linux-kernel - Re: [PATCH] net/rds/Kconfig: RDS should depend on IPV6

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Date:   Fri, 27 Jul 2018 04:52:26 -0700
From:   Eric Dumazet <eric.dumazet@...il.com>
To:     Anders Roxell <anders.roxell@...aro.org>, davem@...emloft.net,
        santosh.shilimkar@...cle.com, ka-cheong.poon@...cle.com
Cc:     netdev@...r.kernel.org, linux-rdma@...r.kernel.org,
        rds-devel@....oracle.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] net/rds/Kconfig: RDS should depend on IPV6



On 07/25/2018 03:20 PM, Anders Roxell wrote:
> Build error, implicit declaration of function __inet6_ehashfn shows up
> When RDS is enabled but not IPV6.
> net/rds/connection.c: In function ‘rds_conn_bucket’:
> net/rds/connection.c:67:9: error: implicit declaration of function ‘__inet6_ehashfn’; did you mean ‘__inet_ehashfn’? [-Werror=implicit-function-declaration]
>   hash = __inet6_ehashfn(lhash, 0, fhash, 0, rds_hash_secret);
>          ^~~~~~~~~~~~~~~
>          __inet_ehashfn
> 
> Current code adds IPV6 as a depends on in config RDS.
> 
> Fixes: eee2fa6ab322 ("rds: Changing IP address internal representation to struct in6_addr")
> Signed-off-by: Anders Roxell <anders.roxell@...aro.org>
> ---
>  net/rds/Kconfig | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/net/rds/Kconfig b/net/rds/Kconfig
> index 41f75563b54b..607128f10bcd 100644
> --- a/net/rds/Kconfig
> +++ b/net/rds/Kconfig
> @@ -1,7 +1,7 @@
>  
>  config RDS
>  	tristate "The RDS Protocol"
> -	depends on INET
> +	depends on INET && CONFIG_IPV6

You probably meant :

        depends on INET && IPV6


>  	---help---
>  	  The RDS (Reliable Datagram Sockets) protocol provides reliable,
>  	  sequenced delivery of datagrams over Infiniband or TCP.
>