WebSVN – HelenOS – Diff – /branches/network/uspace/srv/net/structures/packet/packet_remote.c


/*
 * 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 packet
 *  @{
 */
 
/** @file
 *  Packet client interface implementation for standalone remote modules.
 *  @see packet_client.h
 */
 
#include <async.h>
#include <errno.h>
 
#include <ipc/ipc.h>
#include <sys/mman.h>
 
#include "../../err.h"
#include "../../messages.h"
 
#include "packet.h"
#include "packet_client.h"
#include "packet_header.h"
#include "packet_messages.h"
 
/** Obtains the packet from the packet server as the shared memory block.
 *  Creates the local packet mapping as well.
 *  @param phone The packet server module phone. Input parameter.
 *  @param packet The packet reference pointer to store the received packet reference. Output parameter.
 *  @param packet_id The packet identifier. Input parameter.
 *  @param size The packet total size in bytes. Input parameter.
 *  @returns EOK on success.
 *  @returns Other error codes as defined for the pm_add() function.
 *  @returns Other error codes as defined for the ipc_share_in_start() function.
 */
int packet_return( int phone, packet_ref packet, packet_id_t packet_id, size_t size );
 
int packet_translate( int phone, packet_ref packet, packet_id_t packet_id ){
    ERROR_DECLARE;
 
    unsigned int        size;
    packet_t            next;
 
    if( ! packet ) return EINVAL;
    * packet = pm_find( packet_id );
    if( !( * packet )){
        ERROR_PROPAGATE( async_req_1_1( phone, NET_PACKET_GET_SIZE, packet_id, & size ));
        ERROR_PROPAGATE( packet_return( phone, packet, packet_id, size ));
    }
    if(( ** packet ).next ){
        return packet_translate( phone, & next, ( ** packet ).next );
    }else return EOK;
}
 
int packet_return( int phone, packet_ref packet, packet_id_t packet_id, size_t size ){
    ERROR_DECLARE;
 
    aid_t       message;
    ipc_call_t  answer;
    ipcarg_t    result;
 
    message = async_send_1( phone, NET_PACKET_GET, packet_id, & answer );
    * packet = ( packet_t ) as_get_mappable_page( size );
    if( ERROR_OCCURRED( ipc_share_in_start_0_0( phone, * packet, size ))
    || ERROR_OCCURRED( pm_add( * packet ))){
        munmap( * packet, size );
        async_wait_for( message, NULL );
        return ERROR_CODE;
    }
    async_wait_for( message, & result );
    return result;
}
 
packet_t packet_get_4( int phone, size_t max_content, size_t addr_len, size_t max_prefix, size_t max_suffix ){
    ERROR_DECLARE;
 
    packet_id_t packet_id;
    unsigned int size;
    packet_t packet;
 
    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 ))){
 
        return NULL;
    }
    packet = pm_find( packet_id );
    if( ! packet ){
        if( ERROR_OCCURRED( packet_return( phone, & packet, packet_id, size ))){
            return NULL;
        }
    }
    return packet;
}
 
packet_t packet_get_1( int phone, size_t content ){
    ERROR_DECLARE;
 
    packet_id_t packet_id;
    unsigned int    size;
    packet_t    packet;
 
    if( ERROR_OCCURRED( async_req_1_2( phone, NET_PACKET_CREATE_1, content, ( ipcarg_t * ) & packet_id, & size ))){
 
        return NULL;
    }
    packet = pm_find( packet_id );
    if( ! packet ){
        if( ERROR_OCCURRED( packet_return( phone, & packet, packet_id, size ))){
            return NULL;
        }
    }
    return packet;
}
 
void pq_release( int phone, packet_id_t packet_id ){
    async_msg_1( phone, NET_PACKET_RELEASE, packet_id );
}
 
