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144 lines
3.6 KiB
144 lines
3.6 KiB
#ifndef __NET_FIB_RULES_H |
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#define __NET_FIB_RULES_H |
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#include <linux/types.h> |
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#include <linux/slab.h> |
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#include <linux/netdevice.h> |
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#include <linux/fib_rules.h> |
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#include <net/flow.h> |
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#include <net/rtnetlink.h> |
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struct fib_rule { |
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struct list_head list; |
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int iifindex; |
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int oifindex; |
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u32 mark; |
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u32 mark_mask; |
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u32 flags; |
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u32 table; |
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u8 action; |
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u8 l3mdev; |
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/* 2 bytes hole, try to use */ |
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u32 target; |
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__be64 tun_id; |
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struct fib_rule __rcu *ctarget; |
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struct net *fr_net; |
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atomic_t refcnt; |
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u32 pref; |
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int suppress_ifgroup; |
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int suppress_prefixlen; |
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char iifname[IFNAMSIZ]; |
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char oifname[IFNAMSIZ]; |
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struct rcu_head rcu; |
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}; |
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typedef struct rt6_info *(*pol_lookup_t)(struct net *, |
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struct fib6_table *, |
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struct flowi6 *, int); |
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struct fib_lookup_arg { |
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pol_lookup_t lookup_ptr; |
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void *result; |
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struct fib_rule *rule; |
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u32 table; |
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int flags; |
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#define FIB_LOOKUP_NOREF 1 |
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#define FIB_LOOKUP_IGNORE_LINKSTATE 2 |
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}; |
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struct fib_rules_ops { |
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int family; |
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struct list_head list; |
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int rule_size; |
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int addr_size; |
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int unresolved_rules; |
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int nr_goto_rules; |
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int (*action)(struct fib_rule *, |
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struct flowi *, int, |
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struct fib_lookup_arg *); |
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bool (*suppress)(struct fib_rule *, |
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struct fib_lookup_arg *); |
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int (*match)(struct fib_rule *, |
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struct flowi *, int); |
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int (*configure)(struct fib_rule *, |
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struct sk_buff *, |
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struct fib_rule_hdr *, |
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struct nlattr **); |
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int (*delete)(struct fib_rule *); |
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int (*compare)(struct fib_rule *, |
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struct fib_rule_hdr *, |
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struct nlattr **); |
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int (*fill)(struct fib_rule *, struct sk_buff *, |
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struct fib_rule_hdr *); |
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size_t (*nlmsg_payload)(struct fib_rule *); |
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/* Called after modifications to the rules set, must flush |
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* the route cache if one exists. */ |
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void (*flush_cache)(struct fib_rules_ops *ops); |
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int nlgroup; |
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const struct nla_policy *policy; |
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struct list_head rules_list; |
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struct module *owner; |
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struct net *fro_net; |
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struct rcu_head rcu; |
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}; |
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#define FRA_GENERIC_POLICY \ |
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[FRA_IIFNAME] = { .type = NLA_STRING, .len = IFNAMSIZ - 1 }, \ |
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[FRA_OIFNAME] = { .type = NLA_STRING, .len = IFNAMSIZ - 1 }, \ |
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[FRA_PRIORITY] = { .type = NLA_U32 }, \ |
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[FRA_FWMARK] = { .type = NLA_U32 }, \ |
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[FRA_FWMASK] = { .type = NLA_U32 }, \ |
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[FRA_TABLE] = { .type = NLA_U32 }, \ |
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[FRA_SUPPRESS_PREFIXLEN] = { .type = NLA_U32 }, \ |
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[FRA_SUPPRESS_IFGROUP] = { .type = NLA_U32 }, \ |
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[FRA_GOTO] = { .type = NLA_U32 }, \ |
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[FRA_L3MDEV] = { .type = NLA_U8 } |
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static inline void fib_rule_get(struct fib_rule *rule) |
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{ |
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atomic_inc(&rule->refcnt); |
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} |
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static inline void fib_rule_put(struct fib_rule *rule) |
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{ |
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if (atomic_dec_and_test(&rule->refcnt)) |
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kfree_rcu(rule, rcu); |
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} |
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#ifdef CONFIG_NET_L3_MASTER_DEV |
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static inline u32 fib_rule_get_table(struct fib_rule *rule, |
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struct fib_lookup_arg *arg) |
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{ |
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return rule->l3mdev ? arg->table : rule->table; |
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} |
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#else |
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static inline u32 fib_rule_get_table(struct fib_rule *rule, |
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struct fib_lookup_arg *arg) |
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{ |
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return rule->table; |
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} |
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#endif |
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static inline u32 frh_get_table(struct fib_rule_hdr *frh, struct nlattr **nla) |
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{ |
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if (nla[FRA_TABLE]) |
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return nla_get_u32(nla[FRA_TABLE]); |
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return frh->table; |
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} |
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struct fib_rules_ops *fib_rules_register(const struct fib_rules_ops *, |
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struct net *); |
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void fib_rules_unregister(struct fib_rules_ops *); |
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int fib_rules_lookup(struct fib_rules_ops *, struct flowi *, int flags, |
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struct fib_lookup_arg *); |
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int fib_default_rule_add(struct fib_rules_ops *, u32 pref, u32 table, |
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u32 flags); |
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int fib_nl_newrule(struct sk_buff *skb, struct nlmsghdr *nlh); |
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int fib_nl_delrule(struct sk_buff *skb, struct nlmsghdr *nlh); |
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#endif
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