Pileus Git - ~andy/linux/blob - drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c

   1 /*
   2  * Copyright (c) 2010 Broadcom Corporation
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
  11  * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
  13  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  14  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16
  17 #include <linux/init.h>
  18 #include <linux/kernel.h>
  19 #include <linux/kthread.h>
  20 #include <linux/slab.h>
  21 #include <linux/skbuff.h>
  22 #include <linux/netdevice.h>
  23 #include <linux/etherdevice.h>
  24 #include <linux/mmc/sdio_func.h>
  25 #include <linux/random.h>
  26 #include <linux/spinlock.h>
  27 #include <linux/ethtool.h>
  28 #include <linux/fcntl.h>
  29 #include <linux/fs.h>
  30 #include <linux/uaccess.h>
  31 #include <linux/hardirq.h>
  32 #include <linux/mutex.h>
  33 #include <linux/wait.h>
  34 #include <linux/module.h>
  35 #include <net/cfg80211.h>
  36 #include <net/rtnetlink.h>
  37 #include <defs.h>
  38 #include <brcmu_utils.h>
  39 #include <brcmu_wifi.h>
  40
  41 #include "dhd.h"
  42 #include "dhd_bus.h"
  43 #include "dhd_proto.h"
  44 #include "dhd_dbg.h"
  45 #include "wl_cfg80211.h"
  46 #include "bcmchip.h"
  47
  48 MODULE_AUTHOR("Broadcom Corporation");
  49 MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN fullmac driver.");
  50 MODULE_SUPPORTED_DEVICE("Broadcom 802.11n WLAN fullmac cards");
  51 MODULE_LICENSE("Dual BSD/GPL");
  52
  53
  54 /* Interface control information */
  55 struct brcmf_if {
  56         struct brcmf_info *info;        /* back pointer to brcmf_info */
  57         /* OS/stack specifics */
  58         struct net_device *ndev;
  59         struct net_device_stats stats;
  60         int idx;                /* iface idx in dongle */
  61         u8 mac_addr[ETH_ALEN];  /* assigned MAC address */
  62 };
  63
  64 /* Local private structure (extension of pub) */
  65 struct brcmf_info {
  66         struct brcmf_pub pub;
  67
  68         /* OS/stack specifics */
  69         struct brcmf_if *iflist[BRCMF_MAX_IFS];
  70
  71         struct mutex proto_block;
  72
  73         struct work_struct setmacaddr_work;
  74         struct work_struct multicast_work;
  75         u8 macvalue[ETH_ALEN];
  76         atomic_t pend_8021x_cnt;
  77 };
  78
  79 /* Error bits */
  80 module_param(brcmf_msg_level, int, 0);
  81
  82 int brcmf_ifname2idx(struct brcmf_info *drvr_priv, char *name)
  83 {
  84         int i = BRCMF_MAX_IFS;
  85         struct brcmf_if *ifp;
  86
  87         if (name == NULL || *name == '\0')
  88                 return 0;
  89
  90         while (--i > 0) {
  91                 ifp = drvr_priv->iflist[i];
  92                 if (ifp && !strncmp(ifp->ndev->name, name, IFNAMSIZ))
  93                         break;
  94         }
  95
  96         brcmf_dbg(TRACE, "return idx %d for \"%s\"\n", i, name);
  97
  98         return i;               /* default - the primary interface */
  99 }
 100
 101 char *brcmf_ifname(struct brcmf_pub *drvr, int ifidx)
 102 {
 103         struct brcmf_info *drvr_priv = drvr->info;
 104
 105         if (ifidx < 0 || ifidx >= BRCMF_MAX_IFS) {
 106                 brcmf_dbg(ERROR, "ifidx %d out of range\n", ifidx);
 107                 return "<if_bad>";
 108         }
 109
 110         if (drvr_priv->iflist[ifidx] == NULL) {
 111                 brcmf_dbg(ERROR, "null i/f %d\n", ifidx);
 112                 return "<if_null>";
 113         }
 114
 115         if (drvr_priv->iflist[ifidx]->ndev)
 116                 return drvr_priv->iflist[ifidx]->ndev->name;
 117
 118         return "<if_none>";
 119 }
 120
 121 static void _brcmf_set_multicast_list(struct work_struct *work)
 122 {
 123         struct net_device *ndev;
 124         struct netdev_hw_addr *ha;
 125         u32 dcmd_value, cnt;
 126         __le32 cnt_le;
 127         __le32 dcmd_le_value;
 128
 129         struct brcmf_dcmd dcmd;
 130         char *buf, *bufp;
 131         uint buflen;
 132         int ret;
 133
 134         struct brcmf_info *drvr_priv = container_of(work, struct brcmf_info,
 135                                                     multicast_work);
 136
 137         ndev = drvr_priv->iflist[0]->ndev;
 138         cnt = netdev_mc_count(ndev);
 139
 140         /* Determine initial value of allmulti flag */
 141         dcmd_value = (ndev->flags & IFF_ALLMULTI) ? true : false;
 142
 143         /* Send down the multicast list first. */
 144
 145         buflen = sizeof("mcast_list") + sizeof(cnt) + (cnt * ETH_ALEN);
 146         bufp = buf = kmalloc(buflen, GFP_ATOMIC);
 147         if (!bufp)
 148                 return;
 149
 150         strcpy(bufp, "mcast_list");
 151         bufp += strlen("mcast_list") + 1;
 152
 153         cnt_le = cpu_to_le32(cnt);
 154         memcpy(bufp, &cnt_le, sizeof(cnt));
 155         bufp += sizeof(cnt_le);
 156
 157         netdev_for_each_mc_addr(ha, ndev) {
 158                 if (!cnt)
 159                         break;
 160                 memcpy(bufp, ha->addr, ETH_ALEN);
 161                 bufp += ETH_ALEN;
 162                 cnt--;
 163         }
 164
 165         memset(&dcmd, 0, sizeof(dcmd));
 166         dcmd.cmd = BRCMF_C_SET_VAR;
 167         dcmd.buf = buf;
 168         dcmd.len = buflen;
 169         dcmd.set = true;
 170
 171         ret = brcmf_proto_dcmd(&drvr_priv->pub, 0, &dcmd, dcmd.len);
 172         if (ret < 0) {
 173                 brcmf_dbg(ERROR, "%s: set mcast_list failed, cnt %d\n",
 174                           brcmf_ifname(&drvr_priv->pub, 0), cnt);
 175                 dcmd_value = cnt ? true : dcmd_value;
 176         }
 177
 178         kfree(buf);
 179
 180         /* Now send the allmulti setting.  This is based on the setting in the
 181          * net_device flags, but might be modified above to be turned on if we
 182          * were trying to set some addresses and dongle rejected it...
