netdev - Re: [net-next PATCH v2 9/9] octeontx2-pf: Add representors for sdp MAC

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Date: Thu, 25 Apr 2024 06:09:03 +0000
From: Sunil Kovvuri Goutham <sgoutham@...vell.com>
To: Jiri Pirko <jiri@...nulli.us>, Geethasowjanya Akula <gakula@...vell.com>
CC: "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "kuba@...nel.org" <kuba@...nel.org>,
        "davem@...emloft.net"
	<davem@...emloft.net>,
        "pabeni@...hat.com" <pabeni@...hat.com>,
        "edumazet@...gle.com" <edumazet@...gle.com>,
        Subbaraya Sundeep Bhatta
	<sbhatta@...vell.com>,
        Hariprasad Kelam <hkelam@...vell.com>
Subject: Re: [net-next PATCH v2 9/9] octeontx2-pf: Add representors for sdp
 MAC



> -----Original Message-----
> From: Jiri Pirko <jiri@...nulli.us>
> Sent: Tuesday, April 23, 2024 6:35 PM
> To: Geethasowjanya Akula <gakula@...vell.com>
> Cc: netdev@...r.kernel.org; linux-kernel@...r.kernel.org; kuba@...nel.org;
> davem@...emloft.net; pabeni@...hat.com; edumazet@...gle.com; Sunil
> Kovvuri Goutham <sgoutham@...vell.com>; Subbaraya Sundeep Bhatta
> <sbhatta@...vell.com>; Hariprasad Kelam <hkelam@...vell.com>
> Subject: [EXTERNAL] Re: [net-next PATCH v2 9/9] octeontx2-pf: Add
> representors for sdp MAC
> 
> Mon, Apr 22, 2024 at 11:54:01AM CEST, gakula@...vell.com wrote:
> >Current silicons support 2 types of MACs, SDP and
> 
> What's SDP? Care to elaborate a bit here?
> 
> 
> >RPM MAC.  This patch adds representors for SDP MAC interfaces.
> >

Hardware supports different types of MACs eg RPM, SDP, LBK. 
LBK is for internal Tx->Rx HW loopback path. RPM and SDP
MACs support ingress/egress pkt IO on interfaces with different
set of capabilities like interface modes. At the time of netdev driver
registration PF will seek MAC related information from Admin function driver
'drivers/net/ethernet/marvell/octeontx2/af' and sets up ingress/egress
queues etc such that pkt IO on the channels of these different MACs is possible.

Thanks,
Sunil.