* 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, Peter Dinda <pdinda@northwestern.edu>
* Copyright (c) 2009, The V3VEE Project <http://www.v3vee.org>
* All rights reserved.
*
* Author: Lei Xia <lxia@northwestern.edu>
- * Yuan Tang <ytang@northwestern.edu>
- * Jack Lange <jarusl@cs.northwestern.edu>
- * Peter Dinda <pdinda@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>
-#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;
-
+static const char any_type_str[] = "any";
+static const char not_type_str[] = "not";
+static const char none_type_str[] = "none";
+static const char empty_type_str[] = "empty";
-#define NUM_DEVICES 1
-#define NUM_HANDLERS 1
+static const char link_edge_str[] = "EDGE";
+static const char link_any_str[] = "ANY";
-static struct vnet_device *available_devices[NUM_DEVICES];
+typedef enum {MAC_ANY, MAC_NOT, MAC_NONE, MAC_EMPTY} mac_type_t;
+typedef enum {LINK_EDGE, LINK_ANY} link_type_t;
-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;
+struct raw_ethernet_pkt {
+ int size;
+ char data[ETHERNET_PACKET_LEN];
+};
+static struct topology g_links[MAX_LINKS];
+static int g_num_links; //The current number of links
+static int g_first_link;
+static int g_last_link;
+static struct routing g_routes[MAX_ROUTES];
+static int g_num_routes; //The current number of routes
+static int g_first_route;
+static int g_last_route;
-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");
-}
+static struct device_list g_devices[MAX_DEVICES];
+static int g_num_devices;
+static int g_first_device;
+static int g_last_device;
-#if !(ROUTE)
-static struct vnet_device *get_device(RawEthernetPacket *pt)
-{
- return available_devices[0];
+static void print_packet(char *pkt, int size) {
+ PrintDebug("Vnet: print_data_packet: size: %d\n", size);
+ v3_hexdump(pkt, size, NULL, 0);
}
-#endif
-static struct handler * get_handler()
-{
-
- return active_handlers[0];
+#if 0
+static void print_packet_addr(char *pkt) {
+ PrintDebug("Vnet: print_packet_destination_addr: ");
+ v3_hexdump(pkt + 8, 6, NULL, 0);
+
+ PrintDebug("Vnet: print_packet_source_addr: ");
+ v3_hexdump(pkt + 14, 6, NULL, 0);
}
-static inline bool add_handler(struct handler *hd)
-{
- int num = 0;
-
- while (active_handlers[num] != NULL) num ++;
-
- if (num >= NUM_HANDLERS)
- return false;
+static void print_device_addr(char *ethaddr) {
+ PrintDebug("Vnet: print_device_addr: ");
+ v3_hexdump(ethaddr, 6, NULL, 0);
+}
+#endif
- active_handlers[num] = hd;
- return true;
+//network connection functions
+static inline void raw_ethernet_packet_init(struct raw_ethernet_pkt * pt, const char * data, const size_t size) {
+ pt->size = size;
+ memcpy(pt->data, data, size);
}
-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;
- }
+/* Hash key format:
+ * 0-5: src_eth_addr
+ * 6-11: dest_eth_addr
+ * 12: src type
+ * 13-16: src index
+ */
+typedef char * route_hashkey_t;
- return mysocket;
-}
+// This is the hash value, Format: 0: num_matched_routes, 1...n: matches[] -- TY
+struct route_cache_entry {
+ int num_matched_routes;
+ int * matches;
+};
-int BindSocketwPort(const int mysocket, const int myport)
-{
- if (V3_Bind_Socket(mysocket, myport) < 0) {
- return -1;
- }
-
- return 0;
-}
+#define HASH_KEY_LEN 16
+#define MIN_CACHE_SIZE 100
-int ListenSocket(const int mysocket, const int maxc)
-{
- return V3_Listen_Socket(mysocket, maxc);
-}
+//Header of the route cache
+static struct hashtable * g_route_cache;
-int ConnectToHost(const int mysocket, const int hostip, const int port)
-{
- return V3_Connect_To_IP(mysocket, hostip, port);
+static uint_t hash_from_key_fn(addr_t hashkey) {
+ uint8_t * key = (uint8_t *)hashkey;
+ return v3_hash_buffer(key, HASH_KEY_LEN);
}
-/*
-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;
- }
+static int hash_key_equal(addr_t key1, addr_t key2) {
+ uint8_t * buf1 = (uint8_t *)key1;
+ uint8_t * buf2 = (uint8_t *)key2;
