| 1 |
/* |
| 2 |
* ether_windows.cpp - Ethernet device driver |
| 3 |
* |
| 4 |
* Basilisk II (C) 1997-2008 Christian Bauer |
| 5 |
* |
| 6 |
* Windows platform specific code copyright (C) Lauri Pesonen |
| 7 |
* |
| 8 |
* This program is free software; you can redistribute it and/or modify |
| 9 |
* it under the terms of the GNU General Public License as published by |
| 10 |
* the Free Software Foundation; either version 2 of the License, or |
| 11 |
* (at your option) any later version. |
| 12 |
* |
| 13 |
* This program is distributed in the hope that it will be useful, |
| 14 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 |
* GNU General Public License for more details. |
| 17 |
* |
| 18 |
* You should have received a copy of the GNU General Public License |
| 19 |
* along with this program; if not, write to the Free Software |
| 20 |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 21 |
*/ |
| 22 |
|
| 23 |
#include "sysdeps.h" |
| 24 |
|
| 25 |
#include <process.h> |
| 26 |
#include <windowsx.h> |
| 27 |
#include <winioctl.h> |
| 28 |
#include <ctype.h> |
| 29 |
|
| 30 |
#include "cpu_emulation.h" |
| 31 |
#include "main.h" |
| 32 |
#include "macos_util.h" |
| 33 |
#include "prefs.h" |
| 34 |
#include "user_strings.h" |
| 35 |
#include "ether.h" |
| 36 |
#include "ether_defs.h" |
| 37 |
#include "b2ether/multiopt.h" |
| 38 |
#include "b2ether/inc/b2ether_hl.h" |
| 39 |
#include "ether_windows.h" |
| 40 |
#include "router/router.h" |
| 41 |
#include "kernel_windows.h" |
| 42 |
#include "libslirp.h" |
| 43 |
|
| 44 |
// Define to let the slirp library determine the right timeout for select() |
| 45 |
#define USE_SLIRP_TIMEOUT 1 |
| 46 |
|
| 47 |
|
| 48 |
#define DEBUG 0 |
| 49 |
#define MONITOR 0 |
| 50 |
|
| 51 |
#if DEBUG |
| 52 |
#pragma optimize("",off) |
| 53 |
#endif |
| 54 |
|
| 55 |
#include "debug.h" |
| 56 |
|
| 57 |
|
| 58 |
// Ethernet device types |
| 59 |
enum { |
| 60 |
NET_IF_B2ETHER, |
| 61 |
NET_IF_ROUTER, |
| 62 |
NET_IF_SLIRP, |
| 63 |
NET_IF_TAP, |
| 64 |
NET_IF_FAKE, |
| 65 |
}; |
| 66 |
|
| 67 |
// TAP-Win32 constants |
| 68 |
#define TAP_VERSION_MIN_MAJOR 7 |
| 69 |
#define TAP_VERSION_MIN_MINOR 1 |
| 70 |
|
| 71 |
#define TAP_CONTROL_CODE(request, method) \ |
| 72 |
CTL_CODE (FILE_DEVICE_UNKNOWN, request, method, FILE_ANY_ACCESS) |
| 73 |
|
| 74 |
#define TAP_IOCTL_GET_MAC TAP_CONTROL_CODE (1, METHOD_BUFFERED) |
| 75 |
#define TAP_IOCTL_GET_VERSION TAP_CONTROL_CODE (2, METHOD_BUFFERED) |
| 76 |
#define TAP_IOCTL_GET_MTU TAP_CONTROL_CODE (3, METHOD_BUFFERED) |
| 77 |
#define TAP_IOCTL_GET_INFO TAP_CONTROL_CODE (4, METHOD_BUFFERED) |
| 78 |
#define TAP_IOCTL_CONFIG_POINT_TO_POINT TAP_CONTROL_CODE (5, METHOD_BUFFERED) |
| 79 |
#define TAP_IOCTL_SET_MEDIA_STATUS TAP_CONTROL_CODE (6, METHOD_BUFFERED) |
| 80 |
#define TAP_IOCTL_CONFIG_DHCP_MASQ TAP_CONTROL_CODE (7, METHOD_BUFFERED) |
| 81 |
#define TAP_IOCTL_GET_LOG_LINE TAP_CONTROL_CODE (8, METHOD_BUFFERED) |
| 82 |
#define TAP_IOCTL_CONFIG_DHCP_SET_OPT TAP_CONTROL_CODE (9, METHOD_BUFFERED) |
| 83 |
|
| 84 |
#define OLD_TAP_CONTROL_CODE(request, method) \ |
| 85 |
CTL_CODE (FILE_DEVICE_PHYSICAL_NETCARD | 8000, request, method, FILE_ANY_ACCESS) |
| 86 |
|
| 87 |
#define OLD_TAP_IOCTL_GET_VERSION OLD_TAP_CONTROL_CODE (3, METHOD_BUFFERED) |
| 88 |
|
| 89 |
// Options |
| 90 |
bool ether_use_permanent = true; |
| 91 |
static int16 ether_multi_mode = ETHER_MULTICAST_MAC; |
| 92 |
|
| 93 |
// Global variables |
| 94 |
HANDLE ether_th; |
| 95 |
unsigned int ether_tid; |
| 96 |
HANDLE ether_th1; |
| 97 |
HANDLE ether_th2; |
| 98 |
static int net_if_type = -1; // Ethernet device type |
| 99 |
#ifdef SHEEPSHAVER |
| 100 |
static bool net_open = false; // Flag: initialization succeeded, network device open |
| 101 |
uint8 ether_addr[6]; // Our Ethernet address |
| 102 |
#endif |
| 103 |
|
| 104 |
// These are protected by queue_csection |
| 105 |
// Controls transfer for read thread to feed thread |
| 106 |
static CRITICAL_SECTION queue_csection; |
| 107 |
typedef struct _win_queue_t { |
| 108 |
uint8 *buf; |
| 109 |
int sz; |
| 110 |
} win_queue_t; |
| 111 |
#define MAX_QUEUE_ITEMS 1024 |
| 112 |
static win_queue_t queue[MAX_QUEUE_ITEMS]; |
| 113 |
static int queue_head = 0; |
| 114 |
static int queue_inx = 0; |
| 115 |
static bool wait_request = true; |
| 116 |
|
| 117 |
|
| 118 |
|
| 119 |
// Read thread protected packet pool |
| 120 |
static CRITICAL_SECTION fetch_csection; |
| 121 |
// Some people use pools as large as 64. |
| 122 |
#define PACKET_POOL_COUNT 10 |
| 123 |
static LPPACKET packets[PACKET_POOL_COUNT]; |
| 124 |
static bool wait_request2 = false; |
| 125 |
|
| 126 |
|
| 127 |
|
| 128 |
// Write thread packet queue |
| 129 |
static CRITICAL_SECTION send_csection; |
| 130 |
static LPPACKET send_queue = 0; |
| 131 |
|
| 132 |
|
| 133 |
// Write thread free packet pool |
| 134 |
static CRITICAL_SECTION wpool_csection; |
| 135 |
static LPPACKET write_packet_pool = 0; |
| 136 |
|
| 137 |
|
| 138 |
|
| 139 |
// Try to deal with echos. Protected by fetch_csection. |
| 140 |
// The code should be moved to the driver. No need to lift |
| 141 |
// the echo packets to the application level. |
| 142 |
// MAX_ECHO must be a power of two. |
| 143 |
#define MAX_ECHO (1<<2) |
| 144 |
static int echo_count = 0; |
| 145 |
typedef uint8 echo_t[1514]; |
| 146 |
static echo_t pending_packet[MAX_ECHO]; |
| 147 |
static int pending_packet_sz[MAX_ECHO]; |
| 148 |
|
| 149 |
|
| 150 |
// List of attached protocols |
| 151 |
struct NetProtocol { |
| 152 |
NetProtocol *next; |
| 153 |
uint16 type; |
| 154 |
uint32 handler; |
| 155 |
}; |
| 156 |
|
| 157 |
static NetProtocol *prot_list = NULL; |
| 158 |
|
| 159 |
|
| 160 |
static LPADAPTER fd = 0; |
| 161 |
static bool thread_active = false; |
| 162 |
static bool thread_active_1 = false; |
| 163 |
static bool thread_active_2 = false; |
| 164 |
static bool thread_active_3 = false; |
| 165 |
static HANDLE int_ack = 0; |
| 166 |
static HANDLE int_sig = 0; |
| 167 |
static HANDLE int_sig2 = 0; |
| 168 |
static HANDLE int_send_now = 0; |
| 169 |
|
| 170 |
// Prototypes |
| 171 |
static LPADAPTER tap_open_adapter(const char *dev_name); |
| 172 |
static void tap_close_adapter(LPADAPTER fd); |
| 173 |
static bool tap_check_version(LPADAPTER fd); |
| 174 |
static bool tap_set_status(LPADAPTER fd, ULONG status); |
| 175 |
static bool tap_get_mac(LPADAPTER fd, LPBYTE addr); |
| 176 |
