[src/trunk]: src/sys/netinet6 Provide in6_multi_group

[ozaki-r <ozaki-r%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/5cb9b2deb331
branches:  trunk
changeset: 822093:5cb9b2deb331
user:      ozaki-r <ozaki-r%NetBSD.org@localhost>
date:      Wed Mar 01 08:54:12 2017 +0000

description:
Provide in6_multi_group

Use it when checking if we belong to the group, instead of in6_lookup_multi.

No functional change.

diffstat:

 sys/netinet6/in6_var.h    |   3 ++-
 sys/netinet6/ip6_input.c  |  10 +++++-----
 sys/netinet6/ip6_mroute.c |  10 +++++-----
 sys/netinet6/ip6_output.c |  11 +++++------
 sys/netinet6/mld6.c       |  14 ++++++++++++--
 5 files changed, 29 insertions(+), 19 deletions(-)

diffs (166 lines):

diff -r 8d9df9ff3058 -r 5cb9b2deb331 sys/netinet6/in6_var.h
--- a/sys/netinet6/in6_var.h    Wed Mar 01 08:31:06 2017 +0000
+++ b/sys/netinet6/in6_var.h    Wed Mar 01 08:54:12 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: in6_var.h,v 1.93 2017/02/23 07:57:10 ozaki-r Exp $     */
+/*     $NetBSD: in6_var.h,v 1.94 2017/03/01 08:54:12 ozaki-r Exp $     */
 /*     $KAME: in6_var.h,v 1.81 2002/06/08 11:16:51 itojun Exp $        */
 
 /*
@@ -683,6 +683,7 @@
 
 struct in6_multi *
        in6_lookup_multi(const struct in6_addr *, const struct ifnet *);
+bool   in6_multi_group(const struct in6_addr *, const struct ifnet *);
 void   in6_purge_multi(struct ifnet *);
 struct in6_multi *in6_addmulti(struct in6_addr *, struct ifnet *,
        int *, int);
diff -r 8d9df9ff3058 -r 5cb9b2deb331 sys/netinet6/ip6_input.c
--- a/sys/netinet6/ip6_input.c  Wed Mar 01 08:31:06 2017 +0000
+++ b/sys/netinet6/ip6_input.c  Wed Mar 01 08:54:12 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: ip6_input.c,v 1.175 2017/02/22 07:46:00 ozaki-r Exp $  */
+/*     $NetBSD: ip6_input.c,v 1.176 2017/03/01 08:54:12 ozaki-r Exp $  */
 /*     $KAME: ip6_input.c,v 1.188 2001/03/29 05:34:31 itojun Exp $     */
 
 /*
@@ -62,7 +62,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: ip6_input.c,v 1.175 2017/02/22 07:46:00 ozaki-r Exp $");
+__KERNEL_RCSID(0, "$NetBSD: ip6_input.c,v 1.176 2017/03/01 08:54:12 ozaki-r Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_gateway.h"
@@ -458,15 +458,15 @@
         * Multicast check
         */
        if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst)) {
-               struct  in6_multi *in6m = 0;
+               bool ingroup;
 
                in6_ifstat_inc(rcvif, ifs6_in_mcast);
                /*
                 * See if we belong to the destination multicast group on the
                 * arrival interface.
                 */
-               in6m = in6_lookup_multi(&ip6->ip6_dst, rcvif);
-               if (in6m)
+               ingroup = in6_multi_group(&ip6->ip6_dst, rcvif);
+               if (ingroup)
                        ours = 1;
                else if (!ip6_mrouter) {
                        uint64_t *ip6s = IP6_STAT_GETREF();
diff -r 8d9df9ff3058 -r 5cb9b2deb331 sys/netinet6/ip6_mroute.c
--- a/sys/netinet6/ip6_mroute.c Wed Mar 01 08:31:06 2017 +0000
+++ b/sys/netinet6/ip6_mroute.c Wed Mar 01 08:54:12 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: ip6_mroute.c,v 1.118 2017/02/22 07:46:00 ozaki-r Exp $ */
+/*     $NetBSD: ip6_mroute.c,v 1.119 2017/03/01 08:54:12 ozaki-r Exp $ */
 /*     $KAME: ip6_mroute.c,v 1.49 2001/07/25 09:21:18 jinmei Exp $     */
 
