netdev - Re: Information about napi_struct and net

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Message-ID: <20121027182207.GA12858@electric-eye.fr.zoreil.com>
Date:	Sat, 27 Oct 2012 20:22:07 +0200
From:	Francois Romieu <romieu@...zoreil.com>
To:	Javier Domingo <javierdo1@...il.com>
Cc:	Eric Dumazet <eric.dumazet@...il.com>, netdev@...r.kernel.org
Subject: Re: Information about napi_struct and net_device

Eric Dumazet <eric.dumazet@...il.com> :
[...]
> # grep -n napi drivers/net/ethernet/realtek/8139cp.c
> 327:	struct napi_struct	napi;
> 436:	napi_gro_receive(&cp->napi, skb);
> 468:static int cp_rx_poll(struct napi_struct *napi, int budget)
> 470:	struct cp_private *cp = container_of(napi, struct cp_private, napi);
> 566:		napi_gro_flush(napi, false);
> 568:		__napi_complete(napi);
> 605:		if (napi_schedule_prep(&cp->napi)) {
> 607:			__napi_schedule(&cp->napi);
> 1132:	napi_enable(&cp->napi);
> 1149:	napi_disable(&cp->napi);
> 1160:	napi_disable(&cp->napi);
> 1933:	netif_napi_add(dev, &cp->napi, cp_rx_poll, 16);

Not all drivers use napi_gro_receive/napi_gro_flush.

It could be worth comparing with drivers/net/ethernet/via/via-rhine.c (small)
or drivers/net/ethernet/broadcom/tg3.c (bigger).

-- 
Ueimor
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