| /* |
| * Host AP (software wireless LAN access point) driver for |
| * Intersil Prism2/2.5/3 - hostap.o module, common routines |
| * |
| * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen |
| * <j@w1.fi> |
| * Copyright (c) 2002-2005, Jouni Malinen <j@w1.fi> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. See README and COPYING for |
| * more details. |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/slab.h> |
| #include <linux/proc_fs.h> |
| #include <linux/if_arp.h> |
| #include <linux/delay.h> |
| #include <linux/random.h> |
| #include <linux/workqueue.h> |
| #include <linux/kmod.h> |
| #include <linux/rtnetlink.h> |
| #include <linux/wireless.h> |
| #include <linux/etherdevice.h> |
| #include <net/net_namespace.h> |
| #include <net/iw_handler.h> |
| #include <net/lib80211.h> |
| #include <asm/uaccess.h> |
| |
| #include "hostap_wlan.h" |
| #include "hostap_80211.h" |
| #include "hostap_ap.h" |
| #include "hostap.h" |
| |
| MODULE_AUTHOR("Jouni Malinen"); |
| MODULE_DESCRIPTION("Host AP common routines"); |
| MODULE_LICENSE("GPL"); |
| |
| #define TX_TIMEOUT (2 * HZ) |
| |
| #define PRISM2_MAX_FRAME_SIZE 2304 |
| #define PRISM2_MIN_MTU 256 |
| /* FIX: */ |
| #define PRISM2_MAX_MTU (PRISM2_MAX_FRAME_SIZE - (6 /* LLC */ + 8 /* WEP */)) |
| |
| |
| struct net_device * hostap_add_interface(struct local_info *local, |
| int type, int rtnl_locked, |
| const char *prefix, |
| const char *name) |
| { |
| struct net_device *dev, *mdev; |
| struct hostap_interface *iface; |
| int ret; |
| |
| dev = alloc_etherdev(sizeof(struct hostap_interface)); |
| if (dev == NULL) |
| return NULL; |
| |
| iface = netdev_priv(dev); |
| iface->dev = dev; |
| iface->local = local; |
| iface->type = type; |
| list_add(&iface->list, &local->hostap_interfaces); |
| |
| mdev = local->dev; |
| memcpy(dev->dev_addr, mdev->dev_addr, ETH_ALEN); |
| dev->base_addr = mdev->base_addr; |
| dev->irq = mdev->irq; |
| dev->mem_start = mdev->mem_start; |
| dev->mem_end = mdev->mem_end; |
| |
| hostap_setup_dev(dev, local, type); |
| dev->destructor = free_netdev; |
| |
| sprintf(dev->name, "%s%s", prefix, name); |
| if (!rtnl_locked) |
| rtnl_lock(); |
| |
| ret = 0; |
| if (strchr(dev->name, '%')) |
| ret = dev_alloc_name(dev, dev->name); |
| |
| SET_NETDEV_DEV(dev, mdev->dev.parent); |
| if (ret >= 0) |
| ret = register_netdevice(dev); |
| |
| if (!rtnl_locked) |
| rtnl_unlock(); |
| |
| if (ret < 0) { |
| printk(KERN_WARNING "%s: failed to add new netdevice!\n", |
| dev->name); |
| free_netdev(dev); |
| return NULL; |
| } |
| |
| printk(KERN_DEBUG "%s: registered netdevice %s\n", |
| mdev->name, dev->name); |
| |
| return dev; |
| } |
| |
| |
| void hostap_remove_interface(struct net_device *dev, int rtnl_locked, |
| int remove_from_list) |
| { |
| struct hostap_interface *iface; |
| |
| if (!dev) |
| return; |
| |
| iface = netdev_priv(dev); |
| |
| if (remove_from_list) { |
| list_del(&iface->list); |
| } |
| |
| if (dev == iface->local->ddev) |
| iface->local->ddev = NULL; |
| else if (dev == iface->local->apdev) |
| iface->local->apdev = NULL; |
| else if (dev == iface->local->stadev) |
| iface->local->stadev = NULL; |
| |
| if (rtnl_locked) |
| unregister_netdevice(dev); |
| else |
| unregister_netdev(dev); |
| |
| /* dev->destructor = free_netdev() will free the device data, including |
| * private data, when removing the device */ |
| } |
| |
| |
| static inline int prism2_wds_special_addr(u8 *addr) |
| { |
| if (addr[0] || addr[1] || addr[2] || addr[3] || addr[4] || addr[5]) |
| return 0; |
| |
| return 1; |
| } |
| |
| |
| int prism2_wds_add(local_info_t *local, u8 *remote_addr, |
| int rtnl_locked) |
| { |
| struct net_device *dev; |
| struct list_head *ptr; |
| struct hostap_interface *iface, *empty, *match; |
| |
| empty = match = NULL; |
| read_lock_bh(&local->iface_lock); |
| list_for_each(ptr, &local->hostap_interfaces) { |
