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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
parent5b441f76f1b83591e8cd9d60ba1df3a2aacde27f (diff)
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 'net/ipv4')
-rw-r--r--net/ipv4/inet_hashtables.c11
-rw-r--r--net/ipv4/tcp_ipv4.c8
2 files changed, 14 insertions, 5 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);
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 80067d5858b4..ca207df4af1c 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -189,7 +189,7 @@ int tcp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
if (!inet->inet_saddr)
inet->inet_saddr = fl4->saddr;
- inet->inet_rcv_saddr = inet->inet_saddr;
+ sk_rcv_saddr_set(sk, inet->inet_saddr);
if (tp->rx_opt.ts_recent_stamp && inet->inet_daddr != daddr) {
/* Reset inherited state */
@@ -204,7 +204,7 @@ int tcp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
tcp_fetch_timewait_stamp(sk, &rt->dst);
inet->inet_dport = usin->sin_port;
- inet->inet_daddr = daddr;
+ sk_daddr_set(sk, daddr);
inet_csk(sk)->icsk_ext_hdr_len = 0;
if (inet_opt)
@@ -1319,8 +1319,8 @@ struct sock *tcp_v4_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
newtp = tcp_sk(newsk);
newinet = inet_sk(newsk);
ireq = inet_rsk(req);
- newinet->inet_daddr = ireq->ir_rmt_addr;
- newinet->inet_rcv_saddr = ireq->ir_loc_addr;
+ sk_daddr_set(newsk, ireq->ir_rmt_addr);
+ sk_rcv_saddr_set(newsk, ireq->ir_loc_addr);
newinet->inet_saddr = ireq->ir_loc_addr;
inet_opt = ireq->opt;
rcu_assign_pointer(newinet->inet_opt, inet_opt);