NAME¶
rdma_get_send_comp - retrieves a completed send, read, or write request.
SYNOPSIS¶
#include <rdma/rdma_verbs.h>
int rdma_get_send_comp (struct rdma_cm_id *id,
struct ibv_wc *wc);
ARGUMENTS¶
- id
- A reference to a communication identifier to check for completions.
- wc
- A reference to a work completion structure to fill in.
DESCRIPTION¶
Retrieves a completed work request for a send, RDMA read, or RDMA write
operation. Information about the completed request is returned through the wc
parameter, with the wr_id set to the context of the request. For details on
the work completion structure, see ibv_poll_cq.
RETURN VALUE¶
Returns the number of returned completions (0 or 1) on success, or -1 on error.
If an error occurs, errno will be set to indicate the failure reason.
NOTES¶
This calls polls the send completion queue associated with an rdma_cm_id. If a
completion is not found, the call blocks until a request completes. This call
should only be used on rdma_cm_id's that do not share CQs with other
rdma_cm_id's, and maintain separate CQs for sends and receive completions.
SEE ALSO¶
rdma_cm(7),
ibv_poll_cq(3),
rdma_get_recv_comp(3),
rdma_post_send(3),
rdma_post_read(3),
rdma_post_write(3)