ef10_filter.c revision 311484
1/*- 2 * Copyright (c) 2007-2016 Solarflare Communications Inc. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, 9 * this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright notice, 11 * this list of conditions and the following disclaimer in the documentation 12 * and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 15 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 16 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 21 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 22 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 23 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 24 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 * The views and conclusions contained in the software and documentation are 27 * those of the authors and should not be interpreted as representing official 28 * policies, either expressed or implied, of the FreeBSD Project. 29 */ 30 31#include <sys/cdefs.h> 32__FBSDID("$FreeBSD: stable/11/sys/dev/sfxge/common/ef10_filter.c 311484 2017-01-06 07:12:27Z arybchik $"); 33 34#include "efx.h" 35#include "efx_impl.h" 36 37#if EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD 38 39#if EFSYS_OPT_FILTER 40 41#define EFE_SPEC(eftp, index) ((eftp)->eft_entry[(index)].efe_spec) 42 43static efx_filter_spec_t * 44ef10_filter_entry_spec( 45 __in const ef10_filter_table_t *eftp, 46 __in unsigned int index) 47{ 48 return ((efx_filter_spec_t *)(EFE_SPEC(eftp, index) & 49 ~(uintptr_t)EFX_EF10_FILTER_FLAGS)); 50} 51 52static boolean_t 53ef10_filter_entry_is_busy( 54 __in const ef10_filter_table_t *eftp, 55 __in unsigned int index) 56{ 57 if (EFE_SPEC(eftp, index) & EFX_EF10_FILTER_FLAG_BUSY) 58 return (B_TRUE); 59 else 60 return (B_FALSE); 61} 62 63static boolean_t 64ef10_filter_entry_is_auto_old( 65 __in const ef10_filter_table_t *eftp, 66 __in unsigned int index) 67{ 68 if (EFE_SPEC(eftp, index) & EFX_EF10_FILTER_FLAG_AUTO_OLD) 69 return (B_TRUE); 70 else 71 return (B_FALSE); 72} 73 74static void 75ef10_filter_set_entry( 76 __inout ef10_filter_table_t *eftp, 77 __in unsigned int index, 78 __in_opt const efx_filter_spec_t *efsp) 79{ 80 EFE_SPEC(eftp, index) = (uintptr_t)efsp; 81} 82 83static void 84ef10_filter_set_entry_busy( 85 __inout ef10_filter_table_t *eftp, 86 __in unsigned int index) 87{ 88 EFE_SPEC(eftp, index) |= (uintptr_t)EFX_EF10_FILTER_FLAG_BUSY; 89} 90 91static void 92ef10_filter_set_entry_not_busy( 93 __inout ef10_filter_table_t *eftp, 94 __in unsigned int index) 95{ 96 EFE_SPEC(eftp, index) &= ~(uintptr_t)EFX_EF10_FILTER_FLAG_BUSY; 97} 98 99static void 100ef10_filter_set_entry_auto_old( 101 __inout ef10_filter_table_t *eftp, 102 __in unsigned int index) 103{ 104 EFSYS_ASSERT(ef10_filter_entry_spec(eftp, index) != NULL); 105 EFE_SPEC(eftp, index) |= (uintptr_t)EFX_EF10_FILTER_FLAG_AUTO_OLD; 106} 107 108static void 109ef10_filter_set_entry_not_auto_old( 110 __inout ef10_filter_table_t *eftp, 111 __in unsigned int index) 112{ 113 EFE_SPEC(eftp, index) &= ~(uintptr_t)EFX_EF10_FILTER_FLAG_AUTO_OLD; 114 EFSYS_ASSERT(ef10_filter_entry_spec(eftp, index) != NULL); 115} 116 117 __checkReturn efx_rc_t 118ef10_filter_init( 119 __in efx_nic_t *enp) 120{ 121 efx_rc_t rc; 122 ef10_filter_table_t *eftp; 123 124 EFSYS_ASSERT(enp->en_family == EFX_FAMILY_HUNTINGTON || 125 enp->en_family == EFX_FAMILY_MEDFORD); 126 127#define MATCH_MASK(match) (EFX_MASK32(match) << EFX_LOW_BIT(match)) 128 EFX_STATIC_ASSERT(EFX_FILTER_MATCH_REM_HOST == 129 MATCH_MASK(MC_CMD_FILTER_OP_IN_MATCH_SRC_IP)); 130 EFX_STATIC_ASSERT(EFX_FILTER_MATCH_LOC_HOST == 131 MATCH_MASK(MC_CMD_FILTER_OP_IN_MATCH_DST_IP)); 132 EFX_STATIC_ASSERT(EFX_FILTER_MATCH_REM_MAC == 133 MATCH_MASK(MC_CMD_FILTER_OP_IN_MATCH_SRC_MAC)); 134 EFX_STATIC_ASSERT(EFX_FILTER_MATCH_REM_PORT == 135 MATCH_MASK(MC_CMD_FILTER_OP_IN_MATCH_SRC_PORT)); 136 EFX_STATIC_ASSERT(EFX_FILTER_MATCH_LOC_MAC == 137 MATCH_MASK(MC_CMD_FILTER_OP_IN_MATCH_DST_MAC)); 138 EFX_STATIC_ASSERT(EFX_FILTER_MATCH_LOC_PORT == 139 MATCH_MASK(MC_CMD_FILTER_OP_IN_MATCH_DST_PORT)); 140 EFX_STATIC_ASSERT(EFX_FILTER_MATCH_ETHER_TYPE == 141 MATCH_MASK(MC_CMD_FILTER_OP_IN_MATCH_ETHER_TYPE)); 142 EFX_STATIC_ASSERT(EFX_FILTER_MATCH_INNER_VID == 143 MATCH_MASK(MC_CMD_FILTER_OP_IN_MATCH_INNER_VLAN)); 144 EFX_STATIC_ASSERT(EFX_FILTER_MATCH_OUTER_VID == 145 MATCH_MASK(MC_CMD_FILTER_OP_IN_MATCH_OUTER_VLAN)); 146 EFX_STATIC_ASSERT(EFX_FILTER_MATCH_IP_PROTO == 147 MATCH_MASK(MC_CMD_FILTER_OP_IN_MATCH_IP_PROTO)); 148 EFX_STATIC_ASSERT(EFX_FILTER_MATCH_UNKNOWN_MCAST_DST == 149 MATCH_MASK(MC_CMD_FILTER_OP_IN_MATCH_UNKNOWN_MCAST_DST)); 150 EFX_STATIC_ASSERT((uint32_t)EFX_FILTER_MATCH_UNKNOWN_UCAST_DST == 151 MATCH_MASK(MC_CMD_FILTER_OP_IN_MATCH_UNKNOWN_UCAST_DST)); 152#undef MATCH_MASK 153 154 EFSYS_KMEM_ALLOC(enp->en_esip, sizeof (ef10_filter_table_t), eftp); 155 156 if (!eftp) { 157 rc = ENOMEM; 158 goto fail1; 159 } 160 161 enp->en_filter.ef_ef10_filter_table = eftp; 162 163 return (0); 164 165fail1: 166 EFSYS_PROBE1(fail1, efx_rc_t, rc); 167 168 return (rc); 169} 170 171 void 172ef10_filter_fini( 173 __in