODE_MONITOR;
1037
1038        return 0;
1039}
1040
1041static int zd1201_get_range(struct net_device *dev,
1042    struct iw_request_info *info, struct iw_point *wrq, char *extra)
1043{
1044        struct iw_range *range = (struct iw_range *)extra;
1045
1046        wrq->length = sizeof(struct iw_range);
1047        memset(range, 0, sizeof(struct iw_range));
1048        range->we_version_compiled = WIRELESS_EXT;
1049        range->we_version_source = WIRELESS_EXT;
1050
1051        range->max_qual.qual = 128;
1052        range->max_qual.level = 128;
1053        range->max_qual.noise = 128;
1054        range->max_qual.updated = 7;
1055
1056        range->encoding_size[0] = 5;
1057        range->encoding_size[1] = 13;
1058        range->num_encoding_sizes = 2;
1059        range->max_encoding_tokens = ZD1201_NUMKEYS;
1060
1061        range->num_bitrates = 4;
1062        range->bitrate[0] = 1000000;
1063        range->bitrate[1] = 2000000;
1064        range->bitrate[2] = 5500000;
1065        range->bitrate[3] = 11000000;
1066
1067        range->min_rts = 0;
1068        range->min_frag = ZD1201_FRAGMIN;
1069        range->max_rts = ZD1201_RTSMAX;
1070        range->min_frag = ZD1201_FRAGMAX;
1071
1072        return 0;
1073}
1074
1075/*      Little bit of magic here: we only get the quality if we poll
1076 *      for it, and we never get an actual request to trigger such
1077 *      a poll. Therefore we 'assume' that the user will soon ask for
1078 *      the stats after asking the bssid.
1079 */
1080static int zd1201_get_wap(struct net_device *dev,
1081    struct iw_request_info *info, struct sockaddr *ap_addr, char *extra)
1082{
1083        struct zd1201 *zd = netdev_priv(dev);
1084        unsigned char buffer[6];
1085
1086        if (!zd1201_getconfig(zd, ZD1201_RID_COMMSQUALITY, buffer, 6)) {
1087                /* Unfortunately the quality and noise reported is useless.
1088                   they seem to be accumulators that increase until you
1089                   read them, unless we poll on a fixed interval we can't
1090                   use them
1091                 */
1092                /*zd->iwstats.qual.qual = le16_to_cpu(((__le16 *)buffer)[0]);*/
1093                zd->iwstats.qual.level = le16_to_cpu(((__le16 *)buffer)[1]);
1094                /*zd->iwstats.qual.noise = le16_to_cpu(((__le16 *)buffer)[2]);*/
1095                zd->iwstats.qual.updated = 2;
1096        }
1097
1098        return zd1201_getconfig(zd, ZD1201_RID_CURRENTBSSID, ap_addr->sa_data, 6);
1099}
1100
1101static int zd1201_set_scan(struct net_device *dev,
1102    struct iw_request_info *info, struct iw_point *srq, char *extra)
1103{
1104        /* We do everything in get_scan */
1105        return 0;
1106}
1107
1108static int zd1201_get_scan(struct net_device *dev,
1109    struct iw_request_info *info, struct iw_point *srq, char *extra)
1110{
1111        struct zd1201 *zd = netdev_priv(dev);
1112        int err, i, j, enabled_save;
1113        struct iw_event iwe;
1114        char *cev = extra;
1115        char *end_buf = extra + IW_SCAN_MAX_DATA;
1116
1117        /* No scanning in AP mode */
1118        if (zd->ap)
1119                return -EOPNOTSUPP;
1120
1121        /* Scan doesn't seem to work if disabled */
1122        enabled_save = zd->mac_enabled;
1123        zd1201_enable(zd);
1124
1125        zd->rxdatas = 0;
1126        err = zd1201_docmd(zd, ZD1201_CMDCODE_INQUIRE, 
1127             ZD1201_INQ_SCANRESULTS, 0, 0);
1128        if (err)
1129                return err;
1130
1131        wait_event_interruptible(zd->rxdataq, zd->rxdatas);
1132        if (!zd->rxlen)
1133                return -EIO;
1134
1135        if (le16_to_cpu(*(__le16*)&zd->rxdata[2]) != ZD1201_INQ_SCANRESULTS)
1136                return -EIO;
1137
1138        for(i=8; i<zd->rxlen; i+=62) {
1139                iwe.cmd = SIOCGIWAP;
1140                iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
1141                memcpy(iwe.u.ap_addr.sa_data, zd->rxdata+i+6, 6);
1142                cev = iwe_stream_add_event(info, cev, end_buf,
