Commit a00de5d0 authored by Luis Carlos Cobo's avatar Luis Carlos Cobo Committed by John W. Linville
Browse files

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



Signed-off-by: default avatarLuis Carlos Cobo <luisca@cozybit.com>
Acked-by: default avatarJohannes Berg <johannes@sipsolutions.net>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent b4e08ea1

net/mac80211/mesh_hwmp.c

+35 −33
Original line number Diff line number Diff line
@@ -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)