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Diffstat (limited to 'include/linux/can/dev.h')
-rw-r--r--include/linux/can/dev.h16
1 files changed, 16 insertions, 0 deletions
diff --git a/include/linux/can/dev.h b/include/linux/can/dev.h
index 58f5431a5559..982ba245eb41 100644
--- a/include/linux/can/dev.h
+++ b/include/linux/can/dev.h
@@ -152,6 +152,22 @@ 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,