mirror of https://gitee.com/openkylin/linux.git
56 lines
1.6 KiB
C
56 lines
1.6 KiB
C
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/*
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* Ultra Wide Band
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* IE Received notification handling.
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*
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* Copyright (C) 2008 Cambridge Silicon Radio Ltd.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License version
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* 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <linux/errno.h>
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#include <linux/module.h>
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#include <linux/device.h>
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#include <linux/bitmap.h>
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#include "uwb-internal.h"
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/*
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* Process an incoming IE Received notification.
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*/
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int uwbd_evt_handle_rc_ie_rcv(struct uwb_event *evt)
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{
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int result = -EINVAL;
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struct device *dev = &evt->rc->uwb_dev.dev;
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struct uwb_rc_evt_ie_rcv *iercv;
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size_t iesize;
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/* Is there enough data to decode it? */
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if (evt->notif.size < sizeof(*iercv)) {
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dev_err(dev, "IE Received notification: Not enough data to "
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"decode (%zu vs %zu bytes needed)\n",
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evt->notif.size, sizeof(*iercv));
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goto error;
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}
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iercv = container_of(evt->notif.rceb, struct uwb_rc_evt_ie_rcv, rceb);
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iesize = le16_to_cpu(iercv->wIELength);
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dev_dbg(dev, "IE received, element ID=%d\n", iercv->IEData[0]);
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if (iercv->IEData[0] == UWB_RELINQUISH_REQUEST_IE) {
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dev_warn(dev, "unhandled Relinquish Request IE\n");
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}
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return 0;
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error:
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return result;
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}
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