drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.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/kernel.h>
  18 #include <linux/etherdevice.h>
  19 #include <linux/module.h>
  20 #include <linux/inetdevice.h>
  21 #include <net/cfg80211.h>
  22 #include <net/rtnetlink.h>
  23 #include <net/addrconf.h>
  24 #include <net/ipv6.h>
  25 #include <brcmu_utils.h>
  26 #include <brcmu_wifi.h>
  27
  28 #include "core.h"
  29 #include "bus.h"
  30 #include "debug.h"
  31 #include "fwil_types.h"
  32 #include "p2p.h"
  33 #include "cfg80211.h"
  34 #include "fwil.h"
  35 #include "fwsignal.h"
  36 #include "feature.h"
  37 #include "proto.h"
  38 #include "pcie.h"
  39 #include "common.h"
  40
  41 #define MAX_WAIT_FOR_8021X_TX                   msecs_to_jiffies(950)
  42
  43 #define BRCMF_BSSIDX_INVALID                    -1
  44
  45 char *brcmf_ifname(struct brcmf_if *ifp)
  46 {
  47         if (!ifp)
  48                 return "<if_null>";
  49
  50         if (ifp->ndev)
  51                 return ifp->ndev->name;
  52
  53         return "<if_none>";
  54 }
  55
  56 struct brcmf_if *brcmf_get_ifp(struct brcmf_pub *drvr, int ifidx)
  57 {
  58         struct brcmf_if *ifp;
  59         s32 bsscfgidx;
  60
  61         if (ifidx < 0 || ifidx >= BRCMF_MAX_IFS) {
  62                 brcmf_err("ifidx %d out of range\n", ifidx);
  63                 return NULL;
  64         }
  65
  66         ifp = NULL;
  67         bsscfgidx = drvr->if2bss[ifidx];
  68         if (bsscfgidx >= 0)
  69                 ifp = drvr->iflist[bsscfgidx];
  70
  71         return ifp;
  72 }
  73
  74 static void _brcmf_set_multicast_list(struct work_struct *work)
  75 {
  76         struct brcmf_if *ifp;
  77         struct net_device *ndev;
  78         struct netdev_hw_addr *ha;
  79         u32 cmd_value, cnt;
  80         __le32 cnt_le;
  81         char *buf, *bufp;
  82         u32 buflen;
  83         s32 err;
  84
  85         ifp = container_of(work, struct brcmf_if, multicast_work);
  86
  87         brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx);
  88
  89         ndev = ifp->ndev;
  90
  91         /* Determine initial value of allmulti flag */
  92         cmd_value = (ndev->flags & IFF_ALLMULTI) ? true : false;
  93
  94         /* Send down the multicast list first. */
  95         cnt = netdev_mc_count(ndev);
  96         buflen = sizeof(cnt) + (cnt * ETH_ALEN);
  97         buf = kmalloc(buflen, GFP_ATOMIC);
  98         if (!buf)
  99                 return;
 100         bufp = buf;
 101
 102         cnt_le = cpu_to_le32(cnt);
 103         memcpy(bufp, &cnt_le, sizeof(cnt_le));
 104         bufp += sizeof(cnt_le);
 105
 106         netdev_for_each_mc_addr(ha, ndev) {
 107                 if (!cnt)
 108                         break;
 109                 memcpy(bufp, ha->addr, ETH_ALEN);
 110                 bufp += ETH_ALEN;
 111                 cnt--;
 112         }
 113
 114         err = brcmf_fil_iovar_data_set(ifp, "mcast_list", buf, buflen);
 115         if (err < 0) {
 116                 brcmf_err("Setting mcast_list failed, %d\n", err);
 117                 cmd_value = cnt ? true : cmd_value;
 118         }
 119
 120         kfree(buf);
 121
 122         /*
 123          * Now send the allmulti setting.  This is based on the setting in the
 124          * net_device flags, but might be modified above to be turned on if we
 125          * were trying to set some addresses and dongle rejected it...
 126          */
 127         err = brcmf_fil_iovar_int_set(ifp, "allmulti", cmd_value);
 128         if (err < 0)
 129                 brcmf_err("Setting allmulti failed, %d\n", err);
 130
 131         /*Finally, pick up the PROMISC flag */
 132         cmd_value = (ndev->flags & IFF_PROMISC) ? true : false;
 133         err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_PROMISC, cmd_value);
 134         if (err < 0)
 135                 brcmf_err("Setting BRCMF_C_SET_PROMISC failed, %d\n",
 136                           err);
 137 }
 138
 139 static void
 140 _brcmf_set_mac_address(struct work_struct *work)
 141 {
 142         struct brcmf_if *ifp;
 143         s32 err;
 144
 145         ifp = container_of(work, struct brcmf_if, setmacaddr_work);
 146
 147         brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx);
 148
 149         err = brcmf_fil_iovar_data_set(ifp, "cur_etheraddr", ifp->mac_addr,
 150                                        ETH_ALEN);
 151         if (err < 0) {
 152                 brcmf_err("Setting cur_etheraddr failed, %d\n", err);
 153         } else {
 154                 brcmf_dbg(TRACE, "MAC address updated to %pM\n",
 155                           ifp->mac_addr);
 156                 memcpy(ifp->ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
 157         }
 158 }
 159
 160 #if IS_ENABLED(CONFIG_IPV6)
 161 static void _brcmf_update_ndtable(struct work_struct *work)
 162 {
 163         struct brcmf_if *ifp;
 164         int i, ret;
 165
 166         ifp = container_of(work, struct brcmf_if, ndoffload_work);
 167
 168         /* clear the table in firmware */
 169         ret = brcmf_fil_iovar_data_set(ifp, "nd_hostip_clear", NULL, 0);
 170         if (ret) {
 171                 brcmf_dbg(TRACE, "fail to clear nd ip table err:%d\n", ret);
 172                 return;
 173         }
 174
