v4.19.13 snapshot.
diff --git a/include/net/if_inet6.h b/include/net/if_inet6.h
new file mode 100644
index 0000000..d7578cf
--- /dev/null
+++ b/include/net/if_inet6.h
@@ -0,0 +1,265 @@
+/*
+ * inet6 interface/address list definitions
+ * Linux INET6 implementation
+ *
+ * Authors:
+ * Pedro Roque <roque@di.fc.ul.pt>
+ *
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#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
+
+/* prefix flags */
+#define IF_PREFIX_ONLINK 0x01
+#define IF_PREFIX_AUTOCONF 0x02
+
+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;
+
+ struct list_head tmp_list;
+ struct inet6_ifaddr *ifpub;
+ int regen_count;
+
+ bool tokenized;
+
+ struct rcu_head rcu;
+ struct in6_addr peer_addr;
+};
+
+struct ip6_sf_socklist {
+ unsigned int sl_max;
+ unsigned int sl_count;
+ struct in6_addr sl_addr[0];
+};
+
+#define IP6_SFLSIZE(count) (sizeof(struct ip6_sf_socklist) + \
+ (count) * sizeof(struct in6_addr))
+
+#define IP6_SFBLOCK 10 /* allocate this many at once */
+
+struct ipv6_mc_socklist {
+ struct in6_addr addr;
+ int ifindex;
+ struct ipv6_mc_socklist __rcu *next;
+ rwlock_t sflock;
+ unsigned int sfmode; /* MCAST_{INCLUDE,EXCLUDE} */
+ struct ip6_sf_socklist *sflist;
+ struct rcu_head rcu;
+};
+
+struct ip6_sf_list {
+ struct ip6_sf_list *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 */
+};
+
+#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 *next;
+ struct ip6_sf_list *mca_sources;
+ struct ip6_sf_list *mca_tomb;
+ unsigned int mca_sfmode;
+ unsigned char mca_crcount;
+ unsigned long mca_sfcount[2];
+ struct timer_list mca_timer;
+ unsigned int mca_flags;
+ int mca_users;
+ refcount_t mca_refcnt;
+ spinlock_t mca_lock;
+ unsigned long mca_cstamp;
+ unsigned long mca_tstamp;
+};
+
+/* 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 *aca_next;
+ int aca_users;
+ refcount_t aca_refcnt;
+ unsigned long aca_cstamp;
+ unsigned long aca_tstamp;
+};
+
+#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;
+
+ struct list_head addr_list;
+
+ struct ifmcaddr6 *mc_list;
+ struct ifmcaddr6 *mc_tomb;
+ spinlock_t mc_lock;
+
+ 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 timer_list mc_gq_timer; /* general query timer */
+ struct timer_list mc_ifc_timer; /* interface change timer */
+ struct timer_list mc_dad_timer; /* dad complete mc timer */
+
+ struct ifacaddr6 *ac_list;
+ rwlock_t lock;
+ refcount_t refcnt;
+ __u32 if_flags;
+ int dead;
+
+ u32 desync_factor;
+ u8 rndid[8];
+ 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;
+};
+
+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