90 lines
1.8 KiB
C
90 lines
1.8 KiB
C
/* Copyright (C) Charles Forsyth
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* See /doc/license/NOTICE.Plan9-9k.txt for details about the licensing.
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*/
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/* Portions of this file are Copyright (C) 2015-2018 Giacomo Tesio <giacomo@tesio.it>
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* See /doc/license/gpl-2.0.txt for details about the licensing.
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*/
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/* Portions of this file are Copyright (C) 9front's team.
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* See /doc/license/9front-mit for details about the licensing.
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* See http://git.9front.org/plan9front/plan9front/HEAD/info.html for a list of authors.
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*/
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#include "u.h"
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#include "../port/lib.h"
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#include "mem.h"
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#include "dat.h"
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#include "fns.h"
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#include "../port/error.h"
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#include "ip.h"
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static void pktbind(Ipifc*, int, char**);
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static void pktunbind(Ipifc*);
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static void pktbwrite(Ipifc*, Block*, int, uint8_t*);
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static void pktin(Fs*, Ipifc*, Block*);
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Medium pktmedium =
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{
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.name= "pkt",
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.hsize= 14,
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.mintu= 40,
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.maxtu= 4*1024,
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.maclen= 6,
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.bind= pktbind,
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.unbind= pktunbind,
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.bwrite= pktbwrite,
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.pktin= pktin,
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};
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/*
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* called to bind an IP ifc to an ethernet device
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* called with ifc wlock'd
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*/
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static void
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pktbind(Ipifc* _1, int argc, char **argv)
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{
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USED(argc, argv);
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}
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/*
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* called with ifc wlock'd
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*/
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static void
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pktunbind(Ipifc* _1)
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{
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}
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/*
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* called by ipoput with a single packet to write
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*/
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static void
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pktbwrite(Ipifc *ifc, Block *bp, int _1, uint8_t* _2)
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{
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/* enqueue onto the conversation's rq */
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bp = concatblock(bp);
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if(ifc->conv->snoopers.ref > 0)
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qpass(ifc->conv->sq, copyblock(bp, BLEN(bp)));
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qpass(ifc->conv->rq, bp);
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}
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/*
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* called with ifc rlocked when someone write's to 'data'
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*/
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static void
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pktin(Fs *f, Ipifc *ifc, Block *bp)
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{
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if(ifc->lifc == nil)
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freeb(bp);
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else {
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if(ifc->conv->snoopers.ref > 0)
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qpass(ifc->conv->sq, copyblock(bp, BLEN(bp)));
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ipiput4(f, ifc, bp);
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}
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}
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void
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pktmediumlink(void)
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{
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addipmedium(&pktmedium);
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}
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