From mboxrd@z Thu Jan 1 00:00:00 1970 From: Shivani Bhardwaj Subject: [PATCH] extensions: libipt_MASQUERADE: Add translation to nft Date: Tue, 1 Mar 2016 23:54:44 +0530 Message-ID: <20160301182444.GA12026@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii To: netfilter-devel@vger.kernel.org Return-path: Received: from mail-pa0-f49.google.com ([209.85.220.49]:35641 "EHLO mail-pa0-f49.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750813AbcCASYv (ORCPT ); Tue, 1 Mar 2016 13:24:51 -0500 Received: by mail-pa0-f49.google.com with SMTP id bj10so47541244pad.2 for ; Tue, 01 Mar 2016 10:24:51 -0800 (PST) Received: from gmail.com ([223.183.15.73]) by smtp.gmail.com with ESMTPSA id ud10sm47245054pab.27.2016.03.01.10.24.48 for (version=TLS1_2 cipher=AES128-SHA bits=128/128); Tue, 01 Mar 2016 10:24:50 -0800 (PST) Content-Disposition: inline Sender: netfilter-devel-owner@vger.kernel.org List-ID: Add translation for target MASQUERADE to nftables. Full translation of this target awaits the support for --to-ports option. Examples: $ sudo iptables-translate -t nat -A POSTROUTING -o eth0 -j MASQUERADE nft add rule ip nat POSTROUTING oifname eth0 counter masquerade $ sudo iptables-translate -t nat -A POSTROUTING -j MASQUERADE --random nft add rule ip nat POSTROUTING counter masquerade random Signed-off-by: Shivani Bhardwaj --- extensions/libipt_MASQUERADE.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/extensions/libipt_MASQUERADE.c b/extensions/libipt_MASQUERADE.c index ea07445..1dc8853 100644 --- a/extensions/libipt_MASQUERADE.c +++ b/extensions/libipt_MASQUERADE.c @@ -134,6 +134,22 @@ MASQUERADE_save(const void *ip, const struct xt_entry_target *target) printf(" --random"); } +static int +MASQUERADE_xlate(const struct xt_entry_target *target, + struct xt_xlate *xl, int numeric) +{ + const struct nf_nat_ipv4_multi_range_compat *mr = + (const void *)target->data; + const struct nf_nat_ipv4_range *r = &mr->range[0]; + + xt_xlate_add(xl, "masquerade "); + + if (r->flags & NF_NAT_RANGE_PROTO_RANDOM) + xt_xlate_add(xl, "random "); + + return 1; +} + static struct xtables_target masquerade_tg_reg = { .name = "MASQUERADE", .version = XTABLES_VERSION, @@ -146,6 +162,7 @@ static struct xtables_target masquerade_tg_reg = { .print = MASQUERADE_print, .save = MASQUERADE_save, .x6_options = MASQUERADE_opts, + .xlate = MASQUERADE_xlate, }; void _init(void) -- 1.9.1