NAME

       rdma_post_write - post an RDMA write work request.

SYNOPSIS

       #include <rdma/rdma_verbs.h>

       int  rdma_post_write  (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 local address of the source of the write request.

       length      The length of the write operation.

       mr          Optional memory region associated with the local buffer.

       flags       Optional flags used to control the write operation.

       remote_addr The address of the remote registered memory to write into.

       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 local data buffer will be written into the remote memory region.

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.  Unless inline data  is  specified,  the
       local  data  buffer  must  have been registered before the write is issued, and the buffer
       must remain registered until the write  completes.   The  remote  buffer  must  always  be
       registered.

       Write  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 write 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_writev(3),
       rdma_reg_write(3), rdma_reg_msgs(3)