e039fa4a41
This patch converts mac80211 and all drivers to have transmit information and status in skb->cb rather than allocating extra memory for it and copying all the data around. To make it fit, a union is used where only data that is necessary for all steps is kept outside of the union. A number of fixes were done by Ivo, as well as the rt2x00 part of this patch. Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
229 lines
6.7 KiB
C
229 lines
6.7 KiB
C
/* ZD1211 USB-WLAN driver for Linux
|
|
*
|
|
* Copyright (C) 2005-2007 Ulrich Kunitz <kune@deine-taler.de>
|
|
* Copyright (C) 2006-2007 Daniel Drake <dsd@gentoo.org>
|
|
*
|
|
* 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/kernel.h>
|
|
#include <net/mac80211.h>
|
|
|
|
#include "zd_chip.h"
|
|
#include "zd_ieee80211.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
|
|
|
|
/* The field modulation of struct zd_ctrlset controls the bit rate, the use
|
|
* of short or long preambles in 802.11b (CCK mode) or the use of 802.11a or
|
|
* 802.11g in OFDM mode.
|
|
*
|
|
* The term zd-rate is used for the combination of the modulation type flag
|
|
* and the "pure" rate value.
|
|
*/
|
|
#define ZD_PURE_RATE_MASK 0x0f
|
|
#define ZD_MODULATION_TYPE_MASK 0x10
|
|
#define ZD_RATE_MASK (ZD_PURE_RATE_MASK|ZD_MODULATION_TYPE_MASK)
|
|
#define ZD_PURE_RATE(modulation) ((modulation) & ZD_PURE_RATE_MASK)
|
|
#define ZD_MODULATION_TYPE(modulation) ((modulation) & ZD_MODULATION_TYPE_MASK)
|
|
#define ZD_RATE(modulation) ((modulation) & ZD_RATE_MASK)
|
|
|
|
/* The two possible modulation types. Notify that 802.11b doesn't use the CCK
|
|
* codeing for the 1 and 2 MBit/s rate. We stay with the term here to remain
|
|
* consistent with uses the term at other places.
|
|
*/
|
|
#define ZD_CCK 0x00
|
|
#define ZD_OFDM 0x10
|
|
|
|
/* The ZD1211 firmware uses proprietary encodings of the 802.11b (CCK) rates.
|
|
* For OFDM the PLCP rate encodings are used. We combine these "pure" rates
|
|
* with the modulation type flag and call the resulting values zd-rates.
|
|
*/
|
|
#define ZD_CCK_RATE_1M (ZD_CCK|0x00)
|
|
#define ZD_CCK_RATE_2M (ZD_CCK|0x01)
|
|
#define ZD_CCK_RATE_5_5M (ZD_CCK|0x02)
|
|
#define ZD_CCK_RATE_11M (ZD_CCK|0x03)
|
|
#define ZD_OFDM_RATE_6M (ZD_OFDM|ZD_OFDM_PLCP_RATE_6M)
|
|
#define ZD_OFDM_RATE_9M (ZD_OFDM|ZD_OFDM_PLCP_RATE_9M)
|
|
#define ZD_OFDM_RATE_12M (ZD_OFDM|ZD_OFDM_PLCP_RATE_12M)
|
|
#define ZD_OFDM_RATE_18M (ZD_OFDM|ZD_OFDM_PLCP_RATE_18M)
|
|
#define ZD_OFDM_RATE_24M (ZD_OFDM|ZD_OFDM_PLCP_RATE_24M)
|
|
#define ZD_OFDM_RATE_36M (ZD_OFDM|ZD_OFDM_PLCP_RATE_36M)
|
|
#define ZD_OFDM_RATE_48M (ZD_OFDM|ZD_OFDM_PLCP_RATE_48M)
|
|
#define ZD_OFDM_RATE_54M (ZD_OFDM|ZD_OFDM_PLCP_RATE_54M)
|
|
|
|
/* The bit 5 of the zd_ctrlset modulation field controls the preamble in CCK
|
|
* mode or the 802.11a/802.11g selection in OFDM mode.
|
|
*/
|
|
#define ZD_CCK_PREA_LONG 0x00
|
|
#define ZD_CCK_PREA_SHORT 0x20
|
|
#define ZD_OFDM_MODE_11G 0x00
|
|
#define ZD_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 {
|
|
u8 signal_quality_cck;
|
|
/* rssi */
|
|
u8 signal_strength;
|
|
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 housekeeping {
|
|
struct delayed_work link_led_work;
|
|
};
|
|
|
|
#define ZD_MAC_STATS_BUFFER_SIZE 16
|
|
|
|
#define ZD_MAC_MAX_ACK_WAITERS 10
|
|
|
|
struct zd_mac {
|
|
struct zd_chip chip;
|
|
spinlock_t lock;
|
|
spinlock_t intr_lock;
|
|
struct ieee80211_hw *hw;
|
|
struct housekeeping housekeeping;
|
|
struct work_struct set_multicast_hash_work;
|
|
struct work_struct set_rts_cts_work;
|
|
struct work_struct set_rx_filter_work;
|
|
struct work_struct process_intr;
|
|
struct zd_mc_hash multicast_hash;
|
|
u8 intr_buffer[USB_MAX_EP_INT_BUFFER];
|
|
u8 regdomain;
|
|
u8 default_regdomain;
|
|
int type;
|
|
int associated;
|
|
struct sk_buff_head ack_wait_queue;
|
|
struct ieee80211_channel channels[14];
|
|
struct ieee80211_rate rates[12];
|
|
struct ieee80211_supported_band band;
|
|
|
|
/* Short preamble (used for RTS/CTS) */
|
|
unsigned int short_preamble:1;
|
|
|
|
/* flags to indicate update in progress */
|
|
unsigned int updating_rts_rate:1;
|
|
|
|
/* whether to pass frames with CRC errors to stack */
|
|
unsigned int pass_failed_fcs:1;
|
|
|
|
/* whether to pass control frames to stack */
|
|
unsigned int pass_ctrl:1;
|
|
};
|
|
|
|
static inline struct zd_mac *zd_hw_mac(struct ieee80211_hw *hw)
|
|
{
|
|
return hw->priv;
|
|
}
|
|
|
|
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));
|
|
}
|
|
|
|
static inline u8 *zd_mac_get_perm_addr(struct zd_mac *mac)
|
|
{
|
|
return mac->hw->wiphy->perm_addr;
|
|
}
|
|
|
|
#define zd_mac_dev(mac) (zd_chip_dev(&(mac)->chip))
|
|
|
|
struct ieee80211_hw *zd_mac_alloc_hw(struct usb_interface *intf);
|
|
void zd_mac_clear(struct zd_mac *mac);
|
|
|
|
int zd_mac_preinit_hw(struct ieee80211_hw *hw);
|
|
int zd_mac_init_hw(struct ieee80211_hw *hw);
|
|
|
|
int zd_mac_rx(struct ieee80211_hw *hw, const u8 *buffer, unsigned int length);
|
|
void zd_mac_tx_failed(struct ieee80211_hw *hw);
|
|
void zd_mac_tx_to_dev(struct sk_buff *skb, int error);
|
|
|
|
#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 */
|