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_KERNEL); 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 /* PROMISC unsupported by firmware of older chips */ 193 if (err == -EBADE) 194 bphy_info_once(drvr, "BRCMF_C_SET_PROMISC unsupported\n"); 195 else 196 bphy_err(drvr, "Setting BRCMF_C_SET_PROMISC failed, err=%d\n", 197 err); 198 } 199 brcmf_configure_arp_nd_offload(ifp, !cmd_value); 200 } 201 202 #if IS_ENABLED(CONFIG_IPV6) 203 static void _brcmf_update_ndtable(struct work_struct *work) 204 { 205 struct brcmf_if *ifp = container_of(work, struct brcmf_if, 206 ndoffload_work); 207 struct brcmf_pub *drvr = ifp->drvr; 208 int i, ret; 209 210 /* clear the table in firmware */ 211 ret = brcmf_fil_iovar_data_set(ifp, "nd_hostip_clear", NULL, 0); 212 if (ret) { 213 brcmf_dbg(TRACE, "fail to clear nd ip table err:%d\n", ret); 214 return; 215 } 216 217 for (i = 0; i < ifp->ipv6addr_idx; i++) { 218 ret = brcmf_fil_iovar_data_set(ifp, "nd_hostip", 219 &ifp->ipv6_addr_tbl[i], 220 sizeof(struct in6_addr)); 221 if (ret) 222 bphy_err(drvr, "add nd ip err %d\n", ret); 223 } 224 } 225 #else 226 static void _brcmf_update_ndtable(struct work_struct *work) 227 { 228 } 229 #endif 230 231 static int brcmf_netdev_set_mac_address(struct net_device *ndev, void *addr) 232 { 233 struct brcmf_if *ifp = netdev_priv(ndev); 234 struct sockaddr *sa = (struct sockaddr *)addr; 235 struct brcmf_pub *drvr = ifp->drvr; 236 int err; 237 238 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx); 239 240 err = brcmf_fil_iovar_data_set(ifp, "cur_etheraddr", sa->sa_data, 241 ETH_ALEN); 242 if (err < 0) { 243 bphy_err(drvr, "Setting cur_etheraddr failed, %d\n", err); 244 } else { 245 brcmf_dbg(TRACE, "updated to %pM\n", sa->sa_data); 246 memcpy(ifp->mac_addr, sa->sa_data, ETH_ALEN); 247 memcpy(ifp->ndev->dev_addr, ifp->mac_addr, ETH_ALEN); 248 } 249 return err; 250 } 251 252 static void brcmf_netdev_set_multicast_list(struct net_device *ndev) 253 { 254 struct brcmf_if *ifp = netdev_priv(ndev); 255 256 schedule_work(&ifp->multicast_work); 257 } 258 259 /** 260 * brcmf_skb_is_iapp - checks if skb is an IAPP packet 261 * 262 * @skb: skb to check 263 */ 264 static bool brcmf_skb_is_iapp(struct sk_buff *skb) 265 { 266 static const u8 iapp_l2_update_packet[6] __aligned(2) = { 267 0x00, 0x01, 0xaf, 0x81, 0x01, 0x00, 268 }; 269 unsigned char *eth_data; 270 #if !defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) 271 const u16 *a, *b; 272 #endif 273 274 if (skb->len - skb->mac_len != 6 || 275 !is_multicast_ether_addr(eth_hdr(skb)->h_dest)) 276 return false; 277 278 eth_data = skb_mac_header(skb) + ETH_HLEN; 279 #if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) 280 return !(((*(const u32 *)eth_data) ^ (*(const u32 *)iapp_l2_update_packet)) | 281 ((*(const u16 *)(eth_data + 4)) ^ (*(const u16 *)(iapp_l2_update_packet + 4)))); 282 #else 283 a = (const u16 *)eth_data; 284 b = (const u16 *)iapp_l2_update_packet; 285 286 return !((a[0] ^ b[0]) | (a[1] ^ b[1]) | (a[2] ^ b[2])); 287 #endif 288 } 289 290 static netdev_tx_t brcmf_netdev_start_xmit(struct sk_buff *skb, 291 struct net_device *ndev) 292 { 293 int ret; 294 struct brcmf_if *ifp = netdev_priv(ndev); 295 struct brcmf_pub *drvr = ifp->drvr; 296 struct ethhdr *eh; 297 int head_delta; 298 299 brcmf_dbg(DATA, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx); 300 301 /* Can the device send data? */ 302 if (drvr->bus_if->state != BRCMF_BUS_UP) { 303 bphy_err(drvr, "xmit rejected state=%d\n", drvr->bus_if->state); 304 netif_stop_queue(ndev); 305 dev_kfree_skb(skb); 306 ret = -ENODEV; 307 goto done; 308 } 309 310 /* Some recent Broadcom's firmwares disassociate STA when they receive 311 * an 802.11f ADD frame. This behavior can lead to a local DoS security 312 * issue. Attacker may trigger disassociation of any STA by sending a 313 * proper Ethernet frame to the wireless interface. 