tree 00c90d84cc8cda7a370cffb5f81eade24bc79991
parent 047ca9ea884060a0122e875c3305afcac00dd8a6
author Noa Osherovich <noaos@mellanox.com> 1473943876 +0300
committer Doug Ledford <dledford@redhat.com> 1473963484 -0400

Add ibv_query_gid_type to support RoCE v2 UD traffic

Currently, libibverbs does not support UD traffic for RoCE v2 since
it can't differ between v1 and v2 GIDs (both have the same GID, only
the version is different). This means that GID index can't be
selected correctly.

This patch introduces ibv_query_gid_type helper function to be used
by libibverbs and its vendors to return GID type based on its GID
index by using the relevant sysfs.

Signed-off-by: Noa Osherovich <noaos@mellanox.com>
Reviewed-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>