| 1 |
/* |
| 2 |
* ether_beos.cpp - Ethernet device driver, BeOS specific stuff |
| 3 |
* |
| 4 |
* Basilisk II (C) 1997-2001 Christian Bauer |
| 5 |
* Portions (C) 1997-1999 Marc Hellwig |
| 6 |
* |
| 7 |
* This program is free software; you can redistribute it and/or modify |
| 8 |
* it under the terms of the GNU General Public License as published by |
| 9 |
* the Free Software Foundation; either version 2 of the License, or |
| 10 |
* (at your option) any later version. |
| 11 |
* |
| 12 |
* This program is distributed in the hope that it will be useful, |
| 13 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 |
* GNU General Public License for more details. |
| 16 |
* |
| 17 |
* You should have received a copy of the GNU General Public License |
| 18 |
* along with this program; if not, write to the Free Software |
| 19 |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 20 |
*/ |
| 21 |
|
| 22 |
#include "sysdeps.h" |
| 23 |
|
| 24 |
#include <KernelKit.h> |
| 25 |
#include <AppKit.h> |
| 26 |
#include <StorageKit.h> |
| 27 |
#include <support/List.h> |
| 28 |
|
| 29 |
#include <stdio.h> |
| 30 |
#include <stdlib.h> |
| 31 |
#include <string.h> |
| 32 |
#include <sys/socket.h> |
| 33 |
|
| 34 |
#include "cpu_emulation.h" |
| 35 |
#include "main.h" |
| 36 |
#include "prefs.h" |
| 37 |
#include "user_strings.h" |
| 38 |
#include "macos_util.h" |
| 39 |
#include "ether.h" |
| 40 |
#include "ether_defs.h" |
| 41 |
|
| 42 |
#include "sheep_net.h" |
| 43 |
|
| 44 |
#define DEBUG 0 |
| 45 |
#include "debug.h" |
| 46 |
|
| 47 |
#define MONITOR 0 |
| 48 |
|
| 49 |
|
| 50 |
// List of attached protocols |
| 51 |
struct NetProtocol { |
| 52 |
uint16 type; |
| 53 |
uint32 handler; |
| 54 |
}; |
| 55 |
|
| 56 |
static BList prot_list; |
| 57 |
|
| 58 |
|
| 59 |
// Global variables |
| 60 |
static thread_id read_thread; // Packet reception thread |
| 61 |
static bool ether_thread_active = true; // Flag for quitting the reception thread |
| 62 |
|
| 63 |
static area_id buffer_area; // Packet buffer area |
| 64 |
static net_buffer *net_buffer_ptr; // Pointer to packet buffer |
| 65 |
static uint32 rd_pos; // Current read position in packet buffer |
| 66 |
static uint32 wr_pos; // Current write position in packet buffer |
| 67 |
static sem_id read_sem, write_sem; // Semaphores to trigger packet reading/writing |
| 68 |
|
| 69 |
static int fd = -1; // UDP socket fd |
| 70 |
static bool udp_tunnel = false; |
| 71 |
|
| 72 |
|
| 73 |
// Prototypes |
| 74 |
static status_t receive_proc(void *data); |
| 75 |
|
| 76 |
|
| 77 |
/* |
| 78 |
* Find protocol in list |
| 79 |
*/ |
| 80 |
|
| 81 |
static NetProtocol *find_protocol(uint16 type) |
| 82 |
{ |
| 83 |
// All 802.2 types are the same |
| 84 |
if (type <= 1500) |
| 85 |
type = 0; |
| 86 |
|
| 87 |
// Search list (we could use hashing here but there are usually only three |
