netdev - RE: [EXT] Re: [PATCH 1/1] net: fec: add initial XDP support

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Date:   Wed, 5 Oct 2022 12:40:08 +0000
From:   Shenwei Wang <shenwei.wang@....com>
To:     Jesper Dangaard Brouer <jbrouer@...hat.com>,
        Andrew Lunn <andrew@...n.ch>
CC:     "brouer@...hat.com" <brouer@...hat.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Jesper Dangaard Brouer <hawk@...nel.org>,
        John Fastabend <john.fastabend@...il.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "imx@...ts.linux.dev" <imx@...ts.linux.dev>,
        Magnus Karlsson <magnus.karlsson@...il.com>,
        Björn Töpel <bjorn@...nel.org>,
        Ilias Apalodimas <ilias.apalodimas@...aro.org>
Subject: RE: [EXT] Re: [PATCH 1/1] net: fec: add initial XDP support

Hi Jesper,

Here is the summary of "xdp_rxq_info" testing.

              skb_mark_for_recycle           page_pool_release_page

             Native        SKB-Mode           Native          SKB-Mode
XDP_DROP     460K           220K              460K             102K
XDP_PASS     80K            113K              60K              62K


The following are the testing log.

Thanks,
Shenwei

### skb_mark_for_recycle solution ###

./xdp_rxq_info --dev eth0 --act XDP_DROP --read

Running XDP on dev:eth0 (ifindex:2) action:XDP_DROP options:read
XDP stats       CPU     pps         issue-pps
XDP-RX CPU      0       466,553     0
XDP-RX CPU      total   466,553

./xdp_rxq_info -S --dev eth0 --act XDP_DROP --read

Running XDP on dev:eth0 (ifindex:2) action:XDP_DROP options:read
XDP stats       CPU     pps         issue-pps
XDP-RX CPU      0       226,272     0
XDP-RX CPU      total   226,272

./xdp_rxq_info --dev eth0 --act XDP_PASS --read

Running XDP on dev:eth0 (ifindex:2) action:XDP_PASS options:read
XDP stats       CPU     pps         issue-pps
XDP-RX CPU      0       80,518      0
XDP-RX CPU      total   80,518

./xdp_rxq_info -S --dev eth0 --act XDP_PASS --read

Running XDP on dev:eth0 (ifindex:2) action:XDP_PASS options:read
XDP stats       CPU     pps         issue-pps
XDP-RX CPU      0       113,681     0
XDP-RX CPU      total   113,681


### page_pool_release_page solution ###

./xdp_rxq_info --dev eth0 --act XDP_DROP --read

Running XDP on dev:eth0 (ifindex:2) action:XDP_DROP options:read
XDP stats       CPU     pps         issue-pps
XDP-RX CPU      0       463,145     0
XDP-RX CPU      total   463,145

./xdp_rxq_info -S --dev eth0 --act XDP_DROP --read

Running XDP on dev:eth0 (ifindex:2) action:XDP_DROP options:read
XDP stats       CPU     pps         issue-pps
XDP-RX CPU      0       104,443     0
XDP-RX CPU      total   104,443

./xdp_rxq_info --dev eth0 --act XDP_PASS --read

Running XDP on dev:eth0 (ifindex:2) action:XDP_PASS options:read
XDP stats       CPU     pps         issue-pps
XDP-RX CPU      0       60,539      0
XDP-RX CPU      total   60,539

./xdp_rxq_info -S --dev eth0 --act XDP_PASS --read

Running XDP on dev:eth0 (ifindex:2) action:XDP_PASS options:read
XDP stats       CPU     pps         issue-pps
XDP-RX CPU      0       62,566      0
XDP-RX CPU      total   62,566

> -----Original Message-----
> From: Shenwei Wang
> Sent: Tuesday, October 4, 2022 8:34 AM
> To: Jesper Dangaard Brouer <jbrouer@...hat.com>; Andrew Lunn
> <andrew@...n.ch>
> Cc: brouer@...hat.com; David S. Miller <davem@...emloft.net>; Eric Dumazet
> <edumazet@...gle.com>; Jakub Kicinski <kuba@...nel.org>; Paolo Abeni
> <pabeni@...hat.com>; Alexei Starovoitov <ast@...nel.org>; Daniel Borkmann
> <daniel@...earbox.net>; Jesper Dangaard Brouer <hawk@...nel.org>; John
> Fastabend <john.fastabend@...il.com>; netdev@...r.kernel.org; linux-
> kernel@...r.kernel.org; imx@...ts.linux.dev; Magnus Karlsson
> <magnus.karlsson@...il.com>; Björn Töpel <bjorn@...nel.org>; Ilias
> Apalodimas <ilias.apalodimas@...aro.org>
> Subject: RE: [EXT] Re: [PATCH 1/1] net: fec: add initial XDP support
> 
> 
> 
> > -----Original Message-----
> > From: Shenwei Wang
> > Sent: Tuesday, October 4, 2022 8:13 AM
> > To: Jesper Dangaard Brouer <jbrouer@...hat.com>; Andrew Lunn
> ...
> > I haven't tested xdp_rxq_info yet, and will have a try sometime later today.
> > However, for the XDP_DROP test, I did try xdp2 test case, and the
> > testing result looks reasonable. The performance of Native mode is
> > much higher than skb- mode.
> >
> > # xdp2 eth0
> >  proto 0:     475362 pkt/s
> >
> > # xdp2 -S eth0             (page_pool_release_page solution)
> >  proto 17:     71999 pkt/s
> >
> > # xdp2 -S eth0             (skb_mark_for_recycle solution)
> >  proto 17:     72228 pkt/s
> >
> 
> Correction for xdp2 -S eth0	(skb_mark_for_recycle solution)
> proto 0:          0 pkt/s
> proto 17:     122473 pkt/s
> 
> Thanks,
> Shenwei