 183          */
 184
 185         buflen = sizeof("allmulti") + sizeof(dcmd_value);
 186         buf = kmalloc(buflen, GFP_ATOMIC);
 187         if (!buf)
 188                 return;
 189
 190         dcmd_le_value = cpu_to_le32(dcmd_value);
 191
 192         if (!brcmf_c_mkiovar
 193             ("allmulti", (void *)&dcmd_le_value,
 194             sizeof(dcmd_le_value), buf, buflen)) {
 195                 brcmf_dbg(ERROR, "%s: mkiovar failed for allmulti, datalen %d buflen %u\n",
 196                           brcmf_ifname(&drvr_priv->pub, 0),
 197                           (int)sizeof(dcmd_value), buflen);
 198                 kfree(buf);
 199                 return;
 200         }
 201
 202         memset(&dcmd, 0, sizeof(dcmd));
 203         dcmd.cmd = BRCMF_C_SET_VAR;
 204         dcmd.buf = buf;
 205         dcmd.len = buflen;
 206         dcmd.set = true;
 207
 208         ret = brcmf_proto_dcmd(&drvr_priv->pub, 0, &dcmd, dcmd.len);
 209         if (ret < 0) {
 210                 brcmf_dbg(ERROR, "%s: set allmulti %d failed\n",
 211                           brcmf_ifname(&drvr_priv->pub, 0),
 212                           le32_to_cpu(dcmd_le_value));
 213         }
 214
 215         kfree(buf);
 216
 217         /* Finally, pick up the PROMISC flag as well, like the NIC
 218                  driver does */
 219
 220         dcmd_value = (ndev->flags & IFF_PROMISC) ? true : false;
 221         dcmd_le_value = cpu_to_le32(dcmd_value);
 222
 223         memset(&dcmd, 0, sizeof(dcmd));
 224         dcmd.cmd = BRCMF_C_SET_PROMISC;
 225         dcmd.buf = &dcmd_le_value;
 226         dcmd.len = sizeof(dcmd_le_value);
 227         dcmd.set = true;
 228
 229         ret = brcmf_proto_dcmd(&drvr_priv->pub, 0, &dcmd, dcmd.len);
 230         if (ret < 0) {
 231                 brcmf_dbg(ERROR, "%s: set promisc %d failed\n",
 232                           brcmf_ifname(&drvr_priv->pub, 0),
 233                           le32_to_cpu(dcmd_le_value));
 234         }
 235 }
 236
 237 static void
 238 _brcmf_set_mac_address(struct work_struct *work)
 239 {
 240         char buf[32];
 241         struct brcmf_dcmd dcmd;
 242         int ret;
 243
 244         struct brcmf_info *drvr_priv = container_of(work, struct brcmf_info,
 245                                                     setmacaddr_work);
 246
 247         brcmf_dbg(TRACE, "enter\n");
 248         if (!brcmf_c_mkiovar("cur_etheraddr", (char *)drvr_priv->macvalue,
 249                            ETH_ALEN, buf, 32)) {
 250                 brcmf_dbg(ERROR, "%s: mkiovar failed for cur_etheraddr\n",
 251                           brcmf_ifname(&drvr_priv->pub, 0));
 252                 return;
 253         }
 254         memset(&dcmd, 0, sizeof(dcmd));
 255         dcmd.cmd = BRCMF_C_SET_VAR;
 256         dcmd.buf = buf;
 257         dcmd.len = 32;
 258         dcmd.set = true;
 259
 260         ret = brcmf_proto_dcmd(&drvr_priv->pub, 0, &dcmd, dcmd.len);
 261         if (ret < 0)
 262                 brcmf_dbg(ERROR, "%s: set cur_etheraddr failed\n",
 263                           brcmf_ifname(&drvr_priv->pub, 0));
 264         else
 265                 memcpy(drvr_priv->iflist[0]->ndev->dev_addr,
 266                        drvr_priv->macvalue, ETH_ALEN);
 267
 268         return;
 269 }
 270
 271 static int brcmf_netdev_set_mac_address(struct net_device *ndev, void *addr)
 272 {
 273         struct brcmf_if *ifp = netdev_priv(ndev);
 274         struct brcmf_info *drvr_priv = ifp->info;
 275         struct sockaddr *sa = (struct sockaddr *)addr;
 276
 277         memcpy(&drvr_priv->macvalue, sa->sa_data, ETH_ALEN);
 278         schedule_work(&drvr_priv->setmacaddr_work);
 279         return 0;
 280 }
 281
 282 static void brcmf_netdev_set_multicast_list(struct net_device *ndev)
 283 {
 284         struct brcmf_if *ifp = netdev_priv(ndev);
 285         struct brcmf_info *drvr_priv = ifp->info;
 286
 287         schedule_work(&drvr_priv->multicast_work);
 288 }
 289
 290 int brcmf_sendpkt(struct brcmf_pub *drvr, int ifidx, struct sk_buff *pktbuf)
 291 {
 292         struct brcmf_info *drvr_priv = drvr->info;
 293
 294         /* Reject if down */
 295         if (!drvr->up || (drvr->busstate == BRCMF_BUS_DOWN))
 296                 return -ENODEV;
 297
 298         /* Update multicast statistic */
 299         if (pktbuf->len >= ETH_ALEN) {
 300                 u8 *pktdata = (u8 *) (pktbuf->data);
 301                 struct ethhdr *eh = (struct ethhdr *)pktdata;
 302
 303                 if (is_multicast_ether_addr(eh->h_dest))
 304                         drvr->tx_multicast++;
 305                 if (ntohs(eh->h_proto) == ETH_P_PAE)
 306                         atomic_inc(&drvr_priv->pend_8021x_cnt);
 307         }
 308
 309         /* If the protocol uses a data header, apply it */
 310         brcmf_proto_hdrpush(drvr, ifidx, pktbuf);
 311
 312         /* Use bus module to send data frame */
 313         return brcmf_sdbrcm_bus_txdata(drvr->bus, pktbuf);
 314 }
 315
 316 static int brcmf_netdev_start_xmit(struct sk_buff *skb, struct net_device *ndev)
 317 {
 318         int ret;
 319         struct brcmf_if *ifp = netdev_priv(ndev);
 320         struct brcmf_info *drvr_priv = ifp->info;
 321
 322         brcmf_dbg(TRACE, "Enter\n");
 323
 324         /* Reject if down */
 325         if (!drvr_priv->pub.up || (drvr_priv->pub.busstate == BRCMF_BUS_DOWN)) {
 326                 brcmf_dbg(ERROR, "xmit rejected pub.up=%d busstate=%d\n",
 327                           drvr_priv->pub.up, drvr_priv->pub.busstate);
 328                 netif_stop_queue(ndev);
 329                 return -ENODEV;
 330         }
 331
 332         if (!drvr_priv->iflist[ifp->idx]) {