314 * 315 * Moreover this feature may break AP interfaces in some specific 316 * setups. This applies e.g. to the bridge with hairpin mode enabled and 317 * IFLA_BRPORT_MCAST_TO_UCAST set. IAPP packet generated by a firmware 318 * will get passed back to the wireless interface and cause immediate 319 * disassociation of a just-connected STA. 320 */ 321 if (!drvr->settings->iapp && brcmf_skb_is_iapp(skb)) { 322 dev_kfree_skb(skb); 323 ret = -EINVAL; 324 goto done; 325 } 326 327 /* Make sure there's enough writeable headroom */ 328 if (skb_headroom(skb) < drvr->hdrlen || skb_header_cloned(skb)) { 329 head_delta = max_t(int, drvr->hdrlen - skb_headroom(skb), 0); 330 331 brcmf_dbg(INFO, "%s: insufficient headroom (%d)\n", 332 brcmf_ifname(ifp), head_delta); 333 atomic_inc(&drvr->bus_if->stats.pktcowed); 334 ret = pskb_expand_head(skb, ALIGN(head_delta, NET_SKB_PAD), 0, 335 GFP_ATOMIC); 336 if (ret < 0) { 337 bphy_err(drvr, "%s: failed to expand headroom\n", 338 brcmf_ifname(ifp)); 339 atomic_inc(&drvr->bus_if->stats.pktcow_failed); 340 goto done; 341 } 342 } 343 344 /* validate length for ether packet */ 345 if (skb->len < sizeof(*eh)) { 346 ret = -EINVAL; 347 dev_kfree_skb(skb); 348 goto done; 349 } 350 351 eh = (struct ethhdr *)(skb->data); 352 353 if (eh->h_proto == htons(ETH_P_PAE)) 354 atomic_inc(&ifp->pend_8021x_cnt); 355 356 /* determine the priority */ 357 if ((skb->priority == 0) || (skb->priority > 7)) 358 skb->priority = cfg80211_classify8021d(skb, NULL); 359 360 /* set pacing shift for packet aggregation */ 361 sk_pacing_shift_update(skb->sk, 8); 362 363 ret = brcmf_proto_tx_queue_data(drvr, ifp->ifidx, skb); 364 if (ret < 0) 365 brcmf_txfinalize(ifp, skb, false); 366 367 done: 368 if (ret) { 369 ndev->stats.tx_dropped++; 370 } else { 371 ndev->stats.tx_packets++; 372 ndev->stats.tx_bytes += skb->len; 373 } 374 375 /* Return ok: we always eat the packet */ 376 return NETDEV_TX_OK; 377 } 378 379 void brcmf_txflowblock_if(struct brcmf_if *ifp, 380 enum brcmf_netif_stop_reason reason, bool state) 381 { 382 unsigned long flags; 383 384 if (!ifp || !ifp->ndev) 385 return; 386 387 brcmf_dbg(TRACE, "enter: bsscfgidx=%d stop=0x%X reason=%d state=%d\n", 388 ifp->bsscfgidx, ifp->netif_stop, reason, state); 389 390 spin_lock_irqsave(&ifp->netif_stop_lock, flags); 391 if (state) { 392 if (!ifp->netif_stop) 393 netif_stop_queue(ifp->ndev); 394 ifp->netif_stop |= reason; 395 } else { 396 ifp->netif_stop &= ~reason; 397 if (!ifp->netif_stop) 398 netif_wake_queue(ifp->ndev); 399 } 400 spin_unlock_irqrestore(&ifp->netif_stop_lock, flags); 401 } 402 403 void brcmf_netif_rx(struct brcmf_if *ifp, struct sk_buff *skb, bool inirq) 404 { 405 /* Most of Broadcom's firmwares send 802.11f ADD frame every time a new 406 * STA connects to the AP interface. This is an obsoleted standard most 407 * users don't use, so don't pass these frames up unless requested. 408 */ 409 if (!ifp->drvr->settings->iapp && brcmf_skb_is_iapp(skb)) { 410 brcmu_pkt_buf_free_skb(skb); 411 return; 412 } 413 414 if (skb->pkt_type == PACKET_MULTICAST) 415 ifp->ndev->stats.multicast++; 416 417 if (!(ifp->ndev->flags & IFF_UP)) { 418 brcmu_pkt_buf_free_skb(skb); 419 return; 420 } 421 422 ifp->ndev->stats.rx_bytes += skb->len; 423 ifp->ndev->stats.rx_packets++; 424 425 brcmf_dbg(DATA, "rx proto=0x%X\n", ntohs(skb->protocol)); 426 if (inirq) { 427 netif_rx(skb); 428 } else { 429 /* If the receive is not processed inside an ISR, 430 * the softirqd must be woken explicitly to service 431 * the NET_RX_SOFTIRQ. This is handled by netif_rx_ni(). 432 */ 433 netif_rx_ni(skb); 434 } 435 } 436 437 void brcmf_netif_mon_rx(struct brcmf_if *ifp, struct sk_buff *skb) 438 { 439 if (brcmf_feat_is_enabled(ifp, BRCMF_FEAT_MONITOR_FMT_RADIOTAP)) { 440 /* Do nothing */ 441 } else if (brcmf_feat_is_enabled(ifp, BRCMF_FEAT_MONITOR_FMT_HW_RX_HDR)) { 442 struct wlc_d11rxhdr *wlc_rxhdr = (struct wlc_d11rxhdr *)skb->data; 443 struct ieee80211_radiotap_header *radiotap; 444 unsigned int offset; 445 u16 RxStatus1; 446 447 RxStatus1 = le16_to_cpu(wlc_rxhdr->rxhdr.RxStatus1); 448 449 offset = sizeof(struct wlc_d11rxhdr); 450 /* MAC inserts 2 pad bytes for a4 headers or QoS or A-MSDU 451 * subframes 452 */ 453 if (RxStatus1 & RXS_PBPRES) 454 offset += 2; 455 offset += D11_PHY_HDR_LEN; 456 457 skb_pull(skb, offset); 458 459 /* TODO: use RX header 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 } else { 467 struct ieee80211_radiotap_header *radiotap; 468 469 /* TODO: use RX status to fill some radiotap data */ 470 radiotap = skb_push(skb, sizeof(*radiotap)); 471 memset(radiotap, 0, sizeof(*radiotap)); 472 radiotap->it_len = cpu_to_le16(sizeof(*radiotap)); 473 474 /* TODO: 4 bytes with receive status? */ 475 skb->len -= 4; 476 } 477 478 skb->dev = ifp->ndev; 479 skb_reset_mac_header(skb); 480 skb->pkt_type = PACKET_OTHERHOST; 481 skb->protocol = htons(ETH_P_802_2); 482 483 brcmf_netif_rx(ifp, skb, false); 484 } 485 486 static int brcmf_rx_hdrpull(struct brcmf_pub *drvr, struct sk_buff *skb, 487 struct brcmf_if **ifp) 488 { 489 int ret; 490 491 /* process and remove protocol-specific header */ 492 ret = brcmf_proto_hdrpull(drvr, true, skb, ifp); 493 494 if (ret || !(*ifp) || !