src: support for restoring element counters

This patch allows you to restore counters in dynamic sets:

 table ip test {
        set test {
                type ipv4_addr
                size 65535
                flags dynamic,timeout
                timeout 30d
                gc-interval 1d
                elements = { 192.168.10.13 expires 19d23h52m27s576ms counter packets 51 bytes 17265 }
        }
        chain output {
                type filter hook output priority 0;
                update @test { ip saddr }
        }
 }

You can also add counters to elements from the control place, ie.

 table ip test {
        set test {
                type ipv4_addr
                size 65535
                elements = { 192.168.2.1 counter packets 75 bytes 19043 }
        }

        chain output {
                type filter hook output priority filter; policy accept;
                ip daddr @test
        }
 }

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

1 files changed, 1 insertions, 0 deletions

diff --git a/include/netlink.h b/include/netlink.h
index c2eb8949..0a5fde3c 100644
--- a/include/netlink.h
+++ b/include/netlink.h
@@ -113,6 +113,7 @@ extern void netlink_gen_data(const struct expr *expr,
 extern void netlink_gen_raw_data(const mpz_t value, enum byteorder byteorder,
 				 unsigned int len,
 				 struct nft_data_linearize *data);
+extern struct nftnl_expr *netlink_gen_stmt_stateful(const struct stmt *stmt);
 
 extern struct expr *netlink_alloc_value(const struct location *loc,
 				        const struct nft_data_delinearize *nld);