From: Sven Eckelmann <sven@narfation.org>
To: b.a.t.m.a.n@lists.open-mesh.org
Cc: Sven Eckelmann <sven@narfation.org>,
Marek Lindner <mareklindner@neomailbox.ch>,
Antonio Quartulli <a@unstable.cc>
Subject: [B.A.T.M.A.N.] [PATCH v5 12/19] batman-adv: Add hop_penalty mesh genl configuration
Date: Sat, 9 Feb 2019 14:41:02 +0100 [thread overview]
Message-ID: <20190209134109.14908-13-sven@narfation.org> (raw)
In-Reply-To: <20190209134109.14908-1-sven@narfation.org>
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 <sven@narfation.org>
---
Cc: Marek Lindner <mareklindner@neomailbox.ch>
Cc: Antonio Quartulli <a@unstable.cc>
---
include/uapi/linux/batman_adv.h | 6 ++++++
net/batman-adv/netlink.c | 11 +++++++++++
2 files changed, 17 insertions(+)
diff --git a/include/uapi/linux/batman_adv.h b/include/uapi/linux/batman_adv.h
index 165272be..b37cb923 100644
--- a/include/uapi/linux/batman_adv.h
+++ b/include/uapi/linux/batman_adv.h
@@ -443,6 +443,12 @@ enum batadv_nl_attrs {
*/
BATADV_ATTR_GW_SEL_CLASS,
+ /**
+ * @BATADV_ATTR_HOP_PENALTY: defines the penalty which will be applied
+ * to an originator message's tq-field on every hop.
+ */
+ BATADV_ATTR_HOP_PENALTY,
+
/* 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 473467af..ce6e6f07 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;
--
2.20.1
next prev parent reply other threads:[~2019-02-09 13:41 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-09 13:40 [B.A.T.M.A.N.] [PATCH v5 00/19] batman-adv: netlink restructuring, part 2 Sven Eckelmann
2019-02-09 13:40 ` [B.A.T.M.A.N.] [PATCH v5 01/19] batman-adv: Move common genl doit code pre/post hooks Sven Eckelmann
2019-02-09 13:40 ` [B.A.T.M.A.N.] [PATCH v5 02/19] batman-adv: Prepare framework for mesh genl config Sven Eckelmann
2019-02-09 13:40 ` [B.A.T.M.A.N.] [PATCH v5 03/19] batman-adv: Prepare framework for hardif " Sven Eckelmann
2019-02-09 13:40 ` [B.A.T.M.A.N.] [PATCH v5 04/19] batman-adv: Prepare framework for vlan " Sven Eckelmann
2019-02-09 13:40 ` [B.A.T.M.A.N.] [PATCH v5 05/19] batman-adv: Add aggregated_ogms mesh genl configuration Sven Eckelmann
2019-02-09 13:40 ` [B.A.T.M.A.N.] [PATCH v5 06/19] batman-adv: Add ap_isolation mesh/vlan " Sven Eckelmann
2019-02-09 13:40 ` [B.A.T.M.A.N.] [PATCH v5 07/19] batman-adv: Add bonding mesh " Sven Eckelmann
2019-02-09 13:40 ` [B.A.T.M.A.N.] [PATCH v5 08/19] batman-adv: Add bridge_loop_avoidance " Sven Eckelmann
2019-02-09 13:40 ` [B.A.T.M.A.N.] [PATCH v5 09/19] batman-adv: Add distributed_arp_table " Sven Eckelmann
2019-02-09 13:41 ` [B.A.T.M.A.N.] [PATCH v5 10/19] batman-adv: Add fragmentation " Sven Eckelmann
2019-02-09 13:41 ` [B.A.T.M.A.N.] [PATCH v5 11/19] batman-adv: Add gateway " Sven Eckelmann
2019-02-09 13:41 ` Sven Eckelmann [this message]
2019-02-09 13:41 ` [B.A.T.M.A.N.] [PATCH v5 13/19] batman-adv: Add log_level " Sven Eckelmann
2019-02-09 13:41 ` [B.A.T.M.A.N.] [PATCH v5 14/19] batman-adv: Add multicast forceflood " Sven Eckelmann
2019-02-09 13:41 ` [B.A.T.M.A.N.] [PATCH v5 15/19] batman-adv: Add network_coding " Sven Eckelmann
2019-02-09 13:41 ` [B.A.T.M.A.N.] [PATCH v5 16/19] batman-adv: Add orig_interval " Sven Eckelmann
2019-02-09 13:41 ` [B.A.T.M.A.N.] [PATCH v5 17/19] batman-adv: Add elp_interval hardif " Sven Eckelmann
2019-02-09 13:41 ` [B.A.T.M.A.N.] [PATCH v5 18/19] batman-adv: Add throughput_override " Sven Eckelmann
2019-02-09 13:41 ` [B.A.T.M.A.N.] [PATCH v5 19/19] batman-adv: Trigger genl notification on sysfs config change Sven Eckelmann
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