Changes in uspace/srv/net/il/arp/arp.c [af7638e:a852181] in mainline
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uspace/srv/net/il/arp/arp.c (modified) (21 diffs)
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uspace/srv/net/il/arp/arp.c
raf7638e ra852181 28 28 29 29 /** @addtogroup arp 30 * @{30 * @{ 31 31 */ 32 32 33 33 /** @file 34 * ARP module implementation. 35 * @see arp.h 36 */ 34 * ARP module implementation. 35 * @see arp.h 36 */ 37 38 #include "arp.h" 39 #include "arp_header.h" 40 #include "arp_oc.h" 41 #include "arp_module.h" 37 42 38 43 #include <async.h> … … 43 48 #include <str.h> 44 49 #include <task.h> 50 #include <adt/measured_strings.h> 45 51 #include <ipc/ipc.h> 46 52 #include <ipc/services.h> … … 49 55 #include <ipc/il.h> 50 56 #include <byteorder.h> 51 #include <err .h>57 #include <errno.h> 52 58 53 59 #include <net/modules.h> 54 60 #include <net/device.h> 55 #include <arp_interface.h> 61 #include <net/packet.h> 62 56 63 #include <nil_interface.h> 57 64 #include <protocol_map.h> 58 #include <adt/measured_strings.h>59 #include <net/packet.h>60 65 #include <packet_client.h> 61 66 #include <packet_remote.h> … … 63 68 #include <il_local.h> 64 69 65 #include "arp.h" 66 #include "arp_header.h" 67 #include "arp_oc.h" 68 #include "arp_module.h" 69 70 71 /** ARP module name. 72 */ 70 71 /** ARP module name. */ 73 72 #define NAME "arp" 74 73 75 /** ARP global data. 76 */ 77 arp_globals_t arp_globals; 74 /** ARP global data. */ 75 arp_globals_t arp_globals; 76 77 DEVICE_MAP_IMPLEMENT(arp_cache, arp_device_t); 78 INT_MAP_IMPLEMENT(arp_protos, arp_proto_t); 79 GENERIC_CHAR_MAP_IMPLEMENT(arp_addr, measured_string_t); 78 80 79 81 /** Clears the device specific data. 80 * @param[in] device The device specific data. 81 */ 82 void arp_clear_device(arp_device_ref device); 83 84 /** Creates new protocol specific data. 85 * Allocates and returns the needed memory block as the proto parameter. 86 * @param[out] proto The allocated protocol specific data. 87 * @param[in] service The protocol module service. 88 * @param[in] address The actual protocol device address. 89 * @returns EOK on success. 90 * @returns ENOMEM if there is not enough memory left. 91 */ 92 int arp_proto_create(arp_proto_ref * proto, services_t service, measured_string_ref address); 93 94 /** @name Message processing functions 95 */ 96 /*@{*/ 97 98 /** Registers the device. 99 * Creates new device entry in the cache or updates the protocol address if the device with the device identifier and the driver service exists. 100 * @param[in] device_id The device identifier. 101 * @param[in] service The device driver service. 102 * @param[in] protocol The protocol service. 103 * @param[in] address The actual device protocol address. 104 * @returns EOK on success. 105 * @returns EEXIST if another device with the same device identifier and different driver service exists. 106 * @returns ENOMEM if there is not enough memory left. 107 * @returns Other error codes as defined for the measured_strings_return() function. 108 */ 109 int arp_device_message(device_id_t device_id, services_t service, services_t protocol, measured_string_ref address); 110 111 /** Updates the device content length according to the new MTU value. 112 * @param[in] device_id The device identifier. 113 * @param[in] mtu The new mtu value. 114 * @returns ENOENT if device is not found. 115 * @returns EOK on success. 116 */ 117 int arp_mtu_changed_message(device_id_t device_id, size_t mtu); 118 119 /** Processes the received ARP packet. 120 * Updates the source hardware address if the source entry exists or the packet is targeted to my protocol address. 121 * Responses to the ARP request if the packet is the ARP request and is targeted to my address. 122 * @param[in] device_id The source device identifier. 123 * @param[in,out] packet The received packet. 124 * @returns EOK on success and the packet is no longer needed. 125 * @returns 1 on success and the packet has been reused. 126 * @returns EINVAL if the packet is too small to carry an ARP packet. 127 * @returns EINVAL if the received address lengths differs from the registered values. 128 * @returns ENOENT if the device is not found in the cache. 129 * @returns ENOENT if the protocol for the device is not found in the cache. 