/* * 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. */ #undef pr_fmt #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "dhd.h" #include "dhd_bus.h" #include "dhd_proto.h" #include "dhd_dbg.h" #include "wl_cfg80211.h" MODULE_AUTHOR("Broadcom Corporation"); MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN fullmac driver."); MODULE_SUPPORTED_DEVICE("Broadcom 802.11n WLAN fullmac cards"); MODULE_LICENSE("Dual BSD/GPL"); /* Interface control information */ struct brcmf_if { struct brcmf_pub *drvr; /* back pointer to brcmf_pub */ /* OS/stack specifics */ struct net_device *ndev; struct net_device_stats stats; int idx; /* iface idx in dongle */ u8 mac_addr[ETH_ALEN]; /* assigned MAC address */ }; /* Error bits */ int brcmf_msg_level = BRCMF_ERROR_VAL; module_param(brcmf_msg_level, int, 0); int brcmf_ifname2idx(struct brcmf_pub *drvr, char *name) { int i = BRCMF_MAX_IFS; struct brcmf_if *ifp; if (name == NULL || *name == '\0') return 0; while (--i > 0) { ifp = drvr->iflist[i]; if (ifp && !strncmp(ifp->ndev->name, name, IFNAMSIZ)) break; } brcmf_dbg(TRACE, "return idx %d for \"%s\"\n", i, name); return i; /* default - the primary interface */ } char *brcmf_ifname(struct brcmf_pub *drvr, int ifidx) { if (ifidx < 0 || ifidx >= BRCMF_MAX_IFS) { brcmf_dbg(ERROR, "ifidx %d out of range\n", ifidx); return ""; } if (drvr->iflist[ifidx] == NULL) { brcmf_dbg(ERROR, "null i/f %d\n", ifidx); return ""; } if (drvr->iflist[ifidx]->ndev) return drvr->iflist[ifidx]->ndev->name; return ""; } static void _brcmf_set_multicast_list(struct work_struct *work) { struct net_device *ndev; struct netdev_hw_addr *ha; u32 dcmd_value, cnt; __le32 cnt_le; __le32 dcmd_le_value; struct brcmf_dcmd dcmd; char *buf, *bufp; uint buflen; int ret; struct brcmf_pub *drvr = container_of(work, struct brcmf_pub, multicast_work); ndev = drvr->iflist[0]->ndev; cnt = netdev_mc_count(ndev); /* Determine initial value of allmulti flag */ dcmd_value = (ndev->flags & IFF_ALLMULTI) ? true : false; /* Send down the multicast list first. */ buflen = sizeof("mcast_list") + sizeof(cnt) + (cnt * ETH_ALEN); bufp = buf = kmalloc(buflen, GFP_ATOMIC); if (!bufp) return; strcpy(bufp, "mcast_list"); bufp += strlen("mcast_list") + 1; cnt_le = cpu_to_le32(cnt); memcpy(bufp, &cnt_le, sizeof(cnt)); bufp += sizeof(cnt_le); netdev_for_each_mc_addr(ha, ndev) { if (!cnt) break; memcpy(bufp, ha->addr, ETH_ALEN); bufp += ETH_ALEN; cnt--; } memset(&dcmd, 0, sizeof(dcmd)); dcmd.cmd = BRCMF_C_SET_VAR; dcmd.buf = buf; dcmd.len = buflen; dcmd.set = true; ret = brcmf_proto_dcmd(drvr, 0, &dcmd, dcmd.len); if (ret < 0) { brcmf_dbg(ERROR, "%s: set mcast_list failed, cnt %d\n", brcmf_ifname(drvr, 0), cnt); dcmd_value = cnt ? true : dcmd_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... */ buflen = sizeof("allmulti") + sizeof(dcmd_value); buf = kmalloc(buflen, GFP_ATOMIC); if (!buf) return; dcmd_le_value = cpu_to_le32(dcmd_value); if (!brcmf_c_mkiovar ("allmulti", (void *)&dcmd_le_value, sizeof(dcmd_le_value), buf, buflen)) { brcmf_dbg(ERROR, "%s: mkiovar failed for allmulti, datalen %d buflen %u\n", brcmf_ifname(drvr, 0), (int)sizeof(dcmd_value), buflen); kfree(buf); return; } memset(&dcmd, 