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 <linux/property.h> 11 #include <net/cfg80211.h> 12 #include <net/rtnetlink.h> 13 #include <net/addrconf.h> 14 #include <net/ieee80211_radiotap.h> 15 #include <net/ipv6.h> 16 #include <brcmu_utils.h> 17 #include <brcmu_wifi.h> 18 19 #include "core.h" 20 #include "bus.h" 21 #include "debug.h" 22 #include "fwil_types.h" 23 #include "p2p.h" 24 #include "pno.h" 25 #include "cfg80211.h" 26 #include "fwil.h" 27 #include "feature.h" 28 #include "proto.h" 29 #include "pcie.h" 30 #include "common.h" 31 32 #define MAX_WAIT_FOR_8021X_TX msecs_to_jiffies(950) 33 34 #define BRCMF_BSSIDX_INVALID -1 35 36 #define RXS_PBPRES BIT(2) 37 38 #define D11_PHY_HDR_LEN 6 39 40 struct d11rxhdr_le { 41 __le16 RxFrameSize; 42 u16 PAD; 43 __le16 PhyRxStatus_0; 44 __le16 PhyRxStatus_1; 45 __le16 PhyRxStatus_2; 46 __le16 PhyRxStatus_3; 47 __le16 PhyRxStatus_4; 48 __le16 PhyRxStatus_5; 49 __le16 RxStatus1; 50 __le16 RxStatus2; 51 __le16 RxTSFTime; 52 __le16 RxChan; 53 u8 unknown[12]; 54 } __packed; 55 56 struct wlc_d11rxhdr { 57 struct d11rxhdr_le rxhdr; 58 __le32 tsf_l; 59 s8 rssi; 60 s8 rxpwr0; 61 s8 rxpwr1; 62 s8 do_rssi_ma; 63 s8 rxpwr[4]; 64 } __packed; 65 66 char *brcmf_ifname(struct brcmf_if *ifp) 67 { 68 if (!ifp) 69 return "<if_null>"; 70 71 if (ifp->ndev) 72 return ifp->ndev->name; 73 74 return "<if_none>"; 75 } 76 77 struct brcmf_if *brcmf_get_ifp(struct brcmf_pub *drvr, int ifidx) 78 { 79 struct brcmf_if *ifp; 80 s32 bsscfgidx; 81 82 if (ifidx < 0 || ifidx >= BRCMF_MAX_IFS) { 83 bphy_err(drvr, "ifidx %d out of range\n", ifidx); 84 return NULL; 85 } 86 87 ifp = NULL; 88 bsscfgidx = drvr->if2bss[ifidx]; 89 if (bsscfgidx >= 0) 90 ifp = drvr->iflist[bsscfgidx]; 91 92 return ifp; 93 } 94 95 void brcmf_configure_arp_nd_offload(struct brcmf_if *ifp, bool enable) 96 { 97 s32 err; 98 u32 mode; 99 100 if (enable) 101 mode = BRCMF_ARP_OL_AGENT | BRCMF_ARP_OL_PEER_AUTO_REPLY; 102 else 103 mode = 0; 104 105 /* Try to set and enable ARP offload feature, this may fail, then it */ 106 /* is simply not supported and err 0 will be returned */ 107 err = brcmf_fil_iovar_int_set(ifp, "arp_ol", mode); 108 if (err) { 109 brcmf_dbg(TRACE, "failed to set ARP offload mode to 0x%x, err = %d\n", 110 mode, err); 111 } else { 112 err = brcmf_fil_iovar_int_set(ifp, "arpoe", enable); 113 if (err) { 114 brcmf_dbg(TRACE, "failed to configure (%d) ARP offload err = %d\n", 115 enable, err); 116 } else { 117 brcmf_dbg(TRACE, "successfully configured (%d) ARP offload to 0x%x\n", 118 enable, mode); 119 } 120 } 121 122 err = brcmf_fil_iovar_int_set(ifp, "ndoe", enable); 123 if (err) { 124 brcmf_dbg(TRACE, "failed to configure (%d) ND offload err = %d\n", 125 enable, err); 126 } else { 127 brcmf_dbg(TRACE, "successfully configured (%d) ND offload to 0x%x\n", 128 enable, mode); 129 } 130 } 131 132 static void _brcmf_set_multicast_list(struct work_struct *work) 133 { 134 struct brcmf_if *ifp = container_of(work, struct brcmf_if, 135 multicast_work); 136 struct brcmf_pub *drvr = ifp->drvr; 137 struct net_device *ndev; 138 struct netdev_hw_addr *ha; 139 u32 cmd_value, cnt; 140 __le32 cnt_le; 141 char *buf, *bufp; 142 u32 buflen; 143 s32 err; 144 145 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx); 146 147 ndev = ifp->ndev; 148 149 /* Determine initial value of allmulti flag */ 150 cmd_value = (ndev->flags & IFF_ALLMULTI) ? true : false; 151 152 /* Send down the multicast list first. */ 153 cnt = netdev_mc_count(ndev); 154 buflen = sizeof(cnt) + (cnt * ETH_ALEN); 155 buf = kmalloc(buflen, GFP_KERNEL); 156 if (!buf) 157 return; 158 bufp = buf; 159 160 cnt_le = cpu_to_le32(cnt); 161 memcpy(bufp, &cnt_le, sizeof(cnt_le)); 162 bufp += sizeof(cnt_le); 163 164 netdev_for_each_mc_addr(ha, ndev) { 165 if (!cnt) 166 break; 167 memcpy(bufp, ha->addr, ETH_ALEN); 168 bufp += ETH_ALEN; 169 cnt--; 170 } 171 172 err = brcmf_fil_iovar_data_set(ifp, "mcast_list", buf, buflen); 173 if (err < 0) { 174 bphy_err(drvr, "Setting mcast_list failed, %d\n", err); 175 cmd_value = cnt ? true : cmd_value; 176 } 177 178 kfree(buf); 179 180 /* 181 * Now send the allmulti setting. This is based on the setting in the 182 * net_device flags, but might be modified above to be turned on if we 183 * were trying to set some addresses and dongle rejected it... 184 */ 185 err = brcmf_fil_iovar_int_set(ifp, "allmulti", cmd_value); 186 if (err < 0) 187 bphy_err(drvr, "Setting allmulti failed, %d\n", err); 188 189 /*Finally, pick up the PROMISC flag */ 190 cmd_value = (ndev->flags & IFF_PROMISC) ? true : false; 191 err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_PROMISC, cmd_value); 192 if (err < 0) { 193 /* PROMISC unsupported by firmware of older chips */ 194 if (err == -EBADE) 195 bphy_info_once(drvr, "BRCMF_C_SET_PROMISC unsupported\n"); 196 else 197 bphy_err(drvr, "Setting BRCMF_C_SET_PROMISC failed, err=%d\n", 198 err); 199 } 200 brcmf_configure_arp_nd_offload(ifp, !cmd_value); 201 } 202 203 #if IS_ENABLED(CONFIG_IPV6) 204 static void _brcmf_update_ndtable(struct work_struct *work) 205 { 206 struct brcmf_if *ifp = container_of(work, struct brcmf_if, 207 ndoffload_work); 208 struct brcmf_pub *drvr = ifp->drvr; 209 int i, ret; 210 211 /* clear the table in firmware */ 212 ret = brcmf_fil_iovar_data_set(ifp, "nd_hostip_clear", NULL, 0); 213 if (ret) { 214 brcmf_dbg(TRACE, "fail to clear nd ip table err:%d\n", ret); 215 return; 216 } 217 218 for (i = 0; i < ifp->ipv6addr_idx; i++) { 219 ret = brcmf_fil_iovar_data_set(ifp, "nd_hostip", 220 &ifp->ipv6_addr_tbl[i], 221 sizeof(struct in6_addr)); 222 if (ret) 223 bphy_err(drvr, "add nd ip err %d\n", ret); 224 } 225 } 226 #else 227 static void _brcmf_update_ndtable(struct work_struct *work) 228 { 229 } 230 #endif 231 232 static int brcmf_netdev_set_mac_address(struct net_device *ndev, void *addr) 233 { 234 struct brcmf_if *ifp = netdev_priv(ndev); 235 struct sockaddr *sa = (struct sockaddr *)addr; 236 int err; 237 238 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx); 239 240 err = brcmf_c_set_cur_etheraddr(ifp, sa->sa_data); 241 if (err >= 0) { 242 brcmf_dbg(TRACE, "updated to %pM\n", sa->sa_data); 243 memcpy(ifp->mac_addr, sa->sa_data, ETH_ALEN); 244 eth_hw_addr_set(ifp->ndev, ifp->mac_addr); 245 } 246 return err; 247 } 248 249 static void brcmf_netdev_set_multicast_list(struct net_device *ndev) 250 { 251 struct brcmf_if *ifp = netdev_priv(ndev); 252 253 schedule_work(&ifp->multicast_work); 254 } 255 256 /** 257 * brcmf_skb_is_iapp - checks if skb is an IAPP packet 258 * 259 * @skb: skb to check 260 */ 261 static bool brcmf_skb_is_iapp(struct sk_buff *skb) 262 { 263 static const u8 iapp_l2_update_packet[6] __aligned(2) = { 264 0x00, 0x01, 0xaf, 0x81, 0x01, 0x00, 265 }; 266 unsigned char *eth_data; 267 #if !defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) 268 const u16 *a, *b; 269 #endif 270 271 if (skb->len - skb->mac_len != 6 || 272 !is_multicast_ether_addr(eth_hdr(skb)->h_dest)) 273 return false; 274 275 eth_data = skb_mac_header(skb) + ETH_HLEN; 276 #if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) 277 return !(((*(const u32 *)eth_data) ^ (*(const u32 *)iapp_l2_update_packet)) | 278 ((*(const u16 *)(eth_data + 4)) ^ (*(const u16 *)(iapp_l2_update_packet + 4)))); 279 #else 280 a = (const u16 *)eth_data; 281 b = (const u16 *)iapp_l2_update_packet; 282 283 return !((a[0] ^ b[0]) | (a[1] ^ b[1]) | (a[2] ^ b[2])); 284 #endif 285 } 286 287 static netdev_tx_t brcmf_netdev_start_xmit(struct sk_buff *skb, 288 struct net_device *ndev) 289 { 290 int ret; 291 struct brcmf_if *ifp = netdev_priv(ndev); 292 struct brcmf_pub *drvr = ifp->drvr; 293 struct ethhdr *eh; 294 int head_delta; 295 unsigned int tx_bytes = skb->len; 296 297 brcmf_dbg(DATA, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx); 298 299 /* Can the device send data? */ 300 if (drvr->bus_if->state != BRCMF_BUS_UP) { 301 bphy_err(drvr, "xmit rejected state=%d\n", drvr->bus_if->state); 302 netif_stop_queue(ndev); 303 dev_kfree_skb(skb); 304 ret = -ENODEV; 305 goto done; 306 } 307 308 /* Some recent Broadcom's firmwares disassociate STA when they receive 309 * an 802.11f ADD frame. This behavior can lead to a local DoS security 310 * issue. Attacker may trigger disassociation of any STA by sending a 311 * proper Ethernet frame to the wireless interface. 312 * 313 * Moreover this feature may break AP interfaces in some specific 314 * setups. This applies e.g. to the bridge with hairpin mode enabled and 315 * IFLA_BRPORT_MCAST_TO_UCAST set. IAPP packet generated by a firmware 316 * will get passed back to the wireless interface and cause immediate 317 * disassociation of a just-connected STA. 318 */ 319 if (!drvr->settings->iapp && brcmf_skb_is_iapp(skb)) { 320 dev_kfree_skb(skb); 321 ret = -EINVAL; 322 goto done; 323 } 324 325 /* Make sure there's enough writeable headroom */ 326 if (skb_headroom(skb) < drvr->hdrlen || skb_header_cloned(skb)) { 327 head_delta = max_t(int, drvr->hdrlen - skb_headroom(skb), 0); 328 329 brcmf_dbg(INFO, "%s: insufficient headroom (%d)\n", 330 brcmf_ifname(ifp), head_delta); 331 atomic_inc(&drvr->bus_if->stats.pktcowed); 332 ret = pskb_expand_head(skb, ALIGN(head_delta, NET_SKB_PAD), 0, 333 GFP_ATOMIC); 334 if (ret < 0) { 335 bphy_err(drvr, "%s: failed to expand headroom\n", 336 brcmf_ifname(ifp)); 337 atomic_inc(&drvr->bus_if->stats.pktcow_failed); 338 goto done; 339 } 340 } 341 342 /* validate length for ether packet */ 343 if (skb->len < sizeof(*eh)) { 344 ret = -EINVAL; 345 dev_kfree_skb(skb); 346 goto done; 347 } 348 349 eh = (struct ethhdr *)(skb->data); 350 351 if (eh->h_proto == htons(ETH_P_PAE)) 352 atomic_inc(&ifp->pend_8021x_cnt); 353 354 /* determine the priority */ 355 if ((skb->priority == 0) || (skb->priority > 7)) 356 skb->priority = cfg80211_classify8021d(skb, NULL); 357 358 /* set pacing shift for packet aggregation */ 359 sk_pacing_shift_update(skb->sk, 8); 360 361 ret = brcmf_proto_tx_queue_data(drvr, ifp->ifidx, skb); 362 if (ret < 0) 363 brcmf_txfinalize(ifp, skb, false); 364 365 done: 366 if (ret) { 367 ndev->stats.tx_dropped++; 368 } else { 369 ndev->stats.tx_packets++; 370 ndev->stats.tx_bytes += tx_bytes; 371 } 372 373 /* Return ok: we always eat the packet */ 374 return NETDEV_TX_OK; 375 } 376 377 void brcmf_txflowblock_if(struct brcmf_if *ifp, 378 enum brcmf_netif_stop_reason reason, bool state) 379 { 380 unsigned long flags; 381 382 if (!ifp || !ifp->ndev) 383 return; 384 385 brcmf_dbg(TRACE, "enter: bsscfgidx=%d stop=0x%X reason=%d state=%d\n", 386 ifp->bsscfgidx, ifp->netif_stop, reason, state); 387 388 spin_lock_irqsave(&ifp->netif_stop_lock, flags); 389 if (state) { 390 if (!ifp->netif_stop) 391 netif_stop_queue(ifp->ndev); 392 ifp->netif_stop |= reason; 393 } else { 394 ifp->netif_stop &= ~reason; 395 if (!ifp->netif_stop) 396 netif_wake_queue(ifp->ndev); 397 } 398 spin_unlock_irqrestore(&ifp->netif_stop_lock, flags); 399 } 400 401 void brcmf_netif_rx(struct brcmf_if *ifp, struct sk_buff *skb) 402 { 403 /* Most of Broadcom's firmwares send 802.11f ADD frame every time a new 404 * STA connects to the AP interface. This is an obsoleted standard most 405 * users don't use, so don't pass these frames up unless requested. 