diff options
| author | Mahesh Bandewar <maheshb@google.com> | 2015-02-23 17:50:10 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-02-24 16:05:47 -0500 |
| commit | bb54e58929f3ce9fe4da719ff2f3264f14214b3a (patch) | |
| tree | 764c5e10ec7230d3c4ea036526100b377942e67c | |
| parent | 2a12d6cf751ff4a26f4054670d4f19ff315ed3b0 (diff) | |
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@google.com>
Reviewed-by: Nikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/bonding/bond_3ad.c | 3 |
1 files changed, 3 insertions, 0 deletions
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; |