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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 | */ | |
7 | struct dn_kern_rta | |
8 | { | |
9 | void *rta_dst; | |
10 | void *rta_src; | |
11 | int *rta_iif; | |
12 | int *rta_oif; | |
13 | void *rta_gw; | |
14 | u32 *rta_priority; | |
15 | void *rta_prefsrc; | |
16 | struct rtattr *rta_mx; | |
17 | struct rtattr *rta_mp; | |
18 | unsigned char *rta_protoinfo; | |
19 | u32 *rta_flow; | |
20 | struct rta_cacheinfo *rta_ci; | |
21 | struct rta_session *rta_sess; | |
22 | }; | |
23 | ||
24 | struct dn_fib_res { | |
a8731cbf | 25 | struct fib_rule *r; |
1da177e4 LT |
26 | struct dn_fib_info *fi; |
27 | unsigned char prefixlen; | |
28 | unsigned char nh_sel; | |
29 | unsigned char type; | |
30 | unsigned char scope; | |
31 | }; | |
32 | ||
33 | struct dn_fib_nh { | |
34 | struct net_device *nh_dev; | |
35 | unsigned nh_flags; | |
36 | unsigned char nh_scope; | |
37 | int nh_weight; | |
38 | int nh_power; | |
39 | int nh_oif; | |
c4ea94ab | 40 | __le16 nh_gw; |
1da177e4 LT |
41 | }; |
42 | ||
43 | struct dn_fib_info { | |
44 | struct dn_fib_info *fib_next; | |
45 | struct dn_fib_info *fib_prev; | |
46 | int fib_treeref; | |
47 | atomic_t fib_clntref; | |
48 | int fib_dead; | |
49 | unsigned fib_flags; | |
50 | int fib_protocol; | |
c4ea94ab | 51 | __le16 fib_prefsrc; |
1da177e4 LT |
52 | __u32 fib_priority; |
53 | __u32 fib_metrics[RTAX_MAX]; | |
54 | #define dn_fib_mtu fib_metrics[RTAX_MTU-1] | |
55 | #define dn_fib_window fib_metrics[RTAX_WINDOW-1] | |
56 | #define dn_fib_rtt fib_metrics[RTAX_RTT-1] | |
57 | #define dn_fib_advmss fib_metrics[RTAX_ADVMSS-1] | |
58 | int fib_nhs; | |
59 | int fib_power; | |
60 | struct dn_fib_nh fib_nh[0]; | |
61 | #define dn_fib_dev fib_nh[0].nh_dev | |
62 | }; | |
63 | ||
64 | ||
65 | #define DN_FIB_RES_RESET(res) ((res).nh_sel = 0) | |
66 | #define DN_FIB_RES_NH(res) ((res).fi->fib_nh[(res).nh_sel]) | |
67 | ||
68 | #define DN_FIB_RES_PREFSRC(res) ((res).fi->fib_prefsrc ? : __dn_fib_res_prefsrc(&res)) | |
69 | #define DN_FIB_RES_GW(res) (DN_FIB_RES_NH(res).nh_gw) | |
70 | #define DN_FIB_RES_DEV(res) (DN_FIB_RES_NH(res).nh_dev) | |
71 | #define DN_FIB_RES_OIF(res) (DN_FIB_RES_NH(res).nh_oif) | |
72 | ||
73 | typedef struct { | |
c4ea94ab | 74 | __le16 datum; |
1da177e4 LT |
75 | } dn_fib_key_t; |
76 | ||
77 | typedef struct { | |
c4ea94ab | 78 | __le16 datum; |
1da177e4 LT |
79 | } dn_fib_hash_t; |
80 | ||
81 | typedef struct { | |
c4ea94ab | 82 | __u16 datum; |
1da177e4 LT |
83 | } dn_fib_idx_t; |
84 | ||
85 | struct dn_fib_node { | |
86 | struct dn_fib_node *fn_next; | |
87 | struct dn_fib_info *fn_info; | |
88 | #define DN_FIB_INFO(f) ((f)->fn_info) | |
89 | dn_fib_key_t fn_key; | |
90 | u8 fn_type; | |
91 | u8 fn_scope; | |
92 | u8 fn_state; | |
93 | }; | |
94 | ||
95 | ||
96 | struct dn_fib_table { | |
