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authorAndrej Kozemcak <akozemca@cisco.com>2016-07-29 15:18:14 +0200
committerAndrej Kozemcak <akozemca@cisco.com>2016-07-29 16:07:05 +0200
commitae2d252039bf58e95202dcd695a2cd2a5d3eee9a (patch)
treebe3dd4fc1cf66adf4c2cb541010a7c0d2ab6ba15
parentc11ce3ee2552c363879082ed8cff048d87389eb9 (diff)
LISP - fix bug in ip_prefix_normalize_ip6
- fix bug - refactoring code Change-Id: I2c330f3fbdead567b65c889cfffc2562d99b61db Signed-off-by: Andrej Kozemcak <akozemca@cisco.com>
-rw-r--r--vnet/vnet/lisp-cp/lisp_types.c98
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 b5c7c3e9..753b2293 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: