diff options
Diffstat (limited to 'sys/netiso/iso_chksum.c')
| -rw-r--r-- | sys/netiso/iso_chksum.c | 140 |
1 files changed, 5 insertions, 135 deletions
diff --git a/sys/netiso/iso_chksum.c b/sys/netiso/iso_chksum.c index f470f86f521b..b5b75a892c7a 100644 --- a/sys/netiso/iso_chksum.c +++ b/sys/netiso/iso_chksum.c @@ -31,7 +31,7 @@ * SUCH DAMAGE. * * from: @(#)iso_chksum.c 7.5 (Berkeley) 5/6/91 - * $Id: iso_chksum.c,v 1.3 1993/10/16 21:05:18 rgrimes Exp $ + * $Id: iso_chksum.c,v 1.5 1993/12/19 00:53:24 wollman Exp $ */ /*********************************************************** @@ -86,11 +86,11 @@ SOFTWARE. #include "param.h" #include "systm.h" #include "mbuf.h" -#endif ISO +#endif /* ISO */ #ifndef MNULL #define MNULL (struct mbuf *)0 -#endif MNULL +#endif /* MNULL */ /* * FUNCTION: iso_check_csum @@ -188,8 +188,8 @@ iso_gen_csum(m,n,l) register int c0=0, c1=0; register int i=0; int loc = n++, len=0; /* n is position, loc is offset */ - u_char *xloc; - u_char *yloc; + u_char *xloc = 0; + u_char *yloc = 0; int cum=0; /* cum == cumulative length */ IFDEBUG(D_CHKSUM) @@ -253,133 +253,3 @@ iso_gen_csum(m,n,l) ENDDEBUG } -struct mbuf * -m_append(head, m) - struct mbuf *head, *m; -{ - register struct mbuf *n; - - if (m == 0) - return head; - if (head == 0) - return m; - n = head; - while (n->m_next) - n = n->m_next; - n->m_next = m; - return head; -} -/* - * FUNCTION: m_datalen - * - * PURPOSE: returns length of the mbuf chain. - * used all over the iso code. - * - * RETURNS: integer - * - * SIDE EFFECTS: none - * - * NOTES: - */ - -int -m_datalen (morig) - struct mbuf *morig; -{ - int s = splimp(); - register struct mbuf *n=morig; - register int datalen = 0; - - if( morig == (struct mbuf *)0) - return 0; - for(;;) { - datalen += n->m_len; - if (n->m_next == (struct mbuf *)0 ) { - break; - } - n = n->m_next; - } - splx(s); - return datalen; -} - -int -m_compress(in, out) - register struct mbuf *in, **out; -{ - register int datalen = 0; - int s = splimp(); - - if( in->m_next == MNULL ) { - *out = in; - IFDEBUG(D_REQUEST) - printf("m_compress returning 0x%x: A\n", in->m_len); - ENDDEBUG - splx(s); - return in->m_len; - } - MGET((*out), M_DONTWAIT, MT_DATA); - if((*out) == MNULL) { - *out = in; - IFDEBUG(D_REQUEST) - printf("m_compress returning -1: B\n"); - ENDDEBUG - splx(s); - return -1; - } - (*out)->m_len = 0; - (*out)->m_act = MNULL; - - while (in) { - IFDEBUG(D_REQUEST) - printf("m_compress in 0x%x *out 0x%x\n", in, *out); - printf("m_compress in: len 0x%x, off 0x%x\n", in->m_len, in->m_data); - printf("m_compress *out: len 0x%x, off 0x%x\n", (*out)->m_len, - (*out)->m_data); - ENDDEBUG - if (in->m_flags & M_EXT) { - ASSERT(in->m_len == 0); - } - if ( in->m_len == 0) { - in = in->m_next; - continue; - } - if (((*out)->m_flags & M_EXT) == 0) { - int len; - - len = M_TRAILINGSPACE(*out); - len = MIN(len, in->m_len); - datalen += len; - - IFDEBUG(D_REQUEST) - printf("m_compress copying len %d\n", len); - ENDDEBUG - bcopy(mtod(in, caddr_t), mtod((*out), caddr_t) + (*out)->m_len, - (unsigned)len); - - (*out)->m_len += len; - in->m_len -= len; - continue; - } else { - /* (*out) is full */ - if(( (*out)->m_next = m_get(M_DONTWAIT, MT_DATA) ) == MNULL) { - m_freem(*out); - *out = in; - IFDEBUG(D_REQUEST) - printf("m_compress returning -1: B\n"); - ENDDEBUG - splx(s); - return -1; - } - (*out)->m_len = 0; - (*out)->m_act = MNULL; - *out = (*out)->m_next; - } - } - m_freem(in); - IFDEBUG(D_REQUEST) - printf("m_compress returning 0x%x: A\n", datalen); - ENDDEBUG - splx(s); - return datalen; -} |