+ return (memcmp(buf1, buf2, HASH_KEY_LEN) == 0);
}
+static int init_route_cache() {
+ g_route_cache = v3_create_htable(MIN_CACHE_SIZE, &hash_from_key_fn, &hash_key_equal);
-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;
+ if (g_route_cache == NULL){
+ PrintError("Vnet: Route Cache Initiate Failurely\n");
+ return -1;
}
-}
-
-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;
- }
+ return 0;
}
-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;
+static void make_hash_key(route_hashkey_t hashkey, char src_addr[6], char dest_addr[6], char src_type, int src_index) {
+ int j;
- if (received >= size)
- break;
- }
-
- return received;
-}
+ for (j = 0; j < 6; j++) {
+ hashkey[j] = src_addr[j];
+ hashkey[j + 6] = dest_addr[j] + 1;
+ }
+ hashkey[12] = src_type;
-int PutLine(int mysocket, char *buf, int size)
-{
- buf[size] = '\n';
- return (Send(mysocket, buf, size+1, true) - 1);
+ *(int *)(hashkey + 12) = src_index;
}
-#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;
+static int add_route_to_cache(route_hashkey_t hashkey, int num_matched_r, int * matches) {
+ struct route_cache_entry * new_entry = NULL;
+ int i;
+
+ new_entry = (struct route_cache_entry *)V3_Malloc(sizeof(struct route_cache_entry));
+ if (new_entry == NULL){
+ PrintError("Vnet: Malloc fails\n");
+ return -1;
}
- }
-
- 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);
+
+ new_entry->num_matched_routes = num_matched_r;
- if (oneshot) {
- return rc;
- }
-
- if (rc <= 0) {
- return rc;
- } else {
- left -= rc;
+ new_entry->matches = (int *)V3_Malloc(num_matched_r * sizeof(int));
+
+ if (new_entry->matches == NULL){
+ PrintError("Vnet: Malloc fails\n");
+ return -1;
}
- }
- 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;
+
+ for (i = 0; i < num_matched_r; i++) {
+ new_entry->matches[i] = matches[i];
}
- if (writeall(fd,pt->data,pt->size,0,1)!=(int)(pt->size))
- {
- PrintError("Vnet: Serialization Exception\n");
- return false;
+
+ //here, when v3_htable_insert return 0, it means insert fails
+ if (v3_htable_insert(g_route_cache, (addr_t)hashkey, (addr_t)new_entry) == 0){
+ PrintError("Vnet: Insert new route entry to cache failed\n");
+ V3_Free(new_entry->matches);
+ V3_Free(new_entry);
}
-
- return true;
+
+ return 0;
}
-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;
+static int clear_hash_cache() {
+ v3_free_htable(g_route_cache, 1, 1);
+
+ g_route_cache = v3_create_htable(MIN_CACHE_SIZE, hash_from_key_fn, hash_key_equal);
+
+ if (g_route_cache == NULL){
+ PrintError("Vnet: Route Cache Create Failurely\n");
+ return -1;
}
- return true;
+ return 0;
}
-static bool RawEthernetPacketSendUdp(RawEthernetPacket *pt, int sock_fd, int ip, short port)
-{
- int size;
+static int look_into_cache(route_hashkey_t hashkey, int * matches) {
+ int n_matches = -1;
+ int i = 0;
+ struct route_cache_entry * found = NULL;
+
+ found = (struct route_cache_entry *)v3_htable_search(g_route_cache, (addr_t)hashkey);
+
+ if (found != NULL) {
+ n_matches = found->num_matched_routes;
- 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;
+ for (i = 0; i < n_matches; i++) {
+ matches[i] = found->matches[i];
+ }
}
-
- 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");
+ return n_matches;
}
-*/
-#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;
+static inline uint8_t hex_nybble_to_nybble(const uint8_t hexnybble) {
+ uint8_t x = toupper(hexnybble);
- 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;
+ if (isdigit(x)) {
+ return x - '0';
+ } else {
+ return 10 + (x - 'A');
}
- 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;
+static inline uint8_t hex_byte_to_byte(const uint8_t hexbyte[2]) {
+ return ((hex_nybble_to_nybble(hexbyte[0]) << 4) +
+ (hex_nybble_to_nybble(hexbyte[1]) & 0xf));
}
-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;
-}
+static inline void string_to_mac(const char * str, uint8_t mac[6]) {
+ int k;