406 */ 407 if (!ifp->drvr->settings->iapp && brcmf_skb_is_iapp(skb)) { 408 brcmu_pkt_buf_free_skb(skb); 409 return; 410 } 411 412 if (skb->pkt_type == PACKET_MULTICAST) 413 ifp->ndev->stats.multicast++; 414 415 if (!(ifp->ndev->flags & IFF_UP)) { 416 brcmu_pkt_buf_free_skb(skb); 417 return; 418 } 419 420 ifp->ndev->stats.rx_bytes += skb->len; 421 ifp->ndev->stats.rx_packets++; 422 423 brcmf_dbg(DATA, "rx proto=0x%X\n", ntohs(skb->protocol)); 424 netif_rx(skb); 425 } 426 427 void brcmf_netif_mon_rx(struct brcmf_if *ifp, struct sk_buff *skb) 428 { 429 if (brcmf_feat_is_enabled(ifp, BRCMF_FEAT_MONITOR_FMT_RADIOTAP)) { 430 /* Do nothing */ 431 } else if (brcmf_feat_is_enabled(ifp, BRCMF_FEAT_MONITOR_FMT_HW_RX_HDR)) { 432 struct wlc_d11rxhdr *wlc_rxhdr = (struct wlc_d11rxhdr *)skb->data; 433 struct ieee80211_radiotap_header *radiotap; 434 unsigned int offset; 435 u16 RxStatus1; 436 437 RxStatus1 = le16_to_cpu(wlc_rxhdr->rxhdr.RxStatus1); 438 439 offset = sizeof(struct wlc_d11rxhdr); 440 /* MAC inserts 2 pad bytes for a4 headers or QoS or A-MSDU 441 * subframes 442 */ 443 if (RxStatus1 & RXS_PBPRES) 444 offset += 2; 445 offset += D11_PHY_HDR_LEN; 446 447 skb_pull(skb, offset); 448 449 /* TODO: use RX header to fill some radiotap data */ 450 radiotap = skb_push(skb, sizeof(*radiotap)); 451 memset(radiotap, 0, sizeof(*radiotap)); 452 radiotap->it_len = cpu_to_le16(sizeof(*radiotap)); 453 454 /* TODO: 4 bytes with receive status? */ 455 skb->len -= 4; 456 } else { 457 struct ieee80211_radiotap_header *radiotap; 458 459 /* TODO: use RX status to fill some radiotap data */ 460 radiotap = skb_push(skb, sizeof(*radiotap)); 461 memset(radiotap, 0, sizeof(*radiotap)); 462 radiotap->it_len = cpu_to_le16(sizeof(*radiotap)); 463 464 /* TODO: 4 bytes with receive status? */ 465 skb->len -= 4; 466 } 467 468 skb->dev = ifp->ndev; 469 skb_reset_mac_header(skb); 470 skb->pkt_type = PACKET_OTHERHOST; 471 skb->protocol = htons(ETH_P_802_2); 472 473 brcmf_netif_rx(ifp, skb); 474 } 475 476 static int brcmf_rx_hdrpull(struct brcmf_pub *drvr, struct sk_buff *skb, 477 struct brcmf_if **ifp) 478 { 479 int ret; 480 481 /* process and remove protocol-specific header */ 482 ret = brcmf_proto_hdrpull(drvr, true, skb, ifp); 483 484 if (ret || !(*ifp) || !(*ifp)->ndev) { 485 if (ret != -ENODATA && *ifp && (*ifp)->ndev) 486 (*ifp)->ndev->stats.rx_errors++; 487 brcmu_pkt_buf_free_skb(skb); 488 return -ENODATA; 489 } 490 491 skb->protocol = eth_type_trans(skb, (*ifp)->ndev); 492 return 0; 493 } 494 495 void brcmf_rx_frame(struct device *dev, struct sk_buff *skb, bool handle_event, 496 bool inirq) 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 gfp_t gfp = inirq ? GFP_ATOMIC : GFP_KERNEL; 513 514 brcmf_fweh_process_skb(ifp->drvr, skb, 515 BCMILCP_SUBTYPE_VENDOR_LONG, gfp); 516 } 517 brcmf_netif_rx(ifp, skb); 518 } 519 } 520 521 void brcmf_rx_event(struct device *dev, struct sk_buff *skb) 522 { 523 struct brcmf_if *ifp; 524 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 525 struct brcmf_pub *drvr = bus_if->drvr; 526 527 brcmf_dbg(EVENT, "Enter: %s: rxp=%p\n", dev_name(dev), skb); 528 529 if (brcmf_rx_hdrpull(drvr, skb, &ifp)) 530 return; 531 532 brcmf_fweh_process_skb(ifp->drvr, skb, 0, GFP_KERNEL); 533 brcmu_pkt_buf_free_skb(skb); 534 } 535 536 void brcmf_txfinalize(struct brcmf_if *ifp, struct sk_buff *txp, bool success) 537 { 538 struct ethhdr *eh; 539 u16 type; 540 541 eh = (struct ethhdr *)(txp->data); 542 type = ntohs(eh->h_proto); 543 544 if (type == ETH_P_PAE) { 545 atomic_dec(&ifp->pend_8021x_cnt); 546 if (waitqueue_active(&ifp->pend_8021x_wait)) 547 wake_up(&ifp->pend_8021x_wait); 548 } 549 550 if (!success) 551 ifp->ndev->stats.tx_errors++; 552 553 brcmu_pkt_buf_free_skb(txp); 554 } 555 556 static void brcmf_ethtool_get_drvinfo(struct net_device *ndev, 557 struct ethtool_drvinfo *info) 558 { 559 struct brcmf_if *ifp = netdev_priv(ndev); 560 struct brcmf_pub *drvr = ifp->drvr; 561 char drev[BRCMU_DOTREV_LEN] = "n/a"; 562 563 if (drvr->revinfo.result == 0) 564 brcmu_dotrev_str(drvr->revinfo.driverrev, drev); 565 strscpy(info->driver, KBUILD_MODNAME, sizeof(info->driver)); 566 strscpy(info->version, drev, sizeof(info->version)); 567 strscpy(info->fw_version, drvr->fwver, sizeof(info->fw_version)); 568 strscpy(info->bus_info, dev_name(drvr->bus_if->dev), 569 sizeof(info->bus_info)); 570 } 571 572 static const struct ethtool_ops brcmf_ethtool_ops = { 573 .get_drvinfo = brcmf_ethtool_get_drvinfo, 574 }; 575 576 static int brcmf_netdev_stop(struct net_device *ndev) 577 { 578 struct brcmf_if *ifp = netdev_priv(ndev); 579 580 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx); 581 582 brcmf_cfg80211_down(ndev); 583 584 brcmf_net_setcarrier(ifp, false); 585 586 return 0; 587 } 588 589 static int brcmf_netdev_open(struct net_device *ndev) 590 { 591 struct brcmf_if *ifp = netdev_priv(ndev); 592 struct brcmf_pub *drvr = ifp->drvr; 593 struct brcmf_bus *bus_if = drvr->bus_if; 594 u32 toe_ol; 595 596 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx); 597 598 /* If bus is not ready, can't continue */ 599 if (bus_if->state != BRCMF_BUS_UP) { 600 bphy_err(drvr, "failed bus is not ready\n"); 601 return -EAGAIN; 602 } 603 604 atomic_set(&ifp->pend_8021x_cnt, 0); 605 606 /* Get current TOE mode from dongle */ 607 if (brcmf_fil_iovar_int_get(ifp, "toe_ol", &toe_ol) >= 0 608 && (toe_ol & TOE_TX_CSUM_OL) != 0) 609 ndev->features |= NETIF_F_IP_CSUM; 610 else 611 ndev->features &= ~NETIF_F_IP_CSUM; 612 613 if (brcmf_cfg80211_up(ndev)) { 614 bphy_err(drvr, "failed to bring up cfg80211\n"); 615 return -EIO; 616 } 617 618 /* Clear, carrier, set when connected or AP mode. */ 619 netif_carrier_off(ndev); 620 return 0; 621 } 622 623 static const struct net_device_ops brcmf_netdev_ops_pri = { 624 .ndo_open = brcmf_netdev_open, 625 .ndo_stop = brcmf_netdev_stop, 626 .ndo_start_xmit = brcmf_netdev_start_xmit, 627 .ndo_set_mac_address = brcmf_netdev_set_mac_address, 628 .ndo_set_rx_mode = brcmf_netdev_set_multicast_list 629 }; 630 631 int brcmf_net_attach(struct brcmf_if *ifp, bool locked) 632 { 633 struct brcmf_pub *drvr = ifp->drvr; 634 struct net_device *ndev; 635 s32 err; 636 637 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d mac=%pM\n", ifp->bsscfgidx, 638 ifp->mac_addr); 639 ndev = ifp->ndev; 640 641 /* set appropriate operations */ 642 ndev->netdev_ops = &brcmf_netdev_ops_pri; 643 644 ndev->needed_headroom += drvr->hdrlen; 645 ndev->ethtool_ops = &brcmf_ethtool_ops; 646 647 /* set the mac address & netns */ 648 eth_hw_addr_set(ndev, ifp->mac_addr); 649 dev_net_set(ndev, wiphy_net(cfg_to_wiphy(drvr->config))); 650 651 INIT_WORK(&ifp->multicast_work, _brcmf_set_multicast_list); 652 INIT_WORK(&ifp->ndoffload_work, _brcmf_update_ndtable); 653 654 if (locked) 655 err = cfg80211_register_netdevice(ndev); 656 else 657 err = register_netdev(ndev); 658 if (err != 0) { 659 bphy_err(drvr, "couldn't register the net device\n"); 660 goto fail; 661 } 662 663 netif_carrier_off(ndev); 664 665 ndev->priv_destructor = brcmf_cfg80211_free_netdev; 666 brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name); 667 return 0; 668 669 fail: 670 drvr->iflist[ifp->bsscfgidx] = NULL; 671 ndev->netdev_ops = NULL; 672 return -EBADE; 673 } 674 675 void brcmf_net_detach(struct net_device *ndev, bool locked) 676 { 677 if (ndev->reg_state == NETREG_REGISTERED) { 678 if (locked) 679 cfg80211_unregister_netdevice(ndev); 680 else 681 unregister_netdev(ndev); 682 } else { 683 brcmf_cfg80211_free_netdev(ndev); 684 free_netdev(ndev); 685 } 686 } 687 688 static int brcmf_net_mon_open(struct net_device *ndev) 689 { 690 struct brcmf_if *ifp = netdev_priv(ndev); 691 struct brcmf_pub *drvr = ifp->drvr; 692 u32 monitor; 693 int err; 694 695 brcmf_dbg(TRACE, "Enter\n"); 696 697 err = brcmf_fil_cmd_int_get(ifp, BRCMF_C_GET_MONITOR, &monitor); 698 if (err) { 699 bphy_err(drvr, "BRCMF_C_GET_MONITOR error (%d)\n", err); 700 return err; 701 } else if (monitor) { 702 bphy_err(drvr, "Monitor mode is already enabled\n"); 703 return -EEXIST; 704 } 705 706 monitor = 3; 707 err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_MONITOR, monitor); 708 if (err) 709 bphy_err(drvr, "BRCMF_C_SET_MONITOR error (%d)\n", err); 710 711 return err; 712 } 713 714 static int brcmf_net_mon_stop(struct net_device *ndev) 715 { 716 struct brcmf_if *ifp = netdev_priv(ndev); 717 struct brcmf_pub *drvr = ifp->drvr; 718 u32 monitor; 719 int err; 720 721 brcmf_dbg(TRACE, "Enter\n"); 722 723 monitor = 0; 724 err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_MONITOR, monitor); 725 if (err) 726 bphy_err(drvr, "BRCMF_C_SET_MONITOR error (%d)\n", err); 727 728 return err; 729 } 730 731 static netdev_tx_t brcmf_net_mon_start_xmit(struct sk_buff *skb, 732 struct net_device *ndev) 733 { 734 dev_kfree_skb_any(skb); 735 736 return NETDEV_TX_OK; 737 } 738 739 static const struct net_device_ops brcmf_netdev_ops_mon = { 740 .ndo_open = brcmf_net_mon_open, 741 .ndo_stop = brcmf_net_mon_stop, 742 .ndo_start_xmit = brcmf_net_mon_start_xmit, 743 }; 744 745 int brcmf_net_mon_attach(struct brcmf_if *ifp) 746 { 747 struct brcmf_pub *drvr = ifp->drvr; 748 struct net_device *ndev; 749 int err; 750 751 brcmf_dbg(TRACE, "Enter\n"); 752 753 ndev = ifp->ndev; 754 ndev->netdev_ops = &brcmf_netdev_ops_mon; 755 756 err = cfg80211_register_netdevice(ndev); 757 if (err) 758 bphy_err(drvr, "Failed to register %s device\n", ndev->name); 759 760 return err; 761 } 762 763 void brcmf_net_setcarrier(struct brcmf_if *ifp, bool on) 764 { 765 struct net_device *ndev; 766 767 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d carrier=%d\n", ifp->bsscfgidx, 768 on); 769 770 