[linux-block.git] / net / netfilter / nf_conntrack_proto_udp.c

// SPDX-License-Identifier: GPL-2.0-only
/* (C) 1999-2001 Paul `Rusty' Russell
 * (C) 2002-2004 Netfilter Core Team <coreteam@netfilter.org>
 * (C) 2006-2012 Patrick McHardy <kaber@trash.net>
 */

#include <linux/types.h>
#include <linux/timer.h>
#include <linux/module.h>
#include <linux/udp.h>
#include <linux/seq_file.h>
#include <linux/skbuff.h>
#include <linux/ipv6.h>
#include <net/ip6_checksum.h>
#include <net/checksum.h>

#include <linux/netfilter.h>
#include <linux/netfilter_ipv4.h>
#include <linux/netfilter_ipv6.h>
#include <net/netfilter/nf_conntrack_l4proto.h>
#include <net/netfilter/nf_conntrack_ecache.h>
#include <net/netfilter/nf_conntrack_timeout.h>
#include <net/netfilter/nf_log.h>
#include <net/netfilter/ipv4/nf_conntrack_ipv4.h>
#include <net/netfilter/ipv6/nf_conntrack_ipv6.h>

static const unsigned int udp_timeouts[UDP_CT_MAX] = {
	[UDP_CT_UNREPLIED]	= 30*HZ,
	[UDP_CT_REPLIED]	= 120*HZ,
};

static unsigned int *udp_get_timeouts(struct net *net)
{
	return nf_udp_pernet(net)->timeouts;
}

static void udp_error_log(const struct sk_buff *skb,
			  const struct nf_hook_state *state,
			  const char *msg)
{
	nf_l4proto_log_invalid(skb, state->net, state->pf,
			       IPPROTO_UDP, "%s", msg);
}

static bool udp_error(struct sk_buff *skb,
		      unsigned int dataoff,
		      const struct nf_hook_state *state)
{
	unsigned int udplen = skb->len - dataoff;
	const struct udphdr *hdr;
	struct udphdr _hdr;

	/* Header is too small? */
	hdr = skb_header_pointer(skb, dataoff, sizeof(_hdr), &_hdr);
	if (!hdr) {
		udp_error_log(skb, state, "short packet");
		return true;
	}

	/* Truncated/malformed packets */
	if (ntohs(hdr->len) > udplen || ntohs(hdr->len) < sizeof(*hdr)) {
		udp_error_log(skb, state, "truncated/malformed packet");
		return true;
	}

	/* Packet with no checksum */
	if (!hdr->check)
		return false;

	/* Checksum invalid? Ignore.
	 * We skip checking packets on the outgoing path
	 * because the checksum is assumed to be correct.
	 * FIXME: Source route IP option packets --RR */
	if (state->hook == NF_INET_PRE_ROUTING &&
	    state->net->ct.sysctl_checksum &&
	    nf_checksum(skb, state->hook, dataoff, IPPROTO_UDP, state->pf)) {
		udp_error_log(skb, state, "bad checksum");
		return true;
	}

	return false;
}

/* Returns verdict for packet, and may modify conntracktype */
int nf_conntrack_udp_packet(struct nf_conn *ct,
			    struct sk_buff *skb,
			    unsigned int dataoff,
			    enum ip_conntrack_info ctinfo,
			    const struct nf_hook_state *state)
{
	unsigned int *timeouts;

	if (udp_error(skb, dataoff, state))
		return -NF_ACCEPT;

	timeouts = nf_ct_timeout_lookup(ct);
	if (!timeouts)
		timeouts = udp_get_timeouts(nf_ct_net(ct));

	if (!nf_ct_is_confirmed(ct))
		ct->proto.udp.stream_ts = 2 * HZ + jiffies;

	/* If we've seen traffic both ways, this is some kind of UDP
	 * stream. Set Assured.
	 */
	if (test_bit(IPS_SEEN_REPLY_BIT, &ct->status)) {
		unsigned long extra = timeouts[UDP_CT_UNREPLIED];

		/* Still active after two seconds? Extend timeout. */
		if (time_after(jiffies, ct->proto.udp.stream_ts))
			extra = timeouts[UDP_CT_REPLIED];

		nf_ct_refresh_acct(ct, ctinfo, skb, extra);

