From: Marc Kleine-Budde <mkl@pengutronix.de>
To: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Cc: linux-can@vger.kernel.org, "Stefan Mätje" <Stefan.Maetje@esd.eu>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v4 5/7] can: netlink: add interface for CAN-FD Transmitter Delay Compensation (TDC)
Date: Sat, 14 Aug 2021 13:12:43 +0200 [thread overview]
Message-ID: <20210814111243.biquurwkyzmhmsad@pengutronix.de> (raw)
In-Reply-To: <20210814091750.73931-6-mailhol.vincent@wanadoo.fr>
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On 14.08.2021 18:17:48, Vincent Mailhol wrote:
[...]
> static int can_changelink(struct net_device *dev, struct nlattr *tb[],
> struct nlattr *data[],
> struct netlink_ext_ack *extack)
> {
> struct can_priv *priv = netdev_priv(dev);
> + u32 tdc_mask = 0;
> int err;
>
> /* We need synchronization with dev->stop() */
> @@ -107,6 +179,7 @@ static int can_changelink(struct net_device *dev, struct nlattr *tb[],
> struct can_ctrlmode *cm;
> u32 ctrlstatic;
> u32 maskedflags;
> + u32 tdc_flags;
>
> /* Do not allow changing controller mode while running */
> if (dev->flags & IFF_UP)
> @@ -138,7 +211,18 @@ static int can_changelink(struct net_device *dev, struct nlattr *tb[],
> dev->mtu = CAN_MTU;
> memset(&priv->data_bittiming, 0,
> sizeof(priv->data_bittiming));
> + memset(&priv->tdc, 0, sizeof(priv->tdc));
> + priv->ctrlmode &= ~CAN_CTRLMODE_TDC_MASK;
> }
> +
> + tdc_flags = cm->flags & CAN_CTRLMODE_TDC_MASK;
> + /* CAN_CTRLMODE_TDC_{AUTO,MANUAL} are mutually exclusive */
> + if (tdc_flags == CAN_CTRLMODE_TDC_MASK)
> + return -EOPNOTSUPP;
> + /* If one of CAN_CTRLMODE_TDC_* is set then TDC must be set */
> + if (tdc_flags && !data[IFLA_CAN_TDC])
> + return -EOPNOTSUPP;
These don't need information form the can_priv, right? So these checks
can be moved to can_validate()?
> + tdc_mask = cm->mask & CAN_CTRLMODE_TDC_MASK;
> }
Marc
--
Pengutronix e.K. | Marc Kleine-Budde |
Embedded Linux | https://www.pengutronix.de |
Vertretung West/Dortmund | Phone: +49-231-2826-924 |
Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
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next prev parent reply other threads:[~2021-08-14 11:12 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-14 9:17 [PATCH v4 0/7] add the netlink interface for CAN-FD Transmitter Delay Compensation (TDC) Vincent Mailhol
2021-08-14 9:17 ` [PATCH v4 1/7] can: netlink: allow user to turn off unsupported features Vincent Mailhol
2021-08-14 9:17 ` [PATCH v4 2/7] can: bittiming: allow TDC{V,O} to be zero and add can_tdc_const::tdc{v,o,f}_min Vincent Mailhol
2021-08-14 9:17 ` [PATCH v4 3/7] can: bittiming: change unit of TDC parameters to clock periods Vincent Mailhol
2021-08-14 9:17 ` [PATCH v4 4/7] can: dev: add can_tdc_get_relative_tdco() helper function Vincent Mailhol
2021-08-14 9:17 ` [PATCH v4 5/7] can: netlink: add interface for CAN-FD Transmitter Delay Compensation (TDC) Vincent Mailhol
2021-08-14 11:12 ` Marc Kleine-Budde [this message]
2021-08-15 3:38 ` Vincent MAILHOL
2021-08-14 9:17 ` [PATCH v4 6/7] can: netlink: add can_priv::do_get_auto_tdcv() to retrieve tdcv from device Vincent Mailhol
2021-08-14 9:17 ` [PATCH v4 7/7] can: etas_es58x: clean-up documentation of struct es58x_fd_tx_conf_msg Vincent Mailhol
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