*/
#include <palacios/vmm_vnet.h>
+#include <palacios/vmm_hypercall.h>
+#include <palacios/vm_guest_mem.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";
+#ifndef CONFIG_DEBUG_VNET
+#undef PrintDebug
+#define PrintDebug(fmt, args...)
+#endif
-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";
+struct ethernet_pkt {
+ uint32_t size;
+ uint16_t type;
+ char data[ETHERNET_PACKET_LEN];
+};
-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;
-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;
-
-struct raw_ethernet_pkt {
- int size;
- int type; // vm or link type: INTERFACE|EDGE
- char data[ETHERNET_PACKET_LEN];
+// 14 (ethernet frame) + 20 bytes
+struct in_pkt_header {
+ char ethernetdest[6];
+ char ethernetsrc[6];
+ unsigned char ethernettype[2]; // indicates layer 3 protocol type
+ char ip[20];
};
-//static char *vnet_version = "0.9";
-//static int vnet_server = 0;
+#define VNET_INITAB_HCALL 0xca00 // inital hypercall id
+#define MAX_LINKS 10
+#define MAX_ROUTES 10
+#define HASH_KEY_LEN 16
+#define MIN_CACHE_SIZE 100
+static const uint_t hash_key_size = 16;
-#define MAX_LINKS 1
-#define MAX_ROUTES 1
-#define MAX_DEVICES 16
+struct link_table {
+ struct link_entry *links[MAX_LINKS];
+ uint16_t size;
+};
-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 routing_table {
+ struct routing_entry *routes[MAX_ROUTES];
+ uint16_t size;
+};
-static struct routing g_routes[MAX_ROUTES];
-static int g_num_routes; //The current number of routes
-static int g_first_route;
-static int g_last_route;
+static struct link_table g_links;
+static struct routing_table g_routes;
+static struct gen_queue *g_inpkt_q;
-static struct device_list g_devices[MAX_DEVICES];
-static int g_num_devices;
-static int g_first_device;
-static int g_last_device;
+/* 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;
+};
+
+//the route cache
+static struct hashtable *g_route_cache;
static void print_packet(char *pkt, int size) {
//network connection functions
-static inline void raw_ethernet_packet_init(struct raw_ethernet_pkt * pt, const char * data, const size_t size) {
+static inline void ethernet_packet_init(struct ethernet_pkt *pt, const char *data, const size_t size)
+{
pt->size = size;
memcpy(pt->data, data, size);
}
-
-
-/* Hash key format:
- * 0-5: src_eth_addr
- * 6-11: dest_eth_addr
- * 12: src type
- * 13-16: src index
- */
-typedef char * route_hashkey_t;
-
-// This is the hash value, Format: 0: num_matched_routes, 1...n: matches[] -- TY
-struct route_cache_entry {
- int num_matched_routes;
- int * matches;
-};
-
-#define HASH_KEY_LEN 16
-#define MIN_CACHE_SIZE 100
-
-
-//Header of the route cache
-static struct hashtable * g_route_cache;
-
-static uint_t hash_from_key_fn(addr_t hashkey) {
+static uint_t hash_from_key_fn(addr_t hashkey)
+{
uint8_t * key = (uint8_t *)hashkey;
return v3_hash_buffer(key, HASH_KEY_LEN);
}
-static int hash_key_equal(addr_t key1, addr_t key2) {
+static int hash_key_equal(addr_t key1, addr_t key2)
+{
uint8_t * buf1 = (uint8_t *)key1;
uint8_t * buf2 = (uint8_t *)key2;
return (memcmp(buf1, buf2, HASH_KEY_LEN) == 0);
}
-static int init_route_cache() {
+static int init_route_cache()
+{