efx_nic_t *enp) 174{ 175 EFSYS_ASSERT(enp->en_family == EFX_FAMILY_HUNTINGTON || 176 enp->en_family == EFX_FAMILY_MEDFORD); 177 178 if (enp->en_filter.ef_ef10_filter_table != NULL) { 179 EFSYS_KMEM_FREE(enp->en_esip, sizeof (ef10_filter_table_t), 180 enp->en_filter.ef_ef10_filter_table); 181 } 182} 183 184static __checkReturn efx_rc_t 185efx_mcdi_filter_op_add( 186 __in efx_nic_t *enp, 187 __in efx_filter_spec_t *spec, 188 __in unsigned int filter_op, 189 __inout ef10_filter_handle_t *handle) 190{ 191 efx_mcdi_req_t req; 192 uint8_t payload[MAX(MC_CMD_FILTER_OP_IN_LEN, 193 MC_CMD_FILTER_OP_OUT_LEN)]; 194 efx_rc_t rc; 195 196 memset(payload, 0, sizeof (payload)); 197 req.emr_cmd = MC_CMD_FILTER_OP; 198 req.emr_in_buf = payload; 199 req.emr_in_length = MC_CMD_FILTER_OP_IN_LEN; 200 req.emr_out_buf = payload; 201 req.emr_out_length = MC_CMD_FILTER_OP_OUT_LEN; 202 203 switch (filter_op) { 204 case MC_CMD_FILTER_OP_IN_OP_REPLACE: 205 MCDI_IN_SET_DWORD(req, FILTER_OP_IN_HANDLE_LO, 206 handle->efh_lo); 207 MCDI_IN_SET_DWORD(req, FILTER_OP_IN_HANDLE_HI, 208 handle->efh_hi); 209 /* Fall through */ 210 case MC_CMD_FILTER_OP_IN_OP_INSERT: 211 case MC_CMD_FILTER_OP_IN_OP_SUBSCRIBE: 212 MCDI_IN_SET_DWORD(req, FILTER_OP_IN_OP, filter_op); 213 break; 214 default: 215 EFSYS_ASSERT(0); 216 rc = EINVAL; 217 goto fail1; 218 } 219 220 MCDI_IN_SET_DWORD(req, FILTER_OP_IN_PORT_ID, 221 EVB_PORT_ID_ASSIGNED); 222 MCDI_IN_SET_DWORD(req, FILTER_OP_IN_MATCH_FIELDS, 223 spec->efs_match_flags); 224 MCDI_IN_SET_DWORD(req, FILTER_OP_IN_RX_DEST, 225 MC_CMD_FILTER_OP_IN_RX_DEST_HOST); 226 MCDI_IN_SET_DWORD(req, FILTER_OP_IN_RX_QUEUE, 227 spec->efs_dmaq_id); 228 if (spec->efs_flags & EFX_FILTER_FLAG_RX_RSS) { 229 MCDI_IN_SET_DWORD(req, FILTER_OP_IN_RX_CONTEXT, 230 spec->efs_rss_context); 231 } 232 MCDI_IN_SET_DWORD(req, FILTER_OP_IN_RX_MODE, 233 spec->efs_flags & EFX_FILTER_FLAG_RX_RSS ? 234 MC_CMD_FILTER_OP_IN_RX_MODE_RSS : 235 MC_CMD_FILTER_OP_IN_RX_MODE_SIMPLE); 236 MCDI_IN_SET_DWORD(req, FILTER_OP_IN_TX_DEST, 237 MC_CMD_FILTER_OP_IN_TX_DEST_DEFAULT); 238 239 if (filter_op != MC_CMD_FILTER_OP_IN_OP_REPLACE) { 240 /* 241 * NOTE: Unlike most MCDI requests, the filter fields 242 * are presented in network (big endian) byte order. 243 */ 244 memcpy(MCDI_IN2(req, uint8_t, FILTER_OP_IN_SRC_MAC), 245 spec->efs_rem_mac, EFX_MAC_ADDR_LEN); 246 memcpy(MCDI_IN2(req, uint8_t, FILTER_OP_IN_DST_MAC), 247 spec->efs_loc_mac, EFX_MAC_ADDR_LEN); 248 249 MCDI_IN_SET_WORD(req, FILTER_OP_IN_SRC_PORT, 250 __CPU_TO_BE_16(spec->efs_rem_port)); 251 MCDI_IN_SET_WORD(req, FILTER_OP_IN_DST_PORT, 252 __CPU_TO_BE_16(spec->efs_loc_port)); 253 254 MCDI_IN_SET_WORD(req, FILTER_OP_IN_ETHER_TYPE, 255 __CPU_TO_BE_16(spec->efs_ether_type)); 256 257 MCDI_IN_SET_WORD(req, FILTER_OP_IN_INNER_VLAN, 258 __CPU_TO_BE_16(spec->efs_inner_vid)); 259 MCDI_IN_SET_WORD(req, FILTER_OP_IN_OUTER_VLAN, 260 __CPU_TO_BE_16(spec->efs_outer_vid)); 261 262 /* IP protocol (in low byte, high byte is zero) */ 263 MCDI_IN_SET_BYTE(req, FILTER_OP_IN_IP_PROTO, 264 spec->efs_ip_proto); 265 266 EFX_STATIC_ASSERT(sizeof (spec->efs_rem_host) == 267 MC_CMD_FILTER_OP_IN_SRC_IP_LEN); 268 EFX_STATIC_ASSERT(sizeof (spec->efs_loc_host) == 269 MC_CMD_FILTER_OP_IN_DST_IP_LEN); 270 271 memcpy(MCDI_IN2(req, uint8_t, FILTER_OP_IN_SRC_IP), 272 &spec->efs_rem_host.eo_byte[0], 273 MC_CMD_FILTER_OP_IN_SRC_IP_LEN); 274 memcpy(MCDI_IN2(req, uint8_t, FILTER_OP_IN_DST_IP), 275 &spec->efs_loc_host.eo_byte[0], 276 MC_CMD_FILTER_OP_IN_DST_IP_LEN); 277 } 278 279 efx_mcdi_execute(enp, &req); 280 281 if (req.emr_rc != 0) { 282 rc = req.emr_rc; 283 goto fail2; 284 } 285 286 if (req.emr_out_length_used < MC_CMD_FILTER_OP_OUT_LEN) { 287 rc = EMSGSIZE; 288 goto fail3; 289 } 290 291 handle->efh_lo = MCDI_OUT_DWORD(req, FILTER_OP_OUT_HANDLE_LO); 292 handle->efh_hi = MCDI_OUT_DWORD(req, FILTER_OP_OUT_HANDLE_HI); 293 294 return (0); 295 296fail3: 297 EFSYS_PROBE(fail3); 298fail2: 299 EFSYS_PROBE(fail2); 300fail1: 301 EFSYS_PROBE1(fail1, efx_rc_t, rc); 302 303 return (rc); 304 305} 306 307static __checkReturn efx_rc_t 308efx_mcdi_filter_op_delete( 309 __in efx_nic_t *enp, 310 __in unsigned int filter_op, 311 __inout ef10_filter_handle_t *handle) 312{ 313 efx_mcdi_req_t req; 314 uint8_t payload[MAX(MC_CMD_FILTER_OP_IN_LEN, 315 MC_CMD_FILTER_OP_OUT_LEN)]; 316 efx_rc_t rc; 317 318 memset(payload, 0, sizeof (payload)); 319 req.emr_cmd = MC_CMD_FILTER_OP; 320 req.emr_in_buf = payload; 321 req.emr_in_length = MC_CMD_FILTER_OP_IN_LEN; 322 req.emr_out_buf = payload; 323 req.emr_out_length = MC_CMD_FILTER_OP_OUT_LEN; 324 325 switch (filter_op) { 326 case MC_CMD_FILTER_OP_IN_OP_REMOVE: 327 MCDI_IN_SET_DWORD(req, FILTER_OP_IN_OP, 328 MC_CMD_FILTER_OP_IN_OP_REMOVE); 329 break; 330 case MC_CMD_FILTER_OP_IN_OP_UNSUBSCRIBE: 331 MCDI_IN_SET_DWORD(req, FILTER_OP_IN_OP, 332 MC_CMD_FILTER_OP_IN_OP_UNSUBSCRIBE); 333 break; 334 default: 335 EFSYS_ASSERT(0); 336 rc = EINVAL; 337 goto fail1; 338 } 339 340 MCDI_IN_SET_DWORD(req, FILTER_OP_IN_HANDLE_LO, handle->efh_lo); 341 MCDI_IN_SET_DWORD(req, FILTER_OP_IN_HANDLE_HI, handle->efh_hi); 