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> |
| 40 | #include <net/netfilter/nf_conntrack_l3proto.h> |
Martin Josefsson | 605dcad | 2006-11-29 02:35:06 +0100 | [diff] [blame] | 41 | #include <net/netfilter/nf_conntrack_l4proto.h> |
Jozsef Kadlecsik | 5b1158e | 2006-12-02 22:07:13 -0800 | [diff] [blame] | 42 | #include <net/netfilter/nf_conntrack_tuple.h> |
Krzysztof Piotr Oledzki | 5840157 | 2008-07-21 10:01:34 -0700 | [diff] [blame] | 43 | #include <net/netfilter/nf_conntrack_acct.h> |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 44 | #include <net/netfilter/nf_conntrack_zones.h> |
Pablo Neira Ayuso | a992ca2 | 2011-01-19 16:00:07 +0100 | [diff] [blame] | 45 | #include <net/netfilter/nf_conntrack_timestamp.h> |
Florian Westphal | c539f01 | 2013-01-11 06:30:44 +0000 | [diff] [blame] | 46 | #include <net/netfilter/nf_conntrack_labels.h> |
Jozsef Kadlecsik | 5b1158e | 2006-12-02 22:07:13 -0800 | [diff] [blame] | 47 | #ifdef CONFIG_NF_NAT_NEEDED |
| 48 | #include <net/netfilter/nf_nat_core.h> |
Patrick McHardy | c7232c9 | 2012-08-26 19:14:06 +0200 | [diff] [blame] | 49 | #include <net/netfilter/nf_nat_l4proto.h> |
Pablo Neira Ayuso | 8c88f87 | 2012-06-07 13:31:25 +0200 | [diff] [blame] | 50 | #include <net/netfilter/nf_nat_helper.h> |
Jozsef Kadlecsik | 5b1158e | 2006-12-02 22:07:13 -0800 | [diff] [blame] | 51 | #endif |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 52 | |
| 53 | #include <linux/netfilter/nfnetlink.h> |
| 54 | #include <linux/netfilter/nfnetlink_conntrack.h> |
| 55 | |
| 56 | MODULE_LICENSE("GPL"); |
| 57 | |
Harald Welte | dc808fe | 2006-03-20 17:56:32 -0800 | [diff] [blame] | 58 | static char __initdata version[] = "0.93"; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 59 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 60 | static inline int |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 61 | ctnetlink_dump_tuples_proto(struct sk_buff *skb, |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 62 | const struct nf_conntrack_tuple *tuple, |
Martin Josefsson | 605dcad | 2006-11-29 02:35:06 +0100 | [diff] [blame] | 63 | struct nf_conntrack_l4proto *l4proto) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 64 | { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 65 | int ret = 0; |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 66 | struct nlattr *nest_parms; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 67 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 68 | nest_parms = nla_nest_start(skb, CTA_TUPLE_PROTO | NLA_F_NESTED); |
| 69 | if (!nest_parms) |
| 70 | goto nla_put_failure; |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 71 | if (nla_put_u8(skb, CTA_PROTO_NUM, tuple->dst.protonum)) |
| 72 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 73 | |
Patrick McHardy | fdf7083 | 2007-09-28 14:37:41 -0700 | [diff] [blame] | 74 | if (likely(l4proto->tuple_to_nlattr)) |
| 75 | ret = l4proto->tuple_to_nlattr(skb, tuple); |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 76 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 77 | nla_nest_end(skb, nest_parms); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 78 | |
| 79 | return ret; |
| 80 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 81 | nla_put_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 82 | return -1; |
| 83 | } |
| 84 | |
| 85 | static inline int |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 86 | ctnetlink_dump_tuples_ip(struct sk_buff *skb, |
| 87 | const struct nf_conntrack_tuple *tuple, |
| 88 | struct nf_conntrack_l3proto *l3proto) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 89 | { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 90 | int ret = 0; |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 91 | struct nlattr *nest_parms; |
| 92 | |
| 93 | nest_parms = nla_nest_start(skb, CTA_TUPLE_IP | NLA_F_NESTED); |
| 94 | if (!nest_parms) |
| 95 | goto nla_put_failure; |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 96 | |
Patrick McHardy | fdf7083 | 2007-09-28 14:37:41 -0700 | [diff] [blame] | 97 | if (likely(l3proto->tuple_to_nlattr)) |
| 98 | ret = l3proto->tuple_to_nlattr(skb, tuple); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 99 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 100 | nla_nest_end(skb, nest_parms); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 101 | |
| 102 | return ret; |
| 103 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 104 | nla_put_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 105 | return -1; |
| 106 | } |
| 107 | |
Ilpo Järvinen | bb5cf80 | 2008-01-05 23:11:31 -0800 | [diff] [blame] | 108 | static int |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 109 | ctnetlink_dump_tuples(struct sk_buff *skb, |
| 110 | const struct nf_conntrack_tuple *tuple) |
| 111 | { |
| 112 | int ret; |
| 113 | struct nf_conntrack_l3proto *l3proto; |
Martin Josefsson | 605dcad | 2006-11-29 02:35:06 +0100 | [diff] [blame] | 114 | struct nf_conntrack_l4proto *l4proto; |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 115 | |
Hans Schillstrom | 3b988ec | 2012-03-05 02:24:29 +0000 | [diff] [blame] | 116 | rcu_read_lock(); |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 117 | l3proto = __nf_ct_l3proto_find(tuple->src.l3num); |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 118 | ret = ctnetlink_dump_tuples_ip(skb, tuple, l3proto); |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 119 | |
Hans Schillstrom | 3b988ec | 2012-03-05 02:24:29 +0000 | [diff] [blame] | 120 | if (ret >= 0) { |
| 121 | l4proto = __nf_ct_l4proto_find(tuple->src.l3num, |
| 122 | tuple->dst.protonum); |
| 123 | ret = ctnetlink_dump_tuples_proto(skb, tuple, l4proto); |
| 124 | } |
| 125 | rcu_read_unlock(); |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 126 | return ret; |
| 127 | } |
| 128 | |
| 129 | static inline int |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 130 | ctnetlink_dump_status(struct sk_buff *skb, const struct nf_conn *ct) |
| 131 | { |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 132 | if (nla_put_be32(skb, CTA_STATUS, htonl(ct->status))) |
| 133 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 134 | return 0; |
| 135 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 136 | nla_put_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 137 | return -1; |
| 138 | } |
| 139 | |
| 140 | static inline int |
| 141 | ctnetlink_dump_timeout(struct sk_buff *skb, const struct nf_conn *ct) |
| 142 | { |
Xi Wang | c121638 | 2011-12-30 10:40:17 -0500 | [diff] [blame] | 143 | long timeout = ((long)ct->timeout.expires - (long)jiffies) / HZ; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 144 | |
Patrick McHardy | 77236b6 | 2007-12-17 22:29:45 -0800 | [diff] [blame] | 145 | if (timeout < 0) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 146 | timeout = 0; |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 147 | |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 148 | if (nla_put_be32(skb, CTA_TIMEOUT, htonl(timeout))) |
| 149 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 150 | return 0; |
| 151 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 152 | nla_put_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 153 | return -1; |
| 154 | } |
| 155 | |
| 156 | static inline int |
Patrick McHardy | 440f0d5 | 2009-06-10 14:32:47 +0200 | [diff] [blame] | 157 | ctnetlink_dump_protoinfo(struct sk_buff *skb, struct nf_conn *ct) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 158 | { |
Patrick McHardy | 5e8fbe2 | 2008-04-14 11:15:52 +0200 | [diff] [blame] | 159 | struct nf_conntrack_l4proto *l4proto; |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 160 | struct nlattr *nest_proto; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 161 | int ret; |
| 162 | |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 163 | l4proto = __nf_ct_l4proto_find(nf_ct_l3num(ct), nf_ct_protonum(ct)); |
| 164 | if (!l4proto->to_nlattr) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 165 | return 0; |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 166 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 167 | nest_proto = nla_nest_start(skb, CTA_PROTOINFO | NLA_F_NESTED); |
| 168 | if (!nest_proto) |
| 169 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 170 | |
Patrick McHardy | fdf7083 | 2007-09-28 14:37:41 -0700 | [diff] [blame] | 171 | ret = l4proto->to_nlattr(skb, nest_proto, ct); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 172 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 173 | nla_nest_end(skb, nest_proto); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 174 | |
| 175 | return ret; |
| 176 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 177 | nla_put_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 178 | return -1; |
| 179 | } |
| 180 | |
| 181 | static inline int |
| 182 | ctnetlink_dump_helpinfo(struct sk_buff *skb, const struct nf_conn *ct) |
| 183 | { |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 184 | struct nlattr *nest_helper; |
Harald Welte | dc808fe | 2006-03-20 17:56:32 -0800 | [diff] [blame] | 185 | const struct nf_conn_help *help = nfct_help(ct); |
Patrick McHarrdy | 3c158f7 | 2007-06-05 12:55:27 -0700 | [diff] [blame] | 186 | struct nf_conntrack_helper *helper; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 187 | |
Patrick McHarrdy | 3c158f7 | 2007-06-05 12:55:27 -0700 | [diff] [blame] | 188 | if (!help) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 189 | return 0; |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 190 | |
Patrick McHarrdy | 3c158f7 | 2007-06-05 12:55:27 -0700 | [diff] [blame] | 191 | helper = rcu_dereference(help->helper); |
| 192 | if (!helper) |
| 193 | goto out; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 194 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 195 | nest_helper = nla_nest_start(skb, CTA_HELP | NLA_F_NESTED); |
| 196 | if (!nest_helper) |
| 197 | goto nla_put_failure; |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 198 | if (nla_put_string(skb, CTA_HELP_NAME, helper->name)) |
| 199 | goto nla_put_failure; |
Patrick McHarrdy | 3c158f7 | 2007-06-05 12:55:27 -0700 | [diff] [blame] | 200 | |
Patrick McHardy | fdf7083 | 2007-09-28 14:37:41 -0700 | [diff] [blame] | 201 | if (helper->to_nlattr) |
| 202 | helper->to_nlattr(skb, ct); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 203 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 204 | nla_nest_end(skb, nest_helper); |
Patrick McHarrdy | 3c158f7 | 2007-06-05 12:55:27 -0700 | [diff] [blame] | 205 | out: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 206 | return 0; |
| 207 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 208 | nla_put_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 209 | return -1; |
| 210 | } |
| 211 | |
Ilpo Järvinen | bb5cf80 | 2008-01-05 23:11:31 -0800 | [diff] [blame] | 212 | static int |
Pablo Neira Ayuso | 80e60e6 | 2011-12-24 14:11:39 +0100 | [diff] [blame] | 213 | dump_counters(struct sk_buff *skb, u64 pkts, u64 bytes, |
| 214 | enum ip_conntrack_dir dir) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 215 | { |
| 216 | enum ctattr_type type = dir ? CTA_COUNTERS_REPLY: CTA_COUNTERS_ORIG; |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 217 | struct nlattr *nest_count; |
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 | nest_count = nla_nest_start(skb, type | NLA_F_NESTED); |
| 220 | if (!nest_count) |
| 221 | goto nla_put_failure; |
| 222 | |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 223 | if (nla_put_be64(skb, CTA_COUNTERS_PACKETS, cpu_to_be64(pkts)) || |
| 224 | nla_put_be64(skb, CTA_COUNTERS_BYTES, cpu_to_be64(bytes))) |
| 225 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 226 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 227 | nla_nest_end(skb, nest_count); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 228 | |
| 229 | return 0; |
| 230 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 231 | nla_put_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 232 | return -1; |
| 233 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 234 | |
Pablo Neira Ayuso | a992ca2 | 2011-01-19 16:00:07 +0100 | [diff] [blame] | 235 | static int |
Pablo Neira Ayuso | 80e60e6 | 2011-12-24 14:11:39 +0100 | [diff] [blame] | 236 | ctnetlink_dump_counters(struct sk_buff *skb, const struct nf_conn *ct, |
| 237 | enum ip_conntrack_dir dir, int type) |
| 238 | { |
| 239 | struct nf_conn_counter *acct; |
| 240 | u64 pkts, bytes; |
| 241 | |
| 242 | acct = nf_conn_acct_find(ct); |
| 243 | if (!acct) |
| 244 | return 0; |
| 245 | |
| 246 | if (type == IPCTNL_MSG_CT_GET_CTRZERO) { |
| 247 | pkts = atomic64_xchg(&acct[dir].packets, 0); |
| 248 | bytes = atomic64_xchg(&acct[dir].bytes, 0); |
| 249 | } else { |
| 250 | pkts = atomic64_read(&acct[dir].packets); |
| 251 | bytes = atomic64_read(&acct[dir].bytes); |
| 252 | } |
| 253 | return dump_counters(skb, pkts, bytes, dir); |
| 254 | } |
| 255 | |
| 256 | static int |
Pablo Neira Ayuso | a992ca2 | 2011-01-19 16:00:07 +0100 | [diff] [blame] | 257 | ctnetlink_dump_timestamp(struct sk_buff *skb, const struct nf_conn *ct) |
| 258 | { |
| 259 | struct nlattr *nest_count; |
| 260 | const struct nf_conn_tstamp *tstamp; |
| 261 | |
| 262 | tstamp = nf_conn_tstamp_find(ct); |
| 263 | if (!tstamp) |
| 264 | return 0; |
| 265 | |
| 266 | nest_count = nla_nest_start(skb, CTA_TIMESTAMP | NLA_F_NESTED); |
| 267 | if (!nest_count) |
| 268 | goto nla_put_failure; |
| 269 | |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 270 | if (nla_put_be64(skb, CTA_TIMESTAMP_START, cpu_to_be64(tstamp->start)) || |
| 271 | (tstamp->stop != 0 && nla_put_be64(skb, CTA_TIMESTAMP_STOP, |
| 272 | cpu_to_be64(tstamp->stop)))) |
| 273 | goto nla_put_failure; |
Pablo Neira Ayuso | a992ca2 | 2011-01-19 16:00:07 +0100 | [diff] [blame] | 274 | nla_nest_end(skb, nest_count); |
| 275 | |
| 276 | return 0; |
| 277 | |
| 278 | nla_put_failure: |
| 279 | return -1; |
| 280 | } |
| 281 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 282 | #ifdef CONFIG_NF_CONNTRACK_MARK |
| 283 | static inline int |
| 284 | ctnetlink_dump_mark(struct sk_buff *skb, const struct nf_conn *ct) |
| 285 | { |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 286 | if (nla_put_be32(skb, CTA_MARK, htonl(ct->mark))) |
| 287 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 288 | return 0; |
| 289 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 290 | nla_put_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 291 | return -1; |
| 292 | } |
| 293 | #else |
| 294 | #define ctnetlink_dump_mark(a, b) (0) |
| 295 | #endif |
| 296 | |
Pablo Neira Ayuso | 37fccd8 | 2007-12-17 22:28:41 -0800 | [diff] [blame] | 297 | #ifdef CONFIG_NF_CONNTRACK_SECMARK |
| 298 | static inline int |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 299 | 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] | 300 | { |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 301 | struct nlattr *nest_secctx; |
| 302 | int len, ret; |
| 303 | char *secctx; |
Pablo Neira Ayuso | 37fccd8 | 2007-12-17 22:28:41 -0800 | [diff] [blame] | 304 | |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 305 | ret = security_secid_to_secctx(ct->secmark, &secctx, &len); |
| 306 | if (ret) |
Pablo Neira Ayuso | cba85b5 | 2011-01-06 11:25:00 -0800 | [diff] [blame] | 307 | return 0; |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 308 | |
| 309 | ret = -1; |
| 310 | nest_secctx = nla_nest_start(skb, CTA_SECCTX | NLA_F_NESTED); |
| 311 | if (!nest_secctx) |
| 312 | goto nla_put_failure; |
| 313 | |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 314 | if (nla_put_string(skb, CTA_SECCTX_NAME, secctx)) |
| 315 | goto nla_put_failure; |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 316 | nla_nest_end(skb, nest_secctx); |
| 317 | |
| 318 | ret = 0; |
Pablo Neira Ayuso | 37fccd8 | 2007-12-17 22:28:41 -0800 | [diff] [blame] | 319 | nla_put_failure: |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 320 | security_release_secctx(secctx, len); |
| 321 | return ret; |
Pablo Neira Ayuso | 37fccd8 | 2007-12-17 22:28:41 -0800 | [diff] [blame] | 322 | } |
| 323 | #else |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 324 | #define ctnetlink_dump_secctx(a, b) (0) |
Pablo Neira Ayuso | 37fccd8 | 2007-12-17 22:28:41 -0800 | [diff] [blame] | 325 | #endif |
| 326 | |
Florian Westphal | 0ceabd8 | 2013-01-11 06:30:45 +0000 | [diff] [blame^] | 327 | #ifdef CONFIG_NF_CONNTRACK_LABELS |
| 328 | static int ctnetlink_label_size(const struct nf_conn *ct) |
| 329 | { |
| 330 | struct nf_conn_labels *labels = nf_ct_labels_find(ct); |
| 331 | |
| 332 | if (!labels) |
| 333 | return 0; |
| 334 | return nla_total_size(labels->words * sizeof(long)); |
| 335 | } |
| 336 | |
| 337 | static int |
| 338 | ctnetlink_dump_labels(struct sk_buff *skb, const struct nf_conn *ct) |
| 339 | { |
| 340 | struct nf_conn_labels *labels = nf_ct_labels_find(ct); |
| 341 | unsigned int len, i; |
| 342 | |
| 343 | if (!labels) |
| 344 | return 0; |
| 345 | |
| 346 | len = labels->words * sizeof(long); |
| 347 | i = 0; |
| 348 | do { |
| 349 | if (labels->bits[i] != 0) |
| 350 | return nla_put(skb, CTA_LABELS, len, labels->bits); |
| 351 | i++; |
| 352 | } while (i < labels->words); |
| 353 | |
| 354 | return 0; |
| 355 | } |
| 356 | #else |
| 357 | #define ctnetlink_dump_labels(a, b) (0) |
| 358 | #define ctnetlink_label_size(a) (0) |
| 359 | #endif |
| 360 | |
Pablo Neira Ayuso | 0f417ce | 2007-12-17 22:28:19 -0800 | [diff] [blame] | 361 | #define master_tuple(ct) &(ct->master->tuplehash[IP_CT_DIR_ORIGINAL].tuple) |
| 362 | |
| 363 | static inline int |
| 364 | ctnetlink_dump_master(struct sk_buff *skb, const struct nf_conn *ct) |
| 365 | { |
| 366 | struct nlattr *nest_parms; |
| 367 | |
| 368 | if (!(ct->status & IPS_EXPECTED)) |
| 369 | return 0; |
| 370 | |
| 371 | nest_parms = nla_nest_start(skb, CTA_TUPLE_MASTER | NLA_F_NESTED); |
| 372 | if (!nest_parms) |
| 373 | goto nla_put_failure; |
| 374 | if (ctnetlink_dump_tuples(skb, master_tuple(ct)) < 0) |
| 375 | goto nla_put_failure; |
| 376 | nla_nest_end(skb, nest_parms); |
| 377 | |
| 378 | return 0; |
| 379 | |
| 380 | nla_put_failure: |
| 381 | return -1; |
| 382 | } |
| 383 | |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 384 | #ifdef CONFIG_NF_NAT_NEEDED |
Ilpo Järvinen | bb5cf80 | 2008-01-05 23:11:31 -0800 | [diff] [blame] | 385 | static int |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 386 | dump_nat_seq_adj(struct sk_buff *skb, const struct nf_nat_seq *natseq, int type) |
| 387 | { |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 388 | struct nlattr *nest_parms; |
| 389 | |
| 390 | nest_parms = nla_nest_start(skb, type | NLA_F_NESTED); |
| 391 | if (!nest_parms) |
| 392 | goto nla_put_failure; |
| 393 | |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 394 | if (nla_put_be32(skb, CTA_NAT_SEQ_CORRECTION_POS, |
| 395 | htonl(natseq->correction_pos)) || |
| 396 | nla_put_be32(skb, CTA_NAT_SEQ_OFFSET_BEFORE, |
| 397 | htonl(natseq->offset_before)) || |
| 398 | nla_put_be32(skb, CTA_NAT_SEQ_OFFSET_AFTER, |
| 399 | htonl(natseq->offset_after))) |
| 400 | goto nla_put_failure; |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 401 | |
| 402 | nla_nest_end(skb, nest_parms); |
| 403 | |
| 404 | return 0; |
| 405 | |
| 406 | nla_put_failure: |
| 407 | return -1; |
| 408 | } |
| 409 | |
| 410 | static inline int |
| 411 | ctnetlink_dump_nat_seq_adj(struct sk_buff *skb, const struct nf_conn *ct) |
| 412 | { |
| 413 | struct nf_nat_seq *natseq; |
| 414 | struct nf_conn_nat *nat = nfct_nat(ct); |
| 415 | |
| 416 | if (!(ct->status & IPS_SEQ_ADJUST) || !nat) |
| 417 | return 0; |
| 418 | |
| 419 | natseq = &nat->seq[IP_CT_DIR_ORIGINAL]; |
| 420 | if (dump_nat_seq_adj(skb, natseq, CTA_NAT_SEQ_ADJ_ORIG) == -1) |
| 421 | return -1; |
| 422 | |
| 423 | natseq = &nat->seq[IP_CT_DIR_REPLY]; |
| 424 | if (dump_nat_seq_adj(skb, natseq, CTA_NAT_SEQ_ADJ_REPLY) == -1) |
| 425 | return -1; |
| 426 | |
| 427 | return 0; |
| 428 | } |
| 429 | #else |
| 430 | #define ctnetlink_dump_nat_seq_adj(a, b) (0) |
| 431 | #endif |
| 432 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 433 | static inline int |
| 434 | ctnetlink_dump_id(struct sk_buff *skb, const struct nf_conn *ct) |
| 435 | { |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 436 | if (nla_put_be32(skb, CTA_ID, htonl((unsigned long)ct))) |
| 437 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 438 | return 0; |
| 439 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 440 | nla_put_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 441 | return -1; |
| 442 | } |
| 443 | |
| 444 | static inline int |
| 445 | ctnetlink_dump_use(struct sk_buff *skb, const struct nf_conn *ct) |
| 446 | { |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 447 | if (nla_put_be32(skb, CTA_USE, htonl(atomic_read(&ct->ct_general.use)))) |
| 448 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 449 | return 0; |
| 450 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 451 | nla_put_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 452 | return -1; |
