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netfilter: nf_nat: export NAT definitions to userspace 

Export the NAT definitions to userspace. So far userspace (specifically,
iptables) has been copying the headers files from include/net. Also
rename some structures and definitions in preparation for IPv6 NAT.
Since these have never been officially exported, this doesn't affect
existing userspace code.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Patrick McHardy 2011-12-23 13:59:49 +01:00 committed by Pablo Neira Ayuso
parent 3d058d7bc2
commit cbc9f2f4fc
29 changed files with 185 additions and 194 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
include/linux/netfilter/Kbuild
View File

@ -5,6 +5,7 @@ header-y += nf_conntrack_ftp.h
header-y += nf_conntrack_sctp.h
header-y += nf_conntrack_tcp.h
header-y += nf_conntrack_tuple_common.h
header-y += nf_nat.h
header-y += nfnetlink.h
header-y += nfnetlink_compat.h
header-y += nfnetlink_conntrack.h

27
include/linux/netfilter/nf_conntrack_tuple_common.h
View File

@ -7,6 +7,33 @@ enum ip_conntrack_dir {
IP_CT_DIR_MAX
};
/* The protocol-specific manipulable parts of the tuple: always in
* network order
*/
union nf_conntrack_man_proto {
/* Add other protocols here. */
__be16 all;
struct {
__be16 port;
} tcp;
struct {
__be16 port;
} udp;
struct {
__be16 id;
} icmp;
struct {
__be16 port;
} dccp;
struct {
__be16 port;
} sctp;
struct {
__be16 key; /* GRE key is 32bit, PPtP only uses 16bit */
} gre;
};
#define CTINFO2DIR(ctinfo) ((ctinfo) >= IP_CT_IS_REPLY ? IP_CT_DIR_REPLY : IP_CT_DIR_ORIGINAL)
#endif /* _NF_CONNTRACK_TUPLE_COMMON_H */

25
include/linux/netfilter/nf_nat.h Normal file
View File

@ -0,0 +1,25 @@
#ifndef _NETFILTER_NF_NAT_H
#define _NETFILTER_NF_NAT_H
#include <linux/netfilter.h>
#include <linux/netfilter/nf_conntrack_tuple_common.h>
#define NF_NAT_RANGE_MAP_IPS 1
#define NF_NAT_RANGE_PROTO_SPECIFIED 2
#define NF_NAT_RANGE_PROTO_RANDOM 4
#define NF_NAT_RANGE_PERSISTENT 8
struct nf_nat_ipv4_range {
unsigned int flags;
__be32 min_ip;
__be32 max_ip;
union nf_conntrack_man_proto min;
union nf_conntrack_man_proto max;
};
struct nf_nat_ipv4_multi_range_compat {
unsigned int rangesize;
struct nf_nat_ipv4_range range[1];
};
#endif /* _NETFILTER_NF_NAT_H */

1
include/linux/netfilter_ipv4/Kbuild
View File

@ -12,4 +12,3 @@ header-y += ipt_ah.h
header-y += ipt_ecn.h
header-y += ipt_realm.h
header-y += ipt_ttl.h
header-y += nf_nat.h

58
include/linux/netfilter_ipv4/nf_nat.h
View File

@ -1,58 +0,0 @@
#ifndef _LINUX_NF_NAT_H
#define _LINUX_NF_NAT_H
#include <linux/types.h>
#define IP_NAT_RANGE_MAP_IPS 1
#define IP_NAT_RANGE_PROTO_SPECIFIED 2
#define IP_NAT_RANGE_PROTO_RANDOM 4
#define IP_NAT_RANGE_PERSISTENT 8
/* The protocol-specific manipulable parts of the tuple. */
union nf_conntrack_man_proto {
/* Add other protocols here. */
__be16 all;
struct {
__be16 port;
} tcp;
struct {
__be16 port;
} udp;
struct {
__be16 id;
} icmp;
struct {
__be16 port;
} dccp;
struct {
__be16 port;
} sctp;
struct {
__be16 key; /* GRE key is 32bit, PPtP only uses 16bit */
} gre;
};
/* Single range specification. */
struct nf_nat_range {
/* Set to OR of flags above. */
unsigned int flags;
/* Inclusive: network order. */
__be32 min_ip, max_ip;
/* Inclusive: network order */
union nf_conntrack_man_proto min, max;
};
/* For backwards compat: don't use in modern code. */
struct nf_nat_multi_range_compat {
unsigned int rangesize; /* Must be 1. */
/* hangs off end. */
struct nf_nat_range range[1];
};
#define nf_nat_multi_range nf_nat_multi_range_compat
#endif

1
include/net/netfilter/nf_conntrack_tuple.h
View File

@ -12,7 +12,6 @@
#include <linux/netfilter/x_tables.h>
#include <linux/netfilter/nf_conntrack_tuple_common.h>
#include <linux/netfilter_ipv4/nf_nat.h>
#include <linux/list_nulls.h>
/* A `tuple' is a structure containing the information to uniquely

10
include/net/netfilter/nf_nat.h
View File

@ -1,14 +1,12 @@
#ifndef _NF_NAT_H
#define _NF_NAT_H
#include <linux/netfilter_ipv4.h>
#include <linux/netfilter_ipv4/nf_nat.h>
#include <linux/netfilter/nf_nat.h>
#include <net/netfilter/nf_conntrack_tuple.h>
#define NF_NAT_MAPPING_TYPE_MAX_NAMELEN 16
enum nf_nat_manip_type {
IP_NAT_MANIP_SRC,
IP_NAT_MANIP_DST
NF_NAT_MANIP_SRC,
NF_NAT_MANIP_DST
};
/* SRC manip occurs POST_ROUTING or LOCAL_IN */
@ -52,7 +50,7 @@ struct nf_conn_nat {
/* Set up the info structure to map into this range. */
extern unsigned int nf_nat_setup_info(struct nf_conn *ct,
const struct nf_nat_range *range,
const struct nf_nat_ipv4_range *range,
enum nf_nat_manip_type maniptype);
/* Is this tuple already taken? (not by us)*/

2
include/net/netfilter/nf_nat_core.h
View File

@ -20,7 +20,7 @@ extern int nf_nat_icmp_reply_translation(struct nf_conn *ct,
static inline int nf_nat_initialized(struct nf_conn *ct,
enum nf_nat_manip_type manip)
{
if (manip == IP_NAT_MANIP_SRC)
if (manip == NF_NAT_MANIP_SRC)
return ct->status & IPS_SRC_NAT_DONE;
else
return ct->status & IPS_DST_NAT_DONE;

