[96b39164] | 1 | /* |
---|
| 2 | * $Id$ |
---|
| 3 | */ |
---|
| 4 | |
---|
[0e08ff00] | 5 | #define RTEMS_FAST_MUTEX |
---|
| 6 | |
---|
| 7 | #ifdef RTEMS_FAST_MUTEX |
---|
| 8 | #define __RTEMS_VIOLATE_KERNEL_VISIBILITY__ 1 |
---|
| 9 | #endif |
---|
| 10 | |
---|
[39e6e65a] | 11 | #include <string.h> |
---|
| 12 | #include <stdarg.h> |
---|
| 13 | #include <stdio.h> |
---|
| 14 | #include <errno.h> |
---|
| 15 | |
---|
| 16 | #include <rtems.h> |
---|
| 17 | #include <rtems/libio.h> |
---|
| 18 | #include <rtems/error.h> |
---|
| 19 | #include <rtems/rtems_bsdnet.h> |
---|
| 20 | #include <sys/types.h> |
---|
| 21 | #include <sys/param.h> |
---|
| 22 | #include <sys/domain.h> |
---|
| 23 | #include <sys/mbuf.h> |
---|
| 24 | #include <sys/socketvar.h> |
---|
| 25 | #include <sys/socket.h> |
---|
| 26 | #include <sys/sockio.h> |
---|
| 27 | #include <sys/callout.h> |
---|
| 28 | #include <sys/proc.h> |
---|
[33679ec4] | 29 | #include <sys/ioctl.h> |
---|
[39e6e65a] | 30 | #include <net/if.h> |
---|
| 31 | #include <net/route.h> |
---|
| 32 | #include <netinet/in.h> |
---|
| 33 | #include <vm/vm.h> |
---|
| 34 | #include <arpa/inet.h> |
---|
| 35 | |
---|
| 36 | #include <net/netisr.h> |
---|
| 37 | #include <net/route.h> |
---|
| 38 | |
---|
| 39 | /* |
---|
| 40 | * Memory allocation |
---|
| 41 | */ |
---|
| 42 | static int nmbuf = (64 * 1024) / MSIZE; |
---|
| 43 | int nmbclusters = (128 * 1024) / MCLBYTES; |
---|
| 44 | |
---|
| 45 | /* |
---|
| 46 | * Socket buffering parameters |
---|
| 47 | */ |
---|
| 48 | unsigned long sb_efficiency = 8; |
---|
| 49 | |
---|
| 50 | /* |
---|
| 51 | * Network task synchronization |
---|
| 52 | */ |
---|
| 53 | static rtems_id networkSemaphore; |
---|
[0e08ff00] | 54 | #ifdef RTEMS_FAST_MUTEX |
---|
| 55 | Semaphore_Control *the_networkSemaphore; |
---|
| 56 | #endif |
---|
[39e6e65a] | 57 | static rtems_id networkDaemonTid; |
---|
| 58 | static rtems_unsigned32 networkDaemonPriority; |
---|
| 59 | static void networkDaemon (void *task_argument); |
---|
| 60 | |
---|
| 61 | /* |
---|
| 62 | * Network timing |
---|
| 63 | */ |
---|
| 64 | int rtems_bsdnet_ticks_per_second; |
---|
| 65 | int rtems_bsdnet_microseconds_per_tick; |
---|
| 66 | |
---|
| 67 | /* |
---|
| 68 | * Callout processing |
---|
| 69 | */ |
---|
| 70 | static rtems_interval ticksWhenCalloutsLastChecked; |
---|
| 71 | static struct callout *callfree, calltodo; |
---|
| 72 | |
---|
| 73 | /* |
---|
| 74 | * FreeBSD variables |
---|
| 75 | */ |
---|
| 76 | int nfs_diskless_valid; |
---|
| 77 | |
---|
| 78 | /* |
---|
| 79 | * BOOTP values |
---|
| 80 | */ |
---|
| 81 | struct in_addr rtems_bsdnet_log_host_address; |
---|
| 82 | struct in_addr rtems_bsdnet_bootp_server_address; |
---|
| 83 | char *rtems_bsdnet_bootp_boot_file_name; |
---|
[847375f] | 84 | char *rtems_bsdnet_bootp_server_name; |
---|
[39e6e65a] | 85 | char *rtems_bsdnet_domain_name; |
---|
| 86 | struct in_addr rtems_bsdnet_nameserver[sizeof rtems_bsdnet_config.name_server / |
---|
| 87 | sizeof rtems_bsdnet_config.name_server[0]]; |
---|
| 88 | int rtems_bsdnet_nameserver_count; |
---|
[a0af97d] | 89 | struct in_addr rtems_bsdnet_ntpserver[sizeof rtems_bsdnet_config.ntp_server / |
---|
| 90 | sizeof rtems_bsdnet_config.ntp_server[0]]; |
---|
| 91 | int rtems_bsdnet_ntpserver_count; |
---|
| 92 | long rtems_bsdnet_timeoffset; |
---|
[39e6e65a] | 93 | |
---|
| 94 | /* |
---|
| 95 | * Perform FreeBSD memory allocation. |
---|
| 96 | * FIXME: This should be modified to keep memory allocation statistics. |
---|
| 97 | */ |
---|
| 98 | #undef malloc |
---|
| 99 | #undef free |
---|
| 100 | extern void *malloc (size_t); |
---|
| 101 | extern void free (void *); |
---|
| 102 | void * |
---|
| 103 | rtems_bsdnet_malloc (unsigned long size, int type, int flags) |
---|
| 104 | { |
---|
| 105 | void *p; |
---|
[f74abcf7] | 106 | int try = 0; |
---|
[39e6e65a] | 107 | |
---|
| 108 | for (;;) { |
---|
| 109 | p = malloc (size); |
---|
[f74abcf7] | 110 | if (p || (flags & M_NOWAIT)) |
---|
[39e6e65a] | 111 | return p; |
---|
[f74abcf7] | 112 | rtems_bsdnet_semaphore_release (); |
---|
| 113 | if (++try >= 30) { |
---|
| 114 | printf ("rtems_bsdnet_malloc still waiting.\n"); |
---|
| 115 | try = 0; |
---|
| 116 | } |
---|
[845f170a] | 117 | while (rtems_bsdnet_seconds_since_boot() == 0) |
---|
| 118 | rtems_task_wake_after(1); |
---|
[f74abcf7] | 119 | rtems_bsdnet_semaphore_obtain (); |
---|
[39e6e65a] | 120 | } |
---|
| 121 | } |
---|
| 122 | |
---|
| 123 | /* |
---|
| 124 | * Free FreeBSD memory |
---|
| 125 | * FIXME: This should be modified to keep memory allocation statistics. |
---|
| 126 | */ |
---|
| 127 | void |
---|
| 128 | rtems_bsdnet_free (void *addr, int type) |
---|
| 129 | { |
---|
| 130 | free (addr); |
---|
| 131 | } |
---|
| 132 | |
---|
| 133 | /* |
---|
| 134 | * Do the initializations required by the BSD code |
---|
| 135 | */ |
---|
[4a9b897] | 136 | static int |
---|
| 137 | bsd_init (void) |
---|
[39e6e65a] | 138 | { |
---|
[11cdbeb] | 139 | int i; |
---|
| 140 | char *p; |
---|
| 141 | |
---|
[39e6e65a] | 142 | /* |
---|
[11cdbeb] | 143 | * Set up mbuf cluster data strutures |
---|
[39e6e65a] | 144 | */ |
---|
[11cdbeb] | 145 | p = malloc ((nmbclusters*MCLBYTES)+MCLBYTES-1); |
---|
[4a9b897] | 146 | if (p == NULL) { |
---|
| 147 | printf ("Can't get network cluster memory.\n"); |
---|
| 148 | return -1; |
---|
| 149 | } |
---|
[0da0dea] | 150 | p = (char *)(((unsigned long)p + (MCLBYTES-1)) & ~(MCLBYTES-1)); |
