diff options
| author | Sven Eckelmann <sven@narfation.org> | 2018-11-23 13:06:42 +0100 |
|---|---|---|
| committer | Simon Wunderlich <sw@simonwunderlich.de> | 2019-02-09 14:28:14 +0100 |
| commit | a1c8de80329609ba68ff860074070efb1e14ade4 (patch) | |
| tree | b7cdf68350923a5a94149e9c51542a954113b7a6 | |
| parent | 43ff6105a527aaa1a8e00163b0b0aedbbc0c4522 (diff) | |
| download | linux-a1c8de80329609ba68ff860074070efb1e14ade4.tar.bz2 | |
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>
| -rw-r--r-- | include/uapi/linux/batman_adv.h | 8 | ||||
| -rw-r--r-- | net/batman-adv/netlink.c | 17 |
2 files changed, 25 insertions, 0 deletions
diff --git a/include/uapi/linux/batman_adv.h b/include/uapi/linux/batman_adv.h index 3cb35c661056..f303a1496476 100644 --- a/include/uapi/linux/batman_adv.h +++ b/include/uapi/linux/batman_adv.h @@ -388,6 +388,14 @@ enum batadv_nl_attrs { */ BATADV_ATTR_BRIDGE_LOOP_AVOIDANCE_ENABLED, + /** + * @BATADV_ATTR_DISTRIBUTED_ARP_TABLE_ENABLED: whether the distributed + * arp table feature is enabled. This feature uses a distributed hash + * table to answer ARP requests without flooding the request through + * the whole mesh. + */ + BATADV_ATTR_DISTRIBUTED_ARP_TABLE_ENABLED, + /* 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 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; |