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1// SPDX-License-Identifier: ISC2/*3 * Copyright (c) 2010 Broadcom Corporation4 */5 6#include <linux/kernel.h>7#include <linux/etherdevice.h>8#include <linux/module.h>9#include <linux/inetdevice.h>10#include <linux/property.h>11#include <net/cfg80211.h>12#include <net/rtnetlink.h>13#include <net/addrconf.h>14#include <net/ieee80211_radiotap.h>15#include <net/ipv6.h>16#include <brcmu_utils.h>17#include <brcmu_wifi.h>18 19#include "core.h"20#include "bus.h"21#include "fwvid.h"22#include "debug.h"23#include "fwil_types.h"24#include "p2p.h"25#include "pno.h"26#include "cfg80211.h"27#include "fwil.h"28#include "feature.h"29#include "proto.h"30#include "pcie.h"31#include "common.h"32 33#define MAX_WAIT_FOR_8021X_TX msecs_to_jiffies(950)34 35#define BRCMF_BSSIDX_INVALID -136 37#define RXS_PBPRES BIT(2)38 39#define D11_PHY_HDR_LEN 640 41struct d11rxhdr_le {42 __le16 RxFrameSize;43 u16 PAD;44 __le16 PhyRxStatus_0;45 __le16 PhyRxStatus_1;46 __le16 PhyRxStatus_2;47 __le16 PhyRxStatus_3;48 __le16 PhyRxStatus_4;49 __le16 PhyRxStatus_5;50 __le16 RxStatus1;51 __le16 RxStatus2;52 __le16 RxTSFTime;53 __le16 RxChan;54 u8 unknown[12];55} __packed;56 57struct wlc_d11rxhdr {58 struct d11rxhdr_le rxhdr;59 __le32 tsf_l;60 s8 rssi;61 s8 rxpwr0;62 s8 rxpwr1;63 s8 do_rssi_ma;64 s8 rxpwr[4];65} __packed;66 67char *brcmf_ifname(struct brcmf_if *ifp)68{69 if (!ifp)70 return "<if_null>";71 72 if (ifp->ndev)73 return ifp->ndev->name;74 75 return "<if_none>";76}77 78struct brcmf_if *brcmf_get_ifp(struct brcmf_pub *drvr, int ifidx)79{80 struct brcmf_if *ifp;81 s32 bsscfgidx;82 83 if (ifidx < 0 || ifidx >= BRCMF_MAX_IFS) {84 bphy_err(drvr, "ifidx %d out of range\n", ifidx);85 return NULL;86 }87 88 ifp = NULL;89 bsscfgidx = drvr->if2bss[ifidx];90 if (bsscfgidx >= 0)91 ifp = drvr->iflist[bsscfgidx];92 93 return ifp;94}95 96void brcmf_configure_arp_nd_offload(struct brcmf_if *ifp, bool enable)97{98 s32 err;99 u32 mode;100 101 if (enable)102 mode = BRCMF_ARP_OL_AGENT | BRCMF_ARP_OL_PEER_AUTO_REPLY;103 else104 mode = 0;105 106 /* Try to set and enable ARP offload feature, this may fail, then it */107 /* is simply not supported and err 0 will be returned */108 err = brcmf_fil_iovar_int_set(ifp, "arp_ol", mode);109 if (err) {110 brcmf_dbg(TRACE, "failed to set ARP offload mode to 0x%x, err = %d\n",111 mode, err);112 } else {113 err = brcmf_fil_iovar_int_set(ifp, "arpoe", enable);114 if (err) {115 brcmf_dbg(TRACE, "failed to configure (%d) ARP offload err = %d\n",116 enable, err);117 } else {118 brcmf_dbg(TRACE, "successfully configured (%d) ARP offload to 0x%x\n",119 enable, mode);120 }121 }122 123 err = brcmf_fil_iovar_int_set(ifp, "ndoe", enable);124 if (err) {125 brcmf_dbg(TRACE, "failed to configure (%d) ND offload err = %d\n",126 enable, err);127 } else {128 brcmf_dbg(TRACE, "successfully configured (%d) ND offload to 0x%x\n",129 enable, mode);130 }131}132 133static void _brcmf_set_multicast_list(struct work_struct *work)134{135 struct brcmf_if *ifp = container_of(work, struct brcmf_if,136 multicast_work);137 struct brcmf_pub *drvr = ifp->drvr;138 struct net_device *ndev;139 struct netdev_hw_addr *ha;140 u32 cmd_value, cnt;141 __le32 cnt_le;142 char *buf, *bufp;143 u32 buflen;144 s32 err;145 146 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx);147 148 ndev = ifp->ndev;149 150 /* Determine initial value of allmulti flag */151 cmd_value = (ndev->flags & IFF_ALLMULTI) ? true : false;152 153 /* Send down the multicast list first. */154 cnt = netdev_mc_count(ndev);155 buflen = sizeof(cnt) + (cnt * ETH_ALEN);156 buf = kmalloc(buflen, GFP_KERNEL);157 if (!buf)158 return;159 bufp = buf;160 161 cnt_le = cpu_to_le32(cnt);162 memcpy(bufp, &cnt_le, sizeof(cnt_le));163 bufp += sizeof(cnt_le);164 165 netdev_for_each_mc_addr(ha, ndev) {166 if (!cnt)167 break;168 memcpy(bufp, ha->addr, ETH_ALEN);169 bufp += ETH_ALEN;170 cnt--;171 }172 173 err = brcmf_fil_iovar_data_set(ifp, "mcast_list", buf, buflen);174 if (err < 0) {175 bphy_err(drvr, "Setting mcast_list failed, %d\n", err);176 cmd_value = cnt ? true : cmd_value;177 }178 179 kfree(buf);180 181 /*182 * Now send the allmulti setting. This is based on the setting in the183 * net_device flags, but might be modified above to be turned on if we184 * were trying to set some addresses and dongle rejected it...185 */186 err = brcmf_fil_iovar_int_set(ifp, "allmulti", cmd_value);187 if (err < 0)188 bphy_err(drvr, "Setting allmulti failed, %d\n", err);189 190 /*Finally, pick up the PROMISC flag */191 cmd_value = (ndev->flags & IFF_PROMISC) ? true : false;192 err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_PROMISC, cmd_value);193 if (err < 0) {194 /* PROMISC unsupported by firmware of older chips */195 if (err == -EBADE)196 bphy_info_once(drvr, "BRCMF_C_SET_PROMISC unsupported\n");197 else198 bphy_err(drvr, "Setting BRCMF_C_SET_PROMISC failed, err=%d\n",199 err);200 }201 