 175         for (i = 0; i < ifp->ipv6addr_idx; i++) {
 176                 ret = brcmf_fil_iovar_data_set(ifp, "nd_hostip",
 177                                                &ifp->ipv6_addr_tbl[i],
 178                                                sizeof(struct in6_addr));
 179                 if (ret)
 180                         brcmf_err("add nd ip err %d\n", ret);
 181         }
 182 }
 183 #else
 184 static void _brcmf_update_ndtable(struct work_struct *work)
 185 {
 186 }
 187 #endif
 188
 189 static int brcmf_netdev_set_mac_address(struct net_device *ndev, void *addr)
 190 {
 191         struct brcmf_if *ifp = netdev_priv(ndev);
 192         struct sockaddr *sa = (struct sockaddr *)addr;
 193
 194         memcpy(&ifp->mac_addr, sa->sa_data, ETH_ALEN);
 195         schedule_work(&ifp->setmacaddr_work);
 196         return 0;
 197 }
 198
 199 static void brcmf_netdev_set_multicast_list(struct net_device *ndev)
 200 {
 201         struct brcmf_if *ifp = netdev_priv(ndev);
 202
 203         schedule_work(&ifp->multicast_work);
 204 }
 205
 206 static netdev_tx_t brcmf_netdev_start_xmit(struct sk_buff *skb,
 207                                            struct net_device *ndev)
 208 {
 209         int ret;
 210         struct brcmf_if *ifp = netdev_priv(ndev);
 211         struct brcmf_pub *drvr = ifp->drvr;
 212         struct ethhdr *eh = (struct ethhdr *)(skb->data);
 213
 214         brcmf_dbg(DATA, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx);
 215
 216         /* Can the device send data? */
 217         if (drvr->bus_if->state != BRCMF_BUS_UP) {
 218                 brcmf_err("xmit rejected state=%d\n", drvr->bus_if->state);
 219                 netif_stop_queue(ndev);
 220                 dev_kfree_skb(skb);
 221                 ret = -ENODEV;
 222                 goto done;
 223         }
 224
 225         /* Make sure there's enough room for any header */
 226         if (skb_headroom(skb) < drvr->hdrlen) {
 227                 struct sk_buff *skb2;
 228
 229                 brcmf_dbg(INFO, "%s: insufficient headroom\n",
 230                           brcmf_ifname(ifp));
 231                 drvr->bus_if->tx_realloc++;
 232                 skb2 = skb_realloc_headroom(skb, drvr->hdrlen);
 233                 dev_kfree_skb(skb);
 234                 skb = skb2;
 235                 if (skb == NULL) {
 236                         brcmf_err("%s: skb_realloc_headroom failed\n",
 237                                   brcmf_ifname(ifp));
 238                         ret = -ENOMEM;
 239                         goto done;
 240                 }
 241         }
 242
 243         /* validate length for ether packet */
 244         if (skb->len < sizeof(*eh)) {
 245                 ret = -EINVAL;
 246                 dev_kfree_skb(skb);
 247                 goto done;
 248         }
 249
 250         if (eh->h_proto == htons(ETH_P_PAE))
 251                 atomic_inc(&ifp->pend_8021x_cnt);
 252
 253         ret = brcmf_fws_process_skb(ifp, skb);
 254
 255 done:
 256         if (ret) {
 257                 ifp->stats.tx_dropped++;
 258         } else {
 259                 ifp->stats.tx_packets++;
 260                 ifp->stats.tx_bytes += skb->len;
 261         }
 262
 263         /* Return ok: we always eat the packet */
 264         return NETDEV_TX_OK;
 265 }
 266
 267 void brcmf_txflowblock_if(struct brcmf_if *ifp,
 268                           enum brcmf_netif_stop_reason reason, bool state)
 269 {
 270         unsigned long flags;
 271
 272         if (!ifp || !ifp->ndev)
 273                 return;
 274
 275         brcmf_dbg(TRACE, "enter: bsscfgidx=%d stop=0x%X reason=%d state=%d\n",
 276                   ifp->bsscfgidx, ifp->netif_stop, reason, state);
 277
 278         spin_lock_irqsave(&ifp->netif_stop_lock, flags);
 279         if (state) {
 280                 if (!ifp->netif_stop)
 281                         netif_stop_queue(ifp->ndev);
 282                 ifp->netif_stop |= reason;
 283         } else {
 284                 ifp->netif_stop &= ~reason;
 285                 if (!ifp->netif_stop)
 286                         netif_wake_queue(ifp->ndev);
 287         }
 288         spin_unlock_irqrestore(&ifp->netif_stop_lock, flags);
 289 }
 290
 291 void brcmf_txflowblock(struct device *dev, bool state)
 292 {
 293         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 294         struct brcmf_pub *drvr = bus_if->drvr;
 295
 296         brcmf_dbg(TRACE, "Enter\n");
 297
 298         brcmf_fws_bus_blocked(drvr, state);
 299 }
 300
 301 void brcmf_netif_rx(struct brcmf_if *ifp, struct sk_buff *skb)
 302 {
 303         if (skb->pkt_type == PACKET_MULTICAST)
 304                 ifp->stats.multicast++;
 305
 306         if (!(ifp->ndev->flags & IFF_UP)) {
 307                 brcmu_pkt_buf_free_skb(skb);
 308                 return;
 309         }
 310
 311         ifp->stats.rx_bytes += skb->len;
 312         ifp->stats.rx_packets++;
 313
 314         brcmf_dbg(DATA, "rx proto=0x%X\n", ntohs(skb->protocol));
 315         if (in_interrupt())
 316                 netif_rx(skb);
 317         else
 318                 /* If the receive is not processed inside an ISR,
 319                  * the softirqd must be woken explicitly to service
 320                  * the NET_RX_SOFTIRQ.  This is handled by netif_rx_ni().