/** @}
 */
 

Rev 4351	Rev 4505
1	/*	1	/*
2	* Copyright (c) 2009 Lukas Mejdrech	2	* Copyright (c) 2009 Lukas Mejdrech
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions	6	* modification, are permitted provided that the following conditions
7	* are met:	7	* are met:
8	*	8	*
9	* - Redistributions of source code must retain the above copyright	9	* - Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.	10	* notice, this list of conditions and the following disclaimer.
11	* - Redistributions in binary form must reproduce the above copyright	11	* - Redistributions in binary form must reproduce the above copyright
12	* notice, this list of conditions and the following disclaimer in the	12	* notice, this list of conditions and the following disclaimer in the
13	* documentation and/or other materials provided with the distribution.	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	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.	15	* derived from this software without specific prior written permission.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	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	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	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	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	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	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.	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	*/	27	*/
28		28
29	/** @addtogroup packet	29	/** @addtogroup packet
30	* @{	30	* @{
31	*/	31	*/
32		32
33	/** @file	33	/** @file
34	* Packet client interface implementation for standalone remote modules.	34	* Packet client interface implementation for standalone remote modules.
35	* @see packet_client.h	35	* @see packet_client.h
36	*/	36	*/
37		37
38	#include <async.h>	38	#include <async.h>
-		39	#include <errno.h>
39		40
40	#include <ipc/ipc.h>	41	#include <ipc/ipc.h>
41	#include <sys/mman.h>	42	#include <sys/mman.h>
42		43
43	#include "../../err.h"	44	#include "../../err.h"
44	#include "../../messages.h"	45	#include "../../messages.h"
45		46
46	#include "packet.h"	47	#include "packet.h"
47	#include "packet_client.h"	48	#include "packet_client.h"
-		49	#include "packet_header.h"
48	#include "packet_messages.h"	50	#include "packet_messages.h"
49		51
50	/** Obtains the packet from the packet server as the shared memory block.	52	/** Obtains the packet from the packet server as the shared memory block.
51	* Creates the local packet mapping as well.	53	* Creates the local packet mapping as well.
52	* @param phone The packet server module phone. Input parameter.	54	* @param phone The packet server module phone. Input parameter.
53	* @param packet The packet reference pointer to store the received packet reference. Output parameter.	55	* @param packet The packet reference pointer to store the received packet reference. Output parameter.
54	* @param packet_id The packet identifier. Input parameter.	56	* @param packet_id The packet identifier. Input parameter.
55	* @param size The packet total size in bytes. Input parameter.	57	* @param size The packet total size in bytes. Input parameter.
56	* @returns EOK on success.	58	* @returns EOK on success.
57	* @returns Other error codes as defined for the pm_add() function.	59	* @returns Other error codes as defined for the pm_add() function.
58	* @returns Other error codes as defined for the ipc_share_in_start() function.	60	* @returns Other error codes as defined for the ipc_share_in_start() function.
59	*/	61	*/
60	int packet_return( int phone, packet_ref packet, packet_id_t packet_id, size_t size );	62	int packet_return( int phone, packet_ref packet, packet_id_t packet_id, size_t size );
61		63
62	int packet_translate( int phone, packet_ref packet, packet_id_t packet_id ){	64	int packet_translate( int phone, packet_ref packet, packet_id_t packet_id ){
63	ERROR_DECLARE;	65	ERROR_DECLARE;
64		66
65	unsigned int size;	67	unsigned int size;
-		68	packet_t next;
66		69
67	if( ! packet ) return EINVAL;	70	if( ! packet ) return EINVAL;
68	* packet = pm_find( packet_id );	71	* packet = pm_find( packet_id );
69	if( * packet ) return EOK;	72	if( !( * packet )){
70	ERROR_PROPAGATE( async_req_1_1( phone, NET_PACKET_GET_SIZE, packet_id, & size ));	73	ERROR_PROPAGATE( async_req_1_1( phone, NET_PACKET_GET_SIZE, packet_id, & size ));
71	return packet_return( phone, packet, 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;
72	}	79	}
73		80
74	int packet_return( int phone, packet_ref packet, packet_id_t packet_id, size_t size ){	81	int packet_return( int phone, packet_ref packet, packet_id_t packet_id, size_t size ){
75	ERROR_DECLARE;	82	ERROR_DECLARE;
76		83
77	aid_t message;	84	aid_t message;
78	ipc_call_t answer;	85	ipc_call_t answer;
79	ipcarg_t result;	86	ipcarg_t result;
80		87
81	message = async_send_1( phone, NET_PACKET_GET, packet_id, & answer );	88	message = async_send_1( phone, NET_PACKET_GET, packet_id, & answer );
82	* packet = ( packet_t ) as_get_mappable_page( size );	89	* packet = ( packet_t ) as_get_mappable_page( size );
83	if( ERROR_OCCURRED( ipc_share_in_start_0_0( phone, * packet, size ))	90	if( ERROR_OCCURRED( ipc_share_in_start_0_0( phone, * packet, size ))
84	\|\| ERROR_OCCURRED( pm_add( * packet ))){	91	\|\| ERROR_OCCURRED( pm_add( * packet ))){
85	munmap( * packet, size );	92	munmap( * packet, size );
86	async_wait_for( message, NULL );	93	async_wait_for( message, NULL );
87	return ERROR_CODE;	94	return ERROR_CODE;
88	}	95	}
89	async_wait_for( message, & result );	96	async_wait_for( message, & result );
90	return result;	97	return result;
91	}	98	}
92		99
93	packet_t packet_get_4( int phone, size_t max_content, size_t addr_len, size_t max_prefix, size_t max_suffix ){	100	packet_t packet_get_4( int phone, size_t max_content, size_t addr_len, size_t max_prefix, size_t max_suffix ){
94	ERROR_DECLARE;	101	ERROR_DECLARE;
95		102
96	packet_id_t packet_id;	103	packet_id_t packet_id;
97	unsigned int size;	104	unsigned int size;
98	packet_t packet;	105	packet_t packet;
99		106
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 ))	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 ))){
101	\|\| ERROR_OCCURRED( packet_return( phone, & packet, packet_id, size ))){	-
102	return NULL;	108	return NULL;
103	}	109	}
-		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	}
104	return packet;	116	return packet;
105	}	117	}
106		118
107	packet_t packet_get_1( int phone, size_t content ){	119	packet_t packet_get_1( int phone, size_t content ){
108	ERROR_DECLARE;	120	ERROR_DECLARE;
109		121
110	packet_id_t packet_id;	122	packet_id_t packet_id;
111	unsigned int size;	123	unsigned int size;
112	packet_t packet;	124	packet_t packet;
113		125
114	if( ERROR_OCCURRED( async_req_1_2( phone, NET_PACKET_CREATE_1, content, ( ipcarg_t * ) & packet_id, & size ))	126	if( ERROR_OCCURRED( async_req_1_2( phone, NET_PACKET_CREATE_1, content, ( ipcarg_t * ) & packet_id, & size ))){
115	\|\| ERROR_OCCURRED( packet_return( phone, & packet, packet_id, size ))){	-
116	return NULL;	127	return NULL;
117	}	128	}
-		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	}
118	return packet;	135	return packet;
119	}	136	}
120		137
121	void pq_release( int phone, packet_id_t packet_id ){	138	void pq_release( int phone, packet_id_t packet_id ){
122	async_msg_1( phone, NET_PACKET_RELEASE, packet_id );	139	async_msg_1( phone, NET_PACKET_RELEASE, packet_id );
123	}	140	}
124		141
125	/** @}	142	/** @}
126	*/	143	*/
127		144

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(root)/branches/network/uspace/srv/net/structures/packet/packet_remote.c @ 4756 – Rev 4351 → 4505