#define ANY_SRC_TYPE 2
struct raw_ethernet_pkt {
- int size;
- int type; // vm or link type: INTERFACE|EDGE
- char data[ETHERNET_PACKET_LEN];
+ int size;
+ int type; // vm or link type: INTERFACE|EDGE
+ char data[ETHERNET_PACKET_LEN];
};
//static char *vnet_version = "0.9";
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 int g_last_device;
static SOCK g_udp_sockfd;
-static struct gen_queue * g_inpkt_q;//packet receiving queue
+static struct gen_queue * g_inpkt_q; //packet receiving queue
-static void print_packet(char *pkt, int size)
-{
- int i;
-
- PrintDebug("Vnet: print_data_packet: size: %d\n", size);
- for (i = 0; i < size; i ++)
- PrintDebug("%x ", pkt[i]);
- PrintDebug("\n");
+static void print_packet(char *pkt, int size) {
+ PrintDebug("Vnet: print_data_packet: size: %d\n", size);
+ v3_hexdump(pkt, size, NULL, 0);
}
#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_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 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");
+static void print_device_addr(char *ethaddr) {
+ PrintDebug("Vnet: print_device_addr: ");
+ v3_hexdump(ethaddr, 6, NULL, 0);
}
#endif
//network connection functions
#if 0
-static 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;
-}
-
-static int BindSocketwPort(const int mysocket, const int myport)
-{
- if (V3_Bind_Socket(mysocket, myport) < 0) {
- return -1;
- }
-
- return 0;
-}
-
-static int ListenSocket(const int mysocket, const int maxc)
-{
- return V3_Listen_Socket(mysocket, maxc);
-}
-
-static int ConnectToHost(const int mysocket, const int hostip, const int port)
-{
- return V3_Connect_To_IP(mysocket, hostip, port);
-}
-
-
-static void close(int mysocket)
-{
- V3_Close_Socket(mysocket);
-}
-
-static int raw_ethernet_pkt_sendUdp(struct raw_ethernet_pkt *pt, int sock_fd, int ip, short port)
-{
+static int raw_ethernet_pkt_sendUdp(struct raw_ethernet_pkt *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);
#endif
-static 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 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);
}
-#define in_range(c, lo, up) ((char)c >= lo && (char)c <= up)
-//#define islower(c) in_range(c, 'a', 'z')
#define HASH_KEY_SIZE 16
*/
typedef char * route_hashkey_t;
-struct route_cache_entry // This is the hash value, Format: 0: num_matched_routes, 1...n: matches[] -- TY
-{
+// 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 * matches;
};
-static struct hashtable *g_route_cache; //Header of the route cache
+//Header of the route cache
+static struct hashtable * g_route_cache;
-static uint_t hash_from_key_fn(addr_t hashkey)
-{
+static uint_t hash_from_key_fn(addr_t hashkey) {
uint_t hash = 0;
uint_t temp = 0;
int i;
- char *key =(char *)hashkey;
+ char * key = (char *)hashkey;
for (i = 0; i < HASH_KEY_SIZE; i++) {
hash = (hash << 4) + *(key + i) + i;
+
if ((temp = (hash & 0xF0000000))) {
hash ^= (temp >> 24);
}
+
hash &= ~temp;
}
PrintDebug("Hash Value: %lu\n", (unsigned long)hash);
return hash;
}
-static int hash_key_equal(addr_t left, addr_t right)
-{
+static int hash_key_equal(addr_t left, addr_t right) {
int i;
- char *key1, *key2;
+ char * key1, * key2;
key1 = (char *)left;
key2 = (char *)right;
- for(i = 0; i < HASH_KEY_SIZE; i++) {
+ for (i = 0; i < HASH_KEY_SIZE; i++) {
if (key1[i] != key2[i]) {
- PrintDebug("HASHes not equal\n");
-
- return -1;
+ PrintDebug("HASHes not equal\n");
+ return -1;
}
}
return 0;
}
-static int init_route_cache()
-{
+static int init_route_cache() {
g_route_cache = v3_create_htable(MIN_CACHE_SIZE, &hash_from_key_fn, &hash_key_equal);
if (g_route_cache == NULL){
}
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;
-
- for(j = 0; j < 6; j++) {
- hashkey[j] = src_addr[j];
- hashkey[j + 6] = dest_addr[j] + 1;
- }
- hashkey[12] = src_type;
- *(int *)(hashkey + 12) = src_index;
-}
-
-static int add_route_to_cache(route_hashkey_t hashkey, int num_matched_r, int *matches)
-{
- struct route_cache_entry *new_entry = (struct route_cache_entry *)V3_Malloc(sizeof(struct route_cache_entry));
-
- if (new_entry == NULL){
- PrintError("Vnet: Malloc fails\n");
- return -1;
- }
+ int j;
- new_entry->num_matched_routes = num_matched_r;
- int i;
+ for (j = 0; j < 6; j++) {
+ hashkey[j] = src_addr[j];
+ hashkey[j + 6] = dest_addr[j] + 1;
+ }
