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From: Vincent MAILHOL <>
To: Marc Kleine-Budde <>
Cc: linux-can <>,
Subject: Re: [PATCH 2/2] can: dev: can_free_echo_skb(): extend to return can frame length
Date: Sat, 20 Mar 2021 17:03:02 +0900	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

On Fri. 19 mars 2021 at 23:27, Marc Kleine-Budde <> wrote:
> In order to implement byte queue limits (bql) in CAN drivers, the
> length of the CAN frame needs to be passed into the networking stack
> even if the transmission failed for some reason.
> To avoid to calculate this length twice, extend can_free_echo_skb() to
> return that value. Convert all users of this function, too.
> This patch is the natural extension of commit:
> | 9420e1d495e2 ("can: dev: can_get_echo_skb(): extend to return can
> |                frame length")
> Signed-off-by: Marc Kleine-Budde <>
> diff --git a/drivers/net/can/usb/etas_es58x/es58x_core.c b/drivers/net/can/usb/etas_es58x/es58x_core.c
> index 95d0a02e408b..724ba72237dc 100644
> --- a/drivers/net/can/usb/etas_es58x/es58x_core.c
> +++ b/drivers/net/can/usb/etas_es58x/es58x_core.c
> @@ -314,7 +314,7 @@ static void es58x_can_free_echo_skb_tail(struct net_device *netdev)
>         struct sk_buff *skb = priv->can.echo_skb[priv->tx_tail & fifo_mask];
>         netdev_completed_queue(netdev, 1, can_skb_prv(skb)->frame_len);
> -       can_free_echo_skb(netdev, priv->tx_tail & fifo_mask);
> +       can_free_echo_skb(netdev, priv->tx_tail & fifo_mask, NULL);

Do you already have the etas_es58x driver in can-next/testing?
Or were you working on the wrong branch?
Could you push the last version of can-next/testing? It would be easier for me.

Yours sincerely,

  reply	other threads:[~2021-03-20 11:14 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-19 14:26 [PATCH 0/2] let can_free_echo_skb() return can frame length Marc Kleine-Budde
2021-03-19 14:26 ` [PATCH 1/2] can: skb: can_free_echo_skb(): don't crash the kernel if can_priv::echo_skb is accessed out of bounds Marc Kleine-Budde
2021-03-19 14:27 ` [PATCH 2/2] can: dev: can_free_echo_skb(): extend to return can frame length Marc Kleine-Budde
2021-03-20  8:03   ` Vincent MAILHOL [this message]
2021-03-20  8:37     ` Marc Kleine-Budde

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