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, bool inirq) 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 (inirq) { 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 } 431 432 void brcmf_netif_mon_rx(struct brcmf_if *ifp, struct sk_buff *skb) 433 { 434 if (brcmf_feat_is_enabled(ifp, BRCMF_FEAT_MONITOR_FMT_RADIOTAP)) { 435 /* Do nothing */ 436 } else if (brcmf_feat_is_enabled(ifp, BRCMF_FEAT_MONITOR_FMT_HW_RX_HDR)) { 437 struct wlc_d11rxhdr *wlc_rxhdr = (struct wlc_d11rxhdr *)skb->data; 438 struct ieee80211_radiotap_header *radiotap; 439 unsigned int offset; 440 u16 RxStatus1; 441 442 RxStatus1 = le16_to_cpu(wlc_rxhdr->rxhdr.RxStatus1); 443 444 offset = sizeof(struct wlc_d11rxhdr); 445 /* MAC inserts 2 pad bytes for a4 headers or QoS or A-MSDU 446 * subframes 447 */ 448 if (RxStatus1 & RXS_PBPRES) 449 offset += 2; 450 offset += D11_PHY_HDR_LEN; 451 452 skb_pull(skb, offset); 453 454 /* TODO: use RX header to fill some radiotap data */ 455 radiotap = skb_push(skb, sizeof(*radiotap)); 456 memset(radiotap, 0, sizeof(*radiotap)); 457 radiotap->it_len = cpu_to_le16(sizeof(*radiotap)); 458 459 /* TODO: 4 bytes with receive status? */ 460 skb->len -= 4; 461 } else { 462 struct ieee80211_radiotap_header *radiotap; 463 464 /* TODO: use RX status to fill some radiotap data */ 465 radiotap = skb_push(skb, sizeof(*radiotap)); 466 memset(radiotap, 0, sizeof(*radiotap)); 467 radiotap->it_len = cpu_to_le16(sizeof(*radiotap)); 468 469 /* TODO: 4 bytes with receive status? */ 470 skb->len -= 4; 471 } 472 473 skb->dev = ifp->ndev; 474 skb_reset_mac_header(skb); 475 skb->pkt_type = PACKET_OTHERHOST; 476 skb->protocol = htons(ETH_P_802_2); 477 478 brcmf_netif_rx(ifp, skb, false); 479 } 480 481 static int brcmf_rx_hdrpull(struct brcmf_pub *drvr, struct sk_buff *skb, 482 struct brcmf_if **ifp) 483 { 484 int ret; 485 486 /* process and remove protocol-specific header */ 487 ret = brcmf_proto_hdrpull(drvr, true, skb, ifp); 488 489 if (ret || !(*ifp) || !(*ifp)->ndev) { 490 if (ret != -ENODATA && *ifp && (*ifp)->ndev) 491 (*ifp)->ndev->stats.rx_errors++; 492 brcmu_pkt_buf_free_skb(skb); 493 return -ENODATA; 494 } 495 496 skb->protocol = eth_type_trans(skb, (*ifp)->ndev); 497 return 0; 498 } 499 500 void brcmf_rx_frame(struct device *dev, struct sk_buff *skb, bool handle_event, 501 bool inirq) 502 { 503 struct brcmf_if *ifp; 504 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 505 struct brcmf_pub *drvr = bus_if->drvr; 506 507 brcmf_dbg(DATA, "Enter: %s: rxp=%p\n", dev_name(dev), skb); 508 509 if (brcmf_rx_hdrpull(drvr, skb, &ifp)) 510 return; 511 512 if (brcmf_proto_is_reorder_skb(skb)) { 513 brcmf_proto_rxreorder(ifp, skb, inirq); 514 } else { 515 /* Process special event packets */ 516 if (handle_event) { 517 gfp_t gfp = inirq ? GFP_ATOMIC : GFP_KERNEL; 518 519 brcmf_fweh_process_skb(ifp->drvr, skb, 520 BCMILCP_SUBTYPE_VENDOR_LONG, gfp); 521 } 522 brcmf_netif_rx(ifp, skb, inirq); 523 } 524 } 525 526 void brcmf_rx_event(struct device *dev, struct sk_buff *skb) 527 { 528 struct brcmf_if *ifp; 529 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 530 struct brcmf_pub *drvr = bus_if->drvr; 531 532 brcmf_dbg(EVENT, "Enter: %s: rxp=%p\n", dev_name(dev), skb); 533 534 if (brcmf_rx_hdrpull(drvr, skb, &ifp)) 535 return; 536 537 brcmf_fweh_process_skb(ifp->drvr, skb, 0, GFP_KERNEL); 538 brcmu_pkt_buf_free_skb(skb); 539 } 540 541 void brcmf_txfinalize(struct brcmf_if *ifp, struct sk_buff *txp, bool success) 542 { 543 struct ethhdr *eh; 544 u16 type; 545 546 eh = (struct ethhdr *)(txp->data); 547 type = ntohs(eh->h_proto); 548 549 if (type == ETH_P_PAE) { 550 atomic_dec(&ifp->pend_8021x_cnt); 551 if (waitqueue_active(&ifp->pend_8021x_wait)) 552 wake_up(&ifp->pend_8021x_wait); 553 } 554 555 if (!success) 556 ifp->ndev->stats.tx_errors++; 557 558 brcmu_pkt_buf_free_skb(txp); 559 } 560 561 static void brcmf_ethtool_get_drvinfo(struct net_device *ndev, 562 struct ethtool_drvinfo *info) 563 { 564 struct brcmf_if *ifp = netdev_priv(ndev); 565 struct brcmf_pub *drvr = ifp->drvr; 566 char drev[BRCMU_DOTREV_LEN] = "n/a"; 567 568 if (drvr->revinfo.result == 0) 569 brcmu_dotrev_str(drvr->revinfo.driverrev, drev); 570 strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver)); 571 strlcpy(info->version, drev, sizeof(info->version)); 572 strlcpy(info->fw_version, drvr->fwver, sizeof(info->fw_version)); 573 strlcpy(info->bus_info, dev_name(drvr->bus_if->dev), 574 sizeof(info->bus_info)); 575 } 576 577 static const struct ethtool_ops brcmf_ethtool_ops = { 578 .get_drvinfo = brcmf_ethtool_get_drvinfo, 579 }; 580 581 static int brcmf_netdev_stop(struct net_device *ndev) 582 { 583 struct brcmf_if *ifp = netdev_priv(ndev); 584 585 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx); 586 587 brcmf_cfg80211_down(ndev); 588 589 brcmf_net_setcarrier(ifp, false); 590 591 return 0; 592 } 593 594 static int brcmf_netdev_open(struct net_device *ndev) 595 { 596 struct brcmf_if *ifp = netdev_priv(ndev); 597 struct brcmf_pub *drvr = ifp->drvr; 598 struct brcmf_bus *bus_if = drvr->bus_if; 599 u32 toe_ol; 600 601 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx); 602 603 /* If bus is not ready, can't continue */ 604 if (bus_if->state != BRCMF_BUS_UP) { 605 bphy_err(drvr, "failed bus is not ready\n"); 606 return -EAGAIN; 607 } 608 609 atomic_set(&ifp->pend_8021x_cnt, 0); 610 611 /* Get current TOE mode from dongle */ 612 if (brcmf_fil_iovar_int_get(ifp, "toe_ol", &toe_ol) >= 0 613 && (toe_ol & TOE_TX_CSUM_OL) != 0) 614 ndev->features |= NETIF_F_IP_CSUM; 615 else 616 ndev->features &= ~NETIF_F_IP_CSUM; 617 618 if (brcmf_cfg80211_up(ndev)) { 619 bphy_err(drvr, "failed to bring up cfg80211\n"); 620 return -EIO; 621 } 622 623 /* Clear, carrier, set when connected or AP mode. */ 624 netif_carrier_off(ndev); 625 return 0; 626 } 627 628 static const struct net_device_ops brcmf_netdev_ops_pri = { 629 .ndo_open = brcmf_netdev_open, 630 .ndo_stop = brcmf_netdev_stop, 631 .ndo_start_xmit = brcmf_netdev_start_xmit, 632 .ndo_set_mac_address = brcmf_netdev_set_mac_address, 633 .ndo_set_rx_mode = brcmf_netdev_set_multicast_list 634 }; 635 636 int brcmf_net_attach(struct brcmf_if *ifp, bool locked) 637 { 638 struct brcmf_pub *drvr = ifp->drvr; 639 struct net_device *ndev; 640 s32 err; 641 642 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d mac=%pM\n", ifp->bsscfgidx, 643 ifp->mac_addr); 644 ndev = ifp->ndev; 645 646 /* set appropriate operations */ 647 ndev->netdev_ops = &brcmf_netdev_ops_pri; 648 649 ndev->needed_headroom += drvr->hdrlen; 650 ndev->ethtool_ops = &brcmf_ethtool_ops; 651 652 /* set the mac address & netns */ 653 memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN); 654 dev_net_set(ndev, wiphy_net(cfg_to_wiphy(drvr->config))); 655 656 INIT_WORK(&ifp->multicast_work, _brcmf_set_multicast_list); 657 INIT_WORK(&ifp->ndoffload_work, _brcmf_update_ndtable); 658 659 if (locked) 660 err = cfg80211_register_netdevice(ndev); 661 else 662 err = register_netdev(ndev); 663 if (err != 0) { 664 bphy_err(drvr, "couldn't register the net device\n"); 665 goto fail; 666 } 667 668 netif_carrier_off(ndev); 669 670 ndev->priv_destructor = brcmf_cfg80211_free_netdev; 671 brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name); 672 return 0; 673 674 fail: 675 drvr->iflist[ifp->bsscfgidx] = NULL; 676 ndev->netdev_ops = NULL; 677 return -EBADE; 678 } 679 680 void brcmf_net_detach(struct net_device *ndev, bool locked) 681 { 682 if (ndev->reg_state == NETREG_REGISTERED) { 683 if (locked) 684 cfg80211_unregister_netdevice(ndev); 685 else 686 unregister_netdev(ndev); 687 } else { 688 brcmf_cfg80211_free_netdev(ndev); 689 free_netdev(ndev); 690 } 691 } 692 693 static int