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net/smc: no cursor update send in state SMC_INIT 

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>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ursula Braun 2018-08-03 10:38:33 +02:00 committed by David S. Miller
parent f664e37dcc
commit 5607016cd1
1 changed files with 2 additions and 1 deletions
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3
net/smc/smc_cdc.c
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@ -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);
}
}