linux-kernel - [PATCH net-next v2 4/7] ipv4: use tunnel flow flags for tunnel route lookups

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Message-Id: <20231016071526.2958108-5-b.galvani@gmail.com>
Date:   Mon, 16 Oct 2023 09:15:23 +0200
From:   Beniamino Galvani <b.galvani@...il.com>
To:     netdev@...r.kernel.org
Cc:     "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        David Ahern <dsahern@...nel.org>,
        Guillaume Nault <gnault@...hat.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH net-next v2 4/7] ipv4: use tunnel flow flags for tunnel route lookups

Commit 451ef36bd229 ("ip_tunnels: Add new flow flags field to
ip_tunnel_key") added a new field to struct ip_tunnel_key to control
route lookups. Currently the flag is used by vxlan and geneve tunnels;
use it also in udp_tunnel_dst_lookup() so that it affects all tunnel
types relying on this function.

Signed-off-by: Beniamino Galvani <b.galvani@...il.com>
Reviewed-by: David Ahern <dsahern@...nel.org>
---
 net/ipv4/udp_tunnel_core.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/ipv4/udp_tunnel_core.c b/net/ipv4/udp_tunnel_core.c
index 494685e82856..a87defb2b167 100644
--- a/net/ipv4/udp_tunnel_core.c
+++ b/net/ipv4/udp_tunnel_core.c
@@ -232,6 +232,7 @@ struct rtable *udp_tunnel_dst_lookup(struct sk_buff *skb,
 	fl4.fl4_dport = dport;
 	fl4.fl4_sport = sport;
 	fl4.flowi4_tos = RT_TOS(tos);
+	fl4.flowi4_flags = key->flow_flags;
 
 	rt = ip_route_output_key(net, &fl4);
 	if (IS_ERR(rt)) {
-- 
2.40.1