WebSVN – HelenOS – Diff – /branches/network/uspace/srv/net/netif/lo/lo.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 lo
 *  @{
 */
 
/** @file
 *  Loopback network interface implementation.
 */
 
#include <async.h>
#include <errno.h>
#include <stdio.h>
#include <string.h>
 
#include <ipc/ipc.h>
#include <ipc/services.h>
 
#include "../../err.h"
#include "../../messages.h"
#include "../../modules.h"
 
#include "../../structures/measured_strings.h"
#include "../../structures/packet/packet_client.h"
 
#include "../../include/device.h"
#include "../../include/nil_interface.h"
 
#include "../../nil/nil_messages.h"
 
#include "../netif.h"
#include "../netif_module.h"
 
/** Default hardware address.
 */
#define DEFAULT_ADDR        "\0\0\0\0\0\0"
 
/** Default address length.
 */
#define DEFAULT_ADDR_LEN    ( sizeof( DEFAULT_ADDR ) / sizeof( char ))
 
/** Loopback module name.
 */
#define NAME    "lo - loopback interface"
 
/** Network interface global data.
 */
netif_globals_t netif_globals;
 
/** Changes the loopback state.
 *  @param[in] device The device structure.
 *  @param[in] state The new device state.
 *  @returns The new state if changed.
 *  @returns EOK otherwise.
 */
int change_state_message( device_ref device, device_state_t state );
 
/** Creates and returns the loopback network interface structure.
 *  @param[in] device_id The new devce identifier.
 *  @param[out] device The device structure.
 *  @returns EOK on success.
 *  @returns EXDEV if one loopback network interface already exists.
 *  @returns ENOMEM if there is not enough memory left.
 */
int create( device_id_t device_id, device_ref * device );
 
/** Prints the module name.
 *  @see NAME
 */
void    module_print_name( void );
 
int netif_specific_message( ipc_callid_t callid, ipc_call_t * call, ipc_call_t * answer, int * answer_count ){
    return ENOTSUP;
}
 
int netif_get_addr_message( device_id_t device_id, measured_string_ref address ){
    if( ! address ) return EBADMEM;
    address->value = DEFAULT_ADDR;
    address->length = DEFAULT_ADDR_LEN;
    return EOK;
}
 
int netif_get_device_stats( device_id_t device_id, device_stats_ref stats ){
    ERROR_DECLARE;
 
    device_ref  device;
 
    if( ! stats ) return EBADMEM;
    ERROR_PROPAGATE( find_device( device_id, & device ));
    memcpy( stats, ( device_stats_ref ) device->specific, sizeof( device_stats_t ));
    return EOK;
}
 
int change_state_message( device_ref device, device_state_t state ){
    if( device->state != state ){
        device->state = state;
        printf( "State changed to %s\n", ( state == NETIF_ACTIVE ) ? "ACTIVE" : "STOPPED" );
        return state;
    }
    return EOK;
}
 
int create( device_id_t device_id, device_ref * device ){
    int index;
 
    if( device_map_count( & netif_globals.device_map ) > 0 ){
        return EXDEV;
    }else{
        * device = ( device_ref ) malloc( sizeof( device_t ));
        if( !( * device )) return ENOMEM;
        ( ** device ).specific = malloc( sizeof( device_stats_t ));
        if( ! ( ** device ).specific ){
            free( * device );
            return ENOMEM;
        }
        null_device_stats(( device_stats_ref )( ** device ).specific );
        ( ** device ).device_id = device_id;
        ( ** device ).nil_phone = -1;
        ( ** device ).state = NETIF_STOPPED;
        index = device_map_add( & netif_globals.device_map, ( ** device ).device_id, * device );
        if( index < 0 ){
            free( * device );
            free(( ** device ).specific );
            * device = NULL;
            return index;
        }
    }
    return EOK;
}
 
int netif_initialize( void ){
    ipcarg_t    phonehash;
 
    return REGISTER_ME( SERVICE_LO, & phonehash );
}
 
void module_print_name( void ){
    printf( "%s", NAME );
}
 
int netif_probe_message( device_id_t device_id, int irq, int io ){
    ERROR_DECLARE;
 
    device_ref          device;
 
    // create a new device
    ERROR_PROPAGATE( create( device_id, & device ));
    // print the settings
    printf("New device created:\n\tid\t= %d\n", device->device_id );
    return EOK;
}
 
int netif_send_message( device_id_t device_id, packet_t packet, services_t sender ){
    ERROR_DECLARE;
 
    device_ref  device;
    size_t      length;
    packet_t    next;
    int         phone;
 
