developer | 02e6591 | 2023-08-17 16:33:10 +0800 | [diff] [blame] | 1 | /* iotoken.c |
| 2 | * |
| 3 | * IOToken API implementation for the EIP-197 Server with ICE only |
| 4 | * |
| 5 | */ |
| 6 | |
| 7 | /***************************************************************************** |
| 8 | * Copyright (c) 2016-2022 by Rambus, Inc. and/or its subsidiaries. |
| 9 | * |
| 10 | * This program is free software: you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License as published by |
| 12 | * the Free Software Foundation, either version 2 of the License, or |
| 13 | * any later version. |
| 14 | * |
| 15 | * This program is distributed in the hope that it will be useful, |
| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 | * GNU General Public License for more details. |
| 19 | * |
| 20 | * You should have received a copy of the GNU General Public License |
| 21 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 22 | *****************************************************************************/ |
| 23 | |
| 24 | /*---------------------------------------------------------------------------- |
| 25 | * This module implements (provides) the following interface(s): |
| 26 | */ |
| 27 | |
| 28 | // Extended IOToken API |
| 29 | #include "iotoken_ext.h" |
| 30 | |
| 31 | |
| 32 | /*---------------------------------------------------------------------------- |
| 33 | * This module uses (requires) the following interface(s): |
| 34 | */ |
| 35 | |
| 36 | // Default configuration |
| 37 | #include "c_iotoken.h" // IOTOKEN_STRICT_ARGS |
| 38 | |
| 39 | // Driver Framework Basic Definitions API |
| 40 | #include "basic_defs.h" // IDENTIFIER_NOT_USED, bool, uint32_t |
| 41 | |
| 42 | // Firmware packet flow codes |
| 43 | #include "firmware_eip207_api_cmd.h" |
| 44 | |
| 45 | // ZEROINIT |
| 46 | #include "clib.h" |
| 47 | |
| 48 | #include "log.h" |
| 49 | |
| 50 | // Packet buffer access |
| 51 | #include "adapter_pec_pktbuf.h" |
| 52 | |
| 53 | /*---------------------------------------------------------------------------- |
| 54 | * Definitions and macros |
| 55 | */ |
| 56 | |
| 57 | #define IOTOKEN_ARGUMENT_ERROR -1 |
| 58 | #define IOTOKEN_INTERNAL_ERROR -2 |
| 59 | |
| 60 | #ifdef IOTOKEN_STRICT_ARGS |
| 61 | #define IOTOKEN_CHECK_POINTER(_p) \ |
| 62 | if (NULL == (_p)) \ |
| 63 | return IOTOKEN_ARGUMENT_ERROR; |
| 64 | #define IOTOKEN_CHECK_INT_INRANGE(_i, _min, _max) \ |
| 65 | if ((_i) < (_min) || (_i) > (_max)) \ |
| 66 | return IOTOKEN_ARGUMENT_ERROR; |
| 67 | #define IOTOKEN_CHECK_INT_ATLEAST(_i, _min) \ |
| 68 | if ((_i) < (_min)) \ |
| 69 | return IOTOKEN_ARGUMENT_ERROR; |
| 70 | #define IOTOKEN_CHECK_INT_ATMOST(_i, _max) \ |
| 71 | if ((_i) > (_max)) \ |
| 72 | return IOTOKEN_ARGUMENT_ERROR; |
