| /* |
| * Copyright (c) 2010 Broadcom Corporation |
| * |
| * Permission to use, copy, modify, and/or distribute this software for any |
| * purpose with or without fee is hereby granted, provided that the above |
| * copyright notice and this permission notice appear in all copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
| * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION |
| * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN |
| * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| */ |
| |
| #include <linux/kernel.h> |
| #include <linux/etherdevice.h> |
| #include <linux/module.h> |
| #include <net/cfg80211.h> |
| #include <net/rtnetlink.h> |
| #include <brcmu_utils.h> |
| #include <brcmu_wifi.h> |
| |
| #include "dhd.h" |
| #include "dhd_bus.h" |
| #include "dhd_proto.h" |
| #include "dhd_dbg.h" |
| #include "fwil_types.h" |
| #include "p2p.h" |
| #include "wl_cfg80211.h" |
| #include "fwil.h" |
| #include "fwsignal.h" |
| |
| MODULE_AUTHOR("Broadcom Corporation"); |
| MODULE_DESCRIPTION("Broadcom 802.11 wireless LAN fullmac driver."); |
| MODULE_LICENSE("Dual BSD/GPL"); |
| |
| #define MAX_WAIT_FOR_8021X_TX 50 /* msecs */ |
| |
| /* Error bits */ |
| int brcmf_msg_level; |
| module_param_named(debug, brcmf_msg_level, int, S_IRUSR | S_IWUSR); |
| MODULE_PARM_DESC(debug, "level of debug output"); |
| |
| /* P2P0 enable */ |
| static int brcmf_p2p_enable; |
| #ifdef CONFIG_BRCMDBG |
| module_param_named(p2pon, brcmf_p2p_enable, int, 0); |
| MODULE_PARM_DESC(p2pon, "enable p2p management functionality"); |
| #endif |
| |
| char *brcmf_ifname(struct brcmf_pub *drvr, int ifidx) |
| { |
| if (ifidx < 0 || ifidx >= BRCMF_MAX_IFS) { |
| brcmf_err("ifidx %d out of range\n", ifidx); |
| return "<if_bad>"; |
| } |
| |
| if (drvr->iflist[ifidx] == NULL) { |
| brcmf_err("null i/f %d\n", ifidx); |
| return "<if_null>"; |
| } |
| |
| if (drvr->iflist[ifidx]->ndev) |
| return drvr->iflist[ifidx]->ndev->name; |
| |
| return "<if_none>"; |
| } |
| |
| static void _brcmf_set_multicast_list(struct work_struct *work) |
| { |
| struct brcmf_if *ifp; |
| struct net_device *ndev; |
| struct netdev_hw_addr *ha; |
| u32 cmd_value, cnt; |
| __le32 cnt_le; |
| char *buf, *bufp; |
| u32 buflen; |
| s32 err; |
| |
| ifp = container_of(work, struct brcmf_if, multicast_work); |
| |
| brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx); |
| |
| ndev = ifp->ndev; |
| |
| /* Determine initial value of allmulti flag */ |
| cmd_value = (ndev->flags & IFF_ALLMULTI) ? true : false; |
| |
| /* Send down the multicast list first. */ |
| cnt = netdev_mc_count(ndev); |
| buflen = sizeof(cnt) + (cnt * ETH_ALEN); |
| buf = kmalloc(buflen, GFP_ATOMIC); |
| if (!buf) |
| return; |
| bufp = buf; |
| |
| cnt_le = cpu_to_le32(cnt); |
| memcpy(bufp, &cnt_le, sizeof(cnt_le)); |
| bufp += sizeof(cnt_le); |
| |
| netdev_for_each_mc_addr(ha, ndev) { |
| if (!cnt) |
| break; |
| memcpy(bufp, ha->addr, ETH_ALEN); |
| bufp += ETH_ALEN; |
| cnt--; |
| } |
| |
| err = brcmf_fil_iovar_data_set(ifp, "mcast_list", buf, buflen); |
| if (err < 0) { |
| brcmf_err("Setting mcast_list failed, %d\n", err); |
| cmd_value = cnt ? true : cmd_value; |
| } |
| |
| kfree(buf); |
| |
| /* |
| * Now send the allmulti setting. This is based on the setting in the |
| * net_device flags, but might be modified above to be turned on if we |