 333                 brcmf_dbg(ERROR, "bad ifidx %d\n", ifp->idx);
 334                 netif_stop_queue(ndev);
 335                 return -ENODEV;
 336         }
 337
 338         /* Make sure there's enough room for any header */
 339         if (skb_headroom(skb) < drvr_priv->pub.hdrlen) {
 340                 struct sk_buff *skb2;
 341
 342                 brcmf_dbg(INFO, "%s: insufficient headroom\n",
 343                           brcmf_ifname(&drvr_priv->pub, ifp->idx));
 344                 drvr_priv->pub.tx_realloc++;
 345                 skb2 = skb_realloc_headroom(skb, drvr_priv->pub.hdrlen);
 346                 dev_kfree_skb(skb);
 347                 skb = skb2;
 348                 if (skb == NULL) {
 349                         brcmf_dbg(ERROR, "%s: skb_realloc_headroom failed\n",
 350                                   brcmf_ifname(&drvr_priv->pub, ifp->idx));
 351                         ret = -ENOMEM;
 352                         goto done;
 353                 }
 354         }
 355
 356         ret = brcmf_sendpkt(&drvr_priv->pub, ifp->idx, skb);
 357
 358 done:
 359         if (ret)
 360                 drvr_priv->pub.dstats.tx_dropped++;
 361         else
 362                 drvr_priv->pub.tx_packets++;
 363
 364         /* Return ok: we always eat the packet */
 365         return 0;
 366 }
 367
 368 void brcmf_txflowcontrol(struct brcmf_pub *drvr, int ifidx, bool state)
 369 {
 370         struct net_device *ndev;
 371         struct brcmf_info *drvr_priv = drvr->info;
 372
 373         brcmf_dbg(TRACE, "Enter\n");
 374
 375         drvr->txoff = state;
 376         ndev = drvr_priv->iflist[ifidx]->ndev;
 377         if (state == ON)
 378                 netif_stop_queue(ndev);
 379         else
 380                 netif_wake_queue(ndev);
 381 }
 382
 383 static int brcmf_host_event(struct brcmf_info *drvr_priv, int *ifidx,
 384                             void *pktdata, struct brcmf_event_msg *event,
 385                             void **data)
 386 {
 387         int bcmerror = 0;
 388
 389         bcmerror = brcmf_c_host_event(drvr_priv, ifidx, pktdata, event, data);
 390         if (bcmerror != 0)
 391                 return bcmerror;
 392
 393         if (drvr_priv->iflist[*ifidx]->ndev)
 394                 brcmf_cfg80211_event(drvr_priv->iflist[*ifidx]->ndev,
 395                                      event, *data);
 396
 397         return bcmerror;
 398 }
 399
 400 void brcmf_rx_frame(struct brcmf_pub *drvr, int ifidx, struct sk_buff *skb,
 401                   int numpkt)
 402 {
 403         struct brcmf_info *drvr_priv = drvr->info;
 404         unsigned char *eth;
 405         uint len;
 406         void *data;
 407         struct sk_buff *pnext, *save_pktbuf;
 408         int i;
 409         struct brcmf_if *ifp;
 410         struct brcmf_event_msg event;
 411
 412         brcmf_dbg(TRACE, "Enter\n");
 413
 414         save_pktbuf = skb;
 415
 416         for (i = 0; skb && i < numpkt; i++, skb = pnext) {
 417
 418                 pnext = skb->next;
 419                 skb->next = NULL;
 420
 421                 /* Get the protocol, maintain skb around eth_type_trans()
 422                  * The main reason for this hack is for the limitation of
 423                  * Linux 2.4 where 'eth_type_trans' uses the
 424                  * 'net->hard_header_len'
 425                  * to perform skb_pull inside vs ETH_HLEN. Since to avoid
 426                  * coping of the packet coming from the network stack to add
 427                  * BDC, Hardware header etc, during network interface
 428                  * registration
 429                  * we set the 'net->hard_header_len' to ETH_HLEN + extra space
 430                  * required
 431                  * for BDC, Hardware header etc. and not just the ETH_HLEN
 432                  */
 433                 eth = skb->data;
 434                 len = skb->len;
 435
 436                 ifp = drvr_priv->iflist[ifidx];
 437                 if (ifp == NULL)
 438                         ifp = drvr_priv->iflist[0];
 439
 440                 skb->dev = ifp->ndev;
 441                 skb->protocol = eth_type_trans(skb, skb->dev);
 442
 443                 if (skb->pkt_type == PACKET_MULTICAST)
 444                         drvr_priv->pub.rx_multicast++;
 445
 446                 skb->data = eth;
 447                 skb->len = len;
 448
 449                 /* Strip header, count, deliver upward */
 450                 skb_pull(skb, ETH_HLEN);
 451
 452                 /* Process special event packets and then discard them */
 453                 if (ntohs(skb->protocol) == ETH_P_LINK_CTL)
 454                         brcmf_host_event(drvr_priv, &ifidx,
 455                                           skb_mac_header(skb),
 456                                           &event, &data);
 457
 458                 if (drvr_priv->iflist[ifidx]) {
 459                         ifp = drvr_priv->iflist[ifidx];
 460                         ifp->ndev->last_rx = jiffies;
 461                 }
 462
 463                 drvr->dstats.rx_bytes += skb->len;
 464                 drvr->rx_packets++;     /* Local count */
 465
 466                 if (in_interrupt())
 467                         netif_rx(skb);
 468                 else
 469                         /* If the receive is not processed inside an ISR,
 470                          * the softirqd must be woken explicitly to service
 471                          * the NET_RX_SOFTIRQ.  In 2.6 kernels, this is handled
 472                          * by netif_rx_ni(), but in earlier kernels, we need
 473                          * to do it manually.
