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authorYOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>2008-04-10 15:42:08 +0900
committerYOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>2008-04-12 13:43:15 +0900
commit3eb84f49290461e2b83d6e8ee1f3f0e504340c8b (patch)
tree5363f47792e3e41921a86e1695f378a8555795f4 /net/ipv6
parentfed85383ac34d82e96f227ce49ce68117cec23a0 (diff)
[IPV6] ADDRCONF: Uninline ipv6_addr_hash().
The function is only used in net/ipv6/addrconf.c. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Diffstat (limited to 'net/ipv6')
-rw-r--r--net/ipv6/addrconf.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index ed9938014cf..b17fafc5624 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -541,6 +541,25 @@ ipv6_link_dev_addr(struct inet6_dev *idev, struct inet6_ifaddr *ifp)
*ifap = ifp;
}
+/*
+ * Hash function taken from net_alias.c
+ */
+static u8 ipv6_addr_hash(const struct in6_addr *addr)
+{
+ __u32 word;
+
+ /*
+ * We perform the hash function over the last 64 bits of the address
+ * This will include the IEEE address token on links that support it.
+ */
+
+ word = (__force u32)(addr->s6_addr32[2] ^ addr->s6_addr32[3]);
+ word ^= (word >> 16);
+ word ^= (word >> 8);
+
+ return ((word ^ (word >> 4)) & 0x0f);
+}
+
/* On success it returns ifp with increased reference count */
static struct inet6_ifaddr *