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)