linux-kernel - Re: [PATCH net-next v2 4/6] net: microchip: sparx5: add support for apptrust

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Message-ID: <87lepxxrig.fsf@nvidia.com>
Date:   Mon, 3 Oct 2022 10:01:24 +0200
From:   Petr Machata <petrm@...dia.com>
To:     <Daniel.Machon@...rochip.com>
CC:     <petrm@...dia.com>, <netdev@...r.kernel.org>,
        <davem@...emloft.net>, <maxime.chevallier@...tlin.com>,
        <thomas.petazzoni@...tlin.com>, <edumazet@...gle.com>,
        <kuba@...nel.org>, <pabeni@...hat.com>,
        <Lars.Povlsen@...rochip.com>, <Steen.Hegelund@...rochip.com>,
        <UNGLinuxDriver@...rochip.com>, <joe@...ches.com>,
        <linux@...linux.org.uk>, <Horatiu.Vultur@...rochip.com>,
        <Julia.Lawall@...ia.fr>, <vladimir.oltean@....com>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH net-next v2 4/6] net: microchip: sparx5: add support for
 apptrust


<Daniel.Machon@...rochip.com> writes:

>> > Make use of set/getapptrust() to implement per-selector trust and trust
>> > order.
>> >
>> > Signed-off-by: Daniel Machon <daniel.machon@...rochip.com>
>> > ---
>> >  .../ethernet/microchip/sparx5/sparx5_dcb.c    | 116 ++++++++++++++++++
>> >  .../ethernet/microchip/sparx5/sparx5_main.h   |   3 +
>> >  .../ethernet/microchip/sparx5/sparx5_port.c   |   4 +-
>> >  .../ethernet/microchip/sparx5/sparx5_port.h   |   2 +
>> >  .../ethernet/microchip/sparx5/sparx5_qos.c    |   4 +
>> >  5 files changed, 127 insertions(+), 2 deletions(-)
>> >
>> > diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_dcb.c b/drivers/net/ethernet/microchip/sparx5/sparx5_dcb.c
>> > index db17c124dac8..10aeb422b1ae 100644
>> > --- a/drivers/net/ethernet/microchip/sparx5/sparx5_dcb.c
>> > +++ b/drivers/net/ethernet/microchip/sparx5/sparx5_dcb.c
>> > @@ -8,6 +8,22 @@
>> >
>> >  #include "sparx5_port.h"
>> >
>> > +static const struct sparx5_dcb_apptrust {
>> > +     u8 selectors[256];
>> > +     int nselectors;
>> > +     char *names;
>> 
>> I think this should be just "name".
>
> I dont think so. This is a str representation of all the selector values.
> "names" makes more sense to me.

But it just points to one name, doesn't it? The name of this apptrust
policy...

BTW, I think it should also be a const char *.

>> > +} *apptrust[SPX5_PORTS];
>> > +
>> > +/* Sparx5 supported apptrust configurations */
>> > +static const struct sparx5_dcb_apptrust apptrust_conf[4] = {
>> > +     /* Empty *must* be first */
>> > +     { { 0                         }, 0, "empty"    },
>> > +     { { IEEE_8021QAZ_APP_SEL_DSCP }, 1, "dscp"     },
>> > +     { { DCB_APP_SEL_PCP           }, 1, "pcp"      },
>> > +     { { IEEE_8021QAZ_APP_SEL_DSCP,
>> > +         DCB_APP_SEL_PCP           }, 2, "dscp pcp" },
>> > +};
>> > +