| iface = list_entry(ptr, struct hostap_interface, list); |
| if (iface->type != HOSTAP_INTERFACE_WDS) |
| continue; |
| |
| if (prism2_wds_special_addr(iface->u.wds.remote_addr)) |
| empty = iface; |
| else if (memcmp(iface->u.wds.remote_addr, remote_addr, |
| ETH_ALEN) == 0) { |
| match = iface; |
| break; |
| } |
| } |
| if (!match && empty && !prism2_wds_special_addr(remote_addr)) { |
| /* take pre-allocated entry into use */ |
| memcpy(empty->u.wds.remote_addr, remote_addr, ETH_ALEN); |
| read_unlock_bh(&local->iface_lock); |
| printk(KERN_DEBUG "%s: using pre-allocated WDS netdevice %s\n", |
| local->dev->name, empty->dev->name); |
| return 0; |
| } |
| read_unlock_bh(&local->iface_lock); |
| |
| if (!prism2_wds_special_addr(remote_addr)) { |
| if (match) |
| return -EEXIST; |
| hostap_add_sta(local->ap, remote_addr); |
| } |
| |
| if (local->wds_connections >= local->wds_max_connections) |
| return -ENOBUFS; |
| |
| /* verify that there is room for wds# postfix in the interface name */ |
| if (strlen(local->dev->name) > IFNAMSIZ - 5) { |
| printk(KERN_DEBUG "'%s' too long base device name\n", |
| local->dev->name); |
| return -EINVAL; |
| } |
| |
| dev = hostap_add_interface(local, HOSTAP_INTERFACE_WDS, rtnl_locked, |
| local->ddev->name, "wds%d"); |
| if (dev == NULL) |
| return -ENOMEM; |
| |
| iface = netdev_priv(dev); |
| memcpy(iface->u.wds.remote_addr, remote_addr, ETH_ALEN); |
| |
| local->wds_connections++; |
| |
| return 0; |
| } |
| |
| |
| int prism2_wds_del(local_info_t *local, u8 *remote_addr, |
| int rtnl_locked, int do_not_remove) |
| { |
| unsigned long flags; |
| struct list_head *ptr; |
| struct hostap_interface *iface, *selected = NULL; |
| |
| write_lock_irqsave(&local->iface_lock, flags); |
| list_for_each(ptr, &local->hostap_interfaces) { |
| iface = list_entry(ptr, struct hostap_interface, list); |
| if (iface->type != HOSTAP_INTERFACE_WDS) |
| continue; |
| |
| if (memcmp(iface->u.wds.remote_addr, remote_addr, |
| ETH_ALEN) == 0) { |
| selected = iface; |
| break; |
| } |
| } |
| if (selected && !do_not_remove) |
| list_del(&selected->list); |
| write_unlock_irqrestore(&local->iface_lock, flags); |
| |
| if (selected) { |
| if (do_not_remove) |
| memset(selected->u.wds.remote_addr, 0, ETH_ALEN); |
| else { |
| hostap_remove_interface(selected->dev, rtnl_locked, 0); |
| local->wds_connections--; |
| } |
| } |
| |
| return selected ? 0 : -ENODEV; |
| } |
| |
| |
| u16 hostap_tx_callback_register(local_info_t *local, |
| void (*func)(struct sk_buff *, int ok, void *), |
| void *data) |
| { |
| unsigned long flags; |
| struct hostap_tx_callback_info *entry; |
| |
| entry = kmalloc(sizeof(*entry), |
| GFP_ATOMIC); |
| if (entry == NULL) |
| return 0; |
| |
| entry->func = func; |
| entry->data = data; |
| |
| spin_lock_irqsave(&local->lock, flags); |
| entry->idx = local->tx_callback ? local->tx_callback->idx + 1 : 1; |
| entry->next = local->tx_callback; |
| local->tx_callback = entry; |
| spin_unlock_irqrestore(&local->lock, flags); |
| |
| return entry->idx; |
| } |
| |
| |
| int hostap_tx_callback_unregister(local_info_t *local, u16 idx) |
| { |
| unsigned long flags; |
| struct hostap_tx_callback_info *cb, *prev = NULL; |
| |
| spin_lock_irqsave(&local->lock, flags); |
| cb = local->tx_callback; |
| while (cb != NULL && cb->idx != idx) { |
| prev = cb; |
| cb = cb->next; |
| } |
| if (cb) { |
| if (prev == NULL) |
| local->tx_callback = cb->next; |
| else |
| prev->next = cb->next; |
| kfree(cb); |
| } |
| spin_unlock_irqrestore(&local->lock, flags); |
| |
| return cb ? 0 : -1; |
| } |
| |
| |
| /* val is in host byte order */ |
| int hostap_set_word(struct net_device *dev, int rid, u16 val) |
| { |
| struct hostap_interface *iface; |
| __le16 tmp = cpu_to_le16(val); |
| iface = netdev_priv(dev); |
| return iface->local->func->set_rid(dev, rid, &tmp, 2); |
