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Message-ID: <4380faf1-9911-4188-9982-a7060e143394@lunn.ch>
Date: Sat, 30 Mar 2024 15:55:42 +0100
From: Andrew Lunn <andrew@...n.ch>
To: Naveen Mamindlapalli <naveenm@...vell.com>
Cc: Oleksij Rempel <o.rempel@...gutronix.de>,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Florian Fainelli <f.fainelli@...il.com>,
Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
Vladimir Oltean <olteanv@...il.com>,
Woojung Huh <woojung.huh@...rochip.com>,
Arun Ramadoss <arun.ramadoss@...rochip.com>,
"kernel@...gutronix.de" <kernel@...gutronix.de>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
"UNGLinuxDriver@...rochip.com" <UNGLinuxDriver@...rochip.com>,
David Ahern <dsahern@...nel.org>, Simon Horman <horms@...nel.org>,
Willem de Bruijn <willemb@...gle.com>,
Søren Andersen <san@...v.dk>
Subject: Re: [PATCH net-next v1 5/9] net: dsa: microchip: add support for
different DCB app configurations
On Fri, Mar 29, 2024 at 09:29:32AM +0000, Naveen Mamindlapalli wrote:
>
> > +int ksz_init_global_dscp_map(struct ksz_device *dev) {
> > + int reg, per_reg, ret, dscp;
> > + u8 data = 0;
> > + u8 mask;
> > +
> > + /* On KSZ9xxx variants, DSCP remapping is disabled by default.
> > + * Enable to have, predictable and reproducible behavior across
> > + * different devices.
> > + */
> > + if (!is_ksz8(dev)) {
> > + ret = ksz_rmw8(dev, KSZ9477_REG_SW_MAC_TOS_CTRL,
> > + KSZ9477_SW_TOS_DSCP_REMAP,
> > + KSZ9477_SW_TOS_DSCP_REMAP);
> > + if (ret)
> > + return ret;
> > + }
> > +
> > + ksz_get_dscp_prio_reg(dev, ®, &per_reg, &mask);
> > +
> > + for (dscp = 0; dscp < DSCP_MAX; dscp++) {
> > + int ipv, shift;
> > +
> > + /* Map DSCP to Traffic Type, which is corresponding to the
> > + * Internal Priority Value (IPV) in the switch.
> > + */
> > + if (!is_ksz8(dev)) {
> > + ipv = ietf_dscp_to_ieee8021q_tt(dscp);
> > + } else {
> > + ipv =
> > ieee8021q_tt_to_tc(ietf_dscp_to_ieee8021q_tt(dscp),
> > + dev->info->num_tx_queues);
> > + }
>
> No need for braces for single statement.
Please trim the email when replying. It is very easy to miss comments
when it is 99% quoted text with a couple of one-liners mixed in.
Andrew
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