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 device The device structure. Input parameter.
 *  @param state The new device state. Input parameter.
 *  @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 device_id The new devce identifier. Input parameter.
 *  @param device The device structure. Output parameter.
 *  @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 ) return EPERM;
    next = packet;
    do{
        ++ (( device_stats_ref ) device->specific )->tx_packets;
        ++ (( device_stats_ref ) device->specific )->rx_packets;
        length = packet_get_data_length( next );
        (( device_stats_ref ) device->specific )->tx_bytes += length;
        (( device_stats_ref ) device->specific )->rx_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 4703	Rev 4722
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	#include "../../include/net_interface.h"	-
55		54
56	#include "../../nil/nil_messages.h"	55	#include "../../nil/nil_messages.h"
57		56
58	#include "../netif.h"	57	#include "../netif.h"
59	#include "../netif_module.h"	58	#include "../netif_module.h"
60		59
61	/** Default hardware address.	60	/** Default hardware address.
62	*/	61	*/
63	#define DEFAULT_ADDR "\0\0\0\0\0\0"	62	#define DEFAULT_ADDR "\0\0\0\0\0\0"
64		63
65	/** Default address length.	64	/** Default address length.
66	*/	65	*/
67	#define DEFAULT_ADDR_LEN ( sizeof( DEFAULT_ADDR ) / sizeof( char ))	66	#define DEFAULT_ADDR_LEN ( sizeof( DEFAULT_ADDR ) / sizeof( char ))
68		67
69	/** Loopback module name.	68	/** Loopback module name.
70	*/	69	*/
71	#define NAME "lo - loopback interface"	70	#define NAME "lo - loopback interface"
72		71
73	/** Network interface global data.	72	/** Network interface global data.
74	*/	73	*/
75	netif_globals_t netif_globals;	74	netif_globals_t netif_globals;
76		75
77	/** Changes the loopback state.	76	/** Changes the loopback state.
78	* @param device The device structure. Input parameter.	77	* @param device The device structure. Input parameter.
79	* @param state The new device state. Input parameter.	78	* @param state The new device state. Input parameter.
80	* @returns The new state if changed.	79	* @returns The new state if changed.
81	* @returns EOK otherwise.	80	* @returns EOK otherwise.
82	*/	81	*/
83	int change_state_message( device_ref device, device_state_t state );	82	int change_state_message( device_ref device, device_state_t state );
84		83
85	/** Creates and returns the loopback network interface structure.	84	/** Creates and returns the loopback network interface structure.
86	* @param device_id The new devce identifier. Input parameter.	85	* @param device_id The new devce identifier. Input parameter.
87	* @param device The device structure. Output parameter.	86	* @param device The device structure. Output parameter.
88	* @returns EOK on success.	87	* @returns EOK on success.
89	* @returns EXDEV if one loopback network interface already exists.	88	* @returns EXDEV if one loopback network interface already exists.
90	* @returns ENOMEM if there is not enough memory left.	89	* @returns ENOMEM if there is not enough memory left.
91	*/	90	*/
92	int create( device_id_t device_id, device_ref * device );	91	int create( device_id_t device_id, device_ref * device );
93		92
94	/** Prints the module name.	93	/** Prints the module name.
95	* @see NAME	94	* @see NAME
96	*/	95	*/
97	void module_print_name( void );	96	void module_print_name( void );
98		97
99	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 ){
100	return ENOTSUP;	99	return ENOTSUP;
101	}	100	}
102		101
103	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 ){
104	if( ! address ) return EBADMEM;	103	if( ! address ) return EBADMEM;
105	address->value = DEFAULT_ADDR;	104	address->value = DEFAULT_ADDR;
106	address->length = DEFAULT_ADDR_LEN;	105	address->length = DEFAULT_ADDR_LEN;
107	return EOK;	106	return EOK;
108	}	107	}
109		108
110	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 ){
111	ERROR_DECLARE;	110	ERROR_DECLARE;
112		111
113	device_ref device;	112	device_ref device;
114		113
115	if( ! stats ) return EBADMEM;	114	if( ! stats ) return EBADMEM;
116	ERROR_PROPAGATE( find_device( device_id, & device ));	115	ERROR_PROPAGATE( find_device( device_id, & device ));
117	memcpy( stats, ( device_stats_ref ) device->specific, sizeof( device_stats_t ));	116	memcpy( stats, ( device_stats_ref ) device->specific, sizeof( device_stats_t ));
118	return EOK;	117	return EOK;
119	}	118	}
120		119
121	int change_state_message( device_ref device, device_state_t state ){	120	int change_state_message( device_ref device, device_state_t state ){
122	if( device->state != state ){	121	if( device->state != state ){
123	device->state = state;	122	device->state = state;
124	printf( "State changed to %s\n", ( state == NETIF_ACTIVE ) ? "ACTIVE" : "STOPPED" );	123	printf( "State changed to %s\n", ( state == NETIF_ACTIVE ) ? "ACTIVE" : "STOPPED" );
