linux-kernel - Re: [PATCH -next] net: mlx5: Kconfig: Fix MLX5_CORE

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Message-ID: <092f56bf-3e94-a3b6-926c-da33ba26ee37@huawei.com>
Date:   Tue, 27 Aug 2019 17:51:31 +0800
From:   maowenan <maowenan@...wei.com>
To:     <wharms@....de>
CC:     <saeedm@...lanox.com>, <leon@...nel.org>, <davem@...emloft.net>,
        <netdev@...r.kernel.org>, <linux-rdma@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <kernel-janitors@...r.kernel.org>
Subject: Re: [PATCH -next] net: mlx5: Kconfig: Fix MLX5_CORE_EN dependencies



On 2019/8/27 15:24, walter harms wrote:
> 
> 
> Am 27.08.2019 05:12, schrieb Mao Wenan:
>> 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 <maowenan@...wei.com>
>> ---
>>  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
> 
>>  	select PAGE_POOL
>>  	select DIMLIB
>> +	imply PCI_HYPERV_INTERFACE
>>  	default n
>>  	---help---
>>  	  Ethernet support in Mellanox Technologies ConnectX-4 NIC.
> 
> .
>