A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-29 19:21:31 -04:00
Code Issues Projects Releases Packages Wiki Activity

[NETFILTER]: nf_conntrack/nf_nat: add TFTP helper port

Browse source 
Add IPv4 and IPv6 capable nf_conntrack port of the TFTP conntrack/NAT helper.

Signed-off-by: Patrick McHardy <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Patrick McHardy 2006-12-02 22:10:18 -08:00 • committed by David S. Miller
commit a536df35b3
7 changed files with 249 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

5
net/ipv4/netfilter/Kconfig
View file

@ -515,6 +515,11 @@ config IP_NF_NAT_TFTP
default IP_NF_NAT if IP_NF_TFTP=y
default m if IP_NF_TFTP=m
config NF_NAT_TFTP
tristate
depends on IP_NF_IPTABLES && NF_CONNTRACK && NF_NAT
default NF_NAT && NF_CONNTRACK_TFTP
config IP_NF_NAT_AMANDA
tristate
depends on IP_NF_IPTABLES!=n && IP_NF_CONNTRACK!=n && IP_NF_NAT!=n

1
net/ipv4/netfilter/Makefile
View file

@ -56,6 +56,7 @@ obj-$(CONFIG_NF_NAT_H323) += nf_nat_h323.o
obj-$(CONFIG_NF_NAT_IRC) += nf_nat_irc.o
obj-$(CONFIG_NF_NAT_PPTP) += nf_nat_pptp.o
obj-$(CONFIG_NF_NAT_SIP) += nf_nat_sip.o
obj-$(CONFIG_NF_NAT_TFTP) += nf_nat_tftp.o
# NAT protocols (nf_nat)
obj-$(CONFIG_NF_NAT_PROTO_GRE) += nf_nat_proto_gre.o

52
net/ipv4/netfilter/nf_nat_tftp.c Normal file
View file

@ -0,0 +1,52 @@
/* (C) 2001-2002 Magnus Boden <[email protected]>
*
* 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 <[email protected]>");
MODULE_DESCRIPTION("TFTP NAT helper");
MODULE_LICENSE("GPL");
MODULE_ALIAS("ip_nat_tftp");
static unsigned int help(struct sk_buff **pskb,
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_conntrack_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(rcu_dereference(nf_nat_tftp_hook));
rcu_assign_pointer(nf_nat_tftp_hook, help);
return 0;
}
module_init(nf_nat_tftp_init);
module_exit(nf_nat_tftp_fini);