linux-kernel - RE: [EXTERNAL] Re: [PATCH net v8 2/4] octeon_ep: update tx/rx stats locally for persistence

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Message-ID:
 <PH0PR18MB4734EDD37FBEC7E82A5C2077C71B2@PH0PR18MB4734.namprd18.prod.outlook.com>
Date: Fri, 17 Jan 2025 05:49:43 +0000
From: Shinas Rasheed <srasheed@...vell.com>
To: Jakub Kicinski <kuba@...nel.org>,
        Larysa Zaremba
	<larysa.zaremba@...el.com>
CC: "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Haseeb Gani
	<hgani@...vell.com>, Sathesh B Edara <sedara@...vell.com>,
        Vimlesh Kumar
	<vimleshk@...vell.com>,
        "thaller@...hat.com" <thaller@...hat.com>,
        "wizhao@...hat.com" <wizhao@...hat.com>,
        "kheib@...hat.com"
	<kheib@...hat.com>,
        "konguyen@...hat.com" <konguyen@...hat.com>,
        "horms@...nel.org" <horms@...nel.org>,
        "einstein.xue@...axg.com"
	<einstein.xue@...axg.com>,
        Veerasenareddy Burru <vburru@...vell.com>,
        Andrew
 Lunn <andrew+netdev@...n.ch>,
        "David S. Miller" <davem@...emloft.net>,
        Eric
 Dumazet <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>
Subject: RE: [EXTERNAL] Re: [PATCH net v8 2/4] octeon_ep: update tx/rx stats
 locally for persistence



> -----Original Message-----
> From: Shinas Rasheed
> Sent: Friday, January 17, 2025 9:42 AM
> To: Jakub Kicinski <kuba@...nel.org>; Larysa Zaremba
> <larysa.zaremba@...el.com>
> Cc: netdev@...r.kernel.org; linux-kernel@...r.kernel.org; Haseeb Gani
> <hgani@...vell.com>; Sathesh B Edara <sedara@...vell.com>; Vimlesh
> Kumar <vimleshk@...vell.com>; thaller@...hat.com; wizhao@...hat.com;
> kheib@...hat.com; konguyen@...hat.com; horms@...nel.org;
> einstein.xue@...axg.com; Veerasenareddy Burru <vburru@...vell.com>;
> Andrew Lunn <andrew+netdev@...n.ch>; David S. Miller
> <davem@...emloft.net>; Eric Dumazet <edumazet@...gle.com>; Paolo
> Abeni <pabeni@...hat.com>
> Subject: RE: [EXTERNAL] Re: [PATCH net v8 2/4] octeon_ep: update tx/rx stats
> locally for persistence
> 
> Hi Jakub, Larysa
> 
> > -----Original Message-----
> > From: Jakub Kicinski <kuba@...nel.org>
> > Sent: Friday, January 17, 2025 5:57 AM
> > To: Larysa Zaremba <larysa.zaremba@...el.com>
> > Cc: Shinas Rasheed <srasheed@...vell.com>; netdev@...r.kernel.org;
> linux-
> > kernel@...r.kernel.org; Haseeb Gani <hgani@...vell.com>; Sathesh B
> Edara
> > <sedara@...vell.com>; Vimlesh Kumar <vimleshk@...vell.com>;
> > thaller@...hat.com; wizhao@...hat.com; kheib@...hat.com;
> > konguyen@...hat.com; horms@...nel.org; einstein.xue@...axg.com;
> > Veerasenareddy Burru <vburru@...vell.com>; Andrew Lunn
> > <andrew+netdev@...n.ch>; David S. Miller <davem@...emloft.net>; Eric
> > Dumazet <edumazet@...gle.com>; Paolo Abeni <pabeni@...hat.com>
> > Subject: [EXTERNAL] Re: [PATCH net v8 2/4] octeon_ep: update tx/rx stats
> > locally for persistence
> >
> > On Thu, 16 Jan 2025 16:26:18 +0100 Larysa Zaremba wrote:
> > > > +	for (q = 0; q < oct->num_ioq_stats; q++) {
> > > > +		tx_packets += oct->stats_iq[q].instr_completed;
> > > > +		tx_bytes += oct->stats_iq[q].bytes_sent;
> > > > +		rx_packets += oct->stats_oq[q].packets;
> > > > +		rx_bytes += oct->stats_oq[q].bytes;
> > >
> > > Correct me if I am wrong, but the interface-wide statistics should not
> change
> > > when changing queue number. In such case maybe it would be a good
> idea
> > to
> > > always iterate over all OCTEP_MAX_QUEUES queues when calculating the
> > stats.
> >
> > Good catch!
> 
> The queues which are iterated over here refer to the hardware queues, and it
> is in fact iterating over all the queues.
> Can you please clarify more?
> 
> Thanks

Okay, I think I understand
> 
> > --
> > pw-bot: cr