1 /* 2 * Copyright (c) 2010 Broadcom Corporation 3 * 4 * Permission to use, copy, modify, and/or distribute this software for any 5 * purpose with or without fee is hereby granted, provided that the above 6 * copyright notice and this permission notice appear in all copies. 7 * 8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 11 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION 13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN 14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 15 */ 16 17 #include <linux/kernel.h> 18 #include <linux/etherdevice.h> 19 #include <linux/module.h> 20 #include <linux/inetdevice.h> 21 #include <net/cfg80211.h> 22 #include <net/rtnetlink.h> 23 #include <net/addrconf.h> 24 #include <net/ipv6.h> 25 #include <brcmu_utils.h> 26 #include <brcmu_wifi.h> 27 28 #include "core.h" 29 #include "bus.h" 30 #include "debug.h" 31 #include "fwil_types.h" 32 #include "p2p.h" 33 #include "cfg80211.h" 34 #include "fwil.h" 35 #include "fwsignal.h" 36 #include "feature.h" 37 #include "proto.h" 38 #include "pcie.h" 39 #include "common.h" 40 41 #define MAX_WAIT_FOR_8021X_TX msecs_to_jiffies(950) 42 43 #define BRCMF_BSSIDX_INVALID -1 44 45 char *brcmf_ifname(struct brcmf_if *ifp) 46 { 47 if (!ifp) 48 return "<if_null>"; 49 50 if (ifp->ndev) 51 return ifp->ndev->name; 52 53 return "<if_none>"; 54 } 55 56 struct brcmf_if *brcmf_get_ifp(struct brcmf_pub *drvr, int ifidx) 57 { 58 struct brcmf_if *ifp; 59 s32 bsscfgidx; 60 61 if (ifidx < 0 || ifidx >= BRCMF_MAX_IFS) { 62 brcmf_err("ifidx %d out of range\n", ifidx); 63 return NULL; 64 } 65 66 ifp = NULL; 67 bsscfgidx = drvr->if2bss[ifidx]; 68 if (bsscfgidx >= 0) 69 ifp = drvr->iflist[bsscfgidx]; 70 71 return ifp; 72 } 73 74 static void _brcmf_set_multicast_list(struct work_struct *work) 75 { 76 struct brcmf_if *ifp; 77 struct net_device *ndev; 78 struct netdev_hw_addr *ha; 79 u32 cmd_value, cnt; 80 __le32 cnt_le; 81 char *buf, *bufp; 82 u32 buflen; 83 s32 err; 84 85 ifp = container_of(work, struct brcmf_if, multicast_work); 86 87 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx); 88 89 ndev = ifp->ndev; 90 91 /* Determine initial value of allmulti flag */ 92 cmd_value = (ndev->flags & IFF_ALLMULTI) ? true : false; 93 94 /* Send down the multicast list first. */ 95 cnt = netdev_mc_count(ndev); 96 buflen = sizeof(cnt) + (cnt * ETH_ALEN); 97 buf = kmalloc(buflen, GFP_ATOMIC); 98 if (!buf) 99 return; 100 bufp = buf; 101 102 cnt_le = cpu_to_le32(cnt); 103 memcpy(bufp, &cnt_le, sizeof(cnt_le)); 104 bufp += sizeof(cnt_le); 105 106 netdev_for_each_mc_addr(ha, ndev) { 107 if (!cnt) 108 break; 109 memcpy(bufp, ha->addr, ETH_ALEN); 110 bufp += ETH_ALEN; 111 cnt--; 112 } 113 114 err = brcmf_fil_iovar_data_set(ifp, "mcast_list", buf, buflen); 115 if (err < 0) { 116 brcmf_err("Setting mcast_list failed, %d\n", err); 117 cmd_value = cnt ? true : cmd_value; 118 } 119 120 kfree(buf); 121 122 /* 123 * Now send the allmulti setting. This is based on the setting in the 124 * net_device flags, but might be modified above to be turned on if we 125 * were trying to set some addresses and dongle rejected it... 126 */ 127 err = brcmf_fil_iovar_int_set(ifp, "allmulti", cmd_value); 128 if (err < 0) 129 brcmf_err("Setting allmulti failed, %d\n", err); 130 131 /*Finally, pick up the PROMISC flag */ 132 cmd_value = (ndev->flags & IFF_PROMISC) ? true : false; 133 err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_PROMISC, cmd_value); 134 if (err < 0) 135 brcmf_err("Setting BRCMF_C_SET_PROMISC failed, %d\n", 136 err); 137 } 138 139 static void 140 _brcmf_set_mac_address(struct work_struct *work) 141 { 142 struct brcmf_if *ifp; 143 s32 err; 144 145 ifp = container_of(work, struct brcmf_if, setmacaddr_work); 146 147 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx); 148 149 err = brcmf_fil_iovar_data_set(ifp, "cur_etheraddr", ifp->mac_addr, 150 ETH_ALEN); 151 if (err < 0) { 152 brcmf_err("Setting cur_etheraddr failed, %d\n", err); 153 } else { 154 brcmf_dbg(TRACE, "MAC address updated to %pM\n", 155 ifp->mac_addr); 156 memcpy(ifp->ndev->dev_addr, ifp->mac_addr, ETH_ALEN); 157 } 158 } 159 160 #if