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 "fwvid.h" 22 #include "debug.h" 23 #include "fwil_types.h" 24 #include "p2p.h" 25 #include "pno.h" 26 #include "cfg80211.h" 27 #include "fwil.h" 28 #include "feature.h" 29 #include "proto.h" 30 #include "pcie.h" 31 #include "common.h" 32 33 #define MAX_WAIT_FOR_8021X_TX msecs_to_jiffies(950) 34 35 #define BRCMF_BSSIDX_INVALID -1 36 37 #define RXS_PBPRES BIT(2) 38 39 #define D11_PHY_HDR_LEN 6 40 41 struct d11rxhdr_le { 42 __le16 RxFrameSize; 43 u16 PAD; 44 __le16 PhyRxStatus_0; 45 __le16 PhyRxStatus_1; 46 __le16 PhyRxStatus_2; 47 __le16 PhyRxStatus_3; 48 __le16 PhyRxStatus_4; 49 __le16 PhyRxStatus_5; 50 __le16 RxStatus1; 51 __le16 RxStatus2; 52 __le16 RxTSFTime; 53 __le16 RxChan; 54 u8 unknown[12]; 55 } __packed; 56 57 struct wlc_d11rxhdr { 58 struct d11rxhdr_le rxhdr; 59 __le32 tsf_l; 60 s8 rssi; 61 s8 rxpwr0; 62 s8 rxpwr1; 63 s8 do_rssi_ma; 64 s8 rxpwr[4]; 65 } __packed; 66 67 char *brcmf_ifname(struct brcmf_if *ifp) 68 { 69 if (!ifp) 70 return "<if_null>"; 71 72 if (ifp->ndev) 73 return ifp->ndev->name; 74 75 return "<if_none>"; 76 } 77 78 struct brcmf_if *brcmf_get_ifp(struct brcmf_pub *drvr, int ifidx) 79 { 80 struct brcmf_if *ifp; 81 s32 bsscfgidx; 82 83 if (ifidx < 0 || ifidx >= BRCMF_MAX_IFS) { 84 bphy_err(drvr, "ifidx %d out of range\n", ifidx); 85 return NULL; 86 } 87 88 ifp = NULL; 89 bsscfgidx = drvr->if2bss[ifidx]; 90 if (bsscfgidx >= 0) 91 ifp = drvr->iflist[bsscfgidx]; 92 93 return ifp; 94 } 95 96 void brcmf_configure_arp_nd_offload(struct brcmf_if *ifp, bool enable) 97 { 98 s32 err; 99 u32 mode; 100 101 if (enable) 102 mode = BRCMF_ARP_OL_AGENT | BRCMF_ARP_OL_PEER_AUTO_REPLY; 103 else 104 mode = 0; 105 106 /* Try to set and enable ARP offload feature, this may fail, then it */ 107 /* is simply not supported and err 0 will be returned */ 108 err = brcmf_fil_iovar_int_set(ifp, "arp_ol", mode); 109 if (err) { 110 brcmf_dbg(TRACE, "failed to set ARP offload mode to 0x%x, err = %d\n", 111 mode, err); 112 } else { 113 err = brcmf_fil_iovar_int_set(ifp, "arpoe", enable); 114 if (err) { 115 brcmf_dbg(TRACE, "failed to configure (%d) ARP offload err = %d\n", 116 enable, err); 117 } else { 118 brcmf_dbg(TRACE, "successfully configured (%d) ARP offload to 0x%x\n", 119 enable, mode); 120 } 121 } 122 123 err = brcmf_fil_iovar_int_set(ifp, "ndoe", enable); 124 if (err) { 125 brcmf_dbg(TRACE, "failed to configure (%d) ND offload err = %d\n", 126 enable, err); 127 } else { 128 brcmf_dbg(TRACE, "successfully configured (%d) ND offload to 0x%x\n", 129 enable, mode); 130 } 131 } 132 133 static void _brcmf_set_multicast_list(struct work_struct *work) 134 { 135 struct brcmf_if *ifp = container_of(work, struct brcmf_if, 136 multicast_work); 137 struct brcmf_pub *drvr = ifp->drvr; 138 struct net_device *ndev; 139 struct netdev_hw_addr *ha; 140 u32 cmd_value, cnt; 141 __le32 cnt_le; 142 char *buf, *bufp; 143 u32 buflen; 144 s32 err; 145 146 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx); 147 148 ndev = ifp->ndev; 149 150 /* Determine initial value of allmulti flag */ 151 cmd_value = (ndev->flags & IFF_ALLMULTI) ? true : false; 152 153 /* Send down the multicast list first. */ 154 cnt = netdev_mc_count(ndev); 155 buflen = sizeof(cnt) + (cnt * ETH_ALEN); 156 buf = kmalloc(buflen, GFP_KERNEL); 157 if (!buf) 158 return; 159 bufp = buf; 160 161 cnt_le = cpu_to_le32(cnt); 162 memcpy(bufp, &cnt_le, sizeof(cnt_le)); 163 bufp += sizeof(cnt_le); 164 165 netdev_for_each_mc_addr(ha, ndev) { 166 if (!cnt) 167 break; 168 memcpy(bufp, ha->addr, ETH_ALEN); 169 bufp += ETH_ALEN; 170 cnt--; 171 } 172 173 err = brcmf_fil_iovar_data_set(ifp, "mcast_list", buf, buflen); 174 if (err < 0) { 175 bphy_err(drvr, "Setting mcast_list failed, %d\n", err); 176 cmd_value = cnt ? true : cmd_value; 177 } 178 179 kfree(buf); 180 181 /* 182 * Now send the allmulti setting. This is based on the setting in the 183 * net_device flags, but might be modified above to be turned on if we 184 * were trying to set some addresses and dongle rejected it... 185 */ 186 err = brcmf_fil_iovar_int_set(ifp, "allmulti", cmd_value); 187 if (err < 0) 188 bphy_err(drvr, "Setting allmulti failed, %d\n", err); 189 190 /*Finally, pick up the PROMISC flag */ 191 cmd_value = (ndev->flags & IFF_PROMISC) ? true : false; 192 err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_PROMISC, cmd_value); 193 if (err < 0) { 194 /* PROMISC unsupported by firmware of older chips */ 195 if (err == -EBADE) 196 bphy_info_once(drvr, "BRCMF_C_SET_PROMISC unsupported\n"); 197 else 198 