1143                                           &iwe, IW_EV_ADDR_LEN);
1144
1145                iwe.cmd = SIOCGIWESSID;
1146                iwe.u.data.length = zd->rxdata[i+16];
1147                iwe.u.data.flags = 1;
1148                cev = iwe_stream_add_point(info, cev, end_buf,
1149                                           &iwe, zd->rxdata+i+18);
1150
1151                iwe.cmd = SIOCGIWMODE;
1152                if (zd->rxdata[i+14]&0x01)
1153                        iwe.u.mode = IW_MODE_MASTER;
1154                else
1155                        iwe.u.mode = IW_MODE_ADHOC;
1156                cev = iwe_stream_add_event(info, cev, end_buf,
1157                                           &iwe, IW_EV_UINT_LEN);
1158                
1159                iwe.cmd = SIOCGIWFREQ;
1160                iwe.u.freq.m = zd->rxdata[i+0];
1161                iwe.u.freq.e = 0;
1162                cev = iwe_stream_add_event(info, cev, end_buf,
1163                                           &iwe, IW_EV_FREQ_LEN);
1164                
1165                iwe.cmd = SIOCGIWRATE;
1166                iwe.u.bitrate.fixed = 0;
1167                iwe.u.bitrate.disabled = 0;
1168                for (j=0; j<10; j++) if (zd->rxdata[i+50+j]) {
1169                        iwe.u.bitrate.value = (zd->rxdata[i+50+j]&0x7f)*500000;
1170                        cev = iwe_stream_add_event(info, cev, end_buf,
1171                                                   &iwe, IW_EV_PARAM_LEN);
1172                }
1173                
1174                iwe.cmd = SIOCGIWENCODE;
1175                iwe.u.data.length = 0;
1176                if (zd->rxdata[i+14]&0x10)
1177                        iwe.u.data.flags = IW_ENCODE_ENABLED;
1178                else
1179                        iwe.u.data.flags = IW_ENCODE_DISABLED;
1180                cev = iwe_stream_add_point(info, cev, end_buf, &iwe, NULL);
1181                
1182                iwe.cmd = IWEVQUAL;
1183                iwe.u.qual.qual = zd->rxdata[i+4];
1184                iwe.u.qual.noise= zd->rxdata[i+2]/10-100;
1185                iwe.u.qual.level = (256+zd->rxdata[i+4]*100)/255-100;
1186                iwe.u.qual.updated = 7;
1187                cev = iwe_stream_add_event(info, cev, end_buf,
1188                                           &iwe, IW_EV_QUAL_LEN);
1189        }
1190
1191        if (!enabled_save)
1192                zd1201_disable(zd);
1193
1194        srq->length = cev - extra;
1195        srq->flags = 0;
1196
1197        return 0;
1198}
1199
1200static int zd1201_set_essid(struct net_device *dev,
1201    struct iw_request_info *info, struct iw_point *data, char *essid)
1202{
1203        struct zd1201 *zd = netdev_priv(dev);
1204
1205        if (data->length > IW_ESSID_MAX_SIZE)
1206                return -EINVAL;
1207        if (data->length < 1)
1208                data->length = 1;
1209        zd->essidlen = data->length;
1210        memset(zd->essid, 0, IW_ESSID_MAX_SIZE+1);
1211        memcpy(zd->essid, essid, data->length);
1212        return zd1201_join(zd, zd->essid, zd->essidlen);
1213}
1214
1215static int zd1201_get_essid(struct net_device *dev,
1216    struct iw_request_info *info, struct iw_point *data, char *essid)
1217{
1218        struct zd1201 *zd = netdev_priv(dev);
1219
1220        memcpy(essid, zd->essid, zd->essidlen);
1221        data->flags = 1;
1222        data->length = zd->essidlen;
1223
1224        return 0;
1225}
1226
1227static int zd1201_get_nick(struct net_device *dev, struct iw_request_info *info,
1228    struct iw_point *data, char *nick)
1229{
1230        strcpy(nick, "zd1201");
1231        data->flags = 1;
1232        data->length = strlen(nick);
1233        return 0;
1234}
1235
1236static int zd1201_set_rate(struct net_device *dev,
1237    struct iw_request_info *info, struct iw_param *rrq, char *extra)
1238{
1239        struct zd1201 *zd = netdev_priv(dev);
1240        short rate;
1241        int err;
1242
1243        switch (rrq->value) {
1244                case 1000000:
1245                        rate = ZD1201_RATEB1;
1246                        break;
