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RDMA/uverbs: Expose the new GID query API to user space

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Expose the query GID table and entry API to user space by adding two new
methods and method handlers to the device object.

This API provides a faster way to query a GID table using single call and
will be used in libibverbs to improve current approach that requires
multiple calls to open, close and read multiple sysfs files for a single
GID table entry.

Link: https://lore.kernel.org/r/20200923165015.2491894-5-leon@kernel.org
Signed-off-by: Avihai Horon <avihaih@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
Avihai Horon
2020-09-23 19:50:15 +03:00
committed by Jason Gunthorpe
parent c4b4d548fa
commit 9f85cbe50a
4 changed files with 220 additions and 4 deletions
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6
include/rdma/ib_verbs.h
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@@ -138,9 +138,9 @@ union ib_gid {
extern union ib_gid zgid;
enum ib_gid_type {
IB_GID_TYPE_IB = 0,
IB_GID_TYPE_ROCE = 1,
IB_GID_TYPE_ROCE_UDP_ENCAP = 2,
IB_GID_TYPE_IB = IB_UVERBS_GID_TYPE_IB,
IB_GID_TYPE_ROCE = IB_UVERBS_GID_TYPE_ROCE_V1,
IB_GID_TYPE_ROCE_UDP_ENCAP = IB_UVERBS_GID_TYPE_ROCE_V2,
IB_GID_TYPE_SIZE
};