| 88 |
// handlers installed: 0x0000 for AppleTalk and 0x0800/0x0806 for TCP/IP) |
| 89 |
NetProtocol *p; |
| 90 |
for (int i=0; (p = (NetProtocol *)prot_list.ItemAt(i)) != NULL; i++) |
| 91 |
if (p->type == type) |
| 92 |
return p; |
| 93 |
return NULL; |
| 94 |
} |
| 95 |
|
| 96 |
|
| 97 |
/* |
| 98 |
* Remove all protocols |
| 99 |
*/ |
| 100 |
|
| 101 |
static void remove_all_protocols(void) |
| 102 |
{ |
| 103 |
NetProtocol *p; |
| 104 |
while ((p = (NetProtocol *)prot_list.RemoveItem((long)0)) != NULL) |
| 105 |
delete p; |
| 106 |
} |
| 107 |
|
| 108 |
|
| 109 |
/* |
| 110 |
* Initialization |
| 111 |
*/ |
| 112 |
|
| 113 |
bool ether_init(void) |
| 114 |
{ |
| 115 |
// Do nothing if no Ethernet device specified |
| 116 |
if (PrefsFindString("ether") == NULL) |
| 117 |
return false; |
| 118 |
|
| 119 |
// Find net_server team |
| 120 |
i_wanna_try_that_again: |
| 121 |
bool found_add_on = false; |
| 122 |
team_info t_info; |
| 123 |
int32 t_cookie = 0; |
| 124 |
image_info i_info; |
| 125 |
int32 i_cookie = 0; |
| 126 |
while (get_next_team_info(&t_cookie, &t_info) == B_NO_ERROR) { |
| 127 |
if (strstr(t_info.args,"net_server")!=NULL) { |
| 128 |
|
| 129 |
// Check if sheep_net add-on is loaded |
| 130 |
while (get_next_image_info(t_info.team, &i_cookie, &i_info) == B_NO_ERROR) { |
| 131 |
if (strstr(i_info.name, "sheep_net") != NULL) { |
| 132 |
found_add_on = true; |
| 133 |
break; |
| 134 |
} |
| 135 |
} |
| 136 |
} |
| 137 |
if (found_add_on) break; |
| 138 |
} |
| 139 |
if (!found_add_on) { |
| 140 |
|
| 141 |
// Search for sheep_net in network config file |
| 142 |
char str[1024]; |
| 143 |
bool sheep_net_found = false; |
| 144 |
FILE *fin = fopen("/boot/home/config/settings/network", "r"); |
| 145 |
while (!feof(fin)) { |
| 146 |
fgets(str, 1024, fin); |
| 147 |
if (strstr(str, "PROTOCOLS")) |
| 148 |
if (strstr(str, "sheep_net")) |
| 149 |
sheep_net_found = true; |
| 150 |
} |
| 151 |
fclose(fin); |
| 152 |
|
| 153 |
// It was found, so something else must be wrong |
| 154 |
if (sheep_net_found) { |
| 155 |
WarningAlert(GetString(STR_NO_NET_ADDON_WARN)); |
| 156 |
return false; |
| 157 |
} |
| 158 |
|
| 159 |
// Not found, inform the user |
| 160 |
if (!ChoiceAlert(GetString(STR_NET_CONFIG_MODIFY_WARN), GetString(STR_OK_BUTTON), GetString(STR_CANCEL_BUTTON))) |
| 161 |
return false; |
| 162 |
|
| 163 |
// Change the network config file and restart the network |
| 164 |
fin = fopen("/boot/home/config/settings/network", "r"); |
| 165 |
FILE *fout = fopen("/boot/home/config/settings/network.2", "w"); |
| 166 |
bool global_found = false; |
| 167 |
bool modified = false; |
| 168 |
while (!feof(fin)) { |
| 169 |
str[0] = 0; |
| 170 |
fgets(str, 1024, fin); |
| 171 |
if (!global_found && strstr(str, "GLOBAL:")) { |
| 172 |
global_found = true; |
| 173 |
} else if (global_found && !modified && strstr(str, "PROTOCOLS")) { |
