[dpdk-dev] i40e: fix unchecked return value

  Calling i40e_switch_rx_queue without checking return value.
Fixed by add warning log information if return failed.

Fixes: 71d35259ff67 ("i40e: tear down flow director")
Coverity ID 13198

Signed-off-by: Daniel Mrzyglod <danielx.t.mrzyglod@intel.com>
---
 drivers/net/i40e/i40e_fdir.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)
  

2016-05-24 09:25, Daniel Mrzyglod:
> Fixes: 71d35259ff67 ("i40e: tear down flow director")
> Coverity ID 13198

FYI, in recent commits I've started to standardize the coverity reports
like that:

Coverity issue: XXXXX
Fixes: ...

Please spread the word.
  

> -----Original Message-----
> From: Thomas Monjalon [mailto:thomas.monjalon@6wind.com]
> Sent: Wednesday, May 25, 2016 11:43 AM
> To: dev@dpdk.org; Mrzyglod, DanielX T <danielx.t.mrzyglod@intel.com>
> Cc: Zhang, Helin <helin.zhang@intel.com>; Wu, Jingjing
> <jingjing.wu@intel.com>; Mcnamara, John <john.mcnamara@intel.com>
> Subject: Re: [dpdk-dev] [PATCH] i40e: fix unchecked return value
> 
> 2016-05-24 09:25, Daniel Mrzyglod:
> > Fixes: 71d35259ff67 ("i40e: tear down flow director") Coverity ID
> > 13198
> 
> FYI, in recent commits I've started to standardize the coverity reports
> like that:
> 
> Coverity issue: XXXXX
> Fixes: ...
> 
> Please spread the word.

Will do.

John
  

On Tue, May 24, 2016 at 09:25:34AM +0200, Daniel Mrzyglod wrote:
> Calling i40e_switch_rx_queue without checking return value.
> Fixed by add warning log information if return failed.
> 
> Fixes: 71d35259ff67 ("i40e: tear down flow director")
> Coverity ID 13198
> 
> Signed-off-by: Daniel Mrzyglod <danielx.t.mrzyglod@intel.com>
> ---
>  drivers/net/i40e/i40e_fdir.c | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/net/i40e/i40e_fdir.c b/drivers/net/i40e/i40e_fdir.c
> index 8aa41e5..ce6d916 100644
> --- a/drivers/net/i40e/i40e_fdir.c
> +++ b/drivers/net/i40e/i40e_fdir.c
> @@ -288,12 +288,15 @@ i40e_fdir_teardown(struct i40e_pf *pf)
>  {
>  	struct i40e_hw *hw = I40E_PF_TO_HW(pf);
>  	struct i40e_vsi *vsi;
> +	int err = I40E_SUCCESS;
>  
>  	vsi = pf->fdir.fdir_vsi;
>  	if (!vsi)
>  		return;
>  	i40e_switch_tx_queue(hw, vsi->base_queue, FALSE);
> -	i40e_switch_rx_queue(hw, vsi->base_queue, FALSE);
> +	err = i40e_switch_rx_queue(hw, vsi->base_queue, FALSE);
> +	if (err)
> +		PMD_DRV_LOG(WARNING, "Failed to do FDIR RX switch off.");
>  	i40e_dev_rx_queue_release(pf->fdir.rxq);

Please see my comments to the equivalent fix on the TX side, as I believe they
apply here too.

Ref: http://dpdk.org/dev/patchwork/patch/12940/

/Bruce