| /* zd_mac.c |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| |
| #include <linux/netdevice.h> |
| #include <linux/etherdevice.h> |
| #include <linux/wireless.h> |
| #include <linux/usb.h> |
| #include <linux/jiffies.h> |
| #include <net/ieee80211_radiotap.h> |
| |
| #include "zd_def.h" |
| #include "zd_chip.h" |
| #include "zd_mac.h" |
| #include "zd_ieee80211.h" |
| #include "zd_netdev.h" |
| #include "zd_rf.h" |
| #include "zd_util.h" |
| |
| static void ieee_init(struct ieee80211_device *ieee); |
| static void softmac_init(struct ieee80211softmac_device *sm); |
| static void set_rts_cts_work(struct work_struct *work); |
| static void set_basic_rates_work(struct work_struct *work); |
| |
| static void housekeeping_init(struct zd_mac *mac); |
| static void housekeeping_enable(struct zd_mac *mac); |
| static void housekeeping_disable(struct zd_mac *mac); |
| |
| static void set_multicast_hash_handler(struct work_struct *work); |
| |
| static void do_rx(unsigned long mac_ptr); |
| |
| int zd_mac_init(struct zd_mac *mac, |
| struct net_device *netdev, |
| struct usb_interface *intf) |
| { |
| struct ieee80211_device *ieee = zd_netdev_ieee80211(netdev); |
| |
| memset(mac, 0, sizeof(*mac)); |
| spin_lock_init(&mac->lock); |
| mac->netdev = netdev; |
| INIT_DELAYED_WORK(&mac->set_rts_cts_work, set_rts_cts_work); |
| INIT_DELAYED_WORK(&mac->set_basic_rates_work, set_basic_rates_work); |
| |
| skb_queue_head_init(&mac->rx_queue); |
| tasklet_init(&mac->rx_tasklet, do_rx, (unsigned long)mac); |
| tasklet_disable(&mac->rx_tasklet); |
| |
| ieee_init(ieee); |
| softmac_init(ieee80211_priv(netdev)); |
| zd_chip_init(&mac->chip, netdev, intf); |
| housekeeping_init(mac); |
| INIT_WORK(&mac->set_multicast_hash_work, set_multicast_hash_handler); |
| return 0; |
| } |
| |
| static int reset_channel(struct zd_mac *mac) |
| { |
| int r; |
| unsigned long flags; |
| const struct channel_range *range; |
| |
| spin_lock_irqsave(&mac->lock, flags); |
| range = zd_channel_range(mac->regdomain); |
| if (!range->start) { |
| r = -EINVAL; |
| goto out; |
| } |
| mac->requested_channel = range->start; |
| r = 0; |
| out: |
| spin_unlock_irqrestore(&mac->lock, flags); |
| return r; |
| } |
| |
| int zd_mac_init_hw(struct zd_mac *mac, u8 device_type) |
| { |
| int r; |
| struct zd_chip *chip = &mac->chip; |
| u8 addr[ETH_ALEN]; |
| u8 default_regdomain; |
| |
| r = zd_chip_enable_int(chip); |
| if (r) |
| goto out; |
| r = zd_chip_init_hw(chip, device_type); |
| if (r) |
| goto disable_int; |
| |
| zd_get_e2p_mac_addr(chip, addr); |
| r = zd_write_mac_addr(chip, addr); |
| if (r) |
| goto disable_int; |
| ZD_ASSERT(!irqs_disabled()); |
| spin_lock_irq(&mac->lock); |
| memcpy(mac->netdev->dev_addr, addr, ETH_ALEN); |
| spin_unlock_irq(&mac->lock); |
| |
| r = zd_read_regdomain(chip, &default_regdomain); |
| if (r) |
| goto disable_int; |
| if (!zd_regdomain_supported(default_regdomain)) { |
| dev_dbg_f(zd_mac_dev(mac), |
| "Regulatory Domain %#04x is not supported.\n", |
| default_regdomain); |
| r = -EINVAL; |
| goto disable_int; |
| } |
| spin_lock_irq(&mac->lock); |
| mac->regdomain = mac->default_regdomain = default_regdomain; |
| spin_unlock_irq(&mac->lock); |
| r = reset_channel(mac); |
| if (r) |
| goto disable_int; |
| |
| /* We must inform the device that we are doing encryption/decryption in |
| * software at the moment. */ |
| r = zd_set_encryption_type(chip, ENC_SNIFFER); |
| if (r) |
| goto disable_int; |
| |
| r = zd_geo_init(zd_mac_to_ieee80211(mac), mac->regdomain); |
| if (r) |
| goto disable_int; |
| |
| r = 0; |
| disable_int: |
| zd_chip_disable_int(chip); |
| out: |
| return r; |
| } |
| |
| void zd_mac_clear(struct zd_mac *mac) |
| { |
| flush_workqueue(zd_workqueue); |
| skb_queue_purge(&mac->rx_queue); |
| tasklet_kill(&mac->rx_tasklet); |
| zd_chip_clear(&mac->chip); |
| ZD_ASSERT(!spin_is_locked(&mac->lock)); |
| ZD_MEMCLEAR(mac, sizeof(struct zd_mac)); |
| } |
| |
| static int reset_mode(struct zd_mac *mac) |
| { |
| struct ieee80211_device *ieee = zd_mac_to_ieee80211(mac); |
| struct zd_ioreq32 ioreqs[] = { |
| { CR_RX_FILTER, STA_RX_FILTER }, |
| { CR_SNIFFER_ON, 0U }, |
| }; |
| |
| if (ieee->iw_mode == IW_MODE_MONITOR) { |
| ioreqs[0].value = 0xffffffff; |
| ioreqs[1].value = 0x1; |
| } |
| |
| return zd_iowrite32a(&mac->chip, ioreqs, ARRAY_SIZE(ioreqs)); |
| } |
| |
| int zd_mac_open(struct net_device *netdev) |
| { |
| struct zd_mac *mac = zd_netdev_mac(netdev); |
| struct zd_chip *chip = &mac->chip; |
| int r; |
| |
| tasklet_enable(&mac->rx_tasklet); |
| |
| r = zd_chip_enable_int(chip); |
| if (r < 0) |
| goto out; |
| |
| r = zd_chip_set_basic_rates(chip, CR_RATES_80211B | CR_RATES_80211G); |
| if (r < 0) |
| goto disable_int; |
| r = reset_mode(mac); |
| if (r) |
| goto disable_int; |
| r = zd_chip_switch_radio_on(chip); |
| if (r < 0) |
