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Annotation of researchv8dc/sys/chaosld/chset.c, revision 1.1

1.1     ! root        1: /*
        !             2:  *             C H  S E T
        !             3:  *
        !             4:  * Chaosnet line discipline - routines to set various fields in a packet.
        !             5:  *
        !             6:  *
        !             7:  * (c) Copyright 1984  Nirvonics, Inc.
        !             8:  *
        !             9:  * Written by Kurt Gollhardt
        !            10:  * Last update Wed Oct 24 13:39:42 1984
        !            11:  *
        !            12:  * This software is the property of Nirvonics, Inc.
        !            13:  * All rights reserved.
        !            14:  *
        !            15:  */
        !            16: 
        !            17: #include "ch.h"
        !            18: #if NCH > 0
        !            19: #include "../h/param.h"
        !            20: #include "../h/systm.h"
        !            21: #include "../h/stream.h"
        !            22: #include "../h/conf.h"
        !            23: #include "../chaosld/types.h"
        !            24: #include "../chaosld/constants.h"
        !            25: #include "../chaosld/globals.h"
        !            26: 
        !            27: 
        !            28: /*
        !            29:  * Set (STS) status info in a packet, reflecting the current state
        !            30:  * of the connection.
        !            31:  */
        !            32: setsts(conn, pkt)
        !            33:      register struct connection    *conn;
        !            34:      register struct packet        *pkt;
        !            35: {
        !            36:      register struct block         *bp;
        !            37:      register struct sts_data      sts;
        !            38: 
        !            39:      free_pkdata(pkt);
        !            40:      pkt->pk_op = STSOP;
        !            41:      pkt->pk_ackn = conn->cn_racked = conn->cn_rread;
        !            42:      sts.sts_receipt = conn->cn_rlast;
        !            43:      sts.sts_rwsize = conn->cn_rwsize;
        !            44:      append_packet(pkt, &sts, sizeof(sts));
        !            45: }
        !            46: 
        !            47: 
        !            48: /*
        !            49:  * Set connection info fields in a packet.
        !            50:  * Many routines count on the fact that this clears pk_type and next.
        !            51:  */
        !            52: setconn(conn, pkt)
        !            53: register struct connection *conn;
        !            54: register struct packet *pkt;
        !            55: {
        !            56:        pkt->pk_daddr = conn->cn_faddr;
        !            57:        pkt->pk_didx = conn->cn_fidx;
        !            58:        pkt->pk_saddr = Chmyaddr;
        !            59:        pkt->pk_sidx = conn->cn_lidx;
        !            60:        pkt->pk_type = 0;
        !            61:        pkt->next = NOPKT;
        !            62:        pkt->pk_fc = 0;
        !            63: }
        !            64: 
        !            65: 
        !            66: /*
        !            67:  * Set acknowledge field of packet from connection.
        !            68:  */
        !            69: setack(conn, pkt)
        !            70:      struct connection   *conn;
        !            71:      struct packet       *pkt;
        !            72: {
        !            73:      pkt->pk_ackn = conn->cn_racked = conn->cn_rread;
        !            74: }
        !            75: 
        !            76: #endif

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