1998/0307/ip/ipifc.c (diff list | history)

1998/0306/sys/src/9/ip/ipifc.c:23,28 – 1998/0307/sys/src/9/ip/ipifc.c:23,29 (short | long | prev | next)
1998/0306		Medium *media[] = { ðermedium,
1998/0307		&pktmedium,
1998/0306		&nullmedium, 0 };
1998/0306/sys/src/9/ip/ipifc.c:151,166 – 1998/0307/sys/src/9/ip/ipifc.c:152,169
1998/0306		} wlock(ifc); if(ipifcgrab(ifc) == 0); goto out;
1998/0307		/* dissociate routes */ ifc->ifcid++;
1998/0306
1998/0307		/* disassociate device */ (*ifc->m->unbind)(ifc); memset(ifc->dev, 0, sizeof(ifc->dev)); ifc->arg = nil;
1998/0306		/* hangup queues to stop queuing of packets */ qhangup(ifc->conv->rq, "unbind"); qhangup(ifc->conv->wq, "unbind"); /* dissociate routes */ ifc->ifcid++;                  /* disassociate logical interfaces */ av[0] = "remove"; av[1] = ip;
1998/0306/sys/src/9/ip/ipifc.c:172,185 – 1998/0307/sys/src/9/ip/ipifc.c:175,181
1998/0306		ipifcrem(ifc, av, 3, 0); } /* disassociate device */ (*ifc->m->unbind)(ifc); memset(ifc->dev, 0, sizeof(ifc->dev)); ifc->arg = nil; ifc->m = &nullmedium; ifc->unbinding = 0;                  out:
1998/0307		ifc->m = nil;
1998/0306		wunlock(ifc); poperror(); return nil;
1998/0306/sys/src/9/ip/ipifc.c:223,229 – 1998/0307/sys/src/9/ip/ipifc.c:219,225
1998/0306		for(lifc = ifc->lifc; lifc; lifc = lifc->next){ m += snprint(state+m, n - m, "%-20.20I ->", lifc->local); for(link = lifc->link; link; link = link->lifclink) m += snprint(state+m, n - m, " %-20.20I", link->local->a);
1998/0307		m += snprint(state+m, n - m, " %-20.20I", link->self->a);
1998/0306		m += snprint(state+m, n - m, "\n"); } runlock(ifc);
1998/0306/sys/src/9/ip/ipifc.c:272,277 – 1998/0307/sys/src/9/ip/ipifc.c:268,275
1998/0306		c->wq = qopen(QMAX, 0, 0, 0); ifc = (Ipifc*)c->ptcl; ifc->conv = c;
1998/0307		ifc->unbinding = 0; ifc->m = nil;
1998/0306		} /*
1998/0306/sys/src/9/ip/ipifc.c:281,290 – 1998/0307/sys/src/9/ip/ipifc.c:279,291
1998/0306		static void ipifcclose(Conv *c) { /* * nothing to do since conversation stays open * till the device is unbound. */
1998/0307		Ipifc *ifc; Medium *m; ifc = (Ipifc*)c->ptcl; m = ifc->m; if(m != nil && m->unbindonclose) ipifcunbind(ifc);
1998/0306		unlock(c); }
1998/0306/sys/src/9/ip/ipifc.c:423,429 – 1998/0307/sys/src/9/ip/ipifc.c:424,430
1998/0306		/* disassociate any addresses */ while(lifc->link) remselfcache(ifc, lifc, lifc->link->local->a);
1998/0307		remselfcache(ifc, lifc, lifc->link->self->a);
1998/0306		/* remove the route for this logical interface */ if(isv4(ip))
1998/0306/sys/src/9/ip/ipifc.c:456,461 – 1998/0307/sys/src/9/ip/ipifc.c:457,464
1998/0306		if(*cp != nil) { ifc = (Ipifc*)(*cp)->ptcl; m = ifc->m;
1998/0307		if(m == nil) continue;
1998/0306		if(m->addroute != nil) m->addroute(ifc, vers, addr, mask, gate, type); }
1998/0306/sys/src/9/ip/ipifc.c:473,478 – 1998/0307/sys/src/9/ip/ipifc.c:476,483
1998/0306		if(*cp != nil) { ifc = (Ipifc*)(*cp)->ptcl; m = ifc->m;
1998/0307		if(m == nil) continue;
1998/0306		if(m->remroute != nil) m->remroute(ifc, vers, addr, mask); }
1998/0306/sys/src/9/ip/ipifc.c:603,609 – 1998/0307/sys/src/9/ip/ipifc.c:608,614
1998/0306		} /* look for a link for this lifc */ for(lp = p->link; lp; lp = lp->locallink)
