RDMA/bnxt_re: Add firmware stall check detection

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Every completion will update last_seen value in the unit of jiffies.
last_seen field will be used to know if firmware is alive and
is useful to detect firmware stall.

Non blocking interface __wait_for_resp will have logic to detect
firmware stall. After every 10 second interval if __wait_for_resp
has not received completion for a given command it will check for
firmware stall condition.

If current jiffies is greater than last_seen
jiffies + RCFW_FW_STALL_TIMEOUT_SEC * HZ, it is a firmware stall.

Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com>
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Link: https://lore.kernel.org/r/1686308514-11996-12-git-send-email-selvin.xavier@broadcom.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>

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This commit is contained in:

Kashyap Desai 2023-06-09 04:01:48 -07:00 • committed by Leon Romanovsky

parent 691eb7c611

commit b6c7256688

2 changed files with 39 additions and 10 deletions

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44

drivers/infiniband/hw/bnxt_re/qplib_rcfw.c

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5

drivers/infiniband/hw/bnxt_re/qplib_rcfw.h

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