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 */ 7struct dn_kern_rta { 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 23struct dn_fib_res { 24 struct fib_rule *r; 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 32struct 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; 39 __le16 nh_gw; 40}; 41 42struct 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; 50 __le16 fib_prefsrc; 51 __u32 fib_priority; 52 __u32 fib_metrics[RTAX_MAX]; 53 int fib_nhs; 54 int fib_power; 55 struct dn_fib_nh fib_nh[0]; 56#define dn_fib_dev fib_nh[0].nh_dev 57}; 58 59 60#define DN_FIB_RES_RESET(res) ((res).nh_sel = 0) 61#define DN_FIB_RES_NH(res) ((res).fi->fib_nh[(res).nh_sel]) 62 63#define DN_FIB_RES_PREFSRC(res) ((res).fi->fib_prefsrc ? : __dn_fib_res_prefsrc(&res)) 64#define DN_FIB_RES_GW(res) (DN_FIB_RES_NH(res).nh_gw) 65#define DN_FIB_RES_DEV(res) (DN_FIB_RES_NH(res).nh_dev) 66#define DN_FIB_RES_OIF(res) (DN_FIB_RES_NH(res).nh_oif) 67 68typedef struct { 69 __le16 datum; 70} dn_fib_key_t; 71 72typedef struct { 73 __le16 datum; 74} dn_fib_hash_t; 75 76typedef struct { 77 __u16 datum; 78} dn_fib_idx_t; 79 80struct dn_fib_node { 81 struct dn_fib_node *fn_next; 82 struct dn_fib_info *fn_info; 83#define DN_FIB_INFO(f) ((f)->fn_info) 84 dn_fib_key_t fn_key; 85 u8 fn_type; 86 u8 fn_scope; 87 u8 fn_state; 88}; 89 90 91struct dn_fib_table { 92 struct hlist_node hlist; 93 u32 n; 94 95 int (*insert)(struct dn_fib_table *t, struct rtmsg *r, 96 struct dn_kern_rta *rta, struct nlmsghdr *n, 97 struct netlink_skb_parms *req); 98 int (*delete)(struct dn_fib_table *t, struct rtmsg *r, 99 struct dn_kern_rta *rta, struct nlmsghdr *n, 100 struct netlink_skb_parms *req); 101 int (*lookup)(struct dn_fib_table *t, const struct flowidn *fld, 102 struct dn_fib_res *res); 103 int (*flush)(struct dn_fib_table *t); 104 int (*dump)(struct dn_fib_table *t, struct sk_buff *skb, struct netlink_callback *cb); 105 106 unsigned char data[0]; 107}; 108 109#ifdef CONFIG_DECNET_ROUTER 110/* 111 * dn_fib.c 112 */ 113extern void dn_fib_init(void); 114extern void dn_fib_cleanup(void); 115 116extern int dn_fib_ioctl(struct socket *sock, unsigned int cmd, 117 unsigned long arg); 118extern struct dn_fib_info *dn_fib_create_info(const struct rtmsg *r, 119 struct dn_kern_rta *rta, 120 const struct nlmsghdr *nlh, int *errp); 121extern int dn_fib_semantic_match(int type, struct dn_fib_info *fi, 122 const struct flowidn *fld, 123 struct dn_fib_res *res); 124extern void dn_fib_release_info(struct dn_fib_info *fi); 125extern __le16 dn_fib_get_attr16(struct rtattr *attr, int attrlen, int type); 126extern void dn_fib_flush(void); 127extern void dn_fib_select_multipath(const struct flowidn *fld, 128 struct dn_fib_res *res); 129 130/* 131 * dn_tables.c 132 */ 133extern struct dn_fib_table *dn_fib_get_table(u32 n, int creat); 134extern struct dn_fib_table *dn_fib_empty_table(void); 135extern void dn_fib_table_init(void); 136extern void dn_fib_table_cleanup(void); 137 138/* 139 * dn_rules.c 140 */ 141extern void dn_fib_rules_init(void); 142extern void dn_fib_rules_cleanup(void); 143extern unsigned dnet_addr_type(__le16 addr); 144extern int dn_fib_lookup(struct flowidn *fld, struct dn_fib_res *res); 145 146extern int dn_fib_dump(struct sk_buff *skb, struct netlink_callback *cb); 147 148extern void dn_fib_free_info(struct dn_fib_info *fi); 149 150static inline void dn_fib_info_put(struct dn_fib_info *fi) 151{ 152 if (atomic_dec_and_test(&fi->fib_clntref)) 153 dn_fib_free_info(fi); 154} 155 156static inline void dn_fib_res_put(struct dn_fib_res *res) 157{ 158 if (res->fi) 159 dn_fib_info_put(res->fi); 160 if (res->r) 161 fib_rule_put(res->r); 162} 163 164#else /* Endnode */ 165 166#define dn_fib_init() do { } while(0) 167#define dn_fib_cleanup() do { } while(0) 168 169#define dn_fib_lookup(fl, res) (-ESRCH) 170#define dn_fib_info_put(fi) do { } while(0) 171#define dn_fib_select_multipath(fl, res) do { } while(0) 172#define dn_fib_rules_policy(saddr,res,flags) (0) 173#define dn_fib_res_put(res) do { } while(0) 174 175#endif /* CONFIG_DECNET_ROUTER */ 176 177static inline __le16 dnet_make_mask(int n) 178{ 179 if (n) 180 return cpu_to_le16(~((1 << (16 - n)) - 1)); 181 return cpu_to_le16(0); 182} 183 184#endif /* _NET_DN_FIB_H */ 185