- new_entry->matches = (int *)V3_Malloc(num_matched_r*sizeof(int));
+ hashkey[12] = src_type;
- if (new_entry->matches == NULL){
- PrintError("Vnet: Malloc fails\n");
- return -1;
- }
-
- for(i = 0; i < num_matched_r; i++) {
- new_entry->matches[i] = matches[i];
- }
+ *(int *)(hashkey + 12) = src_index;
+}
- //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 0;
+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;
+ }
+
+ new_entry->num_matched_routes = num_matched_r;
+
+ new_entry->matches = (int *)V3_Malloc(num_matched_r * sizeof(int));
+
+ if (new_entry->matches == NULL){
+ PrintError("Vnet: Malloc fails\n");
+ return -1;
+ }
+
+ for(i = 0; i < num_matched_r; i++) {
+ new_entry->matches[i] = matches[i];
+ }
+
+ //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 0;
}
-static int clear_hash_cache()
-{
+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 0;
}
-static int look_into_cache(route_hashkey_t hashkey, int *matches)
-{
+static int look_into_cache(route_hashkey_t hashkey, int * matches) {
int n_matches = -1;
- int i;
- struct route_cache_entry *found;
-
+ 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;
- for (i = 0; i < n_matches; i++)
+
+ for (i = 0; i < n_matches; i++) {
matches[i] = found->matches[i];
+ }
}
return n_matches;
}
-static inline char vnet_toupper(char c)
-{
- if (islower(c))
- c -= 'a'-'A';
- return c;
-}
-static inline char hexnybbletonybble(const char hexnybble) {
- char x = vnet_toupper(hexnybble);
- if ((x >= '0') && (x <= '9')) {
- return x - '0';
- } else {
- return 10 + (x - 'A');
- }
-}
-static inline void hexbytetobyte(const char hexbyte[2], char *byte) {
- *byte = ((hexnybbletonybble(hexbyte[0]) << 4) +
- (hexnybbletonybble(hexbyte[1]) & 0xf));
-}
+static inline uint8_t hex_nybble_to_nybble(const uint8_t hexnybble) {
+ uint8_t x = toupper(hexnybble);
-static inline char nybbletohexnybble(const char nybble) {
- return (nybble >= 10) ? (nybble - 10 + 'A') : (nybble + '0');
+ if (isdigit(x)) {
+ return x - '0';
+ } else {
+ return 10 + (x - 'A');
+ }
}
-static inline void bytetohexbyte(const char byte, char hexbyte[2]) {
- hexbyte[0] = nybbletohexnybble((byte >> 4) & 0xf);
- hexbyte[1] = nybbletohexnybble(byte & 0xf);
+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));
}
-static inline 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);
- }
+
+static inline void string_to_mac(const char * str, uint8_t mac[6]) {
+ int k;
+
+ for (k = 0; k < 6; k++) {
+ mac[k] = hex_byte_to_byte(&(str[(2 * k) + k]));
+ }
}
-static inline 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;
+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]);
}
#if 0
-static void ip_to_string(ulong_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));
+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));
}
#endif
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;
- }
- }
+ int i;
- return -1;
+ FOREACH_LINK(i, g_links, g_first_link) {
+ if (g_links[i].link_sock == sock) {
+ return i;
+ }
+ }
+
+ return -1;
}
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)
+ 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[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++;
-
+ }
+
+ 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;
-
- 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;
+ int 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 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)) {
+ 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 {
+ } else {
memset(g_routes[i].src_mac, 0, 6);
- }
-
- if ((dest_mac_qual != ANY_TYPE) && (dest_mac_qual != NONE_TYPE)) {
+ }
+
+ if ((dest_mac_qual != ANY_TYPE) && (dest_mac_qual != NONE_TYPE)) {
memcpy(g_routes[i].dest_mac, dest_mac, 6);
- } else {
+ } 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[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;
+ }
+
+ g_last_route = i;
+
+ g_num_routes++;
+
+ return i;
+ }
}
- }
-
- clear_hash_cache();
-
- return -1;
+
+ clear_hash_cache();
+
+ return -1;
}
-static int find_link_entry(unsigned long dest, int type)
-{
- int i;
+static int find_link_entry(unsigned long dest, int type) {
+ int i;
- FOREACH_LINK(i, g_links, g_first_link) {
- if ((g_links[i].dest == 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;
-}
-
-static int delete_link_entry(int index)
-{
