* [PATCH next 1/6] bonding: Verify RX LACPDU has proper dest mac-addr
@ 2015-02-07 0:51 Mahesh Bandewar
2015-02-07 1:21 ` Maciej Żenczykowski
0 siblings, 1 reply; 2+ messages in thread
From: Mahesh Bandewar @ 2015-02-07 0:51 UTC (permalink / raw)
To: Jay Vosburgh, Andy Gospodarek, Veaceslav Falico,
Nikolay Aleksandrov, David Miller
Cc: Mahesh Bandewar, netdev, Eric Dumazet
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@google.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
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH next 1/6] bonding: Verify RX LACPDU has proper dest mac-addr
2015-02-07 0:51 [PATCH next 1/6] bonding: Verify RX LACPDU has proper dest mac-addr Mahesh Bandewar
@ 2015-02-07 1:21 ` Maciej Żenczykowski
0 siblings, 0 replies; 2+ messages in thread
From: Maciej Żenczykowski @ 2015-02-07 1:21 UTC (permalink / raw)
To: Mahesh Bandewar
Cc: Jay Vosburgh, Andy Gospodarek, Veaceslav Falico,
Nikolay Aleksandrov, David Miller, netdev, Eric Dumazet
Acked-by: Maciej Żenczykowski <maze@google.com>
On Fri, Feb 6, 2015 at 4:51 PM, Mahesh Bandewar <maheshb@google.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@google.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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