| * were trying to set some addresses and dongle rejected it... |
| */ |
| err = brcmf_fil_iovar_int_set(ifp, "allmulti", cmd_value); |
| if (err < 0) |
| brcmf_err("Setting allmulti failed, %d\n", err); |
| |
| /*Finally, pick up the PROMISC flag */ |
| cmd_value = (ndev->flags & IFF_PROMISC) ? true : false; |
| err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_PROMISC, cmd_value); |
| if (err < 0) |
| brcmf_err("Setting BRCMF_C_SET_PROMISC failed, %d\n", |
| err); |
| } |
| |
| static void |
| _brcmf_set_mac_address(struct work_struct *work) |
| { |
| struct brcmf_if *ifp; |
| s32 err; |
| |
| ifp = container_of(work, struct brcmf_if, setmacaddr_work); |
| |
| brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx); |
| |
| err = brcmf_fil_iovar_data_set(ifp, "cur_etheraddr", ifp->mac_addr, |
| ETH_ALEN); |
| if (err < 0) { |
| brcmf_err("Setting cur_etheraddr failed, %d\n", err); |
| } else { |
| brcmf_dbg(TRACE, "MAC address updated to %pM\n", |
| ifp->mac_addr); |
| memcpy(ifp->ndev->dev_addr, ifp->mac_addr, ETH_ALEN); |
| } |
| } |
| |
| static int brcmf_netdev_set_mac_address(struct net_device *ndev, void *addr) |
| { |
| struct brcmf_if *ifp = netdev_priv(ndev); |
| struct sockaddr *sa = (struct sockaddr *)addr; |
| |
| memcpy(&ifp->mac_addr, sa->sa_data, ETH_ALEN); |
| schedule_work(&ifp->setmacaddr_work); |
| return 0; |
| } |
| |
| static void brcmf_netdev_set_multicast_list(struct net_device *ndev) |
| { |
| struct brcmf_if *ifp = netdev_priv(ndev); |
| |
| schedule_work(&ifp->multicast_work); |
| } |
| |
| static netdev_tx_t brcmf_netdev_start_xmit(struct sk_buff *skb, |
| struct net_device *ndev) |
| { |
| int ret; |
| struct brcmf_if *ifp = netdev_priv(ndev); |
| struct brcmf_pub *drvr = ifp->drvr; |
| struct ethhdr *eh; |
| |
| brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx); |
| |
| /* Can the device send data? */ |
| if (drvr->bus_if->state != BRCMF_BUS_DATA) { |
| brcmf_err("xmit rejected state=%d\n", drvr->bus_if->state); |
| netif_stop_queue(ndev); |
| dev_kfree_skb(skb); |
| ret = -ENODEV; |
| goto done; |
| } |
| |
| if (!drvr->iflist[ifp->bssidx]) { |
| brcmf_err("bad ifidx %d\n", ifp->bssidx); |
| netif_stop_queue(ndev); |
| dev_kfree_skb(skb); |
| ret = -ENODEV; |
| goto done; |
| } |
| |
| /* Make sure there's enough room for any header */ |
| if (skb_headroom(skb) < drvr->hdrlen) { |
| struct sk_buff *skb2; |
| |
| brcmf_dbg(INFO, "%s: insufficient headroom\n", |
| brcmf_ifname(drvr, ifp->bssidx)); |
| drvr->bus_if->tx_realloc++; |
| skb2 = skb_realloc_headroom(skb, drvr->hdrlen); |
| dev_kfree_skb(skb); |
| skb = skb2; |
| if (skb == NULL) { |
| brcmf_err("%s: skb_realloc_headroom failed\n", |
| brcmf_ifname(drvr, ifp->bssidx)); |
| ret = -ENOMEM; |
| goto done; |
| } |
| } |
| |
| /* validate length for ether packet */ |
| if (skb->len < sizeof(*eh)) { |
| ret = -EINVAL; |
| dev_kfree_skb(skb); |
| goto done; |
| } |
| |
| /* handle ethernet header */ |
| eh = (struct ethhdr *)(skb->data); |
| if (is_multicast_ether_addr(eh->h_dest)) |
| drvr->tx_multicast++; |
| if (ntohs(eh->h_proto) == ETH_P_PAE) |
| atomic_inc(&ifp->pend_8021x_cnt); |
| |
| /* If the protocol uses a data header, apply it */ |
| brcmf_proto_hdrpush(drvr, ifp->ifidx, 0, skb); |
| |
| /* Use bus module to send data frame */ |
