| 0,0 → 1,193 |
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| /* |
| * Copyright (c) 2008 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 net |
| * @{ |
| */ |
| |
| /** @file |
| */ |
| |
| #include <async.h> |
| #include <align.h> |
| #include <errno.h> |
| //#include <stdio.h> |
| #include <unistd.h> |
| |
| #include <ipc/ipc.h> |
| #include <ipc/services.h> |
| #include <sys/mman.h> |
| |
| #include "../../err.h" |
| #include "../../messages.h" |
| |
| #include "packet.h" |
| #include "packet_header.h" |
| #include "packet_server.h" |
| |
| #define IPC_GET_ID( call ) ( packet_id_t ) IPC_GET_ARG1( * call ) |
| #define IPC_GET_OWNER( call ) ( services_t ) IPC_GET_ARG1( * call ) |
| #define IPC_GET_CONTENT( call ) ( size_t ) IPC_GET_ARG2( * call ) |
| #define IPC_GET_ADDR_LEN( call ) ( size_t ) IPC_GET_ARG3( * call ) |
| #define IPC_GET_PREFIX( call ) ( size_t ) IPC_GET_ARG4( * call ) |
| #define IPC_GET_SUFIX( call ) ( size_t ) IPC_GET_ARG5( * call ) |
| |
| #define FREE_QUEUES_COUNT 7 |
| |
| static struct{ |
| packet_t free[ FREE_QUEUES_COUNT ]; |
| int sizes[ FREE_QUEUES_COUNT ]; |
| unsigned int count; |
| } ps_globals = { |
| { NULL, NULL, NULL, NULL, NULL, NULL, NULL }, |
| { PAGE_SIZE, PAGE_SIZE * 2, PAGE_SIZE * 4, PAGE_SIZE * 8, PAGE_SIZE * 16, PAGE_SIZE * 32, PAGE_SIZE * 64 }, |
| 0 |
| }; |
| |
| void packet_release( packet_t packet ); |
| packet_t packet_get( services_t owner, size_t addr_len, size_t max_prefix, size_t max_content, size_t max_sufix ); |
| packet_t packet_create( size_t length, services_t owner, size_t addr_len, size_t max_prefix, size_t max_content, size_t max_sufix ); |
| void packet_init( packet_t packet, services_t owner, size_t addr_len, size_t max_prefix, size_t max_content, size_t max_sufix ); |
| int packet_reply( const packet_t packet ); |
| |
| int packet_server_message( ipc_callid_t callid, ipc_call_t * call, ipc_call_t * answer, int * answer_count ){ |
| packet_t packet; |
| |
| * answer_count = 0; |
| switch( IPC_GET_METHOD( * call )){ |
| case IPC_M_PHONE_HUNGUP: |
| return EOK; |
| case NET_PACKET_CREATE_1: |
| packet = packet_get( IPC_GET_OWNER( call ), 0, 0, IPC_GET_CONTENT( call ), 0 ); |
| if( ! packet ) return ENOMEM; |
| * answer_count = 2; |
| IPC_SET_ARG1( * answer, packet->packet_id ); |
| IPC_SET_ARG2( * answer, packet->length ); |
| return EOK; |
| case NET_PACKET_CREATE_5: |
| packet = packet_get( IPC_GET_OWNER( call ), IPC_GET_ADDR_LEN( call ), IPC_GET_PREFIX( call ), IPC_GET_CONTENT( call ), IPC_GET_SUFIX( call )); |
| if( ! packet ) return ENOMEM; |
| * answer_count = 2; |
| IPC_SET_ARG1( * answer, packet->packet_id ); |
| IPC_SET_ARG2( * answer, packet->length ); |
| return EOK; |
| case NET_PACKET_GET: |
| packet = pm_find( IPC_GET_ID( call )); |
| if( ! packet_is_valid( packet )) return ENOENT; |
| return packet_reply( packet ); |
| case NET_PACKET_GET_SIZE: |
| packet = pm_find( IPC_GET_ID( call )); |
| if( ! packet_is_valid( packet )) return ENOENT; |
| * answer_count = 1; |
| IPC_SET_ARG1( * answer, packet->length ); |
| return EOK; |
| case NET_PACKET_RELEASE: |
| packet = pm_find( IPC_GET_ID( call )); |
