From: Vladimir Oltean <olteanv@gmail.com>
To: "Alvin Šipraga" <ALSI@bang-olufsen.dk>
Cc: "Alvin Šipraga" <alvin@pqrs.dk>,
"Linus Walleij" <linus.walleij@linaro.org>,
"Andrew Lunn" <andrew@lunn.ch>,
"Vivien Didelot" <vivien.didelot@gmail.com>,
"Florian Fainelli" <f.fainelli@gmail.com>,
"David S. Miller" <davem@davemloft.net>,
"Jakub Kicinski" <kuba@kernel.org>,
"Rob Herring" <robh+dt@kernel.org>,
"Heiner Kallweit" <hkallweit1@gmail.com>,
"Russell King" <linux@armlinux.org.uk>,
"Michael Rasmussen" <MIR@bang-olufsen.dk>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [RFC PATCH net-next 3/5] net: dsa: tag_rtl8_4: add realtek 8 byte protocol 4 tag
Date: Mon, 23 Aug 2021 02:45:16 +0300 [thread overview]
Message-ID: <20210822234516.pwlu4wk3s3pfzbmi@skbuf> (raw)
In-Reply-To: <0606e849-5a4e-08c9-fcd1-d4661c10a51c@bang-olufsen.dk>
On Sun, Aug 22, 2021 at 11:37:28PM +0000, Alvin Šipraga wrote:
> >>>> + skb->offload_fwd_mark = 1;
> >>>
> >>> At the very least, please use
> >>>
> >>> dsa_default_offload_fwd_mark(skb);
> >>>
> >>> which does the right thing when the port is not offloading the bridge.
> >>
> >> Sure. Can you elaborate on what you mean by "at the very least"? Can it
> >> be improved even further?
> >
> > The elaboration is right below. skb->offload_fwd_mark should be set to
> > zero for packets that have been forwarded only to the host (like packets
> > that have hit a trapping rule). I guess the switch will denote this
> > piece of info through the REASON code.
>
> Yes, I think it will be communicated in REASON too. I haven't gotten to
> deciphering the contents of this field since it has not been needed so
> far: the ports are fully isolated and all bridging is done in software.
In that case, setting skb->offload_fwd_mark to true is absolutely wrong,
since the bridge is told that no software forwarding should be done
between ports, as it was already done in hardware (see nbp_switchdev_allowed_egress).
I wonder how this has ever worked? Are you completely sure that bridging
is done in software?
next prev parent reply other threads:[~2021-08-22 23:45 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-22 19:31 [RFC PATCH net-next 0/5] net: dsa: add support for RTL8365MB-VC Alvin Šipraga
2021-08-22 19:31 ` [RFC PATCH net-next 1/5] net: dsa: realtek-smi: fix mdio_free bug on module unload Alvin Šipraga
2021-08-22 21:40 ` Andrew Lunn
2021-08-22 22:33 ` Alvin Šipraga
2021-08-22 23:16 ` Andrew Lunn
2021-08-27 22:06 ` Linus Walleij
2021-08-28 10:50 ` Alvin Šipraga
2021-08-22 21:54 ` Vladimir Oltean
2021-08-22 22:42 ` Alvin Šipraga
2021-08-22 23:10 ` Vladimir Oltean
2021-08-22 19:31 ` [RFC PATCH net-next 2/5] dt-bindings: net: dsa: realtek-smi: document new compatible rtl8365mb Alvin Šipraga
2021-08-22 21:44 ` Andrew Lunn
2021-08-23 10:15 ` Florian Fainelli
2021-08-24 16:51 ` Rob Herring
2021-08-27 22:08 ` Linus Walleij
2021-08-22 19:31 ` [RFC PATCH net-next 3/5] net: dsa: tag_rtl8_4: add realtek 8 byte protocol 4 tag Alvin Šipraga
2021-08-22 22:02 ` Andrew Lunn
2021-08-22 22:50 ` Alvin Šipraga
2021-08-22 23:14 ` Andrew Lunn
2021-08-22 23:27 ` Alvin Šipraga
2021-08-22 22:13 ` Vladimir Oltean
2021-08-22 23:11 ` Alvin Šipraga
2021-08-22 23:25 ` Vladimir Oltean
2021-08-22 23:37 ` Alvin Šipraga
2021-08-22 23:45 ` Vladimir Oltean [this message]
2021-08-23 0:28 ` Alvin Šipraga
2021-08-23 0:31 ` Vladimir Oltean
2021-08-22 19:31 ` [RFC PATCH net-next 4/5] net: dsa: realtek-smi: add rtl8365mb subdriver for RTL8365MB-VC Alvin Šipraga
2021-08-22 22:48 ` Vladimir Oltean
2021-08-22 23:56 ` Alvin Šipraga
2021-08-23 0:19 ` Vladimir Oltean
2021-08-23 1:22 ` Alvin Šipraga
2021-08-23 2:12 ` Vladimir Oltean
2021-08-23 10:06 ` Alvin Šipraga
2021-08-23 10:31 ` Vladimir Oltean
2021-08-23 10:54 ` Alvin Šipraga
2021-08-23 13:13 ` Andrew Lunn
2021-08-23 13:20 ` Alvin Šipraga
2021-08-27 22:24 ` Linus Walleij
2021-08-22 23:04 ` Andrew Lunn
2021-08-22 23:25 ` Alvin Šipraga
2021-08-23 1:14 ` Andrew Lunn
2021-08-23 10:08 ` Alvin Šipraga
2021-08-23 4:37 ` DENG Qingfang
2021-08-23 10:11 ` Alvin Šipraga
2021-08-22 19:31 ` [RFC PATCH net-next 5/5] net: phy: realtek: add support for RTL8365MB-VC internal PHYs Alvin Šipraga
2021-08-23 10:13 ` Florian Fainelli
2021-08-27 22:27 ` Linus Walleij
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