Release 4.11 net/netfilter/nf_conntrack_netlink.c

/* Connection tracking via netlink socket. Allows for user space
 * protocol helpers and general trouble making from userspace.
 *
 * (C) 2001 by Jay Schulist <jschlst@samba.org>
 * (C) 2002-2006 by Harald Welte <laforge@gnumonks.org>
 * (C) 2003 by Patrick Mchardy <kaber@trash.net>
 * (C) 2005-2012 by Pablo Neira Ayuso <pablo@netfilter.org>
 *
 * Initial connection tracking via netlink development funded and
 * generally made possible by Network Robots, Inc. (www.networkrobots.com)
 *
 * Further development of this code funded by Astaro AG (http://www.astaro.com)
 *
 * This software may be used and distributed according to the terms
 * of the GNU General Public License, incorporated herein by reference.
 */

#include <linux/init.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/rculist.h>
#include <linux/rculist_nulls.h>
#include <linux/types.h>
#include <linux/timer.h>
#include <linux/security.h>
#include <linux/skbuff.h>
#include <linux/errno.h>
#include <linux/netlink.h>
#include <linux/spinlock.h>
#include <linux/interrupt.h>
#include <linux/slab.h>

#include <linux/netfilter.h>
#include <net/netlink.h>
#include <net/sock.h>
#include <net/netfilter/nf_conntrack.h>
#include <net/netfilter/nf_conntrack_core.h>
#include <net/netfilter/nf_conntrack_expect.h>
#include <net/netfilter/nf_conntrack_helper.h>
#include <net/netfilter/nf_conntrack_seqadj.h>
#include <net/netfilter/nf_conntrack_l3proto.h>
#include <net/netfilter/nf_conntrack_l4proto.h>
#include <net/netfilter/nf_conntrack_tuple.h>
#include <net/netfilter/nf_conntrack_acct.h>
#include <net/netfilter/nf_conntrack_zones.h>
#include <net/netfilter/nf_conntrack_timestamp.h>
#include <net/netfilter/nf_conntrack_labels.h>
#ifdef CONFIG_NF_NAT_NEEDED
#include <net/netfilter/nf_nat_core.h>
#include <net/netfilter/nf_nat_l4proto.h>
#include <net/netfilter/nf_nat_helper.h>
#endif

#include <linux/netfilter/nfnetlink.h>
#include <linux/netfilter/nfnetlink_conntrack.h>

MODULE_LICENSE("GPL");


static char __initdata version[] = "0.93";



static int ctnetlink_dump_tuples_proto(struct sk_buff *skb,
				       const struct nf_conntrack_tuple *tuple,
				       struct nf_conntrack_l4proto *l4proto)
{
	int ret = 0;
	struct nlattr *nest_parms;

	nest_parms = nla_nest_start(skb, CTA_TUPLE_PROTO | NLA_F_NESTED);
	if (!nest_parms)
		goto nla_put_failure;
	if (nla_put_u8(skb, CTA_PROTO_NUM, tuple->dst.protonum))
		goto nla_put_failure;

	if (likely(l4proto->tuple_to_nlattr))
		ret = l4proto->tuple_to_nlattr(skb, tuple);

	nla_nest_end(skb, nest_parms);

	return ret;

nla_put_failure:
	return -1;
}

Contributors
Person
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CommitProp
Pablo Neira Ayuso
74
70.48%
2
33.33%
Patrick McHardy
20
19.05%
2
33.33%
David S. Miller
7
6.67%
1
16.67%
Martin Josefsson
4
3.81%
1
16.67%
Total
105
100.00%
6
100.00%



static int ctnetlink_dump_tuples_ip(struct sk_buff *skb,
				    const struct nf_conntrack_tuple *tuple,
				    struct nf_conntrack_l3proto *l3proto)
{
	int ret = 0;
	struct nlattr *nest_parms;

	nest_parms = nla_nest_start(skb, CTA_TUPLE_IP | NLA_F_NESTED);
	if (!nest_parms)
		goto nla_put_failure;

	if (likely(l3proto->tuple_to_nlattr))
		ret = l3proto->tuple_to_nlattr(skb, tuple);

	nla_nest_end(skb, nest_parms);

	return ret;

