Re: [dpdk-stable] [DPDK 20.11] net/iavf: fix error handling for unsupported promisc config

["Xueming(Steven) Li" <xuemingl@nvidia.com>]

> -----Original Message-----
> From: Zhang, Qi Z <qi.z.zhang@intel.com>
> Sent: Monday, June 21, 2021 9:04 AM
> To: Xueming(Steven) Li <xuemingl@nvidia.com>; bluca@debian.org
> Cc: Zakharchenko, Vitaliy <vitaliy.zakharchenko@intel.com>; Anantharam, Arjun <arjun.anantharam@intel.com>; stable@dpdk.org;
> Kwan, Ngai-mint <ngai-mint.kwan@intel.com>
> Subject: RE: [dpdk-stable] [DPDK 20.11] net/iavf: fix error handling for unsupported promisc config
> 
> Hi Xueming
> 
> > -----Original Message-----
> > From: Xueming(Steven) Li <xuemingl@nvidia.com>
> > Sent: Sunday, June 20, 2021 10:05 PM
> > To: Zhang, Qi Z <qi.z.zhang@intel.com>; bluca@debian.org
> > Cc: Zakharchenko, Vitaliy <vitaliy.zakharchenko@intel.com>;
> > Anantharam, Arjun <arjun.anantharam@intel.com>; stable@dpdk.org; Kwan,
> > Ngai-mint <ngai-mint.kwan@intel.com>
> > Subject: RE: [dpdk-stable] [DPDK 20.11] net/iavf: fix error handling
> > for unsupported promisc config
> >
> > Hi Qi,
> >
> > Two upstream tag in this commit message, the first one not found in
> > upstream branch, could you please check?
> 
> Yes, the commit log is not correct, it should be 50937e495f5bcc5985365b3b93e34b6efffeca10, will fix in v2.
> 
> > BTW, the patch can't be applied to 20.11 work queue branch, could you
> > please rebase on latest version?
> > 	https://github.com/steevenlee/dpdk/commits/20.11
> 
> Actually I found the second patch (0c35eecf) is already in your working queue, and the other one (50937e495) is merged in DPDK main
> repo with Cc stable, I assume it will be captured as well.
> So I think you can just ignore this patch now :) sorry for the noise.

NP, 50937e495 is merged after v21.05, so it will be collected into next LTS drop, i.e. 20.11.3.
20.11.2 includes fixes up to v21.05, send it manually if you want it in 20.11.2.

> 
> Thanks
> Qi
> 
> >
> > Best Regards,
> > Xueming
> >
> > > -----Original Message-----
> > > From: stable <stable-bounces@dpdk.org> On Behalf Of Qi Zhang
> > > Sent: Friday, June 11, 2021 9:44 AM
> > > To: bluca@debian.org
> > > Cc: vitaliy.zakharchenko@intel.com; arjun.anantharam@intel.com;
> > > stable@dpdk.org; Qi Zhang <qi.z.zhang@intel.com>; Ngai-mint Kwan
> > > <ngai-mint.kwan@intel.com>
> > > Subject: [dpdk-stable] [DPDK 20.11] net/iavf: fix error handling for
> > > unsupported promisc config
> > >
> > > [ upstream commit 308f75b5c9cc5ca3e972dbc84375bdee353c3156 ] [
> > > upstream commit 0c35eecfe8b54bbdf59c30a803404acfdcc4f7eb ]
> > >
> > > 1. The VIRTCHNL_STATUS_ERR_NOT_SUPPORTED should be esculated to
> > upper
> > >    with -ENOTSUP in iavf_execute_vf_cmd.
> > > 2. fix error code check in iavf_config_promisc 3. change
> > > vf->cmd_ret_val
> > from unsigned to signed as it will compare with
> > >    negtive value.
> > >
> > > Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
> > > Signed-off-by: Ngai-mint Kwan <ngai-mint.kwan@intel.com>
> > > ---
> > >  drivers/net/iavf/iavf.h       |  2 +-
> > >  drivers/net/iavf/iavf_vchnl.c | 16 +++++++++++-----
> > >  2 files changed, 12 insertions(+), 6 deletions(-)
> > >
> > > diff --git a/drivers/net/iavf/iavf.h b/drivers/net/iavf/iavf.h index
> > > 0196f74721..4bcb407b20 100644
> > > --- a/drivers/net/iavf/iavf.h
> > > +++ b/drivers/net/iavf/iavf.h
> > > @@ -136,7 +136,7 @@ struct iavf_info {
> > >  	uint64_t supported_rxdid;
> > >  	uint8_t *proto_xtr; /* proto xtr type for all queues */
> > >  	volatile enum virtchnl_ops pend_cmd; /* pending command not
> > > finished
> > */
> > > -	uint32_t cmd_retval; /* return value of the cmd response from PF */
> > > +	int cmd_retval; /* return value of the cmd response from PF */
> > >  	uint8_t *aq_resp; /* buffer to store the adminq response from PF
> > > */
> > >
> > >  	/* Event from pf */
> > > diff --git a/drivers/net/iavf/iavf_vchnl.c
> > > b/drivers/net/iavf/iavf_vchnl.c index 3d52a8c402..219245d040 100644
> > > --- a/drivers/net/iavf/iavf_vchnl.c
> > > +++ b/drivers/net/iavf/iavf_vchnl.c
> > > @@ -228,12 +228,18 @@ iavf_execute_vf_cmd(struct iavf_adapter
> > *adapter, struct iavf_cmd_info *args)
> > >  			/* If don't read msg or read sys event, continue */
> > >  		} while (i++ < MAX_TRY_TIMES);
> > >  		/* If there's no response is received, clear command */
> > > -		if (i >= MAX_TRY_TIMES  ||
> > > -		    vf->cmd_retval != VIRTCHNL_STATUS_SUCCESS) {
> > > -			err = -1;
> > > +		if (i >= MAX_TRY_TIMES) {
> > >  			PMD_DRV_LOG(ERR, "No response or return failure (%d)"
> > >  				    " for cmd %d", vf->cmd_retval, args->ops);
> > >  			_clear_cmd(vf);
> > > +			err = -EIO;
> > > +		} else if (vf->cmd_retval ==
> > VIRTCHNL_STATUS_ERR_NOT_SUPPORTED) {
> > > +			PMD_DRV_LOG(ERR, "Cmd %d not supported", args->ops);
> > > +			err = -ENOTSUP;
> > > +		} else if (vf->cmd_retval != VIRTCHNL_STATUS_SUCCESS) {
> > > +			PMD_DRV_LOG(ERR, "Return failure %d for cmd %d",
> > > +				    vf->cmd_retval, args->ops);
> > > +			err = -EINVAL;
> > >  		}
> > >  		break;
> > >  	}
> > > @@ -1099,8 +1105,8 @@ iavf_config_promisc(struct iavf_adapter *adapter,
> > >  		PMD_DRV_LOG(ERR,
> > >  			    "fail to execute command
> > CONFIG_PROMISCUOUS_MODE");
> > >
> > > -		if (err == IAVF_NOT_SUPPORTED)
> > > -			return -ENOTSUP;
> > > +		if (err == -ENOTSUP)
> > > +			return err;
> > >
> > >  		return -EAGAIN;
> > >  	}
> > > --
> > > 2.26.2