netdev - [PATCH RFC 13/24] IPVS: Add IPv6 support to ip_vs_conn

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Date:	Wed, 20 Aug 2008 18:15:20 +0200
From:	Julius Volz <juliusv@...gle.com>
To:	netdev@...r.kernel.org, lvs-devel@...r.kernel.org
Cc:	horms@...ge.net.au, kaber@...sh.net, vbusam@...gle.com,
	Julius Volz <juliusv@...gle.com>
Subject: [PATCH RFC 13/24] IPVS: Add IPv6 support to ip_vs_conn_hashkey()

Add IPv6 support to ip_vs_conn_hashkey() by adding an 'af' argument and
update callers.

Signed-off-by: Julius Volz <juliusv@...gle.com>

 1 files changed, 13 insertions(+), 5 deletions(-)

diff --git a/net/ipv4/ipvs/ip_vs_conn.c b/net/ipv4/ipvs/ip_vs_conn.c
index 1a6b9d8..5e013c9 100644
--- a/net/ipv4/ipvs/ip_vs_conn.c
+++ b/net/ipv4/ipvs/ip_vs_conn.c
@@ -114,13 +114,21 @@ static inline void ct_write_unlock_bh(unsigned key)
 /*
  *	Returns hash value for IPVS connection entry
  */
-static unsigned int ip_vs_conn_hashkey(unsigned proto, __be32 addr, __be16 port)
+static unsigned int ip_vs_conn_hashkey(int af, unsigned proto,
+				       const union nf_inet_addr *addr,
+				       __be16 port)
 {
-	return jhash_3words((__force u32)addr, (__force u32)port, proto, ip_vs_conn_rnd)
+#ifdef CONFIG_IP_VS_IPV6
+	if (af == AF_INET6)
+		return jhash_3words(jhash(addr, 16, ip_vs_conn_rnd),
+				    (__force u32)port, proto, ip_vs_conn_rnd)
+			& IP_VS_CONN_TAB_MASK;
+#endif
+	return jhash_3words((__force u32)addr->ip, (__force u32)port, proto,
+			    ip_vs_conn_rnd)
 		& IP_VS_CONN_TAB_MASK;
 }
 
-
 /*
  *	Hashes ip_vs_conn in ip_vs_conn_tab by proto,addr,port.
  *	returns bool success.
@@ -131,7 +139,7 @@ static inline int ip_vs_conn_hash(struct ip_vs_conn *cp)
 	int ret;
 
 	/* Hash by protocol, client address and port */
-	hash = ip_vs_conn_hashkey(cp->protocol, cp->caddr, cp->cport);
+	hash = ip_vs_conn_hashkey(cp->af, cp->protocol, &cp->caddr, cp->cport);
 
 	ct_write_lock(hash);
 
@@ -162,7 +170,7 @@ static inline int ip_vs_conn_unhash(struct ip_vs_conn *cp)
 	int ret;
 
 	/* unhash it and decrease its reference counter */
-	hash = ip_vs_conn_hashkey(cp->protocol, cp->caddr, cp->cport);
+	hash = ip_vs_conn_hashkey(cp->af, cp->protocol, &cp->caddr, cp->cport);
 
 	ct_write_lock(hash);
 
-- 
1.5.4.5

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