1 // SPDX-License-Identifier: ISC 2 /* 3 * Copyright (c) 2010 Broadcom Corporation 4 */ 5 6 #include <linux/kernel.h> 7 #include <linux/etherdevice.h> 8 #include <linux/module.h> 9 #include <linux/inetdevice.h> 10 #include <net/cfg80211.h> 11 #include <net/rtnetlink.h> 12 #include <net/addrconf.h> 13 #include <net/ieee80211_radiotap.h> 14 #include <net/ipv6.h> 15 #include <brcmu_utils.h> 16 #include <brcmu_wifi.h> 17 18 #include "core.h" 19 #include "bus.h" 20 #include "debug.h" 21 #include "fwil_types.h" 22 #include "p2p.h" 23 #include "pno.h" 24 #include "cfg80211.h" 25 #include "fwil.h" 26 #include "feature.h" 27 #include "proto.h" 28 #include "pcie.h" 29 #include "common.h" 30 31 #define MAX_WAIT_FOR_8021X_TX msecs_to_jiffies(950) 32 33 #define BRCMF_BSSIDX_INVALID -1 34 35 #define RXS_PBPRES BIT(2) 36 37 #define D11_PHY_HDR_LEN 6 38 39 struct d11rxhdr_le { 40 __le16 RxFrameSize; 41 u16 PAD; 42 __le16 PhyRxStatus_0; 43 __le16 PhyRxStatus_1; 44 __le16 PhyRxStatus_2; 45 __le16 PhyRxStatus_3; 46 __le16 PhyRxStatus_4; 47 __le16 PhyRxStatus_5; 48 __le16 RxStatus1; 49 __le16 RxStatus2; 50 __le16 RxTSFTime; 51 __le16 RxChan; 52 u8 unknown[12]; 53 } __packed; 54 55 struct wlc_d11rxhdr { 56 struct d11rxhdr_le rxhdr; 57 __le32 tsf_l; 58 s8 rssi; 59 s8 rxpwr0; 60 s8 rxpwr1; 61 s8 do_rssi_ma; 62 s8 rxpwr[4]; 63 } __packed; 64 65 char *brcmf_ifname(struct brcmf_if *ifp) 66 { 67 if (!ifp) 68 return "<if_null>"; 69 70 if (ifp->ndev) 71 return ifp->ndev->name; 72 73 return "<if_none>"; 74 } 75 76 struct brcmf_if *brcmf_get_ifp(struct brcmf_pub *drvr, int ifidx) 77 { 78 struct brcmf_if *ifp; 79 s32 bsscfgidx; 80 81 if (ifidx < 0 || ifidx >= BRCMF_MAX_IFS) { 82 bphy_err(drvr, "ifidx %d out of range\n", ifidx); 83 return NULL; 84 } 85 86 ifp = NULL; 87 bsscfgidx = drvr->if2bss[ifidx]; 88 if (bsscfgidx >= 0) 89 ifp = drvr->iflist[bsscfgidx]; 90 91 return ifp; 92 } 93 94 void brcmf_configure_arp_nd_offload(struct brcmf_if *ifp, bool enable) 95 { 96 s32 err; 97 u32 mode; 98 99 if (enable) 100 mode = BRCMF_ARP_OL_AGENT | BRCMF_ARP_OL_PEER_AUTO_REPLY; 101 else 102 mode = 0; 103 104 /* Try to set and enable ARP offload feature, this may fail, then it */ 105 /* is simply not supported and err 0 will be returned */ 106 err = brcmf_fil_iovar_int_set(ifp, "arp_ol", mode); 107 if (err) { 108 brcmf_dbg(TRACE, "failed to set ARP offload mode to 0x%x, err = %d\n", 109 mode, err); 110 } else { 111 err = brcmf_fil_iovar_int_set(ifp, "arpoe", enable); 112 if (err) { 113 brcmf_dbg(TRACE, "failed to configure (%d) ARP offload err = %d\n", 114 enable, err); 115 } else { 116 brcmf_dbg(TRACE, "successfully configured (%d) ARP offload to 0x%x\n", 117 enable, mode); 118 } 119 } 120 121 err = brcmf_fil_iovar_int_set(ifp, "ndoe", enable); 122 if (err) { 123 brcmf_dbg(TRACE, "failed to configure (%d) ND offload err = %d\n", 124 enable, err); 125 } else { 126 brcmf_dbg(TRACE, "successfully configured (%d) ND offload to 0x%x\n", 127 enable, mode); 128 } 129 } 130 131 static void _brcmf_set_multicast_list(struct work_struct *work) 132 { 133 struct brcmf_if *ifp = container_of(work, struct brcmf_if, 134 multicast_work); 135 struct brcmf_pub *drvr = ifp->drvr; 136 struct net_device *ndev; 137 struct netdev_hw_addr *ha; 138 u32 cmd_value, cnt; 139 __le32 cnt_le; 140 char *buf, *bufp; 141 u32 buflen; 142 s32 err; 143 144 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx); 145 146 ndev = ifp->ndev; 147 148 /* Determine initial value of allmulti flag */ 149 cmd_value = (ndev->flags & IFF_ALLMULTI) ? true : false; 150 151 /* Send down the multicast list first. */ 152 cnt = netdev_mc_count(ndev); 153 buflen = sizeof(cnt) + (cnt * ETH_ALEN); 154 buf = kmalloc(buflen, GFP_ATOMIC); 155 if (!buf) 156 return; 157 bufp = buf; 158 159 cnt_le = cpu_to_le32(cnt); 160 memcpy(bufp, &cnt_le, sizeof(cnt_le)); 161 bufp += sizeof(cnt_le); 162 163 netdev_for_each_mc_addr(ha, ndev) { 164 if (!cnt) 165 break; 166 memcpy(bufp, ha->addr, ETH_ALEN); 167 bufp += ETH_ALEN; 168 cnt--; 169 } 170 171 err = brcmf_fil_iovar_data_set(ifp, "mcast_list", buf, buflen); 172 if (err < 0) { 173 bphy_err(drvr, "Setting mcast_list failed, %d\n", err); 174 cmd_value = cnt ? true : cmd_value; 175 } 176 177 kfree(buf); 178 179 /* 180 * Now send the allmulti setting. This is based on the setting in the 181 * net_device flags, but might be modified above to be turned on if we 182 * were trying to set some addresses and dongle rejected it... 183 */ 184 err = brcmf_fil_iovar_int_set(ifp, "allmulti", cmd_value); 185 if (err < 0) 186 bphy_err(drvr, "Setting allmulti failed, %d\n", err); 187 188 /*Finally, pick up the PROMISC flag */ 189 cmd_value = (ndev->flags & IFF_PROMISC) ? true : false; 190 err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_PROMISC, cmd_value); 191 if (err < 0) 192 bphy_err(drvr, "Setting BRCMF_C_SET_PROMISC failed, %d\n", 193 err); 194 brcmf_configure_arp_nd_offload(ifp, !cmd_value); 195 } 196 197 #if IS_ENABLED(CONFIG_IPV6) 198 static void _brcmf_update_ndtable(struct work_struct *work) 199 { 200 struct brcmf_if *ifp = container_of(work, struct brcmf_if, 201 ndoffload_work); 202 struct brcmf_pub *drvr = ifp->drvr; 203 int i, ret; 204 205 /* clear the table in firmware */ 206 ret = brcmf_fil_iovar_data_set(ifp, "nd_hostip_clear", NULL, 0); 