diff options
Diffstat (limited to 'net/netfilter/xt_NFQUEUE.c')
-rw-r--r-- | net/netfilter/xt_NFQUEUE.c | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/net/netfilter/xt_NFQUEUE.c b/net/netfilter/xt_NFQUEUE.c new file mode 100644 index 000000000000..8b76b6f8d1e4 --- /dev/null +++ b/net/netfilter/xt_NFQUEUE.c @@ -0,0 +1,107 @@ +/* iptables module for using new netfilter netlink queue + * + * (C) 2005 by Harald Welte <laforge@netfilter.org> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ + +#include <linux/module.h> +#include <linux/skbuff.h> + +#include <linux/netfilter.h> +#include <linux/netfilter_arp.h> +#include <linux/netfilter/x_tables.h> +#include <linux/netfilter/xt_NFQUEUE.h> + +MODULE_AUTHOR("Harald Welte <laforge@netfilter.org>"); +MODULE_DESCRIPTION("[ip,ip6,arp]_tables NFQUEUE target"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("ipt_NFQUEUE"); +MODULE_ALIAS("ip6t_NFQUEUE"); +MODULE_ALIAS("arpt_NFQUEUE"); + +static unsigned int +target(struct sk_buff **pskb, + const struct net_device *in, + const struct net_device *out, + unsigned int hooknum, + const void *targinfo, + void *userinfo) +{ + const struct xt_NFQ_info *tinfo = targinfo; + + return NF_QUEUE_NR(tinfo->queuenum); +} + +static int +checkentry(const char *tablename, + const void *entry, + void *targinfo, + unsigned int targinfosize, + unsigned int hook_mask) +{ + if (targinfosize != XT_ALIGN(sizeof(struct xt_NFQ_info))) { + printk(KERN_WARNING "NFQUEUE: targinfosize %u != %Zu\n", + targinfosize, + XT_ALIGN(sizeof(struct xt_NFQ_info))); + return 0; + } + + return 1; +} + +static struct xt_target ipt_NFQ_reg = { + .name = "NFQUEUE", + .target = target, + .checkentry = checkentry, + .me = THIS_MODULE, +}; + +static struct xt_target ip6t_NFQ_reg = { + .name = "NFQUEUE", + .target = target, + .checkentry = checkentry, + .me = THIS_MODULE, +}; + +static struct xt_target arpt_NFQ_reg = { + .name = "NFQUEUE", + .target = target, + .checkentry = checkentry, + .me = THIS_MODULE, +}; + +static int __init init(void) +{ + int ret; + ret = xt_register_target(AF_INET, &ipt_NFQ_reg); + if (ret) + return ret; + ret = xt_register_target(AF_INET6, &ip6t_NFQ_reg); + if (ret) + goto out_ip; + ret = xt_register_target(NF_ARP, &arpt_NFQ_reg); + if (ret) + goto out_ip6; + + return ret; +out_ip6: + xt_unregister_target(AF_INET6, &ip6t_NFQ_reg); +out_ip: + xt_unregister_target(AF_INET, &ipt_NFQ_reg); + + return ret; +} + +static void __exit fini(void) +{ + xt_unregister_target(NF_ARP, &arpt_NFQ_reg); + xt_unregister_target(AF_INET6, &ip6t_NFQ_reg); + xt_unregister_target(AF_INET, &ipt_NFQ_reg); +} + +module_init(init); +module_exit(fini); |