 474                          */
 475                         netif_rx_ni(skb);
 476         }
 477 }
 478
 479 void brcmf_txcomplete(struct brcmf_pub *drvr, struct sk_buff *txp, bool success)
 480 {
 481         uint ifidx;
 482         struct brcmf_info *drvr_priv = drvr->info;
 483         struct ethhdr *eh;
 484         u16 type;
 485
 486         brcmf_proto_hdrpull(drvr, &ifidx, txp);
 487
 488         eh = (struct ethhdr *)(txp->data);
 489         type = ntohs(eh->h_proto);
 490
 491         if (type == ETH_P_PAE)
 492                 atomic_dec(&drvr_priv->pend_8021x_cnt);
 493
 494 }
 495
 496 static struct net_device_stats *brcmf_netdev_get_stats(struct net_device *ndev)
 497 {
 498         struct brcmf_if *ifp = netdev_priv(ndev);
 499         struct brcmf_info *drvr_priv = ifp->info;
 500
 501         brcmf_dbg(TRACE, "Enter\n");
 502
 503         if (drvr_priv->pub.up)
 504                 /* Use the protocol to get dongle stats */
 505                 brcmf_proto_dstats(&drvr_priv->pub);
 506
 507         /* Copy dongle stats to net device stats */
 508         ifp->stats.rx_packets = drvr_priv->pub.dstats.rx_packets;
 509         ifp->stats.tx_packets = drvr_priv->pub.dstats.tx_packets;
 510         ifp->stats.rx_bytes = drvr_priv->pub.dstats.rx_bytes;
 511         ifp->stats.tx_bytes = drvr_priv->pub.dstats.tx_bytes;
 512         ifp->stats.rx_errors = drvr_priv->pub.dstats.rx_errors;
 513         ifp->stats.tx_errors = drvr_priv->pub.dstats.tx_errors;
 514         ifp->stats.rx_dropped = drvr_priv->pub.dstats.rx_dropped;
 515         ifp->stats.tx_dropped = drvr_priv->pub.dstats.tx_dropped;
 516         ifp->stats.multicast = drvr_priv->pub.dstats.multicast;
 517
 518         return &ifp->stats;
 519 }
 520
 521 /* Retrieve current toe component enables, which are kept
 522          as a bitmap in toe_ol iovar */
 523 static int brcmf_toe_get(struct brcmf_info *drvr_priv, int ifidx, u32 *toe_ol)
 524 {
 525         struct brcmf_dcmd dcmd;
 526         __le32 toe_le;
 527         char buf[32];
 528         int ret;
 529
 530         memset(&dcmd, 0, sizeof(dcmd));
 531
 532         dcmd.cmd = BRCMF_C_GET_VAR;
 533         dcmd.buf = buf;
 534         dcmd.len = (uint) sizeof(buf);
 535         dcmd.set = false;
 536
 537         strcpy(buf, "toe_ol");
 538         ret = brcmf_proto_dcmd(&drvr_priv->pub, ifidx, &dcmd, dcmd.len);
 539         if (ret < 0) {
 540                 /* Check for older dongle image that doesn't support toe_ol */
 541                 if (ret == -EIO) {
 542                         brcmf_dbg(ERROR, "%s: toe not supported by device\n",
 543                                   brcmf_ifname(&drvr_priv->pub, ifidx));
 544                         return -EOPNOTSUPP;
 545                 }
 546
 547                 brcmf_dbg(INFO, "%s: could not get toe_ol: ret=%d\n",
 548                           brcmf_ifname(&drvr_priv->pub, ifidx), ret);
 549                 return ret;
 550         }
 551
 552         memcpy(&toe_le, buf, sizeof(u32));
 553         *toe_ol = le32_to_cpu(toe_le);
 554         return 0;
 555 }
 556
 557 /* Set current toe component enables in toe_ol iovar,
 558          and set toe global enable iovar */
 559 static int brcmf_toe_set(struct brcmf_info *drvr_priv, int ifidx, u32 toe_ol)
 560 {
 561         struct brcmf_dcmd dcmd;
 562         char buf[32];
 563         int ret;
 564         __le32 toe_le = cpu_to_le32(toe_ol);
 565
 566         memset(&dcmd, 0, sizeof(dcmd));
 567
 568         dcmd.cmd = BRCMF_C_SET_VAR;
 569         dcmd.buf = buf;
 570         dcmd.len = (uint) sizeof(buf);
 571         dcmd.set = true;
 572
 573         /* Set toe_ol as requested */
 574         strcpy(buf, "toe_ol");
 575         memcpy(&buf[sizeof("toe_ol")], &toe_le, sizeof(u32));
 576
 577         ret = brcmf_proto_dcmd(&drvr_priv->pub, ifidx, &dcmd, dcmd.len);
 578         if (ret < 0) {
 579                 brcmf_dbg(ERROR, "%s: could not set toe_ol: ret=%d\n",
 580                           brcmf_ifname(&drvr_priv->pub, ifidx), ret);
 581                 return ret;
 582         }
 583
 584         /* Enable toe globally only if any components are enabled. */
 585         toe_le = cpu_to_le32(toe_ol != 0);
 586
 587         strcpy(buf, "toe");
 588         memcpy(&buf[sizeof("toe")], &toe_le, sizeof(u32));
 589
 590         ret = brcmf_proto_dcmd(&drvr_priv->pub, ifidx, &dcmd, dcmd.len);
 591         if (ret < 0) {
 592                 brcmf_dbg(ERROR, "%s: could not set toe: ret=%d\n",
 593                           brcmf_ifname(&drvr_priv->pub, ifidx), ret);
 594                 return ret;
 595         }
 596
 597         return 0;
 598 }
 599
 600 static void brcmf_ethtool_get_drvinfo(struct net_device *ndev,
 601                                     struct ethtool_drvinfo *info)
 602 {
 603         struct brcmf_if *ifp = netdev_priv(ndev);
 604         struct brcmf_info *drvr_priv = ifp->info;
 605
 606         sprintf(info->driver, KBUILD_MODNAME);
 607         sprintf(info->version, "%lu", drvr_priv->pub.drv_version);
 608         sprintf(info->fw_version, "%s", BCM4329_FW_NAME);
 609         sprintf(info->bus_info, "%s",
 610                 dev_name(brcmf_bus_get_device(drvr_priv->pub.bus)));
 611 }
 612
 613 static struct ethtool_ops brcmf_ethtool_ops = {
 614         .get_drvinfo = brcmf_ethtool_get_drvinfo
 615 };
 616
 617 static int brcmf_ethtool(struct brcmf_info *drvr_priv, void __user *uaddr)
 618 {
 619         struct ethtool_drvinfo info;
 620         char drvname[sizeof(info.driver)];
 621         u32 cmd;
 622         struct ethtool_value edata;
 623         u32 toe_cmpnt, csum_dir;
 624         int ret;
 625
 626         brcmf_dbg(TRACE, "Enter\n");
 627
 628         /* all ethtool calls start with a cmd word */