ndev = ifp->ndev; 771 brcmf_txflowblock_if(ifp, BRCMF_NETIF_STOP_REASON_DISCONNECTED, !on); 772 if (on) { 773 if (!netif_carrier_ok(ndev)) 774 netif_carrier_on(ndev); 775 776 } else { 777 if (netif_carrier_ok(ndev)) 778 netif_carrier_off(ndev); 779 } 780 } 781 782 static int brcmf_net_p2p_open(struct net_device *ndev) 783 { 784 brcmf_dbg(TRACE, "Enter\n"); 785 786 return brcmf_cfg80211_up(ndev); 787 } 788 789 static int brcmf_net_p2p_stop(struct net_device *ndev) 790 { 791 brcmf_dbg(TRACE, "Enter\n"); 792 793 return brcmf_cfg80211_down(ndev); 794 } 795 796 static netdev_tx_t brcmf_net_p2p_start_xmit(struct sk_buff *skb, 797 struct net_device *ndev) 798 { 799 if (skb) 800 dev_kfree_skb_any(skb); 801 802 return NETDEV_TX_OK; 803 } 804 805 static const struct net_device_ops brcmf_netdev_ops_p2p = { 806 .ndo_open = brcmf_net_p2p_open, 807 .ndo_stop = brcmf_net_p2p_stop, 808 .ndo_start_xmit = brcmf_net_p2p_start_xmit 809 }; 810 811 static int brcmf_net_p2p_attach(struct brcmf_if *ifp) 812 { 813 struct brcmf_pub *drvr = ifp->drvr; 814 struct net_device *ndev; 815 816 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d mac=%pM\n", ifp->bsscfgidx, 817 ifp->mac_addr); 818 ndev = ifp->ndev; 819 820 ndev->netdev_ops = &brcmf_netdev_ops_p2p; 821 822 /* set the mac address */ 823 eth_hw_addr_set(ndev, ifp->mac_addr); 824 825 if (register_netdev(ndev) != 0) { 826 bphy_err(drvr, "couldn't register the p2p net device\n"); 827 goto fail; 828 } 829 830 brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name); 831 832 return 0; 833 834 fail: 835 ifp->drvr->iflist[ifp->bsscfgidx] = NULL; 836 ndev->netdev_ops = NULL; 837 return -EBADE; 838 } 839 840 struct brcmf_if *brcmf_add_if(struct brcmf_pub *drvr, s32 bsscfgidx, s32 ifidx, 841 bool is_p2pdev, const char *name, u8 *mac_addr) 842 { 843 struct brcmf_if *ifp; 844 struct net_device *ndev; 845 846 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d, ifidx=%d\n", bsscfgidx, ifidx); 847 848 ifp = drvr->iflist[bsscfgidx]; 849 /* 850 * Delete the existing interface before overwriting it 851 * in case we missed the BRCMF_E_IF_DEL event. 852 */ 853 if (ifp) { 854 if (ifidx) { 855 bphy_err(drvr, "ERROR: netdev:%s already exists\n", 856 ifp->ndev->name); 857 netif_stop_queue(ifp->ndev); 858 brcmf_net_detach(ifp->ndev, false); 859 drvr->iflist[bsscfgidx] = NULL; 860 } else { 861 brcmf_dbg(INFO, "netdev:%s ignore IF event\n", 862 ifp->ndev->name); 863 return ERR_PTR(-EINVAL); 864 } 865 } 866 867 if (!drvr->settings->p2p_enable && is_p2pdev) { 868 /* this is P2P_DEVICE interface */ 869 brcmf_dbg(INFO, "allocate non-netdev interface\n"); 870 ifp = kzalloc(sizeof(*ifp), GFP_KERNEL); 871 if (!ifp) 872 return ERR_PTR(-ENOMEM); 873 } else { 874 brcmf_dbg(INFO, "allocate netdev interface\n"); 875 /* Allocate netdev, including space for private structure */ 876 ndev = alloc_netdev(sizeof(*ifp), is_p2pdev ? "p2p%d" : name, 877 NET_NAME_UNKNOWN, ether_setup); 878 if (!ndev) 879 return ERR_PTR(-ENOMEM); 880 881 ndev->needs_free_netdev = true; 882 ifp = netdev_priv(ndev); 883 ifp->ndev = ndev; 884 /* store mapping ifidx to bsscfgidx */ 885 if (drvr->if2bss[ifidx] == BRCMF_BSSIDX_INVALID) 886 drvr->if2bss[ifidx] = bsscfgidx; 887 } 888 889 ifp->drvr = drvr; 890 drvr->iflist[bsscfgidx] = ifp; 891 ifp->ifidx = ifidx; 892 ifp->bsscfgidx = bsscfgidx; 893 894 init_waitqueue_head(&ifp->pend_8021x_wait); 895 spin_lock_init(&ifp->netif_stop_lock); 896 897 if (mac_addr != NULL) 898 memcpy(ifp->mac_addr, mac_addr, ETH_ALEN); 899 900 brcmf_dbg(TRACE, " ==== pid:%x, if:%s (%pM) created ===\n", 901 current->pid, name, ifp->mac_addr); 902 903 return ifp; 904 } 905 906 static void brcmf_del_if(struct brcmf_pub *drvr, s32 bsscfgidx, 907 bool locked) 908 { 909 struct brcmf_if *ifp; 910 int ifidx; 911 912 ifp = drvr->iflist[bsscfgidx]; 913 if (!ifp) { 914 bphy_err(drvr, "Null interface, bsscfgidx=%d\n", bsscfgidx); 915 return; 916 } 917 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d, ifidx=%d\n", bsscfgidx, 918 ifp->ifidx); 919 ifidx = ifp->ifidx; 920 921 if (ifp->ndev) { 922 if (bsscfgidx == 0) { 923 if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) { 924 rtnl_lock(); 925 brcmf_netdev_stop(ifp->ndev); 926 rtnl_unlock(); 927 } 928 } else { 929 netif_stop_queue(ifp->ndev); 930 } 931 932 if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) { 933 cancel_work_sync(&ifp->multicast_work); 934 cancel_work_sync(&ifp->ndoffload_work); 935 } 936 brcmf_net_detach(ifp->ndev, locked); 937 } else { 938 /* Only p2p device interfaces which get dynamically created 939 * end up here. In this case the p2p module should be informed 940 * about the removal of the interface within the firmware. If 941 * not then p2p commands towards the firmware will cause some 942 * serious troublesome side effects. The p2p module will clean 943 * up the ifp if needed. 