		/* never set ASSURED for IPS_NAT_CLASH, they time out soon */
		if (unlikely((ct->status & IPS_NAT_CLASH)))
			return NF_ACCEPT;

		/* Also, more likely to be important, and not a probe */
		if (!test_and_set_bit(IPS_ASSURED_BIT, &ct->status))
			nf_conntrack_event_cache(IPCT_ASSURED, ct);
	} else {
		nf_ct_refresh_acct(ct, ctinfo, skb, timeouts[UDP_CT_UNREPLIED]);
	}
	return NF_ACCEPT;
}

#ifdef CONFIG_NF_CT_PROTO_UDPLITE
static void udplite_error_log(const struct sk_buff *skb,
			      const struct nf_hook_state *state,
			      const char *msg)
{
	nf_l4proto_log_invalid(skb, state->net, state->pf,
			       IPPROTO_UDPLITE, "%s", msg);
}

static bool udplite_error(struct sk_buff *skb,
			  unsigned int dataoff,
			  const struct nf_hook_state *state)
{
	unsigned int udplen = skb->len - dataoff;
	const struct udphdr *hdr;
	struct udphdr _hdr;
	unsigned int cscov;

	/* Header is too small? */
	hdr = skb_header_pointer(skb, dataoff, sizeof(_hdr), &_hdr);
	if (!hdr) {
		udplite_error_log(skb, state, "short packet");
		return true;
	}

	cscov = ntohs(hdr->len);
	if (cscov == 0) {
		cscov = udplen;
	} else if (cscov < sizeof(*hdr) || cscov > udplen) {
		udplite_error_log(skb, state, "invalid checksum coverage");
		return true;
	}

	/* UDPLITE mandates checksums */
	if (!hdr->check) {
		udplite_error_log(skb, state, "checksum missing");
		return true;
	}

	/* Checksum invalid? Ignore. */
	if (state->hook == NF_INET_PRE_ROUTING &&
	    state->net->ct.sysctl_checksum &&
	    nf_checksum_partial(skb, state->hook, dataoff, cscov, IPPROTO_UDP,
				state->pf)) {
		udplite_error_log(skb, state, "bad checksum");
		return true;
	}

	return false;
}

/* Returns verdict for packet, and may modify conntracktype */
int nf_conntrack_udplite_packet(struct nf_conn *ct,
				struct sk_buff *skb,
				unsigned int dataoff,
				enum ip_conntrack_info ctinfo,
				const struct nf_hook_state *state)
{
	unsigned int *timeouts;

	if (udplite_error(skb, dataoff, state))
		return -NF_ACCEPT;

	timeouts = nf_ct_timeout_lookup(ct);
	if (!timeouts)
		timeouts = udp_get_timeouts(nf_ct_net(ct));

	/* If we've seen traffic both ways, this is some kind of UDP
	   stream.  Extend timeout. */
	if (test_bit(IPS_SEEN_REPLY_BIT, &ct->status)) {
		nf_ct_refresh_acct(ct, ctinfo, skb,
				   timeouts[UDP_CT_REPLIED]);

		if (unlikely((ct->status & IPS_NAT_CLASH)))
			return NF_ACCEPT;

		/* Also, more likely to be important, and not a probe */
		if (!test_and_set_bit(IPS_ASSURED_BIT, &ct->status))
			nf_conntrack_event_cache(IPCT_ASSURED, ct);
	} else {
		nf_ct_refresh_acct(ct, ctinfo, skb, timeouts[UDP_CT_UNREPLIED]);
	}
	return NF_ACCEPT;
}
#endif

#ifdef CONFIG_NF_CONNTRACK_TIMEOUT

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

static int udp_timeout_nlattr_to_obj(struct nlattr *tb[],
				     struct net *net, void *data)
{
	unsigned int *timeouts = data;
	struct nf_udp_net *un = nf_udp_pernet(net);

	if (!timeouts)
		timeouts = un->timeouts;