g_route_cache = v3_create_htable(MIN_CACHE_SIZE, &hash_from_key_fn, &hash_key_equal);
if (g_route_cache == NULL){
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;
int i;
return 0;
}
-static int clear_hash_cache() {
+static int clear_hash_cache()
+{
v3_free_htable(g_route_cache, 1, 1);
g_route_cache = v3_create_htable(MIN_CACHE_SIZE, hash_from_key_fn, hash_key_equal);
return 0;
}
-static int look_into_cache(route_hashkey_t hashkey, int * matches) {
+static int look_into_cache(route_hashkey_t hashkey, int *matches)
+{
int n_matches = -1;
int i = 0;
struct route_cache_entry * found = NULL;
return n_matches;
}
-
-
-
-static inline uint8_t hex_nybble_to_nybble(const uint8_t hexnybble) {
+static inline uint8_t hex_nybble_to_nybble(const uint8_t hexnybble)
+{
uint8_t x = toupper(hexnybble);
if (isdigit(x)) {
}
}
-static inline uint8_t hex_byte_to_byte(const uint8_t hexbyte[2]) {
+static inline uint8_t hex_byte_to_byte(const uint8_t hexbyte[2])
+{
return ((hex_nybble_to_nybble(hexbyte[0]) << 4) +
(hex_nybble_to_nybble(hexbyte[1]) & 0xf));
}
-
-static inline void string_to_mac(const char * str, uint8_t mac[6]) {
+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) {
+static inline void mac_to_string(char mac[6], char * buf)
+{
snprintf(buf, 20, "%x:%x:%x:%x:%x:%x",
mac[0], mac[1], mac[2],
mac[3], mac[4], mac[5]);
}
-#if 0
-static void ip_to_string(uint32_t addr, char * buf) {
- uint32_t addr_st;
- char * tmp_str;
+static int add_link_entry(struct link_entry *link)
+{
+ int idx;
- 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;
+ for (idx = 0; idx < MAX_LINKS; idx++) {
+ if (g_links.links[idx] == NULL) {
+ g_links.links[idx] = link;
+ g_links.size ++;
+
+ return idx;
}
}
return -1;
}
-int vnet_add_link_entry(unsigned long dest, int type, int data_port, SOCK fd) {
- int i;
+static int add_route_entry(struct routing_entry *route)
+{
+ int idx;
- for (i = 0; i < MAX_LINKS; i++) {
- if (g_links[i].use == 0) {
- g_links[i].dest = dest;
- g_links[i].type = type;
- g_links[i].link_sock = fd;
- g_links[i].remote_port = data_port;
- g_links[i].use = 1;
-
- if (g_first_link == -1) {
- g_first_link = i;
- }
-
- g_links[i].prev = g_last_link;
- g_links[i].next = -1;
+ for (idx = 0; idx < MAX_ROUTES; idx++) {
+ if (g_routes.routes[idx] == NULL) {
+ g_routes.routes[idx] = route;
+ g_routes.size ++;
- if (g_last_link != -1) {
- g_links[g_last_link].next = i;
- }
-
- g_last_link = i;
-
- g_num_links++;
-
- return i;
+ return idx;
}
}
}
-int add_sock(struct sock_list *socks, int len, int *first_sock, int *last_sock, SOCK fd) {
- int i;
-
- for (i = 0; i < len; i++) {
- if (socks[i].sock == -1) {
- socks[i].sock = fd;
-
- if (*first_sock == -1) {
- *first_sock = i;
- }
-
- socks[i].prev = *last_sock;
- socks[i].next = -1;
-
- if (*last_sock != -1) {
- socks[*last_sock].next = i;
- }
-
- *last_sock = i;
-
- return i;
- }
- }
- return -1;
-}
+int vnet_add_route_entry(char src_mac[6],
+ char dest_mac[6],
+ int src_mac_qual,
+ int dest_mac_qual,
+ int link_idx,
+ link_type_t link_type,
+ int src,
+ link_type_t src_type)
+{
+ struct routing_entry *new_route = (struct routing_entry *)V3_Malloc(sizeof(struct routing_entry));
