1 /* 2 * Copyright (c) 2010 Broadcom Corporation 3 * 4 * Permission to use, copy, modify, and/or distribute this software for any 5 * purpose with or without fee is hereby granted, provided that the above 6 * copyright notice and this permission notice appear in all copies. 7 * 8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 11 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION 13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN 14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 15 */ 16 17 #include <linux/kernel.h> 18 #include <linux/etherdevice.h> 19 #include <linux/module.h> 20 #include <linux/inetdevice.h> 21 #include <net/cfg80211.h> 22 #include <net/rtnetlink.h> 23 #include <net/addrconf.h> 24 #include <net/ipv6.h> 25 #include <brcmu_utils.h> 26 #include <brcmu_wifi.h> 27 28 #include "core.h" 29 #include "bus.h" 30 #include "debug.h" 31 #include "fwil_types.h" 32 #include "p2p.h" 33 #include "pno.h" 34 #include "cfg80211.h" 35 #include "fwil.h" 36 #include "feature.h" 37 #include "proto.h" 38 #include "pcie.h" 39 #include "common.h" 40 41 #define MAX_WAIT_FOR_8021X_TX msecs_to_jiffies(950) 42 43 #define BRCMF_BSSIDX_INVALID -1 44 45 char *brcmf_ifname(struct brcmf_if *ifp) 46 { 47 if (!ifp) 48 return "<if_null>"; 49 50 if (ifp->ndev) 51 return ifp->ndev->name; 52 53 return "<if_none>"; 54 } 55 56 struct brcmf_if *brcmf_get_ifp(struct brcmf_pub *drvr, int ifidx) 57 { 58 struct brcmf_if *ifp; 59 s32 bsscfgidx; 60 61 if (ifidx < 0 || ifidx >= BRCMF_MAX_IFS) { 62 brcmf_err("ifidx %d out of range\n", ifidx); 63 return NULL; 64 } 65 66 ifp = NULL; 67 bsscfgidx = drvr->if2bss[ifidx]; 68 if (bsscfgidx >= 0) 69 ifp = drvr->iflist[bsscfgidx]; 70 71 return ifp; 72 } 73 74 void brcmf_configure_arp_nd_offload(struct brcmf_if *ifp, bool enable) 75 { 76 s32 err; 77 u32 mode; 78 79 if (enable) 80 mode = BRCMF_ARP_OL_AGENT | BRCMF_ARP_OL_PEER_AUTO_REPLY; 81 else 82 mode = 0; 83 84 /* Try to set and enable ARP offload feature, this may fail, then it */ 85 /* is simply not supported and err 0 will be returned */ 86 err = brcmf_fil_iovar_int_set(ifp, "arp_ol", mode); 87 if (err) { 88 brcmf_dbg(TRACE, "failed to set ARP offload mode to 0x%x, err = %d\n", 89 mode, err); 90 } else { 91 err = brcmf_fil_iovar_int_set(ifp, "arpoe", enable); 92 if (err) { 93 brcmf_dbg(TRACE, "failed to configure (%d) ARP offload err = %d\n", 94 enable, err); 95 } else { 96 brcmf_dbg(TRACE, "successfully configured (%d) ARP offload to 0x%x\n", 97 enable, mode); 98 } 99 } 100 101 err = brcmf_fil_iovar_int_set(ifp, "ndoe", enable); 102 if (err) { 103 brcmf_dbg(TRACE, "failed to configure (%d) ND offload err = %d\n", 104 enable, err); 105 } else { 106 brcmf_dbg(TRACE, "successfully configured (%d) ND offload to 0x%x\n", 107 enable, mode); 108 } 109 } 110 111 static void _brcmf_set_multicast_list(struct work_struct *work) 112 { 113 struct brcmf_if *ifp; 114 struct net_device *ndev; 115 struct netdev_hw_addr *ha; 116 u32 cmd_value, cnt; 117 __le32 cnt_le; 118 char *buf, *bufp; 119 u32 buflen; 120 s32 err; 121 122 ifp = container_of(work, struct brcmf_if, multicast_work); 123 124 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx); 125 126 ndev = ifp->ndev; 127 128 /* Determine initial value of allmulti flag */ 129 cmd_value = (ndev->flags & IFF_ALLMULTI) ? true : false; 130 131 /* Send down the multicast list first. */ 132 cnt = netdev_mc_count(ndev); 133 buflen = sizeof(cnt) + (cnt * ETH_ALEN); 134 buf = kmalloc(buflen, GFP_ATOMIC); 135 if (!buf) 136 return; 137 bufp = buf; 138 139 cnt_le = cpu_to_le32(cnt); 140 memcpy(bufp, &cnt_le, sizeof(cnt_le)); 141 bufp += sizeof(cnt_le); 142 143 netdev_for_each_mc_addr(ha, ndev) { 144 if (!cnt) 145 break; 146 memcpy(bufp, ha->addr, ETH_ALEN); 147 bufp += ETH_ALEN; 148 cnt--; 149 } 150 151 err = brcmf_fil_iovar_data_set(ifp, "mcast_list", buf, buflen); 152 if (err < 0) { 153 brcmf_err("Setting mcast_list failed, %d\n", err); 154 cmd_value = cnt ? true : cmd_value; 155 } 156 157 kfree(buf); 158 159 /* 160 * Now send the allmulti setting. This is based on the setting in the 161 * net_device flags, but might be modified above to be turned on if we 162 * were trying to set some addresses and dongle rejected it... 163 */ 164 err = brcmf_fil_iovar_int_set(ifp, "allmulti", cmd_value); 165 if (err < 0) 166 brcmf_err("Setting allmulti failed, %d\n", err); 167 168 /*Finally, pick up the PROMISC flag */ 169 cmd_value = (ndev->flags & IFF_PROMISC) ? true : false; 170 err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_PROMISC, cmd_value); 171 