* and the University of New Mexico. You can find out more at
* http://www.v3vee.org
*
- * Copyright (c) 2008, Jack Lange <jarusl@cs.northwestern.edu>
- * Copyright (c) 2008, The V3VEE Project <http://www.v3vee.org>
+ * Copyright (c) 2009, Lei Xia <lxia@northwestern.edu>
+ * Copyright (c) 2009, Yuan Tang <ytang@northwestern.edu>
+ * Copyright (c) 2009, Jack Lange <jarusl@cs.northwestern.edu>
+ * Copyright (c) 2009, Peter Dinda <pdinda@northwestern.edu
+ * Copyright (c) 2009, The V3VEE Project <http://www.v3vee.org>
* All rights reserved.
*
- * Author: Jack Lange <jarusl@cs.northwestern.edu>
+ * Author: Lei Xia <lxia@northwestern.edu>
+ * Yuan Tang <ytang@northwestern.edu>
+ * Jack Lange <jarusl@cs.northwestern.edu>
+ * Peter Dinda <pdinda@northwestern.edu
*
* This is free software. You are permitted to use,
* redistribute, and modify it as specified in the file "V3VEE_LICENSE".
*/
#include <devices/vnet.h>
-#include <palacios/vmm.h>
-static int vnet_server(void * arg) {
- // select loop
+#define MAX_ADDRESS 10
+typedef enum {LOCAL,REMOTE} ctype;
+
+struct handler{
+ int fd;
+ int local_address;
+ short local_port;
+ struct vnet_device *local_device;
+ int remote_address;
+ short remote_port;
+ struct vnet_device *remote_device;
+ struct ethAddr addresses[MAX_ADDRESS];
+ ctype local_config;
+ ctype remote_config;
+};
+
+
+typedef struct {
+ int size;
+ char data[ETHERNET_PACKET_LEN];
+ int index;
+}RawEthernetPacket;
+
+
+#define NUM_DEVICES 1
+#define NUM_HANDLERS 1
+
+static struct vnet_device *available_devices[NUM_DEVICES];
+
+struct handler *active_handlers[NUM_HANDLERS];
+
+static int bind_address = 0;
+static short bind_port = 22;
+//static char *vnet_version = "0.9";
+static int vnet_server = 0;
+static bool use_tcp = false;
+
+
+
+static void print_packet(char *pkt, int size)
+{
+ int i;
+
+ PrintDebug("Vnet: packet: size: %d\n", size);
+ for (i = 0; i < size; i ++)
+ PrintDebug("%x ", pkt[i]);
+ PrintDebug("\n");
+}
+
+
+#if !(ROUTE)
+static struct vnet_device *get_device(RawEthernetPacket *pt)
+{
+ return available_devices[0];
+}
+#endif
+
+static struct handler * get_handler()
+{
+
+ return active_handlers[0];
+}
+
+static inline bool add_handler(struct handler *hd)
+{
+ int num = 0;
+
+ while (active_handlers[num] != NULL) num ++;
+
+ if (num >= NUM_HANDLERS)
+ return false;
+
+ active_handlers[num] = hd;
+
+ return true;
+}
+
+static inline bool add_device(struct vnet_device *dev)
+{
+ int num = 0;
+
+ while (available_devices[num] != NULL) num ++;
+
+ if (num >= NUM_DEVICES)
+ return false;
+
+ available_devices[num] = dev;
+
+ return true;
+}
+
+
+int CreateAndSetupTcpSocket(const int bufsize, const bool nodelay, const bool nonblocking)
+{
+ int mysocket;
+
+ // create socket for connections
+ if ((mysocket = V3_Create_TCP_Socket()) < 0) {
+ return -1;
+ }
+
+ return mysocket;
+}
+
+int BindSocketwPort(const int mysocket, const int myport)
+{
+ if (V3_Bind_Socket(mysocket, myport) < 0) {
+ return -1;
+ }
+
+ return 0;
+}
+
+int ListenSocket(const int mysocket, const int maxc)
+{
+ return V3_Listen_Socket(mysocket, maxc);
+}
+
+int ConnectToHost(const int mysocket, const int hostip, const int port)
+{
+ return V3_Connect_To_IP(mysocket, hostip, port);
+}
+
+/*
+void close(int mysocket)
+{
+ V3_Close_Socket(mysocket);
+}
+*/
+
+#if 0 //May be needed later
+int SendTo(int const mysocket,
+ const unsigned ip, const int port,
+ const char *buf, const int len, const bool sendall)
+{
+ int left;
+ int sent;
+
+ if (!sendall) {
+ return V3_SendTo_IP(mysocket, ip, port, buf, len);
+ } else {
+ left = len;
+
+ while (left>0) {
+ sent = V3_SendTo_IP(mysocket, ip, port, buf, len);
+ if (sent < 0) {
+ return -1;
+ } else {
+ left-=sent;
+ }
+ }
+ return len;
+ }
+}
+
+
+int ReceiveFrom(const int mysocket,
+ const unsigned ip, const int port,
+ char *buf, const int len,
+ const bool recvall)
+{
+ int left;
+ int received;
+
+ if (!recvall) {
+ return V3_RecvFrom_IP(mysocket, ip, port, buf, len);
+ } else {
+ left = len;
+
+ while (left > 0) {
+ received = V3_RecvFrom_IP(mysocket, ip, port, buf, len);
+ if (received < 0) {
+ return -1;
+ } else if (received == 0) {
+ break;
+ } else {
+ left -= received;
+ }
+ }
+
+ return len-left;
+ }
+}
+
+
+int Send(int socketfd, const char *buf, const int len, const bool sendall)
+{
+ int left;
+ int sent;
+
+ if (!sendall) {
+ return V3_Send(socketfd, buf, len);
+ } else {
+ left = len;
+
+ while (left>0) {
+ sent = V3_Send(socketfd, &(buf[len-left]), left);
+
+ if (sent < 0) {
+ return -1;
+ } else if (sent == 0) {
+ break;
+ } else {
+ left -= sent;
+ }
+ }
+
+ return len-left;
+ }
+}
+
+int GetLine(int fd, char *buf, int size)
+{
+ int rc;
+ int received = 0;
+ char c;
+
+ while (1) {
+ rc = Receive(fd, &c, 1, true);
+
+ if (rc < 0) {
+ return rc;
+ }
+
+ if (rc == 0 || c == '\n') {
+ return received;
+ }
+
+ buf[received] = c;
+ received += rc;
+
+ if (received >= size)
+ break;
+ }
+
+ return received;
+}
+
+
+int PutLine(int mysocket, char *buf, int size)
+{
+ buf[size] = '\n';
+ return (Send(mysocket, buf, size+1, true) - 1);
+}
+#endif
+
+
+static int readall(const int fd, char *buf, const int len, const int oneshot, const int awaitblock)
+{
+ int rc;
+ int left;
+
+ left = len;
+
+ while (left > 0) {
+ rc = V3_Recv(fd, &(buf[len-left]), left);
+
+ if (oneshot) {
+ return rc;
+ }
+
+ if (rc <= 0) {
+ return rc;
+ } else {
+ left -= rc;
+ }
+ }
+
+ return len;
+}
+
+static int writeall(const int fd, const char *buf, const int len, const int oneshot, const int awaitblock)
+{
+ int rc;
+ int left;
+
+ left = len;
+
+ while (left > 0) {
+ rc = V3_Send(fd, &(buf[len-left]), left);
+
+ if (oneshot) {
+ return rc;
+ }
+
+ if (rc <= 0) {
+ return rc;
+ } else {
+ left -= rc;
+ }
+ }
+ return len;
+}
+
+static void RawEthernetPacketInit(RawEthernetPacket *pt, const char *data, const size_t size)
+{
+ pt->size = size;
+ memcpy(pt->data, data, size);
+}
+
+static bool RawEthernetPacketSerialize(RawEthernetPacket *pt, const int fd)
+{
+ if (writeall(fd,(char*)&(pt->size),sizeof(pt->size),0,1)!=sizeof(pt->size))
+ {
+ PrintError("Vnet: Serialization Exception\n");
+ return false;
+ }
+ if (writeall(fd,pt->data,pt->size,0,1)!=(int)(pt->size))
+ {
+ PrintError("Vnet: Serialization Exception\n");
+ return false;
+ }
+
+ return true;
+}
+
+static bool RawEthernetPacketUnserialize(RawEthernetPacket *pt, const int fd)
+{
+ if (readall(fd,(char*)&(pt->size),sizeof(pt->size),0,1) != sizeof(pt->size))
+ {
+ PrintError("Vnet: Unserialization Exception\n");
+ return false;
+ }
+ if (readall(fd,pt->data,pt->size,0,1) != pt->size)
+ {
+ PrintError("Vnet: Unserialization Exception\n");
+ return false;
+ }
+
+ return true;
+}
+
+static bool RawEthernetPacketSendUdp(RawEthernetPacket *pt, int sock_fd, int ip, short port)
+{
+ int size;
+
+ PrintDebug("Vnet: sending by UDP socket %d ip: %x, port: %d\n", sock_fd, ip, port);
+
+ if ((size = V3_SendTo_IP(sock_fd, ip, port, pt->data, pt->size)) != pt->size)
+ {
+ PrintError("Vnet: sending by UDP Exception, %x\n", size);
+ return false;
+ }
+
+ return true;
+}
+
+
+#if 0
+static void print_packet_addr(char *pkt)
+{
+ int i;
+
+ PrintDebug("Vnet: print_packet_destination_addr: ");
+ for (i = 8; i < 14; i ++)
+ PrintDebug("%x ", pkt[i]);
+ PrintDebug("\n");
+
+ PrintDebug("Vnet: print_packet_source_addr: ");
+ for (i = 14; i < 20; i ++)
+ PrintDebug("%x ", pkt[i]);
+ PrintDebug("\n");
+}
+
+/*
+static void print_device_addr(char *ethaddr)
+{
+ int i;
+
+ PrintDebug("Vnet: print_device_addr: ");
