netdev - Re: MT7530 bug, forward broadcast and unknown frames to the correct CPU port

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Message-ID: <20230501100930.eemwoxmwh7oenhvb@skbuf>
Date:   Mon, 1 May 2023 13:09:30 +0300
From:   Vladimir Oltean <olteanv@...il.com>
To:     Arınç ÜNAL <arinc.unal@...nc9.com>
Cc:     DENG Qingfang <dqfext@...il.com>, Greg Ungerer <gerg@...nel.org>,
        Daniel Golle <daniel@...rotopia.org>,
        Richard van Schagen <richard@...terhints.com>,
        Richard van Schagen <vschagen@...com>,
        Frank Wunderlich <frank-w@...lic-files.de>,
        mithat.guner@...ont.com, erkin.bozoglu@...ont.com,
        bartel.eerdekens@...stell8.be, netdev <netdev@...r.kernel.org>
Subject: Re: MT7530 bug, forward broadcast and unknown frames to the correct
 CPU port

On Sat, Apr 29, 2023 at 10:52:12PM +0300, Arınç ÜNAL wrote:
> On 29.04.2023 21:56, Vladimir Oltean wrote:
> > On Sat, Apr 29, 2023 at 09:39:41PM +0300, Arınç ÜNAL wrote:
> > > Are you fine with the preferred port patch now that I mentioned port 6
> > > would be preferred for MT7531BE since it's got 2.5G whilst port 5 has
> > > got 1G? Would you like to submit it or leave it to me to send the diff
> > > above and this?
> > 
> > No, please tell me: what real life difference would it make to a user
> > who doesn't care to analyze which CPU port is used?
> 
> They would get 2.5 Gbps download/upload bandwidth in total to the CPU,
> instead of 1 Gbps. 3 computers connected to 3 switch ports would each get
> 833 Mbps download/upload speed to/from the CPU instead of 333 Mbps.

In theory, theory and practice are the same. In practice, they aren't.
Are you able to obtain 833 Mbps concurrently over 3 user ports?