---|
[11cdbeb] | 151 | mbutl = (struct mbuf *)p; |
---|
| 152 | for (i = 0; i < nmbclusters; i++) { |
---|
| 153 | ((union mcluster *)p)->mcl_next = mclfree; |
---|
| 154 | mclfree = (union mcluster *)p; |
---|
| 155 | p += MCLBYTES; |
---|
| 156 | mbstat.m_clfree++; |
---|
| 157 | } |
---|
| 158 | mbstat.m_clusters = nmbclusters; |
---|
[39e6e65a] | 159 | mclrefcnt = malloc (nmbclusters); |
---|
[4a9b897] | 160 | if (mclrefcnt == NULL) { |
---|
| 161 | printf ("Can't get mbuf cluster reference counts memory.\n"); |
---|
| 162 | return -1; |
---|
| 163 | } |
---|
[39e6e65a] | 164 | memset (mclrefcnt, '\0', nmbclusters); |
---|
| 165 | |
---|
[11cdbeb] | 166 | /* |
---|
| 167 | * Set up mbuf data structures |
---|
| 168 | */ |
---|
| 169 | |
---|
[403d7b18] | 170 | p = malloc(nmbuf * MSIZE + MSIZE - 1); |
---|
[f74abcf7] | 171 | p = (char *)(((unsigned int)p + MSIZE - 1) & ~(MSIZE - 1)); |
---|
[4a9b897] | 172 | if (p == NULL) { |
---|
| 173 | printf ("Can't get network memory.\n"); |
---|
| 174 | return -1; |
---|
| 175 | } |
---|
[11cdbeb] | 176 | for (i = 0; i < nmbuf; i++) { |
---|
| 177 | ((struct mbuf *)p)->m_next = mmbfree; |
---|
| 178 | mmbfree = (struct mbuf *)p; |
---|
| 179 | p += MSIZE; |
---|
| 180 | } |
---|
| 181 | mbstat.m_mbufs = nmbuf; |
---|
| 182 | mbstat.m_mtypes[MT_FREE] = nmbuf; |
---|
[39e6e65a] | 183 | |
---|
| 184 | /* |
---|
| 185 | * Set up domains |
---|
| 186 | */ |
---|
| 187 | { |
---|
| 188 | extern struct domain routedomain; |
---|
| 189 | extern struct domain inetdomain; |
---|
| 190 | |
---|
| 191 | routedomain.dom_next = domains; |
---|
| 192 | domains = &routedomain; |
---|
| 193 | inetdomain.dom_next = domains; |
---|
| 194 | domains = &inetdomain; |
---|
| 195 | domaininit (NULL); |
---|
| 196 | } |
---|
| 197 | |
---|
| 198 | /* |
---|
| 199 | * Set up interfaces |
---|
| 200 | */ |
---|
| 201 | ifinit (NULL); |
---|
[4a9b897] | 202 | return 0; |
---|
[39e6e65a] | 203 | } |
---|
| 204 | |
---|
| 205 | /* |
---|
| 206 | * Initialize and start network operations |
---|
| 207 | */ |
---|
[4a9b897] | 208 | static int |
---|
[39e6e65a] | 209 | rtems_bsdnet_initialize (void) |
---|
| 210 | { |
---|
| 211 | rtems_status_code sc; |
---|
| 212 | |
---|
| 213 | /* |
---|
| 214 | * Set the priority of all network tasks |
---|
| 215 | */ |
---|
| 216 | if (rtems_bsdnet_config.network_task_priority == 0) |
---|
| 217 | networkDaemonPriority = 100; |
---|
| 218 | else |
---|
| 219 | networkDaemonPriority = rtems_bsdnet_config.network_task_priority; |
---|
| 220 | |
---|
| 221 | /* |
---|
| 222 | * Set the memory allocation limits |
---|
| 223 | */ |
---|
| 224 | if (rtems_bsdnet_config.mbuf_bytecount) |
---|
| 225 | nmbuf = rtems_bsdnet_config.mbuf_bytecount / MSIZE; |
---|
| 226 | if (rtems_bsdnet_config.mbuf_cluster_bytecount) |
---|
| 227 | nmbclusters = rtems_bsdnet_config.mbuf_cluster_bytecount / MCLBYTES; |
---|
| 228 | |
---|
| 229 | /* |
---|
| 230 | * Create the task-synchronization semaphore |
---|
| 231 | */ |
---|
| 232 | sc = rtems_semaphore_create (rtems_build_name('B', 'S', 'D', 'n'), |
---|
| 233 | 0, |
---|
[0e08ff00] | 234 | RTEMS_PRIORITY | |
---|
[39e6e65a] | 235 | RTEMS_BINARY_SEMAPHORE | |
---|
[0e08ff00] | 236 | RTEMS_INHERIT_PRIORITY | |
---|
[39e6e65a] | 237 | RTEMS_NO_PRIORITY_CEILING | |
---|
| 238 | RTEMS_LOCAL, |
---|
| 239 | 0, |
---|
| 240 | &networkSemaphore); |
---|
[4a9b897] | 241 | if (sc != RTEMS_SUCCESSFUL) { |
---|
| 242 | printf ("Can't create network seamphore: `%s'\n", rtems_status_text (sc)); |
---|
| 243 | return -1; |
---|
| 244 | } |
---|
[0e08ff00] | 245 | #ifdef RTEMS_FAST_MUTEX |
---|
| 246 | { |
---|
| 247 | Objects_Locations location; |
---|
| 248 | the_networkSemaphore = _Semaphore_Get( networkSemaphore, &location ); |
---|
| 249 | _Thread_Enable_dispatch(); |
---|
| 250 | } |
---|
| 251 | #endif |
---|
[39e6e65a] | 252 | |
---|
| 253 | /* |
---|
| 254 | * Compute clock tick conversion factors |
---|
| 255 | */ |
---|
| 256 | rtems_clock_get (RTEMS_CLOCK_GET_TICKS_PER_SECOND, &rtems_bsdnet_ticks_per_second); |
---|
| 257 | if (rtems_bsdnet_ticks_per_second <= 0) |
---|
| 258 | rtems_bsdnet_ticks_per_second = 1; |
---|
| 259 | rtems_bsdnet_microseconds_per_tick = 1000000 / rtems_bsdnet_ticks_per_second; |
---|
| 260 | |
---|
| 261 | /* |
---|
| 262 | * Ensure that `seconds' is greater than 0 |
---|
| 263 | */ |
---|
| 264 | rtems_task_wake_after (rtems_bsdnet_ticks_per_second); |
---|
| 265 | |
---|
| 266 | /* |
---|
| 267 | * Set up BSD-style sockets |
---|
| 268 | */ |
---|
[4a9b897] | 269 | if (bsd_init () < 0) |
---|
| 270 | return -1; |
---|
[39e6e65a] | 271 | |
---|
| 272 | /* |
---|
| 273 | * Start network daemon |
---|
| 274 | */ |
---|
| 275 | networkDaemonTid = rtems_bsdnet_newproc ("ntwk", 4096, networkDaemon, NULL); |
---|
| 276 | |
---|
| 277 | /* |
---|
| 278 | * Let other network tasks begin |
---|
| 279 | */ |
---|
| 280 | rtems_bsdnet_semaphore_release (); |
---|
[4a9b897] | 281 | return 0; |
---|
[39e6e65a] | 282 | } |
---|
| 283 | |
---|
| 284 | /* |
---|
| 285 | * Obtain network mutex |
---|
| 286 | */ |
---|
| 287 | void |
---|
| 288 | rtems_bsdnet_semaphore_obtain (void) |
---|
| 289 | { |
---|
[0e08ff00] | 290 | #ifdef RTEMS_FAST_MUTEX |
---|
| 291 | ISR_Level level; |
---|
| 292 | _ISR_Disable (level); |
---|
| 293 | _CORE_mutex_Seize ( |
---|
| 294 | &the_networkSemaphore->Core_control.mutex, |
---|
| 295 | networkSemaphore, |
---|
| 296 | 1, /* wait */ |