-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;
-*/
-}
-
-//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];
+ for (k = 0; k < 6; k++) {
+ mac[k] = hex_byte_to_byte(&(str[(2 * k) + k]));
}
- 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);
+static inline void mac_to_string(uint8_t mac[6], char * buf) {
+ snprintf("%x:%x:%x:%x:%x:%x",
+ mac[0], mac[1], mac[2],
+ mac[3], mac[4], mac[5]);
}
-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;
+#if 0
+static void ip_to_string(uint32_t addr, char * buf) {
+ uint32_t addr_st;
+ char * tmp_str;
+
+ addr_st = v3_htonl(addr);
+ tmp_str = v3_inet_ntoa(addr_st);
+
+ memcpy(buf, tmp_str, strlen(tmp_str));
}
-/*
-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);
+#endif
- memcpy(buf, tmp_str, strlen(tmp_str));
-}
-*/
int find_link_by_fd(SOCK sock) {
- int i;
+ int i;
- FOREACH_LINK(i, g_links, g_first_link) {
- if (g_links[i].link_sock == sock) {
- return 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;
+
+ return -1;
}
-
-
-//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;
+int vnet_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].type = type;
+ g_links[i].link_sock = fd;
+ g_links[i].remote_port = data_port;
+ g_links[i].use = 1;
+
+ 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;
+
+ return -1;
}
+int add_sock(struct sock_list *socks, int len, int *first_sock, int *last_sock, SOCK fd) {
+ int i;
-
-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;
+ 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;
+ 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;
+int vnet_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;
+
+ clear_hash_cache();
+
+ 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;
- }
+static int find_link_entry(unsigned long dest, int type) {
+ int i;
- if ((remote_he = gethostbyname(remote_address.c_str())) == NULL) {
- *ret_str = "Could not lookup address of " + remote_address;
- return CTRL_ERROR;
- }
+ 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;
+}
- dest_addr = *((struct in_addr *)remote_he->h_addr);
- dest = dest_addr.s_addr;
+static int delete_link_entry(int index) {
+ int next_i;
+ int prev_i;
- link_index = find_link_entry(dest, get_tunnel_type(type));
+ if (g_links[index].use == 0) {
+ return -1;
+ }
- if (link_index != -1) {
- JRLDBG("Link already exists\n");
- *ret_str = "Link already Exists";
- return CTRL_ERROR;
- }
+ g_links[index].dest = 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(type == TCP_STR) {
- struct sockaddr_in serv_addr;
+ if (prev_i != -1) {
+ g_links[prev_i].next = g_links[index].next;
+ }
- if ((data_sock = CreateAndSetupTcpSocket()) < 0) {
- cerr << "the client descriptor could not be opened" << endl;
- *ret_str = "Could not establish link";
- return CTRL_ERROR;
+ if (next_i != -1) {
+ g_links[next_i].prev = g_links[index].prev;
}
- 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;
- }
-
+ if (g_first_link == index) {
+ g_first_link = g_links[index].next;
+ }
- local_port = data_port;
+ if (g_last_link == index) {
+ g_last_link = g_links[index].prev;
+ }
- *ret_str = "Successfully added a TCP link to " + remote_address;
- ret = CTRL_ADD_TCP_SOCK;
-
- } else if(type == UDP_STR) {
+ g_links[index].next = -1;
+ g_links[index].prev = -1;
- 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");
- }
+ g_num_links--;
+
+ return 0;
+}
- link_index = add_link_entry(dest, get_tunnel_type(type), LINK, data_port, 1, data_sock);
+int vnet_delete_link_entry_by_addr(unsigned long dest, int type) {
+ int index = find_link_entry(dest, type);
- if (link_index == -1) {
- *ret_str = "Could not add link entry";
- if (type == TCP_STR) {
- CLOSE_SSL(use_ssl_data, ssl);
- CLOSE(*link_sock);
+ if (index == -1) {
+ return -1;
}
- return CTRL_ERROR;
- }
-
- JRLDBG("Addlink Created link: FD=%d\n", g_links[link_index].link_sock);
- return ret;
+ return delete_link_entry(index);
