diff options
Diffstat (limited to 'lib/ip.h')
| -rw-r--r-- | lib/ip.h | 17 |
1 files changed, 15 insertions, 2 deletions
@@ -280,10 +280,16 @@ static inline uint ip6_pxlen(ip6_addr a, ip6_addr b) } static inline u32 ip4_getbit(ip4_addr a, uint pos) -{ return _I(a) & (0x80000000 >> pos); } +{ return (_I(a) >> (31 - pos)) & 1; } + +static inline u32 ip4_getbits(ip4_addr a, uint pos, uint n) +{ return (_I(a) >> ((32 - n) - pos)) & ((1u << n) - 1); } static inline u32 ip6_getbit(ip6_addr a, uint pos) -{ return a.addr[pos / 32] & (0x80000000 >> (pos % 32)); } +{ return (a.addr[pos / 32] >> (31 - (pos % 32))) & 0x1; } + +static inline u32 ip6_getbits(ip6_addr a, uint pos, uint n) +{ return (a.addr[pos / 32] >> ((32 - n) - (pos % 32))) & ((1u << n) - 1); } static inline u32 ip4_setbit(ip4_addr *a, uint pos) { return _I(*a) |= (0x80000000 >> pos); } @@ -297,6 +303,13 @@ static inline u32 ip4_clrbit(ip4_addr *a, uint pos) static inline u32 ip6_clrbit(ip6_addr *a, uint pos) { return a->addr[pos / 32] &= ~(0x80000000 >> (pos % 32)); } +static inline ip4_addr ip4_setbits(ip4_addr a, uint pos, uint val) +{ _I(a) |= val << (31 - pos); return a; } + +static inline ip6_addr ip6_setbits(ip6_addr a, uint pos, uint val) +{ a.addr[pos / 32] |= val << (31 - pos % 32); return a; } + + static inline ip4_addr ip4_opposite_m1(ip4_addr a) { return _MI4(_I(a) ^ 1); } |