| 73 | #else |
| 74 | /* IOTOKEN_STRICT_ARGS undefined */ |
| 75 | #define IOTOKEN_CHECK_POINTER(_p) |
| 76 | #define IOTOKEN_CHECK_INT_INRANGE(_i, _min, _max) |
| 77 | #define IOTOKEN_CHECK_INT_ATLEAST(_i, _min) |
| 78 | #define IOTOKEN_CHECK_INT_ATMOST(_i, _max) |
| 79 | #endif /*end of IOTOKEN_STRICT_ARGS */ |
| 80 | |
| 81 | // Input Token words offsets |
| 82 | #define IOTOKEN_HDR_IN_WORD_OFFS 0 |
| 83 | #define IOTOKEN_APP_ID_IN_WORD_OFFS 1 |
| 84 | #define IOTOKEN_SA_ADDR_LO_IN_WORD_OFFS 2 |
| 85 | #define IOTOKEN_SA_ADDR_HI_IN_WORD_OFFS 3 |
| 86 | #define IOTOKEN_HW_SERVICES_IN_WORD_OFFS 4 |
| 87 | #define IOTOKEN_NH_OFFSET_IN_WORD_OFFS 5 |
| 88 | #define IOTOKEN_BP_DATA_IN_WORD_OFFS 6 |
| 89 | |
| 90 | // Output Token words offsets |
| 91 | #define IOTOKEN_HDR_OUT_WORD_OFFS 0 |
| 92 | #define IOTOKEN_BP_LEN_OUT_WORD_OFFS 1 |
| 93 | #define IOTOKEN_APP_ID_OUT_WORD_OFFS 2 |
| 94 | #define IOTOKEN_PAD_NH_OUT_WORD_OFFS 3 |
| 95 | #define IOTOKEN_SA_ADDR_LO_OUT_WORD_OFFS 4 |
| 96 | #define IOTOKEN_SA_ADDR_HI_OUT_WORD_OFFS 5 |
| 97 | #define IOTOKEN_NPH_CTX_OUT_WORD_OFFS 6 |
| 98 | #define IOTOKEN_PREV_NH_OFFS_OUT_WORD_OFFS 7 |
| 99 | #define IOTOKEN_BP_DATA_OUT_WORD_OFFS 8 |
| 100 | |
| 101 | #define IOTOKEN_MARK 0xEC00 |
| 102 | |
| 103 | |
| 104 | /*---------------------------------------------------------------------------- |
| 105 | * Local variables |
| 106 | */ |
| 107 | |
| 108 | |
| 109 | /*---------------------------------------------------------------------------- |
| 110 | * IOToken_InWordCount_Get |
| 111 | */ |
| 112 | unsigned int |
| 113 | IOToken_InWordCount_Get(void) |
| 114 | { |
| 115 | return IOTOKEN_IN_WORD_COUNT - 4 + IOTOKEN_BYPASS_WORD_COUNT; |
| 116 | } |
| 117 | |
| 118 | |
| 119 | /*---------------------------------------------------------------------------- |
| 120 | * IOToken_OutWordCount_Get |
| 121 | */ |
| 122 | unsigned int |
| 123 | IOToken_OutWordCount_Get(void) |
| 124 | { |
| 125 | return IOTOKEN_OUT_WORD_COUNT - 4 + IOTOKEN_BYPASS_WORD_COUNT; |
| 126 | } |
| 127 | |
| 128 | |
| 129 | /*---------------------------------------------------------------------------- |
| 130 | * IOToken_Create |
| 131 | */ |
| 132 | int |
| 133 | IOToken_Create( |
| 134 | const IOToken_Input_Dscr_t * const Dscr_p, |
| 135 | uint32_t * Data_p) |
| 136 | { |
| 137 | IOToken_Input_Dscr_Ext_t * DscrExt_p; |
| 138 | #if IOTOKEN_BYPASS_WORD_COUNT > 0 |
| 139 | unsigned int bypass_gap = 0; |
| 140 | #endif |
| 141 | unsigned int i; |
| 142 | |
| 143 | IOTOKEN_CHECK_POINTER(Dscr_p); |
| 144 | IOTOKEN_CHECK_POINTER(Dscr_p->Ext_p); |
| 145 | IOTOKEN_CHECK_POINTER(Data_p); |
| 146 | |
| 147 | DscrExt_p = (IOToken_Input_Dscr_Ext_t *)Dscr_p->Ext_p; |
| 148 | |
| 149 | // Input Token word: EIP-96 Token Header Word |
