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linux/drivers/net/wireless/b43legacy/xmit.h
Johannes Berg e039fa4a41 mac80211: move TX info into skb->cb 
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>
2008-05-21 21:48:11 -04:00

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#ifndef B43legacy_XMIT_H_
#define B43legacy_XMIT_H_
#include "main.h"
#define _b43legacy_declare_plcp_hdr(size) \
struct b43legacy_plcp_hdr##size { \
union { \
__le32 data; \
__u8 raw[size]; \
} __attribute__((__packed__)); \
} __attribute__((__packed__))
/* struct b43legacy_plcp_hdr4 */
_b43legacy_declare_plcp_hdr(4);
/* struct b43legacy_plcp_hdr6 */
_b43legacy_declare_plcp_hdr(6);
#undef _b43legacy_declare_plcp_hdr
/* TX header for v3 firmware */
struct b43legacy_txhdr_fw3 {
__le32 mac_ctl; /* MAC TX control */
__le16 mac_frame_ctl; /* Copy of the FrameControl */
__le16 tx_fes_time_norm; /* TX FES Time Normal */
__le16 phy_ctl; /* PHY TX control */
__u8 iv[16]; /* Encryption IV */
__u8 tx_receiver[6]; /* TX Frame Receiver address */
__le16 tx_fes_time_fb; /* TX FES Time Fallback */
struct b43legacy_plcp_hdr4 rts_plcp_fb; /* RTS fallback PLCP */
__le16 rts_dur_fb; /* RTS fallback duration */
struct b43legacy_plcp_hdr4 plcp_fb; /* Fallback PLCP */
__le16 dur_fb; /* Fallback duration */
PAD_BYTES(2);
__le16 cookie;
__le16 unknown_scb_stuff;
struct b43legacy_plcp_hdr6 rts_plcp; /* RTS PLCP */
__u8 rts_frame[18]; /* The RTS frame (if used) */
struct b43legacy_plcp_hdr6 plcp;
} __attribute__((__packed__));
/* MAC TX control */
#define B43legacy_TX4_MAC_KEYIDX 0x0FF00000 /* Security key index */
#define B43legacy_TX4_MAC_KEYIDX_SHIFT 20
#define B43legacy_TX4_MAC_KEYALG 0x00070000 /* Security key algorithm */
#define B43legacy_TX4_MAC_KEYALG_SHIFT 16
#define B43legacy_TX4_MAC_LIFETIME 0x00001000
#define B43legacy_TX4_MAC_FRAMEBURST 0x00000800
#define B43legacy_TX4_MAC_SENDCTS 0x00000400
#define B43legacy_TX4_MAC_AMPDU 0x00000300
#define B43legacy_TX4_MAC_AMPDU_SHIFT 8
#define B43legacy_TX4_MAC_CTSFALLBACKOFDM 0x00000200
#define B43legacy_TX4_MAC_FALLBACKOFDM 0x00000100
#define B43legacy_TX4_MAC_5GHZ 0x00000080
#define B43legacy_TX4_MAC_IGNPMQ 0x00000020
#define B43legacy_TX4_MAC_HWSEQ 0x00000010 /* Use Hardware Seq No */
#define B43legacy_TX4_MAC_STMSDU 0x00000008 /* Start MSDU */
#define B43legacy_TX4_MAC_SENDRTS 0x00000004
#define B43legacy_TX4_MAC_LONGFRAME 0x00000002
#define B43legacy_TX4_MAC_ACK 0x00000001
/* Extra Frame Types */
#define B43legacy_TX4_EFT_FBOFDM 0x0001 /* Data frame fb rate type */
#define B43legacy_TX4_EFT_RTSOFDM 0x0004 /* RTS/CTS rate type */
#define B43legacy_TX4_EFT_RTSFBOFDM 0x0010 /* RTS/CTS fallback rate type */
/* PHY TX control word */
#define B43legacy_TX4_PHY_OFDM 0x0001 /* Data frame rate type */
#define B43legacy_TX4_PHY_SHORTPRMBL 0x0010 /* Use short preamble */
#define B43legacy_TX4_PHY_ANT 0x03C0 /* Antenna selection */
#define B43legacy_TX4_PHY_ANT0 0x0000 /* Use antenna 0 */