---|
| 297 | 0, /* forever */ |
---|
| 298 | level |
---|
| 299 | ); |
---|
| 300 | if (_Thread_Executing->Wait.return_code) |
---|
| 301 | rtems_panic ("Can't obtain network semaphore\n"); |
---|
| 302 | #else |
---|
[39e6e65a] | 303 | rtems_status_code sc; |
---|
| 304 | |
---|
| 305 | sc = rtems_semaphore_obtain (networkSemaphore, RTEMS_WAIT, RTEMS_NO_TIMEOUT); |
---|
| 306 | if (sc != RTEMS_SUCCESSFUL) |
---|
| 307 | rtems_panic ("Can't obtain network semaphore: `%s'\n", rtems_status_text (sc)); |
---|
[0e08ff00] | 308 | #endif |
---|
[39e6e65a] | 309 | } |
---|
| 310 | |
---|
| 311 | /* |
---|
| 312 | * Release network mutex |
---|
| 313 | */ |
---|
| 314 | void |
---|
| 315 | rtems_bsdnet_semaphore_release (void) |
---|
| 316 | { |
---|
[0e08ff00] | 317 | #ifdef RTEMS_FAST_MUTEX |
---|
| 318 | int i; |
---|
| 319 | |
---|
| 320 | _Thread_Disable_dispatch(); |
---|
| 321 | i = _CORE_mutex_Surrender ( |
---|
| 322 | &the_networkSemaphore->Core_control.mutex, |
---|
| 323 | networkSemaphore, |
---|
| 324 | NULL |
---|
| 325 | ); |
---|
| 326 | _Thread_Enable_dispatch(); |
---|
| 327 | if (i) |
---|
| 328 | rtems_panic ("Can't release network semaphore\n"); |
---|
| 329 | #else |
---|
[39e6e65a] | 330 | rtems_status_code sc; |
---|
| 331 | |
---|
| 332 | sc = rtems_semaphore_release (networkSemaphore); |
---|
| 333 | if (sc != RTEMS_SUCCESSFUL) |
---|
| 334 | rtems_panic ("Can't release network semaphore: `%s'\n", rtems_status_text (sc)); |
---|
[0e08ff00] | 335 | #endif |
---|
| 336 | } |
---|
[39e6e65a] | 337 | |
---|
| 338 | /* |
---|
| 339 | * Wait for something to happen to a socket buffer |
---|
| 340 | */ |
---|
| 341 | int |
---|
| 342 | sbwait(sb) |
---|
| 343 | struct sockbuf *sb; |
---|
| 344 | { |
---|
| 345 | rtems_event_set events; |
---|
| 346 | rtems_id tid; |
---|
| 347 | rtems_status_code sc; |
---|
| 348 | |
---|
| 349 | /* |
---|
| 350 | * Soak up any pending events. |
---|
| 351 | * The sleep/wakeup synchronization in the FreeBSD |
---|
| 352 | * kernel has no memory. |
---|
| 353 | */ |
---|
| 354 | rtems_event_receive (SBWAIT_EVENT, RTEMS_EVENT_ANY | RTEMS_NO_WAIT, RTEMS_NO_TIMEOUT, &events); |
---|
| 355 | |
---|
| 356 | /* |
---|
| 357 | * Set this task as the target of the wakeup operation. |
---|
| 358 | */ |
---|
| 359 | rtems_task_ident (RTEMS_SELF, 0, &tid); |
---|
| 360 | sb->sb_sel.si_pid = tid; |
---|
| 361 | |
---|
[ecec2ba] | 362 | /* |
---|
| 363 | * Show that socket is waiting |
---|
| 364 | */ |
---|
| 365 | sb->sb_flags |= SB_WAIT; |
---|
| 366 | |
---|
[39e6e65a] | 367 | /* |
---|
| 368 | * Release the network semaphore. |
---|
| 369 | */ |
---|
| 370 | rtems_bsdnet_semaphore_release (); |
---|
| 371 | |
---|
| 372 | /* |
---|
| 373 | * Wait for the wakeup event. |
---|
| 374 | */ |
---|
| 375 | sc = rtems_event_receive (SBWAIT_EVENT, RTEMS_EVENT_ANY | RTEMS_WAIT, sb->sb_timeo, &events); |
---|
| 376 | |
---|
| 377 | /* |
---|
| 378 | * Reobtain the network semaphore. |
---|
| 379 | */ |
---|
| 380 | rtems_bsdnet_semaphore_obtain (); |
---|
| 381 | |
---|
| 382 | /* |
---|
| 383 | * Return the status of the wait. |
---|
| 384 | */ |
---|
| 385 | switch (sc) { |
---|
| 386 | case RTEMS_SUCCESSFUL: return 0; |
---|
| 387 | case RTEMS_TIMEOUT: return EWOULDBLOCK; |
---|
| 388 | default: return ENXIO; |
---|
| 389 | } |
---|
| 390 | } |
---|
| 391 | |
---|
| 392 | |
---|
| 393 | /* |
---|
| 394 | * Wake up the task waiting on a socket buffer. |
---|
| 395 | */ |
---|
| 396 | void |
---|
| 397 | sowakeup(so, sb) |
---|
| 398 | register struct socket *so; |
---|
| 399 | register struct sockbuf *sb; |
---|
| 400 | { |
---|
[ecec2ba] | 401 | if (sb->sb_flags & SB_WAIT) { |
---|
| 402 | sb->sb_flags &= ~SB_WAIT; |
---|
| 403 | rtems_event_send (sb->sb_sel.si_pid, SBWAIT_EVENT); |
---|
[39e6e65a] | 404 | } |
---|
[a6f3cff] | 405 | if (sb->sb_wakeup) { |
---|
| 406 | (*sb->sb_wakeup) (so, sb->sb_wakeuparg); |
---|
| 407 | } |
---|
[39e6e65a] | 408 | } |
---|
| 409 | |
---|
| 410 | /* |
---|
| 411 | * For now, a socket can be used by only one task at a time. |
---|
| 412 | */ |
---|
| 413 | int |
---|
| 414 | sb_lock(sb) |
---|
| 415 | register struct sockbuf *sb; |
---|
| 416 | { |
---|
| 417 | rtems_panic ("Socket buffer is already in use."); |
---|
| 418 | return 0; |
---|
| 419 | } |
---|
| 420 | void |
---|
| 421 | wakeup (void *p) |
---|
| 422 | { |
---|
| 423 | rtems_panic ("Wakeup called"); |
---|
| 424 | } |
---|
| 425 | |
---|
| 426 | /* |
---|
| 427 | * Wait for a connection/disconnection event. |
---|
| 428 | */ |
---|
[91b1c8e6] | 429 | int |
---|
[39e6e65a] | 430 | soconnsleep (struct socket *so) |
---|
| 431 | { |
---|
| 432 | rtems_event_set events; |
---|
| 433 | rtems_id tid; |
---|
[91b1c8e6] | 434 | rtems_status_code sc; |
---|
[39e6e65a] | 435 | |
---|
| 436 | /* |
---|
| 437 | * Soak up any pending events. |
---|
| 438 | * The sleep/wakeup synchronization in the FreeBSD |
---|
| 439 | * kernel has no memory. |
---|
| 440 | */ |
---|
| 441 | rtems_event_receive (SOSLEEP_EVENT, RTEMS_EVENT_ANY | RTEMS_NO_WAIT, RTEMS_NO_TIMEOUT, &events); |
---|
| 442 | |
---|
| 443 | /* |
---|
| 444 | * Set this task as the target of the wakeup operation. |
---|
| 445 | */ |
---|
| 446 | if (so->so_pgid) |
---|
| 447 | rtems_panic ("Another task is already sleeping on that socket"); |
---|
| 448 | rtems_task_ident (RTEMS_SELF, 0, &tid); |
---|
| 449 | so->so_pgid = tid; |
---|
| 450 | |
---|
| 451 | /* |
---|