 /*
@@ -117,7 +117,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: ip6_mroute.c,v 1.118 2017/02/22 07:46:00 ozaki-r Exp $");
+__KERNEL_RCSID(0, "$NetBSD: ip6_mroute.c,v 1.119 2017/03/01 08:54:12 ozaki-r Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_inet.h"
@@ -1551,7 +1551,7 @@
        int error __mrt6debugused = 0;
        int s;
        static struct route ro;
-       struct in6_multi *in6m;
+       bool ingroup;
        struct sockaddr_in6 dst6;
        u_long linkmtu;
 
@@ -1608,8 +1608,8 @@
         */
        sockaddr_in6_init(&dst6, &ip6->ip6_dst, 0, 0, 0);
 
-       in6m = in6_lookup_multi(&ip6->ip6_dst, ifp);
-       if (in6m != NULL) {
+       ingroup = in6_multi_group(&ip6->ip6_dst, ifp);
+       if (ingroup) {
                ip6_mloopback(ifp, m,
                    satocsin6(rtcache_getdst(&ro)));
        }
diff -r 8d9df9ff3058 -r 5cb9b2deb331 sys/netinet6/ip6_output.c
--- a/sys/netinet6/ip6_output.c Wed Mar 01 08:31:06 2017 +0000
+++ b/sys/netinet6/ip6_output.c Wed Mar 01 08:54:12 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: ip6_output.c,v 1.186 2017/02/22 07:46:00 ozaki-r Exp $ */
+/*     $NetBSD: ip6_output.c,v 1.187 2017/03/01 08:54:12 ozaki-r Exp $ */
 /*     $KAME: ip6_output.c,v 1.172 2001/03/25 09:55:56 itojun Exp $    */
 
 /*
@@ -62,7 +62,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: ip6_output.c,v 1.186 2017/02/22 07:46:00 ozaki-r Exp $");
+__KERNEL_RCSID(0, "$NetBSD: ip6_output.c,v 1.187 2017/03/01 08:54:12 ozaki-r Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_inet.h"
@@ -636,7 +636,7 @@
        if (!IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst))
                m->m_flags &= ~(M_BCAST | M_MCAST);     /* just in case */
        else {
-               struct  in6_multi *in6m;
+               bool ingroup;
 
                m->m_flags = (m->m_flags & ~M_BCAST) | M_MCAST;
 
@@ -652,9 +652,8 @@
                        goto bad;
                }
 
-               in6m = in6_lookup_multi(&ip6->ip6_dst, ifp);
-               if (in6m != NULL &&
-                  (im6o == NULL || im6o->im6o_multicast_loop)) {
+               ingroup = in6_multi_group(&ip6->ip6_dst, ifp);
+               if (ingroup && (im6o == NULL || im6o->im6o_multicast_loop)) {
                        /*
                         * If we belong to the destination multicast group
                         * on the outgoing interface, and the caller did not
diff -r 8d9df9ff3058 -r 5cb9b2deb331 sys/netinet6/mld6.c
--- a/sys/netinet6/mld6.c       Wed Mar 01 08:31:06 2017 +0000
+++ b/sys/netinet6/mld6.c       Wed Mar 01 08:54:12 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: mld6.c,v 1.83 2017/02/23 07:57:10 ozaki-r Exp $        */
+/*     $NetBSD: mld6.c,v 1.84 2017/03/01 08:54:12 ozaki-r Exp $        */
 /*     $KAME: mld6.c,v 1.25 2001/01/16 14:14:18 itojun Exp $   */
 
 /*
@@ -102,7 +102,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: mld6.c,v 1.83 2017/02/23 07:57:10 ozaki-r Exp $");
+__KERNEL_RCSID(0, "$NetBSD: mld6.c,v 1.84 2017/03/01 08:54:12 ozaki-r Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_inet.h"
@@ -780,6 +780,16 @@
        return in6m;
 }
 
+bool
+in6_multi_group(const struct in6_addr *addr, const struct ifnet *ifp)
+{
+       bool ingroup;
+
+       ingroup = in6_lookup_multi(addr, ifp) != NULL;
+
+       return ingroup;
+}
+
 /*
  * Purge in6_multi records associated to the interface.
  */