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Message-Id: <1424742610-6656-1-git-send-email-maheshb@google.com> Date: Mon, 23 Feb 2015 17:50:10 -0800 From: Mahesh Bandewar <maheshb@...gle.com> To: 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> Cc: Mahesh Bandewar <maheshb@...gle.com>, Maciej Zenczykowski <maze@...gle.com>, netdev <netdev@...r.kernel.org>, Eric Dumazet <edumazet@...gle.com> Subject: [PATCH next 1/2] bonding: Verify RX LACPDU has proper dest mac-addr 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 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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