Commit cf5046b3 authored by Marc Kleine-Budde's avatar Marc Kleine-Budde

can: dev: let can_get_echo_skb() return dlc of CAN frame

can_get_echo_skb() is usually called in the TX complete handler.
The stats->tx_packets and stats->tx_bytes should be updated there, too.
This patch simplifies to figure out the size of the sent CAN frame.
Signed-off-by: default avatarMarc Kleine-Budde <mkl@pengutronix.de>
parent f84cbda0
......@@ -327,16 +327,24 @@ EXPORT_SYMBOL_GPL(can_put_echo_skb);
* is handled in the device driver. The driver must protect
* access to priv->echo_skb, if necessary.
*/
void can_get_echo_skb(struct net_device *dev, unsigned int idx)
unsigned int can_get_echo_skb(struct net_device *dev, unsigned int idx)
{
struct can_priv *priv = netdev_priv(dev);
BUG_ON(idx >= priv->echo_skb_max);
if (priv->echo_skb[idx]) {
struct sk_buff *skb = priv->echo_skb[idx];
struct can_frame *cf = (struct can_frame *)skb->data;
u8 dlc = cf->can_dlc;
netif_rx(priv->echo_skb[idx]);
priv->echo_skb[idx] = NULL;
return dlc;
}
return 0;
}
EXPORT_SYMBOL_GPL(can_get_echo_skb);
......
......@@ -92,7 +92,7 @@ void can_bus_off(struct net_device *dev);
void can_put_echo_skb(struct sk_buff *skb, struct net_device *dev,
unsigned int idx);
void can_get_echo_skb(struct net_device *dev, unsigned int idx);
unsigned int can_get_echo_skb(struct net_device *dev, unsigned int idx);
void can_free_echo_skb(struct net_device *dev, unsigned int idx);
struct sk_buff *alloc_can_skb(struct net_device *dev, struct can_frame **cf);
......
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