| 1 |
/* |
| 2 |
* ether.cpp - SheepShaver Ethernet Device Driver (DLPI) |
| 3 |
* |
| 4 |
* SheepShaver (C) 1997-2002 Marc Hellwig and Christian Bauer |
| 5 |
* |
| 6 |
* This program is free software; you can redistribute it and/or modify |
| 7 |
* it under the terms of the GNU General Public License as published by |
| 8 |
* the Free Software Foundation; either version 2 of the License, or |
| 9 |
* (at your option) any later version. |
| 10 |
* |
| 11 |
* This program is distributed in the hope that it will be useful, |
| 12 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 |
* GNU General Public License for more details. |
| 15 |
* |
| 16 |
* You should have received a copy of the GNU General Public License |
| 17 |
* along with this program; if not, write to the Free Software |
| 18 |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 |
*/ |
| 20 |
|
| 21 |
/* |
| 22 |
* TODO |
| 23 |
* - 802.2 TEST/XID |
| 24 |
* - MIB statistics |
| 25 |
*/ |
| 26 |
|
| 27 |
#include <string.h> |
| 28 |
|
| 29 |
#include "sysdeps.h" |
| 30 |
#include "ether.h" |
| 31 |
#include "ether_defs.h" |
| 32 |
#include "macos_util.h" |
| 33 |
#include "cpu_emulation.h" |
| 34 |
#include "emul_op.h" |
| 35 |
#include "main.h" |
| 36 |
|
| 37 |
#define DEBUG 0 |
| 38 |
#include "debug.h" |
| 39 |
|
| 40 |
|
| 41 |
// Packet types |
| 42 |
enum { |
| 43 |
kPktDIX = 0, |
| 44 |
kPkt8022SAP = 1, |
| 45 |
kPkt8022GroupSAP = 2, |
| 46 |
kPkt8022SNAP = 3, |
| 47 |
kPktIPX = 4, |
| 48 |
kPktUnknown = 5 |
| 49 |
}; |
| 50 |
|
| 51 |
|
| 52 |
/* |
| 53 |
* Stream private data structure |
| 54 |
*/ |
| 55 |
|
| 56 |
static const int kGroupSAPMapSize = 128/32; // Number of 32-bit values we need for 128 bits |
| 57 |
static const int kGSshift = 6; |
| 58 |
static const int kGSmask = 0x1F; |
| 59 |
|
| 60 |
struct multicast_node { |
| 61 |
multicast_node *next; |
| 62 |
uint8 addr[kEnetPhysicalAddressLength]; |
| 63 |
}; |
| 64 |
|
| 65 |
struct DLPIStream { |
| 66 |
void SetGroupSAP(uint8 sap) |
| 67 |
{ |
| 68 |
group_sap[sap >> kGSshift] |= (1L << ((sap >> 1) & kGSmask)); |
| 69 |
} |
| 70 |
|
| 71 |
void ClearGroupSAP(uint8 sap) |
| 72 |
{ |
| 73 |
group_sap[sap >> kGSshift] &= ~(1L << ((sap >> 1) & kGSmask)); |
| 74 |
} |
| 75 |
|
| 76 |
void ClearAllGroupSAPs(void) |
| 77 |
{ |
| 78 |
for (int i=0; i<kGroupSAPMapSize; i++) |
| 79 |
group_sap[i] = 0; |
| 80 |
} |
| 81 |
|
| 82 |
bool TestGroupSAP(uint8 sap) |
| 83 |
{ |
| 84 |
return group_sap[sap >> kGSshift] & (1L << ((sap >> 1) & kGSmask)); |
| 85 |
} |
| 86 |
|
| 87 |
void AddMulticast(uint8 *addr) |
| 88 |
{ |
| 89 |
multicast_node *n = new multicast_node; |
| 90 |
memcpy(n->addr, addr, kEnetPhysicalAddressLength); |
| 91 |
n->next = multicast_list; |
| 92 |
multicast_list = n; |
| 93 |
} |
| 94 |
|
| 95 |
void RemoveMulticast(uint8 *addr) |
| 96 |
{ |
| 97 |
multicast_node *p = multicast_list; |
| 98 |
while (p) { |
| 99 |
if (memcmp(addr, p->addr, kEnetPhysicalAddressLength) == 0) |
| 100 |
goto found; |
| 101 |
p = p->next; |
| 102 |
} |
| 103 |
return; |
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found: |
| 105 |
multicast_node *q = (multicast_node *)&multicast_list; |
| 106 |
while (q) { |
| 107 |
if (q->next == p) { |
| 108 |
q->next = p->next; |
| 109 |
delete p; |
| 110 |
return; |
| 111 |
} |
| 112 |
q = q->next; |
| 113 |
} |
| 114 |
} |
| 115 |
|
| 116 |
uint8 *IsMulticastRegistered(uint8 *addr) |
| 117 |
{ |
| 118 |
multicast_node *n = multicast_list; |
| 119 |
while (n) { |
| 120 |
if (memcmp(addr, n->addr, kEnetPhysicalAddressLength) == 0) |
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return n->addr; |
| 122 |
n = n->next; |
| 123 |
} |
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return NULL; |
| 125 |
} |
| 126 |
|
| 127 |
uint32 minor_num; // Minor device number of this stream |
| 128 |
uint32 dlpi_state; // DLPI state of this stream |
| 129 |
uint32 flags; // Flags |
| 130 |
uint16 dlsap; // SAP bound to this stream |
| 131 |
bool framing_8022; // Using 802.2 framing? This is only used to report the MAC type for DL_INFO_ACK and can be set with an ioctl() call |
| 132 |
queue_t *rdq; // Read queue for this stream |
| 133 |
uint32 group_sap[kGroupSAPMapSize]; // Map of bound group SAPs |
| 134 |
uint8 snap[k8022SNAPLength]; // SNAP bound to this stream |
| 135 |
multicast_node *multicast_list; // List of enabled multicast addresses |
| 136 |
}; |
| 137 |
|
| 138 |
// Stream flags |
| 139 |
enum { |
| 140 |
kSnapStream = 0x00000001, |
| 141 |
kAcceptMulticasts = 0x00000002, |
| 142 |
kAcceptAll8022Packets = 0x00000004, |
| 143 |
kFastPathMode = 0x00000008 |
| 144 |
}; |
| 145 |
|
| 146 |
// List of opened streams (used internally by OpenTransport) |
| 147 |
static DLPIStream *dlpi_stream_list = NULL; |
| 148 |
|
| 149 |
// Are we open? |
| 150 |
bool ether_driver_opened = false; |
| 151 |
|
| 152 |
// Our ethernet hardware address |
| 153 |
static uint8 hardware_address[6] = {0, 0, 0, 0, 0, 0}; |
| 154 |
|
| 155 |
// Statistics |
| 156 |
int32 num_wput = 0; |
| 157 |
int32 num_error_acks = 0; |
| 158 |
int32 num_tx_packets = 0; |
| 159 |
int32 num_tx_raw_packets = 0; |
| 160 |
int32 num_tx_normal_packets = 0; |
| 161 |
int32 num_tx_buffer_full = 0; |
| 162 |
int32 num_rx_packets = 0; |
| 163 |
int32 num_ether_irq = 0; |
| 164 |
int32 num_unitdata_ind = 0; |
| 165 |
int32 num_rx_fastpath = 0; |
| 166 |
int32 num_rx_no_mem = 0; |
| 167 |
int32 num_rx_dropped = 0; |
| 168 |
int32 num_rx_stream_not_ready = 0; |
| 169 |
int32 num_rx_no_unitdata_mem = 0; |
| 170 |
|
| 171 |
|
| 172 |
// Function pointers of imported functions |
| 173 |
typedef mblk_t *(*allocb_ptr)(size_t size, int pri); |
| 174 |
static uint32 allocb_tvect = 0; |
| 175 |
mblk_t *allocb(size_t arg1, int arg2) |
| 176 |
{ |
| 177 |
return (mblk_t *)CallMacOS2(allocb_ptr, allocb_tvect, arg1, arg2); |
| 178 |
} |
| 179 |
typedef void (*freeb_ptr)(mblk_t *); |
| 180 |
static uint32 freeb_tvect = 0; |
| 181 |
static inline void freeb(mblk_t *arg1) |
| 182 |
{ |
| 183 |
CallMacOS1(freeb_ptr, freeb_tvect, arg1); |
| 184 |
} |
| 185 |
typedef int16 (*freemsg_ptr)(mblk_t *); |
| 186 |
static uint32 freemsg_tvect = 0; |
| 187 |
static inline int16 freemsg(mblk_t *arg1) |
| 188 |
{ |
| 189 |
return (int16)CallMacOS1(freemsg_ptr, freemsg_tvect, arg1); |
| 190 |
} |
| 191 |
typedef mblk_t *(*copyb_ptr)(mblk_t *); |
| 192 |
static uint32 copyb_tvect = 0; |
| 193 |
static inline mblk_t *copyb(mblk_t *arg1) |
| 194 |
{ |
| 195 |
return (mblk_t *)CallMacOS1(copyb_ptr, copyb_tvect, arg1); |
| 196 |
} |
| 197 |
typedef mblk_t *(*dupmsg_ptr)(mblk_t *); |
| 198 |
static uint32 dupmsg_tvect = 0; |
| 199 |
static inline mblk_t *dupmsg(mblk_t *arg1) |
| 200 |
{ |
| 201 |
return (mblk_t *)CallMacOS1(dupmsg_ptr, dupmsg_tvect, arg1); |
| 202 |
} |
| 203 |
typedef mblk_t *(*getq_ptr)(queue_t *); |
| 204 |
static uint32 getq_tvect = 0; |
| 205 |
static inline mblk_t *getq(queue_t *arg1) |
| 206 |
{ |
| 207 |
return (mblk_t *)CallMacOS1(getq_ptr, getq_tvect, arg1); |
| 208 |
} |
| 209 |
typedef int (*putq_ptr)(queue_t *, mblk_t *); |
| 210 |
static uint32 putq_tvect = 0; |
| 211 |
static inline int putq(queue_t *arg1, mblk_t *arg2) |
| 212 |
{ |
| 213 |
return (int)CallMacOS2(putq_ptr, putq_tvect, arg1, arg2); |
| 214 |
} |
| 215 |
typedef int (*putnext_ptr)(queue_t *, mblk_t *); |
| 216 |
static uint32 putnext_tvect = 0; |
| 217 |
static inline int putnext(queue_t *arg1, mblk_t *arg2) |
| 218 |
{ |
| 219 |
return (int)CallMacOS2(putnext_ptr, putnext_tvect, arg1, arg2); |
| 220 |
} |
| 221 |
typedef int (*putnextctl1_ptr)(queue_t *, int type, int c); |
