From b0f9ca53cbb103e9240a29a974e0b6085e58f9f7 Mon Sep 17 00:00:00 2001 From: Fan Du Date: Tue, 10 Feb 2015 09:53:16 +0800 Subject: ipv4: Namespecify TCP PMTU mechanism Packetization Layer Path MTU Discovery works separately beside Path MTU Discovery at IP level, different net namespace has various requirements on which one to chose, e.g., a virutalized container instance would require TCP PMTU to probe an usable effective mtu for underlying tunnel, while the host would employ classical ICMP based PMTU to function. Hence making TCP PMTU mechanism per net namespace to decouple two functionality. Furthermore the probe base MSS should also be configured separately for each namespace. Signed-off-by: Fan Du Signed-off-by: David S. Miller --- include/net/netns/ipv4.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/net/netns') diff --git a/include/net/netns/ipv4.h b/include/net/netns/ipv4.h index e0bdcb1..dbe2254 100644 --- a/include/net/netns/ipv4.h +++ b/include/net/netns/ipv4.h @@ -82,6 +82,8 @@ struct netns_ipv4 { int sysctl_fwmark_reflect; int sysctl_tcp_fwmark_accept; + int sysctl_tcp_mtu_probing; + int sysctl_tcp_base_mss; struct ping_group_range ping_group_range; -- cgit v1.1