IS_ENABLED(CONFIG_IPV6) 161 static void _brcmf_update_ndtable(struct work_struct *work) 162 { 163 struct brcmf_if *ifp; 164 int i, ret; 165 166 ifp = container_of(work, struct brcmf_if, ndoffload_work); 167 168 /* clear the table in firmware */ 169 ret = brcmf_fil_iovar_data_set(ifp, "nd_hostip_clear", NULL, 0); 170 if (ret) { 171 brcmf_dbg(TRACE, "fail to clear nd ip table err:%d\n", ret); 172 return; 173 } 174 175 for (i = 0; i < ifp->ipv6addr_idx; i++) { 176 ret = brcmf_fil_iovar_data_set(ifp, "nd_hostip", 177 &ifp->ipv6_addr_tbl[i], 178 sizeof(struct in6_addr)); 179 if (ret) 180 brcmf_err("add nd ip err %d\n", ret); 181 } 182 } 183 #else 184 static void _brcmf_update_ndtable(struct work_struct *work) 185 { 186 } 187 #endif 188 189 static int brcmf_netdev_set_mac_address(struct net_device *ndev, void *addr) 190 { 191 struct brcmf_if *ifp = netdev_priv(ndev); 192 struct sockaddr *sa = (struct sockaddr *)addr; 193 194 memcpy(&ifp->mac_addr, sa->sa_data, ETH_ALEN); 195 schedule_work(&ifp->setmacaddr_work); 196 return 0; 197 } 198 199 static void brcmf_netdev_set_multicast_list(struct net_device *ndev) 200 { 201 struct brcmf_if *ifp = netdev_priv(ndev); 202 203 schedule_work(&ifp->multicast_work); 204 } 205 206 static netdev_tx_t brcmf_netdev_start_xmit(struct sk_buff *skb, 207 struct net_device *ndev) 208 { 209 int ret; 210 struct brcmf_if *ifp = netdev_priv(ndev); 211 struct brcmf_pub *drvr = ifp->drvr; 212 struct ethhdr *eh = (struct ethhdr *)(skb->data); 213 214 brcmf_dbg(DATA, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx); 215 216 /* Can the device send data? */ 217 if (drvr->bus_if->state != BRCMF_BUS_UP) { 218 brcmf_err("xmit rejected state=%d\n", drvr->bus_if->state); 219 netif_stop_queue(ndev); 220 dev_kfree_skb(skb); 221 ret = -ENODEV; 222 goto done; 223 } 224 225 /* Make sure there's enough room for any header */ 226 if (skb_headroom(skb) < drvr->hdrlen) { 227 struct sk_buff *skb2; 228 229 brcmf_dbg(INFO, "%s: insufficient headroom\n", 230 brcmf_ifname(ifp)); 231 drvr->bus_if->tx_realloc++; 232 skb2 = skb_realloc_headroom(skb, drvr->hdrlen); 233 dev_kfree_skb(skb); 234 skb = skb2; 235 if (skb == NULL) { 236 brcmf_err("%s: skb_realloc_headroom failed\n", 237 brcmf_ifname(ifp)); 238 ret = -ENOMEM; 239 goto done; 240 } 241 } 242 243 /* validate length for ether packet */ 244 if (skb->len < sizeof(*eh)) { 245 ret = -EINVAL; 246 dev_kfree_skb(skb); 247 goto done; 248 } 249 250 if (eh->h_proto == htons(ETH_P_PAE)) 251 atomic_inc(&ifp->pend_8021x_cnt); 252 253 ret = brcmf_fws_process_skb(ifp, skb); 254 255 done: 256 if (ret) { 257 ifp->stats.tx_dropped++; 258 } else { 259 ifp->stats.tx_packets++; 260 ifp->stats.tx_bytes += skb->len; 261 } 262 263 /* Return ok: we always eat the packet */ 264 return NETDEV_TX_OK; 265 } 266 267 void brcmf_txflowblock_if(struct brcmf_if *ifp, 268 enum brcmf_netif_stop_reason reason, bool state) 269 { 270 unsigned long flags; 271 272 if (!ifp || !ifp->ndev) 273 return; 274 275 brcmf_dbg(TRACE, "enter: bsscfgidx=%d stop=0x%X reason=%d state=%d\n", 276 ifp->bsscfgidx, ifp->netif_stop, reason, state); 277 278 spin_lock_irqsave(&ifp->netif_stop_lock, flags); 279 if (state) { 280 if (!ifp->netif_stop) 281 netif_stop_queue(ifp->ndev); 282 ifp->netif_stop |= reason; 283 } else { 284 ifp->netif_stop &= ~reason; 285 if (!ifp->netif_stop) 286 netif_wake_queue(ifp->ndev); 287 } 288 spin_unlock_irqrestore(&ifp->netif_stop_lock, flags); 289 } 290 291 void brcmf_txflowblock(struct device *dev, bool state) 292 { 293 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 294 struct brcmf_pub *drvr = bus_if->drvr; 295 296 brcmf_dbg(TRACE, "Enter\n"); 297 298 brcmf_fws_bus_blocked(drvr, state); 299 } 300 301 void brcmf_netif_rx(struct brcmf_if *ifp, struct sk_buff *skb) 302 { 303 if (skb->pkt_type == PACKET_MULTICAST) 304 ifp->stats.multicast++; 305 306 if (!(ifp->ndev->flags & IFF_UP)) { 307 brcmu_pkt_buf_free_skb(skb); 308 return; 309 } 310 311 ifp->stats.rx_bytes += skb->len; 312 ifp->stats.rx_packets++; 313 314 brcmf_dbg(DATA, "rx proto=0x%X\n", ntohs(skb->protocol)); 315 if (in_interrupt()) 316 netif_rx(skb); 317 else 318 /* If the receive is not processed inside an ISR, 319 * the softirqd must be woken explicitly to service 320 * the NET_RX_SOFTIRQ. This is handled by netif_rx_ni(). 