[dpdk-dev] testpmd: check return value of rte_eth_dev_vlan_filter()

  This patch modifies testpmd behavior when setting:
rx_vlan add all vf_port (enabling all vlanids
to be passed thru rx filter on VF).
Rx_vlan_all_filter_set() function,
checks if the next vlanid can be enabled by the driver.
Number of vlanids is limited by the NIC and thus the NIC
do not allow to enable more vlanids than it can allocate
in VFTA table.

Signed-off by: Michal Jastrzebski <michalx.k.jastrzebski@intel.com>
---
 app/test-pmd/config.c         |   14 ++++++++------
 app/test-pmd/testpmd.h        |    2 +-
 lib/librte_ether/rte_ethdev.c |    4 ++--
 3 files changed, 11 insertions(+), 9 deletions(-)
  

Hi Michal,

2015-01-23 11:43, Michal Jastrzebski:
> This patch modifies testpmd behavior when setting:
> rx_vlan add all vf_port (enabling all vlanids
> to be passed thru rx filter on VF).
> Rx_vlan_all_filter_set() function,
> checks if the next vlanid can be enabled by the driver.
> Number of vlanids is limited by the NIC and thus the NIC
> do not allow to enable more vlanids than it can allocate
> in VFTA table.
> 
> Signed-off by: Michal Jastrzebski <michalx.k.jastrzebski@intel.com>

checkpatch is not happy because you forgot an hyphen.

> @@ -1667,8 +1668,9 @@ rx_vlan_all_filter_set(portid_t port_id, int on)
>  
>  	if (port_id_is_invalid(port_id))
>  		return;
> -	for (vlan_id = 0; vlan_id < 4096; vlan_id++)
> -		rx_vft_set(port_id, vlan_id, on);
> +	for (vlan_id = 0; vlan_id < 4096; vlan_id++)	{
> +		if ( rx_vft_set(port_id, vlan_id, on) ) break;

Again, checkpatch does not like this line.

And more importantly, you make it clear that sometimes we cannot enable all
vlans and return no error.
So I wonder how is it documented in the testpmd help?

Thanks
  

> -----Original Message-----
> From: Thomas Monjalon [mailto:thomas.monjalon@6wind.com]
> Sent: Tuesday, January 27, 2015 11:33 AM
> To: Jastrzebski, MichalX K
> Cc: dev@dpdk.org
> Subject: Re: [dpdk-dev] [PATCH] testpmd: check return value of
> rte_eth_dev_vlan_filter()
> 
> Hi Michal,
> 
> 2015-01-23 11:43, Michal Jastrzebski:
> > This patch modifies testpmd behavior when setting:
> > rx_vlan add all vf_port (enabling all vlanids
> > to be passed thru rx filter on VF).
> > Rx_vlan_all_filter_set() function,
> > checks if the next vlanid can be enabled by the driver.
> > Number of vlanids is limited by the NIC and thus the NIC
> > do not allow to enable more vlanids than it can allocate
> > in VFTA table.
> >
> > Signed-off by: Michal Jastrzebski <michalx.k.jastrzebski@intel.com>
> 
> checkpatch is not happy because you forgot an hyphen.
> 
> > @@ -1667,8 +1668,9 @@ rx_vlan_all_filter_set(portid_t port_id, int on)
> >
> >  	if (port_id_is_invalid(port_id))
> >  		return;
> > -	for (vlan_id = 0; vlan_id < 4096; vlan_id++)
> > -		rx_vft_set(port_id, vlan_id, on);
> > +	for (vlan_id = 0; vlan_id < 4096; vlan_id++)	{
> > +		if ( rx_vft_set(port_id, vlan_id, on) ) break;
> 
> Again, checkpatch does not like this line.
> 
Hi Thomas,
Thanks for pointed it out. I have already fixed all checkpatch.pl errors.
I will send v2 patch for this,
> And more importantly, you make it clear that sometimes we cannot enable
> all
> vlans and return no error.
Should I return this error somewhere? Isn't just printing the error best option here?
> So I wonder how is it documented in the testpmd help?
I can add a note in testpmd_funcs.rst file or I can place some info in .help_str?
What do you mean "testpmd help"?
> 
> Thanks
> --
> Thomas
  

2015-01-27 15:58, Jastrzebski, MichalX K:
> From: Thomas Monjalon [mailto:thomas.monjalon@6wind.com]
> > And more importantly, you make it clear that sometimes we cannot enable
> > all vlans and return no error.
> 
> Should I return this error somewhere? Isn't just printing the error best option here?

Yes printing a warning before "break" seems a good idea.

> > So I wonder how is it documented in the testpmd help?
> 
> I can add a note in testpmd_funcs.rst file or I can place some info in .help_str?
> What do you mean "testpmd help"?

I mean both :)
But maybe it's not appropriate in .help_str, I'm not sure.