}
-
-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;
+static 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];
-
- {
- 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);
+ if ((src_mac_qual != ANY_TYPE) && (src_mac_qual != NONE_TYPE)) {
+ memcpy(temp_src_mac, src_mac, 6);
} else {
- src_mac_qual = EMPTY_TYPE;
+ memset(temp_src_mac, 0, 6);
}
- 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);
+ if ((dest_mac_qual != ANY_TYPE) && (dest_mac_qual != NONE_TYPE)) {
+ memcpy(temp_dest_mac, dest_mac, 6);
} else {
- dest_mac_qual = EMPTY_TYPE;
+ memset(temp_dest_mac, 0, 6);
}
- 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;
+ 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;
+ }
+ }
- 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;
+ return -1;
+}
- } else if (src_type == EDGE) {
+static int delete_route_entry(int index) {
+ int next_i;
+ int prev_i;
- if (src_str == ANY_SRC) {
- src = -1;
- } else {
- hostent * src_he;
+ memset(g_routes[index].src_mac, 0, 6);
+ memset(g_routes[index].dest_mac, 0, 6);
- 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;
- }
+ 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;
- src = find_link_entry((*((struct in_addr *)src_he->h_addr)).s_addr, -1);
+ prev_i = g_routes[index].prev;
+ next_i = g_routes[index].next;
- 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;
- }
+ if (prev_i != -1) {
+ g_routes[prev_i].next = g_routes[index].next;
}
-
- 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;
+ if (next_i != -1) {
+ g_routes[next_i].prev = g_routes[index].prev;
}
- }
- 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;
+
+ if (g_first_route == index) {
+ g_first_route = g_routes[index].next;
+ }
- g_num_devices--;
+ if (g_last_route == index) {
+ g_last_route = g_routes[index].prev;
+ }
- return 0;
+ g_routes[index].next = -1;
+ g_routes[index].prev = -1;
+
+ g_num_routes--;
+
+ clear_hash_cache();
+
+ 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;
+int vnet_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;
}
- }
-
- 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;
+
+ delete_route_entry(index);
+
+ 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);
+int delete_sock(struct sock_list * socks, int * first_sock, int * last_sock, SOCK fd) {
+ int i;
+ int prev_i;
+ int next_i;
+
- if (index == -1) {
+ 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;
- }
-
- delete_route_entry(index);
-
- return 0;
}
+//setup the topology of the testing network
+static void store_topologies(SOCK fd) {
+ int i;
+ int src_mac_qual = ANY_TYPE;
+ int dest_mac_qual = ANY_TYPE;
+ uint_t dest;
+#ifndef VNET_SERVER
+ dest = (0 | 172 << 24 | 23 << 16 | 1 );
+ PrintDebug("VNET: store_topologies. NOT VNET_SERVER, dest = %x\n", dest);
+#else
+ dest = (0 | 172 << 24 | 23 << 16 | 2 );
+ PrintDebug("VNET: store_topologies. VNET_SERVER, dest = %x\n", dest);
+#endif
-#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;
- }
+ int type = UDP_TYPE;
+ int src = 0;
+ int src_type= ANY_SRC_TYPE;
+ int data_port = 22;
- 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;
+ //store link table
+ for (i = 0; i < MAX_LINKS; i++) {
+ if (g_links[i].use == 0) {
+ g_links[i].dest = (int)dest;
+ g_links[i].type = type;
+ g_links[i].link_sock = fd;
+ g_links[i].remote_port = data_port;
+ g_links[i].use = 1;
+
+ 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++;
+ PrintDebug("VNET: store_topologies. new link: socket: %d, remote %x:[%d]\n", g_links[i].link_sock, (uint_t)g_links[i].dest, g_links[i].remote_port);
+ }
}
- 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;
+
+ //store route table
+
+ type = EDGE_TYPE;
+ dest = 0;
+
+ 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 = (int)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++;
+
+ PrintDebug("VNET: store_topologies. new route: src_mac: %s, dest_mac: %s, dest: %d\n", g_routes[i].src_mac, g_routes[i].dest_mac, dest);