14
include/net/netfilter/nf_nat_protocol.h
View File

@ -4,7 +4,7 @@
#include <net/netfilter/nf_nat.h>
#include <linux/netfilter/nfnetlink_conntrack.h>
struct nf_nat_range;
struct nf_nat_ipv4_range;
struct nf_nat_protocol {
/* Protocol number. */
@ -30,15 +30,15 @@ struct nf_nat_protocol {
possible. Per-protocol part of tuple is initialized to the
incoming packet. */
void (*unique_tuple)(struct nf_conntrack_tuple *tuple,
const struct nf_nat_range *range,
const struct nf_nat_ipv4_range *range,
enum nf_nat_manip_type maniptype,
const struct nf_conn *ct);
int (*range_to_nlattr)(struct sk_buff *skb,
const struct nf_nat_range *range);
const struct nf_nat_ipv4_range *range);
int (*nlattr_to_range)(struct nlattr *tb[],
struct nf_nat_range *range);
struct nf_nat_ipv4_range *range);
};
/* Protocol registration. */
@ -61,14 +61,14 @@ extern bool nf_nat_proto_in_range(const struct nf_conntrack_tuple *tuple,
const union nf_conntrack_man_proto *max);
extern void nf_nat_proto_unique_tuple(struct nf_conntrack_tuple *tuple,
const struct nf_nat_range *range,
const struct nf_nat_ipv4_range *range,
enum nf_nat_manip_type maniptype,
const struct nf_conn *ct,
u_int16_t *rover);
extern int nf_nat_proto_range_to_nlattr(struct sk_buff *skb,
const struct nf_nat_range *range);
const struct nf_nat_ipv4_range *range);
extern int nf_nat_proto_nlattr_to_range(struct nlattr *tb[],
struct nf_nat_range *range);
struct nf_nat_ipv4_range *range);
#endif /*_NF_NAT_PROTO_H*/

16
net/ipv4/netfilter/ipt_MASQUERADE.c
View File

@ -30,9 +30,9 @@ MODULE_DESCRIPTION("Xtables: automatic-address SNAT");
/* FIXME: Multiple targets. --RR */
static int masquerade_tg_check(const struct xt_tgchk_param *par)
{
const struct nf_nat_multi_range_compat *mr = par->targinfo;
const struct nf_nat_ipv4_multi_range_compat *mr = par->targinfo;
if (mr->range[0].flags & IP_NAT_RANGE_MAP_IPS) {
if (mr->range[0].flags & NF_NAT_RANGE_MAP_IPS) {
pr_debug("bad MAP_IPS.\n");
return -EINVAL;
}
@ -49,8 +49,8 @@ masquerade_tg(struct sk_buff *skb, const struct xt_action_param *par)
struct nf_conn *ct;
struct nf_conn_nat *nat;
enum ip_conntrack_info ctinfo;
struct nf_nat_range newrange;
const struct nf_nat_multi_range_compat *mr;
struct nf_nat_ipv4_range newrange;
const struct nf_nat_ipv4_multi_range_compat *mr;
const struct rtable *rt;
__be32 newsrc;
@ -79,13 +79,13 @@ masquerade_tg(struct sk_buff *skb, const struct xt_action_param *par)
nat->masq_index = par->out->ifindex;
/* Transfer from original range. */
newrange = ((struct nf_nat_range)
{ mr->range[0].flags | IP_NAT_RANGE_MAP_IPS,
newrange = ((struct nf_nat_ipv4_range)
{ mr->range[0].flags | NF_NAT_RANGE_MAP_IPS,
newsrc, newsrc,
mr->range[0].min, mr->range[0].max });
/* Hand modified range to generic setup. */
return nf_nat_setup_info(ct, &newrange, IP_NAT_MANIP_SRC);
return nf_nat_setup_info(ct, &newrange, NF_NAT_MANIP_SRC);
}
static int
@ -139,7 +139,7 @@ static struct xt_target masquerade_tg_reg __read_mostly = {
.name = "MASQUERADE",
.family = NFPROTO_IPV4,
.target = masquerade_tg,
.targetsize = sizeof(struct nf_nat_multi_range_compat),
.targetsize = sizeof(struct nf_nat_ipv4_multi_range_compat),
.table = "nat",
.hooks = 1 << NF_INET_POST_ROUTING,
.checkentry = masquerade_tg_check,

14
net/ipv4/netfilter/ipt_NETMAP.c
View File

@ -24,9 +24,9 @@ MODULE_DESCRIPTION("Xtables: 1:1 NAT mapping of IPv4 subnets");
static int netmap_tg_check(const struct xt_tgchk_param *par)
{
const struct nf_nat_multi_range_compat *mr = par->targinfo;
const struct nf_nat_ipv4_multi_range_compat *mr = par->targinfo;
if (!(mr->range[0].flags & IP_NAT_RANGE_MAP_IPS)) {
if (!(mr->range[0].flags & NF_NAT_RANGE_MAP_IPS)) {
pr_debug("bad MAP_IPS.\n");
return -EINVAL;
}
@ -43,8 +43,8 @@ netmap_tg(struct sk_buff *skb, const struct xt_action_param *par)
struct nf_conn *ct;
enum ip_conntrack_info ctinfo;
__be32 new_ip, netmask;
const struct nf_nat_multi_range_compat *mr = par->targinfo;
struct nf_nat_range newrange;
const struct nf_nat_ipv4_multi_range_compat *mr = par->targinfo;
struct nf_nat_ipv4_range newrange;
NF_CT_ASSERT(par->hooknum == NF_INET_PRE_ROUTING ||
par->hooknum == NF_INET_POST_ROUTING ||
@ -61,8 +61,8 @@ netmap_tg(struct sk_buff *skb, const struct xt_action_param *par)
new_ip = ip_hdr(skb)->saddr & ~netmask;
new_ip |= mr->range[0].min_ip & netmask;
newrange = ((struct nf_nat_range)
{ mr->range[0].flags | IP_NAT_RANGE_MAP_IPS,
newrange = ((struct nf_nat_ipv4_range)
{ mr->range[0].flags | NF_NAT_RANGE_MAP_IPS,
new_ip, new_ip,
mr->range[0].min, mr->range[0].max });
@ -74,7 +74,7 @@ static struct xt_target netmap_tg_reg __read_mostly = {
.name = "NETMAP",
.family = NFPROTO_IPV4,
.target = netmap_tg,
.targetsize = sizeof(struct nf_nat_multi_range_compat),
.targetsize = sizeof(struct nf_nat_ipv4_multi_range_compat),
.table = "nat",
.hooks = (1 << NF_INET_PRE_ROUTING) |
(1 << NF_INET_POST_ROUTING) |

