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https://github.com/edk2-porting/linux-next.git
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c947f7e1e3
This patch removes the mib lock. The new locking mechanism is to protect the mib values with the rtnl lock. Note that this isn't always necessary if we have an interface up the most mib values are readonly (e.g. address settings). With this behaviour we can remove locking in hotpath like frame parsing completely. It depends on context if we need to hold the rtnl lock or not, this makes the callbacks of ieee802154_mlme_ops unnecessary because these callbacks hols always the locks. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
228 lines
5.5 KiB
C
228 lines
5.5 KiB
C
/*
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* Copyright 2007-2012 Siemens AG
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*
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* 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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* Written by:
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* Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
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* Sergey Lapin <slapin@ossfans.org>
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* Maxim Gorbachyov <maxim.gorbachev@siemens.com>
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* Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
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*/
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#include <linux/if_arp.h>
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#include <net/mac802154.h>
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#include <net/ieee802154_netdev.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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void mac802154_dev_set_page_channel(struct net_device *dev, u8 page, u8 chan)
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{
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struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
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struct ieee802154_local *local = sdata->local;
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int res;
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ASSERT_RTNL();
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BUG_ON(dev->type != ARPHRD_IEEE802154);
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res = drv_set_channel(local, page, chan);
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if (res) {
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pr_debug("set_channel failed\n");
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} else {
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local->phy->current_channel = chan;
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local->phy->current_page = page;
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}
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}
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int mac802154_get_params(struct net_device *dev,
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struct ieee802154_llsec_params *params)
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{
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struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
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int res;
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BUG_ON(dev->type != ARPHRD_IEEE802154);
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mutex_lock(&sdata->sec_mtx);
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res = mac802154_llsec_get_params(&sdata->sec, params);
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mutex_unlock(&sdata->sec_mtx);
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return res;
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}
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int mac802154_set_params(struct net_device *dev,
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const struct ieee802154_llsec_params *params,
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int changed)
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{
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struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
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int res;
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BUG_ON(dev->type != ARPHRD_IEEE802154);
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mutex_lock(&sdata->sec_mtx);
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res = mac802154_llsec_set_params(&sdata->sec, params, changed);
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mutex_unlock(&sdata->sec_mtx);
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return res;
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}
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int mac802154_add_key(struct net_device *dev,
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const struct ieee802154_llsec_key_id *id,
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const struct ieee802154_llsec_key *key)
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{
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struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
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int res;
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BUG_ON(dev->type != ARPHRD_IEEE802154);
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mutex_lock(&sdata->sec_mtx);
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res = mac802154_llsec_key_add(&sdata->sec, id, key);
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mutex_unlock(&sdata->sec_mtx);
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return res;
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}
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int mac802154_del_key(struct net_device *dev,
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const struct ieee802154_llsec_key_id *id)
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{
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struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
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int res;
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BUG_ON(dev->type != ARPHRD_IEEE802154);
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mutex_lock(&sdata->sec_mtx);
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res = mac802154_llsec_key_del(&sdata->sec, id);
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mutex_unlock(&sdata->sec_mtx);
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return res;
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}
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int mac802154_add_dev(struct net_device *dev,
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const struct ieee802154_llsec_device *llsec_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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int res;
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BUG_ON(dev->type != ARPHRD_IEEE802154);
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mutex_lock(&sdata->sec_mtx);
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res = mac802154_llsec_dev_add(&sdata->sec, llsec_dev);
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mutex_unlock(&sdata->sec_mtx);
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return res;
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}
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int mac802154_del_dev(struct net_device *dev, __le64 dev_addr)
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{
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struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
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int res;
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BUG_ON(dev->type != ARPHRD_IEEE802154);
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mutex_lock(&sdata->sec_mtx);
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res = mac802154_llsec_dev_del(&sdata->sec, dev_addr);
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mutex_unlock(&sdata->sec_mtx);
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return res;
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}
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int mac802154_add_devkey(struct net_device *dev,
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__le64 device_addr,
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const struct ieee802154_llsec_device_key *key)
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{
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struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
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int res;
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BUG_ON(dev->type != ARPHRD_IEEE802154);
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mutex_lock(&sdata->sec_mtx);
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res = mac802154_llsec_devkey_add(&sdata->sec, device_addr, key);
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mutex_unlock(&sdata->sec_mtx);
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return res;
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}
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int mac802154_del_devkey(struct net_device *dev,
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__le64 device_addr,
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const struct ieee802154_llsec_device_key *key)
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{
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struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
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int res;
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BUG_ON(dev->type != ARPHRD_IEEE802154);
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mutex_lock(&sdata->sec_mtx);
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res = mac802154_llsec_devkey_del(&sdata->sec, device_addr, key);
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mutex_unlock(&sdata->sec_mtx);
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return res;
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}
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int mac802154_add_seclevel(struct net_device *dev,
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const struct ieee802154_llsec_seclevel *sl)
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{
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struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
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int res;
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BUG_ON(dev->type != ARPHRD_IEEE802154);
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mutex_lock(&sdata->sec_mtx);
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res = mac802154_llsec_seclevel_add(&sdata->sec, sl);
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mutex_unlock(&sdata->sec_mtx);
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return res;
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}
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int mac802154_del_seclevel(struct net_device *dev,
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const struct ieee802154_llsec_seclevel *sl)
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{
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struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
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int res;
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BUG_ON(dev->type != ARPHRD_IEEE802154);
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mutex_lock(&sdata->sec_mtx);
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res = mac802154_llsec_seclevel_del(&sdata->sec, sl);
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mutex_unlock(&sdata->sec_mtx);
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return res;
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}
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void mac802154_lock_table(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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BUG_ON(dev->type != ARPHRD_IEEE802154);
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mutex_lock(&sdata->sec_mtx);
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}
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void mac802154_get_table(struct net_device *dev,
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struct ieee802154_llsec_table **t)
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{
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struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
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BUG_ON(dev->type != ARPHRD_IEEE802154);
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*t = &sdata->sec.table;
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}
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void mac802154_unlock_table(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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BUG_ON(dev->type != ARPHRD_IEEE802154);
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mutex_unlock(&sdata->sec_mtx);
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}
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