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9830c62a0b
This patch adds support for setting short address via nl802154 framework. Also added a comment because a 0xffff seems to be valid address that we don't have a short address. This is a valid setting but we need more checks in upper layers to don't allow this address as source address. Also the current netlink interface doesn't allow to set the short_addr to 0xffff. Same for the 0xfffe short address which describes a not allocated short address. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
118 lines
3.1 KiB
C
118 lines
3.1 KiB
C
/* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2
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* 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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* Authors:
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* Alexander Aring <aar@pengutronix.de>
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*
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* Based on: net/mac80211/cfg.c
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*/
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#include <net/rtnetlink.h>
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#include <net/cfg802154.h>
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#include "ieee802154_i.h"
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#include "driver-ops.h"
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#include "cfg.h"
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static struct net_device *
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ieee802154_add_iface_deprecated(struct wpan_phy *wpan_phy,
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const char *name, int type)
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{
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struct ieee802154_local *local = wpan_phy_priv(wpan_phy);
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struct net_device *dev;
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rtnl_lock();
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dev = ieee802154_if_add(local, name, NULL, type);
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rtnl_unlock();
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return dev;
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}
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static void ieee802154_del_iface_deprecated(struct wpan_phy *wpan_phy,
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struct net_device *dev)
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{
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struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
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ieee802154_if_remove(sdata);
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}
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static int
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ieee802154_set_channel(struct wpan_phy *wpan_phy, const u8 page,
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const u8 channel)
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{
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struct ieee802154_local *local = wpan_phy_priv(wpan_phy);
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int ret;
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ASSERT_RTNL();
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/* check if phy support this setting */
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if (!(wpan_phy->channels_supported[page] & BIT(channel)))
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return -EINVAL;
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ret = drv_set_channel(local, page, channel);
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if (!ret) {
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wpan_phy->current_page = page;
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wpan_phy->current_channel = channel;
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}
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return ret;
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}
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static int ieee802154_set_pan_id(struct wpan_phy *wpan_phy,
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struct wpan_dev *wpan_dev, const u16 pan_id)
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{
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ASSERT_RTNL();
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/* TODO
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* I am not sure about to check here on broadcast pan_id.
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* Broadcast is a valid setting, comment from 802.15.4:
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* If this value is 0xffff, the device is not associated.
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*
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* This could useful to simple deassociate an device.
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*/
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if (pan_id == IEEE802154_PAN_ID_BROADCAST)
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return -EINVAL;
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wpan_dev->pan_id = cpu_to_le16(pan_id);
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return 0;
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}
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static int
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ieee802154_set_short_addr(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
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const u16 short_addr)
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{
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ASSERT_RTNL();
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/* TODO
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* I am not sure about to check here on broadcast short_addr.
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* Broadcast is a valid setting, comment from 802.15.4:
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* A value of 0xfffe indicates that the device has
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* associated but has not been allocated an address. A
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* value of 0xffff indicates that the device does not
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* have a short address.
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*
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* I think we should allow to set these settings but
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* don't allow to allow socket communication with it.
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*/
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if (short_addr == IEEE802154_ADDR_SHORT_UNSPEC ||
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short_addr == IEEE802154_ADDR_SHORT_BROADCAST)
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return -EINVAL;
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wpan_dev->short_addr = cpu_to_le16(short_addr);
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return 0;
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}
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const struct cfg802154_ops mac802154_config_ops = {
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.add_virtual_intf_deprecated = ieee802154_add_iface_deprecated,
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.del_virtual_intf_deprecated = ieee802154_del_iface_deprecated,
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.set_channel = ieee802154_set_channel,
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.set_pan_id = ieee802154_set_pan_id,
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.set_short_addr = ieee802154_set_short_addr,
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};
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