1,5 → 1,5 |
/* |
* Copyright (c) 2008 Lukas Mejdrech |
* Copyright (c) 2009 Lukas Mejdrech |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
26,11 → 26,17 |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
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/** @addtogroup net |
/** @addtogroup packet |
* @{ |
*/ |
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/** @file |
* Packet client. |
* The hosting module has to be compiled with both the packet.c and the packet_client.c source files. |
* To function correctly, initialization of the packet map by the pm_init() function has to happen at the first place. |
* The module should not send the packet messages to the packet server but use the functions provided. |
* The packet map should be released by the pm_destroy() function during the module termination. |
* @see packet.h |
*/ |
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#ifndef __NET_PACKET_CLIENT_H__ |
38,28 → 44,197 |
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#include "packet.h" |
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#define PACKET_PREPEND( packet, type ) ( type * ) packet_prepend(( packet ), sizeof( type )) |
#define PACKET_APPEND( packet, type ) ( type * ) packet_append(( packet ), sizeof( type )) |
#define PACKET_TRIM( packet, prefix, sufix ) packet_trim(( packet ), sizeof( prefix ), sizeof( sufix )) |
/** Allocates the specified type right before the actual packet content and returns its pointer. |
* The wrapper of the packet_prepend() function. |
* @param packet The packet to be used. Input parameter. |
* @param type The type to be allocated at the beginning of the packet content. Input parameter. |
* @returns The typed pointer to the allocated memory. |
* @returns NULL if the packet is not valid. |
* @returns NULL if there is not enough memory left. |
*/ |
#define PACKET_PREFIX( packet, type ) ( type * ) packet_prepend(( packet ), sizeof( type )) |
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void * packet_prepend( packet_t packet, size_t length ); |
void * packet_append( packet_t packet, size_t length ); |
/** Allocates the specified type right after the actual packet content and returns its pointer. |
* The wrapper of the packet_append() function. |
* @param packet The packet to be used. Input parameter. |
* @param type The type to be allocated at the end of the packet content. Input parameter. |
* @returns The typed pointer to the allocated memory. |
* @returns NULL if the packet is not valid. |
* @returns NULL if there is not enough memory left. |
*/ |
#define PACKET_SUFFIX( packet, type ) ( type * ) packet_append(( packet ), sizeof( type )) |
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/** Trims the actual packet content by the specified prefix and suffix types. |
* The wrapper of the packet_trim() function. |
* @param packet The packet to be trimmed. Input parameter. |
* @param prefix The type of the prefix to be removed from the beginning of the packet content. Input parameter. |
* @param suffix The type of the suffix to be removed from the end of the packet content. Input parameter. |
* @returns EOK on success. |
* @returns EINVAL if the packet is not valid. |
* @returns EINVAL if there is not enough memory left. |
*/ |
#define PACKET_TRIM( packet, prefix, suffix ) packet_trim(( packet ), sizeof( prefix ), sizeof( suffix )) |
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/** Allocates the specified space right before the actual packet content and returns its pointer. |
* @param packet The packet to be used. Input parameter. |
* @param length The space length to be allocated at the beginning of the packet content. Input parameter. |
* @returns The pointer to the allocated memory. |
* @returns NULL if there is not enough memory left. |
*/ |
void * packet_prefix( packet_t packet, size_t length ); |
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/** Allocates the specified space right after the actual packet content and returns its pointer. |
* @param packet The packet to be used. Input parameter. |
* @param length The space length to be allocated at the end of the packet content. Input parameter. |
* @returns The pointer to the allocated memory. |
* @returns NULL if there is not enough memory left. |
*/ |
void * packet_suffix( packet_t packet, size_t length ); |
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/** Trims the actual packet content by the specified prefix and suffix lengths. |
* @param packet The packet to be trimmed. Input parameter. |
* @param prefix The prefix length to be removed from the beginning of the packet content. Input parameter. |
* @param suffix The suffix length to be removed from the end of the packet content. Input parameter. |
* @returns EOK on success. |
* @returns EINVAL if the packet is not valid. |
* @returns ENOMEM if there is not enough memory left. |
*/ |
int packet_trim( packet_t packet, size_t prefix, size_t suffix ); |
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/** Copies the packet content. |
* Obtains the new packet from the packet server. |
* @param phone The packet server module phone. Input parameter. |
* @param owner The owner of the new packet. Input parameter. |
* @param packet The packet reference. Input parameter. |
* @returns The packet copy. |
* @returns NULL if the source packet ids not valid. |
* @returns NULL on error. |
* \todo other error? |
*/ |
packet_t packet_copy( int phone, services_t owner, const packet_t packet ); |
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/** Copies the specified data to the beginning of the actual packet content. |
* Pushes the content end if needed. |
* @param packet The packet to be filled. Input parameter. |
* @param data The data to be copied. Input parameter. |
* @param length The length of the copied data. Input parameter. |
* @returns EOK on success. |
* @returns EINVAL if the packet is not valid. |
* @returns ENOMEM if there is not enough memory left. |
