netdev - Re: [PATCH next 1/6] bonding: Verify RX LACPDU has proper dest mac-addr

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Message-ID: <CAHo-OozZTFyAapsssPKk2SmwWHJPSJMH1qhGSZSmHX2m8C6MBQ@mail.gmail.com>
Date:	Fri, 6 Feb 2015 17:21:46 -0800
From:	Maciej Żenczykowski <zenczykowski@...il.com>
To:	Mahesh Bandewar <maheshb@...gle.com>
Cc:	Jay Vosburgh <j.vosburgh@...il.com>,
	Andy Gospodarek <andy@...yhouse.net>,
	Veaceslav Falico <vfalico@...il.com>,
	Nikolay Aleksandrov <nikolay@...hat.com>,
	David Miller <davem@...emloft.net>,
	netdev <netdev@...r.kernel.org>,
	Eric Dumazet <edumazet@...gle.com>
Subject: Re: [PATCH next 1/6] bonding: Verify RX LACPDU has proper dest mac-addr

Acked-by: Maciej Żenczykowski <maze@...gle.com>

On Fri, Feb 6, 2015 at 4:51 PM, Mahesh Bandewar <maheshb@...gle.com> wrote:
> The 802.1AX standard states:
> "The DA in LACPDUs is the Slow_Protocols_Multicast address."
>
> This patch enforces that and drops LACPDUs with destination MAC
> addresses other than Slow_Protocols_Multicast address
>
> Signed-off-by: Mahesh Bandewar <maheshb@...gle.com>
> ---
>  drivers/net/bonding/bond_3ad.c | 3 +++
>  1 file changed, 3 insertions(+)
>
> diff --git a/drivers/net/bonding/bond_3ad.c b/drivers/net/bonding/bond_3ad.c
> index cfc4a9c1000a..9b436696b95e 100644
> --- a/drivers/net/bonding/bond_3ad.c
> +++ b/drivers/net/bonding/bond_3ad.c
> @@ -2485,6 +2485,9 @@ int bond_3ad_lacpdu_recv(const struct sk_buff *skb, struct bonding *bond,
>         if (skb->protocol != PKT_TYPE_LACPDU)
>                 return RX_HANDLER_ANOTHER;
>
> +       if (!MAC_ADDRESS_EQUAL(eth_hdr(skb)->h_dest, lacpdu_mcast_addr))
> +               return RX_HANDLER_ANOTHER;
> +
>         lacpdu = skb_header_pointer(skb, 0, sizeof(_lacpdu), &_lacpdu);
>         if (!lacpdu)
>                 return RX_HANDLER_ANOTHER;
> --
> 2.2.0.rc0.207.ga3a616c
>
> --
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