Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 1 | /* (C) 1999-2001 Paul `Rusty' Russell |
| 2 | * (C) 2002-2004 Netfilter Core Team <coreteam@netfilter.org> |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License version 2 as |
| 6 | * published by the Free Software Foundation. |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 7 | */ |
| 8 | |
| 9 | #include <linux/types.h> |
Tim Schmielau | cd354f1 | 2007-02-14 00:33:14 -0800 | [diff] [blame] | 10 | #include <linux/jiffies.h> |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 11 | #include <linux/timer.h> |
| 12 | #include <linux/netfilter.h> |
Martin Josefsson | 605dcad | 2006-11-29 02:35:06 +0100 | [diff] [blame] | 13 | #include <net/netfilter/nf_conntrack_l4proto.h> |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 14 | |
Patrick McHardy | 933a41e | 2006-11-29 02:35:18 +0100 | [diff] [blame] | 15 | static unsigned int nf_ct_generic_timeout __read_mostly = 600*HZ; |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 16 | |
Jan Engelhardt | 09f263c | 2008-04-14 11:15:53 +0200 | [diff] [blame] | 17 | static bool generic_pkt_to_tuple(const struct sk_buff *skb, |
| 18 | unsigned int dataoff, |
| 19 | struct nf_conntrack_tuple *tuple) |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 20 | { |
| 21 | tuple->src.u.all = 0; |
| 22 | tuple->dst.u.all = 0; |
| 23 | |
Jan Engelhardt | 09f263c | 2008-04-14 11:15:53 +0200 | [diff] [blame] | 24 | return true; |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 25 | } |
| 26 | |
Jan Engelhardt | 09f263c | 2008-04-14 11:15:53 +0200 | [diff] [blame] | 27 | static bool generic_invert_tuple(struct nf_conntrack_tuple *tuple, |
| 28 | const struct nf_conntrack_tuple *orig) |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 29 | { |
| 30 | tuple->src.u.all = 0; |
| 31 | tuple->dst.u.all = 0; |
| 32 | |
Jan Engelhardt | 09f263c | 2008-04-14 11:15:53 +0200 | [diff] [blame] | 33 | return true; |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 34 | } |
| 35 | |
| 36 | /* Print out the per-protocol part of the tuple. */ |
| 37 | static int generic_print_tuple(struct seq_file *s, |
| 38 | const struct nf_conntrack_tuple *tuple) |
| 39 | { |
| 40 | return 0; |
| 41 | } |
| 42 | |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 43 | /* Returns verdict for packet, or -1 for invalid. */ |
Patrick McHardy | c88130b | 2008-01-31 04:42:11 -0800 | [diff] [blame] | 44 | static int packet(struct nf_conn *ct, |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 45 | const struct sk_buff *skb, |
| 46 | unsigned int dataoff, |
| 47 | enum ip_conntrack_info ctinfo, |
Jan Engelhardt | 76108ce | 2008-10-08 11:35:00 +0200 | [diff] [blame] | 48 | u_int8_t pf, |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 49 | unsigned int hooknum) |
| 50 | { |
Patrick McHardy | c88130b | 2008-01-31 04:42:11 -0800 | [diff] [blame] | 51 | nf_ct_refresh_acct(ct, ctinfo, skb, nf_ct_generic_timeout); |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 52 | return NF_ACCEPT; |
| 53 | } |
| 54 | |
| 55 | /* Called when a new connection for this protocol found. */ |