| 222 |
static uint32 putnextctl1_tvect = 0; |
| 223 |
static inline int putnextctl1(queue_t *arg1, int arg2, int arg3) |
| 224 |
{ |
| 225 |
return (int)CallMacOS3(putnextctl1_ptr, putnextctl1_tvect, arg1, arg2, arg3); |
| 226 |
} |
| 227 |
typedef int (*canputnext_ptr)(queue_t *); |
| 228 |
static uint32 canputnext_tvect = 0; |
| 229 |
static inline int canputnext(queue_t *arg1) |
| 230 |
{ |
| 231 |
return (int)CallMacOS1(canputnext_ptr, canputnext_tvect, arg1); |
| 232 |
} |
| 233 |
typedef int (*qreply_ptr)(queue_t *, mblk_t *); |
| 234 |
static uint32 qreply_tvect = 0; |
| 235 |
static inline int qreply(queue_t *arg1, mblk_t *arg2) |
| 236 |
{ |
| 237 |
return (int)CallMacOS2(qreply_ptr, qreply_tvect, arg1, arg2); |
| 238 |
} |
| 239 |
typedef void (*flushq_ptr)(queue_t *, int flag); |
| 240 |
static uint32 flushq_tvect = 0; |
| 241 |
static inline void flushq(queue_t *arg1, int arg2) |
| 242 |
{ |
| 243 |
CallMacOS2(flushq_ptr, flushq_tvect, arg1, arg2); |
| 244 |
} |
| 245 |
typedef int (*msgdsize_ptr)(const mblk_t *); |
| 246 |
static uint32 msgdsize_tvect = 0; |
| 247 |
static inline int msgdsize(const mblk_t *arg1) |
| 248 |
{ |
| 249 |
return (int)CallMacOS1(msgdsize_ptr, msgdsize_tvect, arg1); |
| 250 |
} |
| 251 |
typedef void (*otenterint_ptr)(void); |
| 252 |
static uint32 otenterint_tvect = 0; |
| 253 |
void OTEnterInterrupt(void) |
| 254 |
{ |
| 255 |
CallMacOS(otenterint_ptr, otenterint_tvect); |
| 256 |
} |
| 257 |
typedef void (*otleaveint_ptr)(void); |
| 258 |
static uint32 otleaveint_tvect = 0; |
| 259 |
void OTLeaveInterrupt(void) |
| 260 |
{ |
| 261 |
CallMacOS(otleaveint_ptr, otleaveint_tvect); |
| 262 |
} |
| 263 |
typedef int (*mi_open_comm_ptr)(DLPIStream **mi_opp_orig, size_t size, queue_t *q, void *dev, int flag, int sflag, void *credp); |
| 264 |
static uint32 mi_open_comm_tvect = 0; |
| 265 |
static inline int mi_open_comm(DLPIStream **arg1, size_t arg2, queue_t *arg3, void *arg4, int arg5, int arg6, void *arg7) |
| 266 |
{ |
| 267 |
return (int)CallMacOS7(mi_open_comm_ptr, mi_open_comm_tvect, arg1, arg2, arg3, arg4, arg5, arg6, arg7); |
| 268 |
} |
| 269 |
typedef int (*mi_close_comm_ptr)(DLPIStream **mi_opp_orig, queue_t *q); |
| 270 |
static uint32 mi_close_comm_tvect = 0; |
| 271 |
static inline int mi_close_comm(DLPIStream **arg1, queue_t *arg2) |
| 272 |
{ |
| 273 |
return (int)CallMacOS2(mi_close_comm_ptr, mi_close_comm_tvect, arg1, arg2); |
| 274 |
} |
| 275 |
typedef DLPIStream *(*mi_next_ptr_ptr)(DLPIStream *); |
| 276 |
static uint32 mi_next_ptr_tvect = 0; |
| 277 |
static inline DLPIStream *mi_next_ptr(DLPIStream *arg1) |
| 278 |
{ |
| 279 |
return (DLPIStream *)CallMacOS1(mi_next_ptr_ptr, mi_next_ptr_tvect, arg1); |
| 280 |
} |
| 281 |
|
| 282 |
|
| 283 |
// Prototypes |
| 284 |
static void ether_ioctl(DLPIStream *the_stream, queue_t* q, mblk_t* mp); |
| 285 |
static void ether_flush(queue_t* q, mblk_t* mp); |
| 286 |
static mblk_t *build_tx_packet_header(DLPIStream *the_stream, mblk_t *mp, bool fast_path); |
| 287 |
static void transmit_packet(mblk_t *mp); |
| 288 |
static void DLPI_error_ack(DLPIStream *the_stream, queue_t *q, mblk_t *ack_mp, uint32 prim, uint32 err, uint32 uerr); |
| 289 |
static void DLPI_ok_ack(DLPIStream *the_stream, queue_t *q, mblk_t *ack_mp, uint32 prim); |
| 290 |
static void DLPI_info(DLPIStream *the_stream, queue_t *q, mblk_t *mp); |
| 291 |
static void DLPI_phys_addr(DLPIStream *the_stream, queue_t *q, mblk_t *mp); |
| 292 |
static void DLPI_bind(DLPIStream *the_stream, queue_t *q, mblk_t *mp); |
| 293 |
static void DLPI_unbind(DLPIStream *the_stream, queue_t *q, mblk_t *mp); |
| 294 |
static void DLPI_subs_bind(DLPIStream *the_stream, queue_t *q, mblk_t *mp); |
| 295 |
static void DLPI_subs_unbind(DLPIStream *the_stream, queue_t *q, mblk_t *mp); |
| 296 |
static void DLPI_enable_multi(DLPIStream *the_stream, queue_t *q, mblk_t *mp); |
| 297 |
static void DLPI_disable_multi(DLPIStream *the_stream, queue_t *q, mblk_t *mp); |
| 298 |
static void DLPI_unit_data(DLPIStream *the_stream, queue_t *q, mblk_t *mp); |
| 299 |
|
| 300 |
|
| 301 |
/* |
| 302 |
* Initialize ethernet stream module |
| 303 |
*/ |
| 304 |
|
| 305 |
uint8 InitStreamModule(void *theID) |
| 306 |
{ |
| 307 |
D(bug("InitStreamModule\n")); |
| 308 |
|
| 309 |
// Don't re-open if already open |
| 310 |
if (ether_driver_opened) |
| 311 |
return true; |
| 312 |
ether_driver_opened = false; |
| 313 |
|
| 314 |
// Import functions from OTKernelLib |
| 315 |
allocb_tvect = (uint32)FindLibSymbol("\013OTKernelLib", "\006allocb"); |
| 316 |
D(bug("allocb TVECT at %08lx\n", allocb_tvect)); |
| 317 |
if (allocb_tvect == 0) |
| 318 |
return false; |
| 319 |
freeb_tvect = (uint32)FindLibSymbol("\013OTKernelLib", "\005freeb"); |
| 320 |
D(bug("freeb TVECT at %08lx\n", freeb_tvect)); |
| 321 |
if (freeb_tvect == 0) |
| 322 |
return false; |
| 323 |
freemsg_tvect = (uint32)FindLibSymbol("\013OTKernelLib", "\007freemsg"); |
| 324 |
D(bug("freemsg TVECT at %08lx\n", freemsg_tvect)); |
| 325 |
if (freemsg_tvect == 0) |
| 326 |
return false; |
| 327 |
copyb_tvect = (uint32)FindLibSymbol("\013OTKernelLib", "\005copyb"); |
| 328 |
D(bug("copyb TVECT at %08lx\n", copyb_tvect)); |
| 329 |
if (copyb_tvect == 0) |
| 330 |
return false; |
| 331 |
dupmsg_tvect = (uint32)FindLibSymbol("\013OTKernelLib", "\006dupmsg"); |
| 332 |
D(bug("dupmsg TVECT at %08lx\n", dupmsg_tvect)); |
| 333 |
if (dupmsg_tvect == 0) |
| 334 |
return false; |
| 335 |
getq_tvect = (uint32)FindLibSymbol("\013OTKernelLib", "\004getq"); |
| 336 |
D(bug("getq TVECT at %08lx\n", getq_tvect)); |
| 337 |
if (getq_tvect == 0) |
| 338 |
return false; |
| 339 |
putq_tvect = (uint32)FindLibSymbol("\013OTKernelLib", "\004putq"); |
| 340 |
D(bug("putq TVECT at %08lx\n", putq_tvect)); |
| 341 |
if (putq_tvect == 0) |
| 342 |
return false; |
| 343 |
putnext_tvect = (uint32)FindLibSymbol("\013OTKernelLib", "\007putnext"); |
| 344 |
D(bug("putnext TVECT at %08lx\n", putnext_tvect)); |
| 345 |
if (putnext_tvect == 0) |
| 346 |
return false; |
| 347 |
putnextctl1_tvect = (uint32)FindLibSymbol("\013OTKernelLib", "\013putnextctl1"); |
| 348 |
D(bug("putnextctl1 TVECT at %08lx\n", putnextctl1_tvect)); |
| 349 |
if (putnextctl1_tvect == 0) |
| 350 |
return false; |
| 351 |
canputnext_tvect = (uint32)FindLibSymbol("\013OTKernelLib", "\012canputnext"); |
| 352 |
D(bug("canputnext TVECT at %08lx\n", canputnext_tvect)); |
| 353 |
if (canputnext_tvect == 0) |
| 354 |
return false; |
| 355 |
qreply_tvect = (uint32)FindLibSymbol("\013OTKernelLib", "\006qreply"); |
| 356 |
D(bug("qreply TVECT at %08lx\n", qreply_tvect)); |
| 357 |
if (qreply_tvect == 0) |
| 358 |
return false; |
| 359 |
flushq_tvect = (uint32)FindLibSymbol("\013OTKernelLib", "\006flushq"); |
| 360 |
D(bug("flushq TVECT at %08lx\n", flushq_tvect)); |
| 361 |
if (flushq_tvect == 0) |
| 362 |
return false; |
| 363 |
msgdsize_tvect = (uint32)FindLibSymbol("\013OTKernelLib", "\010msgdsize"); |
| 364 |
D(bug("msgdsize TVECT at %08lx\n", msgdsize_tvect)); |
| 365 |
if (msgdsize_tvect == 0) |
| 366 |
return false; |
| 367 |
otenterint_tvect = (uint32)FindLibSymbol("\017OTKernelUtilLib", "\020OTEnterInterrupt"); |
| 368 |
D(bug("OTEnterInterrupt TVECT at %08lx\n", otenterint_tvect)); |
| 369 |
if (otenterint_tvect == 0) |
| 370 |
return false; |
| 371 |
otleaveint_tvect = (uint32)FindLibSymbol("\017OTKernelUtilLib", "\020OTLeaveInterrupt"); |
| 372 |
D(bug("OTLeaveInterrupt TVECT at %08lx\n", otleaveint_tvect)); |
| 373 |
if (otleaveint_tvect == 0) |
| 374 |
return false; |
| 375 |
