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

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Date:   Thu, 25 Jun 2020 20:06:11 -0700
From:   Joe Perches <joe@...ches.com>
To:     Jeff Kirsher <jeffrey.t.kirsher@...el.com>, davem@...emloft.net
Cc:     Alice Michael <alice.michael@...el.com>, netdev@...r.kernel.org,
        nhorman@...hat.com, sassmann@...hat.com,
        Alan Brady <alan.brady@...el.com>,
        Phani Burra <phani.r.burra@...el.com>,
        Joshua Hay <joshua.a.hay@...el.com>,
        Madhu Chittim <madhu.chittim@...el.com>,
        Pavan Kumar Linga <pavan.kumar.linga@...el.com>,
        Donald Skidmore <donald.c.skidmore@...el.com>,
        Jesse Brandeburg <jesse.brandeburg@...el.com>,
        Sridhar Samudrala <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;
> +
> +	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

> +
> +	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?

> +	enum iecm_status err = 0;
> +	int i;
> +
> +	for (i = 0; i < IECM_RX_MAX_PTYPE; i++)
> +		rx_ptype_lkup[i] = iecm_rx_ptype_lkup[0];
> +
> +	for (i = 0; i < IECM_RX_SUPP_PTYPE; i++) {
> +		int j = ptype_list[i];
> +
> +		rx_ptype_lkup[j] = iecm_rx_ptype_lkup[i];
> +		rx_ptype_lkup[j].ptype = ptype_list[i];
> +	};
> +
> +	return err;
>  }