From: Eric Dumazet <edumazet@google.com>
Date: Sun, 3 Nov 2019 18:24:16 -0800
Subject: ipv6: use jhash2() in rt6_exception_hash()
Patch-mainline: v5.5-rc1
Git-commit: b6b556afd21b48a372be8ed0c0f79428022e1b7c
References: bsc#1154353

Faster jhash2() can be used instead of jhash(), since
IPv6 addresses have the needed alignment requirement.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 net/ipv6/route.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -1479,11 +1479,11 @@ static u32 rt6_exception_hash(const stru
 	u32 val;
 
 	net_get_random_once(&seed, sizeof(seed));
-	val = jhash(dst, sizeof(*dst), seed);
+	val = jhash2((const u32 *)dst, sizeof(*dst)/sizeof(u32), seed);
 
 #ifdef CONFIG_IPV6_SUBTREES
 	if (src)
-		val = jhash(src, sizeof(*src), val);
+		val = jhash2((const u32 *)src, sizeof(*src)/sizeof(u32), val);
 #endif
 	return hash_32(val, FIB6_EXCEPTION_BUCKET_SIZE_SHIFT);
 }