[PATCH] net/mlx5e: fix non-IPV6 build

[Arnd Bergmann]

From: Arnd Bergmann <arnd@xxxxxxxx>

When IPv6 is disabled, the flow steering code causes a build failure:

drivers/net/ethernet/mellanox/mlx5/core/en_accel/fs_tcp.c:55:14: error: no member named 'skc_v6_daddr' in 'struct sock_common'; did you mean 'skc_daddr'?
               &sk->sk_v6_daddr, 16);
                    ^
include/net/sock.h:380:34: note: expanded from macro 'sk_v6_daddr'
 #define sk_v6_daddr             __sk_common.skc_v6_daddr

Hide the newly added function in an #ifdef that matches its callers
and the struct member definition.

Fixes: 5229a96e59ec ("net/mlx5e: Accel, Expose flow steering API for rules add/del")
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
---
 drivers/net/ethernet/mellanox/mlx5/core/en_accel/fs_tcp.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/fs_tcp.c b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/fs_tcp.c
index 97f1594cee11..e51f60b55daa 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/fs_tcp.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/fs_tcp.c
@@ -44,6 +44,7 @@ static void accel_fs_tcp_set_ipv4_flow(struct mlx5_flow_spec *spec, struct sock
 			 outer_headers.dst_ipv4_dst_ipv6.ipv4_layout.ipv4);
 }
 
+#if IS_ENABLED(CONFIG_IPV6)
 static void accel_fs_tcp_set_ipv6_flow(struct mlx5_flow_spec *spec, struct sock *sk)
 {
 	MLX5_SET_TO_ONES(fte_match_param, spec->match_criteria, outer_headers.ip_protocol);
@@ -63,6 +64,7 @@ static void accel_fs_tcp_set_ipv6_flow(struct mlx5_flow_spec *spec, struct sock
 			    outer_headers.dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
 	       0xff, 16);
 }
+#endif
 
 void mlx5e_accel_fs_del_sk(struct mlx5_flow_handle *rule)
 {
-- 
2.27.0