linux-kernel - [patch] forcedeth: improve NAPI logic

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Message-ID: <20070402115650.GA1703@elte.hu>
Date:	Mon, 2 Apr 2007 13:56:50 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Ayaz Abdulla <aabdulla@...dia.com>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Ayaz Abdulla <aabdulla@...dia.com>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: [patch] forcedeth: improve NAPI logic

From: Ingo Molnar <mingo@...e.hu>
Subject: [patch] forcedeth.c: improve NAPI handler

another forcedeth.c thing: i noticed that its NAPI handler does not do 
tx-ring processing. The patch below implements this - tested on 
DESC_VER_2 hardware, with CONFIG_FORCEDETH_NAPI=y.

Signed-off-by: Ingo Molnar <mingo@...e.hu>

Index: linux/drivers/net/forcedeth.c
===================================================================
--- linux.orig/drivers/net/forcedeth.c
+++ linux/drivers/net/forcedeth.c
@@ -3118,9 +3118,17 @@ static int nv_napi_poll(struct net_devic
 	int retcode;
 
 	if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
+		spin_lock_irqsave(&np->lock, flags);
+		nv_tx_done(dev);
+		spin_unlock_irqrestore(&np->lock, flags);
+
 		pkts = nv_rx_process(dev, limit);
 		retcode = nv_alloc_rx(dev);
 	} else {
+		spin_lock_irqsave(&np->lock, flags);
+		nv_tx_done_optimized(dev, np->tx_ring_size);
+		spin_unlock_irqrestore(&np->lock, flags);
+
 		pkts = nv_rx_process_optimized(dev, limit);
 		retcode = nv_alloc_rx_optimized(dev);
 	}
-
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