if (err < 0) 172 brcmf_err("Setting BRCMF_C_SET_PROMISC failed, %d\n", 173 err); 174 brcmf_configure_arp_nd_offload(ifp, !cmd_value); 175 } 176 177 #if IS_ENABLED(CONFIG_IPV6) 178 static void _brcmf_update_ndtable(struct work_struct *work) 179 { 180 struct brcmf_if *ifp; 181 int i, ret; 182 183 ifp = container_of(work, struct brcmf_if, ndoffload_work); 184 185 /* clear the table in firmware */ 186 ret = brcmf_fil_iovar_data_set(ifp, "nd_hostip_clear", NULL, 0); 187 if (ret) { 188 brcmf_dbg(TRACE, "fail to clear nd ip table err:%d\n", ret); 189 return; 190 } 191 192 for (i = 0; i < ifp->ipv6addr_idx; i++) { 193 ret = brcmf_fil_iovar_data_set(ifp, "nd_hostip", 194 &ifp->ipv6_addr_tbl[i], 195 sizeof(struct in6_addr)); 196 if (ret) 197 brcmf_err("add nd ip err %d\n", ret); 198 } 199 } 200 #else 201 static void _brcmf_update_ndtable(struct work_struct *work) 202 { 203 } 204 #endif 205 206 static int brcmf_netdev_set_mac_address(struct net_device *ndev, void *addr) 207 { 208 struct brcmf_if *ifp = netdev_priv(ndev); 209 struct sockaddr *sa = (struct sockaddr *)addr; 210 int err; 211 212 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx); 213 214 err = brcmf_fil_iovar_data_set(ifp, "cur_etheraddr", sa->sa_data, 215 ETH_ALEN); 216 if (err < 0) { 217 brcmf_err("Setting cur_etheraddr failed, %d\n", err); 218 } else { 219 brcmf_dbg(TRACE, "updated to %pM\n", sa->sa_data); 220 memcpy(ifp->mac_addr, sa->sa_data, ETH_ALEN); 221 memcpy(ifp->ndev->dev_addr, ifp->mac_addr, ETH_ALEN); 222 } 223 return err; 224 } 225 226 static void brcmf_netdev_set_multicast_list(struct net_device *ndev) 227 { 228 struct brcmf_if *ifp = netdev_priv(ndev); 229 230 schedule_work(&ifp->multicast_work); 231 } 232 233 /** 234 * brcmf_skb_is_iapp - checks if skb is an IAPP packet 235 * 236 * @skb: skb to check 237 */ 238 static bool brcmf_skb_is_iapp(struct sk_buff *skb) 239 { 240 static const u8 iapp_l2_update_packet[6] __aligned(2) = { 241 0x00, 0x01, 0xaf, 0x81, 0x01, 0x00, 242 }; 243 unsigned char *eth_data; 244 #if !defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) 245 const u16 *a, *b; 246 #endif 247 248 if (skb->len - skb->mac_len != 6 || 249 !is_multicast_ether_addr(eth_hdr(skb)->h_dest)) 250 return false; 251 252 eth_data = skb_mac_header(skb) + ETH_HLEN; 253 #if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) 254 return !(((*(const u32 *)eth_data) ^ (*(const u32 *)iapp_l2_update_packet)) | 255 ((*(const u16 *)(eth_data + 4)) ^ (*(const u16 *)(iapp_l2_update_packet + 4)))); 256 #else 257 a = (const u16 *)eth_data; 258 b = (const u16 *)iapp_l2_update_packet; 259 260 return !((a[0] ^ b[0]) | (a[1] ^ b[1]) | (a[2] ^ b[2])); 261 #endif 262 } 263 264 static netdev_tx_t brcmf_netdev_start_xmit(struct sk_buff *skb, 265 struct net_device *ndev) 266 { 267 int ret; 268 struct brcmf_if *ifp = netdev_priv(ndev); 269 struct brcmf_pub *drvr = ifp->drvr; 270 struct ethhdr *eh; 271 int head_delta; 272 273 brcmf_dbg(DATA, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx); 274 275 /* Can the device send data? */ 276 if (drvr->bus_if->state != BRCMF_BUS_UP) { 277 brcmf_err("xmit rejected state=%d\n", drvr->bus_if->state); 278 netif_stop_queue(ndev); 279 dev_kfree_skb(skb); 280 ret = -ENODEV; 281 goto done; 282 } 283 284 /* Some recent Broadcom's firmwares disassociate STA when they receive 285 * an 802.11f ADD frame. This behavior can lead to a local DoS security 286 * issue. Attacker may trigger disassociation of any STA by sending a 287 * proper Ethernet frame to the wireless interface. 288 * 289 * Moreover this feature may break AP interfaces in some specific 290 * setups. This applies e.g. to the bridge with hairpin mode enabled and 291 * IFLA_BRPORT_MCAST_TO_UCAST set. IAPP packet generated by a firmware 292 * will get passed back to the wireless interface and cause immediate 293 * disassociation of a just-connected STA. 294 */ 295 if (!drvr->settings->iapp && brcmf_skb_is_iapp(skb)) { 296 dev_kfree_skb(skb); 297 ret = -EINVAL; 298 goto done; 299 } 300 301 /* Make sure there's enough writeable headroom */ 302 if (skb_headroom(skb) < drvr->hdrlen || skb_header_cloned(skb)) { 303 head_delta = max_t(int, drvr->hdrlen - skb_headroom(skb), 0); 304 305 brcmf_dbg(INFO, "%s: insufficient headroom (%d)\n", 306 brcmf_ifname(ifp), head_delta); 307 atomic_inc(&drvr->bus_if->stats.pktcowed); 308 ret = pskb_expand_head(skb, ALIGN(head_delta, NET_SKB_PAD), 0, 309 GFP_ATOMIC); 310 if (ret < 0) { 311 brcmf_err("%s: failed to expand headroom\n", 312 brcmf_ifname(ifp)); 313 atomic_inc(&drvr->bus_if->stats.pktcow_failed); 