Remove useless struct in6_ifextra

in6_var.h r1.75 removed all other struct members.

Now It only contains a single struct nd_ifinfo pointer, so address family
specific data might as well be just that.

ND_IFINFO() is the only way nd6_nbr.c and nd6.c access this data, there is
no other usage of if_afdata[].

One allocation and unhelpful indirection less per interface.

All under _KERNEL.

OK claudio

diff --git a/sys/netinet6/in6.c b/sys/netinet6/in6.c
index 89f81b7..d52a773 100644 (file)
--- a/sys/netinet6/in6.c
+++ b/sys/netinet6/in6.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: in6.c,v 1.251 2022/11/19 14:26:40 kn Exp $    */
+/*     $OpenBSD: in6.c,v 1.252 2022/11/22 14:51:01 kn Exp $    */
 /*     $KAME: in6.c,v 1.372 2004/06/14 08:14:21 itojun Exp $   */
 
 /*
@@ -1601,19 +1601,11 @@ in6if_do_dad(struct ifnet *ifp)
 void *
 in6_domifattach(struct ifnet *ifp)
 {
-       struct in6_ifextra *ext;
-
-       ext = malloc(sizeof(*ext), M_IFADDR, M_WAITOK | M_ZERO);
-
-       ext->nd_ifinfo = nd6_ifattach(ifp);
-       return ext;
+       return nd6_ifattach(ifp);
 }
 
 void
 in6_domifdetach(struct ifnet *ifp, void *aux)
 {
-       struct in6_ifextra *ext = (struct in6_ifextra *)aux;
-
-       nd6_ifdetach(ext->nd_ifinfo);
-       free(ext, M_IFADDR, sizeof(*ext));
+       nd6_ifdetach(aux);
 }

diff --git a/sys/netinet6/in6_var.h b/sys/netinet6/in6_var.h
index c2ce99e..8f95784 100644 (file)
--- a/sys/netinet6/in6_var.h
+++ b/sys/netinet6/in6_var.h
@@ -1,4 +1,4 @@
-/*     $OpenBSD: in6_var.h,v 1.75 2022/11/12 16:36:07 kn Exp $ */
+/*     $OpenBSD: in6_var.h,v 1.76 2022/11/22 14:51:01 kn Exp $ */
 /*     $KAME: in6_var.h,v 1.55 2001/02/16 12:49:45 itojun Exp $        */
 
 /*
@@ -87,11 +87,6 @@ struct in6_addrlifetime {
 };
 
 #ifdef _KERNEL
-struct nd_ifinfo;
-struct in6_ifextra {
-       struct nd_ifinfo *nd_ifinfo;
-};
-
 struct in6_ifaddr {
        struct  ifaddr ia_ifa;          /* protocol-independent info */
 #define        ia_ifp          ia_ifa.ifa_ifp

diff --git a/sys/netinet6/nd6.h b/sys/netinet6/nd6.h
index a889ccc..1ee60c9 100644 (file)
--- a/sys/netinet6/nd6.h
+++ b/sys/netinet6/nd6.h
@@ -1,4 +1,4 @@
-/*     $OpenBSD: nd6.h,v 1.80 2022/11/12 02:53:17 kn Exp $     */
+/*     $OpenBSD: nd6.h,v 1.81 2022/11/22 14:51:01 kn Exp $     */
 /*     $KAME: nd6.h,v 1.95 2002/06/08 11:31:06 itojun Exp $    */
 
 /*
@@ -94,7 +94,7 @@ struct        in6_ndifreq {
 #include <sys/queue.h>
 
 #define ND_IFINFO(ifp) \
-       (((struct in6_ifextra *)(ifp)->if_afdata[AF_INET6])->nd_ifinfo)
+       ((struct nd_ifinfo *)(ifp)->if_afdata[AF_INET6])
 
 struct llinfo_nd6 {
        TAILQ_ENTRY(llinfo_nd6) ln_list;