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iw_cxgb4: Support FW write completion WR

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To optimize NVME-oF READ IOPs, use a specialized WQE that combines
the RDMA WRITE and SEND_INV WR chain submitted by the NVME-oF target
driver.

This reduces uP overhead per NVME-oF IO, and results in over 10%
improvement in NVME-oF 4K READ IOPs.

Signed-off-by: Potnuri Bharat Teja <bharat@chelsio.com>
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Potnuri Bharat Teja 2018-08-02 11:33:04 +05:30 • committed by Jason Gunthorpe
commit 94245f4ad9
4 changed files with 183 additions and 2 deletions
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