| 452 | * Wait for the wakeup event. |
---|
| 453 | */ |
---|
[91b1c8e6] | 454 | sc = rtems_bsdnet_event_receive (SOSLEEP_EVENT, RTEMS_EVENT_ANY | RTEMS_WAIT, so->so_rcv.sb_timeo, &events); |
---|
[39e6e65a] | 455 | |
---|
| 456 | /* |
---|
| 457 | * Relinquish ownership of the socket. |
---|
| 458 | */ |
---|
| 459 | so->so_pgid = 0; |
---|
[91b1c8e6] | 460 | |
---|
| 461 | switch (sc) { |
---|
| 462 | case RTEMS_SUCCESSFUL: return 0; |
---|
| 463 | case RTEMS_TIMEOUT: return EWOULDBLOCK; |
---|
| 464 | default: return ENXIO; |
---|
| 465 | } |
---|
[39e6e65a] | 466 | } |
---|
| 467 | |
---|
| 468 | /* |
---|
| 469 | * Wake up a task waiting for a connection/disconnection to complete. |
---|
| 470 | */ |
---|
| 471 | void |
---|
| 472 | soconnwakeup (struct socket *so) |
---|
| 473 | { |
---|
| 474 | if (so->so_pgid) |
---|
| 475 | rtems_event_send (so->so_pgid, SOSLEEP_EVENT); |
---|
| 476 | } |
---|
| 477 | |
---|
| 478 | /* |
---|
| 479 | * Send an event to the network daemon. |
---|
| 480 | * This corresponds to sending a software interrupt in the BSD kernel. |
---|
| 481 | */ |
---|
| 482 | void |
---|
| 483 | rtems_bsdnet_schednetisr (int n) |
---|
| 484 | { |
---|
| 485 | rtems_event_send (networkDaemonTid, 1 << n); |
---|
| 486 | } |
---|
| 487 | |
---|
| 488 | /* |
---|
| 489 | * The network daemon |
---|
| 490 | * This provides a context to run BSD software interrupts |
---|
| 491 | */ |
---|
| 492 | static void |
---|
| 493 | networkDaemon (void *task_argument) |
---|
| 494 | { |
---|
| 495 | rtems_event_set events; |
---|
| 496 | rtems_interval now; |
---|
| 497 | int ticksPassed; |
---|
| 498 | unsigned32 timeout; |
---|
| 499 | struct callout *c; |
---|
| 500 | |
---|
| 501 | for (;;) { |
---|
| 502 | c = calltodo.c_next; |
---|
| 503 | if (c) |
---|
| 504 | timeout = c->c_time; |
---|
| 505 | else |
---|
| 506 | timeout = RTEMS_NO_TIMEOUT; |
---|
| 507 | rtems_bsdnet_event_receive (NETISR_EVENTS, |
---|
| 508 | RTEMS_EVENT_ANY | RTEMS_WAIT, |
---|
| 509 | timeout, |
---|
| 510 | &events); |
---|
| 511 | if (events & NETISR_IP_EVENT) |
---|
| 512 | ipintr (); |
---|
| 513 | if (events & NETISR_ARP_EVENT) |
---|
| 514 | arpintr (); |
---|
| 515 | rtems_clock_get (RTEMS_CLOCK_GET_TICKS_SINCE_BOOT, &now); |
---|
| 516 | ticksPassed = now - ticksWhenCalloutsLastChecked; |
---|
| 517 | if (ticksPassed != 0) { |
---|
| 518 | ticksWhenCalloutsLastChecked = now; |
---|
| 519 | |
---|
| 520 | c = calltodo.c_next; |
---|
| 521 | if (c) { |
---|
| 522 | c->c_time -= ticksPassed; |
---|
| 523 | while ((c = calltodo.c_next) != NULL && c->c_time <= 0) { |
---|
| 524 | void *arg; |
---|
| 525 | void (*func) (void *); |
---|
| 526 | |
---|
| 527 | func = c->c_func; |
---|
| 528 | arg = c->c_arg; |
---|
| 529 | calltodo.c_next = c->c_next; |
---|
| 530 | c->c_next = callfree; |
---|
| 531 | callfree = c; |
---|
| 532 | (*func)(arg); |
---|
| 533 | } |
---|
| 534 | } |
---|
| 535 | } |
---|
| 536 | } |
---|
| 537 | } |
---|
| 538 | |
---|
| 539 | /* |
---|
| 540 | * Structure passed to task-start stub |
---|
| 541 | */ |
---|
| 542 | struct newtask { |
---|
| 543 | void (*entry)(void *); |
---|
| 544 | void *arg; |
---|
| 545 | }; |
---|
| 546 | |
---|
| 547 | /* |
---|
| 548 | * Task-start stub |
---|
| 549 | */ |
---|
| 550 | static void |
---|
| 551 | taskEntry (rtems_task_argument arg) |
---|
| 552 | { |
---|
| 553 | struct newtask t; |
---|
| 554 | |
---|
| 555 | /* |
---|
| 556 | * Pick up task information and free |
---|
| 557 | * the memory allocated to pass the |
---|
| 558 | * information to this task. |
---|
| 559 | */ |
---|
| 560 | t = *(struct newtask *)arg; |
---|
| 561 | free ((struct newtask *)arg); |
---|
| 562 | |
---|
| 563 | /* |
---|
| 564 | * Enter the competition for the network semaphore |
---|
| 565 | */ |
---|
| 566 | rtems_bsdnet_semaphore_obtain (); |
---|
| 567 | |
---|
| 568 | /* |
---|
| 569 | * Enter the task |
---|
| 570 | */ |
---|
| 571 | (*t.entry)(t.arg); |
---|
| 572 | rtems_panic ("Network task returned!\n"); |
---|
| 573 | } |
---|
| 574 | |
---|
| 575 | /* |
---|
| 576 | * Start a network task |
---|
| 577 | */ |
---|
| 578 | rtems_id |
---|
| 579 | rtems_bsdnet_newproc (char *name, int stacksize, void(*entry)(void *), void *arg) |
---|
| 580 | { |
---|
| 581 | struct newtask *t; |
---|
| 582 | char nm[4]; |
---|
| 583 | rtems_id tid; |
---|
| 584 | rtems_status_code sc; |
---|
| 585 | |
---|
| 586 | strncpy (nm, name, 4); |
---|
| 587 | sc = rtems_task_create (rtems_build_name(nm[0], nm[1], nm[2], nm[3]), |
---|
| 588 | networkDaemonPriority, |
---|
| 589 | stacksize, |
---|
| 590 | RTEMS_PREEMPT|RTEMS_NO_TIMESLICE|RTEMS_NO_ASR|RTEMS_INTERRUPT_LEVEL(0), |
---|
| 591 | RTEMS_NO_FLOATING_POINT|RTEMS_LOCAL, |
---|
| 592 | &tid); |
---|
| 593 | if (sc != RTEMS_SUCCESSFUL) |
---|
| 594 | rtems_panic ("Can't create network daemon `%s': `%s'\n", name, rtems_status_text (sc)); |
---|
| 595 | |
---|
| 596 | /* |
---|
| 597 | * Set up task arguments |
---|
| 598 | */ |
---|
| 599 | t = malloc (sizeof *t); |
---|
| 600 | t->entry = entry; |
---|
| 601 | t->arg = arg; |
---|
| 602 | |
---|
| 603 | /* |
---|
| 604 | * Start the task |
---|
| 605 | */ |
---|
| 606 | sc = rtems_task_start (tid, taskEntry, (rtems_task_argument)t); |
---|
| 607 | if (sc != RTEMS_SUCCESSFUL) |
---|
| 608 | rtems_panic ("Can't start network daemon `%s': `%s'\n", name, rtems_status_text (sc)); |
---|
| 609 | |
---|
| 610 | /* |
---|
| 611 | * Let our caller know the i.d. of the new task |