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); | |
c4ea94ab | 133 | extern int dn_fib_sync_down(__le16 local, struct net_device *dev, |
1da177e4 LT |
134 | int force); |
135 | extern int dn_fib_sync_up(struct net_device *dev); | |
136 | ||
137 | /* | |
138 | * dn_tables.c | |
139 | */ | |
2dfe55b4 | 140 | extern struct dn_fib_table *dn_fib_get_table(u32 n, int creat); |
1da177e4 LT |
141 | extern struct dn_fib_table *dn_fib_empty_table(void); |
142 | extern void dn_fib_table_init(void); | |
143 | extern void dn_fib_table_cleanup(void); | |
144 | ||
145 | /* | |
146 | * dn_rules.c | |
147 | */ | |
148 | extern void dn_fib_rules_init(void); | |
149 | extern void dn_fib_rules_cleanup(void); | |
c4ea94ab | 150 | extern unsigned dnet_addr_type(__le16 addr); |
a8731cbf | 151 | extern int dn_fib_lookup(struct flowi *fl, struct dn_fib_res *res); |
1da177e4 LT |
152 | |
153 | /* | |
154 | * rtnetlink interface | |
155 | */ | |
156 | extern int dn_fib_rtm_delroute(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg); | |
157 | extern int dn_fib_rtm_newroute(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg); | |
158 | extern int dn_fib_dump(struct sk_buff *skb, struct netlink_callback *cb); | |
159 | ||
160 | extern int dn_fib_rtm_delrule(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg); | |
161 | extern int dn_fib_rtm_newrule(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg); | |
162 | extern int dn_fib_dump_rules(struct sk_buff *skb, struct netlink_callback *cb); | |
163 | ||
164 | extern void dn_fib_free_info(struct dn_fib_info *fi); | |
165 | ||
166 | static inline void dn_fib_info_put(struct dn_fib_info *fi) | |
167 | { | |
168 | if (atomic_dec_and_test(&fi->fib_clntref)) | |
169 | dn_fib_free_info(fi); | |
170 | } | |
171 | ||
172 | static inline void dn_fib_res_put(struct dn_fib_res *res) | |
173 | { | |
174 | if (res->fi) | |
175 | dn_fib_info_put(res->fi); | |
176 | if (res->r) | |
a8731cbf | 177 | fib_rule_put(res->r); |
1da177e4 LT |
178 | } |
179 | ||
180 | extern struct dn_fib_table *dn_fib_tables[]; | |
181 | ||
182 | #else /* Endnode */ | |
183 | ||
184 | #define dn_fib_init() do { } while(0) | |
185 | #define dn_fib_cleanup() do { } while(0) | |
186 | ||
187 | #define dn_fib_lookup(fl, res) (-ESRCH) | |
188 | #define dn_fib_info_put(fi) do { } while(0) | |
189 | #define dn_fib_select_multipath(fl, res) do { } while(0) | |
190 | #define dn_fib_rules_policy(saddr,res,flags) (0) | |
191 | #define dn_fib_res_put(res) do { } while(0) | |
192 | ||
193 | #endif /* CONFIG_DECNET_ROUTER */ | |
194 | ||
c4ea94ab | 195 | static inline __le16 dnet_make_mask(int n) |
1da177e4 LT |
196 | { |
197 | if (n) | |
c4ea94ab | 198 | return dn_htons(~((1<<(16-n))-1)); |
1da177e4 LT |
199 | return 0; |
200 | } | |
201 | ||
202 | #endif /* _NET_DN_FIB_H */ |