nla_put_failure:
	return -1;
}

Contributors
Person
Tokens
Prop
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CommitProp
Pablo Neira Ayuso
67
77.01%
2
50.00%
Patrick McHardy
20
22.99%
2
50.00%
Total
87
100.00%
4
100.00%



static int ctnetlink_dump_tuples(struct sk_buff *skb,
				 const struct nf_conntrack_tuple *tuple)
{
	int ret;
	struct nf_conntrack_l3proto *l3proto;
	struct nf_conntrack_l4proto *l4proto;

	rcu_read_lock();
	l3proto = __nf_ct_l3proto_find(tuple->src.l3num);
	ret = ctnetlink_dump_tuples_ip(skb, tuple, l3proto);

	if (ret >= 0) {
		l4proto = __nf_ct_l4proto_find(tuple->src.l3num,
					       tuple->dst.protonum);
		ret = ctnetlink_dump_tuples_proto(skb, tuple, l4proto);
	}
	rcu_read_unlock();
	return ret;
}

Contributors
Person
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Pablo Neira Ayuso
84
86.60%
3
60.00%
Hans Schillstrom
9
9.28%
1
20.00%
Martin Josefsson
4
4.12%
1
20.00%
Total
97
100.00%
5
100.00%



static int ctnetlink_dump_zone_id(struct sk_buff *skb, int attrtype,
				  const struct nf_conntrack_zone *zone, int dir)
{
	if (zone->id == NF_CT_DEFAULT_ZONE_ID || zone->dir != dir)
		return 0;
	if (nla_put_be16(skb, attrtype, htons(zone->id)))
		goto nla_put_failure;
	return 0;

nla_put_failure:
	return -1;
}

Contributors
Person
Tokens
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CommitProp
Daniel Borkmann
66
97.06%
1
50.00%
Pablo Neira Ayuso
2
2.94%
1
50.00%
Total
68
100.00%
2
100.00%



static int ctnetlink_dump_status(struct sk_buff *skb, const struct nf_conn *ct)
{
	if (nla_put_be32(skb, CTA_STATUS, htonl(ct->status)))
		goto nla_put_failure;
	return 0;

nla_put_failure:
	return -1;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Pablo Neira Ayuso
32
71.11%
1
20.00%
David S. Miller
7
15.56%
1
20.00%
Patrick McHardy
4
8.89%
2
40.00%
Daniel Borkmann
2
4.44%
1
20.00%
Total
45
100.00%
5
100.00%



static int ctnetlink_dump_timeout(struct sk_buff *skb, const struct nf_conn *ct)
{
	long timeout = nf_ct_expires(ct) / HZ;

	if (nla_put_be32(skb, CTA_TIMEOUT, htonl(timeout)))
		goto nla_put_failure;
	return 0;

nla_put_failure:
	return -1;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Pablo Neira Ayuso
40
75.47%
1
20.00%
Patrick McHardy
5
9.43%
2
40.00%
David S. Miller
5
9.43%
1
20.00%
Florian Westphal
3
5.66%
1
20.00%
Total
53
100.00%
5
100.00%



static int ctnetlink_dump_protoinfo(struct sk_buff *skb, struct nf_conn *ct)
{
	struct nf_conntrack_l4proto *l4proto;
	struct nlattr *nest_proto;
	int ret;

	l4proto = __nf_ct_l4proto_find(nf_ct_l3num(ct), nf_ct_protonum(ct));
	if (!l4proto->to_nlattr)
		return 0;

	nest_proto = nla_nest_start(skb, CTA_PROTOINFO | NLA_F_NESTED);
	if (!nest_proto)
		goto nla_put_failure;

	ret = l4proto->to_nlattr(skb, nest_proto, ct);

	nla_nest_end(skb, nest_proto);

	return ret;

nla_put_failure:
	return -1;
}

Contributors
Person
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CommitProp
Pablo Neira Ayuso
68
66.67%
2
33.33%
Patrick McHardy
30
29.41%
3
50.00%
Martin Josefsson
4
3.92%
1
16.67%
Total
102
100.00%
6
100.00%



static int ctnetlink_dump_helpinfo(struct sk_buff *skb,
				   const struct nf_conn *ct)
{
	struct nlattr *nest_helper;
	const struct nf_conn_help *help = nfct_help(ct);
	struct nf_conntrack_helper *helper;

	if (!help)
		return 0;

