date: 2020-01-22 footer: libibverbs header: “Libibverbs Programmer's Manual” layout: page license: ‘Licensed under the OpenIB.org BSD license (FreeBSD Variant) - See COPYING.md’ section: 3 title: IBV_QUERY_ECE

NAME

ibv_query_ece - query ECE options.

SYNOPSIS

#include <infiniband/verbs.h>

int ibv_query_ece(struct ibv_qp *qp, struct ibv_ece *ece);

DESCRIPTION

ibv_query_ece() query ECE options.

Return to the user current ECE state for the QP.

ARGUMENTS

qp : The queue pair (QP) associated with the ECE options.

ece Argument

: The ECE values.

struct ibv_ece {
	uint32_t vendor_id;
	uint32_t options;
	uint32_t comp_mask;
};

vendor_id : Unique identifier of the provider vendor on the network. The providers will set IEEE OUI here to distinguish itself in non-homogenius network.

options : Provider specific attributes which are supported.

comp_mask : Bitmask specifying what fields in the structure are valid.

RETURN VALUE

ibv_query_ece() returns 0 when the call was successful, or the errno value which indicates the failure reason.

EOPNOTSUPP : libibverbs or provider driver doesn't support the ibv_set_ece() verb.

EINVAL : In one of the following: o The QP is invalid. o The ECE options are invalid.

AUTHOR

Leon Romanovsky leonro@mellanox.com