[linux-2.6-block.git] / include / linux / mroute.h

#ifndef __LINUX_MROUTE_H
#define __LINUX_MROUTE_H

#include <linux/in.h>
#include <linux/pim.h>
#include <net/sock.h>
#include <uapi/linux/mroute.h>

#ifdef CONFIG_IP_MROUTE
static inline int ip_mroute_opt(int opt)
{
	return opt >= MRT_BASE && opt <= MRT_MAX;
}

int ip_mroute_setsockopt(struct sock *, int, char __user *, unsigned int);
int ip_mroute_getsockopt(struct sock *, int, char __user *, int __user *);
int ipmr_ioctl(struct sock *sk, int cmd, void __user *arg);
int ipmr_compat_ioctl(struct sock *sk, unsigned int cmd, void __user *arg);
int ip_mr_init(void);
#else
static inline int ip_mroute_setsockopt(struct sock *sock, int optname,
				       char __user *optval, unsigned int optlen)
{
	return -ENOPROTOOPT;
}

static inline int ip_mroute_getsockopt(struct sock *sock, int optname,
				       char __user *optval, int __user *optlen)
{
	return -ENOPROTOOPT;
}

static inline int ipmr_ioctl(struct sock *sk, int cmd, void __user *arg)
{
	return -ENOIOCTLCMD;
}

static inline int ip_mr_init(void)
{
	return 0;
}

static inline int ip_mroute_opt(int opt)
{
	return 0;
}
#endif

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 		*/
	__be32		local,remote;		/* Addresses(remote for tunnels)*/
	int		link;			/* Physical interface index	*/
};

#define VIFF_STATIC 0x8000

#define VIF_EXISTS(_mrt, _idx) ((_mrt)->vif_table[_idx].dev != NULL)
#define MFC_LINES 64

struct mr_table {
	struct list_head	list;
	possible_net_t		net;
	u32			id;
	struct sock __rcu	*mroute_sk;
	struct timer_list	ipmr_expire_timer;
	struct list_head	mfc_unres_queue;
	struct list_head	mfc_cache_array[MFC_LINES];
	struct vif_device	vif_table[MAXVIFS];
	int			maxvif;
	atomic_t		cache_resolve_queue_len;
	bool			mroute_do_assert;
	bool			mroute_do_pim;
	int			mroute_reg_vif_num;
};

/* mfc_flags:
 * MFC_STATIC - the entry was added statically (not by a routing daemon)
 */
enum {
	MFC_STATIC = BIT(0),
};

struct mfc_cache {
	struct list_head list;
	__be32 mfc_mcastgrp;			/* Group the entry belongs to 	*/
	__be32 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 long lastuse;
			unsigned char ttls[MAXVIFS];	/* TTL thresholds		*/
		} res;
	} mfc_un;
	struct rcu_head	rcu;
};

#ifdef __BIG_ENDIAN
#define MFC_HASH(a,b)	(((((__force u32)(__be32)a)>>24)^(((__force u32)(__be32)b)>>26))&(MFC_LINES-1))
#else
#define MFC_HASH(a,b)	((((__force u32)(__be32)a)^(((__force u32)(__be32)b)>>2))&(MFC_LINES-1))
#endif

