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 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  18
  19 #include <linux/kernel.h>
  20 #include <linux/etherdevice.h>
  21 #include <linux/module.h>
  22 #include <net/cfg80211.h>
  23 #include <net/rtnetlink.h>
  24 #include <brcmu_utils.h>
  25 #include <brcmu_wifi.h>
  26
  27 #include "dhd.h"
  28 #include "dhd_bus.h"
  29 #include "dhd_proto.h"
  30 #include "dhd_dbg.h"
  31 #include "wl_cfg80211.h"
  32 #include "fwil.h"
  33
  34 MODULE_AUTHOR("Broadcom Corporation");
  35 MODULE_DESCRIPTION("Broadcom 802.11 wireless LAN fullmac driver.");
  36 MODULE_SUPPORTED_DEVICE("Broadcom 802.11 WLAN fullmac cards");
  37 MODULE_LICENSE("Dual BSD/GPL");
  38
  39 #define MAX_WAIT_FOR_8021X_TX           50      /* msecs */
  40
  41 /* Error bits */
  42 int brcmf_msg_level;
  43 module_param(brcmf_msg_level, int, 0);
  44
  45
  46 char *brcmf_ifname(struct brcmf_pub *drvr, int ifidx)
  47 {
  48         if (ifidx < 0 || ifidx >= BRCMF_MAX_IFS) {
  49                 brcmf_err("ifidx %d out of range\n", ifidx);
  50                 return "<if_bad>";
  51         }
  52
  53         if (drvr->iflist[ifidx] == NULL) {
  54                 brcmf_err("null i/f %d\n", ifidx);
  55                 return "<if_null>";
  56         }
  57
  58         if (drvr->iflist[ifidx]->ndev)
  59                 return drvr->iflist[ifidx]->ndev->name;
  60
  61         return "<if_none>";
  62 }
  63
  64 static void _brcmf_set_multicast_list(struct work_struct *work)
  65 {
  66         struct brcmf_if *ifp;
  67         struct net_device *ndev;
  68         struct netdev_hw_addr *ha;
  69         u32 cmd_value, cnt;
  70         __le32 cnt_le;
  71         char *buf, *bufp;
  72         u32 buflen;
  73         s32 err;
  74
  75         brcmf_dbg(TRACE, "enter\n");
  76
  77         ifp = container_of(work, struct brcmf_if, multicast_work);
  78         ndev = ifp->ndev;
  79
  80         /* Determine initial value of allmulti flag */
  81         cmd_value = (ndev->flags & IFF_ALLMULTI) ? true : false;
  82
  83         /* Send down the multicast list first. */
  84         cnt = netdev_mc_count(ndev);
  85         buflen = sizeof(cnt) + (cnt * ETH_ALEN);
  86         buf = kmalloc(buflen, GFP_ATOMIC);
  87         if (!buf)
  88                 return;
  89         bufp = buf;
  90
  91         cnt_le = cpu_to_le32(cnt);
  92         memcpy(bufp, &cnt_le, sizeof(cnt_le));
  93         bufp += sizeof(cnt_le);
  94
  95         netdev_for_each_mc_addr(ha, ndev) {
  96                 if (!cnt)
  97                         break;
  98                 memcpy(bufp, ha->addr, ETH_ALEN);
  99                 bufp += ETH_ALEN;
 100                 cnt--;
 101         }
 102
 103         err = brcmf_fil_iovar_data_set(ifp, "mcast_list", buf, buflen);
 104         if (err < 0) {
 105                 brcmf_err("Setting mcast_list failed, %d\n", err);
 106                 cmd_value = cnt ? true : cmd_value;
 107         }
 108
 109         kfree(buf);
 110
 111         /*
 112          * Now send the allmulti setting.  This is based on the setting in the
 113          * net_device flags, but might be modified above to be turned on if we
 114          * were trying to set some addresses and dongle rejected it...
