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IBV_POST_SRQ_RECV(3)	Libibverbs Programmer's	Manual	  IBV_POST_SRQ_RECV(3)

NAME
       ibv_post_srq_recv  - post a list	of work	requests (WRs) to a shared re-
       ceive queue (SRQ)

SYNOPSIS
       #include	<infiniband/verbs.h>

       int ibv_post_srq_recv(struct ibv_srq *srq, struct ibv_recv_wr *wr,
			     struct ibv_recv_wr	**bad_wr);

DESCRIPTION
       ibv_post_srq_recv() posts the linked list of work requests (WRs)	start-
       ing with	wr to the shared receive queue (SRQ) srq.  It stops processing
       WRs from	this list at the first failure (that can be  detected  immedi-
       ately  while  requests  are  being posted), and returns this failing WR
       through bad_wr.

       The argument wr is  an  ibv_recv_wr  struct,  as	 defined  in  <infini-
       band/verbs.h>.

       struct ibv_recv_wr {
	       uint64_t		       wr_id;	  /* User defined WR ID	*/
	       struct ibv_recv_wr     *next;	  /* Pointer to	next WR	in list, NULL if last WR */
	       struct ibv_sge	      *sg_list;	  /* Pointer to	the s/g	array */
	       int		       num_sge;	  /* Size of the s/g array */
       };

       struct ibv_sge {
	       uint64_t		       addr;	  /* Start address of the local	memory buffer */
	       uint32_t		       length;	  /* Length of the buffer */
	       uint32_t		       lkey;	  /* Key of the	local Memory Region */
       };

RETURN VALUE
       ibv_post_srq_recv()  returns  0	on  success,  or the value of errno on
       failure (which indicates	the failure reason).

NOTES
       The buffers used	by a WR	can only be safely reused after	WR the request
       is  fully  executed  and	 a work	completion has been retrieved from the
       corresponding completion	queue (CQ).

       If a WR is being	posted to a UD QP, the Global Routing Header (GRH)  of
       the  incoming  message will be placed in	the first 40 bytes of the buf-
       fer(s) in the scatter list.  If no GRH is present in the	incoming  mes-
       sage,  then  the	first bytes will be undefined.	This means that	in all
       cases, the actual data of the incoming message will start at an	offset
       of 40 bytes into	the buffer(s) in the scatter list.

SEE ALSO
       ibv_create_qp(3), ibv_post_send(3), ibv_post_recv(3), ibv_poll_cq(3)

AUTHORS
       Dotan Barak <dotanba@gmail.com>

libibverbs			  2006-10-31		  IBV_POST_SRQ_RECV(3)

NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | NOTES | SEE ALSO | AUTHORS

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