* [PATCH 1/6] extensions: convert NAT target to use nf_nat.h
2011-11-23 16:12 [PATCH 0/6] extensions: IPv6 NAT extensions kaber
@ 2011-11-23 16:12 ` kaber
2011-11-23 16:12 ` [PATCH 2/6] extensions: add IPv6 MASQUERADE extension kaber
` (5 subsequent siblings)
6 siblings, 0 replies; 10+ messages in thread
From: kaber @ 2011-11-23 16:12 UTC (permalink / raw)
To: netfilter-devel; +Cc: kaber, ulrich.weber
From: Patrick McHardy <kaber@trash.net>
Convert the NAT targets to use the kernel supplied nf_nat.h header.
Signed-off-by: Patrick McHardy <kaber@trash.net>
---
extensions/libipt_DNAT.c | 36 +++---
extensions/libipt_MASQUERADE.c | 32 +++---
extensions/libipt_NETMAP.c | 18 ++--
extensions/libipt_REDIRECT.c | 34 +++---
extensions/libipt_SAME.c | 18 ++--
extensions/libipt_SNAT.c | 36 +++---
.../linux/netfilter/nf_conntrack_tuple_common.h | 27 +++++
include/linux/netfilter/nf_nat.h | 25 +++++
include/linux/netfilter_ipv4/ipt_SAME.h | 2 +-
include/net/netfilter/nf_conntrack_tuple.h | 114 --------------------
include/net/netfilter/nf_nat.h | 55 ----------
11 files changed, 140 insertions(+), 257 deletions(-)
create mode 100644 include/linux/netfilter/nf_nat.h
delete mode 100644 include/net/netfilter/nf_conntrack_tuple.h
delete mode 100644 include/net/netfilter/nf_nat.h
diff --git a/extensions/libipt_DNAT.c b/extensions/libipt_DNAT.c
index 3b55c69..6d2662d 100644
--- a/extensions/libipt_DNAT.c
+++ b/extensions/libipt_DNAT.c
@@ -6,7 +6,7 @@
#include <iptables.h> /* get_kernel_version */
#include <limits.h> /* INT_MAX in ip_tables.h */
#include <linux/netfilter_ipv4/ip_tables.h>
-#include <net/netfilter/nf_nat.h>
+#include <linux/netfilter/nf_nat.h>
enum {
O_TO_DEST = 0,
@@ -23,7 +23,7 @@ enum {
struct ipt_natinfo
{
struct xt_entry_target t;
- struct nf_nat_multi_range mr;
+ struct nf_nat_ipv4_multi_range_compat mr;
};
static void DNAT_help(void)
@@ -44,7 +44,7 @@ static const struct xt_option_entry DNAT_opts[] = {
};
static struct ipt_natinfo *
-append_range(struct ipt_natinfo *info, const struct nf_nat_range *range)
+append_range(struct ipt_natinfo *info, const struct nf_nat_ipv4_range *range)
{
unsigned int size;
@@ -66,7 +66,7 @@ append_range(struct ipt_natinfo *info, const struct nf_nat_range *range)
static struct xt_entry_target *
parse_to(const char *orig_arg, int portok, struct ipt_natinfo *info)
{
- struct nf_nat_range range;
+ struct nf_nat_ipv4_range range;
char *arg, *colon, *dash, *error;
const struct in_addr *ip;
@@ -83,7 +83,7 @@ parse_to(const char *orig_arg, int portok, struct ipt_natinfo *info)
xtables_error(PARAMETER_PROBLEM,
"Need TCP, UDP, SCTP or DCCP with port specification");
- range.flags |= IP_NAT_RANGE_PROTO_SPECIFIED;
+ range.flags |= NF_NAT_RANGE_PROTO_SPECIFIED;
port = atoi(colon+1);
if (port <= 0 || port > 65535)
@@ -122,7 +122,7 @@ parse_to(const char *orig_arg, int portok, struct ipt_natinfo *info)
*colon = '\0';
}
- range.flags |= IP_NAT_RANGE_MAP_IPS;
+ range.flags |= NF_NAT_RANGE_MAP_IPS;
dash = strchr(arg, '-');
if (colon && dash && dash > colon)
dash = NULL;
@@ -176,22 +176,22 @@ static void DNAT_parse(struct xt_option_call *cb)
*cb->target = parse_to(cb->arg, portok, info);
/* WTF do we need this for?? */
if (cb->xflags & F_RANDOM)
- info->mr.range[0].flags |= IP_NAT_RANGE_PROTO_RANDOM;
+ info->mr.range[0].flags |= NF_NAT_RANGE_PROTO_RANDOM;
cb->xflags |= F_X_TO_DEST;
break;
case O_RANDOM:
if (cb->xflags & F_TO_DEST)
- info->mr.range[0].flags |= IP_NAT_RANGE_PROTO_RANDOM;
+ info->mr.range[0].flags |= NF_NAT_RANGE_PROTO_RANDOM;
break;
case O_PERSISTENT:
- info->mr.range[0].flags |= IP_NAT_RANGE_PERSISTENT;
+ info->mr.range[0].flags |= NF_NAT_RANGE_PERSISTENT;
break;
}
}
-static void print_range(const struct nf_nat_range *r)
+static void print_range(const struct nf_nat_ipv4_range *r)
{
- if (r->flags & IP_NAT_RANGE_MAP_IPS) {
+ if (r->flags & NF_NAT_RANGE_MAP_IPS) {
struct in_addr a;
a.s_addr = r->min_ip;
@@ -201,7 +201,7 @@ static void print_range(const struct nf_nat_range *r)
printf("-%s", xtables_ipaddr_to_numeric(&a));
}
}
- if (r->flags & IP_NAT_RANGE_PROTO_SPECIFIED) {
+ if (r->flags & NF_NAT_RANGE_PROTO_SPECIFIED) {
printf(":");
printf("%hu", ntohs(r->min.tcp.port));
if (r->max.tcp.port != r->min.tcp.port)
@@ -218,9 +218,9 @@ static void DNAT_print(const void *ip, const struct xt_entry_target *target,
printf(" to:");
for (i = 0; i < info->mr.rangesize; i++) {
print_range(&info->mr.range[i]);
- if (info->mr.range[i].flags & IP_NAT_RANGE_PROTO_RANDOM)
+ if (info->mr.range[i].flags & NF_NAT_RANGE_PROTO_RANDOM)
printf(" random");
- if (info->mr.range[i].flags & IP_NAT_RANGE_PERSISTENT)
+ if (info->mr.range[i].flags & NF_NAT_RANGE_PERSISTENT)
printf(" persistent");
}
}
@@ -233,9 +233,9 @@ static void DNAT_save(const void *ip, const struct xt_entry_target *target)
for (i = 0; i < info->mr.rangesize; i++) {
printf(" --to-destination ");
print_range(&info->mr.range[i]);
- if (info->mr.range[i].flags & IP_NAT_RANGE_PROTO_RANDOM)
+ if (info->mr.range[i].flags & NF_NAT_RANGE_PROTO_RANDOM)
printf(" --random");
- if (info->mr.range[i].flags & IP_NAT_RANGE_PERSISTENT)
+ if (info->mr.range[i].flags & NF_NAT_RANGE_PERSISTENT)
printf(" --persistent");
}
}
@@ -244,8 +244,8 @@ static struct xtables_target dnat_tg_reg = {
.name = "DNAT",
.version = XTABLES_VERSION,
.family = NFPROTO_IPV4,
- .size = XT_ALIGN(sizeof(struct nf_nat_multi_range)),
- .userspacesize = XT_ALIGN(sizeof(struct nf_nat_multi_range)),
+ .size = XT_ALIGN(sizeof(struct nf_nat_ipv4_multi_range_compat)),
+ .userspacesize = XT_ALIGN(sizeof(struct nf_nat_ipv4_multi_range_compat)),
.help = DNAT_help,
.x6_parse = DNAT_parse,
.print = DNAT_print,
diff --git a/extensions/libipt_MASQUERADE.c b/extensions/libipt_MASQUERADE.c
index 7ba42df..ea07445 100644
--- a/extensions/libipt_MASQUERADE.c
+++ b/extensions/libipt_MASQUERADE.c
@@ -6,7 +6,7 @@
#include <xtables.h>
#include <limits.h> /* INT_MAX in ip_tables.h */
#include <linux/netfilter_ipv4/ip_tables.h>
-#include <net/netfilter/nf_nat.h>
+#include <linux/netfilter/nf_nat.h>
enum {
O_TO_PORTS = 0,
@@ -31,7 +31,7 @@ static const struct xt_option_entry MASQUERADE_opts[] = {
static void MASQUERADE_init(struct xt_entry_target *t)
{
- struct nf_nat_multi_range *mr = (struct nf_nat_multi_range *)t->data;
+ struct nf_nat_ipv4_multi_range_compat *mr = (struct nf_nat_ipv4_multi_range_compat *)t->data;
/* Actually, it's 0, but it's ignored at the moment. */
mr->rangesize = 1;
@@ -39,12 +39,12 @@ static void MASQUERADE_init(struct xt_entry_target *t)
/* Parses ports */
static void
-parse_ports(const char *arg, struct nf_nat_multi_range *mr)
+parse_ports(const char *arg, struct nf_nat_ipv4_multi_range_compat *mr)
{
char *end;
unsigned int port, maxport;
- mr->range[0].flags |= IP_NAT_RANGE_PROTO_SPECIFIED;
+ mr->range[0].flags |= NF_NAT_RANGE_PROTO_SPECIFIED;
if (!xtables_strtoui(arg, &end, &port, 0, UINT16_MAX))
xtables_param_act(XTF_BAD_VALUE, "MASQUERADE", "--to-ports", arg);
@@ -75,7 +75,7 @@ static void MASQUERADE_parse(struct xt_option_call *cb)
{
const struct ipt_entry *entry = cb->xt_entry;
int portok;
- struct nf_nat_multi_range *mr = cb->data;
+ struct nf_nat_ipv4_multi_range_compat *mr = cb->data;
if (entry->ip.proto == IPPROTO_TCP
|| entry->ip.proto == IPPROTO_UDP
@@ -95,7 +95,7 @@ static void MASQUERADE_parse(struct xt_option_call *cb)
parse_ports(cb->arg, mr);
break;
case O_RANDOM:
- mr->range[0].flags |= IP_NAT_RANGE_PROTO_RANDOM;
+ mr->range[0].flags |= NF_NAT_RANGE_PROTO_RANDOM;
break;
}
}
@@ -104,33 +104,33 @@ static void
MASQUERADE_print(const void *ip, const struct xt_entry_target *target,
int numeric)
{
- const struct nf_nat_multi_range *mr = (const void *)target->data;
- const struct nf_nat_range *r = &mr->range[0];
+ const struct nf_nat_ipv4_multi_range_compat *mr = (const void *)target->data;
+ const struct nf_nat_ipv4_range *r = &mr->range[0];
- if (r->flags & IP_NAT_RANGE_PROTO_SPECIFIED) {
+ if (r->flags & NF_NAT_RANGE_PROTO_SPECIFIED) {
printf(" masq ports: ");