0, sizeof(dcmd)); dcmd.cmd = BRCMF_C_SET_VAR; dcmd.buf = buf; dcmd.len = buflen; dcmd.set = true; ret = brcmf_proto_dcmd(drvr, 0, &dcmd, dcmd.len); if (ret < 0) { brcmf_dbg(ERROR, "%s: set allmulti %d failed\n", brcmf_ifname(drvr, 0), le32_to_cpu(dcmd_le_value)); } kfree(buf); /* Finally, pick up the PROMISC flag as well, like the NIC driver does */ dcmd_value = (ndev->flags & IFF_PROMISC) ? true : false; dcmd_le_value = cpu_to_le32(dcmd_value); memset(&dcmd, 0, sizeof(dcmd)); dcmd.cmd = BRCMF_C_SET_PROMISC; dcmd.buf = &dcmd_le_value; dcmd.len = sizeof(dcmd_le_value); dcmd.set = true; ret = brcmf_proto_dcmd(drvr, 0, &dcmd, dcmd.len); if (ret < 0) { brcmf_dbg(ERROR, "%s: set promisc %d failed\n", brcmf_ifname(drvr, 0), le32_to_cpu(dcmd_le_value)); } } static void _brcmf_set_mac_address(struct work_struct *work) { char buf[32]; struct brcmf_dcmd dcmd; int ret; struct brcmf_pub *drvr = container_of(work, struct brcmf_pub, setmacaddr_work); brcmf_dbg(TRACE, "enter\n"); if (!brcmf_c_mkiovar("cur_etheraddr", (char *)drvr->macvalue, ETH_ALEN, buf, 32)) { brcmf_dbg(ERROR, "%s: mkiovar failed for cur_etheraddr\n", brcmf_ifname(drvr, 0)); return; } memset(&dcmd, 0, sizeof(dcmd)); dcmd.cmd = BRCMF_C_SET_VAR; dcmd.buf = buf; dcmd.len = 32; dcmd.set = true; ret = brcmf_proto_dcmd(drvr, 0, &dcmd, dcmd.len); if (ret < 0) brcmf_dbg(ERROR, "%s: set cur_etheraddr failed\n", brcmf_ifname(drvr, 0)); else memcpy(drvr->iflist[0]->ndev->dev_addr, drvr->macvalue, ETH_ALEN); return; } static int brcmf_netdev_set_mac_address(struct net_device *ndev, void *addr) { struct brcmf_if *ifp = netdev_priv(ndev); struct brcmf_pub *drvr = ifp->drvr; struct sockaddr *sa = (struct sockaddr *)addr; memcpy(&drvr->macvalue, sa->sa_data, ETH_ALEN); schedule_work(&drvr->setmacaddr_work); return 0; } static void brcmf_netdev_set_multicast_list(struct net_device *ndev) { struct brcmf_if *ifp = netdev_priv(ndev); struct brcmf_pub *drvr = ifp->drvr; schedule_work(&drvr->multicast_work); } int brcmf_sendpkt(struct brcmf_pub *drvr, int ifidx, struct sk_buff *pktbuf) { /* Reject if down */ if (!drvr->bus_if->drvr_up || (drvr->bus_if->state == BRCMF_BUS_DOWN)) return -ENODEV; /* Update multicast statistic */ if (pktbuf->len >= ETH_ALEN) { u8 *pktdata = (u8 *) (pktbuf->data); struct ethhdr *eh = (struct ethhdr *)pktdata; if (is_multicast_ether_addr(eh->h_dest)) drvr->tx_multicast++; if (ntohs(eh->h_proto) == ETH_P_PAE) atomic_inc(&drvr->pend_8021x_cnt); } /* If the protocol uses a data header, apply it */ brcmf_proto_hdrpush(drvr, ifidx, pktbuf); /* Use bus module to send data frame */ return drvr->bus_if->brcmf_bus_txdata(drvr->dev, pktbuf); } static int 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; brcmf_dbg(TRACE, "Enter\n"); /* Reject if down */ if (!drvr->bus_if->drvr_up || (drvr->bus_if->state == BRCMF_BUS_DOWN)) { brcmf_dbg(ERROR, "xmit rejected drvup=%d state=%d\n", drvr->bus_if->drvr_up, drvr->bus_if->state); netif_stop_queue(ndev); return -ENODEV; } if (!drvr->iflist[ifp->idx]) { brcmf_dbg(ERROR, "bad ifidx %d\n", ifp->idx); netif_stop_queue(ndev); return -ENODEV; } /* 