linux-kernel - Re: [PATCH net-next 2/5] net: dsa: realtek: rtl8365mb: remove port

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CAJq09z6TDWSFZCFHTSevao4-fsiVavUYtmBFVttMhYqsOobg9g@mail.gmail.com>
Date:   Tue, 7 Jun 2022 10:34:38 -0300
From:   Luiz Angelo Daros de Luca <luizluca@...il.com>
To:     Alvin Šipraga <alvin@...s.dk>
Cc:     Linus Walleij <linus.walleij@...aro.org>,
        Alvin Šipraga <alsi@...g-olufsen.dk>,
        Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Russell King <linux@...linux.org.uk>,
        "open list:NETWORKING DRIVERS" <netdev@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH net-next 2/5] net: dsa: realtek: rtl8365mb: remove
 port_mask private data member

> There is no real need for this variable: the line change interrupt mask
> is sufficiently masked out when getting linkup_ind and linkdown_ind in
> the interrupt handler.

Yes, it was currently useless as well as priv->num_ports (it is a constant).

I wonder if we should really create irq threads for unused ports
(!dsa_is_unused_port()). Some models have only 2+1 ports and we are
always dealing with 10/11 ports.
If dsa_is_unused_port() is too costly to be used everywhere, we could
keep port_mask and iterate over it (for_each_set_bit) instead of from
0 til priv->num_ports-1.

Regards,

Luiz