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 | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 61 | static inline int |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 62 | ctnetlink_dump_tuples_proto(struct sk_buff *skb, |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 63 | const struct nf_conntrack_tuple *tuple, |
Martin Josefsson | 605dcad | 2006-11-29 02:35:06 +0100 | [diff] [blame] | 64 | struct nf_conntrack_l4proto *l4proto) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 65 | { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 66 | int ret = 0; |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 67 | struct nlattr *nest_parms; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 68 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 69 | nest_parms = nla_nest_start(skb, CTA_TUPLE_PROTO | NLA_F_NESTED); |
| 70 | if (!nest_parms) |
| 71 | goto nla_put_failure; |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 72 | if (nla_put_u8(skb, CTA_PROTO_NUM, tuple->dst.protonum)) |
| 73 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 74 | |
Patrick McHardy | fdf7083 | 2007-09-28 14:37:41 -0700 | [diff] [blame] | 75 | if (likely(l4proto->tuple_to_nlattr)) |
| 76 | ret = l4proto->tuple_to_nlattr(skb, tuple); |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 77 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 78 | nla_nest_end(skb, nest_parms); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 79 | |
| 80 | return ret; |
| 81 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 82 | nla_put_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 83 | return -1; |
| 84 | } |
| 85 | |
| 86 | static inline int |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 87 | ctnetlink_dump_tuples_ip(struct sk_buff *skb, |
| 88 | const struct nf_conntrack_tuple *tuple, |
| 89 | struct nf_conntrack_l3proto *l3proto) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 90 | { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 91 | int ret = 0; |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 92 | struct nlattr *nest_parms; |
| 93 | |
| 94 | nest_parms = nla_nest_start(skb, CTA_TUPLE_IP | NLA_F_NESTED); |
| 95 | if (!nest_parms) |
| 96 | goto nla_put_failure; |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 97 | |
Patrick McHardy | fdf7083 | 2007-09-28 14:37:41 -0700 | [diff] [blame] | 98 | if (likely(l3proto->tuple_to_nlattr)) |
| 99 | ret = l3proto->tuple_to_nlattr(skb, tuple); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 100 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 101 | nla_nest_end(skb, nest_parms); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 102 | |
| 103 | return ret; |
| 104 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 105 | nla_put_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 106 | return -1; |
| 107 | } |
| 108 | |
Ilpo Järvinen | bb5cf80 | 2008-01-05 23:11:31 -0800 | [diff] [blame] | 109 | static int |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 110 | ctnetlink_dump_tuples(struct sk_buff *skb, |
| 111 | const struct nf_conntrack_tuple *tuple) |
| 112 | { |
| 113 | int ret; |
| 114 | struct nf_conntrack_l3proto *l3proto; |
Martin Josefsson | 605dcad | 2006-11-29 02:35:06 +0100 | [diff] [blame] | 115 | struct nf_conntrack_l4proto *l4proto; |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 116 | |
Hans Schillstrom | 3b988ec | 2012-03-05 02:24:29 +0000 | [diff] [blame] | 117 | rcu_read_lock(); |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 118 | l3proto = __nf_ct_l3proto_find(tuple->src.l3num); |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 119 | ret = ctnetlink_dump_tuples_ip(skb, tuple, l3proto); |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 120 | |
Hans Schillstrom | 3b988ec | 2012-03-05 02:24:29 +0000 | [diff] [blame] | 121 | if (ret >= 0) { |
| 122 | l4proto = __nf_ct_l4proto_find(tuple->src.l3num, |
| 123 | tuple->dst.protonum); |
| 124 | ret = ctnetlink_dump_tuples_proto(skb, tuple, l4proto); |
| 125 | } |
| 126 | rcu_read_unlock(); |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 127 | return ret; |
| 128 | } |
| 129 | |
| 130 | static inline int |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 131 | ctnetlink_dump_zone_id(struct sk_buff *skb, int attrtype, |
| 132 | const struct nf_conntrack_zone *zone, int dir) |
| 133 | { |
| 134 | if (zone->id == NF_CT_DEFAULT_ZONE_ID || zone->dir != dir) |
| 135 | return 0; |
| 136 | if (nla_put_be16(skb, attrtype, htons(zone->id))) |
| 137 | goto nla_put_failure; |
| 138 | return 0; |
| 139 | |
| 140 | nla_put_failure: |
| 141 | return -1; |
| 142 | } |
| 143 | |
| 144 | static inline int |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 145 | ctnetlink_dump_status(struct sk_buff *skb, const struct nf_conn *ct) |
| 146 | { |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 147 | if (nla_put_be32(skb, CTA_STATUS, htonl(ct->status))) |
| 148 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 149 | return 0; |
| 150 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 151 | nla_put_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 152 | return -1; |
| 153 | } |
| 154 | |
| 155 | static inline int |
| 156 | ctnetlink_dump_timeout(struct sk_buff *skb, const struct nf_conn *ct) |
| 157 | { |
Xi Wang | c121638 | 2011-12-30 10:40:17 -0500 | [diff] [blame] | 158 | long timeout = ((long)ct->timeout.expires - (long)jiffies) / HZ; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 159 | |
Patrick McHardy | 77236b6 | 2007-12-17 22:29:45 -0800 | [diff] [blame] | 160 | if (timeout < 0) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 161 | timeout = 0; |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 162 | |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 163 | if (nla_put_be32(skb, CTA_TIMEOUT, htonl(timeout))) |
| 164 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 165 | return 0; |
| 166 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 167 | nla_put_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 168 | return -1; |
| 169 | } |
| 170 | |
| 171 | static inline int |
Patrick McHardy | 440f0d5 | 2009-06-10 14:32:47 +0200 | [diff] [blame] | 172 | ctnetlink_dump_protoinfo(struct sk_buff *skb, struct nf_conn *ct) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 173 | { |
Patrick McHardy | 5e8fbe2 | 2008-04-14 11:15:52 +0200 | [diff] [blame] | 174 | struct nf_conntrack_l4proto *l4proto; |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 175 | struct nlattr *nest_proto; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 176 | int ret; |
| 177 | |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 178 | l4proto = __nf_ct_l4proto_find(nf_ct_l3num(ct), nf_ct_protonum(ct)); |
| 179 | if (!l4proto->to_nlattr) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 180 | return 0; |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 181 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 182 | nest_proto = nla_nest_start(skb, CTA_PROTOINFO | NLA_F_NESTED); |
| 183 | if (!nest_proto) |
| 184 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 185 | |
Patrick McHardy | fdf7083 | 2007-09-28 14:37:41 -0700 | [diff] [blame] | 186 | ret = l4proto->to_nlattr(skb, nest_proto, ct); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 187 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 188 | nla_nest_end(skb, nest_proto); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 189 | |
| 190 | return ret; |
| 191 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 192 | nla_put_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 193 | return -1; |
| 194 | } |
| 195 | |
| 196 | static inline int |
| 197 | ctnetlink_dump_helpinfo(struct sk_buff *skb, const struct nf_conn *ct) |
| 198 | { |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 199 | struct nlattr *nest_helper; |
Harald Welte | dc808fe | 2006-03-20 17:56:32 -0800 | [diff] [blame] | 200 | const struct nf_conn_help *help = nfct_help(ct); |
Patrick McHarrdy | 3c158f7 | 2007-06-05 12:55:27 -0700 | [diff] [blame] | 201 | struct nf_conntrack_helper *helper; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 202 | |
Patrick McHarrdy | 3c158f7 | 2007-06-05 12:55:27 -0700 | [diff] [blame] | 203 | if (!help) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 204 | return 0; |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 205 | |
Patrick McHarrdy | 3c158f7 | 2007-06-05 12:55:27 -0700 | [diff] [blame] | 206 | helper = rcu_dereference(help->helper); |
| 207 | if (!helper) |
| 208 | goto out; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 209 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 210 | nest_helper = nla_nest_start(skb, CTA_HELP | NLA_F_NESTED); |
| 211 | if (!nest_helper) |
| 212 | goto nla_put_failure; |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 213 | if (nla_put_string(skb, CTA_HELP_NAME, helper->name)) |
| 214 | goto nla_put_failure; |
Patrick McHarrdy | 3c158f7 | 2007-06-05 12:55:27 -0700 | [diff] [blame] | 215 | |
Patrick McHardy | fdf7083 | 2007-09-28 14:37:41 -0700 | [diff] [blame] | 216 | if (helper->to_nlattr) |
| 217 | helper->to_nlattr(skb, ct); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 218 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 219 | nla_nest_end(skb, nest_helper); |
Patrick McHarrdy | 3c158f7 | 2007-06-05 12:55:27 -0700 | [diff] [blame] | 220 | out: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 221 | return 0; |
| 222 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 223 | nla_put_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 224 | return -1; |
| 225 | } |
| 226 | |
Ilpo Järvinen | bb5cf80 | 2008-01-05 23:11:31 -0800 | [diff] [blame] | 227 | static int |
Holger Eitzenberger | 4542fa4 | 2013-09-26 17:31:52 +0200 | [diff] [blame] | 228 | dump_counters(struct sk_buff *skb, struct nf_conn_acct *acct, |
| 229 | enum ip_conntrack_dir dir, int type) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 230 | { |
Holger Eitzenberger | 4542fa4 | 2013-09-26 17:31:52 +0200 | [diff] [blame] | 231 | enum ctattr_type attr = dir ? CTA_COUNTERS_REPLY: CTA_COUNTERS_ORIG; |
| 232 | struct nf_conn_counter *counter = acct->counter; |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 233 | struct nlattr *nest_count; |
Holger Eitzenberger | 4542fa4 | 2013-09-26 17:31:52 +0200 | [diff] [blame] | 234 | u64 pkts, bytes; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 235 | |
Holger Eitzenberger | 4542fa4 | 2013-09-26 17:31:52 +0200 | [diff] [blame] | 236 | if (type == IPCTNL_MSG_CT_GET_CTRZERO) { |
| 237 | pkts = atomic64_xchg(&counter[dir].packets, 0); |
| 238 | bytes = atomic64_xchg(&counter[dir].bytes, 0); |
| 239 | } else { |
| 240 | pkts = atomic64_read(&counter[dir].packets); |
| 241 | bytes = atomic64_read(&counter[dir].bytes); |
| 242 | } |
| 243 | |
| 244 | nest_count = nla_nest_start(skb, attr | NLA_F_NESTED); |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 245 | if (!nest_count) |
| 246 | goto nla_put_failure; |
| 247 | |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 248 | if (nla_put_be64(skb, CTA_COUNTERS_PACKETS, cpu_to_be64(pkts)) || |
| 249 | nla_put_be64(skb, CTA_COUNTERS_BYTES, cpu_to_be64(bytes))) |
| 250 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 251 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 252 | nla_nest_end(skb, nest_count); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 253 | |
| 254 | return 0; |
| 255 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 256 | nla_put_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 257 | return -1; |
| 258 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 259 | |
Pablo Neira Ayuso | a992ca2 | 2011-01-19 16:00:07 +0100 | [diff] [blame] | 260 | static int |
Holger Eitzenberger | 4542fa4 | 2013-09-26 17:31:52 +0200 | [diff] [blame] | 261 | 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] | 262 | { |
Holger Eitzenberger | 4542fa4 | 2013-09-26 17:31:52 +0200 | [diff] [blame] | 263 | struct nf_conn_acct *acct = nf_conn_acct_find(ct); |
Pablo Neira Ayuso | 80e60e6 | 2011-12-24 14:11:39 +0100 | [diff] [blame] | 264 | |
Pablo Neira Ayuso | 80e60e6 | 2011-12-24 14:11:39 +0100 | [diff] [blame] | 265 | if (!acct) |
| 266 | return 0; |
| 267 | |
Holger Eitzenberger | 4542fa4 | 2013-09-26 17:31:52 +0200 | [diff] [blame] | 268 | if (dump_counters(skb, acct, IP_CT_DIR_ORIGINAL, type) < 0) |
| 269 | return -1; |
| 270 | if (dump_counters(skb, acct, IP_CT_DIR_REPLY, type) < 0) |
| 271 | return -1; |
| 272 | |
| 273 | return 0; |
Pablo Neira Ayuso | 80e60e6 | 2011-12-24 14:11:39 +0100 | [diff] [blame] | 274 | } |
| 275 | |
| 276 | static int |
Pablo Neira Ayuso | a992ca2 | 2011-01-19 16:00:07 +0100 | [diff] [blame] | 277 | ctnetlink_dump_timestamp(struct sk_buff *skb, const struct nf_conn *ct) |
| 278 | { |
| 279 | struct nlattr *nest_count; |
| 280 | const struct nf_conn_tstamp *tstamp; |
| 281 | |
| 282 | tstamp = nf_conn_tstamp_find(ct); |
| 283 | if (!tstamp) |
| 284 | return 0; |
| 285 | |
| 286 | nest_count = nla_nest_start(skb, CTA_TIMESTAMP | NLA_F_NESTED); |
| 287 | if (!nest_count) |
| 288 | goto nla_put_failure; |
| 289 | |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 290 | if (nla_put_be64(skb, CTA_TIMESTAMP_START, cpu_to_be64(tstamp->start)) || |
| 291 | (tstamp->stop != 0 && nla_put_be64(skb, CTA_TIMESTAMP_STOP, |
| 292 | cpu_to_be64(tstamp->stop)))) |
| 293 | goto nla_put_failure; |
Pablo Neira Ayuso | a992ca2 | 2011-01-19 16:00:07 +0100 | [diff] [blame] | 294 | nla_nest_end(skb, nest_count); |
| 295 | |
| 296 | return 0; |
| 297 | |
| 298 | nla_put_failure: |
| 299 | return -1; |
| 300 | } |
| 301 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 302 | #ifdef CONFIG_NF_CONNTRACK_MARK |
| 303 | static inline int |
| 304 | ctnetlink_dump_mark(struct sk_buff *skb, const struct nf_conn *ct) |
| 305 | { |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 306 | if (nla_put_be32(skb, CTA_MARK, htonl(ct->mark))) |
| 307 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 308 | return 0; |
| 309 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 310 | nla_put_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 311 | return -1; |
| 312 | } |
| 313 | #else |
| 314 | #define ctnetlink_dump_mark(a, b) (0) |
| 315 | #endif |
| 316 | |
Pablo Neira Ayuso | 37fccd8 | 2007-12-17 22:28:41 -0800 | [diff] [blame] | 317 | #ifdef CONFIG_NF_CONNTRACK_SECMARK |
| 318 | static inline int |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 319 | 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] | 320 | { |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 321 | struct nlattr *nest_secctx; |
| 322 | int len, ret; |
| 323 | char *secctx; |
Pablo Neira Ayuso | 37fccd8 | 2007-12-17 22:28:41 -0800 | [diff] [blame] | 324 | |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 325 | ret = security_secid_to_secctx(ct->secmark, &secctx, &len); |
| 326 | if (ret) |
Pablo Neira Ayuso | cba85b5 | 2011-01-06 11:25:00 -0800 | [diff] [blame] | 327 | return 0; |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 328 | |
| 329 | ret = -1; |
| 330 | nest_secctx = nla_nest_start(skb, CTA_SECCTX | NLA_F_NESTED); |
| 331 | if (!nest_secctx) |
| 332 | goto nla_put_failure; |
| 333 | |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 334 | if (nla_put_string(skb, CTA_SECCTX_NAME, secctx)) |
| 335 | goto nla_put_failure; |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 336 | nla_nest_end(skb, nest_secctx); |
| 337 | |
| 338 | ret = 0; |
Pablo Neira Ayuso | 37fccd8 | 2007-12-17 22:28:41 -0800 | [diff] [blame] | 339 | nla_put_failure: |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 340 | security_release_secctx(secctx, len); |
| 341 | return ret; |
Pablo Neira Ayuso | 37fccd8 | 2007-12-17 22:28:41 -0800 | [diff] [blame] | 342 | } |
| 343 | #else |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 344 | #define ctnetlink_dump_secctx(a, b) (0) |
Pablo Neira Ayuso | 37fccd8 | 2007-12-17 22:28:41 -0800 | [diff] [blame] | 345 | #endif |
| 346 | |
Florian Westphal | 0ceabd8 | 2013-01-11 06:30:45 +0000 | [diff] [blame] | 347 | #ifdef CONFIG_NF_CONNTRACK_LABELS |
| 348 | static int ctnetlink_label_size(const struct nf_conn *ct) |
| 349 | { |
| 350 | struct nf_conn_labels *labels = nf_ct_labels_find(ct); |
| 351 | |
| 352 | if (!labels) |
| 353 | return 0; |
| 354 | return nla_total_size(labels->words * sizeof(long)); |
| 355 | } |
| 356 | |
| 357 | static int |
| 358 | ctnetlink_dump_labels(struct sk_buff *skb, const struct nf_conn *ct) |
| 359 | { |
| 360 | struct nf_conn_labels *labels = nf_ct_labels_find(ct); |
| 361 | unsigned int len, i; |
| 362 | |
| 363 | if (!labels) |
| 364 | return 0; |
| 365 | |
| 366 | len = labels->words * sizeof(long); |
| 367 | i = 0; |
| 368 | do { |
| 369 | if (labels->bits[i] != 0) |
| 370 | return nla_put(skb, CTA_LABELS, len, labels->bits); |
| 371 | i++; |
| 372 | } while (i < labels->words); |
| 373 | |
| 374 | return 0; |
| 375 | } |
| 376 | #else |
| 377 | #define ctnetlink_dump_labels(a, b) (0) |
| 378 | #define ctnetlink_label_size(a) (0) |
| 379 | #endif |
| 380 | |
Pablo Neira Ayuso | 0f417ce | 2007-12-17 22:28:19 -0800 | [diff] [blame] | 381 | #define master_tuple(ct) &(ct->master->tuplehash[IP_CT_DIR_ORIGINAL].tuple) |
| 382 | |
| 383 | static inline int |
| 384 | ctnetlink_dump_master(struct sk_buff *skb, const struct nf_conn *ct) |
| 385 | { |
| 386 | struct nlattr *nest_parms; |
| 387 | |
| 388 | if (!(ct->status & IPS_EXPECTED)) |
| 389 | return 0; |
| 390 | |
| 391 | nest_parms = nla_nest_start(skb, CTA_TUPLE_MASTER | NLA_F_NESTED); |
| 392 | if (!nest_parms) |
| 393 | goto nla_put_failure; |
| 394 | if (ctnetlink_dump_tuples(skb, master_tuple(ct)) < 0) |
| 395 | goto nla_put_failure; |
| 396 | nla_nest_end(skb, nest_parms); |
| 397 | |
| 398 | return 0; |
| 399 | |
| 400 | nla_put_failure: |
| 401 | return -1; |
| 402 | } |
| 403 | |
Ilpo Järvinen | bb5cf80 | 2008-01-05 23:11:31 -0800 | [diff] [blame] | 404 | static int |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 405 | 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] | 406 | { |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 407 | struct nlattr *nest_parms; |
| 408 | |
| 409 | nest_parms = nla_nest_start(skb, type | NLA_F_NESTED); |
| 410 | if (!nest_parms) |
| 411 | goto nla_put_failure; |
| 412 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 413 | if (nla_put_be32(skb, CTA_SEQADJ_CORRECTION_POS, |
| 414 | htonl(seq->correction_pos)) || |
| 415 | nla_put_be32(skb, CTA_SEQADJ_OFFSET_BEFORE, |
| 416 | htonl(seq->offset_before)) || |
| 417 | nla_put_be32(skb, CTA_SEQADJ_OFFSET_AFTER, |
| 418 | htonl(seq->offset_after))) |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 419 | goto nla_put_failure; |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 420 | |
| 421 | nla_nest_end(skb, nest_parms); |
| 422 | |
| 423 | return 0; |
| 424 | |
| 425 | nla_put_failure: |
| 426 | return -1; |
| 427 | } |
| 428 | |
| 429 | static inline int |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 430 | ctnetlink_dump_ct_seq_adj(struct sk_buff *skb, const struct nf_conn *ct) |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 431 | { |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 432 | struct nf_conn_seqadj *seqadj = nfct_seqadj(ct); |
| 433 | struct nf_ct_seqadj *seq; |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 434 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 435 | if (!(ct->status & IPS_SEQ_ADJUST) || !seqadj) |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 436 | return 0; |
| 437 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 438 | seq = &seqadj->seq[IP_CT_DIR_ORIGINAL]; |
| 439 | 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] | 440 | return -1; |
| 441 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 442 | seq = &seqadj->seq[IP_CT_DIR_REPLY]; |
| 443 | 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] | 444 | return -1; |
| 445 | |
| 446 | return 0; |
| 447 | } |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 448 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 449 | static inline int |
| 450 | ctnetlink_dump_id(struct sk_buff *skb, const struct nf_conn *ct) |
| 451 | { |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 452 | if (nla_put_be32(skb, CTA_ID, htonl((unsigned long)ct))) |
| 453 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 454 | return 0; |
| 455 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 456 | nla_put_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 457 | return -1; |
| 458 | } |
| 459 | |
| 460 | static inline int |
| 461 | ctnetlink_dump_use(struct sk_buff *skb, const struct nf_conn *ct) |
| 462 | { |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 463 | if (nla_put_be32(skb, CTA_USE, htonl(atomic_read(&ct->ct_general.use)))) |
| 464 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 465 | return 0; |
| 466 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 467 | nla_put_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 468 | return -1; |
| 469 | } |
| 470 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 471 | static int |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 472 | 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] | 473 | struct nf_conn *ct) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 474 | { |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 475 | const struct nf_conntrack_zone *zone; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 476 | struct nlmsghdr *nlh; |
| 477 | struct nfgenmsg *nfmsg; |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 478 | struct nlattr *nest_parms; |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 479 | unsigned int flags = portid ? NLM_F_MULTI : 0, event; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 480 | |
Pablo Neira Ayuso | 80e60e6 | 2011-12-24 14:11:39 +0100 | [diff] [blame] | 481 | event = (NFNL_SUBSYS_CTNETLINK << 8 | IPCTNL_MSG_CT_NEW); |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 482 | nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags); |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 483 | if (nlh == NULL) |
| 484 | goto nlmsg_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 485 | |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 486 | nfmsg = nlmsg_data(nlh); |
Patrick McHardy | 5e8fbe2 | 2008-04-14 11:15:52 +0200 | [diff] [blame] | 487 | nfmsg->nfgen_family = nf_ct_l3num(ct); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 488 | nfmsg->version = NFNETLINK_V0; |
| 489 | nfmsg->res_id = 0; |
| 490 | |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 491 | zone = nf_ct_zone(ct); |
| 492 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 493 | nest_parms = nla_nest_start(skb, CTA_TUPLE_ORIG | NLA_F_NESTED); |
| 494 | if (!nest_parms) |
| 495 | goto nla_put_failure; |
Pablo Neira Ayuso | f2f3e38 | 2009-06-02 20:03:35 +0200 | [diff] [blame] | 496 | 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] | 497 | goto nla_put_failure; |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 498 | if (ctnetlink_dump_zone_id(skb, CTA_TUPLE_ZONE, zone, |
| 499 | NF_CT_ZONE_DIR_ORIG) < 0) |
| 500 | goto nla_put_failure; |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 501 | nla_nest_end(skb, nest_parms); |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 502 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 503 | nest_parms = nla_nest_start(skb, CTA_TUPLE_REPLY | NLA_F_NESTED); |
| 504 | if (!nest_parms) |
| 505 | goto nla_put_failure; |
Pablo Neira Ayuso | f2f3e38 | 2009-06-02 20:03:35 +0200 | [diff] [blame] | 506 | 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] | 507 | goto nla_put_failure; |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 508 | if (ctnetlink_dump_zone_id(skb, CTA_TUPLE_ZONE, zone, |
| 509 | NF_CT_ZONE_DIR_REPL) < 0) |
| 510 | goto nla_put_failure; |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 511 | nla_nest_end(skb, nest_parms); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 512 | |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 513 | if (ctnetlink_dump_zone_id(skb, CTA_ZONE, zone, |