- int next_i;
- int prev_i;
-
- if (g_links[index].use == 0) {
+ return i;
+ }
+ }
+
return -1;
- }
-
- 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 (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;
+static int delete_link_entry(int index) {
+ int next_i;
+ int prev_i;
+
+ if (g_links[index].use == 0) {
+ return -1;
+ }
- if (g_last_link == index)
- g_last_link = g_links[index].prev;
+ g_links[index].dest = 0;
+ g_links[index].type = 0;
+ g_links[index].link_sock = -1;
+ g_links[index].use = 0;
- g_links[index].next = -1;
- g_links[index].prev = -1;
+ prev_i = g_links[index].prev;
+ next_i = g_links[index].next;
- g_num_links--;
+ if (prev_i != -1) {
+ g_links[prev_i].next = g_links[index].next;
+ }
- return 0;
+ 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 vnet_delete_link_entry_by_addr(unsigned long dest, int type)
-{
- int index = find_link_entry(dest, type);
+int vnet_delete_link_entry_by_addr(unsigned long dest, int type) {
+ int index = find_link_entry(dest, type);
- if (index == -1) {
- return -1;
- }
+ if (index == -1) {
+ return -1;
+ }
- return delete_link_entry(index);
+ return delete_link_entry(index);
}
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];
-
- 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);
- }
+ 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 ((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;
+ 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;
}
-static int delete_route_entry(int index)
-{
+static 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;
+ int next_i;
+ int prev_i;
- g_num_routes--;
+ memset(g_routes[index].src_mac, 0, 6);
+ memset(g_routes[index].dest_mac, 0, 6);
- clear_hash_cache();
+ 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;
- return 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--;
+
+ clear_hash_cache();
+
+ return 0;
}
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;
- }
-
- delete_route_entry(index);
-
- return 0;
+ 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;
}
-int delete_sock(struct sock_list * socks, int *first_sock, int *last_sock, SOCK fd) {
- int i;
- int prev_i;
- int next_i;
-
+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;
+ 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;
+ return -1;
}
//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;
+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);
+ 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);
+ dest = (0 | 172 << 24 | 23 << 16 | 2 );
+ PrintDebug("VNET: store_topologies. VNET_SERVER, dest = %x\n", dest);
#endif
- int type = UDP_TYPE;
- int src = 0;
- int src_type= ANY_SRC_TYPE;
- int data_port = 22;
-
- //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);
- }
- }
+ int type = UDP_TYPE;
+ int src = 0;
+ int src_type= ANY_SRC_TYPE;
+ int data_port = 22;
+
+ //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;
+ }
-
- //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_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);
+ }
+ }
+
+
+ //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);
-
+ }
+
+ 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);
+
}
- }
+ }
}
-static int match_route(char *src_mac, char *dst_mac, int src_type, int src_index, int *matches)
-{
+static int match_route(char *src_mac, char *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 ((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 (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) {
+ }
+
+ 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] = 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++;
- }
- }
+ 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) {
+ }
+
+ 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] = 5;
+ values[num_matches] = 7;
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
-
- FOREACH_ROUTE(i, g_routes, g_first_route) {
+ }
+ }
+ //end FOREACH_ROUTE
+
+ 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++;
+ (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++;
}
- }
-
- //If many rules have been matched, we choose one which has the highest value rating
- if (num_matches == 0) {
+ }
+
+ //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++) {
+ }
+
+ for (i = 0; i < num_matches; i++) {
if (values[i] > max) {
- no = 0;
