3 * Generic internet FLOW.
10 #include <linux/in6.h>
11 #include <asm/atomic.h>
27 struct in6_addr daddr;
28 struct in6_addr saddr;
38 #define fld_dst nl_u.dn_u.daddr
39 #define fld_src nl_u.dn_u.saddr
40 #define fld_scope nl_u.dn_u.scope
41 #define fl6_dst nl_u.ip6_u.daddr
42 #define fl6_src nl_u.ip6_u.saddr
43 #define fl6_flowlabel nl_u.ip6_u.flowlabel
44 #define fl4_dst nl_u.ip4_u.daddr
45 #define fl4_src nl_u.ip4_u.saddr
46 #define fl4_tos nl_u.ip4_u.tos
47 #define fl4_scope nl_u.ip4_u.scope
51 #define FLOWI_FLAG_ANYSRC 0x01
75 #define fl_ip_sport uli_u.ports.sport
76 #define fl_ip_dport uli_u.ports.dport
77 #define fl_icmp_type uli_u.icmpt.type
78 #define fl_icmp_code uli_u.icmpt.code
79 #define fl_ipsec_spi uli_u.spi
80 #define fl_mh_type uli_u.mht.type
81 #define fl_gre_key uli_u.gre_key
82 __u32 secid; /* used by xfrm; see secid.txt */
83 } __attribute__((__aligned__(BITS_PER_LONG/8)));
86 #define FLOW_DIR_OUT 1
87 #define FLOW_DIR_FWD 2
91 struct flow_cache_ops;
93 struct flow_cache_object {
94 const struct flow_cache_ops *ops;
97 struct flow_cache_ops {
98 struct flow_cache_object *(*get)(struct flow_cache_object *);
99 int (*check)(struct flow_cache_object *);
100 void (*delete)(struct flow_cache_object *);
103 typedef struct flow_cache_object *(*flow_resolve_t)(
104 struct net *net, struct flowi *key, u16 family,
105 u8 dir, struct flow_cache_object *oldobj, void *ctx);
107 extern struct flow_cache_object *flow_cache_lookup(
108 struct net *net, struct flowi *key, u16 family,
109 u8 dir, flow_resolve_t resolver, void *ctx);
111 extern void flow_cache_flush(void);
112 extern atomic_t flow_cache_genid;
114 static inline int flow_cache_uli_match(struct flowi *fl1, struct flowi *fl2)
116 return (fl1->proto == fl2->proto &&
117 !memcmp(&fl1->uli_u, &fl2->uli_u, sizeof(fl1->uli_u)));