Repository : ssh://git@open-mesh.org/batman-adv
On branch : master
commit 8d5c6d68b625f277030971a8e027b3d9ab8ab45e Author: Marek Lindner mareklindner@neomailbox.ch Date: Fri Sep 30 15:21:05 2016 +0200
batman-adv: retrieve B.A.T.M.A.N. V WiFi neighbor stats from real interface
Signed-off-by: Marek Lindner mareklindner@neomailbox.ch [sven.eckelmann@open-mesh.com: re-add batadv_get_real_netdev to take rtnl semaphore for batadv_get_real_netdevice] Signed-off-by: Sven Eckelmann sven.eckelmann@open-mesh.com Signed-off-by: Simon Wunderlich sw@simonwunderlich.de
8d5c6d68b625f277030971a8e027b3d9ab8ab45e net/batman-adv/bat_v_elp.c | 10 ++++++++-- net/batman-adv/hard-interface.c | 22 ++++++++++++++++++++++ net/batman-adv/hard-interface.h | 1 + 3 files changed, 31 insertions(+), 2 deletions(-)
diff --git a/net/batman-adv/bat_v_elp.c b/net/batman-adv/bat_v_elp.c index 6a54e4d..6376240 100644 --- a/net/batman-adv/bat_v_elp.c +++ b/net/batman-adv/bat_v_elp.c @@ -75,6 +75,7 @@ static u32 batadv_v_elp_get_throughput(struct batadv_hardif_neigh_node *neigh) { struct batadv_hard_iface *hard_iface = neigh->if_incoming; struct ethtool_link_ksettings link_settings; + struct net_device *real_netdev; struct station_info sinfo; u32 throughput; int ret; @@ -94,8 +95,13 @@ static u32 batadv_v_elp_get_throughput(struct batadv_hardif_neigh_node *neigh) /* unsupported WiFi driver version */ goto default_throughput;
- ret = cfg80211_get_station(hard_iface->net_dev, - neigh->addr, &sinfo); + real_netdev = batadv_get_real_netdev(hard_iface->net_dev); + if (!real_netdev) + goto default_throughput; + + ret = cfg80211_get_station(real_netdev, neigh->addr, &sinfo); + + dev_put(real_netdev); if (ret == -ENOENT) { /* Node is not associated anymore! It would be * possible to delete this neighbor. For now set diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c index 59455cd..cd8146f 100644 --- a/net/batman-adv/hard-interface.c +++ b/net/batman-adv/hard-interface.c @@ -206,6 +206,9 @@ static bool batadv_is_valid_iface(const struct net_device *net_dev) * interface on top of another 'real' interface * @netdev: the device to check * + * Callers must hold the rtnl semaphore. You may want batadv_get_real_netdev() + * instead of this. + * * Return: the 'real' net device or the original net device and NULL in case * of an error. */ @@ -243,6 +246,25 @@ out: }
/** + * batadv_get_real_netdev - check if the given net_device struct is a virtual + * interface on top of another 'real' interface + * @net_device: the device to check + * + * Return: the 'real' net device or the original net device and NULL in case + * of an error. + */ +struct net_device *batadv_get_real_netdev(struct net_device *net_device) +{ + struct net_device *real_netdev = NULL; + + rtnl_lock(); + real_netdev = batadv_get_real_netdevice(net_device); + rtnl_unlock(); + + return real_netdev; +} + +/** * batadv_is_wext_netdev - check if the given net_device struct is a * wext wifi interface * @net_device: the device to check diff --git a/net/batman-adv/hard-interface.h b/net/batman-adv/hard-interface.h index 7281dd2..d6309a4 100644 --- a/net/batman-adv/hard-interface.h +++ b/net/batman-adv/hard-interface.h @@ -65,6 +65,7 @@ enum batadv_hard_if_cleanup {
extern struct notifier_block batadv_hard_if_notifier;
+struct net_device *batadv_get_real_netdev(struct net_device *net_device); bool batadv_is_cfg80211_hardif(struct batadv_hard_iface *hard_iface); bool batadv_is_wifi_hardif(struct batadv_hard_iface *hard_iface); struct batadv_hard_iface*