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/ieee80211_radiotap.h>
  25 #include <net/ipv6.h>
  26 #include <brcmu_utils.h>
  27 #include <brcmu_wifi.h>
  28
  29 #include "core.h"
  30 #include "bus.h"
  31 #include "debug.h"
  32 #include "fwil_types.h"
  33 #include "p2p.h"
  34 #include "pno.h"
  35 #include "cfg80211.h"
  36 #include "fwil.h"
  37 #include "feature.h"
  38 #include "proto.h"
  39 #include "pcie.h"
  40 #include "common.h"
  41
  42 #define MAX_WAIT_FOR_8021X_TX                   msecs_to_jiffies(950)
  43
  44 #define BRCMF_BSSIDX_INVALID                    -1
  45
  46 char *brcmf_ifname(struct brcmf_if *ifp)
  47 {
  48         if (!ifp)
  49                 return "<if_null>";
  50
  51         if (ifp->ndev)
  52                 return ifp->ndev->name;
  53
  54         return "<if_none>";
  55 }
  56
  57 struct brcmf_if *brcmf_get_ifp(struct brcmf_pub *drvr, int ifidx)
  58 {
  59         struct brcmf_if *ifp;
  60         s32 bsscfgidx;
  61
  62         if (ifidx < 0 || ifidx >= BRCMF_MAX_IFS) {
  63                 brcmf_err("ifidx %d out of range\n", ifidx);
  64                 return NULL;
  65         }
  66
  67         ifp = NULL;
  68         bsscfgidx = drvr->if2bss[ifidx];
  69         if (bsscfgidx >= 0)
  70                 ifp = drvr->iflist[bsscfgidx];
  71
  72         return ifp;
  73 }
  74
  75 void brcmf_configure_arp_nd_offload(struct brcmf_if *ifp, bool enable)
  76 {
  77         s32 err;
  78         u32 mode;
  79
  80         if (enable)
  81                 mode = BRCMF_ARP_OL_AGENT | BRCMF_ARP_OL_PEER_AUTO_REPLY;
  82         else
  83                 mode = 0;
  84
  85         /* Try to set and enable ARP offload feature, this may fail, then it  */
  86         /* is simply not supported and err 0 will be returned                 */
  87         err = brcmf_fil_iovar_int_set(ifp, "arp_ol", mode);
  88         if (err) {
  89                 brcmf_dbg(TRACE, "failed to set ARP offload mode to 0x%x, err = %d\n",
  90                           mode, err);
  91         } else {
  92                 err = brcmf_fil_iovar_int_set(ifp, "arpoe", enable);
  93                 if (err) {
  94                         brcmf_dbg(TRACE, "failed to configure (%d) ARP offload err = %d\n",
  95                                   enable, err);
  96                 } else {
  97                         brcmf_dbg(TRACE, "successfully configured (%d) ARP offload to 0x%x\n",
  98                                   enable, mode);
  99                 }
 100         }
 101
 102         err = brcmf_fil_iovar_int_set(ifp, "ndoe", enable);
 103         if (err) {
 104                 brcmf_dbg(TRACE, "failed to configure (%d) ND offload err = %d\n",
 105                           enable, err);
 106         } else {
 107                 brcmf_dbg(TRACE, "successfully configured (%d) ND offload to 0x%x\n",
 108                           enable, mode);
 109         }
 110 }
 111
 112 static void _brcmf_set_multicast_list(struct work_struct *work)
 113 {
 114         struct brcmf_if *ifp;
 115         struct net_device *ndev;
 116         struct netdev_hw_addr *ha;
 117         u32 cmd_value, cnt;
 118         __le32 cnt_le;
 119         char *buf, *bufp;
 120         u32 buflen;
 121         s32 err;
 122
 123         ifp = container_of(work, struct brcmf_if, multicast_work);
 124
 125         brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx);
 126
 127         ndev = ifp->ndev;
 128
 129         /* Determine initial value of allmulti flag */
 130         cmd_value = (ndev->flags & IFF_ALLMULTI) ? true : false;
 131
 132         /* Send down the multicast list first. */
 133         cnt = netdev_mc_count(ndev);
 134         buflen = sizeof(cnt) + (cnt * ETH_ALEN);
 135         buf = kmalloc(buflen, GFP_ATOMIC);
 136         if (!buf)
 137                 return;
 138         bufp = buf;
 139
 140         cnt_le = cpu_to_le32(cnt);
 141         memcpy(bufp, &cnt_le, sizeof(cnt_le));
 142         bufp += sizeof(cnt_le);
 143
 144         netdev_for_each_mc_addr(ha, ndev) {
 145                 if (!cnt)
 146                         break;
 147                 memcpy(bufp, ha->addr, ETH_ALEN);
 148                 bufp += ETH_ALEN;
 149                 cnt--;
 150         }
 151
 152         err = brcmf_fil_iovar_data_set(ifp, "mcast_list", buf, buflen);
 153         if (err < 0) {
 154                 brcmf_err("Setting mcast_list failed, %d\n", err);
 155                 cmd_value = cnt ? true : cmd_value;
 156         }
 157
 158         kfree(buf);
 159
 160         /*
 161          * Now send the allmulti setting.  This is based on the setting in the
 162          * net_device flags, but might be modified above to be turned on if we
 163          * were trying to set some addresses and dongle rejected it...