 115          */
 116         err = brcmf_fil_iovar_int_set(ifp, "allmulti", cmd_value);
 117         if (err < 0)
 118                 brcmf_err("Setting allmulti failed, %d\n", err);
 119
 120         /*Finally, pick up the PROMISC flag */
 121         cmd_value = (ndev->flags & IFF_PROMISC) ? true : false;
 122         err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_PROMISC, cmd_value);
 123         if (err < 0)
 124                 brcmf_err("Setting BRCMF_C_SET_PROMISC failed, %d\n",
 125                           err);
 126 }
 127
 128 static void
 129 _brcmf_set_mac_address(struct work_struct *work)
 130 {
 131         struct brcmf_if *ifp;
 132         s32 err;
 133
 134         brcmf_dbg(TRACE, "enter\n");
 135
 136         ifp = container_of(work, struct brcmf_if, setmacaddr_work);
 137         err = brcmf_fil_iovar_data_set(ifp, "cur_etheraddr", ifp->mac_addr,
 138                                        ETH_ALEN);
 139         if (err < 0) {
 140                 brcmf_err("Setting cur_etheraddr failed, %d\n", err);
 141         } else {
 142                 brcmf_dbg(TRACE, "MAC address updated to %pM\n",
 143                           ifp->mac_addr);
 144                 memcpy(ifp->ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
 145         }
 146 }
 147
 148 static int brcmf_netdev_set_mac_address(struct net_device *ndev, void *addr)
 149 {
 150         struct brcmf_if *ifp = netdev_priv(ndev);
 151         struct sockaddr *sa = (struct sockaddr *)addr;
 152
 153         memcpy(&ifp->mac_addr, sa->sa_data, ETH_ALEN);
 154         schedule_work(&ifp->setmacaddr_work);
 155         return 0;
 156 }
 157
 158 static void brcmf_netdev_set_multicast_list(struct net_device *ndev)
 159 {
 160         struct brcmf_if *ifp = netdev_priv(ndev);
 161
 162         schedule_work(&ifp->multicast_work);
 163 }
 164
 165 static int brcmf_netdev_start_xmit(struct sk_buff *skb, struct net_device *ndev)
 166 {
 167         int ret;
 168         struct brcmf_if *ifp = netdev_priv(ndev);
 169         struct brcmf_pub *drvr = ifp->drvr;
 170
 171         brcmf_dbg(TRACE, "Enter\n");
 172
 173         /* Reject if down */
 174         if (!drvr->bus_if->drvr_up ||
 175             (drvr->bus_if->state != BRCMF_BUS_DATA)) {
 176                 brcmf_err("xmit rejected drvup=%d state=%d\n",
 177                           drvr->bus_if->drvr_up,
 178                           drvr->bus_if->state);
 179                 netif_stop_queue(ndev);
 180                 return -ENODEV;
 181         }
 182
 183         if (!drvr->iflist[ifp->idx]) {
 184                 brcmf_err("bad ifidx %d\n", ifp->idx);
 185                 netif_stop_queue(ndev);
 186                 return -ENODEV;
 187         }
 188
 189         /* Make sure there's enough room for any header */
 190         if (skb_headroom(skb) < drvr->hdrlen) {
 191                 struct sk_buff *skb2;
 192
 193                 brcmf_dbg(INFO, "%s: insufficient headroom\n",
 194                           brcmf_ifname(drvr, ifp->idx));
 195                 drvr->bus_if->tx_realloc++;
 196                 skb2 = skb_realloc_headroom(skb, drvr->hdrlen);
 197                 dev_kfree_skb(skb);
 198                 skb = skb2;
 199                 if (skb == NULL) {
 200                         brcmf_err("%s: skb_realloc_headroom failed\n",
 201                                   brcmf_ifname(drvr, ifp->idx));
 202                         ret = -ENOMEM;
 203                         goto done;
 204                 }
 205         }
 206
 207         /* Update multicast statistic */
 208         if (skb->len >= ETH_ALEN) {
 209                 u8 *pktdata = (u8 *)(skb->data);
 210                 struct ethhdr *eh = (struct ethhdr *)pktdata;
 211
 212                 if (is_multicast_ether_addr(eh->h_dest))
 213                         drvr->tx_multicast++;
 214                 if (ntohs(eh->h_proto) == ETH_P_PAE)
 215                         atomic_inc(&drvr->pend_8021x_cnt);
 216         }
 217
 218         /* If the protocol uses a data header, apply it */
 219         brcmf_proto_hdrpush(drvr, ifp->idx, skb);
 220
 221         /* Use bus module to send data frame */
