[mirror_ubuntu-bionic-kernel.git] / include / linux / mroute6.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __LINUX_MROUTE6_H
#define __LINUX_MROUTE6_H


#include <linux/pim.h>
#include <linux/skbuff.h>	/* for struct sk_buff_head */
#include <net/net_namespace.h>
#include <uapi/linux/mroute6.h>

#ifdef CONFIG_IPV6_MROUTE
static inline int ip6_mroute_opt(int opt)
{
	return (opt >= MRT6_BASE) && (opt <= MRT6_MAX);
}
#else
static inline int ip6_mroute_opt(int opt)
{
	return 0;
}
#endif

struct sock;

#ifdef CONFIG_IPV6_MROUTE
extern int ip6_mroute_setsockopt(struct sock *, int, char __user *, unsigned 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 int ip6mr_compat_ioctl(struct sock *sk, unsigned int cmd, void __user *arg);
extern int ip6_mr_init(void);
extern void ip6_mr_cleanup(void);
#else
static inline
int ip6_mroute_setsockopt(struct sock *sock,
			  int optname, char __user *optval, unsigned int optlen)
{
	return -ENOPROTOOPT;
}

static inline
int ip6_mroute_getsockopt(struct sock *sock,
			  int optname, char __user *optval, int __user *optlen)
{
	return -ENOPROTOOPT;
}

static inline
int ip6mr_ioctl(struct sock *sk, int cmd, void __user *arg)
{
	return -ENOIOCTLCMD;
}

static inline int ip6_mr_init(void)
{
	return 0;
}

static inline void ip6_mr_cleanup(void)
{
	return;
}
#endif

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 list_head list;
	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 long lastuse;
			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 */

struct rtmsg;
extern int ip6mr_get_route(struct net *net, struct sk_buff *skb,
			   struct rtmsg *rtm, u32 portid);