207 if (ret) { 208 brcmf_dbg(TRACE, "fail to clear nd ip table err:%d\n", ret); 209 return; 210 } 211 212 for (i = 0; i < ifp->ipv6addr_idx; i++) { 213 ret = brcmf_fil_iovar_data_set(ifp, "nd_hostip", 214 &ifp->ipv6_addr_tbl[i], 215 sizeof(struct in6_addr)); 216 if (ret) 217 bphy_err(drvr, "add nd ip err %d\n", ret); 218 } 219 } 220 #else 221 static void _brcmf_update_ndtable(struct work_struct *work) 222 { 223 } 224 #endif 225 226 static int brcmf_netdev_set_mac_address(struct net_device *ndev, void *addr) 227 { 228 struct brcmf_if *ifp = netdev_priv(ndev); 229 struct sockaddr *sa = (struct sockaddr *)addr; 230 struct brcmf_pub *drvr = ifp->drvr; 231 int err; 232 233 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx); 234 235 err = brcmf_fil_iovar_data_set(ifp, "cur_etheraddr", sa->sa_data, 236 ETH_ALEN); 237 if (err < 0) { 238 bphy_err(drvr, "Setting cur_etheraddr failed, %d\n", err); 239 } else { 240 brcmf_dbg(TRACE, "updated to %pM\n", sa->sa_data); 241 memcpy(ifp->mac_addr, sa->sa_data, ETH_ALEN); 242 memcpy(ifp->ndev->dev_addr, ifp->mac_addr, ETH_ALEN); 243 } 244 return err; 245 } 246 247 static void brcmf_netdev_set_multicast_list(struct net_device *ndev) 248 { 249 struct brcmf_if *ifp = netdev_priv(ndev); 250 251 schedule_work(&ifp->multicast_work); 252 } 253 254 /** 255 * brcmf_skb_is_iapp - checks if skb is an IAPP packet 256 * 257 * @skb: skb to check 258 */ 259 static bool brcmf_skb_is_iapp(struct sk_buff *skb) 260 { 261 static const u8 iapp_l2_update_packet[6] __aligned(2) = { 262 0x00, 0x01, 0xaf, 0x81, 0x01, 0x00, 263 }; 264 unsigned char *eth_data; 265 #if !defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) 266 const u16 *a, *b; 267 #endif 268 269 if (skb->len - skb->mac_len != 6 || 270 !is_multicast_ether_addr(eth_hdr(skb)->h_dest)) 271 return false; 272 273 eth_data = skb_mac_header(skb) + ETH_HLEN; 274 #if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) 275 return !(((*(const u32 *)eth_data) ^ (*(const u32 *)iapp_l2_update_packet)) | 276 ((*(const u16 *)(eth_data + 4)) ^ (*(const u16 *)(iapp_l2_update_packet + 4)))); 277 #else 278 a = (const u16 *)eth_data; 279 b = (const u16 *)iapp_l2_update_packet; 280 281 return !((a[0] ^ b[0]) | (a[1] ^ b[1]) | (a[2] ^ b[2])); 282 #endif 283 } 284 285 static netdev_tx_t brcmf_netdev_start_xmit(struct sk_buff *skb, 286 struct net_device *ndev) 287 { 288 int ret; 289 struct brcmf_if *ifp = netdev_priv(ndev); 290 struct brcmf_pub *drvr = ifp->drvr; 291 struct ethhdr *eh; 292 int head_delta; 293 294 brcmf_dbg(DATA, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx); 295 296 /* Can the device send data? */ 297 if (drvr->bus_if->state != BRCMF_BUS_UP) { 298 bphy_err(drvr, "xmit rejected state=%d\n", drvr->bus_if->state); 299 netif_stop_queue(ndev); 300 dev_kfree_skb(skb); 301 ret = -ENODEV; 302 goto done; 303 } 304 305 /* Some recent Broadcom's firmwares disassociate STA when they receive 306 * an 802.11f ADD frame. This behavior can lead to a local DoS security 307 * issue. Attacker may trigger disassociation of any STA by sending a 308 * proper Ethernet frame to the wireless interface. 309 * 310 * Moreover this feature may break AP interfaces in some specific 311 * setups. This applies e.g. to the bridge with hairpin mode enabled and 312 * IFLA_BRPORT_MCAST_TO_UCAST set. IAPP packet generated by a firmware 313 * will get passed back to the wireless interface and cause immediate 314 * disassociation of a just-connected STA. 315 */ 316 if (!drvr->settings->iapp && brcmf_skb_is_iapp(skb)) { 317 dev_kfree_skb(skb); 318 ret = -EINVAL; 319 goto done; 320 } 321 322 /* Make sure there's enough writeable headroom */ 323 if (skb_headroom(skb) < drvr->hdrlen || skb_header_cloned(skb)) { 324 head_delta = max_t(int, drvr->hdrlen - skb_headroom(skb), 0); 325 326 brcmf_dbg(INFO, "%s: insufficient headroom (%d)\n", 327 brcmf_ifname(ifp), head_delta); 328 atomic_inc(&drvr->bus_if->stats.pktcowed); 329 ret = pskb_expand_head(skb, ALIGN(head_delta, NET_SKB_PAD), 0, 330 GFP_ATOMIC); 331 if (ret < 0) { 332 bphy_err(drvr, "%s: failed to expand headroom\n", 333 brcmf_ifname(ifp)); 334 atomic_inc(&drvr->bus_if->stats.pktcow_failed); 335 goto done; 336 } 337 } 338 339 /* validate length for ether packet */ 340 if (skb->len < sizeof(*eh)) { 341 ret = -EINVAL; 342 dev_kfree_skb(skb); 343 goto done; 344 } 345 346 eh = (struct ethhdr *)(skb->data); 347 348 if (eh->h_proto == htons(ETH_P_PAE)) 349 atomic_inc(&ifp->pend_8021x_cnt); 350 351 /* determine the priority */ 352 if ((skb->priority == 0) || (skb->priority > 7)) 353 skb->priority = cfg80211_classify8021d(skb, NULL); 354 355 ret = brcmf_proto_tx_queue_data(drvr, ifp->ifidx, skb); 356 if (ret < 0) 357 brcmf_txfinalize(ifp, skb, false); 358 359 done: 360 if (ret) { 361 ndev->stats.tx_dropped++; 362 } else { 363 ndev->stats.tx_packets++; 364 ndev->stats.tx_bytes += skb->len; 365 } 366 367 /* Return ok: we always eat the packet */ 368 return NETDEV_TX_OK; 369 } 370 371 void brcmf_txflowblock_if(struct brcmf_if *ifp, 372 enum brcmf_netif_stop_reason reason, bool state) 373 { 374 unsigned long flags; 375 376 if (!ifp || !ifp->ndev) 377 return; 378 379 brcmf_dbg(TRACE, "enter: bsscfgidx=%d stop=0x%X reason=%d state=%d\n", 380 ifp->bsscfgidx, ifp->netif_stop, reason, state); 381 382 spin_lock_irqsave(&ifp->netif_stop_lock, flags); 383 if (state) { 384 if (!ifp->netif_stop) 385 netif_stop_queue(ifp->ndev); 386 ifp->netif_stop |= reason; 387 } else { 388 ifp->netif_stop &= ~reason; 389 if (!ifp->netif_stop) 390 netif_wake_queue(ifp->ndev); 391 } 392 spin_unlock_irqrestore(&ifp->netif_stop_lock, flags); 393 } 394 395 void brcmf_netif_rx(struct brcmf_if *ifp, struct sk_buff *skb) 396 { 397 /* Most of Broadcom's firmwares send 802.11f ADD frame every time a new 398 * STA connects to the AP interface. This is an obsoleted standard most 399 * users don't use, so don't pass these frames up unless requested. 