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https://github.com/team-infusion-developers/android_kernel_samsung_msm8976.git
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d2a7bb7141
The unknown protocol is used as a fallback when a protocol isn't known. Hence we cannot handle it failing, so don't set ".me". It's OK, since we only grab a reference from within the same module (iptable_nat.ko), so we never take the module refcount from 0 to 1. Also, remove the "protocol is NULL" test: it's never NULL. Signed-off-by: Rusty Rusty <rusty@rustcorp.com.au> Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
71 lines
1.9 KiB
C
71 lines
1.9 KiB
C
/* The "unknown" protocol. This is what is used for protocols we
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* don't understand. It's returned by ip_ct_find_proto().
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*/
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/* (C) 1999-2001 Paul `Rusty' Russell
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* (C) 2002-2004 Netfilter Core Team <coreteam@netfilter.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/types.h>
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#include <linux/init.h>
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#include <linux/netfilter.h>
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#include <linux/if.h>
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#include <linux/netfilter_ipv4/ip_nat.h>
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#include <linux/netfilter_ipv4/ip_nat_rule.h>
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#include <linux/netfilter_ipv4/ip_nat_protocol.h>
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static int unknown_in_range(const struct ip_conntrack_tuple *tuple,
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enum ip_nat_manip_type manip_type,
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const union ip_conntrack_manip_proto *min,
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const union ip_conntrack_manip_proto *max)
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{
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return 1;
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}
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static int unknown_unique_tuple(struct ip_conntrack_tuple *tuple,
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const struct ip_nat_range *range,
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enum ip_nat_manip_type maniptype,
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const struct ip_conntrack *conntrack)
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{
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/* Sorry: we can't help you; if it's not unique, we can't frob
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anything. */
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return 0;
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}
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static int
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unknown_manip_pkt(struct sk_buff **pskb,
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unsigned int iphdroff,
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const struct ip_conntrack_tuple *tuple,
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enum ip_nat_manip_type maniptype)
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{
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return 1;
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}
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static unsigned int
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unknown_print(char *buffer,
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const struct ip_conntrack_tuple *match,
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const struct ip_conntrack_tuple *mask)
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{
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return 0;
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}
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static unsigned int
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unknown_print_range(char *buffer, const struct ip_nat_range *range)
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{
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return 0;
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}
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struct ip_nat_protocol ip_nat_unknown_protocol = {
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.name = "unknown",
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/* .me isn't set: getting a ref to this cannot fail. */
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.manip_pkt = unknown_manip_pkt,
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.in_range = unknown_in_range,
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.unique_tuple = unknown_unique_tuple,
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.print = unknown_print,
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.print_range = unknown_print_range
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};
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