Index: uspace/srv/net/il/arp/Makefile =================================================================== --- uspace/srv/net/il/arp/Makefile (revision fe5a9fc4b7984d760b15c9c1dd964a5b0f138bed) +++ uspace/srv/net/il/arp/Makefile (revision ab6f25077f09eecbad05a5e320a8ce20373685db) @@ -34,6 +34,5 @@ SOURCES = \ - arp.c \ - arp_module.c + arp.c include $(USPACE_PREFIX)/Makefile.common Index: uspace/srv/net/il/arp/arp.c =================================================================== --- uspace/srv/net/il/arp/arp.c (revision fe5a9fc4b7984d760b15c9c1dd964a5b0f138bed) +++ uspace/srv/net/il/arp/arp.c (revision ab6f25077f09eecbad05a5e320a8ce20373685db) @@ -35,9 +35,4 @@ * @see arp.h */ - -#include "arp.h" -#include "arp_header.h" -#include "arp_oc.h" -#include "arp_module.h" #include @@ -64,7 +59,7 @@ #include #include -#include -#include - +#include +#include +#include "arp.h" /** ARP module name. */ @@ -73,4 +68,42 @@ /** Number of microseconds to wait for an ARP reply. */ #define ARP_TRANS_WAIT 1000000 + +/** @name ARP operation codes definitions */ +/*@{*/ + +/** REQUEST operation code. */ +#define ARPOP_REQUEST 1 + +/** REPLY operation code. */ +#define ARPOP_REPLY 2 + +/*@}*/ + +/** Type definition of an ARP protocol header. + * @see arp_header + */ +typedef struct arp_header arp_header_t; + +/** ARP protocol header. */ +struct arp_header { + /** + * Hardware type identifier. + * @see hardware.h + */ + uint16_t hardware; + + /** Protocol identifier. */ + uint16_t protocol; + /** Hardware address length in bytes. */ + uint8_t hardware_length; + /** Protocol address length in bytes. */ + uint8_t protocol_length; + + /** + * ARP packet type. + * @see arp_oc.h + */ + uint16_t operation; +} __attribute__ ((packed)); /** ARP global data. */ @@ -231,4 +264,202 @@ return EOK; +} + +/** Process the received ARP packet. + * + * Update the source hardware address if the source entry exists or the packet + * is targeted to my protocol address. + * + * Respond to the ARP request if the packet is the ARP request and is + * targeted to my address. + * + * @param[in] device_id Source device identifier. + * @param[in,out] packet Received packet. + * + * @return EOK on success and the packet is no longer needed. + * @return One on success and the packet has been reused. + * @return EINVAL if the packet is too small to carry an ARP + * packet. + * @return EINVAL if the received address lengths differs from + * the registered values. + * @return ENOENT if the device is not found in the cache. + * @return ENOENT if the protocol for the device is not found in + * the cache. + * @return ENOMEM if there is not enough memory left. + * + */ +static int arp_receive_message(device_id_t device_id, packet_t *packet) +{ + int rc; + + size_t length = packet_get_data_length(packet); + if (length <= sizeof(arp_header_t)) + return EINVAL; + + arp_device_t *device = arp_cache_find(&arp_globals.cache, device_id); + if (!device) + return ENOENT; + + arp_header_t *header = (arp_header_t *) packet_get_data(packet); + if ((ntohs(header->hardware) != device->hardware) || + (length < sizeof(arp_header_t) + header->hardware_length * 2U + + header->protocol_length * 2U)) { + return EINVAL; + } + + arp_proto_t *proto = arp_protos_find(&device->protos, + protocol_unmap(device->service, ntohs(header->protocol))); + if (!proto) + return ENOENT; + + uint8_t *src_hw = ((uint8_t *) header) + sizeof(arp_header_t); + uint8_t *src_proto = src_hw + header->hardware_length; + uint8_t *des_hw = src_proto + header->protocol_length; + uint8_t *des_proto = des_hw + header->hardware_length; + + arp_trans_t *trans = arp_addr_find(&proto->addresses, src_proto, + header->protocol_length); + + if ((trans) && (trans->hw_addr)) { + /* Translation exists */ + if (trans->hw_addr->length != header->hardware_length) + return EINVAL; + + memcpy(trans->hw_addr->value, src_hw, trans->hw_addr->length); + } + + /* Is my protocol address? */ + if (proto->addr->length != header->protocol_length) + return EINVAL; + + if (!bcmp(proto->addr->value, des_proto, proto->addr->length)) { + if (!trans) { + /* Update the translation */ + trans = (arp_trans_t *) malloc(sizeof(arp_trans_t)); + if (!trans) + return ENOMEM; + + trans->hw_addr = NULL; + fibril_condvar_initialize(&trans->cv); + rc = arp_addr_add(&proto->addresses, src_proto, + header->protocol_length, trans); + if (rc != EOK) { + /* The generic char map has already freed trans! */ + return rc; + } + } + + if (!trans->hw_addr) { + trans->hw_addr = measured_string_create_bulk(src_hw, + header->hardware_length); + if (!trans->hw_addr) + return ENOMEM; + + /* Notify the fibrils that wait for the translation. */ + fibril_condvar_broadcast(&trans->cv); + } + + if (ntohs(header->operation) == ARPOP_REQUEST) { + header->operation = htons(ARPOP_REPLY); + memcpy(des_proto, src_proto, header->protocol_length); + memcpy(src_proto, proto->addr->value, + header->protocol_length); + memcpy(src_hw, device->addr->value, + device->packet_dimension.addr_len); + memcpy(des_hw, trans->hw_addr->value, + header->hardware_length); + + rc = packet_set_addr(packet, src_hw, des_hw, + header->hardware_length); + if (rc != EOK) + return rc; + + nil_send_msg(device->phone, device_id, packet, + SERVICE_ARP); + return 1; + } + } + + return EOK; +} + +/** Update the device content length according to the new MTU value. + * + * @param[in] device_id Device identifier. + * @param[in] mtu New MTU value. + * + * @return ENOENT if device is not found. + * @return EOK on success. + * + */ +static int arp_mtu_changed_message(device_id_t device_id, size_t mtu) +{ + fibril_mutex_lock(&arp_globals.lock); + + arp_device_t *device = arp_cache_find(&arp_globals.cache, device_id); + if (!device) { + fibril_mutex_unlock(&arp_globals.lock); + return ENOENT; + } + + device->packet_dimension.content = mtu; + + fibril_mutex_unlock(&arp_globals.lock); + + printf("%s: Device %d changed MTU to %zu\n", NAME, device_id, mtu); + + return EOK; +} + +/** Process IPC messages from the registered device driver modules + * + * @param[in] iid Message identifier. + * @param[in,out] icall Message parameters. + * + */ +static void arp_receiver(ipc_callid_t iid, ipc_call_t *icall) +{ + packet_t *packet; + int rc; + + while (true) { + switch (IPC_GET_IMETHOD(*icall)) { + case NET_IL_DEVICE_STATE: + /* Do nothing - keep the cache */ + ipc_answer_0(iid, (sysarg_t) EOK); + break; + + case NET_IL_RECEIVED: + rc = packet_translate_remote(arp_globals.net_phone, &packet, + IPC_GET_PACKET(*icall)); + if (rc == EOK) { + fibril_mutex_lock(&arp_globals.lock); + do { + packet_t *next = pq_detach(packet); + rc = arp_receive_message(IPC_GET_DEVICE(*icall), packet); + if (rc != 1) { + pq_release_remote(arp_globals.net_phone, + packet_get_id(packet)); + } + + packet = next; + } while (packet); + fibril_mutex_unlock(&arp_globals.lock); + } + ipc_answer_0(iid, (sysarg_t) rc); + break; + + case NET_IL_MTU_CHANGED: + rc = arp_mtu_changed_message(IPC_GET_DEVICE(*icall), + IPC_GET_MTU(*icall)); + ipc_answer_0(iid, (sysarg_t) rc); + break; + + default: + ipc_answer_0(iid, (sysarg_t) ENOTSUP); + } + + iid = async_get_call(icall); + } } @@ -335,5 +566,5 @@ device->phone = nil_bind_service(device->service, (sysarg_t) device->device_id, SERVICE_ARP, - arp_globals.client_connection); + arp_receiver); if (device->phone < 0) { fibril_mutex_unlock(&arp_globals.lock); @@ -396,169 +627,14 @@ } -/** Initialize the ARP module. - * - * @param[in] client_connection The client connection processing function. - * The module skeleton propagates its own one. - * - * @return EOK on success. - * @return ENOMEM if there is not enough memory left. - * - */ -int arp_initialize(async_client_conn_t client_connection) +int il_initialize(int net_phone) { fibril_mutex_initialize(&arp_globals.lock); fibril_mutex_lock(&arp_globals.lock); - arp_globals.client_connection = client_connection; + arp_globals.net_phone = net_phone; int rc = arp_cache_initialize(&arp_globals.cache); fibril_mutex_unlock(&arp_globals.lock); return rc; -} - -/** Update