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

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __LINUX_MROUTE_H
#define __LINUX_MROUTE_H

#include <linux/in.h>
#include <linux/pim.h>
#include <linux/rhashtable.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)

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 vif_device	vif_table[MAXVIFS];
	struct rhltable		mfc_hash;
	struct list_head	mfc_cache_list;
	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_cmp_arg {
	__be32 mfc_mcastgrp;
	__be32 mfc_origin;
};

/**
 * struct mfc_cache - multicast routing entries
 * @mnode: rhashtable list
 * @mfc_mcastgrp: destination multicast group address
 * @mfc_origin: source address
 * @cmparg: used for rhashtable comparisons
 * @mfc_parent: source interface (iif)
 * @mfc_flags: entry flags
 * @expires: unresolved entry expire time
 * @unresolved: unresolved cached skbs
 * @last_assert: time of last assert
 * @minvif: minimum VIF id
 * @maxvif: maximum VIF id
 * @bytes: bytes that have passed for this entry
 * @pkt: packets that have passed for this entry
 * @wrong_if: number of wrong source interface hits
 * @lastuse: time of last use of the group (traffic or update)
 * @ttls: OIF TTL threshold array
 * @list: global entry list
 * @rcu: used for entry destruction
 */
struct mfc_cache {
	struct rhlist_head mnode;
	union {
		struct {
			__be32 mfc_mcastgrp;
			__be32 mfc_origin;
		};
		struct mfc_cache_cmp_arg cmparg;
	};
	vifi_t mfc_parent;
	int mfc_flags;

	union {
		struct {
			unsigned long expires;
			struct sk_buff_head unresolved;
		} 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];
		} res;
	} mfc_un;
	struct list_head list;
	struct rcu_head	rcu;
};