 164          */
 165         err = brcmf_fil_iovar_int_set(ifp, "allmulti", cmd_value);
 166         if (err < 0)
 167                 brcmf_err("Setting allmulti failed, %d\n", err);
 168
 169         /*Finally, pick up the PROMISC flag */
 170         cmd_value = (ndev->flags & IFF_PROMISC) ? true : false;
 171         err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_PROMISC, cmd_value);
 172         if (err < 0)
 173                 brcmf_err("Setting BRCMF_C_SET_PROMISC failed, %d\n",
 174                           err);
 175         brcmf_configure_arp_nd_offload(ifp, !cmd_value);
 176 }
 177
 178 #if IS_ENABLED(CONFIG_IPV6)
 179 static void _brcmf_update_ndtable(struct work_struct *work)
 180 {
 181         struct brcmf_if *ifp;
 182         int i, ret;
 183
 184         ifp = container_of(work, struct brcmf_if, ndoffload_work);
 185
 186         /* clear the table in firmware */
 187         ret = brcmf_fil_iovar_data_set(ifp, "nd_hostip_clear", NULL, 0);
 188         if (ret) {
 189                 brcmf_dbg(TRACE, "fail to clear nd ip table err:%d\n", ret);
 190                 return;
 191         }
 192
 193         for (i = 0; i < ifp->ipv6addr_idx; i++) {
 194                 ret = brcmf_fil_iovar_data_set(ifp, "nd_hostip",
 195                                                &ifp->ipv6_addr_tbl[i],
 196                                                sizeof(struct in6_addr));
 197                 if (ret)
 198                         brcmf_err("add nd ip err %d\n", ret);
 199         }
 200 }
 201 #else
 202 static void _brcmf_update_ndtable(struct work_struct *work)
 203 {
 204 }
 205 #endif
 206
 207 static int brcmf_netdev_set_mac_address(struct net_device *ndev, void *addr)
 208 {
 209         struct brcmf_if *ifp = netdev_priv(ndev);
 210         struct sockaddr *sa = (struct sockaddr *)addr;
 211         int err;
 212
 213         brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx);
 214
 215         err = brcmf_fil_iovar_data_set(ifp, "cur_etheraddr", sa->sa_data,
 216                                        ETH_ALEN);
 217         if (err < 0) {
 218                 brcmf_err("Setting cur_etheraddr failed, %d\n", err);
 219         } else {
 220                 brcmf_dbg(TRACE, "updated to %pM\n", sa->sa_data);
 221                 memcpy(ifp->mac_addr, sa->sa_data, ETH_ALEN);
 222                 memcpy(ifp->ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
 223         }
 224         return err;
 225 }
 226
 227 static void brcmf_netdev_set_multicast_list(struct net_device *ndev)
 228 {
 229         struct brcmf_if *ifp = netdev_priv(ndev);
 230
 231         schedule_work(&ifp->multicast_work);
 232 }
 233
 234 /**
 235  * brcmf_skb_is_iapp - checks if skb is an IAPP packet
 236  *
 237  * @skb: skb to check
 238  */
 239 static bool brcmf_skb_is_iapp(struct sk_buff *skb)
 240 {
 241         static const u8 iapp_l2_update_packet[6] __aligned(2) = {
 242                 0x00, 0x01, 0xaf, 0x81, 0x01, 0x00,
 243         };
 244         unsigned char *eth_data;
 245 #if !defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS)
 246         const u16 *a, *b;
 247 #endif
 248
 249         if (skb->len - skb->mac_len != 6 ||
 250             !is_multicast_ether_addr(eth_hdr(skb)->h_dest))
 251                 return false;
 252
 253         eth_data = skb_mac_header(skb) + ETH_HLEN;
 254 #if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS)
 255         return !(((*(const u32 *)eth_data) ^ (*(const u32 *)iapp_l2_update_packet)) |
 256                  ((*(const u16 *)(eth_data + 4)) ^ (*(const u16 *)(iapp_l2_update_packet + 4))));
 257 #else
 258         a = (const u16 *)eth_data;
 259         b = (const u16 *)iapp_l2_update_packet;
 260
 261         return !((a[0] ^ b[0]) | (a[1] ^ b[1]) | (a[2] ^ b[2]));
 262 #endif
 263 }
 264
 265 static netdev_tx_t brcmf_netdev_start_xmit(struct sk_buff *skb,
 266                                            struct net_device *ndev)
 267 {
 268         int ret;
 269         struct brcmf_if *ifp = netdev_priv(ndev);
 270         struct brcmf_pub *drvr = ifp->drvr;
 271         struct ethhdr *eh;
 272         int head_delta;
 273         unsigned int tx_bytes = skb->len;
 274
 275         brcmf_dbg(DATA, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx);
 276
 277         /* Can the device send data? */
 278         if (drvr->bus_if->state != BRCMF_BUS_UP) {
 279                 brcmf_err("xmit rejected state=%d\n", drvr->bus_if->state);
 280                 netif_stop_queue(ndev);
 281                 dev_kfree_skb(skb);
 282                 ret = -ENODEV;
 283                 goto done;
 284         }
 285
 286         /* Some recent Broadcom's firmwares disassociate STA when they receive
 287          * an 802.11f ADD frame. This behavior can lead to a local DoS security
 288          * issue. Attacker may trigger disassociation of any STA by sending a
 289          * proper Ethernet frame to the wireless interface.
 290          *
 291          * Moreover this feature may break AP interfaces in some specific
 292          * setups. This applies e.g. to the bridge with hairpin mode enabled and
 293          * IFLA_BRPORT_MCAST_TO_UCAST set. IAPP packet generated by a firmware
 294          * will get passed back to the wireless interface and cause immediate
 295          * disassociation of a just-connected STA.
 296          */
 297         if (!drvr->settings->iapp && brcmf_skb_is_iapp(skb)) {
 298                 dev_kfree_skb(skb);
 299                 ret = -EINVAL;
 300                 goto done;
 301         }
 302
 303         /* Make sure there's enough writeable headroom */
 304         if (skb_headroom(skb) < drvr->hdrlen || skb_header_cloned(skb)) {
 305                 head_delta = max_t(int, drvr->hdrlen - skb_headroom(skb), 0);
 306
 307                 brcmf_dbg(INFO, "%s: insufficient headroom (%d)\n",
 308                           brcmf_ifname(ifp), head_delta);
 309                 atomic_inc(&drvr->bus_if->stats.pktcowed);
 310                 ret = pskb_expand_head(skb, ALIGN(head_delta, NET_SKB_PAD), 0,
 311                                        GFP_ATOMIC);
 312                 if (ret < 0) {
 313                         brcmf_err("%s: failed to expand headroom\n",
 314                                   brcmf_ifname(ifp));
 315                         atomic_inc(&drvr->bus_if->stats.pktcow_failed);
 316                         dev_kfree_skb(skb);
 317                         goto done;
 318                 }
 319         }
 320
 321         /* validate length for ether packet */
 322         if (skb->len < sizeof(*eh)) {
 323                 ret = -EINVAL;
 324                 dev_kfree_skb(skb);
 325                 goto done;
 326         }
 327
 328         eh = (struct ethhdr *)(skb->data);
 329
 330         if (eh->h_proto == htons(ETH_P_PAE))
 331                 atomic_inc(&ifp->pend_8021x_cnt);
 332
 333         /* determine the priority */
 334         if ((skb->priority == 0) || (skb->priority > 7))
 335                 skb->priority = cfg80211_classify8021d(skb, NULL);
 336
 337         ret = brcmf_proto_tx_queue_data(drvr, ifp->ifidx, skb);
 338         if (ret < 0)
 339                 brcmf_txfinalize(ifp, skb, false);
 340
 341 done:
 342         if (ret) {
 343                 ndev->stats.tx_dropped++;
 344         } else {
 345                 ndev->stats.tx_packets++;
 346                 ndev->stats.tx_bytes += tx_bytes;
 347         }
 348
 349         /* Return ok: we always eat the packet */
 350         return NETDEV_TX_OK;
 351 }
 352
 353 void brcmf_txflowblock_if(struct brcmf_if *ifp,
 354                           enum brcmf_netif_stop_reason reason, bool state)
 355 {
 356         unsigned long flags;
 357
 358         if (!ifp || !ifp->ndev)
 359                 return;
 360
 361         brcmf_dbg(TRACE, "enter: bsscfgidx=%d stop=0x%X reason=%d state=%d\n",
 362                   ifp->bsscfgidx, ifp->netif_stop, reason, state);
 363
 364         spin_lock_irqsave(&ifp->netif_stop_lock, flags);
 365         if (state) {
 366                 if (!ifp->netif_stop)
 367                         netif_stop_queue(ifp->ndev);
 368                 ifp->netif_stop |= reason;
 369         } else {
 370                 ifp->netif_stop &= ~reason;
 371                 if (!ifp->netif_stop)
 372                         netif_wake_queue(ifp->ndev);
 373         }
 374         spin_unlock_irqrestore(&ifp->netif_stop_lock, flags);
 375 }
 376
 377 void brcmf_netif_rx(struct brcmf_if *ifp, struct sk_buff *skb)
 378 {
 379         /* Most of Broadcom's firmwares send 802.11f ADD frame every time a new
 380          * STA connects to the AP interface. This is an obsoleted standard most
 381          * users don't use, so don't pass these frames up unless requested.
