geneve: Use ip_tunnel_key flow flags in route lookups

Use the new ip_tunnel_key field with the flow flags in the IPv4 route
lookups for the encapsulated packet. This will be used by the
bpf_skb_set_tunnel_key helper in the subsequent commit.

Signed-off-by: Paul Chaignon <paul@isovalent.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/bpf/fcc2e0eea01e8ea465a180126366ec20596ba530.1658759380.git.paul@isovalent.com

diff --git a/drivers/net/geneve.c b/drivers/net/geneve.c
index 2495a5719e1c112aefcabae29144cde3951b3811..018d365f9debfde80e1827551228512c7ccf72f4 100644 (file)
--- a/drivers/net/geneve.c
+++ b/drivers/net/geneve.c
@@ -815,6 +815,7 @@ static struct rtable *geneve_get_v4_rt(struct sk_buff *skb,
        fl4->saddr = info->key.u.ipv4.src;
        fl4->fl4_dport = dport;
        fl4->fl4_sport = sport;
+       fl4->flowi4_flags = info->key.flow_flags;
 
        tos = info->key.tos;
        if ((tos == 1) && !geneve->cfg.collect_md) {