[PATCH] bcm43xx: Move TX/RX related functions to its own file. Add basic RTS/CTS code.

Signed-off-by: Michael Buesch <mbuesch@freenet.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 156 insertions, 0 deletions

diff --git a/drivers/net/wireless/bcm43xx/bcm43xx_xmit.h b/drivers/net/wireless/bcm43xx/bcm43xx_xmit.h
new file mode 100644
index 000000000000..2aed19e35c77
--- /dev/null
+++ b/drivers/net/wireless/bcm43xx/bcm43xx_xmit.h
@@ -0,0 +1,156 @@
+#ifndef BCM43xx_XMIT_H_
+#define BCM43xx_XMIT_H_
+
+#include "bcm43xx_main.h"
+
+
+#define _bcm43xx_declare_plcp_hdr(size) \
+	struct bcm43xx_plcp_hdr##size {		\
+		union {				\
+			__le32 data;		\
+			__u8 raw[size];		\
+		} __attribute__((__packed__));	\
+	} __attribute__((__packed__))
+
+/* struct bcm43xx_plcp_hdr4 */
+_bcm43xx_declare_plcp_hdr(4);
+/* struct bcm43xx_plcp_hdr6 */
+_bcm43xx_declare_plcp_hdr(6);
+
+#undef _bcm43xx_declare_plcp_hdr
+
+/* Device specific TX header. To be prepended to TX frames. */
+struct bcm43xx_txhdr {
+	union {
+		struct {
+			__le16 flags;
+			__le16 wsec_rate;
+			__le16 frame_control;
+			u16 unknown_zeroed_0;
+			__le16 control;
+			u8 wep_iv[10];
+			u8 unknown_wsec_tkip_data[3]; //FIXME
+			PAD_BYTES(3);
+			u8 mac1[6];
+			u16 unknown_zeroed_1;
+			struct bcm43xx_plcp_hdr4 rts_cts_fallback_plcp;
+			__le16 rts_cts_dur_fallback;
+			struct bcm43xx_plcp_hdr4 fallback_plcp;
+			__le16 fallback_dur_id;
+			PAD_BYTES(2);
+			__le16 cookie;
+			__le16 unknown_scb_stuff; //FIXME
+			struct bcm43xx_plcp_hdr6 rts_cts_plcp;
+			__le16 rts_cts_frame_control;
+			__le16 rts_cts_dur;
+			u8 rts_cts_mac1[6];
+			u8 rts_cts_mac2[6];
+			PAD_BYTES(2);
+			struct bcm43xx_plcp_hdr6 plcp;
+		} __attribute__((__packed__));
+		u8 raw[82];
+	} __attribute__((__packed__));
+} __attribute__((__packed__));
+
+/* Values/Masks for the device TX header */
+#define BCM43xx_TXHDRFLAG_EXPECTACK		0x0001
+#define BCM43xx_TXHDRFLAG_RTSCTS		0x0002
+#define BCM43xx_TXHDRFLAG_RTS			0x0004
+#define BCM43xx_TXHDRFLAG_FIRSTFRAGMENT		0x0008
+#define BCM43xx_TXHDRFLAG_DESTPSMODE		0x0020
+#define BCM43xx_TXHDRFLAG_RTSCTS_OFDM		0x0080
+#define BCM43xx_TXHDRFLAG_FALLBACKOFDM		0x0100
+#define BCM43xx_TXHDRFLAG_RTSCTSFALLBACK_OFDM	0x0200
+#define BCM43xx_TXHDRFLAG_CTS			0x0400
+#define BCM43xx_TXHDRFLAG_FRAMEBURST		0x0800
+
+#define BCM43xx_TXHDRCTL_OFDM			0x0001
+#define BCM43xx_TXHDRCTL_SHORT_PREAMBLE		0x0010
+#define BCM43xx_TXHDRCTL_ANTENNADIV_MASK	0x0030
+#define BCM43xx_TXHDRCTL_ANTENNADIV_SHIFT	8
