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Commit 8cf4020b authored by Dennis Dalessandro's avatar Dennis Dalessandro Committed by Doug Ledford
Browse files

IB/rdmavt: Add post send and recv stubs 



This adds the post sned and recv function stubs.

Reviewed-by: default avatarMike Marciniszyn <mike.marciniszyn@intel.com>
Reviewed-by: default avatarIra Weiny <ira.weiny@intel.com>
Signed-off-by: default avatarDennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
parent cf16335a

drivers/infiniband/sw/rdmavt/qp.c

+62 −0
Original line number Diff line number Diff line
@@ -118,3 +118,65 @@ int rvt_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, 
{

	return -EOPNOTSUPP;

}



/**

 * rvt_post_receive - post a receive on a QP

 * @ibqp: the QP to post the receive on

 * @wr: the WR to post

 * @bad_wr: the first bad WR is put here

 *

 * This may be called from interrupt context.

 */

int rvt_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,

		  struct ib_recv_wr **bad_wr)

{

	/*

	 * When a packet arrives the driver needs to call up to rvt to process

	 * the packet. The UD, RC, UC processing will be done in rvt, however

	 * the driver should be able to override this if it so choses. Perhaps a

	 * set of function pointers set up at registration time.

	 */



	return -EOPNOTSUPP;

}



/**

 * rvt_post_send - post a send on a QP

 * @ibqp: the QP to post the send on

 * @wr: the list of work requests to post

 * @bad_wr: the first bad WR is put here

 *

 * This may be called from interrupt context.

 */

int rvt_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,

		  struct ib_send_wr **bad_wr)

{

	/*

	 * VT-DRIVER-API: do_send()

	 * Driver needs to have a do_send() call which is a single entry point

	 * to take an already formed packet and throw it out on the wire. Once

	 * the packet is sent the driver needs to make an upcall to rvt so the

	 * completion queue can be notified and/or any other outstanding

	 * work/book keeping can be finished.

	 *

	 * Note that there should also be a way for rvt to protect itself

	 * against hangs in the driver layer. If a send doesn't actually

	 * complete in a timely manor rvt needs to return an error event.

	 */



	return -EOPNOTSUPP;

}



/**

 * rvt_post_srq_receive - post a receive on a shared receive queue

 * @ibsrq: the SRQ to post the receive on

 * @wr: the list of work requests to post

 * @bad_wr: A pointer to the first WR to cause a problem is put here

 *

 * This may be called from interrupt context.

 */

int rvt_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr,

		      struct ib_recv_wr **bad_wr)

{

	return -EOPNOTSUPP;

}

drivers/infiniband/sw/rdmavt/qp.h

+6 −1
Original line number Diff line number Diff line
@@ -63,5 +63,10 @@ int rvt_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, 
int rvt_destroy_qp(struct ib_qp *ibqp);

int rvt_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,

		 int attr_mask, struct ib_qp_init_attr *init_attr);



int rvt_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,

		  struct ib_recv_wr **bad_wr);

int rvt_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,

		  struct ib_send_wr **bad_wr);

int rvt_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr,

		      struct ib_recv_wr **bad_wr);

#endif          /* DEF_RVTQP_H */

drivers/infiniband/sw/rdmavt/vt.c

+3 −0
Original line number Diff line number Diff line
@@ -232,6 +232,9 @@ int rvt_register_device(struct rvt_dev_info *rdi) 
	CHECK_DRIVER_OVERRIDE(rdi, modify_qp);

	CHECK_DRIVER_OVERRIDE(rdi, destroy_qp);

	CHECK_DRIVER_OVERRIDE(rdi, query_qp);

	CHECK_DRIVER_OVERRIDE(rdi, post_send);

	CHECK_DRIVER_OVERRIDE(rdi, post_recv);

	CHECK_DRIVER_OVERRIDE(rdi, post_srq_recv);



	/* Address Handle */

	CHECK_DRIVER_OVERRIDE(rdi, create_ah);