(*ifp)->ndev) { 495 if (ret != -ENODATA && *ifp && (*ifp)->ndev) 496 (*ifp)->ndev->stats.rx_errors++; 497 brcmu_pkt_buf_free_skb(skb); 498 return -ENODATA; 499 } 500 501 skb->protocol = eth_type_trans(skb, (*ifp)->ndev); 502 return 0; 503 } 504 505 void brcmf_rx_frame(struct device *dev, struct sk_buff *skb, bool handle_event, 506 bool inirq) 507 { 508 struct brcmf_if *ifp; 509 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 510 struct brcmf_pub *drvr = bus_if->drvr; 511 512 brcmf_dbg(DATA, "Enter: %s: rxp=%p\n", dev_name(dev), skb); 513 514 if (brcmf_rx_hdrpull(drvr, skb, &ifp)) 515 return; 516 517 if (brcmf_proto_is_reorder_skb(skb)) { 518 brcmf_proto_rxreorder(ifp, skb, inirq); 519 } else { 520 /* Process special event packets */ 521 if (handle_event) { 522 gfp_t gfp = inirq ? GFP_ATOMIC : GFP_KERNEL; 523 524 brcmf_fweh_process_skb(ifp->drvr, skb, 525 BCMILCP_SUBTYPE_VENDOR_LONG, gfp); 526 } 527 brcmf_netif_rx(ifp, skb, inirq); 528 } 529 } 530 531 void brcmf_rx_event(struct device *dev, struct sk_buff *skb) 532 { 533 struct brcmf_if *ifp; 534 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 535 struct brcmf_pub *drvr = bus_if->drvr; 536 537 brcmf_dbg(EVENT, "Enter: %s: rxp=%p\n", dev_name(dev), skb); 538 539 if (brcmf_rx_hdrpull(drvr, skb, &ifp)) 540 return; 541 542 brcmf_fweh_process_skb(ifp->drvr, skb, 0, GFP_KERNEL); 543 brcmu_pkt_buf_free_skb(skb); 544 } 545 546 void brcmf_txfinalize(struct brcmf_if *ifp, struct sk_buff *txp, bool success) 547 { 548 struct ethhdr *eh; 549 u16 type; 550 551 eh = (struct ethhdr *)(txp->data); 552 type = ntohs(eh->h_proto); 553 554 if (type == ETH_P_PAE) { 555 atomic_dec(&ifp->pend_8021x_cnt); 556 if (waitqueue_active(&ifp->pend_8021x_wait)) 557 wake_up(&ifp->pend_8021x_wait); 558 } 559 560 if (!success) 561 ifp->ndev->stats.tx_errors++; 562 563 brcmu_pkt_buf_free_skb(txp); 564 } 565 566 static void brcmf_ethtool_get_drvinfo(struct net_device *ndev, 567 struct ethtool_drvinfo *info) 568 { 569 struct brcmf_if *ifp = netdev_priv(ndev); 570 struct brcmf_pub *drvr = ifp->drvr; 571 char drev[BRCMU_DOTREV_LEN] = "n/a"; 572 573 if (drvr->revinfo.result == 0) 574 brcmu_dotrev_str(drvr->revinfo.driverrev, drev); 575 strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver)); 576 strlcpy(info->version, drev, sizeof(info->version)); 577 strlcpy(info->fw_version, drvr->fwver, sizeof(info->fw_version)); 578 strlcpy(info->bus_info, dev_name(drvr->bus_if->dev), 579 sizeof(info->bus_info)); 580 } 581 582 static const struct ethtool_ops brcmf_ethtool_ops = { 583 .get_drvinfo = brcmf_ethtool_get_drvinfo, 584 }; 585 586 static int brcmf_netdev_stop(struct net_device *ndev) 587 { 588 struct brcmf_if *ifp = netdev_priv(ndev); 589 590 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx); 591 592 brcmf_cfg80211_down(ndev); 593 594 brcmf_net_setcarrier(ifp, false); 595 596 return 0; 597 } 598 599 static int brcmf_netdev_open(struct net_device *ndev) 600 { 601 struct brcmf_if *ifp = netdev_priv(ndev); 602 struct brcmf_pub *drvr = ifp->drvr; 603 struct brcmf_bus *bus_if = drvr->bus_if; 604 u32 toe_ol; 605 606 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx); 607 608 /* If bus is not ready, can't continue */ 609 if (bus_if->state != BRCMF_BUS_UP) { 610 bphy_err(drvr, "failed bus is not ready\n"); 611 return -EAGAIN; 612 } 613 614 atomic_set(&ifp->pend_8021x_cnt, 0); 615 616 /* Get current TOE mode from dongle */ 617 if (brcmf_fil_iovar_int_get(ifp, "toe_ol", &toe_ol) >= 0 618 && (toe_ol & TOE_TX_CSUM_OL) != 0) 619 ndev->features |= NETIF_F_IP_CSUM; 620 else 621 ndev->features &= ~NETIF_F_IP_CSUM; 622 623 if (brcmf_cfg80211_up(ndev)) { 624 bphy_err(drvr, "failed to bring up cfg80211\n"); 625 return -EIO; 626 } 627 628 /* Clear, carrier, set when connected or AP mode. */ 629 netif_carrier_off(ndev); 630 return 0; 631 } 632 633 static const struct net_device_ops brcmf_netdev_ops_pri = { 634 .ndo_open = brcmf_netdev_open, 635 .ndo_stop = brcmf_netdev_stop, 636 .ndo_start_xmit = brcmf_netdev_start_xmit, 637 .ndo_set_mac_address = brcmf_netdev_set_mac_address, 638 .ndo_set_rx_mode = brcmf_netdev_set_multicast_list 639 }; 640 641 int brcmf_net_attach(struct brcmf_if *ifp, bool locked) 642 { 643 struct brcmf_pub *drvr = ifp->drvr; 644 struct net_device *ndev; 645 s32 err; 646 647 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d mac=%pM\n", ifp->bsscfgidx, 648 ifp->mac_addr); 649 ndev = ifp->ndev; 650 651 /* set appropriate operations */ 652 ndev->netdev_ops = &brcmf_netdev_ops_pri; 653 654 ndev->needed_headroom += drvr->hdrlen; 655 ndev->ethtool_ops = &brcmf_ethtool_ops; 656 657 /* set the mac