+ for (i = 0; i < 6; i ++)
+ PrintDebug("%x ", ethaddr[i]);
+ PrintDebug("\n");
+}
+*/
+#endif
+
+
+#if ROUTE //new routing accrding to VNET-VTL, no hash --TY
+
+struct topology g_links[MAX_LINKS];
+int g_num_links; //The current number of links
+int g_first_link;
+int g_last_link;
+
+struct routing g_routes[MAX_ROUTES];
+int g_num_routes; //The current number of routes
+int g_first_route;
+int g_last_route;
+
+struct device_list g_devices[MAX_DEVICES];
+int g_num_devices;
+int g_first_device;
+int g_last_device;
+
+#define in_range(c, lo, up) ((char)c >= lo && (char)c <= up)
+#define islower(c) in_range(c, 'a', 'z')
+
+//------------------hash function begin-------------------
+
+#define HASH_KEY_SIZE 16
+/* Hash key format:
+ * 0-5: src_eth_addr
+ * 6-11: dest_eth_addr
+ * 12: src type
+ * 13-16: src index
+ */
+ struct hash_key
+{
+ char *key_from_addr;
+};
+
+struct hash_value // This is the hash value, defined as a dynamic array. Format: 0: num_matched_routes, 1...n: matches[] -- TY
+{
+ int num_matched_routes;
+ int *matches;
+};
+/*
+ static int insert_some (struct hashtable * htable, struct hash_key *key, struct hash_value *value) {
+ return hashtable_insert(htable, (addr_t)key, (addr_t)value);
+ }
+*/
+
+DEFINE_HASHTABLE_INSERT(insert_some, struct hash_key *, struct hash_value *);
+DEFINE_HASHTABLE_SEARCH(search_some, struct hash_key *, struct hash_value);
+//DEFINE_HASHTABLE_REMOVE(remove_some, struct hash_key *, struct hash_value, 1);
+//DEFINE_HASHTABLE_ITERATOR_SEARCH(search_itr_some, struct key);
+
+struct hash_key *cache_key; //maybe these three variables should be defined as local variable. -- TY
+struct hash_value *cache_entry;
+struct hashtable *hash_route;
+
+/*
+malloc_key_value()
+{
+cache_key = (hash_key *)V3_Malloc(sizeof(hash_key));
+addr_t key = *cache_key;
+}
+*/
+ // This is the hash algorithm used for UNIX ELF object files
+inline size_t hash_from_key(const char * arg)
+{
+ size_t hash = 0;
+ size_t temp = 0;
+
+ int i;
+ for(i = 0; i < HASH_KEY_SIZE; i++) {
+ hash = (hash << 4) + *(arg + i) + i;
+ if ((temp = (hash & 0xF0000000))) {
+ hash ^= (temp >> 24);
+ }
+ hash &= ~temp;
+ }
+ PrintDebug("Hash Value: %lu\n", (unsigned long)hash);
+ return hash;
+}
+
+inline bool hash_key_equal(const char * left, const char * right)
+{
+ int i;
+ for(i = 0; i < HASH_KEY_SIZE; i++) {
+ if (left[i] != right[i]) {
+ PrintDebug("HASHes not equal\n");
+ return false;
+ }
+ }
+ return true;
+}
+
+void make_hash_key(char * hash_key, char src_addr[6], char dest_addr[6], char src_type, int src_index) {
+ int j;
+
+ for(j = 0; j < 6; j++) {
+ hash_key[j] = src_addr[j];
+ hash_key[j + 6] = dest_addr[j] + 1;
+ }
+
+ hash_key[12] = src_type;
+
+ *(int *)(hash_key + 12) = src_index;
}
-int v3_init_vnet(struct v3_vnet * vnet,
- int (*rx_pkt)(), // fix this...
- uint32_t ip, uint16_t port,
- void * private_data) {
- // connect
+int AddMatchedRoutesToCache(int num_matched_r, int * matches)
+{
+ cache_entry->num_matched_routes = num_matched_r;
+ int i;
+ for(i = 0; i < num_matched_r; i++) {
+ cache_entry->matches = (int *)V3_Malloc(sizeof(int));
+ *(cache_entry->matches) = matches[i];
+ }
+ if (!insert_some(hash_route, cache_key, cache_entry)) return -1; /*oom*/
+ return 0;
+}
+
+void clear_hash_cache()
+{
+ hashtable_destroy(hash_route, 1, 1); //maybe there are some problems.
+/* hashtable_destroy(hash_route, 1, 1);
+ hash_route = NULL;
+ V3_Free(cache_key);
+ V3_Free(cache_entry);
+ cache_key = NULL;
+ cache_entry = NULL;
+*/
+}
- // setup listener
- V3_CREATE_THREAD(vnet_server, NULL, "VNET Server");
+//int LookIntoCache(char compare_address[HASH_KEY_SIZE], int * do_we_analyze, int * matches) {
+int LookIntoCache(char compare_address[HASH_KEY_SIZE], int * matches)
+{
+ int n_matches = 0;
+ int i;
+ struct hash_value *found;
+ cache_key->key_from_addr = compare_address;
+ if (NULL != (found = search_some(hash_route, cache_key))) {
+ n_matches = found->num_matched_routes;
+ for (i = 0; i < found->num_matched_routes; i++) {
+ //*(matches+i) = *(found->matches+i);
+ matches[i] = found->matches[i];
+ }
+ return n_matches;
+ } else {
+ PrintDebug("VNET: LookIntoCache, hash key not found\n");
return -1;
+ }
+}
+
+
+//------------------hash function end-------------------
+
+char vnet_toupper(char c)
+{
+ if (islower(c))
+ c -= 'a'-'A';
+ return c;
+}
+
+char hexnybbletonybble(const char hexnybble) {
+ char x = vnet_toupper(hexnybble);
+ if ((x >= '0') && (x <= '9')) {
+ return x - '0';
+ } else {
+ return 10 + (x - 'A');
+ }
+}
+
+void hexbytetobyte(const char hexbyte[2], char *byte) {
+ *byte = ((hexnybbletonybble(hexbyte[0]) << 4) +
+ (hexnybbletonybble(hexbyte[1]) & 0xf));
+}
+
+char nybbletohexnybble(const char nybble) {
+ return (nybble >= 10) ? (nybble - 10 + 'A') : (nybble + '0');
+}
+
+void bytetohexbyte(const char byte, char hexbyte[2]) {
+ hexbyte[0] = nybbletohexnybble((byte >> 4) & 0xf);
+ hexbyte[1] = nybbletohexnybble(byte & 0xf);
+}
+
+void string_to_mac(const char * str, char mac[6]) {
+ int k;
+ for(k = 0; k < 6; k++) {
+ hexbytetobyte(&(str[(2 * k) + k]), mac + k);
+ }
+}
+
+void mac_to_string(char address[6], char * buf) {
+ int i;
+ for (i = 0; i < 6; i++) {
+ bytetohexbyte(address[i], &(buf[3 * i]));
+ buf[(3 * i) + 2] = ':';
+ }
+ buf[17] = 0;
+}
+/*
+void ip_to_string(ulong_t addr, char * buf) {
+ struct in_addr addr_st;
+ char * tmp_str;
+
+ addr_st.s_addr = htonl(addr);
+ tmp_str = inet_ntoa(addr_st);
+
+ memcpy(buf, tmp_str, strlen(tmp_str));
+}
+*/
+int find_link_by_fd(SOCK sock) {
+ int i;
+
+ FOREACH_LINK(i, g_links, g_first_link) {
+ if (g_links[i].link_sock == sock) {
+ return i;
+ }
+ }
+
+ return -1;
+}
+
+int if_write_pkt(iface_t *iface, RawEthernetPacket *pkt)
+{
+ iface->input((uchar_t *)pkt->data, pkt->size);
+ return 0;
+}
+
+
+
+//int add_link_entry(unsigned long dest, int type, int link_class, int data_port, int authenticated, SOCK fd) {
+int add_link_entry(unsigned long dest, int type, int data_port, SOCK fd) {
+ int i;
+
+ for(i = 0; i < MAX_LINKS; i++) {
+ if (g_links[i].use == 0) {
+ g_links[i].dest = dest;
+ // g_links[i].authenticated = authenticated;
+ g_links[i].type = type;
+ g_links[i].link_sock = fd;
+ g_links[i].remote_port = data_port;
+ g_links[i].use = 1;
+ // g_links[i].link_class = link_class;
+
+ if (g_first_link == -1)
+ g_first_link = i;
+
+ g_links[i].prev = g_last_link;
+ g_links[i].next = -1;
+
+ if (g_last_link != -1) {
+ g_links[g_last_link].next = i;
+ }
+
+ g_last_link = i;
+
+ g_num_links++;
+ return i;
+ }
+ }
+ return -1;
}
-int v3_send_vnet_pkt(struct v3_vnet * vnet, uchar_t * pkt, uint_t pkt_len) {
+
+
+
+int add_sock(struct sock_list * socks, int len, int * first_sock, int * last_sock, SOCK fd) {
+ int i;
+
+ for (i = 0; i < len; i++) {
+ if (socks[i].sock == -1) {
+ socks[i].sock = fd;
+
+ if (*first_sock == -1)
+ *first_sock = i;
+
+ socks[i].prev = *last_sock;
+ socks[i].next = -1;
+
+ if (*last_sock != -1)
+ socks[*last_sock].next = i;
+
+ *last_sock = i;
+
+ return i;
+ }
+ }
+ return -1;
+}
+
+
+
+
+int add_route_entry(char src_mac[6], char dest_mac[6], int src_mac_qual, int dest_mac_qual, int dest, int type, int src, int src_type) {
+ int i;
+
+ for(i = 0; i < MAX_ROUTES; i++) {
+ if (g_routes[i].use == 0) {
+
+ if ((src_mac_qual != ANY_TYPE) && (src_mac_qual != NONE_TYPE)) {
+ memcpy(g_routes[i].src_mac, src_mac, 6);
+ } else {
+ memset(g_routes[i].src_mac, 0, 6);
+ }
+
+ if ((dest_mac_qual != ANY_TYPE) && (dest_mac_qual != NONE_TYPE)) {
+ memcpy(g_routes[i].dest_mac, dest_mac, 6);
