diff options
| -rw-r--r-- | vnet/vnet/lisp-cp/lisp_types.c | 98 |
1 files changed, 57 insertions, 41 deletions
diff --git a/vnet/vnet/lisp-cp/lisp_types.c b/vnet/vnet/lisp-cp/lisp_types.c index b5c7c3e964a..753b22933ec 100644 --- a/vnet/vnet/lisp-cp/lisp_types.c +++ b/vnet/vnet/lisp-cp/lisp_types.c @@ -523,56 +523,72 @@ ip_address_set(ip_address_t * dst, void * src, u8 version) ip_addr_version(dst) = version; } -void -ip_prefix_normalize(ip_prefix_t * a) +static void +ip_prefix_normalize_ip4 (ip4_address_t * ip4, u8 preflen) { - ip_address_t * ip; - ip4_address_t * ip4; - ip6_address_t * ip6; - int preflen = ip_prefix_len(a); u32 mask = ~0; - u64 mask_6[2]; + + ASSERT (ip4); + + if (32 <= preflen) + { + return; + } + + mask = pow2_mask (preflen) << (32 - preflen); + mask = clib_host_to_net_u32 (mask); + ip4->data_u32 &= mask; +} + +static void +ip_prefix_normalize_ip6 (ip6_address_t * ip6, u8 preflen) +{ + u8 mask_6[16]; u32 * m; - u32 j, i0, i1; + u8 j ,i0, i1; - ip = &ip_prefix_addr (a); - switch (ip_addr_version (ip)) - { - case IP4: - if (32 <= preflen) - { - break; - } + ASSERT (ip6); - ip4 = &ip_addr_v4 (ip); - mask = pow2_mask (preflen) << (32 - preflen); - mask = clib_host_to_net_u32 (mask); - ip4->data_u32 &= mask; - break; + memset (mask_6, 0, sizeof (mask_6)); - case IP6: - if (128 <= preflen) - { - break; - } - ip6 = &ip_addr_v6 (ip); - memset(mask_6, 0, sizeof(mask_6)); - m = (u32 * ) mask_6; + if (128 <= preflen) + { + return; + } - i0 = preflen / 32; - i1 = preflen % 32; - for (j = 0; j < i0; j++) - { - m[j] = ~0; - } + i1 = preflen % 32; + i0 = preflen / 32; + m = (u32 * ) &mask_6[0]; - if (i1) - { - m[i0] = clib_host_to_net_u32 (pow2_mask(i1) << (32 - i1)); - } + for (j = 0; j < i0; j++) + { + m[j] = ~0; + } + + if (i1) + { + m[i0] = clib_host_to_net_u32 (pow2_mask(i1) << (32 - i1)); + } + + for (j = 0; j < sizeof(mask_6); j++) + { + ip6->as_u8[j] &= mask_6[j]; + } +} + +void +ip_prefix_normalize(ip_prefix_t * a) +{ + u8 preflen = ip_prefix_len(a); - ip6->as_u64[0] &= mask_6[0]; - ip6->as_u64[1] &= mask_6[1]; + switch (ip_prefix_version (a)) + { + case IP4: + ip_prefix_normalize_ip4(&ip_prefix_v4(a), preflen); + break; + + case IP6: + ip_prefix_normalize_ip6(&ip_prefix_v6(a), preflen); break; default: |