| } |
| |
| |
| int hostap_set_string(struct net_device *dev, int rid, const char *val) |
| { |
| struct hostap_interface *iface; |
| char buf[MAX_SSID_LEN + 2]; |
| int len; |
| |
| iface = netdev_priv(dev); |
| len = strlen(val); |
| if (len > MAX_SSID_LEN) |
| return -1; |
| memset(buf, 0, sizeof(buf)); |
| buf[0] = len; /* little endian 16 bit word */ |
| memcpy(buf + 2, val, len); |
| |
| return iface->local->func->set_rid(dev, rid, &buf, MAX_SSID_LEN + 2); |
| } |
| |
| |
| u16 hostap_get_porttype(local_info_t *local) |
| { |
| if (local->iw_mode == IW_MODE_ADHOC && local->pseudo_adhoc) |
| return HFA384X_PORTTYPE_PSEUDO_IBSS; |
| if (local->iw_mode == IW_MODE_ADHOC) |
| return HFA384X_PORTTYPE_IBSS; |
| if (local->iw_mode == IW_MODE_INFRA) |
| return HFA384X_PORTTYPE_BSS; |
| if (local->iw_mode == IW_MODE_REPEAT) |
| return HFA384X_PORTTYPE_WDS; |
| if (local->iw_mode == IW_MODE_MONITOR) |
| return HFA384X_PORTTYPE_PSEUDO_IBSS; |
| return HFA384X_PORTTYPE_HOSTAP; |
| } |
| |
| |
| int hostap_set_encryption(local_info_t *local) |
| { |
| u16 val, old_val; |
| int i, keylen, len, idx; |
| char keybuf[WEP_KEY_LEN + 1]; |
| enum { NONE, WEP, OTHER } encrypt_type; |
| |
| idx = local->crypt_info.tx_keyidx; |
| if (local->crypt_info.crypt[idx] == NULL || |
| local->crypt_info.crypt[idx]->ops == NULL) |
| encrypt_type = NONE; |
| else if (strcmp(local->crypt_info.crypt[idx]->ops->name, "WEP") == 0) |
| encrypt_type = WEP; |
| else |
| encrypt_type = OTHER; |
| |
| if (local->func->get_rid(local->dev, HFA384X_RID_CNFWEPFLAGS, &val, 2, |
| 1) < 0) { |
| printk(KERN_DEBUG "Could not read current WEP flags.\n"); |
| goto fail; |
| } |
| le16_to_cpus(&val); |
| old_val = val; |
| |
| if (encrypt_type != NONE || local->privacy_invoked) |
| val |= HFA384X_WEPFLAGS_PRIVACYINVOKED; |
| else |
| val &= ~HFA384X_WEPFLAGS_PRIVACYINVOKED; |
| |
| if (local->open_wep || encrypt_type == NONE || |
| ((local->ieee_802_1x || local->wpa) && local->host_decrypt)) |
| val &= ~HFA384X_WEPFLAGS_EXCLUDEUNENCRYPTED; |
| else |
| val |= HFA384X_WEPFLAGS_EXCLUDEUNENCRYPTED; |
| |
| if ((encrypt_type != NONE || local->privacy_invoked) && |
| (encrypt_type == OTHER || local->host_encrypt)) |
| val |= HFA384X_WEPFLAGS_HOSTENCRYPT; |
| else |
| val &= ~HFA384X_WEPFLAGS_HOSTENCRYPT; |
| if ((encrypt_type != NONE || local->privacy_invoked) && |
| (encrypt_type == OTHER || local->host_decrypt)) |
| val |= HFA384X_WEPFLAGS_HOSTDECRYPT; |
| else |
| val &= ~HFA384X_WEPFLAGS_HOSTDECRYPT; |
| |
| if (val != old_val && |
| hostap_set_word(local->dev, HFA384X_RID_CNFWEPFLAGS, val)) { |
| printk(KERN_DEBUG "Could not write new WEP flags (0x%x)\n", |
| val); |
| goto fail; |
| } |
| |
| if (encrypt_type != WEP) |
| return 0; |
| |
| /* 104-bit support seems to require that all the keys are set to the |
| * same keylen */ |
| keylen = 6; /* first 5 octets */ |
| len = local->crypt_info.crypt[idx]->ops->get_key(keybuf, sizeof(keybuf), NULL, |
| local->crypt_info.crypt[idx]->priv); |
| if (idx >= 0 && idx < WEP_KEYS && len > 5) |
| keylen = WEP_KEY_LEN + 1; /* first 13 octets */ |
| |
| for (i = 0; i < WEP_KEYS; i++) { |
| memset(keybuf, 0, sizeof(keybuf)); |
| if (local->crypt_info.crypt[i]) { |
| (void) local->crypt_info.crypt[i]->ops->get_key( |
| keybuf, sizeof(keybuf), |
| NULL, local->crypt_info.crypt[i]->priv); |
| } |
| if (local->func->set_rid(local->dev, |
| HFA384X_RID_CNFDEFAULTKEY0 + i, |
| keybuf, keylen)) { |
| printk(KERN_DEBUG "Could not set key %d (len=%d)\n", |
| i, keylen); |
| goto fail; |
| } |
| } |
| if (hostap_set_word(local->dev, HFA384X_RID_CNFWEPDEFAULTKEYID, idx)) { |
| printk(KERN_DEBUG "Could not set default keyid %d\n", idx); |
| goto fail; |
| } |
| |
| return 0; |
| |
| fail: |
| printk(KERN_DEBUG "%s: encryption setup failed\n", local->dev->name); |
| return -1; |
| } |
| |
| |