address & netns */ 658 memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN); 659 dev_net_set(ndev, wiphy_net(cfg_to_wiphy(drvr->config))); 660 661 INIT_WORK(&ifp->multicast_work, _brcmf_set_multicast_list); 662 INIT_WORK(&ifp->ndoffload_work, _brcmf_update_ndtable); 663 664 if (locked) 665 err = cfg80211_register_netdevice(ndev); 666 else 667 err = register_netdev(ndev); 668 if (err != 0) { 669 bphy_err(drvr, "couldn't register the net device\n"); 670 goto fail; 671 } 672 673 netif_carrier_off(ndev); 674 675 ndev->priv_destructor = brcmf_cfg80211_free_netdev; 676 brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name); 677 return 0; 678 679 fail: 680 drvr->iflist[ifp->bsscfgidx] = NULL; 681 ndev->netdev_ops = NULL; 682 return -EBADE; 683 } 684 685 void brcmf_net_detach(struct net_device *ndev, bool locked) 686 { 687 if (ndev->reg_state == NETREG_REGISTERED) { 688 if (locked) 689 cfg80211_unregister_netdevice(ndev); 690 else 691 unregister_netdev(ndev); 692 } else { 693 brcmf_cfg80211_free_netdev(ndev); 694 free_netdev(ndev); 695 } 696 } 697 698 static int brcmf_net_mon_open(struct net_device *ndev) 699 { 700 struct brcmf_if *ifp = netdev_priv(ndev); 701 struct brcmf_pub *drvr = ifp->drvr; 702 u32 monitor; 703 int err; 704 705 brcmf_dbg(TRACE, "Enter\n"); 706 707 err = brcmf_fil_cmd_int_get(ifp, BRCMF_C_GET_MONITOR, &monitor); 708 if (err) { 709 bphy_err(drvr, "BRCMF_C_GET_MONITOR error (%d)\n", err); 710 return err; 711 } else if (monitor) { 712 bphy_err(drvr, "Monitor mode is already enabled\n"); 713 return -EEXIST; 714 } 715 716 monitor = 3; 717 err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_MONITOR, monitor); 718 if (err) 719 bphy_err(drvr, "BRCMF_C_SET_MONITOR error (%d)\n", err); 720 721 return err; 722 } 723 724 static int brcmf_net_mon_stop(struct net_device *ndev) 725 { 726 struct brcmf_if *ifp = netdev_priv(ndev); 727 struct brcmf_pub *drvr = ifp->drvr; 728 u32 monitor; 729 int err; 730 731 brcmf_dbg(TRACE, "Enter\n"); 732 733 monitor = 0; 734 err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_MONITOR, monitor); 735 if (err) 736 bphy_err(drvr, "BRCMF_C_SET_MONITOR error (%d)\n", err); 737 738 return err; 739 } 740 741 static netdev_tx_t brcmf_net_mon_start_xmit(struct sk_buff *skb, 742 struct net_device *ndev) 743 { 744 dev_kfree_skb_any(skb); 745 746 return NETDEV_TX_OK; 747 } 748 749 static const struct net_device_ops brcmf_netdev_ops_mon = { 750 .ndo_open = brcmf_net_mon_open, 751 .ndo_stop = brcmf_net_mon_stop, 752 .ndo_start_xmit = brcmf_net_mon_start_xmit, 753 }; 754 755 int brcmf_net_mon_attach(struct brcmf_if *ifp) 756 { 757 struct brcmf_pub *drvr = ifp->drvr; 758 struct net_device *ndev; 759 int err; 760 761 brcmf_dbg(TRACE, "Enter\n"); 762 763 ndev = ifp->ndev; 764 ndev->netdev_ops = &brcmf_netdev_ops_mon; 765 766 err = cfg80211_register_netdevice(ndev); 767 if (err) 768 bphy_err(drvr, "Failed to register %s device\n", ndev->name); 769 770 return err; 771 } 772 773 void brcmf_net_setcarrier(struct brcmf_if *ifp, bool on) 774 { 775 struct net_device *ndev; 776 777 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d carrier=%d\n", ifp->bsscfgidx, 778 on); 779 780 ndev = ifp->ndev; 781 brcmf_txflowblock_if(ifp, BRCMF_NETIF_STOP_REASON_DISCONNECTED, !on); 782 if (on) { 783 if (!netif_carrier_ok(ndev)) 784 netif_carrier_on(ndev); 785 786 } else { 787 if (netif_carrier_ok(ndev)) 788 netif_carrier_off(ndev); 789 } 790 } 791 792 static int brcmf_net_p2p_open(struct net_device *ndev) 793 { 794 brcmf_dbg(TRACE, "Enter\n"); 795 796 return brcmf_cfg80211_up(ndev); 797 } 798 799 static int brcmf_net_p2p_stop(struct net_device *ndev) 800 { 801 brcmf_dbg(TRACE, "Enter\n"); 802 803 return brcmf_cfg80211_down(ndev); 804 } 805 806 static netdev_tx_t brcmf_net_p2p_start_xmit(struct sk_buff *skb, 807 struct net_device *ndev) 808 { 809 if (skb) 810 dev_kfree_skb_any(skb); 811 812 return NETDEV_TX_OK; 813 } 814 815 static const struct net_device_ops brcmf_netdev_ops_p2p = { 816 .ndo_open = brcmf_net_p2p_open, 817 .ndo_stop = brcmf_net_p2p_stop, 818 .ndo_start_xmit = brcmf_net_p2p_start_xmit 819 }; 820 821 static int brcmf_net_p2p_attach(struct brcmf_if *ifp) 822 { 823 struct brcmf_pub *drvr = ifp->drvr; 824 struct net_device *ndev; 825 826 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d mac=%pM\n", ifp->bsscfgidx, 827 ifp->mac_addr); 828 ndev = ifp->ndev; 829 830 ndev->netdev_ops = &brcmf_netdev_ops_p2p; 831 832 /* set the mac address */ 833 memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN); 834 835 if (register_netdev(ndev) != 0) { 