static bool tap_receive_packet(LPADAPTER fd, LPPACKET lpPacket, BOOLEAN Sync); |
| 177 |
static bool tap_send_packet(LPADAPTER fd, LPPACKET lpPacket, BOOLEAN Sync, BOOLEAN recycle); |
| 178 |
static WINAPI unsigned int slirp_receive_func(void *arg); |
| 179 |
static WINAPI unsigned int ether_thread_feed_int(void *arg); |
| 180 |
static WINAPI unsigned int ether_thread_get_packets_nt(void *arg); |
| 181 |
static WINAPI unsigned int ether_thread_write_packets(void *arg); |
| 182 |
static void init_queue(void); |
| 183 |
static void final_queue(void); |
| 184 |
static bool allocate_read_packets(void); |
| 185 |
static void free_read_packets(void); |
| 186 |
static void free_write_packets(void); |
| 187 |
static int16 ether_do_add_multicast(uint8 *addr); |
| 188 |
static int16 ether_do_del_multicast(uint8 *addr); |
| 189 |
static int16 ether_do_write(uint32 arg); |
| 190 |
static void ether_do_interrupt(void); |
| 191 |
|
| 192 |
|
| 193 |
/* |
| 194 |
* Find protocol in list |
| 195 |
*/ |
| 196 |
|
| 197 |
static NetProtocol *find_protocol(uint16 type) |
| 198 |
{ |
| 199 |
// All 802.2 types are the same |
| 200 |
if (type <= 1500) |
| 201 |
type = 0; |
| 202 |
|
| 203 |
// Search list (we could use hashing here but there are usually only three |
| 204 |
// handlers installed: 0x0000 for AppleTalk and 0x0800/0x0806 for TCP/IP) |
| 205 |
NetProtocol *p = prot_list; |
| 206 |
while (p) { |
| 207 |
if (p->type == type) |
| 208 |
return p; |
| 209 |
p = p->next; |
| 210 |
} |
| 211 |
return NULL; |
| 212 |
} |
| 213 |
|
| 214 |
|
| 215 |
/* |
| 216 |
* Initialization |
| 217 |
*/ |
| 218 |
|
| 219 |
bool ether_init(void) |
| 220 |
{ |
| 221 |
char str[256]; |
| 222 |
|
| 223 |
// Do nothing if no Ethernet device specified |
| 224 |
const char *name = PrefsFindString("ether"); |
| 225 |
if (name == NULL) |
| 226 |
return false; |
| 227 |
|
| 228 |
ether_multi_mode = PrefsFindInt32("ethermulticastmode"); |
| 229 |
ether_use_permanent = PrefsFindBool("etherpermanentaddress"); |
| 230 |
|
| 231 |
// Determine Ethernet device type |
| 232 |
net_if_type = -1; |
| 233 |
if (PrefsFindBool("routerenabled") || strcmp(name, "router") == 0) |
| 234 |
net_if_type = NET_IF_ROUTER; |
| 235 |
else if (strcmp(name, "slirp") == 0) |
| 236 |
net_if_type = NET_IF_SLIRP; |
| 237 |
else if (strcmp(name, "tap") == 0) |
| 238 |
net_if_type = NET_IF_TAP; |
| 239 |
else |
| 240 |
net_if_type = NET_IF_B2ETHER; |
| 241 |
|
| 242 |
// Initialize NAT-Router |
| 243 |
if (net_if_type == NET_IF_ROUTER) { |
| 244 |
if (!router_init()) |
| 245 |
net_if_type = NET_IF_FAKE; |
| 246 |
} |
| 247 |
|
| 248 |
// Initialize slirp library |
| 249 |
if (net_if_type == NET_IF_SLIRP) { |
| 250 |
if (slirp_init() < 0) { |
| 251 |
sprintf(str, GetString(STR_SLIRP_NO_DNS_FOUND_WARN)); |
| 252 |
WarningAlert(str); |
| 253 |
return false; |
| 254 |
} |
| 255 |
} |
| 256 |
|
| 257 |
// Open ethernet device |
| 258 |
const char *dev_name; |
| 259 |
switch (net_if_type) { |
| 260 |
case NET_IF_B2ETHER: |
| 261 |
dev_name = PrefsFindString("etherguid"); |
| 262 |
if (dev_name == NULL || strcmp(name, "b2ether") != 0) |
| 263 |
dev_name = name; |
| 264 |
break; |
| 265 |
case NET_IF_TAP: |
| 266 |
dev_name = PrefsFindString("etherguid"); |
| 267 |
break; |
| 268 |
} |
| 269 |
if (net_if_type == NET_IF_B2ETHER) { |
| 270 |
if (dev_name == NULL) { |
| 271 |
WarningAlert("No ethernet device GUID specified. Ethernet is not available."); |
| 272 |
goto open_error; |
| 273 |
} |
| 274 |
|
| 275 |
fd = PacketOpenAdapter( dev_name, ether_multi_mode ); |
| 276 |
if (!fd) { |
| 277 |
sprintf(str, "Could not open ethernet adapter %s.", dev_name); |
| 278 |
WarningAlert(str); |
| 279 |
goto open_error; |
| 280 |
} |
| 281 |
|
| 282 |
// Get Ethernet address |
| 283 |
if(!PacketGetMAC(fd,ether_addr,ether_use_permanent)) { |
| 284 |
sprintf(str, "Could not get hardware address of device %s. Ethernet is not available.", dev_name); |
| 285 |
WarningAlert(str); |
| 286 |
goto open_error; |
| 287 |
} |
| 288 |
D(bug("Real 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])); |
| 289 |
|
| 290 |
const char *ether_fake_address; |
| 291 |
ether_fake_address = PrefsFindString("etherfakeaddress"); |
| 292 |
if(ether_fake_address && strlen(ether_fake_address) == 12) { |
| 293 |
char sm[10]; |
| 294 |
strcpy( sm, "0x00" ); |
| 295 |
for( int i=0; i<6; i++ ) { |
| 296 |
sm[2] = ether_fake_address[i*2]; |
| 297 |
sm[3] = ether_fake_address[i*2+1]; |
| 298 |
ether_addr[i] = (uint8)strtoul(sm,0,0); |
| 299 |
} |
| 300 |
D(bug("Fake 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])); |
| 301 |
} |
| 302 |
} |
| 303 |
else if (net_if_type == NET_IF_TAP) { |
| 304 |
if (dev_name == NULL) { |
| 305 |
WarningAlert("No ethernet device GUID specified. Ethernet is not available."); |
| 306 |
goto open_error; |
| 307 |
} |
| 308 |
|
| 309 |
fd = tap_open_adapter(dev_name); |
| 310 |
if (!fd) { |
| 311 |
sprintf(str, "Could not open ethernet adapter %s.", dev_name); |
| 312 |
WarningAlert(str); |
| 313 |
goto open_error; |
| 314 |
} |
| 315 |
|
| 316 |
if (!tap_check_version(fd)) { |
| 317 |
sprintf(str, "Minimal TAP-Win32 version supported is %d.%d.", TAP_VERSION_MIN_MAJOR, TAP_VERSION_MIN_MINOR); |
| 318 |
WarningAlert(str); |
| 319 |
goto open_error; |
| 320 |
} |
| 321 |
|
| 322 |
if (!tap_set_status(fd, true)) { |
| 323 |
sprintf(str, "Could not set media status to connected."); |
| 324 |
WarningAlert(str); |
| 325 |
goto open_error; |
| 326 |
} |
| 327 |
|
| 328 |
if (!tap_get_mac(fd, ether_addr)) { |
| 329 |
sprintf(str, "Could not get hardware address of device %s. Ethernet is not available.", dev_name); |
| 330 |
WarningAlert(str); |
| 331 |
goto open_error; |
| 332 |
} |
| 333 |
D(bug("Real 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])); |
| 334 |
|
| 335 |
const char *ether_fake_address; |
| 336 |
ether_fake_address = PrefsFindString("etherfakeaddress"); |
| 337 |
if (ether_fake_address && strlen(ether_fake_address) == 12) { |
| 338 |
char sm[10]; |
| 339 |
strcpy( sm, "0x00" ); |
| 340 |
for( int i=0; i<6; i++ ) { |
| 341 |
sm[2] = ether_fake_address[i*2]; |
| 342 |
sm[3] = ether_fake_address[i*2+1]; |
| 343 |
ether_addr[i] = (uint8)strtoul(sm,0,0); |
| 344 |
} |
| 345 |
} |
| 346 |
#if 1 |
| 347 |
/* |
| 348 |
If we bridge the underlying ethernet connection and the TAP |
| 349 |
device altogether, we have to use a fake address. |
| 350 |
*/ |
| 351 |
else { |
| 352 |
