Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1 | /* Connection tracking via netlink socket. Allows for user space |
| 2 | * protocol helpers and general trouble making from userspace. |
| 3 | * |
| 4 | * (C) 2001 by Jay Schulist <jschlst@samba.org> |
Harald Welte | dc808fe | 2006-03-20 17:56:32 -0800 | [diff] [blame] | 5 | * (C) 2002-2006 by Harald Welte <laforge@gnumonks.org> |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 6 | * (C) 2003 by Patrick Mchardy <kaber@trash.net> |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 7 | * (C) 2005-2012 by Pablo Neira Ayuso <pablo@netfilter.org> |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 8 | * |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 9 | * Initial connection tracking via netlink development funded and |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 10 | * generally made possible by Network Robots, Inc. (www.networkrobots.com) |
| 11 | * |
| 12 | * Further development of this code funded by Astaro AG (http://www.astaro.com) |
| 13 | * |
| 14 | * This software may be used and distributed according to the terms |
| 15 | * of the GNU General Public License, incorporated herein by reference. |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 16 | */ |
| 17 | |
| 18 | #include <linux/init.h> |
| 19 | #include <linux/module.h> |
| 20 | #include <linux/kernel.h> |
Ingo Molnar | 711bbdd | 2008-05-17 08:26:25 +0200 | [diff] [blame] | 21 | #include <linux/rculist.h> |
Eric Dumazet | ea781f1 | 2009-03-25 21:05:46 +0100 | [diff] [blame] | 22 | #include <linux/rculist_nulls.h> |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 23 | #include <linux/types.h> |
| 24 | #include <linux/timer.h> |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 25 | #include <linux/security.h> |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 26 | #include <linux/skbuff.h> |
| 27 | #include <linux/errno.h> |
| 28 | #include <linux/netlink.h> |
| 29 | #include <linux/spinlock.h> |
Yasuyuki Kozakai | 40a839f | 2006-06-27 03:00:35 -0700 | [diff] [blame] | 30 | #include <linux/interrupt.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 31 | #include <linux/slab.h> |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 32 | |
| 33 | #include <linux/netfilter.h> |
Arnaldo Carvalho de Melo | dc5fc57 | 2007-03-25 23:06:12 -0700 | [diff] [blame] | 34 | #include <net/netlink.h> |
Alexey Dobriyan | 9592a5c | 2010-01-13 16:04:18 +0100 | [diff] [blame] | 35 | #include <net/sock.h> |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 36 | #include <net/netfilter/nf_conntrack.h> |
| 37 | #include <net/netfilter/nf_conntrack_core.h> |
Martin Josefsson | 77ab9cf | 2006-11-29 02:34:58 +0100 | [diff] [blame] | 38 | #include <net/netfilter/nf_conntrack_expect.h> |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 39 | #include <net/netfilter/nf_conntrack_helper.h> |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 40 | #include <net/netfilter/nf_conntrack_seqadj.h> |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 41 | #include <net/netfilter/nf_conntrack_l3proto.h> |
Martin Josefsson | 605dcad | 2006-11-29 02:35:06 +0100 | [diff] [blame] | 42 | #include <net/netfilter/nf_conntrack_l4proto.h> |
Jozsef Kadlecsik | 5b1158e | 2006-12-02 22:07:13 -0800 | [diff] [blame] | 43 | #include <net/netfilter/nf_conntrack_tuple.h> |
Krzysztof Piotr Oledzki | 5840157 | 2008-07-21 10:01:34 -0700 | [diff] [blame] | 44 | #include <net/netfilter/nf_conntrack_acct.h> |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 45 | #include <net/netfilter/nf_conntrack_zones.h> |
Pablo Neira Ayuso | a992ca2 | 2011-01-19 16:00:07 +0100 | [diff] [blame] | 46 | #include <net/netfilter/nf_conntrack_timestamp.h> |
Florian Westphal | c539f01 | 2013-01-11 06:30:44 +0000 | [diff] [blame] | 47 | #include <net/netfilter/nf_conntrack_labels.h> |
Eric Leblond | b89bd0c | 2017-05-11 18:56:38 +0200 | [diff] [blame] | 48 | #include <net/netfilter/nf_conntrack_seqadj.h> |
| 49 | #include <net/netfilter/nf_conntrack_synproxy.h> |
Jozsef Kadlecsik | 5b1158e | 2006-12-02 22:07:13 -0800 | [diff] [blame] | 50 | #ifdef CONFIG_NF_NAT_NEEDED |
| 51 | #include <net/netfilter/nf_nat_core.h> |
Patrick McHardy | c7232c9 | 2012-08-26 19:14:06 +0200 | [diff] [blame] | 52 | #include <net/netfilter/nf_nat_l4proto.h> |
Pablo Neira Ayuso | 8c88f87 | 2012-06-07 13:31:25 +0200 | [diff] [blame] | 53 | #include <net/netfilter/nf_nat_helper.h> |
Jozsef Kadlecsik | 5b1158e | 2006-12-02 22:07:13 -0800 | [diff] [blame] | 54 | #endif |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 55 | |
| 56 | #include <linux/netfilter/nfnetlink.h> |
| 57 | #include <linux/netfilter/nfnetlink_conntrack.h> |
| 58 | |
| 59 | MODULE_LICENSE("GPL"); |
| 60 | |
Harald Welte | dc808fe | 2006-03-20 17:56:32 -0800 | [diff] [blame] | 61 | static char __initdata version[] = "0.93"; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 62 | |
Pablo Neira Ayuso | 4054ff4 | 2016-04-12 23:32:34 +0200 | [diff] [blame] | 63 | static int ctnetlink_dump_tuples_proto(struct sk_buff *skb, |
| 64 | const struct nf_conntrack_tuple *tuple, |
| 65 | struct nf_conntrack_l4proto *l4proto) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 66 | { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 67 | int ret = 0; |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 68 | struct nlattr *nest_parms; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 69 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 70 | nest_parms = nla_nest_start(skb, CTA_TUPLE_PROTO | NLA_F_NESTED); |
| 71 | if (!nest_parms) |
| 72 | goto nla_put_failure; |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 73 | if (nla_put_u8(skb, CTA_PROTO_NUM, tuple->dst.protonum)) |
| 74 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 75 | |
Patrick McHardy | fdf7083 | 2007-09-28 14:37:41 -0700 | [diff] [blame] | 76 | if (likely(l4proto->tuple_to_nlattr)) |
| 77 | ret = l4proto->tuple_to_nlattr(skb, tuple); |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 78 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 79 | nla_nest_end(skb, nest_parms); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 80 | |
| 81 | return ret; |
| 82 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 83 | nla_put_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 84 | return -1; |
| 85 | } |
| 86 | |
Pablo Neira Ayuso | 4054ff4 | 2016-04-12 23:32:34 +0200 | [diff] [blame] | 87 | static int ctnetlink_dump_tuples_ip(struct sk_buff *skb, |
| 88 | const struct nf_conntrack_tuple *tuple, |
| 89 | struct nf_conntrack_l3proto *l3proto) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 90 | { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 91 | int ret = 0; |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 92 | struct nlattr *nest_parms; |
| 93 | |
| 94 | nest_parms = nla_nest_start(skb, CTA_TUPLE_IP | NLA_F_NESTED); |
| 95 | if (!nest_parms) |
| 96 | goto nla_put_failure; |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 97 | |
Patrick McHardy | fdf7083 | 2007-09-28 14:37:41 -0700 | [diff] [blame] | 98 | if (likely(l3proto->tuple_to_nlattr)) |
| 99 | ret = l3proto->tuple_to_nlattr(skb, tuple); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 100 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 101 | nla_nest_end(skb, nest_parms); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 102 | |
| 103 | return ret; |
| 104 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 105 | nla_put_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 106 | return -1; |
| 107 | } |
| 108 | |
Pablo Neira Ayuso | 4054ff4 | 2016-04-12 23:32:34 +0200 | [diff] [blame] | 109 | static int ctnetlink_dump_tuples(struct sk_buff *skb, |
| 110 | const struct nf_conntrack_tuple *tuple) |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 111 | { |
| 112 | int ret; |
| 113 | struct nf_conntrack_l3proto *l3proto; |
Martin Josefsson | 605dcad | 2006-11-29 02:35:06 +0100 | [diff] [blame] | 114 | struct nf_conntrack_l4proto *l4proto; |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 115 | |
Hans Schillstrom | 3b988ec | 2012-03-05 02:24:29 +0000 | [diff] [blame] | 116 | rcu_read_lock(); |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 117 | l3proto = __nf_ct_l3proto_find(tuple->src.l3num); |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 118 | ret = ctnetlink_dump_tuples_ip(skb, tuple, l3proto); |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 119 | |
Hans Schillstrom | 3b988ec | 2012-03-05 02:24:29 +0000 | [diff] [blame] | 120 | if (ret >= 0) { |
| 121 | l4proto = __nf_ct_l4proto_find(tuple->src.l3num, |
| 122 | tuple->dst.protonum); |
| 123 | ret = ctnetlink_dump_tuples_proto(skb, tuple, l4proto); |
| 124 | } |
| 125 | rcu_read_unlock(); |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 126 | return ret; |
| 127 | } |
| 128 | |
Pablo Neira Ayuso | 4054ff4 | 2016-04-12 23:32:34 +0200 | [diff] [blame] | 129 | static int ctnetlink_dump_zone_id(struct sk_buff *skb, int attrtype, |
| 130 | const struct nf_conntrack_zone *zone, int dir) |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 131 | { |
| 132 | if (zone->id == NF_CT_DEFAULT_ZONE_ID || zone->dir != dir) |
| 133 | return 0; |
| 134 | if (nla_put_be16(skb, attrtype, htons(zone->id))) |
| 135 | goto nla_put_failure; |
| 136 | return 0; |
| 137 | |
| 138 | nla_put_failure: |
| 139 | return -1; |
| 140 | } |
| 141 | |
Pablo Neira Ayuso | 4054ff4 | 2016-04-12 23:32:34 +0200 | [diff] [blame] | 142 | static int ctnetlink_dump_status(struct sk_buff *skb, const struct nf_conn *ct) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 143 | { |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 144 | if (nla_put_be32(skb, CTA_STATUS, htonl(ct->status))) |
| 145 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 146 | return 0; |
| 147 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 148 | nla_put_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 149 | return -1; |
| 150 | } |
| 151 | |
Pablo Neira Ayuso | 4054ff4 | 2016-04-12 23:32:34 +0200 | [diff] [blame] | 152 | static int ctnetlink_dump_timeout(struct sk_buff *skb, const struct nf_conn *ct) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 153 | { |
Florian Westphal | d0b35b9 | 2016-08-03 02:45:07 +0200 | [diff] [blame] | 154 | long timeout = nf_ct_expires(ct) / HZ; |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 155 | |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 156 | if (nla_put_be32(skb, CTA_TIMEOUT, htonl(timeout))) |
| 157 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 158 | return 0; |
| 159 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 160 | nla_put_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 161 | return -1; |
| 162 | } |
| 163 | |
Pablo Neira Ayuso | 4054ff4 | 2016-04-12 23:32:34 +0200 | [diff] [blame] | 164 | static int ctnetlink_dump_protoinfo(struct sk_buff *skb, struct nf_conn *ct) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 165 | { |
Patrick McHardy | 5e8fbe2 | 2008-04-14 11:15:52 +0200 | [diff] [blame] | 166 | struct nf_conntrack_l4proto *l4proto; |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 167 | struct nlattr *nest_proto; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 168 | int ret; |
| 169 | |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 170 | l4proto = __nf_ct_l4proto_find(nf_ct_l3num(ct), nf_ct_protonum(ct)); |
| 171 | if (!l4proto->to_nlattr) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 172 | return 0; |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 173 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 174 | nest_proto = nla_nest_start(skb, CTA_PROTOINFO | NLA_F_NESTED); |
| 175 | if (!nest_proto) |
| 176 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 177 | |
Patrick McHardy | fdf7083 | 2007-09-28 14:37:41 -0700 | [diff] [blame] | 178 | ret = l4proto->to_nlattr(skb, nest_proto, ct); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 179 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 180 | nla_nest_end(skb, nest_proto); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 181 | |
| 182 | return ret; |
| 183 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 184 | nla_put_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 185 | return -1; |
| 186 | } |
| 187 | |
Pablo Neira Ayuso | 4054ff4 | 2016-04-12 23:32:34 +0200 | [diff] [blame] | 188 | static int ctnetlink_dump_helpinfo(struct sk_buff *skb, |
| 189 | const struct nf_conn *ct) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 190 | { |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 191 | struct nlattr *nest_helper; |
Harald Welte | dc808fe | 2006-03-20 17:56:32 -0800 | [diff] [blame] | 192 | const struct nf_conn_help *help = nfct_help(ct); |
Patrick McHarrdy | 3c158f7 | 2007-06-05 12:55:27 -0700 | [diff] [blame] | 193 | struct nf_conntrack_helper *helper; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 194 | |
Patrick McHarrdy | 3c158f7 | 2007-06-05 12:55:27 -0700 | [diff] [blame] | 195 | if (!help) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 196 | return 0; |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 197 | |
Patrick McHarrdy | 3c158f7 | 2007-06-05 12:55:27 -0700 | [diff] [blame] | 198 | helper = rcu_dereference(help->helper); |
| 199 | if (!helper) |
| 200 | goto out; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 201 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 202 | nest_helper = nla_nest_start(skb, CTA_HELP | NLA_F_NESTED); |
| 203 | if (!nest_helper) |
| 204 | goto nla_put_failure; |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 205 | if (nla_put_string(skb, CTA_HELP_NAME, helper->name)) |
| 206 | goto nla_put_failure; |
Patrick McHarrdy | 3c158f7 | 2007-06-05 12:55:27 -0700 | [diff] [blame] | 207 | |
Patrick McHardy | fdf7083 | 2007-09-28 14:37:41 -0700 | [diff] [blame] | 208 | if (helper->to_nlattr) |
| 209 | helper->to_nlattr(skb, ct); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 210 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 211 | nla_nest_end(skb, nest_helper); |
Patrick McHarrdy | 3c158f7 | 2007-06-05 12:55:27 -0700 | [diff] [blame] | 212 | out: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 213 | return 0; |
| 214 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 215 | nla_put_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 216 | return -1; |
| 217 | } |
| 218 | |
Ilpo Järvinen | bb5cf80 | 2008-01-05 23:11:31 -0800 | [diff] [blame] | 219 | static int |
Holger Eitzenberger | 4542fa4 | 2013-09-26 17:31:52 +0200 | [diff] [blame] | 220 | dump_counters(struct sk_buff *skb, struct nf_conn_acct *acct, |
| 221 | enum ip_conntrack_dir dir, int type) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 222 | { |
Holger Eitzenberger | 4542fa4 | 2013-09-26 17:31:52 +0200 | [diff] [blame] | 223 | enum ctattr_type attr = dir ? CTA_COUNTERS_REPLY: CTA_COUNTERS_ORIG; |
| 224 | struct nf_conn_counter *counter = acct->counter; |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 225 | struct nlattr *nest_count; |
Holger Eitzenberger | 4542fa4 | 2013-09-26 17:31:52 +0200 | [diff] [blame] | 226 | u64 pkts, bytes; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 227 | |
Holger Eitzenberger | 4542fa4 | 2013-09-26 17:31:52 +0200 | [diff] [blame] | 228 | if (type == IPCTNL_MSG_CT_GET_CTRZERO) { |
| 229 | pkts = atomic64_xchg(&counter[dir].packets, 0); |
| 230 | bytes = atomic64_xchg(&counter[dir].bytes, 0); |
| 231 | } else { |
| 232 | pkts = atomic64_read(&counter[dir].packets); |
| 233 | bytes = atomic64_read(&counter[dir].bytes); |
| 234 | } |
| 235 | |
| 236 | nest_count = nla_nest_start(skb, attr | NLA_F_NESTED); |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 237 | if (!nest_count) |
| 238 | goto nla_put_failure; |
| 239 | |
Nicolas Dichtel | b46f6de | 2016-04-22 17:31:18 +0200 | [diff] [blame] | 240 | if (nla_put_be64(skb, CTA_COUNTERS_PACKETS, cpu_to_be64(pkts), |
| 241 | CTA_COUNTERS_PAD) || |
| 242 | nla_put_be64(skb, CTA_COUNTERS_BYTES, cpu_to_be64(bytes), |
| 243 | CTA_COUNTERS_PAD)) |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 244 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 245 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 246 | nla_nest_end(skb, nest_count); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 247 | |
| 248 | return 0; |
| 249 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 250 | nla_put_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 251 | return -1; |
| 252 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 253 | |
Pablo Neira Ayuso | a992ca2 | 2011-01-19 16:00:07 +0100 | [diff] [blame] | 254 | static int |
Holger Eitzenberger | 4542fa4 | 2013-09-26 17:31:52 +0200 | [diff] [blame] | 255 | ctnetlink_dump_acct(struct sk_buff *skb, const struct nf_conn *ct, int type) |
Pablo Neira Ayuso | 80e60e6 | 2011-12-24 14:11:39 +0100 | [diff] [blame] | 256 | { |
Holger Eitzenberger | 4542fa4 | 2013-09-26 17:31:52 +0200 | [diff] [blame] | 257 | struct nf_conn_acct *acct = nf_conn_acct_find(ct); |
Pablo Neira Ayuso | 80e60e6 | 2011-12-24 14:11:39 +0100 | [diff] [blame] | 258 | |
Pablo Neira Ayuso | 80e60e6 | 2011-12-24 14:11:39 +0100 | [diff] [blame] | 259 | if (!acct) |
| 260 | return 0; |
| 261 | |
Holger Eitzenberger | 4542fa4 | 2013-09-26 17:31:52 +0200 | [diff] [blame] | 262 | if (dump_counters(skb, acct, IP_CT_DIR_ORIGINAL, type) < 0) |
| 263 | return -1; |
| 264 | if (dump_counters(skb, acct, IP_CT_DIR_REPLY, type) < 0) |
| 265 | return -1; |
| 266 | |
| 267 | return 0; |
Pablo Neira Ayuso | 80e60e6 | 2011-12-24 14:11:39 +0100 | [diff] [blame] | 268 | } |
| 269 | |
| 270 | static int |
Pablo Neira Ayuso | a992ca2 | 2011-01-19 16:00:07 +0100 | [diff] [blame] | 271 | ctnetlink_dump_timestamp(struct sk_buff *skb, const struct nf_conn *ct) |
| 272 | { |
| 273 | struct nlattr *nest_count; |
| 274 | const struct nf_conn_tstamp *tstamp; |
| 275 | |
| 276 | tstamp = nf_conn_tstamp_find(ct); |
| 277 | if (!tstamp) |
| 278 | return 0; |
| 279 | |
| 280 | nest_count = nla_nest_start(skb, CTA_TIMESTAMP | NLA_F_NESTED); |
| 281 | if (!nest_count) |
| 282 | goto nla_put_failure; |
| 283 | |
Nicolas Dichtel | b46f6de | 2016-04-22 17:31:18 +0200 | [diff] [blame] | 284 | if (nla_put_be64(skb, CTA_TIMESTAMP_START, cpu_to_be64(tstamp->start), |
| 285 | CTA_TIMESTAMP_PAD) || |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 286 | (tstamp->stop != 0 && nla_put_be64(skb, CTA_TIMESTAMP_STOP, |
Nicolas Dichtel | b46f6de | 2016-04-22 17:31:18 +0200 | [diff] [blame] | 287 | cpu_to_be64(tstamp->stop), |
| 288 | CTA_TIMESTAMP_PAD))) |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 289 | goto nla_put_failure; |
Pablo Neira Ayuso | a992ca2 | 2011-01-19 16:00:07 +0100 | [diff] [blame] | 290 | nla_nest_end(skb, nest_count); |
| 291 | |
| 292 | return 0; |
| 293 | |
| 294 | nla_put_failure: |
| 295 | return -1; |
| 296 | } |
| 297 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 298 | #ifdef CONFIG_NF_CONNTRACK_MARK |
Pablo Neira Ayuso | 4054ff4 | 2016-04-12 23:32:34 +0200 | [diff] [blame] | 299 | static int ctnetlink_dump_mark(struct sk_buff *skb, const struct nf_conn *ct) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 300 | { |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 301 | if (nla_put_be32(skb, CTA_MARK, htonl(ct->mark))) |
| 302 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 303 | return 0; |
| 304 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 305 | nla_put_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 306 | return -1; |
| 307 | } |
| 308 | #else |
| 309 | #define ctnetlink_dump_mark(a, b) (0) |
| 310 | #endif |
| 311 | |
Pablo Neira Ayuso | 37fccd8 | 2007-12-17 22:28:41 -0800 | [diff] [blame] | 312 | #ifdef CONFIG_NF_CONNTRACK_SECMARK |
Pablo Neira Ayuso | 4054ff4 | 2016-04-12 23:32:34 +0200 | [diff] [blame] | 313 | static int ctnetlink_dump_secctx(struct sk_buff *skb, const struct nf_conn *ct) |
Pablo Neira Ayuso | 37fccd8 | 2007-12-17 22:28:41 -0800 | [diff] [blame] | 314 | { |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 315 | struct nlattr *nest_secctx; |
| 316 | int len, ret; |
| 317 | char *secctx; |
Pablo Neira Ayuso | 37fccd8 | 2007-12-17 22:28:41 -0800 | [diff] [blame] | 318 | |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 319 | ret = security_secid_to_secctx(ct->secmark, &secctx, &len); |
| 320 | if (ret) |
Pablo Neira Ayuso | cba85b5 | 2011-01-06 11:25:00 -0800 | [diff] [blame] | 321 | return 0; |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 322 | |
| 323 | ret = -1; |
| 324 | nest_secctx = nla_nest_start(skb, CTA_SECCTX | NLA_F_NESTED); |
| 325 | if (!nest_secctx) |
| 326 | goto nla_put_failure; |
| 327 | |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 328 | if (nla_put_string(skb, CTA_SECCTX_NAME, secctx)) |
| 329 | goto nla_put_failure; |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 330 | nla_nest_end(skb, nest_secctx); |
| 331 | |
| 332 | ret = 0; |
Pablo Neira Ayuso | 37fccd8 | 2007-12-17 22:28:41 -0800 | [diff] [blame] | 333 | nla_put_failure: |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 334 | security_release_secctx(secctx, len); |
| 335 | return ret; |
Pablo Neira Ayuso | 37fccd8 | 2007-12-17 22:28:41 -0800 | [diff] [blame] | 336 | } |
| 337 | #else |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 338 | #define ctnetlink_dump_secctx(a, b) (0) |
Pablo Neira Ayuso | 37fccd8 | 2007-12-17 22:28:41 -0800 | [diff] [blame] | 339 | #endif |
| 340 | |
Florian Westphal | 0ceabd8 | 2013-01-11 06:30:45 +0000 | [diff] [blame] | 341 | #ifdef CONFIG_NF_CONNTRACK_LABELS |
Pablo Neira Ayuso | 4a96300 | 2016-04-15 12:24:57 +0200 | [diff] [blame] | 342 | static inline int ctnetlink_label_size(const struct nf_conn *ct) |
Florian Westphal | 0ceabd8 | 2013-01-11 06:30:45 +0000 | [diff] [blame] | 343 | { |
| 344 | struct nf_conn_labels *labels = nf_ct_labels_find(ct); |
| 345 | |
| 346 | if (!labels) |
| 347 | return 0; |
Florian Westphal | 2301401 | 2016-07-21 12:51:16 +0200 | [diff] [blame] | 348 | return nla_total_size(sizeof(labels->bits)); |
Florian Westphal | 0ceabd8 | 2013-01-11 06:30:45 +0000 | [diff] [blame] | 349 | } |
| 350 | |
| 351 | static int |
| 352 | ctnetlink_dump_labels(struct sk_buff *skb, const struct nf_conn *ct) |
| 353 | { |
| 354 | struct nf_conn_labels *labels = nf_ct_labels_find(ct); |
Florian Westphal | 2301401 | 2016-07-21 12:51:16 +0200 | [diff] [blame] | 355 | unsigned int i; |
Florian Westphal | 0ceabd8 | 2013-01-11 06:30:45 +0000 | [diff] [blame] | 356 | |
| 357 | if (!labels) |
| 358 | return 0; |
| 359 | |
Florian Westphal | 0ceabd8 | 2013-01-11 06:30:45 +0000 | [diff] [blame] | 360 | i = 0; |
| 361 | do { |
| 362 | if (labels->bits[i] != 0) |
Florian Westphal | 2301401 | 2016-07-21 12:51:16 +0200 | [diff] [blame] | 363 | return nla_put(skb, CTA_LABELS, sizeof(labels->bits), |
| 364 | labels->bits); |
Florian Westphal | 0ceabd8 | 2013-01-11 06:30:45 +0000 | [diff] [blame] | 365 | i++; |
Florian Westphal | 2301401 | 2016-07-21 12:51:16 +0200 | [diff] [blame] | 366 | } while (i < ARRAY_SIZE(labels->bits)); |
Florian Westphal | 0ceabd8 | 2013-01-11 06:30:45 +0000 | [diff] [blame] | 367 | |
| 368 | return 0; |
| 369 | } |
| 370 | #else |
| 371 | #define ctnetlink_dump_labels(a, b) (0) |
| 372 | #define ctnetlink_label_size(a) (0) |
| 373 | #endif |
| 374 | |
Pablo Neira Ayuso | 0f417ce | 2007-12-17 22:28:19 -0800 | [diff] [blame] | 375 | #define master_tuple(ct) &(ct->master->tuplehash[IP_CT_DIR_ORIGINAL].tuple) |
| 376 | |
Pablo Neira Ayuso | 4054ff4 | 2016-04-12 23:32:34 +0200 | [diff] [blame] | 377 | static int ctnetlink_dump_master(struct sk_buff *skb, const struct nf_conn *ct) |
Pablo Neira Ayuso | 0f417ce | 2007-12-17 22:28:19 -0800 | [diff] [blame] | 378 | { |
| 379 | struct nlattr *nest_parms; |
| 380 | |
| 381 | if (!(ct->status & IPS_EXPECTED)) |
| 382 | return 0; |
| 383 | |
| 384 | nest_parms = nla_nest_start(skb, CTA_TUPLE_MASTER | NLA_F_NESTED); |
| 385 | if (!nest_parms) |
| 386 | goto nla_put_failure; |
| 387 | if (ctnetlink_dump_tuples(skb, master_tuple(ct)) < 0) |
| 388 | goto nla_put_failure; |
| 389 | nla_nest_end(skb, nest_parms); |
| 390 | |
| 391 | return 0; |
| 392 | |
| 393 | nla_put_failure: |
| 394 | return -1; |
| 395 | } |
| 396 | |
Ilpo Järvinen | bb5cf80 | 2008-01-05 23:11:31 -0800 | [diff] [blame] | 397 | static int |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 398 | dump_ct_seq_adj(struct sk_buff *skb, const struct nf_ct_seqadj *seq, int type) |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 399 | { |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 400 | struct nlattr *nest_parms; |
| 401 | |
| 402 | nest_parms = nla_nest_start(skb, type | NLA_F_NESTED); |
| 403 | if (!nest_parms) |
| 404 | goto nla_put_failure; |
| 405 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 406 | if (nla_put_be32(skb, CTA_SEQADJ_CORRECTION_POS, |
| 407 | htonl(seq->correction_pos)) || |
| 408 | nla_put_be32(skb, CTA_SEQADJ_OFFSET_BEFORE, |
| 409 | htonl(seq->offset_before)) || |
| 410 | nla_put_be32(skb, CTA_SEQADJ_OFFSET_AFTER, |
| 411 | htonl(seq->offset_after))) |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 412 | goto nla_put_failure; |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 413 | |
| 414 | nla_nest_end(skb, nest_parms); |
| 415 | |
| 416 | return 0; |
| 417 | |
| 418 | nla_put_failure: |
| 419 | return -1; |
| 420 | } |
| 421 | |
Pablo Neira Ayuso | 4054ff4 | 2016-04-12 23:32:34 +0200 | [diff] [blame] | 422 | static int ctnetlink_dump_ct_seq_adj(struct sk_buff *skb, |
