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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 | */ |
35 | */ |
35 | 36 | ||
36 | #include <async.h> |
37 | #include <async.h> |
37 | #include <errno.h> |
38 | #include <errno.h> |
38 | #include <stdio.h> |
39 | #include <stdio.h> |
39 | 40 | ||
40 | #include <ipc/ipc.h> |
41 | #include <ipc/ipc.h> |
41 | #include <ipc/services.h> |
42 | #include <ipc/services.h> |
42 | 43 | ||
43 | #include "../../err.h" |
44 | #include "../../err.h" |
44 | #include "../../messages.h" |
45 | #include "../../messages.h" |
45 | #include "../../modules.h" |
46 | #include "../../modules.h" |
46 | 47 | ||
47 | #include "../../structures/measured_strings.h" |
48 | #include "../../structures/measured_strings.h" |
48 | #include "../../structures/packet/packet_client.h" |
49 | #include "../../structures/packet/packet_client.h" |
49 | 50 | ||
50 | #include "../../include/device.h" |
51 | #include "../../include/device.h" |
51 | #include "../../include/nil_interface.h" |
52 | #include "../../include/nil_interface.h" |
52 | #include "../../include/net_interface.h" |
53 | #include "../../include/net_interface.h" |
53 | 54 | ||
54 | #include "../netif.h" |
55 | #include "../netif.h" |
55 | #include "../netif_module.h" |
56 | #include "../netif_module.h" |
56 | 57 | ||
- | 58 | /** Default maximum transmission unit. |
|
- | 59 | */ |
|
57 | #define DEFAULT_MTU 1500 |
60 | #define DEFAULT_MTU 1500 |
58 | 61 | ||
- | 62 | /** Default hardware address. |
|
- | 63 | */ |
|
59 | #define DEFAULT_ADDR "\0\0\0\0\0\0" |
64 | #define DEFAULT_ADDR "\0\0\0\0\0\0" |
- | 65 | ||
- | 66 | /** Default address length. |
|
- | 67 | */ |
|
60 | #define DEFAULT_ADDR_LEN ( sizeof( DEFAULT_ADDR ) / sizeof( char )) |
68 | #define DEFAULT_ADDR_LEN ( sizeof( DEFAULT_ADDR ) / sizeof( char )) |
61 | 69 | ||
- | 70 | /** Loopback module name. |
|
- | 71 | */ |
|
62 | #define NAME "lo - loopback interface" |
72 | #define NAME "lo - loopback interface" |
63 | 73 | ||
- | 74 | /** Network interface global data. |
|
- | 75 | */ |
|
64 | netif_globals_t netif_globals; |
76 | netif_globals_t netif_globals; |
65 | 77 | ||
- | 78 | /** Loopback module global data. |
|
- | 79 | */ |
|
66 | static struct lo_globals{ |
80 | static struct lo_globals{ |
67 | unsigned int mtu; |
81 | unsigned int mtu; |
68 | } lo_globals; |
82 | } lo_globals; |
69 | 83 | ||
- | 84 | /** Changes the loopback state. |
|
- | 85 | * @param device The device structure. Input parameter. |
|
- | 86 | * @param state The new device state. Input parameter. |
|
- | 87 | * @returns The new state if changed. |
|
- | 88 | * @returns EOK otherwise. |
|
- | 89 | */ |
|
70 | static int change_state_message( device_ref device, device_state_t state ); |
90 | int change_state_message( device_ref device, device_state_t state ); |
- | 91 | ||
- | 92 | /** Creates and returns the loopback network interface structure. |
|
- | 93 | * @param device_id The new devce identifier. Input parameter. |
|
- | 94 | * @param device The device structure. Output parameter. |
|
- | 95 | * @returns EOK on success. |
|
- | 96 | * @returns EXDEV if one loopback network interface already exists. |
|
- | 97 | * @returns ENOMEM if there is not enough memory left. |
|
- | 98 | */ |
|
71 | static int create( device_id_t device_id, device_ref * device ); |
