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mac80211: path IE fields macros, fix alignment problems and clean up

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Signed-off-by: Luis Carlos Cobo <luisca@cozybit.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Luis Carlos Cobo 2008-02-29 17:07:54 -08:00 committed by John W. Linville
parent b4e08ea141
commit a00de5d08b
1 changed files with 32 additions and 30 deletions
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34
net/mac80211/mesh_hwmp.c
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@ -7,6 +7,7 @@
* published by the Free Software Foundation.
*/
#include <asm/unaligned.h>
#include "mesh.h"
#define IEEE80211_FC(type, stype) cpu_to_le16(type | stype)
@ -24,40 +25,41 @@
/* Reply and forward */
#define MP_F_RF 0x2
static inline u32 u32_field_get(u8 *preq_elem, int offset, bool ae)
{
if (ae)
offset += 6;
return le32_to_cpu(get_unaligned((__le32 *) (preq_elem + offset)));
}
/* HWMP IE processing macros */
#define AE_F (1<<6)
#define AE_F_SET(x) (*x & AE_F)
#define PREQ_IE_FLAGS(x) (*(x))
#define PREQ_IE_HOPCOUNT(x) (*(x + 1))
#define PREQ_IE_TTL(x) (*(x + 2))
#define PREQ_IE_PREQ_ID(x) le32_to_cpu(*((__le32 *) (x + 3)))
#define PREQ_IE_PREQ_ID(x) u32_field_get(x, 3, 0)
#define PREQ_IE_ORIG_ADDR(x) (x + 7)
#define PREQ_IE_ORIG_DSN(x) le32_to_cpu(*((__le32 *) (x + 13)))
#define PREQ_IE_LIFETIME(x) le32_to_cpu(*((__le32 *) \
(AE_F_SET(x) ? x + 23 : x + 17)))
#define PREQ_IE_METRIC(x) le32_to_cpu(*((__le32 *) \
(AE_F_SET(x) ? x + 27 : x + 21)))
#define PREQ_IE_ORIG_DSN(x) u32_field_get(x, 13, 0);
#define PREQ_IE_LIFETIME(x) u32_field_get(x, 17, AE_F_SET(x));
#define PREQ_IE_METRIC(x) u32_field_get(x, 21, AE_F_SET(x));
#define PREQ_IE_DST_F(x) (*(AE_F_SET(x) ? x + 32 : x + 26))
#define PREQ_IE_DST_ADDR(x) (AE_F_SET(x) ? x + 33 : x + 27)
#define PREQ_IE_DST_DSN(x) le32_to_cpu(*((__le32 *) \
(AE_F_SET(x) ? x + 39 : x + 33)))
#define PREQ_IE_DST_DSN(x) u32_field_get(x, 33, AE_F_SET(x));
#define PREP_IE_FLAGS(x) PREQ_IE_FLAGS(x)
#define PREP_IE_HOPCOUNT(x) PREQ_IE_HOPCOUNT(x)
#define PREP_IE_TTL(x) PREQ_IE_TTL(x)
#define PREP_IE_ORIG_ADDR(x) (x + 3)
#define PREP_IE_ORIG_DSN(x) le32_to_cpu(*((__le32 *) (x + 9)))
#define PREP_IE_LIFETIME(x) le32_to_cpu(*((__le32 *) \
(AE_F_SET(x) ? x + 19 : x + 13)))
#define PREP_IE_METRIC(x) le32_to_cpu(*((__le32 *) \
(AE_F_SET(x) ? x + 23 : x + 17)))
#define PREP_IE_ORIG_DSN(x) u32_field_get(x, 9, 0);
#define PREP_IE_LIFETIME(x) u32_field_get(x, 13, AE_F_SET(x));
#define PREP_IE_METRIC(x) u32_field_get(x, 17, AE_F_SET(x));
#define PREP_IE_DST_ADDR(x) (AE_F_SET(x) ? x + 27 : x + 21)
#define PREP_IE_DST_DSN(x) le32_to_cpu(*((__le32 *) \
(AE_F_SET(x) ? x + 33 : x + 27)))
#define PREP_IE_DST_DSN(x) u32_field_get(x, 27, AE_F_SET(x));
#define PERR_IE_DST_ADDR(x) (x + 2)
#define PERR_IE_DST_DSN(x) le32_to_cpu(*((__le32 *) (x + 8)))
#define PERR_IE_DST_DSN(x) u32_field_get(x, 8, 0);
#define TU_TO_EXP_TIME(x) (jiffies + msecs_to_jiffies(x * 1024 / 1000))
#define MSEC_TO_TU(x) (x*1000/1024)