i40iw: Ignore LLP_DOUBT_REACHABILITY AE

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The LLP_DOUBT_REACHABILITY Asynchronous Event (AE) is an early
warning of a connection issue. It is followed by LLP_TOO_MANY_RETRIES
AE, if the retransmit threshold is reached and recovery is not possible
for the connection.

Currently we terminate the connection on receiving the
LLP_DOUBT_REACHABILITY AE. Ignore this AE and
terminate the connection only on LLP_TOO_MANY_RETRIES AE.

This improves the user experience on cable disconnect/reconnect
scenario while running iWARP traffic. On cable disconnect,
the QP traffic is paused and the user has a larger and more
reasonable timeout within which if the cable is reconnected,
traffic can continue.

Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

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Shiraz Saleem 2017-12-22 09:47:00 -06:00 • committed by Jason Gunthorpe

parent df8b13a1b2

commit 756f77d216

1 changed files with 2 additions and 1 deletions

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drivers/infiniband/hw/i40iw/i40iw_hw.c

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