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author | 2008-11-04 14:06:31 +0000 | |
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committer | 2008-11-04 15:53:29 +0000 | |
commit | c5995bd2819dc577d0b32b26be0836d16c977e24 (patch) | |
tree | 2cc5122623ace2571b7b3080b1b9a61f8282cfd4 /drivers/uwb/ie-rcv.c | |
parent | wusb: remove unused #include <version.h> (diff) | |
download | linux-c5995bd2819dc577d0b32b26be0836d16c977e24.tar.gz linux-c5995bd2819dc577d0b32b26be0836d16c977e24.tar.bz2 linux-c5995bd2819dc577d0b32b26be0836d16c977e24.zip |
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.c | 55 |
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 @@ +/* + * 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; +} |