plucky (3) rdma_post_send.3.gz

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)