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
74 #define fl_ip_sport uli_u.ports.sport
75 #define fl_ip_dport uli_u.ports.dport
76 #define fl_icmp_type uli_u.icmpt.type
77 #define fl_icmp_code uli_u.icmpt.code
78 #define fl_ipsec_spi uli_u.spi
79 #define fl_mh_type uli_u.mht.type
80 __u32 secid; /* used by xfrm; see secid.txt */
81 } __attribute__((__aligned__(BITS_PER_LONG/8)));
84 #define FLOW_DIR_OUT 1
85 #define FLOW_DIR_FWD 2
89 struct flow_cache_ops;
91 struct flow_cache_object {
92 const struct flow_cache_ops *ops;
95 struct flow_cache_ops {
96 struct flow_cache_object *(*get)(struct flow_cache_object *);
97 int (*check)(struct flow_cache_object *);
98 void (*delete)(struct flow_cache_object *);
101 typedef struct flow_cache_object *(*flow_resolve_t)(
102 struct net *net, struct flowi *key, u16 family,
103 u8 dir, struct flow_cache_object *oldobj, void *ctx);
105 extern struct flow_cache_object *flow_cache_lookup(
106 struct net *net, struct flowi *key, u16 family,
107 u8 dir, flow_resolve_t resolver, void *ctx);
109 extern void flow_cache_flush(void);
110 extern atomic_t flow_cache_genid;
112 static inline int flow_cache_uli_match(struct flowi *fl1, struct flowi *fl2)
114 return (fl1->proto == fl2->proto &&
115 !memcmp(&fl1->uli_u, &fl2->uli_u, sizeof(fl1->uli_u)));