4 * Definitions for the CAN network socket buffer
6 * Copyright (C) 2012 Oliver Hartkopp <socketcan@hartkopp.net>
13 #include <linux/types.h>
14 #include <linux/can.h>
17 * The struct can_skb_priv is used to transport additional information along
18 * with the stored struct can(fd)_frame that can not be contained in existing
19 * struct sk_buff elements.
20 * N.B. that this information must not be modified in cloned CAN sk_buffs.
21 * To modify the CAN frame content or the struct can_skb_priv content
22 * skb_copy() needs to be used instead of skb_clone().
26 * struct can_skb_priv - private additional data inside CAN sk_buffs
27 * @ifindex: ifindex of the first interface the CAN frame appeared on
28 * @cf: align to the following CAN frame at skb->data
32 struct can_frame cf
[0];
35 static inline struct can_skb_priv
*can_skb_prv(struct sk_buff
*skb
)
37 return (struct can_skb_priv
*)(skb
->head
);
40 static inline void can_skb_reserve(struct sk_buff
*skb
)
42 skb_reserve(skb
, sizeof(struct can_skb_priv
));
45 #endif /* CAN_SKB_H */
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