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 /* set pacing shift for packet aggregation */ 356 sk_pacing_shift_update(skb->sk, 8); 357 358 ret = brcmf_proto_tx_queue_data(drvr, ifp->ifidx, skb); 359 if (ret < 0) 360 brcmf_txfinalize(ifp, skb, false); 361 362 done: 363 if (ret) { 364 ndev->stats.tx_dropped++; 365 } else { 366 ndev->stats.tx_packets++; 367 ndev->stats.tx_bytes += skb->len; 368 } 369 370 /* Return ok: we always eat the packet */ 371 return NETDEV_TX_OK; 372 } 373 374 void brcmf_txflowblock_if(struct brcmf_if *ifp, 375 enum brcmf_netif_stop_reason reason, bool state) 376 { 377 unsigned long flags; 378 379 if (!ifp || !ifp->ndev) 380 return; 381 382 brcmf_dbg(TRACE, "enter: bsscfgidx=%d stop=0x%X reason=%d state=%d\n", 383 ifp->bsscfgidx, ifp->netif_stop, reason, state); 384 385 spin_lock_irqsave(&ifp->netif_stop_lock, flags); 386 if (state) { 387 if (!ifp->netif_stop) 388 netif_stop_queue(ifp->ndev); 389 ifp->netif_stop |= reason; 390 } else { 391 ifp->netif_stop &= ~reason; 392 if (!ifp->netif_stop) 393 netif_wake_queue(ifp->ndev); 394 } 395 spin_unlock_irqrestore(&ifp->netif_stop_lock, flags); 396 } 397 398 void brcmf_netif_rx(struct brcmf_if *ifp, struct sk_buff *skb) 399 { 400 /* Most of Broadcom's firmwares send 802.11f ADD frame every time a new 401 * STA connects to the AP interface. This is an obsoleted standard most 402 * users don't use, so don't pass these frames up unless requested. 403 */ 404 if (!ifp->drvr->settings->iapp && brcmf_skb_is_iapp(skb)) { 405 brcmu_pkt_buf_free_skb(skb); 406 return; 407 } 408 409 if (skb->pkt_type == PACKET_MULTICAST) 410 ifp->ndev->stats.multicast++; 411 412 if (!(ifp->ndev->flags & IFF_UP)) { 413 brcmu_pkt_buf_free_skb(skb); 414 return; 415 } 416 417 ifp->ndev->stats.rx_bytes += skb->len; 418 ifp->ndev->stats.rx_packets++; 419 420 brcmf_dbg(DATA, "rx proto=0x%X\n", ntohs(skb->protocol)); 421 if (in_interrupt()) 422 netif_rx(skb); 423 else 424 /* If the receive is not processed inside an ISR, 425 * the softirqd must be woken explicitly to service 426 * the NET_RX_SOFTIRQ. This is handled by netif_rx_ni(). 427 */ 428 netif_rx_ni(skb); 429 } 430 431 void brcmf_netif_mon_rx(struct brcmf_if *ifp, struct sk_buff *skb) 432 { 433 if (brcmf_feat_is_enabled(ifp, BRCMF_FEAT_MONITOR_FMT_RADIOTAP)) { 434 /* Do nothing */ 435 } else if (brcmf_feat_is_enabled(ifp, BRCMF_FEAT_MONITOR_FMT_HW_RX_HDR)) { 436 struct wlc_d11rxhdr *wlc_rxhdr = (struct wlc_d11rxhdr *)skb->data; 437 struct ieee80211_radiotap_header *radiotap; 438 unsigned int offset; 439 u16 RxStatus1; 440 441 RxStatus1 = le16_to_cpu(wlc_rxhdr->rxhdr.RxStatus1); 442 443 offset = sizeof(struct wlc_d11rxhdr); 444 /* MAC inserts 2 pad bytes for a4 headers or QoS or A-MSDU 445 * subframes 446 */ 447 if (RxStatus1 & RXS_PBPRES) 448 offset += 2; 449 offset += D11_PHY_HDR_LEN; 450 451 skb_pull(skb, offset); 452 453 /* TODO: use RX header to fill some radiotap data */ 454 radiotap = skb_push(skb, sizeof(*radiotap)); 455 memset(radiotap, 0, sizeof(*radiotap)); 456 radiotap->it_len = cpu_to_le16(sizeof(*radiotap)); 457 458 /* TODO: 4 bytes with receive status? */ 459 skb->len -= 4; 460 } else { 461 struct ieee80211_radiotap_header *radiotap; 462 463 /* TODO: use RX status to fill some radiotap data */ 464 radiotap = skb_push(skb, sizeof(*radiotap)); 465 memset(radiotap, 0, sizeof(*radiotap)); 466 radiotap->it_len = cpu_to_le16(sizeof(*radiotap)); 467 468 /* TODO: 4 bytes with receive status? */ 469 skb->len -= 4; 470 } 471 472 skb->dev = ifp->ndev; 473 skb_reset_mac_header(skb); 474 skb->pkt_type = PACKET_OTHERHOST; 475 skb->protocol = htons(ETH_P_802_2); 476 477 brcmf_netif_rx(ifp, skb); 478 } 479 480 static int brcmf_rx_hdrpull(struct brcmf_pub *drvr, struct sk_buff *skb, 481 struct brcmf_if **ifp) 482 { 483 int ret; 484 485 /* process and remove protocol-specific header */ 486 ret = brcmf_proto_hdrpull(drvr, true, skb, ifp); 487 488 if (ret || !