From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ursula Braun Subject: [PATCH net-next 02/10] net/smc: add receive timeout check Date: Wed, 20 Sep 2017 13:58:05 +0200 Message-ID: <20170920115813.63745-3-ubraun@linux.vnet.ibm.com> References: <20170920115813.63745-1-ubraun@linux.vnet.ibm.com> Return-path: In-Reply-To: <20170920115813.63745-1-ubraun@linux.vnet.ibm.com> Sender: netdev-owner@vger.kernel.org To: davem@davemloft.net Cc: netdev@vger.kernel.org, linux-rdma@vger.kernel.org, linux-s390@vger.kernel.org, jwi@linux.vnet.ibm.com, schwidefsky@de.ibm.com, heiko.carstens@de.ibm.com, raspl@linux.vnet.ibm.com, ubraun@linux.vnet.ibm.com List-Id: linux-rdma@vger.kernel.org From: Hans Wippel 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 Signed-off-by: Ursula Braun --- 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