1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright 2020, NXP Semiconductors 3 */ 4 #include <net/tc_act/tc_gate.h> 5 #include <linux/dsa/8021q.h> 6 #include "sja1105_vl.h" 7 8 #define SJA1105_SIZE_VL_STATUS 8 9 10 /* Insert into the global gate list, sorted by gate action time. */ 11 static int sja1105_insert_gate_entry(struct sja1105_gating_config *gating_cfg, 12 struct sja1105_rule *rule, 13 u8 gate_state, s64 entry_time, 14 struct netlink_ext_ack *extack) 15 { 16 struct sja1105_gate_entry *e; 17 int rc; 18 19 e = kzalloc(sizeof(*e), GFP_KERNEL); 20 if (!e) 21 return -ENOMEM; 22 23 e->rule = rule; 24 e->gate_state = gate_state; 25 e->interval = entry_time; 26 27 if (list_empty(&gating_cfg->entries)) { 28 list_add(&e->list, &gating_cfg->entries); 29 } else { 30 struct sja1105_gate_entry *p; 31 32 list_for_each_entry(p, &gating_cfg->entries, list) { 33 if (p->interval == e->interval) { 34 NL_SET_ERR_MSG_MOD(extack, 35 "Gate conflict"); 36 rc = -EBUSY; 37 goto err; 38 } 39 40 if (e->interval < p->interval) 41 break; 42 } 43 list_add(&e->list, p->list.prev); 44 } 45 46 gating_cfg->num_entries++; 47 48 return 0; 49 err: 50 kfree(e); 51 return rc; 52 } 53 54 /* The gate entries contain absolute times in their e->interval field. Convert 55 * that to proper intervals (i.e. "0, 5, 10, 15" to "5, 5, 5, 5"). 56 */ 57 static void 58 sja1105_gating_cfg_time_to_interval(struct sja1105_gating_config *gating_cfg, 59 u64 cycle_time) 60 { 61 struct sja1105_gate_entry *last_e; 62 struct sja1105_gate_entry *e; 63 struct list_head *prev; 64 65 list_for_each_entry(e, &gating_cfg->entries, list) { 66 struct sja1105_gate_entry *p; 67 68 prev = e->list.prev; 69 70 if (prev == &gating_cfg->entries) 71 continue; 72 73 p = list_entry(prev, struct sja1105_gate_entry, list); 74 p->interval = e->interval - p->interval; 75 } 76 last_e = list_last_entry(&gating_cfg->entries, 77 struct sja1105_gate_entry, list); 78 last_e->interval = cycle_time - last_e->interval; 79 } 80 81 static void sja1105_free_gating_config(struct sja1105_gating_config *gating_cfg) 82 { 83 struct sja1105_gate_entry *e, *n; 84 85 list_for_each_entry_safe(e, n, &gating_cfg->entries, list) { 86 list_del(&e->list); 87 kfree(e); 88 } 89 } 90 91 static int sja1105_compose_gating_subschedule(struct sja1105_private *priv, 92 struct netlink_ext_ack *extack) 93 { 94 struct sja1105_gating_config *gating_cfg = &priv->tas_data.gating_cfg; 95 struct sja1105_rule *rule; 96 s64 max_cycle_time = 0; 97 s64 its_base_time = 0; 98 int i, rc = 0; 99 100 sja1105_free_gating_config(gating_cfg); 101 102 list_for_each_entry(rule, &priv->flow_block.rules, list) { 103 if (rule->type != SJA1105_RULE_VL) 104 continue; 105 if (rule->vl.type != SJA1105_VL_TIME_TRIGGERED) 106 continue; 107 108 if (max_cycle_time < rule->vl.cycle_time) { 109 max_cycle_time = rule->vl.cycle_time; 110 its_base_time = rule->vl.base_time; 111 } 112 } 113 114 if (!max_cycle_time) 115 return 0; 116 117 dev_dbg(priv->ds->dev, "max_cycle_time %lld its_base_time %lld\n", 118 max_cycle_time, its_base_time); 119 120 gating_cfg->base_time = its_base_time; 121 gating_cfg->cycle_time = max_cycle_time; 122 gating_cfg->num_entries = 0; 123 124 list_for_each_entry(rule, &priv->flow_block.rules, list) { 125 s64 time; 126 s64 rbt; 127 128 if (rule->type != SJA1105_RULE_VL) 129 continue; 130 if (rule->vl.type != SJA1105_VL_TIME_TRIGGERED) 131 continue; 132 133 /* Calculate the difference between this gating schedule's 134 * base time, and the base time of the gating schedule with the 135 * longest cycle time. We call it the relative base time (rbt). 