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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/uapi/rdma/ib_user_ioctl_verbs.h
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@@ -251,6 +251,12 @@ enum rdma_driver_id {
RDMA_DRIVER_SIW,
};
enum ib_uverbs_gid_type {
IB_UVERBS_GID_TYPE_IB,
IB_UVERBS_GID_TYPE_ROCE_V1,
IB_UVERBS_GID_TYPE_ROCE_V2,
};
struct ib_uverbs_gid_entry {
__aligned_u64 gid[2];
__u32 gid_index;