400 */ 401 if (!ifp->drvr->settings->iapp && brcmf_skb_is_iapp(skb)) { 402 brcmu_pkt_buf_free_skb(skb); 403 return; 404 } 405 406 if (skb->pkt_type == PACKET_MULTICAST) 407 ifp->ndev->stats.multicast++; 408 409 if (!(ifp->ndev->flags & IFF_UP)) { 410 brcmu_pkt_buf_free_skb(skb); 411 return; 412 } 413 414 ifp->ndev->stats.rx_bytes += skb->len; 415 ifp->ndev->stats.rx_packets++; 416 417 brcmf_dbg(DATA, "rx proto=0x%X\n", ntohs(skb->protocol)); 418 if (in_interrupt()) 419 netif_rx(skb); 420 else 421 /* If the receive is not processed inside an ISR, 422 * the softirqd must be woken explicitly to service 423 * the NET_RX_SOFTIRQ. This is handled by netif_rx_ni(). 424 */ 425 netif_rx_ni(skb); 426 } 427 428 void brcmf_netif_mon_rx(struct brcmf_if *ifp, struct sk_buff *skb) 429 { 430 if (brcmf_feat_is_enabled(ifp, BRCMF_FEAT_MONITOR_FMT_RADIOTAP)) { 431 /* Do nothing */ 432 } else if (brcmf_feat_is_enabled(ifp, BRCMF_FEAT_MONITOR_FMT_HW_RX_HDR)) { 433 struct wlc_d11rxhdr *wlc_rxhdr = (struct wlc_d11rxhdr *)skb->data; 434 struct ieee80211_radiotap_header *radiotap; 435 unsigned int offset; 436 u16 RxStatus1; 437 438 RxStatus1 = le16_to_cpu(wlc_rxhdr->rxhdr.RxStatus1); 439 440 offset = sizeof(struct wlc_d11rxhdr); 441 /* MAC inserts 2 pad bytes for a4 headers or QoS or A-MSDU 442 * subframes 443 */ 444 if (RxStatus1 & RXS_PBPRES) 445 offset += 2; 446 offset += D11_PHY_HDR_LEN; 447 448 skb_pull(skb, offset); 449 450 /* TODO: use RX header to fill some radiotap data */ 451 radiotap = skb_push(skb, sizeof(*radiotap)); 452 memset(radiotap, 0, sizeof(*radiotap)); 453 radiotap->it_len = cpu_to_le16(sizeof(*radiotap)); 454 455 /* TODO: 4 bytes with receive status? */ 456 skb->len -= 4; 457 } else { 458 struct ieee80211_radiotap_header *radiotap; 459 460 /* TODO: use RX status to fill some radiotap data */ 461 radiotap = skb_push(skb, sizeof(*radiotap)); 462 memset(radiotap, 0, sizeof(*radiotap)); 463 radiotap->it_len = cpu_to_le16(sizeof(*radiotap)); 464 465 /* TODO: 4 bytes with receive status? */ 466 skb->len -= 4; 467 } 468 469 skb->dev = ifp->ndev; 470 skb_reset_mac_header(skb); 471 skb->pkt_type = PACKET_OTHERHOST; 472 skb->protocol = htons(ETH_P_802_2); 473 474 brcmf_netif_rx(ifp, skb); 475 } 476 477 static int brcmf_rx_hdrpull(struct brcmf_pub *drvr, struct sk_buff *skb, 478 struct brcmf_if **ifp) 479 { 480 int ret; 481 482 /* process and remove protocol-specific header */ 483 ret = brcmf_proto_hdrpull(drvr, true, skb, ifp); 484 485 if (ret || !(*ifp) || !(*ifp)->ndev) { 486 if (ret != -ENODATA && *ifp) 487 (*ifp)->ndev->stats.rx_errors++; 488 brcmu_pkt_buf_free_skb(skb); 489 return -ENODATA; 490 } 491 492 skb->protocol = eth_type_trans(skb, (*ifp)->ndev); 493 return 0; 494 } 495 496 void brcmf_rx_frame(struct device *dev, struct sk_buff *skb, bool handle_event) 497 { 498 struct brcmf_if *ifp; 499 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 500 struct brcmf_pub *drvr = bus_if->drvr; 501 502 brcmf_dbg(DATA, "Enter: %s: rxp=%p\n", dev_name(dev), skb); 503 504 if (brcmf_rx_hdrpull(drvr, skb, &ifp)) 505 return; 506 507 if (brcmf_proto_is_reorder_skb(skb)) { 508 brcmf_proto_rxreorder(ifp, skb); 509 } else { 510 /* Process special event packets */ 511 if (handle_event) 512 brcmf_fweh_process_skb(ifp->drvr, skb, 513 BCMILCP_SUBTYPE_VENDOR_LONG); 514 515 brcmf_netif_rx(ifp, skb); 516 } 517 } 518 519 void brcmf_rx_event(struct device *dev, struct sk_buff *skb) 520 { 521 struct brcmf_if *ifp; 522 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 523 struct brcmf_pub *drvr = bus_if->drvr; 524 525 brcmf_dbg(EVENT, "Enter: %s: rxp=%p\n", dev_name(dev), skb); 526 527 if (brcmf_rx_hdrpull(drvr, skb, &ifp)) 528 return; 529 530 brcmf_fweh_process_skb(ifp->drvr, skb, 0); 531 brcmu_pkt_buf_free_skb(skb); 532 } 533 534 void brcmf_txfinalize(struct brcmf_if *ifp, struct sk_buff *txp, bool success) 535 { 536 struct ethhdr *eh; 537 u16 type; 538 539 eh = (struct ethhdr *)(txp->data); 540 type = ntohs(eh->h_proto); 541 542 if (type == ETH_P_PAE) { 543 atomic_dec(&ifp->pend_8021x_cnt); 544 if (waitqueue_active(&ifp->pend_8021x_wait)) 545 wake_up(&ifp->pend_8021x_wait); 546 } 547 548 if (!success) 549 ifp->ndev->stats.tx_errors++; 550 551 brcmu_pkt_buf_free_skb(txp); 552 } 553 554 static void brcmf_ethtool_get_drvinfo(struct net_device *ndev, 555 struct ethtool_drvinfo *info) 556 { 557 struct brcmf_if *ifp = netdev_priv(ndev); 558 struct brcmf_pub *drvr = ifp->drvr; 559 char drev[BRCMU_DOTREV_LEN] = "n/a"; 560 561 if (drvr->revinfo.result == 0) 562 brcmu_dotrev_str(drvr->revinfo.driverrev, drev); 563 strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver)); 564 