The following series implements some updates for NAT in nf_tables.
First of all, I add a new flag attribute to allow clients of nft_nat to
specify additional config flags. This enables implementing port randomization
and persistence to be set from nft.
Two patches split the masquerade code from ip[6]t_MASQUERADE.c to generic
modules, so we can use this NAT type from nft_nat.
Then, the nft_nat code is splitted in AF specific parts, so we avoid potential
dependencies regarding AF specific symbols in the last patch.
The last patch finally implements masquerade for nft_nat.
This v2 series includes some fixes and additionals checks, as requested
by Florian Westphal.
Comments are welcomed.
---
Arturo Borrero Gonzalez (5):
netfilter: nft_nat: include a flag attribute
netfilter: nf_nat_masquerade_ipv4: code factorization
netfilter: nf_nat_masquerade_ipv6: code factorization
netfilter: nft_nat: split code in AF parts
netfilter: nft_nat: add masquerade support
.../net/netfilter/ipv4/nf_nat_masquerade_ipv4.h | 14 ++
.../net/netfilter/ipv6/nf_nat_masquerade_ipv6.h | 10 +
include/net/netfilter/nft_nat.h | 20 ++
include/uapi/linux/netfilter/nf_nat.h | 5 +
include/uapi/linux/netfilter/nf_tables.h | 10 +
net/ipv4/netfilter/Kconfig | 14 ++
net/ipv4/netfilter/Makefile | 2
net/ipv4/netfilter/ipt_MASQUERADE.c | 108 +------------
net/ipv4/netfilter/nf_nat_masquerade_ipv4.c | 155 ++++++++++++++++++
net/ipv4/netfilter/nft_nat_ipv4.c | 165 ++++++++++++++++++++
net/ipv6/netfilter/Kconfig | 14 ++
net/ipv6/netfilter/Makefile | 2
net/ipv6/netfilter/ip6t_MASQUERADE.c | 76 +--------
net/ipv6/netfilter/nf_nat_masquerade_ipv6.c | 121 ++++++++++++++
net/ipv6/netfilter/nft_nat_ipv6.c | 164 ++++++++++++++++++++
net/netfilter/nft_nat.c | 168 +++-----------------
16 files changed, 735 insertions(+), 313 deletions(-)
create mode 100644 include/net/netfilter/ipv4/nf_nat_masquerade_ipv4.h
create mode 100644 include/net/netfilter/ipv6/nf_nat_masquerade_ipv6.h
create mode 100644 include/net/netfilter/nft_nat.h
create mode 100644 net/ipv4/netfilter/nf_nat_masquerade_ipv4.c
create mode 100644 net/ipv4/netfilter/nft_nat_ipv4.c
create mode 100644 net/ipv6/netfilter/nf_nat_masquerade_ipv6.c
create mode 100644 net/ipv6/netfilter/nft_nat_ipv6.c
--
Arturo Borrero Gonzalez
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