314 goto done; 315 } 316 } 317 318 /* validate length for ether packet */ 319 if (skb->len < sizeof(*eh)) { 320 ret = -EINVAL; 321 dev_kfree_skb(skb); 322 goto done; 323 } 324 325 eh = (struct ethhdr *)(skb->data); 326 327 if (eh->h_proto == htons(ETH_P_PAE)) 328 atomic_inc(&ifp->pend_8021x_cnt); 329 330 /* determine the priority */ 331 if ((skb->priority == 0) || (skb->priority > 7)) 332 skb->priority = cfg80211_classify8021d(skb, NULL); 333 334 ret = brcmf_proto_tx_queue_data(drvr, ifp->ifidx, skb); 335 if (ret < 0) 336 brcmf_txfinalize(ifp, skb, false); 337 338 done: 339 if (ret) { 340 ndev->stats.tx_dropped++; 341 } else { 342 ndev->stats.tx_packets++; 343 ndev->stats.tx_bytes += skb->len; 344 } 345 346 /* Return ok: we always eat the packet */ 347 return NETDEV_TX_OK; 348 } 349 350 void brcmf_txflowblock_if(struct brcmf_if *ifp, 351 enum brcmf_netif_stop_reason reason, bool state) 352 { 353 unsigned long flags; 354 355 if (!ifp || !ifp->ndev) 356 return; 357 358 brcmf_dbg(TRACE, "enter: bsscfgidx=%d stop=0x%X reason=%d state=%d\n", 359 ifp->bsscfgidx, ifp->netif_stop, reason, state); 360 361 spin_lock_irqsave(&ifp->netif_stop_lock, flags); 362 if (state) { 363 if (!ifp->netif_stop) 364 netif_stop_queue(ifp->ndev); 365 ifp->netif_stop |= reason; 366 } else { 367 ifp->netif_stop &= ~reason; 368 if (!ifp->netif_stop) 369 netif_wake_queue(ifp->ndev); 370 } 371 spin_unlock_irqrestore(&ifp->netif_stop_lock, flags); 372 } 373 374 void brcmf_netif_rx(struct brcmf_if *ifp, struct sk_buff *skb) 375 { 376 /* Most of Broadcom's firmwares send 802.11f ADD frame every time a new 377 * STA connects to the AP interface. This is an obsoleted standard most 378 * users don't use, so don't pass these frames up unless requested. 379 */ 380 if (!ifp->drvr->settings->iapp && brcmf_skb_is_iapp(skb)) { 381 brcmu_pkt_buf_free_skb(skb); 382 return; 383 } 384 385 if (skb->pkt_type == PACKET_MULTICAST) 386 ifp->ndev->stats.multicast++; 387 388 if (!(ifp->ndev->flags & IFF_UP)) { 389 brcmu_pkt_buf_free_skb(skb); 390 return; 391 } 392 393 ifp->ndev->stats.rx_bytes += skb->len; 394 ifp->ndev->stats.rx_packets++; 395 396 brcmf_dbg(DATA, "rx proto=0x%X\n", ntohs(skb->protocol)); 397 if (in_interrupt()) 398 netif_rx(skb); 399 else 400 /* If the receive is not processed inside an ISR, 401 * the softirqd must be woken explicitly to service 402 * the NET_RX_SOFTIRQ. This is handled by netif_rx_ni(). 403 */ 404 netif_rx_ni(skb); 405 } 406 407 static int brcmf_rx_hdrpull(struct brcmf_pub *drvr, struct sk_buff *skb, 408 struct brcmf_if **ifp) 409 { 410 int ret; 411 412 /* process and remove protocol-specific header */ 413 ret = brcmf_proto_hdrpull(drvr, true, skb, ifp); 414 415 if (ret || !(*ifp) || !(*ifp)->ndev) { 416 if (ret != -ENODATA && *ifp) 417 (*ifp)->ndev->stats.rx_errors++; 418 brcmu_pkt_buf_free_skb(skb); 419 return -ENODATA; 420 } 421 422 skb->protocol = eth_type_trans(skb, (*ifp)->ndev); 423 return 0; 424 } 425 426 void brcmf_rx_frame(struct device *dev, struct sk_buff *skb, bool handle_event) 427 { 428 struct brcmf_if *ifp; 429 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 430 struct brcmf_pub *drvr = bus_if->drvr; 431 432 brcmf_dbg(DATA, "Enter: %s: rxp=%p\n", dev_name(dev), skb); 433 434 if (brcmf_rx_hdrpull(drvr, skb, &ifp)) 435 return; 436 437 if (brcmf_proto_is_reorder_skb(skb)) { 438 brcmf_proto_rxreorder(ifp, skb); 439 } else { 440 /* Process special event packets */ 441 if (handle_event) 442 brcmf_fweh_process_skb(ifp->drvr, skb); 443 444 brcmf_netif_rx(ifp, skb); 445 } 446 } 447 448 void brcmf_rx_event(struct device *dev, struct sk_buff *skb) 449 { 450 struct brcmf_if *ifp; 451 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 452 struct brcmf_pub *drvr = bus_if->drvr; 453 454 brcmf_dbg(EVENT, "Enter: %s: rxp=%p\n", dev_name(dev), skb); 455 456 if (brcmf_rx_hdrpull(drvr, skb, &ifp)) 457 return; 458 459 brcmf_fweh_process_skb(ifp->drvr, skb); 460 brcmu_pkt_buf_free_skb(skb); 461 } 462 463 void brcmf_txfinalize(struct brcmf_if *ifp, struct sk_buff *txp, bool success) 464 { 465 struct ethhdr *eh; 466 u16 type; 467 468 eh = (struct ethhdr *)(txp->data); 469 type = ntohs(eh->h_proto); 470 471 if (type == ETH_P_PAE) { 472 atomic_dec(&ifp->pend_8021x_cnt); 473 if (waitqueue_active(&ifp->pend_8021x_wait)) 474 wake_up(&ifp->pend_8021x_wait); 475 } 476 477 if (!success) 478 ifp->ndev->stats.tx_errors++; 479 480 brcmu_pkt_buf_free_skb(txp); 481 } 482 483 static void brcmf_ethtool_get_drvinfo(struct net_device *ndev, 484 struct ethtool_drvinfo *info) 