1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Ultra Wide Band 4 * IE Received notification handling. 5 * 6 * Copyright (C) 2008 Cambridge Silicon Radio Ltd. 7 */ 8 9 #include <linux/errno.h> 10 #include <linux/module.h> 11 #include <linux/device.h> 12 #include <linux/bitmap.h> 13 #include "uwb-internal.h" 14 15 /* 16 * Process an incoming IE Received notification. 17 */ uwbd_evt_handle_rc_ie_rcv(struct uwb_event * evt)18int uwbd_evt_handle_rc_ie_rcv(struct uwb_event *evt) 19 { 20 int result = -EINVAL; 21 struct device *dev = &evt->rc->uwb_dev.dev; 22 struct uwb_rc_evt_ie_rcv *iercv; 23 24 /* Is there enough data to decode it? */ 25 if (evt->notif.size < sizeof(*iercv)) { 26 dev_err(dev, "IE Received notification: Not enough data to " 27 "decode (%zu vs %zu bytes needed)\n", 28 evt->notif.size, sizeof(*iercv)); 29 goto error; 30 } 31 iercv = container_of(evt->notif.rceb, struct uwb_rc_evt_ie_rcv, rceb); 32 33 dev_dbg(dev, "IE received, element ID=%d\n", iercv->IEData[0]); 34 35 if (iercv->IEData[0] == UWB_RELINQUISH_REQUEST_IE) { 36 dev_warn(dev, "unhandled Relinquish Request IE\n"); 37 } 38 39 return 0; 40 error: 41 return result; 42 } 43