Date: Sat, 22 Mar 2014 07:06:42 +0800 From: shiu michael <mshiu612@gmail.com> To: markus.gebert@hostpoint.ch, csforgeron@gmail.com Cc: freebsd-net@freebsd.org, jfvogel@gmail.com Subject: Re: 9.2 ixgbe tx queue hang (packets that exceed 65535bytes in length) Message-ID: <CAOg8pzfpF73udQuV4K%2BbwcwnsMFQbGmHfA3Qu5nM-JJ_x60=iw@mail.gmail.com>
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>Ok, so this isn't a TSO segment then, unless I don't understand how >the csum flags are used, which is quite possible. >Assuming that you printed this out in decimal: >4116->0x1014 >Looking in mbuf.h, 0x1014 is >CSUM_SCTP_VALID | CSUM_FRAGMENT | CSUM_UDP > >alternately, if 4116 is hex, then it is: >CSUM_TCP_IPV6 | CSUM_IP_CHECKED | CSUM_FRAGMENT | CSUM_UDP > >either way, it doesn't appear to be a TCP TSO? >(But you said that disabling TSO fixed the problem, so colour me >confused by this.;-) Maybe Christopher is printing the csum from the last mbuf chain ?? Just 2 cents, Mike
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