brcmf_configure_arp_nd_offload(ifp, !cmd_value);202}203 204#if IS_ENABLED(CONFIG_IPV6)205static void _brcmf_update_ndtable(struct work_struct *work)206{207 struct brcmf_if *ifp = container_of(work, struct brcmf_if,208 ndoffload_work);209 struct brcmf_pub *drvr = ifp->drvr;210 int i, ret;211 212 /* clear the table in firmware */213 ret = brcmf_fil_iovar_data_set(ifp, "nd_hostip_clear", NULL, 0);214 if (ret) {215 brcmf_dbg(TRACE, "fail to clear nd ip table err:%d\n", ret);216 return;217 }218 219 for (i = 0; i < ifp->ipv6addr_idx; i++) {220 ret = brcmf_fil_iovar_data_set(ifp, "nd_hostip",221 &ifp->ipv6_addr_tbl[i],222 sizeof(struct in6_addr));223 if (ret)224 bphy_err(drvr, "add nd ip err %d\n", ret);225 }226}227#else228static void _brcmf_update_ndtable(struct work_struct *work)229{230}231#endif232 233static int brcmf_netdev_set_mac_address(struct net_device *ndev, void *addr)234{235 struct brcmf_if *ifp = netdev_priv(ndev);236 struct sockaddr *sa = (struct sockaddr *)addr;237 int err;238 239 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx);240 241 err = brcmf_c_set_cur_etheraddr(ifp, sa->sa_data);242 if (err >= 0) {243 brcmf_dbg(TRACE, "updated to %pM\n", sa->sa_data);244 memcpy(ifp->mac_addr, sa->sa_data, ETH_ALEN);245 eth_hw_addr_set(ifp->ndev, ifp->mac_addr);246 }247 return err;248}249 250static void brcmf_netdev_set_multicast_list(struct net_device *ndev)251{252 struct brcmf_if *ifp = netdev_priv(ndev);253 254 schedule_work(&ifp->multicast_work);255}256 257/**258 * brcmf_skb_is_iapp - checks if skb is an IAPP packet259 *260 * @skb: skb to check261 */262static bool brcmf_skb_is_iapp(struct sk_buff *skb)263{264 static const u8 iapp_l2_update_packet[6] __aligned(2) = {265 0x00, 0x01, 0xaf, 0x81, 0x01, 0x00,266 };267 unsigned char *eth_data;268#if !defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS)269 const u16 *a, *b;270#endif271 272 if (skb->len - skb->mac_len != 6 ||273 !is_multicast_ether_addr(eth_hdr(skb)->h_dest))274 return false;275 276 eth_data = skb_mac_header(skb) + ETH_HLEN;277#if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS)278 return !(((*(const u32 *)eth_data) ^ (*(const u32 *)iapp_l2_update_packet)) |279 ((*(const u16 *)(eth_data + 4)) ^ (*(const u16 *)(iapp_l2_update_packet + 4))));280#else281 a = (const u16 *)eth_data;282 b = (const u16 *)iapp_l2_update_packet;283 284 return !((a[0] ^ b[0]) | (a[1] ^ b[1]) | (a[2] ^ b[2]));285#endif286}287 288static netdev_tx_t brcmf_netdev_start_xmit(struct sk_buff *skb,289 struct net_device *ndev)290{291 int ret;292 struct brcmf_if *ifp = netdev_priv(ndev);293 struct brcmf_pub *drvr = ifp->drvr;294 struct ethhdr *eh;295 int head_delta;296 unsigned int tx_bytes = skb->len;297 298 brcmf_dbg(DATA, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx);299 300 /* Can the device send data? */301 if (drvr->bus_if->state != BRCMF_BUS_UP) {302 bphy_err(drvr, "xmit rejected state=%d\n", drvr->bus_if->state);303 netif_stop_queue(ndev);304 dev_kfree_skb(skb);305 ret = -ENODEV;306 goto done;307 }308 309 /* Some recent Broadcom's firmwares disassociate STA when they receive310 * an 802.11f ADD frame. This behavior can lead to a local DoS security311 * issue. Attacker may trigger disassociation of any STA by sending a312 * proper Ethernet frame to the wireless interface.313 *314 * Moreover this feature may break AP interfaces in some specific315 * setups. This applies e.g. to the bridge with hairpin mode enabled and316 * IFLA_BRPORT_MCAST_TO_UCAST set. IAPP packet generated by a firmware317 * will get passed back to the wireless interface and cause immediate318 * disassociation of a just-connected STA.319 */320 if (!drvr->settings->iapp && brcmf_skb_is_iapp(skb)) {321 dev_kfree_skb(skb);322 ret = -EINVAL;323 goto done;324 }325 326 /* Make sure there's enough writeable headroom */327 if (skb_headroom(skb) < drvr->hdrlen || skb_header_cloned(skb)) {328 head_delta = max_t(int, drvr->hdrlen - skb_headroom(skb), 0);329 330 brcmf_dbg(INFO, "%s: insufficient headroom (%d)\n",331 brcmf_ifname(ifp), head_delta);332 atomic_inc(&drvr->bus_if->stats.pktcowed);333 ret = pskb_expand_head(skb, ALIGN(head_delta, NET_SKB_PAD), 0,334 GFP_ATOMIC);335 if (ret < 0) {336 bphy_err(drvr, "%s: failed to expand headroom\n",337 brcmf_ifname(ifp));338 atomic_inc(&drvr->bus_if->stats.pktcow_failed);339 dev_kfree_skb(skb);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 367done:368 if (ret) {369 ndev->stats.tx_dropped++;370 } else {371 ndev->stats.tx_packets++;372 ndev->stats.tx_bytes += tx_bytes;373 }374 375 /* Return ok: we always eat the packet */376 return NETDEV_TX_OK;377}378 379void 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 403void brcmf_netif_rx(struct brcmf_if *ifp, struct sk_buff *skb)404{405 /* Most of Broadcom's firmwares send 802.11f ADD frame every time a new406 * STA connects to the AP interface. This is an obsoleted standard most407 * 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 