netdev - Re: [PATCH net v2 1/3] ibmvnic: fix call_netdevice_notifiers in do

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Date:   Fri, 20 Nov 2020 14:52:47 -0800
From:   drt <drt@...ux.vnet.ibm.com>
To:     Lijun Pan <ljp@...ux.ibm.com>
Cc:     netdev@...r.kernel.org, sukadev@...ux.ibm.com, drt@...ux.ibm.com
Subject: Re: [PATCH net v2 1/3] ibmvnic: fix call_netdevice_notifiers in
 do_reset

On 2020-11-20 14:40, Lijun Pan wrote:
> When netdev_notify_peers was substituted in
> commit 986103e7920c ("net/ibmvnic: Fix RTNL deadlock during device 
> reset"),
> call_netdevice_notifiers(NETDEV_RESEND_IGMP, dev) was missed.
> Fix it now.
> 
> Fixes: 986103e7920c ("net/ibmvnic: Fix RTNL deadlock during device 
> reset")
> Signed-off-by: Lijun Pan <ljp@...ux.ibm.com>

Reviewed-by: Dany Madden <drt@...ux.ibm.com>

> ---
> v2: split from v1's 1/2
> 
>  drivers/net/ethernet/ibm/ibmvnic.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/net/ethernet/ibm/ibmvnic.c
> b/drivers/net/ethernet/ibm/ibmvnic.c
> index da15913879f8..eface3543b2c 100644
> --- a/drivers/net/ethernet/ibm/ibmvnic.c
> +++ b/drivers/net/ethernet/ibm/ibmvnic.c
> @@ -2074,8 +2074,10 @@ static int do_reset(struct ibmvnic_adapter 
> *adapter,
>  	for (i = 0; i < adapter->req_rx_queues; i++)
>  		napi_schedule(&adapter->napi[i]);
> 
> -	if (adapter->reset_reason != VNIC_RESET_FAILOVER)
> +	if (adapter->reset_reason != VNIC_RESET_FAILOVER) {
>  		call_netdevice_notifiers(NETDEV_NOTIFY_PEERS, netdev);
> +		call_netdevice_notifiers(NETDEV_RESEND_IGMP, netdev);
> +	}
> 
>  	rc = 0;