136 */ 137 rbt = future_base_time(rule->vl.base_time, rule->vl.cycle_time, 138 its_base_time); 139 rbt -= its_base_time; 140 141 time = rbt; 142 143 for (i = 0; i < rule->vl.num_entries; i++) { 144 u8 gate_state = rule->vl.entries[i].gate_state; 145 s64 entry_time = time; 146 147 while (entry_time < max_cycle_time) { 148 rc = sja1105_insert_gate_entry(gating_cfg, rule, 149 gate_state, 150 entry_time, 151 extack); 152 if (rc) 153 goto err; 154 155 entry_time += rule->vl.cycle_time; 156 } 157 time += rule->vl.entries[i].interval; 158 } 159 } 160 161 sja1105_gating_cfg_time_to_interval(gating_cfg, max_cycle_time); 162 163 return 0; 164 err: 165 sja1105_free_gating_config(gating_cfg); 166 return rc; 167 } 168 169 /* The switch flow classification core implements TTEthernet, which 'thinks' in 170 * terms of Virtual Links (VL), a concept borrowed from ARINC 664 part 7. 171 * However it also has one other operating mode (VLLUPFORMAT=0) where it acts 172 * somewhat closer to a pre-standard implementation of IEEE 802.1Qci 173 * (Per-Stream Filtering and Policing), which is what the driver is going to be 174 * implementing. 175 * 176 * VL Lookup 177 * Key = {DMAC && VLANID +---------+ Key = { (DMAC[47:16] & VLMASK == 178 * && VLAN PCP | | VLMARKER) 179 * && INGRESS PORT} +---------+ (both fixed) 180 * (exact match, | && DMAC[15:0] == VLID 181 * all specified in rule) | (specified in rule) 182 * v && INGRESS PORT } 183 * ------------ 184 * 0 (PSFP) / \ 1 (ARINC664) 185 * +-----------/ VLLUPFORMAT \----------+ 186 * | \ (fixed) / | 187 * | \ / | 188 * 0 (forwarding) v ------------ | 189 * ------------ | 190 * / \ 1 (QoS classification) | 191 * +---/ ISCRITICAL \-----------+ | 192 * | \ (per rule) / | | 193 * | \ / VLID taken from VLID taken from 194 * v ------------ index of rule contents of rule 195 * select that matched that matched 196 * DESTPORTS | | 197 * | +---------+--------+ 198 * | | 199 * | v 200 * | VL Forwarding 201 * | (indexed by VLID) 202 * | +---------+ 203 * | +--------------| | 204 * | | select TYPE +---------+ 205 * | v 206 * | 0 (rate ------------ 1 (time 207 * | constrained) / \ triggered) 208 * | +------/ TYPE \------------+ 209 * | | \ (per VLID) / | 210 * | v \ / v 211 * | VL Policing ------------ VL Policing 212 * | (indexed by VLID) (indexed by VLID) 213 * | +---------+ +---------+ 214 * | | TYPE=0 | | TYPE=1 | 215 * | +---------+ +---------+ 216 * | select SHARINDX select SHARINDX to 217 * | to rate-limit re-enter VL Forwarding 218 * | groups of VL's with new VLID for egress 219 * | to same quota | 220 * | | | 221 * | select MAXLEN -> exceed => drop select MAXLEN -> exceed => drop 222 * | | | 223 * | v v 224 * | VL Forwarding VL Forwarding 225 * | (indexed by SHARINDX) (indexed by SHARINDX) 226 * | +---------+ +---------+ 227 * | | TYPE=0 | | TYPE=1 | 228 * | +---------+ +---------+ 229 * | select PRIORITY, select PRIORITY, 230 * | PARTITION, DESTPORTS