 321                  */
 322                 netif_rx_ni(skb);
 323 }
 324
 325 static int brcmf_rx_hdrpull(struct brcmf_pub *drvr, struct sk_buff *skb,
 326                             struct brcmf_if **ifp)
 327 {
 328         int ret;
 329
 330         /* process and remove protocol-specific header */
 331         ret = brcmf_proto_hdrpull(drvr, true, skb, ifp);
 332
 333         if (ret || !(*ifp) || !(*ifp)->ndev) {
 334                 if (ret != -ENODATA && *ifp)
 335                         (*ifp)->stats.rx_errors++;
 336                 brcmu_pkt_buf_free_skb(skb);
 337                 return -ENODATA;
 338         }
 339
 340         skb->protocol = eth_type_trans(skb, (*ifp)->ndev);
 341         return 0;
 342 }
 343
 344 void brcmf_rx_frame(struct device *dev, struct sk_buff *skb, bool handle_event)
 345 {
 346         struct brcmf_if *ifp;
 347         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 348         struct brcmf_pub *drvr = bus_if->drvr;
 349
 350         brcmf_dbg(DATA, "Enter: %s: rxp=%p\n", dev_name(dev), skb);
 351
 352         if (brcmf_rx_hdrpull(drvr, skb, &ifp))
 353                 return;
 354
 355         if (brcmf_proto_is_reorder_skb(skb)) {
 356                 brcmf_proto_rxreorder(ifp, skb);
 357         } else {
 358                 /* Process special event packets */
 359                 if (handle_event)
 360                         brcmf_fweh_process_skb(ifp->drvr, skb);
 361
 362                 brcmf_netif_rx(ifp, skb);
 363         }
 364 }
 365
 366 void brcmf_rx_event(struct device *dev, struct sk_buff *skb)
 367 {
 368         struct brcmf_if *ifp;
 369         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 370         struct brcmf_pub *drvr = bus_if->drvr;
 371
 372         brcmf_dbg(EVENT, "Enter: %s: rxp=%p\n", dev_name(dev), skb);
 373
 374         if (brcmf_rx_hdrpull(drvr, skb, &ifp))
 375                 return;
 376
 377         brcmf_fweh_process_skb(ifp->drvr, skb);
 378         brcmu_pkt_buf_free_skb(skb);
 379 }
 380
 381 void brcmf_txfinalize(struct brcmf_if *ifp, struct sk_buff *txp, bool success)
 382 {
 383         struct ethhdr *eh;
 384         u16 type;
 385
 386         eh = (struct ethhdr *)(txp->data);
 387         type = ntohs(eh->h_proto);
 388
 389         if (type == ETH_P_PAE) {
 390                 atomic_dec(&ifp->pend_8021x_cnt);
 391                 if (waitqueue_active(&ifp->pend_8021x_wait))
 392                         wake_up(&ifp->pend_8021x_wait);
 393         }
 394
 395         if (!success)
 396                 ifp->stats.tx_errors++;
 397
 398         brcmu_pkt_buf_free_skb(txp);
 399 }
 400
 401 void brcmf_txcomplete(struct device *dev, struct sk_buff *txp, bool success)
 402 {
 403         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 404         struct brcmf_pub *drvr = bus_if->drvr;
 405         struct brcmf_if *ifp;
 406
 407         /* await txstatus signal for firmware if active */
 408         if (brcmf_fws_fc_active(drvr->fws)) {
 409                 if (!success)
 410                         brcmf_fws_bustxfail(drvr->fws, txp);
 411         } else {
 412                 if (brcmf_proto_hdrpull(drvr, false, txp, &ifp))
 413                         brcmu_pkt_buf_free_skb(txp);
 414                 else
 415                         brcmf_txfinalize(ifp, txp, success);
 416         }
 417 }
 418
 419 static struct net_device_stats *brcmf_netdev_get_stats(struct net_device *ndev)
 420 {
 421         struct brcmf_if *ifp = netdev_priv(ndev);
 422
 423         brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx);
 424
 425         return &ifp->stats;
 426 }
 427
 428 static void brcmf_ethtool_get_drvinfo(struct net_device *ndev,
 429                                     struct ethtool_drvinfo *info)
 430 {
 431         struct brcmf_if *ifp = netdev_priv(ndev);
 432         struct brcmf_pub *drvr = ifp->drvr;
 433         char drev[BRCMU_DOTREV_LEN] = "n/a";
 434
 435         if (drvr->revinfo.result == 0)
 436                 brcmu_dotrev_str(drvr->revinfo.driverrev, drev);
 437         strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
 438         strlcpy(info->version, drev, sizeof(info->version));
 439         strlcpy(info->fw_version, drvr->fwver, sizeof(info->fw_version));
 440         strlcpy(info->bus_info, dev_name(drvr->bus_if->dev),
 441                 sizeof(info->bus_info));
 442 }
 443
 444 static const struct ethtool_ops brcmf_ethtool_ops = {
 445         .get_drvinfo = brcmf_ethtool_get_drvinfo,
 446 };
 447
 448 static int brcmf_netdev_stop(struct net_device *ndev)
 449 {
 450         struct brcmf_if *ifp = netdev_priv(ndev);
 451
 452         brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx);
 453
 454         brcmf_cfg80211_down(ndev);
 455
 456         brcmf_fil_iovar_data_set(ifp, "arp_hostip_clear", NULL, 0);
 457
 458         brcmf_net_setcarrier(ifp, false);
 459
 460         return 0;
 461 }
 462
 463 static int brcmf_netdev_open(struct net_device *ndev)
 464 {
 465         struct brcmf_if *ifp = netdev_priv(ndev);
 466         struct brcmf_pub *drvr = ifp->drvr;
 467         struct brcmf_bus *bus_if = drvr->bus_if;
 468         u32 toe_ol;
 469
 470         brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx);
 471
 472         /* If bus is not ready, can't continue */
 473         if (bus_if->state != BRCMF_BUS_UP) {
 474                 brcmf_err("failed bus is not ready\n");
 475                 return -EAGAIN;
 476         }
 477
 478         atomic_set(&ifp->pend_8021x_cnt, 0);
 479
 480         /* Get current TOE mode from dongle */
 481         if (brcmf_fil_iovar_int_get(ifp, "toe_ol", &toe_ol) >= 0
 482             && (toe_ol & TOE_TX_CSUM_OL) != 0)