| 150 | { |
| 151 | i = IOTOKEN_HDR_IN_WORD_OFFS; |
| 152 | |
| 153 | // Set initialization value in the Token Header Word excluding packet |
| 154 | // size field |
| 155 | Data_p[i] = Dscr_p->TknHdrWordInit & ~MASK_16_BITS; |
| 156 | |
| 157 | // Input packet size |
| 158 | Data_p[i] |= Dscr_p->InPacket_ByteCount & MASK_16_BITS; |
| 159 | |
| 160 | if (DscrExt_p->HW_Services == IOTOKEN_CMD_PKT_LAC) |
| 161 | { |
| 162 | // Options, ARC4 pre-fetch |
| 163 | if (DscrExt_p->fARC4Prefetch) |
| 164 | Data_p[i] |= BIT_16; |
| 165 | |
| 166 | Data_p[i] |= BIT_17; // Set token header format to EIP-(1)97 |
| 167 | |
| 168 | Data_p[i] |= BIT_18; // Only 64-bit Context (SA) pointer is supported |
| 169 | |
| 170 | // Enable Context Reuse auto detect if no new SA |
| 171 | if (Dscr_p->Options.fReuseSA) |
| 172 | Data_p[i] |= BIT_21; |
| 173 | } |
| 174 | // Mask size for inbound ESP |
| 175 | if (DscrExt_p->SequenceMaskBitCount != 0) |
| 176 | { |
| 177 | switch(DscrExt_p->SequenceMaskBitCount) |
| 178 | { |
| 179 | case 64: |
| 180 | Data_p[i] |= 0x00200000; |
| 181 | break; |
| 182 | case 128: |
| 183 | Data_p[i] |= 0x00400000; |
| 184 | break; |
| 185 | case 256: |
| 186 | Data_p[i] |= 0x00600000; |
| 187 | break; |
| 188 | case 512: |
| 189 | Data_p[i] |= 0x00800000; |
| 190 | break; |
| 191 | } |
| 192 | } |
| 193 | // Extended options for LIP |
| 194 | if (DscrExt_p->fEncLastDest) |
| 195 | Data_p[i] |= BIT_25; |
| 196 | // Extended options for in-line DTLS packet flow |
| 197 | { |
| 198 | if (DscrExt_p->Options.fCAPWAP) |
| 199 | Data_p[i] |= BIT_26; |
| 200 | |
| 201 | if (DscrExt_p->Options.fInbound) |
| 202 | Data_p[i] |= BIT_27; |
| 203 | |
| 204 | Data_p[i] |= DscrExt_p->Options.ContentType << 28; |
| 205 | } |
| 206 | |
| 207 | Data_p[i] |= IOTOKEN_FLOW_TYPE << 30; // Implemented flow type |
| 208 | } |
| 209 | |
| 210 | // Input Token word: Application ID |
| 211 | { |
| 212 | i = IOTOKEN_APP_ID_IN_WORD_OFFS; |
| 213 | Data_p[i] = (Dscr_p->AppID & MASK_7_BITS) << 9; |
| 214 | Data_p[i] |= (DscrExt_p->AAD_ByteCount & MASK_8_BITS); |
| 215 | if (DscrExt_p->fInline) |
| 216 | Data_p[i] |= (32 + IOTOKEN_BYPASS_WORD_COUNT*4) << 16; |
| 217 | } |
| 218 | |
| 219 | // Input Token word: Context (SA) low 32 bits physical address |
| 220 | { |
| 221 | i = IOTOKEN_SA_ADDR_LO_IN_WORD_OFFS; |
| 222 | Data_p[i] = Dscr_p->SA_PhysAddr.Lo; |
| 223 | } |
| 224 | |
| 225 | // Input Token word: Context (SA) high 32 bits physical address |
| 226 | { |
| 227 | i = IOTOKEN_SA_ADDR_HI_IN_WORD_OFFS; |
| 228 | //if (DscrExt_p->Options.f64bitSA) // Only 64-bit SA address supported |
| 229 | Data_p[i] = Dscr_p->SA_PhysAddr.Hi; |
| 230 | } |
| 231 | |
| 232 | // Input Token word: HW services, e,g, packet flow selection |
