From 444ac7bee1452cdf59ec44400db210423052d109 Mon Sep 17 00:00:00 2001
From: Florian Westphal <fw@strlen.de>
Date: Wed, 5 Jul 2017 00:54:27 +0200
Subject: rt: add path mtu support

Only use case is to allow similar behaviour to iptables
TCPMSS --clamp-mss-to-pmtu, by combining this with exthdr statement:

tcp option maxseg size set rt mtu

Signed-off-by: Florian Westphal <fw@strlen.de>
Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
 src/rt.c | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'src/rt.c')

diff --git a/src/rt.c b/src/rt.c
index cd2d5a4e..91be5a11 100644
--- a/src/rt.c
+++ b/src/rt.c
@@ -73,6 +73,11 @@ static const struct rt_template rt_templates[] = {
 					      16 * BITS_PER_BYTE,
 					      BYTEORDER_BIG_ENDIAN,
 					      true),
+	[NFT_RT_TCPMSS]		= RT_TEMPLATE("mtu",
+					      &integer_type,
+					      2 * BITS_PER_BYTE,
+					      BYTEORDER_HOST_ENDIAN,
+					      false),
 };
 
 static void rt_expr_print(const struct expr *expr, struct output_ctx *octx)
-- 
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