+ } else {
+ memset(g_routes[i].dest_mac, 0, 6);
+ }
+
+ g_routes[i].src_mac_qual = src_mac_qual;
+ g_routes[i].dest_mac_qual = dest_mac_qual;
+ g_routes[i].dest = dest;
+ g_routes[i].type = type;
+ g_routes[i].src = src;
+ g_routes[i].src_type = src_type;
+
+ g_routes[i].use = 1;
+
+ if (g_first_route == -1)
+ g_first_route = i;
+
+ g_routes[i].prev = g_last_route;
+ g_routes[i].next = -1;
+
+ if (g_last_route != -1) {
+ g_routes[g_last_route].next = i;
+ }
+
+ g_last_route = i;
+
+ g_num_routes++;
+ return i;
+ }
+ }
+ return -1;
+}
+
+
+/*
+ * This returns an integer, if the interger is negative then AddLink failed, else it was
+ * successful and returns the socket descriptor
+ */
+
+#if 0
+int AddLink(string input, SOCK * link_sock, string * ret_str) {
+ string output;
+ string hello, password, version, command;
+ string remote_address, type, remote_password;
+ int ctrl_port = 0;
+ int data_port = 0;
+ char buf[128];
+
+ struct hostent * remote_he;
+ struct in_addr dest_addr;
+ unsigned long dest;
+
+ SOCK data_sock;
+ con_t ctrl_con;
+ int link_index;
+ int ret = CTRL_DO_NOTHING;
+
+ struct sockaddr_in local_address;
+ int local_port;
+
+ *link_sock = 0;
+
+ {
+ istringstream is(input,istringstream::in);
+ is >> hello >> password >> version >> command >> remote_address >> ctrl_port >> data_port >> remote_password >> type;
+ }
+
+
+ if ((remote_address.empty()) || (remote_password.empty()) || (type.empty()) || (ctrl_port == 0) || (data_port == 0)) {
+ *ret_str = "Invalid Addlink command";
+ return CTRL_ERROR;
+ }
+
+ if (get_tunnel_type(type) == -1) {
+ *ret_str = "Invalid link type";
+ return CTRL_ERROR;
+ }
+
+ if ((remote_he = gethostbyname(remote_address.c_str())) == NULL) {
+ *ret_str = "Could not lookup address of " + remote_address;
+ return CTRL_ERROR;
+ }
+
+ dest_addr = *((struct in_addr *)remote_he->h_addr);
+ dest = dest_addr.s_addr;
+
+ link_index = find_link_entry(dest, get_tunnel_type(type));
+
+ if (link_index != -1) {
+ JRLDBG("Link already exists\n");
+ *ret_str = "Link already Exists";
+ return CTRL_ERROR;
+ }
+
+
+ if(type == TCP_STR) {
+ struct sockaddr_in serv_addr;
+
+ if ((data_sock = CreateAndSetupTcpSocket()) < 0) {
+ cerr << "the client descriptor could not be opened" << endl;
+ *ret_str = "Could not establish link";
+ return CTRL_ERROR;
+ }
+
+ serv_addr.sin_family = AF_INET;
+ serv_addr.sin_port = htons(data_port);
+ serv_addr.sin_addr = dest_addr;
+ memset(&(serv_addr.sin_zero), 0, 8);
+
+ JRLDBG("Connecting TCP Data link\n");
+ /*we establish a connection with the server */
+ if (connect(data_sock, (struct sockaddr *)&serv_addr, sizeof(serv_addr)) < 0) {
+ cerr << "the connection could not be established : " << endl;
+ *ret_str = "Could not establish link";
+ return CTRL_ERROR;
+ }
+
+
+ local_port = data_port;
+
+ *ret_str = "Successfully added a TCP link to " + remote_address;
+ ret = CTRL_ADD_TCP_SOCK;
+
+ } else if(type == UDP_STR) {
+
+ if (GetLocalSockAddress(g_udp_sockfd, (struct sockaddr *)&local_address) == -1) {
+ JRLDBG("Could not get local address\n");
+ return CTRL_ERROR;
+ }
+ local_port = ntohs(local_address.sin_port);
+
+ data_sock = g_udp_sockfd;
+ *ret_str = "Successfully added a virtual UDP link to " + remote_address;
+
+ }
+
+ *link_sock = data_sock;
+
+ if (create_ctrl_connection(&ctrl_con, remote_address, ctrl_port) == -1) {
+ JRLDBG("Could not establish control connection\n");
+ *ret_str = "Could not register new link";
+ if (type == TCP_STR) {
+ CLOSE_SSL(use_ssl_data, ssl);
+ CLOSE(*link_sock);
+ }
+ return CTRL_ERROR;
+ }
+
+ JRLDBG("ctrl session established\n");
+
+ snprintf(buf, 128, "%s %d", "myself", local_port);
+ output = "REGISTERLINK ";
+ output = output + buf + " " + type;
+
+ if (send_ctrl_msg(ctrl_con, output, remote_password) == -1) {
+ JRLDBG("Could not send the control message\n");
+ *ret_str = "Could not register new link";
+ if (type == TCP_STR) {
+ CLOSE_SSL(use_ssl_data, ssl);
+ CLOSE(*link_sock);
+ }
+ return CTRL_ERROR;
+ }
+
+ JRLDBG("Ctrl message sent\n");
+ if (close_ctrl_connection(ctrl_con, remote_password) == -1) {
+ JRLDBG("Could not close control connection\n");
+ }
+
+ link_index = add_link_entry(dest, get_tunnel_type(type), LINK, data_port, 1, data_sock);
+
+ if (link_index == -1) {
+ *ret_str = "Could not add link entry";
+ if (type == TCP_STR) {
+ CLOSE_SSL(use_ssl_data, ssl);
+ CLOSE(*link_sock);
+ }
+ return CTRL_ERROR;
+ }
+
+ JRLDBG("Addlink Created link: FD=%d\n", g_links[link_index].link_sock);
+
+ return ret;
+}
+
+
+
+int AddRoute(string input, string * ret_str) {
+ int src_mac_qual;
+ int dest_mac_qual;
+
+ int dest;
+ int src;
+
+ int route_index;
+
+ int route_type;
+ int src_route_type;
+
+ char src_mac[6];
+ char dest_mac[6];
+
+ string hello, version, password, command;
+ string src_str, dest_str, src_mac_str, dest_mac_str, src_type, type;
+
+
+ {
+ istringstream is(input,istringstream::in);
+ is >> hello >> password >> version >> command >> src_mac_str >> dest_mac_str >> type >> dest_str >> src_type >> src_str;
+ }
+
+ if ((src_mac_str.empty()) || (dest_mac_str.empty()) ||
+ (dest_str.empty()) || (type.empty())) {
+ *ret_str = "Invalid AddRoute command";
+ return CTRL_ERROR;
+ }
+
+
+ if (get_route_type(type) == -1) {
+ *ret_str = "Invalid route type";
+ return CTRL_ERROR;
+ }
+
+
+ if (!(src_type.empty()) && (get_route_src_type(src_type) == -1)) {
+ *ret_str = "Invalid route source type";
+ return CTRL_ERROR;
+ }
+
+
+ //We will first do some parsing to obtain correct the qualifier for source and destination address
+ if (src_mac_str.find(":",0) == string::npos) {
+ src_mac_qual = get_qual_type(src_mac_str);
+
+ if (src_mac_qual == -1) {
+ *ret_str = "Invalid Qual Type";
+ return CTRL_ERROR;
+ }
+
+ memset(src_mac, 0, 6);
+ } else {
+ if(src_mac_str.substr(0,3) == NOT) {
+ src_mac_qual = NOT_TYPE;
+ src_mac_str = src_mac_str.substr(4);
+ } else {
+ src_mac_qual = EMPTY_TYPE;
+ }
+
+ src_mac_str = src_mac_str.substr(0,2) + src_mac_str.substr(3,2) + src_mac_str.substr(6,2) + src_mac_str.substr(9,2) + src_mac_str.substr(12,2) + src_mac_str.substr(15,2);
+
+ ConvertHexEthernetAddressToBinary(src_mac_str.c_str(), src_mac);
+ }
+
+
+ if (dest_mac_str.find (":",0) == string::npos) {
+ dest_mac_qual = get_qual_type(dest_mac_str);
+
+ if (dest_mac_qual == -1) {
+ ret_str->assign("Invalid Qual Type");
+ return CTRL_ERROR;
+ }
+
+ memset(dest_mac, 0, 6);
+ } else {
+ if(dest_mac_str.substr(0,3) == NOT) {
+ dest_mac_qual = NOT_TYPE;
+ dest_mac_str = dest_mac_str.substr(4);
+ } else {
+ dest_mac_qual = EMPTY_TYPE;
+ }
+
+ dest_mac_str = dest_mac_str.substr(0,2) + dest_mac_str.substr(3,2) + dest_mac_str.substr(6,2) + dest_mac_str.substr(9,2) + dest_mac_str.substr(12,2) + dest_mac_str.substr(15,2);
+
+ ConvertHexEthernetAddressToBinary(dest_mac_str.c_str(), dest_mac);
+ }
+
+ if (type == INTERFACE) {
+ int dest_dev;
+
+ dest_dev = get_device(dest_str);
+
+ if (dest_dev == -1) {
+ ret_str->assign("Could not find Destination Interface");
+ return CTRL_ERROR;
+ }
+
+ dest = dest_dev;
+
+ route_type = INTERFACE_TYPE;
+ } else if (type == EDGE) {
+ hostent * remote_he;
+
+ if ((remote_he = gethostbyname(dest_str.c_str())) == NULL) {
+ ret_str->assign("Could not lookup address for " + dest_str);
+ return CTRL_ERROR;
+ }
+
+ dest = find_link_entry((*((struct in_addr *)remote_he->h_addr)).s_addr, -1);
+ if (dest == -1) {
+ JRLDBG("AddRoute: Invalid Destination: %s\n", inet_ntoa((*((struct in_addr *)remote_he->h_addr))));
+ ret_str->assign("Addroute requested for invalid destination");
