Re: [PATCH net-next] net: ipv4: Add ability to have GRE ignore DF bit in IPv4 payloads
flat view
From: Hannes Frederic Sowa <hidden>
Date: 2016-06-07 20:23:43
On Tue, Jun 7, 2016, at 21:48, Philip Prindeville wrote:
quoted hunk ↗ jump to hunk
static struct rtnl_link_ops ipgre_link_ops __read_mostly = {diff --git a/net/ipv4/ip_tunnel.c b/net/ipv4/ip_tunnel.c index d8f5e0a..95649eb 100644 --- a/net/ipv4/ip_tunnel.c +++ b/net/ipv4/ip_tunnel.c@@ -682,7 +682,7 @@ void ip_tunnel_xmit(struct sk_buff *skb, structnet_device *dev, } df = tnl_params->frag_off; - if (skb->protocol == htons(ETH_P_IP)) + if (skb->protocol == htons(ETH_P_IP) && !tunnel->ignore_df) df |= (inner_iph->frag_off&htons(IP_DF)); max_headroom = LL_RESERVED_SPACE(rt->dst.dev) + sizeof(struct iphdr)
Is still enforce that we inherit the ttl from the inner header to the outer header if we don't set df bit? Thanks, Hannes