	/* set default timeouts for UDP. */
	timeouts[UDP_CT_UNREPLIED] = un->timeouts[UDP_CT_UNREPLIED];
	timeouts[UDP_CT_REPLIED] = un->timeouts[UDP_CT_REPLIED];

	if (tb[CTA_TIMEOUT_UDP_UNREPLIED]) {
		timeouts[UDP_CT_UNREPLIED] =
			ntohl(nla_get_be32(tb[CTA_TIMEOUT_UDP_UNREPLIED])) * HZ;
	}
	if (tb[CTA_TIMEOUT_UDP_REPLIED]) {
		timeouts[UDP_CT_REPLIED] =
			ntohl(nla_get_be32(tb[CTA_TIMEOUT_UDP_REPLIED])) * HZ;
	}
	return 0;
}

static int
udp_timeout_obj_to_nlattr(struct sk_buff *skb, const void *data)
{
	const unsigned int *timeouts = data;

	if (nla_put_be32(skb, CTA_TIMEOUT_UDP_UNREPLIED,
			 htonl(timeouts[UDP_CT_UNREPLIED] / HZ)) ||
	    nla_put_be32(skb, CTA_TIMEOUT_UDP_REPLIED,
			 htonl(timeouts[UDP_CT_REPLIED] / HZ)))
		goto nla_put_failure;
	return 0;

nla_put_failure:
	return -ENOSPC;
}

static const struct nla_policy
udp_timeout_nla_policy[CTA_TIMEOUT_UDP_MAX+1] = {
       [CTA_TIMEOUT_UDP_UNREPLIED]	= { .type = NLA_U32 },
       [CTA_TIMEOUT_UDP_REPLIED]	= { .type = NLA_U32 },
};
#endif /* CONFIG_NF_CONNTRACK_TIMEOUT */

void nf_conntrack_udp_init_net(struct net *net)
{
	struct nf_udp_net *un = nf_udp_pernet(net);
	int i;

	for (i = 0; i < UDP_CT_MAX; i++)
		un->timeouts[i] = udp_timeouts[i];
}

const struct nf_conntrack_l4proto nf_conntrack_l4proto_udp =
{
	.l4proto		= IPPROTO_UDP,
	.allow_clash		= true,
#if IS_ENABLED(CONFIG_NF_CT_NETLINK)
	.tuple_to_nlattr	= nf_ct_port_tuple_to_nlattr,
	.nlattr_to_tuple	= nf_ct_port_nlattr_to_tuple,
	.nlattr_tuple_size	= nf_ct_port_nlattr_tuple_size,
	.nla_policy		= nf_ct_port_nla_policy,
#endif
#ifdef CONFIG_NF_CONNTRACK_TIMEOUT
	.ctnl_timeout		= {
		.nlattr_to_obj	= udp_timeout_nlattr_to_obj,
		.obj_to_nlattr	= udp_timeout_obj_to_nlattr,
		.nlattr_max	= CTA_TIMEOUT_UDP_MAX,
		.obj_size	= sizeof(unsigned int) * CTA_TIMEOUT_UDP_MAX,
		.nla_policy	= udp_timeout_nla_policy,
	},
#endif /* CONFIG_NF_CONNTRACK_TIMEOUT */
};

