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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 | * 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" |
54 | #include "../../include/net_interface.h" |
55 | 55 | ||
56 | #include "../../nil/nil_messages.h" |
56 | #include "../../nil/nil_messages.h" |
57 | 57 | ||
58 | #include "../netif.h" |
58 | #include "../netif.h" |
59 | #include "../netif_module.h" |
59 | #include "../netif_module.h" |
60 | 60 | ||
61 | /** Default maximum transmission unit. |
- | |
62 | */ |
- | |
63 | #define DEFAULT_MTU 1500 |
- | |
64 | - | ||
65 | /** Default hardware address. |
61 | /** Default hardware address. |
66 | */ |
62 | */ |
67 | #define DEFAULT_ADDR "\0\0\0\0\0\0" |
63 | #define DEFAULT_ADDR "\0\0\0\0\0\0" |
68 | 64 | ||
69 | /** Default address length. |
65 | /** Default address length. |
70 | */ |
66 | */ |
71 | #define DEFAULT_ADDR_LEN ( sizeof( DEFAULT_ADDR ) / sizeof( char )) |
67 | #define DEFAULT_ADDR_LEN ( sizeof( DEFAULT_ADDR ) / sizeof( char )) |
72 | 68 | ||
73 | /** Loopback module name. |
69 | /** Loopback module name. |
74 | */ |
70 | */ |
75 | #define NAME "lo - loopback interface" |
71 | #define NAME "lo - loopback interface" |
76 | 72 | ||
77 | /** Network interface global data. |
73 | /** Network interface global data. |
78 | */ |
74 | */ |
79 | netif_globals_t netif_globals; |
75 | netif_globals_t netif_globals; |
80 | 76 | ||
81 | /** Loopback module global data. |
- | |
82 | */ |
- | |
83 | static struct lo_globals{ |
- | |
84 | unsigned int mtu; |
- | |
85 | } lo_globals; |
- | |
86 | - | ||
87 | /** Changes the loopback state. |
77 | /** Changes the loopback state. |
88 | * @param device The device structure. Input parameter. |
78 | * @param device The device structure. Input parameter. |
89 | * @param state The new device state. Input parameter. |
79 | * @param state The new device state. Input parameter. |
90 | * @returns The new state if changed. |
80 | * @returns The new state if changed. |
91 | * @returns EOK otherwise. |
81 | * @returns EOK otherwise. |
92 | */ |
82 | */ |
93 | int change_state_message( device_ref device, device_state_t state ); |
83 | int change_state_message( device_ref device, device_state_t state ); |
94 | 84 | ||
95 | /** Creates and returns the loopback network interface structure. |
85 | /** Creates and returns the loopback network interface structure. |
96 | * @param device_id The new devce identifier. Input parameter. |
86 | * @param device_id The new devce identifier. Input parameter. |
97 | * @param device The device structure. Output parameter. |
87 | * @param device The device structure. Output parameter. |
98 | * @returns EOK on success. |
88 | * @returns EOK on success. |
99 | * @returns EXDEV if one loopback network interface already exists. |
89 | * @returns EXDEV if one loopback network interface already exists. |
100 | * @returns ENOMEM if there is not enough memory left. |
90 | * @returns ENOMEM if there is not enough memory left. |
101 | */ |
91 | */ |
102 | int create( device_id_t device_id, device_ref * device ); |
92 | int create( device_id_t device_id, device_ref * device ); |
103 | 93 | ||
104 | /** Prints the module name. |
94 | /** Prints the module name. |
105 | * @see NAME |
95 | * @see NAME |
