/* SPDX-License-Identifier: GPL-2.0-or-later *//* *	inet6 interface/address list definitions *	Linux INET6 implementation  * *	Authors: *	Pedro Roque		<roque@di.fc.ul.pt>	 */ #ifndef _NET_IF_INET6_H#define _NET_IF_INET6_H #include <net/snmp.h>#include <linux/ipv6.h>#include <linux/refcount.h> /* inet6_dev.if_flags */ #define IF_RA_OTHERCONF	0x80#define IF_RA_MANAGED	0x40#define IF_RA_RCVD	0x20#define IF_RS_SENT	0x10#define IF_READY	0x80000000 enum {	INET6_IFADDR_STATE_PREDAD,	INET6_IFADDR_STATE_DAD,	INET6_IFADDR_STATE_POSTDAD,	INET6_IFADDR_STATE_ERRDAD,	INET6_IFADDR_STATE_DEAD,}; struct inet6_ifaddr {	struct in6_addr		addr;	__u32			prefix_len;	__u32			rt_priority; 	/* In seconds, relative to tstamp. Expiry is at tstamp + HZ * lft. */	__u32			valid_lft;	__u32			prefered_lft;	refcount_t		refcnt;	spinlock_t		lock; 	int			state; 	__u32			flags;	__u8			dad_probes;	__u8			stable_privacy_retry; 	__u16			scope;	__u64			dad_nonce; 	unsigned long		cstamp;	/* created timestamp */	unsigned long		tstamp; /* updated timestamp */ 	struct delayed_work	dad_work; 	struct inet6_dev	*idev;	struct fib6_info	*rt; 	struct hlist_node	addr_lst;	struct list_head	if_list;	/*	 * Used to safely traverse idev->addr_list in process context	 * if the idev->lock needed to protect idev->addr_list cannot be held.	 * In that case, add the items to this list temporarily and iterate	 * without holding idev->lock.	 * See addrconf_ifdown and dev_forward_change.	 */	struct list_head	if_list_aux; 	struct list_head	tmp_list;	struct inet6_ifaddr	*ifpub;	int			regen_count; 	bool			tokenized; 	u8			ifa_proto; 	struct rcu_head		rcu;	struct in6_addr		peer_addr;}; struct ip6_sf_socklist {	unsigned int		sl_max;	unsigned int		sl_count;	struct rcu_head		rcu;	struct in6_addr		sl_addr[] __counted_by(sl_max);}; struct ipv6_mc_socklist {	struct in6_addr		addr;	int			ifindex;	unsigned int		sfmode;		/* MCAST_{INCLUDE,EXCLUDE} */	struct ipv6_mc_socklist __rcu *next;	struct ip6_sf_socklist	__rcu *sflist;	struct rcu_head		rcu;}; struct ip6_sf_list {	struct ip6_sf_list __rcu *sf_next;	struct in6_addr		sf_addr;	unsigned long		sf_count[2];	/* include/exclude counts */	unsigned char		sf_gsresp;	/* include in g & s response? */	unsigned char		sf_oldin;	/* change state */	unsigned char		sf_crcount;	/* retrans. left to send */	struct rcu_head		rcu;}; #define MAF_TIMER_RUNNING	0x01#define MAF_LAST_REPORTER	0x02#define MAF_LOADED		0x04#define MAF_NOREPORT		0x08#define MAF_GSQUERY		0x10 struct ifmcaddr6 {	struct in6_addr		mca_addr;	struct inet6_dev	*idev;	struct ifmcaddr6	__rcu *next;	struct ip6_sf_list	__rcu *mca_sources;	struct ip6_sf_list	__rcu *mca_tomb;	unsigned int		mca_sfmode;	unsigned char		mca_crcount;	unsigned long		mca_sfcount[2];	struct delayed_work	mca_work;	unsigned int		mca_flags;	int			mca_users;	refcount_t		mca_refcnt;	unsigned long		mca_cstamp;	unsigned long		mca_tstamp;	struct rcu_head		rcu;}; /* Anycast stuff */ struct ipv6_ac_socklist {	struct in6_addr		acl_addr;	int			acl_ifindex;	struct ipv6_ac_socklist *acl_next;}; struct ifacaddr6 {	struct in6_addr		aca_addr;	struct fib6_info	*aca_rt;	struct ifacaddr6 __rcu	*aca_next;	struct hlist_node	aca_addr_lst;	int			aca_users;	refcount_t		aca_refcnt;	unsigned long		aca_cstamp;	unsigned long		