+ return CTRL_ERROR;
+ }
+
+ route_type = EDGE_TYPE;
+ }
+
+
+ if (src_type.empty() || (src_type == ANY_SRC)) {
+ src = -1;
+ src_route_type = ANY_SRC_TYPE;
+ } else if (src_type == INTERFACE) {
+
+ if (src_str.empty()) {
+ ret_str->assign("Missing Source INTERFACE");
+ return CTRL_ERROR;
+ }
+
+ if (src_str == ANY_SRC) {
+ src = -1;
+ } else {
+ int src_dev;
+ src_dev = get_device(src_str);
+
+ if (src_dev == -1) {
+ ret_str->assign("Could not find Source Interface");
+ return CTRL_ERROR;
+ }
+
+ src = src_dev;
+ }
+ src_route_type = INTERFACE_TYPE;
+
+ } else if (src_type == EDGE) {
+
+ if (src_str == ANY_SRC) {
+ src = -1;
+ } else {
+ hostent * src_he;
+
+ if (src_str.empty()) {
+ ret_str->assign("Missing Source EDGE Address");
+ return CTRL_ERROR;
+ }
+
+ if ((src_he = gethostbyname(src_str.c_str())) == NULL) {
+ ret_str->assign("Could not lookup address for " + src_str);
+ return CTRL_ERROR;
+ }
+
+ src = find_link_entry((*((struct in_addr *)src_he->h_addr)).s_addr, -1);
+
+ if (src == -1) {
+ JRLDBG("AddRoute: Invalid Destination: %s\n", inet_ntoa((*((struct in_addr *)src_he->h_addr))));
+ ret_str->assign("Addroute requested for invalid destination");
+ return CTRL_ERROR;
+ }
+ }
+
+ src_route_type = EDGE_TYPE;
+
+ }
+
+
+ JRLDBG("Route Def: %d:%d:%d:%d:%d:%d %d:%d:%d:%d:%d:%d src_qual=%d, dest_qual=%d, dest=%d, type=%d src=%d, src_type=%d\n", src_mac[0], src_mac[1], src_mac[2], src_mac[3], src_mac[4], src_mac[5], dest_mac[0], dest_mac[1], dest_mac[2], dest_mac[3], dest_mac[4], dest_mac[5], src_mac_qual, dest_mac_qual, dest, route_type, src, src_route_type);
+
+ route_index = find_route_entry(src_mac, dest_mac, src_mac_qual, dest_mac_qual, dest, route_type, src, src_route_type);
+
+ if (route_index != -1) {
+ JRLDBG("Route Already Exists, Index: %d\n", route_index);
+ ret_str->assign("Route alredy Exists");
+ return CTRL_ERROR;
+ }
+
+ route_index = add_route_entry(src_mac, dest_mac, src_mac_qual, dest_mac_qual, dest, get_route_type(type), src, src_route_type);
+ if (route_index >= 0) {
+ ret_str->assign("Successfully added the route for " +src_mac_str+ " and "+dest_mac_str);
+ } else {
+ ret_str->assign("Could not add route for " + src_mac_str + " and " + dest_mac_str);
+ return CTRL_ERROR;
+ }
+
+ return route_index;
+}
+
+#endif
+
+int add_device_to_table(char *device_name, int type) {
+ int i;
+
+ for (i = 0; i < MAX_DEVICES; i++) {
+ if (g_devices[i].use == 0) {
+ // g_devices[i].device_name = device_name;
+ strcpy(g_devices[i].device_name, device_name);
+ g_devices[i].type = type;
+ g_devices[i].use = 1;
+
+ if (g_first_device == -1)
+ g_first_device = i;
+
+ g_devices[i].prev = g_last_device;
+ g_devices[i].next = -1;
+
+ if (g_last_device != -1)
+ g_devices[g_last_device].next = i;
+
+ g_last_device = i;
+
+ g_num_devices++;
+ return i;
+ }
+ }
+ return -1;
+}
+
+
+int find_link_entry(unsigned long dest, int type) {
+ int i;
+
+ // PringDebug("Src: %lu, Dst: %lu\n", src, dest);
+
+ FOREACH_LINK(i, g_links, g_first_link) {
+ if ( (g_links[i].dest == dest) &&
+ ((type == -1) || (g_links[i].type == type)) ) {
+ return i;
+ }
+ }
+
+ return -1;
+}
+
+int delete_link_entry(int index) {
+ int next_i;
+ int prev_i;
+
+ if (g_links[index].use == 0) {
+ return -1;
+ }
+
+ g_links[index].dest = 0;
+// g_links[index].authenticated = 0;
+ g_links[index].type = 0;
+ g_links[index].link_sock = -1;
+ g_links[index].use = 0;
+
+ prev_i = g_links[index].prev;
+ next_i = g_links[index].next;
+
+ if (prev_i != -1)
+ g_links[prev_i].next = g_links[index].next;
+
+
+ if (next_i != -1)
+ g_links[next_i].prev = g_links[index].prev;
+
+ if (g_first_link == index)
+ g_first_link = g_links[index].next;
+
+ if (g_last_link == index)
+ g_last_link = g_links[index].prev;
+
+ g_links[index].next = -1;
+ g_links[index].prev = -1;
+
+ g_num_links--;
+
+ return 0;
+}
+
+int delete_link_entry_by_addr(unsigned long dest, int type) {
+ int index = find_link_entry(dest, type);
+
+ if (index == -1) {
return -1;
+ }
+
+ return delete_link_entry(index);
}
+
+#if 0
+int delete_device(string device_name) {
+ int index = get_device(device_name);
+
+ if (index == -1) {
+ return -1;
+ }
+
+ delete_device(index);
+
+ return 0;
+}
+
+#endif
+
+int delete_device(int index) {
+ int next_i;
+ int prev_i;
+
+ g_devices[index].device_name = "";
+ g_devices[index].use = 0;
+
+
+ prev_i = g_devices[index].prev;
+ next_i = g_devices[index].next;
+
+ if (prev_i != -1)
+ g_devices[prev_i].next = g_devices[index].next;
+
+
+ if (next_i != -1)
+ g_devices[next_i].prev = g_devices[index].prev;
+
+ if (g_first_device == index)
+ g_first_device = g_devices[index].next;
+
+ if (g_last_device == index)
+ g_last_device = g_devices[index].prev;
+
+ g_devices[index].next = -1;
+ g_devices[index].prev = -1;
+
+ g_num_devices--;
+
+ return 0;
+}
+
+int find_route_entry(char src_mac[6], char dest_mac[6], int src_mac_qual, int dest_mac_qual, int dest, int type, int src, int src_type) {
+ int i;
+ char temp_src_mac[6];
+ char temp_dest_mac[6];
+
+ if ((src_mac_qual != ANY_TYPE) && (src_mac_qual != NONE_TYPE)) {
+ memcpy(temp_src_mac, src_mac, 6);
+ } else {
+ memset(temp_src_mac, 0, 6);
+ }
+
+ if ((dest_mac_qual != ANY_TYPE) && (dest_mac_qual != NONE_TYPE)) {
+ memcpy(temp_dest_mac, dest_mac, 6);
+ } else {
+ memset(temp_dest_mac, 0, 6);
+ }
+
+ FOREACH_LINK(i, g_routes, g_first_route) {
+ if ( (memcmp(temp_src_mac, g_routes[i].src_mac, 6) == 0) &&
+ (memcmp(temp_dest_mac, g_routes[i].dest_mac, 6) == 0) &&
+ (g_routes[i].src_mac_qual == src_mac_qual) &&
+ (g_routes[i].dest_mac_qual == dest_mac_qual) &&
+ ( (type == -1) ||
+ ((type == g_routes[i].type) && (g_routes[i].dest == dest))) &&
+ ( (src_type == -1) ||
+ ((src_type == g_routes[i].src_type) && (g_routes[i].src == src))) ) {
+ return i;
+ }
+ }
+
+ return -1;
+}
+
+int delete_route_entry(int index) {
+
+ int next_i;
+ int prev_i;
+
+ memset(g_routes[index].src_mac, 0, 6);
+ memset(g_routes[index].dest_mac, 0, 6);
+
+ g_routes[index].dest = 0;
+ g_routes[index].src = 0;
+ g_routes[index].src_mac_qual = 0;
+ g_routes[index].dest_mac_qual = 0;
+ g_routes[index].type = -1;
+ g_routes[index].src_type = -1;
+ g_routes[index].use = 0;
+
+
+ prev_i = g_routes[index].prev;
+ next_i = g_routes[index].next;
+
+ if (prev_i != -1)
+ g_routes[prev_i].next = g_routes[index].next;
+
+
+ if (next_i != -1)
+ g_routes[next_i].prev = g_routes[index].prev;
+
+ if (g_first_route == index)
+ g_first_route = g_routes[index].next;
+
+ if (g_last_route == index)
+ g_last_route = g_routes[index].prev;
+
+ g_routes[index].next = -1;
+ g_routes[index].prev = -1;
+
+ g_num_routes--;
+
+ return 0;
+}
+
+int delete_route_entry_by_addr(char src_mac[6], char dest_mac[6], int src_mac_qual, int dest_mac_qual, int dest, int type, int src, int src_type) {
+ int index = find_route_entry(src_mac, dest_mac, src_mac_qual, dest_mac_qual, dest, type, src, src_type);
+
+ if (index == -1) {
+ return -1;
+ }
+
+ delete_route_entry(index);
+
+ return 0;
+}
+
+
+#if 0
+int DeleteLink(string input, SOCK * link_sock, string * ret_str) {
+ string output;
+ string hello,password, version, command;
+ string remote_address, type, remote_password;
+ int ctrl_port = 0;
+
+ struct hostent * remote_he;
+ unsigned long dest_addr;
+
+ int link_index;
+ int ret = CTRL_DO_NOTHING;
+
+ con_t ctrl_con;
+ struct sockaddr_in local_address;
+ char buf[128];
+
+ *link_sock = 0;
+
+ {
+ istringstream is(input,istringstream::in);
+ is >> hello >> password >> version >> command >> remote_address >> ctrl_port >> remote_password >> type ;