342 343 efx_mcdi_execute_quiet(enp, &req); 344 345 if (req.emr_rc != 0) { 346 rc = req.emr_rc; 347 goto fail2; 348 } 349 350 if (req.emr_out_length_used < MC_CMD_FILTER_OP_OUT_LEN) { 351 rc = EMSGSIZE; 352 goto fail3; 353 } 354 355 return (0); 356 357fail3: 358 EFSYS_PROBE(fail3); 359 360fail2: 361 EFSYS_PROBE(fail2); 362fail1: 363 EFSYS_PROBE1(fail1, efx_rc_t, rc); 364 365 return (rc); 366} 367 368static __checkReturn boolean_t 369ef10_filter_equal( 370 __in const efx_filter_spec_t *left, 371 __in const efx_filter_spec_t *right) 372{ 373 /* FIXME: Consider rx vs tx filters (look at efs_flags) */ 374 if (left->efs_match_flags != right->efs_match_flags) 375 return (B_FALSE); 376 if (!EFX_OWORD_IS_EQUAL(left->efs_rem_host, right->efs_rem_host)) 377 return (B_FALSE); 378 if (!EFX_OWORD_IS_EQUAL(left->efs_loc_host, right->efs_loc_host)) 379 return (B_FALSE); 380 if (memcmp(left->efs_rem_mac, right->efs_rem_mac, EFX_MAC_ADDR_LEN)) 381 return (B_FALSE); 382 if (memcmp(left->efs_loc_mac, right->efs_loc_mac, EFX_MAC_ADDR_LEN)) 383 return (B_FALSE); 384 if (left->efs_rem_port != right->efs_rem_port) 385 return (B_FALSE); 386 if (left->efs_loc_port != right->efs_loc_port) 387 return (B_FALSE); 388 if (left->efs_inner_vid != right->efs_inner_vid) 389 return (B_FALSE); 390 if (left->efs_outer_vid != right->efs_outer_vid) 391 return (B_FALSE); 392 if (left->efs_ether_type != right->efs_ether_type) 393 return (B_FALSE); 394 if (left->efs_ip_proto != right->efs_ip_proto) 395 return (B_FALSE); 396 397 return (B_TRUE); 398 399} 400 401static __checkReturn boolean_t 402ef10_filter_same_dest( 403 __in const efx_filter_spec_t *left, 404 __in const efx_filter_spec_t *right) 405{ 406 if ((left->efs_flags & EFX_FILTER_FLAG_RX_RSS) && 407 (right->efs_flags & EFX_FILTER_FLAG_RX_RSS)) { 408 if (left->efs_rss_context == right->efs_rss_context) 409 return (B_TRUE); 410 } else if ((~(left->efs_flags) & EFX_FILTER_FLAG_RX_RSS) && 411 (~(right->efs_flags) & EFX_FILTER_FLAG_RX_RSS)) { 412 if (left->efs_dmaq_id == right->efs_dmaq_id) 413 return (B_TRUE); 414 } 415 return (B_FALSE); 416} 417 418static __checkReturn uint32_t 419ef10_filter_hash( 420 __in efx_filter_spec_t *spec) 421{ 422 EFX_STATIC_ASSERT((sizeof (efx_filter_spec_t) % sizeof (uint32_t)) 423 == 0); 424 EFX_STATIC_ASSERT((EFX_FIELD_OFFSET(efx_filter_spec_t, efs_outer_vid) % 425 sizeof (uint32_t)) == 0); 426 427 /* 428 * As the area of the efx_filter_spec_t we need to hash is DWORD 429 * aligned and an exact number of DWORDs in size we can use the 430 * optimised efx_hash_dwords() rather than efx_hash_bytes() 431 */ 432 return (efx_hash_dwords((const uint32_t *)&spec->efs_outer_vid, 433 (sizeof (efx_filter_spec_t) - 434 EFX_FIELD_OFFSET(efx_filter_spec_t, efs_outer_vid)) / 435 sizeof (uint32_t), 0)); 436} 437 438/* 439 * Decide whether a filter should be exclusive or else should allow 440 * delivery to additional recipients. Currently we decide that 441 * filters for specific local unicast MAC and IP addresses are 442 * exclusive. 443 */ 444static __checkReturn boolean_t 445ef10_filter_is_exclusive( 446 __in efx_filter_spec_t *spec) 447{ 448 if ((spec->efs_match_flags & EFX_FILTER_MATCH_LOC_MAC) && 449 !EFX_MAC_ADDR_IS_MULTICAST(spec->efs_loc_mac)) 450 return (B_TRUE); 451 452 if ((spec->efs_match_flags & 453 (EFX_FILTER_MATCH_ETHER_TYPE | EFX_FILTER_MATCH_LOC_HOST)) == 454 (EFX_FILTER_MATCH_ETHER_TYPE | EFX_FILTER_MATCH_LOC_HOST)) { 455 if ((spec->efs_ether_type == EFX_ETHER_TYPE_IPV4) && 456 ((spec->efs_loc_host.eo_u8[0] & 0xf) != 0xe)) 457 return (B_TRUE); 458 if ((spec->efs_ether_type == EFX_ETHER_TYPE_IPV6) && 459 (spec->efs_loc_host.eo_u8[0] != 0xff)) 460 return (B_TRUE); 461 } 462 463 return (B_FALSE); 464} 465 466 __checkReturn efx_rc_t 467ef10_filter_restore( 468 __in efx_nic_t *enp) 469{ 470 int tbl_id; 471 efx_filter_spec_t *spec; 472 ef10_filter_table_t *eftp = enp->en_filter.ef_ef10_filter_table; 473 boolean_t restoring; 474 efsys_lock_state_t state; 475 efx_rc_t rc; 476 477 EFSYS_ASSERT(enp->en_family == EFX_FAMILY_HUNTINGTON || 478 enp->en_family == EFX_FAMILY_MEDFORD); 479 480 for (tbl_id = 0; tbl_id < EFX_EF10_FILTER_TBL_ROWS; tbl_id++) { 481 482 EFSYS_LOCK(enp->en_eslp, state); 483 484 spec = ef10_filter_entry_spec(eftp, tbl_id); 485 if (spec == NULL) { 486 restoring = B_FALSE; 487 } else if (ef10_filter_entry_is_busy(eftp, tbl_id)) { 488 /* Ignore busy entries. */ 489 restoring = B_FALSE; 490 } else { 491 ef10_filter_set_entry_busy(eftp, tbl_id); 492 restoring = B_TRUE; 493 } 494 495 EFSYS_UNLOCK(enp->en_eslp, state); 496 497 if (restoring == B_FALSE) 498 continue; 499 500 if (ef10_filter_is_exclusive(spec)) { 501 rc = efx_mcdi_filter_op_add(enp, spec, 502 MC_CMD_FILTER_OP_IN_OP_INSERT, 503 &eftp->eft_entry[tbl_id].efe_handle); 504 } else { 505 rc = efx_mcdi_filter_op_add(enp, spec, 506 MC_CMD_FILTER_OP_IN_OP_SUBSCRIBE, 507 &eftp->eft_entry[tbl_id].efe_handle); 508 } 509 510 if (rc != 0) 511 goto fail1; 512 513 EFSYS_LOCK(enp->en_eslp, state); 514 515 ef10_filter_set_entry_not_busy(eftp, tbl_id); 516 517 EFSYS_UNLOCK(enp->en_eslp, state); 518 } 519 520 return (0); 521 522fail1: 523 EFSYS_PROBE1(fail1, efx_rc_t, rc); 524 525 return (rc); 526} 527 528/* 529 * An arbitrary search limit for the software hash table. As per the linux net 530 * driver. 