+
+ }
}
+}
- 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;
+static int match_route(uint8_t * src_mac, uint8_t * dst_mac, int src_type, int src_index, int * matches) {
+ int values[MAX_ROUTES];
+ int matched_routes[MAX_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("Vnet: MatchRoute: 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++;
+ }
+ }
+ }
}
+ //end FOREACH_ROUTE
- 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);
+ 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("Vnet: MatchRoute: We matched a default route (%d)\n", i);
+ num_matches++;
+ }
+ }
- 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;
+ //If many rules have been matched, we choose one which has the highest value rating
+ if (num_matches == 0) {
+ return 0;
}
-
- 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;
+
+ 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;
+}
- 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;
- }
+static inline int if_write_pkt(struct vnet_if_device *iface, struct raw_ethernet_pkt * pkt) {
+ return iface->input((uchar_t *)pkt->data, pkt->size);
+}
- route_type = EDGE_TYPE;
- }
+static int handle_one_pkt(struct raw_ethernet_pkt * pkt) {
+ int src_link_index = 0; //the value of src_link_index of udp always is 0
+ int i;
+ char src_mac[6];
+ char dst_mac[6];
+ int matches[g_num_routes];
+ int num_matched_routes = 0;
- if (src_type.empty() || (src_type == ANY_SRC)) {
- src = -1;
- src_route_type = ANY_SRC_TYPE;
- } else if (src_type == INTERFACE) {
+ struct HEADERS headers;
+
+ // get the ethernet and ip headers from the packet
+ memcpy((void *)&headers, (void *)pkt->data, sizeof(headers));
- if (src_str.empty()) {
- ret_str->assign("Missing Source INTERFACE");
- return CTRL_ERROR;
+ int j;
+ for (j = 0;j < 6; j++) {
+ src_mac[j] = headers.ethernetsrc[j];
+ dst_mac[j] = headers.ethernetdest[j];
}
- 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;
+#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("Vnet: HandleDataOverLink. SRC(%s), DEST(%s)\n", src_str, dest_str);
+#endif
+
+ char hash_key[HASH_KEY_SIZE];
+ make_hash_key(hash_key, src_mac, dst_mac, EDGE_TYPE, src_link_index);
+
+ num_matched_routes = look_into_cache((route_hashkey_t)hash_key, matches);
+
+ if (num_matched_routes == -1) { //no match
+ num_matched_routes = match_route(src_mac, dst_mac, pkt->type, src_link_index, matches);
+
+ if (num_matched_routes > 0) {
+ add_route_to_cache(hash_key, num_matched_routes,matches);
+ }
}
-
- 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;
- }
+ PrintDebug("Vnet: HandleDataOverLink: 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];
+
+ PrintDebug("Vnet: HandleDataOverLink: Forward packet from link according to Route entry %d\n", route_index);
+
+ if (g_routes[route_index].type == EDGE_TYPE) {
+ link_index = g_routes[route_index].dest;
+
+ if(g_links[link_index].type == UDP_TYPE) {
+ int size;
+
+ 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 -1;
+ }
+
+ PrintDebug("Vnet: HandleDataOverLink: Serializing UDP Packet to link_sock [%d], dest [%x], remote_port [%d], size [%d]\n", g_links[link_index].link_sock, (uint_t)g_links[link_index].dest, g_links[link_index].remote_port, (int)pkt->size);
+
+ } else if (g_links[link_index].type == TCP_TYPE) {
+
+ }
+ } else if (g_routes[route_index].type == INTERFACE_TYPE) {
+ dev_index = g_routes[route_index].dest;
- src = find_link_entry((*((struct in_addr *)src_he->h_addr)).s_addr, -1);
+ PrintDebug("Writing Packet to device=%s\n", g_devices[dev_index].device->name);
- 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;
- }
+ if (if_write_pkt(g_devices[dev_index].device, pkt) == -1) {
+ PrintDebug("Can't write output packet to link\n");
+ return -1;
+ }
+ } else {
+ PrintDebug("Vnet: Wrong Edge type\n");
+ }
}
- 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;