brcmf_net_mon_open(struct net_device *ndev) 694 { 695 struct brcmf_if *ifp = netdev_priv(ndev); 696 struct brcmf_pub *drvr = ifp->drvr; 697 u32 monitor; 698 int err; 699 700 brcmf_dbg(TRACE, "Enter\n"); 701 702 err = brcmf_fil_cmd_int_get(ifp, BRCMF_C_GET_MONITOR, &monitor); 703 if (err) { 704 bphy_err(drvr, "BRCMF_C_GET_MONITOR error (%d)\n", err); 705 return err; 706 } else if (monitor) { 707 bphy_err(drvr, "Monitor mode is already enabled\n"); 708 return -EEXIST; 709 } 710 711 monitor = 3; 712 err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_MONITOR, monitor); 713 if (err) 714 bphy_err(drvr, "BRCMF_C_SET_MONITOR error (%d)\n", err); 715 716 return err; 717 } 718 719 static int brcmf_net_mon_stop(struct net_device *ndev) 720 { 721 struct brcmf_if *ifp = netdev_priv(ndev); 722 struct brcmf_pub *drvr = ifp->drvr; 723 u32 monitor; 724 int err; 725 726 brcmf_dbg(TRACE, "Enter\n"); 727 728 monitor = 0; 729 err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_MONITOR, monitor); 730 if (err) 731 bphy_err(drvr, "BRCMF_C_SET_MONITOR error (%d)\n", err); 732 733 return err; 734 } 735 736 static netdev_tx_t brcmf_net_mon_start_xmit(struct sk_buff *skb, 737 struct net_device *ndev) 738 { 739 dev_kfree_skb_any(skb); 740 741 return NETDEV_TX_OK; 742 } 743 744 static const struct net_device_ops brcmf_netdev_ops_mon = { 745 .ndo_open = brcmf_net_mon_open, 746 .ndo_stop = brcmf_net_mon_stop, 747 .ndo_start_xmit = brcmf_net_mon_start_xmit, 748 }; 749 750 int brcmf_net_mon_attach(struct brcmf_if *ifp) 751 { 752 struct brcmf_pub *drvr = ifp->drvr; 753 struct net_device *ndev; 754 int err; 755 756 brcmf_dbg(TRACE, "Enter\n"); 757 758 ndev = ifp->ndev; 759 ndev->netdev_ops = &brcmf_netdev_ops_mon; 760 761 err = cfg80211_register_netdevice(ndev); 762 if (err) 763 bphy_err(drvr, "Failed to register %s device\n", ndev->name); 764 765 return err; 766 } 767 768 void brcmf_net_setcarrier(struct brcmf_if *ifp, bool on) 769 { 770 struct net_device *ndev; 771 772 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d carrier=%d\n", ifp->bsscfgidx, 773 on); 774 775 ndev = ifp->ndev; 776 brcmf_txflowblock_if(ifp, BRCMF_NETIF_STOP_REASON_DISCONNECTED, !on); 777 if (on) { 778 if (!netif_carrier_ok(ndev)) 779 netif_carrier_on(ndev); 780 781 } else { 782 if (netif_carrier_ok(ndev)) 783 netif_carrier_off(ndev); 784 } 785 } 786 787 static int brcmf_net_p2p_open(struct net_device *ndev) 788 { 789 brcmf_dbg(TRACE, "Enter\n"); 790 791 return brcmf_cfg80211_up(ndev); 792 } 793 794 static int brcmf_net_p2p_stop(struct net_device *ndev) 795 { 796 brcmf_dbg(TRACE, "Enter\n"); 797 798 return brcmf_cfg80211_down(ndev); 799 } 800 801 static netdev_tx_t brcmf_net_p2p_start_xmit(struct sk_buff *skb, 802 struct net_device *ndev) 803 { 804 if (skb) 805 dev_kfree_skb_any(skb); 806 807 return NETDEV_TX_OK; 808 } 809 810 static const struct net_device_ops brcmf_netdev_ops_p2p = { 811 .ndo_open = brcmf_net_p2p_open, 812 .ndo_stop = brcmf_net_p2p_stop, 813 .ndo_start_xmit = brcmf_net_p2p_start_xmit 814 }; 815 816 static int brcmf_net_p2p_attach(struct brcmf_if *ifp) 817 { 818 struct brcmf_pub *drvr = ifp->drvr; 819 struct net_device *ndev; 820 821 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d mac=%pM\n", ifp->bsscfgidx, 822 ifp->mac_addr); 823 ndev = ifp->ndev; 824 825 ndev->netdev_ops = &brcmf_netdev_ops_p2p; 826 827 /* set the mac address */ 828 memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN); 829 830 if (register_netdev(ndev) != 0) { 831 bphy_err(drvr, "couldn't register the p2p net device\n"); 832 goto fail; 833 } 834 835 brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name); 836 837 return 0; 838 839 fail: 840 ifp->drvr->iflist[ifp->bsscfgidx] = NULL; 841 ndev->netdev_ops = NULL; 842 return -EBADE; 843 } 844 845 struct brcmf_if *brcmf_add_if(struct brcmf_pub *drvr, s32 bsscfgidx, s32 ifidx, 846 bool is_p2pdev, const char *name, u8 *mac_addr) 847 { 848 struct brcmf_if *ifp; 849 struct net_device *ndev; 850 851 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d, ifidx=%d\n", bsscfgidx, ifidx); 852 853 ifp = drvr->iflist[bsscfgidx]; 854 /* 855 * Delete the existing interface before overwriting it 856 * in case we missed the BRCMF_E_IF_DEL event. 