3 * Generic internet FLOW.
10 #include <linux/in6.h>
11 #include <asm/atomic.h>
21 #define FLOWI_FLAG_ANYSRC 0x01
22 #define FLOWI_FLAG_PRECOW_METRICS 0x02
23 #define FLOWI_FLAG_CAN_SLEEP 0x04
33 struct in6_addr daddr
;
34 struct in6_addr saddr
;
44 #define fld_dst nl_u.dn_u.daddr
45 #define fld_src nl_u.dn_u.saddr
46 #define fld_scope nl_u.dn_u.scope
47 #define fl6_dst nl_u.ip6_u.daddr
48 #define fl6_src nl_u.ip6_u.saddr
49 #define fl6_flowlabel nl_u.ip6_u.flowlabel
50 #define fl4_dst nl_u.ip4_u.daddr
51 #define fl4_src nl_u.ip4_u.saddr
53 #define fl4_scope scope
78 #define fl_ip_sport uli_u.ports.sport
79 #define fl_ip_dport uli_u.ports.dport
80 #define fl_icmp_type uli_u.icmpt.type
81 #define fl_icmp_code uli_u.icmpt.code
82 #define fl_ipsec_spi uli_u.spi
83 #define fl_mh_type uli_u.mht.type
84 #define fl_gre_key uli_u.gre_key
85 } __attribute__((__aligned__(BITS_PER_LONG
/8)));
88 #define FLOW_DIR_OUT 1
89 #define FLOW_DIR_FWD 2
93 struct flow_cache_ops
;
95 struct flow_cache_object
{
96 const struct flow_cache_ops
*ops
;
99 struct flow_cache_ops
{
100 struct flow_cache_object
*(*get
)(struct flow_cache_object
*);
101 int (*check
)(struct flow_cache_object
*);
102 void (*delete)(struct flow_cache_object
*);
105 typedef struct flow_cache_object
*(*flow_resolve_t
)(
106 struct net
*net
, const struct flowi
*key
, u16 family
,
107 u8 dir
, struct flow_cache_object
*oldobj
, void *ctx
);
109 extern struct flow_cache_object
*flow_cache_lookup(
110 struct net
*net
, const struct flowi
*key
, u16 family
,
111 u8 dir
, flow_resolve_t resolver
, void *ctx
);
113 extern void flow_cache_flush(void);
114 extern atomic_t flow_cache_genid
;
116 static inline int flow_cache_uli_match(const struct flowi
*fl1
,
117 const struct flowi
*fl2
)
119 return (fl1
->proto
== fl2
->proto
&&
120 !memcmp(&fl1
->uli_u
, &fl2
->uli_u
, sizeof(fl1
->uli_u
)));