+ return 0;
}
-#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;
+static int send_ethernet_pkt(char * buf, int length) {
+ struct raw_ethernet_pkt * pt;
- 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;
+ pt = (struct raw_ethernet_pkt *)V3_Malloc(sizeof(struct raw_ethernet_pkt));
+ raw_ethernet_packet_init(pt, buf, length); //====here we copy sending data once
+
+ PrintDebug("VNET: vm_send_pkt: transmitting packet: (size:%d)\n", (int)pt->size);
+ print_packet((char *)buf, length);
+
+ v3_enqueue(g_inpkt_q, (addr_t)pt);
+ return 0;
+
+}
- socks[i].next = -1;
- socks[i].prev = -1;
+int V3_Send_pkt(uchar_t *buf, int length) {
+ PrintDebug("VNET: In V3_Send_pkt: pkt length %d\n", length);
+
+ return send_ethernet_pkt((char *)buf, length);
+}
- return 0;
+static int add_device_to_table(struct vnet_if_device*device, int type) {
+ int i;
+
+ for (i = 0; i < MAX_DEVICES; i++) {
+ if (g_devices[i].use == 0) {
+ 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;
+
+ 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)
+static int search_device(char *device_name) {
+ int i;
- //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.
+ for (i = 0; i < MAX_DEVICES; i++) {
+ if (g_devices[i].use == 1) {
+ if (!strcmp(device_name, g_devices[i].device->name)) {
+ return i;
+ }
+ }
+ }
+
+ return -1;
}
-*/
-
-
-//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;
+static struct vnet_if_device * delete_device_from_table(int index) {
+ int next_i;
+ int prev_i;
+ struct vnet_if_device * device = NULL;
- g_num_links++;
+ if (g_devices[index].use == 0) {
+ return NULL;
}
- }
- //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_devices[index].use = 0;
- g_last_route = i;
+ prev_i = g_devices[index].prev;
+ next_i = g_devices[index].next;
- g_num_routes++;
+ 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;
+ }
-//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) {
+ if (g_first_device == index) {
+ g_first_device = g_devices[index].next;
+ }
- int values[g_num_routes];
- int matched_routes[g_num_routes];
+ if (g_last_device == index) {
+ g_last_device = g_devices[index].prev;
+ }
- int num_matches = 0;
- int i;
- int max = 0;
- int no = 0;
- int exact_match = 0;
+ g_devices[index].next = -1;
+ g_devices[index].prev = -1;
+ device = g_devices[index].device;
+ g_devices[index].device = NULL;
+ g_num_devices--;
- 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;
- }
+ return device;
+}
- 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++;
- }
+int vnet_register_device(char * dev_name, int (*netif_input)(uchar_t * pkt, uint_t size), void * data) {
+ struct vnet_if_device * dev;
- 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++;
- }
- }
- }
- }
+ dev = (struct vnet_if_device *)V3_Malloc(sizeof(struct vnet_if_device));
- 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 (dev == NULL){
+ PrintError("VNET: Malloc fails\n");
+ return -1;
}
- }
- }
-
- 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;
+ strncpy(dev->name, dev_name, 50);
+ dev->input = netif_input;
+ dev->data = data;
- 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 (add_device_to_table(dev, GENERAL_NIC) == -1) {
+ return -1;
}
- 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];
+int vnet_unregister_device(char * dev_name) {
+ int 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());
+ i = search_device(dev_name);
+
+ if (i == -1) {
+ return -1;
}
-#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);
+ struct vnet_if_device * device = delete_device_from_table(i);
- if (if_write_pkt(g_devices[dev_index].vnet_device, pkt) == -1) {
- PrintDebug("Can't write output packet to link\n");
- return false;
- }
+ if (device == NULL) {
+ return -1;
}
- }
- 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;
- }
+ V3_Free(device);
- 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);