| 453 | } |
| 454 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 455 | static int |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 456 | 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] | 457 | struct nf_conn *ct) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 458 | { |
| 459 | struct nlmsghdr *nlh; |
| 460 | struct nfgenmsg *nfmsg; |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 461 | struct nlattr *nest_parms; |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 462 | unsigned int flags = portid ? NLM_F_MULTI : 0, event; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 463 | |
Pablo Neira Ayuso | 80e60e6 | 2011-12-24 14:11:39 +0100 | [diff] [blame] | 464 | event = (NFNL_SUBSYS_CTNETLINK << 8 | IPCTNL_MSG_CT_NEW); |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 465 | nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags); |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 466 | if (nlh == NULL) |
| 467 | goto nlmsg_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 468 | |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 469 | nfmsg = nlmsg_data(nlh); |
Patrick McHardy | 5e8fbe2 | 2008-04-14 11:15:52 +0200 | [diff] [blame] | 470 | nfmsg->nfgen_family = nf_ct_l3num(ct); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 471 | nfmsg->version = NFNETLINK_V0; |
| 472 | nfmsg->res_id = 0; |
| 473 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 474 | nest_parms = nla_nest_start(skb, CTA_TUPLE_ORIG | NLA_F_NESTED); |
| 475 | if (!nest_parms) |
| 476 | goto nla_put_failure; |
Pablo Neira Ayuso | f2f3e38 | 2009-06-02 20:03:35 +0200 | [diff] [blame] | 477 | 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] | 478 | goto nla_put_failure; |
| 479 | nla_nest_end(skb, nest_parms); |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 480 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 481 | nest_parms = nla_nest_start(skb, CTA_TUPLE_REPLY | NLA_F_NESTED); |
| 482 | if (!nest_parms) |
| 483 | goto nla_put_failure; |
Pablo Neira Ayuso | f2f3e38 | 2009-06-02 20:03:35 +0200 | [diff] [blame] | 484 | 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] | 485 | goto nla_put_failure; |
| 486 | nla_nest_end(skb, nest_parms); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 487 | |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 488 | if (nf_ct_zone(ct) && |
| 489 | nla_put_be16(skb, CTA_ZONE, htons(nf_ct_zone(ct)))) |
| 490 | goto nla_put_failure; |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 491 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 492 | if (ctnetlink_dump_status(skb, ct) < 0 || |
| 493 | ctnetlink_dump_timeout(skb, ct) < 0 || |
Pablo Neira Ayuso | 80e60e6 | 2011-12-24 14:11:39 +0100 | [diff] [blame] | 494 | ctnetlink_dump_counters(skb, ct, IP_CT_DIR_ORIGINAL, type) < 0 || |
| 495 | ctnetlink_dump_counters(skb, ct, IP_CT_DIR_REPLY, type) < 0 || |
Pablo Neira Ayuso | a992ca2 | 2011-01-19 16:00:07 +0100 | [diff] [blame] | 496 | ctnetlink_dump_timestamp(skb, ct) < 0 || |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 497 | ctnetlink_dump_protoinfo(skb, ct) < 0 || |
| 498 | ctnetlink_dump_helpinfo(skb, ct) < 0 || |
| 499 | ctnetlink_dump_mark(skb, ct) < 0 || |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 500 | ctnetlink_dump_secctx(skb, ct) < 0 || |
Florian Westphal | 0ceabd8 | 2013-01-11 06:30:45 +0000 | [diff] [blame^] | 501 | ctnetlink_dump_labels(skb, ct) < 0 || |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 502 | ctnetlink_dump_id(skb, ct) < 0 || |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 503 | ctnetlink_dump_use(skb, ct) < 0 || |
Pablo Neira Ayuso | 0f417ce | 2007-12-17 22:28:19 -0800 | [diff] [blame] | 504 | ctnetlink_dump_master(skb, ct) < 0 || |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 505 | ctnetlink_dump_nat_seq_adj(skb, ct) < 0) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 506 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 507 | |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 508 | nlmsg_end(skb, nlh); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 509 | return skb->len; |
| 510 | |
| 511 | nlmsg_failure: |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 512 | nla_put_failure: |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 513 | nlmsg_cancel(skb, nlh); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 514 | return -1; |
| 515 | } |
| 516 | |
Pablo Neira Ayuso | 03b64f5 | 2009-06-02 20:08:27 +0200 | [diff] [blame] | 517 | static inline size_t |
| 518 | ctnetlink_proto_size(const struct nf_conn *ct) |
Holger Eitzenberger | 2732c4e | 2009-03-25 21:50:59 +0100 | [diff] [blame] | 519 | { |
| 520 | struct nf_conntrack_l3proto *l3proto; |
| 521 | struct nf_conntrack_l4proto *l4proto; |
Pablo Neira Ayuso | 03b64f5 | 2009-06-02 20:08:27 +0200 | [diff] [blame] | 522 | size_t len = 0; |
Holger Eitzenberger | 2732c4e | 2009-03-25 21:50:59 +0100 | [diff] [blame] | 523 | |
| 524 | rcu_read_lock(); |
Pablo Neira Ayuso | 03b64f5 | 2009-06-02 20:08:27 +0200 | [diff] [blame] | 525 | l3proto = __nf_ct_l3proto_find(nf_ct_l3num(ct)); |
Holger Eitzenberger | 2732c4e | 2009-03-25 21:50:59 +0100 | [diff] [blame] | 526 | len += l3proto->nla_size; |
| 527 | |
Pablo Neira Ayuso | 03b64f5 | 2009-06-02 20:08:27 +0200 | [diff] [blame] | 528 | 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] | 529 | len += l4proto->nla_size; |
| 530 | rcu_read_unlock(); |
| 531 | |
Pablo Neira Ayuso | 03b64f5 | 2009-06-02 20:08:27 +0200 | [diff] [blame] | 532 | return len; |
| 533 | } |
| 534 | |
| 535 | static inline size_t |
Jiri Pirko | d26e6a0 | 2010-04-01 12:39:19 +0200 | [diff] [blame] | 536 | ctnetlink_counters_size(const struct nf_conn *ct) |
| 537 | { |
| 538 | if (!nf_ct_ext_exist(ct, NF_CT_EXT_ACCT)) |
| 539 | return 0; |
| 540 | return 2 * nla_total_size(0) /* CTA_COUNTERS_ORIG|REPL */ |
| 541 | + 2 * nla_total_size(sizeof(uint64_t)) /* CTA_COUNTERS_PACKETS */ |
| 542 | + 2 * nla_total_size(sizeof(uint64_t)) /* CTA_COUNTERS_BYTES */ |
| 543 | ; |
| 544 | } |
| 545 | |
Pablo Neira Ayuso | cba85b5 | 2011-01-06 11:25:00 -0800 | [diff] [blame] | 546 | static inline int |
| 547 | ctnetlink_secctx_size(const struct nf_conn *ct) |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 548 | { |
Pablo Neira Ayuso | cba85b5 | 2011-01-06 11:25:00 -0800 | [diff] [blame] | 549 | #ifdef CONFIG_NF_CONNTRACK_SECMARK |
| 550 | int len, ret; |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 551 | |
Pablo Neira Ayuso | cba85b5 | 2011-01-06 11:25:00 -0800 | [diff] [blame] | 552 | ret = security_secid_to_secctx(ct->secmark, NULL, &len); |
| 553 | if (ret) |
| 554 | return 0; |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 555 | |
Pablo Neira Ayuso | cba85b5 | 2011-01-06 11:25:00 -0800 | [diff] [blame] | 556 | return nla_total_size(0) /* CTA_SECCTX */ |
| 557 | + nla_total_size(sizeof(char) * len); /* CTA_SECCTX_NAME */ |
| 558 | #else |
| 559 | return 0; |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 560 | #endif |
Pablo Neira Ayuso | cba85b5 | 2011-01-06 11:25:00 -0800 | [diff] [blame] | 561 | } |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 562 | |
Jiri Pirko | d26e6a0 | 2010-04-01 12:39:19 +0200 | [diff] [blame] | 563 | static inline size_t |
Pablo Neira Ayuso | a992ca2 | 2011-01-19 16:00:07 +0100 | [diff] [blame] | 564 | ctnetlink_timestamp_size(const struct nf_conn *ct) |
| 565 | { |
| 566 | #ifdef CONFIG_NF_CONNTRACK_TIMESTAMP |
| 567 | if (!nf_ct_ext_exist(ct, NF_CT_EXT_TSTAMP)) |
| 568 | return 0; |
| 569 | return nla_total_size(0) + 2 * nla_total_size(sizeof(uint64_t)); |
| 570 | #else |
| 571 | return 0; |
| 572 | #endif |
| 573 | } |
| 574 | |
| 575 | static inline size_t |
Pablo Neira Ayuso | 03b64f5 | 2009-06-02 20:08:27 +0200 | [diff] [blame] | 576 | ctnetlink_nlmsg_size(const struct nf_conn *ct) |
| 577 | { |
| 578 | return NLMSG_ALIGN(sizeof(struct nfgenmsg)) |
| 579 | + 3 * nla_total_size(0) /* CTA_TUPLE_ORIG|REPL|MASTER */ |
| 580 | + 3 * nla_total_size(0) /* CTA_TUPLE_IP */ |
| 581 | + 3 * nla_total_size(0) /* CTA_TUPLE_PROTO */ |
| 582 | + 3 * nla_total_size(sizeof(u_int8_t)) /* CTA_PROTO_NUM */ |
| 583 | + nla_total_size(sizeof(u_int32_t)) /* CTA_ID */ |
| 584 | + nla_total_size(sizeof(u_int32_t)) /* CTA_STATUS */ |
Jiri Pirko | d26e6a0 | 2010-04-01 12:39:19 +0200 | [diff] [blame] | 585 | + ctnetlink_counters_size(ct) |
Pablo Neira Ayuso | a992ca2 | 2011-01-19 16:00:07 +0100 | [diff] [blame] | 586 | + ctnetlink_timestamp_size(ct) |
Pablo Neira Ayuso | 03b64f5 | 2009-06-02 20:08:27 +0200 | [diff] [blame] | 587 | + nla_total_size(sizeof(u_int32_t)) /* CTA_TIMEOUT */ |
| 588 | + nla_total_size(0) /* CTA_PROTOINFO */ |
| 589 | + nla_total_size(0) /* CTA_HELP */ |
| 590 | + nla_total_size(NF_CT_HELPER_NAME_LEN) /* CTA_HELP_NAME */ |
Pablo Neira Ayuso | cba85b5 | 2011-01-06 11:25:00 -0800 | [diff] [blame] | 591 | + ctnetlink_secctx_size(ct) |
Pablo Neira Ayuso | 03b64f5 | 2009-06-02 20:08:27 +0200 | [diff] [blame] | 592 | #ifdef CONFIG_NF_NAT_NEEDED |
| 593 | + 2 * nla_total_size(0) /* CTA_NAT_SEQ_ADJ_ORIG|REPL */ |
| 594 | + 6 * nla_total_size(sizeof(u_int32_t)) /* CTA_NAT_SEQ_OFFSET */ |
| 595 | #endif |
| 596 | #ifdef CONFIG_NF_CONNTRACK_MARK |
| 597 | + nla_total_size(sizeof(u_int32_t)) /* CTA_MARK */ |
| 598 | #endif |
| 599 | + ctnetlink_proto_size(ct) |
Florian Westphal | 0ceabd8 | 2013-01-11 06:30:45 +0000 | [diff] [blame^] | 600 | + ctnetlink_label_size(ct) |
Pablo Neira Ayuso | 03b64f5 | 2009-06-02 20:08:27 +0200 | [diff] [blame] | 601 | ; |
Holger Eitzenberger | 2732c4e | 2009-03-25 21:50:59 +0100 | [diff] [blame] | 602 | } |
| 603 | |
Pablo Neira Ayuso | 8e36c4b | 2012-06-23 01:43:51 +0200 | [diff] [blame] | 604 | #ifdef CONFIG_NF_CONNTRACK_EVENTS |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 605 | static int |
| 606 | ctnetlink_conntrack_event(unsigned int events, struct nf_ct_event *item) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 607 | { |
Alexey Dobriyan | 9592a5c | 2010-01-13 16:04:18 +0100 | [diff] [blame] | 608 | struct net *net; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 609 | struct nlmsghdr *nlh; |
| 610 | struct nfgenmsg *nfmsg; |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 611 | struct nlattr *nest_parms; |
Pablo Neira Ayuso | 19abb7b | 2008-11-18 11:56:20 +0100 | [diff] [blame] | 612 | struct nf_conn *ct = item->ct; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 613 | struct sk_buff *skb; |
| 614 | unsigned int type; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 615 | unsigned int flags = 0, group; |
Pablo Neira Ayuso | dd7669a | 2009-06-13 12:30:52 +0200 | [diff] [blame] | 616 | int err; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 617 | |
| 618 | /* ignore our fake conntrack entry */ |
Eric Dumazet | 5bfddbd | 2010-06-08 16:09:52 +0200 | [diff] [blame] | 619 | if (nf_ct_is_untracked(ct)) |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 620 | return 0; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 621 | |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 622 | if (events & (1 << IPCT_DESTROY)) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 623 | type = IPCTNL_MSG_CT_DELETE; |
| 624 | group = NFNLGRP_CONNTRACK_DESTROY; |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 625 | } else if (events & ((1 << IPCT_NEW) | (1 << IPCT_RELATED))) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 626 | type = IPCTNL_MSG_CT_NEW; |
| 627 | flags = NLM_F_CREATE|NLM_F_EXCL; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 628 | group = NFNLGRP_CONNTRACK_NEW; |
Pablo Neira Ayuso | 17e6e4e | 2009-06-02 20:08:46 +0200 | [diff] [blame] | 629 | } else if (events) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 630 | type = IPCTNL_MSG_CT_NEW; |
| 631 | group = NFNLGRP_CONNTRACK_UPDATE; |
| 632 | } else |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 633 | return 0; |
Patrick McHardy | a242769 | 2006-03-20 18:03:59 -0800 | [diff] [blame] | 634 | |
Alexey Dobriyan | 9592a5c | 2010-01-13 16:04:18 +0100 | [diff] [blame] | 635 | net = nf_ct_net(ct); |
| 636 | if (!item->report && !nfnetlink_has_listeners(net, group)) |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 637 | return 0; |
Patrick McHardy | a242769 | 2006-03-20 18:03:59 -0800 | [diff] [blame] | 638 | |
Pablo Neira Ayuso | 03b64f5 | 2009-06-02 20:08:27 +0200 | [diff] [blame] | 639 | skb = nlmsg_new(ctnetlink_nlmsg_size(ct), GFP_ATOMIC); |
| 640 | if (skb == NULL) |
Pablo Neira Ayuso | 150ace0 | 2009-04-17 17:47:31 +0200 | [diff] [blame] | 641 | goto errout; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 642 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 643 | type |= NFNL_SUBSYS_CTNETLINK << 8; |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 644 | nlh = nlmsg_put(skb, item->portid, 0, type, sizeof(*nfmsg), flags); |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 645 | if (nlh == NULL) |
| 646 | goto nlmsg_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 647 | |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 648 | nfmsg = nlmsg_data(nlh); |
Patrick McHardy | 5e8fbe2 | 2008-04-14 11:15:52 +0200 | [diff] [blame] | 649 | nfmsg->nfgen_family = nf_ct_l3num(ct); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 650 | nfmsg->version = NFNETLINK_V0; |
| 651 | nfmsg->res_id = 0; |
| 652 | |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 653 | rcu_read_lock(); |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 654 | nest_parms = nla_nest_start(skb, CTA_TUPLE_ORIG | NLA_F_NESTED); |
| 655 | if (!nest_parms) |
| 656 | goto nla_put_failure; |
Pablo Neira Ayuso | f2f3e38 | 2009-06-02 20:03:35 +0200 | [diff] [blame] | 657 | 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] | 658 | goto nla_put_failure; |
| 659 | nla_nest_end(skb, nest_parms); |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 660 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 661 | nest_parms = nla_nest_start(skb, CTA_TUPLE_REPLY | NLA_F_NESTED); |
| 662 | if (!nest_parms) |
| 663 | goto nla_put_failure; |
Pablo Neira Ayuso | f2f3e38 | 2009-06-02 20:03:35 +0200 | [diff] [blame] | 664 | 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] | 665 | goto nla_put_failure; |
| 666 | nla_nest_end(skb, nest_parms); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 667 | |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 668 | if (nf_ct_zone(ct) && |
| 669 | nla_put_be16(skb, CTA_ZONE, htons(nf_ct_zone(ct)))) |
| 670 | goto nla_put_failure; |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 671 | |
Eric Leblond | 1eedf69 | 2008-05-13 23:27:11 -0700 | [diff] [blame] | 672 | if (ctnetlink_dump_id(skb, ct) < 0) |
| 673 | goto nla_put_failure; |
| 674 | |
Fabian Hugelshofer | e57dce6 | 2008-06-09 15:59:58 -0700 | [diff] [blame] | 675 | if (ctnetlink_dump_status(skb, ct) < 0) |
| 676 | goto nla_put_failure; |
| 677 | |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 678 | if (events & (1 << IPCT_DESTROY)) { |
Pablo Neira Ayuso | 80e60e6 | 2011-12-24 14:11:39 +0100 | [diff] [blame] | 679 | if (ctnetlink_dump_counters(skb, ct, |
| 680 | IP_CT_DIR_ORIGINAL, type) < 0 || |
| 681 | ctnetlink_dump_counters(skb, ct, |
| 682 | IP_CT_DIR_REPLY, type) < 0 || |
Pablo Neira Ayuso | a992ca2 | 2011-01-19 16:00:07 +0100 | [diff] [blame] | 683 | ctnetlink_dump_timestamp(skb, ct) < 0) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 684 | goto nla_put_failure; |
Pablo Neira Ayuso | 7b621c1 | 2006-11-29 02:35:32 +0100 | [diff] [blame] | 685 | } else { |
Pablo Neira Ayuso | 7b621c1 | 2006-11-29 02:35:32 +0100 | [diff] [blame] | 686 | if (ctnetlink_dump_timeout(skb, ct) < 0) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 687 | goto nla_put_failure; |
Pablo Neira Ayuso | 7b621c1 | 2006-11-29 02:35:32 +0100 | [diff] [blame] | 688 | |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 689 | if (events & (1 << IPCT_PROTOINFO) |
Pablo Neira Ayuso | 7b621c1 | 2006-11-29 02:35:32 +0100 | [diff] [blame] | 690 | && ctnetlink_dump_protoinfo(skb, ct) < 0) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 691 | goto nla_put_failure; |
Pablo Neira Ayuso | 7b621c1 | 2006-11-29 02:35:32 +0100 | [diff] [blame] | 692 | |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 693 | if ((events & (1 << IPCT_HELPER) || nfct_help(ct)) |
Pablo Neira Ayuso | 7b621c1 | 2006-11-29 02:35:32 +0100 | [diff] [blame] | 694 | && ctnetlink_dump_helpinfo(skb, ct) < 0) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 695 | goto nla_put_failure; |
Pablo Neira Ayuso | 7b621c1 | 2006-11-29 02:35:32 +0100 | [diff] [blame] | 696 | |
Eric Paris | ff660c8 | 2010-10-19 18:17:32 -0400 | [diff] [blame] | 697 | #ifdef CONFIG_NF_CONNTRACK_SECMARK |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 698 | if ((events & (1 << IPCT_SECMARK) || ct->secmark) |
Eric Paris | 1cc6324 | 2010-10-13 16:24:54 -0400 | [diff] [blame] | 699 | && ctnetlink_dump_secctx(skb, ct) < 0) |
Pablo Neira Ayuso | 37fccd8 | 2007-12-17 22:28:41 -0800 | [diff] [blame] | 700 | goto nla_put_failure; |
Eric Paris | ff660c8 | 2010-10-19 18:17:32 -0400 | [diff] [blame] | 701 | #endif |
Florian Westphal | 0ceabd8 | 2013-01-11 06:30:45 +0000 | [diff] [blame^] | 702 | if (events & (1 << IPCT_LABEL) && |
| 703 | ctnetlink_dump_labels(skb, ct) < 0) |
| 704 | goto nla_put_failure; |
Pablo Neira Ayuso | 7b621c1 | 2006-11-29 02:35:32 +0100 | [diff] [blame] | 705 | |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 706 | if (events & (1 << IPCT_RELATED) && |
Pablo Neira Ayuso | 0f417ce | 2007-12-17 22:28:19 -0800 | [diff] [blame] | 707 | ctnetlink_dump_master(skb, ct) < 0) |
| 708 | goto nla_put_failure; |
| 709 | |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 710 | if (events & (1 << IPCT_NATSEQADJ) && |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 711 | ctnetlink_dump_nat_seq_adj(skb, ct) < 0) |
| 712 | goto nla_put_failure; |
Pablo Neira Ayuso | 7b621c1 | 2006-11-29 02:35:32 +0100 | [diff] [blame] | 713 | } |
Pablo Neira Ayuso | b9a37e0 | 2006-08-22 00:31:49 -0700 | [diff] [blame] | 714 | |
Eric Leblond | a83099a | 2008-01-31 04:44:27 -0800 | [diff] [blame] | 715 | #ifdef CONFIG_NF_CONNTRACK_MARK |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 716 | if ((events & (1 << IPCT_MARK) || ct->mark) |
Eric Leblond | a83099a | 2008-01-31 04:44:27 -0800 | [diff] [blame] | 717 | && ctnetlink_dump_mark(skb, ct) < 0) |
| 718 | goto nla_put_failure; |
| 719 | #endif |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 720 | rcu_read_unlock(); |
Eric Leblond | a83099a | 2008-01-31 04:44:27 -0800 | [diff] [blame] | 721 | |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 722 | nlmsg_end(skb, nlh); |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 723 | err = nfnetlink_send(skb, net, item->portid, group, item->report, |
Alexey Dobriyan | cd8c20b | 2010-01-13 16:02:14 +0100 | [diff] [blame] | 724 | GFP_ATOMIC); |
Pablo Neira Ayuso | dd7669a | 2009-06-13 12:30:52 +0200 | [diff] [blame] | 725 | if (err == -ENOBUFS || err == -EAGAIN) |
| 726 | return -ENOBUFS; |
| 727 | |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 728 | return 0; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 729 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 730 | nla_put_failure: |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 731 | rcu_read_unlock(); |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 732 | nlmsg_cancel(skb, nlh); |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 733 | nlmsg_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 734 | kfree_skb(skb); |
Pablo Neira Ayuso | 150ace0 | 2009-04-17 17:47:31 +0200 | [diff] [blame] | 735 | errout: |
Pablo Neira Ayuso | 37b7ef7 | 2010-03-16 13:30:21 +0000 | [diff] [blame] | 736 | if (nfnetlink_set_err(net, 0, group, -ENOBUFS) > 0) |
| 737 | return -ENOBUFS; |
| 738 | |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 739 | return 0; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 740 | } |
| 741 | #endif /* CONFIG_NF_CONNTRACK_EVENTS */ |
| 742 | |
| 743 | static int ctnetlink_done(struct netlink_callback *cb) |
| 744 | { |
Patrick McHardy | 89f2e21 | 2006-05-29 18:24:58 -0700 | [diff] [blame] | 745 | if (cb->args[1]) |
| 746 | nf_ct_put((struct nf_conn *)cb->args[1]); |
Pablo Neira Ayuso | 0f298a2 | 2012-02-24 14:41:50 +0000 | [diff] [blame] | 747 | if (cb->data) |
| 748 | kfree(cb->data); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 749 | return 0; |
| 750 | } |
| 751 | |
Pablo Neira Ayuso | 0f298a2 | 2012-02-24 14:41:50 +0000 | [diff] [blame] | 752 | struct ctnetlink_dump_filter { |
| 753 | struct { |
| 754 | u_int32_t val; |
| 755 | u_int32_t mask; |
| 756 | } mark; |
| 757 | }; |
| 758 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 759 | static int |
| 760 | ctnetlink_dump_table(struct sk_buff *skb, struct netlink_callback *cb) |
| 761 | { |
Alexey Dobriyan | 9592a5c | 2010-01-13 16:04:18 +0100 | [diff] [blame] | 762 | struct net *net = sock_net(skb->sk); |
Patrick McHardy | 89f2e21 | 2006-05-29 18:24:58 -0700 | [diff] [blame] | 763 | struct nf_conn *ct, *last; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 764 | struct nf_conntrack_tuple_hash *h; |
