/*
* associate an address with the interface. This wipes out any previous
* addresses. This is a macro that means, remove all the old interfaces
* and add a new one.
*/
static char*
ipifcconnect(Conv* c, char **argv, int argc)
{
Proc *up = externup();
char *err;
Ipifc *ifc;
ifc = (Ipifc*)c->ptcl;
if(ifc->medium == nil)
return "ipifc not yet bound to device";
if(waserror()){
wunlock(ifc);
nexterror();
}
wlock(ifc);
while(ifc->lifc){
err = ipifcremlifc(ifc, ifc->lifc);
if(err)
error(err);
}
wunlock(ifc);
poperror();
err = ipifcadd(ifc, argv, argc, 0, nil);
if(err)
return err;
Fsconnected(c, nil);
return nil;
}
/*
* associate an address with the interface. This wipes out any previous
* addresses. This is a macro that means, remove all the old interfaces
* and add a new one.
*/
static char *ipifcconnect(struct conv *c, char **argv, int argc)
{
ERRSTACK(1);
char *err;
struct Ipifc *ifc;
ifc = (struct Ipifc *)c->ptcl;
if (ifc->m == NULL)
return "ipifc not yet bound to device";
if (waserror()) {
wunlock(&ifc->rwlock);
nexterror();
}
wlock(&ifc->rwlock);
while (ifc->lifc) {
err = ipifcremlifc(ifc, ifc->lifc);
if (err)
error(err);
}
wunlock(&ifc->rwlock);
poperror();
err = ipifcadd(ifc, argv, argc, 0, NULL);
if (err)
return err;
Fsconnected(c, NULL);
return NULL;
}
/*
* detach a device from an interface, close the interface
* called with ifc->conv closed
*/
static char*
ipifcunbind(Ipifc *ifc)
{
Proc *up = externup();
char *err;
if(waserror()){
wunlock(ifc);
nexterror();
}
wlock(ifc);
/* dissociate routes */
if(ifc->medium != nil && ifc->medium->unbindonclose == 0)
ifc->conv->inuse--;
ifc->ifcid++;
/* disassociate logical interfaces (before zeroing ifc->arg) */
while(ifc->lifc){
err = ipifcremlifc(ifc, ifc->lifc);
/*
* note: err non-zero means lifc not found,
* which can't happen in this case.
*/
if(err)
error(err);
}
/* disassociate device */
if(ifc->medium && ifc->medium->unbind)
(*ifc->medium->unbind)(ifc);
memset(ifc->dev, 0, sizeof(ifc->dev));
ifc->arg = nil;
ifc->reassemble = 0;
/* close queues to stop queuing of packets */
qclose(ifc->conv->rq);
qclose(ifc->conv->wq);
qclose(ifc->conv->sq);
ifc->medium = nil;
wunlock(ifc);
poperror();
return nil;
}
/*
* detach a device from an interface, close the interface
* called with ifc->conv closed
*/
static char *ipifcunbind(struct Ipifc *ifc)
{
ERRSTACK(1);
char *err;
if (waserror()) {
wunlock(&ifc->rwlock);
nexterror();
}
wlock(&ifc->rwlock);
/* dissociate routes */
if (ifc->m != NULL && ifc->m->unbindonclose == 0)
ifc->conv->inuse--;
ifc->ifcid++;
/* disassociate device */
if (ifc->m != NULL && ifc->m->unbind)
(*ifc->m->unbind) (ifc);
memset(ifc->dev, 0, sizeof(ifc->dev));
ifc->arg = NULL;
ifc->reassemble = 0;
/* close queues to stop queuing of packets */
qclose(ifc->conv->rq);
qclose(ifc->conv->wq);
qclose(ifc->conv->sq);
/* disassociate logical interfaces */
while (ifc->lifc) {
err = ipifcremlifc(ifc, ifc->lifc);
if (err)
error(err);
}
ifc->m = NULL;
wunlock(&ifc->rwlock);
poperror();
return NULL;
}
/*
* remove an address from an interface.
* called with c->car locked
*/
char*
ipifcrem(Ipifc *ifc, char **argv, int argc)
{
char *rv;
uint8_t ip[IPaddrlen], mask[IPaddrlen], rem[IPaddrlen];
Iplifc *lifc;
if(argc < 3)
return Ebadarg;
if (parseip(ip, argv[1]) == -1)
return Ebadip;
parseipmask(mask, argv[2]);
if(argc < 4)
maskip(ip, mask, rem);
else
if (parseip(rem, argv[3]) == -1)
return Ebadip;
wlock(ifc);
/*
* find address on this interface and remove from chain.
* for pt to pt we actually specify the remote address as the
* addresss to remove.
*/
for(lifc = ifc->lifc; lifc != nil; lifc = lifc->next) {
if (memcmp(ip, lifc->local, IPaddrlen) == 0
&& memcmp(mask, lifc->mask, IPaddrlen) == 0
&& memcmp(rem, lifc->remote, IPaddrlen) == 0)
break;
}
rv = ipifcremlifc(ifc, lifc);
wunlock(ifc);
return rv;
}