| ret = brcmf_bus_txdata(drvr->bus_if, skb); |
| |
| done: |
| if (ret) { |
| ifp->stats.tx_dropped++; |
| } else { |
| ifp->stats.tx_packets++; |
| ifp->stats.tx_bytes += skb->len; |
| } |
| |
| /* Return ok: we always eat the packet */ |
| return NETDEV_TX_OK; |
| } |
| |
| void brcmf_txflowblock(struct device *dev, bool state) |
| { |
| struct net_device *ndev; |
| struct brcmf_bus *bus_if = dev_get_drvdata(dev); |
| struct brcmf_pub *drvr = bus_if->drvr; |
| int i; |
| |
| brcmf_dbg(TRACE, "Enter\n"); |
| |
| for (i = 0; i < BRCMF_MAX_IFS; i++) |
| if (drvr->iflist[i]) { |
| ndev = drvr->iflist[i]->ndev; |
| if (state) |
| netif_stop_queue(ndev); |
| else |
| netif_wake_queue(ndev); |
| } |
| } |
| |
| void brcmf_rx_frames(struct device *dev, struct sk_buff_head *skb_list) |
| { |
| unsigned char *eth; |
| uint len; |
| struct sk_buff *skb, *pnext; |
| struct brcmf_if *ifp; |
| struct brcmf_bus *bus_if = dev_get_drvdata(dev); |
| struct brcmf_pub *drvr = bus_if->drvr; |
| u8 ifidx; |
| int ret; |
| |
| brcmf_dbg(TRACE, "Enter\n"); |
| |
| skb_queue_walk_safe(skb_list, skb, pnext) { |
| skb_unlink(skb, skb_list); |
| |
| /* process and remove protocol-specific header */ |
| ret = brcmf_proto_hdrpull(drvr, drvr->fw_signals, &ifidx, skb); |
| ifp = drvr->iflist[ifidx]; |
| |
| if (ret || !ifp || !ifp->ndev) { |
| if ((ret != -ENODATA) && ifp) |
| ifp->stats.rx_errors++; |
| brcmu_pkt_buf_free_skb(skb); |
| continue; |
| } |
| |
| /* Get the protocol, maintain skb around eth_type_trans() |
| * The main reason for this hack is for the limitation of |
| * Linux 2.4 where 'eth_type_trans' uses the |
| * 'net->hard_header_len' |
| * to perform skb_pull inside vs ETH_HLEN. Since to avoid |
| * coping of the packet coming from the network stack to add |
| * BDC, Hardware header etc, during network interface |
| * registration |
| * we set the 'net->hard_header_len' to ETH_HLEN + extra space |
| * required |
| * for BDC, Hardware header etc. and not just the ETH_HLEN |
| */ |
| eth = skb->data; |
| len = skb->len; |
| |
| skb->dev = ifp->ndev; |
| skb->protocol = eth_type_trans(skb, skb->dev); |
| |
| if (skb->pkt_type == PACKET_MULTICAST) |
| ifp->stats.multicast++; |
| |
| skb->data = eth; |
| skb->len = len; |
| |
| /* Strip header, count, deliver upward */ |
| skb_pull(skb, ETH_HLEN); |
| |
| /* Process special event packets and then discard them */ |
| brcmf_fweh_process_skb(drvr, skb, &ifidx); |
| |
| if (drvr->iflist[ifidx]) { |
| ifp = drvr->iflist[ifidx]; |
| ifp->ndev->last_rx = jiffies; |
| } |
| |
| if (!(ifp->ndev->flags & IFF_UP)) { |
| brcmu_pkt_buf_free_skb(skb); |
| continue; |
| } |
| |
| ifp->stats.rx_bytes += skb->len; |
| ifp->stats.rx_packets++; |
| |
| if (in_interrupt()) |
| netif_rx(skb); |
| else |
| /* If the receive is not processed inside an ISR, |
| * the softirqd must be woken explicitly to service |
| * the NET_RX_SOFTIRQ. In 2.6 kernels, this is handled |
| * by netif_rx_ni(), but in earlier kernels, we need |
| * to do it manually. |
| */ |
| netif_rx_ni(skb); |
| } |
| } |
| |
| void brcmf_txcomplete(struct device *dev, struct sk_buff *txp, bool success) |
| { |
| u8 ifidx; |
| struct ethhdr *eh; |
| u16 type; |
| struct brcmf_bus *bus_if = dev_get_drvdata(dev); |
| struct brcmf_pub *drvr = bus_if->drvr; |
| struct brcmf_if *ifp; |
| int res; |
| |
