linux-kernel - Re: [PATCH] RDMA/qedr: fix build error without ipv6

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Date:   Fri, 22 Sep 2017 11:57:21 -0400
From:   Doug Ledford <dledford@...hat.com>
To:     Arnd Bergmann <arnd@...db.de>, Ram Amrani <Ram.Amrani@...ium.com>,
        Michal Kalderon <Michal.Kalderon@...ium.com>,
        Ariel Elior <Ariel.Elior@...ium.com>,
        Sean Hefty <sean.hefty@...el.com>,
        Hal Rosenstock <hal.rosenstock@...il.com>
Cc:     "David S. Miller" <davem@...emloft.net>,
        "Mintz, Yuval" <Yuval.Mintz@...ium.com>,
        linux-rdma@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] RDMA/qedr: fix build error without ipv6

On Tue, 2017-09-05 at 16:59 +0200, Arnd Bergmann wrote:
> When CONFIG_IPV6 disabled, we run into a link error:
> 
> drivers/infiniband/hw/qedr/qedr_iw_cm.o: In function
> `qedr_addr6_resolve.isra.3':
> qedr_iw_cm.c:(.text+0x4e0): undefined reference to
> `ip6_route_output_flags'
> 
> The ipv6 handling code is obviously not needed here, so this
> adds a compile-time check for the Kconfig symbol in all three
> places in the code that decide between ipv4 and ipv6.
> 
> We don't have to worry about a link error wtih QEDR=y/IPV6=m, as
> that configuration is already prohibited by CONFIG_INFINIBAND
> depending on "m || IPV6 != m".
> 
> Fixes: e411e0587e0d ("RDMA/qedr: Add iWARP connection management
> functions")
> Signed-off-by: Arnd Bergmann <arnd@...db.de>

Thanks, applied to for-next area.

-- 
Doug Ledford <dledford@...hat.com>
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