 483                 ndev->features |= NETIF_F_IP_CSUM;
 484         else
 485                 ndev->features &= ~NETIF_F_IP_CSUM;
 486
 487         if (brcmf_cfg80211_up(ndev)) {
 488                 brcmf_err("failed to bring up cfg80211\n");
 489                 return -EIO;
 490         }
 491
 492         /* Clear, carrier, set when connected or AP mode. */
 493         netif_carrier_off(ndev);
 494         return 0;
 495 }
 496
 497 static const struct net_device_ops brcmf_netdev_ops_pri = {
 498         .ndo_open = brcmf_netdev_open,
 499         .ndo_stop = brcmf_netdev_stop,
 500         .ndo_get_stats = brcmf_netdev_get_stats,
 501         .ndo_start_xmit = brcmf_netdev_start_xmit,
 502         .ndo_set_mac_address = brcmf_netdev_set_mac_address,
 503         .ndo_set_rx_mode = brcmf_netdev_set_multicast_list
 504 };
 505
 506 int brcmf_net_attach(struct brcmf_if *ifp, bool rtnl_locked)
 507 {
 508         struct brcmf_pub *drvr = ifp->drvr;
 509         struct net_device *ndev;
 510         s32 err;
 511
 512         brcmf_dbg(TRACE, "Enter, bsscfgidx=%d mac=%pM\n", ifp->bsscfgidx,
 513                   ifp->mac_addr);
 514         ndev = ifp->ndev;
 515
 516         /* set appropriate operations */
 517         ndev->netdev_ops = &brcmf_netdev_ops_pri;
 518
 519         ndev->needed_headroom += drvr->hdrlen;
 520         ndev->ethtool_ops = &brcmf_ethtool_ops;
 521
 522         drvr->rxsz = ndev->mtu + ndev->hard_header_len +
 523                               drvr->hdrlen;
 524
 525         /* set the mac address */
 526         memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
 527
 528         INIT_WORK(&ifp->setmacaddr_work, _brcmf_set_mac_address);
 529         INIT_WORK(&ifp->multicast_work, _brcmf_set_multicast_list);
 530         INIT_WORK(&ifp->ndoffload_work, _brcmf_update_ndtable);
 531
 532         if (rtnl_locked)
 533                 err = register_netdevice(ndev);
 534         else
 535                 err = register_netdev(ndev);
 536         if (err != 0) {
 537                 brcmf_err("couldn't register the net device\n");
 538                 goto fail;
 539         }
 540
 541         brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name);
 542         return 0;
 543
 544 fail:
 545         drvr->iflist[ifp->bsscfgidx] = NULL;
 546         ndev->netdev_ops = NULL;
 547         free_netdev(ndev);
 548         return -EBADE;
 549 }
 550
 551 static void brcmf_net_detach(struct net_device *ndev, bool rtnl_locked)
 552 {
 553         if (ndev->reg_state == NETREG_REGISTERED) {
 554                 if (rtnl_locked)
 555                         unregister_netdevice(ndev);
 556                 else
 557                         unregister_netdev(ndev);
 558         } else {
 559                 brcmf_cfg80211_free_netdev(ndev);
 560         }
 561 }
 562
 563 void brcmf_net_setcarrier(struct brcmf_if *ifp, bool on)
 564 {
 565         struct net_device *ndev;
 566
 567         brcmf_dbg(TRACE, "Enter, bsscfgidx=%d carrier=%d\n", ifp->bsscfgidx,
 568                   on);
 569
 570         ndev = ifp->ndev;
 571         brcmf_txflowblock_if(ifp, BRCMF_NETIF_STOP_REASON_DISCONNECTED, !on);
 572         if (on) {
 573                 if (!netif_carrier_ok(ndev))
 574                         netif_carrier_on(ndev);
 575
 576         } else {
 577                 if (netif_carrier_ok(ndev))
 578                         netif_carrier_off(ndev);
 579         }
 580 }
 581
 582 static int brcmf_net_p2p_open(struct net_device *ndev)
 583 {
 584         brcmf_dbg(TRACE, "Enter\n");
 585
 586         return brcmf_cfg80211_up(ndev);
 587 }
 588
 589 static int brcmf_net_p2p_stop(struct net_device *ndev)
 590 {
 591         brcmf_dbg(TRACE, "Enter\n");
 592
 593         return brcmf_cfg80211_down(ndev);
 594 }
 595
 596 static netdev_tx_t brcmf_net_p2p_start_xmit(struct sk_buff *skb,
 597                                             struct net_device *ndev)
 598 {
 599         if (skb)
 600                 dev_kfree_skb_any(skb);
 601
 602         return NETDEV_TX_OK;
 603 }
 604
 605 static const struct net_device_ops brcmf_netdev_ops_p2p = {
 606         .ndo_open = brcmf_net_p2p_open,
 607         .ndo_stop = brcmf_net_p2p_stop,
 608         .ndo_start_xmit = brcmf_net_p2p_start_xmit
 609 };
 610
 611 static int brcmf_net_p2p_attach(struct brcmf_if *ifp)
 612 {
 613         struct net_device *ndev;
 614
 615         brcmf_dbg(TRACE, "Enter, bsscfgidx=%d mac=%pM\n", ifp->bsscfgidx,
 616                   ifp->mac_addr);
 617         ndev = ifp->ndev;
 618
 619         ndev->netdev_ops = &brcmf_netdev_ops_p2p;
 620
 621         /* set the mac address */
 622         memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
 623
 624         if (register_netdev(ndev) != 0) {
 625                 brcmf_err("couldn't register the p2p net device\n");
 626                 goto fail;
 627         }
 628
 629         brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name);
 630
 631         return 0;
 632
 633 fail:
 634         ifp->drvr->iflist[ifp->bsscfgidx] = NULL;
 635         ndev->netdev_ops = NULL;
 636         free_netdev(ndev);
 637         return -EBADE;
 638 }
 639
 640 struct brcmf_if *brcmf_add_if(struct brcmf_pub *drvr, s32 bsscfgidx, s32 ifidx,
 641                               bool is_p2pdev, const char *name, u8 *mac_addr)
 642 {
 643         struct brcmf_if *ifp;
 644         struct net_device *ndev;
 645
 646         brcmf_dbg(TRACE, "Enter, bsscfgidx=%d, ifidx=%d\n", bsscfgidx, ifidx);
 647
 648         ifp = drvr->iflist[bsscfgidx];
 649         /*
 650          * Delete the existing interface before overwriting it
 651          * in case we missed the BRCMF_E_IF_DEL event.
