Re: [dpdk-stable] [PATCH V2] net/bonding: fix lacp negotiation failed

["Wei Hu (Xavier)" <xavier.huwei@huawei.com>]

Reviewed-by: Wei Hu (Xavier) <xavier.huwei@huawei.com>


On 2020/7/10 11:29, luyicai wrote:
> From: Yicai Lu <luyicai@huawei.com>
>
> When two host is connected directly without any devices like switch,
> rx_machine_update would recieving partner lacp negotiation packets,
> and partner's port mac is filled with zeros in this packet,
> which is different with internal's mode4 mac. So in this situation,
> it would never go rx_machine branch and then execute mac swap for negotiation!
> Thus bond mode 4 will negotiation failed.
>
> Fixes: 56cbc0817399 ("net/bonding: fix LACP negotiation")
> Cc: stable@dpdk.org
>
> Signed-off-by: luyicai <luyicai@huawei.com>
> ---
> v1 -> v2: Adjust commit info style
> ---
>   drivers/net/bonding/rte_eth_bond_8023ad.c | 3 ++-
>   1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/net/bonding/rte_eth_bond_8023ad.c b/drivers/net/bonding/rte_eth_bond_8023ad.c
> index b77a37d..2002ec0 100644
> --- a/drivers/net/bonding/rte_eth_bond_8023ad.c
> +++ b/drivers/net/bonding/rte_eth_bond_8023ad.c
> @@ -798,7 +798,8 @@
>   		RTE_ASSERT(lacp->lacpdu.subtype == SLOW_SUBTYPE_LACP);
>   
>   		partner = &lacp->lacpdu.partner;
> -		if (rte_is_same_ether_addr(&partner->port_params.system,
> +		if (rte_is_zero_ether_addr(&partner->port_params.system) ||
> +			rte_is_same_ether_addr(&partner->port_params.system,
>   			&internals->mode4.mac_addr)) {
>   			/* This LACP frame is sending to the bonding port
>   			 * so pass it to rx_machine.