linux-kernel - Re: [PATCH 1/3] [v2] sfc: add CONFIG

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Date:   Mon, 19 Jun 2023 11:04:55 +0100
From:   Edward Cree <ecree.xilinx@...il.com>
To:     Arnd Bergmann <arnd@...nel.org>,
        Martin Habets <habetsm.xilinx@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Simon Horman <simon.horman@...igine.com>,
        Pieter Jansen van Vuuren <pieter.jansen-van-vuuren@....com>
Cc:     Arnd Bergmann <arnd@...db.de>, Jiri Pirko <jiri@...nulli.us>,
        Alejandro Lucero <alejandro.lucero-palau@....com>,
        netdev@...r.kernel.org, linux-net-drivers@....com,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] [v2] sfc: add CONFIG_INET dependency for TC offload

On 19/06/2023 10:12, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@...db.de>
> 
> The driver now fails to link when CONFIG_INET is disabled, so
> add an explicit Kconfig dependency:
> 
> ld.lld: error: undefined symbol: ip_route_output_flow
>>>> referenced by tc_encap_actions.c
>>>>               drivers/net/ethernet/sfc/tc_encap_actions.o:(efx_tc_flower_create_encap_md) in archive vmlinux.a
> 
> ld.lld: error: undefined symbol: ip_send_check
>>>> referenced by tc_encap_actions.c
>>>>               drivers/net/ethernet/sfc/tc_encap_actions.o:(efx_gen_encap_header) in archive vmlinux.a
>>>> referenced by tc_encap_actions.c
>>>>               drivers/net/ethernet/sfc/tc_encap_actions.o:(efx_gen_encap_header) in archive vmlinux.a
> 
> ld.lld: error: undefined symbol: arp_tbl
>>>> referenced by tc_encap_actions.c
>>>>               drivers/net/ethernet/sfc/tc_encap_actions.o:(efx_tc_netevent_event) in archive vmlinux.a
>>>> referenced by tc_encap_actions.c
>>>>               drivers/net/ethernet/sfc/tc_encap_actions.o:(efx_tc_netevent_event) in archive vmlinux.a
> 
> Fixes: a1e82162af0b8 ("sfc: generate encap headers for TC offload")
> Reviewed-by: Edward Cree <ecree.xilinx@...il.com>
> Reviewed-by: Simon Horman <simon.horman@...igine.com>
> Closes: https://lore.kernel.org/oe-kbuild-all/202306151656.yttECVTP-lkp@intel.com/
> Signed-off-by: Arnd Bergmann <arnd@...db.de>

Additionally
Fixes: 7e5e7d800011 ("sfc: neighbour lookup for TC encap action offload")

The subject line doesn't specify a target tree; this should be for net-next.

> ---
> v2: add Fixes and Closes tags
> ---
>  drivers/net/ethernet/sfc/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/net/ethernet/sfc/Kconfig b/drivers/net/ethernet/sfc/Kconfig
> index 4af36ba8906ba..3eb55dcfa8a61 100644
> --- a/drivers/net/ethernet/sfc/Kconfig
> +++ b/drivers/net/ethernet/sfc/Kconfig
> @@ -50,6 +50,7 @@ config SFC_MCDI_MON
>  config SFC_SRIOV
>  	bool "Solarflare SFC9100-family SR-IOV support"
>  	depends on SFC && PCI_IOV
> +	depends on INET
>  	default y
>  	help
>  	  This enables support for the Single Root I/O Virtualization
>