| /* |
| * ebt_nflog |
| * |
| * Author: |
| * Peter Warasin <peter@endian.com> |
| * |
| * February, 2008 |
| * |
| * Based on: |
| * xt_NFLOG.c, (C) 2006 by Patrick McHardy <kaber@trash.net> |
| * ebt_ulog.c, (C) 2004 by Bart De Schuymer <bdschuym@pandora.be> |
| * |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/spinlock.h> |
| #include <linux/netfilter/x_tables.h> |
| #include <linux/netfilter_bridge/ebtables.h> |
| #include <linux/netfilter_bridge/ebt_nflog.h> |
| #include <net/netfilter/nf_log.h> |
| |
| static unsigned int |
| ebt_nflog_tg(struct sk_buff *skb, const struct xt_target_param *par) |
| { |
| const struct ebt_nflog_info *info = par->targinfo; |
| struct nf_loginfo li; |
| |
| li.type = NF_LOG_TYPE_ULOG; |
| li.u.ulog.copy_len = info->len; |
| li.u.ulog.group = info->group; |
| li.u.ulog.qthreshold = info->threshold; |
| |
| nf_log_packet(PF_BRIDGE, par->hooknum, skb, par->in, par->out, |
| &li, "%s", info->prefix); |
| return EBT_CONTINUE; |
| } |
| |
| static bool |
| ebt_nflog_tg_check(const char *table, const void *e, |
| const struct xt_target *target, void *data, |
| unsigned int hookmask) |
| { |
| struct ebt_nflog_info *info = data; |
| |
| if (info->flags & ~EBT_NFLOG_MASK) |
| return false; |
| info->prefix[EBT_NFLOG_PREFIX_SIZE - 1] = '\0'; |
| return true; |
| } |
| |
| static struct xt_target ebt_nflog_tg_reg __read_mostly = { |
| .name = "nflog", |
| .revision = 0, |
| .family = NFPROTO_BRIDGE, |
| .target = ebt_nflog_tg, |
| .checkentry = ebt_nflog_tg_check, |
| .targetsize = XT_ALIGN(sizeof(struct ebt_nflog_info)), |
| .me = THIS_MODULE, |
| }; |
| |
| static int __init ebt_nflog_init(void) |
| { |
| return xt_register_target(&ebt_nflog_tg_reg); |
| } |
| |
| static void __exit ebt_nflog_fini(void) |
| { |
| xt_unregister_target(&ebt_nflog_tg_reg); |
| } |
| |
| module_init(ebt_nflog_init); |
| module_exit(ebt_nflog_fini); |
| MODULE_LICENSE("GPL"); |
| MODULE_AUTHOR("Peter Warasin <peter@endian.com>"); |
| MODULE_DESCRIPTION("ebtables NFLOG netfilter logging module"); |