 222         ret =  brcmf_bus_txdata(drvr->bus_if, skb);
 223
 224 done:
 225         if (ret)
 226                 drvr->bus_if->dstats.tx_dropped++;
 227         else
 228                 drvr->bus_if->dstats.tx_packets++;
 229
 230         /* Return ok: we always eat the packet */
 231         return 0;
 232 }
 233
 234 void brcmf_txflowblock(struct device *dev, bool state)
 235 {
 236         struct net_device *ndev;
 237         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 238         struct brcmf_pub *drvr = bus_if->drvr;
 239         int i;
 240
 241         brcmf_dbg(TRACE, "Enter\n");
 242
 243         for (i = 0; i < BRCMF_MAX_IFS; i++)
 244                 if (drvr->iflist[i]) {
 245                         ndev = drvr->iflist[i]->ndev;
 246                         if (state)
 247                                 netif_stop_queue(ndev);
 248                         else
 249                                 netif_wake_queue(ndev);
 250                 }
 251 }
 252
 253 void brcmf_rx_frame(struct device *dev, u8 ifidx,
 254                     struct sk_buff_head *skb_list)
 255 {
 256         unsigned char *eth;
 257         uint len;
 258         struct sk_buff *skb, *pnext;
 259         struct brcmf_if *ifp;
 260         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 261         struct brcmf_pub *drvr = bus_if->drvr;
 262
 263         brcmf_dbg(TRACE, "Enter\n");
 264
 265         skb_queue_walk_safe(skb_list, skb, pnext) {
 266                 skb_unlink(skb, skb_list);
 267
 268                 /* Get the protocol, maintain skb around eth_type_trans()
 269                  * The main reason for this hack is for the limitation of
 270                  * Linux 2.4 where 'eth_type_trans' uses the
 271                  * 'net->hard_header_len'
 272                  * to perform skb_pull inside vs ETH_HLEN. Since to avoid
 273                  * coping of the packet coming from the network stack to add
 274                  * BDC, Hardware header etc, during network interface
 275                  * registration
 276                  * we set the 'net->hard_header_len' to ETH_HLEN + extra space
 277                  * required
 278                  * for BDC, Hardware header etc. and not just the ETH_HLEN
 279                  */
 280                 eth = skb->data;
 281                 len = skb->len;
 282
 283                 ifp = drvr->iflist[ifidx];
 284                 if (ifp == NULL)
 285                         ifp = drvr->iflist[0];
 286
 287                 if (!ifp || !ifp->ndev ||
 288                     ifp->ndev->reg_state != NETREG_REGISTERED) {
 289                         brcmu_pkt_buf_free_skb(skb);
 290                         continue;
 291                 }
 292
 293                 skb->dev = ifp->ndev;
 294                 skb->protocol = eth_type_trans(skb, skb->dev);
 295
 296                 if (skb->pkt_type == PACKET_MULTICAST)
 297                         bus_if->dstats.multicast++;
 298
 299                 skb->data = eth;
 300                 skb->len = len;
 301
 302                 /* Strip header, count, deliver upward */
 303                 skb_pull(skb, ETH_HLEN);
 304
 305                 /* Process special event packets and then discard them */
 306                 brcmf_fweh_process_skb(drvr, skb, &ifidx);
 307
 308                 if (drvr->iflist[ifidx]) {
 309                         ifp = drvr->iflist[ifidx];
 310                         ifp->ndev->last_rx = jiffies;
 311                 }
 312
 313                 bus_if->dstats.rx_bytes += skb->len;
 314                 bus_if->dstats.rx_packets++;    /* Local count */
 315
 316                 if (in_interrupt())
 317                         netif_rx(skb);
 318                 else
 319                         /* If the receive is not processed inside an ISR,
 320                          * the softirqd must be woken explicitly to service
 321                          * the NET_RX_SOFTIRQ.  In 2.6 kernels, this is handled
 322                          * by netif_rx_ni(), but in earlier kernels, we need
 323                          * to do it manually.
