can: rework skb reserved data handling
Added accessor and skb_reserve helpers for struct can_skb_priv.
Removed pointless skb_headroom() check.
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
CC: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/can/skb.h b/include/linux/can/skb.h
index 4b0f24d..2f0543f 100644
--- a/include/linux/can/skb.h
+++ b/include/linux/can/skb.h
@@ -32,4 +32,14 @@
struct can_frame cf[0];
};
+static inline struct can_skb_priv *can_skb_prv(struct sk_buff *skb)
+{
+ return (struct can_skb_priv *)(skb->head);
+}
+
+static inline void can_skb_reserve(struct sk_buff *skb)
+{
+ skb_reserve(skb, sizeof(struct can_skb_priv));
+}
+
#endif /* CAN_SKB_H */