Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C)2003,2004 USAGI/WIDE Project |
| 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. |
| 7 | * |
| 8 | * Author: |
| 9 | * Yasuyuki Kozakai @USAGI <yasuyuki.kozakai@toshiba.co.jp> |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 10 | */ |
| 11 | |
| 12 | #include <linux/types.h> |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 13 | #include <linux/timer.h> |
| 14 | #include <linux/module.h> |
| 15 | #include <linux/netfilter.h> |
| 16 | #include <linux/in6.h> |
| 17 | #include <linux/icmpv6.h> |
| 18 | #include <linux/ipv6.h> |
| 19 | #include <net/ipv6.h> |
| 20 | #include <net/ip6_checksum.h> |
| 21 | #include <linux/seq_file.h> |
| 22 | #include <linux/netfilter_ipv6.h> |
| 23 | #include <net/netfilter/nf_conntrack_tuple.h> |
Martin Josefsson | 605dcad | 2006-11-29 02:35:06 +0100 | [diff] [blame] | 24 | #include <net/netfilter/nf_conntrack_l4proto.h> |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 25 | #include <net/netfilter/nf_conntrack_core.h> |
| 26 | #include <net/netfilter/ipv6/nf_conntrack_icmpv6.h> |
Patrick McHardy | f01ffbd | 2007-12-17 22:38:49 -0800 | [diff] [blame] | 27 | #include <net/netfilter/nf_log.h> |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 28 | |
Patrick McHardy | 71320af | 2009-01-12 00:06:07 +0000 | [diff] [blame] | 29 | static unsigned int nf_ct_icmpv6_timeout __read_mostly = 30*HZ; |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 30 | |
Jan Engelhardt | 09f263c | 2008-04-14 11:15:53 +0200 | [diff] [blame] | 31 | static bool icmpv6_pkt_to_tuple(const struct sk_buff *skb, |
| 32 | unsigned int dataoff, |
| 33 | struct nf_conntrack_tuple *tuple) |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 34 | { |
Jan Engelhardt | 7cc3864 | 2008-01-31 04:53:05 -0800 | [diff] [blame] | 35 | const struct icmp6hdr *hp; |
| 36 | struct icmp6hdr _hdr; |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 37 | |
| 38 | hp = skb_header_pointer(skb, dataoff, sizeof(_hdr), &_hdr); |
| 39 | if (hp == NULL) |
Jan Engelhardt | 09f263c | 2008-04-14 11:15:53 +0200 | [diff] [blame] | 40 | return false; |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 41 | tuple->dst.u.icmp.type = hp->icmp6_type; |
| 42 | tuple->src.u.icmp.id = hp->icmp6_identifier; |
| 43 | tuple->dst.u.icmp.code = hp->icmp6_code; |
| 44 | |
Jan Engelhardt | 09f263c | 2008-04-14 11:15:53 +0200 | [diff] [blame] | 45 | return true; |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 46 | } |
| 47 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 48 | /* Add 1; spaces filled with 0. */ |
Jan Engelhardt | 7cc3864 | 2008-01-31 04:53:05 -0800 | [diff] [blame] | 49 | static const u_int8_t invmap[] = { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 50 | [ICMPV6_ECHO_REQUEST - 128] = ICMPV6_ECHO_REPLY + 1, |
| 51 | [ICMPV6_ECHO_REPLY - 128] = ICMPV6_ECHO_REQUEST + 1, |
Eric Leblond | a51f42f | 2009-02-09 14:33:03 -0800 | [diff] [blame] | 52 | [ICMPV6_NI_QUERY - 128] = ICMPV6_NI_REPLY + 1, |
| 53 | [ICMPV6_NI_REPLY - 128] = ICMPV6_NI_QUERY +1 |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 54 | }; |