| 514 | NF_CT_DEFAULT_ZONE_DIR) < 0) |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 515 | goto nla_put_failure; |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 516 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 517 | if (ctnetlink_dump_status(skb, ct) < 0 || |
| 518 | ctnetlink_dump_timeout(skb, ct) < 0 || |
Holger Eitzenberger | 4542fa4 | 2013-09-26 17:31:52 +0200 | [diff] [blame] | 519 | ctnetlink_dump_acct(skb, ct, type) < 0 || |
Pablo Neira Ayuso | a992ca2 | 2011-01-19 16:00:07 +0100 | [diff] [blame] | 520 | ctnetlink_dump_timestamp(skb, ct) < 0 || |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 521 | ctnetlink_dump_protoinfo(skb, ct) < 0 || |
| 522 | ctnetlink_dump_helpinfo(skb, ct) < 0 || |
| 523 | ctnetlink_dump_mark(skb, ct) < 0 || |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 524 | ctnetlink_dump_secctx(skb, ct) < 0 || |
Florian Westphal | 0ceabd8 | 2013-01-11 06:30:45 +0000 | [diff] [blame] | 525 | ctnetlink_dump_labels(skb, ct) < 0 || |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 526 | ctnetlink_dump_id(skb, ct) < 0 || |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 527 | ctnetlink_dump_use(skb, ct) < 0 || |
Pablo Neira Ayuso | 0f417ce | 2007-12-17 22:28:19 -0800 | [diff] [blame] | 528 | ctnetlink_dump_master(skb, ct) < 0 || |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 529 | ctnetlink_dump_ct_seq_adj(skb, ct) < 0) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 530 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 531 | |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 532 | nlmsg_end(skb, nlh); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 533 | return skb->len; |
| 534 | |
| 535 | nlmsg_failure: |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 536 | nla_put_failure: |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 537 | nlmsg_cancel(skb, nlh); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 538 | return -1; |
| 539 | } |
| 540 | |
Pablo Neira Ayuso | 03b64f5 | 2009-06-02 20:08:27 +0200 | [diff] [blame] | 541 | static inline size_t |
| 542 | ctnetlink_proto_size(const struct nf_conn *ct) |
Holger Eitzenberger | 2732c4e | 2009-03-25 21:50:59 +0100 | [diff] [blame] | 543 | { |
| 544 | struct nf_conntrack_l3proto *l3proto; |
| 545 | struct nf_conntrack_l4proto *l4proto; |
Pablo Neira Ayuso | 03b64f5 | 2009-06-02 20:08:27 +0200 | [diff] [blame] | 546 | size_t len = 0; |
Holger Eitzenberger | 2732c4e | 2009-03-25 21:50:59 +0100 | [diff] [blame] | 547 | |
| 548 | rcu_read_lock(); |
Pablo Neira Ayuso | 03b64f5 | 2009-06-02 20:08:27 +0200 | [diff] [blame] | 549 | l3proto = __nf_ct_l3proto_find(nf_ct_l3num(ct)); |
Holger Eitzenberger | 2732c4e | 2009-03-25 21:50:59 +0100 | [diff] [blame] | 550 | len += l3proto->nla_size; |
| 551 | |
Pablo Neira Ayuso | 03b64f5 | 2009-06-02 20:08:27 +0200 | [diff] [blame] | 552 | 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] | 553 | len += l4proto->nla_size; |
| 554 | rcu_read_unlock(); |
| 555 | |
Pablo Neira Ayuso | 03b64f5 | 2009-06-02 20:08:27 +0200 | [diff] [blame] | 556 | return len; |
| 557 | } |
| 558 | |
| 559 | static inline size_t |
Holger Eitzenberger | f7b13e4 | 2013-09-26 17:31:51 +0200 | [diff] [blame] | 560 | ctnetlink_acct_size(const struct nf_conn *ct) |
Jiri Pirko | d26e6a0 | 2010-04-01 12:39:19 +0200 | [diff] [blame] | 561 | { |
| 562 | if (!nf_ct_ext_exist(ct, NF_CT_EXT_ACCT)) |
| 563 | return 0; |
| 564 | return 2 * nla_total_size(0) /* CTA_COUNTERS_ORIG|REPL */ |
| 565 | + 2 * nla_total_size(sizeof(uint64_t)) /* CTA_COUNTERS_PACKETS */ |
| 566 | + 2 * nla_total_size(sizeof(uint64_t)) /* CTA_COUNTERS_BYTES */ |
| 567 | ; |
| 568 | } |
| 569 | |
Pablo Neira Ayuso | cba85b5 | 2011-01-06 11:25:00 -0800 | [diff] [blame] | 570 | static inline int |
| 571 | ctnetlink_secctx_size(const struct nf_conn *ct) |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 572 | { |
Pablo Neira Ayuso | cba85b5 | 2011-01-06 11:25:00 -0800 | [diff] [blame] | 573 | #ifdef CONFIG_NF_CONNTRACK_SECMARK |
| 574 | int len, ret; |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 575 | |
Pablo Neira Ayuso | cba85b5 | 2011-01-06 11:25:00 -0800 | [diff] [blame] | 576 | ret = security_secid_to_secctx(ct->secmark, NULL, &len); |
| 577 | if (ret) |
| 578 | return 0; |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 579 | |
Pablo Neira Ayuso | cba85b5 | 2011-01-06 11:25:00 -0800 | [diff] [blame] | 580 | return nla_total_size(0) /* CTA_SECCTX */ |
| 581 | + nla_total_size(sizeof(char) * len); /* CTA_SECCTX_NAME */ |
| 582 | #else |
| 583 | return 0; |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 584 | #endif |
Pablo Neira Ayuso | cba85b5 | 2011-01-06 11:25:00 -0800 | [diff] [blame] | 585 | } |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 586 | |
Jiri Pirko | d26e6a0 | 2010-04-01 12:39:19 +0200 | [diff] [blame] | 587 | static inline size_t |
Pablo Neira Ayuso | a992ca2 | 2011-01-19 16:00:07 +0100 | [diff] [blame] | 588 | ctnetlink_timestamp_size(const struct nf_conn *ct) |
| 589 | { |
| 590 | #ifdef CONFIG_NF_CONNTRACK_TIMESTAMP |
| 591 | if (!nf_ct_ext_exist(ct, NF_CT_EXT_TSTAMP)) |
| 592 | return 0; |
| 593 | return nla_total_size(0) + 2 * nla_total_size(sizeof(uint64_t)); |
| 594 | #else |
| 595 | return 0; |
| 596 | #endif |
| 597 | } |
| 598 | |
| 599 | static inline size_t |
Pablo Neira Ayuso | 03b64f5 | 2009-06-02 20:08:27 +0200 | [diff] [blame] | 600 | ctnetlink_nlmsg_size(const struct nf_conn *ct) |
| 601 | { |
| 602 | return NLMSG_ALIGN(sizeof(struct nfgenmsg)) |
| 603 | + 3 * nla_total_size(0) /* CTA_TUPLE_ORIG|REPL|MASTER */ |
| 604 | + 3 * nla_total_size(0) /* CTA_TUPLE_IP */ |
| 605 | + 3 * nla_total_size(0) /* CTA_TUPLE_PROTO */ |
| 606 | + 3 * nla_total_size(sizeof(u_int8_t)) /* CTA_PROTO_NUM */ |
| 607 | + nla_total_size(sizeof(u_int32_t)) /* CTA_ID */ |
| 608 | + nla_total_size(sizeof(u_int32_t)) /* CTA_STATUS */ |
Holger Eitzenberger | f7b13e4 | 2013-09-26 17:31:51 +0200 | [diff] [blame] | 609 | + ctnetlink_acct_size(ct) |
Pablo Neira Ayuso | a992ca2 | 2011-01-19 16:00:07 +0100 | [diff] [blame] | 610 | + ctnetlink_timestamp_size(ct) |
Pablo Neira Ayuso | 03b64f5 | 2009-06-02 20:08:27 +0200 | [diff] [blame] | 611 | + nla_total_size(sizeof(u_int32_t)) /* CTA_TIMEOUT */ |
| 612 | + nla_total_size(0) /* CTA_PROTOINFO */ |
| 613 | + nla_total_size(0) /* CTA_HELP */ |
| 614 | + nla_total_size(NF_CT_HELPER_NAME_LEN) /* CTA_HELP_NAME */ |
Pablo Neira Ayuso | cba85b5 | 2011-01-06 11:25:00 -0800 | [diff] [blame] | 615 | + ctnetlink_secctx_size(ct) |
Pablo Neira Ayuso | 03b64f5 | 2009-06-02 20:08:27 +0200 | [diff] [blame] | 616 | #ifdef CONFIG_NF_NAT_NEEDED |
| 617 | + 2 * nla_total_size(0) /* CTA_NAT_SEQ_ADJ_ORIG|REPL */ |
| 618 | + 6 * nla_total_size(sizeof(u_int32_t)) /* CTA_NAT_SEQ_OFFSET */ |
| 619 | #endif |
| 620 | #ifdef CONFIG_NF_CONNTRACK_MARK |
| 621 | + nla_total_size(sizeof(u_int32_t)) /* CTA_MARK */ |
| 622 | #endif |
Ken-ichirou MATSUZAWA | 4a00106 | 2014-06-16 13:52:34 +0200 | [diff] [blame] | 623 | #ifdef CONFIG_NF_CONNTRACK_ZONES |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 624 | + 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] | 625 | #endif |
Pablo Neira Ayuso | 03b64f5 | 2009-06-02 20:08:27 +0200 | [diff] [blame] | 626 | + ctnetlink_proto_size(ct) |
Florian Westphal | 0ceabd8 | 2013-01-11 06:30:45 +0000 | [diff] [blame] | 627 | + ctnetlink_label_size(ct) |
Pablo Neira Ayuso | 03b64f5 | 2009-06-02 20:08:27 +0200 | [diff] [blame] | 628 | ; |
Holger Eitzenberger | 2732c4e | 2009-03-25 21:50:59 +0100 | [diff] [blame] | 629 | } |
| 630 | |
Pablo Neira Ayuso | 8e36c4b | 2012-06-23 01:43:51 +0200 | [diff] [blame] | 631 | #ifdef CONFIG_NF_CONNTRACK_EVENTS |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 632 | static int |
| 633 | ctnetlink_conntrack_event(unsigned int events, struct nf_ct_event *item) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 634 | { |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 635 | const struct nf_conntrack_zone *zone; |
Alexey Dobriyan | 9592a5c | 2010-01-13 16:04:18 +0100 | [diff] [blame] | 636 | struct net *net; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 637 | struct nlmsghdr *nlh; |
| 638 | struct nfgenmsg *nfmsg; |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 639 | struct nlattr *nest_parms; |
Pablo Neira Ayuso | 19abb7b | 2008-11-18 11:56:20 +0100 | [diff] [blame] | 640 | struct nf_conn *ct = item->ct; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 641 | struct sk_buff *skb; |
| 642 | unsigned int type; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 643 | unsigned int flags = 0, group; |
Pablo Neira Ayuso | dd7669a | 2009-06-13 12:30:52 +0200 | [diff] [blame] | 644 | int err; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 645 | |
| 646 | /* ignore our fake conntrack entry */ |
Eric Dumazet | 5bfddbd | 2010-06-08 16:09:52 +0200 | [diff] [blame] | 647 | if (nf_ct_is_untracked(ct)) |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 648 | return 0; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 649 | |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 650 | if (events & (1 << IPCT_DESTROY)) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 651 | type = IPCTNL_MSG_CT_DELETE; |
| 652 | group = NFNLGRP_CONNTRACK_DESTROY; |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 653 | } else if (events & ((1 << IPCT_NEW) | (1 << IPCT_RELATED))) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 654 | type = IPCTNL_MSG_CT_NEW; |
| 655 | flags = NLM_F_CREATE|NLM_F_EXCL; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 656 | group = NFNLGRP_CONNTRACK_NEW; |
Pablo Neira Ayuso | 17e6e4e | 2009-06-02 20:08:46 +0200 | [diff] [blame] | 657 | } else if (events) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 658 | type = IPCTNL_MSG_CT_NEW; |
| 659 | group = NFNLGRP_CONNTRACK_UPDATE; |
| 660 | } else |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 661 | return 0; |
Patrick McHardy | a242769 | 2006-03-20 18:03:59 -0800 | [diff] [blame] | 662 | |
Alexey Dobriyan | 9592a5c | 2010-01-13 16:04:18 +0100 | [diff] [blame] | 663 | net = nf_ct_net(ct); |
| 664 | if (!item->report && !nfnetlink_has_listeners(net, group)) |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 665 | return 0; |
Patrick McHardy | a242769 | 2006-03-20 18:03:59 -0800 | [diff] [blame] | 666 | |
Pablo Neira Ayuso | 03b64f5 | 2009-06-02 20:08:27 +0200 | [diff] [blame] | 667 | skb = nlmsg_new(ctnetlink_nlmsg_size(ct), GFP_ATOMIC); |
| 668 | if (skb == NULL) |
Pablo Neira Ayuso | 150ace0 | 2009-04-17 17:47:31 +0200 | [diff] [blame] | 669 | goto errout; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 670 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 671 | type |= NFNL_SUBSYS_CTNETLINK << 8; |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 672 | nlh = nlmsg_put(skb, item->portid, 0, type, sizeof(*nfmsg), flags); |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 673 | if (nlh == NULL) |
| 674 | goto nlmsg_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 675 | |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 676 | nfmsg = nlmsg_data(nlh); |
Patrick McHardy | 5e8fbe2 | 2008-04-14 11:15:52 +0200 | [diff] [blame] | 677 | nfmsg->nfgen_family = nf_ct_l3num(ct); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 678 | nfmsg->version = NFNETLINK_V0; |
| 679 | nfmsg->res_id = 0; |
| 680 | |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 681 | rcu_read_lock(); |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 682 | zone = nf_ct_zone(ct); |
| 683 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 684 | nest_parms = nla_nest_start(skb, CTA_TUPLE_ORIG | NLA_F_NESTED); |
| 685 | if (!nest_parms) |
| 686 | goto nla_put_failure; |
Pablo Neira Ayuso | f2f3e38 | 2009-06-02 20:03:35 +0200 | [diff] [blame] | 687 | 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] | 688 | goto nla_put_failure; |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 689 | if (ctnetlink_dump_zone_id(skb, CTA_TUPLE_ZONE, zone, |
| 690 | NF_CT_ZONE_DIR_ORIG) < 0) |
| 691 | goto nla_put_failure; |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 692 | nla_nest_end(skb, nest_parms); |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 693 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 694 | nest_parms = nla_nest_start(skb, CTA_TUPLE_REPLY | NLA_F_NESTED); |
| 695 | if (!nest_parms) |
| 696 | goto nla_put_failure; |
Pablo Neira Ayuso | f2f3e38 | 2009-06-02 20:03:35 +0200 | [diff] [blame] | 697 | 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] | 698 | goto nla_put_failure; |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 699 | if (ctnetlink_dump_zone_id(skb, CTA_TUPLE_ZONE, zone, |
| 700 | NF_CT_ZONE_DIR_REPL) < 0) |
| 701 | goto nla_put_failure; |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 702 | nla_nest_end(skb, nest_parms); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 703 | |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 704 | if (ctnetlink_dump_zone_id(skb, CTA_ZONE, zone, |
| 705 | NF_CT_DEFAULT_ZONE_DIR) < 0) |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 706 | goto nla_put_failure; |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 707 | |
Eric Leblond | 1eedf69 | 2008-05-13 23:27:11 -0700 | [diff] [blame] | 708 | if (ctnetlink_dump_id(skb, ct) < 0) |
| 709 | goto nla_put_failure; |
| 710 | |
Fabian Hugelshofer | e57dce6 | 2008-06-09 15:59:58 -0700 | [diff] [blame] | 711 | if (ctnetlink_dump_status(skb, ct) < 0) |
| 712 | goto nla_put_failure; |
| 713 | |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 714 | if (events & (1 << IPCT_DESTROY)) { |
Holger Eitzenberger | 4542fa4 | 2013-09-26 17:31:52 +0200 | [diff] [blame] | 715 | if (ctnetlink_dump_acct(skb, ct, type) < 0 || |
Pablo Neira Ayuso | a992ca2 | 2011-01-19 16:00:07 +0100 | [diff] [blame] | 716 | ctnetlink_dump_timestamp(skb, ct) < 0) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 717 | goto nla_put_failure; |
Pablo Neira Ayuso | 7b621c1 | 2006-11-29 02:35:32 +0100 | [diff] [blame] | 718 | } else { |
Pablo Neira Ayuso | 7b621c1 | 2006-11-29 02:35:32 +0100 | [diff] [blame] | 719 | if (ctnetlink_dump_timeout(skb, ct) < 0) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 720 | goto nla_put_failure; |
Pablo Neira Ayuso | 7b621c1 | 2006-11-29 02:35:32 +0100 | [diff] [blame] | 721 | |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 722 | if (events & (1 << IPCT_PROTOINFO) |
Pablo Neira Ayuso | 7b621c1 | 2006-11-29 02:35:32 +0100 | [diff] [blame] | 723 | && ctnetlink_dump_protoinfo(skb, ct) < 0) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 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_HELPER) || nfct_help(ct)) |
Pablo Neira Ayuso | 7b621c1 | 2006-11-29 02:35:32 +0100 | [diff] [blame] | 727 | && ctnetlink_dump_helpinfo(skb, ct) < 0) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 728 | goto nla_put_failure; |
Pablo Neira Ayuso | 7b621c1 | 2006-11-29 02:35:32 +0100 | [diff] [blame] | 729 | |
Eric Paris | ff660c8 | 2010-10-19 18:17:32 -0400 | [diff] [blame] | 730 | #ifdef CONFIG_NF_CONNTRACK_SECMARK |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 731 | if ((events & (1 << IPCT_SECMARK) || ct->secmark) |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 732 | && ctnetlink_dump_secctx(skb, ct) < 0) |
Pablo Neira Ayuso | 37fccd8 | 2007-12-17 22:28:41 -0800 | [diff] [blame] | 733 | goto nla_put_failure; |
Eric Paris | ff660c8 | 2010-10-19 18:17:32 -0400 | [diff] [blame] | 734 | #endif |
Florian Westphal | 0ceabd8 | 2013-01-11 06:30:45 +0000 | [diff] [blame] | 735 | if (events & (1 << IPCT_LABEL) && |
| 736 | ctnetlink_dump_labels(skb, ct) < 0) |
| 737 | goto nla_put_failure; |
Pablo Neira Ayuso | 7b621c1 | 2006-11-29 02:35:32 +0100 | [diff] [blame] | 738 | |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 739 | if (events & (1 << IPCT_RELATED) && |
Pablo Neira Ayuso | 0f417ce | 2007-12-17 22:28:19 -0800 | [diff] [blame] | 740 | ctnetlink_dump_master(skb, ct) < 0) |
| 741 | goto nla_put_failure; |
| 742 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 743 | if (events & (1 << IPCT_SEQADJ) && |
| 744 | ctnetlink_dump_ct_seq_adj(skb, ct) < 0) |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 745 | goto nla_put_failure; |
Pablo Neira Ayuso | 7b621c1 | 2006-11-29 02:35:32 +0100 | [diff] [blame] | 746 | } |
Pablo Neira Ayuso | b9a37e0 | 2006-08-22 00:31:49 -0700 | [diff] [blame] | 747 | |
Eric Leblond | a83099a | 2008-01-31 04:44:27 -0800 | [diff] [blame] | 748 | #ifdef CONFIG_NF_CONNTRACK_MARK |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 749 | if ((events & (1 << IPCT_MARK) || ct->mark) |
Eric Leblond | a83099a | 2008-01-31 04:44:27 -0800 | [diff] [blame] | 750 | && ctnetlink_dump_mark(skb, ct) < 0) |
| 751 | goto nla_put_failure; |
| 752 | #endif |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 753 | rcu_read_unlock(); |
Eric Leblond | a83099a | 2008-01-31 04:44:27 -0800 | [diff] [blame] | 754 | |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 755 | nlmsg_end(skb, nlh); |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 756 | err = nfnetlink_send(skb, net, item->portid, group, item->report, |
Alexey Dobriyan | cd8c20b | 2010-01-13 16:02:14 +0100 | [diff] [blame] | 757 | GFP_ATOMIC); |
Pablo Neira Ayuso | dd7669a | 2009-06-13 12:30:52 +0200 | [diff] [blame] | 758 | if (err == -ENOBUFS || err == -EAGAIN) |
| 759 | return -ENOBUFS; |
| 760 | |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 761 | return 0; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 762 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 763 | nla_put_failure: |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 764 | rcu_read_unlock(); |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 765 | nlmsg_cancel(skb, nlh); |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 766 | nlmsg_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 767 | kfree_skb(skb); |
Pablo Neira Ayuso | 150ace0 | 2009-04-17 17:47:31 +0200 | [diff] [blame] | 768 | errout: |
Pablo Neira Ayuso | 37b7ef7 | 2010-03-16 13:30:21 +0000 | [diff] [blame] | 769 | if (nfnetlink_set_err(net, 0, group, -ENOBUFS) > 0) |
| 770 | return -ENOBUFS; |
| 771 | |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 772 | return 0; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 773 | } |
| 774 | #endif /* CONFIG_NF_CONNTRACK_EVENTS */ |
| 775 | |
| 776 | static int ctnetlink_done(struct netlink_callback *cb) |
| 777 | { |
Patrick McHardy | 89f2e21 | 2006-05-29 18:24:58 -0700 | [diff] [blame] | 778 | if (cb->args[1]) |
| 779 | nf_ct_put((struct nf_conn *)cb->args[1]); |
Fabian Frederick | 397304b | 2014-06-20 22:38:58 +0200 | [diff] [blame] | 780 | kfree(cb->data); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 781 | return 0; |
| 782 | } |
| 783 | |
Kristian Evensen | 866476f | 2014-12-24 09:57:10 +0100 | [diff] [blame] | 784 | struct ctnetlink_filter { |
Pablo Neira Ayuso | 0f298a2 | 2012-02-24 14:41:50 +0000 | [diff] [blame] | 785 | struct { |
| 786 | u_int32_t val; |
| 787 | u_int32_t mask; |
| 788 | } mark; |
| 789 | }; |
| 790 | |
Kristian Evensen | 866476f | 2014-12-24 09:57:10 +0100 | [diff] [blame] | 791 | static struct ctnetlink_filter * |
| 792 | ctnetlink_alloc_filter(const struct nlattr * const cda[]) |
| 793 | { |
| 794 | #ifdef CONFIG_NF_CONNTRACK_MARK |
| 795 | struct ctnetlink_filter *filter; |
| 796 | |
| 797 | filter = kzalloc(sizeof(*filter), GFP_KERNEL); |
| 798 | if (filter == NULL) |
| 799 | return ERR_PTR(-ENOMEM); |
| 800 | |
| 801 | filter->mark.val = ntohl(nla_get_be32(cda[CTA_MARK])); |
| 802 | filter->mark.mask = ntohl(nla_get_be32(cda[CTA_MARK_MASK])); |
| 803 | |
| 804 | return filter; |
| 805 | #else |
| 806 | return ERR_PTR(-EOPNOTSUPP); |
| 807 | #endif |
| 808 | } |
| 809 | |
| 810 | static int ctnetlink_filter_match(struct nf_conn *ct, void *data) |
| 811 | { |
| 812 | struct ctnetlink_filter *filter = data; |
| 813 | |
| 814 | if (filter == NULL) |
| 815 | return 1; |
| 816 | |
| 817 | #ifdef CONFIG_NF_CONNTRACK_MARK |
| 818 | if ((ct->mark & filter->mark.mask) == filter->mark.val) |
| 819 | return 1; |
| 820 | #endif |
| 821 | |
| 822 | return 0; |
| 823 | } |
| 824 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 825 | static int |
| 826 | ctnetlink_dump_table(struct sk_buff *skb, struct netlink_callback *cb) |
| 827 | { |
Alexey Dobriyan | 9592a5c | 2010-01-13 16:04:18 +0100 | [diff] [blame] | 828 | struct net *net = sock_net(skb->sk); |
Patrick McHardy | 89f2e21 | 2006-05-29 18:24:58 -0700 | [diff] [blame] | 829 | struct nf_conn *ct, *last; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 830 | struct nf_conntrack_tuple_hash *h; |
Eric Dumazet | ea781f1 | 2009-03-25 21:05:46 +0100 | [diff] [blame] | 831 | struct hlist_nulls_node *n; |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 832 | struct nfgenmsg *nfmsg = nlmsg_data(cb->nlh); |
Pablo Neira Ayuso | 87711cb | 2006-01-05 12:19:23 -0800 | [diff] [blame] | 833 | u_int8_t l3proto = nfmsg->nfgen_family; |
Hans Schillstrom | 3b988ec | 2012-03-05 02:24:29 +0000 | [diff] [blame] | 834 | int res; |
Jesper Dangaard Brouer | 93bb0ce | 2014-03-03 14:46:13 +0100 | [diff] [blame] | 835 | spinlock_t *lockp; |
| 836 | |
Patrick McHardy | d205dc4 | 2006-08-17 18:12:38 -0700 | [diff] [blame] | 837 | last = (struct nf_conn *)cb->args[1]; |
Jesper Dangaard Brouer | 93bb0ce | 2014-03-03 14:46:13 +0100 | [diff] [blame] | 838 | |
| 839 | local_bh_disable(); |
Patrick McHardy | 9ab99d5 | 2010-02-10 14:17:10 +0100 | [diff] [blame] | 840 | for (; cb->args[0] < net->ct.htable_size; cb->args[0]++) { |
Patrick McHardy | 89f2e21 | 2006-05-29 18:24:58 -0700 | [diff] [blame] | 841 | restart: |
Jesper Dangaard Brouer | 93bb0ce | 2014-03-03 14:46:13 +0100 | [diff] [blame] | 842 | lockp = &nf_conntrack_locks[cb->args[0] % CONNTRACK_LOCKS]; |
Sasha Levin | b16c291 | 2016-01-18 19:23:51 -0500 | [diff] [blame^] | 843 | nf_conntrack_lock(lockp); |
Jesper Dangaard Brouer | 93bb0ce | 2014-03-03 14:46:13 +0100 | [diff] [blame] | 844 | if (cb->args[0] >= net->ct.htable_size) { |
| 845 | spin_unlock(lockp); |
| 846 | goto out; |
| 847 | } |
Stephen Hemminger | 13ee6ac | 2011-01-11 23:54:42 +0100 | [diff] [blame] | 848 | hlist_nulls_for_each_entry(h, n, &net->ct.hash[cb->args[0]], |
Eric Dumazet | ea781f1 | 2009-03-25 21:05:46 +0100 | [diff] [blame] | 849 | hnnode) { |
Jozsef Kadlecsik | 5b1158e | 2006-12-02 22:07:13 -0800 | [diff] [blame] | 850 | if (NF_CT_DIRECTION(h) != IP_CT_DIR_ORIGINAL) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 851 | continue; |
| 852 | ct = nf_ct_tuplehash_to_ctrack(h); |
Pablo Neira Ayuso | 87711cb | 2006-01-05 12:19:23 -0800 | [diff] [blame] | 853 | /* Dump entries of a given L3 protocol number. |
| 854 | * If it is not specified, ie. l3proto == 0, |
| 855 | * then dump everything. */ |
Patrick McHardy | 5e8fbe2 | 2008-04-14 11:15:52 +0200 | [diff] [blame] | 856 | if (l3proto && nf_ct_l3num(ct) != l3proto) |
Stephen Hemminger | 13ee6ac | 2011-01-11 23:54:42 +0100 | [diff] [blame] | 857 | continue; |
Patrick McHardy | d205dc4 | 2006-08-17 18:12:38 -0700 | [diff] [blame] | 858 | if (cb->args[1]) { |
| 859 | if (ct != last) |
Stephen Hemminger | 13ee6ac | 2011-01-11 23:54:42 +0100 | [diff] [blame] | 860 | continue; |
Patrick McHardy | d205dc4 | 2006-08-17 18:12:38 -0700 | [diff] [blame] | 861 | cb->args[1] = 0; |
Patrick McHardy | 89f2e21 | 2006-05-29 18:24:58 -0700 | [diff] [blame] | 862 | } |
Kristian Evensen | 866476f | 2014-12-24 09:57:10 +0100 | [diff] [blame] | 863 | if (!ctnetlink_filter_match(ct, cb->data)) |
Pablo Neira Ayuso | 0f298a2 | 2012-02-24 14:41:50 +0000 | [diff] [blame] | 864 | continue; |
Kristian Evensen | 866476f | 2014-12-24 09:57:10 +0100 | [diff] [blame] | 865 | |
Hans Schillstrom | 3b988ec | 2012-03-05 02:24:29 +0000 | [diff] [blame] | 866 | rcu_read_lock(); |
| 867 | res = |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 868 | ctnetlink_fill_info(skb, NETLINK_CB(cb->skb).portid, |