130 * @returns ENOMEM if there is not enough memory left. 131 */ 132 int arp_receive_message(device_id_t device_id, packet_t packet); 133 134 /** Returns the hardware address for the given protocol address. 135 * Sends the ARP request packet if the hardware address is not found in the cache. 136 * @param[in] device_id The device identifier. 137 * @param[in] protocol The protocol service. 138 * @param[in] target The target protocol address. 139 * @returns The hardware address of the target. 140 * @returns NULL if the target parameter is NULL. 141 * @returns NULL if the device is not found. 142 * @returns NULL if the device packet is too small to send a request. 143 * @returns NULL if the hardware address is not found in the cache. 144 */ 145 measured_string_ref arp_translate_message(device_id_t device_id, services_t protocol, measured_string_ref target); 146 147 /*@}*/ 148 149 DEVICE_MAP_IMPLEMENT(arp_cache, arp_device_t) 150 151 INT_MAP_IMPLEMENT(arp_protos, arp_proto_t) 152 153 GENERIC_CHAR_MAP_IMPLEMENT(arp_addr, measured_string_t) 154 155 int arp_clean_cache_req(int arp_phone){ 82 * 83 * @param[in] device The device specific data. 84 */ 85 static void arp_clear_device(arp_device_ref device) 86 { 87 int count; 88 arp_proto_ref proto; 89 90 for (count = arp_protos_count(&device->protos) - 1; count >= 0; 91 count--) { 92 proto = arp_protos_get_index(&device->protos, count); 93 if (proto) { 94 if (proto->addr) 95 free(proto->addr); 96 if (proto->addr_data) 97 free(proto->addr_data); 98 arp_addr_destroy(&proto->addresses); 99 } 100 } 101 arp_protos_clear(&device->protos); 102 } 103 104 static int arp_clean_cache_req(int arp_phone) 105 { 156 106 int count; 157 107 arp_device_ref device; 158 108 159 109 fibril_rwlock_write_lock(&arp_globals.lock); 160 for(count = arp_cache_count(&arp_globals.cache) - 1; count >= 0; -- count){ 110 for (count = arp_cache_count(&arp_globals.cache) - 1; count >= 0; 111 count--) { 161 112 device = arp_cache_get_index(&arp_globals.cache, count); 162 if (device){113 if (device) { 163 114 arp_clear_device(device); 164 if (device->addr_data){115 if (device->addr_data) 165 116 free(device->addr_data); 166 } 167 if(device->broadcast_data){ 117 if (device->broadcast_data) 168 118 free(device->broadcast_data); 169 }170 119 } 171 120 } … … 176 125 } 177 126 178 int arp_clear_address_req(int arp_phone, device_id_t device_id, services_t protocol, measured_string_ref address){ 127 static int 128 arp_clear_address_req(int arp_phone, device_id_t device_id, services_t protocol, 129 measured_string_ref address) 130 { 179 131 arp_device_ref device; 180 132 arp_proto_ref proto; … … 182 134 fibril_rwlock_write_lock(&arp_globals.lock); 183 135 device = arp_cache_find(&arp_globals.cache, device_id); 184 if (! device){136 if (!device) { 185 137 fibril_rwlock_write_unlock(&arp_globals.lock); 186 138 return ENOENT; 187 139 } 188 140 proto = arp_protos_find(&device->protos, protocol); 189 if (! proto){141 if (!proto) { 190 142 fibril_rwlock_write_unlock(&arp_globals.lock); 191 143 return ENOENT; … … 196 148 } 197 149 198 void arp_clear_device(arp_device_ref device){ 199 int count; 200 arp_proto_ref proto; 201 202 for(count = arp_protos_count(&device->protos) - 1; count >= 0; -- count){ 203 proto = arp_protos_get_index(&device->protos, count); 204 if(proto){ 205 if(proto->addr){ 206 free(proto->addr); 207 } 208 if(proto->addr_data){ 209 free(proto->addr_data); 210 } 211 arp_addr_destroy(&proto->addresses); 212 } 213 } 214 arp_protos_clear(&device->protos); 215 } 216 217 int arp_clear_device_req(int arp_phone, device_id_t device_id){ 150 151 static int arp_clear_device_req(int arp_phone, device_id_t device_id) 152 { 218 153 arp_device_ref device; 219 154 220 155 fibril_rwlock_write_lock(&arp_globals.lock); 221 156 device = arp_cache_find(&arp_globals.cache, device_id); 222 if (! device){157 if (!device) { 223 158 fibril_rwlock_write_unlock(&arp_globals.lock); 224 159 return ENOENT; … … 230 165 } 231 166 232 int arp_device_message(device_id_t device_id, services_t service, services_t protocol, measured_string_ref address){ 233 ERROR_DECLARE; 234 167 /** Creates new protocol specific data. 168 * 169 * Allocates and returns the needed memory block as the proto parameter. 170 * 171 * @param[out] proto The allocated protocol specific data. 172 * @param[in] service The protocol module service. 