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40 | #include <futex.h> |
40 | #include <futex.h> |
41 | //#include <stdio.h> |
41 | //#include <stdio.h> |
42 | #include <unistd.h> |
42 | #include <unistd.h> |
43 | 43 | ||
44 | #include <ipc/ipc.h> |
44 | #include <ipc/ipc.h> |
45 | #include <ipc/services.h> |
- | |
46 | #include <sys/mman.h> |
45 | #include <sys/mman.h> |
47 | 46 | ||
48 | #include "../../err.h" |
47 | #include "../../err.h" |
49 | #include "../../messages.h" |
48 | #include "../../messages.h" |
50 | 49 | ||
Line 54... | Line 53... | ||
54 | 53 | ||
55 | /** Returns the packet identifier message parameter. |
54 | /** Returns the packet identifier message parameter. |
56 | */ |
55 | */ |
57 | #define IPC_GET_ID( call ) ( packet_id_t ) IPC_GET_ARG1( * call ) |
56 | #define IPC_GET_ID( call ) ( packet_id_t ) IPC_GET_ARG1( * call ) |
58 | 57 | ||
59 | /** Returns the owner message parameter. |
- | |
60 | */ |
- | |
61 | #define IPC_GET_OWNER( call ) ( services_t ) IPC_GET_ARG1( * call ) |
- | |
62 | - | ||
63 | /** Returns the maximal content length message parameter. |
58 | /** Returns the maximal content length message parameter. |
64 | */ |
59 | */ |
65 | #define IPC_GET_CONTENT( call ) ( size_t ) IPC_GET_ARG2( * call ) |
60 | #define IPC_GET_CONTENT( call ) ( size_t ) IPC_GET_ARG1( * call ) |
66 | 61 | ||
67 | /** Returns the maximal address length message parameter. |
62 | /** Returns the maximal address length message parameter. |
68 | */ |
63 | */ |
69 | #define IPC_GET_ADDR_LEN( call ) ( size_t ) IPC_GET_ARG3( * call ) |
64 | #define IPC_GET_ADDR_LEN( call ) ( size_t ) IPC_GET_ARG2( * call ) |
70 | 65 | ||
71 | /** Returns the maximal prefix length message parameter. |
66 | /** Returns the maximal prefix length message parameter. |
72 | */ |
67 | */ |
73 | #define IPC_GET_PREFIX( call ) ( size_t ) IPC_GET_ARG4( * call ) |
68 | #define IPC_GET_PREFIX( call ) ( size_t ) IPC_GET_ARG3( * call ) |
74 | 69 | ||
75 | /** Returns the maximal suffix length message parameter. |
70 | /** Returns the maximal suffix length message parameter. |
76 | */ |
71 | */ |
77 | #define IPC_GET_SUFIX( call ) ( size_t ) IPC_GET_ARG5( * call ) |
72 | #define IPC_GET_SUFIX( call ) ( size_t ) IPC_GET_ARG4( * call ) |
78 | 73 | ||
79 | #define FREE_QUEUES_COUNT 7 |
74 | #define FREE_QUEUES_COUNT 7 |
80 | 75 | ||
81 | /** Packet server global data. |
76 | /** Packet server global data. |
82 | */ |
77 | */ |
Line 110... | Line 105... | ||
110 | 105 | ||
111 | /** Returns the packet of dimensions at least as given. |
106 | /** Returns the packet of dimensions at least as given. |
112 | * Tries to reuse free packets first. |
107 | * Tries to reuse free packets first. |
113 | * Creates a new packet aligned to the memory page size if none available. |
108 | * Creates a new packet aligned to the memory page size if none available. |
114 | * Locks the global data during its processing. |
109 | * Locks the global data during its processing. |
115 | * @param owner The new owner of the packet. Input parameter. |
- | |
116 | * @param addr_len The source and destination addresses maximal length in bytes. Input parameter. |
110 | * @param addr_len The source and destination addresses maximal length in bytes. Input parameter. |
117 | * @param max_prefix The maximal prefix length in bytes. Input parameter. |
111 | * @param max_prefix The maximal prefix length in bytes. Input parameter. |
118 | * @param max_content The maximal content length in bytes. Input parameter. |