Hans Schillstrom | 3b988ec | 2012-03-05 02:24:29 +0000 | [diff] [blame] | 869 | cb->nlh->nlmsg_seq, |
| 870 | NFNL_MSG_TYPE(cb->nlh->nlmsg_type), |
| 871 | ct); |
| 872 | rcu_read_unlock(); |
| 873 | if (res < 0) { |
Pablo Neira Ayuso | c71caf4 | 2011-01-24 19:01:07 +0100 | [diff] [blame] | 874 | nf_conntrack_get(&ct->ct_general); |
Patrick McHardy | 89f2e21 | 2006-05-29 18:24:58 -0700 | [diff] [blame] | 875 | cb->args[1] = (unsigned long)ct; |
Jesper Dangaard Brouer | 93bb0ce | 2014-03-03 14:46:13 +0100 | [diff] [blame] | 876 | spin_unlock(lockp); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 877 | goto out; |
Patrick McHardy | 89f2e21 | 2006-05-29 18:24:58 -0700 | [diff] [blame] | 878 | } |
| 879 | } |
Jesper Dangaard Brouer | 93bb0ce | 2014-03-03 14:46:13 +0100 | [diff] [blame] | 880 | spin_unlock(lockp); |
Patrick McHardy | d205dc4 | 2006-08-17 18:12:38 -0700 | [diff] [blame] | 881 | if (cb->args[1]) { |
Patrick McHardy | 89f2e21 | 2006-05-29 18:24:58 -0700 | [diff] [blame] | 882 | cb->args[1] = 0; |
| 883 | goto restart; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 884 | } |
| 885 | } |
Patrick McHardy | 89f2e21 | 2006-05-29 18:24:58 -0700 | [diff] [blame] | 886 | out: |
Jesper Dangaard Brouer | 93bb0ce | 2014-03-03 14:46:13 +0100 | [diff] [blame] | 887 | local_bh_enable(); |
Patrick McHardy | d205dc4 | 2006-08-17 18:12:38 -0700 | [diff] [blame] | 888 | if (last) |
| 889 | nf_ct_put(last); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 890 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 891 | return skb->len; |
| 892 | } |
| 893 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 894 | static inline int |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 895 | ctnetlink_parse_tuple_ip(struct nlattr *attr, struct nf_conntrack_tuple *tuple) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 896 | { |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 897 | struct nlattr *tb[CTA_IP_MAX+1]; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 898 | struct nf_conntrack_l3proto *l3proto; |
| 899 | int ret = 0; |
| 900 | |
Daniel Borkmann | 130ffbc | 2013-06-12 17:54:51 +0200 | [diff] [blame] | 901 | ret = nla_parse_nested(tb, CTA_IP_MAX, attr, NULL); |
| 902 | if (ret < 0) |
| 903 | return ret; |
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_lock(); |
| 906 | l3proto = __nf_ct_l3proto_find(tuple->src.l3num); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 907 | |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 908 | if (likely(l3proto->nlattr_to_tuple)) { |
| 909 | ret = nla_validate_nested(attr, CTA_IP_MAX, |
| 910 | l3proto->nla_policy); |
| 911 | if (ret == 0) |
| 912 | ret = l3proto->nlattr_to_tuple(tb, tuple); |
| 913 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 914 | |
Florian Westphal | cd91566 | 2009-03-18 17:28:37 +0100 | [diff] [blame] | 915 | rcu_read_unlock(); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 916 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 917 | return ret; |
| 918 | } |
| 919 | |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 920 | static const struct nla_policy proto_nla_policy[CTA_PROTO_MAX+1] = { |
| 921 | [CTA_PROTO_NUM] = { .type = NLA_U8 }, |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 922 | }; |
| 923 | |
| 924 | static inline int |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 925 | ctnetlink_parse_tuple_proto(struct nlattr *attr, |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 926 | struct nf_conntrack_tuple *tuple) |
| 927 | { |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 928 | struct nlattr *tb[CTA_PROTO_MAX+1]; |
Martin Josefsson | 605dcad | 2006-11-29 02:35:06 +0100 | [diff] [blame] | 929 | struct nf_conntrack_l4proto *l4proto; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 930 | int ret = 0; |
| 931 | |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 932 | ret = nla_parse_nested(tb, CTA_PROTO_MAX, attr, proto_nla_policy); |
| 933 | if (ret < 0) |
| 934 | return ret; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 935 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 936 | if (!tb[CTA_PROTO_NUM]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 937 | return -EINVAL; |
Patrick McHardy | 77236b6 | 2007-12-17 22:29:45 -0800 | [diff] [blame] | 938 | tuple->dst.protonum = nla_get_u8(tb[CTA_PROTO_NUM]); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 939 | |
Florian Westphal | cd91566 | 2009-03-18 17:28:37 +0100 | [diff] [blame] | 940 | rcu_read_lock(); |
| 941 | l4proto = __nf_ct_l4proto_find(tuple->src.l3num, tuple->dst.protonum); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 942 | |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 943 | if (likely(l4proto->nlattr_to_tuple)) { |
| 944 | ret = nla_validate_nested(attr, CTA_PROTO_MAX, |
| 945 | l4proto->nla_policy); |
| 946 | if (ret == 0) |
| 947 | ret = l4proto->nlattr_to_tuple(tb, tuple); |
| 948 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 949 | |
Florian Westphal | cd91566 | 2009-03-18 17:28:37 +0100 | [diff] [blame] | 950 | rcu_read_unlock(); |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 951 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 952 | return ret; |
| 953 | } |
| 954 | |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 955 | static int |
| 956 | ctnetlink_parse_zone(const struct nlattr *attr, |
| 957 | struct nf_conntrack_zone *zone) |
| 958 | { |
Daniel Borkmann | 5e8018f | 2015-08-14 16:03:40 +0200 | [diff] [blame] | 959 | nf_ct_zone_init(zone, NF_CT_DEFAULT_ZONE_ID, |
| 960 | NF_CT_DEFAULT_ZONE_DIR, 0); |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 961 | #ifdef CONFIG_NF_CONNTRACK_ZONES |
| 962 | if (attr) |
| 963 | zone->id = ntohs(nla_get_be16(attr)); |
| 964 | #else |
| 965 | if (attr) |
| 966 | return -EOPNOTSUPP; |
| 967 | #endif |
| 968 | return 0; |
| 969 | } |
| 970 | |
| 971 | static int |
| 972 | ctnetlink_parse_tuple_zone(struct nlattr *attr, enum ctattr_type type, |
| 973 | struct nf_conntrack_zone *zone) |
| 974 | { |
| 975 | int ret; |
| 976 | |
| 977 | if (zone->id != NF_CT_DEFAULT_ZONE_ID) |
| 978 | return -EINVAL; |
| 979 | |
| 980 | ret = ctnetlink_parse_zone(attr, zone); |
| 981 | if (ret < 0) |
| 982 | return ret; |
| 983 | |
| 984 | if (type == CTA_TUPLE_REPLY) |
| 985 | zone->dir = NF_CT_ZONE_DIR_REPL; |
| 986 | else |
| 987 | zone->dir = NF_CT_ZONE_DIR_ORIG; |
| 988 | |
| 989 | return 0; |
| 990 | } |
| 991 | |
Patrick McHardy | d0b0268 | 2010-02-10 15:38:33 +0100 | [diff] [blame] | 992 | static const struct nla_policy tuple_nla_policy[CTA_TUPLE_MAX+1] = { |
| 993 | [CTA_TUPLE_IP] = { .type = NLA_NESTED }, |
| 994 | [CTA_TUPLE_PROTO] = { .type = NLA_NESTED }, |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 995 | [CTA_TUPLE_ZONE] = { .type = NLA_U16 }, |
Patrick McHardy | d0b0268 | 2010-02-10 15:38:33 +0100 | [diff] [blame] | 996 | }; |
| 997 | |
Ilpo Järvinen | bb5cf80 | 2008-01-05 23:11:31 -0800 | [diff] [blame] | 998 | static int |
Patrick McHardy | 3993832 | 2009-08-25 16:07:58 +0200 | [diff] [blame] | 999 | ctnetlink_parse_tuple(const struct nlattr * const cda[], |
| 1000 | struct nf_conntrack_tuple *tuple, |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 1001 | enum ctattr_type type, u_int8_t l3num, |
| 1002 | struct nf_conntrack_zone *zone) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1003 | { |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1004 | struct nlattr *tb[CTA_TUPLE_MAX+1]; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1005 | int err; |
| 1006 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1007 | memset(tuple, 0, sizeof(*tuple)); |
| 1008 | |
Daniel Borkmann | 130ffbc | 2013-06-12 17:54:51 +0200 | [diff] [blame] | 1009 | err = nla_parse_nested(tb, CTA_TUPLE_MAX, cda[type], tuple_nla_policy); |
| 1010 | if (err < 0) |
| 1011 | return err; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1012 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1013 | if (!tb[CTA_TUPLE_IP]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1014 | return -EINVAL; |
| 1015 | |
| 1016 | tuple->src.l3num = l3num; |
| 1017 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1018 | err = ctnetlink_parse_tuple_ip(tb[CTA_TUPLE_IP], tuple); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1019 | if (err < 0) |
| 1020 | return err; |
| 1021 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1022 | if (!tb[CTA_TUPLE_PROTO]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1023 | return -EINVAL; |
| 1024 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1025 | err = ctnetlink_parse_tuple_proto(tb[CTA_TUPLE_PROTO], tuple); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1026 | if (err < 0) |
| 1027 | return err; |
| 1028 | |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 1029 | if (tb[CTA_TUPLE_ZONE]) { |
| 1030 | if (!zone) |
| 1031 | return -EINVAL; |
| 1032 | |
| 1033 | err = ctnetlink_parse_tuple_zone(tb[CTA_TUPLE_ZONE], |
| 1034 | type, zone); |
| 1035 | if (err < 0) |
| 1036 | return err; |
| 1037 | } |
| 1038 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1039 | /* orig and expect tuples get DIR_ORIGINAL */ |
| 1040 | if (type == CTA_TUPLE_REPLY) |
| 1041 | tuple->dst.dir = IP_CT_DIR_REPLY; |
| 1042 | else |
| 1043 | tuple->dst.dir = IP_CT_DIR_ORIGINAL; |
| 1044 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1045 | return 0; |
| 1046 | } |
| 1047 | |
Patrick McHardy | d0b0268 | 2010-02-10 15:38:33 +0100 | [diff] [blame] | 1048 | static const struct nla_policy help_nla_policy[CTA_HELP_MAX+1] = { |
Florian Westphal | 6d1fafc | 2012-11-22 01:32:46 +0000 | [diff] [blame] | 1049 | [CTA_HELP_NAME] = { .type = NLA_NUL_STRING, |
| 1050 | .len = NF_CT_HELPER_NAME_LEN - 1 }, |
Patrick McHardy | d0b0268 | 2010-02-10 15:38:33 +0100 | [diff] [blame] | 1051 | }; |
| 1052 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1053 | static inline int |
Pablo Neira Ayuso | ae243be | 2012-06-07 14:19:42 +0200 | [diff] [blame] | 1054 | ctnetlink_parse_help(const struct nlattr *attr, char **helper_name, |
| 1055 | struct nlattr **helpinfo) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1056 | { |
Daniel Borkmann | 130ffbc | 2013-06-12 17:54:51 +0200 | [diff] [blame] | 1057 | int err; |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1058 | struct nlattr *tb[CTA_HELP_MAX+1]; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1059 | |
Daniel Borkmann | 130ffbc | 2013-06-12 17:54:51 +0200 | [diff] [blame] | 1060 | err = nla_parse_nested(tb, CTA_HELP_MAX, attr, help_nla_policy); |
| 1061 | if (err < 0) |
| 1062 | return err; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1063 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1064 | if (!tb[CTA_HELP_NAME]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1065 | return -EINVAL; |
| 1066 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1067 | *helper_name = nla_data(tb[CTA_HELP_NAME]); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1068 | |
Pablo Neira Ayuso | ae243be | 2012-06-07 14:19:42 +0200 | [diff] [blame] | 1069 | if (tb[CTA_HELP_INFO]) |
| 1070 | *helpinfo = tb[CTA_HELP_INFO]; |
| 1071 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1072 | return 0; |
| 1073 | } |
| 1074 | |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 1075 | static const struct nla_policy ct_nla_policy[CTA_MAX+1] = { |
Patrick McHardy | d0b0268 | 2010-02-10 15:38:33 +0100 | [diff] [blame] | 1076 | [CTA_TUPLE_ORIG] = { .type = NLA_NESTED }, |
| 1077 | [CTA_TUPLE_REPLY] = { .type = NLA_NESTED }, |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 1078 | [CTA_STATUS] = { .type = NLA_U32 }, |
Patrick McHardy | d0b0268 | 2010-02-10 15:38:33 +0100 | [diff] [blame] | 1079 | [CTA_PROTOINFO] = { .type = NLA_NESTED }, |
| 1080 | [CTA_HELP] = { .type = NLA_NESTED }, |
| 1081 | [CTA_NAT_SRC] = { .type = NLA_NESTED }, |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 1082 | [CTA_TIMEOUT] = { .type = NLA_U32 }, |
| 1083 | [CTA_MARK] = { .type = NLA_U32 }, |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 1084 | [CTA_ID] = { .type = NLA_U32 }, |
Patrick McHardy | d0b0268 | 2010-02-10 15:38:33 +0100 | [diff] [blame] | 1085 | [CTA_NAT_DST] = { .type = NLA_NESTED }, |
| 1086 | [CTA_TUPLE_MASTER] = { .type = NLA_NESTED }, |
Florian Westphal | 6d1fafc | 2012-11-22 01:32:46 +0000 | [diff] [blame] | 1087 | [CTA_NAT_SEQ_ADJ_ORIG] = { .type = NLA_NESTED }, |
| 1088 | [CTA_NAT_SEQ_ADJ_REPLY] = { .type = NLA_NESTED }, |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 1089 | [CTA_ZONE] = { .type = NLA_U16 }, |
Pablo Neira Ayuso | 0f298a2 | 2012-02-24 14:41:50 +0000 | [diff] [blame] | 1090 | [CTA_MARK_MASK] = { .type = NLA_U32 }, |
Florian Westphal | 9b21f6a | 2013-01-11 06:30:46 +0000 | [diff] [blame] | 1091 | [CTA_LABELS] = { .type = NLA_BINARY, |
Florian Westphal | d2bf2f3 | 2014-02-18 15:25:32 +0100 | [diff] [blame] | 1092 | .len = NF_CT_LABELS_MAX_SIZE }, |
Florian Westphal | 9b21f6a | 2013-01-11 06:30:46 +0000 | [diff] [blame] | 1093 | [CTA_LABELS_MASK] = { .type = NLA_BINARY, |
Florian Westphal | d2bf2f3 | 2014-02-18 15:25:32 +0100 | [diff] [blame] | 1094 | .len = NF_CT_LABELS_MAX_SIZE }, |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1095 | }; |
| 1096 | |
Kristian Evensen | 866476f | 2014-12-24 09:57:10 +0100 | [diff] [blame] | 1097 | static int ctnetlink_flush_conntrack(struct net *net, |
| 1098 | const struct nlattr * const cda[], |
| 1099 | u32 portid, int report) |
| 1100 | { |
| 1101 | struct ctnetlink_filter *filter = NULL; |
| 1102 | |
| 1103 | if (cda[CTA_MARK] && cda[CTA_MARK_MASK]) { |
| 1104 | filter = ctnetlink_alloc_filter(cda); |
| 1105 | if (IS_ERR(filter)) |
| 1106 | return PTR_ERR(filter); |
| 1107 | } |
| 1108 | |
| 1109 | nf_ct_iterate_cleanup(net, ctnetlink_filter_match, filter, |
| 1110 | portid, report); |
| 1111 | kfree(filter); |
| 1112 | |
| 1113 | return 0; |
| 1114 | } |
| 1115 | |
Pablo Neira Ayuso | 7b8002a | 2015-12-15 18:41:56 +0100 | [diff] [blame] | 1116 | static int ctnetlink_del_conntrack(struct net *net, struct sock *ctnl, |
| 1117 | struct sk_buff *skb, |
| 1118 | const struct nlmsghdr *nlh, |
| 1119 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1120 | { |
| 1121 | struct nf_conntrack_tuple_hash *h; |
| 1122 | struct nf_conntrack_tuple tuple; |
| 1123 | struct nf_conn *ct; |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 1124 | struct nfgenmsg *nfmsg = nlmsg_data(nlh); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1125 | u_int8_t u3 = nfmsg->nfgen_family; |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 1126 | struct nf_conntrack_zone zone; |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 1127 | int err; |
| 1128 | |
| 1129 | err = ctnetlink_parse_zone(cda[CTA_ZONE], &zone); |
| 1130 | if (err < 0) |
| 1131 | return err; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1132 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1133 | if (cda[CTA_TUPLE_ORIG]) |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 1134 | err = ctnetlink_parse_tuple(cda, &tuple, CTA_TUPLE_ORIG, |
| 1135 | u3, &zone); |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1136 | else if (cda[CTA_TUPLE_REPLY]) |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 1137 | err = ctnetlink_parse_tuple(cda, &tuple, CTA_TUPLE_REPLY, |
| 1138 | u3, &zone); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1139 | else { |
Kristian Evensen | 866476f | 2014-12-24 09:57:10 +0100 | [diff] [blame] | 1140 | return ctnetlink_flush_conntrack(net, cda, |
| 1141 | NETLINK_CB(skb).portid, |
| 1142 | nlmsg_report(nlh)); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1143 | } |
| 1144 | |
| 1145 | if (err < 0) |
| 1146 | return err; |
| 1147 | |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 1148 | h = nf_conntrack_find_get(net, &zone, &tuple); |
Pablo Neira Ayuso | 9ea8cfd | 2006-10-12 14:09:16 -0700 | [diff] [blame] | 1149 | if (!h) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1150 | return -ENOENT; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1151 | |
| 1152 | ct = nf_ct_tuplehash_to_ctrack(h); |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 1153 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1154 | if (cda[CTA_ID]) { |
Patrick McHardy | 77236b6 | 2007-12-17 22:29:45 -0800 | [diff] [blame] | 1155 | u_int32_t id = ntohl(nla_get_be32(cda[CTA_ID])); |
Patrick McHardy | 7f85f91 | 2007-09-28 14:41:27 -0700 | [diff] [blame] | 1156 | if (id != (u32)(unsigned long)ct) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1157 | nf_ct_put(ct); |
| 1158 | return -ENOENT; |
| 1159 | } |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 1160 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1161 | |
Florian Westphal | 02982c2 | 2013-07-29 15:41:54 +0200 | [diff] [blame] | 1162 | if (del_timer(&ct->timeout)) |
| 1163 | nf_ct_delete(ct, NETLINK_CB(skb).portid, nlmsg_report(nlh)); |
| 1164 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1165 | nf_ct_put(ct); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1166 | |
| 1167 | return 0; |
| 1168 | } |
| 1169 | |
Pablo Neira Ayuso | 7b8002a | 2015-12-15 18:41:56 +0100 | [diff] [blame] | 1170 | static int ctnetlink_get_conntrack(struct net *net, struct sock *ctnl, |
| 1171 | struct sk_buff *skb, |
| 1172 | const struct nlmsghdr *nlh, |
| 1173 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1174 | { |
| 1175 | struct nf_conntrack_tuple_hash *h; |
| 1176 | struct nf_conntrack_tuple tuple; |
| 1177 | struct nf_conn *ct; |
| 1178 | struct sk_buff *skb2 = NULL; |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 1179 | struct nfgenmsg *nfmsg = nlmsg_data(nlh); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1180 | u_int8_t u3 = nfmsg->nfgen_family; |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 1181 | struct nf_conntrack_zone zone; |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 1182 | int err; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1183 | |
Pablo Neira Ayuso | 80d326f | 2012-02-24 14:30:15 +0000 | [diff] [blame] | 1184 | if (nlh->nlmsg_flags & NLM_F_DUMP) { |
| 1185 | struct netlink_dump_control c = { |
| 1186 | .dump = ctnetlink_dump_table, |
| 1187 | .done = ctnetlink_done, |
| 1188 | }; |
Kristian Evensen | 866476f | 2014-12-24 09:57:10 +0100 | [diff] [blame] | 1189 | |
Pablo Neira Ayuso | 0f298a2 | 2012-02-24 14:41:50 +0000 | [diff] [blame] | 1190 | if (cda[CTA_MARK] && cda[CTA_MARK_MASK]) { |
Kristian Evensen | 866476f | 2014-12-24 09:57:10 +0100 | [diff] [blame] | 1191 | struct ctnetlink_filter *filter; |
Pablo Neira Ayuso | 0f298a2 | 2012-02-24 14:41:50 +0000 | [diff] [blame] | 1192 | |
Kristian Evensen | 866476f | 2014-12-24 09:57:10 +0100 | [diff] [blame] | 1193 | filter = ctnetlink_alloc_filter(cda); |
| 1194 | if (IS_ERR(filter)) |
| 1195 | return PTR_ERR(filter); |
Pablo Neira Ayuso | 0f298a2 | 2012-02-24 14:41:50 +0000 | [diff] [blame] | 1196 | |
Pablo Neira Ayuso | 0f298a2 | 2012-02-24 14:41:50 +0000 | [diff] [blame] | 1197 | c.data = filter; |
| 1198 | } |
Pablo Neira Ayuso | 80d326f | 2012-02-24 14:30:15 +0000 | [diff] [blame] | 1199 | return netlink_dump_start(ctnl, skb, nlh, &c); |
| 1200 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1201 | |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 1202 | err = ctnetlink_parse_zone(cda[CTA_ZONE], &zone); |
| 1203 | if (err < 0) |
| 1204 | return err; |
| 1205 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1206 | if (cda[CTA_TUPLE_ORIG]) |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 1207 | err = ctnetlink_parse_tuple(cda, &tuple, CTA_TUPLE_ORIG, |
| 1208 | u3, &zone); |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1209 | else if (cda[CTA_TUPLE_REPLY]) |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 1210 | err = ctnetlink_parse_tuple(cda, &tuple, CTA_TUPLE_REPLY, |
| 1211 | u3, &zone); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1212 | else |
| 1213 | return -EINVAL; |
| 1214 | |
| 1215 | if (err < 0) |
| 1216 | return err; |
| 1217 | |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 1218 | h = nf_conntrack_find_get(net, &zone, &tuple); |
Pablo Neira Ayuso | 9ea8cfd | 2006-10-12 14:09:16 -0700 | [diff] [blame] | 1219 | if (!h) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1220 | return -ENOENT; |
Pablo Neira Ayuso | 9ea8cfd | 2006-10-12 14:09:16 -0700 | [diff] [blame] | 1221 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1222 | ct = nf_ct_tuplehash_to_ctrack(h); |
| 1223 | |
| 1224 | err = -ENOMEM; |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 1225 | skb2 = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| 1226 | if (skb2 == NULL) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1227 | nf_ct_put(ct); |
| 1228 | return -ENOMEM; |
| 1229 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1230 | |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 1231 | rcu_read_lock(); |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 1232 | 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] | 1233 | NFNL_MSG_TYPE(nlh->nlmsg_type), ct); |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 1234 | rcu_read_unlock(); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1235 | nf_ct_put(ct); |
| 1236 | if (err <= 0) |
| 1237 | goto free; |
| 1238 | |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 1239 | err = netlink_unicast(ctnl, skb2, NETLINK_CB(skb).portid, MSG_DONTWAIT); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1240 | if (err < 0) |
| 1241 | goto out; |
| 1242 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1243 | return 0; |
| 1244 | |
| 1245 | free: |
| 1246 | kfree_skb(skb2); |
| 1247 | out: |
Pablo Neira Ayuso | f31e8d49 | 2011-01-13 14:19:55 +0100 | [diff] [blame] | 1248 | /* this avoids a loop in nfnetlink. */ |
| 1249 | return err == -EAGAIN ? -ENOBUFS : err; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1250 | } |
| 1251 | |
Pablo Neira Ayuso | d871bef | 2012-11-27 14:49:42 +0100 | [diff] [blame] | 1252 | static int ctnetlink_done_list(struct netlink_callback *cb) |
| 1253 | { |
| 1254 | if (cb->args[1]) |
| 1255 | nf_ct_put((struct nf_conn *)cb->args[1]); |
| 1256 | return 0; |
| 1257 | } |
| 1258 | |
| 1259 | static int |
Jesper Dangaard Brouer | b7779d0 | 2014-03-03 14:45:20 +0100 | [diff] [blame] | 1260 | 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] | 1261 | { |
Florian Westphal | cd5f336 | 2014-06-08 11:41:23 +0200 | [diff] [blame] | 1262 | struct nf_conn *ct, *last; |
Pablo Neira Ayuso | d871bef | 2012-11-27 14:49:42 +0100 | [diff] [blame] | 1263 | struct nf_conntrack_tuple_hash *h; |
| 1264 | struct hlist_nulls_node *n; |
| 1265 | struct nfgenmsg *nfmsg = nlmsg_data(cb->nlh); |
| 1266 | u_int8_t l3proto = nfmsg->nfgen_family; |
| 1267 | int res; |
Jesper Dangaard Brouer | b7779d0 | 2014-03-03 14:45:20 +0100 | [diff] [blame] | 1268 | int cpu; |
| 1269 | struct hlist_nulls_head *list; |
| 1270 | struct net *net = sock_net(skb->sk); |
Pablo Neira Ayuso | d871bef | 2012-11-27 14:49:42 +0100 | [diff] [blame] | 1271 | |
| 1272 | if (cb->args[2]) |
| 1273 | return 0; |
| 1274 | |
Florian Westphal | cd5f336 | 2014-06-08 11:41:23 +0200 | [diff] [blame] | 1275 | last = (struct nf_conn *)cb->args[1]; |
| 1276 | |
Jesper Dangaard Brouer | b7779d0 | 2014-03-03 14:45:20 +0100 | [diff] [blame] | 1277 | for (cpu = cb->args[0]; cpu < nr_cpu_ids; cpu++) { |
| 1278 | struct ct_pcpu *pcpu; |
| 1279 | |
| 1280 | if (!cpu_possible(cpu)) |
Pablo Neira Ayuso | d871bef | 2012-11-27 14:49:42 +0100 | [diff] [blame] | 1281 | continue; |
Jesper Dangaard Brouer | b7779d0 | 2014-03-03 14:45:20 +0100 | [diff] [blame] | 1282 | |
| 1283 | pcpu = per_cpu_ptr(net->ct.pcpu_lists, cpu); |
| 1284 | spin_lock_bh(&pcpu->lock); |
Jesper Dangaard Brouer | b7779d0 | 2014-03-03 14:45:20 +0100 | [diff] [blame] | 1285 | list = dying ? &pcpu->dying : &pcpu->unconfirmed; |
| 1286 | restart: |
| 1287 | hlist_nulls_for_each_entry(h, n, list, hnnode) { |
| 1288 | ct = nf_ct_tuplehash_to_ctrack(h); |
| 1289 | if (l3proto && nf_ct_l3num(ct) != l3proto) |
Pablo Neira Ayuso | d871bef | 2012-11-27 14:49:42 +0100 | [diff] [blame] | 1290 | continue; |
