96 lines
1.8 KiB
C
96 lines
1.8 KiB
C
|
/*
|
||
|
|
*
|
||
|
|
* 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 {
|
||
|
|
__u32 daddr;
|
||
|
|
__u32 saddr;
|
||
|
|
__u32 fwmark;
|
||
|
|
__u8 tos;
|
||
|
|
__u8 scope;
|
||
|
|
} ip4_u;
|
||
|
|
|
||
|
|
struct {
|
||
|
|
struct in6_addr daddr;
|
||
|
|
struct in6_addr saddr;
|
||
|
|
__u32 flowlabel;
|
||
|
|
} ip6_u;
|
||
|
|
|
||
|
|
struct {
|
||
|
|
__u16 daddr;
|
||
|
|
__u16 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_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 {
|
||
|
|
__u16 sport;
|
||
|
|
__u16 dport;
|
||
|
|
} ports;
|
||
|
|
|
||
|
|
struct {
|
||
|
|
__u8 type;
|
||
|
|
__u8 code;
|
||
|
|
} icmpt;
|
||
|
|
|
||
|
|
struct {
|
||
|
|
__u16 sport;
|
||
|
|
__u16 dport;
|
||
|
|
__u8 objnum;
|
||
|
|
__u8 objnamel; /* Not 16 bits since max val is 16 */
|
||
|
|
__u8 objname[16]; /* Not zero terminated */
|
||
|
|
} dnports;
|
||
|
|
|
||
|
|
__u32 spi;
|
||
|
|
} 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
|
||
|
|
} __attribute__((__aligned__(BITS_PER_LONG/8)));
|
||
|
|
|
||
|
|
#define FLOW_DIR_IN 0
|
||
|
|
#define FLOW_DIR_OUT 1
|
||
|
|
#define FLOW_DIR_FWD 2
|
||
|
|
|
||
|
|
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
|