16
net/ipv4/netfilter/ipt_REDIRECT.c
View File

@ -28,9 +28,9 @@ MODULE_DESCRIPTION("Xtables: Connection redirection to localhost");
/* FIXME: Take multiple ranges --RR */
static int redirect_tg_check(const struct xt_tgchk_param *par)
{
const struct nf_nat_multi_range_compat *mr = par->targinfo;
const struct nf_nat_ipv4_multi_range_compat *mr = par->targinfo;
if (mr->range[0].flags & IP_NAT_RANGE_MAP_IPS) {
if (mr->range[0].flags & NF_NAT_RANGE_MAP_IPS) {
pr_debug("bad MAP_IPS.\n");
return -EINVAL;
}
@ -47,8 +47,8 @@ redirect_tg(struct sk_buff *skb, const struct xt_action_param *par)
struct nf_conn *ct;
enum ip_conntrack_info ctinfo;
__be32 newdst;
const struct nf_nat_multi_range_compat *mr = par->targinfo;
struct nf_nat_range newrange;
const struct nf_nat_ipv4_multi_range_compat *mr = par->targinfo;
struct nf_nat_ipv4_range newrange;
NF_CT_ASSERT(par->hooknum == NF_INET_PRE_ROUTING ||
par->hooknum == NF_INET_LOCAL_OUT);
@ -76,20 +76,20 @@ redirect_tg(struct sk_buff *skb, const struct xt_action_param *par)
}
/* Transfer from original range. */
newrange = ((struct nf_nat_range)
{ mr->range[0].flags | IP_NAT_RANGE_MAP_IPS,
newrange = ((struct nf_nat_ipv4_range)
{ mr->range[0].flags | NF_NAT_RANGE_MAP_IPS,
newdst, newdst,
mr->range[0].min, mr->range[0].max });
/* Hand modified range to generic setup. */
return nf_nat_setup_info(ct, &newrange, IP_NAT_MANIP_DST);
return nf_nat_setup_info(ct, &newrange, NF_NAT_MANIP_DST);
}
static struct xt_target redirect_tg_reg __read_mostly = {
.name = "REDIRECT",
.family = NFPROTO_IPV4,
.target = redirect_tg,
.targetsize = sizeof(struct nf_nat_multi_range_compat),
.targetsize = sizeof(struct nf_nat_ipv4_multi_range_compat),
.table = "nat",
.hooks = (1 << NF_INET_PRE_ROUTING) | (1 << NF_INET_LOCAL_OUT),
.checkentry = redirect_tg_check,

