drivers/net/wireless/b43legacy/xmit.h - kernel/msm-4.9 - Gitiles

 #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_ENC		0x0003 /* Data frame encoding */
 #define B43legacy_TX4_PHY_ENC_CCK	0x0000 /* CCK */
 #define B43legacy_TX4_PHY_ENC_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,
 			      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_ */
	#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_ENC 0x0003 /* Data frame encoding */
	#define B43legacy_TX4_PHY_ENC_CCK 0x0000 /* CCK */
	#define B43legacy_TX4_PHY_ENC_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,
	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_ */