src: listing of stateful objects

This patch allows you to dump existing stateful objects, eg.

 # nft list ruleset
 table ip filter {
        counter test {
                packets 64 bytes 1268
        }

        quota test {
                over 1 mbytes used 1268 bytes
        }

        chain input {
                type filter hook input priority 0; policy accept;
                quota name test drop
                counter name test
        }
 }

 # nft list quotas
 table ip filter {
        quota test {
                over 1 mbytes used 1268 bytes
        }
 }
 # nft list counters
 table ip filter {
        counter test {
                packets 64 bytes 1268
        }
 }

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 4 insertions, 0 deletions

diff --git a/include/netlink.h b/include/netlink.h
index 363b5251..ce577871 100644
--- a/include/netlink.h
+++ b/include/netlink.h
@@ -6,6 +6,7 @@
 #include <libnftnl/rule.h>
 #include <libnftnl/expr.h>
 #include <libnftnl/set.h>
+#include <libnftnl/object.h>
 
 #include <linux/netlink.h>
 #include <linux/netfilter/nf_tables.h>
@@ -168,6 +169,9 @@ extern int netlink_get_setelems(struct netlink_ctx *ctx, const struct handle *h,
 extern int netlink_flush_setelems(struct netlink_ctx *ctx, const struct handle *h,
 				  const struct location *loc);
 
+extern int netlink_list_objs(struct netlink_ctx *ctx, const struct handle *h,
+			       const struct location *loc);
+
 extern void netlink_dump_table(const struct nftnl_table *nlt);
 extern void netlink_dump_chain(const struct nftnl_chain *nlc);
 extern void netlink_dump_rule(const struct nftnl_rule *nlr);