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)