+ memset(new_route, 0, sizeof(struct routing_entry));
-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++;
+ if ((src_mac_qual != MAC_ANY) && (src_mac_qual != MAC_NONE)) {
+ memcpy(new_route->src_mac, src_mac, 6);
+ }
- return i;
- }
+ if ((dest_mac_qual != MAC_ANY) && (dest_mac_qual != MAC_NONE)) {
+ memcpy(new_route->dest_mac, dest_mac, 6);
}
+
+ 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;
+ new_route->src_type = src_type;
+
+ int idx = -1;
+ if ((idx = add_route_entry(new_route)) == -1)
+ return -1;
clear_hash_cache();
- return -1;
-}
-
-
-static int find_link_entry(unsigned long dest, int type) {
- int i;
-
- FOREACH_LINK(i, g_links, g_first_link) {
- if ((g_links[i].dest == dest) &&
- ((type == -1) || (g_links[i].type == type)) ) {
- return i;
- }
- }
-
- return -1;
+ return idx;
}
-static int delete_link_entry(int index) {
- int next_i;
- int prev_i;
+static void * delete_link_entry(int index)
+{
+ struct link_entry *link = NULL;
+ void *ret = NULL;
+ link_type_t type;
- if (g_links[index].use == 0) {
- return -1;
+ if (index >= MAX_LINKS || g_links.links[index] == NULL) {
+ return NULL;
}
- g_links[index].dest = 0;
- g_links[index].type = 0;
- g_links[index].link_sock = -1;
- g_links[index].use = 0;
+ link = g_links.links[index];
+ type = g_links.links[index]->type;
- prev_i = g_links[index].prev;
- next_i = g_links[index].next;
+ if (type == LINK_INTERFACE)
+ ret = (void *)g_links.links[index]->dst_dev;
+ else if (type == LINK_EDGE)
+ ret = (void *)g_links.links[index]->dst_link;
- if (prev_i != -1) {
- g_links[prev_i].next = g_links[index].next;
- }
+ g_links.links[index] = NULL;
+ g_links.size --;
- if (next_i != -1) {
- g_links[next_i].prev = g_links[index].prev;
- }
-
- if (g_first_link == index) {
- g_first_link = g_links[index].next;
- }
-
- if (g_last_link == index) {
- g_last_link = g_links[index].prev;
- }
-
- g_links[index].next = -1;
- g_links[index].prev = -1;
-
- g_num_links--;
-
- return 0;
-}
-
-int vnet_delete_link_entry_by_addr(unsigned long dest, int type) {
- int index = find_link_entry(dest, type);
-
- if (index == -1) {
- return -1;
- }
-
- return delete_link_entry(index);
+ V3_Free(link);
+
+ return ret;
}
-
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 link_idx,
+ link_type_t link_type,
int src,
- int src_type) {
+ link_type_t src_type)
+{
int i;
char temp_src_mac[6];
char temp_dest_mac[6];
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;
- }
- }
+ for (i = 0; i<MAX_ROUTES; i++) {
+ if (g_routes.routes[i] != NULL) {
+ if ((memcmp(temp_src_mac, g_routes.routes[i]->src_mac, 6) == 0) &&
+ (memcmp(temp_dest_mac, g_routes.routes[i]->dest_mac, 6) == 0) &&
+ (g_routes.routes[i]->src_mac_qual == src_mac_qual) &&
+ (g_routes.routes[i]->dest_mac_qual == dest_mac_qual) &&
+ ((link_type == LINK_ANY) ||
+ ((link_type == g_routes.routes[i]->link_type) && (g_routes.routes[i]->link_idx == link_idx))) &&
+ ((src_type == LINK_ANY) ||
+ ((src_type == g_routes.routes[i]->src_type) && (g_routes.routes[i]->src_link_idx == src)))) {
+ return i;
+ }
+ }
+ }
return -1;
}
-static int delete_route_entry(int index) {
- int next_i;
- int prev_i;
-
- memset(g_routes[index].src_mac, 0, 6);