#ifdef CONFIG_NF_CT_PROTO_UDPLITE
const struct nf_conntrack_l4proto nf_conntrack_l4proto_udplite =
{
	.l4proto		= IPPROTO_UDPLITE,
	.allow_clash		= true,
#if IS_ENABLED(CONFIG_NF_CT_NETLINK)
	.tuple_to_nlattr	= nf_ct_port_tuple_to_nlattr,
	.nlattr_to_tuple	= nf_ct_port_nlattr_to_tuple,
	.nlattr_tuple_size	= nf_ct_port_nlattr_tuple_size,
	.nla_policy		= nf_ct_port_nla_policy,
#endif
#ifdef CONFIG_NF_CONNTRACK_TIMEOUT
	.ctnl_timeout		= {
		.nlattr_to_obj	= udp_timeout_nlattr_to_obj,
		.obj_to_nlattr	= udp_timeout_obj_to_nlattr,
		.nlattr_max	= CTA_TIMEOUT_UDP_MAX,
		.obj_size	= sizeof(unsigned int) * CTA_TIMEOUT_UDP_MAX,
		.nla_policy	= udp_timeout_nla_policy,
	},
#endif /* CONFIG_NF_CONNTRACK_TIMEOUT */
};
#endif
Commit	Line	Data
d2912cb1	1	// SPDX-License-Identifier: GPL-2.0-only
9fb9cbb1 YK	2	/* (C) 1999-2001 Paul `Rusty' Russell
9fb9cbb1 YK	3	* (C) 2002-2004 Netfilter Core Team <coreteam@netfilter.org>
f229f6ce	4	* (C) 2006-2012 Patrick McHardy <kaber@trash.net>
9fb9cbb1 YK	5	*/
	6
	7	#include <linux/types.h>
9fb9cbb1 YK	8	#include <linux/timer.h>
9fb9cbb1 YK	9	#include <linux/module.h>
9fb9cbb1 YK	10	#include <linux/udp.h>
	11	#include <linux/seq_file.h>
	12	#include <linux/skbuff.h>
	13	#include <linux/ipv6.h>
	14	#include <net/ip6_checksum.h>
	15	#include <net/checksum.h>
f6180121	16
9fb9cbb1 YK	17	#include <linux/netfilter.h>
	18	#include <linux/netfilter_ipv4.h>
	19	#include <linux/netfilter_ipv6.h>
605dcad6	20	#include <net/netfilter/nf_conntrack_l4proto.h>
f6180121	21	#include <net/netfilter/nf_conntrack_ecache.h>
c779e849	22	#include <net/netfilter/nf_conntrack_timeout.h>
f01ffbd6	23	#include <net/netfilter/nf_log.h>
9d2493f8 CP	24	#include <net/netfilter/ipv4/nf_conntrack_ipv4.h>
9d2493f8 CP	25	#include <net/netfilter/ipv6/nf_conntrack_ipv6.h>
9fb9cbb1	26
2c9e8637	27	static const unsigned int udp_timeouts[UDP_CT_MAX] = {
5a41db94	28	[UDP_CT_UNREPLIED] = 30*HZ,
294304e4	29	[UDP_CT_REPLIED] = 120*HZ,
5a41db94	30	};
9fb9cbb1	31
2c8503f5 PNA	32	static unsigned int udp_get_timeouts(struct net net)
2c8503f5 PNA	33	{
a95a7774	34	return nf_udp_pernet(net)->timeouts;
2c8503f5 PNA	35	}
2c8503f5 PNA	36
83d213fd FW	37	static void udp_error_log(const struct sk_buff *skb,
	38	const struct nf_hook_state *state,
	39	const char *msg)
	40	{
	41	nf_l4proto_log_invalid(skb, state->net, state->pf,
	42	IPPROTO_UDP, "%s", msg);
	43	}
	44
	45	static bool udp_error(struct sk_buff *skb,
	46	unsigned int dataoff,
	47	const struct nf_hook_state *state)
	48	{
	49	unsigned int udplen = skb->len - dataoff;
	50	const struct udphdr *hdr;
	51	struct udphdr _hdr;
	52
	53	/* Header is too small? */
	54	hdr = skb_header_pointer(skb, dataoff, sizeof(_hdr), &_hdr);
	55	if (!hdr) {
	56	udp_error_log(skb, state, "short packet");
	57	return true;
	58	}
	59
	60	/* Truncated/malformed packets */
	61	if (ntohs(hdr->len) > udplen \|\| ntohs(hdr->len) < sizeof(*hdr)) {
	62	udp_error_log(skb, state, "truncated/malformed packet");
	63	return true;
	64	}
	65