173 * @param[in] address The actual protocol device address. 174 * @returns EOK on success. 175 * @returns ENOMEM if there is not enough memory left. 176 */ 177 static int 178 arp_proto_create(arp_proto_ref *proto, services_t service, 179 measured_string_ref address) 180 { 181 int rc; 182 183 *proto = (arp_proto_ref) malloc(sizeof(arp_proto_t)); 184 if (!*proto) 185 return ENOMEM; 186 187 (*proto)->service = service; 188 (*proto)->addr = address; 189 (*proto)->addr_data = address->value; 190 191 rc = arp_addr_initialize(&(*proto)->addresses); 192 if (rc != EOK) { 193 free(*proto); 194 return rc; 195 } 196 197 return EOK; 198 } 199 200 /** Registers the device. 201 * 202 * Creates new device entry in the cache or updates the protocol address if the 203 * device with the device identifier and the driver service exists. 204 * 205 * @param[in] device_id The device identifier. 206 * @param[in] service The device driver service. 207 * @param[in] protocol The protocol service. 208 * @param[in] address The actual device protocol address. 209 * @returns EOK on success. 210 * @returns EEXIST if another device with the same device identifier 211 * and different driver service exists. 212 * @returns ENOMEM if there is not enough memory left. 213 * @returns Other error codes as defined for the 214 * measured_strings_return() function. 215 */ 216 static int 217 arp_device_message(device_id_t device_id, services_t service, 218 services_t protocol, measured_string_ref address) 219 { 235 220 arp_device_ref device; 236 221 arp_proto_ref proto; 222 hw_type_t hardware; 237 223 int index; 238 hw_type_t hardware;224 int rc; 239 225 240 226 fibril_rwlock_write_lock(&arp_globals.lock); 241 227 // an existing device? 242 228 device = arp_cache_find(&arp_globals.cache, device_id); 243 if (device){244 if (device->service != service){229 if (device) { 230 if (device->service != service) { 245 231 printf("Device %d already exists\n", device->device_id); 246 232 fibril_rwlock_write_unlock(&arp_globals.lock); … … 248 234 } 249 235 proto = arp_protos_find(&device->protos, protocol); 250 if (proto){236 if (proto) { 251 237 free(proto->addr); 252 238 free(proto->addr_data); 253 239 proto->addr = address; 254 240 proto->addr_data = address->value; 255 }else{ 256 if(ERROR_OCCURRED(arp_proto_create(&proto, protocol, address))){ 241 } else { 242 rc = arp_proto_create(&proto, protocol, address); 243 if (rc != EOK) { 257 244 fibril_rwlock_write_unlock(&arp_globals.lock); 258 return ERROR_CODE;245 return rc; 259 246 } 260 index = arp_protos_add(&device->protos, proto->service, proto); 261 if(index < 0){ 247 index = arp_protos_add(&device->protos, proto->service, 248 proto); 249 if (index < 0) { 262 250 fibril_rwlock_write_unlock(&arp_globals.lock); 263 251 free(proto); 264 252 return index; 265 253 } 266 printf("New protocol added:\n\tdevice id\t= %d\n\tproto\t= %d", device_id, protocol); 267 } 268 }else{ 254 printf("New protocol added:\n\tdevice id\t= " 255 "%d\n\tproto\t= %d", device_id, protocol); 256 } 257 } else { 269 258 hardware = hardware_map(service); 270 if (! hardware){259 if (!hardware) 271 260 return ENOENT; 272 }261 273 262 // create a new device 274 263 device = (arp_device_ref) malloc(sizeof(arp_device_t)); 275 if (! device){264 if (!device) { 276 265 fibril_rwlock_write_unlock(&arp_globals.lock); 277 266 return ENOMEM; … … 279 268 device->hardware = hardware; 280 269 device->device_id = device_id; 281 if(ERROR_OCCURRED(arp_protos_initialize(&device->protos))282 || ERROR_OCCURRED(arp_proto_create(&proto, protocol, address))){270 rc = arp_protos_initialize(&device->protos); 271 if (rc != EOK) { 283 272 fibril_rwlock_write_unlock(&arp_globals.lock); 284 273 free(device); 285 return ERROR_CODE; 274 return rc; 275 } 276 rc = arp_proto_create(&proto, protocol, address); 277 if (rc != EOK) { 278 fibril_rwlock_write_unlock(&arp_globals.lock); 279 free(device); 280 return rc; 286 281 } 287 282 index = arp_protos_add(&device->protos, proto->service, proto); 288 if (index < 0){283 if (index < 0) { 289 284 fibril_rwlock_write_unlock(&arp_globals.lock); 290 285 arp_protos_destroy(&device->protos); … … 293 288 } 294 289 device->service = service; 290 295 291 // bind the new one 296 device->phone = nil_bind_service(device->service, (ipcarg_t) device->device_id, SERVICE_ARP, arp_globals.client_connection); 297 if(device->phone < 0){ 292 device->phone = nil_bind_service(device->service, 293 (ipcarg_t) device->device_id, SERVICE_ARP, 294 arp_globals.client_connection); 295 if (device->phone < 0) { 298 296 fibril_rwlock_write_unlock(&arp_globals.lock); 299 297 arp_protos_destroy(&device->protos); … … 301 299 return EREFUSED; 302 300 } 301 303 302 // get packet dimensions 304 if(ERROR_OCCURRED(nil_packet_size_req(device->phone, device_id, &device->packet_dimension))){ 303 rc = nil_packet_size_req(device->phone, device_id, 304 &device->packet_dimension); 305 if (rc != EOK) { 305 306 fibril_rwlock_write_unlock(&arp_globals.lock); 306 307 arp_protos_destroy(&device->protos); 307 308 free(device); 308 return ERROR_CODE; 309 } 309 return rc; 310 } 311 310 312 // get hardware address 311 if(ERROR_OCCURRED(nil_get_addr_req(device->phone, device_id, &device->addr, &device->addr_data))){ 313 rc = nil_get_addr_req(device->phone, device_id, &device->addr, 314 &device->addr_data); 315 if (rc != EOK) { 312 316 fibril_rwlock_write_unlock(&arp_globals.lock); 313 317 arp_protos_destroy(&device->protos); 314 318 free(device); 315 return ERROR_CODE; 316 } 319 return rc; 320 } 321 317 322 // get broadcast address 318 if(ERROR_OCCURRED(nil_get_broadcast_addr_req(device->phone, device_id, &device->broadcast_addr, &device->broadcast_data))){ 323 rc = nil_get_broadcast_addr_req(device->phone, device_id, 324 &device->broadcast_addr, &device->broadcast_data); 325 if (rc != EOK) { 319 326 fibril_rwlock_write_unlock(&arp_globals.lock); 320 327 free(device->addr); … … 322 329 arp_protos_destroy(&device->protos); 323 330 free(device); 324 return ERROR_CODE; 325 } 326 if(ERROR_OCCURRED(arp_cache_add(&arp_globals.cache, device->device_id, device))){ 331 return rc; 332 } 333 334 rc = arp_cache_add(&arp_globals.cache, device->device_id, 335 device); 336 if (rc != EOK) { 327 337 fibril_rwlock_write_unlock(&arp_globals.lock); 328 338 free(device->addr); … … 332 342 arp_protos_destroy(&device->protos); 333 343 free(device); 334 return ERROR_CODE; 335 } 336 printf("%s: Device registered (id: %d, type: 0x%x, service: %d, proto: %d)\n", 337 NAME, device->device_id, device->hardware, device->service, protocol); 344 return rc; 345 } 346 printf("%s: Device registered (id: %d, type: 0x%x, service: %d," 347 " proto: %d)\n", NAME, device->device_id, device->hardware, 348 device->service, protocol); 338 349 } 339 350 fibril_rwlock_write_unlock(&arp_globals.lock); 351 340 352 return EOK; 341 353 } 342 354 343 int arp_device_req(int arp_phone, device_id_t device_id, services_t protocol, services_t netif, measured_string_ref address){ 344 ERROR_DECLARE; 345 346 measured_string_ref tmp; 347 348 // copy the given address for exclusive use 349 tmp = measured_string_copy(address); 350 if(ERROR_OCCURRED(arp_device_message(device_id, netif, protocol, tmp))){ 351 free(tmp->value); 352 free(tmp); 353 } 354 return ERROR_CODE; 355 } 356 357 int arp_initialize(async_client_conn_t client_connection){ 358 ERROR_DECLARE; 355 /** Initializes the ARP module. 356 * 357 * @param[in] client_connection The client connection processing function. 358 * The module skeleton propagates its own one. 359 * @returns EOK on success. 360 * @returns ENOMEM if there is not enough memory left. 361 */ 362 int arp_initialize(async_client_conn_t client_connection) 363 { 364 int rc; 359 365 360 366 fibril_rwlock_initialize(&arp_globals.lock); 361 367 fibril_rwlock_write_lock(&arp_globals.lock); 362 368 arp_globals.client_connection = client_connection; 363 ERROR_PROPAGATE(arp_cache_initialize(&arp_globals.cache));369 rc = arp_cache_initialize(&arp_globals.cache); 364 370 fibril_rwlock_write_unlock(&arp_globals.lock); 365 return EOK; 366 } 367 368 int arp_message_standalone(ipc_callid_t callid, ipc_call_t *call, 369 ipc_call_t *answer, int *answer_count) 370 { 371 ERROR_DECLARE; 372 373 measured_string_ref address; 374 measured_string_ref translation; 375 char * data; 376 packet_t packet; 377 packet_t next; 378 379 *answer_count = 0; 380 switch (IPC_GET_METHOD(*call)) { 381 case IPC_M_PHONE_HUNGUP: 382 return EOK; 383 case NET_ARP_DEVICE: 384 ERROR_PROPAGATE(measured_strings_receive(&address, &data, 1)); 385 