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#ifndef _PKTBUFF_H_
#define _PKTBUFF_H_
struct pkt_buff;
struct pkt_buff *pktb_alloc(int family, void *data, size_t len, size_t extra);
void pktb_free(struct pkt_buff *pktb);
uint8_t *pktb_data(struct pkt_buff *pktb);
uint32_t pktb_len(struct pkt_buff *pktb);
void pktb_push(struct pkt_buff *pktb, unsigned int len);
void pktb_pull(struct pkt_buff *pktb, unsigned int len);
void pktb_put(struct pkt_buff *pktb, unsigned int len);
void pktb_trim(struct pkt_buff *pktb, unsigned int len);
unsigned int pktb_tailroom(struct pkt_buff *pktb);
uint8_t *pktb_mac_header(struct pkt_buff *pktb);
uint8_t *pktb_network_header(struct pkt_buff *pktb);
uint8_t *pktb_transport_header(struct pkt_buff *pktb);
#endif
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