* 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>
#ifndef CONFIG_DEBUG_VNET
#undef PrintDebug
#define PrintDebug(fmt, args...)
#endif
-
-struct ethernet_pkt {
- uint32_t size; //size of data
- uint16_t type;
- struct udp_link_header ext_hdr; //possible externel header to applied to data before sent
- char data[ETHERNET_PACKET_LEN];
-}__attribute__((packed));
-
-
// 14 (ethernet frame) + 20 bytes
struct in_pkt_header {
uchar_t ethernetdest[6];
char ip[20];
}__attribute__((packed));
-#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 HASH_KEY_SIZE 16
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));
-static struct link_table g_links;
-static struct routing_table g_routes;
-static struct gen_queue * g_inpkt_q;
-
-/* 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;
+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 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;
return (uint16_t)~sum;
}
-static inline void ethernet_packet_init(struct ethernet_pkt *pt, uchar_t *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);
}
-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;
}
}
static void make_hash_key(route_hashkey_t hashkey,
- char src_addr[6],
- char dest_addr[6],
- char src_type,
- int src_index) {
+ 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));
}
new_entry->num_matched_routes = num_matched_r;
-
new_entry->matches = (int *)V3_Malloc(num_matched_r * sizeof(int));
if (new_entry->matches == NULL) {
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;
}
struct route_cache_entry * found = NULL;
int n_matches = -1;
int i = 0;
+ 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;
return n_matches;
}
+
#ifdef CONFIG_DEBUG_VNET
static void print_packet(uchar_t *pkt, int size) {
- PrintDebug("Vnet: print_data_packet: size: %d\n", size);
+ PrintDebug("Vnet: data_packet: size: %d\n", size);
v3_hexdump(pkt, size, NULL, 0);
}
mac[3], mac[4], mac[5]);
}
-static void dump_routes(struct routing_entry **route_tables) {
+
+static void print_route(struct routing_entry *route){
char dest_str[18];
char src_str[18];
- struct routing_entry *route = NULL;
+
+ mac_to_string(route->src_mac, src_str);
+ mac_to_string(route->dest_mac, dest_str);
+
+ 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);
+}
+
+
+static void dump_routes(struct routing_entry **route_tables) {
int i;
PrintDebug("\nVnet: route table dump start =====\n");
for(i = 0; i < MAX_ROUTES; i++) {
if (route_tables[i] != NULL){
- route = route_tables[i];
-
- mac_to_string(route->src_mac, src_str);
- mac_to_string(route->dest_mac, dest_str);
-
- PrintDebug("route: %d\n", i);
- 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);
+ print_route(route_tables[i]);
}
}
PrintDebug("\nVnet: route table dump end =====\n");
}
+static void dump_dom0_routes(struct routing_entry routes[], int size) {
+ int i;
+
+ PrintDebug("\nVnet: route table from dom0 guest =====\n");
+
+ for(i = 0; i <size; i++) {
+ print_route(&routes[i]);
+ }
+
+ PrintDebug("\nVnet: route table dom0 guest end =====\n");
+}
+
+static void dump_dom0_links(struct vnet_if_link links[], int size) {
+ struct vnet_if_link *link = NULL;
+ int i;
+
+ PrintDebug("\nVnet: link table from dom0 guest =====\n");
+
+ 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);
+ }
+
+ PrintDebug("\nVnet: link table dom0 guest end =====\n");
+}
+
#endif
static int __add_link_entry(struct link_entry * link) {
int idx;
-
+ struct vnet_state_t *vnet_state = &g_vnet_state;
+
+ v3_lock(vnet_state->g_links.lock);
for (idx = 0; idx < MAX_LINKS; idx++) {
- if (g_links.links[idx] == NULL) {
- g_links.links[idx] = link;
- g_links.size++;
-
- return idx;
+ if (vnet_state->g_links.links[idx] == NULL) {
+ vnet_state->g_links.links[idx] = link;
+ vnet_state->g_links.size++;
+ break;
}
}
+ v3_unlock(vnet_state->g_links.lock);
- PrintError("No available Link entry\n");
- return -1;
+ if (idx == MAX_LINKS) {
+ PrintDebug("VNET: No available Link entry for new link\n");
+ return -1;
+ }
+
+ return idx;
}
static int __add_route_entry(struct routing_entry * route) {
int idx;
-
+ struct vnet_state_t *vnet_state = &g_vnet_state;
+
+ v3_lock(vnet_state->g_routes.lock);
for (idx = 0; idx < MAX_ROUTES; idx++) {
- if (g_routes.routes[idx] == NULL) {
- g_routes.routes[idx] = route;
- g_routes.size++;
-
- return idx;
+ if (vnet_state->g_routes.routes[idx] == NULL) {
+ vnet_state->g_routes.routes[idx] = route;
+ vnet_state->g_routes.size++;
+ break;
}
}
+ v3_unlock(vnet_state->g_routes.lock);
- PrintError("No available route entry\n");
