diff options
| author | Sjur Braendeland <sjur.brandeland@stericsson.com> | 2010-05-21 02:16:10 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-05-23 23:57:42 -0700 |
| commit | ca6a09f25cde1d2d86f8e821cf69f4f650c30dbf (patch) | |
| tree | 133c7b35294fd501fbf1732b2256a91ead7fbe16 /net | |
| parent | 638e628a600a5c542d46dfb06771cf9c229ef5f3 (diff) | |
| download | lwn-ca6a09f25cde1d2d86f8e821cf69f4f650c30dbf.tar.gz lwn-ca6a09f25cde1d2d86f8e821cf69f4f650c30dbf.zip | |
caif: Bugfix - Poll can't return POLLHUP while connecting.
Discovered bug when testing async connect.
While connecting poll should not return POLLHUP,
but POLLOUT when connected.
Also fixed the sysfs flow-control-counters.
Signed-off-by: Sjur Braendeland <sjur.brandeland@stericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/caif/caif_socket.c | 21 |
1 files changed, 6 insertions, 15 deletions
diff --git a/net/caif/caif_socket.c b/net/caif/caif_socket.c index 77e99568acda..732897d64f41 100644 --- a/net/caif/caif_socket.c +++ b/net/caif/caif_socket.c @@ -138,7 +138,7 @@ void caif_flow_ctrl(struct sock *sk, int mode) { struct caifsock *cf_sk; cf_sk = container_of(sk, struct caifsock, sk); - if (cf_sk->layer.dn) + if (cf_sk->layer.dn && cf_sk->layer.dn->modemcmd) cf_sk->layer.dn->modemcmd(cf_sk->layer.dn, mode); } @@ -162,9 +162,8 @@ int caif_queue_rcv_skb(struct sock *sk, struct sk_buff *skb) atomic_read(&cf_sk->sk.sk_rmem_alloc), sk_rcvbuf_lowwater(cf_sk)); set_rx_flow_off(cf_sk); - if (cf_sk->layer.dn) - cf_sk->layer.dn->modemcmd(cf_sk->layer.dn, - CAIF_MODEMCMD_FLOW_OFF_REQ); + dbfs_atomic_inc(&cnt.num_rx_flow_off); + caif_flow_ctrl(sk, CAIF_MODEMCMD_FLOW_OFF_REQ); } err = sk_filter(sk, skb); @@ -175,9 +174,8 @@ int caif_queue_rcv_skb(struct sock *sk, struct sk_buff *skb) trace_printk("CAIF: %s():" " sending flow OFF due to rmem_schedule\n", __func__); - if (cf_sk->layer.dn) - cf_sk->layer.dn->modemcmd(cf_sk->layer.dn, - CAIF_MODEMCMD_FLOW_OFF_REQ); + dbfs_atomic_inc(&cnt.num_rx_flow_off); + caif_flow_ctrl(sk, CAIF_MODEMCMD_FLOW_OFF_REQ); } skb->dev = NULL; skb_set_owner_r(skb, sk); @@ -285,16 +283,13 @@ static void caif_check_flow_release(struct sock *sk) { struct caifsock *cf_sk = container_of(sk, struct caifsock, sk); - if (cf_sk->layer.dn == NULL || cf_sk->layer.dn->modemcmd == NULL) - return; if (rx_flow_is_on(cf_sk)) return; if (atomic_read(&sk->sk_rmem_alloc) <= sk_rcvbuf_lowwater(cf_sk)) { dbfs_atomic_inc(&cnt.num_rx_flow_on); set_rx_flow_on(cf_sk); - cf_sk->layer.dn->modemcmd(cf_sk->layer.dn, - CAIF_MODEMCMD_FLOW_ON_REQ); + caif_flow_ctrl(sk, CAIF_MODEMCMD_FLOW_ON_REQ); } } /* @@ -1018,10 +1013,6 @@ static unsigned int caif_poll(struct file *file, (sk->sk_shutdown & RCV_SHUTDOWN)) mask |= POLLIN | POLLRDNORM; - /* Connection-based need to check for termination and startup */ - if (sk->sk_state == CAIF_DISCONNECTED) - mask |= POLLHUP; - /* * we set writable also when the other side has shut down the * connection. This prevents stuck sockets. |