qcacmn: Add support to flush rx packets for a vdev

When a particular vdev is deleted, the corresponding rx
packets which have been queued to the rx thread are not
flushed. Hence when such packets are submitted to the
network stack, the dev for this skb will be invalid,
since we have already freed the adapter.

Flush out the packets in the rx thread queues, before
deleting the vdev.

CRs-Fixed: 2543392
Change-Id: I2490d0f5ce965f62152613a17a59232521ca058f

dp/wifi3.0/dp_main.c

@@ -4869,6 +4869,7 @@ static void dp_vdev_register_wifi3(struct cdp_vdev *vdev_handle,
 	vdev->ctrl_vdev = ctrl_vdev;
 	vdev->osif_rx = txrx_ops->rx.rx;
 	vdev->osif_rx_stack = txrx_ops->rx.rx_stack;
+	vdev->osif_rx_flush = txrx_ops->rx.rx_flush;
 	vdev->osif_gro_flush = txrx_ops->rx.rx_gro_flush;
 	vdev->osif_rsim_rx_decap = txrx_ops->rx.rsim_rx_decap;
 	vdev->osif_get_key = txrx_ops->get_key;
@@ -5085,6 +5086,7 @@ static void dp_vdev_detach_wifi3(struct cdp_vdev *vdev_handle,
 
 	qdf_spin_lock_bh(&pdev->vdev_list_lock);
 	dp_tx_vdev_detach(vdev);
+	dp_rx_vdev_detach(vdev);
 	/* remove the vdev from its parent pdev's list */
 	TAILQ_REMOVE(&pdev->vdev_list, vdev, vdev_list_elem);
 	QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_INFO_HIGH,