1247                case 2000000:
1248                        rate = ZD1201_RATEB2;
1249                        break;
1250                case 5500000:
1251                        rate = ZD1201_RATEB5;
1252                        break;
1253                case 11000000:
1254                default:
1255                        rate = ZD1201_RATEB11;
1256                        break;
1257        }
1258        if (!rrq->fixed) { /* Also enable all lower bitrates */
1259                rate |= rate-1;
1260        }
1261
1262        err = zd1201_setconfig16(zd, ZD1201_RID_TXRATECNTL, rate);
1263        if (err)
1264                return err;
1265
1266        return zd1201_mac_reset(zd);
1267}
1268
1269static int zd1201_get_rate(struct net_device *dev,
1270    struct iw_request_info *info, struct iw_param *rrq, char *extra)
1271{
1272        struct zd1201 *zd = netdev_priv(dev);
1273        short rate;
1274        int err;
1275
1276        err = zd1201_getconfig16(zd, ZD1201_RID_CURRENTTXRATE, &rate);
1277        if (err)
1278                return err;
1279
1280        switch(rate) {
1281                case 1:
1282                        rrq->value = 1000000;
1283                        break;
1284                case 2:
1285                        rrq->value = 2000000;
1286                        break;
1287                case 5:
1288                        rrq->value = 5500000;
1289                        break;
1290                case 11:
1291                        rrq->value = 11000000;
1292                        break;
1293                default:
1294                        rrq->value = 0;
1295        }
1296        rrq->fixed = 0;
1297        rrq->disabled = 0;
1298
1299        return 0;
1300}
1301
1302static int zd1201_set_rts(struct net_device *dev, struct iw_request_info *info,
1303    struct iw_param *rts, char *extra)
1304{
1305        struct zd1201 *zd = netdev_priv(dev);
1306        int err;
1307        short val = rts->value;
1308
1309        if (rts->disabled || !rts->fixed)
1310                val = ZD1201_RTSMAX;
1311        if (val > ZD1201_RTSMAX)
1312                return -EINVAL;
1313        if (val < 0)
1314                return -EINVAL;
1315
1316        err = zd1201_setconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, val);
1317        if (err)
1318                return err;
1319        return zd1201_mac_reset(zd);
1320}
1321
1322static int zd1201_get_rts(struct net_device *dev, struct iw_request_info *info,
1323    struct iw_param *rts, char *extra)
1324{
1325        struct zd1201 *zd = netdev_priv(dev);
1326        short rtst;
1327        int err;
1328
1329        err = zd1201_getconfig16(zd, ZD1201_RID_CNFRTSTHRESHOLD, &rtst);
1330        if (err)
1331                return err;
1332        rts->value = rtst;
1333        rts->disabled = (rts->value == ZD1201_RTSMAX);
1334        rts->fixed = 1;
1335
1336        return 0;
1337}
1338
1339static int zd1201_set_frag(struct net_device *dev, struct iw_request_info *info,
1340    struct iw_param *frag, char *extra)
1341{
1342        struct zd1201 *zd = netdev_priv(dev);
1343        int err;
1344        short val = frag->value;
1345
1346        if (frag->disabled || !frag->fixed)
1347                val = ZD1201_FRAGMAX;
1348        if (val > ZD1201_FRAGMAX)
1349                return -EINVAL;
1350        if (val < ZD1201_FRAGMIN)
1351                return -EINVAL;
1352        if (val & 1)
1353                return -EINVAL;
1354        err = zd1201_setconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, val);
1355        if (err)
1356                return err;
1357        return zd1201_mac_reset(zd);
1358}
1359
1360static int zd1201_get_frag(struct net_device *dev, struct iw_request_info *info,
1361    struct iw_param *frag, char *extra)
1362{
1363        struct zd1201 *zd = netdev_priv(dev);
1364        short fragt;
1365        int err;
1366
1367        err = zd1201_getconfig16(zd, ZD1201_RID_CNFFRAGTHRESHOLD, &fragt);
1368        if (err)
1369                return err;
1370        frag->value = fragt;
1371        frag->disabled = (frag->value == ZD1201_FRAGMAX);
