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>
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7bea1ea7b4
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@ -113,7 +113,9 @@ static int ieee802154_nl_fill_iface(struct sk_buff *msg, u32 portid,
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if (ops->get_mac_params) {
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struct ieee802154_mac_params params;
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rtnl_lock();
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ops->get_mac_params(dev, ¶ms);
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rtnl_unlock();
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if (nla_put_s8(msg, IEEE802154_ATTR_TXPOWER,
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params.transmit_power) ||
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@ -348,8 +350,10 @@ int ieee802154_start_req(struct sk_buff *skb, struct genl_info *info)
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return -EINVAL;
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}
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rtnl_lock();
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ret = ieee802154_mlme_ops(dev)->start_req(dev, &addr, channel, page,
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bcn_ord, sf_ord, pan_coord, blx, coord_realign);
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rtnl_unlock();
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/* FIXME: add validation for unused parameters to be sane
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* for SoftMAC
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@ -497,6 +501,7 @@ int ieee802154_set_macparams(struct sk_buff *skb, struct genl_info *info)
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phy = dev->ieee802154_ptr->wpan_phy;
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get_device(&phy->dev);
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rtnl_lock();
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ops->get_mac_params(dev, ¶ms);
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if (info->attrs[IEEE802154_ATTR_TXPOWER])
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@ -524,6 +529,7 @@ int ieee802154_set_macparams(struct sk_buff *skb, struct genl_info *info)
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params.frame_retries = nla_get_s8(info->attrs[IEEE802154_ATTR_FRAME_RETRIES]);
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rc = ops->set_mac_params(dev, ¶ms);
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rtnl_unlock();
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wpan_phy_put(phy);
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dev_put(dev);
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@ -39,6 +39,8 @@ static int mac802154_mlme_start_req(struct net_device *dev,
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struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev);
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int rc = 0;
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ASSERT_RTNL();
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BUG_ON(addr->mode != IEEE802154_ADDR_SHORT);
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mac802154_dev_set_pan_id(dev, addr->pan_id);
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@ -75,7 +77,8 @@ static int mac802154_set_mac_params(struct net_device *dev,
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struct wpan_dev *wpan_dev = &sdata->wpan_dev;
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int ret;
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mutex_lock(&sdata->local->iflist_mtx);
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ASSERT_RTNL();
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/* PHY */
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wpan_dev->wpan_phy->transmit_power = params->transmit_power;
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wpan_dev->wpan_phy->cca_mode = params->cca_mode;
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@ -87,7 +90,6 @@ static int mac802154_set_mac_params(struct net_device *dev,
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wpan_dev->csma_retries = params->csma_retries;
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wpan_dev->frame_retries = params->frame_retries;
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wpan_dev->lbt = params->lbt;
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mutex_unlock(&sdata->local->iflist_mtx);
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if (local->hw.flags & IEEE802154_HW_TXPOWER) {
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ret = drv_set_tx_power(local, params->transmit_power);
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@ -116,7 +118,8 @@ static void mac802154_get_mac_params(struct net_device *dev,
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struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
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struct wpan_dev *wpan_dev = &sdata->wpan_dev;
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mutex_lock(&sdata->local->iflist_mtx);
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ASSERT_RTNL();
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/* PHY */
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params->transmit_power = wpan_dev->wpan_phy->transmit_power;
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params->cca_mode = wpan_dev->wpan_phy->cca_mode;
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@ -128,7 +131,6 @@ static void mac802154_get_mac_params(struct net_device *dev,
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params->csma_retries = wpan_dev->csma_retries;
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params->frame_retries = wpan_dev->frame_retries;
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params->lbt = wpan_dev->lbt;
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mutex_unlock(&sdata->local->iflist_mtx);
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}
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static struct ieee802154_llsec_ops mac802154_llsec_ops = {
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