bphy_err(drvr, "Setting BRCMF_C_SET_PROMISC failed, err=%d\n", 199 err); 200 } 201 brcmf_configure_arp_nd_offload(ifp, !cmd_value); 202 } 203 204 #if IS_ENABLED(CONFIG_IPV6) 205 static void _brcmf_update_ndtable(struct work_struct *work) 206 { 207 struct brcmf_if *ifp = container_of(work, struct brcmf_if, 208 ndoffload_work); 209 struct brcmf_pub *drvr = ifp->drvr; 210 int i, ret; 211 212 /* clear the table in firmware */ 213 ret = brcmf_fil_iovar_data_set(ifp, "nd_hostip_clear", NULL, 0); 214 if (ret) { 215 brcmf_dbg(TRACE, "fail to clear nd ip table err:%d\n", ret); 216 return; 217 } 218 219 for (i = 0; i < ifp->ipv6addr_idx; i++) { 220 ret = brcmf_fil_iovar_data_set(ifp, "nd_hostip", 221 &ifp->ipv6_addr_tbl[i], 222 sizeof(struct in6_addr)); 223 if (ret) 224 bphy_err(drvr, "add nd ip err %d\n", ret); 225 } 226 } 227 #else 228 static void _brcmf_update_ndtable(struct work_struct *work) 229 { 230 } 231 #endif 232 233 static int brcmf_netdev_set_mac_address(struct net_device *ndev, void *addr) 234 { 235 struct brcmf_if *ifp = netdev_priv(ndev); 236 struct sockaddr *sa = (struct sockaddr *)addr; 237 int err; 238 239 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx); 240 241 err = brcmf_c_set_cur_etheraddr(ifp, sa->sa_data); 242 if (err >= 0) { 243 brcmf_dbg(TRACE, "updated to %pM\n", sa->sa_data); 244 memcpy(ifp->mac_addr, sa->sa_data, ETH_ALEN); 245 eth_hw_addr_set(ifp->ndev, ifp->mac_addr); 246 } 247 return err; 248 } 249 250 static void brcmf_netdev_set_multicast_list(struct net_device *ndev) 251 { 252 struct brcmf_if *ifp = netdev_priv(ndev); 253 254 schedule_work(&ifp->multicast_work); 255 } 256 257 /** 258 * brcmf_skb_is_iapp - checks if skb is an IAPP packet 259 * 260 * @skb: skb to check 261 */ 262 static bool brcmf_skb_is_iapp(struct sk_buff *skb) 263 { 264 static const u8 iapp_l2_update_packet[6] __aligned(2) = { 265 0x00, 0x01, 0xaf, 0x81, 0x01, 0x00, 266 }; 267 unsigned char *eth_data; 268 #if !defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) 269 const u16 *a, *b; 270 #endif 271 272 if (skb->len - skb->mac_len != 6 || 273 !is_multicast_ether_addr(eth_hdr(skb)->h_dest)) 274 return false; 275 276 eth_data = skb_mac_header(skb) + ETH_HLEN; 277 #if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) 278 return !(((*(const u32 *)eth_data) ^ (*(const u32 *)iapp_l2_update_packet)) | 279 ((*(const u16 *)(eth_data + 4)) ^ (*(const u16 *)(iapp_l2_update_packet + 4)))); 280 #else 281 a = (const u16 *)eth_data; 282 b = (const u16 *)iapp_l2_update_packet; 283 284 return !((a[0] ^ b[0]) | (a[1] ^ b[1]) | (a[2] ^ b[2])); 285 #endif 286 } 287 288 static netdev_tx_t brcmf_netdev_start_xmit(struct sk_buff *skb, 289 struct net_device *ndev) 290 { 291 int ret; 292 struct brcmf_if *ifp = netdev_priv(ndev); 293 struct brcmf_pub *drvr = ifp->drvr; 294 struct ethhdr *eh; 295 int head_delta; 296 unsigned int tx_bytes = skb->len; 297 298 brcmf_dbg(DATA, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx); 299 300 /* Can the device send data? */ 301 if (drvr->bus_if->state != BRCMF_BUS_UP) { 302 bphy_err(drvr, "xmit rejected state=%d\n", drvr->bus_if->state); 303 netif_stop_queue(ndev); 304 dev_kfree_skb(skb); 305 ret = -ENODEV; 306 goto done; 307 } 308 309 /* Some recent Broadcom's firmwares disassociate STA when they receive 310 * an 802.11f ADD frame. This behavior can lead to a local DoS security 311 * issue. Attacker may trigger disassociation of any STA by sending a 312 * proper Ethernet frame to the wireless interface. 313 * 314 * Moreover this feature may break AP interfaces in some specific 315 * setups. This applies e.g. to the bridge with hairpin mode enabled and 316 * IFLA_BRPORT_MCAST_TO_UCAST set. IAPP packet generated by a firmware 317 * will get passed back to the wireless interface and cause immediate 318 * disassociation of a just-connected STA. 319 */ 320 if (!drvr->settings->iapp && brcmf_skb_is_iapp(skb)) { 321 dev_kfree_skb(skb); 322 ret = -EINVAL; 323 goto done; 324 } 325 326 /* Make sure there's enough writeable headroom */ 327 if (skb_headroom(skb) < drvr->hdrlen || skb_header_cloned(skb)) { 328 head_delta = max_t(int, drvr->hdrlen - skb_headroom(skb), 0); 329 330 brcmf_dbg(INFO, "%s: insufficient headroom (%d)\n", 331 brcmf_ifname(ifp), head_delta); 332 atomic_inc(&drvr->bus_if->stats.pktcowed); 333 ret = pskb_expand_head(skb, ALIGN(head_delta, NET_SKB_PAD), 0, 334 GFP_ATOMIC); 335 if (ret < 0) { 336 bphy_err(drvr, "%s: failed to expand headroom\n", 337 brcmf_ifname(ifp)); 338 atomic_inc(&drvr->bus_if->stats.pktcow_failed); 339 goto done; 340 } 341 } 342 343 /* validate length for ether packet */ 344 if (skb->len < sizeof(*eh)) { 345 ret = -EINVAL; 346 dev_kfree_skb(skb); 347 goto done; 348 } 349 350 eh = (struct ethhdr *)(skb->data); 351 352 if (eh->h_proto == htons(ETH_P_PAE)) 353 atomic_inc(&ifp->pend_8021x_cnt); 354 355 /* determine the priority */ 356 if ((skb->priority == 0) || (skb->priority > 7)) 357 skb->priority = cfg80211_classify8021d(skb, NULL); 358 359 /* set pacing shift for packet aggregation */ 360 sk_pacing_shift_update(skb->sk, 8); 361 362 ret = brcmf_proto_tx_queue_data(drvr, ifp->ifidx, skb); 363 if (ret < 0) 364 brcmf_txfinalize(ifp, skb, false); 365 366 done: 367 if (ret) { 368 ndev->stats.tx_dropped++; 369 } else { 370 ndev->stats.tx_packets++; 371 ndev->stats.tx_bytes += tx_bytes; 372 } 373 374 /* Return ok: we always eat the packet */ 375 return NETDEV_TX_OK; 376 } 377 378 void brcmf_txflowblock_if(struct brcmf_if *ifp, 379 enum brcmf_netif_stop_reason reason, bool state) 380 { 381 unsigned long flags; 382 383 if (!ifp || !ifp->ndev) 384 return; 385 386 brcmf_dbg(TRACE, "enter: bsscfgidx=%d stop=0x%X reason=%d state=%d\n", 387 ifp->bsscfgidx, ifp->netif_stop, reason, state); 388 389 spin_lock_irqsave(&ifp->netif_stop_lock, flags); 390 if (state) { 391 if (!ifp->netif_stop) 392 netif_stop_queue(ifp->ndev); 393 ifp->netif_stop |= reason; 394 } else { 395 ifp->netif_stop &= ~reason; 396 if (!ifp->netif_stop) 397 netif_wake_queue(ifp->ndev); 398 } 399 spin_unlock_irqrestore(&ifp->netif_stop_lock, flags); 400 } 401 402 void brcmf_netif_rx(struct brcmf_if *ifp, struct sk_buff *skb) 403 { 404 /* Most of Broadcom's firmwares send 802.11f ADD frame every time a new 405 * STA connects to the AP interface. This is an obsoleted standard most 406 * users don't use, so don't pass these frames up unless requested. 407 */ 408 if (!ifp->drvr->settings->iapp && brcmf_skb_is_iapp(skb)) { 409 brcmu_pkt_buf_free_skb(skb); 410 return; 411 } 412 413 if (skb->pkt_type == PACKET_MULTICAST) 414 ifp->ndev->stats.multicast++; 415 416 if (!(ifp->ndev->flags & IFF_UP)) { 417 brcmu_pkt_buf_free_skb(skb); 418 return; 419 } 420 421 ifp->ndev->stats.rx_bytes += skb->len; 422 ifp->ndev->stats.rx_packets++; 423 424 brcmf_dbg(DATA, "rx proto=0x%X\n", ntohs(skb->protocol)); 425 netif_rx(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 && (*ifp)->ndev) 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 bool inirq) 498 { 499 struct brcmf_if *ifp; 500 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 501 struct brcmf_pub *drvr = bus_if->drvr; 502 503 brcmf_dbg(DATA, "Enter: %s: rxp=%p\n", dev_name(dev), skb); 504 505 if (brcmf_rx_hdrpull(drvr, skb, &ifp)) 506 return; 507 508 if (brcmf_proto_is_reorder_skb(skb)) { 509 brcmf_proto_rxreorder(ifp, skb); 510 } else { 511 /* Process special event packets */ 512 if (handle_event) { 513 gfp_t gfp = inirq ? GFP_ATOMIC : GFP_KERNEL; 514 515 brcmf_fweh_process_skb(ifp->drvr, skb, 516 BCMILCP_SUBTYPE_VENDOR_LONG, gfp); 517 } 518 brcmf_netif_rx(ifp, skb); 519 } 520 } 521 522 void brcmf_rx_event(struct device *dev, struct sk_buff *skb) 523 { 524 struct brcmf_if *ifp; 525 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 526 struct brcmf_pub *drvr = bus_if->drvr; 527 528 brcmf_dbg(EVENT, "Enter: %s: rxp=%p\n", dev_name(dev), skb); 529 530 if (brcmf_rx_hdrpull(drvr, skb, &ifp)) 531 return; 532 533 brcmf_fweh_process_skb(ifp->drvr, skb, 0, GFP_KERNEL); 534 brcmu_pkt_buf_free_skb(skb); 535 } 536 537 void brcmf_txfinalize(struct brcmf_if *ifp, struct sk_buff *txp, bool success) 538 { 539 struct ethhdr *eh; 540 u16 type; 541 542 eh = (struct ethhdr *)(txp->data); 543 type = ntohs(eh->h_proto); 544 545 if (type == ETH_P_PAE) { 546 atomic_dec(&ifp->pend_8021x_cnt); 547 if (waitqueue_active(&ifp->pend_8021x_wait)) 548 wake_up(&ifp->pend_8021x_wait); 549 } 550 551 if (!success) 552 ifp->ndev->stats.tx_errors++; 553 554 brcmu_pkt_buf_free_skb(txp); 555 } 556 557 static void brcmf_ethtool_get_drvinfo(struct net_device *ndev, 558 struct ethtool_drvinfo *info) 559 { 560 struct brcmf_if *ifp = netdev_priv(ndev); 561 struct brcmf_pub *drvr = ifp->drvr; 562 char drev[BRCMU_DOTREV_LEN] = "n/a"; 563 564 if (drvr->revinfo.result == 0) 565 brcmu_dotrev_str(drvr->revinfo.driverrev, drev); 566 strscpy(info->driver, KBUILD_MODNAME, sizeof(info->driver)); 567 strscpy(info->version, drev, sizeof(info->version)); 568 strscpy(info->fw_version, drvr->fwver, sizeof(info->fw_version)); 569 strscpy(info->bus_info, dev_name(drvr->bus_if->dev), 570 sizeof(info->bus_info)); 571 } 572 573 static const