| 233 | { |
| 234 | i = IOTOKEN_HW_SERVICES_IN_WORD_OFFS; |
| 235 | Data_p[i] = ((DscrExt_p->HW_Services & MASK_8_BITS) << 24) | |
| 236 | (DscrExt_p->UserDef & MASK_16_BITS); |
| 237 | if (DscrExt_p->fStripPadding != IOTOKEN_PADDING_DEFAULT_ON) |
| 238 | Data_p[i] |= BIT_22; |
| 239 | if (DscrExt_p->fAllowPadding != IOTOKEN_PADDING_DEFAULT_ON) |
| 240 | Data_p[i] |= BIT_23; |
| 241 | } |
| 242 | |
| 243 | // Input Token word: Offset and Next Header |
| 244 | { |
| 245 | i = IOTOKEN_NH_OFFSET_IN_WORD_OFFS; |
| 246 | Data_p[i] = (DscrExt_p->Offset_ByteCount & MASK_8_BITS) << 8; |
| 247 | Data_p[i] |= (DscrExt_p->NextHeader & MASK_8_BITS) << 16; |
| 248 | if (DscrExt_p->fFL) |
| 249 | Data_p[i] |= BIT_24; |
| 250 | if (DscrExt_p->fIPv4Chksum) |
| 251 | Data_p[i] |= BIT_25; |
| 252 | if (DscrExt_p->fL4Chksum) |
| 253 | Data_p[i] |= BIT_26; |
| 254 | if (DscrExt_p->fParseEther) |
| 255 | Data_p[i] |= BIT_27; |
| 256 | if (DscrExt_p->fKeepOuter) |
| 257 | Data_p[i] |= BIT_28; |
| 258 | |
| 259 | } |
| 260 | |
| 261 | if (DscrExt_p->fInline) |
| 262 | { |
| 263 | Data_p[IOTOKEN_BP_DATA_IN_WORD_OFFS]=0; |
| 264 | Data_p[IOTOKEN_BP_DATA_IN_WORD_OFFS+1]=0; |
| 265 | #if IOTOKEN_BYPASS_WORD_COUNT > 0 |
| 266 | bypass_gap = 2; |
| 267 | #endif |
| 268 | } |
| 269 | |
| 270 | #if IOTOKEN_BYPASS_WORD_COUNT > 0 |
| 271 | // Input Token word: Bypass Data |
| 272 | { |
| 273 | unsigned int j; |
| 274 | |
| 275 | if (DscrExt_p->BypassData_p) |
| 276 | { |
| 277 | for (j = 0; j < IOTOKEN_BYPASS_WORD_COUNT; j++) |
| 278 | Data_p[j+IOTOKEN_BP_DATA_IN_WORD_OFFS + bypass_gap] = DscrExt_p->BypassData_p[j]; |
| 279 | } |
| 280 | else |
| 281 | { |
| 282 | for (j = 0; j < IOTOKEN_BYPASS_WORD_COUNT; j++) |
| 283 | Data_p[j+IOTOKEN_BP_DATA_IN_WORD_OFFS + bypass_gap] = 0xf0f0f0f0; |
| 284 | } |
| 285 | i += bypass_gap + j; |
| 286 | } |
| 287 | #endif |
| 288 | |
| 289 | if (i >= IOTOKEN_IN_WORD_COUNT_IL) |
| 290 | return IOTOKEN_INTERNAL_ERROR; |
| 291 | else |
| 292 | return i+1; |
| 293 | } |
| 294 | |
| 295 | |
| 296 | /*---------------------------------------------------------------------------- |
| 297 | * IOToken_Fixup |
| 298 | */ |
| 299 | int |
| 300 | IOToken_Fixup( |
| 301 | uint32_t * const Data_p, |
| 302 | const DMABuf_Handle_t PacketHandle) |
| 303 | { |
| 304 | uint32_t AppendFlags; |
| 305 | if (Data_p == NULL) |
| 306 | return 0; |
| 307 | |
| 308 | AppendFlags = Data_p[IOTOKEN_BP_LEN_OUT_WORD_OFFS] & (BIT_31|BIT_30|BIT_29); |
| 309 | if (AppendFlags != 0) |
| 310 | { |
| 311 | uint8_t AppendData[12]; |
| 312 | uint8_t *Append_p; |
| 313 | unsigned int Offset; |
| 314 | unsigned int PrevNH_Offset; |
| 315 | unsigned int UpdateOffset; |
| 316 | unsigned int AppendLen = 0; |
| 317 | if ((AppendFlags & BIT_31) != 0) |
