[PATCH net 2/9] net/smc: add receive timeout check
From: Ursula Braun <hidden>
Date: 2017-09-21 07:16:46
Also in:
linux-rdma, linux-s390
Subsystem:
networking [general], shared memory communications (smc) sockets, the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, D. Wythe, Dust Li, Sidraya Jayagond, Mahanta Jambigi, Linus Torvalds
From: Hans Wippel <redacted> The SMC receive function currently lacks a timeout check under the condition that no data were received and no data are available. This patch adds such a check. Signed-off-by: Hans Wippel <redacted> Signed-off-by: Ursula Braun <redacted> --- net/smc/smc_rx.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/net/smc/smc_rx.c b/net/smc/smc_rx.c
index b17a333e9bb0..3e631ae4b6b6 100644
--- a/net/smc/smc_rx.c
+++ b/net/smc/smc_rx.c@@ -148,6 +148,8 @@ int smc_rx_recvmsg(struct smc_sock *smc, struct msghdr *msg, size_t len, read_done = sock_intr_errno(timeo); break; } + if (!timeo) + return -EAGAIN; } if (!atomic_read(&conn->bytes_to_rcv)) {
--
2.13.5