531 */ 532#define EF10_FILTER_SEARCH_LIMIT 200 533 534static __checkReturn efx_rc_t 535ef10_filter_add_internal( 536 __in efx_nic_t *enp, 537 __inout efx_filter_spec_t *spec, 538 __in boolean_t may_replace, 539 __out_opt uint32_t *filter_id) 540{ 541 efx_rc_t rc; 542 ef10_filter_table_t *eftp = enp->en_filter.ef_ef10_filter_table; 543 efx_filter_spec_t *saved_spec; 544 uint32_t hash; 545 unsigned int depth; 546 int ins_index; 547 boolean_t replacing = B_FALSE; 548 unsigned int i; 549 efsys_lock_state_t state; 550 boolean_t locked = B_FALSE; 551 552 EFSYS_ASSERT(enp->en_family == EFX_FAMILY_HUNTINGTON || 553 enp->en_family == EFX_FAMILY_MEDFORD); 554 555#if EFSYS_OPT_RX_SCALE 556 spec->efs_rss_context = enp->en_rss_context; 557#endif 558 559 hash = ef10_filter_hash(spec); 560 561 /* 562 * FIXME: Add support for inserting filters of different priorities 563 * and removing lower priority multicast filters (bug 42378) 564 */ 565 566 /* 567 * Find any existing filters with the same match tuple or 568 * else a free slot to insert at. If any of them are busy, 569 * we have to wait and retry. 570 */ 571 for (;;) { 572 ins_index = -1; 573 depth = 1; 574 EFSYS_LOCK(enp->en_eslp, state); 575 locked = B_TRUE; 576 577 for (;;) { 578 i = (hash + depth) & (EFX_EF10_FILTER_TBL_ROWS - 1); 579 saved_spec = ef10_filter_entry_spec(eftp, i); 580 581 if (!saved_spec) { 582 if (ins_index < 0) { 583 ins_index = i; 584 } 585 } else if (ef10_filter_equal(spec, saved_spec)) { 586 if (ef10_filter_entry_is_busy(eftp, i)) 587 break; 588 if (saved_spec->efs_priority 589 == EFX_FILTER_PRI_AUTO) { 590 ins_index = i; 591 goto found; 592 } else if (ef10_filter_is_exclusive(spec)) { 593 if (may_replace) { 594 ins_index = i; 595 goto found; 596 } else { 597 rc = EEXIST; 598 goto fail1; 599 } 600 } 601 602 /* Leave existing */ 603 } 604 605 /* 606 * Once we reach the maximum search depth, use 607 * the first suitable slot or return EBUSY if 608 * there was none. 609 */ 610 if (depth == EF10_FILTER_SEARCH_LIMIT) { 611 if (ins_index < 0) { 612 rc = EBUSY; 613 goto fail2; 614 } 615 goto found; 616 } 617 depth++; 618 } 619 EFSYS_UNLOCK(enp->en_eslp, state); 620 locked = B_FALSE; 621 } 622 623found: 624 /* 625 * Create a software table entry if necessary, and mark it 626 * busy. We might yet fail to insert, but any attempt to 627 * insert a conflicting filter while we're waiting for the 628 * firmware must find the busy entry. 629 */ 630 saved_spec = ef10_filter_entry_spec(eftp, ins_index); 631 if (saved_spec) { 632 if (saved_spec->efs_priority == EFX_FILTER_PRI_AUTO) { 633 /* This is a filter we are refreshing */ 634 ef10_filter_set_entry_not_auto_old(eftp, ins_index); 635 goto out_unlock; 636 637 } 638 replacing = B_TRUE; 639 } else { 640 EFSYS_KMEM_ALLOC(enp->en_esip, sizeof (*spec), saved_spec); 641 if (!saved_spec) { 642 rc = ENOMEM; 643 goto fail3; 644 } 645 *saved_spec = *spec; 646 ef10_filter_set_entry(eftp, ins_index, saved_spec); 647 } 648 ef10_filter_set_entry_busy(eftp, ins_index); 649 650 EFSYS_UNLOCK(enp->en_eslp, state); 651 locked = B_FALSE; 652 653 /* 654 * On replacing the filter handle may change after after a successful 655 * replace operation. 656 */ 657 if (replacing) { 658 rc = efx_mcdi_filter_op_add(enp, spec, 659 MC_CMD_FILTER_OP_IN_OP_REPLACE, 660 &eftp->eft_entry[ins_index].efe_handle); 661 } else if (ef10_filter_is_exclusive(spec)) { 662 rc = efx_mcdi_filter_op_add(enp, spec, 663 MC_CMD_FILTER_OP_IN_OP_INSERT, 664 &eftp->eft_entry[ins_index].efe_handle); 665 } else { 666 rc = efx_mcdi_filter_op_add(enp, spec, 667 MC_CMD_FILTER_OP_IN_OP_SUBSCRIBE, 668 &eftp->eft_entry[ins_index].efe_handle); 669 } 670 671 if (rc != 0) 672 goto fail4; 673 674 EFSYS_LOCK(enp->en_eslp, state); 675 locked = B_TRUE; 676 677 if (replacing) { 678 /* Update the fields that may differ */ 679 saved_spec->efs_priority = spec->efs_priority; 680 saved_spec->efs_flags = spec->efs_flags; 681 saved_spec->efs_rss_context = spec->efs_rss_context; 682 saved_spec->efs_dmaq_id = spec->efs_dmaq_id; 683 } 684 685 ef10_filter_set_entry_not_busy(eftp, ins_index); 686 687out_unlock: 688 689 EFSYS_UNLOCK(enp->en_eslp, state); 690 locked = B_FALSE; 691 692 if (filter_id) 693 *filter_id = ins_index; 694 695 return (0); 696 697fail4: 698 EFSYS_PROBE(fail4); 699 700 if (!replacing) { 701 EFSYS_KMEM_FREE(enp->en_esip, sizeof (*spec), saved_spec); 702 saved_spec = NULL; 703 } 704 ef10_filter_set_entry_not_busy(eftp, ins_index); 705 ef10_filter_set_entry(eftp, ins_index, NULL); 706 707fail3: 708 EFSYS_PROBE(fail3); 709 710fail2: 711 EFSYS_PROBE(fail2); 712 713fail1: 714 EFSYS_PROBE1(fail1, efx_rc_t, rc); 715 716 if (locked) 717 EFSYS_UNLOCK(enp->en_eslp, state); 718 719 return (rc); 720} 721 722 __checkReturn efx_rc_t 723ef10_filter_add( 724 __in efx_nic_t *enp, 725 __inout efx_filter_spec_t *spec, 726 __in boolean_t may_replace) 727{ 728 efx_rc_t rc; 729 730 rc = ef10_filter_add_internal(enp, spec, may_replace, NULL); 731 if (rc != 0) 732 goto fail1; 733 734 return (0); 735 736fail1: 737 EFSYS_PROBE1(fail1, efx_rc_t, rc); 738 739 return (rc); 740} 741 742 743static __checkReturn efx_rc_t 744ef10_filter_delete_internal( 745 __in efx_nic_t *enp, 746 __in uint32_t filter_id) 747{ 748 efx_rc_t rc; 749 ef10_filter_table_t *table = enp->en_filter.ef_ef10_filter_table; 750 efx_filter_spec_t *spec; 751 efsys_lock_state_t state; 752 uint32_t filter_idx = filter_id % EFX_EF10_FILTER_TBL_ROWS; 753 754 /* 755 * Find the software table entry and mark it busy. Don't 756 * remove it yet; any attempt to update while we're waiting 757 * for the firmware must find the busy entry. 