On 2019/8/27 15:24, walter harms wrote:

Am 27.08.2019 05:12, schrieb Mao Wenan:

quoted

When MLX5_CORE_EN=y and PCI_HYPERV_INTERFACE is not set, below errors are found:
drivers/net/ethernet/mellanox/mlx5/core/en_main.o: In function `mlx5e_nic_enable':
en_main.c:(.text+0xb649): undefined reference to `mlx5e_hv_vhca_stats_create'
drivers/net/ethernet/mellanox/mlx5/core/en_main.o: In function `mlx5e_nic_disable':
en_main.c:(.text+0xb8c4): undefined reference to `mlx5e_hv_vhca_stats_destroy'

This because CONFIG_PCI_HYPERV_INTERFACE is newly introduced by 'commit 348dd93e40c1
("PCI: hv: Add a Hyper-V PCI interface driver for software backchannel interface"),
Fix this by making MLX5_CORE_EN imply PCI_HYPERV_INTERFACE.

Fixes: cef35af34d6d ("net/mlx5e: Add mlx5e HV VHCA stats agent")
Signed-off-by: Mao Wenan <redacted>
---
 drivers/net/ethernet/mellanox/mlx5/core/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/Kconfig b/drivers/net/ethernet/mellanox/mlx5/core/Kconfig
index 37fef8c..a6a70ce 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/Kconfig
+++ b/drivers/net/ethernet/mellanox/mlx5/core/Kconfig

@@ -35,6 +35,7 @@ config MLX5_CORE_EN
 	depends on IPV6=y || IPV6=n || MLX5_CORE=m

OT but ...
is that IPV6 needed at all ? can there be something else that yes or no ?

If I set IPV6=m, errors are found as below:
drivers/net/ethernet/mellanox/mlx5/core/main.o: In function `mlx5_unload':
main.c:(.text+0x275): undefined reference to `mlx5_hv_vhca_cleanup'
drivers/net/ethernet/mellanox/mlx5/core/main.o: In function `mlx5_cleanup_once':
main.c:(.text+0x2e8): undefined reference to `mlx5_hv_vhca_destroy'
drivers/net/ethernet/mellanox/mlx5/core/main.o: In function `mlx5_load_one':
main.c:(.text+0x23c1): undefined reference to `mlx5_hv_vhca_create'
main.c:(.text+0x248f): undefined reference to `mlx5_hv_vhca_init'
main.c:(.text+0x25e0): undefined reference to `mlx5_hv_vhca_cleanup

re,
 wh

quoted

 	select PAGE_POOL
 	select DIMLIB
+	imply PCI_HYPERV_INTERFACE
 	default n
 	---help---
 	  Ethernet support in Mellanox Technologies ConnectX-4 NIC.

.