112 | * @param max_content The maximal content length in bytes. Input parameter. |
119 | * @param max_suffix The maximal suffix length in bytes. Input parameter. |
113 | * @param max_suffix The maximal suffix length in bytes. Input parameter. |
120 | * @returns The packet of dimensions at least as given. |
114 | * @returns The packet of dimensions at least as given. |
121 | * @returns NULL if there is not enough memory left. |
115 | * @returns NULL if there is not enough memory left. |
122 | */ |
116 | */ |
123 | packet_t packet_get( services_t owner, size_t addr_len, size_t max_prefix, size_t max_content, size_t max_suffix ); |
117 | packet_t packet_get( size_t addr_len, size_t max_prefix, size_t max_content, size_t max_suffix ); |
124 | 118 | ||
125 | /** Creates a new packet of dimensions at least as given. |
119 | /** Creates a new packet of dimensions at least as given. |
126 | * Should be used only when the global data are locked. |
120 | * Should be used only when the global data are locked. |
127 | * @param length The total length of the packet, including the header, the addresses and the data of the packet. Input parameter. |
121 | * @param length The total length of the packet, including the header, the addresses and the data of the packet. Input parameter. |
128 | * @param owner The new owner of the packet. Input parameter. |
- | |
129 | * @param addr_len The source and destination addresses maximal length in bytes. Input parameter. |
122 | * @param addr_len The source and destination addresses maximal length in bytes. Input parameter. |
130 | * @param max_prefix The maximal prefix length in bytes. Input parameter. |
123 | * @param max_prefix The maximal prefix length in bytes. Input parameter. |
131 | * @param max_content The maximal content length in bytes. Input parameter. |
124 | * @param max_content The maximal content length in bytes. Input parameter. |
132 | * @param max_suffix The maximal suffix length in bytes. Input parameter. |
125 | * @param max_suffix The maximal suffix length in bytes. Input parameter. |
133 | * @returns The packet of dimensions at least as given. |
126 | * @returns The packet of dimensions at least as given. |
134 | * @returns NULL if there is not enough memory left. |
127 | * @returns NULL if there is not enough memory left. |
135 | */ |
128 | */ |
136 | packet_t packet_create( size_t length, services_t owner, size_t addr_len, size_t max_prefix, size_t max_content, size_t max_suffix ); |
129 | packet_t packet_create( size_t length, size_t addr_len, size_t max_prefix, size_t max_content, size_t max_suffix ); |
137 | 130 | ||
138 | /** Initializes the packet according to the given dimensions. |
131 | /** Initializes the packet according to the given dimensions. |
139 | * @param packet The packet to be initialized. Input parameter. |
132 | * @param packet The packet to be initialized. Input parameter. |
140 | * @param owner The new owner of the packet. Input parameter. |
- | |
141 | * @param addr_len The source and destination addresses maximal length in bytes. Input parameter. |
133 | * @param addr_len The source and destination addresses maximal length in bytes. Input parameter. |
142 | * @param max_prefix The maximal prefix length in bytes. Input parameter. |
134 | * @param max_prefix The maximal prefix length in bytes. Input parameter. |
143 | * @param max_content The maximal content length in bytes. Input parameter. |
135 | * @param max_content The maximal content length in bytes. Input parameter. |