Jesper Dangaard Brouer | b7779d0 | 2014-03-03 14:45:20 +0100 | [diff] [blame] | 1291 | if (cb->args[1]) { |
| 1292 | if (ct != last) |
| 1293 | continue; |
| 1294 | cb->args[1] = 0; |
| 1295 | } |
| 1296 | rcu_read_lock(); |
| 1297 | res = ctnetlink_fill_info(skb, NETLINK_CB(cb->skb).portid, |
| 1298 | cb->nlh->nlmsg_seq, |
| 1299 | NFNL_MSG_TYPE(cb->nlh->nlmsg_type), |
| 1300 | ct); |
| 1301 | rcu_read_unlock(); |
| 1302 | if (res < 0) { |
Florian Westphal | cd5f336 | 2014-06-08 11:41:23 +0200 | [diff] [blame] | 1303 | if (!atomic_inc_not_zero(&ct->ct_general.use)) |
| 1304 | continue; |
Pablo Neira Ayuso | 266155b | 2014-06-05 14:28:44 +0200 | [diff] [blame] | 1305 | cb->args[0] = cpu; |
Jesper Dangaard Brouer | b7779d0 | 2014-03-03 14:45:20 +0100 | [diff] [blame] | 1306 | cb->args[1] = (unsigned long)ct; |
| 1307 | spin_unlock_bh(&pcpu->lock); |
| 1308 | goto out; |
| 1309 | } |
| 1310 | } |
| 1311 | if (cb->args[1]) { |
Pablo Neira Ayuso | d871bef | 2012-11-27 14:49:42 +0100 | [diff] [blame] | 1312 | cb->args[1] = 0; |
Jesper Dangaard Brouer | b7779d0 | 2014-03-03 14:45:20 +0100 | [diff] [blame] | 1313 | goto restart; |
Pablo Neira Ayuso | 266155b | 2014-06-05 14:28:44 +0200 | [diff] [blame] | 1314 | } |
Jesper Dangaard Brouer | b7779d0 | 2014-03-03 14:45:20 +0100 | [diff] [blame] | 1315 | spin_unlock_bh(&pcpu->lock); |
Pablo Neira Ayuso | d871bef | 2012-11-27 14:49:42 +0100 | [diff] [blame] | 1316 | } |
Pablo Neira Ayuso | 266155b | 2014-06-05 14:28:44 +0200 | [diff] [blame] | 1317 | cb->args[2] = 1; |
Pablo Neira Ayuso | d871bef | 2012-11-27 14:49:42 +0100 | [diff] [blame] | 1318 | out: |
Pablo Neira Ayuso | d871bef | 2012-11-27 14:49:42 +0100 | [diff] [blame] | 1319 | if (last) |
| 1320 | nf_ct_put(last); |
| 1321 | |
| 1322 | return skb->len; |
| 1323 | } |
| 1324 | |
| 1325 | static int |
| 1326 | ctnetlink_dump_dying(struct sk_buff *skb, struct netlink_callback *cb) |
| 1327 | { |
Jesper Dangaard Brouer | b7779d0 | 2014-03-03 14:45:20 +0100 | [diff] [blame] | 1328 | return ctnetlink_dump_list(skb, cb, true); |
Pablo Neira Ayuso | d871bef | 2012-11-27 14:49:42 +0100 | [diff] [blame] | 1329 | } |
| 1330 | |
Pablo Neira Ayuso | 7b8002a | 2015-12-15 18:41:56 +0100 | [diff] [blame] | 1331 | static int ctnetlink_get_ct_dying(struct net *net, struct sock *ctnl, |
| 1332 | struct sk_buff *skb, |
| 1333 | const struct nlmsghdr *nlh, |
| 1334 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | d871bef | 2012-11-27 14:49:42 +0100 | [diff] [blame] | 1335 | { |
| 1336 | if (nlh->nlmsg_flags & NLM_F_DUMP) { |
| 1337 | struct netlink_dump_control c = { |
| 1338 | .dump = ctnetlink_dump_dying, |
| 1339 | .done = ctnetlink_done_list, |
| 1340 | }; |
| 1341 | return netlink_dump_start(ctnl, skb, nlh, &c); |
| 1342 | } |
| 1343 | |
| 1344 | return -EOPNOTSUPP; |
| 1345 | } |
| 1346 | |
| 1347 | static int |
| 1348 | ctnetlink_dump_unconfirmed(struct sk_buff *skb, struct netlink_callback *cb) |
| 1349 | { |
Jesper Dangaard Brouer | b7779d0 | 2014-03-03 14:45:20 +0100 | [diff] [blame] | 1350 | return ctnetlink_dump_list(skb, cb, false); |
Pablo Neira Ayuso | d871bef | 2012-11-27 14:49:42 +0100 | [diff] [blame] | 1351 | } |
| 1352 | |
Pablo Neira Ayuso | 7b8002a | 2015-12-15 18:41:56 +0100 | [diff] [blame] | 1353 | static int ctnetlink_get_ct_unconfirmed(struct net *net, struct sock *ctnl, |
| 1354 | struct sk_buff *skb, |
| 1355 | const struct nlmsghdr *nlh, |
| 1356 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | d871bef | 2012-11-27 14:49:42 +0100 | [diff] [blame] | 1357 | { |
| 1358 | if (nlh->nlmsg_flags & NLM_F_DUMP) { |
| 1359 | struct netlink_dump_control c = { |
| 1360 | .dump = ctnetlink_dump_unconfirmed, |
| 1361 | .done = ctnetlink_done_list, |
| 1362 | }; |
| 1363 | return netlink_dump_start(ctnl, skb, nlh, &c); |
| 1364 | } |
| 1365 | |
| 1366 | return -EOPNOTSUPP; |
| 1367 | } |
| 1368 | |
Pablo Neira Ayuso | 6767184 | 2008-10-20 03:34:27 -0700 | [diff] [blame] | 1369 | #ifdef CONFIG_NF_NAT_NEEDED |
Ilpo Järvinen | bb5cf80 | 2008-01-05 23:11:31 -0800 | [diff] [blame] | 1370 | static int |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 1371 | ctnetlink_parse_nat_setup(struct nf_conn *ct, |
| 1372 | enum nf_nat_manip_type manip, |
Patrick McHardy | 3993832 | 2009-08-25 16:07:58 +0200 | [diff] [blame] | 1373 | const struct nlattr *attr) |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 1374 | { |
| 1375 | typeof(nfnetlink_parse_nat_setup_hook) parse_nat_setup; |
Patrick McHardy | c7232c9 | 2012-08-26 19:14:06 +0200 | [diff] [blame] | 1376 | int err; |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 1377 | |
| 1378 | parse_nat_setup = rcu_dereference(nfnetlink_parse_nat_setup_hook); |
| 1379 | if (!parse_nat_setup) { |
Johannes Berg | 95a5afc | 2008-10-16 15:24:51 -0700 | [diff] [blame] | 1380 | #ifdef CONFIG_MODULES |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 1381 | rcu_read_unlock(); |
Pablo Neira Ayuso | c14b78e | 2013-02-05 01:50:26 +0100 | [diff] [blame] | 1382 | nfnl_unlock(NFNL_SUBSYS_CTNETLINK); |
Patrick McHardy | c7232c9 | 2012-08-26 19:14:06 +0200 | [diff] [blame] | 1383 | if (request_module("nf-nat") < 0) { |
Pablo Neira Ayuso | c14b78e | 2013-02-05 01:50:26 +0100 | [diff] [blame] | 1384 | nfnl_lock(NFNL_SUBSYS_CTNETLINK); |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 1385 | rcu_read_lock(); |
| 1386 | return -EOPNOTSUPP; |
| 1387 | } |
Pablo Neira Ayuso | c14b78e | 2013-02-05 01:50:26 +0100 | [diff] [blame] | 1388 | nfnl_lock(NFNL_SUBSYS_CTNETLINK); |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 1389 | rcu_read_lock(); |
| 1390 | if (nfnetlink_parse_nat_setup_hook) |
| 1391 | return -EAGAIN; |
| 1392 | #endif |
| 1393 | return -EOPNOTSUPP; |
| 1394 | } |
| 1395 | |
Patrick McHardy | c7232c9 | 2012-08-26 19:14:06 +0200 | [diff] [blame] | 1396 | err = parse_nat_setup(ct, manip, attr); |
| 1397 | if (err == -EAGAIN) { |
| 1398 | #ifdef CONFIG_MODULES |
| 1399 | rcu_read_unlock(); |
Pablo Neira Ayuso | c14b78e | 2013-02-05 01:50:26 +0100 | [diff] [blame] | 1400 | nfnl_unlock(NFNL_SUBSYS_CTNETLINK); |
Patrick McHardy | c7232c9 | 2012-08-26 19:14:06 +0200 | [diff] [blame] | 1401 | if (request_module("nf-nat-%u", nf_ct_l3num(ct)) < 0) { |
Pablo Neira Ayuso | c14b78e | 2013-02-05 01:50:26 +0100 | [diff] [blame] | 1402 | nfnl_lock(NFNL_SUBSYS_CTNETLINK); |
Patrick McHardy | c7232c9 | 2012-08-26 19:14:06 +0200 | [diff] [blame] | 1403 | rcu_read_lock(); |
| 1404 | return -EOPNOTSUPP; |
| 1405 | } |
Pablo Neira Ayuso | c14b78e | 2013-02-05 01:50:26 +0100 | [diff] [blame] | 1406 | nfnl_lock(NFNL_SUBSYS_CTNETLINK); |
Patrick McHardy | c7232c9 | 2012-08-26 19:14:06 +0200 | [diff] [blame] | 1407 | rcu_read_lock(); |
| 1408 | #else |
| 1409 | err = -EOPNOTSUPP; |
| 1410 | #endif |
| 1411 | } |
| 1412 | return err; |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 1413 | } |
Pablo Neira Ayuso | 6767184 | 2008-10-20 03:34:27 -0700 | [diff] [blame] | 1414 | #endif |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 1415 | |
| 1416 | static int |
Patrick McHardy | 3993832 | 2009-08-25 16:07:58 +0200 | [diff] [blame] | 1417 | 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] | 1418 | { |
| 1419 | unsigned long d; |
Patrick McHardy | 77236b6 | 2007-12-17 22:29:45 -0800 | [diff] [blame] | 1420 | unsigned int status = ntohl(nla_get_be32(cda[CTA_STATUS])); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1421 | d = ct->status ^ status; |
| 1422 | |
| 1423 | if (d & (IPS_EXPECTED|IPS_CONFIRMED|IPS_DYING)) |
| 1424 | /* unchangeable */ |
Pablo Neira Ayuso | 0adf9d6 | 2008-06-09 15:56:20 -0700 | [diff] [blame] | 1425 | return -EBUSY; |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 1426 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1427 | if (d & IPS_SEEN_REPLY && !(status & IPS_SEEN_REPLY)) |
| 1428 | /* SEEN_REPLY bit can only be set */ |
Pablo Neira Ayuso | 0adf9d6 | 2008-06-09 15:56:20 -0700 | [diff] [blame] | 1429 | return -EBUSY; |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 1430 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1431 | if (d & IPS_ASSURED && !(status & IPS_ASSURED)) |
| 1432 | /* ASSURED bit can only be set */ |
Pablo Neira Ayuso | 0adf9d6 | 2008-06-09 15:56:20 -0700 | [diff] [blame] | 1433 | return -EBUSY; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1434 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1435 | /* Be careful here, modifying NAT bits can screw up things, |
| 1436 | * 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] | 1437 | * nf_nat_range. */ |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1438 | ct->status |= status & ~(IPS_NAT_DONE_MASK | IPS_NAT_MASK); |
| 1439 | return 0; |
| 1440 | } |
| 1441 | |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 1442 | static int |
Pablo Neira Ayuso | 0eba801 | 2014-02-16 12:15:43 +0100 | [diff] [blame] | 1443 | 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] | 1444 | { |
| 1445 | #ifdef CONFIG_NF_NAT_NEEDED |
| 1446 | int ret; |
| 1447 | |
Florian Westphal | fe337ac | 2014-04-28 21:07:31 +0200 | [diff] [blame] | 1448 | if (!cda[CTA_NAT_DST] && !cda[CTA_NAT_SRC]) |
| 1449 | return 0; |
| 1450 | |
Pablo Neira Ayuso | 0eba801 | 2014-02-16 12:15:43 +0100 | [diff] [blame] | 1451 | ret = ctnetlink_parse_nat_setup(ct, NF_NAT_MANIP_DST, |
| 1452 | cda[CTA_NAT_DST]); |
| 1453 | if (ret < 0) |
| 1454 | return ret; |
| 1455 | |
| 1456 | ret = ctnetlink_parse_nat_setup(ct, NF_NAT_MANIP_SRC, |
| 1457 | cda[CTA_NAT_SRC]); |
| 1458 | return ret; |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 1459 | #else |
Pablo Neira Ayuso | 0eba801 | 2014-02-16 12:15:43 +0100 | [diff] [blame] | 1460 | if (!cda[CTA_NAT_DST] && !cda[CTA_NAT_SRC]) |
| 1461 | return 0; |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 1462 | return -EOPNOTSUPP; |
| 1463 | #endif |
| 1464 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1465 | |
| 1466 | static inline int |
Patrick McHardy | 3993832 | 2009-08-25 16:07:58 +0200 | [diff] [blame] | 1467 | ctnetlink_change_helper(struct nf_conn *ct, const struct nlattr * const cda[]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1468 | { |
| 1469 | struct nf_conntrack_helper *helper; |
Harald Welte | dc808fe | 2006-03-20 17:56:32 -0800 | [diff] [blame] | 1470 | struct nf_conn_help *help = nfct_help(ct); |
Pablo Neira Ayuso | 29fe1b4 | 2009-04-22 02:26:37 -0700 | [diff] [blame] | 1471 | char *helpname = NULL; |
Pablo Neira Ayuso | ae243be | 2012-06-07 14:19:42 +0200 | [diff] [blame] | 1472 | struct nlattr *helpinfo = NULL; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1473 | int err; |
| 1474 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1475 | /* don't change helper of sibling connections */ |
| 1476 | if (ct->master) |
Pablo Neira Ayuso | 0adf9d6 | 2008-06-09 15:56:20 -0700 | [diff] [blame] | 1477 | return -EBUSY; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1478 | |
Pablo Neira Ayuso | ae243be | 2012-06-07 14:19:42 +0200 | [diff] [blame] | 1479 | err = ctnetlink_parse_help(cda[CTA_HELP], &helpname, &helpinfo); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1480 | if (err < 0) |
| 1481 | return err; |
| 1482 | |
Yasuyuki Kozakai | df293bb | 2007-05-10 14:15:58 -0700 | [diff] [blame] | 1483 | if (!strcmp(helpname, "")) { |
| 1484 | if (help && help->helper) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1485 | /* we had a helper before ... */ |
| 1486 | nf_ct_remove_expectations(ct); |
Stephen Hemminger | a9b3cd7 | 2011-08-01 16:19:00 +0000 | [diff] [blame] | 1487 | RCU_INIT_POINTER(help->helper, NULL); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1488 | } |
Yasuyuki Kozakai | df293bb | 2007-05-10 14:15:58 -0700 | [diff] [blame] | 1489 | |
| 1490 | return 0; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1491 | } |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 1492 | |
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 == NULL) { |
| 1496 | #ifdef CONFIG_MODULES |
Jesper Dangaard Brouer | ca7433d | 2014-03-03 14:46:01 +0100 | [diff] [blame] | 1497 | spin_unlock_bh(&nf_conntrack_expect_lock); |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1498 | |
| 1499 | if (request_module("nfct-helper-%s", helpname) < 0) { |
Jesper Dangaard Brouer | ca7433d | 2014-03-03 14:46:01 +0100 | [diff] [blame] | 1500 | spin_lock_bh(&nf_conntrack_expect_lock); |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1501 | return -EOPNOTSUPP; |
| 1502 | } |
| 1503 | |
Jesper Dangaard Brouer | ca7433d | 2014-03-03 14:46:01 +0100 | [diff] [blame] | 1504 | spin_lock_bh(&nf_conntrack_expect_lock); |
Patrick McHardy | 794e687 | 2010-02-03 13:41:29 +0100 | [diff] [blame] | 1505 | helper = __nf_conntrack_helper_find(helpname, nf_ct_l3num(ct), |
| 1506 | nf_ct_protonum(ct)); |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1507 | if (helper) |
| 1508 | return -EAGAIN; |
| 1509 | #endif |
Pablo Neira Ayuso | 0adf9d6 | 2008-06-09 15:56:20 -0700 | [diff] [blame] | 1510 | return -EOPNOTSUPP; |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1511 | } |
Yasuyuki Kozakai | df293bb | 2007-05-10 14:15:58 -0700 | [diff] [blame] | 1512 | |
Yasuyuki Kozakai | ceceae1 | 2007-07-07 22:23:42 -0700 | [diff] [blame] | 1513 | if (help) { |
Pablo Neira Ayuso | ae243be | 2012-06-07 14:19:42 +0200 | [diff] [blame] | 1514 | if (help->helper == helper) { |
| 1515 | /* update private helper data if allowed. */ |
Pablo Neira Ayuso | 7be54ca | 2012-09-21 16:52:08 +0200 | [diff] [blame] | 1516 | if (helper->from_nlattr) |
Pablo Neira Ayuso | ae243be | 2012-06-07 14:19:42 +0200 | [diff] [blame] | 1517 | helper->from_nlattr(helpinfo, ct); |
Yasuyuki Kozakai | ceceae1 | 2007-07-07 22:23:42 -0700 | [diff] [blame] | 1518 | return 0; |
Pablo Neira Ayuso | fd7462d | 2012-06-18 17:29:53 +0200 | [diff] [blame] | 1519 | } else |
Yasuyuki Kozakai | ceceae1 | 2007-07-07 22:23:42 -0700 | [diff] [blame] | 1520 | return -EBUSY; |
Yasuyuki Kozakai | ceceae1 | 2007-07-07 22:23:42 -0700 | [diff] [blame] | 1521 | } |
Yasuyuki Kozakai | df293bb | 2007-05-10 14:15:58 -0700 | [diff] [blame] | 1522 | |
Pablo Neira Ayuso | fd7462d | 2012-06-18 17:29:53 +0200 | [diff] [blame] | 1523 | /* we cannot set a helper for an existing conntrack */ |
| 1524 | return -EOPNOTSUPP; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1525 | } |
| 1526 | |
| 1527 | static inline int |
Patrick McHardy | 3993832 | 2009-08-25 16:07:58 +0200 | [diff] [blame] | 1528 | ctnetlink_change_timeout(struct nf_conn *ct, const struct nlattr * const cda[]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1529 | { |
Patrick McHardy | 77236b6 | 2007-12-17 22:29:45 -0800 | [diff] [blame] | 1530 | u_int32_t timeout = ntohl(nla_get_be32(cda[CTA_TIMEOUT])); |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 1531 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1532 | if (!del_timer(&ct->timeout)) |
| 1533 | return -ETIME; |
| 1534 | |
| 1535 | ct->timeout.expires = jiffies + timeout * HZ; |
| 1536 | add_timer(&ct->timeout); |
| 1537 | |
| 1538 | return 0; |
| 1539 | } |
| 1540 | |
Patrick McHardy | d0b0268 | 2010-02-10 15:38:33 +0100 | [diff] [blame] | 1541 | static const struct nla_policy protoinfo_policy[CTA_PROTOINFO_MAX+1] = { |
| 1542 | [CTA_PROTOINFO_TCP] = { .type = NLA_NESTED }, |
| 1543 | [CTA_PROTOINFO_DCCP] = { .type = NLA_NESTED }, |
| 1544 | [CTA_PROTOINFO_SCTP] = { .type = NLA_NESTED }, |
| 1545 | }; |
| 1546 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1547 | static inline int |
Patrick McHardy | 3993832 | 2009-08-25 16:07:58 +0200 | [diff] [blame] | 1548 | ctnetlink_change_protoinfo(struct nf_conn *ct, const struct nlattr * const cda[]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1549 | { |
Patrick McHardy | 3993832 | 2009-08-25 16:07:58 +0200 | [diff] [blame] | 1550 | const struct nlattr *attr = cda[CTA_PROTOINFO]; |
| 1551 | struct nlattr *tb[CTA_PROTOINFO_MAX+1]; |
Martin Josefsson | 605dcad | 2006-11-29 02:35:06 +0100 | [diff] [blame] | 1552 | struct nf_conntrack_l4proto *l4proto; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1553 | int err = 0; |
| 1554 | |
Daniel Borkmann | 130ffbc | 2013-06-12 17:54:51 +0200 | [diff] [blame] | 1555 | err = nla_parse_nested(tb, CTA_PROTOINFO_MAX, attr, protoinfo_policy); |
| 1556 | if (err < 0) |
| 1557 | return err; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1558 | |
Florian Westphal | cd91566 | 2009-03-18 17:28:37 +0100 | [diff] [blame] | 1559 | rcu_read_lock(); |
| 1560 | 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] | 1561 | if (l4proto->from_nlattr) |
| 1562 | err = l4proto->from_nlattr(tb, ct); |
Florian Westphal | cd91566 | 2009-03-18 17:28:37 +0100 | [diff] [blame] | 1563 | rcu_read_unlock(); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1564 | |
| 1565 | return err; |
| 1566 | } |
| 1567 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1568 | static const struct nla_policy seqadj_policy[CTA_SEQADJ_MAX+1] = { |
| 1569 | [CTA_SEQADJ_CORRECTION_POS] = { .type = NLA_U32 }, |
| 1570 | [CTA_SEQADJ_OFFSET_BEFORE] = { .type = NLA_U32 }, |
| 1571 | [CTA_SEQADJ_OFFSET_AFTER] = { .type = NLA_U32 }, |
Patrick McHardy | d0b0268 | 2010-02-10 15:38:33 +0100 | [diff] [blame] | 1572 | }; |
| 1573 | |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1574 | static inline int |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1575 | change_seq_adj(struct nf_ct_seqadj *seq, const struct nlattr * const attr) |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1576 | { |
Daniel Borkmann | 130ffbc | 2013-06-12 17:54:51 +0200 | [diff] [blame] | 1577 | int err; |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1578 | struct nlattr *cda[CTA_SEQADJ_MAX+1]; |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1579 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1580 | err = nla_parse_nested(cda, CTA_SEQADJ_MAX, attr, seqadj_policy); |
Daniel Borkmann | 130ffbc | 2013-06-12 17:54:51 +0200 | [diff] [blame] | 1581 | if (err < 0) |
| 1582 | return err; |
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_CORRECTION_POS]) |
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->correction_pos = |
| 1588 | ntohl(nla_get_be32(cda[CTA_SEQADJ_CORRECTION_POS])); |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1589 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1590 | if (!cda[CTA_SEQADJ_OFFSET_BEFORE]) |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1591 | return -EINVAL; |
| 1592 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1593 | seq->offset_before = |
| 1594 | ntohl(nla_get_be32(cda[CTA_SEQADJ_OFFSET_BEFORE])); |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1595 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1596 | if (!cda[CTA_SEQADJ_OFFSET_AFTER]) |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1597 | return -EINVAL; |
| 1598 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1599 | seq->offset_after = |
| 1600 | ntohl(nla_get_be32(cda[CTA_SEQADJ_OFFSET_AFTER])); |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1601 | |
| 1602 | return 0; |
| 1603 | } |
| 1604 | |
| 1605 | static int |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1606 | ctnetlink_change_seq_adj(struct nf_conn *ct, |
| 1607 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1608 | { |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1609 | struct nf_conn_seqadj *seqadj = nfct_seqadj(ct); |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1610 | int ret = 0; |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1611 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1612 | if (!seqadj) |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1613 | return 0; |
| 1614 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1615 | if (cda[CTA_SEQ_ADJ_ORIG]) { |
| 1616 | ret = change_seq_adj(&seqadj->seq[IP_CT_DIR_ORIGINAL], |
| 1617 | cda[CTA_SEQ_ADJ_ORIG]); |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1618 | if (ret < 0) |
| 1619 | return ret; |
| 1620 | |
| 1621 | ct->status |= IPS_SEQ_ADJUST; |
| 1622 | } |
| 1623 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1624 | if (cda[CTA_SEQ_ADJ_REPLY]) { |
| 1625 | ret = change_seq_adj(&seqadj->seq[IP_CT_DIR_REPLY], |
| 1626 | cda[CTA_SEQ_ADJ_REPLY]); |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1627 | if (ret < 0) |
| 1628 | return ret; |
| 1629 | |
| 1630 | ct->status |= IPS_SEQ_ADJUST; |
| 1631 | } |
| 1632 | |
| 1633 | return 0; |
| 1634 | } |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1635 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1636 | static int |
Florian Westphal | 9b21f6a | 2013-01-11 06:30:46 +0000 | [diff] [blame] | 1637 | ctnetlink_attach_labels(struct nf_conn *ct, const struct nlattr * const cda[]) |
| 1638 | { |
| 1639 | #ifdef CONFIG_NF_CONNTRACK_LABELS |
| 1640 | size_t len = nla_len(cda[CTA_LABELS]); |
| 1641 | const void *mask = cda[CTA_LABELS_MASK]; |
| 1642 | |
| 1643 | if (len & (sizeof(u32)-1)) /* must be multiple of u32 */ |
| 1644 | return -EINVAL; |
| 1645 | |
| 1646 | if (mask) { |
| 1647 | if (nla_len(cda[CTA_LABELS_MASK]) == 0 || |
| 1648 | nla_len(cda[CTA_LABELS_MASK]) != len) |
| 1649 | return -EINVAL; |
| 1650 | mask = nla_data(cda[CTA_LABELS_MASK]); |
| 1651 | } |
| 1652 | |
| 1653 | len /= sizeof(u32); |
| 1654 | |
| 1655 | return nf_connlabels_replace(ct, nla_data(cda[CTA_LABELS]), mask, len); |
| 1656 | #else |
| 1657 | return -EOPNOTSUPP; |
| 1658 | #endif |
| 1659 | } |
| 1660 | |
| 1661 | static int |
Patrick McHardy | 3993832 | 2009-08-25 16:07:58 +0200 | [diff] [blame] | 1662 | ctnetlink_change_conntrack(struct nf_conn *ct, |
| 1663 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1664 | { |
| 1665 | int err; |
| 1666 | |
Pablo Neira Ayuso | e098360 | 2009-03-16 15:27:22 +0100 | [diff] [blame] | 1667 | /* only allow NAT changes and master assignation for new conntracks */ |
| 1668 | if (cda[CTA_NAT_SRC] || cda[CTA_NAT_DST] || cda[CTA_TUPLE_MASTER]) |
| 1669 | return -EOPNOTSUPP; |
| 1670 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1671 | if (cda[CTA_HELP]) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1672 | err = ctnetlink_change_helper(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_TIMEOUT]) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1678 | err = ctnetlink_change_timeout(ct, cda); |
| 1679 | if (err < 0) |
| 1680 | return err; |
| 1681 | } |
| 1682 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1683 | if (cda[CTA_STATUS]) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1684 | err = ctnetlink_change_status(ct, cda); |
| 1685 | if (err < 0) |
| 1686 | return err; |
| 1687 | } |
| 1688 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1689 | if (cda[CTA_PROTOINFO]) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1690 | err = ctnetlink_change_protoinfo(ct, cda); |
| 1691 | if (err < 0) |
| 1692 | return err; |
| 1693 | } |
| 1694 | |
Martin Josefsson | bcd1e83 | 2006-04-01 02:23:21 -0800 | [diff] [blame] | 1695 | #if defined(CONFIG_NF_CONNTRACK_MARK) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1696 | if (cda[CTA_MARK]) |
Patrick McHardy | 77236b6 | 2007-12-17 22:29:45 -0800 | [diff] [blame] | 1697 | ct->mark = ntohl(nla_get_be32(cda[CTA_MARK])); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1698 | #endif |
| 1699 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1700 | if (cda[CTA_SEQ_ADJ_ORIG] || cda[CTA_SEQ_ADJ_REPLY]) { |
| 1701 | err = ctnetlink_change_seq_adj(ct, cda); |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1702 | if (err < 0) |
| 1703 | return err; |
| 1704 | } |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1705 | |
Florian Westphal | 9b21f6a | 2013-01-11 06:30:46 +0000 | [diff] [blame] | 1706 | if (cda[CTA_LABELS]) { |
| 1707 | err = ctnetlink_attach_labels(ct, cda); |
| 1708 | if (err < 0) |
| 1709 | return err; |
| 1710 | } |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1711 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1712 | return 0; |
| 1713 | } |
| 1714 | |
Pablo Neira Ayuso | f0a3c08 | 2009-03-16 15:28:09 +0100 | [diff] [blame] | 1715 | static struct nf_conn * |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 1716 | ctnetlink_create_conntrack(struct net *net, |
