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#include "u.h"
#include "../port/lib.h"
#include "mem.h"
#include "dat.h"
#include "fns.h"
#include "../port/error.h"
#include "ip.h"
static void pktbind(Ipifc*, int, char**);
static void pktunbind(Ipifc*);
static void pktbwrite(Ipifc*, Block*, int, uchar*);
static void pktin(Fs*, Ipifc*, Block*);
Medium pktmedium =
{
.name= "pkt",
.hsize= 14,
.mintu= 40,
.maxtu= 4*1024,
.maclen= 6,
.bind= pktbind,
.unbind= pktunbind,
.bwrite= pktbwrite,
.pktin= pktin,
};
/*
* called to bind an IP ifc to an ethernet device
* called with ifc wlock'd
*/
static void
pktbind(Ipifc*, int argc, char **argv)
{
USED(argc, argv);
}
/*
* called with ifc wlock'd
*/
static void
pktunbind(Ipifc*)
{
}
/*
* called by ipoput with a single packet to write
*/
static void
pktbwrite(Ipifc *ifc, Block *bp, int, uchar*)
{
/* enqueue onto the conversation's rq */
bp = concatblock(bp);
if(ifc->conv->snoopers.ref > 0)
qpass(ifc->conv->sq, copyblock(bp, BLEN(bp)));
qpass(ifc->conv->rq, bp);
}
/*
* called with ifc rlocked when someone write's to 'data'
*/
static void
pktin(Fs *f, Ipifc *ifc, Block *bp)
{
if(ifc->lifc == nil)
freeb(bp);
else {
if(ifc->conv->snoopers.ref > 0)
qpass(ifc->conv->sq, copyblock(bp, BLEN(bp)));
ipiput4(f, ifc, bp);
}
}
void
pktmediumlink(void)
{
addipmedium(&pktmedium);
}
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