| 55 | |
Eric Leblond | 3f90071 | 2009-02-09 14:33:20 -0800 | [diff] [blame] | 56 | static const u_int8_t noct_valid_new[] = { |
| 57 | [ICMPV6_MGM_QUERY - 130] = 1, |
| 58 | [ICMPV6_MGM_REPORT -130] = 1, |
| 59 | [ICMPV6_MGM_REDUCTION - 130] = 1, |
| 60 | [NDISC_ROUTER_SOLICITATION - 130] = 1, |
| 61 | [NDISC_ROUTER_ADVERTISEMENT - 130] = 1, |
| 62 | [NDISC_NEIGHBOUR_SOLICITATION - 130] = 1, |
| 63 | [NDISC_NEIGHBOUR_ADVERTISEMENT - 130] = 1, |
| 64 | [ICMPV6_MLD2_REPORT - 130] = 1 |
| 65 | }; |
| 66 | |
Jan Engelhardt | 09f263c | 2008-04-14 11:15:53 +0200 | [diff] [blame] | 67 | static bool icmpv6_invert_tuple(struct nf_conntrack_tuple *tuple, |
| 68 | const struct nf_conntrack_tuple *orig) |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 69 | { |
Yasuyuki Kozakai | f16c910 | 2005-12-05 13:32:50 -0800 | [diff] [blame] | 70 | int type = orig->dst.u.icmp.type - 128; |
| 71 | if (type < 0 || type >= sizeof(invmap) || !invmap[type]) |
Jan Engelhardt | 09f263c | 2008-04-14 11:15:53 +0200 | [diff] [blame] | 72 | return false; |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 73 | |
| 74 | tuple->src.u.icmp.id = orig->src.u.icmp.id; |
| 75 | tuple->dst.u.icmp.type = invmap[type] - 1; |
| 76 | tuple->dst.u.icmp.code = orig->dst.u.icmp.code; |
Jan Engelhardt | 09f263c | 2008-04-14 11:15:53 +0200 | [diff] [blame] | 77 | return true; |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 78 | } |
| 79 | |
| 80 | /* Print out the per-protocol part of the tuple. */ |
| 81 | static int icmpv6_print_tuple(struct seq_file *s, |
| 82 | const struct nf_conntrack_tuple *tuple) |
| 83 | { |
| 84 | return seq_printf(s, "type=%u code=%u id=%u ", |
| 85 | tuple->dst.u.icmp.type, |
| 86 | tuple->dst.u.icmp.code, |
| 87 | ntohs(tuple->src.u.icmp.id)); |
| 88 | } |
| 89 | |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 90 | /* Returns verdict for packet, or -1 for invalid. */ |
| 91 | static int icmpv6_packet(struct nf_conn *ct, |
| 92 | const struct sk_buff *skb, |
| 93 | unsigned int dataoff, |
| 94 | enum ip_conntrack_info ctinfo, |
Jan Engelhardt | 76108ce | 2008-10-08 11:35:00 +0200 | [diff] [blame] | 95 | u_int8_t pf, |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 96 | unsigned int hooknum) |
| 97 | { |
Jan Kasprzak | f87fb66 | 2009-06-08 15:53:43 +0200 | [diff] [blame] | 98 | /* Do not immediately delete the connection after the first |
| 99 | successful reply to avoid excessive conntrackd traffic |
| 100 | and also to handle correctly ICMP echo reply duplicates. */ |
| 101 | nf_ct_refresh_acct(ct, ctinfo, skb, nf_ct_icmpv6_timeout); |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 102 | |
| 103 | return NF_ACCEPT; |
| 104 | } |
| 105 | |
| 106 | /* Called when a new connection for this protocol found. */ |
Jan Engelhardt | 09f263c | 2008-04-14 11:15:53 +0200 | [diff] [blame] | 107 | static bool icmpv6_new(struct nf_conn *ct, const struct sk_buff *skb, |
| 108 | unsigned int dataoff) |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 109 | { |
