Commit ed6e1c87 authored by Joshua Hay's avatar Joshua Hay Committed by Tony Nguyen
Browse files

idpf: implement IDC vport aux driver MTU change handler 



The only event an RDMA vport aux driver cares about right now is an MTU
change on its underlying vport. Implement and plumb the handler to
signal the pre MTU change event and post MTU change events to the RDMA
vport aux driver.

Reviewed-by: default avatarMadhu Chittim <madhu.chittim@intel.com>
Signed-off-by: default avatarJoshua Hay <joshua.a.hay@intel.com>
Signed-off-by: default avatarTatyana Nikolova <tatyana.e.nikolova@intel.com>
Signed-off-by: default avatarTony Nguyen <anthony.l.nguyen@intel.com>
parent bf86a012

drivers/net/ethernet/intel/idpf/idpf.h

+2 −0
Original line number Diff line number Diff line
@@ -894,5 +894,7 @@ int idpf_idc_init_aux_core_dev(struct idpf_adapter *adapter, 
void idpf_idc_deinit_core_aux_device(struct iidc_rdma_core_dev_info *cdev_info);

void idpf_idc_deinit_vport_aux_device(struct iidc_rdma_vport_dev_info *vdev_info);

void idpf_idc_issue_reset_event(struct iidc_rdma_core_dev_info *cdev_info);

void idpf_idc_vdev_mtu_event(struct iidc_rdma_vport_dev_info *vdev_info,

			     enum iidc_rdma_event_type event_type);



#endif /* !_IDPF_H_ */

drivers/net/ethernet/intel/idpf/idpf_idc.c

+31 −0
Original line number Diff line number Diff line
@@ -141,6 +141,37 @@ static int idpf_idc_init_aux_vport_dev(struct idpf_vport *vport) 
	return 0;

}



/**

 * idpf_idc_vdev_mtu_event - Function to handle IDC vport mtu change events

 * @vdev_info: IDC vport device info pointer

 * @event_type: type of event to pass to handler

 */

void idpf_idc_vdev_mtu_event(struct iidc_rdma_vport_dev_info *vdev_info,

			     enum iidc_rdma_event_type event_type)

{

	struct iidc_rdma_vport_auxiliary_drv *iadrv;

	struct iidc_rdma_event event = { };

	struct auxiliary_device *adev;



	if (!vdev_info)

		/* RDMA is not enabled */

		return;



	set_bit(event_type, event.type);



	device_lock(&vdev_info->adev->dev);

	adev = vdev_info->adev;

	if (!adev || !adev->dev.driver)

		goto unlock;

	iadrv = container_of(adev->dev.driver,

			     struct iidc_rdma_vport_auxiliary_drv,

			     adrv.driver);

	if (iadrv->event_handler)

		iadrv->event_handler(vdev_info, &event);

unlock:

	device_unlock(&vdev_info->adev->dev);

}



/**

 * idpf_core_adev_release - function to be mapped to aux dev's release op

 * @dev: pointer to device to free

drivers/net/ethernet/intel/idpf/idpf_lib.c

+8 −3
Original line number Diff line number Diff line
@@ -1925,6 +1925,9 @@ int idpf_initiate_soft_reset(struct idpf_vport *vport, 
		idpf_vport_calc_num_q_desc(new_vport);

		break;

	case IDPF_SR_MTU_CHANGE:

		idpf_idc_vdev_mtu_event(vport->vdev_info,

					IIDC_RDMA_EVENT_BEFORE_MTU_CHANGE);

		break;

	case IDPF_SR_RSC_CHANGE:

		break;

	default:
@@ -1969,9 +1972,7 @@ int idpf_initiate_soft_reset(struct idpf_vport *vport, 
	if (current_state == __IDPF_VPORT_UP)

		err = idpf_vport_open(vport);



	kfree(new_vport);



	return err;

	goto free_vport;



err_reset:

	idpf_send_add_queues_msg(vport, vport->num_txq, vport->num_complq,
@@ -1984,6 +1985,10 @@ int idpf_initiate_soft_reset(struct idpf_vport *vport, 
free_vport:

	kfree(new_vport);



	if (reset_cause == IDPF_SR_MTU_CHANGE)

		idpf_idc_vdev_mtu_event(vport->vdev_info,

					IIDC_RDMA_EVENT_AFTER_MTU_CHANGE);



	return err;

}