File-copy from v4.4.100
This is the result of 'cp' from a linux-stable tree with the 'v4.4.100'
tag checked out (commit 26d6298789e695c9f627ce49a7bbd2286405798a) on
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Please refer to that tree for all history prior to this point.
Change-Id: I8a9ee2aea93cd29c52c847d0ce33091a73ae6afe
diff --git a/include/net/dn_fib.h b/include/net/dn_fib.h
new file mode 100644
index 0000000..f2ca135
--- /dev/null
+++ b/include/net/dn_fib.h
@@ -0,0 +1,165 @@
+#ifndef _NET_DN_FIB_H
+#define _NET_DN_FIB_H
+
+#include <linux/netlink.h>
+
+extern const struct nla_policy rtm_dn_policy[];
+
+struct dn_fib_res {
+ struct fib_rule *r;
+ struct dn_fib_info *fi;
+ unsigned char prefixlen;
+ unsigned char nh_sel;
+ unsigned char type;
+ unsigned char scope;
+};
+
+struct dn_fib_nh {
+ struct net_device *nh_dev;
+ unsigned int nh_flags;
+ unsigned char nh_scope;
+ int nh_weight;
+ int nh_power;
+ int nh_oif;
+ __le16 nh_gw;
+};
+
+struct dn_fib_info {
+ struct dn_fib_info *fib_next;
+ struct dn_fib_info *fib_prev;
+ int fib_treeref;
+ atomic_t fib_clntref;
+ int fib_dead;
+ unsigned int fib_flags;
+ int fib_protocol;
+ __le16 fib_prefsrc;
+ __u32 fib_priority;
+ __u32 fib_metrics[RTAX_MAX];
+ int fib_nhs;
+ int fib_power;
+ struct dn_fib_nh fib_nh[0];
+#define dn_fib_dev fib_nh[0].nh_dev
+};
+
+
+#define DN_FIB_RES_RESET(res) ((res).nh_sel = 0)
+#define DN_FIB_RES_NH(res) ((res).fi->fib_nh[(res).nh_sel])
+
+#define DN_FIB_RES_PREFSRC(res) ((res).fi->fib_prefsrc ? : __dn_fib_res_prefsrc(&res))
+#define DN_FIB_RES_GW(res) (DN_FIB_RES_NH(res).nh_gw)
+#define DN_FIB_RES_DEV(res) (DN_FIB_RES_NH(res).nh_dev)
+#define DN_FIB_RES_OIF(res) (DN_FIB_RES_NH(res).nh_oif)
+
+typedef struct {
+ __le16 datum;
+} dn_fib_key_t;
+
+typedef struct {
+ __le16 datum;
+} dn_fib_hash_t;
+
+typedef struct {
+ __u16 datum;
+} dn_fib_idx_t;
+
+struct dn_fib_node {
+ struct dn_fib_node *fn_next;
+ struct dn_fib_info *fn_info;
+#define DN_FIB_INFO(f) ((f)->fn_info)
+ dn_fib_key_t fn_key;
+ u8 fn_type;
+ u8 fn_scope;
+ u8 fn_state;
+};
+
+
+struct dn_fib_table {
+ struct hlist_node hlist;
+ u32 n;
+
+ int (*insert)(struct dn_fib_table *t, struct rtmsg *r,
+ struct nlattr *attrs[], struct nlmsghdr *n,
+ struct netlink_skb_parms *req);
+ int (*delete)(struct dn_fib_table *t, struct rtmsg *r,
+ struct nlattr *attrs[], struct nlmsghdr *n,
+ struct netlink_skb_parms *req);
+ int (*lookup)(struct dn_fib_table *t, const struct flowidn *fld,
+ struct dn_fib_res *res);
+ int (*flush)(struct dn_fib_table *t);
+ int (*dump)(struct dn_fib_table *t, struct sk_buff *skb, struct netlink_callback *cb);
+
+ unsigned char data[0];
+};
+
+#ifdef CONFIG_DECNET_ROUTER
+/*
+ * dn_fib.c
+ */
+void dn_fib_init(void);
+void dn_fib_cleanup(void);
+
+int dn_fib_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);
+struct dn_fib_info *dn_fib_create_info(const struct rtmsg *r,
+ struct nlattr *attrs[],
+ const struct nlmsghdr *nlh, int *errp);
+int dn_fib_semantic_match(int type, struct dn_fib_info *fi,
+ const struct flowidn *fld, struct dn_fib_res *res);
+void dn_fib_release_info(struct dn_fib_info *fi);
+void dn_fib_flush(void);
+void dn_fib_select_multipath(const struct flowidn *fld, struct dn_fib_res *res);
+
+/*
+ * dn_tables.c
+ */
+struct dn_fib_table *dn_fib_get_table(u32 n, int creat);
+struct dn_fib_table *dn_fib_empty_table(void);
+void dn_fib_table_init(void);
+void dn_fib_table_cleanup(void);
+
+/*
+ * dn_rules.c
+ */
+void dn_fib_rules_init(void);
+void dn_fib_rules_cleanup(void);
+unsigned int dnet_addr_type(__le16 addr);
+int dn_fib_lookup(struct flowidn *fld, struct dn_fib_res *res);
+
+int dn_fib_dump(struct sk_buff *skb, struct netlink_callback *cb);
+
+void dn_fib_free_info(struct dn_fib_info *fi);
+
+static inline void dn_fib_info_put(struct dn_fib_info *fi)
+{
+ if (atomic_dec_and_test(&fi->fib_clntref))
+ dn_fib_free_info(fi);
+}
+
+static inline void dn_fib_res_put(struct dn_fib_res *res)
+{
+ if (res->fi)
+ dn_fib_info_put(res->fi);
+ if (res->r)
+ fib_rule_put(res->r);
+}
+
+#else /* Endnode */
+
+#define dn_fib_init() do { } while(0)
+#define dn_fib_cleanup() do { } while(0)
+
+#define dn_fib_lookup(fl, res) (-ESRCH)
+#define dn_fib_info_put(fi) do { } while(0)
+#define dn_fib_select_multipath(fl, res) do { } while(0)
+#define dn_fib_rules_policy(saddr,res,flags) (0)
+#define dn_fib_res_put(res) do { } while(0)
+
+#endif /* CONFIG_DECNET_ROUTER */
+
+static inline __le16 dnet_make_mask(int n)
+{
+ if (n)
+ return cpu_to_le16(~((1 << (16 - n)) - 1));
+ return cpu_to_le16(0);
+}
+
+#endif /* _NET_DN_FIB_H */