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Annotation of researchv9/sys/h/inet/mbuf.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * mbuf emulation.
        !             3:  */
        !             4: 
        !             5: #define mbuf           block
        !             6: #define m_next         next
        !             7: #define mtod(m, type)  ((type) (m->rptr))
        !             8: #define m_get(x1, x2)  bp_get()
        !             9: #define m_free(m)      freeb(m)
        !            10: #define m_freem(m)     bp_free(m)
        !            11: #define m_pullup       bp_pullup
        !            12: #define m_adj          bp_adj
        !            13: #define dtom(x)                bp_dtom((struct block *) x)
        !            14: #define m_copy         bp_copy
        !            15: 
        !            16: #define BLEN(bp) ((bp)->wptr - (bp)->rptr)
        !            17: #define BSZ(bp) ((bp)->lim - (bp)->base)
        !            18: #define MAXBLEN        64
        !            19: 
        !            20: #define MGET(m, x, y)  ((m) = m_get(x, y))
        !            21: 
        !            22: #ifdef KERNEL
        !            23: extern struct block *bp_dtom(), *bp_copy();
        !            24: extern struct block *bp_get();
        !            25: #endif
        !            26: 
        !            27: #include "sparam.h"
        !            28: #define NBLOCK (NBLKBIG+NBLK64+NBLK16+NBLK4)
        !            29: extern struct block cblock[];
        !            30: 
        !            31: #ifdef IN_PARANOID
        !            32: #define BLOCKCHK(bp)\
        !            33:        if(bp < cblock || cblock >= &cblock[NBLOCK])\
        !            34:                panic("bp_check bad bp");\
        !            35:        if(bp->base == 0 || bp->lim == 0)\
        !            36:                panic("bp_check 0");\
        !            37:        if(bp->rptr >= bp->lim || bp->rptr < bp->base)\
        !            38:                panic("bp_check rptr");\
        !            39:        if(bp->wptr > bp->lim || bp->wptr < bp->base)\
        !            40:                panic("bp_check wptr");\
        !            41:        if(bp->rptr > bp->wptr)\
        !            42:                panic("bp_check rptr > wptr")
        !            43: #define MCHECK(bp) bp_check(bp)
        !            44: #else
        !            45: #define BLOCKCHK(bp)
        !            46: #define MCHECK(bp)
        !            47: #endif IN_PARANOID

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