11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifndef _NET_DN_FIB_H 21da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define _NET_DN_FIB_H 31da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* WARNING: The ordering of these elements must match ordering 51da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * of RTA_* rtnetlink attribute numbers. 61da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 7fd2c3ef761fbc5e6c27fa7d40b30cda06bfcd7d8Eric Dumazetstruct dn_kern_rta { 81da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void *rta_dst; 91da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void *rta_src; 101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int *rta_iif; 111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int *rta_oif; 121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void *rta_gw; 131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 *rta_priority; 141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void *rta_prefsrc; 151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct rtattr *rta_mx; 161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct rtattr *rta_mp; 171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char *rta_protoinfo; 181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 *rta_flow; 191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct rta_cacheinfo *rta_ci; 201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct rta_session *rta_sess; 211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct dn_fib_res { 24a8731cbf61c8768ea129780b70dc7dfc6795aad4Steven Whitehouse struct fib_rule *r; 251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dn_fib_info *fi; 261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char prefixlen; 271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char nh_sel; 281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char type; 291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char scope; 301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct dn_fib_nh { 331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct net_device *nh_dev; 341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned nh_flags; 351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char nh_scope; 361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int nh_weight; 371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int nh_power; 381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int nh_oif; 39c4ea94ab3710eb2434abe2eab1a479c2dc01f8acSteven Whitehouse __le16 nh_gw; 401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct dn_fib_info { 431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dn_fib_info *fib_next; 441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dn_fib_info *fib_prev; 451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int fib_treeref; 461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds atomic_t fib_clntref; 471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int fib_dead; 481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned fib_flags; 491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int fib_protocol; 50c4ea94ab3710eb2434abe2eab1a479c2dc01f8acSteven Whitehouse __le16 fib_prefsrc; 511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 fib_priority; 521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 fib_metrics[RTAX_MAX]; 531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int fib_nhs; 541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int fib_power; 551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dn_fib_nh fib_nh[0]; 561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define dn_fib_dev fib_nh[0].nh_dev 571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DN_FIB_RES_RESET(res) ((res).nh_sel = 0) 611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DN_FIB_RES_NH(res) ((res).fi->fib_nh[(res).nh_sel]) 621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DN_FIB_RES_PREFSRC(res) ((res).fi->fib_prefsrc ? : __dn_fib_res_prefsrc(&res)) 641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DN_FIB_RES_GW(res) (DN_FIB_RES_NH(res).nh_gw) 651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DN_FIB_RES_DEV(res) (DN_FIB_RES_NH(res).nh_dev) 661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DN_FIB_RES_OIF(res) (DN_FIB_RES_NH(res).nh_oif) 671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldstypedef struct { 69c4ea94ab3710eb2434abe2eab1a479c2dc01f8acSteven Whitehouse __le16 datum; 701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} dn_fib_key_t; 711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldstypedef struct { 73c4ea94ab3710eb2434abe2eab1a479c2dc01f8acSteven Whitehouse __le16 datum; 741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} dn_fib_hash_t; 751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldstypedef struct { 77c4ea94ab3710eb2434abe2eab1a479c2dc01f8acSteven Whitehouse __u16 datum; 781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} dn_fib_idx_t; 791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct dn_fib_node { 811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dn_fib_node *fn_next; 821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dn_fib_info *fn_info; 831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DN_FIB_INFO(f) ((f)->fn_info) 841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dn_fib_key_t fn_key; 851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u8 fn_type; 861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u8 fn_scope; 871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u8 fn_state; 881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct dn_fib_table { 92abcab268303c22d24fc89fedd35d82271d20f5daPatrick McHardy struct hlist_node hlist; 932dfe55b47e3d66ded5a84caf71e0da5710edf48bPatrick McHardy u32 n; 941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int (*insert)(struct dn_fib_table *t, struct rtmsg *r, 961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dn_kern_rta *rta, struct nlmsghdr *n, 