struct ethtool_ops brcmf_ethtool_ops = { 574 .get_drvinfo = brcmf_ethtool_get_drvinfo, 575 }; 576 577 static int brcmf_netdev_stop(struct net_device *ndev) 578 { 579 struct brcmf_if *ifp = netdev_priv(ndev); 580 581 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx); 582 583 brcmf_cfg80211_down(ndev); 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 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 eth_hw_addr_set(ndev, ifp->mac_addr); 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 (locked) 656 err = cfg80211_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 locked) 677 { 678 if (ndev->reg_state == NETREG_REGISTERED) { 679 if (locked) 680 cfg80211_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 netdev_tx_t brcmf_net_mon_start_xmit(struct sk_buff *skb, 733 struct net_device *ndev) 734 { 735 dev_kfree_skb_any(skb); 736 737 return NETDEV_TX_OK; 738 } 739 740 static const struct net_device_ops brcmf_netdev_ops_mon = { 741 .ndo_open = brcmf_net_mon_open, 742 .ndo_stop = brcmf_net_mon_stop, 743 .ndo_start_xmit = brcmf_net_mon_start_xmit, 744 }; 745 746 int brcmf_net_mon_attach(struct brcmf_if *ifp) 747 { 748 struct brcmf_pub *drvr = ifp->drvr; 749 struct net_device *ndev; 750 int err; 751 752 brcmf_dbg(TRACE, "Enter\n"); 753 754 ndev = ifp->ndev; 755 ndev->netdev_ops = &brcmf_netdev_ops_mon; 756 757 err = cfg80211_register_netdevice(ndev); 758 if (err) 759 bphy_err(drvr, "Failed to register %s device\n", ndev->name); 760 761 return err; 762 } 763 764 void brcmf_net_setcarrier(struct brcmf_if *ifp, bool on) 765 { 766 struct net_device *ndev; 767 768 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d carrier=%d\n", ifp->bsscfgidx, 769 on); 770 771 ndev = ifp->ndev; 772 brcmf_txflowblock_if(ifp, BRCMF_NETIF_STOP_REASON_DISCONNECTED, !on); 773 if (on) { 774 if (!netif_carrier_ok(ndev)) 775 netif_carrier_on(ndev); 776 777 } else { 778 if (netif_carrier_ok(ndev)) 779 netif_carrier_off(ndev); 780 } 781 } 782 783 static int brcmf_net_p2p_open(struct net_device *ndev) 784 { 785 brcmf_dbg(TRACE, "Enter\n"); 786 787 return brcmf_cfg80211_up(ndev); 788 } 789 790 static int brcmf_net_p2p_stop(struct net_device *ndev) 791 { 792 brcmf_dbg(TRACE, "Enter\n"); 793 794 return brcmf_cfg80211_down(ndev); 795 } 796 797 static netdev_tx_t brcmf_net_p2p_start_xmit(struct sk_buff *skb, 798 struct net_device *ndev) 799 { 800 if (skb) 801 dev_kfree_skb_any(skb); 802 803 return NETDEV_TX_OK; 804 } 805 806 static const struct net_device_ops brcmf_netdev_ops_p2p = { 807 .ndo_open = brcmf_net_p2p_open, 808 .ndo_stop = brcmf_net_p2p_stop, 809 .ndo_start_xmit = brcmf_net_p2p_start_xmit 810 }; 811 812 static int brcmf_net_p2p_attach(struct brcmf_if *ifp) 813 { 814 struct brcmf_pub *drvr = ifp->drvr; 815 struct net_device *ndev; 816 817 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d mac=%pM\n", ifp->bsscfgidx, 818 ifp->mac_addr); 819 ndev = ifp->ndev; 820 821 ndev->netdev_ops = &brcmf_netdev_ops_p2p; 822 823 /* set the mac address */ 824 eth_hw_addr_set(ndev, ifp->mac_addr); 825 826 if (register_netdev(ndev) != 0) { 827 bphy_err(drvr, "couldn't register the p2p net device\n"); 828 goto fail; 829 } 830 831 brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name); 832 833 return 0; 834 835 fail: 836 ifp->drvr->iflist[ifp->bsscfgidx] = NULL; 837 ndev->netdev_ops = NULL; 838 return -EBADE; 839 } 840 841 struct brcmf_if *brcmf_add_if(struct brcmf_pub *drvr, s32 bsscfgidx, s32 ifidx, 842 bool is_p2pdev, const char *name, u8 *mac_addr) 843 { 844 struct brcmf_if *ifp; 845 struct net_device *ndev; 846 847 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d, ifidx=%d\n", bsscfgidx, ifidx); 848 849 ifp = drvr->iflist[bsscfgidx]; 850 /* 851 * Delete the existing interface before overwriting it 852 * in case we missed the BRCMF_E_IF_DEL event. 853 */ 854 if (ifp) { 855 if (ifidx) { 856 bphy_err(drvr, "ERROR: netdev:%s already exists\n", 857 ifp->ndev->name); 858 netif_stop_queue(ifp->ndev); 859 brcmf_net_detach(ifp->ndev, false); 860 drvr->iflist[bsscfgidx] = NULL; 861 } else { 862 brcmf_dbg(INFO, "netdev:%s ignore IF event\n", 863 ifp->ndev->name); 864 return ERR_PTR(-EINVAL); 865 } 866 } 867 868 if (!drvr->settings->p2p_enable && is_p2pdev) { 869 /* this is P2P_DEVICE interface */ 870 brcmf_dbg(INFO, "allocate non-netdev interface\n"); 871 ifp = kzalloc(sizeof(*ifp), GFP_KERNEL); 872 if (!ifp) 873 return ERR_PTR(-ENOMEM); 874 } else { 875 brcmf_dbg(INFO, "allocate netdev interface\n"); 876 /* Allocate netdev, including space for private structure */ 877 ndev = alloc_netdev(sizeof(*ifp), is_p2pdev ? "p2p%d" : name, 878 NET_NAME_UNKNOWN, ether_setup); 879 if (!ndev) 880 return ERR_PTR(-ENOMEM); 881 882 ndev->needs_free_netdev = true; 883 ifp = netdev_priv(ndev); 884 ifp->ndev = ndev; 885 /* store mapping ifidx to bsscfgidx */ 886 if (drvr->if2bss[ifidx] == BRCMF_BSSIDX_INVALID) 887 drvr->if2bss[ifidx] = bsscfgidx; 888 } 889 890 ifp->drvr = drvr; 891 drvr->iflist[bsscfgidx] = ifp; 892 ifp->ifidx = ifidx; 893 ifp->bsscfgidx = bsscfgidx; 894 895 init_waitqueue_head(&ifp->pend_8021x_wait); 896 spin_lock_init(&ifp->netif_stop_lock); 897 898 if (mac_addr != NULL) 899 memcpy(ifp->mac_addr, mac_addr, ETH_ALEN); 900 901 brcmf_dbg(TRACE, " ==== pid:%x, if:%s (%pM) created ===\n", 902 current->pid, name, ifp->mac_addr); 903 904 return ifp; 905 } 906 907 static void brcmf_del_if(struct brcmf_pub *drvr, s32 bsscfgidx, 908 bool locked) 909 { 910 struct brcmf_if *ifp; 911 int ifidx; 912 913 ifp = drvr->iflist[bsscfgidx]; 914 if (!ifp) { 915 bphy_err(drvr, "Null interface, bsscfgidx=%d\n", bsscfgidx); 916 return; 917 } 918 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d, ifidx=%d\n", bsscfgidx, 919 ifp->ifidx); 920 ifidx = ifp->ifidx; 921 922 if (ifp->ndev) { 923 if (bsscfgidx == 0) { 924 if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) { 925 rtnl_lock(); 926 brcmf_netdev_stop(ifp->ndev); 927 rtnl_unlock(); 928 } 929 } else { 930 netif_stop_queue(ifp->ndev); 931 } 932 933 if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) { 934 cancel_work_sync(&ifp->multicast_work); 935 cancel_work_sync(&ifp->ndoffload_work); 936 } 937 brcmf_net_detach(ifp->ndev, locked); 938 } else { 939 /* Only p2p device interfaces which get dynamically created 940 * end up here. In this case the p2p module should be informed 941 * about the removal of the interface within the firmware. If 942 * not then p2p commands towards the firmware will cause some 943 * serious troublesome side effects. The p2p module will clean 944 * up the ifp if needed. 945 */ 946 brcmf_p2p_ifp_removed(ifp, locked); 947 kfree(ifp); 948 } 949 950 drvr->iflist[bsscfgidx] = NULL; 951 if (drvr->if2bss[ifidx] == bsscfgidx) 952 drvr->if2bss[ifidx] = BRCMF_BSSIDX_INVALID; 953 } 954 955 void brcmf_remove_interface(struct brcmf_if *ifp, bool locked) 956 { 957 if (!ifp || WARN_ON(ifp->drvr->iflist[ifp->bsscfgidx] != ifp)) 958 return; 959 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d, ifidx=%d\n", ifp->bsscfgidx, 960 ifp->ifidx); 961 brcmf_proto_del_if(ifp->drvr, ifp); 962 brcmf_del_if(ifp->drvr, ifp->bsscfgidx, locked); 963 } 964 965 static int brcmf_psm_watchdog_notify(struct brcmf_if *ifp, 966 const struct brcmf_event_msg *evtmsg, 967 void *data) 968 { 969 struct brcmf_pub *drvr = ifp->drvr; 970 int err; 971 972 brcmf_dbg(TRACE, "enter: bsscfgidx=%d\n", ifp->bsscfgidx); 973 974 bphy_err(drvr, "PSM's watchdog has fired!\n"); 975 976 err = brcmf_debug_create_memdump(ifp->drvr->bus_if, data, 977 evtmsg->datalen); 978 if (err) 979 bphy_err(drvr, "Failed to get memory dump, %d\n", err); 980 981 return err; 982 } 983 984 #ifdef CONFIG_INET 985 #define ARPOL_MAX_ENTRIES 8 986 static int brcmf_inetaddr_changed(struct notifier_block *nb, 987 unsigned long action, void *data) 988 { 989 struct brcmf_pub *drvr = container_of(nb, struct brcmf_pub, 990 inetaddr_notifier); 991 struct in_ifaddr *ifa = data; 992 struct net_device *ndev = ifa->ifa_dev->dev; 993 struct brcmf_if *ifp; 994 int idx, i, ret; 995 u32 val; 996 __be32 addr_table[ARPOL_MAX_ENTRIES] = {0}; 997 998 /* Find out if the notification is meant for us */ 999 for (idx = 0; idx < BRCMF_MAX_IFS; idx++) { 1000 ifp = drvr->iflist[idx]; 1001 if (ifp && ifp->ndev == ndev) 1002 break; 1003 if (idx == BRCMF_MAX_IFS - 1) 1004 return NOTIFY_DONE; 1005 } 1006 1007 /* check if arp offload is supported */ 1008 ret = brcmf_fil_iovar_int_get(ifp, "arpoe", &val); 1009 if (ret) 1010 return NOTIFY_OK; 1011 1012 /* old version only support primary index */ 1013 ret = brcmf_fil_iovar_int_get(ifp, "arp_version", &val); 1014 if (ret) 1015 val = 1; 1016 if (val == 1) 1017 ifp = drvr->iflist[0]; 1018 1019 /* retrieve the table from firmware */ 1020 ret = brcmf_fil_iovar_data_get(ifp, "arp_hostip", addr_table, 1021 sizeof(addr_table)); 1022 if (ret) { 1023 bphy_err(drvr, "fail to get arp ip table err:%d\n", ret); 1024 return NOTIFY_OK; 1025 } 1026 1027 for (i = 0; i < ARPOL_MAX_ENTRIES; i++) 1028 if (ifa->ifa_address == addr_table[i]) 1029 break; 1030 1031 switch (action) { 1032 case NETDEV_UP: 1033 if (i == ARPOL_MAX_ENTRIES) { 1034 brcmf_dbg(TRACE, "add %pI4 to