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> |
Jozsef Kadlecsik | 5b1158e | 2006-12-02 22:07:13 -0800 | [diff] [blame] | 48 | #ifdef CONFIG_NF_NAT_NEEDED |
| 49 | #include <net/netfilter/nf_nat_core.h> |
Patrick McHardy | c7232c9 | 2012-08-26 19:14:06 +0200 | [diff] [blame] | 50 | #include <net/netfilter/nf_nat_l4proto.h> |
Pablo Neira Ayuso | 8c88f87 | 2012-06-07 13:31:25 +0200 | [diff] [blame] | 51 | #include <net/netfilter/nf_nat_helper.h> |
Jozsef Kadlecsik | 5b1158e | 2006-12-02 22:07:13 -0800 | [diff] [blame] | 52 | #endif |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 53 | |
| 54 | #include <linux/netfilter/nfnetlink.h> |
| 55 | #include <linux/netfilter/nfnetlink_conntrack.h> |
| 56 | |
| 57 | MODULE_LICENSE("GPL"); |
| 58 | |
Harald Welte | dc808fe | 2006-03-20 17:56:32 -0800 | [diff] [blame] | 59 | static char __initdata version[] = "0.93"; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 60 | |
Pablo Neira Ayuso | 4054ff4 | 2016-04-12 23:32:34 +0200 | [diff] [blame] | 61 | static int ctnetlink_dump_tuples_proto(struct sk_buff *skb, |
| 62 | const struct nf_conntrack_tuple *tuple, |
| 63 | struct nf_conntrack_l4proto *l4proto) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 64 | { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 65 | int ret = 0; |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 66 | struct nlattr *nest_parms; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 67 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 68 | nest_parms = nla_nest_start(skb, CTA_TUPLE_PROTO | NLA_F_NESTED); |
| 69 | if (!nest_parms) |
| 70 | goto nla_put_failure; |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 71 | if (nla_put_u8(skb, CTA_PROTO_NUM, tuple->dst.protonum)) |
| 72 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 73 | |
Patrick McHardy | fdf7083 | 2007-09-28 14:37:41 -0700 | [diff] [blame] | 74 | if (likely(l4proto->tuple_to_nlattr)) |
| 75 | ret = l4proto->tuple_to_nlattr(skb, tuple); |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 76 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 77 | nla_nest_end(skb, nest_parms); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 78 | |
| 79 | return ret; |
| 80 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 81 | nla_put_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 82 | return -1; |
| 83 | } |
| 84 | |
Pablo Neira Ayuso | 4054ff4 | 2016-04-12 23:32:34 +0200 | [diff] [blame] | 85 | static int ctnetlink_dump_tuples_ip(struct sk_buff *skb, |
| 86 | const struct nf_conntrack_tuple *tuple, |
| 87 | struct nf_conntrack_l3proto *l3proto) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 88 | { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 89 | int ret = 0; |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 90 | struct nlattr *nest_parms; |
| 91 | |
| 92 | nest_parms = nla_nest_start(skb, CTA_TUPLE_IP | NLA_F_NESTED); |
| 93 | if (!nest_parms) |
| 94 | goto nla_put_failure; |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 95 | |
Patrick McHardy | fdf7083 | 2007-09-28 14:37:41 -0700 | [diff] [blame] | 96 | if (likely(l3proto->tuple_to_nlattr)) |
| 97 | ret = l3proto->tuple_to_nlattr(skb, tuple); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 98 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 99 | nla_nest_end(skb, nest_parms); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 100 | |
| 101 | return ret; |
| 102 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 103 | nla_put_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 104 | return -1; |
| 105 | } |
| 106 | |
Pablo Neira Ayuso | 4054ff4 | 2016-04-12 23:32:34 +0200 | [diff] [blame] | 107 | static int ctnetlink_dump_tuples(struct sk_buff *skb, |
| 108 | const struct nf_conntrack_tuple *tuple) |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 109 | { |
| 110 | int ret; |
| 111 | struct nf_conntrack_l3proto *l3proto; |
Martin Josefsson | 605dcad | 2006-11-29 02:35:06 +0100 | [diff] [blame] | 112 | struct nf_conntrack_l4proto *l4proto; |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 113 | |
Hans Schillstrom | 3b988ec | 2012-03-05 02:24:29 +0000 | [diff] [blame] | 114 | rcu_read_lock(); |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 115 | l3proto = __nf_ct_l3proto_find(tuple->src.l3num); |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 116 | ret = ctnetlink_dump_tuples_ip(skb, tuple, l3proto); |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 117 | |
Hans Schillstrom | 3b988ec | 2012-03-05 02:24:29 +0000 | [diff] [blame] | 118 | if (ret >= 0) { |
| 119 | l4proto = __nf_ct_l4proto_find(tuple->src.l3num, |
| 120 | tuple->dst.protonum); |
| 121 | ret = ctnetlink_dump_tuples_proto(skb, tuple, l4proto); |
| 122 | } |
| 123 | rcu_read_unlock(); |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 124 | return ret; |
| 125 | } |
| 126 | |
Pablo Neira Ayuso | 4054ff4 | 2016-04-12 23:32:34 +0200 | [diff] [blame] | 127 | static int ctnetlink_dump_zone_id(struct sk_buff *skb, int attrtype, |
| 128 | const struct nf_conntrack_zone *zone, int dir) |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 129 | { |
| 130 | if (zone->id == NF_CT_DEFAULT_ZONE_ID || zone->dir != dir) |
| 131 | return 0; |
| 132 | if (nla_put_be16(skb, attrtype, htons(zone->id))) |
| 133 | goto nla_put_failure; |
| 134 | return 0; |
| 135 | |
| 136 | nla_put_failure: |
| 137 | return -1; |
| 138 | } |
| 139 | |
Pablo Neira Ayuso | 4054ff4 | 2016-04-12 23:32:34 +0200 | [diff] [blame] | 140 | 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] | 141 | { |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 142 | if (nla_put_be32(skb, CTA_STATUS, htonl(ct->status))) |
| 143 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 144 | return 0; |
| 145 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 146 | nla_put_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 147 | return -1; |
| 148 | } |
| 149 | |
Pablo Neira Ayuso | 4054ff4 | 2016-04-12 23:32:34 +0200 | [diff] [blame] | 150 | 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] | 151 | { |
Xi Wang | c121638 | 2011-12-30 10:40:17 -0500 | [diff] [blame] | 152 | long timeout = ((long)ct->timeout.expires - (long)jiffies) / HZ; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 153 | |
Patrick McHardy | 77236b6 | 2007-12-17 22:29:45 -0800 | [diff] [blame] | 154 | if (timeout < 0) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 155 | timeout = 0; |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 156 | |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 157 | if (nla_put_be32(skb, CTA_TIMEOUT, htonl(timeout))) |
| 158 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 159 | return 0; |
| 160 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 161 | nla_put_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 162 | return -1; |
| 163 | } |
| 164 | |
Pablo Neira Ayuso | 4054ff4 | 2016-04-12 23:32:34 +0200 | [diff] [blame] | 165 | 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] | 166 | { |
Patrick McHardy | 5e8fbe2 | 2008-04-14 11:15:52 +0200 | [diff] [blame] | 167 | struct nf_conntrack_l4proto *l4proto; |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 168 | struct nlattr *nest_proto; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 169 | int ret; |
| 170 | |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 171 | l4proto = __nf_ct_l4proto_find(nf_ct_l3num(ct), nf_ct_protonum(ct)); |
| 172 | if (!l4proto->to_nlattr) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 173 | return 0; |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 174 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 175 | nest_proto = nla_nest_start(skb, CTA_PROTOINFO | NLA_F_NESTED); |
| 176 | if (!nest_proto) |
| 177 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 178 | |
Patrick McHardy | fdf7083 | 2007-09-28 14:37:41 -0700 | [diff] [blame] | 179 | ret = l4proto->to_nlattr(skb, nest_proto, ct); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 180 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 181 | nla_nest_end(skb, nest_proto); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 182 | |
| 183 | return ret; |
| 184 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 185 | nla_put_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 186 | return -1; |
| 187 | } |
| 188 | |
Pablo Neira Ayuso | 4054ff4 | 2016-04-12 23:32:34 +0200 | [diff] [blame] | 189 | static int ctnetlink_dump_helpinfo(struct sk_buff *skb, |
| 190 | const struct nf_conn *ct) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 191 | { |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 192 | struct nlattr *nest_helper; |
Harald Welte | dc808fe | 2006-03-20 17:56:32 -0800 | [diff] [blame] | 193 | const struct nf_conn_help *help = nfct_help(ct); |
Patrick McHarrdy | 3c158f7 | 2007-06-05 12:55:27 -0700 | [diff] [blame] | 194 | struct nf_conntrack_helper *helper; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 195 | |
Patrick McHarrdy | 3c158f7 | 2007-06-05 12:55:27 -0700 | [diff] [blame] | 196 | if (!help) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 197 | return 0; |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 198 | |
Patrick McHarrdy | 3c158f7 | 2007-06-05 12:55:27 -0700 | [diff] [blame] | 199 | helper = rcu_dereference(help->helper); |
| 200 | if (!helper) |
| 201 | goto out; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 202 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 203 | nest_helper = nla_nest_start(skb, CTA_HELP | NLA_F_NESTED); |
| 204 | if (!nest_helper) |
| 205 | goto nla_put_failure; |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 206 | if (nla_put_string(skb, CTA_HELP_NAME, helper->name)) |
| 207 | goto nla_put_failure; |
Patrick McHarrdy | 3c158f7 | 2007-06-05 12:55:27 -0700 | [diff] [blame] | 208 | |
Patrick McHardy | fdf7083 | 2007-09-28 14:37:41 -0700 | [diff] [blame] | 209 | if (helper->to_nlattr) |
| 210 | helper->to_nlattr(skb, ct); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 211 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 212 | nla_nest_end(skb, nest_helper); |
Patrick McHarrdy | 3c158f7 | 2007-06-05 12:55:27 -0700 | [diff] [blame] | 213 | out: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 214 | return 0; |
| 215 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 216 | nla_put_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 217 | return -1; |
| 218 | } |
| 219 | |
Ilpo Järvinen | bb5cf80 | 2008-01-05 23:11:31 -0800 | [diff] [blame] | 220 | static int |
Holger Eitzenberger | 4542fa4 | 2013-09-26 17:31:52 +0200 | [diff] [blame] | 221 | dump_counters(struct sk_buff *skb, struct nf_conn_acct *acct, |
| 222 | enum ip_conntrack_dir dir, int type) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 223 | { |
Holger Eitzenberger | 4542fa4 | 2013-09-26 17:31:52 +0200 | [diff] [blame] | 224 | enum ctattr_type attr = dir ? CTA_COUNTERS_REPLY: CTA_COUNTERS_ORIG; |
| 225 | struct nf_conn_counter *counter = acct->counter; |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 226 | struct nlattr *nest_count; |
Holger Eitzenberger | 4542fa4 | 2013-09-26 17:31:52 +0200 | [diff] [blame] | 227 | u64 pkts, bytes; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 228 | |
Holger Eitzenberger | 4542fa4 | 2013-09-26 17:31:52 +0200 | [diff] [blame] | 229 | if (type == IPCTNL_MSG_CT_GET_CTRZERO) { |
| 230 | pkts = atomic64_xchg(&counter[dir].packets, 0); |
| 231 | bytes = atomic64_xchg(&counter[dir].bytes, 0); |
| 232 | } else { |
| 233 | pkts = atomic64_read(&counter[dir].packets); |
| 234 | bytes = atomic64_read(&counter[dir].bytes); |
| 235 | } |
| 236 | |
| 237 | nest_count = nla_nest_start(skb, attr | NLA_F_NESTED); |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 238 | if (!nest_count) |
| 239 | goto nla_put_failure; |
| 240 | |
Nicolas Dichtel | b46f6de | 2016-04-22 17:31:18 +0200 | [diff] [blame] | 241 | if (nla_put_be64(skb, CTA_COUNTERS_PACKETS, cpu_to_be64(pkts), |
| 242 | CTA_COUNTERS_PAD) || |
| 243 | nla_put_be64(skb, CTA_COUNTERS_BYTES, cpu_to_be64(bytes), |
| 244 | CTA_COUNTERS_PAD)) |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 245 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 246 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 247 | nla_nest_end(skb, nest_count); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 248 | |
| 249 | return 0; |
| 250 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 251 | nla_put_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 252 | return -1; |
| 253 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 254 | |
Pablo Neira Ayuso | a992ca2 | 2011-01-19 16:00:07 +0100 | [diff] [blame] | 255 | static int |
Holger Eitzenberger | 4542fa4 | 2013-09-26 17:31:52 +0200 | [diff] [blame] | 256 | 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] | 257 | { |
Holger Eitzenberger | 4542fa4 | 2013-09-26 17:31:52 +0200 | [diff] [blame] | 258 | struct nf_conn_acct *acct = nf_conn_acct_find(ct); |
Pablo Neira Ayuso | 80e60e6 | 2011-12-24 14:11:39 +0100 | [diff] [blame] | 259 | |
Pablo Neira Ayuso | 80e60e6 | 2011-12-24 14:11:39 +0100 | [diff] [blame] | 260 | if (!acct) |
| 261 | return 0; |
| 262 | |
Holger Eitzenberger | 4542fa4 | 2013-09-26 17:31:52 +0200 | [diff] [blame] | 263 | if (dump_counters(skb, acct, IP_CT_DIR_ORIGINAL, type) < 0) |
| 264 | return -1; |
| 265 | if (dump_counters(skb, acct, IP_CT_DIR_REPLY, type) < 0) |
| 266 | return -1; |
| 267 | |
| 268 | return 0; |
Pablo Neira Ayuso | 80e60e6 | 2011-12-24 14:11:39 +0100 | [diff] [blame] | 269 | } |
| 270 | |
| 271 | static int |
Pablo Neira Ayuso | a992ca2 | 2011-01-19 16:00:07 +0100 | [diff] [blame] | 272 | ctnetlink_dump_timestamp(struct sk_buff *skb, const struct nf_conn *ct) |
| 273 | { |
| 274 | struct nlattr *nest_count; |
| 275 | const struct nf_conn_tstamp *tstamp; |
| 276 | |
| 277 | tstamp = nf_conn_tstamp_find(ct); |
| 278 | if (!tstamp) |
| 279 | return 0; |
| 280 | |
| 281 | nest_count = nla_nest_start(skb, CTA_TIMESTAMP | NLA_F_NESTED); |
| 282 | if (!nest_count) |
| 283 | goto nla_put_failure; |
| 284 | |
Nicolas Dichtel | b46f6de | 2016-04-22 17:31:18 +0200 | [diff] [blame] | 285 | if (nla_put_be64(skb, CTA_TIMESTAMP_START, cpu_to_be64(tstamp->start), |
| 286 | CTA_TIMESTAMP_PAD) || |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 287 | (tstamp->stop != 0 && nla_put_be64(skb, CTA_TIMESTAMP_STOP, |
Nicolas Dichtel | b46f6de | 2016-04-22 17:31:18 +0200 | [diff] [blame] | 288 | cpu_to_be64(tstamp->stop), |
| 289 | CTA_TIMESTAMP_PAD))) |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 290 | goto nla_put_failure; |
Pablo Neira Ayuso | a992ca2 | 2011-01-19 16:00:07 +0100 | [diff] [blame] | 291 | nla_nest_end(skb, nest_count); |
| 292 | |
| 293 | return 0; |
| 294 | |
| 295 | nla_put_failure: |
| 296 | return -1; |
| 297 | } |
| 298 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 299 | #ifdef CONFIG_NF_CONNTRACK_MARK |
Pablo Neira Ayuso | 4054ff4 | 2016-04-12 23:32:34 +0200 | [diff] [blame] | 300 | 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] | 301 | { |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 302 | if (nla_put_be32(skb, CTA_MARK, htonl(ct->mark))) |
| 303 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 304 | return 0; |
| 305 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 306 | nla_put_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 307 | return -1; |
| 308 | } |
| 309 | #else |
| 310 | #define ctnetlink_dump_mark(a, b) (0) |
| 311 | #endif |
| 312 | |
Pablo Neira Ayuso | 37fccd8 | 2007-12-17 22:28:41 -0800 | [diff] [blame] | 313 | #ifdef CONFIG_NF_CONNTRACK_SECMARK |
Pablo Neira Ayuso | 4054ff4 | 2016-04-12 23:32:34 +0200 | [diff] [blame] | 314 | 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] | 315 | { |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 316 | struct nlattr *nest_secctx; |
| 317 | int len, ret; |
| 318 | char *secctx; |
Pablo Neira Ayuso | 37fccd8 | 2007-12-17 22:28:41 -0800 | [diff] [blame] | 319 | |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 320 | ret = security_secid_to_secctx(ct->secmark, &secctx, &len); |
| 321 | if (ret) |
Pablo Neira Ayuso | cba85b5 | 2011-01-06 11:25:00 -0800 | [diff] [blame] | 322 | return 0; |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 323 | |
| 324 | ret = -1; |
| 325 | nest_secctx = nla_nest_start(skb, CTA_SECCTX | NLA_F_NESTED); |
| 326 | if (!nest_secctx) |
| 327 | goto nla_put_failure; |
| 328 | |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 329 | if (nla_put_string(skb, CTA_SECCTX_NAME, secctx)) |
| 330 | goto nla_put_failure; |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 331 | nla_nest_end(skb, nest_secctx); |
| 332 | |
| 333 | ret = 0; |
Pablo Neira Ayuso | 37fccd8 | 2007-12-17 22:28:41 -0800 | [diff] [blame] | 334 | nla_put_failure: |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 335 | security_release_secctx(secctx, len); |
| 336 | return ret; |
Pablo Neira Ayuso | 37fccd8 | 2007-12-17 22:28:41 -0800 | [diff] [blame] | 337 | } |
| 338 | #else |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 339 | #define ctnetlink_dump_secctx(a, b) (0) |
Pablo Neira Ayuso | 37fccd8 | 2007-12-17 22:28:41 -0800 | [diff] [blame] | 340 | #endif |
| 341 | |
Florian Westphal | 0ceabd8 | 2013-01-11 06:30:45 +0000 | [diff] [blame] | 342 | #ifdef CONFIG_NF_CONNTRACK_LABELS |
Pablo Neira Ayuso | 4a96300 | 2016-04-15 12:24:57 +0200 | [diff] [blame] | 343 | static inline int ctnetlink_label_size(const struct nf_conn *ct) |
Florian Westphal | 0ceabd8 | 2013-01-11 06:30:45 +0000 | [diff] [blame] | 344 | { |
| 345 | struct nf_conn_labels *labels = nf_ct_labels_find(ct); |
| 346 | |
| 347 | if (!labels) |
| 348 | return 0; |
Florian Westphal | 2301401 | 2016-07-21 12:51:16 +0200 | [diff] [blame] | 349 | return nla_total_size(sizeof(labels->bits)); |
Florian Westphal | 0ceabd8 | 2013-01-11 06:30:45 +0000 | [diff] [blame] | 350 | } |
| 351 | |
| 352 | static int |
| 353 | ctnetlink_dump_labels(struct sk_buff *skb, const struct nf_conn *ct) |
| 354 | { |
| 355 | struct nf_conn_labels *labels = nf_ct_labels_find(ct); |
Florian Westphal | 2301401 | 2016-07-21 12:51:16 +0200 | [diff] [blame] | 356 | unsigned int i; |
Florian Westphal | 0ceabd8 | 2013-01-11 06:30:45 +0000 | [diff] [blame] | 357 | |
| 358 | if (!labels) |
| 359 | return 0; |
| 360 | |
Florian Westphal | 0ceabd8 | 2013-01-11 06:30:45 +0000 | [diff] [blame] | 361 | i = 0; |
| 362 | do { |
| 363 | if (labels->bits[i] != 0) |
Florian Westphal | 2301401 | 2016-07-21 12:51:16 +0200 | [diff] [blame] | 364 | return nla_put(skb, CTA_LABELS, sizeof(labels->bits), |
| 365 | labels->bits); |
Florian Westphal | 0ceabd8 | 2013-01-11 06:30:45 +0000 | [diff] [blame] | 366 | i++; |
Florian Westphal | 2301401 | 2016-07-21 12:51:16 +0200 | [diff] [blame] | 367 | } while (i < ARRAY_SIZE(labels->bits)); |
Florian Westphal | 0ceabd8 | 2013-01-11 06:30:45 +0000 | [diff] [blame] | 368 | |
| 369 | return 0; |
| 370 | } |
| 371 | #else |
| 372 | #define ctnetlink_dump_labels(a, b) (0) |
| 373 | #define ctnetlink_label_size(a) (0) |
| 374 | #endif |
| 375 | |
Pablo Neira Ayuso | 0f417ce | 2007-12-17 22:28:19 -0800 | [diff] [blame] | 376 | #define master_tuple(ct) &(ct->master->tuplehash[IP_CT_DIR_ORIGINAL].tuple) |
| 377 | |
Pablo Neira Ayuso | 4054ff4 | 2016-04-12 23:32:34 +0200 | [diff] [blame] | 378 | 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] | 379 | { |
| 380 | struct nlattr *nest_parms; |
| 381 | |
| 382 | if (!(ct->status & IPS_EXPECTED)) |
| 383 | return 0; |
| 384 | |
| 385 | nest_parms = nla_nest_start(skb, CTA_TUPLE_MASTER | NLA_F_NESTED); |
| 386 | if (!nest_parms) |
| 387 | goto nla_put_failure; |
| 388 | if (ctnetlink_dump_tuples(skb, master_tuple(ct)) < 0) |
| 389 | goto nla_put_failure; |
| 390 | nla_nest_end(skb, nest_parms); |
| 391 | |
| 392 | return 0; |
| 393 | |
| 394 | nla_put_failure: |
| 395 | return -1; |
| 396 | } |
| 397 | |
Ilpo Järvinen | bb5cf80 | 2008-01-05 23:11:31 -0800 | [diff] [blame] | 398 | static int |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 399 | 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] | 400 | { |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 401 | struct nlattr *nest_parms; |
| 402 | |
| 403 | nest_parms = nla_nest_start(skb, type | NLA_F_NESTED); |
| 404 | if (!nest_parms) |
| 405 | goto nla_put_failure; |
| 406 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 407 | if (nla_put_be32(skb, CTA_SEQADJ_CORRECTION_POS, |
| 408 | htonl(seq->correction_pos)) || |
| 409 | nla_put_be32(skb, CTA_SEQADJ_OFFSET_BEFORE, |
| 410 | htonl(seq->offset_before)) || |
| 411 | nla_put_be32(skb, CTA_SEQADJ_OFFSET_AFTER, |
| 412 | htonl(seq->offset_after))) |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 413 | goto nla_put_failure; |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 414 | |
| 415 | nla_nest_end(skb, nest_parms); |
| 416 | |
| 417 | return 0; |
| 418 | |
| 419 | nla_put_failure: |
| 420 | return -1; |
| 421 | } |
| 422 | |
Pablo Neira Ayuso | 4054ff4 | 2016-04-12 23:32:34 +0200 | [diff] [blame] | 423 | static int ctnetlink_dump_ct_seq_adj(struct sk_buff *skb, |
| 424 | const struct nf_conn *ct) |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 425 | { |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 426 | struct nf_conn_seqadj *seqadj = nfct_seqadj(ct); |
| 427 | struct nf_ct_seqadj *seq; |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 428 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 429 | if (!(ct->status & IPS_SEQ_ADJUST) || !seqadj) |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 430 | return 0; |
| 431 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 432 | seq = &seqadj->seq[IP_CT_DIR_ORIGINAL]; |
| 433 | 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] | 434 | return -1; |
| 435 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 436 | seq = &seqadj->seq[IP_CT_DIR_REPLY]; |
| 437 | 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] | 438 | return -1; |
| 439 | |
| 440 | return 0; |
| 441 | } |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 442 | |
Pablo Neira Ayuso | 4054ff4 | 2016-04-12 23:32:34 +0200 | [diff] [blame] | 443 | 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] | 444 | { |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 445 | if (nla_put_be32(skb, CTA_ID, htonl((unsigned long)ct))) |
| 446 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 447 | return 0; |
| 448 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 449 | nla_put_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 450 | return -1; |
| 451 | } |
| 452 | |
Pablo Neira Ayuso | 4054ff4 | 2016-04-12 23:32:34 +0200 | [diff] [blame] | 453 | 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] | 454 | { |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 455 | if (nla_put_be32(skb, CTA_USE, htonl(atomic_read(&ct->ct_general.use)))) |
| 456 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 457 | return 0; |
| 458 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 459 | nla_put_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 460 | return -1; |
| 461 | } |
| 462 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 463 | static int |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 464 | 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] | 465 | struct nf_conn *ct) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 466 | { |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 467 | const struct nf_conntrack_zone *zone; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 468 | struct nlmsghdr *nlh; |
| 469 | struct nfgenmsg *nfmsg; |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 470 | struct nlattr *nest_parms; |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 471 | unsigned int flags = portid ? NLM_F_MULTI : 0, event; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 472 | |
Pablo Neira Ayuso | 80e60e6 | 2011-12-24 14:11:39 +0100 | [diff] [blame] | 473 | event = (NFNL_SUBSYS_CTNETLINK << 8 | IPCTNL_MSG_CT_NEW); |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 474 | nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags); |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 475 | if (nlh == NULL) |
| 476 | goto nlmsg_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 477 | |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 478 | nfmsg = nlmsg_data(nlh); |