857 */ 858 if (ifp) { 859 if (ifidx) { 860 bphy_err(drvr, "ERROR: netdev:%s already exists\n", 861 ifp->ndev->name); 862 netif_stop_queue(ifp->ndev); 863 brcmf_net_detach(ifp->ndev, false); 864 drvr->iflist[bsscfgidx] = NULL; 865 } else { 866 brcmf_dbg(INFO, "netdev:%s ignore IF event\n", 867 ifp->ndev->name); 868 return ERR_PTR(-EINVAL); 869 } 870 } 871 872 if (!drvr->settings->p2p_enable && is_p2pdev) { 873 /* this is P2P_DEVICE interface */ 874 brcmf_dbg(INFO, "allocate non-netdev interface\n"); 875 ifp = kzalloc(sizeof(*ifp), GFP_KERNEL); 876 if (!ifp) 877 return ERR_PTR(-ENOMEM); 878 } else { 879 brcmf_dbg(INFO, "allocate netdev interface\n"); 880 /* Allocate netdev, including space for private structure */ 881 ndev = alloc_netdev(sizeof(*ifp), is_p2pdev ? "p2p%d" : name, 882 NET_NAME_UNKNOWN, ether_setup); 883 if (!ndev) 884 return ERR_PTR(-ENOMEM); 885 886 ndev->needs_free_netdev = true; 887 ifp = netdev_priv(ndev); 888 ifp->ndev = ndev; 889 /* store mapping ifidx to bsscfgidx */ 890 if (drvr->if2bss[ifidx] == BRCMF_BSSIDX_INVALID) 891 drvr->if2bss[ifidx] = bsscfgidx; 892 } 893 894 ifp->drvr = drvr; 895 drvr->iflist[bsscfgidx] = ifp; 896 ifp->ifidx = ifidx; 897 ifp->bsscfgidx = bsscfgidx; 898 899 init_waitqueue_head(&ifp->pend_8021x_wait); 900 spin_lock_init(&ifp->netif_stop_lock); 901 902 if (mac_addr != NULL) 903 memcpy(ifp->mac_addr, mac_addr, ETH_ALEN); 904 905 brcmf_dbg(TRACE, " ==== pid:%x, if:%s (%pM) created ===\n", 906 current->pid, name, ifp->mac_addr); 907 908 return ifp; 909 } 910 911 static void brcmf_del_if(struct brcmf_pub *drvr, s32 bsscfgidx, 912 bool locked) 913 { 914 struct brcmf_if *ifp; 915 int ifidx; 916 917 ifp = drvr->iflist[bsscfgidx]; 918 if (!ifp) { 919 bphy_err(drvr, "Null interface, bsscfgidx=%d\n", bsscfgidx); 920 return; 921 } 922 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d, ifidx=%d\n", bsscfgidx, 923 ifp->ifidx); 924 ifidx = ifp->ifidx; 925 926 if (ifp->ndev) { 927 if (bsscfgidx == 0) { 928 if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) { 929 rtnl_lock(); 930 brcmf_netdev_stop(ifp->ndev); 931 rtnl_unlock(); 932 } 933 } else { 934 netif_stop_queue(ifp->ndev); 935 } 936 937 if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) { 938 cancel_work_sync(&ifp->multicast_work); 939 cancel_work_sync(&ifp->ndoffload_work); 940 } 941 brcmf_net_detach(ifp->ndev, locked); 942 } else { 943 /* Only p2p device interfaces which get dynamically created 944 * end up here. In this case the p2p module should be informed 945 * about the removal of the interface within the firmware. If 946 * not then p2p commands towards the firmware will cause some 947 * serious troublesome side effects. The p2p module will clean 948 * up the ifp if needed. 949 */ 950 brcmf_p2p_ifp_removed(ifp, locked); 951 kfree(ifp); 952 } 953 954 drvr->iflist[bsscfgidx] = NULL; 955 if (drvr->if2bss[ifidx] == bsscfgidx) 956 drvr->if2bss[ifidx] = BRCMF_BSSIDX_INVALID; 957 } 958 959 void brcmf_remove_interface(struct brcmf_if *ifp, bool locked) 960 { 961 if (!ifp || WARN_ON(ifp->drvr->iflist[ifp->bsscfgidx] != ifp)) 962 return; 963 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d, ifidx=%d\n", ifp->bsscfgidx, 964 ifp->ifidx); 965 brcmf_proto_del_if(ifp->drvr, ifp); 966 brcmf_del_if(ifp->drvr, ifp->bsscfgidx, locked); 967 } 968 969 static int brcmf_psm_watchdog_notify(struct brcmf_if *ifp, 970 const struct brcmf_event_msg *evtmsg, 971 void *data) 972 { 973 struct brcmf_pub *drvr = ifp->drvr; 974 int err; 975 976 brcmf_dbg(TRACE, "enter: bsscfgidx=%d\n", ifp->bsscfgidx); 977 978 bphy_err(drvr, "PSM's watchdog has fired!