arp table\n", 1035 &ifa->ifa_address); 1036 /* set it directly */ 1037 ret = brcmf_fil_iovar_data_set(ifp, "arp_hostip", 1038 &ifa->ifa_address, sizeof(ifa->ifa_address)); 1039 if (ret) 1040 bphy_err(drvr, "add arp ip err %d\n", ret); 1041 } 1042 break; 1043 case NETDEV_DOWN: 1044 if (i < ARPOL_MAX_ENTRIES) { 1045 addr_table[i] = 0; 1046 brcmf_dbg(TRACE, "remove %pI4 from arp table\n", 1047 &ifa->ifa_address); 1048 /* clear the table in firmware */ 1049 ret = brcmf_fil_iovar_data_set(ifp, "arp_hostip_clear", 1050 NULL, 0); 1051 if (ret) { 1052 bphy_err(drvr, "fail to clear arp ip table err:%d\n", 1053 ret); 1054 return NOTIFY_OK; 1055 } 1056 for (i = 0; i < ARPOL_MAX_ENTRIES; i++) { 1057 if (addr_table[i] == 0) 1058 continue; 1059 ret = brcmf_fil_iovar_data_set(ifp, "arp_hostip", 1060 &addr_table[i], 1061 sizeof(addr_table[i])); 1062 if (ret) 1063 bphy_err(drvr, "add arp ip err %d\n", 1064 ret); 1065 } 1066 } 1067 break; 1068 default: 1069 break; 1070 } 1071 1072 return NOTIFY_OK; 1073 } 1074 #endif 1075 1076 #if IS_ENABLED(CONFIG_IPV6) 1077 static int brcmf_inet6addr_changed(struct notifier_block *nb, 1078 unsigned long action, void *data) 1079 { 1080 struct brcmf_pub *drvr = container_of(nb, struct brcmf_pub, 1081 inet6addr_notifier); 1082 struct inet6_ifaddr *ifa = data; 1083 struct brcmf_if *ifp; 1084 int i; 1085 struct in6_addr *table; 1086 1087 /* Only handle primary interface */ 1088 ifp = drvr->iflist[0]; 1089 if (!ifp) 1090 return NOTIFY_DONE; 1091 if (ifp->ndev != ifa->idev->dev) 1092 return NOTIFY_DONE; 1093 1094 table = ifp->ipv6_addr_tbl; 1095 for (i = 0; i < NDOL_MAX_ENTRIES; i++) 1096 if (ipv6_addr_equal(&ifa->addr, &table[i])) 1097 break; 1098 1099 switch (action) { 1100 case NETDEV_UP: 1101 if (i == NDOL_MAX_ENTRIES) { 1102 if (ifp->ipv6addr_idx < NDOL_MAX_ENTRIES) { 1103 table[ifp->ipv6addr_idx++] = ifa->addr; 1104 } else { 1105 for (i = 0; i < NDOL_MAX_ENTRIES - 1; i++) 1106 table[i] = table[i + 1]; 1107 table[NDOL_MAX_ENTRIES - 1] = ifa->addr; 1108 } 1109 } 1110 break; 1111 case NETDEV_DOWN: 1112 if (i < NDOL_MAX_ENTRIES) { 1113 for (; i < ifp->ipv6addr_idx - 1; i++) 1114 table[i] = table[i + 1]; 1115 memset(&table[i], 0, sizeof(table[i])); 1116 ifp->ipv6addr_idx--; 1117 } 1118 break; 1119 default: 1120 break; 1121 } 1122 1123 schedule_work(&ifp->ndoffload_work); 1124 1125 return NOTIFY_OK; 1126 } 1127 #endif 1128 1129 static int brcmf_revinfo_read(struct seq_file *s, void *data) 1130 { 1131 struct brcmf_bus *bus_if = dev_get_drvdata(s->private); 1132 struct brcmf_rev_info *ri = &bus_if->drvr->revinfo; 1133 char drev[BRCMU_DOTREV_LEN]; 1134 char brev[BRCMU_BOARDREV_LEN]; 1135 1136 seq_printf(s, "vendorid: 0x%04x\n", ri->vendorid); 1137 seq_printf(s, "deviceid: 0x%04x\n", ri->deviceid); 1138 seq_printf(s, "radiorev: %s\n", brcmu_dotrev_str(ri->radiorev, drev)); 1139 seq_printf(s, "chip: %s (%s)\n", ri->chipname, 1140 brcmf_fwvid_vendor_name(bus_if->drvr)); 1141 seq_printf(s, "chippkg: %u\n", ri->chippkg); 1142 seq_printf(s, "corerev: %u\n", ri->corerev); 1143 seq_printf(s, "boardid: 0x%04x\n", ri->boardid); 1144 seq_printf(s, "boardvendor: 0x%04x\n", ri->boardvendor); 1145 seq_printf(s, "boardrev: %s\n", brcmu_boardrev_str(ri->boardrev, brev)); 1146 seq_printf(s, "driverrev: %s\n", brcmu_dotrev_str(ri->driverrev, drev)); 1147 seq_printf(s, "ucoderev: %u\n", ri->ucoderev); 1148 seq_printf(s, "bus: %u\n", ri->bus); 1149 seq_printf(s, "phytype: %u\n", ri->phytype); 1150 seq_printf(s, "phyrev: %u\n", ri->phyrev); 1151 seq_printf(s, "anarev: %u\n", ri->anarev); 1152 seq_printf(s, "nvramrev: %08x\n", ri->nvramrev); 1153 1154 seq_printf(s, "clmver: %s\n", bus_if->drvr->clmver); 1155 1156 return 0; 1157 } 1158 1159 static void brcmf_core_bus_reset(struct work_struct *work) 1160 { 1161 struct brcmf_pub *drvr = container_of(work, struct brcmf_pub, 1162 bus_reset); 1163 1164 brcmf_bus_reset(drvr->bus_if); 1165 } 1166 1167 static ssize_t bus_reset_write(struct file *file, const char __user *user_buf, 1168 size_t count, loff_t *ppos) 1169 { 1170 struct brcmf_pub *drvr = file->private_data; 1171 u8 value; 1172 1173 if (kstrtou8_from_user(user_buf, count, 0, &value)) 1174 return -EINVAL; 1175 1176 if (value != 1) 1177 return -EINVAL; 1178 1179 schedule_work(&drvr->bus_reset); 1180 1181 return count; 1182 } 1183 1184 static const struct file_operations bus_reset_fops = { 1185 .open = simple_open, 1186 .llseek = no_llseek, 1187 .write = bus_reset_write, 1188 }; 1189 1190 static int brcmf_bus_started(struct brcmf_pub *drvr, struct cfg80211_ops *ops) 1191 { 1192 int