 629         if (copy_from_user(&cmd, uaddr, sizeof(u32)))
 630                 return -EFAULT;
 631
 632         switch (cmd) {
 633         case ETHTOOL_GDRVINFO:
 634                 /* Copy out any request driver name */
 635                 if (copy_from_user(&info, uaddr, sizeof(info)))
 636                         return -EFAULT;
 637                 strncpy(drvname, info.driver, sizeof(info.driver));
 638                 drvname[sizeof(info.driver) - 1] = '\0';
 639
 640                 /* clear struct for return */
 641                 memset(&info, 0, sizeof(info));
 642                 info.cmd = cmd;
 643
 644                 /* if requested, identify ourselves */
 645                 if (strcmp(drvname, "?dhd") == 0) {
 646                         sprintf(info.driver, "dhd");
 647                         strcpy(info.version, BRCMF_VERSION_STR);
 648                 }
 649
 650                 /* otherwise, require dongle to be up */
 651                 else if (!drvr_priv->pub.up) {
 652                         brcmf_dbg(ERROR, "dongle is not up\n");
 653                         return -ENODEV;
 654                 }
 655
 656                 /* finally, report dongle driver type */
 657                 else if (drvr_priv->pub.iswl)
 658                         sprintf(info.driver, "wl");
 659                 else
 660                         sprintf(info.driver, "xx");
 661
 662                 sprintf(info.version, "%lu", drvr_priv->pub.drv_version);
 663                 if (copy_to_user(uaddr, &info, sizeof(info)))
 664                         return -EFAULT;
 665                 brcmf_dbg(CTL, "given %*s, returning %s\n",
 666                           (int)sizeof(drvname), drvname, info.driver);
 667                 break;
 668
 669                 /* Get toe offload components from dongle */
 670         case ETHTOOL_GRXCSUM:
 671         case ETHTOOL_GTXCSUM:
 672                 ret = brcmf_toe_get(drvr_priv, 0, &toe_cmpnt);
 673                 if (ret < 0)
 674                         return ret;
 675
 676                 csum_dir =
 677                     (cmd == ETHTOOL_GTXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
 678
 679                 edata.cmd = cmd;
 680                 edata.data = (toe_cmpnt & csum_dir) ? 1 : 0;
 681
 682                 if (copy_to_user(uaddr, &edata, sizeof(edata)))
 683                         return -EFAULT;
 684                 break;
 685
 686                 /* Set toe offload components in dongle */
 687         case ETHTOOL_SRXCSUM:
 688         case ETHTOOL_STXCSUM:
 689                 if (copy_from_user(&edata, uaddr, sizeof(edata)))
 690                         return -EFAULT;
 691
 692                 /* Read the current settings, update and write back */
 693                 ret = brcmf_toe_get(drvr_priv, 0, &toe_cmpnt);
 694                 if (ret < 0)
 695                         return ret;
 696
 697                 csum_dir =
 698                     (cmd == ETHTOOL_STXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
 699
 700                 if (edata.data != 0)
 701                         toe_cmpnt |= csum_dir;
 702                 else
 703                         toe_cmpnt &= ~csum_dir;
 704
 705                 ret = brcmf_toe_set(drvr_priv, 0, toe_cmpnt);
 706                 if (ret < 0)
 707                         return ret;
 708
 709                 /* If setting TX checksum mode, tell Linux the new mode */
 710                 if (cmd == ETHTOOL_STXCSUM) {
 711                         if (edata.data)
 712                                 drvr_priv->iflist[0]->ndev->features |=
 713                                     NETIF_F_IP_CSUM;
 714                         else
 715                                 drvr_priv->iflist[0]->ndev->features &=
 716                                     ~NETIF_F_IP_CSUM;
 717                 }
 718
 719                 break;
 720
 721         default:
 722                 return -EOPNOTSUPP;
 723         }
 724
 725         return 0;
 726 }
 727
 728 static int brcmf_netdev_ioctl_entry(struct net_device *ndev, struct ifreq *ifr,
 729                                     int cmd)
 730 {
 731         struct brcmf_if *ifp = netdev_priv(ndev);
 732         struct brcmf_info *drvr_priv = ifp->info;
 733
 734         brcmf_dbg(TRACE, "ifidx %d, cmd 0x%04x\n", ifp->idx, cmd);
 735
 736         if (!drvr_priv->iflist[ifp->idx])
 737                 return -1;
 738
 739         if (cmd == SIOCETHTOOL)
 740                 return brcmf_ethtool(drvr_priv, ifr->ifr_data);
 741
 742         return -EOPNOTSUPP;
 743 }
 744
 745 /* called only from within this driver. Sends a command to the dongle. */
 746 s32 brcmf_exec_dcmd(struct net_device *ndev, u32 cmd, void *arg, u32 len)
 747 {
 748         struct brcmf_dcmd dcmd;
 749         s32 err = 0;
 750         int buflen = 0;
 751         bool is_set_key_cmd;
 752         struct brcmf_if *ifp = netdev_priv(ndev);
 753         struct brcmf_info *drvr_priv = ifp->info;
 754
 755         memset(&dcmd, 0, sizeof(dcmd));
 756         dcmd.cmd = cmd;
 757         dcmd.buf = arg;
 758         dcmd.len = len;
 759
 760         if (dcmd.buf != NULL)
 761                 buflen = min_t(uint, dcmd.len, BRCMF_DCMD_MAXLEN);
 762
 763         /* send to dongle (must be up, and wl) */
 764         if ((drvr_priv->pub.busstate != BRCMF_BUS_DATA)) {
 765                 brcmf_dbg(ERROR, "DONGLE_DOWN\n");
 766                 err = -EIO;
 767                 goto done;
 768         }
 769
 770         if (!drvr_priv->pub.iswl) {
 771                 err = -EIO;
 772                 goto done;
 773         }
 774
 775         /*
 776          * Intercept BRCMF_C_SET_KEY CMD - serialize M4 send and
 777          * set key CMD to prevent M4 encryption.