321 */ 322 netif_rx_ni(skb); 323 } 324 325 static int brcmf_rx_hdrpull(struct brcmf_pub *drvr, struct sk_buff *skb, 326 struct brcmf_if **ifp) 327 { 328 int ret; 329 330 /* process and remove protocol-specific header */ 331 ret = brcmf_proto_hdrpull(drvr, true, skb, ifp); 332 333 if (ret || !(*ifp) || !(*ifp)->ndev) { 334 if (ret != -ENODATA && *ifp) 335 (*ifp)->stats.rx_errors++; 336 brcmu_pkt_buf_free_skb(skb); 337 return -ENODATA; 338 } 339 340 skb->protocol = eth_type_trans(skb, (*ifp)->ndev); 341 return 0; 342 } 343 344 void brcmf_rx_frame(struct device *dev, struct sk_buff *skb, bool handle_event) 345 { 346 struct brcmf_if *ifp; 347 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 348 struct brcmf_pub *drvr = bus_if->drvr; 349 350 brcmf_dbg(DATA, "Enter: %s: rxp=%p\n", dev_name(dev), skb); 351 352 if (brcmf_rx_hdrpull(drvr, skb, &ifp)) 353 return; 354 355 if (brcmf_proto_is_reorder_skb(skb)) { 356 brcmf_proto_rxreorder(ifp, skb); 357 } else { 358 /* Process special event packets */ 359 if (handle_event) 360 brcmf_fweh_process_skb(ifp->drvr, skb); 361 362 brcmf_netif_rx(ifp, skb); 363 } 364 } 365 366 void brcmf_rx_event(struct device *dev, struct sk_buff *skb) 367 { 368 struct brcmf_if *ifp; 369 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 370 struct brcmf_pub *drvr = bus_if->drvr; 371 372 brcmf_dbg(EVENT, "Enter: %s: rxp=%p\n", dev_name(dev), skb); 373 374 if (brcmf_rx_hdrpull(drvr, skb, &ifp)) 375 return; 376 377 brcmf_fweh_process_skb(ifp->drvr, skb); 378 brcmu_pkt_buf_free_skb(skb); 379 } 380 381 void brcmf_txfinalize(struct brcmf_if *ifp, struct sk_buff *txp, bool success) 382 { 383 struct ethhdr *eh; 384 u16 type; 385 386 eh = (struct ethhdr *)(txp->data); 387 type = ntohs(eh->h_proto); 388 389 if (type == ETH_P_PAE) { 390 atomic_dec(&ifp->pend_8021x_cnt); 391 if (waitqueue_active(&ifp->pend_8021x_wait)) 392 wake_up(&ifp->pend_8021x_wait); 393 } 394 395 if (!success) 396 ifp->stats.tx_errors++; 397 398 brcmu_pkt_buf_free_skb(txp); 399 } 400 401 void brcmf_txcomplete(struct device *dev, struct sk_buff *txp, bool success) 402 { 403 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 404 struct brcmf_pub *drvr = bus_if->drvr; 405 struct brcmf_if *ifp; 406 407 /* await txstatus signal for firmware if active */ 408 if (brcmf_fws_fc_active(drvr->fws)) { 409 if (!success) 410 brcmf_fws_bustxfail(drvr->fws, txp); 411 } else { 412 if (brcmf_proto_hdrpull(drvr, false, txp, &ifp)) 413 brcmu_pkt_buf_free_skb(txp); 414 else 415 brcmf_txfinalize(ifp, txp, success); 416 } 417 } 418 419 static struct net_device_stats *brcmf_netdev_get_stats(struct net_device *ndev) 420 { 421 struct brcmf_if *ifp = netdev_priv(ndev); 422 423 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx); 424 425 return &ifp->stats; 426 } 427 428 static void brcmf_ethtool_get_drvinfo(struct net_device *ndev, 429 struct ethtool_drvinfo *info) 430 { 431 struct brcmf_if *ifp = netdev_priv(ndev); 432 struct brcmf_pub *drvr = ifp->drvr; 433 char drev[BRCMU_DOTREV_LEN] = "n/a"; 434 435 if (drvr->revinfo.result == 0) 436 brcmu_dotrev_str(drvr->revinfo.driverrev, drev); 437 strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver)); 438 strlcpy(info->version, drev, sizeof(info->version)); 439 strlcpy(info->fw_version, drvr->fwver, sizeof(info->fw_version)); 440 strlcpy(info->bus_info, dev_name(drvr->bus_if->dev), 441 sizeof(info->bus_info)); 442 } 443 444 static const struct ethtool_ops brcmf_ethtool_ops = { 445 .get_drvinfo = brcmf_ethtool_get_drvinfo, 446 }; 447 448 static int brcmf_netdev_stop(struct net_device *ndev) 449 { 450 struct brcmf_if *ifp = netdev_priv(ndev); 451 452 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx); 453 454 brcmf_cfg80211_down(ndev); 455 456 brcmf_fil_iovar_data_set(ifp, "arp_hostip_clear", NULL, 0); 457 458 brcmf_net_setcarrier(ifp, false); 459 460 return 0; 461 } 462 463 static int brcmf_netdev_open(struct net_device *ndev) 464 { 465 struct brcmf_if *ifp = netdev_priv(ndev); 466 struct brcmf_pub *drvr = ifp->drvr; 467 struct brcmf_bus *bus_if = drvr->bus_if; 468 u32 toe_ol; 469 470 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx); 471 472 /* If bus is not ready, can't continue */ 473 if (bus_if->state != BRCMF_BUS_UP) { 474 brcmf_err("failed bus is not ready\n"); 475 return -EAGAIN; 476 } 477 478 atomic_set(&ifp->pend_8021x_cnt, 0); 479 480 /* Get current TOE mode from dongle */ 481 if (brcmf_fil_iovar_int_get(ifp, "toe_ol", &toe_ol) >= 0 482 && (toe_ol & TOE_TX_CSUM_OL) != 0) 483 ndev->features |= NETIF_F_IP_CSUM; 484 else 485 ndev->features &= ~NETIF_F_IP_CSUM; 486 487 if (brcmf_cfg80211_up(ndev)) { 488 brcmf_err("failed to bring up cfg80211\n"); 489 return -EIO; 490 } 491 492 /* Clear, carrier, set when connected or AP mode. */ 493 netif_carrier_off(ndev); 494 return 0; 495 } 496 497 static const struct net_device_ops brcmf_netdev_ops_pri = { 498 .ndo_open = brcmf_netdev_open, 499 .ndo_stop = brcmf_netdev_stop, 500 .ndo_get_stats = brcmf_netdev_get_stats, 501 .ndo_start_xmit = brcmf_netdev_start_xmit, 502 .ndo_set_mac_address = brcmf_netdev_set_mac_address, 503 .ndo_set_rx_mode = brcmf_netdev_set_multicast_list 504 }; 505 506 int brcmf_net_attach(struct brcmf_if *ifp, bool rtnl_locked) 507 { 508 struct brcmf_pub *drvr = ifp->drvr; 509 struct net_device *ndev; 510 s32 err; 511 512 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d mac=%pM\n", ifp->bsscfgidx, 513 ifp->mac_addr); 514 ndev = ifp->ndev; 515 516 /* set appropriate operations */ 517 ndev->netdev_ops = &brcmf_netdev_ops_pri; 518 519 ndev->needed_headroom += drvr->hdrlen; 520 ndev->ethtool_ops = &brcmf_ethtool_ops; 521 522 drvr->rxsz = ndev->mtu + ndev->hard_header_len + 523 drvr->hdrlen; 524 525 /* set the mac address */ 526 memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN); 527 528 INIT_WORK(&ifp->setmacaddr_work, _brcmf_set_mac_address); 529 INIT_WORK(&ifp->multicast_work, _brcmf_set_multicast_list); 530 INIT_WORK(&ifp->ndoffload_work, _brcmf_update_ndtable); 531 532 if (rtnl_locked) 533 err = register_netdevice(ndev); 534 else 535 err = register_netdev(ndev); 536 if (err != 0) { 537 brcmf_err("couldn't register the net device\n"); 538 goto fail; 539 } 540 541 brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name); 542 return 0; 543 544 fail: 545 drvr->iflist[ifp->bsscfgidx] = NULL; 546 ndev->netdev_ops = NULL; 547 free_netdev(ndev); 548 return -EBADE; 549 } 550 551 static void brcmf_net_detach(struct net_device *ndev, bool rtnl_locked) 552 { 553 if (ndev->reg_state == NETREG_REGISTERED) { 554 if (rtnl_locked) 555 unregister_netdevice(ndev); 556 else 557 unregister_netdev(ndev); 558 } else { 559 brcmf_cfg80211_free_netdev(ndev); 560 } 561 } 562 563 void brcmf_net_setcarrier(struct brcmf_if *ifp, bool on) 564 { 565 struct net_device *ndev; 566 567 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d carrier=%d\n", ifp->bsscfgidx, 568 on); 569 570 ndev = ifp->ndev; 571 brcmf_txflowblock_if(ifp, BRCMF_NETIF_STOP_REASON_DISCONNECTED, !on); 572 if (on) { 573 if (!netif_carrier_ok(ndev)) 574 netif_carrier_on(ndev); 575 576 } else { 577 if (netif_carrier_ok(ndev)) 578 netif_carrier_off(ndev); 579 } 580 } 581 582 static int brcmf_net_p2p_open(struct net_device *ndev) 583 { 584 brcmf_dbg(TRACE, "Enter\n"); 585 586 return brcmf_cfg80211_up(ndev); 587 } 588 589 static int brcmf_net_p2p_stop(struct net_device *ndev) 590 { 591 brcmf_dbg(TRACE, "Enter\n"); 592 593 return brcmf_cfg80211_down(ndev); 594 } 595 596 static netdev_tx_t brcmf_net_p2p_start_xmit(struct sk_buff *skb, 597 struct net_device *ndev) 598 { 599 if (skb) 600 dev_kfree_skb_any(skb); 601 602 return NETDEV_TX_OK; 603 } 604 605 static const struct net_device_ops brcmf_netdev_ops_p2p = { 606 .ndo_open = brcmf_net_p2p_open, 607 .ndo_stop = brcmf_net_p2p_stop, 608 .ndo_start_xmit = brcmf_net_p2p_start_xmit 609 }; 610 611 static int brcmf_net_p2p_attach(struct brcmf_if *ifp) 612 { 613 struct net_device *ndev; 614 615 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d mac=%pM\n", ifp->bsscfgidx, 616 ifp->mac_addr); 617 ndev = ifp->ndev; 618 619 ndev->netdev_ops = &brcmf_netdev_ops_p2p; 620 621 /* set the mac address */ 