54
net/ipv4/netfilter/nf_nat_core.c
View File

@ -82,14 +82,14 @@ EXPORT_SYMBOL(nf_nat_used_tuple);
* that meet the constraints of range. */
static int
in_range(const struct nf_conntrack_tuple *tuple,
const struct nf_nat_range *range)
const struct nf_nat_ipv4_range *range)
{
const struct nf_nat_protocol *proto;
int ret = 0;
/* If we are supposed to map IPs, then we must be in the
range specified, otherwise let this drag us onto a new src IP. */
if (range->flags & IP_NAT_RANGE_MAP_IPS) {
if (range->flags & NF_NAT_RANGE_MAP_IPS) {
if (ntohl(tuple->src.u3.ip) < ntohl(range->min_ip) ||
ntohl(tuple->src.u3.ip) > ntohl(range->max_ip))
return 0;
@ -97,8 +97,8 @@ in_range(const struct nf_conntrack_tuple *tuple,
rcu_read_lock();
proto = __nf_nat_proto_find(tuple->dst.protonum);
if (!(range->flags & IP_NAT_RANGE_PROTO_SPECIFIED) ||
proto->in_range(tuple, IP_NAT_MANIP_SRC,
if (!(range->flags & NF_NAT_RANGE_PROTO_SPECIFIED) ||
proto->in_range(tuple, NF_NAT_MANIP_SRC,
&range->min, &range->max))
ret = 1;
rcu_read_unlock();
@ -123,7 +123,7 @@ static int
find_appropriate_src(struct net *net, u16 zone,
const struct nf_conntrack_tuple *tuple,
struct nf_conntrack_tuple *result,
const struct nf_nat_range *range)
const struct nf_nat_ipv4_range *range)
{
unsigned int h = hash_by_src(net, zone, tuple);
const struct nf_conn_nat *nat;
@ -157,7 +157,7 @@ find_appropriate_src(struct net *net, u16 zone,
*/
static void
find_best_ips_proto(u16 zone, struct nf_conntrack_tuple *tuple,
const struct nf_nat_range *range,
const struct nf_nat_ipv4_range *range,
const struct nf_conn *ct,
enum nf_nat_manip_type maniptype)
{
@ -166,10 +166,10 @@ find_best_ips_proto(u16 zone, struct nf_conntrack_tuple *tuple,
u_int32_t minip, maxip, j;
/* No IP mapping? Do nothing. */
if (!(range->flags & IP_NAT_RANGE_MAP_IPS))
if (!(range->flags & NF_NAT_RANGE_MAP_IPS))
return;
if (maniptype == IP_NAT_MANIP_SRC)
if (maniptype == NF_NAT_MANIP_SRC)
var_ipp = &tuple->src.u3.ip;
else
var_ipp = &tuple->dst.u3.ip;
@ -189,7 +189,7 @@ find_best_ips_proto(u16 zone, struct nf_conntrack_tuple *tuple,
minip = ntohl(range->min_ip);
maxip = ntohl(range->max_ip);
j = jhash_2words((__force u32)tuple->src.u3.ip,
range->flags & IP_NAT_RANGE_PERSISTENT ?
range->flags & NF_NAT_RANGE_PERSISTENT ?
0 : (__force u32)tuple->dst.u3.ip ^ zone, 0);
j = ((u64)j * (maxip - minip + 1)) >> 32;
*var_ipp = htonl(minip + j);
@ -204,7 +204,7 @@ find_best_ips_proto(u16 zone, struct nf_conntrack_tuple *tuple,
static void
get_unique_tuple(struct nf_conntrack_tuple *tuple,
const struct nf_conntrack_tuple *orig_tuple,
const struct nf_nat_range *range,
const struct nf_nat_ipv4_range *range,
struct nf_conn *ct,
enum nf_nat_manip_type maniptype)
{
@ -219,8 +219,8 @@ get_unique_tuple(struct nf_conntrack_tuple *tuple,
This is only required for source (ie. NAT/masq) mappings.
So far, we don't do local source mappings, so multiple
manips not an issue. */
if (maniptype == IP_NAT_MANIP_SRC &&
!(range->flags & IP_NAT_RANGE_PROTO_RANDOM)) {
if (maniptype == NF_NAT_MANIP_SRC &&
!(range->flags & NF_NAT_RANGE_PROTO_RANDOM)) {
/* try the original tuple first */
if (in_range(orig_tuple, range)) {
if (!nf_nat_used_tuple(orig_tuple, ct)) {
@ -247,8 +247,8 @@ get_unique_tuple(struct nf_conntrack_tuple *tuple,
proto = __nf_nat_proto_find(orig_tuple->dst.protonum);
/* Only bother mapping if it's not already in range and unique */
if (!(range->flags & IP_NAT_RANGE_PROTO_RANDOM)) {
if (range->flags & IP_NAT_RANGE_PROTO_SPECIFIED) {
if (!(range->flags & NF_NAT_RANGE_PROTO_RANDOM)) {
if (range->flags & NF_NAT_RANGE_PROTO_SPECIFIED) {
if (proto->in_range(tuple, maniptype, &range->min,
&range->max) &&
(range->min.all == range->max.all ||
@ -267,7 +267,7 @@ out:
unsigned int
nf_nat_setup_info(struct nf_conn *ct,
const struct nf_nat_range *range,
const struct nf_nat_ipv4_range *range,
enum nf_nat_manip_type maniptype)
{
struct net *net = nf_ct_net(ct);
@ -284,8 +284,8 @@ nf_nat_setup_info(struct nf_conn *ct,
}
}
NF_CT_ASSERT(maniptype == IP_NAT_MANIP_SRC ||
maniptype == IP_NAT_MANIP_DST);
NF_CT_ASSERT(maniptype == NF_NAT_MANIP_SRC ||
maniptype == NF_NAT_MANIP_DST);
BUG_ON(nf_nat_initialized(ct, maniptype));
/* What we've got will look like inverse of reply. Normally
@ -306,13 +306,13 @@ nf_nat_setup_info(struct nf_conn *ct,
nf_conntrack_alter_reply(ct, &reply);
/* Non-atomic: we own this at the moment. */
if (maniptype == IP_NAT_MANIP_SRC)
if (maniptype == NF_NAT_MANIP_SRC)
ct->status |= IPS_SRC_NAT;
else
ct->status |= IPS_DST_NAT;
}
if (maniptype == IP_NAT_MANIP_SRC) {
if (maniptype == NF_NAT_MANIP_SRC) {
unsigned int srchash;
srchash = hash_by_src(net, nf_ct_zone(ct),
@ -327,7 +327,7 @@ nf_nat_setup_info(struct nf_conn *ct,
}
/* It's done. */
if (maniptype == IP_NAT_MANIP_DST)
if (maniptype == NF_NAT_MANIP_DST)
ct->status |= IPS_DST_NAT_DONE;
else
ct->status |= IPS_SRC_NAT_DONE;
@ -361,7 +361,7 @@ manip_pkt(u_int16_t proto,
iph = (void *)skb->data + iphdroff;
if (maniptype == IP_NAT_MANIP_SRC) {
if (maniptype == NF_NAT_MANIP_SRC) {
csum_replace4(&iph->check, iph->saddr, target->src.u3.ip);
iph->saddr = target->src.u3.ip;
} else {
@ -381,7 +381,7 @@ unsigned int nf_nat_packet(struct nf_conn *ct,
unsigned long statusbit;
enum nf_nat_manip_type mtype = HOOK2MANIP(hooknum);
if (mtype == IP_NAT_MANIP_SRC)
if (mtype == NF_NAT_MANIP_SRC)
statusbit = IPS_SRC_NAT;
else
statusbit = IPS_DST_NAT;
@ -447,7 +447,7 @@ int nf_nat_icmp_reply_translation(struct nf_conn *ct,
return 0;
}
if (manip == IP_NAT_MANIP_SRC)
if (manip == NF_NAT_MANIP_SRC)
statusbit = IPS_SRC_NAT;
else
statusbit = IPS_DST_NAT;
@ -602,7 +602,7 @@ static const struct nla_policy protonat_nla_policy[CTA_PROTONAT_MAX+1] = {
static int nfnetlink_parse_nat_proto(struct nlattr *attr,
const struct nf_conn *ct,
struct nf_nat_range *range)
struct nf_nat_ipv4_range *range)
{
struct nlattr *tb[CTA_PROTONAT_MAX+1];
const struct nf_nat_protocol *npt;
@ -626,7 +626,7 @@ static const struct nla_policy nat_nla_policy[CTA_NAT_MAX+1] = {
static int
nfnetlink_parse_nat(const struct nlattr *nat,
const struct nf_conn *ct, struct nf_nat_range *range)
const struct nf_conn *ct, struct nf_nat_ipv4_range *range)
{
struct nlattr *tb[CTA_NAT_MAX+1];
int err;
@ -646,7 +646,7 @@ nfnetlink_parse_nat(const struct nlattr *nat,
range->max_ip = nla_get_be32(tb[CTA_NAT_MAXIP]);
if (range->min_ip)
range->flags |= IP_NAT_RANGE_MAP_IPS;
range->flags |= NF_NAT_RANGE_MAP_IPS;
if (!tb[CTA_NAT_PROTO])
return 0;
@ -663,7 +663,7 @@ nfnetlink_parse_nat_setup(struct nf_conn *ct,
enum nf_nat_manip_type manip,
const struct nlattr *attr)
{
struct nf_nat_range range;
struct nf_nat_ipv4_range range;
if (nfnetlink_parse_nat(attr, ct, &range) < 0)
return -EINVAL;