 382          */
 383         if (!ifp->drvr->settings->iapp && brcmf_skb_is_iapp(skb)) {
 384                 brcmu_pkt_buf_free_skb(skb);
 385                 return;
 386         }
 387
 388         if (skb->pkt_type == PACKET_MULTICAST)
 389                 ifp->ndev->stats.multicast++;
 390
 391         if (!(ifp->ndev->flags & IFF_UP)) {
 392                 brcmu_pkt_buf_free_skb(skb);
 393                 return;
 394         }
 395
 396         ifp->ndev->stats.rx_bytes += skb->len;
 397         ifp->ndev->stats.rx_packets++;
 398
 399         brcmf_dbg(DATA, "rx proto=0x%X\n", ntohs(skb->protocol));
 400         if (in_interrupt())
 401                 netif_rx(skb);
 402         else
 403                 /* If the receive is not processed inside an ISR,
 404                  * the softirqd must be woken explicitly to service
 405                  * the NET_RX_SOFTIRQ.  This is handled by netif_rx_ni().
 406                  */
 407                 netif_rx_ni(skb);
 408 }
 409
 410 void brcmf_netif_mon_rx(struct brcmf_if *ifp, struct sk_buff *skb)
 411 {
 412         if (brcmf_feat_is_enabled(ifp, BRCMF_FEAT_MONITOR_FMT_RADIOTAP)) {
 413                 /* Do nothing */
 414         } else {
 415                 struct ieee80211_radiotap_header *radiotap;
 416
 417                 /* TODO: use RX status to fill some radiotap data */
 418                 radiotap = skb_push(skb, sizeof(*radiotap));
 419                 memset(radiotap, 0, sizeof(*radiotap));
 420                 radiotap->it_len = cpu_to_le16(sizeof(*radiotap));
 421
 422                 /* TODO: 4 bytes with receive status? */
 423                 skb->len -= 4;
 424         }
 425
 426         skb->dev = ifp->ndev;
 427         skb_reset_mac_header(skb);
 428         skb->pkt_type = PACKET_OTHERHOST;
 429         skb->protocol = htons(ETH_P_802_2);
 430
 431         brcmf_netif_rx(ifp, skb);
 432 }
 433
 434 static int brcmf_rx_hdrpull(struct brcmf_pub *drvr, struct sk_buff *skb,
 435                             struct brcmf_if **ifp)
 436 {
 437         int ret;
 438
 439         /* process and remove protocol-specific header */
 440         ret = brcmf_proto_hdrpull(drvr, true, skb, ifp);
 441
 442         if (ret || !(*ifp) || !(*ifp)->ndev) {
 443                 if (ret != -ENODATA && *ifp && (*ifp)->ndev)
 444                         (*ifp)->ndev->stats.rx_errors++;
 445                 brcmu_pkt_buf_free_skb(skb);
 446                 return -ENODATA;
 447         }
 448
 449         skb->protocol = eth_type_trans(skb, (*ifp)->ndev);
 450         return 0;
 451 }
 452
 453 void brcmf_rx_frame(struct device *dev, struct sk_buff *skb, bool handle_event)
 454 {
 455         struct brcmf_if *ifp;
 456         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 457         struct brcmf_pub *drvr = bus_if->drvr;
 458
 459         brcmf_dbg(DATA, "Enter: %s: rxp=%p\n", dev_name(dev), skb);
 460
 461         if (brcmf_rx_hdrpull(drvr, skb, &ifp))
 462                 return;
 463
 464         if (brcmf_proto_is_reorder_skb(skb)) {
 465                 brcmf_proto_rxreorder(ifp, skb);
 466         } else {
 467                 /* Process special event packets */
 468                 if (handle_event)
 469                         brcmf_fweh_process_skb(ifp->drvr, skb,
 470                                                BCMILCP_SUBTYPE_VENDOR_LONG);
 471
 472                 brcmf_netif_rx(ifp, skb);
 473         }
 474 }
 475
 476 void brcmf_rx_event(struct device *dev, struct sk_buff *skb)
 477 {
 478         struct brcmf_if *ifp;
 479         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 480         struct brcmf_pub *drvr = bus_if->drvr;
 481
 482         brcmf_dbg(EVENT, "Enter: %s: rxp=%p\n", dev_name(dev), skb);
 483
 484         if (brcmf_rx_hdrpull(drvr, skb, &ifp))
 485                 return;
 486
 487         brcmf_fweh_process_skb(ifp->drvr, skb, 0);
 488         brcmu_pkt_buf_free_skb(skb);
 489 }
 490
 491 void brcmf_txfinalize(struct brcmf_if *ifp, struct sk_buff *txp, bool success)
 492 {
 493         struct ethhdr *eh;
 494         u16 type;
 495
 496         eh = (struct ethhdr *)(txp->data);
 497         type = ntohs(eh->h_proto);
 498
 499         if (type == ETH_P_PAE) {
 500                 atomic_dec(&ifp->pend_8021x_cnt);
 501                 if (waitqueue_active(&ifp->pend_8021x_wait))
 502                         wake_up(&ifp->pend_8021x_wait);
 503         }
 504
 505         if (!success)
 506                 ifp->ndev->stats.tx_errors++;
 507
 508         brcmu_pkt_buf_free_skb(txp);
 509 }
 510
 511 static void brcmf_ethtool_get_drvinfo(struct net_device *ndev,
 512                                     struct ethtool_drvinfo *info)
 513 {
 514         struct brcmf_if *ifp = netdev_priv(ndev);
 515         struct brcmf_pub *drvr = ifp->drvr;
 516         char drev[BRCMU_DOTREV_LEN] = "n/a";
 517
 518         if (drvr->revinfo.result == 0)
 519                 brcmu_dotrev_str(drvr->revinfo.driverrev, drev);
 520         strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
 521         strlcpy(info->version, drev, sizeof(info->version));
 522         strlcpy(info->fw_version, drvr->fwver, sizeof(info->fw_version));
 523         strlcpy(info->bus_info, dev_name(drvr->bus_if->dev),
 524                 sizeof(info->bus_info));
 525 }
 526
 527 static const struct ethtool_ops brcmf_ethtool_ops = {
 528         .get_drvinfo = brcmf_ethtool_get_drvinfo,
 529 };
 530
 531 static int brcmf_netdev_stop(struct net_device *ndev)
 532 {
 533         struct brcmf_if *ifp = netdev_priv(ndev);
 534
 535         brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx);
 536
 537         brcmf_cfg80211_down(ndev);
 538
 539         brcmf_fil_iovar_data_set(ifp, "arp_hostip_clear", NULL, 0);
 540
 541         brcmf_net_setcarrier(ifp, false);
 542
 543         return 0;
 544 }
 545
 546 static int brcmf_netdev_open(struct net_device *ndev)
 547 {
 548         struct brcmf_if *ifp = netdev_priv(ndev);
 549         struct brcmf_pub *drvr = ifp->drvr;
 550         struct brcmf_bus *bus_if = drvr->bus_if;
 551         u32 toe_ol;
