linux-kernel - RE: [PATCH V3 net-next] net: fec: add XDP

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Date:   Tue, 8 Aug 2023 00:19:53 +0000
From:   Wei Fang <wei.fang@....com>
To:     Jakub Kicinski <kuba@...nel.org>
CC:     Jesper Dangaard Brouer <hawk@...nel.org>,
        Jesper Dangaard Brouer <jbrouer@...hat.com>,
        "brouer@...hat.com" <brouer@...hat.com>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "edumazet@...gle.com" <edumazet@...gle.com>,
        "pabeni@...hat.com" <pabeni@...hat.com>,
        Shenwei Wang <shenwei.wang@....com>,
        Clark Wang <xiaoning.wang@....com>,
        "ast@...nel.org" <ast@...nel.org>,
        "daniel@...earbox.net" <daniel@...earbox.net>,
        "john.fastabend@...il.com" <john.fastabend@...il.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        dl-linux-imx <linux-imx@....com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "bpf@...r.kernel.org" <bpf@...r.kernel.org>,
        Andrew Lunn <andrew@...n.ch>
Subject: RE: [PATCH V3 net-next] net: fec: add XDP_TX feature support

> On Mon, 7 Aug 2023 10:30:34 +0000 Wei Fang wrote:
> > ./xdp_rxq_info --dev eth0 --action XDP_TX Running XDP on dev:eth0
> > (ifindex:2) action:XDP_TX options:swapmac
> > XDP stats       CPU     pps         issue-pps
> > XDP-RX CPU      0       259,102     0
> > XDP-RX CPU      total   259,102
> 
> > Result 2: dma_sync_len method
> > Running XDP on dev:eth0 (ifindex:2) action:XDP_TX options:swapmac
> > XDP stats       CPU     pps         issue-pps
> > XDP-RX CPU      0       258,254     0
> > XDP-RX CPU      total   258,254
> 
> Just to be clear are these number with xdp_return_frame() replaced with
> page_pool_put_page(pool, page, 0, true); ?
Yes, I used the page_pool_put_page() to instead of xdp_return_frame() when
I tried the "dma_sync_len" method.