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