PARTITION, DESTPORTS 231 * | | | 232 * | v v 233 * | VL Policing VL Policing 234 * | (indexed by SHARINDX) (indexed by SHARINDX) 235 * | +---------+ +---------+ 236 * | | TYPE=0 | | TYPE=1 | 237 * | +---------+ +---------+ 238 * | | | 239 * | v | 240 * | select BAG, -> exceed => drop | 241 * | JITTER v 242 * | | ---------------------------------------------- 243 * | | / Reception Window is open for this VL \ 244 * | | / (the Schedule Table executes an entry i \ 245 * | | / M <= i < N, for which these conditions hold): \ no 246 * | | +----/ \-+ 247 * | | |yes \ WINST[M] == 1 && WINSTINDEX[M] == VLID / | 248 * | | | \ WINEND[N] == 1 && WINSTINDEX[N] == VLID / | 249 * | | | \ / | 250 * | | | \ (the VL window has opened and not yet closed)/ | 251 * | | | ---------------------------------------------- | 252 * | | v v 253 * | | dispatch to DESTPORTS when the Schedule Table drop 254 * | | executes an entry i with TXEN == 1 && VLINDEX == i 255 * v v 256 * dispatch immediately to DESTPORTS 257 * 258 * The per-port classification key is always composed of {DMAC, VID, PCP} and 259 * is non-maskable. This 'looks like' the NULL stream identification function 260 * from IEEE 802.1CB clause 6, except for the extra VLAN PCP. When the switch 261 * ports operate as VLAN-unaware, we do allow the user to not specify the VLAN 262 * ID and PCP, and then the port-based defaults will be used. 263 * 264 * In TTEthernet, routing is something that needs to be done manually for each 265 * Virtual Link. So the flow action must always include one of: 266 * a. 'redirect', 'trap' or 'drop': select the egress port list 267 * Additionally, the following actions may be applied on a Virtual Link, 268 * turning it into 'critical' traffic: 269 * b. 'police': turn it into a rate-constrained VL, with bandwidth limitation 270 * given by the maximum frame length, bandwidth allocation gap (BAG) and 271 * maximum jitter. 272 * c. 'gate': turn it into a time-triggered VL, which can be only be received 273 * and forwarded according to a given schedule. 274 */ 275 276 static bool sja1105_vl_key_lower(struct sja1105_vl_lookup_entry *a, 277 struct sja1105_vl_lookup_entry *b) 278 { 279 if (a->macaddr < b->macaddr) 280 return true; 281 if (a->macaddr > b->macaddr) 282 return false; 283 if (a->vlanid < b->vlanid) 284 return true; 285 if (a->vlanid > b->vlanid) 286 return false; 287 if (a->port < b->port) 288 return true; 289 if (a->port > b->port) 290 return false; 291 if (a->vlanprior < b->vlanprior) 292 return true; 293 if (a->vlanprior > b->vlanprior) 294 return false; 295 /* Keys are equal */ 296 return false; 297 } 298 299 static int sja1105_init_virtual_links(struct sja1105_private *priv, 300 struct netlink_ext_ack *extack) 301 { 302 struct sja1105_vl_policing_entry *vl_policing; 303 struct sja1105_vl_forwarding_entry *vl_fwd; 304 struct sja1105_vl_lookup_entry *vl_lookup; 305 bool have_critical_virtual_links = false; 306 struct sja1105_table *table; 307 struct sja1105_rule *rule; 308 int num_virtual_links = 0; 309 int max_sharindx = 0; 310 int i, j, k; 311 312 /* Figure out the dimensioning of the problem */ 313 list_for_each_entry(rule, &priv->flow_block.rules, list) { 314 if (rule->type != SJA1105_RULE_VL) 315 continue; 316 /* Each VL lookup