	66	/* Packet with no checksum */
	67	if (!hdr->check)
	68	return false;
	69
	70	/* Checksum invalid? Ignore.
	71	* We skip checking packets on the outgoing path
	72	* because the checksum is assumed to be correct.
	73	* FIXME: Source route IP option packets --RR */
	74	if (state->hook == NF_INET_PRE_ROUTING &&
	75	state->net->ct.sysctl_checksum &&
	76	nf_checksum(skb, state->hook, dataoff, IPPROTO_UDP, state->pf)) {
	77	udp_error_log(skb, state, "bad checksum");
	78	return true;
	79	}
	80
	81	return false;
	82	}
	83
9fb9cbb1	84	/* Returns verdict for packet, and may modify conntracktype */
a47c5404 FW	85	int nf_conntrack_udp_packet(struct nf_conn *ct,
	86	struct sk_buff *skb,
	87	unsigned int dataoff,
	88	enum ip_conntrack_info ctinfo,
	89	const struct nf_hook_state *state)
9fb9cbb1	90	{
c779e849 FW	91	unsigned int *timeouts;
c779e849 FW	92
83d213fd FW	93	if (udp_error(skb, dataoff, state))
	94	return -NF_ACCEPT;
	95
c779e849 FW	96	timeouts = nf_ct_timeout_lookup(ct);
	97	if (!timeouts)
	98	timeouts = udp_get_timeouts(nf_ct_net(ct));
	99
d535c8a6 FW	100	if (!nf_ct_is_confirmed(ct))
	101	ct->proto.udp.stream_ts = 2 * HZ + jiffies;
	102
9fb9cbb1	103	/* If we've seen traffic both ways, this is some kind of UDP
d535c8a6 FW	104	* stream. Set Assured.
d535c8a6 FW	105	*/
c88130bc	106	if (test_bit(IPS_SEEN_REPLY_BIT, &ct->status)) {
d535c8a6 FW	107	unsigned long extra = timeouts[UDP_CT_UNREPLIED];
	108
	109	/* Still active after two seconds? Extend timeout. */
	110	if (time_after(jiffies, ct->proto.udp.stream_ts))
	111	extra = timeouts[UDP_CT_REPLIED];
	112
	113	nf_ct_refresh_acct(ct, ctinfo, skb, extra);
	114
c4617214 FW	115	/* never set ASSURED for IPS_NAT_CLASH, they time out soon */
	116	if (unlikely((ct->status & IPS_NAT_CLASH)))
	117	return NF_ACCEPT;
	118
9fb9cbb1	119	/* Also, more likely to be important, and not a probe */
c88130bc	120	if (!test_and_set_bit(IPS_ASSURED_BIT, &ct->status))
858b3133	121	nf_conntrack_event_cache(IPCT_ASSURED, ct);
5a41db94	122	} else {
c4617214	123	nf_ct_refresh_acct(ct, ctinfo, skb, timeouts[UDP_CT_UNREPLIED]);
5a41db94	124	}
9fb9cbb1 YK	125	return NF_ACCEPT;
	126	}
	127
e4781421	128	#ifdef CONFIG_NF_CT_PROTO_UDPLITE
93e66024 FW	129	static void udplite_error_log(const struct sk_buff *skb,
	130	const struct nf_hook_state *state,
	131	const char *msg)
c4f3db15	132	{
93e66024 FW	133	nf_l4proto_log_invalid(skb, state->net, state->pf,
93e66024 FW	134	IPPROTO_UDPLITE, "%s", msg);
c4f3db15 FW	135	}
c4f3db15 FW	136
83d213fd FW	137	static bool udplite_error(struct sk_buff *skb,
	138	unsigned int dataoff,
	139	const struct nf_hook_state *state)
e4781421 FW	140	{
	141	unsigned int udplen = skb->len - dataoff;
	142	const struct udphdr *hdr;
	143	struct udphdr _hdr;
	144	unsigned int cscov;
	145
	146	/* Header is too small? */
	147	hdr = skb_header_pointer(skb, dataoff, sizeof(_hdr), &_hdr);
	148	if (!hdr) {
93e66024	149	udplite_error_log(skb, state, "short packet");
83d213fd	150	return true;
e4781421 FW	151	}
