net/smc: unlock LGR pending lock earlier for SMC-D

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If SMC client and server connections are both established at the same
time, smc_connect_ism() cannot send a CLC confirm message while
smc_listen_work() is waiting for one due to lock contention. This can
result in timeouts in smc_clc_wait_msg() and failed SMC connections.

In case of SMC-D, the LGR pending lock is not needed while
smc_listen_work() is waiting for the CLC confirm message. So, this patch
releases the lock earlier for SMC-D to avoid the locking issue.

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>

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Hans Wippel 2019-02-07 15:56:17 +01:00 • committed by David S. Miller

parent a225d2cd88

commit 62c7139f3e

1 changed files with 9 additions and 5 deletions

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net/smc/af_smc.c

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