(*ifp) || !(*ifp)->ndev) { 489 if (ret != -ENODATA && *ifp) 490 (*ifp)->ndev->stats.rx_errors++; 491 brcmu_pkt_buf_free_skb(skb); 492 return -ENODATA; 493 } 494 495 skb->protocol = eth_type_trans(skb, (*ifp)->ndev); 496 return 0; 497 } 498 499 void brcmf_rx_frame(struct device *dev, struct sk_buff *skb, bool handle_event) 500 { 501 struct brcmf_if *ifp; 502 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 503 struct brcmf_pub *drvr = bus_if->drvr; 504 505 brcmf_dbg(DATA, "Enter: %s: rxp=%p\n", dev_name(dev), skb); 506 507 if (brcmf_rx_hdrpull(drvr, skb, &ifp)) 508 return; 509 510 if (brcmf_proto_is_reorder_skb(skb)) { 511 brcmf_proto_rxreorder(ifp, skb); 512 } else { 513 /* Process special event packets */ 514 if (handle_event) 515 brcmf_fweh_process_skb(ifp->drvr, skb, 516 BCMILCP_SUBTYPE_VENDOR_LONG); 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); 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 strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver)); 567 strlcpy(info->version, drev, sizeof(info->version)); 568 strlcpy(info->fw_version, drvr->fwver, sizeof(info->fw_version)); 569 strlcpy(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 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 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 = 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 memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN); 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 rtnl_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, rtnl_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, rtnl_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 rtnl_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, rtnl_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\n", ri->chipname); 1140 seq_printf(s, "chippkg: %u\n", ri->chippkg); 1141 seq_printf(s, "corerev: %u\n", ri->corerev); 1142 seq_printf(s, "boardid: 0x%04x\n", ri->boardid); 1143 seq_printf(s, "boardvendor: 0x%04x\n", ri->boardvendor); 1144 seq_printf(s, "boardrev: %s\n", brcmu_boardrev_str(ri->boardrev, brev)); 1145 seq_printf(s, "driverrev: %s\n", brcmu_dotrev_str(ri->driverrev, drev)); 1146 seq_printf(s, "ucoderev: %u\n", ri->ucoderev); 1147 seq_printf(s, "bus: %u\n", ri->bus); 1148 seq_printf(s, "phytype: %u\n", ri->phytype); 1149 seq_printf(s, "phyrev: %u\n", ri->phyrev); 1150 seq_printf(s, "anarev: %u\n", ri->anarev); 1151 seq_printf(s, "nvramrev: %08x\n", ri->nvramrev); 1152 1153 seq_printf(s, "clmver: %s\n", bus_if->drvr->clmver); 1154 1155 return 0; 1156 } 1157 1158 static void brcmf_core_bus_reset(struct work_struct *work) 1159 { 1160 struct brcmf_pub *drvr = container_of(work, struct brcmf_pub, 1161 bus_reset); 1162 1163 brcmf_bus_reset(drvr->bus_if); 1164 } 1165 1166 static ssize_t bus_reset_write(struct file *file, const char __user *user_buf, 1167 size_t count, loff_t *ppos) 1168 { 1169 struct brcmf_pub *drvr = file->private_data; 1170 u8 value; 1171 1172 if (kstrtou8_from_user(user_buf, count, 0, &value)) 1173 return -EINVAL; 1174 1175 if (value != 1) 1176 return -EINVAL; 1177 1178 schedule_work(&drvr->bus_reset); 1179 1180 return count; 1181 } 1182 1183 static const struct file_operations bus_reset_fops = { 1184 .open = simple_open, 1185 .llseek = no_llseek, 