printf("%hu", ntohs(r->min.tcp.port));
if (r->max.tcp.port != r->min.tcp.port)
printf("-%hu", ntohs(r->max.tcp.port));
}
- if (r->flags & IP_NAT_RANGE_PROTO_RANDOM)
+ if (r->flags & NF_NAT_RANGE_PROTO_RANDOM)
printf(" random");
}
static void
MASQUERADE_save(const void *ip, const struct xt_entry_target *target)
{
- const struct nf_nat_multi_range *mr = (const void *)target->data;
- const struct nf_nat_range *r = &mr->range[0];
+ const struct nf_nat_ipv4_multi_range_compat *mr = (const void *)target->data;
+ const struct nf_nat_ipv4_range *r = &mr->range[0];
- if (r->flags & IP_NAT_RANGE_PROTO_SPECIFIED) {
+ if (r->flags & NF_NAT_RANGE_PROTO_SPECIFIED) {
printf(" --to-ports %hu", ntohs(r->min.tcp.port));
if (r->max.tcp.port != r->min.tcp.port)
printf("-%hu", ntohs(r->max.tcp.port));
}
- if (r->flags & IP_NAT_RANGE_PROTO_RANDOM)
+ if (r->flags & NF_NAT_RANGE_PROTO_RANDOM)
printf(" --random");
}
@@ -138,8 +138,8 @@ static struct xtables_target masquerade_tg_reg = {
.name = "MASQUERADE",
.version = XTABLES_VERSION,
.family = NFPROTO_IPV4,
- .size = XT_ALIGN(sizeof(struct nf_nat_multi_range)),
- .userspacesize = XT_ALIGN(sizeof(struct nf_nat_multi_range)),
+ .size = XT_ALIGN(sizeof(struct nf_nat_ipv4_multi_range_compat)),
+ .userspacesize = XT_ALIGN(sizeof(struct nf_nat_ipv4_multi_range_compat)),
.help = MASQUERADE_help,
.init = MASQUERADE_init,
.x6_parse = MASQUERADE_parse,
diff --git a/extensions/libipt_NETMAP.c b/extensions/libipt_NETMAP.c
index 5c4471a..dee7b01 100644
--- a/extensions/libipt_NETMAP.c
+++ b/extensions/libipt_NETMAP.c
@@ -7,7 +7,7 @@
#include <stdlib.h>
#include <getopt.h>
#include <xtables.h>
-#include <net/netfilter/nf_nat.h>
+#include <linux/netfilter/nf_nat.h>
#define MODULENAME "NETMAP"
@@ -45,7 +45,7 @@ netmask2bits(uint32_t netmask)
static void NETMAP_init(struct xt_entry_target *t)
{
- struct nf_nat_multi_range *mr = (struct nf_nat_multi_range *)t->data;
+ struct nf_nat_ipv4_multi_range_compat *mr = (struct nf_nat_ipv4_multi_range_compat *)t->data;
/* Actually, it's 0, but it's ignored at the moment. */
mr->rangesize = 1;
@@ -53,11 +53,11 @@ static void NETMAP_init(struct xt_entry_target *t)
static void NETMAP_parse(struct xt_option_call *cb)
{
- struct nf_nat_multi_range *mr = cb->data;
- struct nf_nat_range *range = &mr->range[0];
+ struct nf_nat_ipv4_multi_range_compat *mr = cb->data;
+ struct nf_nat_ipv4_range *range = &mr->range[0];
xtables_option_parse(cb);
- range->flags |= IP_NAT_RANGE_MAP_IPS;
+ range->flags |= NF_NAT_RANGE_MAP_IPS;
range->min_ip = cb->val.haddr.ip & cb->val.hmask.ip;
range->max_ip = range->min_ip | ~cb->val.hmask.ip;
}
@@ -65,8 +65,8 @@ static void NETMAP_parse(struct xt_option_call *cb)
static void NETMAP_print(const void *ip, const struct xt_entry_target *target,
int numeric)
{
- const struct nf_nat_multi_range *mr = (const void *)target->data;
- const struct nf_nat_range *r = &mr->range[0];
+ const struct nf_nat_ipv4_multi_range_compat *mr = (const void *)target->data;
+ const struct nf_nat_ipv4_range *r = &mr->range[0];
struct in_addr a;
int bits;
@@ -90,8 +90,8 @@ static struct xtables_target netmap_tg_reg = {
.name = MODULENAME,
.version = XTABLES_VERSION,
.family = NFPROTO_IPV4,
- .size = XT_ALIGN(sizeof(struct nf_nat_multi_range)),
- .userspacesize = XT_ALIGN(sizeof(struct nf_nat_multi_range)),
+ .size = XT_ALIGN(sizeof(struct nf_nat_ipv4_multi_range_compat)),
+ .userspacesize = XT_ALIGN(sizeof(struct nf_nat_ipv4_multi_range_compat)),
.help = NETMAP_help,
.init = NETMAP_init,
.x6_parse = NETMAP_parse,
diff --git a/extensions/libipt_REDIRECT.c b/extensions/libipt_REDIRECT.c
index e67360a..610a949 100644
--- a/extensions/libipt_REDIRECT.c
+++ b/extensions/libipt_REDIRECT.c
@@ -4,7 +4,7 @@
#include <xtables.h>
#include <limits.h> /* INT_MAX in ip_tables.h */
#include <linux/netfilter_ipv4/ip_tables.h>
-#include <net/netfilter/nf_nat.h>
+#include <linux/netfilter/nf_nat.h>
enum {
O_TO_PORTS = 0,
@@ -30,7 +30,7 @@ static const struct xt_option_entry REDIRECT_opts[] = {
static void REDIRECT_init(struct xt_entry_target *t)
{
- struct nf_nat_multi_range *mr = (struct nf_nat_multi_range *)t->data;
+ struct nf_nat_ipv4_multi_range_compat *mr = (struct nf_nat_ipv4_multi_range_compat *)t->data;
/* Actually, it's 0, but it's ignored at the moment. */
mr->rangesize = 1;
@@ -38,12 +38,12 @@ static void REDIRECT_init(struct xt_entry_target *t)
/* Parses ports */
static void
-parse_ports(const char *arg, struct nf_nat_multi_range *mr)
+parse_ports(const char *arg, struct nf_nat_ipv4_multi_range_compat *mr)
{
char *end = "";
unsigned int port, maxport;
- mr->range[0].flags |= IP_NAT_RANGE_PROTO_SPECIFIED;
+ mr->range[0].flags |= NF_NAT_RANGE_PROTO_SPECIFIED;
if (!xtables_strtoui(arg, &end, &port, 0, UINT16_MAX) &&
(port = xtables_service_to_port(arg, NULL)) == (unsigned)-1)
@@ -75,7 +75,7 @@ parse_ports(const char *arg, struct nf_nat_multi_range *mr)
static void REDIRECT_parse(struct xt_option_call *cb)
{
const struct ipt_entry *entry = cb->xt_entry;
- struct nf_nat_multi_range *mr = (void *)(*cb->target)->data;
+ struct nf_nat_ipv4_multi_range_compat *mr = (void *)(*cb->target)->data;
int portok;
if (entry->ip.proto == IPPROTO_TCP
@@ -95,11 +95,11 @@ static void REDIRECT_parse(struct xt_option_call *cb)
"Need TCP, UDP, SCTP or DCCP with port specification");
parse_ports(cb->arg, mr);
if (cb->xflags & F_RANDOM)
- mr->range[0].flags |= IP_NAT_RANGE_PROTO_RANDOM;
+ mr->range[0].flags |= NF_NAT_RANGE_PROTO_RANDOM;
break;
case O_RANDOM:
if (cb->xflags & F_TO_PORTS)
- mr->range[0].flags |= IP_NAT_RANGE_PROTO_RANDOM;
+ mr->range[0].flags |= NF_NAT_RANGE_PROTO_RANDOM;
break;
}
}
@@ -107,30 +107,30 @@ static void REDIRECT_parse(struct xt_option_call *cb)
static void REDIRECT_print(const void *ip, const struct xt_entry_target *target,
int numeric)
{
- const struct nf_nat_multi_range *mr = (const void *)target->data;
- const struct nf_nat_range *r = &mr->range[0];
+ const struct nf_nat_ipv4_multi_range_compat *mr = (const void *)target->data;
+ const struct nf_nat_ipv4_range *r = &mr->range[0];
- if (r->flags & IP_NAT_RANGE_PROTO_SPECIFIED) {
+ if (r->flags & NF_NAT_RANGE_PROTO_SPECIFIED) {
printf(" redir ports ");
printf("%hu", ntohs(r->min.tcp.port));
if (r->max.tcp.port != r->min.tcp.port)
printf("-%hu", ntohs(r->max.tcp.port));
- if (mr->range[0].flags & IP_NAT_RANGE_PROTO_RANDOM)
+ if (mr->range[0].flags & NF_NAT_RANGE_PROTO_RANDOM)
printf(" random");
}
}
static void REDIRECT_save(const void *ip, const struct xt_entry_target *target)
{
- const struct nf_nat_multi_range *mr = (const void *)target->data;
- const struct nf_nat_range *r = &mr->range[0];
+ const struct nf_nat_ipv4_multi_range_compat *mr = (const void *)target->data;
+ const struct nf_nat_ipv4_range *r = &mr->range[0];
- if (r->flags & IP_NAT_RANGE_PROTO_SPECIFIED) {
+ if (r->flags & NF_NAT_RANGE_PROTO_SPECIFIED) {
printf(" --to-ports ");
printf("%hu", ntohs(r->min.tcp.port));
if (r->max.tcp.port != r->min.tcp.port)
printf("-%hu", ntohs(r->max.tcp.port));
- if (mr->range[0].flags & IP_NAT_RANGE_PROTO_RANDOM)
+ if (mr->range[0].flags & NF_NAT_RANGE_PROTO_RANDOM)
printf(" --random");
}
}
@@ -139,8 +139,8 @@ static struct xtables_target redirect_tg_reg = {
.name = "REDIRECT",
.version = XTABLES_VERSION,
.family = NFPROTO_IPV4,
- .size = XT_ALIGN(sizeof(struct nf_nat_multi_range)),
- .userspacesize = XT_ALIGN(sizeof(struct nf_nat_multi_range)),
+ .size = XT_ALIGN(sizeof(struct nf_nat_ipv4_multi_range_compat)),
+ .userspacesize = XT_ALIGN(sizeof(struct nf_nat_ipv4_multi_range_compat)),
.help = REDIRECT_help,
.init = REDIRECT_init,
.x6_parse = REDIRECT_parse,
diff --git a/extensions/libipt_SAME.c b/extensions/libipt_SAME.c
index 2ff6c82..251844e 100644
--- a/extensions/libipt_SAME.c
+++ b/extensions/libipt_SAME.c
@@ -2,7 +2,7 @@
#include <string.h>
#include <stdlib.h>
#include <xtables.h>
-#include <net/netfilter/nf_nat.h>
+#include <linux/netfilter/nf_nat.h>
#include <linux/netfilter_ipv4/ipt_SAME.h>
enum {