+ }
+
+ if ((remote_address.empty()) || (remote_password.empty()) ||
+ (type.empty()) || (ctrl_port == 0)) {
+ *ret_str = "Invalid Deletelink command";
+ return CTRL_ERROR;
+ }
+
+ if (get_tunnel_type(type) == -1) {
+ *ret_str = "Invalid link type";
+ return CTRL_ERROR;
+ }
+
+ if ((remote_he = gethostbyname(remote_address.c_str())) == NULL) {
+ *ret_str = "could not lookup address of " + remote_address;
+ return CTRL_ERROR;
+ }
+
+ dest_addr = (*((struct in_addr *)remote_he->h_addr)).s_addr;
+
+ JRLDBG("Deleting Dst: %lu\n", dest_addr);
+
+ link_index = find_link_entry(dest_addr, get_tunnel_type(type));
+
+
+ if (link_index == -1) {
+
+ JRLDBG("Link Does Not Exist\n");
+ *ret_str = "Link Does not exist";
+ return CTRL_ERROR;
+ }
+
+ if (type == TCP_STR) {
+ *link_sock = g_links[link_index].link_sock;
+ *ret_str = "Successfully deleted a TCP link to " + remote_address;
+ ret = CTRL_DELETE_TCP_SOCK;
+
+ } else if (type == UDP_STR) {
+ *ret_str = "Successfully deleted a virtual UDP link to " + remote_address;
+ } else if (type == VTP_STR) {
+ *ret_str = "Successfully deleted a VTP link to " + remote_address;
+ // TODO: Send delete control message
+ }
+
+
+
+ if (create_ctrl_connection(&ctrl_con, remote_address, ctrl_port) == -1) {
+ JRLDBG("Could not establish control connection\n");
+ *ret_str = "Could not deregister link";
+ CLOSE(*link_sock);
+ return CTRL_ERROR;
+ }
+
+
+ /*
+ if (GetLocalSockAddress(ctrl_con.sock, (struct sockaddr *)&local_address) == -1) {
+ JRLDBG("Could not get local address\n");
+ *ret_str = "Could not deregister link";
+ CLOSE(*link_sock);
+ return CTRL_ERROR;
+ }
+
+ snprintf(buf, 128, "%s", inet_ntoa(local_address.sin_addr));
+ */
+ output = "DEREGISTERLINK ";
+ output = output + "myself" + " " + type;
+
+ if (send_ctrl_msg(ctrl_con, output, remote_password) == -1) {
+ // Could not register on the remote host,
+ CLOSE(*link_sock);
+ *ret_str = "Could not deregister link on remote host";
+ return CTRL_ERROR;
+ }
+
+ if (close_ctrl_connection(ctrl_con, remote_password) == -1) {
+ JRLDBG("Could not close control connection\n");
+ }
+
+ if (close_link(link_index) == -1) {
+ *ret_str = "Could not delete link";
+ return CTRL_ERROR;
+ }
+
+ return ret;
+}
+
+
+int DeleteRoute(string input, string * ret_str) {
+ int src_mac_qual;
+ int dest_mac_qual;
+
+ int dest;
+ int src;
+
+ int ret = 0;
+ char src_mac[6];
+ char dest_mac[6];
+
+ int route_type;
+ int src_route_type;
+
+ string hello, version, password, command;
+ string src_str, dest_str, src_mac_str, dest_mac_str, type, src_type;
+
+ {
+ istringstream is(input,istringstream::in);
+ is >> hello >> password >> version >> command >> src_mac_str >> dest_mac_str >> type >> dest_str >> src_type >> src_str ;
+ }
+
+ if ((src_mac_str.empty()) || (dest_mac_str.empty()) ||
+ (dest_str.empty()) || (type.empty())) {
+ ret_str->assign("Invalid Deleteroute command");
+ return CTRL_ERROR;
+ }
+
+
+ if (get_route_type(type) == -1) {
+ ret_str->assign("Invalid route type");
+ return CTRL_ERROR;
+ }
+
+ if (!(src_type.empty()) && (get_route_src_type(src_type) == -1)) {
+ ret_str->assign("Invalid route source type");
+ return CTRL_ERROR;
+ }
+
+ //We will first do some parsing to obtain correct the qualifier for source and destination address
+ if (src_mac_str.find(":",0) == string::npos) {
+ src_mac_qual = get_qual_type(src_mac_str);
+
+ if (src_mac_qual == -1) {
+ ret_str->assign("Invalid qual type");
+ return CTRL_ERROR;
+ }
+
+ memset(src_mac, 0, 6);
+ } else {
+ if(src_mac_str.substr(0,3) == NOT) {
+ src_mac_qual = NOT_TYPE;
+ src_mac_str = src_mac_str.substr(4);
+ } else {
+ src_mac_qual = EMPTY_TYPE;
+ }
+
+ src_mac_str = src_mac_str.substr(0,2) + src_mac_str.substr(3,2) + src_mac_str.substr(6,2) + src_mac_str.substr(9,2) + src_mac_str.substr(12,2) + src_mac_str.substr(15,2);
+
+ ConvertHexEthernetAddressToBinary(src_mac_str.c_str(), src_mac);
+ }
+
+
+ if (dest_mac_str.find (":",0) == string::npos) {
+ dest_mac_qual = get_qual_type(dest_mac_str);
+
+ if (dest_mac_qual == -1) {
+ ret_str->assign("Invalid Qual Type");
+ return CTRL_ERROR;
+ }
+
+ memset(dest_mac, 0, 6);
+ } else {
+ if(dest_mac_str.substr(0,3) == NOT) {
+ dest_mac_qual = NOT_TYPE;
+ dest_mac_str = dest_mac_str.substr(4);
+ } else {
+ dest_mac_qual = EMPTY_TYPE;
+ }
+
+ dest_mac_str = dest_mac_str.substr(0,2) + dest_mac_str.substr(3,2) + dest_mac_str.substr(6,2) + dest_mac_str.substr(9,2) + dest_mac_str.substr(12,2) + dest_mac_str.substr(15,2);
+
+ ConvertHexEthernetAddressToBinary(dest_mac_str.c_str(), dest_mac);
+ }
+
+ if (type == INTERFACE) {
+ int dest_dev;
+
+ dest_dev = get_device(dest_str);
+
+ if (dest_dev == -1) {
+ ret_str->assign("Could not find Destination Interface");
+ return CTRL_ERROR;
+ }
+
+ dest = dest_dev;
+
+ route_type = INTERFACE_TYPE;
+ } else if (type == EDGE) {
+ hostent * remote_he;
+
+ if ((remote_he = gethostbyname(dest_str.c_str())) == NULL) {
+ ret_str->assign("Could not lookup address for " + dest_str);
+ return CTRL_ERROR;
+ }
+
+ dest = find_link_entry((*((struct in_addr *)remote_he->h_addr)).s_addr, -1);
+ if (dest == -1) {
+ ret_str->assign("Route requested for invalid destination");
+ return CTRL_ERROR;
+ }
+
+ route_type = EDGE_TYPE;
+ }
+
+
+ if (src_type.empty() || (src_type == ANY_SRC)) {
+ src = -1;
+ src_route_type = ANY_SRC_TYPE;
+ } else if (src_type == INTERFACE) {
+
+ if (src_str.empty()) {
+ ret_str->assign("Missing Source INTERFACE");
+ return CTRL_ERROR;
+ }
+ if (src_str == ANY_SRC) {
+ src = -1;
+ } else {
+ int src_dev;
+ src_dev = get_device(src_str);
+
+ if (src_dev == -1) {
+ ret_str->assign("Could not find Source Interface");
+ return CTRL_ERROR;
+ }
+
+ src = src_dev;
+ }
+ src_route_type = INTERFACE_TYPE;
+
+ } else if (src_type == EDGE) {
+
+ if (src_str.empty()) {
+ ret_str->assign("Missing Source EDGE Address");
+ return CTRL_ERROR;
+ }
+
+ if (src_str == ANY_SRC) {
+ src = -1;
+ } else {
+ hostent * src_he;
+
+ if ((src_he = gethostbyname(src_str.c_str())) == NULL) {
+ ret_str->assign("Could not lookup address for " + src_str);
+ return CTRL_ERROR;
+ }
+
+ src = find_link_entry((*((struct in_addr *)src_he->h_addr)).s_addr, -1);
+
+ if (src == -1) {
+ JRLDBG("DeleteRoute: Invalid Destination: %s\n", inet_ntoa((*((struct in_addr *)src_he->h_addr))));
+ ret_str->assign("DeleteToute requested for invalid destination");
+ return CTRL_ERROR;
+ }
+ }
+ src_route_type = EDGE_TYPE;
+ }
+
+ ret = delete_route_entry(src_mac, dest_mac, src_mac_qual, dest_mac_qual, dest, route_type, src, src_route_type);
+
+ if (ret == 0) {
+ ret_str->assign("Successfully deleted the route for " +src_mac_str+ " and "+dest_mac_str);
+ } else {
+ ret_str->assign("Could not delete the route");
+ return CTRL_ERROR;
+ }
+
+ return ret;
+}
+#endif
+
+int delete_sock(struct sock_list * socks, int *first_sock, int *last_sock, SOCK fd) {
+ int i;
+ int prev_i;
+ int next_i;
+
+
+ FOREACH_SOCK(i, socks, (*first_sock)) {
+ if (socks[i].sock == fd) {
+ V3_Close_Socket(socks[i].sock);
+ socks[i].sock = -1;
+
+ prev_i = socks[i].prev;
+ next_i = socks[i].next;
+
+ if (prev_i != -1)
+ socks[prev_i].next = socks[i].next;
+
+ if (next_i != -1)
+ socks[next_i].prev = socks[i].prev;
+
+ if (*first_sock == i)
+ *first_sock = socks[i].next;
+
+ if (*last_sock == i)
+ *last_sock = socks[i].prev;
+
+ socks[i].next = -1;
+ socks[i].prev = -1;
+
+ return 0;
+ }
+ }
+ return -1;
+}
+
+/*
+//During testing, route table, link table, etc. are writen in program, isteadjing of AddRoute(), AddLink()...
