ibmveth: Fix use of ibmveth in a bridge.

The check for src mac address in ibmveth_is_packet_unsupported is wrong.
Commit 6f2275433a2f wanted to shut down messages for loopback packets,
but now suppresses bridged frames, which are accepted by the hypervisor
otherwise bridging won't work at all.

Fixes: 6f2275433a2f ("ibmveth: Detect unsupported packets before sending to the hypervisor")
Signed-off-by: Michal Suchanek <msuchanek@suse.de>
Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
Link: https://lore.kernel.org/r/20201026104221.26570-1-msuchanek@suse.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/ibm/ibmveth.c b/drivers/net/ethernet/ibm/ibmveth.c
index 7ef3369953b6a540fa15c7ad9cb192d50f570a3e..c3ec9ceed833ed4e6d128c86bbf09aa476de91b5 100644 (file)
--- a/drivers/net/ethernet/ibm/ibmveth.c
+++ b/drivers/net/ethernet/ibm/ibmveth.c
@@ -1031,12 +1031,6 @@ static int ibmveth_is_packet_unsupported(struct sk_buff *skb,
                ret = -EOPNOTSUPP;
        }
 
-       if (!ether_addr_equal(ether_header->h_source, netdev->dev_addr)) {
-               netdev_dbg(netdev, "source packet MAC address does not match veth device's, dropping packet.\n");
-               netdev->stats.tx_dropped++;
-               ret = -EOPNOTSUPP;
-       }
-
        return ret;
 }