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-rw-r--r--include/linux/pim.h45
1 files changed, 45 insertions, 0 deletions
diff --git a/include/linux/pim.h b/include/linux/pim.h
new file mode 100644
index 000000000000..236ffd317394
--- /dev/null
+++ b/include/linux/pim.h
@@ -0,0 +1,45 @@
+#ifndef __LINUX_PIM_H
+#define __LINUX_PIM_H
+
+#include <asm/byteorder.h>
+
+#ifndef __KERNEL__
+struct pim {
+#if defined(__LITTLE_ENDIAN_BITFIELD)
+ __u8 pim_type:4, /* PIM message type */
+ pim_ver:4; /* PIM version */
+#elif defined(__BIG_ENDIAN_BITFIELD)
+ __u8 pim_ver:4; /* PIM version */
+ pim_type:4; /* PIM message type */
+#endif
+ __u8 pim_rsv; /* Reserved */
+ __be16 pim_cksum; /* Checksum */
+};
+
+#define PIM_MINLEN 8
+#endif
+
+/* Message types - V1 */
+#define PIM_V1_VERSION __constant_htonl(0x10000000)
+#define PIM_V1_REGISTER 1
+
+/* Message types - V2 */
+#define PIM_VERSION 2
+#define PIM_REGISTER 1
+
+#if defined(__KERNEL__)
+#define PIM_NULL_REGISTER __constant_htonl(0x40000000)
+
+/* PIMv2 register message header layout (ietf-draft-idmr-pimvsm-v2-00.ps */
+struct pimreghdr
+{
+ __u8 type;
+ __u8 reserved;
+ __be16 csum;
+ __be32 flags;
+};
+
+struct sk_buff;
+extern int pim_rcv_v1(struct sk_buff *);
+#endif
+#endif