+void Create_topologies()
+{
+ //create link table
+ unsigned long dest; // dest_addr = *((struct in_addr *)remote_he->h_addr); dest = dest_addr.s_addr;
+ add_link_entry(dest, TCP_STR, int data_port, SOCK fd) //the parameter need modify
+
+ //create device table
+
+ add_device_to_table(eth0)
+
+ //create route table
+ //example(VnetClientJava):FORWARD endeavor.cs.northwestern.edu EDGE not-00:0C:29:0F:4E:AA 00:0C:29:0F:4E:AA virtuoso-22.cs.northwestern.edu ANY ANY
+ //format(VnetClientJava): String routeStr = "FORWARD " + host.getHostname() + " " + dstType + " " + srcMacStr + " " + dstMacStr + " " + dst + " " + srcType + " " + src;
+ char src_mac[6]; //={}; //00:0C:29:0F:4E:AA
+ char dest_mac[6]; //00:0C:29:0F:4E:AA, empty type is only a mac adress.
+ add_route_entry(src_mac, dest_mac, NOT_TYPE, EMPTY_TYPE, , EDGE, ANY, ANY); //decide "dest" after creade device table or link table.
+}
+
+*/
+
+
+//int data_port, is udp/tcp port. SOCK fd comes from socket() function.. so this function is called after socket().
+void store_topologies(int data_port, SOCK fd)
+{
+ int i;
+ int src_mac_qual = ANY_TYPE;
+ int dest_mac_qual = ANY_TYPE;
+ int dest =0; //this is in_addr.s_addr
+ int type = UDP_TYPE;
+ int src = 0;
+ int src_type= ANY_SRC_TYPE;
+
+ //store link table
+ for(i = 0; i < 1; i++) {
+ if (g_links[i].use == 0) {
+ g_links[i].dest = dest;
+ // g_links[i].authenticated = authenticated;
+ g_links[i].type = type;
+ g_links[i].link_sock = fd;
+ g_links[i].remote_port = data_port;
+ g_links[i].use = 1;
+ // g_links[i].link_class = link_class;
+
+ if (g_first_link == -1)
+ g_first_link = i;
+
+ g_links[i].prev = g_last_link;
+ g_links[i].next = -1;
+
+ if (g_last_link != -1) {
+ g_links[g_last_link].next = i;
+ }
+
+ g_last_link = i;
+
+ g_num_links++;
+ }
+ }
+ //store route table
+
+ type = EDGE_TYPE;
+ dest =0;
+
+ for(i = 0; i < 1; i++) {
+ if (g_routes[i].use == 0) {
+
+ if ((src_mac_qual != ANY_TYPE) && (src_mac_qual != NONE_TYPE)) {
+ // memcpy(g_routes[i].src_mac, src_mac, 6);
+ } else {
+ memset(g_routes[i].src_mac, 0, 6);
+ }
+
+ if ((dest_mac_qual != ANY_TYPE) && (dest_mac_qual != NONE_TYPE)) {
+ // memcpy(g_routes[i].dest_mac, dest_mac, 6);
+ } else {
+ memset(g_routes[i].dest_mac, 0, 6);
+ }
+
+ g_routes[i].src_mac_qual = src_mac_qual;
+ g_routes[i].dest_mac_qual = dest_mac_qual;
+ g_routes[i].dest = dest;
+ g_routes[i].type = type;
+ g_routes[i].src = src;
+ g_routes[i].src_type = src_type;
+
+ g_routes[i].use = 1;
+
+ if (g_first_route == -1)
+ g_first_route = i;
+
+ g_routes[i].prev = g_last_route;
+ g_routes[i].next = -1;
+
+ if (g_last_route != -1) {
+ g_routes[g_last_route].next = i;
+ }
+
+ g_last_route = i;
+
+ g_num_routes++;
+
+ }
+ }
+}
+
+//int MatchRoute(char * src_mac, char * dst_mac, int src_type, int src_index, int * do_we_analyze, int * matches) {
+int MatchRoute(char * src_mac, char * dst_mac, int src_type, int src_index, int * matches) {
+
+ int values[g_num_routes];
+ int matched_routes[g_num_routes];
+
+ int num_matches = 0;
+ int i;
+ int max = 0;
+ int no = 0;
+ int exact_match = 0;
+
+
+
+ FOREACH_ROUTE(i, g_routes, g_first_route) {
+ if ( (g_routes[i].src_type != ANY_SRC_TYPE) &&
+ ( (g_routes[i].src_type != src_type) ||
+ ( (g_routes[i].src != src_index) &&
+ (g_routes[i].src != -1) ) ) ) {
+ PrintDebug("Source route is on and does not match\n");
+ continue;
+ }
+
+ if ( (g_routes[i].dest_mac_qual == ANY_TYPE) &&
+ (g_routes[i].src_mac_qual == ANY_TYPE) ) {
+
+ matched_routes[num_matches] = i;
+ values[num_matches] = 3;
+
+ num_matches++;
+ }
+
+ if (memcmp((void *)&g_routes[i].src_mac, (void *)src_mac, 6) == 0) {
+ if (g_routes[i].src_mac_qual != NOT_TYPE) {
+ if (g_routes[i].dest_mac_qual == ANY_TYPE) {
+
+ matched_routes[num_matches] = i;
+ values[num_matches] = 6;
+
+ num_matches++;
+ } else if (memcmp((void *)&g_routes[i].dest_mac, (void *)dst_mac, 6) == 0) {
+ if (g_routes[i].dest_mac_qual != NOT_TYPE) {
+
+ matched_routes[num_matches] = i;
+ values[num_matches] = 8;
+
+ exact_match = 1;
+
+ num_matches++;
+ }
+ }
+ }
+ }
+
+ if (memcmp((void *)&g_routes[i].dest_mac, (void *)dst_mac, 6) == 0) {
+ if (g_routes[i].dest_mac_qual != NOT_TYPE) {
+ if (g_routes[i].src_mac_qual == ANY_TYPE) {
+
+ matched_routes[num_matches] = i;
+ values[num_matches] = 6;
+
+ num_matches++;
+ } else if (memcmp((void *)&g_routes[i].src_mac, (void *)src_mac, 6) == 0) {
+ if (g_routes[i].src_mac_qual != NOT_TYPE) {
+
+ if (exact_match == 0) {
+ matched_routes[num_matches] = i;
+ values[num_matches] = 8;
+
+ num_matches++;
+ }
+ }
+ }
+ }
+ }
+
+ if ( (g_routes[i].dest_mac_qual == NOT_TYPE) &&
+ (memcmp((void *)&g_routes[i].dest_mac, (void *)dst_mac, 6) != 0)) {
+ if (g_routes[i].src_mac_qual == ANY_TYPE) {
+
+ matched_routes[num_matches] = i;
+ values[num_matches] = 5;
+
+ num_matches++;
+ } else if (memcmp((void *)&g_routes[i].src_mac, (void *)src_mac, 6) == 0) {
+ if (g_routes[i].src_mac_qual != NOT_TYPE) {
+
+ matched_routes[num_matches] = i;
+ values[num_matches] = 7;
+
+ num_matches++;
+ }
+ }
+ }
+
+ if ( (g_routes[i].src_mac_qual == NOT_TYPE) &&
+ (memcmp((void *)&g_routes[i].src_mac, (void *)src_mac, 6) != 0) ) {
+ if (g_routes[i].dest_mac_qual == ANY_TYPE) {
+
+ matched_routes[num_matches] = i;
+ values[num_matches] = 5;
+
+ num_matches++;
+ } else if (memcmp((void *)&g_routes[i].dest_mac, (void *)dst_mac, 6) == 0) {
+ if (g_routes[i].dest_mac_qual != NOT_TYPE) {
+
+ matched_routes[num_matches] = i;
+ values[num_matches] = 7;
+
+ num_matches++;
+ }
+ }
+ }
+ }
+
+
+
+ FOREACH_ROUTE(i, g_routes, g_first_route) {
+ if ( (memcmp((void *)&g_routes[i].src_mac, (void *)src_mac, 6) == 0) &&
+ (g_routes[i].dest_mac_qual == NONE_TYPE) &&
+ ( (g_routes[i].src_type == ANY_SRC_TYPE) ||
+ ( (g_routes[i].src_type == src_type) &&
+ ( (g_routes[i].src == src_index) ||
+ (g_routes[i].src == -1) )))) {
+
+ matched_routes[num_matches] = i;
+ values[num_matches] = 4;
+ PrintDebug("We matched a default route (%d)\n", i);
+ num_matches++;
+ }
+ }
+
+ //If many rules have been matched, we choose one which has the highest value rating
+ if (num_matches == 0) {
+ return 0;
+ }
+
+ for (i = 0; i < num_matches; i++) {
+ if (values[i] > max) {
+ no = 0;
+
+ max = values[i];
+ matches[no] = matched_routes[i];
+
+ no++;
+ } else if (values[i] == max) {
+ matches[no] = matched_routes[i];
+
+ no++;
+ }
+ }
+
+ return no;
+}
+
+bool HandleDataOverLink(RawEthernetPacket *pkt, int src_link_index)
+{
+
+ char src_mac[6];
+ char dst_mac[6];
+// int do_we_analyze;
+
+ int matches[g_num_routes];
+
+ int num_matched_routes = 0;
