]>
Commit | Line | Data |
---|---|---|
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 { | |
25 | struct dn_fib_rule *r; | |
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; | |
40 | u32 nh_gw; | |
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; | |
51 | dn_address fib_prefsrc; | |
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 { | |
74 | u16 datum; | |
75 | } dn_fib_key_t; | |
76 | ||
77 | typedef struct { | |
78 | u16 datum; | |
79 | } dn_fib_hash_t; | |
80 | ||
81 | typedef struct { | |
82 | u16 datum; | |
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 { | |
97 | int n; | |
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); | |
129 | extern u16 dn_fib_get_attr16(struct rtattr *attr, int attrlen, int type); | |
130 | extern void dn_fib_flush(void); | |
131 | extern void dn_fib_select_multipath(const struct flowi *fl, | |
132 | struct dn_fib_res *res); | |
133 | extern int dn_fib_sync_down(dn_address local, struct net_device *dev, | |
134 | int force); | |
135 | extern int dn_fib_sync_up(struct net_device *dev); | |
136 | ||
137 | /* | |
138 | * dn_tables.c | |
139 | */ | |
140 | extern struct dn_fib_table *dn_fib_get_table(int n, int creat); | |
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); | |
150 | extern void dn_fib_rule_put(struct dn_fib_rule *); | |
151 | extern __u16 dn_fib_rules_policy(__u16 saddr, struct dn_fib_res *res, unsigned *flags); | |
152 | extern unsigned dnet_addr_type(__u16 addr); | |
153 | extern int dn_fib_lookup(const struct flowi *fl, struct dn_fib_res *res); | |
154 | ||
155 | /* | |
156 | * rtnetlink interface | |
157 | */ | |
158 | extern int dn_fib_rtm_delroute(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg); | |
159 | extern int dn_fib_rtm_newroute(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg); | |
160 | extern int dn_fib_dump(struct sk_buff *skb, struct netlink_callback *cb); | |
161 | ||
162 | extern int dn_fib_rtm_delrule(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg); | |
163 | extern int dn_fib_rtm_newrule(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg); | |
164 | extern int dn_fib_dump_rules(struct sk_buff *skb, struct netlink_callback *cb); | |
165 | ||
166 | extern void dn_fib_free_info(struct dn_fib_info *fi); | |
167 | ||
168 | static inline void dn_fib_info_put(struct dn_fib_info *fi) | |
169 | { | |
170 | if (atomic_dec_and_test(&fi->fib_clntref)) | |
171 | dn_fib_free_info(fi); | |
172 | } | |
173 | ||
174 | static inline void dn_fib_res_put(struct dn_fib_res *res) | |
175 | { | |
176 | if (res->fi) | |
177 | dn_fib_info_put(res->fi); | |
178 | if (res->r) | |
179 | dn_fib_rule_put(res->r); | |
180 | } | |
181 | ||
182 | extern struct dn_fib_table *dn_fib_tables[]; | |
183 | ||
184 | #else /* Endnode */ | |
185 | ||
186 | #define dn_fib_init() do { } while(0) | |
187 | #define dn_fib_cleanup() do { } while(0) | |
188 | ||
189 | #define dn_fib_lookup(fl, res) (-ESRCH) | |
190 | #define dn_fib_info_put(fi) do { } while(0) | |
191 | #define dn_fib_select_multipath(fl, res) do { } while(0) | |
192 | #define dn_fib_rules_policy(saddr,res,flags) (0) | |
193 | #define dn_fib_res_put(res) do { } while(0) | |
194 | ||
195 | #endif /* CONFIG_DECNET_ROUTER */ | |
196 | ||
197 | static inline u16 dnet_make_mask(int n) | |
198 | { | |
199 | if (n) | |
200 | return htons(~((1<<(16-n))-1)); | |
201 | return 0; | |
202 | } | |
203 | ||
204 | #endif /* _NET_DN_FIB_H */ |