39 #define AE_F_SET(x)		(*x & AE_F)  argument
40 #define PREQ_IE_FLAGS(x)	(*(x))  argument
41 #define PREQ_IE_HOPCOUNT(x)	(*(x + 1))  argument
42 #define PREQ_IE_TTL(x)		(*(x + 2))  argument
43 #define PREQ_IE_PREQ_ID(x)	u32_field_get(x, 3, 0)  argument
44 #define PREQ_IE_ORIG_ADDR(x)	(x + 7)  argument
45 #define PREQ_IE_ORIG_SN(x)	u32_field_get(x, 13, 0)  argument
46 #define PREQ_IE_LIFETIME(x)	u32_field_get(x, 17, AE_F_SET(x))  argument
47 #define PREQ_IE_METRIC(x) 	u32_field_get(x, 21, AE_F_SET(x))  argument
48 #define PREQ_IE_TARGET_F(x)	(*(AE_F_SET(x) ? x + 32 : x + 26))  argument
49 #define PREQ_IE_TARGET_ADDR(x) 	(AE_F_SET(x) ? x + 33 : x + 27)  argument
50 #define PREQ_IE_TARGET_SN(x) 	u32_field_get(x, 33, AE_F_SET(x))  argument
53 #define PREP_IE_FLAGS(x)	PREQ_IE_FLAGS(x)  argument
54 #define PREP_IE_HOPCOUNT(x)	PREQ_IE_HOPCOUNT(x)  argument
55 #define PREP_IE_TTL(x)		PREQ_IE_TTL(x)  argument
56 #define PREP_IE_ORIG_ADDR(x)	(AE_F_SET(x) ? x + 27 : x + 21)  argument
57 #define PREP_IE_ORIG_SN(x)	u32_field_get(x, 27, AE_F_SET(x))  argument
58 #define PREP_IE_LIFETIME(x)	u32_field_get(x, 13, AE_F_SET(x))  argument
59 #define PREP_IE_METRIC(x)	u32_field_get(x, 17, AE_F_SET(x))  argument
60 #define PREP_IE_TARGET_ADDR(x)	(x + 3)  argument
61 #define PREP_IE_TARGET_SN(x)	u32_field_get(x, 9, 0)  argument
63 #define PERR_IE_TTL(x)		(*(x))  argument
64 #define PERR_IE_TARGET_FLAGS(x)	(*(x + 2))  argument
65 #define PERR_IE_TARGET_ADDR(x)	(x + 3)  argument
66 #define PERR_IE_TARGET_SN(x)	u32_field_get(x, 9, 0)  argument
67 #define PERR_IE_TARGET_RCODE(x)	u16_field_get(x, 13, 0)  argument
69 #define MSEC_TO_TU(x) (x*1000/1024)  argument
70 #define SN_GT(x, y) ((s32)(y - x) < 0)  argument
71 #define SN_LT(x, y) ((s32)(x - y) < 0)  argument
74 static inline u32 SN_DELTA(u32 x, u32 y)  in SN_DELTA()