| 174 |
str[strlen(str)-1] = 0; |
| 175 |
strcat(str, " sheep_net\n"); |
| 176 |
modified = true; |
| 177 |
} else if (global_found && !modified && strlen(str) > 2 && str[strlen(str) - 2] == ':') { |
| 178 |
fputs("\tPROTOCOLS = sheep_net\n", fout); |
| 179 |
modified = true; |
| 180 |
} |
| 181 |
fputs(str, fout); |
| 182 |
} |
| 183 |
if (!modified) |
| 184 |
fputs("\tPROTOCOLS = sheep_net\n", fout); |
| 185 |
fclose(fout); |
| 186 |
fclose(fin); |
| 187 |
remove("/boot/home/config/settings/network.orig"); |
| 188 |
rename("/boot/home/config/settings/network", "/boot/home/config/settings/network.orig"); |
| 189 |
rename("/boot/home/config/settings/network.2", "/boot/home/config/settings/network"); |
| 190 |
|
| 191 |
app_info ai; |
| 192 |
if (be_roster->GetAppInfo("application/x-vnd.Be-NETS", &ai) == B_OK) { |
| 193 |
BMessenger msg(NULL, ai.team); |
| 194 |
if (msg.IsValid()) { |
| 195 |
while (be_roster->IsRunning("application/x-vnd.Be-NETS")) { |
| 196 |
msg.SendMessage(B_QUIT_REQUESTED); |
| 197 |
snooze(500000); |
| 198 |
} |
| 199 |
} |
| 200 |
} |
| 201 |
BPath path; |
| 202 |
find_directory(B_BEOS_BOOT_DIRECTORY, &path); |
| 203 |
path.Append("Netscript"); |
| 204 |
const char *argv[3] = {"/bin/sh", path.Path(), NULL}; |
| 205 |
thread_id net_server = load_image(2, argv, (const char **)environ); |
| 206 |
resume_thread(net_server); |
| 207 |
status_t l; |
| 208 |
wait_for_thread(net_server, &l); |
| 209 |
goto i_wanna_try_that_again; |
| 210 |
} |
| 211 |
|
| 212 |
// Set up communications with add-on |
| 213 |
area_id handler_buffer; |
| 214 |
if ((handler_buffer = find_area("packet buffer")) < B_NO_ERROR) { |
| 215 |
WarningAlert(GetString(STR_NET_ADDON_INIT_FAILED)); |
| 216 |
return false; |
| 217 |
} |
| 218 |
if ((buffer_area = clone_area("local packet buffer", (void **)&net_buffer_ptr, B_ANY_ADDRESS, B_READ_AREA | B_WRITE_AREA, handler_buffer)) < B_NO_ERROR) { |
| 219 |
D(bug("EtherInit: couldn't clone packet area\n")); |
| 220 |
WarningAlert(GetString(STR_NET_ADDON_CLONE_FAILED)); |
| 221 |
return false; |
| 222 |
} |
| 223 |
if ((read_sem = create_sem(0, "ether read")) < B_NO_ERROR) { |
| 224 |
printf("FATAL: can't create Ethernet semaphore\n"); |
| 225 |
return false; |
| 226 |
} |
| 227 |
net_buffer_ptr->read_sem = read_sem; |
| 228 |
write_sem = net_buffer_ptr->write_sem; |
| 229 |
read_thread = spawn_thread(receive_proc, "Ethernet Receiver", B_URGENT_DISPLAY_PRIORITY, NULL); |
| 230 |
resume_thread(read_thread); |
| 231 |
for (int i=0; i<WRITE_PACKET_COUNT; i++) |
| 232 |
net_buffer_ptr->write[i].cmd = IN_USE | (ACTIVATE_SHEEP_NET << 8); |
| 233 |
rd_pos = wr_pos = 0; |
| 234 |
release_sem(write_sem); |
| 235 |
|
| 236 |
// Get Ethernet address |
| 237 |
memcpy(ether_addr, net_buffer_ptr->ether_addr, 6); |
| 238 |