144 | * @param max_suffix The maximal suffix length in bytes. Input parameter. |
136 | * @param max_suffix The maximal suffix length in bytes. Input parameter. |
145 | */ |
137 | */ |
146 | void packet_init( packet_t packet, services_t owner, size_t addr_len, size_t max_prefix, size_t max_content, size_t max_suffix ); |
138 | void packet_init( packet_t packet, size_t addr_len, size_t max_prefix, size_t max_content, size_t max_suffix ); |
147 | 139 | ||
148 | /** Shares the packet memory block. |
140 | /** Shares the packet memory block. |
149 | * @param packet The packet to be shared. |
141 | * @param packet The packet to be shared. |
150 | * @returns EOK on success. |
142 | * @returns EOK on success. |
151 | * @returns EINVAL if the packet is not valid. |
143 | * @returns EINVAL if the packet is not valid. |
Line 161... | Line 153... | ||
161 | * answer_count = 0; |
153 | * answer_count = 0; |
162 | switch( IPC_GET_METHOD( * call )){ |
154 | switch( IPC_GET_METHOD( * call )){ |
163 | case IPC_M_PHONE_HUNGUP: |
155 | case IPC_M_PHONE_HUNGUP: |
164 | return EOK; |
156 | return EOK; |
165 | case NET_PACKET_CREATE_1: |
157 | case NET_PACKET_CREATE_1: |
166 | packet = packet_get( IPC_GET_OWNER( call ), 0, 0, IPC_GET_CONTENT( call ), 0 ); |
158 | packet = packet_get( 0, 0, IPC_GET_CONTENT( call ), 0 ); |
167 | if( ! packet ) return ENOMEM; |
159 | if( ! packet ) return ENOMEM; |
168 | * answer_count = 2; |
160 | * answer_count = 2; |
169 | IPC_SET_ARG1( * answer, packet->packet_id ); |
161 | IPC_SET_ARG1( * answer, packet->packet_id ); |
170 | IPC_SET_ARG2( * answer, packet->length ); |
162 | IPC_SET_ARG2( * answer, packet->length ); |
171 | return EOK; |
163 | return EOK; |
172 | case NET_PACKET_CREATE_5: |
164 | case NET_PACKET_CREATE_4: |
173 | packet = packet_get( IPC_GET_OWNER( call ), IPC_GET_ADDR_LEN( call ), IPC_GET_PREFIX( call ), IPC_GET_CONTENT( call ), IPC_GET_SUFIX( call )); |
165 | packet = packet_get( IPC_GET_ADDR_LEN( call ), IPC_GET_PREFIX( call ), IPC_GET_CONTENT( call ), IPC_GET_SUFIX( call )); |
174 | if( ! packet ) return ENOMEM; |
166 | if( ! packet ) return ENOMEM; |
175 | * answer_count = 2; |
167 | * answer_count = 2; |
176 | IPC_SET_ARG1( * answer, packet->packet_id ); |
168 | IPC_SET_ARG1( * answer, packet->packet_id ); |
177 | IPC_SET_ARG2( * answer, packet->length ); |
169 | IPC_SET_ARG2( * answer, packet->length ); |
178 | return EOK; |
170 | return EOK; |
Line 202... | Line 194... | ||
202 | 194 | ||
203 | for( index = 0; ( index < FREE_QUEUES_COUNT - 1 ) && ( packet->length > ps_globals.sizes[ index ] ); ++ index ); |
195 | for( index = 0; ( index < FREE_QUEUES_COUNT - 1 ) && ( packet->length > ps_globals.sizes[ index ] ); ++ index ); |
204 | ps_globals.free[ index ] = pq_add( ps_globals.free[ index ], packet, packet->length, packet->length ); |
196 | ps_globals.free[ index ] = pq_add( ps_globals.free[ index ], packet, packet->length, packet->length ); |
205 | } |
197 | } |
206 | 198 | ||
207 | packet_t packet_get( services_t owner, size_t addr_len, size_t max_prefix, size_t max_content, size_t max_suffix ){ |
199 | packet_t packet_get( size_t addr_len, size_t max_prefix, size_t max_content, size_t max_suffix ){ |
208 | int index; |
200 | int index; |
209 | packet_t packet; |
201 | packet_t packet; |
210 | size_t length; |
202 | size_t length; |
211 | 203 | ||
212 | length = ALIGN_UP( sizeof( struct packet ) + 2 * addr_len + max_prefix + max_content + max_suffix, PAGE_SIZE ); |
