[RFC][PATCH 0/5] IPVS full NAT support + netfilter 'ipvs' match support

[Hannes Eder <heder@google.com>]

The following series is aiming at adding full NAT support to IPVS.  The
approach is via a minimal change to IPVS (make friends with nf_conntrack)
and adding a netfilter matcher (xt_ipvs + libxt_ipvs).

Example usage:

% ipvsadm -A -t 192.168.100.30:8080 -s rr
% ipvsadm -a -t 192.168.100.30:8080 -r 192.168.10.20:8080 -m
# ...

# SNAT for VIP 192.168.100.30:8080
% iptables -t nat -A POSTROUTING -m ipvs --vaddr 192.168.100.30/32 --vport 8080 \
> -j SNAT --to-source 192.168.10.10 

Comments?

Changes to the linux kernel:

Hannes Eder (4):
      IPVS: debugging output for ip_vs_update_conntrack
      IPVS: make friends with nf_conntrack
      netfilter: xt_ipvs (netfilter matcher for ipvs)
      IPVS: prefix EnterFunction and LeaveFunction msg with "IPVS:"

 include/linux/netfilter/xt_ipvs.h |   32 +++++++
 include/net/ip_vs.h               |   24 +++--
 net/netfilter/Kconfig             |    8 ++
 net/netfilter/Makefile            |    1 
 net/netfilter/ipvs/ip_vs_core.c   |   36 --------
 net/netfilter/ipvs/ip_vs_proto.c  |    1 
 net/netfilter/ipvs/ip_vs_xmit.c   |   54 ++++++++++++
 net/netfilter/xt_ipvs.c           |  171 +++++++++++++++++++++++++++++++++++++
 8 files changed, 279 insertions(+), 48 deletions(-)
 create mode 100644 include/linux/netfilter/xt_ipvs.h
 create mode 100644 net/netfilter/xt_ipvs.c


Changes to iptables:

Hannes Eder (1):
      libxt_ipvs: user space lib for netfilter matcher xt_ipvs

 extensions/libxt_ipvs.c           |  350 +++++++++++++++++++++++++++++++++++++
 extensions/libxt_ipvs.man         |    7 +
 include/linux/netfilter/xt_ipvs.h |   32 +++
 3 files changed, 389 insertions(+), 0 deletions(-)
 create mode 100644 extensions/libxt_ipvs.c
 create mode 100644 extensions/libxt_ipvs.man
 create mode 100644 include/linux/netfilter/xt_ipvs.h


Cheers,
-Hannes