- memset(g_routes[index].dest_mac, 0, 6);
+static int delete_route_entry(int index)
+{
+ struct routing_entry *route;
- 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;
+ if (index >= MAX_ROUTES || g_routes.routes[index] == NULL)
+ return -1;
- prev_i = g_routes[index].prev;
- next_i = g_routes[index].next;
-
- if (prev_i != -1) {
- g_routes[prev_i].next = g_routes[index].next;
- }
-
- if (next_i != -1) {
- g_routes[next_i].prev = g_routes[index].prev;
- }
-
- if (g_first_route == index) {
- g_first_route = g_routes[index].next;
- }
+ route = g_routes.routes[index];
+ g_routes.routes[index] = NULL;
+ g_routes.size --;
- if (g_last_route == index) {
- g_last_route = g_routes[index].prev;
- }
+ V3_Free(route);
- g_routes[index].next = -1;
- g_routes[index].prev = -1;
-
- g_num_routes--;
-
clear_hash_cache();
return 0;
char dest_mac[6],
int src_mac_qual,
int dest_mac_qual,
- int dest,
- int type,
+ int link_idx,
+ link_type_t type,
int src,
- int src_type) {
+ link_type_t src_type)
+{
int index = find_route_entry(src_mac, dest_mac, src_mac_qual,
- dest_mac_qual, dest, type, src, src_type);
+ dest_mac_qual, link_idx, type, src, src_type);
if (index == -1) {
return -1;
}
- delete_route_entry(index);
-
- return 0;
+ return delete_route_entry(index);
}
-int delete_sock(struct sock_list * socks, int * first_sock, int * last_sock, SOCK fd) {
- int i;
- int prev_i;
- int next_i;
-
-
- FOREACH_SOCK(i, socks, (*first_sock)) {
- if (socks[i].sock == fd) {
- V3_Close_Socket(socks[i].sock);
- socks[i].sock = -1;
-
- prev_i = socks[i].prev;
- next_i = socks[i].next;
-
- if (prev_i != -1) {
- socks[prev_i].next = socks[i].next;
- }
-
- if (next_i != -1) {
- socks[next_i].prev = socks[i].prev;
- }
-
- if (*first_sock == i) {
- *first_sock = socks[i].next;
- }
-
- if (*last_sock == i) {
- *last_sock = socks[i].prev;
- }
-
- socks[i].next = -1;
- socks[i].prev = -1;
-
- return 0;
- }
- }
- return -1;
-}
-
-//setup the topology of the testing network
-static void store_topologies(SOCK fd) {
- int i;
- int src_mac_qual = 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;
- }
-
- g_links[i].prev = g_last_link;
- g_links[i].next = -1;
-
- if (g_last_link != -1) {
- g_links[g_last_link].next = i;
- }
-
- g_last_link = i;
-
- g_num_links++;
- PrintDebug("VNET: store_topologies. new link: socket: %d, remote %x:[%d]\n", g_links[i].link_sock, (uint_t)g_links[i].dest, g_links[i].remote_port);
- }
- }
-
-
- //store route table
-
- type = 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);
-
- }
- }
-}
-
-static int match_route(uint8_t * src_mac, uint8_t * dst_mac, int src_type, int src_index, int * matches) {
+static int match_route(uint8_t *src_mac, uint8_t *dst_mac, link_type_t src_type, int src_index, int *matches)
+{
int values[MAX_ROUTES];
int matched_routes[MAX_ROUTES];
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;
- }
+
+ for(i = 0; i<MAX_ROUTES; i++) {
+ if (g_routes.routes[i] != NULL){
+ if ((g_routes.routes[i]->src_type != LINK_ANY) &&
+ ((g_routes.routes[i]->src_type != src_type) ||
+ ((g_routes.routes[i]->src_link_idx != src_index) &&
+ (g_routes.routes[i]->src_link_idx != -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 ((g_routes.routes[i]->dest_mac_qual == MAC_ANY) &&
