Commit 133b8226 authored by Johannes Berg's avatar Johannes Berg Committed by John W. Linville
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mac80211: make master iface not wireless 



There's no need to register the master netdev with cfg80211,
in fact, this is quite dangerous and lead to having to add
checks for the master interface all over the config handlers.
This patch removes the "ieee80211_ptr" from the master iface
in favour of having a small netdev_priv() associated with
the master interface that stores the ieee80211_local pointer.
Because of this, a lot of code in the configuration handlers
can go away. To make this patch easier to verify I have also
removed a number of wiphy_priv() calls in favour of getting
the sdata first and then the local pointer from that.

Signed-off-by: default avatarJohannes Berg <johannes@sipsolutions.net>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 9e5e6c32

net/mac80211/cfg.c

+0 −59
Original line number Diff line number Diff line
@@ -82,7 +82,6 @@ static int ieee80211_change_iface(struct wiphy *wiphy, int ifindex, 
				  enum nl80211_iftype type, u32 *flags,

				  struct vif_params *params)

{

	struct ieee80211_local *local = wiphy_priv(wiphy);

	struct net_device *dev;

	struct ieee80211_sub_if_data *sdata;

	int ret;
@@ -95,9 +94,6 @@ static int ieee80211_change_iface(struct wiphy *wiphy, int ifindex, 
	if (!nl80211_type_check(type))

		return -EINVAL;



	if (dev == local->mdev)

		return -EOPNOTSUPP;



	sdata = IEEE80211_DEV_TO_SUB_IF(dev);



	ret = ieee80211_if_change_type(sdata, type);
@@ -120,16 +116,12 @@ static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev, 
			     u8 key_idx, u8 *mac_addr,

			     struct key_params *params)

{

	struct ieee80211_local *local = wiphy_priv(wiphy);

	struct ieee80211_sub_if_data *sdata;

	struct sta_info *sta = NULL;

	enum ieee80211_key_alg alg;

	struct ieee80211_key *key;

	int err;



	if (dev == local->mdev)

		return -EOPNOTSUPP;



	sdata = IEEE80211_DEV_TO_SUB_IF(dev);



	switch (params->cipher) {
@@ -174,14 +166,10 @@ static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev, 
static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,

			     u8 key_idx, u8 *mac_addr)

{

	struct ieee80211_local *local = wiphy_priv(wiphy);

	struct ieee80211_sub_if_data *sdata;

	struct sta_info *sta;

	int ret;



	if (dev == local->mdev)

		return -EOPNOTSUPP;



	sdata = IEEE80211_DEV_TO_SUB_IF(dev);



	rcu_read_lock();
@@ -222,7 +210,6 @@ static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev, 
			     void (*callback)(void *cookie,

					      struct key_params *params))

{

	struct ieee80211_local *local = wiphy_priv(wiphy);

	struct ieee80211_sub_if_data *sdata;

	struct sta_info *sta = NULL;

	u8 seq[6] = {0};
@@ -232,9 +219,6 @@ static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev, 
	u16 iv16;

	int err = -ENOENT;



	if (dev == local->mdev)

		return -EOPNOTSUPP;



	sdata = IEEE80211_DEV_TO_SUB_IF(dev);



	rcu_read_lock();
@@ -310,12 +294,8 @@ static int ieee80211_config_default_key(struct wiphy *wiphy, 
					struct net_device *dev,

					u8 key_idx)

{

	struct ieee80211_local *local = wiphy_priv(wiphy);

	struct ieee80211_sub_if_data *sdata;



	if (dev == local->mdev)

		return -EOPNOTSUPP;



	rcu_read_lock();



	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
@@ -496,13 +476,9 @@ static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata, 
static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev,

				struct beacon_parameters *params)

{

	struct ieee80211_local *local = wiphy_priv(wiphy);

	struct ieee80211_sub_if_data *sdata;

	struct beacon_data *old;



	if (dev == local->mdev)

		return -EOPNOTSUPP;



	sdata = IEEE80211_DEV_TO_SUB_IF(dev);



	if (sdata->vif.type != NL80211_IFTYPE_AP)
@@ -519,13 +495,9 @@ static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev, 
static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev,

				struct beacon_parameters *params)

