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Subversion Repositories or1k_soc_on_altera_embedded_dev_kit
[/] [or1k_soc_on_altera_embedded_dev_kit/] [tags/] [linux-2.6/] [linux-2.6.24_or32_unified_v2.3/] [net/] [ipv4/] [netfilter/] [nf_nat_tftp.c] - Rev 8
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/* (C) 2001-2002 Magnus Boden <mb@ozaba.mine.nu> * * 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/moduleparam.h> #include <linux/udp.h> #include <net/netfilter/nf_nat_helper.h> #include <net/netfilter/nf_nat_rule.h> #include <net/netfilter/nf_conntrack_helper.h> #include <net/netfilter/nf_conntrack_expect.h> #include <linux/netfilter/nf_conntrack_tftp.h> MODULE_AUTHOR("Magnus Boden <mb@ozaba.mine.nu>"); MODULE_DESCRIPTION("TFTP NAT helper"); MODULE_LICENSE("GPL"); MODULE_ALIAS("ip_nat_tftp"); static unsigned int help(struct sk_buff *skb, enum ip_conntrack_info ctinfo, struct nf_conntrack_expect *exp) { struct nf_conn *ct = exp->master; exp->saved_proto.udp.port = ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.u.udp.port; exp->dir = IP_CT_DIR_REPLY; exp->expectfn = nf_nat_follow_master; if (nf_ct_expect_related(exp) != 0) return NF_DROP; return NF_ACCEPT; } static void __exit nf_nat_tftp_fini(void) { rcu_assign_pointer(nf_nat_tftp_hook, NULL); synchronize_rcu(); } static int __init nf_nat_tftp_init(void) { BUG_ON(nf_nat_tftp_hook != NULL); rcu_assign_pointer(nf_nat_tftp_hook, help); return 0; } module_init(nf_nat_tftp_init); module_exit(nf_nat_tftp_fini);