	helper = rcu_dereference(help->helper);
	if (!helper)
		goto out;

	nest_helper = nla_nest_start(skb, CTA_HELP | NLA_F_NESTED);
	if (!nest_helper)
		goto nla_put_failure;
	if (nla_put_string(skb, CTA_HELP_NAME, helper->name))
		goto nla_put_failure;

	if (helper->to_nlattr)
		helper->to_nlattr(skb, ct);

	nla_nest_end(skb, nest_helper);
out:
	return 0;

nla_put_failure:
	return -1;
}

Contributors
Person
Tokens
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CommitProp
Pablo Neira Ayuso
72
54.96%
1
16.67%
Patrick McHardy
40
30.53%
3
50.00%
Harald Welte
12
9.16%
1
16.67%
David S. Miller
7
5.34%
1
16.67%
Total
131
100.00%
6
100.00%


static int

dump_counters(struct sk_buff *skb, struct nf_conn_acct *acct,
	      enum ip_conntrack_dir dir, int type)
{
	enum ctattr_type attr = dir ? CTA_COUNTERS_REPLY: CTA_COUNTERS_ORIG;
	struct nf_conn_counter *counter = acct->counter;
	struct nlattr *nest_count;
	u64 pkts, bytes;

	if (type == IPCTNL_MSG_CT_GET_CTRZERO) {
		pkts = atomic64_xchg(&counter[dir].packets, 0);
		bytes = atomic64_xchg(&counter[dir].bytes, 0);
	} else {
		pkts = atomic64_read(&counter[dir].packets);
		bytes = atomic64_read(&counter[dir].bytes);
	}

	nest_count = nla_nest_start(skb, attr | NLA_F_NESTED);
	if (!nest_count)
		goto nla_put_failure;

	if (nla_put_be64(skb, CTA_COUNTERS_PACKETS, cpu_to_be64(pkts),
			 CTA_COUNTERS_PAD) ||
	    nla_put_be64(skb, CTA_COUNTERS_BYTES, cpu_to_be64(bytes),
			 CTA_COUNTERS_PAD))
		goto nla_put_failure;

	nla_nest_end(skb, nest_count);

	return 0;

nla_put_failure:
	return -1;
}

Contributors
Person
Tokens
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CommitProp
Holger Eitzenberger
90
48.13%
1
11.11%
Pablo Neira Ayuso
56
29.95%
2
22.22%
Patrick McHardy
23
12.30%
2
22.22%
David S. Miller
9
4.81%
1
11.11%
Krzysztof Piotr Oledzki
4
2.14%
1
11.11%
Nicolas Dichtel
4
2.14%
1
11.11%
Eric Dumazet
1
0.53%
1
11.11%
Total
187
100.00%
9
100.00%


static int

ctnetlink_dump_acct(struct sk_buff *skb, const struct nf_conn *ct, int type)
{
	struct nf_conn_acct *acct = nf_conn_acct_find(ct);

	if (!acct)
		return 0;

	if (dump_counters(skb, acct, IP_CT_DIR_ORIGINAL, type) < 0)
		return -1;
	if (dump_counters(skb, acct, IP_CT_DIR_REPLY, type) < 0)
		return -1;

	return 0;
}

Contributors
Person
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CommitProp
Pablo Neira Ayuso
49
62.03%
2
50.00%
Holger Eitzenberger
30
37.97%
2
50.00%
Total
79
100.00%
4
100.00%


static int

ctnetlink_dump_timestamp(struct sk_buff *skb, const struct nf_conn *ct)
{
	struct nlattr *nest_count;
	const struct nf_conn_tstamp *tstamp;

	tstamp = nf_conn_tstamp_find(ct);
	if (!tstamp)
		return 0;

	nest_count = nla_nest_start(skb, CTA_TIMESTAMP | NLA_F_NESTED);
	if (!nest_count)
		goto nla_put_failure;

	if (nla_put_be64(skb, CTA_TIMESTAMP_START, cpu_to_be64(tstamp->start),
			 CTA_TIMESTAMP_PAD) ||
	    (tstamp->stop != 0 && nla_put_be64(skb, CTA_TIMESTAMP_STOP,
					       cpu_to_be64(tstamp->stop),
					       CTA_TIMESTAMP_PAD)))
		goto nla_put_failure;
	nla_nest_end(skb, nest_count);

	return 0;

nla_put_failure:
	return -1;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Pablo Neira Ayuso
107
86.99%
2
50.00%
David S. Miller
12
9.76%
1
25.00%
Nicolas Dichtel
4
3.25%
1
25.00%
Total
123
100.00%
4
100.00%

