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Network Drop Monitor: Adding drop monitor implementation & Netlink protocol

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Signed-off-by: Neil Horman <nhorman@tuxdriver.com>

 include/linux/net_dropmon.h |   56 +++++++++
 net/core/drop_monitor.c     |  263 ++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 319 insertions(+)
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Neil Horman
2009-03-11 09:51:26 +00:00
committed by David S. Miller
parent ead2ceb0ec
commit 9a8afc8d39
2 changed files with 319 additions and 0 deletions
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56
include/linux/net_dropmon.h Normal file
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@@ -0,0 +1,56 @@
#ifndef __NET_DROPMON_H
#define __NET_DROPMON_H
#include <linux/netlink.h>
struct net_dm_drop_point {
__u8 pc[8];
__u32 count;
};
#define NET_DM_CFG_VERSION 0
#define NET_DM_CFG_ALERT_COUNT 1
#define NET_DM_CFG_ALERT_DELAY 2
#define NET_DM_CFG_MAX 3
struct net_dm_config_entry {
__u32 type;
__u64 data __attribute__((aligned(8)));
};
struct net_dm_config_msg {
__u32 entries;
struct net_dm_config_entry options[0];
};
struct net_dm_alert_msg {
__u32 entries;
struct net_dm_drop_point points[0];
};
struct net_dm_user_msg {
union {
struct net_dm_config_msg user;
struct net_dm_alert_msg alert;
} u;
};
/* These are the netlink message types for this protocol */
enum {
NET_DM_CMD_UNSPEC = 0,
NET_DM_CMD_ALERT,
NET_DM_CMD_CONFIG,
NET_DM_CMD_START,
NET_DM_CMD_STOP,
_NET_DM_CMD_MAX,
};
#define NET_DM_CMD_MAX (_NET_DM_CMD_MAX - 1)
/*
* Our group identifiers
*/
#define NET_DM_GRP_ALERT 1
#endif