linux-kernel - Re: [PATCH iwl-net] i40e: Fix waiting for queues of all VSIs to be disabled

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Message-ID: <076f1ccc-aa16-46e5-a3df-b8fac7dbc0ca@intel.com>
Date:   Thu, 9 Nov 2023 10:20:50 +0100
From:   Wojciech Drewek <wojciech.drewek@...el.com>
To:     Ivan Vecera <ivecera@...hat.com>,
        <intel-wired-lan@...ts.osuosl.org>
CC:     Jacob Keller <jacob.e.keller@...el.com>,
        Jesse Brandeburg <jesse.brandeburg@...el.com>,
        Tony Nguyen <anthony.l.nguyen@...el.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        "Jeff Kirsher" <jeffrey.t.kirsher@...el.com>,
        Neerav Parikh <neerav.parikh@...el.com>,
        "open list:NETWORKING DRIVERS" <netdev@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH iwl-net] i40e: Fix waiting for queues of all VSIs to be
 disabled



On 08.11.2023 17:01, Ivan Vecera wrote:
> The function i40e_pf_wait_queues_disabled() iterates all PF's VSIs
> up to 'pf->hw.func_caps.num_vsis' but this is incorrect because
> the real number of VSIs can be up to 'pf->num_alloc_vsi' that
> can be higher. Fix this loop.
> 
> Fixes: 69129dc39fac ("i40e: Modify Tx disable wait flow in case of DCB reconfiguration")
> Signed-off-by: Ivan Vecera <ivecera@...hat.com>

Thanks Ivan!
Reviewed-by: Wojciech Drewek <wojciech.drewek@...el.com>

> ---
>  drivers/net/ethernet/intel/i40e/i40e_main.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c
> index 6a2907674583..de19d753ba83 100644
> --- a/drivers/net/ethernet/intel/i40e/i40e_main.c
> +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
> @@ -5340,7 +5340,7 @@ static int i40e_pf_wait_queues_disabled(struct i40e_pf *pf)
>  {
>  	int v, ret = 0;
>  
> -	for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
> +	for (v = 0; v < pf->num_alloc_vsi; v++) {
>  		if (pf->vsi[v]) {
>  			ret = i40e_vsi_wait_queues_disabled(pf->vsi[v]);
>  			if (ret)