Eric Dumazet | ea781f1 | 2009-03-25 21:05:46 +0100 | [diff] [blame] | 765 | struct hlist_nulls_node *n; |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 766 | struct nfgenmsg *nfmsg = nlmsg_data(cb->nlh); |
Pablo Neira Ayuso | 87711cb | 2006-01-05 12:19:23 -0800 | [diff] [blame] | 767 | u_int8_t l3proto = nfmsg->nfgen_family; |
Hans Schillstrom | 3b988ec | 2012-03-05 02:24:29 +0000 | [diff] [blame] | 768 | int res; |
Pablo Neira Ayuso | 0f298a2 | 2012-02-24 14:41:50 +0000 | [diff] [blame] | 769 | #ifdef CONFIG_NF_CONNTRACK_MARK |
| 770 | const struct ctnetlink_dump_filter *filter = cb->data; |
| 771 | #endif |
Hans Schillstrom | 3b988ec | 2012-03-05 02:24:29 +0000 | [diff] [blame] | 772 | |
Stephen Hemminger | 13ee6ac | 2011-01-11 23:54:42 +0100 | [diff] [blame] | 773 | spin_lock_bh(&nf_conntrack_lock); |
Patrick McHardy | d205dc4 | 2006-08-17 18:12:38 -0700 | [diff] [blame] | 774 | last = (struct nf_conn *)cb->args[1]; |
Patrick McHardy | 9ab99d5 | 2010-02-10 14:17:10 +0100 | [diff] [blame] | 775 | for (; cb->args[0] < net->ct.htable_size; cb->args[0]++) { |
Patrick McHardy | 89f2e21 | 2006-05-29 18:24:58 -0700 | [diff] [blame] | 776 | restart: |
Stephen Hemminger | 13ee6ac | 2011-01-11 23:54:42 +0100 | [diff] [blame] | 777 | 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] | 778 | hnnode) { |
Jozsef Kadlecsik | 5b1158e | 2006-12-02 22:07:13 -0800 | [diff] [blame] | 779 | if (NF_CT_DIRECTION(h) != IP_CT_DIR_ORIGINAL) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 780 | continue; |
| 781 | ct = nf_ct_tuplehash_to_ctrack(h); |
Pablo Neira Ayuso | 87711cb | 2006-01-05 12:19:23 -0800 | [diff] [blame] | 782 | /* Dump entries of a given L3 protocol number. |
| 783 | * If it is not specified, ie. l3proto == 0, |
| 784 | * then dump everything. */ |
Patrick McHardy | 5e8fbe2 | 2008-04-14 11:15:52 +0200 | [diff] [blame] | 785 | if (l3proto && nf_ct_l3num(ct) != l3proto) |
Stephen Hemminger | 13ee6ac | 2011-01-11 23:54:42 +0100 | [diff] [blame] | 786 | continue; |
Patrick McHardy | d205dc4 | 2006-08-17 18:12:38 -0700 | [diff] [blame] | 787 | if (cb->args[1]) { |
| 788 | if (ct != last) |
Stephen Hemminger | 13ee6ac | 2011-01-11 23:54:42 +0100 | [diff] [blame] | 789 | continue; |
Patrick McHardy | d205dc4 | 2006-08-17 18:12:38 -0700 | [diff] [blame] | 790 | cb->args[1] = 0; |
Patrick McHardy | 89f2e21 | 2006-05-29 18:24:58 -0700 | [diff] [blame] | 791 | } |
Pablo Neira Ayuso | 0f298a2 | 2012-02-24 14:41:50 +0000 | [diff] [blame] | 792 | #ifdef CONFIG_NF_CONNTRACK_MARK |
| 793 | if (filter && !((ct->mark & filter->mark.mask) == |
| 794 | filter->mark.val)) { |
| 795 | continue; |
| 796 | } |
| 797 | #endif |
Hans Schillstrom | 3b988ec | 2012-03-05 02:24:29 +0000 | [diff] [blame] | 798 | rcu_read_lock(); |
| 799 | res = |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 800 | ctnetlink_fill_info(skb, NETLINK_CB(cb->skb).portid, |
Hans Schillstrom | 3b988ec | 2012-03-05 02:24:29 +0000 | [diff] [blame] | 801 | cb->nlh->nlmsg_seq, |
| 802 | NFNL_MSG_TYPE(cb->nlh->nlmsg_type), |
| 803 | ct); |
| 804 | rcu_read_unlock(); |
| 805 | if (res < 0) { |
Pablo Neira Ayuso | c71caf4 | 2011-01-24 19:01:07 +0100 | [diff] [blame] | 806 | nf_conntrack_get(&ct->ct_general); |
Patrick McHardy | 89f2e21 | 2006-05-29 18:24:58 -0700 | [diff] [blame] | 807 | cb->args[1] = (unsigned long)ct; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 808 | goto out; |
Patrick McHardy | 89f2e21 | 2006-05-29 18:24:58 -0700 | [diff] [blame] | 809 | } |
| 810 | } |
Patrick McHardy | d205dc4 | 2006-08-17 18:12:38 -0700 | [diff] [blame] | 811 | if (cb->args[1]) { |
Patrick McHardy | 89f2e21 | 2006-05-29 18:24:58 -0700 | [diff] [blame] | 812 | cb->args[1] = 0; |
| 813 | goto restart; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 814 | } |
| 815 | } |
Patrick McHardy | 89f2e21 | 2006-05-29 18:24:58 -0700 | [diff] [blame] | 816 | out: |
Stephen Hemminger | 13ee6ac | 2011-01-11 23:54:42 +0100 | [diff] [blame] | 817 | spin_unlock_bh(&nf_conntrack_lock); |
Patrick McHardy | d205dc4 | 2006-08-17 18:12:38 -0700 | [diff] [blame] | 818 | if (last) |
| 819 | nf_ct_put(last); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 820 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 821 | return skb->len; |
| 822 | } |
| 823 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 824 | static inline int |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 825 | 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] | 826 | { |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 827 | struct nlattr *tb[CTA_IP_MAX+1]; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 828 | struct nf_conntrack_l3proto *l3proto; |
| 829 | int ret = 0; |
| 830 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 831 | nla_parse_nested(tb, CTA_IP_MAX, attr, NULL); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 832 | |
Florian Westphal | cd91566 | 2009-03-18 17:28:37 +0100 | [diff] [blame] | 833 | rcu_read_lock(); |
| 834 | l3proto = __nf_ct_l3proto_find(tuple->src.l3num); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 835 | |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 836 | if (likely(l3proto->nlattr_to_tuple)) { |
| 837 | ret = nla_validate_nested(attr, CTA_IP_MAX, |
| 838 | l3proto->nla_policy); |
| 839 | if (ret == 0) |
| 840 | ret = l3proto->nlattr_to_tuple(tb, tuple); |
| 841 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 842 | |
Florian Westphal | cd91566 | 2009-03-18 17:28:37 +0100 | [diff] [blame] | 843 | rcu_read_unlock(); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 844 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 845 | return ret; |
| 846 | } |
| 847 | |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 848 | static const struct nla_policy proto_nla_policy[CTA_PROTO_MAX+1] = { |
| 849 | [CTA_PROTO_NUM] = { .type = NLA_U8 }, |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 850 | }; |
| 851 | |
| 852 | static inline int |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 853 | ctnetlink_parse_tuple_proto(struct nlattr *attr, |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 854 | struct nf_conntrack_tuple *tuple) |
| 855 | { |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 856 | struct nlattr *tb[CTA_PROTO_MAX+1]; |
Martin Josefsson | 605dcad | 2006-11-29 02:35:06 +0100 | [diff] [blame] | 857 | struct nf_conntrack_l4proto *l4proto; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 858 | int ret = 0; |
| 859 | |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 860 | ret = nla_parse_nested(tb, CTA_PROTO_MAX, attr, proto_nla_policy); |
| 861 | if (ret < 0) |
| 862 | return ret; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 863 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 864 | if (!tb[CTA_PROTO_NUM]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 865 | return -EINVAL; |
Patrick McHardy | 77236b6 | 2007-12-17 22:29:45 -0800 | [diff] [blame] | 866 | tuple->dst.protonum = nla_get_u8(tb[CTA_PROTO_NUM]); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 867 | |
Florian Westphal | cd91566 | 2009-03-18 17:28:37 +0100 | [diff] [blame] | 868 | rcu_read_lock(); |
| 869 | l4proto = __nf_ct_l4proto_find(tuple->src.l3num, tuple->dst.protonum); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 870 | |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 871 | if (likely(l4proto->nlattr_to_tuple)) { |
| 872 | ret = nla_validate_nested(attr, CTA_PROTO_MAX, |
| 873 | l4proto->nla_policy); |
| 874 | if (ret == 0) |
| 875 | ret = l4proto->nlattr_to_tuple(tb, tuple); |
| 876 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 877 | |
Florian Westphal | cd91566 | 2009-03-18 17:28:37 +0100 | [diff] [blame] | 878 | rcu_read_unlock(); |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 879 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 880 | return ret; |
| 881 | } |
| 882 | |
Patrick McHardy | d0b0268 | 2010-02-10 15:38:33 +0100 | [diff] [blame] | 883 | static const struct nla_policy tuple_nla_policy[CTA_TUPLE_MAX+1] = { |
| 884 | [CTA_TUPLE_IP] = { .type = NLA_NESTED }, |
| 885 | [CTA_TUPLE_PROTO] = { .type = NLA_NESTED }, |
| 886 | }; |
| 887 | |
Ilpo Järvinen | bb5cf80 | 2008-01-05 23:11:31 -0800 | [diff] [blame] | 888 | static int |
Patrick McHardy | 3993832 | 2009-08-25 16:07:58 +0200 | [diff] [blame] | 889 | ctnetlink_parse_tuple(const struct nlattr * const cda[], |
| 890 | struct nf_conntrack_tuple *tuple, |
Patrick McHardy | a00f1f3 | 2011-02-01 17:26:37 +0100 | [diff] [blame] | 891 | enum ctattr_type type, u_int8_t l3num) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 892 | { |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 893 | struct nlattr *tb[CTA_TUPLE_MAX+1]; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 894 | int err; |
| 895 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 896 | memset(tuple, 0, sizeof(*tuple)); |
| 897 | |
Patrick McHardy | d0b0268 | 2010-02-10 15:38:33 +0100 | [diff] [blame] | 898 | nla_parse_nested(tb, CTA_TUPLE_MAX, cda[type], tuple_nla_policy); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 899 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 900 | if (!tb[CTA_TUPLE_IP]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 901 | return -EINVAL; |
| 902 | |
| 903 | tuple->src.l3num = l3num; |
| 904 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 905 | err = ctnetlink_parse_tuple_ip(tb[CTA_TUPLE_IP], tuple); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 906 | if (err < 0) |
| 907 | return err; |
| 908 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 909 | if (!tb[CTA_TUPLE_PROTO]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 910 | return -EINVAL; |
| 911 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 912 | err = ctnetlink_parse_tuple_proto(tb[CTA_TUPLE_PROTO], tuple); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 913 | if (err < 0) |
| 914 | return err; |
| 915 | |
| 916 | /* orig and expect tuples get DIR_ORIGINAL */ |
| 917 | if (type == CTA_TUPLE_REPLY) |
| 918 | tuple->dst.dir = IP_CT_DIR_REPLY; |
| 919 | else |
| 920 | tuple->dst.dir = IP_CT_DIR_ORIGINAL; |
| 921 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 922 | return 0; |
| 923 | } |
| 924 | |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 925 | static int |
| 926 | ctnetlink_parse_zone(const struct nlattr *attr, u16 *zone) |
| 927 | { |
| 928 | if (attr) |
| 929 | #ifdef CONFIG_NF_CONNTRACK_ZONES |
| 930 | *zone = ntohs(nla_get_be16(attr)); |
| 931 | #else |
| 932 | return -EOPNOTSUPP; |
| 933 | #endif |
| 934 | else |
| 935 | *zone = 0; |
| 936 | |
| 937 | return 0; |
| 938 | } |
| 939 | |
Patrick McHardy | d0b0268 | 2010-02-10 15:38:33 +0100 | [diff] [blame] | 940 | static const struct nla_policy help_nla_policy[CTA_HELP_MAX+1] = { |
Florian Westphal | 6d1fafc | 2012-11-22 01:32:46 +0000 | [diff] [blame] | 941 | [CTA_HELP_NAME] = { .type = NLA_NUL_STRING, |
| 942 | .len = NF_CT_HELPER_NAME_LEN - 1 }, |
Patrick McHardy | d0b0268 | 2010-02-10 15:38:33 +0100 | [diff] [blame] | 943 | }; |
| 944 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 945 | static inline int |
Pablo Neira Ayuso | ae243be | 2012-06-07 14:19:42 +0200 | [diff] [blame] | 946 | ctnetlink_parse_help(const struct nlattr *attr, char **helper_name, |
| 947 | struct nlattr **helpinfo) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 948 | { |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 949 | struct nlattr *tb[CTA_HELP_MAX+1]; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 950 | |
Patrick McHardy | d0b0268 | 2010-02-10 15:38:33 +0100 | [diff] [blame] | 951 | nla_parse_nested(tb, CTA_HELP_MAX, attr, help_nla_policy); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 952 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 953 | if (!tb[CTA_HELP_NAME]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 954 | return -EINVAL; |
| 955 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 956 | *helper_name = nla_data(tb[CTA_HELP_NAME]); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 957 | |
Pablo Neira Ayuso | ae243be | 2012-06-07 14:19:42 +0200 | [diff] [blame] | 958 | if (tb[CTA_HELP_INFO]) |
| 959 | *helpinfo = tb[CTA_HELP_INFO]; |
| 960 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 961 | return 0; |
| 962 | } |
| 963 | |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 964 | static const struct nla_policy ct_nla_policy[CTA_MAX+1] = { |
Patrick McHardy | d0b0268 | 2010-02-10 15:38:33 +0100 | [diff] [blame] | 965 | [CTA_TUPLE_ORIG] = { .type = NLA_NESTED }, |
| 966 | [CTA_TUPLE_REPLY] = { .type = NLA_NESTED }, |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 967 | [CTA_STATUS] = { .type = NLA_U32 }, |
Patrick McHardy | d0b0268 | 2010-02-10 15:38:33 +0100 | [diff] [blame] | 968 | [CTA_PROTOINFO] = { .type = NLA_NESTED }, |
| 969 | [CTA_HELP] = { .type = NLA_NESTED }, |
| 970 | [CTA_NAT_SRC] = { .type = NLA_NESTED }, |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 971 | [CTA_TIMEOUT] = { .type = NLA_U32 }, |
| 972 | [CTA_MARK] = { .type = NLA_U32 }, |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 973 | [CTA_ID] = { .type = NLA_U32 }, |
Patrick McHardy | d0b0268 | 2010-02-10 15:38:33 +0100 | [diff] [blame] | 974 | [CTA_NAT_DST] = { .type = NLA_NESTED }, |
| 975 | [CTA_TUPLE_MASTER] = { .type = NLA_NESTED }, |
Florian Westphal | 6d1fafc | 2012-11-22 01:32:46 +0000 | [diff] [blame] | 976 | [CTA_NAT_SEQ_ADJ_ORIG] = { .type = NLA_NESTED }, |
| 977 | [CTA_NAT_SEQ_ADJ_REPLY] = { .type = NLA_NESTED }, |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 978 | [CTA_ZONE] = { .type = NLA_U16 }, |
Pablo Neira Ayuso | 0f298a2 | 2012-02-24 14:41:50 +0000 | [diff] [blame] | 979 | [CTA_MARK_MASK] = { .type = NLA_U32 }, |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 980 | }; |
| 981 | |
| 982 | static int |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 983 | ctnetlink_del_conntrack(struct sock *ctnl, struct sk_buff *skb, |
Patrick McHardy | 3993832 | 2009-08-25 16:07:58 +0200 | [diff] [blame] | 984 | const struct nlmsghdr *nlh, |
| 985 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 986 | { |
Alexey Dobriyan | 9592a5c | 2010-01-13 16:04:18 +0100 | [diff] [blame] | 987 | struct net *net = sock_net(ctnl); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 988 | struct nf_conntrack_tuple_hash *h; |
| 989 | struct nf_conntrack_tuple tuple; |
| 990 | struct nf_conn *ct; |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 991 | struct nfgenmsg *nfmsg = nlmsg_data(nlh); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 992 | u_int8_t u3 = nfmsg->nfgen_family; |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 993 | u16 zone; |
| 994 | int err; |
| 995 | |
| 996 | err = ctnetlink_parse_zone(cda[CTA_ZONE], &zone); |
| 997 | if (err < 0) |
| 998 | return err; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 999 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1000 | if (cda[CTA_TUPLE_ORIG]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1001 | err = ctnetlink_parse_tuple(cda, &tuple, CTA_TUPLE_ORIG, u3); |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1002 | else if (cda[CTA_TUPLE_REPLY]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1003 | err = ctnetlink_parse_tuple(cda, &tuple, CTA_TUPLE_REPLY, u3); |
| 1004 | else { |
| 1005 | /* Flush the whole table */ |
Alexey Dobriyan | 9592a5c | 2010-01-13 16:04:18 +0100 | [diff] [blame] | 1006 | nf_conntrack_flush_report(net, |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 1007 | NETLINK_CB(skb).portid, |
Pablo Neira Ayuso | 274d383 | 2009-06-02 20:08:38 +0200 | [diff] [blame] | 1008 | nlmsg_report(nlh)); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1009 | return 0; |
| 1010 | } |
| 1011 | |
| 1012 | if (err < 0) |
| 1013 | return err; |
| 1014 | |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 1015 | h = nf_conntrack_find_get(net, zone, &tuple); |
Pablo Neira Ayuso | 9ea8cfd | 2006-10-12 14:09:16 -0700 | [diff] [blame] | 1016 | if (!h) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1017 | return -ENOENT; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1018 | |
| 1019 | ct = nf_ct_tuplehash_to_ctrack(h); |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 1020 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1021 | if (cda[CTA_ID]) { |
Patrick McHardy | 77236b6 | 2007-12-17 22:29:45 -0800 | [diff] [blame] | 1022 | u_int32_t id = ntohl(nla_get_be32(cda[CTA_ID])); |
Patrick McHardy | 7f85f91 | 2007-09-28 14:41:27 -0700 | [diff] [blame] | 1023 | if (id != (u32)(unsigned long)ct) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1024 | nf_ct_put(ct); |
| 1025 | return -ENOENT; |
| 1026 | } |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 1027 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1028 | |
Pablo Neira Ayuso | a16a164 | 2012-03-16 02:00:34 +0000 | [diff] [blame] | 1029 | if (del_timer(&ct->timeout)) { |
| 1030 | if (nf_conntrack_event_report(IPCT_DESTROY, ct, |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 1031 | NETLINK_CB(skb).portid, |
Pablo Neira Ayuso | a16a164 | 2012-03-16 02:00:34 +0000 | [diff] [blame] | 1032 | nlmsg_report(nlh)) < 0) { |
| 1033 | nf_ct_delete_from_lists(ct); |
| 1034 | /* we failed to report the event, try later */ |
Pablo Neira Ayuso | 04dac01 | 2012-11-27 21:30:52 +0100 | [diff] [blame] | 1035 | nf_ct_dying_timeout(ct); |
Pablo Neira Ayuso | a16a164 | 2012-03-16 02:00:34 +0000 | [diff] [blame] | 1036 | nf_ct_put(ct); |
| 1037 | return 0; |
| 1038 | } |
| 1039 | /* death_by_timeout would report the event again */ |
| 1040 | set_bit(IPS_DYING_BIT, &ct->status); |
Pablo Neira Ayuso | dd7669a | 2009-06-13 12:30:52 +0200 | [diff] [blame] | 1041 | nf_ct_delete_from_lists(ct); |
Pablo Neira Ayuso | dd7669a | 2009-06-13 12:30:52 +0200 | [diff] [blame] | 1042 | nf_ct_put(ct); |
Pablo Neira Ayuso | dd7669a | 2009-06-13 12:30:52 +0200 | [diff] [blame] | 1043 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1044 | nf_ct_put(ct); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1045 | |
| 1046 | return 0; |
| 1047 | } |
| 1048 | |
| 1049 | static int |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 1050 | ctnetlink_get_conntrack(struct sock *ctnl, struct sk_buff *skb, |
Patrick McHardy | 3993832 | 2009-08-25 16:07:58 +0200 | [diff] [blame] | 1051 | const struct nlmsghdr *nlh, |
| 1052 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1053 | { |
Alexey Dobriyan | 9592a5c | 2010-01-13 16:04:18 +0100 | [diff] [blame] | 1054 | struct net *net = sock_net(ctnl); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1055 | struct nf_conntrack_tuple_hash *h; |
| 1056 | struct nf_conntrack_tuple tuple; |
| 1057 | struct nf_conn *ct; |
| 1058 | struct sk_buff *skb2 = NULL; |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 1059 | struct nfgenmsg *nfmsg = nlmsg_data(nlh); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1060 | u_int8_t u3 = nfmsg->nfgen_family; |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 1061 | u16 zone; |
| 1062 | int err; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1063 | |
Pablo Neira Ayuso | 80d326f | 2012-02-24 14:30:15 +0000 | [diff] [blame] | 1064 | if (nlh->nlmsg_flags & NLM_F_DUMP) { |
| 1065 | struct netlink_dump_control c = { |
| 1066 | .dump = ctnetlink_dump_table, |
| 1067 | .done = ctnetlink_done, |
| 1068 | }; |
Pablo Neira Ayuso | 0f298a2 | 2012-02-24 14:41:50 +0000 | [diff] [blame] | 1069 | #ifdef CONFIG_NF_CONNTRACK_MARK |
| 1070 | if (cda[CTA_MARK] && cda[CTA_MARK_MASK]) { |
| 1071 | struct ctnetlink_dump_filter *filter; |
| 1072 | |
| 1073 | filter = kzalloc(sizeof(struct ctnetlink_dump_filter), |
| 1074 | GFP_ATOMIC); |
| 1075 | if (filter == NULL) |
| 1076 | return -ENOMEM; |
| 1077 | |
| 1078 | filter->mark.val = ntohl(nla_get_be32(cda[CTA_MARK])); |
| 1079 | filter->mark.mask = |
| 1080 | ntohl(nla_get_be32(cda[CTA_MARK_MASK])); |
| 1081 | c.data = filter; |
| 1082 | } |
| 1083 | #endif |
Pablo Neira Ayuso | 80d326f | 2012-02-24 14:30:15 +0000 | [diff] [blame] | 1084 | return netlink_dump_start(ctnl, skb, nlh, &c); |
| 1085 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1086 | |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 1087 | err = ctnetlink_parse_zone(cda[CTA_ZONE], &zone); |
| 1088 | if (err < 0) |
| 1089 | return err; |
| 1090 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1091 | if (cda[CTA_TUPLE_ORIG]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1092 | err = ctnetlink_parse_tuple(cda, &tuple, CTA_TUPLE_ORIG, u3); |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1093 | else if (cda[CTA_TUPLE_REPLY]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1094 | err = ctnetlink_parse_tuple(cda, &tuple, CTA_TUPLE_REPLY, u3); |
| 1095 | else |
| 1096 | return -EINVAL; |
| 1097 | |
| 1098 | if (err < 0) |
| 1099 | return err; |
| 1100 | |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 1101 | h = nf_conntrack_find_get(net, zone, &tuple); |