#ifdef CONFIG_NF_CONNTRACK_MARK


static int ctnetlink_dump_mark(struct sk_buff *skb, const struct nf_conn *ct)
{
	if (nla_put_be32(skb, CTA_MARK, htonl(ct->mark)))
		goto nla_put_failure;
	return 0;

nla_put_failure:
	return -1;
}
Contributors
Person
Tokens
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Commits
CommitProp
Pablo Neira Ayuso
33
73.33%
1
25.00%
David S. Miller
7
15.56%
1
25.00%
Patrick McHardy
5
11.11%
2
50.00%
Total
45
100.00%
4
100.00%

#else

#define ctnetlink_dump_mark(a, b) (0)
#endif

#ifdef CONFIG_NF_CONNTRACK_SECMARK


static int ctnetlink_dump_secctx(struct sk_buff *skb, const struct nf_conn *ct)
{
	struct nlattr *nest_secctx;
	int len, ret;
	char *secctx;

	ret = security_secid_to_secctx(ct->secmark, &secctx, &len);
	if (ret)
		return 0;

	ret = -1;
	nest_secctx = nla_nest_start(skb, CTA_SECCTX | NLA_F_NESTED);
	if (!nest_secctx)
		goto nla_put_failure;

	if (nla_put_string(skb, CTA_SECCTX_NAME, secctx))
		goto nla_put_failure;
	nla_nest_end(skb, nest_secctx);

	ret = 0;
nla_put_failure:
	security_release_secctx(secctx, len);
	return ret;
}
Contributors
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CommitProp
Eric Paris
78
68.42%
1
20.00%
Pablo Neira Ayuso
26
22.81%
2
40.00%
David S. Miller
7
6.14%
1
20.00%
Patrick McHardy
3
2.63%
1
20.00%
Total
114
100.00%
5
100.00%

#else

#define ctnetlink_dump_secctx(a, b) (0)
#endif

#ifdef CONFIG_NF_CONNTRACK_LABELS


static inline int ctnetlink_label_size(const struct nf_conn *ct)
{
	struct nf_conn_labels *labels = nf_ct_labels_find(ct);

	if (!labels)
		return 0;
	return nla_total_size(sizeof(labels->bits));
}

Contributors
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Florian Westphal
41
97.62%
2
66.67%
Pablo Neira Ayuso
1
2.38%
1
33.33%
Total
42
100.00%
3
100.00%


static int

ctnetlink_dump_labels(struct sk_buff *skb, const struct nf_conn *ct)
{
	struct nf_conn_labels *labels = nf_ct_labels_find(ct);
	unsigned int i;

	if (!labels)
		return 0;

	i = 0;
	do {
		if (labels->bits[i] != 0)
			return nla_put(skb, CTA_LABELS, sizeof(labels->bits),
				       labels->bits);
		i++;
	} while (i < ARRAY_SIZE(labels->bits));

	return 0;
}
Contributors
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Florian Westphal
94
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2
100.00%
Total
94
100.00%
2
100.00%

#else

#define ctnetlink_dump_labels(a, b) (0)

#define ctnetlink_label_size(a)	(0)
#endif


#define master_tuple(ct) &(ct->master->tuplehash[IP_CT_DIR_ORIGINAL].tuple)



static int ctnetlink_dump_master(struct sk_buff *skb, const struct nf_conn *ct)
{
	struct nlattr *nest_parms;

	if (!(ct->status & IPS_EXPECTED))
		return 0;

	nest_parms = nla_nest_start(skb, CTA_TUPLE_MASTER | NLA_F_NESTED);
	if (!nest_parms)
		goto nla_put_failure;
	if (ctnetlink_dump_tuples(skb, master_tuple(ct)) < 0)
		goto nla_put_failure;
	nla_nest_end(skb, nest_parms);

	return 0;

nla_put_failure:
	return -1;
}

Contributors
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Pablo Neira Ayuso
88
100.00%
1
100.00%
Total
88
100.00%
1
100.00%