- return -1;
-}
+ if(idx == MAX_LINKS){
+ PrintDebug("VNET: No available route entry for new route\n");
+ return -1;
+ }
+#ifdef CONFIG_DEBUG_VNET
+ dump_routes(vnet_state->g_routes.routes);
+#endif
+
+ return idx;
+}
int vnet_add_route_entry(char src_mac[6],
char dest_mac[6],
struct routing_entry * new_route = (struct routing_entry *)V3_Malloc(sizeof(struct routing_entry));
int idx = -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);
}
}
clear_hash_cache();
-
- return idx;
-}
-
-#if 0
-static void * __delete_link_entry(int index) {
- struct link_entry * link = NULL;
- void * ret = NULL;
- link_type_t type;
-
- if ((index >= MAX_LINKS) || (g_links.links[index] == NULL)) {
- return NULL;
- }
-
- link = g_links.links[index];
- type = g_links.links[index]->type;
-
- 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;
- }
-
- g_links.links[index] = NULL;
- g_links.size--;
-
- 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 link_idx,
- link_type_t link_type,
- int src,
- link_type_t 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);
- }
-
- 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) {
- struct routing_entry * route;
-
- if ((index >= MAX_ROUTES) || (g_routes.routes[index] == NULL)) {
- PrintDebug("VNET: wrong index in delete route entry %d\n", index);
- return -1;
- }
- route = g_routes.routes[index];
- g_routes.routes[index] = NULL;
- g_routes.size--;
-
- V3_Free(route);
-
- clear_hash_cache();
-
- return 0;
+ return idx;
}
-static int vnet_delete_route_entry_by_addr(char src_mac[6],
- char dest_mac[6],
- int src_mac_qual,
- int dest_mac_qual,
- int link_idx,
- link_type_t type,
- int src,
- link_type_t src_type) {
- int index = find_route_entry(src_mac, dest_mac, src_mac_qual,
- dest_mac_qual, link_idx, type, src, src_type);
-
- if (index == -1) {
- PrintDebug("VNET: wrong in delete route entry %d\n", index);
- return -1;
- }
-
- return __delete_route_entry(index);
-}
-#endif
-
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;
- struct routing_entry *route = NULL;
#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: match_route. pkt: SRC(%s), DEST(%s)\n", src_str, dest_str);
-
- dump_routes(g_routes.routes);
#endif
for(i = 0; i < MAX_ROUTES; i++) {
- if (g_routes.routes[i] != NULL){
- route = g_routes.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) &&
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[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;
- char hash_key[hash_key_size];
-
// get the ethernet and ip headers from the packet
memcpy((void *)&header, (void *)pkt->data, sizeof(header));
memcpy(src_mac, header.ethernetsrc, 6);
#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
- // 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 in the cache
- num_matched_routes = match_route(src_mac, dst_mac, LINK_ANY, 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);
}
struct link_entry * link = NULL;
route_index = matches[i];
- link_index = g_routes.routes[route_index]->link_idx;
+ link_index = vnet_state->g_routes.routes[route_index]->link_idx;
if ((link_index < 0) || (link_index > MAX_LINKS) ||
- (g_links.links[link_index] == NULL)) {
+ (vnet_state->g_links.links[link_index] == NULL)) {
continue;
}
- link = g_links.links[link_index];
+ link = vnet_state->g_links.links[link_index];
pkt_len = pkt->size;
if (link->type == LINK_EDGE) {
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));
+ 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));
int hdr_size = sizeof(struct udp_link_header);
memcpy(&pkt->ext_hdr, hdr, hdr_size);
return 0;
}
-static int send_ethernet_pkt(uchar_t *data, int len) {
+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;
pkt = (struct ethernet_pkt *)V3_Malloc(sizeof(struct ethernet_pkt));
- memset(pkt, 0, sizeof(struct ethernet_pkt));
-
if(pkt == NULL){
PrintError("VNET: Memory allocate fails\n");
return -1;
}
-
- ethernet_packet_init(pkt, data, len); //====here we copy sending data once
-
- PrintDebug("VNET: vm_send_pkt: transmitting packet: (size:%d)\n", (int)pkt->size);
+ 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
-
- v3_enqueue(g_inpkt_q, (addr_t)pkt);
return 0;
}
-//send raw ethernet packet
-int v3_vnet_send_rawpkt(uchar_t * buf, int len, void *private_data) {
- PrintDebug("VNET: In V3_Send_pkt: pkt length %d\n", len);
+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);
- return send_ethernet_pkt(buf, len);
+ return send_ethernet_pkt(buf, len, private_data);
}
//sending the packet from Dom0, should remove the link header