entry matches on a single ingress port */ 317 num_virtual_links += hweight_long(rule->port_mask); 318 319 if (rule->vl.type != SJA1105_VL_NONCRITICAL) 320 have_critical_virtual_links = true; 321 if (max_sharindx < rule->vl.sharindx) 322 max_sharindx = rule->vl.sharindx; 323 } 324 325 if (num_virtual_links > SJA1105_MAX_VL_LOOKUP_COUNT) { 326 NL_SET_ERR_MSG_MOD(extack, "Not enough VL entries available"); 327 return -ENOSPC; 328 } 329 330 if (max_sharindx + 1 > SJA1105_MAX_VL_LOOKUP_COUNT) { 331 NL_SET_ERR_MSG_MOD(extack, "Policer index out of range"); 332 return -ENOSPC; 333 } 334 335 max_sharindx = max_t(int, num_virtual_links, max_sharindx) + 1; 336 337 /* Discard previous VL Lookup Table */ 338 table = &priv->static_config.tables[BLK_IDX_VL_LOOKUP]; 339 if (table->entry_count) { 340 kfree(table->entries); 341 table->entry_count = 0; 342 } 343 344 /* Discard previous VL Policing Table */ 345 table = &priv->static_config.tables[BLK_IDX_VL_POLICING]; 346 if (table->entry_count) { 347 kfree(table->entries); 348 table->entry_count = 0; 349 } 350 351 /* Discard previous VL Forwarding Table */ 352 table = &priv->static_config.tables[BLK_IDX_VL_FORWARDING]; 353 if (table->entry_count) { 354 kfree(table->entries); 355 table->entry_count = 0; 356 } 357 358 /* Discard previous VL Forwarding Parameters Table */ 359 table = &priv->static_config.tables[BLK_IDX_VL_FORWARDING_PARAMS]; 360 if (table->entry_count) { 361 kfree(table->entries); 362 table->entry_count = 0; 363 } 364 365 /* Nothing to do */ 366 if (!num_virtual_links) 367 return 0; 368 369 /* Pre-allocate space in the static config tables */ 370 371 /* VL Lookup Table */ 372 table = &priv->static_config.tables[BLK_IDX_VL_LOOKUP]; 373 table->entries = kcalloc(num_virtual_links, 374 table->ops->unpacked_entry_size, 375 GFP_KERNEL); 376 if (!table->entries) 377 return -ENOMEM; 378 table->entry_count = num_virtual_links; 379 vl_lookup = table->entries; 380 381 k = 0; 382 383 list_for_each_entry(rule, &priv->flow_block.rules, list) { 384 unsigned long port; 385 386 if (rule->type != SJA1105_RULE_VL) 387 continue; 388 389 for_each_set_bit(port, &rule->port_mask, SJA1105_NUM_PORTS) { 390 vl_lookup[k].format = SJA1105_VL_FORMAT_PSFP; 391 vl_lookup[k].port = port; 392 vl_lookup[k].macaddr = rule->key.vl.dmac; 393 if (rule->key.type == SJA1105_KEY_VLAN_AWARE_VL) { 394 vl_lookup[k].vlanid = rule->key.vl.vid; 395 vl_lookup[k].vlanprior = rule->key.vl.pcp; 396 } else { 397 u16 vid = dsa_8021q_rx_vid(priv->ds, port); 398 399 vl_lookup[k].vlanid = vid; 400 vl_lookup[k].vlanprior = 0; 401 } 402 /* For critical VLs, the DESTPORTS mask is taken from 403 * the VL Forwarding Table, so no point in putting it 404 * in the VL Lookup Table 405 */ 406 if (rule->vl.type == SJA1105_VL_NONCRITICAL) 407 vl_lookup[k].destports = rule->vl.destports; 408 else 409 vl_lookup[k].iscritical = true; 410 vl_lookup[k].flow_cookie = rule->cookie; 411 k++; 412 } 413 } 414 415 /* UM10944.pdf chapter 4.2.3 VL Lookup table: 416 * "the entries in the VL Lookup table must be sorted in ascending 417 * order (i.e. the smallest value must be loaded first) according to 418 * the following sort order: MACADDR, VLANID, PORT, VLANPRIOR." 