-void
-ip4_address_normalize (ip4_address_t * ip4, u8 preflen)
-{
- ASSERT (preflen <= 32);
- if (preflen == 0)
- ip4->data_u32 = 0;
- else
- ip4->data_u32 &= clib_net_to_host_u32 (0xffffffff << (32 - preflen));
-}
-
-void
-ip6_address_normalize (ip6_address_t * ip6, u8 preflen)
-{
- ASSERT (preflen <= 128);
- if (preflen == 0)
- {
- ip6->as_u64[0] = 0;
- ip6->as_u64[1] = 0;
- }
- else if (preflen <= 64)
- {
- ip6->as_u64[0] &=
- clib_host_to_net_u64 (0xffffffffffffffffL << (64 - preflen));
- ip6->as_u64[1] = 0;
- }
- else
- ip6->as_u64[1] &=
- clib_host_to_net_u64 (0xffffffffffffffffL << (128 - preflen));
-}
-
-void
-ip4_preflen_to_mask (u8 pref_len, ip4_address_t * ip)
-{
- if (pref_len == 0)
- ip->as_u32 = 0;
- else
- ip->as_u32 = clib_host_to_net_u32 (~((1 << (32 - pref_len)) - 1));
-}
-
-u32
-ip4_mask_to_preflen (ip4_address_t * mask)
-{
- if (mask->as_u32 == 0)
- return 0;
- return (32 - log2_first_set (clib_net_to_host_u32 (mask->as_u32)));
-}
-
-void
-ip4_prefix_max_address_host_order (ip4_address_t * ip, u8 plen,
- ip4_address_t * res)
-{
- u32 not_mask;
- not_mask = (1 << (32 - plen)) - 1;
- res->as_u32 = clib_net_to_host_u32 (ip->as_u32) + not_mask;
-}
-
-void
-ip6_preflen_to_mask (u8 pref_len, ip6_address_t * mask)
-{
- if (pref_len == 0)
- {
- mask->as_u64[0] = 0;
- mask->as_u64[1] = 0;
- }
- else if (pref_len <= 64)
- {
- mask->as_u64[0] =
- clib_host_to_net_u64 (0xffffffffffffffffL << (64 - pref_len));
- mask->as_u64[1] = 0;
- }
- else
- {
- mask->as_u64[0] = 0xffffffffffffffffL;
- mask->as_u64[1] =
- clib_host_to_net_u64 (0xffffffffffffffffL << (128 - pref_len));
- }
-}
-
-void
-ip6_prefix_max_address_host_order (ip6_address_t * ip, u8 plen,
- ip6_address_t * res)
-{
- u64 not_mask;
- if (plen == 0)
- {
- res->as_u64[0] = 0xffffffffffffffffL;
- res->as_u64[1] = 0xffffffffffffffffL;
- }
- else if (plen <= 64)
- {
- not_mask = ((u64) 1 << (64 - plen)) - 1;
- res->as_u64[0] = clib_net_to_host_u64 (ip->as_u64[0]) + not_mask;
- res->as_u64[1] = 0xffffffffffffffffL;
- }
- else
- {
- not_mask = ((u64) 1 << (128 - plen)) - 1;
- res->as_u64[1] = clib_net_to_host_u64 (ip->as_u64[1]) + not_mask;
- }
-}
-
-u32
-ip6_mask_to_preflen (ip6_address_t * mask)
-{
- u8 first1, first0;
- if (mask->as_u64[0] == 0 && mask->as_u64[1] == 0)
- return 0;
- first1 = log2_first_set (clib_net_to_host_u64 (mask->as_u64[1]));
- first0 = log2_first_set (clib_net_to_host_u64 (mask->as_u64[0]));
-
- if (first1 != 0)
- return 128 - first1;
- else
- return 64 - first0;
-}
-