if(ERROR_OCCURRED(arp_device_message(IPC_GET_DEVICE(call), IPC_GET_SERVICE(call), ARP_GET_NETIF(call), address))){ 386 free(address); 387 free(data); 388 } 389 return ERROR_CODE; 390 case NET_ARP_TRANSLATE: 391 ERROR_PROPAGATE(measured_strings_receive(&address, &data, 1)); 392 fibril_rwlock_read_lock(&arp_globals.lock); 393 translation = arp_translate_message(IPC_GET_DEVICE(call), IPC_GET_SERVICE(call), address); 394 free(address); 395 free(data); 396 if(! translation){ 397 fibril_rwlock_read_unlock(&arp_globals.lock); 398 return ENOENT; 399 } 400 ERROR_CODE = measured_strings_reply(translation, 1); 401 fibril_rwlock_read_unlock(&arp_globals.lock); 402 return ERROR_CODE; 403 case NET_ARP_CLEAR_DEVICE: 404 return arp_clear_device_req(0, IPC_GET_DEVICE(call)); 405 case NET_ARP_CLEAR_ADDRESS: 406 ERROR_PROPAGATE(measured_strings_receive(&address, &data, 1)); 407 arp_clear_address_req(0, IPC_GET_DEVICE(call), IPC_GET_SERVICE(call), address); 408 free(address); 409 free(data); 410 return EOK; 411 case NET_ARP_CLEAN_CACHE: 412 return arp_clean_cache_req(0); 413 case NET_IL_DEVICE_STATE: 414 // do nothing - keep the cache 415 return EOK; 416 case NET_IL_RECEIVED: 417 if(! ERROR_OCCURRED(packet_translate_remote(arp_globals.net_phone, &packet, IPC_GET_PACKET(call)))){ 418 fibril_rwlock_read_lock(&arp_globals.lock); 419 do{ 420 next = pq_detach(packet); 421 ERROR_CODE = arp_receive_message(IPC_GET_DEVICE(call), packet); 422 if(ERROR_CODE != 1){ 423 pq_release_remote(arp_globals.net_phone, packet_get_id(packet)); 424 } 425 packet = next; 426 }while(packet); 427 fibril_rwlock_read_unlock(&arp_globals.lock); 428 } 429 return ERROR_CODE; 430 case NET_IL_MTU_CHANGED: 431 return arp_mtu_changed_message(IPC_GET_DEVICE(call), IPC_GET_MTU(call)); 432 } 433 434 return ENOTSUP; 435 } 436 437 int arp_mtu_changed_message(device_id_t device_id, size_t mtu){ 371 372 return rc; 373 } 374 375 /** Updates the device content length according to the new MTU value. 376 * 377 * @param[in] device_id The device identifier. 378 * @param[in] mtu The new mtu value. 379 * @returns ENOENT if device is not found. 380 * @returns EOK on success. 381 */ 382 static int arp_mtu_changed_message(device_id_t device_id, size_t mtu) 383 { 438 384 arp_device_ref device; 439 385 440 386 fibril_rwlock_write_lock(&arp_globals.lock); 441 387 device = arp_cache_find(&arp_globals.cache, device_id); 442 if (! device){388 if (!device) { 443 389 fibril_rwlock_write_unlock(&arp_globals.lock); 444 390 return ENOENT; 445 391 } 446 392 device->packet_dimension.content = mtu; 393 fibril_rwlock_write_unlock(&arp_globals.lock); 447 394 printf("arp - device %d changed mtu to %d\n\n", device_id, mtu); 448 fibril_rwlock_write_unlock(&arp_globals.lock);449 395 return EOK; 450 396 } 451 397 452 int arp_proto_create(arp_proto_ref * proto, services_t service, measured_string_ref address){ 453 ERROR_DECLARE; 454 455 *proto = (arp_proto_ref) malloc(sizeof(arp_proto_t)); 456 if(!(*proto)){ 457 return ENOMEM; 458 } 459 (** proto).service = service; 460 (** proto).addr = address; 461 (** proto).addr_data = address->value; 462 if(ERROR_OCCURRED(arp_addr_initialize(&(** proto).addresses))){ 463 free(*proto); 464 return ERROR_CODE; 465 } 466 return EOK; 467 } 468 469 int arp_receive_message(device_id_t device_id, packet_t packet){ 470 ERROR_DECLARE; 471 398 /** Processes the received ARP packet. 399 * 400 * Updates the source hardware address if the source entry exists or the packet 401 * is targeted to my protocol address. 402 * Responses to the ARP request if the packet is the ARP request and is 403 * targeted to my address. 404 * 405 * @param[in] device_id The source device identifier. 406 * @param[in,out] packet The received packet. 407 * @returns EOK on success and the packet is no longer needed. 408 * @returns One on success and the packet has been reused. 409 * @returns EINVAL if the packet is too small to carry an ARP 410 * packet. 411 * @returns EINVAL if the received address lengths differs from 412 * the registered values. 413 * @returns ENOENT if the device is not found in the cache. 414 * @returns ENOENT if the protocol for the device is not found in 415 * the cache. 