1372        frag->fixed = 1;
1373
1374        return 0;
1375}
1376
1377static int zd1201_set_retry(struct net_device *dev,
1378    struct iw_request_info *info, struct iw_param *rrq, char *extra)
1379{
1380        return 0;
1381}
1382
1383static int zd1201_get_retry(struct net_device *dev,
1384    struct iw_request_info *info, struct iw_param *rrq, char *extra)
1385{
1386        return 0;
1387}
1388
1389static int zd1201_set_encode(struct net_device *dev,
1390    struct iw_request_info *info, struct iw_point *erq, char *key)
1391{
1392        struct zd1201 *zd = netdev_priv(dev);
1393        short i;
1394        int err, rid;
1395
1396        if (erq->length > ZD1201_MAXKEYLEN)
1397                return -EINVAL;
1398
1399        i = (erq->flags & IW_ENCODE_INDEX)-1;
1400        if (i == -1) {
1401                err = zd1201_getconfig16(zd,ZD1201_RID_CNFDEFAULTKEYID,&i);
1402                if (err)
1403                        return err;
1404        } else {
1405                err = zd1201_setconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, i);
1406                if (err)
1407                        return err;
1408        }
1409
1410        if (i < 0 || i >= ZD1201_NUMKEYS)
1411                return -EINVAL;
1412
1413        rid = ZD1201_RID_CNFDEFAULTKEY0 + i;
1414        err = zd1201_setconfig(zd, rid, key, erq->length, 1);
1415        if (err)
1416                return err;
1417        zd->encode_keylen[i] = erq->length;
1418        memcpy(zd->encode_keys[i], key, erq->length);
1419
1420        i=0;
1421        if (!(erq->flags & IW_ENCODE_DISABLED & IW_ENCODE_MODE)) {
1422                i |= 0x01;
1423                zd->encode_enabled = 1;
1424        } else
1425                zd->encode_enabled = 0;
1426        if (erq->flags & IW_ENCODE_RESTRICTED & IW_ENCODE_MODE) {
1427                i |= 0x02;
1428                zd->encode_restricted = 1;
1429        } else
1430                zd->encode_restricted = 0;
1431        err = zd1201_setconfig16(zd, ZD1201_RID_CNFWEBFLAGS, i);
1432        if (err)
1433                return err;
1434
1435        if (zd->encode_enabled)
1436                i = ZD1201_CNFAUTHENTICATION_SHAREDKEY;
1437        else
1438                i = ZD1201_CNFAUTHENTICATION_OPENSYSTEM;
1439        err = zd1201_setconfig16(zd, ZD1201_RID_CNFAUTHENTICATION, i);
1440        if (err)
1441                return err;
1442
1443        return zd1201_mac_reset(zd);
1444}
1445
1446static int zd1201_get_encode(struct net_device *dev,
1447    struct iw_request_info *info, struct iw_point *erq, char *key)
1448{
1449        struct zd1201 *zd = netdev_priv(dev);
1450        short i;
1451        int err;
1452
1453        if (zd->encode_enabled)
1454                erq->flags = IW_ENCODE_ENABLED;
1455        else
1456                erq->flags = IW_ENCODE_DISABLED;
1457        if (zd->encode_restricted)
1458                erq->flags |= IW_ENCODE_RESTRICTED;
1459        else
1460                erq->flags |= IW_ENCODE_OPEN;
1461
1462        i = (erq->flags & IW_ENCODE_INDEX) -1;
1463        if (i == -1) {
1464                err = zd1201_getconfig16(zd, ZD1201_RID_CNFDEFAULTKEYID, &i);
1465                if (err)
1466                        return err;
1467        }
1468        if (i<0 || i>= ZD1201_NUMKEYS)
1469                return -EINVAL;
1470
1471        erq->flags |= i+1;
1472
1473        erq->length = zd->encode_keylen[i];
1474        memcpy(key, zd->encode_keys[i], erq->length);
1475
1476        return 0;
1477}
1478
1479static int zd1201_set_power(struct net_device *dev, 
1480    struct iw_request_info *info, struct iw_param *vwrq, char *extra)
1481{
1482        struct zd1201 *zd = netdev_priv(dev);
1483        short enabled, duration, level;
1484        int err;
1485
1486        enabled = vwrq->disabled ? 0 : 1;
1487        if (enabled) {
1488                if (vwrq->flags & IW_POWER_PERIOD) {
1489                        duration = vwrq->value;
1490                        err = zd1201_setconfig16(zd, 
1491                            ZD1201_RID_CNFMAXSLEEPDURATION, duration);