the device content length according to the new MTU value. - * - * @param[in] device_id Device identifier. - * @param[in] mtu New MTU value. - * - * @return ENOENT if device is not found. - * @return EOK on success. - * - */ -static int arp_mtu_changed_message(device_id_t device_id, size_t mtu) -{ - fibril_mutex_lock(&arp_globals.lock); - - arp_device_t *device = arp_cache_find(&arp_globals.cache, device_id); - if (!device) { - fibril_mutex_unlock(&arp_globals.lock); - return ENOENT; - } - - device->packet_dimension.content = mtu; - - fibril_mutex_unlock(&arp_globals.lock); - - printf("%s: Device %d changed MTU to %zu\n", NAME, device_id, mtu); - - return EOK; -} - -/** Process the received ARP packet. - * - * Update the source hardware address if the source entry exists or the packet - * is targeted to my protocol address. - * - * Respond to the ARP request if the packet is the ARP request and is - * targeted to my address. - * - * @param[in] device_id Source device identifier. - * @param[in,out] packet Received packet. - * - * @return EOK on success and the packet is no longer needed. - * @return One on success and the packet has been reused. - * @return EINVAL if the packet is too small to carry an ARP - * packet. - * @return EINVAL if the received address lengths differs from - * the registered values. - * @return ENOENT if the device is not found in the cache. - * @return ENOENT if the protocol for the device is not found in - * the cache. - * @return ENOMEM if there is not enough memory left. - * - */ -static int arp_receive_message(device_id_t device_id, packet_t *packet) -{ - int rc; - - size_t length = packet_get_data_length(packet); - if (length <= sizeof(arp_header_t)) - return EINVAL; - - arp_device_t *device = arp_cache_find(&arp_globals.cache, device_id); - if (!device) - return ENOENT; - - arp_header_t *header = (arp_header_t *) packet_get_data(packet); - if ((ntohs(header->hardware) != device->hardware) || - (length < sizeof(arp_header_t) + header->hardware_length * 2U + - header->protocol_length * 2U)) { - return EINVAL; - } - - arp_proto_t *proto = arp_protos_find(&device->protos, - protocol_unmap(device->service, ntohs(header->protocol))); - if (!proto) - return ENOENT; - - uint8_t *src_hw = ((uint8_t *) header) + sizeof(arp_header_t); - uint8_t *src_proto = src_hw + header->hardware_length; - uint8_t *des_hw = src_proto + header->protocol_length; - uint8_t *des_proto = des_hw + header->hardware_length; - - arp_trans_t *trans = arp_addr_find(&proto->addresses, src_proto, - header->protocol_length); - - if ((trans) && (trans->hw_addr)) { - /* Translation exists */ - if (trans->hw_addr->length != header->hardware_length) - return EINVAL; - - memcpy(trans->hw_addr->value, src_hw, trans->hw_addr->length); - } - - /* Is my protocol address? */ - if (proto->addr->length != header->protocol_length) - return EINVAL; - - if (!bcmp(proto->addr->value, des_proto, proto->addr->length)) { - if (!trans) { - /* Update the translation */ - trans = (arp_trans_t *) malloc(sizeof(arp_trans_t)); - if (!trans) - return ENOMEM; - - trans->hw_addr = NULL; - fibril_condvar_initialize(&trans->cv); - rc = arp_addr_add(&proto->addresses, src_proto, - header->protocol_length, trans); - if (rc != EOK) { - /* The generic char map has already freed trans! */ - return rc; - } - } - - if (!trans->hw_addr) { - trans->hw_addr = measured_string_create_bulk(src_hw, - header->hardware_length); - if (!trans->hw_addr) - return ENOMEM; - - /* Notify the fibrils that wait for the translation. */ - fibril_condvar_broadcast(&trans->cv); - } - - if (ntohs(header->operation) == ARPOP_REQUEST) { - header->operation = htons(ARPOP_REPLY); - memcpy(des_proto, src_proto, header->protocol_length); - memcpy(src_proto, proto->addr->value, - header->protocol_length); - memcpy(src_hw, device->addr->value, - device->packet_dimension.addr_len); - memcpy(des_hw, trans->hw_addr->value, - header->hardware_length); - - rc = packet_set_addr(packet, src_hw, des_hw, - header->hardware_length); - if (rc != EOK) - return rc; - - nil_send_msg(device->phone, device_id, packet, - SERVICE_ARP); - return 1; - } - } - - return EOK; } @@ -714,5 +790,5 @@ * */ -int arp_message(ipc_callid_t callid, ipc_call_t *call, ipc_call_t *answer, +int il_module_message(ipc_callid_t callid, ipc_call_t *call, ipc_call_t *answer, size_t *count) { @@ -720,6 +796,4 @@ measured_string_t *translation; uint8_t *data; - packet_t *packet; - packet_t *next; int rc; @@ -784,33 +858,4 @@ case NET_ARP_CLEAN_CACHE: return arp_clean_cache_req(0); - - case NET_IL_DEVICE_STATE: - /* Do nothing - keep the cache */ - return EOK; - - case NET_IL_RECEIVED: - - rc = packet_translate_remote(arp_globals.net_phone, &packet, - IPC_GET_PACKET(*call)); - if (rc != EOK) - return rc; - - fibril_mutex_lock(&arp_globals.lock); - do { - next = pq_detach(packet); - rc = arp_receive_message(IPC_GET_DEVICE(*call), packet); - if (rc != 1) { - pq_release_remote(arp_globals.net_phone, - packet_get_id(packet)); - } - packet = next; - } while (packet); - fibril_mutex_unlock(&arp_globals.lock); - - return EOK; - - case NET_IL_MTU_CHANGED: - return arp_mtu_changed_message(IPC_GET_DEVICE(*call), - IPC_GET_MTU(*call)); } @@ -818,49 +863,8 @@ } -/** Default thread for new connections. - * - * @param[in] iid Initial message identifier. - * @param[in] icall Initial message call structure. - */ -static void il_client_connection(ipc_callid_t iid, ipc_call_t *icall) -{ - /* - * Accept the connection - * - Answer the first IPC_M_CONNECT_ME_TO call. - */ - ipc_answer_0(iid, EOK); - - while (true) { - ipc_call_t answer; - size_t count; - - /* Clear the answer structure */ - refresh_answer(&answer, &count); - - /* Fetch the next message */ - ipc_call_t call; - ipc_callid_t callid = async_get_call(&call); - - /* Process the message */ - int res = il_module_message(callid, &call, &answer, - &count); - - /* - * End if told to either by the message or the processing - * result. - */ - if ((IPC_GET_IMETHOD(call) == IPC_M_PHONE_HUNGUP) || - (res == EHANGUP)) - return; - - /* Answer the message */ - answer_call(callid, res, &answer, count); - } -} - int main(int argc, char *argv[]) { /* Start the module */ - return il_module_start(il_client_connection); + return il_module_start(SERVICE_ARP); } Index: uspace/srv/net/il/arp/arp.h =================================================================== --- uspace/srv/net/il/arp/arp.h (revision fe5a9fc4b7984d760b15c9c1dd964a5b0f138bed) +++ uspace/srv/net/il/arp/arp.h (revision ab6f25077f09eecbad05a5e320a8ce20373685db) @@ -125,10 +125,4 @@ arp_cache_t cache; - /** - * The client connection processing function. - * The module skeleton propagates its own one. - */ - async_client_conn_t client_connection; - /** Networking module phone. */ int net_phone; Index: uspace/srv/net/il/arp/arp_header.h =================================================================== --- uspace/srv/net/il/arp/arp_header.h (revision fe5a9fc4b7984d760b15c9c1dd964a5b0f138bed) +++ (revision ) @@ -1,73 +1,0 @@ -/* - * Copyright (c) 2009 Lukas Mejdrech - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * - Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - The name of the author may not be used to endorse or promote products - * derived from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES - * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. - * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -/** @addtogroup arp - * @{ - */ - -/** @file - * ARP protocol header. - * Based on the RFC 826. - */ - -#ifndef NET_ARP_HEADER_H_ -#define NET_ARP_HEADER_H_ - -#include - -/** Type definition of an ARP protocol header. - * @see arp_header - */ -typedef struct arp_header arp_header_t; - -/** ARP protocol header. */ -struct arp_header { - /** - * Hardware type identifier. - * @see hardware.h - */ - uint16_t hardware; - - /** Protocol identifier. */ - uint16_t protocol; - /** Hardware address length in bytes. */ - uint8_t hardware_length; - /** Protocol address length in bytes. */ - uint8_t protocol_length; - - /** - * ARP