20
net/ipv4/netfilter/nf_nat_h323.c
View File

@ -398,7 +398,7 @@ static int nat_h245(struct sk_buff *skb, struct nf_conn *ct,
static void ip_nat_q931_expect(struct nf_conn *new,
struct nf_conntrack_expect *this)
{
struct nf_nat_range range;
struct nf_nat_ipv4_range range;
if (this->tuple.src.u3.ip != 0) { /* Only accept calls from GK */
nf_nat_follow_master(new, this);
@ -409,16 +409,16 @@ static void ip_nat_q931_expect(struct nf_conn *new,
BUG_ON(new->status & IPS_NAT_DONE_MASK);
/* Change src to where master sends to */
range.flags = IP_NAT_RANGE_MAP_IPS;
range.flags = NF_NAT_RANGE_MAP_IPS;
range.min_ip = range.max_ip = new->tuplehash[!this->dir].tuple.src.u3.ip;
nf_nat_setup_info(new, &range, IP_NAT_MANIP_SRC);
nf_nat_setup_info(new, &range, NF_NAT_MANIP_SRC);
/* For DST manip, map port here to where it's expected. */
range.flags = (IP_NAT_RANGE_MAP_IPS | IP_NAT_RANGE_PROTO_SPECIFIED);
range.flags = (NF_NAT_RANGE_MAP_IPS | NF_NAT_RANGE_PROTO_SPECIFIED);
range.min = range.max = this->saved_proto;
range.min_ip = range.max_ip =
new->master->tuplehash[!this->dir].tuple.src.u3.ip;
nf_nat_setup_info(new, &range, IP_NAT_MANIP_DST);
nf_nat_setup_info(new, &range, NF_NAT_MANIP_DST);
}
/****************************************************************************/
@ -496,21 +496,21 @@ static int nat_q931(struct sk_buff *skb, struct nf_conn *ct,
static void ip_nat_callforwarding_expect(struct nf_conn *new,
struct nf_conntrack_expect *this)
{
struct nf_nat_range range;
struct nf_nat_ipv4_range range;
/* This must be a fresh one. */
BUG_ON(new->status & IPS_NAT_DONE_MASK);
/* Change src to where master sends to */
range.flags = IP_NAT_RANGE_MAP_IPS;
range.flags = NF_NAT_RANGE_MAP_IPS;
range.min_ip = range.max_ip = new->tuplehash[!this->dir].tuple.src.u3.ip;
nf_nat_setup_info(new, &range, IP_NAT_MANIP_SRC);
nf_nat_setup_info(new, &range, NF_NAT_MANIP_SRC);
/* For DST manip, map port here to where it's expected. */
range.flags = (IP_NAT_RANGE_MAP_IPS | IP_NAT_RANGE_PROTO_SPECIFIED);
range.flags = (NF_NAT_RANGE_MAP_IPS | NF_NAT_RANGE_PROTO_SPECIFIED);
range.min = range.max = this->saved_proto;
range.min_ip = range.max_ip = this->saved_ip;
nf_nat_setup_info(new, &range, IP_NAT_MANIP_DST);
nf_nat_setup_info(new, &range, NF_NAT_MANIP_DST);
}
/****************************************************************************/

10
net/ipv4/netfilter/nf_nat_helper.c
View File

@ -430,22 +430,22 @@ nf_nat_seq_adjust(struct sk_buff *skb,
void nf_nat_follow_master(struct nf_conn *ct,
struct nf_conntrack_expect *exp)
{
struct nf_nat_range range;
struct nf_nat_ipv4_range range;
/* This must be a fresh one. */
BUG_ON(ct->status & IPS_NAT_DONE_MASK);
/* Change src to where master sends to */
range.flags = IP_NAT_RANGE_MAP_IPS;
range.flags = NF_NAT_RANGE_MAP_IPS;
range.min_ip = range.max_ip
= ct->master->tuplehash[!exp->dir].tuple.dst.u3.ip;
nf_nat_setup_info(ct, &range, IP_NAT_MANIP_SRC);
nf_nat_setup_info(ct, &range, NF_NAT_MANIP_SRC);
/* For DST manip, map port here to where it's expected. */
range.flags = (IP_NAT_RANGE_MAP_IPS | IP_NAT_RANGE_PROTO_SPECIFIED);
range.flags = (NF_NAT_RANGE_MAP_IPS | NF_NAT_RANGE_PROTO_SPECIFIED);
range.min = range.max = exp->saved_proto;
range.min_ip = range.max_ip
= ct->master->tuplehash[!exp->dir].tuple.src.u3.ip;
nf_nat_setup_info(ct, &range, IP_NAT_MANIP_DST);
nf_nat_setup_info(ct, &range, NF_NAT_MANIP_DST);
}
EXPORT_SYMBOL(nf_nat_follow_master);

14
net/ipv4/netfilter/nf_nat_pptp.c
View File

@ -47,7 +47,7 @@ static void pptp_nat_expected(struct nf_conn *ct,
struct nf_conntrack_tuple t;
const struct nf_ct_pptp_master *ct_pptp_info;
const struct nf_nat_pptp *nat_pptp_info;
struct nf_nat_range range;
struct nf_nat_ipv4_range range;
ct_pptp_info = &nfct_help(master)->help.ct_pptp_info;
nat_pptp_info = &nfct_nat(master)->help.nat_pptp_info;
@ -88,24 +88,24 @@ static void pptp_nat_expected(struct nf_conn *ct,
BUG_ON(ct->status & IPS_NAT_DONE_MASK);
/* Change src to where master sends to */
range.flags = IP_NAT_RANGE_MAP_IPS;
range.flags = NF_NAT_RANGE_MAP_IPS;
range.min_ip = range.max_ip
= ct->master->tuplehash[!exp->dir].tuple.dst.u3.ip;
if (exp->dir == IP_CT_DIR_ORIGINAL) {
range.flags |= IP_NAT_RANGE_PROTO_SPECIFIED;
range.flags |= NF_NAT_RANGE_PROTO_SPECIFIED;
range.min = range.max = exp->saved_proto;
}
nf_nat_setup_info(ct, &range, IP_NAT_MANIP_SRC);
nf_nat_setup_info(ct, &range, NF_NAT_MANIP_SRC);
/* For DST manip, map port here to where it's expected. */
range.flags = IP_NAT_RANGE_MAP_IPS;
range.flags = NF_NAT_RANGE_MAP_IPS;
range.min_ip = range.max_ip
= ct->master->tuplehash[!exp->dir].tuple.src.u3.ip;
if (exp->dir == IP_CT_DIR_REPLY) {
range.flags |= IP_NAT_RANGE_PROTO_SPECIFIED;
range.flags |= NF_NAT_RANGE_PROTO_SPECIFIED;
range.min = range.max = exp->saved_proto;
}
nf_nat_setup_info(ct, &range, IP_NAT_MANIP_DST);
nf_nat_setup_info(ct, &range, NF_NAT_MANIP_DST);
}
/* outbound packets == from PNS to PAC */