netif_rx(skb);427}428 429void brcmf_netif_mon_rx(struct brcmf_if *ifp, struct sk_buff *skb)430{431 if (brcmf_feat_is_enabled(ifp, BRCMF_FEAT_MONITOR_FMT_RADIOTAP)) {432 /* Do nothing */433 } else if (brcmf_feat_is_enabled(ifp, BRCMF_FEAT_MONITOR_FMT_HW_RX_HDR)) {434 struct wlc_d11rxhdr *wlc_rxhdr = (struct wlc_d11rxhdr *)skb->data;435 struct ieee80211_radiotap_header *radiotap;436 unsigned int offset;437 u16 RxStatus1;438 439 RxStatus1 = le16_to_cpu(wlc_rxhdr->rxhdr.RxStatus1);440 441 offset = sizeof(struct wlc_d11rxhdr);442 /* MAC inserts 2 pad bytes for a4 headers or QoS or A-MSDU443 * subframes444 */445 if (RxStatus1 & RXS_PBPRES)446 offset += 2;447 offset += D11_PHY_HDR_LEN;448 449 skb_pull(skb, offset);450 451 /* TODO: use RX header to fill some radiotap data */452 radiotap = skb_push(skb, sizeof(*radiotap));453 memset(radiotap, 0, sizeof(*radiotap));454 radiotap->it_len = cpu_to_le16(sizeof(*radiotap));455 456 /* TODO: 4 bytes with receive status? */457 skb->len -= 4;458 } else {459 struct ieee80211_radiotap_header *radiotap;460 461 /* TODO: use RX status to fill some radiotap data */462 radiotap = skb_push(skb, sizeof(*radiotap));463 memset(radiotap, 0, sizeof(*radiotap));464 radiotap->it_len = cpu_to_le16(sizeof(*radiotap));465 466 /* TODO: 4 bytes with receive status? */467 skb->len -= 4;468 }469 470 skb->dev = ifp->ndev;471 skb_reset_mac_header(skb);472 skb->pkt_type = PACKET_OTHERHOST;473 skb->protocol = htons(ETH_P_802_2);474 475 brcmf_netif_rx(ifp, skb);476}477 478static int brcmf_rx_hdrpull(struct brcmf_pub *drvr, struct sk_buff *skb,479 struct brcmf_if **ifp)480{481 int ret;482 483 /* process and remove protocol-specific header */484 ret = brcmf_proto_hdrpull(drvr, true, skb, ifp);485 486 if (ret || !(*ifp) || !(*ifp)->ndev) {487 if (ret != -ENODATA && *ifp && (*ifp)->ndev)488 (*ifp)->ndev->stats.rx_errors++;489 brcmu_pkt_buf_free_skb(skb);490 return -ENODATA;491 }492 493 skb->protocol = eth_type_trans(skb, (*ifp)->ndev);494 return 0;495}496 497void brcmf_rx_frame(struct device *dev, struct sk_buff *skb, bool handle_event,498 bool inirq)499{500 struct brcmf_if *ifp;501 struct brcmf_bus *bus_if = dev_get_drvdata(dev);502 struct brcmf_pub *drvr = bus_if->drvr;503 504 brcmf_dbg(DATA, "Enter: %s: rxp=%p\n", dev_name(dev), skb);505 506 if (brcmf_rx_hdrpull(drvr, skb, &ifp))507 return;508 509 if (brcmf_proto_is_reorder_skb(skb)) {510 brcmf_proto_rxreorder(ifp, skb);511 } else {512 /* Process special event packets */513 if (handle_event) {514 gfp_t gfp = inirq ? GFP_ATOMIC : GFP_KERNEL;515 516 brcmf_fweh_process_skb(ifp->drvr, skb,517 BCMILCP_SUBTYPE_VENDOR_LONG, gfp);518 }519 brcmf_netif_rx(ifp, skb);520 }521}522 523void brcmf_rx_event(struct device *dev, struct sk_buff *skb)524{525 struct brcmf_if *ifp;526 struct brcmf_bus *bus_if = dev_get_drvdata(dev);527 struct brcmf_pub *drvr = bus_if->drvr;528 529 brcmf_dbg(EVENT, "Enter: %s: rxp=%p\n", dev_name(dev), skb);530 531 if (brcmf_rx_hdrpull(drvr, skb, &ifp))532 return;533 534 brcmf_fweh_process_skb(ifp->drvr, skb, 0, GFP_KERNEL);535 brcmu_pkt_buf_free_skb(skb);536}537 538void brcmf_txfinalize(struct brcmf_if *ifp, struct sk_buff *txp, bool success)539{540 struct ethhdr *eh;541 u16 type;542 543 eh = (struct ethhdr *)(txp->data);544 type = ntohs(eh->h_proto);545 546 if (type == ETH_P_PAE) {547 atomic_dec(&ifp->pend_8021x_cnt);548 if (waitqueue_active(&ifp->pend_8021x_wait))549 wake_up(&ifp->pend_8021x_wait);550 }551 552 if (!success)553 ifp->ndev->stats.tx_errors++;554 555 brcmu_pkt_buf_free_skb(txp);556}557 558static void brcmf_ethtool_get_drvinfo(struct net_device *ndev,559 struct ethtool_drvinfo *info)560{561 struct brcmf_if *ifp = netdev_priv(ndev);562 struct brcmf_pub *drvr = ifp->drvr;563 char drev[BRCMU_DOTREV_LEN] = "n/a";564 565 if (drvr->revinfo.result == 0)566 brcmu_dotrev_str(drvr->revinfo.driverrev, drev);567 strscpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));568 strscpy(info->version, drev, sizeof(info->version));569 strscpy(info->fw_version, drvr->fwver, sizeof(info->fw_version));570 strscpy(info->bus_info, dev_name(drvr->bus_if->dev),571 sizeof(info->bus_info));572}573 574static const struct ethtool_ops brcmf_ethtool_ops = {575 .get_drvinfo = brcmf_ethtool_get_drvinfo,576};577 578static int brcmf_netdev_stop(struct net_device *ndev)579{580 struct brcmf_if *ifp = netdev_priv(ndev);581 582 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx);583 584 brcmf_cfg80211_down(ndev);585 586 brcmf_net_setcarrier(ifp, false);587 588 return 0;589}590 591static int brcmf_netdev_open(struct net_device *ndev)592{593 struct brcmf_if *ifp = netdev_priv(ndev);594 struct brcmf_pub *drvr = ifp->drvr;595 struct brcmf_bus *bus_if = drvr->bus_if;596 u32 toe_ol;597 598 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx);599 600 /* If bus is not ready, can't continue */601 if (bus_if->state != BRCMF_BUS_UP) {602 bphy_err(drvr, "failed bus is not ready\n");603 return -EAGAIN;604 }605 606 atomic_set(&ifp->pend_8021x_cnt, 0);607 608 /* Get current TOE mode from dongle */609 if (brcmf_fil_iovar_int_get(ifp, "toe_ol", &toe_ol) >= 0610 && (toe_ol & TOE_TX_CSUM_OL) != 0)611 ndev->features |= NETIF_F_IP_CSUM;612 else613 ndev->features &= ~NETIF_F_IP_CSUM;614 615 if (brcmf_cfg80211_up(ndev)) {616 bphy_err(drvr, "failed to bring up cfg80211\n");617 return -EIO;618 }619 620 /* Clear, carrier, set when connected or AP mode. */621 netif_carrier_off(ndev);622 return 0;623}624 625static const struct net_device_ops brcmf_netdev_ops_pri = {626 .ndo_open = brcmf_netdev_open,627 .ndo_stop = brcmf_netdev_stop,628 .ndo_start_xmit = brcmf_netdev_start_xmit,629 .ndo_set_mac_address = brcmf_netdev_set_mac_address,630 .ndo_set_rx_mode = brcmf_netdev_set_multicast_list631};632 633int brcmf_net_attach(struct brcmf_if *ifp, bool locked)634{635 struct brcmf_pub *drvr = ifp->drvr;636 struct net_device *ndev;637 s32 err;638 639 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d mac=%pM\n", ifp->bsscfgidx,640 ifp->mac_addr);641 ndev = ifp->ndev;642 643 /* set appropriate operations */644 ndev->netdev_ops = &brcmf_netdev_ops_pri;645 646 ndev->needed_headroom += drvr->hdrlen;647 ndev->ethtool_ops = &brcmf_ethtool_ops;648 649 /* set the mac address & netns */650 eth_hw_addr_set(ndev, ifp->mac_addr);651 dev_net_set(ndev, wiphy_net(cfg_to_wiphy(drvr->config)));652 653 INIT_WORK(&ifp->multicast_work, _brcmf_set_multicast_list);654 INIT_WORK(&ifp->ndoffload_work, _brcmf_update_ndtable);655 656 if (locked)657 err = cfg80211_register_netdevice(ndev);658 else659 err = register_netdev(ndev);660 if (err != 0) {661 bphy_err(drvr, "couldn't register the net device\n");662 goto fail;663 }664 665 netif_carrier_off(ndev);666 667 ndev->priv_destructor = brcmf_cfg80211_free_netdev;668 brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name);669 return 0;670 671fail:672 drvr->iflist[ifp->bsscfgidx] = NULL;673 ndev->netdev_ops = NULL;674 return -EBADE;675}676 677void brcmf_net_detach(struct net_device *ndev, bool locked)678{679 if (ndev->reg_state == NETREG_REGISTERED) {680 if (locked)681 cfg80211_unregister_netdevice(ndev);682 else683 unregister_netdev(ndev);684 } else {685 brcmf_cfg80211_free_netdev(ndev);686 free_netdev(ndev);687 }688}689 690static int brcmf_net_mon_open(struct net_device *ndev)691{692 struct brcmf_if *ifp = netdev_priv(ndev);693 struct brcmf_pub *drvr = ifp->drvr;694 u32 monitor;695 int err;696 697 brcmf_dbg(TRACE, "Enter\n");698 699 err = brcmf_fil_cmd_int_get(ifp, BRCMF_C_GET_MONITOR, &monitor);700 if (err) {701 bphy_err(drvr, "BRCMF_C_GET_MONITOR error (%d)\n", err);702 return err;703 } else if (monitor) {704 bphy_err(drvr, "Monitor mode is already enabled\n");705 return -EEXIST;706 }707 708 monitor = 3;709 err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_MONITOR, monitor);710 if (err)711 bphy_err(drvr, "BRCMF_C_SET_MONITOR error (%d)\n", err);712 713 return err;714}715 716static int brcmf_net_mon_stop(struct net_device *ndev)717{718 struct brcmf_if *ifp = netdev_priv(ndev);719 struct brcmf_pub *drvr = ifp->drvr;720 u32 monitor;721 int err;722 723 brcmf_dbg(TRACE, "Enter\n");724 725 monitor = 0;726 err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_MONITOR, monitor);727 if (err)728 bphy_err(drvr, "BRCMF_C_SET_MONITOR error (%d)\n", err);729 730 return err;731}732 733static netdev_tx_t brcmf_net_mon_start_xmit(struct sk_buff *skb,734 struct net_device *ndev)735{736 dev_kfree_skb_any(skb);737 738 return NETDEV_TX_OK;739}740 741static const struct net_device_ops brcmf_netdev_ops_mon = {742 .ndo_open = brcmf_net_mon_open,743 .ndo_stop = brcmf_net_mon_stop,744 .ndo_start_xmit = brcmf_net_mon_start_xmit,745};746 747int brcmf_net_mon_attach(struct brcmf_if *ifp)748{749 struct brcmf_pub *drvr = ifp->drvr;750 struct net_device *ndev;751 int err;752 753 brcmf_dbg(TRACE, "Enter\n");754 755 ndev = ifp->ndev;756 ndev->netdev_ops = &brcmf_netdev_ops_mon;757 758 err = cfg80211_register_netdevice(ndev);759 if (err)760 bphy_err(drvr, "Failed to register %s device\n", ndev->name);761 762 return err;763}764 765void brcmf_net_setcarrier(struct brcmf_if *ifp, bool on)766{767 struct net_device *ndev;768 769 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d carrier=%d\n", ifp->bsscfgidx,770 on);771 772 ndev = ifp->ndev;773 brcmf_txflowblock_if(ifp, BRCMF_NETIF_STOP_REASON_DISCONNECTED, !on);774 if (on) {775 if (!netif_carrier_ok(ndev))776 netif_carrier_on(ndev);777 778 } else {779 if (netif_carrier_ok(ndev))780 netif_carrier_off(ndev);781 }782}783 784static int brcmf_net_p2p_open(struct net_device *ndev)785{786 brcmf_dbg(TRACE, "Enter\n");787 788 return brcmf_cfg80211_up(ndev);789}790 791static int brcmf_net_p2p_stop(struct net_device *ndev)792{793 brcmf_dbg(TRACE, "Enter\n");794 795 return brcmf_cfg80211_down(ndev);796}797 798static netdev_tx_t brcmf_net_p2p_start_xmit(struct sk_buff *skb,799 struct net_device *ndev)800{801 if (skb)802 dev_kfree_skb_any(skb);803 804 return NETDEV_TX_OK;805}806 807static const struct net_device_ops brcmf_netdev_ops_p2p = {808 .ndo_open = brcmf_net_p2p_open,809 .ndo_stop = brcmf_net_p2p_stop,810 .ndo_start_xmit = brcmf_net_p2p_start_xmit811};812 813static int brcmf_net_p2p_attach(struct brcmf_if *ifp)814{815 struct brcmf_pub *drvr = ifp->drvr;816 struct net_device *ndev;817 818 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d mac=%pM\n", ifp->bsscfgidx,819 ifp->mac_addr);820 ndev = ifp->ndev;821 822 ndev->netdev_ops = &brcmf_netdev_ops_p2p;823 824 /* set the mac address */825 eth_hw_addr_set(ndev, ifp->mac_addr);826 827 if (register_netdev(ndev) != 0) {828 bphy_err(drvr, "couldn't register the p2p net device\n");829 goto fail;830 }831 832 brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name);833 834 return 0;835 836fail:837 ifp->drvr->iflist[ifp->bsscfgidx] = NULL;838 ndev->netdev_ops = NULL;839 return -EBADE;840}841 842struct brcmf_if *brcmf_add_if(struct brcmf_pub *drvr, s32 bsscfgidx, s32 ifidx,843 bool is_p2pdev, const char *name, u8 *mac_addr)844{845 struct brcmf_if *ifp;846 struct net_device *ndev;847 848 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d, ifidx=%d\n", bsscfgidx, ifidx);849 850 ifp = drvr->iflist[bsscfgidx];851 /*852 * Delete the existing interface before overwriting it853 * in case we missed the BRCMF_E_IF_DEL event.854 */855 if (ifp) {856 if (ifidx) {857 bphy_err(drvr, "ERROR: netdev:%s already exists\n",858 ifp->ndev->name);859 netif_stop_queue(ifp->ndev);860 brcmf_net_detach(ifp->ndev, false);861 drvr->iflist[bsscfgidx] = NULL;862 } else {863 brcmf_dbg(INFO, "netdev:%s ignore IF event\n",864 ifp->ndev->name);865 return ERR_PTR(-EINVAL);866 }867 }868 869 if (!drvr->settings->p2p_enable && is_p2pdev) {870 /* this is P2P_DEVICE interface */871 brcmf_dbg(INFO, "allocate non-netdev interface\n");872 ifp = kzalloc(sizeof(*ifp), GFP_KERNEL);873 if (!ifp)874 return ERR_PTR(-ENOMEM);875 } else {876 brcmf_dbg(INFO, "allocate netdev interface\n");877 /* Allocate netdev, including space for private structure */878 ndev = alloc_netdev(sizeof(*ifp), is_p2pdev ? "p2p%d" : name,879 NET_NAME_UNKNOWN, ether_setup);880 if (!ndev)881 return ERR_PTR(-ENOMEM);882 883 ndev->needs_free_netdev = true;884 ifp = netdev_priv(ndev);885 ifp->ndev = ndev;886 /* store mapping ifidx to bsscfgidx */887 if (drvr->if2bss[ifidx] == BRCMF_BSSIDX_INVALID)888 drvr->if2bss[ifidx] = bsscfgidx;889 }890 891 ifp->drvr = drvr;892 drvr->iflist[bsscfgidx] = ifp;893 ifp->ifidx = ifidx;894 ifp->bsscfgidx = bsscfgidx;895 896 init_waitqueue_head(&ifp->pend_8021x_wait);897 spin_lock_init(&ifp->netif_stop_lock);898 899 if (mac_addr != NULL)900 memcpy(ifp->mac_addr, mac_addr, ETH_ALEN);901 902 brcmf_dbg(TRACE, " ==== pid:%x, if:%s (%pM) created ===\n",903 current->pid, name, ifp->mac_addr);904 905 return ifp;906}907 908static void brcmf_del_if(struct brcmf_pub *drvr, s32 bsscfgidx,909 bool locked)910{911 struct brcmf_if *ifp;912 int ifidx;913 914 ifp = drvr->iflist[bsscfgidx];915 if (!ifp) {916 bphy_err(drvr, "Null interface, bsscfgidx=%d\n", bsscfgidx);917 return;918 }919 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d, ifidx=%d\n", bsscfgidx,920 ifp->ifidx);921 ifidx = ifp->ifidx;922 923 if (ifp->ndev) {924 if (bsscfgidx == 0) {925 if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) {926 rtnl_lock();927 brcmf_netdev_stop(ifp->ndev);928 rtnl_unlock();929 }930 } else {931 netif_stop_queue(ifp->ndev);932 }933 934 if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) {935 cancel_work_sync(&ifp->multicast_work);936 cancel_work_sync(&ifp->ndoffload_work);937 }938 brcmf_net_detach(ifp->ndev, locked);939 } else {940 /* Only p2p device interfaces which get dynamically created941 * end up here. In this case the p2p module should be informed942 * about the removal of the interface within the firmware. If943 * not then p2p commands towards the firmware will cause some944 * serious troublesome side effects. The p2p module will clean945 * up the ifp if needed.946 */947 brcmf_p2p_ifp_removed(ifp, locked);948 kfree(ifp);949 }950 951 drvr->iflist[bsscfgidx] = NULL;952 if (drvr->if2bss[ifidx] == bsscfgidx)953 drvr->if2bss[ifidx] = BRCMF_BSSIDX_INVALID;954}955 956void brcmf_remove_interface(struct brcmf_if *ifp, bool locked)957{958 if (!ifp || WARN_ON(ifp->drvr->iflist[ifp->bsscfgidx] != ifp))959 return;960 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d, ifidx=%d\n", ifp->bsscfgidx,961 ifp->ifidx);962 brcmf_proto_del_if(ifp->drvr, ifp);963 brcmf_del_if(ifp->drvr, ifp->bsscfgidx, locked);964}965 966static int brcmf_psm_watchdog_notify(struct brcmf_if *ifp,967 const struct brcmf_event_msg *evtmsg,968 void *data)969{970 struct brcmf_pub *drvr = ifp->drvr;971 int err;972 973 brcmf_dbg(TRACE, "enter: bsscfgidx=%d\n", ifp->bsscfgidx);974 975 bphy_err(drvr, "PSM's watchdog has fired!