419 */ 420 for (i = 0; i < num_virtual_links; i++) { 421 struct sja1105_vl_lookup_entry *a = &vl_lookup[i]; 422 423 for (j = i + 1; j < num_virtual_links; j++) { 424 struct sja1105_vl_lookup_entry *b = &vl_lookup[j]; 425 426 if (sja1105_vl_key_lower(b, a)) { 427 struct sja1105_vl_lookup_entry tmp = *a; 428 429 *a = *b; 430 *b = tmp; 431 } 432 } 433 } 434 435 if (!have_critical_virtual_links) 436 return 0; 437 438 /* VL Policing Table */ 439 table = &priv->static_config.tables[BLK_IDX_VL_POLICING]; 440 table->entries = kcalloc(max_sharindx, table->ops->unpacked_entry_size, 441 GFP_KERNEL); 442 if (!table->entries) 443 return -ENOMEM; 444 table->entry_count = max_sharindx; 445 vl_policing = table->entries; 446 447 /* VL Forwarding Table */ 448 table = &priv->static_config.tables[BLK_IDX_VL_FORWARDING]; 449 table->entries = kcalloc(max_sharindx, table->ops->unpacked_entry_size, 450 GFP_KERNEL); 451 if (!table->entries) 452 return -ENOMEM; 453 table->entry_count = max_sharindx; 454 vl_fwd = table->entries; 455 456 /* VL Forwarding Parameters Table */ 457 table = &priv->static_config.tables[BLK_IDX_VL_FORWARDING_PARAMS]; 458 table->entries = kcalloc(1, table->ops->unpacked_entry_size, 459 GFP_KERNEL); 460 if (!table->entries) 461 return -ENOMEM; 462 table->entry_count = 1; 463 464 for (i = 0; i < num_virtual_links; i++) { 465 unsigned long cookie = vl_lookup[i].flow_cookie; 466 struct sja1105_rule *rule = sja1105_rule_find(priv, cookie); 467 468 if (rule->vl.type == SJA1105_VL_NONCRITICAL) 469 continue; 470 if (rule->vl.type == SJA1105_VL_TIME_TRIGGERED) { 471 int sharindx = rule->vl.sharindx; 472 473 vl_policing[i].type = 1; 474 vl_policing[i].sharindx = sharindx; 475 vl_policing[i].maxlen = rule->vl.maxlen; 476 vl_policing[sharindx].type = 1; 477 478 vl_fwd[i].type = 1; 479 vl_fwd[sharindx].type = 1; 480 vl_fwd[sharindx].priority = rule->vl.ipv; 481 vl_fwd[sharindx].partition = 0; 482 vl_fwd[sharindx].destports = rule->vl.destports; 483 } 484 } 485 486 sja1105_frame_memory_partitioning(priv); 487 488 return 0; 489 } 490 491 int sja1105_vl_redirect(struct sja1105_private *priv, int port, 492 struct netlink_ext_ack *extack, unsigned long cookie, 493 struct sja1105_key *key, unsigned long destports, 494 bool append) 495 { 496 struct sja1105_rule *rule = sja1105_rule_find(priv, cookie); 497 int rc; 498 499 if (priv->vlan_state == SJA1105_VLAN_UNAWARE && 500 key->type != SJA1105_KEY_VLAN_UNAWARE_VL) { 501 NL_SET_ERR_MSG_MOD(extack, 502 "Can only redirect based on DMAC"); 503 return -EOPNOTSUPP; 504 } else if ((priv->vlan_state == SJA1105_VLAN_BEST_EFFORT || 505 priv->vlan_state == SJA1105_VLAN_FILTERING_FULL) && 506 key->type != SJA1105_KEY_VLAN_AWARE_VL) { 507 NL_SET_ERR_MSG_MOD(extack, 508 "Can only redirect based on {DMAC, VID, PCP}"); 509 return -EOPNOTSUPP; 510 } 511 512 if (!rule) { 513 rule = kzalloc(sizeof(*rule), GFP_KERNEL); 514 if (!rule) 515 return -ENOMEM; 516 517 rule->cookie = cookie; 518 rule->type = SJA1105_RULE_VL; 519 rule->key = *key; 520 list_add(&rule->list, &priv->flow_block.rules); 521 } 522 523 rule->port_mask |= BIT(port); 524 if (append) 525 rule->vl.destports |= destports; 526 else 527 rule->vl.destports = destports; 528 529 rc = sja1105_init_virtual_links(priv, extack); 530 if (rc) { 531 rule->port_mask &= ~BIT(port); 532 if (!rule->port_mask) { 