summaryrefslogtreecommitdiffstats
path: root/net/ipv4/tcp_ipv4.c
diff options
context:
space:
mode:
authorDavid S. Miller <davem@davemloft.net>2012-06-09 01:25:47 -0700
committerDavid S. Miller <davem@davemloft.net>2012-06-09 01:25:47 -0700
commit4670fd819e7f47392c7c6fc6168ea2857c66d163 (patch)
treeb8e90a8a449c0b42b77b54313683ab2d0edb09f3 /net/ipv4/tcp_ipv4.c
parentfbfe95a42e90b3dd079cc9019ba7d7700feee0f6 (diff)
tcp: Get rid of inetpeer special cases.
The get_peer method TCP uses is full of special cases that make no sense accommodating, and it also gets in the way of doing more reasonable things here. First of all, if the socket doesn't have a usable cached route, there is no sense in trying to optimize timewait recycling. Likewise for the case where we have IP options, such as SRR enabled, that make the IP header destination address (and thus the destination address of the route key) differ from that of the connection's destination address. Just return a NULL peer in these cases, and thus we're also able to get rid of the clumsy inetpeer release logic. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_ipv4.c')
-rw-r--r--net/ipv4/tcp_ipv4.c21
1 files changed, 8 insertions, 13 deletions
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 833e8d96a63..77f049d00db 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -1820,23 +1820,18 @@ do_time_wait:
goto discard_it;
}
-struct inet_peer *tcp_v4_get_peer(struct sock *sk, bool *release_it)
+struct inet_peer *tcp_v4_get_peer(struct sock *sk)
{
struct rtable *rt = (struct rtable *) __sk_dst_get(sk);
struct inet_sock *inet = inet_sk(sk);
- struct net *net = sock_net(sk);
- struct inet_peer *peer;
-
- if (!rt ||
- inet->cork.fl.u.ip4.daddr != inet->inet_daddr) {
- peer = inet_getpeer_v4(net, inet->inet_daddr, 1);
- *release_it = true;
- } else {
- peer = rt_get_peer_create(rt, inet->inet_daddr);
- *release_it = false;
- }
- return peer;
+ /* If we don't have a valid cached route, or we're doing IP
+ * options which make the IPv4 header destination address
+ * different from our peer's, do not bother with this.
+ */
+ if (!rt || inet->cork.fl.u.ip4.daddr != inet->inet_daddr)
+ return NULL;
+ return rt_get_peer_create(rt, inet->inet_daddr);
}
EXPORT_SYMBOL(tcp_v4_get_peer);