| int hostap_set_antsel(local_info_t *local) |
| { |
| u16 val; |
| int ret = 0; |
| |
| if (local->antsel_tx != HOSTAP_ANTSEL_DO_NOT_TOUCH && |
| local->func->cmd(local->dev, HFA384X_CMDCODE_READMIF, |
| HFA386X_CR_TX_CONFIGURE, |
| NULL, &val) == 0) { |
| val &= ~(BIT(2) | BIT(1)); |
| switch (local->antsel_tx) { |
| case HOSTAP_ANTSEL_DIVERSITY: |
| val |= BIT(1); |
| break; |
| case HOSTAP_ANTSEL_LOW: |
| break; |
| case HOSTAP_ANTSEL_HIGH: |
| val |= BIT(2); |
| break; |
| } |
| |
| if (local->func->cmd(local->dev, HFA384X_CMDCODE_WRITEMIF, |
| HFA386X_CR_TX_CONFIGURE, &val, NULL)) { |
| printk(KERN_INFO "%s: setting TX AntSel failed\n", |
| local->dev->name); |
| ret = -1; |
| } |
| } |
| |
| if (local->antsel_rx != HOSTAP_ANTSEL_DO_NOT_TOUCH && |
| local->func->cmd(local->dev, HFA384X_CMDCODE_READMIF, |
| HFA386X_CR_RX_CONFIGURE, |
| NULL, &val) == 0) { |
| val &= ~(BIT(1) | BIT(0)); |
| switch (local->antsel_rx) { |
| case HOSTAP_ANTSEL_DIVERSITY: |
| break; |
| case HOSTAP_ANTSEL_LOW: |
| val |= BIT(0); |
| break; |
| case HOSTAP_ANTSEL_HIGH: |
| val |= BIT(0) | BIT(1); |
| break; |
| } |
| |
| if (local->func->cmd(local->dev, HFA384X_CMDCODE_WRITEMIF, |
| HFA386X_CR_RX_CONFIGURE, &val, NULL)) { |
| printk(KERN_INFO "%s: setting RX AntSel failed\n", |
| local->dev->name); |
| ret = -1; |
| } |
| } |
| |
| return ret; |
| } |
| |
| |
| int hostap_set_roaming(local_info_t *local) |
| { |
| u16 val; |
| |
| switch (local->host_roaming) { |
| case 1: |
| val = HFA384X_ROAMING_HOST; |
| break; |
| case 2: |
| val = HFA384X_ROAMING_DISABLED; |
| break; |
| case 0: |
| default: |
| val = HFA384X_ROAMING_FIRMWARE; |
| break; |
| } |
| |
| return hostap_set_word(local->dev, HFA384X_RID_CNFROAMINGMODE, val); |
| } |
| |
| |
| int hostap_set_auth_algs(local_info_t *local) |
| { |
| int val = local->auth_algs; |
| /* At least STA f/w v0.6.2 seems to have issues with cnfAuthentication |
| * set to include both Open and Shared Key flags. It tries to use |
| * Shared Key authentication in that case even if WEP keys are not |
| * configured.. STA f/w v0.7.6 is able to handle such configuration, |
| * but it is unknown when this was fixed between 0.6.2 .. 0.7.6. */ |
| if (local->sta_fw_ver < PRISM2_FW_VER(0,7,0) && |
| val != PRISM2_AUTH_OPEN && val != PRISM2_AUTH_SHARED_KEY) |
| val = PRISM2_AUTH_OPEN; |
| |
| if (hostap_set_word(local->dev, HFA384X_RID_CNFAUTHENTICATION, val)) { |
| printk(KERN_INFO "%s: cnfAuthentication setting to 0x%x " |
| "failed\n", local->dev->name, local->auth_algs); |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| |
| void hostap_dump_rx_header(const char *name, const struct hfa384x_rx_frame *rx) |
| { |
| u16 status, fc; |
| |
| status = __le16_to_cpu(rx->status); |
| |
| printk(KERN_DEBUG "%s: RX status=0x%04x (port=%d, type=%d, " |
| "fcserr=%d) silence=%d signal=%d rate=%d rxflow=%d; " |
| "jiffies=%ld\n", |
| name, status, (status >> 8) & 0x07, status >> 13, status & 1, |
| rx->silence, rx->signal, rx->rate, rx->rxflow, jiffies); |
| |
| fc = __le16_to_cpu(rx->frame_control); |
| printk(KERN_DEBUG " FC=0x%04x (type=%d:%d) dur=0x%04x seq=0x%04x " |
| "data_len=%d%s%s\n", |
| fc, (fc & IEEE80211_FCTL_FTYPE) >> 2, |
| (fc & IEEE80211_FCTL_STYPE) >> 4, |
| __le16_to_cpu(rx->duration_id), __le16_to_cpu(rx->seq_ctrl), |
| __le16_to_cpu(rx->data_len), |
| fc & IEEE80211_FCTL_TODS ? " [ToDS]" : "", |
| fc & IEEE80211_FCTL_FROMDS ? " [FromDS]" : ""); |
| |
| printk(KERN_DEBUG " A1=%pM A2=%pM A3=%pM A4=%pM\n", |
| rx->addr1, rx->addr2, rx->addr3, rx->addr4); |
| |
| printk(KERN_DEBUG " dst=%pM src=%pM len=%d\n", |
| rx->dst_addr, rx->src_addr, |
| __be16_to_cpu(rx->len)); |
| } |
| |
| |
| void hostap_dump_tx_header(const char *name, const struct hfa384x_tx_frame *tx) |
| { |
| u16 fc; |
| |
| printk(KERN_DEBUG "%s: TX status=0x%04x retry_count=%d tx_rate=%d " |
| "tx_control=0x%04x; jiffies=%ld\n", |