836 bphy_err(drvr, "couldn't register the p2p net device\n"); 837 goto fail; 838 } 839 840 brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name); 841 842 return 0; 843 844 fail: 845 ifp->drvr->iflist[ifp->bsscfgidx] = NULL; 846 ndev->netdev_ops = NULL; 847 return -EBADE; 848 } 849 850 struct brcmf_if *brcmf_add_if(struct brcmf_pub *drvr, s32 bsscfgidx, s32 ifidx, 851 bool is_p2pdev, const char *name, u8 *mac_addr) 852 { 853 struct brcmf_if *ifp; 854 struct net_device *ndev; 855 856 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d, ifidx=%d\n", bsscfgidx, ifidx); 857 858 ifp = drvr->iflist[bsscfgidx]; 859 /* 860 * Delete the existing interface before overwriting it 861 * in case we missed the BRCMF_E_IF_DEL event. 862 */ 863 if (ifp) { 864 if (ifidx) { 865 bphy_err(drvr, "ERROR: netdev:%s already exists\n", 866 ifp->ndev->name); 867 netif_stop_queue(ifp->ndev); 868 brcmf_net_detach(ifp->ndev, false); 869 drvr->iflist[bsscfgidx] = NULL; 870 } else { 871 brcmf_dbg(INFO, "netdev:%s ignore IF event\n", 872 ifp->ndev->name); 873 return ERR_PTR(-EINVAL); 874 } 875 } 876 877 if (!drvr->settings->p2p_enable && is_p2pdev) { 878 /* this is P2P_DEVICE interface */ 879 brcmf_dbg(INFO, "allocate non-netdev interface\n"); 880 ifp = kzalloc(sizeof(*ifp), GFP_KERNEL); 881 if (!ifp) 882 return ERR_PTR(-ENOMEM); 883 } else { 884 brcmf_dbg(INFO, "allocate netdev interface\n"); 885 /* Allocate netdev, including space for private structure */ 886 ndev = alloc_netdev(sizeof(*ifp), is_p2pdev ? "p2p%d" : name, 887 NET_NAME_UNKNOWN, ether_setup); 888 if (!ndev) 889 return ERR_PTR(-ENOMEM); 890 891 ndev->needs_free_netdev = true; 892 ifp = netdev_priv(ndev); 893 ifp->ndev = ndev; 894 /* store mapping ifidx to bsscfgidx */ 895 if (drvr->if2bss[ifidx] == BRCMF_BSSIDX_INVALID) 896 drvr->if2bss[ifidx] = bsscfgidx; 897 } 898 899 ifp->drvr = drvr; 900 drvr->iflist[bsscfgidx] = ifp; 901 ifp->ifidx = ifidx; 902 ifp->bsscfgidx = bsscfgidx; 903 904 init_waitqueue_head(&ifp->pend_8021x_wait); 905 spin_lock_init(&ifp->netif_stop_lock); 906 907 if (mac_addr != NULL) 908 memcpy(ifp->mac_addr, mac_addr, ETH_ALEN); 909 910 brcmf_dbg(TRACE, " ==== pid:%x, if:%s (%pM) created ===\n", 911 current->pid, name, ifp->mac_addr); 912 913 return ifp; 914 } 915 916 static void brcmf_del_if(struct brcmf_pub *drvr, s32 bsscfgidx, 917 bool locked) 918 { 919 struct brcmf_if *ifp; 920 int ifidx; 921 922 ifp = drvr->iflist[bsscfgidx]; 923 if (!ifp) { 924 bphy_err(drvr, "Null interface, bsscfgidx=%d\n", bsscfgidx); 925 return; 926 } 927 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d, ifidx=%d\n", bsscfgidx, 928 ifp->ifidx); 929 ifidx = ifp->ifidx; 930 931 if (ifp->ndev) { 932 if (bsscfgidx == 0) { 933 if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) { 934 rtnl_lock(); 935 brcmf_netdev_stop(ifp->ndev); 936 rtnl_unlock(); 937 } 938 } else { 939 netif_stop_queue(ifp->ndev); 940 } 941 942 if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) { 943 cancel_work_sync(&ifp->multicast_work); 944 cancel_work_sync(&ifp->ndoffload_work); 945 } 946 brcmf_net_detach(ifp->ndev, locked); 947 } else { 948 /* Only p2p device interfaces which get dynamically created 949 * end up here. In this case the p2p module should be informed 950 * about the removal of the interface within the firmware. If 951 * not then p2p commands towards the firmware will cause some 952 * serious troublesome side effects. The p2p module will clean 953 * up the ifp if needed. 954 */ 955 brcmf_p2p_ifp_removed(ifp, locked); 956 kfree(ifp); 957 } 958 959 drvr->iflist[bsscfgidx] = NULL; 960 if (drvr->if2bss[ifidx] == bsscfgidx) 961 drvr->if2bss[ifidx] = BRCMF_BSSIDX_INVALID; 962 } 963 964 void brcmf_remove_interface(struct brcmf_if *ifp, bool locked) 965 { 966 if (!ifp || WARN_ON(ifp->drvr->iflist[ifp->bsscfgidx] != ifp)) 967 return; 968 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d, ifidx=%d\n", ifp->bsscfgidx, 969 ifp->ifidx); 970 brcmf_proto_del_if(ifp->drvr, ifp); 971 brcmf_del_if(ifp->drvr, ifp->bsscfgidx, locked); 972 } 973 974 static int brcmf_psm_watchdog_notify(struct brcmf_if *ifp, 975 const struct brcmf_event_msg *evtmsg, 976 void *data) 977 { 978 struct brcmf_pub *drvr = ifp->drvr; 979 int err; 980 981 brcmf_dbg(TRACE, "enter: bsscfgidx=%d\n", ifp->bsscfgidx); 982 983 bphy_err(drvr, "PSM's watchdog has fired!