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-rw-r--r--include/linux/mroute.h226
1 files changed, 226 insertions, 0 deletions
diff --git a/include/linux/mroute.h b/include/linux/mroute.h
new file mode 100644
index 000000000000..e05d54a90743
--- /dev/null
+++ b/include/linux/mroute.h
@@ -0,0 +1,226 @@
+#ifndef __LINUX_MROUTE_H
+#define __LINUX_MROUTE_H
+
+#include <linux/sockios.h>
+#include <linux/in.h>
+
+/*
+ * Based on the MROUTING 3.5 defines primarily to keep
+ * source compatibility with BSD.
+ *
+ * See the mrouted code for the original history.
+ *
+ * Protocol Independent Multicast (PIM) data structures included
+ * Carlos Picoto (cap@di.fc.ul.pt)
+ *
+ */
+
+#define MRT_BASE 200
+#define MRT_INIT (MRT_BASE) /* Activate the kernel mroute code */
+#define MRT_DONE (MRT_BASE+1) /* Shutdown the kernel mroute */
+#define MRT_ADD_VIF (MRT_BASE+2) /* Add a virtual interface */
+#define MRT_DEL_VIF (MRT_BASE+3) /* Delete a virtual interface */
+#define MRT_ADD_MFC (MRT_BASE+4) /* Add a multicast forwarding entry */
+#define MRT_DEL_MFC (MRT_BASE+5) /* Delete a multicast forwarding entry */
+#define MRT_VERSION (MRT_BASE+6) /* Get the kernel multicast version */
+#define MRT_ASSERT (MRT_BASE+7) /* Activate PIM assert mode */
+#define MRT_PIM (MRT_BASE+8) /* enable PIM code */
+
+#define SIOCGETVIFCNT SIOCPROTOPRIVATE /* IP protocol privates */
+#define SIOCGETSGCNT (SIOCPROTOPRIVATE+1)
+#define SIOCGETRPF (SIOCPROTOPRIVATE+2)
+
+#define MAXVIFS 32
+typedef unsigned long vifbitmap_t; /* User mode code depends on this lot */
+typedef unsigned short vifi_t;
+#define ALL_VIFS ((vifi_t)(-1))
+
+/*
+ * Same idea as select
+ */
+
+#define VIFM_SET(n,m) ((m)|=(1<<(n)))
+#define VIFM_CLR(n,m) ((m)&=~(1<<(n)))
+#define VIFM_ISSET(n,m) ((m)&(1<<(n)))
+#define VIFM_CLRALL(m) ((m)=0)
+#define VIFM_COPY(mfrom,mto) ((mto)=(mfrom))
+#define VIFM_SAME(m1,m2) ((m1)==(m2))
+
+/*
+ * Passed by mrouted for an MRT_ADD_VIF - again we use the
+ * mrouted 3.6 structures for compatibility
+ */
+
+struct vifctl {
+ vifi_t vifc_vifi; /* Index of VIF */
+ unsigned char vifc_flags; /* VIFF_ flags */
+ unsigned char vifc_threshold; /* ttl limit */
+ unsigned int vifc_rate_limit; /* Rate limiter values (NI) */
+ struct in_addr vifc_lcl_addr; /* Our address */
+ struct in_addr vifc_rmt_addr; /* IPIP tunnel addr */
+};
+
+#define VIFF_TUNNEL 0x1 /* IPIP tunnel */
+#define VIFF_SRCRT 0x2 /* NI */
+#define VIFF_REGISTER 0x4 /* register vif */
+
+/*
+ * Cache manipulation structures for mrouted and PIMd
+ */
+
+struct mfcctl
+{
+ struct in_addr mfcc_origin; /* Origin of mcast */
+ struct in_addr mfcc_mcastgrp; /* Group in question */
+ vifi_t mfcc_parent; /* Where it arrived */
+ unsigned char mfcc_ttls[MAXVIFS]; /* Where it is going */
+ unsigned int mfcc_pkt_cnt; /* pkt count for src-grp */
+ unsigned int mfcc_byte_cnt;
+ unsigned int mfcc_wrong_if;
+ int mfcc_expire;
+};
+
+/*
+ * Group count retrieval for mrouted
+ */
+
+struct sioc_sg_req
+{
+ struct in_addr src;
+ struct in_addr grp;
+ unsigned long pktcnt;
+ unsigned long bytecnt;