1492                        if (err)
1493                                return err;
1494                        goto out;
1495                }
1496                if (vwrq->flags & IW_POWER_TIMEOUT) {
1497                        err = zd1201_getconfig16(zd, 
1498                            ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
1499                        if (err)
1500                                return err;
1501                        level = vwrq->value * 4 / duration;
1502                        if (level > 4)
1503                                level = 4;
1504                        if (level < 0)
1505                                level = 0;
1506                        err = zd1201_setconfig16(zd, ZD1201_RID_CNFPMEPS,
1507                            level);
1508                        if (err)
1509                                return err;
1510                        goto out;
1511                }
1512                return -EINVAL;
1513        }
1514out:
1515        return zd1201_setconfig16(zd, ZD1201_RID_CNFPMENABLED, enabled);
1516}
1517
1518static int zd1201_get_power(struct net_device *dev,
1519    struct iw_request_info *info, struct iw_param *vwrq, char *extra)
1520{
1521        struct zd1201 *zd = netdev_priv(dev);
1522        short enabled, level, duration;
1523        int err;
1524
1525        err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMENABLED, &enabled);
1526        if (err)
1527                return err;
1528        err = zd1201_getconfig16(zd, ZD1201_RID_CNFPMEPS, &level);
1529        if (err)
1530                return err;
1531        err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXSLEEPDURATION, &duration);
1532        if (err)
1533                return err;
1534        vwrq->disabled = enabled ? 0 : 1;
1535        if (vwrq->flags & IW_POWER_TYPE) {
1536                if (vwrq->flags & IW_POWER_PERIOD) {
1537                        vwrq->value = duration;
1538                        vwrq->flags = IW_POWER_PERIOD;
1539                } else {
1540                        vwrq->value = duration * level / 4;
1541                        vwrq->flags = IW_POWER_TIMEOUT;
1542                }
1543        }
1544        if (vwrq->flags & IW_POWER_MODE) {
1545                if (enabled && level)
1546                        vwrq->flags = IW_POWER_UNICAST_R;
1547                else
1548                        vwrq->flags = IW_POWER_ALL_R;
1549        }
1550
1551        return 0;
1552}
1553
1554
1555static const iw_handler zd1201_iw_handler[] =
1556{
1557        (iw_handler) zd1201_config_commit,      /* SIOCSIWCOMMIT */
1558        (iw_handler) zd1201_get_name,           /* SIOCGIWNAME */
1559        (iw_handler) NULL,                      /* SIOCSIWNWID */
1560        (iw_handler) NULL,                      /* SIOCGIWNWID */
1561        (iw_handler) zd1201_set_freq,           /* SIOCSIWFREQ */
1562        (iw_handler) zd1201_get_freq,           /* SIOCGIWFREQ */
1563        (iw_handler) zd1201_set_mode,           /* SIOCSIWMODE */
1564        (iw_handler) zd1201_get_mode,           /* SIOCGIWMODE */
1565        (iw_handler) NULL,                      /* SIOCSIWSENS */
1566        (iw_handler) NULL,                      /* SIOCGIWSENS */
1567        (iw_handler) NULL,                      /* SIOCSIWRANGE */
1568        (iw_handler) zd1201_get_range,           /* SIOCGIWRANGE */
1569        (iw_handler) NULL,                      /* SIOCSIWPRIV */
1570        (iw_handler) NULL,                      /* SIOCGIWPRIV */
1571        (iw_handler) NULL,                      /* SIOCSIWSTATS */
1572        (iw_handler) NULL,                      /* SIOCGIWSTATS */
1573        (iw_handler) NULL,                      /* SIOCSIWSPY */
1574        (iw_handler) NULL,                      /* SIOCGIWSPY */
1575        (iw_handler) NULL,                      /* -- hole -- */
1576        (iw_handler) NULL,                      /* -- hole -- */
1577        (iw_handler) NULL/*zd1201_set_wap*/,            /* SIOCSIWAP */
1578        (iw_handler) zd1201_get_wap,            /* SIOCGIWAP */