\n");976 977 err = brcmf_debug_create_memdump(ifp->drvr->bus_if, data,978 evtmsg->datalen);979 if (err)980 bphy_err(drvr, "Failed to get memory dump, %d\n", err);981 982 return err;983}984 985#ifdef CONFIG_INET986#define ARPOL_MAX_ENTRIES 8987static int brcmf_inetaddr_changed(struct notifier_block *nb,988 unsigned long action, void *data)989{990 struct brcmf_pub *drvr = container_of(nb, struct brcmf_pub,991 inetaddr_notifier);992 struct in_ifaddr *ifa = data;993 struct net_device *ndev = ifa->ifa_dev->dev;994 struct brcmf_if *ifp;995 int idx, i, ret;996 u32 val;997 __be32 addr_table[ARPOL_MAX_ENTRIES] = {0};998 999 /* Find out if the notification is meant for us */1000 for (idx = 0; idx < BRCMF_MAX_IFS; idx++) {1001 ifp = drvr->iflist[idx];1002 if (ifp && ifp->ndev == ndev)1003 break;1004 if (idx == BRCMF_MAX_IFS - 1)1005 return NOTIFY_DONE;1006 }1007 1008 /* check if arp offload is supported */1009 ret = brcmf_fil_iovar_int_get(ifp, "arpoe", &val);1010 if (ret)1011 return NOTIFY_OK;1012 1013 /* old version only support primary index */1014 ret = brcmf_fil_iovar_int_get(ifp, "arp_version", &val);1015 if (ret)1016 val = 1;1017 if (val == 1)1018 ifp = drvr->iflist[0];1019 1020 /* retrieve the table from firmware */1021 ret = brcmf_fil_iovar_data_get(ifp, "arp_hostip", addr_table,1022 sizeof(addr_table));1023 if (ret) {1024 bphy_err(drvr, "fail to get arp ip table err:%d\n", ret);1025 return NOTIFY_OK;1026 }1027 1028 for (i = 0; i < ARPOL_MAX_ENTRIES; i++)1029 if (ifa->ifa_address == addr_table[i])1030 break;1031 1032 switch (action) {1033 case NETDEV_UP:1034 if (i == ARPOL_MAX_ENTRIES) {1035 brcmf_dbg(TRACE, "add %pI4 to arp table\n",1036 &ifa->ifa_address);1037 /* set it directly */1038 ret = brcmf_fil_iovar_data_set(ifp, "arp_hostip",1039 &ifa->ifa_address, sizeof(ifa->ifa_address));1040 if (ret)1041 bphy_err(drvr, "add arp ip err %d\n", ret);1042 }1043 break;1044 case NETDEV_DOWN:1045 if (i < ARPOL_MAX_ENTRIES) {1046 addr_table[i] = 0;1047 brcmf_dbg(TRACE, "remove %pI4 from arp table\n",1048 &ifa->ifa_address);1049 /* clear the table in firmware */1050 ret = brcmf_fil_iovar_data_set(ifp, "arp_hostip_clear",1051 NULL, 0);1052 if (ret) {1053 bphy_err(drvr, "fail to clear arp ip table err:%d\n",1054 ret);1055 return NOTIFY_OK;1056 }1057 for (i = 0; i < ARPOL_MAX_ENTRIES; i++) {1058 if (addr_table[i] == 0)1059 continue;1060 ret = brcmf_fil_iovar_data_set(ifp, "arp_hostip",1061 &addr_table[i],1062 sizeof(addr_table[i]));1063 if (ret)1064 bphy_err(drvr, "add arp ip err %d\n",1065 ret);1066 }1067 }1068 break;1069 default:1070 break;1071 }1072 1073 return NOTIFY_OK;1074}1075#endif1076 1077#if IS_ENABLED(CONFIG_IPV6)1078static int brcmf_inet6addr_changed(struct notifier_block *nb,1079 unsigned long action, void *data)1080{1081 struct brcmf_pub *drvr = container_of(nb, struct brcmf_pub,1082 inet6addr_notifier);1083 struct inet6_ifaddr *ifa = data;1084 struct brcmf_if *ifp;1085 int i;1086 struct in6_addr *table;1087 1088 /* Only handle primary interface */1089 ifp = drvr->iflist[0];1090 if (!ifp)1091 return NOTIFY_DONE;1092 if (ifp->ndev != ifa->idev->dev)1093 return NOTIFY_DONE;1094 1095 table = ifp->ipv6_addr_tbl;1096 for (i = 0; i < NDOL_MAX_ENTRIES; i++)1097 if (ipv6_addr_equal(&ifa->addr, &table[i]))1098 break;1099 1100 switch (action) {1101 case NETDEV_UP:1102 if (i == NDOL_MAX_ENTRIES) {1103 if (ifp->ipv6addr_idx < NDOL_MAX_ENTRIES) {1104 table[ifp->ipv6addr_idx++] = ifa->addr;1105 } else {1106 for (i = 0; i < NDOL_MAX_ENTRIES - 1; i++)1107 table[i] = table[i + 1];1108 table[NDOL_MAX_ENTRIES - 1] = ifa->addr;1109 }1110 }1111 break;1112 case NETDEV_DOWN:1113 if (i < NDOL_MAX_ENTRIES) {1114 for (; i < ifp->ipv6addr_idx - 1; i++)1115 table[i] = table[i + 1];1116 memset(&table[i], 0, sizeof(table[i]));1117 ifp->ipv6addr_idx--;1118 }1119 break;1120 default:1121 break;1122 }1123 1124 schedule_work(&ifp->ndoffload_work);1125 1126 return NOTIFY_OK;1127}1128#endif1129 1130static int brcmf_revinfo_read(struct seq_file *s, void *data)1131{1132 struct brcmf_bus *bus_if = dev_get_drvdata(s->private);1133 struct brcmf_rev_info *ri = &bus_if->drvr->revinfo;1134 char drev[BRCMU_DOTREV_LEN];1135 char brev[BRCMU_BOARDREV_LEN];1136 1137 seq_printf(s, "vendorid: 0x%04x\n", ri->vendorid);1138 seq_printf(s, "deviceid: 0x%04x\n", ri->deviceid);1139 seq_printf(s, "radiorev: %s\n", brcmu_dotrev_str(ri->radiorev, drev));1140 seq_printf(s, "chip: %s (%s)\n", ri->chipname,1141 brcmf_fwvid_vendor_name(bus_if->drvr));1142 seq_printf(s, "chippkg: %u\n", ri->chippkg);1143 seq_printf(s, "corerev: %u\n", ri->corerev);1144 seq_printf(s, "boardid: 0x%04x\n", ri->boardid);1145 seq_printf(s, "boardvendor: 0x%04x\n", ri->boardvendor);1146 seq_printf(s, "boardrev: %s\n", brcmu_boardrev_str(ri->boardrev, brev));1147 seq_printf(s, "driverrev: %s\n", brcmu_dotrev_str(ri->driverrev, drev));1148 seq_printf(s, "ucoderev: %u\n", ri->ucoderev);1149 seq_printf(s, "bus: %u\n", ri->bus);1150 seq_printf(s, "phytype: %u\n", ri->phytype);1151 