533 list_del(&rule->list); 534 kfree(rule); 535 } 536 } 537 538 return rc; 539 } 540 541 int sja1105_vl_delete(struct sja1105_private *priv, int port, 542 struct sja1105_rule *rule, struct netlink_ext_ack *extack) 543 { 544 int rc; 545 546 rule->port_mask &= ~BIT(port); 547 if (!rule->port_mask) { 548 list_del(&rule->list); 549 kfree(rule); 550 } 551 552 rc = sja1105_compose_gating_subschedule(priv, extack); 553 if (rc) 554 return rc; 555 556 rc = sja1105_init_virtual_links(priv, extack); 557 if (rc) 558 return rc; 559 560 rc = sja1105_init_scheduling(priv); 561 if (rc < 0) 562 return rc; 563 564 return sja1105_static_config_reload(priv, SJA1105_VIRTUAL_LINKS); 565 } 566 567 int sja1105_vl_gate(struct sja1105_private *priv, int port, 568 struct netlink_ext_ack *extack, unsigned long cookie, 569 struct sja1105_key *key, u32 index, s32 prio, 570 u64 base_time, u64 cycle_time, u64 cycle_time_ext, 571 u32 num_entries, struct action_gate_entry *entries) 572 { 573 struct sja1105_rule *rule = sja1105_rule_find(priv, cookie); 574 int ipv = -1; 575 int i, rc; 576 s32 rem; 577 578 if (cycle_time_ext) { 579 NL_SET_ERR_MSG_MOD(extack, 580 "Cycle time extension not supported"); 581 return -EOPNOTSUPP; 582 } 583 584 div_s64_rem(base_time, sja1105_delta_to_ns(1), &rem); 585 if (rem) { 586 NL_SET_ERR_MSG_MOD(extack, 587 "Base time must be multiple of 200 ns"); 588 return -ERANGE; 589 } 590 591 div_s64_rem(cycle_time, sja1105_delta_to_ns(1), &rem); 592 if (rem) { 593 NL_SET_ERR_MSG_MOD(extack, 594 "Cycle time must be multiple of 200 ns"); 595 return -ERANGE; 596 } 597 598 if (priv->vlan_state == SJA1105_VLAN_UNAWARE && 599 key->type != SJA1105_KEY_VLAN_UNAWARE_VL) { 600 NL_SET_ERR_MSG_MOD(extack, 601 "Can only gate based on DMAC"); 602 return -EOPNOTSUPP; 603 } else if ((priv->vlan_state == SJA1105_VLAN_BEST_EFFORT || 604 priv->vlan_state == SJA1105_VLAN_FILTERING_FULL) && 605 key->type != SJA1105_KEY_VLAN_AWARE_VL) { 606 NL_SET_ERR_MSG_MOD(extack, 607 "Can only gate based on {DMAC, VID, PCP}"); 608 return -EOPNOTSUPP; 609 } 610 611 if (!rule) { 612 rule = kzalloc(sizeof(*rule), GFP_KERNEL); 613 if (!rule) 614 return -ENOMEM; 615 616 list_add(&rule->list, &priv->flow_block.rules); 617 rule->cookie = cookie; 618 rule->type = SJA1105_RULE_VL; 619 rule->key = *key; 620 rule->vl.type = SJA1105_VL_TIME_TRIGGERED; 621 rule->vl.sharindx = index; 622 rule->vl.base_time = base_time; 623 rule->vl.cycle_time = cycle_time; 624 rule->vl.num_entries = num_entries; 625 rule->vl.entries = kcalloc(num_entries, 626 sizeof(struct action_gate_entry), 627 GFP_KERNEL); 628 if (!rule->vl.entries) { 629 rc = -ENOMEM; 630 goto out; 631 } 632 633 for (i = 0; i < num_entries; i++) { 634 div_s64_rem(entries[i].interval, 635 sja1105_delta_to_ns(1), &rem); 636 if (rem) { 637 NL_SET_ERR_MSG_MOD(extack, 638 "Interval must be multiple of 200 ns"); 639 rc = -ERANGE; 640 goto out; 641 } 642 643 if (!entries[i].interval) { 644 NL_SET_ERR_MSG_MOD(extack, 645 "Interval cannot be zero"); 646 rc = -ERANGE; 647 goto out; 648 } 649 650 if (ns_to_sja1105_delta(entries[i].interval) > 651 SJA1105_TAS_MAX_DELTA) { 652 NL_SET_ERR_MSG_MOD(extack, 653 "Maximum interval is 52 ms"); 654 rc = -ERANGE; 655 goto out; 656 } 657 658 if (entries[i].maxoctets != -1) { 659 