---|
| 612 | */ |
---|
| 613 | return tid; |
---|
| 614 | } |
---|
| 615 | |
---|
| 616 | rtems_status_code rtems_bsdnet_event_receive ( |
---|
| 617 | rtems_event_set event_in, |
---|
| 618 | rtems_option option_set, |
---|
| 619 | rtems_interval ticks, |
---|
| 620 | rtems_event_set *event_out) |
---|
| 621 | { |
---|
| 622 | rtems_status_code sc; |
---|
| 623 | |
---|
| 624 | rtems_bsdnet_semaphore_release (); |
---|
| 625 | sc = rtems_event_receive (event_in, option_set, ticks, event_out); |
---|
| 626 | rtems_bsdnet_semaphore_obtain (); |
---|
| 627 | return sc; |
---|
| 628 | } |
---|
| 629 | |
---|
| 630 | /* |
---|
| 631 | * Return time since startup |
---|
| 632 | */ |
---|
| 633 | void |
---|
| 634 | microtime (struct timeval *t) |
---|
| 635 | { |
---|
| 636 | rtems_interval now; |
---|
| 637 | |
---|
| 638 | rtems_clock_get (RTEMS_CLOCK_GET_TICKS_SINCE_BOOT, &now); |
---|
| 639 | t->tv_sec = now / rtems_bsdnet_ticks_per_second; |
---|
| 640 | t->tv_usec = (now % rtems_bsdnet_ticks_per_second) * rtems_bsdnet_microseconds_per_tick; |
---|
| 641 | } |
---|
| 642 | |
---|
| 643 | unsigned long |
---|
| 644 | rtems_bsdnet_seconds_since_boot (void) |
---|
| 645 | { |
---|
| 646 | rtems_interval now; |
---|
| 647 | |
---|
| 648 | rtems_clock_get (RTEMS_CLOCK_GET_TICKS_SINCE_BOOT, &now); |
---|
| 649 | return now / rtems_bsdnet_ticks_per_second; |
---|
| 650 | } |
---|
| 651 | |
---|
| 652 | /* |
---|
| 653 | * Fake random number generator |
---|
| 654 | */ |
---|
| 655 | unsigned long |
---|
| 656 | rtems_bsdnet_random (void) |
---|
| 657 | { |
---|
| 658 | rtems_interval now; |
---|
| 659 | |
---|
| 660 | rtems_clock_get (RTEMS_CLOCK_GET_TICKS_SINCE_BOOT, &now); |
---|
| 661 | return (now * 99991); |
---|
| 662 | } |
---|
| 663 | |
---|
| 664 | /* |
---|
| 665 | * Callout list processing |
---|
| 666 | */ |
---|
| 667 | void |
---|
| 668 | timeout(void (*ftn)(void *), void *arg, int ticks) |
---|
| 669 | { |
---|
| 670 | register struct callout *new, *p, *t; |
---|
| 671 | |
---|
| 672 | if (ticks <= 0) |
---|
| 673 | ticks = 1; |
---|
| 674 | |
---|
| 675 | /* Fill in the next free callout structure. */ |
---|
| 676 | if (callfree == NULL) { |
---|
| 677 | callfree = malloc (sizeof *callfree); |
---|
| 678 | if (callfree == NULL) |
---|
| 679 | rtems_panic ("No memory for timeout table entry"); |
---|
| 680 | callfree->c_next = NULL; |
---|
| 681 | } |
---|
| 682 | |
---|
| 683 | new = callfree; |
---|
| 684 | callfree = new->c_next; |
---|
| 685 | new->c_arg = arg; |
---|
| 686 | new->c_func = ftn; |
---|
| 687 | |
---|
| 688 | /* |
---|
| 689 | * The time for each event is stored as a difference from the time |
---|
| 690 | * of the previous event on the queue. Walk the queue, correcting |
---|
| 691 | * the ticks argument for queue entries passed. Correct the ticks |
---|
| 692 | * value for the queue entry immediately after the insertion point |
---|
| 693 | * as well. Watch out for negative c_time values; these represent |
---|
| 694 | * overdue events. |
---|
| 695 | */ |
---|
| 696 | for (p = &calltodo; |
---|
| 697 | (t = p->c_next) != NULL && ticks > t->c_time; p = t) |
---|
| 698 | if (t->c_time > 0) |
---|
| 699 | ticks -= t->c_time; |
---|
| 700 | new->c_time = ticks; |
---|
| 701 | if (t != NULL) |
---|
| 702 | t->c_time -= ticks; |
---|
| 703 | |
---|
| 704 | /* Insert the new entry into the queue. */ |
---|
| 705 | p->c_next = new; |
---|
| 706 | new->c_next = t; |
---|
| 707 | } |
---|
| 708 | |
---|
| 709 | /* |
---|
| 710 | * Ticks till specified time |
---|
[f74abcf7] | 711 | * XXX: This version worries only about seconds, but that's good |
---|
[39e6e65a] | 712 | * enough for the way the network code uses this routine. |
---|
| 713 | */ |
---|
| 714 | int |
---|
| 715 | hzto(struct timeval *tv) |
---|
| 716 | { |
---|
| 717 | long diff = tv->tv_sec - rtems_bsdnet_seconds_since_boot(); |
---|
| 718 | |
---|
| 719 | if (diff <= 0) |
---|
| 720 | return 1; |
---|
| 721 | return diff * rtems_bsdnet_ticks_per_second; |
---|
| 722 | } |
---|
| 723 | |
---|
| 724 | /* |
---|
| 725 | * Kernel debugging |
---|
| 726 | */ |
---|
| 727 | int rtems_bsdnet_log_priority; |
---|
| 728 | void |
---|
| 729 | rtems_bsdnet_log (int priority, const char *fmt, ...) |
---|
| 730 | { |
---|
| 731 | va_list args; |
---|
| 732 | |
---|
| 733 | if (priority & rtems_bsdnet_log_priority) { |
---|
| 734 | va_start (args, fmt); |
---|
| 735 | vprintf (fmt, args); |
---|
| 736 | va_end (args); |
---|
| 737 | } |
---|
| 738 | } |
---|
| 739 | |
---|
| 740 | /* |
---|
| 741 | * IP header checksum routine for processors which don't have an inline version |
---|
| 742 | */ |
---|
| 743 | u_int |
---|
| 744 | in_cksum_hdr (const void *ip) |
---|
| 745 | { |
---|
| 746 | rtems_unsigned32 sum; |
---|
| 747 | const rtems_unsigned16 *sp; |
---|
| 748 | int i; |
---|
| 749 | |
---|
| 750 | sum = 0; |
---|
| 751 | sp = (rtems_unsigned16 *)ip; |
---|
| 752 | for (i = 0 ; i < 10 ; i++) |
---|
| 753 | sum += *sp++; |
---|
| 754 | while (sum > 0xFFFF) |
---|
| 755 | sum = (sum & 0xffff) + (sum >> 16); |
---|
| 756 | return ~sum & 0xFFFF; |
---|
| 757 | } |
---|
| 758 | |
---|
| 759 | /* |
---|
| 760 | * Manipulate routing tables |
---|
| 761 | */ |
---|
| 762 | int rtems_bsdnet_rtrequest ( |
---|
| 763 | int req, |
---|
| 764 | struct sockaddr *dst, |
---|
| 765 | struct sockaddr *gateway, |
---|
| 766 | struct sockaddr *netmask, |
---|
| 767 | int flags, |
---|
| 768 | struct rtentry **net_nrt) |