125	return state;	124	return state;
126	}	125	}
127	return EOK;	126	return EOK;
128	}	127	}
129		128
130	int create( device_id_t device_id, device_ref * device ){	129	int create( device_id_t device_id, device_ref * device ){
131	int index;	130	int index;
132		131
133	if( device_map_count( & netif_globals.device_map ) > 0 ){	132	if( device_map_count( & netif_globals.device_map ) > 0 ){
134	return EXDEV;	133	return EXDEV;
135	}else{	134	}else{
136	* device = ( device_ref ) malloc( sizeof( device_t ));	135	* device = ( device_ref ) malloc( sizeof( device_t ));
137	if( !( * device )) return ENOMEM;	136	if( !( * device )) return ENOMEM;
138	( ** device ).specific = malloc( sizeof( device_stats_t ));	137	( ** device ).specific = malloc( sizeof( device_stats_t ));
139	if( ! ( ** device ).specific ){	138	if( ! ( ** device ).specific ){
140	free( * device );	139	free( * device );
141	return ENOMEM;	140	return ENOMEM;
142	}	141	}
143	null_device_stats(( device_stats_ref )( ** device ).specific );	142	null_device_stats(( device_stats_ref )( ** device ).specific );
144	( ** device ).device_id = device_id;	143	( ** device ).device_id = device_id;
145	( ** device ).nil_phone = -1;	144	( ** device ).nil_phone = -1;
146	( ** device ).state = NETIF_STOPPED;	145	( ** device ).state = NETIF_STOPPED;
147	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 );
148	if( index < 0 ){	147	if( index < 0 ){
149	free( * device );	148	free( * device );
150	free(( ** device ).specific );	149	free(( ** device ).specific );
151	* device = NULL;	150	* device = NULL;
152	return index;	151	return index;
153	}	152	}
154	}	153	}
155	return EOK;	154	return EOK;
156	}	155	}
157		156
158	int netif_initialize( void ){	157	int netif_initialize( void ){
159	ipcarg_t phonehash;	158	ipcarg_t phonehash;
160		159
161	return REGISTER_ME( SERVICE_LO, & phonehash );	160	return REGISTER_ME( SERVICE_LO, & phonehash );
162	}	161	}
163		162
164	void module_print_name( void ){	163	void module_print_name( void ){
165	printf( "%s", NAME );	164	printf( "%s", NAME );
166	}	165	}
167		166
168	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 ){
169	ERROR_DECLARE;	168	ERROR_DECLARE;
170		169
171	device_ref device;	170	device_ref device;
172		171
173	// create a new device	172	// create a new device
174	ERROR_PROPAGATE( create( device_id, & device ));	173	ERROR_PROPAGATE( create( device_id, & device ));
175	// print the settings	174	// print the settings
176	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 );
177	return EOK;	176	return EOK;
178	}	177	}
179		178
180	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 ){
181	ERROR_DECLARE;	180	ERROR_DECLARE;
182		181
183	device_ref device;	182	device_ref device;
184	size_t length;	183	size_t length;
185	packet_t next;	184	packet_t next;
186	int phone;	185	int phone;
187		186
188	ERROR_PROPAGATE( find_device( device_id, & device ));	187	ERROR_PROPAGATE( find_device( device_id, & device ));
189	if( device->state != NETIF_ACTIVE ) return EPERM;	188	if( device->state != NETIF_ACTIVE ) return EPERM;
190	next = packet;	189	next = packet;
191	do{	190	do{
192	++ (( device_stats_ref ) device->specific )->tx_packets;	191	++ (( device_stats_ref ) device->specific )->tx_packets;
193	++ (( device_stats_ref ) device->specific )->rx_packets;	192	++ (( device_stats_ref ) device->specific )->rx_packets;
194	length = packet_get_data_length( next );	193	length = packet_get_data_length( next );
195	(( device_stats_ref ) device->specific )->tx_bytes += length;	194	(( device_stats_ref ) device->specific )->tx_bytes += length;
196	(( device_stats_ref ) device->specific )->rx_bytes += length;	195	(( device_stats_ref ) device->specific )->rx_bytes += length;
197	next = pq_next( next );	196	next = pq_next( next );
198	}while( next );	197	}while( next );
199	phone = device->nil_phone;	198	phone = device->nil_phone;
200	fibril_rwlock_write_unlock( & netif_globals.lock );	199	fibril_rwlock_write_unlock( & netif_globals.lock );
201	nil_received_msg( phone, device_id, packet, sender );	200	nil_received_msg( phone, device_id, packet, sender );
202	fibril_rwlock_write_lock( & netif_globals.lock );	201	fibril_rwlock_write_lock( & netif_globals.lock );
203	return EOK;	202	return EOK;
204	}	203	}
205		204
206	int netif_start_message( device_ref device ){	205	int netif_start_message( device_ref device ){
207	return change_state_message( device, NETIF_ACTIVE );	206	return change_state_message( device, NETIF_ACTIVE );
208	}	207	}
209		208
210	int netif_stop_message( device_ref device ){	209	int netif_stop_message( device_ref device ){
211	return change_state_message( device, NETIF_STOPPED );	210	return change_state_message( device, NETIF_STOPPED );
212	}	211	}
213		212
214	/** @}	213	/** @}
215	*/	214	*/
216		215

Subversion Repositories HelenOS

(root)/branches/network/uspace/srv/net/netif/lo/lo.c @ 4728 – Rev 4703 → 4722