netdev - Re: [PATCH net-next v3 1/4] enetc: Introduce basic PF and VF ENETC ethernet drivers

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Date:   Fri, 23 Nov 2018 22:29:15 -0800 (PST)
From:   David Miller <davem@...emloft.net>
To:     claudiu.manoil@....com
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        alexandru.marginean@....com, catalin.horghidan@....com
Subject: Re: [PATCH net-next v3 1/4] enetc: Introduce basic PF and VF ENETC
 ethernet drivers

From: Claudiu Manoil <claudiu.manoil@....com>
Date: Fri, 23 Nov 2018 12:46:00 +0200

> +static int enetc_poll(struct napi_struct *napi, int budget)
> +{
> +	struct enetc_int_vector
> +		*v = container_of(napi, struct enetc_int_vector, napi);
> +	bool complete = true;
> +	int work_done;
> +	int i;
> +
> +	for (i = 0; i < v->count_tx_rings; i++) {
> +		work_done = enetc_clean_tx_ring(&v->tx_ring[i], budget);
> +		if (work_done == budget)
> +			complete = false;
> +	}

You should not count TX completion processing as NAPI poll "work".
It is relatively "free" compared to RX packet processing.