@@ -36,7 +36,7 @@ static const struct xt_option_entry SAME_opts[] = {
};
/* Parses range of IPs */
-static void parse_to(const char *orig_arg, struct nf_nat_range *range)
+static void parse_to(const char *orig_arg, struct nf_nat_ipv4_range *range)
{
char *dash, *arg;
const struct in_addr *ip;
@@ -44,7 +44,7 @@ static void parse_to(const char *orig_arg, struct nf_nat_range *range)
arg = strdup(orig_arg);
if (arg == NULL)
xtables_error(RESOURCE_PROBLEM, "strdup");
- range->flags |= IP_NAT_RANGE_MAP_IPS;
+ range->flags |= NF_NAT_RANGE_MAP_IPS;
dash = strchr(arg, '-');
if (dash)
@@ -87,7 +87,7 @@ static void SAME_parse(struct xt_option_call *cb)
/* WTF do we need this for? */
if (cb->xflags & F_RANDOM)
mr->range[mr->rangesize].flags
- |= IP_NAT_RANGE_PROTO_RANDOM;
+ |= NF_NAT_RANGE_PROTO_RANDOM;
mr->rangesize++;
break;
case O_NODST:
@@ -95,7 +95,7 @@ static void SAME_parse(struct xt_option_call *cb)
break;
case O_RANDOM:
for (count=0; count < mr->rangesize; count++)
- mr->range[count].flags |= IP_NAT_RANGE_PROTO_RANDOM;
+ mr->range[count].flags |= NF_NAT_RANGE_PROTO_RANDOM;
break;
}
}
@@ -110,7 +110,7 @@ static void SAME_print(const void *ip, const struct xt_entry_target *target,
printf(" same:");
for (count = 0; count < mr->rangesize; count++) {
- const struct nf_nat_range *r = &mr->range[count];
+ const struct nf_nat_ipv4_range *r = &mr->range[count];
struct in_addr a;
a.s_addr = r->min_ip;
@@ -120,7 +120,7 @@ static void SAME_print(const void *ip, const struct xt_entry_target *target,
if (r->min_ip != r->max_ip)
printf("-%s", xtables_ipaddr_to_numeric(&a));
- if (r->flags & IP_NAT_RANGE_PROTO_RANDOM)
+ if (r->flags & NF_NAT_RANGE_PROTO_RANDOM)
random_selection = 1;
}
@@ -138,7 +138,7 @@ static void SAME_save(const void *ip, const struct xt_entry_target *target)
int random_selection = 0;
for (count = 0; count < mr->rangesize; count++) {
- const struct nf_nat_range *r = &mr->range[count];
+ const struct nf_nat_ipv4_range *r = &mr->range[count];
struct in_addr a;
a.s_addr = r->min_ip;
@@ -147,7 +147,7 @@ static void SAME_save(const void *ip, const struct xt_entry_target *target)
if (r->min_ip != r->max_ip)
printf("-%s", xtables_ipaddr_to_numeric(&a));
- if (r->flags & IP_NAT_RANGE_PROTO_RANDOM)
+ if (r->flags & NF_NAT_RANGE_PROTO_RANDOM)
random_selection = 1;
}
diff --git a/extensions/libipt_SNAT.c b/extensions/libipt_SNAT.c
index 8023306..e92557d 100644
--- a/extensions/libipt_SNAT.c
+++ b/extensions/libipt_SNAT.c
@@ -6,7 +6,7 @@
#include <iptables.h>
#include <limits.h> /* INT_MAX in ip_tables.h */
#include <linux/netfilter_ipv4/ip_tables.h>
-#include <net/netfilter/nf_nat.h>
+#include <linux/netfilter/nf_nat.h>
enum {
O_TO_SRC = 0,
@@ -23,7 +23,7 @@ enum {
struct ipt_natinfo
{
struct xt_entry_target t;
- struct nf_nat_multi_range mr;
+ struct nf_nat_ipv4_multi_range_compat mr;
};
static void SNAT_help(void)
@@ -44,7 +44,7 @@ static const struct xt_option_entry SNAT_opts[] = {
};
static struct ipt_natinfo *
-append_range(struct ipt_natinfo *info, const struct nf_nat_range *range)
+append_range(struct ipt_natinfo *info, const struct nf_nat_ipv4_range *range)
{
unsigned int size;
@@ -66,7 +66,7 @@ append_range(struct ipt_natinfo *info, const struct nf_nat_range *range)
static struct xt_entry_target *
parse_to(const char *orig_arg, int portok, struct ipt_natinfo *info)
{
- struct nf_nat_range range;
+ struct nf_nat_ipv4_range range;
char *arg, *colon, *dash, *error;
const struct in_addr *ip;
@@ -83,7 +83,7 @@ parse_to(const char *orig_arg, int portok, struct ipt_natinfo *info)
xtables_error(PARAMETER_PROBLEM,
"Need TCP, UDP, SCTP or DCCP with port specification");
- range.flags |= IP_NAT_RANGE_PROTO_SPECIFIED;
+ range.flags |= NF_NAT_RANGE_PROTO_SPECIFIED;
port = atoi(colon+1);
if (port <= 0 || port > 65535)
@@ -122,7 +122,7 @@ parse_to(const char *orig_arg, int portok, struct ipt_natinfo *info)
*colon = '\0';
}
- range.flags |= IP_NAT_RANGE_MAP_IPS;
+ range.flags |= NF_NAT_RANGE_MAP_IPS;
dash = strchr(arg, '-');
if (colon && dash && dash > colon)
dash = NULL;
@@ -176,22 +176,22 @@ static void SNAT_parse(struct xt_option_call *cb)
*cb->target = parse_to(cb->arg, portok, info);
/* WTF do we need this for?? */
if (cb->xflags & F_RANDOM)
- info->mr.range[0].flags |= IP_NAT_RANGE_PROTO_RANDOM;
+ info->mr.range[0].flags |= NF_NAT_RANGE_PROTO_RANDOM;
cb->xflags |= F_X_TO_SRC;
break;
case O_RANDOM:
if (cb->xflags & F_TO_SRC)
- info->mr.range[0].flags |= IP_NAT_RANGE_PROTO_RANDOM;
+ info->mr.range[0].flags |= NF_NAT_RANGE_PROTO_RANDOM;
break;
case O_PERSISTENT:
- info->mr.range[0].flags |= IP_NAT_RANGE_PERSISTENT;
+ info->mr.range[0].flags |= NF_NAT_RANGE_PERSISTENT;
break;
}
}
-static void print_range(const struct nf_nat_range *r)
+static void print_range(const struct nf_nat_ipv4_range *r)
{
- if (r->flags & IP_NAT_RANGE_MAP_IPS) {
+ if (r->flags & NF_NAT_RANGE_MAP_IPS) {
struct in_addr a;
a.s_addr = r->min_ip;
@@ -201,7 +201,7 @@ static void print_range(const struct nf_nat_range *r)
printf("-%s", xtables_ipaddr_to_numeric(&a));
}
}
- if (r->flags & IP_NAT_RANGE_PROTO_SPECIFIED) {
+ if (r->flags & NF_NAT_RANGE_PROTO_SPECIFIED) {
printf(":");
printf("%hu", ntohs(r->min.tcp.port));
if (r->max.tcp.port != r->min.tcp.port)
@@ -218,9 +218,9 @@ static void SNAT_print(const void *ip, const struct xt_entry_target *target,
printf(" to:");
for (i = 0; i < info->mr.rangesize; i++) {
print_range(&info->mr.range[i]);
- if (info->mr.range[i].flags & IP_NAT_RANGE_PROTO_RANDOM)
+ if (info->mr.range[i].flags & NF_NAT_RANGE_PROTO_RANDOM)
printf(" random");
- if (info->mr.range[i].flags & IP_NAT_RANGE_PERSISTENT)
+ if (info->mr.range[i].flags & NF_NAT_RANGE_PERSISTENT)
printf(" persistent");
}
}
@@ -233,9 +233,9 @@ static void SNAT_save(const void *ip, const struct xt_entry_target *target)
for (i = 0; i < info->mr.rangesize; i++) {
printf(" --to-source ");
print_range(&info->mr.range[i]);
- if (info->mr.range[i].flags & IP_NAT_RANGE_PROTO_RANDOM)
+ if (info->mr.range[i].flags & NF_NAT_RANGE_PROTO_RANDOM)
printf(" --random");
- if (info->mr.range[i].flags & IP_NAT_RANGE_PERSISTENT)
+ if (info->mr.range[i].flags & NF_NAT_RANGE_PERSISTENT)
printf(" --persistent");
}
}
@@ -244,8 +244,8 @@ static struct xtables_target snat_tg_reg = {
.name = "SNAT",
.version = XTABLES_VERSION,
.family = NFPROTO_IPV4,
- .size = XT_ALIGN(sizeof(struct nf_nat_multi_range)),
- .userspacesize = XT_ALIGN(sizeof(struct nf_nat_multi_range)),
+ .size = XT_ALIGN(sizeof(struct nf_nat_ipv4_multi_range_compat)),
+ .userspacesize = XT_ALIGN(sizeof(struct nf_nat_ipv4_multi_range_compat)),
.help = SNAT_help,
.x6_parse = SNAT_parse,
.print = SNAT_print,
diff --git a/include/linux/netfilter/nf_conntrack_tuple_common.h b/include/linux/netfilter/nf_conntrack_tuple_common.h
index 2ea22b0..2f6bbc5 100644
--- a/include/linux/netfilter/nf_conntrack_tuple_common.h
+++ b/include/linux/netfilter/nf_conntrack_tuple_common.h
@@ -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 */
diff --git a/include/linux/netfilter/nf_nat.h b/include/linux/netfilter/nf_nat.h
new file mode 100644
index 0000000..8df2d13
--- /dev/null
+++ b/include/linux/netfilter/nf_nat.h
@@ -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 */
diff --git a/include/linux/netfilter_ipv4/ipt_SAME.h b/include/linux/netfilter_ipv4/ipt_SAME.h
index 5bca782..a855167 100644
--- a/include/linux/netfilter_ipv4/ipt_SAME.h
+++ b/include/linux/netfilter_ipv4/ipt_SAME.h
@@ -14,7 +14,7 @@ struct ipt_same_info {
__u32 *iparray;
/* hangs off end. */
- struct nf_nat_range range[IPT_SAME_MAX_RANGE];
+ struct nf_nat_ipv4_range range[IPT_SAME_MAX_RANGE];
};
#endif /*_IPT_SAME_H*/
diff --git a/include/net/netfilter/nf_conntrack_tuple.h b/include/net/netfilter/nf_conntrack_tuple.h
deleted file mode 100644
index c40e0b4..0000000
--- a/include/net/netfilter/nf_conntrack_tuple.h
+++ /dev/null
@@ -1,114 +0,0 @@
-/* This file was manually copied from the Linux kernel source
- * and manually stripped from __KERNEL__ sections and unused functions.