1579        (iw_handler) NULL,                      /* -- hole -- */
1580        (iw_handler) NULL,                      /* SIOCGIWAPLIST */
1581        (iw_handler) zd1201_set_scan,           /* SIOCSIWSCAN */
1582        (iw_handler) zd1201_get_scan,           /* SIOCGIWSCAN */
1583        (iw_handler) zd1201_set_essid,          /* SIOCSIWESSID */
1584        (iw_handler) zd1201_get_essid,          /* SIOCGIWESSID */
1585        (iw_handler) NULL,                      /* SIOCSIWNICKN */
1586        (iw_handler) zd1201_get_nick,           /* SIOCGIWNICKN */
1587        (iw_handler) NULL,                      /* -- hole -- */
1588        (iw_handler) NULL,                      /* -- hole -- */
1589        (iw_handler) zd1201_set_rate,           /* SIOCSIWRATE */
1590        (iw_handler) zd1201_get_rate,           /* SIOCGIWRATE */
1591        (iw_handler) zd1201_set_rts,            /* SIOCSIWRTS */
1592        (iw_handler) zd1201_get_rts,            /* SIOCGIWRTS */
1593        (iw_handler) zd1201_set_frag,           /* SIOCSIWFRAG */
1594        (iw_handler) zd1201_get_frag,           /* SIOCGIWFRAG */
1595        (iw_handler) NULL,                      /* SIOCSIWTXPOW */
1596        (iw_handler) NULL,                      /* SIOCGIWTXPOW */
1597        (iw_handler) zd1201_set_retry,          /* SIOCSIWRETRY */
1598        (iw_handler) zd1201_get_retry,          /* SIOCGIWRETRY */
1599        (iw_handler) zd1201_set_encode,         /* SIOCSIWENCODE */
1600        (iw_handler) zd1201_get_encode,         /* SIOCGIWENCODE */
1601        (iw_handler) zd1201_set_power,          /* SIOCSIWPOWER */
1602        (iw_handler) zd1201_get_power,          /* SIOCGIWPOWER */
1603};
1604
1605static int zd1201_set_hostauth(struct net_device *dev,
1606    struct iw_request_info *info, struct iw_param *rrq, char *extra)
1607{
1608        struct zd1201 *zd = netdev_priv(dev);
1609
1610        if (!zd->ap)
1611                return -EOPNOTSUPP;
1612
1613        return zd1201_setconfig16(zd, ZD1201_RID_CNFHOSTAUTH, rrq->value);
1614}
1615
1616static int zd1201_get_hostauth(struct net_device *dev,
1617    struct iw_request_info *info, struct iw_param *rrq, char *extra)
1618{
1619        struct zd1201 *zd = netdev_priv(dev);
1620        short hostauth;
1621        int err;
1622
1623        if (!zd->ap)
1624                return -EOPNOTSUPP;
1625
1626        err = zd1201_getconfig16(zd, ZD1201_RID_CNFHOSTAUTH, &hostauth);
1627        if (err)
1628                return err;
1629        rrq->value = hostauth;
1630        rrq->fixed = 1;
1631
1632        return 0;
1633}
1634
1635static int zd1201_auth_sta(struct net_device *dev,
1636    struct iw_request_info *info, struct sockaddr *sta, char *extra)
1637{
1638        struct zd1201 *zd = netdev_priv(dev);
1639        unsigned char buffer[10];
1640
1641        if (!zd->ap)
1642                return -EOPNOTSUPP;
1643
1644        memcpy(buffer, sta->sa_data, ETH_ALEN);
1645        *(short*)(buffer+6) = 0;        /* 0==success, 1==failure */
1646        *(short*)(buffer+8) = 0;
1647
1648        return zd1201_setconfig(zd, ZD1201_RID_AUTHENTICATESTA, buffer, 10, 1);
1649}
1650
1651static int zd1201_set_maxassoc(struct net_device *dev,
1652    struct iw_request_info *info, struct iw_param *rrq, char *extra)
1653{
1654        struct zd1201 *zd = netdev_priv(dev);
1655        int err;
1656
1657        if (!zd->ap)
1658                return -EOPNOTSUPP;
1659
1660        err = zd1201_setconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, rrq->value);
1661        if (err)
1662                return err;
1663        return 0;
1664}
1665
1666static int zd1201_get_maxassoc(struct net_device *dev,
1667    struct iw_request_info *info, struct iw_param *rrq, char *extra)
1668{
1669        struct zd1201 *zd = netdev_priv(dev);
1670        short maxassoc;
1671        int err;
1672
1673        if (!zd->ap)
1674                return -EOPNOTSUPP;
1675
1676        err = zd1201_getconfig16(zd, ZD1201_RID_CNFMAXASSOCSTATIONS, &maxassoc);
1677        if (err)
1678                return err;