| 423 | const struct nf_conn *ct) |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 424 | { |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 425 | struct nf_conn_seqadj *seqadj = nfct_seqadj(ct); |
| 426 | struct nf_ct_seqadj *seq; |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 427 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 428 | if (!(ct->status & IPS_SEQ_ADJUST) || !seqadj) |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 429 | return 0; |
| 430 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 431 | seq = &seqadj->seq[IP_CT_DIR_ORIGINAL]; |
| 432 | if (dump_ct_seq_adj(skb, seq, CTA_SEQ_ADJ_ORIG) == -1) |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 433 | return -1; |
| 434 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 435 | seq = &seqadj->seq[IP_CT_DIR_REPLY]; |
| 436 | if (dump_ct_seq_adj(skb, seq, CTA_SEQ_ADJ_REPLY) == -1) |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 437 | return -1; |
| 438 | |
| 439 | return 0; |
| 440 | } |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 441 | |
Pablo Neira Ayuso | 4054ff4 | 2016-04-12 23:32:34 +0200 | [diff] [blame] | 442 | static int ctnetlink_dump_id(struct sk_buff *skb, const struct nf_conn *ct) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 443 | { |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 444 | if (nla_put_be32(skb, CTA_ID, htonl((unsigned long)ct))) |
| 445 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 446 | return 0; |
| 447 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 448 | nla_put_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 449 | return -1; |
| 450 | } |
| 451 | |
Pablo Neira Ayuso | 4054ff4 | 2016-04-12 23:32:34 +0200 | [diff] [blame] | 452 | static int ctnetlink_dump_use(struct sk_buff *skb, const struct nf_conn *ct) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 453 | { |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 454 | if (nla_put_be32(skb, CTA_USE, htonl(atomic_read(&ct->ct_general.use)))) |
| 455 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 456 | return 0; |
| 457 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 458 | nla_put_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 459 | return -1; |
| 460 | } |
| 461 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 462 | static int |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 463 | ctnetlink_fill_info(struct sk_buff *skb, u32 portid, u32 seq, u32 type, |
Pablo Neira Ayuso | 80e60e6 | 2011-12-24 14:11:39 +0100 | [diff] [blame] | 464 | struct nf_conn *ct) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 465 | { |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 466 | const struct nf_conntrack_zone *zone; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 467 | struct nlmsghdr *nlh; |
| 468 | struct nfgenmsg *nfmsg; |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 469 | struct nlattr *nest_parms; |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 470 | unsigned int flags = portid ? NLM_F_MULTI : 0, event; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 471 | |
Pablo Neira Ayuso | 80e60e6 | 2011-12-24 14:11:39 +0100 | [diff] [blame] | 472 | event = (NFNL_SUBSYS_CTNETLINK << 8 | IPCTNL_MSG_CT_NEW); |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 473 | nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags); |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 474 | if (nlh == NULL) |
| 475 | goto nlmsg_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 476 | |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 477 | nfmsg = nlmsg_data(nlh); |
Patrick McHardy | 5e8fbe2 | 2008-04-14 11:15:52 +0200 | [diff] [blame] | 478 | nfmsg->nfgen_family = nf_ct_l3num(ct); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 479 | nfmsg->version = NFNETLINK_V0; |
| 480 | nfmsg->res_id = 0; |
| 481 | |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 482 | zone = nf_ct_zone(ct); |
| 483 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 484 | nest_parms = nla_nest_start(skb, CTA_TUPLE_ORIG | NLA_F_NESTED); |
| 485 | if (!nest_parms) |
| 486 | goto nla_put_failure; |
Pablo Neira Ayuso | f2f3e38 | 2009-06-02 20:03:35 +0200 | [diff] [blame] | 487 | if (ctnetlink_dump_tuples(skb, nf_ct_tuple(ct, IP_CT_DIR_ORIGINAL)) < 0) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 488 | goto nla_put_failure; |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 489 | if (ctnetlink_dump_zone_id(skb, CTA_TUPLE_ZONE, zone, |
| 490 | NF_CT_ZONE_DIR_ORIG) < 0) |
| 491 | goto nla_put_failure; |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 492 | nla_nest_end(skb, nest_parms); |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 493 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 494 | nest_parms = nla_nest_start(skb, CTA_TUPLE_REPLY | NLA_F_NESTED); |
| 495 | if (!nest_parms) |
| 496 | goto nla_put_failure; |
Pablo Neira Ayuso | f2f3e38 | 2009-06-02 20:03:35 +0200 | [diff] [blame] | 497 | if (ctnetlink_dump_tuples(skb, nf_ct_tuple(ct, IP_CT_DIR_REPLY)) < 0) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 498 | goto nla_put_failure; |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 499 | if (ctnetlink_dump_zone_id(skb, CTA_TUPLE_ZONE, zone, |
| 500 | NF_CT_ZONE_DIR_REPL) < 0) |
| 501 | goto nla_put_failure; |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 502 | nla_nest_end(skb, nest_parms); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 503 | |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 504 | if (ctnetlink_dump_zone_id(skb, CTA_ZONE, zone, |
| 505 | NF_CT_DEFAULT_ZONE_DIR) < 0) |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 506 | goto nla_put_failure; |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 507 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 508 | if (ctnetlink_dump_status(skb, ct) < 0 || |
| 509 | ctnetlink_dump_timeout(skb, ct) < 0 || |
Holger Eitzenberger | 4542fa4 | 2013-09-26 17:31:52 +0200 | [diff] [blame] | 510 | ctnetlink_dump_acct(skb, ct, type) < 0 || |
Pablo Neira Ayuso | a992ca2 | 2011-01-19 16:00:07 +0100 | [diff] [blame] | 511 | ctnetlink_dump_timestamp(skb, ct) < 0 || |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 512 | ctnetlink_dump_protoinfo(skb, ct) < 0 || |
| 513 | ctnetlink_dump_helpinfo(skb, ct) < 0 || |
| 514 | ctnetlink_dump_mark(skb, ct) < 0 || |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 515 | ctnetlink_dump_secctx(skb, ct) < 0 || |
Florian Westphal | 0ceabd8 | 2013-01-11 06:30:45 +0000 | [diff] [blame] | 516 | ctnetlink_dump_labels(skb, ct) < 0 || |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 517 | ctnetlink_dump_id(skb, ct) < 0 || |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 518 | ctnetlink_dump_use(skb, ct) < 0 || |
Pablo Neira Ayuso | 0f417ce | 2007-12-17 22:28:19 -0800 | [diff] [blame] | 519 | ctnetlink_dump_master(skb, ct) < 0 || |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 520 | ctnetlink_dump_ct_seq_adj(skb, ct) < 0) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 521 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 522 | |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 523 | nlmsg_end(skb, nlh); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 524 | return skb->len; |
| 525 | |
| 526 | nlmsg_failure: |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 527 | nla_put_failure: |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 528 | nlmsg_cancel(skb, nlh); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 529 | return -1; |
| 530 | } |
| 531 | |
Pablo Neira Ayuso | 4a96300 | 2016-04-15 12:24:57 +0200 | [diff] [blame] | 532 | static inline size_t ctnetlink_proto_size(const struct nf_conn *ct) |
Holger Eitzenberger | 2732c4e | 2009-03-25 21:50:59 +0100 | [diff] [blame] | 533 | { |
| 534 | struct nf_conntrack_l3proto *l3proto; |
| 535 | struct nf_conntrack_l4proto *l4proto; |
Pablo Neira Ayuso | 03b64f5 | 2009-06-02 20:08:27 +0200 | [diff] [blame] | 536 | size_t len = 0; |
Holger Eitzenberger | 2732c4e | 2009-03-25 21:50:59 +0100 | [diff] [blame] | 537 | |
| 538 | rcu_read_lock(); |
Pablo Neira Ayuso | 03b64f5 | 2009-06-02 20:08:27 +0200 | [diff] [blame] | 539 | l3proto = __nf_ct_l3proto_find(nf_ct_l3num(ct)); |
Holger Eitzenberger | 2732c4e | 2009-03-25 21:50:59 +0100 | [diff] [blame] | 540 | len += l3proto->nla_size; |
| 541 | |
Pablo Neira Ayuso | 03b64f5 | 2009-06-02 20:08:27 +0200 | [diff] [blame] | 542 | l4proto = __nf_ct_l4proto_find(nf_ct_l3num(ct), nf_ct_protonum(ct)); |
Holger Eitzenberger | 2732c4e | 2009-03-25 21:50:59 +0100 | [diff] [blame] | 543 | len += l4proto->nla_size; |
| 544 | rcu_read_unlock(); |
| 545 | |
Pablo Neira Ayuso | 03b64f5 | 2009-06-02 20:08:27 +0200 | [diff] [blame] | 546 | return len; |
| 547 | } |
| 548 | |
Pablo Neira Ayuso | 4a96300 | 2016-04-15 12:24:57 +0200 | [diff] [blame] | 549 | static inline size_t ctnetlink_acct_size(const struct nf_conn *ct) |
Jiri Pirko | d26e6a0 | 2010-04-01 12:39:19 +0200 | [diff] [blame] | 550 | { |
| 551 | if (!nf_ct_ext_exist(ct, NF_CT_EXT_ACCT)) |
| 552 | return 0; |
| 553 | return 2 * nla_total_size(0) /* CTA_COUNTERS_ORIG|REPL */ |
Nicolas Dichtel | b46f6de | 2016-04-22 17:31:18 +0200 | [diff] [blame] | 554 | + 2 * nla_total_size_64bit(sizeof(uint64_t)) /* CTA_COUNTERS_PACKETS */ |
| 555 | + 2 * nla_total_size_64bit(sizeof(uint64_t)) /* CTA_COUNTERS_BYTES */ |
Jiri Pirko | d26e6a0 | 2010-04-01 12:39:19 +0200 | [diff] [blame] | 556 | ; |
| 557 | } |
| 558 | |
Pablo Neira Ayuso | 4a96300 | 2016-04-15 12:24:57 +0200 | [diff] [blame] | 559 | static inline int ctnetlink_secctx_size(const struct nf_conn *ct) |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 560 | { |
Pablo Neira Ayuso | cba85b5 | 2011-01-06 11:25:00 -0800 | [diff] [blame] | 561 | #ifdef CONFIG_NF_CONNTRACK_SECMARK |
| 562 | int len, ret; |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 563 | |
Pablo Neira Ayuso | cba85b5 | 2011-01-06 11:25:00 -0800 | [diff] [blame] | 564 | ret = security_secid_to_secctx(ct->secmark, NULL, &len); |
| 565 | if (ret) |
| 566 | return 0; |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 567 | |
Pablo Neira Ayuso | cba85b5 | 2011-01-06 11:25:00 -0800 | [diff] [blame] | 568 | return nla_total_size(0) /* CTA_SECCTX */ |
| 569 | + nla_total_size(sizeof(char) * len); /* CTA_SECCTX_NAME */ |
| 570 | #else |
| 571 | return 0; |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 572 | #endif |
Pablo Neira Ayuso | cba85b5 | 2011-01-06 11:25:00 -0800 | [diff] [blame] | 573 | } |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 574 | |
Pablo Neira Ayuso | 4a96300 | 2016-04-15 12:24:57 +0200 | [diff] [blame] | 575 | static inline size_t ctnetlink_timestamp_size(const struct nf_conn *ct) |
Pablo Neira Ayuso | a992ca2 | 2011-01-19 16:00:07 +0100 | [diff] [blame] | 576 | { |
| 577 | #ifdef CONFIG_NF_CONNTRACK_TIMESTAMP |
| 578 | if (!nf_ct_ext_exist(ct, NF_CT_EXT_TSTAMP)) |
| 579 | return 0; |
Nicolas Dichtel | b46f6de | 2016-04-22 17:31:18 +0200 | [diff] [blame] | 580 | return nla_total_size(0) + 2 * nla_total_size_64bit(sizeof(uint64_t)); |
Pablo Neira Ayuso | a992ca2 | 2011-01-19 16:00:07 +0100 | [diff] [blame] | 581 | #else |
| 582 | return 0; |
| 583 | #endif |
| 584 | } |
| 585 | |
Pablo Neira Ayuso | 4054ff4 | 2016-04-12 23:32:34 +0200 | [diff] [blame] | 586 | #ifdef CONFIG_NF_CONNTRACK_EVENTS |
| 587 | static size_t ctnetlink_nlmsg_size(const struct nf_conn *ct) |
Pablo Neira Ayuso | 03b64f5 | 2009-06-02 20:08:27 +0200 | [diff] [blame] | 588 | { |
| 589 | return NLMSG_ALIGN(sizeof(struct nfgenmsg)) |
| 590 | + 3 * nla_total_size(0) /* CTA_TUPLE_ORIG|REPL|MASTER */ |
| 591 | + 3 * nla_total_size(0) /* CTA_TUPLE_IP */ |
| 592 | + 3 * nla_total_size(0) /* CTA_TUPLE_PROTO */ |
| 593 | + 3 * nla_total_size(sizeof(u_int8_t)) /* CTA_PROTO_NUM */ |
| 594 | + nla_total_size(sizeof(u_int32_t)) /* CTA_ID */ |
| 595 | + nla_total_size(sizeof(u_int32_t)) /* CTA_STATUS */ |
Holger Eitzenberger | f7b13e4 | 2013-09-26 17:31:51 +0200 | [diff] [blame] | 596 | + ctnetlink_acct_size(ct) |
Pablo Neira Ayuso | a992ca2 | 2011-01-19 16:00:07 +0100 | [diff] [blame] | 597 | + ctnetlink_timestamp_size(ct) |
Pablo Neira Ayuso | 03b64f5 | 2009-06-02 20:08:27 +0200 | [diff] [blame] | 598 | + nla_total_size(sizeof(u_int32_t)) /* CTA_TIMEOUT */ |
| 599 | + nla_total_size(0) /* CTA_PROTOINFO */ |
| 600 | + nla_total_size(0) /* CTA_HELP */ |
| 601 | + nla_total_size(NF_CT_HELPER_NAME_LEN) /* CTA_HELP_NAME */ |
Pablo Neira Ayuso | cba85b5 | 2011-01-06 11:25:00 -0800 | [diff] [blame] | 602 | + ctnetlink_secctx_size(ct) |
Pablo Neira Ayuso | 03b64f5 | 2009-06-02 20:08:27 +0200 | [diff] [blame] | 603 | #ifdef CONFIG_NF_NAT_NEEDED |
| 604 | + 2 * nla_total_size(0) /* CTA_NAT_SEQ_ADJ_ORIG|REPL */ |
| 605 | + 6 * nla_total_size(sizeof(u_int32_t)) /* CTA_NAT_SEQ_OFFSET */ |
| 606 | #endif |
| 607 | #ifdef CONFIG_NF_CONNTRACK_MARK |
| 608 | + nla_total_size(sizeof(u_int32_t)) /* CTA_MARK */ |
| 609 | #endif |
Ken-ichirou MATSUZAWA | 4a00106 | 2014-06-16 13:52:34 +0200 | [diff] [blame] | 610 | #ifdef CONFIG_NF_CONNTRACK_ZONES |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 611 | + nla_total_size(sizeof(u_int16_t)) /* CTA_ZONE|CTA_TUPLE_ZONE */ |
Ken-ichirou MATSUZAWA | 4a00106 | 2014-06-16 13:52:34 +0200 | [diff] [blame] | 612 | #endif |
Pablo Neira Ayuso | 03b64f5 | 2009-06-02 20:08:27 +0200 | [diff] [blame] | 613 | + ctnetlink_proto_size(ct) |
Florian Westphal | 0ceabd8 | 2013-01-11 06:30:45 +0000 | [diff] [blame] | 614 | + ctnetlink_label_size(ct) |
Pablo Neira Ayuso | 03b64f5 | 2009-06-02 20:08:27 +0200 | [diff] [blame] | 615 | ; |
Holger Eitzenberger | 2732c4e | 2009-03-25 21:50:59 +0100 | [diff] [blame] | 616 | } |
| 617 | |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 618 | static int |
| 619 | ctnetlink_conntrack_event(unsigned int events, struct nf_ct_event *item) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 620 | { |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 621 | const struct nf_conntrack_zone *zone; |
Alexey Dobriyan | 9592a5c | 2010-01-13 16:04:18 +0100 | [diff] [blame] | 622 | struct net *net; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 623 | struct nlmsghdr *nlh; |
| 624 | struct nfgenmsg *nfmsg; |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 625 | struct nlattr *nest_parms; |
Pablo Neira Ayuso | 19abb7b | 2008-11-18 11:56:20 +0100 | [diff] [blame] | 626 | struct nf_conn *ct = item->ct; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 627 | struct sk_buff *skb; |
| 628 | unsigned int type; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 629 | unsigned int flags = 0, group; |
Pablo Neira Ayuso | dd7669a | 2009-06-13 12:30:52 +0200 | [diff] [blame] | 630 | int err; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 631 | |
| 632 | /* ignore our fake conntrack entry */ |
Eric Dumazet | 5bfddbd | 2010-06-08 16:09:52 +0200 | [diff] [blame] | 633 | if (nf_ct_is_untracked(ct)) |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 634 | return 0; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 635 | |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 636 | if (events & (1 << IPCT_DESTROY)) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 637 | type = IPCTNL_MSG_CT_DELETE; |
| 638 | group = NFNLGRP_CONNTRACK_DESTROY; |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 639 | } else if (events & ((1 << IPCT_NEW) | (1 << IPCT_RELATED))) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 640 | type = IPCTNL_MSG_CT_NEW; |
| 641 | flags = NLM_F_CREATE|NLM_F_EXCL; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 642 | group = NFNLGRP_CONNTRACK_NEW; |
Pablo Neira Ayuso | 17e6e4e | 2009-06-02 20:08:46 +0200 | [diff] [blame] | 643 | } else if (events) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 644 | type = IPCTNL_MSG_CT_NEW; |
| 645 | group = NFNLGRP_CONNTRACK_UPDATE; |
| 646 | } else |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 647 | return 0; |
Patrick McHardy | a242769 | 2006-03-20 18:03:59 -0800 | [diff] [blame] | 648 | |
Alexey Dobriyan | 9592a5c | 2010-01-13 16:04:18 +0100 | [diff] [blame] | 649 | net = nf_ct_net(ct); |
| 650 | if (!item->report && !nfnetlink_has_listeners(net, group)) |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 651 | return 0; |
Patrick McHardy | a242769 | 2006-03-20 18:03:59 -0800 | [diff] [blame] | 652 | |
Pablo Neira Ayuso | 03b64f5 | 2009-06-02 20:08:27 +0200 | [diff] [blame] | 653 | skb = nlmsg_new(ctnetlink_nlmsg_size(ct), GFP_ATOMIC); |
| 654 | if (skb == NULL) |
Pablo Neira Ayuso | 150ace0 | 2009-04-17 17:47:31 +0200 | [diff] [blame] | 655 | goto errout; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 656 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 657 | type |= NFNL_SUBSYS_CTNETLINK << 8; |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 658 | nlh = nlmsg_put(skb, item->portid, 0, type, sizeof(*nfmsg), flags); |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 659 | if (nlh == NULL) |
| 660 | goto nlmsg_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 661 | |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 662 | nfmsg = nlmsg_data(nlh); |
Patrick McHardy | 5e8fbe2 | 2008-04-14 11:15:52 +0200 | [diff] [blame] | 663 | nfmsg->nfgen_family = nf_ct_l3num(ct); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 664 | nfmsg->version = NFNETLINK_V0; |
| 665 | nfmsg->res_id = 0; |
| 666 | |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 667 | rcu_read_lock(); |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 668 | zone = nf_ct_zone(ct); |
| 669 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 670 | nest_parms = nla_nest_start(skb, CTA_TUPLE_ORIG | NLA_F_NESTED); |
| 671 | if (!nest_parms) |
| 672 | goto nla_put_failure; |
Pablo Neira Ayuso | f2f3e38 | 2009-06-02 20:03:35 +0200 | [diff] [blame] | 673 | if (ctnetlink_dump_tuples(skb, nf_ct_tuple(ct, IP_CT_DIR_ORIGINAL)) < 0) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 674 | goto nla_put_failure; |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 675 | if (ctnetlink_dump_zone_id(skb, CTA_TUPLE_ZONE, zone, |
| 676 | NF_CT_ZONE_DIR_ORIG) < 0) |
| 677 | goto nla_put_failure; |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 678 | nla_nest_end(skb, nest_parms); |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 679 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 680 | nest_parms = nla_nest_start(skb, CTA_TUPLE_REPLY | NLA_F_NESTED); |
| 681 | if (!nest_parms) |
| 682 | goto nla_put_failure; |
Pablo Neira Ayuso | f2f3e38 | 2009-06-02 20:03:35 +0200 | [diff] [blame] | 683 | if (ctnetlink_dump_tuples(skb, nf_ct_tuple(ct, IP_CT_DIR_REPLY)) < 0) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 684 | goto nla_put_failure; |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 685 | if (ctnetlink_dump_zone_id(skb, CTA_TUPLE_ZONE, zone, |
| 686 | NF_CT_ZONE_DIR_REPL) < 0) |
| 687 | goto nla_put_failure; |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 688 | nla_nest_end(skb, nest_parms); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 689 | |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 690 | if (ctnetlink_dump_zone_id(skb, CTA_ZONE, zone, |
| 691 | NF_CT_DEFAULT_ZONE_DIR) < 0) |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 692 | goto nla_put_failure; |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 693 | |
Eric Leblond | 1eedf69 | 2008-05-13 23:27:11 -0700 | [diff] [blame] | 694 | if (ctnetlink_dump_id(skb, ct) < 0) |
| 695 | goto nla_put_failure; |
| 696 | |
Fabian Hugelshofer | e57dce6 | 2008-06-09 15:59:58 -0700 | [diff] [blame] | 697 | if (ctnetlink_dump_status(skb, ct) < 0) |
| 698 | goto nla_put_failure; |
| 699 | |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 700 | if (events & (1 << IPCT_DESTROY)) { |
Holger Eitzenberger | 4542fa4 | 2013-09-26 17:31:52 +0200 | [diff] [blame] | 701 | if (ctnetlink_dump_acct(skb, ct, type) < 0 || |
Pablo Neira Ayuso | a992ca2 | 2011-01-19 16:00:07 +0100 | [diff] [blame] | 702 | ctnetlink_dump_timestamp(skb, ct) < 0) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 703 | goto nla_put_failure; |
Pablo Neira Ayuso | 7b621c1 | 2006-11-29 02:35:32 +0100 | [diff] [blame] | 704 | } else { |
Pablo Neira Ayuso | 7b621c1 | 2006-11-29 02:35:32 +0100 | [diff] [blame] | 705 | if (ctnetlink_dump_timeout(skb, ct) < 0) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 706 | goto nla_put_failure; |
Pablo Neira Ayuso | 7b621c1 | 2006-11-29 02:35:32 +0100 | [diff] [blame] | 707 | |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 708 | if (events & (1 << IPCT_PROTOINFO) |
Pablo Neira Ayuso | 7b621c1 | 2006-11-29 02:35:32 +0100 | [diff] [blame] | 709 | && ctnetlink_dump_protoinfo(skb, ct) < 0) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 710 | goto nla_put_failure; |
Pablo Neira Ayuso | 7b621c1 | 2006-11-29 02:35:32 +0100 | [diff] [blame] | 711 | |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 712 | if ((events & (1 << IPCT_HELPER) || nfct_help(ct)) |
Pablo Neira Ayuso | 7b621c1 | 2006-11-29 02:35:32 +0100 | [diff] [blame] | 713 | && ctnetlink_dump_helpinfo(skb, ct) < 0) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 714 | goto nla_put_failure; |
Pablo Neira Ayuso | 7b621c1 | 2006-11-29 02:35:32 +0100 | [diff] [blame] | 715 | |
Eric Paris | ff660c8 | 2010-10-19 18:17:32 -0400 | [diff] [blame] | 716 | #ifdef CONFIG_NF_CONNTRACK_SECMARK |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 717 | if ((events & (1 << IPCT_SECMARK) || ct->secmark) |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 718 | && ctnetlink_dump_secctx(skb, ct) < 0) |
Pablo Neira Ayuso | 37fccd8 | 2007-12-17 22:28:41 -0800 | [diff] [blame] | 719 | goto nla_put_failure; |
Eric Paris | ff660c8 | 2010-10-19 18:17:32 -0400 | [diff] [blame] | 720 | #endif |
Florian Westphal | 0ceabd8 | 2013-01-11 06:30:45 +0000 | [diff] [blame] | 721 | if (events & (1 << IPCT_LABEL) && |
| 722 | ctnetlink_dump_labels(skb, ct) < 0) |
| 723 | goto nla_put_failure; |
Pablo Neira Ayuso | 7b621c1 | 2006-11-29 02:35:32 +0100 | [diff] [blame] | 724 | |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 725 | if (events & (1 << IPCT_RELATED) && |
Pablo Neira Ayuso | 0f417ce | 2007-12-17 22:28:19 -0800 | [diff] [blame] | 726 | ctnetlink_dump_master(skb, ct) < 0) |
| 727 | goto nla_put_failure; |
| 728 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 729 | if (events & (1 << IPCT_SEQADJ) && |
| 730 | ctnetlink_dump_ct_seq_adj(skb, ct) < 0) |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 731 | goto nla_put_failure; |
Mohammed Javid | 53d20ee | 2016-02-10 17:29:57 +0530 | [diff] [blame^] | 732 | |
| 733 | if (events & (1 << IPCT_COUNTER) && |
| 734 | ctnetlink_dump_acct(skb, ct, 0) < 0) |
| 735 | goto nla_put_failure; |
Pablo Neira Ayuso | 7b621c1 | 2006-11-29 02:35:32 +0100 | [diff] [blame] | 736 | } |
Pablo Neira Ayuso | b9a37e0 | 2006-08-22 00:31:49 -0700 | [diff] [blame] | 737 | |
Eric Leblond | a83099a | 2008-01-31 04:44:27 -0800 | [diff] [blame] | 738 | #ifdef CONFIG_NF_CONNTRACK_MARK |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 739 | if ((events & (1 << IPCT_MARK) || ct->mark) |
Eric Leblond | a83099a | 2008-01-31 04:44:27 -0800 | [diff] [blame] | 740 | && ctnetlink_dump_mark(skb, ct) < 0) |
| 741 | goto nla_put_failure; |
| 742 | #endif |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 743 | rcu_read_unlock(); |
Eric Leblond | a83099a | 2008-01-31 04:44:27 -0800 | [diff] [blame] | 744 | |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 745 | nlmsg_end(skb, nlh); |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 746 | err = nfnetlink_send(skb, net, item->portid, group, item->report, |
Alexey Dobriyan | cd8c20b | 2010-01-13 16:02:14 +0100 | [diff] [blame] | 747 | GFP_ATOMIC); |
Pablo Neira Ayuso | dd7669a | 2009-06-13 12:30:52 +0200 | [diff] [blame] | 748 | if (err == -ENOBUFS || err == -EAGAIN) |
| 749 | return -ENOBUFS; |
| 750 | |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 751 | return 0; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 752 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 753 | nla_put_failure: |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 754 | rcu_read_unlock(); |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 755 | nlmsg_cancel(skb, nlh); |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 756 | nlmsg_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 757 | kfree_skb(skb); |
Pablo Neira Ayuso | 150ace0 | 2009-04-17 17:47:31 +0200 | [diff] [blame] | 758 | errout: |
Pablo Neira Ayuso | 37b7ef7 | 2010-03-16 13:30:21 +0000 | [diff] [blame] | 759 | if (nfnetlink_set_err(net, 0, group, -ENOBUFS) > 0) |
| 760 | return -ENOBUFS; |
| 761 | |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 762 | return 0; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 763 | } |
| 764 | #endif /* CONFIG_NF_CONNTRACK_EVENTS */ |
| 765 | |
| 766 | static int ctnetlink_done(struct netlink_callback *cb) |
| 767 | { |
Patrick McHardy | 89f2e21 | 2006-05-29 18:24:58 -0700 | [diff] [blame] | 768 | if (cb->args[1]) |
| 769 | nf_ct_put((struct nf_conn *)cb->args[1]); |
Fabian Frederick | 397304b | 2014-06-20 22:38:58 +0200 | [diff] [blame] | 770 | kfree(cb->data); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 771 | return 0; |
| 772 | } |
| 773 | |
Kristian Evensen | 866476f | 2014-12-24 09:57:10 +0100 | [diff] [blame] | 774 | struct ctnetlink_filter { |
Pablo Neira Ayuso | 0f298a2 | 2012-02-24 14:41:50 +0000 | [diff] [blame] | 775 | struct { |
| 776 | u_int32_t val; |
| 777 | u_int32_t mask; |
| 778 | } mark; |
| 779 | }; |
| 780 | |