 778          */
 779         is_set_key_cmd = ((dcmd.cmd == BRCMF_C_SET_KEY) ||
 780                           ((dcmd.cmd == BRCMF_C_SET_VAR) &&
 781                            !(strncmp("wsec_key", dcmd.buf, 9))) ||
 782                           ((dcmd.cmd == BRCMF_C_SET_VAR) &&
 783                            !(strncmp("bsscfg:wsec_key", dcmd.buf, 15))));
 784         if (is_set_key_cmd)
 785                 brcmf_netdev_wait_pend8021x(ndev);
 786
 787         err = brcmf_proto_dcmd(&drvr_priv->pub, ifp->idx, &dcmd, buflen);
 788
 789 done:
 790         if (err > 0)
 791                 err = 0;
 792
 793         return err;
 794 }
 795
 796 static int brcmf_netdev_stop(struct net_device *ndev)
 797 {
 798         struct brcmf_if *ifp = netdev_priv(ndev);
 799         struct brcmf_pub *drvr = &ifp->info->pub;
 800
 801         brcmf_dbg(TRACE, "Enter\n");
 802         brcmf_cfg80211_down(drvr->config);
 803         if (drvr->up == 0)
 804                 return 0;
 805
 806         /* Set state and stop OS transmissions */
 807         drvr->up = 0;
 808         netif_stop_queue(ndev);
 809
 810         return 0;
 811 }
 812
 813 static int brcmf_netdev_open(struct net_device *ndev)
 814 {
 815         struct brcmf_if *ifp = netdev_priv(ndev);
 816         struct brcmf_info *drvr_priv = ifp->info;
 817         u32 toe_ol;
 818         s32 ret = 0;
 819
 820         brcmf_dbg(TRACE, "ifidx %d\n", ifp->idx);
 821
 822         if (ifp->idx == 0) {    /* do it only for primary eth0 */
 823                 /* try to bring up bus */
 824                 ret = brcmf_bus_start(&drvr_priv->pub);
 825                 if (ret != 0) {
 826                         brcmf_dbg(ERROR, "failed with code %d\n", ret);
 827                         return -1;
 828                 }
 829                 atomic_set(&drvr_priv->pend_8021x_cnt, 0);
 830
 831                 memcpy(ndev->dev_addr, drvr_priv->pub.mac, ETH_ALEN);
 832
 833                 /* Get current TOE mode from dongle */
 834                 if (brcmf_toe_get(drvr_priv, ifp->idx, &toe_ol) >= 0
 835                     && (toe_ol & TOE_TX_CSUM_OL) != 0)
 836                         drvr_priv->iflist[ifp->idx]->ndev->features |=
 837                                 NETIF_F_IP_CSUM;
 838                 else
 839                         drvr_priv->iflist[ifp->idx]->ndev->features &=
 840                                 ~NETIF_F_IP_CSUM;
 841         }
 842         /* Allow transmit calls */
 843         netif_start_queue(ndev);
 844         drvr_priv->pub.up = 1;
 845         if (brcmf_cfg80211_up(drvr_priv->pub.config)) {
 846                 brcmf_dbg(ERROR, "failed to bring up cfg80211\n");
 847                 return -1;
 848         }
 849
 850         return ret;
 851 }
 852
 853 static const struct net_device_ops brcmf_netdev_ops_pri = {
 854         .ndo_open = brcmf_netdev_open,
 855         .ndo_stop = brcmf_netdev_stop,
 856         .ndo_get_stats = brcmf_netdev_get_stats,
 857         .ndo_do_ioctl = brcmf_netdev_ioctl_entry,
 858         .ndo_start_xmit = brcmf_netdev_start_xmit,
 859         .ndo_set_mac_address = brcmf_netdev_set_mac_address,
 860         .ndo_set_rx_mode = brcmf_netdev_set_multicast_list
 861 };
 862
 863 int
 864 brcmf_add_if(struct brcmf_info *drvr_priv, int ifidx, char *name, u8 *mac_addr)
 865 {
 866         struct brcmf_if *ifp;
 867         struct net_device *ndev;
 868
 869         brcmf_dbg(TRACE, "idx %d\n", ifidx);
 870
 871         ifp = drvr_priv->iflist[ifidx];
 872         /*
 873          * Delete the existing interface before overwriting it
 874          * in case we missed the BRCMF_E_IF_DEL event.
 875          */
 876         if (ifp) {
 877                 brcmf_dbg(ERROR, "ERROR: netdev:%s already exists, try free & unregister\n",
 878                           ifp->ndev->name);
 879                 netif_stop_queue(ifp->ndev);
 880                 unregister_netdev(ifp->ndev);
 881                 free_netdev(ifp->ndev);
 882                 drvr_priv->iflist[ifidx] = NULL;
 883         }
 884
 885         /* Allocate netdev, including space for private structure */
 886         ndev = alloc_netdev(sizeof(struct brcmf_if), name, ether_setup);
 887         if (!ndev) {
 888                 brcmf_dbg(ERROR, "OOM - alloc_netdev\n");
 889                 return -ENOMEM;
 890         }
 891
 892         ifp = netdev_priv(ndev);
 893         ifp->ndev = ndev;
 894         ifp->info = drvr_priv;
 895         drvr_priv->iflist[ifidx] = ifp;
 896         ifp->idx = ifidx;
 897         if (mac_addr != NULL)
 898                 memcpy(&ifp->mac_addr, mac_addr, ETH_ALEN);
 899
 900         if (brcmf_net_attach(&drvr_priv->pub, ifp->idx)) {
 901                 brcmf_dbg(ERROR, "brcmf_net_attach failed");
 902                 free_netdev(ifp->ndev);
 903                 drvr_priv->iflist[ifidx] = NULL;
 904                 return -EOPNOTSUPP;
 905         }
 906
 907         brcmf_dbg(TRACE, " ==== pid:%x, net_device for if:%s created ===\n",
 908                   current->pid, ifp->ndev->name);
 909
 910         return 0;
 911 }
 912
 913 void brcmf_del_if(struct brcmf_info *drvr_priv, int ifidx)
 914 {
 915         struct brcmf_if *ifp;
 916
 917         brcmf_dbg(TRACE, "idx %d\n", ifidx);
 918
 919         ifp = drvr_priv->iflist[ifidx];
 920         if (!ifp) {
 921                 brcmf_dbg(ERROR, "Null interface\n");
 922                 return;
 923         }
 924         if (ifp->ndev) {
 925                 if (ifidx == 0) {
 926                         if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) {
 927                                 rtnl_lock();
 928                                 brcmf_netdev_stop(ifp->ndev);
