netdev - RE: [net-next v3 07/15] iecm: Implement virtchnl commands

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Date:   Fri, 26 Jun 2020 17:51:34 +0000
From:   "Brady, Alan" <alan.brady@...el.com>
To:     Joe Perches <joe@...ches.com>,
        "Kirsher, Jeffrey T" <jeffrey.t.kirsher@...el.com>,
        "davem@...emloft.net" <davem@...emloft.net>
CC:     "Michael, Alice" <alice.michael@...el.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "nhorman@...hat.com" <nhorman@...hat.com>,
        "sassmann@...hat.com" <sassmann@...hat.com>,
        "Burra, Phani R" <phani.r.burra@...el.com>,
        "Hay, Joshua A" <joshua.a.hay@...el.com>,
        "Chittim, Madhu" <madhu.chittim@...el.com>,
        "Linga, Pavan Kumar" <pavan.kumar.linga@...el.com>,
        "Skidmore, Donald C" <donald.c.skidmore@...el.com>,
        "Brandeburg, Jesse" <jesse.brandeburg@...el.com>,
        "Samudrala, Sridhar" <sridhar.samudrala@...el.com>
Subject: RE: [net-next v3 07/15] iecm: Implement virtchnl commands

> -----Original Message-----
> From: Joe Perches <joe@...ches.com>
> Sent: Thursday, June 25, 2020 8:06 PM
> To: Kirsher, Jeffrey T <jeffrey.t.kirsher@...el.com>; davem@...emloft.net
> Cc: Michael, Alice <alice.michael@...el.com>; netdev@...r.kernel.org;
> nhorman@...hat.com; sassmann@...hat.com; Brady, Alan
> <alan.brady@...el.com>; Burra, Phani R <phani.r.burra@...el.com>; Hay,
> Joshua A <joshua.a.hay@...el.com>; Chittim, Madhu
> <madhu.chittim@...el.com>; Linga, Pavan Kumar
> <pavan.kumar.linga@...el.com>; Skidmore, Donald C
> <donald.c.skidmore@...el.com>; Brandeburg, Jesse
> <jesse.brandeburg@...el.com>; Samudrala, Sridhar
> <sridhar.samudrala@...el.com>
> Subject: Re: [net-next v3 07/15] iecm: Implement virtchnl commands
> 
> On Thu, 2020-06-25 at 19:07 -0700, Jeff Kirsher wrote:
> > From: Alice Michael <alice.michael@...el.com>
> >
> > Implement various virtchnl commands that enable communication with
> > hardware.
> []
> > diff --git a/drivers/net/ethernet/intel/iecm/iecm_virtchnl.c
> > b/drivers/net/ethernet/intel/iecm/iecm_virtchnl.c
> []
> > @@ -751,7 +1422,44 @@ iecm_send_add_queues_msg(struct iecm_vport
> > *vport, u16 num_tx_q,  enum iecm_status
> > iecm_send_get_stats_msg(struct iecm_vport *vport)  {
> > -	/* stub */
> > +	struct iecm_adapter *adapter = vport->adapter;
> > +	struct virtchnl_queue_select vqs;
> > +	enum iecm_status err;
> > +
> > +	/* Don't send get_stats message if one is pending or the
> > +	 * link is down
> > +	 */
> > +	if (test_bit(IECM_VC_GET_STATS, adapter->vc_state) ||
> > +	    adapter->state <= __IECM_DOWN)
> > +		return 0;
> > +
> > +	vqs.vsi_id = vport->vport_id;
> > +
> > +	err = iecm_send_mb_msg(adapter, VIRTCHNL_OP_GET_STATS,
> > +			       sizeof(vqs), (u8 *)&vqs);
> 
> rather clearer to just test and return err
> 
> 	if (err)
> 		return err;

Agreed, will fix.

> > +
> > +	if (!err)
> > +		err = iecm_wait_for_event(adapter, IECM_VC_GET_STATS,
> > +					  IECM_VC_GET_STATS_ERR);
> 
> unindent and add
> 
> 	if (err)
> 		return err;
> 
> so all the below is also unindented.
> It might also be clearer to use another temporary for vport->netstats
> 

Agreed will fix indent and add temp var.

> > +
> > +	if (!err) {
> > +		struct virtchnl_eth_stats *stats =
> > +			(struct virtchnl_eth_stats *)adapter->vc_msg;
> > +		vport->netstats.rx_packets = stats->rx_unicast +
> > +						 stats->rx_multicast +
> > +						 stats->rx_broadcast;
> > +		vport->netstats.tx_packets = stats->tx_unicast +
> > +						 stats->tx_multicast +
> > +						 stats->tx_broadcast;
> > +		vport->netstats.rx_bytes = stats->rx_bytes;
> > +		vport->netstats.tx_bytes = stats->tx_bytes;
> > +		vport->netstats.tx_errors = stats->tx_errors;
> > +		vport->netstats.rx_dropped = stats->rx_discards;
> > +		vport->netstats.tx_dropped = stats->tx_discards;
> > +		mutex_unlock(&adapter->vc_msg_lock);
> > +	}
> > +
> > +	return err;
> >  }
> 
> []
> 
> > @@ -801,7 +1670,24 @@ iecm_send_get_set_rss_key_msg(struct iecm_vport
> *vport, bool get)
> >   */
> >  enum iecm_status iecm_send_get_rx_ptype_msg(struct iecm_vport *vport)
> > {
> > -	/* stub */
> > +	struct iecm_rx_ptype_decoded *rx_ptype_lkup = vport->rx_ptype_lkup;
> > +	int ptype_list[IECM_RX_SUPP_PTYPE] = { 0, 1, 11, 12, 22, 23, 24, 25, 26,
> > +					      27, 28, 88, 89, 90, 91, 92, 93,
> > +					      94 };
> 
> static const?

Will fix.

Alan