| name, __le16_to_cpu(tx->status), tx->retry_count, tx->tx_rate, |
| __le16_to_cpu(tx->tx_control), jiffies); |
| |
| fc = __le16_to_cpu(tx->frame_control); |
| printk(KERN_DEBUG " FC=0x%04x (type=%d:%d) dur=0x%04x seq=0x%04x " |
| "data_len=%d%s%s\n", |
| fc, (fc & IEEE80211_FCTL_FTYPE) >> 2, |
| (fc & IEEE80211_FCTL_STYPE) >> 4, |
| __le16_to_cpu(tx->duration_id), __le16_to_cpu(tx->seq_ctrl), |
| __le16_to_cpu(tx->data_len), |
| fc & IEEE80211_FCTL_TODS ? " [ToDS]" : "", |
| fc & IEEE80211_FCTL_FROMDS ? " [FromDS]" : ""); |
| |
| printk(KERN_DEBUG " A1=%pM A2=%pM A3=%pM A4=%pM\n", |
| tx->addr1, tx->addr2, tx->addr3, tx->addr4); |
| |
| printk(KERN_DEBUG " dst=%pM src=%pM len=%d\n", |
| tx->dst_addr, tx->src_addr, |
| __be16_to_cpu(tx->len)); |
| } |
| |
| |
| static int hostap_80211_header_parse(const struct sk_buff *skb, |
| unsigned char *haddr) |
| { |
| memcpy(haddr, skb_mac_header(skb) + 10, ETH_ALEN); /* addr2 */ |
| return ETH_ALEN; |
| } |
| |
| |
| int hostap_80211_get_hdrlen(__le16 fc) |
| { |
| if (ieee80211_is_data(fc) && ieee80211_has_a4 (fc)) |
| return 30; /* Addr4 */ |
| else if (ieee80211_is_cts(fc) || ieee80211_is_ack(fc)) |
| return 10; |
| else if (ieee80211_is_ctl(fc)) |
| return 16; |
| |
| return 24; |
| } |
| |
| |
| struct net_device_stats *hostap_get_stats(struct net_device *dev) |
| { |
| struct hostap_interface *iface; |
| iface = netdev_priv(dev); |
| return &iface->stats; |
| } |
| |
| |
| static int prism2_close(struct net_device *dev) |
| { |
| struct hostap_interface *iface; |
| local_info_t *local; |
| |
| PDEBUG(DEBUG_FLOW, "%s: prism2_close\n", dev->name); |
| |
| iface = netdev_priv(dev); |
| local = iface->local; |
| |
| if (dev == local->ddev) { |
| prism2_sta_deauth(local, WLAN_REASON_DEAUTH_LEAVING); |
| } |
| #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT |
| if (!local->hostapd && dev == local->dev && |
| (!local->func->card_present || local->func->card_present(local)) && |
| local->hw_ready && local->ap && local->iw_mode == IW_MODE_MASTER) |
| hostap_deauth_all_stas(dev, local->ap, 1); |
| #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ |
| |
| if (dev == local->dev) { |
| local->func->hw_shutdown(dev, HOSTAP_HW_ENABLE_CMDCOMPL); |
| } |
| |
| if (netif_running(dev)) { |
| netif_stop_queue(dev); |
| netif_device_detach(dev); |
| } |
| |
| cancel_work_sync(&local->reset_queue); |
| cancel_work_sync(&local->set_multicast_list_queue); |
| cancel_work_sync(&local->set_tim_queue); |
| #ifndef PRISM2_NO_STATION_MODES |
| cancel_work_sync(&local->info_queue); |
| #endif |
| cancel_work_sync(&local->comms_qual_update); |
| |
| module_put(local->hw_module); |
| |
| local->num_dev_open--; |
| |
| if (dev != local->dev && local->dev->flags & IFF_UP && |
| local->master_dev_auto_open && local->num_dev_open == 1) { |
| /* Close master radio interface automatically if it was also |
| * opened automatically and we are now closing the last |
| * remaining non-master device. */ |
| dev_close(local->dev); |
| } |
| |
| return 0; |
| } |
| |
| |
| static int prism2_open(struct net_device *dev) |
| { |
| struct hostap_interface *iface; |
| local_info_t *local; |
| |
| PDEBUG(DEBUG_FLOW, "%s: prism2_open\n", dev->name); |
| |
| iface = netdev_priv(dev); |
| local = iface->local; |
| |
| if (local->no_pri) { |
| printk(KERN_DEBUG "%s: could not set interface UP - no PRI " |
| "f/w\n", dev->name); |
| return 1; |
| } |
| |
| if ((local->func->card_present && !local->func->card_present(local)) || |
| local->hw_downloading) |
| return -ENODEV; |
| |
| if (!try_module_get(local->hw_module)) |
| return -ENODEV; |
| local->num_dev_open++; |
| |
| if (!local->dev_enabled && local->func->hw_enable(dev, 1)) { |
| printk(KERN_WARNING "%s: could not enable MAC port\n", |
| dev->name); |
| prism2_close(dev); |
| return 1; |
| } |
| if (!local->dev_enabled) |
