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authorYOSHIFUJI Hideaki / 吉藤英明 <yoshfuji@linux-ipv6.org>2010-03-15 21:51:18 +0000
committerDavid S. Miller <davem@davemloft.net>2010-03-16 14:34:23 -0700
commit32dec5dd0233ebffa9cae25ce7ba6daeb7df4467 (patch)
treeb086e355e9afa2cb6ab51988175afd619787029b /net/bridge/br_private.h
parent858a18a6a2f74e8f0e5b2e9671d4b74694aba708 (diff)
bridge br_multicast: Don't refer to BR_INPUT_SKB_CB(skb)->mrouters_only without IGMP snooping.
Without CONFIG_BRIDGE_IGMP_SNOOPING, BR_INPUT_SKB_CB(skb)->mrouters_only is not appropriately initialized, so we can see garbage. A clear option to fix this is to set it even without that config, but we cannot optimize out the branch. Let's introduce a macro that returns value of mrouters_only and let it return 0 without CONFIG_BRIDGE_IGMP_SNOOPING. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/bridge/br_private.h')
-rw-r--r--net/bridge/br_private.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index bfb8feb310a..846d7d1e207 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -206,12 +206,20 @@ struct net_bridge
struct br_input_skb_cb {
struct net_device *brdev;
+#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
int igmp;
int mrouters_only;
+#endif
};
#define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb)
+#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
+# define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only)
+#else
+# define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0)
+#endif
+
extern struct notifier_block br_device_notifier;
extern const u8 br_group_address[ETH_ALEN];