	152
	153	cscov = ntohs(hdr->len);
	154	if (cscov == 0) {
	155	cscov = udplen;
	156	} else if (cscov < sizeof(*hdr) \|\| cscov > udplen) {
93e66024	157	udplite_error_log(skb, state, "invalid checksum coverage");
83d213fd	158	return true;
e4781421 FW	159	}
	160
	161	/* UDPLITE mandates checksums */
	162	if (!hdr->check) {
93e66024	163	udplite_error_log(skb, state, "checksum missing");
83d213fd	164	return true;
e4781421 FW	165	}
	166
	167	/* Checksum invalid? Ignore. */
93e66024 FW	168	if (state->hook == NF_INET_PRE_ROUTING &&
	169	state->net->ct.sysctl_checksum &&
	170	nf_checksum_partial(skb, state->hook, dataoff, cscov, IPPROTO_UDP,
	171	state->pf)) {
	172	udplite_error_log(skb, state, "bad checksum");
83d213fd	173	return true;
e4781421 FW	174	}
e4781421 FW	175
83d213fd	176	return false;
e4781421	177	}
e4781421	178
83d213fd	179	/* Returns verdict for packet, and may modify conntracktype */
a47c5404 FW	180	int nf_conntrack_udplite_packet(struct nf_conn *ct,
	181	struct sk_buff *skb,
	182	unsigned int dataoff,
	183	enum ip_conntrack_info ctinfo,
	184	const struct nf_hook_state *state)
9fb9cbb1	185	{
83d213fd	186	unsigned int *timeouts;
9fb9cbb1	187
83d213fd	188	if (udplite_error(skb, dataoff, state))
9fb9cbb1	189	return -NF_ACCEPT;
9fb9cbb1	190
83d213fd FW	191	timeouts = nf_ct_timeout_lookup(ct);
	192	if (!timeouts)
	193	timeouts = udp_get_timeouts(nf_ct_net(ct));
9fb9cbb1	194
83d213fd FW	195	/* If we've seen traffic both ways, this is some kind of UDP
	196	stream. Extend timeout. */
	197	if (test_bit(IPS_SEEN_REPLY_BIT, &ct->status)) {
	198	nf_ct_refresh_acct(ct, ctinfo, skb,
	199	timeouts[UDP_CT_REPLIED]);
c4617214 FW	200
	201	if (unlikely((ct->status & IPS_NAT_CLASH)))
	202	return NF_ACCEPT;
	203
83d213fd FW	204	/* Also, more likely to be important, and not a probe */
	205	if (!test_and_set_bit(IPS_ASSURED_BIT, &ct->status))
	206	nf_conntrack_event_cache(IPCT_ASSURED, ct);
	207	} else {
c4617214	208	nf_ct_refresh_acct(ct, ctinfo, skb, timeouts[UDP_CT_UNREPLIED]);
9fb9cbb1	209	}
9fb9cbb1 YK	210	return NF_ACCEPT;
9fb9cbb1 YK	211	}
83d213fd	212	#endif
9fb9cbb1	213
a874752a	214	#ifdef CONFIG_NF_CONNTRACK_TIMEOUT
50978462 PNA	215
	216	#include <linux/netfilter/nfnetlink.h>
	217	#include <linux/netfilter/nfnetlink_cttimeout.h>
	218
8264deb8 G	219	static int udp_timeout_nlattr_to_obj(struct nlattr *tb[],
8264deb8 G	220	struct net net, void data)
50978462 PNA	221	{
50978462 PNA	222	unsigned int *timeouts = data;
a95a7774	223	struct nf_udp_net *un = nf_udp_pernet(net);
50978462	224
c779e849 FW	225	if (!timeouts)
	226	timeouts = un->timeouts;
	227
50978462	228	/* set default timeouts for UDP. */
8264deb8 G	229	timeouts[UDP_CT_UNREPLIED] = un->timeouts[UDP_CT_UNREPLIED];
8264deb8 G	230	timeouts[UDP_CT_REPLIED] = un->timeouts[UDP_CT_REPLIED];
50978462 PNA	231
	232	if (tb[CTA_TIMEOUT_UDP_UNREPLIED]) {
	233	timeouts[UDP_CT_UNREPLIED] =
	234	ntohl(nla_get_be32(tb[CTA_TIMEOUT_UDP_UNREPLIED])) * HZ;
	235	}
	236	if (tb[CTA_TIMEOUT_UDP_REPLIED]) {