758 * 759 * FIXME: What if the busy flag is never cleared? 760 */ 761 EFSYS_LOCK(enp->en_eslp, state); 762 while (ef10_filter_entry_is_busy(table, filter_idx)) { 763 EFSYS_UNLOCK(enp->en_eslp, state); 764 EFSYS_SPIN(1); 765 EFSYS_LOCK(enp->en_eslp, state); 766 } 767 if ((spec = ef10_filter_entry_spec(table, filter_idx)) != NULL) { 768 ef10_filter_set_entry_busy(table, filter_idx); 769 } 770 EFSYS_UNLOCK(enp->en_eslp, state); 771 772 if (spec == NULL) { 773 rc = ENOENT; 774 goto fail1; 775 } 776 777 /* 778 * Try to remove the hardware filter. This may fail if the MC has 779 * rebooted (which frees all hardware filter resources). 780 */ 781 if (ef10_filter_is_exclusive(spec)) { 782 rc = efx_mcdi_filter_op_delete(enp, 783 MC_CMD_FILTER_OP_IN_OP_REMOVE, 784 &table->eft_entry[filter_idx].efe_handle); 785 } else { 786 rc = efx_mcdi_filter_op_delete(enp, 787 MC_CMD_FILTER_OP_IN_OP_UNSUBSCRIBE, 788 &table->eft_entry[filter_idx].efe_handle); 789 } 790 791 /* Free the software table entry */ 792 EFSYS_LOCK(enp->en_eslp, state); 793 ef10_filter_set_entry_not_busy(table, filter_idx); 794 ef10_filter_set_entry(table, filter_idx, NULL); 795 EFSYS_UNLOCK(enp->en_eslp, state); 796 797 EFSYS_KMEM_FREE(enp->en_esip, sizeof (*spec), spec); 798 799 /* Check result of hardware filter removal */ 800 if (rc != 0) 801 goto fail2; 802 803 return (0); 804 805fail2: 806 EFSYS_PROBE(fail2); 807 808fail1: 809 EFSYS_PROBE1(fail1, efx_rc_t, rc); 810 811 return (rc); 812} 813 814 __checkReturn efx_rc_t 815ef10_filter_delete( 816 __in efx_nic_t *enp, 817 __inout efx_filter_spec_t *spec) 818{ 819 efx_rc_t rc; 820 ef10_filter_table_t *table = enp->en_filter.ef_ef10_filter_table; 821 efx_filter_spec_t *saved_spec; 822 unsigned int hash; 823 unsigned int depth; 824 unsigned int i; 825 efsys_lock_state_t state; 826 boolean_t locked = B_FALSE; 827 828 EFSYS_ASSERT(enp->en_family == EFX_FAMILY_HUNTINGTON || 829 enp->en_family == EFX_FAMILY_MEDFORD); 830 831 hash = ef10_filter_hash(spec); 832 833 EFSYS_LOCK(enp->en_eslp, state); 834 locked = B_TRUE; 835 836 depth = 1; 837 for (;;) { 838 i = (hash + depth) & (EFX_EF10_FILTER_TBL_ROWS - 1); 839 saved_spec = ef10_filter_entry_spec(table, i); 840 if (saved_spec && ef10_filter_equal(spec, saved_spec) && 841 ef10_filter_same_dest(spec, saved_spec)) { 842 break; 843 } 844 if (depth == EF10_FILTER_SEARCH_LIMIT) { 845 rc = ENOENT; 846 goto fail1; 847 } 848 depth++; 849 } 850 851 EFSYS_UNLOCK(enp->en_eslp, state); 852 locked = B_FALSE; 853 854 rc = ef10_filter_delete_internal(enp, i); 855 if (rc != 0) 856 goto fail2; 857 858 return (0); 859 860fail2: 861 EFSYS_PROBE(fail2); 862 863fail1: 864 EFSYS_PROBE1(fail1, efx_rc_t, rc); 865 866 if (locked) 867 EFSYS_UNLOCK(enp->en_eslp, state); 868 869 return (rc); 870} 871 872static __checkReturn efx_rc_t 873efx_mcdi_get_parser_disp_info( 874 __in efx_nic_t *enp, 875 __out uint32_t *list, 876 __out size_t *length) 877{ 878 efx_mcdi_req_t req; 879 uint8_t payload[MAX(MC_CMD_GET_PARSER_DISP_INFO_IN_LEN, 880 MC_CMD_GET_PARSER_DISP_INFO_OUT_LENMAX)]; 881 efx_rc_t rc; 882 883 (void) memset(payload, 0, sizeof (payload)); 884 req.emr_cmd = MC_CMD_GET_PARSER_DISP_INFO; 885 req.emr_in_buf = payload; 886 req.emr_in_length = MC_CMD_GET_PARSER_DISP_INFO_IN_LEN; 887 req.emr_out_buf = payload; 888 req.emr_out_length = MC_CMD_GET_PARSER_DISP_INFO_OUT_LENMAX; 889 890 MCDI_IN_SET_DWORD(req, GET_PARSER_DISP_INFO_OUT_OP, 891 MC_CMD_GET_PARSER_DISP_INFO_IN_OP_GET_SUPPORTED_RX_MATCHES); 892 893 efx_mcdi_execute(enp, &req); 894 895 if (req.emr_rc != 0) { 896 rc = req.emr_rc; 897 goto fail1; 898 } 899 900 *length = MCDI_OUT_DWORD(req, 901 GET_PARSER_DISP_INFO_OUT_NUM_SUPPORTED_MATCHES); 902 903 if (req.emr_out_length_used < 904 MC_CMD_GET_PARSER_DISP_INFO_OUT_LEN(*length)) { 905 rc = EMSGSIZE; 906 goto fail2; 907 } 908 909 memcpy(list, 910 MCDI_OUT2(req, 911 uint32_t, 912 GET_PARSER_DISP_INFO_OUT_SUPPORTED_MATCHES), 913 (*length) * sizeof (uint32_t)); 914 EFX_STATIC_ASSERT(sizeof (uint32_t) == 915 MC_CMD_GET_PARSER_DISP_INFO_OUT_SUPPORTED_MATCHES_LEN); 916 917 return (0); 918 919fail2: 920 EFSYS_PROBE(fail2); 921fail1: 922 EFSYS_PROBE1(fail1, efx_rc_t, rc); 923 924 return (rc); 925} 926 927 __checkReturn efx_rc_t 928ef10_filter_supported_filters( 929 __in efx_nic_t *enp, 930 __out uint32_t *list, 931 __out size_t *length) 