Jan Engelhardt | 7cc3864 | 2008-01-31 04:53:05 -0800 | [diff] [blame] | 110 | static const u_int8_t valid_new[] = { |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 111 | [ICMPV6_ECHO_REQUEST - 128] = 1, |
| 112 | [ICMPV6_NI_QUERY - 128] = 1 |
| 113 | }; |
Patrick McHardy | c88130b | 2008-01-31 04:42:11 -0800 | [diff] [blame] | 114 | int type = ct->tuplehash[0].tuple.dst.u.icmp.type - 128; |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 115 | |
Yasuyuki Kozakai | f16c910 | 2005-12-05 13:32:50 -0800 | [diff] [blame] | 116 | if (type < 0 || type >= sizeof(valid_new) || !valid_new[type]) { |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 117 | /* Can't create a new ICMPv6 `conn' with this. */ |
Patrick McHardy | 0d53778 | 2007-07-07 22:39:38 -0700 | [diff] [blame] | 118 | pr_debug("icmpv6: can't create new conn with type %u\n", |
| 119 | type + 128); |
Jan Engelhardt | 3c9fba6 | 2008-04-14 11:15:54 +0200 | [diff] [blame] | 120 | nf_ct_dump_tuple_ipv6(&ct->tuplehash[0].tuple); |
Eric Leblond | 55df4ac | 2009-02-18 16:30:56 +0100 | [diff] [blame] | 121 | if (LOG_INVALID(nf_ct_net(ct), IPPROTO_ICMPV6)) |
| 122 | nf_log_packet(PF_INET6, 0, skb, NULL, NULL, NULL, |
| 123 | "nf_ct_icmpv6: invalid new with type %d ", |
| 124 | type + 128); |
Jan Engelhardt | 09f263c | 2008-04-14 11:15:53 +0200 | [diff] [blame] | 125 | return false; |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 126 | } |
Jan Engelhardt | 09f263c | 2008-04-14 11:15:53 +0200 | [diff] [blame] | 127 | return true; |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 128 | } |
| 129 | |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 130 | static int |
Alexey Dobriyan | 74c51a1 | 2008-10-08 11:35:05 +0200 | [diff] [blame] | 131 | icmpv6_error_message(struct net *net, |
| 132 | struct sk_buff *skb, |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 133 | unsigned int icmp6off, |
| 134 | enum ip_conntrack_info *ctinfo, |
| 135 | unsigned int hooknum) |
| 136 | { |
| 137 | struct nf_conntrack_tuple intuple, origtuple; |
Jan Engelhardt | 7cc3864 | 2008-01-31 04:53:05 -0800 | [diff] [blame] | 138 | const struct nf_conntrack_tuple_hash *h; |
| 139 | const struct nf_conntrack_l4proto *inproto; |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 140 | |
| 141 | NF_CT_ASSERT(skb->nfct == NULL); |
| 142 | |
Yasuyuki Kozakai | e2a3123 | 2007-07-14 20:45:14 -0700 | [diff] [blame] | 143 | /* Are they talking about one of our connections? */ |
| 144 | if (!nf_ct_get_tuplepr(skb, |
| 145 | skb_network_offset(skb) |
| 146 | + sizeof(struct ipv6hdr) |
| 147 | + sizeof(struct icmp6hdr), |
| 148 | PF_INET6, &origtuple)) { |
| 149 | pr_debug("icmpv6_error: Can't get tuple\n"); |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 150 | return -NF_ACCEPT; |
| 151 | } |
| 152 | |
Patrick McHardy | 923f490 | 2007-02-12 11:12:57 -0800 | [diff] [blame] | 153 | /* rcu_read_lock()ed by nf_hook_slow */ |
Yasuyuki Kozakai | e2a3123 | 2007-07-14 20:45:14 -0700 | [diff] [blame] | 154 | inproto = __nf_ct_l4proto_find(PF_INET6, origtuple.dst.protonum); |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 155 | |
