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authorLinus Lüssing <linus.luessing@web.de>2013-09-04 02:13:39 +0200
committerDavid S. Miller <davem@davemloft.net>2013-09-05 12:35:53 -0400
commit3c3769e63301fd92fcaf51870c371583dd0282ce (patch)
treebdb41fcb0cde61816896406a405d1385cd4d446e /net/bridge
parent8fad9c39f31f9ed7bf3526c43a4537b2fcf1a5d5 (diff)
downloadlinux-3c3769e63301fd92fcaf51870c371583dd0282ce.tar.bz2
bridge: apply multicast snooping to IPv6 link-local, too
The multicast snooping code should have matured enough to be safely applicable to IPv6 link-local multicast addresses (excluding the link-local all nodes address, ff02::1), too. Signed-off-by: Linus Lüssing <linus.luessing@web.de> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/bridge')
-rw-r--r--net/bridge/br_mdb.c3
-rw-r--r--net/bridge/br_multicast.c7
-rw-r--r--net/bridge/br_private.h10
3 files changed, 6 insertions, 14 deletions
diff --git a/net/bridge/br_mdb.c b/net/bridge/br_mdb.c
index e4d5cd43b7fb..de818d95c476 100644
--- a/net/bridge/br_mdb.c
+++ b/net/bridge/br_mdb.c
@@ -9,6 +9,7 @@
#include <net/netlink.h>
#if IS_ENABLED(CONFIG_IPV6)
#include <net/ipv6.h>
+#include <net/addrconf.h>
#endif
#include "br_private.h"
@@ -254,7 +255,7 @@ static bool is_valid_mdb_entry(struct br_mdb_entry *entry)
return false;
#if IS_ENABLED(CONFIG_IPV6)
} else if (entry->addr.proto == htons(ETH_P_IPV6)) {
- if (!ipv6_is_transient_multicast(&entry->addr.u.ip6))
+ if (ipv6_addr_is_ll_all_nodes(&entry->addr.u.ip6))
return false;
#endif
} else
diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index 5388955b2a3c..23531471f16a 100644
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -29,6 +29,7 @@
#include <net/ipv6.h>
#include <net/mld.h>
#include <net/ip6_checksum.h>
+#include <net/addrconf.h>
#endif
#include "br_private.h"
@@ -723,7 +724,7 @@ static int br_ip6_multicast_add_group(struct net_bridge *br,
{
struct br_ip br_group;
- if (!ipv6_is_transient_multicast(group))
+ if (ipv6_addr_is_ll_all_nodes(group))
return 0;
br_group.u.ip6 = *group;
@@ -1354,7 +1355,7 @@ static void br_ip6_multicast_leave_group(struct net_bridge *br,
{
struct br_ip br_group;
- if (!ipv6_is_transient_multicast(group))
+ if (ipv6_addr_is_ll_all_nodes(group))
return;
br_group.u.ip6 = *group;
@@ -1495,7 +1496,7 @@ static int br_multicast_ipv6_rcv(struct net_bridge *br,
return 0;
/* Prevent flooding this packet if there is no listener present */
- if (ipv6_is_transient_multicast(&ip6h->daddr))
+ if (!ipv6_addr_is_ll_all_nodes(&ip6h->daddr))
BR_INPUT_SKB_CB(skb)->mrouters_only = 1;
if (ip6h->nexthdr != IPPROTO_HOPOPTS ||
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index d41283c57952..89b2949be02f 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -476,16 +476,6 @@ extern void br_mdb_notify(struct net_device *dev, struct net_bridge_port *port,
#define mlock_dereference(X, br) \
rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock))
-#if IS_ENABLED(CONFIG_IPV6)
-#include <net/addrconf.h>
-static inline int ipv6_is_transient_multicast(const struct in6_addr *addr)
-{
- if (ipv6_addr_is_multicast(addr) && IPV6_ADDR_MC_FLAG_TRANSIENT(addr))
- return 1;
- return 0;
-}
-#endif
-
static inline bool br_multicast_is_router(struct net_bridge *br)
{
return br->multicast_router == 2 ||