rdma_get_send_comp(3) [debian 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)

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)