Pablo Neira Ayuso | 9ea8cfd | 2006-10-12 14:09:16 -0700 | [diff] [blame] | 1102 | if (!h) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1103 | return -ENOENT; |
Pablo Neira Ayuso | 9ea8cfd | 2006-10-12 14:09:16 -0700 | [diff] [blame] | 1104 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1105 | ct = nf_ct_tuplehash_to_ctrack(h); |
| 1106 | |
| 1107 | err = -ENOMEM; |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 1108 | skb2 = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| 1109 | if (skb2 == NULL) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1110 | nf_ct_put(ct); |
| 1111 | return -ENOMEM; |
| 1112 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1113 | |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 1114 | rcu_read_lock(); |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 1115 | 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] | 1116 | NFNL_MSG_TYPE(nlh->nlmsg_type), ct); |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 1117 | rcu_read_unlock(); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1118 | nf_ct_put(ct); |
| 1119 | if (err <= 0) |
| 1120 | goto free; |
| 1121 | |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 1122 | err = netlink_unicast(ctnl, skb2, NETLINK_CB(skb).portid, MSG_DONTWAIT); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1123 | if (err < 0) |
| 1124 | goto out; |
| 1125 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1126 | return 0; |
| 1127 | |
| 1128 | free: |
| 1129 | kfree_skb(skb2); |
| 1130 | out: |
Pablo Neira Ayuso | f31e8d49 | 2011-01-13 14:19:55 +0100 | [diff] [blame] | 1131 | /* this avoids a loop in nfnetlink. */ |
| 1132 | return err == -EAGAIN ? -ENOBUFS : err; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1133 | } |
| 1134 | |
Pablo Neira Ayuso | d871bef | 2012-11-27 14:49:42 +0100 | [diff] [blame] | 1135 | static int ctnetlink_done_list(struct netlink_callback *cb) |
| 1136 | { |
| 1137 | if (cb->args[1]) |
| 1138 | nf_ct_put((struct nf_conn *)cb->args[1]); |
| 1139 | return 0; |
| 1140 | } |
| 1141 | |
| 1142 | static int |
| 1143 | ctnetlink_dump_list(struct sk_buff *skb, struct netlink_callback *cb, |
| 1144 | struct hlist_nulls_head *list) |
| 1145 | { |
| 1146 | struct nf_conn *ct, *last; |
| 1147 | struct nf_conntrack_tuple_hash *h; |
| 1148 | struct hlist_nulls_node *n; |
| 1149 | struct nfgenmsg *nfmsg = nlmsg_data(cb->nlh); |
| 1150 | u_int8_t l3proto = nfmsg->nfgen_family; |
| 1151 | int res; |
| 1152 | |
| 1153 | if (cb->args[2]) |
| 1154 | return 0; |
| 1155 | |
| 1156 | spin_lock_bh(&nf_conntrack_lock); |
| 1157 | last = (struct nf_conn *)cb->args[1]; |
| 1158 | restart: |
| 1159 | hlist_nulls_for_each_entry(h, n, list, hnnode) { |
| 1160 | ct = nf_ct_tuplehash_to_ctrack(h); |
| 1161 | if (l3proto && nf_ct_l3num(ct) != l3proto) |
| 1162 | continue; |
| 1163 | if (cb->args[1]) { |
| 1164 | if (ct != last) |
| 1165 | continue; |
| 1166 | cb->args[1] = 0; |
| 1167 | } |
| 1168 | rcu_read_lock(); |
| 1169 | res = ctnetlink_fill_info(skb, NETLINK_CB(cb->skb).portid, |
| 1170 | cb->nlh->nlmsg_seq, |
| 1171 | NFNL_MSG_TYPE(cb->nlh->nlmsg_type), |
| 1172 | ct); |
| 1173 | rcu_read_unlock(); |
| 1174 | if (res < 0) { |
| 1175 | nf_conntrack_get(&ct->ct_general); |
| 1176 | cb->args[1] = (unsigned long)ct; |
| 1177 | goto out; |
| 1178 | } |
| 1179 | } |
| 1180 | if (cb->args[1]) { |
| 1181 | cb->args[1] = 0; |
| 1182 | goto restart; |
| 1183 | } else |
| 1184 | cb->args[2] = 1; |
| 1185 | out: |
| 1186 | spin_unlock_bh(&nf_conntrack_lock); |
| 1187 | if (last) |
| 1188 | nf_ct_put(last); |
| 1189 | |
| 1190 | return skb->len; |
| 1191 | } |
| 1192 | |
| 1193 | static int |
| 1194 | ctnetlink_dump_dying(struct sk_buff *skb, struct netlink_callback *cb) |
| 1195 | { |
| 1196 | struct net *net = sock_net(skb->sk); |
| 1197 | |
| 1198 | return ctnetlink_dump_list(skb, cb, &net->ct.dying); |
| 1199 | } |
| 1200 | |
| 1201 | static int |
| 1202 | ctnetlink_get_ct_dying(struct sock *ctnl, struct sk_buff *skb, |
| 1203 | const struct nlmsghdr *nlh, |
| 1204 | const struct nlattr * const cda[]) |
| 1205 | { |
| 1206 | if (nlh->nlmsg_flags & NLM_F_DUMP) { |
| 1207 | struct netlink_dump_control c = { |
| 1208 | .dump = ctnetlink_dump_dying, |
| 1209 | .done = ctnetlink_done_list, |
| 1210 | }; |
| 1211 | return netlink_dump_start(ctnl, skb, nlh, &c); |
| 1212 | } |
| 1213 | |
| 1214 | return -EOPNOTSUPP; |
| 1215 | } |
| 1216 | |
| 1217 | static int |
| 1218 | ctnetlink_dump_unconfirmed(struct sk_buff *skb, struct netlink_callback *cb) |
| 1219 | { |
| 1220 | struct net *net = sock_net(skb->sk); |
| 1221 | |
| 1222 | return ctnetlink_dump_list(skb, cb, &net->ct.unconfirmed); |
| 1223 | } |
| 1224 | |
| 1225 | static int |
| 1226 | ctnetlink_get_ct_unconfirmed(struct sock *ctnl, struct sk_buff *skb, |
| 1227 | const struct nlmsghdr *nlh, |
| 1228 | const struct nlattr * const cda[]) |
| 1229 | { |
| 1230 | if (nlh->nlmsg_flags & NLM_F_DUMP) { |
| 1231 | struct netlink_dump_control c = { |
| 1232 | .dump = ctnetlink_dump_unconfirmed, |
| 1233 | .done = ctnetlink_done_list, |
| 1234 | }; |
| 1235 | return netlink_dump_start(ctnl, skb, nlh, &c); |
| 1236 | } |
| 1237 | |
| 1238 | return -EOPNOTSUPP; |
| 1239 | } |
| 1240 | |
Pablo Neira Ayuso | 6767184 | 2008-10-20 03:34:27 -0700 | [diff] [blame] | 1241 | #ifdef CONFIG_NF_NAT_NEEDED |
Ilpo Järvinen | bb5cf80 | 2008-01-05 23:11:31 -0800 | [diff] [blame] | 1242 | static int |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 1243 | ctnetlink_parse_nat_setup(struct nf_conn *ct, |
| 1244 | enum nf_nat_manip_type manip, |
Patrick McHardy | 3993832 | 2009-08-25 16:07:58 +0200 | [diff] [blame] | 1245 | const struct nlattr *attr) |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 1246 | { |
| 1247 | typeof(nfnetlink_parse_nat_setup_hook) parse_nat_setup; |
Patrick McHardy | c7232c9 | 2012-08-26 19:14:06 +0200 | [diff] [blame] | 1248 | int err; |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 1249 | |
| 1250 | parse_nat_setup = rcu_dereference(nfnetlink_parse_nat_setup_hook); |
| 1251 | if (!parse_nat_setup) { |
Johannes Berg | 95a5afc | 2008-10-16 15:24:51 -0700 | [diff] [blame] | 1252 | #ifdef CONFIG_MODULES |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 1253 | rcu_read_unlock(); |
| 1254 | nfnl_unlock(); |
Patrick McHardy | c7232c9 | 2012-08-26 19:14:06 +0200 | [diff] [blame] | 1255 | if (request_module("nf-nat") < 0) { |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 1256 | nfnl_lock(); |
| 1257 | rcu_read_lock(); |
| 1258 | return -EOPNOTSUPP; |
| 1259 | } |
| 1260 | nfnl_lock(); |
| 1261 | rcu_read_lock(); |
| 1262 | if (nfnetlink_parse_nat_setup_hook) |
| 1263 | return -EAGAIN; |
| 1264 | #endif |
| 1265 | return -EOPNOTSUPP; |
| 1266 | } |
| 1267 | |
Patrick McHardy | c7232c9 | 2012-08-26 19:14:06 +0200 | [diff] [blame] | 1268 | err = parse_nat_setup(ct, manip, attr); |
| 1269 | if (err == -EAGAIN) { |
| 1270 | #ifdef CONFIG_MODULES |
| 1271 | rcu_read_unlock(); |
Patrick McHardy | c7232c9 | 2012-08-26 19:14:06 +0200 | [diff] [blame] | 1272 | nfnl_unlock(); |
| 1273 | if (request_module("nf-nat-%u", nf_ct_l3num(ct)) < 0) { |
| 1274 | nfnl_lock(); |
Patrick McHardy | c7232c9 | 2012-08-26 19:14:06 +0200 | [diff] [blame] | 1275 | rcu_read_lock(); |
| 1276 | return -EOPNOTSUPP; |
| 1277 | } |
| 1278 | nfnl_lock(); |
Patrick McHardy | c7232c9 | 2012-08-26 19:14:06 +0200 | [diff] [blame] | 1279 | rcu_read_lock(); |
| 1280 | #else |
| 1281 | err = -EOPNOTSUPP; |
| 1282 | #endif |
| 1283 | } |
| 1284 | return err; |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 1285 | } |
Pablo Neira Ayuso | 6767184 | 2008-10-20 03:34:27 -0700 | [diff] [blame] | 1286 | #endif |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 1287 | |
| 1288 | static int |
Patrick McHardy | 3993832 | 2009-08-25 16:07:58 +0200 | [diff] [blame] | 1289 | 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] | 1290 | { |
| 1291 | unsigned long d; |
Patrick McHardy | 77236b6 | 2007-12-17 22:29:45 -0800 | [diff] [blame] | 1292 | unsigned int status = ntohl(nla_get_be32(cda[CTA_STATUS])); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1293 | d = ct->status ^ status; |
| 1294 | |
| 1295 | if (d & (IPS_EXPECTED|IPS_CONFIRMED|IPS_DYING)) |
| 1296 | /* unchangeable */ |
Pablo Neira Ayuso | 0adf9d6 | 2008-06-09 15:56:20 -0700 | [diff] [blame] | 1297 | return -EBUSY; |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 1298 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1299 | if (d & IPS_SEEN_REPLY && !(status & IPS_SEEN_REPLY)) |
| 1300 | /* SEEN_REPLY bit can only be set */ |
Pablo Neira Ayuso | 0adf9d6 | 2008-06-09 15:56:20 -0700 | [diff] [blame] | 1301 | return -EBUSY; |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 1302 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1303 | if (d & IPS_ASSURED && !(status & IPS_ASSURED)) |
| 1304 | /* ASSURED bit can only be set */ |
Pablo Neira Ayuso | 0adf9d6 | 2008-06-09 15:56:20 -0700 | [diff] [blame] | 1305 | return -EBUSY; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1306 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1307 | /* Be careful here, modifying NAT bits can screw up things, |
| 1308 | * 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] | 1309 | * nf_nat_range. */ |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1310 | ct->status |= status & ~(IPS_NAT_DONE_MASK | IPS_NAT_MASK); |
| 1311 | return 0; |
| 1312 | } |
| 1313 | |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 1314 | static int |
Patrick McHardy | 3993832 | 2009-08-25 16:07:58 +0200 | [diff] [blame] | 1315 | ctnetlink_change_nat(struct nf_conn *ct, const struct nlattr * const cda[]) |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 1316 | { |
| 1317 | #ifdef CONFIG_NF_NAT_NEEDED |
| 1318 | int ret; |
| 1319 | |
| 1320 | if (cda[CTA_NAT_DST]) { |
| 1321 | ret = ctnetlink_parse_nat_setup(ct, |
Patrick McHardy | cbc9f2f | 2011-12-23 13:59:49 +0100 | [diff] [blame] | 1322 | NF_NAT_MANIP_DST, |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 1323 | cda[CTA_NAT_DST]); |
| 1324 | if (ret < 0) |
| 1325 | return ret; |
| 1326 | } |
| 1327 | if (cda[CTA_NAT_SRC]) { |
| 1328 | ret = ctnetlink_parse_nat_setup(ct, |
Patrick McHardy | cbc9f2f | 2011-12-23 13:59:49 +0100 | [diff] [blame] | 1329 | NF_NAT_MANIP_SRC, |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 1330 | cda[CTA_NAT_SRC]); |
| 1331 | if (ret < 0) |
| 1332 | return ret; |
| 1333 | } |
| 1334 | return 0; |
| 1335 | #else |
| 1336 | return -EOPNOTSUPP; |
| 1337 | #endif |
| 1338 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1339 | |
| 1340 | static inline int |
Patrick McHardy | 3993832 | 2009-08-25 16:07:58 +0200 | [diff] [blame] | 1341 | 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] | 1342 | { |
| 1343 | struct nf_conntrack_helper *helper; |
Harald Welte | dc808fe | 2006-03-20 17:56:32 -0800 | [diff] [blame] | 1344 | struct nf_conn_help *help = nfct_help(ct); |
Pablo Neira Ayuso | 29fe1b4 | 2009-04-22 02:26:37 -0700 | [diff] [blame] | 1345 | char *helpname = NULL; |
Pablo Neira Ayuso | ae243be | 2012-06-07 14:19:42 +0200 | [diff] [blame] | 1346 | struct nlattr *helpinfo = NULL; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1347 | int err; |
| 1348 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1349 | /* don't change helper of sibling connections */ |
| 1350 | if (ct->master) |
Pablo Neira Ayuso | 0adf9d6 | 2008-06-09 15:56:20 -0700 | [diff] [blame] | 1351 | return -EBUSY; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1352 | |
Pablo Neira Ayuso | ae243be | 2012-06-07 14:19:42 +0200 | [diff] [blame] | 1353 | err = ctnetlink_parse_help(cda[CTA_HELP], &helpname, &helpinfo); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1354 | if (err < 0) |
| 1355 | return err; |
| 1356 | |
Yasuyuki Kozakai | df293bb | 2007-05-10 14:15:58 -0700 | [diff] [blame] | 1357 | if (!strcmp(helpname, "")) { |
| 1358 | if (help && help->helper) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1359 | /* we had a helper before ... */ |
| 1360 | nf_ct_remove_expectations(ct); |
Stephen Hemminger | a9b3cd7 | 2011-08-01 16:19:00 +0000 | [diff] [blame] | 1361 | RCU_INIT_POINTER(help->helper, NULL); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1362 | } |
Yasuyuki Kozakai | df293bb | 2007-05-10 14:15:58 -0700 | [diff] [blame] | 1363 | |
| 1364 | return 0; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1365 | } |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 1366 | |
Patrick McHardy | 794e687 | 2010-02-03 13:41:29 +0100 | [diff] [blame] | 1367 | helper = __nf_conntrack_helper_find(helpname, nf_ct_l3num(ct), |
| 1368 | nf_ct_protonum(ct)); |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1369 | if (helper == NULL) { |
| 1370 | #ifdef CONFIG_MODULES |
| 1371 | spin_unlock_bh(&nf_conntrack_lock); |
| 1372 | |
| 1373 | if (request_module("nfct-helper-%s", helpname) < 0) { |
| 1374 | spin_lock_bh(&nf_conntrack_lock); |
| 1375 | return -EOPNOTSUPP; |
| 1376 | } |
| 1377 | |
| 1378 | spin_lock_bh(&nf_conntrack_lock); |
Patrick McHardy | 794e687 | 2010-02-03 13:41:29 +0100 | [diff] [blame] | 1379 | helper = __nf_conntrack_helper_find(helpname, nf_ct_l3num(ct), |
| 1380 | nf_ct_protonum(ct)); |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1381 | if (helper) |
| 1382 | return -EAGAIN; |
| 1383 | #endif |
Pablo Neira Ayuso | 0adf9d6 | 2008-06-09 15:56:20 -0700 | [diff] [blame] | 1384 | return -EOPNOTSUPP; |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1385 | } |
Yasuyuki Kozakai | df293bb | 2007-05-10 14:15:58 -0700 | [diff] [blame] | 1386 | |
Yasuyuki Kozakai | ceceae1 | 2007-07-07 22:23:42 -0700 | [diff] [blame] | 1387 | if (help) { |
Pablo Neira Ayuso | ae243be | 2012-06-07 14:19:42 +0200 | [diff] [blame] | 1388 | if (help->helper == helper) { |
| 1389 | /* update private helper data if allowed. */ |
Pablo Neira Ayuso | 7be54ca | 2012-09-21 16:52:08 +0200 | [diff] [blame] | 1390 | if (helper->from_nlattr) |
Pablo Neira Ayuso | ae243be | 2012-06-07 14:19:42 +0200 | [diff] [blame] | 1391 | helper->from_nlattr(helpinfo, ct); |
Yasuyuki Kozakai | ceceae1 | 2007-07-07 22:23:42 -0700 | [diff] [blame] | 1392 | return 0; |
Pablo Neira Ayuso | fd7462d | 2012-06-18 17:29:53 +0200 | [diff] [blame] | 1393 | } else |
Yasuyuki Kozakai | ceceae1 | 2007-07-07 22:23:42 -0700 | [diff] [blame] | 1394 | return -EBUSY; |
Yasuyuki Kozakai | ceceae1 | 2007-07-07 22:23:42 -0700 | [diff] [blame] | 1395 | } |
Yasuyuki Kozakai | df293bb | 2007-05-10 14:15:58 -0700 | [diff] [blame] | 1396 | |
Pablo Neira Ayuso | fd7462d | 2012-06-18 17:29:53 +0200 | [diff] [blame] | 1397 | /* we cannot set a helper for an existing conntrack */ |
| 1398 | return -EOPNOTSUPP; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1399 | } |
| 1400 | |
| 1401 | static inline int |
Patrick McHardy | 3993832 | 2009-08-25 16:07:58 +0200 | [diff] [blame] | 1402 | 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] | 1403 | { |
Patrick McHardy | 77236b6 | 2007-12-17 22:29:45 -0800 | [diff] [blame] | 1404 | u_int32_t timeout = ntohl(nla_get_be32(cda[CTA_TIMEOUT])); |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 1405 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1406 | if (!del_timer(&ct->timeout)) |
| 1407 | return -ETIME; |
| 1408 | |
| 1409 | ct->timeout.expires = jiffies + timeout * HZ; |
| 1410 | add_timer(&ct->timeout); |
| 1411 | |
| 1412 | return 0; |
| 1413 | } |
| 1414 | |
Patrick McHardy | d0b0268 | 2010-02-10 15:38:33 +0100 | [diff] [blame] | 1415 | static const struct nla_policy protoinfo_policy[CTA_PROTOINFO_MAX+1] = { |
| 1416 | [CTA_PROTOINFO_TCP] = { .type = NLA_NESTED }, |
| 1417 | [CTA_PROTOINFO_DCCP] = { .type = NLA_NESTED }, |
| 1418 | [CTA_PROTOINFO_SCTP] = { .type = NLA_NESTED }, |
| 1419 | }; |
| 1420 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1421 | static inline int |
Patrick McHardy | 3993832 | 2009-08-25 16:07:58 +0200 | [diff] [blame] | 1422 | 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] | 1423 | { |
Patrick McHardy | 3993832 | 2009-08-25 16:07:58 +0200 | [diff] [blame] | 1424 | const struct nlattr *attr = cda[CTA_PROTOINFO]; |
| 1425 | struct nlattr *tb[CTA_PROTOINFO_MAX+1]; |
Martin Josefsson | 605dcad | 2006-11-29 02:35:06 +0100 | [diff] [blame] | 1426 | struct nf_conntrack_l4proto *l4proto; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1427 | int err = 0; |
| 1428 | |
Patrick McHardy | d0b0268 | 2010-02-10 15:38:33 +0100 | [diff] [blame] | 1429 | nla_parse_nested(tb, CTA_PROTOINFO_MAX, attr, protoinfo_policy); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1430 | |
Florian Westphal | cd91566 | 2009-03-18 17:28:37 +0100 | [diff] [blame] | 1431 | rcu_read_lock(); |
| 1432 | 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] | 1433 | if (l4proto->from_nlattr) |
| 1434 | err = l4proto->from_nlattr(tb, ct); |
Florian Westphal | cd91566 | 2009-03-18 17:28:37 +0100 | [diff] [blame] | 1435 | rcu_read_unlock(); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1436 | |
| 1437 | return err; |
| 1438 | } |
| 1439 | |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1440 | #ifdef CONFIG_NF_NAT_NEEDED |
Patrick McHardy | d0b0268 | 2010-02-10 15:38:33 +0100 | [diff] [blame] | 1441 | static const struct nla_policy nat_seq_policy[CTA_NAT_SEQ_MAX+1] = { |
| 1442 | [CTA_NAT_SEQ_CORRECTION_POS] = { .type = NLA_U32 }, |
| 1443 | [CTA_NAT_SEQ_OFFSET_BEFORE] = { .type = NLA_U32 }, |
| 1444 | [CTA_NAT_SEQ_OFFSET_AFTER] = { .type = NLA_U32 }, |
| 1445 | }; |
| 1446 | |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1447 | static inline int |
Patrick McHardy | 3993832 | 2009-08-25 16:07:58 +0200 | [diff] [blame] | 1448 | change_nat_seq_adj(struct nf_nat_seq *natseq, const struct nlattr * const attr) |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1449 | { |
| 1450 | struct nlattr *cda[CTA_NAT_SEQ_MAX+1]; |
| 1451 | |
Patrick McHardy | d0b0268 | 2010-02-10 15:38:33 +0100 | [diff] [blame] | 1452 | nla_parse_nested(cda, CTA_NAT_SEQ_MAX, attr, nat_seq_policy); |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1453 | |
| 1454 | if (!cda[CTA_NAT_SEQ_CORRECTION_POS]) |
| 1455 | return -EINVAL; |
| 1456 | |
| 1457 | natseq->correction_pos = |
Patrick McHardy | 77236b6 | 2007-12-17 22:29:45 -0800 | [diff] [blame] | 1458 | ntohl(nla_get_be32(cda[CTA_NAT_SEQ_CORRECTION_POS])); |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1459 | |
| 1460 | if (!cda[CTA_NAT_SEQ_OFFSET_BEFORE]) |
| 1461 | return -EINVAL; |
| 1462 | |
| 1463 | natseq->offset_before = |
Patrick McHardy | 77236b6 | 2007-12-17 22:29:45 -0800 | [diff] [blame] | 1464 | ntohl(nla_get_be32(cda[CTA_NAT_SEQ_OFFSET_BEFORE])); |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1465 | |
| 1466 | if (!cda[CTA_NAT_SEQ_OFFSET_AFTER]) |
| 1467 | return -EINVAL; |
| 1468 | |
| 1469 | natseq->offset_after = |
Patrick McHardy | 77236b6 | 2007-12-17 22:29:45 -0800 | [diff] [blame] | 1470 | ntohl(nla_get_be32(cda[CTA_NAT_SEQ_OFFSET_AFTER])); |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1471 | |
| 1472 | return 0; |
| 1473 | } |
| 1474 | |
| 1475 | static int |
Patrick McHardy | 3993832 | 2009-08-25 16:07:58 +0200 | [diff] [blame] | 1476 | ctnetlink_change_nat_seq_adj(struct nf_conn *ct, |
| 1477 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1478 | { |
| 1479 | int ret = 0; |
| 1480 | struct nf_conn_nat *nat = nfct_nat(ct); |
| 1481 | |
| 1482 | if (!nat) |
| 1483 | return 0; |
| 1484 | |
| 1485 | if (cda[CTA_NAT_SEQ_ADJ_ORIG]) { |
| 1486 | ret = change_nat_seq_adj(&nat->seq[IP_CT_DIR_ORIGINAL], |
| 1487 | cda[CTA_NAT_SEQ_ADJ_ORIG]); |
| 1488 | if (ret < 0) |
| 1489 | return ret; |
| 1490 | |
| 1491 | ct->status |= IPS_SEQ_ADJUST; |
| 1492 | } |
| 1493 | |
| 1494 | if (cda[CTA_NAT_SEQ_ADJ_REPLY]) { |
| 1495 | ret = change_nat_seq_adj(&nat->seq[IP_CT_DIR_REPLY], |
| 1496 | cda[CTA_NAT_SEQ_ADJ_REPLY]); |
| 1497 | if (ret < 0) |
| 1498 | return ret; |
| 1499 | |
| 1500 | ct->status |= IPS_SEQ_ADJUST; |
| 1501 | } |
| 1502 | |
| 1503 | return 0; |
| 1504 | } |
| 1505 | #endif |
| 1506 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1507 | static int |
Patrick McHardy | 3993832 | 2009-08-25 16:07:58 +0200 | [diff] [blame] | 1508 | ctnetlink_change_conntrack(struct nf_conn *ct, |
| 1509 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1510 | { |
| 1511 | int err; |
| 1512 | |
Pablo Neira Ayuso | e098360 | 2009-03-16 15:27:22 +0100 | [diff] [blame] | 1513 | /* only allow NAT changes and master assignation for new conntracks */ |
| 1514 | if (cda[CTA_NAT_SRC] || cda[CTA_NAT_DST] || cda[CTA_TUPLE_MASTER]) |
| 1515 | return -EOPNOTSUPP; |
| 1516 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1517 | if (cda[CTA_HELP]) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1518 | err = ctnetlink_change_helper(ct, cda); |
| 1519 | if (err < 0) |
| 1520 | return err; |
| 1521 | } |
| 1522 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1523 | if (cda[CTA_TIMEOUT]) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1524 | err = ctnetlink_change_timeout(ct, cda); |
| 1525 | if (err < 0) |
| 1526 | return err; |
| 1527 | } |
