diff options
| author |   David Ahern <dsahern@kernel.org> | 2022-04-13 11:43:20 -0600 |
|---|---|---|
| committer |   Jakub Kicinski <kuba@kernel.org> | 2022-04-15 14:27:30 -0700 |
| commit | db53cd3d88dc328dea2e968c9c8d3b4294a8a674 (patch) | |
| tree | a4478d8286c17d1a9a228a07ac69aac30e6e4563 /include/net/ip_tunnels.h | |
| parent | l3mdev: l3mdev_master_upper_ifindex_by_index_rcu should be using netdev_master_upper_dev_get_rcu (diff) | |
| download | wireguard-linux-db53cd3d88dc328dea2e968c9c8d3b4294a8a674.tar.xz wireguard-linux-db53cd3d88dc328dea2e968c9c8d3b4294a8a674.zip | |
net: Handle l3mdev in ip_tunnel_init_flow
Ido reported that the commit referenced in the Fixes tag broke
a gre use case with dummy devices. Add a check to ip_tunnel_init_flow
to see if the oif is an l3mdev port and if so set the oif to 0 to
avoid the oif comparison in fib_lookup_good_nhc.
Fixes: 40867d74c374 ("net: Add l3mdev index to flow struct and avoid oif reset for port devices")
Reported-by: Ido Schimmel <idosch@idosch.org>
Signed-off-by: David Ahern <dsahern@kernel.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include/net/ip_tunnels.h')
| -rw-r--r-- | include/net/ip_tunnels.h | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/include/net/ip_tunnels.h b/include/net/ip_tunnels.h index 0219fe907b26..88dee57eac8a 100644 --- a/include/net/ip_tunnels.h +++ b/include/net/ip_tunnels.h @@ -243,11 +243,18 @@ static inline __be32 tunnel_id_to_key32(__be64 tun_id) static inline void ip_tunnel_init_flow(struct flowi4 *fl4, int proto, __be32 daddr, __be32 saddr, - __be32 key, __u8 tos, int oif, + __be32 key, __u8 tos, + struct net *net, int oif, __u32 mark, __u32 tun_inner_hash) { memset(fl4, 0, sizeof(*fl4)); - fl4->flowi4_oif = oif; + + if (oif) { + fl4->flowi4_l3mdev = l3mdev_master_upper_ifindex_by_index_rcu(net, oif); + /* Legacy VRF/l3mdev use case */ + fl4->flowi4_oif = fl4->flowi4_l3mdev ? 0 : oif; + } + fl4->daddr = daddr; fl4->saddr = saddr; fl4->flowi4_tos = tos; |