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Commit 6492cdf3 authored by Faisal Latif's avatar Faisal Latif Committed by Roland Dreier
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RDMA/nes: CM connection setup/teardown rework 



Major rework of CM connection setup/teardown.  We had a number of issues
with MPI applications not starting/terminating properly over time.
With these changes we were able to run longer on larger clusters.

* Remove memory allocation from nes_connect() and nes_cm_connect().
* Fix mini_cm_dec_refcnt_listen() when destroying listener.
* Remove unnecessary code from schedule_nes_timer() and nes_cm_timer_tick().
* Functionalize mini_cm_recv_pkt() and process_packet().
* Clean up cm_node->ref_count usage.
* Reuse skbs if available.

Signed-off-by: default avatarFaisal Latif <flatif@neteffect.com>
Signed-off-by: default avatarRoland Dreier <rolandd@cisco.com>
parent fb2e405f

drivers/infiniband/hw/nes/nes.c

+1 −3
Original line number Diff line number Diff line
@@ -276,6 +276,7 @@ static void nes_cqp_rem_ref_callback(struct nes_device *nesdev, struct nes_cqp_r 
	}

	nes_free_resource(nesadapter, nesadapter->allocated_qps, nesqp->hwqp.qp_id);



	nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = NULL;

	kfree(nesqp->allocated_buffer);



}
@@ -289,7 +290,6 @@ void nes_rem_ref(struct ib_qp *ibqp) 
	struct nes_qp *nesqp;

	struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);

	struct nes_device *nesdev = nesvnic->nesdev;

	struct nes_adapter *nesadapter = nesdev->nesadapter;

	struct nes_hw_cqp_wqe *cqp_wqe;

	struct nes_cqp_request *cqp_request;

	u32 opcode;
@@ -303,8 +303,6 @@ void nes_rem_ref(struct ib_qp *ibqp) 
	}



	if (atomic_dec_and_test(&nesqp->refcount)) {

		nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = NULL;



		/* Destroy the QP */

		cqp_request = nes_get_cqp_request(nesdev);

		if (cqp_request == NULL) {