packet type. - * @see arp_oc.h - */ - uint16_t operation; -} __attribute__ ((packed)); - -#endif - -/** @} - */ Index: uspace/srv/net/il/arp/arp_module.c =================================================================== --- uspace/srv/net/il/arp/arp_module.c (revision fe5a9fc4b7984d760b15c9c1dd964a5b0f138bed) +++ (revision ) @@ -1,92 +1,0 @@ -/* - * Copyright (c) 2009 Lukas Mejdrech - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * - Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - The name of the author may not be used to endorse or promote products - * derived from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES - * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. - * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -/** @addtogroup arp - * @{ - */ - -/** @file - * ARP standalone module implementation. - * Contains skeleton module functions mapping. - * The functions are used by the module skeleton as module specific entry - * points. - * @see module.c - */ - -#include -#include -#include - -#include -#include - -#include -#include -#include -#include - -#include "arp.h" -#include "arp_module.h" - -/** ARP module global data. */ -extern arp_globals_t arp_globals; - -int il_module_message(ipc_callid_t callid, ipc_call_t *call, - ipc_call_t *answer, size_t *count) -{ - return arp_message(callid, call, answer, count); -} - -int il_module_start(async_client_conn_t client_connection) -{ - sysarg_t phonehash; - - async_set_client_connection(client_connection); - arp_globals.net_phone = net_connect_module(); - - int rc = pm_init(); - if (rc != EOK) - return rc; - - rc = arp_initialize(client_connection); - if (rc != EOK) - goto out; - - rc = ipc_connect_to_me(PHONE_NS, SERVICE_ARP, 0, 0, &phonehash); - if (rc != EOK) - goto out; - - async_manager(); - -out: - pm_destroy(); - return rc; -} - -/** @} - */ Index: uspace/srv/net/il/arp/arp_module.h =================================================================== --- uspace/srv/net/il/arp/arp_module.h (revision fe5a9fc4b7984d760b15c9c1dd964a5b0f138bed) +++ (revision ) @@ -1,51 +1,0 @@ -/* - * Copyright (c) 2009 Lukas Mejdrech - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * - Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - The name of the author may not be used to endorse or promote products - * derived from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES - * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. - * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -/** @addtogroup arp - * @{ - */ - -/** @file - * ARP module functions. - * The functions are used as ARP module entry points. - */ - -#ifndef NET_ARP_MODULE_H_ -#define NET_ARP_MODULE_H_ - -#include -#include - -extern int arp_initialize(async_client_conn_t); -extern int arp_message(ipc_callid_t, ipc_call_t *, ipc_call_t *, - size_t *); - -#endif - -/** @} - */ Index: uspace/srv/net/il/arp/arp_oc.h =================================================================== --- uspace/srv/net/il/arp/arp_oc.h (revision fe5a9fc4b7984d760b15c9c1dd964a5b0f138bed) +++ (revision ) @@ -1,57 +1,0 @@ -/* - * Copyright (c) 2009 Lukas Mejdrech - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * - Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - The name of the author may not be used to endorse or promote products - * derived from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES - * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. - * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -/** @addtogroup arp - * @{ - */ - -/** @file - * ARP operation codes according to the on-line IANA - Address Resolution - * Protocol (ARP) Parameters - * http://www.iana.org/assignments/arp-parameters/arp-parameters.xml - * cited January 14 2009. - */ - -#ifndef NET_ARP_ARPOP_H_ -#define NET_ARP_ARPOP_H_ - -/** @name ARP operation codes definitions */ -/*@{*/ - -/** REQUEST operation code. */ -#define ARPOP_REQUEST 1 - -/** REPLY operation code. */ -#define ARPOP_REPLY 2 - -/*@}*/ - -#endif - -/** @} - */