*/ |
int packet_copy_data( packet_t packet, const void * data, size_t length ); |
int packet_trim( packet_t packet, size_t prefix, size_t sufix ); |
int packet_destroy( packet_t packet ); |
packet_id_t packet_get_id( packet_t packet ); |
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/** Returns the packet identifier. |
* @param packet The packet. Input parameter. |
* @returns The packet identifier. |
* @returns Zero (0) if the packet is not valid. |
*/ |
packet_id_t packet_get_id( const packet_t packet ); |
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/** Returns the packet content length. |
* @param packet The packet. Input parameter. |
* @returns The packet content length in bytes. |
* @returns Zero (0) if the packet is not valid. |
*/ |
size_t packet_get_data_length( const packet_t packet ); |
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/** Returns the pointer to the beginning of the packet content. |
* @param packet The packet. Input parameter. |
* @returns The pointer to the beginning of the packet content. |
* @returns NULL if the packet is not valid. |
*/ |
void * packet_get_data( const packet_t packet ); |
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/** Returns the stored packet addresses and their length. |
* @param packet The packet. Input parameter. |
* @param src The source address. Output parameter. |
* @param dest The destination address. Output parameter. |
* @returns The addresses length. |
* @returns Zero (0) if the addresses are not present. |
* @returns EINVAL if the packet is not valid. |
* @returns EINVAL if the src and/or the dest parameter is NULL. |
*/ |
int packet_get_addr( const packet_t packet, uint8_t ** src, uint8_t ** dest ); |
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/** Returns the packet operation mode. |
* @param packet The packet. Input parameter. |
* @returns The packet operation mode. |
* @see packet_mode |
*/ |
packet_mode_t packet_get_mode( const packet_t packet ); |
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/** Sets the packet addresses. |
* @param packet The packet. Input parameter. |
* @param src The new source address. Output parameter. |
* @param dest The new destination address. Output parameter. |
* @param addr_len The addresses length. |
* @returns EOK on success. |
* @returns EINVAL if the packet is not valid. |
* @returns ENOMEM if there is not enough memory left. |
*/ |
int packet_set_addr( packet_t packet, const uint8_t * src, const uint8_t * dest, size_t addr_len ); |
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/** Sets the packet operation mode. |
* @param packet The packet. Input parameter. |
* @param mode The new packet operation mode. Input parameter. |
* @returns EOK on success. |
* @returns EINVAL if the packet is not valid. |
* @see packet_mode |
*/ |
int packet_set_mode( packet_t packet, packet_mode_t mode ); |
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/** Sets the packet owner. |
* @param packet The packet. Input parameter. |
* @param owner The new packet owner. Input parameter. |
* @returns EOK on success. |
* @returns EINVAL if the packet is not valid. |
*/ |
int packet_set_owner( packet_t packet, services_t owner ); |
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/** Translates the packet identifier to the packet reference. |
* Tries to find mapping first. |
* Contacts the packet server to share the packet if the mapping is not present. |
* @param phone The packet server module phone. Input parameter. |
* @param packet The packet reference. Output parameter. |
* @param packet_id The packet identifier. Input parameter. |
* @returns EOK on success. |
* @returns EINVAL if the packet parameter is NULL. |
* @returns Other error codes as defined for the NET_PACKET_GET_SIZE message. |
* \todo errors as packet_return() |
*/ |
int packet_translate( int phone, packet_ref packet, packet_id_t packet_id ); |
packet_t packet_get_5( int phone, services_t owner, size_t max_content, size_t addr_len, size_t max_prefix, size_t max_sufix ); |
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/** Obtains the packet of the given dimensions. |
* Contacts the packet server to return the appropriate packet. |
* @param phone The packet server module phone. Input parameter. |
* @param owner The owner of the new packet. Input parameter. |
* @param addr_len The source and destination addresses maximal length in bytes. Input parameter. |
* @param max_prefix The maximal prefix length in bytes. Input parameter. |
* @param max_content The maximal content length in bytes. Input parameter. |
* @param max_suffix The maximal suffix length in bytes. Input parameter. |
* @returns The packet reference. |
* @returns NULL on error. |
* \todo error as NET_PACKET_CREATE_5, packet_return() |
*/ |
packet_t packet_get_5( int phone, services_t owner, size_t max_content, size_t addr_len, size_t max_prefix, size_t max_suffix ); |
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/** Obtains the packet of the given content size. |
* Contacts the packet server to return the appropriate packet. |
* @param phone The packet server module phone. Input parameter. |
* @param owner The owner of the new packet. Input parameter. |
* @param content The maximal content length in bytes. Input parameter. |
* @returns The packet reference. |
* @returns NULL on error. |
* \todo error as NET_PACKET_CREATE_1, packet_return() |
*/ |
packet_t packet_get_1( int phone, services_t owner, size_t content ); |
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/** Releases the packet. |
* The packet is marked as free for use. |
* The module should not use the packet after this point until it is received or obtained again. |
* @param phone The packet server module phone. Input parameter. |
* @param packet_id The packet identifier. Input parameter. |
*/ |
void packet_release( int phone, packet_id_t packet_id ); |
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#endif |