X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?a=blobdiff_plain;f=palacios%2Fsrc%2Fpalacios%2Fvmm_vnet.c;h=dffb6d43e1df97474b4e6f6a6aae112457dde77c;hb=Release-1.2;hp=02f518231b176afa398e88a33db2c252cda476ad;hpb=c43fab2e53aa1a129a1020410c67de0240369ec0;p=palacios.git diff --git a/palacios/src/palacios/vmm_vnet.c b/palacios/src/palacios/vmm_vnet.c index 02f5182..dffb6d4 100644 --- a/palacios/src/palacios/vmm_vnet.c +++ b/palacios/src/palacios/vmm_vnet.c @@ -8,148 +8,125 @@ * 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, Yuan Tang * Copyright (c) 2009, The V3VEE Project * All rights reserved. * * Author: Lei Xia * Yuan Tang - * Jack Lange - * Peter Dinda +#include +#include +#include -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_interface_str[] = "INTERFACE"; -static const char link_edge_str[] = "EDGE"; -static const char link_any_str[] = "ANY"; - -static const char link_prot_tcp_str[] = "tcp"; -static const char link_prot_udp_str[] = "udp"; - -typedef enum {MAC_ANY, MAC_NOT, MAC_NONE, MAC_EMPTY} mac_type_t; //for 'src_mac_qual' and 'dst_mac_qual' -typedef enum {LINK_INTERFACE, LINK_EDGE, LINK_ANY} link_type_t; //for 'type' and 'src_type' in struct routing -typedef enum {TCP_TYPE, UDP_TYPE} link_prot_type_t; +#ifndef CONFIG_DEBUG_VNET +#undef PrintDebug +#define PrintDebug(fmt, args...) +#endif -static const uint_t hash_key_size = 16; -static SOCK g_udp_sockfd; -static struct gen_queue * g_inpkt_q; -static bool use_tcp = false; -static uint_t vnet_udp_port = 1022; +// 14 (ethernet frame) + 20 bytes +struct in_pkt_header { + uchar_t ethernetdest[6]; + uchar_t ethernetsrc[6]; + uchar_t ethernettype[2]; //layer 3 protocol type + char ip[20]; +}__attribute__((packed)); -struct raw_ethernet_pkt { - int size; - int type; // vm or link type: INTERFACE|EDGE - char data[ETHERNET_PACKET_LEN]; -}; +#define MAX_LINKS 10 +#define MAX_ROUTES 10 +#define HASH_KEY_LEN 16 +#define MIN_CACHE_SIZE 100 +#define HASH_KEY_SIZE 16 -//static char *vnet_version = "0.9"; -//static int vnet_server = 0; +struct link_table { + struct link_entry * links[MAX_LINKS]; + uint16_t size; + v3_lock_t lock; +}__attribute__((packed)); +struct routing_table { + struct routing_entry * routes[MAX_ROUTES]; + uint16_t size; + v3_lock_t lock; +}__attribute__((packed)); -#define MAX_LINKS 1 -#define MAX_ROUTES 1 -#define MAX_DEVICES 16 +typedef char * route_hashkey_t; -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; +struct route_cache_entry { + int num_matched_routes; + int * matches; +}; -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; +struct vnet_state_t { + struct link_table g_links; + struct routing_table g_routes; + struct gen_queue * g_inpkt_q; + struct hashtable * g_route_cache; + v3_lock_t cache_lock; +}; -static struct device_list g_devices[MAX_DEVICES]; -static int g_num_devices; -static int g_first_device; -static int g_last_device; +static struct vnet_state_t g_vnet_state;//global state for vnet +static uint16_t ip_xsum(struct ip_header *ip_hdr, int hdr_len){ + long sum = 0; -static void print_packet(char *pkt, int size) { - PrintDebug("Vnet: print_data_packet: size: %d\n", size); - v3_hexdump(pkt, size, NULL, 0); -} + uint16_t *p = (uint16_t*) ip_hdr; + while(hdr_len > 1){ + sum += *(p++); + if(sum & 0x80000000) + sum = (sum & 0xFFFF) + (sum >> 16); + hdr_len -= 2; + } + + if(hdr_len) + sum += (uint16_t) *(uchar_t *)p; + + while(sum>>16) + sum = (sum & 0xFFFF) + (sum >> 16); -#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); + return (uint16_t)~sum; } -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) { +static void ethernet_packet_init(struct ethernet_pkt *pt, + uchar_t *data, + const size_t size) { pt->size = size; + pt->use_header = 0; + memset(&pt->ext_hdr, 0, sizeof(struct udp_link_header)); 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 inline uint_t hash_from_key_fn(addr_t hashkey) { + return v3_hash_buffer((uint8_t *)hashkey, 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 inline int hash_key_equal(addr_t key1, addr_t key2) { + return (memcmp((uint8_t *)key1, (uint8_t *)key2, 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); +static int init_route_cache(struct vnet_state_t *vnet_state) { + vnet_state->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"); + if (vnet_state->g_route_cache == NULL) { + PrintError("Vnet: Route Cache Init Fails\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) { +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++) { @@ -161,21 +138,24 @@ static void make_hash_key(route_hashkey_t hashkey, char src_addr[6], char dest_a *(int *)(hashkey + 12) = src_index; } -static int add_route_to_cache(route_hashkey_t hashkey, int num_matched_r, int * matches) { + +static int add_route_to_cache(route_hashkey_t hashkey, + int num_matched_r, + int * matches) { struct route_cache_entry * new_entry = NULL; + struct vnet_state_t *vnet_state = &g_vnet_state; int i; new_entry = (struct route_cache_entry *)V3_Malloc(sizeof(struct route_cache_entry)); - if (new_entry == NULL){ + 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){ + if (new_entry->matches == NULL) { PrintError("Vnet: Malloc fails\n"); return -1; } @@ -184,9 +164,8 @@ static int add_route_to_cache(route_hashkey_t hashkey, int num_matched_r, int * 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"); + if (v3_htable_insert(vnet_state->g_route_cache, (addr_t)hashkey, (addr_t)new_entry) == 0) { + PrintError("Vnet: Failed to insert new route entry to the cache\n"); V3_Free(new_entry->matches); V3_Free(new_entry); } @@ -195,11 +174,14 @@ static int add_route_to_cache(route_hashkey_t hashkey, int num_matched_r, int * } 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); + struct vnet_state_t *vnet_state = &g_vnet_state; + + v3_free_htable(vnet_state->g_route_cache, 1, 1); + vnet_state->g_route_cache = v3_create_htable(MIN_CACHE_SIZE, + hash_from_key_fn, + hash_key_equal); - if (g_route_cache == NULL){ + if (vnet_state->g_route_cache == NULL) { PrintError("Vnet: Route Cache Create Failurely\n"); return -1; } @@ -208,11 +190,13 @@ static int clear_hash_cache() { } static int look_into_cache(route_hashkey_t hashkey, int * matches) { + struct route_cache_entry * found = NULL; int n_matches = -1; int i = 0; - struct route_cache_entry * found = NULL; + struct vnet_state_t *vnet_state = &g_vnet_state; - found = (struct route_cache_entry *)v3_htable_search(g_route_cache, (addr_t)hashkey); + found = (struct route_cache_entry *)v3_htable_search(vnet_state->g_route_cache, + (addr_t)hashkey); if (found != NULL) { n_matches = found->num_matched_routes; @@ -226,7 +210,12 @@ static int look_into_cache(route_hashkey_t hashkey, int * matches) { } +#ifdef CONFIG_DEBUG_VNET +static void print_packet(uchar_t *pkt, int size) { + PrintDebug("Vnet: data_packet: size: %d\n", size); + v3_hexdump(pkt, size, NULL, 0); +} static inline uint8_t hex_nybble_to_nybble(const uint8_t hexnybble) { uint8_t x = toupper(hexnybble); @@ -243,8 +232,7 @@ static inline uint8_t hex_byte_to_byte(const uint8_t hexbyte[2]) { (hex_nybble_to_nybble(hexbyte[1]) & 0xf)); } - -static inline void string_to_mac(const char * str, uint8_t mac[6]) { +static inline void string_to_mac(const char *str, uint8_t mac[6]) { int k; for (k = 0; k < 6; k++) { @@ -252,988 +240,662 @@ static inline void string_to_mac(const char * str, uint8_t mac[6]) { } } -static inline void mac_to_string(int mac[6], char * buf) { - snprintf(buf, 20, "%x:%x:%x:%x:%x:%x", +static inline void mac_to_string(char mac[6], char * buf) { + snprintf(buf, 20, "%02x:%02x:%02x:%02x:%02x:%02x", 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; -} +static void print_route(struct routing_entry *route){ + char dest_str[18]; + char src_str[18]; -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; - } + mac_to_string(route->src_mac, src_str); + mac_to_string(route->dest_mac, dest_str); - 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; + PrintDebug("SRC(%s), DEST(%s), src_mac_qual(%d), dst_mac_qual(%d)\n", + src_str, + dest_str, + route->src_mac_qual, + route->dest_mac_qual); + PrintDebug("Src_Link(%d), src_type(%d), dst_link(%d), dst_type(%d)\n\n", + route->src_link_idx, + route->src_type, + route->link_idx, + route->link_type); } + - -int