| 156 | /* Ordinarily, we'd expect the inverted tupleproto, but it's |
| 157 | been preserved inside the ICMP. */ |
| 158 | if (!nf_ct_invert_tuple(&intuple, &origtuple, |
| 159 | &nf_conntrack_l3proto_ipv6, inproto)) { |
Patrick McHardy | 0d53778 | 2007-07-07 22:39:38 -0700 | [diff] [blame] | 160 | pr_debug("icmpv6_error: Can't invert tuple\n"); |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 161 | return -NF_ACCEPT; |
| 162 | } |
| 163 | |
| 164 | *ctinfo = IP_CT_RELATED; |
| 165 | |
Alexey Dobriyan | 74c51a1 | 2008-10-08 11:35:05 +0200 | [diff] [blame] | 166 | h = nf_conntrack_find_get(net, &intuple); |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 167 | if (!h) { |
Patrick McHardy | 0d53778 | 2007-07-07 22:39:38 -0700 | [diff] [blame] | 168 | pr_debug("icmpv6_error: no match\n"); |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 169 | return -NF_ACCEPT; |
| 170 | } else { |
| 171 | if (NF_CT_DIRECTION(h) == IP_CT_DIR_REPLY) |
| 172 | *ctinfo += IP_CT_IS_REPLY; |
| 173 | } |
| 174 | |
| 175 | /* Update skb to refer to this connection */ |
| 176 | skb->nfct = &nf_ct_tuplehash_to_ctrack(h)->ct_general; |
| 177 | skb->nfctinfo = *ctinfo; |
| 178 | return -NF_ACCEPT; |
| 179 | } |
| 180 | |
| 181 | static int |
Alexey Dobriyan | 74c51a1 | 2008-10-08 11:35:05 +0200 | [diff] [blame] | 182 | icmpv6_error(struct net *net, struct sk_buff *skb, unsigned int dataoff, |
Jan Engelhardt | 76108ce | 2008-10-08 11:35:00 +0200 | [diff] [blame] | 183 | enum ip_conntrack_info *ctinfo, u_int8_t pf, unsigned int hooknum) |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 184 | { |
Jan Engelhardt | 7cc3864 | 2008-01-31 04:53:05 -0800 | [diff] [blame] | 185 | const struct icmp6hdr *icmp6h; |
| 186 | struct icmp6hdr _ih; |
Eric Leblond | 3f90071 | 2009-02-09 14:33:20 -0800 | [diff] [blame] | 187 | int type; |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 188 | |
| 189 | icmp6h = skb_header_pointer(skb, dataoff, sizeof(_ih), &_ih); |
| 190 | if (icmp6h == NULL) { |
Alexey Dobriyan | c2a2c7e | 2008-10-08 11:35:08 +0200 | [diff] [blame] | 191 | if (LOG_INVALID(net, IPPROTO_ICMPV6)) |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 192 | nf_log_packet(PF_INET6, 0, skb, NULL, NULL, NULL, |
| 193 | "nf_ct_icmpv6: short packet "); |
| 194 | return -NF_ACCEPT; |
| 195 | } |
| 196 | |
Alexey Dobriyan | c04d055 | 2008-10-08 11:35:08 +0200 | [diff] [blame] | 197 | if (net->ct.sysctl_checksum && hooknum == NF_INET_PRE_ROUTING && |
Patrick McHardy | 96f6bf8 | 2006-04-06 14:19:24 -0700 | [diff] [blame] | 198 | nf_ip6_checksum(skb, hooknum, dataoff, IPPROTO_ICMPV6)) { |
Eric Leblond | 4aa3b2e | 2009-02-18 15:28:46 +0100 | [diff] [blame] | 199 | if (LOG_INVALID(net, IPPROTO_ICMPV6)) |
| 200 | nf_log_packet(PF_INET6, 0, skb, NULL, NULL, NULL, |
| 201 | "nf_ct_icmpv6: ICMPv6 checksum failed "); |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 202 | return -NF_ACCEPT; |
| 203 | } |
| 204 | |
Eric Leblond | 3f90071 | 2009-02-09 14:33:20 -0800 | [diff] [blame] | 205 | type = icmp6h->icmp6_type - 130; |
| 206 | if (type >= 0 && type < sizeof(noct_valid_new) && |