mi_open_comm_tvect = (uint32)FindLibSymbol("\013OTKernelLib", "\014mi_open_comm"); |
| 376 |
D(bug("mi_open_comm TVECT at %08lx\n", mi_open_comm_tvect)); |
| 377 |
if (mi_open_comm_tvect == 0) |
| 378 |
return false; |
| 379 |
mi_close_comm_tvect = (uint32)FindLibSymbol("\013OTKernelLib", "\015mi_close_comm"); |
| 380 |
D(bug("mi_close_comm TVECT at %08lx\n", mi_close_comm_tvect)); |
| 381 |
if (mi_close_comm_tvect == 0) |
| 382 |
return false; |
| 383 |
mi_next_ptr_tvect = (uint32)FindLibSymbol("\013OTKernelLib", "\013mi_next_ptr"); |
| 384 |
D(bug("mi_next_ptr TVECT at %08lx\n", mi_next_ptr_tvect)); |
| 385 |
if (mi_next_ptr_tvect == 0) |
| 386 |
return false; |
| 387 |
|
| 388 |
// Initialize stream list (which might be leftover) |
| 389 |
dlpi_stream_list = NULL; |
| 390 |
|
| 391 |
// Ask add-on for ethernet hardware address |
| 392 |
AO_get_ethernet_address(hardware_address); |
| 393 |
|
| 394 |
// Yes, we're open |
| 395 |
ether_driver_opened = true; |
| 396 |
return true; |
| 397 |
} |
| 398 |
|
| 399 |
|
| 400 |
/* |
| 401 |
* Terminate ethernet stream module |
| 402 |
*/ |
| 403 |
|
| 404 |
void TerminateStreamModule(void) |
| 405 |
{ |
| 406 |
D(bug("TerminateStreamModule\n")); |
| 407 |
|
| 408 |
// This happens sometimes. I don't know why. |
| 409 |
if (dlpi_stream_list != NULL) |
| 410 |
printf("FATAL: TerminateStreamModule() called, but streams still open\n"); |
| 411 |
|
| 412 |
// Sorry, we're closed |
| 413 |
ether_driver_opened = false; |
| 414 |
} |
| 415 |
|
| 416 |
|
| 417 |
/* |
| 418 |
* Open new stream |
| 419 |
*/ |
| 420 |
|
| 421 |
int ether_open(queue_t *rdq, void *dev, int flag, int sflag, void *creds) |
| 422 |
{ |
| 423 |
D(bug("ether_open(%p,%p,%d,%d,%p)\n", rdq, dev, flag, sflag, creds)); |
| 424 |
|
| 425 |
// Return if driver was closed |
| 426 |
if (!ether_driver_opened) { |
| 427 |
printf("FATAL: ether_open(): Ethernet driver not opened\n"); |
| 428 |
return MAC_ENXIO; |
| 429 |
} |
| 430 |
|
| 431 |
// If we're being reopened, just return |
| 432 |
if (rdq->q_ptr != NULL) |
| 433 |
return 0; |
| 434 |
|
| 435 |
// Allocate DLPIStream structure |
| 436 |
int err = mi_open_comm(&dlpi_stream_list, sizeof(DLPIStream), rdq, dev, flag, sflag, creds); |
| 437 |
if (err) |
| 438 |
return err; |
| 439 |
DLPIStream *the_stream = (DLPIStream *)rdq->q_ptr; |
| 440 |
the_stream->rdq = rdq; |
| 441 |
the_stream->dlpi_state = DL_UNBOUND; |
| 442 |
the_stream->flags = 0; |
| 443 |
the_stream->dlsap = 0; |
| 444 |
the_stream->framing_8022 = false; |
| 445 |
the_stream->multicast_list = NULL; |
| 446 |
return 0; |
| 447 |
} |
| 448 |
|
| 449 |
|
| 450 |
/* |
| 451 |
* Close stream |
| 452 |
*/ |
| 453 |
|
| 454 |
int ether_close(queue_t *rdq, int flag, void *creds) |
| 455 |
{ |
| 456 |
D(bug("ether_close(%p,%d,%p)\n", rdq, flag, creds)); |
| 457 |
|
| 458 |
// Return if driver was closed |
| 459 |
if (!ether_driver_opened) { |
| 460 |
printf("FATAL: ether_close(): Ethernet driver not opened\n"); |
| 461 |
return MAC_ENXIO; |
| 462 |
} |
| 463 |
|
| 464 |
// Get stream |
| 465 |
DLPIStream *the_stream = (DLPIStream *)rdq->q_ptr; |
| 466 |
|
| 467 |
// Don't close if never opened |
| 468 |
if (the_stream == NULL) |
| 469 |
return 0; |
| 470 |
|
| 471 |
// Disable all registered multicast addresses |
| 472 |
while (the_stream->multicast_list) { |
| 473 |
AO_disable_multicast(the_stream->multicast_list->addr); |
| 474 |
the_stream->RemoveMulticast(the_stream->multicast_list->addr); |
| 475 |
} |
| 476 |
the_stream->multicast_list = NULL; |
| 477 |
|
| 478 |
// Delete the DLPIStream |
| 479 |
return mi_close_comm(&dlpi_stream_list, rdq); |
| 480 |
} |
| 481 |
|
| 482 |
|
| 483 |
/* |
| 484 |
* Put something on the write queue |
| 485 |
*/ |
| 486 |
|
| 487 |
int ether_wput(queue_t *q, mblk_t *mp) |
| 488 |
{ |
| 489 |
D(bug("ether_wput(%p,%p)\n", q, mp)); |
| 490 |
|
| 491 |
// Return if driver was closed |
| 492 |
if (!ether_driver_opened) { |
| 493 |
printf("FATAL: ether_wput(): Ethernet driver not opened\n"); |
| 494 |
return MAC_ENXIO; |
| 495 |
} |
| 496 |
|
| 497 |
// Get stream |
| 498 |
DLPIStream *the_stream = (DLPIStream *)q->q_ptr; |
| 499 |
if (the_stream == NULL) |
| 500 |
return MAC_ENXIO; |
| 501 |
|
| 502 |
D(bug(" db_type %d\n", mp->b_datap->db_type)); |
| 503 |
switch (mp->b_datap->db_type) { |
| 504 |
|
| 505 |
case M_DATA: |
| 506 |
// Transmit raw packet |
| 507 |
D(bug(" raw packet\n")); |
| 508 |
num_tx_raw_packets++; |
| 509 |
transmit_packet(mp); |
| 510 |
break; |
| 511 |
|
| 512 |
case M_PROTO: |
| 513 |
case M_PCPROTO: { |
| 514 |
union DL_primitives *dlp = (union DL_primitives *)mp->b_rptr; |
| 515 |
uint32 prim = dlp->dl_primitive; |
| 516 |
D(bug(" dl_primitive %d\n", prim)); |
| 517 |
switch (prim) { |
| 518 |
case DL_UNITDATA_REQ: |
| 519 |
// Transmit normal packet |
| 520 |
num_tx_normal_packets++; |
| 521 |
DLPI_unit_data(the_stream, q, mp); |
| 522 |
break; |
| 523 |
|
| 524 |
case DL_INFO_REQ: |
| 525 |
DLPI_info(the_stream, q, mp); |
| 526 |
break; |
| 527 |
|
| 528 |
case DL_PHYS_ADDR_REQ: |
| 529 |
DLPI_phys_addr(the_stream, q, mp); |
| 530 |
break; |
| 531 |
|
| 532 |
case DL_BIND_REQ: |
| 533 |
DLPI_bind(the_stream, q, mp); |
| 534 |
break; |
| 535 |
|
| 536 |
case DL_UNBIND_REQ: |
| 537 |
DLPI_unbind(the_stream, q, mp); |
| 538 |
break; |
| 539 |
|
| 540 |
case DL_SUBS_BIND_REQ: |
| 541 |
DLPI_subs_bind(the_stream, q, mp); |
| 542 |
break; |
| 543 |
|
| 544 |
case DL_SUBS_UNBIND_REQ: |
| 545 |
DLPI_subs_unbind(the_stream, q, mp); |
| 546 |
break; |
| 547 |
|
| 548 |
case DL_ENABMULTI_REQ: |
| 549 |
DLPI_enable_multi(the_stream, q, mp); |
| 550 |
break; |
| 551 |
|
| 552 |
case DL_DISABMULTI_REQ: |
| 553 |
DLPI_disable_multi(the_stream, q, mp); |
| 554 |
break; |
| 555 |
|
| 556 |
default: |
| 557 |
D(bug("WARNING: ether_wsrv(): Unknown primitive\n")); |
| 558 |
DLPI_error_ack(the_stream, q, mp, prim, DL_NOTSUPPORTED, 0); |
| 559 |
break; |
| 560 |
} |
| 561 |
break; |
| 562 |
} |
| 563 |
|
| 564 |
case M_IOCTL: |
| 565 |
ether_ioctl(the_stream, q, mp); |
| 566 |
break; |
| 567 |
|
| 568 |
case M_FLUSH: |
| 569 |
ether_flush(q, mp); |
| 570 |
break; |
| 571 |
|
| 572 |
default: |
| 573 |
D(bug("WARNING: ether_wput(): Unknown message type\n")); |
| 574 |
freemsg(mp); |
| 575 |
break; |
| 576 |
} |
| 577 |
num_wput++; |
| 578 |
return 0; |
| 579 |
} |
| 580 |
|
| 581 |
|
| 582 |
/* |
| 583 |
* Dequeue and process messages from the read queue |
| 584 |
*/ |
| 585 |
|
| 586 |
int ether_rsrv(queue_t *q) |
| 587 |
{ |
| 588 |
mblk_t *mp; |
| 589 |
while ((mp = getq(q)) != NULL) { |
| 590 |
if (canputnext(q)) |
| 591 |
putnext(q, mp); |
| 592 |
else { |
| 593 |
freemsg(mp); |
| 594 |
flushq(q, FLUSHDATA); |
| 595 |
break; |
| 596 |
} |
| 597 |
} |
| 598 |
return 0; |
| 599 |
} |
| 600 |
|
| 601 |
|
| 602 |
/* |
| 603 |
* Handle ioctl calls |
| 604 |
*/ |
| 605 |
|
| 606 |
static void ether_ioctl(DLPIStream *the_stream, queue_t *q, mblk_t *mp) |
| 607 |
{ |
| 608 |
struct iocblk *ioc = (struct iocblk *)mp->b_rptr; |
| 609 |
D(bug(" ether_ioctl(%p,%p) cmd %d\n", q, mp, ioc->ioc_cmd)); |
| 610 |
|
| 611 |
switch (ioc->ioc_cmd) { |
| 612 |
|
| 613 |
case I_OTSetFramingType: { // Toggles what the general info primitive returns for dl_mac_type in dl_info_ack_t structure |
| 614 |
mblk_t *info_mp = mp->b_cont; |
| 615 |
if (info_mp == NULL || ((info_mp->b_wptr - info_mp->b_rptr) != sizeof(uint32))) { |
| 616 |
ioc->ioc_error = MAC_EINVAL; |
| 617 |
goto ioctl_error; |
| 618 |
} |
| 619 |
uint32 framing_type = *(uint32 *)info_mp->b_rptr; |
| 620 |
D(bug(" I_OTSetFramingType type %d\n", framing_type)); |
