A logical problem. Post: 302407624

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rdma_post_ud_send

RDMA_POST_UD_SEND(3)					   Librdmacm Programmer's Manual				      RDMA_POST_UD_SEND(3)

NAME

       rdma_post_ud_send - post a work request to send a datagram.

SYNOPSIS

       #include <rdma/rdma_verbs.h>

       int  rdma_post_ud_send  (struct	rdma_cm_id *id, void *context, void *addr, size_t length, struct ibv_mr *mr, int flags, struct ibv_ah *ah,
       uint32_t remote_qpn);

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.

       ah	   An address handle describing the address of the remote node.

       remote_qpn  The number of the destination queue pair.

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 specified destination queue pair.

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 destination queue pair 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.

       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), rdma_reg_msgs(3) ibv_post_send(3), rdma_post_recv(3)

librdmacm							    2010-07-19						      RDMA_POST_UD_SEND(3)