48 lines
1.2 KiB
C
48 lines
1.2 KiB
C
#ifndef _PACKET_H_
|
|
#define _PACKET_H_
|
|
|
|
#include <arpa/inet.h>
|
|
#include <netinet/ip.h>
|
|
#include <netinet/ip6.h>
|
|
|
|
#define IPPROTO_HIDE_EID 0xfd
|
|
|
|
|
|
struct packet {
|
|
union {
|
|
#ifdef __USE_BSD
|
|
struct ip ip;
|
|
#else
|
|
struct iphdr ip;
|
|
#endif
|
|
struct ip6_hdr ip6;
|
|
} hdr;
|
|
char payload[IP_MAXPACKET]; /* payload is this - header size, but OK */
|
|
};
|
|
|
|
// wrapper.c expects this name
|
|
#define recv_pkt packet
|
|
|
|
|
|
// It's all our code that uses this. 12 is much more than we need to
|
|
// construct a wrapped packet at the moment.
|
|
//
|
|
// initial usage:
|
|
// 0 - wrapping ip header, including enc_size
|
|
// 1 - encrypted portion of payload, in scratch.
|
|
// 2 - unencrypted portion of payload, in recv_pkt
|
|
#define MAX_IOVS 12
|
|
struct rsp_data {
|
|
int count;
|
|
struct iovec iovs[MAX_IOVS];
|
|
unsigned char scratch[IP_MAXPACKET]; // somewhere easy to put results
|
|
};
|
|
|
|
void compute_ip_checksum( struct iphdr* pkt );
|
|
|
|
int wrap_ipv4_packet(struct rlocs* reg, struct recv_pkt* pkt, struct rsp_data* out);
|
|
int wrap_ipv6_packet(struct rlocs* reg, struct recv_pkt* pkt, struct rsp_data* out);
|
|
|
|
int unwrap_ipv4_packet(struct rlocs* reg, struct recv_pkt* pkt, struct rsp_data* out);
|
|
int unwrap_ipv6_packet(struct rlocs* reg, struct recv_pkt* pkt, struct rsp_data* out);
|
|
#endif |