| prism2_callback(local, PRISM2_CALLBACK_ENABLE); |
| local->dev_enabled = 1; |
| |
| if (dev != local->dev && !(local->dev->flags & IFF_UP)) { |
| /* Master radio interface is needed for all operation, so open |
| * it automatically when any virtual net_device is opened. */ |
| local->master_dev_auto_open = 1; |
| dev_open(local->dev); |
| } |
| |
| netif_device_attach(dev); |
| netif_start_queue(dev); |
| |
| return 0; |
| } |
| |
| |
| static int prism2_set_mac_address(struct net_device *dev, void *p) |
| { |
| struct hostap_interface *iface; |
| local_info_t *local; |
| struct list_head *ptr; |
| struct sockaddr *addr = p; |
| |
| iface = netdev_priv(dev); |
| local = iface->local; |
| |
| if (local->func->set_rid(dev, HFA384X_RID_CNFOWNMACADDR, addr->sa_data, |
| ETH_ALEN) < 0 || local->func->reset_port(dev)) |
| return -EINVAL; |
| |
| read_lock_bh(&local->iface_lock); |
| list_for_each(ptr, &local->hostap_interfaces) { |
| iface = list_entry(ptr, struct hostap_interface, list); |
| memcpy(iface->dev->dev_addr, addr->sa_data, ETH_ALEN); |
| } |
| memcpy(local->dev->dev_addr, addr->sa_data, ETH_ALEN); |
| read_unlock_bh(&local->iface_lock); |
| |
| return 0; |
| } |
| |
| |
| /* TODO: to be further implemented as soon as Prism2 fully supports |
| * GroupAddresses and correct documentation is available */ |
| void hostap_set_multicast_list_queue(struct work_struct *work) |
| { |
| local_info_t *local = |
| container_of(work, local_info_t, set_multicast_list_queue); |
| struct net_device *dev = local->dev; |
| struct hostap_interface *iface; |
| |
| iface = netdev_priv(dev); |
| if (hostap_set_word(dev, HFA384X_RID_PROMISCUOUSMODE, |
| local->is_promisc)) { |
| printk(KERN_INFO "%s: %sabling promiscuous mode failed\n", |
| dev->name, local->is_promisc ? "en" : "dis"); |
| } |
| } |
| |
| |
| static void hostap_set_multicast_list(struct net_device *dev) |
| { |
| #if 0 |
| /* FIX: promiscuous mode seems to be causing a lot of problems with |
| * some station firmware versions (FCSErr frames, invalid MACPort, etc. |
| * corrupted incoming frames). This code is now commented out while the |
| * problems are investigated. */ |
| struct hostap_interface *iface; |
| local_info_t *local; |
| |
| iface = netdev_priv(dev); |
| local = iface->local; |
| if ((dev->flags & IFF_ALLMULTI) || (dev->flags & IFF_PROMISC)) { |
| local->is_promisc = 1; |
| } else { |
| local->is_promisc = 0; |
| } |
| |
| schedule_work(&local->set_multicast_list_queue); |
| #endif |
| } |
| |
| |
| static int prism2_change_mtu(struct net_device *dev, int new_mtu) |
| { |
| if (new_mtu < PRISM2_MIN_MTU || new_mtu > PRISM2_MAX_MTU) |
| return -EINVAL; |
| |
| dev->mtu = new_mtu; |
| return 0; |
| } |
| |
| |
| static void prism2_tx_timeout(struct net_device *dev) |
| { |
| struct hostap_interface *iface; |
| local_info_t *local; |
| struct hfa384x_regs regs; |
| |
| iface = netdev_priv(dev); |
| local = iface->local; |
| |
| printk(KERN_WARNING "%s Tx timed out! Resetting card\n", dev->name); |
| netif_stop_queue(local->dev); |
| |
| local->func->read_regs(dev, ®s); |
| printk(KERN_DEBUG "%s: CMD=%04x EVSTAT=%04x " |
| "OFFSET0=%04x OFFSET1=%04x SWSUPPORT0=%04x\n", |
| dev->name, regs.cmd, regs.evstat, regs.offset0, regs.offset1, |
| regs.swsupport0); |
| |
| local->func->schedule_reset(local); |
| } |
| |
| const struct header_ops hostap_80211_ops = { |
| .create = eth_header, |
| .rebuild = eth_rebuild_header, |
| .cache = eth_header_cache, |
| .cache_update = eth_header_cache_update, |
| .parse = hostap_80211_header_parse, |
| }; |
| EXPORT_SYMBOL(hostap_80211_ops); |
| |
| void hostap_setup_dev(struct net_device *dev, local_info_t *local, |
| int type) |
| { |
| struct hostap_interface *iface; |
| |
| iface = netdev_priv(dev); |
| ether_setup(dev); |
| |
| /* kernel callbacks */ |
| dev->get_stats = hostap_get_stats; |
| if (iface) { |
