mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-11-01 17:08:10 +00:00
c5995bd281
The structures and event handler needed to handle Relinish Request IEs received from neighbors. Nothing is done with these IEs yet. Signed-off-by: Stefano Panella <stefano.panella@csr.com> Signed-off-by: David Vrabel <david.vrabel@csr.com>
55 lines
1.6 KiB
C
55 lines
1.6 KiB
C
/*
|
|
* Ultra Wide Band
|
|
* IE Received notification handling.
|
|
*
|
|
* Copyright (C) 2008 Cambridge Silicon Radio Ltd.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License version
|
|
* 2 as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <linux/errno.h>
|
|
#include <linux/module.h>
|
|
#include <linux/device.h>
|
|
#include <linux/bitmap.h>
|
|
#include "uwb-internal.h"
|
|
|
|
/*
|
|
* Process an incoming IE Received notification.
|
|
*/
|
|
int uwbd_evt_handle_rc_ie_rcv(struct uwb_event *evt)
|
|
{
|
|
int result = -EINVAL;
|
|
struct device *dev = &evt->rc->uwb_dev.dev;
|
|
struct uwb_rc_evt_ie_rcv *iercv;
|
|
size_t iesize;
|
|
|
|
/* Is there enough data to decode it? */
|
|
if (evt->notif.size < sizeof(*iercv)) {
|
|
dev_err(dev, "IE Received notification: Not enough data to "
|
|
"decode (%zu vs %zu bytes needed)\n",
|
|
evt->notif.size, sizeof(*iercv));
|
|
goto error;
|
|
}
|
|
iercv = container_of(evt->notif.rceb, struct uwb_rc_evt_ie_rcv, rceb);
|
|
iesize = le16_to_cpu(iercv->wIELength);
|
|
|
|
dev_dbg(dev, "IE received, element ID=%d\n", iercv->IEData[0]);
|
|
|
|
if (iercv->IEData[0] == UWB_RELINQUISH_REQUEST_IE) {
|
|
dev_warn(dev, "unhandled Relinquish Request IE\n");
|
|
}
|
|
|
|
return 0;
|
|
error:
|
|
return result;
|
|
}
|