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->idx)); drvr->bus_if->tx_realloc++; skb2 = skb_realloc_headroom(skb, drvr->hdrlen); dev_kfree_skb(skb); skb = skb2; if (skb == NULL) { brcmf_dbg(ERROR, "%s: skb_realloc_headroom failed\n", brcmf_ifname(drvr, ifp->idx)); ret = -ENOMEM; goto done; } } ret = brcmf_sendpkt(drvr, ifp->idx, skb); done: if (ret) drvr->bus_if->dstats.tx_dropped++; else drvr->bus_if->dstats.tx_packets++; /* Return ok: we always eat the packet */ return 0; } void brcmf_txflowcontrol(struct device *dev, int ifidx, bool state) { struct net_device *ndev; struct brcmf_bus *bus_if = dev_get_drvdata(dev); struct brcmf_pub *drvr = bus_if->drvr; brcmf_dbg(TRACE, "Enter\n"); ndev = drvr->iflist[ifidx]->ndev; if (state == ON) netif_stop_queue(ndev); else netif_wake_queue(ndev); } static int brcmf_host_event(struct brcmf_pub *drvr, int *ifidx, void *pktdata, struct brcmf_event_msg *event, void **data) { int bcmerror = 0; bcmerror = brcmf_c_host_event(drvr, ifidx, pktdata, event, data); if (bcmerror != 0) return bcmerror; if (drvr->iflist[*ifidx]->ndev) brcmf_cfg80211_event(drvr->iflist[*ifidx]->ndev, event, *data); return bcmerror; } void brcmf_rx_frame(struct device *dev, int ifidx, struct sk_buff_head *skb_list) { unsigned char *eth; uint len; void *data; struct sk_buff *skb, *pnext; struct brcmf_if *ifp; struct brcmf_event_msg event; struct brcmf_bus *bus_if = dev_get_drvdata(dev); struct brcmf_pub *drvr = bus_if->drvr; brcmf_dbg(TRACE, "Enter\n"); skb_queue_walk_safe(skb_list, skb, pnext) { skb_unlink(skb, skb_list); /* 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; ifp = drvr->iflist[ifidx]; if (ifp == NULL) ifp = drvr->iflist[0]; if (!ifp || !ifp->ndev || ifp->ndev->reg_state != NETREG_REGISTERED) { brcmu_pkt_buf_free_skb(skb); continue; } skb->dev = ifp->ndev; skb->protocol = eth_type_trans(skb, skb->dev); if (skb->pkt_type == PACKET_MULTICAST) bus_if->dstats.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 */ if (ntohs(skb->protocol) == ETH_P_LINK_CTL) brcmf_host_event(drvr, &ifidx, skb_mac_header(skb), &event, &data); if (drvr->iflist[ifidx]) { ifp = drvr->iflist[ifidx]; ifp->ndev->last_rx = jiffies; } bus_if->dstats.rx_bytes += skb->len; bus_if->dstats.rx_packets++; /* Local count */ 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) { uint ifidx; struct ethhdr *eh; u16 type; struct brcmf_bus *bus_if = dev_get_drvdata(dev); struct brcmf_pub *drvr = bus_if->drvr; brcmf_proto_hdrpull(dev, &ifidx, txp); eh = (struct ethhdr *)(txp->data); type = ntohs(eh->h_proto); if (type == ETH_P_PAE) atomic_dec(&drvr->pend_8021x_cnt); } static struct net_device_stats *brcmf_netdev_get_stats(struct net_device *ndev) { struct brcmf_if *ifp = netdev_priv(ndev); struct brcmf_bus *bus_if = ifp->drvr->bus_if; brcmf_dbg(TRACE, "Enter\n"); /* Copy dongle stats to net device stats */ ifp->stats.rx_packets = bus_if->dstats.rx_packets; ifp->stats.tx_packets = bus_if->dstats.tx_packets; ifp->stats.rx_bytes = bus_if->dstats.rx_bytes; ifp->stats.tx_bytes = bus_if->dstats.tx_bytes; ifp->stats.rx_errors = bus_if->dstats.rx_errors; ifp->stats.tx_errors = bus_if->dstats.tx_errors; ifp->stats.rx_dropped = bus_if->dstats.rx_dropped; ifp->stats.tx_dropped = bus_if->dstats.tx_dropped; ifp->stats.multicast = bus_if->dstats.multicast; return &ifp->stats; } /* Retrieve current toe component enables, which are kept as a bitmap in toe_ol iovar */ static int brcmf_toe_get(struct brcmf_pub *drvr, int ifidx, u32 *toe_ol) { struct brcmf_dcmd dcmd; __le32 toe_le; char buf[32]; int ret; memset(&dcmd, 0, sizeof(dcmd)); dcmd.cmd = BRCMF_C_GET_VAR; dcmd.buf = buf; dcmd.len = (uint) sizeof(buf); dcmd.set = false; strcpy(buf, "toe_ol"); ret = brcmf_proto_dcmd(drvr, ifidx, &dcmd, dcmd.len); if (ret < 0) { /* Check for older dongle image that doesn't support toe_ol */ if (ret == -EIO) { brcmf_dbg(ERROR, "%s: toe not supported by device\n", brcmf_ifname(drvr, ifidx)); return -EOPNOTSUPP; } brcmf_dbg(INFO, "%s: could not get toe_ol: ret=%d\n", brcmf_ifname(drvr, ifidx), ret); return ret; } memcpy(&toe_le, buf, sizeof(u32)); *toe_ol = le32_to_cpu(toe_le); return 0; } /* Set current toe component enables in toe_ol iovar, and set toe global enable iovar */ static int brcmf_toe_set(struct brcmf_pub *drvr, int ifidx, u32 toe_ol) { struct brcmf_dcmd dcmd; char buf[32]; int ret; __le32 toe_le = cpu_to_le32(toe_ol); memset(&dcmd, 0, sizeof(dcmd)); dcmd.cmd = BRCMF_C_SET_VAR; dcmd.buf = buf; dcmd.len = (uint) sizeof(buf); dcmd.set = true; /* Set toe_ol as requested */ strcpy(buf, "toe_ol"); memcpy(&buf[sizeof("toe_ol")], &toe_le, sizeof(u32)); ret = brcmf_proto_dcmd(drvr, ifidx, &dcmd, dcmd.len); if (ret < 0) { brcmf_dbg(ERROR, "%s: could not set toe_ol: ret=%d\n", brcmf_ifname(drvr, ifidx), ret); return ret; } /* Enable toe globally only if any components are enabled. */ toe_le = cpu_to_le32(toe_ol != 0); strcpy(buf, "toe"); memcpy(&buf[sizeof("toe")], &toe_le, sizeof(u32)); ret = brcmf_proto_dcmd(drvr, ifidx, &dcmd, dcmd.len); if (ret < 0) { brcmf_dbg(ERROR, "%s: could not set toe: ret=%d\n", brcmf_ifname(drvr, ifidx), ret); return ret; } return 0; } 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; sprintf(info->driver, KBUILD_MODNAME); sprintf(info->version, "%lu", drvr->drv_version); sprintf(info->bus_info, "%s", dev_name(drvr->dev)); } static const struct ethtool_ops brcmf_ethtool_ops = { .get_drvinfo = brcmf_ethtool_get_drvinfo, }; static int brcmf_ethtool(struct brcmf_pub *drvr, void __user *uaddr) { 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\n"); /* 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); } /* otherwise, require dongle to be up */ else if (!drvr->bus_if->drvr_up) { brcmf_dbg(ERROR, "dongle is not up\n"); return -ENODEV; } /* finally, report dongle driver type */ else if (drvr->iswl) sprintf(info.driver, "wl"); else sprintf(info.driver, "xx"); sprintf(info.version, "%lu", drvr->drv_version); if (copy_to_user(uaddr, &info, sizeof(info))) return -EFAULT; brcmf_dbg(CTL, "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_toe_get(drvr, 0, &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_toe_get(drvr, 0, &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(drvr, 0, toe_cmpnt); if (ret < 0) return ret; /* If setting TX checksum mode, tell Linux the new mode */ if (cmd == ETHTOOL_STXCSUM) { if (edata.data) drvr->iflist[0]->ndev->features |= NETIF_F_IP_CSUM; else drvr->iflist[0]->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, "ifidx %d, cmd 0x%04x\n", ifp->idx, cmd); if (!drvr->iflist[ifp->idx]) return -1; if (cmd == SIOCETHTOOL) return brcmf_ethtool(drvr, ifr->ifr_data); return -EOPNOTSUPP; } /* called only from within this driver. Sends a command to the dongle. */ s32 brcmf_exec_dcmd(struct net_device *ndev, u32 cmd, void *arg, u32 len) { struct brcmf_dcmd dcmd; s32 err = 0; int buflen = 0; bool is_set_key_cmd; struct brcmf_if *ifp = netdev_priv(ndev); struct brcmf_pub *drvr = ifp->drvr; memset(&dcmd, 0, sizeof(dcmd)); dcmd.cmd = cmd; dcmd.buf = arg; dcmd.len = len; if (dcmd.buf != NULL) buflen = min_t(uint, dcmd.len, BRCMF_DCMD_MAXLEN); /* send to dongle (must be up, and wl) */ if ((drvr->bus_if->state != BRCMF_BUS_DATA)) { brcmf_dbg(ERROR, "DONGLE_DOWN\n"); err = -EIO; goto done; } if (!drvr->iswl) { err = -EIO; goto done; } /* * Intercept BRCMF_C_SET_KEY CMD - serialize M4 send and * set key CMD to prevent M4 encryption. */ is_set_key_cmd = ((dcmd.cmd == BRCMF_C_SET_KEY) || ((dcmd.cmd == BRCMF_C_SET_VAR) && !(strncmp("wsec_key", dcmd.buf, 9))) || ((dcmd.cmd == BRCMF_C_SET_VAR) && !(strncmp("bsscfg:wsec_key", dcmd.buf, 15)))); if (is_set_key_cmd) brcmf_netdev_wait_pend8021x(ndev); err = brcmf_proto_dcmd(drvr, ifp->idx, &dcmd, buflen); done: if (err > 0) err = 0; return err; } static int brcmf_netdev_stop(struct net_device *ndev) { struct brcmf_if *ifp = netdev_priv(ndev); struct brcmf_pub *drvr = ifp->drvr; brcmf_dbg(TRACE, "Enter\n"); brcmf_cfg80211_down(drvr->config); if (drvr->bus_if->drvr_up == 0) return 0; /* Set state and stop OS transmissions */ drvr->bus_if->drvr_up = false; 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; uint up = 0; brcmf_dbg(TRACE, "ifidx %d\n", ifp->idx); if (ifp->idx == 0) { /* do it only for primary eth0 */ /* If bus is not ready, can't continue */ if (bus_if->state != BRCMF_BUS_DATA) { brcmf_dbg(ERROR, "failed bus is not ready\n"); return -EAGAIN; } atomic_set(&drvr->pend_8021x_cnt, 0); memcpy(ndev->dev_addr, drvr->mac, ETH_ALEN); /* Get current TOE mode from dongle */ if (brcmf_toe_get(drvr, ifp->idx, &toe_ol) >= 0 && (toe_ol & TOE_TX_CSUM_OL) != 0) drvr->iflist[ifp->idx]->ndev->features |= NETIF_F_IP_CSUM; else drvr->iflist[ifp->idx]->ndev->features &= ~NETIF_F_IP_CSUM; } /* make sure RF is ready for work */ brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_UP, (char *)&up, sizeof(up)); /* Allow transmit calls */ netif_start_queue(ndev); drvr->bus_if->drvr_up = true; if (brcmf_cfg80211_up(drvr->config)) { brcmf_dbg(ERROR, "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 }; static int brcmf_net_attach(struct brcmf_if *ifp) { struct brcmf_pub *drvr = ifp->drvr; struct net_device *ndev; u8 temp_addr[ETH_ALEN]; brcmf_dbg(TRACE, "ifidx %d\n", ifp->idx); ndev = drvr->iflist[ifp->idx]->ndev; ndev->netdev_ops = &brcmf_netdev_ops_pri; /* * determine mac address to use */ if (is_valid_ether_addr(ifp->mac_addr)) memcpy(temp_addr, ifp->mac_addr, ETH_ALEN); else memcpy(temp_addr, drvr->mac, ETH_ALEN); if (ifp->idx == 