| goto disable_int; |
| r = zd_chip_set_channel(chip, mac->requested_channel); |
| if (r < 0) |
| goto disable_radio; |
| r = zd_chip_enable_rx(chip); |
| if (r < 0) |
| goto disable_radio; |
| r = zd_chip_enable_hwint(chip); |
| if (r < 0) |
| goto disable_rx; |
| |
| housekeeping_enable(mac); |
| ieee80211softmac_start(netdev); |
| return 0; |
| disable_rx: |
| zd_chip_disable_rx(chip); |
| disable_radio: |
| zd_chip_switch_radio_off(chip); |
| disable_int: |
| zd_chip_disable_int(chip); |
| out: |
| return r; |
| } |
| |
| int zd_mac_stop(struct net_device *netdev) |
| { |
| struct zd_mac *mac = zd_netdev_mac(netdev); |
| struct zd_chip *chip = &mac->chip; |
| |
| netif_stop_queue(netdev); |
| |
| /* |
| * The order here deliberately is a little different from the open() |
| * method, since we need to make sure there is no opportunity for RX |
| * frames to be processed by softmac after we have stopped it. |
| */ |
| |
| zd_chip_disable_rx(chip); |
| skb_queue_purge(&mac->rx_queue); |
| tasklet_disable(&mac->rx_tasklet); |
| housekeeping_disable(mac); |
| ieee80211softmac_stop(netdev); |
| |
| /* Ensure no work items are running or queued from this point */ |
| cancel_delayed_work(&mac->set_rts_cts_work); |
| cancel_delayed_work(&mac->set_basic_rates_work); |
| flush_workqueue(zd_workqueue); |
| mac->updating_rts_rate = 0; |
| mac->updating_basic_rates = 0; |
| |
| zd_chip_disable_hwint(chip); |
| zd_chip_switch_radio_off(chip); |
| zd_chip_disable_int(chip); |
| |
| return 0; |
| } |
| |
| int zd_mac_set_mac_address(struct net_device *netdev, void *p) |
| { |
| int r; |
| unsigned long flags; |
| struct sockaddr *addr = p; |
| struct zd_mac *mac = zd_netdev_mac(netdev); |
| struct zd_chip *chip = &mac->chip; |
| |
| if (!is_valid_ether_addr(addr->sa_data)) |
| return -EADDRNOTAVAIL; |
| |
| dev_dbg_f(zd_mac_dev(mac), |
| "Setting MAC to " MAC_FMT "\n", MAC_ARG(addr->sa_data)); |
| |
| r = zd_write_mac_addr(chip, addr->sa_data); |
| if (r) |
| return r; |
| |
| spin_lock_irqsave(&mac->lock, flags); |
| memcpy(netdev->dev_addr, addr->sa_data, ETH_ALEN); |
| spin_unlock_irqrestore(&mac->lock, flags); |
| |
| return 0; |
| } |
| |
| static void set_multicast_hash_handler(struct work_struct *work) |
| { |
| struct zd_mac *mac = container_of(work, struct zd_mac, |
| set_multicast_hash_work); |
| struct zd_mc_hash hash; |
| |
| spin_lock_irq(&mac->lock); |
| hash = mac->multicast_hash; |
| spin_unlock_irq(&mac->lock); |
| |
| zd_chip_set_multicast_hash(&mac->chip, &hash); |
| } |
| |
| void zd_mac_set_multicast_list(struct net_device *dev) |
| { |
| struct zd_mc_hash hash; |
| struct zd_mac *mac = zd_netdev_mac(dev); |
| struct dev_mc_list *mc; |
| unsigned long flags; |
| |
| if (dev->flags & (IFF_PROMISC|IFF_ALLMULTI)) { |
| zd_mc_add_all(&hash); |
| } else { |
| zd_mc_clear(&hash); |
| for (mc = dev->mc_list; mc; mc = mc->next) { |
| dev_dbg_f(zd_mac_dev(mac), "mc addr " MAC_FMT "\n", |
| MAC_ARG(mc->dmi_addr)); |
| zd_mc_add_addr(&hash, mc->dmi_addr); |
| } |
| } |
| |
| spin_lock_irqsave(&mac->lock, flags); |
| mac->multicast_hash = hash; |
| spin_unlock_irqrestore(&mac->lock, flags); |
| queue_work(zd_workqueue, &mac->set_multicast_hash_work); |
| } |
| |
| int zd_mac_set_regdomain(struct zd_mac *mac, u8 regdomain) |
| { |
| int r; |
| u8 channel; |
| |
| ZD_ASSERT(!irqs_disabled()); |
| spin_lock_irq(&mac->lock); |
| if (regdomain == 0) { |
| regdomain = mac->default_regdomain; |
| } |
| if (!zd_regdomain_supported(regdomain)) { |
| spin_unlock_irq(&mac->lock); |
| return -EINVAL; |
| } |
| mac->regdomain = regdomain; |
| channel = mac->requested_channel; |
| spin_unlock_irq(&mac->lock); |
| |
| r = zd_geo_init(zd_mac_to_ieee80211(mac), regdomain); |
| if (r) |
| return r; |
| if (!zd_regdomain_supports_channel(regdomain, channel)) { |
| r = reset_channel(mac); |
| if (r) |
| return r; |
| } |
| |
| return 0; |
| } |
| |
| u8 zd_mac_get_regdomain(struct zd_mac *mac) |
| { |
| unsigned long flags; |
| u8 regdomain; |
| |
| spin_lock_irqsave(&mac->lock, flags); |
| regdomain = mac->regdomain; |
| spin_unlock_irqrestore(&mac->lock, flags); |
| return regdomain; |
| } |
| |
| /* Fallback to lowest rate, if rate is unknown. */ |
| static u8 rate_to_zd_rate(u8 rate) |
| { |
| switch (rate) { |
| case IEEE80211_CCK_RATE_2MB: |
| return ZD_CCK_RATE_2M; |
| case IEEE80211_CCK_RATE_5MB: |
| return ZD_CCK_RATE_5_5M; |
| case IEEE80211_CCK_RATE_11MB: |
| return ZD_CCK_RATE_11M; |
| case IEEE80211_OFDM_RATE_6MB: |
| return ZD_OFDM_RATE_6M; |
| case IEEE80211_OFDM_RATE_9MB: |
| return ZD_OFDM_RATE_9M; |
| case IEEE80211_OFDM_RATE_12MB: |
| return ZD_OFDM_RATE_12M; |
| case IEEE80211_OFDM_RATE_18MB: |
| return ZD_OFDM_RATE_18M; |
| case IEEE80211_OFDM_RATE_24MB: |
| return ZD_OFDM_RATE_24M; |
| case IEEE80211_OFDM_RATE_36MB: |
| return ZD_OFDM_RATE_36M; |
| case IEEE80211_OFDM_RATE_48MB: |
