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

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Message-ID:
 <AM5PR04MB313902042437FD2D89A7677A880BA@AM5PR04MB3139.eurprd04.prod.outlook.com>
Date: Wed, 2 Aug 2023 02:43:16 +0000
From: Wei Fang <wei.fang@....com>
To: Jakub Kicinski <kuba@...nel.org>
CC: "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>,
	"hawk@...nel.org" <hawk@...nel.org>, "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>
Subject: RE: [PATCH V3 net-next] net: fec: add XDP_TX feature support

> -----Original Message-----
> Subject: Re: [PATCH V3 net-next] net: fec: add XDP_TX feature support
> 
> On Mon, 31 Jul 2023 14:00:25 +0800 Wei Fang wrote:
> >  	case XDP_TX:
> > +		err = fec_enet_xdp_tx_xmit(fep->netdev, xdp);
> > +		if (err) {
> > +			ret = FEC_ENET_XDP_CONSUMED;
> > +			page = virt_to_head_page(xdp->data);
> > +			page_pool_put_page(rxq->page_pool, page, sync, true);
> 
> The error path should call trace_xdp_exception().

Thanks for your reminder, it made me realize that the error processing of
other XDP actions also needs to add exception tracing. I'll add the exception
tracing for XDP_TX in V4 patch, and add the tracing for other XDP actions in
a separate patch.