| 1528 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1529 | if (cda[CTA_STATUS]) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1530 | err = ctnetlink_change_status(ct, cda); |
| 1531 | if (err < 0) |
| 1532 | return err; |
| 1533 | } |
| 1534 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1535 | if (cda[CTA_PROTOINFO]) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1536 | err = ctnetlink_change_protoinfo(ct, cda); |
| 1537 | if (err < 0) |
| 1538 | return err; |
| 1539 | } |
| 1540 | |
Martin Josefsson | bcd1e83 | 2006-04-01 02:23:21 -0800 | [diff] [blame] | 1541 | #if defined(CONFIG_NF_CONNTRACK_MARK) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1542 | if (cda[CTA_MARK]) |
Patrick McHardy | 77236b6 | 2007-12-17 22:29:45 -0800 | [diff] [blame] | 1543 | ct->mark = ntohl(nla_get_be32(cda[CTA_MARK])); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1544 | #endif |
| 1545 | |
Pablo Neira Ayuso | 13eae15 | 2007-12-17 22:28:00 -0800 | [diff] [blame] | 1546 | #ifdef CONFIG_NF_NAT_NEEDED |
| 1547 | if (cda[CTA_NAT_SEQ_ADJ_ORIG] || cda[CTA_NAT_SEQ_ADJ_REPLY]) { |
| 1548 | err = ctnetlink_change_nat_seq_adj(ct, cda); |
| 1549 | if (err < 0) |
| 1550 | return err; |
| 1551 | } |
| 1552 | #endif |
| 1553 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1554 | return 0; |
| 1555 | } |
| 1556 | |
Pablo Neira Ayuso | f0a3c08 | 2009-03-16 15:28:09 +0100 | [diff] [blame] | 1557 | static struct nf_conn * |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 1558 | ctnetlink_create_conntrack(struct net *net, u16 zone, |
Alexey Dobriyan | 9592a5c | 2010-01-13 16:04:18 +0100 | [diff] [blame] | 1559 | const struct nlattr * const cda[], |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1560 | struct nf_conntrack_tuple *otuple, |
Pablo Neira Ayuso | 5faa1f4 | 2007-09-28 14:43:53 -0700 | [diff] [blame] | 1561 | struct nf_conntrack_tuple *rtuple, |
Pablo Neira Ayuso | 7ec4749 | 2009-03-16 15:25:46 +0100 | [diff] [blame] | 1562 | u8 u3) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1563 | { |
| 1564 | struct nf_conn *ct; |
| 1565 | int err = -EINVAL; |
Yasuyuki Kozakai | ceceae1 | 2007-07-07 22:23:42 -0700 | [diff] [blame] | 1566 | struct nf_conntrack_helper *helper; |
Pablo Neira Ayuso | 315c34d | 2011-04-21 10:55:07 +0200 | [diff] [blame] | 1567 | struct nf_conn_tstamp *tstamp; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1568 | |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 1569 | ct = nf_conntrack_alloc(net, zone, otuple, rtuple, GFP_ATOMIC); |
Julia Lawall | cd7fcbf | 2009-01-12 00:06:08 +0000 | [diff] [blame] | 1570 | if (IS_ERR(ct)) |
Pablo Neira Ayuso | f0a3c08 | 2009-03-16 15:28:09 +0100 | [diff] [blame] | 1571 | return ERR_PTR(-ENOMEM); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1572 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1573 | if (!cda[CTA_TIMEOUT]) |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1574 | goto err1; |
Patrick McHardy | 77236b6 | 2007-12-17 22:29:45 -0800 | [diff] [blame] | 1575 | ct->timeout.expires = ntohl(nla_get_be32(cda[CTA_TIMEOUT])); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1576 | |
| 1577 | ct->timeout.expires = jiffies + ct->timeout.expires * HZ; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1578 | |
Patrick McHardy | 58a3c9b | 2008-01-31 04:36:54 -0800 | [diff] [blame] | 1579 | rcu_read_lock(); |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1580 | if (cda[CTA_HELP]) { |
Pablo Neira Ayuso | 29fe1b4 | 2009-04-22 02:26:37 -0700 | [diff] [blame] | 1581 | char *helpname = NULL; |
Pablo Neira Ayuso | ae243be | 2012-06-07 14:19:42 +0200 | [diff] [blame] | 1582 | struct nlattr *helpinfo = NULL; |
| 1583 | |
| 1584 | err = ctnetlink_parse_help(cda[CTA_HELP], &helpname, &helpinfo); |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1585 | if (err < 0) |
| 1586 | goto err2; |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1587 | |
Patrick McHardy | 794e687 | 2010-02-03 13:41:29 +0100 | [diff] [blame] | 1588 | helper = __nf_conntrack_helper_find(helpname, nf_ct_l3num(ct), |
| 1589 | nf_ct_protonum(ct)); |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1590 | if (helper == NULL) { |
| 1591 | rcu_read_unlock(); |
| 1592 | #ifdef CONFIG_MODULES |
| 1593 | if (request_module("nfct-helper-%s", helpname) < 0) { |
| 1594 | err = -EOPNOTSUPP; |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1595 | goto err1; |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1596 | } |
| 1597 | |
| 1598 | rcu_read_lock(); |
Patrick McHardy | 794e687 | 2010-02-03 13:41:29 +0100 | [diff] [blame] | 1599 | helper = __nf_conntrack_helper_find(helpname, |
| 1600 | nf_ct_l3num(ct), |
| 1601 | nf_ct_protonum(ct)); |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1602 | if (helper) { |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1603 | err = -EAGAIN; |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1604 | goto err2; |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1605 | } |
| 1606 | rcu_read_unlock(); |
| 1607 | #endif |
| 1608 | err = -EOPNOTSUPP; |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1609 | goto err1; |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1610 | } else { |
| 1611 | struct nf_conn_help *help; |
| 1612 | |
Pablo Neira Ayuso | 1afc567 | 2012-06-07 12:11:50 +0200 | [diff] [blame] | 1613 | help = nf_ct_helper_ext_add(ct, helper, GFP_ATOMIC); |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1614 | if (help == NULL) { |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1615 | err = -ENOMEM; |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1616 | goto err2; |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1617 | } |
Pablo Neira Ayuso | ae243be | 2012-06-07 14:19:42 +0200 | [diff] [blame] | 1618 | /* set private helper data if allowed. */ |
Pablo Neira Ayuso | 7be54ca | 2012-09-21 16:52:08 +0200 | [diff] [blame] | 1619 | if (helper->from_nlattr) |
Pablo Neira Ayuso | ae243be | 2012-06-07 14:19:42 +0200 | [diff] [blame] | 1620 | helper->from_nlattr(helpinfo, ct); |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1621 | |
| 1622 | /* not in hash table yet so not strictly necessary */ |
Stephen Hemminger | a9b3cd7 | 2011-08-01 16:19:00 +0000 | [diff] [blame] | 1623 | RCU_INIT_POINTER(help->helper, helper); |
Pablo Neira Ayuso | 226c0c0 | 2008-11-18 11:54:05 +0100 | [diff] [blame] | 1624 | } |
| 1625 | } else { |
| 1626 | /* try an implicit helper assignation */ |
Patrick McHardy | b2a15a6 | 2010-02-03 14:13:03 +0100 | [diff] [blame] | 1627 | err = __nf_ct_try_assign_helper(ct, NULL, GFP_ATOMIC); |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1628 | if (err < 0) |
| 1629 | goto err2; |
Patrick McHarrdy | 3c158f7 | 2007-06-05 12:55:27 -0700 | [diff] [blame] | 1630 | } |
Yasuyuki Kozakai | dafc741 | 2006-11-27 10:25:32 -0800 | [diff] [blame] | 1631 | |
Pablo Neira Ayuso | a88e22a | 2010-02-19 14:24:39 +0100 | [diff] [blame] | 1632 | if (cda[CTA_NAT_SRC] || cda[CTA_NAT_DST]) { |
| 1633 | err = ctnetlink_change_nat(ct, cda); |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1634 | if (err < 0) |
| 1635 | goto err2; |
Pablo Neira Ayuso | 1575e7e | 2008-08-18 21:30:55 -0700 | [diff] [blame] | 1636 | } |
| 1637 | |
Pablo Neira Ayuso | a88e22a | 2010-02-19 14:24:39 +0100 | [diff] [blame] | 1638 | nf_ct_acct_ext_add(ct, GFP_ATOMIC); |
Pablo Neira Ayuso | a992ca2 | 2011-01-19 16:00:07 +0100 | [diff] [blame] | 1639 | nf_ct_tstamp_ext_add(ct, GFP_ATOMIC); |
Pablo Neira Ayuso | a88e22a | 2010-02-19 14:24:39 +0100 | [diff] [blame] | 1640 | nf_ct_ecache_ext_add(ct, 0, 0, GFP_ATOMIC); |
Florian Westphal | c539f01 | 2013-01-11 06:30:44 +0000 | [diff] [blame] | 1641 | nf_ct_labels_ext_add(ct); |
| 1642 | |
Pablo Neira Ayuso | a88e22a | 2010-02-19 14:24:39 +0100 | [diff] [blame] | 1643 | /* we must add conntrack extensions before confirmation. */ |
| 1644 | ct->status |= IPS_CONFIRMED; |
| 1645 | |
| 1646 | if (cda[CTA_STATUS]) { |
| 1647 | err = ctnetlink_change_status(ct, cda); |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1648 | if (err < 0) |
| 1649 | goto err2; |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 1650 | } |
| 1651 | |
Pablo Neira Ayuso | c969aa7 | 2009-02-09 14:33:57 -0800 | [diff] [blame] | 1652 | #ifdef CONFIG_NF_NAT_NEEDED |
| 1653 | if (cda[CTA_NAT_SEQ_ADJ_ORIG] || cda[CTA_NAT_SEQ_ADJ_REPLY]) { |
| 1654 | err = ctnetlink_change_nat_seq_adj(ct, cda); |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1655 | if (err < 0) |
| 1656 | goto err2; |
Pablo Neira Ayuso | c969aa7 | 2009-02-09 14:33:57 -0800 | [diff] [blame] | 1657 | } |
| 1658 | #endif |
| 1659 | |
Changli Gao | e5fc9e7 | 2010-11-12 17:33:17 +0100 | [diff] [blame] | 1660 | memset(&ct->proto, 0, sizeof(ct->proto)); |
Pablo Neira Ayuso | 1575e7e | 2008-08-18 21:30:55 -0700 | [diff] [blame] | 1661 | if (cda[CTA_PROTOINFO]) { |
| 1662 | err = ctnetlink_change_protoinfo(ct, cda); |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1663 | if (err < 0) |
| 1664 | goto err2; |
Pablo Neira Ayuso | 1575e7e | 2008-08-18 21:30:55 -0700 | [diff] [blame] | 1665 | } |
| 1666 | |
Pablo Neira Ayuso | 1575e7e | 2008-08-18 21:30:55 -0700 | [diff] [blame] | 1667 | #if defined(CONFIG_NF_CONNTRACK_MARK) |
| 1668 | if (cda[CTA_MARK]) |
| 1669 | ct->mark = ntohl(nla_get_be32(cda[CTA_MARK])); |
| 1670 | #endif |
| 1671 | |
Pablo Neira Ayuso | 5faa1f4 | 2007-09-28 14:43:53 -0700 | [diff] [blame] | 1672 | /* setup master conntrack: this is a confirmed expectation */ |
Pablo Neira Ayuso | 7ec4749 | 2009-03-16 15:25:46 +0100 | [diff] [blame] | 1673 | if (cda[CTA_TUPLE_MASTER]) { |
| 1674 | struct nf_conntrack_tuple master; |
| 1675 | struct nf_conntrack_tuple_hash *master_h; |
| 1676 | struct nf_conn *master_ct; |
| 1677 | |
| 1678 | err = ctnetlink_parse_tuple(cda, &master, CTA_TUPLE_MASTER, u3); |
| 1679 | if (err < 0) |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1680 | goto err2; |
Pablo Neira Ayuso | 7ec4749 | 2009-03-16 15:25:46 +0100 | [diff] [blame] | 1681 | |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 1682 | master_h = nf_conntrack_find_get(net, zone, &master); |
Pablo Neira Ayuso | 7ec4749 | 2009-03-16 15:25:46 +0100 | [diff] [blame] | 1683 | if (master_h == NULL) { |
| 1684 | err = -ENOENT; |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1685 | goto err2; |
Pablo Neira Ayuso | 7ec4749 | 2009-03-16 15:25:46 +0100 | [diff] [blame] | 1686 | } |
| 1687 | master_ct = nf_ct_tuplehash_to_ctrack(master_h); |
Pablo Neira Ayuso | f2a8900 | 2007-12-12 10:34:29 -0800 | [diff] [blame] | 1688 | __set_bit(IPS_EXPECTED_BIT, &ct->status); |
Pablo Neira Ayuso | 5faa1f4 | 2007-09-28 14:43:53 -0700 | [diff] [blame] | 1689 | ct->master = master_ct; |
Pablo Neira Ayuso | f2a8900 | 2007-12-12 10:34:29 -0800 | [diff] [blame] | 1690 | } |
Pablo Neira Ayuso | 315c34d | 2011-04-21 10:55:07 +0200 | [diff] [blame] | 1691 | tstamp = nf_conn_tstamp_find(ct); |
| 1692 | if (tstamp) |
| 1693 | tstamp->start = ktime_to_ns(ktime_get_real()); |
Pablo Neira Ayuso | 5faa1f4 | 2007-09-28 14:43:53 -0700 | [diff] [blame] | 1694 | |
Jozsef Kadlecsik | 7d367e0 | 2012-02-24 11:45:49 +0100 | [diff] [blame] | 1695 | err = nf_conntrack_hash_check_insert(ct); |
| 1696 | if (err < 0) |
| 1697 | goto err2; |
| 1698 | |
Patrick McHardy | 58a3c9b | 2008-01-31 04:36:54 -0800 | [diff] [blame] | 1699 | rcu_read_unlock(); |
Yasuyuki Kozakai | dafc741 | 2006-11-27 10:25:32 -0800 | [diff] [blame] | 1700 | |
Pablo Neira Ayuso | f0a3c08 | 2009-03-16 15:28:09 +0100 | [diff] [blame] | 1701 | return ct; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1702 | |
Patrick McHardy | 0f5b3e8 | 2009-03-18 17:36:40 +0100 | [diff] [blame] | 1703 | err2: |
| 1704 | rcu_read_unlock(); |
| 1705 | err1: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1706 | nf_conntrack_free(ct); |
Pablo Neira Ayuso | f0a3c08 | 2009-03-16 15:28:09 +0100 | [diff] [blame] | 1707 | return ERR_PTR(err); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1708 | } |
| 1709 | |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 1710 | static int |
| 1711 | ctnetlink_new_conntrack(struct sock *ctnl, struct sk_buff *skb, |
Patrick McHardy | 3993832 | 2009-08-25 16:07:58 +0200 | [diff] [blame] | 1712 | const struct nlmsghdr *nlh, |
| 1713 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1714 | { |
Alexey Dobriyan | 9592a5c | 2010-01-13 16:04:18 +0100 | [diff] [blame] | 1715 | struct net *net = sock_net(ctnl); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1716 | struct nf_conntrack_tuple otuple, rtuple; |
| 1717 | struct nf_conntrack_tuple_hash *h = NULL; |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 1718 | struct nfgenmsg *nfmsg = nlmsg_data(nlh); |
Jozsef Kadlecsik | 7d367e0 | 2012-02-24 11:45:49 +0100 | [diff] [blame] | 1719 | struct nf_conn *ct; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1720 | u_int8_t u3 = nfmsg->nfgen_family; |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 1721 | u16 zone; |
| 1722 | int err; |
| 1723 | |
| 1724 | err = ctnetlink_parse_zone(cda[CTA_ZONE], &zone); |
| 1725 | if (err < 0) |
| 1726 | return err; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1727 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1728 | if (cda[CTA_TUPLE_ORIG]) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1729 | err = ctnetlink_parse_tuple(cda, &otuple, CTA_TUPLE_ORIG, u3); |
| 1730 | if (err < 0) |
| 1731 | return err; |
| 1732 | } |
| 1733 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1734 | if (cda[CTA_TUPLE_REPLY]) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1735 | err = ctnetlink_parse_tuple(cda, &rtuple, CTA_TUPLE_REPLY, u3); |
| 1736 | if (err < 0) |
| 1737 | return err; |
| 1738 | } |
| 1739 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1740 | if (cda[CTA_TUPLE_ORIG]) |
Jozsef Kadlecsik | 7d367e0 | 2012-02-24 11:45:49 +0100 | [diff] [blame] | 1741 | h = nf_conntrack_find_get(net, zone, &otuple); |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 1742 | else if (cda[CTA_TUPLE_REPLY]) |
Jozsef Kadlecsik | 7d367e0 | 2012-02-24 11:45:49 +0100 | [diff] [blame] | 1743 | h = nf_conntrack_find_get(net, zone, &rtuple); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1744 | |
| 1745 | if (h == NULL) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1746 | err = -ENOENT; |
Pablo Neira Ayuso | f0a3c08 | 2009-03-16 15:28:09 +0100 | [diff] [blame] | 1747 | if (nlh->nlmsg_flags & NLM_F_CREATE) { |
Pablo Neira Ayuso | fecc113 | 2009-05-05 17:48:26 +0200 | [diff] [blame] | 1748 | enum ip_conntrack_events events; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1749 | |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 1750 | ct = ctnetlink_create_conntrack(net, zone, cda, &otuple, |
Pablo Neira Ayuso | f0a3c08 | 2009-03-16 15:28:09 +0100 | [diff] [blame] | 1751 | &rtuple, u3); |
Jozsef Kadlecsik | 7d367e0 | 2012-02-24 11:45:49 +0100 | [diff] [blame] | 1752 | if (IS_ERR(ct)) |
| 1753 | return PTR_ERR(ct); |
| 1754 | |
Pablo Neira Ayuso | f0a3c08 | 2009-03-16 15:28:09 +0100 | [diff] [blame] | 1755 | err = 0; |
Pablo Neira Ayuso | fecc113 | 2009-05-05 17:48:26 +0200 | [diff] [blame] | 1756 | if (test_bit(IPS_EXPECTED_BIT, &ct->status)) |
| 1757 | events = IPCT_RELATED; |
| 1758 | else |
| 1759 | events = IPCT_NEW; |
| 1760 | |
Patrick McHardy | 858b3133 | 2010-02-03 13:48:53 +0100 | [diff] [blame] | 1761 | nf_conntrack_eventmask_report((1 << IPCT_REPLY) | |
| 1762 | (1 << IPCT_ASSURED) | |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 1763 | (1 << IPCT_HELPER) | |
| 1764 | (1 << IPCT_PROTOINFO) | |
| 1765 | (1 << IPCT_NATSEQADJ) | |
| 1766 | (1 << IPCT_MARK) | events, |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 1767 | ct, NETLINK_CB(skb).portid, |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 1768 | nlmsg_report(nlh)); |
Pablo Neira Ayuso | f0a3c08 | 2009-03-16 15:28:09 +0100 | [diff] [blame] | 1769 | nf_ct_put(ct); |
Jozsef Kadlecsik | 7d367e0 | 2012-02-24 11:45:49 +0100 | [diff] [blame] | 1770 | } |
Pablo Neira Ayuso | 5faa1f4 | 2007-09-28 14:43:53 -0700 | [diff] [blame] | 1771 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1772 | return err; |
| 1773 | } |
| 1774 | /* implicit 'else' */ |
| 1775 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1776 | err = -EEXIST; |
Jozsef Kadlecsik | 7d367e0 | 2012-02-24 11:45:49 +0100 | [diff] [blame] | 1777 | ct = nf_ct_tuplehash_to_ctrack(h); |
Pablo Neira Ayuso | ff4ca82 | 2007-08-07 18:11:26 -0700 | [diff] [blame] | 1778 | if (!(nlh->nlmsg_flags & NLM_F_EXCL)) { |
Jozsef Kadlecsik | 7d367e0 | 2012-02-24 11:45:49 +0100 | [diff] [blame] | 1779 | spin_lock_bh(&nf_conntrack_lock); |
Pablo Neira Ayuso | 19abb7b | 2008-11-18 11:56:20 +0100 | [diff] [blame] | 1780 | err = ctnetlink_change_conntrack(ct, cda); |
Jozsef Kadlecsik | 7d367e0 | 2012-02-24 11:45:49 +0100 | [diff] [blame] | 1781 | spin_unlock_bh(&nf_conntrack_lock); |
Pablo Neira Ayuso | 19abb7b | 2008-11-18 11:56:20 +0100 | [diff] [blame] | 1782 | if (err == 0) { |
Patrick McHardy | 858b3133 | 2010-02-03 13:48:53 +0100 | [diff] [blame] | 1783 | nf_conntrack_eventmask_report((1 << IPCT_REPLY) | |
| 1784 | (1 << IPCT_ASSURED) | |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 1785 | (1 << IPCT_HELPER) | |
| 1786 | (1 << IPCT_PROTOINFO) | |
| 1787 | (1 << IPCT_NATSEQADJ) | |
| 1788 | (1 << IPCT_MARK), |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 1789 | ct, NETLINK_CB(skb).portid, |
Pablo Neira Ayuso | a0891aa | 2009-06-13 12:26:29 +0200 | [diff] [blame] | 1790 | nlmsg_report(nlh)); |
Jozsef Kadlecsik | 7d367e0 | 2012-02-24 11:45:49 +0100 | [diff] [blame] | 1791 | } |
Pablo Neira Ayuso | ff4ca82 | 2007-08-07 18:11:26 -0700 | [diff] [blame] | 1792 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1793 | |
Jozsef Kadlecsik | 7d367e0 | 2012-02-24 11:45:49 +0100 | [diff] [blame] | 1794 | nf_ct_put(ct); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 1795 | return err; |
| 1796 | } |
| 1797 | |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 1798 | static int |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 1799 | 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] | 1800 | __u16 cpu, const struct ip_conntrack_stat *st) |
| 1801 | { |
| 1802 | struct nlmsghdr *nlh; |
| 1803 | struct nfgenmsg *nfmsg; |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 1804 | unsigned int flags = portid ? NLM_F_MULTI : 0, event; |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 1805 | |
| 1806 | event = (NFNL_SUBSYS_CTNETLINK << 8 | IPCTNL_MSG_CT_GET_STATS_CPU); |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 1807 | nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags); |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 1808 | if (nlh == NULL) |
| 1809 | goto nlmsg_failure; |
| 1810 | |
| 1811 | nfmsg = nlmsg_data(nlh); |
| 1812 | nfmsg->nfgen_family = AF_UNSPEC; |
| 1813 | nfmsg->version = NFNETLINK_V0; |
| 1814 | nfmsg->res_id = htons(cpu); |
| 1815 | |
| 1816 | if (nla_put_be32(skb, CTA_STATS_SEARCHED, htonl(st->searched)) || |
| 1817 | nla_put_be32(skb, CTA_STATS_FOUND, htonl(st->found)) || |
| 1818 | nla_put_be32(skb, CTA_STATS_NEW, htonl(st->new)) || |
| 1819 | nla_put_be32(skb, CTA_STATS_INVALID, htonl(st->invalid)) || |
| 1820 | nla_put_be32(skb, CTA_STATS_IGNORE, htonl(st->ignore)) || |
| 1821 | nla_put_be32(skb, CTA_STATS_DELETE, htonl(st->delete)) || |
| 1822 | nla_put_be32(skb, CTA_STATS_DELETE_LIST, htonl(st->delete_list)) || |
| 1823 | nla_put_be32(skb, CTA_STATS_INSERT, htonl(st->insert)) || |
| 1824 | nla_put_be32(skb, CTA_STATS_INSERT_FAILED, |
| 1825 | htonl(st->insert_failed)) || |
| 1826 | nla_put_be32(skb, CTA_STATS_DROP, htonl(st->drop)) || |
| 1827 | nla_put_be32(skb, CTA_STATS_EARLY_DROP, htonl(st->early_drop)) || |
| 1828 | nla_put_be32(skb, CTA_STATS_ERROR, htonl(st->error)) || |
| 1829 | nla_put_be32(skb, CTA_STATS_SEARCH_RESTART, |
| 1830 | htonl(st->search_restart))) |
| 1831 | goto nla_put_failure; |
| 1832 | |
| 1833 | nlmsg_end(skb, nlh); |
| 1834 | return skb->len; |
| 1835 | |
| 1836 | nla_put_failure: |
| 1837 | nlmsg_failure: |
| 1838 | nlmsg_cancel(skb, nlh); |
| 1839 | return -1; |
| 1840 | } |
| 1841 | |
| 1842 | static int |
| 1843 | ctnetlink_ct_stat_cpu_dump(struct sk_buff *skb, struct netlink_callback *cb) |
| 1844 | { |
| 1845 | int cpu; |
| 1846 | struct net *net = sock_net(skb->sk); |
| 1847 | |
| 1848 | if (cb->args[0] == nr_cpu_ids) |
| 1849 | return 0; |
| 1850 | |
| 1851 | for (cpu = cb->args[0]; cpu < nr_cpu_ids; cpu++) { |
| 1852 | const struct ip_conntrack_stat *st; |
| 1853 | |
| 1854 | if (!cpu_possible(cpu)) |
| 1855 | continue; |
| 1856 | |
| 1857 | st = per_cpu_ptr(net->ct.stat, cpu); |
| 1858 | if (ctnetlink_ct_stat_cpu_fill_info(skb, |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 1859 | NETLINK_CB(cb->skb).portid, |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 1860 | cb->nlh->nlmsg_seq, |
| 1861 | cpu, st) < 0) |
| 1862 | break; |
| 1863 | } |
| 1864 | cb->args[0] = cpu; |
| 1865 | |
| 1866 | return skb->len; |
| 1867 | } |
| 1868 | |
| 1869 | static int |
| 1870 | ctnetlink_stat_ct_cpu(struct sock *ctnl, struct sk_buff *skb, |
| 1871 | const struct nlmsghdr *nlh, |
| 1872 | const struct nlattr * const cda[]) |
