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