 552
 553         brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx);
 554
 555         /* If bus is not ready, can't continue */
 556         if (bus_if->state != BRCMF_BUS_UP) {
 557                 brcmf_err("failed bus is not ready\n");
 558                 return -EAGAIN;
 559         }
 560
 561         atomic_set(&ifp->pend_8021x_cnt, 0);
 562
 563         /* Get current TOE mode from dongle */
 564         if (brcmf_fil_iovar_int_get(ifp, "toe_ol", &toe_ol) >= 0
 565             && (toe_ol & TOE_TX_CSUM_OL) != 0)
 566                 ndev->features |= NETIF_F_IP_CSUM;
 567         else
 568                 ndev->features &= ~NETIF_F_IP_CSUM;
 569
 570         if (brcmf_cfg80211_up(ndev)) {
 571                 brcmf_err("failed to bring up cfg80211\n");
 572                 return -EIO;
 573         }
 574
 575         /* Clear, carrier, set when connected or AP mode. */
 576         netif_carrier_off(ndev);
 577         return 0;
 578 }
 579
 580 static const struct net_device_ops brcmf_netdev_ops_pri = {
 581         .ndo_open = brcmf_netdev_open,
 582         .ndo_stop = brcmf_netdev_stop,
 583         .ndo_start_xmit = brcmf_netdev_start_xmit,
 584         .ndo_set_mac_address = brcmf_netdev_set_mac_address,
 585         .ndo_set_rx_mode = brcmf_netdev_set_multicast_list
 586 };
 587
 588 int brcmf_net_attach(struct brcmf_if *ifp, bool rtnl_locked)
 589 {
 590         struct brcmf_pub *drvr = ifp->drvr;
 591         struct net_device *ndev;
 592         s32 err;
 593
 594         brcmf_dbg(TRACE, "Enter, bsscfgidx=%d mac=%pM\n", ifp->bsscfgidx,
 595                   ifp->mac_addr);
 596         ndev = ifp->ndev;
 597
 598         /* set appropriate operations */
 599         ndev->netdev_ops = &brcmf_netdev_ops_pri;
 600
 601         ndev->needed_headroom += drvr->hdrlen;
 602         ndev->ethtool_ops = &brcmf_ethtool_ops;
 603
 604         /* set the mac address & netns */
 605         memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
 606         dev_net_set(ndev, wiphy_net(cfg_to_wiphy(drvr->config)));
 607
 608         INIT_WORK(&ifp->multicast_work, _brcmf_set_multicast_list);
 609         INIT_WORK(&ifp->ndoffload_work, _brcmf_update_ndtable);
 610
 611         if (rtnl_locked)
 612                 err = register_netdevice(ndev);
 613         else
 614                 err = register_netdev(ndev);
 615         if (err != 0) {
 616                 brcmf_err("couldn't register the net device\n");
 617                 goto fail;
 618         }
 619
 620         ndev->priv_destructor = brcmf_cfg80211_free_netdev;
 621         brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name);
 622         return 0;
 623
 624 fail:
 625         drvr->iflist[ifp->bsscfgidx] = NULL;
 626         ndev->netdev_ops = NULL;
 627         return -EBADE;
 628 }
 629
 630 static void brcmf_net_detach(struct net_device *ndev, bool rtnl_locked)
 631 {
 632         if (ndev->reg_state == NETREG_REGISTERED) {
 633                 if (rtnl_locked)
 634                         unregister_netdevice(ndev);
 635                 else
 636                         unregister_netdev(ndev);
 637         } else {
 638                 brcmf_cfg80211_free_netdev(ndev);
 639                 free_netdev(ndev);
 640         }
 641 }
 642
 643 void brcmf_net_setcarrier(struct brcmf_if *ifp, bool on)
 644 {
 645         struct net_device *ndev;
 646
 647         brcmf_dbg(TRACE, "Enter, bsscfgidx=%d carrier=%d\n", ifp->bsscfgidx,
 648                   on);
 649
 650         ndev = ifp->ndev;
 651         brcmf_txflowblock_if(ifp, BRCMF_NETIF_STOP_REASON_DISCONNECTED, !on);
 652         if (on) {
 653                 if (!netif_carrier_ok(ndev))
 654                         netif_carrier_on(ndev);
 655
 656         } else {
 657                 if (netif_carrier_ok(ndev))
 658                         netif_carrier_off(ndev);
 659         }
 660 }
 661
 662 static int brcmf_net_p2p_open(struct net_device *ndev)
 663 {
 664         brcmf_dbg(TRACE, "Enter\n");
 665
 666         return brcmf_cfg80211_up(ndev);
 667 }
 668
 669 static int brcmf_net_p2p_stop(struct net_device *ndev)
 670 {
 671         brcmf_dbg(TRACE, "Enter\n");
 672
 673         return brcmf_cfg80211_down(ndev);
 674 }
 675
 676 static netdev_tx_t brcmf_net_p2p_start_xmit(struct sk_buff *skb,
 677                                             struct net_device *ndev)
 678 {
 679         if (skb)
 680                 dev_kfree_skb_any(skb);
 681
 682         return NETDEV_TX_OK;
 683 }
 684
 685 static const struct net_device_ops brcmf_netdev_ops_p2p = {
 686         .ndo_open = brcmf_net_p2p_open,
 687         .ndo_stop = brcmf_net_p2p_stop,
 688         .ndo_start_xmit = brcmf_net_p2p_start_xmit
 689 };
 690
 691 static int brcmf_net_p2p_attach(struct brcmf_if *ifp)
 692 {
 693         struct net_device *ndev;
 694
 695         brcmf_dbg(TRACE, "Enter, bsscfgidx=%d mac=%pM\n", ifp->bsscfgidx,
 696                   ifp->mac_addr);
 697         ndev = ifp->ndev;
 698
 699         ndev->netdev_ops = &brcmf_netdev_ops_p2p;
 700
 701         /* set the mac address */
 702         memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
 703
 704         if (register_netdev(ndev) != 0) {
 705                 brcmf_err("couldn't register the p2p net device\n");
 706                 goto fail;
 707         }
 708
 709         brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name);
 710
 711         return 0;
 712
 713 fail:
 714         ifp->drvr->iflist[ifp->bsscfgidx] = NULL;
 715         ndev->netdev_ops = NULL;
 716         return -EBADE;
 717 }
 718
 719 struct brcmf_if *brcmf_add_if(struct brcmf_pub *drvr, s32 bsscfgidx, s32 ifidx,
 720                               bool is_p2pdev, const char *name, u8 *mac_addr)
 721 {
 722         struct brcmf_if *ifp;
 723         struct net_device *ndev;
 724
 725         brcmf_dbg(TRACE, "Enter, bsscfgidx=%d, ifidx=%d\n", bsscfgidx, ifidx);
 726
 727         ifp = drvr->iflist[bsscfgidx];
 728         /*
 729          * Delete the existing interface before overwriting it
 730          * in case we missed the BRCMF_E_IF_DEL event.