Patrick McHardy | 5e8fbe2 | 2008-04-14 11:15:52 +0200 | [diff] [blame] | 479 | nfmsg->nfgen_family = nf_ct_l3num(ct); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 480 | nfmsg->version = NFNETLINK_V0; |
| 481 | nfmsg->res_id = 0; |
| 482 | |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 483 | zone = nf_ct_zone(ct); |
| 484 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 485 | nest_parms = nla_nest_start(skb, CTA_TUPLE_ORIG | NLA_F_NESTED); |
| 486 | if (!nest_parms) |
| 487 | goto nla_put_failure; |
Pablo Neira Ayuso | f2f3e38 | 2009-06-02 20:03:35 +0200 | [diff] [blame] | 488 | 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] | 489 | goto nla_put_failure; |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 490 | if (ctnetlink_dump_zone_id(skb, CTA_TUPLE_ZONE, zone, |
| 491 | NF_CT_ZONE_DIR_ORIG) < 0) |
| 492 | goto nla_put_failure; |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 493 | nla_nest_end(skb, nest_parms); |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 494 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 495 | nest_parms = nla_nest_start(skb, CTA_TUPLE_REPLY | NLA_F_NESTED); |
| 496 | if (!nest_parms) |
| 497 | goto nla_put_failure; |
Pablo Neira Ayuso | f2f3e38 | 2009-06-02 20:03:35 +0200 | [diff] [blame] | 498 | 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] | 499 | goto nla_put_failure; |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 500 | if (ctnetlink_dump_zone_id(skb, CTA_TUPLE_ZONE, zone, |
| 501 | NF_CT_ZONE_DIR_REPL) < 0) |
| 502 | goto nla_put_failure; |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 503 | nla_nest_end(skb, nest_parms); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 504 | |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 505 | if (ctnetlink_dump_zone_id(skb, CTA_ZONE, zone, |
| 506 | NF_CT_DEFAULT_ZONE_DIR) < 0) |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 507 | goto nla_put_failure; |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 508 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 509 | if (ctnetlink_dump_status(skb, ct) < 0 || |
| 510 | ctnetlink_dump_timeout(skb, ct) < 0 || |
Holger Eitzenberger | 4542fa4 | 2013-09-26 17:31:52 +0200 | [diff] [blame] | 511 | ctnetlink_dump_acct(skb, ct, type) < 0 || |
Pablo Neira Ayuso | a992ca2 | 2011-01-19 16:00:07 +0100 | [diff] [blame] | 512 | ctnetlink_dump_timestamp(skb, ct) < 0 || |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 513 | ctnetlink_dump_protoinfo(skb, ct) < 0 || |
| 514 | ctnetlink_dump_helpinfo(skb, ct) < 0 || |
| 515 | ctnetlink_dump_mark(skb, ct) < 0 || |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 516 | ctnetlink_dump_secctx(skb, ct) < 0 || |
Florian Westphal | 0ceabd8 | 2013-01-11 06:30:45 +0000 | [diff] [blame] | 517 | ctnetlink_dump_labels(skb, ct) < 0 || |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 518 | ctnetlink_dump_id(skb, ct) < 0 || |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 519 | ctnetlink_dump_use(skb, ct) < 0 || |
Pablo Neira Ayuso | 0f417ce | 2007-12-17 22:28:19 -0800 | [diff] [blame] | 520 | ctnetlink_dump_master(skb, ct) < 0 || |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 521 | ctnetlink_dump_ct_seq_adj(skb, ct) < 0) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 522 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 523 | |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 524 | nlmsg_end(skb, nlh); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 525 | return skb->len; |
| 526 | |
| 527 | nlmsg_failure: |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 528 | nla_put_failure: |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 529 | nlmsg_cancel(skb, nlh); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 530 | return -1; |
| 531 | } |
| 532 | |
Pablo Neira Ayuso | 4a96300 | 2016-04-15 12:24:57 +0200 | [diff] [blame] | 533 | static inline size_t ctnetlink_proto_size(const struct nf_conn *ct) |
Holger Eitzenberger | 2732c4e | 2009-03-25 21:50:59 +0100 | [diff] [blame] | 534 | { |
| 535 | struct nf_conntrack_l3proto *l3proto; |
| 536 | struct nf_conntrack_l4proto *l4proto; |
Pablo Neira Ayuso | 03b64f5 | 2009-06-02 20:08:27 +0200 | [diff] [blame] | 537 | size_t len = 0; |
Holger Eitzenberger | 2732c4e | 2009-03-25 21:50:59 +0100 | [diff] [blame] | 538 | |
| 539 | rcu_read_lock(); |
Pablo Neira Ayuso | 03b64f5 | 2009-06-02 20:08:27 +0200 | [diff] [blame] | 540 | l3proto = __nf_ct_l3proto_find(nf_ct_l3num(ct)); |
Holger Eitzenberger | 2732c4e | 2009-03-25 21:50:59 +0100 | [diff] [blame] | 541 | len += l3proto->nla_size; |
| 542 | |
Pablo Neira Ayuso | 03b64f5 | 2009-06-02 20:08:27 +0200 | [diff] [blame] | 543 | 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] | 544 | len += l4proto->nla_size; |
| 545 | rcu_read_unlock(); |
| 546 | |
Pablo Neira Ayuso | 03b64f5 | 2009-06-02 20:08:27 +0200 | [diff] [blame] | 547 | return len; |
| 548 | } |
| 549 | |
Pablo Neira Ayuso | 4a96300 | 2016-04-15 12:24:57 +0200 | [diff] [blame] | 550 | static inline size_t ctnetlink_acct_size(const struct nf_conn *ct) |
Jiri Pirko | d26e6a0 | 2010-04-01 12:39:19 +0200 | [diff] [blame] | 551 | { |
| 552 | if (!nf_ct_ext_exist(ct, NF_CT_EXT_ACCT)) |
| 553 | return 0; |
| 554 | return 2 * nla_total_size(0) /* CTA_COUNTERS_ORIG|REPL */ |
Nicolas Dichtel | b46f6de | 2016-04-22 17:31:18 +0200 | [diff] [blame] | 555 | + 2 * nla_total_size_64bit(sizeof(uint64_t)) /* CTA_COUNTERS_PACKETS */ |
| 556 | + 2 * nla_total_size_64bit(sizeof(uint64_t)) /* CTA_COUNTERS_BYTES */ |
Jiri Pirko | d26e6a0 | 2010-04-01 12:39:19 +0200 | [diff] [blame] | 557 | ; |
| 558 | } |
| 559 | |
Pablo Neira Ayuso | 4a96300 | 2016-04-15 12:24:57 +0200 | [diff] [blame] | 560 | static inline int ctnetlink_secctx_size(const struct nf_conn *ct) |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 561 | { |
Pablo Neira Ayuso | cba85b5 | 2011-01-06 11:25:00 -0800 | [diff] [blame] | 562 | #ifdef CONFIG_NF_CONNTRACK_SECMARK |
| 563 | int len, ret; |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 564 | |
Pablo Neira Ayuso | cba85b5 | 2011-01-06 11:25:00 -0800 | [diff] [blame] | 565 | ret = security_secid_to_secctx(ct->secmark, NULL, &len); |
| 566 | if (ret) |
| 567 | return 0; |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 568 | |
Pablo Neira Ayuso | cba85b5 | 2011-01-06 11:25:00 -0800 | [diff] [blame] | 569 | return nla_total_size(0) /* CTA_SECCTX */ |
| 570 | + nla_total_size(sizeof(char) * len); /* CTA_SECCTX_NAME */ |
| 571 | #else |
| 572 | return 0; |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 573 | #endif |
Pablo Neira Ayuso | cba85b5 | 2011-01-06 11:25:00 -0800 | [diff] [blame] | 574 | } |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 575 | |
Pablo Neira Ayuso | 4a96300 | 2016-04-15 12:24:57 +0200 | [diff] [blame] | 576 | 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] | 577 | { |
| 578 | #ifdef CONFIG_NF_CONNTRACK_TIMESTAMP |
| 579 | if (!nf_ct_ext_exist(ct, NF_CT_EXT_TSTAMP)) |
| 580 | return 0; |
Nicolas Dichtel | b46f6de | 2016-04-22 17:31:18 +0200 | [diff] [blame] | 581 | 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] | 582 | #else |
| 583 | return 0; |
| 584 | #endif |
| 585 | } |
| 586 | |
Pablo Neira Ayuso | 4054ff4 | 2016-04-12 23:32:34 +0200 | [diff] [blame] | 587 | #ifdef CONFIG_NF_CONNTRACK_EVENTS |
| 588 | static size_t ctnetlink_nlmsg_size(const struct nf_conn *ct) |
Pablo Neira Ayuso | 03b64f5 | 2009-06-02 20:08:27 +0200 | [diff] [blame] | 589 | { |
| 590 | return NLMSG_ALIGN(sizeof(struct nfgenmsg)) |
| 591 | + 3 * nla_total_size(0) /* CTA_TUPLE_ORIG|REPL|MASTER */ |
| 592 | + 3 * nla_total_size(0) /* CTA_TUPLE_IP */ |
| 593 | + 3 * nla_total_size(0) /* CTA_TUPLE_PROTO */ |
| 594 | + 3 * nla_total_size(sizeof(u_int8_t)) /* CTA_PROTO_NUM */ |
| 595 | + nla_total_size(sizeof(u_int32_t)) /* CTA_ID */ |
| 596 | + nla_total_size(sizeof(u_int32_t)) /* CTA_STATUS */ |
Holger Eitzenberger | f7b13e4 | 2013-09-26 17:31:51 +0200 | [diff] [blame] | 597 | + ctnetlink_acct_size(ct) |
Pablo Neira Ayuso | a992ca2 | 2011-01-19 16:00:07 +0100 | [diff] [blame] | 598 | + ctnetlink_timestamp_size(ct) |
Pablo Neira Ayuso | 03b64f5 | 2009-06-02 20:08:27 +0200 | [diff] [blame] | 599 | + nla_total_size(sizeof(u_int32_t)) /* CTA_TIMEOUT */ |
| 600 | + nla_total_size(0) /* CTA_PROTOINFO */ |
| 601 | + nla_total_size(0) /* CTA_HELP */ |
| 602 | + nla_total_size(NF_CT_HELPER_NAME_LEN) /* CTA_HELP_NAME */ |
Pablo Neira Ayuso | cba85b5 | 2011-01-06 11:25:00 -0800 | [diff] [blame] | 603 | + ctnetlink_secctx_size(ct) |
Pablo Neira Ayuso | 03b64f5 | 2009-06-02 20:08:27 +0200 | [diff] [blame] | 604 | #ifdef CONFIG_NF_NAT_NEEDED |
| 605 | + 2 * nla_total_size(0) /* CTA_NAT_SEQ_ADJ_ORIG|REPL */ |
| 606 | + 6 * nla_total_size(sizeof(u_int32_t)) /* CTA_NAT_SEQ_OFFSET */ |
| 607 | #endif |
| 608 | #ifdef CONFIG_NF_CONNTRACK_MARK |
| 609 | + nla_total_size(sizeof(u_int32_t)) /* CTA_MARK */ |
| 610 | #endif |
Ken-ichirou MATSUZAWA | 4a00106 | 2014-06-16 13:52:34 +0200 | [diff] [blame] | 611 | #ifdef CONFIG_NF_CONNTRACK_ZONES |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 612 | + 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] | 613 | #endif |
Pablo Neira Ayuso | 03b64f5 | 2009-06-02 20:08:27 +0200 | [diff] [blame] | 614 | + ctnetlink_proto_size(ct) |
Florian Westphal | 0ceabd8 | 2013-01-11 06:30:45 +0000 | [diff] [blame] | 615 | + ctnetlink_label_size(ct) |
Pablo Neira Ayuso | 03b64f5 | 2009-06-02 20:08:27 +0200 | [diff] [blame] | 616 | ; |
Holger Eitzenberger | 2732c4e | 2009-03-25 21:50:59 +0100 | [diff] [blame] | 617 | } |
| 618 | |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 619 | static int |
| 620 | ctnetlink_conntrack_event(unsigned int events, struct nf_ct_event *item) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 621 | { |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 622 | const struct nf_conntrack_zone *zone; |
Alexey Dobriyan | 9592a5c | 2010-01-13 16:04:18 +0100 | [diff] [blame] | 623 | struct net *net; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 624 | struct nlmsghdr *nlh; |
| 625 | struct nfgenmsg *nfmsg; |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 626 | struct nlattr *nest_parms; |
Pablo Neira Ayuso | 19abb7b | 2008-11-18 11:56:20 +0100 | [diff] [blame] | 627 | struct nf_conn *ct = item->ct; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 628 | struct sk_buff *skb; |
| 629 | unsigned int type; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 630 | unsigned int flags = 0, group; |
Pablo Neira Ayuso | dd7669a | 2009-06-13 12:30:52 +0200 | [diff] [blame] | 631 | int err; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 632 | |
| 633 | /* ignore our fake conntrack entry */ |
Eric Dumazet | 5bfddbd | 2010-06-08 16:09:52 +0200 | [diff] [blame] | 634 | if (nf_ct_is_untracked(ct)) |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 635 | return 0; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 636 | |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 637 | if (events & (1 << IPCT_DESTROY)) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 638 | type = IPCTNL_MSG_CT_DELETE; |
| 639 | group = NFNLGRP_CONNTRACK_DESTROY; |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 640 | } else if (events & ((1 << IPCT_NEW) | (1 << IPCT_RELATED))) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 641 | type = IPCTNL_MSG_CT_NEW; |
| 642 | flags = NLM_F_CREATE|NLM_F_EXCL; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 643 | group = NFNLGRP_CONNTRACK_NEW; |
Pablo Neira Ayuso | 17e6e4e | 2009-06-02 20:08:46 +0200 | [diff] [blame] | 644 | } else if (events) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 645 | type = IPCTNL_MSG_CT_NEW; |
| 646 | group = NFNLGRP_CONNTRACK_UPDATE; |
| 647 | } else |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 648 | return 0; |
Patrick McHardy | a242769 | 2006-03-20 18:03:59 -0800 | [diff] [blame] | 649 | |
Alexey Dobriyan | 9592a5c | 2010-01-13 16:04:18 +0100 | [diff] [blame] | 650 | net = nf_ct_net(ct); |
| 651 | if (!item->report && !nfnetlink_has_listeners(net, group)) |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 652 | return 0; |
Patrick McHardy | a242769 | 2006-03-20 18:03:59 -0800 | [diff] [blame] | 653 | |
Pablo Neira Ayuso | 03b64f5 | 2009-06-02 20:08:27 +0200 | [diff] [blame] | 654 | skb = nlmsg_new(ctnetlink_nlmsg_size(ct), GFP_ATOMIC); |
| 655 | if (skb == NULL) |
Pablo Neira Ayuso | 150ace0 | 2009-04-17 17:47:31 +0200 | [diff] [blame] | 656 | goto errout; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 657 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 658 | type |= NFNL_SUBSYS_CTNETLINK << 8; |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 659 | nlh = nlmsg_put(skb, item->portid, 0, type, sizeof(*nfmsg), flags); |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 660 | if (nlh == NULL) |
| 661 | goto nlmsg_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 662 | |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 663 | nfmsg = nlmsg_data(nlh); |
Patrick McHardy | 5e8fbe2 | 2008-04-14 11:15:52 +0200 | [diff] [blame] | 664 | nfmsg->nfgen_family = nf_ct_l3num(ct); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 665 | nfmsg->version = NFNETLINK_V0; |
| 666 | nfmsg->res_id = 0; |
| 667 | |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 668 | rcu_read_lock(); |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 669 | zone = nf_ct_zone(ct); |
| 670 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 671 | nest_parms = nla_nest_start(skb, CTA_TUPLE_ORIG | NLA_F_NESTED); |
| 672 | if (!nest_parms) |
| 673 | goto nla_put_failure; |
Pablo Neira Ayuso | f2f3e38 | 2009-06-02 20:03:35 +0200 | [diff] [blame] | 674 | 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] | 675 | goto nla_put_failure; |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 676 | if (ctnetlink_dump_zone_id(skb, CTA_TUPLE_ZONE, zone, |
| 677 | NF_CT_ZONE_DIR_ORIG) < 0) |
| 678 | goto nla_put_failure; |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 679 | nla_nest_end(skb, nest_parms); |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 680 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 681 | nest_parms = nla_nest_start(skb, CTA_TUPLE_REPLY | NLA_F_NESTED); |
| 682 | if (!nest_parms) |
| 683 | goto nla_put_failure; |
Pablo Neira Ayuso | f2f3e38 | 2009-06-02 20:03:35 +0200 | [diff] [blame] | 684 | 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] | 685 | goto nla_put_failure; |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 686 | if (ctnetlink_dump_zone_id(skb, CTA_TUPLE_ZONE, zone, |
| 687 | NF_CT_ZONE_DIR_REPL) < 0) |
| 688 | goto nla_put_failure; |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 689 | nla_nest_end(skb, nest_parms); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 690 | |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 691 | if (ctnetlink_dump_zone_id(skb, CTA_ZONE, zone, |
| 692 | NF_CT_DEFAULT_ZONE_DIR) < 0) |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 693 | goto nla_put_failure; |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 694 | |
Eric Leblond | 1eedf69 | 2008-05-13 23:27:11 -0700 | [diff] [blame] | 695 | if (ctnetlink_dump_id(skb, ct) < 0) |
| 696 | goto nla_put_failure; |
| 697 | |
Fabian Hugelshofer | e57dce6 | 2008-06-09 15:59:58 -0700 | [diff] [blame] | 698 | if (ctnetlink_dump_status(skb, ct) < 0) |
| 699 | goto nla_put_failure; |
| 700 | |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 701 | if (events & (1 << IPCT_DESTROY)) { |
Holger Eitzenberger | 4542fa4 | 2013-09-26 17:31:52 +0200 | [diff] [blame] | 702 | if (ctnetlink_dump_acct(skb, ct, type) < 0 || |
Pablo Neira Ayuso | a992ca2 | 2011-01-19 16:00:07 +0100 | [diff] [blame] | 703 | ctnetlink_dump_timestamp(skb, ct) < 0) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 704 | goto nla_put_failure; |
Pablo Neira Ayuso | 7b621c1 | 2006-11-29 02:35:32 +0100 | [diff] [blame] | 705 | } else { |
Pablo Neira Ayuso | 7b621c1 | 2006-11-29 02:35:32 +0100 | [diff] [blame] | 706 | if (ctnetlink_dump_timeout(skb, ct) < 0) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 707 | goto nla_put_failure; |
Pablo Neira Ayuso | 7b621c1 | 2006-11-29 02:35:32 +0100 | [diff] [blame] | 708 | |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 709 | if (events & (1 << IPCT_PROTOINFO) |
Pablo Neira Ayuso | 7b621c1 | 2006-11-29 02:35:32 +0100 | [diff] [blame] | 710 | && ctnetlink_dump_protoinfo(skb, ct) < 0) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 711 | goto nla_put_failure; |
Pablo Neira Ayuso | 7b621c1 | 2006-11-29 02:35:32 +0100 | [diff] [blame] | 712 | |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 713 | if ((events & (1 << IPCT_HELPER) || nfct_help(ct)) |
Pablo Neira Ayuso | 7b621c1 | 2006-11-29 02:35:32 +0100 | [diff] [blame] | 714 | && ctnetlink_dump_helpinfo(skb, ct) < 0) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 715 | goto nla_put_failure; |
Pablo Neira Ayuso | 7b621c1 | 2006-11-29 02:35:32 +0100 | [diff] [blame] | 716 | |
Eric Paris | ff660c8 | 2010-10-19 18:17:32 -0400 | [diff] [blame] | 717 | #ifdef CONFIG_NF_CONNTRACK_SECMARK |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 718 | if ((events & (1 << IPCT_SECMARK) || ct->secmark) |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 719 | && ctnetlink_dump_secctx(skb, ct) < 0) |
Pablo Neira Ayuso | 37fccd8 | 2007-12-17 22:28:41 -0800 | [diff] [blame] | 720 | goto nla_put_failure; |
Eric Paris | ff660c8 | 2010-10-19 18:17:32 -0400 | [diff] [blame] | 721 | #endif |
Florian Westphal | 0ceabd8 | 2013-01-11 06:30:45 +0000 | [diff] [blame] | 722 | if (events & (1 << IPCT_LABEL) && |
| 723 | ctnetlink_dump_labels(skb, ct) < 0) |
| 724 | goto nla_put_failure; |
Pablo Neira Ayuso | 7b621c1 | 2006-11-29 02:35:32 +0100 | [diff] [blame] | 725 | |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 726 | if (events & (1 << IPCT_RELATED) && |
Pablo Neira Ayuso | 0f417ce | 2007-12-17 22:28:19 -0800 | [diff] [blame] | 727 | ctnetlink_dump_master(skb, ct) < 0) |
| 728 | goto nla_put_failure; |
| 729 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 730 | if (events & (1 << IPCT_SEQADJ) && |
| 731 | ctnetlink_dump_ct_seq_adj(skb, ct) < 0) |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 732 | goto nla_put_failure; |
Pablo Neira Ayuso | 7b621c1 | 2006-11-29 02:35:32 +0100 | [diff] [blame] | 733 | } |
Pablo Neira Ayuso | b9a37e0 | 2006-08-22 00:31:49 -0700 | [diff] [blame] | 734 | |
Eric Leblond | a83099a | 2008-01-31 04:44:27 -0800 | [diff] [blame] | 735 | #ifdef CONFIG_NF_CONNTRACK_MARK |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 736 | if ((events & (1 << IPCT_MARK) || ct->mark) |
Eric Leblond | a83099a | 2008-01-31 04:44:27 -0800 | [diff] [blame] | 737 | && ctnetlink_dump_mark(skb, ct) < 0) |
| 738 | goto nla_put_failure; |
| 739 | #endif |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 740 | rcu_read_unlock(); |
Eric Leblond | a83099a | 2008-01-31 04:44:27 -0800 | [diff] [blame] | 741 | |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 742 | nlmsg_end(skb, nlh); |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 743 | err = nfnetlink_send(skb, net, item->portid, group, item->report, |
Alexey Dobriyan | cd8c20b | 2010-01-13 16:02:14 +0100 | [diff] [blame] | 744 | GFP_ATOMIC); |
Pablo Neira Ayuso | dd7669a | 2009-06-13 12:30:52 +0200 | [diff] [blame] | 745 | if (err == -ENOBUFS || err == -EAGAIN) |
| 746 | return -ENOBUFS; |
| 747 | |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 748 | return 0; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 749 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 750 | nla_put_failure: |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 751 | rcu_read_unlock(); |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 752 | nlmsg_cancel(skb, nlh); |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 753 | nlmsg_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 754 | kfree_skb(skb); |
Pablo Neira Ayuso | 150ace0 | 2009-04-17 17:47:31 +0200 | [diff] [blame] | 755 | errout: |
Pablo Neira Ayuso | 37b7ef7 | 2010-03-16 13:30:21 +0000 | [diff] [blame] | 756 | if (nfnetlink_set_err(net, 0, group, -ENOBUFS) > 0) |
| 757 | return -ENOBUFS; |
| 758 | |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 759 | return 0; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 760 | } |
| 761 | #endif /* CONFIG_NF_CONNTRACK_EVENTS */ |
| 762 | |
| 763 | static int ctnetlink_done(struct netlink_callback *cb) |
| 764 | { |
Patrick McHardy | 89f2e21 | 2006-05-29 18:24:58 -0700 | [diff] [blame] | 765 | if (cb->args[1]) |
| 766 | nf_ct_put((struct nf_conn *)cb->args[1]); |
Fabian Frederick | 397304b | 2014-06-20 22:38:58 +0200 | [diff] [blame] | 767 | kfree(cb->data); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 768 | return 0; |
| 769 | } |
| 770 | |
Kristian Evensen | 866476f | 2014-12-24 09:57:10 +0100 | [diff] [blame] | 771 | struct ctnetlink_filter { |
Pablo Neira Ayuso | 0f298a2 | 2012-02-24 14:41:50 +0000 | [diff] [blame] | 772 | struct { |
| 773 | u_int32_t val; |
| 774 | u_int32_t mask; |
| 775 | } mark; |
| 776 | }; |
| 777 | |
Kristian Evensen | 866476f | 2014-12-24 09:57:10 +0100 | [diff] [blame] | 778 | static struct ctnetlink_filter * |
| 779 | ctnetlink_alloc_filter(const struct nlattr * const cda[]) |
| 780 | { |
| 781 | #ifdef CONFIG_NF_CONNTRACK_MARK |
| 782 | struct ctnetlink_filter *filter; |
| 783 | |
| 784 | filter = kzalloc(sizeof(*filter), GFP_KERNEL); |
| 785 | if (filter == NULL) |
| 786 | return ERR_PTR(-ENOMEM); |
| 787 | |
| 788 | filter->mark.val = ntohl(nla_get_be32(cda[CTA_MARK])); |
| 789 | filter->mark.mask = ntohl(nla_get_be32(cda[CTA_MARK_MASK])); |
| 790 | |
| 791 | return filter; |
| 792 | #else |
| 793 | return ERR_PTR(-EOPNOTSUPP); |
| 794 | #endif |
| 795 | } |
| 796 | |
| 797 | static int ctnetlink_filter_match(struct nf_conn *ct, void *data) |
| 798 | { |
| 799 | struct ctnetlink_filter *filter = data; |
| 800 | |
| 801 | if (filter == NULL) |
| 802 | return 1; |
| 803 | |
| 804 | #ifdef CONFIG_NF_CONNTRACK_MARK |
| 805 | if ((ct->mark & filter->mark.mask) == filter->mark.val) |
| 806 | return 1; |
| 807 | #endif |
| 808 | |
| 809 | return 0; |
| 810 | } |
| 811 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 812 | static int |
| 813 | ctnetlink_dump_table(struct sk_buff *skb, struct netlink_callback *cb) |
| 814 | { |
Alexey Dobriyan | 9592a5c | 2010-01-13 16:04:18 +0100 | [diff] [blame] | 815 | struct net *net = sock_net(skb->sk); |
Patrick McHardy | 89f2e21 | 2006-05-29 18:24:58 -0700 | [diff] [blame] | 816 | struct nf_conn *ct, *last; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 817 | struct nf_conntrack_tuple_hash *h; |
Eric Dumazet | ea781f1 | 2009-03-25 21:05:46 +0100 | [diff] [blame] | 818 | struct hlist_nulls_node *n; |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 819 | struct nfgenmsg *nfmsg = nlmsg_data(cb->nlh); |
Pablo Neira Ayuso | 87711cb | 2006-01-05 12:19:23 -0800 | [diff] [blame] | 820 | u_int8_t l3proto = nfmsg->nfgen_family; |
Hans Schillstrom | 3b988ec | 2012-03-05 02:24:29 +0000 | [diff] [blame] | 821 | int res; |
Jesper Dangaard Brouer | 93bb0ce | 2014-03-03 14:46:13 +0100 | [diff] [blame] | 822 | spinlock_t *lockp; |
| 823 | |
Patrick McHardy | d205dc4 | 2006-08-17 18:12:38 -0700 | [diff] [blame] | 824 | last = (struct nf_conn *)cb->args[1]; |
Jesper Dangaard Brouer | 93bb0ce | 2014-03-03 14:46:13 +0100 | [diff] [blame] | 825 | |
| 826 | local_bh_disable(); |
Florian Westphal | 56d52d4 | 2016-05-02 18:39:55 +0200 | [diff] [blame] | 827 | for (; cb->args[0] < nf_conntrack_htable_size; cb->args[0]++) { |
Patrick McHardy | 89f2e21 | 2006-05-29 18:24:58 -0700 | [diff] [blame] | 828 | restart: |
Jesper Dangaard Brouer | 93bb0ce | 2014-03-03 14:46:13 +0100 | [diff] [blame] | 829 | lockp = &nf_conntrack_locks[cb->args[0] % CONNTRACK_LOCKS]; |
Sasha Levin | b16c291 | 2016-01-18 19:23:51 -0500 | [diff] [blame] | 830 | nf_conntrack_lock(lockp); |
Florian Westphal | 56d52d4 | 2016-05-02 18:39:55 +0200 | [diff] [blame] | 831 | if (cb->args[0] >= nf_conntrack_htable_size) { |
Jesper Dangaard Brouer | 93bb0ce | 2014-03-03 14:46:13 +0100 | [diff] [blame] | 832 | spin_unlock(lockp); |
| 833 | goto out; |
| 834 | } |
Florian Westphal | 56d52d4 | 2016-05-02 18:39:55 +0200 | [diff] [blame] | 835 | hlist_nulls_for_each_entry(h, n, &nf_conntrack_hash[cb->args[0]], |
| 836 | hnnode) { |
Jozsef Kadlecsik | 5b1158e | 2006-12-02 22:07:13 -0800 | [diff] [blame] | 837 | if (NF_CT_DIRECTION(h) != IP_CT_DIR_ORIGINAL) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 838 | continue; |