+ (g_routes.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;
+ if (memcmp((void *)&g_routes.routes[i]->src_mac, (void *)src_mac, 6) == 0) {
+ if (g_routes.routes[i]->src_mac_qual != MAC_NOT) {
+ if (g_routes.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++;
+ num_matches++;
+ } else if (memcmp((void *)&g_routes.routes[i]->dest_mac, (void *)dst_mac, 6) == 0) {
+ if (g_routes.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;
+ if (memcmp((void *)&g_routes.routes[i]->dest_mac, (void *)dst_mac, 6) == 0) {
+ if (g_routes.routes[i]->dest_mac_qual != MAC_NOT) {
+ if (g_routes.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++;
- }
+ num_matches++;
+ } else if (memcmp((void *)&g_routes.routes[i]->src_mac, (void *)src_mac, 6) == 0) {
+ if (g_routes.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.routes[i]->dest_mac_qual == MAC_NOT) &&
+ (memcmp((void *)&g_routes.routes[i]->dest_mac, (void *)dst_mac, 6) != 0)) {
+ if (g_routes.routes[i]->src_mac_qual == MAC_ANY) {
+ matched_routes[num_matches] = i;
+ values[num_matches] = 5;
+ num_matches++;
+ } else if (memcmp((void *)&g_routes.routes[i]->src_mac, (void *)src_mac, 6) == 0) {
+ if (g_routes.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++;
- }
+ if ((g_routes.routes[i]->src_mac_qual == MAC_NOT) &&
+ (memcmp((void *)&g_routes.routes[i]->src_mac, (void *)src_mac, 6) != 0)) {
+ if (g_routes.routes[i]->dest_mac_qual == MAC_ANY) {
+ matched_routes[num_matches] = i;
+ values[num_matches] = 5;
+ num_matches++;
+ } else if (memcmp((void *)&g_routes.routes[i]->dest_mac, (void *)dst_mac, 6) == 0) {
+ if (g_routes.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))))) {
+ }
+ }//end for
+
+ for(i = 0; i<MAX_ROUTES; i++) {
+ if ((memcmp((void *)&g_routes.routes[i]->src_mac, (void *)src_mac, 6) == 0) &&
+ (g_routes.routes[i]->dest_mac_qual == MAC_NONE) &&
+ ((g_routes.routes[i]->src_type == LINK_ANY) ||
+ ((g_routes.routes[i]->src_type == src_type) &&
+ ((g_routes.routes[i]->src_link_idx == src_index) ||
+ (g_routes.routes[i]->src_link_idx == -1))))) {
matched_routes[num_matches] = i;
values[num_matches] = 4;
PrintDebug("Vnet: MatchRoute: We matched a default route (%d)\n", i);
return no;
}
-
-static int process_udpdata() {
- struct raw_ethernet_pkt * pt;
+#if 0
+// TODO: To be removed
+static int process_udpdata()
+{
+ struct 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"
+ int length = sizeof(struct 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));
+ pt = (struct ethernet_pkt *)V3_Malloc(sizeof(struct ethernet_pkt));
if (pt == NULL){
PrintError("Vnet: process_udp: Malloc fails\n");
PrintDebug("Vnet: process_udp: get packet\n");
print_packet(pt->data, pt->size);
-
-
- //V3_Yield();
}
}
-
-
+// TODO: To be removed
static int indata_handler( )
{
if (!use_tcp)
return 0;
}
+// TODO: To be removed
static int start_recv_data()
{
if (use_tcp){
return 0;
}
+static void store_test_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
-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);
+ int type = UDP_TYPE;
+ int src = 0;
+ int src_type= LINK_ANY; //ANY_SRC_TYPE