| res = brcmf_proto_hdrpull(drvr, false, &ifidx, txp); |
| |
| ifp = drvr->iflist[ifidx]; |
| if (!ifp) |
| goto done; |
| |
| if (res == 0) { |
| eh = (struct ethhdr *)(txp->data); |
| type = ntohs(eh->h_proto); |
| |
| if (type == ETH_P_PAE) { |
| atomic_dec(&ifp->pend_8021x_cnt); |
| if (waitqueue_active(&ifp->pend_8021x_wait)) |
| wake_up(&ifp->pend_8021x_wait); |
| } |
| } |
| if (!success) |
| ifp->stats.tx_errors++; |
| |
| done: |
| brcmu_pkt_buf_free_skb(txp); |
| } |
| |
| static struct net_device_stats *brcmf_netdev_get_stats(struct net_device *ndev) |
| { |
| struct brcmf_if *ifp = netdev_priv(ndev); |
| |
| brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx); |
| |
| return &ifp->stats; |
| } |
| |
| /* |
| * Set current toe component enables in toe_ol iovar, |
| * and set toe global enable iovar |
| */ |
| static int brcmf_toe_set(struct brcmf_if *ifp, u32 toe_ol) |
| { |
| s32 err; |
| |
| err = brcmf_fil_iovar_int_set(ifp, "toe_ol", toe_ol); |
| if (err < 0) { |
| brcmf_err("Setting toe_ol failed, %d\n", err); |
| return err; |
| } |
| |
| err = brcmf_fil_iovar_int_set(ifp, "toe", (toe_ol != 0)); |
| if (err < 0) |
| brcmf_err("Setting toe failed, %d\n", err); |
| |
| return err; |
| |
| } |
| |
| static void brcmf_ethtool_get_drvinfo(struct net_device *ndev, |
| struct ethtool_drvinfo *info) |
| { |
| struct brcmf_if *ifp = netdev_priv(ndev); |
| struct brcmf_pub *drvr = ifp->drvr; |
| |
| strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver)); |
| snprintf(info->version, sizeof(info->version), "%lu", |
| drvr->drv_version); |
| strlcpy(info->bus_info, dev_name(drvr->bus_if->dev), |
| sizeof(info->bus_info)); |
| } |
| |
| static const struct ethtool_ops brcmf_ethtool_ops = { |
| .get_drvinfo = brcmf_ethtool_get_drvinfo, |
| }; |
| |
| static int brcmf_ethtool(struct brcmf_if *ifp, void __user *uaddr) |
| { |
| struct brcmf_pub *drvr = ifp->drvr; |
| struct ethtool_drvinfo info; |
| char drvname[sizeof(info.driver)]; |
| u32 cmd; |
| struct ethtool_value edata; |
| u32 toe_cmpnt, csum_dir; |
| int ret; |
| |
| brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx); |
| |
| /* all ethtool calls start with a cmd word */ |
| if (copy_from_user(&cmd, uaddr, sizeof(u32))) |
| return -EFAULT; |
| |
| switch (cmd) { |
| case ETHTOOL_GDRVINFO: |
| /* Copy out any request driver name */ |
| if (copy_from_user(&info, uaddr, sizeof(info))) |
| return -EFAULT; |
| strncpy(drvname, info.driver, sizeof(info.driver)); |
| drvname[sizeof(info.driver) - 1] = '\0'; |
| |
| /* clear struct for return */ |
| memset(&info, 0, sizeof(info)); |
| info.cmd = cmd; |
| |
| /* if requested, identify ourselves */ |
| if (strcmp(drvname, "?dhd") == 0) { |
| sprintf(info.driver, "dhd"); |
| strcpy(info.version, BRCMF_VERSION_STR); |
| } |
| /* report dongle driver type */ |
| else |
| sprintf(info.driver, "wl"); |
| |
| sprintf(info.version, "%lu", drvr->drv_version); |
| if (copy_to_user(uaddr, &info, sizeof(info))) |
| return -EFAULT; |
| brcmf_dbg(TRACE, "given %*s, returning %s\n", |
| (int)sizeof(drvname), drvname, info.driver); |
| break; |
| |
| /* Get toe offload components from dongle */ |
| case ETHTOOL_GRXCSUM: |
| case ETHTOOL_GTXCSUM: |
| ret = brcmf_fil_iovar_int_get(ifp, "toe_ol", &toe_cmpnt); |
| if (ret < 0) |
| return ret; |
| |
| csum_dir = |