| 621 |
if (framing_type != kOTGetFramingValue) |
| 622 |
the_stream->framing_8022 = (framing_type == kOTFraming8022); |
| 623 |
mp->b_cont = NULL; |
| 624 |
freemsg(info_mp); |
| 625 |
if (the_stream->framing_8022) |
| 626 |
ioc->ioc_rval = kOTFraming8022; |
| 627 |
else |
| 628 |
ioc->ioc_rval = kOTFramingEthernet; |
| 629 |
goto ioctl_ok; |
| 630 |
} |
| 631 |
|
| 632 |
case DL_IOC_HDR_INFO: { // Special Mentat call, for fast transmits |
| 633 |
D(bug(" DL_IOC_HDR_INFO\n")); |
| 634 |
mblk_t *info_mp = mp->b_cont; |
| 635 |
|
| 636 |
// Copy DL_UNITDATA_REQ block |
| 637 |
mblk_t *unitdata_mp = copyb(info_mp); |
| 638 |
if (unitdata_mp == NULL) { |
| 639 |
ioc->ioc_error = MAC_ENOMEM; |
| 640 |
goto ioctl_error; |
| 641 |
} |
| 642 |
unitdata_mp->b_datap->db_type = M_PROTO; |
| 643 |
|
| 644 |
// Construct header (converts DL_UNITDATA_REQ -> M_DATA) |
| 645 |
mblk_t *header_mp = build_tx_packet_header(the_stream, unitdata_mp, true); |
| 646 |
|
| 647 |
if (header_mp == NULL) { |
| 648 |
// Could not allocate a message block large enough |
| 649 |
ioc->ioc_error = MAC_ENOMEM; |
| 650 |
goto ioctl_error; |
| 651 |
} |
| 652 |
|
| 653 |
// Attach header block at the end |
| 654 |
mp->b_cont->b_cont = header_mp; |
| 655 |
the_stream->flags |= kFastPathMode; |
| 656 |
goto ioctl_ok; |
| 657 |
} |
| 658 |
|
| 659 |
case I_OTSetRawMode: { |
| 660 |
mblk_t *info_mp = mp->b_cont; |
| 661 |
dl_recv_control_t *dlrc; |
| 662 |
if (info_mp == NULL || ((info_mp->b_wptr - info_mp->b_rptr) != sizeof(dlrc->dl_primitive))) { |
| 663 |
ioc->ioc_error = MAC_EINVAL; |
| 664 |
goto ioctl_error; |
| 665 |
} |
| 666 |
dlrc = (dl_recv_control_t *)info_mp->b_rptr; |
| 667 |
D(bug(" I_OTSetRawMode primitive %d\n", dlrc->dl_primitive)); |
| 668 |
ioc->ioc_error = MAC_EINVAL; |
| 669 |
goto ioctl_error; |
| 670 |
} |
| 671 |
|
| 672 |
default: |
| 673 |
D(bug("WARNING: Unknown ether_ioctl() call\n")); |
| 674 |
ioc->ioc_error = MAC_EINVAL; |
| 675 |
goto ioctl_error; |
| 676 |
} |
| 677 |
|
| 678 |
ioctl_ok: |
| 679 |
ioc->ioc_count = 0; |
| 680 |
for (mblk_t *mp1 = mp; (mp1 = mp1->b_cont) != NULL;) |
| 681 |
ioc->ioc_count += mp1->b_wptr - mp1->b_rptr; |
| 682 |
ioc->ioc_error = 0; |
| 683 |
mp->b_datap->db_type = M_IOCACK; |
| 684 |
qreply(q, mp); |
| 685 |
return; |
| 686 |
|
| 687 |
ioctl_error: |
| 688 |
mp->b_datap->db_type = M_IOCNAK; |
| 689 |
qreply(q, mp); |
| 690 |
return; |
| 691 |
} |
| 692 |
|
| 693 |
|
| 694 |
/* |
| 695 |
* Flush call, send it up to the read side of the stream |
| 696 |
*/ |
| 697 |
|
| 698 |
static void ether_flush(queue_t* q, mblk_t* mp) |
| 699 |
{ |
| 700 |
D(bug(" ether_flush(%p,%p)\n", q, mp)); |
| 701 |
|
| 702 |
uint8 *rptr = mp->b_rptr; |
| 703 |
if (*rptr & FLUSHW) |
| 704 |
flushq(q, FLUSHALL); |
| 705 |
if (*rptr & FLUSHR) { |
| 706 |
flushq(RD(q), FLUSHALL); |
| 707 |
*rptr &= ~FLUSHW; |
| 708 |
qreply(q, mp); |
| 709 |
} else |
| 710 |
freemsg(mp); |
| 711 |
} |
| 712 |
|
| 713 |
|
| 714 |
/* |
| 715 |
* Classify packet into the different types of protocols |
| 716 |
*/ |
| 717 |
|
| 718 |
static uint16 classify_packet_type(uint16 primarySAP, uint16 secondarySAP) |
| 719 |
{ |
| 720 |
if (primarySAP >= kMinDIXSAP) |
| 721 |
return kPktDIX; |
| 722 |
|
| 723 |
if ((primarySAP == kIPXSAP) && (secondarySAP == kIPXSAP)) |
| 724 |
return kPktIPX; |
| 725 |
|
| 726 |
if (primarySAP == kSNAPSAP) |
| 727 |
return kPkt8022SNAP; |
| 728 |
|
| 729 |
if (primarySAP <= k8022GlobalSAP) |
| 730 |
return kPkt8022SAP; |
| 731 |
|
| 732 |
return kPktUnknown; |
| 733 |
} |
| 734 |
|
| 735 |
|
| 736 |
/* |
| 737 |
* Check if the address is a multicast, broadcast or standard address |
| 738 |
*/ |
| 739 |
|
| 740 |
static int32 get_address_type(uint8 *addr) |
| 741 |
{ |
| 742 |
if (addr[0] & 1) { // Multicast/broadcast flag |
| 743 |
if (OTIs48BitBroadcastAddress(addr)) |
| 744 |
return keaBroadcast; |
| 745 |
else |
| 746 |
return keaMulticast; |
| 747 |
} else |
| 748 |
return keaStandardAddress; |
| 749 |
} |
| 750 |
|
| 751 |
|
| 752 |
/* |
| 753 |
* Reuse a message block, make room for more data |
| 754 |
*/ |
| 755 |
|
| 756 |
static mblk_t *reuse_message_block(mblk_t *mp, uint16 needed_size) |
| 757 |
{ |
| 758 |
mblk_t *nmp; |
| 759 |
|
| 760 |
if ((mp->b_datap->db_ref == 1) && ((mp->b_datap->db_lim - mp->b_datap->db_base) >= needed_size)) { |
| 761 |
mp->b_datap->db_type = M_DATA; |
| 762 |
mp->b_rptr = mp->b_datap->db_base; |
| 763 |
mp->b_wptr = mp->b_datap->db_base + needed_size; |
| 764 |
} else { |
| 765 |
nmp = mp->b_cont; // Grab the M_DATA blocks |
| 766 |
mp->b_cont = NULL; // Detach the M_(PC)PROTO |
| 767 |
freemsg(mp); // Free the M_(PC)PROTO |
| 768 |
mp = nmp; // Point to the M_DATA blocks |
| 769 |
|
| 770 |
// Try to get space on the first M_DATA block |
| 771 |
if (mp && (mp->b_datap->db_ref == 1) && ((mp->b_rptr - mp->b_datap->db_base) >= needed_size)) |
| 772 |
mp->b_rptr -= needed_size; |
| 773 |
else { |
| 774 |
// Try to allocate a new message |
| 775 |
if ((nmp = allocb(needed_size, BPRI_HI)) == NULL) { |
| 776 |
// Could not get a new message block so lets forget about the message altogether |
| 777 |
freemsg(mp); // Free the original M_DATA portion of the message |
| 778 |
mp = NULL; // Indicates the reuse failed |
| 779 |
} else { |
| 780 |
nmp->b_cont = mp; // Attach the new message block as the head |
| 781 |
nmp->b_wptr += needed_size; |
| 782 |
mp = nmp; |
| 783 |
} |
| 784 |
} |
| 785 |
} |
| 786 |
|
| 787 |
return mp; |
| 788 |
} |
| 789 |
|
| 790 |
|
| 791 |
/* |
| 792 |
* Built header for packet to be transmitted (convert DL_UNITDATA_REQ -> M_DATA) |
| 793 |
* The passed-in message has the header info in the first message block and the data |
| 794 |
* in the following blocks |
| 795 |
*/ |
| 796 |
|
| 797 |
static mblk_t *build_tx_packet_header(DLPIStream *the_stream, mblk_t *mp, bool fast_path) |
| 798 |
{ |
| 799 |
// Only handle unit_data requests |
| 800 |
dl_unitdata_req_t *req = (dl_unitdata_req_t *)mp->b_rptr; |
| 801 |
if (req->dl_primitive != DL_UNITDATA_REQ) { |
| 802 |
freemsg(mp); |
| 803 |
return NULL; |
| 804 |
} |
| 805 |
|
| 806 |
// Extract destination address and its length |
| 807 |
uint8 *destAddrOrig = ((uint8 *)req) + req->dl_dest_addr_offset; |
| 808 |
uint32 destAddrLen = req->dl_dest_addr_length; |
| 809 |
uint8 ctrl = 0x03; |
| 810 |
|
| 811 |
// Extract DLSAP |
| 812 |
uint16 dlsap; |
| 813 |
switch (destAddrLen) { |
| 814 |
case kEnetPhysicalAddressLength: |
| 815 |
dlsap = the_stream->dlsap; |
| 816 |
break; |
| 817 |
case kEnetAndSAPAddressLength: |
| 818 |
dlsap = *(uint16 *)(destAddrOrig + kEnetPhysicalAddressLength); |
| 819 |
break; |
| 820 |
case kEnetPhysicalAddressLength + k8022DLSAPLength + k8022SNAPLength: // SNAP SAP |
| 821 |
dlsap = *(uint16 *)(destAddrOrig + kEnetPhysicalAddressLength); |
| 822 |
break; |
| 823 |
default: |
| 824 |
dlsap = the_stream->dlsap; |
| 825 |
break; |
| 826 |
} |
| 827 |
|
| 828 |
// Extract data size (excluding header info) and packet type |
| 829 |
uint16 datasize = msgdsize(mp); |
| 830 |
uint16 packetType = classify_packet_type(the_stream->dlsap, dlsap); |
| 831 |
|
| 832 |
// Calculate header size and protocol type/size field |
| 833 |
uint16 hdrsize, proto; |
| 834 |
switch (packetType) { |
| 835 |
case kPktDIX: |
| 836 |
hdrsize = kEnetPacketHeaderLength; |
| 837 |
proto = dlsap; |
| 838 |
break; |
| 839 |
case kPkt8022SAP: |
| 840 |
hdrsize = kEnetPacketHeaderLength + k8022BasicHeaderLength; |
| 841 |
if (fast_path) |
| 842 |
proto = 0; |
| 843 |
else |
| 844 |
proto = datasize + k8022BasicHeaderLength; |
| 845 |