Kristian Evensen | 866476f | 2014-12-24 09:57:10 +0100 | [diff] [blame] | 781 | static struct ctnetlink_filter * |
| 782 | ctnetlink_alloc_filter(const struct nlattr * const cda[]) |
| 783 | { |
| 784 | #ifdef CONFIG_NF_CONNTRACK_MARK |
| 785 | struct ctnetlink_filter *filter; |
| 786 | |
| 787 | filter = kzalloc(sizeof(*filter), GFP_KERNEL); |
| 788 | if (filter == NULL) |
| 789 | return ERR_PTR(-ENOMEM); |
| 790 | |
| 791 | filter->mark.val = ntohl(nla_get_be32(cda[CTA_MARK])); |
| 792 | filter->mark.mask = ntohl(nla_get_be32(cda[CTA_MARK_MASK])); |
| 793 | |
| 794 | return filter; |
| 795 | #else |
| 796 | return ERR_PTR(-EOPNOTSUPP); |
| 797 | #endif |
| 798 | } |
| 799 | |
| 800 | static int ctnetlink_filter_match(struct nf_conn *ct, void *data) |
| 801 | { |
| 802 | struct ctnetlink_filter *filter = data; |
| 803 | |
| 804 | if (filter == NULL) |
| 805 | return 1; |
| 806 | |
| 807 | #ifdef CONFIG_NF_CONNTRACK_MARK |
| 808 | if ((ct->mark & filter->mark.mask) == filter->mark.val) |
| 809 | return 1; |
| 810 | #endif |
| 811 | |
| 812 | return 0; |
| 813 | } |
| 814 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 815 | static int |
| 816 | ctnetlink_dump_table(struct sk_buff *skb, struct netlink_callback *cb) |
| 817 | { |
Alexey Dobriyan | 9592a5c | 2010-01-13 16:04:18 +0100 | [diff] [blame] | 818 | struct net *net = sock_net(skb->sk); |
Patrick McHardy | 89f2e21 | 2006-05-29 18:24:58 -0700 | [diff] [blame] | 819 | struct nf_conn *ct, *last; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 820 | struct nf_conntrack_tuple_hash *h; |
Eric Dumazet | ea781f1 | 2009-03-25 21:05:46 +0100 | [diff] [blame] | 821 | struct hlist_nulls_node *n; |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 822 | struct nfgenmsg *nfmsg = nlmsg_data(cb->nlh); |
Pablo Neira Ayuso | 87711cb | 2006-01-05 12:19:23 -0800 | [diff] [blame] | 823 | u_int8_t l3proto = nfmsg->nfgen_family; |
Florian Westphal | 2344d64 | 2016-08-25 15:33:32 +0200 | [diff] [blame] | 824 | struct nf_conn *nf_ct_evict[8]; |
| 825 | int res, i; |
Jesper Dangaard Brouer | 93bb0ce | 2014-03-03 14:46:13 +0100 | [diff] [blame] | 826 | spinlock_t *lockp; |
| 827 | |
Patrick McHardy | d205dc4 | 2006-08-17 18:12:38 -0700 | [diff] [blame] | 828 | last = (struct nf_conn *)cb->args[1]; |
Florian Westphal | 2344d64 | 2016-08-25 15:33:32 +0200 | [diff] [blame] | 829 | i = 0; |
Jesper Dangaard Brouer | 93bb0ce | 2014-03-03 14:46:13 +0100 | [diff] [blame] | 830 | |
| 831 | local_bh_disable(); |
Florian Westphal | 56d52d4 | 2016-05-02 18:39:55 +0200 | [diff] [blame] | 832 | for (; cb->args[0] < nf_conntrack_htable_size; cb->args[0]++) { |
Patrick McHardy | 89f2e21 | 2006-05-29 18:24:58 -0700 | [diff] [blame] | 833 | restart: |
Florian Westphal | 2344d64 | 2016-08-25 15:33:32 +0200 | [diff] [blame] | 834 | while (i) { |
| 835 | i--; |
| 836 | if (nf_ct_should_gc(nf_ct_evict[i])) |
| 837 | nf_ct_kill(nf_ct_evict[i]); |
| 838 | nf_ct_put(nf_ct_evict[i]); |
| 839 | } |
| 840 | |
Jesper Dangaard Brouer | 93bb0ce | 2014-03-03 14:46:13 +0100 | [diff] [blame] | 841 | lockp = &nf_conntrack_locks[cb->args[0] % CONNTRACK_LOCKS]; |
Sasha Levin | b16c291 | 2016-01-18 19:23:51 -0500 | [diff] [blame] | 842 | nf_conntrack_lock(lockp); |
Florian Westphal | 56d52d4 | 2016-05-02 18:39:55 +0200 | [diff] [blame] | 843 | if (cb->args[0] >= nf_conntrack_htable_size) { |
Jesper Dangaard Brouer | 93bb0ce | 2014-03-03 14:46:13 +0100 | [diff] [blame] | 844 | spin_unlock(lockp); |
| 845 | goto out; |
| 846 | } |
Florian Westphal | 56d52d4 | 2016-05-02 18:39:55 +0200 | [diff] [blame] | 847 | hlist_nulls_for_each_entry(h, n, &nf_conntrack_hash[cb->args[0]], |
| 848 | hnnode) { |
Jozsef Kadlecsik | 5b1158e | 2006-12-02 22:07:13 -0800 | [diff] [blame] | 849 | if (NF_CT_DIRECTION(h) != IP_CT_DIR_ORIGINAL) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 850 | continue; |
| 851 | ct = nf_ct_tuplehash_to_ctrack(h); |
Florian Westphal | 2344d64 | 2016-08-25 15:33:32 +0200 | [diff] [blame] | 852 | if (nf_ct_is_expired(ct)) { |
| 853 | if (i < ARRAY_SIZE(nf_ct_evict) && |
| 854 | atomic_inc_not_zero(&ct->ct_general.use)) |
| 855 | nf_ct_evict[i++] = ct; |
| 856 | continue; |
| 857 | } |
| 858 | |
Florian Westphal | e0c7d47 | 2016-04-28 19:13:45 +0200 | [diff] [blame] | 859 | if (!net_eq(net, nf_ct_net(ct))) |
| 860 | continue; |
| 861 | |
Pablo Neira Ayuso | 87711cb | 2006-01-05 12:19:23 -0800 | [diff] [blame] | 862 | /* Dump entries of a given L3 protocol number. |
| 863 | * If it is not specified, ie. l3proto == 0, |
| 864 | * then dump everything. */ |
Patrick McHardy | 5e8fbe2 | 2008-04-14 11:15:52 +0200 | [diff] [blame] | 865 | if (l3proto && nf_ct_l3num(ct) != l3proto) |
Stephen Hemminger | 13ee6ac | 2011-01-11 23:54:42 +0100 | [diff] [blame] | 866 | continue; |
Patrick McHardy | d205dc4 | 2006-08-17 18:12:38 -0700 | [diff] [blame] | 867 | if (cb->args[1]) { |
| 868 | if (ct != last) |
Stephen Hemminger | 13ee6ac | 2011-01-11 23:54:42 +0100 | [diff] [blame] | 869 | continue; |
Patrick McHardy | d205dc4 | 2006-08-17 18:12:38 -0700 | [diff] [blame] | 870 | cb->args[1] = 0; |
Patrick McHardy | 89f2e21 | 2006-05-29 18:24:58 -0700 | [diff] [blame] | 871 | } |
Kristian Evensen | 866476f | 2014-12-24 09:57:10 +0100 | [diff] [blame] | 872 | if (!ctnetlink_filter_match(ct, cb->data)) |
Pablo Neira Ayuso | 0f298a2 | 2012-02-24 14:41:50 +0000 | [diff] [blame] | 873 | continue; |
Kristian Evensen | 866476f | 2014-12-24 09:57:10 +0100 | [diff] [blame] | 874 | |
Hans Schillstrom | 3b988ec | 2012-03-05 02:24:29 +0000 | [diff] [blame] | 875 | rcu_read_lock(); |
| 876 | res = |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 877 | ctnetlink_fill_info(skb, NETLINK_CB(cb->skb).portid, |
Hans Schillstrom | 3b988ec | 2012-03-05 02:24:29 +0000 | [diff] [blame] | 878 | cb->nlh->nlmsg_seq, |
| 879 | NFNL_MSG_TYPE(cb->nlh->nlmsg_type), |
| 880 | ct); |
| 881 | rcu_read_unlock(); |
| 882 | if (res < 0) { |
Pablo Neira Ayuso | c71caf4 | 2011-01-24 19:01:07 +0100 | [diff] [blame] | 883 | nf_conntrack_get(&ct->ct_general); |
Patrick McHardy | 89f2e21 | 2006-05-29 18:24:58 -0700 | [diff] [blame] | 884 | cb->args[1] = (unsigned long)ct; |
Jesper Dangaard Brouer | 93bb0ce | 2014-03-03 14:46:13 +0100 | [diff] [blame] | 885 | spin_unlock(lockp); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 886 | goto out; |
Patrick McHardy | 89f2e21 | 2006-05-29 18:24:58 -0700 | [diff] [blame] | 887 | } |
| 888 | } |
Jesper Dangaard Brouer | 93bb0ce | 2014-03-03 14:46:13 +0100 | [diff] [blame] | 889 | spin_unlock(lockp); |
Patrick McHardy | d205dc4 | 2006-08-17 18:12:38 -0700 | [diff] [blame] | 890 | if (cb->args[1]) { |
Patrick McHardy | 89f2e21 | 2006-05-29 18:24:58 -0700 | [diff] [blame] | 891 | cb->args[1] = 0; |
| 892 | goto restart; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 893 | } |
| 894 | } |
Patrick McHardy | 89f2e21 | 2006-05-29 18:24:58 -0700 | [diff] [blame] | 895 | out: |
Jesper Dangaard Brouer | 93bb0ce | 2014-03-03 14:46:13 +0100 | [diff] [blame] | 896 | local_bh_enable(); |
Patrick McHardy | d205dc4 | 2006-08-17 18:12:38 -0700 | [diff] [blame] | 897 | if (last) |
| 898 | nf_ct_put(last); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 899 | |
Florian Westphal | 2344d64 | 2016-08-25 15:33:32 +0200 | [diff] [blame] | 900 | while (i) { |
| 901 | i--; |
| 902 | if (nf_ct_should_gc(nf_ct_evict[i])) |
| 903 | nf_ct_kill(nf_ct_evict[i]); |
| 904 | nf_ct_put(nf_ct_evict[i]); |
| 905 | } |
| 906 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 907 | return skb->len; |
| 908 | } |
| 909 | |
Pablo Neira Ayuso | 4054ff4 | 2016-04-12 23:32:34 +0200 | [diff] [blame] | 910 | static int ctnetlink_parse_tuple_ip(struct nlattr *attr, |
| 911 | struct nf_conntrack_tuple *tuple) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 912 | { |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 913 | struct nlattr *tb[CTA_IP_MAX+1]; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 914 | struct nf_conntrack_l3proto *l3proto; |
| 915 | int ret = 0; |
| 916 | |
Daniel Borkmann | 130ffbc | 2013-06-12 17:54:51 +0200 | [diff] [blame] | 917 | ret = nla_parse_nested(tb, CTA_IP_MAX, attr, NULL); |
| 918 | if (ret < 0) |
| 919 | return ret; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 920 | |
Florian Westphal | cd91566 | 2009-03-18 17:28:37 +0100 | [diff] [blame] | 921 | rcu_read_lock(); |
| 922 | l3proto = __nf_ct_l3proto_find(tuple->src.l3num); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 923 | |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 924 | if (likely(l3proto->nlattr_to_tuple)) { |
| 925 | ret = nla_validate_nested(attr, CTA_IP_MAX, |
| 926 | l3proto->nla_policy); |
| 927 | if (ret == 0) |
| 928 | ret = l3proto->nlattr_to_tuple(tb, tuple); |
| 929 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 930 | |
Florian Westphal | cd91566 | 2009-03-18 17:28:37 +0100 | [diff] [blame] | 931 | rcu_read_unlock(); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 932 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 933 | return ret; |
| 934 | } |
| 935 | |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 936 | static const struct nla_policy proto_nla_policy[CTA_PROTO_MAX+1] = { |
| 937 | [CTA_PROTO_NUM] = { .type = NLA_U8 }, |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 938 | }; |
| 939 | |
Pablo Neira Ayuso | 4054ff4 | 2016-04-12 23:32:34 +0200 | [diff] [blame] | 940 | static int ctnetlink_parse_tuple_proto(struct nlattr *attr, |
| 941 | struct nf_conntrack_tuple *tuple) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 942 | { |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 943 | struct nlattr *tb[CTA_PROTO_MAX+1]; |
Martin Josefsson | 605dcad | 2006-11-29 02:35:06 +0100 | [diff] [blame] | 944 | struct nf_conntrack_l4proto *l4proto; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 945 | int ret = 0; |
| 946 | |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 947 | ret = nla_parse_nested(tb, CTA_PROTO_MAX, attr, proto_nla_policy); |
| 948 | if (ret < 0) |
| 949 | return ret; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 950 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 951 | if (!tb[CTA_PROTO_NUM]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 952 | return -EINVAL; |
Patrick McHardy | 77236b6 | 2007-12-17 22:29:45 -0800 | [diff] [blame] | 953 | tuple->dst.protonum = nla_get_u8(tb[CTA_PROTO_NUM]); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 954 | |
Florian Westphal | cd91566 | 2009-03-18 17:28:37 +0100 | [diff] [blame] | 955 | rcu_read_lock(); |
| 956 | l4proto = __nf_ct_l4proto_find(tuple->src.l3num, tuple->dst.protonum); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 957 | |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 958 | if (likely(l4proto->nlattr_to_tuple)) { |
| 959 | ret = nla_validate_nested(attr, CTA_PROTO_MAX, |
| 960 | l4proto->nla_policy); |
| 961 | if (ret == 0) |
| 962 | ret = l4proto->nlattr_to_tuple(tb, tuple); |
| 963 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 964 | |
Florian Westphal | cd91566 | 2009-03-18 17:28:37 +0100 | [diff] [blame] | 965 | rcu_read_unlock(); |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 966 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 967 | return ret; |
| 968 | } |
| 969 | |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 970 | static int |
| 971 | ctnetlink_parse_zone(const struct nlattr *attr, |
| 972 | struct nf_conntrack_zone *zone) |
| 973 | { |
Daniel Borkmann | 5e8018f | 2015-08-14 16:03:40 +0200 | [diff] [blame] | 974 | nf_ct_zone_init(zone, NF_CT_DEFAULT_ZONE_ID, |
| 975 | NF_CT_DEFAULT_ZONE_DIR, 0); |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 976 | #ifdef CONFIG_NF_CONNTRACK_ZONES |
| 977 | if (attr) |
| 978 | zone->id = ntohs(nla_get_be16(attr)); |
| 979 | #else |
| 980 | if (attr) |
| 981 | return -EOPNOTSUPP; |
| 982 | #endif |
| 983 | return 0; |
| 984 | } |
| 985 | |
| 986 | static int |
| 987 | ctnetlink_parse_tuple_zone(struct nlattr *attr, enum ctattr_type type, |
| 988 | struct nf_conntrack_zone *zone) |
| 989 | { |
| 990 | int ret; |
| 991 | |
| 992 | if (zone->id != NF_CT_DEFAULT_ZONE_ID) |
| 993 | return -EINVAL; |
| 994 | |
| 995 | ret = ctnetlink_parse_zone(attr, zone); |
| 996 | if (ret < 0) |
| 997 | return ret; |
| 998 | |
| 999 | if (type == CTA_TUPLE_REPLY) |
| 1000 | zone->dir = NF_CT_ZONE_DIR_REPL; |
| 1001 | else |
| 1002 | zone->dir = NF_CT_ZONE_DIR_ORIG; |
| 1003 | |
| 1004 | return 0; |
| 1005 | } |
| 1006 | |
Patrick McHardy | d0b0268 | 2010-02-10 15:38:33 +0100 | [diff] [blame] | 1007 | static const struct nla_policy tuple_nla_policy[CTA_TUPLE_MAX+1] = { |
| 1008 | [CTA_TUPLE_IP] = { .type = NLA_NESTED }, |
| 1009 | [CTA_TUPLE_PROTO] = { .type = NLA_NESTED }, |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 1010 | [CTA_TUPLE_ZONE] = { .type = NLA_U16 }, |
Patrick McHardy | d0b0268 | 2010-02-10 15:38:33 +0100 | [diff] [blame] | 1011 | }; |
| 1012 | |
Ilpo Järvinen | bb5cf80 | 2008-01-05 23:11:31 -0800 | [diff] [blame] | 1013 | static int |
Patrick McHardy | 3993832 | 2009-08-25 16:07:58 +0200 | [diff] [blame] | 1014 | ctnetlink_parse_tuple(const struct nlattr * const cda[], |
| 1015 | struct nf_conntrack_tuple *tuple, |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 1016 | enum ctattr_type type, u_int8_t l3num, |
| 1017 | struct nf_conntrack_zone *zone) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1018 | { |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1019 | struct nlattr *tb[CTA_TUPLE_MAX+1]; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1020 | int err; |
| 1021 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1022 | memset(tuple, 0, sizeof(*tuple)); |
| 1023 | |
Daniel Borkmann | 130ffbc | 2013-06-12 17:54:51 +0200 | [diff] [blame] | 1024 | err = nla_parse_nested(tb, CTA_TUPLE_MAX, cda[type], tuple_nla_policy); |
| 1025 | if (err < 0) |
| 1026 | return err; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1027 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1028 | if (!tb[CTA_TUPLE_IP]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1029 | return -EINVAL; |
| 1030 | |
| 1031 | tuple->src.l3num = l3num; |
| 1032 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1033 | err = ctnetlink_parse_tuple_ip(tb[CTA_TUPLE_IP], tuple); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1034 | if (err < 0) |
| 1035 | return err; |
| 1036 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1037 | if (!tb[CTA_TUPLE_PROTO]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1038 | return -EINVAL; |
| 1039 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1040 | err = ctnetlink_parse_tuple_proto(tb[CTA_TUPLE_PROTO], tuple); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1041 | if (err < 0) |
| 1042 | return err; |
| 1043 | |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 1044 | if (tb[CTA_TUPLE_ZONE]) { |
| 1045 | if (!zone) |
| 1046 | return -EINVAL; |
| 1047 | |
| 1048 | err = ctnetlink_parse_tuple_zone(tb[CTA_TUPLE_ZONE], |
| 1049 | type, zone); |
| 1050 | if (err < 0) |
| 1051 | return err; |
| 1052 | } |
| 1053 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1054 | /* orig and expect tuples get DIR_ORIGINAL */ |
| 1055 | if (type == CTA_TUPLE_REPLY) |
| 1056 | tuple->dst.dir = IP_CT_DIR_REPLY; |
| 1057 | else |
| 1058 | tuple->dst.dir = IP_CT_DIR_ORIGINAL; |
| 1059 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1060 | return 0; |
| 1061 | } |
| 1062 | |
Patrick McHardy | d0b0268 | 2010-02-10 15:38:33 +0100 | [diff] [blame] | 1063 | static const struct nla_policy help_nla_policy[CTA_HELP_MAX+1] = { |
Florian Westphal | 6d1fafc | 2012-11-22 01:32:46 +0000 | [diff] [blame] | 1064 | [CTA_HELP_NAME] = { .type = NLA_NUL_STRING, |
| 1065 | .len = NF_CT_HELPER_NAME_LEN - 1 }, |
Patrick McHardy | d0b0268 | 2010-02-10 15:38:33 +0100 | [diff] [blame] | 1066 | }; |
| 1067 | |
Pablo Neira Ayuso | 4054ff4 | 2016-04-12 23:32:34 +0200 | [diff] [blame] | 1068 | static int ctnetlink_parse_help(const struct nlattr *attr, char **helper_name, |
| 1069 | struct nlattr **helpinfo) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1070 | { |
Daniel Borkmann | 130ffbc | 2013-06-12 17:54:51 +0200 | [diff] [blame] | 1071 | int err; |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1072 | struct nlattr *tb[CTA_HELP_MAX+1]; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1073 | |
Daniel Borkmann | 130ffbc | 2013-06-12 17:54:51 +0200 | [diff] [blame] | 1074 | err = nla_parse_nested(tb, CTA_HELP_MAX, attr, help_nla_policy); |
| 1075 | if (err < 0) |
| 1076 | return err; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1077 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1078 | if (!tb[CTA_HELP_NAME]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1079 | return -EINVAL; |
| 1080 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1081 | *helper_name = nla_data(tb[CTA_HELP_NAME]); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1082 | |
Pablo Neira Ayuso | ae243be | 2012-06-07 14:19:42 +0200 | [diff] [blame] | 1083 | if (tb[CTA_HELP_INFO]) |
| 1084 | *helpinfo = tb[CTA_HELP_INFO]; |
| 1085 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1086 | return 0; |
| 1087 | } |
| 1088 | |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 1089 | static const struct nla_policy ct_nla_policy[CTA_MAX+1] = { |
Patrick McHardy | d0b0268 | 2010-02-10 15:38:33 +0100 | [diff] [blame] | 1090 | [CTA_TUPLE_ORIG] = { .type = NLA_NESTED }, |
| 1091 | [CTA_TUPLE_REPLY] = { .type = NLA_NESTED }, |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 1092 | [CTA_STATUS] = { .type = NLA_U32 }, |
Patrick McHardy | d0b0268 | 2010-02-10 15:38:33 +0100 | [diff] [blame] | 1093 | [CTA_PROTOINFO] = { .type = NLA_NESTED }, |
| 1094 | [CTA_HELP] = { .type = NLA_NESTED }, |
| 1095 | [CTA_NAT_SRC] = { .type = NLA_NESTED }, |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 1096 | [CTA_TIMEOUT] = { .type = NLA_U32 }, |
| 1097 | [CTA_MARK] = { .type = NLA_U32 }, |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 1098 | [CTA_ID] = { .type = NLA_U32 }, |
Patrick McHardy | d0b0268 | 2010-02-10 15:38:33 +0100 | [diff] [blame] | 1099 | [CTA_NAT_DST] = { .type = NLA_NESTED }, |
| 1100 | [CTA_TUPLE_MASTER] = { .type = NLA_NESTED }, |
Florian Westphal | 6d1fafc | 2012-11-22 01:32:46 +0000 | [diff] [blame] | 1101 | [CTA_NAT_SEQ_ADJ_ORIG] = { .type = NLA_NESTED }, |
| 1102 | [CTA_NAT_SEQ_ADJ_REPLY] = { .type = NLA_NESTED }, |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 1103 | [CTA_ZONE] = { .type = NLA_U16 }, |
Pablo Neira Ayuso | 0f298a2 | 2012-02-24 14:41:50 +0000 | [diff] [blame] | 1104 | [CTA_MARK_MASK] = { .type = NLA_U32 }, |
Florian Westphal | 9b21f6a | 2013-01-11 06:30:46 +0000 | [diff] [blame] | 1105 | [CTA_LABELS] = { .type = NLA_BINARY, |
Florian Westphal | d2bf2f3 | 2014-02-18 15:25:32 +0100 | [diff] [blame] | 1106 | .len = NF_CT_LABELS_MAX_SIZE }, |
Florian Westphal | 9b21f6a | 2013-01-11 06:30:46 +0000 | [diff] [blame] | 1107 | [CTA_LABELS_MASK] = { .type = NLA_BINARY, |
Florian Westphal | d2bf2f3 | 2014-02-18 15:25:32 +0100 | [diff] [blame] | 1108 | .len = NF_CT_LABELS_MAX_SIZE }, |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1109 | }; |
| 1110 | |
Kristian Evensen | 866476f | 2014-12-24 09:57:10 +0100 | [diff] [blame] | 1111 | static int ctnetlink_flush_conntrack(struct net *net, |
| 1112 | const struct nlattr * const cda[], |
| 1113 | u32 portid, int report) |
| 1114 | { |
| 1115 | struct ctnetlink_filter *filter = NULL; |
| 1116 | |
| 1117 | if (cda[CTA_MARK] && cda[CTA_MARK_MASK]) { |
| 1118 | filter = ctnetlink_alloc_filter(cda); |
| 1119 | if (IS_ERR(filter)) |
| 1120 | return PTR_ERR(filter); |
| 1121 | } |
| 1122 | |
| 1123 | nf_ct_iterate_cleanup(net, ctnetlink_filter_match, filter, |
| 1124 | portid, report); |
| 1125 | kfree(filter); |
| 1126 | |
| 1127 | return 0; |
| 1128 | } |
| 1129 | |
Pablo Neira Ayuso | 7b8002a | 2015-12-15 18:41:56 +0100 | [diff] [blame] | 1130 | static int ctnetlink_del_conntrack(struct net *net, struct sock *ctnl, |
| 1131 | struct sk_buff *skb, |
| 1132 | const struct nlmsghdr *nlh, |
| 1133 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1134 | { |
| 1135 | struct nf_conntrack_tuple_hash *h; |
| 1136 | struct nf_conntrack_tuple tuple; |
| 1137 | struct nf_conn *ct; |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 1138 | struct nfgenmsg *nfmsg = nlmsg_data(nlh); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1139 | u_int8_t u3 = nfmsg->nfgen_family; |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 1140 | struct nf_conntrack_zone zone; |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 1141 | int err; |
| 1142 | |
| 1143 | err = ctnetlink_parse_zone(cda[CTA_ZONE], &zone); |
| 1144 | if (err < 0) |
| 1145 | return err; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1146 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1147 | if (cda[CTA_TUPLE_ORIG]) |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 1148 | err = ctnetlink_parse_tuple(cda, &tuple, CTA_TUPLE_ORIG, |
| 1149 | u3, &zone); |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1150 | else if (cda[CTA_TUPLE_REPLY]) |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 1151 | err = ctnetlink_parse_tuple(cda, &tuple, CTA_TUPLE_REPLY, |
| 1152 | u3, &zone); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1153 | else { |
Kristian Evensen | 866476f | 2014-12-24 09:57:10 +0100 | [diff] [blame] | 1154 | return ctnetlink_flush_conntrack(net, cda, |
| 1155 | NETLINK_CB(skb).portid, |
| 1156 | nlmsg_report(nlh)); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1157 | } |
| 1158 | |
| 1159 | if (err < 0) |
| 1160 | return err; |
| 1161 | |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 1162 | h = nf_conntrack_find_get(net, &zone, &tuple); |
Pablo Neira Ayuso | 9ea8cfd | 2006-10-12 14:09:16 -0700 | [diff] [blame] | 1163 | if (!h) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1164 | return -ENOENT; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1165 | |
| 1166 | ct = nf_ct_tuplehash_to_ctrack(h); |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 1167 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1168 | if (cda[CTA_ID]) { |
Patrick McHardy | 77236b6 | 2007-12-17 22:29:45 -0800 | [diff] [blame] | 1169 | u_int32_t id = ntohl(nla_get_be32(cda[CTA_ID])); |
Patrick McHardy | 7f85f91 | 2007-09-28 14:41:27 -0700 | [diff] [blame] | 1170 | if (id != (u32)(unsigned long)ct) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1171 | nf_ct_put(ct); |
| 1172 | return -ENOENT; |
| 1173 | } |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 1174 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1175 | |
Florian Westphal | f330a7f | 2016-08-25 15:33:31 +0200 | [diff] [blame] | 1176 | nf_ct_delete(ct, NETLINK_CB(skb).portid, nlmsg_report(nlh)); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1177 | nf_ct_put(ct); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1178 | |
| 1179 | return 0; |
| 1180 | } |
| 1181 | |
Pablo Neira Ayuso | 7b8002a | 2015-12-15 18:41:56 +0100 | [diff] [blame] | 1182 | static int ctnetlink_get_conntrack(struct net *net, struct sock *ctnl, |
| 1183 | struct sk_buff *skb, |
| 1184 | const struct nlmsghdr *nlh, |
| 1185 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1186 | { |
| 1187 | struct nf_conntrack_tuple_hash *h; |
| 1188 | struct nf_conntrack_tuple tuple; |
| 1189 | struct nf_conn *ct; |
| 1190 | struct sk_buff *skb2 = NULL; |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 1191 | struct nfgenmsg *nfmsg = nlmsg_data(nlh); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1192 | u_int8_t u3 = nfmsg->nfgen_family; |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 1193 | struct nf_conntrack_zone zone; |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 1194 | int err; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1195 | |
Pablo Neira Ayuso | 80d326f | 2012-02-24 14:30:15 +0000 | [diff] [blame] | 1196 | if (nlh->nlmsg_flags & NLM_F_DUMP) { |
| 1197 | struct netlink_dump_control c = { |
| 1198 | .dump = ctnetlink_dump_table, |
| 1199 | .done = ctnetlink_done, |
| 1200 | }; |
Kristian Evensen | 866476f | 2014-12-24 09:57:10 +0100 | [diff] [blame] | 1201 | |
Pablo Neira Ayuso | 0f298a2 | 2012-02-24 14:41:50 +0000 | [diff] [blame] | 1202 | if (cda[CTA_MARK] && cda[CTA_MARK_MASK]) { |
Kristian Evensen | 866476f | 2014-12-24 09:57:10 +0100 | [diff] [blame] | 1203 | struct ctnetlink_filter *filter; |
Pablo Neira Ayuso | 0f298a2 | 2012-02-24 14:41:50 +0000 | [diff] [blame] | 1204 | |
Kristian Evensen | 866476f | 2014-12-24 09:57:10 +0100 | [diff] [blame] | 1205 | filter = ctnetlink_alloc_filter(cda); |
| 1206 | if (IS_ERR(filter)) |
| 1207 | return PTR_ERR(filter); |
Pablo Neira Ayuso | 0f298a2 | 2012-02-24 14:41:50 +0000 | [diff] [blame] | 1208 | |
Pablo Neira Ayuso | 0f298a2 | 2012-02-24 14:41:50 +0000 | [diff] [blame] | 1209 | c.data = filter; |
| 1210 | } |
Pablo Neira Ayuso | 80d326f | 2012-02-24 14:30:15 +0000 | [diff] [blame] | 1211 | return netlink_dump_start(ctnl, skb, nlh, &c); |
| 1212 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1213 | |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 1214 | err = ctnetlink_parse_zone(cda[CTA_ZONE], &zone); |
| 1215 | if (err < 0) |
| 1216 | return err; |
| 1217 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1218 | if (cda[CTA_TUPLE_ORIG]) |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 1219 | err = ctnetlink_parse_tuple(cda, &tuple, CTA_TUPLE_ORIG, |
| 1220 | u3, &zone); |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1221 | else if (cda[CTA_TUPLE_REPLY]) |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 1222 | err = ctnetlink_parse_tuple(cda, &tuple, CTA_TUPLE_REPLY, |
