NAME

       rdma_post_recvv - post a work request to receive incoming messages.

SYNOPSIS

       #include <rdma/rdma_verbs.h>

       int rdma_post_recvv (struct rdma_cm_id *id, void *context, struct ibv_sge *sgl, int nsge);

ARGUMENTS

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

       context     User-defined context associated with the request.

       sgl         A scatter-gather list of memory buffers posted as a single request.

       nsge        The number of scatter-gather entries in the sgl array.

DESCRIPTION

       Posts  a  single work request to the receive queue of the queue pair associated with the rdma_cm_id.  The
       posted buffers will be queued to receive an incoming message sent by the remote peer.

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 receive is posted, and the total buffer space is large
       enough to contain all sent data before the peer  posts  the  corresponding  send  message.   The  message
       buffers  must  have been registered before being posted, and the buffers must remain registered until the
       receive completes.

       Messages may be posted to an rdma_cm_id only after a queue pair has been associated  with  it.   A  queue
       pair  is  bound  to  an  rdma_cm_id  after calling rdma_create_ep or rdma_create_qp, if the rdma_cm_id is
       allocated using rdma_create_id.

       The user-defined context associated with the receive request will be returned to  the  user  through  the
       work completion wr_id, work request identifier, field.

SEE ALSO

       rdma_cm(7),  rdma_create_id(3),  rdma_create_ep(3),  rdma_create_qp(3),  rdma_reg_read(3), ibv_reg_mr(3),
       ibv_dereg_mr(3), rdma_post_recv(3), rdma_post_send(3)