From bfc7f1be57b8a5ea738ce5db62b82234e4901abf Mon Sep 17 00:00:00 2001 From: Sven Eckelmann Date: Fri, 23 Nov 2018 13:19:38 +0100 Subject: batman-adv: Add hop_penalty mesh genl configuration The TQ (B.A.T.M.A.N. IV) and throughput values (B.A.T.M.A.N. V) are reduced when they are forwarded. One of the reductions is the penalty for traversing an additional hop. This hop_penalty (0-255) defines the percentage of reduction (0-100%). The BATADV_CMD_SET_MESH/BATADV_CMD_GET_MESH commands allow to set/get the configuration of this feature using the u8 BATADV_ATTR_HOP_PENALTY attribute. Signed-off-by: Sven Eckelmann Signed-off-by: Simon Wunderlich --- net/batman-adv/netlink.c | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'net/batman-adv/netlink.c') diff --git a/net/batman-adv/netlink.c b/net/batman-adv/netlink.c index 473467afea91..ce6e6f078765 100644 --- a/net/batman-adv/netlink.c +++ b/net/batman-adv/netlink.c @@ -152,6 +152,7 @@ static const struct nla_policy batadv_netlink_policy[NUM_BATADV_ATTR] = { [BATADV_ATTR_GW_BANDWIDTH_UP] = { .type = NLA_U32 }, [BATADV_ATTR_GW_MODE] = { .type = NLA_U8 }, [BATADV_ATTR_GW_SEL_CLASS] = { .type = NLA_U32 }, + [BATADV_ATTR_HOP_PENALTY] = { .type = NLA_U8 }, }; /** @@ -330,6 +331,10 @@ static int batadv_netlink_mesh_fill(struct sk_buff *msg, goto nla_put_failure; } + if (nla_put_u8(msg, BATADV_ATTR_HOP_PENALTY, + atomic_read(&bat_priv->hop_penalty))) + goto nla_put_failure; + if (primary_if) batadv_hardif_put(primary_if); @@ -536,6 +541,12 @@ static int batadv_netlink_set_mesh(struct sk_buff *skb, struct genl_info *info) } } + if (info->attrs[BATADV_ATTR_HOP_PENALTY]) { + attr = info->attrs[BATADV_ATTR_HOP_PENALTY]; + + atomic_set(&bat_priv->hop_penalty, nla_get_u8(attr)); + } + batadv_netlink_notify_mesh(bat_priv); return 0; -- cgit v1.2.3