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authorSven Eckelmann <sven@narfation.org>2018-11-23 15:06:42 +0300
committerSimon Wunderlich <sw@simonwunderlich.de>2019-02-09 16:28:14 +0300
commita1c8de80329609ba68ff860074070efb1e14ade4 (patch)
treeb7cdf68350923a5a94149e9c51542a954113b7a6 /net/batman-adv/netlink.c
parent43ff6105a527aaa1a8e00163b0b0aedbbc0c4522 (diff)
downloadlinux-a1c8de80329609ba68ff860074070efb1e14ade4.tar.xz
batman-adv: Add distributed_arp_table mesh genl configuration
The mesh interface can use a distributed hash table to answer ARP requests without flooding the request through the whole mesh. The BATADV_CMD_SET_MESH/BATADV_CMD_GET_MESH commands allow to set/get the configuration of this feature using the BATADV_ATTR_DISTRIBUTED_ARP_TABLE_ENABLED attribute. Setting the u8 to zero will disable this feature and setting it to something else is enabling this feature. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
Diffstat (limited to 'net/batman-adv/netlink.c')
-rw-r--r--net/batman-adv/netlink.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/net/batman-adv/netlink.c b/net/batman-adv/netlink.c
index 40c940da9498..3028c2a5c782 100644
--- a/net/batman-adv/netlink.c
+++ b/net/batman-adv/netlink.c
@@ -145,6 +145,7 @@ static const struct nla_policy batadv_netlink_policy[NUM_BATADV_ATTR] = {
[BATADV_ATTR_ISOLATION_MASK] = { .type = NLA_U32 },
[BATADV_ATTR_BONDING_ENABLED] = { .type = NLA_U8 },
[BATADV_ATTR_BRIDGE_LOOP_AVOIDANCE_ENABLED] = { .type = NLA_U8 },
+ [BATADV_ATTR_DISTRIBUTED_ARP_TABLE_ENABLED] = { .type = NLA_U8 },
};
/**
@@ -291,6 +292,12 @@ static int batadv_netlink_mesh_fill(struct sk_buff *msg,
goto nla_put_failure;
#endif /* CONFIG_BATMAN_ADV_BLA */
+#ifdef CONFIG_BATMAN_ADV_DAT
+ if (nla_put_u8(msg, BATADV_ATTR_DISTRIBUTED_ARP_TABLE_ENABLED,
+ !!atomic_read(&bat_priv->distributed_arp_table)))
+ goto nla_put_failure;
+#endif /* CONFIG_BATMAN_ADV_DAT */
+
if (primary_if)
batadv_hardif_put(primary_if);
@@ -415,6 +422,16 @@ static int batadv_netlink_set_mesh(struct sk_buff *skb, struct genl_info *info)
}
#endif /* CONFIG_BATMAN_ADV_BLA */
+#ifdef CONFIG_BATMAN_ADV_DAT
+ if (info->attrs[BATADV_ATTR_DISTRIBUTED_ARP_TABLE_ENABLED]) {
+ attr = info->attrs[BATADV_ATTR_DISTRIBUTED_ARP_TABLE_ENABLED];
+
+ atomic_set(&bat_priv->distributed_arp_table,
+ !!nla_get_u8(attr));
+ batadv_dat_status_update(bat_priv->soft_iface);
+ }
+#endif /* CONFIG_BATMAN_ADV_DAT */
+
batadv_netlink_notify_mesh(bat_priv);
return 0;