sb_hdr
extern void process_pkt(struct sb_hdr *, char *, int, int);
extern void cap_write(struct sb_hdr *, char *, int, int);
volatile struct sb_hdr *hdrp;
volatile struct sb_hdr nhdr, *nhdrp;
hdrp = (struct sb_hdr *)bp;
hdrp = (struct sb_hdr *)bp;
cap_write(struct sb_hdr *hdrp, char *pktp, int num __unused, int flags __unused)
struct sb_hdr nhdr;
struct sb_hdr nhdr;
*(struct sb_hdr *)ohdrp = nhdr;
process_pkt(struct sb_hdr *hdrp, char *pktp, int num, int flags)
#define SMALLEST_MESSAGE sizeof (struct sb_hdr) + _POINTER_ALIGNMENT
struct sb_hdr hp;