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ipt_ULOG.h

/* Header file for IP tables userspace logging, Version 1.8
 *
 * (C) 2000-2002 by Harald Welte <laforge@gnumonks.org>
 * 
 * Distributed under the terms of GNU GPL */

#ifndef _IPT_ULOG_H
#define _IPT_ULOG_H

#ifndef NETLINK_NFLOG
#define NETLINK_NFLOG   5
#endif

#define ULOG_DEFAULT_NLGROUP  1
#define ULOG_DEFAULT_QTHRESHOLD     1

#define ULOG_MAC_LEN    80
#define ULOG_PREFIX_LEN 32

#define ULOG_MAX_QLEN   50
/* Why 50? Well... there is a limit imposed by the slab cache 131000
 * bytes. So the multipart netlink-message has to be < 131000 bytes.
 * Assuming a standard ethernet-mtu of 1500, we could define this up
 * to 80... but even 50 seems to be big enough. */

/* private data structure for each rule with a ULOG target */
struct ipt_ulog_info {
      unsigned int nl_group;
      size_t copy_range;
      size_t qthreshold;
      char prefix[ULOG_PREFIX_LEN];
};

/* Format of the ULOG packets passed through netlink */
typedef struct ulog_packet_msg {
      unsigned long mark;
      long timestamp_sec;
      long timestamp_usec;
      unsigned int hook;
      char indev_name[IFNAMSIZ];
      char outdev_name[IFNAMSIZ];
      size_t data_len;
      char prefix[ULOG_PREFIX_LEN];
      unsigned char mac_len;
      unsigned char mac[ULOG_MAC_LEN];
      unsigned char payload[0];
} ulog_packet_msg_t;

#endif /*_IPT_ULOG_H*/

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