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
52 #define FLOWI_FLAG_PRECOW_METRICS 0x02
76 #define fl_ip_sport uli_u.ports.sport
77 #define fl_ip_dport uli_u.ports.dport
78 #define fl_icmp_type uli_u.icmpt.type
79 #define fl_icmp_code uli_u.icmpt.code
80 #define fl_ipsec_spi uli_u.spi
81 #define fl_mh_type uli_u.mht.type
82 #define fl_gre_key uli_u.gre_key
83 __u32 secid
; /* used by xfrm; see secid.txt */
84 } __attribute__((__aligned__(BITS_PER_LONG
/8)));
87 #define FLOW_DIR_OUT 1
88 #define FLOW_DIR_FWD 2
92 struct flow_cache_ops
;
94 struct flow_cache_object
{
95 const struct flow_cache_ops
*ops
;
98 struct flow_cache_ops
{
99 struct flow_cache_object
*(*get
)(struct flow_cache_object
*);
100 int (*check
)(struct flow_cache_object
*);
101 void (*delete)(struct flow_cache_object
*);
104 typedef struct flow_cache_object
*(*flow_resolve_t
)(
105 struct net
*net
, const struct flowi
*key
, u16 family
,
106 u8 dir
, struct flow_cache_object
*oldobj
, void *ctx
);
108 extern struct flow_cache_object
*flow_cache_lookup(
109 struct net
*net
, const struct flowi
*key
, u16 family
,
110 u8 dir
, flow_resolve_t resolver
, void *ctx
);
112 extern void flow_cache_flush(void);
113 extern atomic_t flow_cache_genid
;
115 static inline int flow_cache_uli_match(const struct flowi
*fl1
,
116 const struct flowi
*fl2
)
118 return (fl1
->proto
== fl2
->proto
&&
119 !memcmp(&fl1
->uli_u
, &fl2
->uli_u
, sizeof(fl1
->uli_u
)));