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Eric Dumazet a677cc3643 netfilter: ipv6: nf_defrag: reduce struct net memory waste

[ Upstream commit 9ce7bc036a ]

It is a waste of memory to use a full "struct netns_sysctl_ipv6"
while only one pointer is really used, considering netns_sysctl_ipv6
keeps growing.

Also, since "struct netns_frags" has cache line alignment,
it is better to move the frags_hdr pointer outside, otherwise
we spend a full cache line for this pointer.

This saves 192 bytes of memory per netns.

Fixes: c038a767cd ("ipv6: add a new namespace for nf_conntrack_reasm")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2018-08-24 13:12:26 +02:00

conntrack.h

netfilter: remove ip_conntrack* sysctl compat code

2016-08-13 13:27:13 +02:00

core.h

percpu: add __percpu sparse annotations to net

2010-02-16 23:05:38 -08:00

dccp.h

[NETNS][DCCPV6]: Move the dccp_v6_ctl_sk on the struct net.

2008-04-13 22:32:25 -07:00

generic.h

netns: remove BUG_ONs from net_generic()