| 1717 | const struct nf_conntrack_zone *zone, |
Alexey Dobriyan | 9592a5c | 2010-01-13 16:04:18 +0100 | [diff] [blame] | 1718 | const struct nlattr * const cda[], |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1719 | struct nf_conntrack_tuple *otuple, |
Pablo Neira Ayuso | 5faa1f4 | 2007-09-28 14:43:53 -0700 | [diff] [blame] | 1720 | struct nf_conntrack_tuple *rtuple, |
Pablo Neira Ayuso | 7ec4749 | 2009-03-16 15:25:46 +0100 | [diff] [blame] | 1721 | u8 u3) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1722 | { |
| 1723 | struct nf_conn *ct; |
| 1724 | int err = -EINVAL; |
Yasuyuki Kozakai | ceceae1 | 2007-07-07 22:23:42 -0700 | [diff] [blame] | 1725 | struct nf_conntrack_helper *helper; |
Pablo Neira Ayuso | 315c34d | 2011-04-21 10:55:07 +0200 | [diff] [blame] | 1726 | struct nf_conn_tstamp *tstamp; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1727 | |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 1728 | ct = nf_conntrack_alloc(net, zone, otuple, rtuple, GFP_ATOMIC); |
Julia Lawall | cd7fcbf | 2009-01-12 00:06:08 +0000 | [diff] [blame] | 1729 | if (IS_ERR(ct)) |
Pablo Neira Ayuso | f0a3c08 | 2009-03-16 15:28:09 +0100 | [diff] [blame] | 1730 | return ERR_PTR(-ENOMEM); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1731 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1732 | if (!cda[CTA_TIMEOUT]) |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1733 | goto err1; |
Patrick McHardy | 77236b6 | 2007-12-17 22:29:45 -0800 | [diff] [blame] | 1734 | ct->timeout.expires = ntohl(nla_get_be32(cda[CTA_TIMEOUT])); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1735 | |
| 1736 | ct->timeout.expires = jiffies + ct->timeout.expires * HZ; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1737 | |
Patrick McHardy | 58a3c9b | 2008-01-31 04:36:54 -0800 | [diff] [blame] | 1738 | rcu_read_lock(); |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1739 | if (cda[CTA_HELP]) { |
Pablo Neira Ayuso | 29fe1b4 | 2009-04-22 02:26:37 -0700 | [diff] [blame] | 1740 | char *helpname = NULL; |
Pablo Neira Ayuso | ae243be | 2012-06-07 14:19:42 +0200 | [diff] [blame] | 1741 | struct nlattr *helpinfo = NULL; |
| 1742 | |
| 1743 | err = ctnetlink_parse_help(cda[CTA_HELP], &helpname, &helpinfo); |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1744 | if (err < 0) |
| 1745 | goto err2; |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1746 | |
Patrick McHardy | 794e687 | 2010-02-03 13:41:29 +0100 | [diff] [blame] | 1747 | helper = __nf_conntrack_helper_find(helpname, 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 == NULL) { |
| 1750 | rcu_read_unlock(); |
| 1751 | #ifdef CONFIG_MODULES |
| 1752 | if (request_module("nfct-helper-%s", helpname) < 0) { |
| 1753 | err = -EOPNOTSUPP; |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1754 | goto err1; |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1755 | } |
| 1756 | |
| 1757 | rcu_read_lock(); |
Patrick McHardy | 794e687 | 2010-02-03 13:41:29 +0100 | [diff] [blame] | 1758 | helper = __nf_conntrack_helper_find(helpname, |
| 1759 | nf_ct_l3num(ct), |
| 1760 | nf_ct_protonum(ct)); |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1761 | if (helper) { |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1762 | err = -EAGAIN; |
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 | } |
| 1765 | rcu_read_unlock(); |
| 1766 | #endif |
| 1767 | err = -EOPNOTSUPP; |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1768 | goto err1; |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1769 | } else { |
| 1770 | struct nf_conn_help *help; |
| 1771 | |
Pablo Neira Ayuso | 1afc567 | 2012-06-07 12:11:50 +0200 | [diff] [blame] | 1772 | help = nf_ct_helper_ext_add(ct, helper, GFP_ATOMIC); |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1773 | if (help == NULL) { |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1774 | err = -ENOMEM; |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1775 | goto err2; |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1776 | } |
Pablo Neira Ayuso | ae243be | 2012-06-07 14:19:42 +0200 | [diff] [blame] | 1777 | /* set private helper data if allowed. */ |
Pablo Neira Ayuso | 7be54ca | 2012-09-21 16:52:08 +0200 | [diff] [blame] | 1778 | if (helper->from_nlattr) |
Pablo Neira Ayuso | ae243be | 2012-06-07 14:19:42 +0200 | [diff] [blame] | 1779 | helper->from_nlattr(helpinfo, ct); |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1780 | |
| 1781 | /* not in hash table yet so not strictly necessary */ |
Stephen Hemminger | a9b3cd7 | 2011-08-01 16:19:00 +0000 | [diff] [blame] | 1782 | RCU_INIT_POINTER(help->helper, helper); |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1783 | } |
| 1784 | } else { |
| 1785 | /* try an implicit helper assignation */ |
Patrick McHardy | b2a15a6 | 2010-02-03 14:13:03 +0100 | [diff] [blame] | 1786 | err = __nf_ct_try_assign_helper(ct, NULL, GFP_ATOMIC); |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1787 | if (err < 0) |
| 1788 | goto err2; |
Patrick McHarrdy | 3c158f7 | 2007-06-05 12:55:27 -0700 | [diff] [blame] | 1789 | } |
Yasuyuki Kozakai | dafc741 | 2006-11-27 10:25:32 -0800 | [diff] [blame] | 1790 | |
Pablo Neira Ayuso | 0eba801 | 2014-02-16 12:15:43 +0100 | [diff] [blame] | 1791 | err = ctnetlink_setup_nat(ct, cda); |
| 1792 | if (err < 0) |
| 1793 | goto err2; |
Pablo Neira Ayuso | 1575e7e | 2008-08-18 21:30:55 -0700 | [diff] [blame] | 1794 | |
Pablo Neira Ayuso | a88e22a | 2010-02-19 14:24:39 +0100 | [diff] [blame] | 1795 | nf_ct_acct_ext_add(ct, GFP_ATOMIC); |
Pablo Neira Ayuso | a992ca2 | 2011-01-19 16:00:07 +0100 | [diff] [blame] | 1796 | nf_ct_tstamp_ext_add(ct, GFP_ATOMIC); |
Pablo Neira Ayuso | a88e22a | 2010-02-19 14:24:39 +0100 | [diff] [blame] | 1797 | nf_ct_ecache_ext_add(ct, 0, 0, GFP_ATOMIC); |
Florian Westphal | c539f01 | 2013-01-11 06:30:44 +0000 | [diff] [blame] | 1798 | nf_ct_labels_ext_add(ct); |
| 1799 | |
Pablo Neira Ayuso | a88e22a | 2010-02-19 14:24:39 +0100 | [diff] [blame] | 1800 | /* we must add conntrack extensions before confirmation. */ |
| 1801 | ct->status |= IPS_CONFIRMED; |
| 1802 | |
| 1803 | if (cda[CTA_STATUS]) { |
| 1804 | err = ctnetlink_change_status(ct, cda); |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1805 | if (err < 0) |
| 1806 | goto err2; |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 1807 | } |
| 1808 | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1809 | if (cda[CTA_SEQ_ADJ_ORIG] || cda[CTA_SEQ_ADJ_REPLY]) { |
| 1810 | err = ctnetlink_change_seq_adj(ct, cda); |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1811 | if (err < 0) |
| 1812 | goto err2; |
Pablo Neira Ayuso | c969aa7 | 2009-02-09 14:33:57 -0800 | [diff] [blame] | 1813 | } |
Pablo Neira Ayuso | c969aa7 | 2009-02-09 14:33:57 -0800 | [diff] [blame] | 1814 | |
Changli Gao | e5fc9e7 | 2010-11-12 17:33:17 +0100 | [diff] [blame] | 1815 | memset(&ct->proto, 0, sizeof(ct->proto)); |
Pablo Neira Ayuso | 1575e7e | 2008-08-18 21:30:55 -0700 | [diff] [blame] | 1816 | if (cda[CTA_PROTOINFO]) { |
| 1817 | err = ctnetlink_change_protoinfo(ct, cda); |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1818 | if (err < 0) |
| 1819 | goto err2; |
Pablo Neira Ayuso | 1575e7e | 2008-08-18 21:30:55 -0700 | [diff] [blame] | 1820 | } |
| 1821 | |
Pablo Neira Ayuso | 1575e7e | 2008-08-18 21:30:55 -0700 | [diff] [blame] | 1822 | #if defined(CONFIG_NF_CONNTRACK_MARK) |
| 1823 | if (cda[CTA_MARK]) |
| 1824 | ct->mark = ntohl(nla_get_be32(cda[CTA_MARK])); |
| 1825 | #endif |
| 1826 | |
Pablo Neira Ayuso | 5faa1f4 | 2007-09-28 14:43:53 -0700 | [diff] [blame] | 1827 | /* setup master conntrack: this is a confirmed expectation */ |
Pablo Neira Ayuso | 7ec4749 | 2009-03-16 15:25:46 +0100 | [diff] [blame] | 1828 | if (cda[CTA_TUPLE_MASTER]) { |
| 1829 | struct nf_conntrack_tuple master; |
| 1830 | struct nf_conntrack_tuple_hash *master_h; |
| 1831 | struct nf_conn *master_ct; |
| 1832 | |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 1833 | err = ctnetlink_parse_tuple(cda, &master, CTA_TUPLE_MASTER, |
| 1834 | u3, NULL); |
Pablo Neira Ayuso | 7ec4749 | 2009-03-16 15:25:46 +0100 | [diff] [blame] | 1835 | if (err < 0) |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1836 | goto err2; |
Pablo Neira Ayuso | 7ec4749 | 2009-03-16 15:25:46 +0100 | [diff] [blame] | 1837 | |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 1838 | master_h = nf_conntrack_find_get(net, zone, &master); |
Pablo Neira Ayuso | 7ec4749 | 2009-03-16 15:25:46 +0100 | [diff] [blame] | 1839 | if (master_h == NULL) { |
| 1840 | err = -ENOENT; |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1841 | goto err2; |
Pablo Neira Ayuso | 7ec4749 | 2009-03-16 15:25:46 +0100 | [diff] [blame] | 1842 | } |
| 1843 | master_ct = nf_ct_tuplehash_to_ctrack(master_h); |
Pablo Neira Ayuso | f2a8900 | 2007-12-12 10:34:29 -0800 | [diff] [blame] | 1844 | __set_bit(IPS_EXPECTED_BIT, &ct->status); |
Pablo Neira Ayuso | 5faa1f4 | 2007-09-28 14:43:53 -0700 | [diff] [blame] | 1845 | ct->master = master_ct; |
Pablo Neira Ayuso | f2a8900 | 2007-12-12 10:34:29 -0800 | [diff] [blame] | 1846 | } |
Pablo Neira Ayuso | 315c34d | 2011-04-21 10:55:07 +0200 | [diff] [blame] | 1847 | tstamp = nf_conn_tstamp_find(ct); |
| 1848 | if (tstamp) |
Eric Dumazet | d2de875 | 2014-08-22 18:32:09 -0700 | [diff] [blame] | 1849 | tstamp->start = ktime_get_real_ns(); |
Pablo Neira Ayuso | 5faa1f4 | 2007-09-28 14:43:53 -0700 | [diff] [blame] | 1850 | |
Jozsef Kadlecsik | 7d367e0 | 2012-02-24 11:45:49 +0100 | [diff] [blame] | 1851 | err = nf_conntrack_hash_check_insert(ct); |
| 1852 | if (err < 0) |
| 1853 | goto err2; |
| 1854 | |
Patrick McHardy | 58a3c9b | 2008-01-31 04:36:54 -0800 | [diff] [blame] | 1855 | rcu_read_unlock(); |
Yasuyuki Kozakai | dafc741 | 2006-11-27 10:25:32 -0800 | [diff] [blame] | 1856 | |
Pablo Neira Ayuso | f0a3c08 | 2009-03-16 15:28:09 +0100 | [diff] [blame] | 1857 | return ct; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1858 | |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1859 | err2: |
| 1860 | rcu_read_unlock(); |
| 1861 | err1: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1862 | nf_conntrack_free(ct); |
Pablo Neira Ayuso | f0a3c08 | 2009-03-16 15:28:09 +0100 | [diff] [blame] | 1863 | return ERR_PTR(err); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1864 | } |
| 1865 | |
Pablo Neira Ayuso | 7b8002a | 2015-12-15 18:41:56 +0100 | [diff] [blame] | 1866 | static int ctnetlink_new_conntrack(struct net *net, struct sock *ctnl, |
| 1867 | struct sk_buff *skb, |
| 1868 | const struct nlmsghdr *nlh, |
| 1869 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1870 | { |
| 1871 | struct nf_conntrack_tuple otuple, rtuple; |
| 1872 | struct nf_conntrack_tuple_hash *h = NULL; |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 1873 | struct nfgenmsg *nfmsg = nlmsg_data(nlh); |
Jozsef Kadlecsik | 7d367e0 | 2012-02-24 11:45:49 +0100 | [diff] [blame] | 1874 | struct nf_conn *ct; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1875 | u_int8_t u3 = nfmsg->nfgen_family; |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 1876 | struct nf_conntrack_zone zone; |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 1877 | int err; |
| 1878 | |
| 1879 | err = ctnetlink_parse_zone(cda[CTA_ZONE], &zone); |
| 1880 | if (err < 0) |
| 1881 | return err; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1882 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1883 | if (cda[CTA_TUPLE_ORIG]) { |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 1884 | err = ctnetlink_parse_tuple(cda, &otuple, CTA_TUPLE_ORIG, |
| 1885 | u3, &zone); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1886 | if (err < 0) |
| 1887 | return err; |
| 1888 | } |
| 1889 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1890 | if (cda[CTA_TUPLE_REPLY]) { |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 1891 | err = ctnetlink_parse_tuple(cda, &rtuple, CTA_TUPLE_REPLY, |
| 1892 | u3, &zone); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1893 | if (err < 0) |
| 1894 | return err; |
| 1895 | } |
| 1896 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1897 | if (cda[CTA_TUPLE_ORIG]) |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 1898 | h = nf_conntrack_find_get(net, &zone, &otuple); |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1899 | else if (cda[CTA_TUPLE_REPLY]) |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 1900 | h = nf_conntrack_find_get(net, &zone, &rtuple); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1901 | |
| 1902 | if (h == NULL) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1903 | err = -ENOENT; |
Pablo Neira Ayuso | f0a3c08 | 2009-03-16 15:28:09 +0100 | [diff] [blame] | 1904 | if (nlh->nlmsg_flags & NLM_F_CREATE) { |
Pablo Neira Ayuso | fecc113 | 2009-05-05 17:48:26 +0200 | [diff] [blame] | 1905 | enum ip_conntrack_events events; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1906 | |
Florian Westphal | 442fad9 | 2013-02-11 23:22:38 +0000 | [diff] [blame] | 1907 | if (!cda[CTA_TUPLE_ORIG] || !cda[CTA_TUPLE_REPLY]) |
| 1908 | return -EINVAL; |
| 1909 | |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 1910 | ct = ctnetlink_create_conntrack(net, &zone, cda, &otuple, |
Pablo Neira Ayuso | f0a3c08 | 2009-03-16 15:28:09 +0100 | [diff] [blame] | 1911 | &rtuple, u3); |
Jozsef Kadlecsik | 7d367e0 | 2012-02-24 11:45:49 +0100 | [diff] [blame] | 1912 | if (IS_ERR(ct)) |
| 1913 | return PTR_ERR(ct); |
| 1914 | |
Pablo Neira Ayuso | f0a3c08 | 2009-03-16 15:28:09 +0100 | [diff] [blame] | 1915 | err = 0; |
Pablo Neira Ayuso | fecc113 | 2009-05-05 17:48:26 +0200 | [diff] [blame] | 1916 | if (test_bit(IPS_EXPECTED_BIT, &ct->status)) |
| 1917 | events = IPCT_RELATED; |
| 1918 | else |
| 1919 | events = IPCT_NEW; |
| 1920 | |
Florian Westphal | 9b21f6a | 2013-01-11 06:30:46 +0000 | [diff] [blame] | 1921 | if (cda[CTA_LABELS] && |
| 1922 | ctnetlink_attach_labels(ct, cda) == 0) |
| 1923 | events |= (1 << IPCT_LABEL); |
| 1924 | |
Patrick McHardy | 858b3133 | 2010-02-03 13:48:53 +0100 | [diff] [blame] | 1925 | nf_conntrack_eventmask_report((1 << IPCT_REPLY) | |
| 1926 | (1 << IPCT_ASSURED) | |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 1927 | (1 << IPCT_HELPER) | |
| 1928 | (1 << IPCT_PROTOINFO) | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1929 | (1 << IPCT_SEQADJ) | |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 1930 | (1 << IPCT_MARK) | events, |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 1931 | ct, NETLINK_CB(skb).portid, |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 1932 | nlmsg_report(nlh)); |
Pablo Neira Ayuso | f0a3c08 | 2009-03-16 15:28:09 +0100 | [diff] [blame] | 1933 | nf_ct_put(ct); |
Jozsef Kadlecsik | 7d367e0 | 2012-02-24 11:45:49 +0100 | [diff] [blame] | 1934 | } |
Pablo Neira Ayuso | 5faa1f4 | 2007-09-28 14:43:53 -0700 | [diff] [blame] | 1935 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1936 | return err; |
| 1937 | } |
| 1938 | /* implicit 'else' */ |
| 1939 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1940 | err = -EEXIST; |
Jozsef Kadlecsik | 7d367e0 | 2012-02-24 11:45:49 +0100 | [diff] [blame] | 1941 | ct = nf_ct_tuplehash_to_ctrack(h); |
Pablo Neira Ayuso | ff4ca82 | 2007-08-07 18:11:26 -0700 | [diff] [blame] | 1942 | if (!(nlh->nlmsg_flags & NLM_F_EXCL)) { |
Jesper Dangaard Brouer | ca7433d | 2014-03-03 14:46:01 +0100 | [diff] [blame] | 1943 | spin_lock_bh(&nf_conntrack_expect_lock); |
Pablo Neira Ayuso | 19abb7b | 2008-11-18 11:56:20 +0100 | [diff] [blame] | 1944 | err = ctnetlink_change_conntrack(ct, cda); |
Jesper Dangaard Brouer | ca7433d | 2014-03-03 14:46:01 +0100 | [diff] [blame] | 1945 | spin_unlock_bh(&nf_conntrack_expect_lock); |
Pablo Neira Ayuso | 19abb7b | 2008-11-18 11:56:20 +0100 | [diff] [blame] | 1946 | if (err == 0) { |
Patrick McHardy | 858b3133 | 2010-02-03 13:48:53 +0100 | [diff] [blame] | 1947 | nf_conntrack_eventmask_report((1 << IPCT_REPLY) | |
| 1948 | (1 << IPCT_ASSURED) | |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 1949 | (1 << IPCT_HELPER) | |
Florian Westphal | 797a7d6 | 2013-06-21 16:51:30 +0200 | [diff] [blame] | 1950 | (1 << IPCT_LABEL) | |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 1951 | (1 << IPCT_PROTOINFO) | |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 1952 | (1 << IPCT_SEQADJ) | |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 1953 | (1 << IPCT_MARK), |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 1954 | ct, NETLINK_CB(skb).portid, |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 1955 | nlmsg_report(nlh)); |
Jozsef Kadlecsik | 7d367e0 | 2012-02-24 11:45:49 +0100 | [diff] [blame] | 1956 | } |
Pablo Neira Ayuso | ff4ca82 | 2007-08-07 18:11:26 -0700 | [diff] [blame] | 1957 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1958 | |
Jozsef Kadlecsik | 7d367e0 | 2012-02-24 11:45:49 +0100 | [diff] [blame] | 1959 | nf_ct_put(ct); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1960 | return err; |
| 1961 | } |
| 1962 | |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 1963 | static int |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 1964 | 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] | 1965 | __u16 cpu, const struct ip_conntrack_stat *st) |
| 1966 | { |
| 1967 | struct nlmsghdr *nlh; |
| 1968 | struct nfgenmsg *nfmsg; |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 1969 | unsigned int flags = portid ? NLM_F_MULTI : 0, event; |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 1970 | |
| 1971 | event = (NFNL_SUBSYS_CTNETLINK << 8 | IPCTNL_MSG_CT_GET_STATS_CPU); |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 1972 | nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags); |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 1973 | if (nlh == NULL) |
| 1974 | goto nlmsg_failure; |
| 1975 | |
| 1976 | nfmsg = nlmsg_data(nlh); |
| 1977 | nfmsg->nfgen_family = AF_UNSPEC; |
| 1978 | nfmsg->version = NFNETLINK_V0; |
| 1979 | nfmsg->res_id = htons(cpu); |
| 1980 | |
| 1981 | if (nla_put_be32(skb, CTA_STATS_SEARCHED, htonl(st->searched)) || |
| 1982 | nla_put_be32(skb, CTA_STATS_FOUND, htonl(st->found)) || |
| 1983 | nla_put_be32(skb, CTA_STATS_NEW, htonl(st->new)) || |
| 1984 | nla_put_be32(skb, CTA_STATS_INVALID, htonl(st->invalid)) || |
| 1985 | nla_put_be32(skb, CTA_STATS_IGNORE, htonl(st->ignore)) || |
| 1986 | nla_put_be32(skb, CTA_STATS_DELETE, htonl(st->delete)) || |
| 1987 | nla_put_be32(skb, CTA_STATS_DELETE_LIST, htonl(st->delete_list)) || |
| 1988 | nla_put_be32(skb, CTA_STATS_INSERT, htonl(st->insert)) || |
| 1989 | nla_put_be32(skb, CTA_STATS_INSERT_FAILED, |
| 1990 | htonl(st->insert_failed)) || |
| 1991 | nla_put_be32(skb, CTA_STATS_DROP, htonl(st->drop)) || |
| 1992 | nla_put_be32(skb, CTA_STATS_EARLY_DROP, htonl(st->early_drop)) || |
| 1993 | nla_put_be32(skb, CTA_STATS_ERROR, htonl(st->error)) || |
| 1994 | nla_put_be32(skb, CTA_STATS_SEARCH_RESTART, |
| 1995 | htonl(st->search_restart))) |
| 1996 | goto nla_put_failure; |
| 1997 | |
| 1998 | nlmsg_end(skb, nlh); |
| 1999 | return skb->len; |
| 2000 | |
| 2001 | nla_put_failure: |
| 2002 | nlmsg_failure: |
| 2003 | nlmsg_cancel(skb, nlh); |
| 2004 | return -1; |
| 2005 | } |
| 2006 | |
| 2007 | static int |
| 2008 | ctnetlink_ct_stat_cpu_dump(struct sk_buff *skb, struct netlink_callback *cb) |
| 2009 | { |
| 2010 | int cpu; |
| 2011 | struct net *net = sock_net(skb->sk); |
| 2012 | |
| 2013 | if (cb->args[0] == nr_cpu_ids) |
| 2014 | return 0; |
| 2015 | |
| 2016 | for (cpu = cb->args[0]; cpu < nr_cpu_ids; cpu++) { |
| 2017 | const struct ip_conntrack_stat *st; |
| 2018 | |
| 2019 | if (!cpu_possible(cpu)) |
| 2020 | continue; |
| 2021 | |
| 2022 | st = per_cpu_ptr(net->ct.stat, cpu); |
| 2023 | if (ctnetlink_ct_stat_cpu_fill_info(skb, |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2024 | NETLINK_CB(cb->skb).portid, |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 2025 | cb->nlh->nlmsg_seq, |
| 2026 | cpu, st) < 0) |
| 2027 | break; |
| 2028 | } |
| 2029 | cb->args[0] = cpu; |
| 2030 | |
| 2031 | return skb->len; |
| 2032 | } |
| 2033 | |
Pablo Neira Ayuso | 7b8002a | 2015-12-15 18:41:56 +0100 | [diff] [blame] | 2034 | static int ctnetlink_stat_ct_cpu(struct net *net, struct sock *ctnl, |
| 2035 | struct sk_buff *skb, |
| 2036 | const struct nlmsghdr *nlh, |
| 2037 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 2038 | { |
| 2039 | if (nlh->nlmsg_flags & NLM_F_DUMP) { |
| 2040 | struct netlink_dump_control c = { |
| 2041 | .dump = ctnetlink_ct_stat_cpu_dump, |
| 2042 | }; |
| 2043 | return netlink_dump_start(ctnl, skb, nlh, &c); |
| 2044 | } |
| 2045 | |
| 2046 | return 0; |
| 2047 | } |
| 2048 | |
| 2049 | static int |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2050 | 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] | 2051 | struct net *net) |
| 2052 | { |
| 2053 | struct nlmsghdr *nlh; |
| 2054 | struct nfgenmsg *nfmsg; |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2055 | unsigned int flags = portid ? NLM_F_MULTI : 0, event; |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 2056 | unsigned int nr_conntracks = atomic_read(&net->ct.count); |
| 2057 | |
| 2058 | event = (NFNL_SUBSYS_CTNETLINK << 8 | IPCTNL_MSG_CT_GET_STATS); |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2059 | nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags); |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 2060 | if (nlh == NULL) |
| 2061 | goto nlmsg_failure; |
| 2062 | |
| 2063 | nfmsg = nlmsg_data(nlh); |
| 2064 | nfmsg->nfgen_family = AF_UNSPEC; |
| 2065 | nfmsg->version = NFNETLINK_V0; |
| 2066 | nfmsg->res_id = 0; |
| 2067 | |
| 2068 | if (nla_put_be32(skb, CTA_STATS_GLOBAL_ENTRIES, htonl(nr_conntracks))) |
| 2069 | goto nla_put_failure; |
| 2070 | |
| 2071 | nlmsg_end(skb, nlh); |
| 2072 | return skb->len; |
| 2073 | |
| 2074 | nla_put_failure: |
| 2075 | nlmsg_failure: |
| 2076 | nlmsg_cancel(skb, nlh); |
| 2077 | return -1; |
| 2078 | } |
| 2079 | |
Pablo Neira Ayuso | 7b8002a | 2015-12-15 18:41:56 +0100 | [diff] [blame] | 2080 | static int ctnetlink_stat_ct(struct net *net, struct sock *ctnl, |
| 2081 | struct sk_buff *skb, const struct nlmsghdr *nlh, |
| 2082 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 2083 | { |
| 2084 | struct sk_buff *skb2; |
| 2085 | int err; |
| 2086 | |
| 2087 | skb2 = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| 2088 | if (skb2 == NULL) |
| 2089 | return -ENOMEM; |
| 2090 | |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2091 | err = ctnetlink_stat_ct_fill_info(skb2, NETLINK_CB(skb).portid, |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 2092 | nlh->nlmsg_seq, |
| 2093 | NFNL_MSG_TYPE(nlh->nlmsg_type), |
| 2094 | sock_net(skb->sk)); |
| 2095 | if (err <= 0) |
| 2096 | goto free; |
| 2097 | |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2098 | err = netlink_unicast(ctnl, skb2, NETLINK_CB(skb).portid, MSG_DONTWAIT); |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 2099 | if (err < 0) |
| 2100 | goto out; |
| 2101 | |
| 2102 | return 0; |
| 2103 | |
| 2104 | free: |
| 2105 | kfree_skb(skb2); |
| 2106 | out: |
| 2107 | /* this avoids a loop in nfnetlink. */ |
| 2108 | return err == -EAGAIN ? -ENOBUFS : err; |
| 2109 | } |
| 2110 | |
Pablo Neira Ayuso | bd07793 | 2013-08-07 18:13:20 +0200 | [diff] [blame] | 2111 | static const struct nla_policy exp_nla_policy[CTA_EXPECT_MAX+1] = { |
| 2112 | [CTA_EXPECT_MASTER] = { .type = NLA_NESTED }, |
| 2113 | [CTA_EXPECT_TUPLE] = { .type = NLA_NESTED }, |
| 2114 | [CTA_EXPECT_MASK] = { .type = NLA_NESTED }, |
| 2115 | [CTA_EXPECT_TIMEOUT] = { .type = NLA_U32 }, |
| 2116 | [CTA_EXPECT_ID] = { .type = NLA_U32 }, |
| 2117 | [CTA_EXPECT_HELP_NAME] = { .type = NLA_NUL_STRING, |
| 2118 | .len = NF_CT_HELPER_NAME_LEN - 1 }, |
| 2119 | [CTA_EXPECT_ZONE] = { .type = NLA_U16 }, |
| 2120 | [CTA_EXPECT_FLAGS] = { .type = NLA_U32 }, |
| 2121 | [CTA_EXPECT_CLASS] = { .type = NLA_U32 }, |
| 2122 | [CTA_EXPECT_NAT] = { .type = NLA_NESTED }, |
| 2123 | [CTA_EXPECT_FN] = { .type = NLA_NUL_STRING }, |