-int v3_vnet_send_udppkt(uchar_t * buf, int len, void *private_data) {
- PrintDebug("VNET: In V3_Send_pkt: pkt length %d\n", len);
-
+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);
+ return send_ethernet_pkt((uchar_t *)(buf+hdr_len), len - hdr_len, private_data);
}
static int search_device(char * device_name) {
+ struct vnet_state_t *vnet_state = &g_vnet_state;
int i;
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) == 0) {
+ 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 idx;
}
-#if 0
-static int vnet_unregister_device(char * dev_name) {
- int idx;
-
- idx = search_device(dev_name);
-
- if (idx == -1) {
- PrintDebug("VNET: No device with name %s found\n", dev_name);
- return -1;
- }
-
- struct vnet_if_device * device = (struct vnet_if_device *)__delete_link_entry(idx);
- if (device == NULL) {
- PrintError("VNET: Device %s not in the link table %d, something may be wrong in link table\n", dev_name, idx);
- return -1;
- }
-
- V3_Free(device);
-
- return idx;
-}
-
-#endif
-
int v3_vnet_pkt_process() {
struct ethernet_pkt * pkt;
+ struct vnet_state_t *vnet_state = &g_vnet_state;
- while ((pkt = (struct ethernet_pkt *)v3_dequeue(g_inpkt_q)) != NULL) {
- PrintDebug("VNET: In vnet_check: pt length %d, pt type %d\n", (int)pkt->size, (int)pkt->type);
-
+ 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!\n");
+ 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");
}
return 0;
}
-static void init_empty_link_table() {
+static void vnet_state_init(struct vnet_state_t *vnet_state) {
int i;
+ /*initial links table */
for (i = 0; i < MAX_LINKS; i++) {
- g_links.links[i] = NULL;
+ vnet_state->g_links.links[i] = NULL;
}
+ 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");
- g_links.size = 0;
-}
-
-static void init_empty_route_table() {
- int i;
-
+ /*initial routes table */
for (i = 0; i < MAX_ROUTES; i++) {
- g_routes.routes[i] = NULL;
+ 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");
- g_links.size = 0;
-}
-
-static void init_tables() {
- init_empty_link_table();
- init_empty_route_table();
- init_route_cache();
-}
-
-static void init_pkt_queue() {
- PrintDebug("VNET Init package receiving queue\n");
-
- g_inpkt_q = v3_create_queue();
- v3_init_queue(g_inpkt_q);
+ /*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);
}
static void free_link_mem(struct link_entry *link){
V3_Free(link);
}
-// TODO:
+
+// TODO:
static int addto_routing_link_tables(struct routing_entry *route_tab,
uint16_t num_routes,
struct link_entry *link_tab,
}
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));
- new_route->link_idx = link_idxs[new_route->link_idx];
-
+ 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];
return 0;
}
-struct table_init_info {
- addr_t routing_table_start;
- uint16_t routing_table_size;
- addr_t link_table_start;
- uint16_t link_table_size;
-};
-
//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) {
- addr_t guest_addr = (addr_t)info->vm_regs.rcx;
- addr_t info_addr, route_addr, link_addr;
- struct table_init_info *init_info;
- struct link_entry *link_array;
- struct routing_entry *route_array;
+ 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;
- PrintDebug("Vnet: In handle_init_tables_hcall\n");
+ 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;
- if (guest_va_to_host_va(info, guest_addr, &info_addr) == -1) {
+ 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;
}
- init_info = (struct table_init_info *)info_addr;
+ route_array = (struct routing_entry *)routes_addr;
- if (guest_va_to_host_va(info, init_info->routing_table_start, &route_addr) == -1) {
- PrintError("VNET: Could not translate guest address\n");
- return -1;
- }
- route_array = (struct routing_entry *)route_addr;
+#ifdef CONFIG_DEBUG_VNET
+ dump_dom0_routes(route_array, route_size);
+#endif
- if (guest_va_to_host_va(info, init_info->link_table_start, &link_addr) == -1) {
+ 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 link_entry *)link_addr;
+ link_array = (struct vnet_if_link *)links_addr;
+
+#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);
- addto_routing_link_tables(route_array, init_info->routing_table_size, link_array, init_info->link_table_size);
-
return 0;
}
-void v3_vnet_init(struct guest_info * vm) {
- init_tables();
- init_pkt_queue();
+void v3_init_vnet() {
+ vnet_state_init(&g_vnet_state);
- v3_register_hypercall(vm, VNET_INITAB_HCALL, handle_init_tables_hcall, NULL);
-
PrintDebug("VNET Initialized\n");
}
+//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);
+}
+