+
+#define BCM43xx_TXHDR_RATE_MASK			0x0F00
+#define BCM43xx_TXHDR_RATE_SHIFT		8
+#define BCM43xx_TXHDR_RTSRATE_MASK		0xF000
+#define BCM43xx_TXHDR_RTSRATE_SHIFT		12
+#define BCM43xx_TXHDR_WSEC_KEYINDEX_MASK	0x00F0
+#define BCM43xx_TXHDR_WSEC_KEYINDEX_SHIFT	4
+#define BCM43xx_TXHDR_WSEC_ALGO_MASK		0x0003
+#define BCM43xx_TXHDR_WSEC_ALGO_SHIFT		0
+
+void bcm43xx_generate_txhdr(struct bcm43xx_private *bcm,
+			    struct bcm43xx_txhdr *txhdr,
+			    const unsigned char *fragment_data,
+			    const unsigned int fragment_len,
+			    const int is_first_fragment,
+			    const u16 cookie);
+
+/* RX header as received from the hardware. */
+struct bcm43xx_rxhdr {
+	/* Frame Length. Must be generated explicitely in PIO mode. */
+	__le16 frame_length;
+	PAD_BYTES(2);
+	/* Flags field 1 */
+	__le16 flags1;
+	u8 rssi;
+	u8 signal_quality;
+	PAD_BYTES(2);
+	/* Flags field 3 */
+	__le16 flags3;
+	/* Flags field 2 */
+	__le16 flags2;
+	/* Lower 16bits of the TSF at the time the frame started. */
+	__le16 mactime;
+	PAD_BYTES(14);
+} __attribute__((__packed__));
+
+#define BCM43xx_RXHDR_FLAGS1_OFDM		(1 << 0)
+/*#define BCM43xx_RXHDR_FLAGS1_SIGNAL???	(1 << 3) FIXME */
+#define BCM43xx_RXHDR_FLAGS1_SHORTPREAMBLE	(1 << 7)
+#define BCM43xx_RXHDR_FLAGS1_2053RSSIADJ	(1 << 14)
+
+#define BCM43xx_RXHDR_FLAGS2_INVALIDFRAME	(1 << 0)
+#define BCM43xx_RXHDR_FLAGS2_TYPE2FRAME		(1 << 2)
+/*FIXME: WEP related flags */
+
+#define BCM43xx_RXHDR_FLAGS3_2050RSSIADJ	(1 << 10)
+
+/* Transmit Status as received from the hardware. */
+struct bcm43xx_hwxmitstatus {
+	PAD_BYTES(4);
+	__le16 cookie;
+	u8 flags;
+	u8 cnt1:4,
+	   cnt2:4;
+	PAD_BYTES(2);
+	__le16 seq;
+	__le16 unknown; //FIXME
+} __attribute__((__packed__));
+
+/* Transmit Status in CPU byteorder. */
+struct bcm43xx_xmitstatus {
+	u16 cookie;
+	u8 flags;
+	u8 cnt1:4,
+	   cnt2:4;
+	u16 seq;
+	u16 unknown; //FIXME
+};
+
+#define BCM43xx_TXSTAT_FLAG_ACK		0x01
+//TODO #define BCM43xx_TXSTAT_FLAG_???	0x02
+//TODO #define BCM43xx_TXSTAT_FLAG_???	0x04
+//TODO #define BCM43xx_TXSTAT_FLAG_???	0x08
+//TODO #define BCM43xx_TXSTAT_FLAG_???	0x10
+#define BCM43xx_TXSTAT_FLAG_IGNORE	0x20
+//TODO #define BCM43xx_TXSTAT_FLAG_???	0x40
+//TODO #define BCM43xx_TXSTAT_FLAG_???	0x80
+
+u8 bcm43xx_plcp_get_ratecode_cck(const u8 bitrate);
+u8 bcm43xx_plcp_get_ratecode_ofdm(const u8 bitrate);
+
+int bcm43xx_rx(struct bcm43xx_private *bcm,
+	       struct sk_buff *skb,
+	       struct bcm43xx_rxhdr *rxhdr);
+
+#endif /* BCM43xx_XMIT_H_ */