seq_printf(s, "phyrev: %u\n", ri->phyrev);1152 seq_printf(s, "anarev: %u\n", ri->anarev);1153 seq_printf(s, "nvramrev: %08x\n", ri->nvramrev);1154 1155 seq_printf(s, "clmver: %s\n", bus_if->drvr->clmver);1156 1157 return 0;1158}1159 1160static void brcmf_core_bus_reset(struct work_struct *work)1161{1162 struct brcmf_pub *drvr = container_of(work, struct brcmf_pub,1163 bus_reset);1164 1165 brcmf_bus_reset(drvr->bus_if);1166}1167 1168static ssize_t bus_reset_write(struct file *file, const char __user *user_buf,1169 size_t count, loff_t *ppos)1170{1171 struct brcmf_pub *drvr = file->private_data;1172 u8 value;1173 1174 if (kstrtou8_from_user(user_buf, count, 0, &value))1175 return -EINVAL;1176 1177 if (value != 1)1178 return -EINVAL;1179 1180 schedule_work(&drvr->bus_reset);1181 1182 return count;1183}1184 1185static const struct file_operations bus_reset_fops = {1186 .open = simple_open,1187 .write = bus_reset_write,1188};1189 1190static int brcmf_bus_started(struct brcmf_pub *drvr, struct cfg80211_ops *ops)1191{1192 int ret = -1;1193 struct brcmf_bus *bus_if = drvr->bus_if;1194 struct brcmf_if *ifp;1195 struct brcmf_if *p2p_ifp;1196 1197 brcmf_dbg(TRACE, "\n");1198 1199 /* add primary networking interface */1200 ifp = brcmf_add_if(drvr, 0, 0, false, "wlan%d",1201 is_valid_ether_addr(drvr->settings->mac) ? drvr->settings->mac : NULL);1202 if (IS_ERR(ifp))1203 return PTR_ERR(ifp);1204 1205 p2p_ifp = NULL;1206 1207 /* signal bus ready */1208 brcmf_bus_change_state(bus_if, BRCMF_BUS_UP);1209 1210 /* do bus specific preinit here */1211 ret = brcmf_bus_preinit(bus_if);1212 if (ret < 0)1213 goto fail;1214 1215 /* Bus is ready, do any initialization */1216 ret = brcmf_c_preinit_dcmds(ifp);1217 if (ret < 0)1218 goto fail;1219 1220 brcmf_feat_attach(drvr);1221 1222 ret = brcmf_proto_init_done(drvr);1223 if (ret < 0)1224 goto fail;1225 1226 brcmf_proto_add_if(drvr, ifp);1227 1228 drvr->config = brcmf_cfg80211_attach(drvr, ops,1229 drvr->settings->p2p_enable);1230 if (drvr->config == NULL) {1231 ret = -ENOMEM;1232 goto fail;1233 }1234 1235 ret = brcmf_net_attach(ifp, false);1236 1237 if ((!ret) && (drvr->settings->p2p_enable)) {1238 p2p_ifp = drvr->iflist[1];1239 if (p2p_ifp)1240 ret = brcmf_net_p2p_attach(p2p_ifp);1241 }1242 1243 if (ret)1244 goto fail;1245 1246#ifdef CONFIG_INET1247 drvr->inetaddr_notifier.notifier_call = brcmf_inetaddr_changed;1248 ret = register_inetaddr_notifier(&drvr->inetaddr_notifier);1249 if (ret)1250 goto fail;1251 1252#if IS_ENABLED(CONFIG_IPV6)1253 drvr->inet6addr_notifier.notifier_call = brcmf_inet6addr_changed;1254 ret = register_inet6addr_notifier(&drvr->inet6addr_notifier);1255 if (ret) {1256 unregister_inetaddr_notifier(&drvr->inetaddr_notifier);1257 goto fail;1258 }1259#endif1260#endif /* CONFIG_INET */1261 1262 INIT_WORK(&drvr->bus_reset, brcmf_core_bus_reset);1263 1264 /* populate debugfs */1265 brcmf_debugfs_add_entry(drvr, "revinfo", brcmf_revinfo_read);1266 debugfs_create_file("reset", 0600, brcmf_debugfs_get_devdir(drvr), drvr,1267 &bus_reset_fops);1268 brcmf_feat_debugfs_create(drvr);1269 brcmf_proto_debugfs_create(drvr);1270 brcmf_bus_debugfs_create(bus_if);1271 1272 return 0;1273 1274fail:1275 bphy_err(drvr, "failed: %d\n", ret);1276 if (drvr->config) {1277 brcmf_cfg80211_detach(drvr->config);1278 drvr->config = NULL;1279 }1280 brcmf_net_detach(ifp->ndev, false);1281 if (p2p_ifp)1282 brcmf_net_detach(p2p_ifp->ndev, false);1283 drvr->iflist[0] = NULL;1284 drvr->iflist[1] = NULL;1285 if (drvr->settings->ignore_probe_fail)1286 ret = 0;1287 1288 return ret;1289}1290 1291int brcmf_alloc(struct device *dev, struct brcmf_mp_device *settings)1292{1293 struct wiphy *wiphy;1294 struct cfg80211_ops *ops;1295 struct brcmf_pub *drvr = NULL;1296 1297 brcmf_dbg(TRACE, "Enter\n");1298 1299 ops = brcmf_cfg80211_get_ops(settings);1300 if (!ops)1301 return -ENOMEM;1302 1303 wiphy = wiphy_new(ops, sizeof(*drvr));1304 if (!wiphy) {1305 kfree(ops);1306 return -ENOMEM;1307 }1308 1309 set_wiphy_dev(wiphy, dev);1310 drvr = wiphy_priv(wiphy);1311 drvr->wiphy = wiphy;1312 drvr->ops = ops;1313 drvr->bus_if = dev_get_drvdata(dev);1314 drvr->bus_if->drvr = drvr;1315 drvr->settings = settings;1316 1317 return 0;1318}1319 1320int brcmf_attach(struct device *dev)1321{1322 struct brcmf_bus *bus_if = dev_get_drvdata(dev);1323 struct brcmf_pub *drvr = bus_if->drvr;1324 int ret = 0;1325 int i;1326 1327 brcmf_dbg(TRACE, "Enter\n");1328 1329 for (i = 0; i < ARRAY_SIZE(drvr->if2bss); i++)1330 drvr->if2bss[i] = BRCMF_BSSIDX_INVALID;1331 1332 mutex_init(&drvr->proto_block);1333 1334 /* Link to bus module */1335 drvr->hdrlen = 0;1336 1337 ret = brcmf_fwvid_attach(drvr);1338 if (ret != 0) {1339 bphy_err(drvr, "brcmf_fwvid_attach failed\n");1340 goto fail;1341 }1342 1343 /* Attach and link in the protocol */1344 ret = brcmf_proto_attach(drvr);1345 if (ret != 0) {1346 bphy_err(drvr, "brcmf_prot_attach failed\n");1347 goto fail;1348 }1349 1350 /* attach firmware