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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/ip.h"
IProuter iprouter;
/*
* User level routing. Ip packets we don't know what to do with
* come here.
*/
void
useriprouter(Fs *f, Ipifc *ifc, Block *bp)
{
qlock(&f->iprouter);
if(f->iprouter.q != nil){
bp = padblock(bp, IPaddrlen);
if(bp == nil)
return;
ipmove(bp->rp, ifc->lifc->local);
qpass(f->iprouter.q, bp);
}else
freeb(bp);
qunlock(&f->iprouter);
}
void
iprouteropen(Fs *f)
{
qlock(&f->iprouter);
f->iprouter.opens++;
if(f->iprouter.q == nil)
f->iprouter.q = qopen(64*1024, 0, 0, 0);
else if(f->iprouter.opens == 1)
qreopen(f->iprouter.q);
qunlock(&f->iprouter);
}
void
iprouterclose(Fs *f)
{
qlock(&f->iprouter);
f->iprouter.opens--;
if(f->iprouter.opens == 0)
qclose(f->iprouter.q);
qunlock(&f->iprouter);
}
long
iprouterread(Fs *f, void *a, int n)
{
return qread(f->iprouter.q, a, n);
}
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