strlcpy(info->version, drev, sizeof(info->version)); 565 strlcpy(info->fw_version, drvr->fwver, sizeof(info->fw_version)); 566 strlcpy(info->bus_info, dev_name(drvr->bus_if->dev), 567 sizeof(info->bus_info)); 568 } 569 570 static const struct ethtool_ops brcmf_ethtool_ops = { 571 .get_drvinfo = brcmf_ethtool_get_drvinfo, 572 }; 573 574 static int brcmf_netdev_stop(struct net_device *ndev) 575 { 576 struct brcmf_if *ifp = netdev_priv(ndev); 577 578 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx); 579 580 brcmf_cfg80211_down(ndev); 581 582 if (ifp->drvr->bus_if->state == BRCMF_BUS_UP) 583 brcmf_fil_iovar_data_set(ifp, "arp_hostip_clear", NULL, 0); 584 585 brcmf_net_setcarrier(ifp, false); 586 587 return 0; 588 } 589 590 static int brcmf_netdev_open(struct net_device *ndev) 591 { 592 struct brcmf_if *ifp = netdev_priv(ndev); 593 struct brcmf_pub *drvr = ifp->drvr; 594 struct brcmf_bus *bus_if = drvr->bus_if; 595 u32 toe_ol; 596 597 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx); 598 599 /* If bus is not ready, can't continue */ 600 if (bus_if->state != BRCMF_BUS_UP) { 601 bphy_err(drvr, "failed bus is not ready\n"); 602 return -EAGAIN; 603 } 604 605 atomic_set(&ifp->pend_8021x_cnt, 0); 606 607 /* Get current TOE mode from dongle */ 608 if (brcmf_fil_iovar_int_get(ifp, "toe_ol", &toe_ol) >= 0 609 && (toe_ol & TOE_TX_CSUM_OL) != 0) 610 ndev->features |= NETIF_F_IP_CSUM; 611 else 612 ndev->features &= ~NETIF_F_IP_CSUM; 613 614 if (brcmf_cfg80211_up(ndev)) { 615 bphy_err(drvr, "failed to bring up cfg80211\n"); 616 return -EIO; 617 } 618 619 /* Clear, carrier, set when connected or AP mode. */ 620 netif_carrier_off(ndev); 621 return 0; 622 } 623 624 static const struct net_device_ops brcmf_netdev_ops_pri = { 625 .ndo_open = brcmf_netdev_open, 626 .ndo_stop = brcmf_netdev_stop, 627 .ndo_start_xmit = brcmf_netdev_start_xmit, 628 .ndo_set_mac_address = brcmf_netdev_set_mac_address, 629 .ndo_set_rx_mode = brcmf_netdev_set_multicast_list 630 }; 631 632 int brcmf_net_attach(struct brcmf_if *ifp, bool rtnl_locked) 633 { 634 struct brcmf_pub *drvr = ifp->drvr; 635 struct net_device *ndev; 636 s32 err; 637 638 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d mac=%pM\n", ifp->bsscfgidx, 639 ifp->mac_addr); 640 ndev = ifp->ndev; 641 642 /* set appropriate operations */ 643 ndev->netdev_ops = &brcmf_netdev_ops_pri; 644 645 ndev->needed_headroom += drvr->hdrlen; 646 ndev->ethtool_ops = &brcmf_ethtool_ops; 647 648 /* set the mac address & netns */ 649 memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN); 650 dev_net_set(ndev, wiphy_net(cfg_to_wiphy(drvr->config))); 651 652 INIT_WORK(&ifp->multicast_work, _brcmf_set_multicast_list); 653 INIT_WORK(&ifp->ndoffload_work, _brcmf_update_ndtable); 654 655 if (rtnl_locked) 656 err = register_netdevice(ndev); 657 else 658 err = register_netdev(ndev); 659 if (err != 0) { 660 bphy_err(drvr, "couldn't register the net device\n"); 661 goto fail; 662 } 663 664 netif_carrier_off(ndev); 665 666 ndev->priv_destructor = brcmf_cfg80211_free_netdev; 667 brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name); 668 return 0; 669 670 fail: 671 drvr->iflist[ifp->bsscfgidx] = NULL; 672 ndev->netdev_ops = NULL; 673 return -EBADE; 674 } 675 676 void brcmf_net_detach(struct net_device *ndev, bool rtnl_locked) 677 { 678 if (ndev->reg_state == NETREG_REGISTERED) { 679 if (rtnl_locked) 680 unregister_netdevice(ndev); 681 else 682 unregister_netdev(ndev); 683 } else { 684 brcmf_cfg80211_free_netdev(ndev); 685 free_netdev(ndev); 686 } 687 } 688 689 static int brcmf_net_mon_open(struct net_device *ndev) 690 { 691 struct brcmf_if *ifp = netdev_priv(ndev); 692 struct brcmf_pub *drvr = ifp->drvr; 693 u32 monitor; 694 int err; 695 696 brcmf_dbg(TRACE, "Enter\n"); 697 698 err = brcmf_fil_cmd_int_get(ifp, BRCMF_C_GET_MONITOR, &monitor); 699 if (err) { 700 bphy_err(drvr, "BRCMF_C_GET_MONITOR error (%d)\n", err); 701 return err; 702 } else if (monitor) { 703 bphy_err(drvr, "Monitor mode is already enabled\n"); 704 return -EEXIST; 705 } 706 707 monitor = 3; 708 err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_MONITOR, monitor); 709 if (err) 710 bphy_err(drvr, "BRCMF_C_SET_MONITOR error (%d)\n", err); 711 712 return err; 713 } 714 715 static int brcmf_net_mon_stop(struct net_device *ndev) 716 { 717 struct brcmf_if *ifp = netdev_priv(ndev); 718 struct brcmf_pub *drvr = ifp->drvr; 719 u32 monitor; 720 int err; 721 722 brcmf_dbg(TRACE, "Enter\n"); 723 724 monitor = 0; 725 err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_MONITOR, monitor); 726 if (err) 727 bphy_err(drvr, "BRCMF_C_SET_MONITOR error (%d)\n", err); 728 729 return err; 730 } 731 732 static const struct net_device_ops brcmf_netdev_ops_mon = { 733 .ndo_open = brcmf_net_mon_open, 734 .ndo_stop = brcmf_net_mon_stop, 735 }; 736 737 int brcmf_net_mon_attach(struct brcmf_if *ifp) 738 { 739 struct brcmf_pub *drvr = ifp->drvr; 740 struct net_device *ndev; 741 int err; 742 743 brcmf_dbg(TRACE, "Enter\n"); 744 745 ndev = ifp->ndev; 746 ndev->netdev_ops = &brcmf_netdev_ops_mon; 747 748 err = register_netdevice(ndev); 749 if (err) 750 bphy_err(drvr, "Failed to register %s device\n", ndev->name); 751 752 return err; 753 } 754 755 void brcmf_net_setcarrier(struct brcmf_if *ifp, bool on) 756 { 757 struct net_device *ndev; 758 759 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d carrier=%d\n", ifp->bsscfgidx, 760 on); 761 762 ndev = ifp->ndev; 763 brcmf_txflowblock_if(ifp, BRCMF_NETIF_STOP_REASON_DISCONNECTED, !on); 764 if (on) { 765 if (!netif_carrier_ok(ndev)) 766 netif_carrier_on(ndev); 767 768 } else { 769 if (netif_carrier_ok(ndev)) 770 netif_carrier_off(ndev); 771 } 772 } 773 774 static int brcmf_net_p2p_open(struct net_device *ndev) 775 { 776 brcmf_dbg(TRACE, "Enter\n"); 777 778 return brcmf_cfg80211_up(ndev); 779 } 780 781 static int brcmf_net_p2p_stop(struct net_device *ndev) 782 { 783 brcmf_dbg(TRACE, "Enter\n"); 784 785 return brcmf_cfg80211_down(ndev); 786 } 787 788 static netdev_tx_t brcmf_net_p2p_start_xmit(struct sk_buff *skb, 789 struct net_device *ndev) 790 { 791 if (skb) 792 dev_kfree_skb_any(skb); 793 794 return NETDEV_TX_OK; 795 } 796 797 static const struct net_device_ops brcmf_netdev_ops_p2p = { 798 .ndo_open = brcmf_net_p2p_open, 799 .ndo_stop = brcmf_net_p2p_stop, 800 .ndo_start_xmit = brcmf_net_p2p_start_xmit 801 }; 802 803 static int brcmf_net_p2p_attach(struct brcmf_if *ifp) 804 { 805 struct brcmf_pub *drvr = ifp->drvr; 806 struct net_device *ndev; 807 808 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d mac=%pM\n", ifp->bsscfgidx, 809 ifp->mac_addr); 810 ndev = ifp->ndev; 811 812 ndev->netdev_ops = &brcmf_netdev_ops_p2p; 813 814 /* set the mac address */ 815 memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN); 816 817 if (register_netdev(ndev) != 0) { 818 bphy_err(drvr, "couldn't register the p2p net device\n"); 819 goto fail; 820 } 821 822 brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name); 823 824 return 0; 825 826 fail: 827 ifp->drvr->iflist[ifp->bsscfgidx] = NULL; 828 ndev->netdev_ops = NULL; 829 return -EBADE; 830 } 831 832 struct brcmf_if *brcmf_add_if(struct brcmf_pub *drvr, s32 bsscfgidx, s32 ifidx, 833 bool is_p2pdev, const char *name, u8 *mac_addr) 834 { 835 struct brcmf_if *ifp; 836 struct net_device *ndev; 837 838 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d, ifidx=%d\n", bsscfgidx, ifidx); 839 840 ifp = drvr->iflist[bsscfgidx]; 841 /* 842 * Delete the existing interface before overwriting it 843 * in case we missed the BRCMF_E_IF_DEL event. 844 */ 845 if (ifp) { 846 if (ifidx) { 847 bphy_err(drvr, "ERROR: netdev:%s already exists\n", 848 ifp->ndev->name); 849 netif_stop_queue(ifp->ndev); 850 brcmf_net_detach(ifp->ndev, false); 851 drvr->iflist[bsscfgidx] = NULL; 852 } else { 853 brcmf_dbg(INFO, "netdev:%s ignore IF event\n", 854 ifp->ndev->name); 855 return ERR_PTR(-EINVAL); 856 } 857 } 858 859 if (!drvr->settings->p2p_enable && is_p2pdev) { 860 /* this is P2P_DEVICE interface */ 861 brcmf_dbg(INFO, "allocate non-netdev interface\n"); 862 ifp = kzalloc(sizeof(*ifp), GFP_KERNEL); 863 if (!ifp) 864 return ERR_PTR(-ENOMEM); 865 } else { 866 brcmf_dbg(INFO, "allocate netdev interface\n"); 867 /* Allocate netdev, including space for private structure */ 868 ndev = alloc_netdev(sizeof(*ifp), is_p2pdev ? "p2p%d" : name, 869 NET_NAME_UNKNOWN, ether_setup); 870 if (!ndev) 871 return ERR_PTR(-ENOMEM); 872 873 ndev->needs_free_netdev = true; 874 ifp = netdev_priv(ndev); 875 ifp->ndev = ndev; 876 /* store mapping ifidx to bsscfgidx */ 877 if (drvr->if2bss[ifidx] == BRCMF_BSSIDX_INVALID) 878 drvr->if2bss[ifidx] = bsscfgidx; 879 } 880 881 ifp->drvr = drvr; 882 drvr->iflist[bsscfgidx] = ifp; 883 ifp->ifidx = ifidx; 884 ifp->bsscfgidx = bsscfgidx; 885 886 init_waitqueue_head(&ifp->pend_8021x_wait); 887 spin_lock_init(&ifp->netif_stop_lock); 888 889 if (mac_addr != NULL) 890 memcpy(ifp->mac_addr, mac_addr, ETH_ALEN); 891 892 brcmf_dbg(TRACE, " ==== pid:%x, if:%s (%pM) created ===\n", 893 current->pid, name, ifp->mac_addr); 894 895 return ifp; 896 } 897 898 static void brcmf_del_if(struct brcmf_pub *drvr, s32 bsscfgidx, 899 bool rtnl_locked) 900 { 901 struct brcmf_if *ifp; 902 int ifidx; 903 904 ifp = drvr->iflist[bsscfgidx]; 905 if (!ifp) { 906 bphy_err(drvr, "Null interface, bsscfgidx=%d\n", bsscfgidx); 907 return; 908 } 909 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d, ifidx=%d\n", bsscfgidx, 910 ifp->ifidx); 911 ifidx = ifp->ifidx; 912 913 if (ifp->ndev) { 914 if (bsscfgidx == 0) { 915 if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) { 916 rtnl_lock(); 917 brcmf_netdev_stop(ifp->ndev); 918 rtnl_unlock(); 919 } 920 } else { 921 netif_stop_queue(ifp->ndev); 922 } 923 924 if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) { 925 cancel_work_sync(&ifp->multicast_work); 926 cancel_work_sync(&ifp->ndoffload_work); 927 } 928 brcmf_net_detach(ifp->ndev, rtnl_locked); 929 } else { 930 /* Only p2p device interfaces which get dynamically created 931 * end up here. In this case the p2p module should be informed 932 * about the removal of the interface within the firmware. If 933 * not then p2p commands towards the firmware will cause some 934 * serious troublesome side effects. The p2p module will clean 935 * up the ifp if needed. 