static int

dump_ct_seq_adj(struct sk_buff *skb, const struct nf_ct_seqadj *seq, int type)
{
	struct nlattr *nest_parms;

	nest_parms = nla_nest_start(skb, type | NLA_F_NESTED);
	if (!nest_parms)
		goto nla_put_failure;

	if (nla_put_be32(skb, CTA_SEQADJ_CORRECTION_POS,
			 htonl(seq->correction_pos)) ||
	    nla_put_be32(skb, CTA_SEQADJ_OFFSET_BEFORE,
			 htonl(seq->offset_before)) ||
	    nla_put_be32(skb, CTA_SEQADJ_OFFSET_AFTER,
			 htonl(seq->offset_after)))
		goto nla_put_failure;

	nla_nest_end(skb, nest_parms);

	return 0;

nla_put_failure:
	return -1;
}

Contributors
Person
Tokens
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Commits
CommitProp
Pablo Neira Ayuso
80
74.77%
1
25.00%
Patrick McHardy
16
14.95%
2
50.00%
David S. Miller
11
10.28%
1
25.00%
Total
107
100.00%
4
100.00%



static int ctnetlink_dump_ct_seq_adj(struct sk_buff *skb,
				     const struct nf_conn *ct)
{
	struct nf_conn_seqadj *seqadj = nfct_seqadj(ct);
	struct nf_ct_seqadj *seq;

	if (!(ct->status & IPS_SEQ_ADJUST) || !seqadj)
		return 0;

	seq = &seqadj->seq[IP_CT_DIR_ORIGINAL];
	if (dump_ct_seq_adj(skb, seq, CTA_SEQ_ADJ_ORIG) == -1)
		return -1;

	seq = &seqadj->seq[IP_CT_DIR_REPLY];
	if (dump_ct_seq_adj(skb, seq, CTA_SEQ_ADJ_REPLY) == -1)
		return -1;

	return 0;
}

Contributors
Person
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CommitProp
Pablo Neira Ayuso
88
81.48%
1
50.00%
Patrick McHardy
20
18.52%
1
50.00%
Total
108
100.00%
2
100.00%



static int ctnetlink_dump_id(struct sk_buff *skb, const struct nf_conn *ct)
{
	if (nla_put_be32(skb, CTA_ID, htonl((unsigned long)ct)))
		goto nla_put_failure;
	return 0;

nla_put_failure:
	return -1;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Pablo Neira Ayuso
30
63.83%
1
20.00%
Patrick McHardy
10
21.28%
3
60.00%
David S. Miller
7
14.89%
1
20.00%
Total
47
100.00%
5
100.00%



static int ctnetlink_dump_use(struct sk_buff *skb, const struct nf_conn *ct)
{
	if (nla_put_be32(skb, CTA_USE, htonl(atomic_read(&ct->ct_general.use))))
		goto nla_put_failure;
	return 0;

nla_put_failure:
	return -1;
}

Contributors
Person
Tokens
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Commits
CommitProp
Pablo Neira Ayuso
38
74.51%
1
25.00%
David S. Miller
7
13.73%
1
25.00%
Patrick McHardy
6
11.76%
2
50.00%
Total
51
100.00%
4
100.00%


static int

ctnetlink_fill_info(struct sk_buff *skb, u32 portid, u32 seq, u32 type,
		    struct nf_conn *ct)
{
	const struct nf_conntrack_zone *zone;
	struct nlmsghdr *nlh;
	struct nfgenmsg *nfmsg;
	struct nlattr *nest_parms;
	unsigned int flags = portid ? NLM_F_MULTI : 0, event;

	event = (NFNL_SUBSYS_CTNETLINK << 8 | IPCTNL_MSG_CT_NEW);
	nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags);
	if (nlh == NULL)
		goto nlmsg_failure;

	nfmsg = nlmsg_data(nlh);
	nfmsg->nfgen_family = nf_ct_l3num(ct);
	nfmsg->version      = NFNETLINK_V0;
	nfmsg->res_id	    = 0;

	zone = nf_ct_zone(ct);

