From: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>
Hi,
This patchset adds the cttimeout infrastructure that allows you
to define fine-grain conntrack timeout policies, eg:
.test = {
.l3proto = 2,
.l4proto = 6,
.policy = {
.SYN_SENT = 100,
.SYN_RECV = 120,
.ESTABLISHED = 60,
.FIN_WAIT = 432000,
.CLOSE_WAIT = 120,
.LAST_ACK = 60,
.TIME_WAIT = 30,
.CLOSE = 120,
.SYN_SENT2 = 10,
},
};
Timeout policies are identify by the name. You can attach the
defined timeout policy to one flow via the CT target.
Previous proposals were not flexible enough to allow this, eg.
http://lwn.net/Articles/260066/
You can find the user-space library:
http://git.netfilter.org/cgi-bin/gitweb.cgi?p=libnetfilter_cttimeout.git;a=summary
Anytime soon, there will be one command line tool `nfct-timeout'
to allow to define timeout policies.
Pablo Neira Ayuso (7):
netfilter: nf_ct_udp[lite]: convert UDP[lite] timeouts to array
netfilter: nf_ct_tcp: move retransmission and unacknowledged timeout to array
netfilter: nf_ct_gre: add unsigned int array to define timeouts
netfilter: nf_conntrack: pass timeout array to l4->new and l4->packet
netfilter: add cttimeout infrastructure for fine timeout tuning
netfilter: nf_ct_ext: add timeout extension
netfilter: xt_CT: allow to attach timeout policy + glue code
include/linux/netfilter/Kbuild | 1 +
include/linux/netfilter/nf_conntrack_tcp.h | 5 +-
include/linux/netfilter/nfnetlink.h | 3 +-
include/linux/netfilter/nfnetlink_cttimeout.h | 114 +++++++
include/linux/netfilter/xt_CT.h | 12 +
include/net/netfilter/nf_conntrack_extend.h | 4 +
include/net/netfilter/nf_conntrack_l4proto.h | 19 +-
include/net/netfilter/nf_conntrack_timeout.h | 78 +++++
net/ipv4/netfilter/nf_conntrack_proto_icmp.c | 60 ++++-
net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c | 60 ++++-
net/netfilter/Kconfig | 21 ++
net/netfilter/Makefile | 2 +
net/netfilter/nf_conntrack_core.c | 34 ++-
net/netfilter/nf_conntrack_proto_dccp.c | 86 +++++-
net/netfilter/nf_conntrack_proto_generic.c | 77 ++++-
net/netfilter/nf_conntrack_proto_gre.c | 82 +++++-
net/netfilter/nf_conntrack_proto_sctp.c | 83 +++++-
net/netfilter/nf_conntrack_proto_tcp.c | 168 +++++++++-
net/netfilter/nf_conntrack_proto_udp.c | 106 ++++++-
net/netfilter/nf_conntrack_proto_udplite.c | 103 ++++++-
net/netfilter/nf_conntrack_timeout.c | 60 ++++
net/netfilter/nfnetlink_cttimeout.c | 416 ++++++++++++++++++++++++
net/netfilter/xt_CT.c | 220 ++++++++++++-
23 files changed, 1719 insertions(+), 95 deletions(-)
create mode 100644 include/linux/netfilter/nfnetlink_cttimeout.h
create mode 100644 include/net/netfilter/nf_conntrack_timeout.h
create mode 100644 net/netfilter/nf_conntrack_timeout.c
create mode 100644 net/netfilter/nfnetlink_cttimeout.c
--
1.7.7.3
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