+ int i;
+ struct HEADERS headers;
+// char hash_key[HASH_KEY_SIZE];
+
+ // get the ethernet and ip headers from the packet
+ memcpy((void *)&headers, (void *)pkt->data, sizeof(headers));
+ int j;
+ for(j = 0;j < 6; j++) {
+ src_mac[j] = headers.ethernetsrc[j];
+ dst_mac[j] = headers.ethernetdest[j];
+ }
+
+
+//#ifdef DEBUG
+ char dest_str[18];
+ char src_str[18];
+
+ mac_to_string(src_mac, src_str);
+ mac_to_string(dst_mac, dest_str);
+
+ PrintDebug("SRC(%s), DEST(%s)\n", src_str, dest_str);
+//#endif
+
+// make_hash_key(hash_key, src_mac, dst_mac, EDGE_TYPE, src_link_index);
+
+
+ // num_matched_routes = MatchRoute(src_mac, dst_mac, EDGE_TYPE, src_link_index, &do_we_analyze, matches);
+ num_matched_routes = MatchRoute(src_mac, dst_mac, EDGE_TYPE, src_link_index, matches);
+
+ PrintDebug("Matches=%d\n", num_matched_routes);
+
+ for (i = 0; i < num_matched_routes; i++) {
+ int route_index = -1;
+ int link_index = -1;
+ int dev_index = -1;
+
+ route_index = matches[i];
+
+#ifdef DEBUG
+ {
+ // char *route_str;
+ PrintDebug("Forward packet from link according to Route entry %d\n", route_index);
+ // route_to_str(route_index, &route_str);
+ // PrintDebug("Route Rule: %s\n", route_str.c_str());
+ }
+#endif
+
+ if (g_routes[route_index].type == EDGE_TYPE) {
+
+ link_index = g_routes[route_index].dest;
+
+ // PrintDebug("Destination Host: %s\n", ip_to_string(htonl(g_links[link_index].dest)));
+
+ if(g_links[link_index].type == UDP_TYPE) {
+
+ int size;
+ PrintDebug("Serializing UDP Packet from LINK, fd=%d\n", g_links[link_index].link_sock);
+
+ if ((size = V3_SendTo_IP(g_links[link_index].link_sock, g_links[link_index].dest, g_links[link_index].remote_port, pkt->data, pkt->size)) != pkt->size) {
+ PrintError("Vnet: sending by UDP Exception, %x\n", size);
+ return false;
+ }
+
+ } else if (g_links[link_index].type == TCP_TYPE) {
+ // PrintDebug("Serializing TCP Packet from link to LINk %s\n", ip_to_string(htonl(g_links[link_index].dest)));
+ RawEthernetPacketSerialize(pkt, g_links[link_index].link_sock);
+ }
+ } else if (g_routes[route_index].type == INTERFACE_TYPE) {
+ dev_index = g_routes[route_index].dest;
+
+ PrintDebug("Writing Packet to device=%s\n", g_devices[dev_index].device_name);
+
+ if (if_write_pkt(g_devices[dev_index].vnet_device, pkt) == -1) {
+ PrintDebug("Can't write output packet to link\n");
+ return false;
+ }
+ }
+ }
+ return true;
+}
+
+
+
+
+#endif //Route
+
+
+static void hanlder_ProcessTcp(struct handler *hd)
+{
+ RawEthernetPacket *pt;
+
+ pt = (RawEthernetPacket *)V3_Malloc(sizeof(RawEthernetPacket));
+ if (pt == NULL){
+ PrintError("Vnet: Malloc fails\n");
+ return;
+ }
+
+ if (RawEthernetPacketUnserialize(pt, hd->fd) == false){
+ PrintError("Vnet: Hanlder:ProcessTcp: receiving packet from TCP fails\n");
+ return;
+ }
+
+ PrintDebug("Vnet: In Hanlder.ProcessTcp: get packet\n");
+ print_packet(pt->data, pt->size);
+#ifdef ROUTE
+/* int *link_index ;
+ link_index = (int *)V3_Malloc(sizeof(int));
+ if (link_index == NULL){
+ PrintError("Vnet: Malloc fails\n");
+ return;
+ }
+
+ *link_index = find_link_by_fd(hd->fd);
+*/
+ int link_index;
+// int *link_index_ptr;
+ link_index = find_link_by_fd(hd->fd);
+// link_index_ptr = &link_index;
+// v3_enqueue(src_link_index_q, (addr_t)link_index_ptr);
+ pt->index = link_index;
+#endif
+ v3_enqueue(vnet_inpkt_q, (addr_t)pt);
+}
+
+static void RunUdp(struct handler *hd)
+{
+ RawEthernetPacket *pt;
+
+ while (1) {
+ pt = (RawEthernetPacket *)V3_Malloc(sizeof(RawEthernetPacket));
+ if (pt == NULL){
+ PrintError("Vnet: Malloc fails\n");
+ return;
+ }
+
+ PrintDebug("Vnet: In Hanlder.RunUdp: socket: %d receive from ip %x, port %d\n", hd->fd, hd->remote_address, hd->remote_port);
+
+ pt->size = V3_RecvFrom_IP(hd->fd, hd->remote_address, hd->remote_port, pt->data, ETHERNET_PACKET_LEN);
+
+ if (pt->size <= 0){
+ PrintDebug("Vnet: Hanlder:ProcessUdp: receiving packet from UDP fails\n");
+ V3_Free(pt);
+ return;
+ }
+
+ PrintDebug("Vnet: In Hanlder.RunUdp: get packet\n");
+ print_packet(pt->data, pt->size);
+
+
+ v3_enqueue(vnet_inpkt_q, (addr_t)pt);
+
+ }
+}
+
+
+static void RunTcp(struct handler *hd)
+{
+ struct v3_sock_set fds;
+ int rc;
+
+ while (1) {
+ V3_SOCK_ZERO(&fds);
+ V3_SOCK_SET(hd->fd, &fds);
+ rc = V3_Select_Socket(&fds, NULL, NULL, NULL);
+
+ PrintDebug("Vnet: In Hanlder.Run: Return from Select(): rc : %d\n", rc);
+
+ if (rc < 0) {
+ PrintError("Vnet: In Hanlder.Run: Return from Select() Error: rc : %d\n", rc);
+ return;
+ } else if (rc == 0) {
+ // huh? didn't ask for timeouts so just repeat
+ continue;
+ } else {
+ hanlder_ProcessTcp(hd);
+ }
+ }
+}
+
+static int vnet_handle(struct handler *hd)
+{
+ if (use_tcp)
+ RunTcp(hd);
+ else
+ RunUdp(hd);
+
+ return 0;
+}
+
+static bool handler_tx_packet(struct handler *hd, RawEthernetPacket *pt)
+{
+
+ if (pt == NULL) {
+ PrintError("VNET Hanlder: sending a NULL packet\n");
+
+ return false;
+ }
+
+ PrintDebug("VNET Hanlder: socket: %d local %x:[%d], remote %x:[%d]\n", hd->fd, hd->local_address, hd->local_port, hd->remote_address, hd->remote_port);
+
+ if (use_tcp)
+ return RawEthernetPacketSerialize(pt, hd->fd);
+ else
+ return RawEthernetPacketSendUdp(pt, hd->fd, hd->remote_address, hd->remote_port);
+}
+
+
+int V3_Send_pkt(uchar_t *buf, int length)
+{
+ PrintDebug("VNET: In V3_Send_pkt: pkt length %d\n", length);
+
+ print_packet((char *)buf, length);
+
+ return vnet_send_pkt((char *)buf, length);
+}
+
+int V3_Register_pkt_event(int (*netif_input)(uchar_t * pkt, uint_t size))
+{
+ return vnet_register_pkt_event("NE2000", netif_input, NULL);
+}
+
+int vnet_send_pkt(char *buf, int length)
+{
+ struct handler * hd;
+ RawEthernetPacket pt;
+
+ hd = get_handler();
+
+ if (hd == NULL){
+ return -1;
+ }
+
+ PrintDebug("Vnet: vnet_send_pkt: get handler: %p\n", hd);
+
+ RawEthernetPacketInit(&pt, buf, length); //====here we copy sending data once
+
+ if (!handler_tx_packet(hd, &pt))
+ return -1;
+
+ V3_Yield();
+
+ return 0;
+
+}
+
+int vnet_register_pkt_event(char *dev_name, int (*netif_input)(uchar_t * pkt, uint_t size), void *data)
+{
+ struct vnet_device *dev;
+
+ dev = (struct vnet_device *)V3_Malloc(sizeof(struct vnet_device));
+
+ if(dev == NULL){
+ PrintError("VNET: Malloc fails\n");
+ return -1;
+ }
+
+ strncpy(dev->name, dev_name, (strlen(dev_name) < 50)?strlen(dev_name):50);
+
+ dev->input = netif_input;
+ dev->data = data;
+
+ if (!add_device(dev))
+ return -1;
+
+ return 0;
+}
+
+int vnet_check()
+{
+// struct vnet_device *(*dev)[]; -- YT
+// struct vnet_device *dev;
+ RawEthernetPacket *pt;
+ int link_index;