| 207 | noct_valid_new[type]) { |
| 208 | skb->nfct = &nf_conntrack_untracked.ct_general; |
| 209 | skb->nfctinfo = IP_CT_NEW; |
| 210 | nf_conntrack_get(skb->nfct); |
| 211 | return NF_ACCEPT; |
| 212 | } |
| 213 | |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 214 | /* is not error message ? */ |
| 215 | if (icmp6h->icmp6_type >= 128) |
| 216 | return NF_ACCEPT; |
| 217 | |
Alexey Dobriyan | 74c51a1 | 2008-10-08 11:35:05 +0200 | [diff] [blame] | 218 | return icmpv6_error_message(net, skb, dataoff, ctinfo, hooknum); |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 219 | } |
| 220 | |
Patrick McHardy | e281db5c | 2007-03-04 15:57:25 -0800 | [diff] [blame] | 221 | #if defined(CONFIG_NF_CT_NETLINK) || defined(CONFIG_NF_CT_NETLINK_MODULE) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 222 | |
| 223 | #include <linux/netfilter/nfnetlink.h> |
| 224 | #include <linux/netfilter/nfnetlink_conntrack.h> |
Patrick McHardy | fdf7083 | 2007-09-28 14:37:41 -0700 | [diff] [blame] | 225 | static int icmpv6_tuple_to_nlattr(struct sk_buff *skb, |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 226 | const struct nf_conntrack_tuple *t) |
| 227 | { |
Patrick McHardy | 77236b6 | 2007-12-17 22:29:45 -0800 | [diff] [blame] | 228 | NLA_PUT_BE16(skb, CTA_PROTO_ICMPV6_ID, t->src.u.icmp.id); |
| 229 | NLA_PUT_U8(skb, CTA_PROTO_ICMPV6_TYPE, t->dst.u.icmp.type); |
| 230 | NLA_PUT_U8(skb, CTA_PROTO_ICMPV6_CODE, t->dst.u.icmp.code); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 231 | |
| 232 | return 0; |
| 233 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 234 | nla_put_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 235 | return -1; |
| 236 | } |
| 237 | |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 238 | static const struct nla_policy icmpv6_nla_policy[CTA_PROTO_MAX+1] = { |
| 239 | [CTA_PROTO_ICMPV6_TYPE] = { .type = NLA_U8 }, |
| 240 | [CTA_PROTO_ICMPV6_CODE] = { .type = NLA_U8 }, |
| 241 | [CTA_PROTO_ICMPV6_ID] = { .type = NLA_U16 }, |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 242 | }; |
| 243 | |
Patrick McHardy | fdf7083 | 2007-09-28 14:37:41 -0700 | [diff] [blame] | 244 | static int icmpv6_nlattr_to_tuple(struct nlattr *tb[], |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 245 | struct nf_conntrack_tuple *tuple) |
| 246 | { |
Joe Perches | 3666ed1 | 2009-11-23 23:17:06 +0100 | [diff] [blame] | 247 | if (!tb[CTA_PROTO_ICMPV6_TYPE] || |
| 248 | !tb[CTA_PROTO_ICMPV6_CODE] || |
| 249 | !tb[CTA_PROTO_ICMPV6_ID]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 250 | return -EINVAL; |
| 251 | |
Patrick McHardy | 77236b6 | 2007-12-17 22:29:45 -0800 | [diff] [blame] | 252 | tuple->dst.u.icmp.type = nla_get_u8(tb[CTA_PROTO_ICMPV6_TYPE]); |
| 253 | tuple->dst.u.icmp.code = nla_get_u8(tb[CTA_PROTO_ICMPV6_CODE]); |
| 254 | tuple->src.u.icmp.id = nla_get_be16(tb[CTA_PROTO_ICMPV6_ID]); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 255 | |
Joe Perches | 3666ed1 | 2009-11-23 23:17:06 +0100 | [diff] [blame] | 256 | if (tuple->dst.u.icmp.type < 128 || |