485 { 486 struct brcmf_if *ifp = netdev_priv(ndev); 487 struct brcmf_pub *drvr = ifp->drvr; 488 char drev[BRCMU_DOTREV_LEN] = "n/a"; 489 490 if (drvr->revinfo.result == 0) 491 brcmu_dotrev_str(drvr->revinfo.driverrev, drev); 492 strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver)); 493 strlcpy(info->version, drev, sizeof(info->version)); 494 strlcpy(info->fw_version, drvr->fwver, sizeof(info->fw_version)); 495 strlcpy(info->bus_info, dev_name(drvr->bus_if->dev), 496 sizeof(info->bus_info)); 497 } 498 499 static const struct ethtool_ops brcmf_ethtool_ops = { 500 .get_drvinfo = brcmf_ethtool_get_drvinfo, 501 }; 502 503 static int brcmf_netdev_stop(struct net_device *ndev) 504 { 505 struct brcmf_if *ifp = netdev_priv(ndev); 506 507 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx); 508 509 brcmf_cfg80211_down(ndev); 510 511 brcmf_fil_iovar_data_set(ifp, "arp_hostip_clear", NULL, 0); 512 513 brcmf_net_setcarrier(ifp, false); 514 515 return 0; 516 } 517 518 static int brcmf_netdev_open(struct net_device *ndev) 519 { 520 struct brcmf_if *ifp = netdev_priv(ndev); 521 struct brcmf_pub *drvr = ifp->drvr; 522 struct brcmf_bus *bus_if = drvr->bus_if; 523 u32 toe_ol; 524 525 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx); 526 527 /* If bus is not ready, can't continue */ 528 if (bus_if->state != BRCMF_BUS_UP) { 529 brcmf_err("failed bus is not ready\n"); 530 return -EAGAIN; 531 } 532 533 atomic_set(&ifp->pend_8021x_cnt, 0); 534 535 /* Get current TOE mode from dongle */ 536 if (brcmf_fil_iovar_int_get(ifp, "toe_ol", &toe_ol) >= 0 537 && (toe_ol & TOE_TX_CSUM_OL) != 0) 538 ndev->features |= NETIF_F_IP_CSUM; 539 else 540 ndev->features &= ~NETIF_F_IP_CSUM; 541 542 if (brcmf_cfg80211_up(ndev)) { 543 brcmf_err("failed to bring up cfg80211\n"); 544 return -EIO; 545 } 546 547 /* Clear, carrier, set when connected or AP mode. */ 548 netif_carrier_off(ndev); 549 return 0; 550 } 551 552 static const struct net_device_ops brcmf_netdev_ops_pri = { 553 .ndo_open = brcmf_netdev_open, 554 .ndo_stop = brcmf_netdev_stop, 555 .ndo_start_xmit = brcmf_netdev_start_xmit, 556 .ndo_set_mac_address = brcmf_netdev_set_mac_address, 557 .ndo_set_rx_mode = brcmf_netdev_set_multicast_list 558 }; 559 560 int brcmf_net_attach(struct brcmf_if *ifp, bool rtnl_locked) 561 { 562 struct brcmf_pub *drvr = ifp->drvr; 563 struct net_device *ndev; 564 s32 err; 565 566 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d mac=%pM\n", ifp->bsscfgidx, 567 ifp->mac_addr); 568 ndev = ifp->ndev; 569 570 /* set appropriate operations */ 571 ndev->netdev_ops = &brcmf_netdev_ops_pri; 572 573 ndev->needed_headroom += drvr->hdrlen; 574 ndev->ethtool_ops = &brcmf_ethtool_ops; 575 576 /* set the mac address & netns */ 577 memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN); 578 dev_net_set(ndev, wiphy_net(cfg_to_wiphy(drvr->config))); 579 580 INIT_WORK(&ifp->multicast_work, _brcmf_set_multicast_list); 581 INIT_WORK(&ifp->ndoffload_work, _brcmf_update_ndtable); 582 583 if (rtnl_locked) 584 err = register_netdevice(ndev); 585 else 586 err = register_netdev(ndev); 587 if (err != 0) { 588 brcmf_err("couldn't register the net device\n"); 589 goto fail; 590 } 591 592 ndev->priv_destructor = brcmf_cfg80211_free_netdev; 593 brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name); 594 return 0; 595 596 fail: 597 drvr->iflist[ifp->bsscfgidx] = NULL; 598 ndev->netdev_ops = NULL; 599 return -EBADE; 600 } 601 602 static void brcmf_net_detach(struct net_device *ndev, bool rtnl_locked) 603 { 604 if (ndev->reg_state == NETREG_REGISTERED) { 605 if (rtnl_locked) 606 unregister_netdevice(ndev); 607 else 608 unregister_netdev(ndev); 609 } else { 610 brcmf_cfg80211_free_netdev(ndev); 611 free_netdev(ndev); 612 } 613 } 614 615 void brcmf_net_setcarrier(struct brcmf_if *ifp, bool on) 616 { 617 struct net_device *ndev; 618 619 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d carrier=%d\n", ifp->bsscfgidx, 620 on); 621 622 ndev = ifp->ndev; 623 brcmf_txflowblock_if(ifp, BRCMF_NETIF_STOP_REASON_DISCONNECTED, !on); 624 if (on) { 625 if (!netif_carrier_ok(ndev)) 626 netif_carrier_on(ndev); 627 628 } else { 629 if (netif_carrier_ok(ndev)) 630 netif_carrier_off(ndev); 631 } 632 } 633 634 static int brcmf_net_p2p_open(struct net_device *ndev) 635 { 636 brcmf_dbg(TRACE, "Enter\n"); 637 638 return brcmf_cfg80211_up(ndev); 639 } 640 641 static int brcmf_net_p2p_stop(struct net_device *ndev) 642 { 643 brcmf_dbg(TRACE, "Enter\n"); 644 645 return brcmf_cfg80211_down(ndev); 646 } 647 648 static netdev_tx_t