ret = -1; 1193 struct brcmf_bus *bus_if = drvr->bus_if; 1194 struct brcmf_if *ifp; 1195 struct brcmf_if *p2p_ifp; 1196 1197 brcmf_dbg(TRACE, "\n"); 1198 1199 /* add primary networking interface */ 1200 ifp = brcmf_add_if(drvr, 0, 0, false, "wlan%d", 1201 is_valid_ether_addr(drvr->settings->mac) ? drvr->settings->mac : NULL); 1202 if (IS_ERR(ifp)) 1203 return PTR_ERR(ifp); 1204 1205 p2p_ifp = NULL; 1206 1207 /* signal bus ready */ 1208 brcmf_bus_change_state(bus_if, BRCMF_BUS_UP); 1209 1210 /* do bus specific preinit here */ 1211 ret = brcmf_bus_preinit(bus_if); 1212 if (ret < 0) 1213 goto fail; 1214 1215 /* Bus is ready, do any initialization */ 1216 ret = brcmf_c_preinit_dcmds(ifp); 1217 if (ret < 0) 1218 goto fail; 1219 1220 brcmf_feat_attach(drvr); 1221 1222 ret = brcmf_proto_init_done(drvr); 1223 if (ret < 0) 1224 goto fail; 1225 1226 brcmf_proto_add_if(drvr, ifp); 1227 1228 drvr->config = brcmf_cfg80211_attach(drvr, ops, 1229 drvr->settings->p2p_enable); 1230 if (drvr->config == NULL) { 1231 ret = -ENOMEM; 1232 goto fail; 1233 } 1234 1235 ret = brcmf_net_attach(ifp, false); 1236 1237 if ((!ret) && (drvr->settings->p2p_enable)) { 1238 p2p_ifp = drvr->iflist[1]; 1239 if (p2p_ifp) 1240 ret = brcmf_net_p2p_attach(p2p_ifp); 1241 } 1242 1243 if (ret) 1244 goto fail; 1245 1246 #ifdef CONFIG_INET 1247 drvr->inetaddr_notifier.notifier_call = brcmf_inetaddr_changed; 1248 ret = register_inetaddr_notifier(&drvr->inetaddr_notifier); 1249 if (ret) 1250 goto fail; 1251 1252 #if IS_ENABLED(CONFIG_IPV6) 1253 drvr->inet6addr_notifier.notifier_call = brcmf_inet6addr_changed; 1254 ret = register_inet6addr_notifier(&drvr->inet6addr_notifier); 1255 if (ret) { 1256 unregister_inetaddr_notifier(&drvr->inetaddr_notifier); 1257 goto fail; 1258 } 1259 #endif 1260 #endif /* CONFIG_INET */ 1261 1262 INIT_WORK(&drvr->bus_reset, brcmf_core_bus_reset); 1263 1264 /* populate debugfs */ 1265 brcmf_debugfs_add_entry(drvr, "revinfo", brcmf_revinfo_read); 1266 debugfs_create_file("reset", 0600, brcmf_debugfs_get_devdir(drvr), drvr, 1267 &bus_reset_fops); 1268 brcmf_feat_debugfs_create(drvr); 1269 brcmf_proto_debugfs_create(drvr); 1270 brcmf_bus_debugfs_create(bus_if); 1271 1272 return 0; 1273 1274 fail: 1275 bphy_err(drvr, "failed: %d\n", ret); 1276 if (drvr->config) { 1277 brcmf_cfg80211_detach(drvr->config); 1278 drvr->config = NULL; 1279 } 1280 brcmf_net_detach(ifp->ndev, false); 1281 if (p2p_ifp) 1282 brcmf_net_detach(p2p_ifp->ndev, false); 1283 drvr->iflist[0] = NULL; 1284 drvr->iflist[1] = NULL; 1285 if (drvr->settings->ignore_probe_fail) 1286 ret = 0; 1287 1288 return ret; 1289 } 1290 1291 int brcmf_alloc(struct device *dev, struct brcmf_mp_device *settings) 1292 { 1293 struct wiphy *wiphy; 1294 struct cfg80211_ops *ops; 1295 struct brcmf_pub *drvr = NULL; 1296 1297 brcmf_dbg(TRACE, "Enter\n"); 1298 1299 ops = brcmf_cfg80211_get_ops(settings); 1300 if (!ops) 1301 return -ENOMEM; 1302 1303 wiphy = wiphy_new(ops, sizeof(*drvr)); 1304 if (!wiphy) { 1305 kfree(ops); 1306 return -ENOMEM; 1307 } 1308 1309 set_wiphy_dev(wiphy, dev); 1310 drvr = wiphy_priv(wiphy); 1311 drvr->wiphy = wiphy; 1312 drvr->ops = ops; 1313 drvr->bus_if = dev_get_drvdata(dev); 1314 drvr->bus_if->drvr = drvr; 1315 drvr->settings = settings; 1316 1317 return 0; 1318 } 1319 1320 int brcmf_attach(struct device *dev) 1321 { 1322 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1323 struct brcmf_pub *drvr = bus_if->drvr; 1324 int ret = 0; 1325 int i; 1326 1327 brcmf_dbg(TRACE, "Enter\n"); 1328 1329 for (i = 0; i < ARRAY_SIZE(drvr->if2bss); i++) 1330 drvr->if2bss[i] = BRCMF_BSSIDX_INVALID; 1331 1332 mutex_init(&drvr->proto_block); 1333 1334 /* Link to bus module */ 1335 drvr->hdrlen = 0; 1336 1337 ret = brcmf_fwvid_attach(drvr); 1338 if (ret != 0) { 1339 bphy_err(drvr, "brcmf_fwvid_attach failed\n"); 1340 goto fail; 1341 } 1342 1343 /* Attach and link in the protocol */ 1344 ret = brcmf_proto_attach(drvr); 1345 if (ret != 0) { 1346 bphy_err(drvr, "brcmf_prot_attach failed\n"); 1347 goto fail; 1348 } 1349 1350 /* Attach to events important for core code */ 1351 brcmf_fweh_register(drvr, BRCMF_E_PSM_WATCHDOG, 1352 brcmf_psm_watchdog_notify); 1353 1354 /* attach firmware event handler */ 1355 brcmf_fweh_attach(drvr); 1356 1357 ret = brcmf_bus_started(drvr, drvr->ops); 1358 if (ret != 0) { 1359 bphy_err(drvr, "dongle is not responding: err=%d\n", ret); 1360 goto fail; 1361 } 1362 1363 return 0; 1364 1365 fail: 1366 brcmf_detach(dev); 1367 1368 return ret; 1369 } 1370 1371 void brcmf_bus_add_txhdrlen(struct device *dev, uint len) 1372 { 1373 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1374 struct brcmf_pub *drvr = bus_if->drvr; 1375 1376 if (drvr) { 1377 drvr->hdrlen += len; 1378 } 1379 } 1380 1381 void brcmf_dev_reset(struct device *dev) 1382 { 1383 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1384 struct brcmf_pub *drvr = bus_if->drvr; 1385 1386 if (drvr == NULL) 1387 return; 1388 1389 if (drvr->iflist[0]) 1390 brcmf_fil_cmd_int_set(drvr->iflist[0], BRCMF_C_TERMINATED, 1); 1391 } 1392 1393 void brcmf_dev_coredump(struct device *dev) 1394 { 1395 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1396 1397 if (brcmf_debug_create_memdump(bus_if, NULL, 0) < 0) 1398 brcmf_dbg(TRACE, "failed to create coredump\n"); 1399 } 1400 1401 void brcmf_fw_crashed(struct device *dev) 1402 { 1403 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1404 struct brcmf_pub *drvr = bus_if->drvr; 1405 1406 bphy_err(drvr, "Firmware has halted or crashed\n"); 1407 1408 brcmf_dev_coredump(dev); 1409 1410 if (drvr->bus_reset.func) 1411 schedule_work(&drvr->bus_reset); 1412 } 1413 1414 void brcmf_detach(struct device *dev) 1415 { 1416 s32 i; 1417 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1418 struct brcmf_pub *drvr = bus_if->drvr; 1419 1420 brcmf_dbg(TRACE, "Enter\n"); 1421 1422 if (drvr == NULL) 1423 return; 1424 1425 #ifdef CONFIG_INET 1426 unregister_inetaddr_notifier(&drvr->inetaddr_notifier); 1427 #endif 1428 1429 #if IS_ENABLED(CONFIG_IPV6) 1430 unregister_inet6addr_notifier(&drvr->inet6addr_notifier); 1431 #endif 1432 1433 brcmf_bus_change_state(bus_if, BRCMF_BUS_DOWN); 1434 /* make sure primary interface removed last */ 1435 for (i = BRCMF_MAX_IFS - 1; i > -1; i--) { 1436 if (drvr->iflist[i]) 1437 brcmf_remove_interface(drvr->iflist[i], false); 1438 } 1439 brcmf_bus_stop(drvr->bus_if); 1440 1441 brcmf_fweh_detach(drvr); 1442 brcmf_proto_detach(drvr); 1443 1444 if (drvr->mon_if) { 1445 brcmf_net_detach(drvr->mon_if->ndev, false); 1446 drvr->mon_if = NULL; 1447 } 1448 1449 if (drvr->config) { 1450 brcmf_p2p_detach(&drvr->config->p2p); 1451 brcmf_cfg80211_detach(drvr->config); 1452 drvr->config = NULL; 1453 } 1454 1455 brcmf_fwvid_detach(drvr); 1456 } 1457 1458 void brcmf_free(struct device *dev) 1459 { 1460 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1461 struct brcmf_pub *drvr = bus_if->drvr; 1462 1463 if (!drvr) 1464 return; 1465 1466 bus_if->drvr = NULL; 1467 1468 kfree(drvr->ops); 1469 1470 wiphy_free(drvr->wiphy); 1471 } 1472 1473 s32 brcmf_iovar_data_set(struct device *dev, char *name, void *data, u32 len) 1474 { 1475 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1476 struct brcmf_if *ifp = bus_if->drvr->iflist[0]; 1477 1478 return brcmf_fil_iovar_data_set(ifp, name, data, len); 1479 } 1480 1481 static int brcmf_get_pend_8021x_cnt(struct brcmf_if *ifp) 1482 { 1483 return atomic_read(&ifp->pend_8021x_cnt); 1484 } 1485 1486 int brcmf_netdev_wait_pend8021x(struct brcmf_if *ifp) 1487 { 1488 struct brcmf_pub *drvr = ifp->drvr; 1489 int err; 1490 1491 err = wait_event_timeout(ifp->pend_8021x_wait, 1492 !brcmf_get_pend_8021x_cnt(ifp), 1493 MAX_WAIT_FOR_8021X_TX); 1494 1495 if (!err) { 1496 bphy_err(drvr, "Timed out waiting for no pending 802.1x packets\n"); 1497 atomic_set(&ifp->pend_8021x_cnt, 0); 1498 } 1499 1500 return !err; 1501 } 1502 1503 void brcmf_bus_change_state(struct brcmf_bus *bus, enum brcmf_bus_state state) 1504 { 1505 struct brcmf_pub *drvr = bus->drvr; 1506 struct net_device *ndev; 1507 int ifidx; 1508 1509 brcmf_dbg(TRACE, "%d -> %d\n", bus->state, state); 1510 1511 if (!drvr) { 1512 brcmf_dbg(INFO, "ignoring transition, bus not attached yet\n"); 1513 return; 1514 } 1515 1516 bus->state = state; 1517 1518 if (state == BRCMF_BUS_UP) { 1519 for (ifidx = 0; ifidx < BRCMF_MAX_IFS; ifidx++) { 1520 if ((drvr->iflist[ifidx]) && 1521 (drvr->iflist[ifidx]->ndev)) { 1522 ndev = drvr->iflist[ifidx]->ndev; 1523 if (netif_queue_stopped(ndev)) 1524 netif_wake_queue(ndev); 1525 } 1526 } 1527 } 1528 } 1529 1530 int __init brcmf_core_init(void) 1531 { 1532 int err; 1533 1534 err = brcmf_sdio_register(); 1535 if (err) 1536 return err; 1537 1538 err = brcmf_usb_register(); 1539 if (err) 1540 goto error_usb_register; 1541 1542 err = brcmf_pcie_register(); 1543 if (err) 1544 goto error_pcie_register; 1545 return 0; 1546 1547 error_pcie_register: 1548 brcmf_usb_exit(); 1549 error_usb_register: 1550 brcmf_sdio_exit(); 1551 return err; 1552 } 1553 1554 void __exit brcmf_core_exit(void) 1555 { 1556 brcmf_sdio_exit(); 1557 brcmf_usb_exit(); 1558 brcmf_pcie_exit(); 1559 } 1560 1561