| 1223 | u3, &zone); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1224 | else |
| 1225 | return -EINVAL; |
| 1226 | |
| 1227 | if (err < 0) |
| 1228 | return err; |
| 1229 | |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 1230 | h = nf_conntrack_find_get(net, &zone, &tuple); |
Pablo Neira Ayuso | 9ea8cfd | 2006-10-12 14:09:16 -0700 | [diff] [blame] | 1231 | if (!h) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1232 | return -ENOENT; |
Pablo Neira Ayuso | 9ea8cfd | 2006-10-12 14:09:16 -0700 | [diff] [blame] | 1233 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1234 | ct = nf_ct_tuplehash_to_ctrack(h); |
| 1235 | |
| 1236 | err = -ENOMEM; |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 1237 | skb2 = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| 1238 | if (skb2 == NULL) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1239 | nf_ct_put(ct); |
| 1240 | return -ENOMEM; |
| 1241 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1242 | |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 1243 | rcu_read_lock(); |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 1244 | err = ctnetlink_fill_info(skb2, NETLINK_CB(skb).portid, nlh->nlmsg_seq, |
Pablo Neira Ayuso | 80e60e6 | 2011-12-24 14:11:39 +0100 | [diff] [blame] | 1245 | NFNL_MSG_TYPE(nlh->nlmsg_type), ct); |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 1246 | rcu_read_unlock(); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1247 | nf_ct_put(ct); |
| 1248 | if (err <= 0) |
| 1249 | goto free; |
| 1250 | |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 1251 | err = netlink_unicast(ctnl, skb2, NETLINK_CB(skb).portid, MSG_DONTWAIT); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1252 | if (err < 0) |
| 1253 | goto out; |
| 1254 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1255 | return 0; |
| 1256 | |
| 1257 | free: |
| 1258 | kfree_skb(skb2); |
| 1259 | out: |
Pablo Neira Ayuso | f31e8d49 | 2011-01-13 14:19:55 +0100 | [diff] [blame] | 1260 | /* this avoids a loop in nfnetlink. */ |
| 1261 | return err == -EAGAIN ? -ENOBUFS : err; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1262 | } |
| 1263 | |
Pablo Neira Ayuso | d871bef | 2012-11-27 14:49:42 +0100 | [diff] [blame] | 1264 | static int ctnetlink_done_list(struct netlink_callback *cb) |
| 1265 | { |
| 1266 | if (cb->args[1]) |
| 1267 | nf_ct_put((struct nf_conn *)cb->args[1]); |
| 1268 | return 0; |
| 1269 | } |
| 1270 | |
| 1271 | static int |
Jesper Dangaard Brouer | b7779d0 | 2014-03-03 14:45:20 +0100 | [diff] [blame] | 1272 | ctnetlink_dump_list(struct sk_buff *skb, struct netlink_callback *cb, bool dying) |
Pablo Neira Ayuso | d871bef | 2012-11-27 14:49:42 +0100 | [diff] [blame] | 1273 | { |
Florian Westphal | cd5f336 | 2014-06-08 11:41:23 +0200 | [diff] [blame] | 1274 | struct nf_conn *ct, *last; |
Pablo Neira Ayuso | d871bef | 2012-11-27 14:49:42 +0100 | [diff] [blame] | 1275 | struct nf_conntrack_tuple_hash *h; |
| 1276 | struct hlist_nulls_node *n; |
| 1277 | struct nfgenmsg *nfmsg = nlmsg_data(cb->nlh); |
| 1278 | u_int8_t l3proto = nfmsg->nfgen_family; |
| 1279 | int res; |
Jesper Dangaard Brouer | b7779d0 | 2014-03-03 14:45:20 +0100 | [diff] [blame] | 1280 | int cpu; |
| 1281 | struct hlist_nulls_head *list; |
| 1282 | struct net *net = sock_net(skb->sk); |
Pablo Neira Ayuso | d871bef | 2012-11-27 14:49:42 +0100 | [diff] [blame] | 1283 | |
| 1284 | if (cb->args[2]) |
| 1285 | return 0; |
| 1286 | |
Florian Westphal | cd5f336 | 2014-06-08 11:41:23 +0200 | [diff] [blame] | 1287 | last = (struct nf_conn *)cb->args[1]; |
| 1288 | |
Jesper Dangaard Brouer | b7779d0 | 2014-03-03 14:45:20 +0100 | [diff] [blame] | 1289 | for (cpu = cb->args[0]; cpu < nr_cpu_ids; cpu++) { |
| 1290 | struct ct_pcpu *pcpu; |
| 1291 | |
| 1292 | if (!cpu_possible(cpu)) |
Pablo Neira Ayuso | d871bef | 2012-11-27 14:49:42 +0100 | [diff] [blame] | 1293 | continue; |
Jesper Dangaard Brouer | b7779d0 | 2014-03-03 14:45:20 +0100 | [diff] [blame] | 1294 | |
| 1295 | pcpu = per_cpu_ptr(net->ct.pcpu_lists, cpu); |
| 1296 | spin_lock_bh(&pcpu->lock); |
Jesper Dangaard Brouer | b7779d0 | 2014-03-03 14:45:20 +0100 | [diff] [blame] | 1297 | list = dying ? &pcpu->dying : &pcpu->unconfirmed; |
| 1298 | restart: |
| 1299 | hlist_nulls_for_each_entry(h, n, list, hnnode) { |
| 1300 | ct = nf_ct_tuplehash_to_ctrack(h); |
| 1301 | if (l3proto && nf_ct_l3num(ct) != l3proto) |
Pablo Neira Ayuso | d871bef | 2012-11-27 14:49:42 +0100 | [diff] [blame] | 1302 | continue; |
Jesper Dangaard Brouer | b7779d0 | 2014-03-03 14:45:20 +0100 | [diff] [blame] | 1303 | if (cb->args[1]) { |
| 1304 | if (ct != last) |
| 1305 | continue; |
| 1306 | cb->args[1] = 0; |
| 1307 | } |
| 1308 | rcu_read_lock(); |
| 1309 | res = ctnetlink_fill_info(skb, NETLINK_CB(cb->skb).portid, |
| 1310 | cb->nlh->nlmsg_seq, |
| 1311 | NFNL_MSG_TYPE(cb->nlh->nlmsg_type), |
| 1312 | ct); |
| 1313 | rcu_read_unlock(); |
| 1314 | if (res < 0) { |
Florian Westphal | cd5f336 | 2014-06-08 11:41:23 +0200 | [diff] [blame] | 1315 | if (!atomic_inc_not_zero(&ct->ct_general.use)) |
| 1316 | continue; |
Pablo Neira Ayuso | 266155b | 2014-06-05 14:28:44 +0200 | [diff] [blame] | 1317 | cb->args[0] = cpu; |
Jesper Dangaard Brouer | b7779d0 | 2014-03-03 14:45:20 +0100 | [diff] [blame] | 1318 | cb->args[1] = (unsigned long)ct; |
| 1319 | spin_unlock_bh(&pcpu->lock); |
| 1320 | goto out; |
| 1321 | } |
| 1322 | } |
| 1323 | if (cb->args[1]) { |
Pablo Neira Ayuso | d871bef | 2012-11-27 14:49:42 +0100 | [diff] [blame] | 1324 | cb->args[1] = 0; |
Jesper Dangaard Brouer | b7779d0 | 2014-03-03 14:45:20 +0100 | [diff] [blame] | 1325 | goto restart; |
Pablo Neira Ayuso | 266155b | 2014-06-05 14:28:44 +0200 | [diff] [blame] | 1326 | } |
Jesper Dangaard Brouer | b7779d0 | 2014-03-03 14:45:20 +0100 | [diff] [blame] | 1327 | spin_unlock_bh(&pcpu->lock); |
Pablo Neira Ayuso | d871bef | 2012-11-27 14:49:42 +0100 | [diff] [blame] | 1328 | } |
Pablo Neira Ayuso | 266155b | 2014-06-05 14:28:44 +0200 | [diff] [blame] | 1329 | cb->args[2] = 1; |
Pablo Neira Ayuso | d871bef | 2012-11-27 14:49:42 +0100 | [diff] [blame] | 1330 | out: |
Pablo Neira Ayuso | d871bef | 2012-11-27 14:49:42 +0100 | [diff] [blame] | 1331 | if (last) |
| 1332 | nf_ct_put(last); |
| 1333 | |
| 1334 | return skb->len; |
| 1335 | } |
| 1336 | |
| 1337 | static int |
| 1338 | ctnetlink_dump_dying(struct sk_buff *skb, struct netlink_callback *cb) |
| 1339 | { |
Jesper Dangaard Brouer | b7779d0 | 2014-03-03 14:45:20 +0100 | [diff] [blame] | 1340 | return ctnetlink_dump_list(skb, cb, true); |
Pablo Neira Ayuso | d871bef | 2012-11-27 14:49:42 +0100 | [diff] [blame] | 1341 | } |
| 1342 | |
Pablo Neira Ayuso | 7b8002a | 2015-12-15 18:41:56 +0100 | [diff] [blame] | 1343 | static int ctnetlink_get_ct_dying(struct net *net, struct sock *ctnl, |
| 1344 | struct sk_buff *skb, |
| 1345 | const struct nlmsghdr *nlh, |
| 1346 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | d871bef | 2012-11-27 14:49:42 +0100 | [diff] [blame] | 1347 | { |
| 1348 | if (nlh->nlmsg_flags & NLM_F_DUMP) { |
| 1349 | struct netlink_dump_control c = { |
| 1350 | .dump = ctnetlink_dump_dying, |
| 1351 | .done = ctnetlink_done_list, |
| 1352 | }; |
| 1353 | return netlink_dump_start(ctnl, skb, nlh, &c); |
| 1354 | } |
| 1355 | |
| 1356 | return -EOPNOTSUPP; |
| 1357 | } |
| 1358 | |
| 1359 | static int |
| 1360 | ctnetlink_dump_unconfirmed(struct sk_buff *skb, struct netlink_callback *cb) |
| 1361 | { |
Jesper Dangaard Brouer | b7779d0 | 2014-03-03 14:45:20 +0100 | [diff] [blame] | 1362 | return ctnetlink_dump_list(skb, cb, false); |
Pablo Neira Ayuso | d871bef | 2012-11-27 14:49:42 +0100 | [diff] [blame] | 1363 | } |
| 1364 | |
Pablo Neira Ayuso | 7b8002a | 2015-12-15 18:41:56 +0100 | [diff] [blame] | 1365 | static int ctnetlink_get_ct_unconfirmed(struct net *net, struct sock *ctnl, |
| 1366 | struct sk_buff *skb, |
| 1367 | const struct nlmsghdr *nlh, |
| 1368 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | d871bef | 2012-11-27 14:49:42 +0100 | [diff] [blame] | 1369 | { |
| 1370 | if (nlh->nlmsg_flags & NLM_F_DUMP) { |
| 1371 | struct netlink_dump_control c = { |
| 1372 | .dump = ctnetlink_dump_unconfirmed, |
| 1373 | .done = ctnetlink_done_list, |
| 1374 | }; |
| 1375 | return netlink_dump_start(ctnl, skb, nlh, &c); |
| 1376 | } |
| 1377 | |
| 1378 | return -EOPNOTSUPP; |
| 1379 | } |
| 1380 | |
Pablo Neira Ayuso | 6767184 | 2008-10-20 03:34:27 -0700 | [diff] [blame] | 1381 | #ifdef CONFIG_NF_NAT_NEEDED |
Ilpo Järvinen | bb5cf80 | 2008-01-05 23:11:31 -0800 | [diff] [blame] | 1382 | static int |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 1383 | ctnetlink_parse_nat_setup(struct nf_conn *ct, |
| 1384 | enum nf_nat_manip_type manip, |
Patrick McHardy | 3993832 | 2009-08-25 16:07:58 +0200 | [diff] [blame] | 1385 | const struct nlattr *attr) |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 1386 | { |
| 1387 | typeof(nfnetlink_parse_nat_setup_hook) parse_nat_setup; |
Patrick McHardy | c7232c9 | 2012-08-26 19:14:06 +0200 | [diff] [blame] | 1388 | int err; |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 1389 | |
| 1390 | parse_nat_setup = rcu_dereference(nfnetlink_parse_nat_setup_hook); |
| 1391 | if (!parse_nat_setup) { |
Johannes Berg | 95a5afc | 2008-10-16 15:24:51 -0700 | [diff] [blame] | 1392 | #ifdef CONFIG_MODULES |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 1393 | rcu_read_unlock(); |
Pablo Neira Ayuso | c14b78e | 2013-02-05 01:50:26 +0100 | [diff] [blame] | 1394 | nfnl_unlock(NFNL_SUBSYS_CTNETLINK); |
Patrick McHardy | c7232c9 | 2012-08-26 19:14:06 +0200 | [diff] [blame] | 1395 | if (request_module("nf-nat") < 0) { |
Pablo Neira Ayuso | c14b78e | 2013-02-05 01:50:26 +0100 | [diff] [blame] | 1396 | nfnl_lock(NFNL_SUBSYS_CTNETLINK); |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 1397 | rcu_read_lock(); |
| 1398 | return -EOPNOTSUPP; |
| 1399 | } |
Pablo Neira Ayuso | c14b78e | 2013-02-05 01:50:26 +0100 | [diff] [blame] | 1400 | nfnl_lock(NFNL_SUBSYS_CTNETLINK); |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 1401 | rcu_read_lock(); |
| 1402 | if (nfnetlink_parse_nat_setup_hook) |
| 1403 | return -EAGAIN; |
| 1404 | #endif |
| 1405 | return -EOPNOTSUPP; |
| 1406 | } |
| 1407 | |
Patrick McHardy | c7232c9 | 2012-08-26 19:14:06 +0200 | [diff] [blame] | 1408 | err = parse_nat_setup(ct, manip, attr); |
| 1409 | if (err == -EAGAIN) { |
| 1410 | #ifdef CONFIG_MODULES |
| 1411 | rcu_read_unlock(); |
Pablo Neira Ayuso | c14b78e | 2013-02-05 01:50:26 +0100 | [diff] [blame] | 1412 | nfnl_unlock(NFNL_SUBSYS_CTNETLINK); |
Patrick McHardy | c7232c9 | 2012-08-26 19:14:06 +0200 | [diff] [blame] | 1413 | if (request_module("nf-nat-%u", nf_ct_l3num(ct)) < 0) { |
Pablo Neira Ayuso | c14b78e | 2013-02-05 01:50:26 +0100 | [diff] [blame] | 1414 | nfnl_lock(NFNL_SUBSYS_CTNETLINK); |
Patrick McHardy | c7232c9 | 2012-08-26 19:14:06 +0200 | [diff] [blame] | 1415 | rcu_read_lock(); |
| 1416 | return -EOPNOTSUPP; |
| 1417 | } |
Pablo Neira Ayuso | c14b78e | 2013-02-05 01:50:26 +0100 | [diff] [blame] | 1418 | nfnl_lock(NFNL_SUBSYS_CTNETLINK); |
Patrick McHardy | c7232c9 | 2012-08-26 19:14:06 +0200 | [diff] [blame] | 1419 | rcu_read_lock(); |
| 1420 | #else |
| 1421 | err = -EOPNOTSUPP; |
| 1422 | #endif |
| 1423 | } |
| 1424 | return err; |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 1425 | } |
Pablo Neira Ayuso | 6767184 | 2008-10-20 03:34:27 -0700 | [diff] [blame] | 1426 | #endif |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 1427 | |
| 1428 | static int |
Patrick McHardy | 3993832 | 2009-08-25 16:07:58 +0200 | [diff] [blame] | 1429 | ctnetlink_change_status(struct nf_conn *ct, const struct nlattr * const cda[]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1430 | { |
| 1431 | unsigned long d; |
Patrick McHardy | 77236b6 | 2007-12-17 22:29:45 -0800 | [diff] [blame] | 1432 | unsigned int status = ntohl(nla_get_be32(cda[CTA_STATUS])); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1433 | d = ct->status ^ status; |
| 1434 | |
| 1435 | if (d & (IPS_EXPECTED|IPS_CONFIRMED|IPS_DYING)) |
| 1436 | /* unchangeable */ |
Pablo Neira Ayuso | 0adf9d6 | 2008-06-09 15:56:20 -0700 | [diff] [blame] | 1437 | return -EBUSY; |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 1438 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1439 | if (d & IPS_SEEN_REPLY && !(status & IPS_SEEN_REPLY)) |
| 1440 | /* SEEN_REPLY bit can only be set */ |
Pablo Neira Ayuso | 0adf9d6 | 2008-06-09 15:56:20 -0700 | [diff] [blame] | 1441 | return -EBUSY; |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 1442 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1443 | if (d & IPS_ASSURED && !(status & IPS_ASSURED)) |
| 1444 | /* ASSURED bit can only be set */ |
Pablo Neira Ayuso | 0adf9d6 | 2008-06-09 15:56:20 -0700 | [diff] [blame] | 1445 | return -EBUSY; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1446 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1447 | /* Be careful here, modifying NAT bits can screw up things, |
| 1448 | * so don't let users modify them directly if they don't pass |
Jozsef Kadlecsik | 5b1158e | 2006-12-02 22:07:13 -0800 | [diff] [blame] | 1449 | * nf_nat_range. */ |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1450 | ct->status |= status & ~(IPS_NAT_DONE_MASK | IPS_NAT_MASK); |
| 1451 | return 0; |
| 1452 | } |
| 1453 | |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 1454 | static int |
Pablo Neira Ayuso | 0eba801 | 2014-02-16 12:15:43 +0100 | [diff] [blame] | 1455 | ctnetlink_setup_nat(struct nf_conn *ct, const struct nlattr * const cda[]) |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 1456 | { |
| 1457 | #ifdef CONFIG_NF_NAT_NEEDED |
| 1458 | int ret; |
| 1459 | |
Florian Westphal | fe337ac | 2014-04-28 21:07:31 +0200 | [diff] [blame] | 1460 | if (!cda[CTA_NAT_DST] && !cda[CTA_NAT_SRC]) |
| 1461 | return 0; |
| 1462 | |
Pablo Neira Ayuso | 0eba801 | 2014-02-16 12:15:43 +0100 | [diff] [blame] | 1463 | ret = ctnetlink_parse_nat_setup(ct, NF_NAT_MANIP_DST, |
| 1464 | cda[CTA_NAT_DST]); |
| 1465 | if (ret < 0) |
| 1466 | return ret; |
| 1467 | |
| 1468 | ret = ctnetlink_parse_nat_setup(ct, NF_NAT_MANIP_SRC, |
| 1469 | cda[CTA_NAT_SRC]); |
| 1470 | return ret; |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 1471 | #else |
Pablo Neira Ayuso | 0eba801 | 2014-02-16 12:15:43 +0100 | [diff] [blame] | 1472 | if (!cda[CTA_NAT_DST] && !cda[CTA_NAT_SRC]) |
| 1473 | return 0; |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 1474 | return -EOPNOTSUPP; |
| 1475 | #endif |
| 1476 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1477 | |
Pablo Neira Ayuso | 4054ff4 | 2016-04-12 23:32:34 +0200 | [diff] [blame] | 1478 | static int ctnetlink_change_helper(struct nf_conn *ct, |
| 1479 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1480 | { |
| 1481 | struct nf_conntrack_helper *helper; |
Harald Welte | dc808fe | 2006-03-20 17:56:32 -0800 | [diff] [blame] | 1482 | struct nf_conn_help *help = nfct_help(ct); |
Pablo Neira Ayuso | 29fe1b4 | 2009-04-22 02:26:37 -0700 | [diff] [blame] | 1483 | char *helpname = NULL; |
Pablo Neira Ayuso | ae243be | 2012-06-07 14:19:42 +0200 | [diff] [blame] | 1484 | struct nlattr *helpinfo = NULL; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1485 | int err; |
| 1486 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1487 | /* don't change helper of sibling connections */ |
| 1488 | if (ct->master) |
Pablo Neira Ayuso | 0adf9d6 | 2008-06-09 15:56:20 -0700 | [diff] [blame] | 1489 | return -EBUSY; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1490 | |
Pablo Neira Ayuso | ae243be | 2012-06-07 14:19:42 +0200 | [diff] [blame] | 1491 | err = ctnetlink_parse_help(cda[CTA_HELP], &helpname, &helpinfo); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1492 | if (err < 0) |
| 1493 | return err; |
| 1494 | |
Yasuyuki Kozakai | df293bb | 2007-05-10 14:15:58 -0700 | [diff] [blame] | 1495 | if (!strcmp(helpname, "")) { |
| 1496 | if (help && help->helper) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1497 | /* we had a helper before ... */ |
| 1498 | nf_ct_remove_expectations(ct); |
Stephen Hemminger | a9b3cd7 | 2011-08-01 16:19:00 +0000 | [diff] [blame] | 1499 | RCU_INIT_POINTER(help->helper, NULL); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1500 | } |
Yasuyuki Kozakai | df293bb | 2007-05-10 14:15:58 -0700 | [diff] [blame] | 1501 | |
| 1502 | return 0; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1503 | } |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 1504 | |
Patrick McHardy | 794e687 | 2010-02-03 13:41:29 +0100 | [diff] [blame] | 1505 | helper = __nf_conntrack_helper_find(helpname, nf_ct_l3num(ct), |
| 1506 | nf_ct_protonum(ct)); |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1507 | if (helper == NULL) { |
| 1508 | #ifdef CONFIG_MODULES |
Jesper Dangaard Brouer | ca7433d | 2014-03-03 14:46:01 +0100 | [diff] [blame] | 1509 | spin_unlock_bh(&nf_conntrack_expect_lock); |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1510 | |
| 1511 | if (request_module("nfct-helper-%s", helpname) < 0) { |
Jesper Dangaard Brouer | ca7433d | 2014-03-03 14:46:01 +0100 | [diff] [blame] | 1512 | spin_lock_bh(&nf_conntrack_expect_lock); |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1513 | return -EOPNOTSUPP; |
| 1514 | } |
| 1515 | |
Jesper Dangaard Brouer | ca7433d | 2014-03-03 14:46:01 +0100 | [diff] [blame] | 1516 | spin_lock_bh(&nf_conntrack_expect_lock); |
Patrick McHardy | 794e687 | 2010-02-03 13:41:29 +0100 | [diff] [blame] | 1517 | helper = __nf_conntrack_helper_find(helpname, nf_ct_l3num(ct), |
| 1518 | nf_ct_protonum(ct)); |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1519 | if (helper) |
| 1520 | return -EAGAIN; |
| 1521 | #endif |
Pablo Neira Ayuso | 0adf9d6 | 2008-06-09 15:56:20 -0700 | [diff] [blame] | 1522 | return -EOPNOTSUPP; |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1523 | } |
Yasuyuki Kozakai | df293bb | 2007-05-10 14:15:58 -0700 | [diff] [blame] | 1524 | |
Yasuyuki Kozakai | ceceae1 | 2007-07-07 22:23:42 -0700 | [diff] [blame] | 1525 | if (help) { |
Pablo Neira Ayuso | ae243be | 2012-06-07 14:19:42 +0200 | [diff] [blame] | 1526 | if (help->helper == helper) { |
| 1527 | /* update private helper data if allowed. */ |
Pablo Neira Ayuso | 7be54ca | 2012-09-21 16:52:08 +0200 | [diff] [blame] | 1528 | if (helper->from_nlattr) |
Pablo Neira Ayuso | ae243be | 2012-06-07 14:19:42 +0200 | [diff] [blame] | 1529 | helper->from_nlattr(helpinfo, ct); |
Yasuyuki Kozakai | ceceae1 | 2007-07-07 22:23:42 -0700 | [diff] [blame] | 1530 | return 0; |
Pablo Neira Ayuso | fd7462d | 2012-06-18 17:29:53 +0200 | [diff] [blame] | 1531 | } else |
Yasuyuki Kozakai | ceceae1 | 2007-07-07 22:23:42 -0700 | [diff] [blame] | 1532 | return -EBUSY; |
Yasuyuki Kozakai | ceceae1 | 2007-07-07 22:23:42 -0700 | [diff] [blame] | 1533 | } |
Yasuyuki Kozakai | df293bb | 2007-05-10 14:15:58 -0700 | [diff] [blame] | 1534 | |
Pablo Neira Ayuso | fd7462d | 2012-06-18 17:29:53 +0200 | [diff] [blame] | 1535 | /* we cannot set a helper for an existing conntrack */ |
| 1536 | return -EOPNOTSUPP; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1537 | } |
| 1538 | |
Pablo Neira Ayuso | 4054ff4 | 2016-04-12 23:32:34 +0200 | [diff] [blame] | 1539 | static int ctnetlink_change_timeout(struct nf_conn *ct, |
| 1540 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1541 | { |
Patrick McHardy | 77236b6 | 2007-12-17 22:29:45 -0800 | [diff] [blame] | 1542 | u_int32_t timeout = ntohl(nla_get_be32(cda[CTA_TIMEOUT])); |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 1543 | |
Florian Westphal | f330a7f | 2016-08-25 15:33:31 +0200 | [diff] [blame] | 1544 | ct->timeout = nfct_time_stamp + timeout * HZ; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1545 | |
Florian Westphal | f330a7f | 2016-08-25 15:33:31 +0200 | [diff] [blame] | 1546 | if (test_bit(IPS_DYING_BIT, &ct->status)) |
| 1547 | return -ETIME; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1548 | |
| 1549 | return 0; |
| 1550 | } |
| 1551 | |
Patrick McHardy | d0b0268 | 2010-02-10 15:38:33 +0100 | [diff] [blame] | 1552 | static const struct nla_policy protoinfo_policy[CTA_PROTOINFO_MAX+1] = { |
| 1553 | [CTA_PROTOINFO_TCP] = { .type = NLA_NESTED }, |
| 1554 | [CTA_PROTOINFO_DCCP] = { .type = NLA_NESTED }, |
| 1555 | [CTA_PROTOINFO_SCTP] = { .type = NLA_NESTED }, |
| 1556 | }; |
| 1557 | |
Pablo Neira Ayuso | 4054ff4 | 2016-04-12 23:32:34 +0200 | [diff] [blame] | 1558 | static int ctnetlink_change_protoinfo(struct nf_conn *ct, |
| 1559 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1560 | { |
Patrick McHardy | 3993832 | 2009-08-25 16:07:58 +0200 | [diff] [blame] | 1561 | const struct nlattr *attr = cda[CTA_PROTOINFO]; |
| 1562 | struct nlattr *tb[CTA_PROTOINFO_MAX+1]; |
Martin Josefsson | 605dcad | 2006-11-29 02:35:06 +0100 | [diff] [blame] | 1563 | struct nf_conntrack_l4proto *l4proto; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1564 | int err = 0; |
| 1565 | |
Daniel Borkmann | 130ffbc | 2013-06-12 17:54:51 +0200 | [diff] [blame] | 1566 | err = nla_parse_nested(tb, CTA_PROTOINFO_MAX, attr, protoinfo_policy); |
| 1567 | if (err < 0) |
| 1568 | return err; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1569 | |
Florian Westphal | cd91566 | 2009-03-18 17:28:37 +0100 | [diff] [blame] | 1570 | rcu_read_lock(); |
| 1571 | l4proto = __nf_ct_l4proto_find(nf_ct_l3num(ct), nf_ct_protonum(ct)); |
Patrick McHardy | fdf7083 | 2007-09-28 14:37:41 -0700 | [diff] [blame] | 1572 | if (l4proto->from_nlattr) |
| 1573 | err = l4proto->from_nlattr(tb, ct); |
Florian Westphal | cd91566 | 2009-03-18 17:28:37 +0100 | [diff] [blame] | 1574 | rcu_read_unlock(); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1575 | |
| 1576 | return err; |
| 1577 | } |
| 1578 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1579 | static const struct nla_policy seqadj_policy[CTA_SEQADJ_MAX+1] = { |
| 1580 | [CTA_SEQADJ_CORRECTION_POS] = { .type = NLA_U32 }, |
| 1581 | [CTA_SEQADJ_OFFSET_BEFORE] = { .type = NLA_U32 }, |
| 1582 | [CTA_SEQADJ_OFFSET_AFTER] = { .type = NLA_U32 }, |
Patrick McHardy | d0b0268 | 2010-02-10 15:38:33 +0100 | [diff] [blame] | 1583 | }; |
| 1584 | |
Pablo Neira Ayuso | 4054ff4 | 2016-04-12 23:32:34 +0200 | [diff] [blame] | 1585 | static int change_seq_adj(struct nf_ct_seqadj *seq, |
| 1586 | const struct nlattr * const attr) |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1587 | { |
Daniel Borkmann | 130ffbc | 2013-06-12 17:54:51 +0200 | [diff] [blame] | 1588 | int err; |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1589 | struct nlattr *cda[CTA_SEQADJ_MAX+1]; |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1590 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1591 | err = nla_parse_nested(cda, CTA_SEQADJ_MAX, attr, seqadj_policy); |
Daniel Borkmann | 130ffbc | 2013-06-12 17:54:51 +0200 | [diff] [blame] | 1592 | if (err < 0) |
| 1593 | return err; |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1594 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1595 | if (!cda[CTA_SEQADJ_CORRECTION_POS]) |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1596 | return -EINVAL; |
| 1597 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1598 | seq->correction_pos = |
| 1599 | ntohl(nla_get_be32(cda[CTA_SEQADJ_CORRECTION_POS])); |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1600 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1601 | if (!cda[CTA_SEQADJ_OFFSET_BEFORE]) |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1602 | return -EINVAL; |
| 1603 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1604 | seq->offset_before = |
| 1605 | ntohl(nla_get_be32(cda[CTA_SEQADJ_OFFSET_BEFORE])); |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1606 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1607 | if (!cda[CTA_SEQADJ_OFFSET_AFTER]) |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1608 | return -EINVAL; |
| 1609 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1610 | seq->offset_after = |
| 1611 | ntohl(nla_get_be32(cda[CTA_SEQADJ_OFFSET_AFTER])); |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1612 | |
| 1613 | return 0; |
| 1614 | } |
| 1615 | |
| 1616 | static int |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1617 | ctnetlink_change_seq_adj(struct nf_conn *ct, |
| 1618 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1619 | { |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1620 | struct nf_conn_seqadj *seqadj = nfct_seqadj(ct); |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1621 | int ret = 0; |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1622 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1623 | if (!seqadj) |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1624 | return 0; |
| 1625 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1626 | if (cda[CTA_SEQ_ADJ_ORIG]) { |
| 1627 | ret = change_seq_adj(&seqadj->seq[IP_CT_DIR_ORIGINAL], |
| 1628 | cda[CTA_SEQ_ADJ_ORIG]); |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1629 | if (ret < 0) |
| 1630 | return ret; |
| 1631 | |
| 1632 | ct->status |= IPS_SEQ_ADJUST; |
| 1633 | } |
| 1634 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1635 | if (cda[CTA_SEQ_ADJ_REPLY]) { |
| 1636 | ret = change_seq_adj(&seqadj->seq[IP_CT_DIR_REPLY], |
| 1637 | cda[CTA_SEQ_ADJ_REPLY]); |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1638 | if (ret < 0) |
| 1639 | return ret; |
| 1640 | |
| 1641 | ct->status |= IPS_SEQ_ADJUST; |
| 1642 | } |
| 1643 | |
