netdev - Re: [PATCH net-next,v4] bonding: support balance-alb with openvswitch

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Date: Mon, 31 Jul 2023 22:21:17 +0200
From: Mat Kowalski <mko@...hat.com>
To: "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Cc: Andy Gospodarek <andy@...yhouse.net>,
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>,
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
 Jay Vosburgh <jay.vosburgh@...onical.com>
Subject: Re: [PATCH net-next,v4] bonding: support balance-alb with openvswitch



On 31/07/2023 00:51, Jay Vosburgh wrote:
> Mat Kowalski <mko@...hat.com> wrote:
> 
>> Commit d5410ac7b0ba ("net:bonding:support balance-alb interface with
>> vlan to bridge") introduced a support for balance-alb mode for
>> interfaces connected to the linux bridge by fixing missing matching of
>> MAC entry in FDB. In our testing we discovered that it still does not
>> work when the bond is connected to the OVS bridge as show in diagram
>> below:
>>
>> eth1(mac:eth1_mac)--bond0(balance-alb,mac:eth0_mac)--eth0(mac:eth0_mac)
>>                         |
>>                       bond0.150(mac:eth0_mac)
>>                         |
>>                       ovs_bridge(ip:bridge_ip,mac:eth0_mac)
>>
>> This patch fixes it by checking not only if the device is a bridge but
>> also if it is an openvswitch.
> 
> 	What changed between v3 and v4?
> 
> 	-J

v4 changes:
- Fix additional space at the beginning of the line

v3 changes:
- Fix tab chars converted to spaces

v2 changes:
- Fix line wrapping

> 
>> Signed-off-by: Mateusz Kowalski <mko@...hat.com>
>> ---
>> drivers/net/bonding/bond_alb.c | 2 +-
>> include/linux/netdevice.h      | 5 +++++
>> 2 files changed, 6 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/net/bonding/bond_alb.c b/drivers/net/bonding/bond_alb.c
>> index b9dbad3a8af8..cc5049eb25f8 100644
>> --- a/drivers/net/bonding/bond_alb.c
>> +++ b/drivers/net/bonding/bond_alb.c
>> @@ -668,7 +668,7 @@ static struct slave *rlb_arp_xmit(struct sk_buff *skb, struct bonding *bond)
>>
>> 	dev = ip_dev_find(dev_net(bond->dev), arp->ip_src);
>> 	if (dev) {
>> -		if (netif_is_bridge_master(dev)) {
>> +		if (netif_is_any_bridge_master(dev)) {
>> 			dev_put(dev);
>> 			return NULL;
>> 		}
>> diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
>> index 84c36a7f873f..27593c0d3c15 100644
>> --- a/include/linux/netdevice.h
>> +++ b/include/linux/netdevice.h
>> @@ -5103,6 +5103,11 @@ static inline bool netif_is_ovs_port(const struct net_device *dev)
>> 	return dev->priv_flags & IFF_OVS_DATAPATH;
>> }
>>
>> +static inline bool netif_is_any_bridge_master(const struct net_device *dev)
>> +{
>> +	return netif_is_bridge_master(dev) || netif_is_ovs_master(dev);
>> +}
>> +
>> static inline bool netif_is_any_bridge_port(const struct net_device *dev)
>> {
>> 	return netif_is_bridge_port(dev) || netif_is_ovs_port(dev);
>> -- 
>> 2.41.0
> 
> ---
> 	-Jay Vosburgh, jay.vosburgh@...onical.com
>