struct sk_buff *__alloc_skb(unsigned int size, gfp_t priority, int flags,
int node);
+struct sk_buff *__build_skb(void *data, unsigned int frag_size);
struct sk_buff *build_skb(void *data, unsigned int frag_size);
static inline struct sk_buff *alloc_skb(unsigned int size,
gfp_t priority)