| 1644 | return 0; |
| 1645 | } |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1646 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1647 | static int |
Florian Westphal | 9b21f6a | 2013-01-11 06:30:46 +0000 | [diff] [blame] | 1648 | ctnetlink_attach_labels(struct nf_conn *ct, const struct nlattr * const cda[]) |
| 1649 | { |
| 1650 | #ifdef CONFIG_NF_CONNTRACK_LABELS |
| 1651 | size_t len = nla_len(cda[CTA_LABELS]); |
| 1652 | const void *mask = cda[CTA_LABELS_MASK]; |
| 1653 | |
| 1654 | if (len & (sizeof(u32)-1)) /* must be multiple of u32 */ |
| 1655 | return -EINVAL; |
| 1656 | |
| 1657 | if (mask) { |
| 1658 | if (nla_len(cda[CTA_LABELS_MASK]) == 0 || |
| 1659 | nla_len(cda[CTA_LABELS_MASK]) != len) |
| 1660 | return -EINVAL; |
| 1661 | mask = nla_data(cda[CTA_LABELS_MASK]); |
| 1662 | } |
| 1663 | |
| 1664 | len /= sizeof(u32); |
| 1665 | |
| 1666 | return nf_connlabels_replace(ct, nla_data(cda[CTA_LABELS]), mask, len); |
| 1667 | #else |
| 1668 | return -EOPNOTSUPP; |
| 1669 | #endif |
| 1670 | } |
| 1671 | |
| 1672 | static int |
Patrick McHardy | 3993832 | 2009-08-25 16:07:58 +0200 | [diff] [blame] | 1673 | ctnetlink_change_conntrack(struct nf_conn *ct, |
| 1674 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1675 | { |
| 1676 | int err; |
| 1677 | |
Pablo Neira Ayuso | e098360 | 2009-03-16 15:27:22 +0100 | [diff] [blame] | 1678 | /* only allow NAT changes and master assignation for new conntracks */ |
| 1679 | if (cda[CTA_NAT_SRC] || cda[CTA_NAT_DST] || cda[CTA_TUPLE_MASTER]) |
| 1680 | return -EOPNOTSUPP; |
| 1681 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1682 | if (cda[CTA_HELP]) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1683 | err = ctnetlink_change_helper(ct, cda); |
| 1684 | if (err < 0) |
| 1685 | return err; |
| 1686 | } |
| 1687 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1688 | if (cda[CTA_TIMEOUT]) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1689 | err = ctnetlink_change_timeout(ct, cda); |
| 1690 | if (err < 0) |
| 1691 | return err; |
| 1692 | } |
| 1693 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1694 | if (cda[CTA_STATUS]) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1695 | err = ctnetlink_change_status(ct, cda); |
| 1696 | if (err < 0) |
| 1697 | return err; |
| 1698 | } |
| 1699 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1700 | if (cda[CTA_PROTOINFO]) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1701 | err = ctnetlink_change_protoinfo(ct, cda); |
| 1702 | if (err < 0) |
| 1703 | return err; |
| 1704 | } |
| 1705 | |
Martin Josefsson | bcd1e83 | 2006-04-01 02:23:21 -0800 | [diff] [blame] | 1706 | #if defined(CONFIG_NF_CONNTRACK_MARK) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1707 | if (cda[CTA_MARK]) |
Patrick McHardy | 77236b6 | 2007-12-17 22:29:45 -0800 | [diff] [blame] | 1708 | ct->mark = ntohl(nla_get_be32(cda[CTA_MARK])); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1709 | #endif |
| 1710 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1711 | if (cda[CTA_SEQ_ADJ_ORIG] || cda[CTA_SEQ_ADJ_REPLY]) { |
| 1712 | err = ctnetlink_change_seq_adj(ct, cda); |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1713 | if (err < 0) |
| 1714 | return err; |
| 1715 | } |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1716 | |
Florian Westphal | 9b21f6a | 2013-01-11 06:30:46 +0000 | [diff] [blame] | 1717 | if (cda[CTA_LABELS]) { |
| 1718 | err = ctnetlink_attach_labels(ct, cda); |
| 1719 | if (err < 0) |
| 1720 | return err; |
| 1721 | } |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1722 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1723 | return 0; |
| 1724 | } |
| 1725 | |
Pablo Neira Ayuso | f0a3c08 | 2009-03-16 15:28:09 +0100 | [diff] [blame] | 1726 | static struct nf_conn * |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 1727 | ctnetlink_create_conntrack(struct net *net, |
| 1728 | const struct nf_conntrack_zone *zone, |
Alexey Dobriyan | 9592a5c | 2010-01-13 16:04:18 +0100 | [diff] [blame] | 1729 | const struct nlattr * const cda[], |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1730 | struct nf_conntrack_tuple *otuple, |
Pablo Neira Ayuso | 5faa1f4 | 2007-09-28 14:43:53 -0700 | [diff] [blame] | 1731 | struct nf_conntrack_tuple *rtuple, |
Pablo Neira Ayuso | 7ec4749 | 2009-03-16 15:25:46 +0100 | [diff] [blame] | 1732 | u8 u3) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1733 | { |
| 1734 | struct nf_conn *ct; |
| 1735 | int err = -EINVAL; |
Yasuyuki Kozakai | ceceae1 | 2007-07-07 22:23:42 -0700 | [diff] [blame] | 1736 | struct nf_conntrack_helper *helper; |
Pablo Neira Ayuso | 315c34d | 2011-04-21 10:55:07 +0200 | [diff] [blame] | 1737 | struct nf_conn_tstamp *tstamp; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1738 | |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 1739 | ct = nf_conntrack_alloc(net, zone, otuple, rtuple, GFP_ATOMIC); |
Julia Lawall | cd7fcbf | 2009-01-12 00:06:08 +0000 | [diff] [blame] | 1740 | if (IS_ERR(ct)) |
Pablo Neira Ayuso | f0a3c08 | 2009-03-16 15:28:09 +0100 | [diff] [blame] | 1741 | return ERR_PTR(-ENOMEM); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1742 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1743 | if (!cda[CTA_TIMEOUT]) |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1744 | goto err1; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1745 | |
Florian Westphal | f330a7f | 2016-08-25 15:33:31 +0200 | [diff] [blame] | 1746 | ct->timeout = nfct_time_stamp + ntohl(nla_get_be32(cda[CTA_TIMEOUT])) * HZ; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1747 | |
Patrick McHardy | 58a3c9b | 2008-01-31 04:36:54 -0800 | [diff] [blame] | 1748 | rcu_read_lock(); |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1749 | if (cda[CTA_HELP]) { |
Pablo Neira Ayuso | 29fe1b4 | 2009-04-22 02:26:37 -0700 | [diff] [blame] | 1750 | char *helpname = NULL; |
Pablo Neira Ayuso | ae243be | 2012-06-07 14:19:42 +0200 | [diff] [blame] | 1751 | struct nlattr *helpinfo = NULL; |
| 1752 | |
| 1753 | err = ctnetlink_parse_help(cda[CTA_HELP], &helpname, &helpinfo); |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1754 | if (err < 0) |
| 1755 | goto err2; |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1756 | |
Patrick McHardy | 794e687 | 2010-02-03 13:41:29 +0100 | [diff] [blame] | 1757 | helper = __nf_conntrack_helper_find(helpname, nf_ct_l3num(ct), |
| 1758 | nf_ct_protonum(ct)); |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1759 | if (helper == NULL) { |
| 1760 | rcu_read_unlock(); |
| 1761 | #ifdef CONFIG_MODULES |
| 1762 | if (request_module("nfct-helper-%s", helpname) < 0) { |
| 1763 | err = -EOPNOTSUPP; |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1764 | goto err1; |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1765 | } |
| 1766 | |
| 1767 | rcu_read_lock(); |
Patrick McHardy | 794e687 | 2010-02-03 13:41:29 +0100 | [diff] [blame] | 1768 | helper = __nf_conntrack_helper_find(helpname, |
| 1769 | nf_ct_l3num(ct), |
| 1770 | nf_ct_protonum(ct)); |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1771 | if (helper) { |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1772 | err = -EAGAIN; |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1773 | goto err2; |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1774 | } |
| 1775 | rcu_read_unlock(); |
| 1776 | #endif |
| 1777 | err = -EOPNOTSUPP; |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1778 | goto err1; |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1779 | } else { |
| 1780 | struct nf_conn_help *help; |
| 1781 | |
Pablo Neira Ayuso | 1afc567 | 2012-06-07 12:11:50 +0200 | [diff] [blame] | 1782 | help = nf_ct_helper_ext_add(ct, helper, GFP_ATOMIC); |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1783 | if (help == NULL) { |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1784 | err = -ENOMEM; |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1785 | goto err2; |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1786 | } |
Pablo Neira Ayuso | ae243be | 2012-06-07 14:19:42 +0200 | [diff] [blame] | 1787 | /* set private helper data if allowed. */ |
Pablo Neira Ayuso | 7be54ca | 2012-09-21 16:52:08 +0200 | [diff] [blame] | 1788 | if (helper->from_nlattr) |
Pablo Neira Ayuso | ae243be | 2012-06-07 14:19:42 +0200 | [diff] [blame] | 1789 | helper->from_nlattr(helpinfo, ct); |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1790 | |
| 1791 | /* not in hash table yet so not strictly necessary */ |
Stephen Hemminger | a9b3cd7 | 2011-08-01 16:19:00 +0000 | [diff] [blame] | 1792 | RCU_INIT_POINTER(help->helper, helper); |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1793 | } |
| 1794 | } else { |
| 1795 | /* try an implicit helper assignation */ |
Patrick McHardy | b2a15a6 | 2010-02-03 14:13:03 +0100 | [diff] [blame] | 1796 | err = __nf_ct_try_assign_helper(ct, NULL, GFP_ATOMIC); |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1797 | if (err < 0) |
| 1798 | goto err2; |
Patrick McHarrdy | 3c158f7 | 2007-06-05 12:55:27 -0700 | [diff] [blame] | 1799 | } |
Yasuyuki Kozakai | dafc741 | 2006-11-27 10:25:32 -0800 | [diff] [blame] | 1800 | |
Pablo Neira Ayuso | 0eba801 | 2014-02-16 12:15:43 +0100 | [diff] [blame] | 1801 | err = ctnetlink_setup_nat(ct, cda); |
| 1802 | if (err < 0) |
| 1803 | goto err2; |
Pablo Neira Ayuso | 1575e7e | 2008-08-18 21:30:55 -0700 | [diff] [blame] | 1804 | |
Pablo Neira Ayuso | a88e22a | 2010-02-19 14:24:39 +0100 | [diff] [blame] | 1805 | nf_ct_acct_ext_add(ct, GFP_ATOMIC); |
Pablo Neira Ayuso | a992ca2 | 2011-01-19 16:00:07 +0100 | [diff] [blame] | 1806 | nf_ct_tstamp_ext_add(ct, GFP_ATOMIC); |
Pablo Neira Ayuso | a88e22a | 2010-02-19 14:24:39 +0100 | [diff] [blame] | 1807 | nf_ct_ecache_ext_add(ct, 0, 0, GFP_ATOMIC); |
Florian Westphal | c539f01 | 2013-01-11 06:30:44 +0000 | [diff] [blame] | 1808 | nf_ct_labels_ext_add(ct); |
Eric Leblond | b89bd0c | 2017-05-11 18:56:38 +0200 | [diff] [blame] | 1809 | nfct_seqadj_ext_add(ct); |
| 1810 | nfct_synproxy_ext_add(ct); |
Florian Westphal | c539f01 | 2013-01-11 06:30:44 +0000 | [diff] [blame] | 1811 | |
Pablo Neira Ayuso | a88e22a | 2010-02-19 14:24:39 +0100 | [diff] [blame] | 1812 | /* we must add conntrack extensions before confirmation. */ |
| 1813 | ct->status |= IPS_CONFIRMED; |
| 1814 | |
| 1815 | if (cda[CTA_STATUS]) { |
| 1816 | err = ctnetlink_change_status(ct, cda); |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1817 | if (err < 0) |
| 1818 | goto err2; |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 1819 | } |
| 1820 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1821 | if (cda[CTA_SEQ_ADJ_ORIG] || cda[CTA_SEQ_ADJ_REPLY]) { |
| 1822 | err = ctnetlink_change_seq_adj(ct, cda); |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1823 | if (err < 0) |
| 1824 | goto err2; |
Pablo Neira Ayuso | c969aa7 | 2009-02-09 14:33:57 -0800 | [diff] [blame] | 1825 | } |
Pablo Neira Ayuso | c969aa7 | 2009-02-09 14:33:57 -0800 | [diff] [blame] | 1826 | |
Changli Gao | e5fc9e7 | 2010-11-12 17:33:17 +0100 | [diff] [blame] | 1827 | memset(&ct->proto, 0, sizeof(ct->proto)); |
Pablo Neira Ayuso | 1575e7e | 2008-08-18 21:30:55 -0700 | [diff] [blame] | 1828 | if (cda[CTA_PROTOINFO]) { |
| 1829 | err = ctnetlink_change_protoinfo(ct, cda); |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1830 | if (err < 0) |
| 1831 | goto err2; |
Pablo Neira Ayuso | 1575e7e | 2008-08-18 21:30:55 -0700 | [diff] [blame] | 1832 | } |
| 1833 | |
Pablo Neira Ayuso | 1575e7e | 2008-08-18 21:30:55 -0700 | [diff] [blame] | 1834 | #if defined(CONFIG_NF_CONNTRACK_MARK) |
| 1835 | if (cda[CTA_MARK]) |
| 1836 | ct->mark = ntohl(nla_get_be32(cda[CTA_MARK])); |
| 1837 | #endif |
| 1838 | |
Pablo Neira Ayuso | 5faa1f4 | 2007-09-28 14:43:53 -0700 | [diff] [blame] | 1839 | /* setup master conntrack: this is a confirmed expectation */ |
Pablo Neira Ayuso | 7ec4749 | 2009-03-16 15:25:46 +0100 | [diff] [blame] | 1840 | if (cda[CTA_TUPLE_MASTER]) { |
| 1841 | struct nf_conntrack_tuple master; |
| 1842 | struct nf_conntrack_tuple_hash *master_h; |
| 1843 | struct nf_conn *master_ct; |
| 1844 | |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 1845 | err = ctnetlink_parse_tuple(cda, &master, CTA_TUPLE_MASTER, |
| 1846 | u3, NULL); |
Pablo Neira Ayuso | 7ec4749 | 2009-03-16 15:25:46 +0100 | [diff] [blame] | 1847 | if (err < 0) |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1848 | goto err2; |
Pablo Neira Ayuso | 7ec4749 | 2009-03-16 15:25:46 +0100 | [diff] [blame] | 1849 | |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 1850 | master_h = nf_conntrack_find_get(net, zone, &master); |
Pablo Neira Ayuso | 7ec4749 | 2009-03-16 15:25:46 +0100 | [diff] [blame] | 1851 | if (master_h == NULL) { |
| 1852 | err = -ENOENT; |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1853 | goto err2; |
Pablo Neira Ayuso | 7ec4749 | 2009-03-16 15:25:46 +0100 | [diff] [blame] | 1854 | } |
| 1855 | master_ct = nf_ct_tuplehash_to_ctrack(master_h); |
Pablo Neira Ayuso | f2a8900 | 2007-12-12 10:34:29 -0800 | [diff] [blame] | 1856 | __set_bit(IPS_EXPECTED_BIT, &ct->status); |
Pablo Neira Ayuso | 5faa1f4 | 2007-09-28 14:43:53 -0700 | [diff] [blame] | 1857 | ct->master = master_ct; |
Pablo Neira Ayuso | f2a8900 | 2007-12-12 10:34:29 -0800 | [diff] [blame] | 1858 | } |
Pablo Neira Ayuso | 315c34d | 2011-04-21 10:55:07 +0200 | [diff] [blame] | 1859 | tstamp = nf_conn_tstamp_find(ct); |
| 1860 | if (tstamp) |
Eric Dumazet | d2de875 | 2014-08-22 18:32:09 -0700 | [diff] [blame] | 1861 | tstamp->start = ktime_get_real_ns(); |
Pablo Neira Ayuso | 5faa1f4 | 2007-09-28 14:43:53 -0700 | [diff] [blame] | 1862 | |
Jozsef Kadlecsik | 7d367e0 | 2012-02-24 11:45:49 +0100 | [diff] [blame] | 1863 | err = nf_conntrack_hash_check_insert(ct); |
| 1864 | if (err < 0) |
| 1865 | goto err2; |
| 1866 | |
Patrick McHardy | 58a3c9b | 2008-01-31 04:36:54 -0800 | [diff] [blame] | 1867 | rcu_read_unlock(); |
Yasuyuki Kozakai | dafc741 | 2006-11-27 10:25:32 -0800 | [diff] [blame] | 1868 | |
Pablo Neira Ayuso | f0a3c08 | 2009-03-16 15:28:09 +0100 | [diff] [blame] | 1869 | return ct; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1870 | |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1871 | err2: |
| 1872 | rcu_read_unlock(); |
| 1873 | err1: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1874 | nf_conntrack_free(ct); |
Pablo Neira Ayuso | f0a3c08 | 2009-03-16 15:28:09 +0100 | [diff] [blame] | 1875 | return ERR_PTR(err); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1876 | } |
| 1877 | |
Pablo Neira Ayuso | 7b8002a | 2015-12-15 18:41:56 +0100 | [diff] [blame] | 1878 | static int ctnetlink_new_conntrack(struct net *net, struct sock *ctnl, |
| 1879 | struct sk_buff *skb, |
| 1880 | const struct nlmsghdr *nlh, |
| 1881 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1882 | { |
| 1883 | struct nf_conntrack_tuple otuple, rtuple; |
| 1884 | struct nf_conntrack_tuple_hash *h = NULL; |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 1885 | struct nfgenmsg *nfmsg = nlmsg_data(nlh); |
Jozsef Kadlecsik | 7d367e0 | 2012-02-24 11:45:49 +0100 | [diff] [blame] | 1886 | struct nf_conn *ct; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1887 | u_int8_t u3 = nfmsg->nfgen_family; |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 1888 | struct nf_conntrack_zone zone; |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 1889 | int err; |
| 1890 | |
| 1891 | err = ctnetlink_parse_zone(cda[CTA_ZONE], &zone); |
| 1892 | if (err < 0) |
| 1893 | return err; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1894 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1895 | if (cda[CTA_TUPLE_ORIG]) { |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 1896 | err = ctnetlink_parse_tuple(cda, &otuple, CTA_TUPLE_ORIG, |
| 1897 | u3, &zone); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1898 | if (err < 0) |
| 1899 | return err; |
| 1900 | } |
| 1901 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1902 | if (cda[CTA_TUPLE_REPLY]) { |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 1903 | err = ctnetlink_parse_tuple(cda, &rtuple, CTA_TUPLE_REPLY, |
| 1904 | u3, &zone); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1905 | if (err < 0) |
| 1906 | return err; |
| 1907 | } |
| 1908 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1909 | if (cda[CTA_TUPLE_ORIG]) |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 1910 | h = nf_conntrack_find_get(net, &zone, &otuple); |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1911 | else if (cda[CTA_TUPLE_REPLY]) |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 1912 | h = nf_conntrack_find_get(net, &zone, &rtuple); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1913 | |
| 1914 | if (h == NULL) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1915 | err = -ENOENT; |
Pablo Neira Ayuso | f0a3c08 | 2009-03-16 15:28:09 +0100 | [diff] [blame] | 1916 | if (nlh->nlmsg_flags & NLM_F_CREATE) { |
Pablo Neira Ayuso | fecc113 | 2009-05-05 17:48:26 +0200 | [diff] [blame] | 1917 | enum ip_conntrack_events events; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1918 | |
Florian Westphal | 442fad9 | 2013-02-11 23:22:38 +0000 | [diff] [blame] | 1919 | if (!cda[CTA_TUPLE_ORIG] || !cda[CTA_TUPLE_REPLY]) |
| 1920 | return -EINVAL; |
Liping Zhang | aa0c2c6 | 2016-08-08 22:10:26 +0800 | [diff] [blame] | 1921 | if (otuple.dst.protonum != rtuple.dst.protonum) |
| 1922 | return -EINVAL; |
Florian Westphal | 442fad9 | 2013-02-11 23:22:38 +0000 | [diff] [blame] | 1923 | |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 1924 | ct = ctnetlink_create_conntrack(net, &zone, cda, &otuple, |
Pablo Neira Ayuso | f0a3c08 | 2009-03-16 15:28:09 +0100 | [diff] [blame] | 1925 | &rtuple, u3); |
Jozsef Kadlecsik | 7d367e0 | 2012-02-24 11:45:49 +0100 | [diff] [blame] | 1926 | if (IS_ERR(ct)) |
| 1927 | return PTR_ERR(ct); |
| 1928 | |
Pablo Neira Ayuso | f0a3c08 | 2009-03-16 15:28:09 +0100 | [diff] [blame] | 1929 | err = 0; |
Pablo Neira Ayuso | fecc113 | 2009-05-05 17:48:26 +0200 | [diff] [blame] | 1930 | if (test_bit(IPS_EXPECTED_BIT, &ct->status)) |
| 1931 | events = IPCT_RELATED; |
| 1932 | else |
| 1933 | events = IPCT_NEW; |
| 1934 | |
Florian Westphal | 9b21f6a | 2013-01-11 06:30:46 +0000 | [diff] [blame] | 1935 | if (cda[CTA_LABELS] && |
| 1936 | ctnetlink_attach_labels(ct, cda) == 0) |
| 1937 | events |= (1 << IPCT_LABEL); |
| 1938 | |
Patrick McHardy | 858b3133 | 2010-02-03 13:48:53 +0100 | [diff] [blame] | 1939 | nf_conntrack_eventmask_report((1 << IPCT_REPLY) | |
| 1940 | (1 << IPCT_ASSURED) | |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 1941 | (1 << IPCT_HELPER) | |
| 1942 | (1 << IPCT_PROTOINFO) | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1943 | (1 << IPCT_SEQADJ) | |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 1944 | (1 << IPCT_MARK) | events, |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 1945 | ct, NETLINK_CB(skb).portid, |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 1946 | nlmsg_report(nlh)); |
Pablo Neira Ayuso | f0a3c08 | 2009-03-16 15:28:09 +0100 | [diff] [blame] | 1947 | nf_ct_put(ct); |
Jozsef Kadlecsik | 7d367e0 | 2012-02-24 11:45:49 +0100 | [diff] [blame] | 1948 | } |
Pablo Neira Ayuso | 5faa1f4 | 2007-09-28 14:43:53 -0700 | [diff] [blame] | 1949 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1950 | return err; |
| 1951 | } |
| 1952 | /* implicit 'else' */ |
| 1953 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1954 | err = -EEXIST; |
Jozsef Kadlecsik | 7d367e0 | 2012-02-24 11:45:49 +0100 | [diff] [blame] | 1955 | ct = nf_ct_tuplehash_to_ctrack(h); |
Pablo Neira Ayuso | ff4ca82 | 2007-08-07 18:11:26 -0700 | [diff] [blame] | 1956 | if (!(nlh->nlmsg_flags & NLM_F_EXCL)) { |
Jesper Dangaard Brouer | ca7433d | 2014-03-03 14:46:01 +0100 | [diff] [blame] | 1957 | spin_lock_bh(&nf_conntrack_expect_lock); |
Pablo Neira Ayuso | 19abb7b | 2008-11-18 11:56:20 +0100 | [diff] [blame] | 1958 | err = ctnetlink_change_conntrack(ct, cda); |
Jesper Dangaard Brouer | ca7433d | 2014-03-03 14:46:01 +0100 | [diff] [blame] | 1959 | spin_unlock_bh(&nf_conntrack_expect_lock); |
Pablo Neira Ayuso | 19abb7b | 2008-11-18 11:56:20 +0100 | [diff] [blame] | 1960 | if (err == 0) { |
Patrick McHardy | 858b3133 | 2010-02-03 13:48:53 +0100 | [diff] [blame] | 1961 | nf_conntrack_eventmask_report((1 << IPCT_REPLY) | |
| 1962 | (1 << IPCT_ASSURED) | |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 1963 | (1 << IPCT_HELPER) | |
Florian Westphal | 797a7d6 | 2013-06-21 16:51:30 +0200 | [diff] [blame] | 1964 | (1 << IPCT_LABEL) | |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 1965 | (1 << IPCT_PROTOINFO) | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1966 | (1 << IPCT_SEQADJ) | |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 1967 | (1 << IPCT_MARK), |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 1968 | ct, NETLINK_CB(skb).portid, |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 1969 | nlmsg_report(nlh)); |
Jozsef Kadlecsik | 7d367e0 | 2012-02-24 11:45:49 +0100 | [diff] [blame] | 1970 | } |
Pablo Neira Ayuso | ff4ca82 | 2007-08-07 18:11:26 -0700 | [diff] [blame] | 1971 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1972 | |
Jozsef Kadlecsik | 7d367e0 | 2012-02-24 11:45:49 +0100 | [diff] [blame] | 1973 | nf_ct_put(ct); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1974 | return err; |
| 1975 | } |
| 1976 | |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 1977 | static int |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 1978 | ctnetlink_ct_stat_cpu_fill_info(struct sk_buff *skb, u32 portid, u32 seq, |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 1979 | __u16 cpu, const struct ip_conntrack_stat *st) |
| 1980 | { |
| 1981 | struct nlmsghdr *nlh; |
| 1982 | struct nfgenmsg *nfmsg; |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 1983 | unsigned int flags = portid ? NLM_F_MULTI : 0, event; |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 1984 | |
| 1985 | event = (NFNL_SUBSYS_CTNETLINK << 8 | IPCTNL_MSG_CT_GET_STATS_CPU); |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 1986 | nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags); |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 1987 | if (nlh == NULL) |
| 1988 | goto nlmsg_failure; |
| 1989 | |
| 1990 | nfmsg = nlmsg_data(nlh); |
| 1991 | nfmsg->nfgen_family = AF_UNSPEC; |
| 1992 | nfmsg->version = NFNETLINK_V0; |
| 1993 | nfmsg->res_id = htons(cpu); |
| 1994 | |
Florian Westphal | 8e8118f | 2016-09-11 22:55:53 +0200 | [diff] [blame] | 1995 | if (nla_put_be32(skb, CTA_STATS_FOUND, htonl(st->found)) || |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 1996 | nla_put_be32(skb, CTA_STATS_INVALID, htonl(st->invalid)) || |
| 1997 | nla_put_be32(skb, CTA_STATS_IGNORE, htonl(st->ignore)) || |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 1998 | nla_put_be32(skb, CTA_STATS_INSERT, htonl(st->insert)) || |
| 1999 | nla_put_be32(skb, CTA_STATS_INSERT_FAILED, |
| 2000 | htonl(st->insert_failed)) || |
| 2001 | nla_put_be32(skb, CTA_STATS_DROP, htonl(st->drop)) || |
| 2002 | nla_put_be32(skb, CTA_STATS_EARLY_DROP, htonl(st->early_drop)) || |
| 2003 | nla_put_be32(skb, CTA_STATS_ERROR, htonl(st->error)) || |
| 2004 | nla_put_be32(skb, CTA_STATS_SEARCH_RESTART, |
| 2005 | htonl(st->search_restart))) |
| 2006 | goto nla_put_failure; |
| 2007 | |
| 2008 | nlmsg_end(skb, nlh); |
| 2009 | return skb->len; |
| 2010 | |
| 2011 | nla_put_failure: |
| 2012 | nlmsg_failure: |
| 2013 | nlmsg_cancel(skb, nlh); |
| 2014 | return -1; |
| 2015 | } |
| 2016 | |
| 2017 | static int |
| 2018 | ctnetlink_ct_stat_cpu_dump(struct sk_buff *skb, struct netlink_callback *cb) |
| 2019 | { |
| 2020 | int cpu; |
| 2021 | struct net *net = sock_net(skb->sk); |
| 2022 | |
| 2023 | if (cb->args[0] == nr_cpu_ids) |
| 2024 | return 0; |
| 2025 | |
| 2026 | for (cpu = cb->args[0]; cpu < nr_cpu_ids; cpu++) { |
| 2027 | const struct ip_conntrack_stat *st; |
| 2028 | |
| 2029 | if (!cpu_possible(cpu)) |
| 2030 | continue; |
| 2031 | |
| 2032 | st = per_cpu_ptr(net->ct.stat, cpu); |
| 2033 | if (ctnetlink_ct_stat_cpu_fill_info(skb, |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2034 | NETLINK_CB(cb->skb).portid, |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 2035 | cb->nlh->nlmsg_seq, |
| 2036 | cpu, st) < 0) |
| 2037 | break; |
| 2038 | } |
| 2039 | cb->args[0] = cpu; |
| 2040 | |
| 2041 | return skb->len; |
| 2042 | } |
| 2043 | |
Pablo Neira Ayuso | 7b8002a | 2015-12-15 18:41:56 +0100 | [diff] [blame] | 2044 | static int ctnetlink_stat_ct_cpu(struct net *net, struct sock *ctnl, |
| 2045 | struct sk_buff *skb, |
| 2046 | const struct nlmsghdr *nlh, |
| 2047 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 2048 | { |
| 2049 | if (nlh->nlmsg_flags & NLM_F_DUMP) { |
| 2050 | struct netlink_dump_control c = { |
| 2051 | .dump = ctnetlink_ct_stat_cpu_dump, |
| 2052 | }; |
| 2053 | return netlink_dump_start(ctnl, skb, nlh, &c); |
| 2054 | } |
| 2055 | |
| 2056 | return 0; |
| 2057 | } |
| 2058 | |
| 2059 | static int |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2060 | ctnetlink_stat_ct_fill_info(struct sk_buff *skb, u32 portid, u32 seq, u32 type, |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 2061 | struct net *net) |
| 2062 | { |
| 2063 | struct nlmsghdr *nlh; |
| 2064 | struct nfgenmsg *nfmsg; |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2065 | unsigned int flags = portid ? NLM_F_MULTI : 0, event; |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 2066 | unsigned int nr_conntracks = atomic_read(&net->ct.count); |