1998/0307		for(lp = p->link; lp; lp = lp->selflink)
1998/0306		if(lp->lifc == lifc) break;
1998/0306/sys/src/9/ip/ipifc.c:612,619 – 1998/0307/sys/src/9/ip/ipifc.c:617,624
1998/0306		lp = smalloc(sizeof(*lp)); lp->ref = 1; lp->lifc = lifc; lp->local = p; lp->locallink = p->link;
1998/0307		lp->self = p; lp->selflink = p->link;
1998/0306		p->link = lp; lp->lifclink = lifc->link; lifc->link = lp;
1998/0306/sys/src/9/ip/ipifc.c:690,696 – 1998/0307/sys/src/9/ip/ipifc.c:695,701
1998/0306		remselfcache(Ipifc *ifc, Iplifc *lifc, uchar *a) { Ipself *p, **l; Iplink *lp, *llp, **ill, **lll;
1998/0307		Iplink *link, **l_self, **l_lifc;
1998/0306		qlock(&selftab);
1998/0306/sys/src/9/ip/ipifc.c:709,722 – 1998/0307/sys/src/9/ip/ipifc.c:714,727
1998/0306		* walk down links from an ifc looking for one * that matches the selftab entry */ ill = &lifc->link; for(lp = *ill; lp; lp = *ill){ if(lp->local == p)
1998/0307		l_lifc = &lifc->link; for(link = *l_lifc; link; link = *l_lifc){ if(link->self == p)
1998/0306		break; ill = &lp->lifclink;
1998/0307		l_lifc = &link->lifclink;
1998/0306		} if(lp == nil)
1998/0307		if(link == nil)
1998/0306		goto out; /*
1998/0306/sys/src/9/ip/ipifc.c:723,739 – 1998/0307/sys/src/9/ip/ipifc.c:728,744
1998/0306		* walk down the links from the selftab looking for * the one we just found */ lll = &p->link; for(llp = *lll; llp; llp = *lll){ if(llp == lp)
1998/0307		l_self = &p->link; for(link = *l_self; link; link = *l_self){ if(link == *(l_lifc))
1998/0306		break; lll = &lp->locallink;
1998/0307		l_self = &link->selflink;
1998/0306		} if(llp == nil)
1998/0307		if(link == nil)
1998/0306		panic("remselfcache"); if(--(llp->ref) != 0)
1998/0307		if(--(link->ref) != 0)
1998/0306		goto out; if((p->type & Rmulti) && ifc->m->remmulti != nil)
1998/0306/sys/src/9/ip/ipifc.c:740,748 – 1998/0307/sys/src/9/ip/ipifc.c:745,753
1998/0306		(*ifc->m->remmulti)(ifc, a, lifc->local); /* ref == 0, remove from both chains and free the link */ *ill = lp->lifclink; *lll = llp->locallink; iplinkfree(lp);
1998/0307		*l_lifc = link->lifclink; *l_self = link->selflink; iplinkfree(link);
1998/0306		/* remove from routing table */ if(isv4(a))
1998/0306/sys/src/9/ip/ipifc.c:1001,1059 – 1998/0307/sys/src/9/ip/ipifc.c:1006,1011
1998/0306		return V6; } return 0; }                  /* * used to allow on the fly unbinds, return -1 if interface unusable */ int ipifccheckin(Ipifc *ifc, Medium *med) { int rv;                  lock(&ifc->idlock); if(ifc->unbinding || ifc->m != med) rv = -1; else rv = ++(ifc->ref); if(ifc->ref < 0) panic("ipifccheckin"); unlock(&ifc->idlock); return rv; }                  void ipifccheckout(Ipifc *ifc) { lock(&ifc->idlock); if(--(ifc->ref) == 0) if(ifc->unbinding) wakeup(&ifc->wait); if(ifc->ref < 0) panic("ipifccheckin"); unlock(&ifc->idlock); }                  static int allout(void *x) { Ipifc *ifc = x;                  return ifc->ref == 0; }                  int ipifcgrab(Ipifc *ifc) { lock(&ifc->idlock); if(ifc->unbinding){ unlock(&ifc->idlock); return 0; } ifc->unbinding = 1; /* after this ref can only go down */ unlock(&ifc->idlock);                  sleep(&ifc->wait, allout, ifc);                  return 1; } /*