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batman-adv: Add orig_interval mesh genl configuration

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The OGM packets are transmitted every orig_interval milliseconds. This
value can be changed using the configuration interface.

The BATADV_CMD_SET_MESH/BATADV_CMD_GET_MESH commands allow to set/get the
configuration of this feature using the u32 BATADV_ATTR_ORIG_INTERVAL
attribute.

Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
This commit is contained in:
Sven Eckelmann 2018-11-23 13:28:02 +01:00 committed by Simon Wunderlich
parent 6c57cde680
commit 7b751b39f0
2 changed files with 23 additions and 0 deletions
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6
include/uapi/linux/batman_adv.h
View File

@ -471,6 +471,12 @@ enum batadv_nl_attrs {
*/
BATADV_ATTR_NETWORK_CODING_ENABLED,
/**
* @BATADV_ATTR_ORIG_INTERVAL: defines the interval in milliseconds in
* which batman sends its protocol messages.
*/
BATADV_ATTR_ORIG_INTERVAL,
/* add attributes above here, update the policy in netlink.c */
/**

17
net/batman-adv/netlink.c
View File

@ -158,6 +158,7 @@ static const struct nla_policy batadv_netlink_policy[NUM_BATADV_ATTR] = {
[BATADV_ATTR_LOG_LEVEL] = { .type = NLA_U32 },
[BATADV_ATTR_MULTICAST_FORCEFLOOD_ENABLED] = { .type = NLA_U8 },
[BATADV_ATTR_NETWORK_CODING_ENABLED] = { .type = NLA_U8 },
[BATADV_ATTR_ORIG_INTERVAL] = { .type = NLA_U32 },
};
/**
@ -358,6 +359,10 @@ static int batadv_netlink_mesh_fill(struct sk_buff *msg,
goto nla_put_failure;
#endif /* CONFIG_BATMAN_ADV_NC */
if (nla_put_u32(msg, BATADV_ATTR_ORIG_INTERVAL,
atomic_read(&bat_priv->orig_interval)))
goto nla_put_failure;
if (primary_if)
batadv_hardif_put(primary_if);
@ -596,6 +601,18 @@ static int batadv_netlink_set_mesh(struct sk_buff *skb, struct genl_info *info)
}
#endif /* CONFIG_BATMAN_ADV_NC */
if (info->attrs[BATADV_ATTR_ORIG_INTERVAL]) {
u32 orig_interval;
attr = info->attrs[BATADV_ATTR_ORIG_INTERVAL];
orig_interval = nla_get_u32(attr);
orig_interval = min_t(u32, orig_interval, INT_MAX);
orig_interval = max_t(u32, orig_interval, 2 * BATADV_JITTER);
atomic_set(&bat_priv->orig_interval, orig_interval);
}
batadv_netlink_notify_mesh(bat_priv);
return 0;