diff options
Diffstat (limited to 'include/net/dn_fib.h')
| -rw-r--r-- | include/net/dn_fib.h | 204 |
1 files changed, 204 insertions, 0 deletions
diff --git a/include/net/dn_fib.h b/include/net/dn_fib.h new file mode 100644 index 00000000000..cd3c96d9601 --- /dev/null +++ b/include/net/dn_fib.h @@ -0,0 +1,204 @@ +#ifndef _NET_DN_FIB_H +#define _NET_DN_FIB_H + +/* WARNING: The ordering of these elements must match ordering + * of RTA_* rtnetlink attribute numbers. + */ +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; + u32 *rta_flow; + struct rta_cacheinfo *rta_ci; + struct rta_session *rta_sess; +}; + +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; + __u32 fib_metrics[RTAX_MAX]; +#define dn_fib_mtu fib_metrics[RTAX_MTU-1] +#define dn_fib_window fib_metrics[RTAX_WINDOW-1] +#define dn_fib_rtt fib_metrics[RTAX_RTT-1] +#define dn_fib_advmss fib_metrics[RTAX_ADVMSS-1] + int fib_nhs; + int fib_power; + struct dn_fib_nh fib_nh[0]; +#define dn_fib_dev fib_nh[0].nh_dev +}; + + +#define DN_FIB_RES_RESET(res) ((res).nh_sel = 0) +#define DN_FIB_RES_NH(res) ((res).fi->fib_nh[(res).nh_sel]) + +#define DN_FIB_RES_PREFSRC(res) ((res).fi->fib_prefsrc ? : __dn_fib_res_prefsrc(&res)) +#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 flowi *fl, + struct dn_fib_res *res); + int (*flush)(struct dn_fib_table *t); + int (*dump)(struct dn_fib_table *t, struct sk_buff *skb, struct netlink_callback *cb); + + unsigned char data[0]; +}; + +#ifdef CONFIG_DECNET_ROUTER +/* + * dn_fib.c + */ +extern void dn_fib_init(void); +extern void dn_fib_cleanup(void); + +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 flowi *fl, + 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 flowi *fl, + 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 __u16 dn_fib_rules_policy(__u16 saddr, struct dn_fib_res *res, unsigned *flags); +extern unsigned dnet_addr_type(__u16 addr); +extern int dn_fib_lookup(const struct flowi *fl, 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); + +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); +} + +extern struct dn_fib_table *dn_fib_tables[]; + +#else /* Endnode */ + +#define dn_fib_init() do { } while(0) +#define dn_fib_cleanup() do { } while(0) + +#define dn_fib_lookup(fl, res) (-ESRCH) +#define dn_fib_info_put(fi) do { } while(0) +#define dn_fib_select_multipath(fl, res) do { } while(0) +#define dn_fib_rules_policy(saddr,res,flags) (0) +#define dn_fib_res_put(res) do { } while(0) + +#endif /* CONFIG_DECNET_ROUTER */ + +static inline u16 dnet_make_mask(int n) +{ + if (n) + return htons(~((1<<(16-n))-1)); + return 0; +} + +#endif /* _NET_DN_FIB_H */ |