 652          */
 653         if (ifp) {
 654                 if (ifidx) {
 655                         brcmf_err("ERROR: netdev:%s already exists\n",
 656                                   ifp->ndev->name);
 657                         netif_stop_queue(ifp->ndev);
 658                         brcmf_net_detach(ifp->ndev, false);
 659                         drvr->iflist[bsscfgidx] = NULL;
 660                 } else {
 661                         brcmf_dbg(INFO, "netdev:%s ignore IF event\n",
 662                                   ifp->ndev->name);
 663                         return ERR_PTR(-EINVAL);
 664                 }
 665         }
 666
 667         if (!drvr->settings->p2p_enable && is_p2pdev) {
 668                 /* this is P2P_DEVICE interface */
 669                 brcmf_dbg(INFO, "allocate non-netdev interface\n");
 670                 ifp = kzalloc(sizeof(*ifp), GFP_KERNEL);
 671                 if (!ifp)
 672                         return ERR_PTR(-ENOMEM);
 673         } else {
 674                 brcmf_dbg(INFO, "allocate netdev interface\n");
 675                 /* Allocate netdev, including space for private structure */
 676                 ndev = alloc_netdev(sizeof(*ifp), is_p2pdev ? "p2p%d" : name,
 677                                     NET_NAME_UNKNOWN, ether_setup);
 678                 if (!ndev)
 679                         return ERR_PTR(-ENOMEM);
 680
 681                 ndev->destructor = brcmf_cfg80211_free_netdev;
 682                 ifp = netdev_priv(ndev);
 683                 ifp->ndev = ndev;
 684                 /* store mapping ifidx to bsscfgidx */
 685                 if (drvr->if2bss[ifidx] == BRCMF_BSSIDX_INVALID)
 686                         drvr->if2bss[ifidx] = bsscfgidx;
 687         }
 688
 689         ifp->drvr = drvr;
 690         drvr->iflist[bsscfgidx] = ifp;
 691         ifp->ifidx = ifidx;
 692         ifp->bsscfgidx = bsscfgidx;
 693
 694         init_waitqueue_head(&ifp->pend_8021x_wait);
 695         spin_lock_init(&ifp->netif_stop_lock);
 696
 697         if (mac_addr != NULL)
 698                 memcpy(ifp->mac_addr, mac_addr, ETH_ALEN);
 699
 700         brcmf_dbg(TRACE, " ==== pid:%x, if:%s (%pM) created ===\n",
 701                   current->pid, name, ifp->mac_addr);
 702
 703         return ifp;
 704 }
 705
 706 static void brcmf_del_if(struct brcmf_pub *drvr, s32 bsscfgidx,
 707                          bool rtnl_locked)
 708 {
 709         struct brcmf_if *ifp;
 710
 711         ifp = drvr->iflist[bsscfgidx];
 712         drvr->iflist[bsscfgidx] = NULL;
 713         if (!ifp) {
 714                 brcmf_err("Null interface, bsscfgidx=%d\n", bsscfgidx);
 715                 return;
 716         }
 717         brcmf_dbg(TRACE, "Enter, bsscfgidx=%d, ifidx=%d\n", bsscfgidx,
 718                   ifp->ifidx);
 719         if (drvr->if2bss[ifp->ifidx] == bsscfgidx)
 720                 drvr->if2bss[ifp->ifidx] = BRCMF_BSSIDX_INVALID;
 721         if (ifp->ndev) {
 722                 if (bsscfgidx == 0) {
 723                         if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) {
 724                                 rtnl_lock();
 725                                 brcmf_netdev_stop(ifp->ndev);
 726                                 rtnl_unlock();
 727                         }
 728                 } else {
 729                         netif_stop_queue(ifp->ndev);
 730                 }
 731
 732                 if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) {
 733                         cancel_work_sync(&ifp->setmacaddr_work);
 734                         cancel_work_sync(&ifp->multicast_work);
 735                         cancel_work_sync(&ifp->ndoffload_work);
 736                 }
 737                 brcmf_net_detach(ifp->ndev, rtnl_locked);
 738         } else {
 739                 /* Only p2p device interfaces which get dynamically created
 740                  * end up here. In this case the p2p module should be informed
 741                  * about the removal of the interface within the firmware. If
 742                  * not then p2p commands towards the firmware will cause some
 743                  * serious troublesome side effects. The p2p module will clean
 744                  * up the ifp if needed.
