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Shell Programming and Scripting
Simple Script
Post 302189710 by era on Sunday 27th of April 2008 03:17:53 PM
04-27-2008
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LEARN ABOUT CENTOS
rdma_post_recvv
RDMA_POST_RECVV(3) Librdmacm Programmer's Manual RDMA_POST_RECVV(3) 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) librdmacm 2010-07-19 RDMA_POST_RECVV(3)