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832855dc5a
Suggested by Maxime Austruy, based on mac80211 changes from Stephen Hemminger Signed-off-by: Daniel Drake <dsd@gentoo.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
1340 lines
35 KiB
C
1340 lines
35 KiB
C
/* zd_mac.c
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/wireless.h>
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#include <linux/usb.h>
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#include <linux/jiffies.h>
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#include <net/ieee80211_radiotap.h>
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#include "zd_def.h"
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#include "zd_chip.h"
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#include "zd_mac.h"
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#include "zd_ieee80211.h"
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#include "zd_netdev.h"
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#include "zd_rf.h"
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#include "zd_util.h"
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static void ieee_init(struct ieee80211_device *ieee);
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static void softmac_init(struct ieee80211softmac_device *sm);
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static void set_rts_cts_work(struct work_struct *work);
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static void set_basic_rates_work(struct work_struct *work);
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static void housekeeping_init(struct zd_mac *mac);
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static void housekeeping_enable(struct zd_mac *mac);
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static void housekeeping_disable(struct zd_mac *mac);
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static void set_multicast_hash_handler(struct work_struct *work);
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static void do_rx(unsigned long mac_ptr);
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int zd_mac_init(struct zd_mac *mac,
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struct net_device *netdev,
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struct usb_interface *intf)
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{
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struct ieee80211_device *ieee = zd_netdev_ieee80211(netdev);
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memset(mac, 0, sizeof(*mac));
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spin_lock_init(&mac->lock);
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mac->netdev = netdev;
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INIT_DELAYED_WORK(&mac->set_rts_cts_work, set_rts_cts_work);
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INIT_DELAYED_WORK(&mac->set_basic_rates_work, set_basic_rates_work);
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skb_queue_head_init(&mac->rx_queue);
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tasklet_init(&mac->rx_tasklet, do_rx, (unsigned long)mac);
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tasklet_disable(&mac->rx_tasklet);
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ieee_init(ieee);
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softmac_init(ieee80211_priv(netdev));
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zd_chip_init(&mac->chip, netdev, intf);
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housekeeping_init(mac);
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INIT_WORK(&mac->set_multicast_hash_work, set_multicast_hash_handler);
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return 0;
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}
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static int reset_channel(struct zd_mac *mac)
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{
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int r;
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unsigned long flags;
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const struct channel_range *range;
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spin_lock_irqsave(&mac->lock, flags);
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range = zd_channel_range(mac->regdomain);
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if (!range->start) {
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r = -EINVAL;
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goto out;
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}
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mac->requested_channel = range->start;
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r = 0;
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out:
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spin_unlock_irqrestore(&mac->lock, flags);
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return r;
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}
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int zd_mac_init_hw(struct zd_mac *mac, u8 device_type)
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{
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int r;
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struct zd_chip *chip = &mac->chip;
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u8 addr[ETH_ALEN];
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u8 default_regdomain;
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r = zd_chip_enable_int(chip);
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if (r)
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goto out;
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r = zd_chip_init_hw(chip, device_type);
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if (r)
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goto disable_int;
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zd_get_e2p_mac_addr(chip, addr);
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r = zd_write_mac_addr(chip, addr);
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if (r)
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goto disable_int;
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ZD_ASSERT(!irqs_disabled());
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spin_lock_irq(&mac->lock);
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memcpy(mac->netdev->dev_addr, addr, ETH_ALEN);
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spin_unlock_irq(&mac->lock);
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r = zd_read_regdomain(chip, &default_regdomain);
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if (r)
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goto disable_int;
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if (!zd_regdomain_supported(default_regdomain)) {
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dev_dbg_f(zd_mac_dev(mac),
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"Regulatory Domain %#04x is not supported.\n",
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default_regdomain);
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r = -EINVAL;
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goto disable_int;
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}
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spin_lock_irq(&mac->lock);
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mac->regdomain = mac->default_regdomain = default_regdomain;
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spin_unlock_irq(&mac->lock);
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r = reset_channel(mac);
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if (r)
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goto disable_int;
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/* We must inform the device that we are doing encryption/decryption in
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* software at the moment. */
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r = zd_set_encryption_type(chip, ENC_SNIFFER);
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if (r)
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goto disable_int;
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r = zd_geo_init(zd_mac_to_ieee80211(mac), mac->regdomain);
