[PATCH] ibmveth: Fix use of ibmveth in a bridge.

From: Thomas Bogendoerfer <redacted>

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 <redacted>
---
ms: added commit message
---
 drivers/net/ethernet/ibm/ibmveth.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/drivers/net/ethernet/ibm/ibmveth.c b/drivers/net/ethernet/ibm/ibmveth.c
index 7ef3369953b6..c3ec9ceed833 100644
--- 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;
 }
 

-- 
2.28.0

On Mon, 26 Oct 2020 11:42:21 +0100 Michal Suchanek wrote:

From: Thomas Bogendoerfer <redacted>

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 <redacted>

Since the From: line says Thomas we need a signoff from him.

On Mon, 26 Oct 2020 11:52:37 -0700
Jakub Kicinski [off-list ref] wrote:

On Mon, 26 Oct 2020 11:42:21 +0100 Michal Suchanek wrote:

quoted

From: Thomas Bogendoerfer <redacted>

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 <redacted>

Since the From: line says Thomas we need a signoff from him.

you can add

Signed-off-by: <redacted>

Thomas.

-- 
SUSE Software Solutions Germany GmbH
HRB 36809 (AG Nürnberg)
Geschäftsführer: Felix Imendörffer

On Mon, 26 Oct 2020 20:04:07 +0100 Thomas Bogendoerfer wrote:

quoted

On Mon, 26 Oct 2020 11:42:21 +0100 Michal Suchanek wrote:  

quoted

From: Thomas Bogendoerfer <redacted>

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 <redacted>  

Since the From: line says Thomas we need a signoff from him.  

you can add

Signed-off-by: <redacted>

Applied, thanks.