net/smc: move add link processing for new device into llc layer

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When a new ib device is up smc will send an add link invitation to the
peer if needed. This is currently done with rudimentary flow control.
Under high workload these add link invitations can disturb other llc
flows because they arrive unexpected. Fix this by integrating the
invitations into the normal llc event flow and handle them as a flow.
While at it, check for already assigned requests in the flow before
the new add link request is assigned.

Reviewed-by: Ursula Braun <ubraun@linux.ibm.com>
Fixes: 1f90a05d9f ("net/smc: add smcr_port_add() and smcr_link_up() processing")
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Karsten Graul 2020-07-18 15:06:14 +02:00 • committed by David S. Miller

parent 2ff0867851

commit c48254fa48

3 changed files with 58 additions and 80 deletions

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80

net/smc/smc_core.c

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56

net/smc/smc_llc.c

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2

net/smc/smc_llc.h

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