- */
-
-/*
- * Definitions and Declarations for tuple.
- *
- * 16 Dec 2003: Yasuyuki Kozakai @USAGI <yasuyuki.kozakai@toshiba.co.jp>
- * - generalize L3 protocol dependent part.
- *
- * Derived from include/linux/netfiter_ipv4/ip_conntrack_tuple.h
- */
-
-#ifndef _NF_CONNTRACK_TUPLE_H
-#define _NF_CONNTRACK_TUPLE_H
-
-#include <linux/netfilter/x_tables.h>
-#include <linux/netfilter/nf_conntrack_tuple_common.h>
-
-/* A `tuple' is a structure containing the information to uniquely
- identify a connection. ie. if two packets have the same tuple, they
- are in the same connection; if not, they are not.
-
- We divide the structure along "manipulatable" and
- "non-manipulatable" lines, for the benefit of the NAT code.
-*/
-
-#define NF_CT_TUPLE_L3SIZE ARRAY_SIZE(((union nf_inet_addr *)NULL)->all)
-
-/* 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;
-};
-
-/* The manipulable part of the tuple. */
-struct nf_conntrack_man
-{
- union nf_inet_addr u3;
- union nf_conntrack_man_proto u;
- /* Layer 3 protocol */
- u_int16_t l3num;
-};
-
-/* This contains the information to distinguish a connection. */
-struct nf_conntrack_tuple
-{
- struct nf_conntrack_man src;
-
- /* These are the parts of the tuple which are fixed. */
- struct {
- union nf_inet_addr u3;
- union {
- /* Add other protocols here. */
- __be16 all;
-
- struct {
- __be16 port;
- } tcp;
- struct {
- __be16 port;
- } udp;
- struct {
- u_int8_t type, code;
- } icmp;
- struct {
- __be16 port;
- } dccp;
- struct {
- __be16 port;
- } sctp;
- struct {
- __be16 key;
- } gre;
- } u;
-
- /* The protocol. */
- u_int8_t protonum;
-
- /* The direction (for tuplehash) */
- u_int8_t dir;
- } dst;
-};
-
-struct nf_conntrack_tuple_mask
-{
- struct {
- union nf_inet_addr u3;
- union nf_conntrack_man_proto u;
- } src;
-};
-
-#endif /* _NF_CONNTRACK_TUPLE_H */
diff --git a/include/net/netfilter/nf_nat.h b/include/net/netfilter/nf_nat.h
deleted file mode 100644
index c3e2060..0000000
--- a/include/net/netfilter/nf_nat.h
+++ /dev/null
@@ -1,55 +0,0 @@
-#ifndef _NF_NAT_H
-#define _NF_NAT_H
-#include <linux/netfilter_ipv4.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
-};
-
-/* SRC manip occurs POST_ROUTING or LOCAL_IN */
-#define HOOK2MANIP(hooknum) ((hooknum) != NF_INET_POST_ROUTING && \
- (hooknum) != NF_INET_LOCAL_IN)
-
-#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
-
-/* NAT sequence number modifications */
-struct nf_nat_seq {
- /* position of the last TCP sequence number modification (if any) */
- u_int32_t correction_pos;
-
- /* sequence number offset before and after last modification */
- int16_t offset_before, offset_after;
-};
-
-/* 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
--
1.7.1
^ permalink raw reply related [flat|nested] 10+ messages in thread* [PATCH 2/6] extensions: add IPv6 MASQUERADE extension
2011-11-23 16:12 [PATCH 0/6] extensions: IPv6 NAT extensions kaber
2011-11-23 16:12 ` [PATCH 1/6] extensions: convert NAT target to use nf_nat.h kaber
@ 2011-11-23 16:12 ` kaber
2011-11-23 16:12 ` [PATCH 3/6] extensions: add IPv6 SNAT extension kaber
` (4 subsequent siblings)
6 siblings, 0 replies; 10+ messages in thread
From: kaber @ 2011-11-23 16:12 UTC (permalink / raw)
To: netfilter-devel; +Cc: kaber, ulrich.weber
From: Patrick McHardy <kaber@trash.net>
Signed-off-by: Patrick McHardy <kaber@trash.net>
---
extensions/libip6t_MASQUERADE.c | 150 ++++++++++++++++++++++++++++++++++++++
include/linux/netfilter/nf_nat.h | 8 ++
2 files changed, 158 insertions(+), 0 deletions(-)
create mode 100644 extensions/libip6t_MASQUERADE.c
diff --git a/extensions/libip6t_MASQUERADE.c b/extensions/libip6t_MASQUERADE.c
new file mode 100644
index 0000000..eb9213e
--- /dev/null
+++ b/extensions/libip6t_MASQUERADE.c
@@ -0,0 +1,150 @@
+/*
+ * Copyright (c) 2011 Patrick McHardy <kaber@trash.net>
+ *
+ * Based on Rusty Russell's IPv4 MASQUERADE target. Development of IPv6 NAT
+ * funded by Astaro.
