3 * Generic internet FLOW.
10 #include <linux/socket.h>
11 #include <linux/in6.h>
12 #include <linux/atomic.h>
22 #define FLOWI_FLAG_ANYSRC 0x01
23 #define FLOWI_FLAG_PRECOW_METRICS 0x02
24 #define FLOWI_FLAG_CAN_SLEEP 0x04
53 struct flowi_common __fl_common
;
54 #define flowi4_oif __fl_common.flowic_oif
55 #define flowi4_iif __fl_common.flowic_iif
56 #define flowi4_mark __fl_common.flowic_mark
57 #define flowi4_tos __fl_common.flowic_tos
58 #define flowi4_scope __fl_common.flowic_scope
59 #define flowi4_proto __fl_common.flowic_proto
60 #define flowi4_flags __fl_common.flowic_flags
61 #define flowi4_secid __fl_common.flowic_secid
63 /* (saddr,daddr) must be grouped, same order as in IP header */
68 #define fl4_sport uli.ports.sport
69 #define fl4_dport uli.ports.dport
70 #define fl4_icmp_type uli.icmpt.type
71 #define fl4_icmp_code uli.icmpt.code
72 #define fl4_ipsec_spi uli.spi
73 #define fl4_mh_type uli.mht.type
74 #define fl4_gre_key uli.gre_key
75 } __attribute__((__aligned__(BITS_PER_LONG
/8)));
77 static inline void flowi4_init_output(struct flowi4
*fl4
, int oif
,
78 __u32 mark
, __u8 tos
, __u8 scope
,
79 __u8 proto
, __u8 flags
,
80 __be32 daddr
, __be32 saddr
,
81 __be16 dport
, __be16 sport
)
83 fl4
->flowi4_oif
= oif
;
85 fl4
->flowi4_mark
= mark
;
86 fl4
->flowi4_tos
= tos
;
87 fl4
->flowi4_scope
= scope
;
88 fl4
->flowi4_proto
= proto
;
89 fl4
->flowi4_flags
= flags
;
90 fl4
->flowi4_secid
= 0;
93 fl4
->fl4_dport
= dport
;
94 fl4
->fl4_sport
= sport
;
99 struct flowi_common __fl_common
;
100 #define flowi6_oif __fl_common.flowic_oif
101 #define flowi6_iif __fl_common.flowic_iif
102 #define flowi6_mark __fl_common.flowic_mark
103 #define flowi6_tos __fl_common.flowic_tos
104 #define flowi6_scope __fl_common.flowic_scope
105 #define flowi6_proto __fl_common.flowic_proto
106 #define flowi6_flags __fl_common.flowic_flags
107 #define flowi6_secid __fl_common.flowic_secid
108 struct in6_addr daddr
;
109 struct in6_addr saddr
;
112 #define fl6_sport uli.ports.sport
113 #define fl6_dport uli.ports.dport
114 #define fl6_icmp_type uli.icmpt.type
115 #define fl6_icmp_code uli.icmpt.code
116 #define fl6_ipsec_spi uli.spi
117 #define fl6_mh_type uli.mht.type
118 #define fl6_gre_key uli.gre_key
119 } __attribute__((__aligned__(BITS_PER_LONG
/8)));
122 struct flowi_common __fl_common
;
123 #define flowidn_oif __fl_common.flowic_oif
124 #define flowidn_iif __fl_common.flowic_iif
125 #define flowidn_mark __fl_common.flowic_mark
126 #define flowidn_scope __fl_common.flowic_scope
127 #define flowidn_proto __fl_common.flowic_proto
128 #define flowidn_flags __fl_common.flowic_flags
132 #define fld_sport uli.ports.sport
133 #define fld_dport uli.ports.dport
134 } __attribute__((__aligned__(BITS_PER_LONG
/8)));
138 struct flowi_common __fl_common
;
143 #define flowi_oif u.__fl_common.flowic_oif
144 #define flowi_iif u.__fl_common.flowic_iif
145 #define flowi_mark u.__fl_common.flowic_mark
146 #define flowi_tos u.__fl_common.flowic_tos
147 #define flowi_scope u.__fl_common.flowic_scope
148 #define flowi_proto u.__fl_common.flowic_proto
149 #define flowi_flags u.__fl_common.flowic_flags
150 #define flowi_secid u.__fl_common.flowic_secid
151 } __attribute__((__aligned__(BITS_PER_LONG
/8)));
153 static inline struct flowi
*flowi4_to_flowi(struct flowi4
*fl4
)
155 return container_of(fl4
, struct flowi
, u
.ip4
);
158 static inline struct flowi
*flowi6_to_flowi(struct flowi6
*fl6
)
160 return container_of(fl6
, struct flowi
, u
.ip6
);
163 static inline struct flowi
*flowidn_to_flowi(struct flowidn
*fldn
)
165 return container_of(fldn
, struct flowi
, u
.dn
);
168 typedef unsigned long flow_compare_t
;
170 static inline size_t flow_key_size(u16 family
)
174 BUILD_BUG_ON(sizeof(struct flowi4
) % sizeof(flow_compare_t
));
175 return sizeof(struct flowi4
) / sizeof(flow_compare_t
);
177 BUILD_BUG_ON(sizeof(struct flowi6
) % sizeof(flow_compare_t
));
178 return sizeof(struct flowi6
) / sizeof(flow_compare_t
);
180 BUILD_BUG_ON(sizeof(struct flowidn
) % sizeof(flow_compare_t
));
181 return sizeof(struct flowidn
) / sizeof(flow_compare_t
);
186 #define FLOW_DIR_IN 0
187 #define FLOW_DIR_OUT 1
188 #define FLOW_DIR_FWD 2
192 struct flow_cache_ops
;
194 struct flow_cache_object
{
195 const struct flow_cache_ops
*ops
;
198 struct flow_cache_ops
{
199 struct flow_cache_object
*(*get
)(struct flow_cache_object
*);
200 int (*check
)(struct flow_cache_object
*);
201 void (*delete)(struct flow_cache_object
*);
204 typedef struct flow_cache_object
*(*flow_resolve_t
)(
205 struct net
*net
, const struct flowi
*key
, u16 family
,
206 u8 dir
, struct flow_cache_object
*oldobj
, void *ctx
);
208 extern struct flow_cache_object
*flow_cache_lookup(
209 struct net
*net
, const struct flowi
*key
, u16 family
,
210 u8 dir
, flow_resolve_t resolver
, void *ctx
);
212 extern void flow_cache_flush(void);
213 extern void flow_cache_flush_deferred(void);
214 extern atomic_t flow_cache_genid
;