ether_addr[0] = 0x52; |
| 353 |
ether_addr[1] = 0x54; |
| 354 |
ether_addr[2] = 0x00; |
| 355 |
} |
| 356 |
#endif |
| 357 |
D(bug("Fake 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])); |
| 358 |
} |
| 359 |
else if (net_if_type == NET_IF_SLIRP) { |
| 360 |
ether_addr[0] = 0x52; |
| 361 |
ether_addr[1] = 0x54; |
| 362 |
ether_addr[2] = 0x00; |
| 363 |
ether_addr[3] = 0x12; |
| 364 |
ether_addr[4] = 0x34; |
| 365 |
ether_addr[5] = 0x56; |
| 366 |
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])); |
| 367 |
} |
| 368 |
else { |
| 369 |
memcpy( ether_addr, router_mac_addr, 6 ); |
| 370 |
D(bug("Fake ethernet address (same as router) %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])); |
| 371 |
} |
| 372 |
|
| 373 |
// Start packet reception thread |
| 374 |
int_ack = CreateSemaphore( 0, 0, 1, NULL); |
| 375 |
if(!int_ack) { |
| 376 |
WarningAlert("WARNING: Cannot create int_ack semaphore"); |
| 377 |
goto open_error; |
| 378 |
} |
| 379 |
|
| 380 |
// nonsignaled |
| 381 |
int_sig = CreateSemaphore( 0, 0, 1, NULL); |
| 382 |
if(!int_sig) { |
| 383 |
WarningAlert("WARNING: Cannot create int_sig semaphore"); |
| 384 |
goto open_error; |
| 385 |
} |
| 386 |
|
| 387 |
int_sig2 = CreateSemaphore( 0, 0, 1, NULL); |
| 388 |
if(!int_sig2) { |
| 389 |
WarningAlert("WARNING: Cannot create int_sig2 semaphore"); |
| 390 |
goto open_error; |
| 391 |
} |
| 392 |
|
| 393 |
int_send_now = CreateSemaphore( 0, 0, 1, NULL); |
| 394 |
if(!int_send_now) { |
| 395 |
WarningAlert("WARNING: Cannot create int_send_now semaphore"); |
| 396 |
goto open_error; |
| 397 |
} |
| 398 |
|
| 399 |
init_queue(); |
| 400 |
|
| 401 |
if(!allocate_read_packets()) goto open_error; |
| 402 |
|
| 403 |
// No need to enter wait state if we can avoid it. |
| 404 |
// These all terminate fast. |
| 405 |
|
| 406 |
if(pfnInitializeCriticalSectionAndSpinCount) { |
| 407 |
pfnInitializeCriticalSectionAndSpinCount( &fetch_csection, 5000 ); |
| 408 |
} else { |
| 409 |
InitializeCriticalSection( &fetch_csection ); |
| 410 |
} |
| 411 |
if(pfnInitializeCriticalSectionAndSpinCount) { |
| 412 |
pfnInitializeCriticalSectionAndSpinCount( &queue_csection, 5000 ); |
| 413 |
} else { |
| 414 |
InitializeCriticalSection( &queue_csection ); |
| 415 |
} |
| 416 |
if(pfnInitializeCriticalSectionAndSpinCount) { |
| 417 |
pfnInitializeCriticalSectionAndSpinCount( &send_csection, 5000 ); |
| 418 |
} else { |
| 419 |
InitializeCriticalSection( &send_csection ); |
| 420 |
} |
| 421 |
if(pfnInitializeCriticalSectionAndSpinCount) { |
| 422 |
pfnInitializeCriticalSectionAndSpinCount( &wpool_csection, 5000 ); |
| 423 |
} else { |
| 424 |
InitializeCriticalSection( &wpool_csection ); |
| 425 |
} |
| 426 |
|
| 427 |
ether_th = (HANDLE)_beginthreadex( 0, 0, ether_thread_feed_int, 0, 0, ðer_tid ); |
| 428 |
if (!ether_th) { |
| 429 |
D(bug("Failed to create ethernet thread\n")); |
| 430 |
goto open_error; |
| 431 |
} |
| 432 |
thread_active = true; |
| 433 |
|
| 434 |
unsigned int dummy; |
| 435 |
unsigned int (WINAPI *receive_func)(void *); |
| 436 |
switch (net_if_type) { |
| 437 |
case NET_IF_SLIRP: |
| 438 |
receive_func = slirp_receive_func; |
| 439 |
break; |
| 440 |
default: |
| 441 |
receive_func = ether_thread_get_packets_nt; |
| 442 |
break; |
| 443 |
} |
| 444 |
ether_th2 = (HANDLE)_beginthreadex( 0, 0, receive_func, 0, 0, &dummy ); |
| 445 |
ether_th1 = (HANDLE)_beginthreadex( 0, 0, ether_thread_write_packets, 0, 0, &dummy ); |
| 446 |
|
| 447 |
// Everything OK |
| 448 |
return true; |
| 449 |
|
| 450 |
open_error: |
| 451 |
if (thread_active) { |
| 452 |
TerminateThread(ether_th,0); |
| 453 |
ether_th = 0; |
| 454 |
if (int_ack) |
| 455 |
CloseHandle(int_ack); |
| 456 |
int_ack = 0; |
| 457 |
if(int_sig) |
| 458 |
CloseHandle(int_sig); |
| 459 |
int_sig = 0; |
| 460 |
if(int_sig2) |
| 461 |
CloseHandle(int_sig2); |
| 462 |
int_sig2 = 0; |
| 463 |
if(int_send_now) |
| 464 |
CloseHandle(int_send_now); |
| 465 |
int_send_now = 0; |
| 466 |
thread_active = false; |
| 467 |
} |
| 468 |
if (fd) { |
| 469 |
switch (net_if_type) { |
| 470 |
case NET_IF_B2ETHER: |
| 471 |
PacketCloseAdapter(fd); |
| 472 |
break; |
| 473 |
case NET_IF_TAP: |
| 474 |
tap_close_adapter(fd); |
| 475 |
break; |
| 476 |
} |
| 477 |
fd = 0; |
| 478 |
} |
| 479 |
return false; |
| 480 |
} |
| 481 |
|
| 482 |
|
| 483 |
/* |
| 484 |
* Deinitialization |
| 485 |
*/ |
| 486 |
|
| 487 |
void ether_exit(void) |
| 488 |
{ |
| 489 |
D(bug("EtherExit\n")); |
| 490 |
|
| 491 |
// Stop reception thread |
| 492 |
thread_active = false; |
| 493 |
|
| 494 |
if(int_ack) ReleaseSemaphore(int_ack,1,NULL); |
| 495 |
if(int_sig) ReleaseSemaphore(int_sig,1,NULL); |
| 496 |
if(int_sig2) ReleaseSemaphore(int_sig2,1,NULL); |
| 497 |
if(int_send_now) ReleaseSemaphore(int_send_now,1,NULL); |
| 498 |
|
| 499 |
D(bug("CancelIO if needed\n")); |
| 500 |
if (fd && fd->hFile && pfnCancelIo) |
| 501 |
pfnCancelIo(fd->hFile); |
| 502 |
|
| 503 |
// Wait max 2 secs to shut down pending io. After that, kill them. |
| 504 |
D(bug("Wait delay\n")); |
| 505 |
for( int i=0; i<10; i++ ) { |
| 506 |
if(!thread_active_1 && !thread_active_2 && !thread_active_3) break; |
| 507 |
Sleep(200); |
| 508 |
} |
| 509 |
|
| 510 |
if(thread_active_1) { |
| 511 |
D(bug("Ether killing ether_th1\n")); |
| 512 |
if(ether_th1) TerminateThread(ether_th1,0); |
| 513 |
thread_active_1 = false; |
| 514 |
} |
| 515 |
if(thread_active_2) { |
| 516 |
D(bug("Ether killing ether_th2\n")); |
| 517 |
if(ether_th2) TerminateThread(ether_th2,0); |
| 518 |
thread_active_2 = false; |
| 519 |
} |
| 520 |
if(thread_active_3) { |
| 521 |
D(bug("Ether killing thread\n")); |
| 522 |
if(ether_th) TerminateThread(ether_th,0); |
| 523 |
thread_active_3 = false; |
| 524 |
} |
| 525 |
|
| 526 |
ether_th1 = 0; |
| 527 |
ether_th2 = 0; |
| 528 |
ether_th = 0; |
| 529 |
|
| 530 |
D(bug("Closing semaphores\n")); |
| 531 |
if(int_ack) { |
| 532 |
CloseHandle(int_ack); |
| 533 |
int_ack = 0; |
| 534 |
} |
| 535 |
if(int_sig) { |
| 536 |
CloseHandle(int_sig); |
| 537 |
int_sig = 0; |
| 538 |
} |
| 539 |
if(int_sig2) { |
| 540 |
CloseHandle(int_sig2); |
| 541 |
int_sig2 = 0; |
| 542 |
} |
| 543 |
if(int_send_now) { |
| 544 |
CloseHandle(int_send_now); |
| 545 |
int_send_now = 0; |
| 546 |
} |
| 547 |
|
| 548 |
// Close ethernet device |
| 549 |
if (fd) { |
| 550 |
switch (net_if_type) { |
| 551 |
case NET_IF_B2ETHER: |
| 552 |
PacketCloseAdapter(fd); |
