From: Michael Richardson <mcr+ietf@sandelman.ca>
To: Dave Taht <dave.taht@gmail.com>
Cc: =?UTF-8?B?VG9rZSBIw7hpbGFuZC1Kw7hyZ2Vuc2Vu?= <toke@toke.dk>,
"Cake List" <cake@lists.bufferbloat.net>,
ECN-Sane <ecn-sane@lists.bufferbloat.net>
Subject: Re: [Cake] [Ecn-sane] l4s kernel submission
Date: Sat, 16 Oct 2021 19:57:03 -0400 [thread overview]
Message-ID: <8788.1634428623@localhost> (raw)
In-Reply-To: <CAA93jw7kwCc9HmfA7X4BzSCS+9UgngXj31d3gb7Aw=XQtQHZMA@mail.gmail.com>
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Dave Taht <dave.taht@gmail.com> wrote:
> What happens when a GSO packet is marked? Do all the packets get the
> marking, or just the first?
Having done no work in this area for over a decade.... I think that the GSO
marking is in the skb (which is a Linux-ism, obviously), which goes down into
the device-specific driver, who then loads the single packet into the device
queue, and marks the packet for GSO in a device-specific way in the ring
descriptor.
The device does the Segment Offload. There is no marking relevant in the
packet itself. There aren't multiple skb's for the packet.
So I think that the answer is "mu"
--
Michael Richardson <mcr+IETF@sandelman.ca> . o O ( IPv6 IøT consulting )
Sandelman Software Works Inc, Ottawa and Worldwide
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next prev parent reply other threads:[~2021-10-16 23:57 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-14 20:06 [Cake] " Dave Taht
2021-10-14 20:31 ` Sebastian Moeller
2021-10-14 21:27 ` Dave Taht
2021-10-14 21:44 ` [Cake] [Ecn-sane] " Toke Høiland-Jørgensen
2021-10-14 22:00 ` Dave Taht
2021-10-14 22:10 ` Toke Høiland-Jørgensen
2021-10-14 22:17 ` Dave Taht
2021-10-16 8:04 ` Jonathan Morton
2021-10-16 8:38 ` Sebastian Moeller
2021-10-16 8:54 ` Jonathan Morton
2021-10-16 10:29 ` Sebastian Moeller
2021-10-16 12:49 ` Sebastian Moeller
2021-10-16 16:58 ` Rodney W. Grimes
2021-10-16 21:01 ` Dave Taht
2021-10-16 23:57 ` Michael Richardson [this message]
2021-10-18 13:02 ` Toke Høiland-Jørgensen
2021-10-19 2:45 ` Dave Taht
2021-10-19 11:19 ` Toke Høiland-Jørgensen
2021-10-19 13:30 ` Dave Taht
2021-10-19 13:34 ` Sebastian Moeller
2021-10-19 14:16 ` Dave Taht
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