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NAME | SYNOPSIS | DESCRIPTION | ARGUMENTS | RETURN VALUE | ERRORS | SEE ALSO | AUTHOR | COLOPHON |
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IBV_QUERY_GID_EX(3) Libibverbs Programmer’s Manual IBV_QUERY_GID_EX(3)
ibv_query_gid_ex - Query an InfiniBand port’s GID table entry
#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);
ibv_query_gid_ex() returns the GID entry at entry for gid_index of
port port_num for device context context.
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.
ibv_query_gid_ex() returns 0 on success or errno value on error.
ENODATA
gid_index is within the GID table size of port port_num but
there is no data in this index.
ibv_open_device(3), ibv_query_device(3), ibv_query_pkey(3),
ibv_query_port(3), ibv_query_gid_table(3)
Parav Pandit ⟨[email protected]⟩
This page is part of the rdma-core (RDMA Core Userspace Libraries
and Daemons) project. Information about the project can be found
at ⟨https://github.com/linux-rdma/rdma-core⟩. If you have a bug
report for this manual page, send it to
[email protected]. This page was obtained from the
project's upstream Git repository
⟨https://github.com/linux-rdma/rdma-core.git⟩ on 2025-08-11. (At
that time, the date of the most recent commit that was found in
the repository was 2025-08-04.) If you discover any rendering
problems in this HTML version of the page, or you believe there is
a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
[email protected]
libibverbs 2020-04-24 IBV_QUERY_GID_EX(3)
Pages that refer to this page: ibv_query_gid_table(3)
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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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