| 318 | AppendLen+=4; |
| 319 | if ((AppendFlags & BIT_30) != 0) |
| 320 | AppendLen+=4; |
| 321 | if ((AppendFlags & BIT_29) != 0) |
| 322 | AppendLen+=4; |
| 323 | UpdateOffset = Data_p[IOTOKEN_HDR_OUT_WORD_OFFS] & MASK_17_BITS; |
| 324 | UpdateOffset = 4*((UpdateOffset + 3)/4); // Align to word boundary. |
| 325 | Offset = Data_p[IOTOKEN_PAD_NH_OUT_WORD_OFFS] >> 16 & MASK_8_BITS; |
| 326 | // Get first byte of header |
| 327 | Append_p = Adapter_PEC_PktData_Get(PacketHandle, AppendData, UpdateOffset, AppendLen); |
| 328 | if (AppendFlags == (BIT_31|BIT_30)) |
| 329 | { // IPv6 header update, NH plus length |
| 330 | PrevNH_Offset = Data_p[IOTOKEN_PREV_NH_OFFS_OUT_WORD_OFFS] & MASK_16_BITS; |
| 331 | Adapter_PEC_PktByte_Put(PacketHandle, PrevNH_Offset, Append_p[4]); |
| 332 | Adapter_PEC_PktByte_Put(PacketHandle, Offset + 4, Append_p[0]); |
| 333 | Adapter_PEC_PktByte_Put(PacketHandle, Offset + 5, Append_p[1]); |
| 334 | LOG_INFO("IOToken_Fixup: IPv6 inbound transport\n"); |
| 335 | } |
| 336 | else if (AppendFlags == BIT_29) |
| 337 | { // IPv4 checksum only update |
| 338 | Adapter_PEC_PktByte_Put(PacketHandle, Offset + 10, Append_p[0]); |
| 339 | Adapter_PEC_PktByte_Put(PacketHandle, Offset + 11, Append_p[1]); |
| 340 | LOG_INFO("IOToken_Fixup: IPv4 inbound tunnel\n"); |
| 341 | } |
| 342 | else if (AppendFlags == (BIT_31|BIT_30|BIT_29)) |
| 343 | { // IPv4 header update, proto + length + checksum. |
| 344 | Adapter_PEC_PktByte_Put(PacketHandle, Offset + 2, Append_p[0]); |
| 345 | Adapter_PEC_PktByte_Put(PacketHandle, Offset + 3, Append_p[1]); |
| 346 | Adapter_PEC_PktByte_Put(PacketHandle, Offset + 9, Append_p[5]); |
| 347 | Adapter_PEC_PktByte_Put(PacketHandle, Offset + 10, Append_p[8]); |
| 348 | Adapter_PEC_PktByte_Put(PacketHandle, Offset + 11, Append_p[9]); |
| 349 | LOG_INFO("IOToken_Fixup: IPv4 inbound transport\n"); |
| 350 | } |
| 351 | else |
| 352 | { |
| 353 | LOG_CRIT("IOToken_Fixup: Unexpected flags combination 0x%08x\n", |
| 354 | AppendFlags); |
| 355 | return -1; |
| 356 | } |
| 357 | } |
| 358 | return 0; |
| 359 | } |
| 360 | |
| 361 | /*---------------------------------------------------------------------------- |
| 362 | * IOToken_SAAddr_Update |
| 363 | */ |
| 364 | int |
| 365 | IOToken_SAAddr_Update( |
| 366 | const IOToken_PhysAddr_t * const SA_PhysAddr_p, |
| 367 | uint32_t * InTokenData_p) |
| 368 | { |
| 369 | IOTOKEN_CHECK_POINTER(SA_PhysAddr_p); |
| 370 | IOTOKEN_CHECK_POINTER(InTokenData_p); |
| 371 | |
| 372 | // Input Token word: Context (SA) low 32 bits physical address |
| 373 | InTokenData_p[IOTOKEN_SA_ADDR_LO_IN_WORD_OFFS] = SA_PhysAddr_p->Lo; |
| 374 | |
| 375 | // Input Token word: Context (SA) high 32 bits physical address |