+ int data_port = 22;
}
-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
+#endif
+
+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
int i;
char src_mac[6];
char dst_mac[6];
- int matches[g_num_routes];
+ int matches[MAX_ROUTES];
int num_matched_routes = 0;
- struct HEADERS headers;
+ struct in_pkt_header header;
// get the ethernet and ip headers from the packet
- memcpy((void *)&headers, (void *)pkt->data, sizeof(headers));
-
- int j;
- for (j = 0;j < 6; j++) {
- src_mac[j] = headers.ethernetsrc[j];
- dst_mac[j] = headers.ethernetdest[j];
- }
+ memcpy((void *)&header, (void *)pkt->data, sizeof(header));
+ memcpy(src_mac, header.ethernetsrc, 6);
+ memcpy(dst_mac, header.ethernetdest, 6);
-
-#ifdef DEBUG
+#ifdef CONFIG_DEBUG_VNET
char dest_str[18];
char src_str[18];
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);
+ 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);
- }
+ if (num_matched_routes > 0) {
+ add_route_to_cache(hash_key, num_matched_routes,matches);
+ }
}
PrintDebug("Vnet: HandleDataOverLink: Matches=%d\n", num_matched_routes);
for (i = 0; i < num_matched_routes; i++) {
int route_index = -1;
int link_index = -1;
- int dev_index = -1;
+ int pkt_len = 0;
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;
-
- 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 ((size = V3_SendTo_IP(g_links[link_index].link_sock, g_links[link_index].dest, g_links[link_index].remote_port, pkt->data, pkt->size)) != pkt->size) {
- PrintError("Vnet: sending by UDP Exception, %x\n", size);
- return -1;
- }
-
- PrintDebug("Vnet: HandleDataOverLink: Serializing UDP Packet to link_sock [%d], dest [%x], remote_port [%d], size [%d]\n", g_links[link_index].link_sock, (uint_t)g_links[link_index].dest, g_links[link_index].remote_port, (int)pkt->size);
-
- } else if (g_links[link_index].type == TCP_TYPE) {
-
- }
- } else if (g_routes[route_index].type == LINK_INTERFACE) {
- dev_index = g_routes[route_index].dest;
+ link_index = g_routes.routes[route_index]->link_idx;
+ if (link_index < 0 || link_index > MAX_LINKS)
+ continue;
+
+ struct link_entry *link = g_links.links[link_index];
+ if (link == NULL)
+ continue;
+
+ pkt_len = pkt->size;
+ if (g_routes.routes[route_index]->link_type == LINK_EDGE) {
+
+ // TODO: apply the header in the beginning of the packet to be sent
+ if ((link->dst_link->input(pkt->data, pkt_len, NULL)) != pkt_len)
+ return -1;
+ } else if (g_routes.routes[route_index]->link_type == LINK_INTERFACE) {
+
- 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;
- }
+ if ((link->dst_link->input(pkt->data, pkt_len, NULL)) != pkt_len)
+ return -1;
} else {
- PrintDebug("Vnet: Wrong Edge type\n");
+ PrintError("Vnet: Wrong Edge type\n");
+ return -1;
}
}
return 0;
}
-static int send_ethernet_pkt(char * buf, int length) {
- struct raw_ethernet_pkt * pt;
+static int send_ethernet_pkt(char *buf, int length)
+{
+ struct ethernet_pkt *pt;
- pt = (struct raw_ethernet_pkt *)V3_Malloc(sizeof(struct raw_ethernet_pkt));
- raw_ethernet_packet_init(pt, buf, length); //====here we copy sending data once
+ pt = (struct ethernet_pkt *)V3_Malloc(sizeof(struct ethernet_pkt));