add_sock(struct sock_list *socks, int len, int *first_sock, int *last_sock, SOCK fd) { +static void dump_routes(struct routing_entry **route_tables) { 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; -} + PrintDebug("\nVnet: route table dump start =====\n"); - -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 != MAC_ANY) && (src_mac_qual != MAC_NONE)) { - memcpy(g_routes[i].src_mac, src_mac, 6); - } else { - memset(g_routes[i].src_mac, 0, 6); - } - - if ((dest_mac_qual != MAC_ANY) && (dest_mac_qual != MAC_NONE)) { - 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; - } + if (route_tables[i] != NULL){ + print_route(route_tables[i]); + } } - - clear_hash_cache(); - - return -1; -} + PrintDebug("\nVnet: route table dump end =====\n"); +} -static int find_link_entry(unsigned long dest, int type) { +static void dump_dom0_routes(struct routing_entry routes[], int size) { 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; -} + PrintDebug("\nVnet: route table from dom0 guest =====\n"); -static int delete_link_entry(int index) { - int next_i; - int prev_i; - - if (g_links[index].use == 0) { - return -1; + for(i = 0; i dest_ip, + link->dest_port, + link->pro_type); + PrintDebug("vnet_header:\n"); + v3_hexdump(&link->vnet_header, sizeof(struct udp_link_header), NULL, 0); } - - 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; + PrintDebug("\nVnet: link table dom0 guest end =====\n"); } -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); -} +#endif +static int __add_link_entry(struct link_entry * link) { + int idx; + struct vnet_state_t *vnet_state = &g_vnet_state; -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 != MAC_ANY) && (src_mac_qual != MAC_NONE)) { - memcpy(temp_src_mac, src_mac, 6); - } else { - memset(temp_src_mac, 0, 6); - } - - if ((dest_mac_qual != MAC_ANY) && (dest_mac_qual != MAC_NONE)) { - 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; + v3_lock(vnet_state->g_links.lock); + for (idx = 0; idx < MAX_LINKS; idx++) { + if (vnet_state->g_links.links[idx] == NULL) { + vnet_state->g_links.links[idx] = link; + vnet_state->g_links.size++; + break; } - } - - return -1; -} + } + v3_unlock(vnet_state->g_links.lock); -static int delete_route_entry(int index) { - int next_i; - int prev_i; + if (idx == MAX_LINKS) { + PrintDebug("VNET: No available Link entry for new link\n"); + return -1; + } - memset(g_routes[index].src_mac, 0, 6); - memset(g_routes[index].dest_mac, 0, 6); + return idx; +} - 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; +static int __add_route_entry(struct routing_entry * route) { + int idx; + struct vnet_state_t *vnet_state = &g_vnet_state; - 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; + v3_lock(vnet_state->g_routes.lock); + for (idx = 0; idx < MAX_ROUTES; idx++) { + if (vnet_state->g_routes.routes[idx] == NULL) { + vnet_state->g_routes.routes[idx] = route; + vnet_state->g_routes.size++; + break; + } } - - if (next_i != -1) { - g_routes[next_i].prev = g_routes[index].prev; + v3_unlock(vnet_state->g_routes.lock); + + if(idx == MAX_LINKS){ + PrintDebug("VNET: No available route entry for new route\n"); + return -1; } - - if (g_first_route == index) { - g_first_route = g_routes[index].next; - } - if (g_last_route == index) { - g_last_route = g_routes[index].prev; - } +#ifdef CONFIG_DEBUG_VNET + dump_routes(vnet_state->g_routes.routes); +#endif - g_routes[index].next = -1; - g_routes[index].prev = -1; - - g_num_routes--; - - clear_hash_cache(); - - return 0; + return idx; } -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 vnet_add_route_entry(char src_mac[6], + char dest_mac[6], + int src_mac_qual, + int dest_mac_qual, + int link_idx, + link_type_t link_type, + int src_link_idx, + link_type_t src_link_type) { + struct routing_entry * new_route = (struct routing_entry *)V3_Malloc(sizeof(struct routing_entry)); + int idx = -1; -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; + PrintDebug("Vnet: vnet_add_route_entry\n"); + + memset(new_route, 