{

	struct ieee80211_local *local = wiphy_priv(wiphy);

	struct ieee80211_sub_if_data *sdata;

	struct beacon_data *old;



	if (dev == local->mdev)

		return -EOPNOTSUPP;



	sdata = IEEE80211_DEV_TO_SUB_IF(dev);



	if (sdata->vif.type != NL80211_IFTYPE_AP)
@@ -541,13 +513,9 @@ static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev, 


static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev)

{

	struct ieee80211_local *local = wiphy_priv(wiphy);

	struct ieee80211_sub_if_data *sdata;

	struct beacon_data *old;



	if (dev == local->mdev)

		return -EOPNOTSUPP;



	sdata = IEEE80211_DEV_TO_SUB_IF(dev);



	if (sdata->vif.type != NL80211_IFTYPE_AP)
@@ -695,9 +663,6 @@ static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev, 
	struct ieee80211_sub_if_data *sdata;

	int err;



	if (dev == local->mdev || params->vlan == local->mdev)

		return -EOPNOTSUPP;



	/* Prevent a race with changing the rate control algorithm */

	if (!netif_running(dev))

		return -ENETDOWN;
@@ -752,9 +717,6 @@ static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev, 
	struct ieee80211_sub_if_data *sdata;

	struct sta_info *sta;



	if (dev == local->mdev)

		return -EOPNOTSUPP;



	sdata = IEEE80211_DEV_TO_SUB_IF(dev);



	if (mac) {
@@ -786,9 +748,6 @@ static int ieee80211_change_station(struct wiphy *wiphy, 
	struct sta_info *sta;

	struct ieee80211_sub_if_data *vlansdata;



	if (dev == local->mdev || params->vlan == local->mdev)

		return -EOPNOTSUPP;



	rcu_read_lock();



	/* XXX: get sta belonging to dev */
@@ -828,9 +787,6 @@ static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev, 
	struct sta_info *sta;

	int err;



	if (dev == local->mdev)

		return -EOPNOTSUPP;



	if (!netif_running(dev))

		return -ENETDOWN;
@@ -884,9 +840,6 @@ static int ieee80211_change_mpath(struct wiphy *wiphy, 
	struct mesh_path *mpath;

	struct sta_info *sta;



	if (dev == local->mdev)

		return -EOPNOTSUPP;



	if (!netif_running(dev))

		return -ENETDOWN;
@@ -958,13 +911,9 @@ static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev, 
			       u8 *dst, u8 *next_hop, struct mpath_info *pinfo)



{

	struct ieee80211_local *local = wiphy_priv(wiphy);

	struct ieee80211_sub_if_data *sdata;

	struct mesh_path *mpath;



	if (dev == local->mdev)

		return -EOPNOTSUPP;



	sdata = IEEE80211_DEV_TO_SUB_IF(dev);



	if (sdata->vif.type != NL80211_IFTYPE_MESH_POINT)
@@ -986,13 +935,9 @@ static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev, 
				 int idx, u8 *dst, u8 *next_hop,

				 struct mpath_info *pinfo)

{

	struct ieee80211_local *local = wiphy_priv(wiphy);

	struct ieee80211_sub_if_data *sdata;

	struct mesh_path *mpath;



	if (dev == local->mdev)

		return -EOPNOTSUPP;



	sdata = IEEE80211_DEV_TO_SUB_IF(dev);



	if (sdata->vif.type != NL80211_IFTYPE_MESH_POINT)
@@ -1015,13 +960,9 @@ static int ieee80211_change_bss(struct wiphy *wiphy, 
				struct net_device *dev,

				struct bss_parameters *params)

