}__attribute__((packed));
+struct eth_header {
+ uchar_t dest[6];
+ uchar_t src[6];
+ uint16_t type; // indicates layer 3 protocol type
+}__attribute__((packed));
+
+struct ip_header {
+ uint8_t version: 4;
+ uint8_t hdr_len: 4;
+ uchar_t tos;
+ uint16_t total_len;
+ uint16_t id;
+ uint8_t flags: 3;
+ uint16_t offset: 13;
+ uchar_t ttl;
+ uchar_t proto;
+ uint16_t cksum;
+ uint32_t src_addr;
+ uint32_t dst_addr;
+}__attribute__((packed));
+
+struct udp_header {
+ uint16_t src_port;
+ uint16_t dst_port;
+ uint16_t len;
+ uint16_t csum;//set to zero, disable the xsum
+}__attribute__((packed));
+
+struct udp_link_header {
+ struct eth_header eth_hdr;
+ struct ip_header ip_hdr;
+ struct udp_header udp_hdr;
+}__attribute__((packed));
+
+#define DEVICE_NAME_LEN 20
struct vnet_if_device {
- char name[50];
+ char name[DEVICE_NAME_LEN];
uchar_t mac_addr[6];
struct vm_device *dev;
}__attribute__((packed));
-#define VNET_HEADER_LEN 64
struct vnet_if_link {
prot_type_t pro_type; //protocal type of this link
unsigned long dest_ip;
uint16_t dest_port;
- uchar_t vnet_header[VNET_HEADER_LEN]; //header applied to the packet in/out from this link
- uint16_t hdr_len;
+ struct udp_link_header vnet_header; //header applied to the packet in/out from this link
int (*input)(uchar_t *data, uint32_t len, void *private_data);
}__attribute__((packed));
-int v3_vnet_send_pkt(uchar_t *buf, int length);
+int v3_vnet_send_rawpkt(uchar_t *buf, int len, void *private_data);
+int v3_vnet_send_udppkt(uchar_t *buf, int len, void *private_data);
//int vnet_register_device(struct vm_device *vdev,
// char *dev_name,
// uchar_t mac[6],