| 2124 | }; |
| 2125 | |
| 2126 | static struct nf_conntrack_expect * |
| 2127 | ctnetlink_alloc_expect(const struct nlattr *const cda[], struct nf_conn *ct, |
| 2128 | struct nf_conntrack_helper *helper, |
| 2129 | struct nf_conntrack_tuple *tuple, |
| 2130 | struct nf_conntrack_tuple *mask); |
| 2131 | |
Ken-ichirou MATSUZAWA | 83f3e94 | 2015-10-05 11:48:47 +0900 | [diff] [blame] | 2132 | #ifdef CONFIG_NETFILTER_NETLINK_GLUE_CT |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2133 | static size_t |
Ken-ichirou MATSUZAWA | a4b4766 | 2015-10-05 11:47:13 +0900 | [diff] [blame] | 2134 | ctnetlink_glue_build_size(const struct nf_conn *ct) |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2135 | { |
| 2136 | return 3 * nla_total_size(0) /* CTA_TUPLE_ORIG|REPL|MASTER */ |
| 2137 | + 3 * nla_total_size(0) /* CTA_TUPLE_IP */ |
| 2138 | + 3 * nla_total_size(0) /* CTA_TUPLE_PROTO */ |
| 2139 | + 3 * nla_total_size(sizeof(u_int8_t)) /* CTA_PROTO_NUM */ |
| 2140 | + nla_total_size(sizeof(u_int32_t)) /* CTA_ID */ |
| 2141 | + nla_total_size(sizeof(u_int32_t)) /* CTA_STATUS */ |
| 2142 | + nla_total_size(sizeof(u_int32_t)) /* CTA_TIMEOUT */ |
| 2143 | + nla_total_size(0) /* CTA_PROTOINFO */ |
| 2144 | + nla_total_size(0) /* CTA_HELP */ |
| 2145 | + nla_total_size(NF_CT_HELPER_NAME_LEN) /* CTA_HELP_NAME */ |
| 2146 | + ctnetlink_secctx_size(ct) |
| 2147 | #ifdef CONFIG_NF_NAT_NEEDED |
| 2148 | + 2 * nla_total_size(0) /* CTA_NAT_SEQ_ADJ_ORIG|REPL */ |
| 2149 | + 6 * nla_total_size(sizeof(u_int32_t)) /* CTA_NAT_SEQ_OFFSET */ |
| 2150 | #endif |
| 2151 | #ifdef CONFIG_NF_CONNTRACK_MARK |
| 2152 | + nla_total_size(sizeof(u_int32_t)) /* CTA_MARK */ |
| 2153 | #endif |
Ken-ichirou MATSUZAWA | 4a00106 | 2014-06-16 13:52:34 +0200 | [diff] [blame] | 2154 | #ifdef CONFIG_NF_CONNTRACK_ZONES |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 2155 | + 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] | 2156 | #endif |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2157 | + ctnetlink_proto_size(ct) |
| 2158 | ; |
| 2159 | } |
| 2160 | |
Ken-ichirou MATSUZAWA | 224a059 | 2015-10-05 11:49:56 +0900 | [diff] [blame] | 2161 | 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] | 2162 | enum ip_conntrack_info *ctinfo) |
Pablo Neira Ayuso | b7bd180 | 2015-09-30 22:53:44 +0100 | [diff] [blame] | 2163 | { |
| 2164 | struct nf_conn *ct; |
| 2165 | |
| 2166 | ct = nf_ct_get(skb, ctinfo); |
| 2167 | if (ct && nf_ct_is_untracked(ct)) |
| 2168 | ct = NULL; |
| 2169 | |
| 2170 | return ct; |
| 2171 | } |
| 2172 | |
Ken-ichirou MATSUZAWA | a4b4766 | 2015-10-05 11:47:13 +0900 | [diff] [blame] | 2173 | 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] | 2174 | { |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 2175 | const struct nf_conntrack_zone *zone; |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2176 | struct nlattr *nest_parms; |
| 2177 | |
| 2178 | rcu_read_lock(); |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 2179 | zone = nf_ct_zone(ct); |
| 2180 | |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2181 | nest_parms = nla_nest_start(skb, CTA_TUPLE_ORIG | NLA_F_NESTED); |
| 2182 | if (!nest_parms) |
| 2183 | goto nla_put_failure; |
| 2184 | if (ctnetlink_dump_tuples(skb, nf_ct_tuple(ct, IP_CT_DIR_ORIGINAL)) < 0) |
| 2185 | goto nla_put_failure; |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 2186 | if (ctnetlink_dump_zone_id(skb, CTA_TUPLE_ZONE, zone, |
| 2187 | NF_CT_ZONE_DIR_ORIG) < 0) |
| 2188 | goto nla_put_failure; |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2189 | nla_nest_end(skb, nest_parms); |
| 2190 | |
| 2191 | nest_parms = nla_nest_start(skb, CTA_TUPLE_REPLY | NLA_F_NESTED); |
| 2192 | if (!nest_parms) |
| 2193 | goto nla_put_failure; |
| 2194 | if (ctnetlink_dump_tuples(skb, nf_ct_tuple(ct, IP_CT_DIR_REPLY)) < 0) |
| 2195 | goto nla_put_failure; |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 2196 | if (ctnetlink_dump_zone_id(skb, CTA_TUPLE_ZONE, zone, |
| 2197 | NF_CT_ZONE_DIR_REPL) < 0) |
| 2198 | goto nla_put_failure; |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2199 | nla_nest_end(skb, nest_parms); |
| 2200 | |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 2201 | if (ctnetlink_dump_zone_id(skb, CTA_ZONE, zone, |
| 2202 | NF_CT_DEFAULT_ZONE_DIR) < 0) |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 2203 | goto nla_put_failure; |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2204 | |
| 2205 | if (ctnetlink_dump_id(skb, ct) < 0) |
| 2206 | goto nla_put_failure; |
| 2207 | |
| 2208 | if (ctnetlink_dump_status(skb, ct) < 0) |
| 2209 | goto nla_put_failure; |
| 2210 | |
| 2211 | if (ctnetlink_dump_timeout(skb, ct) < 0) |
| 2212 | goto nla_put_failure; |
| 2213 | |
| 2214 | if (ctnetlink_dump_protoinfo(skb, ct) < 0) |
| 2215 | goto nla_put_failure; |
| 2216 | |
| 2217 | if (ctnetlink_dump_helpinfo(skb, ct) < 0) |
| 2218 | goto nla_put_failure; |
| 2219 | |
| 2220 | #ifdef CONFIG_NF_CONNTRACK_SECMARK |
| 2221 | if (ct->secmark && ctnetlink_dump_secctx(skb, ct) < 0) |
| 2222 | goto nla_put_failure; |
| 2223 | #endif |
| 2224 | if (ct->master && ctnetlink_dump_master(skb, ct) < 0) |
| 2225 | goto nla_put_failure; |
| 2226 | |
| 2227 | if ((ct->status & IPS_SEQ_ADJUST) && |
Patrick McHardy | 41d73ec | 2013-08-27 08:50:12 +0200 | [diff] [blame] | 2228 | ctnetlink_dump_ct_seq_adj(skb, ct) < 0) |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2229 | goto nla_put_failure; |
| 2230 | |
| 2231 | #ifdef CONFIG_NF_CONNTRACK_MARK |
| 2232 | if (ct->mark && ctnetlink_dump_mark(skb, ct) < 0) |
| 2233 | goto nla_put_failure; |
| 2234 | #endif |
Florian Westphal | 0ceabd8 | 2013-01-11 06:30:45 +0000 | [diff] [blame] | 2235 | if (ctnetlink_dump_labels(skb, ct) < 0) |
| 2236 | goto nla_put_failure; |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2237 | rcu_read_unlock(); |
| 2238 | return 0; |
| 2239 | |
| 2240 | nla_put_failure: |
| 2241 | rcu_read_unlock(); |
| 2242 | return -ENOSPC; |
| 2243 | } |
| 2244 | |
| 2245 | static int |
Ken-ichirou MATSUZAWA | a4b4766 | 2015-10-05 11:47:13 +0900 | [diff] [blame] | 2246 | ctnetlink_glue_build(struct sk_buff *skb, struct nf_conn *ct, |
| 2247 | enum ip_conntrack_info ctinfo, |
| 2248 | u_int16_t ct_attr, u_int16_t ct_info_attr) |
Pablo Neira Ayuso | b7bd180 | 2015-09-30 22:53:44 +0100 | [diff] [blame] | 2249 | { |
| 2250 | struct nlattr *nest_parms; |
| 2251 | |
| 2252 | nest_parms = nla_nest_start(skb, ct_attr | NLA_F_NESTED); |
| 2253 | if (!nest_parms) |
| 2254 | goto nla_put_failure; |
| 2255 | |
Ken-ichirou MATSUZAWA | a4b4766 | 2015-10-05 11:47:13 +0900 | [diff] [blame] | 2256 | if (__ctnetlink_glue_build(skb, ct) < 0) |
Pablo Neira Ayuso | b7bd180 | 2015-09-30 22:53:44 +0100 | [diff] [blame] | 2257 | goto nla_put_failure; |
| 2258 | |
| 2259 | nla_nest_end(skb, nest_parms); |
| 2260 | |
| 2261 | if (nla_put_be32(skb, ct_info_attr, htonl(ctinfo))) |
| 2262 | goto nla_put_failure; |
| 2263 | |
| 2264 | return 0; |
| 2265 | |
| 2266 | nla_put_failure: |
| 2267 | return -ENOSPC; |
| 2268 | } |
| 2269 | |
| 2270 | static int |
Ken-ichirou MATSUZAWA | a4b4766 | 2015-10-05 11:47:13 +0900 | [diff] [blame] | 2271 | 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] | 2272 | { |
| 2273 | int err; |
| 2274 | |
| 2275 | if (cda[CTA_TIMEOUT]) { |
| 2276 | err = ctnetlink_change_timeout(ct, cda); |
| 2277 | if (err < 0) |
| 2278 | return err; |
| 2279 | } |
| 2280 | if (cda[CTA_STATUS]) { |
| 2281 | err = ctnetlink_change_status(ct, cda); |
| 2282 | if (err < 0) |
| 2283 | return err; |
| 2284 | } |
| 2285 | if (cda[CTA_HELP]) { |
| 2286 | err = ctnetlink_change_helper(ct, cda); |
| 2287 | if (err < 0) |
| 2288 | return err; |
| 2289 | } |
Florian Westphal | 9b21f6a | 2013-01-11 06:30:46 +0000 | [diff] [blame] | 2290 | if (cda[CTA_LABELS]) { |
| 2291 | err = ctnetlink_attach_labels(ct, cda); |
| 2292 | if (err < 0) |
| 2293 | return err; |
| 2294 | } |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2295 | #if defined(CONFIG_NF_CONNTRACK_MARK) |
Florian Westphal | 534473c | 2013-12-19 18:25:15 +0100 | [diff] [blame] | 2296 | if (cda[CTA_MARK]) { |
| 2297 | u32 mask = 0, mark, newmark; |
| 2298 | if (cda[CTA_MARK_MASK]) |
| 2299 | mask = ~ntohl(nla_get_be32(cda[CTA_MARK_MASK])); |
| 2300 | |
| 2301 | mark = ntohl(nla_get_be32(cda[CTA_MARK])); |
| 2302 | newmark = (ct->mark & mask) ^ mark; |
| 2303 | if (newmark != ct->mark) |
| 2304 | ct->mark = newmark; |
| 2305 | } |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2306 | #endif |
| 2307 | return 0; |
| 2308 | } |
| 2309 | |
| 2310 | static int |
Ken-ichirou MATSUZAWA | a4b4766 | 2015-10-05 11:47:13 +0900 | [diff] [blame] | 2311 | ctnetlink_glue_parse(const struct nlattr *attr, struct nf_conn *ct) |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2312 | { |
| 2313 | struct nlattr *cda[CTA_MAX+1]; |
Pablo Neira Ayuso | 68e035c | 2012-08-14 12:47:37 +0200 | [diff] [blame] | 2314 | int ret; |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2315 | |
Daniel Borkmann | 130ffbc | 2013-06-12 17:54:51 +0200 | [diff] [blame] | 2316 | ret = nla_parse_nested(cda, CTA_MAX, attr, ct_nla_policy); |
| 2317 | if (ret < 0) |
| 2318 | return ret; |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2319 | |
Jesper Dangaard Brouer | ca7433d | 2014-03-03 14:46:01 +0100 | [diff] [blame] | 2320 | spin_lock_bh(&nf_conntrack_expect_lock); |
Ken-ichirou MATSUZAWA | a4b4766 | 2015-10-05 11:47:13 +0900 | [diff] [blame] | 2321 | ret = ctnetlink_glue_parse_ct((const struct nlattr **)cda, ct); |
Jesper Dangaard Brouer | ca7433d | 2014-03-03 14:46:01 +0100 | [diff] [blame] | 2322 | spin_unlock_bh(&nf_conntrack_expect_lock); |
Pablo Neira Ayuso | 68e035c | 2012-08-14 12:47:37 +0200 | [diff] [blame] | 2323 | |
| 2324 | return ret; |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2325 | } |
| 2326 | |
Ken-ichirou MATSUZAWA | a4b4766 | 2015-10-05 11:47:13 +0900 | [diff] [blame] | 2327 | static int ctnetlink_glue_exp_parse(const struct nlattr * const *cda, |
| 2328 | const struct nf_conn *ct, |
| 2329 | struct nf_conntrack_tuple *tuple, |
| 2330 | struct nf_conntrack_tuple *mask) |
Pablo Neira Ayuso | bd07793 | 2013-08-07 18:13:20 +0200 | [diff] [blame] | 2331 | { |
| 2332 | int err; |
| 2333 | |
| 2334 | err = ctnetlink_parse_tuple(cda, tuple, CTA_EXPECT_TUPLE, |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 2335 | nf_ct_l3num(ct), NULL); |
Pablo Neira Ayuso | bd07793 | 2013-08-07 18:13:20 +0200 | [diff] [blame] | 2336 | if (err < 0) |
| 2337 | return err; |
| 2338 | |
| 2339 | return ctnetlink_parse_tuple(cda, mask, CTA_EXPECT_MASK, |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 2340 | nf_ct_l3num(ct), NULL); |
Pablo Neira Ayuso | bd07793 | 2013-08-07 18:13:20 +0200 | [diff] [blame] | 2341 | } |
| 2342 | |
| 2343 | static int |
Ken-ichirou MATSUZAWA | a4b4766 | 2015-10-05 11:47:13 +0900 | [diff] [blame] | 2344 | ctnetlink_glue_attach_expect(const struct nlattr *attr, struct nf_conn *ct, |
| 2345 | u32 portid, u32 report) |
Pablo Neira Ayuso | bd07793 | 2013-08-07 18:13:20 +0200 | [diff] [blame] | 2346 | { |
| 2347 | struct nlattr *cda[CTA_EXPECT_MAX+1]; |
| 2348 | struct nf_conntrack_tuple tuple, mask; |
Florian Westphal | b7e092c | 2013-08-27 11:47:26 +0200 | [diff] [blame] | 2349 | struct nf_conntrack_helper *helper = NULL; |
Pablo Neira Ayuso | bd07793 | 2013-08-07 18:13:20 +0200 | [diff] [blame] | 2350 | struct nf_conntrack_expect *exp; |
| 2351 | int err; |
| 2352 | |
| 2353 | err = nla_parse_nested(cda, CTA_EXPECT_MAX, attr, exp_nla_policy); |
| 2354 | if (err < 0) |
| 2355 | return err; |
| 2356 | |
Ken-ichirou MATSUZAWA | a4b4766 | 2015-10-05 11:47:13 +0900 | [diff] [blame] | 2357 | err = ctnetlink_glue_exp_parse((const struct nlattr * const *)cda, |
| 2358 | ct, &tuple, &mask); |
Pablo Neira Ayuso | bd07793 | 2013-08-07 18:13:20 +0200 | [diff] [blame] | 2359 | if (err < 0) |
| 2360 | return err; |
| 2361 | |
| 2362 | if (cda[CTA_EXPECT_HELP_NAME]) { |
| 2363 | const char *helpname = nla_data(cda[CTA_EXPECT_HELP_NAME]); |
| 2364 | |
| 2365 | helper = __nf_conntrack_helper_find(helpname, nf_ct_l3num(ct), |
| 2366 | nf_ct_protonum(ct)); |
| 2367 | if (helper == NULL) |
| 2368 | return -EOPNOTSUPP; |
| 2369 | } |
| 2370 | |
| 2371 | exp = ctnetlink_alloc_expect((const struct nlattr * const *)cda, ct, |
| 2372 | helper, &tuple, &mask); |
| 2373 | if (IS_ERR(exp)) |
| 2374 | return PTR_ERR(exp); |
| 2375 | |
| 2376 | err = nf_ct_expect_related_report(exp, portid, report); |
| 2377 | if (err < 0) { |
| 2378 | nf_ct_expect_put(exp); |
| 2379 | return err; |
| 2380 | } |
| 2381 | |
| 2382 | return 0; |
| 2383 | } |
| 2384 | |
Ken-ichirou MATSUZAWA | a4b4766 | 2015-10-05 11:47:13 +0900 | [diff] [blame] | 2385 | static void ctnetlink_glue_seqadj(struct sk_buff *skb, struct nf_conn *ct, |
| 2386 | enum ip_conntrack_info ctinfo, int diff) |
Pablo Neira Ayuso | b7bd180 | 2015-09-30 22:53:44 +0100 | [diff] [blame] | 2387 | { |
| 2388 | if (!(ct->status & IPS_NAT_MASK)) |
| 2389 | return; |
| 2390 | |
| 2391 | nf_ct_tcp_seqadj_set(skb, ct, ctinfo, diff); |
| 2392 | } |
| 2393 | |
Ken-ichirou MATSUZAWA | a4b4766 | 2015-10-05 11:47:13 +0900 | [diff] [blame] | 2394 | static struct nfnl_ct_hook ctnetlink_glue_hook = { |
| 2395 | .get_ct = ctnetlink_glue_get_ct, |
| 2396 | .build_size = ctnetlink_glue_build_size, |
| 2397 | .build = ctnetlink_glue_build, |
| 2398 | .parse = ctnetlink_glue_parse, |
| 2399 | .attach_expect = ctnetlink_glue_attach_expect, |
| 2400 | .seq_adjust = ctnetlink_glue_seqadj, |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2401 | }; |
Ken-ichirou MATSUZAWA | 83f3e94 | 2015-10-05 11:48:47 +0900 | [diff] [blame] | 2402 | #endif /* CONFIG_NETFILTER_NETLINK_GLUE_CT */ |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2403 | |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 2404 | /*********************************************************************** |
| 2405 | * EXPECT |
| 2406 | ***********************************************************************/ |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2407 | |
| 2408 | static inline int |
| 2409 | ctnetlink_exp_dump_tuple(struct sk_buff *skb, |
| 2410 | const struct nf_conntrack_tuple *tuple, |
| 2411 | enum ctattr_expect type) |
| 2412 | { |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2413 | struct nlattr *nest_parms; |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 2414 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2415 | nest_parms = nla_nest_start(skb, type | NLA_F_NESTED); |
| 2416 | if (!nest_parms) |
| 2417 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2418 | if (ctnetlink_dump_tuples(skb, tuple) < 0) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2419 | goto nla_put_failure; |
| 2420 | nla_nest_end(skb, nest_parms); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2421 | |
| 2422 | return 0; |
| 2423 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2424 | nla_put_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2425 | return -1; |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 2426 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2427 | |
| 2428 | static inline int |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 2429 | ctnetlink_exp_dump_mask(struct sk_buff *skb, |
| 2430 | const struct nf_conntrack_tuple *tuple, |
Patrick McHardy | d4156e8 | 2007-07-07 22:31:32 -0700 | [diff] [blame] | 2431 | const struct nf_conntrack_tuple_mask *mask) |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 2432 | { |
| 2433 | int ret; |
| 2434 | struct nf_conntrack_l3proto *l3proto; |
Martin Josefsson | 605dcad | 2006-11-29 02:35:06 +0100 | [diff] [blame] | 2435 | struct nf_conntrack_l4proto *l4proto; |
Patrick McHardy | d4156e8 | 2007-07-07 22:31:32 -0700 | [diff] [blame] | 2436 | struct nf_conntrack_tuple m; |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2437 | struct nlattr *nest_parms; |
Patrick McHardy | d4156e8 | 2007-07-07 22:31:32 -0700 | [diff] [blame] | 2438 | |
| 2439 | memset(&m, 0xFF, sizeof(m)); |
Patrick McHardy | d4156e8 | 2007-07-07 22:31:32 -0700 | [diff] [blame] | 2440 | memcpy(&m.src.u3, &mask->src.u3, sizeof(m.src.u3)); |
Patrick McHardy | e578756 | 2010-01-26 17:04:02 +0100 | [diff] [blame] | 2441 | m.src.u.all = mask->src.u.all; |
| 2442 | m.dst.protonum = tuple->dst.protonum; |
Patrick McHardy | d4156e8 | 2007-07-07 22:31:32 -0700 | [diff] [blame] | 2443 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2444 | nest_parms = nla_nest_start(skb, CTA_EXPECT_MASK | NLA_F_NESTED); |
| 2445 | if (!nest_parms) |
| 2446 | goto nla_put_failure; |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 2447 | |
Hans Schillstrom | 3b988ec | 2012-03-05 02:24:29 +0000 | [diff] [blame] | 2448 | rcu_read_lock(); |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 2449 | l3proto = __nf_ct_l3proto_find(tuple->src.l3num); |
Patrick McHardy | d4156e8 | 2007-07-07 22:31:32 -0700 | [diff] [blame] | 2450 | ret = ctnetlink_dump_tuples_ip(skb, &m, l3proto); |
Hans Schillstrom | 3b988ec | 2012-03-05 02:24:29 +0000 | [diff] [blame] | 2451 | if (ret >= 0) { |
| 2452 | l4proto = __nf_ct_l4proto_find(tuple->src.l3num, |
| 2453 | tuple->dst.protonum); |
Patrick McHardy | d4156e8 | 2007-07-07 22:31:32 -0700 | [diff] [blame] | 2454 | ret = ctnetlink_dump_tuples_proto(skb, &m, l4proto); |
Hans Schillstrom | 3b988ec | 2012-03-05 02:24:29 +0000 | [diff] [blame] | 2455 | } |
| 2456 | rcu_read_unlock(); |
| 2457 | |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 2458 | if (unlikely(ret < 0)) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2459 | goto nla_put_failure; |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 2460 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2461 | nla_nest_end(skb, nest_parms); |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 2462 | |
| 2463 | return 0; |
| 2464 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2465 | nla_put_failure: |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 2466 | return -1; |
| 2467 | } |
| 2468 | |
Patrick McHardy | c7232c9 | 2012-08-26 19:14:06 +0200 | [diff] [blame] | 2469 | static const union nf_inet_addr any_addr; |
| 2470 | |
Ilpo Järvinen | bb5cf80 | 2008-01-05 23:11:31 -0800 | [diff] [blame] | 2471 | static int |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2472 | ctnetlink_exp_dump_expect(struct sk_buff *skb, |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 2473 | const struct nf_conntrack_expect *exp) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2474 | { |
| 2475 | struct nf_conn *master = exp->master; |
Xi Wang | c121638 | 2011-12-30 10:40:17 -0500 | [diff] [blame] | 2476 | long timeout = ((long)exp->timeout.expires - (long)jiffies) / HZ; |
Pablo Neira Ayuso | bc01befd | 2010-09-28 21:06:34 +0200 | [diff] [blame] | 2477 | struct nf_conn_help *help; |
Pablo Neira Ayuso | 076a0ca | 2012-02-05 03:41:52 +0100 | [diff] [blame] | 2478 | #ifdef CONFIG_NF_NAT_NEEDED |
| 2479 | struct nlattr *nest_parms; |
| 2480 | struct nf_conntrack_tuple nat_tuple = {}; |
| 2481 | #endif |
Pablo Neira Ayuso | 544d5c7 | 2012-02-05 03:44:51 +0100 | [diff] [blame] | 2482 | struct nf_ct_helper_expectfn *expfn; |
| 2483 | |
Patrick McHardy | d978e5d | 2007-12-17 22:37:03 -0800 | [diff] [blame] | 2484 | if (timeout < 0) |
| 2485 | timeout = 0; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2486 | |
| 2487 | if (ctnetlink_exp_dump_tuple(skb, &exp->tuple, CTA_EXPECT_TUPLE) < 0) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2488 | goto nla_put_failure; |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 2489 | if (ctnetlink_exp_dump_mask(skb, &exp->tuple, &exp->mask) < 0) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2490 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2491 | if (ctnetlink_exp_dump_tuple(skb, |
| 2492 | &master->tuplehash[IP_CT_DIR_ORIGINAL].tuple, |
| 2493 | CTA_EXPECT_MASTER) < 0) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2494 | goto nla_put_failure; |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 2495 | |
Pablo Neira Ayuso | 076a0ca | 2012-02-05 03:41:52 +0100 | [diff] [blame] | 2496 | #ifdef CONFIG_NF_NAT_NEEDED |
Patrick McHardy | c7232c9 | 2012-08-26 19:14:06 +0200 | [diff] [blame] | 2497 | if (!nf_inet_addr_cmp(&exp->saved_addr, &any_addr) || |
| 2498 | exp->saved_proto.all) { |
Pablo Neira Ayuso | 076a0ca | 2012-02-05 03:41:52 +0100 | [diff] [blame] | 2499 | nest_parms = nla_nest_start(skb, CTA_EXPECT_NAT | NLA_F_NESTED); |
| 2500 | if (!nest_parms) |
| 2501 | goto nla_put_failure; |
| 2502 | |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 2503 | if (nla_put_be32(skb, CTA_EXPECT_NAT_DIR, htonl(exp->dir))) |
| 2504 | goto nla_put_failure; |
Pablo Neira Ayuso | 076a0ca | 2012-02-05 03:41:52 +0100 | [diff] [blame] | 2505 | |
| 2506 | nat_tuple.src.l3num = nf_ct_l3num(master); |
Patrick McHardy | c7232c9 | 2012-08-26 19:14:06 +0200 | [diff] [blame] | 2507 | nat_tuple.src.u3 = exp->saved_addr; |
Pablo Neira Ayuso | 076a0ca | 2012-02-05 03:41:52 +0100 | [diff] [blame] | 2508 | nat_tuple.dst.protonum = nf_ct_protonum(master); |
| 2509 | nat_tuple.src.u = exp->saved_proto; |
| 2510 | |
| 2511 | if (ctnetlink_exp_dump_tuple(skb, &nat_tuple, |
| 2512 | CTA_EXPECT_NAT_TUPLE) < 0) |
| 2513 | goto nla_put_failure; |
| 2514 | nla_nest_end(skb, nest_parms); |
| 2515 | } |
| 2516 | #endif |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 2517 | if (nla_put_be32(skb, CTA_EXPECT_TIMEOUT, htonl(timeout)) || |
| 2518 | nla_put_be32(skb, CTA_EXPECT_ID, htonl((unsigned long)exp)) || |
| 2519 | nla_put_be32(skb, CTA_EXPECT_FLAGS, htonl(exp->flags)) || |
| 2520 | nla_put_be32(skb, CTA_EXPECT_CLASS, htonl(exp->class))) |
| 2521 | goto nla_put_failure; |
Pablo Neira Ayuso | bc01befd | 2010-09-28 21:06:34 +0200 | [diff] [blame] | 2522 | help = nfct_help(master); |
| 2523 | if (help) { |
| 2524 | struct nf_conntrack_helper *helper; |
| 2525 | |
| 2526 | helper = rcu_dereference(help->helper); |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 2527 | if (helper && |
| 2528 | nla_put_string(skb, CTA_EXPECT_HELP_NAME, helper->name)) |
| 2529 | goto nla_put_failure; |
Pablo Neira Ayuso | bc01befd | 2010-09-28 21:06:34 +0200 | [diff] [blame] | 2530 | } |
Pablo Neira Ayuso | 544d5c7 | 2012-02-05 03:44:51 +0100 | [diff] [blame] | 2531 | expfn = nf_ct_helper_expectfn_find_by_symbol(exp->expectfn); |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 2532 | if (expfn != NULL && |
| 2533 | nla_put_string(skb, CTA_EXPECT_FN, expfn->name)) |
| 2534 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2535 | |
| 2536 | return 0; |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 2537 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2538 | nla_put_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2539 | return -1; |
| 2540 | } |
| 2541 | |
| 2542 | static int |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2543 | 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] | 2544 | int event, const struct nf_conntrack_expect *exp) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2545 | { |
| 2546 | struct nlmsghdr *nlh; |
| 2547 | struct nfgenmsg *nfmsg; |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2548 | unsigned int flags = portid ? NLM_F_MULTI : 0; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2549 | |
| 2550 | event |= NFNL_SUBSYS_CTNETLINK_EXP << 8; |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2551 | nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags); |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2552 | if (nlh == NULL) |
| 2553 | goto nlmsg_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2554 | |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2555 | nfmsg = nlmsg_data(nlh); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2556 | nfmsg->nfgen_family = exp->tuple.src.l3num; |
| 2557 | nfmsg->version = NFNETLINK_V0; |
| 2558 | nfmsg->res_id = 0; |
| 2559 | |