932{ 933 efx_rc_t rc; 934 935 if ((rc = efx_mcdi_get_parser_disp_info(enp, list, length)) != 0) 936 goto fail1; 937 938 return (0); 939 940fail1: 941 EFSYS_PROBE1(fail1, efx_rc_t, rc); 942 943 return (rc); 944} 945 946static __checkReturn efx_rc_t 947ef10_filter_insert_unicast( 948 __in efx_nic_t *enp, 949 __in_ecount(6) uint8_t const *addr, 950 __in efx_filter_flags_t filter_flags) 951{ 952 ef10_filter_table_t *eftp = enp->en_filter.ef_ef10_filter_table; 953 efx_filter_spec_t spec; 954 efx_rc_t rc; 955 956 /* Insert the filter for the local station address */ 957 efx_filter_spec_init_rx(&spec, EFX_FILTER_PRI_AUTO, 958 filter_flags, 959 eftp->eft_default_rxq); 960 efx_filter_spec_set_eth_local(&spec, EFX_FILTER_SPEC_VID_UNSPEC, addr); 961 962 rc = ef10_filter_add_internal(enp, &spec, B_TRUE, 963 &eftp->eft_unicst_filter_indexes[eftp->eft_unicst_filter_count]); 964 if (rc != 0) 965 goto fail1; 966 967 eftp->eft_unicst_filter_count++; 968 EFSYS_ASSERT(eftp->eft_unicst_filter_count <= 969 EFX_EF10_FILTER_UNICAST_FILTERS_MAX); 970 971 return (0); 972 973fail1: 974 EFSYS_PROBE1(fail1, efx_rc_t, rc); 975 return (rc); 976} 977 978static __checkReturn efx_rc_t 979ef10_filter_insert_all_unicast( 980 __in efx_nic_t *enp, 981 __in efx_filter_flags_t filter_flags) 982{ 983 ef10_filter_table_t *eftp = enp->en_filter.ef_ef10_filter_table; 984 efx_filter_spec_t spec; 985 efx_rc_t rc; 986 987 /* Insert the unknown unicast filter */ 988 efx_filter_spec_init_rx(&spec, EFX_FILTER_PRI_AUTO, 989 filter_flags, 990 eftp->eft_default_rxq); 991 efx_filter_spec_set_uc_def(&spec); 992 rc = ef10_filter_add_internal(enp, &spec, B_TRUE, 993 &eftp->eft_unicst_filter_indexes[eftp->eft_unicst_filter_count]); 994 if (rc != 0) 995 goto fail1; 996 997 eftp->eft_unicst_filter_count++; 998 EFSYS_ASSERT(eftp->eft_unicst_filter_count <= 999 EFX_EF10_FILTER_UNICAST_FILTERS_MAX); 1000 1001 return (0); 1002 1003fail1: 1004 EFSYS_PROBE1(fail1, efx_rc_t, rc); 1005 return (rc); 1006} 1007 1008static __checkReturn efx_rc_t 1009ef10_filter_insert_multicast_list( 1010 __in efx_nic_t *enp, 1011 __in boolean_t mulcst, 1012 __in boolean_t brdcst, 1013 __in_ecount(6*count) uint8_t const *addrs, 1014 __in uint32_t count, 1015 __in efx_filter_flags_t filter_flags, 1016 __in boolean_t rollback) 1017{ 1018 ef10_filter_table_t *eftp = enp->en_filter.ef_ef10_filter_table; 1019 efx_filter_spec_t spec; 1020 uint8_t addr[6]; 1021 uint32_t i; 1022 uint32_t filter_index; 1023 uint32_t filter_count; 1024 efx_rc_t rc; 1025 1026 if (mulcst == B_FALSE) 1027 count = 0; 1028 1029 if (count + (brdcst ? 1 : 0) > 1030 EFX_ARRAY_SIZE(eftp->eft_mulcst_filter_indexes)) { 1031 /* Too many MAC addresses */ 1032 rc = EINVAL; 1033 goto fail1; 1034 } 1035 1036 /* Insert/renew multicast address list filters */ 1037 filter_count = 0; 1038 for (i = 0; i < count; i++) { 1039 efx_filter_spec_init_rx(&spec, 1040 EFX_FILTER_PRI_AUTO, 1041 filter_flags, 1042 eftp->eft_default_rxq); 1043 1044 efx_filter_spec_set_eth_local(&spec, 1045 EFX_FILTER_SPEC_VID_UNSPEC, 1046 &addrs[i * EFX_MAC_ADDR_LEN]); 1047 1048 rc = ef10_filter_add_internal(enp, &spec, B_TRUE, 1049 &filter_index); 1050 1051 if (rc == 0) { 1052 eftp->eft_mulcst_filter_indexes[filter_count] = 1053 filter_index; 1054 filter_count++; 1055 } else if (rollback == B_TRUE) { 1056 /* Only stop upon failure if told to rollback */ 1057 goto rollback; 1058 } 1059 1060 } 1061 1062 if (brdcst == B_TRUE) { 1063 /* Insert/renew broadcast address filter */ 1064 efx_filter_spec_init_rx(&spec, EFX_FILTER_PRI_AUTO, 1065 filter_flags, 1066 eftp->eft_default_rxq); 1067 1068 EFX_MAC_BROADCAST_ADDR_SET(addr); 1069 efx_filter_spec_set_eth_local(&spec, EFX_FILTER_SPEC_VID_UNSPEC, 1070 addr); 1071 1072 rc = ef10_filter_add_internal(enp, &spec, B_TRUE, 1073 &filter_index); 1074 1075 if (rc == 0) { 1076 eftp->eft_mulcst_filter_indexes[filter_count] = 1077 filter_index; 1078 filter_count++; 1079 } else if (rollback == B_TRUE) { 1080 /* Only stop upon failure if told to rollback */ 1081 goto rollback; 1082 } 1083 } 1084 1085 eftp->eft_mulcst_filter_count = filter_count; 1086 eftp->eft_using_all_mulcst = B_FALSE; 1087 1088 return (0); 1089 1090rollback: 1091 /* Remove any filters we have inserted */ 1092 i = filter_count; 1093 while (i--) { 1094 (void) ef10_filter_delete_internal(enp, 1095 eftp->eft_mulcst_filter_indexes[i]); 1096 } 1097 eftp->eft_mulcst_filter_count = 0; 1098 1099fail1: 1100 EFSYS_PROBE1(fail1, efx_rc_t, rc); 1101 1102 return (rc); 1103} 1104 1105static __checkReturn efx_rc_t 1106ef10_filter_insert_all_multicast( 1107 __in efx_nic_t *enp, 1108 __in efx_filter_flags_t filter_flags) 1109{ 1110 ef10_filter_table_t *eftp = enp->en_filter.ef_ef10_filter_table; 1111 efx_filter_spec_t spec; 1112 efx_rc_t rc; 1113 1114 /* Insert the unknown multicast filter */ 1115 efx_filter_spec_init_rx(&spec, EFX_FILTER_PRI_AUTO, 1116 filter_flags, 1117 eftp->eft_default_rxq); 1118 efx_filter_spec_set_mc_def(&spec); 1119 1120 rc = ef10_filter_add_internal(enp, &spec, B_TRUE, 1121 &eftp->eft_mulcst_filter_indexes[0]); 1122 if (rc != 0) 1123 goto fail1; 1124 1125 eftp->eft_mulcst_filter_count = 1; 1126 eftp->eft_using_all_mulcst = B_TRUE; 1127 1128 /* 1129 * FIXME: If brdcst == B_FALSE, add a filter to drop broadcast traffic. 