 324                          */
 325                         netif_rx_ni(skb);
 326         }
 327 }
 328
 329 void brcmf_txcomplete(struct device *dev, struct sk_buff *txp, bool success)
 330 {
 331         uint ifidx;
 332         struct ethhdr *eh;
 333         u16 type;
 334         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 335         struct brcmf_pub *drvr = bus_if->drvr;
 336
 337         brcmf_proto_hdrpull(dev, &ifidx, txp);
 338
 339         eh = (struct ethhdr *)(txp->data);
 340         type = ntohs(eh->h_proto);
 341
 342         if (type == ETH_P_PAE) {
 343                 atomic_dec(&drvr->pend_8021x_cnt);
 344                 if (waitqueue_active(&drvr->pend_8021x_wait))
 345                         wake_up(&drvr->pend_8021x_wait);
 346         }
 347 }
 348
 349 static struct net_device_stats *brcmf_netdev_get_stats(struct net_device *ndev)
 350 {
 351         struct brcmf_if *ifp = netdev_priv(ndev);
 352         struct brcmf_bus *bus_if = ifp->drvr->bus_if;
 353
 354         brcmf_dbg(TRACE, "Enter\n");
 355
 356         /* Copy dongle stats to net device stats */
 357         ifp->stats.rx_packets = bus_if->dstats.rx_packets;
 358         ifp->stats.tx_packets = bus_if->dstats.tx_packets;
 359         ifp->stats.rx_bytes = bus_if->dstats.rx_bytes;
 360         ifp->stats.tx_bytes = bus_if->dstats.tx_bytes;
 361         ifp->stats.rx_errors = bus_if->dstats.rx_errors;
 362         ifp->stats.tx_errors = bus_if->dstats.tx_errors;
 363         ifp->stats.rx_dropped = bus_if->dstats.rx_dropped;
 364         ifp->stats.tx_dropped = bus_if->dstats.tx_dropped;
 365         ifp->stats.multicast = bus_if->dstats.multicast;
 366
 367         return &ifp->stats;
 368 }
 369
 370 /*
 371  * Set current toe component enables in toe_ol iovar,
 372  * and set toe global enable iovar
 373  */
 374 static int brcmf_toe_set(struct brcmf_if *ifp, u32 toe_ol)
 375 {
 376         s32 err;
 377
 378         err = brcmf_fil_iovar_int_set(ifp, "toe_ol", toe_ol);
 379         if (err < 0) {
 380                 brcmf_err("Setting toe_ol failed, %d\n", err);
 381                 return err;
 382         }
 383
 384         err = brcmf_fil_iovar_int_set(ifp, "toe", (toe_ol != 0));
 385         if (err < 0)
 386                 brcmf_err("Setting toe failed, %d\n", err);
 387
 388         return err;
 389
 390 }
 391
 392 static void brcmf_ethtool_get_drvinfo(struct net_device *ndev,
 393                                     struct ethtool_drvinfo *info)
 394 {
 395         struct brcmf_if *ifp = netdev_priv(ndev);
 396         struct brcmf_pub *drvr = ifp->drvr;
 397
 398         strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
 399         snprintf(info->version, sizeof(info->version), "%lu",
 400                  drvr->drv_version);
 401         strlcpy(info->bus_info, dev_name(drvr->bus_if->dev),
 402                 sizeof(info->bus_info));
 403 }
 404
 405 static const struct ethtool_ops brcmf_ethtool_ops = {
 406         .get_drvinfo = brcmf_ethtool_get_drvinfo,
 407 };
 408
 409 static int brcmf_ethtool(struct brcmf_if *ifp, void __user *uaddr)
 410 {
 411         struct brcmf_pub *drvr = ifp->drvr;
 412         struct ethtool_drvinfo info;
 413         char drvname[sizeof(info.driver)];
 414         u32 cmd;
 415         struct ethtool_value edata;
 416         u32 toe_cmpnt, csum_dir;
 417         int ret;
 418
 419         brcmf_dbg(TRACE, "Enter\n");
 420
 421         /* all ethtool calls start with a cmd word */
 422         if (copy_from_user(&cmd, uaddr, sizeof(u32)))
 423                 return -EFAULT;
 424
 425         switch (cmd) {
 426         case ETHTOOL_GDRVINFO:
 427                 /* Copy out any request driver name */
 428                 if (copy_from_user(&info, uaddr, sizeof(info)))
 429                         return -EFAULT;
 430                 strncpy(drvname, info.driver, sizeof(info.driver));
 431                 drvname[sizeof(info.driver) - 1] = '\0';
 432
 433                 /* clear struct for return */
 434                 memset(&info, 0, sizeof(info));
 435                 info.cmd = cmd;
 436
 437                 /* if requested, identify ourselves */