 745                  */
 746                 brcmf_p2p_ifp_removed(ifp, rtnl_locked);
 747                 kfree(ifp);
 748         }
 749 }
 750
 751 void brcmf_remove_interface(struct brcmf_if *ifp, bool rtnl_locked)
 752 {
 753         if (!ifp || WARN_ON(ifp->drvr->iflist[ifp->bsscfgidx] != ifp))
 754                 return;
 755         brcmf_dbg(TRACE, "Enter, bsscfgidx=%d, ifidx=%d\n", ifp->bsscfgidx,
 756                   ifp->ifidx);
 757         brcmf_fws_del_interface(ifp);
 758         brcmf_del_if(ifp->drvr, ifp->bsscfgidx, rtnl_locked);
 759 }
 760
 761 #ifdef CONFIG_INET
 762 #define ARPOL_MAX_ENTRIES       8
 763 static int brcmf_inetaddr_changed(struct notifier_block *nb,
 764                                   unsigned long action, void *data)
 765 {
 766         struct brcmf_pub *drvr = container_of(nb, struct brcmf_pub,
 767                                               inetaddr_notifier);
 768         struct in_ifaddr *ifa = data;
 769         struct net_device *ndev = ifa->ifa_dev->dev;
 770         struct brcmf_if *ifp;
 771         int idx, i, ret;
 772         u32 val;
 773         __be32 addr_table[ARPOL_MAX_ENTRIES] = {0};
 774
 775         /* Find out if the notification is meant for us */
 776         for (idx = 0; idx < BRCMF_MAX_IFS; idx++) {
 777                 ifp = drvr->iflist[idx];
 778                 if (ifp && ifp->ndev == ndev)
 779                         break;
 780                 if (idx == BRCMF_MAX_IFS - 1)
 781                         return NOTIFY_DONE;
 782         }
 783
 784         /* check if arp offload is supported */
 785         ret = brcmf_fil_iovar_int_get(ifp, "arpoe", &val);
 786         if (ret)
 787                 return NOTIFY_OK;
 788
 789         /* old version only support primary index */
 790         ret = brcmf_fil_iovar_int_get(ifp, "arp_version", &val);
 791         if (ret)
 792                 val = 1;
 793         if (val == 1)
 794                 ifp = drvr->iflist[0];
 795
 796         /* retrieve the table from firmware */
 797         ret = brcmf_fil_iovar_data_get(ifp, "arp_hostip", addr_table,
 798                                        sizeof(addr_table));
 799         if (ret) {
 800                 brcmf_err("fail to get arp ip table err:%d\n", ret);
 801                 return NOTIFY_OK;
 802         }
 803
 804         for (i = 0; i < ARPOL_MAX_ENTRIES; i++)
 805                 if (ifa->ifa_address == addr_table[i])
 806                         break;
 807
 808         switch (action) {
 809         case NETDEV_UP:
 810                 if (i == ARPOL_MAX_ENTRIES) {
 811                         brcmf_dbg(TRACE, "add %pI4 to arp table\n",
 812                                   &ifa->ifa_address);
 813                         /* set it directly */
 814                         ret = brcmf_fil_iovar_data_set(ifp, "arp_hostip",
 815                                 &ifa->ifa_address, sizeof(ifa->ifa_address));
 816                         if (ret)
 817                                 brcmf_err("add arp ip err %d\n", ret);
 818                 }
 819                 break;
 820         case NETDEV_DOWN:
 821                 if (i < ARPOL_MAX_ENTRIES) {
 822                         addr_table[i] = 0;
 823                         brcmf_dbg(TRACE, "remove %pI4 from arp table\n",
 824                                   &ifa->ifa_address);
 825                         /* clear the table in firmware */
 826                         ret = brcmf_fil_iovar_data_set(ifp, "arp_hostip_clear",
 827                                                        NULL, 0);
 828                         if (ret) {
 829                                 brcmf_err("fail to clear arp ip table err:%d\n",
 830                                           ret);
 831                                 return NOTIFY_OK;
 832                         }
 833                         for (i = 0; i < ARPOL_MAX_ENTRIES; i++) {
 834                                 if (addr_table[i] == 0)
 835                                         continue;
 836                                 ret = brcmf_fil_iovar_data_set(ifp, "arp_hostip",
 837                                                                &addr_table[i],
 838                                                                sizeof(addr_table[i]));
 839                                 if (ret)
 840                                         brcmf_err("add arp ip err %d\n",
 841                                                   ret);
 842                         }
 843                 }
 844                 break;
 845         default:
 846                 break;
 847         }
 848
 849         return NOTIFY_OK;
 850 }
 851 #endif
 852
 853 #if IS_ENABLED(CONFIG_IPV6)
 854 static int brcmf_inet6addr_changed(struct notifier_block *nb,
 855                                    unsigned long action, void *data)
 856 {
 857         struct brcmf_pub *drvr = container_of(nb, struct brcmf_pub,
 858                                               inet6addr_notifier);
 859         struct inet6_ifaddr *ifa = data;
 860         struct brcmf_if *ifp;
 861         int i;
 862         struct in6_addr *table;
 863
 864         /* Only handle primary interface */
 865         ifp = drvr->iflist[0];
 866         if (!ifp)
 867                 return NOTIFY_DONE;
 868         if (ifp->ndev != ifa->idev->dev)
 869                 return NOTIFY_DONE;
 870
 871         table = ifp->ipv6_addr_tbl;
 872         for (i = 0; i < NDOL_MAX_ENTRIES; i++)
 873                 if (ipv6_addr_equal(&ifa->addr, &table[i]))
 874                         break;
 875
 876         switch (action) {
 877         case NETDEV_UP:
 878                 if (i == NDOL_MAX_ENTRIES) {
 879                         if (ifp->ipv6addr_idx < NDOL_MAX_ENTRIES) {
 880                                 table[ifp->ipv6addr_idx++] = ifa->addr;
