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