| 376 | InTokenData_p[IOTOKEN_SA_ADDR_HI_IN_WORD_OFFS] = SA_PhysAddr_p->Hi; |
| 377 | |
| 378 | return 2; // updated 32-bit token words |
| 379 | } |
| 380 | |
| 381 | |
| 382 | /*---------------------------------------------------------------------------- |
| 383 | * IOToken_SAReuse_Update |
| 384 | */ |
| 385 | int |
| 386 | IOToken_SAReuse_Update( |
| 387 | const bool fReuseSA, |
| 388 | uint32_t * InTokenData_p) |
| 389 | { |
| 390 | IOTOKEN_CHECK_POINTER(InTokenData_p); |
| 391 | |
| 392 | // Enable Context Reuse auto detect if no new SA |
| 393 | if (fReuseSA) |
| 394 | InTokenData_p[IOTOKEN_HDR_IN_WORD_OFFS] |= BIT_21; |
| 395 | else |
| 396 | InTokenData_p[IOTOKEN_HDR_IN_WORD_OFFS] &= ~BIT_21; |
| 397 | |
| 398 | return 1; |
| 399 | } |
| 400 | |
| 401 | |
| 402 | /*---------------------------------------------------------------------------- |
| 403 | * IOToken_Mark_Set |
| 404 | */ |
| 405 | int |
| 406 | IOToken_Mark_Set( |
| 407 | uint32_t * InTokenData_p) |
| 408 | { |
| 409 | IOTOKEN_CHECK_POINTER(InTokenData_p); |
| 410 | |
| 411 | InTokenData_p[IOTOKEN_APP_ID_IN_WORD_OFFS] &= ~(MASK_7_BITS << 9); |
| 412 | InTokenData_p[IOTOKEN_APP_ID_IN_WORD_OFFS] |= IOTOKEN_MARK; |
| 413 | |
| 414 | return 1; |
| 415 | } |
| 416 | |
| 417 | |
| 418 | /*---------------------------------------------------------------------------- |
| 419 | * IOToken_Mark_Offset_Get |
| 420 | */ |
| 421 | int |
| 422 | IOToken_OutMarkOffset_Get(void) |
| 423 | { |
| 424 | return IOTOKEN_APP_ID_OUT_WORD_OFFS; |
| 425 | } |
| 426 | |
| 427 | |
| 428 | /*---------------------------------------------------------------------------- |
| 429 | * IOToken_Mark_Check |
| 430 | */ |
| 431 | int |
| 432 | IOToken_Mark_Check( |
| 433 | uint32_t * OutTokenData_p) |
| 434 | { |
| 435 | uint32_t Mark; |
| 436 | |
| 437 | IOTOKEN_CHECK_POINTER(OutTokenData_p); |
| 438 | |
| 439 | Mark = OutTokenData_p[IOTOKEN_APP_ID_OUT_WORD_OFFS] & IOTOKEN_MARK; |
| 440 | |
| 441 | if (Mark == IOTOKEN_MARK) |
| 442 | return 0; |
| 443 | else |
| 444 | return 1; |
| 445 | } |
| 446 | |
| 447 | |
| 448 | /*---------------------------------------------------------------------------- |
| 449 | * IOToken_Parse |
| 450 | */ |
| 451 | int |
| 452 | IOToken_Parse( |
| 453 | const uint32_t * Data_p, |
| 454 | IOToken_Output_Dscr_t * const Dscr_p) |
| 455 | { |
| 456 | unsigned int i, j = 0; |
| 457 | IOToken_Output_Dscr_Ext_t * Ext_p; |
| 458 | |
| 459 | IOTOKEN_CHECK_POINTER(Data_p); |
| 460 | IOTOKEN_CHECK_POINTER(Dscr_p); |
| 461 | |
| 462 | Ext_p = (IOToken_Output_Dscr_Ext_t *)Dscr_p->Ext_p; |
| 463 | |
| 464 | // Output Token word: EIP-96 Output Token Header Word |
| 465 | { |
| 466 | i = IOTOKEN_HDR_OUT_WORD_OFFS; |
| 467 | Dscr_p->OutPacket_ByteCount = Data_p[i] & MASK_17_BITS; |