| return ZD_OFDM_RATE_48M; |
| case IEEE80211_OFDM_RATE_54MB: |
| return ZD_OFDM_RATE_54M; |
| } |
| return ZD_CCK_RATE_1M; |
| } |
| |
| static u16 rate_to_cr_rate(u8 rate) |
| { |
| switch (rate) { |
| case IEEE80211_CCK_RATE_2MB: |
| return CR_RATE_1M; |
| case IEEE80211_CCK_RATE_5MB: |
| return CR_RATE_5_5M; |
| case IEEE80211_CCK_RATE_11MB: |
| return CR_RATE_11M; |
| case IEEE80211_OFDM_RATE_6MB: |
| return CR_RATE_6M; |
| case IEEE80211_OFDM_RATE_9MB: |
| return CR_RATE_9M; |
| case IEEE80211_OFDM_RATE_12MB: |
| return CR_RATE_12M; |
| case IEEE80211_OFDM_RATE_18MB: |
| return CR_RATE_18M; |
| case IEEE80211_OFDM_RATE_24MB: |
| return CR_RATE_24M; |
| case IEEE80211_OFDM_RATE_36MB: |
| return CR_RATE_36M; |
| case IEEE80211_OFDM_RATE_48MB: |
| return CR_RATE_48M; |
| case IEEE80211_OFDM_RATE_54MB: |
| return CR_RATE_54M; |
| } |
| return CR_RATE_1M; |
| } |
| |
| static void try_enable_tx(struct zd_mac *mac) |
| { |
| unsigned long flags; |
| |
| spin_lock_irqsave(&mac->lock, flags); |
| if (mac->updating_rts_rate == 0 && mac->updating_basic_rates == 0) |
| netif_wake_queue(mac->netdev); |
| spin_unlock_irqrestore(&mac->lock, flags); |
| } |
| |
| static void set_rts_cts_work(struct work_struct *work) |
| { |
| struct zd_mac *mac = |
| container_of(work, struct zd_mac, set_rts_cts_work.work); |
| unsigned long flags; |
| u8 rts_rate; |
| unsigned int short_preamble; |
| |
| mutex_lock(&mac->chip.mutex); |
| |
| spin_lock_irqsave(&mac->lock, flags); |
| mac->updating_rts_rate = 0; |
| rts_rate = mac->rts_rate; |
| short_preamble = mac->short_preamble; |
| spin_unlock_irqrestore(&mac->lock, flags); |
| |
| zd_chip_set_rts_cts_rate_locked(&mac->chip, rts_rate, short_preamble); |
| mutex_unlock(&mac->chip.mutex); |
| |
| try_enable_tx(mac); |
| } |
| |
| static void set_basic_rates_work(struct work_struct *work) |
| { |
| struct zd_mac *mac = |
| container_of(work, struct zd_mac, set_basic_rates_work.work); |
| unsigned long flags; |
| u16 basic_rates; |
| |
| mutex_lock(&mac->chip.mutex); |
| |
| spin_lock_irqsave(&mac->lock, flags); |
| mac->updating_basic_rates = 0; |
| basic_rates = mac->basic_rates; |
| spin_unlock_irqrestore(&mac->lock, flags); |
| |
| zd_chip_set_basic_rates_locked(&mac->chip, basic_rates); |
| mutex_unlock(&mac->chip.mutex); |
| |
| try_enable_tx(mac); |
| } |
| |
| static void bssinfo_change(struct net_device *netdev, u32 changes) |
| { |
| struct zd_mac *mac = zd_netdev_mac(netdev); |
| struct ieee80211softmac_device *softmac = ieee80211_priv(netdev); |
| struct ieee80211softmac_bss_info *bssinfo = &softmac->bssinfo; |
| int need_set_rts_cts = 0; |
| int need_set_rates = 0; |
| u16 basic_rates; |
| unsigned long flags; |
| |
| dev_dbg_f(zd_mac_dev(mac), "changes: %x\n", changes); |
| |
| if (changes & IEEE80211SOFTMAC_BSSINFOCHG_SHORT_PREAMBLE) { |
| spin_lock_irqsave(&mac->lock, flags); |
| mac->short_preamble = bssinfo->short_preamble; |
| spin_unlock_irqrestore(&mac->lock, flags); |
| need_set_rts_cts = 1; |
| } |
| |
| if (changes & IEEE80211SOFTMAC_BSSINFOCHG_RATES) { |
| /* Set RTS rate to highest available basic rate */ |
| u8 hi_rate = ieee80211softmac_highest_supported_rate(softmac, |
| &bssinfo->supported_rates, 1); |
| hi_rate = rate_to_zd_rate(hi_rate); |
| |
| spin_lock_irqsave(&mac->lock, flags); |
| if (hi_rate != mac->rts_rate) { |
| mac->rts_rate = hi_rate; |
| need_set_rts_cts = 1; |
| } |
| spin_unlock_irqrestore(&mac->lock, flags); |
| |
| /* Set basic rates */ |
| need_set_rates = 1; |
| if (bssinfo->supported_rates.count == 0) { |
| /* Allow the device to be flexible */ |
| basic_rates = CR_RATES_80211B | CR_RATES_80211G; |
| } else { |
| int i = 0; |
| basic_rates = 0; |
| |
| for (i = 0; i < bssinfo->supported_rates.count; i++) { |
| u16 rate = bssinfo->supported_rates.rates[i]; |
| if ((rate & IEEE80211_BASIC_RATE_MASK) == 0) |
| continue; |
| |
| rate &= ~IEEE80211_BASIC_RATE_MASK; |
| basic_rates |= rate_to_cr_rate(rate); |
| } |
| } |
| spin_lock_irqsave(&mac->lock, flags); |
| mac->basic_rates = basic_rates; |
| spin_unlock_irqrestore(&mac->lock, flags); |
| } |
| |
| /* Schedule any changes we made above */ |
| |
| spin_lock_irqsave(&mac->lock, flags); |
| if (need_set_rts_cts && !mac->updating_rts_rate) { |
| mac->updating_rts_rate = 1; |
| netif_stop_queue(mac->netdev); |
| queue_delayed_work(zd_workqueue, &mac->set_rts_cts_work, 0); |
| } |
| if (need_set_rates && !mac->updating_basic_rates) { |
| mac->updating_basic_rates = 1; |
| netif_stop_queue(mac->netdev); |
| queue_delayed_work(zd_workqueue, &mac->set_basic_rates_work, |
| 0); |
| } |
| spin_unlock_irqrestore(&mac->lock, flags); |
| } |
| |
| static void set_channel(struct net_device *netdev, u8 channel) |
| { |
| struct zd_mac *mac = zd_netdev_mac(netdev); |
| |
| dev_dbg_f(zd_mac_dev(mac), "channel %d\n", channel); |
| |