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if (r)
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goto disable_int;
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r = 0;
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disable_int:
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zd_chip_disable_int(chip);
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out:
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return r;
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}
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void zd_mac_clear(struct zd_mac *mac)
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{
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flush_workqueue(zd_workqueue);
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skb_queue_purge(&mac->rx_queue);
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tasklet_kill(&mac->rx_tasklet);
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zd_chip_clear(&mac->chip);
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ZD_ASSERT(!spin_is_locked(&mac->lock));
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ZD_MEMCLEAR(mac, sizeof(struct zd_mac));
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}
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static int reset_mode(struct zd_mac *mac)
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{
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struct ieee80211_device *ieee = zd_mac_to_ieee80211(mac);
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struct zd_ioreq32 ioreqs[] = {
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{ CR_RX_FILTER, STA_RX_FILTER },
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{ CR_SNIFFER_ON, 0U },
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};
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if (ieee->iw_mode == IW_MODE_MONITOR) {
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ioreqs[0].value = 0xffffffff;
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ioreqs[1].value = 0x1;
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}
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return zd_iowrite32a(&mac->chip, ioreqs, ARRAY_SIZE(ioreqs));
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}
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int zd_mac_open(struct net_device *netdev)
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{
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struct zd_mac *mac = zd_netdev_mac(netdev);
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struct zd_chip *chip = &mac->chip;
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int r;
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tasklet_enable(&mac->rx_tasklet);
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r = zd_chip_enable_int(chip);
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if (r < 0)
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goto out;
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r = zd_chip_set_basic_rates(chip, CR_RATES_80211B | CR_RATES_80211G);
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if (r < 0)
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goto disable_int;
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r = reset_mode(mac);
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if (r)
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goto disable_int;
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r = zd_chip_switch_radio_on(chip);
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if (r < 0)
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goto disable_int;
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r = zd_chip_set_channel(chip, mac->requested_channel);
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if (r < 0)
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goto disable_radio;
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r = zd_chip_enable_rx(chip);
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if (r < 0)
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goto disable_radio;
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r = zd_chip_enable_hwint(chip);
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if (r < 0)
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goto disable_rx;
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housekeeping_enable(mac);
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ieee80211softmac_start(netdev);
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return 0;
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disable_rx:
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zd_chip_disable_rx(chip);
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disable_radio:
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zd_chip_switch_radio_off(chip);
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disable_int:
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zd_chip_disable_int(chip);
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out:
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return r;
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}
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int zd_mac_stop(struct net_device *netdev)
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{
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struct zd_mac *mac = zd_netdev_mac(netdev);
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struct zd_chip *chip = &mac->chip;
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netif_stop_queue(netdev);
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/*
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* The order here deliberately is a little different from the open()
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* method, since we need to make sure there is no opportunity for RX
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* frames to be processed by softmac after we have stopped it.
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*/
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zd_chip_disable_rx(chip);
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skb_queue_purge(&mac->rx_queue);
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tasklet_disable(&mac->rx_tasklet);
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housekeeping_disable(mac);
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ieee80211softmac_stop(netdev);
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/* Ensure no work items are running or queued from this point */
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cancel_delayed_work(&mac->set_rts_cts_work);
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cancel_delayed_work(&mac->set_basic_rates_work);
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flush_workqueue(zd_workqueue);
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mac->updating_rts_rate = 0;
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mac->updating_basic_rates = 0;
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zd_chip_disable_hwint(chip);
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zd_chip_switch_radio_off(chip);
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zd_chip_disable_int(chip);
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return 0;
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}
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int zd_mac_set_mac_address(struct net_device *netdev, void *p)
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{
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int r;
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unsigned long flags;
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struct sockaddr *addr = p;
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struct zd_mac *mac = zd_netdev_mac(netdev);
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struct zd_chip *chip = &mac->chip;
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if (!is_valid_ether_addr(addr->sa_data))
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return -EADDRNOTAVAIL;
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dev_dbg_f(zd_mac_dev(mac),
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"Setting MAC to " MAC_FMT "\n", MAC_ARG(addr->sa_data));