 881                         } else {
 882                                 for (i = 0; i < NDOL_MAX_ENTRIES - 1; i++)
 883                                         table[i] = table[i + 1];
 884                                 table[NDOL_MAX_ENTRIES - 1] = ifa->addr;
 885                         }
 886                 }
 887                 break;
 888         case NETDEV_DOWN:
 889                 if (i < NDOL_MAX_ENTRIES)
 890                         for (; i < ifp->ipv6addr_idx; i++)
 891                                 table[i] = table[i + 1];
 892                 break;
 893         default:
 894                 break;
 895         }
 896
 897         schedule_work(&ifp->ndoffload_work);
 898
 899         return NOTIFY_OK;
 900 }
 901 #endif
 902
 903 int brcmf_attach(struct device *dev, struct brcmf_mp_device *settings)
 904 {
 905         struct brcmf_pub *drvr = NULL;
 906         int ret = 0;
 907         int i;
 908
 909         brcmf_dbg(TRACE, "Enter\n");
 910
 911         /* Allocate primary brcmf_info */
 912         drvr = kzalloc(sizeof(struct brcmf_pub), GFP_ATOMIC);
 913         if (!drvr)
 914                 return -ENOMEM;
 915
 916         for (i = 0; i < ARRAY_SIZE(drvr->if2bss); i++)
 917                 drvr->if2bss[i] = BRCMF_BSSIDX_INVALID;
 918
 919         mutex_init(&drvr->proto_block);
 920
 921         /* Link to bus module */
 922         drvr->hdrlen = 0;
 923         drvr->bus_if = dev_get_drvdata(dev);
 924         drvr->bus_if->drvr = drvr;
 925         drvr->settings = settings;
 926
 927         /* attach debug facilities */
 928         brcmf_debug_attach(drvr);
 929
 930         /* Attach and link in the protocol */
 931         ret = brcmf_proto_attach(drvr);
 932         if (ret != 0) {
 933                 brcmf_err("brcmf_prot_attach failed\n");
 934                 goto fail;
 935         }
 936
 937         /* attach firmware event handler */
 938         brcmf_fweh_attach(drvr);
 939
 940         return ret;
 941
 942 fail:
 943         brcmf_detach(dev);
 944
 945         return ret;
 946 }
 947
 948 static int brcmf_revinfo_read(struct seq_file *s, void *data)
 949 {
 950         struct brcmf_bus *bus_if = dev_get_drvdata(s->private);
 951         struct brcmf_rev_info *ri = &bus_if->drvr->revinfo;
 952         char drev[BRCMU_DOTREV_LEN];
 953         char brev[BRCMU_BOARDREV_LEN];
 954
 955         seq_printf(s, "vendorid: 0x%04x\n", ri->vendorid);
 956         seq_printf(s, "deviceid: 0x%04x\n", ri->deviceid);
 957         seq_printf(s, "radiorev: %s\n", brcmu_dotrev_str(ri->radiorev, drev));
 958         seq_printf(s, "chipnum: %u (%x)\n", ri->chipnum, ri->chipnum);
 959         seq_printf(s, "chiprev: %u\n", ri->chiprev);
 960         seq_printf(s, "chippkg: %u\n", ri->chippkg);
 961         seq_printf(s, "corerev: %u\n", ri->corerev);
 962         seq_printf(s, "boardid: 0x%04x\n", ri->boardid);
 963         seq_printf(s, "boardvendor: 0x%04x\n", ri->boardvendor);
 964         seq_printf(s, "boardrev: %s\n", brcmu_boardrev_str(ri->boardrev, brev));
 965         seq_printf(s, "driverrev: %s\n", brcmu_dotrev_str(ri->driverrev, drev));
 966         seq_printf(s, "ucoderev: %u\n", ri->ucoderev);
 967         seq_printf(s, "bus: %u\n", ri->bus);
 968         seq_printf(s, "phytype: %u\n", ri->phytype);
 969         seq_printf(s, "phyrev: %u\n", ri->phyrev);
 970         seq_printf(s, "anarev: %u\n", ri->anarev);
 971         seq_printf(s, "nvramrev: %08x\n", ri->nvramrev);
 972
 973         return 0;
 974 }
 975
 976 int brcmf_bus_start(struct device *dev)
 977 {
 978         int ret = -1;
 979         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 980         struct brcmf_pub *drvr = bus_if->drvr;
 981         struct brcmf_if *ifp;
 982         struct brcmf_if *p2p_ifp;
 983
 984         brcmf_dbg(TRACE, "\n");
 985
 986         /* add primary networking interface */
 987         ifp = brcmf_add_if(drvr, 0, 0, false, "wlan%d", NULL);
 988         if (IS_ERR(ifp))
 989                 return PTR_ERR(ifp);
 990
 991         p2p_ifp = NULL;
 992
 993         /* signal bus ready */
 994         brcmf_bus_change_state(bus_if, BRCMF_BUS_UP);
 995
 996         /* Bus is ready, do any initialization */
 997         ret = brcmf_c_preinit_dcmds(ifp);
 998         if (ret < 0)
 999                 goto fail;
1000
1001         brcmf_debugfs_add_entry(drvr, "revinfo", brcmf_revinfo_read);
1002
1003         /* assure we have chipid before feature attach */
1004         if (!bus_if->chip) {
1005                 bus_if->chip = drvr->revinfo.chipnum;
1006                 bus_if->chiprev = drvr->revinfo.chiprev;
1007                 brcmf_dbg(INFO, "firmware revinfo: chip %x (%d) rev %d\n",
1008                           bus_if->chip, bus_if->chip, bus_if->chiprev);
1009         }
1010         brcmf_feat_attach(drvr);
1011
1012         ret = brcmf_fws_init(drvr);
1013         if (ret < 0)
1014                 goto fail;
1015
1016         brcmf_fws_add_interface(ifp);
1017
1018         drvr->config = brcmf_cfg80211_attach(drvr, bus_if->dev,
1019                                              drvr->settings->p2p_enable);
1020         if (drvr->config == NULL) {
1021                 ret = -ENOMEM;
1022                 goto fail;
1023         }
1024
1025         ret = brcmf_net_attach(ifp, false);
1026
1027         if ((!ret) && (drvr->settings->p2p_enable)) {
1028                 p2p_ifp = drvr->iflist[1];
1029                 if (p2p_ifp)
1030                         ret = brcmf_net_p2p_attach(p2p_ifp);
1031         }
1032
1033         if (ret)
1034                 goto fail;
1035
1036 #ifdef CONFIG_INET
1037         drvr->inetaddr_notifier.notifier_call = brcmf_inetaddr_changed;
1038         ret = register_inetaddr_notifier(&drvr->inetaddr_notifier);
1039         if (ret)
1040                 goto fail;