| 839 | ct = nf_ct_tuplehash_to_ctrack(h); |
Florian Westphal | e0c7d47 | 2016-04-28 19:13:45 +0200 | [diff] [blame] | 840 | if (!net_eq(net, nf_ct_net(ct))) |
| 841 | continue; |
| 842 | |
Pablo Neira Ayuso | 87711cb | 2006-01-05 12:19:23 -0800 | [diff] [blame] | 843 | /* Dump entries of a given L3 protocol number. |
| 844 | * If it is not specified, ie. l3proto == 0, |
| 845 | * then dump everything. */ |
Patrick McHardy | 5e8fbe2 | 2008-04-14 11:15:52 +0200 | [diff] [blame] | 846 | if (l3proto && nf_ct_l3num(ct) != l3proto) |
Stephen Hemminger | 13ee6ac | 2011-01-11 23:54:42 +0100 | [diff] [blame] | 847 | continue; |
Patrick McHardy | d205dc4 | 2006-08-17 18:12:38 -0700 | [diff] [blame] | 848 | if (cb->args[1]) { |
| 849 | if (ct != last) |
Stephen Hemminger | 13ee6ac | 2011-01-11 23:54:42 +0100 | [diff] [blame] | 850 | continue; |
Patrick McHardy | d205dc4 | 2006-08-17 18:12:38 -0700 | [diff] [blame] | 851 | cb->args[1] = 0; |
Patrick McHardy | 89f2e21 | 2006-05-29 18:24:58 -0700 | [diff] [blame] | 852 | } |
Kristian Evensen | 866476f | 2014-12-24 09:57:10 +0100 | [diff] [blame] | 853 | if (!ctnetlink_filter_match(ct, cb->data)) |
Pablo Neira Ayuso | 0f298a2 | 2012-02-24 14:41:50 +0000 | [diff] [blame] | 854 | continue; |
Kristian Evensen | 866476f | 2014-12-24 09:57:10 +0100 | [diff] [blame] | 855 | |
Hans Schillstrom | 3b988ec | 2012-03-05 02:24:29 +0000 | [diff] [blame] | 856 | rcu_read_lock(); |
| 857 | res = |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 858 | ctnetlink_fill_info(skb, NETLINK_CB(cb->skb).portid, |
Hans Schillstrom | 3b988ec | 2012-03-05 02:24:29 +0000 | [diff] [blame] | 859 | cb->nlh->nlmsg_seq, |
| 860 | NFNL_MSG_TYPE(cb->nlh->nlmsg_type), |
| 861 | ct); |
| 862 | rcu_read_unlock(); |
| 863 | if (res < 0) { |
Pablo Neira Ayuso | c71caf4 | 2011-01-24 19:01:07 +0100 | [diff] [blame] | 864 | nf_conntrack_get(&ct->ct_general); |
Patrick McHardy | 89f2e21 | 2006-05-29 18:24:58 -0700 | [diff] [blame] | 865 | cb->args[1] = (unsigned long)ct; |
Jesper Dangaard Brouer | 93bb0ce | 2014-03-03 14:46:13 +0100 | [diff] [blame] | 866 | spin_unlock(lockp); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 867 | goto out; |
Patrick McHardy | 89f2e21 | 2006-05-29 18:24:58 -0700 | [diff] [blame] | 868 | } |
| 869 | } |
Jesper Dangaard Brouer | 93bb0ce | 2014-03-03 14:46:13 +0100 | [diff] [blame] | 870 | spin_unlock(lockp); |
Patrick McHardy | d205dc4 | 2006-08-17 18:12:38 -0700 | [diff] [blame] | 871 | if (cb->args[1]) { |
Patrick McHardy | 89f2e21 | 2006-05-29 18:24:58 -0700 | [diff] [blame] | 872 | cb->args[1] = 0; |
| 873 | goto restart; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 874 | } |
| 875 | } |
Patrick McHardy | 89f2e21 | 2006-05-29 18:24:58 -0700 | [diff] [blame] | 876 | out: |
Jesper Dangaard Brouer | 93bb0ce | 2014-03-03 14:46:13 +0100 | [diff] [blame] | 877 | local_bh_enable(); |
Patrick McHardy | d205dc4 | 2006-08-17 18:12:38 -0700 | [diff] [blame] | 878 | if (last) |
| 879 | nf_ct_put(last); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 880 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 881 | return skb->len; |
| 882 | } |
| 883 | |
Pablo Neira Ayuso | 4054ff4 | 2016-04-12 23:32:34 +0200 | [diff] [blame] | 884 | static int ctnetlink_parse_tuple_ip(struct nlattr *attr, |
| 885 | struct nf_conntrack_tuple *tuple) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 886 | { |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 887 | struct nlattr *tb[CTA_IP_MAX+1]; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 888 | struct nf_conntrack_l3proto *l3proto; |
| 889 | int ret = 0; |
| 890 | |
Daniel Borkmann | 130ffbc | 2013-06-12 17:54:51 +0200 | [diff] [blame] | 891 | ret = nla_parse_nested(tb, CTA_IP_MAX, attr, NULL); |
| 892 | if (ret < 0) |
| 893 | return ret; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 894 | |
Florian Westphal | cd91566 | 2009-03-18 17:28:37 +0100 | [diff] [blame] | 895 | rcu_read_lock(); |
| 896 | l3proto = __nf_ct_l3proto_find(tuple->src.l3num); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 897 | |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 898 | if (likely(l3proto->nlattr_to_tuple)) { |
| 899 | ret = nla_validate_nested(attr, CTA_IP_MAX, |
| 900 | l3proto->nla_policy); |
| 901 | if (ret == 0) |
| 902 | ret = l3proto->nlattr_to_tuple(tb, tuple); |
| 903 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 904 | |
Florian Westphal | cd91566 | 2009-03-18 17:28:37 +0100 | [diff] [blame] | 905 | rcu_read_unlock(); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 906 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 907 | return ret; |
| 908 | } |
| 909 | |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 910 | static const struct nla_policy proto_nla_policy[CTA_PROTO_MAX+1] = { |
| 911 | [CTA_PROTO_NUM] = { .type = NLA_U8 }, |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 912 | }; |
| 913 | |
Pablo Neira Ayuso | 4054ff4 | 2016-04-12 23:32:34 +0200 | [diff] [blame] | 914 | static int ctnetlink_parse_tuple_proto(struct nlattr *attr, |
| 915 | struct nf_conntrack_tuple *tuple) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 916 | { |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 917 | struct nlattr *tb[CTA_PROTO_MAX+1]; |
Martin Josefsson | 605dcad | 2006-11-29 02:35:06 +0100 | [diff] [blame] | 918 | struct nf_conntrack_l4proto *l4proto; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 919 | int ret = 0; |
| 920 | |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 921 | ret = nla_parse_nested(tb, CTA_PROTO_MAX, attr, proto_nla_policy); |
| 922 | if (ret < 0) |
| 923 | return ret; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 924 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 925 | if (!tb[CTA_PROTO_NUM]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 926 | return -EINVAL; |
Patrick McHardy | 77236b6 | 2007-12-17 22:29:45 -0800 | [diff] [blame] | 927 | tuple->dst.protonum = nla_get_u8(tb[CTA_PROTO_NUM]); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 928 | |
Florian Westphal | cd91566 | 2009-03-18 17:28:37 +0100 | [diff] [blame] | 929 | rcu_read_lock(); |
| 930 | l4proto = __nf_ct_l4proto_find(tuple->src.l3num, tuple->dst.protonum); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 931 | |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 932 | if (likely(l4proto->nlattr_to_tuple)) { |
| 933 | ret = nla_validate_nested(attr, CTA_PROTO_MAX, |
| 934 | l4proto->nla_policy); |
| 935 | if (ret == 0) |
| 936 | ret = l4proto->nlattr_to_tuple(tb, tuple); |
| 937 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 938 | |
Florian Westphal | cd91566 | 2009-03-18 17:28:37 +0100 | [diff] [blame] | 939 | rcu_read_unlock(); |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 940 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 941 | return ret; |
| 942 | } |
| 943 | |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 944 | static int |
| 945 | ctnetlink_parse_zone(const struct nlattr *attr, |
| 946 | struct nf_conntrack_zone *zone) |
| 947 | { |
Daniel Borkmann | 5e8018f | 2015-08-14 16:03:40 +0200 | [diff] [blame] | 948 | nf_ct_zone_init(zone, NF_CT_DEFAULT_ZONE_ID, |
| 949 | NF_CT_DEFAULT_ZONE_DIR, 0); |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 950 | #ifdef CONFIG_NF_CONNTRACK_ZONES |
| 951 | if (attr) |
| 952 | zone->id = ntohs(nla_get_be16(attr)); |
| 953 | #else |
| 954 | if (attr) |
| 955 | return -EOPNOTSUPP; |
| 956 | #endif |
| 957 | return 0; |
| 958 | } |
| 959 | |
| 960 | static int |
| 961 | ctnetlink_parse_tuple_zone(struct nlattr *attr, enum ctattr_type type, |
| 962 | struct nf_conntrack_zone *zone) |
| 963 | { |
| 964 | int ret; |
| 965 | |
| 966 | if (zone->id != NF_CT_DEFAULT_ZONE_ID) |
| 967 | return -EINVAL; |
| 968 | |
| 969 | ret = ctnetlink_parse_zone(attr, zone); |
| 970 | if (ret < 0) |
| 971 | return ret; |
| 972 | |
| 973 | if (type == CTA_TUPLE_REPLY) |
| 974 | zone->dir = NF_CT_ZONE_DIR_REPL; |
| 975 | else |
| 976 | zone->dir = NF_CT_ZONE_DIR_ORIG; |
| 977 | |
| 978 | return 0; |
| 979 | } |
| 980 | |
Patrick McHardy | d0b0268 | 2010-02-10 15:38:33 +0100 | [diff] [blame] | 981 | static const struct nla_policy tuple_nla_policy[CTA_TUPLE_MAX+1] = { |
| 982 | [CTA_TUPLE_IP] = { .type = NLA_NESTED }, |
| 983 | [CTA_TUPLE_PROTO] = { .type = NLA_NESTED }, |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 984 | [CTA_TUPLE_ZONE] = { .type = NLA_U16 }, |
Patrick McHardy | d0b0268 | 2010-02-10 15:38:33 +0100 | [diff] [blame] | 985 | }; |
| 986 | |
Ilpo Järvinen | bb5cf80 | 2008-01-05 23:11:31 -0800 | [diff] [blame] | 987 | static int |
Patrick McHardy | 3993832 | 2009-08-25 16:07:58 +0200 | [diff] [blame] | 988 | ctnetlink_parse_tuple(const struct nlattr * const cda[], |
| 989 | struct nf_conntrack_tuple *tuple, |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 990 | enum ctattr_type type, u_int8_t l3num, |
| 991 | struct nf_conntrack_zone *zone) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 992 | { |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 993 | struct nlattr *tb[CTA_TUPLE_MAX+1]; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 994 | int err; |
| 995 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 996 | memset(tuple, 0, sizeof(*tuple)); |
| 997 | |
Daniel Borkmann | 130ffbc | 2013-06-12 17:54:51 +0200 | [diff] [blame] | 998 | err = nla_parse_nested(tb, CTA_TUPLE_MAX, cda[type], tuple_nla_policy); |
| 999 | if (err < 0) |
| 1000 | return err; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1001 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1002 | if (!tb[CTA_TUPLE_IP]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1003 | return -EINVAL; |
| 1004 | |
| 1005 | tuple->src.l3num = l3num; |
| 1006 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1007 | err = ctnetlink_parse_tuple_ip(tb[CTA_TUPLE_IP], tuple); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1008 | if (err < 0) |
| 1009 | return err; |
| 1010 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1011 | if (!tb[CTA_TUPLE_PROTO]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1012 | return -EINVAL; |
| 1013 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1014 | err = ctnetlink_parse_tuple_proto(tb[CTA_TUPLE_PROTO], tuple); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1015 | if (err < 0) |
| 1016 | return err; |
| 1017 | |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 1018 | if (tb[CTA_TUPLE_ZONE]) { |
| 1019 | if (!zone) |
| 1020 | return -EINVAL; |
| 1021 | |
| 1022 | err = ctnetlink_parse_tuple_zone(tb[CTA_TUPLE_ZONE], |
| 1023 | type, zone); |
| 1024 | if (err < 0) |
| 1025 | return err; |
| 1026 | } |
| 1027 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1028 | /* orig and expect tuples get DIR_ORIGINAL */ |
| 1029 | if (type == CTA_TUPLE_REPLY) |
| 1030 | tuple->dst.dir = IP_CT_DIR_REPLY; |
| 1031 | else |
| 1032 | tuple->dst.dir = IP_CT_DIR_ORIGINAL; |
| 1033 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1034 | return 0; |
| 1035 | } |
| 1036 | |
Patrick McHardy | d0b0268 | 2010-02-10 15:38:33 +0100 | [diff] [blame] | 1037 | static const struct nla_policy help_nla_policy[CTA_HELP_MAX+1] = { |
Florian Westphal | 6d1fafc | 2012-11-22 01:32:46 +0000 | [diff] [blame] | 1038 | [CTA_HELP_NAME] = { .type = NLA_NUL_STRING, |
| 1039 | .len = NF_CT_HELPER_NAME_LEN - 1 }, |
Patrick McHardy | d0b0268 | 2010-02-10 15:38:33 +0100 | [diff] [blame] | 1040 | }; |
| 1041 | |
Pablo Neira Ayuso | 4054ff4 | 2016-04-12 23:32:34 +0200 | [diff] [blame] | 1042 | static int ctnetlink_parse_help(const struct nlattr *attr, char **helper_name, |
| 1043 | struct nlattr **helpinfo) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1044 | { |
Daniel Borkmann | 130ffbc | 2013-06-12 17:54:51 +0200 | [diff] [blame] | 1045 | int err; |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1046 | struct nlattr *tb[CTA_HELP_MAX+1]; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1047 | |
Daniel Borkmann | 130ffbc | 2013-06-12 17:54:51 +0200 | [diff] [blame] | 1048 | err = nla_parse_nested(tb, CTA_HELP_MAX, attr, help_nla_policy); |
| 1049 | if (err < 0) |
| 1050 | return err; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1051 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1052 | if (!tb[CTA_HELP_NAME]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1053 | return -EINVAL; |
| 1054 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1055 | *helper_name = nla_data(tb[CTA_HELP_NAME]); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1056 | |
Pablo Neira Ayuso | ae243be | 2012-06-07 14:19:42 +0200 | [diff] [blame] | 1057 | if (tb[CTA_HELP_INFO]) |
| 1058 | *helpinfo = tb[CTA_HELP_INFO]; |
| 1059 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1060 | return 0; |
| 1061 | } |
| 1062 | |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 1063 | static const struct nla_policy ct_nla_policy[CTA_MAX+1] = { |
Patrick McHardy | d0b0268 | 2010-02-10 15:38:33 +0100 | [diff] [blame] | 1064 | [CTA_TUPLE_ORIG] = { .type = NLA_NESTED }, |
| 1065 | [CTA_TUPLE_REPLY] = { .type = NLA_NESTED }, |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 1066 | [CTA_STATUS] = { .type = NLA_U32 }, |
Patrick McHardy | d0b0268 | 2010-02-10 15:38:33 +0100 | [diff] [blame] | 1067 | [CTA_PROTOINFO] = { .type = NLA_NESTED }, |
| 1068 | [CTA_HELP] = { .type = NLA_NESTED }, |
| 1069 | [CTA_NAT_SRC] = { .type = NLA_NESTED }, |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 1070 | [CTA_TIMEOUT] = { .type = NLA_U32 }, |
| 1071 | [CTA_MARK] = { .type = NLA_U32 }, |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 1072 | [CTA_ID] = { .type = NLA_U32 }, |
Patrick McHardy | d0b0268 | 2010-02-10 15:38:33 +0100 | [diff] [blame] | 1073 | [CTA_NAT_DST] = { .type = NLA_NESTED }, |
| 1074 | [CTA_TUPLE_MASTER] = { .type = NLA_NESTED }, |
Florian Westphal | 6d1fafc | 2012-11-22 01:32:46 +0000 | [diff] [blame] | 1075 | [CTA_NAT_SEQ_ADJ_ORIG] = { .type = NLA_NESTED }, |
| 1076 | [CTA_NAT_SEQ_ADJ_REPLY] = { .type = NLA_NESTED }, |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 1077 | [CTA_ZONE] = { .type = NLA_U16 }, |
Pablo Neira Ayuso | 0f298a2 | 2012-02-24 14:41:50 +0000 | [diff] [blame] | 1078 | [CTA_MARK_MASK] = { .type = NLA_U32 }, |
Florian Westphal | 9b21f6a | 2013-01-11 06:30:46 +0000 | [diff] [blame] | 1079 | [CTA_LABELS] = { .type = NLA_BINARY, |
Florian Westphal | d2bf2f3 | 2014-02-18 15:25:32 +0100 | [diff] [blame] | 1080 | .len = NF_CT_LABELS_MAX_SIZE }, |
Florian Westphal | 9b21f6a | 2013-01-11 06:30:46 +0000 | [diff] [blame] | 1081 | [CTA_LABELS_MASK] = { .type = NLA_BINARY, |
Florian Westphal | d2bf2f3 | 2014-02-18 15:25:32 +0100 | [diff] [blame] | 1082 | .len = NF_CT_LABELS_MAX_SIZE }, |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1083 | }; |
| 1084 | |
Kristian Evensen | 866476f | 2014-12-24 09:57:10 +0100 | [diff] [blame] | 1085 | static int ctnetlink_flush_conntrack(struct net *net, |
| 1086 | const struct nlattr * const cda[], |
| 1087 | u32 portid, int report) |
| 1088 | { |
| 1089 | struct ctnetlink_filter *filter = NULL; |
| 1090 | |
| 1091 | if (cda[CTA_MARK] && cda[CTA_MARK_MASK]) { |
| 1092 | filter = ctnetlink_alloc_filter(cda); |
| 1093 | if (IS_ERR(filter)) |
| 1094 | return PTR_ERR(filter); |
| 1095 | } |
| 1096 | |
| 1097 | nf_ct_iterate_cleanup(net, ctnetlink_filter_match, filter, |
| 1098 | portid, report); |
| 1099 | kfree(filter); |
| 1100 | |
| 1101 | return 0; |
| 1102 | } |
| 1103 | |
Pablo Neira Ayuso | 7b8002a | 2015-12-15 18:41:56 +0100 | [diff] [blame] | 1104 | static int ctnetlink_del_conntrack(struct net *net, struct sock *ctnl, |
| 1105 | struct sk_buff *skb, |
| 1106 | const struct nlmsghdr *nlh, |
| 1107 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1108 | { |
| 1109 | struct nf_conntrack_tuple_hash *h; |
| 1110 | struct nf_conntrack_tuple tuple; |
| 1111 | struct nf_conn *ct; |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 1112 | struct nfgenmsg *nfmsg = nlmsg_data(nlh); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1113 | u_int8_t u3 = nfmsg->nfgen_family; |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 1114 | struct nf_conntrack_zone zone; |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 1115 | int err; |
| 1116 | |
| 1117 | err = ctnetlink_parse_zone(cda[CTA_ZONE], &zone); |
| 1118 | if (err < 0) |
| 1119 | return err; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1120 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1121 | if (cda[CTA_TUPLE_ORIG]) |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 1122 | err = ctnetlink_parse_tuple(cda, &tuple, CTA_TUPLE_ORIG, |
| 1123 | u3, &zone); |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1124 | else if (cda[CTA_TUPLE_REPLY]) |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 1125 | err = ctnetlink_parse_tuple(cda, &tuple, CTA_TUPLE_REPLY, |
| 1126 | u3, &zone); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1127 | else { |
Kristian Evensen | 866476f | 2014-12-24 09:57:10 +0100 | [diff] [blame] | 1128 | return ctnetlink_flush_conntrack(net, cda, |
| 1129 | NETLINK_CB(skb).portid, |
| 1130 | nlmsg_report(nlh)); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1131 | } |
| 1132 | |
| 1133 | if (err < 0) |
| 1134 | return err; |
| 1135 | |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 1136 | h = nf_conntrack_find_get(net, &zone, &tuple); |
Pablo Neira Ayuso | 9ea8cfd | 2006-10-12 14:09:16 -0700 | [diff] [blame] | 1137 | if (!h) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1138 | return -ENOENT; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1139 | |
| 1140 | ct = nf_ct_tuplehash_to_ctrack(h); |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 1141 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1142 | if (cda[CTA_ID]) { |
Patrick McHardy | 77236b6 | 2007-12-17 22:29:45 -0800 | [diff] [blame] | 1143 | u_int32_t id = ntohl(nla_get_be32(cda[CTA_ID])); |
Patrick McHardy | 7f85f91 | 2007-09-28 14:41:27 -0700 | [diff] [blame] | 1144 | if (id != (u32)(unsigned long)ct) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1145 | nf_ct_put(ct); |
| 1146 | return -ENOENT; |
| 1147 | } |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 1148 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1149 | |
Florian Westphal | 02982c2 | 2013-07-29 15:41:54 +0200 | [diff] [blame] | 1150 | if (del_timer(&ct->timeout)) |
| 1151 | nf_ct_delete(ct, NETLINK_CB(skb).portid, nlmsg_report(nlh)); |
| 1152 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1153 | nf_ct_put(ct); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1154 | |
| 1155 | return 0; |
| 1156 | } |
| 1157 | |
Pablo Neira Ayuso | 7b8002a | 2015-12-15 18:41:56 +0100 | [diff] [blame] | 1158 | static int ctnetlink_get_conntrack(struct net *net, struct sock *ctnl, |
| 1159 | struct sk_buff *skb, |
| 1160 | const struct nlmsghdr *nlh, |
| 1161 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1162 | { |
| 1163 | struct nf_conntrack_tuple_hash *h; |
| 1164 | struct nf_conntrack_tuple tuple; |
| 1165 | struct nf_conn *ct; |
| 1166 | struct sk_buff *skb2 = NULL; |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 1167 | struct nfgenmsg *nfmsg = nlmsg_data(nlh); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1168 | u_int8_t u3 = nfmsg->nfgen_family; |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 1169 | struct nf_conntrack_zone zone; |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 1170 | int err; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1171 | |
Pablo Neira Ayuso | 80d326f | 2012-02-24 14:30:15 +0000 | [diff] [blame] | 1172 | if (nlh->nlmsg_flags & NLM_F_DUMP) { |
| 1173 | struct netlink_dump_control c = { |
| 1174 | .dump = ctnetlink_dump_table, |
| 1175 | .done = ctnetlink_done, |
| 1176 | }; |
Kristian Evensen | 866476f | 2014-12-24 09:57:10 +0100 | [diff] [blame] | 1177 | |
Pablo Neira Ayuso | 0f298a2 | 2012-02-24 14:41:50 +0000 | [diff] [blame] | 1178 | if (cda[CTA_MARK] && cda[CTA_MARK_MASK]) { |
Kristian Evensen | 866476f | 2014-12-24 09:57:10 +0100 | [diff] [blame] | 1179 | struct ctnetlink_filter *filter; |
Pablo Neira Ayuso | 0f298a2 | 2012-02-24 14:41:50 +0000 | [diff] [blame] | 1180 | |
Kristian Evensen | 866476f | 2014-12-24 09:57:10 +0100 | [diff] [blame] | 1181 | filter = ctnetlink_alloc_filter(cda); |
| 1182 | if (IS_ERR(filter)) |
| 1183 | return PTR_ERR(filter); |
Pablo Neira Ayuso | 0f298a2 | 2012-02-24 14:41:50 +0000 | [diff] [blame] | 1184 | |
Pablo Neira Ayuso | 0f298a2 | 2012-02-24 14:41:50 +0000 | [diff] [blame] | 1185 | c.data = filter; |
| 1186 | } |
Pablo Neira Ayuso | 80d326f | 2012-02-24 14:30:15 +0000 | [diff] [blame] | 1187 | return netlink_dump_start(ctnl, skb, nlh, &c); |
| 1188 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1189 | |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 1190 | err = ctnetlink_parse_zone(cda[CTA_ZONE], &zone); |
| 1191 | if (err < 0) |
| 1192 | return err; |
| 1193 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1194 | if (cda[CTA_TUPLE_ORIG]) |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 1195 | err = ctnetlink_parse_tuple(cda, &tuple, CTA_TUPLE_ORIG, |
| 1196 | u3, &zone); |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1197 | else if (cda[CTA_TUPLE_REPLY]) |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 1198 | err = ctnetlink_parse_tuple(cda, &tuple, CTA_TUPLE_REPLY, |
| 1199 | u3, &zone); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1200 | else |
| 1201 | return -EINVAL; |
| 1202 | |
| 1203 | if (err < 0) |
| 1204 | return err; |
| 1205 | |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 1206 | h = nf_conntrack_find_get(net, &zone, &tuple); |
Pablo Neira Ayuso | 9ea8cfd | 2006-10-12 14:09:16 -0700 | [diff] [blame] | 1207 | if (!h) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1208 | return -ENOENT; |
Pablo Neira Ayuso | 9ea8cfd | 2006-10-12 14:09:16 -0700 | [diff] [blame] | 1209 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1210 | ct = nf_ct_tuplehash_to_ctrack(h); |
| 1211 | |
| 1212 | err = -ENOMEM; |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 1213 | skb2 = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| 1214 | if (skb2 == NULL) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1215 | nf_ct_put(ct); |
| 1216 | return -ENOMEM; |
| 1217 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1218 | |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 1219 | rcu_read_lock(); |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 1220 | 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] | 1221 | NFNL_MSG_TYPE(nlh->nlmsg_type), ct); |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 1222 | rcu_read_unlock(); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1223 | nf_ct_put(ct); |
| 1224 | if (err <= 0) |
| 1225 | goto free; |
| 1226 | |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 1227 | err = netlink_unicast(ctnl, skb2, NETLINK_CB(skb).portid, MSG_DONTWAIT); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1228 | if (err < 0) |
| 1229 | goto out; |
| 1230 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1231 | return 0; |
| 1232 | |
| 1233 | free: |
| 1234 | kfree_skb(skb2); |
| 1235 | out: |
Pablo Neira Ayuso | f31e8d49 | 2011-01-13 14:19:55 +0100 | [diff] [blame] | 1236 | /* this avoids a loop in nfnetlink. */ |
| 1237 | return err == -EAGAIN ? -ENOBUFS : err; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1238 | } |
| 1239 | |
Pablo Neira Ayuso | d871bef | 2012-11-27 14:49:42 +0100 | [diff] [blame] | 1240 | static int ctnetlink_done_list(struct netlink_callback *cb) |
| 1241 | { |
| 1242 | if (cb->args[1]) |
| 1243 | nf_ct_put((struct nf_conn *)cb->args[1]); |
| 1244 | return 0; |
| 1245 | } |
| 1246 | |
| 1247 | static int |
Jesper Dangaard Brouer | b7779d0 | 2014-03-03 14:45:20 +0100 | [diff] [blame] | 1248 | 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] | 1249 | { |
Florian Westphal | cd5f336 | 2014-06-08 11:41:23 +0200 | [diff] [blame] | 1250 | struct nf_conn *ct, *last; |
Pablo Neira Ayuso | d871bef | 2012-11-27 14:49:42 +0100 | [diff] [blame] | 1251 | struct nf_conntrack_tuple_hash *h; |
| 1252 | struct hlist_nulls_node *n; |
| 1253 | struct nfgenmsg *nfmsg = nlmsg_data(cb->nlh); |
| 1254 | u_int8_t l3proto = nfmsg->nfgen_family; |
| 1255 | int res; |
Jesper Dangaard Brouer | b7779d0 | 2014-03-03 14:45:20 +0100 | [diff] [blame] | 1256 | int cpu; |
| 1257 | struct hlist_nulls_head *list; |