 731          */
 732         if (ifp) {
 733                 if (ifidx) {
 734                         brcmf_err("ERROR: netdev:%s already exists\n",
 735                                   ifp->ndev->name);
 736                         netif_stop_queue(ifp->ndev);
 737                         brcmf_net_detach(ifp->ndev, false);
 738                         drvr->iflist[bsscfgidx] = NULL;
 739                 } else {
 740                         brcmf_dbg(INFO, "netdev:%s ignore IF event\n",
 741                                   ifp->ndev->name);
 742                         return ERR_PTR(-EINVAL);
 743                 }
 744         }
 745
 746         if (!drvr->settings->p2p_enable && is_p2pdev) {
 747                 /* this is P2P_DEVICE interface */
 748                 brcmf_dbg(INFO, "allocate non-netdev interface\n");
 749                 ifp = kzalloc(sizeof(*ifp), GFP_KERNEL);
 750                 if (!ifp)
 751                         return ERR_PTR(-ENOMEM);
 752         } else {
 753                 brcmf_dbg(INFO, "allocate netdev interface\n");
 754                 /* Allocate netdev, including space for private structure */
 755                 ndev = alloc_netdev(sizeof(*ifp), is_p2pdev ? "p2p%d" : name,
 756                                     NET_NAME_UNKNOWN, ether_setup);
 757                 if (!ndev)
 758                         return ERR_PTR(-ENOMEM);
 759
 760                 ndev->needs_free_netdev = true;
 761                 ifp = netdev_priv(ndev);
 762                 ifp->ndev = ndev;
 763                 /* store mapping ifidx to bsscfgidx */
 764                 if (drvr->if2bss[ifidx] == BRCMF_BSSIDX_INVALID)
 765                         drvr->if2bss[ifidx] = bsscfgidx;
 766         }
 767
 768         ifp->drvr = drvr;
 769         drvr->iflist[bsscfgidx] = ifp;
 770         ifp->ifidx = ifidx;
 771         ifp->bsscfgidx = bsscfgidx;
 772
 773         init_waitqueue_head(&ifp->pend_8021x_wait);
 774         spin_lock_init(&ifp->netif_stop_lock);
 775
 776         if (mac_addr != NULL)
 777                 memcpy(ifp->mac_addr, mac_addr, ETH_ALEN);
 778
 779         brcmf_dbg(TRACE, " ==== pid:%x, if:%s (%pM) created ===\n",
 780                   current->pid, name, ifp->mac_addr);
 781
 782         return ifp;
 783 }
 784
 785 static void brcmf_del_if(struct brcmf_pub *drvr, s32 bsscfgidx,
 786                          bool rtnl_locked)
 787 {
 788         struct brcmf_if *ifp;
 789         int ifidx;
 790
 791         ifp = drvr->iflist[bsscfgidx];
 792         if (!ifp) {
 793                 brcmf_err("Null interface, bsscfgidx=%d\n", bsscfgidx);
 794                 return;
 795         }
 796         brcmf_dbg(TRACE, "Enter, bsscfgidx=%d, ifidx=%d\n", bsscfgidx,
 797                   ifp->ifidx);
 798         ifidx = ifp->ifidx;
 799
 800         if (ifp->ndev) {
 801                 if (bsscfgidx == 0) {
 802                         if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) {
 803                                 rtnl_lock();
 804                                 brcmf_netdev_stop(ifp->ndev);
 805                                 rtnl_unlock();
 806                         }
 807                 } else {
 808                         netif_stop_queue(ifp->ndev);
 809                 }
 810
 811                 if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) {
 812                         cancel_work_sync(&ifp->multicast_work);
 813                         cancel_work_sync(&ifp->ndoffload_work);
 814                 }
 815                 brcmf_net_detach(ifp->ndev, rtnl_locked);
 816         } else {
 817                 /* Only p2p device interfaces which get dynamically created
 818                  * end up here. In this case the p2p module should be informed
 819                  * about the removal of the interface within the firmware. If
 820                  * not then p2p commands towards the firmware will cause some
 821                  * serious troublesome side effects. The p2p module will clean
 822                  * up the ifp if needed.
