Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* The "unknown" protocol. This is what is used for protocols we |
| 2 | * don't understand. It's returned by ip_ct_find_proto(). |
| 3 | */ |
| 4 | |
| 5 | /* (C) 1999-2001 Paul `Rusty' Russell |
| 6 | * (C) 2002-2004 Netfilter Core Team <coreteam@netfilter.org> |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License version 2 as |
| 10 | * published by the Free Software Foundation. |
| 11 | */ |
| 12 | |
| 13 | #include <linux/types.h> |
| 14 | #include <linux/init.h> |
| 15 | #include <linux/netfilter.h> |
| 16 | #include <linux/if.h> |
| 17 | |
| 18 | #include <linux/netfilter_ipv4/ip_nat.h> |
| 19 | #include <linux/netfilter_ipv4/ip_nat_rule.h> |
| 20 | #include <linux/netfilter_ipv4/ip_nat_protocol.h> |
| 21 | |
| 22 | static int unknown_in_range(const struct ip_conntrack_tuple *tuple, |
| 23 | enum ip_nat_manip_type manip_type, |
| 24 | const union ip_conntrack_manip_proto *min, |
| 25 | const union ip_conntrack_manip_proto *max) |
| 26 | { |
| 27 | return 1; |
| 28 | } |
| 29 | |
| 30 | static int unknown_unique_tuple(struct ip_conntrack_tuple *tuple, |
| 31 | const struct ip_nat_range *range, |
| 32 | enum ip_nat_manip_type maniptype, |
| 33 | const struct ip_conntrack *conntrack) |
| 34 | { |
| 35 | /* Sorry: we can't help you; if it's not unique, we can't frob |
| 36 | anything. */ |
| 37 | return 0; |
| 38 | } |
| 39 | |
| 40 | static int |
| 41 | unknown_manip_pkt(struct sk_buff **pskb, |
| 42 | unsigned int iphdroff, |
| 43 | const struct ip_conntrack_tuple *tuple, |
| 44 | enum ip_nat_manip_type maniptype) |
| 45 | { |
| 46 | return 1; |
| 47 | } |
| 48 | |
| 49 | static unsigned int |
| 50 | unknown_print(char *buffer, |
| 51 | const struct ip_conntrack_tuple *match, |
| 52 | const struct ip_conntrack_tuple *mask) |
| 53 | { |
| 54 | return 0; |
| 55 | } |
| 56 | |
| 57 | static unsigned int |
| 58 | unknown_print_range(char *buffer, const struct ip_nat_range *range) |
| 59 | { |
| 60 | return 0; |
| 61 | } |
| 62 | |
| 63 | struct ip_nat_protocol ip_nat_unknown_protocol = { |
| 64 | "unknown", 0, |
| 65 | unknown_manip_pkt, |
| 66 | unknown_in_range, |
| 67 | unknown_unique_tuple, |
| 68 | unknown_print, |
| 69 | unknown_print_range |
| 70 | }; |