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-rw-r--r--net/llc/af_llc.c147
1 files changed, 67 insertions, 80 deletions
diff --git a/net/llc/af_llc.c b/net/llc/af_llc.c
index aed61e6376e..436c8db67f5 100644
--- a/net/llc/af_llc.c
+++ b/net/llc/af_llc.c
@@ -426,12 +426,30 @@ static int llc_ui_connect(struct socket *sock, struct sockaddr *uaddr,
sk->sk_state = TCP_CLOSE;
goto out;
}
- rc = llc_ui_wait_for_conn(sk, sk->sk_rcvtimeo);
- if (rc)
- dprintk("%s: llc_ui_wait_for_conn failed=%d\n", __FUNCTION__, rc);
+
+ if (sk->sk_state == TCP_SYN_SENT) {
+ const int timeo = sock_sndtimeo(sk, flags & O_NONBLOCK);
+
+ if (!timeo || !llc_ui_wait_for_conn(sk, timeo))
+ goto out;
+
+ rc = sock_intr_errno(timeo);
+ if (signal_pending(current))
+ goto out;
+ }
+
+ if (sk->sk_state == TCP_CLOSE)
+ goto sock_error;
+
+ sock->state = SS_CONNECTED;
+ rc = 0;
out:
release_sock(sk);
return rc;
+sock_error:
+ rc = sock_error(sk) ? : -ECONNABORTED;
+ sock->state = SS_UNCONNECTED;
+ goto out;
}
/**
@@ -472,117 +490,88 @@ out:
static int llc_ui_wait_for_disc(struct sock *sk, int timeout)
{
- DECLARE_WAITQUEUE(wait, current);
- int rc;
+ DEFINE_WAIT(wait);
+ int rc = 0;
- add_wait_queue_exclusive(sk->sk_sleep, &wait);
- for (;;) {
- __set_current_state(TASK_INTERRUPTIBLE);
- rc = 0;
- if (sk->sk_state != TCP_CLOSE) {
- release_sock(sk);
- timeout = schedule_timeout(timeout);
- lock_sock(sk);
- } else
- break;
+ prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
+ while (sk->sk_state != TCP_CLOSE) {
+ release_sock(sk);
+ timeout = schedule_timeout(timeout);
+ lock_sock(sk);
rc = -ERESTARTSYS;
if (signal_pending(current))
break;
rc = -EAGAIN;
if (!timeout)
break;
+ rc = 0;
+ prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
}
- __set_current_state(TASK_RUNNING);
- remove_wait_queue(sk->sk_sleep, &wait);
+ finish_wait(sk->sk_sleep, &wait);
return rc;
}
static int llc_ui_wait_for_conn(struct sock *sk, int timeout)
{
- DECLARE_WAITQUEUE(wait, current);
- int rc;
+ DEFINE_WAIT(wait);
- add_wait_queue_exclusive(sk->sk_sleep, &wait);
- for (;;) {
- __set_current_state(TASK_INTERRUPTIBLE);
- rc = -EAGAIN;
- if (sk->sk_state == TCP_CLOSE)
- break;
- rc = 0;
- if (sk->sk_state != TCP_ESTABLISHED) {
- release_sock(sk);
- timeout = schedule_timeout(timeout);
- lock_sock(sk);
- } else
- break;
- rc = -ERESTARTSYS;
- if (signal_pending(current))
- break;
- rc = -EAGAIN;
- if (!timeout)
+ prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
+
+ while (sk->sk_state == TCP_SYN_SENT) {
+ release_sock(sk);
+ timeout = schedule_timeout(timeout);
+ lock_sock(sk);
+ if (signal_pending(current) || !timeout)
break;
+ prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
}
- __set_current_state(TASK_RUNNING);
- remove_wait_queue(sk->sk_sleep, &wait);
- return rc;
+ finish_wait(sk->sk_sleep, &wait);
+ return timeout;
}
static int llc_ui_wait_for_data(struct sock *sk, int timeout)
{
- DECLARE_WAITQUEUE(wait, current);
+ DEFINE_WAIT(wait);
int rc = 0;
- add_wait_queue_exclusive(sk->sk_sleep, &wait);
for (;;) {
- __set_current_state(TASK_INTERRUPTIBLE);
+ prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
if (sk->sk_shutdown & RCV_SHUTDOWN)
break;
- /*
- * Well, if we have backlog, try to process it now.