---|
| 769 | { |
---|
| 770 | int error; |
---|
| 771 | |
---|
| 772 | rtems_bsdnet_semaphore_obtain (); |
---|
| 773 | error = rtrequest (req, dst, gateway, netmask, flags, net_nrt); |
---|
| 774 | rtems_bsdnet_semaphore_release (); |
---|
| 775 | if (error) { |
---|
| 776 | errno = error; |
---|
| 777 | return -1; |
---|
| 778 | } |
---|
| 779 | return 0; |
---|
| 780 | } |
---|
| 781 | |
---|
[4a9b897] | 782 | static int |
---|
[39e6e65a] | 783 | rtems_bsdnet_setup (void) |
---|
| 784 | { |
---|
| 785 | struct rtems_bsdnet_ifconfig *ifp; |
---|
[6f93bb4] | 786 | short flags; |
---|
[39e6e65a] | 787 | struct sockaddr_in address; |
---|
| 788 | struct sockaddr_in netmask; |
---|
| 789 | struct sockaddr_in broadcast; |
---|
| 790 | struct sockaddr_in gateway; |
---|
| 791 | int i; |
---|
[a0af97d] | 792 | extern char *strdup (const char *cp); |
---|
[39e6e65a] | 793 | |
---|
| 794 | /* |
---|
| 795 | * Set local parameters |
---|
| 796 | */ |
---|
| 797 | if (rtems_bsdnet_config.hostname) |
---|
| 798 | sethostname (rtems_bsdnet_config.hostname, |
---|
| 799 | strlen (rtems_bsdnet_config.hostname)); |
---|
| 800 | if (rtems_bsdnet_config.domainname) |
---|
| 801 | rtems_bsdnet_domain_name = |
---|
| 802 | strdup (rtems_bsdnet_config.domainname); |
---|
| 803 | if (rtems_bsdnet_config.log_host) |
---|
| 804 | rtems_bsdnet_log_host_address.s_addr = |
---|
| 805 | inet_addr (rtems_bsdnet_config.log_host); |
---|
| 806 | for (i = 0 ; i < sizeof rtems_bsdnet_config.name_server / |
---|
| 807 | sizeof rtems_bsdnet_config.name_server[0] ; i++) { |
---|
| 808 | if (!rtems_bsdnet_config.name_server[i]) |
---|
| 809 | break; |
---|
| 810 | rtems_bsdnet_nameserver[rtems_bsdnet_nameserver_count++].s_addr |
---|
| 811 | = inet_addr (rtems_bsdnet_config.name_server[i]); |
---|
| 812 | } |
---|
[a0af97d] | 813 | for (i = 0 ; i < sizeof rtems_bsdnet_config.ntp_server / |
---|
| 814 | sizeof rtems_bsdnet_config.ntp_server[0] ; i++) { |
---|
| 815 | if (!rtems_bsdnet_config.ntp_server[i]) |
---|
| 816 | break; |
---|
| 817 | rtems_bsdnet_ntpserver[rtems_bsdnet_ntpserver_count++].s_addr |
---|
| 818 | = inet_addr (rtems_bsdnet_config.ntp_server[i]); |
---|
| 819 | } |
---|
[39e6e65a] | 820 | |
---|
| 821 | /* |
---|
| 822 | * Configure interfaces |
---|
| 823 | */ |
---|
| 824 | for (ifp = rtems_bsdnet_config.ifconfig ; ifp ; ifp = ifp->next) { |
---|
| 825 | if (ifp->ip_address == NULL) |
---|
| 826 | continue; |
---|
| 827 | |
---|
| 828 | /* |
---|
| 829 | * Bring interface up |
---|
| 830 | */ |
---|
[6f93bb4] | 831 | flags = IFF_UP; |
---|
| 832 | if (rtems_bsdnet_ifconfig (ifp->name, SIOCSIFFLAGS, &flags) < 0) { |
---|
[4a9b897] | 833 | printf ("Can't bring %s up: %s\n", ifp->name, strerror (errno)); |
---|
[6f93bb4] | 834 | continue; |
---|
[4a9b897] | 835 | } |
---|
[39e6e65a] | 836 | |
---|
| 837 | /* |
---|
| 838 | * Set interface netmask |
---|
| 839 | */ |
---|
| 840 | memset (&netmask, '\0', sizeof netmask); |
---|
| 841 | netmask.sin_len = sizeof netmask; |
---|
| 842 | netmask.sin_family = AF_INET; |
---|
| 843 | netmask.sin_addr.s_addr = inet_addr (ifp->ip_netmask); |
---|
[6f93bb4] | 844 | if (rtems_bsdnet_ifconfig (ifp->name, SIOCSIFNETMASK, &netmask) < 0) { |
---|
[4a9b897] | 845 | printf ("Can't set %s netmask: %s\n", ifp->name, strerror (errno)); |
---|
[6f93bb4] | 846 | continue; |
---|
[4a9b897] | 847 | } |
---|
[39e6e65a] | 848 | |
---|
| 849 | /* |
---|
| 850 | * Set interface address |
---|
| 851 | */ |
---|
| 852 | memset (&address, '\0', sizeof address); |
---|
| 853 | address.sin_len = sizeof address; |
---|
| 854 | address.sin_family = AF_INET; |
---|
| 855 | address.sin_addr.s_addr = inet_addr (ifp->ip_address); |
---|
[6f93bb4] | 856 | if (rtems_bsdnet_ifconfig (ifp->name, SIOCSIFADDR, &address) < 0) { |
---|
[4a9b897] | 857 | printf ("Can't set %s address: %s\n", ifp->name, strerror (errno)); |
---|
[6f93bb4] | 858 | continue; |
---|
[4a9b897] | 859 | } |
---|
[39e6e65a] | 860 | |
---|
| 861 | /* |
---|
[6f93bb4] | 862 | * Set interface broadcast address if the interface has the |
---|
| 863 | * broadcast flag set. |
---|
[39e6e65a] | 864 | */ |
---|
[6f93bb4] | 865 | if (rtems_bsdnet_ifconfig (ifp->name, SIOCGIFFLAGS, &flags) < 0) { |
---|
| 866 | printf ("Can't read %s flags: %s\n", ifp->name, strerror (errno)); |
---|
| 867 | continue; |
---|
| 868 | } |
---|
| 869 | if (flags & IFF_BROADCAST) { |
---|
| 870 | memset (&broadcast, '\0', sizeof broadcast); |
---|
| 871 | broadcast.sin_len = sizeof broadcast; |
---|
| 872 | broadcast.sin_family = AF_INET; |
---|
| 873 | broadcast.sin_addr.s_addr = |
---|
| 874 | address.sin_addr.s_addr | ~netmask.sin_addr.s_addr; |
---|
| 875 | if (rtems_bsdnet_ifconfig (ifp->name, SIOCSIFBRDADDR, &broadcast) < 0) { |
---|
| 876 | struct in_addr in_addr; |
---|
| 877 | in_addr.s_addr = broadcast.sin_addr.s_addr; |
---|
| 878 | printf ("Can't set %s broadcast address %s: %s\n", |
---|
| 879 | ifp->name, inet_ntoa (in_addr), strerror (errno)); |
---|
| 880 | } |
---|
| 881 | } |
---|
[39e6e65a] | 882 | } |
---|
| 883 | |
---|
| 884 | /* |
---|
| 885 | * Set default route |
---|
| 886 | */ |
---|
| 887 | if (rtems_bsdnet_config.gateway) { |
---|
| 888 | address.sin_addr.s_addr = INADDR_ANY; |
---|
| 889 | netmask.sin_addr.s_addr = INADDR_ANY; |
---|
| 890 | memset (&gateway, '\0', sizeof gateway); |
---|
| 891 | gateway.sin_len = sizeof gateway; |
---|
| 892 | gateway.sin_family = AF_INET; |
---|
