277 lines
6.6 KiB
C
277 lines
6.6 KiB
C
/* 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);
|
|
};
|
|
|
|
#define IP6_SFBLOCK 10 /* allocate this many at once */
|
|
|
|
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
|