| (cmd == ETHTOOL_GTXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL; |
| |
| edata.cmd = cmd; |
| edata.data = (toe_cmpnt & csum_dir) ? 1 : 0; |
| |
| if (copy_to_user(uaddr, &edata, sizeof(edata))) |
| return -EFAULT; |
| break; |
| |
| /* Set toe offload components in dongle */ |
| case ETHTOOL_SRXCSUM: |
| case ETHTOOL_STXCSUM: |
| if (copy_from_user(&edata, uaddr, sizeof(edata))) |
| return -EFAULT; |
| |
| /* Read the current settings, update and write back */ |
| ret = brcmf_fil_iovar_int_get(ifp, "toe_ol", &toe_cmpnt); |
| if (ret < 0) |
| return ret; |
| |
| csum_dir = |
| (cmd == ETHTOOL_STXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL; |
| |
| if (edata.data != 0) |
| toe_cmpnt |= csum_dir; |
| else |
| toe_cmpnt &= ~csum_dir; |
| |
| ret = brcmf_toe_set(ifp, toe_cmpnt); |
| if (ret < 0) |
| return ret; |
| |
| /* If setting TX checksum mode, tell Linux the new mode */ |
| if (cmd == ETHTOOL_STXCSUM) { |
| if (edata.data) |
| ifp->ndev->features |= NETIF_F_IP_CSUM; |
| else |
| ifp->ndev->features &= ~NETIF_F_IP_CSUM; |
| } |
| |
| break; |
| |
| default: |
| return -EOPNOTSUPP; |
| } |
| |
| return 0; |
| } |
| |
| static int brcmf_netdev_ioctl_entry(struct net_device *ndev, struct ifreq *ifr, |
| int cmd) |
| { |
| struct brcmf_if *ifp = netdev_priv(ndev); |
| struct brcmf_pub *drvr = ifp->drvr; |
| |
| brcmf_dbg(TRACE, "Enter, idx=%d, cmd=0x%04x\n", ifp->bssidx, cmd); |
| |
| if (!drvr->iflist[ifp->bssidx]) |
| return -1; |
| |
| if (cmd == SIOCETHTOOL) |
| return brcmf_ethtool(ifp, ifr->ifr_data); |
| |
| return -EOPNOTSUPP; |
| } |
| |
| static int brcmf_netdev_stop(struct net_device *ndev) |
| { |
| struct brcmf_if *ifp = netdev_priv(ndev); |
| |
| brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx); |
| |
| brcmf_cfg80211_down(ndev); |
| |
| /* Set state and stop OS transmissions */ |
| netif_stop_queue(ndev); |
| |
| return 0; |
| } |
| |
| static int brcmf_netdev_open(struct net_device *ndev) |
| { |
| struct brcmf_if *ifp = netdev_priv(ndev); |
| struct brcmf_pub *drvr = ifp->drvr; |
| struct brcmf_bus *bus_if = drvr->bus_if; |
| u32 toe_ol; |
| s32 ret = 0; |
| |
| brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx); |
| |
| /* If bus is not ready, can't continue */ |
| if (bus_if->state != BRCMF_BUS_DATA) { |
| brcmf_err("failed bus is not ready\n"); |
| return -EAGAIN; |
| } |
| |
| atomic_set(&ifp->pend_8021x_cnt, 0); |
| |
| /* Get current TOE mode from dongle */ |
| if (brcmf_fil_iovar_int_get(ifp, "toe_ol", &toe_ol) >= 0 |
| && (toe_ol & TOE_TX_CSUM_OL) != 0) |
| ndev->features |= NETIF_F_IP_CSUM; |
| else |
| ndev->features &= ~NETIF_F_IP_CSUM; |
| |
| /* Allow transmit calls */ |
| netif_start_queue(ndev); |
| if (brcmf_cfg80211_up(ndev)) { |
| brcmf_err("failed to bring up cfg80211\n"); |
| return -1; |
| } |
| |
| return ret; |
| } |
| |
| static const struct net_device_ops brcmf_netdev_ops_pri = { |
| .ndo_open = brcmf_netdev_open, |
| .ndo_stop = brcmf_netdev_stop, |
| .ndo_get_stats = brcmf_netdev_get_stats, |
| .ndo_do_ioctl = brcmf_netdev_ioctl_entry, |
| .ndo_start_xmit = brcmf_netdev_start_xmit, |
| .ndo_set_mac_address = brcmf_netdev_set_mac_address, |
| .ndo_set_rx_mode = brcmf_netdev_set_multicast_list |
| }; |
| |
| int brcmf_net_attach(struct brcmf_if *ifp, bool rtnl_locked) |
| { |
| struct brcmf_pub *drvr = ifp->drvr; |