 823                  */
 824                 brcmf_p2p_ifp_removed(ifp, rtnl_locked);
 825                 kfree(ifp);
 826         }
 827
 828         drvr->iflist[bsscfgidx] = NULL;
 829         if (drvr->if2bss[ifidx] == bsscfgidx)
 830                 drvr->if2bss[ifidx] = BRCMF_BSSIDX_INVALID;
 831 }
 832
 833 void brcmf_remove_interface(struct brcmf_if *ifp, bool rtnl_locked)
 834 {
 835         if (!ifp || WARN_ON(ifp->drvr->iflist[ifp->bsscfgidx] != ifp))
 836                 return;
 837         brcmf_dbg(TRACE, "Enter, bsscfgidx=%d, ifidx=%d\n", ifp->bsscfgidx,
 838                   ifp->ifidx);
 839         brcmf_proto_del_if(ifp->drvr, ifp);
 840         brcmf_del_if(ifp->drvr, ifp->bsscfgidx, rtnl_locked);
 841 }
 842
 843 static int brcmf_psm_watchdog_notify(struct brcmf_if *ifp,
 844                                      const struct brcmf_event_msg *evtmsg,
 845                                      void *data)
 846 {
 847         int err;
 848
 849         brcmf_dbg(TRACE, "enter: bsscfgidx=%d\n", ifp->bsscfgidx);
 850
 851         brcmf_err("PSM's watchdog has fired!\n");
 852
 853         err = brcmf_debug_create_memdump(ifp->drvr->bus_if, data,
 854                                          evtmsg->datalen);
 855         if (err)
 856                 brcmf_err("Failed to get memory dump, %d\n", err);
 857
 858         return err;
 859 }
 860
 861 #ifdef CONFIG_INET
 862 #define ARPOL_MAX_ENTRIES       8
 863 static int brcmf_inetaddr_changed(struct notifier_block *nb,
 864                                   unsigned long action, void *data)
 865 {
 866         struct brcmf_pub *drvr = container_of(nb, struct brcmf_pub,
 867                                               inetaddr_notifier);
 868         struct in_ifaddr *ifa = data;
 869         struct net_device *ndev = ifa->ifa_dev->dev;
 870         struct brcmf_if *ifp;
 871         int idx, i, ret;
 872         u32 val;
 873         __be32 addr_table[ARPOL_MAX_ENTRIES] = {0};
 874
 875         /* Find out if the notification is meant for us */
 876         for (idx = 0; idx < BRCMF_MAX_IFS; idx++) {
 877                 ifp = drvr->iflist[idx];
 878                 if (ifp && ifp->ndev == ndev)
 879                         break;
 880                 if (idx == BRCMF_MAX_IFS - 1)
 881                         return NOTIFY_DONE;
 882         }
 883
 884         /* check if arp offload is supported */
 885         ret = brcmf_fil_iovar_int_get(ifp, "arpoe", &val);
 886         if (ret)
 887                 return NOTIFY_OK;
 888
 889         /* old version only support primary index */
 890         ret = brcmf_fil_iovar_int_get(ifp, "arp_version", &val);
 891         if (ret)
 892                 val = 1;
 893         if (val == 1)
 894                 ifp = drvr->iflist[0];
 895
 896         /* retrieve the table from firmware */
 897         ret = brcmf_fil_iovar_data_get(ifp, "arp_hostip", addr_table,
 898                                        sizeof(addr_table));
 899         if (ret) {
 900                 brcmf_err("fail to get arp ip table err:%d\n", ret);
 901                 return NOTIFY_OK;
 902         }
 903
 904         for (i = 0; i < ARPOL_MAX_ENTRIES; i++)
 905                 if (ifa->ifa_address == addr_table[i])
 906                         break;
 907
 908         switch (action) {
 909         case NETDEV_UP:
 910                 if (i == ARPOL_MAX_ENTRIES) {
 911                         brcmf_dbg(TRACE, "add %pI4 to arp table\n",
 912                                   &ifa->ifa_address);
 913                         /* set it directly */
 914                         ret = brcmf_fil_iovar_data_set(ifp, "arp_hostip",
 915                                 &ifa->ifa_address, sizeof(ifa->ifa_address));
 916                         if (ret)
 917                                 brcmf_err("add arp ip err %d\n", ret);
 918                 }
 919                 break;
 920         case NETDEV_DOWN:
 921                 if (i < ARPOL_MAX_ENTRIES) {
 922                         addr_table[i] = 0;
 923                         brcmf_dbg(TRACE, "remove %pI4 from arp table\n",
 924                                   &ifa->ifa_address);
 925                         /* clear the table in firmware */
 926                         ret = brcmf_fil_iovar_data_set(ifp, "arp_hostip_clear",
 927                                                        NULL, 0);
 928                         if (ret) {
 929                                 brcmf_err("fail to clear arp ip table err:%d\n",
 930                                           ret);
 931                                 return NOTIFY_OK;
 932                         }
 933                         for (i = 0; i < ARPOL_MAX_ENTRIES; i++) {
 934                                 if (addr_table[i] == 0)
 935                                         continue;
 936                                 ret = brcmf_fil_iovar_data_set(ifp, "arp_hostip",
 937                                                                &addr_table[i],
 938                                                                sizeof(addr_table[i]));
 939                                 if (ret)
 940                                         brcmf_err("add arp ip err %d\n",
 941                                                   ret);
 942                         }
 943                 }
 944                 break;
 945         default:
 946                 break;
 947         }
 948
 949         return NOTIFY_OK;
 950 }
 951 #endif
 952
 953 #if IS_ENABLED(CONFIG_IPV6)
 954 static int brcmf_inet6addr_changed(struct notifier_block *nb,
 955                                    unsigned long action, void *data)
 956 {
 957         struct brcmf_pub *drvr = container_of(nb, struct brcmf_pub,
 958                                               inet6addr_notifier);
 959         struct inet6_ifaddr *ifa = data;
 960         struct brcmf_if *ifp;
 961         int i;
 962         struct in6_addr *table;
 963
 964         /* Only handle primary interface */
 965         ifp = drvr->iflist[0];
 966         if (!ifp)
 967                 return NOTIFY_DONE;
 968         if (ifp->ndev != ifa->idev->dev)
 969                 return NOTIFY_DONE;
 970
 971         table = ifp->ipv6_addr_tbl;
 972         for (i = 0; i < NDOL_MAX_ENTRIES; i++)
 973                 if (ipv6_addr_equal(&ifa->addr, &table[i]))
 974                         break;
 975
 976         switch (action) {