24
net/ipv4/netfilter/nf_nat_proto_common.c
View File

@ -26,7 +26,7 @@ bool nf_nat_proto_in_range(const struct nf_conntrack_tuple *tuple,
{
__be16 port;
if (maniptype == IP_NAT_MANIP_SRC)
if (maniptype == NF_NAT_MANIP_SRC)
port = tuple->src.u.all;
else
port = tuple->dst.u.all;
@ -37,7 +37,7 @@ bool nf_nat_proto_in_range(const struct nf_conntrack_tuple *tuple,
EXPORT_SYMBOL_GPL(nf_nat_proto_in_range);
void nf_nat_proto_unique_tuple(struct nf_conntrack_tuple *tuple,
const struct nf_nat_range *range,
const struct nf_nat_ipv4_range *range,
enum nf_nat_manip_type maniptype,
const struct nf_conn *ct,
u_int16_t *rover)
@ -46,15 +46,15 @@ void nf_nat_proto_unique_tuple(struct nf_conntrack_tuple *tuple,
__be16 *portptr;
u_int16_t off;
if (maniptype == IP_NAT_MANIP_SRC)
if (maniptype == NF_NAT_MANIP_SRC)
portptr = &tuple->src.u.all;
else
portptr = &tuple->dst.u.all;
/* If no range specified... */
if (!(range->flags & IP_NAT_RANGE_PROTO_SPECIFIED)) {
if (!(range->flags & NF_NAT_RANGE_PROTO_SPECIFIED)) {
/* If it's dst rewrite, can't change port */
if (maniptype == IP_NAT_MANIP_DST)
if (maniptype == NF_NAT_MANIP_DST)
return;
if (ntohs(*portptr) < 1024) {
@ -75,9 +75,9 @@ void nf_nat_proto_unique_tuple(struct nf_conntrack_tuple *tuple,
range_size = ntohs(range->max.all) - min + 1;
}
if (range->flags & IP_NAT_RANGE_PROTO_RANDOM)
if (range->flags & NF_NAT_RANGE_PROTO_RANDOM)
off = secure_ipv4_port_ephemeral(tuple->src.u3.ip, tuple->dst.u3.ip,
maniptype == IP_NAT_MANIP_SRC
maniptype == NF_NAT_MANIP_SRC
? tuple->dst.u.all
: tuple->src.u.all);
else
@ -87,7 +87,7 @@ void nf_nat_proto_unique_tuple(struct nf_conntrack_tuple *tuple,
*portptr = htons(min + off % range_size);
if (++i != range_size && nf_nat_used_tuple(tuple, ct))
continue;
if (!(range->flags & IP_NAT_RANGE_PROTO_RANDOM))
if (!(range->flags & NF_NAT_RANGE_PROTO_RANDOM))
*rover = off;
return;
}
@ -97,7 +97,7 @@ EXPORT_SYMBOL_GPL(nf_nat_proto_unique_tuple);
#if defined(CONFIG_NF_CT_NETLINK) || defined(CONFIG_NF_CT_NETLINK_MODULE)
int nf_nat_proto_range_to_nlattr(struct sk_buff *skb,
const struct nf_nat_range *range)
const struct nf_nat_ipv4_range *range)
{
NLA_PUT_BE16(skb, CTA_PROTONAT_PORT_MIN, range->min.all);
NLA_PUT_BE16(skb, CTA_PROTONAT_PORT_MAX, range->max.all);
@ -109,16 +109,16 @@ nla_put_failure:
EXPORT_SYMBOL_GPL(nf_nat_proto_nlattr_to_range);
int nf_nat_proto_nlattr_to_range(struct nlattr *tb[],
struct nf_nat_range *range)
struct nf_nat_ipv4_range *range)
{
if (tb[CTA_PROTONAT_PORT_MIN]) {
range->min.all = nla_get_be16(tb[CTA_PROTONAT_PORT_MIN]);
range->max.all = range->min.tcp.port;
range->flags |= IP_NAT_RANGE_PROTO_SPECIFIED;
range->flags |= NF_NAT_RANGE_PROTO_SPECIFIED;
}
if (tb[CTA_PROTONAT_PORT_MAX]) {
range->max.all = nla_get_be16(tb[CTA_PROTONAT_PORT_MAX]);
range->flags |= IP_NAT_RANGE_PROTO_SPECIFIED;
range->flags |= NF_NAT_RANGE_PROTO_SPECIFIED;
}
return 0;
}

4
net/ipv4/netfilter/nf_nat_proto_dccp.c
View File

@ -24,7 +24,7 @@ static u_int16_t dccp_port_rover;
static void
dccp_unique_tuple(struct nf_conntrack_tuple *tuple,
const struct nf_nat_range *range,
const struct nf_nat_ipv4_range *range,
enum nf_nat_manip_type maniptype,
const struct nf_conn *ct)
{
@ -54,7 +54,7 @@ dccp_manip_pkt(struct sk_buff *skb,
iph = (struct iphdr *)(skb->data + iphdroff);
hdr = (struct dccp_hdr *)(skb->data + hdroff);
if (maniptype == IP_NAT_MANIP_SRC) {
if (maniptype == NF_NAT_MANIP_SRC) {
oldip = iph->saddr;
newip = tuple->src.u3.ip;
newport = tuple->src.u.dccp.port;

8
net/ipv4/netfilter/nf_nat_proto_gre.c
View File

@ -39,7 +39,7 @@ MODULE_DESCRIPTION("Netfilter NAT protocol helper module for GRE");
/* generate unique tuple ... */
static void
gre_unique_tuple(struct nf_conntrack_tuple *tuple,
const struct nf_nat_range *range,
const struct nf_nat_ipv4_range *range,
enum nf_nat_manip_type maniptype,
const struct nf_conn *ct)
{
@ -52,12 +52,12 @@ gre_unique_tuple(struct nf_conntrack_tuple *tuple,
if (!ct->master)
return;
if (maniptype == IP_NAT_MANIP_SRC)
if (maniptype == NF_NAT_MANIP_SRC)
keyptr = &tuple->src.u.gre.key;
else
keyptr = &tuple->dst.u.gre.key;
if (!(range->flags & IP_NAT_RANGE_PROTO_SPECIFIED)) {
if (!(range->flags & NF_NAT_RANGE_PROTO_SPECIFIED)) {
pr_debug("%p: NATing GRE PPTP\n", ct);
min = 1;
range_size = 0xffff;
@ -99,7 +99,7 @@ gre_manip_pkt(struct sk_buff *skb, unsigned int iphdroff,
/* we only have destination manip of a packet, since 'source key'
* is not present in the packet itself */
if (maniptype != IP_NAT_MANIP_DST)
if (maniptype != NF_NAT_MANIP_DST)
return true;
switch (greh->version) {
case GRE_VERSION_1701:

