a210d01ae3
ip_route_output() contains a check to make sure that no flows with non-local source IP addresses are routed. This obviously makes using such addresses impossible. This patch introduces a flowi flag which makes omitting this check possible. The new flag provides a way of handling transparent and non-transparent connections differently. Signed-off-by: Julian Anastasov <ja@ssi.bg> Signed-off-by: KOVACS Krisztian <hidden@sch.bme.hu> Signed-off-by: David S. Miller <davem@davemloft.net>
102 lines
1.9 KiB
C
102 lines
1.9 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;
|
|
__u32 mark;
|
|
|
|
union {
|
|
struct {
|
|
__be32 daddr;
|
|
__be32 saddr;
|
|
__u8 tos;
|
|
__u8 scope;
|
|
} ip4_u;
|
|
|
|
struct {
|
|
struct in6_addr daddr;
|
|
struct in6_addr saddr;
|
|
__be32 flowlabel;
|
|
} ip6_u;
|
|
|
|
struct {
|
|
__le16 daddr;
|
|
__le16 saddr;
|
|
__u8 scope;
|
|
} dn_u;
|
|
} nl_u;
|
|
#define fld_dst nl_u.dn_u.daddr
|
|
#define fld_src nl_u.dn_u.saddr
|
|
#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_tos nl_u.ip4_u.tos
|
|
#define fl4_scope nl_u.ip4_u.scope
|
|
|
|
__u8 proto;
|
|
__u8 flags;
|
|
#define FLOWI_FLAG_ANYSRC 0x01
|
|
union {
|
|
struct {
|
|
__be16 sport;
|
|
__be16 dport;
|
|
} ports;
|
|
|
|
struct {
|
|
__u8 type;
|
|
__u8 code;
|
|
} icmpt;
|
|
|
|
struct {
|
|
__le16 sport;
|
|
__le16 dport;
|
|
} dnports;
|
|
|
|
__be32 spi;
|
|
|
|
struct {
|
|
__u8 type;
|
|
} mht;
|
|
} 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
|
|
#define fl_mh_type uli_u.mht.type
|
|
__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 int (*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;
|
|
|
|
static inline int flow_cache_uli_match(struct flowi *fl1, struct flowi *fl2)
|
|
{
|
|
return (fl1->proto == fl2->proto &&
|
|
!memcmp(&fl1->uli_u, &fl2->uli_u, sizeof(fl1->uli_u)));
|
|
}
|
|
|
|
#endif
|