936 */ 937 brcmf_p2p_ifp_removed(ifp, rtnl_locked); 938 kfree(ifp); 939 } 940 941 drvr->iflist[bsscfgidx] = NULL; 942 if (drvr->if2bss[ifidx] == bsscfgidx) 943 drvr->if2bss[ifidx] = BRCMF_BSSIDX_INVALID; 944 } 945 946 void brcmf_remove_interface(struct brcmf_if *ifp, bool rtnl_locked) 947 { 948 if (!ifp || WARN_ON(ifp->drvr->iflist[ifp->bsscfgidx] != ifp)) 949 return; 950 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d, ifidx=%d\n", ifp->bsscfgidx, 951 ifp->ifidx); 952 brcmf_proto_del_if(ifp->drvr, ifp); 953 brcmf_del_if(ifp->drvr, ifp->bsscfgidx, rtnl_locked); 954 } 955 956 static int brcmf_psm_watchdog_notify(struct brcmf_if *ifp, 957 const struct brcmf_event_msg *evtmsg, 958 void *data) 959 { 960 struct brcmf_pub *drvr = ifp->drvr; 961 int err; 962 963 brcmf_dbg(TRACE, "enter: bsscfgidx=%d\n", ifp->bsscfgidx); 964 965 bphy_err(drvr, "PSM's watchdog has fired!\n"); 966 967 err = brcmf_debug_create_memdump(ifp->drvr->bus_if, data, 968 evtmsg->datalen); 969 if (err) 970 bphy_err(drvr, "Failed to get memory dump, %d\n", err); 971 972 return err; 973 } 974 975 #ifdef CONFIG_INET 976 #define ARPOL_MAX_ENTRIES 8 977 static int brcmf_inetaddr_changed(struct notifier_block *nb, 978 unsigned long action, void *data) 979 { 980 struct brcmf_pub *drvr = container_of(nb, struct brcmf_pub, 981 inetaddr_notifier); 982 struct in_ifaddr *ifa = data; 983 struct net_device *ndev = ifa->ifa_dev->dev; 984 struct brcmf_if *ifp; 985 int idx, i, ret; 986 u32 val; 987 __be32 addr_table[ARPOL_MAX_ENTRIES] = {0}; 988 989 /* Find out if the notification is meant for us */ 990 for (idx = 0; idx < BRCMF_MAX_IFS; idx++) { 991 ifp = drvr->iflist[idx]; 992 if (ifp && ifp->ndev == ndev) 993 break; 994 if (idx == BRCMF_MAX_IFS - 1) 995 return NOTIFY_DONE; 996 } 997 998 /* check if arp offload is supported */ 999 ret = brcmf_fil_iovar_int_get(ifp, "arpoe", &val); 1000 if (ret) 1001 return NOTIFY_OK; 1002 1003 /* old version only support primary index */ 1004 ret = brcmf_fil_iovar_int_get(ifp, "arp_version", &val); 1005 if (ret) 1006 val = 1; 1007 if (val == 1) 1008 ifp = drvr->iflist[0]; 1009 1010 /* retrieve the table from firmware */ 1011 ret = brcmf_fil_iovar_data_get(ifp, "arp_hostip", addr_table, 1012 sizeof(addr_table)); 1013 if (ret) { 1014 bphy_err(drvr, "fail to get arp ip table err:%d\n", ret); 1015 return NOTIFY_OK; 1016 } 1017 1018 for (i = 0; i < ARPOL_MAX_ENTRIES; i++) 1019 if (ifa->ifa_address == addr_table[i]) 1020 break; 1021 1022 switch (action) { 1023 case NETDEV_UP: 1024 if (i == ARPOL_MAX_ENTRIES) { 1025 brcmf_dbg(TRACE, "add %pI4 to arp table\n", 1026 &ifa->ifa_address); 1027 /* set it directly */ 1028 ret = brcmf_fil_iovar_data_set(ifp, "arp_hostip", 1029 &ifa->ifa_address, sizeof(ifa->ifa_address)); 1030 if (ret) 1031 bphy_err(drvr, "add arp ip err %d\n", ret); 1032 } 1033 break; 1034 case NETDEV_DOWN: 1035 if (i < ARPOL_MAX_ENTRIES) { 1036 addr_table[i] = 0; 1037 brcmf_dbg(TRACE, "remove %pI4 from arp table\n", 1038 &ifa->ifa_address); 1039 /* clear the table in firmware */ 1040 ret = brcmf_fil_iovar_data_set(ifp, "arp_hostip_clear", 1041 NULL, 0); 1042 if (ret) { 1043 bphy_err(drvr, "fail to clear arp ip table err:%d\n", 1044 ret); 1045 return NOTIFY_OK; 1046 } 1047 for (i = 0; i < ARPOL_MAX_ENTRIES; i++) { 1048 if (addr_table[i] == 0) 1049 continue; 1050 ret = brcmf_fil_iovar_data_set(ifp, "arp_hostip", 1051 &addr_table[i], 1052 sizeof(addr_table[i])); 1053 if (ret) 1054 bphy_err(drvr, "add arp ip err %d\n", 1055 ret); 1056 } 1057 } 1058 break; 1059 default: 1060 break; 1061 } 1062 1063 return NOTIFY_OK; 1064 } 1065 #endif 1066 1067 #if IS_ENABLED(CONFIG_IPV6) 1068 static int brcmf_inet6addr_changed(struct notifier_block *nb, 1069 unsigned long action, void *data) 1070 { 1071 struct brcmf_pub *drvr = container_of(nb, struct brcmf_pub, 1072 inet6addr_notifier); 1073 struct inet6_ifaddr *ifa = data; 1074 struct brcmf_if *ifp; 1075 int i; 1076 struct in6_addr *table; 1077 1078 /* Only handle primary interface */ 1079 ifp = drvr->iflist[0]; 1080 if (!ifp) 1081 return NOTIFY_DONE; 1082 if (ifp->ndev != ifa->idev->dev) 1083 return NOTIFY_DONE; 1084 1085 table = ifp->ipv6_addr_tbl; 1086 for (i = 0; i < NDOL_MAX_ENTRIES; i++) 1087 if (ipv6_addr_equal(&ifa->addr, &table[i])) 1088 break; 1089 1090 switch (action) { 1091 case NETDEV_UP: 1092 if (i == NDOL_MAX_ENTRIES) { 1093 if (ifp->ipv6addr_idx < NDOL_MAX_ENTRIES) { 1094 table[ifp->ipv6addr_idx++] = ifa->addr; 1095 } else { 1096 for (i = 0; i < NDOL_MAX_ENTRIES - 1; i++) 1097 table[i] = table[i + 1]; 1098 table[NDOL_MAX_ENTRIES - 1] = ifa->addr; 1099 } 1100 } 1101 break; 1102 case NETDEV_DOWN: 1103 if (i < NDOL_MAX_ENTRIES) { 1104 for (; i < ifp->ipv6addr_idx - 1; i++) 1105 table[i] = table[i + 1]; 1106 memset(&table[i], 0, sizeof(table[i])); 1107 ifp->ipv6addr_idx--; 1108 } 1109 break; 1110 default: 1111 break; 1112 } 1113 1114 schedule_work(&ifp->ndoffload_work); 1115 1116 return NOTIFY_OK; 1117 } 1118 #endif 1119 1120 static int brcmf_revinfo_read(struct seq_file *s, void *data) 1121 { 1122 struct brcmf_bus *bus_if = dev_get_drvdata(s->private); 1123 struct brcmf_rev_info *ri = &bus_if->drvr->revinfo; 1124 char drev[BRCMU_DOTREV_LEN]; 1125 char brev[BRCMU_BOARDREV_LEN]; 1126 1127 seq_printf(s, "vendorid: 0x%04x\n", ri->vendorid); 1128 seq_printf(s, "deviceid: 0x%04x\n", ri->deviceid); 1129 seq_printf(s, "radiorev: %s\n", brcmu_dotrev_str(ri->radiorev, drev)); 1130 seq_printf(s, "chip: %s\n", ri->chipname); 1131 seq_printf(s, "chippkg: %u\n", ri->chippkg); 1132 seq_printf(s, "corerev: %u\n", ri->corerev); 1133 