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mlx5dv_query_qp_lag_port - Query the lag port information of a given QP

NAME  SYNOPSIS  DESCRIPTION  ARGUMENTS  RETURN VALUE  SEE ALSO  AUTHOR 

NAME

mlx5dv_query_qp_lag_port - Query the lag port information of a given QP

SYNOPSIS

#include <infiniband/mlx5dv.h>


int mlx5dv_query_qp_lag_port(struct ibv_qp *qp, uint8_t *port_num,
                 uint8_t *active_port_num);

DESCRIPTION

This API returns the configured and active port num of a given QP in mlx5 devices.

The active port num indicates which port that the QP sends traffic out in a LAG configuration.

The num_lag_ports field of struct mlx5dv_context greater than 1 means LAG is supported on this device.

ARGUMENTS

qp

The ibv_qp object to issue the action on.

port_num

The configured port num of the QP.

active_port_num

The current port num of the QP, which may different from the configured value because of the bonding status.

RETURN VALUE

0 on success; EOPNOTSUPP if not in LAG mode, or other errno value on other failures.

SEE ALSO

mlx5dv_modify_qp_lag_port(3)

AUTHOR

Aharon Landau <[email protected]>


Updated 2026-06-01 - jenkler.se | uex.se