Subject: Re: bge(4) tcp4csum problem -- driver problem or chip problem???
To: Brian Buhrow <email@example.com>
From: Jason Thorpe <firstname.lastname@example.org>
Date: 12/19/2006 09:23:47
On Dec 19, 2006, at 9:01 AM, Brian Buhrow wrote:
> Hello. During my tests, the only variable I changed was the tcp4csum
> value with ifconfig on the bge(4) interface. Ip4csum and udp4csum
> enabled during all tests, and remain so on this production machine. I
> didn't think to try disabling ip4csum while leaving tcp4csum
> enabled. Are
> these settings not hierarchical? That is, if you enable tcp4csum,
> are you
> not, by implication, also enableing ip4csum checking?
No. The IP header checksum and the TCP header+payload checksum are