nvme-rdma: support up to 4 segments of inline data

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Allow up to 4 segments of inline data for NVMF WRITE operations. This
reduces latency for small WRITEs by removing the need for the target to
issue a READ WR for IB, or a REG_MR + READ WR chain for iWarp.

Also cap the inline segments used based on the limitations of the
device.

Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

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Steve Wise 2018-06-20 07:15:05 -07:00 • committed by Christoph Hellwig

parent 55eb942eda

commit 64a741c1ea

1 changed files with 27 additions and 11 deletions

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38

drivers/nvme/host/rdma.c

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