Commit bb54e589 authored by Mahesh Bandewar's avatar Mahesh Bandewar Committed by David S. Miller

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: default avatarMahesh Bandewar <maheshb@google.com>
Reviewed-by: default avatarNikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 2a12d6cf
......@@ -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;
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment