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
28 struct flowi_common __fl_common
;
29 #define flowi_oif __fl_common.flowic_oif
30 #define flowi_iif __fl_common.flowic_iif
31 #define flowi_mark __fl_common.flowic_mark
32 #define flowi_tos __fl_common.flowic_tos
33 #define flowi_scope __fl_common.flowic_scope
34 #define flowi_proto __fl_common.flowic_proto
35 #define flowi_flags __fl_common.flowic_flags
36 #define flowi_secid __fl_common.flowic_secid
45 struct in6_addr daddr
;
46 struct in6_addr saddr
;
56 #define fld_dst nl_u.dn_u.daddr
57 #define fld_src nl_u.dn_u.saddr
58 #define fld_scope nl_u.dn_u.scope
59 #define fl6_dst nl_u.ip6_u.daddr
60 #define fl6_src nl_u.ip6_u.saddr
61 #define fl6_flowlabel nl_u.ip6_u.flowlabel
62 #define fl4_dst nl_u.ip4_u.daddr
63 #define fl4_src nl_u.ip4_u.saddr
64 #define fl4_tos flowi_tos
65 #define fl4_scope flowi_scope
90 #define fl_ip_sport uli_u.ports.sport
91 #define fl_ip_dport uli_u.ports.dport
92 #define fl_icmp_type uli_u.icmpt.type
93 #define fl_icmp_code uli_u.icmpt.code
94 #define fl_ipsec_spi uli_u.spi
95 #define fl_mh_type uli_u.mht.type
96 #define fl_gre_key uli_u.gre_key
97 } __attribute__((__aligned__(BITS_PER_LONG
/8)));
100 #define FLOW_DIR_OUT 1
101 #define FLOW_DIR_FWD 2
105 struct flow_cache_ops
;
107 struct flow_cache_object
{
108 const struct flow_cache_ops
*ops
;
111 struct flow_cache_ops
{
112 struct flow_cache_object
*(*get
)(struct flow_cache_object
*);
113 int (*check
)(struct flow_cache_object
*);
114 void (*delete)(struct flow_cache_object
*);
117 typedef struct flow_cache_object
*(*flow_resolve_t
)(
118 struct net
*net
, const struct flowi
*key
, u16 family
,
119 u8 dir
, struct flow_cache_object
*oldobj
, void *ctx
);
121 extern struct flow_cache_object
*flow_cache_lookup(
122 struct net
*net
, const struct flowi
*key
, u16 family
,
123 u8 dir
, flow_resolve_t resolver
, void *ctx
);
125 extern void flow_cache_flush(void);
126 extern atomic_t flow_cache_genid
;
128 static inline int flow_cache_uli_match(const struct flowi
*fl1
,
129 const struct flowi
*fl2
)
131 return (fl1
->flowi_proto
== fl2
->flowi_proto
&&
132 !memcmp(&fl1
->uli_u
, &fl2
->uli_u
, sizeof(fl1
->uli_u
)));