rdma_get_send_comp

Retrieves a completed request for send, read, or write operation.

Syntax

#include <rdma/rdma_cma.h>
int rdma_get_send_comp (struct rdma_cm_id *id, struct ibv_wc *wc);

Description

Retrieves a completed work request for a send, RDMA read, or RDMA write operation. Information about the completed request is returned by using the wc parameter, which has the wr_id identifier set to the context of the request.

Notes: The rdma_get_send_comp operation polls the send completion queue that is associated with an rdma_cm_id identifier. If a completion request is not found, the rdma_get_send_comp call blocks the queue until a request is completed. The rdma_get_send_comp call must be used on rdma_cm_id identifiers that do not share change queues (CQs) with other rdma_cm_id identifiers, and the function maintains separate CQs for send and receive completion requests.

Parameters

Item	Description
id	Specifies a reference to a communication identifier to check for completions.
wc	Specifies a reference to a work completion structure that must be filled.

Return Values

Returns 0 on success, or -1 on error. If an error occurs, then errno is set to indicate the reason for failure.