 438                 if (strcmp(drvname, "?dhd") == 0) {
 439                         sprintf(info.driver, "dhd");
 440                         strcpy(info.version, BRCMF_VERSION_STR);
 441                 }
 442
 443                 /* otherwise, require dongle to be up */
 444                 else if (!drvr->bus_if->drvr_up) {
 445                         brcmf_err("dongle is not up\n");
 446                         return -ENODEV;
 447                 }
 448                 /* finally, report dongle driver type */
 449                 else
 450                         sprintf(info.driver, "wl");
 451
 452                 sprintf(info.version, "%lu", drvr->drv_version);
 453                 if (copy_to_user(uaddr, &info, sizeof(info)))
 454                         return -EFAULT;
 455                 brcmf_dbg(CTL, "given %*s, returning %s\n",
 456                           (int)sizeof(drvname), drvname, info.driver);
 457                 break;
 458
 459                 /* Get toe offload components from dongle */
 460         case ETHTOOL_GRXCSUM:
 461         case ETHTOOL_GTXCSUM:
 462                 ret = brcmf_fil_iovar_int_get(ifp, "toe_ol", &toe_cmpnt);
 463                 if (ret < 0)
 464                         return ret;
 465
 466                 csum_dir =
 467                     (cmd == ETHTOOL_GTXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
 468
 469                 edata.cmd = cmd;
 470                 edata.data = (toe_cmpnt & csum_dir) ? 1 : 0;
 471
 472                 if (copy_to_user(uaddr, &edata, sizeof(edata)))
 473                         return -EFAULT;
 474                 break;
 475
 476                 /* Set toe offload components in dongle */
 477         case ETHTOOL_SRXCSUM:
 478         case ETHTOOL_STXCSUM:
 479                 if (copy_from_user(&edata, uaddr, sizeof(edata)))
 480                         return -EFAULT;
 481
 482                 /* Read the current settings, update and write back */
 483                 ret = brcmf_fil_iovar_int_get(ifp, "toe_ol", &toe_cmpnt);
 484                 if (ret < 0)
 485                         return ret;
 486
 487                 csum_dir =
 488                     (cmd == ETHTOOL_STXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
 489
 490                 if (edata.data != 0)
 491                         toe_cmpnt |= csum_dir;
 492                 else
 493                         toe_cmpnt &= ~csum_dir;
 494
 495                 ret = brcmf_toe_set(ifp, toe_cmpnt);
 496                 if (ret < 0)
 497                         return ret;
 498
 499                 /* If setting TX checksum mode, tell Linux the new mode */
 500                 if (cmd == ETHTOOL_STXCSUM) {
 501                         if (edata.data)
 502                                 ifp->ndev->features |= NETIF_F_IP_CSUM;
 503                         else
 504                                 ifp->ndev->features &= ~NETIF_F_IP_CSUM;
 505                 }
 506
 507                 break;
 508
 509         default:
 510                 return -EOPNOTSUPP;
 511         }
 512
 513         return 0;
 514 }
 515
 516 static int brcmf_netdev_ioctl_entry(struct net_device *ndev, struct ifreq *ifr,
 517                                     int cmd)
 518 {
 519         struct brcmf_if *ifp = netdev_priv(ndev);
 520         struct brcmf_pub *drvr = ifp->drvr;
 521
 522         brcmf_dbg(TRACE, "ifidx %d, cmd 0x%04x\n", ifp->idx, cmd);
 523
 524         if (!drvr->iflist[ifp->idx])
 525                 return -1;
 526
 527         if (cmd == SIOCETHTOOL)
 528                 return brcmf_ethtool(ifp, ifr->ifr_data);
 529
 530         return -EOPNOTSUPP;
 531 }
 532
 533 static int brcmf_netdev_stop(struct net_device *ndev)
 534 {
 535         struct brcmf_if *ifp = netdev_priv(ndev);
 536         struct brcmf_pub *drvr = ifp->drvr;
 537
 538         brcmf_dbg(TRACE, "Enter\n");
 539
 540         if (drvr->bus_if->drvr_up == 0)
 541                 return 0;
 542
 543         brcmf_cfg80211_down(ndev);
 544
 545         /* Set state and stop OS transmissions */
 546         drvr->bus_if->drvr_up = false;
 547         netif_stop_queue(ndev);