seq_printf(s, "boardid: 0x%04x\n", ri->boardid); 1134 seq_printf(s, "boardvendor: 0x%04x\n", ri->boardvendor); 1135 seq_printf(s, "boardrev: %s\n", brcmu_boardrev_str(ri->boardrev, brev)); 1136 seq_printf(s, "driverrev: %s\n", brcmu_dotrev_str(ri->driverrev, drev)); 1137 seq_printf(s, "ucoderev: %u\n", ri->ucoderev); 1138 seq_printf(s, "bus: %u\n", ri->bus); 1139 seq_printf(s, "phytype: %u\n", ri->phytype); 1140 seq_printf(s, "phyrev: %u\n", ri->phyrev); 1141 seq_printf(s, "anarev: %u\n", ri->anarev); 1142 seq_printf(s, "nvramrev: %08x\n", ri->nvramrev); 1143 1144 seq_printf(s, "clmver: %s\n", bus_if->drvr->clmver); 1145 1146 return 0; 1147 } 1148 1149 static void brcmf_core_bus_reset(struct work_struct *work) 1150 { 1151 struct brcmf_pub *drvr = container_of(work, struct brcmf_pub, 1152 bus_reset); 1153 1154 brcmf_bus_reset(drvr->bus_if); 1155 } 1156 1157 static ssize_t bus_reset_write(struct file *file, const char __user *user_buf, 1158 size_t count, loff_t *ppos) 1159 { 1160 struct brcmf_pub *drvr = file->private_data; 1161 u8 value; 1162 1163 if (kstrtou8_from_user(user_buf, count, 0, &value)) 1164 return -EINVAL; 1165 1166 if (value != 1) 1167 return -EINVAL; 1168 1169 schedule_work(&drvr->bus_reset); 1170 1171 return count; 1172 } 1173 1174 static const struct file_operations bus_reset_fops = { 1175 .open = simple_open, 1176 .llseek = no_llseek, 1177 .write = bus_reset_write, 1178 }; 1179 1180 static int brcmf_bus_started(struct brcmf_pub *drvr, struct cfg80211_ops *ops) 1181 { 1182 int ret = -1; 1183 struct brcmf_bus *bus_if = drvr->bus_if; 1184 struct brcmf_if *ifp; 1185 struct brcmf_if *p2p_ifp; 1186 1187 brcmf_dbg(TRACE, "\n"); 1188 1189 /* add primary networking interface */ 1190 ifp = brcmf_add_if(drvr, 0, 0, false, "wlan%d", NULL); 1191 if (IS_ERR(ifp)) 1192 return PTR_ERR(ifp); 1193 1194 p2p_ifp = NULL; 1195 1196 /* signal bus ready */ 1197 brcmf_bus_change_state(bus_if, BRCMF_BUS_UP); 1198 1199 /* do bus specific preinit here */ 1200 ret = brcmf_bus_preinit(bus_if); 1201 if (ret < 0) 1202 goto fail; 1203 1204 /* Bus is ready, do any initialization */ 1205 ret = brcmf_c_preinit_dcmds(ifp); 1206 if (ret < 0) 1207 goto fail; 1208 1209 brcmf_feat_attach(drvr); 1210 1211 ret = brcmf_proto_init_done(drvr); 1212 if (ret < 0) 1213 goto fail; 1214 1215 brcmf_proto_add_if(drvr, ifp); 1216 1217 drvr->config = brcmf_cfg80211_attach(drvr, ops, 1218 drvr->settings->p2p_enable); 1219 if (drvr->config == NULL) { 1220 ret = -ENOMEM; 1221 goto fail; 1222 } 1223 1224 ret = brcmf_net_attach(ifp, false); 1225 1226 if ((!ret) && (drvr->settings->p2p_enable)) { 1227 p2p_ifp = drvr->iflist[1]; 1228 if (p2p_ifp) 1229 ret = brcmf_net_p2p_attach(p2p_ifp); 1230 } 1231 1232 if (ret) 1233 goto fail; 1234 1235 #ifdef CONFIG_INET 1236 drvr->inetaddr_notifier.notifier_call = brcmf_inetaddr_changed; 1237 ret = register_inetaddr_notifier(&drvr->inetaddr_notifier); 1238 if (ret) 1239 goto fail; 1240 1241 #if IS_ENABLED(CONFIG_IPV6) 1242 drvr->inet6addr_notifier.notifier_call = brcmf_inet6addr_changed; 1243 ret = register_inet6addr_notifier(&drvr->inet6addr_notifier); 1244 if (ret) { 1245 unregister_inetaddr_notifier(&drvr->inetaddr_notifier); 1246 goto fail; 1247 } 1248 #endif 1249 #endif /* CONFIG_INET */ 1250 1251 INIT_WORK(&drvr->bus_reset, brcmf_core_bus_reset); 1252 1253 /* populate debugfs */ 1254 brcmf_debugfs_add_entry(drvr, "revinfo", brcmf_revinfo_read); 1255 debugfs_create_file("reset", 0600, brcmf_debugfs_get_devdir(drvr), drvr, 1256 &bus_reset_fops); 1257 brcmf_feat_debugfs_create(drvr); 1258 brcmf_proto_debugfs_create(drvr); 1259 brcmf_bus_debugfs_create(bus_if); 1260 1261 return 0; 1262 1263 fail: 1264 bphy_err(drvr, "failed: %d\n", ret); 1265 if (drvr->config) { 1266 brcmf_cfg80211_detach(drvr->config); 1267 drvr->config = NULL; 1268 } 1269 brcmf_net_detach(ifp->ndev, false); 1270 if (p2p_ifp) 1271 brcmf_net_detach(p2p_ifp->ndev, false); 1272 drvr->iflist[0] = NULL; 1273 drvr->iflist[1] = NULL; 1274 if (drvr->settings->ignore_probe_fail) 1275 ret = 0; 1276 1277 return ret; 1278 } 1279 1280 int brcmf_alloc(struct device *dev, struct brcmf_mp_device *settings) 1281 { 1282 struct wiphy *wiphy; 1283 struct cfg80211_ops *ops; 1284 struct brcmf_pub *drvr = NULL; 1285 1286 brcmf_dbg(TRACE, "Enter\n"); 1287 1288 ops = brcmf_cfg80211_get_ops(settings); 1289 if (!ops) 1290 return -ENOMEM; 1291 1292 wiphy = wiphy_new(ops, sizeof(*drvr)); 1293 if (!wiphy) { 1294 kfree(ops); 1295 return -ENOMEM; 1296 } 1297 1298 set_wiphy_dev(wiphy, dev); 1299 drvr = wiphy_priv(wiphy); 1300 drvr->wiphy = wiphy; 1301 drvr->ops = ops; 1302 drvr->bus_if = dev_get_drvdata(dev); 1303 drvr->bus_if->drvr = drvr; 1304 drvr->settings = settings; 1305 1306 return 0; 1307 } 1308 1309 int brcmf_attach(struct device *dev) 1310 { 1311 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1312 struct brcmf_pub *drvr = bus_if->drvr; 1313 int ret = 0; 1314 int i; 1315 1316 brcmf_dbg(TRACE, "Enter\n"); 1317 1318 for (i = 0; i < ARRAY_SIZE(drvr->if2bss); i++) 1319 drvr->if2bss[i] = BRCMF_BSSIDX_INVALID; 1320 1321 mutex_init(&drvr->proto_block); 1322 1323 /* Link to bus module */ 1324 drvr->hdrlen = 0; 1325 1326 /* Attach and link in the protocol */ 1327 ret = brcmf_proto_attach(drvr); 1328 if (ret != 0) { 1329 bphy_err(drvr, "brcmf_prot_attach