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path: root/net/iucv/af_iucv.c
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Diffstat (limited to 'net/iucv/af_iucv.c')
-rw-r--r--net/iucv/af_iucv.c16
1 files changed, 14 insertions, 2 deletions
diff --git a/net/iucv/af_iucv.c b/net/iucv/af_iucv.c
index d9e9ddb8eac..53ae14c35f7 100644
--- a/net/iucv/af_iucv.c
+++ b/net/iucv/af_iucv.c
@@ -219,6 +219,7 @@ static struct sock *iucv_sock_alloc(struct socket *sock, int proto, gfp_t prio)
sock_init_data(sock, sk);
INIT_LIST_HEAD(&iucv_sk(sk)->accept_q);
+ spin_lock_init(&iucv_sk(sk)->accept_q_lock);
skb_queue_head_init(&iucv_sk(sk)->send_skb_q);
skb_queue_head_init(&iucv_sk(sk)->backlog_skb_q);
iucv_sk(sk)->send_tag = 0;
@@ -274,15 +275,25 @@ void iucv_sock_unlink(struct iucv_sock_list *l, struct sock *sk)
void iucv_accept_enqueue(struct sock *parent, struct sock *sk)
{
+ unsigned long flags;
+ struct iucv_sock *par = iucv_sk(parent);
+
sock_hold(sk);
- list_add_tail(&iucv_sk(sk)->accept_q, &iucv_sk(parent)->accept_q);
+ spin_lock_irqsave(&par->accept_q_lock, flags);
+ list_add_tail(&iucv_sk(sk)->accept_q, &par->accept_q);
+ spin_unlock_irqrestore(&par->accept_q_lock, flags);
iucv_sk(sk)->parent = parent;
parent->sk_ack_backlog++;
}
void iucv_accept_unlink(struct sock *sk)
{
+ unsigned long flags;
+ struct iucv_sock *par = iucv_sk(iucv_sk(sk)->parent);
+
+ spin_lock_irqsave(&par->accept_q_lock, flags);
list_del_init(&iucv_sk(sk)->accept_q);
+ spin_unlock_irqrestore(&par->accept_q_lock, flags);
iucv_sk(sk)->parent->sk_ack_backlog--;
iucv_sk(sk)->parent = NULL;
sock_put(sk);
@@ -298,8 +309,8 @@ struct sock *iucv_accept_dequeue(struct sock *parent, struct socket *newsock)
lock_sock(sk);
if (sk->sk_state == IUCV_CLOSED) {
- release_sock(sk);
iucv_accept_unlink(sk);
+ release_sock(sk);
continue;
}
@@ -879,6 +890,7 @@ static int iucv_callback_connreq(struct iucv_path *path,
/* Find out if this path belongs to af_iucv. */
read_lock(&iucv_sk_list.lock);
iucv = NULL;
+ sk = NULL;
sk_for_each(sk, node, &iucv_sk_list.head)
if (sk->sk_state == IUCV_LISTEN &&
!memcmp(&iucv_sk(sk)->src_name, src_name, 8)) {