From: Lei Xia Date: Tue, 26 Jan 2010 22:08:31 +0000 (-0600) Subject: Delete outdated vnet files in devices/ X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?p=palacios.git;a=commitdiff_plain;h=0351e0cd3603086bf45b90c030d8657410cf461e Delete outdated vnet files in devices/ --- diff --git a/palacios/include/devices/vnet.h b/palacios/include/devices/vnet.h deleted file mode 100644 index 91cde55..0000000 --- a/palacios/include/devices/vnet.h +++ /dev/null @@ -1,139 +0,0 @@ -/* - * This file is part of the Palacios Virtual Machine Monitor developed - * by the V3VEE Project with funding from the United States National - * Science Foundation and the Department of Energy. - * - * The V3VEE Project is a joint project between Northwestern University - * and the University of New Mexico. You can find out more at - * http://www.v3vee.org - * - * Copyright (c) 2009, Lei Xia - * Copyright (c) 2009, Yuan Tang - * Copyright (c) 2009, Jack Lange - * Copyright (c) 2009, Peter Dinda - * All rights reserved. - * - * Author: Lei Xia - * Yuan Tang - * Jack Lange - * Peter Dinda -#include -#include -#include -#include -#include - - -#define ETHERNET_HEADER_LEN 14 -#define ETHERNET_DATA_MIN 46 -#define ETHERNET_DATA_MAX 1500 -#define ETHERNET_PACKET_LEN (ETHERNET_HEADER_LEN + ETHERNET_DATA_MAX) - -//the routing entry -struct routing { - char src_mac[6]; - char dest_mac[6]; - - int src_mac_qual; - int dest_mac_qual; - - int dest; - int type; //EDGE_TYPE|INTERFACE_TYPE - - int src; - int src_type; - - int use; - - int next; - int prev; -}; - - //This is the structure that stores the topology -struct topology { - SOCK link_sock; - - unsigned long dest; - - // Port for UDP - unsigned short remote_port; - - // LINK OR GATEWAY - // int link_class; - - int use; - int type; //TCP=0, UDP=1,VTP=2, can be extended so on - - int next; - int prev; -}; - -struct sock_list { - SOCK sock; - - int next; - int prev; -}; - - -#define GENERAL_NIC 0 - -struct vnet_if_device { - char name[50]; - struct ethAddr device_addr; - - int (*input)(uchar_t * pkt, uint_t size); - - void * data; -}; - - -struct device_list { - struct vnet_if_device *device; - - int use; - int type; - - int next; - int prev; -}; - -// 14 (ethernet frame) + 20 bytes -struct HEADERS { - char ethernetdest[6]; - char ethernetsrc[6]; - unsigned char ethernettype[2]; // indicates layer 3 protocol type - char ip[20]; -}; - -#define FOREACH(iter, list, start) for (iter = start; iter != -1; iter = list[iter].next) -#define FOREACH_SOCK(iter, socks, start) FOREACH(iter, socks, start) -#define FOREACH_LINK(iter, links, start) FOREACH(iter, links, start) -#define FOREACH_ROUTE(iter, routes, start) FOREACH(iter, routes, start) -#define FOREACH_DEVICE(iter, devices, start) FOREACH(iter, devices, start) - - -int V3_Send_pkt(uchar_t *buf, int length); -int V3_Register_pkt_event(int (*netif_input)(uchar_t * pkt, uint_t size)); - - -int vnet_send_pkt(char *buf, int length); -int vnet_register_pkt_event(char *dev_name, int (*netif_input)(uchar_t * pkt, uint_t size), void *data); - -int vnet_pkt_process(); - -void vnet_init(); - -#endif - - diff --git a/palacios/src/devices/vnet.c b/palacios/src/devices/vnet.c deleted file mode 100644 index f94c18e..0000000 --- a/palacios/src/devices/vnet.c +++ /dev/null @@ -1,1174 +0,0 @@ -/* - * This file is part of the Palacios Virtual Machine Monitor developed - * by the V3VEE Project with funding from the United States National - * Science Foundation and the Department of Energy. - * - * The V3VEE Project is a joint project between Northwestern University - * and the University of New Mexico. You can find out more at - * http://www.v3vee.org - * - * Copyright (c) 2009, Lei Xia - * Copyright (c) 2009, Yuan Tang - * Copyright (c) 2009, Jack Lange - * Copyright (c) 2009, Peter Dinda - * Copyright (c) 2009, The V3VEE Project - * All rights reserved. - * - * Author: Lei Xia - * Yuan Tang - * Jack Lange - * Peter Dinda - -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"; - -static const char link_edge_str[] = "EDGE"; -static const char link_any_str[] = "ANY"; - -typedef enum {MAC_ANY, MAC_NOT, MAC_NONE, MAC_EMPTY} mac_type_t; -typedef enum {LINK_EDGE, LINK_ANY} link_type_t; - - -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 struct device_list g_devices[MAX_DEVICES]; -static int g_num_devices; -static int g_first_device; -static int g_last_device; - - -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) { - 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) { - PrintDebug("Vnet: print_device_addr: "); - v3_hexdump(ethaddr, 6, NULL, 0); -} -#endif - - -//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); -} - - - - - -/* 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; - -// This is the hash value, Format: 0: num_matched_routes, 1...n: matches[] -- TY -struct route_cache_entry { - int num_matched_routes; - int * matches; -}; - -#define HASH_KEY_LEN 16 -#define MIN_CACHE_SIZE 100 - -//Header of the route cache -static struct hashtable * g_route_cache; - -static uint_t hash_from_key_fn(addr_t hashkey) { - uint8_t * key = (uint8_t *)hashkey; - return v3_hash_buffer(key, HASH_KEY_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); - - if (g_route_cache == NULL){ - PrintError("Vnet: Route Cache Initiate Failurely\n"); - return -1; - } - - return 0; -} - -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 = 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() { - 