{

	struct ieee80211_local *local = wiphy_priv(wiphy);

	struct ieee80211_sub_if_data *sdata;

	u32 changed = 0;



	if (dev == local->mdev)

		return -EOPNOTSUPP;



	sdata = IEEE80211_DEV_TO_SUB_IF(dev);



	if (sdata->vif.type != NL80211_IFTYPE_AP)

net/mac80211/debugfs_sta.c

+1 −2
Original line number Diff line number Diff line
@@ -173,8 +173,7 @@ static ssize_t sta_agg_status_write(struct file *file, 
		const char __user *user_buf, size_t count, loff_t *ppos)

{

	struct sta_info *sta = file->private_data;

	struct net_device *dev = sta->sdata->dev;

	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);

	struct ieee80211_local *local = sta->sdata->local;

	struct ieee80211_hw *hw = &local->hw;

	u8 *da = sta->sta.addr;

	static int tid_static_tx[16] = {0, 0, 0, 0, 0, 0, 0, 0,

net/mac80211/ieee80211_i.h

+4 −0
Original line number Diff line number Diff line
@@ -573,6 +573,10 @@ enum { 
/* maximum number of hardware queues we support. */

#define QD_MAX_QUEUES (IEEE80211_MAX_AMPDU_QUEUES + IEEE80211_MAX_QUEUES)



struct ieee80211_master_priv {

	struct ieee80211_local *local;

};



struct ieee80211_local {

	/* embed the driver visible part.

	 * don't cast (use the static inlines below), but we keep

net/mac80211/main.c

+10 −9
Original line number Diff line number Diff line
@@ -106,7 +106,8 @@ static const struct header_ops ieee80211_header_ops = { 


static int ieee80211_master_open(struct net_device *dev)

{

	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);

	struct ieee80211_master_priv *mpriv = netdev_priv(dev);

	struct ieee80211_local *local = mpriv->local;

	struct ieee80211_sub_if_data *sdata;

	int res = -EOPNOTSUPP;
@@ -128,7 +129,8 @@ static int ieee80211_master_open(struct net_device *dev) 


static int ieee80211_master_stop(struct net_device *dev)

{

	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);

	struct ieee80211_master_priv *mpriv = netdev_priv(dev);

	struct ieee80211_local *local = mpriv->local;

	struct ieee80211_sub_if_data *sdata;



	/* we hold the RTNL here so can safely walk the list */
@@ -141,7 +143,8 @@ static int ieee80211_master_stop(struct net_device *dev) 


static void ieee80211_master_set_multicast_list(struct net_device *dev)

{

	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);

	struct ieee80211_master_priv *mpriv = netdev_priv(dev);

	struct ieee80211_local *local = mpriv->local;



	ieee80211_configure_filter(local);

}
@@ -787,7 +790,7 @@ int ieee80211_register_hw(struct ieee80211_hw *hw) 
	int result;

	enum ieee80211_band band;

	struct net_device *mdev;

	struct wireless_dev *mwdev;

	struct ieee80211_master_priv *mpriv;



	/*

	 * generic code guarantees at least one band,
@@ -829,16 +832,14 @@ int ieee80211_register_hw(struct ieee80211_hw *hw) 
	if (hw->queues < 4)

		hw->ampdu_queues = 0;



	mdev = alloc_netdev_mq(sizeof(struct wireless_dev),

	mdev = alloc_netdev_mq(sizeof(struct ieee80211_master_priv),

			       "wmaster%d", ether_setup,

			       ieee80211_num_queues(hw));

	if (!mdev)

		goto fail_mdev_alloc;



	mwdev = netdev_priv(mdev);

	mdev->ieee80211_ptr = mwdev;

	mwdev->wiphy = local->hw.wiphy;



	mpriv = netdev_priv(mdev);

	mpriv->local = local;

	local->mdev = mdev;



	ieee80211_rx_bss_list_init(local);

net/mac80211/mesh.c

+1 −1
Original line number Diff line number Diff line
@@ -351,7 +351,7 @@ static void ieee80211_mesh_path_timer(unsigned long data) 
	struct ieee80211_sub_if_data *sdata =

		(struct ieee80211_sub_if_data *) data;

	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;

	struct ieee80211_local *local = wdev_priv(&sdata->wdev);

	struct ieee80211_local *local = sdata->local;



	queue_work(local->hw.workqueue, &ifmsh->work);

}

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