| 1873 | { |
| 1874 | if (nlh->nlmsg_flags & NLM_F_DUMP) { |
| 1875 | struct netlink_dump_control c = { |
| 1876 | .dump = ctnetlink_ct_stat_cpu_dump, |
| 1877 | }; |
| 1878 | return netlink_dump_start(ctnl, skb, nlh, &c); |
| 1879 | } |
| 1880 | |
| 1881 | return 0; |
| 1882 | } |
| 1883 | |
| 1884 | static int |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 1885 | 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] | 1886 | struct net *net) |
| 1887 | { |
| 1888 | struct nlmsghdr *nlh; |
| 1889 | struct nfgenmsg *nfmsg; |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 1890 | unsigned int flags = portid ? NLM_F_MULTI : 0, event; |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 1891 | unsigned int nr_conntracks = atomic_read(&net->ct.count); |
| 1892 | |
| 1893 | event = (NFNL_SUBSYS_CTNETLINK << 8 | IPCTNL_MSG_CT_GET_STATS); |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 1894 | nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags); |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 1895 | if (nlh == NULL) |
| 1896 | goto nlmsg_failure; |
| 1897 | |
| 1898 | nfmsg = nlmsg_data(nlh); |
| 1899 | nfmsg->nfgen_family = AF_UNSPEC; |
| 1900 | nfmsg->version = NFNETLINK_V0; |
| 1901 | nfmsg->res_id = 0; |
| 1902 | |
| 1903 | if (nla_put_be32(skb, CTA_STATS_GLOBAL_ENTRIES, htonl(nr_conntracks))) |
| 1904 | goto nla_put_failure; |
| 1905 | |
| 1906 | nlmsg_end(skb, nlh); |
| 1907 | return skb->len; |
| 1908 | |
| 1909 | nla_put_failure: |
| 1910 | nlmsg_failure: |
| 1911 | nlmsg_cancel(skb, nlh); |
| 1912 | return -1; |
| 1913 | } |
| 1914 | |
| 1915 | static int |
| 1916 | ctnetlink_stat_ct(struct sock *ctnl, struct sk_buff *skb, |
| 1917 | const struct nlmsghdr *nlh, |
| 1918 | const struct nlattr * const cda[]) |
| 1919 | { |
| 1920 | struct sk_buff *skb2; |
| 1921 | int err; |
| 1922 | |
| 1923 | skb2 = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| 1924 | if (skb2 == NULL) |
| 1925 | return -ENOMEM; |
| 1926 | |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 1927 | err = ctnetlink_stat_ct_fill_info(skb2, NETLINK_CB(skb).portid, |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 1928 | nlh->nlmsg_seq, |
| 1929 | NFNL_MSG_TYPE(nlh->nlmsg_type), |
| 1930 | sock_net(skb->sk)); |
| 1931 | if (err <= 0) |
| 1932 | goto free; |
| 1933 | |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 1934 | err = netlink_unicast(ctnl, skb2, NETLINK_CB(skb).portid, MSG_DONTWAIT); |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 1935 | if (err < 0) |
| 1936 | goto out; |
| 1937 | |
| 1938 | return 0; |
| 1939 | |
| 1940 | free: |
| 1941 | kfree_skb(skb2); |
| 1942 | out: |
| 1943 | /* this avoids a loop in nfnetlink. */ |
| 1944 | return err == -EAGAIN ? -ENOBUFS : err; |
| 1945 | } |
| 1946 | |
Pablo Neira Ayuso | 7c62234 | 2012-06-19 02:10:57 +0200 | [diff] [blame] | 1947 | #ifdef CONFIG_NETFILTER_NETLINK_QUEUE_CT |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 1948 | static size_t |
| 1949 | ctnetlink_nfqueue_build_size(const struct nf_conn *ct) |
| 1950 | { |
| 1951 | return 3 * nla_total_size(0) /* CTA_TUPLE_ORIG|REPL|MASTER */ |
| 1952 | + 3 * nla_total_size(0) /* CTA_TUPLE_IP */ |
| 1953 | + 3 * nla_total_size(0) /* CTA_TUPLE_PROTO */ |
| 1954 | + 3 * nla_total_size(sizeof(u_int8_t)) /* CTA_PROTO_NUM */ |
| 1955 | + nla_total_size(sizeof(u_int32_t)) /* CTA_ID */ |
| 1956 | + nla_total_size(sizeof(u_int32_t)) /* CTA_STATUS */ |
| 1957 | + nla_total_size(sizeof(u_int32_t)) /* CTA_TIMEOUT */ |
| 1958 | + nla_total_size(0) /* CTA_PROTOINFO */ |
| 1959 | + nla_total_size(0) /* CTA_HELP */ |
| 1960 | + nla_total_size(NF_CT_HELPER_NAME_LEN) /* CTA_HELP_NAME */ |
| 1961 | + ctnetlink_secctx_size(ct) |
| 1962 | #ifdef CONFIG_NF_NAT_NEEDED |
| 1963 | + 2 * nla_total_size(0) /* CTA_NAT_SEQ_ADJ_ORIG|REPL */ |
| 1964 | + 6 * nla_total_size(sizeof(u_int32_t)) /* CTA_NAT_SEQ_OFFSET */ |
| 1965 | #endif |
| 1966 | #ifdef CONFIG_NF_CONNTRACK_MARK |
| 1967 | + nla_total_size(sizeof(u_int32_t)) /* CTA_MARK */ |
| 1968 | #endif |
| 1969 | + ctnetlink_proto_size(ct) |
| 1970 | ; |
| 1971 | } |
| 1972 | |
| 1973 | static int |
| 1974 | ctnetlink_nfqueue_build(struct sk_buff *skb, struct nf_conn *ct) |
| 1975 | { |
| 1976 | struct nlattr *nest_parms; |
| 1977 | |
| 1978 | rcu_read_lock(); |
| 1979 | nest_parms = nla_nest_start(skb, CTA_TUPLE_ORIG | NLA_F_NESTED); |
| 1980 | if (!nest_parms) |
| 1981 | goto nla_put_failure; |
| 1982 | if (ctnetlink_dump_tuples(skb, nf_ct_tuple(ct, IP_CT_DIR_ORIGINAL)) < 0) |
| 1983 | goto nla_put_failure; |
| 1984 | nla_nest_end(skb, nest_parms); |
| 1985 | |
| 1986 | nest_parms = nla_nest_start(skb, CTA_TUPLE_REPLY | NLA_F_NESTED); |
| 1987 | if (!nest_parms) |
| 1988 | goto nla_put_failure; |
| 1989 | if (ctnetlink_dump_tuples(skb, nf_ct_tuple(ct, IP_CT_DIR_REPLY)) < 0) |
| 1990 | goto nla_put_failure; |
| 1991 | nla_nest_end(skb, nest_parms); |
| 1992 | |
| 1993 | if (nf_ct_zone(ct)) { |
| 1994 | if (nla_put_be16(skb, CTA_ZONE, htons(nf_ct_zone(ct)))) |
| 1995 | goto nla_put_failure; |
| 1996 | } |
| 1997 | |
| 1998 | if (ctnetlink_dump_id(skb, ct) < 0) |
| 1999 | goto nla_put_failure; |
| 2000 | |
| 2001 | if (ctnetlink_dump_status(skb, ct) < 0) |
| 2002 | goto nla_put_failure; |
| 2003 | |
| 2004 | if (ctnetlink_dump_timeout(skb, ct) < 0) |
| 2005 | goto nla_put_failure; |
| 2006 | |
| 2007 | if (ctnetlink_dump_protoinfo(skb, ct) < 0) |
| 2008 | goto nla_put_failure; |
| 2009 | |
| 2010 | if (ctnetlink_dump_helpinfo(skb, ct) < 0) |
| 2011 | goto nla_put_failure; |
| 2012 | |
| 2013 | #ifdef CONFIG_NF_CONNTRACK_SECMARK |
| 2014 | if (ct->secmark && ctnetlink_dump_secctx(skb, ct) < 0) |
| 2015 | goto nla_put_failure; |
| 2016 | #endif |
| 2017 | if (ct->master && ctnetlink_dump_master(skb, ct) < 0) |
| 2018 | goto nla_put_failure; |
| 2019 | |
| 2020 | if ((ct->status & IPS_SEQ_ADJUST) && |
| 2021 | ctnetlink_dump_nat_seq_adj(skb, ct) < 0) |
| 2022 | goto nla_put_failure; |
| 2023 | |
| 2024 | #ifdef CONFIG_NF_CONNTRACK_MARK |
| 2025 | if (ct->mark && ctnetlink_dump_mark(skb, ct) < 0) |
| 2026 | goto nla_put_failure; |
| 2027 | #endif |
Florian Westphal | 0ceabd8 | 2013-01-11 06:30:45 +0000 | [diff] [blame^] | 2028 | if (ctnetlink_dump_labels(skb, ct) < 0) |
| 2029 | goto nla_put_failure; |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2030 | rcu_read_unlock(); |
| 2031 | return 0; |
| 2032 | |
| 2033 | nla_put_failure: |
| 2034 | rcu_read_unlock(); |
| 2035 | return -ENOSPC; |
| 2036 | } |
| 2037 | |
| 2038 | static int |
| 2039 | ctnetlink_nfqueue_parse_ct(const struct nlattr *cda[], struct nf_conn *ct) |
| 2040 | { |
| 2041 | int err; |
| 2042 | |
| 2043 | if (cda[CTA_TIMEOUT]) { |
| 2044 | err = ctnetlink_change_timeout(ct, cda); |
| 2045 | if (err < 0) |
| 2046 | return err; |
| 2047 | } |
| 2048 | if (cda[CTA_STATUS]) { |
| 2049 | err = ctnetlink_change_status(ct, cda); |
| 2050 | if (err < 0) |
| 2051 | return err; |
| 2052 | } |
| 2053 | if (cda[CTA_HELP]) { |
| 2054 | err = ctnetlink_change_helper(ct, cda); |
| 2055 | if (err < 0) |
| 2056 | return err; |
| 2057 | } |
| 2058 | #if defined(CONFIG_NF_CONNTRACK_MARK) |
| 2059 | if (cda[CTA_MARK]) |
| 2060 | ct->mark = ntohl(nla_get_be32(cda[CTA_MARK])); |
| 2061 | #endif |
| 2062 | return 0; |
| 2063 | } |
| 2064 | |
| 2065 | static int |
| 2066 | ctnetlink_nfqueue_parse(const struct nlattr *attr, struct nf_conn *ct) |
| 2067 | { |
| 2068 | struct nlattr *cda[CTA_MAX+1]; |
Pablo Neira Ayuso | 68e035c | 2012-08-14 12:47:37 +0200 | [diff] [blame] | 2069 | int ret; |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2070 | |
| 2071 | nla_parse_nested(cda, CTA_MAX, attr, ct_nla_policy); |
| 2072 | |
Pablo Neira Ayuso | 68e035c | 2012-08-14 12:47:37 +0200 | [diff] [blame] | 2073 | spin_lock_bh(&nf_conntrack_lock); |
| 2074 | ret = ctnetlink_nfqueue_parse_ct((const struct nlattr **)cda, ct); |
| 2075 | spin_unlock_bh(&nf_conntrack_lock); |
| 2076 | |
| 2077 | return ret; |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2078 | } |
| 2079 | |
| 2080 | static struct nfq_ct_hook ctnetlink_nfqueue_hook = { |
| 2081 | .build_size = ctnetlink_nfqueue_build_size, |
| 2082 | .build = ctnetlink_nfqueue_build, |
| 2083 | .parse = ctnetlink_nfqueue_parse, |
| 2084 | }; |
Pablo Neira Ayuso | 7c62234 | 2012-06-19 02:10:57 +0200 | [diff] [blame] | 2085 | #endif /* CONFIG_NETFILTER_NETLINK_QUEUE_CT */ |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2086 | |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 2087 | /*********************************************************************** |
| 2088 | * EXPECT |
| 2089 | ***********************************************************************/ |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2090 | |
| 2091 | static inline int |
| 2092 | ctnetlink_exp_dump_tuple(struct sk_buff *skb, |
| 2093 | const struct nf_conntrack_tuple *tuple, |
| 2094 | enum ctattr_expect type) |
| 2095 | { |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2096 | struct nlattr *nest_parms; |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 2097 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2098 | nest_parms = nla_nest_start(skb, type | NLA_F_NESTED); |
| 2099 | if (!nest_parms) |
| 2100 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2101 | if (ctnetlink_dump_tuples(skb, tuple) < 0) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2102 | goto nla_put_failure; |
| 2103 | nla_nest_end(skb, nest_parms); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2104 | |
| 2105 | return 0; |
| 2106 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2107 | nla_put_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2108 | return -1; |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 2109 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2110 | |
| 2111 | static inline int |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 2112 | ctnetlink_exp_dump_mask(struct sk_buff *skb, |
| 2113 | const struct nf_conntrack_tuple *tuple, |
Patrick McHardy | d4156e8 | 2007-07-07 22:31:32 -0700 | [diff] [blame] | 2114 | const struct nf_conntrack_tuple_mask *mask) |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 2115 | { |
| 2116 | int ret; |
| 2117 | struct nf_conntrack_l3proto *l3proto; |
Martin Josefsson | 605dcad | 2006-11-29 02:35:06 +0100 | [diff] [blame] | 2118 | struct nf_conntrack_l4proto *l4proto; |
Patrick McHardy | d4156e8 | 2007-07-07 22:31:32 -0700 | [diff] [blame] | 2119 | struct nf_conntrack_tuple m; |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2120 | struct nlattr *nest_parms; |
Patrick McHardy | d4156e8 | 2007-07-07 22:31:32 -0700 | [diff] [blame] | 2121 | |
| 2122 | memset(&m, 0xFF, sizeof(m)); |
Patrick McHardy | d4156e8 | 2007-07-07 22:31:32 -0700 | [diff] [blame] | 2123 | memcpy(&m.src.u3, &mask->src.u3, sizeof(m.src.u3)); |
Patrick McHardy | e578756 | 2010-01-26 17:04:02 +0100 | [diff] [blame] | 2124 | m.src.u.all = mask->src.u.all; |
| 2125 | m.dst.protonum = tuple->dst.protonum; |
Patrick McHardy | d4156e8 | 2007-07-07 22:31:32 -0700 | [diff] [blame] | 2126 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2127 | nest_parms = nla_nest_start(skb, CTA_EXPECT_MASK | NLA_F_NESTED); |
| 2128 | if (!nest_parms) |
| 2129 | goto nla_put_failure; |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 2130 | |
Hans Schillstrom | 3b988ec | 2012-03-05 02:24:29 +0000 | [diff] [blame] | 2131 | rcu_read_lock(); |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 2132 | l3proto = __nf_ct_l3proto_find(tuple->src.l3num); |
Patrick McHardy | d4156e8 | 2007-07-07 22:31:32 -0700 | [diff] [blame] | 2133 | ret = ctnetlink_dump_tuples_ip(skb, &m, l3proto); |
Hans Schillstrom | 3b988ec | 2012-03-05 02:24:29 +0000 | [diff] [blame] | 2134 | if (ret >= 0) { |
| 2135 | l4proto = __nf_ct_l4proto_find(tuple->src.l3num, |
| 2136 | tuple->dst.protonum); |
Patrick McHardy | d4156e8 | 2007-07-07 22:31:32 -0700 | [diff] [blame] | 2137 | ret = ctnetlink_dump_tuples_proto(skb, &m, l4proto); |
Hans Schillstrom | 3b988ec | 2012-03-05 02:24:29 +0000 | [diff] [blame] | 2138 | } |
| 2139 | rcu_read_unlock(); |
| 2140 | |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 2141 | if (unlikely(ret < 0)) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2142 | goto nla_put_failure; |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 2143 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2144 | nla_nest_end(skb, nest_parms); |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 2145 | |
| 2146 | return 0; |
| 2147 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2148 | nla_put_failure: |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 2149 | return -1; |
| 2150 | } |
| 2151 | |
Patrick McHardy | c7232c9 | 2012-08-26 19:14:06 +0200 | [diff] [blame] | 2152 | static const union nf_inet_addr any_addr; |
| 2153 | |
Ilpo Järvinen | bb5cf80 | 2008-01-05 23:11:31 -0800 | [diff] [blame] | 2154 | static int |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2155 | ctnetlink_exp_dump_expect(struct sk_buff *skb, |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 2156 | const struct nf_conntrack_expect *exp) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2157 | { |
| 2158 | struct nf_conn *master = exp->master; |
Xi Wang | c121638 | 2011-12-30 10:40:17 -0500 | [diff] [blame] | 2159 | long timeout = ((long)exp->timeout.expires - (long)jiffies) / HZ; |
Pablo Neira Ayuso | bc01befd | 2010-09-28 21:06:34 +0200 | [diff] [blame] | 2160 | struct nf_conn_help *help; |
Pablo Neira Ayuso | 076a0ca | 2012-02-05 03:41:52 +0100 | [diff] [blame] | 2161 | #ifdef CONFIG_NF_NAT_NEEDED |
| 2162 | struct nlattr *nest_parms; |
| 2163 | struct nf_conntrack_tuple nat_tuple = {}; |
| 2164 | #endif |
Pablo Neira Ayuso | 544d5c7 | 2012-02-05 03:44:51 +0100 | [diff] [blame] | 2165 | struct nf_ct_helper_expectfn *expfn; |
| 2166 | |
Patrick McHardy | d978e5d | 2007-12-17 22:37:03 -0800 | [diff] [blame] | 2167 | if (timeout < 0) |
| 2168 | timeout = 0; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2169 | |
| 2170 | if (ctnetlink_exp_dump_tuple(skb, &exp->tuple, CTA_EXPECT_TUPLE) < 0) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2171 | goto nla_put_failure; |
Pablo Neira Ayuso | 1cde643 | 2006-03-22 13:54:15 -0800 | [diff] [blame] | 2172 | if (ctnetlink_exp_dump_mask(skb, &exp->tuple, &exp->mask) < 0) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2173 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2174 | if (ctnetlink_exp_dump_tuple(skb, |
| 2175 | &master->tuplehash[IP_CT_DIR_ORIGINAL].tuple, |
| 2176 | CTA_EXPECT_MASTER) < 0) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2177 | goto nla_put_failure; |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 2178 | |
Pablo Neira Ayuso | 076a0ca | 2012-02-05 03:41:52 +0100 | [diff] [blame] | 2179 | #ifdef CONFIG_NF_NAT_NEEDED |
Patrick McHardy | c7232c9 | 2012-08-26 19:14:06 +0200 | [diff] [blame] | 2180 | if (!nf_inet_addr_cmp(&exp->saved_addr, &any_addr) || |
| 2181 | exp->saved_proto.all) { |
Pablo Neira Ayuso | 076a0ca | 2012-02-05 03:41:52 +0100 | [diff] [blame] | 2182 | nest_parms = nla_nest_start(skb, CTA_EXPECT_NAT | NLA_F_NESTED); |
| 2183 | if (!nest_parms) |
| 2184 | goto nla_put_failure; |
| 2185 | |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 2186 | if (nla_put_be32(skb, CTA_EXPECT_NAT_DIR, htonl(exp->dir))) |
| 2187 | goto nla_put_failure; |
Pablo Neira Ayuso | 076a0ca | 2012-02-05 03:41:52 +0100 | [diff] [blame] | 2188 | |
| 2189 | nat_tuple.src.l3num = nf_ct_l3num(master); |
Patrick McHardy | c7232c9 | 2012-08-26 19:14:06 +0200 | [diff] [blame] | 2190 | nat_tuple.src.u3 = exp->saved_addr; |
Pablo Neira Ayuso | 076a0ca | 2012-02-05 03:41:52 +0100 | [diff] [blame] | 2191 | nat_tuple.dst.protonum = nf_ct_protonum(master); |
| 2192 | nat_tuple.src.u = exp->saved_proto; |
| 2193 | |
| 2194 | if (ctnetlink_exp_dump_tuple(skb, &nat_tuple, |
| 2195 | CTA_EXPECT_NAT_TUPLE) < 0) |
| 2196 | goto nla_put_failure; |
| 2197 | nla_nest_end(skb, nest_parms); |
| 2198 | } |
| 2199 | #endif |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 2200 | if (nla_put_be32(skb, CTA_EXPECT_TIMEOUT, htonl(timeout)) || |
| 2201 | nla_put_be32(skb, CTA_EXPECT_ID, htonl((unsigned long)exp)) || |
| 2202 | nla_put_be32(skb, CTA_EXPECT_FLAGS, htonl(exp->flags)) || |
| 2203 | nla_put_be32(skb, CTA_EXPECT_CLASS, htonl(exp->class))) |
| 2204 | goto nla_put_failure; |
Pablo Neira Ayuso | bc01befd | 2010-09-28 21:06:34 +0200 | [diff] [blame] | 2205 | help = nfct_help(master); |
| 2206 | if (help) { |
| 2207 | struct nf_conntrack_helper *helper; |
| 2208 | |
| 2209 | helper = rcu_dereference(help->helper); |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 2210 | if (helper && |
| 2211 | nla_put_string(skb, CTA_EXPECT_HELP_NAME, helper->name)) |
| 2212 | goto nla_put_failure; |
Pablo Neira Ayuso | bc01befd | 2010-09-28 21:06:34 +0200 | [diff] [blame] | 2213 | } |
Pablo Neira Ayuso | 544d5c7 | 2012-02-05 03:44:51 +0100 | [diff] [blame] | 2214 | expfn = nf_ct_helper_expectfn_find_by_symbol(exp->expectfn); |
David S. Miller | cc1eb43 | 2012-04-01 18:57:48 -0400 | [diff] [blame] | 2215 | if (expfn != NULL && |
| 2216 | nla_put_string(skb, CTA_EXPECT_FN, expfn->name)) |
| 2217 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2218 | |
| 2219 | return 0; |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 2220 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2221 | nla_put_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2222 | return -1; |
| 2223 | } |
| 2224 | |
| 2225 | static int |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2226 | 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] | 2227 | int event, const struct nf_conntrack_expect *exp) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2228 | { |
| 2229 | struct nlmsghdr *nlh; |
| 2230 | struct nfgenmsg *nfmsg; |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2231 | unsigned int flags = portid ? NLM_F_MULTI : 0; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2232 | |
| 2233 | event |= NFNL_SUBSYS_CTNETLINK_EXP << 8; |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2234 | nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags); |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2235 | if (nlh == NULL) |
| 2236 | goto nlmsg_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2237 | |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2238 | nfmsg = nlmsg_data(nlh); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2239 | nfmsg->nfgen_family = exp->tuple.src.l3num; |
| 2240 | nfmsg->version = NFNETLINK_V0; |
| 2241 | nfmsg->res_id = 0; |
| 2242 | |
| 2243 | if (ctnetlink_exp_dump_expect(skb, exp) < 0) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2244 | goto nla_put_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2245 | |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2246 | nlmsg_end(skb, nlh); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2247 | return skb->len; |
| 2248 | |
| 2249 | nlmsg_failure: |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2250 | nla_put_failure: |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2251 | nlmsg_cancel(skb, nlh); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2252 | return -1; |
| 2253 | } |
| 2254 | |
| 2255 | #ifdef CONFIG_NF_CONNTRACK_EVENTS |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 2256 | static int |
| 2257 | ctnetlink_expect_event(unsigned int events, struct nf_exp_event *item) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2258 | { |
Alexey Dobriyan | 9592a5c | 2010-01-13 16:04:18 +0100 | [diff] [blame] | 2259 | struct nf_conntrack_expect *exp = item->exp; |
| 2260 | struct net *net = nf_ct_exp_net(exp); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2261 | struct nlmsghdr *nlh; |
| 2262 | struct nfgenmsg *nfmsg; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2263 | struct sk_buff *skb; |
Pablo Neira Ayuso | ebbf41d | 2010-10-19 10:19:06 +0200 | [diff] [blame] | 2264 | unsigned int type, group; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2265 | int flags = 0; |
| 2266 | |
Pablo Neira Ayuso | ebbf41d | 2010-10-19 10:19:06 +0200 | [diff] [blame] | 2267 | if (events & (1 << IPEXP_DESTROY)) { |
| 2268 | type = IPCTNL_MSG_EXP_DELETE; |
| 2269 | group = NFNLGRP_CONNTRACK_EXP_DESTROY; |
| 2270 | } else if (events & (1 << IPEXP_NEW)) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2271 | type = IPCTNL_MSG_EXP_NEW; |
| 2272 | flags = NLM_F_CREATE|NLM_F_EXCL; |
Pablo Neira Ayuso | ebbf41d | 2010-10-19 10:19:06 +0200 | [diff] [blame] | 2273 | group = NFNLGRP_CONNTRACK_EXP_NEW; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2274 | } else |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 2275 | return 0; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2276 | |
Pablo Neira Ayuso | ebbf41d | 2010-10-19 10:19:06 +0200 | [diff] [blame] | 2277 | if (!item->report && !nfnetlink_has_listeners(net, group)) |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 2278 | return 0; |