1130 */ 1131 1132 return (0); 1133 1134fail1: 1135 EFSYS_PROBE1(fail1, efx_rc_t, rc); 1136 1137 return (rc); 1138} 1139 1140static void 1141ef10_filter_remove_old( 1142 __in efx_nic_t *enp) 1143{ 1144 ef10_filter_table_t *table = enp->en_filter.ef_ef10_filter_table; 1145 uint32_t i; 1146 1147 for (i = 0; i < EFX_ARRAY_SIZE(table->eft_entry); i++) { 1148 if (ef10_filter_entry_is_auto_old(table, i)) { 1149 (void) ef10_filter_delete_internal(enp, i); 1150 } 1151 } 1152} 1153 1154 1155static __checkReturn efx_rc_t 1156ef10_filter_get_workarounds( 1157 __in efx_nic_t *enp) 1158{ 1159 efx_nic_cfg_t *encp = &enp->en_nic_cfg; 1160 uint32_t implemented = 0; 1161 uint32_t enabled = 0; 1162 efx_rc_t rc; 1163 1164 rc = efx_mcdi_get_workarounds(enp, &implemented, &enabled); 1165 if (rc == 0) { 1166 /* Check if chained multicast filter support is enabled */ 1167 if (implemented & enabled & MC_CMD_GET_WORKAROUNDS_OUT_BUG26807) 1168 encp->enc_bug26807_workaround = B_TRUE; 1169 else 1170 encp->enc_bug26807_workaround = B_FALSE; 1171 } else if (rc == ENOTSUP) { 1172 /* 1173 * Firmware is too old to support GET_WORKAROUNDS, and support 1174 * for this workaround was implemented later. 1175 */ 1176 encp->enc_bug26807_workaround = B_FALSE; 1177 } else { 1178 goto fail1; 1179 } 1180 1181 return (0); 1182 1183fail1: 1184 EFSYS_PROBE1(fail1, efx_rc_t, rc); 1185 1186 return (rc); 1187 1188} 1189 1190 1191/* 1192 * Reconfigure all filters. 1193 * If all_unicst and/or all mulcst filters cannot be applied then 1194 * return ENOTSUP (Note the filters for the specified addresses are 1195 * still applied in this case). 1196 */ 1197 __checkReturn efx_rc_t 1198ef10_filter_reconfigure( 1199 __in efx_nic_t *enp, 1200 __in_ecount(6) uint8_t const *mac_addr, 1201 __in boolean_t all_unicst, 1202 __in boolean_t mulcst, 1203 __in boolean_t all_mulcst, 1204 __in boolean_t brdcst, 1205 __in_ecount(6*count) uint8_t const *addrs, 1206 __in uint32_t count) 1207{ 1208 efx_nic_cfg_t *encp = &enp->en_nic_cfg; 1209 ef10_filter_table_t *table = enp->en_filter.ef_ef10_filter_table; 1210 efx_filter_flags_t filter_flags; 1211 unsigned int i; 1212 efx_rc_t all_unicst_rc = 0; 1213 efx_rc_t all_mulcst_rc = 0; 1214 efx_rc_t rc; 1215 1216 if (table->eft_default_rxq == NULL) { 1217 /* 1218 * Filters direct traffic to the default RXQ, and so cannot be 1219 * inserted until it is available. Any currently configured 1220 * filters must be removed (ignore errors in case the MC 1221 * has rebooted, which removes hardware filters). 1222 */ 1223 for (i = 0; i < table->eft_unicst_filter_count; i++) { 1224 (void) ef10_filter_delete_internal(enp, 1225 table->eft_unicst_filter_indexes[i]); 1226 } 1227 table->eft_unicst_filter_count = 0; 1228 1229 for (i = 0; i < table->eft_mulcst_filter_count; i++) { 1230 (void) ef10_filter_delete_internal(enp, 1231 table->eft_mulcst_filter_indexes[i]); 1232 } 1233 table->eft_mulcst_filter_count = 0; 1234 1235 return (0); 1236 } 1237 1238 if (table->eft_using_rss) 1239 filter_flags = EFX_FILTER_FLAG_RX_RSS; 1240 else 1241 filter_flags = 0; 1242 1243 /* Mark old filters which may need to be removed */ 1244 for (i = 0; i < table->eft_unicst_filter_count; i++) { 1245 ef10_filter_set_entry_auto_old(table, 1246 table->eft_unicst_filter_indexes[i]); 1247 } 1248 for (i = 0; i < table->eft_mulcst_filter_count; i++) { 1249 ef10_filter_set_entry_auto_old(table, 1250 table->eft_mulcst_filter_indexes[i]); 1251 } 1252 1253 /* 1254 * Insert or renew unicast filters. 1255 * 1256 * Frimware does not perform chaining on unicast filters. As traffic is 1257 * therefore only delivered to the first matching filter, we should 1258 * always insert the specific filter for our MAC address, to try and 1259 * ensure we get that traffic. 1260 * 1261 * (If the filter for our MAC address has already been inserted by 1262 * another function, we won't receive traffic sent to us, even if we 1263 * insert a unicast mismatch filter. To prevent traffic stealing, this 1264 * therefore relies on the privilege model only allowing functions to 1265 * insert filters for their own MAC address unless explicitly given 1266 * additional privileges by the user. This also means that, even on a 1267 * priviliged function, inserting a unicast mismatch filter may not 1268 * catch all traffic in multi PCI function scenarios.) 1269 */ 1270 table->eft_unicst_filter_count = 0; 1271 rc = ef10_filter_insert_unicast(enp, mac_addr, filter_flags); 1272 if (all_unicst || (rc != 0)) { 1273 all_unicst_rc = ef10_filter_insert_all_unicast(enp, 1274 filter_flags); 1275 if ((rc != 0) && (all_unicst_rc != 0)) 1276 goto fail1; 1277 } 1278 1279 /* 1280 * WORKAROUND_BUG26807 controls firmware support for chained multicast 1281 * filters, and can only be enabled or disabled when the hardware filter 1282 * table is empty. 