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Bluetooth: Add Three-wire header value convenience macros 

This patch adds convenience macros for reading Three-wire header values.
This will help make the code more readable.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
This commit is contained in:
Johan Hedberg 2012-07-16 16:12:07 +03:00 committed by Gustavo Padovan
parent c0a1b73c3f
commit 01977c0bbb
1 changed files with 8 additions and 0 deletions
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8
drivers/bluetooth/hci_h5.c
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@ -43,6 +43,14 @@
*/
#define H5_MAX_LEN (4 + 0xfff + 2)
/* Convenience macros for reading Three-wire header values */
#define H5_HDR_SEQ(hdr) ((hdr)[0] & 0x07)
#define H5_HDR_ACK(hdr) (((hdr)[0] >> 3) & 0x07)
#define H5_HDR_CRC(hdr) (((hdr)[0] >> 6) & 0x01)
#define H5_HDR_RELIABLE(hdr) (((hdr)[0] >> 7) & 0x01)
#define H5_HDR_PKT_TYPE(hdr) ((hdr)[1] & 0x0f)
#define H5_HDR_LEN(hdr) ((((hdr)[1] >> 4) & 0xff) + ((hdr)[2] << 4))
#define SLIP_DELIMITER 0xc0
#define SLIP_ESC 0xdb
#define SLIP_ESC_DELIM 0xdc