    ERROR_PROPAGATE( find_device( device_id, & device ));
    if( device->state != NETIF_ACTIVE ){
        netif_pq_release( packet_get_id( packet ));
        return EFORWARD;
    }
    next = packet;
    do{
        ++ (( device_stats_ref ) device->specific )->send_packets;
        ++ (( device_stats_ref ) device->specific )->receive_packets;
        length = packet_get_data_length( next );
        (( device_stats_ref ) device->specific )->send_bytes += length;
        (( device_stats_ref ) device->specific )->receive_bytes += length;
        next = pq_next( next );
    }while( next );
    phone = device->nil_phone;
    fibril_rwlock_write_unlock( & netif_globals.lock );
    nil_received_msg( phone, device_id, packet, sender );
    fibril_rwlock_write_lock( & netif_globals.lock );
    return EOK;
}
 
int netif_start_message( device_ref device ){
    return change_state_message( device, NETIF_ACTIVE );
}
 
int netif_stop_message( device_ref device ){
    return change_state_message( device, NETIF_STOPPED );
}
 
/** @}
 */
 

Rev 4731	Rev 4756
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 lo	29	/** @addtogroup lo
30	* @{	30	* @{
31	*/	31	*/
32		32
33	/** @file	33	/** @file
34	* Loopback network interface implementation.	34	* Loopback network interface implementation.
35	*/	35	*/
36		36
37	#include <async.h>	37	#include <async.h>
38	#include <errno.h>	38	#include <errno.h>
39	#include <stdio.h>	39	#include <stdio.h>
40	#include <string.h>	40	#include <string.h>
41		41
42	#include <ipc/ipc.h>	42	#include <ipc/ipc.h>
43	#include <ipc/services.h>	43	#include <ipc/services.h>
44		44
45	#include "../../err.h"	45	#include "../../err.h"
46	#include "../../messages.h"	46	#include "../../messages.h"
47	#include "../../modules.h"	47	#include "../../modules.h"
48		48
49	#include "../../structures/measured_strings.h"	49	#include "../../structures/measured_strings.h"
50	#include "../../structures/packet/packet_client.h"	50	#include "../../structures/packet/packet_client.h"
51		51
52	#include "../../include/device.h"	52	#include "../../include/device.h"
53	#include "../../include/nil_interface.h"	53	#include "../../include/nil_interface.h"
54		54
55	#include "../../nil/nil_messages.h"	55	#include "../../nil/nil_messages.h"
56		56
57	#include "../netif.h"	57	#include "../netif.h"
58	#include "../netif_module.h"	58	#include "../netif_module.h"
59		59
60	/** Default hardware address.	60	/** Default hardware address.
61	*/	61	*/
62	#define DEFAULT_ADDR "\0\0\0\0\0\0"	62	#define DEFAULT_ADDR "\0\0\0\0\0\0"
63		63
64	/** Default address length.	64	/** Default address length.
65	*/	65	*/
66	#define DEFAULT_ADDR_LEN ( sizeof( DEFAULT_ADDR ) / sizeof( char ))	66	#define DEFAULT_ADDR_LEN ( sizeof( DEFAULT_ADDR ) / sizeof( char ))
67		67
68	/** Loopback module name.	68	/** Loopback module name.
69	*/	69	*/
70	#define NAME "lo - loopback interface"	70	#define NAME "lo - loopback interface"
71		71
72	/** Network interface global data.	72	/** Network interface global data.
73	*/	73	*/
74	netif_globals_t netif_globals;	74	netif_globals_t netif_globals;
75		75
76	/** Changes the loopback state.	76	/** Changes the loopback state.
77	* @param device The device structure. Input parameter.	77	* @param[in] device The device structure.
78	* @param state The new device state. Input parameter.	78	* @param[in] state The new device state.
79	* @returns The new state if changed.	79	* @returns The new state if changed.
80	* @returns EOK otherwise.	80	* @returns EOK otherwise.
81	*/	81	*/
82	int change_state_message( device_ref device, device_state_t state );	82	int change_state_message( device_ref device, device_state_t state );
83		83
84	/** Creates and returns the loopback network interface structure.	84	/** Creates and returns the loopback network interface structure.
85	* @param device_id The new devce identifier. Input parameter.	85	* @param[in] device_id The new devce identifier.
86	* @param device The device structure. Output parameter.	86	* @param[out] device The device structure.
