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authorGuy Levi <guyle@mellanox.com>2018-11-26 08:15:50 +0200
committerJason Gunthorpe <jgg@mellanox.com>2018-11-29 17:12:13 -0700
commit34f4c9554d8b2a7d2deb9503e9373b598ee3279f (patch)
tree28b9f7c04c3a0f12c7fa795ec5cd66c812b83971 /drivers/infiniband/core
parentIB/mlx5: Use fragmented SRQ's buffer for in-kernel users (diff)
downloadlinux-dev-34f4c9554d8b2a7d2deb9503e9373b598ee3279f.tar.xz
linux-dev-34f4c9554d8b2a7d2deb9503e9373b598ee3279f.zip
IB/mlx5: Use fragmented QP's buffer for in-kernel users
The current implementation of create QP requires contiguous memory, such a requirement is problematic once the memory is fragmented or the system is low in memory, it causes failures in dma_zalloc_coherent(). This patch takes advantage of the new mlx5_core API which allocates a fragmented buffer. This makes the QP creation much more resilient to memory fragmentation. Data-path code was adapted to the fact that WQEs can cross buffers. We also use the opportunity to fix some cosmetic legacy coding convention errors which were in the feature scope. Signed-off-by: Guy Levi <guyle@mellanox.com> Reviewed-by: Majd Dibbiny <majd@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'drivers/infiniband/core')
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