1283 * 1284 * Chained multicast filters require support from the datapath firmware, 1285 * and may not be available (e.g. low-latency variants or old Huntington 1286 * firmware). 1287 * 1288 * Firmware will reset (FLR) functions which have inserted filters in 1289 * the hardware filter table when the workaround is enabled/disabled. 1290 * Functions without any hardware filters are not reset. 1291 * 1292 * Re-check if the workaround is enabled after adding unicast hardware 1293 * filters. This ensures that encp->enc_bug26807_workaround matches the 1294 * firmware state, and that later changes to enable/disable the 1295 * workaround will result in this function seeing a reset (FLR). 1296 * 1297 * In common-code drivers, we only support multiple PCI function 1298 * scenarios with firmware that supports multicast chaining, so we can 1299 * assume it is enabled for such cases and hence simplify the filter 1300 * insertion logic. Firmware that does not support multicast chaining 1301 * does not support multiple PCI function configurations either, so 1302 * filter insertion is much simpler and the same strategies can still be 1303 * used. 1304 */ 1305 if ((rc = ef10_filter_get_workarounds(enp)) != 0) 1306 goto fail2; 1307 1308 if ((table->eft_using_all_mulcst != all_mulcst) && 1309 (encp->enc_bug26807_workaround == B_TRUE)) { 1310 /* 1311 * Multicast filter chaining is enabled, so traffic that matches 1312 * more than one multicast filter will be replicated and 1313 * delivered to multiple recipients. To avoid this duplicate 1314 * delivery, remove old multicast filters before inserting new 1315 * multicast filters. 1316 */ 1317 ef10_filter_remove_old(enp); 1318 } 1319 1320 /* Insert or renew multicast filters */ 1321 if (all_mulcst == B_TRUE) { 1322 /* 1323 * Insert the all multicast filter. If that fails, try to insert 1324 * all of our multicast filters (but without rollback on 1325 * failure). 1326 */ 1327 all_mulcst_rc = ef10_filter_insert_all_multicast(enp, 1328 filter_flags); 1329 if (all_mulcst_rc != 0) { 1330 rc = ef10_filter_insert_multicast_list(enp, B_TRUE, 1331 brdcst, addrs, count, filter_flags, B_FALSE); 1332 if (rc != 0) 1333 goto fail3; 1334 } 1335 } else { 1336 /* 1337 * Insert filters for multicast addresses. 1338 * If any insertion fails, then rollback and try to insert the 1339 * all multicast filter instead. 1340 * If that also fails, try to insert all of the multicast 1341 * filters (but without rollback on failure). 1342 */ 1343 rc = ef10_filter_insert_multicast_list(enp, mulcst, brdcst, 1344 addrs, count, filter_flags, B_TRUE); 1345 if (rc != 0) { 1346 if ((table->eft_using_all_mulcst == B_FALSE) && 1347 (encp->enc_bug26807_workaround == B_TRUE)) { 1348 /* 1349 * Multicast filter chaining is on, so remove 1350 * old filters before inserting the multicast 1351 * all filter to avoid duplicate delivery caused 1352 * by packets matching multiple filters. 1353 */ 1354 ef10_filter_remove_old(enp); 1355 } 1356 1357 rc = ef10_filter_insert_all_multicast(enp, 1358 filter_flags); 1359 if (rc != 0) { 1360 rc = ef10_filter_insert_multicast_list(enp, 1361 mulcst, brdcst, 1362 addrs, count, filter_flags, B_FALSE); 1363 if (rc != 0) 1364 goto fail4; 1365 } 1366 } 1367 } 1368 1369 /* Remove old filters which were not renewed */ 1370 ef10_filter_remove_old(enp); 1371 1372 /* report if any optional flags were rejected */ 1373 if (((all_unicst != B_FALSE) && (all_unicst_rc != 0)) || 1374 ((all_mulcst != B_FALSE) && (all_mulcst_rc != 0))) { 1375 rc = ENOTSUP; 1376 } 1377 1378 return (rc); 1379 1380fail4: 1381 EFSYS_PROBE(fail4); 1382fail3: 1383 EFSYS_PROBE(fail3); 1384fail2: 1385 EFSYS_PROBE(fail2); 1386fail1: 1387 EFSYS_PROBE1(fail1, efx_rc_t, rc); 1388 1389 /* Clear auto old flags */ 1390 for (i = 0; i < EFX_ARRAY_SIZE(table->eft_entry); i++) { 1391 if (ef10_filter_entry_is_auto_old(table, i)) { 1392 ef10_filter_set_entry_not_auto_old(table, i); 1393 } 1394 } 1395 1396 return (rc); 1397} 1398 1399 void 1400ef10_filter_get_default_rxq( 1401 __in efx_nic_t *enp, 1402 __out efx_rxq_t **erpp, 1403 __out boolean_t *using_rss) 1404{ 1405 ef10_filter_table_t *table = enp->en_filter.ef_ef10_filter_table; 1406 1407 *erpp = table->eft_default_rxq; 1408 *using_rss = table->eft_using_rss; 1409} 1410 1411 1412 void 1413ef10_filter_default_rxq_set( 1414 __in efx_nic_t *enp, 1415 __in efx_rxq_t *erp, 1416 __in boolean_t using_rss) 1417{ 1418 ef10_filter_table_t *table = enp->en_filter.ef_ef10_filter_table; 1419 1420#if EFSYS_OPT_RX_SCALE 1421 EFSYS_ASSERT((using_rss == B_FALSE) || 1422 (enp->en_rss_context != EF10_RSS_CONTEXT_INVALID)); 1423 table->eft_using_rss = using_rss; 1424#else 1425 EFSYS_ASSERT(using_rss == B_FALSE); 1426 table->eft_using_rss = B_FALSE; 1427#endif 1428 table->eft_default_rxq = erp; 1429} 1430 1431 void 1432ef10_filter_default_rxq_clear( 1433 __in efx_nic_t *enp) 1434{ 1435 ef10_filter_table_t *table = enp->en_filter.ef_ef10_filter_table; 1436 1437 table->eft_default_rxq = NULL; 1438 table->eft_using_rss = B_FALSE; 1439} 1440 1441 1442#endif /* EFSYS_OPT_FILTER */ 1443 1444#endif /* EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD */ 1445