From: Ursula Braun <ubraun@linux.ibm.com>
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, linux-kernel@vger.kernel.org
Subject: [PATCH net 1/1] net/smc: no cursor update send in state SMC_INIT
Date: Fri, 3 Aug 2018 10:38:33 +0200 [thread overview]
Message-ID: <20180803083833.51029-1-ubraun@linux.ibm.com> (raw)
If a writer blocked condition is received without data, the current
consumer cursor is immediately sent. Servers could already receive this
condition in state SMC_INIT without finished tx-setup. This patch
avoids sending a consumer cursor update in this case.
Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
---
net/smc/smc_cdc.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/net/smc/smc_cdc.c b/net/smc/smc_cdc.c
index a7e8d63fc8ae..9bde1e4ca288 100644
--- a/net/smc/smc_cdc.c
+++ b/net/smc/smc_cdc.c
@@ -233,7 +233,8 @@ static void smc_cdc_msg_recv_action(struct smc_sock *smc,
/* force immediate tx of current consumer cursor, but
* under send_lock to guarantee arrival in seqno-order
*/
- smc_tx_sndbuf_nonempty(conn);
+ if (smc->sk.sk_state != SMC_INIT)
+ smc_tx_sndbuf_nonempty(conn);
}
}
--
2.16.4
next reply other threads:[~2018-08-03 8:39 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-03 8:38 Ursula Braun [this message]
2018-08-04 20:10 ` [PATCH net 1/1] net/smc: no cursor update send in state SMC_INIT David Miller
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