622 memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN); 623 624 if (register_netdev(ndev) != 0) { 625 brcmf_err("couldn't register the p2p net device\n"); 626 goto fail; 627 } 628 629 brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name); 630 631 return 0; 632 633 fail: 634 ifp->drvr->iflist[ifp->bsscfgidx] = NULL; 635 ndev->netdev_ops = NULL; 636 free_netdev(ndev); 637 return -EBADE; 638 } 639 640 struct brcmf_if *brcmf_add_if(struct brcmf_pub *drvr, s32 bsscfgidx, s32 ifidx, 641 bool is_p2pdev, const char *name, u8 *mac_addr) 642 { 643 struct brcmf_if *ifp; 644 struct net_device *ndev; 645 646 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d, ifidx=%d\n", bsscfgidx, ifidx); 647 648 ifp = drvr->iflist[bsscfgidx]; 649 /* 650 * Delete the existing interface before overwriting it 651 * in case we missed the BRCMF_E_IF_DEL event. 652 */ 653 if (ifp) { 654 if (ifidx) { 655 brcmf_err("ERROR: netdev:%s already exists\n", 656 ifp->ndev->name); 657 netif_stop_queue(ifp->ndev); 658 brcmf_net_detach(ifp->ndev, false); 659 drvr->iflist[bsscfgidx] = NULL; 660 } else { 661 brcmf_dbg(INFO, "netdev:%s ignore IF event\n", 662 ifp->ndev->name); 663 return ERR_PTR(-EINVAL); 664 } 665 } 666 667 if (!drvr->settings->p2p_enable && is_p2pdev) { 668 /* this is P2P_DEVICE interface */ 669 brcmf_dbg(INFO, "allocate non-netdev interface\n"); 670 ifp = kzalloc(sizeof(*ifp), GFP_KERNEL); 671 if (!ifp) 672 return ERR_PTR(-ENOMEM); 673 } else { 674 brcmf_dbg(INFO, "allocate netdev interface\n"); 675 /* Allocate netdev, including space for private structure */ 676 ndev = alloc_netdev(sizeof(*ifp), is_p2pdev ? "p2p%d" : name, 677 NET_NAME_UNKNOWN, ether_setup); 678 if (!ndev) 679 return ERR_PTR(-ENOMEM); 680 681 ndev->destructor = brcmf_cfg80211_free_netdev; 682 ifp = netdev_priv(ndev); 683 ifp->ndev = ndev; 684 /* store mapping ifidx to bsscfgidx */ 685 if (drvr->if2bss[ifidx] == BRCMF_BSSIDX_INVALID) 686 drvr->if2bss[ifidx] = bsscfgidx; 687 } 688 689 ifp->drvr = drvr; 690 drvr->iflist[bsscfgidx] = ifp; 691 ifp->ifidx = ifidx; 692 ifp->bsscfgidx = bsscfgidx; 693 694 init_waitqueue_head(&ifp->pend_8021x_wait); 695 spin_lock_init(&ifp->netif_stop_lock); 696 697 if (mac_addr != NULL) 698 memcpy(ifp->mac_addr, mac_addr, ETH_ALEN); 699 700 brcmf_dbg(TRACE, " ==== pid:%x, if:%s (%pM) created ===\n", 701 current->pid, name, ifp->mac_addr); 702 703 return ifp; 704 } 705 706 static void brcmf_del_if(struct brcmf_pub *drvr, s32 bsscfgidx, 707 bool rtnl_locked) 708 { 709 struct brcmf_if *ifp; 710 711 ifp = drvr->iflist[bsscfgidx]; 712 drvr->iflist[bsscfgidx] = NULL; 713 if (!ifp) { 714 brcmf_err("Null interface, bsscfgidx=%d\n", bsscfgidx); 715 return; 716 } 717 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d, ifidx=%d\n", bsscfgidx, 718 ifp->ifidx); 719 if (drvr->if2bss[ifp->ifidx] == bsscfgidx) 720 drvr->if2bss[ifp->ifidx] = BRCMF_BSSIDX_INVALID; 721 if (ifp->ndev) { 722 if (bsscfgidx == 0) { 723 if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) { 724 rtnl_lock(); 725 brcmf_netdev_stop(ifp->ndev); 726 rtnl_unlock(); 727 } 728 } else { 729 netif_stop_queue(ifp->ndev); 730 } 731 732 if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) { 733 cancel_work_sync(&ifp->setmacaddr_work); 734 cancel_work_sync(&ifp->multicast_work); 735 cancel_work_sync(&ifp->ndoffload_work); 736 } 737 brcmf_net_detach(ifp->ndev, rtnl_locked); 738 } else { 739 /* Only p2p device interfaces which get dynamically created 740 * end up here. In this case the p2p module should be informed 741 * about the removal of the interface within the firmware. If 742 * not then p2p commands towards the firmware will cause some 743 * serious troublesome side effects. The p2p module will clean 744 * up the ifp if needed. 