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) { - 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; - - for (i = 0; i < n_matches; i++) { - matches[i] = found->matches[i]; - } - } - - return n_matches; -} - - - - -static inline uint8_t hex_nybble_to_nybble(const uint8_t hexnybble) { - uint8_t x = toupper(hexnybble); - - if (isdigit(x)) { - return x - '0'; - } else { - return 10 + (x - 'A'); - } -} - -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, 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(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(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; - } - } - - 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) { - g_first_link = i; - } - - g_links[i].prev = g_last_link; - g_links[i].next = -1; - - if (g_last_link != -1) { - g_links[g_last_link].next = i; - } - - g_last_link = i; - - g_num_links++; - - return i; - } - } - - return -1; -} - - -int add_sock(struct sock_list *socks, int len, int *first_sock, int *last_sock, SOCK fd) { - int i; - - for (i = 0; i < len; i++) { - if (socks[i].sock == -1) { - socks[i].sock = fd; - - if (*first_sock == -1) { - *first_sock = i; - } - - socks[i].prev = *last_sock; - socks[i].next = -1; - - if (*last_sock != -1) { - socks[*last_sock].next = i; - } - - *last_sock = i; - - return i; - } - } - return -1; -} - - -int 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; - } - } - - clear_hash_cache(); - - return -1; -} - - -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) && - ((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 -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; - } - - 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); - - if (index == -1) { - return -1; - } - - 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); - } - - 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) { - 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--; - - 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; -} - -int delete_sock(struct sock_list * socks, int * first_sock, int * last_sock, SOCK fd) { - int i; - int prev_i; - int next_i; - - - FOREACH_SOCK(i, socks, (*first_sock)) { - if (socks[i].sock == fd) { - V3_Close_Socket(socks[i].sock); - socks[i].sock = -1; - - prev_i = socks[i].prev; - next_i = socks[i].next; - - if (prev_i != -1) { - socks[prev_i].next = socks[i].next; - } - - if (next_i != -1) { - socks[next_i].prev = socks[i].prev; - } - - if (*first_sock == i) { - *first_sock = socks[i].next; - } - - if (*last_sock == i) { - *last_sock = socks[i].prev; - } - - socks[i].next = -1; - socks[i].prev = -1; - - return 0; - } - } - return -1; -} - -//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 - - 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); - } - } - - - //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); - - } - } -} - -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 - - 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++; - } - } - - //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; -} - -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) { - 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; - - struct HEADERS headers; - - // 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("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); - } - } - - 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; - - 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"); - return -1; - } - } else { - PrintDebug("Vnet: Wrong Edge type\n"); - } - } - - return 0; -} - -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); - - v3_enqueue(g_inpkt_q, (addr_t)pt); - return 0; - -} - -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) { - 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; -} - -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; - } - } - } - - return -1; -} - -static struct vnet_if_device * delete_device_from_table(int index) { - int next_i; - int prev_i; - struct vnet_if_device * device = 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) { - 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; - - device = g_devices[index].device; - g_devices[index].device = NULL; - - g_num_devices--; - - return device; -} - - -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 i; - - 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; - } - - 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 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); - v3_hexdump(pt->data, pt->size, NULL, 0); - - if(handle_one_pkt(pt)) { - PrintDebug("VNET: vnet_check: handle one packet!\n"); - } - - V3_Free(pt); //be careful here - } - - return 0; -} - - - -static int process_udpdata() { - struct raw_ethernet_pkt * pt; - - 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" - - //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_Yield(); - } -} - - - -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_links[i].prev = -1; - } - - g_first_link = -1; - g_last_link = -1; - g_num_links = 0; -} - -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_devices[i].prev = -1; - } - - g_first_device = -1; - g_last_device = -1; - g_num_devices = 0; -} - -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_routes[i].prev = -1; - } - - 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 v3_vnet_init() { - - PrintDebug("VNET Init: Vnet input queue successful.\n"); - - init_tables(); - - - store_topologies(udp_data_socket); - - start_recv_data(); -} - -