dn_fib.h
上传用户:lgb322
上传日期:2013-02-24
资源大小:30529k
文件大小:5k
- #ifndef _NET_DN_FIB_H
- #define _NET_DN_FIB_H
- #include <linux/config.h>
- #ifdef CONFIG_DECNET_ROUTER
- #include <linux/rtnetlink.h>
- struct dn_kern_rta
- {
- void *rta_dst;
- void *rta_src;
- int *rta_iif;
- int *rta_oif;
- void *rta_gw;
- u32 *rta_priority;
- void *rta_prefsrc;
- struct rtattr *rta_mx;
- struct rtattr *rta_mp;
- unsigned char *rta_protoinfo;
- unsigned char *rta_flow;
- struct rta_cacheinfo *rta_ci;
- };
- struct dn_fib_key {
- dn_address src;
- dn_address dst;
- int iif;
- int oif;
- u32 fwmark;
- unsigned char scope;
- };
- struct dn_fib_res {
- struct dn_fib_rule *r;
- struct dn_fib_info *fi;
- unsigned char prefixlen;
- unsigned char nh_sel;
- unsigned char type;
- unsigned char scope;
- };
- struct dn_fib_nh {
- struct net_device *nh_dev;
- unsigned nh_flags;
- unsigned char nh_scope;
- int nh_weight;
- int nh_power;
- int nh_oif;
- u32 nh_gw;
- };
- struct dn_fib_info {
- struct dn_fib_info *fib_next;
- struct dn_fib_info *fib_prev;
- int fib_treeref;
- atomic_t fib_clntref;
- int fib_dead;
- unsigned fib_flags;
- int fib_protocol;
- dn_address fib_prefsrc;
- u32 fib_priority;
- int fib_nhs;
- int fib_power;
- struct dn_fib_nh fib_nh[0];
- #define fib_dev fib_nh[0].nh_dev
- };
- #define DN_FIB_RES_NH(res) ((res).fi->fib_nh[(res).nh_sel])
- #define DN_FIB_RES_RESET(res) ((res).nh_sel = 0)
- #define DN_FIB_RES_GW(res) (DN_FIB_RES_NH(res).nh_gw)
- #define DN_FIB_RES_DEV(res) (DN_FIB_RES_NH(res).nh_dev)
- #define DN_FIB_RES_OIF(res) (DN_FIB_RES_NH(res).nh_oif)
- typedef struct {
- u16 datum;
- } dn_fib_key_t;
- typedef struct {
- u16 datum;
- } dn_fib_hash_t;
- typedef struct {
- u16 datum;
- } dn_fib_idx_t;
- struct dn_fib_node {
- struct dn_fib_node *fn_next;
- struct dn_fib_info *fn_info;
- #define DN_FIB_INFO(f) ((f)->fn_info)
- dn_fib_key_t fn_key;
- u8 fn_type;
- u8 fn_scope;
- u8 fn_state;
- };
- struct dn_fib_table {
- int n;
- int (*insert)(struct dn_fib_table *t, struct rtmsg *r,
- struct dn_kern_rta *rta, struct nlmsghdr *n,
- struct netlink_skb_parms *req);
- int (*delete)(struct dn_fib_table *t, struct rtmsg *r,
- struct dn_kern_rta *rta, struct nlmsghdr *n,
- struct netlink_skb_parms *req);
- int (*lookup)(struct dn_fib_table *t, const struct dn_fib_key *key,
- struct dn_fib_res *res);
- int (*flush)(struct dn_fib_table *t);
- #ifdef CONFIG_PROC_FS
- int (*get_info)(struct dn_fib_table *table, char *buf,
- int first, int count);
- #endif /* CONFIG_PROC_FS */
- int (*dump)(struct dn_fib_table *t, struct sk_buff *skb, struct netlink_callback *cb);
- unsigned char data[0];
- };
- /*
- * dn_fib.c
- */
- extern void dn_fib_init(void);
- extern void dn_fib_cleanup(void);
- extern int dn_fib_rt_message(struct sk_buff *skb);
- extern int dn_fib_ioctl(struct socket *sock, unsigned int cmd,
- unsigned long arg);
- extern struct dn_fib_info *dn_fib_create_info(const struct rtmsg *r,
- struct dn_kern_rta *rta,
- const struct nlmsghdr *nlh, int *errp);
- extern int dn_fib_semantic_match(int type, struct dn_fib_info *fi,
- const struct dn_fib_key *key, struct dn_fib_res *res);
- extern void dn_fib_release_info(struct dn_fib_info *fi);
- extern u16 dn_fib_get_attr16(struct rtattr *attr, int attrlen, int type);
- extern void dn_fib_flush(void);
- extern void dn_fib_select_multipath(const struct dn_fib_key *key,
- struct dn_fib_res *res);
- extern int dn_fib_sync_down(dn_address local, struct net_device *dev,
- int force);
- extern int dn_fib_sync_up(struct net_device *dev);
- /*
- * dn_tables.c
- */
- extern struct dn_fib_table *dn_fib_get_table(int n, int creat);
- extern struct dn_fib_table *dn_fib_empty_table(void);
- extern void dn_fib_table_init(void);
- extern void dn_fib_table_cleanup(void);
- /*
- * dn_rules.c
- */
- extern void dn_fib_rules_init(void);
- extern void dn_fib_rules_cleanup(void);
- extern void dn_fib_rule_put(struct dn_fib_rule *);
- extern int dn_fib_lookup(struct dn_fib_key *key, struct dn_fib_res *res);
- /*
- * rtnetlink interface
- */
- extern int dn_fib_rtm_delroute(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg);
- extern int dn_fib_rtm_newroute(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg);
- extern int dn_fib_dump(struct sk_buff *skb, struct netlink_callback *cb);
- extern int dn_fib_rtm_delrule(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg);
- extern int dn_fib_rtm_newrule(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg);
- extern int dn_fib_dump_rules(struct sk_buff *skb, struct netlink_callback *cb);
- #define DN_NUM_TABLES 255
- #define DN_MIN_TABLE 1
- #define DN_DEFAULT_TABLE 1
- #define DN_L1_TABLE 1
- #define DN_L2_TABLE 2
- extern void dn_fib_free_info(struct dn_fib_info *fi);
- static __inline__ void dn_fib_info_put(struct dn_fib_info *fi)
- {
- if (atomic_dec_and_test(&fi->fib_clntref))
- dn_fib_free_info(fi);
- }
- static __inline__ void dn_fib_res_put(struct dn_fib_res *res)
- {
- if (res->fi)
- dn_fib_info_put(res->fi);
- if (res->r)
- dn_fib_rule_put(res->r);
- }
- static __inline__ u16 dnet_make_mask(int n)
- {
- if (n)
- return htons(~((1<<(16-n))-1));
- return 0;
- }
- #endif /* CONFIG_DECNET_ROUTER */
- #endif /* _NET_DN_FIB_H */