204 | length = ALIGN_UP( sizeof( struct packet ) + 2 * addr_len + max_prefix + max_content + max_suffix, PAGE_SIZE ); |
Line 216... | Line 208... | ||
216 | packet = ps_globals.free[ index ]; |
208 | packet = ps_globals.free[ index ]; |
217 | while( packet_is_valid( packet ) && ( packet->length < length )){ |
209 | while( packet_is_valid( packet ) && ( packet->length < length )){ |
218 | packet = pm_find( packet->next ); |
210 | packet = pm_find( packet->next ); |
219 | } |
211 | } |
220 | if( packet ){ |
212 | if( packet ){ |
221 | packet_init( packet, owner, addr_len, max_prefix, max_content, max_suffix ); |
213 | packet_init( packet, addr_len, max_prefix, max_content, max_suffix ); |
222 | futex_up( & ps_globals.lock ); |
214 | futex_up( & ps_globals.lock ); |
223 | return packet; |
215 | return packet; |
224 | } |
216 | } |
225 | } |
217 | } |
226 | } |
218 | } |
227 | packet = packet_create( length, owner, addr_len, max_prefix, max_content, max_suffix ); |
219 | packet = packet_create( length, addr_len, max_prefix, max_content, max_suffix ); |
228 | futex_up( & ps_globals.lock ); |
220 | futex_up( & ps_globals.lock ); |
229 | return packet; |
221 | return packet; |
230 | } |
222 | } |
231 | 223 | ||
232 | packet_t packet_create( size_t length, services_t owner, size_t addr_len, size_t max_prefix, size_t max_content, size_t max_suffix ){ |
224 | packet_t packet_create( size_t length, size_t addr_len, size_t max_prefix, size_t max_content, size_t max_suffix ){ |
233 | ERROR_DECLARE; |
225 | ERROR_DECLARE; |
234 | 226 | ||
235 | packet_t packet; |
227 | packet_t packet; |
236 | 228 | ||
237 | // already locked |
229 | // already locked |
238 | packet = ( packet_t ) mmap( NULL, length, PROTO_READ | PROTO_WRITE, MAP_SHARED | MAP_ANONYMOUS, 0, 0 ); |
230 | packet = ( packet_t ) mmap( NULL, length, PROTO_READ | PROTO_WRITE, MAP_SHARED | MAP_ANONYMOUS, 0, 0 ); |
239 | if( packet == MAP_FAILED ) return NULL; |
231 | if( packet == MAP_FAILED ) return NULL; |
240 | ++ ps_globals.count; |
232 | ++ ps_globals.count; |
241 | packet->packet_id = ps_globals.count; |
233 | packet->packet_id = ps_globals.count; |
242 | packet->mode = PM_ONE_WAY; |
- | |
243 | packet->length = length; |
234 | packet->length = length; |
244 | packet_init( packet, owner, addr_len, max_prefix, max_content, max_suffix ); |
235 | packet_init( packet, addr_len, max_prefix, max_content, max_suffix ); |
245 | packet->magic_value = PACKET_MAGIC_VALUE; |
236 | packet->magic_value = PACKET_MAGIC_VALUE; |
246 | if( ERROR_OCCURRED( pm_add( packet ))){ |
237 | if( ERROR_OCCURRED( pm_add( packet ))){ |
247 | munmap( packet, packet->length ); |
238 | munmap( packet, packet->length ); |
248 | return NULL; |
239 | return NULL; |
249 | } |
240 | } |
250 | packet_release( packet ); |
241 | packet_release( packet ); |
251 | return packet; |
242 | return packet; |
252 | } |
243 | } |
253 | 244 | ||
254 | void packet_init( packet_t packet, services_t owner, size_t addr_len, size_t max_prefix, size_t max_content, size_t max_suffix ){ |
245 | void packet_init( packet_t packet, size_t addr_len, size_t max_prefix, size_t max_content, size_t max_suffix ){ |
255 | packet->owner = owner; |
- | |
256 | packet->order = 0; |
246 | packet->order = 0; |
257 | packet->metric = 0; |
247 | packet->metric = 0; |
258 | packet->previous = 0; |
248 | packet->previous = 0; |
259 | packet->next = 0; |
249 | packet->next = 0; |
260 | packet->addr_len = addr_len; |
250 | packet->addr_len = addr_len; |