From mboxrd@z Thu Jan 1 00:00:00 1970 From: Shivani Bhardwaj Subject: [PATCH] extensions: libip6t_hl: Add translation to nft Date: Thu, 7 Jan 2016 15:09:24 +0530 Message-ID: <20160107093924.GA6686@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-f48.google.com ([209.85.220.48]:34807 "EHLO mail-pa0-f48.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751121AbcAGJjc (ORCPT ); Thu, 7 Jan 2016 04:39:32 -0500 Received: by mail-pa0-f48.google.com with SMTP id uo6so236245783pac.1 for ; Thu, 07 Jan 2016 01:39:32 -0800 (PST) Received: from gmail.com ([223.176.149.78]) by smtp.gmail.com with ESMTPSA id yn8sm152492927pac.32.2016.01.07.01.39.29 for (version=TLS1_2 cipher=AES128-SHA bits=128/128); Thu, 07 Jan 2016 01:39:30 -0800 (PST) Content-Disposition: inline Sender: netfilter-devel-owner@vger.kernel.org List-ID: Add translation for hop limit to nftables. Examples: $ sudo ip6tables-translate -t nat -A postrouting -m hl --hl-gt 3 nft add rule ip6 nat postrouting ip6 hoplimit gt 3 counter $ sudo ip6tables-translate -t nat -A postrouting -m hl ! --hl-eq 3 nft add rule ip6 nat postrouting ip6 hoplimit != 3 counter Signed-off-by: Shivani Bhardwaj --- extensions/libip6t_hl.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/extensions/libip6t_hl.c b/extensions/libip6t_hl.c index 3559db4..0e13df1 100644 --- a/extensions/libip6t_hl.c +++ b/extensions/libip6t_hl.c @@ -97,6 +97,23 @@ static const struct xt_option_entry hl_opts[] = { }; #undef s +static int hl_xlate(const struct xt_entry_match *match, + struct xt_buf *buf, int numeric) +{ + static const char *const op[] = { + [IP6T_HL_EQ] = "ip6 hoplimit", + [IP6T_HL_NE] = "ip6 hoplimit !=", + [IP6T_HL_LT] = "ip6 hoplimit lt", + [IP6T_HL_GT] = "ip6 hoplimit gt" }; + + const struct ip6t_hl_info *info = + (struct ip6t_hl_info *) match->data; + + xt_buf_add(buf, "%s %u ", op[info->mode], info->hop_limit); + + return 1; +} + static struct xtables_match hl_mt6_reg = { .name = "hl", .version = XTABLES_VERSION, @@ -109,6 +126,7 @@ static struct xtables_match hl_mt6_reg = { .x6_parse = hl_parse, .x6_fcheck = hl_check, .x6_options = hl_opts, + .xlate = hl_xlate, }; -- 1.9.1