Rev 4505 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4307 | mejdrech | 1 | /* |
| 2 | * Copyright (c) 2009 Lukas Mejdrech |
||
| 3 | * All rights reserved. |
||
| 4 | * |
||
| 5 | * Redistribution and use in source and binary forms, with or without |
||
| 6 | * modification, are permitted provided that the following conditions |
||
| 7 | * are met: |
||
| 8 | * |
||
| 9 | * - Redistributions of source code must retain the above copyright |
||
| 10 | * notice, this list of conditions and the following disclaimer. |
||
| 11 | * - Redistributions in binary form must reproduce the above copyright |
||
| 12 | * notice, this list of conditions and the following disclaimer in the |
||
| 13 | * documentation and/or other materials provided with the distribution. |
||
| 14 | * - The name of the author may not be used to endorse or promote products |
||
| 15 | * derived from this software without specific prior written permission. |
||
| 16 | * |
||
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
||
| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
||
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
||
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
||
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
||
| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
||
| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
||
| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
||
| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
||
| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
||
| 27 | */ |
||
| 28 | |||
| 29 | /** @addtogroup packet |
||
| 30 | * @{ |
||
| 31 | */ |
||
| 32 | |||
| 4350 | mejdrech | 33 | /** @file |
| 34 | * Packet client interface implementation for standalone remote modules. |
||
| 35 | * @see packet_client.h |
||
| 4307 | mejdrech | 36 | */ |
| 37 | |||
| 38 | #include <async.h> |
||
| 4505 | mejdrech | 39 | #include <errno.h> |
| 4307 | mejdrech | 40 | |
| 41 | #include <ipc/ipc.h> |
||
| 42 | #include <sys/mman.h> |
||
| 43 | |||
| 44 | #include "../../err.h" |
||
| 45 | #include "../../messages.h" |
||
| 46 | |||
| 47 | #include "packet.h" |
||
| 48 | #include "packet_client.h" |
||
| 4505 | mejdrech | 49 | #include "packet_header.h" |
| 4307 | mejdrech | 50 | #include "packet_messages.h" |
| 51 | |||
| 52 | /** Obtains the packet from the packet server as the shared memory block. |
||
| 53 | * Creates the local packet mapping as well. |
||
| 4756 | mejdrech | 54 | * @param[in] phone The packet server module phone. |
| 55 | * @param[out] packet The packet reference pointer to store the received packet reference. |
||
| 56 | * @param[in] packet_id The packet identifier. |
||
| 57 | * @param[in] size The packet total size in bytes. |
||
| 4307 | mejdrech | 58 | * @returns EOK on success. |
| 59 | * @returns Other error codes as defined for the pm_add() function. |
||
| 4351 | mejdrech | 60 | * @returns Other error codes as defined for the ipc_share_in_start() function. |
| 4307 | mejdrech | 61 | */ |
| 62 | int packet_return( int phone, packet_ref packet, packet_id_t packet_id, size_t size ); |
||
| 63 | |||
| 64 | int packet_translate( int phone, packet_ref packet, packet_id_t packet_id ){ |
||
| 65 | ERROR_DECLARE; |
||
| 66 | |||
| 67 | unsigned int size; |
||
| 4505 | mejdrech | 68 | packet_t next; |
| 4307 | mejdrech | 69 | |
| 70 | if( ! packet ) return EINVAL; |
||
| 71 | * packet = pm_find( packet_id ); |
||
| 4505 | mejdrech | 72 | if( !( * packet )){ |
| 73 | ERROR_PROPAGATE( async_req_1_1( phone, NET_PACKET_GET_SIZE, packet_id, & size )); |
||
| 74 | ERROR_PROPAGATE( packet_return( phone, packet, packet_id, size )); |
||
| 75 | } |
||
| 76 | if(( ** packet ).next ){ |
||
| 77 | return packet_translate( phone, & next, ( ** packet ).next ); |
||
| 78 | }else return EOK; |
||
| 4307 | mejdrech | 79 | } |
| 80 | |||
| 81 | int packet_return( int phone, packet_ref packet, packet_id_t packet_id, size_t size ){ |
||
| 82 | ERROR_DECLARE; |
||
| 83 | |||
| 84 | aid_t message; |
||
| 85 | ipc_call_t answer; |
||
| 86 | ipcarg_t result; |
||
| 87 | |||
| 88 | message = async_send_1( phone, NET_PACKET_GET, packet_id, & answer ); |
||
| 89 | * packet = ( packet_t ) as_get_mappable_page( size ); |
||
| 90 | if( ERROR_OCCURRED( ipc_share_in_start_0_0( phone, * packet, size )) |
||
| 91 | || ERROR_OCCURRED( pm_add( * packet ))){ |
||
| 92 | munmap( * packet, size ); |
||
| 93 | async_wait_for( message, NULL ); |
||
| 94 | return ERROR_CODE; |
||
| 95 | } |
||
| 96 | async_wait_for( message, & result ); |
||
| 97 | return result; |
||
| 98 | } |
||
| 99 | |||
| 100 | packet_t packet_get_4( int phone, size_t max_content, size_t addr_len, size_t max_prefix, size_t max_suffix ){ |
||
| 101 | ERROR_DECLARE; |
||
| 102 | |||
| 103 | packet_id_t packet_id; |
||
| 104 | unsigned int size; |
||
| 105 | packet_t packet; |
||
| 106 | |||
| 4505 | mejdrech | 107 | 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 ))){ |
| 4307 | mejdrech | 108 | return NULL; |
| 109 | } |
||
| 4505 | mejdrech | 110 | packet = pm_find( packet_id ); |
| 111 | if( ! packet ){ |
||
| 112 | if( ERROR_OCCURRED( packet_return( phone, & packet, packet_id, size ))){ |
||
| 113 | return NULL; |
||
| 114 | } |
||
| 115 | } |
||
| 4307 | mejdrech | 116 | return packet; |
| 117 | } |
||
| 118 | |||
| 119 | packet_t packet_get_1( int phone, size_t content ){ |
||
| 120 | ERROR_DECLARE; |
||
| 121 | |||
| 122 | packet_id_t packet_id; |
||
| 123 | unsigned int size; |
||
| 124 | packet_t packet; |
||
| 125 | |||
| 4505 | mejdrech | 126 | if( ERROR_OCCURRED( async_req_1_2( phone, NET_PACKET_CREATE_1, content, ( ipcarg_t * ) & packet_id, & size ))){ |
| 4307 | mejdrech | 127 | return NULL; |
| 128 | } |
||
| 4505 | mejdrech | 129 | packet = pm_find( packet_id ); |
| 130 | if( ! packet ){ |
||
| 131 | if( ERROR_OCCURRED( packet_return( phone, & packet, packet_id, size ))){ |
||
| 132 | return NULL; |
||
| 133 | } |
||
| 134 | } |
||
| 4307 | mejdrech | 135 | return packet; |
| 136 | } |
||
| 137 | |||
| 138 | void pq_release( int phone, packet_id_t packet_id ){ |
||
| 139 | async_msg_1( phone, NET_PACKET_RELEASE, packet_id ); |
||
| 140 | } |
||
| 141 | |||
| 142 | /** @} |
||
| 143 | */ |