| zd_chip_set_channel(&mac->chip, channel); |
| } |
| |
| int zd_mac_request_channel(struct zd_mac *mac, u8 channel) |
| { |
| unsigned long lock_flags; |
| struct ieee80211_device *ieee = zd_mac_to_ieee80211(mac); |
| |
| if (ieee->iw_mode == IW_MODE_INFRA) |
| return -EPERM; |
| |
| spin_lock_irqsave(&mac->lock, lock_flags); |
| if (!zd_regdomain_supports_channel(mac->regdomain, channel)) { |
| spin_unlock_irqrestore(&mac->lock, lock_flags); |
| return -EINVAL; |
| } |
| mac->requested_channel = channel; |
| spin_unlock_irqrestore(&mac->lock, lock_flags); |
| if (netif_running(mac->netdev)) |
| return zd_chip_set_channel(&mac->chip, channel); |
| else |
| return 0; |
| } |
| |
| u8 zd_mac_get_channel(struct zd_mac *mac) |
| { |
| u8 channel = zd_chip_get_channel(&mac->chip); |
| |
| dev_dbg_f(zd_mac_dev(mac), "channel %u\n", channel); |
| return channel; |
| } |
| |
| /* If wrong rate is given, we are falling back to the slowest rate: 1MBit/s */ |
| static u8 zd_rate_typed(u8 zd_rate) |
| { |
| static const u8 typed_rates[16] = { |
| [ZD_CCK_RATE_1M] = ZD_CS_CCK|ZD_CCK_RATE_1M, |
| [ZD_CCK_RATE_2M] = ZD_CS_CCK|ZD_CCK_RATE_2M, |
| [ZD_CCK_RATE_5_5M] = ZD_CS_CCK|ZD_CCK_RATE_5_5M, |
| [ZD_CCK_RATE_11M] = ZD_CS_CCK|ZD_CCK_RATE_11M, |
| [ZD_OFDM_RATE_6M] = ZD_CS_OFDM|ZD_OFDM_RATE_6M, |
| [ZD_OFDM_RATE_9M] = ZD_CS_OFDM|ZD_OFDM_RATE_9M, |
| [ZD_OFDM_RATE_12M] = ZD_CS_OFDM|ZD_OFDM_RATE_12M, |
| [ZD_OFDM_RATE_18M] = ZD_CS_OFDM|ZD_OFDM_RATE_18M, |
| [ZD_OFDM_RATE_24M] = ZD_CS_OFDM|ZD_OFDM_RATE_24M, |
| [ZD_OFDM_RATE_36M] = ZD_CS_OFDM|ZD_OFDM_RATE_36M, |
| [ZD_OFDM_RATE_48M] = ZD_CS_OFDM|ZD_OFDM_RATE_48M, |
| [ZD_OFDM_RATE_54M] = ZD_CS_OFDM|ZD_OFDM_RATE_54M, |
| }; |
| |
| ZD_ASSERT(ZD_CS_RATE_MASK == 0x0f); |
| return typed_rates[zd_rate & ZD_CS_RATE_MASK]; |
| } |
| |
| int zd_mac_set_mode(struct zd_mac *mac, u32 mode) |
| { |
| struct ieee80211_device *ieee; |
| |
| switch (mode) { |
| case IW_MODE_AUTO: |
| case IW_MODE_ADHOC: |
| case IW_MODE_INFRA: |
| mac->netdev->type = ARPHRD_ETHER; |
| break; |
| case IW_MODE_MONITOR: |
| mac->netdev->type = ARPHRD_IEEE80211_RADIOTAP; |
| break; |
| default: |
| dev_dbg_f(zd_mac_dev(mac), "wrong mode %u\n", mode); |
| return -EINVAL; |
| } |
| |
| ieee = zd_mac_to_ieee80211(mac); |
| ZD_ASSERT(!irqs_disabled()); |
| spin_lock_irq(&ieee->lock); |
| ieee->iw_mode = mode; |
| spin_unlock_irq(&ieee->lock); |
| |
| if (netif_running(mac->netdev)) |
| return reset_mode(mac); |
| |
| return 0; |
| } |
| |
| int zd_mac_get_mode(struct zd_mac *mac, u32 *mode) |
| { |
| unsigned long flags; |
| struct ieee80211_device *ieee; |
| |
| ieee = zd_mac_to_ieee80211(mac); |
| spin_lock_irqsave(&ieee->lock, flags); |
| *mode = ieee->iw_mode; |
| spin_unlock_irqrestore(&ieee->lock, flags); |
| return 0; |
| } |
| |
| int zd_mac_get_range(struct zd_mac *mac, struct iw_range *range) |
| { |
| int i; |
| const struct channel_range *channel_range; |
| u8 regdomain; |
| |
| memset(range, 0, sizeof(*range)); |
| |
| /* FIXME: Not so important and depends on the mode. For 802.11g |
| * usually this value is used. It seems to be that Bit/s number is |
| * given here. |
| */ |
| range->throughput = 27 * 1000 * 1000; |
| |
| range->max_qual.qual = 100; |
| range->max_qual.level = 100; |
| |
| /* FIXME: Needs still to be tuned. */ |
| range->avg_qual.qual = 71; |
| range->avg_qual.level = 80; |
| |
| /* FIXME: depends on standard? */ |
| range->min_rts = 256; |
| range->max_rts = 2346; |
| |
| range->min_frag = MIN_FRAG_THRESHOLD; |
| range->max_frag = MAX_FRAG_THRESHOLD; |
| |
| range->max_encoding_tokens = WEP_KEYS; |
| range->num_encoding_sizes = 2; |
| range->encoding_size[0] = 5; |
| range->encoding_size[1] = WEP_KEY_LEN; |
| |
| range->we_version_compiled = WIRELESS_EXT; |
| range->we_version_source = 20; |
| |
| range->enc_capa = IW_ENC_CAPA_WPA | IW_ENC_CAPA_WPA2 | |
| IW_ENC_CAPA_CIPHER_TKIP | IW_ENC_CAPA_CIPHER_CCMP; |
| |
| ZD_ASSERT(!irqs_disabled()); |
| spin_lock_irq(&mac->lock); |
| regdomain = mac->regdomain; |
| spin_unlock_irq(&mac->lock); |
| channel_range = zd_channel_range(regdomain); |
| |
| range->num_channels = channel_range->end - channel_range->start; |
| range->old_num_channels = range->num_channels; |
| range->num_frequency = range->num_channels; |
| range->old_num_frequency = range->num_frequency; |
| |
| for (i = 0; i < range->num_frequency; i++) { |
| struct iw_freq *freq = &range->freq[i]; |
| freq->i = channel_range->start + i; |
| zd_channel_to_freq(freq, freq->i); |
| } |
| |
| return 0; |
| } |
| |
| static int zd_calc_tx_length_us(u8 *service, u8 zd_rate, u16 tx_length) |
| { |
| static const u8 rate_divisor[] = { |
| [ZD_CCK_RATE_1M] = 1, |
| [ZD_CCK_RATE_2M] = 2, |
| [ZD_CCK_RATE_5_5M] = 11, /* bits must be doubled */ |
| [ZD_CCK_RATE_11M] = 11, |
| [ZD_OFDM_RATE_6M] = 6, |
| [ZD_OFDM_RATE_9M] = 9, |
| [ZD_OFDM_RATE_12M] = 12, |
