From: Kalash Nainwal <kalash@arista.com>
Date: Thu, 21 Feb 2019 00:23:04 +0000 (-0800)
Subject: net: Set rtm_table to RT_TABLE_COMPAT for ipv6 for tables > 255
X-Git-Tag: v4.20.17~23
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=53ad69776e3223e2f6731a16525286686d1ac9b1;p=thirdparty%2Fkernel%2Fstable.git

net: Set rtm_table to RT_TABLE_COMPAT for ipv6 for tables > 255

[ Upstream commit 97f0082a0592212fc15d4680f5a4d80f79a1687c ]

Set rtm_table to RT_TABLE_COMPAT for ipv6 for tables > 255 to
keep legacy software happy. This is similar to what was done for
ipv4 in commit 709772e6e065 ("net: Fix routing tables with
id > 255 for legacy software").

Signed-off-by: Kalash Nainwal <kalash@arista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index c87ce5732338c..a4ec629e15623 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -4660,7 +4660,7 @@ static int rt6_fill_node(struct net *net, struct sk_buff *skb,
 		table = rt->fib6_table->tb6_id;
 	else
 		table = RT6_TABLE_UNSPEC;
-	rtm->rtm_table = table;
+	rtm->rtm_table = table < 256 ? table : RT_TABLE_COMPAT;
 	if (nla_put_u32(skb, RTA_TABLE, table))
 		goto nla_put_failure;