break; |
| 846 |
case kPkt8022SNAP: |
| 847 |
hdrsize = kEnetPacketHeaderLength + k8022SNAPHeaderLength; |
| 848 |
if (fast_path) |
| 849 |
proto = 0; |
| 850 |
else |
| 851 |
proto = datasize + k8022SNAPHeaderLength; |
| 852 |
break; |
| 853 |
case kPktIPX: |
| 854 |
hdrsize = kEnetPacketHeaderLength; |
| 855 |
if (fast_path) |
| 856 |
proto = 0; |
| 857 |
else |
| 858 |
proto = datasize; |
| 859 |
break; |
| 860 |
default: |
| 861 |
hdrsize = kEnetPacketHeaderLength; |
| 862 |
proto = dlsap; |
| 863 |
break; |
| 864 |
} |
| 865 |
|
| 866 |
// We need to copy the dest address info in the message before we can reuse it |
| 867 |
uint8 destAddrCopy[kMaxBoundAddrLength]; |
| 868 |
memcpy(destAddrCopy, destAddrOrig, destAddrLen); |
| 869 |
|
| 870 |
// Resize header info in message block |
| 871 |
if ((mp = reuse_message_block(mp, hdrsize)) == NULL) |
| 872 |
return NULL; |
| 873 |
struct T8022FullPacketHeader *packetHeader = (struct T8022FullPacketHeader *)mp->b_rptr; |
| 874 |
|
| 875 |
// Set protocol type/size field |
| 876 |
packetHeader->fEnetPart.fProto = proto; |
| 877 |
|
| 878 |
// Set destination ethernet address |
| 879 |
OTCopy48BitAddress(destAddrCopy, packetHeader->fEnetPart.fDestAddr); |
| 880 |
|
| 881 |
// Set other header fields |
| 882 |
switch (packetType) { |
| 883 |
case kPkt8022SAP: |
| 884 |
packetHeader->f8022Part.fDSAP = (uint8)dlsap; |
| 885 |
packetHeader->f8022Part.fSSAP = (uint8)the_stream->dlsap; |
| 886 |
packetHeader->f8022Part.fCtrl = ctrl; |
| 887 |
break; |
| 888 |
case kPkt8022SNAP: { |
| 889 |
uint8 *snapStart; |
| 890 |
packetHeader->f8022Part.fDSAP = (uint8)dlsap; |
| 891 |
packetHeader->f8022Part.fSSAP = (uint8)the_stream->dlsap; |
| 892 |
packetHeader->f8022Part.fCtrl = ctrl; |
| 893 |
if (destAddrLen >= kEnetAndSAPAddressLength + k8022SNAPLength) |
| 894 |
snapStart = destAddrCopy + kEnetAndSAPAddressLength; |
| 895 |
else |
| 896 |
snapStart = the_stream->snap; |
| 897 |
OTCopy8022SNAP(snapStart, packetHeader->f8022Part.fSNAP); |
| 898 |
break; |
| 899 |
} |
| 900 |
} |
| 901 |
|
| 902 |
// Return updated message |
| 903 |
return mp; |
| 904 |
} |
| 905 |
|
| 906 |
|
| 907 |
/* |
| 908 |
* Transmit packet |
| 909 |
*/ |
| 910 |
|
| 911 |
static void transmit_packet(mblk_t *mp) |
| 912 |
{ |
| 913 |
EnetPacketHeader *enetHeader = (EnetPacketHeader *)mp->b_rptr; |
| 914 |
|
| 915 |
// Fill in length in 802.3 packets |
| 916 |
if (enetHeader->fProto == 0) |
| 917 |
enetHeader->fProto = msgdsize(mp) - sizeof(EnetPacketHeader); |
| 918 |
|
| 919 |
// Fill in ethernet source address |
| 920 |
OTCopy48BitAddress(hardware_address, enetHeader->fSourceAddr); |
| 921 |
|
| 922 |
// Tell add-on to transmit packet |
| 923 |
AO_transmit_packet(mp); |
| 924 |
freemsg(mp); |
| 925 |
} |
| 926 |
|
| 927 |
|
| 928 |
/* |
| 929 |
* Handle incoming packet (one stream), construct DL_UNITDATA_IND message |
| 930 |
*/ |
| 931 |
|
| 932 |
static void handle_received_packet(DLPIStream *the_stream, mblk_t *mp, uint16 packet_type, int32 dest_addr_type) |
| 933 |
{ |
| 934 |
// Find address and header length |
| 935 |
uint32 addr_len; |
| 936 |
uint32 header_len; |
| 937 |
switch (packet_type) { |
| 938 |
case kPkt8022SAP: |
| 939 |
addr_len = kEnetAndSAPAddressLength; |
| 940 |
header_len = kEnetPacketHeaderLength + k8022BasicHeaderLength; |
| 941 |
break; |
| 942 |
case kPkt8022SNAP: |
| 943 |
addr_len = kEnetAndSAPAddressLength + k8022SNAPLength; |
| 944 |
header_len = kEnetPacketHeaderLength + k8022SNAPHeaderLength; |
| 945 |
break; |
| 946 |
default: // DIX and IPX |
| 947 |
addr_len = kEnetAndSAPAddressLength; |
| 948 |
header_len = kEnetPacketHeaderLength; |
| 949 |
break; |
| 950 |
} |
| 951 |
|
| 952 |
// In Fast Path mode, don't send DL_UNITDATA_IND messages for unicast packets |
| 953 |
if ((the_stream->flags & kFastPathMode) && dest_addr_type == keaStandardAddress) { |
| 954 |
mp->b_rptr += header_len; |
| 955 |
num_rx_fastpath++; |
| 956 |
putq(the_stream->rdq, mp); |
| 957 |
return; |
| 958 |
} |
| 959 |
|
| 960 |
// Allocate the dl_unitdata_ind_t message |
| 961 |
mblk_t *nmp; |
| 962 |
if ((nmp = allocb(sizeof(dl_unitdata_ind_t) + 2*addr_len, BPRI_HI)) == NULL) { |
| 963 |
freemsg(mp); |
| 964 |
num_rx_no_unitdata_mem++; |
| 965 |
return; |
| 966 |
} |
| 967 |
|
| 968 |
// Set message type |
| 969 |
nmp->b_datap->db_type = M_PROTO; |
| 970 |
dl_unitdata_ind_t *ind = (dl_unitdata_ind_t*)nmp->b_rptr; |
| 971 |
ind->dl_primitive = DL_UNITDATA_IND; |
| 972 |
nmp->b_wptr += (sizeof(dl_unitdata_ind_t) + 2*addr_len); |
| 973 |
|
| 974 |
// Link M_DATA block |
| 975 |
nmp->b_cont = mp; |
| 976 |
|
| 977 |
// Set address fields |
| 978 |
ind->dl_dest_addr_length = addr_len; |
| 979 |
ind->dl_dest_addr_offset = sizeof(dl_unitdata_ind_t); |
| 980 |
ind->dl_src_addr_length = addr_len; |
| 981 |
ind->dl_src_addr_offset = sizeof(dl_unitdata_ind_t) + addr_len; |
| 982 |
|
| 983 |
// Set address type |
| 984 |
ind->dl_group_address = dest_addr_type; |
| 985 |
|
| 986 |
// Set address fields |
| 987 |
T8022FullPacketHeader *packetHeader = (T8022FullPacketHeader *)mp->b_rptr; |
| 988 |
T8022AddressStruct *destAddr = ((T8022AddressStruct*)(nmp->b_rptr + ind->dl_dest_addr_offset)); |
| 989 |
T8022AddressStruct *srcAddr = ((T8022AddressStruct*)(nmp->b_rptr + ind->dl_src_addr_offset)); |
| 990 |
|
| 991 |
OTCopy48BitAddress(packetHeader->fEnetPart.fDestAddr, destAddr->fHWAddr); |
| 992 |
OTCopy48BitAddress(packetHeader->fEnetPart.fSourceAddr, srcAddr->fHWAddr); |
| 993 |
|
| 994 |
destAddr->fSAP = packetHeader->f8022Part.fDSAP; |
| 995 |
srcAddr->fSAP = packetHeader->f8022Part.fSSAP; |
| 996 |
|
| 997 |
if (packet_type == kPkt8022SNAP) { |
| 998 |
OTCopy8022SNAP(packetHeader->f8022Part.fSNAP, destAddr->fSNAP); |
| 999 |
OTCopy8022SNAP(packetHeader->f8022Part.fSNAP, srcAddr->fSNAP); |
| 1000 |
} |
| 1001 |
|
| 1002 |
// "Hide" the ethernet and protocol header(s) |
| 1003 |
mp->b_rptr += header_len; |
| 1004 |
|
| 1005 |
// Pass message up the stream |
| 1006 |
num_unitdata_ind++; |
| 1007 |
putq(the_stream->rdq, nmp); |
| 1008 |
return; |
| 1009 |
} |
| 1010 |
|
| 1011 |
|
| 1012 |
/* |
| 1013 |
* Packet received, distribute it to the streams that want it |
| 1014 |
*/ |
| 1015 |
|
| 1016 |
void ether_packet_received(mblk_t *mp) |
| 1017 |
{ |
| 1018 |
// Extract address and types |
| 1019 |
EnetPacketHeader *pkt = (EnetPacketHeader *)mp->b_rptr; |
| 1020 |
T8022FullPacketHeader *fullpkt = (T8022FullPacketHeader *)pkt; |
| 1021 |
uint16 sourceSAP, destSAP; |
| 1022 |
destSAP = fullpkt->fEnetPart.fProto; |
| 1023 |
if (destSAP >= kMinDIXSAP) { |
| 1024 |
// Classic ethernet |
| 1025 |
sourceSAP = destSAP; |
| 1026 |
} else { |
| 1027 |
destSAP = fullpkt->f8022Part.fDSAP; |
| 1028 |
sourceSAP = fullpkt->f8022Part.fSSAP; |
| 1029 |
} |
| 1030 |
uint16 packetType = classify_packet_type(sourceSAP, destSAP); |
| 1031 |
int32 destAddressType = get_address_type(pkt->fDestAddr); |
| 1032 |
|
| 1033 |
// Look which streams want it |
| 1034 |
DLPIStream *the_stream, *found_stream = NULL; |
| 1035 |
uint16 found_packetType = 0; |
| 1036 |
int32 found_destAddressType = 0; |
| 1037 |
for (the_stream = dlpi_stream_list; the_stream != NULL; the_stream = mi_next_ptr(the_stream)) { |
| 1038 |
|
| 1039 |
// Don't send to unbound streams |
| 1040 |
if (the_stream->dlpi_state == DL_UNBOUND) |
| 1041 |
continue; |
| 1042 |
|
| 1043 |
// Does this stream want all 802.2 packets? |
| 1044 |
if ((the_stream->flags & kAcceptAll8022Packets) && (destSAP <= 0xff)) |
| 1045 |
goto type_found; |
| 1046 |
|
| 1047 |
// No, check SAP/SNAP |
| 1048 |