Pablo Neira Ayuso | b3a27bf | 2006-08-22 00:32:05 -0700 | [diff] [blame] | 2279 | |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2280 | skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); |
| 2281 | if (skb == NULL) |
Pablo Neira Ayuso | 150ace0 | 2009-04-17 17:47:31 +0200 | [diff] [blame] | 2282 | goto errout; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2283 | |
Marcus Sundberg | b633ad5 | 2006-02-04 02:11:09 -0800 | [diff] [blame] | 2284 | type |= NFNL_SUBSYS_CTNETLINK_EXP << 8; |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2285 | nlh = nlmsg_put(skb, item->portid, 0, type, sizeof(*nfmsg), flags); |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2286 | if (nlh == NULL) |
| 2287 | goto nlmsg_failure; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2288 | |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2289 | nfmsg = nlmsg_data(nlh); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2290 | nfmsg->nfgen_family = exp->tuple.src.l3num; |
| 2291 | nfmsg->version = NFNETLINK_V0; |
| 2292 | nfmsg->res_id = 0; |
| 2293 | |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 2294 | rcu_read_lock(); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2295 | if (ctnetlink_exp_dump_expect(skb, exp) < 0) |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2296 | goto nla_put_failure; |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 2297 | rcu_read_unlock(); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2298 | |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2299 | nlmsg_end(skb, nlh); |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2300 | nfnetlink_send(skb, net, item->portid, group, item->report, GFP_ATOMIC); |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 2301 | return 0; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2302 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2303 | nla_put_failure: |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 2304 | rcu_read_unlock(); |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2305 | nlmsg_cancel(skb, nlh); |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 2306 | nlmsg_failure: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2307 | kfree_skb(skb); |
Pablo Neira Ayuso | 150ace0 | 2009-04-17 17:47:31 +0200 | [diff] [blame] | 2308 | errout: |
Alexey Dobriyan | 9592a5c | 2010-01-13 16:04:18 +0100 | [diff] [blame] | 2309 | nfnetlink_set_err(net, 0, 0, -ENOBUFS); |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 2310 | return 0; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2311 | } |
| 2312 | #endif |
Patrick McHardy | cf6994c | 2007-07-07 22:32:34 -0700 | [diff] [blame] | 2313 | static int ctnetlink_exp_done(struct netlink_callback *cb) |
| 2314 | { |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2315 | if (cb->args[1]) |
| 2316 | nf_ct_expect_put((struct nf_conntrack_expect *)cb->args[1]); |
Patrick McHardy | cf6994c | 2007-07-07 22:32:34 -0700 | [diff] [blame] | 2317 | return 0; |
| 2318 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2319 | |
| 2320 | static int |
| 2321 | ctnetlink_exp_dump_table(struct sk_buff *skb, struct netlink_callback *cb) |
| 2322 | { |
Alexey Dobriyan | 9592a5c | 2010-01-13 16:04:18 +0100 | [diff] [blame] | 2323 | struct net *net = sock_net(skb->sk); |
Patrick McHardy | cf6994c | 2007-07-07 22:32:34 -0700 | [diff] [blame] | 2324 | struct nf_conntrack_expect *exp, *last; |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2325 | struct nfgenmsg *nfmsg = nlmsg_data(cb->nlh); |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2326 | struct hlist_node *n; |
Pablo Neira Ayuso | 87711cb | 2006-01-05 12:19:23 -0800 | [diff] [blame] | 2327 | u_int8_t l3proto = nfmsg->nfgen_family; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2328 | |
Patrick McHardy | 7d0742d | 2008-01-31 04:38:19 -0800 | [diff] [blame] | 2329 | rcu_read_lock(); |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2330 | last = (struct nf_conntrack_expect *)cb->args[1]; |
| 2331 | for (; cb->args[0] < nf_ct_expect_hsize; cb->args[0]++) { |
Patrick McHardy | cf6994c | 2007-07-07 22:32:34 -0700 | [diff] [blame] | 2332 | restart: |
Alexey Dobriyan | 9b03f38 | 2008-10-08 11:35:03 +0200 | [diff] [blame] | 2333 | hlist_for_each_entry(exp, n, &net->ct.expect_hash[cb->args[0]], |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2334 | hnode) { |
| 2335 | if (l3proto && exp->tuple.src.l3num != l3proto) |
Patrick McHardy | cf6994c | 2007-07-07 22:32:34 -0700 | [diff] [blame] | 2336 | continue; |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2337 | if (cb->args[1]) { |
| 2338 | if (exp != last) |
| 2339 | continue; |
| 2340 | cb->args[1] = 0; |
| 2341 | } |
Pablo Neira Ayuso | 8b0a231 | 2009-06-02 20:03:34 +0200 | [diff] [blame] | 2342 | if (ctnetlink_exp_fill_info(skb, |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2343 | NETLINK_CB(cb->skb).portid, |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2344 | cb->nlh->nlmsg_seq, |
| 2345 | IPCTNL_MSG_EXP_NEW, |
Pablo Neira Ayuso | 8b0a231 | 2009-06-02 20:03:34 +0200 | [diff] [blame] | 2346 | exp) < 0) { |
Patrick McHardy | 7d0742d | 2008-01-31 04:38:19 -0800 | [diff] [blame] | 2347 | if (!atomic_inc_not_zero(&exp->use)) |
| 2348 | continue; |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2349 | cb->args[1] = (unsigned long)exp; |
| 2350 | goto out; |
| 2351 | } |
Patrick McHardy | cf6994c | 2007-07-07 22:32:34 -0700 | [diff] [blame] | 2352 | } |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2353 | if (cb->args[1]) { |
| 2354 | cb->args[1] = 0; |
| 2355 | goto restart; |
Patrick McHardy | cf6994c | 2007-07-07 22:32:34 -0700 | [diff] [blame] | 2356 | } |
| 2357 | } |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 2358 | out: |
Patrick McHardy | 7d0742d | 2008-01-31 04:38:19 -0800 | [diff] [blame] | 2359 | rcu_read_unlock(); |
Patrick McHardy | cf6994c | 2007-07-07 22:32:34 -0700 | [diff] [blame] | 2360 | if (last) |
| 2361 | nf_ct_expect_put(last); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2362 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2363 | return skb->len; |
| 2364 | } |
| 2365 | |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 2366 | static const struct nla_policy exp_nla_policy[CTA_EXPECT_MAX+1] = { |
Patrick McHardy | d0b0268 | 2010-02-10 15:38:33 +0100 | [diff] [blame] | 2367 | [CTA_EXPECT_MASTER] = { .type = NLA_NESTED }, |
| 2368 | [CTA_EXPECT_TUPLE] = { .type = NLA_NESTED }, |
| 2369 | [CTA_EXPECT_MASK] = { .type = NLA_NESTED }, |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 2370 | [CTA_EXPECT_TIMEOUT] = { .type = NLA_U32 }, |
| 2371 | [CTA_EXPECT_ID] = { .type = NLA_U32 }, |
Florian Westphal | 6d1fafc | 2012-11-22 01:32:46 +0000 | [diff] [blame] | 2372 | [CTA_EXPECT_HELP_NAME] = { .type = NLA_NUL_STRING, |
| 2373 | .len = NF_CT_HELPER_NAME_LEN - 1 }, |
Pablo Neira Ayuso | bcac0df | 2010-09-22 08:35:36 +0200 | [diff] [blame] | 2374 | [CTA_EXPECT_ZONE] = { .type = NLA_U16 }, |
Pablo Neira Ayuso | 8b008fa | 2010-09-22 08:36:59 +0200 | [diff] [blame] | 2375 | [CTA_EXPECT_FLAGS] = { .type = NLA_U32 }, |
Pablo Neira Ayuso | b8c5e52 | 2012-02-05 03:21:12 +0100 | [diff] [blame] | 2376 | [CTA_EXPECT_CLASS] = { .type = NLA_U32 }, |
Pablo Neira Ayuso | 076a0ca | 2012-02-05 03:41:52 +0100 | [diff] [blame] | 2377 | [CTA_EXPECT_NAT] = { .type = NLA_NESTED }, |
Pablo Neira Ayuso | 544d5c7 | 2012-02-05 03:44:51 +0100 | [diff] [blame] | 2378 | [CTA_EXPECT_FN] = { .type = NLA_NUL_STRING }, |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2379 | }; |
| 2380 | |
| 2381 | static int |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 2382 | ctnetlink_get_expect(struct sock *ctnl, struct sk_buff *skb, |
Patrick McHardy | 3993832 | 2009-08-25 16:07:58 +0200 | [diff] [blame] | 2383 | const struct nlmsghdr *nlh, |
| 2384 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2385 | { |
Alexey Dobriyan | 9592a5c | 2010-01-13 16:04:18 +0100 | [diff] [blame] | 2386 | struct net *net = sock_net(ctnl); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2387 | struct nf_conntrack_tuple tuple; |
| 2388 | struct nf_conntrack_expect *exp; |
| 2389 | struct sk_buff *skb2; |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2390 | struct nfgenmsg *nfmsg = nlmsg_data(nlh); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2391 | u_int8_t u3 = nfmsg->nfgen_family; |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 2392 | u16 zone; |
| 2393 | int err; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2394 | |
David S. Miller | b8f3ab4 | 2011-01-18 12:40:38 -0800 | [diff] [blame] | 2395 | if (nlh->nlmsg_flags & NLM_F_DUMP) { |
Pablo Neira Ayuso | 80d326f | 2012-02-24 14:30:15 +0000 | [diff] [blame] | 2396 | struct netlink_dump_control c = { |
| 2397 | .dump = ctnetlink_exp_dump_table, |
| 2398 | .done = ctnetlink_exp_done, |
| 2399 | }; |
| 2400 | return netlink_dump_start(ctnl, skb, nlh, &c); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2401 | } |
| 2402 | |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 2403 | err = ctnetlink_parse_zone(cda[CTA_EXPECT_ZONE], &zone); |
| 2404 | if (err < 0) |
| 2405 | return err; |
| 2406 | |
Pablo Neira Ayuso | 35dba1d | 2011-12-14 12:45:22 +0100 | [diff] [blame] | 2407 | if (cda[CTA_EXPECT_TUPLE]) |
| 2408 | err = ctnetlink_parse_tuple(cda, &tuple, CTA_EXPECT_TUPLE, u3); |
| 2409 | else if (cda[CTA_EXPECT_MASTER]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2410 | err = ctnetlink_parse_tuple(cda, &tuple, CTA_EXPECT_MASTER, u3); |
| 2411 | else |
| 2412 | return -EINVAL; |
| 2413 | |
| 2414 | if (err < 0) |
| 2415 | return err; |
| 2416 | |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 2417 | exp = nf_ct_expect_find_get(net, zone, &tuple); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2418 | if (!exp) |
| 2419 | return -ENOENT; |
| 2420 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2421 | if (cda[CTA_EXPECT_ID]) { |
Patrick McHardy | 77236b6 | 2007-12-17 22:29:45 -0800 | [diff] [blame] | 2422 | __be32 id = nla_get_be32(cda[CTA_EXPECT_ID]); |
Patrick McHardy | 3583240 | 2007-09-28 14:41:50 -0700 | [diff] [blame] | 2423 | if (ntohl(id) != (u32)(unsigned long)exp) { |
Patrick McHardy | 6823645 | 2007-07-07 22:30:49 -0700 | [diff] [blame] | 2424 | nf_ct_expect_put(exp); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2425 | return -ENOENT; |
| 2426 | } |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 2427 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2428 | |
| 2429 | err = -ENOMEM; |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2430 | skb2 = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
Pablo Neira Ayuso | 81378f7 | 2011-12-24 19:03:46 +0100 | [diff] [blame] | 2431 | if (skb2 == NULL) { |
| 2432 | nf_ct_expect_put(exp); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2433 | goto out; |
Pablo Neira Ayuso | 81378f7 | 2011-12-24 19:03:46 +0100 | [diff] [blame] | 2434 | } |
Thomas Graf | 4e9b826 | 2006-11-27 09:25:58 -0800 | [diff] [blame] | 2435 | |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 2436 | rcu_read_lock(); |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2437 | err = ctnetlink_exp_fill_info(skb2, NETLINK_CB(skb).portid, |
Pablo Neira Ayuso | 8b0a231 | 2009-06-02 20:03:34 +0200 | [diff] [blame] | 2438 | nlh->nlmsg_seq, IPCTNL_MSG_EXP_NEW, exp); |
Pablo Neira Ayuso | 528a3a6 | 2008-11-17 16:00:40 +0100 | [diff] [blame] | 2439 | rcu_read_unlock(); |
Pablo Neira Ayuso | 81378f7 | 2011-12-24 19:03:46 +0100 | [diff] [blame] | 2440 | nf_ct_expect_put(exp); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2441 | if (err <= 0) |
| 2442 | goto free; |
| 2443 | |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2444 | err = netlink_unicast(ctnl, skb2, NETLINK_CB(skb).portid, MSG_DONTWAIT); |
Pablo Neira Ayuso | 81378f7 | 2011-12-24 19:03:46 +0100 | [diff] [blame] | 2445 | if (err < 0) |
| 2446 | goto out; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2447 | |
Pablo Neira Ayuso | 81378f7 | 2011-12-24 19:03:46 +0100 | [diff] [blame] | 2448 | return 0; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2449 | |
| 2450 | free: |
| 2451 | kfree_skb(skb2); |
| 2452 | out: |
Pablo Neira Ayuso | 81378f7 | 2011-12-24 19:03:46 +0100 | [diff] [blame] | 2453 | /* this avoids a loop in nfnetlink. */ |
| 2454 | return err == -EAGAIN ? -ENOBUFS : err; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2455 | } |
| 2456 | |
| 2457 | static int |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 2458 | ctnetlink_del_expect(struct sock *ctnl, struct sk_buff *skb, |
Patrick McHardy | 3993832 | 2009-08-25 16:07:58 +0200 | [diff] [blame] | 2459 | const struct nlmsghdr *nlh, |
| 2460 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2461 | { |
Alexey Dobriyan | 9592a5c | 2010-01-13 16:04:18 +0100 | [diff] [blame] | 2462 | struct net *net = sock_net(ctnl); |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2463 | struct nf_conntrack_expect *exp; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2464 | struct nf_conntrack_tuple tuple; |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2465 | struct nfgenmsg *nfmsg = nlmsg_data(nlh); |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2466 | struct hlist_node *n, *next; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2467 | u_int8_t u3 = nfmsg->nfgen_family; |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2468 | unsigned int i; |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 2469 | u16 zone; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2470 | int err; |
| 2471 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2472 | if (cda[CTA_EXPECT_TUPLE]) { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2473 | /* delete a single expect by tuple */ |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 2474 | err = ctnetlink_parse_zone(cda[CTA_EXPECT_ZONE], &zone); |
| 2475 | if (err < 0) |
| 2476 | return err; |
| 2477 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2478 | err = ctnetlink_parse_tuple(cda, &tuple, CTA_EXPECT_TUPLE, u3); |
| 2479 | if (err < 0) |
| 2480 | return err; |
| 2481 | |
| 2482 | /* bump usage count to 2 */ |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 2483 | exp = nf_ct_expect_find_get(net, zone, &tuple); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2484 | if (!exp) |
| 2485 | return -ENOENT; |
| 2486 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2487 | if (cda[CTA_EXPECT_ID]) { |
Patrick McHardy | 77236b6 | 2007-12-17 22:29:45 -0800 | [diff] [blame] | 2488 | __be32 id = nla_get_be32(cda[CTA_EXPECT_ID]); |
Patrick McHardy | 3583240 | 2007-09-28 14:41:50 -0700 | [diff] [blame] | 2489 | if (ntohl(id) != (u32)(unsigned long)exp) { |
Patrick McHardy | 6823645 | 2007-07-07 22:30:49 -0700 | [diff] [blame] | 2490 | nf_ct_expect_put(exp); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2491 | return -ENOENT; |
| 2492 | } |
| 2493 | } |
| 2494 | |
| 2495 | /* after list removal, usage count == 1 */ |
Pablo Neira Ayuso | ebbf41d | 2010-10-19 10:19:06 +0200 | [diff] [blame] | 2496 | spin_lock_bh(&nf_conntrack_lock); |
| 2497 | if (del_timer(&exp->timeout)) { |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2498 | nf_ct_unlink_expect_report(exp, NETLINK_CB(skb).portid, |
Pablo Neira Ayuso | ebbf41d | 2010-10-19 10:19:06 +0200 | [diff] [blame] | 2499 | nlmsg_report(nlh)); |
| 2500 | nf_ct_expect_put(exp); |
| 2501 | } |
| 2502 | spin_unlock_bh(&nf_conntrack_lock); |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 2503 | /* have to put what we 'get' above. |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2504 | * after this line usage count == 0 */ |
Patrick McHardy | 6823645 | 2007-07-07 22:30:49 -0700 | [diff] [blame] | 2505 | nf_ct_expect_put(exp); |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2506 | } else if (cda[CTA_EXPECT_HELP_NAME]) { |
| 2507 | char *name = nla_data(cda[CTA_EXPECT_HELP_NAME]); |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2508 | struct nf_conn_help *m_help; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2509 | |
| 2510 | /* delete all expectations for this helper */ |
Patrick McHardy | f8ba1af | 2008-01-31 04:38:58 -0800 | [diff] [blame] | 2511 | spin_lock_bh(&nf_conntrack_lock); |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2512 | for (i = 0; i < nf_ct_expect_hsize; i++) { |
| 2513 | hlist_for_each_entry_safe(exp, n, next, |
Alexey Dobriyan | 9592a5c | 2010-01-13 16:04:18 +0100 | [diff] [blame] | 2514 | &net->ct.expect_hash[i], |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2515 | hnode) { |
| 2516 | m_help = nfct_help(exp->master); |
Patrick McHardy | 794e687 | 2010-02-03 13:41:29 +0100 | [diff] [blame] | 2517 | if (!strcmp(m_help->helper->name, name) && |
| 2518 | del_timer(&exp->timeout)) { |
Pablo Neira Ayuso | ebbf41d | 2010-10-19 10:19:06 +0200 | [diff] [blame] | 2519 | nf_ct_unlink_expect_report(exp, |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2520 | NETLINK_CB(skb).portid, |
Pablo Neira Ayuso | ebbf41d | 2010-10-19 10:19:06 +0200 | [diff] [blame] | 2521 | nlmsg_report(nlh)); |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2522 | nf_ct_expect_put(exp); |
| 2523 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2524 | } |
| 2525 | } |
Patrick McHardy | f8ba1af | 2008-01-31 04:38:58 -0800 | [diff] [blame] | 2526 | spin_unlock_bh(&nf_conntrack_lock); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2527 | } else { |
| 2528 | /* This basically means we have to flush everything*/ |
Patrick McHardy | f8ba1af | 2008-01-31 04:38:58 -0800 | [diff] [blame] | 2529 | spin_lock_bh(&nf_conntrack_lock); |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2530 | for (i = 0; i < nf_ct_expect_hsize; i++) { |
| 2531 | hlist_for_each_entry_safe(exp, n, next, |
Alexey Dobriyan | 9592a5c | 2010-01-13 16:04:18 +0100 | [diff] [blame] | 2532 | &net->ct.expect_hash[i], |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2533 | hnode) { |
| 2534 | if (del_timer(&exp->timeout)) { |
Pablo Neira Ayuso | ebbf41d | 2010-10-19 10:19:06 +0200 | [diff] [blame] | 2535 | nf_ct_unlink_expect_report(exp, |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2536 | NETLINK_CB(skb).portid, |
Pablo Neira Ayuso | ebbf41d | 2010-10-19 10:19:06 +0200 | [diff] [blame] | 2537 | nlmsg_report(nlh)); |
Patrick McHardy | 31f1587 | 2007-07-07 22:35:21 -0700 | [diff] [blame] | 2538 | nf_ct_expect_put(exp); |
| 2539 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2540 | } |
| 2541 | } |
Patrick McHardy | f8ba1af | 2008-01-31 04:38:58 -0800 | [diff] [blame] | 2542 | spin_unlock_bh(&nf_conntrack_lock); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2543 | } |
| 2544 | |
| 2545 | return 0; |
| 2546 | } |
| 2547 | static int |
Patrick McHardy | 3993832 | 2009-08-25 16:07:58 +0200 | [diff] [blame] | 2548 | ctnetlink_change_expect(struct nf_conntrack_expect *x, |
| 2549 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2550 | { |
Kelvie Wong | 9768e1a | 2012-05-02 14:39:24 +0000 | [diff] [blame] | 2551 | if (cda[CTA_EXPECT_TIMEOUT]) { |
| 2552 | if (!del_timer(&x->timeout)) |
| 2553 | return -ETIME; |
| 2554 | |
| 2555 | x->timeout.expires = jiffies + |
| 2556 | ntohl(nla_get_be32(cda[CTA_EXPECT_TIMEOUT])) * HZ; |
| 2557 | add_timer(&x->timeout); |
| 2558 | } |
| 2559 | return 0; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2560 | } |
| 2561 | |
Pablo Neira Ayuso | 076a0ca | 2012-02-05 03:41:52 +0100 | [diff] [blame] | 2562 | static const struct nla_policy exp_nat_nla_policy[CTA_EXPECT_NAT_MAX+1] = { |
| 2563 | [CTA_EXPECT_NAT_DIR] = { .type = NLA_U32 }, |
| 2564 | [CTA_EXPECT_NAT_TUPLE] = { .type = NLA_NESTED }, |
| 2565 | }; |
| 2566 | |
| 2567 | static int |
| 2568 | ctnetlink_parse_expect_nat(const struct nlattr *attr, |
| 2569 | struct nf_conntrack_expect *exp, |
| 2570 | u_int8_t u3) |
| 2571 | { |
| 2572 | #ifdef CONFIG_NF_NAT_NEEDED |
| 2573 | struct nlattr *tb[CTA_EXPECT_NAT_MAX+1]; |
| 2574 | struct nf_conntrack_tuple nat_tuple = {}; |
| 2575 | int err; |
| 2576 | |
| 2577 | nla_parse_nested(tb, CTA_EXPECT_NAT_MAX, attr, exp_nat_nla_policy); |
| 2578 | |
| 2579 | if (!tb[CTA_EXPECT_NAT_DIR] || !tb[CTA_EXPECT_NAT_TUPLE]) |
| 2580 | return -EINVAL; |
| 2581 | |
| 2582 | err = ctnetlink_parse_tuple((const struct nlattr * const *)tb, |
| 2583 | &nat_tuple, CTA_EXPECT_NAT_TUPLE, u3); |
| 2584 | if (err < 0) |
| 2585 | return err; |
| 2586 | |
Patrick McHardy | c7232c9 | 2012-08-26 19:14:06 +0200 | [diff] [blame] | 2587 | exp->saved_addr = nat_tuple.src.u3; |
Pablo Neira Ayuso | 076a0ca | 2012-02-05 03:41:52 +0100 | [diff] [blame] | 2588 | exp->saved_proto = nat_tuple.src.u; |
| 2589 | exp->dir = ntohl(nla_get_be32(tb[CTA_EXPECT_NAT_DIR])); |
| 2590 | |
| 2591 | return 0; |
| 2592 | #else |
| 2593 | return -EOPNOTSUPP; |
| 2594 | #endif |
| 2595 | } |
| 2596 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2597 | static int |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 2598 | ctnetlink_create_expect(struct net *net, u16 zone, |
| 2599 | const struct nlattr * const cda[], |
Alexey Dobriyan | 9592a5c | 2010-01-13 16:04:18 +0100 | [diff] [blame] | 2600 | u_int8_t u3, |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2601 | u32 portid, int report) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2602 | { |