 977         case NETDEV_UP:
 978                 if (i == NDOL_MAX_ENTRIES) {
 979                         if (ifp->ipv6addr_idx < NDOL_MAX_ENTRIES) {
 980                                 table[ifp->ipv6addr_idx++] = ifa->addr;
 981                         } else {
 982                                 for (i = 0; i < NDOL_MAX_ENTRIES - 1; i++)
 983                                         table[i] = table[i + 1];
 984                                 table[NDOL_MAX_ENTRIES - 1] = ifa->addr;
 985                         }
 986                 }
 987                 break;
 988         case NETDEV_DOWN:
 989                 if (i < NDOL_MAX_ENTRIES) {
 990                         for (; i < ifp->ipv6addr_idx - 1; i++)
 991                                 table[i] = table[i + 1];
 992                         memset(&table[i], 0, sizeof(table[i]));
 993                         ifp->ipv6addr_idx--;
 994                 }
 995                 break;
 996         default:
 997                 break;
 998         }
 999
1000         schedule_work(&ifp->ndoffload_work);
1001
1002         return NOTIFY_OK;
1003 }
1004 #endif
1005
1006 static int brcmf_revinfo_read(struct seq_file *s, void *data)
1007 {
1008         struct brcmf_bus *bus_if = dev_get_drvdata(s->private);
1009         struct brcmf_rev_info *ri = &bus_if->drvr->revinfo;
1010         char drev[BRCMU_DOTREV_LEN];
1011         char brev[BRCMU_BOARDREV_LEN];
1012
1013         seq_printf(s, "vendorid: 0x%04x\n", ri->vendorid);
1014         seq_printf(s, "deviceid: 0x%04x\n", ri->deviceid);
1015         seq_printf(s, "radiorev: %s\n", brcmu_dotrev_str(ri->radiorev, drev));
1016         seq_printf(s, "chip: %s\n", ri->chipname);
1017         seq_printf(s, "chippkg: %u\n", ri->chippkg);
1018         seq_printf(s, "corerev: %u\n", ri->corerev);
1019         seq_printf(s, "boardid: 0x%04x\n", ri->boardid);
1020         seq_printf(s, "boardvendor: 0x%04x\n", ri->boardvendor);
1021         seq_printf(s, "boardrev: %s\n", brcmu_boardrev_str(ri->boardrev, brev));
1022         seq_printf(s, "driverrev: %s\n", brcmu_dotrev_str(ri->driverrev, drev));
1023         seq_printf(s, "ucoderev: %u\n", ri->ucoderev);
1024         seq_printf(s, "bus: %u\n", ri->bus);
1025         seq_printf(s, "phytype: %u\n", ri->phytype);
1026         seq_printf(s, "phyrev: %u\n", ri->phyrev);
1027         seq_printf(s, "anarev: %u\n", ri->anarev);
1028         seq_printf(s, "nvramrev: %08x\n", ri->nvramrev);
1029
1030         seq_printf(s, "clmver: %s\n", bus_if->drvr->clmver);
1031
1032         return 0;
1033 }
1034
1035 static int brcmf_bus_started(struct brcmf_pub *drvr, struct cfg80211_ops *ops)
1036 {
1037         int ret = -1;
1038         struct brcmf_bus *bus_if = drvr->bus_if;
1039         struct brcmf_if *ifp;
1040         struct brcmf_if *p2p_ifp;
1041
1042         brcmf_dbg(TRACE, "\n");
1043
1044         /* add primary networking interface */
1045         ifp = brcmf_add_if(drvr, 0, 0, false, "wlan%d", NULL);
1046         if (IS_ERR(ifp))
1047                 return PTR_ERR(ifp);
1048
1049         p2p_ifp = NULL;
1050
1051         /* signal bus ready */
1052         brcmf_bus_change_state(bus_if, BRCMF_BUS_UP);
1053
1054         /* do bus specific preinit here */
1055         ret = brcmf_bus_preinit(bus_if);
1056         if (ret < 0)
1057                 goto fail;
1058
1059         /* Bus is ready, do any initialization */
1060         ret = brcmf_c_preinit_dcmds(ifp);
1061         if (ret < 0)
1062                 goto fail;
1063
1064         brcmf_feat_attach(drvr);
1065
1066         ret = brcmf_proto_init_done(drvr);
1067         if (ret < 0)
1068                 goto fail;
1069
1070         brcmf_proto_add_if(drvr, ifp);
1071
1072         drvr->config = brcmf_cfg80211_attach(drvr, ops,
1073                                              drvr->settings->p2p_enable);
1074         if (drvr->config == NULL) {
1075                 ret = -ENOMEM;
1076                 goto fail;
1077         }
1078
1079         ret = brcmf_net_attach(ifp, false);
1080
1081         if ((!ret) && (drvr->settings->p2p_enable)) {
1082                 p2p_ifp = drvr->iflist[1];
1083                 if (p2p_ifp)
1084                         ret = brcmf_net_p2p_attach(p2p_ifp);
1085         }
1086
1087         if (ret)
1088                 goto fail;
1089
1090 #ifdef CONFIG_INET
1091         drvr->inetaddr_notifier.notifier_call = brcmf_inetaddr_changed;
1092         ret = register_inetaddr_notifier(&drvr->inetaddr_notifier);
1093         if (ret)
1094                 goto fail;
1095
1096 #if IS_ENABLED(CONFIG_IPV6)
1097         drvr->inet6addr_notifier.notifier_call = brcmf_inet6addr_changed;
1098         ret = register_inet6addr_notifier(&drvr->inet6addr_notifier);
1099         if (ret) {
1100                 unregister_inetaddr_notifier(&drvr->inetaddr_notifier);
1101                 goto fail;
1102         }
1103 #endif
1104 #endif /* CONFIG_INET */
1105
1106         /* populate debugfs */
1107         brcmf_debugfs_add_entry(drvr, "revinfo", brcmf_revinfo_read);
1108         brcmf_feat_debugfs_create(drvr);
1109         brcmf_proto_debugfs_create(drvr);
1110         brcmf_bus_debugfs_create(bus_if);
1111
1112         return 0;
1113
1114 fail:
1115         brcmf_err("failed: %d\n", ret);
1116         if (drvr->config) {
1117                 brcmf_cfg80211_detach(drvr->config);
1118                 drvr->config = NULL;
1119         }
1120         brcmf_net_detach(ifp->ndev, false);
1121         if (p2p_ifp)
1122                 brcmf_net_detach(p2p_ifp->ndev, false);
1123         drvr->iflist[0] = NULL;
1124         drvr->iflist[1] = NULL;
1125         if (drvr->settings->ignore_probe_fail)
1126                 ret = 0;
1127
1128         return ret;
1129 }
1130
1131 int brcmf_attach(struct device *dev, struct brcmf_mp_device *settings)
1132 {
1133         struct wiphy *wiphy;
1134         struct cfg80211_ops *ops;
1135         struct brcmf_pub *drvr = NULL;
1136         int ret = 0;
1137         int i;
1138
1139         brcmf_dbg(TRACE, "Enter\n");
1140
1141         ops = brcmf_cfg80211_get_ops(settings);
1142         if (!ops)
1143                 return -ENOMEM;
1144
1145         wiphy = wiphy_new(ops, sizeof(*drvr));
1146         if (!wiphy)
1147                 return -ENOMEM;
1148
1149         set_wiphy_dev(wiphy, dev);
1150         drvr = wiphy_priv(wiphy);
1151         drvr->wiphy = wiphy;
1152