99 | int create( device_id_t device_id, device_ref * device ); |
- | 100 | ||
- | 101 | /** Prints the module name. |
|
- | 102 | * @see NAME |
|
- | 103 | */ |
|
72 | void module_print_name( void ); |
104 | void module_print_name( void ); |
73 | 105 | ||
74 | int netif_specific_message( ipc_callid_t callid, ipc_call_t * call, ipc_call_t * answer, int * answer_count ){ |
106 | int netif_specific_message( ipc_callid_t callid, ipc_call_t * call, ipc_call_t * answer, int * answer_count ){ |
75 | //TODO nil send message |
107 | //TODO nil send message |
76 | return ENOTSUP; |
108 | return ENOTSUP; |
77 | } |
109 | } |
78 | 110 | ||
79 | int netif_get_addr_message( device_id_t device_id, measured_string_ref address ){ |
111 | int netif_get_addr_message( device_id_t device_id, measured_string_ref address ){ |
80 | if( ! address ) return EBADMEM; |
112 | if( ! address ) return EBADMEM; |
81 | address->value = DEFAULT_ADDR; |
113 | address->value = DEFAULT_ADDR; |
82 | address->length = DEFAULT_ADDR_LEN; |
114 | address->length = DEFAULT_ADDR_LEN; |
83 | return EOK; |
115 | return EOK; |
84 | } |
116 | } |
85 | 117 | ||
86 | int netif_get_device_stats( device_id_t device_id, device_stats_ref stats ){ |
118 | int netif_get_device_stats( device_id_t device_id, device_stats_ref stats ){ |
87 | ERROR_DECLARE; |
119 | ERROR_DECLARE; |
88 | 120 | ||
89 | device_ref device; |
121 | device_ref device; |
90 | 122 | ||
91 | if( ! stats ) return EBADMEM; |
123 | if( ! stats ) return EBADMEM; |
92 | ERROR_PROPAGATE( find_device( device_id, & device )); |
124 | ERROR_PROPAGATE( find_device( device_id, & device )); |
93 | memcpy( stats, ( device_stats_ref ) device->specific, sizeof( device_stats_t )); |
125 | memcpy( stats, ( device_stats_ref ) device->specific, sizeof( device_stats_t )); |
94 | return EOK; |
126 | return EOK; |
95 | } |
127 | } |
96 | 128 | ||
97 | static int change_state_message( device_ref device, device_state_t state ){ |
129 | int change_state_message( device_ref device, device_state_t state ){ |
98 | if( device->state != state ){ |
130 | if( device->state != state ){ |
99 | device->state = state; |
131 | device->state = state; |
100 | printf( "State changed to %s\n", ( state == NETIF_ACTIVE ) ? "ACTIVE" : "STOPPED" ); |
132 | printf( "State changed to %s\n", ( state == NETIF_ACTIVE ) ? "ACTIVE" : "STOPPED" ); |
101 | return state; |
133 | return state; |
102 | } |
134 | } |
103 | return EOK; |
135 | return EOK; |
104 | } |
136 | } |
105 | 137 | ||
106 | static int create( device_id_t device_id, device_ref * device ){ |
138 | int create( device_id_t device_id, device_ref * device ){ |
107 | int index; |
139 | int index; |
108 | 140 | ||
109 | if( device_map_count( & netif_globals.device_map ) > 0 ){ |
141 | if( device_map_count( & netif_globals.device_map ) > 0 ){ |
110 | return EXDEV; |
142 | return EXDEV; |
111 | }else{ |
143 | }else{ |
112 | * device = ( device_ref ) malloc( sizeof( device_t )); |
144 | * device = ( device_ref ) malloc( sizeof( device_t )); |
113 | if( !( * device )) return ENOMEM; |
145 | if( !( * device )) return ENOMEM; |
114 | ( ** device ).specific = malloc( sizeof( device_stats_t )); |
146 | ( ** device ).specific = malloc( sizeof( device_stats_t )); |
115 | if( ! ( ** device ).specific ){ |
147 | if( ! ( ** device ).specific ){ |
116 | free( * device ); |
148 | free( * device ); |
117 | return ENOMEM; |