 929                                 rtnl_unlock();
 930                         }
 931                 } else {
 932                         netif_stop_queue(ifp->ndev);
 933                 }
 934
 935                 unregister_netdev(ifp->ndev);
 936                 drvr_priv->iflist[ifidx] = NULL;
 937                 if (ifidx == 0)
 938                         brcmf_cfg80211_detach(drvr_priv->pub.config);
 939                 free_netdev(ifp->ndev);
 940         }
 941 }
 942
 943 struct brcmf_pub *brcmf_attach(struct brcmf_bus *bus, uint bus_hdrlen)
 944 {
 945         struct brcmf_info *drvr_priv = NULL;
 946
 947         brcmf_dbg(TRACE, "Enter\n");
 948
 949         /* Allocate primary brcmf_info */
 950         drvr_priv = kzalloc(sizeof(struct brcmf_info), GFP_ATOMIC);
 951         if (!drvr_priv)
 952                 goto fail;
 953
 954         mutex_init(&drvr_priv->proto_block);
 955
 956         /* Link to info module */
 957         drvr_priv->pub.info = drvr_priv;
 958
 959         /* Link to bus module */
 960         drvr_priv->pub.bus = bus;
 961         drvr_priv->pub.hdrlen = bus_hdrlen;
 962
 963         /* Attach and link in the protocol */
 964         if (brcmf_proto_attach(&drvr_priv->pub) != 0) {
 965                 brcmf_dbg(ERROR, "brcmf_prot_attach failed\n");
 966                 goto fail;
 967         }
 968
 969         INIT_WORK(&drvr_priv->setmacaddr_work, _brcmf_set_mac_address);
 970         INIT_WORK(&drvr_priv->multicast_work, _brcmf_set_multicast_list);
 971
 972         return &drvr_priv->pub;
 973
 974 fail:
 975         if (drvr_priv)
 976                 brcmf_detach(&drvr_priv->pub);
 977
 978         return NULL;
 979 }
 980
 981 int brcmf_bus_start(struct brcmf_pub *drvr)
 982 {
 983         int ret = -1;
 984         struct brcmf_info *drvr_priv = drvr->info;
 985         /* Room for "event_msgs" + '\0' + bitvec */
 986         char iovbuf[BRCMF_EVENTING_MASK_LEN + 12];
 987
 988         brcmf_dbg(TRACE, "\n");
 989
 990         /* Bring up the bus */
 991         ret = brcmf_sdbrcm_bus_init(&drvr_priv->pub);
 992         if (ret != 0) {
 993                 brcmf_dbg(ERROR, "brcmf_sdbrcm_bus_init failed %d\n", ret);
 994                 return ret;
 995         }
 996
 997         /* If bus is not ready, can't come up */
 998         if (drvr_priv->pub.busstate != BRCMF_BUS_DATA) {
 999                 brcmf_dbg(ERROR, "failed bus is not ready\n");
1000                 return -ENODEV;
1001         }
1002
1003         brcmf_c_mkiovar("event_msgs", drvr->eventmask, BRCMF_EVENTING_MASK_LEN,
1004                       iovbuf, sizeof(iovbuf));
1005         brcmf_proto_cdc_query_dcmd(drvr, 0, BRCMF_C_GET_VAR, iovbuf,
1006                                     sizeof(iovbuf));
1007         memcpy(drvr->eventmask, iovbuf, BRCMF_EVENTING_MASK_LEN);
1008
1009         setbit(drvr->eventmask, BRCMF_E_SET_SSID);
1010         setbit(drvr->eventmask, BRCMF_E_PRUNE);
1011         setbit(drvr->eventmask, BRCMF_E_AUTH);
1012         setbit(drvr->eventmask, BRCMF_E_REASSOC);
1013         setbit(drvr->eventmask, BRCMF_E_REASSOC_IND);
1014         setbit(drvr->eventmask, BRCMF_E_DEAUTH_IND);
1015         setbit(drvr->eventmask, BRCMF_E_DISASSOC_IND);
1016         setbit(drvr->eventmask, BRCMF_E_DISASSOC);
1017         setbit(drvr->eventmask, BRCMF_E_JOIN);
1018         setbit(drvr->eventmask, BRCMF_E_ASSOC_IND);
1019         setbit(drvr->eventmask, BRCMF_E_PSK_SUP);
1020         setbit(drvr->eventmask, BRCMF_E_LINK);
1021         setbit(drvr->eventmask, BRCMF_E_NDIS_LINK);
1022         setbit(drvr->eventmask, BRCMF_E_MIC_ERROR);
1023         setbit(drvr->eventmask, BRCMF_E_PMKID_CACHE);
1024         setbit(drvr->eventmask, BRCMF_E_TXFAIL);
1025         setbit(drvr->eventmask, BRCMF_E_JOIN_START);
1026         setbit(drvr->eventmask, BRCMF_E_SCAN_COMPLETE);
1027
1028 /* enable dongle roaming event */
1029
1030         drvr->pktfilter_count = 1;
1031         /* Setup filter to allow only unicast */
1032         drvr->pktfilter[0] = "100 0 0 0 0x01 0x00";
1033
1034         /* Bus is ready, do any protocol initialization */
1035         ret = brcmf_proto_init(&drvr_priv->pub);
1036         if (ret < 0)
1037                 return ret;
1038
1039         return 0;
1040 }
1041
1042 int brcmf_net_attach(struct brcmf_pub *drvr, int ifidx)
1043 {
1044         struct brcmf_info *drvr_priv = drvr->info;
1045         struct net_device *ndev;
1046         u8 temp_addr[ETH_ALEN] = {
1047                 0x00, 0x90, 0x4c, 0x11, 0x22, 0x33};
1048
1049         brcmf_dbg(TRACE, "ifidx %d\n", ifidx);
1050
1051         ndev = drvr_priv->iflist[ifidx]->ndev;
1052         ndev->netdev_ops = &brcmf_netdev_ops_pri;
1053
1054         /*
1055          * We have to use the primary MAC for virtual interfaces
1056          */
1057         if (ifidx != 0) {
1058                 /* for virtual interfaces use the primary MAC  */
1059                 memcpy(temp_addr, drvr_priv->pub.mac, ETH_ALEN);
1060
1061         }
1062
1063         if (ifidx == 1) {
1064                 brcmf_dbg(TRACE, "ACCESS POINT MAC:\n");
1065                 /*  ACCESSPOINT INTERFACE CASE */
1066                 temp_addr[0] |= 0X02;   /* set bit 2 ,
1067                          - Locally Administered address  */
1068
1069         }
1070         ndev->hard_header_len = ETH_HLEN + drvr_priv->pub.hdrlen;
1071         ndev->ethtool_ops = &brcmf_ethtool_ops;
1072
1073         drvr_priv->pub.rxsz = ndev->mtu + ndev->hard_header_len +
1074                               drvr_priv->pub.hdrlen;
1075
1076         memcpy(ndev->dev_addr, temp_addr, ETH_ALEN);
1077
1078         /* attach to cfg80211 for primary interface */