	nest_parms = nla_nest_start(skb, CTA_TUPLE_ORIG | NLA_F_NESTED);
	if (!nest_parms)
		goto nla_put_failure;
	if (ctnetlink_dump_tuples(skb, nf_ct_tuple(ct, IP_CT_DIR_ORIGINAL)) < 0)
		goto nla_put_failure;
	if (ctnetlink_dump_zone_id(skb, CTA_TUPLE_ZONE, zone,
				   NF_CT_ZONE_DIR_ORIG) < 0)
		goto nla_put_failure;
	nla_nest_end(skb, nest_parms);

	nest_parms = nla_nest_start(skb, CTA_TUPLE_REPLY | NLA_F_NESTED);
	if (!nest_parms)
		goto nla_put_failure;
	if (ctnetlink_dump_tuples(skb, nf_ct_tuple(ct, IP_CT_DIR_REPLY)) < 0)
		goto nla_put_failure;
	if (ctnetlink_dump_zone_id(skb, CTA_TUPLE_ZONE, zone,
				   NF_CT_ZONE_DIR_REPL) < 0)
		goto nla_put_failure;
	nla_nest_end(skb, nest_parms);

	if (ctnetlink_dump_zone_id(skb, CTA_ZONE, zone,
				   NF_CT_DEFAULT_ZONE_DIR) < 0)
		goto nla_put_failure;

	if (ctnetlink_dump_status(skb, ct) < 0 ||
	    ctnetlink_dump_timeout(skb, ct) < 0 ||
	    ctnetlink_dump_acct(skb, ct, type) < 0 ||
	    ctnetlink_dump_timestamp(skb, ct) < 0 ||
	    ctnetlink_dump_protoinfo(skb, ct) < 0 ||
	    ctnetlink_dump_helpinfo(skb, ct) < 0 ||
	    ctnetlink_dump_mark(skb, ct) < 0 ||
	    ctnetlink_dump_secctx(skb, ct) < 0 ||
	    ctnetlink_dump_labels(skb, ct) < 0 ||
	    ctnetlink_dump_id(skb, ct) < 0 ||
	    ctnetlink_dump_use(skb, ct) < 0 ||
	    ctnetlink_dump_master(skb, ct) < 0 ||
	    ctnetlink_dump_ct_seq_adj(skb, ct) < 0)
		goto nla_put_failure;

	nlmsg_end(skb, nlh);
	return skb->len;

nlmsg_failure:
nla_put_failure:
	nlmsg_cancel(skb, nlh);
	return -1;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Pablo Neira Ayuso
305
71.26%
8
40.00%
Daniel Borkmann
59
13.79%
2
10.00%
Patrick McHardy
42
9.81%
4
20.00%
Florian Westphal
9
2.10%
1
5.00%
David S. Miller
4
0.93%
1
5.00%
Arnaldo Carvalho de Melo
4
0.93%
1
5.00%
Eric W. Biedermann
3
0.70%
1
5.00%
Holger Eitzenberger
1
0.23%
1
5.00%
Eric Paris
1
0.23%
1
5.00%
Total
428
100.00%
20
100.00%



static inline size_t ctnetlink_proto_size(const struct nf_conn *ct)
{
	struct nf_conntrack_l3proto *l3proto;
	struct nf_conntrack_l4proto *l4proto;
	size_t len = 0;

	rcu_read_lock();
	l3proto = __nf_ct_l3proto_find(nf_ct_l3num(ct));
	len += l3proto->nla_size;

	l4proto = __nf_ct_l4proto_find(nf_ct_l3num(ct), nf_ct_protonum(ct));
	len += l4proto->nla_size;
	rcu_read_unlock();

	return len;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Pablo Neira Ayuso
53
71.62%
1
50.00%
Holger Eitzenberger
21
28.38%
1
50.00%
Total
74
100.00%
2
100.00%



static inline size_t ctnetlink_acct_size(const struct nf_conn *ct)
{
	if (!nf_ct_ext_exist(ct, NF_CT_EXT_ACCT))
		return 0;
	return 2 * nla_total_size(0) /* CTA_COUNTERS_ORIG|REPL */
	       + 2 * nla_total_size_64bit(sizeof(uint64_t)) /* CTA_COUNTERS_PACKETS */
	       + 2 * nla_total_size_64bit(sizeof(uint64_t)) /* CTA_COUNTERS_BYTES */
	       ;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Jiri Pirko
51
89.47%
1
25.00%
Pablo Neira Ayuso
3
5.26%
1
25.00%
Nicolas Dichtel
2
3.51%
1
25.00%
Holger Eitzenberger
1
1.75%
1
25.00%
Total
57
100.00%
4
100.00%