1153         for (i = 0; i < ARRAY_SIZE(drvr->if2bss); i++)
1154                 drvr->if2bss[i] = BRCMF_BSSIDX_INVALID;
1155
1156         mutex_init(&drvr->proto_block);
1157
1158         /* Link to bus module */
1159         drvr->hdrlen = 0;
1160         drvr->bus_if = dev_get_drvdata(dev);
1161         drvr->bus_if->drvr = drvr;
1162         drvr->settings = settings;
1163
1164         /* Attach and link in the protocol */
1165         ret = brcmf_proto_attach(drvr);
1166         if (ret != 0) {
1167                 brcmf_err("brcmf_prot_attach failed\n");
1168                 goto fail;
1169         }
1170
1171         /* Attach to events important for core code */
1172         brcmf_fweh_register(drvr, BRCMF_E_PSM_WATCHDOG,
1173                             brcmf_psm_watchdog_notify);
1174
1175         /* attach firmware event handler */
1176         brcmf_fweh_attach(drvr);
1177
1178         ret = brcmf_bus_started(drvr, ops);
1179         if (ret != 0) {
1180                 brcmf_err("dongle is not responding: err=%d\n", ret);
1181                 goto fail;
1182         }
1183
1184         drvr->config->ops = ops;
1185         return 0;
1186
1187 fail:
1188         brcmf_detach(dev);
1189         kfree(ops);
1190
1191         return ret;
1192 }
1193
1194 void brcmf_bus_add_txhdrlen(struct device *dev, uint len)
1195 {
1196         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1197         struct brcmf_pub *drvr = bus_if->drvr;
1198
1199         if (drvr) {
1200                 drvr->hdrlen += len;
1201         }
1202 }
1203
1204 void brcmf_dev_reset(struct device *dev)
1205 {
1206         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1207         struct brcmf_pub *drvr = bus_if->drvr;
1208
1209         if (drvr == NULL)
1210                 return;
1211
1212         if (drvr->iflist[0])
1213                 brcmf_fil_cmd_int_set(drvr->iflist[0], BRCMF_C_TERMINATED, 1);
1214 }
1215
1216 void brcmf_dev_coredump(struct device *dev)
1217 {
1218         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1219
1220         if (brcmf_debug_create_memdump(bus_if, NULL, 0) < 0)
1221                 brcmf_dbg(TRACE, "failed to create coredump\n");
1222 }
1223
1224 void brcmf_detach(struct device *dev)
1225 {
1226         s32 i;
1227         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1228         struct brcmf_pub *drvr = bus_if->drvr;
1229
1230         brcmf_dbg(TRACE, "Enter\n");
1231
1232         if (drvr == NULL)
1233                 return;
1234
1235 #ifdef CONFIG_INET
1236         unregister_inetaddr_notifier(&drvr->inetaddr_notifier);
1237 #endif
1238
1239 #if IS_ENABLED(CONFIG_IPV6)
1240         unregister_inet6addr_notifier(&drvr->inet6addr_notifier);
1241 #endif
1242
1243         /* stop firmware event handling */
1244         brcmf_fweh_detach(drvr);
1245         if (drvr->config)
1246                 brcmf_p2p_detach(&drvr->config->p2p);
1247
1248         brcmf_bus_change_state(bus_if, BRCMF_BUS_DOWN);
1249
1250         brcmf_proto_detach_pre_delif(drvr);
1251
1252         if (drvr->mon_if) {
1253                 brcmf_net_detach(drvr->mon_if->ndev, false);
1254                 drvr->mon_if = NULL;
1255         }
1256
1257         /* make sure primary interface removed last */
1258         for (i = BRCMF_MAX_IFS-1; i > -1; i--)
1259                 brcmf_remove_interface(drvr->iflist[i], false);
1260
1261         brcmf_cfg80211_detach(drvr->config);
1262         drvr->config = NULL;
1263
1264         brcmf_bus_stop(drvr->bus_if);
1265
1266         brcmf_proto_detach_post_delif(drvr);
1267
1268         bus_if->drvr = NULL;
1269         wiphy_free(drvr->wiphy);
1270 }
1271
1272 s32 brcmf_iovar_data_set(struct device *dev, char *name, void *data, u32 len)
1273 {
1274         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1275         struct brcmf_if *ifp = bus_if->drvr->iflist[0];
1276
1277         return brcmf_fil_iovar_data_set(ifp, name, data, len);
1278 }
1279
1280 static int brcmf_get_pend_8021x_cnt(struct brcmf_if *ifp)
1281 {
1282         return atomic_read(&ifp->pend_8021x_cnt);
1283 }
1284
1285 int brcmf_netdev_wait_pend8021x(struct brcmf_if *ifp)
1286 {
1287         int err;
1288
1289         err = wait_event_timeout(ifp->pend_8021x_wait,
1290                                  !brcmf_get_pend_8021x_cnt(ifp),
1291                                  MAX_WAIT_FOR_8021X_TX);
1292
1293         if (!err)
1294                 brcmf_err("Timed out waiting for no pending 802.1x packets\n");
1295
1296         return !err;
1297 }
1298
1299 void brcmf_bus_change_state(struct brcmf_bus *bus, enum brcmf_bus_state state)
1300 {
1301         struct brcmf_pub *drvr = bus->drvr;
1302         struct net_device *ndev;
1303         int ifidx;
1304
1305         brcmf_dbg(TRACE, "%d -> %d\n", bus->state, state);
1306
1307         if (!drvr) {
1308                 brcmf_dbg(INFO, "ignoring transition, bus not attached yet\n");
1309                 return;
1310         }
1311
1312         bus->state = state;
1313
1314         if (state == BRCMF_BUS_UP) {
1315                 for (ifidx = 0; ifidx < BRCMF_MAX_IFS; ifidx++) {
1316                         if ((drvr->iflist[ifidx]) &&
1317                             (drvr->iflist[ifidx]->ndev)) {
1318                                 ndev = drvr->iflist[ifidx]->ndev;
1319                                 if (netif_queue_stopped(ndev))
1320                                         netif_wake_queue(ndev);
1321                         }
1322                 }
1323         }
1324 }
1325
1326 static void brcmf_driver_register(struct work_struct *work)
1327 {
1328 #ifdef CONFIG_BRCMFMAC_SDIO
1329         brcmf_sdio_register();
1330 #endif
1331 #ifdef CONFIG_BRCMFMAC_USB
1332         brcmf_usb_register();
1333 #endif
1334 #ifdef CONFIG_BRCMFMAC_PCIE
1335         brcmf_pcie_register();
1336 #endif
1337 }
1338 static DECLARE_WORK(brcmf_driver_work, brcmf_driver_register);
1339
1340 int __init brcmf_core_init(void)
1341 {
1342         if (!schedule_work(&brcmf_driver_work))
1343                 return -EBUSY;
1344
1345         return 0;
1346 }
1347
1348 void __exit brcmf_core_exit(void)
1349 {
1350         cancel_work_sync(&brcmf_driver_work);
1351
1352 #ifdef CONFIG_BRCMFMAC_SDIO
1353         brcmf_sdio_exit();
1354 #endif
1355 #ifdef CONFIG_BRCMFMAC_USB
1356         brcmf_usb_exit();
1357 #endif
1358 #ifdef CONFIG_BRCMFMAC_PCIE
1359         brcmf_pcie_exit();
1360 #endif
1361 }
1362