87	* @returns EOK on success.	87	* @returns EOK on success.
88	* @returns EXDEV if one loopback network interface already exists.	88	* @returns EXDEV if one loopback network interface already exists.
89	* @returns ENOMEM if there is not enough memory left.	89	* @returns ENOMEM if there is not enough memory left.
90	*/	90	*/
91	int create( device_id_t device_id, device_ref * device );	91	int create( device_id_t device_id, device_ref * device );
92		92
93	/** Prints the module name.	93	/** Prints the module name.
94	* @see NAME	94	* @see NAME
95	*/	95	*/
96	void module_print_name( void );	96	void module_print_name( void );
97		97
98	int netif_specific_message( ipc_callid_t callid, ipc_call_t * call, ipc_call_t * answer, int * answer_count ){	98	int netif_specific_message( ipc_callid_t callid, ipc_call_t * call, ipc_call_t * answer, int * answer_count ){
99	return ENOTSUP;	99	return ENOTSUP;
100	}	100	}
101		101
102	int netif_get_addr_message( device_id_t device_id, measured_string_ref address ){	102	int netif_get_addr_message( device_id_t device_id, measured_string_ref address ){
103	if( ! address ) return EBADMEM;	103	if( ! address ) return EBADMEM;
104	address->value = DEFAULT_ADDR;	104	address->value = DEFAULT_ADDR;
105	address->length = DEFAULT_ADDR_LEN;	105	address->length = DEFAULT_ADDR_LEN;
106	return EOK;	106	return EOK;
107	}	107	}
108		108
109	int netif_get_device_stats( device_id_t device_id, device_stats_ref stats ){	109	int netif_get_device_stats( device_id_t device_id, device_stats_ref stats ){
110	ERROR_DECLARE;	110	ERROR_DECLARE;
111		111
112	device_ref device;	112	device_ref device;
113		113
114	if( ! stats ) return EBADMEM;	114	if( ! stats ) return EBADMEM;
115	ERROR_PROPAGATE( find_device( device_id, & device ));	115	ERROR_PROPAGATE( find_device( device_id, & device ));
116	memcpy( stats, ( device_stats_ref ) device->specific, sizeof( device_stats_t ));	116	memcpy( stats, ( device_stats_ref ) device->specific, sizeof( device_stats_t ));
117	return EOK;	117	return EOK;
118	}	118	}
119		119
120	int change_state_message( device_ref device, device_state_t state ){	120	int change_state_message( device_ref device, device_state_t state ){
121	if( device->state != state ){	121	if( device->state != state ){
122	device->state = state;	122	device->state = state;
123	printf( "State changed to %s\n", ( state == NETIF_ACTIVE ) ? "ACTIVE" : "STOPPED" );	123	printf( "State changed to %s\n", ( state == NETIF_ACTIVE ) ? "ACTIVE" : "STOPPED" );
124	return state;	124	return state;
125	}	125	}
126	return EOK;	126	return EOK;
127	}	127	}
128		128
129	int create( device_id_t device_id, device_ref * device ){	129	int create( device_id_t device_id, device_ref * device ){
130	int index;	130	int index;
131		131
132	if( device_map_count( & netif_globals.device_map ) > 0 ){	132	if( device_map_count( & netif_globals.device_map ) > 0 ){
133	return EXDEV;	133	return EXDEV;
134	}else{	134	}else{
135	* device = ( device_ref ) malloc( sizeof( device_t ));	135	* device = ( device_ref ) malloc( sizeof( device_t ));
136	if( !( * device )) return ENOMEM;	136	if( !( * device )) return ENOMEM;
137	( ** device ).specific = malloc( sizeof( device_stats_t ));	137	( ** device ).specific = malloc( sizeof( device_stats_t ));
138	if( ! ( ** device ).specific ){	138	if( ! ( ** device ).specific ){
139	free( * device );	139	free( * device );
140	return ENOMEM;	140	return ENOMEM;
141	}	141	}
142	null_device_stats(( device_stats_ref )( ** device ).specific );	142	null_device_stats(( device_stats_ref )( ** device ).specific );
143	( ** device ).device_id = device_id;	143	( ** device ).device_id = device_id;
144	( ** device ).nil_phone = -1;	144	( ** device ).nil_phone = -1;
145	( ** device ).state = NETIF_STOPPED;	145	( ** device ).state = NETIF_STOPPED;
146	index = device_map_add( & netif_globals.device_map, ( ** device ).device_id, * device );	146	index = device_map_add( & netif_globals.device_map, ( ** device ).device_id, * device );