| [ZD_OFDM_RATE_18M] = 18, |
| [ZD_OFDM_RATE_24M] = 24, |
| [ZD_OFDM_RATE_36M] = 36, |
| [ZD_OFDM_RATE_48M] = 48, |
| [ZD_OFDM_RATE_54M] = 54, |
| }; |
| |
| u32 bits = (u32)tx_length * 8; |
| u32 divisor; |
| |
| divisor = rate_divisor[zd_rate]; |
| if (divisor == 0) |
| return -EINVAL; |
| |
| switch (zd_rate) { |
| case ZD_CCK_RATE_5_5M: |
| bits = (2*bits) + 10; /* round up to the next integer */ |
| break; |
| case ZD_CCK_RATE_11M: |
| if (service) { |
| u32 t = bits % 11; |
| *service &= ~ZD_PLCP_SERVICE_LENGTH_EXTENSION; |
| if (0 < t && t <= 3) { |
| *service |= ZD_PLCP_SERVICE_LENGTH_EXTENSION; |
| } |
| } |
| bits += 10; /* round up to the next integer */ |
| break; |
| } |
| |
| return bits/divisor; |
| } |
| |
| enum { |
| R2M_SHORT_PREAMBLE = 0x01, |
| R2M_11A = 0x02, |
| }; |
| |
| static u8 zd_rate_to_modulation(u8 zd_rate, int flags) |
| { |
| u8 modulation; |
| |
| modulation = zd_rate_typed(zd_rate); |
| if (flags & R2M_SHORT_PREAMBLE) { |
| switch (ZD_CS_RATE(modulation)) { |
| case ZD_CCK_RATE_2M: |
| case ZD_CCK_RATE_5_5M: |
| case ZD_CCK_RATE_11M: |
| modulation |= ZD_CS_CCK_PREA_SHORT; |
| return modulation; |
| } |
| } |
| if (flags & R2M_11A) { |
| if (ZD_CS_TYPE(modulation) == ZD_CS_OFDM) |
| modulation |= ZD_CS_OFDM_MODE_11A; |
| } |
| return modulation; |
| } |
| |
| static void cs_set_modulation(struct zd_mac *mac, struct zd_ctrlset *cs, |
| struct ieee80211_hdr_4addr *hdr) |
| { |
| struct ieee80211softmac_device *softmac = ieee80211_priv(mac->netdev); |
| u16 ftype = WLAN_FC_GET_TYPE(le16_to_cpu(hdr->frame_ctl)); |
| u8 rate, zd_rate; |
| int is_mgt = (ftype == IEEE80211_FTYPE_MGMT) != 0; |
| int is_multicast = is_multicast_ether_addr(hdr->addr1); |
| int short_preamble = ieee80211softmac_short_preamble_ok(softmac, |
| is_multicast, is_mgt); |
| int flags = 0; |
| |
| /* FIXME: 802.11a? */ |
| rate = ieee80211softmac_suggest_txrate(softmac, is_multicast, is_mgt); |
| |
| if (short_preamble) |
| flags |= R2M_SHORT_PREAMBLE; |
| |
| zd_rate = rate_to_zd_rate(rate); |
| cs->modulation = zd_rate_to_modulation(zd_rate, flags); |
| } |
| |
| static void cs_set_control(struct zd_mac *mac, struct zd_ctrlset *cs, |
| struct ieee80211_hdr_4addr *header) |
| { |
| struct ieee80211softmac_device *softmac = ieee80211_priv(mac->netdev); |
| unsigned int tx_length = le16_to_cpu(cs->tx_length); |
| u16 fctl = le16_to_cpu(header->frame_ctl); |
| u16 ftype = WLAN_FC_GET_TYPE(fctl); |
| u16 stype = WLAN_FC_GET_STYPE(fctl); |
| |
| /* |
| * CONTROL TODO: |
| * - if backoff needed, enable bit 0 |
| * - if burst (backoff not needed) disable bit 0 |
| */ |
| |
| cs->control = 0; |
| |
| /* First fragment */ |
| if (WLAN_GET_SEQ_FRAG(le16_to_cpu(header->seq_ctl)) == 0) |
| cs->control |= ZD_CS_NEED_RANDOM_BACKOFF; |
| |
| /* Multicast */ |
| if (is_multicast_ether_addr(header->addr1)) |
| cs->control |= ZD_CS_MULTICAST; |
| |
| /* PS-POLL */ |
| if (stype == IEEE80211_STYPE_PSPOLL) |
| cs->control |= ZD_CS_PS_POLL_FRAME; |
| |
| /* Unicast data frames over the threshold should have RTS */ |
| if (!is_multicast_ether_addr(header->addr1) && |
| ftype != IEEE80211_FTYPE_MGMT && |
| tx_length > zd_netdev_ieee80211(mac->netdev)->rts) |
| cs->control |= ZD_CS_RTS; |
| |
| /* Use CTS-to-self protection if required */ |
| if (ZD_CS_TYPE(cs->modulation) == ZD_CS_OFDM && |
| ieee80211softmac_protection_needed(softmac)) { |
| /* FIXME: avoid sending RTS *and* self-CTS, is that correct? */ |
| cs->control &= ~ZD_CS_RTS; |
| cs->control |= ZD_CS_SELF_CTS; |
| } |
| |
| /* FIXME: Management frame? */ |
| } |
| |
| static int fill_ctrlset(struct zd_mac *mac, |
| struct ieee80211_txb *txb, |
| int frag_num) |
| { |
| int r; |
| struct sk_buff *skb = txb->fragments[frag_num]; |
| struct ieee80211_hdr_4addr *hdr = |
| (struct ieee80211_hdr_4addr *) skb->data; |
| unsigned int frag_len = skb->len + IEEE80211_FCS_LEN; |
| unsigned int next_frag_len; |
| unsigned int packet_length; |
| struct zd_ctrlset *cs = (struct zd_ctrlset *) |
| skb_push(skb, sizeof(struct zd_ctrlset)); |
| |
| if (frag_num+1 < txb->nr_frags) { |
| next_frag_len = txb->fragments[frag_num+1]->len + |
| IEEE80211_FCS_LEN; |
| } else { |
| next_frag_len = 0; |
| } |
| ZD_ASSERT(frag_len <= 0xffff); |
| ZD_ASSERT(next_frag_len <= 0xffff); |
| |
| cs_set_modulation(mac, cs, hdr); |
| |
| cs->tx_length = cpu_to_le16(frag_len); |
| |
| cs_set_control(mac, cs, hdr); |
| |
| packet_length = frag_len + sizeof(struct zd_ctrlset) + 10; |
| ZD_ASSERT(packet_length <= 0xffff); |
| /* ZD1211B: Computing the length difference this way, gives us |
| * flexibility to compute the packet length. |
| */ |
| cs->packet_length = cpu_to_le16(mac->chip.is_zd1211b ? |
| packet_length - frag_len : packet_length); |
| |
| /* |
| * CURRENT LENGTH: |
| * - transmit frame length in microseconds |
| * - seems to be derived from frame length |