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r = zd_write_mac_addr(chip, addr->sa_data);
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if (r)
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return r;
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spin_lock_irqsave(&mac->lock, flags);
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memcpy(netdev->dev_addr, addr->sa_data, ETH_ALEN);
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spin_unlock_irqrestore(&mac->lock, flags);
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return 0;
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}
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static void set_multicast_hash_handler(struct work_struct *work)
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{
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struct zd_mac *mac = container_of(work, struct zd_mac,
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set_multicast_hash_work);
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struct zd_mc_hash hash;
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spin_lock_irq(&mac->lock);
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hash = mac->multicast_hash;
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spin_unlock_irq(&mac->lock);
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zd_chip_set_multicast_hash(&mac->chip, &hash);
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}
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void zd_mac_set_multicast_list(struct net_device *dev)
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{
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struct zd_mc_hash hash;
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struct zd_mac *mac = zd_netdev_mac(dev);
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struct dev_mc_list *mc;
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unsigned long flags;
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if (dev->flags & (IFF_PROMISC|IFF_ALLMULTI)) {
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zd_mc_add_all(&hash);
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} else {
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zd_mc_clear(&hash);
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for (mc = dev->mc_list; mc; mc = mc->next) {
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dev_dbg_f(zd_mac_dev(mac), "mc addr " MAC_FMT "\n",
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MAC_ARG(mc->dmi_addr));
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zd_mc_add_addr(&hash, mc->dmi_addr);
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}
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}
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spin_lock_irqsave(&mac->lock, flags);
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mac->multicast_hash = hash;
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spin_unlock_irqrestore(&mac->lock, flags);
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queue_work(zd_workqueue, &mac->set_multicast_hash_work);
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}
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int zd_mac_set_regdomain(struct zd_mac *mac, u8 regdomain)
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{
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int r;
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u8 channel;
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ZD_ASSERT(!irqs_disabled());
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spin_lock_irq(&mac->lock);
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if (regdomain == 0) {
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regdomain = mac->default_regdomain;
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}
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if (!zd_regdomain_supported(regdomain)) {
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spin_unlock_irq(&mac->lock);
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return -EINVAL;
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}
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mac->regdomain = regdomain;
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channel = mac->requested_channel;
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spin_unlock_irq(&mac->lock);
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r = zd_geo_init(zd_mac_to_ieee80211(mac), regdomain);
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if (r)
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return r;
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if (!zd_regdomain_supports_channel(regdomain, channel)) {
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r = reset_channel(mac);
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if (r)
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return r;
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}
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return 0;
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}
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u8 zd_mac_get_regdomain(struct zd_mac *mac)
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{
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unsigned long flags;
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u8 regdomain;
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spin_lock_irqsave(&mac->lock, flags);
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regdomain = mac->regdomain;
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spin_unlock_irqrestore(&mac->lock, flags);
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return regdomain;
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}
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/* Fallback to lowest rate, if rate is unknown. */
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static u8 rate_to_zd_rate(u8 rate)
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{
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switch (rate) {
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case IEEE80211_CCK_RATE_2MB:
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return ZD_CCK_RATE_2M;
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case IEEE80211_CCK_RATE_5MB:
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return ZD_CCK_RATE_5_5M;
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case IEEE80211_CCK_RATE_11MB:
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return ZD_CCK_RATE_11M;
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case IEEE80211_OFDM_RATE_6MB:
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return ZD_OFDM_RATE_6M;
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case IEEE80211_OFDM_RATE_9MB:
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return ZD_OFDM_RATE_9M;
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case IEEE80211_OFDM_RATE_12MB:
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return ZD_OFDM_RATE_12M;
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case IEEE80211_OFDM_RATE_18MB:
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return ZD_OFDM_RATE_18M;
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case IEEE80211_OFDM_RATE_24MB:
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return ZD_OFDM_RATE_24M;
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case IEEE80211_OFDM_RATE_36MB:
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return ZD_OFDM_RATE_36M;
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case IEEE80211_OFDM_RATE_48MB:
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return ZD_OFDM_RATE_48M;
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case IEEE80211_OFDM_RATE_54MB:
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return ZD_OFDM_RATE_54M;
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}
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return ZD_CCK_RATE_1M;
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}
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static u16 rate_to_cr_rate(u8 rate)
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{
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switch (rate) {
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case IEEE80211_CCK_RATE_2MB:
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return CR_RATE_1M;