 548
 549         return 0;
 550 }
 551
 552 static int brcmf_netdev_open(struct net_device *ndev)
 553 {
 554         struct brcmf_if *ifp = netdev_priv(ndev);
 555         struct brcmf_pub *drvr = ifp->drvr;
 556         struct brcmf_bus *bus_if = drvr->bus_if;
 557         u32 toe_ol;
 558         s32 ret = 0;
 559
 560         brcmf_dbg(TRACE, "ifidx %d\n", ifp->idx);
 561
 562         /* If bus is not ready, can't continue */
 563         if (bus_if->state != BRCMF_BUS_DATA) {
 564                 brcmf_err("failed bus is not ready\n");
 565                 return -EAGAIN;
 566         }
 567
 568         atomic_set(&drvr->pend_8021x_cnt, 0);
 569
 570         memcpy(ndev->dev_addr, drvr->mac, ETH_ALEN);
 571
 572         /* Get current TOE mode from dongle */
 573         if (brcmf_fil_iovar_int_get(ifp, "toe_ol", &toe_ol) >= 0
 574             && (toe_ol & TOE_TX_CSUM_OL) != 0)
 575                 drvr->iflist[ifp->idx]->ndev->features |=
 576                         NETIF_F_IP_CSUM;
 577         else
 578                 drvr->iflist[ifp->idx]->ndev->features &=
 579                         ~NETIF_F_IP_CSUM;
 580
 581         /* make sure RF is ready for work */
 582         brcmf_fil_cmd_int_set(ifp, BRCMF_C_UP, 0);
 583
 584         /* Allow transmit calls */
 585         netif_start_queue(ndev);
 586         drvr->bus_if->drvr_up = true;
 587         if (brcmf_cfg80211_up(ndev)) {
 588                 brcmf_err("failed to bring up cfg80211\n");
 589                 return -1;
 590         }
 591
 592         return ret;
 593 }
 594
 595 static const struct net_device_ops brcmf_netdev_ops_pri = {
 596         .ndo_open = brcmf_netdev_open,
 597         .ndo_stop = brcmf_netdev_stop,
 598         .ndo_get_stats = brcmf_netdev_get_stats,
 599         .ndo_do_ioctl = brcmf_netdev_ioctl_entry,
 600         .ndo_start_xmit = brcmf_netdev_start_xmit,
 601         .ndo_set_mac_address = brcmf_netdev_set_mac_address,
 602         .ndo_set_rx_mode = brcmf_netdev_set_multicast_list
 603 };
 604
 605 static const struct net_device_ops brcmf_netdev_ops_virt = {
 606         .ndo_open = brcmf_cfg80211_up,
 607         .ndo_stop = brcmf_cfg80211_down,
 608         .ndo_get_stats = brcmf_netdev_get_stats,
 609         .ndo_do_ioctl = brcmf_netdev_ioctl_entry,
 610         .ndo_start_xmit = brcmf_netdev_start_xmit,
 611         .ndo_set_mac_address = brcmf_netdev_set_mac_address,
 612         .ndo_set_rx_mode = brcmf_netdev_set_multicast_list
 613 };
 614
 615 int brcmf_net_attach(struct brcmf_if *ifp)
 616 {
 617         struct brcmf_pub *drvr = ifp->drvr;
 618         struct net_device *ndev;
 619
 620         brcmf_dbg(TRACE, "ifidx %d mac %pM\n", ifp->idx, ifp->mac_addr);
 621         ndev = ifp->ndev;
 622
 623         /* set appropriate operations */
 624         if (!ifp->idx)
 625                 ndev->netdev_ops = &brcmf_netdev_ops_pri;
 626         else
 627                 ndev->netdev_ops = &brcmf_netdev_ops_virt;
 628
 629         ndev->hard_header_len = ETH_HLEN + drvr->hdrlen;
 630         ndev->ethtool_ops = &brcmf_ethtool_ops;
 631
 632         drvr->rxsz = ndev->mtu + ndev->hard_header_len +
 633                               drvr->hdrlen;
 634
 635         /* set the mac address */
 636         memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
 637
 638         if (register_netdev(ndev) != 0) {
 639                 brcmf_err("couldn't register the net device\n");
 640                 goto fail;
 641         }
 642
 643         brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name);
 644
 645         return 0;
 646
 647 fail:
 648         ndev->netdev_ops = NULL;
 649         return -EBADE;
 650 }
 651
 652 struct brcmf_if *brcmf_add_if(struct brcmf_pub *drvr, int ifidx, s32 bssidx,
 653                               char *name, u8 *addr_mask)
 654 {
 655         struct brcmf_if *ifp;
 656         struct net_device *ndev;
 657         int i;
 658
 659         brcmf_dbg(TRACE, "idx %d\n", ifidx);
 660
 661         ifp = drvr->iflist[ifidx];
 662         /*
 663          * Delete the existing interface before overwriting it
 664          * in case we missed the BRCMF_E_IF_DEL event.