+ unsigned long wrong_if;
+};
+
+/*
+ * To get vif packet counts
+ */
+
+struct sioc_vif_req
+{
+ vifi_t vifi; /* Which iface */
+ unsigned long icount; /* In packets */
+ unsigned long ocount; /* Out packets */
+ unsigned long ibytes; /* In bytes */
+ unsigned long obytes; /* Out bytes */
+};
+
+/*
+ * This is the format the mroute daemon expects to see IGMP control
+ * data. Magically happens to be like an IP packet as per the original
+ */
+
+struct igmpmsg
+{
+ __u32 unused1,unused2;
+ unsigned char im_msgtype; /* What is this */
+ unsigned char im_mbz; /* Must be zero */
+ unsigned char im_vif; /* Interface (this ought to be a vifi_t!) */
+ unsigned char unused3;
+ struct in_addr im_src,im_dst;
+};
+
+/*
+ * That's all usermode folks
+ */
+
+#ifdef __KERNEL__
+#include <net/sock.h>
+
+extern int ip_mroute_setsockopt(struct sock *, int, char __user *, int);
+extern int ip_mroute_getsockopt(struct sock *, int, char __user *, int __user *);
+extern int ipmr_ioctl(struct sock *sk, int cmd, void __user *arg);
+extern void ip_mr_init(void);
+
+
+struct vif_device
+{
+ struct net_device *dev; /* Device we are using */
+ unsigned long bytes_in,bytes_out;
+ unsigned long pkt_in,pkt_out; /* Statistics */
+ unsigned long rate_limit; /* Traffic shaping (NI) */
+ unsigned char threshold; /* TTL threshold */
+ unsigned short flags; /* Control flags */
+ __u32 local,remote; /* Addresses(remote for tunnels)*/
+ int link; /* Physical interface index */
+};
+
+#define VIFF_STATIC 0x8000
+
+struct mfc_cache
+{
+ struct mfc_cache *next; /* Next entry on cache line */
+ __u32 mfc_mcastgrp; /* Group the entry belongs to */
+ __u32 mfc_origin; /* Source of packet */
+ vifi_t mfc_parent; /* Source interface */
+ int mfc_flags; /* Flags on line */
+
+ union {
+ struct {
+ unsigned long expires;
+ struct sk_buff_head unresolved; /* Unresolved buffers */
+ } unres;
+ struct {
+ unsigned long last_assert;
+ int minvif;
+ int maxvif;
+ unsigned long bytes;
+ unsigned long pkt;
+ unsigned long wrong_if;
+ unsigned char ttls[MAXVIFS]; /* TTL thresholds */
+ } res;
+ } mfc_un;
+};
+
+#define MFC_STATIC 1
+#define MFC_NOTIFY 2
+
+#define MFC_LINES 64
+
+#ifdef __BIG_ENDIAN
+#define MFC_HASH(a,b) ((((a)>>24)^((b)>>26))&(MFC_LINES-1))
+#else
+#define MFC_HASH(a,b) (((a)^((b)>>2))&(MFC_LINES-1))
+#endif
+
+#endif
+
+
+#define MFC_ASSERT_THRESH (3*HZ) /* Maximal freq. of asserts */
+
+/*
+ * Pseudo messages used by mrouted
+ */
+
+#define IGMPMSG_NOCACHE 1 /* Kern cache fill request to mrouted */
+#define IGMPMSG_WRONGVIF 2 /* For PIM assert processing (unused) */
+#define IGMPMSG_WHOLEPKT 3 /* For PIM Register processing */
+
+#ifdef __KERNEL__
+
+#define PIM_V1_VERSION __constant_htonl(0x10000000)
+#define PIM_V1_REGISTER 1
+
+#define PIM_VERSION 2
+#define PIM_REGISTER 1
+
+#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;
+ __u16 csum;
+ __u32 flags;
+};
+
+extern int pim_rcv_v1(struct sk_buff *);
+
+struct rtmsg;
+extern int ipmr_get_route(struct sk_buff *skb, struct rtmsg *rtm, int nowait);
+#endif
+
+#endif