	237	timeouts[UDP_CT_REPLIED] =
	238	ntohl(nla_get_be32(tb[CTA_TIMEOUT_UDP_REPLIED])) * HZ;
	239	}
	240	return 0;
	241	}
	242
	243	static int
	244	udp_timeout_obj_to_nlattr(struct sk_buff skb, const void data)
	245	{
	246	const unsigned int *timeouts = data;
	247
3c60a17b DM	248	if (nla_put_be32(skb, CTA_TIMEOUT_UDP_UNREPLIED,
	249	htonl(timeouts[UDP_CT_UNREPLIED] / HZ)) \|\|
	250	nla_put_be32(skb, CTA_TIMEOUT_UDP_REPLIED,
	251	htonl(timeouts[UDP_CT_REPLIED] / HZ)))
	252	goto nla_put_failure;
50978462 PNA	253	return 0;
	254
	255	nla_put_failure:
	256	return -ENOSPC;
	257	}
	258
	259	static const struct nla_policy
	260	udp_timeout_nla_policy[CTA_TIMEOUT_UDP_MAX+1] = {
	261	[CTA_TIMEOUT_UDP_UNREPLIED] = { .type = NLA_U32 },
	262	[CTA_TIMEOUT_UDP_REPLIED] = { .type = NLA_U32 },
	263	};
a874752a	264	#endif /* CONFIG_NF_CONNTRACK_TIMEOUT */
50978462	265
2a389de8	266	void nf_conntrack_udp_init_net(struct net *net)
0ce490ad	267	{
a95a7774	268	struct nf_udp_net *un = nf_udp_pernet(net);
2a389de8	269	int i;
0ce490ad	270
2a389de8 FW	271	for (i = 0; i < UDP_CT_MAX; i++)
2a389de8 FW	272	un->timeouts[i] = udp_timeouts[i];
08911475 PNA	273	}
08911475 PNA	274
dd2934a9	275	const struct nf_conntrack_l4proto nf_conntrack_l4proto_udp =
9fb9cbb1	276	{
605dcad6	277	.l4proto = IPPROTO_UDP,
71d8c47f	278	.allow_clash = true,
c0cd1156	279	#if IS_ENABLED(CONFIG_NF_CT_NETLINK)
fdf70832 PM	280	.tuple_to_nlattr = nf_ct_port_tuple_to_nlattr,
fdf70832 PM	281	.nlattr_to_tuple = nf_ct_port_nlattr_to_tuple,
a400c30e	282	.nlattr_tuple_size = nf_ct_port_nlattr_tuple_size,
f73e924c	283	.nla_policy = nf_ct_port_nla_policy,
c1d10adb	284	#endif
a874752a	285	#ifdef CONFIG_NF_CONNTRACK_TIMEOUT
50978462 PNA	286	.ctnl_timeout = {
	287	.nlattr_to_obj = udp_timeout_nlattr_to_obj,
	288	.obj_to_nlattr = udp_timeout_obj_to_nlattr,
	289	.nlattr_max = CTA_TIMEOUT_UDP_MAX,
	290	.obj_size = sizeof(unsigned int) * CTA_TIMEOUT_UDP_MAX,
	291	.nla_policy = udp_timeout_nla_policy,
	292	},
a874752a	293	#endif /* CONFIG_NF_CONNTRACK_TIMEOUT */
9fb9cbb1 YK	294	};
9fb9cbb1 YK	295
e4781421	296	#ifdef CONFIG_NF_CT_PROTO_UDPLITE
dd2934a9	297	const struct nf_conntrack_l4proto nf_conntrack_l4proto_udplite =
e4781421	298	{
e4781421	299	.l4proto = IPPROTO_UDPLITE,
e4781421	300	.allow_clash = true,
e4781421 FW	301	#if IS_ENABLED(CONFIG_NF_CT_NETLINK)
	302	.tuple_to_nlattr = nf_ct_port_tuple_to_nlattr,
	303	.nlattr_to_tuple = nf_ct_port_nlattr_to_tuple,
	304	.nlattr_tuple_size = nf_ct_port_nlattr_tuple_size,
	305	.nla_policy = nf_ct_port_nla_policy,
	306	#endif
a874752a	307	#ifdef CONFIG_NF_CONNTRACK_TIMEOUT
e4781421 FW	308	.ctnl_timeout = {
	309	.nlattr_to_obj = udp_timeout_nlattr_to_obj,
	310	.obj_to_nlattr = udp_timeout_obj_to_nlattr,
	311	.nlattr_max = CTA_TIMEOUT_UDP_MAX,
	312	.obj_size = sizeof(unsigned int) * CTA_TIMEOUT_UDP_MAX,
	313	.nla_policy = udp_timeout_nla_policy,
	314	},
a874752a	315	#endif /* CONFIG_NF_CONNTRACK_TIMEOUT */
e4781421	316	};
e4781421	317	#endif