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batman-adv: Add log_level mesh genl configuration

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In contrast to other modules, batman-adv allows to set the debug message
verbosity per mesh/soft-interface and not per module (via modparam).

The BATADV_CMD_SET_MESH/BATADV_CMD_GET_MESH commands allow to set/get the
configuration of this feature using the u32 (bitmask) BATADV_ATTR_LOG_LEVEL
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 13:22:33 +01:00 committed by Simon Wunderlich
parent bfc7f1be57
commit b85bd09109
2 changed files with 23 additions and 0 deletions
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6
include/uapi/linux/batman_adv.h
View File

@ -449,6 +449,12 @@ enum batadv_nl_attrs {
*/
BATADV_ATTR_HOP_PENALTY,
/**
* @BATADV_ATTR_LOG_LEVEL: bitmask with to define which debug messages
* should be send to the debug log/trace ring buffer
*/
BATADV_ATTR_LOG_LEVEL,
/* add attributes above here, update the policy in netlink.c */
/**

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

@ -53,6 +53,7 @@
#include "gateway_client.h"
#include "gateway_common.h"
#include "hard-interface.h"
#include "log.h"
#include "multicast.h"
#include "originator.h"
#include "soft-interface.h"
@ -153,6 +154,7 @@ static const struct nla_policy batadv_netlink_policy[NUM_BATADV_ATTR] = {
[BATADV_ATTR_GW_MODE] = { .type = NLA_U8 },
[BATADV_ATTR_GW_SEL_CLASS] = { .type = NLA_U32 },
[BATADV_ATTR_HOP_PENALTY] = { .type = NLA_U8 },
[BATADV_ATTR_LOG_LEVEL] = { .type = NLA_U32 },
};
/**
@ -335,6 +337,12 @@ static int batadv_netlink_mesh_fill(struct sk_buff *msg,
atomic_read(&bat_priv->hop_penalty)))
goto nla_put_failure;
#ifdef CONFIG_BATMAN_ADV_DEBUG
if (nla_put_u32(msg, BATADV_ATTR_LOG_LEVEL,
atomic_read(&bat_priv->log_level)))
goto nla_put_failure;
#endif /* CONFIG_BATMAN_ADV_DEBUG */
if (primary_if)
batadv_hardif_put(primary_if);
@ -547,6 +555,15 @@ static int batadv_netlink_set_mesh(struct sk_buff *skb, struct genl_info *info)
atomic_set(&bat_priv->hop_penalty, nla_get_u8(attr));
}
#ifdef CONFIG_BATMAN_ADV_DEBUG
if (info->attrs[BATADV_ATTR_LOG_LEVEL]) {
attr = info->attrs[BATADV_ATTR_LOG_LEVEL];
atomic_set(&bat_priv->log_level,
nla_get_u32(attr) & BATADV_DBG_ALL);
}
#endif /* CONFIG_BATMAN_ADV_DEBUG */
batadv_netlink_notify_mesh(bat_priv);
return 0;