147	if( index < 0 ){	147	if( index < 0 ){
148	free( * device );	148	free( * device );
149	free(( ** device ).specific );	149	free(( ** device ).specific );
150	* device = NULL;	150	* device = NULL;
151	return index;	151	return index;
152	}	152	}
153	}	153	}
154	return EOK;	154	return EOK;
155	}	155	}
156		156
157	int netif_initialize( void ){	157	int netif_initialize( void ){
158	ipcarg_t phonehash;	158	ipcarg_t phonehash;
159		159
160	return REGISTER_ME( SERVICE_LO, & phonehash );	160	return REGISTER_ME( SERVICE_LO, & phonehash );
161	}	161	}
162		162
163	void module_print_name( void ){	163	void module_print_name( void ){
164	printf( "%s", NAME );	164	printf( "%s", NAME );
165	}	165	}
166		166
167	int netif_probe_message( device_id_t device_id, int irq, int io ){	167	int netif_probe_message( device_id_t device_id, int irq, int io ){
168	ERROR_DECLARE;	168	ERROR_DECLARE;
169		169
170	device_ref device;	170	device_ref device;
171		171
172	// create a new device	172	// create a new device
173	ERROR_PROPAGATE( create( device_id, & device ));	173	ERROR_PROPAGATE( create( device_id, & device ));
174	// print the settings	174	// print the settings
175	printf("New device created:\n\tid\t= %d\n", device->device_id );	175	printf("New device created:\n\tid\t= %d\n", device->device_id );
176	return EOK;	176	return EOK;
177	}	177	}
178		178
179	int netif_send_message( device_id_t device_id, packet_t packet, services_t sender ){	179	int netif_send_message( device_id_t device_id, packet_t packet, services_t sender ){
180	ERROR_DECLARE;	180	ERROR_DECLARE;
181		181
182	device_ref device;	182	device_ref device;
183	size_t length;	183	size_t length;
184	packet_t next;	184	packet_t next;
185	int phone;	185	int phone;
186		186
187	ERROR_PROPAGATE( find_device( device_id, & device ));	187	ERROR_PROPAGATE( find_device( device_id, & device ));
188	if( device->state != NETIF_ACTIVE ){	188	if( device->state != NETIF_ACTIVE ){
189	netif_pq_release( packet_get_id( packet ));	189	netif_pq_release( packet_get_id( packet ));
190	return EFORWARD;	190	return EFORWARD;
191	}	191	}
192	next = packet;	192	next = packet;
193	do{	193	do{
194	++ (( device_stats_ref ) device->specific )->send_packets;	194	++ (( device_stats_ref ) device->specific )->send_packets;
195	++ (( device_stats_ref ) device->specific )->receive_packets;	195	++ (( device_stats_ref ) device->specific )->receive_packets;
196	length = packet_get_data_length( next );	196	length = packet_get_data_length( next );
197	(( device_stats_ref ) device->specific )->send_bytes += length;	197	(( device_stats_ref ) device->specific )->send_bytes += length;
198	(( device_stats_ref ) device->specific )->receive_bytes += length;	198	(( device_stats_ref ) device->specific )->receive_bytes += length;
199	next = pq_next( next );	199	next = pq_next( next );
200	}while( next );	200	}while( next );
201	phone = device->nil_phone;	201	phone = device->nil_phone;
202	fibril_rwlock_write_unlock( & netif_globals.lock );	202	fibril_rwlock_write_unlock( & netif_globals.lock );
203	nil_received_msg( phone, device_id, packet, sender );	203	nil_received_msg( phone, device_id, packet, sender );
204	fibril_rwlock_write_lock( & netif_globals.lock );	204	fibril_rwlock_write_lock( & netif_globals.lock );
205	return EOK;	205	return EOK;
206	}	206	}
207		207
208	int netif_start_message( device_ref device ){	208	int netif_start_message( device_ref device ){
209	return change_state_message( device, NETIF_ACTIVE );	209	return change_state_message( device, NETIF_ACTIVE );
210	}	210	}
211		211
212	int netif_stop_message( device_ref device ){	212	int netif_stop_message( device_ref device ){
213	return change_state_message( device, NETIF_STOPPED );	213	return change_state_message( device, NETIF_STOPPED );
214	}	214	}
215		215
216	/** @}	216	/** @}
217	*/	217	*/
218		218

Subversion Repositories HelenOS

(root)/branches/network/uspace/srv/net/netif/lo/lo.c – Rev 4731 → 4756