| 2067 | |
| 2068 | event = (NFNL_SUBSYS_CTNETLINK << 8 | IPCTNL_MSG_CT_GET_STATS); |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2069 | nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags); |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 2070 | if (nlh == NULL) |
| 2071 | goto nlmsg_failure; |
| 2072 | |
| 2073 | nfmsg = nlmsg_data(nlh); |
| 2074 | nfmsg->nfgen_family = AF_UNSPEC; |
| 2075 | nfmsg->version = NFNETLINK_V0; |
| 2076 | nfmsg->res_id = 0; |
| 2077 | |
| 2078 | if (nla_put_be32(skb, CTA_STATS_GLOBAL_ENTRIES, htonl(nr_conntracks))) |
| 2079 | goto nla_put_failure; |
| 2080 | |
| 2081 | nlmsg_end(skb, nlh); |
| 2082 | return skb->len; |
| 2083 | |
| 2084 | nla_put_failure: |
| 2085 | nlmsg_failure: |
| 2086 | nlmsg_cancel(skb, nlh); |
| 2087 | return -1; |
| 2088 | } |
| 2089 | |
Pablo Neira Ayuso | 7b8002a | 2015-12-15 18:41:56 +0100 | [diff] [blame] | 2090 | static int ctnetlink_stat_ct(struct net *net, struct sock *ctnl, |
| 2091 | struct sk_buff *skb, const struct nlmsghdr *nlh, |
| 2092 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 2093 | { |
| 2094 | struct sk_buff *skb2; |
| 2095 | int err; |
| 2096 | |
| 2097 | skb2 = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| 2098 | if (skb2 == NULL) |
| 2099 | return -ENOMEM; |
| 2100 | |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2101 | err = ctnetlink_stat_ct_fill_info(skb2, NETLINK_CB(skb).portid, |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 2102 | nlh->nlmsg_seq, |
| 2103 | NFNL_MSG_TYPE(nlh->nlmsg_type), |
| 2104 | sock_net(skb->sk)); |
| 2105 | if (err <= 0) |
| 2106 | goto free; |
| 2107 | |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2108 | err = netlink_unicast(ctnl, skb2, NETLINK_CB(skb).portid, MSG_DONTWAIT); |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 2109 | if (err < 0) |
| 2110 | goto out; |
| 2111 | |
| 2112 | return 0; |
| 2113 | |
| 2114 | free: |
| 2115 | kfree_skb(skb2); |
| 2116 | out: |
| 2117 | /* this avoids a loop in nfnetlink. */ |
| 2118 | return err == -EAGAIN ? -ENOBUFS : err; |
| 2119 | } |
| 2120 | |
Pablo Neira Ayuso | bd07793 | 2013-08-07 18:13:20 +0200 | [diff] [blame] | 2121 | static const struct nla_policy exp_nla_policy[CTA_EXPECT_MAX+1] = { |
| 2122 | [CTA_EXPECT_MASTER] = { .type = NLA_NESTED }, |
| 2123 | [CTA_EXPECT_TUPLE] = { .type = NLA_NESTED }, |
| 2124 | [CTA_EXPECT_MASK] = { .type = NLA_NESTED }, |
| 2125 | [CTA_EXPECT_TIMEOUT] = { .type = NLA_U32 }, |
| 2126 | [CTA_EXPECT_ID] = { .type = NLA_U32 }, |
| 2127 | [CTA_EXPECT_HELP_NAME] = { .type = NLA_NUL_STRING, |
| 2128 | .len = NF_CT_HELPER_NAME_LEN - 1 }, |
| 2129 | [CTA_EXPECT_ZONE] = { .type = NLA_U16 }, |
| 2130 | [CTA_EXPECT_FLAGS] = { .type = NLA_U32 }, |
| 2131 | [CTA_EXPECT_CLASS] = { .type = NLA_U32 }, |
| 2132 | [CTA_EXPECT_NAT] = { .type = NLA_NESTED }, |
| 2133 | [CTA_EXPECT_FN] = { .type = NLA_NUL_STRING }, |
| 2134 | }; |
| 2135 | |
| 2136 | static struct nf_conntrack_expect * |
| 2137 | ctnetlink_alloc_expect(const struct nlattr *const cda[], struct nf_conn *ct, |
| 2138 | struct nf_conntrack_helper *helper, |
| 2139 | struct nf_conntrack_tuple *tuple, |
| 2140 | struct nf_conntrack_tuple *mask); |
| 2141 | |
Ken-ichirou MATSUZAWA | 83f3e94 | 2015-10-05 11:48:47 +0900 | [diff] [blame] | 2142 | #ifdef CONFIG_NETFILTER_NETLINK_GLUE_CT |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2143 | static size_t |
Ken-ichirou MATSUZAWA | a4b4766 | 2015-10-05 11:47:13 +0900 | [diff] [blame] | 2144 | ctnetlink_glue_build_size(const struct nf_conn *ct) |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2145 | { |
| 2146 | return 3 * nla_total_size(0) /* CTA_TUPLE_ORIG|REPL|MASTER */ |
| 2147 | + 3 * nla_total_size(0) /* CTA_TUPLE_IP */ |
| 2148 | + 3 * nla_total_size(0) /* CTA_TUPLE_PROTO */ |
| 2149 | + 3 * nla_total_size(sizeof(u_int8_t)) /* CTA_PROTO_NUM */ |
| 2150 | + nla_total_size(sizeof(u_int32_t)) /* CTA_ID */ |
| 2151 | + nla_total_size(sizeof(u_int32_t)) /* CTA_STATUS */ |
| 2152 | + nla_total_size(sizeof(u_int32_t)) /* CTA_TIMEOUT */ |
| 2153 | + nla_total_size(0) /* CTA_PROTOINFO */ |
| 2154 | + nla_total_size(0) /* CTA_HELP */ |
| 2155 | + nla_total_size(NF_CT_HELPER_NAME_LEN) /* CTA_HELP_NAME */ |
| 2156 | + ctnetlink_secctx_size(ct) |
| 2157 | #ifdef CONFIG_NF_NAT_NEEDED |
| 2158 | + 2 * nla_total_size(0) /* CTA_NAT_SEQ_ADJ_ORIG|REPL */ |
| 2159 | + 6 * nla_total_size(sizeof(u_int32_t)) /* CTA_NAT_SEQ_OFFSET */ |
| 2160 | #endif |
| 2161 | #ifdef CONFIG_NF_CONNTRACK_MARK |
| 2162 | + nla_total_size(sizeof(u_int32_t)) /* CTA_MARK */ |
| 2163 | #endif |
Ken-ichirou MATSUZAWA | 4a00106 | 2014-06-16 13:52:34 +0200 | [diff] [blame] | 2164 | #ifdef CONFIG_NF_CONNTRACK_ZONES |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 2165 | + nla_total_size(sizeof(u_int16_t)) /* CTA_ZONE|CTA_TUPLE_ZONE */ |
Ken-ichirou MATSUZAWA | 4a00106 | 2014-06-16 13:52:34 +0200 | [diff] [blame] | 2166 | #endif |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2167 | + ctnetlink_proto_size(ct) |
| 2168 | ; |
| 2169 | } |
| 2170 | |
Ken-ichirou MATSUZAWA | 224a059 | 2015-10-05 11:49:56 +0900 | [diff] [blame] | 2171 | static struct nf_conn *ctnetlink_glue_get_ct(const struct sk_buff *skb, |
Ken-ichirou MATSUZAWA | a4b4766 | 2015-10-05 11:47:13 +0900 | [diff] [blame] | 2172 | enum ip_conntrack_info *ctinfo) |
Pablo Neira Ayuso | b7bd180 | 2015-09-30 22:53:44 +0100 | [diff] [blame] | 2173 | { |
| 2174 | struct nf_conn *ct; |
| 2175 | |
| 2176 | ct = nf_ct_get(skb, ctinfo); |
| 2177 | if (ct && nf_ct_is_untracked(ct)) |
| 2178 | ct = NULL; |
| 2179 | |
| 2180 | return ct; |
| 2181 | } |
| 2182 | |
Ken-ichirou MATSUZAWA | a4b4766 | 2015-10-05 11:47:13 +0900 | [diff] [blame] | 2183 | static int __ctnetlink_glue_build(struct sk_buff *skb, struct nf_conn *ct) |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2184 | { |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 2185 | const struct nf_conntrack_zone *zone; |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2186 | struct nlattr *nest_parms; |
| 2187 | |
| 2188 | rcu_read_lock(); |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 2189 | zone = nf_ct_zone(ct); |
| 2190 | |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2191 | nest_parms = nla_nest_start(skb, CTA_TUPLE_ORIG | NLA_F_NESTED); |
| 2192 | if (!nest_parms) |
| 2193 | goto nla_put_failure; |
| 2194 | if (ctnetlink_dump_tuples(skb, nf_ct_tuple(ct, IP_CT_DIR_ORIGINAL)) < 0) |
| 2195 | goto nla_put_failure; |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 2196 | if (ctnetlink_dump_zone_id(skb, CTA_TUPLE_ZONE, zone, |
| 2197 | NF_CT_ZONE_DIR_ORIG) < 0) |
| 2198 | goto nla_put_failure; |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2199 | nla_nest_end(skb, nest_parms); |
| 2200 | |
| 2201 | nest_parms = nla_nest_start(skb, CTA_TUPLE_REPLY | NLA_F_NESTED); |
| 2202 | if (!nest_parms) |
| 2203 | goto nla_put_failure; |
| 2204 | if (ctnetlink_dump_tuples(skb, nf_ct_tuple(ct, IP_CT_DIR_REPLY)) < 0) |
| 2205 | goto nla_put_failure; |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 2206 | if (ctnetlink_dump_zone_id(skb, CTA_TUPLE_ZONE, zone, |
| 2207 | NF_CT_ZONE_DIR_REPL) < 0) |
| 2208 | goto nla_put_failure; |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2209 | nla_nest_end(skb, nest_parms); |
| 2210 | |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 2211 | if (ctnetlink_dump_zone_id(skb, CTA_ZONE, zone, |
| 2212 | NF_CT_DEFAULT_ZONE_DIR) < 0) |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 2213 | goto nla_put_failure; |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2214 | |
| 2215 | if (ctnetlink_dump_id(skb, ct) < 0) |
| 2216 | goto nla_put_failure; |
| 2217 | |
| 2218 | if (ctnetlink_dump_status(skb, ct) < 0) |
| 2219 | goto nla_put_failure; |
| 2220 | |
| 2221 | if (ctnetlink_dump_timeout(skb, ct) < 0) |
| 2222 | goto nla_put_failure; |
| 2223 | |
| 2224 | if (ctnetlink_dump_protoinfo(skb, ct) < 0) |
| 2225 | goto nla_put_failure; |
| 2226 | |
| 2227 | if (ctnetlink_dump_helpinfo(skb, ct) < 0) |
| 2228 | goto nla_put_failure; |
| 2229 | |
| 2230 | #ifdef CONFIG_NF_CONNTRACK_SECMARK |
| 2231 | if (ct->secmark && ctnetlink_dump_secctx(skb, ct) < 0) |
| 2232 | goto nla_put_failure; |
| 2233 | #endif |
| 2234 | if (ct->master && ctnetlink_dump_master(skb, ct) < 0) |
| 2235 | goto nla_put_failure; |
| 2236 | |
| 2237 | if ((ct->status & IPS_SEQ_ADJUST) && |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 2238 | ctnetlink_dump_ct_seq_adj(skb, ct) < 0) |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2239 | goto nla_put_failure; |
| 2240 | |
| 2241 | #ifdef CONFIG_NF_CONNTRACK_MARK |
| 2242 | if (ct->mark && ctnetlink_dump_mark(skb, ct) < 0) |
| 2243 | goto nla_put_failure; |
| 2244 | #endif |
Florian Westphal | 0ceabd8 | 2013-01-11 06:30:45 +0000 | [diff] [blame] | 2245 | if (ctnetlink_dump_labels(skb, ct) < 0) |
| 2246 | goto nla_put_failure; |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2247 | rcu_read_unlock(); |
| 2248 | return 0; |
| 2249 | |
| 2250 | nla_put_failure: |
| 2251 | rcu_read_unlock(); |
| 2252 | return -ENOSPC; |
| 2253 | } |
| 2254 | |
| 2255 | static int |
Ken-ichirou MATSUZAWA | a4b4766 | 2015-10-05 11:47:13 +0900 | [diff] [blame] | 2256 | ctnetlink_glue_build(struct sk_buff *skb, struct nf_conn *ct, |
| 2257 | enum ip_conntrack_info ctinfo, |
| 2258 | u_int16_t ct_attr, u_int16_t ct_info_attr) |
Pablo Neira Ayuso | b7bd180 | 2015-09-30 22:53:44 +0100 | [diff] [blame] | 2259 | { |
| 2260 | struct nlattr *nest_parms; |
| 2261 | |
| 2262 | nest_parms = nla_nest_start(skb, ct_attr | NLA_F_NESTED); |
| 2263 | if (!nest_parms) |
| 2264 | goto nla_put_failure; |
| 2265 | |
Ken-ichirou MATSUZAWA | a4b4766 | 2015-10-05 11:47:13 +0900 | [diff] [blame] | 2266 | if (__ctnetlink_glue_build(skb, ct) < 0) |
Pablo Neira Ayuso | b7bd180 | 2015-09-30 22:53:44 +0100 | [diff] [blame] | 2267 | goto nla_put_failure; |
| 2268 | |
| 2269 | nla_nest_end(skb, nest_parms); |
| 2270 | |
| 2271 | if (nla_put_be32(skb, ct_info_attr, htonl(ctinfo))) |
| 2272 | goto nla_put_failure; |
| 2273 | |
| 2274 | return 0; |
| 2275 | |
| 2276 | nla_put_failure: |
| 2277 | return -ENOSPC; |
| 2278 | } |
| 2279 | |
| 2280 | static int |
Ken-ichirou MATSUZAWA | a4b4766 | 2015-10-05 11:47:13 +0900 | [diff] [blame] | 2281 | ctnetlink_glue_parse_ct(const struct nlattr *cda[], struct nf_conn *ct) |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2282 | { |
| 2283 | int err; |
| 2284 | |
| 2285 | if (cda[CTA_TIMEOUT]) { |
| 2286 | err = ctnetlink_change_timeout(ct, cda); |
| 2287 | if (err < 0) |
| 2288 | return err; |
| 2289 | } |
| 2290 | if (cda[CTA_STATUS]) { |
| 2291 | err = ctnetlink_change_status(ct, cda); |
| 2292 | if (err < 0) |
| 2293 | return err; |
| 2294 | } |
| 2295 | if (cda[CTA_HELP]) { |
| 2296 | err = ctnetlink_change_helper(ct, cda); |
| 2297 | if (err < 0) |
| 2298 | return err; |
| 2299 | } |
Florian Westphal | 9b21f6a | 2013-01-11 06:30:46 +0000 | [diff] [blame] | 2300 | if (cda[CTA_LABELS]) { |
| 2301 | err = ctnetlink_attach_labels(ct, cda); |
| 2302 | if (err < 0) |
| 2303 | return err; |
| 2304 | } |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2305 | #if defined(CONFIG_NF_CONNTRACK_MARK) |
Florian Westphal | 534473c | 2013-12-19 18:25:15 +0100 | [diff] [blame] | 2306 | if (cda[CTA_MARK]) { |
| 2307 | u32 mask = 0, mark, newmark; |
| 2308 | if (cda[CTA_MARK_MASK]) |
| 2309 | mask = ~ntohl(nla_get_be32(cda[CTA_MARK_MASK])); |
| 2310 | |
| 2311 | mark = ntohl(nla_get_be32(cda[CTA_MARK])); |
| 2312 | newmark = (ct->mark & mask) ^ mark; |
| 2313 | if (newmark != ct->mark) |
| 2314 | ct->mark = newmark; |
| 2315 | } |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2316 | #endif |
| 2317 | return 0; |
| 2318 | } |
| 2319 | |
| 2320 | static int |
Ken-ichirou MATSUZAWA | a4b4766 | 2015-10-05 11:47:13 +0900 | [diff] [blame] | 2321 | ctnetlink_glue_parse(const struct nlattr *attr, struct nf_conn *ct) |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2322 | { |
| 2323 | struct nlattr *cda[CTA_MAX+1]; |
Pablo Neira Ayuso | 68e035c | 2012-08-14 12:47:37 +0200 | [diff] [blame] | 2324 | int ret; |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2325 | |
Daniel Borkmann | 130ffbc | 2013-06-12 17:54:51 +0200 | [diff] [blame] | 2326 | ret = nla_parse_nested(cda, CTA_MAX, attr, ct_nla_policy); |
| 2327 | if (ret < 0) |
| 2328 | return ret; |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2329 | |
Jesper Dangaard Brouer | ca7433d | 2014-03-03 14:46:01 +0100 | [diff] [blame] | 2330 | spin_lock_bh(&nf_conntrack_expect_lock); |
Ken-ichirou MATSUZAWA | a4b4766 | 2015-10-05 11:47:13 +0900 | [diff] [blame] | 2331 | ret = ctnetlink_glue_parse_ct((const struct nlattr **)cda, ct); |
Jesper Dangaard Brouer | ca7433d | 2014-03-03 14:46:01 +0100 | [diff] [blame] | 2332 | spin_unlock_bh(&nf_conntrack_expect_lock); |
Pablo Neira Ayuso | 68e035c | 2012-08-14 12:47:37 +0200 | [diff] [blame] | 2333 | |
| 2334 | return ret; |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2335 | } |
| 2336 | |
Ken-ichirou MATSUZAWA | a4b4766 | 2015-10-05 11:47:13 +0900 | [diff] [blame] | 2337 | static int ctnetlink_glue_exp_parse(const struct nlattr * const *cda, |
| 2338 | const struct nf_conn *ct, |
| 2339 | struct nf_conntrack_tuple *tuple, |
| 2340 | struct nf_conntrack_tuple *mask) |
Pablo Neira Ayuso | bd07793 | 2013-08-07 18:13:20 +0200 | [diff] [blame] | 2341 | { |
| 2342 | int err; |
| 2343 | |
| 2344 | err = ctnetlink_parse_tuple(cda, tuple, CTA_EXPECT_TUPLE, |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 2345 | nf_ct_l3num(ct), NULL); |
Pablo Neira Ayuso | bd07793 | 2013-08-07 18:13:20 +0200 | [diff] [blame] | 2346 | if (err < 0) |
| 2347 | return err; |
| 2348 | |
| 2349 | return ctnetlink_parse_tuple(cda, mask, CTA_EXPECT_MASK, |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 2350 | nf_ct_l3num(ct), NULL); |
Pablo Neira Ayuso | bd07793 | 2013-08-07 18:13:20 +0200 | [diff] [blame] | 2351 | } |
| 2352 | |
| 2353 | static int |
Ken-ichirou MATSUZAWA | a4b4766 | 2015-10-05 11:47:13 +0900 | [diff] [blame] | 2354 | ctnetlink_glue_attach_expect(const struct nlattr *attr, struct nf_conn *ct, |
| 2355 | u32 portid, u32 report) |
Pablo Neira Ayuso | bd07793 | 2013-08-07 18:13:20 +0200 | [diff] [blame] | 2356 | { |
| 2357 | struct nlattr *cda[CTA_EXPECT_MAX+1]; |
| 2358 | struct nf_conntrack_tuple tuple, mask; |
Florian Westphal | b7e092c | 2013-08-27 11:47:26 +0200 | [diff] [blame] | 2359 | struct nf_conntrack_helper *helper = NULL; |
Pablo Neira Ayuso | bd07793 | 2013-08-07 18:13:20 +0200 | [diff] [blame] | 2360 | struct nf_conntrack_expect *exp; |
| 2361 | int err; |
| 2362 | |
| 2363 | err = nla_parse_nested(cda, CTA_EXPECT_MAX, attr, exp_nla_policy); |
| 2364 | if (err < 0) |
| 2365 | return err; |
| 2366 | |
Ken-ichirou MATSUZAWA | a4b4766 | 2015-10-05 11:47:13 +0900 | [diff] [blame] | 2367 | err = ctnetlink_glue_exp_parse((const struct nlattr * const *)cda, |
| 2368 | ct, &tuple, &mask); |
Pablo Neira Ayuso | bd07793 | 2013-08-07 18:13:20 +0200 | [diff] [blame] | 2369 | if (err < 0) |
| 2370 | return err; |
| 2371 | |
| 2372 | if (cda[CTA_EXPECT_HELP_NAME]) { |
| 2373 | const char *helpname = nla_data(cda[CTA_EXPECT_HELP_NAME]); |
| 2374 | |
| 2375 | helper = __nf_conntrack_helper_find(helpname, nf_ct_l3num(ct), |
| 2376 | nf_ct_protonum(ct)); |
| 2377 | if (helper == NULL) |
| 2378 | return -EOPNOTSUPP; |
| 2379 | } |
| 2380 | |
| 2381 | exp = ctnetlink_alloc_expect((const struct nlattr * const *)cda, ct, |
| 2382 | helper, &tuple, &mask); |
| 2383 | if (IS_ERR(exp)) |
| 2384 | return PTR_ERR(exp); |
| 2385 | |
| 2386 | err = nf_ct_expect_related_report(exp, portid, report); |
Liping Zhang | b18bcb0 | 2016-08-08 22:03:40 +0800 | [diff] [blame] | 2387 | nf_ct_expect_put(exp); |
| 2388 | return err; |
Pablo Neira Ayuso | bd07793 | 2013-08-07 18:13:20 +0200 | [diff] [blame] | 2389 | } |
| 2390 | |
Ken-ichirou MATSUZAWA | a4b4766 | 2015-10-05 11:47:13 +0900 | [diff] [blame] | 2391 | static void ctnetlink_glue_seqadj(struct sk_buff *skb, struct nf_conn *ct, |
| 2392 | enum ip_conntrack_info ctinfo, int diff) |
Pablo Neira Ayuso | b7bd180 | 2015-09-30 22:53:44 +0100 | [diff] [blame] | 2393 | { |
| 2394 | if (!(ct->status & IPS_NAT_MASK)) |
| 2395 | return; |
| 2396 | |
| 2397 | nf_ct_tcp_seqadj_set(skb, ct, ctinfo, diff); |
| 2398 | } |
| 2399 | |
Ken-ichirou MATSUZAWA | a4b4766 | 2015-10-05 11:47:13 +0900 | [diff] [blame] | 2400 | static struct nfnl_ct_hook ctnetlink_glue_hook = { |
| 2401 | .get_ct = ctnetlink_glue_get_ct, |
| 2402 | .build_size = ctnetlink_glue_build_size, |
| 2403 | .build = ctnetlink_glue_build, |
| 2404 | .parse = ctnetlink_glue_parse, |
| 2405 | .attach_expect = ctnetlink_glue_attach_expect, |
| 2406 | .seq_adjust = ctnetlink_glue_seqadj, |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2407 | }; |
Ken-ichirou MATSUZAWA | 83f3e94 | 2015-10-05 11:48:47 +0900 | [diff] [blame] | 2408 | #endif /* CONFIG_NETFILTER_NETLINK_GLUE_CT */ |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2409 | |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 2410 | /*********************************************************************** |
| 2411 | * EXPECT |
| 2412 | ***********************************************************************/ |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2413 | |
Pablo Neira Ayuso | 4054ff4 | 2016-04-12 23:32:34 +0200 | [diff] [blame] | 2414 | static int ctnetlink_exp_dump_tuple(struct sk_buff *skb, |
| 2415 | const struct nf_conntrack_tuple *tuple, |
| 2416 | enum ctattr_expect type) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2417 | { |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2418 | struct nlattr *nest_parms; |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 2419 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2420 | nest_parms = nla_nest_start(skb, type | NLA_F_NESTED); |
| 2421 | if (!nest_parms) |
| 2422 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2423 | if (ctnetlink_dump_tuples(skb, tuple) < 0) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2424 | goto nla_put_failure; |
| 2425 | nla_nest_end(skb, nest_parms); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2426 | |
| 2427 | return 0; |
| 2428 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2429 | nla_put_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2430 | return -1; |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 2431 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2432 | |
Pablo Neira Ayuso | 4054ff4 | 2016-04-12 23:32:34 +0200 | [diff] [blame] | 2433 | static int ctnetlink_exp_dump_mask(struct sk_buff *skb, |
| 2434 | const struct nf_conntrack_tuple *tuple, |
| 2435 | const struct nf_conntrack_tuple_mask *mask) |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 2436 | { |
| 2437 | int ret; |
| 2438 | struct nf_conntrack_l3proto *l3proto; |
Martin Josefsson | 605dcad | 2006-11-29 02:35:06 +0100 | [diff] [blame] | 2439 | struct nf_conntrack_l4proto *l4proto; |
Patrick McHardy | d4156e8 | 2007-07-07 22:31:32 -0700 | [diff] [blame] | 2440 | struct nf_conntrack_tuple m; |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2441 | struct nlattr *nest_parms; |
Patrick McHardy | d4156e8 | 2007-07-07 22:31:32 -0700 | [diff] [blame] | 2442 | |
| 2443 | memset(&m, 0xFF, sizeof(m)); |
Patrick McHardy | d4156e8 | 2007-07-07 22:31:32 -0700 | [diff] [blame] | 2444 | memcpy(&m.src.u3, &mask->src.u3, sizeof(m.src.u3)); |
Patrick McHardy | e578756 | 2010-01-26 17:04:02 +0100 | [diff] [blame] | 2445 | m.src.u.all = mask->src.u.all; |
| 2446 | m.dst.protonum = tuple->dst.protonum; |
Patrick McHardy | d4156e8 | 2007-07-07 22:31:32 -0700 | [diff] [blame] | 2447 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2448 | nest_parms = nla_nest_start(skb, CTA_EXPECT_MASK | NLA_F_NESTED); |
| 2449 | if (!nest_parms) |
| 2450 | goto nla_put_failure; |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 2451 | |
Hans Schillstrom | 3b988ec | 2012-03-05 02:24:29 +0000 | [diff] [blame] | 2452 | rcu_read_lock(); |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 2453 | l3proto = __nf_ct_l3proto_find(tuple->src.l3num); |
Patrick McHardy | d4156e8 | 2007-07-07 22:31:32 -0700 | [diff] [blame] | 2454 | ret = ctnetlink_dump_tuples_ip(skb, &m, l3proto); |
Hans Schillstrom | 3b988ec | 2012-03-05 02:24:29 +0000 | [diff] [blame] | 2455 | if (ret >= 0) { |
| 2456 | l4proto = __nf_ct_l4proto_find(tuple->src.l3num, |
| 2457 | tuple->dst.protonum); |
Patrick McHardy | d4156e8 | 2007-07-07 22:31:32 -0700 | [diff] [blame] | 2458 | ret = ctnetlink_dump_tuples_proto(skb, &m, l4proto); |
Hans Schillstrom | 3b988ec | 2012-03-05 02:24:29 +0000 | [diff] [blame] | 2459 | } |
| 2460 | rcu_read_unlock(); |
| 2461 | |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 2462 | if (unlikely(ret < 0)) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2463 | goto nla_put_failure; |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 2464 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2465 | nla_nest_end(skb, nest_parms); |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 2466 | |
| 2467 | return 0; |
| 2468 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2469 | nla_put_failure: |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 2470 | return -1; |
| 2471 | } |
| 2472 | |
Patrick McHardy | c7232c9 | 2012-08-26 19:14:06 +0200 | [diff] [blame] | 2473 | static const union nf_inet_addr any_addr; |
| 2474 | |
Ilpo Järvinen | bb5cf80 | 2008-01-05 23:11:31 -0800 | [diff] [blame] | 2475 | static int |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2476 | ctnetlink_exp_dump_expect(struct sk_buff *skb, |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 2477 | const struct nf_conntrack_expect *exp) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2478 | { |
| 2479 | struct nf_conn *master = exp->master; |
Xi Wang | c121638 | 2011-12-30 10:40:17 -0500 | [diff] [blame] | 2480 | long timeout = ((long)exp->timeout.expires - (long)jiffies) / HZ; |
Pablo Neira Ayuso | bc01befd | 2010-09-28 21:06:34 +0200 | [diff] [blame] | 2481 | struct nf_conn_help *help; |
Pablo Neira Ayuso | 076a0ca | 2012-02-05 03:41:52 +0100 | [diff] [blame] | 2482 | #ifdef CONFIG_NF_NAT_NEEDED |
| 2483 | struct nlattr *nest_parms; |
| 2484 | struct nf_conntrack_tuple nat_tuple = {}; |
| 2485 | #endif |
Pablo Neira Ayuso | 544d5c7 | 2012-02-05 03:44:51 +0100 | [diff] [blame] | 2486 | struct nf_ct_helper_expectfn *expfn; |
| 2487 | |
Patrick McHardy | d978e5d | 2007-12-17 22:37:03 -0800 | [diff] [blame] | 2488 | if (timeout < 0) |
| 2489 | timeout = 0; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2490 | |
| 2491 | if (ctnetlink_exp_dump_tuple(skb, &exp->tuple, CTA_EXPECT_TUPLE) < 0) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2492 | goto nla_put_failure; |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 2493 | if (ctnetlink_exp_dump_mask(skb, &exp->tuple, &exp->mask) < 0) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2494 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2495 | if (ctnetlink_exp_dump_tuple(skb, |
| 2496 | &master->tuplehash[IP_CT_DIR_ORIGINAL].tuple, |
| 2497 | CTA_EXPECT_MASTER) < 0) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2498 | goto nla_put_failure; |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 2499 | |
Pablo Neira Ayuso | 076a0ca | 2012-02-05 03:41:52 +0100 | [diff] [blame] | 2500 | #ifdef CONFIG_NF_NAT_NEEDED |
Patrick McHardy | c7232c9 | 2012-08-26 19:14:06 +0200 | [diff] [blame] | 2501 | if (!nf_inet_addr_cmp(&exp->saved_addr, &any_addr) || |
| 2502 | exp->saved_proto.all) { |
Pablo Neira Ayuso | 076a0ca | 2012-02-05 03:41:52 +0100 | [diff] [blame] | 2503 | nest_parms = nla_nest_start(skb, CTA_EXPECT_NAT | NLA_F_NESTED); |
| 2504 | if (!nest_parms) |
| 2505 | goto nla_put_failure; |
| 2506 | |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 2507 | if (nla_put_be32(skb, CTA_EXPECT_NAT_DIR, htonl(exp->dir))) |
| 2508 | goto nla_put_failure; |
Pablo Neira Ayuso | 076a0ca | 2012-02-05 03:41:52 +0100 | [diff] [blame] | 2509 | |
| 2510 | nat_tuple.src.l3num = nf_ct_l3num(master); |
Patrick McHardy | c7232c9 | 2012-08-26 19:14:06 +0200 | [diff] [blame] | 2511 | nat_tuple.src.u3 = exp->saved_addr; |
Pablo Neira Ayuso | 076a0ca | 2012-02-05 03:41:52 +0100 | [diff] [blame] | 2512 | nat_tuple.dst.protonum = nf_ct_protonum(master); |
| 2513 | nat_tuple.src.u = exp->saved_proto; |
| 2514 | |
| 2515 | if (ctnetlink_exp_dump_tuple(skb, &nat_tuple, |
| 2516 | CTA_EXPECT_NAT_TUPLE) < 0) |
| 2517 | goto nla_put_failure; |
| 2518 | nla_nest_end(skb, nest_parms); |
| 2519 | } |
| 2520 | #endif |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 2521 | if (nla_put_be32(skb, CTA_EXPECT_TIMEOUT, htonl(timeout)) || |
| 2522 | nla_put_be32(skb, CTA_EXPECT_ID, htonl((unsigned long)exp)) || |
| 2523 | nla_put_be32(skb, CTA_EXPECT_FLAGS, htonl(exp->flags)) || |
| 2524 | nla_put_be32(skb, CTA_EXPECT_CLASS, htonl(exp->class))) |
| 2525 | goto nla_put_failure; |
Pablo Neira Ayuso | bc01befd | 2010-09-28 21:06:34 +0200 | [diff] [blame] | 2526 | help = nfct_help(master); |
| 2527 | if (help) { |
| 2528 | struct nf_conntrack_helper *helper; |
| 2529 | |
| 2530 | helper = rcu_dereference(help->helper); |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 2531 | if (helper && |
| 2532 | nla_put_string(skb, CTA_EXPECT_HELP_NAME, helper->name)) |
| 2533 | goto nla_put_failure; |
Pablo Neira Ayuso | bc01befd | 2010-09-28 21:06:34 +0200 | [diff] [blame] | 2534 | } |
