Date: Sat, 8 Mar 2003 09:19:06 +1100 From: Peter Jeremy <peterjeremy@optushome.com.au> To: Terry Lambert <tlambert2@mindspring.com> Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: Realtek Message-ID: <20030307221905.GA98940@cirb503493.alcatel.com.au> In-Reply-To: <3E68E859.EAB20A71@mindspring.com> References: <20030306230206.70461.qmail@web14913.mail.yahoo.com> <200303062136.44471.wes@softweyr.com> <3E68E859.EAB20A71@mindspring.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On Fri, Mar 07, 2003 at 10:43:37AM -0800, Terry Lambert wrote: >And TCP/IP headers are not an even multiple of the alignment boundary >(4 bytes, actually). So every packet the card DMA's in has to be >copied so that access to the TCP packet contents are aligned. Last time I looked at TCP/IP, the header lengths were all defined in 4-byte units so they must be a multiple of 4 bytes by definition. Maybe you are referring to the Ethernet header - which is 14 bytes long (18 bytes in a VLAN trunk). Peter To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20030307221905.GA98940>