brcmf_net_p2p_start_xmit(struct sk_buff *skb, 649 struct net_device *ndev) 650 { 651 if (skb) 652 dev_kfree_skb_any(skb); 653 654 return NETDEV_TX_OK; 655 } 656 657 static const struct net_device_ops brcmf_netdev_ops_p2p = { 658 .ndo_open = brcmf_net_p2p_open, 659 .ndo_stop = brcmf_net_p2p_stop, 660 .ndo_start_xmit = brcmf_net_p2p_start_xmit 661 }; 662 663 static int brcmf_net_p2p_attach(struct brcmf_if *ifp) 664 { 665 struct net_device *ndev; 666 667 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d mac=%pM\n", ifp->bsscfgidx, 668 ifp->mac_addr); 669 ndev = ifp->ndev; 670 671 ndev->netdev_ops = &brcmf_netdev_ops_p2p; 672 673 /* set the mac address */ 674 memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN); 675 676 if (register_netdev(ndev) != 0) { 677 brcmf_err("couldn't register the p2p net device\n"); 678 goto fail; 679 } 680 681 brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name); 682 683 return 0; 684 685 fail: 686 ifp->drvr->iflist[ifp->bsscfgidx] = NULL; 687 ndev->netdev_ops = NULL; 688 return -EBADE; 689 } 690 691 struct brcmf_if *brcmf_add_if(struct brcmf_pub *drvr, s32 bsscfgidx, s32 ifidx, 692 bool is_p2pdev, const char *name, u8 *mac_addr) 693 { 694 struct brcmf_if *ifp; 695 struct net_device *ndev; 696 697 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d, ifidx=%d\n", bsscfgidx, ifidx); 698 699 ifp = drvr->iflist[bsscfgidx]; 700 /* 701 * Delete the existing interface before overwriting it 702 * in case we missed the BRCMF_E_IF_DEL event. 703 */ 704 if (ifp) { 705 if (ifidx) { 706 brcmf_err("ERROR: netdev:%s already exists\n", 707 ifp->ndev->name); 708 netif_stop_queue(ifp->ndev); 709 brcmf_net_detach(ifp->ndev, false); 710 drvr->iflist[bsscfgidx] = NULL; 711 } else { 712 brcmf_dbg(INFO, "netdev:%s ignore IF event\n", 713 ifp->ndev->name); 714 return ERR_PTR(-EINVAL); 715 } 716 } 717 718 if (!drvr->settings->p2p_enable && is_p2pdev) { 719 /* this is P2P_DEVICE interface */ 720 brcmf_dbg(INFO, "allocate non-netdev interface\n"); 721 ifp = kzalloc(sizeof(*ifp), GFP_KERNEL); 722 if (!ifp) 723 return ERR_PTR(-ENOMEM); 724 } else { 725 brcmf_dbg(INFO, "allocate netdev interface\n"); 726 /* Allocate netdev, including space for private structure */ 727 ndev = alloc_netdev(sizeof(*ifp), is_p2pdev ? "p2p%d" : name, 728 NET_NAME_UNKNOWN, ether_setup); 729 if (!ndev) 730 return ERR_PTR(-ENOMEM); 731 732 ndev->needs_free_netdev = true; 733 ifp = netdev_priv(ndev); 734 ifp->ndev = ndev; 735 /* store mapping ifidx to bsscfgidx */ 736 if (drvr->if2bss[ifidx] == BRCMF_BSSIDX_INVALID) 737 drvr->if2bss[ifidx] = bsscfgidx; 738 } 739 740 ifp->drvr = drvr; 741 drvr->iflist[bsscfgidx] = ifp; 742 ifp->ifidx = ifidx; 743 ifp->bsscfgidx = bsscfgidx; 744 745 init_waitqueue_head(&ifp->pend_8021x_wait); 746 spin_lock_init(&ifp->netif_stop_lock); 747 748 if (mac_addr != NULL) 749 memcpy(ifp->mac_addr, mac_addr, ETH_ALEN); 750 751 brcmf_dbg(TRACE, " ==== pid:%x, if:%s (%pM) created ===\n", 752 current->pid, name, ifp->mac_addr); 753 754 return ifp; 755 } 756 757 static void brcmf_del_if(struct brcmf_pub *drvr, s32 bsscfgidx, 758 bool rtnl_locked) 759 { 760 struct brcmf_if *ifp; 761 762 ifp = drvr->iflist[bsscfgidx]; 763 drvr->iflist[bsscfgidx] = NULL; 764 if (!ifp) { 765 brcmf_err("Null interface, bsscfgidx=%d\n", bsscfgidx); 766 return; 767 } 768 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d, ifidx=%d\n", bsscfgidx, 769 ifp->ifidx); 770 if (drvr->if2bss[ifp->ifidx] == bsscfgidx) 771 drvr->if2bss[ifp->ifidx] = BRCMF_BSSIDX_INVALID; 772 if (ifp->ndev) { 773 if (bsscfgidx == 0) { 774 if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) { 775 rtnl_lock(); 776 brcmf_netdev_stop(ifp->ndev); 777 rtnl_unlock(); 778 } 779 } else { 780 netif_stop_queue(ifp->ndev); 781 } 782 783 if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) { 784 cancel_work_sync(&ifp->multicast_work); 785 cancel_work_sync(&ifp->ndoffload_work); 786 } 787 brcmf_net_detach(ifp->ndev, rtnl_locked); 788 } else { 789 /* Only p2p device interfaces which get dynamically created 790 * end up here. In this case the p2p module should be informed 791 * about the removal of the interface within the firmware. If 792 * not then p2p commands towards the firmware will cause some 793 * serious troublesome side effects. The p2p module will clean 794 * up the ifp if needed. 