1186 .write = bus_reset_write, 1187 }; 1188 1189 static int brcmf_bus_started(struct brcmf_pub *drvr, struct cfg80211_ops *ops) 1190 { 1191 int ret = -1; 1192 struct brcmf_bus *bus_if = drvr->bus_if; 1193 struct brcmf_if *ifp; 1194 struct brcmf_if *p2p_ifp; 1195 1196 brcmf_dbg(TRACE, "\n"); 1197 1198 /* add primary networking interface */ 1199 ifp = brcmf_add_if(drvr, 0, 0, false, "wlan%d", 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 brcmf_bus_stop(drvr->bus_if); 1426 1427 brcmf_fweh_detach(drvr); 1428 brcmf_proto_detach(drvr); 1429 1430 if (drvr->mon_if) { 1431 brcmf_net_detach(drvr->mon_if->ndev, false); 1432 drvr->mon_if = NULL; 1433 } 1434 1435 /* make sure primary interface removed last */ 1436 for (i = BRCMF_MAX_IFS - 1; i > -1; i--) { 1437 if (drvr->iflist[i]) 1438 brcmf_del_if(drvr, drvr->iflist[i]->bsscfgidx, false); 1439 } 1440 1441 if (drvr->config) { 1442 brcmf_p2p_detach(&drvr->config->p2p); 1443 brcmf_cfg80211_detach(drvr->config); 1444 drvr->config = NULL; 1445 } 1446 } 1447 1448 void brcmf_free(struct device *dev) 1449 { 1450 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1451 struct brcmf_pub *drvr = bus_if->drvr; 1452 1453 if (!drvr) 1454 return; 1455 1456 bus_if->drvr = NULL; 1457 1458 kfree(drvr->ops); 1459 1460 wiphy_free(drvr->wiphy); 1461 } 1462 1463 s32 brcmf_iovar_data_set(struct device *dev, char *name, void *data, u32 len) 1464 { 1465 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1466 struct brcmf_if *ifp = bus_if->drvr->iflist[0]; 1467 1468 return brcmf_fil_iovar_data_set(ifp, name, data, len); 1469 } 1470 1471 static int brcmf_get_pend_8021x_cnt(struct brcmf_if *ifp) 1472 { 1473 return atomic_read(&ifp->pend_8021x_cnt); 1474 } 1475 1476 int brcmf_netdev_wait_pend8021x(struct brcmf_if *ifp) 1477 { 1478 struct brcmf_pub *drvr = ifp->drvr; 1479 int err; 1480 1481 err = wait_event_timeout(ifp->pend_8021x_wait, 1482 !brcmf_get_pend_8021x_cnt(ifp), 1483 MAX_WAIT_FOR_8021X_TX); 1484 1485 if (!err) 1486 bphy_err(drvr, "Timed out waiting for no pending 802.1x packets\n"); 1487 1488 return !err; 1489 } 1490 1491 void brcmf_bus_change_state(struct brcmf_bus *bus, enum brcmf_bus_state state) 1492 { 1493 struct brcmf_pub *drvr = bus->drvr; 1494 struct net_device *ndev; 1495 int ifidx; 1496 1497 brcmf_dbg(TRACE, "%d -> %d\n", bus->state, state); 1498 1499 if (!drvr) { 1500 brcmf_dbg(INFO, "ignoring transition, bus not attached yet\n"); 1501 return; 1502 } 1503 1504 bus->state = state; 1505 1506 if (state == BRCMF_BUS_UP) { 1507 for (ifidx = 0; ifidx < BRCMF_MAX_IFS; ifidx++) { 1508 if ((drvr->iflist[ifidx]) && 1509 (drvr->iflist[ifidx]->ndev)) { 1510 ndev = drvr->iflist[ifidx]->ndev; 1511 if (netif_queue_stopped(ndev)) 1512 netif_wake_queue(ndev); 1513 } 1514 } 1515 } 1516 } 1517 1518 static void brcmf_driver_register(struct work_struct *work) 1519 { 1520 #ifdef CONFIG_BRCMFMAC_SDIO 1521 brcmf_sdio_register(); 1522 #endif 1523 #ifdef CONFIG_BRCMFMAC_USB 1524 brcmf_usb_register(); 1525 #endif 1526 #ifdef CONFIG_BRCMFMAC_PCIE 1527 brcmf_pcie_register(); 1528 #endif 1529 } 1530 static DECLARE_WORK(brcmf_driver_work, brcmf_driver_register); 1531 1532 int __init brcmf_core_init(void) 1533 { 1534 if (!schedule_work(&brcmf_driver_work)) 1535 return -EBUSY; 1536 1537 return 0; 1538 } 1539 1540 void __exit brcmf_core_exit(void) 1541 { 1542 cancel_work_sync(&brcmf_driver_work); 1543 1544 #ifdef CONFIG_BRCMFMAC_SDIO 1545 brcmf_sdio_exit(); 1546 #endif 1547 #ifdef CONFIG_BRCMFMAC_USB 1548 brcmf_usb_exit(); 1549 #endif 1550 #ifdef CONFIG_BRCMFMAC_PCIE 1551 brcmf_pcie_exit(); 1552 #endif 1553 } 1554 1555