149 | return ENOMEM; |
118 | } |
150 | } |
119 | null_device_stats(( device_stats_ref )( ** device ).specific ); |
151 | null_device_stats(( device_stats_ref )( ** device ).specific ); |
120 | ( ** device ).device_id = device_id; |
152 | ( ** device ).device_id = device_id; |
121 | ( ** device ).nil_phone = -1; |
153 | ( ** device ).nil_phone = -1; |
122 | ( ** device ).state = NETIF_STOPPED; |
154 | ( ** device ).state = NETIF_STOPPED; |
123 | index = device_map_add( & netif_globals.device_map, ( ** device ).device_id, * device ); |
155 | index = device_map_add( & netif_globals.device_map, ( ** device ).device_id, * device ); |
124 | if( index < 0 ){ |
156 | if( index < 0 ){ |
125 | free( * device ); |
157 | free( * device ); |
126 | free(( ** device ).specific ); |
158 | free(( ** device ).specific ); |
127 | * device = NULL; |
159 | * device = NULL; |
128 | return index; |
160 | return index; |
129 | } |
161 | } |
130 | } |
162 | } |
131 | return EOK; |
163 | return EOK; |
132 | } |
164 | } |
133 | 165 | ||
134 | int netif_initialize( void ){ |
166 | int netif_initialize( void ){ |
135 | ipcarg_t phonehash; |
167 | ipcarg_t phonehash; |
136 | 168 | ||
137 | return REGISTER_ME( SERVICE_LO, & phonehash ); |
169 | return REGISTER_ME( SERVICE_LO, & phonehash ); |
138 | } |
170 | } |
139 | 171 | ||
140 | void module_print_name( void ){ |
172 | void module_print_name( void ){ |
141 | printf( "%s", NAME ); |
173 | printf( "%s", NAME ); |
142 | } |
174 | } |
143 | 175 | ||
144 | int netif_probe_auto_message( void ){ |
176 | int netif_probe_auto_message( void ){ |
145 | /* ERROR_DECLARE; |
177 | /* ERROR_DECLARE; |
146 | 178 | ||
147 | device_ref device; |
179 | device_ref device; |
148 | 180 | ||
149 | ERROR_PROPAGATE( create( arg1, & device )); |
181 | ERROR_PROPAGATE( create( arg1, & device )); |
150 | ipc_call_sync_3_3( netif_globals.net_phone, NET_NET_DEVICE, device->device_id, NULL, NULL, NULL, NULL, NULL ); |
182 | ipc_call_sync_3_3( netif_globals.net_phone, NET_NET_DEVICE, device->device_id, NULL, NULL, NULL, NULL, NULL ); |
151 | */ return ENOTSUP; |
183 | */ return ENOTSUP; |
152 | } |
184 | } |
153 | 185 | ||
154 | int netif_probe_message( device_id_t device_id, int irq, int io ){ |
186 | int netif_probe_message( device_id_t device_id, int irq, int io ){ |
155 | ERROR_DECLARE; |
187 | ERROR_DECLARE; |
156 | 188 | ||
157 | device_ref device; |
189 | device_ref device; |
158 | measured_string_t names[ 1 ] = {{ "MTU", 3 }}; |
190 | measured_string_t names[ 1 ] = {{ "MTU", 3 }}; |
159 | measured_string_ref configuration; |
191 | measured_string_ref configuration; |
160 | int count = 1; |
192 | int count = 1; |
161 | char * data; |
193 | char * data; |
162 | 194 | ||
163 | configuration = & names[ 0 ]; |
195 | configuration = & names[ 0 ]; |
164 | // create a new device |
196 | // create a new device |
165 | ERROR_PROPAGATE( create( device_id, & device )); |
197 | ERROR_PROPAGATE( create( device_id, & device )); |
166 | // get configuration |
198 | // get configuration |
167 | ERROR_PROPAGATE( net_get_device_conf_req( netif_globals.net_phone, device->device_id, & configuration, count, & data )); |
199 | ERROR_PROPAGATE( net_get_device_conf_req( netif_globals.net_phone, device->device_id, & configuration, count, & data )); |
168 | // MTU is the first one |
200 | // MTU is the first one |
169 | if( configuration && configuration[ 0 ].value ){ |
