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ieee802154: netlink add rtnl lock 

This patch adds rtnl lock hold mechanism while accessing wpan_dev
attributes. Furthermore these attributes should be protected by rtnl
lock and netif_running only.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Alexander Aring 2014-11-09 08:36:57 +01:00 committed by Marcel Holtmann
parent b03c9cccfa
commit 7bea1ea7b4
2 changed files with 12 additions and 4 deletions
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6
net/ieee802154/nl-mac.c
View File

@ -113,7 +113,9 @@ static int ieee802154_nl_fill_iface(struct sk_buff *msg, u32 portid,
if (ops->get_mac_params) {
struct ieee802154_mac_params params;
rtnl_lock();
ops->get_mac_params(dev, &params);
rtnl_unlock();
if (nla_put_s8(msg, IEEE802154_ATTR_TXPOWER,
params.transmit_power) ||
@ -348,8 +350,10 @@ int ieee802154_start_req(struct sk_buff *skb, struct genl_info *info)
return -EINVAL;
}
rtnl_lock();
ret = ieee802154_mlme_ops(dev)->start_req(dev, &addr, channel, page,
bcn_ord, sf_ord, pan_coord, blx, coord_realign);
rtnl_unlock();
/* FIXME: add validation for unused parameters to be sane
* for SoftMAC
@ -497,6 +501,7 @@ int ieee802154_set_macparams(struct sk_buff *skb, struct genl_info *info)
phy = dev->ieee802154_ptr->wpan_phy;
get_device(&phy->dev);
rtnl_lock();
ops->get_mac_params(dev, &params);
if (info->attrs[IEEE802154_ATTR_TXPOWER])
@ -524,6 +529,7 @@ int ieee802154_set_macparams(struct sk_buff *skb, struct genl_info *info)
params.frame_retries = nla_get_s8(info->attrs[IEEE802154_ATTR_FRAME_RETRIES]);
rc = ops->set_mac_params(dev, &params);
rtnl_unlock();
wpan_phy_put(phy);
dev_put(dev);

10
net/mac802154/mac_cmd.c
View File

@ -39,6 +39,8 @@ static int mac802154_mlme_start_req(struct net_device *dev,
struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev);
int rc = 0;
ASSERT_RTNL();
BUG_ON(addr->mode != IEEE802154_ADDR_SHORT);
mac802154_dev_set_pan_id(dev, addr->pan_id);
@ -75,7 +77,8 @@ static int mac802154_set_mac_params(struct net_device *dev,
struct wpan_dev *wpan_dev = &sdata->wpan_dev;
int ret;
mutex_lock(&sdata->local->iflist_mtx);
ASSERT_RTNL();
/* PHY */
wpan_dev->wpan_phy->transmit_power = params->transmit_power;
wpan_dev->wpan_phy->cca_mode = params->cca_mode;
@ -87,7 +90,6 @@ static int mac802154_set_mac_params(struct net_device *dev,
wpan_dev->csma_retries = params->csma_retries;
wpan_dev->frame_retries = params->frame_retries;
wpan_dev->lbt = params->lbt;
mutex_unlock(&sdata->local->iflist_mtx);
if (local->hw.flags & IEEE802154_HW_TXPOWER) {
ret = drv_set_tx_power(local, params->transmit_power);
@ -116,7 +118,8 @@ static void mac802154_get_mac_params(struct net_device *dev,
struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
struct wpan_dev *wpan_dev = &sdata->wpan_dev;
mutex_lock(&sdata->local->iflist_mtx);
ASSERT_RTNL();
/* PHY */
params->transmit_power = wpan_dev->wpan_phy->transmit_power;
params->cca_mode = wpan_dev->wpan_phy->cca_mode;
@ -128,7 +131,6 @@ static void mac802154_get_mac_params(struct net_device *dev,
params->csma_retries = wpan_dev->csma_retries;
params->frame_retries = wpan_dev->frame_retries;
params->lbt = wpan_dev->lbt;
mutex_unlock(&sdata->local->iflist_mtx);
}
static struct ieee802154_llsec_ops mac802154_llsec_ops = {