diff options
| -rw-r--r-- | include/net/iucv/af_iucv.h | 1 | ||||
| -rw-r--r-- | net/iucv/af_iucv.c | 16 |
2 files changed, 15 insertions, 2 deletions
diff --git a/include/net/iucv/af_iucv.h b/include/net/iucv/af_iucv.h index f9bd11be189..b6c468cd7f5 100644 --- a/include/net/iucv/af_iucv.h +++ b/include/net/iucv/af_iucv.h @@ -60,6 +60,7 @@ struct iucv_sock { char dst_user_id[8]; char dst_name[8]; struct list_head accept_q; + spinlock_t accept_q_lock; struct sock *parent; struct iucv_path *path; struct sk_buff_head send_skb_q; 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)) { |