Commit | Line | Data |
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1da177e4 LT |
1 | #ifndef _NET_DN_FIB_H |
2 | #define _NET_DN_FIB_H | |
3 | ||
58d7d8f9 TG |
4 | #include <linux/netlink.h> |
5 | ||
6 | extern const struct nla_policy rtm_dn_policy[]; | |
1da177e4 LT |
7 | |
8 | struct dn_fib_res { | |
a8731cbf | 9 | struct fib_rule *r; |
1da177e4 LT |
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 | ||
17 | struct dn_fib_nh { | |
18 | struct net_device *nh_dev; | |
95c96174 | 19 | unsigned int nh_flags; |
1da177e4 LT |
20 | unsigned char nh_scope; |
21 | int nh_weight; | |
22 | int nh_power; | |
23 | int nh_oif; | |
c4ea94ab | 24 | __le16 nh_gw; |
1da177e4 LT |
25 | }; |
26 | ||
27 | struct 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; | |
95c96174 | 33 | unsigned int fib_flags; |
1da177e4 | 34 | int fib_protocol; |
c4ea94ab | 35 | __le16 fib_prefsrc; |
1da177e4 LT |
36 | __u32 fib_priority; |
37 | __u32 fib_metrics[RTAX_MAX]; | |
1da177e4 LT |
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 | ||
53 | typedef struct { | |
c4ea94ab | 54 | __le16 datum; |
1da177e4 LT |
55 | } dn_fib_key_t; |
56 | ||
57 | typedef struct { | |
c4ea94ab | 58 | __le16 datum; |
1da177e4 LT |
59 | } dn_fib_hash_t; |
60 | ||
61 | typedef struct { | |
c4ea94ab | 62 | __u16 datum; |
1da177e4 LT |
63 | } dn_fib_idx_t; |
64 | ||
65 | struct 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 | ||
76 | struct dn_fib_table { | |
abcab268 | 77 | struct hlist_node hlist; |
2dfe55b4 | 78 | u32 n; |
1da177e4 LT |
79 | |
80 | int (*insert)(struct dn_fib_table *t, struct rtmsg *r, | |
58d7d8f9 | 81 | struct nlattr *attrs[], struct nlmsghdr *n, |
1da177e4 LT |
82 | struct netlink_skb_parms *req); |
83 | int (*delete)(struct dn_fib_table *t, struct rtmsg *r, | |
58d7d8f9 | 84 | struct nlattr *attrs[], struct nlmsghdr *n, |
1da177e4 | 85 | struct netlink_skb_parms *req); |
bef55aeb | 86 | int (*lookup)(struct dn_fib_table *t, const struct flowidn *fld, |
1da177e4 LT |
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 | */ | |
59ddd965 JP |
98 | void dn_fib_init(void); |
99 | void dn_fib_cleanup(void); | |
100 | ||
101 | int dn_fib_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg); | |
102 | struct dn_fib_info *dn_fib_create_info(const struct rtmsg *r, | |
103 | struct nlattr *attrs[], | |
104 | const struct nlmsghdr *nlh, int *errp); | |
105 | int dn_fib_semantic_match(int type, struct dn_fib_info *fi, | |
106 | const struct flowidn *fld, struct dn_fib_res *res); | |
107 | void dn_fib_release_info(struct dn_fib_info *fi); | |
108 | void dn_fib_flush(void); | |
109 | void dn_fib_select_multipath(const struct flowidn *fld, struct dn_fib_res *res); | |
1da177e4 LT |
110 | |
111 | /* | |
112 | * dn_tables.c | |
113 | */ | |
59ddd965 JP |
114 | struct dn_fib_table *dn_fib_get_table(u32 n, int creat); |
115 | struct dn_fib_table *dn_fib_empty_table(void); | |
116 | void dn_fib_table_init(void); | |
117 | void dn_fib_table_cleanup(void); | |
1da177e4 LT |
118 | |
119 | /* | |
120 | * dn_rules.c | |
121 | */ | |
59ddd965 JP |
122 | void dn_fib_rules_init(void); |
123 | void dn_fib_rules_cleanup(void); | |
124 | unsigned int dnet_addr_type(__le16 addr); | |
125 | int dn_fib_lookup(struct flowidn *fld, struct dn_fib_res *res); | |
1da177e4 | 126 | |
59ddd965 | 127 | int dn_fib_dump(struct sk_buff *skb, struct netlink_callback *cb); |
1da177e4 | 128 | |
59ddd965 | 129 | void dn_fib_free_info(struct dn_fib_info *fi); |
1da177e4 LT |
130 | |
131 | static inline void dn_fib_info_put(struct dn_fib_info *fi) | |
132 | { | |
133 | if (atomic_dec_and_test(&fi->fib_clntref)) | |
134 | dn_fib_free_info(fi); | |
135 | } | |
136 | ||
137 | static inline void dn_fib_res_put(struct dn_fib_res *res) | |
138 | { | |
139 | if (res->fi) | |
140 | dn_fib_info_put(res->fi); | |
141 | if (res->r) | |
a8731cbf | 142 | fib_rule_put(res->r); |
1da177e4 LT |
143 | } |
144 | ||
1da177e4 LT |
145 | #else /* Endnode */ |
146 | ||
147 | #define dn_fib_init() do { } while(0) | |
148 | #define dn_fib_cleanup() do { } while(0) | |
149 | ||
150 | #define dn_fib_lookup(fl, res) (-ESRCH) | |
151 | #define dn_fib_info_put(fi) do { } while(0) | |
152 | #define dn_fib_select_multipath(fl, res) do { } while(0) | |
153 | #define dn_fib_rules_policy(saddr,res,flags) (0) | |
154 | #define dn_fib_res_put(res) do { } while(0) | |
155 | ||
156 | #endif /* CONFIG_DECNET_ROUTER */ | |
157 | ||
c4ea94ab | 158 | static inline __le16 dnet_make_mask(int n) |
1da177e4 | 159 | { |
c4106aa8 HH |
160 | if (n) |
161 | return cpu_to_le16(~((1 << (16 - n)) - 1)); | |
162 | return cpu_to_le16(0); | |
1da177e4 LT |
163 | } |
164 | ||
165 | #endif /* _NET_DN_FIB_H */ |