| * - see Cal_Us_Service() in zdinlinef.h |
| * - if macp->bTxBurstEnable is enabled, then multiply by 4 |
| * - bTxBurstEnable is never set in the vendor driver |
| * |
| * SERVICE: |
| * - "for PLCP configuration" |
| * - always 0 except in some situations at 802.11b 11M |
| * - see line 53 of zdinlinef.h |
| */ |
| cs->service = 0; |
| r = zd_calc_tx_length_us(&cs->service, ZD_CS_RATE(cs->modulation), |
| le16_to_cpu(cs->tx_length)); |
| if (r < 0) |
| return r; |
| cs->current_length = cpu_to_le16(r); |
| |
| if (next_frag_len == 0) { |
| cs->next_frame_length = 0; |
| } else { |
| r = zd_calc_tx_length_us(NULL, ZD_CS_RATE(cs->modulation), |
| next_frag_len); |
| if (r < 0) |
| return r; |
| cs->next_frame_length = cpu_to_le16(r); |
| } |
| |
| return 0; |
| } |
| |
| static int zd_mac_tx(struct zd_mac *mac, struct ieee80211_txb *txb, int pri) |
| { |
| int i, r; |
| struct ieee80211_device *ieee = zd_mac_to_ieee80211(mac); |
| |
| for (i = 0; i < txb->nr_frags; i++) { |
| struct sk_buff *skb = txb->fragments[i]; |
| |
| r = fill_ctrlset(mac, txb, i); |
| if (r) { |
| ieee->stats.tx_dropped++; |
| return r; |
| } |
| r = zd_usb_tx(&mac->chip.usb, skb->data, skb->len); |
| if (r) { |
| ieee->stats.tx_dropped++; |
| return r; |
| } |
| } |
| |
| /* FIXME: shouldn't this be handled by the upper layers? */ |
| mac->netdev->trans_start = jiffies; |
| |
| ieee80211_txb_free(txb); |
| return 0; |
| } |
| |
| struct zd_rt_hdr { |
| struct ieee80211_radiotap_header rt_hdr; |
| u8 rt_flags; |
| u8 rt_rate; |
| u16 rt_channel; |
| u16 rt_chbitmask; |
| } __attribute__((packed)); |
| |
| static void fill_rt_header(void *buffer, struct zd_mac *mac, |
| const struct ieee80211_rx_stats *stats, |
| const struct rx_status *status) |
| { |
| struct zd_rt_hdr *hdr = buffer; |
| |
| hdr->rt_hdr.it_version = PKTHDR_RADIOTAP_VERSION; |
| hdr->rt_hdr.it_pad = 0; |
| hdr->rt_hdr.it_len = cpu_to_le16(sizeof(struct zd_rt_hdr)); |
| hdr->rt_hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) | |
| (1 << IEEE80211_RADIOTAP_CHANNEL) | |
| (1 << IEEE80211_RADIOTAP_RATE)); |
| |
| hdr->rt_flags = 0; |
| if (status->decryption_type & (ZD_RX_WEP64|ZD_RX_WEP128|ZD_RX_WEP256)) |
| hdr->rt_flags |= IEEE80211_RADIOTAP_F_WEP; |
| |
| hdr->rt_rate = stats->rate / 5; |
| |
| /* FIXME: 802.11a */ |
| hdr->rt_channel = cpu_to_le16(ieee80211chan2mhz( |
| _zd_chip_get_channel(&mac->chip))); |
| hdr->rt_chbitmask = cpu_to_le16(IEEE80211_CHAN_2GHZ | |
| ((status->frame_status & ZD_RX_FRAME_MODULATION_MASK) == |
| ZD_RX_OFDM ? IEEE80211_CHAN_OFDM : IEEE80211_CHAN_CCK)); |
| } |
| |
| /* Returns 1 if the data packet is for us and 0 otherwise. */ |
| static int is_data_packet_for_us(struct ieee80211_device *ieee, |
| struct ieee80211_hdr_4addr *hdr) |
| { |
| struct net_device *netdev = ieee->dev; |
| u16 fc = le16_to_cpu(hdr->frame_ctl); |
| |
| ZD_ASSERT(WLAN_FC_GET_TYPE(fc) == IEEE80211_FTYPE_DATA); |
| |
| switch (ieee->iw_mode) { |
| case IW_MODE_ADHOC: |
| if ((fc & (IEEE80211_FCTL_TODS|IEEE80211_FCTL_FROMDS)) != 0 || |
| memcmp(hdr->addr3, ieee->bssid, ETH_ALEN) != 0) |
| return 0; |
| break; |
| case IW_MODE_AUTO: |
| case IW_MODE_INFRA: |
| if ((fc & (IEEE80211_FCTL_TODS|IEEE80211_FCTL_FROMDS)) != |
| IEEE80211_FCTL_FROMDS || |
| memcmp(hdr->addr2, ieee->bssid, ETH_ALEN) != 0) |
| return 0; |
| break; |
| default: |
| ZD_ASSERT(ieee->iw_mode != IW_MODE_MONITOR); |
| return 0; |
| } |
| |
| return memcmp(hdr->addr1, netdev->dev_addr, ETH_ALEN) == 0 || |
| (is_multicast_ether_addr(hdr->addr1) && |
| memcmp(hdr->addr3, netdev->dev_addr, ETH_ALEN) != 0) || |
| (netdev->flags & IFF_PROMISC); |
| } |
| |
| /* Filters received packets. The function returns 1 if the packet should be |
| * forwarded to ieee80211_rx(). If the packet should be ignored the function |
| * returns 0. If an invalid packet is found the function returns -EINVAL. |
| * |
| * The function calls ieee80211_rx_mgt() directly. |
| * |
| * It has been based on ieee80211_rx_any. |
| */ |
| static int filter_rx(struct ieee80211_device *ieee, |
| const u8 *buffer, unsigned int length, |
| struct ieee80211_rx_stats *stats) |
| { |
| struct ieee80211_hdr_4addr *hdr; |
| u16 fc; |
| |
| if (ieee->iw_mode == IW_MODE_MONITOR) |
| return 1; |
| |
| hdr = (struct ieee80211_hdr_4addr *)buffer; |
| fc = le16_to_cpu(hdr->frame_ctl); |
| if ((fc & IEEE80211_FCTL_VERS) != 0) |
| return -EINVAL; |
| |
| switch (WLAN_FC_GET_TYPE(fc)) { |
| case IEEE80211_FTYPE_MGMT: |
| if (length < sizeof(struct ieee80211_hdr_3addr)) |
| return -EINVAL; |
| ieee80211_rx_mgt(ieee, hdr, stats); |
| return 0; |
| case IEEE80211_FTYPE_CTL: |
| return 0; |
| case IEEE80211_FTYPE_DATA: |
| /* Ignore invalid short buffers */ |
| if (length < sizeof(struct ieee80211_hdr_3addr)) |
| return -EINVAL; |
| return is_data_packet_for_us(ieee, hdr); |
| } |
| |