971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct netlink_skb_parms *req); 981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int (*delete)(struct dn_fib_table *t, struct rtmsg *r, 991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dn_kern_rta *rta, struct nlmsghdr *n, 1001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct netlink_skb_parms *req); 101bef55aebd560c5a6f8883c421abccee39978c58cDavid S. Miller int (*lookup)(struct dn_fib_table *t, const struct flowidn *fld, 1021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dn_fib_res *res); 1031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int (*flush)(struct dn_fib_table *t); 1041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int (*dump)(struct dn_fib_table *t, struct sk_buff *skb, struct netlink_callback *cb); 1051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char data[0]; 1071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 1081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_DECNET_ROUTER 1101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 1111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * dn_fib.c 1121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void dn_fib_init(void); 1141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void dn_fib_cleanup(void); 1151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int dn_fib_ioctl(struct socket *sock, unsigned int cmd, 1171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long arg); 1181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern struct dn_fib_info *dn_fib_create_info(const struct rtmsg *r, 1191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dn_kern_rta *rta, 1201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds const struct nlmsghdr *nlh, int *errp); 1211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int dn_fib_semantic_match(int type, struct dn_fib_info *fi, 122bef55aebd560c5a6f8883c421abccee39978c58cDavid S. Miller const struct flowidn *fld, 1231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dn_fib_res *res); 1241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void dn_fib_release_info(struct dn_fib_info *fi); 125c4ea94ab3710eb2434abe2eab1a479c2dc01f8acSteven Whitehouseextern __le16 dn_fib_get_attr16(struct rtattr *attr, int attrlen, int type); 1261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void dn_fib_flush(void); 127bef55aebd560c5a6f8883c421abccee39978c58cDavid S. Millerextern void dn_fib_select_multipath(const struct flowidn *fld, 1281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dn_fib_res *res); 1291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 1311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * dn_tables.c 1321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1332dfe55b47e3d66ded5a84caf71e0da5710edf48bPatrick McHardyextern struct dn_fib_table *dn_fib_get_table(u32 n, int creat); 1341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern struct dn_fib_table *dn_fib_empty_table(void); 1351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void dn_fib_table_init(void); 1361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void dn_fib_table_cleanup(void); 1371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 1391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * dn_rules.c 1401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void dn_fib_rules_init(void); 1421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void dn_fib_rules_cleanup(void); 143c4ea94ab3710eb2434abe2eab1a479c2dc01f8acSteven Whitehouseextern unsigned dnet_addr_type(__le16 addr); 144bef55aebd560c5a6f8883c421abccee39978c58cDavid S. Millerextern int dn_fib_lookup(struct flowidn *fld, struct dn_fib_res *res); 1451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int dn_fib_dump(struct sk_buff *skb, struct netlink_callback *cb); 1471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void dn_fib_free_info(struct dn_fib_info *fi); 1491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline void dn_fib_info_put(struct dn_fib_info *fi) 1511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (atomic_dec_and_test(&fi->fib_clntref)) 1531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dn_fib_free_info(fi); 1541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline void dn_fib_res_put(struct dn_fib_res *res) 1571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (res->fi) 1591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dn_fib_info_put(res->fi); 1601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (res->r) 161a8731cbf61c8768ea129780b70dc7dfc6795aad4Steven Whitehouse fib_rule_put(res->r); 1621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#else /* Endnode */ 1651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define dn_fib_init() do { } while(0) 1671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define dn_fib_cleanup() do { } while(0) 1681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define dn_fib_lookup(fl, res) (-ESRCH) 1701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define dn_fib_info_put(fi) do { } while(0) 1711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define dn_fib_select_multipath(fl, res) do { } while(0) 1721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define dn_fib_rules_policy(saddr,res,flags) (0) 1731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define dn_fib_res_put(res) do { } while(0) 1741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif /* CONFIG_DECNET_ROUTER */ 1761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 177c4ea94ab3710eb2434abe2eab1a479c2dc01f8acSteven Whitehousestatic inline __le16 dnet_make_mask(int n) 1781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 179c4106aa88a440430d387e022f2ad6dc1e0d52e98Harvey Harrison if (n) 180c4106aa88a440430d387e022f2ad6dc1e0d52e98Harvey Harrison return cpu_to_le16(~((1 << (16 - n)) - 1)); 181c4106aa88a440430d387e022f2ad6dc1e0d52e98Harvey Harrison return cpu_to_le16(0); 1821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif /* _NET_DN_FIB_H */ 185