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Add test case for tunnel

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This commit is contained in:
luwenpeng
2024-06-19 14:43:32 +08:00
parent 327d6e7b14
commit c3fd452793
17 changed files with 933 additions and 138 deletions
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18
include/stellar/layer.h
View File

@@ -47,14 +47,13 @@ enum layer_proto
// L4 -- tunnel
LAYER_PROTO_VXLAN = 61,
LAYER_PROTO_GTPV1_U = 62,
LAYER_PROTO_GTP = 62,
};
struct layer
{
enum layer_proto proto;
uint16_t payload_len;
uint16_t header_len;
uint16_t hdr_len;
union
{
struct ethhdr *eth;
@@ -65,26 +64,25 @@ struct layer
struct icmphdr *icmp4;
struct icmp6_hdr *icmp6;
struct mpls_label *mpls;
const char *raw;
} header;
const char *payload;
char *raw;
} hdr;
};
int packet_get_layer_count(const struct packet *pkt);
// return 0: success 
// return -1: failed
int packet_get_layer(const struct packet *pkt, int idx, struct layer *out);
int packet_get_layer_by_idx(const struct packet *pkt, int idx, struct layer *out);
#define PACKET_FOREACH_LAYER_INORDER(pkt, layer) \
for (int i = 0; i < packet_get_layer_count(pkt) && packet_get_layer(pkt, i, &layer) == 0; i++)
for (int i = 0; i < packet_get_layer_count(pkt) && packet_get_layer_by_idx(pkt, i, &layer) == 0; i++)
#define PACKET_FOREACH_LAYER_REVERSE(pkt, layer) \
for (int i = packet_get_layer_count(pkt) - 1; i >= 0 && packet_get_layer(pkt, i, &layer) == 0; i--)
for (int i = packet_get_layer_count(pkt) - 1; i >= 0 && packet_get_layer_by_idx(pkt, i, &layer) == 0; i--)
#define PACKET_GETALL_LAYERS(pkt, layers) \
{ \
int num = MIN(packet_get_layer_count(pkt), (sizeof(layers) / sizeof(layers[0]))); \
for (int i = 0; i < num && packet_get_layer(pkt, i, &layers[i]) == 0; i++) \
for (int i = 0; i < num && packet_get_layer_by_idx(pkt, i, &layers[i]) == 0; i++) \
/* void */; \
return num; \
}

40
include/stellar/tunnel.h
View File

@@ -6,30 +6,26 @@ extern "C"
{
#endif
#include <stdint.h>
#include "layer.h"
enum tunnel_type
{
// none tunnel
TUNNEL_NONE = 0, // contain layers: IPv4 + TCP
// contain layers: IPv4 + UDP
// contain layers: IPv4
// contain layers: IPv6 + TCP
// contain layers: IPv6 + UDP
// contain layers: IPv6
TUNNEL_IPV4 = 1, // contain layers: IPv4, (next inner layer must be IPv4 / IPv6)
TUNNEL_IPV6 = 2, // contain layers: IPv6, (next inner layer must be IPv4 / IPv6)
// GRE tunnel
TUNNEL_GRE, // contain layers: IPv4 + GRE
// contain layers: IPv6 + GRE
TUNNEL_GRE = 3, // contain layers: IPv4 + GRE
// contain layers: IPv6 + GRE
// GTP tunnel
TUNNEL_GTP, // contain layers: IPv4 + UDP + GTP
// contain layers: IPv6 + UDP + GTP
TUNNEL_GTP = 4, // contain layers: IPv4 + UDP + GTP
// contain layers: IPv6 + UDP + GTP
// IP tunnel
TUNNEL_IPV4, // contain layers: IPv4, (next inner layer must be IPv4 / IPv6)
TUNNEL_IPV6, // contain layers: IPv6, (next inner layer must be IPv4 / IPv6)
TUNNEL_VXLAN = 5, // contain layers: IPv4 + UDP + VXLAN
// contain layers: IPv6 + UDP + VXLAN
TUNNEL_L2TP = 6, // contain layers: IPv4 + UDP + L2TP
// contain layers: IPv6 + UDP + L2TP
TUNNEL_TEREDO = 7, // contain layers: IPv4 + UDP, (next inner layer must be IPv6)
};
#define MAX_LAYERS_PER_TUNNEL 3
@@ -37,25 +33,25 @@ struct tunnel
{
enum tunnel_type type;
int used;
int layer_count;
struct layer layers[MAX_LAYERS_PER_TUNNEL];
};
int packet_get_tunnel_count(const struct packet *pkt);
// return 0: success 
// return -1: failed
int packet_get_tunnel(const struct packet *pkt, int idx, struct tunnel *out);
int packet_get_tunnel_by_idx(const struct packet *pkt, int idx, struct tunnel *out);
#define PACKET_FOREACH_TUNNEL_INORDER(pkt, tunnel) \
for (int i = 0; i < packet_get_tunnel_count(pkt) && packet_get_tunnel(pkt, i, &tunnel) == 0; i++)
for (int i = 0; i < packet_get_tunnel_count(pkt) && packet_get_tunnel_by_idx(pkt, i, &tunnel) == 0; i++)
#define PACKET_FOREACH_TUNNEL_REVERSE(pkt, tunnel) \
for (int i = packet_get_tunnel_count(pkt) - 1; i >= 0 && packet_get_tunnel(pkt, i, &tunnel) == 0; i--)
for (int i = packet_get_tunnel_count(pkt) - 1; i >= 0 && packet_get_tunnel_by_idx(pkt, i, &tunnel) == 0; i--)
#define PACKET_GETALL_TUNNELS(pkt, tunnels) \
{ \
int num = MIN(packet_get_tunnel_count(pkt), (sizeof(tunnels) / sizeof(tunnels[0]))); \
for (int i = 0; i < num && packet_get_tunnel(pkt, i, &tunnels[i]) == 0; i++) \
for (int i = 0; i < num && packet_get_tunnel_by_idx(pkt, i, &tunnels[i]) == 0; i++) \
/* void */; \
return num; \
}