| 553 |
break; |
| 554 |
case NET_IF_TAP: |
| 555 |
tap_close_adapter(fd); |
| 556 |
break; |
| 557 |
} |
| 558 |
fd = 0; |
| 559 |
} |
| 560 |
|
| 561 |
// Remove all protocols |
| 562 |
D(bug("Removing protocols\n")); |
| 563 |
NetProtocol *p = prot_list; |
| 564 |
while (p) { |
| 565 |
NetProtocol *next = p->next; |
| 566 |
delete p; |
| 567 |
p = next; |
| 568 |
} |
| 569 |
prot_list = 0; |
| 570 |
|
| 571 |
D(bug("Deleting sections\n")); |
| 572 |
DeleteCriticalSection( &fetch_csection ); |
| 573 |
DeleteCriticalSection( &queue_csection ); |
| 574 |
DeleteCriticalSection( &send_csection ); |
| 575 |
DeleteCriticalSection( &wpool_csection ); |
| 576 |
|
| 577 |
D(bug("Freeing read packets\n")); |
| 578 |
free_read_packets(); |
| 579 |
|
| 580 |
D(bug("Freeing write packets\n")); |
| 581 |
free_write_packets(); |
| 582 |
|
| 583 |
D(bug("Finalizing queue\n")); |
| 584 |
final_queue(); |
| 585 |
|
| 586 |
if (net_if_type == NET_IF_ROUTER) { |
| 587 |
D(bug("Stopping router\n")); |
| 588 |
router_final(); |
| 589 |
} |
| 590 |
|
| 591 |
D(bug("EtherExit done\n")); |
| 592 |
} |
| 593 |
|
| 594 |
|
| 595 |
/* |
| 596 |
* Glue around low-level implementation |
| 597 |
*/ |
| 598 |
|
| 599 |
#ifdef SHEEPSHAVER |
| 600 |
// Error codes |
| 601 |
enum { |
| 602 |
eMultiErr = -91, |
| 603 |
eLenErr = -92, |
| 604 |
lapProtErr = -94, |
| 605 |
excessCollsns = -95 |
| 606 |
}; |
| 607 |
|
| 608 |
// Initialize ethernet |
| 609 |
void EtherInit(void) |
| 610 |
{ |
| 611 |
net_open = false; |
| 612 |
|
| 613 |
// Do nothing if the user disabled the network |
| 614 |
if (PrefsFindBool("nonet")) |
| 615 |
return; |
| 616 |
|
| 617 |
net_open = ether_init(); |
| 618 |
} |
| 619 |
|
| 620 |
// Exit ethernet |
| 621 |
void EtherExit(void) |
| 622 |
{ |
| 623 |
ether_exit(); |
| 624 |
net_open = false; |
| 625 |
} |
| 626 |
|
| 627 |
// Get ethernet hardware address |
| 628 |
void AO_get_ethernet_address(uint32 arg) |
| 629 |
{ |
| 630 |
uint8 *addr = Mac2HostAddr(arg); |
| 631 |
if (net_open) |
| 632 |
OTCopy48BitAddress(ether_addr, addr); |
| 633 |
else { |
| 634 |
addr[0] = 0x12; |
| 635 |
addr[1] = 0x34; |
| 636 |
addr[2] = 0x56; |
| 637 |
addr[3] = 0x78; |
| 638 |
addr[4] = 0x9a; |
| 639 |
addr[5] = 0xbc; |
| 640 |
} |
| 641 |
D(bug("AO_get_ethernet_address: got address %02x%02x%02x%02x%02x%02x\n", addr[0], addr[1], addr[2], addr[3], addr[4], addr[5])); |
| 642 |
} |
| 643 |
|
| 644 |
// Add multicast address |
| 645 |
void AO_enable_multicast(uint32 addr) |
| 646 |
{ |
| 647 |
if (net_open) |
| 648 |
ether_do_add_multicast(Mac2HostAddr(addr)); |
| 649 |
} |
| 650 |
|
| 651 |
// Disable multicast address |
| 652 |
void AO_disable_multicast(uint32 addr) |
| 653 |
{ |
| 654 |
if (net_open) |
| 655 |
ether_do_del_multicast(Mac2HostAddr(addr)); |
| 656 |
} |
| 657 |
|
| 658 |
// Transmit one packet |
| 659 |
void AO_transmit_packet(uint32 mp) |
| 660 |
{ |
| 661 |
if (net_open) { |
| 662 |
switch (ether_do_write(mp)) { |
| 663 |
case noErr: |
| 664 |
num_tx_packets++; |
| 665 |
break; |
| 666 |
case excessCollsns: |
| 667 |
num_tx_buffer_full++; |
| 668 |
break; |
| 669 |
} |
| 670 |
} |
| 671 |
} |
| 672 |
|
| 673 |
// Copy packet data from message block to linear buffer |
| 674 |
static inline int ether_arg_to_buffer(uint32 mp, uint8 *p) |
| 675 |
{ |
| 676 |
return ether_msgb_to_buffer(mp, p); |
| 677 |
} |
| 678 |
|
| 679 |
// Ethernet interrupt |
| 680 |
void EtherIRQ(void) |
| 681 |
{ |
| 682 |
D(bug("EtherIRQ\n")); |
| 683 |
num_ether_irq++; |
| 684 |
|
| 685 |
OTEnterInterrupt(); |
| 686 |
ether_do_interrupt(); |
| 687 |
OTLeaveInterrupt(); |
| 688 |
|
| 689 |
// Acknowledge interrupt to reception thread |
| 690 |
D(bug(" EtherIRQ done\n")); |
| 691 |
ReleaseSemaphore(int_ack,1,NULL); |
| 692 |
} |
| 693 |
#else |
| 694 |
// Add multicast address |
| 695 |
int16 ether_add_multicast(uint32 pb) |
| 696 |
{ |
| 697 |
return ether_do_add_multicast(Mac2HostAddr(pb + eMultiAddr)); |
| 698 |
} |
| 699 |
|
| 700 |
// Disable multicast address |
| 701 |
int16 ether_del_multicast(uint32 pb) |
| 702 |
{ |
| 703 |
return ether_do_del_multicast(Mac2HostAddr(pb + eMultiAddr)); |
| 704 |
} |
| 705 |
|
| 706 |
// Transmit one packet |
| 707 |
int16 ether_write(uint32 wds) |
| 708 |
{ |
| 709 |
return ether_do_write(wds); |
| 710 |
} |
| 711 |
|
| 712 |
// Copy packet data from WDS to linear buffer |
| 713 |
static inline int ether_arg_to_buffer(uint32 wds, uint8 *p) |
| 714 |
{ |
| 715 |
return ether_wds_to_buffer(wds, p); |
| 716 |
} |
| 717 |
|
| 718 |
// Dispatch packet to protocol handler |
| 719 |
static void ether_dispatch_packet(uint32 packet, uint32 length) |
| 720 |
{ |
| 721 |
// Get packet type |
| 722 |
uint16 type = ReadMacInt16(packet + 12); |
| 723 |
|
| 724 |
// Look for protocol |
| 725 |
NetProtocol *prot = find_protocol(type); |
| 726 |
if (prot == NULL) |
| 727 |
return; |
| 728 |
|
| 729 |
// No default handler |
| 730 |
if (prot->handler == 0) |
| 731 |
return; |
| 732 |
|
| 733 |
// Copy header to RHA |
| 734 |
Mac2Mac_memcpy(ether_data + ed_RHA, packet, 14); |
| 735 |
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))); |
| 736 |
|
| 737 |
// Call protocol handler |
| 738 |
M68kRegisters r; |
| 739 |
r.d[0] = type; // Packet type |
| 740 |
r.d[1] = length - 14; // Remaining packet length (without header, for ReadPacket) |
| 741 |
r.a[0] = packet + 14; // Pointer to packet (Mac address, for ReadPacket) |
| 742 |
r.a[3] = ether_data + ed_RHA + 14; // Pointer behind header in RHA |
| 743 |
r.a[4] = ether_data + ed_ReadPacket; // Pointer to ReadPacket/ReadRest routines |
| 744 |
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])); |
| 745 |
Execute68k(prot->handler, &r); |
| 746 |
} |
| 747 |
|
| 748 |
// Ethernet interrupt |
| 749 |
void EtherInterrupt(void) |
| 750 |
{ |
| 751 |
D(bug("EtherIRQ\n")); |
| 752 |
ether_do_interrupt(); |
| 753 |
|
| 754 |
// Acknowledge interrupt to reception thread |
| 755 |
D(bug(" EtherIRQ done\n")); |
| 756 |
ReleaseSemaphore(int_ack,1,NULL); |
| 757 |
} |
| 758 |
#endif |
| 759 |
|
| 760 |
|
| 761 |
/* |
| 762 |
* Reset |
| 763 |
*/ |
| 764 |
|
| 765 |
void ether_reset(void) |
| 766 |
{ |
| 767 |
D(bug("EtherReset\n")); |
| 768 |
|
| 769 |
// Remove all protocols |
| 770 |
NetProtocol *p = prot_list; |
| 771 |
while (p) { |
| 772 |
NetProtocol *next = p->next; |
| 773 |
delete p; |
| 774 |
p = next; |
| 775 |
} |
| 776 |
prot_list = NULL; |
| 777 |
} |