| struct net_device *ndev; |
| s32 err; |
| |
| brcmf_dbg(TRACE, "Enter, idx=%d mac=%pM\n", ifp->bssidx, |
| ifp->mac_addr); |
| ndev = ifp->ndev; |
| |
| /* set appropriate operations */ |
| ndev->netdev_ops = &brcmf_netdev_ops_pri; |
| |
| ndev->hard_header_len = ETH_HLEN + drvr->hdrlen; |
| ndev->ethtool_ops = &brcmf_ethtool_ops; |
| |
| drvr->rxsz = ndev->mtu + ndev->hard_header_len + |
| drvr->hdrlen; |
| |
| /* set the mac address */ |
| memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN); |
| |
| INIT_WORK(&ifp->setmacaddr_work, _brcmf_set_mac_address); |
| INIT_WORK(&ifp->multicast_work, _brcmf_set_multicast_list); |
| |
| if (rtnl_locked) |
| err = register_netdevice(ndev); |
| else |
| err = register_netdev(ndev); |
| if (err != 0) { |
| brcmf_err("couldn't register the net device\n"); |
| goto fail; |
| } |
| |
| brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name); |
| |
| return 0; |
| |
| fail: |
| ndev->netdev_ops = NULL; |
| return -EBADE; |
| } |
| |
| static int brcmf_net_p2p_open(struct net_device *ndev) |
| { |
| brcmf_dbg(TRACE, "Enter\n"); |
| |
| return brcmf_cfg80211_up(ndev); |
| } |
| |
| static int brcmf_net_p2p_stop(struct net_device *ndev) |
| { |
| brcmf_dbg(TRACE, "Enter\n"); |
| |
| return brcmf_cfg80211_down(ndev); |
| } |
| |
| static int brcmf_net_p2p_do_ioctl(struct net_device *ndev, |
| struct ifreq *ifr, int cmd) |
| { |
| brcmf_dbg(TRACE, "Enter\n"); |
| return 0; |
| } |
| |
| static netdev_tx_t brcmf_net_p2p_start_xmit(struct sk_buff *skb, |
| struct net_device *ndev) |
| { |
| if (skb) |
| dev_kfree_skb_any(skb); |
| |
| return NETDEV_TX_OK; |
| } |
| |
| static const struct net_device_ops brcmf_netdev_ops_p2p = { |
| .ndo_open = brcmf_net_p2p_open, |
| .ndo_stop = brcmf_net_p2p_stop, |
| .ndo_do_ioctl = brcmf_net_p2p_do_ioctl, |
| .ndo_start_xmit = brcmf_net_p2p_start_xmit |
| }; |
| |
| static int brcmf_net_p2p_attach(struct brcmf_if *ifp) |
| { |
| struct net_device *ndev; |
| |
| brcmf_dbg(TRACE, "Enter, idx=%d mac=%pM\n", ifp->bssidx, |
| ifp->mac_addr); |
| ndev = ifp->ndev; |
| |
| ndev->netdev_ops = &brcmf_netdev_ops_p2p; |
| |
| /* set the mac address */ |
| memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN); |
| |
| if (register_netdev(ndev) != 0) { |
| brcmf_err("couldn't register the p2p net device\n"); |
| goto fail; |
| } |
| |
| brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name); |
| |
| return 0; |
| |
| fail: |
| return -EBADE; |
| } |
| |
| struct brcmf_if *brcmf_add_if(struct brcmf_pub *drvr, s32 bssidx, s32 ifidx, |
| char *name, u8 *mac_addr) |
| { |
| struct brcmf_if *ifp; |
| struct net_device *ndev; |
| |
| brcmf_dbg(TRACE, "Enter, idx=%d, ifidx=%d\n", bssidx, ifidx); |
| |
| ifp = drvr->iflist[bssidx]; |
| /* |
| * Delete the existing interface before overwriting it |
| * in case we missed the BRCMF_E_IF_DEL event. |
| */ |
| if (ifp) { |
| brcmf_err("ERROR: netdev:%s already exists\n", |
| ifp->ndev->name); |
| if (ifidx) { |
| netif_stop_queue(ifp->ndev); |
| unregister_netdev(ifp->ndev); |
| free_netdev(ifp->ndev); |
| drvr->iflist[bssidx] = NULL; |
| } else { |
| brcmf_err("ignore IF event\n"); |
| return ERR_PTR(-EINVAL); |
| } |
| } |
| |
| /* Allocate netdev, including space for private structure */ |
| ndev = alloc_netdev(sizeof(struct brcmf_if), name, ether_setup); |
