cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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dn_fib.h (4081B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef _NET_DN_FIB_H
      3#define _NET_DN_FIB_H
      4
      5#include <linux/netlink.h>
      6#include <linux/refcount.h>
      7
      8extern const struct nla_policy rtm_dn_policy[];
      9
     10struct dn_fib_res {
     11	struct fib_rule *r;
     12	struct dn_fib_info *fi;
     13	unsigned char prefixlen;
     14	unsigned char nh_sel;
     15	unsigned char type;
     16	unsigned char scope;
     17};
     18
     19struct dn_fib_nh {
     20	struct net_device	*nh_dev;
     21	unsigned int		nh_flags;
     22	unsigned char		nh_scope;
     23	int			nh_weight;
     24	int			nh_power;
     25	int			nh_oif;
     26	__le16			nh_gw;
     27};
     28
     29struct dn_fib_info {
     30	struct dn_fib_info	*fib_next;
     31	struct dn_fib_info	*fib_prev;
     32	refcount_t		fib_treeref;
     33	refcount_t		fib_clntref;
     34	int			fib_dead;
     35	unsigned int		fib_flags;
     36	int			fib_protocol;
     37	__le16			fib_prefsrc;
     38	__u32			fib_priority;
     39	__u32			fib_metrics[RTAX_MAX];
     40	int			fib_nhs;
     41	int			fib_power;
     42	struct dn_fib_nh	fib_nh[0];
     43#define dn_fib_dev		fib_nh[0].nh_dev
     44};
     45
     46
     47#define DN_FIB_RES_RESET(res)	((res).nh_sel = 0)
     48#define DN_FIB_RES_NH(res)	((res).fi->fib_nh[(res).nh_sel])
     49
     50#define DN_FIB_RES_PREFSRC(res)	((res).fi->fib_prefsrc ? : __dn_fib_res_prefsrc(&res))
     51#define DN_FIB_RES_GW(res)	(DN_FIB_RES_NH(res).nh_gw)
     52#define DN_FIB_RES_DEV(res)	(DN_FIB_RES_NH(res).nh_dev)
     53#define DN_FIB_RES_OIF(res)	(DN_FIB_RES_NH(res).nh_oif)
     54
     55typedef struct {
     56	__le16	datum;
     57} dn_fib_key_t;
     58
     59typedef struct {
     60	__le16	datum;
     61} dn_fib_hash_t;
     62
     63typedef struct {
     64	__u16	datum;
     65} dn_fib_idx_t;
     66
     67struct dn_fib_node {
     68	struct dn_fib_node *fn_next;
     69	struct dn_fib_info *fn_info;
     70#define DN_FIB_INFO(f) ((f)->fn_info)
     71	dn_fib_key_t	fn_key;
     72	u8		fn_type;
     73	u8		fn_scope;
     74	u8		fn_state;
     75};
     76
     77
     78struct dn_fib_table {
     79	struct hlist_node hlist;
     80	u32 n;
     81
     82	int (*insert)(struct dn_fib_table *t, struct rtmsg *r, 
     83			struct nlattr *attrs[], struct nlmsghdr *n,
     84			struct netlink_skb_parms *req);
     85	int (*delete)(struct dn_fib_table *t, struct rtmsg *r,
     86			struct nlattr *attrs[], struct nlmsghdr *n,
     87			struct netlink_skb_parms *req);
     88	int (*lookup)(struct dn_fib_table *t, const struct flowidn *fld,
     89			struct dn_fib_res *res);
     90	int (*flush)(struct dn_fib_table *t);
     91	int (*dump)(struct dn_fib_table *t, struct sk_buff *skb, struct netlink_callback *cb);
     92
     93	unsigned char data[];
     94};
     95
     96#ifdef CONFIG_DECNET_ROUTER
     97/*
     98 * dn_fib.c
     99 */
    100void dn_fib_init(void);
    101void dn_fib_cleanup(void);
    102
    103int dn_fib_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);
    104struct dn_fib_info *dn_fib_create_info(const struct rtmsg *r,
    105				       struct nlattr *attrs[],
    106				       const struct nlmsghdr *nlh, int *errp);
    107int dn_fib_semantic_match(int type, struct dn_fib_info *fi,
    108			  const struct flowidn *fld, struct dn_fib_res *res);
    109void dn_fib_release_info(struct dn_fib_info *fi);
    110void dn_fib_flush(void);
    111void dn_fib_select_multipath(const struct flowidn *fld, struct dn_fib_res *res);
    112
    113/*
    114 * dn_tables.c
    115 */
    116struct dn_fib_table *dn_fib_get_table(u32 n, int creat);
    117struct dn_fib_table *dn_fib_empty_table(void);
    118void dn_fib_table_init(void);
    119void dn_fib_table_cleanup(void);
    120
    121/*
    122 * dn_rules.c
    123 */
    124void dn_fib_rules_init(void);
    125void dn_fib_rules_cleanup(void);
    126unsigned int dnet_addr_type(__le16 addr);
    127int dn_fib_lookup(struct flowidn *fld, struct dn_fib_res *res);
    128
    129int dn_fib_dump(struct sk_buff *skb, struct netlink_callback *cb);
    130
    131void dn_fib_free_info(struct dn_fib_info *fi);
    132
    133static inline void dn_fib_info_put(struct dn_fib_info *fi)
    134{
    135	if (refcount_dec_and_test(&fi->fib_clntref))
    136		dn_fib_free_info(fi);
    137}
    138
    139static inline void dn_fib_res_put(struct dn_fib_res *res)
    140{
    141	if (res->fi)
    142		dn_fib_info_put(res->fi);
    143	if (res->r)
    144		fib_rule_put(res->r);
    145}
    146
    147#else /* Endnode */
    148
    149#define dn_fib_init()  do { } while(0)
    150#define dn_fib_cleanup() do { } while(0)
    151
    152#define dn_fib_lookup(fl, res) (-ESRCH)
    153#define dn_fib_info_put(fi) do { } while(0)
    154#define dn_fib_select_multipath(fl, res) do { } while(0)
    155#define dn_fib_rules_policy(saddr,res,flags) (0)
    156#define dn_fib_res_put(res) do { } while(0)
    157
    158#endif /* CONFIG_DECNET_ROUTER */
    159
    160static inline __le16 dnet_make_mask(int n)
    161{
    162	if (n)
    163		return cpu_to_le16(~((1 << (16 - n)) - 1));
    164	return cpu_to_le16(0);
    165}
    166
    167#endif /* _NET_DN_FIB_H */