struct rtmsg;
int ipmr_get_route(struct net *net, struct sk_buff *skb,
		   __be32 saddr, __be32 daddr,
		   struct rtmsg *rtm, u32 portid);
#endif
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
1da177e4 LT	2	#ifndef __LINUX_MROUTE_H
	3	#define __LINUX_MROUTE_H
	4
1da177e4	5	#include <linux/in.h>
7c19a3d2	6	#include <linux/pim.h>
8fb472c0	7	#include <linux/rhashtable.h>
1da177e4	8	#include <net/sock.h>
607ca46e	9	#include <uapi/linux/mroute.h>
1da177e4	10
6a9fb947 PE	11	#ifdef CONFIG_IP_MROUTE
	12	static inline int ip_mroute_opt(int opt)
	13	{
520191bb	14	return opt >= MRT_BASE && opt <= MRT_MAX;
6a9fb947	15	}
6a9fb947	16
520191bb NA	17	int ip_mroute_setsockopt(struct sock , int, char __user , unsigned int);
	18	int ip_mroute_getsockopt(struct sock , int, char __user , int __user *);
	19	int ipmr_ioctl(struct sock sk, int cmd, void __user arg);
	20	int ipmr_compat_ioctl(struct sock sk, unsigned int cmd, void __user arg);
	21	int ip_mr_init(void);
e0835f8f	22	#else
520191bb NA	23	static inline int ip_mroute_setsockopt(struct sock *sock, int optname,
520191bb NA	24	char __user *optval, unsigned int optlen)
e0835f8f YH	25	{
	26	return -ENOPROTOOPT;
	27	}
	28
520191bb NA	29	static inline int ip_mroute_getsockopt(struct sock *sock, int optname,
520191bb NA	30	char __user optval, int __user optlen)
e0835f8f YH	31	{
	32	return -ENOPROTOOPT;
	33	}
	34
520191bb	35	static inline int ipmr_ioctl(struct sock sk, int cmd, void __user arg)
e0835f8f YH	36	{
	37	return -ENOIOCTLCMD;
	38	}
	39
	40	static inline int ip_mr_init(void)
	41	{
	42	return 0;
	43	}
520191bb NA	44
	45	static inline int ip_mroute_opt(int opt)
	46	{
	47	return 0;
	48	}
e0835f8f	49	#endif
1da177e4	50
d94d9fee	51	struct vif_device {
1da177e4 LT	52	struct net_device dev; / Device we are using */
	53	unsigned long bytes_in,bytes_out;
	54	unsigned long pkt_in,pkt_out; /* Statistics */
	55	unsigned long rate_limit; /* Traffic shaping (NI) */
	56	unsigned char threshold; /* TTL threshold */
	57	unsigned short flags; /* Control flags */
114c7844	58	__be32 local,remote; /* Addresses(remote for tunnels)*/
1da177e4 LT	59	int link; /* Physical interface index */
	60	};
	61
	62	#define VIFF_STATIC 0x8000
	63
5ea1f132	64	#define VIF_EXISTS(_mrt, _idx) ((_mrt)->vif_table[_idx].dev != NULL)
5ea1f132 NA	65
	66	struct mr_table {
	67	struct list_head list;
	68	possible_net_t net;
	69	u32 id;
	70	struct sock __rcu *mroute_sk;
	71	struct timer_list ipmr_expire_timer;
	72	struct list_head mfc_unres_queue;
5ea1f132	73	struct vif_device vif_table[MAXVIFS];
8fb472c0 NA	74	struct rhltable mfc_hash;
8fb472c0 NA	75	struct list_head mfc_cache_list;
5ea1f132 NA	76	int maxvif;
	77	atomic_t cache_resolve_queue_len;
	78	bool mroute_do_assert;
	79	bool mroute_do_pim;
	80	int mroute_reg_vif_num;
	81	};
	82
06bd6c03 NA	83	/* mfc_flags:
	84	* MFC_STATIC - the entry was added statically (not by a routing daemon)
	85	*/
	86	enum {
	87	MFC_STATIC = BIT(0),
	88	};
	89
8fb472c0 NA	90	struct mfc_cache_cmp_arg {
	91	__be32 mfc_mcastgrp;
	92	__be32 mfc_origin;
	93	};
	94
	95	/**
	96	* struct mfc_cache - multicast routing entries
	97	* @mnode: rhashtable list
	98	* @mfc_mcastgrp: destination multicast group address
	99	* @mfc_origin: source address
	100	* @cmparg: used for rhashtable comparisons
	101	* @mfc_parent: source interface (iif)
	102	* @mfc_flags: entry flags
	103	* @expires: unresolved entry expire time
	104	* @unresolved: unresolved cached skbs
	105	* @last_assert: time of last assert
	106	* @minvif: minimum VIF id
	107	* @maxvif: maximum VIF id
	108	* @bytes: bytes that have passed for this entry
	109	* @pkt: packets that have passed for this entry
	110	* @wrong_if: number of wrong source interface hits
	111	* @lastuse: time of last use of the group (traffic or update)
	112	* @ttls: OIF TTL threshold array
	113	* @list: global entry list
	114	* @rcu: used for entry destruction
	115	*/
d94d9fee	116	struct mfc_cache {
8fb472c0 NA	117	struct rhlist_head mnode;
	118	union {
	119	struct {
	120	__be32 mfc_mcastgrp;
	121	__be32 mfc_origin;
	122	};
	123	struct mfc_cache_cmp_arg cmparg;
	124	};
	125	vifi_t mfc_parent;
	126	int mfc_flags;
1da177e4 LT	127
	128	union {
	129	struct {
	130	unsigned long expires;
8fb472c0	131	struct sk_buff_head unresolved;
1da177e4 LT	132	} unres;
	133	struct {
	134	unsigned long last_assert;
	135	int minvif;
	136	int maxvif;
	137	unsigned long bytes;
	138	unsigned long pkt;
	139	unsigned long wrong_if;
43b9e127	140	unsigned long lastuse;
8fb472c0	141	unsigned char ttls[MAXVIFS];
1da177e4 LT	142	} res;
1da177e4 LT	143	} mfc_un;
8fb472c0	144	struct list_head list;
a8c9486b	145	struct rcu_head rcu;
1da177e4 LT	146	};
1da177e4 LT	147
1da177e4	148	struct rtmsg;
520191bb NA	149	int ipmr_get_route(struct net net, struct sk_buff skb,
520191bb NA	150	__be32 saddr, __be32 daddr,
9f09eaea	151	struct rtmsg *rtm, u32 portid);
1da177e4	152	#endif