IB/core: Enhance ib_map_mr_sg()

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The SRP initiator allows to set max_sectors to a value that exceeds
the largest amount of data that can be mapped at once with an mlx4
HCA using fast registration and a page size of 4 KB. Hence modify
ib_map_mr_sg() such that it can map partial sg-elements. If an
sg-element has been mapped partially, let the caller know
which fraction has been mapped by adjusting *sg_offset.

Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Tested-by: Laurence Oberman <loberman@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Doug Ledford <dledford@redhat.com>

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Bart Van Assche 2016-05-12 10:49:15 -07:00 • committed by Doug Ledford

parent f83b2561a6

commit 9aa8b3217e

18 changed files with 47 additions and 27 deletions

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include/rdma/ib_verbs.h

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