106 | */ |
96 | */ |
107 | void module_print_name( void ); |
97 | void module_print_name( void ); |
108 | 98 | ||
109 | int netif_specific_message( ipc_callid_t callid, ipc_call_t * call, ipc_call_t * answer, int * answer_count ){ |
99 | int netif_specific_message( ipc_callid_t callid, ipc_call_t * call, ipc_call_t * answer, int * answer_count ){ |
110 | switch( IPC_GET_METHOD( * call )){ |
- | |
111 | case NET_NIL_PACKET_SPACE: |
- | |
112 | * IPC_SET_ADDR( answer ) = 0; |
- | |
113 | * IPC_SET_PREFIX( answer ) = 0; |
- | |
114 | * IPC_SET_CONTENT( answer ) = lo_globals.mtu; |
- | |
115 | * IPC_SET_SUFFIX( answer ) = 0; |
- | |
116 | * answer_count = 4; |
- | |
117 | return EOK; |
- | |
118 | default: |
- | |
119 | return ENOTSUP; |
100 | return ENOTSUP; |
120 | } |
- | |
121 | } |
101 | } |
122 | 102 | ||
123 | int netif_get_addr_message( device_id_t device_id, measured_string_ref address ){ |
103 | int netif_get_addr_message( device_id_t device_id, measured_string_ref address ){ |
124 | if( ! address ) return EBADMEM; |
104 | if( ! address ) return EBADMEM; |
125 | address->value = DEFAULT_ADDR; |
105 | address->value = DEFAULT_ADDR; |
126 | address->length = DEFAULT_ADDR_LEN; |
106 | address->length = DEFAULT_ADDR_LEN; |
127 | return EOK; |
107 | return EOK; |
128 | } |
108 | } |
129 | 109 | ||
130 | int netif_get_device_stats( device_id_t device_id, device_stats_ref stats ){ |
110 | int netif_get_device_stats( device_id_t device_id, device_stats_ref stats ){ |
131 | ERROR_DECLARE; |
111 | ERROR_DECLARE; |
132 | 112 | ||
133 | device_ref device; |
113 | device_ref device; |
134 | 114 | ||
135 | if( ! stats ) return EBADMEM; |
115 | if( ! stats ) return EBADMEM; |
136 | ERROR_PROPAGATE( find_device( device_id, & device )); |
116 | ERROR_PROPAGATE( find_device( device_id, & device )); |
137 | memcpy( stats, ( device_stats_ref ) device->specific, sizeof( device_stats_t )); |
117 | memcpy( stats, ( device_stats_ref ) device->specific, sizeof( device_stats_t )); |
138 | return EOK; |
118 | return EOK; |
139 | } |
119 | } |
140 | 120 | ||
141 | int change_state_message( device_ref device, device_state_t state ){ |
121 | int change_state_message( device_ref device, device_state_t state ){ |
142 | if( device->state != state ){ |
122 | if( device->state != state ){ |
143 | device->state = state; |
123 | device->state = state; |
144 | printf( "State changed to %s\n", ( state == NETIF_ACTIVE ) ? "ACTIVE" : "STOPPED" ); |
124 | printf( "State changed to %s\n", ( state == NETIF_ACTIVE ) ? "ACTIVE" : "STOPPED" ); |
145 | return state; |
125 | return state; |
146 | } |
126 | } |
147 | return EOK; |
127 | return EOK; |
148 | } |
128 | } |
149 | 129 | ||
150 | int create( device_id_t device_id, device_ref * device ){ |
130 | int create( device_id_t device_id, device_ref * device ){ |
151 | int index; |
131 | int index; |
152 | 132 | ||
153 | if( device_map_count( & netif_globals.device_map ) > 0 ){ |
133 | if( device_map_count( & netif_globals.device_map ) > 0 ){ |
154 | return EXDEV; |
134 | return EXDEV; |
155 | }else{ |
135 | }else{ |
156 | * device = ( device_ref ) malloc( sizeof( device_t )); |
136 | * device = ( device_ref ) malloc( sizeof( device_t )); |
157 | if( !( * device )) return ENOMEM; |
137 | if( !( * device )) return ENOMEM; |