failed\n"); 1330 goto fail; 1331 } 1332 1333 /* Attach to events important for core code */ 1334 brcmf_fweh_register(drvr, BRCMF_E_PSM_WATCHDOG, 1335 brcmf_psm_watchdog_notify); 1336 1337 /* attach firmware event handler */ 1338 brcmf_fweh_attach(drvr); 1339 1340 ret = brcmf_bus_started(drvr, drvr->ops); 1341 if (ret != 0) { 1342 bphy_err(drvr, "dongle is not responding: err=%d\n", ret); 1343 goto fail; 1344 } 1345 1346 return 0; 1347 1348 fail: 1349 brcmf_detach(dev); 1350 1351 return ret; 1352 } 1353 1354 void brcmf_bus_add_txhdrlen(struct device *dev, uint len) 1355 { 1356 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1357 struct brcmf_pub *drvr = bus_if->drvr; 1358 1359 if (drvr) { 1360 drvr->hdrlen += len; 1361 } 1362 } 1363 1364 void brcmf_dev_reset(struct device *dev) 1365 { 1366 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1367 struct brcmf_pub *drvr = bus_if->drvr; 1368 1369 if (drvr == NULL) 1370 return; 1371 1372 if (drvr->iflist[0]) 1373 brcmf_fil_cmd_int_set(drvr->iflist[0], BRCMF_C_TERMINATED, 1); 1374 } 1375 1376 void brcmf_dev_coredump(struct device *dev) 1377 { 1378 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1379 1380 if (brcmf_debug_create_memdump(bus_if, NULL, 0) < 0) 1381 brcmf_dbg(TRACE, "failed to create coredump\n"); 1382 } 1383 1384 void brcmf_fw_crashed(struct device *dev) 1385 { 1386 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1387 struct brcmf_pub *drvr = bus_if->drvr; 1388 1389 bphy_err(drvr, "Firmware has halted or crashed\n"); 1390 1391 brcmf_dev_coredump(dev); 1392 1393 schedule_work(&drvr->bus_reset); 1394 } 1395 1396 void brcmf_detach(struct device *dev) 1397 { 1398 s32 i; 1399 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1400 struct brcmf_pub *drvr = bus_if->drvr; 1401 1402 brcmf_dbg(TRACE, "Enter\n"); 1403 1404 if (drvr == NULL) 1405 return; 1406 1407 #ifdef CONFIG_INET 1408 unregister_inetaddr_notifier(&drvr->inetaddr_notifier); 1409 #endif 1410 1411 #if IS_ENABLED(CONFIG_IPV6) 1412 unregister_inet6addr_notifier(&drvr->inet6addr_notifier); 1413 #endif 1414 1415 brcmf_bus_change_state(bus_if, BRCMF_BUS_DOWN); 1416 brcmf_bus_stop(drvr->bus_if); 1417 1418 brcmf_fweh_detach(drvr); 1419 brcmf_proto_detach(drvr); 1420 1421 if (drvr->mon_if) { 1422 brcmf_net_detach(drvr->mon_if->ndev, false); 1423 drvr->mon_if = NULL; 1424 } 1425 1426 /* make sure primary interface removed last */ 1427 for (i = BRCMF_MAX_IFS - 1; i > -1; i--) { 1428 if (drvr->iflist[i]) 1429 brcmf_del_if(drvr, drvr->iflist[i]->bsscfgidx, false); 1430 } 1431 1432 if (drvr->config) { 1433 brcmf_p2p_detach(&drvr->config->p2p); 1434 brcmf_cfg80211_detach(drvr->config); 1435 drvr->config = NULL; 1436 } 1437 } 1438 1439 void brcmf_free(struct device *dev) 1440 { 1441 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1442 struct brcmf_pub *drvr = bus_if->drvr; 1443 1444 if (!drvr) 1445 return; 1446 1447 bus_if->drvr = NULL; 1448 1449 kfree(drvr->ops); 1450 1451 wiphy_free(drvr->wiphy); 1452 } 1453 1454 s32 brcmf_iovar_data_set(struct device *dev, char *name, void *data, u32 len) 1455 { 1456 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1457 struct brcmf_if *ifp = bus_if->drvr->iflist[0]; 1458 1459 return brcmf_fil_iovar_data_set(ifp, name, data, len); 1460 } 1461 1462 static int brcmf_get_pend_8021x_cnt(struct brcmf_if *ifp) 1463 { 1464 return atomic_read(&ifp->pend_8021x_cnt); 1465 } 1466 1467 int brcmf_netdev_wait_pend8021x(struct brcmf_if *ifp) 1468 { 1469 struct brcmf_pub *drvr = ifp->drvr; 1470 int err; 1471 1472 err = wait_event_timeout(ifp->pend_8021x_wait, 1473 !brcmf_get_pend_8021x_cnt(ifp), 1474 MAX_WAIT_FOR_8021X_TX); 1475 1476 if (!err) 1477 bphy_err(drvr, "Timed out waiting for no pending 802.1x packets\n"); 1478 1479 return !err; 1480 } 1481 1482 void brcmf_bus_change_state(struct brcmf_bus *bus, enum brcmf_bus_state state) 1483 { 1484 struct brcmf_pub *drvr = bus->drvr; 1485 struct net_device *ndev; 1486 int ifidx; 1487 1488 brcmf_dbg(TRACE, "%d -> %d\n", bus->state, state); 1489 1490 if (!drvr) { 1491 brcmf_dbg(INFO, "ignoring transition, bus not attached yet\n"); 1492 return; 1493 } 1494 1495 bus->state = state; 1496 1497 if (state == BRCMF_BUS_UP) { 1498 for (ifidx = 0; ifidx < BRCMF_MAX_IFS; ifidx++) { 1499 if ((drvr->iflist[ifidx]) && 1500 (drvr->iflist[ifidx]->ndev)) { 1501 ndev = drvr->iflist[ifidx]->ndev; 1502 if (netif_queue_stopped(ndev)) 1503 netif_wake_queue(ndev); 1504 } 1505 } 1506 } 1507 } 1508 1509 static void brcmf_driver_register(struct work_struct *work) 1510 { 1511 #ifdef CONFIG_BRCMFMAC_SDIO 1512 brcmf_sdio_register(); 1513 #endif 1514 #ifdef CONFIG_BRCMFMAC_USB 1515 brcmf_usb_register(); 1516 #endif 1517 #ifdef CONFIG_BRCMFMAC_PCIE 1518 brcmf_pcie_register(); 1519 #endif 1520 } 1521 static DECLARE_WORK(brcmf_driver_work, brcmf_driver_register); 1522 1523 int __init brcmf_core_init(void) 1524 { 1525 if (!schedule_work(&brcmf_driver_work)) 1526 return -EBUSY; 1527 1528 return 0; 1529 } 1530 1531 void __exit brcmf_core_exit(void) 1532 { 1533 cancel_work_sync(&brcmf_driver_work); 1534 1535 #ifdef CONFIG_BRCMFMAC_SDIO 1536 brcmf_sdio_exit(); 1537 #endif 1538 #ifdef CONFIG_BRCMFMAC_USB 1539 brcmf_usb_exit(); 1540 #endif 1541 #ifdef CONFIG_BRCMFMAC_PCIE 1542 brcmf_pcie_exit(); 1543 #endif 1544 } 1545 1546