| 778 |
|
| 779 |
|
| 780 |
/* |
| 781 |
* Add multicast address |
| 782 |
*/ |
| 783 |
|
| 784 |
static int16 ether_do_add_multicast(uint8 *addr) |
| 785 |
{ |
| 786 |
D(bug("ether_add_multicast\n")); |
| 787 |
|
| 788 |
// We wouldn't need to do this |
| 789 |
// if(ether_multi_mode != ETHER_MULTICAST_MAC) return noErr; |
| 790 |
|
| 791 |
switch (net_if_type) { |
| 792 |
case NET_IF_B2ETHER: |
| 793 |
if (!PacketAddMulticast( fd, addr)) { |
| 794 |
D(bug("WARNING: couldn't enable multicast address\n")); |
| 795 |
return eMultiErr; |
| 796 |
} |
| 797 |
default: |
| 798 |
D(bug("ether_add_multicast: noErr\n")); |
| 799 |
return noErr; |
| 800 |
} |
| 801 |
} |
| 802 |
|
| 803 |
|
| 804 |
/* |
| 805 |
* Delete multicast address |
| 806 |
*/ |
| 807 |
|
| 808 |
int16 ether_do_del_multicast(uint8 *addr) |
| 809 |
{ |
| 810 |
D(bug("ether_del_multicast\n")); |
| 811 |
|
| 812 |
// We wouldn't need to do this |
| 813 |
// if(ether_multi_mode != ETHER_MULTICAST_MAC) return noErr; |
| 814 |
|
| 815 |
switch (net_if_type) { |
| 816 |
case NET_IF_B2ETHER: |
| 817 |
if (!PacketDelMulticast( fd, addr)) { |
| 818 |
D(bug("WARNING: couldn't disable multicast address\n")); |
| 819 |
return eMultiErr; |
| 820 |
} |
| 821 |
default: |
| 822 |
return noErr; |
| 823 |
} |
| 824 |
} |
| 825 |
|
| 826 |
|
| 827 |
/* |
| 828 |
* Attach protocol handler |
| 829 |
*/ |
| 830 |
|
| 831 |
int16 ether_attach_ph(uint16 type, uint32 handler) |
| 832 |
{ |
| 833 |
D(bug("ether_attach_ph type=0x%x, handler=0x%x\n",(int)type,handler)); |
| 834 |
|
| 835 |
// Already attached? |
| 836 |
NetProtocol *p = find_protocol(type); |
| 837 |
if (p != NULL) { |
| 838 |
D(bug("ether_attach_ph: lapProtErr\n")); |
| 839 |
return lapProtErr; |
| 840 |
} else { |
| 841 |
// No, create and attach |
| 842 |
p = new NetProtocol; |
| 843 |
p->next = prot_list; |
| 844 |
p->type = type; |
| 845 |
p->handler = handler; |
| 846 |
prot_list = p; |
| 847 |
D(bug("ether_attach_ph: noErr\n")); |
| 848 |
return noErr; |
| 849 |
} |
| 850 |
} |
| 851 |
|
| 852 |
|
| 853 |
/* |
| 854 |
* Detach protocol handler |
| 855 |
*/ |
| 856 |
|
| 857 |
int16 ether_detach_ph(uint16 type) |
| 858 |
{ |
| 859 |
D(bug("ether_detach_ph type=%08lx\n",(int)type)); |
| 860 |
|
| 861 |
NetProtocol *p = find_protocol(type); |
| 862 |
if (p != NULL) { |
| 863 |
NetProtocol *previous = 0; |
| 864 |
NetProtocol *q = prot_list; |
| 865 |
while(q) { |
| 866 |
if (q == p) { |
| 867 |
if(previous) { |
| 868 |
previous->next = q->next; |
| 869 |
} else { |
| 870 |
prot_list = q->next; |
| 871 |
} |
| 872 |
delete p; |
| 873 |
return noErr; |
| 874 |
} |
| 875 |
previous = q; |
| 876 |
q = q->next; |
| 877 |
} |
| 878 |
} |
| 879 |
return lapProtErr; |
| 880 |
} |
| 881 |
|
| 882 |
#if MONITOR |
| 883 |
static void dump_packet( uint8 *packet, int length ) |
| 884 |
{ |
| 885 |
char buf[1000], sm[10]; |
| 886 |
|
| 887 |
*buf = 0; |
| 888 |
|
| 889 |
if(length > 256) length = 256; |
| 890 |
|
| 891 |
for (int i=0; i<length; i++) { |
| 892 |
sprintf(sm," %02x", (int)packet[i]); |
| 893 |
strcat( buf, sm ); |
| 894 |
} |
| 895 |
strcat( buf, "\n" ); |
| 896 |
bug(buf); |
| 897 |
} |
| 898 |
#endif |
| 899 |
|
| 900 |
|
| 901 |
/* |
| 902 |
* Transmit raw ethernet packet |
| 903 |
*/ |
| 904 |
|
| 905 |
static void insert_send_queue( LPPACKET Packet ) |
| 906 |
{ |
| 907 |
EnterCriticalSection( &send_csection ); |
| 908 |
Packet->next = 0; |
| 909 |
if(send_queue) { |
| 910 |
LPPACKET p = send_queue; |
| 911 |
// The queue is short. It would be larger overhead to double-link it. |
| 912 |
while(p->next) p = p->next; |
| 913 |
p->next = Packet; |
| 914 |
} else { |
| 915 |
send_queue = Packet; |
| 916 |
} |
| 917 |
LeaveCriticalSection( &send_csection ); |
| 918 |
} |
| 919 |
|
| 920 |
static LPPACKET get_send_head( void ) |
| 921 |
{ |
| 922 |
LPPACKET Packet = 0; |
| 923 |
|
| 924 |
EnterCriticalSection( &send_csection ); |
| 925 |
if(send_queue) { |
| 926 |
Packet = send_queue; |
| 927 |
send_queue = send_queue->next; |
| 928 |
} |
| 929 |
LeaveCriticalSection( &send_csection ); |
| 930 |
|
| 931 |
return Packet; |
| 932 |
} |
| 933 |
|
| 934 |
static int get_write_packet_pool_sz( void ) |
| 935 |
{ |
| 936 |
LPPACKET t = write_packet_pool; |
| 937 |
int sz = 0; |
| 938 |
|
| 939 |
while(t) { |
| 940 |
t = t->next; |
| 941 |
sz++; |
| 942 |
} |
| 943 |
return(sz); |
| 944 |
} |
| 945 |
|
| 946 |
static void free_write_packets( void ) |
| 947 |
{ |
| 948 |
LPPACKET next; |
| 949 |
int i = 0; |
| 950 |
while(write_packet_pool) { |
| 951 |
next = write_packet_pool->next; |
| 952 |
D(bug("Freeing write packet %ld\n",++i)); |
| 953 |
PacketFreePacket(write_packet_pool); |
| 954 |
write_packet_pool = next; |
| 955 |
} |
| 956 |
} |
| 957 |
|
| 958 |
void recycle_write_packet( LPPACKET Packet ) |
| 959 |
{ |
| 960 |
EnterCriticalSection( &wpool_csection ); |
| 961 |
Packet->next = write_packet_pool; |
| 962 |
write_packet_pool = Packet; |
| 963 |
D(bug("Pool size after recycling = %ld\n",get_write_packet_pool_sz())); |
| 964 |
LeaveCriticalSection( &wpool_csection ); |
| 965 |
} |
| 966 |
|
| 967 |
static LPPACKET get_write_packet( UINT len ) |
| 968 |
{ |
| 969 |
LPPACKET Packet = 0; |
| 970 |
|
| 971 |
EnterCriticalSection( &wpool_csection ); |
| 972 |
if(write_packet_pool) { |
| 973 |
Packet = write_packet_pool; |
| 974 |
write_packet_pool = write_packet_pool->next; |
| 975 |
Packet->OverLapped.Offset = 0; |
| 976 |
Packet->OverLapped.OffsetHigh = 0; |
| 977 |
Packet->Length = len; |
| 978 |
Packet->BytesReceived = 0; |
| 979 |
Packet->bIoComplete = FALSE; |
| 980 |
Packet->free = TRUE; |
| 981 |
Packet->next = 0; |
| 982 |
// actually an auto-reset event. |
| 983 |
if(Packet->OverLapped.hEvent) ResetEvent(Packet->OverLapped.hEvent); |
| 984 |
} else { |
| 985 |
Packet = PacketAllocatePacket(fd,len); |
| 986 |
} |
| 987 |
|
| 988 |
D(bug("Pool size after get wr packet = %ld\n",get_write_packet_pool_sz())); |
| 989 |
|
| 990 |
LeaveCriticalSection( &wpool_csection ); |
| 991 |
|
| 992 |
return Packet; |
| 993 |
} |
| 994 |
|
| 995 |
static unsigned int ether_thread_write_packets(void *arg) |
| 996 |
{ |
| 997 |
LPPACKET Packet; |
| 998 |
|
| 999 |
thread_active_1 = true; |
| 1000 |
|
| 1001 |
D(bug("ether_thread_write_packets start\n")); |
| 1002 |
|
| 1003 |
while(thread_active) { |
| 1004 |
// must be alertable, otherwise write completion is never called |
| 1005 |
