diff options
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/net/if_loop.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/sys/net/if_loop.c b/sys/net/if_loop.c index 38aae4e..1544b73 100644 --- a/sys/net/if_loop.c +++ b/sys/net/if_loop.c @@ -113,6 +113,7 @@ struct ifnet *loif = NULL; /* Used externally */ static MALLOC_DEFINE(M_LO, LONAME, "Loopback Interface"); +static struct mtx lo_mtx; static LIST_HEAD(lo_list, lo_softc) lo_list; struct if_clone lo_cloner = IF_CLONE_INITIALIZER(LONAME, @@ -129,9 +130,11 @@ lo_clone_destroy(ifp) /* XXX: destroying lo0 will lead to panics. */ KASSERT(loif != ifp, ("%s: destroying lo0", __func__)); + mtx_lock(&lo_mtx); + LIST_REMOVE(sc, sc_next); + mtx_unlock(&lo_mtx); bpfdetach(ifp); if_detach(ifp); - LIST_REMOVE(sc, sc_next); free(sc, M_LO); } @@ -154,7 +157,9 @@ lo_clone_create(ifc, unit) sc->sc_if.if_softc = sc; if_attach(&sc->sc_if); bpfattach(&sc->sc_if, DLT_NULL, sizeof(u_int)); + mtx_lock(&lo_mtx); LIST_INSERT_HEAD(&lo_list, sc, sc_next); + mtx_unlock(&lo_mtx); if (loif == NULL) loif = &sc->sc_if; @@ -166,6 +171,7 @@ loop_modevent(module_t mod, int type, void *data) { switch (type) { case MOD_LOAD: + mtx_init(&lo_mtx, "lo_mtx", NULL, MTX_DEF); LIST_INIT(&lo_list); if_clone_attach(&lo_cloner); break; |
