From: Jun Hu <hujun.work@gmail.com>
To: Jesper Dangaard Brouer <jbrouer@redhat.com>
Cc: "Toke Høiland-Jørgensen" <toke@redhat.com>,
"Konrad Zemek" <konrad@zemek.io>,
brouer@redhat.com, xdp-newbies@vger.kernel.org,
"xdp-hints@xdp-project.net" <xdp-hints@xdp-project.net>,
"Freysteinn Alfredsson" <Freysteinn.Alfredsson@kau.se>
Subject: Re: AF_XDP socket TX path interact with TC?
Date: Wed, 27 Oct 2021 08:48:58 -0700 [thread overview]
Message-ID: <CAEM4-kBiUPF67pnHo3O+7dC8yE8eSgiJ9ZOa4T1MwS-E+wmc6Q@mail.gmail.com> (raw)
In-Reply-To: <ee690d7f-322f-ab51-2c13-06919c10d3ad@redhat.com>
> What is your use-case for adding a TX-timestamp to the packet?
>
> --Jesper
my use case is rather simple, I want to use AF_XDP for traffic tester
type of application, essentially, this application generates testing
traffic, egress via NIC-1, goes into a DUT, and DUT forward the
traffic back into NIC-2, the application need to measure the DUT's
forwarding latency for each packet, so it needs to know the timestamp
of test traffic TX on NIC-1 and RX on NIC-2
+-----+
|---------------- | DUT |----------------|
| +-----+ |
| |
| +-------------------+ |
| <----- | | <---- |
+----------|NIC-1 NIC-2 |---------+
| |
+-------------------+
prev parent reply other threads:[~2021-10-27 15:49 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-21 22:41 AF_XDP socket TX path interact with TC? Jun Hu
2021-10-25 10:48 ` Toke Høiland-Jørgensen
2021-10-25 18:26 ` Jun Hu
2021-10-26 11:08 ` Konrad Zemek
2021-10-26 18:34 ` Jun Hu
2021-10-27 11:35 ` Toke Høiland-Jørgensen
2021-10-27 14:03 ` Jesper Dangaard Brouer
2021-10-27 15:48 ` Jun Hu [this message]
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