| 1258 | struct net *net = sock_net(skb->sk); |
Pablo Neira Ayuso | d871bef | 2012-11-27 14:49:42 +0100 | [diff] [blame] | 1259 | |
| 1260 | if (cb->args[2]) |
| 1261 | return 0; |
| 1262 | |
Florian Westphal | cd5f336 | 2014-06-08 11:41:23 +0200 | [diff] [blame] | 1263 | last = (struct nf_conn *)cb->args[1]; |
| 1264 | |
Jesper Dangaard Brouer | b7779d0 | 2014-03-03 14:45:20 +0100 | [diff] [blame] | 1265 | for (cpu = cb->args[0]; cpu < nr_cpu_ids; cpu++) { |
| 1266 | struct ct_pcpu *pcpu; |
| 1267 | |
| 1268 | if (!cpu_possible(cpu)) |
Pablo Neira Ayuso | d871bef | 2012-11-27 14:49:42 +0100 | [diff] [blame] | 1269 | continue; |
Jesper Dangaard Brouer | b7779d0 | 2014-03-03 14:45:20 +0100 | [diff] [blame] | 1270 | |
| 1271 | pcpu = per_cpu_ptr(net->ct.pcpu_lists, cpu); |
| 1272 | spin_lock_bh(&pcpu->lock); |
Jesper Dangaard Brouer | b7779d0 | 2014-03-03 14:45:20 +0100 | [diff] [blame] | 1273 | list = dying ? &pcpu->dying : &pcpu->unconfirmed; |
| 1274 | restart: |
| 1275 | hlist_nulls_for_each_entry(h, n, list, hnnode) { |
| 1276 | ct = nf_ct_tuplehash_to_ctrack(h); |
| 1277 | if (l3proto && nf_ct_l3num(ct) != l3proto) |
Pablo Neira Ayuso | d871bef | 2012-11-27 14:49:42 +0100 | [diff] [blame] | 1278 | continue; |
Jesper Dangaard Brouer | b7779d0 | 2014-03-03 14:45:20 +0100 | [diff] [blame] | 1279 | if (cb->args[1]) { |
| 1280 | if (ct != last) |
| 1281 | continue; |
| 1282 | cb->args[1] = 0; |
| 1283 | } |
| 1284 | rcu_read_lock(); |
| 1285 | res = ctnetlink_fill_info(skb, NETLINK_CB(cb->skb).portid, |
| 1286 | cb->nlh->nlmsg_seq, |
| 1287 | NFNL_MSG_TYPE(cb->nlh->nlmsg_type), |
| 1288 | ct); |
| 1289 | rcu_read_unlock(); |
| 1290 | if (res < 0) { |
Florian Westphal | cd5f336 | 2014-06-08 11:41:23 +0200 | [diff] [blame] | 1291 | if (!atomic_inc_not_zero(&ct->ct_general.use)) |
| 1292 | continue; |
Pablo Neira Ayuso | 266155b | 2014-06-05 14:28:44 +0200 | [diff] [blame] | 1293 | cb->args[0] = cpu; |
Jesper Dangaard Brouer | b7779d0 | 2014-03-03 14:45:20 +0100 | [diff] [blame] | 1294 | cb->args[1] = (unsigned long)ct; |
| 1295 | spin_unlock_bh(&pcpu->lock); |
| 1296 | goto out; |
| 1297 | } |
| 1298 | } |
| 1299 | if (cb->args[1]) { |
Pablo Neira Ayuso | d871bef | 2012-11-27 14:49:42 +0100 | [diff] [blame] | 1300 | cb->args[1] = 0; |
Jesper Dangaard Brouer | b7779d0 | 2014-03-03 14:45:20 +0100 | [diff] [blame] | 1301 | goto restart; |
Pablo Neira Ayuso | 266155b | 2014-06-05 14:28:44 +0200 | [diff] [blame] | 1302 | } |
Jesper Dangaard Brouer | b7779d0 | 2014-03-03 14:45:20 +0100 | [diff] [blame] | 1303 | spin_unlock_bh(&pcpu->lock); |
Pablo Neira Ayuso | d871bef | 2012-11-27 14:49:42 +0100 | [diff] [blame] | 1304 | } |
Pablo Neira Ayuso | 266155b | 2014-06-05 14:28:44 +0200 | [diff] [blame] | 1305 | cb->args[2] = 1; |
Pablo Neira Ayuso | d871bef | 2012-11-27 14:49:42 +0100 | [diff] [blame] | 1306 | out: |
Pablo Neira Ayuso | d871bef | 2012-11-27 14:49:42 +0100 | [diff] [blame] | 1307 | if (last) |
| 1308 | nf_ct_put(last); |
| 1309 | |
| 1310 | return skb->len; |
| 1311 | } |
| 1312 | |
| 1313 | static int |
| 1314 | ctnetlink_dump_dying(struct sk_buff *skb, struct netlink_callback *cb) |
| 1315 | { |
Jesper Dangaard Brouer | b7779d0 | 2014-03-03 14:45:20 +0100 | [diff] [blame] | 1316 | return ctnetlink_dump_list(skb, cb, true); |
Pablo Neira Ayuso | d871bef | 2012-11-27 14:49:42 +0100 | [diff] [blame] | 1317 | } |
| 1318 | |
Pablo Neira Ayuso | 7b8002a | 2015-12-15 18:41:56 +0100 | [diff] [blame] | 1319 | static int ctnetlink_get_ct_dying(struct net *net, struct sock *ctnl, |
| 1320 | struct sk_buff *skb, |
| 1321 | const struct nlmsghdr *nlh, |
| 1322 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | d871bef | 2012-11-27 14:49:42 +0100 | [diff] [blame] | 1323 | { |
| 1324 | if (nlh->nlmsg_flags & NLM_F_DUMP) { |
| 1325 | struct netlink_dump_control c = { |
| 1326 | .dump = ctnetlink_dump_dying, |
| 1327 | .done = ctnetlink_done_list, |
| 1328 | }; |
| 1329 | return netlink_dump_start(ctnl, skb, nlh, &c); |
| 1330 | } |
| 1331 | |
| 1332 | return -EOPNOTSUPP; |
| 1333 | } |
| 1334 | |
| 1335 | static int |
| 1336 | ctnetlink_dump_unconfirmed(struct sk_buff *skb, struct netlink_callback *cb) |
| 1337 | { |
Jesper Dangaard Brouer | b7779d0 | 2014-03-03 14:45:20 +0100 | [diff] [blame] | 1338 | return ctnetlink_dump_list(skb, cb, false); |
Pablo Neira Ayuso | d871bef | 2012-11-27 14:49:42 +0100 | [diff] [blame] | 1339 | } |
| 1340 | |
Pablo Neira Ayuso | 7b8002a | 2015-12-15 18:41:56 +0100 | [diff] [blame] | 1341 | static int ctnetlink_get_ct_unconfirmed(struct net *net, struct sock *ctnl, |
| 1342 | struct sk_buff *skb, |
| 1343 | const struct nlmsghdr *nlh, |
| 1344 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | d871bef | 2012-11-27 14:49:42 +0100 | [diff] [blame] | 1345 | { |
| 1346 | if (nlh->nlmsg_flags & NLM_F_DUMP) { |
| 1347 | struct netlink_dump_control c = { |
| 1348 | .dump = ctnetlink_dump_unconfirmed, |
| 1349 | .done = ctnetlink_done_list, |
| 1350 | }; |
| 1351 | return netlink_dump_start(ctnl, skb, nlh, &c); |
| 1352 | } |
| 1353 | |
| 1354 | return -EOPNOTSUPP; |
| 1355 | } |
| 1356 | |
Pablo Neira Ayuso | 6767184 | 2008-10-20 03:34:27 -0700 | [diff] [blame] | 1357 | #ifdef CONFIG_NF_NAT_NEEDED |
Ilpo Järvinen | bb5cf80 | 2008-01-05 23:11:31 -0800 | [diff] [blame] | 1358 | static int |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 1359 | ctnetlink_parse_nat_setup(struct nf_conn *ct, |
| 1360 | enum nf_nat_manip_type manip, |
Patrick McHardy | 3993832 | 2009-08-25 16:07:58 +0200 | [diff] [blame] | 1361 | const struct nlattr *attr) |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 1362 | { |
| 1363 | typeof(nfnetlink_parse_nat_setup_hook) parse_nat_setup; |
Patrick McHardy | c7232c9 | 2012-08-26 19:14:06 +0200 | [diff] [blame] | 1364 | int err; |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 1365 | |
| 1366 | parse_nat_setup = rcu_dereference(nfnetlink_parse_nat_setup_hook); |
| 1367 | if (!parse_nat_setup) { |
Johannes Berg | 95a5afc | 2008-10-16 15:24:51 -0700 | [diff] [blame] | 1368 | #ifdef CONFIG_MODULES |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 1369 | rcu_read_unlock(); |
Pablo Neira Ayuso | c14b78e | 2013-02-05 01:50:26 +0100 | [diff] [blame] | 1370 | nfnl_unlock(NFNL_SUBSYS_CTNETLINK); |
Patrick McHardy | c7232c9 | 2012-08-26 19:14:06 +0200 | [diff] [blame] | 1371 | if (request_module("nf-nat") < 0) { |
Pablo Neira Ayuso | c14b78e | 2013-02-05 01:50:26 +0100 | [diff] [blame] | 1372 | nfnl_lock(NFNL_SUBSYS_CTNETLINK); |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 1373 | rcu_read_lock(); |
| 1374 | return -EOPNOTSUPP; |
| 1375 | } |
Pablo Neira Ayuso | c14b78e | 2013-02-05 01:50:26 +0100 | [diff] [blame] | 1376 | nfnl_lock(NFNL_SUBSYS_CTNETLINK); |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 1377 | rcu_read_lock(); |
| 1378 | if (nfnetlink_parse_nat_setup_hook) |
| 1379 | return -EAGAIN; |
| 1380 | #endif |
| 1381 | return -EOPNOTSUPP; |
| 1382 | } |
| 1383 | |
Patrick McHardy | c7232c9 | 2012-08-26 19:14:06 +0200 | [diff] [blame] | 1384 | err = parse_nat_setup(ct, manip, attr); |
| 1385 | if (err == -EAGAIN) { |
| 1386 | #ifdef CONFIG_MODULES |
| 1387 | rcu_read_unlock(); |
Pablo Neira Ayuso | c14b78e | 2013-02-05 01:50:26 +0100 | [diff] [blame] | 1388 | nfnl_unlock(NFNL_SUBSYS_CTNETLINK); |
Patrick McHardy | c7232c9 | 2012-08-26 19:14:06 +0200 | [diff] [blame] | 1389 | if (request_module("nf-nat-%u", nf_ct_l3num(ct)) < 0) { |
Pablo Neira Ayuso | c14b78e | 2013-02-05 01:50:26 +0100 | [diff] [blame] | 1390 | nfnl_lock(NFNL_SUBSYS_CTNETLINK); |
Patrick McHardy | c7232c9 | 2012-08-26 19:14:06 +0200 | [diff] [blame] | 1391 | rcu_read_lock(); |
| 1392 | return -EOPNOTSUPP; |
| 1393 | } |
Pablo Neira Ayuso | c14b78e | 2013-02-05 01:50:26 +0100 | [diff] [blame] | 1394 | nfnl_lock(NFNL_SUBSYS_CTNETLINK); |
Patrick McHardy | c7232c9 | 2012-08-26 19:14:06 +0200 | [diff] [blame] | 1395 | rcu_read_lock(); |
| 1396 | #else |
| 1397 | err = -EOPNOTSUPP; |
| 1398 | #endif |
| 1399 | } |
| 1400 | return err; |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 1401 | } |
Pablo Neira Ayuso | 6767184 | 2008-10-20 03:34:27 -0700 | [diff] [blame] | 1402 | #endif |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 1403 | |
| 1404 | static int |
Patrick McHardy | 3993832 | 2009-08-25 16:07:58 +0200 | [diff] [blame] | 1405 | 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] | 1406 | { |
| 1407 | unsigned long d; |
Patrick McHardy | 77236b6 | 2007-12-17 22:29:45 -0800 | [diff] [blame] | 1408 | unsigned int status = ntohl(nla_get_be32(cda[CTA_STATUS])); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1409 | d = ct->status ^ status; |
| 1410 | |
| 1411 | if (d & (IPS_EXPECTED|IPS_CONFIRMED|IPS_DYING)) |
| 1412 | /* unchangeable */ |
Pablo Neira Ayuso | 0adf9d6 | 2008-06-09 15:56:20 -0700 | [diff] [blame] | 1413 | return -EBUSY; |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 1414 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1415 | if (d & IPS_SEEN_REPLY && !(status & IPS_SEEN_REPLY)) |
| 1416 | /* SEEN_REPLY bit can only be set */ |
Pablo Neira Ayuso | 0adf9d6 | 2008-06-09 15:56:20 -0700 | [diff] [blame] | 1417 | return -EBUSY; |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 1418 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1419 | if (d & IPS_ASSURED && !(status & IPS_ASSURED)) |
| 1420 | /* ASSURED bit can only be set */ |
Pablo Neira Ayuso | 0adf9d6 | 2008-06-09 15:56:20 -0700 | [diff] [blame] | 1421 | return -EBUSY; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1422 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1423 | /* Be careful here, modifying NAT bits can screw up things, |
| 1424 | * 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] | 1425 | * nf_nat_range. */ |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1426 | ct->status |= status & ~(IPS_NAT_DONE_MASK | IPS_NAT_MASK); |
| 1427 | return 0; |
| 1428 | } |
| 1429 | |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 1430 | static int |
Pablo Neira Ayuso | 0eba801 | 2014-02-16 12:15:43 +0100 | [diff] [blame] | 1431 | 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] | 1432 | { |
| 1433 | #ifdef CONFIG_NF_NAT_NEEDED |
| 1434 | int ret; |
| 1435 | |
Florian Westphal | fe337ac | 2014-04-28 21:07:31 +0200 | [diff] [blame] | 1436 | if (!cda[CTA_NAT_DST] && !cda[CTA_NAT_SRC]) |
| 1437 | return 0; |
| 1438 | |
Pablo Neira Ayuso | 0eba801 | 2014-02-16 12:15:43 +0100 | [diff] [blame] | 1439 | ret = ctnetlink_parse_nat_setup(ct, NF_NAT_MANIP_DST, |
| 1440 | cda[CTA_NAT_DST]); |
| 1441 | if (ret < 0) |
| 1442 | return ret; |
| 1443 | |
| 1444 | ret = ctnetlink_parse_nat_setup(ct, NF_NAT_MANIP_SRC, |
| 1445 | cda[CTA_NAT_SRC]); |
| 1446 | return ret; |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 1447 | #else |
Pablo Neira Ayuso | 0eba801 | 2014-02-16 12:15:43 +0100 | [diff] [blame] | 1448 | if (!cda[CTA_NAT_DST] && !cda[CTA_NAT_SRC]) |
| 1449 | return 0; |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 1450 | return -EOPNOTSUPP; |
| 1451 | #endif |
| 1452 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1453 | |
Pablo Neira Ayuso | 4054ff4 | 2016-04-12 23:32:34 +0200 | [diff] [blame] | 1454 | static int ctnetlink_change_helper(struct nf_conn *ct, |
| 1455 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1456 | { |
| 1457 | struct nf_conntrack_helper *helper; |
Harald Welte | dc808fe | 2006-03-20 17:56:32 -0800 | [diff] [blame] | 1458 | struct nf_conn_help *help = nfct_help(ct); |
Pablo Neira Ayuso | 29fe1b4 | 2009-04-22 02:26:37 -0700 | [diff] [blame] | 1459 | char *helpname = NULL; |
Pablo Neira Ayuso | ae243be | 2012-06-07 14:19:42 +0200 | [diff] [blame] | 1460 | struct nlattr *helpinfo = NULL; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1461 | int err; |
| 1462 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1463 | /* don't change helper of sibling connections */ |
| 1464 | if (ct->master) |
Pablo Neira Ayuso | 0adf9d6 | 2008-06-09 15:56:20 -0700 | [diff] [blame] | 1465 | return -EBUSY; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1466 | |
Pablo Neira Ayuso | ae243be | 2012-06-07 14:19:42 +0200 | [diff] [blame] | 1467 | err = ctnetlink_parse_help(cda[CTA_HELP], &helpname, &helpinfo); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1468 | if (err < 0) |
| 1469 | return err; |
| 1470 | |
Yasuyuki Kozakai | df293bb | 2007-05-10 14:15:58 -0700 | [diff] [blame] | 1471 | if (!strcmp(helpname, "")) { |
| 1472 | if (help && help->helper) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1473 | /* we had a helper before ... */ |
| 1474 | nf_ct_remove_expectations(ct); |
Stephen Hemminger | a9b3cd7 | 2011-08-01 16:19:00 +0000 | [diff] [blame] | 1475 | RCU_INIT_POINTER(help->helper, NULL); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1476 | } |
Yasuyuki Kozakai | df293bb | 2007-05-10 14:15:58 -0700 | [diff] [blame] | 1477 | |
| 1478 | return 0; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1479 | } |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 1480 | |
Patrick McHardy | 794e687 | 2010-02-03 13:41:29 +0100 | [diff] [blame] | 1481 | helper = __nf_conntrack_helper_find(helpname, nf_ct_l3num(ct), |
| 1482 | nf_ct_protonum(ct)); |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1483 | if (helper == NULL) { |
| 1484 | #ifdef CONFIG_MODULES |
Jesper Dangaard Brouer | ca7433d | 2014-03-03 14:46:01 +0100 | [diff] [blame] | 1485 | spin_unlock_bh(&nf_conntrack_expect_lock); |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1486 | |
| 1487 | if (request_module("nfct-helper-%s", helpname) < 0) { |
Jesper Dangaard Brouer | ca7433d | 2014-03-03 14:46:01 +0100 | [diff] [blame] | 1488 | spin_lock_bh(&nf_conntrack_expect_lock); |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1489 | return -EOPNOTSUPP; |
| 1490 | } |
| 1491 | |
Jesper Dangaard Brouer | ca7433d | 2014-03-03 14:46:01 +0100 | [diff] [blame] | 1492 | spin_lock_bh(&nf_conntrack_expect_lock); |
Patrick McHardy | 794e687 | 2010-02-03 13:41:29 +0100 | [diff] [blame] | 1493 | helper = __nf_conntrack_helper_find(helpname, nf_ct_l3num(ct), |
| 1494 | nf_ct_protonum(ct)); |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1495 | if (helper) |
| 1496 | return -EAGAIN; |
| 1497 | #endif |
Pablo Neira Ayuso | 0adf9d6 | 2008-06-09 15:56:20 -0700 | [diff] [blame] | 1498 | return -EOPNOTSUPP; |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1499 | } |
Yasuyuki Kozakai | df293bb | 2007-05-10 14:15:58 -0700 | [diff] [blame] | 1500 | |
Yasuyuki Kozakai | ceceae1 | 2007-07-07 22:23:42 -0700 | [diff] [blame] | 1501 | if (help) { |
Pablo Neira Ayuso | ae243be | 2012-06-07 14:19:42 +0200 | [diff] [blame] | 1502 | if (help->helper == helper) { |
| 1503 | /* update private helper data if allowed. */ |
Pablo Neira Ayuso | 7be54ca | 2012-09-21 16:52:08 +0200 | [diff] [blame] | 1504 | if (helper->from_nlattr) |
Pablo Neira Ayuso | ae243be | 2012-06-07 14:19:42 +0200 | [diff] [blame] | 1505 | helper->from_nlattr(helpinfo, ct); |
Yasuyuki Kozakai | ceceae1 | 2007-07-07 22:23:42 -0700 | [diff] [blame] | 1506 | return 0; |
Pablo Neira Ayuso | fd7462d | 2012-06-18 17:29:53 +0200 | [diff] [blame] | 1507 | } else |
Yasuyuki Kozakai | ceceae1 | 2007-07-07 22:23:42 -0700 | [diff] [blame] | 1508 | return -EBUSY; |
Yasuyuki Kozakai | ceceae1 | 2007-07-07 22:23:42 -0700 | [diff] [blame] | 1509 | } |
Yasuyuki Kozakai | df293bb | 2007-05-10 14:15:58 -0700 | [diff] [blame] | 1510 | |
Pablo Neira Ayuso | fd7462d | 2012-06-18 17:29:53 +0200 | [diff] [blame] | 1511 | /* we cannot set a helper for an existing conntrack */ |
| 1512 | return -EOPNOTSUPP; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1513 | } |
| 1514 | |
Pablo Neira Ayuso | 4054ff4 | 2016-04-12 23:32:34 +0200 | [diff] [blame] | 1515 | static int ctnetlink_change_timeout(struct nf_conn *ct, |
| 1516 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1517 | { |
Patrick McHardy | 77236b6 | 2007-12-17 22:29:45 -0800 | [diff] [blame] | 1518 | u_int32_t timeout = ntohl(nla_get_be32(cda[CTA_TIMEOUT])); |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 1519 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1520 | if (!del_timer(&ct->timeout)) |
| 1521 | return -ETIME; |
| 1522 | |
| 1523 | ct->timeout.expires = jiffies + timeout * HZ; |
| 1524 | add_timer(&ct->timeout); |
| 1525 | |
| 1526 | return 0; |
| 1527 | } |
| 1528 | |
Patrick McHardy | d0b0268 | 2010-02-10 15:38:33 +0100 | [diff] [blame] | 1529 | static const struct nla_policy protoinfo_policy[CTA_PROTOINFO_MAX+1] = { |
| 1530 | [CTA_PROTOINFO_TCP] = { .type = NLA_NESTED }, |
| 1531 | [CTA_PROTOINFO_DCCP] = { .type = NLA_NESTED }, |
| 1532 | [CTA_PROTOINFO_SCTP] = { .type = NLA_NESTED }, |
| 1533 | }; |
| 1534 | |
Pablo Neira Ayuso | 4054ff4 | 2016-04-12 23:32:34 +0200 | [diff] [blame] | 1535 | static int ctnetlink_change_protoinfo(struct nf_conn *ct, |
| 1536 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1537 | { |
Patrick McHardy | 3993832 | 2009-08-25 16:07:58 +0200 | [diff] [blame] | 1538 | const struct nlattr *attr = cda[CTA_PROTOINFO]; |
| 1539 | struct nlattr *tb[CTA_PROTOINFO_MAX+1]; |
Martin Josefsson | 605dcad | 2006-11-29 02:35:06 +0100 | [diff] [blame] | 1540 | struct nf_conntrack_l4proto *l4proto; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1541 | int err = 0; |
| 1542 | |
Daniel Borkmann | 130ffbc | 2013-06-12 17:54:51 +0200 | [diff] [blame] | 1543 | err = nla_parse_nested(tb, CTA_PROTOINFO_MAX, attr, protoinfo_policy); |
| 1544 | if (err < 0) |
| 1545 | return err; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1546 | |
Florian Westphal | cd91566 | 2009-03-18 17:28:37 +0100 | [diff] [blame] | 1547 | rcu_read_lock(); |
| 1548 | 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] | 1549 | if (l4proto->from_nlattr) |
| 1550 | err = l4proto->from_nlattr(tb, ct); |
Florian Westphal | cd91566 | 2009-03-18 17:28:37 +0100 | [diff] [blame] | 1551 | rcu_read_unlock(); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1552 | |
| 1553 | return err; |
| 1554 | } |
| 1555 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1556 | static const struct nla_policy seqadj_policy[CTA_SEQADJ_MAX+1] = { |
| 1557 | [CTA_SEQADJ_CORRECTION_POS] = { .type = NLA_U32 }, |
| 1558 | [CTA_SEQADJ_OFFSET_BEFORE] = { .type = NLA_U32 }, |
| 1559 | [CTA_SEQADJ_OFFSET_AFTER] = { .type = NLA_U32 }, |
Patrick McHardy | d0b0268 | 2010-02-10 15:38:33 +0100 | [diff] [blame] | 1560 | }; |
| 1561 | |
Pablo Neira Ayuso | 4054ff4 | 2016-04-12 23:32:34 +0200 | [diff] [blame] | 1562 | static int change_seq_adj(struct nf_ct_seqadj *seq, |
| 1563 | const struct nlattr * const attr) |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1564 | { |
Daniel Borkmann | 130ffbc | 2013-06-12 17:54:51 +0200 | [diff] [blame] | 1565 | int err; |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1566 | struct nlattr *cda[CTA_SEQADJ_MAX+1]; |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1567 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1568 | err = nla_parse_nested(cda, CTA_SEQADJ_MAX, attr, seqadj_policy); |
Daniel Borkmann | 130ffbc | 2013-06-12 17:54:51 +0200 | [diff] [blame] | 1569 | if (err < 0) |
| 1570 | return err; |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1571 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1572 | if (!cda[CTA_SEQADJ_CORRECTION_POS]) |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1573 | return -EINVAL; |
| 1574 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1575 | seq->correction_pos = |
| 1576 | ntohl(nla_get_be32(cda[CTA_SEQADJ_CORRECTION_POS])); |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1577 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1578 | if (!cda[CTA_SEQADJ_OFFSET_BEFORE]) |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1579 | return -EINVAL; |
| 1580 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1581 | seq->offset_before = |
| 1582 | ntohl(nla_get_be32(cda[CTA_SEQADJ_OFFSET_BEFORE])); |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1583 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1584 | if (!cda[CTA_SEQADJ_OFFSET_AFTER]) |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1585 | return -EINVAL; |
| 1586 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1587 | seq->offset_after = |
| 1588 | ntohl(nla_get_be32(cda[CTA_SEQADJ_OFFSET_AFTER])); |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1589 | |
| 1590 | return 0; |
| 1591 | } |
| 1592 | |
| 1593 | static int |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1594 | ctnetlink_change_seq_adj(struct nf_conn *ct, |
| 1595 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1596 | { |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1597 | struct nf_conn_seqadj *seqadj = nfct_seqadj(ct); |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1598 | int ret = 0; |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1599 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1600 | if (!seqadj) |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1601 | return 0; |
| 1602 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1603 | if (cda[CTA_SEQ_ADJ_ORIG]) { |
| 1604 | ret = change_seq_adj(&seqadj->seq[IP_CT_DIR_ORIGINAL], |
| 1605 | cda[CTA_SEQ_ADJ_ORIG]); |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1606 | if (ret < 0) |
| 1607 | return ret; |
| 1608 | |
| 1609 | ct->status |= IPS_SEQ_ADJUST; |
| 1610 | } |
| 1611 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1612 | if (cda[CTA_SEQ_ADJ_REPLY]) { |
| 1613 | ret = change_seq_adj(&seqadj->seq[IP_CT_DIR_REPLY], |
| 1614 | cda[CTA_SEQ_ADJ_REPLY]); |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1615 | if (ret < 0) |
| 1616 | return ret; |
| 1617 | |
| 1618 | ct->status |= IPS_SEQ_ADJUST; |
| 1619 | } |
| 1620 | |
| 1621 | return 0; |
| 1622 | } |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1623 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1624 | static int |
Florian Westphal | 9b21f6a | 2013-01-11 06:30:46 +0000 | [diff] [blame] | 1625 | ctnetlink_attach_labels(struct nf_conn *ct, const struct nlattr * const cda[]) |
| 1626 | { |
| 1627 | #ifdef CONFIG_NF_CONNTRACK_LABELS |
| 1628 | size_t len = nla_len(cda[CTA_LABELS]); |
| 1629 | const void *mask = cda[CTA_LABELS_MASK]; |
| 1630 | |
| 1631 | if (len & (sizeof(u32)-1)) /* must be multiple of u32 */ |
| 1632 | return -EINVAL; |
| 1633 | |
| 1634 | if (mask) { |
| 1635 | if (nla_len(cda[CTA_LABELS_MASK]) == 0 || |
| 1636 | nla_len(cda[CTA_LABELS_MASK]) != len) |
| 1637 | return -EINVAL; |
| 1638 | mask = nla_data(cda[CTA_LABELS_MASK]); |
| 1639 | } |
| 1640 | |
| 1641 | len /= sizeof(u32); |
| 1642 | |
| 1643 | return nf_connlabels_replace(ct, nla_data(cda[CTA_LABELS]), mask, len); |
| 1644 | #else |
| 1645 | return -EOPNOTSUPP; |
| 1646 | #endif |
| 1647 | } |
| 1648 | |
| 1649 | static int |
Patrick McHardy | 3993832 | 2009-08-25 16:07:58 +0200 | [diff] [blame] | 1650 | ctnetlink_change_conntrack(struct nf_conn *ct, |
| 1651 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1652 | { |
| 1653 | int err; |
| 1654 | |
Pablo Neira Ayuso | e098360 | 2009-03-16 15:27:22 +0100 | [diff] [blame] | 1655 | /* only allow NAT changes and master assignation for new conntracks */ |
| 1656 | if (cda[CTA_NAT_SRC] || cda[CTA_NAT_DST] || cda[CTA_TUPLE_MASTER]) |
| 1657 | return -EOPNOTSUPP; |
| 1658 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1659 | if (cda[CTA_HELP]) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1660 | err = ctnetlink_change_helper(ct, cda); |
| 1661 | if (err < 0) |
| 1662 | return err; |
| 1663 | } |
| 1664 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1665 | if (cda[CTA_TIMEOUT]) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1666 | err = ctnetlink_change_timeout(ct, cda); |
| 1667 | if (err < 0) |
| 1668 | return err; |
| 1669 | } |
| 1670 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1671 | if (cda[CTA_STATUS]) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1672 | err = ctnetlink_change_status(ct, cda); |
| 1673 | if (err < 0) |
| 1674 | return err; |
| 1675 | } |
| 1676 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1677 | if (cda[CTA_PROTOINFO]) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1678 | err = ctnetlink_change_protoinfo(ct, cda); |
| 1679 | if (err < 0) |
| 1680 | return err; |
| 1681 | } |
| 1682 | |
Martin Josefsson | bcd1e83 | 2006-04-01 02:23:21 -0800 | [diff] [blame] | 1683 | #if defined(CONFIG_NF_CONNTRACK_MARK) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1684 | if (cda[CTA_MARK]) |