158 | ( ** device ).specific = malloc( sizeof( device_stats_t )); |
138 | ( ** device ).specific = malloc( sizeof( device_stats_t )); |
159 | if( ! ( ** device ).specific ){ |
139 | if( ! ( ** device ).specific ){ |
160 | free( * device ); |
140 | free( * device ); |
161 | return ENOMEM; |
141 | return ENOMEM; |
162 | } |
142 | } |
163 | null_device_stats(( device_stats_ref )( ** device ).specific ); |
143 | null_device_stats(( device_stats_ref )( ** device ).specific ); |
164 | ( ** device ).device_id = device_id; |
144 | ( ** device ).device_id = device_id; |
165 | ( ** device ).nil_phone = -1; |
145 | ( ** device ).nil_phone = -1; |
166 | ( ** device ).state = NETIF_STOPPED; |
146 | ( ** device ).state = NETIF_STOPPED; |
167 | index = device_map_add( & netif_globals.device_map, ( ** device ).device_id, * device ); |
147 | index = device_map_add( & netif_globals.device_map, ( ** device ).device_id, * device ); |
168 | if( index < 0 ){ |
148 | if( index < 0 ){ |
169 | free( * device ); |
149 | free( * device ); |
170 | free(( ** device ).specific ); |
150 | free(( ** device ).specific ); |
171 | * device = NULL; |
151 | * device = NULL; |
172 | return index; |
152 | return index; |
173 | } |
153 | } |
174 | } |
154 | } |
175 | return EOK; |
155 | return EOK; |
176 | } |
156 | } |
177 | 157 | ||
178 | int netif_initialize( void ){ |
158 | int netif_initialize( void ){ |
179 | ipcarg_t phonehash; |
159 | ipcarg_t phonehash; |
180 | 160 | ||
181 | return REGISTER_ME( SERVICE_LO, & phonehash ); |
161 | return REGISTER_ME( SERVICE_LO, & phonehash ); |
182 | } |
162 | } |
183 | 163 | ||
184 | void module_print_name( void ){ |
164 | void module_print_name( void ){ |
185 | printf( "%s", NAME ); |
165 | printf( "%s", NAME ); |
186 | } |
166 | } |
187 | 167 | ||
188 | int netif_probe_auto_message( void ){ |
168 | int netif_probe_auto_message( void ){ |
189 | /* ERROR_DECLARE; |
169 | /* ERROR_DECLARE; |
190 | 170 | ||
191 | device_ref device; |
171 | device_ref device; |
192 | 172 | ||
193 | ERROR_PROPAGATE( create( arg1, & device )); |
173 | ERROR_PROPAGATE( create( arg1, & device )); |
194 | ipc_call_sync_3_3( netif_globals.net_phone, NET_NET_DEVICE, device->device_id, NULL, NULL, NULL, NULL, NULL ); |
174 | ipc_call_sync_3_3( netif_globals.net_phone, NET_NET_DEVICE, device->device_id, NULL, NULL, NULL, NULL, NULL ); |
195 | */ return ENOTSUP; |
175 | */ return ENOTSUP; |
196 | } |
176 | } |
197 | 177 | ||
198 | int netif_probe_message( device_id_t device_id, int irq, int io ){ |
178 | int netif_probe_message( device_id_t device_id, int irq, int io ){ |
199 | ERROR_DECLARE; |
179 | ERROR_DECLARE; |
200 | 180 | ||
201 | device_ref device; |
181 | device_ref device; |
202 | measured_string_t names[ 1 ] = {{ "MTU", 3 }}; |
- | |
203 | measured_string_ref configuration; |
- | |
204 | size_t count = sizeof( names ) / sizeof( measured_string_t ); |
- | |
205 | char * data; |
- | |
206 | 182 | ||
207 | configuration = & names[ 0 ]; |
- | |
208 | // create a new device |
183 | // create a new device |
209 | ERROR_PROPAGATE( create( device_id, & device )); |
184 | ERROR_PROPAGATE( create( device_id, & device )); |
210 | // get configuration |
- | |
211 | ERROR_PROPAGATE( net_get_device_conf_req( netif_globals.net_phone, device->device_id, & configuration, count, & data )); |