if (destSAP == the_stream->dlsap) { |
| 1049 |
if (the_stream->flags & kSnapStream) { |
| 1050 |
// Check SNAPs if necessary |
| 1051 |
uint8 sum = fullpkt->f8022Part.fSNAP[0] ^ the_stream->snap[0]; |
| 1052 |
sum |= fullpkt->f8022Part.fSNAP[1] ^ the_stream->snap[1]; |
| 1053 |
sum |= fullpkt->f8022Part.fSNAP[2] ^ the_stream->snap[2]; |
| 1054 |
sum |= fullpkt->f8022Part.fSNAP[3] ^ the_stream->snap[3]; |
| 1055 |
sum |= fullpkt->f8022Part.fSNAP[4] ^ the_stream->snap[4]; |
| 1056 |
if (sum == 0) |
| 1057 |
goto type_found; |
| 1058 |
} else { |
| 1059 |
// No SNAP, found a match since saps match |
| 1060 |
goto type_found; |
| 1061 |
} |
| 1062 |
} else { |
| 1063 |
// Check for an 802.3 Group/Global (odd) |
| 1064 |
if (((packetType == kPkt8022SAP) || (packetType == kPkt8022SNAP)) && (destSAP & 1) && the_stream->TestGroupSAP(destSAP)) |
| 1065 |
goto type_found; |
| 1066 |
} |
| 1067 |
|
| 1068 |
// No stream for this SAP/SNAP found |
| 1069 |
continue; |
| 1070 |
|
| 1071 |
type_found: |
| 1072 |
// If it's a multicast packet, it must be in the stream's multicast list |
| 1073 |
if ((destAddressType == keaMulticast) && (the_stream->flags & kAcceptMulticasts) && (!the_stream->IsMulticastRegistered(pkt->fDestAddr))) |
| 1074 |
continue; |
| 1075 |
|
| 1076 |
// Send packet to stream |
| 1077 |
// found_stream keeps a pointer to the previously found stream, so that only the last |
| 1078 |
// stream gets the original message, the other ones get duplicates |
| 1079 |
if (found_stream) |
| 1080 |
handle_received_packet(found_stream, dupmsg(mp), found_packetType, found_destAddressType); |
| 1081 |
found_stream = the_stream; |
| 1082 |
found_packetType = packetType; |
| 1083 |
found_destAddressType = destAddressType; |
| 1084 |
} |
| 1085 |
|
| 1086 |
// Send original message to last found stream |
| 1087 |
if (found_stream) |
| 1088 |
handle_received_packet(found_stream, mp, found_packetType, found_destAddressType); |
| 1089 |
else { |
| 1090 |
freemsg(mp); // Nobody wants it *snief* |
| 1091 |
num_rx_dropped++; |
| 1092 |
} |
| 1093 |
} |
| 1094 |
|
| 1095 |
|
| 1096 |
/* |
| 1097 |
* Build and send an error acknowledge |
| 1098 |
*/ |
| 1099 |
|
| 1100 |
static void DLPI_error_ack(DLPIStream *the_stream, queue_t *q, mblk_t *ack_mp, uint32 prim, uint32 err, uint32 uerr) |
| 1101 |
{ |
| 1102 |
D(bug(" DLPI_error_ack(%p,%p) prim %d, err %d, uerr %d\n", the_stream, ack_mp, prim, err, uerr)); |
| 1103 |
num_error_acks++; |
| 1104 |
|
| 1105 |
if (ack_mp != NULL) |
| 1106 |
freemsg(ack_mp); |
| 1107 |
if ((ack_mp = allocb(sizeof(dl_error_ack_t), BPRI_HI)) == NULL) |
| 1108 |
return; |
| 1109 |
|
| 1110 |
ack_mp->b_datap->db_type = M_PCPROTO; |
| 1111 |
dl_error_ack_t *errp = (dl_error_ack_t *)ack_mp->b_wptr; |
| 1112 |
errp->dl_primitive = DL_ERROR_ACK; |
| 1113 |
errp->dl_error_primitive = prim; |
| 1114 |
errp->dl_errno = err; |
| 1115 |
errp->dl_unix_errno = uerr; |
| 1116 |
ack_mp->b_wptr += sizeof(dl_error_ack_t); |
| 1117 |
qreply(q, ack_mp); |
| 1118 |
} |
| 1119 |
|
| 1120 |
|
| 1121 |
/* |
| 1122 |
* Build and send an OK acknowledge |
| 1123 |
*/ |
| 1124 |
|
| 1125 |
static void DLPI_ok_ack(DLPIStream *the_stream, queue_t *q, mblk_t *ack_mp, uint32 prim) |
| 1126 |
{ |
| 1127 |
if (ack_mp->b_datap->db_ref != 1) { |
| 1128 |
// Message already in use, create a new one |
| 1129 |
freemsg(ack_mp); |
| 1130 |
if ((ack_mp = allocb(sizeof(dl_error_ack_t), BPRI_HI)) == NULL) |
| 1131 |
return; |
| 1132 |
} else { |
| 1133 |
// Message free |
| 1134 |
if (ack_mp->b_cont != NULL) { |
| 1135 |
freemsg(ack_mp->b_cont); |
| 1136 |
ack_mp->b_cont = NULL; |
| 1137 |
} |
| 1138 |
} |
| 1139 |
|
| 1140 |
ack_mp->b_datap->db_type = M_PCPROTO; |
| 1141 |
dl_ok_ack_t *ackp = (dl_ok_ack_t *)ack_mp->b_rptr; |
| 1142 |
ackp->dl_primitive = DL_OK_ACK; |
| 1143 |
ackp->dl_correct_primitive = prim; |
| 1144 |
ack_mp->b_wptr = ack_mp->b_rptr + sizeof(dl_ok_ack_t); |
| 1145 |
qreply(q, ack_mp); |
| 1146 |
} |
| 1147 |
|
| 1148 |
|
| 1149 |
/* |
| 1150 |
* Handle DL_INFO_REQ (report general information) |
| 1151 |
*/ |
| 1152 |
|
| 1153 |
static void DLPI_info(DLPIStream *the_stream, queue_t *q, mblk_t *mp) |
| 1154 |
{ |
| 1155 |
D(bug(" DLPI_info(%p)\n", the_stream)); |
| 1156 |
uint32 saplen = 0; |
| 1157 |
uint32 addrlen = kEnetPhysicalAddressLength; |
| 1158 |
uint32 bcastlen = kEnetPhysicalAddressLength; |
| 1159 |
uint32 hdrlen = kEnetPacketHeaderLength; |
| 1160 |
|
| 1161 |
// Calculate header length |
| 1162 |
if (the_stream->dlpi_state != DL_UNBOUND) { |
| 1163 |
saplen = (the_stream->flags & kSnapStream) ? k8022DLSAPLength+k8022SNAPLength : k8022DLSAPLength; |
| 1164 |
if (the_stream->dlsap == kSNAPSAP) |
| 1165 |
hdrlen = kEnetPacketHeaderLength + k8022SNAPHeaderLength; // SNAP address |
| 1166 |
else if ((the_stream->dlsap <= kMax8022SAP) || (the_stream->dlsap == kIPXSAP)) |
| 1167 |
hdrlen = kEnetPacketHeaderLength + k8022BasicHeaderLength; // SAP or IPX |
| 1168 |
else |
| 1169 |
hdrlen = kEnetPacketHeaderLength; // Basic Ethernet |
| 1170 |
} |
| 1171 |
|
| 1172 |
// Allocate message block for reply |
| 1173 |
mblk_t *ack_mp; |
| 1174 |
if ((ack_mp = allocb(sizeof(dl_info_ack_t) + addrlen + saplen + bcastlen, BPRI_LO)) == NULL) { |
| 1175 |
DLPI_error_ack(the_stream, q, mp, DL_INFO_REQ, DL_SYSERR, MAC_ENOMEM); |
| 1176 |
return; |
| 1177 |
} |
| 1178 |
|
| 1179 |
// Set up message type |
| 1180 |
ack_mp->b_datap->db_type = M_PCPROTO; |
| 1181 |
dl_info_ack_t *ackp = (dl_info_ack_t *)ack_mp->b_rptr; |
| 1182 |
ackp->dl_primitive = DL_INFO_ACK; |
| 1183 |
|
| 1184 |
// Info/version fields |
| 1185 |
ackp->dl_service_mode = DL_CLDLS; |
| 1186 |
ackp->dl_provider_style = DL_STYLE1; |
| 1187 |
ackp->dl_version = DL_VERSION_2; |
| 1188 |
ackp->dl_current_state = the_stream->dlpi_state; |
| 1189 |
ackp->dl_mac_type = the_stream->framing_8022 ? DL_CSMACD : DL_ETHER; |
| 1190 |
ackp->dl_reserved = 0; |
| 1191 |
ackp->dl_qos_length = 0; |
| 1192 |
ackp->dl_qos_offset = (uint32)DL_UNKNOWN; |
| 1193 |
ackp->dl_qos_range_length = 0; |
| 1194 |
ackp->dl_qos_range_offset = (uint32)DL_UNKNOWN; |
| 1195 |
ackp->dl_growth = 0; |
| 1196 |
ackp->dl_min_sdu = 1; |
| 1197 |
ackp->dl_max_sdu = kEnetTSDU - hdrlen; |
| 1198 |
|
| 1199 |
// Address fields |
| 1200 |
ackp->dl_sap_length = -saplen; // Negative to indicate sap follows physical address |
| 1201 |
ackp->dl_addr_length = addrlen + saplen; |
| 1202 |
ackp->dl_addr_offset = sizeof(dl_info_ack_t); |
| 1203 |
T8022AddressStruct *boundAddr = ((T8022AddressStruct *)(ack_mp->b_rptr + ackp->dl_addr_offset)); |
| 1204 |
OTCopy48BitAddress(hardware_address, boundAddr->fHWAddr); |
| 1205 |
if (saplen) { |
| 1206 |
boundAddr->fSAP = the_stream->dlsap; |
| 1207 |
if (the_stream->flags & kSnapStream) |
| 1208 |
OTCopy8022SNAP(the_stream->snap, boundAddr->fSNAP); |
| 1209 |
} |
| 1210 |
ackp->dl_brdcst_addr_length = bcastlen; |
| 1211 |
ackp->dl_brdcst_addr_offset = sizeof(dl_info_ack_t) + addrlen + saplen; |
| 1212 |
OTSet48BitBroadcastAddress(ack_mp->b_rptr + ackp->dl_brdcst_addr_offset); |
| 1213 |
|
| 1214 |
// Advance write pointer |
| 1215 |
ack_mp->b_wptr += sizeof(dl_info_ack_t) + addrlen + saplen + bcastlen; |
| 1216 |
|
| 1217 |
// Free request |
| 1218 |
freemsg(mp); |
| 1219 |
|
| 1220 |
// Send reply |
| 1221 |
qreply(q, ack_mp); |
| 1222 |
return; |
| 1223 |
} |
| 1224 |
|
| 1225 |
|
| 1226 |
/* |
| 1227 |
* Handle DL_PHYS_ADDR_REQ (report physical address) |
| 1228 |
*/ |
| 1229 |
|
| 1230 |
static void DLPI_phys_addr(DLPIStream *the_stream, queue_t *q, mblk_t *mp) |
| 1231 |
{ |
| 1232 |
