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1da177e4 LT |
1 | #ifndef _NET_DN_FIB_H |
2 | #define _NET_DN_FIB_H | |
3 | ||
4 | /* WARNING: The ordering of these elements must match ordering | |
5 | * of RTA_* rtnetlink attribute numbers. | |
6 | */ | |
fd2c3ef7 | 7 | struct dn_kern_rta { |
1da177e4 LT |
8 | void *rta_dst; |
9 | void *rta_src; | |
10 | int *rta_iif; | |
11 | int *rta_oif; | |
12 | void *rta_gw; | |
13 | u32 *rta_priority; | |
14 | void *rta_prefsrc; | |
15 | struct rtattr *rta_mx; | |
16 | struct rtattr *rta_mp; | |
17 | unsigned char *rta_protoinfo; | |
18 | u32 *rta_flow; | |
19 | struct rta_cacheinfo *rta_ci; | |
20 | struct rta_session *rta_sess; | |
21 | }; | |
22 | ||
23 | struct dn_fib_res { | |
a8731cbf | 24 | struct fib_rule *r; |
1da177e4 LT |
25 | struct dn_fib_info *fi; |
26 | unsigned char prefixlen; | |
27 | unsigned char nh_sel; | |
28 | unsigned char type; | |
29 | unsigned char scope; | |
30 | }; | |
31 | ||
32 | struct dn_fib_nh { | |
33 | struct net_device *nh_dev; | |
34 | unsigned nh_flags; | |
35 | unsigned char nh_scope; | |
36 | int nh_weight; | |
37 | int nh_power; | |
38 | int nh_oif; | |
c4ea94ab | 39 | __le16 nh_gw; |
1da177e4 LT |
40 | }; |
41 | ||
42 | struct dn_fib_info { | |
43 | struct dn_fib_info *fib_next; | |
44 | struct dn_fib_info *fib_prev; | |
45 | int fib_treeref; | |
46 | atomic_t fib_clntref; | |
47 | int fib_dead; | |
48 | unsigned fib_flags; | |
49 | int fib_protocol; | |
c4ea94ab | 50 | __le16 fib_prefsrc; |
1da177e4 LT |
51 | __u32 fib_priority; |
52 | __u32 fib_metrics[RTAX_MAX]; | |
53 | #define dn_fib_mtu fib_metrics[RTAX_MTU-1] | |
54 | #define dn_fib_window fib_metrics[RTAX_WINDOW-1] | |
55 | #define dn_fib_rtt fib_metrics[RTAX_RTT-1] | |
56 | #define dn_fib_advmss fib_metrics[RTAX_ADVMSS-1] | |
57 | int fib_nhs; | |
58 | int fib_power; | |
59 | struct dn_fib_nh fib_nh[0]; | |
60 | #define dn_fib_dev fib_nh[0].nh_dev | |
61 | }; | |
62 | ||
63 | ||
64 | #define DN_FIB_RES_RESET(res) ((res).nh_sel = 0) | |
65 | #define DN_FIB_RES_NH(res) ((res).fi->fib_nh[(res).nh_sel]) | |
66 | ||
67 | #define DN_FIB_RES_PREFSRC(res) ((res).fi->fib_prefsrc ? : __dn_fib_res_prefsrc(&res)) | |
68 | #define DN_FIB_RES_GW(res) (DN_FIB_RES_NH(res).nh_gw) | |
69 | #define DN_FIB_RES_DEV(res) (DN_FIB_RES_NH(res).nh_dev) | |
70 | #define DN_FIB_RES_OIF(res) (DN_FIB_RES_NH(res).nh_oif) | |
71 | ||
72 | typedef struct { | |
c4ea94ab | 73 | __le16 datum; |
1da177e4 LT |
74 | } dn_fib_key_t; |
75 | ||
76 | typedef struct { | |
c4ea94ab | 77 | __le16 datum; |
1da177e4 LT |
78 | } dn_fib_hash_t; |
79 | ||
80 | typedef struct { | |
c4ea94ab | 81 | __u16 datum; |
1da177e4 LT |
82 | } dn_fib_idx_t; |
83 | ||
84 | struct dn_fib_node { | |
85 | struct dn_fib_node *fn_next; | |
86 | struct dn_fib_info *fn_info; | |
87 | #define DN_FIB_INFO(f) ((f)->fn_info) | |
88 | dn_fib_key_t fn_key; | |
89 | u8 fn_type; | |
90 | u8 fn_scope; | |
91 | u8 fn_state; | |
92 | }; | |
93 | ||
94 | ||
95 | struct dn_fib_table { | |
abcab268 | 96 | struct hlist_node hlist; |
2dfe55b4 | 97 | u32 n; |
1da177e4 LT |
98 | |
99 | int (*insert)(struct dn_fib_table *t, struct rtmsg *r, | |
100 | struct dn_kern_rta *rta, struct nlmsghdr *n, | |
101 | struct netlink_skb_parms *req); | |
102 | int (*delete)(struct dn_fib_table *t, struct rtmsg *r, | |
