* http://www.v3vee.org
*
* Copyright (c) 2009, Lei Xia <lxia@northwestern.edu>
- * Copyright (c) 2009, Yuan Tang <ytang@northwestern.edu>
- * Copyright (c) 2009, Jack Lange <jarusl@cs.northwestern.edu>
- * Copyright (c) 2009, Peter Dinda <pdinda@northwestern.edu>
+ * Copyright (c) 2009, Yuan Tang <ytang@northwestern.edu>
* Copyright (c) 2009, The V3VEE Project <http://www.v3vee.org>
* All rights reserved.
*
* Author: Lei Xia <lxia@northwestern.edu>
* Yuan Tang <ytang@northwestern.edu>
- * Jack Lange <jarusl@cs.northwestern.edu>
- * Peter Dinda <pdinda@northwestern.edu
*
* This is free software. You are permitted to use,
* redistribute, and modify it as specified in the file "V3VEE_LICENSE".
*/
#include <palacios/vmm_vnet.h>
+#include <palacios/vmm_hypercall.h>
+#include <palacios/vm_guest_mem.h>
+#include <palacios/vmm_lock.h>
-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++) {
*(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;
}
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);
}
}
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;
}
}
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;
}
+#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);
(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++) {
}
}
-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 <size; i++) {
+ print_route(&routes[i]);
}
- g_links[index].dest = 0;
- g_links[index].type = 0;
- g_links[index].link_sock = -1;
- g_links[index].use = 0;
+ PrintDebug("\nVnet: route table dom0 guest end =====\n");
+}
- prev_i = g_links[index].prev;
- next_i = g_links[index].next;
+static void dump_dom0_links(struct vnet_if_link links[], int size) {
+ struct vnet_if_link *link = NULL;
+ int i;
- if (prev_i != -1) {
- g_links[prev_i].next = g_links[index].next;
- }
+ PrintDebug("\nVnet: link table from dom0 guest =====\n");
- if (next_i != -1) {
- g_links[next_i].prev = g_links[index].prev;
+ for(i = 0; i <size; i++) {
+ link = &links[i];
+ PrintDebug("link: %d\n", i);
+ PrintDebug("dest_ip(%ld), dst_port(%d), prot_type(%d)\n",
+ link->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");
+\r
+ /*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);
}