1) { brcmf_dbg(TRACE, "ACCESS POINT MAC:\n"); /* ACCESSPOINT INTERFACE CASE */ temp_addr[0] |= 0X02; /* set bit 2 , - Locally Administered address */ } ndev->hard_header_len = ETH_HLEN + drvr->hdrlen; ndev->ethtool_ops = &brcmf_ethtool_ops; drvr->rxsz = ndev->mtu + ndev->hard_header_len + drvr->hdrlen; memcpy(ndev->dev_addr, temp_addr, ETH_ALEN); /* attach to cfg80211 for primary interface */ if (!ifp->idx) { drvr->config = brcmf_cfg80211_attach(ndev, drvr->dev, drvr); if (drvr->config == NULL) { brcmf_dbg(ERROR, "wl_cfg80211_attach failed\n"); goto fail; } } if (register_netdev(ndev) != 0) { brcmf_dbg(ERROR, "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; } int brcmf_add_if(struct device *dev, int ifidx, char *name, u8 *mac_addr) { struct brcmf_if *ifp; struct net_device *ndev; struct brcmf_bus *bus_if = dev_get_drvdata(dev); struct brcmf_pub *drvr = bus_if->drvr; brcmf_dbg(TRACE, "idx %d\n", ifidx); ifp = drvr->iflist[ifidx]; /* * Delete the existing interface before overwriting it * in case we missed the BRCMF_E_IF_DEL event. */ if (ifp) { brcmf_dbg(ERROR, "ERROR: netdev:%s already exists, try free & unregister\n", ifp->ndev->name); netif_stop_queue(ifp->ndev); unregister_netdev(ifp->ndev); free_netdev(ifp->ndev); drvr->iflist[ifidx] = NULL; } /* Allocate netdev, including space for private structure */ ndev = alloc_netdev(sizeof(struct brcmf_if), name, ether_setup); if (!ndev) { brcmf_dbg(ERROR, "OOM - alloc_netdev\n"); return -ENOMEM; } ifp = netdev_priv(ndev); ifp->ndev = ndev; ifp->drvr = drvr; drvr->iflist[ifidx] = ifp; ifp->idx = ifidx; if (mac_addr != NULL) memcpy(&ifp->mac_addr, mac_addr, ETH_ALEN); if (brcmf_net_attach(ifp)) { brcmf_dbg(ERROR, "brcmf_net_attach failed"); free_netdev(ifp->ndev); drvr->iflist[ifidx] = NULL; return -EOPNOTSUPP; } brcmf_dbg(TRACE, " ==== pid:%x, net_device for if:%s created ===\n", current->pid, ifp->ndev->name); return 0; } void brcmf_del_if(struct brcmf_pub *drvr, int ifidx) { struct brcmf_if *ifp; brcmf_dbg(TRACE, "idx %d\n", ifidx); ifp = drvr->iflist[ifidx]; if (!ifp) { brcmf_dbg(ERROR, "Null interface\n"); return; } if (ifp->ndev) { if (ifidx == 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); } unregister_netdev(ifp->ndev); drvr->iflist[ifidx] = NULL; if (ifidx == 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; drvr->dev = dev; /* create device debugfs folder */ brcmf_debugfs_attach(drvr); /* Attach and link in the protocol */ ret = brcmf_proto_attach(drvr); if (ret != 0) { brcmf_dbg(ERROR, "brcmf_prot_attach failed\n"); goto fail; } INIT_WORK(&drvr->setmacaddr_work, _brcmf_set_mac_address); INIT_WORK(&drvr->multicast_work, _brcmf_set_multicast_list); 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; /* Room for "event_msgs" + '\0' + bitvec */ char iovbuf[BRCMF_EVENTING_MASK_LEN + 12]; struct brcmf_bus *bus_if = dev_get_drvdata(dev); struct brcmf_pub *drvr = bus_if->drvr; brcmf_dbg(TRACE, "\n"); /* Bring up the bus */ ret = bus_if->brcmf_bus_init(dev); if (ret != 0) { brcmf_dbg(ERROR, "brcmf_sdbrcm_bus_init failed %d\n", ret); return ret; } brcmf_c_mkiovar("event_msgs", drvr->eventmask, BRCMF_EVENTING_MASK_LEN, iovbuf, sizeof(iovbuf)); brcmf_proto_cdc_query_dcmd(drvr, 