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#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__
extern struct sock *mroute_socket;
extern int ip_mroute_setsockopt(struct sock *, int, char *, int);
extern int ip_mroute_getsockopt(struct sock *, int, char *, int *);
extern int ipmr_ioctl(struct sock *sk, int cmd, unsigned long arg);
extern void mroute_close(struct sock *sk);
extern void ipmr_forward(struct sk_buff *skb, int is_frag);
extern int ip_mr_find_tunnel(__u32, __u32);
extern void ip_mr_init(void);
struct vif_device
{
struct 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 */
};
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 */
struct timer_list mfc_timer; /* Expiry timer */
int mfc_flags; /* Flags on line */
struct sk_buff_head mfc_unresolved; /* Unresolved buffers */
int mfc_queuelen; /* Unresolved buffer counter */
unsigned long mfc_last_assert;
int mfc_minvif;
int mfc_maxvif;
unsigned long mfc_bytes;
unsigned long mfc_pkt;
unsigned long mfc_wrong_if;
unsigned char mfc_ttls[MAXVIFS]; /* TTL thresholds */
};
#define MFC_QUEUED 1
#define MFC_RESOLVED 2
#define MFC_NOTIFY 4
#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(struct sk_buff * , unsigned short);
extern int pim_rcv_v1(struct sk_buff * , unsigned short len);
struct rtmsg;
extern int ipmr_get_route(struct sk_buff *skb, struct rtmsg *rtm, int nowait);
#endif
#endif
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