+ */
+
+#include <stdio.h>
+#include <netdb.h>
+#include <string.h>
+#include <stdlib.h>
+#include <getopt.h>
+#include <xtables.h>
+#include <limits.h> /* INT_MAX in ip_tables.h */
+#include <linux/netfilter_ipv6/ip6_tables.h>
+#include <linux/netfilter/nf_nat.h>
+
+enum {
+ O_TO_PORTS = 0,
+ O_RANDOM,
+};
+
+static void MASQUERADE_help(void)
+{
+ printf(
+"MASQUERADE target options:\n"
+" --to-ports <port>[-<port>]\n"
+" Port (range) to map to.\n"
+" --random\n"
+" Randomize source port.\n");
+}
+
+static const struct xt_option_entry MASQUERADE_opts[] = {
+ {.name = "to-ports", .id = O_TO_PORTS, .type = XTTYPE_STRING},
+ {.name = "random", .id = O_RANDOM, .type = XTTYPE_NONE},
+ XTOPT_TABLEEND,
+};
+
+/* Parses ports */
+static void
+parse_ports(const char *arg, struct nf_nat_range *r)
+{
+ char *end;
+ unsigned int port, maxport;
+
+ r->flags |= NF_NAT_RANGE_PROTO_SPECIFIED;
+
+ if (!xtables_strtoui(arg, &end, &port, 0, UINT16_MAX))
+ xtables_param_act(XTF_BAD_VALUE, "MASQUERADE", "--to-ports", arg);
+
+ switch (*end) {
+ case '\0':
+ r->min_proto.tcp.port
+ = r->max_proto.tcp.port
+ = htons(port);
+ return;
+ case '-':
+ if (!xtables_strtoui(end + 1, NULL, &maxport, 0, UINT16_MAX))
+ break;
+
+ if (maxport < port)
+ break;
+
+ r->min_proto.tcp.port = htons(port);
+ r->max_proto.tcp.port = htons(maxport);
+ return;
+ default:
+ break;
+ }
+ xtables_param_act(XTF_BAD_VALUE, "MASQUERADE", "--to-ports", arg);
+}
+
+static void MASQUERADE_parse(struct xt_option_call *cb)
+{
+ const struct ip6t_entry *entry = cb->xt_entry;
+ struct nf_nat_range *r = cb->data;
+ int portok;
+
+ if (entry->ipv6.proto == IPPROTO_TCP ||
+ entry->ipv6.proto == IPPROTO_UDP ||
+ entry->ipv6.proto == IPPROTO_SCTP ||
+ entry->ipv6.proto == IPPROTO_DCCP ||
+ entry->ipv6.proto == IPPROTO_ICMP)
+ portok = 1;
+ else
+ portok = 0;
+
+ xtables_option_parse(cb);
+ switch (cb->entry->id) {
+ case O_TO_PORTS:
+ if (!portok)
+ xtables_error(PARAMETER_PROBLEM,
+ "Need TCP, UDP, SCTP or DCCP with port specification");
+ parse_ports(cb->arg, r);
+ break;
+ case O_RANDOM:
+ r->flags |= NF_NAT_RANGE_PROTO_RANDOM;
+ break;
+ }
+}
+
+static void
+MASQUERADE_print(const void *ip, const struct xt_entry_target *target,
+ int numeric)
+{
+ const struct nf_nat_range *r = (const void *)target->data;
+
+ if (r->flags & NF_NAT_RANGE_PROTO_SPECIFIED) {
+ printf(" masq ports: ");
+ printf("%hu", ntohs(r->min_proto.tcp.port));
+ if (r->max_proto.tcp.port != r->min_proto.tcp.port)
+ printf("-%hu", ntohs(r->max_proto.tcp.port));
+ }
+
+ if (r->flags & NF_NAT_RANGE_PROTO_RANDOM)
+ printf(" random");
+}
+
+static void
+MASQUERADE_save(const void *ip, const struct xt_entry_target *target)
+{
+ const struct nf_nat_range *r = (const void *)target->data;
+
+ if (r->flags & NF_NAT_RANGE_PROTO_SPECIFIED) {
+ printf(" --to-ports %hu", ntohs(r->min_proto.tcp.port));
+ if (r->max_proto.tcp.port != r->min_proto.tcp.port)
+ printf("-%hu", ntohs(r->max_proto.tcp.port));
+ }
+
+ if (r->flags & NF_NAT_RANGE_PROTO_RANDOM)
+ printf(" --random");
+}
+
+static struct xtables_target masquerade_tg_reg = {
+ .name = "MASQUERADE",
+ .version = XTABLES_VERSION,
+ .family = NFPROTO_IPV6,
+ .size = XT_ALIGN(sizeof(struct nf_nat_range)),
+ .userspacesize = XT_ALIGN(sizeof(struct nf_nat_range)),
+ .help = MASQUERADE_help,
+ .x6_parse = MASQUERADE_parse,
+ .print = MASQUERADE_print,
+ .save = MASQUERADE_save,
+ .x6_options = MASQUERADE_opts,
+};
+
+void _init(void)
+{
+ xtables_register_target(&masquerade_tg_reg);
+}
diff --git a/include/linux/netfilter/nf_nat.h b/include/linux/netfilter/nf_nat.h
index 8df2d13..bf0cc37 100644
--- a/include/linux/netfilter/nf_nat.h
+++ b/include/linux/netfilter/nf_nat.h
@@ -22,4 +22,12 @@ struct nf_nat_ipv4_multi_range_compat {
struct nf_nat_ipv4_range range[1];
};
+struct nf_nat_range {
+ unsigned int flags;
+ union nf_inet_addr min_addr;
+ union nf_inet_addr max_addr;
+ union nf_conntrack_man_proto min_proto;
+ union nf_conntrack_man_proto max_proto;
+};
+
#endif /* _NETFILTER_NF_NAT_H */
--
1.7.1
^ permalink raw reply related [flat|nested] 10+ messages in thread* [PATCH 3/6] extensions: add IPv6 SNAT extension
2011-11-23 16:12 [PATCH 0/6] extensions: IPv6 NAT extensions kaber
2011-11-23 16:12 ` [PATCH 1/6] extensions: convert NAT target to use nf_nat.h kaber
2011-11-23 16:12 ` [PATCH 2/6] extensions: add IPv6 MASQUERADE extension kaber
@ 2011-11-23 16:12 ` kaber
2011-11-23 16:12 ` [PATCH 4/6] extensions: add IPv6 DNAT target kaber
` (3 subsequent siblings)
6 siblings, 0 replies; 10+ messages in thread
From: kaber @ 2011-11-23 16:12 UTC (permalink / raw)
To: netfilter-devel; +Cc: kaber, ulrich.weber
From: Patrick McHardy <kaber@trash.net>
Signed-off-by: Patrick McHardy <kaber@trash.net>
---
extensions/libip6t_SNAT.c | 245 +++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 245 insertions(+), 0 deletions(-)
create mode 100644 extensions/libip6t_SNAT.c
diff --git a/extensions/libip6t_SNAT.c b/extensions/libip6t_SNAT.c
new file mode 100644
index 0000000..f1c56d7
--- /dev/null
+++ b/extensions/libip6t_SNAT.c
@@ -0,0 +1,245 @@
+/*
+ * Copyright (c) 2011 Patrick McHardy <kaber@trash.net>
+ *
+ * Based on Rusty Russell's IPv4 SNAT target. Development of IPv6 NAT
+ * funded by Astaro.
+ */
+
+#include <stdio.h>
+#include <netdb.h>
+#include <string.h>
+#include <stdlib.h>
+#include <xtables.h>
+#include <iptables.h>
+#include <limits.h> /* INT_MAX in ip_tables.h */
+#include <linux/netfilter_ipv6/ip6_tables.h>
+#include <linux/netfilter/nf_nat.h>
+
+enum {
+ O_TO_SRC = 0,
+ O_RANDOM,
+ O_PERSISTENT,
+ O_X_TO_SRC,
+ F_TO_SRC = 1 << O_TO_SRC,
+ F_RANDOM = 1 << O_RANDOM,
+ F_X_TO_SRC = 1 << O_X_TO_SRC,
+};
+
+static void SNAT_help(void)
+{
+ printf(
+"SNAT target options:\n"
+" --to-source [<ipaddr>[-<ipaddr>]][:port[-port]]\n"
+" Address to map source to.\n"
+"[--random] [--persistent]\n");
+}
+
+static const struct xt_option_entry SNAT_opts[] = {
+ {.name = "to-source", .id = O_TO_SRC, .type = XTTYPE_STRING,
+ .flags = XTOPT_MAND | XTOPT_MULTI},
+ {.name = "random", .id = O_RANDOM, .type = XTTYPE_NONE},
+ {.name = "persistent", .id = O_PERSISTENT, .type = XTTYPE_NONE},
+ XTOPT_TABLEEND,
+};
+
+/* Ranges expected in network order. */
+static void
+parse_to(const char *orig_arg, int portok, struct nf_nat_range *range)
+{
+ char *arg, *start, *end = NULL, *colon = NULL, *dash, *error;
+ const struct in6_addr *ip;
+
+ arg = strdup(orig_arg);
+ if (arg == NULL)
+ xtables_error(RESOURCE_PROBLEM, "strdup");
+
+ start = strchr(arg, '[');
+ if (start == NULL)
+ start = arg;
+ else {
+ start++;
+ end = strchr(start, ']');
+ if (end == NULL)
+ xtables_error(PARAMETER_PROBLEM,
+ "Invalid address format");
+
+ *end = '\0';
+ colon = strchr(end + 1, ':');
+ }
+
+ if (colon) {
+ int port;
+
+ if (!portok)
+ xtables_error(PARAMETER_PROBLEM,
+ "Need TCP, UDP, SCTP or DCCP with port specification");
+
+ range->flags |= NF_NAT_RANGE_PROTO_SPECIFIED;
+
+ port = atoi(colon+1);
+ if (port <= 0 || port > 65535)
+ xtables_error(PARAMETER_PROBLEM,
+ "Port `%s' not valid\n", colon+1);
+
+ error = strchr(colon+1, ':');
+ if (error)
+ xtables_error(PARAMETER_PROBLEM,
+ "Invalid port:port syntax - use dash\n");
+
+ dash = strchr(colon, '-');
+ if (!dash) {
+ range->min_proto.tcp.port
+ = range->max_proto.tcp.port
+ = htons(port);
+ } else {
+ int maxport;
+
+ maxport = atoi(dash + 1);
+ if (maxport <= 0 || maxport > 65535)
+ xtables_error(PARAMETER_PROBLEM,
+ "Port `%s' not valid\n", dash+1);
+ if (maxport < port)
+ /* People are stupid. */
+ xtables_error(PARAMETER_PROBLEM,
+ "Port range `%s' funky\n", colon+1);
+ range->min_proto.tcp.port = htons(port);
+ range->max_proto.tcp.port = htons(maxport);
+ }
+ /* Starts with a colon? No IP info...*/
+ if (colon == arg) {
+ free(arg);
+ return;
+ }
+ *colon = '\0';
+ }
+
+ range->flags |= NF_NAT_RANGE_MAP_IPS;
+ dash = strchr(start, '-');