201 | if( configuration && configuration[ 0 ].value ){ |
170 | lo_globals.mtu = strtoul( configuration[ 0 ].value, NULL, 0 ); |
202 | lo_globals.mtu = strtoul( configuration[ 0 ].value, NULL, 0 ); |
171 | net_free_settings( configuration, data ); |
203 | net_free_settings( configuration, data ); |
172 | }else{ |
204 | }else{ |
173 | lo_globals.mtu = DEFAULT_MTU; |
205 | lo_globals.mtu = DEFAULT_MTU; |
174 | } |
206 | } |
175 | // print the settings |
207 | // print the settings |
176 | printf("New device registered:\n\tid\t= %d\n\tMTU\t= %d\n", device->device_id, lo_globals.mtu ); |
208 | printf("New device registered:\n\tid\t= %d\n\tMTU\t= %d\n", device->device_id, lo_globals.mtu ); |
177 | return EOK; |
209 | return EOK; |
178 | } |
210 | } |
179 | 211 | ||
180 | int netif_send_message( device_id_t device_id, packet_t packet, services_t sender ){ |
212 | int netif_send_message( device_id_t device_id, packet_t packet, services_t sender ){ |
181 | ERROR_DECLARE; |
213 | ERROR_DECLARE; |
182 | 214 | ||
183 | device_ref device; |
215 | device_ref device; |
184 | size_t length; |
216 | size_t length; |
185 | packet_t next; |
217 | packet_t next; |
186 | int phone; |
218 | int phone; |
187 | 219 | ||
188 | ERROR_PROPAGATE( find_device( device_id, & device )); |
220 | ERROR_PROPAGATE( find_device( device_id, & device )); |
189 | if( device->state != NETIF_ACTIVE ) return EPERM; |
221 | if( device->state != NETIF_ACTIVE ) return EPERM; |
190 | next = packet; |
222 | next = packet; |
191 | do{ |
223 | do{ |
192 | ++ (( device_stats_ref ) device->specific )->tx_packets; |
224 | ++ (( device_stats_ref ) device->specific )->tx_packets; |
193 | ++ (( device_stats_ref ) device->specific )->rx_packets; |
225 | ++ (( device_stats_ref ) device->specific )->rx_packets; |
194 | length = packet_get_data_length( next ); |
226 | length = packet_get_data_length( next ); |
195 | (( device_stats_ref ) device->specific )->tx_bytes += length; |
227 | (( device_stats_ref ) device->specific )->tx_bytes += length; |
196 | (( device_stats_ref ) device->specific )->rx_bytes += length; |
228 | (( device_stats_ref ) device->specific )->rx_bytes += length; |
197 | next = pq_next( next ); |
229 | next = pq_next( next ); |
198 | }while( next ); |
230 | }while( next ); |
199 | phone = device->nil_phone; |
231 | phone = device->nil_phone; |
200 | rwlock_write_unlock( & netif_globals.lock ); |
232 | rwlock_write_unlock( & netif_globals.lock ); |
201 | nil_received_msg( phone, device_id, packet, sender ); |
233 | nil_received_msg( phone, device_id, packet, sender ); |
202 | rwlock_write_lock( & netif_globals.lock ); |
234 | rwlock_write_lock( & netif_globals.lock ); |
203 | return EOK; |
235 | return EOK; |
204 | } |
236 | } |
205 | 237 | ||
206 | int netif_start_message( device_ref device ){ |
238 | int netif_start_message( device_ref device ){ |
207 | return change_state_message( device, NETIF_ACTIVE ); |
239 | return change_state_message( device, NETIF_ACTIVE ); |
208 | } |
240 | } |
209 | 241 | ||
210 | int netif_stop_message( device_ref device ){ |
242 | int netif_stop_message( device_ref device ){ |
211 | return change_state_message( device, NETIF_STOPPED ); |
243 | return change_state_message( device, NETIF_STOPPED ); |
212 | } |
244 | } |
213 | 245 | ||
214 | /** @} |
246 | /** @} |
215 | */ |
247 | */ |
216 | 248 |