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Annotation of 43BSDReno/sys/vaxif/raw_hy.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1988 Regents of the University of California.
                      3:  * All rights reserved.
                      4:  *
                      5:  * This code is derived from software contributed to Berkeley by
                      6:  * Tektronix Inc.
                      7:  *
                      8:  * Redistribution is only permitted until one year after the first shipment
                      9:  * of 4.4BSD by the Regents.  Otherwise, redistribution and use in source and
                     10:  * binary forms are permitted provided that: (1) source distributions retain
                     11:  * this entire copyright notice and comment, and (2) distributions including
                     12:  * binaries display the following acknowledgement:  This product includes
                     13:  * software developed by the University of California, Berkeley and its
                     14:  * contributors'' in the documentation or other materials provided with the
                     15:  * distribution and in all advertising materials mentioning features or use
                     16:  * of this software.  Neither the name of the University nor the names of
                     17:  * its contributors may be used to endorse or promote products derived from
                     18:  * this software without specific prior written permission.
                     19:  * THIS SOFTWARE IS PROVIDED AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
                     20:  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
                     21:  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     22:  *
                     23:  *     @(#)raw_hy.c    7.3 (Berkeley) 6/28/90
                     24:  */
                     25: 
                     26: /*
                     27:  * 4.3 BSD Unix kernel - NSC HYPERchannel support
                     28:  *
                     29:  * $Header: raw_hy.c,v 3.1 84/02/15 04:27:44 steveg Exp $
                     30:  * $Locker:  $
                     31:  *
                     32:  * Copyright (c) 1984, Tektronix Inc.
                     33:  * All Rights Reserved
                     34:  *
                     35:  */
                     36: 
                     37: #include "hy.h"
                     38: #if NHY > 0
                     39: 
                     40: #include "param.h"
                     41: #include "mbuf.h"
                     42: #include "socket.h"
                     43: #include "protosw.h"
                     44: #include "socketvar.h"
                     45: #include "errno.h"
                     46: 
                     47: #include "../net/if.h"
                     48: #include "../net/route.h"
                     49: #include "../net/raw_cb.h"
                     50: 
                     51: #include "../netinet/in.h"
                     52: #include "../netinet/in_systm.h"
                     53: #include "../netinet/in_var.h"
                     54: #include "if_hy.h"
                     55: 
                     56: /*
                     57:  * Raw interface to HYPERchannel.
                     58:  */
                     59: 
                     60: /*
                     61:  * Generate HYPERchannel leader and pass packet to hyoutput.
                     62:  * The user must create a skeletal leader in order to
                     63:  * communicate message type, message subtype, etc.
                     64:  * We don't really check the header supplied by the user.
                     65:  */
                     66: rhy_output(m, so)
                     67:        register struct mbuf *m;
                     68:        struct socket *so;
                     69: {
                     70:        int error = 0;
                     71:        register struct sockaddr_in *sin;
                     72:        register struct rawcb *rp = sotorawcb(so);
                     73:        struct in_ifaddr *ia;
                     74: 
                     75:        /*
                     76:         * Verify user has supplied necessary space
                     77:         * for the header.
                     78:         */
                     79:        if ((m->m_off > MMAXOFF || m->m_len < sizeof(struct hym_hdr)) &&
                     80:            (m = m_pullup(m, sizeof(struct hym_hdr))) == 0) {
                     81:                error = EMSGSIZE;       /* XXX */
                     82:                goto bad;
                     83:        }
                     84: 
                     85:        sin = (struct sockaddr_in *)&rp->rcb_faddr;
                     86:        /* no routing here */
                     87:        ia = in_iaonnetof(in_netof(sin->sin_addr));
                     88:        if (ia)
                     89:                return (hyoutput(ia->ia_ifp, m, (struct sockaddr *)sin));
                     90:        error = ENETUNREACH;
                     91: bad:
                     92:        m_freem(m);
                     93:        return (error);
                     94: }
                     95: #endif

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