From: wenxu <we...@ucloud.cn>
The tunnel dvice such as vxlan, bareudp and geneve in the lwt mode set
the outer df only based TUNNEL_DONT_FRAGMENT.
And this is also the some behavior for gre device before switching to use
ip_md_tunnel_xmit as the following patch.
962924f ip_gre: Refactor collect metatdata mode tunnel xmit to
ip_md_tunnel_xmit
When the ip_gre in lwt mode xmit with ip_md_tunnel_xmi changed the rule and
make the discrepancy between handling of DF by different tunnels. So in the
ip_md_tunnel_xmit should follow the same rule like other tunnels.
Fixes: cfc7381b3002 ("ip_tunnel: add collect_md mode to IPIP tunnel")
Signed-off-by: wenxu <we...@ucloud.cn>
---
v2: amend the commit message
net/ipv4/ip_tunnel.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/net/ipv4/ip_tunnel.c b/net/ipv4/ip_tunnel.c
index 8b04d1d..ee65c92 100644
--- a/net/ipv4/ip_tunnel.c
+++ b/net/ipv4/ip_tunnel.c
@@ -608,9 +608,6 @@ void ip_md_tunnel_xmit(struct sk_buff *skb, struct
net_device *dev,
ttl = ip4_dst_hoplimit(&rt->dst);
}
- if (!df && skb->protocol == htons(ETH_P_IP))
- df = inner_iph->frag_off & htons(IP_DF);
-
headroom += LL_RESERVED_SPACE(rt->dst.dev) + rt->dst.header_len;
if (headroom > dev->needed_headroom)
dev->needed_headroom = headroom;
--
1.8.3.1