 665          */
 666         if (ifp) {
 667                 brcmf_err("ERROR: netdev:%s already exists\n",
 668                           ifp->ndev->name);
 669                 if (ifidx) {
 670                         netif_stop_queue(ifp->ndev);
 671                         unregister_netdev(ifp->ndev);
 672                         free_netdev(ifp->ndev);
 673                         drvr->iflist[ifidx] = NULL;
 674                 } else {
 675                         brcmf_err("ignore IF event\n");
 676                         return ERR_PTR(-EINVAL);
 677                 }
 678         }
 679
 680         /* Allocate netdev, including space for private structure */
 681         ndev = alloc_netdev(sizeof(struct brcmf_if), name, ether_setup);
 682         if (!ndev) {
 683                 brcmf_err("OOM - alloc_netdev\n");
 684                 return ERR_PTR(-ENOMEM);
 685         }
 686
 687         ifp = netdev_priv(ndev);
 688         ifp->ndev = ndev;
 689         ifp->drvr = drvr;
 690         drvr->iflist[ifidx] = ifp;
 691         ifp->idx = ifidx;
 692         ifp->bssidx = bssidx;
 693
 694         INIT_WORK(&ifp->setmacaddr_work, _brcmf_set_mac_address);
 695         INIT_WORK(&ifp->multicast_work, _brcmf_set_multicast_list);
 696
 697         if (addr_mask != NULL)
 698                 for (i = 0; i < ETH_ALEN; i++)
 699                         ifp->mac_addr[i] = drvr->mac[i] ^ addr_mask[i];
 700
 701         brcmf_dbg(TRACE, " ==== pid:%x, if:%s (%pM) created ===\n",
 702                   current->pid, ifp->ndev->name, ifp->mac_addr);
 703
 704         return ifp;
 705 }
 706
 707 void brcmf_del_if(struct brcmf_pub *drvr, int ifidx)
 708 {
 709         struct brcmf_if *ifp;
 710
 711         brcmf_dbg(TRACE, "idx %d\n", ifidx);
 712
 713         ifp = drvr->iflist[ifidx];
 714         if (!ifp) {
 715                 brcmf_err("Null interface\n");
 716                 return;
 717         }
 718         if (ifp->ndev) {
 719                 if (ifidx == 0) {
 720                         if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) {
 721                                 rtnl_lock();
 722                                 brcmf_netdev_stop(ifp->ndev);
 723                                 rtnl_unlock();
 724                         }
 725                 } else {
 726                         netif_stop_queue(ifp->ndev);
 727                 }
 728
 729                 cancel_work_sync(&ifp->setmacaddr_work);
 730                 cancel_work_sync(&ifp->multicast_work);
 731
 732                 unregister_netdev(ifp->ndev);
 733                 drvr->iflist[ifidx] = NULL;
 734                 if (ifidx == 0)
 735                         brcmf_cfg80211_detach(drvr->config);
 736                 free_netdev(ifp->ndev);
 737         }
 738 }
 739
 740 int brcmf_attach(uint bus_hdrlen, struct device *dev)
 741 {
 742         struct brcmf_pub *drvr = NULL;
 743         int ret = 0;
 744
 745         brcmf_dbg(TRACE, "Enter\n");
 746
 747         /* Allocate primary brcmf_info */
 748         drvr = kzalloc(sizeof(struct brcmf_pub), GFP_ATOMIC);
 749         if (!drvr)
 750                 return -ENOMEM;
 751
 752         mutex_init(&drvr->proto_block);
 753
 754         /* Link to bus module */
 755         drvr->hdrlen = bus_hdrlen;
 756         drvr->bus_if = dev_get_drvdata(dev);
 757         drvr->bus_if->drvr = drvr;
 758
 759         /* create device debugfs folder */
 760         brcmf_debugfs_attach(drvr);
 761
 762         /* Attach and link in the protocol */
 763         ret = brcmf_proto_attach(drvr);
 764         if (ret != 0) {
 765                 brcmf_err("brcmf_prot_attach failed\n");
 766                 goto fail;
 767         }
 768
 769         /* attach firmware event handler */
 770         brcmf_fweh_attach(drvr);
 771
 772         INIT_LIST_HEAD(&drvr->bus_if->dcmd_list);
 773
 774         init_waitqueue_head(&drvr->pend_8021x_wait);
 775
 776         return ret;
 777
 778 fail:
 779         brcmf_detach(dev);
 780
 781         return ret;
 782 }
 783
 784 int brcmf_bus_start(struct device *dev)
 785 {
 786         int ret = -1;
 787         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 788         struct brcmf_pub *drvr = bus_if->drvr;