| 2603 | struct nf_conntrack_tuple tuple, mask, master_tuple; |
| 2604 | struct nf_conntrack_tuple_hash *h = NULL; |
| 2605 | struct nf_conntrack_expect *exp; |
| 2606 | struct nf_conn *ct; |
Harald Welte | dc808fe | 2006-03-20 17:56:32 -0800 | [diff] [blame] | 2607 | struct nf_conn_help *help; |
Pablo Neira Ayuso | 660fdb2 | 2012-02-05 02:34:16 +0100 | [diff] [blame] | 2608 | struct nf_conntrack_helper *helper = NULL; |
Pablo Neira Ayuso | b8c5e52 | 2012-02-05 03:21:12 +0100 | [diff] [blame] | 2609 | u_int32_t class = 0; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2610 | int err = 0; |
| 2611 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2612 | /* caller guarantees that those three CTA_EXPECT_* exist */ |
| 2613 | err = ctnetlink_parse_tuple(cda, &tuple, CTA_EXPECT_TUPLE, u3); |
| 2614 | if (err < 0) |
| 2615 | return err; |
| 2616 | err = ctnetlink_parse_tuple(cda, &mask, CTA_EXPECT_MASK, u3); |
| 2617 | if (err < 0) |
| 2618 | return err; |
| 2619 | err = ctnetlink_parse_tuple(cda, &master_tuple, CTA_EXPECT_MASTER, u3); |
| 2620 | if (err < 0) |
| 2621 | return err; |
| 2622 | |
| 2623 | /* Look for master conntrack of this expectation */ |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 2624 | h = nf_conntrack_find_get(net, zone, &master_tuple); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2625 | if (!h) |
| 2626 | return -ENOENT; |
| 2627 | ct = nf_ct_tuplehash_to_ctrack(h); |
Pablo Neira Ayuso | 660fdb2 | 2012-02-05 02:34:16 +0100 | [diff] [blame] | 2628 | |
| 2629 | /* Look for helper of this expectation */ |
| 2630 | if (cda[CTA_EXPECT_HELP_NAME]) { |
| 2631 | const char *helpname = nla_data(cda[CTA_EXPECT_HELP_NAME]); |
| 2632 | |
| 2633 | helper = __nf_conntrack_helper_find(helpname, nf_ct_l3num(ct), |
| 2634 | nf_ct_protonum(ct)); |
| 2635 | if (helper == NULL) { |
| 2636 | #ifdef CONFIG_MODULES |
| 2637 | if (request_module("nfct-helper-%s", helpname) < 0) { |
| 2638 | err = -EOPNOTSUPP; |
| 2639 | goto out; |
| 2640 | } |
| 2641 | |
| 2642 | helper = __nf_conntrack_helper_find(helpname, |
| 2643 | nf_ct_l3num(ct), |
| 2644 | nf_ct_protonum(ct)); |
| 2645 | if (helper) { |
| 2646 | err = -EAGAIN; |
| 2647 | goto out; |
| 2648 | } |
| 2649 | #endif |
| 2650 | err = -EOPNOTSUPP; |
| 2651 | goto out; |
| 2652 | } |
| 2653 | } |
| 2654 | |
Pablo Neira Ayuso | b8c5e52 | 2012-02-05 03:21:12 +0100 | [diff] [blame] | 2655 | if (cda[CTA_EXPECT_CLASS] && helper) { |
| 2656 | class = ntohl(nla_get_be32(cda[CTA_EXPECT_CLASS])); |
| 2657 | if (class > helper->expect_class_max) { |
| 2658 | err = -EINVAL; |
| 2659 | goto out; |
| 2660 | } |
| 2661 | } |
Patrick McHardy | 6823645 | 2007-07-07 22:30:49 -0700 | [diff] [blame] | 2662 | exp = nf_ct_expect_alloc(ct); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2663 | if (!exp) { |
| 2664 | err = -ENOMEM; |
| 2665 | goto out; |
| 2666 | } |
Pablo Neira Ayuso | bc01befd | 2010-09-28 21:06:34 +0200 | [diff] [blame] | 2667 | help = nfct_help(ct); |
| 2668 | if (!help) { |
| 2669 | if (!cda[CTA_EXPECT_TIMEOUT]) { |
| 2670 | err = -EINVAL; |
Jesper Juhl | 1310b955 | 2012-12-26 11:49:40 +0000 | [diff] [blame] | 2671 | goto err_out; |
Pablo Neira Ayuso | bc01befd | 2010-09-28 21:06:34 +0200 | [diff] [blame] | 2672 | } |
| 2673 | exp->timeout.expires = |
| 2674 | jiffies + ntohl(nla_get_be32(cda[CTA_EXPECT_TIMEOUT])) * HZ; |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 2675 | |
Pablo Neira Ayuso | bc01befd | 2010-09-28 21:06:34 +0200 | [diff] [blame] | 2676 | exp->flags = NF_CT_EXPECT_USERSPACE; |
| 2677 | if (cda[CTA_EXPECT_FLAGS]) { |
| 2678 | exp->flags |= |
| 2679 | ntohl(nla_get_be32(cda[CTA_EXPECT_FLAGS])); |
| 2680 | } |
| 2681 | } else { |
| 2682 | if (cda[CTA_EXPECT_FLAGS]) { |
| 2683 | exp->flags = ntohl(nla_get_be32(cda[CTA_EXPECT_FLAGS])); |
| 2684 | exp->flags &= ~NF_CT_EXPECT_USERSPACE; |
| 2685 | } else |
| 2686 | exp->flags = 0; |
| 2687 | } |
Pablo Neira Ayuso | 544d5c7 | 2012-02-05 03:44:51 +0100 | [diff] [blame] | 2688 | if (cda[CTA_EXPECT_FN]) { |
| 2689 | const char *name = nla_data(cda[CTA_EXPECT_FN]); |
| 2690 | struct nf_ct_helper_expectfn *expfn; |
| 2691 | |
| 2692 | expfn = nf_ct_helper_expectfn_find_by_name(name); |
| 2693 | if (expfn == NULL) { |
| 2694 | err = -EINVAL; |
| 2695 | goto err_out; |
| 2696 | } |
| 2697 | exp->expectfn = expfn->expectfn; |
| 2698 | } else |
| 2699 | exp->expectfn = NULL; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2700 | |
Pablo Neira Ayuso | b8c5e52 | 2012-02-05 03:21:12 +0100 | [diff] [blame] | 2701 | exp->class = class; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2702 | exp->master = ct; |
Pablo Neira Ayuso | 660fdb2 | 2012-02-05 02:34:16 +0100 | [diff] [blame] | 2703 | exp->helper = helper; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2704 | memcpy(&exp->tuple, &tuple, sizeof(struct nf_conntrack_tuple)); |
Patrick McHardy | d4156e8 | 2007-07-07 22:31:32 -0700 | [diff] [blame] | 2705 | memcpy(&exp->mask.src.u3, &mask.src.u3, sizeof(exp->mask.src.u3)); |
| 2706 | exp->mask.src.u.all = mask.src.u.all; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2707 | |
Pablo Neira Ayuso | 076a0ca | 2012-02-05 03:41:52 +0100 | [diff] [blame] | 2708 | if (cda[CTA_EXPECT_NAT]) { |
| 2709 | err = ctnetlink_parse_expect_nat(cda[CTA_EXPECT_NAT], |
| 2710 | exp, u3); |
| 2711 | if (err < 0) |
| 2712 | goto err_out; |
| 2713 | } |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2714 | err = nf_ct_expect_related_report(exp, portid, report); |
Pablo Neira Ayuso | 076a0ca | 2012-02-05 03:41:52 +0100 | [diff] [blame] | 2715 | err_out: |
Patrick McHardy | 6823645 | 2007-07-07 22:30:49 -0700 | [diff] [blame] | 2716 | nf_ct_expect_put(exp); |
YOSHIFUJI Hideaki | 601e68e | 2007-02-12 11:15:49 -0800 | [diff] [blame] | 2717 | out: |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2718 | nf_ct_put(nf_ct_tuplehash_to_ctrack(h)); |
| 2719 | return err; |
| 2720 | } |
| 2721 | |
| 2722 | static int |
| 2723 | ctnetlink_new_expect(struct sock *ctnl, struct sk_buff *skb, |
Patrick McHardy | 3993832 | 2009-08-25 16:07:58 +0200 | [diff] [blame] | 2724 | const struct nlmsghdr *nlh, |
| 2725 | const struct nlattr * const cda[]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2726 | { |
Alexey Dobriyan | 9592a5c | 2010-01-13 16:04:18 +0100 | [diff] [blame] | 2727 | struct net *net = sock_net(ctnl); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2728 | struct nf_conntrack_tuple tuple; |
| 2729 | struct nf_conntrack_expect *exp; |
Pablo Neira Ayuso | 96bcf93 | 2009-06-02 20:07:39 +0200 | [diff] [blame] | 2730 | struct nfgenmsg *nfmsg = nlmsg_data(nlh); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2731 | u_int8_t u3 = nfmsg->nfgen_family; |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 2732 | u16 zone; |
| 2733 | int err; |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2734 | |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 2735 | if (!cda[CTA_EXPECT_TUPLE] |
| 2736 | || !cda[CTA_EXPECT_MASK] |
| 2737 | || !cda[CTA_EXPECT_MASTER]) |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2738 | return -EINVAL; |
| 2739 | |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 2740 | err = ctnetlink_parse_zone(cda[CTA_EXPECT_ZONE], &zone); |
| 2741 | if (err < 0) |
| 2742 | return err; |
| 2743 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2744 | err = ctnetlink_parse_tuple(cda, &tuple, CTA_EXPECT_TUPLE, u3); |
| 2745 | if (err < 0) |
| 2746 | return err; |
| 2747 | |
Patrick McHardy | f8ba1af | 2008-01-31 04:38:58 -0800 | [diff] [blame] | 2748 | spin_lock_bh(&nf_conntrack_lock); |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 2749 | exp = __nf_ct_expect_find(net, zone, &tuple); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2750 | |
| 2751 | if (!exp) { |
Patrick McHardy | f8ba1af | 2008-01-31 04:38:58 -0800 | [diff] [blame] | 2752 | spin_unlock_bh(&nf_conntrack_lock); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2753 | err = -ENOENT; |
Pablo Neira Ayuso | 19abb7b | 2008-11-18 11:56:20 +0100 | [diff] [blame] | 2754 | if (nlh->nlmsg_flags & NLM_F_CREATE) { |
Patrick McHardy | ef00f89 | 2010-02-15 18:14:57 +0100 | [diff] [blame] | 2755 | err = ctnetlink_create_expect(net, zone, cda, |
Pablo Neira Ayuso | 19abb7b | 2008-11-18 11:56:20 +0100 | [diff] [blame] | 2756 | u3, |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2757 | NETLINK_CB(skb).portid, |
Pablo Neira Ayuso | 19abb7b | 2008-11-18 11:56:20 +0100 | [diff] [blame] | 2758 | nlmsg_report(nlh)); |
| 2759 | } |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2760 | return err; |
| 2761 | } |
| 2762 | |
| 2763 | err = -EEXIST; |
| 2764 | if (!(nlh->nlmsg_flags & NLM_F_EXCL)) |
| 2765 | err = ctnetlink_change_expect(exp, cda); |
Patrick McHardy | f8ba1af | 2008-01-31 04:38:58 -0800 | [diff] [blame] | 2766 | spin_unlock_bh(&nf_conntrack_lock); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2767 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2768 | return err; |
| 2769 | } |
| 2770 | |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 2771 | static int |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2772 | 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] | 2773 | const struct ip_conntrack_stat *st) |
| 2774 | { |
| 2775 | struct nlmsghdr *nlh; |
| 2776 | struct nfgenmsg *nfmsg; |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2777 | unsigned int flags = portid ? NLM_F_MULTI : 0, event; |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 2778 | |
| 2779 | event = (NFNL_SUBSYS_CTNETLINK << 8 | IPCTNL_MSG_EXP_GET_STATS_CPU); |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2780 | nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags); |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 2781 | if (nlh == NULL) |
| 2782 | goto nlmsg_failure; |
| 2783 | |
| 2784 | nfmsg = nlmsg_data(nlh); |
| 2785 | nfmsg->nfgen_family = AF_UNSPEC; |
| 2786 | nfmsg->version = NFNETLINK_V0; |
| 2787 | nfmsg->res_id = htons(cpu); |
| 2788 | |
| 2789 | if (nla_put_be32(skb, CTA_STATS_EXP_NEW, htonl(st->expect_new)) || |
| 2790 | nla_put_be32(skb, CTA_STATS_EXP_CREATE, htonl(st->expect_create)) || |
| 2791 | nla_put_be32(skb, CTA_STATS_EXP_DELETE, htonl(st->expect_delete))) |
| 2792 | goto nla_put_failure; |
| 2793 | |
| 2794 | nlmsg_end(skb, nlh); |
| 2795 | return skb->len; |
| 2796 | |
| 2797 | nla_put_failure: |
| 2798 | nlmsg_failure: |
| 2799 | nlmsg_cancel(skb, nlh); |
| 2800 | return -1; |
| 2801 | } |
| 2802 | |
| 2803 | static int |
| 2804 | ctnetlink_exp_stat_cpu_dump(struct sk_buff *skb, struct netlink_callback *cb) |
| 2805 | { |
| 2806 | int cpu; |
| 2807 | struct net *net = sock_net(skb->sk); |
| 2808 | |
| 2809 | if (cb->args[0] == nr_cpu_ids) |
| 2810 | return 0; |
| 2811 | |
| 2812 | for (cpu = cb->args[0]; cpu < nr_cpu_ids; cpu++) { |
| 2813 | const struct ip_conntrack_stat *st; |
| 2814 | |
| 2815 | if (!cpu_possible(cpu)) |
| 2816 | continue; |
| 2817 | |
| 2818 | st = per_cpu_ptr(net->ct.stat, cpu); |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2819 | 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] | 2820 | cb->nlh->nlmsg_seq, |
| 2821 | cpu, st) < 0) |
| 2822 | break; |
| 2823 | } |
| 2824 | cb->args[0] = cpu; |
| 2825 | |
| 2826 | return skb->len; |
| 2827 | } |
| 2828 | |
| 2829 | static int |
| 2830 | ctnetlink_stat_exp_cpu(struct sock *ctnl, struct sk_buff *skb, |
| 2831 | const struct nlmsghdr *nlh, |
| 2832 | const struct nlattr * const cda[]) |
| 2833 | { |
| 2834 | if (nlh->nlmsg_flags & NLM_F_DUMP) { |
| 2835 | struct netlink_dump_control c = { |
| 2836 | .dump = ctnetlink_exp_stat_cpu_dump, |
| 2837 | }; |
| 2838 | return netlink_dump_start(ctnl, skb, nlh, &c); |
| 2839 | } |
| 2840 | |
| 2841 | return 0; |
| 2842 | } |
| 2843 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2844 | #ifdef CONFIG_NF_CONNTRACK_EVENTS |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 2845 | static struct nf_ct_event_notifier ctnl_notifier = { |
| 2846 | .fcn = ctnetlink_conntrack_event, |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2847 | }; |
| 2848 | |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 2849 | static struct nf_exp_event_notifier ctnl_notifier_exp = { |
| 2850 | .fcn = ctnetlink_expect_event, |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2851 | }; |
| 2852 | #endif |
| 2853 | |
Patrick McHardy | 7c8d4cb | 2007-09-28 14:15:45 -0700 | [diff] [blame] | 2854 | static const struct nfnl_callback ctnl_cb[IPCTNL_MSG_MAX] = { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2855 | [IPCTNL_MSG_CT_NEW] = { .call = ctnetlink_new_conntrack, |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 2856 | .attr_count = CTA_MAX, |
| 2857 | .policy = ct_nla_policy }, |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2858 | [IPCTNL_MSG_CT_GET] = { .call = ctnetlink_get_conntrack, |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 2859 | .attr_count = CTA_MAX, |
| 2860 | .policy = ct_nla_policy }, |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2861 | [IPCTNL_MSG_CT_DELETE] = { .call = ctnetlink_del_conntrack, |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 2862 | .attr_count = CTA_MAX, |
| 2863 | .policy = ct_nla_policy }, |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2864 | [IPCTNL_MSG_CT_GET_CTRZERO] = { .call = ctnetlink_get_conntrack, |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 2865 | .attr_count = CTA_MAX, |
| 2866 | .policy = ct_nla_policy }, |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 2867 | [IPCTNL_MSG_CT_GET_STATS_CPU] = { .call = ctnetlink_stat_ct_cpu }, |
| 2868 | [IPCTNL_MSG_CT_GET_STATS] = { .call = ctnetlink_stat_ct }, |
Pablo Neira Ayuso | d871bef | 2012-11-27 14:49:42 +0100 | [diff] [blame] | 2869 | [IPCTNL_MSG_CT_GET_DYING] = { .call = ctnetlink_get_ct_dying }, |
| 2870 | [IPCTNL_MSG_CT_GET_UNCONFIRMED] = { .call = ctnetlink_get_ct_unconfirmed }, |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2871 | }; |
| 2872 | |
Patrick McHardy | 7c8d4cb | 2007-09-28 14:15:45 -0700 | [diff] [blame] | 2873 | 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] | 2874 | [IPCTNL_MSG_EXP_GET] = { .call = ctnetlink_get_expect, |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 2875 | .attr_count = CTA_EXPECT_MAX, |
| 2876 | .policy = exp_nla_policy }, |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2877 | [IPCTNL_MSG_EXP_NEW] = { .call = ctnetlink_new_expect, |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 2878 | .attr_count = CTA_EXPECT_MAX, |
| 2879 | .policy = exp_nla_policy }, |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2880 | [IPCTNL_MSG_EXP_DELETE] = { .call = ctnetlink_del_expect, |
Patrick McHardy | f73e924 | 2007-09-28 14:39:55 -0700 | [diff] [blame] | 2881 | .attr_count = CTA_EXPECT_MAX, |
| 2882 | .policy = exp_nla_policy }, |
Pablo Neira Ayuso | 392025f | 2012-06-26 20:27:09 +0200 | [diff] [blame] | 2883 | [IPCTNL_MSG_EXP_GET_STATS_CPU] = { .call = ctnetlink_stat_exp_cpu }, |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2884 | }; |
| 2885 | |
Patrick McHardy | 7c8d4cb | 2007-09-28 14:15:45 -0700 | [diff] [blame] | 2886 | static const struct nfnetlink_subsystem ctnl_subsys = { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2887 | .name = "conntrack", |
| 2888 | .subsys_id = NFNL_SUBSYS_CTNETLINK, |
| 2889 | .cb_count = IPCTNL_MSG_MAX, |
| 2890 | .cb = ctnl_cb, |
| 2891 | }; |
| 2892 | |
Patrick McHardy | 7c8d4cb | 2007-09-28 14:15:45 -0700 | [diff] [blame] | 2893 | static const struct nfnetlink_subsystem ctnl_exp_subsys = { |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2894 | .name = "conntrack_expect", |
| 2895 | .subsys_id = NFNL_SUBSYS_CTNETLINK_EXP, |
| 2896 | .cb_count = IPCTNL_MSG_EXP_MAX, |
| 2897 | .cb = ctnl_exp_cb, |
| 2898 | }; |
| 2899 | |
Patrick McHardy | d2483dd | 2006-12-02 22:06:05 -0800 | [diff] [blame] | 2900 | MODULE_ALIAS("ip_conntrack_netlink"); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2901 | MODULE_ALIAS_NFNL_SUBSYS(NFNL_SUBSYS_CTNETLINK); |
Pablo Neira Ayuso | 34f9a2e | 2006-02-04 02:11:41 -0800 | [diff] [blame] | 2902 | MODULE_ALIAS_NFNL_SUBSYS(NFNL_SUBSYS_CTNETLINK_EXP); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2903 | |
Pablo Neira Ayuso | 70e9942 | 2011-11-22 00:16:51 +0100 | [diff] [blame] | 2904 | static int __net_init ctnetlink_net_init(struct net *net) |
| 2905 | { |
| 2906 | #ifdef CONFIG_NF_CONNTRACK_EVENTS |
| 2907 | int ret; |
| 2908 | |
| 2909 | ret = nf_conntrack_register_notifier(net, &ctnl_notifier); |
| 2910 | if (ret < 0) { |
| 2911 | pr_err("ctnetlink_init: cannot register notifier.\n"); |
| 2912 | goto err_out; |
| 2913 | } |
| 2914 | |
| 2915 | ret = nf_ct_expect_register_notifier(net, &ctnl_notifier_exp); |
| 2916 | if (ret < 0) { |
| 2917 | pr_err("ctnetlink_init: cannot expect register notifier.\n"); |
| 2918 | goto err_unreg_notifier; |
| 2919 | } |
| 2920 | #endif |
| 2921 | return 0; |
| 2922 | |
| 2923 | #ifdef CONFIG_NF_CONNTRACK_EVENTS |
| 2924 | err_unreg_notifier: |
| 2925 | nf_conntrack_unregister_notifier(net, &ctnl_notifier); |
| 2926 | err_out: |
| 2927 | return ret; |
| 2928 | #endif |
| 2929 | } |
| 2930 | |
| 2931 | static void ctnetlink_net_exit(struct net *net) |
| 2932 | { |
| 2933 | #ifdef CONFIG_NF_CONNTRACK_EVENTS |
| 2934 | nf_ct_expect_unregister_notifier(net, &ctnl_notifier_exp); |
| 2935 | nf_conntrack_unregister_notifier(net, &ctnl_notifier); |
| 2936 | #endif |
| 2937 | } |
| 2938 | |
| 2939 | static void __net_exit ctnetlink_net_exit_batch(struct list_head *net_exit_list) |
| 2940 | { |
| 2941 | struct net *net; |
| 2942 | |
| 2943 | list_for_each_entry(net, net_exit_list, exit_list) |
| 2944 | ctnetlink_net_exit(net); |
| 2945 | } |
| 2946 | |
| 2947 | static struct pernet_operations ctnetlink_net_ops = { |
| 2948 | .init = ctnetlink_net_init, |
| 2949 | .exit_batch = ctnetlink_net_exit_batch, |
| 2950 | }; |
| 2951 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2952 | static int __init ctnetlink_init(void) |
| 2953 | { |
| 2954 | int ret; |
| 2955 | |
Stephen Hemminger | 654d0fb | 2010-05-13 15:02:08 +0200 | [diff] [blame] | 2956 | pr_info("ctnetlink v%s: registering with nfnetlink.\n", version); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2957 | ret = nfnetlink_subsys_register(&ctnl_subsys); |
| 2958 | if (ret < 0) { |
Stephen Hemminger | 654d0fb | 2010-05-13 15:02:08 +0200 | [diff] [blame] | 2959 | pr_err("ctnetlink_init: cannot register with nfnetlink.\n"); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2960 | goto err_out; |
| 2961 | } |
| 2962 | |
| 2963 | ret = nfnetlink_subsys_register(&ctnl_exp_subsys); |
| 2964 | if (ret < 0) { |
Stephen Hemminger | 654d0fb | 2010-05-13 15:02:08 +0200 | [diff] [blame] | 2965 | pr_err("ctnetlink_init: cannot register exp with nfnetlink.\n"); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2966 | goto err_unreg_subsys; |
| 2967 | } |
| 2968 | |
Julia Lawall | ef6acf6 | 2012-08-29 06:49:16 +0000 | [diff] [blame] | 2969 | ret = register_pernet_subsys(&ctnetlink_net_ops); |
| 2970 | if (ret < 0) { |
Pablo Neira Ayuso | 70e9942 | 2011-11-22 00:16:51 +0100 | [diff] [blame] | 2971 | pr_err("ctnetlink_init: cannot register pernet operations\n"); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2972 | goto err_unreg_exp_subsys; |
| 2973 | } |
Pablo Neira Ayuso | 7c62234 | 2012-06-19 02:10:57 +0200 | [diff] [blame] | 2974 | #ifdef CONFIG_NETFILTER_NETLINK_QUEUE_CT |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2975 | /* setup interaction between nf_queue and nf_conntrack_netlink. */ |
| 2976 | RCU_INIT_POINTER(nfq_ct_hook, &ctnetlink_nfqueue_hook); |
| 2977 | #endif |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2978 | return 0; |
| 2979 | |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2980 | err_unreg_exp_subsys: |
| 2981 | nfnetlink_subsys_unregister(&ctnl_exp_subsys); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2982 | err_unreg_subsys: |
| 2983 | nfnetlink_subsys_unregister(&ctnl_subsys); |
| 2984 | err_out: |
| 2985 | return ret; |
| 2986 | } |
| 2987 | |
| 2988 | static void __exit ctnetlink_exit(void) |
| 2989 | { |
Stephen Hemminger | 654d0fb | 2010-05-13 15:02:08 +0200 | [diff] [blame] | 2990 | pr_info("ctnetlink: unregistering from nfnetlink.\n"); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2991 | |
Pablo Neira Ayuso | 70e9942 | 2011-11-22 00:16:51 +0100 | [diff] [blame] | 2992 | unregister_pernet_subsys(&ctnetlink_net_ops); |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2993 | nfnetlink_subsys_unregister(&ctnl_exp_subsys); |
| 2994 | nfnetlink_subsys_unregister(&ctnl_subsys); |
Pablo Neira Ayuso | 7c62234 | 2012-06-19 02:10:57 +0200 | [diff] [blame] | 2995 | #ifdef CONFIG_NETFILTER_NETLINK_QUEUE_CT |
Pablo Neira Ayuso | 9cb0176 | 2012-06-07 12:13:39 +0200 | [diff] [blame] | 2996 | RCU_INIT_POINTER(nfq_ct_hook, NULL); |
| 2997 | #endif |
Pablo Neira Ayuso | c1d10ad | 2006-01-05 12:19:05 -0800 | [diff] [blame] | 2998 | } |
| 2999 | |
| 3000 | module_init(ctnetlink_init); |
| 3001 | module_exit(ctnetlink_exit); |