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