#ifndef __PBUF_H__
#define __PBUF_H__
#include <sys/mbuf.h>
enum pbuf_type {
PBUF_TYPE_ZOMBIE = 0,
PBUF_TYPE_MBUF,
PBUF_TYPE_MEMORY
};
enum pbuf_action {
PBUF_ACTION_DESTROY
};
#define PBUF_ACTION_RV_SUCCESS 0
#define PBUF_ACTION_RV_FAILURE (-1)
struct pbuf_memory {
uint8_t *pm_buffer; u_int pm_buffer_len; u_int pm_offset; u_int pm_len; uint32_t pm_csum_flags;
uint32_t pm_csum_data;
uint8_t pm_proto;
uint8_t pm_flowsrc;
uint32_t pm_flowid;
uint32_t pm_flags;
struct pf_mtag pm_pftag;
int (*pm_action)(struct pbuf_memory *, enum pbuf_action);
void *pm_action_cookie;
};
typedef struct pbuf {
enum pbuf_type pb_type;
union {
struct mbuf *pbu_mbuf;
struct pbuf_memory pbu_memory;
} pb_u;
#define pb_mbuf pb_u.pbu_mbuf
#define pb_memory pb_u.pbu_memory
void *pb_data;
uint32_t pb_packet_len;
uint32_t pb_contig_len;
uint32_t *pb_csum_flags;
uint32_t *pb_csum_data;
uint8_t *pb_proto;
uint8_t *pb_flowsrc;
uint32_t *pb_flowid;
uint32_t *pb_flags;
struct pf_mtag *pb_pftag;
struct ifnet *pb_ifp;
struct pbuf *pb_next;
} pbuf_t;
#define pbuf_is_valid(pb) (!((pb) == NULL || (pb)->pb_type == PBUF_TYPE_ZOMBIE))
void pbuf_init_mbuf(pbuf_t *, struct mbuf *, struct ifnet *);
void pbuf_init_memory(pbuf_t *, const struct pbuf_memory *,
struct ifnet *);
void pbuf_destroy(pbuf_t *);
void pbuf_sync(pbuf_t *);
struct mbuf *pbuf_to_mbuf(pbuf_t *, boolean_t);
struct mbuf *pbuf_clone_to_mbuf(pbuf_t *);
void * pbuf_ensure_contig(pbuf_t *, size_t);
void * pbuf_ensure_writable(pbuf_t *, size_t);
void * pbuf_resize_segment(pbuf_t *, int off, int olen, int nlen);
void * pbuf_contig_segment(pbuf_t *, int off, int len);
void pbuf_copy_data(pbuf_t *, int, int, void *);
void pbuf_copy_back(pbuf_t *, int, int, void *);
uint16_t pbuf_inet_cksum(const pbuf_t *, uint32_t, uint32_t, uint32_t);
uint16_t pbuf_inet6_cksum(const pbuf_t *, uint32_t, uint32_t, uint32_t);
mbuf_svc_class_t pbuf_get_service_class(const pbuf_t *);
#endif