libxt_CT: Add the "NOTRACK" alias
Available since Linux kernel 3.8.
Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
diff --git a/extensions/libxt_CT.c b/extensions/libxt_CT.c
index c8437b6..6b28fe1 100644
--- a/extensions/libxt_CT.c
+++ b/extensions/libxt_CT.c
@@ -195,6 +195,10 @@
const struct xt_ct_target_info_v1 *info =
(const struct xt_ct_target_info_v1 *)target->data;
+ if (info->flags & XT_CT_NOTRACK_ALIAS) {
+ printf (" NOTRACK");
+ return;
+ }
printf(" CT");
if (info->flags & XT_CT_NOTRACK)
printf(" notrack");
@@ -217,6 +221,8 @@
const struct xt_ct_target_info *info =
(const struct xt_ct_target_info *)target->data;
+ if (info->flags & XT_CT_NOTRACK_ALIAS)
+ return;
if (info->flags & XT_CT_NOTRACK)
printf(" --notrack");
if (info->helper[0])
@@ -236,6 +242,8 @@
const struct xt_ct_target_info_v1 *info =
(const struct xt_ct_target_info_v1 *)target->data;
+ if (info->flags & XT_CT_NOTRACK_ALIAS)
+ return;
if (info->flags & XT_CT_NOTRACK)
printf(" --notrack");
if (info->helper[0])
@@ -252,6 +260,14 @@
printf(" --zone %u", info->zone);
}
+static const char *
+ct_print_name_alias(const struct xt_entry_target *target)
+{
+ struct xt_ct_target_info *info = (void *)target->data;
+
+ return info->flags & XT_CT_NOTRACK_ALIAS ? "NOTRACK" : "CT";
+}
+
static void notrack_ct0_tg_init(struct xt_entry_target *target)
{
struct xt_ct_target_info *info = (void *)target->data;
@@ -266,6 +282,13 @@
info->flags = XT_CT_NOTRACK;
}
+static void notrack_ct2_tg_init(struct xt_entry_target *target)
+{
+ struct xt_ct_target_info_v1 *info = (void *)target->data;
+
+ info->flags = XT_CT_NOTRACK | XT_CT_NOTRACK_ALIAS;
+}
+
static struct xtables_target ct_target_reg[] = {
{
.family = NFPROTO_UNSPEC,
@@ -293,6 +316,20 @@
.x6_options = ct_opts_v1,
},
{
+ .family = NFPROTO_UNSPEC,
+ .name = "CT",
+ .revision = 2,
+ .version = XTABLES_VERSION,
+ .size = XT_ALIGN(sizeof(struct xt_ct_target_info_v1)),
+ .userspacesize = offsetof(struct xt_ct_target_info_v1, ct),
+ .help = ct_help_v1,
+ .print = ct_print_v1,
+ .save = ct_save_v1,
+ .alias = ct_print_name_alias,
+ .x6_parse = ct_parse_v1,
+ .x6_options = ct_opts_v1,
+ },
+ {
.family = NFPROTO_UNSPEC,
.name = "NOTRACK",
.real_name = "CT",
@@ -315,6 +352,17 @@
{
.family = NFPROTO_UNSPEC,
.name = "NOTRACK",
+ .real_name = "CT",
+ .revision = 2,
+ .ext_flags = XTABLES_EXT_ALIAS,
+ .version = XTABLES_VERSION,
+ .size = XT_ALIGN(sizeof(struct xt_ct_target_info_v1)),
+ .userspacesize = offsetof(struct xt_ct_target_info_v1, ct),
+ .init = notrack_ct2_tg_init,
+ },
+ {
+ .family = NFPROTO_UNSPEC,
+ .name = "NOTRACK",
.revision = 0,
.version = XTABLES_VERSION,
},
diff --git a/extensions/libxt_NOTRACK.man b/extensions/libxt_NOTRACK.man
index 633b965..4302b93 100644
--- a/extensions/libxt_NOTRACK.man
+++ b/extensions/libxt_NOTRACK.man
@@ -1,3 +1,3 @@
-This target disables connection tracking for all packets matching that rule.
-It is obsoleted by \-j CT \-\-notrack. Like CT, NOTRACK can only be used in
+This extension disables connection tracking for all packets matching that rule.
+It is equivalent with \-j CT \-\-notrack. Like CT, NOTRACK can only be used in
the \fBraw\fP table.
diff --git a/include/linux/netfilter/xt_CT.h b/include/linux/netfilter/xt_CT.h
index a064b8a..54528fd 100644
--- a/include/linux/netfilter/xt_CT.h
+++ b/include/linux/netfilter/xt_CT.h
@@ -3,7 +3,10 @@
#include <linux/types.h>
-#define XT_CT_NOTRACK 0x1
+enum {
+ XT_CT_NOTRACK = 1 << 0,
+ XT_CT_NOTRACK_ALIAS = 1 << 1,
+};
struct xt_ct_target_info {
__u16 flags;
