From 9a1c44d989bff4c992b8b9a112d9fda275ea5515 Mon Sep 17 00:00:00 2001 From: Eric Garver Date: Fri, 2 Jun 2017 14:54:10 -0400 Subject: [PATCH] geneve: fix needed_headroom and max_mtu for collect_metadata Since commit 9b4437a5b870 ("geneve: Unify LWT and netdev handling.") when using COLLECT_METADATA geneve devices are created with too small of a needed_headroom and too large of a max_mtu. This is because ip_tunnel_info_af() is not valid with the device level info when using COLLECT_METADATA and we mistakenly fall into the IPv4 case. For COLLECT_METADATA, always use the worst case of ipv6 since both sockets are created. Fixes: 9b4437a5b870 ("geneve: Unify LWT and netdev handling.") Signed-off-by: Eric Garver Acked-by: Pravin B Shelar Signed-off-by: David S. Miller --- drivers/net/geneve.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/geneve.c b/drivers/net/geneve.c index 959fd12d2e67..6ebb0f559a42 100644 --- a/drivers/net/geneve.c +++ b/drivers/net/geneve.c @@ -1133,7 +1133,7 @@ static int geneve_configure(struct net *net, struct net_device *dev, /* make enough headroom for basic scenario */ encap_len = GENEVE_BASE_HLEN + ETH_HLEN; - if (ip_tunnel_info_af(info) == AF_INET) { + if (!metadata && ip_tunnel_info_af(info) == AF_INET) { encap_len += sizeof(struct iphdr); dev->max_mtu -= sizeof(struct iphdr); } else { -- 2.30.2