| if (!ndev) { |
| brcmf_err("OOM - alloc_netdev\n"); |
| return ERR_PTR(-ENOMEM); |
| } |
| |
| ifp = netdev_priv(ndev); |
| ifp->ndev = ndev; |
| ifp->drvr = drvr; |
| drvr->iflist[bssidx] = ifp; |
| ifp->ifidx = ifidx; |
| ifp->bssidx = bssidx; |
| |
| |
| init_waitqueue_head(&ifp->pend_8021x_wait); |
| |
| if (mac_addr != NULL) |
| memcpy(ifp->mac_addr, mac_addr, ETH_ALEN); |
| |
| brcmf_dbg(TRACE, " ==== pid:%x, if:%s (%pM) created ===\n", |
| current->pid, ifp->ndev->name, ifp->mac_addr); |
| |
| return ifp; |
| } |
| |
| void brcmf_del_if(struct brcmf_pub *drvr, s32 bssidx) |
| { |
| struct brcmf_if *ifp; |
| |
| ifp = drvr->iflist[bssidx]; |
| if (!ifp) { |
| brcmf_err("Null interface, idx=%d\n", bssidx); |
| return; |
| } |
| brcmf_dbg(TRACE, "Enter, idx=%d, ifidx=%d\n", bssidx, ifp->ifidx); |
| if (ifp->ndev) { |
| if (bssidx == 0) { |
| if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) { |
| rtnl_lock(); |
| brcmf_netdev_stop(ifp->ndev); |
| rtnl_unlock(); |
| } |
| } else { |
| netif_stop_queue(ifp->ndev); |
| } |
| |
| if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) { |
| cancel_work_sync(&ifp->setmacaddr_work); |
| cancel_work_sync(&ifp->multicast_work); |
| } |
| |
| unregister_netdev(ifp->ndev); |
| drvr->iflist[bssidx] = NULL; |
| if (bssidx == 0) |
| brcmf_cfg80211_detach(drvr->config); |
| free_netdev(ifp->ndev); |
| } |
| } |
| |
| int brcmf_attach(uint bus_hdrlen, struct device *dev) |
| { |
| struct brcmf_pub *drvr = NULL; |
| int ret = 0; |
| |
| brcmf_dbg(TRACE, "Enter\n"); |
| |
| /* Allocate primary brcmf_info */ |
| drvr = kzalloc(sizeof(struct brcmf_pub), GFP_ATOMIC); |
| if (!drvr) |
| return -ENOMEM; |
| |
| mutex_init(&drvr->proto_block); |
| |
| /* Link to bus module */ |
| drvr->hdrlen = bus_hdrlen; |
| drvr->bus_if = dev_get_drvdata(dev); |
| drvr->bus_if->drvr = drvr; |
| |
| /* create device debugfs folder */ |
| brcmf_debugfs_attach(drvr); |
| |
| /* Attach and link in the protocol */ |
| ret = brcmf_proto_attach(drvr); |
| if (ret != 0) { |
| brcmf_err("brcmf_prot_attach failed\n"); |
| goto fail; |
| } |
| |
| /* attach firmware event handler */ |
| brcmf_fweh_attach(drvr); |
| |
| INIT_LIST_HEAD(&drvr->bus_if->dcmd_list); |
| |
| return ret; |
| |
| fail: |
| brcmf_detach(dev); |
| |
| return ret; |
| } |
| |
| int brcmf_bus_start(struct device *dev) |
| { |
| int ret = -1; |
| struct brcmf_bus *bus_if = dev_get_drvdata(dev); |
| struct brcmf_pub *drvr = bus_if->drvr; |
| struct brcmf_if *ifp; |
| struct brcmf_if *p2p_ifp; |
| |
| brcmf_dbg(TRACE, "\n"); |
| |
| /* Bring up the bus */ |
| ret = brcmf_bus_init(bus_if); |
| if (ret != 0) { |
| brcmf_err("brcmf_sdbrcm_bus_init failed %d\n", ret); |
| return ret; |
| } |
| |
| /* add primary networking interface */ |
| ifp = brcmf_add_if(drvr, 0, 0, "wlan%d", NULL); |
| if (IS_ERR(ifp)) |
| return PTR_ERR(ifp); |
| |
| if (brcmf_p2p_enable) |
| p2p_ifp = brcmf_add_if(drvr, 1, 0, "p2p%d", NULL); |
| else |
| p2p_ifp = NULL; |
| if (IS_ERR(p2p_ifp)) |
| p2p_ifp = NULL; |
| |
| /* signal bus ready */ |
| bus_if->state = BRCMF_BUS_DATA; |
| |
| /* Bus is ready, do any initialization */ |
| ret = brcmf_c_preinit_dcmds(ifp); |
| if (ret < 0) |
| goto fail; |
| |
| drvr->fw_signals = true; |
| (void)brcmf_fws_init(drvr); |
| |
| drvr->config = brcmf_cfg80211_attach(drvr, bus_if->dev); |