+ if (colon && dash && dash > colon)
+ dash = NULL;
+
+ if (dash)
+ *dash = '\0';
+
+ ip = xtables_numeric_to_ip6addr(start);
+ if (!ip)
+ xtables_error(PARAMETER_PROBLEM, "Bad IP address \"%s\"\n",
+ start);
+ range->min_addr.in6 = *ip;
+ if (dash) {
+ ip = xtables_numeric_to_ip6addr(dash + 1);
+ if (!ip)
+ xtables_error(PARAMETER_PROBLEM, "Bad IP address \"%s\"\n",
+ dash+1);
+ range->max_addr.in6 = *ip;
+ } else
+ range->max_addr = range->min_addr;
+
+ free(arg);
+ return;
+}
+
+static void SNAT_parse(struct xt_option_call *cb)
+{
+ const struct ip6t_entry *entry = cb->xt_entry;
+ struct nf_nat_range *range = cb->data;
+ int portok;
+
+ if (entry->ipv6.proto == IPPROTO_TCP ||
+ entry->ipv6.proto == IPPROTO_UDP ||
+ entry->ipv6.proto == IPPROTO_SCTP ||
+ entry->ipv6.proto == IPPROTO_DCCP ||
+ entry->ipv6.proto == IPPROTO_ICMP)
+ portok = 1;
+ else
+ portok = 0;
+
+ xtables_option_parse(cb);
+ switch (cb->entry->id) {
+ case O_TO_SRC:
+ if (cb->xflags & F_X_TO_SRC) {
+ if (!kernel_version)
+ get_kernel_version();
+ if (kernel_version > LINUX_VERSION(2, 6, 10))
+ xtables_error(PARAMETER_PROBLEM,
+ "SNAT: Multiple --to-source not supported");
+ }
+ parse_to(cb->arg, portok, range);
+ /* WTF do we need this for?? */
+ if (cb->xflags & F_RANDOM)
+ range->flags |= NF_NAT_RANGE_PROTO_RANDOM;
+ cb->xflags |= F_X_TO_SRC;
+ break;
+ case O_RANDOM:
+ if (cb->xflags & F_TO_SRC)
+ range->flags |= NF_NAT_RANGE_PROTO_RANDOM;
+ break;
+ case O_PERSISTENT:
+ range->flags |= NF_NAT_RANGE_PERSISTENT;
+ break;
+ }
+}
+
+static void print_range(const struct nf_nat_range *range)
+{
+ if (range->flags & NF_NAT_RANGE_MAP_IPS) {
+ if (range->flags & NF_NAT_RANGE_PROTO_SPECIFIED)
+ printf("[");
+ printf("%s", xtables_ip6addr_to_numeric(&range->min_addr.in6));
+ if (memcmp(&range->min_addr, &range->max_addr,
+ sizeof(range->min_addr)))
+ printf("-%s", xtables_ip6addr_to_numeric(&range->max_addr.in6));
+ if (range->flags & NF_NAT_RANGE_PROTO_SPECIFIED)
+ printf("]");
+ }
+ if (range->flags & NF_NAT_RANGE_PROTO_SPECIFIED) {
+ printf(":");
+ printf("%hu", ntohs(range->min_proto.tcp.port));
+ if (range->max_proto.tcp.port != range->min_proto.tcp.port)
+ printf("-%hu", ntohs(range->max_proto.tcp.port));
+ }
+}
+
+static void SNAT_print(const void *ip, const struct xt_entry_target *target,
+ int numeric)
+{
+ const struct nf_nat_range *range = (const void *)target->data;
+
+ printf(" to:");
+ print_range(range);
+ if (range->flags & NF_NAT_RANGE_PROTO_RANDOM)
+ printf(" random");
+ if (range->flags & NF_NAT_RANGE_PERSISTENT)
+ printf(" persistent");
+}
+
+static void SNAT_save(const void *ip, const struct xt_entry_target *target)
+{
+ const struct nf_nat_range *range = (const void *)target->data;
+
+ printf(" --to-source ");
+ print_range(range);
+ if (range->flags & NF_NAT_RANGE_PROTO_RANDOM)
+ printf(" --random");
+ if (range->flags & NF_NAT_RANGE_PERSISTENT)
+ printf(" --persistent");
+}
+
+static struct xtables_target snat_tg_reg = {
+ .name = "SNAT",
+ .version = XTABLES_VERSION,
+ .family = NFPROTO_IPV6,
+ .revision = 1,
+ .size = XT_ALIGN(sizeof(struct nf_nat_range)),
+ .userspacesize = XT_ALIGN(sizeof(struct nf_nat_range)),
+ .help = SNAT_help,
+ .x6_parse = SNAT_parse,
+ .print = SNAT_print,
+ .save = SNAT_save,
+ .x6_options = SNAT_opts,
+};
+
+void _init(void)
+{
+ xtables_register_target(&snat_tg_reg);
+}
--
1.7.1
^ permalink raw reply related [flat|nested] 10+ messages in thread* [PATCH 4/6] extensions: add IPv6 DNAT target
2011-11-23 16:12 [PATCH 0/6] extensions: IPv6 NAT extensions kaber
` (2 preceding siblings ...)
2011-11-23 16:12 ` [PATCH 3/6] extensions: add IPv6 SNAT extension kaber
@ 2011-11-23 16:12 ` kaber
2011-11-23 16:12 ` [PATCH 5/6] extensions: add IPv6 REDIRECT extension kaber
` (2 subsequent siblings)
6 siblings, 0 replies; 10+ messages in thread
From: kaber @ 2011-11-23 16:12 UTC (permalink / raw)
To: netfilter-devel; +Cc: kaber, ulrich.weber
From: Patrick McHardy <kaber@trash.net>
Signed-off-by: Patrick McHardy <kaber@trash.net>
---
extensions/libip6t_DNAT.c | 245 +++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 245 insertions(+), 0 deletions(-)
create mode 100644 extensions/libip6t_DNAT.c
diff --git a/extensions/libip6t_DNAT.c b/extensions/libip6t_DNAT.c
new file mode 100644
index 0000000..47c129a
--- /dev/null
+++ b/extensions/libip6t_DNAT.c
@@ -0,0 +1,245 @@
+/*
+ * Copyright (c) 2011 Patrick McHardy <kaber@trash.net>
+ *
+ * Based on Rusty Russell's IPv4 DNAT target. Development of IPv6 NAT
+ * funded by Astaro.
+ */
+
+#include <stdio.h>
+#include <netdb.h>
+#include <string.h>
+#include <stdlib.h>
+#include <xtables.h>
+#include <iptables.h>
+#include <limits.h> /* INT_MAX in ip_tables.h */
+#include <linux/netfilter_ipv6/ip6_tables.h>
+#include <linux/netfilter/nf_nat.h>
+
+enum {
+ O_TO_DEST = 0,
+ O_RANDOM,
+ O_PERSISTENT,
+ O_X_TO_DEST,
+ F_TO_DEST = 1 << O_TO_DEST,
+ F_RANDOM = 1 << O_RANDOM,
+ F_X_TO_DEST = 1 << O_X_TO_DEST,
+};
+
+static void DNAT_help(void)
+{
+ printf(
+"DNAT target options:\n"
+" --to-source [<ipaddr>[-<ipaddr>]][:port[-port]]\n"
+" Address to map source to.\n"
+"[--random] [--persistent]\n");
+}
+
+static const struct xt_option_entry DNAT_opts[] = {
+ {.name = "to-source", .id = O_TO_DEST, .type = XTTYPE_STRING,
+ .flags = XTOPT_MAND | XTOPT_MULTI},
+ {.name = "random", .id = O_RANDOM, .type = XTTYPE_NONE},
+ {.name = "persistent", .id = O_PERSISTENT, .type = XTTYPE_NONE},
+ XTOPT_TABLEEND,
+};
+
+/* Ranges expected in network order. */
+static void
+parse_to(const char *orig_arg, int portok, struct nf_nat_range *range)
+{
+ char *arg, *start, *end = NULL, *colon = NULL, *dash, *error;
+ const struct in6_addr *ip;
+
+ arg = strdup(orig_arg);
+ if (arg == NULL)
+ xtables_error(RESOURCE_PROBLEM, "strdup");
+
+ start = strchr(arg, '[');
+ if (start == NULL)
+ start = arg;
+ else {
+ start++;
+ end = strchr(start, ']');
+ if (end == NULL)
+ xtables_error(PARAMETER_PROBLEM,
+ "Invalid address format");
+
+ *end = '\0';
+ colon = strchr(end + 1, ':');
+ }
+
+ if (colon) {
+ int port;
+
+ if (!portok)
+ xtables_error(PARAMETER_PROBLEM,
+ "Need TCP, UDP, SCTP or DCCP with port specification");
+
+ range->flags |= NF_NAT_RANGE_PROTO_SPECIFIED;
+
+ port = atoi(colon+1);
+ if (port <= 0 || port > 65535)
+ xtables_error(PARAMETER_PROBLEM,
+ "Port `%s' not valid\n", colon+1);
+
+ error = strchr(colon+1, ':');
+ if (error)
+ xtables_error(PARAMETER_PROBLEM,
+ "Invalid port:port syntax - use dash\n");
+
+ dash = strchr(colon, '-');
+ if (!dash) {
+ range->min_proto.tcp.port
+ = range->max_proto.tcp.port
+ = htons(port);
+ } else {
+ int maxport;
+
+ maxport = atoi(dash + 1);
+ if (maxport <= 0 || maxport > 65535)
+ xtables_error(PARAMETER_PROBLEM,
+ "Port `%s' not valid\n", dash+1);
+ if (maxport < port)
+ /* People are stupid. */
+ xtables_error(PARAMETER_PROBLEM,
+ "Port range `%s' funky\n", colon+1);
+ range->min_proto.tcp.port = htons(port);
+ range->max_proto.tcp.port = htons(maxport);
+ }
+ /* Starts with a colon? No IP info...*/
+ if (colon == arg) {
+ free(arg);
+ return;
+ }
+ *colon = '\0';
+ }
+
+ range->flags |= NF_NAT_RANGE_MAP_IPS;
+ dash = strchr(start, '-');
+ if (colon && dash && dash > colon)
+ dash = NULL;
+
+ if (dash)
+ *dash = '\0';
+
+ ip = xtables_numeric_to_ip6addr(start);
+ if (!ip)
+ xtables_error(PARAMETER_PROBLEM, "Bad IP address \"%s\"\n",
+ start);
+ range->min_addr.in6 = *ip;
+ if (dash) {
+ ip = xtables_numeric_to_ip6addr(dash + 1);
+ if (!ip)
+ xtables_error(PARAMETER_PROBLEM, "Bad IP address \"%s\"\n",
+ dash+1);
+ range->max_addr.in6 = *ip;
+ } else
+ range->max_addr = range->min_addr;
+
+ free(arg);
+ return;
+}
+
+static void DNAT_parse(struct xt_option_call *cb)
+{
+ const struct ip6t_entry *entry = cb->xt_entry;
+ struct nf_nat_range *range = cb->data;
+ int portok;
+
+ if (entry->ipv6.proto == IPPROTO_TCP ||
+ entry->ipv6.proto == IPPROTO_UDP ||
+ entry->ipv6.proto == IPPROTO_SCTP ||