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case IEEE80211_CCK_RATE_5MB:
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return CR_RATE_5_5M;
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case IEEE80211_CCK_RATE_11MB:
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return CR_RATE_11M;
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case IEEE80211_OFDM_RATE_6MB:
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return CR_RATE_6M;
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case IEEE80211_OFDM_RATE_9MB:
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return CR_RATE_9M;
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case IEEE80211_OFDM_RATE_12MB:
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return CR_RATE_12M;
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case IEEE80211_OFDM_RATE_18MB:
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return CR_RATE_18M;
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case IEEE80211_OFDM_RATE_24MB:
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return CR_RATE_24M;
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case IEEE80211_OFDM_RATE_36MB:
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return CR_RATE_36M;
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case IEEE80211_OFDM_RATE_48MB:
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return CR_RATE_48M;
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case IEEE80211_OFDM_RATE_54MB:
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return CR_RATE_54M;
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}
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return CR_RATE_1M;
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}
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static void try_enable_tx(struct zd_mac *mac)
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{
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unsigned long flags;
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spin_lock_irqsave(&mac->lock, flags);
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if (mac->updating_rts_rate == 0 && mac->updating_basic_rates == 0)
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netif_wake_queue(mac->netdev);
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spin_unlock_irqrestore(&mac->lock, flags);
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}
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static void set_rts_cts_work(struct work_struct *work)
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{
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struct zd_mac *mac =
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container_of(work, struct zd_mac, set_rts_cts_work.work);
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unsigned long flags;
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u8 rts_rate;
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unsigned int short_preamble;
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mutex_lock(&mac->chip.mutex);
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spin_lock_irqsave(&mac->lock, flags);
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mac->updating_rts_rate = 0;
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rts_rate = mac->rts_rate;
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short_preamble = mac->short_preamble;
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spin_unlock_irqrestore(&mac->lock, flags);
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zd_chip_set_rts_cts_rate_locked(&mac->chip, rts_rate, short_preamble);
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mutex_unlock(&mac->chip.mutex);
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try_enable_tx(mac);
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}
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static void set_basic_rates_work(struct work_struct *work)
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{
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struct zd_mac *mac =
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container_of(work, struct zd_mac, set_basic_rates_work.work);
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unsigned long flags;
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u16 basic_rates;
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mutex_lock(&mac->chip.mutex);
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spin_lock_irqsave(&mac->lock, flags);
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mac->updating_basic_rates = 0;
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basic_rates = mac->basic_rates;
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spin_unlock_irqrestore(&mac->lock, flags);
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zd_chip_set_basic_rates_locked(&mac->chip, basic_rates);
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mutex_unlock(&mac->chip.mutex);
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try_enable_tx(mac);
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}
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static void bssinfo_change(struct net_device *netdev, u32 changes)
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{
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struct zd_mac *mac = zd_netdev_mac(netdev);
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struct ieee80211softmac_device *softmac = ieee80211_priv(netdev);
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struct ieee80211softmac_bss_info *bssinfo = &softmac->bssinfo;
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int need_set_rts_cts = 0;
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int need_set_rates = 0;
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u16 basic_rates;
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unsigned long flags;
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dev_dbg_f(zd_mac_dev(mac), "changes: %x\n", changes);
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if (changes & IEEE80211SOFTMAC_BSSINFOCHG_SHORT_PREAMBLE) {
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spin_lock_irqsave(&mac->lock, flags);
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mac->short_preamble = bssinfo->short_preamble;
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spin_unlock_irqrestore(&mac->lock, flags);
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need_set_rts_cts = 1;
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}
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|
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if (changes & IEEE80211SOFTMAC_BSSINFOCHG_RATES) {
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/* Set RTS rate to highest available basic rate */
|
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u8 hi_rate = ieee80211softmac_highest_supported_rate(softmac,
|
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&bssinfo->supported_rates, 1);
|
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hi_rate = rate_to_zd_rate(hi_rate);
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|
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spin_lock_irqsave(&mac->lock, flags);
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if (hi_rate != mac->rts_rate) {
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mac->rts_rate = hi_rate;
|
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need_set_rts_cts = 1;
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}
|
|
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 ||
|
|
compare_ether_addr(hdr->addr3, ieee->bssid) != 0)
|
|
return 0;
|
|
break;
|
|
case IW_MODE_AUTO:
|
|
case IW_MODE_INFRA:
|
|
if ((fc & (IEEE80211_FCTL_TODS|IEEE80211_FCTL_FROMDS)) !=
|
|
IEEE80211_FCTL_FROMDS ||
|
|
compare_ether_addr(hdr->addr2, ieee->bssid) != 0)
|
|
return 0;
|
|
break;
|
|
default:
|
|
ZD_ASSERT(ieee->iw_mode != IW_MODE_MONITOR);
|
|
return 0;
|
|
}
|
|
|
|
return compare_ether_addr(hdr->addr1, netdev->dev_addr) == 0 ||
|
|
(is_multicast_ether_addr(hdr->addr1) &&
|
|
compare_ether_addr(hdr->addr3, netdev->dev_addr) != 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 (compare_ether_addr(hdr->addr2, zd_mac_to_ieee80211(mac)->bssid) != 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++;
|
|
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);
|
|
}
|