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Commit 73c7da3d authored by Arend Van Spriel's avatar Arend Van Spriel Committed by Johannes Berg
Browse files

cfg80211: add generic helper to check interface is running 



Add a helper using wdev to check if interface is running. This
deals with both non-netdev and netdev interfaces. In struct
wireless_dev replace 'p2p_started' and 'nan_started' by
'is_running' as those are mutually exclusive anyway, and unify
all the code to use wdev_running().

Signed-off-by: default avatarArend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
parent 8f205423

include/net/cfg80211.h

+10 −3
Original line number Diff line number Diff line
@@ -3781,8 +3781,8 @@ struct cfg80211_cached_keys; 
 * @beacon_interval: beacon interval used on this device for transmitting

 *	beacons, 0 when not valid

 * @address: The address for this device, valid only if @netdev is %NULL

 * @p2p_started: true if this is a P2P Device that has been started

 * @nan_started: true if this is a NAN interface that has been started

 * @is_running: true if this is a non-netdev device that has been started, e.g.

 *	the P2P Device.

 * @cac_started: true if DFS channel availability check has been started

 * @cac_start_time: timestamp (jiffies) when the dfs state was entered.

 * @cac_time_ms: CAC time in ms
@@ -3814,7 +3814,7 @@ struct wireless_dev { 


	struct mutex mtx;



	bool use_4addr, p2p_started, nan_started;

	bool use_4addr, is_running;



	u8 address[ETH_ALEN] __aligned(sizeof(u16));
@@ -3871,6 +3871,13 @@ static inline u8 *wdev_address(struct wireless_dev *wdev) 
	return wdev->address;

}



static inline bool wdev_running(struct wireless_dev *wdev)

{

	if (wdev->netdev)

		return netif_running(wdev->netdev);

	return wdev->is_running;

}



/**

 * wdev_priv - return wiphy priv from wireless_dev

 *

net/wireless/core.c

+4 −4
Original line number Diff line number Diff line
@@ -210,11 +210,11 @@ void cfg80211_stop_p2p_device(struct cfg80211_registered_device *rdev, 
	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_P2P_DEVICE))

		return;



	if (!wdev->p2p_started)

	if (!wdev_running(wdev))

		return;



	rdev_stop_p2p_device(rdev, wdev);

	wdev->p2p_started = false;

	wdev->is_running = false;



	rdev->opencount--;
@@ -233,11 +233,11 @@ void cfg80211_stop_nan(struct cfg80211_registered_device *rdev, 
	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_NAN))

		return;



	if (!wdev->nan_started)

	if (!wdev_running(wdev))

		return;



	rdev_stop_nan(rdev, wdev);

	wdev->nan_started = false;

	wdev->is_running = false;



	rdev->opencount--;

}

net/wireless/nl80211.c

+16 −37
Original line number Diff line number Diff line
@@ -10528,7 +10528,7 @@ static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info) 
	if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)

		return -EOPNOTSUPP;



	if (wdev->p2p_started)

	if (wdev_running(wdev))

		return 0;



	if (rfkill_blocked(rdev->rfkill))
@@ -10538,7 +10538,7 @@ static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info) 
	if (err)

		return err;



	wdev->p2p_started = true;

	wdev->is_running = true;

	rdev->opencount++;



	return 0;
@@ -10570,7 +10570,7 @@ static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info) 
	if (wdev->iftype != NL80211_IFTYPE_NAN)

		return -EOPNOTSUPP;



	if (wdev->nan_started)

	if (!wdev_running(wdev))

		return -EEXIST;



	if (rfkill_blocked(rdev->rfkill))
@@ -10593,7 +10593,7 @@ static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info) 
	if (err)

		return err;



	wdev->nan_started = true;

	wdev->is_running = true;

	rdev->opencount++;



	return 0;
@@ -10678,7 +10678,7 @@ static int nl80211_nan_add_func(struct sk_buff *skb, 
	if (wdev->iftype != NL80211_IFTYPE_NAN)

		return -EOPNOTSUPP;



	if (!wdev->nan_started)

	if (!wdev_running(wdev))

		return -ENOTCONN;



	if (!info->attrs[NL80211_ATTR_NAN_FUNC])
@@ -10915,7 +10915,7 @@ static int nl80211_nan_del_func(struct sk_buff *skb, 
	if (wdev->iftype != NL80211_IFTYPE_NAN)

		return -EOPNOTSUPP;



	if (!wdev->nan_started)

	if (!wdev_running(wdev))

		return -ENOTCONN;



	if (!info->attrs[NL80211_ATTR_COOKIE])
@@ -10943,7 +10943,7 @@ static int nl80211_nan_change_config(struct sk_buff *skb, 
	if (wdev->iftype != NL80211_IFTYPE_NAN)

		return -EOPNOTSUPP;



	if (!wdev->nan_started)

	if (!wdev_running(wdev))

		return -ENOTCONN;



	if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
@@ -11255,11 +11255,7 @@ static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info) 
				return -EINVAL;



			if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {

				if (wdev->netdev &&

				    !netif_running(wdev->netdev))

					return -ENETDOWN;

				if (!wdev->netdev && !wdev->p2p_started &&

				    !wdev->nan_started)

				if (!wdev_running(wdev))

					return -ENETDOWN;

			}
@@ -11422,10 +11418,7 @@ static int nl80211_vendor_cmd_dump(struct sk_buff *skb, 
			return -EINVAL;



		if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {

			if (wdev->netdev &&

			    !netif_running(wdev->netdev))

				return -ENETDOWN;

			if (!wdev->netdev && !wdev->p2p_started)

			if (!wdev_running(wdev))

				return -ENETDOWN;

		}

	}
@@ -11796,29 +11789,15 @@ static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb, 
			info->user_ptr[1] = wdev;

		}



		if (dev) {

		if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&

			    !netif_running(dev)) {

		    !wdev_running(wdev)) {

			if (rtnl)

				rtnl_unlock();

			return -ENETDOWN;

		}



		if (dev)

			dev_hold(dev);

		} else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {

			if (wdev->iftype == NL80211_IFTYPE_P2P_DEVICE &&

			    !wdev->p2p_started) {

				if (rtnl)

					rtnl_unlock();

				return -ENETDOWN;

			}

			if (wdev->iftype == NL80211_IFTYPE_NAN &&

			    !wdev->nan_started) {

				if (rtnl)

					rtnl_unlock();

				return -ENETDOWN;

			}

		}



		info->user_ptr[0] = rdev;

	}