\n"); 979 980 err = brcmf_debug_create_memdump(ifp->drvr->bus_if, data, 981 evtmsg->datalen); 982 if (err) 983 bphy_err(drvr, "Failed to get memory dump, %d\n", err); 984 985 return err; 986 } 987 988 #ifdef CONFIG_INET 989 #define ARPOL_MAX_ENTRIES 8 990 static int brcmf_inetaddr_changed(struct notifier_block *nb, 991 unsigned long action, void *data) 992 { 993 struct brcmf_pub *drvr = container_of(nb, struct brcmf_pub, 994 inetaddr_notifier); 995 struct in_ifaddr *ifa = data; 996 struct net_device *ndev = ifa->ifa_dev->dev; 997 struct brcmf_if *ifp; 998 int idx, i, ret; 999 u32 val; 1000 __be32 addr_table[ARPOL_MAX_ENTRIES] = {0}; 1001 1002 /* Find out if the notification is meant for us */ 1003 for (idx = 0; idx < BRCMF_MAX_IFS; idx++) { 1004 ifp = drvr->iflist[idx]; 1005 if (ifp && ifp->ndev == ndev) 1006 break; 1007 if (idx == BRCMF_MAX_IFS - 1) 1008 return NOTIFY_DONE; 1009 } 1010 1011 /* check if arp offload is supported */ 1012 ret = brcmf_fil_iovar_int_get(ifp, "arpoe", &val); 1013 if (ret) 1014 return NOTIFY_OK; 1015 1016 /* old version only support primary index */ 1017 ret = brcmf_fil_iovar_int_get(ifp, "arp_version", &val); 1018 if (ret) 1019 val = 1; 1020 if (val == 1) 1021 ifp = drvr->iflist[0]; 1022 1023 /* retrieve the table from firmware */ 1024 ret = brcmf_fil_iovar_data_get(ifp, "arp_hostip", addr_table, 1025 sizeof(addr_table)); 1026 if (ret) { 1027 bphy_err(drvr, "fail to get arp ip table err:%d\n", ret); 1028 return NOTIFY_OK; 1029 } 1030 1031 for (i = 0; i < ARPOL_MAX_ENTRIES; i++) 1032 if (ifa->ifa_address == addr_table[i]) 1033 break; 1034 1035 switch (action) { 1036 case NETDEV_UP: 1037 if (i == ARPOL_MAX_ENTRIES) { 1038 brcmf_dbg(TRACE, "add %pI4 to arp table\n", 1039 &ifa->ifa_address); 1040 /* set it directly */ 1041 ret = brcmf_fil_iovar_data_set(ifp, "arp_hostip", 1042 &ifa->ifa_address, sizeof(ifa->ifa_address)); 1043 if (ret) 1044 bphy_err(drvr, "add arp ip err %d\n", ret); 1045 } 1046 break; 1047 case NETDEV_DOWN: 1048 if (i < ARPOL_MAX_ENTRIES) { 1049 addr_table[i] = 0; 1050 brcmf_dbg(TRACE, "remove %pI4 from arp table\n", 1051 &ifa->ifa_address); 1052 /* clear the table in firmware */ 1053 ret = brcmf_fil_iovar_data_set(ifp, "arp_hostip_clear", 1054 NULL, 0); 1055 if (ret) { 1056 bphy_err(drvr, "fail to clear arp ip table err:%d\n", 1057 ret); 1058 return NOTIFY_OK; 1059 } 1060 for (i = 0; i < ARPOL_MAX_ENTRIES; i++) { 1061 if (addr_table[i] == 0) 1062 continue; 1063 ret = brcmf_fil_iovar_data_set(ifp, "arp_hostip", 1064 &addr_table[i], 1065 sizeof(addr_table[i])); 1066 if (ret) 1067 bphy_err(drvr, "add arp ip err %d\n", 1068 ret); 1069 } 1070 } 1071 break; 1072 default: 1073 break; 1074 } 1075 1076 return NOTIFY_OK; 1077 } 1078 #endif 1079 1080 #if IS_ENABLED(CONFIG_IPV6) 1081 static int brcmf_inet6addr_changed(struct notifier_block *nb, 1082 unsigned long action, void *data) 1083 { 1084 struct brcmf_pub *drvr = container_of(nb, struct brcmf_pub, 1085 inet6addr_notifier); 1086 struct inet6_ifaddr *ifa = data; 1087 struct brcmf_if *ifp; 1088 int i; 1089 struct in6_addr *table; 1090 1091 /* Only handle primary interface */ 1092 ifp = drvr->iflist[0]; 1093 if (!ifp) 1094 return NOTIFY_DONE; 1095 if (ifp->ndev != ifa->idev->dev) 1096 return NOTIFY_DONE; 1097 1098 table = ifp->ipv6_addr_tbl; 1099 for (i = 0; i < NDOL_MAX_ENTRIES; i++) 1100 if (ipv6_addr_equal(&ifa->addr, &table[i])) 1101 break; 1102 1103 switch (action) { 1104 case NETDEV_UP: 1105 if (i == NDOL_MAX_ENTRIES) { 1106 if (ifp->ipv6addr_idx < NDOL_MAX_ENTRIES) { 1107 table[ifp->ipv6addr_idx++] = ifa->addr; 1108 } else { 1109 for (i = 0; i < NDOL_MAX_ENTRIES - 1; i++) 1110 table[i] = table[i + 1]; 1111 table[NDOL_MAX_ENTRIES - 1] = ifa->addr; 1112 } 1113 } 1114 break; 1115 case NETDEV_DOWN: 1116 if (i < NDOL_MAX_ENTRIES) { 1117 for (; i < ifp->ipv6addr_idx - 1; i++) 1118 table[i] = table[i + 1]; 1119 memset(&table[i], 0, sizeof(table[i])); 1120 ifp->ipv6addr_idx--; 1121 } 1122 break; 1123 default: 1124 break; 1125 } 1126 1127 schedule_work(&ifp->ndoffload_work); 1128 1129 return NOTIFY_OK; 1130 } 1131 #endif 1132 1133 static int brcmf_revinfo_read(struct seq_file *s, void *data) 1134 { 1135 struct brcmf_bus *bus_if = dev_get_drvdata(s->private); 1136 struct brcmf_rev_info *ri = &bus_if->drvr->revinfo; 1137 char drev[BRCMU_DOTREV_LEN]; 1138 char brev[BRCMU_BOARDREV_LEN]; 1139 1140 seq_printf(s, "vendorid: 0x%04x\n", ri->vendorid); 1141 seq_printf(s, "deviceid: 0x%04x\n", ri->deviceid); 1142 seq_printf(s, "radiorev: %s\n", brcmu_dotrev_str(ri->radiorev, drev)); 1143 seq_printf(s, "chip: %s\n", ri->chipname); 1144 seq_printf(s, "chippkg: %u\n", ri->chippkg); 1145 seq_printf(s, "corerev: %u\n", ri->corerev); 1146 seq_printf(s, "boardid: 0x%04x\n", ri->boardid); 1147 seq_printf(s, "boardvendor: 0x%04x\n", ri->boardvendor); 1148 seq_printf(s, "boardrev: %s\n", brcmu_boardrev_str(ri->boardrev, brev)); 1149 seq_printf(s, "driverrev: %s\n", brcmu_dotrev_str(ri->driverrev, drev)); 1150 seq_printf(s, "ucoderev: %u\n", ri->ucoderev); 1151 seq_printf(s, "bus: %u\n", ri->bus); 1152 seq_printf(s, "phytype: %u\n", ri->phytype); 1153 seq_printf(s, "phyrev: %u\n", ri->phyrev); 1154 seq_printf(s, "anarev: %u\n", ri->anarev); 1155 seq_printf(s, "nvramrev: %08x\n", ri->nvramrev); 1156 1157 seq_printf(s, "clmver: %s\n", bus_if->drvr->clmver); 1158 1159 return 0; 1160 } 1161 1162 static void brcmf_core_bus_reset(struct work_struct *work) 1163 { 1164 struct brcmf_pub *drvr = container_of(work, struct brcmf_pub, 1165 bus_reset); 1166 1167 brcmf_bus_reset(drvr->bus_if); 1168 } 1169 1170 static ssize_t bus_reset_write(struct file *file, const char __user *user_buf, 1171 size_t count, loff_t *ppos) 1172 { 1173 struct brcmf_pub *drvr = file->private_data; 1174 u8 value; 1175 1176 if (kstrtou8_from_user(user_buf, count, 0, &value)) 1177 return -EINVAL; 1178 1179 if (value != 1) 1180 return -EINVAL; 1181 1182 schedule_work(&drvr->bus_reset); 1183 1184 return count; 1185 } 1186 1187 static const struct file_operations bus_reset_fops = { 1188 .open = simple_open, 1189 .llseek = no_llseek, 1190 .write = bus_reset_write, 1191 }; 1192 1193 static int brcmf_bus_started(struct brcmf_pub *drvr, struct cfg80211_ops *ops) 1194 { 1195 int ret = -1; 1196 struct brcmf_bus *bus_if = drvr->bus_if; 1197 struct brcmf_if *ifp; 1198 struct brcmf_if *p2p_ifp; 1199 1200 brcmf_dbg(TRACE, "\n"); 1201 1202 /* add primary networking interface */ 1203 ifp = brcmf_add_if(drvr, 0, 0, false, "wlan%d", NULL); 1204 if (IS_ERR(ifp)) 1205 return PTR_ERR(ifp); 1206 1207 p2p_ifp = NULL; 1208 1209 /* signal bus ready */ 1210 brcmf_bus_change_state(bus_if, BRCMF_BUS_UP); 1211 1212 /* do bus specific preinit here */ 1213 ret = brcmf_bus_preinit(bus_if); 1214 if (ret < 0) 1215 goto fail; 1216 1217 /* Bus is ready, do any initialization */ 1218 ret = brcmf_c_preinit_dcmds(ifp); 1219 if (ret < 0) 1220 goto fail; 1221 1222 brcmf_feat_attach(drvr); 1223 1224 ret = brcmf_proto_init_done(drvr); 1225 if (ret < 0) 1226 goto fail; 1227 1228 brcmf_proto_add_if(drvr, ifp); 1229 1230 drvr->config = brcmf_cfg80211_attach(drvr, ops, 1231 drvr->settings->p2p_enable); 1232 if (drvr->config == NULL) { 1233 ret = -ENOMEM; 1234 goto fail; 1235 } 1236 1237 ret = brcmf_net_attach(ifp, false); 1238 1239 if ((!ret) && (drvr->settings->p2p_enable)) { 1240 p2p_ifp = drvr->iflist[1]; 1241 if (p2p_ifp) 1242 ret = brcmf_net_p2p_attach(p2p_ifp); 1243 } 1244 1245 if (ret) 1246 goto fail; 1247 1248 #ifdef CONFIG_INET 1249 drvr->inetaddr_notifier.notifier_call = brcmf_inetaddr_changed; 1250 ret = register_inetaddr_notifier(&drvr->inetaddr_notifier); 1251 if (ret) 1252 goto fail; 1253 1254 #if IS_ENABLED(CONFIG_IPV6) 1255 drvr->inet6addr_notifier.notifier_call = brcmf_inet6addr_changed; 1256 ret = register_inet6addr_notifier(&drvr->inet6addr_notifier); 1257 if (ret) { 1258 unregister_inetaddr_notifier(&drvr->inetaddr_notifier); 1259 goto fail; 1260 } 1261 #endif 1262 #endif /* CONFIG_INET */ 1263 1264 INIT_WORK(&drvr->bus_reset, brcmf_core_bus_reset); 1265 1266 /* populate debugfs */ 1267 brcmf_debugfs_add_entry(drvr, "revinfo", brcmf_revinfo_read); 1268 debugfs_create_file("reset", 0600, brcmf_debugfs_get_devdir(drvr), drvr, 1269 &bus_reset_fops); 1270 brcmf_feat_debugfs_create(drvr); 1271 brcmf_proto_debugfs_create(drvr); 1272 brcmf_bus_debugfs_create(bus_if); 1273 1274 return 0; 1275 1276 fail: 1277 bphy_err(drvr, "failed: %d\n", ret); 1278 if (drvr->config) { 1279 brcmf_cfg80211_detach(drvr->config); 1280 drvr->config = NULL; 1281 } 1282 brcmf_net_detach(ifp->ndev, false); 1283 if (p2p_ifp) 1284 brcmf_net_detach(p2p_ifp->ndev, false); 1285 drvr->iflist[0] = NULL; 1286 drvr->iflist[1] = NULL; 1287 if (drvr->settings->ignore_probe_fail) 1288 ret = 0; 1289 1290 return ret; 1291 } 1292 1293 int brcmf_alloc(struct device *dev, struct brcmf_mp_device *settings) 1294 { 1295 struct wiphy *wiphy; 1296 struct cfg80211_ops *ops; 1297 struct brcmf_pub *drvr = NULL; 1298 1299 brcmf_dbg(TRACE, "Enter\n"); 1300 1301 ops = brcmf_cfg80211_get_ops(settings); 1302 if (!ops) 1303 return -ENOMEM; 1304 1305 wiphy = wiphy_new(ops, sizeof(*drvr)); 1306 if (!wiphy) { 1307 kfree(ops); 1308 return -ENOMEM; 1309 } 1310 1311 set_wiphy_dev(wiphy, dev); 1312 drvr = wiphy_priv(wiphy); 1313 drvr->wiphy = wiphy; 1314 drvr->ops = ops; 1315 drvr->bus_if = dev_get_drvdata(dev); 1316 drvr->bus_if->drvr = drvr; 1317 drvr->settings = settings; 1318 1319 return 0; 1320 } 1321 1322 int brcmf_attach(struct device *dev) 1323 { 1324 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1325 struct brcmf_pub *drvr = bus_if->drvr; 1326 int ret = 0; 1327 int i; 1328 1329 brcmf_dbg(TRACE, "Enter\n"); 1330 1331 for (i = 0; i < ARRAY_SIZE(drvr->if2bss); i++) 1332 drvr->if2bss[i] = BRCMF_BSSIDX_INVALID; 1333 1334 mutex_init(&drvr->proto_block); 1335 1336 /* Link to bus module */ 1337 drvr->hdrlen = 0; 1338 1339 /* Attach and link in the protocol */ 1340 ret = brcmf_proto_attach(drvr); 1341 if (ret != 0) { 1342 bphy_err(drvr, "brcmf_prot_attach failed\n"); 1343 goto fail; 1344 } 1345 1346 /* Attach to events important for core code */ 1347 brcmf_fweh_register(drvr, BRCMF_E_PSM_WATCHDOG, 1348 brcmf_psm_watchdog_notify); 1349 1350 /* attach firmware event handler */ 1351 brcmf_fweh_attach(drvr); 1352 1353 ret = brcmf_bus_started(drvr, drvr->ops); 1354 if (ret != 0) { 1355 bphy_err(drvr, "dongle is not responding: err=%d\n", ret); 1356 goto fail; 1357 } 1358 1359 return 0; 1360 1361 fail: 1362 brcmf_detach(dev); 1363 1364 return ret; 1365 } 1366 1367 void brcmf_bus_add_txhdrlen(struct device *dev, uint len) 1368 { 1369 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1370 struct brcmf_pub *drvr = bus_if->drvr; 1371 1372 if (drvr) { 1373 drvr->hdrlen += len; 1374 } 1375 } 1376 1377 void brcmf_dev_reset(struct device *dev) 1378 { 1379 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1380 struct brcmf_pub *drvr = bus_if->drvr; 1381 1382 if (drvr == NULL) 1383 return; 1384 1385 if (drvr->iflist[0]) 1386 brcmf_fil_cmd_int_set(drvr->iflist[0], BRCMF_C_TERMINATED, 1); 1387 } 1388 1389 void brcmf_dev_coredump(struct device *dev) 1390 { 1391 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1392 1393 if (brcmf_debug_create_memdump(bus_if, NULL, 0) < 0) 1394 brcmf_dbg(TRACE, "failed to create coredump\n"); 1395 } 1396 1397 void brcmf_fw_crashed(struct device *dev) 1398 { 1399 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1400 struct