diff options
Diffstat (limited to 'include/linux/can/dev.h')
| -rw-r--r-- | include/linux/can/dev.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/include/linux/can/dev.h b/include/linux/can/dev.h index c3e50e537e39..982ba245eb41 100644 --- a/include/linux/can/dev.h +++ b/include/linux/can/dev.h @@ -147,6 +147,27 @@ static inline u32 can_get_static_ctrlmode(struct can_priv *priv) return priv->ctrlmode & ~priv->ctrlmode_supported; } +static inline bool can_is_canxl_dev_mtu(unsigned int mtu) +{ + return (mtu >= CANXL_MIN_MTU && mtu <= CANXL_MAX_MTU); +} + +/* drop skb if it does not contain a valid CAN frame for sending */ +static inline bool can_dev_dropped_skb(struct net_device *dev, struct sk_buff *skb) +{ + struct can_priv *priv = netdev_priv(dev); + + if (priv->ctrlmode & CAN_CTRLMODE_LISTENONLY) { + netdev_info_once(dev, + "interface in listen only mode, dropping skb\n"); + kfree_skb(skb); + dev->stats.tx_dropped++; + return true; + } + + return can_dropped_invalid_skb(dev, skb); +} + void can_setup(struct net_device *dev); struct net_device *alloc_candev_mqs(int sizeof_priv, unsigned int echo_skb_max, |