static inline int ctnetlink_secctx_size(const struct nf_conn *ct)
{
#ifdef CONFIG_NF_CONNTRACK_SECMARK
	int len, ret;

	ret = security_secid_to_secctx(ct->secmark, NULL, &len);
	if (ret)
		return 0;

	return nla_total_size(0) /* CTA_SECCTX */
	       + nla_total_size(sizeof(char) * len); /* CTA_SECCTX_NAME */
#else
	return 0;
#endif
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Eric Paris
35
52.24%
1
50.00%
Pablo Neira Ayuso
32
47.76%
1
50.00%
Total
67
100.00%
2
100.00%



static inline size_t ctnetlink_timestamp_size(const struct nf_conn *ct)
{
#ifdef CONFIG_NF_CONNTRACK_TIMESTAMP
	if (!nf_ct_ext_exist(ct, NF_CT_EXT_TSTAMP))
		return 0;
	return nla_total_size(0) + 2 * nla_total_size_64bit(sizeof(uint64_t));
#else
	return 0;
#endif
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Pablo Neira Ayuso
48
92.31%
1
33.33%
Jiri Pirko
3
5.77%
1
33.33%
Nicolas Dichtel
1
1.92%
1
33.33%
Total
52
100.00%
3
100.00%

#ifdef CONFIG_NF_CONNTRACK_EVENTS


static size_t ctnetlink_nlmsg_size(const struct nf_conn *ct)
{
	return NLMSG_ALIGN(sizeof(struct nfgenmsg))
	       + 3 * nla_total_size(0) /* CTA_TUPLE_ORIG|REPL|MASTER */
	       + 3 * nla_total_size(0) /* CTA_TUPLE_IP */
	       + 3 * nla_total_size(0) /* CTA_TUPLE_PROTO */
	       + 3 * nla_total_size(sizeof(u_int8_t)) /* CTA_PROTO_NUM */
	       + nla_total_size(sizeof(u_int32_t)) /* CTA_ID */
	       + nla_total_size(sizeof(u_int32_t)) /* CTA_STATUS */
	       + ctnetlink_acct_size(ct)
	       + ctnetlink_timestamp_size(ct)
	       + nla_total_size(sizeof(u_int32_t)) /* CTA_TIMEOUT */
	       + nla_total_size(0) /* CTA_PROTOINFO */
	       + nla_total_size(0) /* CTA_HELP */
	       + nla_total_size(NF_CT_HELPER_NAME_LEN) /* CTA_HELP_NAME */
	       + ctnetlink_secctx_size(ct)
#ifdef CONFIG_NF_NAT_NEEDED
	       + 2 * nla_total_size(0) /* CTA_NAT_SEQ_ADJ_ORIG|REPL */
	       + 6 * nla_total_size(sizeof(u_int32_t)) /* CTA_NAT_SEQ_OFFSET */
#endif
#ifdef CONFIG_NF_CONNTRACK_MARK
	       + nla_total_size(sizeof(u_int32_t)) /* CTA_MARK */
#endif
#ifdef CONFIG_NF_CONNTRACK_ZONES
	       + nla_total_size(sizeof(u_int16_t)) /* CTA_ZONE|CTA_TUPLE_ZONE */
#endif
	       + ctnetlink_proto_size(ct)
	       + ctnetlink_label_size(ct)
	       ;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Holger Eitzenberger
108
60.34%
3
25.00%
Pablo Neira Ayuso
48
26.82%
4
33.33%
Ken-ichirou MATSUZAWA
13
7.26%
1
8.33%
Florian Westphal
5
2.79%
1
8.33%
Eric Paris
3
1.68%
1
8.33%
Jiri Pirko
1
0.56%
1
8.33%
Daniel Borkmann
1
0.56%
1
8.33%
Total
179
100.00%
12
100.00%


static int

ctnetlink_conntrack_event(unsigned int events, struct nf_ct_event *item)
{
	const struct nf_conntrack_zone *zone;
	struct net *net;
	struct nlmsghdr *nlh;
	struct nfgenmsg *nfmsg;
	struct nlattr *nest_parms;
	struct nf_conn *ct = item->ct;
	struct sk_buff *skb;