1/* 2 * Ultra Wide Band 3 * IE Received notification handling. 4 * 5 * Copyright (C) 2008 Cambridge Silicon Radio Ltd. 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License version 9 * 2 as published by the Free Software Foundation. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program. If not, see <http://www.gnu.org/licenses/>. 18 */ 19 20#include <linux/errno.h> 21#include <linux/module.h> 22#include <linux/device.h> 23#include <linux/bitmap.h> 24#include "uwb-internal.h" 25 26/* 27 * Process an incoming IE Received notification. 28 */ 29int uwbd_evt_handle_rc_ie_rcv(struct uwb_event *evt) 30{ 31 int result = -EINVAL; 32 struct device *dev = &evt->rc->uwb_dev.dev; 33 struct uwb_rc_evt_ie_rcv *iercv; 34 size_t iesize; 35 36 /* Is there enough data to decode it? */ 37 if (evt->notif.size < sizeof(*iercv)) { 38 dev_err(dev, "IE Received notification: Not enough data to " 39 "decode (%zu vs %zu bytes needed)\n", 40 evt->notif.size, sizeof(*iercv)); 41 goto error; 42 } 43 iercv = container_of(evt->notif.rceb, struct uwb_rc_evt_ie_rcv, rceb); 44 iesize = le16_to_cpu(iercv->wIELength); 45 46 dev_dbg(dev, "IE received, element ID=%d\n", iercv->IEData[0]); 47 48 if (iercv->IEData[0] == UWB_RELINQUISH_REQUEST_IE) { 49 dev_warn(dev, "unhandled Relinquish Request IE\n"); 50 } 51 52 return 0; 53error: 54 return result; 55} 56