The ELP packets are transmitted every elp_interval milliseconds on an slave/hard-interface. This value can be changed using the configuration interface.
The BATADV_CMD_SET_HARDIF/BATADV_CMD_GET_HARDIF commands allow to set/get the configuration of this feature using the u32 BATADV_ATTR_ELP_INTERVAL attribute.
Cc: Jiri Pirko jiri@mellanox.com Signed-off-by: Sven Eckelmann sven@narfation.org --- include/uapi/linux/batman_adv.h | 6 ++++++ net/batman-adv/netlink.c | 17 +++++++++++++++++ 2 files changed, 23 insertions(+)
diff --git a/include/uapi/linux/batman_adv.h b/include/uapi/linux/batman_adv.h index f8661657..a4ab6bda 100644 --- a/include/uapi/linux/batman_adv.h +++ b/include/uapi/linux/batman_adv.h @@ -475,6 +475,12 @@ enum batadv_nl_attrs { */ BATADV_ATTR_ORIG_INTERVAL,
+ /** + * @BATADV_ATTR_ELP_INTERVAL: defines the interval in milliseconds in + * which batman emits probing packets for neighbor sensing (ELP). + */ + BATADV_ATTR_ELP_INTERVAL, + /* add attributes above here, update the policy in netlink.c */
/** diff --git a/net/batman-adv/netlink.c b/net/batman-adv/netlink.c index 61a3e6f1..70ab010e 100644 --- a/net/batman-adv/netlink.c +++ b/net/batman-adv/netlink.c @@ -159,6 +159,7 @@ static const struct nla_policy batadv_netlink_policy[NUM_BATADV_ATTR] = { [BATADV_ATTR_MULTICAST_MODE] = { .type = NLA_U8 }, [BATADV_ATTR_NETWORK_CODING] = { .type = NLA_U8 }, [BATADV_ATTR_ORIG_INTERVAL] = { .type = NLA_U32 }, + [BATADV_ATTR_ELP_INTERVAL] = { .type = NLA_U32 }, };
/** @@ -823,6 +824,12 @@ static int batadv_netlink_hardif_put(struct sk_buff *msg, goto nla_put_failure; }
+#ifdef CONFIG_BATMAN_ADV_BATMAN_V + if (nla_put_u32(msg, BATADV_ATTR_ELP_INTERVAL, + atomic_read(&hard_iface->bat_v.elp_interval))) + goto nla_put_failure; +#endif /* CONFIG_BATMAN_ADV_BATMAN_V */ + genlmsg_end(msg, hdr); return 0;
@@ -908,6 +915,16 @@ static int batadv_netlink_set_hardif(struct sk_buff *skb, struct batadv_hard_iface *hard_iface = info->user_ptr[1]; struct batadv_priv *bat_priv = info->user_ptr[0];
+#ifdef CONFIG_BATMAN_ADV_BATMAN_V + struct nlattr *attr; + + if (info->attrs[BATADV_ATTR_ELP_INTERVAL]) { + attr = info->attrs[BATADV_ATTR_ELP_INTERVAL]; + + atomic_set(&hard_iface->bat_v.elp_interval, nla_get_u32(attr)); + } +#endif /* CONFIG_BATMAN_ADV_BATMAN_V */ + batadv_netlink_notify_hardif(bat_priv, hard_iface);
return 0;