X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?p=palacios.git;a=blobdiff_plain;f=palacios%2Fsrc%2Fpalacios%2Fvmm_vnet.c;h=bf3b2c6785ad857a7f32d348993b43fb7a5a2864;hp=d68610cb6300539815dc39db60ce369edb17a84a;hb=30409ee6691f594c5d8b0a2be0769d163d4c7c1a;hpb=9cabe082ba8acd1b88e6414199b5cc544aadf826 diff --git a/palacios/src/palacios/vmm_vnet.c b/palacios/src/palacios/vmm_vnet.c index d68610c..bf3b2c6 100644 --- a/palacios/src/palacios/vmm_vnet.c +++ b/palacios/src/palacios/vmm_vnet.c @@ -34,9 +34,10 @@ struct ethernet_pkt { - uint32_t size; - uint16_t type; - char data[ETHERNET_PACKET_LEN]; + 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]; }; @@ -44,7 +45,7 @@ struct ethernet_pkt { struct in_pkt_header { char ethernetdest[6]; char ethernetsrc[6]; - unsigned char ethernettype[2]; // indicates layer 3 protocol type + unsigned char ethernettype[2]; //layer 3 protocol type char ip[20]; }; @@ -57,18 +58,18 @@ struct in_pkt_header { static const uint_t hash_key_size = 16; struct link_table { - struct link_entry *links[MAX_LINKS]; + struct link_entry * links[MAX_LINKS]; uint16_t size; }; struct routing_table { - struct routing_entry *routes[MAX_ROUTES]; + struct routing_entry * routes[MAX_ROUTES]; uint16_t size; }; static struct link_table g_links; static struct routing_table g_routes; -static struct gen_queue *g_inpkt_q; +static struct gen_queue * g_inpkt_q; /* Hash key format: * 0-5: src_eth_addr @@ -76,7 +77,7 @@ static struct gen_queue *g_inpkt_q; * 12: src type * 13-16: src index */ -typedef char *route_hashkey_t; +typedef char * route_hashkey_t; // This is the hash value, Format: 0: num_matched_routes, 1...n: matches[] -- TY struct route_cache_entry { @@ -84,17 +85,17 @@ struct route_cache_entry { int * matches; }; -//the route cache -static struct hashtable *g_route_cache; +// the route cache +static struct hashtable * g_route_cache; -static void print_packet(char *pkt, int size) { +static void print_packet(uchar_t *pkt, int size) { PrintDebug("Vnet: print_data_packet: size: %d\n", size); v3_hexdump(pkt, size, NULL, 0); } #if 0 -static void print_packet_addr(char *pkt) { +static void print_packet_addr(char * pkt) { PrintDebug("Vnet: print_packet_destination_addr: "); v3_hexdump(pkt + 8, 6, NULL, 0); @@ -102,38 +103,52 @@ static void print_packet_addr(char *pkt) { v3_hexdump(pkt + 14, 6, NULL, 0); } -static void print_device_addr(char *ethaddr) { +static void print_device_addr(char * ethaddr) { PrintDebug("Vnet: print_device_addr: "); v3_hexdump(ethaddr, 6, NULL, 0); } #endif +static uint16_t ip_xsum(struct ip_header *ip_hdr, int hdr_len){ + long sum = 0; -//network connection functions -static inline void ethernet_packet_init(struct ethernet_pkt *pt, const char *data, const size_t size) -{ + 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); + + return (uint16_t)~sum; +} + +static inline void ethernet_packet_init(struct ethernet_pkt *pt, uchar_t *data, const size_t size) { pt->size = size; memcpy(pt->data, data, size); } -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){ + if (g_route_cache == NULL) { PrintError("Vnet: Route Cache Initiate Failurely\n"); return -1; } @@ -142,11 +157,10 @@ static int init_route_cache() } 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++) { @@ -159,13 +173,12 @@ static void make_hash_key(route_hashkey_t hashkey, *(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; 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; } @@ -174,7 +187,7 @@ static int add_route_to_cache(route_hashkey_t hashkey, int num_matched_r, int *m 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; } @@ -183,8 +196,8 @@ static int add_route_to_cache(route_hashkey_t hashkey, int num_matched_r, int *m 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){ + // here, when v3_htable_insert return 0, it means insert fails + if (v3_htable_insert(g_route_cache, (addr_t)hashkey, (addr_t)new_entry) == 