NAME

       ibv_query_gid_ex - Query an InfiniBand port’s GID table entry

SYNOPSIS

              #include <infiniband/verbs.h>

              int ibv_query_gid_ex(struct ibv_context *context,
                                   uint32_t port_num,
                                   uint32_t gid_index,
                                   struct ibv_gid_entry *entry,
                                   uint32_t flags);

DESCRIPTION

       ibv_query_gid_ex()  returns  the  GID  entry  at  entry for gid_index of port port_num for
       device context context.

ARGUMENTS

       context
              The context of the device to query.

       port_num
              The number of port to query its GID table.

       gid_index
              The index of the GID table entry to query.

       ## entry Argument
              An ibv_gid_entry struct, as defined in <infiniband/verbs.h>.

                     struct ibv_gid_entry {
                         union ibv_gid gid;
                         uint32_t gid_index;
                         uint32_t port_num;
                         uint32_t gid_type;
                         uint32_t ndev_ifindex;
                     };

              gid

                  The GID entry.

              gid_index

                  The GID table index of this entry.

              port_num

                  The port number that this GID belongs to.

              gid_type

                  enum ibv_gid_type, can be one of IBV_GID_TYPE_IB, IBV_GID_TYPE_ROCE_V1 or IBV_GID_TYPE_ROCE_V2.

              ndev_ifindex

                  The interface index of the net device associated with this GID.
                  It is 0 if there is no net device associated with it.

       flags  Extra fields to query post ndev_ifindex, for now must be 0.

RETURN VALUE

       ibv_query_gid_ex() returns 0 on success or errno value on error.

ERRORS

       ENODATA
              gid_index is within the GID table size of port port_num but there  is  no  data  in
              this index.

SEE ALSO

       ibv_open_device(3),     ibv_query_device(3),     ibv_query_pkey(3),     ibv_query_port(3),
       ibv_query_gid_table(3)

AUTHOR

       Parav Pandit <parav@nvidia.com>