NL_SET_ERR_MSG_MOD(extack, 660 "Cannot offload IntervalOctetMax"); 661 rc = -EOPNOTSUPP; 662 goto out; 663 } 664 665 if (ipv == -1) { 666 ipv = entries[i].ipv; 667 } else if (ipv != entries[i].ipv) { 668 NL_SET_ERR_MSG_MOD(extack, 669 "Only support a single IPV per VL"); 670 rc = -EOPNOTSUPP; 671 goto out; 672 } 673 674 rule->vl.entries[i] = entries[i]; 675 } 676 677 if (ipv == -1) { 678 if (key->type == SJA1105_KEY_VLAN_AWARE_VL) 679 ipv = key->vl.pcp; 680 else 681 ipv = 0; 682 } 683 684 /* TODO: support per-flow MTU */ 685 rule->vl.maxlen = VLAN_ETH_FRAME_LEN + ETH_FCS_LEN; 686 rule->vl.ipv = ipv; 687 } 688 689 rule->port_mask |= BIT(port); 690 691 rc = sja1105_compose_gating_subschedule(priv, extack); 692 if (rc) 693 goto out; 694 695 rc = sja1105_init_virtual_links(priv, extack); 696 if (rc) 697 goto out; 698 699 if (sja1105_gating_check_conflicts(priv, -1, extack)) { 700 NL_SET_ERR_MSG_MOD(extack, "Conflict with tc-taprio schedule"); 701 rc = -ERANGE; 702 goto out; 703 } 704 705 out: 706 if (rc) { 707 rule->port_mask &= ~BIT(port); 708 if (!rule->port_mask) { 709 list_del(&rule->list); 710 kfree(rule->vl.entries); 711 kfree(rule); 712 } 713 } 714 715 return rc; 716 } 717 718 static int sja1105_find_vlid(struct sja1105_private *priv, int port, 719 struct sja1105_key *key) 720 { 721 struct sja1105_vl_lookup_entry *vl_lookup; 722 struct sja1105_table *table; 723 int i; 724 725 if (WARN_ON(key->type != SJA1105_KEY_VLAN_AWARE_VL && 726 key->type != SJA1105_KEY_VLAN_UNAWARE_VL)) 727 return -1; 728 729 table = &priv->static_config.tables[BLK_IDX_VL_LOOKUP]; 730 vl_lookup = table->entries; 731 732 for (i = 0; i < table->entry_count; i++) { 733 if (key->type == SJA1105_KEY_VLAN_AWARE_VL) { 734 if (vl_lookup[i].port == port && 735 vl_lookup[i].macaddr == key->vl.dmac && 736 vl_lookup[i].vlanid == key->vl.vid && 737 vl_lookup[i].vlanprior == key->vl.pcp) 738 return i; 739 } else { 740 if (vl_lookup[i].port == port && 741 vl_lookup[i].macaddr == key->vl.dmac) 742 return i; 743 } 744 } 745 746 return -1; 747 } 748 749 int sja1105_vl_stats(struct sja1105_private *priv, int port, 750 struct sja1105_rule *rule, struct flow_stats *stats, 751 struct netlink_ext_ack *extack) 752 { 753 const struct sja1105_regs *regs = priv->info->regs; 754 u8 buf[SJA1105_SIZE_VL_STATUS] = {0}; 755 u64 unreleased; 756 u64 timingerr; 757 u64 lengtherr; 758 int vlid, rc; 759 u64 pkts; 760 761 if (rule->vl.type != SJA1105_VL_TIME_TRIGGERED) 762 return 0; 763 764 vlid = sja1105_find_vlid(priv, port, &rule->key); 765 if (vlid < 0) 766 return 0; 767 768 rc = sja1105_xfer_buf(priv, SPI_READ, regs->vl_status + 2 * vlid, buf, 769 SJA1105_SIZE_VL_STATUS); 770 if (rc) { 771 NL_SET_ERR_MSG_MOD(extack, "SPI access failed"); 772 return rc; 773 } 774 775 sja1105_unpack(buf, &timingerr, 31, 16, SJA1105_SIZE_VL_STATUS); 776 sja1105_unpack(buf, &unreleased, 15, 0, SJA1105_SIZE_VL_STATUS); 777 sja1105_unpack(buf, &lengtherr, 47, 32, SJA1105_SIZE_VL_STATUS); 778 779 pkts = timingerr + unreleased + lengtherr; 780 781 flow_stats_update(stats, 0, pkts - rule->vl.stats.pkts, 0, 782 jiffies - rule->vl.stats.lastused, 783 FLOW_ACTION_HW_STATS_IMMEDIATE); 784 785 rule->vl.stats.pkts = pkts; 786 rule->vl.stats.lastused = jiffies; 787 788 return 0; 789 } 790