[src/trunk]: src/sys/netinet6 In rump (ifp)->if_afdata[AF_INET6] == NULL if w...

[christos <christos%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/86ba3dad1f55
branches:  trunk
changeset: 817216:86ba3dad1f55
user:      christos <christos%NetBSD.org@localhost>
date:      Fri Aug 12 11:44:24 2016 +0000

description:
In rump (ifp)->if_afdata[AF_INET6] == NULL if we did not register netinet6
yet. Treat this like we don't have a scope, and make the sid tests consistent.

diffstat:

 sys/netinet6/scope6.c |  14 +++++++-------
 1 files changed, 7 insertions(+), 7 deletions(-)

diffs (49 lines):

diff -r ca46e04787b1 -r 86ba3dad1f55 sys/netinet6/scope6.c
--- a/sys/netinet6/scope6.c     Fri Aug 12 11:43:04 2016 +0000
+++ b/sys/netinet6/scope6.c     Fri Aug 12 11:44:24 2016 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: scope6.c,v 1.14 2016/06/15 06:01:21 ozaki-r Exp $      */
+/*     $NetBSD: scope6.c,v 1.15 2016/08/12 11:44:24 christos Exp $     */
 /*     $KAME$  */
 
 /*-
@@ -31,7 +31,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: scope6.c,v 1.14 2016/06/15 06:01:21 ozaki-r Exp $");
+__KERNEL_RCSID(0, "$NetBSD: scope6.c,v 1.15 2016/08/12 11:44:24 christos Exp $");
 
 #include <sys/param.h>
 #include <sys/malloc.h>
@@ -56,7 +56,8 @@
 
 static struct scope6_id sid_default;
 #define SID(ifp) \
-       (((struct in6_ifextra *)(ifp)->if_afdata[AF_INET6])->scope6_id)
+    ((ifp)->if_afdata[AF_INET6] == NULL ? NULL : \
+       ((struct in6_ifextra *)(ifp)->if_afdata[AF_INET6])->scope6_id)
 
 void
 scope6_init(void)
@@ -100,9 +101,7 @@
 {
        int i;
        int error = 0;
-       struct scope6_id *sid = NULL;
-
-       sid = SID(ifp);
+       struct scope6_id *sid = SID(ifp);
 
        if (!sid)       /* paranoid? */
                return (EINVAL);
@@ -393,7 +392,8 @@
        uint32_t zoneid = 0;
        const struct scope6_id *sid = SID(ifp);
 
-       KASSERT(sid != NULL);
+       if (sid == NULL)
+               return EINVAL;
 
        /*
         * special case: the loopback address can only belong to a loopback