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Subject: Re: 9.2 ixgbe tx queue hang (packets that exceed 65535bytes in length)
From: shiu michael <mshiu612@gmail.com>
To: markus.gebert@hostpoint.ch, csforgeron@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