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