+ ethernet_packet_init(pt, buf, length); //====here we copy sending data once
PrintDebug("VNET: vm_send_pkt: transmitting packet: (size:%d)\n", (int)pt->size);
print_packet((char *)buf, length);
v3_enqueue(g_inpkt_q, (addr_t)pt);
+
return 0;
-
}
-int v3_Send_pkt(uchar_t *buf, int length) {
+int v3_vnet_send_pkt(uchar_t *buf, int length)
+{
PrintDebug("VNET: In V3_Send_pkt: pkt length %d\n", length);
return send_ethernet_pkt((char *)buf, length);
}
-static int add_device_to_table(struct vnet_if_device*device, int type) {
- int i;
-
- for (i = 0; i < MAX_DEVICES; i++) {
- if (g_devices[i].use == 0) {
- g_devices[i].type = type;
- g_devices[i].use = 1;
-
- if (g_first_device == -1) {
- g_first_device = i;
- }
-
- g_devices[i].prev = g_last_device;
- g_devices[i].next = -1;
-
- if (g_last_device != -1) {
- g_devices[g_last_device].next = i;
- }
-
- g_last_device = i;
- g_num_devices++;
-
- return i;
- }
- }
-
- return -1;
-}
-
-static int search_device(char *device_name) {
+static int search_device(char *device_name)
+{
int i;
- for (i = 0; i < MAX_DEVICES; i++) {
- if (g_devices[i].use == 1) {
- if (!strcmp(device_name, g_devices[i].device->name)) {
+ for (i = 0; i < MAX_LINKS; i++) {
+ if (g_links.links[i] != NULL && g_links.links[i]->type == LINK_INTERFACE) {
+ if (!strcmp(device_name, g_links.links[i]->dst_dev->name)) {
return i;
}
}
return -1;
}
-static struct vnet_if_device * delete_device_from_table(int index) {
- int next_i;
- int prev_i;
- struct vnet_if_device * device = NULL;
-
- if (g_devices[index].use == 0) {
- return NULL;
- }
-
- g_devices[index].use = 0;
-
- prev_i = g_devices[index].prev;
- next_i = g_devices[index].next;
-
- if (prev_i != -1) {
- g_devices[prev_i].next = g_devices[index].next;
- }
-
- if (next_i != -1) {
- g_devices[next_i].prev = g_devices[index].prev;
- }
-
- if (g_first_device == index) {
- g_first_device = g_devices[index].next;
- }
-
- if (g_last_device == index) {
- g_last_device = g_devices[index].prev;
- }
-
- g_devices[index].next = -1;
- g_devices[index].prev = -1;
-
- device = g_devices[index].device;
- g_devices[index].device = NULL;
-
- g_num_devices--;
-
- return device;
-}
-
+int vnet_register_device(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;
-int vnet_register_device(char * dev_name, int (*netif_input)(uchar_t * pkt, uint_t size), void * data) {
- struct vnet_if_device * dev;
+ int idx = search_device(dev_name);
+ if (idx != -1)
+ return -1;
- dev = (struct vnet_if_device *)V3_Malloc(sizeof(struct vnet_if_device));
+ if_dev = (struct vnet_if_device *)V3_Malloc(sizeof(struct vnet_if_device));
- if (dev == NULL){
+ if (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;
- }
+ 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;
+
+ struct link_entry *link = (struct link_entry *)V3_Malloc(sizeof(struct link_entry));
+
+ link->type = LINK_INTERFACE;
+ link->dst_dev = if_dev;
+
+ idx = add_link_entry(link);
- return 0;
+ return idx;
}
-int vnet_unregister_device(char * dev_name) {
- int i;
+int vnet_unregister_device(char *dev_name)
+{
+ int idx;
- i = search_device(dev_name);
+ idx = search_device(dev_name);
- if (i == -1) {
+ if (idx == -1) {
return -1;
}
- struct vnet_if_device * device = delete_device_from_table(i);