0, BRCMF_C_GET_VAR, iovbuf, sizeof(iovbuf)); memcpy(drvr->eventmask, iovbuf, BRCMF_EVENTING_MASK_LEN); setbit(drvr->eventmask, BRCMF_E_SET_SSID); setbit(drvr->eventmask, BRCMF_E_PRUNE); setbit(drvr->eventmask, BRCMF_E_AUTH); setbit(drvr->eventmask, BRCMF_E_REASSOC); setbit(drvr->eventmask, BRCMF_E_REASSOC_IND); setbit(drvr->eventmask, BRCMF_E_DEAUTH_IND); setbit(drvr->eventmask, BRCMF_E_DISASSOC_IND); setbit(drvr->eventmask, BRCMF_E_DISASSOC); setbit(drvr->eventmask, BRCMF_E_JOIN); setbit(drvr->eventmask, BRCMF_E_ASSOC_IND); setbit(drvr->eventmask, BRCMF_E_PSK_SUP); setbit(drvr->eventmask, BRCMF_E_LINK); setbit(drvr->eventmask, BRCMF_E_NDIS_LINK); setbit(drvr->eventmask, BRCMF_E_MIC_ERROR); setbit(drvr->eventmask, BRCMF_E_PMKID_CACHE); setbit(drvr->eventmask, BRCMF_E_TXFAIL); setbit(drvr->eventmask, BRCMF_E_JOIN_START); setbit(drvr->eventmask, BRCMF_E_SCAN_COMPLETE); /* enable dongle roaming event */ drvr->pktfilter_count = 1; /* Setup filter to allow only unicast */ drvr->pktfilter[0] = "100 0 0 0 0x01 0x00"; /* Bus is ready, do any protocol initialization */ ret = brcmf_proto_init(drvr); if (ret < 0) return ret; /* add primary networking interface */ ret = brcmf_add_if(dev, 0, "wlan%d", drvr->mac); if (ret < 0) return ret; /* signal bus ready */ bus_if->state = BRCMF_BUS_DATA; 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 */ drvr->bus_if->brcmf_bus_stop(drvr->dev); } } void brcmf_detach(struct device *dev) { int i; struct brcmf_bus *bus_if = dev_get_drvdata(dev); struct brcmf_pub *drvr = bus_if->drvr; brcmf_dbg(TRACE, "Enter\n"); /* 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) { cancel_work_sync(&drvr->setmacaddr_work); cancel_work_sync(&drvr->multicast_work); brcmf_proto_detach(drvr); } brcmf_debugfs_detach(drvr); bus_if->drvr = NULL; kfree(drvr); } static int brcmf_get_pend_8021x_cnt(struct brcmf_pub *drvr) { return atomic_read(&drvr->pend_8021x_cnt); } #define MAX_WAIT_FOR_8021X_TX 10 int brcmf_netdev_wait_pend8021x(struct net_device *ndev) { struct brcmf_if *ifp = netdev_priv(ndev); struct brcmf_pub *drvr = ifp->drvr; int timeout = 10 * HZ / 1000; int ntimes = MAX_WAIT_FOR_8021X_TX; int pend = brcmf_get_pend_8021x_cnt(drvr); while (ntimes && pend) { if (pend) { set_current_state(TASK_INTERRUPTIBLE); schedule_timeout(timeout); set_current_state(TASK_RUNNING); ntimes--; } pend = brcmf_get_pend_8021x_cnt(drvr); } return pend; } #ifdef DEBUG int brcmf_write_to_file(struct brcmf_pub *drvr, const u8 *buf, int size) { int ret = 0; struct file *fp; mm_segment_t old_fs; loff_t pos = 0; /* change to KERNEL_DS address limit */ old_fs = get_fs(); set_fs(KERNEL_DS); /* open file to write */ fp = filp_open("/tmp/mem_dump", O_WRONLY | O_CREAT, 0640); if (!fp) { brcmf_dbg(ERROR, "open file error\n"); ret = -1; goto exit; } /* Write buf to file */ fp->f_op->write(fp, (char __user *)buf, size, &pos); exit: /* free buf before return */ kfree(buf); /* close file before return */ if (fp) filp_close(fp, current->files); /* restore previous address limit */ set_fs(old_fs); return ret; } #endif /* DEBUG */ 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);