- }
- }
+ return 0;
}
-static int vnet_handle(struct handler *hd)
-{
- if (use_tcp)
- RunTcp(hd);
- else
- RunUdp(hd);
-
- return 0;
+int V3_Register_pkt_event(int (*netif_input)(uchar_t * pkt, uint_t size)) {
+ return vnet_register_device("NE2000", netif_input, NULL);
}
-static bool handler_tx_packet(struct handler *hd, RawEthernetPacket *pt)
-{
+int vnet_pkt_process() {
+ struct raw_ethernet_pkt * pt;
+ int i;
- if (pt == NULL) {
- PrintError("VNET Hanlder: sending a NULL packet\n");
+ PrintDebug("VNET: In vnet_check\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;
+ while ((pt = (struct raw_ethernet_pkt *)v3_dequeue(g_inpkt_q)) != NULL) {
+ PrintDebug("VNET: In vnet_check: pt length %d, pt type %d\n", (int)pt->size, (int)pt->type);
+ v3_hexdump(pt->data, pt->size, NULL, 0);
+
+ if(handle_one_pkt(pt)) {
+ PrintDebug("VNET: vnet_check: handle one packet!\n");
}
-
- 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;
+ V3_Free(pt); //be careful here
+ }
+
+ 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;
+static int process_udpdata() {
+ struct raw_ethernet_pkt * pt;
- if (!add_device(dev))
- return -1;
+ uint32_t dest = 0;
+ uint16_t remote_port = 0;
+ SOCK link_sock = g_udp_sockfd;
+ int length = sizeof(struct raw_ethernet_pkt) - (2 * sizeof(int)); //minus the "size" and "type"
- return 0;
-}
+ //run in a loop to get packets from outside network, adding them to the incoming packet queue
+ while (1) {
+ pt = (struct raw_ethernet_pkt *)V3_Malloc(sizeof(struct raw_ethernet_pkt));
-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();
+ if (pt == NULL){
+ PrintError("Vnet: process_udp: Malloc fails\n");
+ continue;
+ }
-// 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
+ PrintDebug("Vnet: route_thread: socket: [%d]. ready to receive from ip [%x], port [%d] or from VMs\n", link_sock, (uint_t)dest, remote_port);
+ pt->size = V3_RecvFrom_IP( link_sock, dest, remote_port, pt->data, length);
+ PrintDebug("Vnet: route_thread: socket: [%d] receive from ip [%x], port [%d]\n", link_sock, (uint_t)dest, remote_port);
+
+ if (pt->size <= 0) {
+ PrintDebug("Vnet: process_udp: receiving packet from UDP fails\n");
+ V3_Free(pt);
+ return -1;
}
+
+ PrintDebug("Vnet: process_udp: get packet\n");
+ print_packet(pt->data, pt->size);
- return 0;
-}
-
-static int handler_thread(void *arg)
-{
- struct handler *hd = (struct handler *)arg;
-
- return vnet_handle(hd);
+
+ //V3_Yield();
+ }
}
-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");
+static void init_link_table() {
+ int i;
- return 0;
+ for (i = 0; i < MAX_LINKS; i++) {
+ g_links[i].use = 0;
+ g_links[i].next = -1;
+ g_links[i].prev = -1;
+ }
+
+ g_first_link = -1;
+ g_last_link = -1;
+ g_num_links = 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);
- }
+static void init_device_table() {
+ int i;
- return 0;
+ for (i = 0; i < MAX_DEVICES; i++) {
+ g_devices[i].use = 0;
+ g_devices[i].next = -1;
+ g_devices[i].prev = -1;
+ }
+
+ g_first_device = -1;
+ g_last_device = -1;
+ g_num_devices = 0;
}
+static void init_route_table() {
+ int i;
-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;
- }
+ for (i = 0; i < MAX_ROUTES; i++) {
+ g_routes[i].use = 0;
+ g_routes[i].next = -1;
+ g_routes[i].prev = -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;
+ g_first_route = -1;
+ g_last_route = -1;
+ g_num_routes = 0;
}
+static void init_tables() {
+ init_link_table();
+ init_device_table();
+ init_route_table();
+ init_route_cache();
+}
-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();
+void v3_vnet_init() {
- //not continue on the guest
- //while(1){}
-}
+ PrintDebug("VNET Init: Vnet input queue successful.\n");
-#if 0
+ init_tables();
+
-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;
+ store_topologies(udp_data_socket);
- 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");
- }
+ start_recv_data();
}
-
- #endif
+
