Re: [PATCH v2 2/2] can: netlink: add interface for CAN-FD Transmitter Delay Compensation (TDC)

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On Wed. 16 Jun 2021 at 23:46, Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx> wrote:
> On 16.06.2021 23:43:35, Vincent MAILHOL wrote:
> > > Sounds good, I'm squashing this patch:
> > >
> > > | diff --git a/drivers/net/can/dev/netlink.c b/drivers/net/can/dev/netlink.c
> > > | index 6134bbf69c10..d48be574eae7 100644
> > > | --- a/drivers/net/can/dev/netlink.c
> > > | +++ b/drivers/net/can/dev/netlink.c
> > > | @@ -311,7 +311,7 @@ static size_t can_tdc_get_size(const struct net_device *dev)
> > > |         size += nla_total_size(sizeof(u32));            /* IFLA_CAN_TDCO_MAX */
> > > |         size += nla_total_size(sizeof(u32));            /* IFLA_CAN_TDCF_MAX */
> > > |
> > > | -       if (priv->tdc.tdco) {
> > > | +       if (can_tdc_is_enabled(priv)) {
> > > |                 size += nla_total_size(sizeof(u32));    /* IFLA_CAN_TDCV */
> > > |                 size += nla_total_size(sizeof(u32));    /* IFLA_CAN_TDCO */
> > > |                 size += nla_total_size(sizeof(u32));    /* IFLA_CAN_TDCF */
> > > | @@ -352,6 +352,7 @@ static size_t can_get_size(const struct net_device *dev)
> > > |                                        priv->data_bitrate_const_cnt);
> > > |         size += sizeof(priv->bitrate_max);                      /* IFLA_CAN_BITRATE_MAX */
> > > |         size += can_tdc_get_size(dev);                          /* IFLA_CAN_TDC */
> > > | +
> > > |         return size;
> > > |  }
> > > |
> > > | @@ -374,7 +375,7 @@ static int can_tdc_fill_info(struct sk_buff *skb, const struct net_device *dev)
> > > |             nla_put_u32(skb, IFLA_CAN_TDC_TDCF_MAX, tdc_const->tdcf_max))
> > > |                 goto err_cancel;
> > > |
> > > | -       if (priv->tdc.tdco)
> > > | +       if (can_tdc_is_enabled(priv)) {
> > > |                 if (nla_put_u32(skb, IFLA_CAN_TDC_TDCV, tdc->tdcv) ||
> > > |                     nla_put_u32(skb, IFLA_CAN_TDC_TDCO, tdc->tdco) ||
> > > |                     nla_put_u32(skb, IFLA_CAN_TDC_TDCF, tdc->tdcf))
> > > | diff --git a/include/linux/can/bittiming.h b/include/linux/can/bittiming.h
> > > | index 9de6e9053e34..b6d1db1e7258 100644
> > > | --- a/include/linux/can/bittiming.h
> > > | +++ b/include/linux/can/bittiming.h
> > > | @@ -83,6 +83,11 @@ struct can_tdc_const {
> > > |         u32 tdcf_max;
> > > |  };
> > > |
> > > | +static inline bool can_tdc_is_enabled(const struct can_priv *priv)
> >
> > Did you try to compile?
>
> Not before sending that mail :)
>
> > I am not sure if bittiming.h is able to see struct can_priv which is
> > defined in dev.h.
>
> Nope it doesn't, I moved the can_tdc_is_enabled() to
> include/linux/can/dev.h

Ack. It seems to be the only solution…

Moving forward, I will do one more round of tests and send the
patch for iproute2-next (warning, the RFC I sent last month has
some issues, if you wish to test it on your side, please wait).

I will also apply can_tdc_is_enabled() to the etas_es58x driver.

Could you push the recent changes on the testing branch of linux-can-next? It
would be really helpful for me!


Yours sincerely,
Vincent



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