linux-kernel - [PATCH v2 net 4/4] ipv6: do not use RT

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Date:   Tue, 2 Aug 2022 14:09:35 +0200
From:   Matthias May <matthias.may@...termo.com>
To:     <netdev@...r.kernel.org>
CC:     <davem@...emloft.net>, <edumazet@...gle.com>, <kuba@...nel.org>,
        <pabeni@...hat.com>, <roopa@...dia.com>,
        <eng.alaamohamedsoliman.am@...il.com>, <bigeasy@...utronix.de>,
        <saeedm@...dia.com>, <leon@...nel.org>, <roid@...dia.com>,
        <maord@...dia.com>, <lariel@...dia.com>, <vladbu@...dia.com>,
        <cmi@...dia.com>, <gnault@...hat.com>, <yoshfuji@...ux-ipv6.org>,
        <dsahern@...nel.org>, <linux-kernel@...r.kernel.org>,
        <bpf@...r.kernel.org>, <linux-rdma@...r.kernel.org>,
        <nicolas.dichtel@...nd.com>, <eyal.birger@...il.com>,
        <jesse@...ira.com>, <linville@...driver.com>,
        <daniel@...earbox.net>, <hadarh@...lanox.com>,
        <ogerlitz@...lanox.com>, <willemb@...gle.com>,
        <martin.varghese@...ia.com>,
        Matthias May <matthias.may@...termo.com>
Subject: [PATCH v2 net 4/4] ipv6: do not use RT_TOS for IPv6 flowlabel

According to Guillaume Nault RT_TOS should never be used for IPv6.

Fixes: 571912c69f0e ("net: UDP tunnel encapsulation module for tunnelling different protocols like MPLS, IP, NSH etc.")
Signed-off-by: Matthias May <matthias.may@...termo.com>
---
v1 -> v2:
 - Fix spacing of "Fixes" tag.
 - Add missing CCs
---
 net/ipv6/ip6_output.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index 77e3f5970ce4..ec62f472aa1c 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -1311,8 +1311,7 @@ struct dst_entry *ip6_dst_lookup_tunnel(struct sk_buff *skb,
 	fl6.daddr = info->key.u.ipv6.dst;
 	fl6.saddr = info->key.u.ipv6.src;
 	prio = info->key.tos;
-	fl6.flowlabel = ip6_make_flowinfo(RT_TOS(prio),
-					  info->key.label);
+	fl6.flowlabel = ip6_make_flowinfo(prio, info->key.label);
 
 	dst = ipv6_stub->ipv6_dst_lookup_flow(net, sock->sk, &fl6,
 					      NULL);
-- 
2.35.1