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Annotation of Net2/arch/vax/if/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 and use in source and binary forms, with or without
                      9:  * modification, are permitted provided that the following conditions
                     10:  * are met:
                     11:  * 1. Redistributions of source code must retain the above copyright
                     12:  *    notice, this list of conditions and the following disclaimer.
                     13:  * 2. Redistributions in binary form must reproduce the above copyright
                     14:  *    notice, this list of conditions and the following disclaimer in the
                     15:  *    documentation and/or other materials provided with the distribution.
                     16:  * 3. All advertising materials mentioning features or use of this software
                     17:  *    must display the following acknowledgement:
                     18:  *     This product includes software developed by the University of
                     19:  *     California, Berkeley and its contributors.
                     20:  * 4. Neither the name of the University nor the names of its contributors
                     21:  *    may be used to endorse or promote products derived from this software
                     22:  *    without specific prior written permission.
                     23:  *
                     24:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     25:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     26:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     27:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     28:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     29:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     30:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     31:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     32:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     33:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     34:  * SUCH DAMAGE.
                     35:  *
                     36:  *     @(#)raw_hy.c    7.4 (Berkeley) 12/16/90
                     37:  */
                     38: 
                     39: /*
                     40:  * 4.3 BSD Unix kernel - NSC HYPERchannel support
                     41:  *
                     42:  * $Header: raw_hy.c,v 3.1 84/02/15 04:27:44 steveg Exp $
                     43:  * $Locker:  $
                     44:  *
                     45:  * Copyright (c) 1984, Tektronix Inc.
                     46:  * All Rights Reserved
                     47:  *
                     48:  */
                     49: 
                     50: #include "hy.h"
                     51: #if NHY > 0
                     52: 
                     53: #include "sys/param.h"
                     54: #include "sys/mbuf.h"
                     55: #include "sys/socket.h"
                     56: #include "sys/protosw.h"
                     57: #include "sys/socketvar.h"
                     58: #include "sys/errno.h"
                     59: 
                     60: #include "net/if.h"
                     61: #include "net/route.h"
                     62: #include "net/raw_cb.h"
                     63: 
                     64: #include "netinet/in.h"
                     65: #include "netinet/in_systm.h"
                     66: #include "netinet/in_var.h"
                     67: #include "if_hy.h"
                     68: 
                     69: /*
                     70:  * Raw interface to HYPERchannel.
                     71:  */
                     72: 
                     73: /*
                     74:  * Generate HYPERchannel leader and pass packet to hyoutput.
                     75:  * The user must create a skeletal leader in order to
                     76:  * communicate message type, message subtype, etc.
                     77:  * We don't really check the header supplied by the user.
                     78:  */
                     79: rhy_output(m, so)
                     80:        register struct mbuf *m;
                     81:        struct socket *so;
                     82: {
                     83:        int error = 0;
                     84:        register struct sockaddr_in *sin;
                     85:        register struct rawcb *rp = sotorawcb(so);
                     86:        struct in_ifaddr *ia;
                     87: 
                     88:        /*
                     89:         * Verify user has supplied necessary space
                     90:         * for the header.
                     91:         */
                     92:        if ((m->m_off > MMAXOFF || m->m_len < sizeof(struct hym_hdr)) &&
                     93:            (m = m_pullup(m, sizeof(struct hym_hdr))) == 0) {
                     94:                error = EMSGSIZE;       /* XXX */
                     95:                goto bad;
                     96:        }
                     97: 
                     98:        sin = (struct sockaddr_in *)&rp->rcb_faddr;
                     99:        /* no routing here */
                    100:        ia = in_iaonnetof(in_netof(sin->sin_addr));
                    101:        if (ia)
                    102:                return (hyoutput(ia->ia_ifp, m, (struct sockaddr *)sin));
                    103:        error = ENETUNREACH;
                    104: bad:
                    105:        m_freem(m);
                    106:        return (error);
                    107: }
                    108: #endif

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