| if( ! packet_is_valid( packet )) return ENOENT; |
| pq_destroy( packet, packet_release ); |
| return EOK; |
| } |
| return ENOTSUP; |
| } |
| |
| void packet_release( packet_t packet ){ |
| int index; |
| |
| for( index = 0; ( index < FREE_QUEUES_COUNT - 1 ) && ( packet->length > ps_globals.sizes[ index ] ); ++ index ); |
| ps_globals.free[ index ] = pq_add( ps_globals.free[ index ], packet, packet->length, packet->length ); |
| } |
| |
| packet_t packet_get( services_t owner, size_t addr_len, size_t max_prefix, size_t max_content, size_t max_sufix ){ |
| int index; |
| packet_t packet; |
| size_t length; |
| |
| length = ALIGN_UP( sizeof( struct packet ) + 2 * addr_len + max_prefix + max_content + max_sufix, PAGE_SIZE ); |
| for( index = 0; index < FREE_QUEUES_COUNT - 1; ++ index ){ |
| if( length <= ps_globals.sizes[ index ] ){ |
| packet = ps_globals.free[ index ]; |
| while( packet_is_valid( packet ) && ( packet->length < length )){ |
| packet = pm_find( packet->next ); |
| } |
| if( packet ){ |
| packet_init( packet, owner, addr_len, max_prefix, max_content, max_sufix ); |
| return packet; |
| } |
| } |
| } |
| return packet_create( length, owner, addr_len, max_prefix, max_content, max_sufix ); |
| } |
| |
| packet_t packet_create( size_t length, services_t owner, size_t addr_len, size_t max_prefix, size_t max_content, size_t max_sufix ){ |
| ERROR_DECLARE; |
| |
| packet_t packet; |
| |
| packet = ( packet_t ) mmap( NULL, length, PROTO_READ | PROTO_WRITE, MAP_SHARED | MAP_ANONYMOUS, 0, 0 ); |
| if( packet == MAP_FAILED ) return NULL; |
| ++ ps_globals.count; |
| packet->packet_id = ps_globals.count; |
| packet->mode = PM_ONEWAY; |
| packet->length = length; |
| packet_init( packet, owner, addr_len, max_prefix, max_content, max_sufix ); |
| packet->magic_value = PACKET_MAGIC_VALUE; |
| if( ERROR_OCCURED( pm_add( packet ))){ |
| munmap( packet, packet->length ); |
| return NULL; |
| } |
| packet_release( packet ); |
| return packet; |
| } |
| |
| void packet_init( packet_t packet, services_t owner, size_t addr_len, size_t max_prefix, size_t max_content, size_t max_sufix ){ |
| packet->owner = owner; |
| packet->order = 0; |
| packet->metric = 0; |
| packet->previous = 0; |
| packet->next = 0; |
| packet->addr_len = addr_len; |
| packet->src_addr = sizeof( struct packet ); |
| packet->dest_addr = packet->src_addr + packet->addr_len; |
| packet->max_prefix = max_prefix; |
| packet->max_content = max_content; |
| packet->data_start = packet->dest_addr + packet->addr_len + packet->max_prefix; |
| packet->data_end = packet->data_start; |
| } |
| |
| int packet_reply( const packet_t packet ){ |
| ipc_callid_t callid; |
| size_t size; |
| |
| if( ! packet_is_valid( packet )) return EINVAL; |
| if( ipc_share_in_receive( & callid, & size ) <= 0 ) return EINVAL; |
| if( size != packet->length ) return ENOMEM; |
| return ipc_share_in_finalize( callid, packet, PROTO_READ | PROTO_WRITE ); |
| } |
| |
| /** @} |
| */ |
| Property changes: |
|---|
| Added: svn:eol-style |
|---|
| +native |
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| \ No newline at end of property |
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