1041
1042 #if IS_ENABLED(CONFIG_IPV6)
1043         drvr->inet6addr_notifier.notifier_call = brcmf_inet6addr_changed;
1044         ret = register_inet6addr_notifier(&drvr->inet6addr_notifier);
1045         if (ret) {
1046                 unregister_inetaddr_notifier(&drvr->inetaddr_notifier);
1047                 goto fail;
1048         }
1049 #endif
1050 #endif /* CONFIG_INET */
1051
1052         return 0;
1053
1054 fail:
1055         brcmf_err("failed: %d\n", ret);
1056         if (drvr->config) {
1057                 brcmf_cfg80211_detach(drvr->config);
1058                 drvr->config = NULL;
1059         }
1060         if (drvr->fws) {
1061                 brcmf_fws_del_interface(ifp);
1062                 brcmf_fws_deinit(drvr);
1063         }
1064         if (ifp)
1065                 brcmf_net_detach(ifp->ndev, false);
1066         if (p2p_ifp)
1067                 brcmf_net_detach(p2p_ifp->ndev, false);
1068         drvr->iflist[0] = NULL;
1069         drvr->iflist[1] = NULL;
1070         if (drvr->settings->ignore_probe_fail)
1071                 ret = 0;
1072
1073         return ret;
1074 }
1075
1076 void brcmf_bus_add_txhdrlen(struct device *dev, uint len)
1077 {
1078         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1079         struct brcmf_pub *drvr = bus_if->drvr;
1080
1081         if (drvr) {
1082                 drvr->hdrlen += len;
1083         }
1084 }
1085
1086 static void brcmf_bus_detach(struct brcmf_pub *drvr)
1087 {
1088         brcmf_dbg(TRACE, "Enter\n");
1089
1090         if (drvr) {
1091                 /* Stop the bus module */
1092                 brcmf_bus_stop(drvr->bus_if);
1093         }
1094 }
1095
1096 void brcmf_dev_reset(struct device *dev)
1097 {
1098         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1099         struct brcmf_pub *drvr = bus_if->drvr;
1100
1101         if (drvr == NULL)
1102                 return;
1103
1104         if (drvr->iflist[0])
1105                 brcmf_fil_cmd_int_set(drvr->iflist[0], BRCMF_C_TERMINATED, 1);
1106 }
1107
1108 void brcmf_detach(struct device *dev)
1109 {
1110         s32 i;
1111         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1112         struct brcmf_pub *drvr = bus_if->drvr;
1113
1114         brcmf_dbg(TRACE, "Enter\n");
1115
1116         if (drvr == NULL)
1117                 return;
1118
1119 #ifdef CONFIG_INET
1120         unregister_inetaddr_notifier(&drvr->inetaddr_notifier);
1121 #endif
1122
1123 #if IS_ENABLED(CONFIG_IPV6)
1124         unregister_inet6addr_notifier(&drvr->inet6addr_notifier);
1125 #endif
1126
1127         /* stop firmware event handling */
1128         brcmf_fweh_detach(drvr);
1129         if (drvr->config)
1130                 brcmf_p2p_detach(&drvr->config->p2p);
1131
1132         brcmf_bus_change_state(bus_if, BRCMF_BUS_DOWN);
1133
1134         /* make sure primary interface removed last */
1135         for (i = BRCMF_MAX_IFS-1; i > -1; i--)
1136                 brcmf_remove_interface(drvr->iflist[i], false);
1137
1138         brcmf_cfg80211_detach(drvr->config);
1139
1140         brcmf_fws_deinit(drvr);
1141
1142         brcmf_bus_detach(drvr);
1143
1144         brcmf_proto_detach(drvr);
1145
1146         brcmf_debug_detach(drvr);
1147         bus_if->drvr = NULL;
1148         kfree(drvr);
1149 }
1150
1151 s32 brcmf_iovar_data_set(struct device *dev, char *name, void *data, u32 len)
1152 {
1153         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1154         struct brcmf_if *ifp = bus_if->drvr->iflist[0];
1155
1156         return brcmf_fil_iovar_data_set(ifp, name, data, len);
1157 }
1158
1159 static int brcmf_get_pend_8021x_cnt(struct brcmf_if *ifp)
1160 {
1161         return atomic_read(&ifp->pend_8021x_cnt);
1162 }
1163
1164 int brcmf_netdev_wait_pend8021x(struct brcmf_if *ifp)
1165 {
1166         int err;
1167
1168         err = wait_event_timeout(ifp->pend_8021x_wait,
1169                                  !brcmf_get_pend_8021x_cnt(ifp),
1170                                  MAX_WAIT_FOR_8021X_TX);
1171
1172         WARN_ON(!err);
1173
1174         return !err;
1175 }
1176
1177 void brcmf_bus_change_state(struct brcmf_bus *bus, enum brcmf_bus_state state)
1178 {
1179         struct brcmf_pub *drvr = bus->drvr;
1180         struct net_device *ndev;
1181         int ifidx;
1182
1183         brcmf_dbg(TRACE, "%d -> %d\n", bus->state, state);
1184         bus->state = state;
1185
1186         if (state == BRCMF_BUS_UP) {
1187                 for (ifidx = 0; ifidx < BRCMF_MAX_IFS; ifidx++) {
1188                         if ((drvr->iflist[ifidx]) &&
1189                             (drvr->iflist[ifidx]->ndev)) {
1190                                 ndev = drvr->iflist[ifidx]->ndev;
1191                                 if (netif_queue_stopped(ndev))
1192                                         netif_wake_queue(ndev);
1193                         }
1194                 }
1195         }
1196 }
1197
1198 static void brcmf_driver_register(struct work_struct *work)
1199 {
1200 #ifdef CONFIG_BRCMFMAC_SDIO
1201         brcmf_sdio_register();
1202 #endif
1203 #ifdef CONFIG_BRCMFMAC_USB
1204         brcmf_usb_register();
1205 #endif
1206 #ifdef CONFIG_BRCMFMAC_PCIE
1207         brcmf_pcie_register();
1208 #endif
1209 }
1210 static DECLARE_WORK(brcmf_driver_work, brcmf_driver_register);
1211
1212 int __init brcmf_core_init(void)
1213 {
1214         if (!schedule_work(&brcmf_driver_work))
1215                 return -EBUSY;
1216
1217         return 0;
1218 }
1219
1220 void __exit brcmf_core_exit(void)
1221 {
1222         cancel_work_sync(&brcmf_driver_work);
1223
1224 #ifdef CONFIG_BRCMFMAC_SDIO
1225         brcmf_sdio_exit();
1226 #endif
1227 #ifdef CONFIG_BRCMFMAC_USB
1228         brcmf_usb_exit();
1229 #endif
1230 #ifdef CONFIG_BRCMFMAC_PCIE
1231         brcmf_pcie_exit();
1232 #endif
1233 }
1234