RDMA/mlx5: Split the WR setup out of mlx5_ib_update_xlt()

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The memory allocation is quite complicated, and makes this function hard
to understand. Refactor things so that a function call sets up the WR, SG,
DMA mapping and buffer, further splitting that into buffer and DMA/wr.

This also slightly changes the buffer allocation logic to try an order 0
page allocation (with OOM warnings on) before going to the emergency page.

Link: https://lore.kernel.org/r/20201026132314.1336717-4-leon@kernel.org
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

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This commit is contained in:

Jason Gunthorpe 2020-10-26 15:23:12 +02:00

parent f22c30aa6d

commit 8010d74b99

3 changed files with 128 additions and 69 deletions

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6

drivers/infiniband/hw/mlx5/main.c

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2

drivers/infiniband/hw/mlx5/mlx5_ib.h

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189

drivers/infiniband/hw/mlx5/mr.c

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