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authorStefano Panella <stefano.panella@csr.com>2008-11-04 09:06:31 -0500
committerDavid Vrabel <david.vrabel@csr.com>2008-11-04 10:53:29 -0500
commitc5995bd2819dc577d0b32b26be0836d16c977e24 (patch)
tree2cc5122623ace2571b7b3080b1b9a61f8282cfd4 /drivers/uwb/ie-rcv.c
parentf88518d122f1b007f47a46aff37ca2885126a923 (diff)
uwb: infrastructure for handling Relinquish Request IEs
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>
Diffstat (limited to 'drivers/uwb/ie-rcv.c')
-rw-r--r--drivers/uwb/ie-rcv.c55
1 files changed, 55 insertions, 0 deletions
diff --git a/drivers/uwb/ie-rcv.c b/drivers/uwb/ie-rcv.c
new file mode 100644
index 000000000000..917e6d78a798
--- /dev/null
+++ b/drivers/uwb/ie-rcv.c
@@ -0,0 +1,55 @@
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}