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authorYOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>2005-11-08 09:37:56 -0800
committerDavid S. Miller <davem@davemloft.net>2005-11-08 09:37:56 -0800
commit971f359ddcb2e7a0d577479c7561bda407febe1b (patch)
tree9bca1b66b368bd1f6aa7d3a2e58f3cbd2658306c /net/ipv6/ip6_fib.c
parentf093182d313edde9b1f86dbdaf40ba4da2dbd0e7 (diff)
downloadlinux-971f359ddcb2e7a0d577479c7561bda407febe1b.tar.bz2
[IPV6]: Put addr_diff() into common header for future use.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/ip6_fib.c')
-rw-r--r--net/ipv6/ip6_fib.c54
1 files changed, 2 insertions, 52 deletions
diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c
index 4fcc5a7acf6e..1bf6d9a769e6 100644
--- a/net/ipv6/ip6_fib.c
+++ b/net/ipv6/ip6_fib.c
@@ -127,56 +127,6 @@ static __inline__ int addr_bit_set(void *token, int fn_bit)
return htonl(1 << ((~fn_bit)&0x1F)) & addr[fn_bit>>5];
}
-/*
- * find the first different bit between two addresses
- * length of address must be a multiple of 32bits
- */
-
-static __inline__ int addr_diff(void *token1, void *token2, int addrlen)
-{
- __u32 *a1 = token1;
- __u32 *a2 = token2;
- int i;
-
- addrlen >>= 2;
-
- for (i = 0; i < addrlen; i++) {
- __u32 xb;
-
- xb = a1[i] ^ a2[i];
-
- if (xb) {
- int j = 31;
-
- xb = ntohl(xb);
-
- while ((xb & (1 << j)) == 0)
- j--;
-
- return (i * 32 + 31 - j);
- }
- }
-
- /*
- * we should *never* get to this point since that
- * would mean the addrs are equal
- *
- * However, we do get to it 8) And exacly, when
- * addresses are equal 8)
- *
- * ip route add 1111::/128 via ...
- * ip route add 1111::/64 via ...
- * and we are here.
- *
- * Ideally, this function should stop comparison
- * at prefix length. It does not, but it is still OK,
- * if returned value is greater than prefix length.
- * --ANK (980803)
- */
-
- return addrlen<<5;
-}
-
static __inline__ struct fib6_node * node_alloc(void)
{
struct fib6_node *fn;
@@ -296,11 +246,11 @@ insert_above:
/* find 1st bit in difference between the 2 addrs.
- See comment in addr_diff: bit may be an invalid value,
+ See comment in __ipv6_addr_diff: bit may be an invalid value,
but if it is >= plen, the value is ignored in any case.
*/
- bit = addr_diff(addr, &key->addr, addrlen);
+ bit = __ipv6_addr_diff(addr, &key->addr, addrlen);
/*
* (intermediate)[in]