| return -EINVAL; |
| } |
| |
| static void update_qual_rssi(struct zd_mac *mac, |
| const u8 *buffer, unsigned int length, |
| u8 qual_percent, u8 rssi_percent) |
| { |
| unsigned long flags; |
| struct ieee80211_hdr_3addr *hdr; |
| int i; |
| |
| hdr = (struct ieee80211_hdr_3addr *)buffer; |
| if (length < offsetof(struct ieee80211_hdr_3addr, addr3)) |
| return; |
| if (memcmp(hdr->addr2, zd_mac_to_ieee80211(mac)->bssid, ETH_ALEN) != 0) |
| return; |
| |
| spin_lock_irqsave(&mac->lock, flags); |
| i = mac->stats_count % ZD_MAC_STATS_BUFFER_SIZE; |
| mac->qual_buffer[i] = qual_percent; |
| mac->rssi_buffer[i] = rssi_percent; |
| mac->stats_count++; |
| spin_unlock_irqrestore(&mac->lock, flags); |
| } |
| |
| static int fill_rx_stats(struct ieee80211_rx_stats *stats, |
| const struct rx_status **pstatus, |
| struct zd_mac *mac, |
| const u8 *buffer, unsigned int length) |
| { |
| const struct rx_status *status; |
| |
| *pstatus = status = zd_tail(buffer, length, sizeof(struct rx_status)); |
| if (status->frame_status & ZD_RX_ERROR) { |
| struct ieee80211_device *ieee = zd_mac_to_ieee80211(mac); |
| ieee->stats.rx_errors++; |
| if (status->frame_status & ZD_RX_TIMEOUT_ERROR) |
| ieee->stats.rx_missed_errors++; |
| else if (status->frame_status & ZD_RX_FIFO_OVERRUN_ERROR) |
| ieee->stats.rx_fifo_errors++; |
| else if (status->frame_status & ZD_RX_DECRYPTION_ERROR) |
| ieee->ieee_stats.rx_discards_undecryptable++; |
| else if (status->frame_status & ZD_RX_CRC32_ERROR) { |
| ieee->stats.rx_crc_errors++; |
| ieee->ieee_stats.rx_fcs_errors++; |
| } |
| else if (status->frame_status & ZD_RX_CRC16_ERROR) |
| ieee->stats.rx_crc_errors++; |
| return -EINVAL; |
| } |
| |
| memset(stats, 0, sizeof(struct ieee80211_rx_stats)); |
| stats->len = length - (ZD_PLCP_HEADER_SIZE + IEEE80211_FCS_LEN + |
| + sizeof(struct rx_status)); |
| /* FIXME: 802.11a */ |
| stats->freq = IEEE80211_24GHZ_BAND; |
| stats->received_channel = _zd_chip_get_channel(&mac->chip); |
| stats->rssi = zd_rx_strength_percent(status->signal_strength); |
| stats->signal = zd_rx_qual_percent(buffer, |
| length - sizeof(struct rx_status), |
| status); |
| stats->mask = IEEE80211_STATMASK_RSSI | IEEE80211_STATMASK_SIGNAL; |
| stats->rate = zd_rx_rate(buffer, status); |
| if (stats->rate) |
| stats->mask |= IEEE80211_STATMASK_RATE; |
| |
| return 0; |
| } |
| |
| static void zd_mac_rx(struct zd_mac *mac, struct sk_buff *skb) |
| { |
| int r; |
| struct ieee80211_device *ieee = zd_mac_to_ieee80211(mac); |
| struct ieee80211_rx_stats stats; |
| const struct rx_status *status; |
| |
| if (skb->len < ZD_PLCP_HEADER_SIZE + IEEE80211_1ADDR_LEN + |
| IEEE80211_FCS_LEN + sizeof(struct rx_status)) |
| { |
| ieee->stats.rx_errors++; |
| ieee->stats.rx_length_errors++; |
| dev_dbg_f(zd_mac_dev(mac), "Packet with length %u to small.\n", |
| skb->len); |
| goto free_skb; |
| } |
| |
| r = fill_rx_stats(&stats, &status, mac, skb->data, skb->len); |
| if (r) { |
| /* Only packets with rx errors are included here. |
| * The error stats have already been set in fill_rx_stats. |
| */ |
| goto free_skb; |
| } |
| |
| __skb_pull(skb, ZD_PLCP_HEADER_SIZE); |
| __skb_trim(skb, skb->len - |
| (IEEE80211_FCS_LEN + sizeof(struct rx_status))); |
| |
| update_qual_rssi(mac, skb->data, skb->len, stats.signal, |
| status->signal_strength); |
| |
| r = filter_rx(ieee, skb->data, skb->len, &stats); |
| if (r <= 0) { |
| if (r < 0) { |
| ieee->stats.rx_errors++; |
| dev_dbg_f(zd_mac_dev(mac), "Error in packet.\n"); |
| } |
| goto free_skb; |
| } |
| |
| if (ieee->iw_mode == IW_MODE_MONITOR) |
| fill_rt_header(skb_push(skb, sizeof(struct zd_rt_hdr)), mac, |
| &stats, status); |
| |
| r = ieee80211_rx(ieee, skb, &stats); |
| if (r) |
| return; |
| free_skb: |
| /* We are always in a soft irq. */ |
| dev_kfree_skb(skb); |
| } |
| |
| static void do_rx(unsigned long mac_ptr) |
| { |
| struct zd_mac *mac = (struct zd_mac *)mac_ptr; |
| struct sk_buff *skb; |
| |
| while ((skb = skb_dequeue(&mac->rx_queue)) != NULL) |
| zd_mac_rx(mac, skb); |
| } |
| |
| int zd_mac_rx_irq(struct zd_mac *mac, const u8 *buffer, unsigned int length) |
| { |
| struct sk_buff *skb; |
| |
| skb = dev_alloc_skb(sizeof(struct zd_rt_hdr) + length); |
| if (!skb) { |
| struct ieee80211_device *ieee = zd_mac_to_ieee80211(mac); |
| dev_warn(zd_mac_dev(mac), "Could not allocate skb.\n"); |
| ieee->stats.rx_dropped++; |
| return -ENOMEM; |
| } |
| skb_reserve(skb, sizeof(struct zd_rt_hdr)); |
| memcpy(__skb_put(skb, length), buffer, length); |
| skb_queue_tail(&mac->rx_queue, skb); |
| tasklet_schedule(&mac->rx_tasklet); |
| return 0; |
| } |
| |
| static int netdev_tx(struct ieee80211_txb *txb, struct net_device *netdev, |
| int pri) |
| { |
| return zd_mac_tx(zd_netdev_mac(netdev), txb, pri); |
| } |
| |
| static void set_security(struct net_device *netdev, |
| struct ieee80211_security *sec) |
| { |
| struct ieee80211_device *ieee = zd_netdev_ieee80211(netdev); |
| struct ieee80211_security *secinfo = &ieee->sec; |
| int keyidx; |
| |
| dev_dbg_f(zd_mac_dev(zd_netdev_mac(netdev)), "\n"); |
| |
| for (keyidx = 0; keyidx<WEP_KEYS; keyidx++) |
| if (sec->flags & (1<<keyidx)) { |
| secinfo->encode_alg[keyidx] = sec->encode_alg[keyidx]; |
| secinfo->key_sizes[keyidx] = sec->key_sizes[keyidx]; |
| memcpy(secinfo->keys[keyidx], sec->keys[keyidx], |
| SCM_KEY_LEN); |
| } |
| |
| if (sec->flags & SEC_ACTIVE_KEY) { |
| secinfo->active_key = sec->active_key; |
| dev_dbg_f(zd_mac_dev(zd_netdev_mac(netdev)), |
| " .active_key = %d\n", sec->active_key); |
| } |
| if (sec->flags & SEC_UNICAST_GROUP) { |
| secinfo->unicast_uses_group = sec->unicast_uses_group; |
| dev_dbg_f(zd_mac_dev(zd_netdev_mac(netdev)), |
| " .unicast_uses_group = %d\n", |
| sec->unicast_uses_group); |
| } |
| if (sec->flags & SEC_LEVEL) { |
| secinfo->level = sec->level; |
| dev_dbg_f(zd_mac_dev(zd_netdev_mac(netdev)), |
| " .level = %d\n", sec->level); |
| } |
| if (sec->flags & SEC_ENABLED) { |
| secinfo->enabled = sec->enabled; |
| dev_dbg_f(zd_mac_dev(zd_netdev_mac(netdev)), |
| " .enabled = %d\n", sec->enabled); |
| } |
| if (sec->flags & SEC_ENCRYPT) { |
| secinfo->encrypt = sec->encrypt; |
| dev_dbg_f(zd_mac_dev(zd_netdev_mac(netdev)), |
| " .encrypt = %d\n", sec->encrypt); |
| } |
| if (sec->flags & SEC_AUTH_MODE) { |
| secinfo->auth_mode = sec->auth_mode; |
| dev_dbg_f(zd_mac_dev(zd_netdev_mac(netdev)), |
| " .auth_mode = %d\n", sec->auth_mode); |
| } |
| } |
| |
| static void ieee_init(struct ieee80211_device *ieee) |
| { |
| ieee->mode = IEEE_B | IEEE_G; |
| ieee->freq_band = IEEE80211_24GHZ_BAND; |
| ieee->modulation = IEEE80211_OFDM_MODULATION | IEEE80211_CCK_MODULATION; |
| ieee->tx_headroom = sizeof(struct zd_ctrlset); |
| ieee->set_security = set_security; |
| ieee->hard_start_xmit = netdev_tx; |
| |
| /* Software encryption/decryption for now */ |
| ieee->host_build_iv = 0; |
| ieee->host_encrypt = 1; |
| ieee->host_decrypt = 1; |
| |
| /* FIXME: default to managed mode, until ieee80211 and zd1211rw can |
| * correctly support AUTO */ |
| ieee->iw_mode = IW_MODE_INFRA; |
| } |
| |
| static void softmac_init(struct ieee80211softmac_device *sm) |
| { |
| sm->set_channel = set_channel; |
| sm->bssinfo_change = bssinfo_change; |
| } |
| |
| struct iw_statistics *zd_mac_get_wireless_stats(struct net_device *ndev) |
| { |
| struct zd_mac *mac = zd_netdev_mac(ndev); |
| struct iw_statistics *iw_stats = &mac->iw_stats; |
| unsigned int i, count, qual_total, rssi_total; |
| |
| memset(iw_stats, 0, sizeof(struct iw_statistics)); |
| /* We are not setting the status, because ieee->state is not updated |
| * at all and this driver doesn't track authentication state. |
| */ |
| spin_lock_irq(&mac->lock); |
| count = mac->stats_count < ZD_MAC_STATS_BUFFER_SIZE ? |
| mac->stats_count : ZD_MAC_STATS_BUFFER_SIZE; |
| qual_total = rssi_total = 0; |
| for (i = 0; i < count; i++) { |
| qual_total += mac->qual_buffer[i]; |
| rssi_total += mac->rssi_buffer[i]; |
| } |
| spin_unlock_irq(&mac->lock); |
| iw_stats->qual.updated = IW_QUAL_NOISE_INVALID; |
| if (count > 0) { |
| iw_stats->qual.qual = qual_total / count; |
| iw_stats->qual.level = rssi_total / count; |
| iw_stats->qual.updated |= |
| IW_QUAL_QUAL_UPDATED|IW_QUAL_LEVEL_UPDATED; |
| } else { |
| iw_stats->qual.updated |= |
| IW_QUAL_QUAL_INVALID|IW_QUAL_LEVEL_INVALID; |
| } |
| /* TODO: update counter */ |
| return iw_stats; |
| } |
| |
| #define LINK_LED_WORK_DELAY HZ |
| |
| static void link_led_handler(struct work_struct *work) |
| { |
| struct zd_mac *mac = |
| container_of(work, struct zd_mac, housekeeping.link_led_work.work); |
| struct zd_chip *chip = &mac->chip; |
| struct ieee80211softmac_device *sm = ieee80211_priv(mac->netdev); |
| int is_associated; |
| int r; |
| |
| spin_lock_irq(&mac->lock); |
| is_associated = sm->associnfo.associated != 0; |
| spin_unlock_irq(&mac->lock); |
| |
| r = zd_chip_control_leds(chip, |
| is_associated ? LED_ASSOCIATED : LED_SCANNING); |
| if (r) |
| dev_err(zd_mac_dev(mac), "zd_chip_control_leds error %d\n", r); |
| |
| queue_delayed_work(zd_workqueue, &mac->housekeeping.link_led_work, |
| LINK_LED_WORK_DELAY); |
| } |
| |
| static void housekeeping_init(struct zd_mac *mac) |
| { |
| INIT_DELAYED_WORK(&mac->housekeeping.link_led_work, link_led_handler); |
| } |
| |
| static void housekeeping_enable(struct zd_mac *mac) |
| { |
| dev_dbg_f(zd_mac_dev(mac), "\n"); |
| queue_delayed_work(zd_workqueue, &mac->housekeeping.link_led_work, |
| 0); |
| } |
| |
| static void housekeeping_disable(struct zd_mac *mac) |
| { |
| dev_dbg_f(zd_mac_dev(mac), "\n"); |
| cancel_rearming_delayed_workqueue(zd_workqueue, |
| &mac->housekeeping.link_led_work); |
| zd_chip_control_leds(&mac->chip, LED_OFF); |
| } |