[PATCH net-next] net: ipip: use tunnel parameters for fill_forward_path route lookup
From: Lorenzo Bianconi <lorenzo@kernel.org>
Date: 2026-07-08 11:25:37
Also in:
netfilter-devel
Subsystem:
networking [general], networking [ipv4/ipv6], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, David Ahern, Ido Schimmel, Linus Torvalds
Pass source address, DSCP and output interface from the tunnel configuration to ip_route_output() in ipip_fill_forward_path(), aligning the route lookup with the slow path in ipip_tunnel_xmit(). Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> --- net/ipv4/ipip.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/net/ipv4/ipip.c b/net/ipv4/ipip.c
index b643194f57d2..d1aa048a6099 100644
--- a/net/ipv4/ipip.c
+++ b/net/ipv4/ipip.c@@ -360,8 +360,9 @@ static int ipip_fill_forward_path(struct net_device_path_ctx *ctx, const struct iphdr *tiph = &tunnel->parms.iph; struct rtable *rt; - rt = ip_route_output(dev_net(ctx->dev), tiph->daddr, 0, 0, 0, - RT_SCOPE_UNIVERSE); + rt = ip_route_output(dev_net(ctx->dev), tiph->daddr, tiph->saddr, + inet_dsfield_to_dscp(tiph->tos), + tunnel->parms.link, RT_SCOPE_UNIVERSE); if (IS_ERR(rt)) return PTR_ERR(rt);
--- base-commit: 155c68aef2397f8c5d72ef10acf48ae159bf1869 change-id: 20260708-ipip-route-lookup-fill_forward_path-6a8a1f45084c Best regards, -- Lorenzo Bianconi [off-list ref]