795 */ 796 brcmf_p2p_ifp_removed(ifp, rtnl_locked); 797 kfree(ifp); 798 } 799 } 800 801 void brcmf_remove_interface(struct brcmf_if *ifp, bool rtnl_locked) 802 { 803 if (!ifp || WARN_ON(ifp->drvr->iflist[ifp->bsscfgidx] != ifp)) 804 return; 805 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d, ifidx=%d\n", ifp->bsscfgidx, 806 ifp->ifidx); 807 brcmf_proto_del_if(ifp->drvr, ifp); 808 brcmf_del_if(ifp->drvr, ifp->bsscfgidx, rtnl_locked); 809 } 810 811 static int brcmf_psm_watchdog_notify(struct brcmf_if *ifp, 812 const struct brcmf_event_msg *evtmsg, 813 void *data) 814 { 815 int err; 816 817 brcmf_dbg(TRACE, "enter: bsscfgidx=%d\n", ifp->bsscfgidx); 818 819 brcmf_err("PSM's watchdog has fired!\n"); 820 821 err = brcmf_debug_create_memdump(ifp->drvr->bus_if, data, 822 evtmsg->datalen); 823 if (err) 824 brcmf_err("Failed to get memory dump, %d\n", err); 825 826 return err; 827 } 828 829 #ifdef CONFIG_INET 830 #define ARPOL_MAX_ENTRIES 8 831 static int brcmf_inetaddr_changed(struct notifier_block *nb, 832 unsigned long action, void *data) 833 { 834 struct brcmf_pub *drvr = container_of(nb, struct brcmf_pub, 835 inetaddr_notifier); 836 struct in_ifaddr *ifa = data; 837 struct net_device *ndev = ifa->ifa_dev->dev; 838 struct brcmf_if *ifp; 839 int idx, i, ret; 840 u32 val; 841 __be32 addr_table[ARPOL_MAX_ENTRIES] = {0}; 842 843 /* Find out if the notification is meant for us */ 844 for (idx = 0; idx < BRCMF_MAX_IFS; idx++) { 845 ifp = drvr->iflist[idx]; 846 if (ifp && ifp->ndev == ndev) 847 break; 848 if (idx == BRCMF_MAX_IFS - 1) 849 return NOTIFY_DONE; 850 } 851 852 /* check if arp offload is supported */ 853 ret = brcmf_fil_iovar_int_get(ifp, "arpoe", &val); 854 if (ret) 855 return NOTIFY_OK; 856 857 /* old version only support primary index */ 858 ret = brcmf_fil_iovar_int_get(ifp, "arp_version", &val); 859 if (ret) 860 val = 1; 861 if (val == 1) 862 ifp = drvr->iflist[0]; 863 864 /* retrieve the table from firmware */ 865 ret = brcmf_fil_iovar_data_get(ifp, "arp_hostip", addr_table, 866 sizeof(addr_table)); 867 if (ret) { 868 brcmf_err("fail to get arp ip table err:%d\n", ret); 869 return NOTIFY_OK; 870 } 871 872 for (i = 0; i < ARPOL_MAX_ENTRIES; i++) 873 if (ifa->ifa_address == addr_table[i]) 874 break; 875 876 switch (action) { 877 case NETDEV_UP: 878 if (i == ARPOL_MAX_ENTRIES) { 879 brcmf_dbg(TRACE, "add %pI4 to arp table\n", 880 &ifa->ifa_address); 881 /* set it directly */ 882 ret = brcmf_fil_iovar_data_set(ifp, "arp_hostip", 883 &ifa->ifa_address, sizeof(ifa->ifa_address)); 884 if (ret) 885 brcmf_err("add arp ip err %d\n", ret); 886 } 887 break; 888 case NETDEV_DOWN: 889 if (i < ARPOL_MAX_ENTRIES) { 890 addr_table[i] = 0; 891 brcmf_dbg(TRACE, "remove %pI4 from arp table\n", 892 &ifa->ifa_address); 893 /* clear the table in firmware */ 894 ret = brcmf_fil_iovar_data_set(ifp, "arp_hostip_clear", 895 NULL, 0); 896 if (ret) { 897 brcmf_err("fail to clear arp ip table err:%d\n", 898 ret); 899 return NOTIFY_OK; 900 } 901 for (i = 0; i < ARPOL_MAX_ENTRIES; i++) { 902 if (addr_table[i] == 0) 903 continue; 904 ret = brcmf_fil_iovar_data_set(ifp, "arp_hostip", 905 &addr_table[i], 906 sizeof(addr_table[i])); 907 if (ret) 908 brcmf_err("add arp ip err %d\n", 909 ret); 910 } 911 } 912 break; 913 default: 914 break; 915 } 916 917 return NOTIFY_OK; 918 } 919 #endif 920 921 #if IS_ENABLED(CONFIG_IPV6) 922 static int brcmf_inet6addr_changed(struct notifier_block *nb, 923 unsigned long action, void *data) 924 { 925 struct brcmf_pub *drvr = container_of(nb, struct brcmf_pub, 926 inet6addr_notifier); 927 struct inet6_ifaddr *ifa = data; 928 struct brcmf_if *ifp; 929 int i; 930 struct in6_addr *table; 931 932 /* Only handle primary interface */ 933 ifp = drvr->iflist[0]; 934 if (!ifp) 935 return NOTIFY_DONE; 936 if (ifp->ndev != ifa->idev->dev) 937 return NOTIFY_DONE; 938 939 table = ifp->ipv6_addr_tbl; 940 for (i = 0; i < NDOL_MAX_ENTRIES; i++) 941 if (ipv6_addr_equal(&ifa->addr, &table[i])) 942 break; 943 944 switch (action) { 945 case NETDEV_UP: 946 if (i == NDOL_MAX_ENTRIES) { 947 if (ifp->ipv6addr_idx < NDOL_MAX_ENTRIES) { 948 table[ifp->ipv6addr_idx++] = ifa->addr; 949 } else { 950 for (i = 0; i < NDOL_MAX_ENTRIES - 1; i++) 951 table[i] = table[i + 1]; 952 table[NDOL_MAX_ENTRIES - 1] = ifa->addr; 953 } 954 } 955 break; 956 case NETDEV_DOWN: 957 if (i < NDOL_MAX_ENTRIES) { 958 for (; i < ifp->ipv6addr_idx - 1; i++) 959 table[i] = table[i + 1]; 960 memset(&table[i], 0, sizeof(table[i])); 961 ifp->ipv6addr_idx--; 962 } 963 break; 964 default: 965 break; 966 } 967 968 schedule_work(&ifp->ndoffload_work); 969 970 return NOTIFY_OK; 971 } 972 #endif 973 974 static int brcmf_revinfo_read(struct seq_file *s, void *data) 975 { 976 struct brcmf_bus *bus_if = dev_get_drvdata(s->private); 977 struct brcmf_rev_info *ri = &bus_if->drvr->revinfo; 978 char drev[BRCMU_DOTREV_LEN]; 979 char brev[BRCMU_BOARDREV_LEN]; 980 981 seq_printf(s, "vendorid: 0x%04x\n", ri->vendorid); 982 seq_printf(s, "deviceid: 0x%04x\n", ri->deviceid); 983 seq_printf(s, "radiorev: %s\n", brcmu_dotrev_str(ri->radiorev, drev)); 984 seq_printf(s, "chip: %s\n", ri->chipname); 985 seq_printf(s, "chippkg: %u\n", ri->chippkg); 986 seq_printf(s, "corerev: %u\n", ri->corerev); 987 seq_printf(s, "boardid: 0x%04x\n", ri->boardid); 988 seq_printf(s, "boardvendor: 0x%04x\n", ri->boardvendor); 989 seq_printf(s, "boardrev: %s\n", brcmu_boardrev_str(ri->boardrev, brev)); 990 seq_printf(s, "driverrev: %s\n", brcmu_dotrev_str(ri->driverrev, drev)); 991 seq_printf(s, "ucoderev: %u\n", ri->ucoderev); 992 seq_printf(s, "bus: %u\n", ri->bus); 993 seq_printf(s, "phytype: %u\n", ri->phytype); 994 seq_printf(s, "phyrev: %u\n", ri->phyrev); 995 seq_printf(s, "anarev: %u\n", ri->anarev); 996 seq_printf(s, "nvramrev: %08x\n", ri->nvramrev); 997 998 seq_printf(s, "clmver: %s\n", bus_if->drvr->clmver); 999 1000 return 0; 1001 } 1002 1003 static int brcmf_bus_started(struct brcmf_pub *drvr, struct cfg80211_ops *ops) 1004 { 1005 int ret = -1; 1006 struct brcmf_bus *bus_if = drvr->bus_if; 1007 struct brcmf_if *ifp; 1008 struct brcmf_if *p2p_ifp; 1009 1010 brcmf_dbg(TRACE, "\n"); 1011 1012 /* add primary networking interface */ 1013 ifp = brcmf_add_if(drvr, 0, 0, false, "wlan%d", NULL); 1014 if (IS_ERR(ifp)) 1015 return PTR_ERR(ifp); 1016 1017 p2p_ifp = NULL; 1018 1019 /* signal bus ready */ 1020 brcmf_bus_change_state(bus_if, BRCMF_BUS_UP); 1021 1022 /* do bus specific preinit here */ 1023 ret = brcmf_bus_preinit(bus_if); 1024 if (ret < 0) 1025 goto fail; 1026 1027 /* Bus is ready, do any initialization */ 1028 ret = brcmf_c_preinit_dcmds(ifp); 1029 if (ret < 0) 1030 goto fail; 1031 1032 brcmf_feat_attach(drvr); 1033 1034 ret = brcmf_proto_init_done(drvr); 1035 if (ret < 0) 1036 goto fail; 1037 1038 brcmf_proto_add_if(drvr, ifp); 1039 1040 drvr->config = brcmf_cfg80211_attach(drvr, ops, 1041 drvr->settings->p2p_enable); 1042 if (drvr->config == NULL) { 1043 ret = -ENOMEM; 1044 goto fail; 1045 } 1046 1047 ret = brcmf_net_attach(ifp, false); 1048 1049 if ((!ret) && (drvr->settings->p2p_enable)) { 1050 p2p_ifp = drvr->iflist[1]; 1051 if (p2p_ifp) 1052 ret = brcmf_net_p2p_attach(p2p_ifp); 1053 } 1054 1055 if (ret) 1056 goto fail; 1057 1058 #ifdef CONFIG_INET 1059 drvr->inetaddr_notifier.notifier_call = brcmf_inetaddr_changed; 1060 ret = register_inetaddr_notifier(&drvr->inetaddr_notifier); 1061 if (ret) 1062 goto fail; 1063 1064 #if IS_ENABLED(CONFIG_IPV6) 1065 drvr->inet6addr_notifier.notifier_call = brcmf_inet6addr_changed; 1066 ret = register_inet6addr_notifier(&drvr->inet6addr_notifier); 1067 if (ret) { 1068 unregister_inetaddr_notifier(&drvr->inetaddr_notifier); 1069 goto fail; 1070 } 1071 #endif 1072 #endif /* CONFIG_INET */ 1073 1074 /* populate debugfs */ 1075 brcmf_debugfs_add_entry(drvr, "revinfo", brcmf_revinfo_read); 1076 brcmf_feat_debugfs_create(drvr); 1077 brcmf_proto_debugfs_create(drvr); 1078 1079 return 0; 1080 1081 fail: 1082 brcmf_err("failed: %d\n", ret); 1083 if (drvr->config) { 1084 brcmf_cfg80211_detach(drvr->config); 1085 drvr->config = NULL; 1086 } 1087 brcmf_net_detach(ifp->ndev, false); 1088 if (p2p_ifp) 1089 brcmf_net_detach(p2p_ifp->ndev, false); 1090 drvr->iflist[0] = NULL; 1091 drvr->iflist[1] = NULL; 1092 if (drvr->settings->ignore_probe_fail) 1093 ret = 0; 1094 1095 return ret; 1096 } 1097 1098 int brcmf_attach(struct device *dev, struct brcmf_mp_device *settings) 1099 { 1100 struct wiphy *wiphy; 1101 struct cfg80211_ops *ops; 1102 struct brcmf_pub *drvr = NULL; 1103 int ret = 0; 1104 int i; 1105 1106 brcmf_dbg(TRACE, "Enter\n"); 1107 1108 ops = brcmf_cfg80211_get_ops(); 1109 if (!ops) 1110 return -ENOMEM; 1111 1112 wiphy = wiphy_new(ops, sizeof(*drvr)); 1113 if (!wiphy) 1114 return -ENOMEM; 1115 1116 set_wiphy_dev(wiphy, dev); 1117 drvr = wiphy_priv(wiphy); 1118 drvr->wiphy = wiphy; 1119 1120 for (i = 0; i < ARRAY_SIZE(drvr->if2bss); i++) 1121 drvr->if2bss[i] = BRCMF_BSSIDX_INVALID; 1122 1123 mutex_init(&drvr->proto_block); 1124 1125 /* Link to bus module */ 1126 drvr->hdrlen = 0; 1127 drvr->bus_if = dev_get_drvdata(dev); 1128 drvr->bus_if->drvr = drvr; 1129 drvr->settings = settings; 1130 1131 /* Attach and link in the protocol */ 1132 ret = brcmf_proto_attach(drvr); 1133 if (ret != 0) { 1134 brcmf_err("brcmf_prot_attach failed\n"); 1135 goto fail; 1136 } 1137 1138 /* Attach to events