- | |
212 | // MTU is the first one |
- | |
213 | if( configuration && configuration[ 0 ].value ){ |
- | |
214 | lo_globals.mtu = strtoul( configuration[ 0 ].value, NULL, 0 ); |
- | |
215 | net_free_settings( configuration, data ); |
- | |
216 | }else{ |
- | |
217 | lo_globals.mtu = DEFAULT_MTU; |
- | |
218 | } |
- | |
219 | // print the settings |
185 | // print the settings |
220 | printf("New device registered:\n\tid\t= %d\n\tMTU\t= %d\n", device->device_id, lo_globals.mtu ); |
186 | printf("New device created:\n\tid\t= %d\n", device->device_id ); |
221 | return EOK; |
187 | return EOK; |
222 | } |
188 | } |
223 | 189 | ||
224 | int netif_send_message( device_id_t device_id, packet_t packet, services_t sender ){ |
190 | int netif_send_message( device_id_t device_id, packet_t packet, services_t sender ){ |
225 | ERROR_DECLARE; |
191 | ERROR_DECLARE; |
226 | 192 | ||
227 | device_ref device; |
193 | device_ref device; |
228 | size_t length; |
194 | size_t length; |
229 | packet_t next; |
195 | packet_t next; |
230 | int phone; |
196 | int phone; |
231 | 197 | ||
232 | ERROR_PROPAGATE( find_device( device_id, & device )); |
198 | ERROR_PROPAGATE( find_device( device_id, & device )); |
233 | if( device->state != NETIF_ACTIVE ) return EPERM; |
199 | if( device->state != NETIF_ACTIVE ) return EPERM; |
234 | next = packet; |
200 | next = packet; |
235 | do{ |
201 | do{ |
236 | ++ (( device_stats_ref ) device->specific )->tx_packets; |
202 | ++ (( device_stats_ref ) device->specific )->tx_packets; |
237 | ++ (( device_stats_ref ) device->specific )->rx_packets; |
203 | ++ (( device_stats_ref ) device->specific )->rx_packets; |
238 | length = packet_get_data_length( next ); |
204 | length = packet_get_data_length( next ); |
239 | (( device_stats_ref ) device->specific )->tx_bytes += length; |
205 | (( device_stats_ref ) device->specific )->tx_bytes += length; |
240 | (( device_stats_ref ) device->specific )->rx_bytes += length; |
206 | (( device_stats_ref ) device->specific )->rx_bytes += length; |
241 | next = pq_next( next ); |
207 | next = pq_next( next ); |
242 | }while( next ); |
208 | }while( next ); |
243 | phone = device->nil_phone; |
209 | phone = device->nil_phone; |
244 | fibril_rwlock_write_unlock( & netif_globals.lock ); |
210 | fibril_rwlock_write_unlock( & netif_globals.lock ); |
245 | nil_received_msg( phone, device_id, packet, sender ); |
211 | nil_received_msg( phone, device_id, packet, sender ); |
246 | fibril_rwlock_write_lock( & netif_globals.lock ); |
212 | fibril_rwlock_write_lock( & netif_globals.lock ); |
247 | return EOK; |
213 | return EOK; |
248 | } |
214 | } |
249 | 215 | ||
250 | int netif_start_message( device_ref device ){ |
216 | int netif_start_message( device_ref device ){ |
251 | return change_state_message( device, NETIF_ACTIVE ); |
217 | return change_state_message( device, NETIF_ACTIVE ); |
252 | } |
218 | } |
253 | 219 | ||
254 | int netif_stop_message( device_ref device ){ |
220 | int netif_stop_message( device_ref device ){ |
255 | return change_state_message( device, NETIF_STOPPED ); |
221 | return change_state_message( device, NETIF_STOPPED ); |
256 | } |
222 | } |
257 | 223 | ||
258 | /** @} |
224 | /** @} |
259 | */ |
225 | */ |
260 | 226 |