1079         if (!ifidx) {
1080                 drvr->config =
1081                         brcmf_cfg80211_attach(ndev,
1082                                               brcmf_bus_get_device(drvr->bus),
1083                                               drvr);
1084                 if (drvr->config == NULL) {
1085                         brcmf_dbg(ERROR, "wl_cfg80211_attach failed\n");
1086                         goto fail;
1087                 }
1088         }
1089
1090         if (register_netdev(ndev) != 0) {
1091                 brcmf_dbg(ERROR, "couldn't register the net device\n");
1092                 goto fail;
1093         }
1094
1095         brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name);
1096
1097         return 0;
1098
1099 fail:
1100         ndev->netdev_ops = NULL;
1101         return -EBADE;
1102 }
1103
1104 static void brcmf_bus_detach(struct brcmf_pub *drvr)
1105 {
1106         struct brcmf_info *drvr_priv;
1107
1108         brcmf_dbg(TRACE, "Enter\n");
1109
1110         if (drvr) {
1111                 drvr_priv = drvr->info;
1112                 if (drvr_priv) {
1113                         /* Stop the protocol module */
1114                         brcmf_proto_stop(&drvr_priv->pub);
1115
1116                         /* Stop the bus module */
1117                         brcmf_sdbrcm_bus_stop(drvr_priv->pub.bus);
1118                 }
1119         }
1120 }
1121
1122 void brcmf_detach(struct brcmf_pub *drvr)
1123 {
1124         struct brcmf_info *drvr_priv;
1125
1126         brcmf_dbg(TRACE, "Enter\n");
1127
1128         if (drvr) {
1129                 drvr_priv = drvr->info;
1130                 if (drvr_priv) {
1131                         int i;
1132
1133                         /* make sure primary interface removed last */
1134                         for (i = BRCMF_MAX_IFS-1; i > -1; i--)
1135                                 if (drvr_priv->iflist[i])
1136                                         brcmf_del_if(drvr_priv, i);
1137
1138                         cancel_work_sync(&drvr_priv->setmacaddr_work);
1139                         cancel_work_sync(&drvr_priv->multicast_work);
1140
1141                         brcmf_bus_detach(drvr);
1142
1143                         if (drvr->prot)
1144                                 brcmf_proto_detach(drvr);
1145
1146                         kfree(drvr_priv);
1147                 }
1148         }
1149 }
1150
1151 static void __exit brcmf_module_cleanup(void)
1152 {
1153         brcmf_dbg(TRACE, "Enter\n");
1154
1155         brcmf_bus_unregister();
1156 }
1157
1158 static int __init brcmf_module_init(void)
1159 {
1160         int error;
1161
1162         brcmf_dbg(TRACE, "Enter\n");
1163
1164         error = brcmf_bus_register();
1165
1166         if (error) {
1167                 brcmf_dbg(ERROR, "brcmf_bus_register failed\n");
1168                 goto failed;
1169         }
1170         return 0;
1171
1172 failed:
1173         return -EINVAL;
1174 }
1175
1176 module_init(brcmf_module_init);
1177 module_exit(brcmf_module_cleanup);
1178
1179 int brcmf_os_proto_block(struct brcmf_pub *drvr)
1180 {
1181         struct brcmf_info *drvr_priv = drvr->info;
1182
1183         if (drvr_priv) {
1184                 mutex_lock(&drvr_priv->proto_block);
1185                 return 1;
1186         }
1187         return 0;
1188 }
1189
1190 int brcmf_os_proto_unblock(struct brcmf_pub *drvr)
1191 {
1192         struct brcmf_info *drvr_priv = drvr->info;
1193
1194         if (drvr_priv) {
1195                 mutex_unlock(&drvr_priv->proto_block);
1196                 return 1;
1197         }
1198
1199         return 0;
1200 }
1201
1202 static int brcmf_get_pend_8021x_cnt(struct brcmf_info *drvr_priv)
1203 {
1204         return atomic_read(&drvr_priv->pend_8021x_cnt);
1205 }
1206
1207 #define MAX_WAIT_FOR_8021X_TX   10
1208
1209 int brcmf_netdev_wait_pend8021x(struct net_device *ndev)
1210 {
1211         struct brcmf_if *ifp = netdev_priv(ndev);
1212         struct brcmf_info *drvr_priv = ifp->info;
1213         int timeout = 10 * HZ / 1000;
1214         int ntimes = MAX_WAIT_FOR_8021X_TX;
1215         int pend = brcmf_get_pend_8021x_cnt(drvr_priv);
1216
1217         while (ntimes && pend) {
1218                 if (pend) {
1219                         set_current_state(TASK_INTERRUPTIBLE);
1220                         schedule_timeout(timeout);
1221                         set_current_state(TASK_RUNNING);
1222                         ntimes--;
1223                 }
1224                 pend = brcmf_get_pend_8021x_cnt(drvr_priv);
1225         }
1226         return pend;
1227 }
1228
1229 #ifdef BCMDBG
1230 int brcmf_write_to_file(struct brcmf_pub *drvr, const u8 *buf, int size)
1231 {
1232         int ret = 0;
1233         struct file *fp;
1234         mm_segment_t old_fs;
1235         loff_t pos = 0;
1236
1237         /* change to KERNEL_DS address limit */
1238         old_fs = get_fs();
1239         set_fs(KERNEL_DS);
1240
1241         /* open file to write */
1242         fp = filp_open("/tmp/mem_dump", O_WRONLY | O_CREAT, 0640);
1243         if (!fp) {
1244                 brcmf_dbg(ERROR, "open file error\n");
1245                 ret = -1;
1246                 goto exit;
1247         }
1248
1249         /* Write buf to file */
1250         fp->f_op->write(fp, (char __user *)buf, size, &pos);
1251
1252 exit:
1253         /* free buf before return */
1254         kfree(buf);
1255         /* close file before return */
1256         if (fp)
1257                 filp_close(fp, current->files);
1258         /* restore previous address limit */
1259         set_fs(old_fs);
1260
1261         return ret;
1262 }
1263 #endif                          /* BCMDBG */