On 19-10-2016 6:47, Luca Coelho wrote:
> From: Andrei Otcheretianski <andrei.otcheretianski@xxxxxxxxx>
>
> Allow vendor commands that require WIPHY_VENDOR_CMD_NEED_RUNNING flag, to
> be sent to NAN interface.
>
> Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@xxxxxxxxx>
> Signed-off-by: Luca Coelho <luciano.coelho@xxxxxxxxx>
> ---
> net/wireless/nl80211.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
> index e48b9c3..fcf5b4f 100644
> --- a/net/wireless/nl80211.c
> +++ b/net/wireless/nl80211.c
> @@ -11258,7 +11258,8 @@ static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
> if (wdev->netdev &&
> !netif_running(wdev->netdev))
> return -ENETDOWN;
> - if (!wdev->netdev && !wdev->p2p_started)
> + if (!wdev->netdev && !wdev->p2p_started &&
> + !wdev->nan_started)
> return -ENETDOWN;
Seeing this patch flying by, my itch became unbearable so I cooked up
the patch below. Please consider this an RFC and let me know your thoughts.
Regards,
Arend
---
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 2bbbcc3..0010e5a 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -3781,8 +3781,8 @@ static inline struct wiphy *wiphy_new(const struct
cfg80211_ops *ops,
* @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, eg.
+ * like 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_is_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
*
diff --git a/net/wireless/core.c b/net/wireless/core.c
index f433f15..088ba44 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -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_is_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_is_running(wdev))
return;
rdev_stop_nan(rdev, wdev);
- wdev->nan_started = false;
+ wdev->is_running = false;
rdev->opencount--;
}
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index fcf5b4f..e37801e 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -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_is_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_is_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_is_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_is_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_is_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_is_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_is_running(wdev))
return -ENETDOWN;
}
}
@@ -11796,29 +11789,14 @@ 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)) {
- if (rtnl)
- rtnl_unlock();
- return -ENETDOWN;
- }
-
- 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;
- }
+ if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
+ !wdev_is_running(wdev)) {
+ if (rtnl)
+ rtnl_unlock();
+ return -ENETDOWN;
}
+ if (dev)
+ dev_hold(dev);
info->user_ptr[0] = rdev;
}