Patrick McHardy | 77236b6 | 2007-12-17 22:29:45 -0800 | [diff] [blame] | 1685 | ct->mark = ntohl(nla_get_be32(cda[CTA_MARK])); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1686 | #endif |
| 1687 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1688 | if (cda[CTA_SEQ_ADJ_ORIG] || cda[CTA_SEQ_ADJ_REPLY]) { |
| 1689 | err = ctnetlink_change_seq_adj(ct, cda); |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1690 | if (err < 0) |
| 1691 | return err; |
| 1692 | } |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1693 | |
Florian Westphal | 9b21f6a | 2013-01-11 06:30:46 +0000 | [diff] [blame] | 1694 | if (cda[CTA_LABELS]) { |
| 1695 | err = ctnetlink_attach_labels(ct, cda); |
| 1696 | if (err < 0) |
| 1697 | return err; |
| 1698 | } |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1699 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1700 | return 0; |
| 1701 | } |
| 1702 | |
Pablo Neira Ayuso | f0a3c08 | 2009-03-16 15:28:09 +0100 | [diff] [blame] | 1703 | static struct nf_conn * |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 1704 | ctnetlink_create_conntrack(struct net *net, |
| 1705 | const struct nf_conntrack_zone *zone, |
Alexey Dobriyan | 9592a5c | 2010-01-13 16:04:18 +0100 | [diff] [blame] | 1706 | const struct nlattr * const cda[], |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1707 | struct nf_conntrack_tuple *otuple, |
Pablo Neira Ayuso | 5faa1f4 | 2007-09-28 14:43:53 -0700 | [diff] [blame] | 1708 | struct nf_conntrack_tuple *rtuple, |
Pablo Neira Ayuso | 7ec4749 | 2009-03-16 15:25:46 +0100 | [diff] [blame] | 1709 | u8 u3) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1710 | { |
| 1711 | struct nf_conn *ct; |
| 1712 | int err = -EINVAL; |
Yasuyuki Kozakai | ceceae1 | 2007-07-07 22:23:42 -0700 | [diff] [blame] | 1713 | struct nf_conntrack_helper *helper; |
Pablo Neira Ayuso | 315c34d | 2011-04-21 10:55:07 +0200 | [diff] [blame] | 1714 | struct nf_conn_tstamp *tstamp; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1715 | |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 1716 | ct = nf_conntrack_alloc(net, zone, otuple, rtuple, GFP_ATOMIC); |
Julia Lawall | cd7fcbf | 2009-01-12 00:06:08 +0000 | [diff] [blame] | 1717 | if (IS_ERR(ct)) |
Pablo Neira Ayuso | f0a3c08 | 2009-03-16 15:28:09 +0100 | [diff] [blame] | 1718 | return ERR_PTR(-ENOMEM); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1719 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1720 | if (!cda[CTA_TIMEOUT]) |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1721 | goto err1; |
Patrick McHardy | 77236b6 | 2007-12-17 22:29:45 -0800 | [diff] [blame] | 1722 | ct->timeout.expires = ntohl(nla_get_be32(cda[CTA_TIMEOUT])); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1723 | |
| 1724 | ct->timeout.expires = jiffies + ct->timeout.expires * HZ; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1725 | |
Patrick McHardy | 58a3c9b | 2008-01-31 04:36:54 -0800 | [diff] [blame] | 1726 | rcu_read_lock(); |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1727 | if (cda[CTA_HELP]) { |
Pablo Neira Ayuso | 29fe1b4 | 2009-04-22 02:26:37 -0700 | [diff] [blame] | 1728 | char *helpname = NULL; |
Pablo Neira Ayuso | ae243be | 2012-06-07 14:19:42 +0200 | [diff] [blame] | 1729 | struct nlattr *helpinfo = NULL; |
| 1730 | |
| 1731 | err = ctnetlink_parse_help(cda[CTA_HELP], &helpname, &helpinfo); |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1732 | if (err < 0) |
| 1733 | goto err2; |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1734 | |
Patrick McHardy | 794e687 | 2010-02-03 13:41:29 +0100 | [diff] [blame] | 1735 | helper = __nf_conntrack_helper_find(helpname, nf_ct_l3num(ct), |
| 1736 | nf_ct_protonum(ct)); |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1737 | if (helper == NULL) { |
| 1738 | rcu_read_unlock(); |
| 1739 | #ifdef CONFIG_MODULES |
| 1740 | if (request_module("nfct-helper-%s", helpname) < 0) { |
| 1741 | err = -EOPNOTSUPP; |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1742 | goto err1; |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1743 | } |
| 1744 | |
| 1745 | rcu_read_lock(); |
Patrick McHardy | 794e687 | 2010-02-03 13:41:29 +0100 | [diff] [blame] | 1746 | helper = __nf_conntrack_helper_find(helpname, |
| 1747 | nf_ct_l3num(ct), |
| 1748 | nf_ct_protonum(ct)); |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1749 | if (helper) { |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1750 | err = -EAGAIN; |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1751 | goto err2; |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1752 | } |
| 1753 | rcu_read_unlock(); |
| 1754 | #endif |
| 1755 | err = -EOPNOTSUPP; |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1756 | goto err1; |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1757 | } else { |
| 1758 | struct nf_conn_help *help; |
| 1759 | |
Pablo Neira Ayuso | 1afc567 | 2012-06-07 12:11:50 +0200 | [diff] [blame] | 1760 | help = nf_ct_helper_ext_add(ct, helper, GFP_ATOMIC); |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1761 | if (help == NULL) { |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1762 | err = -ENOMEM; |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1763 | goto err2; |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1764 | } |
Pablo Neira Ayuso | ae243be | 2012-06-07 14:19:42 +0200 | [diff] [blame] | 1765 | /* set private helper data if allowed. */ |
Pablo Neira Ayuso | 7be54ca | 2012-09-21 16:52:08 +0200 | [diff] [blame] | 1766 | if (helper->from_nlattr) |
Pablo Neira Ayuso | ae243be | 2012-06-07 14:19:42 +0200 | [diff] [blame] | 1767 | helper->from_nlattr(helpinfo, ct); |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1768 | |
| 1769 | /* not in hash table yet so not strictly necessary */ |
Stephen Hemminger | a9b3cd7 | 2011-08-01 16:19:00 +0000 | [diff] [blame] | 1770 | RCU_INIT_POINTER(help->helper, helper); |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1771 | } |
| 1772 | } else { |
| 1773 | /* try an implicit helper assignation */ |
Patrick McHardy | b2a15a6 | 2010-02-03 14:13:03 +0100 | [diff] [blame] | 1774 | err = __nf_ct_try_assign_helper(ct, NULL, GFP_ATOMIC); |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1775 | if (err < 0) |
| 1776 | goto err2; |
Patrick McHarrdy | 3c158f7 | 2007-06-05 12:55:27 -0700 | [diff] [blame] | 1777 | } |
Yasuyuki Kozakai | dafc741 | 2006-11-27 10:25:32 -0800 | [diff] [blame] | 1778 | |
Pablo Neira Ayuso | 0eba801 | 2014-02-16 12:15:43 +0100 | [diff] [blame] | 1779 | err = ctnetlink_setup_nat(ct, cda); |
| 1780 | if (err < 0) |
| 1781 | goto err2; |
Pablo Neira Ayuso | 1575e7e | 2008-08-18 21:30:55 -0700 | [diff] [blame] | 1782 | |
Pablo Neira Ayuso | a88e22a | 2010-02-19 14:24:39 +0100 | [diff] [blame] | 1783 | nf_ct_acct_ext_add(ct, GFP_ATOMIC); |
Pablo Neira Ayuso | a992ca2 | 2011-01-19 16:00:07 +0100 | [diff] [blame] | 1784 | nf_ct_tstamp_ext_add(ct, GFP_ATOMIC); |
Pablo Neira Ayuso | a88e22a | 2010-02-19 14:24:39 +0100 | [diff] [blame] | 1785 | nf_ct_ecache_ext_add(ct, 0, 0, GFP_ATOMIC); |
Florian Westphal | c539f01 | 2013-01-11 06:30:44 +0000 | [diff] [blame] | 1786 | nf_ct_labels_ext_add(ct); |
| 1787 | |
Pablo Neira Ayuso | a88e22a | 2010-02-19 14:24:39 +0100 | [diff] [blame] | 1788 | /* we must add conntrack extensions before confirmation. */ |
| 1789 | ct->status |= IPS_CONFIRMED; |
| 1790 | |
| 1791 | if (cda[CTA_STATUS]) { |
| 1792 | err = ctnetlink_change_status(ct, cda); |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1793 | if (err < 0) |
| 1794 | goto err2; |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 1795 | } |
| 1796 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1797 | if (cda[CTA_SEQ_ADJ_ORIG] || cda[CTA_SEQ_ADJ_REPLY]) { |
| 1798 | err = ctnetlink_change_seq_adj(ct, cda); |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1799 | if (err < 0) |
| 1800 | goto err2; |
Pablo Neira Ayuso | c969aa7 | 2009-02-09 14:33:57 -0800 | [diff] [blame] | 1801 | } |
Pablo Neira Ayuso | c969aa7 | 2009-02-09 14:33:57 -0800 | [diff] [blame] | 1802 | |
Changli Gao | e5fc9e7 | 2010-11-12 17:33:17 +0100 | [diff] [blame] | 1803 | memset(&ct->proto, 0, sizeof(ct->proto)); |
Pablo Neira Ayuso | 1575e7e | 2008-08-18 21:30:55 -0700 | [diff] [blame] | 1804 | if (cda[CTA_PROTOINFO]) { |
| 1805 | err = ctnetlink_change_protoinfo(ct, cda); |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1806 | if (err < 0) |
| 1807 | goto err2; |
Pablo Neira Ayuso | 1575e7e | 2008-08-18 21:30:55 -0700 | [diff] [blame] | 1808 | } |
| 1809 | |
Pablo Neira Ayuso | 1575e7e | 2008-08-18 21:30:55 -0700 | [diff] [blame] | 1810 | #if defined(CONFIG_NF_CONNTRACK_MARK) |
| 1811 | if (cda[CTA_MARK]) |
| 1812 | ct->mark = ntohl(nla_get_be32(cda[CTA_MARK])); |
| 1813 | #endif |
| 1814 | |
Pablo Neira Ayuso | 5faa1f4 | 2007-09-28 14:43:53 -0700 | [diff] [blame] | 1815 | /* setup master conntrack: this is a confirmed expectation */ |
Pablo Neira Ayuso | 7ec4749 | 2009-03-16 15:25:46 +0100 | [diff] [blame] | 1816 | if (cda[CTA_TUPLE_MASTER]) { |
| 1817 | struct nf_conntrack_tuple master; |
| 1818 | struct nf_conntrack_tuple_hash *master_h; |
| 1819 | struct nf_conn *master_ct; |
| 1820 | |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 1821 | err = ctnetlink_parse_tuple(cda, &master, CTA_TUPLE_MASTER, |
| 1822 | u3, NULL); |
Pablo Neira Ayuso | 7ec4749 | 2009-03-16 15:25:46 +0100 | [diff] [blame] | 1823 | if (err < 0) |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1824 | goto err2; |
Pablo Neira Ayuso | 7ec4749 | 2009-03-16 15:25:46 +0100 | [diff] [blame] | 1825 | |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 1826 | master_h = nf_conntrack_find_get(net, zone, &master); |
Pablo Neira Ayuso | 7ec4749 | 2009-03-16 15:25:46 +0100 | [diff] [blame] | 1827 | if (master_h == NULL) { |
| 1828 | err = -ENOENT; |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1829 | goto err2; |
Pablo Neira Ayuso | 7ec4749 | 2009-03-16 15:25:46 +0100 | [diff] [blame] | 1830 | } |
| 1831 | master_ct = nf_ct_tuplehash_to_ctrack(master_h); |
Pablo Neira Ayuso | f2a8900 | 2007-12-12 10:34:29 -0800 | [diff] [blame] | 1832 | __set_bit(IPS_EXPECTED_BIT, &ct->status); |
Pablo Neira Ayuso | 5faa1f4 | 2007-09-28 14:43:53 -0700 | [diff] [blame] | 1833 | ct->master = master_ct; |
Pablo Neira Ayuso | f2a8900 | 2007-12-12 10:34:29 -0800 | [diff] [blame] | 1834 | } |
Pablo Neira Ayuso | 315c34d | 2011-04-21 10:55:07 +0200 | [diff] [blame] | 1835 | tstamp = nf_conn_tstamp_find(ct); |
| 1836 | if (tstamp) |
Eric Dumazet | d2de875 | 2014-08-22 18:32:09 -0700 | [diff] [blame] | 1837 | tstamp->start = ktime_get_real_ns(); |
Pablo Neira Ayuso | 5faa1f4 | 2007-09-28 14:43:53 -0700 | [diff] [blame] | 1838 | |
Jozsef Kadlecsik | 7d367e0 | 2012-02-24 11:45:49 +0100 | [diff] [blame] | 1839 | err = nf_conntrack_hash_check_insert(ct); |
| 1840 | if (err < 0) |
| 1841 | goto err2; |
| 1842 | |
Patrick McHardy | 58a3c9b | 2008-01-31 04:36:54 -0800 | [diff] [blame] | 1843 | rcu_read_unlock(); |
Yasuyuki Kozakai | dafc741 | 2006-11-27 10:25:32 -0800 | [diff] [blame] | 1844 | |
Pablo Neira Ayuso | f0a3c08 | 2009-03-16 15:28:09 +0100 | [diff] [blame] | 1845 | return ct; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1846 | |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1847 | err2: |
| 1848 | rcu_read_unlock(); |
| 1849 | err1: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1850 | nf_conntrack_free(ct); |
Pablo Neira Ayuso | f0a3c08 | 2009-03-16 15:28:09 +0100 | [diff] [blame] | 1851 | return ERR_PTR(err); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1852 | } |
| 1853 | |
Pablo Neira Ayuso | 7b8002a | 2015-12-15 18:41:56 +0100 | [diff] [blame] | 1854 | static int ctnetlink_new_conntrack(struct net *net, struct sock *ctnl, |
| 1855 | struct sk_buff *skb, |
| 1856 | const struct nlmsghdr *nlh, |
| 1857 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1858 | { |
| 1859 | struct nf_conntrack_tuple otuple, rtuple; |
| 1860 | struct nf_conntrack_tuple_hash *h = NULL; |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 1861 | struct nfgenmsg *nfmsg = nlmsg_data(nlh); |
Jozsef Kadlecsik | 7d367e0 | 2012-02-24 11:45:49 +0100 | [diff] [blame] | 1862 | struct nf_conn *ct; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1863 | u_int8_t u3 = nfmsg->nfgen_family; |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 1864 | struct nf_conntrack_zone zone; |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 1865 | int err; |
| 1866 | |
| 1867 | err = ctnetlink_parse_zone(cda[CTA_ZONE], &zone); |
| 1868 | if (err < 0) |
| 1869 | return err; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1870 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1871 | if (cda[CTA_TUPLE_ORIG]) { |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 1872 | err = ctnetlink_parse_tuple(cda, &otuple, CTA_TUPLE_ORIG, |
| 1873 | u3, &zone); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1874 | if (err < 0) |
| 1875 | return err; |
| 1876 | } |
| 1877 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1878 | if (cda[CTA_TUPLE_REPLY]) { |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 1879 | err = ctnetlink_parse_tuple(cda, &rtuple, CTA_TUPLE_REPLY, |
| 1880 | u3, &zone); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1881 | if (err < 0) |
| 1882 | return err; |
| 1883 | } |
| 1884 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1885 | if (cda[CTA_TUPLE_ORIG]) |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 1886 | h = nf_conntrack_find_get(net, &zone, &otuple); |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1887 | else if (cda[CTA_TUPLE_REPLY]) |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 1888 | h = nf_conntrack_find_get(net, &zone, &rtuple); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1889 | |
| 1890 | if (h == NULL) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1891 | err = -ENOENT; |
Pablo Neira Ayuso | f0a3c08 | 2009-03-16 15:28:09 +0100 | [diff] [blame] | 1892 | if (nlh->nlmsg_flags & NLM_F_CREATE) { |
Pablo Neira Ayuso | fecc113 | 2009-05-05 17:48:26 +0200 | [diff] [blame] | 1893 | enum ip_conntrack_events events; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1894 | |
Florian Westphal | 442fad9 | 2013-02-11 23:22:38 +0000 | [diff] [blame] | 1895 | if (!cda[CTA_TUPLE_ORIG] || !cda[CTA_TUPLE_REPLY]) |
| 1896 | return -EINVAL; |
| 1897 | |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 1898 | ct = ctnetlink_create_conntrack(net, &zone, cda, &otuple, |
Pablo Neira Ayuso | f0a3c08 | 2009-03-16 15:28:09 +0100 | [diff] [blame] | 1899 | &rtuple, u3); |
Jozsef Kadlecsik | 7d367e0 | 2012-02-24 11:45:49 +0100 | [diff] [blame] | 1900 | if (IS_ERR(ct)) |
| 1901 | return PTR_ERR(ct); |
| 1902 | |
Pablo Neira Ayuso | f0a3c08 | 2009-03-16 15:28:09 +0100 | [diff] [blame] | 1903 | err = 0; |
Pablo Neira Ayuso | fecc113 | 2009-05-05 17:48:26 +0200 | [diff] [blame] | 1904 | if (test_bit(IPS_EXPECTED_BIT, &ct->status)) |
| 1905 | events = IPCT_RELATED; |
| 1906 | else |
| 1907 | events = IPCT_NEW; |
| 1908 | |
Florian Westphal | 9b21f6a | 2013-01-11 06:30:46 +0000 | [diff] [blame] | 1909 | if (cda[CTA_LABELS] && |
| 1910 | ctnetlink_attach_labels(ct, cda) == 0) |
| 1911 | events |= (1 << IPCT_LABEL); |
| 1912 | |
Patrick McHardy | 858b3133 | 2010-02-03 13:48:53 +0100 | [diff] [blame] | 1913 | nf_conntrack_eventmask_report((1 << IPCT_REPLY) | |
| 1914 | (1 << IPCT_ASSURED) | |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 1915 | (1 << IPCT_HELPER) | |
| 1916 | (1 << IPCT_PROTOINFO) | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1917 | (1 << IPCT_SEQADJ) | |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 1918 | (1 << IPCT_MARK) | events, |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 1919 | ct, NETLINK_CB(skb).portid, |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 1920 | nlmsg_report(nlh)); |
Pablo Neira Ayuso | f0a3c08 | 2009-03-16 15:28:09 +0100 | [diff] [blame] | 1921 | nf_ct_put(ct); |
Jozsef Kadlecsik | 7d367e0 | 2012-02-24 11:45:49 +0100 | [diff] [blame] | 1922 | } |
Pablo Neira Ayuso | 5faa1f4 | 2007-09-28 14:43:53 -0700 | [diff] [blame] | 1923 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1924 | return err; |
| 1925 | } |
| 1926 | /* implicit 'else' */ |
| 1927 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1928 | err = -EEXIST; |
Jozsef Kadlecsik | 7d367e0 | 2012-02-24 11:45:49 +0100 | [diff] [blame] | 1929 | ct = nf_ct_tuplehash_to_ctrack(h); |
Pablo Neira Ayuso | ff4ca82 | 2007-08-07 18:11:26 -0700 | [diff] [blame] | 1930 | if (!(nlh->nlmsg_flags & NLM_F_EXCL)) { |
Jesper Dangaard Brouer | ca7433d | 2014-03-03 14:46:01 +0100 | [diff] [blame] | 1931 | spin_lock_bh(&nf_conntrack_expect_lock); |
Pablo Neira Ayuso | 19abb7b | 2008-11-18 11:56:20 +0100 | [diff] [blame] | 1932 | err = ctnetlink_change_conntrack(ct, cda); |
Jesper Dangaard Brouer | ca7433d | 2014-03-03 14:46:01 +0100 | [diff] [blame] | 1933 | spin_unlock_bh(&nf_conntrack_expect_lock); |
Pablo Neira Ayuso | 19abb7b | 2008-11-18 11:56:20 +0100 | [diff] [blame] | 1934 | if (err == 0) { |
Patrick McHardy | 858b3133 | 2010-02-03 13:48:53 +0100 | [diff] [blame] | 1935 | nf_conntrack_eventmask_report((1 << IPCT_REPLY) | |
| 1936 | (1 << IPCT_ASSURED) | |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 1937 | (1 << IPCT_HELPER) | |
Florian Westphal | 797a7d6 | 2013-06-21 16:51:30 +0200 | [diff] [blame] | 1938 | (1 << IPCT_LABEL) | |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 1939 | (1 << IPCT_PROTOINFO) | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1940 | (1 << IPCT_SEQADJ) | |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 1941 | (1 << IPCT_MARK), |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 1942 | ct, NETLINK_CB(skb).portid, |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 1943 | nlmsg_report(nlh)); |
Jozsef Kadlecsik | 7d367e0 | 2012-02-24 11:45:49 +0100 | [diff] [blame] | 1944 | } |
Pablo Neira Ayuso | ff4ca82 | 2007-08-07 18:11:26 -0700 | [diff] [blame] | 1945 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1946 | |
Jozsef Kadlecsik | 7d367e0 | 2012-02-24 11:45:49 +0100 | [diff] [blame] | 1947 | nf_ct_put(ct); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1948 | return err; |
| 1949 | } |
| 1950 | |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 1951 | static int |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 1952 | 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] | 1953 | __u16 cpu, const struct ip_conntrack_stat *st) |
| 1954 | { |
| 1955 | struct nlmsghdr *nlh; |
| 1956 | struct nfgenmsg *nfmsg; |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 1957 | unsigned int flags = portid ? NLM_F_MULTI : 0, event; |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 1958 | |
| 1959 | event = (NFNL_SUBSYS_CTNETLINK << 8 | IPCTNL_MSG_CT_GET_STATS_CPU); |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 1960 | nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags); |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 1961 | if (nlh == NULL) |
| 1962 | goto nlmsg_failure; |
| 1963 | |
| 1964 | nfmsg = nlmsg_data(nlh); |
| 1965 | nfmsg->nfgen_family = AF_UNSPEC; |
| 1966 | nfmsg->version = NFNETLINK_V0; |
| 1967 | nfmsg->res_id = htons(cpu); |
| 1968 | |
| 1969 | if (nla_put_be32(skb, CTA_STATS_SEARCHED, htonl(st->searched)) || |
| 1970 | nla_put_be32(skb, CTA_STATS_FOUND, htonl(st->found)) || |
| 1971 | nla_put_be32(skb, CTA_STATS_NEW, htonl(st->new)) || |
| 1972 | nla_put_be32(skb, CTA_STATS_INVALID, htonl(st->invalid)) || |
| 1973 | nla_put_be32(skb, CTA_STATS_IGNORE, htonl(st->ignore)) || |
| 1974 | nla_put_be32(skb, CTA_STATS_DELETE, htonl(st->delete)) || |
| 1975 | nla_put_be32(skb, CTA_STATS_DELETE_LIST, htonl(st->delete_list)) || |
| 1976 | nla_put_be32(skb, CTA_STATS_INSERT, htonl(st->insert)) || |
| 1977 | nla_put_be32(skb, CTA_STATS_INSERT_FAILED, |
| 1978 | htonl(st->insert_failed)) || |
| 1979 | nla_put_be32(skb, CTA_STATS_DROP, htonl(st->drop)) || |
| 1980 | nla_put_be32(skb, CTA_STATS_EARLY_DROP, htonl(st->early_drop)) || |
| 1981 | nla_put_be32(skb, CTA_STATS_ERROR, htonl(st->error)) || |
| 1982 | nla_put_be32(skb, CTA_STATS_SEARCH_RESTART, |
| 1983 | htonl(st->search_restart))) |
| 1984 | goto nla_put_failure; |
| 1985 | |
| 1986 | nlmsg_end(skb, nlh); |
| 1987 | return skb->len; |
| 1988 | |
| 1989 | nla_put_failure: |
| 1990 | nlmsg_failure: |
| 1991 | nlmsg_cancel(skb, nlh); |
| 1992 | return -1; |
| 1993 | } |
| 1994 | |
| 1995 | static int |
| 1996 | ctnetlink_ct_stat_cpu_dump(struct sk_buff *skb, struct netlink_callback *cb) |
| 1997 | { |
| 1998 | int cpu; |
| 1999 | struct net *net = sock_net(skb->sk); |
| 2000 | |
| 2001 | if (cb->args[0] == nr_cpu_ids) |
| 2002 | return 0; |
| 2003 | |
| 2004 | for (cpu = cb->args[0]; cpu < nr_cpu_ids; cpu++) { |
| 2005 | const struct ip_conntrack_stat *st; |
| 2006 | |
| 2007 | if (!cpu_possible(cpu)) |
| 2008 | continue; |
| 2009 | |
| 2010 | st = per_cpu_ptr(net->ct.stat, cpu); |
| 2011 | if (ctnetlink_ct_stat_cpu_fill_info(skb, |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2012 | NETLINK_CB(cb->skb).portid, |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 2013 | cb->nlh->nlmsg_seq, |
| 2014 | cpu, st) < 0) |
| 2015 | break; |
| 2016 | } |
| 2017 | cb->args[0] = cpu; |
| 2018 | |
| 2019 | return skb->len; |
| 2020 | } |
| 2021 | |
Pablo Neira Ayuso | 7b8002a | 2015-12-15 18:41:56 +0100 | [diff] [blame] | 2022 | static int ctnetlink_stat_ct_cpu(struct net *net, struct sock *ctnl, |
| 2023 | struct sk_buff *skb, |
| 2024 | const struct nlmsghdr *nlh, |
| 2025 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 2026 | { |
| 2027 | if (nlh->nlmsg_flags & NLM_F_DUMP) { |
| 2028 | struct netlink_dump_control c = { |
| 2029 | .dump = ctnetlink_ct_stat_cpu_dump, |
| 2030 | }; |
| 2031 | return netlink_dump_start(ctnl, skb, nlh, &c); |
| 2032 | } |
| 2033 | |
| 2034 | return 0; |
| 2035 | } |
| 2036 | |
| 2037 | static int |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2038 | 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] | 2039 | struct net *net) |
| 2040 | { |
| 2041 | struct nlmsghdr *nlh; |
| 2042 | struct nfgenmsg *nfmsg; |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2043 | unsigned int flags = portid ? NLM_F_MULTI : 0, event; |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 2044 | unsigned int nr_conntracks = atomic_read(&net->ct.count); |
| 2045 | |
| 2046 | event = (NFNL_SUBSYS_CTNETLINK << 8 | IPCTNL_MSG_CT_GET_STATS); |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2047 | nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags); |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 2048 | if (nlh == NULL) |
| 2049 | goto nlmsg_failure; |
| 2050 | |
| 2051 | nfmsg = nlmsg_data(nlh); |
| 2052 | nfmsg->nfgen_family = AF_UNSPEC; |
| 2053 | nfmsg->version = NFNETLINK_V0; |
| 2054 | nfmsg->res_id = 0; |
| 2055 | |
| 2056 | if (nla_put_be32(skb, CTA_STATS_GLOBAL_ENTRIES, htonl(nr_conntracks))) |
| 2057 | goto nla_put_failure; |
| 2058 | |
| 2059 | nlmsg_end(skb, nlh); |
| 2060 | return skb->len; |
| 2061 | |
| 2062 | nla_put_failure: |
| 2063 | nlmsg_failure: |
| 2064 | nlmsg_cancel(skb, nlh); |
| 2065 | return -1; |
| 2066 | } |
| 2067 | |
Pablo Neira Ayuso | 7b8002a | 2015-12-15 18:41:56 +0100 | [diff] [blame] | 2068 | static int ctnetlink_stat_ct(struct net *net, struct sock *ctnl, |
| 2069 | struct sk_buff *skb, const struct nlmsghdr *nlh, |
| 2070 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 2071 | { |
| 2072 | struct sk_buff *skb2; |
| 2073 | int err; |
| 2074 | |
| 2075 | skb2 = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| 2076 | if (skb2 == NULL) |
| 2077 | return -ENOMEM; |
| 2078 | |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2079 | err = ctnetlink_stat_ct_fill_info(skb2, NETLINK_CB(skb).portid, |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 2080 | nlh->nlmsg_seq, |
| 2081 | NFNL_MSG_TYPE(nlh->nlmsg_type), |
| 2082 | sock_net(skb->sk)); |
| 2083 | if (err <= 0) |
| 2084 | goto free; |
| 2085 | |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2086 | err = netlink_unicast(ctnl, skb2, NETLINK_CB(skb).portid, MSG_DONTWAIT); |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 2087 | if (err < 0) |
| 2088 | goto out; |
| 2089 | |
| 2090 | return 0; |
| 2091 | |
| 2092 | free: |
| 2093 | kfree_skb(skb2); |
| 2094 | out: |
| 2095 | /* this avoids a loop in nfnetlink. */ |