416 * @returns ENOMEM if there is not enough memory left. 417 */ 418 static int arp_receive_message(device_id_t device_id, packet_t packet) 419 { 472 420 size_t length; 473 421 arp_header_ref header; … … 475 423 arp_proto_ref proto; 476 424 measured_string_ref hw_source; 477 uint8_t * src_hw; 478 uint8_t * src_proto; 479 uint8_t * des_hw; 480 uint8_t * des_proto; 425 uint8_t *src_hw; 426 uint8_t *src_proto; 427 uint8_t *des_hw; 428 uint8_t *des_proto; 429 int rc; 481 430 482 431 length = packet_get_data_length(packet); 483 if (length <= sizeof(arp_header_t)){432 if (length <= sizeof(arp_header_t)) 484 433 return EINVAL; 485 } 434 486 435 device = arp_cache_find(&arp_globals.cache, device_id); 487 if (! device){436 if (!device) 488 437 return ENOENT; 489 } 438 490 439 header = (arp_header_ref) packet_get_data(packet); 491 if((ntohs(header->hardware) != device->hardware) 492 || (length < sizeof(arp_header_t) + header->hardware_length * 2u + header->protocol_length * 2u)){ 440 if ((ntohs(header->hardware) != device->hardware) || 441 (length < sizeof(arp_header_t) + header->hardware_length * 2U + 442 header->protocol_length * 2U)) { 493 443 return EINVAL; 494 444 } 495 proto = arp_protos_find(&device->protos, protocol_unmap(device->service, ntohs(header->protocol))); 496 if(! proto){ 445 446 proto = arp_protos_find(&device->protos, 447 protocol_unmap(device->service, ntohs(header->protocol))); 448 if (!proto) 497 449 return ENOENT; 498 } 450 499 451 src_hw = ((uint8_t *) header) + sizeof(arp_header_t); 500 452 src_proto = src_hw + header->hardware_length; 501 453 des_hw = src_proto + header->protocol_length; 502 454 des_proto = des_hw + header->hardware_length; 503 hw_source = arp_addr_find(&proto->addresses, (char *) src_proto, CONVERT_SIZE(uint8_t, char, header->protocol_length)); 455 hw_source = arp_addr_find(&proto->addresses, (char *) src_proto, 456 CONVERT_SIZE(uint8_t, char, header->protocol_length)); 504 457 // exists? 505 if(hw_source){ 506 if(hw_source->length != CONVERT_SIZE(uint8_t, char, header->hardware_length)){ 458 if (hw_source) { 459 if (hw_source->length != CONVERT_SIZE(uint8_t, char, 460 header->hardware_length)) { 507 461 return EINVAL; 508 462 } … … 510 464 } 511 465 // is my protocol address? 512 if(proto->addr->length != CONVERT_SIZE(uint8_t, char, header->protocol_length)){ 466 if (proto->addr->length != CONVERT_SIZE(uint8_t, char, 467 header->protocol_length)) { 513 468 return EINVAL; 514 469 } 515 if(! str_lcmp(proto->addr->value, (char *) des_proto, proto->addr->length)){ 470 if (!str_lcmp(proto->addr->value, (char *) des_proto, 471 proto->addr->length)) { 516 472 // not already upadted? 517 if(! hw_source){ 518 hw_source = measured_string_create_bulk((char *) src_hw, CONVERT_SIZE(uint8_t, char, header->hardware_length)); 519 if(! hw_source){ 473 if (!hw_source) { 474 hw_source = measured_string_create_bulk((char *) src_hw, 475 CONVERT_SIZE(uint8_t, char, 476 header->hardware_length)); 477 if (!hw_source) 520 478 return ENOMEM; 521 } 522 ERROR_PROPAGATE(arp_addr_add(&proto->addresses, (char *) src_proto, CONVERT_SIZE(uint8_t, char, header->protocol_length), hw_source)); 523 } 524 if(ntohs(header->operation) == ARPOP_REQUEST){ 479 480 rc = arp_addr_add(&proto->addresses, (char *) src_proto, 481 CONVERT_SIZE(uint8_t, char, 482 header->protocol_length), hw_source); 483 if (rc != EOK) 484 return rc; 485 } 486 if (ntohs(header->operation) == ARPOP_REQUEST) { 525 487 header->operation = htons(ARPOP_REPLY); 526 488 memcpy(des_proto, src_proto, header->protocol_length); 527 memcpy(src_proto, proto->addr->value, header->protocol_length); 528 memcpy(src_hw, device->addr->value, device->packet_dimension.addr_len); 529 memcpy(des_hw, hw_source->value, header->hardware_length); 530 ERROR_PROPAGATE(packet_set_addr(packet, src_hw, des_hw, header->hardware_length)); 531 nil_send_msg(device->phone, device_id, packet, SERVICE_ARP); 489 memcpy(src_proto, proto->addr->value, 490 header->protocol_length); 491 memcpy(src_hw, device->addr->value, 492 device->packet_dimension.addr_len); 493 memcpy(des_hw, hw_source->value, 494 header->hardware_length); 495 496 rc = packet_set_addr(packet, src_hw, des_hw, 497 header->hardware_length); 498 if (rc != EOK) 499 return rc; 500 501 nil_send_msg(device->phone, device_id, packet, 502 SERVICE_ARP); 532 503 return 1; 533 504 } 534 505 } 506 535 507 return EOK; 536 508 } 537 509 538 measured_string_ref arp_translate_message(device_id_t device_id, services_t protocol, measured_string_ref target){ 510 511 /** Returns the hardware address for the given protocol address. 