| 468 | Dscr_p->ErrorCode = Data_p[i] >> 17 & MASK_15_BITS; |
| 469 | } |
| 470 | |
| 471 | // Output Token word: EIP-96 Output Token Bypass Data Length Word |
| 472 | { |
| 473 | i = IOTOKEN_BP_LEN_OUT_WORD_OFFS; |
| 474 | Dscr_p->BypassData_ByteCount = Data_p[i] & MASK_4_BITS; |
| 475 | Dscr_p->fHashAppended = (Data_p[i] & BIT_21) != 0; |
| 476 | |
| 477 | Dscr_p->Hash_ByteCount = Data_p[i] >> 22 & MASK_6_BITS; |
| 478 | |
| 479 | Dscr_p->fBytesAppended = (Data_p[i] & BIT_28) != 0; |
| 480 | Dscr_p->fChecksumAppended = (Data_p[i] & BIT_29) != 0; |
| 481 | Dscr_p->fNextHeaderAppended = (Data_p[i] & BIT_30) != 0; |
| 482 | Dscr_p->fLengthAppended = (Data_p[i] & BIT_31) != 0; |
| 483 | } |
| 484 | |
| 485 | // Output Token word: EIP-96 Output Token Application ID Word |
| 486 | { |
| 487 | i = IOTOKEN_APP_ID_OUT_WORD_OFFS; |
| 488 | Dscr_p->AppID = Data_p[i] >> 9 & MASK_7_BITS; |
| 489 | } |
| 490 | |
| 491 | // Output Token word: Pad Length and Next Header |
| 492 | { |
| 493 | i = IOTOKEN_PAD_NH_OUT_WORD_OFFS; |
| 494 | Dscr_p->NextHeader = Data_p[i] & MASK_8_BITS; |
| 495 | Dscr_p->Pad_ByteCount = Data_p[i] >> 8 & MASK_8_BITS; |
| 496 | } |
| 497 | |
| 498 | // Parse Output Token descriptor extension if requested |
| 499 | if (Ext_p) |
| 500 | { |
| 501 | // Output Token word: ToS/TC, DF, Firmware errors |
| 502 | { |
| 503 | j = IOTOKEN_BP_LEN_OUT_WORD_OFFS; |
| 504 | Ext_p->TOS_TC = Data_p[j] >> 5 & MASK_8_BITS; |
| 505 | |
| 506 | Ext_p->fDF = (Data_p[j] & BIT_13) != 0; |
| 507 | |
| 508 | Ext_p->CfyErrors = Data_p[j] >> 16 & MASK_5_BITS; |
| 509 | } |
| 510 | |
| 511 | #ifdef IOTOKEN_EXTENDED_ERRORS_ENABLE |
| 512 | if ((Data_p[IOTOKEN_HDR_OUT_WORD_OFFS] & BIT_31) != 0) |
| 513 | { |
| 514 | Ext_p->ExtErrors = (Data_p[IOTOKEN_HDR_OUT_WORD_OFFS] >> 17) & MASK_8_BITS; |
| 515 | } |
| 516 | else |
| 517 | #endif |
| 518 | { |
| 519 | Ext_p->ExtErrors = 0; |
| 520 | } |
| 521 | |
| 522 | // Output Token word: IP Length Delta and Offset |
| 523 | { |
| 524 | j = IOTOKEN_PAD_NH_OUT_WORD_OFFS; |
| 525 | Ext_p->Offset_ByteCount = Data_p[j] >> 16 & MASK_8_BITS; |
| 526 | Ext_p->IPDelta_ByteCount = Data_p[j] >> 24 & MASK_8_BITS; |
| 527 | } |
| 528 | |
| 529 | // Output Token word: SA physical address low/high words |
| 530 | { |
| 531 | j = IOTOKEN_SA_ADDR_LO_OUT_WORD_OFFS; |
| 532 | Ext_p->SA_PhysAddr.Lo = Data_p[j]; |
| 533 | |
| 534 | j = IOTOKEN_SA_ADDR_HI_OUT_WORD_OFFS; |
| 535 | Ext_p->SA_PhysAddr.Hi = Data_p[j]; |
| 536 | } |
| 537 | |
| 538 | // Output Token word: Application header processing context |
| 539 | { |
| 540 | j = IOTOKEN_NPH_CTX_OUT_WORD_OFFS; |
| 541 | Ext_p->NPH_Context = Data_p[j]; |
| 542 | } |
| 543 | |
| 544 | // Output Token word: Previous Next Header Offset |
| 545 | { |