\n"); 984 985 err = brcmf_debug_create_memdump(ifp->drvr->bus_if, data, 986 evtmsg->datalen); 987 if (err) 988 bphy_err(drvr, "Failed to get memory dump, %d\n", err); 989 990 return err; 991 } 992 993 #ifdef CONFIG_INET 994 #define ARPOL_MAX_ENTRIES 8 995 static int brcmf_inetaddr_changed(struct notifier_block *nb, 996 unsigned long action, void *data) 997 { 998 struct brcmf_pub *drvr = container_of(nb, struct brcmf_pub, 999 inetaddr_notifier); 1000 struct in_ifaddr *ifa = data; 1001 struct net_device *ndev = ifa->ifa_dev->dev; 1002 struct brcmf_if *ifp; 1003 int idx, i, ret; 1004 u32 val; 1005 __be32 addr_table[ARPOL_MAX_ENTRIES] = {0}; 1006 1007 /* Find out if the notification is meant for us */ 1008 for (idx = 0; idx < BRCMF_MAX_IFS; idx++) { 1009 ifp = drvr->iflist[idx]; 1010 if (ifp && ifp->ndev == ndev) 1011 break; 1012 if (idx == BRCMF_MAX_IFS - 1) 1013 return NOTIFY_DONE; 1014 } 1015 1016 /* check if arp offload is supported */ 1017 ret = brcmf_fil_iovar_int_get(ifp, "arpoe", &val); 1018 if (ret) 1019 return NOTIFY_OK; 1020 1021 /* old version only support primary index */ 1022 ret = brcmf_fil_iovar_int_get(ifp, "arp_version", &val); 1023 if (ret) 1024 val = 1; 1025 if (val == 1) 1026 ifp = drvr->iflist[0]; 1027 1028 /* retrieve the table from firmware */ 1029 ret = brcmf_fil_iovar_data_get(ifp, "arp_hostip", addr_table, 1030 sizeof(addr_table)); 1031 if (ret) { 1032 bphy_err(drvr, "fail to get arp ip table err:%d\n", ret); 1033 return NOTIFY_OK; 1034 } 1035 1036 for (i = 0; i < ARPOL_MAX_ENTRIES; i++) 1037 if (ifa->ifa_address == addr_table[i]) 1038 break; 1039 1040 switch (action) { 1041 case NETDEV_UP: 1042 if (i == ARPOL_MAX_ENTRIES) { 1043 brcmf_dbg(TRACE, "add %pI4 to arp table\n", 1044 &ifa->ifa_address); 1045 /* set it directly */ 1046 ret = brcmf_fil_iovar_data_set(ifp, "arp_hostip", 1047 &ifa->ifa_address, sizeof(ifa->ifa_address)); 1048 if (ret) 1049 bphy_err(drvr, "add arp ip err %d\n", ret); 1050 } 1051 break; 1052 case NETDEV_DOWN: 1053 if (i < ARPOL_MAX_ENTRIES) { 1054 addr_table[i] = 0; 1055 brcmf_dbg(TRACE, "remove %pI4 from arp table\n", 1056 &ifa->ifa_address); 1057 /* clear the table in firmware */ 1058 ret = brcmf_fil_iovar_data_set(ifp, "arp_hostip_clear", 1059 NULL, 0); 1060 if (ret) { 1061 bphy_err(drvr, "fail to clear arp ip table err:%d\n", 1062 ret); 1063 return NOTIFY_OK; 1064 } 1065 for (i = 0; i < ARPOL_MAX_ENTRIES; i++) { 1066 if (addr_table[i] == 0) 1067 continue; 1068 ret = brcmf_fil_iovar_data_set(ifp, "arp_hostip", 1069 &addr_table[i], 1070 sizeof(addr_table[i])); 1071 if (ret) 1072 bphy_err(drvr, "add arp ip err %d\n", 1073 ret); 1074 } 1075 } 1076 break; 1077 default: 1078 break; 1079 } 1080 1081 return NOTIFY_OK; 1082 } 1083 #endif 1084 1085 #if IS_ENABLED(CONFIG_IPV6) 1086 static int brcmf_inet6addr_changed(struct notifier_block *nb, 1087 unsigned long action, void *data) 1088 { 1089 struct brcmf_pub *drvr = container_of(nb, struct brcmf_pub, 1090 inet6addr_notifier); 1091 struct inet6_ifaddr *ifa = data; 1092 struct brcmf_if *ifp; 1093 int i; 1094 struct in6_addr *table; 1095 1096 /* Only handle primary interface */ 1097 ifp = drvr->iflist[0]; 1098 if (!ifp) 1099 return NOTIFY_DONE; 1100 if (ifp->ndev != ifa->idev->dev) 1101 return NOTIFY_DONE; 1102 1103 table = ifp->ipv6_addr_tbl; 1104 for (i = 0; i < NDOL_MAX_ENTRIES; i++) 1105 if (ipv6_addr_equal(&ifa->addr, &table[i])) 1106 break; 1107 1108 switch (action) { 1109 case NETDEV_UP: 1110 if (i == NDOL_MAX_ENTRIES) { 1111 if (ifp->ipv6addr_idx < NDOL_MAX_ENTRIES) { 1112 table[ifp->ipv6addr_idx++] = ifa->addr; 1113 } else { 1114 for (i = 0; i < NDOL_MAX_ENTRIES - 1; i++) 1115 table[i] = table[i + 1]; 1116 table[NDOL_MAX_ENTRIES - 1] = ifa->addr; 1117 } 1118 } 1119 break; 1120 case NETDEV_DOWN: 1121 if (i < NDOL_MAX_ENTRIES) { 1122 for (; i < ifp->ipv6addr_idx - 1; i++) 1123 table[i] = table[i + 1]; 1124 memset(&table[i], 0, sizeof(table[i])); 1125 ifp->ipv6addr_idx--; 1126 } 1127 break; 1128 default: 1129 break; 1130 } 1131 1132 schedule_work(&ifp->ndoffload_work); 1133 1134 return NOTIFY_OK; 1135 } 1136 #endif 1137 1138 static int brcmf_revinfo_read(struct seq_file *s, void *data) 1139 { 1140 struct brcmf_bus *bus_if = dev_get_drvdata(s->private); 1141 struct brcmf_rev_info *ri = &bus_if->drvr->revinfo; 1142 char drev[BRCMU_DOTREV_LEN]; 1143 char brev[BRCMU_BOARDREV_LEN]; 1144 1145 seq_printf(s, "vendorid: 0x%04x\n", ri->vendorid); 1146 seq_printf(s, "deviceid: 0x%04x\n", ri->deviceid); 1147 seq_printf(s, "radiorev: %s\n", brcmu_dotrev_str(ri->radiorev, drev)); 1148 seq_printf(s, "chip: %s\n", ri->chipname); 1149 seq_printf(s, "chippkg: %u\n", ri->chippkg); 1150 seq_printf(s, "corerev: %u\n", ri->corerev); 1151 seq_printf(s, "boardid: 0x%04x\n", ri->boardid); 1152 seq_printf(s, "boardvendor: 0x%04x\n", ri->boardvendor); 