512 * 513 * Sends the ARP request packet if the hardware address is not found in the 514 * cache. 515 * 516 * @param[in] device_id The device identifier. 517 * @param[in] protocol The protocol service. 518 * @param[in] target The target protocol address. 519 * @returns The hardware address of the target. 520 * @returns NULL if the target parameter is NULL. 521 * @returns NULL if the device is not found. 522 * @returns NULL if the device packet is too small to send a 523 * request. 524 * @returns NULL if the hardware address is not found in the cache. 525 */ 526 static measured_string_ref 527 arp_translate_message(device_id_t device_id, services_t protocol, 528 measured_string_ref target) 529 { 539 530 arp_device_ref device; 540 531 arp_proto_ref proto; … … 544 535 arp_header_ref header; 545 536 546 if (! target){537 if (!target) 547 538 return NULL; 548 } 539 549 540 device = arp_cache_find(&arp_globals.cache, device_id); 550 if (! device){541 if (!device) 551 542 return NULL; 552 } 543 553 544 proto = arp_protos_find(&device->protos, protocol); 554 if ((! proto) || (proto->addr->length != target->length)){545 if (!proto || (proto->addr->length != target->length)) 555 546 return NULL; 556 } 547 557 548 addr = arp_addr_find(&proto->addresses, target->value, target->length); 558 if (addr){549 if (addr) 559 550 return addr; 560 } 551 561 552 // ARP packet content size = header + (address + translation) * 2 562 length = 8 + (CONVERT_SIZE(char, uint8_t, proto->addr->length) + CONVERT_SIZE(char, uint8_t, device->addr->length)) * 2; 563 if(length > device->packet_dimension.content){ 553 length = 8 + 2 * (CONVERT_SIZE(char, uint8_t, proto->addr->length) + 554 CONVERT_SIZE(char, uint8_t, device->addr->length)); 555 if (length > device->packet_dimension.content) 564 556 return NULL; 565 } 566 packet = packet_get_4_remote(arp_globals.net_phone, device->packet_dimension.addr_len, device->packet_dimension.prefix, length, device->packet_dimension.suffix); 567 if(! packet){ 557 558 packet = packet_get_4_remote(arp_globals.net_phone, 559 device->packet_dimension.addr_len, device->packet_dimension.prefix, 560 length, device->packet_dimension.suffix); 561 if (!packet) 568 562 return NULL; 569 } 563 570 564 header = (arp_header_ref) packet_suffix(packet, length); 571 if (! header){565 if (!header) { 572 566 pq_release_remote(arp_globals.net_phone, packet_get_id(packet)); 573 567 return NULL; 574 568 } 569 575 570 header->hardware = htons(device->hardware); 576 571 header->hardware_length = (uint8_t) device->addr->length; … … 579 574 header->operation = htons(ARPOP_REQUEST); 580 575 length = sizeof(arp_header_t); 581 memcpy(((uint8_t *) header) + length, device->addr->value, device->addr->length); 576 memcpy(((uint8_t *) header) + length, device->addr->value, 577 device->addr->length); 582 578 length += device->addr->length; 583 memcpy(((uint8_t *) header) + length, proto->addr->value, proto->addr->length); 579 memcpy(((uint8_t *) header) + length, proto->addr->value, 580 proto->addr->length); 584 581 length += proto->addr->length; 585 582 bzero(((uint8_t *) header) + length, device->addr->length); 586 583 length += device->addr->length; 587 584 memcpy(((uint8_t *) header) + length, target->value, target->length); 588 if(packet_set_addr(packet, (uint8_t *) device->addr->value, (uint8_t *) device->broadcast_addr->value, CONVERT_SIZE(char, uint8_t, device->addr->length)) != EOK){ 585 586 if (packet_set_addr(packet, (uint8_t *) device->addr->value, 587 (uint8_t *) device->broadcast_addr->value, 588 CONVERT_SIZE(char, uint8_t, device->addr->length)) != EOK) { 589 589 pq_release_remote(arp_globals.net_phone, packet_get_id(packet)); 590 590 return NULL; 591 591 } 592 592 593 nil_send_msg(device->phone, device_id, packet, SERVICE_ARP); 593 594 return NULL; 594 595 } 595 596 597 598 /** Processes the ARP message. 599 * 600 * @param[in] callid The message identifier. 601 * @param[in] call The message parameters. 602 * @param[out] answer The message answer parameters. 603 * @param[out] answer_count The last parameter for the actual answer in the 604 * answer parameter. 605 * @returns EOK on success. 606 * @returns ENOTSUP if the message is not known. 