#ifdef CONFIG_IPV6_MROUTE
extern struct sock *mroute6_socket(struct net *net, struct sk_buff *skb);
extern int ip6mr_sk_done(struct sock *sk);
#else
static inline struct sock *mroute6_socket(struct net *net, struct sk_buff *skb)
{
	return NULL;
}
static inline int ip6mr_sk_done(struct sock *sk)
{
	return 0;
}
#endif
#endif
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
7bc570c8 YH	2	#ifndef __LINUX_MROUTE6_H
	3	#define __LINUX_MROUTE6_H
	4
7bc570c8	5
7c19a3d2	6	#include <linux/pim.h>
7bc570c8	7	#include <linux/skbuff.h> /* for struct sk_buff_head */
bd91b8bf	8	#include <net/net_namespace.h>
607ca46e	9	#include <uapi/linux/mroute6.h>
7bc570c8	10
7bc570c8 YH	11	#ifdef CONFIG_IPV6_MROUTE
	12	static inline int ip6_mroute_opt(int opt)
	13	{
bbb923a4	14	return (opt >= MRT6_BASE) && (opt <= MRT6_MAX);
7bc570c8 YH	15	}
	16	#else
	17	static inline int ip6_mroute_opt(int opt)
	18	{
	19	return 0;
	20	}
	21	#endif
	22
	23	struct sock;
	24
e0835f8f	25	#ifdef CONFIG_IPV6_MROUTE
b7058842	26	extern int ip6_mroute_setsockopt(struct sock , int, char __user , unsigned int);
7bc570c8 YH	27	extern int ip6_mroute_getsockopt(struct sock , int, char __user , int __user *);
	28	extern int ip6_mr_input(struct sk_buff *skb);
	29	extern int ip6mr_ioctl(struct sock sk, int cmd, void __user arg);
e2d57766	30	extern int ip6mr_compat_ioctl(struct sock sk, unsigned int cmd, void __user arg);
623d1a1a WC	31	extern int ip6_mr_init(void);
623d1a1a WC	32	extern void ip6_mr_cleanup(void);
e0835f8f YH	33	#else
	34	static inline
	35	int ip6_mroute_setsockopt(struct sock *sock,
b7058842	36	int optname, char __user *optval, unsigned int optlen)
e0835f8f YH	37	{
	38	return -ENOPROTOOPT;
	39	}
	40
	41	static inline
	42	int ip6_mroute_getsockopt(struct sock *sock,
	43	int optname, char __user optval, int __user optlen)
	44	{
	45	return -ENOPROTOOPT;
	46	}
	47
	48	static inline
	49	int ip6mr_ioctl(struct sock sk, int cmd, void __user arg)
	50	{
	51	return -ENOIOCTLCMD;
	52	}
	53
	54	static inline int ip6_mr_init(void)
	55	{
	56	return 0;
	57	}
	58
	59	static inline void ip6_mr_cleanup(void)
	60	{
	61	return;
	62	}
	63	#endif
7bc570c8	64
d94d9fee	65	struct mif_device {
7bc570c8 YH	66	struct net_device dev; / Device we are using */
	67	unsigned long bytes_in,bytes_out;
	68	unsigned long pkt_in,pkt_out; /* Statistics */
	69	unsigned long rate_limit; /* Traffic shaping (NI) */
	70	unsigned char threshold; /* TTL threshold */
	71	unsigned short flags; /* Control flags */
	72	int link; /* Physical interface index */
	73	};
	74
	75	#define VIFF_STATIC 0x8000
	76
d94d9fee	77	struct mfc6_cache {
f30a7784	78	struct list_head list;
7bc570c8 YH	79	struct in6_addr mf6c_mcastgrp; /* Group the entry belongs to */
	80	struct in6_addr mf6c_origin; /* Source of packet */
	81	mifi_t mf6c_parent; /* Source interface */
	82	int mfc_flags; /* Flags on line */
	83
	84	union {
	85	struct {
	86	unsigned long expires;
	87	struct sk_buff_head unresolved; /* Unresolved buffers */
	88	} unres;
	89	struct {
	90	unsigned long last_assert;
	91	int minvif;
	92	int maxvif;
	93	unsigned long bytes;
	94	unsigned long pkt;
	95	unsigned long wrong_if;
43b9e127	96	unsigned long lastuse;
7bc570c8 YH	97	unsigned char ttls[MAXMIFS]; /* TTL thresholds */
	98	} res;
	99	} mfc_un;
	100	};
	101
	102	#define MFC_STATIC 1
	103	#define MFC_NOTIFY 2
	104
	105	#define MFC6_LINES 64
	106
	107	#define MFC6_HASH(a, g) (((__force u32)(a)->s6_addr32[0] ^ \
	108	(__force u32)(a)->s6_addr32[1] ^ \
	109	(__force u32)(a)->s6_addr32[2] ^ \
	110	(__force u32)(a)->s6_addr32[3] ^ \
	111	(__force u32)(g)->s6_addr32[0] ^ \
	112	(__force u32)(g)->s6_addr32[1] ^ \
	113	(__force u32)(g)->s6_addr32[2] ^ \
	114	(__force u32)(g)->s6_addr32[3]) % MFC6_LINES)
	115
	116	#define MFC_ASSERT_THRESH (3HZ) / Maximal freq. of asserts */
	117
7bc570c8	118	struct rtmsg;
8229efda	119	extern int ip6mr_get_route(struct net net, struct sk_buff skb,
fd61c6ba	120	struct rtmsg *rtm, u32 portid);
7bc570c8 YH	121
7bc570c8 YH	122	#ifdef CONFIG_IPV6_MROUTE
d1db275d	123	extern struct sock mroute6_socket(struct net net, struct sk_buff *skb);
7bc570c8 YH	124	extern int ip6mr_sk_done(struct sock *sk);
7bc570c8 YH	125	#else
d1db275d PM	126	static inline struct sock mroute6_socket(struct net net, struct sk_buff *skb)
	127	{
	128	return NULL;
	129	}
	130	static inline int ip6mr_sk_done(struct sock *sk)
	131	{
	132	return 0;
	133	}
7bc570c8 YH	134	#endif
7bc570c8 YH	135	#endif