diff options
Diffstat (limited to 'usr.sbin/ppp/mbuf.h')
| -rw-r--r-- | usr.sbin/ppp/mbuf.h | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/usr.sbin/ppp/mbuf.h b/usr.sbin/ppp/mbuf.h index 4ee8e40..2517eda 100644 --- a/usr.sbin/ppp/mbuf.h +++ b/usr.sbin/ppp/mbuf.h @@ -15,19 +15,19 @@ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. * - * $Id: mbuf.h,v 1.12 1998/05/21 21:46:49 brian Exp $ + * $Id: mbuf.h,v 1.13 1998/08/07 18:42:50 brian Exp $ * * TODO: */ struct mbuf { - u_char *base; /* pointer to top of buffer space */ - short size; /* size allocated from base */ - short offset; /* offset to start position */ + short size; /* size allocated (excluding header) */ + short offset; /* offset from header end to start position */ short cnt; /* available byte count in buffer */ - short type; + short type; /* MB_* below */ struct mbuf *next; /* link to next mbuf */ struct mbuf *pnext; /* link to next packet */ + /* buffer space is malloc()d directly after the header */ }; struct mqueue { @@ -36,7 +36,8 @@ struct mqueue { int qlen; }; -#define MBUF_CTOP(bp) (bp->base + bp->offset) +#define MBUF_CTOP(bp) ((u_char *)((bp)+1) + (bp)->offset) +#define CONST_MBUF_CTOP(bp) ((const u_char *)((bp)+1) + (bp)->offset) #define MB_ASYNC 1 #define MB_FSM 2 |
