tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#ifndef _NET_DN_FIB_H
2#define _NET_DN_FIB_H
3
4#include <linux/netlink.h>
5
6extern const struct nla_policy rtm_dn_policy[];
7
8struct dn_fib_res {
9 struct fib_rule *r;
10 struct dn_fib_info *fi;
11 unsigned char prefixlen;
12 unsigned char nh_sel;
13 unsigned char type;
14 unsigned char scope;
15};
16
17struct dn_fib_nh {
18 struct net_device *nh_dev;
19 unsigned int nh_flags;
20 unsigned char nh_scope;
21 int nh_weight;
22 int nh_power;
23 int nh_oif;
24 __le16 nh_gw;
25};
26
27struct dn_fib_info {
28 struct dn_fib_info *fib_next;
29 struct dn_fib_info *fib_prev;
30 int fib_treeref;
31 atomic_t fib_clntref;
32 int fib_dead;
33 unsigned int fib_flags;
34 int fib_protocol;
35 __le16 fib_prefsrc;
36 __u32 fib_priority;
37 __u32 fib_metrics[RTAX_MAX];
38 int fib_nhs;
39 int fib_power;
40 struct dn_fib_nh fib_nh[0];
41#define dn_fib_dev fib_nh[0].nh_dev
42};
43
44
45#define DN_FIB_RES_RESET(res) ((res).nh_sel = 0)
46#define DN_FIB_RES_NH(res) ((res).fi->fib_nh[(res).nh_sel])
47
48#define DN_FIB_RES_PREFSRC(res) ((res).fi->fib_prefsrc ? : __dn_fib_res_prefsrc(&res))
49#define DN_FIB_RES_GW(res) (DN_FIB_RES_NH(res).nh_gw)
50#define DN_FIB_RES_DEV(res) (DN_FIB_RES_NH(res).nh_dev)
51#define DN_FIB_RES_OIF(res) (DN_FIB_RES_NH(res).nh_oif)
52
53typedef struct {
54 __le16 datum;
55} dn_fib_key_t;
56
57typedef struct {
58 __le16 datum;
59} dn_fib_hash_t;
60
61typedef struct {
62 __u16 datum;
63} dn_fib_idx_t;
64
65struct dn_fib_node {
66 struct dn_fib_node *fn_next;
67 struct dn_fib_info *fn_info;
68#define DN_FIB_INFO(f) ((f)->fn_info)
69 dn_fib_key_t fn_key;
70 u8 fn_type;
71 u8 fn_scope;
72 u8 fn_state;
73};
74
75
76struct dn_fib_table {
77 struct hlist_node hlist;
78 u32 n;
79
80 int (*insert)(struct dn_fib_table *t, struct rtmsg *r,
81 struct nlattr *attrs[], struct nlmsghdr *n,
82 struct netlink_skb_parms *req);
83 int (*delete)(struct dn_fib_table *t, struct rtmsg *r,
84 struct nlattr *attrs[], struct nlmsghdr *n,
85 struct netlink_skb_parms *req);
86 int (*lookup)(struct dn_fib_table *t, const struct flowidn *fld,
87 struct dn_fib_res *res);
88 int (*flush)(struct dn_fib_table *t);
89 int (*dump)(struct dn_fib_table *t, struct sk_buff *skb, struct netlink_callback *cb);
90
91 unsigned char data[0];
92};
93
94#ifdef CONFIG_DECNET_ROUTER
95/*
96 * dn_fib.c
97 */
98extern void dn_fib_init(void);
99extern void dn_fib_cleanup(void);
100
101extern int dn_fib_ioctl(struct socket *sock, unsigned int cmd,
102 unsigned long arg);
103extern struct dn_fib_info *dn_fib_create_info(const struct rtmsg *r,
104 struct nlattr *attrs[],
105 const struct nlmsghdr *nlh, int *errp);
106extern int dn_fib_semantic_match(int type, struct dn_fib_info *fi,
107 const struct flowidn *fld,
108 struct dn_fib_res *res);
109extern void dn_fib_release_info(struct dn_fib_info *fi);
110extern void dn_fib_flush(void);
111extern void dn_fib_select_multipath(const struct flowidn *fld,
112 struct dn_fib_res *res);
113
114/*
115 * dn_tables.c
116 */
117extern struct dn_fib_table *dn_fib_get_table(u32 n, int creat);
118extern struct dn_fib_table *dn_fib_empty_table(void);
119extern void dn_fib_table_init(void);
120extern void dn_fib_table_cleanup(void);
121
122/*
123 * dn_rules.c
124 */
125extern void dn_fib_rules_init(void);
126extern void dn_fib_rules_cleanup(void);
127extern unsigned int dnet_addr_type(__le16 addr);
128extern int dn_fib_lookup(struct flowidn *fld, struct dn_fib_res *res);
129
130extern int dn_fib_dump(struct sk_buff *skb, struct netlink_callback *cb);
131
132extern void dn_fib_free_info(struct dn_fib_info *fi);
133
134static inline void dn_fib_info_put(struct dn_fib_info *fi)
135{
136 if (atomic_dec_and_test(&fi->fib_clntref))
137 dn_fib_free_info(fi);
138}
139
140static inline void dn_fib_res_put(struct dn_fib_res *res)
141{
142 if (res->fi)
143 dn_fib_info_put(res->fi);
144 if (res->r)
145 fib_rule_put(res->r);
146}
147
148#else /* Endnode */
149
150#define dn_fib_init() do { } while(0)
151#define dn_fib_cleanup() do { } while(0)
152
153#define dn_fib_lookup(fl, res) (-ESRCH)
154#define dn_fib_info_put(fi) do { } while(0)
155#define dn_fib_select_multipath(fl, res) do { } while(0)
156#define dn_fib_rules_policy(saddr,res,flags) (0)
157#define dn_fib_res_put(res) do { } while(0)
158
159#endif /* CONFIG_DECNET_ROUTER */
160
161static inline __le16 dnet_make_mask(int n)
162{
163 if (n)
164 return cpu_to_le16(~((1 << (16 - n)) - 1));
165 return cpu_to_le16(0);
166}
167
168#endif /* _NET_DN_FIB_H */