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Date: Sun, 13 Sep 2020 19:51:51 +0800 From: Xin Long <lucien.xin@...il.com> To: network dev <netdev@...r.kernel.org> Cc: davem@...emloft.net, Jamal Hadi Salim <jhs@...atatu.com>, Cong Wang <xiyou.wangcong@...il.com>, Jiri Pirko <jiri@...nulli.us> Subject: [PATCH net 2/2] lwtunnel: only keep the available bits when setting vxlan md->gbp As we can see from vxlan_build/parse_gbp_hdr(), when processing metadata on vxlan rx/tx path, only dont_learn/policy_applied/policy_id fields can be set to or parse from the packet for vxlan gbp option. So do the mask when set it in lwtunnel, as it does in act_tunnel_key and cls_flower. Signed-off-by: Xin Long <lucien.xin@...il.com> --- net/ipv4/ip_tunnel_core.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/ipv4/ip_tunnel_core.c b/net/ipv4/ip_tunnel_core.c index 75c6013..b2ea1a8 100644 --- a/net/ipv4/ip_tunnel_core.c +++ b/net/ipv4/ip_tunnel_core.c @@ -554,6 +554,7 @@ static int ip_tun_parse_opts_vxlan(struct nlattr *attr, attr = tb[LWTUNNEL_IP_OPT_VXLAN_GBP]; md->gbp = nla_get_u32(attr); + md->gbp &= VXLAN_GBP_MASK; info->key.tun_flags |= TUNNEL_VXLAN_OPT; } -- 2.1.0
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