1e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter Warasin/* 2e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter Warasin * ebt_nflog 3e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter Warasin * 4e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter Warasin * Author: 5e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter Warasin * Peter Warasin <peter@endian.com> 6e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter Warasin * 7e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter Warasin * February, 2008 8e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter Warasin * 9e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter Warasin * Based on: 10e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter Warasin * xt_NFLOG.c, (C) 2006 by Patrick McHardy <kaber@trash.net> 11e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter Warasin * ebt_ulog.c, (C) 2004 by Bart De Schuymer <bdschuym@pandora.be> 12e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter Warasin * 13e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter Warasin */ 14e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter Warasin 15e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter Warasin#include <linux/module.h> 16e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter Warasin#include <linux/spinlock.h> 1718219d3f7d6a5bc43825a41e0763158efbdb80d3Jan Engelhardt#include <linux/netfilter/x_tables.h> 18e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter Warasin#include <linux/netfilter_bridge/ebtables.h> 19e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter Warasin#include <linux/netfilter_bridge/ebt_nflog.h> 20e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter Warasin#include <net/netfilter/nf_log.h> 21e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter Warasin 222d06d4a5cc107046508d860a0b47dbc43b829b79Jan Engelhardtstatic unsigned int 234b560b447df83368df44bd3712c0c39b1d79ba04Jan Engelhardtebt_nflog_tg(struct sk_buff *skb, const struct xt_action_param *par) 24e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter Warasin{ 257eb3558655aaa87a3e71a0c065dfaddda521fa6dJan Engelhardt const struct ebt_nflog_info *info = par->targinfo; 26e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter Warasin struct nf_loginfo li; 2730e0c6a6bee24db0166b7ca709277cd693e179f2Gao feng struct net *net = dev_net(par->in ? par->in : par->out); 28e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter Warasin 29e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter Warasin li.type = NF_LOG_TYPE_ULOG; 30e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter Warasin li.u.ulog.copy_len = info->len; 31e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter Warasin li.u.ulog.group = info->group; 32e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter Warasin li.u.ulog.qthreshold = info->threshold; 33e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter Warasin 3430e0c6a6bee24db0166b7ca709277cd693e179f2Gao feng nf_log_packet(net, PF_BRIDGE, par->hooknum, skb, par->in, 3530e0c6a6bee24db0166b7ca709277cd693e179f2Gao feng par->out, &li, "%s", info->prefix); 360ac6ab1f7915fc820ca0cf8f597290dbb249edccJan Engelhardt return EBT_CONTINUE; 37e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter Warasin} 38e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter Warasin 39135367b8f6a18507af6b9a6910a14b5699415309Jan Engelhardtstatic int ebt_nflog_tg_check(const struct xt_tgchk_param *par) 40e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter Warasin{ 41af5d6dc200eb0fcc6fbd3df1ab4d8969004cb37fJan Engelhardt struct ebt_nflog_info *info = par->targinfo; 42e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter Warasin 43e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter Warasin if (info->flags & ~EBT_NFLOG_MASK) 44d6b00a5345ce4e86e8b00a88bb84a2c0c1f69ddcJan Engelhardt return -EINVAL; 45e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter Warasin info->prefix[EBT_NFLOG_PREFIX_SIZE - 1] = '\0'; 46d6b00a5345ce4e86e8b00a88bb84a2c0c1f69ddcJan Engelhardt return 0; 47e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter Warasin} 48e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter Warasin 49043ef46c7690bfdbd5b012e15812a14a19ca5604Jan Engelhardtstatic struct xt_target ebt_nflog_tg_reg __read_mostly = { 50043ef46c7690bfdbd5b012e15812a14a19ca5604Jan Engelhardt .name = "nflog", 51043ef46c7690bfdbd5b012e15812a14a19ca5604Jan Engelhardt .revision = 0, 52043ef46c7690bfdbd5b012e15812a14a19ca5604Jan Engelhardt .family = NFPROTO_BRIDGE, 53043ef46c7690bfdbd5b012e15812a14a19ca5604Jan Engelhardt .target = ebt_nflog_tg, 542d06d4a5cc107046508d860a0b47dbc43b829b79Jan Engelhardt .checkentry = ebt_nflog_tg_check, 55fc0e3df4f00a5f62c2f2fce84bf496136b58c474Florian Westphal .targetsize = sizeof(struct ebt_nflog_info), 56043ef46c7690bfdbd5b012e15812a14a19ca5604Jan Engelhardt .me = THIS_MODULE, 57e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter Warasin}; 58e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter Warasin 59e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter Warasinstatic int __init ebt_nflog_init(void) 60e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter Warasin{ 61043ef46c7690bfdbd5b012e15812a14a19ca5604Jan Engelhardt return xt_register_target(&ebt_nflog_tg_reg); 62e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter Warasin} 63e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter Warasin 64e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter Warasinstatic void __exit ebt_nflog_fini(void) 65e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter Warasin{ 66043ef46c7690bfdbd5b012e15812a14a19ca5604Jan Engelhardt xt_unregister_target(&ebt_nflog_tg_reg); 67e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter Warasin} 68e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter Warasin 69e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter Warasinmodule_init(ebt_nflog_init); 70e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter Warasinmodule_exit(ebt_nflog_fini); 71e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter WarasinMODULE_LICENSE("GPL"); 72e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter WarasinMODULE_AUTHOR("Peter Warasin <peter@endian.com>"); 73e7bfd0a1a6c8f82977253dab19be9d9979c1ec1bPeter WarasinMODULE_DESCRIPTION("ebtables NFLOG netfilter logging module"); 74