D(bug(" DLPI_phys_addr(%p,%p)\n", the_stream, mp)); |
| 1233 |
dl_phys_addr_req_t *req = (dl_phys_addr_req_t *)mp->b_rptr; |
| 1234 |
|
| 1235 |
// Allocate message block for reply |
| 1236 |
mblk_t *ack_mp; |
| 1237 |
if ((ack_mp = allocb(sizeof(dl_phys_addr_ack_t) + kEnetPhysicalAddressLength, BPRI_HI)) == NULL) { |
| 1238 |
DLPI_error_ack(the_stream, q, mp, DL_PHYS_ADDR_REQ, DL_SYSERR, MAC_ENOMEM); |
| 1239 |
return; |
| 1240 |
} |
| 1241 |
|
| 1242 |
// Set up message type |
| 1243 |
ack_mp->b_datap->db_type = M_PCPROTO; |
| 1244 |
dl_phys_addr_ack_t *ackp = (dl_phys_addr_ack_t *)ack_mp->b_wptr; |
| 1245 |
ackp->dl_primitive = DL_PHYS_ADDR_ACK; |
| 1246 |
|
| 1247 |
// Fill in address |
| 1248 |
ackp->dl_addr_length = kEnetPhysicalAddressLength; |
| 1249 |
ackp->dl_addr_offset = sizeof(dl_phys_addr_ack_t); |
| 1250 |
ack_mp->b_wptr += sizeof(dl_phys_addr_ack_t) + kEnetPhysicalAddressLength; |
| 1251 |
if (req->dl_addr_type == DL_CURR_PHYS_ADDR || req->dl_addr_type == DL_FACT_PHYS_ADDR) |
| 1252 |
OTCopy48BitAddress(hardware_address, ack_mp->b_rptr + ackp->dl_addr_offset); |
| 1253 |
else { |
| 1254 |
DLPI_error_ack(the_stream, q, mp, DL_PHYS_ADDR_REQ, DL_BADPRIM, 0); |
| 1255 |
return; |
| 1256 |
} |
| 1257 |
|
| 1258 |
// Free request |
| 1259 |
freemsg(mp); |
| 1260 |
|
| 1261 |
// Send reply |
| 1262 |
qreply(q, ack_mp); |
| 1263 |
return; |
| 1264 |
} |
| 1265 |
|
| 1266 |
|
| 1267 |
/* |
| 1268 |
* Handle DL_BIND_REQ (bind a stream) |
| 1269 |
*/ |
| 1270 |
|
| 1271 |
static void DLPI_bind(DLPIStream *the_stream, queue_t *q, mblk_t *mp) |
| 1272 |
{ |
| 1273 |
dl_bind_req_t *req = (dl_bind_req_t *)mp->b_rptr; |
| 1274 |
uint32 sap = req->dl_sap; |
| 1275 |
D(bug(" DLPI_bind(%p,%p) SAP %04x\n", the_stream, mp, sap)); |
| 1276 |
|
| 1277 |
// Stream must be unbound |
| 1278 |
if (the_stream->dlpi_state != DL_UNBOUND) { |
| 1279 |
DLPI_error_ack(the_stream, q, mp, DL_BIND_REQ, DL_OUTSTATE, 0); |
| 1280 |
return; |
| 1281 |
} |
| 1282 |
|
| 1283 |
// We only support connectionless data link services |
| 1284 |
if (req->dl_service_mode != DL_CLDLS || req->dl_max_conind != 0) { |
| 1285 |
DLPI_error_ack(the_stream, q, mp, DL_BIND_REQ, DL_UNSUPPORTED, 0); |
| 1286 |
return; |
| 1287 |
} |
| 1288 |
|
| 1289 |
// Don't bind to 802.2 group saps, can't check 802.2 global sap (0xFF) |
| 1290 |
// because it looks like IPX |
| 1291 |
if ((sap <= kMax8022SAP) && (sap & 1)) { |
| 1292 |
DLPI_error_ack(the_stream, q, mp, DL_BIND_REQ, DL_BADADDR, 0); |
| 1293 |
return; |
| 1294 |
} |
| 1295 |
|
| 1296 |
if (classify_packet_type(sap, sap) == kPktUnknown) { |
| 1297 |
DLPI_error_ack(the_stream, q, mp, DL_BIND_REQ, DL_BADADDR, 0); |
| 1298 |
return; |
| 1299 |
} |
| 1300 |
|
| 1301 |
// Allocate message block for reply |
| 1302 |
mblk_t *ack_mp; |
| 1303 |
if ((ack_mp = allocb(sizeof(dl_bind_ack_t) + kEnetAndSAPAddressLength, BPRI_HI)) == NULL) { |
| 1304 |
DLPI_error_ack(the_stream, q, mp, DL_BIND_REQ, DL_SYSERR, MAC_ENOMEM); |
| 1305 |
return; |
| 1306 |
} |
| 1307 |
|
| 1308 |
// Set up message type |
| 1309 |
ack_mp->b_datap->db_type = M_PCPROTO; |
| 1310 |
dl_bind_ack_t *ackp = (dl_bind_ack_t *)ack_mp->b_rptr; |
| 1311 |
ackp->dl_primitive = DL_BIND_ACK; |
| 1312 |
|
| 1313 |
// Fill in other fields |
| 1314 |
ackp->dl_sap = sap; |
| 1315 |
ackp->dl_addr_length = kEnetAndSAPAddressLength; |
| 1316 |
ackp->dl_addr_offset = sizeof(dl_bind_ack_t); |
| 1317 |
ackp->dl_max_conind = 0; |
| 1318 |
ackp->dl_xidtest_flg = 0; |
| 1319 |
|
| 1320 |
T8022AddressStruct *addrInfo = (T8022AddressStruct *)(ack_mp->b_rptr + sizeof(dl_bind_ack_t)); |
| 1321 |
OTCopy48BitAddress(hardware_address, addrInfo->fHWAddr); |
| 1322 |
addrInfo->fSAP = sap; |
| 1323 |
|
| 1324 |
// Must move b_wptr past the address info data |
| 1325 |
ack_mp->b_wptr = ack_mp->b_rptr + sizeof(dl_bind_ack_t) + kEnetAndSAPAddressLength; |
| 1326 |
|
| 1327 |
// Set group SAP if necessary |
| 1328 |
the_stream->ClearAllGroupSAPs(); |
| 1329 |
if (sap <= kMax8022SAP) |
| 1330 |
the_stream->SetGroupSAP(k8022GlobalSAP); |
| 1331 |
|
| 1332 |
// The stream is now bound and idle |
| 1333 |
the_stream->dlpi_state = DL_IDLE; |
| 1334 |
the_stream->dlsap = sap; |
| 1335 |
the_stream->flags &= ~kSnapStream; |
| 1336 |
|
| 1337 |
// Free request |
| 1338 |
freemsg(mp); |
| 1339 |
|
| 1340 |
// Send reply |
| 1341 |
qreply(q, ack_mp); |
| 1342 |
return; |
| 1343 |
} |
| 1344 |
|
| 1345 |
|
| 1346 |
/* |
| 1347 |
* Handle DL_UNBIND_REQ (unbind a stream) |
| 1348 |
*/ |
| 1349 |
|
| 1350 |
static void DLPI_unbind(DLPIStream *the_stream, queue_t *q, mblk_t *mp) |
| 1351 |
{ |
| 1352 |
D(bug(" DLPI_unbind(%p,%p)\n", the_stream, mp)); |
| 1353 |
|
| 1354 |
// Stream must be bound and idle |
| 1355 |
if (the_stream->dlpi_state != DL_IDLE) { |
| 1356 |
DLPI_error_ack(the_stream, q, mp, DL_UNBIND_REQ, DL_OUTSTATE, 0); |
| 1357 |
return; |
| 1358 |
} |
| 1359 |
|
| 1360 |
// Stream is now unbound |
| 1361 |
the_stream->dlpi_state = DL_UNBOUND; |
| 1362 |
the_stream->dlsap = 0; |
| 1363 |
|
| 1364 |
// Flush all pending outbound messages |
| 1365 |
flushq(q, FLUSHDATA); |
| 1366 |
|
| 1367 |
// Flush all inbound messages pending on the stream |
| 1368 |
flushq(RD(q), FLUSHDATA); |
| 1369 |
putnextctl1(RD(q), M_FLUSH, FLUSHRW); |
| 1370 |
|
| 1371 |
// Send reply |
| 1372 |
DLPI_ok_ack(the_stream, q, mp, DL_UNBIND_REQ); |
| 1373 |
return; |
| 1374 |
} |
| 1375 |
|
| 1376 |
|
| 1377 |
/* |
| 1378 |
* Handle DL_SUBS_BIND_REQ (register 802.2 SAP group addresses and SNAPs) |
| 1379 |
*/ |
| 1380 |
|
| 1381 |
static void DLPI_subs_bind(DLPIStream *the_stream, queue_t *q, mblk_t *mp) |
| 1382 |
{ |
| 1383 |
dl_subs_bind_req_t *req = (dl_subs_bind_req_t *)mp->b_rptr; |
| 1384 |
uint8 *sap = ((uint8 *)req) + req->dl_subs_sap_offset; |
| 1385 |
int32 length = req->dl_subs_sap_length; |
| 1386 |
uint16 theSap = *((uint16 *)sap); |
| 1387 |
int32 error = 0; |
| 1388 |
D(bug(" DLPI_subs_bind(%p,%p) SAP %02x%02x%02x%02x%02x\n", the_stream, mp, sap[0], sap[1], sap[2], sap[3], sap[4])); |
| 1389 |
|
| 1390 |
// Stream must be idle |
| 1391 |
if (the_stream->dlpi_state != DL_IDLE) { |
| 1392 |
DLPI_error_ack(the_stream, q, mp, DL_SUBS_BIND_REQ, DL_OUTSTATE, 0); |
| 1393 |
return; |
| 1394 |
} |
| 1395 |
|
| 1396 |
// Check if address is valid |
| 1397 |
switch (req->dl_subs_bind_class) { |
| 1398 |
case DL_PEER_BIND: // Bind a group address |
| 1399 |
if (the_stream->dlsap <= kMax8022SAP) { |
| 1400 |
if ((theSap & 1) && (length == sizeof(theSap))) |
| 1401 |
the_stream->SetGroupSAP(theSap); |
| 1402 |
else |
| 1403 |
if (theSap == 0x0000) // special case to receive all 802.2 packets |
| 1404 |
the_stream->flags |= kAcceptAll8022Packets; |
| 1405 |
else |
| 1406 |
error = DL_BADADDR; |
| 1407 |
} else |
| 1408 |
error = DL_UNSUPPORTED; |
| 1409 |
break; |
| 1410 |
|
| 1411 |
case DL_HIERARCHICAL_BIND: // Bind an additional SNAP |
| 1412 |
if (the_stream->dlsap == kSNAPSAP) { |
| 1413 |
if (the_stream->flags & kSnapStream) |
| 1414 |
error = DL_TOOMANY; // only one SNAP binding allowed |
| 1415 |
else { |
| 1416 |
OTCopy8022SNAP(sap, the_stream->snap); |
| 1417 |
the_stream->flags |= kSnapStream; |
| 1418 |
} |
| 1419 |
} else |
| 1420 |
error = DL_BADADDR; |
| 1421 |
break; |
| 1422 |
|
| 1423 |
default: |
| 1424 |
error = DL_UNSUPPORTED; |
| 1425 |
break; |
| 1426 |
} |
| 1427 |
if (error) { |
| 1428 |
DLPI_error_ack(the_stream, q, mp, DL_SUBS_BIND_REQ, error, 0); |
| 1429 |
return; |
| 1430 |
} |
| 1431 |
|
| 1432 |
// Allocate message block for reply |
| 1433 |
mblk_t *ack_mp; |
| 1434 |
if ((ack_mp = allocb(sizeof(dl_subs_bind_ack_t) + length, BPRI_HI)) == NULL) { |