0) { PrintError("Vnet: Insert new route entry to cache failed\n"); V3_Free(new_entry->matches); V3_Free(new_entry); @@ -193,13 +206,12 @@ static int add_route_to_cache(route_hashkey_t hashkey, int num_matched_r, int *m 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); - if (g_route_cache == NULL){ + if (g_route_cache == NULL) { PrintError("Vnet: Route Cache Create Failurely\n"); return -1; } @@ -207,11 +219,10 @@ static int clear_hash_cache() return 0; } -static int look_into_cache(route_hashkey_t hashkey, int *matches) -{ +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; found = (struct route_cache_entry *)v3_htable_search(g_route_cache, (addr_t)hashkey); @@ -226,8 +237,8 @@ static int look_into_cache(route_hashkey_t hashkey, int *matches) return n_matches; } -static inline uint8_t hex_nybble_to_nybble(const uint8_t hexnybble) -{ +#ifdef CONFIG_DEBUG_VNET +static inline uint8_t hex_nybble_to_nybble(const uint8_t hexnybble) { uint8_t x = toupper(hexnybble); if (isdigit(x)) { @@ -237,14 +248,12 @@ static inline uint8_t hex_nybble_to_nybble(const uint8_t hexnybble) } } -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++) { @@ -252,56 +261,56 @@ static inline void string_to_mac(const char *str, uint8_t mac[6]) } } -static inline void mac_to_string(char 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]); } +#endif -static int add_link_entry(struct link_entry *link) -{ +static int __add_link_entry(struct link_entry * link) { int idx; for (idx = 0; idx < MAX_LINKS; idx++) { if (g_links.links[idx] == NULL) { g_links.links[idx] = link; - g_links.size ++; + g_links.size++; return idx; } } - + + PrintError("No available Link entry\n"); return -1; } -static int add_route_entry(struct routing_entry *route) -{ +static int __add_route_entry(struct routing_entry * route) { int idx; for (idx = 0; idx < MAX_ROUTES; idx++) { if (g_routes.routes[idx] == NULL) { g_routes.routes[idx] = route; - g_routes.size ++; + g_routes.size++; return idx; } } - + + PrintError("No available route entry\n"); 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)); +static 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)); + int idx = -1; memset(new_route, 0, sizeof(struct routing_entry)); @@ -320,35 +329,36 @@ int vnet_add_route_entry(char src_mac[6], new_route->src_link_idx = src; new_route->src_type = src_type; - int idx = -1; - if ((idx = add_route_entry(new_route)) == -1) + if ((idx = __add_route_entry(new_route)) == -1) { + PrintError("Could not add route entry\n"); return -1; + } clear_hash_cache(); return idx; } -static void * delete_link_entry(int index) -{ - struct link_entry *link = NULL; - void *ret = NULL; +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) { + 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) + if (type == LINK_INTERFACE) { ret = (void *)g_links.links[index]->dst_dev; - else if (type == LINK_EDGE) + } else if (type == LINK_EDGE) { ret = (void *)g_links.links[index]->dst_link; + } g_links.links[index] = NULL; - g_links.size --; + g_links.size--; V3_Free(link); @@ -362,8 +372,7 @@ static int find_route_entry(char src_mac[6], int link_idx, link_type_t link_type, int src, - link_type_t src_type) -{ + link_type_t src_type) { int i; char temp_src_mac[6]; char temp_dest_mac[6]; @@ -380,16 +389,16 @@ static int find_route_entry(char src_mac[6], memset(temp_dest_mac, 0, 6); } - for (i = 0; isrc_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)))) { + (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; } } @@ -398,16 +407,17 @@ static int find_route_entry(char src_mac[6], return -1; } -static int delete_route_entry(int index) -{ - struct routing_entry *route; +static int __delete_route_entry(int index) { + struct routing_entry * route; - if (index >= MAX_ROUTES || g_routes.routes[index] == NULL) - return -1; + 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 --; + g_routes.size--; V3_Free(route); @@ -416,27 +426,30 @@ static int delete_route_entry(int index) return 0; } -int vnet_delete_route_entry_by_addr(char src_mac[6], - char dest_mac[6], - int src_mac_qual, - int dest_mac_qual, - int link_idx, - link_type_t type, - int src, - link_type_t src_type) -{ +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); + return __delete_route_entry(index); } -static int match_route(uint8_t *src_mac, uint8_t *dst_mac, link_type_t 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]; @@ -446,21 +459,22 @@ static int match_route(uint8_t *src_mac, uint8_t *dst_mac, link_type_t src_type, int no = 0; int exact_match = 0; - for(i = 0; isrc_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)))) { + 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.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 ( (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.routes[i]->src_mac, (void *)src_mac, 6) == 0) { @@ -468,14 +482,14 @@ static int match_route(uint8_t *src_mac, uint8_t *dst_mac, link_type_t src_type, 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.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++; + matched_routes[num_matches] = i; + values[num_matches] = 8; + exact_match = 1; + num_matches++; } } } @@ -486,7 +500,7 @@ static int match_route(uint8_t *src_mac, uint8_t *dst_mac, link_type_t src_type, 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.routes[i]->src_mac, (void *)src_mac, 6) == 0) { if (g_routes.routes[i]->src_mac_qual != MAC_NOT) { @@ -500,45 +514,45 @@ static int match_route(uint8_t *src_mac, uint8_t *dst_mac, link_type_t src_type, } } - 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]->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++; + 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.routes[i]->src_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++; - } - } + + 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 for + } // end for - for(i = 0; isrc_mac, (void *)src_mac, 6) == 0) && + 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))))) { + ( (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); @@ -566,102 +580,7 @@ static int match_route(uint8_t *src_mac, uint8_t *dst_mac, link_type_t src_type, return no; } -#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 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 ethernet_pkt *)V3_Malloc(sizeof(struct ethernet_pkt)); - - if (pt == NULL){ - PrintError("Vnet: process_udp: Malloc fails\n"); - continue; - } - - PrintDebug("Vnet: route_thread: socket: [%d]. ready to receive from ip [%x], port [%d] or from VMs\n", link_sock, (uint_t)dest, remote_port); - pt->size = V3_RecvFrom_IP( link_sock, dest, remote_port, pt->data, length); - PrintDebug("Vnet: route_thread: socket: [%d] receive from ip [%x], port [%d]\n", link_sock, (uint_t)dest, remote_port); - - if (pt->size <= 0) { - PrintDebug("Vnet: process_udp: receiving packet from UDP fails\n"); - V3_Free(pt); - return -1; - } - - PrintDebug("Vnet: process_udp: get packet\n"); - print_packet(pt->data, pt->size); - } -} - -// TODO: To be removed -static int indata_handler( ) -{ - if (!use_tcp) - process_udpdata(); - - return 0; -} - -// TODO: To be removed -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"); - } - - V3_CREATE_THREAD(&indata_handler, NULL, "VNET_DATA_HANDLER"); - 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 - - int type = UDP_TYPE; - int src = 0; - int src_type= LINK_ANY; //ANY_SRC_TYPE - int data_port = 22; -} - -#endif - -static int handle_one_pkt(struct ethernet_pkt * pkt) -{ +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]; @@ -671,6 +590,8 @@ static int handle_one_pkt(struct ethernet_pkt * pkt) int num_matched_routes = 0; struct in_pkt_header header; + + char hash_key[hash_key_size]; // get the ethernet and ip headers from the packet memcpy((void *)&header, (void *)pkt->data, sizeof(header)); @@ -686,111 +607,148 @@ static int handle_one_pkt(struct ethernet_pkt * pkt) 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??? + + // 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 + 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); - if (num_matched_routes > 0) { + 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++) { + for (i = 0; i < num_matched_routes; i++) {//send packet to all destinations int route_index = -1; int link_index = -1; - int pkt_len = 0; - + 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); + + link_index = g_routes.routes[route_index]->link_idx; - link_index = g_routes.routes[route_index]->link_idx; - if (link_index < 0 || link_index > MAX_LINKS) + if ((link_index < 0) || + (link_index > MAX_LINKS) || + (g_links.links[link_index] == NULL)) { continue; - - struct link_entry *link = g_links.links[link_index]; - if (link == NULL) - continue; - - pkt_len = pkt->size; + } + + link = g_links.links[link_index]; + 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; + //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)); + + 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\n"); + return -1; + } + }else { + PrintDebug("VNET: Link protocol type not support\n"); + return -1; + } } else if (g_routes.routes[route_index]->link_type == LINK_INTERFACE) { - - - if ((link->dst_link->input(pkt->data, pkt_len, NULL)) != pkt_len) - return -1; + if ((link->dst_dev->input(pkt->data, pkt_len, link->dst_dev->private_data)) != pkt_len) { + PrintDebug("VNET: Packet not sent properly\n"); + return -1; + } } else { - PrintError("Vnet: Wrong Edge type\n"); - return -1; + PrintDebug("Vnet: Wrong Edge type\n"); + return -1; } } - - return 0; + + return 0; } -static int send_ethernet_pkt(char *buf, int length) -{ - struct ethernet_pkt *pt; +static int send_ethernet_pkt(uchar_t *data, int len) { + struct ethernet_pkt *pkt; - pt = (struct ethernet_pkt *)V3_Malloc(sizeof(struct ethernet_pkt)); - ethernet_packet_init(pt, buf, length); //====here we copy sending data once + 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; + } - PrintDebug("VNET: vm_send_pkt: transmitting packet: (size:%d)\n", (int)pt->size); - print_packet((char *)buf, length); + ethernet_packet_init(pkt, data, len); //====here we copy sending data once - v3_enqueue(g_inpkt_q, (addr_t)pt); + PrintDebug("VNET: vm_send_pkt: transmitting packet: (size:%d)\n", (int)pkt->size); + print_packet((char *)data, len); + + v3_enqueue(g_inpkt_q, (addr_t)pkt); - return 0; + return 0; } -int v3_vnet_send_pkt(uchar_t *buf, int length) -{ - PrintDebug("VNET: In V3_Send_pkt: pkt length %d\n", length); +//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); - return send_ethernet_pkt((char *)buf, length); + return send_ethernet_pkt(buf, len); +} + +//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); + + uint_t hdr_len = sizeof(struct udp_link_header); + + return send_ethernet_pkt((uchar_t *)(buf+hdr_len), len - hdr_len); } -static int search_device(char *device_name) -{ +static int search_device(char * device_name) { 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)) { + 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) { return i; } } } - + return -1; } -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(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 idx = search_device(dev_name); - if (idx != -1) + + if (idx != -1) { + PrintDebug("VNET: register device: Already has device with the name %s\n", dev_name); return -1; + } - if_dev = (struct vnet_if_device *)V3_Malloc(sizeof(struct vnet_if_device)); + if_dev = (struct vnet_if_device *)(sizeof(struct vnet_if_device)); - if (if_dev == NULL){ + if (if_dev == NULL) { PrintError("VNET: Malloc fails\n"); return -1; } @@ -801,28 +759,32 @@ int vnet_register_device(struct vm_device *vdev, if_dev->input = netif_input; if_dev->private_data = data; - struct link_entry *link = (struct link_entry *)V3_Malloc(sizeof(struct link_entry)); + struct link_entry * link = (struct