| 893 | gateway.sin_addr.s_addr = inet_addr (rtems_bsdnet_config.gateway); |
---|
| 894 | if (rtems_bsdnet_rtrequest ( |
---|
| 895 | RTM_ADD, |
---|
| 896 | (struct sockaddr *)&address, |
---|
| 897 | (struct sockaddr *)&gateway, |
---|
| 898 | (struct sockaddr *)&netmask, |
---|
[4a9b897] | 899 | (RTF_UP | RTF_GATEWAY | RTF_STATIC), NULL) < 0) { |
---|
| 900 | printf ("Can't set default route: %s\n", strerror (errno)); |
---|
| 901 | return -1; |
---|
| 902 | } |
---|
[39e6e65a] | 903 | } |
---|
[4a9b897] | 904 | return 0; |
---|
[39e6e65a] | 905 | } |
---|
| 906 | |
---|
| 907 | /* |
---|
| 908 | * Initialize the network |
---|
| 909 | */ |
---|
| 910 | int |
---|
| 911 | rtems_bsdnet_initialize_network (void) |
---|
| 912 | { |
---|
| 913 | struct rtems_bsdnet_ifconfig *ifp; |
---|
| 914 | |
---|
| 915 | /* |
---|
| 916 | * Start network tasks. |
---|
| 917 | * Initialize BSD network data structures. |
---|
| 918 | */ |
---|
[4a9b897] | 919 | if (rtems_bsdnet_initialize () < 0) |
---|
| 920 | return -1; |
---|
[39e6e65a] | 921 | |
---|
| 922 | /* |
---|
| 923 | * Attach interfaces |
---|
| 924 | */ |
---|
| 925 | for (ifp = rtems_bsdnet_config.ifconfig ; ifp ; ifp = ifp->next) { |
---|
[6f93bb4] | 926 | rtems_bsdnet_attach (ifp); |
---|
[39e6e65a] | 927 | } |
---|
| 928 | |
---|
| 929 | /* |
---|
| 930 | * Bring up the network |
---|
| 931 | */ |
---|
[4a9b897] | 932 | if (rtems_bsdnet_setup () < 0) |
---|
| 933 | return -1; |
---|
[39e6e65a] | 934 | if (rtems_bsdnet_config.bootp) |
---|
| 935 | (*rtems_bsdnet_config.bootp)(); |
---|
| 936 | return 0; |
---|
| 937 | } |
---|
[b6f5f93] | 938 | |
---|
[6f93bb4] | 939 | /* |
---|
| 940 | * Attach a network interface. |
---|
| 941 | */ |
---|
| 942 | void rtems_bsdnet_attach (struct rtems_bsdnet_ifconfig *ifp) |
---|
| 943 | { |
---|
| 944 | if (ifp) { |
---|
| 945 | rtems_bsdnet_semaphore_obtain (); |
---|
| 946 | (ifp->attach)(ifp, 1); |
---|
| 947 | rtems_bsdnet_semaphore_release (); |
---|
| 948 | } |
---|
| 949 | } |
---|
| 950 | |
---|
| 951 | /* |
---|
| 952 | * Detach a network interface. |
---|
| 953 | */ |
---|
| 954 | void rtems_bsdnet_detach (struct rtems_bsdnet_ifconfig *ifp) |
---|
| 955 | { |
---|
| 956 | if (ifp) { |
---|
| 957 | rtems_bsdnet_semaphore_obtain (); |
---|
| 958 | (ifp->attach)(ifp, 0); |
---|
| 959 | rtems_bsdnet_semaphore_release (); |
---|
| 960 | } |
---|
| 961 | } |
---|
| 962 | |
---|
| 963 | /* |
---|
| 964 | * Interface Configuration. |
---|
| 965 | */ |
---|
| 966 | int rtems_bsdnet_ifconfig (const char *ifname, unsigned32 cmd, void *param) |
---|
| 967 | { |
---|
| 968 | int s, r = 0; |
---|
| 969 | struct ifreq ifreq; |
---|
| 970 | |
---|
| 971 | /* |
---|
| 972 | * Configure interfaces |
---|
| 973 | */ |
---|
| 974 | s = socket (AF_INET, SOCK_DGRAM, 0); |
---|
| 975 | if (s < 0) |
---|
| 976 | return -1; |
---|
| 977 | |
---|
| 978 | strncpy (ifreq.ifr_name, ifname, IFNAMSIZ); |
---|
| 979 | |
---|
| 980 | rtems_bsdnet_semaphore_obtain (); |
---|
| 981 | |
---|
| 982 | switch (cmd) { |
---|
| 983 | case SIOCSIFADDR: |
---|
| 984 | case SIOCSIFNETMASK: |
---|
| 985 | memcpy (&ifreq.ifr_addr, param, sizeof (struct sockaddr)); |
---|
| 986 | r = ioctl (s, cmd, &ifreq); |
---|
| 987 | break; |
---|
| 988 | |
---|
| 989 | case OSIOCGIFADDR: |
---|
| 990 | case SIOCGIFADDR: |
---|
| 991 | case OSIOCGIFNETMASK: |
---|
| 992 | case SIOCGIFNETMASK: |
---|
| 993 | if ((r = ioctl (s, cmd, &ifreq)) < 0) |
---|
| 994 | break; |
---|
| 995 | memcpy (param, &ifreq.ifr_addr, sizeof (struct sockaddr)); |
---|
| 996 | break; |
---|
| 997 | |
---|
| 998 | case SIOCGIFFLAGS: |
---|
| 999 | case SIOCSIFFLAGS: |
---|
| 1000 | if ((r = ioctl (s, SIOCGIFFLAGS, &ifreq)) < 0) |
---|
| 1001 | break; |
---|
| 1002 | if (cmd == SIOCGIFFLAGS) { |
---|
| 1003 | *((short*) param) = ifreq.ifr_flags; |
---|
| 1004 | break; |
---|
| 1005 | } |
---|
| 1006 | ifreq.ifr_flags |= *((short*) param); |
---|
| 1007 | r = ioctl (s, SIOCSIFFLAGS, &ifreq); |
---|
| 1008 | break; |
---|
| 1009 | |
---|
| 1010 | case SIOCSIFDSTADDR: |
---|
| 1011 | memcpy (&ifreq.ifr_dstaddr, param, sizeof (struct sockaddr)); |
---|
| 1012 | r = ioctl (s, cmd, &ifreq); |
---|
| 1013 | break; |
---|
| 1014 | |
---|
| 1015 | case OSIOCGIFDSTADDR: |
---|
| 1016 | case SIOCGIFDSTADDR: |
---|
| 1017 | if ((r = ioctl (s, cmd, &ifreq)) < 0) |
---|
| 1018 | break; |
---|
| 1019 | memcpy (param, &ifreq.ifr_dstaddr, sizeof (struct sockaddr)); |
---|
| 1020 | break; |
---|
| 1021 | |
---|
| 1022 | case SIOCSIFBRDADDR: |
---|
| 1023 | memcpy (&ifreq.ifr_broadaddr, param, sizeof (struct sockaddr)); |
---|
| 1024 | r = ioctl (s, cmd, &ifreq); |
---|
| 1025 | break; |
---|
| 1026 | |
---|
| 1027 | case OSIOCGIFBRDADDR: |
---|
| 1028 | case SIOCGIFBRDADDR: |
---|
| 1029 | if ((r = ioctl (s, cmd, &ifreq)) < 0) |
---|
| 1030 | break; |
---|
| 1031 | memcpy (param, &ifreq.ifr_broadaddr, sizeof (struct sockaddr)); |
---|
| 1032 | break; |
---|
| 1033 | |
---|
| 1034 | case SIOCSIFMETRIC: |
---|
| 1035 | ifreq.ifr_metric = *((int*) param); |
---|
| 1036 | r = ioctl (s, cmd, &ifreq); |
---|
| 1037 | break; |
---|
| 1038 | |
---|
| 1039 | case SIOCGIFMETRIC: |
---|
| 1040 | if ((r = ioctl (s, cmd, &ifreq)) < 0) |
---|
| 1041 | break; |
---|
| 1042 | *((int*) param) = ifreq.ifr_metric; |
---|
| 1043 | break; |
---|
| 1044 | |
---|
| 1045 | case SIOCSIFMTU: |
---|
| 1046 | ifreq.ifr_mtu = *((int*) param); |
---|
| 1047 | r = ioctl (s, cmd, &ifreq); |
---|
| 1048 | break; |
---|
