From: <Daniel.Machon@microchip.com>
To: <petrm@nvidia.com>
Cc: <netdev@vger.kernel.org>, <davem@davemloft.net>,
<maxime.chevallier@bootlin.com>, <thomas.petazzoni@bootlin.com>,
<edumazet@google.com>, <kuba@kernel.org>, <pabeni@redhat.com>,
<Lars.Povlsen@microchip.com>, <Steen.Hegelund@microchip.com>,
<UNGLinuxDriver@microchip.com>, <joe@perches.com>,
<linux@armlinux.org.uk>, <Horatiu.Vultur@microchip.com>,
<Julia.Lawall@inria.fr>, <vladimir.oltean@nxp.com>,
<linux-kernel@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH net-next v4 2/6] net: dcb: add new apptrust attribute
Date: Mon, 31 Oct 2022 12:45:55 +0000 [thread overview]
Message-ID: <Y1/F5n+geZHAitoW@DEN-LT-70577> (raw)
In-Reply-To: <87k04gw54m.fsf@nvidia.com>
> > + if (ieee[DCB_ATTR_DCB_APP_TRUST_TABLE]) {
> > + u8 selectors[IEEE_8021QAZ_APP_SEL_MAX + 1] = {0};
> > + struct nlattr *attr;
> > + int nselectors = 0;
> > + u8 selector;
> > + int rem, i;
> > +
> > + if (!ops->dcbnl_setapptrust) {
> > + err = -EOPNOTSUPP;
> > + goto err;
> > + }
> > +
> > + nla_for_each_nested(attr, ieee[DCB_ATTR_DCB_APP_TRUST_TABLE],
> > + rem) {
> > + if (nla_type(attr) != DCB_ATTR_DCB_APP_TRUST ||
> > + nla_len(attr) != 1 ||
> > + nselectors >= sizeof(selectors)) {
> > + err = -EINVAL;
> > + goto err;
> > + }
> > +
> > + selector = nla_get_u8(attr);
> > + switch (selector) {
> > + case IEEE_8021QAZ_APP_SEL_ETHERTYPE:
> > + case IEEE_8021QAZ_APP_SEL_STREAM:
> > + case IEEE_8021QAZ_APP_SEL_DGRAM:
> > + case IEEE_8021QAZ_APP_SEL_ANY:
> > + case IEEE_8021QAZ_APP_SEL_DSCP:
> > + case DCB_APP_SEL_PCP:
>
> This assumes that the range of DCB attributes will never overlap with
> the range of IEEE attributes. Wasn't the original reason for introducing
> the DCB nest to not have to make this assumption?
>
> I.e. now that we split DCB and IEEE attributes in the APP_TABLE
> attribute, shouldn't it be done here as well?
Hmm, doesn't hurt to do strict checking here as well. We can even get rid
of the DCB_ATTR_DCB_APP_TRUST attr and just pass DCB_ATTR_DCB_APP and
DCB_ATTR_IEEE_APP? Then use the same functions to do the checking.
/ Daniel
next prev parent reply other threads:[~2022-10-31 12:46 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-28 10:03 [PATCH net-next v4 0/6] Add new PCP and APPTRUST attributes to dcbnl Daniel Machon
2022-10-28 10:03 ` [PATCH net-next v4 1/6] net: dcb: add new pcp selector to app object Daniel Machon
2022-10-31 11:13 ` Petr Machata
2022-10-31 12:39 ` Daniel.Machon
2022-10-28 10:03 ` [PATCH net-next v4 2/6] net: dcb: add new apptrust attribute Daniel Machon
2022-10-31 12:24 ` Petr Machata
2022-10-31 12:45 ` Daniel.Machon [this message]
2022-10-31 16:24 ` Petr Machata
2022-10-28 10:03 ` [PATCH net-next v4 3/6] net: microchip: sparx5: add support for offloading pcp table Daniel Machon
2022-10-28 10:03 ` [PATCH net-next v4 4/6] net: microchip: sparx5: add support for apptrust Daniel Machon
2022-10-28 10:03 ` [PATCH net-next v4 5/6] net: microchip: sparx5: add support for offloading dscp table Daniel Machon
2022-10-28 10:03 ` [PATCH net-next v4 6/6] net: microchip: sparx5: add support for offloading default prio Daniel Machon
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