| 1435 |
DLPI_error_ack(the_stream, q, mp, DL_SUBS_BIND_REQ, DL_SYSERR, MAC_ENOMEM); |
| 1436 |
return; |
| 1437 |
} |
| 1438 |
|
| 1439 |
// Set up message type |
| 1440 |
ack_mp->b_datap->db_type = M_PCPROTO; |
| 1441 |
dl_subs_bind_ack_t *ackp = (dl_subs_bind_ack_t *)ack_mp->b_wptr; |
| 1442 |
memset(ackp, 0, sizeof(dl_subs_bind_ack_t) + length); |
| 1443 |
ackp->dl_primitive = DL_SUBS_BIND_ACK; |
| 1444 |
|
| 1445 |
// Fill in other fields |
| 1446 |
ackp->dl_subs_sap_length = length; |
| 1447 |
ackp->dl_subs_sap_offset = length ? sizeof(dl_subs_bind_ack_t) : 0; |
| 1448 |
ack_mp->b_wptr += sizeof(dl_subs_bind_ack_t); |
| 1449 |
if (length) |
| 1450 |
memcpy(ack_mp->b_wptr, sap, length); |
| 1451 |
ack_mp->b_wptr += length; |
| 1452 |
|
| 1453 |
// Free request |
| 1454 |
freemsg(mp); |
| 1455 |
|
| 1456 |
// Send reply |
| 1457 |
qreply(q, ack_mp); |
| 1458 |
return; |
| 1459 |
} |
| 1460 |
|
| 1461 |
|
| 1462 |
/* |
| 1463 |
* Handle DL_SUBS_UNBIND_REQ (unregister 802.2 SAP group addresses and snaps) |
| 1464 |
*/ |
| 1465 |
|
| 1466 |
static void DLPI_subs_unbind(DLPIStream *the_stream, queue_t *q, mblk_t *mp) |
| 1467 |
{ |
| 1468 |
dl_subs_unbind_req_t *req = (dl_subs_unbind_req_t *)mp->b_rptr; |
| 1469 |
uint8 *sap = ((uint8 *)req) + req->dl_subs_sap_offset; |
| 1470 |
int32 length = req->dl_subs_sap_length; |
| 1471 |
int32 error = 0; |
| 1472 |
D(bug(" DLPI_subs_unbind(%p,%p) SAP %02x%02x%02x%02x%02x\n", the_stream, mp, sap[0], sap[1], sap[2], sap[3], sap[4])); |
| 1473 |
|
| 1474 |
// Stream must be idle |
| 1475 |
if (the_stream->dlpi_state != DL_IDLE) { |
| 1476 |
DLPI_error_ack(the_stream, q, mp, DL_SUBS_UNBIND_REQ, DL_OUTSTATE, 0); |
| 1477 |
return; |
| 1478 |
} |
| 1479 |
|
| 1480 |
// Check if we are unbinding from an address we are bound to |
| 1481 |
if (length == k8022SAPLength) { |
| 1482 |
if ((*sap & 1) && (*sap != kIPXSAP)) { |
| 1483 |
if (the_stream->dlsap <= kMax8022SAP) |
| 1484 |
the_stream->ClearGroupSAP(*sap); |
| 1485 |
else |
| 1486 |
error = DL_UNSUPPORTED; |
| 1487 |
} else |
| 1488 |
error = DL_BADADDR; |
| 1489 |
} else if (length == k8022SNAPLength) { |
| 1490 |
if (the_stream->dlsap == kSNAPSAP) { |
| 1491 |
if (the_stream->flags & kSnapStream) { |
| 1492 |
if (memcmp(the_stream->snap, sap, length) != 0) |
| 1493 |
error = DL_BADADDR; |
| 1494 |
} else |
| 1495 |
error = DL_BADADDR; |
| 1496 |
} else |
| 1497 |
error = DL_UNSUPPORTED; |
| 1498 |
} |
| 1499 |
if (error) { |
| 1500 |
DLPI_error_ack(the_stream, q, mp, DL_SUBS_UNBIND_REQ, error, 0); |
| 1501 |
return; |
| 1502 |
} |
| 1503 |
|
| 1504 |
// Stream is no longer bound to SNAP |
| 1505 |
the_stream->flags &= ~kSnapStream; |
| 1506 |
|
| 1507 |
// Send reply |
| 1508 |
DLPI_ok_ack(the_stream, q, mp, DL_SUBS_UNBIND_REQ); |
| 1509 |
return; |
| 1510 |
} |
| 1511 |
|
| 1512 |
|
| 1513 |
/* |
| 1514 |
* Handles DL_ENABMULTI_REQ (enable multicast address) |
| 1515 |
*/ |
| 1516 |
|
| 1517 |
static void DLPI_enable_multi(DLPIStream *the_stream, queue_t *q, mblk_t *mp) |
| 1518 |
{ |
| 1519 |
dl_enabmulti_req_t* req = (dl_enabmulti_req_t*)mp->b_rptr; |
| 1520 |
uint8 *reqaddr = (uint8 *)(mp->b_rptr + req->dl_addr_offset); |
| 1521 |
D(bug(" DLPI_enable_multi(%p,%p) addr %02x%02x%02x%02x%02x%02x\n", the_stream, mp, reqaddr[0], reqaddr[1], reqaddr[2], reqaddr[3], reqaddr[4], reqaddr[5])); |
| 1522 |
|
| 1523 |
// Address must be a multicast address |
| 1524 |
if (get_address_type(reqaddr) != keaMulticast) { |
| 1525 |
DLPI_error_ack(the_stream, q, mp, DL_ENABMULTI_REQ, DL_BADADDR, 0); |
| 1526 |
return; |
| 1527 |
} |
| 1528 |
|
| 1529 |
// Address already in multicast list? |
| 1530 |
if (the_stream->IsMulticastRegistered(reqaddr)) { |
| 1531 |
DLPI_error_ack(the_stream, q, mp, DL_ENABMULTI_REQ, DL_BADADDR, 0); |
| 1532 |
return; |
| 1533 |
} |
| 1534 |
|
| 1535 |
// Tell add-on to enable multicast address |
| 1536 |
AO_enable_multicast(reqaddr); |
| 1537 |
|
| 1538 |
// Add new address to multicast list |
| 1539 |
uint8 *addr = new uint8[kEnetPhysicalAddressLength]; |
| 1540 |
OTCopy48BitAddress(reqaddr, addr); |
| 1541 |
the_stream->AddMulticast(addr); |
| 1542 |
|
| 1543 |
// On receive now check multicast packets |
| 1544 |
the_stream->flags |= kAcceptMulticasts; |
| 1545 |
|
| 1546 |
// Send reply |
| 1547 |
DLPI_ok_ack(the_stream, q, mp, DL_ENABMULTI_REQ); |
| 1548 |
return; |
| 1549 |
} |
| 1550 |
|
| 1551 |
|
| 1552 |
/* |
| 1553 |
* Handles DL_DISABMULTI_REQ (disable multicast address) |
| 1554 |
*/ |
| 1555 |
|
| 1556 |
static void DLPI_disable_multi(DLPIStream *the_stream, queue_t *q, mblk_t *mp) |
| 1557 |
{ |
| 1558 |
dl_disabmulti_req_t *req = (dl_disabmulti_req_t*)mp->b_rptr; |
| 1559 |
uint8 *reqaddr = (uint8 *)(mp->b_rptr + req->dl_addr_offset); |
| 1560 |
D(bug(" DLPI_disable_multi(%p,%p) addr %02x%02x%02x%02x%02x%02x\n", the_stream, mp, reqaddr[0], reqaddr[1], reqaddr[2], reqaddr[3], reqaddr[4], reqaddr[5])); |
| 1561 |
|
| 1562 |
// Address must be a multicast address |
| 1563 |
if (get_address_type(reqaddr) != keaMulticast) { |
| 1564 |
DLPI_error_ack(the_stream, q, mp, DL_DISABMULTI_REQ, DL_BADADDR, 0); |
| 1565 |
return; |
| 1566 |
} |
| 1567 |
|
| 1568 |
// Find address in multicast list |
| 1569 |
uint8 *addr = the_stream->IsMulticastRegistered(reqaddr); |
| 1570 |
if (addr == NULL) { |
| 1571 |
DLPI_error_ack(the_stream, q, mp, DL_DISABMULTI_REQ, DL_BADADDR, 0); |
| 1572 |
return; |
| 1573 |
} |
| 1574 |
|
| 1575 |
// Found, then remove |
| 1576 |
the_stream->RemoveMulticast(addr); |
| 1577 |
delete addr; |
| 1578 |
|
| 1579 |
// Tell add-on to disable multicast address |
| 1580 |
AO_disable_multicast(reqaddr); |
| 1581 |
|
| 1582 |
// No longer check multicast packets if no multicast addresses are registered |
| 1583 |
if (the_stream->multicast_list == NULL) |
| 1584 |
the_stream->flags &= ~kAcceptMulticasts; |
| 1585 |
|
| 1586 |
// Send reply |
| 1587 |
DLPI_ok_ack(the_stream, q, mp, DL_DISABMULTI_REQ); |
| 1588 |
return; |
| 1589 |
} |
| 1590 |
|
| 1591 |
|
| 1592 |
/* |
| 1593 |
* Handle DL_UNITDATA_REQ (transmit packet) |
| 1594 |
*/ |
| 1595 |
|
| 1596 |
static void DLPI_unit_data(DLPIStream *the_stream, queue_t *q, mblk_t *mp) |
| 1597 |
{ |
| 1598 |
D(bug(" DLPI_unit_data(%p,%p)\n", the_stream, mp)); |
| 1599 |
dl_unitdata_req_t *req = (dl_unitdata_req_t *)mp->b_rptr; |
| 1600 |
|
| 1601 |
// Stream must be idle |
| 1602 |
if (the_stream->dlpi_state != DL_IDLE) { |
| 1603 |
|
| 1604 |
// Not idle, send error response |
| 1605 |
dl_uderror_ind_t *errp; |
| 1606 |
mblk_t *bp; |
| 1607 |
|
| 1608 |
int i = sizeof(dl_uderror_ind_t) + req->dl_dest_addr_length; |
| 1609 |
if ((bp = allocb(i, BPRI_HI)) == NULL) { |
| 1610 |
freemsg(mp); |
| 1611 |
return; |
| 1612 |
} |
| 1613 |
bp->b_datap->db_type = M_PROTO; |
| 1614 |
errp = (dl_uderror_ind_t *)bp->b_wptr; |
| 1615 |
errp->dl_primitive = DL_UDERROR_IND; |
| 1616 |
errp->dl_errno = DL_OUTSTATE; |
| 1617 |
errp->dl_unix_errno = 0; |
| 1618 |
errp->dl_dest_addr_length = req->dl_dest_addr_length; |
| 1619 |
errp->dl_dest_addr_offset = sizeof(dl_uderror_ind_t); |
| 1620 |
bp->b_wptr += sizeof(dl_uderror_ind_t); |
| 1621 |
memcpy((uint8 *)bp->b_wptr, ((uint8 *)req) + req->dl_dest_addr_offset, req->dl_dest_addr_length); |
| 1622 |
bp->b_wptr += req->dl_dest_addr_length; |
| 1623 |
qreply(q, bp); |
| 1624 |
|
| 1625 |
freemsg(mp); |
| 1626 |
return; |
| 1627 |
} |
| 1628 |
|
| 1629 |
// Build packet header and transmit packet |
| 1630 |
if ((mp = build_tx_packet_header(the_stream, mp, false)) != NULL) |
| 1631 |
transmit_packet(mp); |
| 1632 |
} |