struct rtmsg;
int ipmr_get_route(struct net *net, struct sk_buff *skb,
		   __be32 saddr, __be32 daddr,
		   struct rtmsg *rtm, int nowait);
#endif
Commit	Line	Data
1da177e4 LT	1	#ifndef __LINUX_MROUTE_H
	2	#define __LINUX_MROUTE_H
	3
1da177e4	4	#include <linux/in.h>
7c19a3d2	5	#include <linux/pim.h>
1da177e4	6	#include <net/sock.h>
607ca46e	7	#include <uapi/linux/mroute.h>
1da177e4	8
6a9fb947 PE	9	#ifdef CONFIG_IP_MROUTE
	10	static inline int ip_mroute_opt(int opt)
	11	{
520191bb	12	return opt >= MRT_BASE && opt <= MRT_MAX;
6a9fb947	13	}
6a9fb947	14
520191bb NA	15	int ip_mroute_setsockopt(struct sock , int, char __user , unsigned int);
	16	int ip_mroute_getsockopt(struct sock , int, char __user , int __user *);
	17	int ipmr_ioctl(struct sock sk, int cmd, void __user arg);
	18	int ipmr_compat_ioctl(struct sock sk, unsigned int cmd, void __user arg);
	19	int ip_mr_init(void);
e0835f8f	20	#else
520191bb NA	21	static inline int ip_mroute_setsockopt(struct sock *sock, int optname,
520191bb NA	22	char __user *optval, unsigned int optlen)
e0835f8f YH	23	{
	24	return -ENOPROTOOPT;
	25	}
	26
520191bb NA	27	static inline int ip_mroute_getsockopt(struct sock *sock, int optname,
520191bb NA	28	char __user optval, int __user optlen)
e0835f8f YH	29	{
	30	return -ENOPROTOOPT;
	31	}
	32
520191bb	33	static inline int ipmr_ioctl(struct sock sk, int cmd, void __user arg)
e0835f8f YH	34	{
	35	return -ENOIOCTLCMD;
	36	}
	37
	38	static inline int ip_mr_init(void)
	39	{
	40	return 0;
	41	}
520191bb NA	42
	43	static inline int ip_mroute_opt(int opt)
	44	{
	45	return 0;
	46	}
e0835f8f	47	#endif
1da177e4	48
d94d9fee	49	struct vif_device {
1da177e4 LT	50	struct net_device dev; / Device we are using */
	51	unsigned long bytes_in,bytes_out;
	52	unsigned long pkt_in,pkt_out; /* Statistics */
	53	unsigned long rate_limit; /* Traffic shaping (NI) */
	54	unsigned char threshold; /* TTL threshold */
	55	unsigned short flags; /* Control flags */
114c7844	56	__be32 local,remote; /* Addresses(remote for tunnels)*/
1da177e4 LT	57	int link; /* Physical interface index */
	58	};
	59
	60	#define VIFF_STATIC 0x8000
	61
5ea1f132 NA	62	#define VIF_EXISTS(_mrt, _idx) ((_mrt)->vif_table[_idx].dev != NULL)
	63	#define MFC_LINES 64
	64
	65	struct mr_table {
	66	struct list_head list;
	67	possible_net_t net;
	68	u32 id;
	69	struct sock __rcu *mroute_sk;
	70	struct timer_list ipmr_expire_timer;
	71	struct list_head mfc_unres_queue;
	72	struct list_head mfc_cache_array[MFC_LINES];
	73	struct vif_device vif_table[MAXVIFS];
	74	int maxvif;
	75	atomic_t cache_resolve_queue_len;
	76	bool mroute_do_assert;
	77	bool mroute_do_pim;
	78	int mroute_reg_vif_num;
	79	};
	80
06bd6c03 NA	81	/* mfc_flags:
	82	* MFC_STATIC - the entry was added statically (not by a routing daemon)
	83	*/
	84	enum {
	85	MFC_STATIC = BIT(0),
	86	};
	87
d94d9fee	88	struct mfc_cache {
862465f2	89	struct list_head list;
114c7844 AV	90	__be32 mfc_mcastgrp; /* Group the entry belongs to */
114c7844 AV	91	__be32 mfc_origin; /* Source of packet */
1da177e4 LT	92	vifi_t mfc_parent; /* Source interface */
	93	int mfc_flags; /* Flags on line */
	94
	95	union {
	96	struct {
	97	unsigned long expires;
	98	struct sk_buff_head unresolved; /* Unresolved buffers */
	99	} unres;
	100	struct {
	101	unsigned long last_assert;
	102	int minvif;
	103	int maxvif;
	104	unsigned long bytes;
	105	unsigned long pkt;
	106	unsigned long wrong_if;
43b9e127	107	unsigned long lastuse;
1da177e4 LT	108	unsigned char ttls[MAXVIFS]; /* TTL thresholds */
	109	} res;
	110	} mfc_un;
a8c9486b	111	struct rcu_head rcu;
1da177e4 LT	112	};
1da177e4 LT	113
1da177e4	114	#ifdef __BIG_ENDIAN
114c7844	115	#define MFC_HASH(a,b) (((((__force u32)(__be32)a)>>24)^(((__force u32)(__be32)b)>>26))&(MFC_LINES-1))
1da177e4	116	#else
114c7844	117	#define MFC_HASH(a,b) ((((__force u32)(__be32)a)^(((__force u32)(__be32)b)>>2))&(MFC_LINES-1))
520191bb	118	#endif
1da177e4	119
1da177e4	120	struct rtmsg;
520191bb NA	121	int ipmr_get_route(struct net net, struct sk_buff skb,
	122	__be32 saddr, __be32 daddr,
	123	struct rtmsg *rtm, int nowait);
1da177e4	124	#endif