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rdma_get_send_comp(3) [centos man page]

RDMA_GET_SEND_COMP(3)					   Librdmacm Programmer's Manual				     RDMA_GET_SEND_COMP(3)

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) librdmacm 2010-07-19 RDMA_GET_SEND_COMP(3)

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RDMA_POST_READ(3)					   Librdmacm Programmer's Manual					 RDMA_POST_READ(3)

NAME
rdma_post_read - post an RDMA read work request. SYNOPSIS
#include <rdma/rdma_verbs.h> int rdma_post_read (struct rdma_cm_id *id, void *context, void *addr, size_t length, struct ibv_mr *mr, int flags, uint64_t remote_addr, uint32_t rkey); ARGUMENTS
id A reference to a communication identifier where the request will be posted. context User-defined context associated with the request. addr The address of the local destination of the read request. length The length of the read operation. mr Registered memory region associated with the local buffer. flags Optional flags used to control the read operation. remote_addr The address of the remote registered memory to read from. rkey The registered memory key associated with the remote address. DESCRIPTION
Posts a work request to the send queue of the queue pair associated with the rdma_cm_id. The contents of the remote memory region will be read into the local data buffer. RETURN VALUE
Returns 0 on success, or -1 on error. If an error occurs, errno will be set to indicate the failure reason. NOTES
For a list of supported flags, see ibv_post_send. Both the remote and local data buffers must have been registered before the read is issued, and the buffers must remain registered until the read completes. Read operations may not be posted to an rdma_cm_id or the corresponding queue pair until it has been connected. The user-defined context associated with the read request will be returned to the user through the work completion wr_id, work request identifier, field. SEE ALSO
rdma_cm(7), rdma_connect(3), rdma_accept(3), ibv_post_send(3), rdma_post_readv(3), rdma_reg_read(3), rdma_reg_msgs(3) librdmacm 2010-07-19 RDMA_POST_READ(3)
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