| 1049 | |
---|
| 1050 | case SIOCGIFMTU: |
---|
| 1051 | if ((r = ioctl (s, cmd, &ifreq)) < 0) |
---|
| 1052 | break; |
---|
| 1053 | *((int*) param) = ifreq.ifr_mtu; |
---|
| 1054 | break; |
---|
| 1055 | |
---|
| 1056 | case SIOCSIFPHYS: |
---|
| 1057 | ifreq.ifr_phys = *((int*) param); |
---|
| 1058 | r = ioctl (s, cmd, &ifreq); |
---|
| 1059 | break; |
---|
| 1060 | |
---|
| 1061 | case SIOCGIFPHYS: |
---|
| 1062 | if ((r = ioctl (s, cmd, &ifreq)) < 0) |
---|
| 1063 | break; |
---|
| 1064 | *((int*) param) = ifreq.ifr_phys; |
---|
| 1065 | break; |
---|
| 1066 | |
---|
| 1067 | case SIOCSIFMEDIA: |
---|
| 1068 | ifreq.ifr_media = *((int*) param); |
---|
| 1069 | r = ioctl (s, cmd, &ifreq); |
---|
| 1070 | break; |
---|
| 1071 | |
---|
| 1072 | case SIOCGIFMEDIA: |
---|
| 1073 | if ((r = ioctl (s, cmd, &ifreq)) < 0) |
---|
| 1074 | break; |
---|
| 1075 | *((int*) param) = ifreq.ifr_media; |
---|
| 1076 | break; |
---|
| 1077 | |
---|
| 1078 | default: |
---|
| 1079 | errno = EOPNOTSUPP; |
---|
| 1080 | r = -1; |
---|
| 1081 | break; |
---|
| 1082 | } |
---|
| 1083 | |
---|
| 1084 | rtems_bsdnet_semaphore_release (); |
---|
| 1085 | |
---|
| 1086 | close (s); |
---|
| 1087 | return r; |
---|
| 1088 | } |
---|
| 1089 | |
---|
[b6f5f93] | 1090 | /* |
---|
| 1091 | * Parse a network driver name into a name and a unit number |
---|
| 1092 | */ |
---|
| 1093 | int |
---|
| 1094 | rtems_bsdnet_parse_driver_name (const struct rtems_bsdnet_ifconfig *config, char **namep) |
---|
| 1095 | { |
---|
| 1096 | const char *cp = config->name; |
---|
| 1097 | char c; |
---|
| 1098 | int unitNumber = 0; |
---|
| 1099 | |
---|
| 1100 | if (cp == NULL) { |
---|
[4a9b897] | 1101 | printf ("No network driver name.\n"); |
---|
[b6f5f93] | 1102 | return -1; |
---|
| 1103 | } |
---|
| 1104 | while ((c = *cp++) != '\0') { |
---|
| 1105 | if ((c >= '0') && (c <= '9')) { |
---|
[cfcb5a2] | 1106 | int len = cp - config->name; |
---|
[b6f5f93] | 1107 | if ((len < 2) || (len > 50)) |
---|
| 1108 | break; |
---|
| 1109 | for (;;) { |
---|
| 1110 | unitNumber = (unitNumber * 10) + (c - '0'); |
---|
| 1111 | c = *cp++; |
---|
| 1112 | if (c == '\0') { |
---|
| 1113 | char *unitName = malloc (len); |
---|
| 1114 | if (unitName == NULL) { |
---|
[4a9b897] | 1115 | printf ("No memory.\n"); |
---|
[b6f5f93] | 1116 | return -1; |
---|
| 1117 | } |
---|
| 1118 | strncpy (unitName, config->name, len - 1); |
---|
| 1119 | unitName[len-1] = '\0'; |
---|
| 1120 | *namep = unitName; |
---|
| 1121 | return unitNumber; |
---|
| 1122 | } |
---|
| 1123 | if ((c < '0') || (c > '9')) |
---|
| 1124 | break; |
---|
| 1125 | } |
---|
| 1126 | break; |
---|
| 1127 | } |
---|
| 1128 | } |
---|
[4a9b897] | 1129 | printf ("Bad network driver name `%s'.\n", config->name); |
---|
[b6f5f93] | 1130 | return -1; |
---|
| 1131 | } |
---|
[11cdbeb] | 1132 | |
---|
| 1133 | /* |
---|
| 1134 | * Handle requests for more network memory |
---|
| 1135 | * XXX: Another possibility would be to use a semaphore here with |
---|
| 1136 | * a release in the mbuf free macro. I have chosen this `polling' |
---|
| 1137 | * approach because: |
---|
| 1138 | * 1) It is simpler. |
---|
| 1139 | * 2) It adds no complexity to the free macro. |
---|
| 1140 | * 3) Running out of mbufs should be a rare |
---|
| 1141 | * condition -- predeployment testing of |
---|
| 1142 | * an application should indicate the |
---|
| 1143 | * required mbuf pool size. |
---|
| 1144 | * XXX: Should there be a panic if a task is stuck in the loop for |
---|
| 1145 | * more than a minute or so? |
---|
| 1146 | */ |
---|
| 1147 | int |
---|
| 1148 | m_mballoc (int nmb, int nowait) |
---|
| 1149 | { |
---|
| 1150 | if (nowait) |
---|
| 1151 | return 0; |
---|
| 1152 | m_reclaim (); |
---|
| 1153 | if (mmbfree == NULL) { |
---|
[f74abcf7] | 1154 | int try = 0; |
---|
| 1155 | int print_limit = 30 * rtems_bsdnet_ticks_per_second; |
---|
| 1156 | |
---|
[11cdbeb] | 1157 | mbstat.m_wait++; |
---|
[f74abcf7] | 1158 | for (;;) { |
---|
[11cdbeb] | 1159 | rtems_bsdnet_semaphore_release (); |
---|
| 1160 | rtems_task_wake_after (1); |
---|
| 1161 | rtems_bsdnet_semaphore_obtain (); |
---|
[f74abcf7] | 1162 | if (mmbfree) |
---|
| 1163 | break; |
---|
| 1164 | if (++try >= print_limit) { |
---|
| 1165 | printf ("Still waiting for mbuf.\n"); |
---|
| 1166 | try = 0; |
---|
| 1167 | } |
---|
| 1168 | } |
---|
[11cdbeb] | 1169 | } |
---|
| 1170 | else { |
---|
| 1171 | mbstat.m_drops++; |
---|
| 1172 | } |
---|
| 1173 | return 1; |
---|
| 1174 | } |
---|
| 1175 | |
---|
| 1176 | int |
---|
| 1177 | m_clalloc(ncl, nowait) |
---|
| 1178 | { |
---|
| 1179 | if (nowait) |
---|
| 1180 | return 0; |
---|
| 1181 | m_reclaim (); |
---|
| 1182 | if (mclfree == NULL) { |
---|
[f74abcf7] | 1183 | int try = 0; |
---|
| 1184 | int print_limit = 30 * rtems_bsdnet_ticks_per_second; |
---|
| 1185 | |
---|
[11cdbeb] | 1186 | mbstat.m_wait++; |
---|
[f74abcf7] | 1187 | for (;;) { |
---|
[11cdbeb] | 1188 | rtems_bsdnet_semaphore_release (); |
---|
| 1189 | rtems_task_wake_after (1); |
---|
| 1190 | rtems_bsdnet_semaphore_obtain (); |
---|
[f74abcf7] | 1191 | if (mclfree) |
---|
| 1192 | break; |
---|
| 1193 | if (++try >= print_limit) { |
---|
| 1194 | printf ("Still waiting for mbuf cluster.\n"); |
---|
| 1195 | try = 0; |
---|
| 1196 | } |
---|
| 1197 | } |
---|
[11cdbeb] | 1198 | } |
---|
| 1199 | else { |
---|
| 1200 | mbstat.m_drops++; |
---|
| 1201 | } |
---|
| 1202 | return 1; |
---|
| 1203 | } |
---|