summaryrefslogtreecommitdiffstats
path: root/net/dccp/proto.c
diff options
context:
space:
mode:
Diffstat (limited to 'net/dccp/proto.c')
-rw-r--r--net/dccp/proto.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/net/dccp/proto.c b/net/dccp/proto.c
index 0225bdacd3b..a7f345c8d0d 100644
--- a/net/dccp/proto.c
+++ b/net/dccp/proto.c
@@ -52,6 +52,9 @@ struct inet_hashinfo __cacheline_aligned dccp_hashinfo = {
EXPORT_SYMBOL_GPL(dccp_hashinfo);
+/* the maximum queue length for tx in packets. 0 is no limit */
+int sysctl_dccp_tx_qlen __read_mostly = 5;
+
void dccp_set_state(struct sock *sk, const int state)
{
const int oldstate = sk->sk_state;
@@ -645,6 +648,13 @@ int dccp_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
return -EMSGSIZE;
lock_sock(sk);
+
+ if (sysctl_dccp_tx_qlen &&
+ (sk->sk_write_queue.qlen >= sysctl_dccp_tx_qlen)) {
+ rc = -EAGAIN;
+ goto out_release;
+ }
+
timeo = sock_sndtimeo(sk, noblock);
/*