D(bug("Ethernet address %02x %02x %02x %02x %02x %02x\n", ether_addr[0], ether_addr[1], ether_addr[2], ether_addr[3], ether_addr[4], ether_addr[5])); |
| 239 |
|
| 240 |
// Everything OK |
| 241 |
return true; |
| 242 |
} |
| 243 |
|
| 244 |
|
| 245 |
/* |
| 246 |
* Deinitialization |
| 247 |
*/ |
| 248 |
|
| 249 |
void ether_exit(void) |
| 250 |
{ |
| 251 |
// Close communications with add-on |
| 252 |
for (int i=0; i<WRITE_PACKET_COUNT; i++) |
| 253 |
net_buffer_ptr->write[i].cmd = IN_USE | (DEACTIVATE_SHEEP_NET << 8); |
| 254 |
release_sem(write_sem); |
| 255 |
|
| 256 |
// Quit reception thread |
| 257 |
ether_thread_active = false; |
| 258 |
status_t result; |
| 259 |
release_sem(read_sem); |
| 260 |
wait_for_thread(read_thread, &result); |
| 261 |
|
| 262 |
delete_sem(read_sem); |
| 263 |
delete_area(buffer_area); |
| 264 |
|
| 265 |
// Remove all protocols |
| 266 |
remove_all_protocols(); |
| 267 |
} |
| 268 |
|
| 269 |
|
| 270 |
/* |
| 271 |
* Reset |
| 272 |
*/ |
| 273 |
|
| 274 |
void ether_reset(void) |
| 275 |
{ |
| 276 |
remove_all_protocols(); |
| 277 |
} |
| 278 |
|
| 279 |
|
| 280 |
/* |
| 281 |
* Add multicast address |
| 282 |
*/ |
| 283 |
|
| 284 |
int16 ether_add_multicast(uint32 pb) |
| 285 |
{ |
| 286 |
net_packet *p = &net_buffer_ptr->write[wr_pos]; |
| 287 |
if (p->cmd & IN_USE) { |
| 288 |
D(bug("WARNING: Couldn't enable multicast address\n")); |
| 289 |
} else { |
| 290 |
Mac2Host_memcpy(p->data, pb + eMultiAddr, 6); |
| 291 |
p->length = 6; |
| 292 |
p->cmd = IN_USE | (ADD_MULTICAST << 8); |
| 293 |
wr_pos = (wr_pos + 1) % WRITE_PACKET_COUNT; |
| 294 |
release_sem(write_sem); |
| 295 |
} |
| 296 |
return noErr; |
| 297 |
} |
| 298 |
|
| 299 |
|
| 300 |
/* |
| 301 |
* Delete multicast address |
| 302 |
*/ |
| 303 |
|
| 304 |
int16 ether_del_multicast(uint32 pb) |
| 305 |
{ |
| 306 |
net_packet *p = &net_buffer_ptr->write[wr_pos]; |
| 307 |
if (p->cmd & IN_USE) { |
| 308 |
D(bug("WARNING: Couldn't enable multicast address\n")); |
| 309 |
} else { |
| 310 |
Mac2Host_memcpy(p->data, pb + eMultiAddr, 6); |
| 311 |
p->length = 6; |
| 312 |
p->cmd = IN_USE | (REMOVE_MULTICAST << 8); |
| 313 |
wr_pos = (wr_pos + 1) % WRITE_PACKET_COUNT; |
| 314 |
release_sem(write_sem); |
| 315 |
} |
| 316 |
return noErr; |
| 317 |
} |
| 318 |
|
| 319 |
|
| 320 |
/* |
| 321 |
* Attach protocol handler |
| 322 |
*/ |
| 323 |
|
| 324 |
int16 ether_attach_ph(uint16 type, uint32 handler) |
| 325 |
{ |
| 326 |
// Already attached? |
| 327 |
NetProtocol *p = find_protocol(type); |
| 328 |
if (p != NULL) |
| 329 |
return lapProtErr; |
| 330 |
else { |
| 331 |
// No, create and attach |
| 332 |
p = new NetProtocol; |
| 333 |
p->type = type; |
| 334 |
p->handler = handler; |
| 335 |
prot_list.AddItem(p); |
| 336 |
return noErr; |
| 337 |
} |
| 338 |
} |
| 339 |
|
| 340 |
|
| 341 |
/* |
| 342 |
* Detach protocol handler |
| 343 |
*/ |
| 344 |
|
| 345 |
int16 ether_detach_ph(uint16 type) |
| 346 |
