IB/srp: Add fast registration support

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Certain HCA types (e.g. Connect-IB) and certain configurations (e.g.
ConnectX VF) support fast registration but not FMR. Hence add fast
registration support.

In function srp_rport_reconnect(), move the the srp_finish_req()
loop from after to before the srp_create_target_ib() call. This is
needed to avoid that srp_finish_req() tries to queue any
invalidation requests for rkeys associated with the old queue pair
on the newly allocated queue pair. Invoking srp_finish_req() before
the queue pair has been reallocated is safe since srp_claim_req()
handles completions correctly that arrive after srp_finish_req()
has been invoked.

Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Roland Dreier <roland@purestorage.com>

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Bart Van Assche 2014-05-20 15:08:34 +02:00 • committed by Roland Dreier

parent 52ede08f00

commit 5cfb17828d

2 changed files with 419 additions and 77 deletions

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421

drivers/infiniband/ulp/srp/ib_srp.c

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75

drivers/infiniband/ulp/srp/ib_srp.h

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