event handler */1351 ret = brcmf_fweh_attach(drvr);1352 if (ret != 0) {1353 bphy_err(drvr, "brcmf_fweh_attach failed\n");1354 goto fail;1355 }1356 1357 /* Attach to events important for core code */1358 brcmf_fweh_register(drvr, BRCMF_E_PSM_WATCHDOG,1359 brcmf_psm_watchdog_notify);1360 1361 ret = brcmf_bus_started(drvr, drvr->ops);1362 if (ret != 0) {1363 bphy_err(drvr, "dongle is not responding: err=%d\n", ret);1364 goto fail;1365 }1366 1367 return 0;1368 1369fail:1370 brcmf_detach(dev);1371 1372 return ret;1373}1374 1375void brcmf_bus_add_txhdrlen(struct device *dev, uint len)1376{1377 struct brcmf_bus *bus_if = dev_get_drvdata(dev);1378 struct brcmf_pub *drvr = bus_if->drvr;1379 1380 if (drvr) {1381 drvr->hdrlen += len;1382 }1383}1384 1385void brcmf_dev_reset(struct device *dev)1386{1387 struct brcmf_bus *bus_if = dev_get_drvdata(dev);1388 struct brcmf_pub *drvr = bus_if->drvr;1389 1390 if (drvr == NULL)1391 return;1392 1393 if (drvr->iflist[0])1394 brcmf_fil_cmd_int_set(drvr->iflist[0], BRCMF_C_TERMINATED, 1);1395}1396 1397void brcmf_dev_coredump(struct device *dev)1398{1399 struct brcmf_bus *bus_if = dev_get_drvdata(dev);1400 1401 if (brcmf_debug_create_memdump(bus_if, NULL, 0) < 0)1402 brcmf_dbg(TRACE, "failed to create coredump\n");1403}1404 1405void brcmf_fw_crashed(struct device *dev)1406{1407 struct brcmf_bus *bus_if = dev_get_drvdata(dev);1408 struct brcmf_pub *drvr = bus_if->drvr;1409 1410 bphy_err(drvr, "Firmware has halted or crashed\n");1411 1412 brcmf_dev_coredump(dev);1413 1414 if (drvr->bus_reset.func)1415 schedule_work(&drvr->bus_reset);1416}1417 1418void brcmf_detach(struct device *dev)1419{1420 s32 i;1421 struct brcmf_bus *bus_if = dev_get_drvdata(dev);1422 struct brcmf_pub *drvr = bus_if->drvr;1423 1424 brcmf_dbg(TRACE, "Enter\n");1425 1426 if (drvr == NULL)1427 return;1428 1429#ifdef CONFIG_INET1430 unregister_inetaddr_notifier(&drvr->inetaddr_notifier);1431#endif1432 1433#if IS_ENABLED(CONFIG_IPV6)1434 unregister_inet6addr_notifier(&drvr->inet6addr_notifier);1435#endif1436 1437 brcmf_bus_change_state(bus_if, BRCMF_BUS_DOWN);1438 /* make sure primary interface removed last */1439 for (i = BRCMF_MAX_IFS - 1; i > -1; i--) {1440 if (drvr->iflist[i])1441 brcmf_remove_interface(drvr->iflist[i], false);1442 }1443 brcmf_bus_stop(drvr->bus_if);1444 1445 brcmf_fweh_detach(drvr);1446 brcmf_proto_detach(drvr);1447 1448 if (drvr->mon_if) {1449 brcmf_net_detach(drvr->mon_if->ndev, false);1450 drvr->mon_if = NULL;1451 }1452 1453 if (drvr->config) {1454 brcmf_p2p_detach(&drvr->config->p2p);1455 brcmf_cfg80211_detach(drvr->config);1456 drvr->config = NULL;1457 }1458 1459 brcmf_fwvid_detach(drvr);1460}1461 1462void brcmf_free(struct device *dev)1463{1464 struct brcmf_bus *bus_if = dev_get_drvdata(dev);1465 struct brcmf_pub *drvr = bus_if->drvr;1466 1467 if (!drvr)1468 return;1469 1470 bus_if->drvr = NULL;1471 1472 kfree(drvr->ops);1473 1474 wiphy_free(drvr->wiphy);1475}1476 1477s32 brcmf_iovar_data_set(struct device *dev, char *name, void *data, u32 len)1478{1479 struct brcmf_bus *bus_if = dev_get_drvdata(dev);1480 struct brcmf_if *ifp = bus_if->drvr->iflist[0];1481 1482 return brcmf_fil_iovar_data_set(ifp, name, data, len);1483}1484 1485static int brcmf_get_pend_8021x_cnt(struct brcmf_if *ifp)1486{1487 return atomic_read(&ifp->pend_8021x_cnt);1488}1489 1490int brcmf_netdev_wait_pend8021x(struct brcmf_if *ifp)1491{1492 struct brcmf_pub *drvr = ifp->drvr;1493 int err;1494 1495 err = wait_event_timeout(ifp->pend_8021x_wait,1496 !brcmf_get_pend_8021x_cnt(ifp),1497 MAX_WAIT_FOR_8021X_TX);1498 1499 if (!err) {1500 bphy_err(drvr, "Timed out waiting for no pending 802.1x packets\n");1501 atomic_set(&ifp->pend_8021x_cnt, 0);1502 }1503 1504 return !err;1505}1506 1507void brcmf_bus_change_state(struct brcmf_bus *bus, enum brcmf_bus_state state)1508{1509 struct brcmf_pub *drvr = bus->drvr;1510 struct net_device *ndev;1511 int ifidx;1512 1513 brcmf_dbg(TRACE, "%d -> %d\n", bus->state, state);1514 1515 if (!drvr) {1516 brcmf_dbg(INFO, "ignoring transition, bus not attached yet\n");1517 return;1518 }1519 1520 bus->state = state;1521 1522 if (state == BRCMF_BUS_UP) {1523 for (ifidx = 0; ifidx < BRCMF_MAX_IFS; ifidx++) {1524 if ((drvr->iflist[ifidx]) &&1525 (drvr->iflist[ifidx]->ndev)) {1526 ndev = drvr->iflist[ifidx]->ndev;1527 if (netif_queue_stopped(ndev))1528 netif_wake_queue(ndev);1529 }1530 }1531 }1532}1533 1534int __init brcmf_core_init(void)1535{1536 int err;1537 1538 err = brcmf_sdio_register();1539 if (err)1540 return err;1541 1542 err = brcmf_usb_register();1543 if (err)1544 goto error_usb_register;1545 1546 err = brcmf_pcie_register();1547 if (err)1548 goto error_pcie_register;1549 return 0;1550 1551error_pcie_register:1552 brcmf_usb_exit();1553error_usb_register:1554 brcmf_sdio_exit();1555 return err;1556}1557 1558void __exit brcmf_core_exit(void)1559{1560 brcmf_sdio_exit();1561 brcmf_usb_exit();1562 brcmf_pcie_exit();1563}1564 1565