| 2560 | if (ctnetlink_exp_dump_expect(skb, exp) < 0) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2561 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2562 | |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2563 | nlmsg_end(skb, nlh); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2564 | return skb->len; |
| 2565 | |
| 2566 | nlmsg_failure: |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2567 | nla_put_failure: |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2568 | nlmsg_cancel(skb, nlh); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2569 | return -1; |
| 2570 | } |
| 2571 | |
| 2572 | #ifdef CONFIG_NF_CONNTRACK_EVENTS |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 2573 | static int |
| 2574 | ctnetlink_expect_event(unsigned int events, struct nf_exp_event *item) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2575 | { |
Alexey Dobriyan | 9592a5c | 2010-01-13 16:04:18 +0100 | [diff] [blame] | 2576 | struct nf_conntrack_expect *exp = item->exp; |
| 2577 | struct net *net = nf_ct_exp_net(exp); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2578 | struct nlmsghdr *nlh; |
| 2579 | struct nfgenmsg *nfmsg; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2580 | struct sk_buff *skb; |
Pablo Neira Ayuso | ebbf41d | 2010-10-19 10:19:06 +0200 | [diff] [blame] | 2581 | unsigned int type, group; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2582 | int flags = 0; |
| 2583 | |
Pablo Neira Ayuso | ebbf41d | 2010-10-19 10:19:06 +0200 | [diff] [blame] | 2584 | if (events & (1 << IPEXP_DESTROY)) { |
| 2585 | type = IPCTNL_MSG_EXP_DELETE; |
| 2586 | group = NFNLGRP_CONNTRACK_EXP_DESTROY; |
| 2587 | } else if (events & (1 << IPEXP_NEW)) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2588 | type = IPCTNL_MSG_EXP_NEW; |
| 2589 | flags = NLM_F_CREATE|NLM_F_EXCL; |
Pablo Neira Ayuso | ebbf41d | 2010-10-19 10:19:06 +0200 | [diff] [blame] | 2590 | group = NFNLGRP_CONNTRACK_EXP_NEW; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2591 | } else |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 2592 | return 0; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2593 | |
Pablo Neira Ayuso | ebbf41d | 2010-10-19 10:19:06 +0200 | [diff] [blame] | 2594 | if (!item->report && !nfnetlink_has_listeners(net, group)) |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 2595 | return 0; |
Pablo Neira Ayuso | b3a27bf | 2006-08-22 00:32:05 -0700 | [diff] [blame] | 2596 | |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2597 | skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); |
| 2598 | if (skb == NULL) |
Pablo Neira Ayuso | 150ace0 | 2009-04-17 17:47:31 +0200 | [diff] [blame] | 2599 | goto errout; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2600 | |
Marcus Sundberg | b633ad5 | 2006-02-04 02:11:09 -0800 | [diff] [blame] | 2601 | type |= NFNL_SUBSYS_CTNETLINK_EXP << 8; |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2602 | nlh = nlmsg_put(skb, item->portid, 0, type, sizeof(*nfmsg), flags); |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2603 | if (nlh == NULL) |
| 2604 | goto nlmsg_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2605 | |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2606 | nfmsg = nlmsg_data(nlh); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2607 | nfmsg->nfgen_family = exp->tuple.src.l3num; |
| 2608 | nfmsg->version = NFNETLINK_V0; |
| 2609 | nfmsg->res_id = 0; |
| 2610 | |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 2611 | rcu_read_lock(); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2612 | if (ctnetlink_exp_dump_expect(skb, exp) < 0) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2613 | goto nla_put_failure; |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 2614 | rcu_read_unlock(); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2615 | |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2616 | nlmsg_end(skb, nlh); |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2617 | nfnetlink_send(skb, net, item->portid, group, item->report, GFP_ATOMIC); |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 2618 | return 0; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2619 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2620 | nla_put_failure: |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 2621 | rcu_read_unlock(); |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2622 | nlmsg_cancel(skb, nlh); |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 2623 | nlmsg_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2624 | kfree_skb(skb); |
Pablo Neira Ayuso | 150ace0 | 2009-04-17 17:47:31 +0200 | [diff] [blame] | 2625 | errout: |
Alexey Dobriyan | 9592a5c | 2010-01-13 16:04:18 +0100 | [diff] [blame] | 2626 | nfnetlink_set_err(net, 0, 0, -ENOBUFS); |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 2627 | return 0; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2628 | } |
| 2629 | #endif |
Patrick McHardy | cf6994c | 2007-07-07 22:32:34 -0700 | [diff] [blame] | 2630 | static int ctnetlink_exp_done(struct netlink_callback *cb) |
| 2631 | { |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2632 | if (cb->args[1]) |
| 2633 | nf_ct_expect_put((struct nf_conntrack_expect *)cb->args[1]); |
Patrick McHardy | cf6994c | 2007-07-07 22:32:34 -0700 | [diff] [blame] | 2634 | return 0; |
| 2635 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2636 | |
| 2637 | static int |
| 2638 | ctnetlink_exp_dump_table(struct sk_buff *skb, struct netlink_callback *cb) |
| 2639 | { |
Alexey Dobriyan | 9592a5c | 2010-01-13 16:04:18 +0100 | [diff] [blame] | 2640 | struct net *net = sock_net(skb->sk); |
Patrick McHardy | cf6994c | 2007-07-07 22:32:34 -0700 | [diff] [blame] | 2641 | struct nf_conntrack_expect *exp, *last; |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2642 | struct nfgenmsg *nfmsg = nlmsg_data(cb->nlh); |
Pablo Neira Ayuso | 87711cb | 2006-01-05 12:19:23 -0800 | [diff] [blame] | 2643 | u_int8_t l3proto = nfmsg->nfgen_family; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2644 | |
Patrick McHardy | 7d0742d | 2008-01-31 04:38:19 -0800 | [diff] [blame] | 2645 | rcu_read_lock(); |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2646 | last = (struct nf_conntrack_expect *)cb->args[1]; |
| 2647 | for (; cb->args[0] < nf_ct_expect_hsize; cb->args[0]++) { |
Patrick McHardy | cf6994c | 2007-07-07 22:32:34 -0700 | [diff] [blame] | 2648 | restart: |
Sasha Levin | b67bfe0 | 2013-02-27 17:06:00 -0800 | [diff] [blame] | 2649 | hlist_for_each_entry(exp, &net->ct.expect_hash[cb->args[0]], |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2650 | hnode) { |
| 2651 | if (l3proto && exp->tuple.src.l3num != l3proto) |
Patrick McHardy | cf6994c | 2007-07-07 22:32:34 -0700 | [diff] [blame] | 2652 | continue; |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2653 | if (cb->args[1]) { |
| 2654 | if (exp != last) |
| 2655 | continue; |
| 2656 | cb->args[1] = 0; |
| 2657 | } |
Pablo Neira Ayuso | 8b0a231 | 2009-06-02 20:03:34 +0200 | [diff] [blame] | 2658 | if (ctnetlink_exp_fill_info(skb, |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2659 | NETLINK_CB(cb->skb).portid, |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2660 | cb->nlh->nlmsg_seq, |
| 2661 | IPCTNL_MSG_EXP_NEW, |
Pablo Neira Ayuso | 8b0a231 | 2009-06-02 20:03:34 +0200 | [diff] [blame] | 2662 | exp) < 0) { |
Patrick McHardy | 7d0742d | 2008-01-31 04:38:19 -0800 | [diff] [blame] | 2663 | if (!atomic_inc_not_zero(&exp->use)) |
| 2664 | continue; |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2665 | cb->args[1] = (unsigned long)exp; |
| 2666 | goto out; |
| 2667 | } |
Patrick McHardy | cf6994c | 2007-07-07 22:32:34 -0700 | [diff] [blame] | 2668 | } |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2669 | if (cb->args[1]) { |
| 2670 | cb->args[1] = 0; |
| 2671 | goto restart; |
Patrick McHardy | cf6994c | 2007-07-07 22:32:34 -0700 | [diff] [blame] | 2672 | } |
| 2673 | } |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 2674 | out: |
Patrick McHardy | 7d0742d | 2008-01-31 04:38:19 -0800 | [diff] [blame] | 2675 | rcu_read_unlock(); |
Patrick McHardy | cf6994c | 2007-07-07 22:32:34 -0700 | [diff] [blame] | 2676 | if (last) |
| 2677 | nf_ct_expect_put(last); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2678 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2679 | return skb->len; |
| 2680 | } |
| 2681 | |
Pablo Neira Ayuso | e844a92 | 2013-03-17 23:21:36 +0000 | [diff] [blame] | 2682 | static int |
| 2683 | ctnetlink_exp_ct_dump_table(struct sk_buff *skb, struct netlink_callback *cb) |
| 2684 | { |
| 2685 | struct nf_conntrack_expect *exp, *last; |
| 2686 | struct nfgenmsg *nfmsg = nlmsg_data(cb->nlh); |
| 2687 | struct nf_conn *ct = cb->data; |
| 2688 | struct nf_conn_help *help = nfct_help(ct); |
| 2689 | u_int8_t l3proto = nfmsg->nfgen_family; |
| 2690 | |
| 2691 | if (cb->args[0]) |
| 2692 | return 0; |
| 2693 | |
| 2694 | rcu_read_lock(); |
| 2695 | last = (struct nf_conntrack_expect *)cb->args[1]; |
| 2696 | restart: |
| 2697 | hlist_for_each_entry(exp, &help->expectations, lnode) { |
| 2698 | if (l3proto && exp->tuple.src.l3num != l3proto) |
| 2699 | continue; |
| 2700 | if (cb->args[1]) { |
| 2701 | if (exp != last) |
| 2702 | continue; |
| 2703 | cb->args[1] = 0; |
| 2704 | } |
| 2705 | if (ctnetlink_exp_fill_info(skb, NETLINK_CB(cb->skb).portid, |
| 2706 | cb->nlh->nlmsg_seq, |
| 2707 | IPCTNL_MSG_EXP_NEW, |
| 2708 | exp) < 0) { |
| 2709 | if (!atomic_inc_not_zero(&exp->use)) |
| 2710 | continue; |
| 2711 | cb->args[1] = (unsigned long)exp; |
| 2712 | goto out; |
| 2713 | } |
| 2714 | } |
| 2715 | if (cb->args[1]) { |
| 2716 | cb->args[1] = 0; |
| 2717 | goto restart; |
| 2718 | } |
| 2719 | cb->args[0] = 1; |
| 2720 | out: |
| 2721 | rcu_read_unlock(); |
| 2722 | if (last) |
| 2723 | nf_ct_expect_put(last); |
| 2724 | |
| 2725 | return skb->len; |
| 2726 | } |
| 2727 | |
Pablo Neira Ayuso | 7b8002a | 2015-12-15 18:41:56 +0100 | [diff] [blame] | 2728 | static int ctnetlink_dump_exp_ct(struct net *net, struct sock *ctnl, |
| 2729 | struct sk_buff *skb, |
Pablo Neira Ayuso | e844a92 | 2013-03-17 23:21:36 +0000 | [diff] [blame] | 2730 | const struct nlmsghdr *nlh, |
| 2731 | const struct nlattr * const cda[]) |
| 2732 | { |
| 2733 | int err; |
Pablo Neira Ayuso | e844a92 | 2013-03-17 23:21:36 +0000 | [diff] [blame] | 2734 | struct nfgenmsg *nfmsg = nlmsg_data(nlh); |
| 2735 | u_int8_t u3 = nfmsg->nfgen_family; |
| 2736 | struct nf_conntrack_tuple tuple; |
| 2737 | struct nf_conntrack_tuple_hash *h; |
| 2738 | struct nf_conn *ct; |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 2739 | struct nf_conntrack_zone zone; |
Pablo Neira Ayuso | e844a92 | 2013-03-17 23:21:36 +0000 | [diff] [blame] | 2740 | struct netlink_dump_control c = { |
| 2741 | .dump = ctnetlink_exp_ct_dump_table, |
| 2742 | .done = ctnetlink_exp_done, |
| 2743 | }; |
| 2744 | |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 2745 | err = ctnetlink_parse_tuple(cda, &tuple, CTA_EXPECT_MASTER, |
| 2746 | u3, NULL); |
Pablo Neira Ayuso | e844a92 | 2013-03-17 23:21:36 +0000 | [diff] [blame] | 2747 | if (err < 0) |
| 2748 | return err; |
| 2749 | |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 2750 | err = ctnetlink_parse_zone(cda[CTA_EXPECT_ZONE], &zone); |
| 2751 | if (err < 0) |
| 2752 | return err; |
Pablo Neira Ayuso | e844a92 | 2013-03-17 23:21:36 +0000 | [diff] [blame] | 2753 | |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 2754 | h = nf_conntrack_find_get(net, &zone, &tuple); |
Pablo Neira Ayuso | e844a92 | 2013-03-17 23:21:36 +0000 | [diff] [blame] | 2755 | if (!h) |
| 2756 | return -ENOENT; |
| 2757 | |
| 2758 | ct = nf_ct_tuplehash_to_ctrack(h); |
| 2759 | c.data = ct; |
| 2760 | |
| 2761 | err = netlink_dump_start(ctnl, skb, nlh, &c); |
| 2762 | nf_ct_put(ct); |
| 2763 | |
| 2764 | return err; |
| 2765 | } |
| 2766 | |
Pablo Neira Ayuso | 7b8002a | 2015-12-15 18:41:56 +0100 | [diff] [blame] | 2767 | static int ctnetlink_get_expect(struct net *net, struct sock *ctnl, |
| 2768 | struct sk_buff *skb, const struct nlmsghdr *nlh, |
| 2769 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2770 | { |
| 2771 | struct nf_conntrack_tuple tuple; |
| 2772 | struct nf_conntrack_expect *exp; |
| 2773 | struct sk_buff *skb2; |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2774 | struct nfgenmsg *nfmsg = nlmsg_data(nlh); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2775 | u_int8_t u3 = nfmsg->nfgen_family; |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 2776 | struct nf_conntrack_zone zone; |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 2777 | int err; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2778 | |
David S. Miller | b8f3ab4 | 2011-01-18 12:40:38 -0800 | [diff] [blame] | 2779 | if (nlh->nlmsg_flags & NLM_F_DUMP) { |
Pablo Neira Ayuso | e844a92 | 2013-03-17 23:21:36 +0000 | [diff] [blame] | 2780 | if (cda[CTA_EXPECT_MASTER]) |
Pablo Neira Ayuso | 7b8002a | 2015-12-15 18:41:56 +0100 | [diff] [blame] | 2781 | return ctnetlink_dump_exp_ct(net, ctnl, skb, nlh, cda); |
Pablo Neira Ayuso | e844a92 | 2013-03-17 23:21:36 +0000 | [diff] [blame] | 2782 | else { |
| 2783 | struct netlink_dump_control c = { |
| 2784 | .dump = ctnetlink_exp_dump_table, |
| 2785 | .done = ctnetlink_exp_done, |
| 2786 | }; |
| 2787 | return netlink_dump_start(ctnl, skb, nlh, &c); |
| 2788 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2789 | } |
| 2790 | |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 2791 | err = ctnetlink_parse_zone(cda[CTA_EXPECT_ZONE], &zone); |
| 2792 | if (err < 0) |
| 2793 | return err; |
| 2794 | |
Pablo Neira Ayuso | 35dba1d | 2011-12-14 12:45:22 +0100 | [diff] [blame] | 2795 | if (cda[CTA_EXPECT_TUPLE]) |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 2796 | err = ctnetlink_parse_tuple(cda, &tuple, CTA_EXPECT_TUPLE, |
| 2797 | u3, NULL); |
Pablo Neira Ayuso | 35dba1d | 2011-12-14 12:45:22 +0100 | [diff] [blame] | 2798 | else if (cda[CTA_EXPECT_MASTER]) |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 2799 | err = ctnetlink_parse_tuple(cda, &tuple, CTA_EXPECT_MASTER, |
| 2800 | u3, NULL); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2801 | else |
| 2802 | return -EINVAL; |
| 2803 | |
| 2804 | if (err < 0) |
| 2805 | return err; |
| 2806 | |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 2807 | exp = nf_ct_expect_find_get(net, &zone, &tuple); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2808 | if (!exp) |
| 2809 | return -ENOENT; |
| 2810 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2811 | if (cda[CTA_EXPECT_ID]) { |
Patrick McHardy | 77236b6 | 2007-12-17 22:29:45 -0800 | [diff] [blame] | 2812 | __be32 id = nla_get_be32(cda[CTA_EXPECT_ID]); |
Patrick McHardy | 3583240 | 2007-09-28 14:41:50 -0700 | [diff] [blame] | 2813 | if (ntohl(id) != (u32)(unsigned long)exp) { |
Patrick McHardy | 6823645 | 2007-07-07 22:30:49 -0700 | [diff] [blame] | 2814 | nf_ct_expect_put(exp); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2815 | return -ENOENT; |
| 2816 | } |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 2817 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2818 | |
| 2819 | err = -ENOMEM; |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2820 | skb2 = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
Pablo Neira Ayuso | 81378f7 | 2011-12-24 19:03:46 +0100 | [diff] [blame] | 2821 | if (skb2 == NULL) { |
| 2822 | nf_ct_expect_put(exp); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2823 | goto out; |
Pablo Neira Ayuso | 81378f7 | 2011-12-24 19:03:46 +0100 | [diff] [blame] | 2824 | } |
Thomas Graf | 4e9b826 | 2006-11-27 09:25:58 -0800 | [diff] [blame] | 2825 | |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 2826 | rcu_read_lock(); |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2827 | err = ctnetlink_exp_fill_info(skb2, NETLINK_CB(skb).portid, |
Pablo Neira Ayuso | 8b0a231 | 2009-06-02 20:03:34 +0200 | [diff] [blame] | 2828 | nlh->nlmsg_seq, IPCTNL_MSG_EXP_NEW, exp); |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 2829 | rcu_read_unlock(); |
Pablo Neira Ayuso | 81378f7 | 2011-12-24 19:03:46 +0100 | [diff] [blame] | 2830 | nf_ct_expect_put(exp); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2831 | if (err <= 0) |
| 2832 | goto free; |
| 2833 | |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2834 | err = netlink_unicast(ctnl, skb2, NETLINK_CB(skb).portid, MSG_DONTWAIT); |
Pablo Neira Ayuso | 81378f7 | 2011-12-24 19:03:46 +0100 | [diff] [blame] | 2835 | if (err < 0) |
| 2836 | goto out; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2837 | |
Pablo Neira Ayuso | 81378f7 | 2011-12-24 19:03:46 +0100 | [diff] [blame] | 2838 | return 0; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2839 | |
| 2840 | free: |
| 2841 | kfree_skb(skb2); |
| 2842 | out: |
Pablo Neira Ayuso | 81378f7 | 2011-12-24 19:03:46 +0100 | [diff] [blame] | 2843 | /* this avoids a loop in nfnetlink. */ |
| 2844 | return err == -EAGAIN ? -ENOBUFS : err; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2845 | } |
| 2846 | |
Pablo Neira Ayuso | 7b8002a | 2015-12-15 18:41:56 +0100 | [diff] [blame] | 2847 | static int ctnetlink_del_expect(struct net *net, struct sock *ctnl, |
| 2848 | struct sk_buff *skb, const struct nlmsghdr *nlh, |
| 2849 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2850 | { |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2851 | struct nf_conntrack_expect *exp; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2852 | struct nf_conntrack_tuple tuple; |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2853 | struct nfgenmsg *nfmsg = nlmsg_data(nlh); |
Sasha Levin | b67bfe0 | 2013-02-27 17:06:00 -0800 | [diff] [blame] | 2854 | struct hlist_node *next; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2855 | u_int8_t u3 = nfmsg->nfgen_family; |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 2856 | struct nf_conntrack_zone zone; |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2857 | unsigned int i; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2858 | int err; |
| 2859 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2860 | if (cda[CTA_EXPECT_TUPLE]) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2861 | /* delete a single expect by tuple */ |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 2862 | err = ctnetlink_parse_zone(cda[CTA_EXPECT_ZONE], &zone); |
| 2863 | if (err < 0) |
| 2864 | return err; |
| 2865 | |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 2866 | err = ctnetlink_parse_tuple(cda, &tuple, CTA_EXPECT_TUPLE, |
| 2867 | u3, NULL); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2868 | if (err < 0) |
| 2869 | return err; |
| 2870 | |
| 2871 | /* bump usage count to 2 */ |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 2872 | exp = nf_ct_expect_find_get(net, &zone, &tuple); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2873 | if (!exp) |
| 2874 | return -ENOENT; |
| 2875 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2876 | if (cda[CTA_EXPECT_ID]) { |
Patrick McHardy | 77236b6 | 2007-12-17 22:29:45 -0800 | [diff] [blame] | 2877 | __be32 id = nla_get_be32(cda[CTA_EXPECT_ID]); |
Patrick McHardy | 3583240 | 2007-09-28 14:41:50 -0700 | [diff] [blame] | 2878 | if (ntohl(id) != (u32)(unsigned long)exp) { |
Patrick McHardy | 6823645 | 2007-07-07 22:30:49 -0700 | [diff] [blame] | 2879 | nf_ct_expect_put(exp); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2880 | return -ENOENT; |
| 2881 | } |
| 2882 | } |
| 2883 | |
| 2884 | /* after list removal, usage count == 1 */ |
Jesper Dangaard Brouer | ca7433d | 2014-03-03 14:46:01 +0100 | [diff] [blame] | 2885 | spin_lock_bh(&nf_conntrack_expect_lock); |
Pablo Neira Ayuso | ebbf41d | 2010-10-19 10:19:06 +0200 | [diff] [blame] | 2886 | if (del_timer(&exp->timeout)) { |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2887 | nf_ct_unlink_expect_report(exp, NETLINK_CB(skb).portid, |
Pablo Neira Ayuso | ebbf41d | 2010-10-19 10:19:06 +0200 | [diff] [blame] | 2888 | nlmsg_report(nlh)); |
| 2889 | nf_ct_expect_put(exp); |
| 2890 | } |
Jesper Dangaard Brouer | ca7433d | 2014-03-03 14:46:01 +0100 | [diff] [blame] | 2891 | spin_unlock_bh(&nf_conntrack_expect_lock); |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 2892 | /* have to put what we 'get' above. |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2893 | * after this line usage count == 0 */ |
Patrick McHardy | 6823645 | 2007-07-07 22:30:49 -0700 | [diff] [blame] | 2894 | nf_ct_expect_put(exp); |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2895 | } else if (cda[CTA_EXPECT_HELP_NAME]) { |
| 2896 | char *name = nla_data(cda[CTA_EXPECT_HELP_NAME]); |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2897 | struct nf_conn_help *m_help; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2898 | |
| 2899 | /* delete all expectations for this helper */ |
Jesper Dangaard Brouer | ca7433d | 2014-03-03 14:46:01 +0100 | [diff] [blame] | 2900 | spin_lock_bh(&nf_conntrack_expect_lock); |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2901 | for (i = 0; i < nf_ct_expect_hsize; i++) { |
Sasha Levin | b67bfe0 | 2013-02-27 17:06:00 -0800 | [diff] [blame] | 2902 | hlist_for_each_entry_safe(exp, next, |
Alexey Dobriyan | 9592a5c | 2010-01-13 16:04:18 +0100 | [diff] [blame] | 2903 | &net->ct.expect_hash[i], |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2904 | hnode) { |
| 2905 | m_help = nfct_help(exp->master); |
Patrick McHardy | 794e687 | 2010-02-03 13:41:29 +0100 | [diff] [blame] | 2906 | if (!strcmp(m_help->helper->name, name) && |
| 2907 | del_timer(&exp->timeout)) { |
Pablo Neira Ayuso | ebbf41d | 2010-10-19 10:19:06 +0200 | [diff] [blame] | 2908 | nf_ct_unlink_expect_report(exp, |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2909 | NETLINK_CB(skb).portid, |
Pablo Neira Ayuso | ebbf41d | 2010-10-19 10:19:06 +0200 | [diff] [blame] | 2910 | nlmsg_report(nlh)); |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2911 | nf_ct_expect_put(exp); |
| 2912 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2913 | } |
| 2914 | } |
Jesper Dangaard Brouer | ca7433d | 2014-03-03 14:46:01 +0100 | [diff] [blame] | 2915 | spin_unlock_bh(&nf_conntrack_expect_lock); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2916 | } else { |
| 2917 | /* This basically means we have to flush everything*/ |
Jesper Dangaard Brouer | ca7433d | 2014-03-03 14:46:01 +0100 | [diff] [blame] | 2918 | spin_lock_bh(&nf_conntrack_expect_lock); |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2919 | for (i = 0; i < nf_ct_expect_hsize; i++) { |
Sasha Levin | b67bfe0 | 2013-02-27 17:06:00 -0800 | [diff] [blame] | 2920 | hlist_for_each_entry_safe(exp, next, |
Alexey Dobriyan | 9592a5c | 2010-01-13 16:04:18 +0100 | [diff] [blame] | 2921 | &net->ct.expect_hash[i], |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2922 | hnode) { |
| 2923 | if (del_timer(&exp->timeout)) { |
Pablo Neira Ayuso | ebbf41d | 2010-10-19 10:19:06 +0200 | [diff] [blame] | 2924 | nf_ct_unlink_expect_report(exp, |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2925 | NETLINK_CB(skb).portid, |
Pablo Neira Ayuso | ebbf41d | 2010-10-19 10:19:06 +0200 | [diff] [blame] | 2926 | nlmsg_report(nlh)); |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2927 | nf_ct_expect_put(exp); |
| 2928 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2929 | } |
| 2930 | } |
Jesper Dangaard Brouer | ca7433d | 2014-03-03 14:46:01 +0100 | [diff] [blame] | 2931 | spin_unlock_bh(&nf_conntrack_expect_lock); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2932 | } |
| 2933 | |
| 2934 | return 0; |
| 2935 | } |
| 2936 | static int |
Patrick McHardy | 3993832 | 2009-08-25 16:07:58 +0200 | [diff] [blame] | 2937 | ctnetlink_change_expect(struct nf_conntrack_expect *x, |
| 2938 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2939 | { |
Kelvie Wong | 9768e1a | 2012-05-02 14:39:24 +0000 | [diff] [blame] | 2940 | if (cda[CTA_EXPECT_TIMEOUT]) { |
| 2941 | if (!del_timer(&x->timeout)) |
| 2942 | return -ETIME; |
| 2943 | |
| 2944 | x->timeout.expires = jiffies + |
| 2945 | ntohl(nla_get_be32(cda[CTA_EXPECT_TIMEOUT])) * HZ; |
| 2946 | add_timer(&x->timeout); |
| 2947 | } |