4
net/ipv4/netfilter/nf_nat_proto_icmp.c
View File

@ -30,7 +30,7 @@ icmp_in_range(const struct nf_conntrack_tuple *tuple,
static void
icmp_unique_tuple(struct nf_conntrack_tuple *tuple,
const struct nf_nat_range *range,
const struct nf_nat_ipv4_range *range,
enum nf_nat_manip_type maniptype,
const struct nf_conn *ct)
{
@ -40,7 +40,7 @@ icmp_unique_tuple(struct nf_conntrack_tuple *tuple,
range_size = ntohs(range->max.icmp.id) - ntohs(range->min.icmp.id) + 1;
/* If no range specified... */
if (!(range->flags & IP_NAT_RANGE_PROTO_SPECIFIED))
if (!(range->flags & NF_NAT_RANGE_PROTO_SPECIFIED))
range_size = 0xFFFF;
for (i = 0; ; ++id) {

4
net/ipv4/netfilter/nf_nat_proto_sctp.c
View File

@ -19,7 +19,7 @@ static u_int16_t nf_sctp_port_rover;
static void
sctp_unique_tuple(struct nf_conntrack_tuple *tuple,
const struct nf_nat_range *range,
const struct nf_nat_ipv4_range *range,
enum nf_nat_manip_type maniptype,
const struct nf_conn *ct)
{
@ -46,7 +46,7 @@ sctp_manip_pkt(struct sk_buff *skb,
iph = (struct iphdr *)(skb->data + iphdroff);
hdr = (struct sctphdr *)(skb->data + hdroff);
if (maniptype == IP_NAT_MANIP_SRC) {
if (maniptype == NF_NAT_MANIP_SRC) {
/* Get rid of src ip and src pt */
oldip = iph->saddr;
newip = tuple->src.u3.ip;

4
net/ipv4/netfilter/nf_nat_proto_tcp.c
View File

@ -23,7 +23,7 @@ static u_int16_t tcp_port_rover;
static void
tcp_unique_tuple(struct nf_conntrack_tuple *tuple,
const struct nf_nat_range *range,
const struct nf_nat_ipv4_range *range,
enum nf_nat_manip_type maniptype,
const struct nf_conn *ct)
{
@ -55,7 +55,7 @@ tcp_manip_pkt(struct sk_buff *skb,
iph = (struct iphdr *)(skb->data + iphdroff);
hdr = (struct tcphdr *)(skb->data + hdroff);
if (maniptype == IP_NAT_MANIP_SRC) {
if (maniptype == NF_NAT_MANIP_SRC) {
/* Get rid of src ip and src pt */
oldip = iph->saddr;
newip = tuple->src.u3.ip;

4
net/ipv4/netfilter/nf_nat_proto_udp.c
View File

@ -22,7 +22,7 @@ static u_int16_t udp_port_rover;
static void
udp_unique_tuple(struct nf_conntrack_tuple *tuple,
const struct nf_nat_range *range,
const struct nf_nat_ipv4_range *range,
enum nf_nat_manip_type maniptype,
const struct nf_conn *ct)
{
@ -47,7 +47,7 @@ udp_manip_pkt(struct sk_buff *skb,
iph = (struct iphdr *)(skb->data + iphdroff);
hdr = (struct udphdr *)(skb->data + hdroff);
if (maniptype == IP_NAT_MANIP_SRC) {
if (maniptype == NF_NAT_MANIP_SRC) {
/* Get rid of src ip and src pt */
oldip = iph->saddr;
newip = tuple->src.u3.ip;

4
net/ipv4/netfilter/nf_nat_proto_udplite.c
View File

@ -21,7 +21,7 @@ static u_int16_t udplite_port_rover;
static void
udplite_unique_tuple(struct nf_conntrack_tuple *tuple,
const struct nf_nat_range *range,
const struct nf_nat_ipv4_range *range,
enum nf_nat_manip_type maniptype,
const struct nf_conn *ct)
{
@ -47,7 +47,7 @@ udplite_manip_pkt(struct sk_buff *skb,
iph = (struct iphdr *)(skb->data + iphdroff);
hdr = (struct udphdr *)(skb->data + hdroff);
if (maniptype == IP_NAT_MANIP_SRC) {
if (maniptype == NF_NAT_MANIP_SRC) {
/* Get rid of src ip and src pt */
oldip = iph->saddr;
newip = tuple->src.u3.ip;

2
net/ipv4/netfilter/nf_nat_proto_unknown.c
View File

@ -27,7 +27,7 @@ static bool unknown_in_range(const struct nf_conntrack_tuple *tuple,
}
static void unknown_unique_tuple(struct nf_conntrack_tuple *tuple,
const struct nf_nat_range *range,
const struct nf_nat_ipv4_range *range,
enum nf_nat_manip_type maniptype,
const struct nf_conn *ct)
{