944 */ 945 brcmf_p2p_ifp_removed(ifp, locked); 946 kfree(ifp); 947 } 948 949 drvr->iflist[bsscfgidx] = NULL; 950 if (drvr->if2bss[ifidx] == bsscfgidx) 951 drvr->if2bss[ifidx] = BRCMF_BSSIDX_INVALID; 952 } 953 954 void brcmf_remove_interface(struct brcmf_if *ifp, bool locked) 955 { 956 if (!ifp || WARN_ON(ifp->drvr->iflist[ifp->bsscfgidx] != ifp)) 957 return; 958 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d, ifidx=%d\n", ifp->bsscfgidx, 959 ifp->ifidx); 960 brcmf_proto_del_if(ifp->drvr, ifp); 961 brcmf_del_if(ifp->drvr, ifp->bsscfgidx, locked); 962 } 963 964 static int brcmf_psm_watchdog_notify(struct brcmf_if *ifp, 965 const struct brcmf_event_msg *evtmsg, 966 void *data) 967 { 968 struct brcmf_pub *drvr = ifp->drvr; 969 int err; 970 971 brcmf_dbg(TRACE, "enter: bsscfgidx=%d\n", ifp->bsscfgidx); 972 973 bphy_err(drvr, "PSM's watchdog has fired!\n"); 974 975 err = brcmf_debug_create_memdump(ifp->drvr->bus_if, data, 976 evtmsg->datalen); 977 if (err) 978 bphy_err(drvr, "Failed to get memory dump, %d\n", err); 979 980 return err; 981 } 982 983 #ifdef CONFIG_INET 984 #define ARPOL_MAX_ENTRIES 8 985 static int brcmf_inetaddr_changed(struct notifier_block *nb, 986 unsigned long action, void *data) 987 { 988 struct brcmf_pub *drvr = container_of(nb, struct brcmf_pub, 989 inetaddr_notifier); 990 struct in_ifaddr *ifa = data; 991 struct net_device *ndev = ifa->ifa_dev->dev; 992 struct brcmf_if *ifp; 993 int idx, i, ret; 994 u32 val; 995 __be32 addr_table[ARPOL_MAX_ENTRIES] = {0}; 996 997 /* Find out if the notification is meant for us */ 998 for (idx = 0; idx < BRCMF_MAX_IFS; idx++) { 999 ifp = drvr->iflist[idx]; 1000 if (ifp && ifp->ndev == ndev) 1001 break; 1002 if (idx == BRCMF_MAX_IFS - 1) 1003 return NOTIFY_DONE; 1004 } 1005 1006 /* check if arp offload is supported */ 1007 ret = brcmf_fil_iovar_int_get(ifp, "arpoe", &val); 1008 if (ret) 1009 return NOTIFY_OK; 1010 1011 /* old version only support primary index */ 1012 ret = brcmf_fil_iovar_int_get(ifp, "arp_version", &val); 1013 if (ret) 1014 val = 1; 1015 if (val == 1) 1016 ifp = drvr->iflist[0]; 1017 1018 /* retrieve the table from firmware */ 1019 ret = brcmf_fil_iovar_data_get(ifp, "arp_hostip", addr_table, 1020 sizeof(addr_table)); 1021 if (ret) { 1022 bphy_err(drvr, "fail to get arp ip table err:%d\n", ret); 1023 return NOTIFY_OK; 1024 } 1025 1026 for (i = 0; i < ARPOL_MAX_ENTRIES; i++) 1027 if (ifa->ifa_address == addr_table[i]) 1028 break; 1029 1030 switch (action) { 1031 case NETDEV_UP: 1032 if (i == ARPOL_MAX_ENTRIES) { 1033 brcmf_dbg(TRACE, "add %pI4 to arp table\n", 1034 &ifa->ifa_address); 1035 /* set it directly */ 1036 ret = brcmf_fil_iovar_data_set(ifp, "arp_hostip", 1037 &ifa->ifa_address, sizeof(ifa->ifa_address)); 1038 if (ret) 1039 bphy_err(drvr, "add arp ip err %d\n", ret); 1040 } 1041 break; 1042 case NETDEV_DOWN: 1043 if (i < ARPOL_MAX_ENTRIES) { 1044 addr_table[i] = 0; 1045 brcmf_dbg(TRACE, "remove %pI4 from arp table\n", 1046 &ifa->ifa_address); 1047 /* clear the table in firmware */ 1048 ret = brcmf_fil_iovar_data_set(ifp, "arp_hostip_clear", 1049 NULL, 0); 1050 if (ret) { 1051 bphy_err(drvr, "fail to clear arp ip table err:%d\n", 1052 ret); 1053 return NOTIFY_OK; 1054 } 1055 for (i = 0; i < ARPOL_MAX_ENTRIES; i++) { 1056 if (addr_table[i] == 0) 1057 continue; 1058 ret = brcmf_fil_iovar_data_set(ifp, "arp_hostip", 1059 &addr_table[i], 1060 sizeof(addr_table[i])); 1061 if (ret) 1062 bphy_err(drvr, "add arp ip err %d\n", 1063 ret); 1064 } 1065 } 1066 break; 1067 default: 1068 break; 1069 } 1070 1071 return NOTIFY_OK; 1072 } 1073 #endif 1074 1075 #if IS_ENABLED(CONFIG_IPV6) 1076 static int brcmf_inet6addr_changed(struct notifier_block *nb, 1077 unsigned long action, void *data) 1078 { 1079 struct brcmf_pub *drvr = container_of(nb, struct brcmf_pub, 1080 inet6addr_notifier); 1081 struct inet6_ifaddr *ifa = data; 1082 struct brcmf_if *ifp; 1083 int i; 1084 struct in6_addr *table; 1085 1086 /* Only handle primary interface */ 1087 ifp = drvr->iflist[0]; 1088 if (!ifp) 1089 return NOTIFY_DONE; 1090 if (ifp->ndev != ifa->idev->dev) 1091 return NOTIFY_DONE; 1092 1093 table = ifp->ipv6_addr_tbl; 1094 for (i = 0; i < NDOL_MAX_ENTRIES; i++) 1095 if (ipv6_addr_equal(&ifa->addr, &table[i])) 1096 break; 1097 1098 switch (action) { 1099 case NETDEV_UP: 1100 if (i == NDOL_MAX_ENTRIES) { 1101 if (ifp->ipv6addr_idx < NDOL_MAX_ENTRIES) { 1102 table[ifp->ipv6addr_idx++] = ifa->addr; 1103 } else { 1104 for (i = 0; i < NDOL_MAX_ENTRIES - 1; i++) 1105 table[i] = table[i + 1]; 1106 table[NDOL_MAX_ENTRIES - 1] = ifa->addr; 1107 } 1108 } 1109 break; 1110 case NETDEV_DOWN: 1111 if (i < NDOL_MAX_ENTRIES) { 1112 for (; i < ifp->ipv6addr_idx - 1; i++) 1113 table[i] = table[i + 1]; 1114 memset(&table[i], 0, sizeof(table[i])); 1115 ifp->ipv6addr_idx--; 1116 } 1117 break; 1118 default: 1119 break; 1120 } 1121 1122 schedule_work(&ifp->ndoffload_work); 1123 1124 return NOTIFY_OK; 1125 } 1126 #endif 1127 1128 static int brcmf_revinfo_read(struct seq_file *s, void *data) 1129 { 1130 struct brcmf_bus *bus_if = dev_get_drvdata(s->private); 1131 struct brcmf_rev_info *ri = &bus_if->drvr->revinfo; 1132 char drev[BRCMU_DOTREV_LEN]; 1133 char brev[BRCMU_BOARDREV_LEN]; 1134 1135 seq_printf(s, "vendorid: 0x%04x\n", ri->vendorid); 1136 seq_printf(s, "deviceid: 0x%04x\n", ri->deviceid); 1137 seq_printf(s, "radiorev: %s\n", brcmu_dotrev_str(ri->radiorev, drev)); 1138 seq_printf(s, "chip: %s\n", ri->chipname); 1139 seq_printf(s, "chippkg: %u\n", ri->chippkg); 1140 seq_printf(s, "corerev: %u\n", ri->corerev); 1141 seq_printf(s, "boardid: 