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Phonet: restore flow control credits when sending fails 

Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Rémi Denis-Courmont 2010-08-30 12:57:03 +00:00 committed by David S. Miller
parent 1f0f638856
commit 1a98214fee
1 changed files with 5 additions and 1 deletions
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6
net/phonet/pep.c
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@ -834,6 +834,7 @@ static int pipe_skb_send(struct sock *sk, struct sk_buff *skb)
{
struct pep_sock *pn = pep_sk(sk);
struct pnpipehdr *ph;
int err;
if (pn_flow_safe(pn->tx_fc) &&
!atomic_add_unless(&pn->tx_credits, -1, 0)) {
@ -852,7 +853,10 @@ static int pipe_skb_send(struct sock *sk, struct sk_buff *skb)
ph->message_id = PNS_PIPE_DATA;
ph->pipe_handle = pn->pipe_handle;
return pn_skb_send(sk, skb, &pipe_srv);
err = pn_skb_send(sk, skb, &pipe_srv);
if (err && pn_flow_safe(pn->tx_fc))
atomic_inc(&pn->tx_credits);
return err;
}
static int pep_sendmsg(struct kiocb *iocb, struct sock *sk,