1679        rrq->value = maxassoc;
1680        rrq->fixed = 1;
1681
1682        return 0;
1683}
1684
1685static const iw_handler zd1201_private_handler[] = {
1686        (iw_handler) zd1201_set_hostauth,       /* ZD1201SIWHOSTAUTH */
1687        (iw_handler) zd1201_get_hostauth,       /* ZD1201GIWHOSTAUTH */
1688        (iw_handler) zd1201_auth_sta,           /* ZD1201SIWAUTHSTA */
1689        (iw_handler) NULL,                      /* nothing to get */
1690        (iw_handler) zd1201_set_maxassoc,       /* ZD1201SIMAXASSOC */
1691        (iw_handler) zd1201_get_maxassoc,       /* ZD1201GIMAXASSOC */
1692};
1693
1694static const struct iw_priv_args zd1201_private_args[] = {
1695        { ZD1201SIWHOSTAUTH, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
1696            IW_PRIV_TYPE_NONE, "sethostauth" },
1697        { ZD1201GIWHOSTAUTH, IW_PRIV_TYPE_NONE,
1698            IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "gethostauth" },
1699        { ZD1201SIWAUTHSTA, IW_PRIV_TYPE_ADDR | IW_PRIV_SIZE_FIXED | 1,
1700            IW_PRIV_TYPE_NONE, "authstation" },
1701        { ZD1201SIWMAXASSOC, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
1702            IW_PRIV_TYPE_NONE, "setmaxassoc" },
1703        { ZD1201GIWMAXASSOC, IW_PRIV_TYPE_NONE,
1704            IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "getmaxassoc" },
1705};
1706
1707static const struct iw_handler_def zd1201_iw_handlers = {
1708        .num_standard           = ARRAY_SIZE(zd1201_iw_handler),
1709        .num_private            = ARRAY_SIZE(zd1201_private_handler),
1710        .num_private_args       = ARRAY_SIZE(zd1201_private_args),
1711        .standard               = (iw_handler *)zd1201_iw_handler,
1712        .private                = (iw_handler *)zd1201_private_handler,
1713        .private_args           = (struct iw_priv_args *) zd1201_private_args,
1714        .get_wireless_stats     = zd1201_get_wireless_stats,
1715};
1716
1717static const struct net_device_ops zd1201_netdev_ops = {
1718        .ndo_open               = zd1201_net_open,
1719        .ndo_stop               = zd1201_net_stop,
1720        .ndo_start_xmit         = zd1201_hard_start_xmit,
1721        .ndo_tx_timeout         = zd1201_tx_timeout,
1722        .ndo_set_rx_mode        = zd1201_set_multicast,
1723        .ndo_set_mac_address    = zd1201_set_mac_address,
1724        .ndo_validate_addr      = eth_validate_addr,
1725};
1726
1727static int zd1201_probe(struct usb_interface *interface,
1728                        const struct usb_device_id *id)
1729{
1730        struct zd1201 *zd;
1731        struct net_device *dev;
1732        struct usb_device *usb;
1733        int err;
1734        short porttype;
1735        char buf[IW_ESSID_MAX_SIZE+2];
1736
1737        usb = interface_to_usbdev(interface);
1738
1739        dev = alloc_etherdev(sizeof(*zd));
1740        if (!dev)
1741                return -ENOMEM;
1742        zd = netdev_priv(dev);
1743        zd->dev = dev;
1744
1745        zd->ap = ap;
1746        zd->usb = usb;
1747        zd->removed = 0;
1748        init_waitqueue_head(&zd->rxdataq);
1749        INIT_HLIST_HEAD(&zd->fraglist);
1750        
1751        err = zd1201_fw_upload(usb, zd->ap);
1752        if (err) {
1753                dev_err(&usb->dev, "zd1201 firmware upload failed: %d\n", err);
1754                goto err_zd;
1755        }
1756        
1757        zd->endp_in = 1;
1758        zd->endp_out = 1;
1759        zd->endp_out2 = 2;
1760        zd->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
1761        zd->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
1762        if (!zd->rx_urb || !zd->tx_urb) {
1763                err = -ENOMEM;
1764                goto err_zd;
1765        }
1766
1767        mdelay(100);
1768        err = zd1201_drvr_start(zd);
1769        if (err)
1770                goto err_zd;
1771
1772        err = zd1201_setconfig16(zd, ZD1201_RID_CNFMAXDATALEN, 2312);
1773        if (err)
1774                goto err_start;
1775
1776        err = zd1201_setconfig16(zd, ZD1201_RID_TXRATECNTL,
1777            ZD1201_RATEB1 | ZD1201_RATEB2 | ZD1201_RATEB5 | ZD1201_RATEB11);
1778        if (err)
1779                goto err_start;
1780
1781        dev->netdev_ops = &zd1201_netdev_ops;
1782        dev->wireless_handlers = &zd1201_iw_handlers;
1783        dev->watchdog_timeo = ZD1201_TX_TIMEOUT;
1784        strcpy(dev->name, "wlan%d");
1785
1786        err = zd1201_getconfig(zd, ZD1201_RID_CNFOWNMACADDR, 
1787            dev->dev_addr, dev->addr_len);
1788        if (err)
1789                goto err_start;
1790
1791        /* Set wildcard essid to match zd->essid */
1792        *(__le16 *)buf = cpu_to_le16(0);
1793        err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID, buf,
1794            IW_ESSID_MAX_SIZE+2, 1);
1795        if (err)
1796                goto err_start;
1797
1798        if (zd->ap)
1799                porttype = ZD1201_PORTTYPE_AP;
1800        else
1801                porttype = ZD1201_PORTTYPE_BSS;
1802        err = zd1201_setconfig16(zd, ZD1201_RID_CNFPORTTYPE, porttype);
1803        if (err)
1804                goto err_start;
1805
1806        SET_NETDEV_DEV(dev, &usb->dev);
1807
1808        err = register_netdev(dev);
1809        if (err)
1810                goto err_start;
1811        dev_info(&usb->dev, "%s: ZD1201 USB Wireless interface\n",
1812            dev->name);
1813
1814        usb_set_intfdata(interface, zd);
1815        zd1201_enable(zd);      /* zd1201 likes to startup enabled, */
1816        zd1201_disable(zd);     /* interfering with all the wifis in range */
1817        return 0;
1818
1819err_start:
1820        /* Leave the device in reset state */
1821        zd1201_docmd(zd, ZD1201_CMDCODE_INIT, 0, 0, 0);
1822err_zd:
1823        usb_free_urb(zd->tx_urb);
1824        usb_free_urb(zd->rx_urb);
1825        free_netdev(dev);
1826        return err;
1827}
1828
1829static void zd1201_disconnect(struct usb_interface *interface)
1830{
1831        struct zd1201 *zd = usb_get_intfdata(interface);
1832        struct hlist_node *node2;
1833        struct zd1201_frag *frag;
1834
1835        if (!zd)
1836                return;
1837        usb_set_intfdata(interface, NULL);
1838
1839        hlist_for_each_entry_safe(frag, node2, &zd->fraglist, fnode) {
1840                hlist_del_init(&frag->fnode);
1841                kfree_skb(frag->skb);
1842                kfree(frag);
1843        }
1844
1845        if (zd->tx_urb) {
1846                usb_kill_urb(zd->tx_urb);
1847                usb_free_urb(zd->tx_urb);
1848        }
1849        if (zd->rx_urb) {
1850                usb_kill_urb(zd->rx_urb);
1851                usb_free_urb(zd->rx_urb);
1852        }
1853
1854        if (zd->dev) {
1855                unregister_netdev(zd->dev);
1856                free_netdev(zd->dev);
1857        }
1858}
1859
1860#ifdef CONFIG_PM
1861
1862static int zd1201_suspend(struct usb_interface *interface,
1863                           pm_message_t message)
1864{
1865        struct zd1201 *zd = usb_get_intfdata(interface);
1866
1867        netif_device_detach(zd->dev);
1868
1869        zd->was_enabled = zd->mac_enabled;
1870
1871        if (zd->was_enabled)
1872                return zd1201_disable(zd);
1873        else
1874                return 0;
1875}
1876
1877static int zd1201_resume(struct usb_interface *interface)
1878{
1879        struct zd1201 *zd = usb_get_intfdata(interface);
1880
1881        if (!zd || !zd->dev)
1882                return -ENODEV;
1883
1884        netif_device_attach(zd->dev);
1885
1886        if (zd->was_enabled)
1887                return zd1201_enable(zd);
1888        else
1889                return 0;
1890}
1891
1892#else
1893
1894#define zd1201_suspend NULL
1895#define zd1201_resume  NULL
1896
1897#endif
1898
1899static struct usb_driver zd1201_usb = {
1900        .name = "zd1201",
1901        .probe = zd1201_probe,
1902        .disconnect = zd1201_disconnect,
1903        .id_table = zd1201_table,
1904        .suspend = zd1201_suspend,
1905        .resume = zd1201_resume,
1906        .disable_hub_initiated_lpm = 1,
1907};
1908
1909module_usb_driver(zd1201_usb);
1910