| 257 | tuple->dst.u.icmp.type - 128 >= sizeof(invmap) || |
| 258 | !invmap[tuple->dst.u.icmp.type - 128]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 259 | return -EINVAL; |
| 260 | |
| 261 | return 0; |
| 262 | } |
Holger Eitzenberger | a400c30 | 2009-03-25 21:53:39 +0100 | [diff] [blame] | 263 | |
| 264 | static int icmpv6_nlattr_tuple_size(void) |
| 265 | { |
| 266 | return nla_policy_len(icmpv6_nla_policy, CTA_PROTO_MAX + 1); |
| 267 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 268 | #endif |
| 269 | |
Patrick McHardy | 933a41e | 2006-11-29 02:35:18 +0100 | [diff] [blame] | 270 | #ifdef CONFIG_SYSCTL |
| 271 | static struct ctl_table_header *icmpv6_sysctl_header; |
| 272 | static struct ctl_table icmpv6_sysctl_table[] = { |
| 273 | { |
Patrick McHardy | 933a41e | 2006-11-29 02:35:18 +0100 | [diff] [blame] | 274 | .procname = "nf_conntrack_icmpv6_timeout", |
| 275 | .data = &nf_ct_icmpv6_timeout, |
| 276 | .maxlen = sizeof(unsigned int), |
| 277 | .mode = 0644, |
Alexey Dobriyan | 6d9f239 | 2008-11-03 18:21:05 -0800 | [diff] [blame] | 278 | .proc_handler = proc_dointvec_jiffies, |
Patrick McHardy | 933a41e | 2006-11-29 02:35:18 +0100 | [diff] [blame] | 279 | }, |
Eric W. Biederman | f8572d8 | 2009-11-05 13:32:03 -0800 | [diff] [blame] | 280 | { } |
Patrick McHardy | 933a41e | 2006-11-29 02:35:18 +0100 | [diff] [blame] | 281 | }; |
| 282 | #endif /* CONFIG_SYSCTL */ |
| 283 | |
Patrick McHardy | 61075af | 2007-07-14 20:48:19 -0700 | [diff] [blame] | 284 | struct nf_conntrack_l4proto nf_conntrack_l4proto_icmpv6 __read_mostly = |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 285 | { |
| 286 | .l3proto = PF_INET6, |
Martin Josefsson | 605dcad | 2006-11-29 02:35:06 +0100 | [diff] [blame] | 287 | .l4proto = IPPROTO_ICMPV6, |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 288 | .name = "icmpv6", |
| 289 | .pkt_to_tuple = icmpv6_pkt_to_tuple, |
| 290 | .invert_tuple = icmpv6_invert_tuple, |
| 291 | .print_tuple = icmpv6_print_tuple, |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 292 | .packet = icmpv6_packet, |
| 293 | .new = icmpv6_new, |
| 294 | .error = icmpv6_error, |
Patrick McHardy | e281db5c | 2007-03-04 15:57:25 -0800 | [diff] [blame] | 295 | #if defined(CONFIG_NF_CT_NETLINK) || defined(CONFIG_NF_CT_NETLINK_MODULE) |
Patrick McHardy | fdf7083 | 2007-09-28 14:37:41 -0700 | [diff] [blame] | 296 | .tuple_to_nlattr = icmpv6_tuple_to_nlattr, |
Holger Eitzenberger | a400c30 | 2009-03-25 21:53:39 +0100 | [diff] [blame] | 297 | .nlattr_tuple_size = icmpv6_nlattr_tuple_size, |
Patrick McHardy | fdf7083 | 2007-09-28 14:37:41 -0700 | [diff] [blame] | 298 | .nlattr_to_tuple = icmpv6_nlattr_to_tuple, |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 299 | .nla_policy = icmpv6_nla_policy, |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 300 | #endif |
Patrick McHardy | 933a41e | 2006-11-29 02:35:18 +0100 | [diff] [blame] | 301 | #ifdef CONFIG_SYSCTL |
| 302 | .ctl_table_header = &icmpv6_sysctl_header, |
| 303 | .ctl_table = icmpv6_sysctl_table, |
| 304 | #endif |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 305 | }; |