{ |
| 347 |
NetProtocol *p = find_protocol(type); |
| 348 |
if (p != NULL) { |
| 349 |
prot_list.RemoveItem(p); |
| 350 |
delete p; |
| 351 |
return noErr; |
| 352 |
} else |
| 353 |
return lapProtErr; |
| 354 |
} |
| 355 |
|
| 356 |
|
| 357 |
/* |
| 358 |
* Transmit raw ethernet packet |
| 359 |
*/ |
| 360 |
|
| 361 |
int16 ether_write(uint32 wds) |
| 362 |
{ |
| 363 |
net_packet *p = &net_buffer_ptr->write[wr_pos]; |
| 364 |
if (p->cmd & IN_USE) { |
| 365 |
D(bug("WARNING: Couldn't transmit packet (buffer full)\n")); |
| 366 |
} else { |
| 367 |
|
| 368 |
// Copy packet to buffer |
| 369 |
int len = ether_wds_to_buffer(wds, p->data); |
| 370 |
|
| 371 |
#if MONITOR |
| 372 |
bug("Sending Ethernet packet:\n"); |
| 373 |
for (int i=0; i<len; i++) { |
| 374 |
bug("%02x ", p->data[i]); |
| 375 |
} |
| 376 |
bug("\n"); |
| 377 |
#endif |
| 378 |
|
| 379 |
// Notify add-on |
| 380 |
p->length = len; |
| 381 |
p->cmd = IN_USE | (SHEEP_PACKET << 8); |
| 382 |
wr_pos = (wr_pos + 1) % WRITE_PACKET_COUNT; |
| 383 |
release_sem(write_sem); |
| 384 |
} |
| 385 |
return noErr; |
| 386 |
} |
| 387 |
|
| 388 |
|
| 389 |
/* |
| 390 |
* Packet reception thread (non-UDP) |
| 391 |
*/ |
| 392 |
|
| 393 |
static status_t receive_proc(void *data) |
| 394 |
{ |
| 395 |
while (ether_thread_active) { |
| 396 |
if (net_buffer_ptr->read[rd_pos].cmd & IN_USE) { |
| 397 |
D(bug(" packet received, triggering Ethernet interrupt\n")); |
| 398 |
SetInterruptFlag(INTFLAG_ETHER); |
| 399 |
TriggerInterrupt(); |
| 400 |
} |
| 401 |
acquire_sem_etc(read_sem, 1, B_TIMEOUT, 25000); |
| 402 |
} |
| 403 |
return 0; |
| 404 |
} |
| 405 |
|
| 406 |
|
| 407 |
/* |
| 408 |
* Packet reception thread (UDP) |
| 409 |
*/ |
| 410 |
|
| 411 |
static status_t receive_proc_udp(void *data) |
| 412 |
{ |
| 413 |
while (ether_thread_active) { |
| 414 |
fd_set readfds; |
| 415 |
FD_ZERO(&readfds); |
| 416 |
FD_SET(fd, &readfds); |
| 417 |
struct timeval timeout; |
| 418 |
timeout.tv_sec = 1; |
| 419 |
timeout.tv_usec = 0; |
| 420 |
if (select(fd+1, &readfds, NULL, NULL, &timeout) > 0) { |
| 421 |
D(bug(" packet received, triggering Ethernet interrupt\n")); |
| 422 |
SetInterruptFlag(INTFLAG_ETHER); |
| 423 |
TriggerInterrupt(); |
| 424 |
} |
| 425 |
} |
| 426 |
return 0; |
| 427 |
} |
| 428 |
|
| 429 |
|
| 430 |
/* |
| 431 |
* Start UDP packet reception thread |
| 432 |
*/ |
| 433 |
|
| 434 |
bool ether_start_udp_thread(int socket_fd) |
| 435 |
{ |
| 436 |
fd = socket_fd; |
| 437 |
udp_tunnel = true; |
| 438 |
ether_thread_active = true; |
| 439 |
read_thread = spawn_thread(receive_proc_udp, "UDP Receiver", B_URGENT_DISPLAY_PRIORITY, NULL); |
| 440 |
resume_thread(read_thread); |
| 441 |
return true; |
| 442 |
} |
| 443 |
|
| 444 |
|
| 445 |
/* |
| 446 |
* Stop UDP packet reception thread |
| 447 |
*/ |
| 448 |
|
| 449 |
void ether_stop_udp_thread(void) |
| 450 |
{ |
| 451 |