- */
- if (sk->sk_backlog.tail) {
- release_sock(sk);
- lock_sock(sk);
- }
- rc = 0;
- if (skb_queue_empty(&sk->sk_receive_queue)) {
- release_sock(sk);
- timeout = schedule_timeout(timeout);
- lock_sock(sk);
- } else
+ if (!skb_queue_empty(&sk->sk_receive_queue))
break;
+ release_sock(sk);
+ timeout = schedule_timeout(timeout);
+ lock_sock(sk);
rc = -ERESTARTSYS;
if (signal_pending(current))
break;
rc = -EAGAIN;
if (!timeout)
break;
+ rc = 0;
}
- __set_current_state(TASK_RUNNING);
- remove_wait_queue(sk->sk_sleep, &wait);
+ finish_wait(sk->sk_sleep, &wait);
return rc;
}
static int llc_ui_wait_for_busy_core(struct sock *sk, int timeout)
{
- DECLARE_WAITQUEUE(wait, current);
+ DEFINE_WAIT(wait);
struct llc_sock *llc = llc_sk(sk);
int rc;
- add_wait_queue_exclusive(sk->sk_sleep, &wait);
for (;;) {
- dprintk("%s: looping...\n", __FUNCTION__);
- __set_current_state(TASK_INTERRUPTIBLE);
+ prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
rc = -ENOTCONN;
if (sk->sk_shutdown & RCV_SHUTDOWN)
break;
rc = 0;
- if (llc_data_accept_state(llc->state) || llc->p_flag) {
- release_sock(sk);
- timeout = schedule_timeout(timeout);
- lock_sock(sk);
- } else
+ if (!llc_data_accept_state(llc->state) && !llc->p_flag)
break;
+ release_sock(sk);
+ timeout = schedule_timeout(timeout);
+ lock_sock(sk);
rc = -ERESTARTSYS;
if (signal_pending(current))
break;
@@ -590,8 +579,7 @@ static int llc_ui_wait_for_busy_core(struct sock *sk, int timeout)
if (!timeout)
break;
}
- __set_current_state(TASK_RUNNING);
- remove_wait_queue(sk->sk_sleep, &wait);
+ finish_wait(sk->sk_sleep, &wait);
return rc;
}
@@ -621,9 +609,11 @@ static int llc_ui_accept(struct socket *sock, struct socket *newsock, int flags)
sk->sk_state != TCP_LISTEN))
goto out;
/* wait for a connection to arrive. */
- rc = llc_ui_wait_for_data(sk, sk->sk_rcvtimeo);
- if (rc)
- goto out;
+ if (skb_queue_empty(&sk->sk_receive_queue)) {
+ rc = llc_ui_wait_for_data(sk, sk->sk_rcvtimeo);
+ if (rc)
+ goto out;
+ }
dprintk("%s: got a new connection on %02X\n", __FUNCTION__,
llc_sk(sk)->laddr.lsap);
skb = skb_dequeue(&sk->sk_receive_queue);
@@ -672,19 +662,16 @@ static int llc_ui_recvmsg(struct kiocb *iocb, struct socket *sock,
struct sockaddr_llc *uaddr = (struct sockaddr_llc *)msg->msg_name;
struct sk_buff *skb;
size_t copied = 0;
- int rc = -ENOMEM, timeout;
+ int rc = -ENOMEM;
int noblock = flags & MSG_DONTWAIT;
dprintk("%s: receiving in %02X from %02X\n", __FUNCTION__,
llc_sk(sk)->laddr.lsap, llc_sk(sk)->daddr.lsap);
lock_sock(sk);
- timeout = sock_rcvtimeo(sk, noblock);
- rc = llc_ui_wait_for_data(sk, timeout);
- if (rc) {
- dprintk("%s: llc_ui_wait_for_data failed recv "
- "in %02X from %02X\n", __FUNCTION__,
- llc_sk(sk)->laddr.lsap, llc_sk(sk)->daddr.lsap);
- goto out;
+ if (skb_queue_empty(&sk->sk_receive_queue)) {
+ rc = llc_ui_wait_for_data(sk, sock_rcvtimeo(sk, noblock));
+ if (rc)
+ goto out;
}
skb = skb_dequeue(&sk->sk_receive_queue);
if (!skb) /* shutdown */
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-18 11:23:20 +0000