Subject: [PATCH] nethost: only display ipv4 udp sockets in proc for the current host.
From: Eric W. Biederman <ebiederman@lnxi.com>
Date: 1133875497 -0700

---

 include/net/udp.h |    1 +
 net/ipv4/udp.c    |    6 ++++--
 2 files changed, 5 insertions(+), 2 deletions(-)

b62deedf8538d3b5c3b3416e906369a5b1890e19
diff --git a/include/net/udp.h b/include/net/udp.h
index b861bf4..cd961f8 100644
--- a/include/net/udp.h
+++ b/include/net/udp.h
@@ -90,6 +90,7 @@ struct udp_seq_afinfo {
 
 struct udp_iter_state {
 	sa_family_t		family;
+	struct nethost		*host;
 	int			bucket;
 	struct seq_operations	seq_ops;
 };
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index caace8a..129268a 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1393,7 +1393,8 @@ static struct sock *udp_get_first(struct
 	for (state->bucket = 0; state->bucket < UDP_HTABLE_SIZE; ++state->bucket) {
 		struct hlist_node *node;
 		sk_for_each(sk, node, &udp_hash[state->bucket]) {
-			if (sk->sk_family == state->family)
+			if ((sk->sk_family == state->family) &&
+			    (sk->sk_host == state->host))
 				goto found;
 		}
 	}
@@ -1410,7 +1411,7 @@ static struct sock *udp_get_next(struct 
 		sk = sk_next(sk);
 try_again:
 		;
-	} while (sk && sk->sk_family != state->family);
+	} while ((sk && sk->sk_family != state->family) && (sk->sk_host != state->host));
 
 	if (!sk && ++state->bucket < UDP_HTABLE_SIZE) {
 		sk = sk_head(&udp_hash[state->bucket]);
@@ -1464,6 +1465,7 @@ static int udp_seq_open(struct inode *in
 		goto out;
 	memset(s, 0, sizeof(*s));
 	s->family		= afinfo->family;
+	s->host			= current->host;
 	s->seq_ops.start	= udp_seq_start;
 	s->seq_ops.next		= udp_seq_next;
 	s->seq_ops.show		= afinfo->seq_show;
-- 
1.0.GIT