rdma_post_send(3) [centos man page]

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

NAME

       rdma_post_send - post a work request to send a message.

SYNOPSIS

       #include <rdma/rdma_verbs.h>

       int rdma_post_send (struct rdma_cm_id *id, void *context, void *addr, size_t length, struct ibv_mr *mr, int flags);

ARGUMENTS

       id	   A reference to a communication identifier where the message buffer will be posted.

       context	   User-defined context associated with the request.

       addr	   The address of the memory buffer to post.

       length	   The length of the memory buffer.

       mr	   Optional registered memory region associated with the posted buffer.

       flags	   Optional flags used to control the send operation.

DESCRIPTION

       Posts a work request to the send queue of the queue pair associated with the rdma_cm_id.  The contents of the posted buffer will be sent to
       the remote peer of a connection.

RETURN VALUE

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

NOTES

       The user is responsible for ensuring that the remote peer has queued a receive request before issuing the send operations.  For a  list	of
       supported  flags,  see  ibv_post_send.	Unless	the send request is using inline data, the message buffer must have been registered before
       being posted, with the mr parameter referencing the registration.  The buffer must remain registered until the send completes.

       Send 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 send 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_sendv(3), rdma_post_recv(3)

librdmacm							    2010-07-19							 RDMA_POST_SEND(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)