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uwb: infrastructure for handling Relinquish Request IEs

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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>
This commit is contained in:
Stefano Panella 2008-11-04 14:06:31 +00:00 • committed by David Vrabel
parent f88518d122
commit c5995bd281
5 changed files with 89 additions and 0 deletions
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1
drivers/uwb/Makefile
View file

@ -13,6 +13,7 @@ uwb-objs := \
drp-ie.o \
est.o \
ie.o \
ie-rcv.o \
lc-dev.o \
lc-rc.o \
neh.o \

55
drivers/uwb/ie-rcv.c Normal file
View file

@ -0,0 +1,55 @@
/*
* 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;
}

1
drivers/uwb/uwb-internal.h
View file

@ -167,6 +167,7 @@ extern void uwbd_event_queue(struct uwb_event *);
void uwbd_flush(struct uwb_rc *rc);
/* UWB event handlers */
extern int uwbd_evt_handle_rc_ie_rcv(struct uwb_event *);
extern int uwbd_evt_handle_rc_beacon(struct uwb_event *);
extern int uwbd_evt_handle_rc_beacon_size(struct uwb_event *);
extern int uwbd_evt_handle_rc_bpoie_change(struct uwb_event *);

4
drivers/uwb/uwbd.c
View file

@ -104,6 +104,10 @@ struct uwbd_event {
/** Table of handlers for and properties of the UWBD Radio Control Events */
static
struct uwbd_event uwbd_events[] = {
[UWB_RC_EVT_IE_RCV] = {
.handler = uwbd_evt_handle_rc_ie_rcv,
.name = "IE_RECEIVED"
},
[UWB_RC_EVT_BEACON] = {
.handler = uwbd_evt_handle_rc_beacon,
.name = "BEACON_RECEIVED"