From: Jan Maria Matejka <mq@ucw.cz>
Date: Tue, 30 Oct 2018 14:25:32 +0000 (+0100)
Subject: Changed IPv4 hash function to simple multiplication.
X-Git-Tag: v2.0.3~33
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=84661bf6da683d70e6e5e0e490d95abaf91b470b;p=thirdparty%2Fbird.git

Changed IPv4 hash function to simple multiplication.
---

diff --git a/lib/ip.h b/lib/ip.h
index cc6be384b..b78a5e228 100644
--- a/lib/ip.h
+++ b/lib/ip.h
@@ -186,13 +186,7 @@ static inline int ipa_nonzero2(ip_addr a)
  */
 
 static inline u32 ip4_hash(ip4_addr a)
-{
-  /* Returns a 32-bit value, although low-order bits are not mixed */
-  u32 x = _I(a);
-  x ^= x << 16;
-  x ^= x << 12;
-  return x;
-}
+{ return u32_hash(_I(a)); }
 
 static inline u32 ip6_hash(ip6_addr a)
 {