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batman-adv: Add elp_interval hardif genl configuration

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The ELP packets are transmitted every elp_interval milliseconds on an
slave/hard-interface. This value can be changed using the configuration
interface.

The BATADV_CMD_SET_HARDIF/BATADV_CMD_GET_HARDIF commands allow to set/get
the configuration of this feature using the u32 BATADV_ATTR_ELP_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 13:30:04 +01:00 committed by Simon Wunderlich
parent 7b751b39f0
commit a108008290
2 changed files with 23 additions and 0 deletions
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6
include/uapi/linux/batman_adv.h
View file

@ -477,6 +477,12 @@ enum batadv_nl_attrs {
*/
BATADV_ATTR_ORIG_INTERVAL,
/**
* @BATADV_ATTR_ELP_INTERVAL: defines the interval in milliseconds in
* which batman emits probing packets for neighbor sensing (ELP).
*/
BATADV_ATTR_ELP_INTERVAL,
/* add attributes above here, update the policy in netlink.c */
/**

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

@ -159,6 +159,7 @@ static const struct nla_policy batadv_netlink_policy[NUM_BATADV_ATTR] = {
[BATADV_ATTR_MULTICAST_FORCEFLOOD_ENABLED] = { .type = NLA_U8 },
[BATADV_ATTR_NETWORK_CODING_ENABLED] = { .type = NLA_U8 },
[BATADV_ATTR_ORIG_INTERVAL] = { .type = NLA_U32 },
[BATADV_ATTR_ELP_INTERVAL] = { .type = NLA_U32 },
};
/**
@ -825,6 +826,12 @@ static int batadv_netlink_hardif_fill(struct sk_buff *msg,
goto nla_put_failure;
}
#ifdef CONFIG_BATMAN_ADV_BATMAN_V
if (nla_put_u32(msg, BATADV_ATTR_ELP_INTERVAL,
atomic_read(&hard_iface->bat_v.elp_interval)))
goto nla_put_failure;
#endif /* CONFIG_BATMAN_ADV_BATMAN_V */
genlmsg_end(msg, hdr);
return 0;
@ -910,6 +917,16 @@ static int batadv_netlink_set_hardif(struct sk_buff *skb,
struct batadv_hard_iface *hard_iface = info->user_ptr[1];
struct batadv_priv *bat_priv = info->user_ptr[0];
#ifdef CONFIG_BATMAN_ADV_BATMAN_V
struct nlattr *attr;
if (info->attrs[BATADV_ATTR_ELP_INTERVAL]) {
attr = info->attrs[BATADV_ATTR_ELP_INTERVAL];
atomic_set(&hard_iface->bat_v.elp_interval, nla_get_u32(attr));
}
#endif /* CONFIG_BATMAN_ADV_BATMAN_V */
batadv_netlink_notify_hardif(bat_priv, hard_iface);
return 0;