aca_tstamp;	struct rcu_head		rcu;}; #define	IFA_HOST	IPV6_ADDR_LOOPBACK#define	IFA_LINK	IPV6_ADDR_LINKLOCAL#define	IFA_SITE	IPV6_ADDR_SITELOCAL struct ipv6_devstat {	struct proc_dir_entry	*proc_dir_entry;	DEFINE_SNMP_STAT(struct ipstats_mib, ipv6);	DEFINE_SNMP_STAT_ATOMIC(struct icmpv6_mib_device, icmpv6dev);	DEFINE_SNMP_STAT_ATOMIC(struct icmpv6msg_mib_device, icmpv6msgdev);}; struct inet6_dev {	struct net_device	*dev;	netdevice_tracker	dev_tracker; 	struct list_head	addr_list; 	struct ifmcaddr6	__rcu *mc_list;	struct ifmcaddr6	__rcu *mc_tomb; 	unsigned char		mc_qrv;		/* Query Robustness Variable */	unsigned char		mc_gq_running;	unsigned char		mc_ifc_count;	unsigned char		mc_dad_count; 	unsigned long		mc_v1_seen;	/* Max time we stay in MLDv1 mode */	unsigned long		mc_qi;		/* Query Interval */	unsigned long		mc_qri;		/* Query Response Interval */	unsigned long		mc_maxdelay; 	struct delayed_work	mc_gq_work;	/* general query work */	struct delayed_work	mc_ifc_work;	/* interface change work */	struct delayed_work	mc_dad_work;	/* dad complete mc work */	struct delayed_work	mc_query_work;	/* mld query work */	struct delayed_work	mc_report_work;	/* mld report work */ 	struct sk_buff_head	mc_query_queue;		/* mld query queue */	struct sk_buff_head	mc_report_queue;	/* mld report queue */ 	spinlock_t		mc_query_lock;	/* mld query queue lock */	spinlock_t		mc_report_lock;	/* mld query report lock */	struct mutex		mc_lock;	/* mld global lock */ 	struct ifacaddr6 __rcu	*ac_list;	rwlock_t		lock;	refcount_t		refcnt;	__u32			if_flags;	int			dead; 	u32			desync_factor;	struct list_head	tempaddr_list; 	struct in6_addr		token; 	struct neigh_parms	*nd_parms;	struct ipv6_devconf	cnf;	struct ipv6_devstat	stats; 	struct timer_list	rs_timer;	__s32			rs_interval;	/* in jiffies */	__u8			rs_probes; 	unsigned long		tstamp; /* ipv6InterfaceTable update timestamp */	struct rcu_head		rcu; 	unsigned int		ra_mtu;}; static inline void ipv6_eth_mc_map(const struct in6_addr *addr, char *buf){	/*	 *	+-------+-------+-------+-------+-------+-------+	 *      |   33  |   33  | DST13 | DST14 | DST15 | DST16 |	 *      +-------+-------+-------+-------+-------+-------+	 */ 	buf[0]= 0x33;	buf[1]= 0x33; 	memcpy(buf + 2, &addr->s6_addr32[3], sizeof(__u32));} static inline void ipv6_arcnet_mc_map(const struct in6_addr *addr, char *buf){	buf[0] = 0x00;} static inline void ipv6_ib_mc_map(const struct in6_addr *addr,				  const unsigned char *broadcast, char *buf){	unsigned char scope = broadcast[5] & 0xF; 	buf[0]  = 0;		/* Reserved */	buf[1]  = 0xff;		/* Multicast QPN */	buf[2]  = 0xff;	buf[3]  = 0xff;	buf[4]  = 0xff;	buf[5]  = 0x10 | scope;	/* scope from broadcast address */	buf[6]  = 0x60;		/* IPv6 signature */	buf[7]  = 0x1b;	buf[8]  = broadcast[8];	/* P_Key */	buf[9]  = broadcast[9];	memcpy(buf + 10, addr->s6_addr + 6, 10);} static inline int ipv6_ipgre_mc_map(const struct in6_addr *addr,				    const unsigned char *broadcast, char *buf){	if ((broadcast[0] | broadcast[1] | broadcast[2] | broadcast[3]) != 0) {		memcpy(buf, broadcast, 4);	} else {		/* v4mapped? */		if ((addr->s6_addr32[0] | addr->s6_addr32[1] |		     (addr->s6_addr32[2] ^ htonl(0x0000ffff))) != 0)			return -EINVAL;		memcpy(buf, &addr->s6_addr32[3], 4);	}	return 0;} #endif