batman-adv: ELP - compute the metric based on the estimated throughput
In case of wireless interface retrieve the throughput by
querying cfg80211. To perform this call a separate work
must be scheduled because the function may sleep and this
is not allowed within an RCU protected context (RCU in this
case is used to iterate over all the neighbours).
Use ethtool to retrieve information about an Ethernet link
like HALF/FULL_DUPLEX and advertised bandwidth (e.g.
100/10Mbps).
The metric is updated each time a new ELP packet is sent,
this way it is possible to timely react to a metric
variation which can imply (for example) a neighbour
disconnection.
Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
diff --git a/net/batman-adv/bat_v_elp.h b/net/batman-adv/bat_v_elp.h
index 5a7bc39..e95f1bc 100644
--- a/net/batman-adv/bat_v_elp.h
+++ b/net/batman-adv/bat_v_elp.h
@@ -21,11 +21,13 @@
#define _NET_BATMAN_ADV_BAT_V_ELP_H_
struct sk_buff;
+struct work_struct;
int batadv_v_elp_iface_enable(struct batadv_hard_iface *hard_iface);
void batadv_v_elp_iface_disable(struct batadv_hard_iface *hard_iface);
void batadv_v_elp_primary_iface_set(struct batadv_hard_iface *primary_iface);
int batadv_v_elp_packet_recv(struct sk_buff *skb,
struct batadv_hard_iface *if_incoming);
+void batadv_v_elp_throughput_metric_update(struct work_struct *work);
#endif /* _NET_BATMAN_ADV_BAT_V_ELP_H_ */