[PATCH] netronome: fix ipv6 link error

From: Arnd Bergmann
Date: Tue Jan 07 2020 - 15:07:13 EST

When the driver is built-in but ipv6 is a module, the flower
support produces a link error:

drivers/net/ethernet/netronome/nfp/flower/tunnel_conf.o: In function `nfp_tunnel_keep_alive_v6':
tunnel_conf.c:(.text+0x2aa8): undefined reference to `nd_tbl'

Add a Kconfig dependency to avoid that configuration.

Fixes: 9ea9bfa12240 ("nfp: flower: support ipv6 tunnel keep-alive messages from fw")
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
drivers/net/ethernet/netronome/Kconfig | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/netronome/Kconfig b/drivers/net/ethernet/netronome/Kconfig
index bac5be4d4f43..dcb02ce28460 100644
--- a/drivers/net/ethernet/netronome/Kconfig
+++ b/drivers/net/ethernet/netronome/Kconfig
@@ -31,6 +31,7 @@ config NFP_APP_FLOWER
bool "NFP4000/NFP6000 TC Flower offload support"
depends on NFP
depends on NET_SWITCHDEV
+ depends on IPV6 != m || NFP =m
default y
Enable driver support for TC Flower offload on NFP4000 and NFP6000.