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-rw-r--r--include/linux/igmp.h21
1 files changed, 21 insertions, 0 deletions
diff --git a/include/linux/igmp.h b/include/linux/igmp.h
index a113fe6..f510e7e 100644
--- a/include/linux/igmp.h
+++ b/include/linux/igmp.h
@@ -80,6 +80,27 @@ struct igmpv3_query {
__be32 srcs[0];
};
+#ifdef __KERNEL__
+#include <linux/skbuff.h>
+
+static inline struct igmphdr *igmp_hdr(const struct sk_buff *skb)
+{
+ return (struct igmphdr *)skb_transport_header(skb);
+}
+
+static inline struct igmpv3_report *
+ igmpv3_report_hdr(const struct sk_buff *skb)
+{
+ return (struct igmpv3_report *)skb_transport_header(skb);
+}
+
+static inline struct igmpv3_query *
+ igmpv3_query_hdr(const struct sk_buff *skb)
+{
+ return (struct igmpv3_query *)skb_transport_header(skb);
+}
+#endif
+
#define IGMP_HOST_MEMBERSHIP_QUERY 0x11 /* From RFC1112 */
#define IGMP_HOST_MEMBERSHIP_REPORT 0x12 /* Ditto */
#define IGMP_DVMRP 0x13 /* DVMRP routing */
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