| 546 | j = IOTOKEN_PREV_NH_OFFS_OUT_WORD_OFFS; |
| 547 | Ext_p->NextHeaderOffset = Data_p[j] & MASK_16_BITS; |
| 548 | Ext_p->fInIPv6 = ((Data_p[j] & BIT_16) != 0); |
| 549 | Ext_p->fFromEther = ((Data_p[j] & BIT_17) != 0); |
| 550 | Ext_p->fOutIPv6 = ((Data_p[j] & BIT_22) != 0); |
| 551 | Ext_p->fInbTunnel = ((Data_p[j] & BIT_23) != 0); |
| 552 | } |
| 553 | |
| 554 | #if IOTOKEN_BYPASS_WORD_COUNT > 0 |
| 555 | // Output Token word: Bypass Data |
| 556 | { |
| 557 | unsigned int k = 0; |
| 558 | if (Ext_p->BypassData_p) |
| 559 | { |
| 560 | for (k = 0; k < IOTOKEN_BYPASS_WORD_COUNT; k++) |
| 561 | Ext_p->BypassData_p[k] = |
| 562 | Data_p[k+IOTOKEN_BP_DATA_OUT_WORD_OFFS]; |
| 563 | } |
| 564 | j += k; |
| 565 | } |
| 566 | #endif |
| 567 | } |
| 568 | |
| 569 | // Output Token word: Reserved word not used |
| 570 | // i = IOTOKEN_RSVD_OUT_WORD_OFFS; |
| 571 | |
| 572 | return MAX(i, j); |
| 573 | } |
| 574 | |
| 575 | |
| 576 | /*---------------------------------------------------------------------------- |
| 577 | * IOToken_PacketLegth_Get |
| 578 | */ |
| 579 | int |
| 580 | IOToken_PacketLegth_Get( |
| 581 | const uint32_t * Data_p, |
| 582 | unsigned int * Pkt_ByteCount_p) |
| 583 | { |
| 584 | IOTOKEN_CHECK_POINTER(Data_p); |
| 585 | IOTOKEN_CHECK_POINTER(Pkt_ByteCount_p); |
| 586 | |
| 587 | *Pkt_ByteCount_p = Data_p[IOTOKEN_HDR_OUT_WORD_OFFS] & MASK_17_BITS; |
| 588 | |
| 589 | return 1; |
| 590 | } |
| 591 | |
| 592 | |
| 593 | /*---------------------------------------------------------------------------- |
| 594 | * IOToken_BypassLegth_Get |
| 595 | */ |
| 596 | int |
| 597 | IOToken_BypassLegth_Get( |
| 598 | const uint32_t * Data_p, |
| 599 | unsigned int * BD_ByteCount_p) |
| 600 | { |
| 601 | IOTOKEN_CHECK_POINTER(Data_p); |
| 602 | IOTOKEN_CHECK_POINTER(BD_ByteCount_p); |
| 603 | |
| 604 | *BD_ByteCount_p = Data_p[IOTOKEN_BP_LEN_OUT_WORD_OFFS] & MASK_4_BITS; |
| 605 | |
| 606 | return 1; |
| 607 | } |
| 608 | |
| 609 | |
| 610 | /*---------------------------------------------------------------------------- |
| 611 | * IOToken_ErrorCode_Get |
| 612 | */ |
| 613 | int |
| 614 | IOToken_ErrorCode_Get( |
| 615 | const uint32_t * Data_p, |
| 616 | unsigned int * ErrorCode_p) |
| 617 | { |
| 618 | IOTOKEN_CHECK_POINTER(Data_p); |
| 619 | IOTOKEN_CHECK_POINTER(ErrorCode_p); |
| 620 | |
| 621 | *ErrorCode_p = (Data_p[IOTOKEN_HDR_OUT_WORD_OFFS] >> 17) & MASK_15_BITS; |
| 622 | #ifdef IOTOKEN_EXTENDED_ERRORS_ENABLE |
| 623 | if ((Data_p[IOTOKEN_HDR_OUT_WORD_OFFS] & BIT_31) != 0) |
| 624 | { |
| 625 | *ErrorCode_p &= ~0x40ff; // Remove the detailed error code and related bits. |
| 626 | } |
| 627 | #endif |
| 628 | |
| 629 | return 1; |
| 630 | } |
| 631 | |
| 632 | |
| 633 | /* end of file iotoken.c */ |