nvme-rdma: limit the maximal queue size for RDMA controllers

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Corrent limit of 1024 isn't valid for some of the RDMA based ctrls. In
case the target expose a cap of larger amount of entries (e.g. 1024),
the initiator may fail to create a QP with this size. Thus limit to a
value that works for all RDMA adapters.

Future general solution should use RDMA/core API to calculate this size
according to device capabilities and number of WRs needed per NVMe IO
request.

Signed-off-by: Max Gurtovoy <mgurtovoy@nvidia.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

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Max Gurtovoy 2021-09-23 00:55:35 +03:00 • committed by Christoph Hellwig

parent 2351ead99c

commit 44c3c6257e

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include/linux/nvme-rdma.h

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