0, sizeof(struct routing_entry)); + if ((src_mac_qual != MAC_ANY)) { + memcpy(new_route->src_mac, src_mac, 6); + } - return 0; - } + if ((dest_mac_qual != MAC_ANY)) { + memcpy(new_route->dest_mac, dest_mac, 6); } - return -1; -} - -//setup the topology of the testing network -static void store_topologies(SOCK fd) { - int i; - int src_mac_qual = MAC_ANY; - int dest_mac_qual = MAC_ANY; - 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= LINK_ANY; //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; - } + new_route->src_mac_qual = src_mac_qual; + new_route->dest_mac_qual = dest_mac_qual; + new_route->link_idx= link_idx; + new_route->link_type = link_type; + new_route->src_link_idx = src_link_idx; + new_route->src_type = src_link_type; - 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); - } + if ((idx = __add_route_entry(new_route)) == -1) { + PrintError("Could not add route entry\n"); + return -1; } - - //store route table - - type = LINK_EDGE; - dest = 0; - - for (i = 0; i < MAX_ROUTES; i++) { - if (g_routes[i].use == 0) { - if ((src_mac_qual != MAC_ANY) && (src_mac_qual != MAC_NONE)) { - // memcpy(g_routes[i].src_mac, src_mac, 6); - } else { - memset(g_routes[i].src_mac, 0, 6); - } - - if ((dest_mac_qual != MAC_ANY) && (dest_mac_qual != MAC_NONE)) { - // 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); - - } - } + clear_hash_cache(); + + return idx; } -static int match_route(uint8_t * src_mac, uint8_t * dst_mac, int src_type, int src_index, int * matches) { - int values[MAX_ROUTES]; +static int match_route(uint8_t * src_mac, + uint8_t * dst_mac, + link_type_t src_type, + int src_index, + int * matches) { + struct routing_entry *route = NULL; + struct vnet_state_t *vnet_state = &g_vnet_state; 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 != LINK_ANY) && - ((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 == MAC_ANY) && - (g_routes[i].src_mac_qual == MAC_ANY) ) { - 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 != MAC_NOT) { - if (g_routes[i].dest_mac_qual == MAC_ANY) { - 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 != MAC_NOT) { - 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 != MAC_NOT) { - if (g_routes[i].src_mac_qual == MAC_ANY) { - 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 != MAC_NOT) { - if (exact_match == 0) { - matched_routes[num_matches] = i; - values[num_matches] = 8; - num_matches++; - } - } - } - } - } - - if ((g_routes[i].dest_mac_qual == MAC_NOT) && - (memcmp((void *)&g_routes[i].dest_mac, (void *)dst_mac, 6) != 0)) { - if (g_routes[i].src_mac_qual == MAC_ANY) { - 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 != MAC_NOT) { - matched_routes[num_matches] = i; - values[num_matches] = 7; - num_matches++; - } - } - } - - if ((g_routes[i].src_mac_qual == MAC_NOT) && - (memcmp((void *)&g_routes[i].src_mac, (void *)src_mac, 6) != 0)) { - if (g_routes[i].dest_mac_qual == MAC_ANY) { - 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 != MAC_NOT) { - 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 == MAC_NONE) && - ((g_routes[i].src_type == LINK_ANY) || - ((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 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)); +#ifdef CONFIG_DEBUG_VNET + char dest_str[18]; + char src_str[18]; - 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); + mac_to_string(src_mac, src_str); + mac_to_string(dst_mac, dest_str); + PrintDebug("Vnet: match_route. pkt: SRC(%s), DEST(%s)\n", src_str, dest_str); +#endif + for(i = 0; i < MAX_ROUTES; i++) { + if (vnet_state->g_routes.routes[i] != NULL){ + route = vnet_state->g_routes.routes[i]; + + if(src_type == LINK_ANY && src_index == -1) { + if ((route->dest_mac_qual == MAC_ANY) && + (route->src_mac_qual == MAC_ANY)) { + matched_routes[num_matches] = i; + num_matches++; + } - //V3_Yield(); - } -} - - - -static int indata_handler( ) -{ - if (!use_tcp) - process_udpdata(); - - return 0; -} + if (memcmp((void *)&route->src_mac, (void *)src_mac, 6) == 0) { + if (route->src_mac_qual != MAC_NOT) { + if (route->dest_mac_qual == MAC_ANY) { + matched_routes[num_matches] = i; + num_matches++; + } else if (route->dest_mac_qual != MAC_NOT && + memcmp((void *)&route->dest_mac, (void *)dst_mac, 6) == 0) { + matched_routes[num_matches] = i; + num_matches++; + } + } + } -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"); - } + if (memcmp((void *)&route->dest_mac, (void *)dst_mac, 6) == 0) { + if (route->dest_mac_qual != MAC_NOT) { + if (route->src_mac_qual == MAC_ANY) { + matched_routes[num_matches] = i; + num_matches++; + } else if ((route->src_mac_qual != MAC_NOT) && + (memcmp((void *)&route->src_mac, (void *)src_mac, 6) == 0)) { + matched_routes[num_matches] = i; + num_matches++; + } + } + } - V3_CREATE_THREAD(&indata_handler, NULL, "VNET_DATA_HANDLER"); - return 0; -} + if ((route->dest_mac_qual == MAC_NOT) && + (memcmp((void *)&route->dest_mac, (void *)dst_mac, 6) != 0)) { + if (route->src_mac_qual == MAC_ANY) { + matched_routes[num_matches] = i; + num_matches++; + } else if ((route->src_mac_qual != MAC_NOT) && + (memcmp((void *)&route->src_mac, (void *)src_mac, 6) == 0)) { + matched_routes[num_matches] = i; + num_matches++; + } + } + if ((route->src_mac_qual == MAC_NOT) && + (memcmp((void *)&route->src_mac, (void *)src_mac, 6) != 0)) { + if (route->dest_mac_qual == MAC_ANY) { + matched_routes[num_matches] = i; + num_matches++; + } else if ((route->dest_mac_qual != MAC_NOT) && + (memcmp((void *)&route->dest_mac, (void *)dst_mac, 6) == 0)) { + matched_routes[num_matches] = i; + num_matches++; + } + } + }//end if src_type == Link_any + } + }//end for -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); + PrintDebug("Vnet: match_route: Matches=%d\n", num_matches); + + for (i = 0; i < num_matches; i++) { + matches[i] = matched_routes[i]; + } + + return num_matches; } -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; +static int handle_one_pkt(struct ethernet_pkt *pkt) { + int src_link_index = -1; //the value of src_link_index of udp always is 0 char src_mac[6]; char dst_mac[6]; - - int matches[g_num_routes]; + int matches[MAX_ROUTES]; int num_matched_routes = 0; + struct in_pkt_header header; + char hash_key[HASH_KEY_SIZE]; + struct vnet_state_t *vnet_state = &g_vnet_state; + int i; - struct HEADERS headers; - // get the ethernet and ip headers from the packet - memcpy((void *)&headers, (void *)pkt->data, sizeof(headers)); + memcpy((void *)&header, (void *)pkt->data, sizeof(header)); + memcpy(src_mac, header.ethernetsrc, 6); + memcpy(dst_mac, header.ethernetdest, 6); - int j; - for (j = 0;j < 6; j++) { - src_mac[j] = headers.ethernetsrc[j]; - dst_mac[j] = headers.ethernetdest[j]; - } - - -#ifdef DEBUG +#ifdef CONFIG_DEBUG_VNET 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, LINK_EDGE, src_link_index);//link_edge -> pt->type??? - + + make_hash_key(hash_key, src_mac, dst_mac, LINK_EDGE, 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 (num_matched_routes == -1) { + num_matched_routes = match_route(src_mac, dst_mac, LINK_ANY, 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); + + if (num_matched_routes == 0) { + return -1; + } - for (i = 0; i < num_matched_routes; i++) { + for (i = 0; i < num_matched_routes; i++) {//send packet to all destinations int route_index = -1; int link_index = -1; - int dev_index = -1; - + int pkt_len = 0; + struct link_entry * link = NULL; + 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 == LINK_EDGE) { - link_index = g_routes[route_index].dest; - - if(g_links[link_index].type == UDP_TYPE) { - int size; + link_index = vnet_state->g_routes.routes[route_index]->link_idx; - - 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); + if ((link_index < 0) || (link_index > MAX_LINKS) || + (vnet_state->g_links.links[link_index] == NULL)) { + continue; + } + + link = vnet_state->g_links.links[link_index]; + pkt_len = pkt->size; + if (link->type == LINK_EDGE) { + + //apply the header in the beginning of the packet to be sent + if (link->dst_link->pro_type == UDP_TYPE) { + struct udp_link_header *hdr = &(link->dst_link->vnet_header); + struct ip_header *ip = &hdr->ip_hdr; + struct udp_header *udp = &hdr->udp_hdr; + udp->len = pkt_len + sizeof(struct udp_header); + ip->total_len = pkt_len + sizeof(struct udp_header) + sizeof(struct ip_header); + ip->cksum = ip_xsum(ip, sizeof(struct ip_header)); - 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; + int hdr_size = sizeof(struct udp_link_header); + memcpy(&pkt->ext_hdr, hdr, hdr_size); + + pkt_len += hdr_size; + if ((link->dst_link->input((uchar_t *)&pkt->ext_hdr, pkt_len, link->dst_link->private_data)) != pkt_len) { + PrintDebug("VNET: Packet not sent properly to link: %d\n", link_index); + continue; } - - 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 == LINK_INTERFACE) { - 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: Link protocol type not support\n"); + continue; + } + } else if (link->type == LINK_INTERFACE) { + if ((link->dst_dev->input(pkt->data, pkt_len, link->dst_dev->private_data)) != pkt_len) { + PrintDebug("VNET: Packet not sent properly to link: %d\n", link_index); + continue; + } } else { - PrintDebug("Vnet: Wrong Edge type\n"); + PrintDebug("Vnet: Wrong Edge type of link: %d\n", link_index); + continue; } - } - return 0; + PrintDebug("Vnet: HandleDataOverLink: Forward packet according to Route entry %d to link %d\n", route_index, link_index); + } + + return 0; } -static int send_ethernet_pkt(char * buf, int length) { - struct raw_ethernet_pkt * pt; +static int send_ethernet_pkt(uchar_t *data, int len, void *private_data) { + struct ethernet_pkt *pkt; + struct vnet_state_t *vnet_state = &g_vnet_state; - 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; - -} + pkt = (struct ethernet_pkt *)V3_Malloc(sizeof(struct ethernet_pkt)); + if(pkt == NULL){ + PrintError("VNET: Memory allocate fails\n"); + return -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); + memset(pkt, 0, sizeof(struct ethernet_pkt)); + ethernet_packet_init(pkt, data, len); + v3_enqueue(vnet_state->g_inpkt_q, (addr_t)pkt); + +#ifdef CONFIG_DEBUG_VNET + PrintDebug("VNET: send_pkt: transmitting packet: (size:%d)\n", (int)pkt->size); + print_packet((char *)data, len); +#endif + + return 0; } -static int add_device_to_table(struct vnet_if_device*device, int type) { - int i; +int v3_vnet_send_rawpkt(uchar_t * buf, + int len, + void *private_data) { + PrintDebug("VNET: In v3_vnet_send_rawpkt: pkt length %d\n", len); - 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; - } + return send_ethernet_pkt(buf, len, private_data); +} - g_last_device = i; - g_num_devices++; - - return i; - } - } - - return -1; +//sending the packet from Dom0, should remove the link header +int v3_vnet_send_udppkt(uchar_t * buf, + int len, + void *private_data) { + uint_t hdr_len = sizeof(struct udp_link_header); + + PrintDebug("VNET: In v3_vnet_send_udppkt: pkt length %d\n", len); + + return send_ethernet_pkt((uchar_t *)(buf+hdr_len), len - hdr_len, private_data); } -static int search_device(char *device_name) { +static int search_device(char * device_name) { + struct vnet_state_t *vnet_state = &g_vnet_state; int i; - for (i = 0; i < MAX_DEVICES; i++) { - if (g_devices[i].use == 1) { - if (!strcmp(device_name, g_devices[i].device->name)) { + for (i = 0; i < MAX_LINKS; i++) { + if ((vnet_state->g_links.links[i] != NULL) && (vnet_state->g_links.links[i]->type == LINK_INTERFACE)) { + if (strcmp(device_name, vnet_state->g_links.links[i]->dst_dev->name) == 0) { 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; +int vnet_register_device(struct vm_device * vdev, + char * dev_name, + uchar_t mac[6], + int (*netif_input)(uchar_t * pkt, uint_t size, void * private_data), + void * data) { + struct vnet_if_device * if_dev; - 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; + int idx = search_device(dev_name); + if (idx != -1) { + PrintDebug("VNET: register device: Already has device with the name %s\n", dev_name); + return -1; } - - if (g_last_device == index) { - g_last_device = g_devices[index].prev; + + if_dev = (struct vnet_if_device *)V3_Malloc(sizeof(struct vnet_if_device)); + if (if_dev == NULL) { + PrintError("VNET: Malloc fails\n"); + return -1; } + + strcpy(if_dev->name, dev_name); + strncpy(if_dev->mac_addr, mac, 6); + if_dev->dev = vdev; + if_dev->input = netif_input; + if_dev->private_data = data; - g_devices[index].next = -1; - g_devices[index].prev = -1; - - device = g_devices[index].device; - g_devices[index].device = NULL; + struct link_entry * link = (struct link_entry *)V3_Malloc(sizeof(struct link_entry)); + link->type = LINK_INTERFACE; + link->dst_dev = if_dev; - g_num_devices--; + idx = __add_link_entry(link); - return device; + return idx; } +int v3_vnet_pkt_process() { + struct ethernet_pkt * pkt; + struct vnet_state_t *vnet_state = &g_vnet_state; -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; + while ((pkt = (struct ethernet_pkt *)v3_dequeue(vnet_state->g_inpkt_q))!= NULL) { + if (handle_one_pkt(pkt) != -1) { + PrintDebug("VNET: vnet_check: handle one packet! pt length %d, pt type %d\n", (int)pkt->size, (int)pkt->type); + } else { + PrintDebug("VNET: vnet_check: Fail to forward one packet, discard it!\n"); + } + + V3_Free(pkt); // be careful here } return 0; } -int vnet_unregister_device(char * dev_name) { +static void vnet_state_init(struct vnet_state_t *vnet_state) { int i; - i = search_device(dev_name); - - if (i == -1) { - return -1; + /*initial links table */ + for (i = 0; i < MAX_LINKS; i++) { + vnet_state->g_links.links[i] = NULL; } - - struct vnet_if_device * device = delete_device_from_table(i); - - if (device == NULL) { - return -1; + vnet_state->g_links.size = 0; + if(v3_lock_init(&(vnet_state->g_links.lock)) == -1){ + PrintError("VNET: Failure to init lock for links table\n"); } + PrintDebug("VNET: Links table initiated\n"); - V3_Free(device); + /*initial routes table */ + for (i = 0; i < MAX_ROUTES; i++) { + vnet_state->g_routes.routes[i] = NULL; + } + vnet_state->g_routes.size = 0; + if(v3_lock_init(&(vnet_state->g_routes.lock)) == -1){ + PrintError("VNET: Failure to init lock for routes table\n"); + } + PrintDebug("VNET: Routes table initiated\n"); - return 0; + /*initial pkt receiving queue */ + vnet_state->g_inpkt_q = v3_create_queue(); + v3_init_queue(vnet_state->g_inpkt_q); + PrintDebug("VNET: Receiving queue initiated\n"); + + /*initial routing cache */ + init_route_cache(vnet_state); } -int v3_Register_pkt_event(int (*netif_input)(uchar_t * pkt, uint_t size)) { - return vnet_register_device("NE2000", netif_input, NULL); +static void free_link_mem(struct link_entry *link){ + V3_Free(link->dst_dev); + V3_Free(link); } -int v3_vnet_pkt_process() { - struct raw_ethernet_pkt * pt; - 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"); +// TODO: +static int addto_routing_link_tables(struct routing_entry *route_tab, + uint16_t num_routes, + struct link_entry *link_tab, + uint16_t num_links){ + struct routing_entry *route, *new_route; + struct link_entry *link, *new_link; + int new_idx; + int i; + int link_idxs[MAX_LINKS]; + + //add all of the links first, record their new indexs + for (i = 0; i < num_links; i++) { + link_idxs[i] = -1; + link = &link_tab[i]; + new_link = (struct link_entry *)V3_Malloc(sizeof(struct link_entry)); + + if (new_link == NULL){ + PrintError("VNET: Memory allocate error\n"); + return -1; } + + new_link->type = link->type; - V3_Free(pt); //be careful here - } - - return 0; -} + //TODO: how to set the input parameters here + if (link->type == LINK_EDGE){ + struct vnet_if_device *ifdev = (struct vnet_if_device *)V3_Malloc(sizeof(struct vnet_if_device)); -static void init_link_table() { - int i; + if (ifdev == NULL){ + PrintError("VNET: Memory allocate fails\n"); + return -1; + } + + memcpy(ifdev->name, link->dst_dev->name, DEVICE_NAME_LEN); - 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; -} + // TODO: + //ifdev->mac_addr + //ifdev->input + //ifdev->private_data -static void init_device_table() { - int i; + new_link->dst_dev = ifdev; + }else if (link->type == LINK_INTERFACE){ + struct vnet_if_link *iflink = (struct vnet_if_link *)V3_Malloc(sizeof(struct vnet_if_link)); - for (i = 0; i < MAX_DEVICES; i++) { - g_devices[i].use = 