Jan Engelhardt | 09f263c | 2008-04-14 11:15:53 +0200 | [diff] [blame] | 56 | static bool new(struct nf_conn *ct, const struct sk_buff *skb, |
| 57 | unsigned int dataoff) |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 58 | { |
Jan Engelhardt | 09f263c | 2008-04-14 11:15:53 +0200 | [diff] [blame] | 59 | return true; |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 60 | } |
| 61 | |
Patrick McHardy | 933a41e | 2006-11-29 02:35:18 +0100 | [diff] [blame] | 62 | #ifdef CONFIG_SYSCTL |
| 63 | static struct ctl_table_header *generic_sysctl_header; |
| 64 | static struct ctl_table generic_sysctl_table[] = { |
| 65 | { |
Patrick McHardy | 933a41e | 2006-11-29 02:35:18 +0100 | [diff] [blame] | 66 | .procname = "nf_conntrack_generic_timeout", |
| 67 | .data = &nf_ct_generic_timeout, |
| 68 | .maxlen = sizeof(unsigned int), |
| 69 | .mode = 0644, |
Alexey Dobriyan | 6d9f239 | 2008-11-03 18:21:05 -0800 | [diff] [blame] | 70 | .proc_handler = proc_dointvec_jiffies, |
Patrick McHardy | 933a41e | 2006-11-29 02:35:18 +0100 | [diff] [blame] | 71 | }, |
| 72 | { |
| 73 | .ctl_name = 0 |
| 74 | } |
| 75 | }; |
Patrick McHardy | a999e68 | 2006-11-29 02:35:20 +0100 | [diff] [blame] | 76 | #ifdef CONFIG_NF_CONNTRACK_PROC_COMPAT |
| 77 | static struct ctl_table generic_compat_sysctl_table[] = { |
| 78 | { |
Patrick McHardy | a999e68 | 2006-11-29 02:35:20 +0100 | [diff] [blame] | 79 | .procname = "ip_conntrack_generic_timeout", |
| 80 | .data = &nf_ct_generic_timeout, |
| 81 | .maxlen = sizeof(unsigned int), |
| 82 | .mode = 0644, |
Alexey Dobriyan | 6d9f239 | 2008-11-03 18:21:05 -0800 | [diff] [blame] | 83 | .proc_handler = proc_dointvec_jiffies, |
Patrick McHardy | a999e68 | 2006-11-29 02:35:20 +0100 | [diff] [blame] | 84 | }, |
| 85 | { |
| 86 | .ctl_name = 0 |
| 87 | } |
| 88 | }; |
| 89 | #endif /* CONFIG_NF_CONNTRACK_PROC_COMPAT */ |
Patrick McHardy | 933a41e | 2006-11-29 02:35:18 +0100 | [diff] [blame] | 90 | #endif /* CONFIG_SYSCTL */ |
| 91 | |
Patrick McHardy | 61075af | 2007-07-14 20:48:19 -0700 | [diff] [blame] | 92 | struct nf_conntrack_l4proto nf_conntrack_l4proto_generic __read_mostly = |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 93 | { |
| 94 | .l3proto = PF_UNSPEC, |
Martin Josefsson | 605dcad | 2006-11-29 02:35:06 +0100 | [diff] [blame] | 95 | .l4proto = 0, |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 96 | .name = "unknown", |
| 97 | .pkt_to_tuple = generic_pkt_to_tuple, |
| 98 | .invert_tuple = generic_invert_tuple, |
| 99 | .print_tuple = generic_print_tuple, |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 100 | .packet = packet, |
| 101 | .new = new, |
Patrick McHardy | 933a41e | 2006-11-29 02:35:18 +0100 | [diff] [blame] | 102 | #ifdef CONFIG_SYSCTL |
| 103 | .ctl_table_header = &generic_sysctl_header, |
| 104 | .ctl_table = generic_sysctl_table, |
Patrick McHardy | a999e68 | 2006-11-29 02:35:20 +0100 | [diff] [blame] | 105 | #ifdef CONFIG_NF_CONNTRACK_PROC_COMPAT |
| 106 | .ctl_compat_table = generic_compat_sysctl_table, |
| 107 | #endif |
Patrick McHardy | 933a41e | 2006-11-29 02:35:18 +0100 | [diff] [blame] | 108 | #endif |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 109 | }; |