199 lines
5.2 KiB
C
199 lines
5.2 KiB
C
#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 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;
|
|
__le16 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;
|
|
__le16 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 {
|
|
__le16 datum;
|
|
} dn_fib_key_t;
|
|
|
|
typedef struct {
|
|
__le16 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 {
|
|
struct hlist_node hlist;
|
|
u32 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 __le16 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);
|
|
|
|
/*
|
|
* dn_tables.c
|
|
*/
|
|
extern struct dn_fib_table *dn_fib_get_table(u32 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 unsigned dnet_addr_type(__le16 addr);
|
|
extern int dn_fib_lookup(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)
|
|
fib_rule_put(res->r);
|
|
}
|
|
|
|
#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 __le16 dnet_make_mask(int n)
|
|
{
|
|
if (n)
|
|
return dn_htons(~((1<<(16-n))-1));
|
|
return 0;
|
|
}
|
|
|
|
#endif /* _NET_DN_FIB_H */
|