| /* Currently, we point to the proper spy_data only on |
| * the main_dev. This could be fixed. Jean II */ |
| iface->wireless_data.spy_data = &iface->spy_data; |
| dev->wireless_data = &iface->wireless_data; |
| } |
| dev->wireless_handlers = |
| (struct iw_handler_def *) &hostap_iw_handler_def; |
| dev->do_ioctl = hostap_ioctl; |
| dev->open = prism2_open; |
| dev->stop = prism2_close; |
| dev->set_mac_address = prism2_set_mac_address; |
| dev->set_multicast_list = hostap_set_multicast_list; |
| dev->change_mtu = prism2_change_mtu; |
| dev->tx_timeout = prism2_tx_timeout; |
| dev->watchdog_timeo = TX_TIMEOUT; |
| |
| if (type == HOSTAP_INTERFACE_AP) { |
| dev->hard_start_xmit = hostap_mgmt_start_xmit; |
| dev->type = ARPHRD_IEEE80211; |
| dev->header_ops = &hostap_80211_ops; |
| } else { |
| dev->hard_start_xmit = hostap_data_start_xmit; |
| } |
| |
| dev->mtu = local->mtu; |
| if (type != HOSTAP_INTERFACE_MASTER) { |
| /* use main radio device queue */ |
| dev->tx_queue_len = 0; |
| } |
| |
| SET_ETHTOOL_OPS(dev, &prism2_ethtool_ops); |
| |
| netif_stop_queue(dev); |
| } |
| |
| static int hostap_enable_hostapd(local_info_t *local, int rtnl_locked) |
| { |
| struct net_device *dev = local->dev; |
| |
| if (local->apdev) |
| return -EEXIST; |
| |
| printk(KERN_DEBUG "%s: enabling hostapd mode\n", dev->name); |
| |
| local->apdev = hostap_add_interface(local, HOSTAP_INTERFACE_AP, |
| rtnl_locked, local->ddev->name, |
| "ap"); |
| if (local->apdev == NULL) |
| return -ENOMEM; |
| |
| return 0; |
| } |
| |
| |
| static int hostap_disable_hostapd(local_info_t *local, int rtnl_locked) |
| { |
| struct net_device *dev = local->dev; |
| |
| printk(KERN_DEBUG "%s: disabling hostapd mode\n", dev->name); |
| |
| hostap_remove_interface(local->apdev, rtnl_locked, 1); |
| local->apdev = NULL; |
| |
| return 0; |
| } |
| |
| |
| static int hostap_enable_hostapd_sta(local_info_t *local, int rtnl_locked) |
| { |
| struct net_device *dev = local->dev; |
| |
| if (local->stadev) |
| return -EEXIST; |
| |
| printk(KERN_DEBUG "%s: enabling hostapd STA mode\n", dev->name); |
| |
| local->stadev = hostap_add_interface(local, HOSTAP_INTERFACE_STA, |
| rtnl_locked, local->ddev->name, |
| "sta"); |
| if (local->stadev == NULL) |
| return -ENOMEM; |
| |
| return 0; |
| } |
| |
| |
| static int hostap_disable_hostapd_sta(local_info_t *local, int rtnl_locked) |
| { |
| struct net_device *dev = local->dev; |
| |
| printk(KERN_DEBUG "%s: disabling hostapd mode\n", dev->name); |
| |
| hostap_remove_interface(local->stadev, rtnl_locked, 1); |
| local->stadev = NULL; |
| |
| return 0; |
| } |
| |
| |
| int hostap_set_hostapd(local_info_t *local, int val, int rtnl_locked) |
| { |
| int ret; |
| |
| if (val < 0 || val > 1) |
| return -EINVAL; |
| |
| if (local->hostapd == val) |
| return 0; |
| |
| if (val) { |
| ret = hostap_enable_hostapd(local, rtnl_locked); |
| if (ret == 0) |
| local->hostapd = 1; |
| } else { |
| local->hostapd = 0; |
| ret = hostap_disable_hostapd(local, rtnl_locked); |
| if (ret != 0) |
| local->hostapd = 1; |
| } |
| |
| return ret; |
| } |
| |
| |
| int hostap_set_hostapd_sta(local_info_t *local, int val, int rtnl_locked) |
| { |
| int ret; |
| |
| if (val < 0 || val > 1) |
| return -EINVAL; |
| |
| if (local->hostapd_sta == val) |
| return 0; |
| |
| if (val) { |
| ret = hostap_enable_hostapd_sta(local, rtnl_locked); |
| if (ret == 0) |
| local->hostapd_sta = 1; |
| } else { |
| local->hostapd_sta = 0; |
| ret = hostap_disable_hostapd_sta(local, rtnl_locked); |
| if (ret != 0) |
| local->hostapd_sta = 1; |
| } |
| |
| |
| return ret; |
| } |
| |
| |
| int prism2_update_comms_qual(struct net_device *dev) |
| { |
| struct hostap_interface *iface; |
| local_info_t *local; |
| int ret = 0; |
| struct hfa384x_comms_quality sq; |
| |
| iface = netdev_priv(dev); |
| local = iface->local; |