WaitForSingleObjectEx(int_send_now,INFINITE,TRUE); |
| 1006 |
while( thread_active && (Packet = get_send_head()) != 0 ) { |
| 1007 |
switch (net_if_type) { |
| 1008 |
case NET_IF_ROUTER: |
| 1009 |
if(router_write_packet((uint8 *)Packet->Buffer, Packet->Length)) { |
| 1010 |
Packet->bIoComplete = TRUE; |
| 1011 |
recycle_write_packet(Packet); |
| 1012 |
} |
| 1013 |
break; |
| 1014 |
case NET_IF_FAKE: |
| 1015 |
Packet->bIoComplete = TRUE; |
| 1016 |
recycle_write_packet(Packet); |
| 1017 |
break; |
| 1018 |
case NET_IF_B2ETHER: |
| 1019 |
if(!PacketSendPacket( fd, Packet, FALSE, TRUE )) { |
| 1020 |
// already recycled if async |
| 1021 |
} |
| 1022 |
break; |
| 1023 |
case NET_IF_TAP: |
| 1024 |
if (!tap_send_packet(fd, Packet, FALSE, TRUE)) { |
| 1025 |
// already recycled if async |
| 1026 |
} |
| 1027 |
break; |
| 1028 |
case NET_IF_SLIRP: |
| 1029 |
slirp_input((uint8 *)Packet->Buffer, Packet->Length); |
| 1030 |
Packet->bIoComplete = TRUE; |
| 1031 |
recycle_write_packet(Packet); |
| 1032 |
break; |
| 1033 |
} |
| 1034 |
} |
| 1035 |
} |
| 1036 |
|
| 1037 |
D(bug("ether_thread_write_packets exit\n")); |
| 1038 |
|
| 1039 |
thread_active_1 = false; |
| 1040 |
|
| 1041 |
return(0); |
| 1042 |
} |
| 1043 |
|
| 1044 |
static BOOL write_packet( uint8 *packet, int len ) |
| 1045 |
{ |
| 1046 |
LPPACKET Packet; |
| 1047 |
|
| 1048 |
D(bug("write_packet\n")); |
| 1049 |
|
| 1050 |
Packet = get_write_packet(len); |
| 1051 |
if(Packet) { |
| 1052 |
memcpy( Packet->Buffer, packet, len ); |
| 1053 |
|
| 1054 |
EnterCriticalSection( &fetch_csection ); |
| 1055 |
pending_packet_sz[echo_count] = min(sizeof(pending_packet),len); |
| 1056 |
memcpy( pending_packet[echo_count], packet, pending_packet_sz[echo_count] ); |
| 1057 |
echo_count = (echo_count+1) & (~(MAX_ECHO-1)); |
| 1058 |
LeaveCriticalSection( &fetch_csection ); |
| 1059 |
|
| 1060 |
insert_send_queue( Packet ); |
| 1061 |
|
| 1062 |
ReleaseSemaphore(int_send_now,1,NULL); |
| 1063 |
return(TRUE); |
| 1064 |
} else { |
| 1065 |
return(FALSE); |
| 1066 |
} |
| 1067 |
} |
| 1068 |
|
| 1069 |
static int16 ether_do_write(uint32 arg) |
| 1070 |
{ |
| 1071 |
D(bug("ether_write\n")); |
| 1072 |
|
| 1073 |
// Copy packet to buffer |
| 1074 |
uint8 packet[1514], *p = packet; |
| 1075 |
int len = ether_arg_to_buffer(arg, p); |
| 1076 |
|
| 1077 |
if(len > 1514) { |
| 1078 |
D(bug("illegal packet length: %d\n",len)); |
| 1079 |
return eLenErr; |
| 1080 |
} else { |
| 1081 |
#if MONITOR |
| 1082 |
bug("Sending Ethernet packet (%d bytes):\n",(int)len); |
| 1083 |
dump_packet( packet, len ); |
| 1084 |
#endif |
| 1085 |
} |
| 1086 |
|
| 1087 |
// Transmit packet |
| 1088 |
if (!write_packet(packet, len)) { |
| 1089 |
D(bug("WARNING: couldn't transmit packet\n")); |
| 1090 |
return excessCollsns; |
| 1091 |
} else { |
| 1092 |
// It's up to the protocol drivers to do the error checking. Even if the |
| 1093 |
// i/o completion routine returns ok, there can be errors, so there is |
| 1094 |
// no point to wait for write completion and try to make some sense of the |
| 1095 |
// possible error codes. |
| 1096 |
return noErr; |
| 1097 |
} |
| 1098 |
} |
| 1099 |
|
| 1100 |
|
| 1101 |
static void init_queue(void) |
| 1102 |
{ |
| 1103 |
queue_inx = 0; |
| 1104 |
queue_head = 0; |
| 1105 |
|
| 1106 |
for( int i=0; i<MAX_QUEUE_ITEMS; i++ ) { |
| 1107 |
queue[i].buf = (uint8 *)malloc( 1514 ); |
| 1108 |
queue[i].sz = 0; |
| 1109 |
} |
| 1110 |
} |
| 1111 |
|
| 1112 |
static void final_queue(void) |
| 1113 |
{ |
| 1114 |
for( int i=0; i<MAX_QUEUE_ITEMS; i++ ) { |
| 1115 |
if(queue[i].buf) free(queue[i].buf); |
| 1116 |
} |
| 1117 |
} |
| 1118 |
|
| 1119 |
void enqueue_packet( const uint8 *buf, int sz ) |
| 1120 |
{ |
| 1121 |
EnterCriticalSection( &queue_csection ); |
| 1122 |
if(queue[queue_inx].sz > 0) { |
| 1123 |
D(bug("ethernet queue full, packet dropped\n")); |
| 1124 |
} else { |
| 1125 |
if(sz > 1514) sz = 1514; |
| 1126 |
queue[queue_inx].sz = sz; |
| 1127 |
memcpy( queue[queue_inx].buf, buf, sz ); |
| 1128 |
queue_inx++; |
| 1129 |
if(queue_inx >= MAX_QUEUE_ITEMS) queue_inx = 0; |
| 1130 |
if(wait_request) { |
| 1131 |
wait_request = false; |
| 1132 |
ReleaseSemaphore(int_sig,1,NULL); |
| 1133 |
} |
| 1134 |
} |
| 1135 |
LeaveCriticalSection( &queue_csection ); |
| 1136 |
} |
| 1137 |
|
| 1138 |
static int dequeue_packet( uint8 *buf ) |
| 1139 |
{ |
| 1140 |
int sz; |
| 1141 |
|
| 1142 |
if(!thread_active) return(0); |
| 1143 |
|
| 1144 |
EnterCriticalSection( &queue_csection ); |
| 1145 |
sz = queue[queue_head].sz; |
| 1146 |
if(sz > 0) { |
| 1147 |
memcpy( buf, queue[queue_head].buf, sz ); |
| 1148 |
queue[queue_head].sz = 0; |
| 1149 |
queue_head++; |
| 1150 |
if(queue_head >= MAX_QUEUE_ITEMS) queue_head = 0; |
| 1151 |
} |
| 1152 |
LeaveCriticalSection( &queue_csection ); |
| 1153 |
return(sz); |
| 1154 |
} |
| 1155 |
|
| 1156 |
static void trigger_queue(void) |
| 1157 |
{ |
| 1158 |
EnterCriticalSection( &queue_csection ); |
| 1159 |
if( queue[queue_head].sz > 0 ) { |
| 1160 |
D(bug(" packet received, triggering Ethernet interrupt\n")); |
| 1161 |
SetInterruptFlag(INTFLAG_ETHER); |
| 1162 |
TriggerInterrupt(); |
| 1163 |
// of course can't wait here. |
| 1164 |
} |
| 1165 |
LeaveCriticalSection( &queue_csection ); |
| 1166 |
} |
| 1167 |
|
| 1168 |
static bool set_wait_request(void) |
| 1169 |
{ |
| 1170 |
bool result; |
| 1171 |
EnterCriticalSection( &queue_csection ); |
| 1172 |
if(queue[queue_head].sz) { |
| 1173 |
result = true; |
| 1174 |
} else { |
| 1175 |
result = false; |
| 1176 |
wait_request = true; |
| 1177 |
} |
| 1178 |
LeaveCriticalSection( &queue_csection ); |
| 1179 |
return(result); |
| 1180 |
} |
| 1181 |
|
| 1182 |
|
| 1183 |
/* |
| 1184 |
* TAP-Win32 glue |
| 1185 |
*/ |
| 1186 |
|
| 1187 |
static LPADAPTER tap_open_adapter(const char *dev_name) |
| 1188 |
{ |
| 1189 |
fd = (LPADAPTER)GlobalAllocPtr(GMEM_MOVEABLE | GMEM_ZEROINIT, sizeof(*fd)); |
| 1190 |
if (fd == NULL) |
| 1191 |
return NULL; |
| 1192 |
|
| 1193 |
char dev_path[MAX_PATH]; |
| 1194 |
snprintf(dev_path, sizeof(dev_path), |
| 1195 |
"\\\\.\\Global\\%s.tap", dev_name); |
| 1196 |
|
| 1197 |
HANDLE handle = CreateFile( |
| 1198 |
dev_path, |
| 1199 |
GENERIC_READ | GENERIC_WRITE, |
| 1200 |
0, |
| 1201 |
NULL, |
| 1202 |
OPEN_EXISTING, |
| 1203 |
FILE_ATTRIBUTE_SYSTEM | FILE_FLAG_OVERLAPPED, |
| 1204 |
NULL); |
| 1205 |
if (handle == NULL || handle == INVALID_HANDLE_VALUE) |
| 1206 |
