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net/smc: abort CLC connection in smc_release 

In case of a non-blocking SMC socket, the initial CLC handshake is
performed over a blocking TCP connection in a worker. If the SMC socket
is released, smc_release has to wait for the blocking CLC socket
operations (e.g., kernel_connect) inside the worker.

This patch aborts a CLC connection when the respective non-blocking SMC
socket is released to avoid waiting on socket operations or timeouts.

Signed-off-by: Hans Wippel <hwippel@linux.ibm.com>
Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Hans Wippel 2018-11-20 16:46:39 +01:00 committed by David S. Miller
parent 1e2b1046b5
commit f07920ad9c
1 changed files with 2 additions and 0 deletions
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2
net/smc/af_smc.c
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@ -127,6 +127,8 @@ static int smc_release(struct socket *sock)
smc = smc_sk(sk);
/* cleanup for a dangling non-blocking connect */
if (smc->connect_info && sk->sk_state == SMC_INIT)
tcp_abort(smc->clcsock->sk, ECONNABORTED);
flush_work(&smc->connect_work);
kfree(smc->connect_info);
smc->connect_info = NULL;