Date: Wed, 21 Mar 2018 21:40:25 +0100 From: Vincenzo Maffione <v.maffione@gmail.com> To: Joe Buehler <aspam@cox.net> Cc: "freebsd-net@freebsd.org" <freebsd-net@freebsd.org> Subject: Re: netmap ixgbevf mtu Message-ID: <CA%2B_eA9hAQ78_i-T6v127%2B4akoDBR9aiKhsXfXUCKe=epVQdPMQ@mail.gmail.com> In-Reply-To: <5AB166DC.8060708@cox.net> References: <5AAC49BE.3030508@cox.net> <5AAC4A96.1040107@cox.net> <5AB01439.3090003@cox.net> <5AB166DC.8060708@cox.net>
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I see. Unfortunately this breaks the API, so I don't think we can accept it. We should probably sum up the fragment lengths, remember which one was the first descriptor and write the olinfo field when we process the last descriptor ... I hope this does not slow down the simpler case where NS_MOREFRAG is not used. In any, case we should move this discussion to the github, if possible (so that the issue gets tracked). Cheers, Vincenzo 2018-03-20 20:54 GMT+01:00 Joe Buehler <aspam@cox.net>: > Attached is a patch that allows fragmented TX with the ixgbevf driver. > > For the first TX buffer set the slot length to the full length of the > frame and make sure that the slot buffer is fully filled. For succeeding > slots just set the length to the amount of the buffer filled. > > Not intended as the perfect solution but it works fine for my situation. > > Joe Buehler > > -- Vincenzo Maffione
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