1#ifndef _NET_DN_FIB_H 2#define _NET_DN_FIB_H 3 4#include <linux/config.h> 5 6#ifdef CONFIG_DECNET_ROUTER 7 8#include <linux/rtnetlink.h> 9 10struct dn_kern_rta 11{ 12 void *rta_dst; 13 void *rta_src; 14 int *rta_iif; 15 int *rta_oif; 16 void *rta_gw; 17 u32 *rta_priority; 18 void *rta_prefsrc; 19 struct rtattr *rta_mx; 20 struct rtattr *rta_mp; 21 unsigned char *rta_protoinfo; 22 unsigned char *rta_flow; 23 struct rta_cacheinfo *rta_ci; 24}; 25 26struct dn_fib_key { 27 dn_address src; 28 dn_address dst; 29 int iif; 30 int oif; 31 u32 fwmark; 32 unsigned char scope; 33}; 34 35struct dn_fib_res { 36 struct dn_fib_rule *r; 37 struct dn_fib_info *fi; 38 unsigned char prefixlen; 39 unsigned char nh_sel; 40 unsigned char type; 41 unsigned char scope; 42}; 43 44struct dn_fib_nh { 45 struct net_device *nh_dev; 46 unsigned nh_flags; 47 unsigned char nh_scope; 48 int nh_weight; 49 int nh_power; 50 int nh_oif; 51 u32 nh_gw; 52}; 53 54struct dn_fib_info { 55 struct dn_fib_info *fib_next; 56 struct dn_fib_info *fib_prev; 57 int fib_treeref; 58 atomic_t fib_clntref; 59 int fib_dead; 60 unsigned fib_flags; 61 int fib_protocol; 62 dn_address fib_prefsrc; 63 u32 fib_priority; 64 int fib_nhs; 65 int fib_power; 66 struct dn_fib_nh fib_nh[0]; 67#define fib_dev fib_nh[0].nh_dev 68}; 69 70 71#define DN_FIB_RES_NH(res) ((res).fi->fib_nh[(res).nh_sel]) 72#define DN_FIB_RES_RESET(res) ((res).nh_sel = 0) 73#define DN_FIB_RES_GW(res) (DN_FIB_RES_NH(res).nh_gw) 74#define DN_FIB_RES_DEV(res) (DN_FIB_RES_NH(res).nh_dev) 75#define DN_FIB_RES_OIF(res) (DN_FIB_RES_NH(res).nh_oif) 76 77typedef struct { 78 u16 datum; 79} dn_fib_key_t; 80 81typedef struct { 82 u16 datum; 83} dn_fib_hash_t; 84 85typedef struct { 86 u16 datum; 87} dn_fib_idx_t; 88 89struct dn_fib_node { 90 struct dn_fib_node *fn_next; 91 struct dn_fib_info *fn_info; 92#define DN_FIB_INFO(f) ((f)->fn_info) 93 dn_fib_key_t fn_key; 94 u8 fn_type; 95 u8 fn_scope; 96 u8 fn_state; 97}; 98 99 100struct dn_fib_table { 101 int n; 102 103 int (*insert)(struct dn_fib_table *t, struct rtmsg *r, 104 struct dn_kern_rta *rta, struct nlmsghdr *n, 105 struct netlink_skb_parms *req); 106 int (*delete)(struct dn_fib_table *t, struct rtmsg *r, 107 struct dn_kern_rta *rta, struct nlmsghdr *n, 108 struct netlink_skb_parms *req); 109 int (*lookup)(struct dn_fib_table *t, const struct dn_fib_key *key, 110 struct dn_fib_res *res); 111 int (*flush)(struct dn_fib_table *t); 112#ifdef CONFIG_PROC_FS 113 int (*get_info)(struct dn_fib_table *table, char *buf, 114 int first, int count); 115#endif /* CONFIG_PROC_FS */ 116 int (*dump)(struct dn_fib_table *t, struct sk_buff *skb, struct netlink_callback *cb); 117 118 unsigned char data[0]; 119}; 120 121 122/* 123 * dn_fib.c 124 */ 125extern void dn_fib_init(void); 126extern void dn_fib_cleanup(void); 127 128extern int dn_fib_rt_message(struct sk_buff *skb); 129extern int dn_fib_ioctl(struct socket *sock, unsigned int cmd, 130 unsigned long arg); 131extern struct dn_fib_info *dn_fib_create_info(const struct rtmsg *r, 132 struct dn_kern_rta *rta, 133 const struct nlmsghdr *nlh, int *errp); 134extern int dn_fib_semantic_match(int type, struct dn_fib_info *fi, 135 const struct dn_fib_key *key, struct dn_fib_res *res); 136extern void dn_fib_release_info(struct dn_fib_info *fi); 137extern u16 dn_fib_get_attr16(struct rtattr *attr, int attrlen, int type); 138extern void dn_fib_flush(void); 139extern void dn_fib_select_multipath(const struct dn_fib_key *key, 140 struct dn_fib_res *res); 141extern int dn_fib_sync_down(dn_address local, struct net_device *dev, 142 int force); 143extern int dn_fib_sync_up(struct net_device *dev); 144 145/* 146 * dn_tables.c 147 */ 148extern struct dn_fib_table *dn_fib_get_table(int n, int creat); 149extern struct dn_fib_table *dn_fib_empty_table(void); 150extern void dn_fib_table_init(void); 151extern void dn_fib_table_cleanup(void); 152 153/* 154 * dn_rules.c 155 */ 156extern void dn_fib_rules_init(void); 157extern void dn_fib_rules_cleanup(void); 158extern void dn_fib_rule_put(struct dn_fib_rule *); 159extern int dn_fib_lookup(struct dn_fib_key *key, struct dn_fib_res *res); 160 161/* 162 * rtnetlink interface 163 */ 164extern int dn_fib_rtm_delroute(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg); 165extern int dn_fib_rtm_newroute(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg); 166extern int dn_fib_dump(struct sk_buff *skb, struct netlink_callback *cb); 167 168extern int dn_fib_rtm_delrule(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg); 169extern int dn_fib_rtm_newrule(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg); 170extern int dn_fib_dump_rules(struct sk_buff *skb, struct netlink_callback *cb); 171 172#define DN_NUM_TABLES 255 173#define DN_MIN_TABLE 1 174#define DN_DEFAULT_TABLE 1 175#define DN_L1_TABLE 1 176#define DN_L2_TABLE 2 177 178extern void dn_fib_free_info(struct dn_fib_info *fi); 179 180static __inline__ void dn_fib_info_put(struct dn_fib_info *fi) 181{ 182 if (atomic_dec_and_test(&fi->fib_clntref)) 183 dn_fib_free_info(fi); 184} 185 186static __inline__ void dn_fib_res_put(struct dn_fib_res *res) 187{ 188 if (res->fi) 189 dn_fib_info_put(res->fi); 190 if (res->r) 191 dn_fib_rule_put(res->r); 192} 193 194static __inline__ u16 dnet_make_mask(int n) 195{ 196 if (n) 197 return htons(~((1<<(16-n))-1)); 198 return 0; 199} 200 201#endif /* CONFIG_DECNET_ROUTER */ 202 203#endif /* _NET_DN_FIB_H */ 204