path: root/libxtables
diff options
authorPablo Neira Ayuso <>2012-09-27 19:12:53 +0200
committerPablo Neira Ayuso <>2013-12-30 23:50:09 +0100
commit384958620abab397062b67fb2763e813b63f74f0 (patch)
treeec01cb88585150a37f122bfbf39ea33218bafdb6 /libxtables
parent99b85b7837707bd6c6d578c9328e1321fceb8082 (diff)
use nf_tables and nf_tables compatibility interface
This patch adds the following utilities: * xtables * xtables-restore * xtables-save * xtables-config They all use Patrick's nf_tables infrastructure plus my compatibility layer. xtables, xtables-restore and xtables-save are syntax compatible with ip[6]tables, ip[6]tables-restore and ip[6]tables-save. Semantics aims to be similar, still the main exception is that there is no commit operation. Thus, we incrementally add/delete rules without entire table locking. The following options are also not yet implemented: -Z (this requires adding expr->ops->reset(...) so nft_counters can reset internal state of expressions while dumping it) -R and -E (this requires adding this feature to nf_tables) -f (can be implemented with expressions: payload 6 (2-bytes) + bitwise a&b^!b + cmp neq 0) -IPv6 support. But those are a matter of time to get them done. A new utility, xtables-config, is available to register tables and chains. By default there is a configuration file that adds backward compatible tables and chains under iptables/etc/xtables.conf. You have to call this utility first to register tables and chains. However, it would be possible to automagically register tables and chains while using xtables and xtables-restore to get similar operation than with iptables. Signed-off-by: Pablo Neira Ayuso <>
Diffstat (limited to 'libxtables')
1 files changed, 3 insertions, 3 deletions
diff --git a/libxtables/xtables.c b/libxtables/xtables.c
index fb60c01b..a511c08c 100644
--- a/libxtables/xtables.c
+++ b/libxtables/xtables.c
@@ -743,7 +743,7 @@ xtables_find_target(const char *name, enum xtables_tryload tryload)
return ptr;
-static int compatible_revision(const char *name, uint8_t revision, int opt)
+int xtables_compatible_revision(const char *name, uint8_t revision, int opt)
struct xt_get_revision rev;
socklen_t s = sizeof(rev);
@@ -799,12 +799,12 @@ static int compatible_revision(const char *name, uint8_t revision, int opt)
static int compatible_match_revision(const char *name, uint8_t revision)
- return compatible_revision(name, revision, afinfo->so_rev_match);
+ return xt_params->compat_rev(name, revision, afinfo->so_rev_match);
static int compatible_target_revision(const char *name, uint8_t revision)
- return compatible_revision(name, revision, afinfo->so_rev_target);
+ return xt_params->compat_rev(name, revision, afinfo->so_rev_target);
static void xtables_check_options(const char *name, const struct option *opt)