| 2096 | return err == -EAGAIN ? -ENOBUFS : err; |
| 2097 | } |
| 2098 | |
Pablo Neira Ayuso | bd07793 | 2013-08-07 18:13:20 +0200 | [diff] [blame] | 2099 | static const struct nla_policy exp_nla_policy[CTA_EXPECT_MAX+1] = { |
| 2100 | [CTA_EXPECT_MASTER] = { .type = NLA_NESTED }, |
| 2101 | [CTA_EXPECT_TUPLE] = { .type = NLA_NESTED }, |
| 2102 | [CTA_EXPECT_MASK] = { .type = NLA_NESTED }, |
| 2103 | [CTA_EXPECT_TIMEOUT] = { .type = NLA_U32 }, |
| 2104 | [CTA_EXPECT_ID] = { .type = NLA_U32 }, |
| 2105 | [CTA_EXPECT_HELP_NAME] = { .type = NLA_NUL_STRING, |
| 2106 | .len = NF_CT_HELPER_NAME_LEN - 1 }, |
| 2107 | [CTA_EXPECT_ZONE] = { .type = NLA_U16 }, |
| 2108 | [CTA_EXPECT_FLAGS] = { .type = NLA_U32 }, |
| 2109 | [CTA_EXPECT_CLASS] = { .type = NLA_U32 }, |
| 2110 | [CTA_EXPECT_NAT] = { .type = NLA_NESTED }, |
| 2111 | [CTA_EXPECT_FN] = { .type = NLA_NUL_STRING }, |
| 2112 | }; |
| 2113 | |
| 2114 | static struct nf_conntrack_expect * |
| 2115 | ctnetlink_alloc_expect(const struct nlattr *const cda[], struct nf_conn *ct, |
| 2116 | struct nf_conntrack_helper *helper, |
| 2117 | struct nf_conntrack_tuple *tuple, |
| 2118 | struct nf_conntrack_tuple *mask); |
| 2119 | |
Ken-ichirou MATSUZAWA | 83f3e94 | 2015-10-05 11:48:47 +0900 | [diff] [blame] | 2120 | #ifdef CONFIG_NETFILTER_NETLINK_GLUE_CT |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2121 | static size_t |
Ken-ichirou MATSUZAWA | a4b4766 | 2015-10-05 11:47:13 +0900 | [diff] [blame] | 2122 | ctnetlink_glue_build_size(const struct nf_conn *ct) |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2123 | { |
| 2124 | return 3 * nla_total_size(0) /* CTA_TUPLE_ORIG|REPL|MASTER */ |
| 2125 | + 3 * nla_total_size(0) /* CTA_TUPLE_IP */ |
| 2126 | + 3 * nla_total_size(0) /* CTA_TUPLE_PROTO */ |
| 2127 | + 3 * nla_total_size(sizeof(u_int8_t)) /* CTA_PROTO_NUM */ |
| 2128 | + nla_total_size(sizeof(u_int32_t)) /* CTA_ID */ |
| 2129 | + nla_total_size(sizeof(u_int32_t)) /* CTA_STATUS */ |
| 2130 | + nla_total_size(sizeof(u_int32_t)) /* CTA_TIMEOUT */ |
| 2131 | + nla_total_size(0) /* CTA_PROTOINFO */ |
| 2132 | + nla_total_size(0) /* CTA_HELP */ |
| 2133 | + nla_total_size(NF_CT_HELPER_NAME_LEN) /* CTA_HELP_NAME */ |
| 2134 | + ctnetlink_secctx_size(ct) |
| 2135 | #ifdef CONFIG_NF_NAT_NEEDED |
| 2136 | + 2 * nla_total_size(0) /* CTA_NAT_SEQ_ADJ_ORIG|REPL */ |
| 2137 | + 6 * nla_total_size(sizeof(u_int32_t)) /* CTA_NAT_SEQ_OFFSET */ |
| 2138 | #endif |
| 2139 | #ifdef CONFIG_NF_CONNTRACK_MARK |
| 2140 | + nla_total_size(sizeof(u_int32_t)) /* CTA_MARK */ |
| 2141 | #endif |
Ken-ichirou MATSUZAWA | 4a00106 | 2014-06-16 13:52:34 +0200 | [diff] [blame] | 2142 | #ifdef CONFIG_NF_CONNTRACK_ZONES |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 2143 | + 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] | 2144 | #endif |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2145 | + ctnetlink_proto_size(ct) |
| 2146 | ; |
| 2147 | } |
| 2148 | |
Ken-ichirou MATSUZAWA | 224a059 | 2015-10-05 11:49:56 +0900 | [diff] [blame] | 2149 | 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] | 2150 | enum ip_conntrack_info *ctinfo) |
Pablo Neira Ayuso | b7bd180 | 2015-09-30 22:53:44 +0100 | [diff] [blame] | 2151 | { |
| 2152 | struct nf_conn *ct; |
| 2153 | |
| 2154 | ct = nf_ct_get(skb, ctinfo); |
| 2155 | if (ct && nf_ct_is_untracked(ct)) |
| 2156 | ct = NULL; |
| 2157 | |
| 2158 | return ct; |
| 2159 | } |
| 2160 | |
Ken-ichirou MATSUZAWA | a4b4766 | 2015-10-05 11:47:13 +0900 | [diff] [blame] | 2161 | 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] | 2162 | { |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 2163 | const struct nf_conntrack_zone *zone; |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2164 | struct nlattr *nest_parms; |
| 2165 | |
| 2166 | rcu_read_lock(); |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 2167 | zone = nf_ct_zone(ct); |
| 2168 | |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2169 | nest_parms = nla_nest_start(skb, CTA_TUPLE_ORIG | NLA_F_NESTED); |
| 2170 | if (!nest_parms) |
| 2171 | goto nla_put_failure; |
| 2172 | if (ctnetlink_dump_tuples(skb, nf_ct_tuple(ct, IP_CT_DIR_ORIGINAL)) < 0) |
| 2173 | goto nla_put_failure; |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 2174 | if (ctnetlink_dump_zone_id(skb, CTA_TUPLE_ZONE, zone, |
| 2175 | NF_CT_ZONE_DIR_ORIG) < 0) |
| 2176 | goto nla_put_failure; |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2177 | nla_nest_end(skb, nest_parms); |
| 2178 | |
| 2179 | nest_parms = nla_nest_start(skb, CTA_TUPLE_REPLY | NLA_F_NESTED); |
| 2180 | if (!nest_parms) |
| 2181 | goto nla_put_failure; |
| 2182 | if (ctnetlink_dump_tuples(skb, nf_ct_tuple(ct, IP_CT_DIR_REPLY)) < 0) |
| 2183 | goto nla_put_failure; |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 2184 | if (ctnetlink_dump_zone_id(skb, CTA_TUPLE_ZONE, zone, |
| 2185 | NF_CT_ZONE_DIR_REPL) < 0) |
| 2186 | goto nla_put_failure; |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2187 | nla_nest_end(skb, nest_parms); |
| 2188 | |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 2189 | if (ctnetlink_dump_zone_id(skb, CTA_ZONE, zone, |
| 2190 | NF_CT_DEFAULT_ZONE_DIR) < 0) |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 2191 | goto nla_put_failure; |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2192 | |
| 2193 | if (ctnetlink_dump_id(skb, ct) < 0) |
| 2194 | goto nla_put_failure; |
| 2195 | |
| 2196 | if (ctnetlink_dump_status(skb, ct) < 0) |
| 2197 | goto nla_put_failure; |
| 2198 | |
| 2199 | if (ctnetlink_dump_timeout(skb, ct) < 0) |
| 2200 | goto nla_put_failure; |
| 2201 | |
| 2202 | if (ctnetlink_dump_protoinfo(skb, ct) < 0) |
| 2203 | goto nla_put_failure; |
| 2204 | |
| 2205 | if (ctnetlink_dump_helpinfo(skb, ct) < 0) |
| 2206 | goto nla_put_failure; |
| 2207 | |
| 2208 | #ifdef CONFIG_NF_CONNTRACK_SECMARK |
| 2209 | if (ct->secmark && ctnetlink_dump_secctx(skb, ct) < 0) |
| 2210 | goto nla_put_failure; |
| 2211 | #endif |
| 2212 | if (ct->master && ctnetlink_dump_master(skb, ct) < 0) |
| 2213 | goto nla_put_failure; |
| 2214 | |
| 2215 | if ((ct->status & IPS_SEQ_ADJUST) && |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 2216 | ctnetlink_dump_ct_seq_adj(skb, ct) < 0) |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2217 | goto nla_put_failure; |
| 2218 | |
| 2219 | #ifdef CONFIG_NF_CONNTRACK_MARK |
| 2220 | if (ct->mark && ctnetlink_dump_mark(skb, ct) < 0) |
| 2221 | goto nla_put_failure; |
| 2222 | #endif |
Florian Westphal | 0ceabd8 | 2013-01-11 06:30:45 +0000 | [diff] [blame] | 2223 | if (ctnetlink_dump_labels(skb, ct) < 0) |
| 2224 | goto nla_put_failure; |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2225 | rcu_read_unlock(); |
| 2226 | return 0; |
| 2227 | |
| 2228 | nla_put_failure: |
| 2229 | rcu_read_unlock(); |
| 2230 | return -ENOSPC; |
| 2231 | } |
| 2232 | |
| 2233 | static int |
Ken-ichirou MATSUZAWA | a4b4766 | 2015-10-05 11:47:13 +0900 | [diff] [blame] | 2234 | ctnetlink_glue_build(struct sk_buff *skb, struct nf_conn *ct, |
| 2235 | enum ip_conntrack_info ctinfo, |
| 2236 | u_int16_t ct_attr, u_int16_t ct_info_attr) |
Pablo Neira Ayuso | b7bd180 | 2015-09-30 22:53:44 +0100 | [diff] [blame] | 2237 | { |
| 2238 | struct nlattr *nest_parms; |
| 2239 | |
| 2240 | nest_parms = nla_nest_start(skb, ct_attr | NLA_F_NESTED); |
| 2241 | if (!nest_parms) |
| 2242 | goto nla_put_failure; |
| 2243 | |
Ken-ichirou MATSUZAWA | a4b4766 | 2015-10-05 11:47:13 +0900 | [diff] [blame] | 2244 | if (__ctnetlink_glue_build(skb, ct) < 0) |
Pablo Neira Ayuso | b7bd180 | 2015-09-30 22:53:44 +0100 | [diff] [blame] | 2245 | goto nla_put_failure; |
| 2246 | |
| 2247 | nla_nest_end(skb, nest_parms); |
| 2248 | |
| 2249 | if (nla_put_be32(skb, ct_info_attr, htonl(ctinfo))) |
| 2250 | goto nla_put_failure; |
| 2251 | |
| 2252 | return 0; |
| 2253 | |
| 2254 | nla_put_failure: |
| 2255 | return -ENOSPC; |
| 2256 | } |
| 2257 | |
| 2258 | static int |
Ken-ichirou MATSUZAWA | a4b4766 | 2015-10-05 11:47:13 +0900 | [diff] [blame] | 2259 | 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] | 2260 | { |
| 2261 | int err; |
| 2262 | |
| 2263 | if (cda[CTA_TIMEOUT]) { |
| 2264 | err = ctnetlink_change_timeout(ct, cda); |
| 2265 | if (err < 0) |
| 2266 | return err; |
| 2267 | } |
| 2268 | if (cda[CTA_STATUS]) { |
| 2269 | err = ctnetlink_change_status(ct, cda); |
| 2270 | if (err < 0) |
| 2271 | return err; |
| 2272 | } |
| 2273 | if (cda[CTA_HELP]) { |
| 2274 | err = ctnetlink_change_helper(ct, cda); |
| 2275 | if (err < 0) |
| 2276 | return err; |
| 2277 | } |
Florian Westphal | 9b21f6a | 2013-01-11 06:30:46 +0000 | [diff] [blame] | 2278 | if (cda[CTA_LABELS]) { |
| 2279 | err = ctnetlink_attach_labels(ct, cda); |
| 2280 | if (err < 0) |
| 2281 | return err; |
| 2282 | } |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2283 | #if defined(CONFIG_NF_CONNTRACK_MARK) |
Florian Westphal | 534473c | 2013-12-19 18:25:15 +0100 | [diff] [blame] | 2284 | if (cda[CTA_MARK]) { |
| 2285 | u32 mask = 0, mark, newmark; |
| 2286 | if (cda[CTA_MARK_MASK]) |
| 2287 | mask = ~ntohl(nla_get_be32(cda[CTA_MARK_MASK])); |
| 2288 | |
| 2289 | mark = ntohl(nla_get_be32(cda[CTA_MARK])); |
| 2290 | newmark = (ct->mark & mask) ^ mark; |
| 2291 | if (newmark != ct->mark) |
| 2292 | ct->mark = newmark; |
| 2293 | } |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2294 | #endif |
| 2295 | return 0; |
| 2296 | } |
| 2297 | |
| 2298 | static int |
Ken-ichirou MATSUZAWA | a4b4766 | 2015-10-05 11:47:13 +0900 | [diff] [blame] | 2299 | ctnetlink_glue_parse(const struct nlattr *attr, struct nf_conn *ct) |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2300 | { |
| 2301 | struct nlattr *cda[CTA_MAX+1]; |
Pablo Neira Ayuso | 68e035c | 2012-08-14 12:47:37 +0200 | [diff] [blame] | 2302 | int ret; |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2303 | |
Daniel Borkmann | 130ffbc | 2013-06-12 17:54:51 +0200 | [diff] [blame] | 2304 | ret = nla_parse_nested(cda, CTA_MAX, attr, ct_nla_policy); |
| 2305 | if (ret < 0) |
| 2306 | return ret; |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2307 | |
Jesper Dangaard Brouer | ca7433d | 2014-03-03 14:46:01 +0100 | [diff] [blame] | 2308 | spin_lock_bh(&nf_conntrack_expect_lock); |
Ken-ichirou MATSUZAWA | a4b4766 | 2015-10-05 11:47:13 +0900 | [diff] [blame] | 2309 | ret = ctnetlink_glue_parse_ct((const struct nlattr **)cda, ct); |
Jesper Dangaard Brouer | ca7433d | 2014-03-03 14:46:01 +0100 | [diff] [blame] | 2310 | spin_unlock_bh(&nf_conntrack_expect_lock); |
Pablo Neira Ayuso | 68e035c | 2012-08-14 12:47:37 +0200 | [diff] [blame] | 2311 | |
| 2312 | return ret; |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2313 | } |
| 2314 | |
Ken-ichirou MATSUZAWA | a4b4766 | 2015-10-05 11:47:13 +0900 | [diff] [blame] | 2315 | static int ctnetlink_glue_exp_parse(const struct nlattr * const *cda, |
| 2316 | const struct nf_conn *ct, |
| 2317 | struct nf_conntrack_tuple *tuple, |
| 2318 | struct nf_conntrack_tuple *mask) |
Pablo Neira Ayuso | bd07793 | 2013-08-07 18:13:20 +0200 | [diff] [blame] | 2319 | { |
| 2320 | int err; |
| 2321 | |
| 2322 | err = ctnetlink_parse_tuple(cda, tuple, CTA_EXPECT_TUPLE, |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 2323 | nf_ct_l3num(ct), NULL); |
Pablo Neira Ayuso | bd07793 | 2013-08-07 18:13:20 +0200 | [diff] [blame] | 2324 | if (err < 0) |
| 2325 | return err; |
| 2326 | |
| 2327 | return ctnetlink_parse_tuple(cda, mask, CTA_EXPECT_MASK, |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 2328 | nf_ct_l3num(ct), NULL); |
Pablo Neira Ayuso | bd07793 | 2013-08-07 18:13:20 +0200 | [diff] [blame] | 2329 | } |
| 2330 | |
| 2331 | static int |
Ken-ichirou MATSUZAWA | a4b4766 | 2015-10-05 11:47:13 +0900 | [diff] [blame] | 2332 | ctnetlink_glue_attach_expect(const struct nlattr *attr, struct nf_conn *ct, |
| 2333 | u32 portid, u32 report) |
Pablo Neira Ayuso | bd07793 | 2013-08-07 18:13:20 +0200 | [diff] [blame] | 2334 | { |
| 2335 | struct nlattr *cda[CTA_EXPECT_MAX+1]; |
| 2336 | struct nf_conntrack_tuple tuple, mask; |
Florian Westphal | b7e092c | 2013-08-27 11:47:26 +0200 | [diff] [blame] | 2337 | struct nf_conntrack_helper *helper = NULL; |
Pablo Neira Ayuso | bd07793 | 2013-08-07 18:13:20 +0200 | [diff] [blame] | 2338 | struct nf_conntrack_expect *exp; |
| 2339 | int err; |
| 2340 | |
| 2341 | err = nla_parse_nested(cda, CTA_EXPECT_MAX, attr, exp_nla_policy); |
| 2342 | if (err < 0) |
| 2343 | return err; |
| 2344 | |
Ken-ichirou MATSUZAWA | a4b4766 | 2015-10-05 11:47:13 +0900 | [diff] [blame] | 2345 | err = ctnetlink_glue_exp_parse((const struct nlattr * const *)cda, |
| 2346 | ct, &tuple, &mask); |
Pablo Neira Ayuso | bd07793 | 2013-08-07 18:13:20 +0200 | [diff] [blame] | 2347 | if (err < 0) |
| 2348 | return err; |
| 2349 | |
| 2350 | if (cda[CTA_EXPECT_HELP_NAME]) { |
| 2351 | const char *helpname = nla_data(cda[CTA_EXPECT_HELP_NAME]); |
| 2352 | |
| 2353 | helper = __nf_conntrack_helper_find(helpname, nf_ct_l3num(ct), |
| 2354 | nf_ct_protonum(ct)); |
| 2355 | if (helper == NULL) |
| 2356 | return -EOPNOTSUPP; |
| 2357 | } |
| 2358 | |
| 2359 | exp = ctnetlink_alloc_expect((const struct nlattr * const *)cda, ct, |
| 2360 | helper, &tuple, &mask); |
| 2361 | if (IS_ERR(exp)) |
| 2362 | return PTR_ERR(exp); |
| 2363 | |
| 2364 | err = nf_ct_expect_related_report(exp, portid, report); |
Liping Zhang | b18bcb0 | 2016-08-08 22:03:40 +0800 | [diff] [blame^] | 2365 | nf_ct_expect_put(exp); |
| 2366 | return err; |
Pablo Neira Ayuso | bd07793 | 2013-08-07 18:13:20 +0200 | [diff] [blame] | 2367 | } |
| 2368 | |
Ken-ichirou MATSUZAWA | a4b4766 | 2015-10-05 11:47:13 +0900 | [diff] [blame] | 2369 | static void ctnetlink_glue_seqadj(struct sk_buff *skb, struct nf_conn *ct, |
| 2370 | enum ip_conntrack_info ctinfo, int diff) |
Pablo Neira Ayuso | b7bd180 | 2015-09-30 22:53:44 +0100 | [diff] [blame] | 2371 | { |
| 2372 | if (!(ct->status & IPS_NAT_MASK)) |
| 2373 | return; |
| 2374 | |
| 2375 | nf_ct_tcp_seqadj_set(skb, ct, ctinfo, diff); |
| 2376 | } |
| 2377 | |
Ken-ichirou MATSUZAWA | a4b4766 | 2015-10-05 11:47:13 +0900 | [diff] [blame] | 2378 | static struct nfnl_ct_hook ctnetlink_glue_hook = { |
| 2379 | .get_ct = ctnetlink_glue_get_ct, |
| 2380 | .build_size = ctnetlink_glue_build_size, |
| 2381 | .build = ctnetlink_glue_build, |
| 2382 | .parse = ctnetlink_glue_parse, |
| 2383 | .attach_expect = ctnetlink_glue_attach_expect, |
| 2384 | .seq_adjust = ctnetlink_glue_seqadj, |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2385 | }; |
Ken-ichirou MATSUZAWA | 83f3e94 | 2015-10-05 11:48:47 +0900 | [diff] [blame] | 2386 | #endif /* CONFIG_NETFILTER_NETLINK_GLUE_CT */ |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2387 | |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 2388 | /*********************************************************************** |
| 2389 | * EXPECT |
| 2390 | ***********************************************************************/ |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2391 | |
Pablo Neira Ayuso | 4054ff4 | 2016-04-12 23:32:34 +0200 | [diff] [blame] | 2392 | static int ctnetlink_exp_dump_tuple(struct sk_buff *skb, |
| 2393 | const struct nf_conntrack_tuple *tuple, |
| 2394 | enum ctattr_expect type) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2395 | { |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2396 | struct nlattr *nest_parms; |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 2397 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2398 | nest_parms = nla_nest_start(skb, type | NLA_F_NESTED); |
| 2399 | if (!nest_parms) |
| 2400 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2401 | if (ctnetlink_dump_tuples(skb, tuple) < 0) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2402 | goto nla_put_failure; |
| 2403 | nla_nest_end(skb, nest_parms); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2404 | |
| 2405 | return 0; |
| 2406 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2407 | nla_put_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2408 | return -1; |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 2409 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2410 | |
Pablo Neira Ayuso | 4054ff4 | 2016-04-12 23:32:34 +0200 | [diff] [blame] | 2411 | static int ctnetlink_exp_dump_mask(struct sk_buff *skb, |
| 2412 | const struct nf_conntrack_tuple *tuple, |
| 2413 | const struct nf_conntrack_tuple_mask *mask) |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 2414 | { |
| 2415 | int ret; |
| 2416 | struct nf_conntrack_l3proto *l3proto; |
Martin Josefsson | 605dcad | 2006-11-29 02:35:06 +0100 | [diff] [blame] | 2417 | struct nf_conntrack_l4proto *l4proto; |
Patrick McHardy | d4156e8 | 2007-07-07 22:31:32 -0700 | [diff] [blame] | 2418 | struct nf_conntrack_tuple m; |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2419 | struct nlattr *nest_parms; |
Patrick McHardy | d4156e8 | 2007-07-07 22:31:32 -0700 | [diff] [blame] | 2420 | |
| 2421 | memset(&m, 0xFF, sizeof(m)); |
Patrick McHardy | d4156e8 | 2007-07-07 22:31:32 -0700 | [diff] [blame] | 2422 | memcpy(&m.src.u3, &mask->src.u3, sizeof(m.src.u3)); |
Patrick McHardy | e578756 | 2010-01-26 17:04:02 +0100 | [diff] [blame] | 2423 | m.src.u.all = mask->src.u.all; |
| 2424 | m.dst.protonum = tuple->dst.protonum; |
Patrick McHardy | d4156e8 | 2007-07-07 22:31:32 -0700 | [diff] [blame] | 2425 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2426 | nest_parms = nla_nest_start(skb, CTA_EXPECT_MASK | NLA_F_NESTED); |
| 2427 | if (!nest_parms) |
| 2428 | goto nla_put_failure; |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 2429 | |
Hans Schillstrom | 3b988ec | 2012-03-05 02:24:29 +0000 | [diff] [blame] | 2430 | rcu_read_lock(); |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 2431 | l3proto = __nf_ct_l3proto_find(tuple->src.l3num); |
Patrick McHardy | d4156e8 | 2007-07-07 22:31:32 -0700 | [diff] [blame] | 2432 | ret = ctnetlink_dump_tuples_ip(skb, &m, l3proto); |
Hans Schillstrom | 3b988ec | 2012-03-05 02:24:29 +0000 | [diff] [blame] | 2433 | if (ret >= 0) { |
| 2434 | l4proto = __nf_ct_l4proto_find(tuple->src.l3num, |
| 2435 | tuple->dst.protonum); |
Patrick McHardy | d4156e8 | 2007-07-07 22:31:32 -0700 | [diff] [blame] | 2436 | ret = ctnetlink_dump_tuples_proto(skb, &m, l4proto); |
Hans Schillstrom | 3b988ec | 2012-03-05 02:24:29 +0000 | [diff] [blame] | 2437 | } |
| 2438 | rcu_read_unlock(); |
| 2439 | |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 2440 | if (unlikely(ret < 0)) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2441 | goto nla_put_failure; |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 2442 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2443 | nla_nest_end(skb, nest_parms); |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 2444 | |
| 2445 | return 0; |
| 2446 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2447 | nla_put_failure: |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 2448 | return -1; |
| 2449 | } |
| 2450 | |
Patrick McHardy | c7232c9 | 2012-08-26 19:14:06 +0200 | [diff] [blame] | 2451 | static const union nf_inet_addr any_addr; |
| 2452 | |
Ilpo Järvinen | bb5cf80 | 2008-01-05 23:11:31 -0800 | [diff] [blame] | 2453 | static int |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2454 | ctnetlink_exp_dump_expect(struct sk_buff *skb, |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 2455 | const struct nf_conntrack_expect *exp) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2456 | { |
| 2457 | struct nf_conn *master = exp->master; |
Xi Wang | c121638 | 2011-12-30 10:40:17 -0500 | [diff] [blame] | 2458 | long timeout = ((long)exp->timeout.expires - (long)jiffies) / HZ; |
Pablo Neira Ayuso | bc01befd | 2010-09-28 21:06:34 +0200 | [diff] [blame] | 2459 | struct nf_conn_help *help; |
Pablo Neira Ayuso | 076a0ca | 2012-02-05 03:41:52 +0100 | [diff] [blame] | 2460 | #ifdef CONFIG_NF_NAT_NEEDED |
| 2461 | struct nlattr *nest_parms; |
| 2462 | struct nf_conntrack_tuple nat_tuple = {}; |
| 2463 | #endif |
Pablo Neira Ayuso | 544d5c7 | 2012-02-05 03:44:51 +0100 | [diff] [blame] | 2464 | struct nf_ct_helper_expectfn *expfn; |
| 2465 | |
Patrick McHardy | d978e5d | 2007-12-17 22:37:03 -0800 | [diff] [blame] | 2466 | if (timeout < 0) |
| 2467 | timeout = 0; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2468 | |
| 2469 | if (ctnetlink_exp_dump_tuple(skb, &exp->tuple, CTA_EXPECT_TUPLE) < 0) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2470 | goto nla_put_failure; |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 2471 | if (ctnetlink_exp_dump_mask(skb, &exp->tuple, &exp->mask) < 0) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2472 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2473 | if (ctnetlink_exp_dump_tuple(skb, |
| 2474 | &master->tuplehash[IP_CT_DIR_ORIGINAL].tuple, |
| 2475 | CTA_EXPECT_MASTER) < 0) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2476 | goto nla_put_failure; |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 2477 | |
Pablo Neira Ayuso | 076a0ca | 2012-02-05 03:41:52 +0100 | [diff] [blame] | 2478 | #ifdef CONFIG_NF_NAT_NEEDED |
Patrick McHardy | c7232c9 | 2012-08-26 19:14:06 +0200 | [diff] [blame] | 2479 | if (!nf_inet_addr_cmp(&exp->saved_addr, &any_addr) || |
| 2480 | exp->saved_proto.all) { |
Pablo Neira Ayuso | 076a0ca | 2012-02-05 03:41:52 +0100 | [diff] [blame] | 2481 | nest_parms = nla_nest_start(skb, CTA_EXPECT_NAT | NLA_F_NESTED); |
| 2482 | if (!nest_parms) |
| 2483 | goto nla_put_failure; |
| 2484 | |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 2485 | if (nla_put_be32(skb, CTA_EXPECT_NAT_DIR, htonl(exp->dir))) |
| 2486 | goto nla_put_failure; |
Pablo Neira Ayuso | 076a0ca | 2012-02-05 03:41:52 +0100 | [diff] [blame] | 2487 | |
| 2488 | nat_tuple.src.l3num = nf_ct_l3num(master); |
Patrick McHardy | c7232c9 | 2012-08-26 19:14:06 +0200 | [diff] [blame] | 2489 | nat_tuple.src.u3 = exp->saved_addr; |
Pablo Neira Ayuso | 076a0ca | 2012-02-05 03:41:52 +0100 | [diff] [blame] | 2490 | nat_tuple.dst.protonum = nf_ct_protonum(master); |
| 2491 | nat_tuple.src.u = exp->saved_proto; |
| 2492 | |
| 2493 | if (ctnetlink_exp_dump_tuple(skb, &nat_tuple, |
| 2494 | CTA_EXPECT_NAT_TUPLE) < 0) |
| 2495 | goto nla_put_failure; |
| 2496 | nla_nest_end(skb, nest_parms); |
| 2497 | } |
| 2498 | #endif |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 2499 | if (nla_put_be32(skb, CTA_EXPECT_TIMEOUT, htonl(timeout)) || |
| 2500 | nla_put_be32(skb, CTA_EXPECT_ID, htonl((unsigned long)exp)) || |
| 2501 | nla_put_be32(skb, CTA_EXPECT_FLAGS, htonl(exp->flags)) || |
| 2502 | nla_put_be32(skb, CTA_EXPECT_CLASS, htonl(exp->class))) |
| 2503 | goto nla_put_failure; |
Pablo Neira Ayuso | bc01befd | 2010-09-28 21:06:34 +0200 | [diff] [blame] | 2504 | help = nfct_help(master); |
| 2505 | if (help) { |
| 2506 | struct nf_conntrack_helper *helper; |
| 2507 | |
| 2508 | helper = rcu_dereference(help->helper); |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 2509 | if (helper && |
| 2510 | nla_put_string(skb, CTA_EXPECT_HELP_NAME, helper->name)) |
| 2511 | goto nla_put_failure; |
Pablo Neira Ayuso | bc01befd | 2010-09-28 21:06:34 +0200 | [diff] [blame] | 2512 | } |
Pablo Neira Ayuso | 544d5c7 | 2012-02-05 03:44:51 +0100 | [diff] [blame] | 2513 | expfn = nf_ct_helper_expectfn_find_by_symbol(exp->expectfn); |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 2514 | if (expfn != NULL && |
| 2515 | nla_put_string(skb, CTA_EXPECT_FN, expfn->name)) |
| 2516 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2517 | |
| 2518 | return 0; |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 2519 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2520 | nla_put_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2521 | return -1; |
| 2522 | } |
| 2523 | |
| 2524 | static int |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2525 | 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] | 2526 | int event, const struct nf_conntrack_expect *exp) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2527 | { |
| 2528 | struct nlmsghdr *nlh; |
| 2529 | struct nfgenmsg *nfmsg; |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2530 | unsigned int flags = portid ? NLM_F_MULTI : 0; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2531 | |
| 2532 | event |= NFNL_SUBSYS_CTNETLINK_EXP << 8; |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2533 | nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags); |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2534 | if (nlh == NULL) |