0x%04x\n", ri->boardid); 1142 seq_printf(s, "boardvendor: 0x%04x\n", ri->boardvendor); 1143 seq_printf(s, "boardrev: %s\n", brcmu_boardrev_str(ri->boardrev, brev)); 1144 seq_printf(s, "driverrev: %s\n", brcmu_dotrev_str(ri->driverrev, drev)); 1145 seq_printf(s, "ucoderev: %u\n", ri->ucoderev); 1146 seq_printf(s, "bus: %u\n", ri->bus); 1147 seq_printf(s, "phytype: %u\n", ri->phytype); 1148 seq_printf(s, "phyrev: %u\n", ri->phyrev); 1149 seq_printf(s, "anarev: %u\n", ri->anarev); 1150 seq_printf(s, "nvramrev: %08x\n", ri->nvramrev); 1151 1152 seq_printf(s, "clmver: %s\n", bus_if->drvr->clmver); 1153 1154 return 0; 1155 } 1156 1157 static void brcmf_core_bus_reset(struct work_struct *work) 1158 { 1159 struct brcmf_pub *drvr = container_of(work, struct brcmf_pub, 1160 bus_reset); 1161 1162 brcmf_bus_reset(drvr->bus_if); 1163 } 1164 1165 static ssize_t bus_reset_write(struct file *file, const char __user *user_buf, 1166 size_t count, loff_t *ppos) 1167 { 1168 struct brcmf_pub *drvr = file->private_data; 1169 u8 value; 1170 1171 if (kstrtou8_from_user(user_buf, count, 0, &value)) 1172 return -EINVAL; 1173 1174 if (value != 1) 1175 return -EINVAL; 1176 1177 schedule_work(&drvr->bus_reset); 1178 1179 return count; 1180 } 1181 1182 static const struct file_operations bus_reset_fops = { 1183 .open = simple_open, 1184 .llseek = no_llseek, 1185 .write = bus_reset_write, 1186 }; 1187 1188 static int brcmf_bus_started(struct brcmf_pub *drvr, struct cfg80211_ops *ops) 1189 { 1190 int ret = -1; 1191 struct brcmf_bus *bus_if = drvr->bus_if; 1192 struct brcmf_if *ifp; 1193 struct brcmf_if *p2p_ifp; 1194 1195 brcmf_dbg(TRACE, "\n"); 1196 1197 /* add primary networking interface */ 1198 ifp = brcmf_add_if(drvr, 0, 0, false, "wlan%d", 1199 is_valid_ether_addr(drvr->settings->mac) ? drvr->settings->mac : NULL); 1200 if (IS_ERR(ifp)) 1201 return PTR_ERR(ifp); 1202 1203 p2p_ifp = NULL; 1204 1205 /* signal bus ready */ 1206 brcmf_bus_change_state(bus_if, BRCMF_BUS_UP); 1207 1208 /* do bus specific preinit here */ 1209 ret = brcmf_bus_preinit(bus_if); 1210 if (ret < 0) 1211 goto fail; 1212 1213 /* Bus is ready, do any initialization */ 1214 ret = brcmf_c_preinit_dcmds(ifp); 1215 if (ret < 0) 1216 goto fail; 1217 1218 brcmf_feat_attach(drvr); 1219 1220 ret = brcmf_proto_init_done(drvr); 1221 if (ret < 0) 1222 goto fail; 1223 1224 brcmf_proto_add_if(drvr, ifp); 1225 1226 drvr->config = brcmf_cfg80211_attach(drvr, ops, 1227 drvr->settings->p2p_enable); 1228 if (drvr->config == NULL) { 1229 ret = -ENOMEM; 1230 goto fail; 1231 } 1232 1233 ret = brcmf_net_attach(ifp, false); 1234 1235 if ((!ret) && (drvr->settings->p2p_enable)) { 1236 p2p_ifp = drvr->iflist[1]; 1237 if (p2p_ifp) 1238 ret = brcmf_net_p2p_attach(p2p_ifp); 1239 } 1240 1241 if (ret) 1242 goto fail; 1243 1244 #ifdef CONFIG_INET 1245 drvr->inetaddr_notifier.notifier_call = brcmf_inetaddr_changed; 1246 ret = register_inetaddr_notifier(&drvr->inetaddr_notifier); 1247 if (ret) 1248 goto fail; 1249 1250 #if IS_ENABLED(CONFIG_IPV6) 1251 drvr->inet6addr_notifier.notifier_call = brcmf_inet6addr_changed; 1252 ret = register_inet6addr_notifier(&drvr->inet6addr_notifier); 1253 if (ret) { 1254 unregister_inetaddr_notifier(&drvr->inetaddr_notifier); 1255 goto fail; 1256 } 1257 #endif 1258 #endif /* CONFIG_INET */ 1259 1260 INIT_WORK(&drvr->bus_reset, brcmf_core_bus_reset); 1261 1262 /* populate debugfs */ 1263 brcmf_debugfs_add_entry(drvr, "revinfo", brcmf_revinfo_read); 1264 debugfs_create_file("reset", 0600, brcmf_debugfs_get_devdir(drvr), drvr, 1265 &bus_reset_fops); 1266 brcmf_feat_debugfs_create(drvr); 1267 brcmf_proto_debugfs_create(drvr); 1268 brcmf_bus_debugfs_create(bus_if); 1269 1270 return 0; 1271 1272 fail: 1273 bphy_err(drvr, "failed: %d\n", ret); 1274 if (drvr->config) { 1275 brcmf_cfg80211_detach(drvr->config); 1276 drvr->config = NULL; 1277 } 1278 brcmf_net_detach(ifp->ndev, false); 1279 if (p2p_ifp) 1280 brcmf_net_detach(p2p_ifp->ndev, false); 1281 drvr->iflist[0] = NULL; 1282 drvr->iflist[1] = NULL; 1283 if (drvr->settings->ignore_probe_fail) 1284 ret = 0; 1285 1286 return ret; 1287 } 1288 1289 int brcmf_alloc(struct device *dev, struct brcmf_mp_device *settings) 1290 { 1291 struct wiphy *wiphy; 1292 struct cfg80211_ops *ops; 1293 struct brcmf_pub *drvr = NULL; 1294 1295 brcmf_dbg(TRACE, "Enter\n"); 1296 1297 ops = brcmf_cfg80211_get_ops(settings); 1298 if (!ops) 1299 return -ENOMEM; 1300 1301 wiphy = wiphy_new(ops, sizeof(*drvr)); 1302 if (!wiphy) { 1303 kfree(ops); 1304 return -ENOMEM; 1305 } 1306 1307 set_wiphy_dev(wiphy, dev); 1308 drvr = wiphy_priv(wiphy); 1309 drvr->wiphy = wiphy; 1310 drvr->ops = ops; 1311 drvr->bus_if = dev_get_drvdata(dev); 1312 drvr->bus_if->drvr = drvr; 1313 drvr->settings = settings; 1314 1315 return 0; 1316 } 1317 1318 int brcmf_attach(struct device *dev) 1319 { 1320 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1321 struct brcmf_pub *drvr = bus_if->drvr; 1322 int ret = 0; 1323 int i; 1324 1325 brcmf_dbg(TRACE, "Enter\n"); 1326 1327 for (i = 0; i < ARRAY_SIZE(drvr->if2bss); i++) 1328 drvr->if2bss[i] = BRCMF_BSSIDX_INVALID; 1329 1330 mutex_init(&drvr->proto_block); 1331 1332 /* Link to bus module */ 1333 drvr->hdrlen = 0; 1334 