+// int i;
+
+ //PrintDebug("VNET: In vnet_check\n");
+
+ V3_Yield();
+
+// while (((pt = (RawEthernetPacket *)v3_dequeue(vnet_inpkt_q)) != NULL)&&((link_index = (int *)v3_dequeue(src_link_index_q)) != NULL)){
+ while ((pt = (RawEthernetPacket *)v3_dequeue(vnet_inpkt_q)) != NULL){
+#ifdef ROUTE
+/* dev = get_device(pt);
+ //while (dev[device_num] != NULL) { //multi-get_device -- YT
+ if (dev == NULL){
+ PrintDebug("VNET: In vnet_check: pkt length %d, no destination device, pkt discarded\n", (int)pt->size);
+ V3_Free(pt);
+ continue;
+ }
+
+ dev->input((uchar_t *)pt->data, pt->size);
+
+ PrintDebug("VNET: In vnet_check: pkt length %d, device: %s\n", (int)pt->size, dev->name);
+
+ for (i = 0; i < (int)pt->size; i++)
+ PrintDebug("%x ", pt->data[i]);
+ PrintDebug("\n");
+*/
+ link_index = pt->index;
+ if(HandleDataOverLink(pt, link_index)) {
+ PrintDebug("VNET: vnet_check: Receive and Send a packet!\n"); //--YT
+ }
+#endif
+// V3_Free(link_index);
+ V3_Free(pt); //be careful here
+ }
+
+ return 0;
+}
+
+static int handler_thread(void *arg)
+{
+ struct handler *hd = (struct handler *)arg;
+
+ return vnet_handle(hd);
+}
+
+static int vnet_setup_handler(int con_fd, ctype local_config, int remote_addr, int remote_port)
+{
+ struct handler *h;
+
+ h = (struct handler *)V3_Malloc(sizeof(struct handler));
+
+ if (local_config != LOCAL && local_config != REMOTE){
+ PrintError("VNET: bad local config\n");
+ return -1;
+ }
+ h->local_config = local_config;
+
+ h->local_address = bind_address;
+ h->local_port = bind_port;
+
+ h->remote_address = remote_addr;
+ h->remote_port = remote_port;
+
+
+ if (h->local_config == LOCAL) {
+ if ((h->fd = V3_Create_TCP_Socket() < 0)){
+ PrintError("VNET: can't create socket\n");
+ return -1;
+ }
+
+ if (V3_Connect_To_IP(h->fd, h->remote_address, h->remote_port) < 0){
+ V3_Close_Socket(h->fd);
+ PrintError("VNET: can't connect to remote VNET server\n");
+ return -1;
+ }
+
+ PrintDebug("VNET: ConnectToHost done\n");
+ } else if (local_config == REMOTE) {
+ if (con_fd < 0) {
+ PrintError("VNET: Invalid socket discriptor\n");
+ return -1;
+ }
+ h->fd = con_fd;
+ } else {
+ return -1;
+ }
+
+ add_handler(h);
+
+ // Now run protocol to bootstrap the remote VNET server
+ PrintDebug("VNET: socket connection done socket: %d\n", h->fd);
+
+ V3_CREATE_THREAD(&handler_thread, (void *)h, "VNET_HANDLER");
+
+ return 0;
+}
+
+static int vnet_setup_tcp()
+{
+ uint_t remote_ip;
+ uint_t remote_port;
+ int accept_socket;
+ int connection_socket;
+ uint_t server_ip = (0 | 172 << 24 | 23 << 16 | 1 );
+ uint_t server_port = 22;
+
+
+ if (vnet_server) {
+ if ((accept_socket = V3_Create_TCP_Socket() < 0)){
+ PrintError("VNET: Can't setup socket\n");
+ return -1;
+ }
+
+ if (bind_address == 0) {
+ if (V3_Bind_Socket(accept_socket, bind_port) < 0){
+ PrintError("VNET: Can't bind socket\n");
+ return -1;
+ }
+ } else {
+ if (0) {//BindSocketwAdx(accept_socket, bind_address, bind_port) < 0){
+ PrintError("VNET: Can't bind socket\n");
+ return -1;
+ }
+ }
+
+ if (V3_Listen_Socket(accept_socket, 1) < 0) {
+ PrintError("VNET: Can't listen socket\n");
+ return -1;
+ }
+
+ // create new connection for each handler remotely
+ // this will stuck the initiation of vnet
+ // TODO: put this in a separate kernel thread
+ do{
+ PrintDebug("VNET: In Accepting Socket\n");
+
+ connection_socket = V3_Accept_Socket(accept_socket, &remote_ip, &remote_port);
+
+ PrintDebug("VNET: return from Accepting Socket %d\n", connection_socket);
+
+ if (connection_socket < 0){
+ PrintError("VNET: Accept failed");
+ return -1;
+ }
+
+ //At this point our TCP connection is setup and running
+ vnet_setup_handler(connection_socket, REMOTE, 0, 0);
+ }while (0);
+ }else { //vnet_host
+ PrintDebug("VNET: In host status\n");
+
+ //At this point our TCP connection is not setup
+ vnet_setup_handler(-1, LOCAL, server_ip, server_port);
+ }
+
+ return 0;
+}
+
+
+static int vnet_setup_udp()
+{
+ uint_t client_ip = (0 | 172 << 24 | 23 << 16 | 2 );
+ uint_t client_port = 22;
+ int socket;
+ uint_t server_ip = (0 | 172 << 24 | 23 << 16 | 1 );
+ uint_t server_port = 22;
+ struct handler *hd;
+
+ hd = (struct handler *)V3_Malloc(sizeof(struct handler));
+
+ if ((socket = V3_Create_UDP_Socket()) < 0){
+ PrintError("VNET: Can't setup udp socket\n");
+ return -1;
+ }
+
+
+ if (vnet_server) {// vnet_proxy
+ PrintDebug("VNET: In proxy status local ip: %x, %d\n", server_ip, server_port);
+
+ if (V3_Bind_Socket(socket, server_port) < 0){
+ PrintError("VNET: Can't bind socket\n");
+ return -1;
+ }
+
+ hd->local_address = server_ip;
+ hd->local_port = server_port;
+ hd->remote_address = client_ip;
+ hd->remote_port = client_port;
+ hd->fd = socket;
+ hd->remote_config = REMOTE;
+ }else { //vnet_host
+ PrintDebug("VNET: In host status local ip: %x\n", client_ip);
+
+ if (V3_Bind_Socket(socket, client_port) < 0){
+ PrintError("VNET: Can't bind socket\n");
+ return -1;
+ }
+
+ hd->local_address = client_ip;
+ hd->local_port = client_port;
+ hd->remote_address = server_ip;
+ hd->remote_port = server_port;
+ hd->fd = socket;
+ hd->remote_config = LOCAL;
+ }
+
+ PrintDebug("VNET: vnet_setup_udp new handler: socket: %d local %x:[%d], remote %x:[%d]\n", hd->fd, hd->local_address, hd->local_port, hd->remote_address, hd->remote_port);
+
+ add_handler(hd);
+
+ PrintDebug("VNET: add handler: %d\n", hd->fd);
+
+ V3_CREATE_THREAD(&handler_thread, (void *)hd, "VNET_HANDLER");
+
+ return 0;
+}
+
+
+void vnet_init()
+{
+ int i=0;
+
+ #ifdef VNET_SERVER
+ vnet_server = 1;
+ #endif
+
+ extern struct v3_socket_hooks * sock_hooks;
+ PrintDebug("In VMM_SOCK: %p\n", sock_hooks);
+
+ PrintDebug("VNET Init: VNET_SERVER: %d\n", vnet_server);
+
+ vnet_inpkt_q = v3_create_queue();
+ v3_init_queue(vnet_inpkt_q);
+
+ //queue for src_link_index -- YT
+#ifdef ROUTE
+// src_link_index_q = v3_create_queue();
+// v3_init_queue(src_link_index_q);
+#endif
+
+ for (i = 0; i < NUM_DEVICES; i++)
+ available_devices[i] = NULL;
+
+ for (i = 0; i < NUM_HANDLERS; i++)
+ active_handlers[i] = NULL;
+
+ if (use_tcp)
+ vnet_setup_tcp();
+ else
+ vnet_setup_udp();
+
+ //not continue on the guest
+ //while(1){}
+}
+
+#if 0
+
+static void test_send(int sock, int time)
+{
+ char *buf = "\001\002\003\004\005\006\007\008\009\010\011\012\013\014\015\n";
+ int i, j;
+ int num;
+
+ i = time;
+ while(i-- > 0){
+ num = V3_Send_pkt((uchar_t *)buf, strlen(buf));
+
+ PrintDebug("VNET: In test Send: sent size %d\n", num);
+
+ for (j = 0; i < strlen(buf); j++)
+ PrintDebug("%x ", buf[j]);
+ PrintDebug("\n");
+ }
+}
+
+ #endif
+