return NULL; |
| 1207 |
|
| 1208 |
fd->hFile = handle; |
| 1209 |
return fd; |
| 1210 |
} |
| 1211 |
|
| 1212 |
static void tap_close_adapter(LPADAPTER fd) |
| 1213 |
{ |
| 1214 |
if (fd) { |
| 1215 |
if (fd->hFile) { |
| 1216 |
tap_set_status(fd, false); |
| 1217 |
CloseHandle(fd->hFile); |
| 1218 |
} |
| 1219 |
GlobalFreePtr(fd); |
| 1220 |
} |
| 1221 |
} |
| 1222 |
|
| 1223 |
static bool tap_check_version(LPADAPTER fd) |
| 1224 |
{ |
| 1225 |
ULONG len; |
| 1226 |
ULONG info[3] = { 0, }; |
| 1227 |
|
| 1228 |
if (!DeviceIoControl(fd->hFile, TAP_IOCTL_GET_VERSION, |
| 1229 |
&info, sizeof(info), |
| 1230 |
&info, sizeof(info), &len, NULL) |
| 1231 |
&& !DeviceIoControl(fd->hFile, OLD_TAP_IOCTL_GET_VERSION, |
| 1232 |
&info, sizeof(info), |
| 1233 |
&info, sizeof(info), &len, NULL)) |
| 1234 |
return false; |
| 1235 |
|
| 1236 |
if (info[0] > TAP_VERSION_MIN_MAJOR) |
| 1237 |
return true; |
| 1238 |
if (info[0] == TAP_VERSION_MIN_MAJOR && info[1] >= TAP_VERSION_MIN_MINOR) |
| 1239 |
return true; |
| 1240 |
|
| 1241 |
return false; |
| 1242 |
} |
| 1243 |
|
| 1244 |
static bool tap_set_status(LPADAPTER fd, ULONG status) |
| 1245 |
{ |
| 1246 |
DWORD len = 0; |
| 1247 |
return DeviceIoControl(fd->hFile, TAP_IOCTL_SET_MEDIA_STATUS, |
| 1248 |
&status, sizeof (status), |
| 1249 |
&status, sizeof (status), &len, NULL); |
| 1250 |
} |
| 1251 |
|
| 1252 |
static bool tap_get_mac(LPADAPTER fd, LPBYTE addr) |
| 1253 |
{ |
| 1254 |
DWORD len = 0; |
| 1255 |
return DeviceIoControl(fd->hFile, TAP_IOCTL_GET_MAC, |
| 1256 |
addr, 6, |
| 1257 |
addr, 6, &len, NULL); |
| 1258 |
|
| 1259 |
} |
| 1260 |
|
| 1261 |
static VOID CALLBACK tap_write_completion( |
| 1262 |
DWORD dwErrorCode, |
| 1263 |
DWORD dwNumberOfBytesTransfered, |
| 1264 |
LPOVERLAPPED lpOverLapped |
| 1265 |
) |
| 1266 |
{ |
| 1267 |
LPPACKET lpPacket = CONTAINING_RECORD(lpOverLapped, PACKET, OverLapped); |
| 1268 |
|
| 1269 |
lpPacket->bIoComplete = TRUE; |
| 1270 |
recycle_write_packet(lpPacket); |
| 1271 |
} |
| 1272 |
|
| 1273 |
static bool tap_send_packet( |
| 1274 |
LPADAPTER fd, |
| 1275 |
LPPACKET lpPacket, |
| 1276 |
BOOLEAN Sync, |
| 1277 |
BOOLEAN RecyclingAllowed) |
| 1278 |
{ |
| 1279 |
BOOLEAN Result; |
| 1280 |
|
| 1281 |
lpPacket->OverLapped.Offset = 0; |
| 1282 |
lpPacket->OverLapped.OffsetHigh = 0; |
| 1283 |
lpPacket->bIoComplete = FALSE; |
| 1284 |
|
| 1285 |
if (Sync) { |
| 1286 |
Result = WriteFile(fd->hFile, |
| 1287 |
lpPacket->Buffer, |
| 1288 |
lpPacket->Length, |
| 1289 |
&lpPacket->BytesReceived, |
| 1290 |
&lpPacket->OverLapped); |
| 1291 |
if (Result) { |
| 1292 |
GetOverlappedResult(fd->hFile, |
| 1293 |
&lpPacket->OverLapped, |
| 1294 |
&lpPacket->BytesReceived, |
| 1295 |
TRUE); |
| 1296 |
} |
| 1297 |
lpPacket->bIoComplete = TRUE; |
| 1298 |
if (RecyclingAllowed) |
| 1299 |
PacketFreePacket(lpPacket); |
| 1300 |
} |
| 1301 |
else { |
| 1302 |
Result = WriteFileEx(fd->hFile, |
| 1303 |
lpPacket->Buffer, |
| 1304 |
lpPacket->Length, |
| 1305 |
&lpPacket->OverLapped, |
| 1306 |
tap_write_completion); |
| 1307 |
|
| 1308 |
if (!Result && RecyclingAllowed) |
| 1309 |
recycle_write_packet(lpPacket); |
| 1310 |
} |
| 1311 |
|
| 1312 |
return Result; |
| 1313 |
} |
| 1314 |
|
| 1315 |
static bool tap_receive_packet(LPADAPTER fd, LPPACKET lpPacket, BOOLEAN Sync) |
| 1316 |
{ |
| 1317 |
BOOLEAN Result; |
| 1318 |
|
| 1319 |
lpPacket->OverLapped.Offset = 0; |
| 1320 |
lpPacket->OverLapped.OffsetHigh = 0; |
| 1321 |
lpPacket->bIoComplete = FALSE; |
| 1322 |
|
| 1323 |
if (Sync) { |
| 1324 |
Result = ReadFile(fd->hFile, |
| 1325 |
lpPacket->Buffer, |
| 1326 |
lpPacket->Length, |
| 1327 |
&lpPacket->BytesReceived, |
| 1328 |
&lpPacket->OverLapped); |
| 1329 |
if (Result) { |
| 1330 |
Result = GetOverlappedResult(fd->hFile, |
| 1331 |
&lpPacket->OverLapped, |
| 1332 |
&lpPacket->BytesReceived, |
| 1333 |
TRUE); |
| 1334 |
if (Result) |
| 1335 |
lpPacket->bIoComplete = TRUE; |
| 1336 |
else |
| 1337 |
lpPacket->free = TRUE; |
| 1338 |
} |
| 1339 |
} |
| 1340 |
else { |
| 1341 |
Result = ReadFileEx(fd->hFile, |
| 1342 |
lpPacket->Buffer, |
| 1343 |
lpPacket->Length, |
| 1344 |
&lpPacket->OverLapped, |
| 1345 |
packet_read_completion); |
| 1346 |
|
| 1347 |
if (!Result) |
| 1348 |
lpPacket->BytesReceived = 0; |
| 1349 |
} |
| 1350 |
|
| 1351 |
return Result; |
| 1352 |
} |
| 1353 |
|
| 1354 |
|
| 1355 |
/* |
| 1356 |
* SLIRP output buffer glue |
| 1357 |
*/ |
| 1358 |
|
| 1359 |
int slirp_can_output(void) |
| 1360 |
{ |
| 1361 |
return 1; |
| 1362 |
} |
| 1363 |
|
| 1364 |
void slirp_output(const uint8 *packet, int len) |
| 1365 |
{ |
| 1366 |
enqueue_packet(packet, len); |
| 1367 |
} |
| 1368 |
|
| 1369 |
static unsigned int slirp_receive_func(void *arg) |
| 1370 |
{ |
| 1371 |
D(bug("slirp_receive_func\n")); |
| 1372 |
thread_active_2 = true; |
| 1373 |
|
| 1374 |
while (thread_active) { |
| 1375 |
// Wait for packets to arrive |
| 1376 |
fd_set rfds, wfds, xfds; |
| 1377 |
int nfds, ret, timeout; |
| 1378 |
|
| 1379 |
// ... in the output queue |
| 1380 |
nfds = -1; |
| 1381 |
FD_ZERO(&rfds); |
| 1382 |
FD_ZERO(&wfds); |
| 1383 |
FD_ZERO(&xfds); |
| 1384 |
timeout = slirp_select_fill(&nfds, &rfds, &wfds, &xfds); |
| 1385 |
#if ! USE_SLIRP_TIMEOUT |
| 1386 |
timeout = 10000; |
| 1387 |
#endif |
| 1388 |
if (nfds < 0) { |
| 1389 |
/* Windows does not honour the timeout if there is not |
| 1390 |
descriptor to wait for */ |
| 1391 |
Delay_usec(timeout); |
| 1392 |
ret = 0; |
| 1393 |
} |
| 1394 |
else { |
| 1395 |
struct timeval tv; |
| 1396 |
tv.tv_sec = 0; |
| 1397 |
tv.tv_usec = timeout; |
| 1398 |
ret = select(0, &rfds, &wfds, &xfds, &tv); |
| 1399 |
} |
| 1400 |
if (ret >= 0) |
| 1401 |
slirp_select_poll(&rfds, &wfds, &xfds); |
| 1402 |
} |
| 1403 |
|
| 1404 |
D(bug("slirp_receive_func exit\n")); |
| 1405 |
thread_active_2 = false; |
| 1406 |
return 0; |
| 1407 |
} |
| 1408 |
|
| 1409 |
|
| 1410 |
/* |
| 1411 |
* Packet reception threads |
| 1412 |
*/ |
| 1413 |
|
| 1414 |
VOID CALLBACK packet_read_completion( |
| 1415 |
DWORD dwErrorCode, |
| 1416 |
DWORD dwNumberOfBytesTransfered, |
| 1417 |
LPOVERLAPPED lpOverlapped |
| 1418 |
) |
| 1419 |
{ |
| 1420 |
EnterCriticalSection( &fetch_csection ); |
| 1421 |
|
| 1422 |
LPPACKET lpPacket = CONTAINING_RECORD(lpOverlapped,PACKET,OverLapped); |
| 1423 |
|
| 1424 |
D(bug("packet_read_completion bytes=%d, error code=%d\n",dwNumberOfBytesTransfered,dwErrorCode)); |
| 1425 |
|
| 1426 |