1153 seq_printf(s, "boardrev: %s\n", brcmu_boardrev_str(ri->boardrev, brev)); 1154 seq_printf(s, "driverrev: %s\n", brcmu_dotrev_str(ri->driverrev, drev)); 1155 seq_printf(s, "ucoderev: %u\n", ri->ucoderev); 1156 seq_printf(s, "bus: %u\n", ri->bus); 1157 seq_printf(s, "phytype: %u\n", ri->phytype); 1158 seq_printf(s, "phyrev: %u\n", ri->phyrev); 1159 seq_printf(s, "anarev: %u\n", ri->anarev); 1160 seq_printf(s, "nvramrev: %08x\n", ri->nvramrev); 1161 1162 seq_printf(s, "clmver: %s\n", bus_if->drvr->clmver); 1163 1164 return 0; 1165 } 1166 1167 static void brcmf_core_bus_reset(struct work_struct *work) 1168 { 1169 struct brcmf_pub *drvr = container_of(work, struct brcmf_pub, 1170 bus_reset); 1171 1172 brcmf_bus_reset(drvr->bus_if); 1173 } 1174 1175 static ssize_t bus_reset_write(struct file *file, const char __user *user_buf, 1176 size_t count, loff_t *ppos) 1177 { 1178 struct brcmf_pub *drvr = file->private_data; 1179 u8 value; 1180 1181 if (kstrtou8_from_user(user_buf, count, 0, &value)) 1182 return -EINVAL; 1183 1184 if (value != 1) 1185 return -EINVAL; 1186 1187 schedule_work(&drvr->bus_reset); 1188 1189 return count; 1190 } 1191 1192 static const struct file_operations bus_reset_fops = { 1193 .open = simple_open, 1194 .llseek = no_llseek, 1195 .write = bus_reset_write, 1196 }; 1197 1198 static int brcmf_bus_started(struct brcmf_pub *drvr, struct cfg80211_ops *ops) 1199 { 1200 int ret = -1; 1201 struct brcmf_bus *bus_if = drvr->bus_if; 1202 struct brcmf_if *ifp; 1203 struct brcmf_if *p2p_ifp; 1204 1205 brcmf_dbg(TRACE, "\n"); 1206 1207 /* add primary networking interface */ 1208 ifp = brcmf_add_if(drvr, 0, 0, false, "wlan%d", NULL); 1209 if (IS_ERR(ifp)) 1210 return PTR_ERR(ifp); 1211 1212 p2p_ifp = NULL; 1213 1214 /* signal bus ready */ 1215 brcmf_bus_change_state(bus_if, BRCMF_BUS_UP); 1216 1217 /* do bus specific preinit here */ 1218 ret = brcmf_bus_preinit(bus_if); 1219 if (ret < 0) 1220 goto fail; 1221 1222 /* Bus is ready, do any initialization */ 1223 ret = brcmf_c_preinit_dcmds(ifp); 1224 if (ret < 0) 1225 goto fail; 1226 1227 brcmf_feat_attach(drvr); 1228 1229 ret = brcmf_proto_init_done(drvr); 1230 if (ret < 0) 1231 goto fail; 1232 1233 brcmf_proto_add_if(drvr, ifp); 1234 1235 drvr->config = brcmf_cfg80211_attach(drvr, ops, 1236 drvr->settings->p2p_enable); 1237 if (drvr->config == NULL) { 1238 ret = -ENOMEM; 1239 goto fail; 1240 } 1241 1242 ret = brcmf_net_attach(ifp, false); 1243 1244 if ((!ret) && (drvr->settings->p2p_enable)) { 1245 p2p_ifp = drvr->iflist[1]; 1246 if (p2p_ifp) 1247 ret = brcmf_net_p2p_attach(p2p_ifp); 1248 } 1249 1250 if (ret) 1251 goto fail; 1252 1253 #ifdef CONFIG_INET 1254 drvr->inetaddr_notifier.notifier_call = brcmf_inetaddr_changed; 1255 ret = register_inetaddr_notifier(&drvr->inetaddr_notifier); 1256 if (ret) 1257 goto fail; 1258 1259 #if IS_ENABLED(CONFIG_IPV6) 1260 drvr->inet6addr_notifier.notifier_call = brcmf_inet6addr_changed; 1261 ret = register_inet6addr_notifier(&drvr->inet6addr_notifier); 1262 if (ret) { 1263 unregister_inetaddr_notifier(&drvr->inetaddr_notifier); 1264 goto fail; 1265 } 1266 #endif 1267 #endif /* CONFIG_INET */ 1268 1269 INIT_WORK(&drvr->bus_reset, brcmf_core_bus_reset); 1270 1271 /* populate debugfs */ 1272 brcmf_debugfs_add_entry(drvr, "revinfo", brcmf_revinfo_read); 1273 debugfs_create_file("reset", 0600, brcmf_debugfs_get_devdir(drvr), drvr, 1274 &bus_reset_fops); 1275 brcmf_feat_debugfs_create(drvr); 1276 brcmf_proto_debugfs_create(drvr); 1277 brcmf_bus_debugfs_create(bus_if); 1278 1279 return 0; 1280 1281 fail: 1282 bphy_err(drvr, "failed: %d\n", ret); 1283 if (drvr->config) { 1284 brcmf_cfg80211_detach(drvr->config); 1285 drvr->config = NULL; 1286 } 1287 brcmf_net_detach(ifp->ndev, false); 1288 if (p2p_ifp) 1289 brcmf_net_detach(p2p_ifp->ndev, false); 1290 drvr->iflist[0] = NULL; 1291 drvr->iflist[1] = NULL; 1292 if (drvr->settings->ignore_probe_fail) 1293 ret = 0; 1294 1295 return ret; 1296 } 1297 1298 int brcmf_alloc(struct device *dev, struct brcmf_mp_device *settings) 1299 { 1300 struct wiphy *wiphy; 1301 struct cfg80211_ops *ops; 1302 struct brcmf_pub *drvr = NULL; 1303 1304 brcmf_dbg(TRACE, "Enter\n"); 1305 1306 ops = brcmf_cfg80211_get_ops(settings); 1307 if (!ops) 1308 return -ENOMEM; 1309 1310 wiphy = wiphy_new(ops, sizeof(*drvr)); 1311 if (!wiphy) { 1312 kfree(ops); 1313 return -ENOMEM; 1314 } 1315 1316 set_wiphy_dev(wiphy, dev); 1317 drvr = wiphy_priv(wiphy); 1318 drvr->wiphy = wiphy; 1319 drvr->ops = ops; 1320 drvr->bus_if = dev_get_drvdata(dev); 1321 drvr->bus_if->drvr = drvr; 1322 