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Date: Fri, 09 Jan 2009 23:08:17 -0800 (PST) From: David Miller <davem@...emloft.net> To: nbd@...nwrt.org Cc: netdev@...r.kernel.org, mb@...sch.de Subject: Re: [PATCH v2] b44: fix misalignment and wasted space in rx handling From: Felix Fietkau <nbd@...nwrt.org> Date: Fri, 09 Jan 2009 13:39:57 +0100 > Broadcom 4400 puts a header of configurable size (apparently needs > to be at least 28 bytes) in front of received packets. When handling > this, the previous code accidentally added the offset 30 *twice* for > the software and once for the hardware, thereby cancelling out the > IP alignment effect of the 30 byte padding and wasting an additional > 30 bytes of memory per packet. > > This patch fixes this problem and improves routing throughput by > about 30% on MIPS, where unaligned access is expensive. > > Signed-off-by: Felix Fietkau <nbd@...nwrt.org> Applied. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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