+ entry->ipv6.proto == IPPROTO_DCCP ||
+ entry->ipv6.proto == IPPROTO_ICMP)
+ portok = 1;
+ else
+ portok = 0;
+
+ xtables_option_parse(cb);
+ switch (cb->entry->id) {
+ case O_TO_DEST:
+ if (cb->xflags & F_X_TO_DEST) {
+ if (!kernel_version)
+ get_kernel_version();
+ if (kernel_version > LINUX_VERSION(2, 6, 10))
+ xtables_error(PARAMETER_PROBLEM,
+ "DNAT: Multiple --to-source not supported");
+ }
+ parse_to(cb->arg, portok, range);
+ /* WTF do we need this for?? */
+ if (cb->xflags & F_RANDOM)
+ range->flags |= NF_NAT_RANGE_PROTO_RANDOM;
+ cb->xflags |= F_X_TO_DEST;
+ break;
+ case O_RANDOM:
+ if (cb->xflags & F_TO_DEST)
+ range->flags |= NF_NAT_RANGE_PROTO_RANDOM;
+ break;
+ case O_PERSISTENT:
+ range->flags |= NF_NAT_RANGE_PERSISTENT;
+ break;
+ }
+}
+
+static void print_range(const struct nf_nat_range *range)
+{
+ if (range->flags & NF_NAT_RANGE_MAP_IPS) {
+ if (range->flags & NF_NAT_RANGE_PROTO_SPECIFIED)
+ printf("[");
+ printf("%s", xtables_ip6addr_to_numeric(&range->min_addr.in6));
+ if (memcmp(&range->min_addr, &range->max_addr,
+ sizeof(range->min_addr)))
+ printf("-%s", xtables_ip6addr_to_numeric(&range->max_addr.in6));
+ if (range->flags & NF_NAT_RANGE_PROTO_SPECIFIED)
+ printf("]");
+ }
+ if (range->flags & NF_NAT_RANGE_PROTO_SPECIFIED) {
+ printf(":");
+ printf("%hu", ntohs(range->min_proto.tcp.port));
+ if (range->max_proto.tcp.port != range->min_proto.tcp.port)
+ printf("-%hu", ntohs(range->max_proto.tcp.port));
+ }
+}
+
+static void DNAT_print(const void *ip, const struct xt_entry_target *target,
+ int numeric)
+{
+ const struct nf_nat_range *range = (const void *)target->data;
+
+ printf(" to:");
+ print_range(range);
+ if (range->flags & NF_NAT_RANGE_PROTO_RANDOM)
+ printf(" random");
+ if (range->flags & NF_NAT_RANGE_PERSISTENT)
+ printf(" persistent");
+}
+
+static void DNAT_save(const void *ip, const struct xt_entry_target *target)
+{
+ const struct nf_nat_range *range = (const void *)target->data;
+
+ printf(" --to-source ");
+ print_range(range);
+ if (range->flags & NF_NAT_RANGE_PROTO_RANDOM)
+ printf(" --random");
+ if (range->flags & NF_NAT_RANGE_PERSISTENT)
+ printf(" --persistent");
+}
+
+static struct xtables_target snat_tg_reg = {
+ .name = "DNAT",
+ .version = XTABLES_VERSION,
+ .family = NFPROTO_IPV6,
+ .revision = 1,
+ .size = XT_ALIGN(sizeof(struct nf_nat_range)),
+ .userspacesize = XT_ALIGN(sizeof(struct nf_nat_range)),
+ .help = DNAT_help,
+ .x6_parse = DNAT_parse,
+ .print = DNAT_print,
+ .save = DNAT_save,
+ .x6_options = DNAT_opts,
+};
+
+void _init(void)
+{
+ xtables_register_target(&snat_tg_reg);
+}
--
1.7.1
^ permalink raw reply related [flat|nested] 10+ messages in thread* [PATCH 5/6] extensions: add IPv6 REDIRECT extension
2011-11-23 16:12 [PATCH 0/6] extensions: IPv6 NAT extensions kaber
` (3 preceding siblings ...)
2011-11-23 16:12 ` [PATCH 4/6] extensions: add IPv6 DNAT target kaber
@ 2011-11-23 16:12 ` kaber
2011-11-23 16:12 ` [PATCH 6/6] extensions: add IPv6 NETMAP extension kaber
2011-11-24 11:03 ` [PATCH 0/6] extensions: IPv6 NAT extensions Pablo Neira Ayuso
6 siblings, 0 replies; 10+ messages in thread
From: kaber @ 2011-11-23 16:12 UTC (permalink / raw)
To: netfilter-devel; +Cc: kaber, ulrich.weber
From: Patrick McHardy <kaber@trash.net>
Signed-off-by: Patrick McHardy <kaber@trash.net>
---
extensions/libip6t_REDIRECT.c | 151 +++++++++++++++++++++++++++++++++++++++++
1 files changed, 151 insertions(+), 0 deletions(-)
create mode 100644 extensions/libip6t_REDIRECT.c
diff --git a/extensions/libip6t_REDIRECT.c b/extensions/libip6t_REDIRECT.c
new file mode 100644
index 0000000..1724aa6
--- /dev/null
+++ b/extensions/libip6t_REDIRECT.c
@@ -0,0 +1,151 @@
+/*
+ * Copyright (c) 2011 Patrick McHardy <kaber@trash.net>
+ *
+ * Based on Rusty Russell's IPv4 REDIRECT target. Development of IPv6 NAT
+ * funded by Astaro.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <xtables.h>
+#include <limits.h> /* INT_MAX in ip_tables.h */
+#include <linux/netfilter_ipv6/ip6_tables.h>
+#include <linux/netfilter/nf_nat.h>
+
+enum {
+ O_TO_PORTS = 0,
+ O_RANDOM,
+ F_TO_PORTS = 1 << O_TO_PORTS,
+ F_RANDOM = 1 << O_RANDOM,
+};
+
+static void REDIRECT_help(void)
+{
+ printf(
+"REDIRECT target options:\n"
+" --to-ports <port>[-<port>]\n"
+" Port (range) to map to.\n"
+" [--random]\n");
+}
+
+static const struct xt_option_entry REDIRECT_opts[] = {
+ {.name = "to-ports", .id = O_TO_PORTS, .type = XTTYPE_STRING},
+ {.name = "random", .id = O_RANDOM, .type = XTTYPE_NONE},
+ XTOPT_TABLEEND,
+};
+
+/* Parses ports */
+static void
+parse_ports(const char *arg, struct nf_nat_range *range)
+{
+ char *end = "";
+ unsigned int port, maxport;
+
+ range->flags |= NF_NAT_RANGE_PROTO_SPECIFIED;
+
+ if (!xtables_strtoui(arg, &end, &port, 0, UINT16_MAX) &&
+ (port = xtables_service_to_port(arg, NULL)) == (unsigned)-1)
+ xtables_param_act(XTF_BAD_VALUE, "REDIRECT", "--to-ports", arg);
+
+ switch (*end) {
+ case '\0':
+ range->min_proto.tcp.port
+ = range->max_proto.tcp.port
+ = htons(port);
+ return;
+ case '-':
+ if (!xtables_strtoui(end + 1, NULL, &maxport, 0, UINT16_MAX) &&
+ (maxport = xtables_service_to_port(end + 1, NULL)) == (unsigned)-1)
+ break;
+
+ if (maxport < port)
+ break;
+
+ range->min_proto.tcp.port = htons(port);
+ range->max_proto.tcp.port = htons(maxport);
+ return;
+ default:
+ break;
+ }
+ xtables_param_act(XTF_BAD_VALUE, "REDIRECT", "--to-ports", arg);
+}
+
+static void REDIRECT_parse(struct xt_option_call *cb)
+{
+ const struct ip6t_entry *entry = cb->xt_entry;
+ struct nf_nat_range *range = (void *)(*cb->target)->data;
+ int portok;
+
+ if (entry->ipv6.proto == IPPROTO_TCP
+ || entry->ipv6.proto == IPPROTO_UDP
+ || entry->ipv6.proto == IPPROTO_SCTP
+ || entry->ipv6.proto == IPPROTO_DCCP
+ || entry->ipv6.proto == IPPROTO_ICMP)
+ portok = 1;
+ else
+ portok = 0;
+
+ xtables_option_parse(cb);
+ switch (cb->entry->id) {
+ case O_TO_PORTS:
+ if (!portok)
+ xtables_error(PARAMETER_PROBLEM,
+ "Need TCP, UDP, SCTP or DCCP with port specification");
+ parse_ports(cb->arg, range);
+ if (cb->xflags & F_RANDOM)
+ range->flags |= NF_NAT_RANGE_PROTO_RANDOM;
+ break;
+ case O_RANDOM:
+ if (cb->xflags & F_TO_PORTS)
+ range->flags |= NF_NAT_RANGE_PROTO_RANDOM;
+ break;
+ }
+}
+
+static void REDIRECT_print(const void *ip, const struct xt_entry_target *target,
+ int numeric)
+{
+ const struct nf_nat_range *range = (const void *)target->data;
+
+ if (range->flags & NF_NAT_RANGE_PROTO_SPECIFIED) {
+ printf(" redir ports ");
+ printf("%hu", ntohs(range->min_proto.tcp.port));
+ if (range->max_proto.tcp.port != range->min_proto.tcp.port)
+ printf("-%hu", ntohs(range->max_proto.tcp.port));
+ if (range->flags & NF_NAT_RANGE_PROTO_RANDOM)
+ printf(" random");
+ }
+}
+
+static void REDIRECT_save(const void *ip, const struct xt_entry_target *target)
+{
+ const struct nf_nat_range *range = (const void *)target->data;
+
+ if (range->flags & NF_NAT_RANGE_PROTO_SPECIFIED) {
+ printf(" --to-ports ");
+ printf("%hu", ntohs(range->min_proto.tcp.port));
+ if (range->max_proto.tcp.port != range->min_proto.tcp.port)
+ printf("-%hu", ntohs(range->max_proto.tcp.port));
+ if (range->flags & NF_NAT_RANGE_PROTO_RANDOM)
+ printf(" --random");
+ }
+}
+
+static struct xtables_target redirect_tg_reg = {
+ .name = "REDIRECT",
+ .version = XTABLES_VERSION,
+ .family = NFPROTO_IPV6,
+ .size = XT_ALIGN(sizeof(struct nf_nat_range)),
+ .userspacesize = XT_ALIGN(sizeof(struct nf_nat_range)),
+ .help = REDIRECT_help,
+ .x6_parse = REDIRECT_parse,
+ .print = REDIRECT_print,
+ .save = REDIRECT_save,
+ .x6_options = REDIRECT_opts,
+};
+
+void _init(void)
+{
+ xtables_register_target(&redirect_tg_reg);
+}
--
1.7.1
^ permalink raw reply related [flat|nested] 10+ messages in thread* [PATCH 6/6] extensions: add IPv6 NETMAP extension
2011-11-23 16:12 [PATCH 0/6] extensions: IPv6 NAT extensions kaber
` (4 preceding siblings ...)