103 | struct dn_kern_rta *rta, struct nlmsghdr *n, | |
104 | struct netlink_skb_parms *req); | |
105 | int (*lookup)(struct dn_fib_table *t, const struct flowi *fl, | |
106 | struct dn_fib_res *res); | |
107 | int (*flush)(struct dn_fib_table *t); | |
108 | int (*dump)(struct dn_fib_table *t, struct sk_buff *skb, struct netlink_callback *cb); | |
109 | ||
110 | unsigned char data[0]; | |
111 | }; | |
112 | ||
113 | #ifdef CONFIG_DECNET_ROUTER | |
114 | /* | |
115 | * dn_fib.c | |
116 | */ | |
117 | extern void dn_fib_init(void); | |
118 | extern void dn_fib_cleanup(void); | |
119 | ||
120 | extern int dn_fib_ioctl(struct socket *sock, unsigned int cmd, | |
121 | unsigned long arg); | |
122 | extern struct dn_fib_info *dn_fib_create_info(const struct rtmsg *r, | |
123 | struct dn_kern_rta *rta, | |
124 | const struct nlmsghdr *nlh, int *errp); | |
125 | extern int dn_fib_semantic_match(int type, struct dn_fib_info *fi, | |
126 | const struct flowi *fl, | |
127 | struct dn_fib_res *res); | |
128 | extern void dn_fib_release_info(struct dn_fib_info *fi); | |
c4ea94ab | 129 | extern __le16 dn_fib_get_attr16(struct rtattr *attr, int attrlen, int type); |
1da177e4 LT |
130 | extern void dn_fib_flush(void); |
131 | extern void dn_fib_select_multipath(const struct flowi *fl, | |
132 | struct dn_fib_res *res); | |
1da177e4 LT |
133 | |
134 | /* | |
135 | * dn_tables.c | |
136 | */ | |
2dfe55b4 | 137 | extern struct dn_fib_table *dn_fib_get_table(u32 n, int creat); |
1da177e4 LT |
138 | extern struct dn_fib_table *dn_fib_empty_table(void); |
139 | extern void dn_fib_table_init(void); | |
140 | extern void dn_fib_table_cleanup(void); | |
141 | ||
142 | /* | |
143 | * dn_rules.c | |
144 | */ | |
145 | extern void dn_fib_rules_init(void); | |
146 | extern void dn_fib_rules_cleanup(void); | |
c4ea94ab | 147 | extern unsigned dnet_addr_type(__le16 addr); |
a8731cbf | 148 | extern int dn_fib_lookup(struct flowi *fl, struct dn_fib_res *res); |
1da177e4 | 149 | |
1da177e4 LT |
150 | extern int dn_fib_dump(struct sk_buff *skb, struct netlink_callback *cb); |
151 | ||
1da177e4 LT |
152 | extern void dn_fib_free_info(struct dn_fib_info *fi); |
153 | ||
154 | static inline void dn_fib_info_put(struct dn_fib_info *fi) | |
155 | { | |
156 | if (atomic_dec_and_test(&fi->fib_clntref)) | |
157 | dn_fib_free_info(fi); | |
158 | } | |
159 | ||
160 | static inline void dn_fib_res_put(struct dn_fib_res *res) | |
161 | { | |
162 | if (res->fi) | |
163 | dn_fib_info_put(res->fi); | |
164 | if (res->r) | |
a8731cbf | 165 | fib_rule_put(res->r); |
1da177e4 LT |
166 | } |
167 | ||
1da177e4 LT |
168 | #else /* Endnode */ |
169 | ||
170 | #define dn_fib_init() do { } while(0) | |
171 | #define dn_fib_cleanup() do { } while(0) | |
172 | ||
173 | #define dn_fib_lookup(fl, res) (-ESRCH) | |
174 | #define dn_fib_info_put(fi) do { } while(0) | |
175 | #define dn_fib_select_multipath(fl, res) do { } while(0) | |
176 | #define dn_fib_rules_policy(saddr,res,flags) (0) | |
177 | #define dn_fib_res_put(res) do { } while(0) | |
178 | ||
179 | #endif /* CONFIG_DECNET_ROUTER */ | |
180 | ||
c4ea94ab | 181 | static inline __le16 dnet_make_mask(int n) |
1da177e4 | 182 | { |
c4106aa8 HH |
183 | if (n) |
184 | return cpu_to_le16(~((1 << (16 - n)) - 1)); | |
185 | return cpu_to_le16(0); | |
1da177e4 LT |
186 | } |
187 | ||
188 | #endif /* _NET_DN_FIB_H */ |