745 */ 746 brcmf_p2p_ifp_removed(ifp); 747 kfree(ifp); 748 } 749 } 750 751 void brcmf_remove_interface(struct brcmf_if *ifp, bool rtnl_locked) 752 { 753 if (!ifp || WARN_ON(ifp->drvr->iflist[ifp->bsscfgidx] != ifp)) 754 return; 755 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d, ifidx=%d\n", ifp->bsscfgidx, 756 ifp->ifidx); 757 brcmf_fws_del_interface(ifp); 758 brcmf_del_if(ifp->drvr, ifp->bsscfgidx, rtnl_locked); 759 } 760 761 #ifdef CONFIG_INET 762 #define ARPOL_MAX_ENTRIES 8 763 static int brcmf_inetaddr_changed(struct notifier_block *nb, 764 unsigned long action, void *data) 765 { 766 struct brcmf_pub *drvr = container_of(nb, struct brcmf_pub, 767 inetaddr_notifier); 768 struct in_ifaddr *ifa = data; 769 struct net_device *ndev = ifa->ifa_dev->dev; 770 struct brcmf_if *ifp; 771 int idx, i, ret; 772 u32 val; 773 __be32 addr_table[ARPOL_MAX_ENTRIES] = {0}; 774 775 /* Find out if the notification is meant for us */ 776 for (idx = 0; idx < BRCMF_MAX_IFS; idx++) { 777 ifp = drvr->iflist[idx]; 778 if (ifp && ifp->ndev == ndev) 779 break; 780 if (idx == BRCMF_MAX_IFS - 1) 781 return NOTIFY_DONE; 782 } 783 784 /* check if arp offload is supported */ 785 ret = brcmf_fil_iovar_int_get(ifp, "arpoe", &val); 786 if (ret) 787 return NOTIFY_OK; 788 789 /* old version only support primary index */ 790 ret = brcmf_fil_iovar_int_get(ifp, "arp_version", &val); 791 if (ret) 792 val = 1; 793 if (val == 1) 794 ifp = drvr->iflist[0]; 795 796 /* retrieve the table from firmware */ 797 ret = brcmf_fil_iovar_data_get(ifp, "arp_hostip", addr_table, 798 sizeof(addr_table)); 799 if (ret) { 800 brcmf_err("fail to get arp ip table err:%d\n", ret); 801 return NOTIFY_OK; 802 } 803 804 for (i = 0; i < ARPOL_MAX_ENTRIES; i++) 805 if (ifa->ifa_address == addr_table[i]) 806 break; 807 808 switch (action) { 809 case NETDEV_UP: 810 if (i == ARPOL_MAX_ENTRIES) { 811 brcmf_dbg(TRACE, "add %pI4 to arp table\n", 812 &ifa->ifa_address); 813 /* set it directly */ 814 ret = brcmf_fil_iovar_data_set(ifp, "arp_hostip", 815 &ifa->ifa_address, sizeof(ifa->ifa_address)); 816 if (ret) 817 brcmf_err("add arp ip err %d\n", ret); 818 } 819 break; 820 case NETDEV_DOWN: 821 if (i < ARPOL_MAX_ENTRIES) { 822 addr_table[i] = 0; 823 brcmf_dbg(TRACE, "remove %pI4 from arp table\n", 824 &ifa->ifa_address); 825 /* clear the table in firmware */ 826 ret = brcmf_fil_iovar_data_set(ifp, "arp_hostip_clear", 827 NULL, 0); 828 if (ret) { 829 brcmf_err("fail to clear arp ip table err:%d\n", 830 ret); 831 return NOTIFY_OK; 832 } 833 for (i = 0; i < ARPOL_MAX_ENTRIES; i++) { 834 if (addr_table[i] == 0) 835 continue; 836 ret = brcmf_fil_iovar_data_set(ifp, "arp_hostip", 837 &addr_table[i], 838 sizeof(addr_table[i])); 839 if (ret) 840 brcmf_err("add arp ip err %d\n", 841 ret); 842 } 843 } 844 break; 845 default: 846 break; 847 } 848 849 return NOTIFY_OK; 850 } 851 #endif 852 853 #if IS_ENABLED(CONFIG_IPV6) 854 static int brcmf_inet6addr_changed(struct notifier_block *nb, 855 unsigned long action, void *data) 856 { 857 struct brcmf_pub *drvr = container_of(nb, struct brcmf_pub, 858 inet6addr_notifier); 859 struct inet6_ifaddr *ifa = data; 860 struct brcmf_if *ifp; 861 int i; 862 struct in6_addr *table; 863 864 /* Only handle primary interface */ 865 ifp = drvr->iflist[0]; 866 if (!ifp) 867 return NOTIFY_DONE; 868 if (ifp->ndev != ifa->idev->dev) 869 return NOTIFY_DONE; 870 871 table = ifp->ipv6_addr_tbl; 872 for (i = 0; i < NDOL_MAX_ENTRIES; i++) 873 if (ipv6_addr_equal(&ifa->addr, &table[i])) 874 break; 875 876 switch (action) { 877 case NETDEV_UP: 878 if (i == NDOL_MAX_ENTRIES) { 879 if (ifp->ipv6addr_idx < NDOL_MAX_ENTRIES) { 880 table[ifp->ipv6addr_idx++] = ifa->addr; 881 } else { 882 for (i = 0; i < NDOL_MAX_ENTRIES - 1; i++) 883 table[i] = table[i + 1]; 884 table[NDOL_MAX_ENTRIES - 1] = ifa->addr; 885 } 886 } 887 break; 888 case NETDEV_DOWN: 889 if (i < NDOL_MAX_ENTRIES) 890 for (; i < ifp->ipv6addr_idx; i++) 891 table[i] = table[i + 1]; 892 break; 893 default: 894 break; 895 } 896 897 schedule_work(&ifp->ndoffload_work); 898 899 return NOTIFY_OK; 900 } 901 #endif 902 903 int brcmf_attach(struct device *dev, struct brcmf_mp_device *settings) 904 { 905 struct brcmf_pub *drvr = NULL; 906 int ret = 0; 907 int i; 908 909 brcmf_dbg(TRACE, "Enter\n"); 910 911 /* Allocate primary brcmf_info */ 912 drvr = kzalloc(sizeof(struct brcmf_pub), GFP_ATOMIC); 913 if (!drvr) 914 return -ENOMEM; 915 916 for (i = 0; i < ARRAY_SIZE(drvr->if2bss); i++) 917 drvr->if2bss[i] = BRCMF_BSSIDX_INVALID; 918 919 mutex_init(&drvr->proto_block); 