| /* |
| * |
| * Generic internet FLOW. |
| * |
| */ |
| |
| #ifndef _NET_FLOW_H |
| #define _NET_FLOW_H |
| |
| #include <linux/in6.h> |
| #include <asm/atomic.h> |
| |
| struct flowi { |
| int oif; |
| int iif; |
| |
| union { |
| struct { |
| __be32 daddr; |
| __be32 saddr; |
| __u32 fwmark; |
| __u8 tos; |
| __u8 scope; |
| } ip4_u; |
| |
| struct { |
| struct in6_addr daddr; |
| struct in6_addr saddr; |
| __u32 fwmark; |
| __u32 flowlabel; |
| } ip6_u; |
| |
| struct { |
| __le16 daddr; |
| __le16 saddr; |
| __u32 fwmark; |
| __u8 scope; |
| } dn_u; |
| } nl_u; |
| #define fld_dst nl_u.dn_u.daddr |
| #define fld_src nl_u.dn_u.saddr |
| #define fld_fwmark nl_u.dn_u.fwmark |
| #define fld_scope nl_u.dn_u.scope |
| #define fl6_dst nl_u.ip6_u.daddr |
| #define fl6_src nl_u.ip6_u.saddr |
| #define fl6_fwmark nl_u.ip6_u.fwmark |
| #define fl6_flowlabel nl_u.ip6_u.flowlabel |
| #define fl4_dst nl_u.ip4_u.daddr |
| #define fl4_src nl_u.ip4_u.saddr |
| #define fl4_fwmark nl_u.ip4_u.fwmark |
| #define fl4_tos nl_u.ip4_u.tos |
| #define fl4_scope nl_u.ip4_u.scope |
| |
| __u8 proto; |
| __u8 flags; |
| #define FLOWI_FLAG_MULTIPATHOLDROUTE 0x01 |
| union { |
| struct { |
| __be16 sport; |
| __be16 dport; |
| } ports; |
| |
| struct { |
| __u8 type; |
| __u8 code; |
| } icmpt; |
| |
| struct { |
| __le16 sport; |
| __le16 dport; |
| __u8 objnum; |
| __u8 objnamel; /* Not 16 bits since max val is 16 */ |
| __u8 objname[16]; /* Not zero terminated */ |
| } dnports; |
| |
| __u32 spi; |
| |
| #ifdef CONFIG_IPV6_MIP6 |
| struct { |
| __u8 type; |
| } mht; |
| #endif |
| } uli_u; |
| #define fl_ip_sport uli_u.ports.sport |
| #define fl_ip_dport uli_u.ports.dport |
| #define fl_icmp_type uli_u.icmpt.type |
| #define fl_icmp_code uli_u.icmpt.code |
| #define fl_ipsec_spi uli_u.spi |
| #ifdef CONFIG_IPV6_MIP6 |
| #define fl_mh_type uli_u.mht.type |
| #endif |
| __u32 secid; /* used by xfrm; see secid.txt */ |
| } __attribute__((__aligned__(BITS_PER_LONG/8))); |
| |
| #define FLOW_DIR_IN 0 |
| #define FLOW_DIR_OUT 1 |
| #define FLOW_DIR_FWD 2 |
| |
| struct sock; |
| typedef void (*flow_resolve_t)(struct flowi *key, u16 family, u8 dir, |
| void **objp, atomic_t **obj_refp); |
| |
| extern void *flow_cache_lookup(struct flowi *key, u16 family, u8 dir, |
| flow_resolve_t resolver); |
| extern void flow_cache_flush(void); |
| extern atomic_t flow_cache_genid; |
| |
| #endif |