netdev - Re: [net PATCH 2/2] vxlan: Fix boolean flip in VXLAN_F_UDP_ZERO_CSUM6

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Message-ID: <CA+mtBx9bKxr-rh-wvNiVmD8aCuntYr_XNGYvAtO77H5Nmbs3+g@mail.gmail.com>
Date:	Mon, 24 Nov 2014 20:20:13 -0800
From:	Tom Herbert <therbert@...gle.com>
To:	Alexander Duyck <alexander.duyck@...il.com>
Cc:	Linux Netdev List <netdev@...r.kernel.org>,
	Alexander Duyck <alexander.h.duyck@...hat.com>,
	David Miller <davem@...emloft.net>
Subject: Re: [net PATCH 2/2] vxlan: Fix boolean flip in VXLAN_F_UDP_ZERO_CSUM6_[TX|RX]

On Mon, Nov 24, 2014 at 8:08 PM,  <alexander.duyck@...il.com> wrote:
> From: Alexander Duyck <alexander.h.duyck@...hat.com>
>
> In "vxlan: Call udp_sock_create" there was a logic error that resulted in
> the default for IPv6 VXLAN tunnels going from using checksums to not using
> checksums.  Since there is currently no support in iproute2 for setting
> these values it means that a kernel after the change cannot talk over a IPv6
> VXLAN tunnel to a kernel prior the change.
>
> Fixes: 3ee64f3 ("vxlan: Call udp_sock_create")
>
> Cc: Tom Herbert <therbert@...gle.com>
> Signed-off-by: Alexander Duyck <alexander.h.duyck@...hat.com>
> ---
>  drivers/net/vxlan.c |    4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
> index e1e335c..be4649a 100644
> --- a/drivers/net/vxlan.c
> +++ b/drivers/net/vxlan.c
> @@ -2306,9 +2306,9 @@ static struct socket *vxlan_create_sock(struct net *net, bool ipv6,
>         if (ipv6) {
>                 udp_conf.family = AF_INET6;
>                 udp_conf.use_udp6_tx_checksums =
> -                   !!(flags & VXLAN_F_UDP_ZERO_CSUM6_TX);
> +                   !(flags & VXLAN_F_UDP_ZERO_CSUM6_TX);
>                 udp_conf.use_udp6_rx_checksums =
> -                   !!(flags & VXLAN_F_UDP_ZERO_CSUM6_RX);
> +                   !(flags & VXLAN_F_UDP_ZERO_CSUM6_RX);
>         } else {
>                 udp_conf.family = AF_INET;
>                 udp_conf.local_ip.s_addr = INADDR_ANY;
>

Acked-by: Tom Herbert <therbert@...gle.com>
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