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kernel-fxtec-pro1x/drivers/net/wireless/zd1211rw/zd_mac.h
Ulrich Kunitz c48cf12514 [PATCH] zd1211rw: cleanups 
Add static to 2 internal functions. Thanks goes to Adrian Bunk, who found that.

Also made some modifications to the clear functions:

After a discussion on the mailing list, I implemented this code to
have on the one hand sufficient test in debug mode, but on the
other hand reduce the overhead for structure clearing to a
minimum.

A new macro ZD_MEMCLEAR is introduced, which produces code if
DEBUG is set. Locks are not set anymore for structure clearing,
but in debug mode, there is a verification, that the locks have
not been set.

Finally, removed a misleading comment regarding locking in the disconnect
path.

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>
2006-08-14 15:43:23 -04:00

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/* 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
*/
#ifndef _ZD_MAC_H
#define _ZD_MAC_H
#include <linux/wireless.h>
#include <linux/kernel.h>
#include <net/ieee80211.h>
#include <net/ieee80211softmac.h>
#include "zd_chip.h"
#include "zd_netdev.h"
struct zd_ctrlset {
u8 modulation;
__le16 tx_length;
u8 control;
/* stores only the difference to tx_length on ZD1211B */
__le16 packet_length;
__le16 current_length;
u8 service;
__le16 next_frame_length;
} __attribute__((packed));
#define ZD_CS_RESERVED_SIZE 25
/* zd_crtlset field modulation */
#define ZD_CS_RATE_MASK 0x0f
#define ZD_CS_TYPE_MASK 0x10
#define ZD_CS_RATE(modulation) ((modulation) & ZD_CS_RATE_MASK)
#define ZD_CS_TYPE(modulation) ((modulation) & ZD_CS_TYPE_MASK)
#define ZD_CS_CCK 0x00
#define ZD_CS_OFDM 0x10
#define ZD_CS_CCK_RATE_1M 0x00
#define ZD_CS_CCK_RATE_2M 0x01
#define ZD_CS_CCK_RATE_5_5M 0x02
#define ZD_CS_CCK_RATE_11M 0x03
/* The rates for OFDM are encoded as in the PLCP header. Use ZD_OFDM_RATE_*.
*/
/* bit 5 is preamble (when in CCK mode), or a/g selection (when in OFDM mode) */
#define ZD_CS_CCK_PREA_LONG 0x00
#define ZD_CS_CCK_PREA_SHORT 0x20
#define ZD_CS_OFDM_MODE_11G 0x00
#define ZD_CS_OFDM_MODE_11A 0x20
/* zd_ctrlset control field */
#define ZD_CS_NEED_RANDOM_BACKOFF 0x01
#define ZD_CS_MULTICAST 0x02
#define ZD_CS_FRAME_TYPE_MASK 0x0c
#define ZD_CS_DATA_FRAME 0x00
#define ZD_CS_PS_POLL_FRAME 0x04
#define ZD_CS_MANAGEMENT_FRAME 0x08
#define ZD_CS_NO_SEQUENCE_CTL_FRAME 0x0c
#define ZD_CS_WAKE_DESTINATION 0x10
#define ZD_CS_RTS 0x20
#define ZD_CS_ENCRYPT 0x40
#define ZD_CS_SELF_CTS 0x80
/* Incoming frames are prepended by a PLCP header */
#define ZD_PLCP_HEADER_SIZE 5
struct rx_length_info {
__le16 length[3];
__le16 tag;
} __attribute__((packed));
#define RX_LENGTH_INFO_TAG 0x697e
struct rx_status {
/* rssi */
u8 signal_strength;
u8 signal_quality_cck;
u8 signal_quality_ofdm;
u8 decryption_type;
u8 frame_status;
} __attribute__((packed));
/* rx_status field decryption_type */
#define ZD_RX_NO_WEP 0
#define ZD_RX_WEP64 1
#define ZD_RX_TKIP 2
#define ZD_RX_AES 4
#define ZD_RX_WEP128 5
#define ZD_RX_WEP256 6
/* rx_status field frame_status */
#define ZD_RX_FRAME_MODULATION_MASK 0x01
#define ZD_RX_CCK 0x00
#define ZD_RX_OFDM 0x01
#define ZD_RX_TIMEOUT_ERROR 0x02
#define ZD_RX_FIFO_OVERRUN_ERROR 0x04
#define ZD_RX_DECRYPTION_ERROR 0x08
#define ZD_RX_CRC32_ERROR 0x10
#define ZD_RX_NO_ADDR1_MATCH_ERROR 0x20
#define ZD_RX_CRC16_ERROR 0x40
#define ZD_RX_ERROR 0x80
enum mac_flags {
MAC_FIXED_CHANNEL = 0x01,
};
struct zd_mac {
struct zd_chip chip;
spinlock_t lock;
struct net_device *netdev;
/* Unlocked reading possible */
struct iw_statistics iw_stats;
u8 qual_average;
u8 rssi_average;
u8 regdomain;
u8 default_regdomain;
u8 requested_channel;
};
static inline struct ieee80211_device *zd_mac_to_ieee80211(struct zd_mac *mac)
{
return zd_netdev_ieee80211(mac->netdev);
}
static inline struct zd_mac *zd_netdev_mac(struct net_device *netdev)
{
return ieee80211softmac_priv(netdev);
}
static inline struct zd_mac *zd_chip_to_mac(struct zd_chip *chip)
{
return container_of(chip, struct zd_mac, chip);
}
static inline struct zd_mac *zd_usb_to_mac(struct zd_usb *usb)
{
return zd_chip_to_mac(zd_usb_to_chip(usb));
}
#define zd_mac_dev(mac) (zd_chip_dev(&(mac)->chip))
int zd_mac_init(struct zd_mac *mac,
struct net_device *netdev,
struct usb_interface *intf);
void zd_mac_clear(struct zd_mac *mac);
int zd_mac_init_hw(struct zd_mac *mac, u8 device_type);
int zd_mac_open(struct net_device *netdev);
int zd_mac_stop(struct net_device *netdev);
int zd_mac_set_mac_address(struct net_device *dev, void *p);
int zd_mac_rx(struct zd_mac *mac, const u8 *buffer, unsigned int length);
int zd_mac_set_regdomain(struct zd_mac *zd_mac, u8 regdomain);
u8 zd_mac_get_regdomain(struct zd_mac *zd_mac);
int zd_mac_request_channel(struct zd_mac *mac, u8 channel);
int zd_mac_get_channel(struct zd_mac *mac, u8 *channel, u8 *flags);
int zd_mac_set_mode(struct zd_mac *mac, u32 mode);
int zd_mac_get_mode(struct zd_mac *mac, u32 *mode);
int zd_mac_get_range(struct zd_mac *mac, struct iw_range *range);
struct iw_statistics *zd_mac_get_wireless_stats(struct net_device *ndev);
#ifdef DEBUG
void zd_dump_rx_status(const struct rx_status *status);
#else
#define zd_dump_rx_status(status)
#endif /* DEBUG */
#endif /* _ZD_MAC_H */
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