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| 4307 | mejdrech | 1 | /* |
| 2 | * Copyright (c) 2009 Lukas Mejdrech |
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| 3 | * All rights reserved. |
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| 4 | * |
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| 5 | * Redistribution and use in source and binary forms, with or without |
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| 6 | * modification, are permitted provided that the following conditions |
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| 7 | * are met: |
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| 8 | * |
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| 9 | * - Redistributions of source code must retain the above copyright |
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| 10 | * notice, this list of conditions and the following disclaimer. |
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| 11 | * - Redistributions in binary form must reproduce the above copyright |
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| 12 | * notice, this list of conditions and the following disclaimer in the |
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| 13 | * documentation and/or other materials provided with the distribution. |
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| 14 | * - The name of the author may not be used to endorse or promote products |
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| 15 | * derived from this software without specific prior written permission. |
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| 16 | * |
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 27 | */ |
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| 28 | |||
| 29 | /** @addtogroup packet |
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| 30 | * @{ |
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| 31 | */ |
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| 32 | |||
| 4350 | mejdrech | 33 | /** @file |
| 34 | * Packet client interface implementation for standalone remote modules. |
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| 35 | * @see packet_client.h |
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| 4307 | mejdrech | 36 | */ |
| 37 | |||
| 38 | #include <async.h> |
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| 39 | |||
| 40 | #include <ipc/ipc.h> |
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| 41 | #include <sys/mman.h> |
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| 42 | |||
| 43 | #include "../../err.h" |
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| 44 | #include "../../messages.h" |
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| 45 | |||
| 46 | #include "packet.h" |
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| 47 | #include "packet_client.h" |
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| 48 | #include "packet_messages.h" |
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| 49 | |||
| 50 | /** Obtains the packet from the packet server as the shared memory block. |
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| 51 | * Creates the local packet mapping as well. |
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| 52 | * @param phone The packet server module phone. Input parameter. |
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| 53 | * @param packet The packet reference pointer to store the received packet reference. Output parameter. |
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| 54 | * @param packet_id The packet identifier. Input parameter. |
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| 55 | * @param size The packet total size in bytes. Input parameter. |
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| 56 | * @returns EOK on success. |
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| 57 | * \todo ipc_share_in_start() error? |
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| 58 | * @returns Other error codes as defined for the pm_add() function. |
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| 59 | */ |
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| 60 | int packet_return( int phone, packet_ref packet, packet_id_t packet_id, size_t size ); |
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| 61 | |||
| 62 | int packet_translate( int phone, packet_ref packet, packet_id_t packet_id ){ |
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| 63 | ERROR_DECLARE; |
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| 64 | |||
| 65 | unsigned int size; |
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| 66 | |||
| 67 | if( ! packet ) return EINVAL; |
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| 68 | * packet = pm_find( packet_id ); |
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| 69 | if( * packet ) return EOK; |
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| 70 | ERROR_PROPAGATE( async_req_1_1( phone, NET_PACKET_GET_SIZE, packet_id, & size )); |
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| 71 | return packet_return( phone, packet, packet_id, size ); |
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| 72 | } |
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| 73 | |||
| 74 | int packet_return( int phone, packet_ref packet, packet_id_t packet_id, size_t size ){ |
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| 75 | ERROR_DECLARE; |
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| 76 | |||
| 77 | aid_t message; |
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| 78 | ipc_call_t answer; |
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| 79 | ipcarg_t result; |
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| 80 | |||
| 81 | message = async_send_1( phone, NET_PACKET_GET, packet_id, & answer ); |
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| 82 | * packet = ( packet_t ) as_get_mappable_page( size ); |
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| 83 | if( ERROR_OCCURRED( ipc_share_in_start_0_0( phone, * packet, size )) |
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| 84 | || ERROR_OCCURRED( pm_add( * packet ))){ |
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| 85 | munmap( * packet, size ); |
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| 86 | async_wait_for( message, NULL ); |
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| 87 | return ERROR_CODE; |
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| 88 | } |
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| 89 | async_wait_for( message, & result ); |
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| 90 | return result; |
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| 91 | } |
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| 92 | |||
| 93 | packet_t packet_get_4( int phone, size_t max_content, size_t addr_len, size_t max_prefix, size_t max_suffix ){ |
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| 94 | ERROR_DECLARE; |
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| 95 | |||
| 96 | packet_id_t packet_id; |
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| 97 | unsigned int size; |
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| 98 | packet_t packet; |
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| 99 | |||
| 100 | if( ERROR_OCCURRED( async_req_4_2( phone, NET_PACKET_CREATE_4, max_content, addr_len, max_prefix, max_suffix, ( ipcarg_t * ) & packet_id, & size )) |
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| 101 | || ERROR_OCCURRED( packet_return( phone, & packet, packet_id, size ))){ |
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| 102 | return NULL; |
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| 103 | } |
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| 104 | return packet; |
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| 105 | } |
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| 106 | |||
| 107 | packet_t packet_get_1( int phone, size_t content ){ |
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| 108 | ERROR_DECLARE; |
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| 109 | |||
| 110 | packet_id_t packet_id; |
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| 111 | unsigned int size; |
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| 112 | packet_t packet; |
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| 113 | |||
| 114 | if( ERROR_OCCURRED( async_req_1_2( phone, NET_PACKET_CREATE_1, content, ( ipcarg_t * ) & packet_id, & size )) |
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| 115 | || ERROR_OCCURRED( packet_return( phone, & packet, packet_id, size ))){ |
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| 116 | return NULL; |
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| 117 | } |
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| 118 | return packet; |
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| 119 | } |
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| 120 | |||
| 121 | void pq_release( int phone, packet_id_t packet_id ){ |
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| 122 | async_msg_1( phone, NET_PACKET_RELEASE, packet_id ); |
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| 123 | } |
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| 124 | |||
| 125 | /** @} |
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| 126 | */ |