if(thread_active && !dwErrorCode) { |
| 1427 |
int count = min(dwNumberOfBytesTransfered,1514); |
| 1428 |
if(count) { |
| 1429 |
int j = echo_count; |
| 1430 |
for(int i=MAX_ECHO; i; i--) { |
| 1431 |
j--; |
| 1432 |
if(j < 0) j = MAX_ECHO-1; |
| 1433 |
if(count == pending_packet_sz[j] && |
| 1434 |
memcmp(pending_packet[j],lpPacket->Buffer,count) == 0) |
| 1435 |
{ |
| 1436 |
D(bug("packet_read_completion discarding own packet.\n")); |
| 1437 |
dwNumberOfBytesTransfered = 0; |
| 1438 |
|
| 1439 |
j = (j+1) & (~(MAX_ECHO-1)); |
| 1440 |
if(j != echo_count) { |
| 1441 |
D(bug("Wow, this fix made some good after all...\n")); |
| 1442 |
} |
| 1443 |
|
| 1444 |
break; |
| 1445 |
} |
| 1446 |
} |
| 1447 |
// XXX drop packets that are not for us |
| 1448 |
if (net_if_type == NET_IF_TAP) { |
| 1449 |
if (memcmp((LPBYTE)lpPacket->Buffer, ether_addr, 6) != 0) |
| 1450 |
dwNumberOfBytesTransfered = 0; |
| 1451 |
} |
| 1452 |
if(dwNumberOfBytesTransfered) { |
| 1453 |
if(net_if_type != NET_IF_ROUTER || !router_read_packet((uint8 *)lpPacket->Buffer, dwNumberOfBytesTransfered)) { |
| 1454 |
enqueue_packet( (LPBYTE)lpPacket->Buffer, dwNumberOfBytesTransfered ); |
| 1455 |
} |
| 1456 |
} |
| 1457 |
} |
| 1458 |
} |
| 1459 |
|
| 1460 |
// actually an auto-reset event. |
| 1461 |
if(lpPacket->OverLapped.hEvent) ResetEvent(lpPacket->OverLapped.hEvent); |
| 1462 |
|
| 1463 |
lpPacket->free = TRUE; |
| 1464 |
lpPacket->bIoComplete = TRUE; |
| 1465 |
|
| 1466 |
if(wait_request2) { |
| 1467 |
wait_request2 = false; |
| 1468 |
ReleaseSemaphore(int_sig2,1,NULL); |
| 1469 |
} |
| 1470 |
|
| 1471 |
LeaveCriticalSection( &fetch_csection ); |
| 1472 |
} |
| 1473 |
|
| 1474 |
static BOOL has_no_completed_io(void) |
| 1475 |
{ |
| 1476 |
BOOL result = TRUE; |
| 1477 |
|
| 1478 |
EnterCriticalSection( &fetch_csection ); |
| 1479 |
|
| 1480 |
for( int i=0; i<PACKET_POOL_COUNT; i++ ) { |
| 1481 |
if(packets[i]->bIoComplete) { |
| 1482 |
result = FALSE; |
| 1483 |
break; |
| 1484 |
} |
| 1485 |
} |
| 1486 |
if(result) wait_request2 = true; |
| 1487 |
|
| 1488 |
LeaveCriticalSection( &fetch_csection ); |
| 1489 |
return(result); |
| 1490 |
} |
| 1491 |
|
| 1492 |
static bool allocate_read_packets(void) |
| 1493 |
{ |
| 1494 |
for( int i=0; i<PACKET_POOL_COUNT; i++ ) { |
| 1495 |
packets[i] = PacketAllocatePacket(fd,1514); |
| 1496 |
if(!packets[i]) { |
| 1497 |
D(bug("allocate_read_packets: out of memory\n")); |
| 1498 |
return(false); |
| 1499 |
} |
| 1500 |
} |
| 1501 |
return(true); |
| 1502 |
} |
| 1503 |
|
| 1504 |
static void free_read_packets(void) |
| 1505 |
{ |
| 1506 |
for( int i=0; i<PACKET_POOL_COUNT; i++ ) { |
| 1507 |
PacketFreePacket(packets[i]); |
| 1508 |
} |
| 1509 |
} |
| 1510 |
|
| 1511 |
static unsigned int ether_thread_get_packets_nt(void *arg) |
| 1512 |
{ |
| 1513 |
static uint8 packet[1514]; |
| 1514 |
int i, packet_sz = 0; |
| 1515 |
|
| 1516 |
thread_active_2 = true; |
| 1517 |
|
| 1518 |
D(bug("ether_thread_get_packets_nt start\n")); |
| 1519 |
|
| 1520 |
// Wait for packets to arrive. |
| 1521 |
// Obey the golden rules; keep the reads pending. |
| 1522 |
while(thread_active) { |
| 1523 |
|
| 1524 |
if(net_if_type == NET_IF_B2ETHER || net_if_type == NET_IF_TAP) { |
| 1525 |
D(bug("Pending reads\n")); |
| 1526 |
for( i=0; thread_active && i<PACKET_POOL_COUNT; i++ ) { |
| 1527 |
if(packets[i]->free) { |
| 1528 |
packets[i]->free = FALSE; |
| 1529 |
BOOLEAN Result; |
| 1530 |
switch (net_if_type) { |
| 1531 |
case NET_IF_B2ETHER: |
| 1532 |
Result = PacketReceivePacket(fd, packets[i], FALSE); |
| 1533 |
break; |
| 1534 |
case NET_IF_TAP: |
| 1535 |
Result = tap_receive_packet(fd, packets[i], FALSE); |
| 1536 |
break; |
| 1537 |
} |
| 1538 |
if (Result) { |
| 1539 |
if(packets[i]->bIoComplete) { |
| 1540 |
D(bug("Early io completion...\n")); |
| 1541 |
packet_read_completion( |
| 1542 |
ERROR_SUCCESS, |
| 1543 |
packets[i]->BytesReceived, |
| 1544 |
&packets[i]->OverLapped |
| 1545 |
); |
| 1546 |
} |
| 1547 |
} else { |
| 1548 |
packets[i]->free = TRUE; |
| 1549 |
} |
| 1550 |
} |
| 1551 |
} |
| 1552 |
} |
| 1553 |
|
| 1554 |
if(thread_active && has_no_completed_io()) { |
| 1555 |
D(bug("Waiting for int_sig2\n")); |
| 1556 |
// "problem": awakens twice in a row. Fix if you increase the pool size. |
| 1557 |
WaitForSingleObjectEx(int_sig2,INFINITE,TRUE); |
| 1558 |
} |
| 1559 |
} |
| 1560 |
|
| 1561 |
D(bug("ether_thread_get_packets_nt exit\n")); |
| 1562 |
|
| 1563 |
thread_active_2 = false; |
| 1564 |
|
| 1565 |
return 0; |
| 1566 |
} |
| 1567 |
|
| 1568 |
static unsigned int ether_thread_feed_int(void *arg) |
| 1569 |
{ |
| 1570 |
bool looping; |
| 1571 |
|
| 1572 |
thread_active_3 = true; |
| 1573 |
|
| 1574 |
D(bug("ether_thread_feed_int start\n")); |
| 1575 |
|
| 1576 |
while(thread_active) { |
| 1577 |
D(bug("Waiting for int_sig\n")); |
| 1578 |
WaitForSingleObject(int_sig,INFINITE); |
| 1579 |
// Looping this way to avoid a race condition. |
| 1580 |
D(bug("Triggering\n")); |
| 1581 |
looping = true; |
| 1582 |
while(thread_active && looping) { |
| 1583 |
trigger_queue(); |
| 1584 |
// Wait for interrupt acknowledge by EtherInterrupt() |
| 1585 |
WaitForSingleObject(int_ack,INFINITE); |
| 1586 |
if(thread_active) looping = set_wait_request(); |
| 1587 |
} |
| 1588 |
D(bug("Queue empty.\n")); |
| 1589 |
} |
| 1590 |
|
| 1591 |
D(bug("ether_thread_feed_int exit\n")); |
| 1592 |
|
| 1593 |
thread_active_3 = false; |
| 1594 |
|
| 1595 |
return 0; |
| 1596 |
} |
| 1597 |
|
| 1598 |
|
| 1599 |
/* |
| 1600 |
* Ethernet interrupt - activate deferred tasks to call IODone or protocol handlers |
| 1601 |
*/ |
| 1602 |
|
| 1603 |
static void ether_do_interrupt(void) |
| 1604 |
{ |
| 1605 |
// Call protocol handler for received packets |
| 1606 |
EthernetPacket ether_packet; |
| 1607 |
uint32 packet = ether_packet.addr(); |
| 1608 |
ssize_t length; |
| 1609 |
for (;;) { |
| 1610 |
|
| 1611 |
// Read packet from Ethernet device |
| 1612 |
length = dequeue_packet(Mac2HostAddr(packet)); |
| 1613 |
if (length < 14) |
| 1614 |
break; |
| 1615 |
|
| 1616 |
#if MONITOR |
| 1617 |
bug("Receiving Ethernet packet (%d bytes):\n",(int)length); |
| 1618 |
dump_packet( Mac2HostAddr(packet), length ); |
| 1619 |
#endif |
| 1620 |
|
| 1621 |
// Dispatch packet |
| 1622 |
ether_dispatch_packet(packet, length); |
| 1623 |
} |
| 1624 |
} |
| 1625 |
|
| 1626 |
#if DEBUG |
| 1627 |
#pragma optimize("",on) |
| 1628 |
#endif |
