linux-kernel - Re: [ethernet/broadcom/bgmac]: Implement software multicast filter clear

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Message-ID: <CALkFLL+gBK0v8nG_fRTgqg44+E7caMeF=nNpiTnJLVQ2q=5Njg@mail.gmail.com>
Date: Sun, 20 Apr 2025 18:28:44 +0530
From: Ujwal Kundur <ujwal.kundur@...il.com>
To: Florian Fainelli <florian.fainelli@...adcom.com>
Cc: rafal@...ecki.pl, bcm-kernel-feedback-list@...adcom.com, 
	andrew+netdev@...n.ch, davem@...emloft.net, edumazet@...gle.com, 
	kuba@...nel.org, pabeni@...hat.com, netdev@...r.kernel.org, 
	linux-kernel@...r.kernel.org, shuah@...nel.org
Subject: Re: [ethernet/broadcom/bgmac]: Implement software multicast filter clear

Hello!

> Given that these controllers are always interfaced with either an
> integrated or an external Ethernet switch chip, the design was done
> assuming that the switch will be operated in managed mode and multicast
> filtering will be done on the switch side.

Thanks for the info, I wasn't aware of this. I infer that this is
relevant from your message and the codebase:
https://docs.kernel.org/networking/dsa/dsa.html

If I understand correctly, this TODO is basically a no-op because DSA
already implements `dsa_mc_add` / `dsa_mc_del`
for handling multicast addresses on the switch side.

I'll hop over to `bcnxt` as I see some TODOs there, or find something
easier to work with for starters. Thanks again.

--- Ujwal.