[PATCH nf-next v2 0/5] netfilter: conntrack: shrink size of netns_ct

[Florian Westphal <fw@strlen.de>]

v2: fix linker error when PROCFS=n. This only affects patch 4/5, no
other changes.

This reduces size of the netns_ct structure, which itself is embedded
in struct net.

First two patches move two helper related settings to net_generic,
these are only accessed when a new connection is added.

Patches 3 and 4 move the ct and expect counter to net_generic too.
While these are used from packet path, they are not accessed when
conntack finds an existing entry.

This also makes netns_ct a read-mostly structure, at this time each
newly accepted conntrack dirties the first netns_ct cacheline for other
cpus.

Last patch converts a few sysctls to u8.  Most conntrack sysctls are
timeouts, so these need to be kept as ints.

Florian Westphal (5):
  netfilter: conntrack: move autoassign warning member to net_generic
    data
  netfilter: conntrack: move autoassign_helper sysctl to net_generic
    data
  netfilter: conntrack: move expect counter to net_generic data
  netfilter: conntrack: move ct counter to net_generic data
  netfilter: conntrack: convert sysctls to u8

 include/net/netfilter/nf_conntrack.h    |  8 +++
 include/net/netns/conntrack.h           | 23 ++++-----
 net/netfilter/nf_conntrack_core.c       | 46 ++++++++++++-----
 net/netfilter/nf_conntrack_expect.c     | 22 ++++++---
 net/netfilter/nf_conntrack_helper.c     | 15 ++++--
 net/netfilter/nf_conntrack_netlink.c    |  5 +-
 net/netfilter/nf_conntrack_proto_tcp.c  | 34 ++++++-------
 net/netfilter/nf_conntrack_standalone.c | 66 +++++++++++++------------
 8 files changed, 132 insertions(+), 87 deletions(-)

-- 
2.26.3