| 2535 | goto nlmsg_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2536 | |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2537 | nfmsg = nlmsg_data(nlh); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2538 | nfmsg->nfgen_family = exp->tuple.src.l3num; |
| 2539 | nfmsg->version = NFNETLINK_V0; |
| 2540 | nfmsg->res_id = 0; |
| 2541 | |
| 2542 | if (ctnetlink_exp_dump_expect(skb, exp) < 0) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2543 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2544 | |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2545 | nlmsg_end(skb, nlh); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2546 | return skb->len; |
| 2547 | |
| 2548 | nlmsg_failure: |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2549 | nla_put_failure: |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2550 | nlmsg_cancel(skb, nlh); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2551 | return -1; |
| 2552 | } |
| 2553 | |
| 2554 | #ifdef CONFIG_NF_CONNTRACK_EVENTS |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 2555 | static int |
| 2556 | ctnetlink_expect_event(unsigned int events, struct nf_exp_event *item) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2557 | { |
Alexey Dobriyan | 9592a5c | 2010-01-13 16:04:18 +0100 | [diff] [blame] | 2558 | struct nf_conntrack_expect *exp = item->exp; |
| 2559 | struct net *net = nf_ct_exp_net(exp); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2560 | struct nlmsghdr *nlh; |
| 2561 | struct nfgenmsg *nfmsg; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2562 | struct sk_buff *skb; |
Pablo Neira Ayuso | ebbf41d | 2010-10-19 10:19:06 +0200 | [diff] [blame] | 2563 | unsigned int type, group; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2564 | int flags = 0; |
| 2565 | |
Pablo Neira Ayuso | ebbf41d | 2010-10-19 10:19:06 +0200 | [diff] [blame] | 2566 | if (events & (1 << IPEXP_DESTROY)) { |
| 2567 | type = IPCTNL_MSG_EXP_DELETE; |
| 2568 | group = NFNLGRP_CONNTRACK_EXP_DESTROY; |
| 2569 | } else if (events & (1 << IPEXP_NEW)) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2570 | type = IPCTNL_MSG_EXP_NEW; |
| 2571 | flags = NLM_F_CREATE|NLM_F_EXCL; |
Pablo Neira Ayuso | ebbf41d | 2010-10-19 10:19:06 +0200 | [diff] [blame] | 2572 | group = NFNLGRP_CONNTRACK_EXP_NEW; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2573 | } else |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 2574 | return 0; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2575 | |
Pablo Neira Ayuso | ebbf41d | 2010-10-19 10:19:06 +0200 | [diff] [blame] | 2576 | if (!item->report && !nfnetlink_has_listeners(net, group)) |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 2577 | return 0; |
Pablo Neira Ayuso | b3a27bf | 2006-08-22 00:32:05 -0700 | [diff] [blame] | 2578 | |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2579 | skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); |
| 2580 | if (skb == NULL) |
Pablo Neira Ayuso | 150ace0 | 2009-04-17 17:47:31 +0200 | [diff] [blame] | 2581 | goto errout; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2582 | |
Marcus Sundberg | b633ad5 | 2006-02-04 02:11:09 -0800 | [diff] [blame] | 2583 | type |= NFNL_SUBSYS_CTNETLINK_EXP << 8; |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2584 | nlh = nlmsg_put(skb, item->portid, 0, type, sizeof(*nfmsg), flags); |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2585 | if (nlh == NULL) |
| 2586 | goto nlmsg_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2587 | |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2588 | nfmsg = nlmsg_data(nlh); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2589 | nfmsg->nfgen_family = exp->tuple.src.l3num; |
| 2590 | nfmsg->version = NFNETLINK_V0; |
| 2591 | nfmsg->res_id = 0; |
| 2592 | |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 2593 | rcu_read_lock(); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2594 | if (ctnetlink_exp_dump_expect(skb, exp) < 0) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2595 | goto nla_put_failure; |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 2596 | rcu_read_unlock(); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2597 | |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2598 | nlmsg_end(skb, nlh); |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2599 | nfnetlink_send(skb, net, item->portid, group, item->report, GFP_ATOMIC); |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 2600 | return 0; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2601 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2602 | nla_put_failure: |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 2603 | rcu_read_unlock(); |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2604 | nlmsg_cancel(skb, nlh); |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 2605 | nlmsg_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2606 | kfree_skb(skb); |
Pablo Neira Ayuso | 150ace0 | 2009-04-17 17:47:31 +0200 | [diff] [blame] | 2607 | errout: |
Alexey Dobriyan | 9592a5c | 2010-01-13 16:04:18 +0100 | [diff] [blame] | 2608 | nfnetlink_set_err(net, 0, 0, -ENOBUFS); |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 2609 | return 0; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2610 | } |
| 2611 | #endif |
Patrick McHardy | cf6994c | 2007-07-07 22:32:34 -0700 | [diff] [blame] | 2612 | static int ctnetlink_exp_done(struct netlink_callback *cb) |
| 2613 | { |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2614 | if (cb->args[1]) |
| 2615 | nf_ct_expect_put((struct nf_conntrack_expect *)cb->args[1]); |
Patrick McHardy | cf6994c | 2007-07-07 22:32:34 -0700 | [diff] [blame] | 2616 | return 0; |
| 2617 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2618 | |
| 2619 | static int |
| 2620 | ctnetlink_exp_dump_table(struct sk_buff *skb, struct netlink_callback *cb) |
| 2621 | { |
Alexey Dobriyan | 9592a5c | 2010-01-13 16:04:18 +0100 | [diff] [blame] | 2622 | struct net *net = sock_net(skb->sk); |
Patrick McHardy | cf6994c | 2007-07-07 22:32:34 -0700 | [diff] [blame] | 2623 | struct nf_conntrack_expect *exp, *last; |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2624 | struct nfgenmsg *nfmsg = nlmsg_data(cb->nlh); |
Pablo Neira Ayuso | 87711cb | 2006-01-05 12:19:23 -0800 | [diff] [blame] | 2625 | u_int8_t l3proto = nfmsg->nfgen_family; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2626 | |
Patrick McHardy | 7d0742d | 2008-01-31 04:38:19 -0800 | [diff] [blame] | 2627 | rcu_read_lock(); |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2628 | last = (struct nf_conntrack_expect *)cb->args[1]; |
| 2629 | for (; cb->args[0] < nf_ct_expect_hsize; cb->args[0]++) { |
Patrick McHardy | cf6994c | 2007-07-07 22:32:34 -0700 | [diff] [blame] | 2630 | restart: |
Florian Westphal | 0a93aae | 2016-05-06 00:51:49 +0200 | [diff] [blame] | 2631 | hlist_for_each_entry(exp, &nf_ct_expect_hash[cb->args[0]], |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2632 | hnode) { |
| 2633 | if (l3proto && exp->tuple.src.l3num != l3proto) |
Patrick McHardy | cf6994c | 2007-07-07 22:32:34 -0700 | [diff] [blame] | 2634 | continue; |
Florian Westphal | 03d7dc5 | 2016-05-06 00:51:47 +0200 | [diff] [blame] | 2635 | |
| 2636 | if (!net_eq(nf_ct_net(exp->master), net)) |
| 2637 | continue; |
| 2638 | |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2639 | if (cb->args[1]) { |
| 2640 | if (exp != last) |
| 2641 | continue; |
| 2642 | cb->args[1] = 0; |
| 2643 | } |
Pablo Neira Ayuso | 8b0a231 | 2009-06-02 20:03:34 +0200 | [diff] [blame] | 2644 | if (ctnetlink_exp_fill_info(skb, |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2645 | NETLINK_CB(cb->skb).portid, |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2646 | cb->nlh->nlmsg_seq, |
| 2647 | IPCTNL_MSG_EXP_NEW, |
Pablo Neira Ayuso | 8b0a231 | 2009-06-02 20:03:34 +0200 | [diff] [blame] | 2648 | exp) < 0) { |
Patrick McHardy | 7d0742d | 2008-01-31 04:38:19 -0800 | [diff] [blame] | 2649 | if (!atomic_inc_not_zero(&exp->use)) |
| 2650 | continue; |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2651 | cb->args[1] = (unsigned long)exp; |
| 2652 | goto out; |
| 2653 | } |
Patrick McHardy | cf6994c | 2007-07-07 22:32:34 -0700 | [diff] [blame] | 2654 | } |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2655 | if (cb->args[1]) { |
| 2656 | cb->args[1] = 0; |
| 2657 | goto restart; |
Patrick McHardy | cf6994c | 2007-07-07 22:32:34 -0700 | [diff] [blame] | 2658 | } |
| 2659 | } |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 2660 | out: |
Patrick McHardy | 7d0742d | 2008-01-31 04:38:19 -0800 | [diff] [blame] | 2661 | rcu_read_unlock(); |
Patrick McHardy | cf6994c | 2007-07-07 22:32:34 -0700 | [diff] [blame] | 2662 | if (last) |
| 2663 | nf_ct_expect_put(last); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2664 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2665 | return skb->len; |
| 2666 | } |
| 2667 | |
Pablo Neira Ayuso | e844a92 | 2013-03-17 23:21:36 +0000 | [diff] [blame] | 2668 | static int |
| 2669 | ctnetlink_exp_ct_dump_table(struct sk_buff *skb, struct netlink_callback *cb) |
| 2670 | { |
| 2671 | struct nf_conntrack_expect *exp, *last; |
| 2672 | struct nfgenmsg *nfmsg = nlmsg_data(cb->nlh); |
| 2673 | struct nf_conn *ct = cb->data; |
| 2674 | struct nf_conn_help *help = nfct_help(ct); |
| 2675 | u_int8_t l3proto = nfmsg->nfgen_family; |
| 2676 | |
| 2677 | if (cb->args[0]) |
| 2678 | return 0; |
| 2679 | |
| 2680 | rcu_read_lock(); |
| 2681 | last = (struct nf_conntrack_expect *)cb->args[1]; |
| 2682 | restart: |
| 2683 | hlist_for_each_entry(exp, &help->expectations, lnode) { |
| 2684 | if (l3proto && exp->tuple.src.l3num != l3proto) |
| 2685 | continue; |
| 2686 | if (cb->args[1]) { |
| 2687 | if (exp != last) |
| 2688 | continue; |
| 2689 | cb->args[1] = 0; |
| 2690 | } |
| 2691 | if (ctnetlink_exp_fill_info(skb, NETLINK_CB(cb->skb).portid, |
| 2692 | cb->nlh->nlmsg_seq, |
| 2693 | IPCTNL_MSG_EXP_NEW, |
| 2694 | exp) < 0) { |
| 2695 | if (!atomic_inc_not_zero(&exp->use)) |
| 2696 | continue; |
| 2697 | cb->args[1] = (unsigned long)exp; |
| 2698 | goto out; |
| 2699 | } |
| 2700 | } |
| 2701 | if (cb->args[1]) { |
| 2702 | cb->args[1] = 0; |
| 2703 | goto restart; |
| 2704 | } |
| 2705 | cb->args[0] = 1; |
| 2706 | out: |
| 2707 | rcu_read_unlock(); |
| 2708 | if (last) |
| 2709 | nf_ct_expect_put(last); |
| 2710 | |
| 2711 | return skb->len; |
| 2712 | } |
| 2713 | |
Pablo Neira Ayuso | 7b8002a | 2015-12-15 18:41:56 +0100 | [diff] [blame] | 2714 | static int ctnetlink_dump_exp_ct(struct net *net, struct sock *ctnl, |
| 2715 | struct sk_buff *skb, |
Pablo Neira Ayuso | e844a92 | 2013-03-17 23:21:36 +0000 | [diff] [blame] | 2716 | const struct nlmsghdr *nlh, |
| 2717 | const struct nlattr * const cda[]) |
| 2718 | { |
| 2719 | int err; |
Pablo Neira Ayuso | e844a92 | 2013-03-17 23:21:36 +0000 | [diff] [blame] | 2720 | struct nfgenmsg *nfmsg = nlmsg_data(nlh); |
| 2721 | u_int8_t u3 = nfmsg->nfgen_family; |
| 2722 | struct nf_conntrack_tuple tuple; |
| 2723 | struct nf_conntrack_tuple_hash *h; |
| 2724 | struct nf_conn *ct; |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 2725 | struct nf_conntrack_zone zone; |
Pablo Neira Ayuso | e844a92 | 2013-03-17 23:21:36 +0000 | [diff] [blame] | 2726 | struct netlink_dump_control c = { |
| 2727 | .dump = ctnetlink_exp_ct_dump_table, |
| 2728 | .done = ctnetlink_exp_done, |
| 2729 | }; |
| 2730 | |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 2731 | err = ctnetlink_parse_tuple(cda, &tuple, CTA_EXPECT_MASTER, |
| 2732 | u3, NULL); |
Pablo Neira Ayuso | e844a92 | 2013-03-17 23:21:36 +0000 | [diff] [blame] | 2733 | if (err < 0) |
| 2734 | return err; |
| 2735 | |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 2736 | err = ctnetlink_parse_zone(cda[CTA_EXPECT_ZONE], &zone); |
| 2737 | if (err < 0) |
| 2738 | return err; |
Pablo Neira Ayuso | e844a92 | 2013-03-17 23:21:36 +0000 | [diff] [blame] | 2739 | |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 2740 | h = nf_conntrack_find_get(net, &zone, &tuple); |
Pablo Neira Ayuso | e844a92 | 2013-03-17 23:21:36 +0000 | [diff] [blame] | 2741 | if (!h) |
| 2742 | return -ENOENT; |
| 2743 | |
| 2744 | ct = nf_ct_tuplehash_to_ctrack(h); |
| 2745 | c.data = ct; |
| 2746 | |
| 2747 | err = netlink_dump_start(ctnl, skb, nlh, &c); |
| 2748 | nf_ct_put(ct); |
| 2749 | |
| 2750 | return err; |
| 2751 | } |
| 2752 | |
Pablo Neira Ayuso | 7b8002a | 2015-12-15 18:41:56 +0100 | [diff] [blame] | 2753 | static int ctnetlink_get_expect(struct net *net, struct sock *ctnl, |
| 2754 | struct sk_buff *skb, const struct nlmsghdr *nlh, |
| 2755 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2756 | { |
| 2757 | struct nf_conntrack_tuple tuple; |
| 2758 | struct nf_conntrack_expect *exp; |
| 2759 | struct sk_buff *skb2; |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2760 | struct nfgenmsg *nfmsg = nlmsg_data(nlh); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2761 | u_int8_t u3 = nfmsg->nfgen_family; |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 2762 | struct nf_conntrack_zone zone; |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 2763 | int err; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2764 | |
David S. Miller | b8f3ab4 | 2011-01-18 12:40:38 -0800 | [diff] [blame] | 2765 | if (nlh->nlmsg_flags & NLM_F_DUMP) { |
Pablo Neira Ayuso | e844a92 | 2013-03-17 23:21:36 +0000 | [diff] [blame] | 2766 | if (cda[CTA_EXPECT_MASTER]) |
Pablo Neira Ayuso | 7b8002a | 2015-12-15 18:41:56 +0100 | [diff] [blame] | 2767 | return ctnetlink_dump_exp_ct(net, ctnl, skb, nlh, cda); |
Pablo Neira Ayuso | e844a92 | 2013-03-17 23:21:36 +0000 | [diff] [blame] | 2768 | else { |
| 2769 | struct netlink_dump_control c = { |
| 2770 | .dump = ctnetlink_exp_dump_table, |
| 2771 | .done = ctnetlink_exp_done, |
| 2772 | }; |
| 2773 | return netlink_dump_start(ctnl, skb, nlh, &c); |
| 2774 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2775 | } |
| 2776 | |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 2777 | err = ctnetlink_parse_zone(cda[CTA_EXPECT_ZONE], &zone); |
| 2778 | if (err < 0) |
| 2779 | return err; |
| 2780 | |
Pablo Neira Ayuso | 35dba1d | 2011-12-14 12:45:22 +0100 | [diff] [blame] | 2781 | if (cda[CTA_EXPECT_TUPLE]) |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 2782 | err = ctnetlink_parse_tuple(cda, &tuple, CTA_EXPECT_TUPLE, |
| 2783 | u3, NULL); |
Pablo Neira Ayuso | 35dba1d | 2011-12-14 12:45:22 +0100 | [diff] [blame] | 2784 | else if (cda[CTA_EXPECT_MASTER]) |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 2785 | err = ctnetlink_parse_tuple(cda, &tuple, CTA_EXPECT_MASTER, |
| 2786 | u3, NULL); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2787 | else |
| 2788 | return -EINVAL; |
| 2789 | |
| 2790 | if (err < 0) |
| 2791 | return err; |
| 2792 | |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 2793 | exp = nf_ct_expect_find_get(net, &zone, &tuple); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2794 | if (!exp) |
| 2795 | return -ENOENT; |
| 2796 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2797 | if (cda[CTA_EXPECT_ID]) { |
Patrick McHardy | 77236b6 | 2007-12-17 22:29:45 -0800 | [diff] [blame] | 2798 | __be32 id = nla_get_be32(cda[CTA_EXPECT_ID]); |
Patrick McHardy | 3583240 | 2007-09-28 14:41:50 -0700 | [diff] [blame] | 2799 | if (ntohl(id) != (u32)(unsigned long)exp) { |
Patrick McHardy | 6823645 | 2007-07-07 22:30:49 -0700 | [diff] [blame] | 2800 | nf_ct_expect_put(exp); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2801 | return -ENOENT; |
| 2802 | } |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 2803 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2804 | |
| 2805 | err = -ENOMEM; |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2806 | skb2 = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
Pablo Neira Ayuso | 81378f7 | 2011-12-24 19:03:46 +0100 | [diff] [blame] | 2807 | if (skb2 == NULL) { |
| 2808 | nf_ct_expect_put(exp); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2809 | goto out; |
Pablo Neira Ayuso | 81378f7 | 2011-12-24 19:03:46 +0100 | [diff] [blame] | 2810 | } |
Thomas Graf | 4e9b826 | 2006-11-27 09:25:58 -0800 | [diff] [blame] | 2811 | |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 2812 | rcu_read_lock(); |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2813 | err = ctnetlink_exp_fill_info(skb2, NETLINK_CB(skb).portid, |
Pablo Neira Ayuso | 8b0a231 | 2009-06-02 20:03:34 +0200 | [diff] [blame] | 2814 | nlh->nlmsg_seq, IPCTNL_MSG_EXP_NEW, exp); |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 2815 | rcu_read_unlock(); |
Pablo Neira Ayuso | 81378f7 | 2011-12-24 19:03:46 +0100 | [diff] [blame] | 2816 | nf_ct_expect_put(exp); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2817 | if (err <= 0) |
| 2818 | goto free; |
| 2819 | |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2820 | err = netlink_unicast(ctnl, skb2, NETLINK_CB(skb).portid, MSG_DONTWAIT); |
Pablo Neira Ayuso | 81378f7 | 2011-12-24 19:03:46 +0100 | [diff] [blame] | 2821 | if (err < 0) |
| 2822 | goto out; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2823 | |
Pablo Neira Ayuso | 81378f7 | 2011-12-24 19:03:46 +0100 | [diff] [blame] | 2824 | return 0; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2825 | |
| 2826 | free: |
| 2827 | kfree_skb(skb2); |
| 2828 | out: |
Pablo Neira Ayuso | 81378f7 | 2011-12-24 19:03:46 +0100 | [diff] [blame] | 2829 | /* this avoids a loop in nfnetlink. */ |
| 2830 | return err == -EAGAIN ? -ENOBUFS : err; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2831 | } |
| 2832 | |
Pablo Neira Ayuso | 7b8002a | 2015-12-15 18:41:56 +0100 | [diff] [blame] | 2833 | static int ctnetlink_del_expect(struct net *net, struct sock *ctnl, |
| 2834 | struct sk_buff *skb, const struct nlmsghdr *nlh, |
| 2835 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2836 | { |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2837 | struct nf_conntrack_expect *exp; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2838 | struct nf_conntrack_tuple tuple; |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2839 | struct nfgenmsg *nfmsg = nlmsg_data(nlh); |
Sasha Levin | b67bfe0 | 2013-02-27 17:06:00 -0800 | [diff] [blame] | 2840 | struct hlist_node *next; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2841 | u_int8_t u3 = nfmsg->nfgen_family; |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 2842 | struct nf_conntrack_zone zone; |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2843 | unsigned int i; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2844 | int err; |
| 2845 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2846 | if (cda[CTA_EXPECT_TUPLE]) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2847 | /* delete a single expect by tuple */ |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 2848 | err = ctnetlink_parse_zone(cda[CTA_EXPECT_ZONE], &zone); |
| 2849 | if (err < 0) |
| 2850 | return err; |
| 2851 | |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 2852 | err = ctnetlink_parse_tuple(cda, &tuple, CTA_EXPECT_TUPLE, |
| 2853 | u3, NULL); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2854 | if (err < 0) |
| 2855 | return err; |
| 2856 | |
| 2857 | /* bump usage count to 2 */ |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 2858 | exp = nf_ct_expect_find_get(net, &zone, &tuple); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2859 | if (!exp) |
| 2860 | return -ENOENT; |
| 2861 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2862 | if (cda[CTA_EXPECT_ID]) { |
Patrick McHardy | 77236b6 | 2007-12-17 22:29:45 -0800 | [diff] [blame] | 2863 | __be32 id = nla_get_be32(cda[CTA_EXPECT_ID]); |
Patrick McHardy | 3583240 | 2007-09-28 14:41:50 -0700 | [diff] [blame] | 2864 | if (ntohl(id) != (u32)(unsigned long)exp) { |
Patrick McHardy | 6823645 | 2007-07-07 22:30:49 -0700 | [diff] [blame] | 2865 | nf_ct_expect_put(exp); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2866 | return -ENOENT; |
| 2867 | } |
| 2868 | } |
| 2869 | |
| 2870 | /* after list removal, usage count == 1 */ |
Jesper Dangaard Brouer | ca7433d | 2014-03-03 14:46:01 +0100 | [diff] [blame] | 2871 | spin_lock_bh(&nf_conntrack_expect_lock); |
Pablo Neira Ayuso | ebbf41d | 2010-10-19 10:19:06 +0200 | [diff] [blame] | 2872 | if (del_timer(&exp->timeout)) { |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2873 | nf_ct_unlink_expect_report(exp, NETLINK_CB(skb).portid, |
Pablo Neira Ayuso | ebbf41d | 2010-10-19 10:19:06 +0200 | [diff] [blame] | 2874 | nlmsg_report(nlh)); |
| 2875 | nf_ct_expect_put(exp); |
| 2876 | } |
Jesper Dangaard Brouer | ca7433d | 2014-03-03 14:46:01 +0100 | [diff] [blame] | 2877 | spin_unlock_bh(&nf_conntrack_expect_lock); |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 2878 | /* have to put what we 'get' above. |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2879 | * after this line usage count == 0 */ |
Patrick McHardy | 6823645 | 2007-07-07 22:30:49 -0700 | [diff] [blame] | 2880 | nf_ct_expect_put(exp); |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2881 | } else if (cda[CTA_EXPECT_HELP_NAME]) { |
| 2882 | char *name = nla_data(cda[CTA_EXPECT_HELP_NAME]); |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2883 | struct nf_conn_help *m_help; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2884 | |
| 2885 | /* delete all expectations for this helper */ |
Jesper Dangaard Brouer | ca7433d | 2014-03-03 14:46:01 +0100 | [diff] [blame] | 2886 | spin_lock_bh(&nf_conntrack_expect_lock); |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2887 | for (i = 0; i < nf_ct_expect_hsize; i++) { |
Sasha Levin | b67bfe0 | 2013-02-27 17:06:00 -0800 | [diff] [blame] | 2888 | hlist_for_each_entry_safe(exp, next, |
Florian Westphal | 0a93aae | 2016-05-06 00:51:49 +0200 | [diff] [blame] | 2889 | &nf_ct_expect_hash[i], |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2890 | hnode) { |
Florian Westphal | 03d7dc5 | 2016-05-06 00:51:47 +0200 | [diff] [blame] | 2891 | |
| 2892 | if (!net_eq(nf_ct_exp_net(exp), net)) |
| 2893 | continue; |
| 2894 | |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2895 | m_help = nfct_help(exp->master); |
Patrick McHardy | 794e687 | 2010-02-03 13:41:29 +0100 | [diff] [blame] | 2896 | if (!strcmp(m_help->helper->name, name) && |
| 2897 | del_timer(&exp->timeout)) { |
Pablo Neira Ayuso | ebbf41d | 2010-10-19 10:19:06 +0200 | [diff] [blame] | 2898 | nf_ct_unlink_expect_report(exp, |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2899 | NETLINK_CB(skb).portid, |
Pablo Neira Ayuso | ebbf41d | 2010-10-19 10:19:06 +0200 | [diff] [blame] | 2900 | nlmsg_report(nlh)); |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2901 | nf_ct_expect_put(exp); |
| 2902 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2903 | } |
| 2904 | } |
Jesper Dangaard Brouer | ca7433d | 2014-03-03 14:46:01 +0100 | [diff] [blame] | 2905 | spin_unlock_bh(&nf_conntrack_expect_lock); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2906 | } else { |
| 2907 | /* This basically means we have to flush everything*/ |
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 | if (del_timer(&exp->timeout)) { |
Pablo Neira Ayuso | ebbf41d | 2010-10-19 10:19:06 +0200 | [diff] [blame] | 2918 | nf_ct_unlink_expect_report(exp, |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2919 | NETLINK_CB(skb).portid, |
Pablo Neira Ayuso | ebbf41d | 2010-10-19 10:19:06 +0200 | [diff] [blame] | 2920 | nlmsg_report(nlh)); |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2921 | nf_ct_expect_put(exp); |
| 2922 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2923 | } |
| 2924 | } |
Jesper Dangaard Brouer | ca7433d | 2014-03-03 14:46:01 +0100 | [diff] [blame] | 2925 | spin_unlock_bh(&nf_conntrack_expect_lock); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2926 | } |
| 2927 | |
| 2928 | return 0; |
| 2929 | } |
| 2930 | static int |
Patrick McHardy | 3993832 | 2009-08-25 16:07:58 +0200 | [diff] [blame] | 2931 | ctnetlink_change_expect(struct nf_conntrack_expect *x, |
| 2932 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2933 | { |
Kelvie Wong | 9768e1a | 2012-05-02 14:39:24 +0000 | [diff] [blame] | 2934 | if (cda[CTA_EXPECT_TIMEOUT]) { |
| 2935 | if (!del_timer(&x->timeout)) |
| 2936 | return -ETIME; |
| 2937 | |
| 2938 | x->timeout.expires = jiffies + |
| 2939 | ntohl(nla_get_be32(cda[CTA_EXPECT_TIMEOUT])) * HZ; |
