From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ursula Braun Subject: [PATCH net 1/5] net/smc: abort CLC connection in smc_release Date: Mon, 12 Nov 2018 17:01:29 +0100 Message-ID: <20181112160133.16058-2-ubraun@linux.ibm.com> References: <20181112160133.16058-1-ubraun@linux.ibm.com> Return-path: In-Reply-To: <20181112160133.16058-1-ubraun@linux.ibm.com> Sender: netdev-owner@vger.kernel.org List-Archive: List-Post: To: davem@davemloft.net Cc: netdev@vger.kernel.org, linux-s390@vger.kernel.org, schwidefsky@de.ibm.com, heiko.carstens@de.ibm.com, raspl@linux.ibm.com, ubraun@linux.ibm.com List-ID: From: Hans Wippel 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 Signed-off-by: Ursula Braun --- net/smc/af_smc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c index 80e2119f1c70..84f67f601838 100644 --- a/net/smc/af_smc.c +++ b/net/smc/af_smc.c @@ -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; -- 2.16.4