-
+ struct vnet_if_device *device = (struct vnet_if_device *)delete_link_entry(idx);
if (device == NULL) {
return -1;
}
V3_Free(device);
- return 0;
-}
-
-int v3_Register_pkt_event(int (*netif_input)(uchar_t * pkt, uint_t size)) {
- return vnet_register_device("NE2000", netif_input, NULL);
+ return idx;
}
-int v3_vnet_pkt_process() {
- struct raw_ethernet_pkt * pt;
+int v3_vnet_pkt_process()
+{
+ struct ethernet_pkt *pt;
PrintDebug("VNET: In vnet_check\n");
- while ((pt = (struct raw_ethernet_pkt *)v3_dequeue(g_inpkt_q)) != NULL) {
+ while ((pt = (struct 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");
+ }else {
+ PrintError("VNET: vnet_check: fail to forward one packet, discard it!\n");
}
V3_Free(pt); //be careful here
return 0;
}
-static void init_link_table() {
- int i;
- for (i = 0; i < MAX_LINKS; i++) {
- g_links[i].use = 0;
- g_links[i].next = -1;
- g_links[i].prev = -1;
- }
-
- g_first_link = -1;
- g_last_link = -1;
- g_num_links = 0;
-}
-
-static void init_device_table() {
+static void init_empty_link_table()
+{
int i;
- for (i = 0; i < MAX_DEVICES; i++) {
- g_devices[i].use = 0;
- g_devices[i].next = -1;
- g_devices[i].prev = -1;
- }
+ for (i = 0; i < MAX_LINKS; i++)
+ g_links.links[i] = NULL;
+
- g_first_device = -1;
- g_last_device = -1;
- g_num_devices = 0;
+ g_links.size = 0;
}
-static void init_route_table() {
+static void init_empty_route_table()
+{
int i;
- for (i = 0; i < MAX_ROUTES; i++) {
- g_routes[i].use = 0;
- g_routes[i].next = -1;
- g_routes[i].prev = -1;
- }
-
- g_first_route = -1;
- g_last_route = -1;
- g_num_routes = 0;
+ for (i = 0; i < MAX_ROUTES; i++)
+ g_routes.routes[i] = NULL;
+
+ g_links.size = 0;
}
static void init_tables() {
- init_link_table();
- init_device_table();
- init_route_table();
+ init_empty_link_table();
+ init_empty_route_table();
init_route_cache();
}
v3_init_queue(g_inpkt_q);
}
+#if 0
+// TODO:
+static int init_routing_tables(struct routing_entry *route_tab, uint16_t size)
+{
+ //struct routing_entry *route;
-void v3_vnet_init() {
+ return 0;
+}
+
+
+// TODO:
+static int init_link_tables(struct link_entry *link_tab, uint16_t size)
+{
+ //struct link_entry *link;
+
+ return 0;
+}
+
+#endif
+
+struct table_init_info {
+ addr_t routing_table_start;
+ uint16_t routing_table_size;
+ addr_t link_table_start;
+ uint16_t link_table_size;
+};
- PrintDebug("VNET Init: Vnet input queue successful.\n");
+static int handle_init_tables_hcall(struct guest_info * info, uint_t hcall_id, void *priv_data)
+{
+ uint8_t *buf = NULL;
+ addr_t info_addr = (addr_t)info->vm_regs.rcx;
- init_tables();
+ if (guest_va_to_host_va(info, info_addr, (addr_t *)&(buf)) == -1) {
+ PrintError("Could not translate buffer address\n");
+ return -1;
+ }
- init_pkt_queue();
+ //struct table_init_info *init_info = (struct table_init_info *)buf;
+
+
+ return 0;
+}
+
+
+void v3_vnet_init(struct guest_info *vm)
+{
+ init_tables();
+ init_pkt_queue();
- //store_topologies(udp_data_socket);
+ v3_register_hypercall(vm, VNET_INITAB_HCALL, handle_init_tables_hcall, NULL);
+
+ //store_test_topologies(udp_data_socket);
- start_recv_data();
+ PrintDebug("VNET Initied\n");
}
