netdev - Re: [PATCH net-next 3/3] sunvnet: generate ICMP PTMUD messages for smaller port MTUs

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Date:	Sat, 13 Sep 2014 23:19:43 +0300
From:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:	David L Stevens <david.stevens@...cle.com>,
	David Miller <davem@...emloft.net>
CC:	netdev@...r.kernel.org
Subject: Re: [PATCH net-next 3/3] sunvnet: generate ICMP PTMUD messages for
 smaller port MTUs

Hello.

On 9/13/2014 1:22 AM, David L Stevens wrote:

> This patch sends ICMP and ICMPv6 messages for Path MTU Discovery when a remote
> port MTU is smaller than the device MTU. This allows mixing newer VIO protocol
> devices that support MTU negotiation with older devices that do not on the
> same vswitch. It also allows Linux-Linux LDOMs to use 64K-1 data packets even
> though Solaris vswitch is limited to <16K MTU.

> Signed-off-by: David L Stevens <david.stevens@...cle.com>
> ---
>   drivers/net/ethernet/sun/sunvnet.c |   35 +++++++++++++++++++++++++++++++++++
>   1 files changed, 35 insertions(+), 0 deletions(-)

> diff --git a/drivers/net/ethernet/sun/sunvnet.c b/drivers/net/ethernet/sun/sunvnet.c
> index b557ec4..1251603 100644
> --- a/drivers/net/ethernet/sun/sunvnet.c
> +++ b/drivers/net/ethernet/sun/sunvnet.c
> @@ -17,6 +17,13 @@
>   #include <linux/mutex.h>
>   #include <linux/if_vlan.h>
>   +#if IS_ENABLED(CONFIG_IPV6)

    Patch spoiled as well...

> +#include <linux/icmpv6.h>
> +#endif
> +
> +#include <net/icmp.h>
> +#include <net/route.h>
> +
>   #include <asm/vio.h>
>   #include <asm/ldc.h>

WBR, Sergei

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