- max = values[i];
- matches[no] = matched_routes[i];
- no++;
+ no = 0;
+ max = values[i];
+ matches[no] = matched_routes[i];
+ no++;
} else if (values[i] == max) {
- matches[no] = matched_routes[i];
- no++;
+ matches[no] = matched_routes[i];
+ no++;
}
- }
-
- return no;
+ }
+
+ return no;
}
-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);
+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);
}
-static int handle_one_pkt(struct raw_ethernet_pkt *pkt)
-{
+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];
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];
+ 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("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
+
+ 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 (num_matched_routes > 0) {
+ add_route_to_cache(hash_key, num_matched_routes,matches);
+ }
}
-
+
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_links[link_index].type == TCP_TYPE) {
+
}
} 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].device, pkt) == -1) {
- PrintDebug("Can't write output packet to link\n");
+ PrintDebug("Can't write output packet to link\n");
return -1;
}
} else {
return 0;
}
-static int send_ethernet_pkt(char *buf, int length)
-{
- struct raw_ethernet_pkt *pt;
+static int send_ethernet_pkt(char * buf, int length) {
+ struct raw_ethernet_pkt * pt;
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);
}
-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);
+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);
}
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)
+ 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[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++;
-
+ g_last_device = i;
+ g_num_devices++;
+
return i;
- }
- }
-
- return -1;
+ }
+ }
+
+ return -1;
}
-static int search_device(char *device_name)
-{
+static int search_device(char *device_name) {
int i;
- for (i=0; i<MAX_DEVICES; i++)
- if (g_devices[i].use == 1){
- if (!strcmp(device_name, g_devices[i].device->name))
- return i;
+ 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;
}
-static struct vnet_if_device* delete_device_from_table(int index)
-{
+static struct vnet_if_device * delete_device_from_table(int index) {
int next_i;
int prev_i;
- struct vnet_if_device *device = NULL;
+ struct vnet_if_device * device = NULL;
- if (g_devices[index].use == 0)
- return NULL;
+ if (g_devices[index].use == 0) {
+ return NULL;
+ }
g_devices[index].use = 0;
prev_i = g_devices[index].prev;
next_i = g_devices[index].next;
- if (prev_i != -1)
+ if (prev_i != -1) {
g_devices[prev_i].next = g_devices[index].next;
+ }
- if (next_i != -1)
+ if (next_i != -1) {
g_devices[next_i].prev = g_devices[index].prev;
+ }
- if (g_first_device == index)
+ if (g_first_device == index) {
g_first_device = g_devices[index].next;
+ }
- if (g_last_device == index)
+ if (g_last_device == index) {
g_last_device = g_devices[index].prev;
+ }
g_devices[index].next = -1;
g_devices[index].prev = -1;
}
-int vnet_register_device(char *dev_name, int (*netif_input)(uchar_t * pkt, uint_t size), void *data)
-{
- struct vnet_if_device *dev;
-
- dev = (struct vnet_if_device *)V3_Malloc(sizeof(struct vnet_if_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_to_table(dev, GENERAL_NIC) == -1)
- return -1;
-
- return 0;
+int vnet_register_device(char * dev_name, int (*netif_input)(uchar_t * pkt, uint_t size), void * data) {
+ struct vnet_if_device * dev;
+
+ dev = (struct vnet_if_device *)V3_Malloc(sizeof(struct vnet_if_device));
+
+ if (dev == NULL){
+ PrintError("VNET: Malloc fails\n");
+ return -1;
+ }
+
+ strncpy(dev->name, dev_name, 50);
+ dev->input = netif_input;
+ dev->data = data;
+
+ if (add_device_to_table(dev, GENERAL_NIC) == -1) {
+ return -1;
+ }
+
+ return 0;
}
-int vnet_unregister_device(char *dev_name)
-{
+int vnet_unregister_device(char * dev_name) {
int i;
- i=search_device(dev_name);
- if (i == -1)
+ i = search_device(dev_name);
+
+ if (i == -1) {
return -1;
+ }
- struct vnet_if_device *device = delete_device_from_table(i);
- if (device == NULL)
- return -1;
+ struct vnet_if_device * device = delete_device_from_table(i);
+
+ if (device == NULL) {
+ return -1;
+ }
V3_Free(device);
return 0;
}
-int V3_Register_pkt_event(int (*netif_input)(uchar_t * pkt, uint_t size))
-{