0; - g_devices[i].next = -1; - g_devices[i].prev = -1; - } + if (iflink == NULL){ + PrintError("VNET: Memory allocate fails\n"); + return -1; + } + iflink->pro_type = link->dst_link->pro_type; + iflink->dest_ip = link->dst_link->dest_ip; + iflink->dest_port = link->dst_link->dest_port; + memcpy(&iflink->vnet_header, &link->dst_link->vnet_header, sizeof(struct udp_link_header)); + + // TODO: + //iflink->input = + //iflink->private_data = + + new_link->dst_link = iflink; + }else{ + PrintDebug("VNET: invalid link type\n"); + V3_Free(new_link); + continue; + } - g_first_device = -1; - g_last_device = -1; - g_num_devices = 0; -} + new_idx = __add_link_entry(new_link); + if (new_idx < 0) { + PrintError("VNET: Adding link fails\n"); + free_link_mem(new_link); + continue; + } + link_idxs[i] = new_idx; + } -static void init_route_table() { - int i; + //add all of routes, replace with new link indexs + for (i = 0; i < num_routes; i++) { + route = &route_tab[i]; + if (route->link_idx < 0 || route->link_idx >= num_links || + ((route->src_link_idx != -1) && + (route->src_link_idx < 0 || route->src_link_idx >= num_links))){ + PrintError("VNET: There is error in the intial tables data from guest\n"); + continue; + } - for (i = 0; i < MAX_ROUTES; i++) { - g_routes[i].use = 0; - g_routes[i].next = -1; - g_routes[i].prev = -1; - } + new_route = (struct routing_entry *)V3_Malloc(sizeof(struct routing_entry)); + if (new_route == NULL){ + PrintError("VNET: Memory allocate fails\n"); + return -1; + } + memcpy(new_route, route, sizeof(struct routing_entry)); - g_first_route = -1; - g_last_route = -1; - g_num_routes = 0; -} + new_route->link_idx = link_idxs[new_route->link_idx]; + if (route->src_link_idx != -1) + new_route->src_link_idx = link_idxs[new_route->src_link_idx]; + + if((__add_route_entry(new_route)) == -1){ + PrintDebug("VNET: Adding route fails"); + V3_Free(new_route); + } + new_route = NULL; + } -static void init_tables() { - init_link_table(); - init_device_table(); - init_route_table(); - init_route_cache(); + return 0; } -static void init_pkt_queue() -{ - PrintDebug("VNET Init package receiving queue\n"); +//add the guest specified routes and links to the tables +static int handle_init_tables_hcall(struct guest_info * info, uint_t hcall_id, void * priv_data) { + struct vnet_if_link *link_array; + struct routing_entry *route_array; + addr_t routes_addr, routes_addr_gva; + addr_t links_addr, links_addr_gva; + uint16_t route_size, link_size; - g_inpkt_q = v3_create_queue(); - v3_init_queue(g_inpkt_q); -} + routes_addr_gva = (addr_t)info->vm_regs.rbx; + route_size = (uint16_t)info->vm_regs.rcx; + links_addr_gva = (addr_t)info->vm_regs.rdx; + link_size = (uint16_t)info->vm_regs.rsi; + PrintDebug("Vnet: In handle_init_tables_hcall\n"); + PrintDebug("Vnet: route_table_start: %x, route size: %d\n", (int)routes_addr_gva, route_size); + PrintDebug("Vnet: link_table_start: %x, link size: %d\n", (int)links_addr_gva, link_size); + + if (guest_va_to_host_va(info, routes_addr_gva, &routes_addr) == -1) { + PrintError("VNET: Could not translate guest address\n"); + return -1; + } + route_array = (struct routing_entry *)routes_addr; +#ifdef CONFIG_DEBUG_VNET + dump_dom0_routes(route_array, route_size); +#endif -void v3_vnet_init() { + if (guest_va_to_host_va(info, links_addr_gva, &links_addr) == -1) { + PrintError("VNET: Could not translate guest address\n"); + return -1; + } + link_array = (struct vnet_if_link *)links_addr; - PrintDebug("VNET Init: Vnet input queue successful.\n"); +#ifdef CONFIG_DEBUG_VNET + dump_dom0_links(link_array, link_size); +#endif + + +// TODO: + if (0)addto_routing_link_tables(route_array, route_size, NULL, 0); - init_tables(); + return 0; +} - init_pkt_queue(); +void v3_init_vnet() { + vnet_state_init(&g_vnet_state); - //store_topologies(udp_data_socket); + PrintDebug("VNET Initialized\n"); +} - start_recv_data(); +//only need to called in config dom0 guest +int v3_register_guest_vnet(struct guest_info *vm){ + return v3_register_hypercall(vm, + VNET_INITAB_HCALL, + handle_init_tables_hcall, + NULL); }