| 2940 | add_timer(&x->timeout); |
| 2941 | } |
| 2942 | return 0; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2943 | } |
| 2944 | |
Pablo Neira Ayuso | 076a0ca | 2012-02-05 03:41:52 +0100 | [diff] [blame] | 2945 | static const struct nla_policy exp_nat_nla_policy[CTA_EXPECT_NAT_MAX+1] = { |
| 2946 | [CTA_EXPECT_NAT_DIR] = { .type = NLA_U32 }, |
| 2947 | [CTA_EXPECT_NAT_TUPLE] = { .type = NLA_NESTED }, |
| 2948 | }; |
| 2949 | |
| 2950 | static int |
| 2951 | ctnetlink_parse_expect_nat(const struct nlattr *attr, |
| 2952 | struct nf_conntrack_expect *exp, |
| 2953 | u_int8_t u3) |
| 2954 | { |
| 2955 | #ifdef CONFIG_NF_NAT_NEEDED |
| 2956 | struct nlattr *tb[CTA_EXPECT_NAT_MAX+1]; |
| 2957 | struct nf_conntrack_tuple nat_tuple = {}; |
| 2958 | int err; |
| 2959 | |
Daniel Borkmann | 130ffbc | 2013-06-12 17:54:51 +0200 | [diff] [blame] | 2960 | err = nla_parse_nested(tb, CTA_EXPECT_NAT_MAX, attr, exp_nat_nla_policy); |
| 2961 | if (err < 0) |
| 2962 | return err; |
Pablo Neira Ayuso | 076a0ca | 2012-02-05 03:41:52 +0100 | [diff] [blame] | 2963 | |
| 2964 | if (!tb[CTA_EXPECT_NAT_DIR] || !tb[CTA_EXPECT_NAT_TUPLE]) |
| 2965 | return -EINVAL; |
| 2966 | |
| 2967 | err = ctnetlink_parse_tuple((const struct nlattr * const *)tb, |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 2968 | &nat_tuple, CTA_EXPECT_NAT_TUPLE, |
| 2969 | u3, NULL); |
Pablo Neira Ayuso | 076a0ca | 2012-02-05 03:41:52 +0100 | [diff] [blame] | 2970 | if (err < 0) |
| 2971 | return err; |
| 2972 | |
Patrick McHardy | c7232c9 | 2012-08-26 19:14:06 +0200 | [diff] [blame] | 2973 | exp->saved_addr = nat_tuple.src.u3; |
Pablo Neira Ayuso | 076a0ca | 2012-02-05 03:41:52 +0100 | [diff] [blame] | 2974 | exp->saved_proto = nat_tuple.src.u; |
| 2975 | exp->dir = ntohl(nla_get_be32(tb[CTA_EXPECT_NAT_DIR])); |
| 2976 | |
| 2977 | return 0; |
| 2978 | #else |
| 2979 | return -EOPNOTSUPP; |
| 2980 | #endif |
| 2981 | } |
| 2982 | |
Pablo Neira Ayuso | 0ef71ee | 2013-08-07 19:12:34 +0200 | [diff] [blame] | 2983 | static struct nf_conntrack_expect * |
| 2984 | ctnetlink_alloc_expect(const struct nlattr * const cda[], struct nf_conn *ct, |
| 2985 | struct nf_conntrack_helper *helper, |
| 2986 | struct nf_conntrack_tuple *tuple, |
| 2987 | struct nf_conntrack_tuple *mask) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2988 | { |
Pablo Neira Ayuso | b8c5e52 | 2012-02-05 03:21:12 +0100 | [diff] [blame] | 2989 | u_int32_t class = 0; |
Pablo Neira Ayuso | 0ef71ee | 2013-08-07 19:12:34 +0200 | [diff] [blame] | 2990 | struct nf_conntrack_expect *exp; |
| 2991 | struct nf_conn_help *help; |
| 2992 | int err; |
Pablo Neira Ayuso | 660fdb2 | 2012-02-05 02:34:16 +0100 | [diff] [blame] | 2993 | |
Pablo Neira Ayuso | b8c5e52 | 2012-02-05 03:21:12 +0100 | [diff] [blame] | 2994 | if (cda[CTA_EXPECT_CLASS] && helper) { |
| 2995 | class = ntohl(nla_get_be32(cda[CTA_EXPECT_CLASS])); |
Pablo Neira Ayuso | 0ef71ee | 2013-08-07 19:12:34 +0200 | [diff] [blame] | 2996 | if (class > helper->expect_class_max) |
| 2997 | return ERR_PTR(-EINVAL); |
Pablo Neira Ayuso | b8c5e52 | 2012-02-05 03:21:12 +0100 | [diff] [blame] | 2998 | } |
Patrick McHardy | 6823645 | 2007-07-07 22:30:49 -0700 | [diff] [blame] | 2999 | exp = nf_ct_expect_alloc(ct); |
Pablo Neira Ayuso | 0ef71ee | 2013-08-07 19:12:34 +0200 | [diff] [blame] | 3000 | if (!exp) |
| 3001 | return ERR_PTR(-ENOMEM); |
| 3002 | |
Pablo Neira Ayuso | bc01befd | 2010-09-28 21:06:34 +0200 | [diff] [blame] | 3003 | help = nfct_help(ct); |
| 3004 | if (!help) { |
| 3005 | if (!cda[CTA_EXPECT_TIMEOUT]) { |
| 3006 | err = -EINVAL; |
Jesper Juhl | 1310b955 | 2012-12-26 11:49:40 +0000 | [diff] [blame] | 3007 | goto err_out; |
Pablo Neira Ayuso | bc01befd | 2010-09-28 21:06:34 +0200 | [diff] [blame] | 3008 | } |
| 3009 | exp->timeout.expires = |
| 3010 | jiffies + ntohl(nla_get_be32(cda[CTA_EXPECT_TIMEOUT])) * HZ; |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 3011 | |
Pablo Neira Ayuso | bc01befd | 2010-09-28 21:06:34 +0200 | [diff] [blame] | 3012 | exp->flags = NF_CT_EXPECT_USERSPACE; |
| 3013 | if (cda[CTA_EXPECT_FLAGS]) { |
| 3014 | exp->flags |= |
| 3015 | ntohl(nla_get_be32(cda[CTA_EXPECT_FLAGS])); |
| 3016 | } |
| 3017 | } else { |
| 3018 | if (cda[CTA_EXPECT_FLAGS]) { |
| 3019 | exp->flags = ntohl(nla_get_be32(cda[CTA_EXPECT_FLAGS])); |
| 3020 | exp->flags &= ~NF_CT_EXPECT_USERSPACE; |
| 3021 | } else |
| 3022 | exp->flags = 0; |
| 3023 | } |
Pablo Neira Ayuso | 544d5c7 | 2012-02-05 03:44:51 +0100 | [diff] [blame] | 3024 | if (cda[CTA_EXPECT_FN]) { |
| 3025 | const char *name = nla_data(cda[CTA_EXPECT_FN]); |
| 3026 | struct nf_ct_helper_expectfn *expfn; |
| 3027 | |
| 3028 | expfn = nf_ct_helper_expectfn_find_by_name(name); |
| 3029 | if (expfn == NULL) { |
| 3030 | err = -EINVAL; |
| 3031 | goto err_out; |
| 3032 | } |
| 3033 | exp->expectfn = expfn->expectfn; |
| 3034 | } else |
| 3035 | exp->expectfn = NULL; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3036 | |
Pablo Neira Ayuso | b8c5e52 | 2012-02-05 03:21:12 +0100 | [diff] [blame] | 3037 | exp->class = class; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3038 | exp->master = ct; |
Pablo Neira Ayuso | 660fdb2 | 2012-02-05 02:34:16 +0100 | [diff] [blame] | 3039 | exp->helper = helper; |
Pablo Neira Ayuso | 0ef71ee | 2013-08-07 19:12:34 +0200 | [diff] [blame] | 3040 | exp->tuple = *tuple; |
| 3041 | exp->mask.src.u3 = mask->src.u3; |
| 3042 | exp->mask.src.u.all = mask->src.u.all; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3043 | |
Pablo Neira Ayuso | 076a0ca | 2012-02-05 03:41:52 +0100 | [diff] [blame] | 3044 | if (cda[CTA_EXPECT_NAT]) { |
| 3045 | err = ctnetlink_parse_expect_nat(cda[CTA_EXPECT_NAT], |
Pablo Neira Ayuso | 0ef71ee | 2013-08-07 19:12:34 +0200 | [diff] [blame] | 3046 | exp, nf_ct_l3num(ct)); |
Pablo Neira Ayuso | 076a0ca | 2012-02-05 03:41:52 +0100 | [diff] [blame] | 3047 | if (err < 0) |
| 3048 | goto err_out; |
| 3049 | } |
Pablo Neira Ayuso | 0ef71ee | 2013-08-07 19:12:34 +0200 | [diff] [blame] | 3050 | return exp; |
Pablo Neira Ayuso | 076a0ca | 2012-02-05 03:41:52 +0100 | [diff] [blame] | 3051 | err_out: |
Patrick McHardy | 6823645 | 2007-07-07 22:30:49 -0700 | [diff] [blame] | 3052 | nf_ct_expect_put(exp); |
Pablo Neira Ayuso | 0ef71ee | 2013-08-07 19:12:34 +0200 | [diff] [blame] | 3053 | return ERR_PTR(err); |
| 3054 | } |
| 3055 | |
| 3056 | static int |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 3057 | ctnetlink_create_expect(struct net *net, |
| 3058 | const struct nf_conntrack_zone *zone, |
Pablo Neira Ayuso | 0ef71ee | 2013-08-07 19:12:34 +0200 | [diff] [blame] | 3059 | const struct nlattr * const cda[], |
| 3060 | u_int8_t u3, u32 portid, int report) |
| 3061 | { |
| 3062 | struct nf_conntrack_tuple tuple, mask, master_tuple; |
| 3063 | struct nf_conntrack_tuple_hash *h = NULL; |
| 3064 | struct nf_conntrack_helper *helper = NULL; |
| 3065 | struct nf_conntrack_expect *exp; |
| 3066 | struct nf_conn *ct; |
| 3067 | int err; |
| 3068 | |
| 3069 | /* caller guarantees that those three CTA_EXPECT_* exist */ |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 3070 | err = ctnetlink_parse_tuple(cda, &tuple, CTA_EXPECT_TUPLE, |
| 3071 | u3, NULL); |
Pablo Neira Ayuso | 0ef71ee | 2013-08-07 19:12:34 +0200 | [diff] [blame] | 3072 | if (err < 0) |
| 3073 | return err; |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 3074 | err = ctnetlink_parse_tuple(cda, &mask, CTA_EXPECT_MASK, |
| 3075 | u3, NULL); |
Pablo Neira Ayuso | 0ef71ee | 2013-08-07 19:12:34 +0200 | [diff] [blame] | 3076 | if (err < 0) |
| 3077 | return err; |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 3078 | err = ctnetlink_parse_tuple(cda, &master_tuple, CTA_EXPECT_MASTER, |
| 3079 | u3, NULL); |
Pablo Neira Ayuso | 0ef71ee | 2013-08-07 19:12:34 +0200 | [diff] [blame] | 3080 | if (err < 0) |
| 3081 | return err; |
| 3082 | |
| 3083 | /* Look for master conntrack of this expectation */ |
| 3084 | h = nf_conntrack_find_get(net, zone, &master_tuple); |
| 3085 | if (!h) |
| 3086 | return -ENOENT; |
| 3087 | ct = nf_ct_tuplehash_to_ctrack(h); |
| 3088 | |
| 3089 | if (cda[CTA_EXPECT_HELP_NAME]) { |
| 3090 | const char *helpname = nla_data(cda[CTA_EXPECT_HELP_NAME]); |
| 3091 | |
| 3092 | helper = __nf_conntrack_helper_find(helpname, u3, |
| 3093 | nf_ct_protonum(ct)); |
| 3094 | if (helper == NULL) { |
| 3095 | #ifdef CONFIG_MODULES |
| 3096 | if (request_module("nfct-helper-%s", helpname) < 0) { |
| 3097 | err = -EOPNOTSUPP; |
| 3098 | goto err_ct; |
| 3099 | } |
| 3100 | helper = __nf_conntrack_helper_find(helpname, u3, |
| 3101 | nf_ct_protonum(ct)); |
| 3102 | if (helper) { |
| 3103 | err = -EAGAIN; |
| 3104 | goto err_ct; |
| 3105 | } |
| 3106 | #endif |
| 3107 | err = -EOPNOTSUPP; |
| 3108 | goto err_ct; |
| 3109 | } |
| 3110 | } |
| 3111 | |
| 3112 | exp = ctnetlink_alloc_expect(cda, ct, helper, &tuple, &mask); |
| 3113 | if (IS_ERR(exp)) { |
| 3114 | err = PTR_ERR(exp); |
| 3115 | goto err_ct; |
| 3116 | } |
| 3117 | |
| 3118 | err = nf_ct_expect_related_report(exp, portid, report); |
Pablo Neira Ayuso | 0ef71ee | 2013-08-07 19:12:34 +0200 | [diff] [blame] | 3119 | nf_ct_expect_put(exp); |
| 3120 | err_ct: |
| 3121 | nf_ct_put(ct); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3122 | return err; |
| 3123 | } |
| 3124 | |
Pablo Neira Ayuso | 7b8002a | 2015-12-15 18:41:56 +0100 | [diff] [blame] | 3125 | static int ctnetlink_new_expect(struct net *net, struct sock *ctnl, |
| 3126 | struct sk_buff *skb, const struct nlmsghdr *nlh, |
| 3127 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3128 | { |
| 3129 | struct nf_conntrack_tuple tuple; |
| 3130 | struct nf_conntrack_expect *exp; |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 3131 | struct nfgenmsg *nfmsg = nlmsg_data(nlh); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3132 | u_int8_t u3 = nfmsg->nfgen_family; |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 3133 | struct nf_conntrack_zone zone; |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 3134 | int err; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3135 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 3136 | if (!cda[CTA_EXPECT_TUPLE] |
| 3137 | || !cda[CTA_EXPECT_MASK] |
| 3138 | || !cda[CTA_EXPECT_MASTER]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3139 | return -EINVAL; |
| 3140 | |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 3141 | err = ctnetlink_parse_zone(cda[CTA_EXPECT_ZONE], &zone); |
| 3142 | if (err < 0) |
| 3143 | return err; |
| 3144 | |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 3145 | err = ctnetlink_parse_tuple(cda, &tuple, CTA_EXPECT_TUPLE, |
| 3146 | u3, NULL); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3147 | if (err < 0) |
| 3148 | return err; |
| 3149 | |
Jesper Dangaard Brouer | ca7433d | 2014-03-03 14:46:01 +0100 | [diff] [blame] | 3150 | spin_lock_bh(&nf_conntrack_expect_lock); |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 3151 | exp = __nf_ct_expect_find(net, &zone, &tuple); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3152 | if (!exp) { |
Jesper Dangaard Brouer | ca7433d | 2014-03-03 14:46:01 +0100 | [diff] [blame] | 3153 | spin_unlock_bh(&nf_conntrack_expect_lock); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3154 | err = -ENOENT; |
Pablo Neira Ayuso | 19abb7b | 2008-11-18 11:56:20 +0100 | [diff] [blame] | 3155 | if (nlh->nlmsg_flags & NLM_F_CREATE) { |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 3156 | err = ctnetlink_create_expect(net, &zone, cda, u3, |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 3157 | NETLINK_CB(skb).portid, |
Pablo Neira Ayuso | 19abb7b | 2008-11-18 11:56:20 +0100 | [diff] [blame] | 3158 | nlmsg_report(nlh)); |
| 3159 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3160 | return err; |
| 3161 | } |
| 3162 | |
| 3163 | err = -EEXIST; |
| 3164 | if (!(nlh->nlmsg_flags & NLM_F_EXCL)) |
| 3165 | err = ctnetlink_change_expect(exp, cda); |
Jesper Dangaard Brouer | ca7433d | 2014-03-03 14:46:01 +0100 | [diff] [blame] | 3166 | spin_unlock_bh(&nf_conntrack_expect_lock); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3167 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3168 | return err; |
| 3169 | } |
| 3170 | |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 3171 | static int |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 3172 | 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] | 3173 | const struct ip_conntrack_stat *st) |
| 3174 | { |
| 3175 | struct nlmsghdr *nlh; |
| 3176 | struct nfgenmsg *nfmsg; |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 3177 | unsigned int flags = portid ? NLM_F_MULTI : 0, event; |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 3178 | |
| 3179 | event = (NFNL_SUBSYS_CTNETLINK << 8 | IPCTNL_MSG_EXP_GET_STATS_CPU); |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 3180 | nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags); |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 3181 | if (nlh == NULL) |
| 3182 | goto nlmsg_failure; |
| 3183 | |
| 3184 | nfmsg = nlmsg_data(nlh); |
| 3185 | nfmsg->nfgen_family = AF_UNSPEC; |
| 3186 | nfmsg->version = NFNETLINK_V0; |
| 3187 | nfmsg->res_id = htons(cpu); |
| 3188 | |
| 3189 | if (nla_put_be32(skb, CTA_STATS_EXP_NEW, htonl(st->expect_new)) || |
| 3190 | nla_put_be32(skb, CTA_STATS_EXP_CREATE, htonl(st->expect_create)) || |
| 3191 | nla_put_be32(skb, CTA_STATS_EXP_DELETE, htonl(st->expect_delete))) |
| 3192 | goto nla_put_failure; |
| 3193 | |
| 3194 | nlmsg_end(skb, nlh); |
| 3195 | return skb->len; |
| 3196 | |
| 3197 | nla_put_failure: |
| 3198 | nlmsg_failure: |
| 3199 | nlmsg_cancel(skb, nlh); |
| 3200 | return -1; |
| 3201 | } |
| 3202 | |
| 3203 | static int |
| 3204 | ctnetlink_exp_stat_cpu_dump(struct sk_buff *skb, struct netlink_callback *cb) |
| 3205 | { |
| 3206 | int cpu; |
| 3207 | struct net *net = sock_net(skb->sk); |
| 3208 | |
| 3209 | if (cb->args[0] == nr_cpu_ids) |
| 3210 | return 0; |
| 3211 | |
| 3212 | for (cpu = cb->args[0]; cpu < nr_cpu_ids; cpu++) { |
| 3213 | const struct ip_conntrack_stat *st; |
| 3214 | |
| 3215 | if (!cpu_possible(cpu)) |
| 3216 | continue; |
| 3217 | |
| 3218 | st = per_cpu_ptr(net->ct.stat, cpu); |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 3219 | 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] | 3220 | cb->nlh->nlmsg_seq, |
| 3221 | cpu, st) < 0) |
| 3222 | break; |
| 3223 | } |
| 3224 | cb->args[0] = cpu; |
| 3225 | |
| 3226 | return skb->len; |
| 3227 | } |
| 3228 | |
Pablo Neira Ayuso | 7b8002a | 2015-12-15 18:41:56 +0100 | [diff] [blame] | 3229 | static int ctnetlink_stat_exp_cpu(struct net *net, struct sock *ctnl, |
| 3230 | struct sk_buff *skb, |
| 3231 | const struct nlmsghdr *nlh, |
| 3232 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 3233 | { |
| 3234 | if (nlh->nlmsg_flags & NLM_F_DUMP) { |
| 3235 | struct netlink_dump_control c = { |
| 3236 | .dump = ctnetlink_exp_stat_cpu_dump, |
| 3237 | }; |
| 3238 | return netlink_dump_start(ctnl, skb, nlh, &c); |
| 3239 | } |
| 3240 | |
| 3241 | return 0; |
| 3242 | } |
| 3243 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3244 | #ifdef CONFIG_NF_CONNTRACK_EVENTS |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 3245 | static struct nf_ct_event_notifier ctnl_notifier = { |
| 3246 | .fcn = ctnetlink_conntrack_event, |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3247 | }; |
| 3248 | |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 3249 | static struct nf_exp_event_notifier ctnl_notifier_exp = { |
| 3250 | .fcn = ctnetlink_expect_event, |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3251 | }; |
| 3252 | #endif |
| 3253 | |
Patrick McHardy | 7c8d4cb | 2007-09-28 14:15:45 -0700 | [diff] [blame] | 3254 | static const struct nfnl_callback ctnl_cb[IPCTNL_MSG_MAX] = { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3255 | [IPCTNL_MSG_CT_NEW] = { .call = ctnetlink_new_conntrack, |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 3256 | .attr_count = CTA_MAX, |
| 3257 | .policy = ct_nla_policy }, |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3258 | [IPCTNL_MSG_CT_GET] = { .call = ctnetlink_get_conntrack, |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 3259 | .attr_count = CTA_MAX, |
| 3260 | .policy = ct_nla_policy }, |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3261 | [IPCTNL_MSG_CT_DELETE] = { .call = ctnetlink_del_conntrack, |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 3262 | .attr_count = CTA_MAX, |
| 3263 | .policy = ct_nla_policy }, |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3264 | [IPCTNL_MSG_CT_GET_CTRZERO] = { .call = ctnetlink_get_conntrack, |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 3265 | .attr_count = CTA_MAX, |
| 3266 | .policy = ct_nla_policy }, |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 3267 | [IPCTNL_MSG_CT_GET_STATS_CPU] = { .call = ctnetlink_stat_ct_cpu }, |
| 3268 | [IPCTNL_MSG_CT_GET_STATS] = { .call = ctnetlink_stat_ct }, |
Pablo Neira Ayuso | d871bef | 2012-11-27 14:49:42 +0100 | [diff] [blame] | 3269 | [IPCTNL_MSG_CT_GET_DYING] = { .call = ctnetlink_get_ct_dying }, |
| 3270 | [IPCTNL_MSG_CT_GET_UNCONFIRMED] = { .call = ctnetlink_get_ct_unconfirmed }, |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3271 | }; |
| 3272 | |
Patrick McHardy | 7c8d4cb | 2007-09-28 14:15:45 -0700 | [diff] [blame] | 3273 | 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] | 3274 | [IPCTNL_MSG_EXP_GET] = { .call = ctnetlink_get_expect, |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 3275 | .attr_count = CTA_EXPECT_MAX, |
| 3276 | .policy = exp_nla_policy }, |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3277 | [IPCTNL_MSG_EXP_NEW] = { .call = ctnetlink_new_expect, |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 3278 | .attr_count = CTA_EXPECT_MAX, |
| 3279 | .policy = exp_nla_policy }, |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3280 | [IPCTNL_MSG_EXP_DELETE] = { .call = ctnetlink_del_expect, |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 3281 | .attr_count = CTA_EXPECT_MAX, |
| 3282 | .policy = exp_nla_policy }, |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 3283 | [IPCTNL_MSG_EXP_GET_STATS_CPU] = { .call = ctnetlink_stat_exp_cpu }, |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3284 | }; |
| 3285 | |
Patrick McHardy | 7c8d4cb | 2007-09-28 14:15:45 -0700 | [diff] [blame] | 3286 | static const struct nfnetlink_subsystem ctnl_subsys = { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3287 | .name = "conntrack", |
| 3288 | .subsys_id = NFNL_SUBSYS_CTNETLINK, |
| 3289 | .cb_count = IPCTNL_MSG_MAX, |
| 3290 | .cb = ctnl_cb, |
| 3291 | }; |
| 3292 | |
Patrick McHardy | 7c8d4cb | 2007-09-28 14:15:45 -0700 | [diff] [blame] | 3293 | static const struct nfnetlink_subsystem ctnl_exp_subsys = { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3294 | .name = "conntrack_expect", |
| 3295 | .subsys_id = NFNL_SUBSYS_CTNETLINK_EXP, |
| 3296 | .cb_count = IPCTNL_MSG_EXP_MAX, |
| 3297 | .cb = ctnl_exp_cb, |
| 3298 | }; |
| 3299 | |
Patrick McHardy | d2483dd | 2006-12-02 22:06:05 -0800 | [diff] [blame] | 3300 | MODULE_ALIAS("ip_conntrack_netlink"); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3301 | MODULE_ALIAS_NFNL_SUBSYS(NFNL_SUBSYS_CTNETLINK); |
Pablo Neira Ayuso | 34f9a2e | 2006-02-04 02:11:41 -0800 | [diff] [blame] | 3302 | MODULE_ALIAS_NFNL_SUBSYS(NFNL_SUBSYS_CTNETLINK_EXP); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3303 | |
Pablo Neira Ayuso | 70e9942 | 2011-11-22 00:16:51 +0100 | [diff] [blame] | 3304 | static int __net_init ctnetlink_net_init(struct net *net) |
| 3305 | { |
| 3306 | #ifdef CONFIG_NF_CONNTRACK_EVENTS |
| 3307 | int ret; |
| 3308 | |
| 3309 | ret = nf_conntrack_register_notifier(net, &ctnl_notifier); |
| 3310 | if (ret < 0) { |
| 3311 | pr_err("ctnetlink_init: cannot register notifier.\n"); |
| 3312 | goto err_out; |
| 3313 | } |
| 3314 | |
| 3315 | ret = nf_ct_expect_register_notifier(net, &ctnl_notifier_exp); |
| 3316 | if (ret < 0) { |
| 3317 | pr_err("ctnetlink_init: cannot expect register notifier.\n"); |
| 3318 | goto err_unreg_notifier; |
| 3319 | } |
| 3320 | #endif |
| 3321 | return 0; |
| 3322 | |
| 3323 | #ifdef CONFIG_NF_CONNTRACK_EVENTS |
| 3324 | err_unreg_notifier: |
| 3325 | nf_conntrack_unregister_notifier(net, &ctnl_notifier); |
| 3326 | err_out: |
| 3327 | return ret; |
| 3328 | #endif |
| 3329 | } |
| 3330 | |
| 3331 | static void ctnetlink_net_exit(struct net *net) |
| 3332 | { |
| 3333 | #ifdef CONFIG_NF_CONNTRACK_EVENTS |
| 3334 | nf_ct_expect_unregister_notifier(net, &ctnl_notifier_exp); |
| 3335 | nf_conntrack_unregister_notifier(net, &ctnl_notifier); |
| 3336 | #endif |
| 3337 | } |
| 3338 | |
| 3339 | static void __net_exit ctnetlink_net_exit_batch(struct list_head *net_exit_list) |
| 3340 | { |
| 3341 | struct net *net; |
| 3342 | |
| 3343 | list_for_each_entry(net, net_exit_list, exit_list) |
| 3344 | ctnetlink_net_exit(net); |
| 3345 | } |
| 3346 | |
| 3347 | static struct pernet_operations ctnetlink_net_ops = { |
| 3348 | .init = ctnetlink_net_init, |
| 3349 | .exit_batch = ctnetlink_net_exit_batch, |
| 3350 | }; |
| 3351 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3352 | static int __init ctnetlink_init(void) |
| 3353 | { |
| 3354 | int ret; |
| 3355 | |
Stephen Hemminger | 654d0fb | 2010-05-13 15:02:08 +0200 | [diff] [blame] | 3356 | pr_info("ctnetlink v%s: registering with nfnetlink.\n", version); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3357 | ret = nfnetlink_subsys_register(&ctnl_subsys); |
| 3358 | if (ret < 0) { |
Stephen Hemminger | 654d0fb | 2010-05-13 15:02:08 +0200 | [diff] [blame] | 3359 | pr_err("ctnetlink_init: cannot register with nfnetlink.\n"); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3360 | goto err_out; |
| 3361 | } |
| 3362 | |
| 3363 | ret = nfnetlink_subsys_register(&ctnl_exp_subsys); |
| 3364 | if (ret < 0) { |
Stephen Hemminger | 654d0fb | 2010-05-13 15:02:08 +0200 | [diff] [blame] | 3365 | pr_err("ctnetlink_init: cannot register exp with nfnetlink.\n"); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3366 | goto err_unreg_subsys; |
| 3367 | } |
| 3368 | |
Julia Lawall | ef6acf6 | 2012-08-29 06:49:16 +0000 | [diff] [blame] | 3369 | ret = register_pernet_subsys(&ctnetlink_net_ops); |
| 3370 | if (ret < 0) { |
Pablo Neira Ayuso | 70e9942 | 2011-11-22 00:16:51 +0100 | [diff] [blame] | 3371 | pr_err("ctnetlink_init: cannot register pernet operations\n"); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3372 | goto err_unreg_exp_subsys; |
| 3373 | } |
Ken-ichirou MATSUZAWA | 83f3e94 | 2015-10-05 11:48:47 +0900 | [diff] [blame] | 3374 | #ifdef CONFIG_NETFILTER_NETLINK_GLUE_CT |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 3375 | /* setup interaction between nf_queue and nf_conntrack_netlink. */ |
Ken-ichirou MATSUZAWA | a4b4766 | 2015-10-05 11:47:13 +0900 | [diff] [blame] | 3376 | RCU_INIT_POINTER(nfnl_ct_hook, &ctnetlink_glue_hook); |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 3377 | #endif |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3378 | return 0; |
| 3379 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3380 | err_unreg_exp_subsys: |
| 3381 | nfnetlink_subsys_unregister(&ctnl_exp_subsys); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3382 | err_unreg_subsys: |
| 3383 | nfnetlink_subsys_unregister(&ctnl_subsys); |
| 3384 | err_out: |
| 3385 | return ret; |
| 3386 | } |
| 3387 | |
| 3388 | static void __exit ctnetlink_exit(void) |
| 3389 | { |
Stephen Hemminger | 654d0fb | 2010-05-13 15:02:08 +0200 | [diff] [blame] | 3390 | pr_info("ctnetlink: unregistering from nfnetlink.\n"); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3391 | |
Pablo Neira Ayuso | 70e9942 | 2011-11-22 00:16:51 +0100 | [diff] [blame] | 3392 | unregister_pernet_subsys(&ctnetlink_net_ops); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3393 | nfnetlink_subsys_unregister(&ctnl_exp_subsys); |
| 3394 | nfnetlink_subsys_unregister(&ctnl_subsys); |
Ken-ichirou MATSUZAWA | 83f3e94 | 2015-10-05 11:48:47 +0900 | [diff] [blame] | 3395 | #ifdef CONFIG_NETFILTER_NETLINK_GLUE_CT |
Ken-ichirou MATSUZAWA | a4b4766 | 2015-10-05 11:47:13 +0900 | [diff] [blame] | 3396 | RCU_INIT_POINTER(nfnl_ct_hook, NULL); |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 3397 | #endif |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3398 | } |
| 3399 | |
| 3400 | module_init(ctnetlink_init); |
| 3401 | module_exit(ctnetlink_exit); |