From: Sven Eckelmann <sven@narfation.org>
To: b.a.t.m.a.n@lists.open-mesh.org
Cc: Jiri Pirko <jiri@mellanox.com>,
netdev@vger.kernel.org, Sven Eckelmann <sven@narfation.org>
Subject: [B.A.T.M.A.N.] [RFC v2 12/19] batman-adv: Add hop_penalty mesh genl configuration
Date: Fri, 23 Nov 2018 17:13:52 +0100 [thread overview]
Message-ID: <20181123161359.13342-13-sven@narfation.org> (raw)
In-Reply-To: <20181123161359.13342-1-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.
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 | 11 +++++++++++
2 files changed, 17 insertions(+)
diff --git a/include/uapi/linux/batman_adv.h b/include/uapi/linux/batman_adv.h
index e9c48dbd..b6d0eaf6 100644
--- a/include/uapi/linux/batman_adv.h
+++ b/include/uapi/linux/batman_adv.h
@@ -442,6 +442,12 @@ 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 4e806e48..4d3a23df 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 },
};
/**
@@ -329,6 +330,10 @@ static int batadv_netlink_mesh_put(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;
+
batadv_hardif_put(primary_if);
genlmsg_end(msg, hdr);
@@ -534,6 +539,12 @@ 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;
--
2.19.1
next prev parent reply other threads:[~2018-11-23 16:13 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-23 16:13 [B.A.T.M.A.N.] [RFC v2 00/19] batman-adv: netlink restructuring, part 2 Sven Eckelmann
2018-11-23 16:13 ` [B.A.T.M.A.N.] [RFC v2 01/19] batman-adv: Move common genl doit code pre/post hooks Sven Eckelmann
2018-11-23 16:13 ` [B.A.T.M.A.N.] [RFC v2 02/19] batman-adv: Prepare framework for mesh genl config Sven Eckelmann
2018-11-23 16:13 ` [B.A.T.M.A.N.] [RFC v2 03/19] batman-adv: Prepare framework for hardif " Sven Eckelmann
2018-11-23 16:13 ` [B.A.T.M.A.N.] [RFC v2 04/19] batman-adv: Prepare framework for vlan " Sven Eckelmann
2018-11-23 16:13 ` [B.A.T.M.A.N.] [RFC v2 05/19] batman-adv: Add aggregated_ogms mesh genl configuration Sven Eckelmann
2018-11-23 16:13 ` [B.A.T.M.A.N.] [RFC v2 06/19] batman-adv: Add ap_isolation mesh/vlan " Sven Eckelmann
2018-11-23 16:13 ` [B.A.T.M.A.N.] [RFC v2 07/19] batman-adv: Add bonding mesh " Sven Eckelmann
2018-11-23 16:13 ` [B.A.T.M.A.N.] [RFC v2 08/19] batman-adv: Add bridge_loop_avoidance " Sven Eckelmann
2018-11-23 16:13 ` [B.A.T.M.A.N.] [RFC v2 09/19] batman-adv: Add distributed_arp_table " Sven Eckelmann
2018-11-23 16:13 ` [B.A.T.M.A.N.] [RFC v2 10/19] batman-adv: Add fragmentation " Sven Eckelmann
2018-11-23 16:13 ` [B.A.T.M.A.N.] [RFC v2 11/19] batman-adv: Add gateway " Sven Eckelmann
2018-11-24 20:52 ` Sven Eckelmann
2018-11-23 16:13 ` Sven Eckelmann [this message]
2018-11-23 16:13 ` [B.A.T.M.A.N.] [RFC v2 13/19] batman-adv: Add log_level " Sven Eckelmann
2018-11-23 16:13 ` [B.A.T.M.A.N.] [RFC v2 14/19] batman-adv: Add multicast_mode " Sven Eckelmann
2018-11-23 16:13 ` [B.A.T.M.A.N.] [RFC v2 15/19] batman-adv: Add network_coding " Sven Eckelmann
2018-11-23 16:13 ` [B.A.T.M.A.N.] [RFC v2 16/19] batman-adv: Add orig_interval " Sven Eckelmann
2018-11-24 17:52 ` Sven Eckelmann
2018-11-23 16:13 ` [B.A.T.M.A.N.] [RFC v2 17/19] batman-adv: Add elp_interval hardif " Sven Eckelmann
2018-11-23 16:13 ` [B.A.T.M.A.N.] [RFC v2 18/19] batman-adv: Add throughput_override " Sven Eckelmann
2018-11-23 16:13 ` [B.A.T.M.A.N.] [RFC v2 19/19] batman-adv: Trigger genl notification on sysfs config change Sven Eckelmann
2018-11-24 9:29 ` [B.A.T.M.A.N.] [RFC v2 00/19] batman-adv: netlink restructuring, part 2 Jiri Pirko
2018-11-24 9:44 ` Sven Eckelmann
2018-11-24 10:23 ` Jiri Pirko
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20181123161359.13342-13-sven@narfation.org \
--to=sven@narfation.org \
--cc=b.a.t.m.a.n@lists.open-mesh.org \
--cc=jiri@mellanox.com \
--cc=netdev@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).