 789         struct brcmf_if *ifp;
 790
 791         brcmf_dbg(TRACE, "\n");
 792
 793         /* Bring up the bus */
 794         ret = brcmf_bus_init(bus_if);
 795         if (ret != 0) {
 796                 brcmf_err("brcmf_sdbrcm_bus_init failed %d\n", ret);
 797                 return ret;
 798         }
 799
 800         /* add primary networking interface */
 801         ifp = brcmf_add_if(drvr, 0, 0, "wlan%d", NULL);
 802         if (IS_ERR(ifp))
 803                 return PTR_ERR(ifp);
 804
 805         /* signal bus ready */
 806         bus_if->state = BRCMF_BUS_DATA;
 807
 808         /* Bus is ready, do any initialization */
 809         ret = brcmf_c_preinit_dcmds(ifp);
 810         if (ret < 0)
 811                 goto fail;
 812
 813         drvr->config = brcmf_cfg80211_attach(drvr, bus_if->dev);
 814         if (drvr->config == NULL) {
 815                 ret = -ENOMEM;
 816                 goto fail;
 817         }
 818
 819         ret = brcmf_fweh_activate_events(ifp);
 820         if (ret < 0)
 821                 goto fail;
 822
 823         ret = brcmf_net_attach(ifp);
 824 fail:
 825         if (ret < 0) {
 826                 brcmf_err("failed: %d\n", ret);
 827                 if (drvr->config)
 828                         brcmf_cfg80211_detach(drvr->config);
 829                 free_netdev(drvr->iflist[0]->ndev);
 830                 drvr->iflist[0] = NULL;
 831                 return ret;
 832         }
 833
 834         return 0;
 835 }
 836
 837 static void brcmf_bus_detach(struct brcmf_pub *drvr)
 838 {
 839         brcmf_dbg(TRACE, "Enter\n");
 840
 841         if (drvr) {
 842                 /* Stop the protocol module */
 843                 brcmf_proto_stop(drvr);
 844
 845                 /* Stop the bus module */
 846                 brcmf_bus_stop(drvr->bus_if);
 847         }
 848 }
 849
 850 void brcmf_detach(struct device *dev)
 851 {
 852         int i;
 853         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 854         struct brcmf_pub *drvr = bus_if->drvr;
 855
 856         brcmf_dbg(TRACE, "Enter\n");
 857
 858         if (drvr == NULL)
 859                 return;
 860
 861         /* stop firmware event handling */
 862         brcmf_fweh_detach(drvr);
 863
 864         /* make sure primary interface removed last */
 865         for (i = BRCMF_MAX_IFS-1; i > -1; i--)
 866                 if (drvr->iflist[i])
 867                         brcmf_del_if(drvr, i);
 868
 869         brcmf_bus_detach(drvr);
 870
 871         if (drvr->prot) {
 872                 brcmf_proto_detach(drvr);
 873         }
 874
 875         brcmf_debugfs_detach(drvr);
 876         bus_if->drvr = NULL;
 877         kfree(drvr);
 878 }
 879
 880 static int brcmf_get_pend_8021x_cnt(struct brcmf_pub *drvr)
 881 {
 882         return atomic_read(&drvr->pend_8021x_cnt);
 883 }
 884
 885 int brcmf_netdev_wait_pend8021x(struct net_device *ndev)
 886 {
 887         struct brcmf_if *ifp = netdev_priv(ndev);
 888         struct brcmf_pub *drvr = ifp->drvr;
 889         int err;
 890
 891         err = wait_event_timeout(drvr->pend_8021x_wait,
 892                                  !brcmf_get_pend_8021x_cnt(drvr),
 893                                  msecs_to_jiffies(MAX_WAIT_FOR_8021X_TX));
 894
 895         WARN_ON(!err);
 896
 897         return !err;
 898 }
 899
 900 static void brcmf_driver_init(struct work_struct *work)
 901 {
 902         brcmf_debugfs_init();
 903
 904 #ifdef CONFIG_BRCMFMAC_SDIO
 905         brcmf_sdio_init();
 906 #endif
 907 #ifdef CONFIG_BRCMFMAC_USB
 908         brcmf_usb_init();
 909 #endif
 910 }
 911 static DECLARE_WORK(brcmf_driver_work, brcmf_driver_init);
 912
 913 static int __init brcmfmac_module_init(void)
 914 {
 915         if (!schedule_work(&brcmf_driver_work))
 916                 return -EBUSY;
 917
 918         return 0;
 919 }
 920
 921 static void __exit brcmfmac_module_exit(void)
 922 {
 923         cancel_work_sync(&brcmf_driver_work);
 924
 925 #ifdef CONFIG_BRCMFMAC_SDIO
 926         brcmf_sdio_exit();
 927 #endif
 928 #ifdef CONFIG_BRCMFMAC_USB
 929         brcmf_usb_exit();
 930 #endif
 931         brcmf_debugfs_exit();
 932 }
 933
 934 module_init(brcmfmac_module_init);
 935 module_exit(brcmfmac_module_exit);