Pablo Neira Ayuso | 544d5c7 | 2012-02-05 03:44:51 +0100 | [diff] [blame] | 2535 | expfn = nf_ct_helper_expectfn_find_by_symbol(exp->expectfn); |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 2536 | if (expfn != NULL && |
| 2537 | nla_put_string(skb, CTA_EXPECT_FN, expfn->name)) |
| 2538 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2539 | |
| 2540 | return 0; |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 2541 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2542 | nla_put_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2543 | return -1; |
| 2544 | } |
| 2545 | |
| 2546 | static int |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2547 | ctnetlink_exp_fill_info(struct sk_buff *skb, u32 portid, u32 seq, |
Pablo Neira Ayuso | 8b0a231 | 2009-06-02 20:03:34 +0200 | [diff] [blame] | 2548 | int event, const struct nf_conntrack_expect *exp) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2549 | { |
| 2550 | struct nlmsghdr *nlh; |
| 2551 | struct nfgenmsg *nfmsg; |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2552 | unsigned int flags = portid ? NLM_F_MULTI : 0; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2553 | |
| 2554 | event |= NFNL_SUBSYS_CTNETLINK_EXP << 8; |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2555 | nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags); |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2556 | if (nlh == NULL) |
| 2557 | goto nlmsg_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2558 | |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2559 | nfmsg = nlmsg_data(nlh); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2560 | nfmsg->nfgen_family = exp->tuple.src.l3num; |
| 2561 | nfmsg->version = NFNETLINK_V0; |
| 2562 | nfmsg->res_id = 0; |
| 2563 | |
| 2564 | if (ctnetlink_exp_dump_expect(skb, exp) < 0) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2565 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2566 | |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2567 | nlmsg_end(skb, nlh); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2568 | return skb->len; |
| 2569 | |
| 2570 | nlmsg_failure: |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2571 | nla_put_failure: |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2572 | nlmsg_cancel(skb, nlh); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2573 | return -1; |
| 2574 | } |
| 2575 | |
| 2576 | #ifdef CONFIG_NF_CONNTRACK_EVENTS |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 2577 | static int |
| 2578 | ctnetlink_expect_event(unsigned int events, struct nf_exp_event *item) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2579 | { |
Alexey Dobriyan | 9592a5c | 2010-01-13 16:04:18 +0100 | [diff] [blame] | 2580 | struct nf_conntrack_expect *exp = item->exp; |
| 2581 | struct net *net = nf_ct_exp_net(exp); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2582 | struct nlmsghdr *nlh; |
| 2583 | struct nfgenmsg *nfmsg; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2584 | struct sk_buff *skb; |
Pablo Neira Ayuso | ebbf41d | 2010-10-19 10:19:06 +0200 | [diff] [blame] | 2585 | unsigned int type, group; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2586 | int flags = 0; |
| 2587 | |
Pablo Neira Ayuso | ebbf41d | 2010-10-19 10:19:06 +0200 | [diff] [blame] | 2588 | if (events & (1 << IPEXP_DESTROY)) { |
| 2589 | type = IPCTNL_MSG_EXP_DELETE; |
| 2590 | group = NFNLGRP_CONNTRACK_EXP_DESTROY; |
| 2591 | } else if (events & (1 << IPEXP_NEW)) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2592 | type = IPCTNL_MSG_EXP_NEW; |
| 2593 | flags = NLM_F_CREATE|NLM_F_EXCL; |
Pablo Neira Ayuso | ebbf41d | 2010-10-19 10:19:06 +0200 | [diff] [blame] | 2594 | group = NFNLGRP_CONNTRACK_EXP_NEW; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2595 | } else |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 2596 | return 0; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2597 | |
Pablo Neira Ayuso | ebbf41d | 2010-10-19 10:19:06 +0200 | [diff] [blame] | 2598 | if (!item->report && !nfnetlink_has_listeners(net, group)) |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 2599 | return 0; |
Pablo Neira Ayuso | b3a27bf | 2006-08-22 00:32:05 -0700 | [diff] [blame] | 2600 | |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2601 | skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); |
| 2602 | if (skb == NULL) |
Pablo Neira Ayuso | 150ace0 | 2009-04-17 17:47:31 +0200 | [diff] [blame] | 2603 | goto errout; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2604 | |
Marcus Sundberg | b633ad5 | 2006-02-04 02:11:09 -0800 | [diff] [blame] | 2605 | type |= NFNL_SUBSYS_CTNETLINK_EXP << 8; |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2606 | nlh = nlmsg_put(skb, item->portid, 0, type, sizeof(*nfmsg), flags); |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2607 | if (nlh == NULL) |
| 2608 | goto nlmsg_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2609 | |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2610 | nfmsg = nlmsg_data(nlh); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2611 | nfmsg->nfgen_family = exp->tuple.src.l3num; |
| 2612 | nfmsg->version = NFNETLINK_V0; |
| 2613 | nfmsg->res_id = 0; |
| 2614 | |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 2615 | rcu_read_lock(); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2616 | if (ctnetlink_exp_dump_expect(skb, exp) < 0) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2617 | goto nla_put_failure; |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 2618 | rcu_read_unlock(); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2619 | |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2620 | nlmsg_end(skb, nlh); |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2621 | nfnetlink_send(skb, net, item->portid, group, item->report, GFP_ATOMIC); |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 2622 | return 0; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2623 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2624 | nla_put_failure: |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 2625 | rcu_read_unlock(); |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2626 | nlmsg_cancel(skb, nlh); |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 2627 | nlmsg_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2628 | kfree_skb(skb); |
Pablo Neira Ayuso | 150ace0 | 2009-04-17 17:47:31 +0200 | [diff] [blame] | 2629 | errout: |
Alexey Dobriyan | 9592a5c | 2010-01-13 16:04:18 +0100 | [diff] [blame] | 2630 | nfnetlink_set_err(net, 0, 0, -ENOBUFS); |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 2631 | return 0; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2632 | } |
| 2633 | #endif |
Patrick McHardy | cf6994c | 2007-07-07 22:32:34 -0700 | [diff] [blame] | 2634 | static int ctnetlink_exp_done(struct netlink_callback *cb) |
| 2635 | { |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2636 | if (cb->args[1]) |
| 2637 | nf_ct_expect_put((struct nf_conntrack_expect *)cb->args[1]); |
Patrick McHardy | cf6994c | 2007-07-07 22:32:34 -0700 | [diff] [blame] | 2638 | return 0; |
| 2639 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2640 | |
| 2641 | static int |
| 2642 | ctnetlink_exp_dump_table(struct sk_buff *skb, struct netlink_callback *cb) |
| 2643 | { |
Alexey Dobriyan | 9592a5c | 2010-01-13 16:04:18 +0100 | [diff] [blame] | 2644 | struct net *net = sock_net(skb->sk); |
Patrick McHardy | cf6994c | 2007-07-07 22:32:34 -0700 | [diff] [blame] | 2645 | struct nf_conntrack_expect *exp, *last; |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2646 | struct nfgenmsg *nfmsg = nlmsg_data(cb->nlh); |
Pablo Neira Ayuso | 87711cb | 2006-01-05 12:19:23 -0800 | [diff] [blame] | 2647 | u_int8_t l3proto = nfmsg->nfgen_family; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2648 | |
Patrick McHardy | 7d0742d | 2008-01-31 04:38:19 -0800 | [diff] [blame] | 2649 | rcu_read_lock(); |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2650 | last = (struct nf_conntrack_expect *)cb->args[1]; |
| 2651 | for (; cb->args[0] < nf_ct_expect_hsize; cb->args[0]++) { |
Patrick McHardy | cf6994c | 2007-07-07 22:32:34 -0700 | [diff] [blame] | 2652 | restart: |
Florian Westphal | 0a93aae | 2016-05-06 00:51:49 +0200 | [diff] [blame] | 2653 | hlist_for_each_entry(exp, &nf_ct_expect_hash[cb->args[0]], |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2654 | hnode) { |
| 2655 | if (l3proto && exp->tuple.src.l3num != l3proto) |
Patrick McHardy | cf6994c | 2007-07-07 22:32:34 -0700 | [diff] [blame] | 2656 | continue; |
Florian Westphal | 03d7dc5 | 2016-05-06 00:51:47 +0200 | [diff] [blame] | 2657 | |
| 2658 | if (!net_eq(nf_ct_net(exp->master), net)) |
| 2659 | continue; |
| 2660 | |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2661 | if (cb->args[1]) { |
| 2662 | if (exp != last) |
| 2663 | continue; |
| 2664 | cb->args[1] = 0; |
| 2665 | } |
Pablo Neira Ayuso | 8b0a231 | 2009-06-02 20:03:34 +0200 | [diff] [blame] | 2666 | if (ctnetlink_exp_fill_info(skb, |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2667 | NETLINK_CB(cb->skb).portid, |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2668 | cb->nlh->nlmsg_seq, |
| 2669 | IPCTNL_MSG_EXP_NEW, |
Pablo Neira Ayuso | 8b0a231 | 2009-06-02 20:03:34 +0200 | [diff] [blame] | 2670 | exp) < 0) { |
Patrick McHardy | 7d0742d | 2008-01-31 04:38:19 -0800 | [diff] [blame] | 2671 | if (!atomic_inc_not_zero(&exp->use)) |
| 2672 | continue; |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2673 | cb->args[1] = (unsigned long)exp; |
| 2674 | goto out; |
| 2675 | } |
Patrick McHardy | cf6994c | 2007-07-07 22:32:34 -0700 | [diff] [blame] | 2676 | } |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2677 | if (cb->args[1]) { |
| 2678 | cb->args[1] = 0; |
| 2679 | goto restart; |
Patrick McHardy | cf6994c | 2007-07-07 22:32:34 -0700 | [diff] [blame] | 2680 | } |
| 2681 | } |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 2682 | out: |
Patrick McHardy | 7d0742d | 2008-01-31 04:38:19 -0800 | [diff] [blame] | 2683 | rcu_read_unlock(); |
Patrick McHardy | cf6994c | 2007-07-07 22:32:34 -0700 | [diff] [blame] | 2684 | if (last) |
| 2685 | nf_ct_expect_put(last); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2686 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2687 | return skb->len; |
| 2688 | } |
| 2689 | |
Pablo Neira Ayuso | e844a92 | 2013-03-17 23:21:36 +0000 | [diff] [blame] | 2690 | static int |
| 2691 | ctnetlink_exp_ct_dump_table(struct sk_buff *skb, struct netlink_callback *cb) |
| 2692 | { |
| 2693 | struct nf_conntrack_expect *exp, *last; |
| 2694 | struct nfgenmsg *nfmsg = nlmsg_data(cb->nlh); |
| 2695 | struct nf_conn *ct = cb->data; |
| 2696 | struct nf_conn_help *help = nfct_help(ct); |
| 2697 | u_int8_t l3proto = nfmsg->nfgen_family; |
| 2698 | |
| 2699 | if (cb->args[0]) |
| 2700 | return 0; |
| 2701 | |
| 2702 | rcu_read_lock(); |
| 2703 | last = (struct nf_conntrack_expect *)cb->args[1]; |
| 2704 | restart: |
| 2705 | hlist_for_each_entry(exp, &help->expectations, lnode) { |
| 2706 | if (l3proto && exp->tuple.src.l3num != l3proto) |
| 2707 | continue; |
| 2708 | if (cb->args[1]) { |
| 2709 | if (exp != last) |
| 2710 | continue; |
| 2711 | cb->args[1] = 0; |
| 2712 | } |
| 2713 | if (ctnetlink_exp_fill_info(skb, NETLINK_CB(cb->skb).portid, |
| 2714 | cb->nlh->nlmsg_seq, |
| 2715 | IPCTNL_MSG_EXP_NEW, |
| 2716 | exp) < 0) { |
| 2717 | if (!atomic_inc_not_zero(&exp->use)) |
| 2718 | continue; |
| 2719 | cb->args[1] = (unsigned long)exp; |
| 2720 | goto out; |
| 2721 | } |
| 2722 | } |
| 2723 | if (cb->args[1]) { |
| 2724 | cb->args[1] = 0; |
| 2725 | goto restart; |
| 2726 | } |
| 2727 | cb->args[0] = 1; |
| 2728 | out: |
| 2729 | rcu_read_unlock(); |
| 2730 | if (last) |
| 2731 | nf_ct_expect_put(last); |
| 2732 | |
| 2733 | return skb->len; |
| 2734 | } |
| 2735 | |
Pablo Neira Ayuso | 7b8002a | 2015-12-15 18:41:56 +0100 | [diff] [blame] | 2736 | static int ctnetlink_dump_exp_ct(struct net *net, struct sock *ctnl, |
| 2737 | struct sk_buff *skb, |
Pablo Neira Ayuso | e844a92 | 2013-03-17 23:21:36 +0000 | [diff] [blame] | 2738 | const struct nlmsghdr *nlh, |
| 2739 | const struct nlattr * const cda[]) |
| 2740 | { |
| 2741 | int err; |
Pablo Neira Ayuso | e844a92 | 2013-03-17 23:21:36 +0000 | [diff] [blame] | 2742 | struct nfgenmsg *nfmsg = nlmsg_data(nlh); |
| 2743 | u_int8_t u3 = nfmsg->nfgen_family; |
| 2744 | struct nf_conntrack_tuple tuple; |
| 2745 | struct nf_conntrack_tuple_hash *h; |
| 2746 | struct nf_conn *ct; |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 2747 | struct nf_conntrack_zone zone; |
Pablo Neira Ayuso | e844a92 | 2013-03-17 23:21:36 +0000 | [diff] [blame] | 2748 | struct netlink_dump_control c = { |
| 2749 | .dump = ctnetlink_exp_ct_dump_table, |
| 2750 | .done = ctnetlink_exp_done, |
| 2751 | }; |
| 2752 | |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 2753 | err = ctnetlink_parse_tuple(cda, &tuple, CTA_EXPECT_MASTER, |
| 2754 | u3, NULL); |
Pablo Neira Ayuso | e844a92 | 2013-03-17 23:21:36 +0000 | [diff] [blame] | 2755 | if (err < 0) |
| 2756 | return err; |
| 2757 | |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 2758 | err = ctnetlink_parse_zone(cda[CTA_EXPECT_ZONE], &zone); |
| 2759 | if (err < 0) |
| 2760 | return err; |
Pablo Neira Ayuso | e844a92 | 2013-03-17 23:21:36 +0000 | [diff] [blame] | 2761 | |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 2762 | h = nf_conntrack_find_get(net, &zone, &tuple); |
Pablo Neira Ayuso | e844a92 | 2013-03-17 23:21:36 +0000 | [diff] [blame] | 2763 | if (!h) |
| 2764 | return -ENOENT; |
| 2765 | |
| 2766 | ct = nf_ct_tuplehash_to_ctrack(h); |
| 2767 | c.data = ct; |
| 2768 | |
| 2769 | err = netlink_dump_start(ctnl, skb, nlh, &c); |
| 2770 | nf_ct_put(ct); |
| 2771 | |
| 2772 | return err; |
| 2773 | } |
| 2774 | |
Pablo Neira Ayuso | 7b8002a | 2015-12-15 18:41:56 +0100 | [diff] [blame] | 2775 | static int ctnetlink_get_expect(struct net *net, struct sock *ctnl, |
| 2776 | struct sk_buff *skb, const struct nlmsghdr *nlh, |
| 2777 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2778 | { |
| 2779 | struct nf_conntrack_tuple tuple; |
| 2780 | struct nf_conntrack_expect *exp; |
| 2781 | struct sk_buff *skb2; |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2782 | struct nfgenmsg *nfmsg = nlmsg_data(nlh); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2783 | u_int8_t u3 = nfmsg->nfgen_family; |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 2784 | struct nf_conntrack_zone zone; |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 2785 | int err; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2786 | |
David S. Miller | b8f3ab4 | 2011-01-18 12:40:38 -0800 | [diff] [blame] | 2787 | if (nlh->nlmsg_flags & NLM_F_DUMP) { |
Pablo Neira Ayuso | e844a92 | 2013-03-17 23:21:36 +0000 | [diff] [blame] | 2788 | if (cda[CTA_EXPECT_MASTER]) |
Pablo Neira Ayuso | 7b8002a | 2015-12-15 18:41:56 +0100 | [diff] [blame] | 2789 | return ctnetlink_dump_exp_ct(net, ctnl, skb, nlh, cda); |
Pablo Neira Ayuso | e844a92 | 2013-03-17 23:21:36 +0000 | [diff] [blame] | 2790 | else { |
| 2791 | struct netlink_dump_control c = { |
| 2792 | .dump = ctnetlink_exp_dump_table, |
| 2793 | .done = ctnetlink_exp_done, |
| 2794 | }; |
| 2795 | return netlink_dump_start(ctnl, skb, nlh, &c); |
| 2796 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2797 | } |
| 2798 | |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 2799 | err = ctnetlink_parse_zone(cda[CTA_EXPECT_ZONE], &zone); |
| 2800 | if (err < 0) |
| 2801 | return err; |
| 2802 | |
Pablo Neira Ayuso | 35dba1d | 2011-12-14 12:45:22 +0100 | [diff] [blame] | 2803 | if (cda[CTA_EXPECT_TUPLE]) |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 2804 | err = ctnetlink_parse_tuple(cda, &tuple, CTA_EXPECT_TUPLE, |
| 2805 | u3, NULL); |
Pablo Neira Ayuso | 35dba1d | 2011-12-14 12:45:22 +0100 | [diff] [blame] | 2806 | else if (cda[CTA_EXPECT_MASTER]) |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 2807 | err = ctnetlink_parse_tuple(cda, &tuple, CTA_EXPECT_MASTER, |
| 2808 | u3, NULL); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2809 | else |
| 2810 | return -EINVAL; |
| 2811 | |
| 2812 | if (err < 0) |
| 2813 | return err; |
| 2814 | |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 2815 | exp = nf_ct_expect_find_get(net, &zone, &tuple); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2816 | if (!exp) |
| 2817 | return -ENOENT; |
| 2818 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2819 | if (cda[CTA_EXPECT_ID]) { |
Patrick McHardy | 77236b6 | 2007-12-17 22:29:45 -0800 | [diff] [blame] | 2820 | __be32 id = nla_get_be32(cda[CTA_EXPECT_ID]); |
Patrick McHardy | 3583240 | 2007-09-28 14:41:50 -0700 | [diff] [blame] | 2821 | if (ntohl(id) != (u32)(unsigned long)exp) { |
Patrick McHardy | 6823645 | 2007-07-07 22:30:49 -0700 | [diff] [blame] | 2822 | nf_ct_expect_put(exp); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2823 | return -ENOENT; |
| 2824 | } |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 2825 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2826 | |
| 2827 | err = -ENOMEM; |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2828 | skb2 = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
Pablo Neira Ayuso | 81378f7 | 2011-12-24 19:03:46 +0100 | [diff] [blame] | 2829 | if (skb2 == NULL) { |
| 2830 | nf_ct_expect_put(exp); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2831 | goto out; |
Pablo Neira Ayuso | 81378f7 | 2011-12-24 19:03:46 +0100 | [diff] [blame] | 2832 | } |
Thomas Graf | 4e9b826 | 2006-11-27 09:25:58 -0800 | [diff] [blame] | 2833 | |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 2834 | rcu_read_lock(); |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2835 | err = ctnetlink_exp_fill_info(skb2, NETLINK_CB(skb).portid, |
Pablo Neira Ayuso | 8b0a231 | 2009-06-02 20:03:34 +0200 | [diff] [blame] | 2836 | nlh->nlmsg_seq, IPCTNL_MSG_EXP_NEW, exp); |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 2837 | rcu_read_unlock(); |
Pablo Neira Ayuso | 81378f7 | 2011-12-24 19:03:46 +0100 | [diff] [blame] | 2838 | nf_ct_expect_put(exp); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2839 | if (err <= 0) |
| 2840 | goto free; |
| 2841 | |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2842 | err = netlink_unicast(ctnl, skb2, NETLINK_CB(skb).portid, MSG_DONTWAIT); |
Pablo Neira Ayuso | 81378f7 | 2011-12-24 19:03:46 +0100 | [diff] [blame] | 2843 | if (err < 0) |
| 2844 | goto out; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2845 | |
Pablo Neira Ayuso | 81378f7 | 2011-12-24 19:03:46 +0100 | [diff] [blame] | 2846 | return 0; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2847 | |
| 2848 | free: |
| 2849 | kfree_skb(skb2); |
| 2850 | out: |
Pablo Neira Ayuso | 81378f7 | 2011-12-24 19:03:46 +0100 | [diff] [blame] | 2851 | /* this avoids a loop in nfnetlink. */ |
| 2852 | return err == -EAGAIN ? -ENOBUFS : err; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2853 | } |
| 2854 | |
Pablo Neira Ayuso | 7b8002a | 2015-12-15 18:41:56 +0100 | [diff] [blame] | 2855 | static int ctnetlink_del_expect(struct net *net, struct sock *ctnl, |
| 2856 | struct sk_buff *skb, const struct nlmsghdr *nlh, |
| 2857 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2858 | { |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2859 | struct nf_conntrack_expect *exp; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2860 | struct nf_conntrack_tuple tuple; |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2861 | struct nfgenmsg *nfmsg = nlmsg_data(nlh); |
Sasha Levin | b67bfe0 | 2013-02-27 17:06:00 -0800 | [diff] [blame] | 2862 | struct hlist_node *next; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2863 | u_int8_t u3 = nfmsg->nfgen_family; |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 2864 | struct nf_conntrack_zone zone; |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2865 | unsigned int i; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2866 | int err; |
| 2867 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2868 | if (cda[CTA_EXPECT_TUPLE]) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2869 | /* delete a single expect by tuple */ |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 2870 | err = ctnetlink_parse_zone(cda[CTA_EXPECT_ZONE], &zone); |
| 2871 | if (err < 0) |
| 2872 | return err; |
| 2873 | |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 2874 | err = ctnetlink_parse_tuple(cda, &tuple, CTA_EXPECT_TUPLE, |
| 2875 | u3, NULL); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2876 | if (err < 0) |
| 2877 | return err; |
| 2878 | |
| 2879 | /* bump usage count to 2 */ |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 2880 | exp = nf_ct_expect_find_get(net, &zone, &tuple); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2881 | if (!exp) |
| 2882 | return -ENOENT; |
| 2883 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2884 | if (cda[CTA_EXPECT_ID]) { |
Patrick McHardy | 77236b6 | 2007-12-17 22:29:45 -0800 | [diff] [blame] | 2885 | __be32 id = nla_get_be32(cda[CTA_EXPECT_ID]); |
Patrick McHardy | 3583240 | 2007-09-28 14:41:50 -0700 | [diff] [blame] | 2886 | if (ntohl(id) != (u32)(unsigned long)exp) { |
Patrick McHardy | 6823645 | 2007-07-07 22:30:49 -0700 | [diff] [blame] | 2887 | nf_ct_expect_put(exp); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2888 | return -ENOENT; |
| 2889 | } |
| 2890 | } |
| 2891 | |
| 2892 | /* after list removal, usage count == 1 */ |
Jesper Dangaard Brouer | ca7433d | 2014-03-03 14:46:01 +0100 | [diff] [blame] | 2893 | spin_lock_bh(&nf_conntrack_expect_lock); |
Pablo Neira Ayuso | ebbf41d | 2010-10-19 10:19:06 +0200 | [diff] [blame] | 2894 | if (del_timer(&exp->timeout)) { |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2895 | nf_ct_unlink_expect_report(exp, NETLINK_CB(skb).portid, |
Pablo Neira Ayuso | ebbf41d | 2010-10-19 10:19:06 +0200 | [diff] [blame] | 2896 | nlmsg_report(nlh)); |
| 2897 | nf_ct_expect_put(exp); |
| 2898 | } |
Jesper Dangaard Brouer | ca7433d | 2014-03-03 14:46:01 +0100 | [diff] [blame] | 2899 | spin_unlock_bh(&nf_conntrack_expect_lock); |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 2900 | /* have to put what we 'get' above. |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2901 | * after this line usage count == 0 */ |
Patrick McHardy | 6823645 | 2007-07-07 22:30:49 -0700 | [diff] [blame] | 2902 | nf_ct_expect_put(exp); |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2903 | } else if (cda[CTA_EXPECT_HELP_NAME]) { |
| 2904 | char *name = nla_data(cda[CTA_EXPECT_HELP_NAME]); |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2905 | struct nf_conn_help *m_help; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2906 | |
| 2907 | /* delete all expectations for this helper */ |
Jesper Dangaard Brouer | ca7433d | 2014-03-03 14:46:01 +0100 | [diff] [blame] | 2908 | spin_lock_bh(&nf_conntrack_expect_lock); |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2909 | for (i = 0; i < nf_ct_expect_hsize; i++) { |
Sasha Levin | b67bfe0 | 2013-02-27 17:06:00 -0800 | [diff] [blame] | 2910 | hlist_for_each_entry_safe(exp, next, |
Florian Westphal | 0a93aae | 2016-05-06 00:51:49 +0200 | [diff] [blame] | 2911 | &nf_ct_expect_hash[i], |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2912 | hnode) { |
Florian Westphal | 03d7dc5 | 2016-05-06 00:51:47 +0200 | [diff] [blame] | 2913 | |
| 2914 | if (!net_eq(nf_ct_exp_net(exp), net)) |
| 2915 | continue; |
| 2916 | |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2917 | m_help = nfct_help(exp->master); |
Patrick McHardy | 794e687 | 2010-02-03 13:41:29 +0100 | [diff] [blame] | 2918 | if (!strcmp(m_help->helper->name, name) && |
| 2919 | del_timer(&exp->timeout)) { |
Pablo Neira Ayuso | ebbf41d | 2010-10-19 10:19:06 +0200 | [diff] [blame] | 2920 | nf_ct_unlink_expect_report(exp, |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2921 | NETLINK_CB(skb).portid, |
Pablo Neira Ayuso | ebbf41d | 2010-10-19 10:19:06 +0200 | [diff] [blame] | 2922 | nlmsg_report(nlh)); |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2923 | nf_ct_expect_put(exp); |
| 2924 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2925 | } |
| 2926 | } |
Jesper Dangaard Brouer | ca7433d | 2014-03-03 14:46:01 +0100 | [diff] [blame] | 2927 | spin_unlock_bh(&nf_conntrack_expect_lock); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2928 | } else { |
| 2929 | /* This basically means we have to flush everything*/ |
Jesper Dangaard Brouer | ca7433d | 2014-03-03 14:46:01 +0100 | [diff] [blame] | 2930 | spin_lock_bh(&nf_conntrack_expect_lock); |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2931 | for (i = 0; i < nf_ct_expect_hsize; i++) { |
Sasha Levin | b67bfe0 | 2013-02-27 17:06:00 -0800 | [diff] [blame] | 2932 | hlist_for_each_entry_safe(exp, next, |
Florian Westphal | 0a93aae | 2016-05-06 00:51:49 +0200 | [diff] [blame] | 2933 | &nf_ct_expect_hash[i], |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2934 | hnode) { |
Florian Westphal | 03d7dc5 | 2016-05-06 00:51:47 +0200 | [diff] [blame] | 2935 | |
| 2936 | if (!net_eq(nf_ct_exp_net(exp), net)) |
| 2937 | continue; |
| 2938 | |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2939 | if (del_timer(&exp->timeout)) { |
Pablo Neira Ayuso | ebbf41d | 2010-10-19 10:19:06 +0200 | [diff] [blame] | 2940 | nf_ct_unlink_expect_report(exp, |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2941 | NETLINK_CB(skb).portid, |
Pablo Neira Ayuso | ebbf41d | 2010-10-19 10:19:06 +0200 | [diff] [blame] | 2942 | nlmsg_report(nlh)); |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2943 | nf_ct_expect_put(exp); |
