af_unix: Put a socket into a per-netns hash table.
This commit replaces the global hash table with a per-netns one and removes
the global one.
We now link a socket in each netns's hash table so we can save some netns
comparisons when iterating through a hash bucket.
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/unix/diag.c b/net/unix/diag.c
index 7fc37743..4d0f0ca 100644
--- a/net/unix/diag.c
+++ b/net/unix/diag.c
@@ -210,9 +210,7 @@ static int unix_diag_dump(struct sk_buff *skb, struct netlink_callback *cb)
num = 0;
spin_lock(&unix_table_locks[slot]);
spin_lock(&net->unx.table.locks[slot]);
- sk_for_each(sk, &unix_socket_table[slot]) {
- if (!net_eq(sock_net(sk), net))
- continue;
+ sk_for_each(sk, &net->unx.table.buckets[slot]) {
if (num < s_num)
goto next;
if (!(req->udiag_states & (1 << sk->sk_state)))
@@ -246,13 +244,14 @@ static struct sock *unix_lookup_by_ino(struct net *net, unsigned int ino)
for (i = 0; i < UNIX_HASH_SIZE; i++) {
spin_lock(&unix_table_locks[i]);
spin_lock(&net->unx.table.locks[i]);
- sk_for_each(sk, &unix_socket_table[i])
+ sk_for_each(sk, &net->unx.table.buckets[i]) {
if (ino == sock_i_ino(sk)) {
sock_hold(sk);
spin_unlock(&net->unx.table.locks[i]);
spin_unlock(&unix_table_locks[i]);
return sk;
}
+ }
spin_unlock(&net->unx.table.locks[i]);
spin_unlock(&unix_table_locks[i]);
}
@@ -277,8 +276,6 @@ static int unix_diag_get_exact(struct sk_buff *in_skb,
err = -ENOENT;
if (sk == NULL)
goto out_nosk;
- if (!net_eq(sock_net(sk), net))
- goto out;
err = sock_diag_check_cookie(sk, req->udiag_cookie);
if (err)
