From d1e559d0b1b0d02f76a6bd5b768a99dc834ae926 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Wed, 18 Mar 2015 14:05:35 -0700 Subject: 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 Signed-off-by: David S. Miller --- net/ipv4/inet_hashtables.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) (limited to 'net/ipv4/inet_hashtables.c') 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); -- cgit v1.2.3-59-g8ed1b