#define B43legacy_TX4_PHY_ANT1 0x0100 /* Use antenna 1 */
#define B43legacy_TX4_PHY_ANTLAST 0x0300 /* Use last used antenna */
int b43legacy_generate_txhdr(struct b43legacy_wldev *dev,
u8 *txhdr,
const unsigned char *fragment_data,
unsigned int fragment_len,
const struct ieee80211_tx_info *info,
u16 cookie);
/* Transmit Status */
struct b43legacy_txstatus {
u16 cookie; /* The cookie from the txhdr */
u16 seq; /* Sequence number */
u8 phy_stat; /* PHY TX status */
u8 frame_count; /* Frame transmit count */
u8 rts_count; /* RTS transmit count */
u8 supp_reason; /* Suppression reason */
/* flags */
u8 pm_indicated;/* PM mode indicated to AP */
u8 intermediate;/* Intermediate status notification */
u8 for_ampdu; /* Status is for an AMPDU (afterburner) */
u8 acked; /* Wireless ACK received */
};
/* txstatus supp_reason values */
enum {
B43legacy_TXST_SUPP_NONE, /* Not suppressed */
B43legacy_TXST_SUPP_PMQ, /* Suppressed due to PMQ entry */
B43legacy_TXST_SUPP_FLUSH, /* Suppressed due to flush request */
B43legacy_TXST_SUPP_PREV, /* Previous fragment failed */
B43legacy_TXST_SUPP_CHAN, /* Channel mismatch */
B43legacy_TXST_SUPP_LIFE, /* Lifetime expired */
B43legacy_TXST_SUPP_UNDER, /* Buffer underflow */
B43legacy_TXST_SUPP_ABNACK, /* Afterburner NACK */
};
/* Transmit Status as received through DMA/PIO on old chips */
struct b43legacy_hwtxstatus {
PAD_BYTES(4);
__le16 cookie;
u8 flags;
u8 count;
PAD_BYTES(2);
__le16 seq;
u8 phy_stat;
PAD_BYTES(1);
} __attribute__((__packed__));
/* Receive header for v3 firmware. */
struct b43legacy_rxhdr_fw3 {
__le16 frame_len; /* Frame length */
PAD_BYTES(2);
__le16 phy_status0; /* PHY RX Status 0 */
__u8 jssi; /* PHY RX Status 1: JSSI */
__u8 sig_qual; /* PHY RX Status 1: Signal Quality */
PAD_BYTES(2); /* PHY RX Status 2 */
__le16 phy_status3; /* PHY RX Status 3 */
__le16 mac_status; /* MAC RX status */
__le16 mac_time;
__le16 channel;
} __attribute__((__packed__));
/* PHY RX Status 0 */
#define B43legacy_RX_PHYST0_GAINCTL 0x4000 /* Gain Control */
#define B43legacy_RX_PHYST0_PLCPHCF 0x0200
#define B43legacy_RX_PHYST0_PLCPFV 0x0100
#define B43legacy_RX_PHYST0_SHORTPRMBL 0x0080 /* Recvd with Short Preamble */
#define B43legacy_RX_PHYST0_LCRS 0x0040
#define B43legacy_RX_PHYST0_ANT 0x0020 /* Antenna */
#define B43legacy_RX_PHYST0_UNSRATE 0x0010
#define B43legacy_RX_PHYST0_CLIP 0x000C
#define B43legacy_RX_PHYST0_CLIP_SHIFT 2
#define B43legacy_RX_PHYST0_FTYPE 0x0003 /* Frame type */
#define B43legacy_RX_PHYST0_CCK 0x0000 /* Frame type: CCK */
#define B43legacy_RX_PHYST0_OFDM 0x0001 /* Frame type: OFDM */
#define B43legacy_RX_PHYST0_PRE_N 0x0002 /* Pre-standard N-PHY frame */
#define B43legacy_RX_PHYST0_STD_N 0x0003 /* Standard N-PHY frame */
/* PHY RX Status 2 */
#define B43legacy_RX_PHYST2_LNAG 0xC000 /* LNA Gain */
#define B43legacy_RX_PHYST2_LNAG_SHIFT 14
#define B43legacy_RX_PHYST2_PNAG 0x3C00 /* PNA Gain */
#define B43legacy_RX_PHYST2_PNAG_SHIFT 10