22
net/ipv4/netfilter/nf_nat_rule.c
View File

@ -44,7 +44,7 @@ ipt_snat_target(struct sk_buff *skb, const struct xt_action_param *par)
{
struct nf_conn *ct;
enum ip_conntrack_info ctinfo;
const struct nf_nat_multi_range_compat *mr = par->targinfo;
const struct nf_nat_ipv4_multi_range_compat *mr = par->targinfo;
NF_CT_ASSERT(par->hooknum == NF_INET_POST_ROUTING ||
par->hooknum == NF_INET_LOCAL_IN);
@ -56,7 +56,7 @@ ipt_snat_target(struct sk_buff *skb, const struct xt_action_param *par)
ctinfo == IP_CT_RELATED_REPLY));
NF_CT_ASSERT(par->out != NULL);
return nf_nat_setup_info(ct, &mr->range[0], IP_NAT_MANIP_SRC);
return nf_nat_setup_info(ct, &mr->range[0], NF_NAT_MANIP_SRC);
}
static unsigned int
@ -64,7 +64,7 @@ ipt_dnat_target(struct sk_buff *skb, const struct xt_action_param *par)
{
struct nf_conn *ct;
enum ip_conntrack_info ctinfo;
const struct nf_nat_multi_range_compat *mr = par->targinfo;
const struct nf_nat_ipv4_multi_range_compat *mr = par->targinfo;
NF_CT_ASSERT(par->hooknum == NF_INET_PRE_ROUTING ||
par->hooknum == NF_INET_LOCAL_OUT);
@ -74,12 +74,12 @@ ipt_dnat_target(struct sk_buff *skb, const struct xt_action_param *par)
/* Connection must be valid and new. */
NF_CT_ASSERT(ct && (ctinfo == IP_CT_NEW || ctinfo == IP_CT_RELATED));
return nf_nat_setup_info(ct, &mr->range[0], IP_NAT_MANIP_DST);
return nf_nat_setup_info(ct, &mr->range[0], NF_NAT_MANIP_DST);
}
static int ipt_snat_checkentry(const struct xt_tgchk_param *par)
{
const struct nf_nat_multi_range_compat *mr = par->targinfo;
const struct nf_nat_ipv4_multi_range_compat *mr = par->targinfo;
/* Must be a valid range */
if (mr->rangesize != 1) {
@ -91,7 +91,7 @@ static int ipt_snat_checkentry(const struct xt_tgchk_param *par)
static int ipt_dnat_checkentry(const struct xt_tgchk_param *par)
{
const struct nf_nat_multi_range_compat *mr = par->targinfo;
const struct nf_nat_ipv4_multi_range_compat *mr = par->targinfo;
/* Must be a valid range */
if (mr->rangesize != 1) {
@ -105,13 +105,13 @@ static unsigned int
alloc_null_binding(struct nf_conn *ct, unsigned int hooknum)
{
/* Force range to this IP; let proto decide mapping for
per-proto parts (hence not IP_NAT_RANGE_PROTO_SPECIFIED).
per-proto parts (hence not NF_NAT_RANGE_PROTO_SPECIFIED).
*/
struct nf_nat_range range;
struct nf_nat_ipv4_range range;
range.flags = 0;
pr_debug("Allocating NULL binding for %p (%pI4)\n", ct,
HOOK2MANIP(hooknum) == IP_NAT_MANIP_SRC ?
HOOK2MANIP(hooknum) == NF_NAT_MANIP_SRC ?
&ct->tuplehash[IP_CT_DIR_REPLY].tuple.dst.u3.ip :
&ct->tuplehash[IP_CT_DIR_REPLY].tuple.src.u3.ip);
@ -140,7 +140,7 @@ int nf_nat_rule_find(struct sk_buff *skb,
static struct xt_target ipt_snat_reg __read_mostly = {
.name = "SNAT",
.target = ipt_snat_target,
.targetsize = sizeof(struct nf_nat_multi_range_compat),
.targetsize = sizeof(struct nf_nat_ipv4_multi_range_compat),
.table = "nat",
.hooks = (1 << NF_INET_POST_ROUTING) | (1 << NF_INET_LOCAL_IN),
.checkentry = ipt_snat_checkentry,
@ -150,7 +150,7 @@ static struct xt_target ipt_snat_reg __read_mostly = {
static struct xt_target ipt_dnat_reg __read_mostly = {
.name = "DNAT",
.target = ipt_dnat_target,
.targetsize = sizeof(struct nf_nat_multi_range_compat),
.targetsize = sizeof(struct nf_nat_ipv4_multi_range_compat),
.table = "nat",
.hooks = (1 << NF_INET_PRE_ROUTING) | (1 << NF_INET_LOCAL_OUT),
.checkentry = ipt_dnat_checkentry,

10
net/ipv4/netfilter/nf_nat_sip.c
View File

@ -249,25 +249,25 @@ static void ip_nat_sip_seq_adjust(struct sk_buff *skb, s16 off)
static void ip_nat_sip_expected(struct nf_conn *ct,
struct nf_conntrack_expect *exp)
{
struct nf_nat_range range;
struct nf_nat_ipv4_range range;
/* This must be a fresh one. */
BUG_ON(ct->status & IPS_NAT_DONE_MASK);
/* For DST manip, map port here to where it's expected. */
range.flags = (IP_NAT_RANGE_MAP_IPS | IP_NAT_RANGE_PROTO_SPECIFIED);
range.flags = (NF_NAT_RANGE_MAP_IPS | NF_NAT_RANGE_PROTO_SPECIFIED);
range.min = range.max = exp->saved_proto;
range.min_ip = range.max_ip = exp->saved_ip;
nf_nat_setup_info(ct, &range, IP_NAT_MANIP_DST);
nf_nat_setup_info(ct, &range, NF_NAT_MANIP_DST);
/* Change src to where master sends to, but only if the connection
* actually came from the same source. */
if (ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.u3.ip ==
ct->master->tuplehash[exp->dir].tuple.src.u3.ip) {
range.flags = IP_NAT_RANGE_MAP_IPS;
range.flags = NF_NAT_RANGE_MAP_IPS;
range.min_ip = range.max_ip
= ct->master->tuplehash[!exp->dir].tuple.dst.u3.ip;
nf_nat_setup_info(ct, &range, IP_NAT_MANIP_SRC);
nf_nat_setup_info(ct, &range, NF_NAT_MANIP_SRC);
}
}

2
net/ipv4/netfilter/nf_nat_standalone.c
View File

@ -137,7 +137,7 @@ nf_nat_fn(unsigned int hooknum,
return ret;
} else
pr_debug("Already setup manip %s for ct %p\n",
maniptype == IP_NAT_MANIP_SRC ? "SRC" : "DST",
maniptype == NF_NAT_MANIP_SRC ? "SRC" : "DST",
ct);
break;

4
net/netfilter/nf_conntrack_netlink.c
View File

@ -1102,14 +1102,14 @@ ctnetlink_change_nat(struct nf_conn *ct, const struct nlattr * const cda[])
if (cda[CTA_NAT_DST]) {
ret = ctnetlink_parse_nat_setup(ct,
IP_NAT_MANIP_DST,
NF_NAT_MANIP_DST,
cda[CTA_NAT_DST]);
if (ret < 0)
return ret;
}
if (cda[CTA_NAT_SRC]) {
ret = ctnetlink_parse_nat_setup(ct,
IP_NAT_MANIP_SRC,
NF_NAT_MANIP_SRC,
cda[CTA_NAT_SRC]);
if (ret < 0)
return ret;