netdev - Re: [net-next] bnx2x: Handle Rx and Tx together in NAPI

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Date:	Mon, 16 Nov 2009 02:41:30 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	B05799@...escale.com
Cc:	vladz@...adcom.com, netdev@...r.kernel.org, eilong@...adcom.com
Subject: Re: [net-next] bnx2x: Handle Rx and Tx together in NAPI

From: "Kumar Gopalpet-B05799" <B05799@...escale.com>
Date: Mon, 16 Nov 2009 16:02:04 +0530

> Can we actually introduce NAPI mechanism for cleaning TX ring ??

You really should if you can.

Preferably you should combine it with RX work in a shared NAPI context
(1 TX queue + 1 RX queue per NAPI context, for example), doing the TX
reclaim first in your ->poll() routine, before the RX processing,
because this TX reclaim provides freshly freed up SKBs for RX work
that generates responses (TCP ACKs, etc.)
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