#ifndef __LINUX_MROUTE6_H
#define __LINUX_MROUTE6_H
#include <linux/types.h>
#include <linux/sockios.h>
/*
* Based on the MROUTING 3.5 defines primarily to keep
* source compatibility with BSD.
*
* See the pim6sd code for the original history.
*
* Protocol Independent Multicast (PIM) data structures included
* Carlos Picoto (cap@di.fc.ul.pt)
*
*/
#define MRT6_BASE 200
#define MRT6_INIT (MRT6_BASE) /* Activate the kernel mroute code */
#define MRT6_DONE (MRT6_BASE+1) /* Shutdown the kernel mroute */
#define MRT6_ADD_MIF (MRT6_BASE+2) /* Add a virtual interface */
#define MRT6_DEL_MIF (MRT6_BASE+3) /* Delete a virtual interface */
#define MRT6_ADD_MFC (MRT6_BASE+4) /* Add a multicast forwarding entry */
#define MRT6_DEL_MFC (MRT6_BASE+5) /* Delete a multicast forwarding entry */
#define MRT6_VERSION (MRT6_BASE+6) /* Get the kernel multicast version */
#define MRT6_ASSERT (MRT6_BASE+7) /* Activate PIM assert mode */
#define MRT6_PIM (MRT6_BASE+8) /* enable PIM code */
#define SIOCGETMIFCNT_IN6 SIOCPROTOPRIVATE /* IP protocol privates */
#define SIOCGETSGCNT_IN6 (SIOCPROTOPRIVATE+1)
#define SIOCGETRPF (SIOCPROTOPRIVATE+2)
#define MAXMIFS 32
typedef unsigned long mifbitmap_t; /* User mode code depends on this lot */
typedef unsigned short mifi_t;
#define ALL_MIFS ((mifi_t)(-1))
#ifndef IF_SETSIZE
#define IF_SETSIZE 256
#endif
typedef __u32 if_mask;
#define NIFBITS (sizeof(if_mask) * 8) /* bits per mask */
#if !defined(__KERNEL__) && !defined(DIV_ROUND_UP)
#define DIV_ROUND_UP(x,y) (((x) + ((y) - 1)) / (y))
#endif
typedef struct if_set {
if_mask ifs_bits[DIV_ROUND_UP(IF_SETSIZE, NIFBITS)];
} if_set;
#define IF_SET(n, p) ((p)->ifs_bits[(n)/NIFBITS] |= (1 << ((n) % NIFBITS)))
#define IF_CLR(n, p) ((p)->ifs_bits[(n)/NIFBITS] &= ~(1 << ((n) % NIFBITS)))
#define IF_ISSET(n, p) ((p)->ifs_bits[(n)/NIFBITS] & (1 << ((n) % NIFBITS)))
#define IF_COPY(f, t) bcopy(f, t, sizeof(*(f)))
#define IF_ZERO(p) bzero(p, sizeof(*(p)))
/*
* Passed by mrouted for an MRT_ADD_MIF - again we use the
* mrouted 3.6 structures for compatibility
*/
struct mif6ctl {
mifi_t mif6c_mifi; /* Index of MIF */
unsigned char mif6c_flags; /* MIFF_ flags */
unsigned char vifc_threshold; /* ttl limit */
u_short mif6c_pifi; /* the index of the physical IF */
unsigned int vifc_rate_limit; /* Rate limiter values (NI) */
};
#define MIFF_REGISTER 0x1 /* register vif */
/*
* Cache manipulation structures for mrouted and PIMd
*/
struct mf6cctl
{
struct sockaddr_in6 mf6cc_origin; /* Origin of mcast */
struct sockaddr_in6 mf6cc_mcastgrp; /* Group in question */
mifi_t mf6cc_parent; /* Where it arrived */
struct if_set mf6cc_ifset; /* Where it is going */
};
/*
* Group count retrieval for pim6sd
*/
struct sioc_sg_req6
{
struct sockaddr_in6 src;
struct sockaddr_in6 grp;
unsigned long pktcnt;
unsigned long bytecnt;
unsigned long wrong_if;
};
/*
* To get vif packet counts
*/
struct sioc_mif_req6
{
mifi_t mifi; /* Which iface */
unsigned long icount; /* In packets */
unsigned long ocount; /* Out packets */
unsigned long ibytes; /* In bytes */
unsigned long obytes; /* Out bytes */
};
/*
* That's all usermode folks
*/
#ifdef __KERNEL__
#include <linux/skbuff.h> /* for struct sk_buff_head */
#ifdef CONFIG_IPV6_MROUTE
static inline int ip6_mroute_opt(int opt)
{
return (opt >= MRT6_BASE) && (opt <= MRT6_BASE + 10);
}
#else
static inline int ip6_mroute_opt(int opt)
{
return 0;
}
#endif
struct sock;
extern int ip6_mroute_setsockopt(struct sock *, int, char __user *, int);
extern int ip6_mroute_getsockopt(struct sock *, int, char __user *, int __user *);
extern int ip6_mr_input(struct sk_buff *skb);
extern int ip6mr_ioctl(struct sock *sk, int cmd, void __user *arg);
extern void ip6_mr_init(void);
struct mif_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 */
int link; /* Physical interface index */
};
#define VIFF_STATIC 0x8000
struct mfc6_cache
{
struct mfc6_cache *next; /* Next entry on cache line */
struct in6_addr mf6c_mcastgrp; /* Group the entry belongs to */
struct in6_addr mf6c_origin; /* Source of packet */
mifi_t mf6c_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[MAXMIFS]; /* TTL thresholds */
} res;
} mfc_un;
};
#define MFC_STATIC 1
#define MFC_NOTIFY 2
#define MFC6_LINES 64
#define MFC6_HASH(a, g) (((__force u32)(a)->s6_addr32[0] ^ \
(__force u32)(a)->s6_addr32[1] ^ \
(__force u32)(a)->s6_addr32[2] ^ \
(__force u32)(a)->s6_addr32[3] ^ \
(__force u32)(g)->s6_addr32[0] ^ \
(__force u32)(g)->s6_addr32[1] ^ \
(__force u32)(g)->s6_addr32[2] ^ \
(__force u32)(g)->s6_addr32[3]) % MFC6_LINES)
#define MFC_ASSERT_THRESH (3*HZ) /* Maximal freq. of asserts */
#endif
#ifdef __KERNEL__
struct rtmsg;
extern int ip6mr_get_route(struct sk_buff *skb, struct rtmsg *rtm, int nowait);
#ifdef CONFIG_IPV6_MROUTE
extern struct sock *mroute6_socket;
extern int ip6mr_sk_done(struct sock *sk);
#else
#define mroute6_socket NULL
static inline int ip6mr_sk_done(struct sock *sk) { return 0; }
#endif
#endif
/*
* Structure used to communicate from kernel to multicast router.
* We'll overlay the structure onto an MLD header (not an IPv6 heder like igmpmsg{}
* used for IPv4 implementation). This is because this structure will be passed via an
* IPv6 raw socket, on wich an application will only receiver the payload i.e the data after
* the IPv6 header and all the extension headers. (See section 3 of RFC 3542)
*/
struct mrt6msg {
#define MRT6MSG_NOCACHE 1
#define MRT6MSG_WRONGMIF 2
#define MRT6MSG_WHOLEPKT 3 /* used for use level encap */
__u8 im6_mbz; /* must be zero */
__u8 im6_msgtype; /* what type of message */
__u16 im6_mif; /* mif rec'd on */
__u32 im6_pad; /* padding for 64 bit arch */
struct in6_addr im6_src, im6_dst;
};
#endif
