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#ifndef _CONNTRACK_PROTO_ESP_H
#define _CONNTRACK_PROTO_ESP_H
#include <asm/byteorder.h>
/* ESP PROTOCOL HEADER */
/* ESP Variate field */
#define ESP_PROTOCOL (0x32)
/* ESP is a mess*/
struct esp_hdr {
__u32 spi;
__u32 seq;
};
/* this is part of ip_conntrack */
struct ip_ct_esp {
unsigned int stream_timeout;
unsigned int timeout;
};
/* this is part of ip_conntrack_expect */
struct ip_ct_esp_expect {
struct ip_ct_esp_spi *spi_orig, *spi_reply;
};
#ifdef __KERNEL__
struct ip_conntrack_expect;
/* conntrack private data */
struct ip_ct_esp_master
{
unsigned int sip;
unsigned int dip;
unsigned int spi;
unsigned int dir;
};
/* conntrack isakmp data */
struct isakmp_hdr
{
unsigned int init_cookie[2];
unsigned int resp_cookie[2];
unsigned int next_payload :8,
maj_ver :4,
min_ver :4,
exchang_type:8,
flag:8;
unsigned int msg_id;
unsigned int len;
};
/* structure for original ip <-> reply spi to find correct ip */
struct ip_ct_esp_spi
{
struct list_head list;
struct timer_list timeout; /* Timer for list destroying */
//struct ip_ct_esp_master esp_master;
struct ip_conntrack_tuple esp_master;
};
unsigned int esp_packet_in(const struct iphdr *iph, u_int32_t *sip, u_int32_t *dip);
unsigned int esp_packet_out(const struct iphdr *iph, unsigned int len,enum ip_conntrack_info ctinfo );
#endif /* __KERNEL__ */
#endif /* _CONNTRACK_PROTO_ESP_H */
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