link_entry *)(sizeof(struct link_entry)); link->type = LINK_INTERFACE; link->dst_dev = if_dev; - idx = add_link_entry(link); + idx = __add_link_entry(link); + + PrintDebug("VNET: Add device %s to link table, idx %d", dev_name, idx); return idx; } -int vnet_unregister_device(char *dev_name) -{ +#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); + 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; } @@ -831,46 +793,46 @@ int vnet_unregister_device(char *dev_name) return idx; } -int v3_vnet_pkt_process() -{ - struct ethernet_pkt *pt; +#endif + +int v3_vnet_pkt_process() { + struct ethernet_pkt * pkt; PrintDebug("VNET: In vnet_check\n"); - 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); + 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); + v3_hexdump(pkt->data, pkt->size, NULL, 0); - if(handle_one_pkt(pt)) { + if (handle_one_pkt(pkt)) { PrintDebug("VNET: vnet_check: handle one packet!\n"); - }else { + } else { PrintError("VNET: vnet_check: fail to forward one packet, discard it!\n"); } - V3_Free(pt); //be careful here + V3_Free(pkt); // be careful here } return 0; } -static void init_empty_link_table() -{ +static void init_empty_link_table() { int i; - for (i = 0; i < MAX_LINKS; i++) + for (i = 0; i < MAX_LINKS; i++) { g_links.links[i] = NULL; + } - g_links.size = 0; } -static void init_empty_route_table() -{ +static void init_empty_route_table() { int i; - for (i = 0; i < MAX_ROUTES; i++) + for (i = 0; i < MAX_ROUTES; i++) { g_routes.routes[i] = NULL; + } g_links.size = 0; } @@ -881,35 +843,125 @@ static void init_tables() { init_route_cache(); } -static void init_pkt_queue() -{ +static void init_pkt_queue() { PrintDebug("VNET Init package receiving queue\n"); g_inpkt_q = v3_create_queue(); 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; +static void free_link_mem(struct link_entry *link){ + V3_Free(link->dst_dev); + V3_Free(link); +} +// 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]; - return 0; -} + //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; + + //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)); + + if (ifdev == NULL){ + PrintError("VNET: Memory allocate fails\n"); + return -1; + } + + memcpy(ifdev->name, link->dst_dev->name, DEVICE_NAME_LEN); + + // TODO: + //ifdev->mac_addr + //ifdev->input + //ifdev->private_data + + 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)); + + 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; + } + + 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; + } + + //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; + } + + 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]; + + 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; + } -// 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; @@ -917,33 +969,46 @@ struct table_init_info { uint16_t link_table_size; }; -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; +//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; - if (guest_va_to_host_va(info, info_addr, (addr_t *)&(buf)) == -1) { - PrintError("Could not translate buffer address\n"); + if (guest_va_to_host_va(info, guest_addr, &info_addr) == -1) { + PrintError("VNET: Could not translate guest address\n"); return -1; } - //struct table_init_info *init_info = (struct table_init_info *)buf; - + init_info = (struct table_init_info *)info_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; + + if (guest_va_to_host_va(info, init_info->link_table_start, &link_addr) == -1) { + PrintError("VNET: Could not translate guest address\n"); + return -1; + } + link_array = (struct link_entry *)link_addr; + + 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) -{ +void v3_vnet_init(struct guest_info * vm) { init_tables(); init_pkt_queue(); v3_register_hypercall(vm, VNET_INITAB_HCALL, handle_init_tables_hcall, NULL); - //store_test_topologies(udp_data_socket); - - PrintDebug("VNET Initied\n"); + PrintDebug("VNET Initialized\n"); }