drvr->settings = settings; 1323 1324 return 0; 1325 } 1326 1327 int brcmf_attach(struct device *dev) 1328 { 1329 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1330 struct brcmf_pub *drvr = bus_if->drvr; 1331 int ret = 0; 1332 int i; 1333 1334 brcmf_dbg(TRACE, "Enter\n"); 1335 1336 for (i = 0; i < ARRAY_SIZE(drvr->if2bss); i++) 1337 drvr->if2bss[i] = BRCMF_BSSIDX_INVALID; 1338 1339 mutex_init(&drvr->proto_block); 1340 1341 /* Link to bus module */ 1342 drvr->hdrlen = 0; 1343 1344 /* Attach and link in the protocol */ 1345 ret = brcmf_proto_attach(drvr); 1346 if (ret != 0) { 1347 bphy_err(drvr, "brcmf_prot_attach failed\n"); 1348 goto fail; 1349 } 1350 1351 /* Attach to events important for core code */ 1352 brcmf_fweh_register(drvr, BRCMF_E_PSM_WATCHDOG, 1353 brcmf_psm_watchdog_notify); 1354 1355 /* attach firmware event handler */ 1356 brcmf_fweh_attach(drvr); 1357 1358 ret = brcmf_bus_started(drvr, drvr->ops); 1359 if (ret != 0) { 1360 bphy_err(drvr, "dongle is not responding: err=%d\n", ret); 1361 goto fail; 1362 } 1363 1364 return 0; 1365 1366 fail: 1367 brcmf_detach(dev); 1368 1369 return ret; 1370 } 1371 1372 void brcmf_bus_add_txhdrlen(struct device *dev, uint len) 1373 { 1374 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1375 struct brcmf_pub *drvr = bus_if->drvr; 1376 1377 if (drvr) { 1378 drvr->hdrlen += len; 1379 } 1380 } 1381 1382 void brcmf_dev_reset(struct device *dev) 1383 { 1384 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1385 struct brcmf_pub *drvr = bus_if->drvr; 1386 1387 if (drvr == NULL) 1388 return; 1389 1390 if (drvr->iflist[0]) 1391 brcmf_fil_cmd_int_set(drvr->iflist[0], BRCMF_C_TERMINATED, 1); 1392 } 1393 1394 void brcmf_dev_coredump(struct device *dev) 1395 { 1396 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1397 1398 if (brcmf_debug_create_memdump(bus_if, NULL, 0) < 0) 1399 brcmf_dbg(TRACE, "failed to create coredump\n"); 1400 } 1401 1402 void brcmf_fw_crashed(struct device *dev) 1403 { 1404 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1405 struct brcmf_pub *drvr = bus_if->drvr; 1406 1407 bphy_err(drvr, "Firmware has halted or crashed\n"); 1408 1409 brcmf_dev_coredump(dev); 1410 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 1456 void brcmf_free(struct device *dev) 1457 { 1458 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1459 struct brcmf_pub *drvr = bus_if->drvr; 1460 1461 if (!drvr) 1462 return; 1463 1464 bus_if->drvr = NULL; 1465 1466 kfree(drvr->ops); 1467 1468 wiphy_free(drvr->wiphy); 1469 } 1470 1471 s32 brcmf_iovar_data_set(struct device *dev, char *name, void *data, u32 len) 1472 { 1473 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1474 struct brcmf_if *ifp = bus_if->drvr->iflist[0]; 1475 1476 return brcmf_fil_iovar_data_set(ifp, name, data, len); 1477 } 1478 1479 static int brcmf_get_pend_8021x_cnt(struct brcmf_if *ifp) 1480 { 1481 return atomic_read(&ifp->pend_8021x_cnt); 1482 } 1483 1484 int brcmf_netdev_wait_pend8021x(struct brcmf_if *ifp) 1485 { 1486 struct brcmf_pub *drvr = ifp->drvr; 1487 int err; 1488 1489 err = wait_event_timeout(ifp->pend_8021x_wait, 1490 !brcmf_get_pend_8021x_cnt(ifp), 1491 MAX_WAIT_FOR_8021X_TX); 1492 1493 if (!err) 1494 bphy_err(drvr, "Timed out waiting for no pending 802.1x packets\n"); 1495 1496 return !err; 1497 } 1498 1499 void brcmf_bus_change_state(struct brcmf_bus *bus, enum brcmf_bus_state state) 1500 { 1501 struct brcmf_pub *drvr = bus->drvr; 1502 struct net_device *ndev; 1503 int ifidx; 1504 1505 brcmf_dbg(TRACE, "%d -> %d\n", bus->state, state); 1506 1507 if (!drvr) { 1508 brcmf_dbg(INFO, "ignoring transition, bus not attached yet\n"); 1509 return; 1510 } 1511 1512 bus->state = state; 1513 1514 if (state == BRCMF_BUS_UP) { 1515 for (ifidx = 0; ifidx < BRCMF_MAX_IFS; ifidx++) { 1516 if ((drvr->iflist[ifidx]) && 1517 (drvr->iflist[ifidx]->ndev)) { 1518 ndev = drvr->iflist[ifidx]->ndev; 1519 if (netif_queue_stopped(ndev)) 1520 netif_wake_queue(ndev); 1521 } 1522 } 1523 } 1524 } 1525 1526 int __init brcmf_core_init(void) 1527 { 1528 int err; 1529 1530 err = brcmf_sdio_register(); 1531 if (err) 1532 return err; 1533 1534 err = brcmf_usb_register(); 1535 if (err) 1536 goto error_usb_register; 1537 1538 err = brcmf_pcie_register(); 1539 if (err) 1540 goto error_pcie_register; 1541 return 0; 1542 1543 error_pcie_register: 1544 brcmf_usb_exit(); 1545 error_usb_register: 1546 brcmf_sdio_exit(); 1547 return err; 1548 } 1549 1550 void __exit brcmf_core_exit(void) 1551 { 1552 brcmf_sdio_exit(); 1553 brcmf_usb_exit(); 1554 brcmf_pcie_exit(); 1555 } 1556 1557