#define B43legacy_RX_PHYST2_FOFF 0x03FF /* F offset */
/* PHY RX Status 3 */
#define B43legacy_RX_PHYST3_DIGG 0x1800 /* DIG Gain */
#define B43legacy_RX_PHYST3_DIGG_SHIFT 11
#define B43legacy_RX_PHYST3_TRSTATE 0x0400 /* TR state */
/* MAC RX Status */
#define B43legacy_RX_MAC_BEACONSENT 0x00008000 /* Beacon send flag */
#define B43legacy_RX_MAC_KEYIDX 0x000007E0 /* Key index */
#define B43legacy_RX_MAC_KEYIDX_SHIFT 5
#define B43legacy_RX_MAC_DECERR 0x00000010 /* Decrypt error */
#define B43legacy_RX_MAC_DEC 0x00000008 /* Decryption attempted */
#define B43legacy_RX_MAC_PADDING 0x00000004 /* Pad bytes present */
#define B43legacy_RX_MAC_RESP 0x00000002 /* Response frame xmitted */
#define B43legacy_RX_MAC_FCSERR 0x00000001 /* FCS error */
/* RX channel */
#define B43legacy_RX_CHAN_GAIN 0xFC00 /* Gain */
#define B43legacy_RX_CHAN_GAIN_SHIFT 10
#define B43legacy_RX_CHAN_ID 0x03FC /* Channel ID */
#define B43legacy_RX_CHAN_ID_SHIFT 2
#define B43legacy_RX_CHAN_PHYTYPE 0x0003 /* PHY type */
u8 b43legacy_plcp_get_ratecode_cck(const u8 bitrate);
u8 b43legacy_plcp_get_ratecode_ofdm(const u8 bitrate);
void b43legacy_generate_plcp_hdr(struct b43legacy_plcp_hdr4 *plcp,
const u16 octets, const u8 bitrate);
void b43legacy_rx(struct b43legacy_wldev *dev,
struct sk_buff *skb,
const void *_rxhdr);
void b43legacy_handle_txstatus(struct b43legacy_wldev *dev,
const struct b43legacy_txstatus *status);
void b43legacy_handle_hwtxstatus(struct b43legacy_wldev *dev,
const struct b43legacy_hwtxstatus *hw);
void b43legacy_tx_suspend(struct b43legacy_wldev *dev);
void b43legacy_tx_resume(struct b43legacy_wldev *dev);
#define B43legacy_NR_QOSPARMS 22
enum {
B43legacy_QOSPARM_TXOP = 0,
B43legacy_QOSPARM_CWMIN,
B43legacy_QOSPARM_CWMAX,
B43legacy_QOSPARM_CWCUR,
B43legacy_QOSPARM_AIFS,
B43legacy_QOSPARM_BSLOTS,
B43legacy_QOSPARM_REGGAP,
B43legacy_QOSPARM_STATUS,
};
void b43legacy_qos_init(struct b43legacy_wldev *dev);
/* Helper functions for converting the key-table index from "firmware-format"
* to "raw-format" and back. The firmware API changed for this at some revision.
* We need to account for that here. */
static inline
int b43legacy_new_kidx_api(struct b43legacy_wldev *dev)
{
/* FIXME: Not sure the change was at rev 351 */
return (dev->fw.rev >= 351);
}
static inline
u8 b43legacy_kidx_to_fw(struct b43legacy_wldev *dev, u8 raw_kidx)
{
u8 firmware_kidx;
if (b43legacy_new_kidx_api(dev))
firmware_kidx = raw_kidx;
else {
if (raw_kidx >= 4) /* Is per STA key? */
firmware_kidx = raw_kidx - 4;
else
firmware_kidx = raw_kidx; /* TX default key */
}
return firmware_kidx;
}
static inline
u8 b43legacy_kidx_to_raw(struct b43legacy_wldev *dev, u8 firmware_kidx)
{
u8 raw_kidx;
if (b43legacy_new_kidx_api(dev))
raw_kidx = firmware_kidx;
else
/* RX default keys or per STA keys */
raw_kidx = firmware_kidx + 4;
return raw_kidx;
}
#endif /* B43legacy_XMIT_H_ */
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