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authorEric Dumazet <edumazet@google.com>2015-03-18 14:05:35 -0700
committerDavid S. Miller <davem@davemloft.net>2015-03-18 22:00:34 -0400
commitd1e559d0b1b0d02f76a6bd5b768a99dc834ae926 (patch)
tree283048c1921aeec1c2dfb25e72e6e67cddffcb23 /net/ipv4/inet_hashtables.c
parentnet: introduce sk_ehashfn() helper (diff)
downloadlinux-dev-d1e559d0b1b0d02f76a6bd5b768a99dc834ae926.tar.xz
linux-dev-d1e559d0b1b0d02f76a6bd5b768a99dc834ae926.zip
inet: add IPv6 support to sk_ehashfn()
Intent is to converge IPv4 & IPv6 inet_hash functions to factorize code. IPv4 sockets initialize sk_rcv_saddr and sk_v6_daddr in this patch, thanks to new sk_daddr_set() and sk_rcv_saddr_set() helpers. __inet6_hash can now use sk_ehashfn() instead of a private inet6_sk_ehashfn() and will simply use __inet_hash() in a following patch. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to '')
-rw-r--r--net/ipv4/inet_hashtables.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/net/ipv4/inet_hashtables.c b/net/ipv4/inet_hashtables.c
index 3a86dfd7ae33..ab7f677a97db 100644
--- a/net/ipv4/inet_hashtables.c
+++ b/net/ipv4/inet_hashtables.c
@@ -36,9 +36,18 @@ static u32 inet_ehashfn(const struct net *net, const __be32 laddr,
inet_ehash_secret + net_hash_mix(net));
}
-
+/* This function handles inet_sock, but also timewait and request sockets
+ * for IPv4/IPv6.
+ */
u32 sk_ehashfn(const struct sock *sk)
{
+#if IS_ENABLED(CONFIG_IPV6)
+ if (sk->sk_family == AF_INET6 &&
+ !ipv6_addr_v4mapped(&sk->sk_v6_daddr))
+ return inet6_ehashfn(sock_net(sk),
+ &sk->sk_v6_rcv_saddr, sk->sk_num,
+ &sk->sk_v6_daddr, sk->sk_dport);
+#endif
return inet_ehashfn(sock_net(sk),
sk->sk_rcv_saddr, sk->sk_num,
sk->sk_daddr, sk->sk_dport);