- return vnet_register_device("NE2000", netif_input, NULL);
-
+int V3_Register_pkt_event(int (*netif_input)(uchar_t * pkt, uint_t size)) {
+ return vnet_register_device("NE2000", netif_input, NULL);
}
-int vnet_pkt_process()
-{
- struct raw_ethernet_pkt *pt;
- int i;
- PrintDebug("VNET: In vnet_check\n");
-
- 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);
+int vnet_pkt_process() {
+ struct raw_ethernet_pkt * pt;
+ int i;
- for (i = 0; i < (int)pt->size; i++)
- PrintDebug("%x ", pt->data[i]);
- PrintDebug("\n");
+ PrintDebug("VNET: In vnet_check\n");
- if(handle_one_pkt(pt)) {
- PrintDebug("VNET: vnet_check: handle one packet!\n");
- }
-
- V3_Free(pt); //be careful here
+ 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");
}
-
- return 0;
+
+ V3_Free(pt); //be careful here
+ }
+
+ return 0;
}
-static int process_tcpdata()
-{
- return 0;
+static int process_tcpdata() {
+ return 0;
}
-static int process_udpdata()
-{
-
- struct raw_ethernet_pkt *pt;
+static int process_udpdata() {
+ struct raw_ethernet_pkt * pt;
- unsigned long dest = 0;
- unsigned short remote_port = 0;
+ 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"
+ int length = sizeof(struct raw_ethernet_pkt) - (2 * sizeof(int)); //minus the "size" and "type"
//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));
- if (pt == NULL){
- PrintError("Vnet: process_udp: Malloc fails\n");
- continue;
- }
-
- 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);
-
- v3_enqueue(g_inpkt_q, (addr_t)pt);
-
- //V3_Yield();
+ pt = (struct raw_ethernet_pkt *)V3_Malloc(sizeof(struct raw_ethernet_pkt));
+ if (pt == NULL){
+ PrintError("Vnet: process_udp: Malloc fails\n");
+ continue;
+ }
+
+ 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);
+
+ v3_enqueue(g_inpkt_q, (addr_t)pt);
+
+ //V3_Yield();
}
}
-static int indata_handler( )
-{
- if (use_tcp)
- process_tcpdata();
- else
- process_udpdata( );
-
- return 0;
+static int indata_handler( ) {
+ if (use_tcp) {
+ process_tcpdata();
+ } else {
+ process_udpdata( );
+ }
+
+ return 0;
}
-static int start_recv_data()
-{
- if (use_tcp){
-
- } else {
- SOCK udp_data_socket;
-
- if ((udp_data_socket = V3_Create_UDP_Socket()) < 0){
- PrintError("VNET: Can't setup udp socket\n");
- return -1;
- }
- PrintDebug("Vnet: vnet_setup_udp: get socket: %d\n", udp_data_socket);
- g_udp_sockfd = udp_data_socket;
-
- store_topologies(udp_data_socket);
-
- if (V3_Bind_Socket(udp_data_socket, vnet_udp_port) < 0){
- PrintError("VNET: Can't bind socket\n");
- return -1;
- }
- PrintDebug("VNET: vnet_setup_udp: bind socket successful\n");
+static int start_recv_data() {
+ if (use_tcp) {
+
+ } else {
+ SOCK udp_data_socket;
+
+ if ((udp_data_socket = V3_Create_UDP_Socket()) < 0) {
+ PrintError("VNET: Can't setup udp socket\n");
+ return -1;
}
- V3_CREATE_THREAD(&indata_handler, NULL, "VNET_DATA_HANDLER");
- return 0;
+ PrintDebug("Vnet: vnet_setup_udp: get socket: %d\n", udp_data_socket);
+ g_udp_sockfd = udp_data_socket;
+
+ store_topologies(udp_data_socket);
+
+ if (V3_Bind_Socket(udp_data_socket, vnet_udp_port) < 0) {
+ PrintError("VNET: Can't bind socket\n");
+ return -1;
+ }
+
+ PrintDebug("VNET: vnet_setup_udp: bind socket successful\n");
+ }
+
+ V3_CREATE_THREAD(&indata_handler, NULL, "VNET_DATA_HANDLER");
+
+ return 0;
}
-static void init_link_table()
-{
+static void init_link_table() {
int i;
+
for (i = 0; i < MAX_LINKS; i++) {
g_links[i].use = 0;
g_links[i].next = -1;
g_num_links = 0;
}
-static void init_device_table()
-{
+static void init_device_table() {
int i;
+
for (i = 0; i < MAX_DEVICES; i++) {
g_devices[i].use = 0;
g_devices[i].next = -1;
g_num_devices = 0;
}
-static void init_route_table()
-{
+static void init_route_table() {
int i;
+
for (i = 0; i < MAX_ROUTES; i++) {
g_routes[i].use = 0;
g_routes[i].next = -1;
g_num_routes = 0;
}
-static void init_tables()
-{
+static void init_tables() {
init_link_table();
init_device_table();
init_route_table();
init_route_cache();
}
-static void init_pkt_queue()
-{
+static void init_pkt_queue() {
PrintDebug("VNET Init package receiving queue\n");
g_inpkt_q = v3_create_queue();
v3_init_queue(g_inpkt_q);
}
-void vnet_init()
-{
+void v3_vnet_init() {
vnet_server = 0;
#ifdef VNET_SERVER
- vnet_server =1;
+ vnet_server = 1;
#endif
PrintDebug("VNET Init: Vnet input queue successful.\n");
