db888aed7e
Caused by a documentation issue I mixed up fields of the zd_status structure. This patch fixes it and improves also the average computation, which is now using only measurements of packets sent by the access point. Signed-off-by: Ulrich Kunitz <kune@deine-taler.de> Signed-off-by: Daniel Drake <dsd@gentoo.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
194 lines
5.1 KiB
C
194 lines
5.1 KiB
C
/* zd_mac.h
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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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#ifndef _ZD_MAC_H
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#define _ZD_MAC_H
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#include <linux/wireless.h>
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#include <linux/kernel.h>
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#include <net/ieee80211.h>
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#include <net/ieee80211softmac.h>
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#include "zd_chip.h"
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#include "zd_netdev.h"
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struct zd_ctrlset {
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u8 modulation;
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__le16 tx_length;
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u8 control;
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/* stores only the difference to tx_length on ZD1211B */
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__le16 packet_length;
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__le16 current_length;
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u8 service;
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__le16 next_frame_length;
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} __attribute__((packed));
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#define ZD_CS_RESERVED_SIZE 25
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/* zd_crtlset field modulation */
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#define ZD_CS_RATE_MASK 0x0f
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#define ZD_CS_TYPE_MASK 0x10
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#define ZD_CS_RATE(modulation) ((modulation) & ZD_CS_RATE_MASK)
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#define ZD_CS_TYPE(modulation) ((modulation) & ZD_CS_TYPE_MASK)
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#define ZD_CS_CCK 0x00
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#define ZD_CS_OFDM 0x10
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#define ZD_CS_CCK_RATE_1M 0x00
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#define ZD_CS_CCK_RATE_2M 0x01
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#define ZD_CS_CCK_RATE_5_5M 0x02
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#define ZD_CS_CCK_RATE_11M 0x03
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/* The rates for OFDM are encoded as in the PLCP header. Use ZD_OFDM_RATE_*.
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*/
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/* bit 5 is preamble (when in CCK mode), or a/g selection (when in OFDM mode) */
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#define ZD_CS_CCK_PREA_LONG 0x00
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#define ZD_CS_CCK_PREA_SHORT 0x20
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#define ZD_CS_OFDM_MODE_11G 0x00
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#define ZD_CS_OFDM_MODE_11A 0x20
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/* zd_ctrlset control field */
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#define ZD_CS_NEED_RANDOM_BACKOFF 0x01
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#define ZD_CS_MULTICAST 0x02
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#define ZD_CS_FRAME_TYPE_MASK 0x0c
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#define ZD_CS_DATA_FRAME 0x00
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#define ZD_CS_PS_POLL_FRAME 0x04
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#define ZD_CS_MANAGEMENT_FRAME 0x08
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#define ZD_CS_NO_SEQUENCE_CTL_FRAME 0x0c
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#define ZD_CS_WAKE_DESTINATION 0x10
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#define ZD_CS_RTS 0x20
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#define ZD_CS_ENCRYPT 0x40
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#define ZD_CS_SELF_CTS 0x80
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/* Incoming frames are prepended by a PLCP header */
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#define ZD_PLCP_HEADER_SIZE 5
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struct rx_length_info {
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__le16 length[3];
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__le16 tag;
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} __attribute__((packed));
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#define RX_LENGTH_INFO_TAG 0x697e
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struct rx_status {
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u8 signal_quality_cck;
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/* rssi */
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u8 signal_strength;
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u8 signal_quality_ofdm;
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u8 decryption_type;
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u8 frame_status;
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} __attribute__((packed));
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/* rx_status field decryption_type */
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#define ZD_RX_NO_WEP 0
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#define ZD_RX_WEP64 1
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#define ZD_RX_TKIP 2
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#define ZD_RX_AES 4
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#define ZD_RX_WEP128 5
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#define ZD_RX_WEP256 6
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/* rx_status field frame_status */
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#define ZD_RX_FRAME_MODULATION_MASK 0x01
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#define ZD_RX_CCK 0x00
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#define ZD_RX_OFDM 0x01
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#define ZD_RX_TIMEOUT_ERROR 0x02
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#define ZD_RX_FIFO_OVERRUN_ERROR 0x04
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#define ZD_RX_DECRYPTION_ERROR 0x08
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#define ZD_RX_CRC32_ERROR 0x10
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#define ZD_RX_NO_ADDR1_MATCH_ERROR 0x20
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#define ZD_RX_CRC16_ERROR 0x40
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#define ZD_RX_ERROR 0x80
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enum mac_flags {
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MAC_FIXED_CHANNEL = 0x01,
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};
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#define ZD_MAC_STATS_BUFFER_SIZE 16
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struct zd_mac {
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struct net_device *netdev;
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struct zd_chip chip;
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spinlock_t lock;
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/* Unlocked reading possible */
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struct iw_statistics iw_stats;
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unsigned int stats_count;
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u8 qual_buffer[ZD_MAC_STATS_BUFFER_SIZE];
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u8 rssi_buffer[ZD_MAC_STATS_BUFFER_SIZE];
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u8 regdomain;
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u8 default_regdomain;
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u8 requested_channel;
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};
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static inline struct ieee80211_device *zd_mac_to_ieee80211(struct zd_mac *mac)
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{
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return zd_netdev_ieee80211(mac->netdev);
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}
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static inline struct zd_mac *zd_netdev_mac(struct net_device *netdev)
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{
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return ieee80211softmac_priv(netdev);
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}
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static inline struct zd_mac *zd_chip_to_mac(struct zd_chip *chip)
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{
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return container_of(chip, struct zd_mac, chip);
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}
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static inline struct zd_mac *zd_usb_to_mac(struct zd_usb *usb)
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{
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return zd_chip_to_mac(zd_usb_to_chip(usb));
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}
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#define zd_mac_dev(mac) (zd_chip_dev(&(mac)->chip))
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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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void zd_mac_clear(struct zd_mac *mac);
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int zd_mac_init_hw(struct zd_mac *mac, u8 device_type);
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int zd_mac_open(struct net_device *netdev);
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int zd_mac_stop(struct net_device *netdev);
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int zd_mac_set_mac_address(struct net_device *dev, void *p);
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int zd_mac_rx(struct zd_mac *mac, const u8 *buffer, unsigned int length);
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int zd_mac_set_regdomain(struct zd_mac *zd_mac, u8 regdomain);
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u8 zd_mac_get_regdomain(struct zd_mac *zd_mac);
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int zd_mac_request_channel(struct zd_mac *mac, u8 channel);
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int zd_mac_get_channel(struct zd_mac *mac, u8 *channel, u8 *flags);
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int zd_mac_set_mode(struct zd_mac *mac, u32 mode);
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int zd_mac_get_mode(struct zd_mac *mac, u32 *mode);
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int zd_mac_get_range(struct zd_mac *mac, struct iw_range *range);
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struct iw_statistics *zd_mac_get_wireless_stats(struct net_device *ndev);
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#ifdef DEBUG
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void zd_dump_rx_status(const struct rx_status *status);
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#else
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#define zd_dump_rx_status(status)
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#endif /* DEBUG */
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#endif /* _ZD_MAC_H */
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