1335 /* Attach and link in the protocol */ 1336 ret = brcmf_proto_attach(drvr); 1337 if (ret != 0) { 1338 bphy_err(drvr, "brcmf_prot_attach failed\n"); 1339 goto fail; 1340 } 1341 1342 /* Attach to events important for core code */ 1343 brcmf_fweh_register(drvr, BRCMF_E_PSM_WATCHDOG, 1344 brcmf_psm_watchdog_notify); 1345 1346 /* attach firmware event handler */ 1347 brcmf_fweh_attach(drvr); 1348 1349 ret = brcmf_bus_started(drvr, drvr->ops); 1350 if (ret != 0) { 1351 bphy_err(drvr, "dongle is not responding: err=%d\n", ret); 1352 goto fail; 1353 } 1354 1355 return 0; 1356 1357 fail: 1358 brcmf_detach(dev); 1359 1360 return ret; 1361 } 1362 1363 void brcmf_bus_add_txhdrlen(struct device *dev, uint len) 1364 { 1365 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1366 struct brcmf_pub *drvr = bus_if->drvr; 1367 1368 if (drvr) { 1369 drvr->hdrlen += len; 1370 } 1371 } 1372 1373 void brcmf_dev_reset(struct device *dev) 1374 { 1375 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1376 struct brcmf_pub *drvr = bus_if->drvr; 1377 1378 if (drvr == NULL) 1379 return; 1380 1381 if (drvr->iflist[0]) 1382 brcmf_fil_cmd_int_set(drvr->iflist[0], BRCMF_C_TERMINATED, 1); 1383 } 1384 1385 void brcmf_dev_coredump(struct device *dev) 1386 { 1387 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1388 1389 if (brcmf_debug_create_memdump(bus_if, NULL, 0) < 0) 1390 brcmf_dbg(TRACE, "failed to create coredump\n"); 1391 } 1392 1393 void brcmf_fw_crashed(struct device *dev) 1394 { 1395 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1396 struct brcmf_pub *drvr = bus_if->drvr; 1397 1398 bphy_err(drvr, "Firmware has halted or crashed\n"); 1399 1400 brcmf_dev_coredump(dev); 1401 1402 schedule_work(&drvr->bus_reset); 1403 } 1404 1405 void brcmf_detach(struct device *dev) 1406 { 1407 s32 i; 1408 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1409 struct brcmf_pub *drvr = bus_if->drvr; 1410 1411 brcmf_dbg(TRACE, "Enter\n"); 1412 1413 if (drvr == NULL) 1414 return; 1415 1416 #ifdef CONFIG_INET 1417 unregister_inetaddr_notifier(&drvr->inetaddr_notifier); 1418 #endif 1419 1420 #if IS_ENABLED(CONFIG_IPV6) 1421 unregister_inet6addr_notifier(&drvr->inet6addr_notifier); 1422 #endif 1423 1424 brcmf_bus_change_state(bus_if, BRCMF_BUS_DOWN); 1425 /* make sure primary interface removed last */ 1426 for (i = BRCMF_MAX_IFS - 1; i > -1; i--) { 1427 if (drvr->iflist[i]) 1428 brcmf_remove_interface(drvr->iflist[i], false); 1429 } 1430 brcmf_bus_stop(drvr->bus_if); 1431 1432 brcmf_fweh_detach(drvr); 1433 brcmf_proto_detach(drvr); 1434 1435 if (drvr->mon_if) { 1436 brcmf_net_detach(drvr->mon_if->ndev, false); 1437 drvr->mon_if = NULL; 1438 } 1439 1440 if (drvr->config) { 1441 brcmf_p2p_detach(&drvr->config->p2p); 1442 brcmf_cfg80211_detach(drvr->config); 1443 drvr->config = NULL; 1444 } 1445 } 1446 1447 void brcmf_free(struct device *dev) 1448 { 1449 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1450 struct brcmf_pub *drvr = bus_if->drvr; 1451 1452 if (!drvr) 1453 return; 1454 1455 bus_if->drvr = NULL; 1456 1457 kfree(drvr->ops); 1458 1459 wiphy_free(drvr->wiphy); 1460 } 1461 1462 s32 brcmf_iovar_data_set(struct device *dev, char *name, void *data, u32 len) 1463 { 1464 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1465 struct brcmf_if *ifp = bus_if->drvr->iflist[0]; 1466 1467 return brcmf_fil_iovar_data_set(ifp, name, data, len); 1468 } 1469 1470 static int brcmf_get_pend_8021x_cnt(struct brcmf_if *ifp) 1471 { 1472 return atomic_read(&ifp->pend_8021x_cnt); 1473 } 1474 1475 int brcmf_netdev_wait_pend8021x(struct brcmf_if *ifp) 1476 { 1477 struct brcmf_pub *drvr = ifp->drvr; 1478 int err; 1479 1480 err = wait_event_timeout(ifp->pend_8021x_wait, 1481 !brcmf_get_pend_8021x_cnt(ifp), 1482 MAX_WAIT_FOR_8021X_TX); 1483 1484 if (!err) { 1485 bphy_err(drvr, "Timed out waiting for no pending 802.1x packets\n"); 1486 atomic_set(&ifp->pend_8021x_cnt, 0); 1487 } 1488 1489 return !err; 1490 } 1491 1492 void brcmf_bus_change_state(struct brcmf_bus *bus, enum brcmf_bus_state state) 1493 { 1494 struct brcmf_pub *drvr = bus->drvr; 1495 struct net_device *ndev; 1496 int ifidx; 1497 1498 brcmf_dbg(TRACE, "%d -> %d\n", bus->state, state); 1499 1500 if (!drvr) { 1501 brcmf_dbg(INFO, "ignoring transition, bus not attached yet\n"); 1502 return; 1503 } 1504 1505 bus->state = state; 1506 1507 if (state == BRCMF_BUS_UP) { 1508 for (ifidx = 0; ifidx < BRCMF_MAX_IFS; ifidx++) { 1509 if ((drvr->iflist[ifidx]) && 1510 (drvr->iflist[ifidx]->ndev)) { 1511 ndev = drvr->iflist[ifidx]->ndev; 1512 if (netif_queue_stopped(ndev)) 1513 netif_wake_queue(ndev); 1514 } 1515 } 1516 } 1517 } 1518 1519 int __init brcmf_core_init(void) 1520 { 1521 int err; 1522 1523 err = brcmf_sdio_register(); 1524 if (err) 1525 return err; 1526 1527 err = brcmf_usb_register(); 1528 if (err) 1529 goto error_usb_register; 1530 1531 err = brcmf_pcie_register(); 1532 if (err) 1533 goto error_pcie_register; 1534 return 0; 1535 1536 error_pcie_register: 1537 brcmf_usb_exit(); 1538 error_usb_register: 1539 brcmf_sdio_exit(); 1540 return err; 1541 } 1542 1543 void __exit brcmf_core_exit(void) 1544 { 1545 brcmf_sdio_exit(); 1546 brcmf_usb_exit(); 1547 brcmf_pcie_exit(); 1548 } 1549 1550