920 921 /* Link to bus module */ 922 drvr->hdrlen = 0; 923 drvr->bus_if = dev_get_drvdata(dev); 924 drvr->bus_if->drvr = drvr; 925 drvr->settings = settings; 926 927 /* attach debug facilities */ 928 brcmf_debug_attach(drvr); 929 930 /* Attach and link in the protocol */ 931 ret = brcmf_proto_attach(drvr); 932 if (ret != 0) { 933 brcmf_err("brcmf_prot_attach failed\n"); 934 goto fail; 935 } 936 937 /* attach firmware event handler */ 938 brcmf_fweh_attach(drvr); 939 940 return ret; 941 942 fail: 943 brcmf_detach(dev); 944 945 return ret; 946 } 947 948 static int brcmf_revinfo_read(struct seq_file *s, void *data) 949 { 950 struct brcmf_bus *bus_if = dev_get_drvdata(s->private); 951 struct brcmf_rev_info *ri = &bus_if->drvr->revinfo; 952 char drev[BRCMU_DOTREV_LEN]; 953 char brev[BRCMU_BOARDREV_LEN]; 954 955 seq_printf(s, "vendorid: 0x%04x\n", ri->vendorid); 956 seq_printf(s, "deviceid: 0x%04x\n", ri->deviceid); 957 seq_printf(s, "radiorev: %s\n", brcmu_dotrev_str(ri->radiorev, drev)); 958 seq_printf(s, "chipnum: %u (%x)\n", ri->chipnum, ri->chipnum); 959 seq_printf(s, "chiprev: %u\n", ri->chiprev); 960 seq_printf(s, "chippkg: %u\n", ri->chippkg); 961 seq_printf(s, "corerev: %u\n", ri->corerev); 962 seq_printf(s, "boardid: 0x%04x\n", ri->boardid); 963 seq_printf(s, "boardvendor: 0x%04x\n", ri->boardvendor); 964 seq_printf(s, "boardrev: %s\n", brcmu_boardrev_str(ri->boardrev, brev)); 965 seq_printf(s, "driverrev: %s\n", brcmu_dotrev_str(ri->driverrev, drev)); 966 seq_printf(s, "ucoderev: %u\n", ri->ucoderev); 967 seq_printf(s, "bus: %u\n", ri->bus); 968 seq_printf(s, "phytype: %u\n", ri->phytype); 969 seq_printf(s, "phyrev: %u\n", ri->phyrev); 970 seq_printf(s, "anarev: %u\n", ri->anarev); 971 seq_printf(s, "nvramrev: %08x\n", ri->nvramrev); 972 973 return 0; 974 } 975 976 int brcmf_bus_start(struct device *dev) 977 { 978 int ret = -1; 979 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 980 struct brcmf_pub *drvr = bus_if->drvr; 981 struct brcmf_if *ifp; 982 struct brcmf_if *p2p_ifp; 983 984 brcmf_dbg(TRACE, "\n"); 985 986 /* add primary networking interface */ 987 ifp = brcmf_add_if(drvr, 0, 0, false, "wlan%d", NULL); 988 if (IS_ERR(ifp)) 989 return PTR_ERR(ifp); 990 991 p2p_ifp = NULL; 992 993 /* signal bus ready */ 994 brcmf_bus_change_state(bus_if, BRCMF_BUS_UP); 995 996 /* Bus is ready, do any initialization */ 997 ret = brcmf_c_preinit_dcmds(ifp); 998 if (ret < 0) 999 goto fail; 1000 1001 brcmf_debugfs_add_entry(drvr, "revinfo", brcmf_revinfo_read); 1002 1003 /* assure we have chipid before feature attach */ 1004 if (!bus_if->chip) { 1005 bus_if->chip = drvr->revinfo.chipnum; 1006 bus_if->chiprev = drvr->revinfo.chiprev; 1007 brcmf_dbg(INFO, "firmware revinfo: chip %x (%d) rev %d\n", 1008 bus_if->chip, bus_if->chip, bus_if->chiprev); 1009 } 1010 brcmf_feat_attach(drvr); 1011 1012 ret = brcmf_fws_init(drvr); 1013 if (ret < 0) 1014 goto fail; 1015 1016 brcmf_fws_add_interface(ifp); 1017 1018 drvr->config = brcmf_cfg80211_attach(drvr, bus_if->dev, 1019 drvr->settings->p2p_enable); 1020 if (drvr->config == NULL) { 1021 ret = -ENOMEM; 1022 goto fail; 1023 } 1024 1025 ret = brcmf_net_attach(ifp, false); 1026 1027 if ((!ret) && (drvr->settings->p2p_enable)) { 1028 p2p_ifp = drvr->iflist[1]; 1029 if (p2p_ifp) 1030 ret = brcmf_net_p2p_attach(p2p_ifp); 1031 } 1032 1033 if (ret) 1034 goto fail; 1035 1036 #ifdef CONFIG_INET 1037 drvr->inetaddr_notifier.notifier_call = brcmf_inetaddr_changed; 1038 ret = register_inetaddr_notifier(&drvr->inetaddr_notifier); 1039 if (ret) 1040 goto fail; 1041 1042 #if IS_ENABLED(CONFIG_IPV6) 1043 drvr->inet6addr_notifier.notifier_call = brcmf_inet6addr_changed; 1044 ret = register_inet6addr_notifier(&drvr->inet6addr_notifier); 1045 if (ret) { 1046 unregister_inetaddr_notifier(&drvr->inetaddr_notifier); 1047 goto fail; 1048 } 1049 #endif 1050 #endif /* CONFIG_INET */ 1051 1052 return 0; 1053 1054 fail: 1055 brcmf_err("failed: %d\n", ret); 1056 if (drvr->config) { 1057 brcmf_cfg80211_detach(drvr->config); 1058 drvr->config = NULL; 1059 } 1060 if (drvr->fws) { 1061 brcmf_fws_del_interface(ifp); 1062 brcmf_fws_deinit(drvr); 1063 } 1064 if (ifp) 1065 brcmf_net_detach(ifp->ndev, false); 1066 if (p2p_ifp) 1067 brcmf_net_detach(p2p_ifp->ndev, false); 1068 drvr->iflist[0] = NULL; 1069 drvr->iflist[1] = NULL; 1070 if (drvr->settings->ignore_probe_fail) 1071 ret = 0; 1072 1073 return ret; 1074 } 1075 1076 void brcmf_bus_add_txhdrlen(struct device *dev, uint len) 1077 { 1078 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1079 struct brcmf_pub *drvr = bus_if->drvr; 1080 1081 if (drvr) { 1082 drvr->hdrlen += len; 1083 } 1084 } 1085 1086 static void brcmf_bus_detach(struct brcmf_pub *drvr) 1087 { 1088 brcmf_dbg(TRACE, "Enter\n"); 1089 1090 if (drvr) { 1091 /* Stop the bus module */ 1092 brcmf_bus_stop(drvr->bus_if); 1093 } 1094 } 1095 1096 void brcmf_dev_reset(struct device *dev) 1097 { 1098 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1099 struct brcmf_pub *drvr = bus_if->drvr; 1100 1101 if (drvr == NULL) 1102 return; 1103 1104 if (drvr->iflist[0]) 1105 brcmf_fil_cmd_int_set(drvr->iflist[0], BRCMF_C_TERMINATED, 1); 1106 } 1107 1108 void brcmf_detach(struct device *dev) 1109 { 1110 s32 i; 1111 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1112 struct brcmf_pub *drvr = bus_if->drvr; 1113 1114 brcmf_dbg(TRACE, "Enter\n"); 1115 1116 if (drvr == NULL) 1117 return; 1118 1119 #ifdef CONFIG_INET 1120 unregister_inetaddr_notifier(&drvr->inetaddr_notifier); 1121 #endif 1122 1123 #if IS_ENABLED(CONFIG_IPV6) 1124 unregister_inet6addr_notifier(&drvr->inet6addr_notifier); 1125 #endif 1126 1127 /* stop firmware event handling */ 1128 brcmf_fweh_detach(drvr); 1129 if (drvr->config) 1130 brcmf_p2p_detach(&drvr->config->p2p); 1131 1132 brcmf_bus_change_state(bus_if, BRCMF_BUS_DOWN); 1133 1134 /* make sure primary interface removed last */ 1135 for (i = BRCMF_MAX_IFS-1; i > -1; i--) 1136 brcmf_remove_interface(drvr->iflist[i], false); 1137 1138 brcmf_cfg80211_detach(drvr->config); 1139 1140 brcmf_fws_deinit(drvr); 1141 1142 brcmf_bus_detach(drvr); 1143 1144 brcmf_proto_detach(drvr); 1145 1146 brcmf_debug_detach(drvr); 1147 bus_if->drvr = NULL; 1148 kfree(drvr); 1149 } 1150 1151 s32 brcmf_iovar_data_set(struct device *dev, char *name, void *data, u32 len) 1152 { 1153 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1154 struct brcmf_if *ifp = bus_if->drvr->iflist[0]; 1155 1156 return brcmf_fil_iovar_data_set(ifp, name, data, len); 1157 } 1158 1159 static int brcmf_get_pend_8021x_cnt(struct brcmf_if *ifp) 1160 { 1161 return atomic_read(&ifp->pend_8021x_cnt); 1162 } 1163 1164 int brcmf_netdev_wait_pend8021x(struct brcmf_if *ifp) 1165 { 1166 int err; 1167 1168 err = wait_event_timeout(ifp->pend_8021x_wait, 1169 !brcmf_get_pend_8021x_cnt(ifp), 1170 MAX_WAIT_FOR_8021X_TX); 1171 1172 WARN_ON(!err); 1173 1174 return !err; 1175 } 1176 1177 void brcmf_bus_change_state(struct brcmf_bus *bus, enum brcmf_bus_state state) 1178 { 1179 struct brcmf_pub *drvr = bus->drvr; 1180 struct net_device *ndev; 1181 int ifidx; 1182 1183 brcmf_dbg(TRACE, "%d -> %d\n", bus->state, state); 1184 bus->state = state; 1185 1186 if (state == BRCMF_BUS_UP) { 1187 for (ifidx = 0; ifidx < BRCMF_MAX_IFS; ifidx++) { 1188 if ((drvr->iflist[ifidx]) && 1189 (drvr->iflist[ifidx]->ndev)) { 1190 ndev = drvr->iflist[ifidx]->ndev; 1191 if (netif_queue_stopped(ndev)) 1192 netif_wake_queue(ndev); 1193 } 1194 } 1195 } 1196 } 1197 1198 static void brcmf_driver_register(struct work_struct *work) 1199 { 1200 #ifdef CONFIG_BRCMFMAC_SDIO 1201 brcmf_sdio_register(); 1202 #endif 1203 #ifdef CONFIG_BRCMFMAC_USB 1204 brcmf_usb_register(); 1205 #endif 1206 #ifdef CONFIG_BRCMFMAC_PCIE 1207 brcmf_pcie_register(); 1208 #endif 1209 } 1210 static DECLARE_WORK(brcmf_driver_work, brcmf_driver_register); 1211 1212 int __init brcmf_core_init(void) 1213 { 1214 if (!schedule_work(&brcmf_driver_work)) 1215 return -EBUSY; 1216 1217 return 0; 1218 } 1219 1220 void __exit brcmf_core_exit(void) 1221 { 1222 cancel_work_sync(&brcmf_driver_work); 1223 1224 #ifdef CONFIG_BRCMFMAC_SDIO 1225 brcmf_sdio_exit(); 1226 #endif 1227 #ifdef CONFIG_BRCMFMAC_USB 1228 brcmf_usb_exit(); 1229 #endif 1230 #ifdef CONFIG_BRCMFMAC_PCIE 1231 brcmf_pcie_exit(); 1232 #endif 1233 } 1234 1235