netfilter: nft_tunnel: also dump ERSPAN_VERSION

This is not necessary, but it'll be easier to parse in userspace,
also given that other places like act_tunnel_key, cls_flower and
ip_tunnel_core are also doing so.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

diff --git a/net/netfilter/nft_tunnel.c b/net/netfilter/nft_tunnel.c
index 6538895466e097fb5cf5d7acd0c0b2a65cab38bb..b3a9b10ff43d0c89072b4b91a6d99ad454fb5b38 100644 (file)
--- a/net/netfilter/nft_tunnel.c
+++ b/net/netfilter/nft_tunnel.c
@@ -479,6 +479,9 @@ static int nft_tunnel_opts_dump(struct sk_buff *skb,
                                 htonl(opts->u.vxlan.gbp)))
                        return -1;
        } else if (opts->flags & TUNNEL_ERSPAN_OPT) {
+               if (nla_put_be32(skb, NFTA_TUNNEL_KEY_ERSPAN_VERSION,
+                                htonl(opts->u.erspan.version)))
+                       return -1;
                switch (opts->u.erspan.version) {
                case ERSPAN_VERSION:
                        if (nla_put_be32(skb, NFTA_TUNNEL_KEY_ERSPAN_V1_INDEX,