| if (drvr->config == NULL) { |
| ret = -ENOMEM; |
| goto fail; |
| } |
| |
| ret = brcmf_fweh_activate_events(ifp); |
| if (ret < 0) |
| goto fail; |
| |
| ret = brcmf_net_attach(ifp, false); |
| fail: |
| if (ret < 0) { |
| brcmf_err("failed: %d\n", ret); |
| if (drvr->config) |
| brcmf_cfg80211_detach(drvr->config); |
| if (drvr->fws) |
| brcmf_fws_deinit(drvr); |
| free_netdev(ifp->ndev); |
| drvr->iflist[0] = NULL; |
| if (p2p_ifp) { |
| free_netdev(p2p_ifp->ndev); |
| drvr->iflist[1] = NULL; |
| } |
| return ret; |
| } |
| if ((brcmf_p2p_enable) && (p2p_ifp)) |
| brcmf_net_p2p_attach(p2p_ifp); |
| |
| return 0; |
| } |
| |
| static void brcmf_bus_detach(struct brcmf_pub *drvr) |
| { |
| brcmf_dbg(TRACE, "Enter\n"); |
| |
| if (drvr) { |
| /* Stop the protocol module */ |
| brcmf_proto_stop(drvr); |
| |
| /* Stop the bus module */ |
| brcmf_bus_stop(drvr->bus_if); |
| } |
| } |
| |
| void brcmf_dev_reset(struct device *dev) |
| { |
| struct brcmf_bus *bus_if = dev_get_drvdata(dev); |
| struct brcmf_pub *drvr = bus_if->drvr; |
| |
| if (drvr == NULL) |
| return; |
| |
| if (drvr->iflist[0]) |
| brcmf_fil_cmd_int_set(drvr->iflist[0], BRCMF_C_TERMINATED, 1); |
| } |
| |
| void brcmf_detach(struct device *dev) |
| { |
| s32 i; |
| struct brcmf_bus *bus_if = dev_get_drvdata(dev); |
| struct brcmf_pub *drvr = bus_if->drvr; |
| |
| brcmf_dbg(TRACE, "Enter\n"); |
| |
| if (drvr == NULL) |
| return; |
| |
| /* stop firmware event handling */ |
| brcmf_fweh_detach(drvr); |
| |
| /* make sure primary interface removed last */ |
| for (i = BRCMF_MAX_IFS-1; i > -1; i--) |
| if (drvr->iflist[i]) |
| brcmf_del_if(drvr, i); |
| |
| brcmf_bus_detach(drvr); |
| |
| if (drvr->prot) |
| brcmf_proto_detach(drvr); |
| |
| if (drvr->fws) |
| brcmf_fws_deinit(drvr); |
| |
| brcmf_debugfs_detach(drvr); |
| bus_if->drvr = NULL; |
| kfree(drvr); |
| } |
| |
| static int brcmf_get_pend_8021x_cnt(struct brcmf_if *ifp) |
| { |
| return atomic_read(&ifp->pend_8021x_cnt); |
| } |
| |
| int brcmf_netdev_wait_pend8021x(struct net_device *ndev) |
| { |
| struct brcmf_if *ifp = netdev_priv(ndev); |
| int err; |
| |
| err = wait_event_timeout(ifp->pend_8021x_wait, |
| !brcmf_get_pend_8021x_cnt(ifp), |
| msecs_to_jiffies(MAX_WAIT_FOR_8021X_TX)); |
| |
| WARN_ON(!err); |
| |
| return !err; |
| } |
| |
| /* |
| * return chip id and rev of the device encoded in u32. |
| */ |
| u32 brcmf_get_chip_info(struct brcmf_if *ifp) |
| { |
| struct brcmf_bus *bus = ifp->drvr->bus_if; |
| |
| return bus->chip << 4 | bus->chiprev; |
| } |
| |
| static void brcmf_driver_init(struct work_struct *work) |
| { |
| brcmf_debugfs_init(); |
| |
| #ifdef CONFIG_BRCMFMAC_SDIO |
| brcmf_sdio_init(); |
| #endif |
| #ifdef CONFIG_BRCMFMAC_USB |
| brcmf_usb_init(); |
| #endif |
| } |
| static DECLARE_WORK(brcmf_driver_work, brcmf_driver_init); |
| |
| static int __init brcmfmac_module_init(void) |
| { |
| if (!schedule_work(&brcmf_driver_work)) |
| return -EBUSY; |
| |
| return 0; |
| } |
| |
| static void __exit brcmfmac_module_exit(void) |
| { |
| cancel_work_sync(&brcmf_driver_work); |
| |
| #ifdef CONFIG_BRCMFMAC_SDIO |
| brcmf_sdio_exit(); |
| #endif |
| #ifdef CONFIG_BRCMFMAC_USB |
| brcmf_usb_exit(); |
| #endif |
| brcmf_debugfs_exit(); |
| } |
| |
| module_init(brcmfmac_module_init); |
| module_exit(brcmfmac_module_exit); |