| if (!local->sta_fw_ver) |
| ret = -1; |
| else if (local->sta_fw_ver >= PRISM2_FW_VER(1,3,1)) { |
| if (local->func->get_rid(local->dev, |
| HFA384X_RID_DBMCOMMSQUALITY, |
| &sq, sizeof(sq), 1) >= 0) { |
| local->comms_qual = (s16) le16_to_cpu(sq.comm_qual); |
| local->avg_signal = (s16) le16_to_cpu(sq.signal_level); |
| local->avg_noise = (s16) le16_to_cpu(sq.noise_level); |
| local->last_comms_qual_update = jiffies; |
| } else |
| ret = -1; |
| } else { |
| if (local->func->get_rid(local->dev, HFA384X_RID_COMMSQUALITY, |
| &sq, sizeof(sq), 1) >= 0) { |
| local->comms_qual = le16_to_cpu(sq.comm_qual); |
| local->avg_signal = HFA384X_LEVEL_TO_dBm( |
| le16_to_cpu(sq.signal_level)); |
| local->avg_noise = HFA384X_LEVEL_TO_dBm( |
| le16_to_cpu(sq.noise_level)); |
| local->last_comms_qual_update = jiffies; |
| } else |
| ret = -1; |
| } |
| |
| return ret; |
| } |
| |
| |
| int prism2_sta_send_mgmt(local_info_t *local, u8 *dst, u16 stype, |
| u8 *body, size_t bodylen) |
| { |
| struct sk_buff *skb; |
| struct hostap_ieee80211_mgmt *mgmt; |
| struct hostap_skb_tx_data *meta; |
| struct net_device *dev = local->dev; |
| |
| skb = dev_alloc_skb(IEEE80211_MGMT_HDR_LEN + bodylen); |
| if (skb == NULL) |
| return -ENOMEM; |
| |
| mgmt = (struct hostap_ieee80211_mgmt *) |
| skb_put(skb, IEEE80211_MGMT_HDR_LEN); |
| memset(mgmt, 0, IEEE80211_MGMT_HDR_LEN); |
| mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype); |
| memcpy(mgmt->da, dst, ETH_ALEN); |
| memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); |
| memcpy(mgmt->bssid, dst, ETH_ALEN); |
| if (body) |
| memcpy(skb_put(skb, bodylen), body, bodylen); |
| |
| meta = (struct hostap_skb_tx_data *) skb->cb; |
| memset(meta, 0, sizeof(*meta)); |
| meta->magic = HOSTAP_SKB_TX_DATA_MAGIC; |
| meta->iface = netdev_priv(dev); |
| |
| skb->dev = dev; |
| skb_reset_mac_header(skb); |
| skb_reset_network_header(skb); |
| dev_queue_xmit(skb); |
| |
| return 0; |
| } |
| |
| |
| int prism2_sta_deauth(local_info_t *local, u16 reason) |
| { |
| union iwreq_data wrqu; |
| int ret; |
| __le16 val = cpu_to_le16(reason); |
| |
| if (local->iw_mode != IW_MODE_INFRA || |
| memcmp(local->bssid, "\x00\x00\x00\x00\x00\x00", ETH_ALEN) == 0 || |
| memcmp(local->bssid, "\x44\x44\x44\x44\x44\x44", ETH_ALEN) == 0) |
| return 0; |
| |
| ret = prism2_sta_send_mgmt(local, local->bssid, IEEE80211_STYPE_DEAUTH, |
| (u8 *) &val, 2); |
| memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN); |
| wireless_send_event(local->dev, SIOCGIWAP, &wrqu, NULL); |
| return ret; |
| } |
| |
| |
| struct proc_dir_entry *hostap_proc; |
| |
| static int __init hostap_init(void) |
| { |
| if (init_net.proc_net != NULL) { |
| hostap_proc = proc_mkdir("hostap", init_net.proc_net); |
| if (!hostap_proc) |
| printk(KERN_WARNING "Failed to mkdir " |
| "/proc/net/hostap\n"); |
| } else |
| hostap_proc = NULL; |
| |
| return 0; |
| } |
| |
| |
| static void __exit hostap_exit(void) |
| { |
| if (hostap_proc != NULL) { |
| hostap_proc = NULL; |
| remove_proc_entry("hostap", init_net.proc_net); |
| } |
| } |
| |
| |
| EXPORT_SYMBOL(hostap_set_word); |
| EXPORT_SYMBOL(hostap_set_string); |
| EXPORT_SYMBOL(hostap_get_porttype); |
| EXPORT_SYMBOL(hostap_set_encryption); |
| EXPORT_SYMBOL(hostap_set_antsel); |
| EXPORT_SYMBOL(hostap_set_roaming); |
| EXPORT_SYMBOL(hostap_set_auth_algs); |
| EXPORT_SYMBOL(hostap_dump_rx_header); |
| EXPORT_SYMBOL(hostap_dump_tx_header); |
| EXPORT_SYMBOL(hostap_80211_get_hdrlen); |
| EXPORT_SYMBOL(hostap_get_stats); |
| EXPORT_SYMBOL(hostap_setup_dev); |
| EXPORT_SYMBOL(hostap_set_multicast_list_queue); |
| EXPORT_SYMBOL(hostap_set_hostapd); |
| EXPORT_SYMBOL(hostap_set_hostapd_sta); |
| EXPORT_SYMBOL(hostap_add_interface); |
| EXPORT_SYMBOL(hostap_remove_interface); |
| EXPORT_SYMBOL(prism2_update_comms_qual); |
| |
| module_init(hostap_init); |
| module_exit(hostap_exit); |