| | 1 | /* |
| | 2 | * (C) 2003,2004 USAGI/WIDE Project <http://www.linux-ipv6.org> |
| | 3 | * |
| | 4 | * Based largely upon the original ip_conntrack code which |
| | 5 | * had the following copyright information: |
| | 6 | * |
| | 7 | * (C) 1999-2001 Paul `Rusty' Russell |
| | 8 | * (C) 2002-2004 Netfilter Core Team <coreteam@netfilter.org> |
| | 9 | * |
| | 10 | * This program is free software; you can redistribute it and/or modify |
| | 11 | * it under the terms of the GNU General Public License version 2 as |
| | 12 | * published by the Free Software Foundation. |
| | 13 | * |
| | 14 | * Author: |
| | 15 | * Yasuyuki Kozakai @USAGI <yasuyuki.kozakai@toshiba.co.jp> |
| | 16 | */ |
| | 17 | |
| | 18 | #include <linux/types.h> |
| | 19 | #include <linux/ip.h> |
| | 20 | #include <linux/netfilter.h> |
| | 21 | #include <linux/module.h> |
| | 22 | #include <linux/skbuff.h> |
| | 23 | #include <linux/icmp.h> |
| | 24 | #include <linux/sysctl.h> |
| | 25 | #include <net/ip.h> |
| | 26 | |
| | 27 | #include <linux/netfilter_ipv4.h> |
| | 28 | #include <net/netfilter/nf_conntrack.h> |
| | 29 | #include <net/netfilter/nf_conntrack_l4proto.h> |
| | 30 | #include <net/netfilter/nf_conntrack_l3proto.h> |
| | 31 | #include <net/netfilter/nf_conntrack_core.h> |
| | 32 | #include <net/netfilter/ipv4/nf_conntrack_ipv4.h> |
| | 33 | |
| | 34 | static bool generic_pkt_to_tuple(const struct sk_buff *skb, unsigned int nhoff, |
| | 35 | struct nf_conntrack_tuple *tuple) |
| | 36 | { |
| | 37 | memset(&tuple->src.u3, 0, sizeof(tuple->src.u3)); |
| | 38 | memset(&tuple->dst.u3, 0, sizeof(tuple->dst.u3)); |
| | 39 | |
| | 40 | return true; |
| | 41 | } |
| | 42 | |
| | 43 | static bool generic_invert_tuple(struct nf_conntrack_tuple *tuple, |
| | 44 | const struct nf_conntrack_tuple *orig) |
| | 45 | { |
| | 46 | memset(&tuple->src.u3, 0, sizeof(tuple->src.u3)); |
| | 47 | memset(&tuple->dst.u3, 0, sizeof(tuple->dst.u3)); |
| | 48 | |
| | 49 | return true; |
| | 50 | } |
| | 51 | |
| | 52 | static void generic_print_tuple(struct seq_file *s, |
| | 53 | const struct nf_conntrack_tuple *tuple) |
| | 54 | { |
| | 55 | } |
| | 56 | |
| | 57 | static int generic_get_l4proto(const struct sk_buff *skb, unsigned int nhoff, |
| | 58 | unsigned int *dataoff, u_int8_t *protonum) |
| | 59 | { |
| | 60 | /* Never track !!! */ |
| | 61 | return -NF_ACCEPT; |
| | 62 | } |
| | 63 | |
| | 64 | |
| | 65 | struct nf_conntrack_l3proto nf_conntrack_l3proto_generic __read_mostly = { |
| | 66 | .l3proto = PF_UNSPEC, |
| | 67 | .name = "unknown", |
| | 68 | .pkt_to_tuple = generic_pkt_to_tuple, |
| | 69 | .invert_tuple = generic_invert_tuple, |
| | 70 | .print_tuple = generic_print_tuple, |
| | 71 | .get_l4proto = generic_get_l4proto, |
| | 72 | }; |
| | 73 | EXPORT_SYMBOL_GPL(nf_conntrack_l3proto_generic); |
projects / linux-2.6-block.git / blame_incremental