brcmf_pub *drvr = bus_if->drvr; 1401 1402 bphy_err(drvr, "Firmware has halted or crashed\n"); 1403 1404 brcmf_dev_coredump(dev); 1405 1406 schedule_work(&drvr->bus_reset); 1407 } 1408 1409 void brcmf_detach(struct device *dev) 1410 { 1411 s32 i; 1412 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1413 struct brcmf_pub *drvr = bus_if->drvr; 1414 1415 brcmf_dbg(TRACE, "Enter\n"); 1416 1417 if (drvr == NULL) 1418 return; 1419 1420 #ifdef CONFIG_INET 1421 unregister_inetaddr_notifier(&drvr->inetaddr_notifier); 1422 #endif 1423 1424 #if IS_ENABLED(CONFIG_IPV6) 1425 unregister_inet6addr_notifier(&drvr->inet6addr_notifier); 1426 #endif 1427 1428 brcmf_bus_change_state(bus_if, BRCMF_BUS_DOWN); 1429 /* make sure primary interface removed last */ 1430 for (i = BRCMF_MAX_IFS - 1; i > -1; i--) { 1431 if (drvr->iflist[i]) 1432 brcmf_remove_interface(drvr->iflist[i], false); 1433 } 1434 brcmf_bus_stop(drvr->bus_if); 1435 1436 brcmf_fweh_detach(drvr); 1437 brcmf_proto_detach(drvr); 1438 1439 if (drvr->mon_if) { 1440 brcmf_net_detach(drvr->mon_if->ndev, false); 1441 drvr->mon_if = NULL; 1442 } 1443 1444 if (drvr->config) { 1445 brcmf_p2p_detach(&drvr->config->p2p); 1446 brcmf_cfg80211_detach(drvr->config); 1447 drvr->config = NULL; 1448 } 1449 } 1450 1451 void brcmf_free(struct device *dev) 1452 { 1453 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1454 struct brcmf_pub *drvr = bus_if->drvr; 1455 1456 if (!drvr) 1457 return; 1458 1459 bus_if->drvr = NULL; 1460 1461 kfree(drvr->ops); 1462 1463 wiphy_free(drvr->wiphy); 1464 } 1465 1466 s32 brcmf_iovar_data_set(struct device *dev, char *name, void *data, u32 len) 1467 { 1468 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1469 struct brcmf_if *ifp = bus_if->drvr->iflist[0]; 1470 1471 return brcmf_fil_iovar_data_set(ifp, name, data, len); 1472 } 1473 1474 static int brcmf_get_pend_8021x_cnt(struct brcmf_if *ifp) 1475 { 1476 return atomic_read(&ifp->pend_8021x_cnt); 1477 } 1478 1479 int brcmf_netdev_wait_pend8021x(struct brcmf_if *ifp) 1480 { 1481 struct brcmf_pub *drvr = ifp->drvr; 1482 int err; 1483 1484 err = wait_event_timeout(ifp->pend_8021x_wait, 1485 !brcmf_get_pend_8021x_cnt(ifp), 1486 MAX_WAIT_FOR_8021X_TX); 1487 1488 if (!err) 1489 bphy_err(drvr, "Timed out waiting for no pending 802.1x packets\n"); 1490 1491 return !err; 1492 } 1493 1494 void brcmf_bus_change_state(struct brcmf_bus *bus, enum brcmf_bus_state state) 1495 { 1496 struct brcmf_pub *drvr = bus->drvr; 1497 struct net_device *ndev; 1498 int ifidx; 1499 1500 brcmf_dbg(TRACE, "%d -> %d\n", bus->state, state); 1501 1502 if (!drvr) { 1503 brcmf_dbg(INFO, "ignoring transition, bus not attached yet\n"); 1504 return; 1505 } 1506 1507 bus->state = state; 1508 1509 if (state == BRCMF_BUS_UP) { 1510 for (ifidx = 0; ifidx < BRCMF_MAX_IFS; ifidx++) { 1511 if ((drvr->iflist[ifidx]) && 1512 (drvr->iflist[ifidx]->ndev)) { 1513 ndev = drvr->iflist[ifidx]->ndev; 1514 if (netif_queue_stopped(ndev)) 1515 netif_wake_queue(ndev); 1516 } 1517 } 1518 } 1519 } 1520 1521 static void brcmf_driver_register(struct work_struct *work) 1522 { 1523 #ifdef CONFIG_BRCMFMAC_SDIO 1524 brcmf_sdio_register(); 1525 #endif 1526 #ifdef CONFIG_BRCMFMAC_USB 1527 brcmf_usb_register(); 1528 #endif 1529 #ifdef CONFIG_BRCMFMAC_PCIE 1530 brcmf_pcie_register(); 1531 #endif 1532 } 1533 static DECLARE_WORK(brcmf_driver_work, brcmf_driver_register); 1534 1535 int __init brcmf_core_init(void) 1536 { 1537 if (!schedule_work(&brcmf_driver_work)) 1538 return -EBUSY; 1539 1540 return 0; 1541 } 1542 1543 void __exit brcmf_core_exit(void) 1544 { 1545 cancel_work_sync(&brcmf_driver_work); 1546 1547 #ifdef CONFIG_BRCMFMAC_SDIO 1548 brcmf_sdio_exit(); 1549 #endif 1550 #ifdef CONFIG_BRCMFMAC_USB 1551 brcmf_usb_exit(); 1552 #endif 1553 #ifdef CONFIG_BRCMFMAC_PCIE 1554 brcmf_pcie_exit(); 1555 #endif 1556 } 1557 1558