PERFORCE change 118758 for review
Marko Zec
zec at FreeBSD.org
Tue Apr 24 22:35:49 UTC 2007
http://perforce.freebsd.org/chv.cgi?CH=118758
Change 118758 by zec at zec_tca51 on 2007/04/24 22:35:11
A hack to allow for lo0 to be destroyed when cleaning up
a vnet instance.
Affected files ...
.. //depot/projects/vimage/src/sys/net/if_loop.c#12 edit
Differences ...
==== //depot/projects/vimage/src/sys/net/if_loop.c#12 (text+ko) ====
@@ -211,12 +211,24 @@
static int vnet_loif_idetach(void)
{
INIT_VNET_NET(curvnet);
- struct lo_softc *lop, *nlop;
+ struct lo_softc *sc, *nsc;
+
+ LIST_FOREACH_SAFE(sc, &V_lo_list, sc_next, nsc) {
+ struct ifnet *ifp = sc->sc_ifp;
- LIST_FOREACH_SAFE(lop, &V_lo_list, sc_next, nlop) {
- if (lop->sc_ifp == V_loif)
+ if (ifp == V_loif) {
+ /*
+ * A hack to allow lo0 to be detached:
+ * bump if_unit number from 0 to 1. By
+ * setting V_loif to NULL we prevent queuing
+ * of routing messages that would have
+ * m_pkthdr.rcvif pointing to a nonexisting
+ * ifnet, i.e. the lo0 we just destroyed.
+ */
+ ifp->if_dunit = 1;
V_loif = NULL;
- lo_clone_destroy(lop->sc_ifp);
+ }
+ if_clone_destroy(ifp->if_xname);
}
return 0;
}
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