Release 4.15 net/netfilter/nf_nat_tftp.c

/* (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/udp.h>

#include <net/netfilter/nf_conntrack_helper.h>
#include <net/netfilter/nf_conntrack_expect.h>
#include <net/netfilter/nf_nat_helper.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)
{
	const 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) {
		nf_ct_helper_log(skb, exp->master, "cannot add expectation");
		return NF_DROP;
	}
	return NF_ACCEPT;
}

Contributors
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Prop
Commits
CommitProp
Patrick McHardy
81
84.38%
2
40.00%
Pablo Neira Ayuso
13
13.54%
1
20.00%
Jan Engelhardt
1
1.04%
1
20.00%
Herbert Xu
1
1.04%
1
20.00%
Total
96
100.00%
5
100.00%



static void __exit nf_nat_tftp_fini(void)
{
	RCU_INIT_POINTER(nf_nat_tftp_hook, NULL);
	synchronize_rcu();
}

Contributors
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CommitProp
Patrick McHardy
18
94.74%
1
50.00%
Stephen Hemminger
1
5.26%
1
50.00%
Total
19
100.00%
2
100.00%



static int __init nf_nat_tftp_init(void)
{
	BUG_ON(nf_nat_tftp_hook != NULL);
	RCU_INIT_POINTER(nf_nat_tftp_hook, help);
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Patrick McHardy
25
96.15%
2
66.67%
Stephen Hemminger
1
3.85%
1
33.33%
Total
26
100.00%
3
100.00%


module_init(nf_nat_tftp_init);

module_exit(nf_nat_tftp_fini);
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Patrick McHardy
170
89.47%
3
37.50%
Pablo Neira Ayuso
16
8.42%
2
25.00%
Stephen Hemminger
2
1.05%
1
12.50%
Herbert Xu
1
0.53%
1
12.50%
Jan Engelhardt
1
0.53%
1
12.50%
Total
190
100.00%
8
100.00%
Directory: net/netfilter

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