2011-11-23 16:12 ` [PATCH 5/6] extensions: add IPv6 REDIRECT extension kaber
@ 2011-11-23 16:12 ` kaber
2011-11-24 11:03 ` [PATCH 0/6] extensions: IPv6 NAT extensions Pablo Neira Ayuso
6 siblings, 0 replies; 10+ messages in thread
From: kaber @ 2011-11-23 16:12 UTC (permalink / raw)
To: netfilter-devel; +Cc: kaber, ulrich.weber
From: Patrick McHardy <kaber@trash.net>
Signed-off-by: Patrick McHardy <kaber@trash.net>
---
extensions/libip6t_NETMAP.c | 93 +++++++++++++++++++++++++++++++++++++++++++
1 files changed, 93 insertions(+), 0 deletions(-)
create mode 100644 extensions/libip6t_NETMAP.c
diff --git a/extensions/libip6t_NETMAP.c b/extensions/libip6t_NETMAP.c
new file mode 100644
index 0000000..d14dece
--- /dev/null
+++ b/extensions/libip6t_NETMAP.c
@@ -0,0 +1,93 @@
+/*
+ * Copyright (c) 2011 Patrick McHardy <kaber@trash.net>
+ *
+ * Based on Svenning Soerensen's IPv4 NETMAP target. Development of IPv6 NAT
+ * funded by Astaro.
+ */
+
+#include <stdio.h>
+#include <netdb.h>
+#include <string.h>
+#include <stdlib.h>
+#include <getopt.h>
+#include <xtables.h>
+#include <libiptc/libip6tc.h>
+#include <linux/netfilter/nf_nat.h>
+
+#define MODULENAME "NETMAP"
+
+enum {
+ O_TO = 0,
+};
+
+static const struct xt_option_entry NETMAP_opts[] = {
+ {.name = "to", .id = O_TO, .type = XTTYPE_HOSTMASK,
+ .flags = XTOPT_MAND},
+ XTOPT_TABLEEND,
+};
+
+static void NETMAP_help(void)
+{
+ printf(MODULENAME" target options:\n"
+ " --%s address[/mask]\n"
+ " Network address to map to.\n\n",
+ NETMAP_opts[0].name);
+}
+
+static void NETMAP_parse(struct xt_option_call *cb)
+{
+ struct nf_nat_range *range = cb->data;
+ unsigned int i;
+
+ xtables_option_parse(cb);
+ range->flags |= NF_NAT_RANGE_MAP_IPS;
+ for (i = 0; i < 4; i++) {
+ range->min_addr.ip6[i] = cb->val.haddr.ip6[i] &
+ cb->val.hmask.ip6[i];
+ range->max_addr.ip6[i] = range->min_addr.ip6[i] |
+ ~cb->val.hmask.ip6[i];
+ }
+}
+
+static void NETMAP_print(const void *ip, const struct xt_entry_target *target,
+ int numeric)
+{
+ const struct nf_nat_range *r = (const void *)target->data;
+ struct in6_addr a;
+ unsigned int i;
+ int bits;
+
+ a = r->min_addr.in6;
+ printf("%s", xtables_ip6addr_to_numeric(&a));
+ for (i = 0; i < 4; i++)
+ a.s6_addr32[i] = ~(r->min_addr.ip6[i] ^ r->max_addr.ip6[i]);
+ bits = ipv6_prefix_length(&a);
+ if (bits < 0)
+ printf("/%s", xtables_ip6addr_to_numeric(&a));
+ else
+ printf("/%d", bits);
+}
+
+static void NETMAP_save(const void *ip, const struct xt_entry_target *target)
+{
+ printf(" --%s ", NETMAP_opts[0].name);
+ NETMAP_print(ip, target, 0);
+}
+
+static struct xtables_target netmap_tg_reg = {
+ .name = MODULENAME,
+ .version = XTABLES_VERSION,
+ .family = NFPROTO_IPV6,
+ .size = XT_ALIGN(sizeof(struct nf_nat_range)),
+ .userspacesize = XT_ALIGN(sizeof(struct nf_nat_range)),
+ .help = NETMAP_help,
+ .x6_parse = NETMAP_parse,
+ .print = NETMAP_print,
+ .save = NETMAP_save,
+ .x6_options = NETMAP_opts,
+};
+
+void _init(void)
+{
+ xtables_register_target(&netmap_tg_reg);
+}
--
1.7.1
^ permalink raw reply related [flat|nested] 10+ messages in thread* Re: [PATCH 0/6] extensions: IPv6 NAT extensions
2011-11-23 16:12 [PATCH 0/6] extensions: IPv6 NAT extensions kaber
` (5 preceding siblings ...)
2011-11-23 16:12 ` [PATCH 6/6] extensions: add IPv6 NETMAP extension kaber
@ 2011-11-24 11:03 ` Pablo Neira Ayuso
2011-11-24 11:07 ` Patrick McHardy
6 siblings, 1 reply; 10+ messages in thread
From: Pablo Neira Ayuso @ 2011-11-24 11:03 UTC (permalink / raw)
To: kaber; +Cc: netfilter-devel, ulrich.weber
On Wed, Nov 23, 2011 at 05:12:24PM +0100, kaber@trash.net wrote:
> The following patches contain the IPv6 NAT extensions for my IPv6
> NAT patchset posted on Monday. Nothing particulary interesting about
> the patches ...
Great Patrick.
I can give you access to my tree (I didn't find time to request an
account to kernel.org again) so you can apply these patches to net-next
by yourself once they are done.
I expect to send updates for 3.2-rc this weekend. Then focus on
collecting patches for net-next.
^ permalink raw reply [flat|nested] 10+ messages in thread* Re: [PATCH 0/6] extensions: IPv6 NAT extensions
2011-11-24 11:03 ` [PATCH 0/6] extensions: IPv6 NAT extensions Pablo Neira Ayuso
@ 2011-11-24 11:07 ` Patrick McHardy
2011-11-24 14:41 ` Pablo Neira Ayuso
0 siblings, 1 reply; 10+ messages in thread
From: Patrick McHardy @ 2011-11-24 11:07 UTC (permalink / raw)
To: Pablo Neira Ayuso; +Cc: netfilter-devel, ulrich.weber
On 11/24/2011 12:03 PM, Pablo Neira Ayuso wrote:
> On Wed, Nov 23, 2011 at 05:12:24PM +0100, kaber@trash.net wrote:
>> The following patches contain the IPv6 NAT extensions for my IPv6
>> NAT patchset posted on Monday. Nothing particulary interesting about
>> the patches ...
> Great Patrick.
>
> I can give you access to my tree (I didn't find time to request an
> account to kernel.org again) so you can apply these patches to net-next
> by yourself once they are done.
Me neither. I'm going to send an update for review first though,
also Rusty had some suggestions I want to look into first.
What I do want to get into 3.2 though is the patch to export the
nf_nat.h header. We currently have your version in the -rc, my
patch renames the exported nf_nat_range to IPv4 specific names
to we don't have to make up strange names for the address family
independant struct. This of course needs to happen before the
3.2 release.
> I expect to send updates for 3.2-rc this weekend. Then focus on
> collecting patches for net-next.
I'll send an updated patchset tommorrow.
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH 0/6] extensions: IPv6 NAT extensions
2011-11-24 11:07 ` Patrick McHardy
@ 2011-11-24 14:41 ` Pablo Neira Ayuso
0 siblings, 0 replies; 10+ messages in thread
From: Pablo Neira Ayuso @ 2011-11-24 14:41 UTC (permalink / raw)
To: Patrick McHardy; +Cc: netfilter-devel, ulrich.weber
On Thu, Nov 24, 2011 at 12:07:29PM +0100, Patrick McHardy wrote:
> On 11/24/2011 12:03 PM, Pablo Neira Ayuso wrote:
> >On Wed, Nov 23, 2011 at 05:12:24PM +0100, kaber@trash.net wrote:
> >>The following patches contain the IPv6 NAT extensions for my IPv6
> >>NAT patchset posted on Monday. Nothing particulary interesting about
> >>the patches ...
> >Great Patrick.
> >
> >I can give you access to my tree (I didn't find time to request an
> >account to kernel.org again) so you can apply these patches to net-next
> >by yourself once they are done.
>
> Me neither. I'm going to send an update for review first though,
> also Rusty had some suggestions I want to look into first.
Nice.
> What I do want to get into 3.2 though is the patch to export the
> nf_nat.h header. We currently have your version in the -rc, my
> patch renames the exported nf_nat_range to IPv4 specific names
> to we don't have to make up strange names for the address family
> independant struct. This of course needs to happen before the
> 3.2 release.
OK, send me a patch for this an I'll pass it to get it included in
3.2.
> >I expect to send updates for 3.2-rc this weekend. Then focus on
> >collecting patches for net-next.
>
> I'll send an updated patchset tommorrow.
Thanks, I'll try to give them some testing during the weekend.
^ permalink raw reply [flat|nested] 10+ messages in thread