| 2948 | return 0; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2949 | } |
| 2950 | |
Pablo Neira Ayuso | 076a0ca | 2012-02-05 03:41:52 +0100 | [diff] [blame] | 2951 | static const struct nla_policy exp_nat_nla_policy[CTA_EXPECT_NAT_MAX+1] = { |
| 2952 | [CTA_EXPECT_NAT_DIR] = { .type = NLA_U32 }, |
| 2953 | [CTA_EXPECT_NAT_TUPLE] = { .type = NLA_NESTED }, |
| 2954 | }; |
| 2955 | |
| 2956 | static int |
| 2957 | ctnetlink_parse_expect_nat(const struct nlattr *attr, |
| 2958 | struct nf_conntrack_expect *exp, |
| 2959 | u_int8_t u3) |
| 2960 | { |
| 2961 | #ifdef CONFIG_NF_NAT_NEEDED |
| 2962 | struct nlattr *tb[CTA_EXPECT_NAT_MAX+1]; |
| 2963 | struct nf_conntrack_tuple nat_tuple = {}; |
| 2964 | int err; |
| 2965 | |
Daniel Borkmann | 130ffbc | 2013-06-12 17:54:51 +0200 | [diff] [blame] | 2966 | err = nla_parse_nested(tb, CTA_EXPECT_NAT_MAX, attr, exp_nat_nla_policy); |
| 2967 | if (err < 0) |
| 2968 | return err; |
Pablo Neira Ayuso | 076a0ca | 2012-02-05 03:41:52 +0100 | [diff] [blame] | 2969 | |
| 2970 | if (!tb[CTA_EXPECT_NAT_DIR] || !tb[CTA_EXPECT_NAT_TUPLE]) |
| 2971 | return -EINVAL; |
| 2972 | |
| 2973 | err = ctnetlink_parse_tuple((const struct nlattr * const *)tb, |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 2974 | &nat_tuple, CTA_EXPECT_NAT_TUPLE, |
| 2975 | u3, NULL); |
Pablo Neira Ayuso | 076a0ca | 2012-02-05 03:41:52 +0100 | [diff] [blame] | 2976 | if (err < 0) |
| 2977 | return err; |
| 2978 | |
Patrick McHardy | c7232c9 | 2012-08-26 19:14:06 +0200 | [diff] [blame] | 2979 | exp->saved_addr = nat_tuple.src.u3; |
Pablo Neira Ayuso | 076a0ca | 2012-02-05 03:41:52 +0100 | [diff] [blame] | 2980 | exp->saved_proto = nat_tuple.src.u; |
| 2981 | exp->dir = ntohl(nla_get_be32(tb[CTA_EXPECT_NAT_DIR])); |
| 2982 | |
| 2983 | return 0; |
| 2984 | #else |
| 2985 | return -EOPNOTSUPP; |
| 2986 | #endif |
| 2987 | } |
| 2988 | |
Pablo Neira Ayuso | 0ef71ee | 2013-08-07 19:12:34 +0200 | [diff] [blame] | 2989 | static struct nf_conntrack_expect * |
| 2990 | ctnetlink_alloc_expect(const struct nlattr * const cda[], struct nf_conn *ct, |
| 2991 | struct nf_conntrack_helper *helper, |
| 2992 | struct nf_conntrack_tuple *tuple, |
| 2993 | struct nf_conntrack_tuple *mask) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2994 | { |
Pablo Neira Ayuso | b8c5e52 | 2012-02-05 03:21:12 +0100 | [diff] [blame] | 2995 | u_int32_t class = 0; |
Pablo Neira Ayuso | 0ef71ee | 2013-08-07 19:12:34 +0200 | [diff] [blame] | 2996 | struct nf_conntrack_expect *exp; |
| 2997 | struct nf_conn_help *help; |
| 2998 | int err; |
Pablo Neira Ayuso | 660fdb2 | 2012-02-05 02:34:16 +0100 | [diff] [blame] | 2999 | |
Pablo Neira Ayuso | b8c5e52 | 2012-02-05 03:21:12 +0100 | [diff] [blame] | 3000 | if (cda[CTA_EXPECT_CLASS] && helper) { |
| 3001 | class = ntohl(nla_get_be32(cda[CTA_EXPECT_CLASS])); |
Pablo Neira Ayuso | 0ef71ee | 2013-08-07 19:12:34 +0200 | [diff] [blame] | 3002 | if (class > helper->expect_class_max) |
| 3003 | return ERR_PTR(-EINVAL); |
Pablo Neira Ayuso | b8c5e52 | 2012-02-05 03:21:12 +0100 | [diff] [blame] | 3004 | } |
Patrick McHardy | 6823645 | 2007-07-07 22:30:49 -0700 | [diff] [blame] | 3005 | exp = nf_ct_expect_alloc(ct); |
Pablo Neira Ayuso | 0ef71ee | 2013-08-07 19:12:34 +0200 | [diff] [blame] | 3006 | if (!exp) |
| 3007 | return ERR_PTR(-ENOMEM); |
| 3008 | |
Pablo Neira Ayuso | bc01befd | 2010-09-28 21:06:34 +0200 | [diff] [blame] | 3009 | help = nfct_help(ct); |
| 3010 | if (!help) { |
| 3011 | if (!cda[CTA_EXPECT_TIMEOUT]) { |
| 3012 | err = -EINVAL; |
Jesper Juhl | 1310b955 | 2012-12-26 11:49:40 +0000 | [diff] [blame] | 3013 | goto err_out; |
Pablo Neira Ayuso | bc01befd | 2010-09-28 21:06:34 +0200 | [diff] [blame] | 3014 | } |
| 3015 | exp->timeout.expires = |
| 3016 | jiffies + ntohl(nla_get_be32(cda[CTA_EXPECT_TIMEOUT])) * HZ; |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 3017 | |
Pablo Neira Ayuso | bc01befd | 2010-09-28 21:06:34 +0200 | [diff] [blame] | 3018 | exp->flags = NF_CT_EXPECT_USERSPACE; |
| 3019 | if (cda[CTA_EXPECT_FLAGS]) { |
| 3020 | exp->flags |= |
| 3021 | ntohl(nla_get_be32(cda[CTA_EXPECT_FLAGS])); |
| 3022 | } |
| 3023 | } else { |
| 3024 | if (cda[CTA_EXPECT_FLAGS]) { |
| 3025 | exp->flags = ntohl(nla_get_be32(cda[CTA_EXPECT_FLAGS])); |
| 3026 | exp->flags &= ~NF_CT_EXPECT_USERSPACE; |
| 3027 | } else |
| 3028 | exp->flags = 0; |
| 3029 | } |
Pablo Neira Ayuso | 544d5c7 | 2012-02-05 03:44:51 +0100 | [diff] [blame] | 3030 | if (cda[CTA_EXPECT_FN]) { |
| 3031 | const char *name = nla_data(cda[CTA_EXPECT_FN]); |
| 3032 | struct nf_ct_helper_expectfn *expfn; |
| 3033 | |
| 3034 | expfn = nf_ct_helper_expectfn_find_by_name(name); |
| 3035 | if (expfn == NULL) { |
| 3036 | err = -EINVAL; |
| 3037 | goto err_out; |
| 3038 | } |
| 3039 | exp->expectfn = expfn->expectfn; |
| 3040 | } else |
| 3041 | exp->expectfn = NULL; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3042 | |
Pablo Neira Ayuso | b8c5e52 | 2012-02-05 03:21:12 +0100 | [diff] [blame] | 3043 | exp->class = class; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3044 | exp->master = ct; |
Pablo Neira Ayuso | 660fdb2 | 2012-02-05 02:34:16 +0100 | [diff] [blame] | 3045 | exp->helper = helper; |
Pablo Neira Ayuso | 0ef71ee | 2013-08-07 19:12:34 +0200 | [diff] [blame] | 3046 | exp->tuple = *tuple; |
| 3047 | exp->mask.src.u3 = mask->src.u3; |
| 3048 | exp->mask.src.u.all = mask->src.u.all; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3049 | |
Pablo Neira Ayuso | 076a0ca | 2012-02-05 03:41:52 +0100 | [diff] [blame] | 3050 | if (cda[CTA_EXPECT_NAT]) { |
| 3051 | err = ctnetlink_parse_expect_nat(cda[CTA_EXPECT_NAT], |
Pablo Neira Ayuso | 0ef71ee | 2013-08-07 19:12:34 +0200 | [diff] [blame] | 3052 | exp, nf_ct_l3num(ct)); |
Pablo Neira Ayuso | 076a0ca | 2012-02-05 03:41:52 +0100 | [diff] [blame] | 3053 | if (err < 0) |
| 3054 | goto err_out; |
| 3055 | } |
Pablo Neira Ayuso | 0ef71ee | 2013-08-07 19:12:34 +0200 | [diff] [blame] | 3056 | return exp; |
Pablo Neira Ayuso | 076a0ca | 2012-02-05 03:41:52 +0100 | [diff] [blame] | 3057 | err_out: |
Patrick McHardy | 6823645 | 2007-07-07 22:30:49 -0700 | [diff] [blame] | 3058 | nf_ct_expect_put(exp); |
Pablo Neira Ayuso | 0ef71ee | 2013-08-07 19:12:34 +0200 | [diff] [blame] | 3059 | return ERR_PTR(err); |
| 3060 | } |
| 3061 | |
| 3062 | static int |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 3063 | ctnetlink_create_expect(struct net *net, |
| 3064 | const struct nf_conntrack_zone *zone, |
Pablo Neira Ayuso | 0ef71ee | 2013-08-07 19:12:34 +0200 | [diff] [blame] | 3065 | const struct nlattr * const cda[], |
| 3066 | u_int8_t u3, u32 portid, int report) |
| 3067 | { |
| 3068 | struct nf_conntrack_tuple tuple, mask, master_tuple; |
| 3069 | struct nf_conntrack_tuple_hash *h = NULL; |
| 3070 | struct nf_conntrack_helper *helper = NULL; |
| 3071 | struct nf_conntrack_expect *exp; |
| 3072 | struct nf_conn *ct; |
| 3073 | int err; |
| 3074 | |
| 3075 | /* caller guarantees that those three CTA_EXPECT_* exist */ |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 3076 | err = ctnetlink_parse_tuple(cda, &tuple, CTA_EXPECT_TUPLE, |
| 3077 | u3, NULL); |
Pablo Neira Ayuso | 0ef71ee | 2013-08-07 19:12:34 +0200 | [diff] [blame] | 3078 | if (err < 0) |
| 3079 | return err; |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 3080 | err = ctnetlink_parse_tuple(cda, &mask, CTA_EXPECT_MASK, |
| 3081 | u3, NULL); |
Pablo Neira Ayuso | 0ef71ee | 2013-08-07 19:12:34 +0200 | [diff] [blame] | 3082 | if (err < 0) |
| 3083 | return err; |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 3084 | err = ctnetlink_parse_tuple(cda, &master_tuple, CTA_EXPECT_MASTER, |
| 3085 | u3, NULL); |
Pablo Neira Ayuso | 0ef71ee | 2013-08-07 19:12:34 +0200 | [diff] [blame] | 3086 | if (err < 0) |
| 3087 | return err; |
| 3088 | |
| 3089 | /* Look for master conntrack of this expectation */ |
| 3090 | h = nf_conntrack_find_get(net, zone, &master_tuple); |
| 3091 | if (!h) |
| 3092 | return -ENOENT; |
| 3093 | ct = nf_ct_tuplehash_to_ctrack(h); |
| 3094 | |
| 3095 | if (cda[CTA_EXPECT_HELP_NAME]) { |
| 3096 | const char *helpname = nla_data(cda[CTA_EXPECT_HELP_NAME]); |
| 3097 | |
| 3098 | helper = __nf_conntrack_helper_find(helpname, u3, |
| 3099 | nf_ct_protonum(ct)); |
| 3100 | if (helper == NULL) { |
| 3101 | #ifdef CONFIG_MODULES |
| 3102 | if (request_module("nfct-helper-%s", helpname) < 0) { |
| 3103 | err = -EOPNOTSUPP; |
| 3104 | goto err_ct; |
| 3105 | } |
| 3106 | helper = __nf_conntrack_helper_find(helpname, u3, |
| 3107 | nf_ct_protonum(ct)); |
| 3108 | if (helper) { |
| 3109 | err = -EAGAIN; |
| 3110 | goto err_ct; |
| 3111 | } |
| 3112 | #endif |
| 3113 | err = -EOPNOTSUPP; |
| 3114 | goto err_ct; |
| 3115 | } |
| 3116 | } |
| 3117 | |
| 3118 | exp = ctnetlink_alloc_expect(cda, ct, helper, &tuple, &mask); |
| 3119 | if (IS_ERR(exp)) { |
| 3120 | err = PTR_ERR(exp); |
| 3121 | goto err_ct; |
| 3122 | } |
| 3123 | |
| 3124 | err = nf_ct_expect_related_report(exp, portid, report); |
Pablo Neira Ayuso | 0ef71ee | 2013-08-07 19:12:34 +0200 | [diff] [blame] | 3125 | nf_ct_expect_put(exp); |
| 3126 | err_ct: |
| 3127 | nf_ct_put(ct); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3128 | return err; |
| 3129 | } |
| 3130 | |
Pablo Neira Ayuso | 7b8002a | 2015-12-15 18:41:56 +0100 | [diff] [blame] | 3131 | static int ctnetlink_new_expect(struct net *net, struct sock *ctnl, |
| 3132 | struct sk_buff *skb, const struct nlmsghdr *nlh, |
| 3133 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3134 | { |
| 3135 | struct nf_conntrack_tuple tuple; |
| 3136 | struct nf_conntrack_expect *exp; |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 3137 | struct nfgenmsg *nfmsg = nlmsg_data(nlh); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3138 | u_int8_t u3 = nfmsg->nfgen_family; |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 3139 | struct nf_conntrack_zone zone; |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 3140 | int err; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3141 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 3142 | if (!cda[CTA_EXPECT_TUPLE] |
| 3143 | || !cda[CTA_EXPECT_MASK] |
| 3144 | || !cda[CTA_EXPECT_MASTER]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3145 | return -EINVAL; |
| 3146 | |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 3147 | err = ctnetlink_parse_zone(cda[CTA_EXPECT_ZONE], &zone); |
| 3148 | if (err < 0) |
| 3149 | return err; |
| 3150 | |
Daniel Borkmann | deedb59 | 2015-08-14 16:03:39 +0200 | [diff] [blame] | 3151 | err = ctnetlink_parse_tuple(cda, &tuple, CTA_EXPECT_TUPLE, |
| 3152 | u3, NULL); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3153 | if (err < 0) |
| 3154 | return err; |
| 3155 | |
Jesper Dangaard Brouer | ca7433d | 2014-03-03 14:46:01 +0100 | [diff] [blame] | 3156 | spin_lock_bh(&nf_conntrack_expect_lock); |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 3157 | exp = __nf_ct_expect_find(net, &zone, &tuple); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3158 | if (!exp) { |
Jesper Dangaard Brouer | ca7433d | 2014-03-03 14:46:01 +0100 | [diff] [blame] | 3159 | spin_unlock_bh(&nf_conntrack_expect_lock); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3160 | err = -ENOENT; |
Pablo Neira Ayuso | 19abb7b | 2008-11-18 11:56:20 +0100 | [diff] [blame] | 3161 | if (nlh->nlmsg_flags & NLM_F_CREATE) { |
Daniel Borkmann | 308ac91 | 2015-08-08 21:40:01 +0200 | [diff] [blame] | 3162 | err = ctnetlink_create_expect(net, &zone, cda, u3, |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 3163 | NETLINK_CB(skb).portid, |
Pablo Neira Ayuso | 19abb7b | 2008-11-18 11:56:20 +0100 | [diff] [blame] | 3164 | nlmsg_report(nlh)); |
| 3165 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3166 | return err; |
| 3167 | } |
| 3168 | |
| 3169 | err = -EEXIST; |
| 3170 | if (!(nlh->nlmsg_flags & NLM_F_EXCL)) |
| 3171 | err = ctnetlink_change_expect(exp, cda); |
Jesper Dangaard Brouer | ca7433d | 2014-03-03 14:46:01 +0100 | [diff] [blame] | 3172 | spin_unlock_bh(&nf_conntrack_expect_lock); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3173 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3174 | return err; |
| 3175 | } |
| 3176 | |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 3177 | static int |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 3178 | 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] | 3179 | const struct ip_conntrack_stat *st) |
| 3180 | { |
| 3181 | struct nlmsghdr *nlh; |
| 3182 | struct nfgenmsg *nfmsg; |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 3183 | unsigned int flags = portid ? NLM_F_MULTI : 0, event; |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 3184 | |
| 3185 | event = (NFNL_SUBSYS_CTNETLINK << 8 | IPCTNL_MSG_EXP_GET_STATS_CPU); |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 3186 | nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags); |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 3187 | if (nlh == NULL) |
| 3188 | goto nlmsg_failure; |
| 3189 | |
| 3190 | nfmsg = nlmsg_data(nlh); |
| 3191 | nfmsg->nfgen_family = AF_UNSPEC; |
| 3192 | nfmsg->version = NFNETLINK_V0; |
| 3193 | nfmsg->res_id = htons(cpu); |
| 3194 | |
| 3195 | if (nla_put_be32(skb, CTA_STATS_EXP_NEW, htonl(st->expect_new)) || |
| 3196 | nla_put_be32(skb, CTA_STATS_EXP_CREATE, htonl(st->expect_create)) || |
| 3197 | nla_put_be32(skb, CTA_STATS_EXP_DELETE, htonl(st->expect_delete))) |
| 3198 | goto nla_put_failure; |
| 3199 | |
| 3200 | nlmsg_end(skb, nlh); |
| 3201 | return skb->len; |
| 3202 | |
| 3203 | nla_put_failure: |
| 3204 | nlmsg_failure: |
| 3205 | nlmsg_cancel(skb, nlh); |
| 3206 | return -1; |
| 3207 | } |
| 3208 | |
| 3209 | static int |
| 3210 | ctnetlink_exp_stat_cpu_dump(struct sk_buff *skb, struct netlink_callback *cb) |
| 3211 | { |
| 3212 | int cpu; |
| 3213 | struct net *net = sock_net(skb->sk); |
| 3214 | |
| 3215 | if (cb->args[0] == nr_cpu_ids) |
| 3216 | return 0; |
| 3217 | |
| 3218 | for (cpu = cb->args[0]; cpu < nr_cpu_ids; cpu++) { |
| 3219 | const struct ip_conntrack_stat *st; |
| 3220 | |
| 3221 | if (!cpu_possible(cpu)) |
| 3222 | continue; |
| 3223 | |
| 3224 | st = per_cpu_ptr(net->ct.stat, cpu); |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 3225 | 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] | 3226 | cb->nlh->nlmsg_seq, |
| 3227 | cpu, st) < 0) |
| 3228 | break; |
| 3229 | } |
| 3230 | cb->args[0] = cpu; |
| 3231 | |
| 3232 | return skb->len; |
| 3233 | } |
| 3234 | |
Pablo Neira Ayuso | 7b8002a | 2015-12-15 18:41:56 +0100 | [diff] [blame] | 3235 | static int ctnetlink_stat_exp_cpu(struct net *net, struct sock *ctnl, |
| 3236 | struct sk_buff *skb, |
| 3237 | const struct nlmsghdr *nlh, |
| 3238 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 3239 | { |
| 3240 | if (nlh->nlmsg_flags & NLM_F_DUMP) { |
| 3241 | struct netlink_dump_control c = { |
| 3242 | .dump = ctnetlink_exp_stat_cpu_dump, |
| 3243 | }; |
| 3244 | return netlink_dump_start(ctnl, skb, nlh, &c); |
| 3245 | } |
| 3246 | |
| 3247 | return 0; |
| 3248 | } |
| 3249 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3250 | #ifdef CONFIG_NF_CONNTRACK_EVENTS |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 3251 | static struct nf_ct_event_notifier ctnl_notifier = { |
| 3252 | .fcn = ctnetlink_conntrack_event, |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3253 | }; |
| 3254 | |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 3255 | static struct nf_exp_event_notifier ctnl_notifier_exp = { |
| 3256 | .fcn = ctnetlink_expect_event, |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3257 | }; |
| 3258 | #endif |
| 3259 | |
Patrick McHardy | 7c8d4cb | 2007-09-28 14:15:45 -0700 | [diff] [blame] | 3260 | static const struct nfnl_callback ctnl_cb[IPCTNL_MSG_MAX] = { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3261 | [IPCTNL_MSG_CT_NEW] = { .call = ctnetlink_new_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] = { .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 | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3267 | [IPCTNL_MSG_CT_DELETE] = { .call = ctnetlink_del_conntrack, |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 3268 | .attr_count = CTA_MAX, |
| 3269 | .policy = ct_nla_policy }, |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3270 | [IPCTNL_MSG_CT_GET_CTRZERO] = { .call = ctnetlink_get_conntrack, |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 3271 | .attr_count = CTA_MAX, |
| 3272 | .policy = ct_nla_policy }, |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 3273 | [IPCTNL_MSG_CT_GET_STATS_CPU] = { .call = ctnetlink_stat_ct_cpu }, |
| 3274 | [IPCTNL_MSG_CT_GET_STATS] = { .call = ctnetlink_stat_ct }, |
Pablo Neira Ayuso | d871bef | 2012-11-27 14:49:42 +0100 | [diff] [blame] | 3275 | [IPCTNL_MSG_CT_GET_DYING] = { .call = ctnetlink_get_ct_dying }, |
| 3276 | [IPCTNL_MSG_CT_GET_UNCONFIRMED] = { .call = ctnetlink_get_ct_unconfirmed }, |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3277 | }; |
| 3278 | |
Patrick McHardy | 7c8d4cb | 2007-09-28 14:15:45 -0700 | [diff] [blame] | 3279 | 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] | 3280 | [IPCTNL_MSG_EXP_GET] = { .call = ctnetlink_get_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 | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3283 | [IPCTNL_MSG_EXP_NEW] = { .call = ctnetlink_new_expect, |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 3284 | .attr_count = CTA_EXPECT_MAX, |
| 3285 | .policy = exp_nla_policy }, |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3286 | [IPCTNL_MSG_EXP_DELETE] = { .call = ctnetlink_del_expect, |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 3287 | .attr_count = CTA_EXPECT_MAX, |
| 3288 | .policy = exp_nla_policy }, |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 3289 | [IPCTNL_MSG_EXP_GET_STATS_CPU] = { .call = ctnetlink_stat_exp_cpu }, |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3290 | }; |
| 3291 | |
Patrick McHardy | 7c8d4cb | 2007-09-28 14:15:45 -0700 | [diff] [blame] | 3292 | static const struct nfnetlink_subsystem ctnl_subsys = { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3293 | .name = "conntrack", |
| 3294 | .subsys_id = NFNL_SUBSYS_CTNETLINK, |
| 3295 | .cb_count = IPCTNL_MSG_MAX, |
| 3296 | .cb = ctnl_cb, |
| 3297 | }; |
| 3298 | |
Patrick McHardy | 7c8d4cb | 2007-09-28 14:15:45 -0700 | [diff] [blame] | 3299 | static const struct nfnetlink_subsystem ctnl_exp_subsys = { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3300 | .name = "conntrack_expect", |
| 3301 | .subsys_id = NFNL_SUBSYS_CTNETLINK_EXP, |
| 3302 | .cb_count = IPCTNL_MSG_EXP_MAX, |
| 3303 | .cb = ctnl_exp_cb, |
| 3304 | }; |
| 3305 | |
Patrick McHardy | d2483dd | 2006-12-02 22:06:05 -0800 | [diff] [blame] | 3306 | MODULE_ALIAS("ip_conntrack_netlink"); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3307 | MODULE_ALIAS_NFNL_SUBSYS(NFNL_SUBSYS_CTNETLINK); |
Pablo Neira Ayuso | 34f9a2e | 2006-02-04 02:11:41 -0800 | [diff] [blame] | 3308 | MODULE_ALIAS_NFNL_SUBSYS(NFNL_SUBSYS_CTNETLINK_EXP); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3309 | |
Pablo Neira Ayuso | 70e9942 | 2011-11-22 00:16:51 +0100 | [diff] [blame] | 3310 | static int __net_init ctnetlink_net_init(struct net *net) |
| 3311 | { |
| 3312 | #ifdef CONFIG_NF_CONNTRACK_EVENTS |
| 3313 | int ret; |
| 3314 | |
| 3315 | ret = nf_conntrack_register_notifier(net, &ctnl_notifier); |
| 3316 | if (ret < 0) { |
| 3317 | pr_err("ctnetlink_init: cannot register notifier.\n"); |
| 3318 | goto err_out; |
| 3319 | } |
| 3320 | |
| 3321 | ret = nf_ct_expect_register_notifier(net, &ctnl_notifier_exp); |
| 3322 | if (ret < 0) { |
| 3323 | pr_err("ctnetlink_init: cannot expect register notifier.\n"); |
| 3324 | goto err_unreg_notifier; |
| 3325 | } |
| 3326 | #endif |
| 3327 | return 0; |
| 3328 | |
| 3329 | #ifdef CONFIG_NF_CONNTRACK_EVENTS |
| 3330 | err_unreg_notifier: |
| 3331 | nf_conntrack_unregister_notifier(net, &ctnl_notifier); |
| 3332 | err_out: |
| 3333 | return ret; |
| 3334 | #endif |
| 3335 | } |
| 3336 | |
| 3337 | static void ctnetlink_net_exit(struct net *net) |
| 3338 | { |
| 3339 | #ifdef CONFIG_NF_CONNTRACK_EVENTS |
| 3340 | nf_ct_expect_unregister_notifier(net, &ctnl_notifier_exp); |
| 3341 | nf_conntrack_unregister_notifier(net, &ctnl_notifier); |
| 3342 | #endif |
| 3343 | } |
| 3344 | |
| 3345 | static void __net_exit ctnetlink_net_exit_batch(struct list_head *net_exit_list) |
| 3346 | { |
| 3347 | struct net *net; |
| 3348 | |
| 3349 | list_for_each_entry(net, net_exit_list, exit_list) |
| 3350 | ctnetlink_net_exit(net); |
| 3351 | } |
| 3352 | |
| 3353 | static struct pernet_operations ctnetlink_net_ops = { |
| 3354 | .init = ctnetlink_net_init, |
| 3355 | .exit_batch = ctnetlink_net_exit_batch, |
| 3356 | }; |
| 3357 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3358 | static int __init ctnetlink_init(void) |
| 3359 | { |
| 3360 | int ret; |
| 3361 | |
Stephen Hemminger | 654d0fb | 2010-05-13 15:02:08 +0200 | [diff] [blame] | 3362 | pr_info("ctnetlink v%s: registering with nfnetlink.\n", version); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3363 | ret = nfnetlink_subsys_register(&ctnl_subsys); |
| 3364 | if (ret < 0) { |
Stephen Hemminger | 654d0fb | 2010-05-13 15:02:08 +0200 | [diff] [blame] | 3365 | pr_err("ctnetlink_init: cannot register with nfnetlink.\n"); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3366 | goto err_out; |
| 3367 | } |
| 3368 | |
| 3369 | ret = nfnetlink_subsys_register(&ctnl_exp_subsys); |
| 3370 | if (ret < 0) { |
Stephen Hemminger | 654d0fb | 2010-05-13 15:02:08 +0200 | [diff] [blame] | 3371 | pr_err("ctnetlink_init: cannot register exp with nfnetlink.\n"); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3372 | goto err_unreg_subsys; |
| 3373 | } |
| 3374 | |
Julia Lawall | ef6acf6 | 2012-08-29 06:49:16 +0000 | [diff] [blame] | 3375 | ret = register_pernet_subsys(&ctnetlink_net_ops); |
| 3376 | if (ret < 0) { |
Pablo Neira Ayuso | 70e9942 | 2011-11-22 00:16:51 +0100 | [diff] [blame] | 3377 | pr_err("ctnetlink_init: cannot register pernet operations\n"); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3378 | goto err_unreg_exp_subsys; |
| 3379 | } |
Ken-ichirou MATSUZAWA | 83f3e94 | 2015-10-05 11:48:47 +0900 | [diff] [blame] | 3380 | #ifdef CONFIG_NETFILTER_NETLINK_GLUE_CT |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 3381 | /* setup interaction between nf_queue and nf_conntrack_netlink. */ |
Ken-ichirou MATSUZAWA | a4b4766 | 2015-10-05 11:47:13 +0900 | [diff] [blame] | 3382 | RCU_INIT_POINTER(nfnl_ct_hook, &ctnetlink_glue_hook); |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 3383 | #endif |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3384 | return 0; |
| 3385 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3386 | err_unreg_exp_subsys: |
| 3387 | nfnetlink_subsys_unregister(&ctnl_exp_subsys); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3388 | err_unreg_subsys: |
| 3389 | nfnetlink_subsys_unregister(&ctnl_subsys); |
| 3390 | err_out: |
| 3391 | return ret; |
| 3392 | } |
| 3393 | |
| 3394 | static void __exit ctnetlink_exit(void) |
| 3395 | { |
Stephen Hemminger | 654d0fb | 2010-05-13 15:02:08 +0200 | [diff] [blame] | 3396 | pr_info("ctnetlink: unregistering from nfnetlink.\n"); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3397 | |
Pablo Neira Ayuso | 70e9942 | 2011-11-22 00:16:51 +0100 | [diff] [blame] | 3398 | unregister_pernet_subsys(&ctnetlink_net_ops); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3399 | nfnetlink_subsys_unregister(&ctnl_exp_subsys); |
| 3400 | nfnetlink_subsys_unregister(&ctnl_subsys); |
Ken-ichirou MATSUZAWA | 83f3e94 | 2015-10-05 11:48:47 +0900 | [diff] [blame] | 3401 | #ifdef CONFIG_NETFILTER_NETLINK_GLUE_CT |
Ken-ichirou MATSUZAWA | a4b4766 | 2015-10-05 11:47:13 +0900 | [diff] [blame] | 3402 | RCU_INIT_POINTER(nfnl_ct_hook, NULL); |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 3403 | #endif |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 3404 | } |
| 3405 | |
| 3406 | module_init(ctnetlink_init); |
| 3407 | module_exit(ctnetlink_exit); |