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authorHans Wippel <hwippel@linux.vnet.ibm.com>2017-09-21 10:16:27 +0300
committerDavid S. Miller <davem@davemloft.net>2017-09-22 01:31:02 +0300
commit846e344eb7229018457d6d6fc1ab0cc0a167692f (patch)
tree9ab133d4307f2d273a571565d62e2dd7695c4e81 /net
parent09579ac803a3638344b8544b5940793d5358673e (diff)
downloadlinux-846e344eb7229018457d6d6fc1ab0cc0a167692f.tar.xz
net/smc: add receive timeout check
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 <hwippel@linux.vnet.ibm.com> Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/smc/smc_rx.c2
1 files changed, 2 insertions, 0 deletions
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)) {