important for core code */ 1139 brcmf_fweh_register(drvr, BRCMF_E_PSM_WATCHDOG, 1140 brcmf_psm_watchdog_notify); 1141 1142 /* attach firmware event handler */ 1143 brcmf_fweh_attach(drvr); 1144 1145 ret = brcmf_bus_started(drvr, ops); 1146 if (ret != 0) { 1147 brcmf_err("dongle is not responding: err=%d\n", ret); 1148 goto fail; 1149 } 1150 1151 drvr->config->ops = ops; 1152 return 0; 1153 1154 fail: 1155 brcmf_detach(dev); 1156 kfree(ops); 1157 1158 return ret; 1159 } 1160 1161 void brcmf_bus_add_txhdrlen(struct device *dev, uint len) 1162 { 1163 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1164 struct brcmf_pub *drvr = bus_if->drvr; 1165 1166 if (drvr) { 1167 drvr->hdrlen += len; 1168 } 1169 } 1170 1171 void brcmf_dev_reset(struct device *dev) 1172 { 1173 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1174 struct brcmf_pub *drvr = bus_if->drvr; 1175 1176 if (drvr == NULL) 1177 return; 1178 1179 if (drvr->iflist[0]) 1180 brcmf_fil_cmd_int_set(drvr->iflist[0], BRCMF_C_TERMINATED, 1); 1181 } 1182 1183 void brcmf_dev_coredump(struct device *dev) 1184 { 1185 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1186 1187 if (brcmf_debug_create_memdump(bus_if, NULL, 0) < 0) 1188 brcmf_dbg(TRACE, "failed to create coredump\n"); 1189 } 1190 1191 void brcmf_detach(struct device *dev) 1192 { 1193 s32 i; 1194 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1195 struct brcmf_pub *drvr = bus_if->drvr; 1196 1197 brcmf_dbg(TRACE, "Enter\n"); 1198 1199 if (drvr == NULL) 1200 return; 1201 1202 #ifdef CONFIG_INET 1203 unregister_inetaddr_notifier(&drvr->inetaddr_notifier); 1204 #endif 1205 1206 #if IS_ENABLED(CONFIG_IPV6) 1207 unregister_inet6addr_notifier(&drvr->inet6addr_notifier); 1208 #endif 1209 1210 /* stop firmware event handling */ 1211 brcmf_fweh_detach(drvr); 1212 if (drvr->config) 1213 brcmf_p2p_detach(&drvr->config->p2p); 1214 1215 brcmf_bus_change_state(bus_if, BRCMF_BUS_DOWN); 1216 1217 /* make sure primary interface removed last */ 1218 for (i = BRCMF_MAX_IFS-1; i > -1; i--) 1219 brcmf_remove_interface(drvr->iflist[i], false); 1220 1221 brcmf_cfg80211_detach(drvr->config); 1222 drvr->config = NULL; 1223 1224 brcmf_bus_stop(drvr->bus_if); 1225 1226 brcmf_proto_detach(drvr); 1227 1228 bus_if->drvr = NULL; 1229 wiphy_free(drvr->wiphy); 1230 } 1231 1232 s32 brcmf_iovar_data_set(struct device *dev, char *name, void *data, u32 len) 1233 { 1234 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1235 struct brcmf_if *ifp = bus_if->drvr->iflist[0]; 1236 1237 return brcmf_fil_iovar_data_set(ifp, name, data, len); 1238 } 1239 1240 static int brcmf_get_pend_8021x_cnt(struct brcmf_if *ifp) 1241 { 1242 return atomic_read(&ifp->pend_8021x_cnt); 1243 } 1244 1245 int brcmf_netdev_wait_pend8021x(struct brcmf_if *ifp) 1246 { 1247 int err; 1248 1249 err = wait_event_timeout(ifp->pend_8021x_wait, 1250 !brcmf_get_pend_8021x_cnt(ifp), 1251 MAX_WAIT_FOR_8021X_TX); 1252 1253 if (!err) 1254 brcmf_err("Timed out waiting for no pending 802.1x packets\n"); 1255 1256 return !err; 1257 } 1258 1259 void brcmf_bus_change_state(struct brcmf_bus *bus, enum brcmf_bus_state state) 1260 { 1261 struct brcmf_pub *drvr = bus->drvr; 1262 struct net_device *ndev; 1263 int ifidx; 1264 1265 brcmf_dbg(TRACE, "%d -> %d\n", bus->state, state); 1266 1267 if (!drvr) { 1268 brcmf_dbg(INFO, "ignoring transition, bus not attached yet\n"); 1269 return; 1270 } 1271 1272 bus->state = state; 1273 1274 if (state == BRCMF_BUS_UP) { 1275 for (ifidx = 0; ifidx < BRCMF_MAX_IFS; ifidx++) { 1276 if ((drvr->iflist[ifidx]) && 1277 (drvr->iflist[ifidx]->ndev)) { 1278 ndev = drvr->iflist[ifidx]->ndev; 1279 if (netif_queue_stopped(ndev)) 1280 netif_wake_queue(ndev); 1281 } 1282 } 1283 } 1284 } 1285 1286 static void brcmf_driver_register(struct work_struct *work) 1287 { 1288 #ifdef CONFIG_BRCMFMAC_SDIO 1289 brcmf_sdio_register(); 1290 #endif 1291 #ifdef CONFIG_BRCMFMAC_USB 1292 brcmf_usb_register(); 1293 #endif 1294 #ifdef CONFIG_BRCMFMAC_PCIE 1295 brcmf_pcie_register(); 1296 #endif 1297 } 1298 static DECLARE_WORK(brcmf_driver_work, brcmf_driver_register); 1299 1300 int __init brcmf_core_init(void) 1301 { 1302 if (!schedule_work(&brcmf_driver_work)) 1303 return -EBUSY; 1304 1305 return 0; 1306 } 1307 1308 void __exit brcmf_core_exit(void) 1309 { 1310 cancel_work_sync(&brcmf_driver_work); 1311 1312 #ifdef CONFIG_BRCMFMAC_SDIO 1313 brcmf_sdio_exit(); 1314 #endif 1315 #ifdef CONFIG_BRCMFMAC_USB 1316 brcmf_usb_exit(); 1317 #endif 1318 #ifdef CONFIG_BRCMFMAC_PCIE 1319 brcmf_pcie_exit(); 1320 #endif 1321 } 1322 1323