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authorPavel Emelyanov <xemul@openvz.org>2008-01-31 05:05:50 -0800
committerDavid S. Miller <davem@davemloft.net>2008-01-31 19:28:18 -0800
commit941b1d22cc035ad58b3d9b44a1c74efac2d7e499 (patch)
tree9b50211c27a209c02d97b73f74bf33cc87f4c9c3 /net
parent5ee31fc1ecdcbc234c8c56dcacef87c8e09909d8 (diff)
downloadop-kernel-dev-941b1d22cc035ad58b3d9b44a1c74efac2d7e499.zip
op-kernel-dev-941b1d22cc035ad58b3d9b44a1c74efac2d7e499.tar.gz
[NETNS]: Make bind buckets live in net namespaces.
This tags the inet_bind_bucket struct with net pointer, initializes it during creation and makes a filtering during lookup. A better hashfn, that takes the net into account is to be done in the future, but currently all bind buckets with similar port will be in one hash chain. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/ipv4/inet_connection_sock.c8
-rw-r--r--net/ipv4/inet_hashtables.c8
2 files changed, 11 insertions, 5 deletions
diff --git a/net/ipv4/inet_connection_sock.c b/net/ipv4/inet_connection_sock.c
index 7801cce..de5a41d 100644
--- a/net/ipv4/inet_connection_sock.c
+++ b/net/ipv4/inet_connection_sock.c
@@ -87,6 +87,7 @@ int inet_csk_get_port(struct inet_hashinfo *hashinfo,
struct hlist_node *node;
struct inet_bind_bucket *tb;
int ret;
+ struct net *net = sk->sk_net;
local_bh_disable();
if (!snum) {
@@ -100,7 +101,7 @@ int inet_csk_get_port(struct inet_hashinfo *hashinfo,
head = &hashinfo->bhash[inet_bhashfn(rover, hashinfo->bhash_size)];
spin_lock(&head->lock);
inet_bind_bucket_for_each(tb, node, &head->chain)
- if (tb->port == rover)
+ if (tb->ib_net == net && tb->port == rover)
goto next;
break;
next:
@@ -127,7 +128,7 @@ int inet_csk_get_port(struct inet_hashinfo *hashinfo,
head = &hashinfo->bhash[inet_bhashfn(snum, hashinfo->bhash_size)];
spin_lock(&head->lock);
inet_bind_bucket_for_each(tb, node, &head->chain)
- if (tb->port == snum)
+ if (tb->ib_net == net && tb->port == snum)
goto tb_found;
}
tb = NULL;
@@ -147,7 +148,8 @@ tb_found:
}
tb_not_found:
ret = 1;
- if (!tb && (tb = inet_bind_bucket_create(hashinfo->bind_bucket_cachep, head, snum)) == NULL)
+ if (!tb && (tb = inet_bind_bucket_create(hashinfo->bind_bucket_cachep,
+ net, head, snum)) == NULL)
goto fail_unlock;
if (hlist_empty(&tb->owners)) {
if (sk->sk_reuse && sk->sk_state != TCP_LISTEN)
diff --git a/net/ipv4/inet_hashtables.c b/net/ipv4/inet_hashtables.c
index b93d40f..db1e53a 100644
--- a/net/ipv4/inet_hashtables.c
+++ b/net/ipv4/inet_hashtables.c
@@ -28,12 +28,14 @@
* The bindhash mutex for snum's hash chain must be held here.
*/
struct inet_bind_bucket *inet_bind_bucket_create(struct kmem_cache *cachep,
+ struct net *net,
struct inet_bind_hashbucket *head,
const unsigned short snum)
{
struct inet_bind_bucket *tb = kmem_cache_alloc(cachep, GFP_ATOMIC);
if (tb != NULL) {
+ tb->ib_net = net;
tb->port = snum;
tb->fastreuse = 0;
INIT_HLIST_HEAD(&tb->owners);
@@ -359,6 +361,7 @@ int __inet_hash_connect(struct inet_timewait_death_row *death_row,
struct inet_bind_hashbucket *head;
struct inet_bind_bucket *tb;
int ret;
+ struct net *net = sk->sk_net;
if (!snum) {
int i, remaining, low, high, port;
@@ -381,7 +384,7 @@ int __inet_hash_connect(struct inet_timewait_death_row *death_row,
* unique enough.
*/
inet_bind_bucket_for_each(tb, node, &head->chain) {
- if (tb->port == port) {
+ if (tb->ib_net == net && tb->port == port) {
BUG_TRAP(!hlist_empty(&tb->owners));
if (tb->fastreuse >= 0)
goto next_port;
@@ -392,7 +395,8 @@ int __inet_hash_connect(struct inet_timewait_death_row *death_row,
}
}
- tb = inet_bind_bucket_create(hinfo->bind_bucket_cachep, head, port);
+ tb = inet_bind_bucket_create(hinfo->bind_bucket_cachep,
+ net, head, port);
if (!tb) {
spin_unlock(&head->lock);
break;
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