ether_thread_active = false; |
| 452 |
status_t result; |
| 453 |
wait_for_thread(read_thread, &result); |
| 454 |
} |
| 455 |
|
| 456 |
|
| 457 |
/* |
| 458 |
* Ethernet interrupt - activate deferred tasks to call IODone or protocol handlers |
| 459 |
*/ |
| 460 |
|
| 461 |
void EtherInterrupt(void) |
| 462 |
{ |
| 463 |
D(bug("EtherIRQ\n")); |
| 464 |
|
| 465 |
if (udp_tunnel) { |
| 466 |
|
| 467 |
uint8 packet[1514]; |
| 468 |
ssize_t length; |
| 469 |
|
| 470 |
// Read packets from socket and hand to ether_udp_read() for processing |
| 471 |
while (true) { |
| 472 |
struct sockaddr_in from; |
| 473 |
socklen_t from_len = sizeof(from); |
| 474 |
length = recvfrom(fd, packet, 1514, 0, (struct sockaddr *)&from, &from_len); |
| 475 |
if (length < 14) |
| 476 |
break; |
| 477 |
ether_udp_read(packet, length, &from); |
| 478 |
} |
| 479 |
|
| 480 |
} else { |
| 481 |
|
| 482 |
// Call protocol handler for received packets |
| 483 |
net_packet *p = &net_buffer_ptr->read[rd_pos]; |
| 484 |
while (p->cmd & IN_USE) { |
| 485 |
if ((p->cmd >> 8) == SHEEP_PACKET) { |
| 486 |
#if MONITOR |
| 487 |
bug("Receiving Ethernet packet:\n"); |
| 488 |
for (int i=0; i<p->length; i++) { |
| 489 |
bug("%02x ", p->data[i]); |
| 490 |
} |
| 491 |
bug("\n"); |
| 492 |
#endif |
| 493 |
// Get packet type |
| 494 |
uint16 type = ntohs(*(uint16 *)(p->data + 12)); |
| 495 |
|
| 496 |
// Look for protocol |
| 497 |
NetProtocol *prot = find_protocol(type); |
| 498 |
if (prot == NULL) |
| 499 |
goto next; |
| 500 |
|
| 501 |
// No default handler |
| 502 |
if (prot->handler == 0) |
| 503 |
goto next; |
| 504 |
|
| 505 |
// Copy header to RHA |
| 506 |
Host2Mac_memcpy(ether_data + ed_RHA, p->data, 14); |
| 507 |
D(bug(" header %08lx%04lx %08lx%04lx %04lx\n", ReadMacInt32(ether_data + ed_RHA), ReadMacInt16(ether_data + ed_RHA + 4), ReadMacInt32(ether_data + ed_RHA + 6), ReadMacInt16(ether_data + ed_RHA + 10), ReadMacInt16(ether_data + ed_RHA + 12))); |
| 508 |
|
| 509 |
// Call protocol handler |
| 510 |
M68kRegisters r; |
| 511 |
r.d[0] = type; // Packet type |
| 512 |
r.d[1] = p->length - 14; // Remaining packet length (without header, for ReadPacket) |
| 513 |
r.a[0] = (uint32)p->data + 14; // Pointer to packet (host address, for ReadPacket) |
| 514 |
r.a[3] = ether_data + ed_RHA + 14; // Pointer behind header in RHA |
| 515 |
r.a[4] = ether_data + ed_ReadPacket; // Pointer to ReadPacket/ReadRest routines |
| 516 |
D(bug(" calling protocol handler %08lx, type %08lx, length %08lx, data %08lx, rha %08lx, read_packet %08lx\n", prot->handler, r.d[0], r.d[1], r.a[0], r.a[3], r.a[4])); |
| 517 |
Execute68k(prot->handler, &r); |
| 518 |
} |
| 519 |
next: p->cmd = 0; // Free packet |
| 520 |
rd_pos = (rd_pos + 1) % READ_PACKET_COUNT; |
| 521 |
p = &net_buffer_ptr->read[rd_pos]; |
| 522 |
} |
| 523 |
} |
| 524 |
D(bug(" EtherIRQ done\n")); |
| 525 |
} |