| 2944 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2945 | } |
| 2946 | } |
Jesper Dangaard Brouer | ca7433d | 2014-03-03 14:46:01 +0100 | [diff] [blame] | 2947 | spin_unlock_bh(&nf_conntrack_expect_lock); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2948 | } |
| 2949 | |
| 2950 | return 0; |
| 2951 | } |
| 2952 | static int |
Patrick McHardy | 3993832 | 2009-08-25 16:07:58 +0200 | [diff] [blame] | 2953 | ctnetlink_change_expect(struct nf_conntrack_expect *x, |
| 2954 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2955 | { |
Kelvie Wong | 9768e1a | 2012-05-02 14:39:24 +0000 | [diff] [blame] | 2956 | if (cda[CTA_EXPECT_TIMEOUT]) { |
| 2957 | if (!del_timer(&x->timeout)) |
| 2958 | return -ETIME; |
| 2959 | |
| 2960 | x->timeout.expires = jiffies + |
| 2961 | ntohl(nla_get_be32(cda[CTA_EXPECT_TIMEOUT])) * HZ; |
| 2962 | add_timer(&x->timeout); |
| 2963 | } |
| 2964 | return 0; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2965 | } |
| 2966 | |
Pablo Neira Ayuso | 076a0ca | 2012-02-05 03:41:52 +0100 | [diff] [blame] | 2967 | static const struct nla_policy exp_nat_nla_policy[CTA_EXPECT_NAT_MAX+1] = { |
| 2968 | [CTA_EXPECT_NAT_DIR] = { .type = NLA_U32 }, |
| 2969 | [CTA_EXPECT_NAT_TUPLE] = { .type = NLA_NESTED }, |
| 2970 | }; |
| 2971 | |
| 2972 | static int |
| 2973 | ctnetlink_parse_expect_nat(const struct nlattr *attr, |
| 2974 | struct nf_conntrack_expect *exp, |
| 2975 | u_int8_t u3) |
| 2976 | { |
| 2977 | #ifdef CONFIG_NF_NAT_NEEDED |
| 2978 | struct nlattr *tb[CTA_EXPECT_NAT_MAX+1]; |
| 2979 | struct nf_conntrack_tuple nat_tuple = {}; |
| 2980 | int err; |
| 2981 | |
Daniel Borkmann | 130ffbc | 2013-06-12 17:54:51 +0200 | [diff] [blame] | 2982 | err = nla_parse_nested(tb, CTA_EXPECT_NAT_MAX, attr, exp_nat_nla_policy); |
| 2983 | if (err < 0) |
| 2984 | return err; |
Pablo Neira Ayuso | 076a0ca | 2012-02-05 03:41:52 +0100 | [diff] [blame] | 2985 | |
| 2986 | if (!tb[CTA_EXPECT_NAT_DIR] || !tb[CTA_EXPECT_NAT_TUPLE]) |
| 2987 | return -EINVAL; |
| 2988 | |
| 2989 | err = ctnetlink_parse_tuple((const struct nlattr * const *)tb, |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 2990 | &nat_tuple, CTA_EXPECT_NAT_TUPLE, |
| 2991 | u3, NULL); |
Pablo Neira Ayuso | 076a0ca | 2012-02-05 03:41:52 +0100 | [diff] [blame] | 2992 | if (err < 0) |
| 2993 | return err; |
| 2994 | |
Patrick McHardy | c7232c9 | 2012-08-26 19:14:06 +0200 | [diff] [blame] | 2995 | exp->saved_addr = nat_tuple.src.u3; |
Pablo Neira Ayuso | 076a0ca | 2012-02-05 03:41:52 +0100 | [diff] [blame] | 2996 | exp->saved_proto = nat_tuple.src.u; |
| 2997 | exp->dir = ntohl(nla_get_be32(tb[CTA_EXPECT_NAT_DIR])); |
| 2998 | |
| 2999 | return 0; |
| 3000 | #else |
| 3001 | return -EOPNOTSUPP; |
| 3002 | #endif |
| 3003 | } |
| 3004 | |
Pablo Neira Ayuso | 0ef71ee | 2013-08-07 19:12:34 +0200 | [diff] [blame] | 3005 | static struct nf_conntrack_expect * |
| 3006 | ctnetlink_alloc_expect(const struct nlattr * const cda[], struct nf_conn *ct, |
| 3007 | struct nf_conntrack_helper *helper, |
| 3008 | struct nf_conntrack_tuple *tuple, |
| 3009 | struct nf_conntrack_tuple *mask) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3010 | { |
Pablo Neira Ayuso | b8c5e52 | 2012-02-05 03:21:12 +0100 | [diff] [blame] | 3011 | u_int32_t class = 0; |
Pablo Neira Ayuso | 0ef71ee | 2013-08-07 19:12:34 +0200 | [diff] [blame] | 3012 | struct nf_conntrack_expect *exp; |
| 3013 | struct nf_conn_help *help; |
| 3014 | int err; |
Pablo Neira Ayuso | 660fdb2 | 2012-02-05 02:34:16 +0100 | [diff] [blame] | 3015 | |
Pablo Neira Ayuso | b8c5e52 | 2012-02-05 03:21:12 +0100 | [diff] [blame] | 3016 | if (cda[CTA_EXPECT_CLASS] && helper) { |
| 3017 | class = ntohl(nla_get_be32(cda[CTA_EXPECT_CLASS])); |
Pablo Neira Ayuso | 0ef71ee | 2013-08-07 19:12:34 +0200 | [diff] [blame] | 3018 | if (class > helper->expect_class_max) |
| 3019 | return ERR_PTR(-EINVAL); |
Pablo Neira Ayuso | b8c5e52 | 2012-02-05 03:21:12 +0100 | [diff] [blame] | 3020 | } |
Patrick McHardy | 6823645 | 2007-07-07 22:30:49 -0700 | [diff] [blame] | 3021 | exp = nf_ct_expect_alloc(ct); |
Pablo Neira Ayuso | 0ef71ee | 2013-08-07 19:12:34 +0200 | [diff] [blame] | 3022 | if (!exp) |
| 3023 | return ERR_PTR(-ENOMEM); |
| 3024 | |
Pablo Neira Ayuso | bc01befd | 2010-09-28 21:06:34 +0200 | [diff] [blame] | 3025 | help = nfct_help(ct); |
| 3026 | if (!help) { |
| 3027 | if (!cda[CTA_EXPECT_TIMEOUT]) { |
| 3028 | err = -EINVAL; |
Jesper Juhl | 1310b955 | 2012-12-26 11:49:40 +0000 | [diff] [blame] | 3029 | goto err_out; |
Pablo Neira Ayuso | bc01befd | 2010-09-28 21:06:34 +0200 | [diff] [blame] | 3030 | } |
| 3031 | exp->timeout.expires = |
| 3032 | jiffies + ntohl(nla_get_be32(cda[CTA_EXPECT_TIMEOUT])) * HZ; |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 3033 | |
Pablo Neira Ayuso | bc01befd | 2010-09-28 21:06:34 +0200 | [diff] [blame] | 3034 | exp->flags = NF_CT_EXPECT_USERSPACE; |
| 3035 | if (cda[CTA_EXPECT_FLAGS]) { |
| 3036 | exp->flags |= |
| 3037 | ntohl(nla_get_be32(cda[CTA_EXPECT_FLAGS])); |
| 3038 | } |
| 3039 | } else { |
| 3040 | if (cda[CTA_EXPECT_FLAGS]) { |
| 3041 | exp->flags = ntohl(nla_get_be32(cda[CTA_EXPECT_FLAGS])); |
| 3042 | exp->flags &= ~NF_CT_EXPECT_USERSPACE; |
| 3043 | } else |
| 3044 | exp->flags = 0; |
| 3045 | } |
Pablo Neira Ayuso | 544d5c7 | 2012-02-05 03:44:51 +0100 | [diff] [blame] | 3046 | if (cda[CTA_EXPECT_FN]) { |
| 3047 | const char *name = nla_data(cda[CTA_EXPECT_FN]); |
| 3048 | struct nf_ct_helper_expectfn *expfn; |
| 3049 | |
| 3050 | expfn = nf_ct_helper_expectfn_find_by_name(name); |
| 3051 | if (expfn == NULL) { |
| 3052 | err = -EINVAL; |
| 3053 | goto err_out; |
| 3054 | } |
| 3055 | exp->expectfn = expfn->expectfn; |
| 3056 | } else |
| 3057 | exp->expectfn = NULL; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3058 | |
Pablo Neira Ayuso | b8c5e52 | 2012-02-05 03:21:12 +0100 | [diff] [blame] | 3059 | exp->class = class; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3060 | exp->master = ct; |
Pablo Neira Ayuso | 660fdb2 | 2012-02-05 02:34:16 +0100 | [diff] [blame] | 3061 | exp->helper = helper; |
Pablo Neira Ayuso | 0ef71ee | 2013-08-07 19:12:34 +0200 | [diff] [blame] | 3062 | exp->tuple = *tuple; |
| 3063 | exp->mask.src.u3 = mask->src.u3; |
| 3064 | exp->mask.src.u.all = mask->src.u.all; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3065 | |
Pablo Neira Ayuso | 076a0ca | 2012-02-05 03:41:52 +0100 | [diff] [blame] | 3066 | if (cda[CTA_EXPECT_NAT]) { |
| 3067 | err = ctnetlink_parse_expect_nat(cda[CTA_EXPECT_NAT], |
Pablo Neira Ayuso | 0ef71ee | 2013-08-07 19:12:34 +0200 | [diff] [blame] | 3068 | exp, nf_ct_l3num(ct)); |
Pablo Neira Ayuso | 076a0ca | 2012-02-05 03:41:52 +0100 | [diff] [blame] | 3069 | if (err < 0) |
| 3070 | goto err_out; |
| 3071 | } |
Pablo Neira Ayuso | 0ef71ee | 2013-08-07 19:12:34 +0200 | [diff] [blame] | 3072 | return exp; |
Pablo Neira Ayuso | 076a0ca | 2012-02-05 03:41:52 +0100 | [diff] [blame] | 3073 | err_out: |
Patrick McHardy | 6823645 | 2007-07-07 22:30:49 -0700 | [diff] [blame] | 3074 | nf_ct_expect_put(exp); |
Pablo Neira Ayuso | 0ef71ee | 2013-08-07 19:12:34 +0200 | [diff] [blame] | 3075 | return ERR_PTR(err); |
| 3076 | } |
| 3077 | |
| 3078 | static int |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 3079 | ctnetlink_create_expect(struct net *net, |
| 3080 | const struct nf_conntrack_zone *zone, |
Pablo Neira Ayuso | 0ef71ee | 2013-08-07 19:12:34 +0200 | [diff] [blame] | 3081 | const struct nlattr * const cda[], |
| 3082 | u_int8_t u3, u32 portid, int report) |
| 3083 | { |
| 3084 | struct nf_conntrack_tuple tuple, mask, master_tuple; |
| 3085 | struct nf_conntrack_tuple_hash *h = NULL; |
| 3086 | struct nf_conntrack_helper *helper = NULL; |
| 3087 | struct nf_conntrack_expect *exp; |
| 3088 | struct nf_conn *ct; |
| 3089 | int err; |
| 3090 | |
| 3091 | /* caller guarantees that those three CTA_EXPECT_* exist */ |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 3092 | err = ctnetlink_parse_tuple(cda, &tuple, CTA_EXPECT_TUPLE, |
| 3093 | u3, NULL); |
Pablo Neira Ayuso | 0ef71ee | 2013-08-07 19:12:34 +0200 | [diff] [blame] | 3094 | if (err < 0) |
| 3095 | return err; |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 3096 | err = ctnetlink_parse_tuple(cda, &mask, CTA_EXPECT_MASK, |
| 3097 | u3, NULL); |
Pablo Neira Ayuso | 0ef71ee | 2013-08-07 19:12:34 +0200 | [diff] [blame] | 3098 | if (err < 0) |
| 3099 | return err; |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 3100 | err = ctnetlink_parse_tuple(cda, &master_tuple, CTA_EXPECT_MASTER, |
| 3101 | u3, NULL); |
Pablo Neira Ayuso | 0ef71ee | 2013-08-07 19:12:34 +0200 | [diff] [blame] | 3102 | if (err < 0) |
| 3103 | return err; |
| 3104 | |
| 3105 | /* Look for master conntrack of this expectation */ |
| 3106 | h = nf_conntrack_find_get(net, zone, &master_tuple); |
| 3107 | if (!h) |
| 3108 | return -ENOENT; |
| 3109 | ct = nf_ct_tuplehash_to_ctrack(h); |
| 3110 | |
| 3111 | if (cda[CTA_EXPECT_HELP_NAME]) { |
| 3112 | const char *helpname = nla_data(cda[CTA_EXPECT_HELP_NAME]); |
| 3113 | |
| 3114 | helper = __nf_conntrack_helper_find(helpname, u3, |
| 3115 | nf_ct_protonum(ct)); |
| 3116 | if (helper == NULL) { |
| 3117 | #ifdef CONFIG_MODULES |
| 3118 | if (request_module("nfct-helper-%s", helpname) < 0) { |
| 3119 | err = -EOPNOTSUPP; |
| 3120 | goto err_ct; |
| 3121 | } |
| 3122 | helper = __nf_conntrack_helper_find(helpname, u3, |
| 3123 | nf_ct_protonum(ct)); |
| 3124 | if (helper) { |
| 3125 | err = -EAGAIN; |
| 3126 | goto err_ct; |
| 3127 | } |
| 3128 | #endif |
| 3129 | err = -EOPNOTSUPP; |
| 3130 | goto err_ct; |
| 3131 | } |
| 3132 | } |
| 3133 | |
| 3134 | exp = ctnetlink_alloc_expect(cda, ct, helper, &tuple, &mask); |
| 3135 | if (IS_ERR(exp)) { |
| 3136 | err = PTR_ERR(exp); |
| 3137 | goto err_ct; |
| 3138 | } |
| 3139 | |
| 3140 | err = nf_ct_expect_related_report(exp, portid, report); |
Pablo Neira Ayuso | 0ef71ee | 2013-08-07 19:12:34 +0200 | [diff] [blame] | 3141 | nf_ct_expect_put(exp); |
| 3142 | err_ct: |
| 3143 | nf_ct_put(ct); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3144 | return err; |
| 3145 | } |
| 3146 | |
Pablo Neira Ayuso | 7b8002a | 2015-12-15 18:41:56 +0100 | [diff] [blame] | 3147 | static int ctnetlink_new_expect(struct net *net, struct sock *ctnl, |
| 3148 | struct sk_buff *skb, const struct nlmsghdr *nlh, |
| 3149 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3150 | { |
| 3151 | struct nf_conntrack_tuple tuple; |
| 3152 | struct nf_conntrack_expect *exp; |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 3153 | struct nfgenmsg *nfmsg = nlmsg_data(nlh); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3154 | u_int8_t u3 = nfmsg->nfgen_family; |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 3155 | struct nf_conntrack_zone zone; |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 3156 | int err; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3157 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 3158 | if (!cda[CTA_EXPECT_TUPLE] |
| 3159 | || !cda[CTA_EXPECT_MASK] |
| 3160 | || !cda[CTA_EXPECT_MASTER]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3161 | return -EINVAL; |
| 3162 | |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 3163 | err = ctnetlink_parse_zone(cda[CTA_EXPECT_ZONE], &zone); |
| 3164 | if (err < 0) |
| 3165 | return err; |
| 3166 | |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 3167 | err = ctnetlink_parse_tuple(cda, &tuple, CTA_EXPECT_TUPLE, |
| 3168 | u3, NULL); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3169 | if (err < 0) |
| 3170 | return err; |
| 3171 | |
Jesper Dangaard Brouer | ca7433d | 2014-03-03 14:46:01 +0100 | [diff] [blame] | 3172 | spin_lock_bh(&nf_conntrack_expect_lock); |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 3173 | exp = __nf_ct_expect_find(net, &zone, &tuple); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3174 | if (!exp) { |
Jesper Dangaard Brouer | ca7433d | 2014-03-03 14:46:01 +0100 | [diff] [blame] | 3175 | spin_unlock_bh(&nf_conntrack_expect_lock); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3176 | err = -ENOENT; |
Pablo Neira Ayuso | 19abb7b | 2008-11-18 11:56:20 +0100 | [diff] [blame] | 3177 | if (nlh->nlmsg_flags & NLM_F_CREATE) { |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 3178 | err = ctnetlink_create_expect(net, &zone, cda, u3, |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 3179 | NETLINK_CB(skb).portid, |
Pablo Neira Ayuso | 19abb7b | 2008-11-18 11:56:20 +0100 | [diff] [blame] | 3180 | nlmsg_report(nlh)); |
| 3181 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3182 | return err; |
| 3183 | } |
| 3184 | |
| 3185 | err = -EEXIST; |
| 3186 | if (!(nlh->nlmsg_flags & NLM_F_EXCL)) |
| 3187 | err = ctnetlink_change_expect(exp, cda); |
Jesper Dangaard Brouer | ca7433d | 2014-03-03 14:46:01 +0100 | [diff] [blame] | 3188 | spin_unlock_bh(&nf_conntrack_expect_lock); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3189 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3190 | return err; |
| 3191 | } |
| 3192 | |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 3193 | static int |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 3194 | ctnetlink_exp_stat_fill_info(struct sk_buff *skb, u32 portid, u32 seq, int cpu, |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 3195 | const struct ip_conntrack_stat *st) |
| 3196 | { |
| 3197 | struct nlmsghdr *nlh; |
| 3198 | struct nfgenmsg *nfmsg; |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 3199 | unsigned int flags = portid ? NLM_F_MULTI : 0, event; |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 3200 | |
| 3201 | event = (NFNL_SUBSYS_CTNETLINK << 8 | IPCTNL_MSG_EXP_GET_STATS_CPU); |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 3202 | nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags); |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 3203 | if (nlh == NULL) |
| 3204 | goto nlmsg_failure; |
| 3205 | |
| 3206 | nfmsg = nlmsg_data(nlh); |
| 3207 | nfmsg->nfgen_family = AF_UNSPEC; |
| 3208 | nfmsg->version = NFNETLINK_V0; |
| 3209 | nfmsg->res_id = htons(cpu); |
| 3210 | |
| 3211 | if (nla_put_be32(skb, CTA_STATS_EXP_NEW, htonl(st->expect_new)) || |
| 3212 | nla_put_be32(skb, CTA_STATS_EXP_CREATE, htonl(st->expect_create)) || |
| 3213 | nla_put_be32(skb, CTA_STATS_EXP_DELETE, htonl(st->expect_delete))) |
| 3214 | goto nla_put_failure; |
| 3215 | |
| 3216 | nlmsg_end(skb, nlh); |
| 3217 | return skb->len; |
| 3218 | |
| 3219 | nla_put_failure: |
| 3220 | nlmsg_failure: |
| 3221 | nlmsg_cancel(skb, nlh); |
| 3222 | return -1; |
| 3223 | } |
| 3224 | |
| 3225 | static int |
| 3226 | ctnetlink_exp_stat_cpu_dump(struct sk_buff *skb, struct netlink_callback *cb) |
| 3227 | { |
| 3228 | int cpu; |
| 3229 | struct net *net = sock_net(skb->sk); |
| 3230 | |
| 3231 | if (cb->args[0] == nr_cpu_ids) |
| 3232 | return 0; |
| 3233 | |
| 3234 | for (cpu = cb->args[0]; cpu < nr_cpu_ids; cpu++) { |
| 3235 | const struct ip_conntrack_stat *st; |
| 3236 | |
| 3237 | if (!cpu_possible(cpu)) |
| 3238 | continue; |
| 3239 | |
| 3240 | st = per_cpu_ptr(net->ct.stat, cpu); |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 3241 | if (ctnetlink_exp_stat_fill_info(skb, NETLINK_CB(cb->skb).portid, |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 3242 | cb->nlh->nlmsg_seq, |
| 3243 | cpu, st) < 0) |
| 3244 | break; |
| 3245 | } |
| 3246 | cb->args[0] = cpu; |
| 3247 | |
| 3248 | return skb->len; |
| 3249 | } |
| 3250 | |
Pablo Neira Ayuso | 7b8002a | 2015-12-15 18:41:56 +0100 | [diff] [blame] | 3251 | static int ctnetlink_stat_exp_cpu(struct net *net, struct sock *ctnl, |
| 3252 | struct sk_buff *skb, |
| 3253 | const struct nlmsghdr *nlh, |
| 3254 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 3255 | { |
| 3256 | if (nlh->nlmsg_flags & NLM_F_DUMP) { |
| 3257 | struct netlink_dump_control c = { |
| 3258 | .dump = ctnetlink_exp_stat_cpu_dump, |
| 3259 | }; |
| 3260 | return netlink_dump_start(ctnl, skb, nlh, &c); |
| 3261 | } |
| 3262 | |
| 3263 | return 0; |
| 3264 | } |
| 3265 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3266 | #ifdef CONFIG_NF_CONNTRACK_EVENTS |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 3267 | static struct nf_ct_event_notifier ctnl_notifier = { |
| 3268 | .fcn = ctnetlink_conntrack_event, |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3269 | }; |
| 3270 | |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 3271 | static struct nf_exp_event_notifier ctnl_notifier_exp = { |
| 3272 | .fcn = ctnetlink_expect_event, |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3273 | }; |
| 3274 | #endif |
| 3275 | |
Patrick McHardy | 7c8d4cb | 2007-09-28 14:15:45 -0700 | [diff] [blame] | 3276 | static const struct nfnl_callback ctnl_cb[IPCTNL_MSG_MAX] = { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3277 | [IPCTNL_MSG_CT_NEW] = { .call = ctnetlink_new_conntrack, |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 3278 | .attr_count = CTA_MAX, |
| 3279 | .policy = ct_nla_policy }, |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3280 | [IPCTNL_MSG_CT_GET] = { .call = ctnetlink_get_conntrack, |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 3281 | .attr_count = CTA_MAX, |
| 3282 | .policy = ct_nla_policy }, |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3283 | [IPCTNL_MSG_CT_DELETE] = { .call = ctnetlink_del_conntrack, |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 3284 | .attr_count = CTA_MAX, |
| 3285 | .policy = ct_nla_policy }, |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3286 | [IPCTNL_MSG_CT_GET_CTRZERO] = { .call = ctnetlink_get_conntrack, |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 3287 | .attr_count = CTA_MAX, |
| 3288 | .policy = ct_nla_policy }, |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 3289 | [IPCTNL_MSG_CT_GET_STATS_CPU] = { .call = ctnetlink_stat_ct_cpu }, |
| 3290 | [IPCTNL_MSG_CT_GET_STATS] = { .call = ctnetlink_stat_ct }, |
Pablo Neira Ayuso | d871bef | 2012-11-27 14:49:42 +0100 | [diff] [blame] | 3291 | [IPCTNL_MSG_CT_GET_DYING] = { .call = ctnetlink_get_ct_dying }, |
| 3292 | [IPCTNL_MSG_CT_GET_UNCONFIRMED] = { .call = ctnetlink_get_ct_unconfirmed }, |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3293 | }; |
| 3294 | |
Patrick McHardy | 7c8d4cb | 2007-09-28 14:15:45 -0700 | [diff] [blame] | 3295 | static const struct nfnl_callback ctnl_exp_cb[IPCTNL_MSG_EXP_MAX] = { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3296 | [IPCTNL_MSG_EXP_GET] = { .call = ctnetlink_get_expect, |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 3297 | .attr_count = CTA_EXPECT_MAX, |
| 3298 | .policy = exp_nla_policy }, |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3299 | [IPCTNL_MSG_EXP_NEW] = { .call = ctnetlink_new_expect, |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 3300 | .attr_count = CTA_EXPECT_MAX, |
| 3301 | .policy = exp_nla_policy }, |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3302 | [IPCTNL_MSG_EXP_DELETE] = { .call = ctnetlink_del_expect, |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 3303 | .attr_count = CTA_EXPECT_MAX, |
| 3304 | .policy = exp_nla_policy }, |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 3305 | [IPCTNL_MSG_EXP_GET_STATS_CPU] = { .call = ctnetlink_stat_exp_cpu }, |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3306 | }; |
| 3307 | |
Patrick McHardy | 7c8d4cb | 2007-09-28 14:15:45 -0700 | [diff] [blame] | 3308 | static const struct nfnetlink_subsystem ctnl_subsys = { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3309 | .name = "conntrack", |
| 3310 | .subsys_id = NFNL_SUBSYS_CTNETLINK, |
| 3311 | .cb_count = IPCTNL_MSG_MAX, |
| 3312 | .cb = ctnl_cb, |
| 3313 | }; |
| 3314 | |
Patrick McHardy | 7c8d4cb | 2007-09-28 14:15:45 -0700 | [diff] [blame] | 3315 | static const struct nfnetlink_subsystem ctnl_exp_subsys = { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3316 | .name = "conntrack_expect", |
| 3317 | .subsys_id = NFNL_SUBSYS_CTNETLINK_EXP, |
| 3318 | .cb_count = IPCTNL_MSG_EXP_MAX, |
| 3319 | .cb = ctnl_exp_cb, |
| 3320 | }; |
| 3321 | |
Patrick McHardy | d2483dd | 2006-12-02 22:06:05 -0800 | [diff] [blame] | 3322 | MODULE_ALIAS("ip_conntrack_netlink"); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3323 | MODULE_ALIAS_NFNL_SUBSYS(NFNL_SUBSYS_CTNETLINK); |
Pablo Neira Ayuso | 34f9a2e | 2006-02-04 02:11:41 -0800 | [diff] [blame] | 3324 | MODULE_ALIAS_NFNL_SUBSYS(NFNL_SUBSYS_CTNETLINK_EXP); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3325 | |
Pablo Neira Ayuso | 70e9942 | 2011-11-22 00:16:51 +0100 | [diff] [blame] | 3326 | static int __net_init ctnetlink_net_init(struct net *net) |
| 3327 | { |
| 3328 | #ifdef CONFIG_NF_CONNTRACK_EVENTS |
| 3329 | int ret; |
| 3330 | |
| 3331 | ret = nf_conntrack_register_notifier(net, &ctnl_notifier); |
| 3332 | if (ret < 0) { |
| 3333 | pr_err("ctnetlink_init: cannot register notifier.\n"); |
| 3334 | goto err_out; |
| 3335 | } |
| 3336 | |
| 3337 | ret = nf_ct_expect_register_notifier(net, &ctnl_notifier_exp); |
| 3338 | if (ret < 0) { |
| 3339 | pr_err("ctnetlink_init: cannot expect register notifier.\n"); |
| 3340 | goto err_unreg_notifier; |
| 3341 | } |
| 3342 | #endif |
| 3343 | return 0; |
| 3344 | |
| 3345 | #ifdef CONFIG_NF_CONNTRACK_EVENTS |
| 3346 | err_unreg_notifier: |
| 3347 | nf_conntrack_unregister_notifier(net, &ctnl_notifier); |
| 3348 | err_out: |
| 3349 | return ret; |
| 3350 | #endif |
| 3351 | } |
| 3352 | |
| 3353 | static void ctnetlink_net_exit(struct net *net) |
| 3354 | { |
| 3355 | #ifdef CONFIG_NF_CONNTRACK_EVENTS |
| 3356 | nf_ct_expect_unregister_notifier(net, &ctnl_notifier_exp); |
| 3357 | nf_conntrack_unregister_notifier(net, &ctnl_notifier); |
| 3358 | #endif |
| 3359 | } |
| 3360 | |
| 3361 | static void __net_exit ctnetlink_net_exit_batch(struct list_head *net_exit_list) |
| 3362 | { |
| 3363 | struct net *net; |
| 3364 | |
| 3365 | list_for_each_entry(net, net_exit_list, exit_list) |
| 3366 | ctnetlink_net_exit(net); |
| 3367 | } |
| 3368 | |
| 3369 | static struct pernet_operations ctnetlink_net_ops = { |
| 3370 | .init = ctnetlink_net_init, |
| 3371 | .exit_batch = ctnetlink_net_exit_batch, |
| 3372 | }; |
| 3373 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3374 | static int __init ctnetlink_init(void) |
| 3375 | { |
| 3376 | int ret; |
| 3377 | |
Stephen Hemminger | 654d0fb | 2010-05-13 15:02:08 +0200 | [diff] [blame] | 3378 | pr_info("ctnetlink v%s: registering with nfnetlink.\n", version); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3379 | ret = nfnetlink_subsys_register(&ctnl_subsys); |
| 3380 | if (ret < 0) { |
Stephen Hemminger | 654d0fb | 2010-05-13 15:02:08 +0200 | [diff] [blame] | 3381 | pr_err("ctnetlink_init: cannot register with nfnetlink.\n"); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3382 | goto err_out; |
| 3383 | } |
| 3384 | |
| 3385 | ret = nfnetlink_subsys_register(&ctnl_exp_subsys); |
| 3386 | if (ret < 0) { |
Stephen Hemminger | 654d0fb | 2010-05-13 15:02:08 +0200 | [diff] [blame] | 3387 | pr_err("ctnetlink_init: cannot register exp with nfnetlink.\n"); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3388 | goto err_unreg_subsys; |
| 3389 | } |
| 3390 | |
Julia Lawall | ef6acf6 | 2012-08-29 06:49:16 +0000 | [diff] [blame] | 3391 | ret = register_pernet_subsys(&ctnetlink_net_ops); |
| 3392 | if (ret < 0) { |
Pablo Neira Ayuso | 70e9942 | 2011-11-22 00:16:51 +0100 | [diff] [blame] | 3393 | pr_err("ctnetlink_init: cannot register pernet operations\n"); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3394 | goto err_unreg_exp_subsys; |
| 3395 | } |
Ken-ichirou MATSUZAWA | 83f3e94 | 2015-10-05 11:48:47 +0900 | [diff] [blame] | 3396 | #ifdef CONFIG_NETFILTER_NETLINK_GLUE_CT |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 3397 | /* setup interaction between nf_queue and nf_conntrack_netlink. */ |
Ken-ichirou MATSUZAWA | a4b4766 | 2015-10-05 11:47:13 +0900 | [diff] [blame] | 3398 | RCU_INIT_POINTER(nfnl_ct_hook, &ctnetlink_glue_hook); |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 3399 | #endif |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3400 | return 0; |
| 3401 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3402 | err_unreg_exp_subsys: |
| 3403 | nfnetlink_subsys_unregister(&ctnl_exp_subsys); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3404 | err_unreg_subsys: |
| 3405 | nfnetlink_subsys_unregister(&ctnl_subsys); |
| 3406 | err_out: |
| 3407 | return ret; |
| 3408 | } |
| 3409 | |
| 3410 | static void __exit ctnetlink_exit(void) |
| 3411 | { |
Stephen Hemminger | 654d0fb | 2010-05-13 15:02:08 +0200 | [diff] [blame] | 3412 | pr_info("ctnetlink: unregistering from nfnetlink.\n"); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3413 | |
Pablo Neira Ayuso | 70e9942 | 2011-11-22 00:16:51 +0100 | [diff] [blame] | 3414 | unregister_pernet_subsys(&ctnetlink_net_ops); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3415 | nfnetlink_subsys_unregister(&ctnl_exp_subsys); |
| 3416 | nfnetlink_subsys_unregister(&ctnl_subsys); |
Ken-ichirou MATSUZAWA | 83f3e94 | 2015-10-05 11:48:47 +0900 | [diff] [blame] | 3417 | #ifdef CONFIG_NETFILTER_NETLINK_GLUE_CT |
Ken-ichirou MATSUZAWA | a4b4766 | 2015-10-05 11:47:13 +0900 | [diff] [blame] | 3418 | RCU_INIT_POINTER(nfnl_ct_hook, NULL); |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 3419 | #endif |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3420 | } |
| 3421 | |
| 3422 | module_init(ctnetlink_init); |
| 3423 | module_exit(ctnetlink_exit); |