607 * 608 * @see arp_interface.h 609 * @see IS_NET_ARP_MESSAGE() 610 */ 611 int 612 arp_message_standalone(ipc_callid_t callid, ipc_call_t *call, 613 ipc_call_t *answer, int *answer_count) 614 { 615 measured_string_ref address; 616 measured_string_ref translation; 617 char *data; 618 packet_t packet; 619 packet_t next; 620 int rc; 621 622 *answer_count = 0; 623 switch (IPC_GET_METHOD(*call)) { 624 case IPC_M_PHONE_HUNGUP: 625 return EOK; 626 627 case NET_ARP_DEVICE: 628 rc = measured_strings_receive(&address, &data, 1); 629 if (rc != EOK) 630 return rc; 631 632 rc = arp_device_message(IPC_GET_DEVICE(call), 633 IPC_GET_SERVICE(call), ARP_GET_NETIF(call), address); 634 if (rc != EOK) { 635 free(address); 636 free(data); 637 } 638 return rc; 639 640 case NET_ARP_TRANSLATE: 641 rc = measured_strings_receive(&address, &data, 1); 642 if (rc != EOK) 643 return rc; 644 645 fibril_rwlock_read_lock(&arp_globals.lock); 646 translation = arp_translate_message(IPC_GET_DEVICE(call), 647 IPC_GET_SERVICE(call), address); 648 free(address); 649 free(data); 650 if (!translation) { 651 fibril_rwlock_read_unlock(&arp_globals.lock); 652 return ENOENT; 653 } 654 rc = measured_strings_reply(translation, 1); 655 fibril_rwlock_read_unlock(&arp_globals.lock); 656 return rc; 657 658 case NET_ARP_CLEAR_DEVICE: 659 return arp_clear_device_req(0, IPC_GET_DEVICE(call)); 660 661 case NET_ARP_CLEAR_ADDRESS: 662 rc = measured_strings_receive(&address, &data, 1); 663 if (rc != EOK) 664 return rc; 665 666 arp_clear_address_req(0, IPC_GET_DEVICE(call), 667 IPC_GET_SERVICE(call), address); 668 free(address); 669 free(data); 670 return EOK; 671 672 case NET_ARP_CLEAN_CACHE: 673 return arp_clean_cache_req(0); 674 675 case NET_IL_DEVICE_STATE: 676 // do nothing - keep the cache 677 return EOK; 678 679 case NET_IL_RECEIVED: 680 rc = packet_translate_remote(arp_globals.net_phone, &packet, 681 IPC_GET_PACKET(call)); 682 if (rc != EOK) 683 return rc; 684 685 fibril_rwlock_read_lock(&arp_globals.lock); 686 do { 687 next = pq_detach(packet); 688 rc = arp_receive_message(IPC_GET_DEVICE(call), packet); 689 if (rc != 1) { 690 pq_release_remote(arp_globals.net_phone, 691 packet_get_id(packet)); 692 } 693 packet = next; 694 } while (packet); 695 fibril_rwlock_read_unlock(&arp_globals.lock); 696 697 return EOK; 698 699 case NET_IL_MTU_CHANGED: 700 return arp_mtu_changed_message(IPC_GET_DEVICE(call), 701 IPC_GET_MTU(call)); 702 } 703 704 return ENOTSUP; 705 } 706 596 707 /** Default thread for new connections. 597 708 * 598 * @param[in] iid The initial message identifier. 599 * @param[in] icall The initial message call structure. 600 * 601 */ 602 static void il_client_connection(ipc_callid_t iid, ipc_call_t * icall) 709 * @param[in] iid The initial message identifier. 710 * @param[in] icall The initial message call structure. 711 */ 712 static void il_client_connection(ipc_callid_t iid, ipc_call_t *icall) 603 713 { 604 714 /* … … 608 718 ipc_answer_0(iid, EOK); 609 719 610 while (true) {720 while (true) { 611 721 ipc_call_t answer; 612 722 int answer_count; … … 623 733 &answer_count); 624 734 625 /* End if said to either by the message or the processing result */ 626 if ((IPC_GET_METHOD(call) == IPC_M_PHONE_HUNGUP) || (res == EHANGUP)) 735 /* 736 * End if told to either by the message or the processing 737 * result. 738 */ 739 if ((IPC_GET_METHOD(call) == IPC_M_PHONE_HUNGUP) || 740 (res == EHANGUP)) 627 741 return; 628 742 … … 634 748 /** Starts the module. 635 749 * 636 * @param argc The count of the command line arguments. Ignored parameter. 637 * @param argv The command line parameters. Ignored parameter. 638 * 639 * @returns EOK on success. 640 * @returns Other error codes as defined for each specific module start function. 641 * 750 * @returns EOK on success. 751 * @returns Other error codes as defined for each specific module 752 * start function. 642 753 */ 643 754 int main(int argc, char *argv[]) 644 755 { 645 ERROR_DECLARE;756 int rc; 646 757 647 758 /* Start the module */ 648 if (ERROR_OCCURRED(il_module_start_standalone(il_client_connection))) 649 return ERROR_CODE; 650 651 return EOK; 759 rc = il_module_start_standalone(il_client_connection); 760 return rc; 652 761 } 653 762 654 763 /** @} 655 764 */ 765
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