src: generation ID is 32-bit long

Update mnl_genid_get() to return 32-bit long generation ID. Add
nft_genid_u16() which allows us to catch ruleset updates from the
netlink dump path via 16-bit long nfnetlink resource ID field.

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

1 files changed, 2 insertions, 3 deletions

diff --git a/src/rule.c b/src/rule.c
index 1e081c8f..65145473 100644
--- a/src/rule.c
+++ b/src/rule.c
@@ -244,8 +244,6 @@ static bool cache_is_updated(struct nft_cache *cache, uint16_t genid)
 
 int cache_update(struct nft_ctx *nft, enum cmd_ops cmd, struct list_head *msgs)
 {
-	uint16_t genid;
-	int ret;
 	struct netlink_ctx ctx = {
 		.list		= LIST_HEAD_INIT(ctx.list),
 		.nft		= nft,
@@ -253,7 +251,8 @@ int cache_update(struct nft_ctx *nft, enum cmd_ops cmd, struct list_head *msgs)
 		.nft		= nft,
 	};
 	struct nft_cache *cache = &nft->cache;
-
+	uint32_t genid;
+	int ret;
 replay:
 	ctx.seqnum = cache->seqnum++;
 	genid = mnl_genid_get(&ctx);