1 // SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) 2 /* Copyright 2019 NXP */ 3 4 #include "enetc.h" 5 6 #include <net/pkt_sched.h> 7 #include <linux/math64.h> 8 #include <linux/refcount.h> 9 #include <net/pkt_cls.h> 10 #include <net/tc_act/tc_gate.h> 11 12 static u16 enetc_get_max_gcl_len(struct enetc_hw *hw) 13 { 14 return enetc_rd(hw, ENETC_QBV_PTGCAPR_OFFSET) 15 & ENETC_QBV_MAX_GCL_LEN_MASK; 16 } 17 18 void enetc_sched_speed_set(struct enetc_ndev_priv *priv, int speed) 19 { 20 u32 old_speed = priv->speed; 21 u32 pspeed; 22 23 if (speed == old_speed) 24 return; 25 26 switch (speed) { 27 case SPEED_1000: 28 pspeed = ENETC_PMR_PSPEED_1000M; 29 break; 30 case SPEED_2500: 31 pspeed = ENETC_PMR_PSPEED_2500M; 32 break; 33 case SPEED_100: 34 pspeed = ENETC_PMR_PSPEED_100M; 35 break; 36 case SPEED_10: 37 default: 38 pspeed = ENETC_PMR_PSPEED_10M; 39 } 40 41 priv->speed = speed; 42 enetc_port_wr(&priv->si->hw, ENETC_PMR, 43 (enetc_port_rd(&priv->si->hw, ENETC_PMR) 44 & (~ENETC_PMR_PSPEED_MASK)) 45 | pspeed); 46 } 47 48 static int enetc_setup_taprio(struct net_device *ndev, 49 struct tc_taprio_qopt_offload *admin_conf) 50 { 51 struct enetc_ndev_priv *priv = netdev_priv(ndev); 52 struct enetc_cbd cbd = {.cmd = 0}; 53 struct tgs_gcl_conf *gcl_config; 54 struct tgs_gcl_data *gcl_data; 55 struct gce *gce; 56 dma_addr_t dma; 57 u16 data_size; 58 u16 gcl_len; 59 u32 tge; 60 int err; 61 int i; 62 63 if (admin_conf->num_entries > enetc_get_max_gcl_len(&priv->si->hw)) 64 return -EINVAL; 65 gcl_len = admin_conf->num_entries; 66 67 tge = enetc_rd(&priv->si->hw, ENETC_QBV_PTGCR_OFFSET); 68 if (!admin_conf->enable) { 69 enetc_wr(&priv->si->hw, 70 ENETC_QBV_PTGCR_OFFSET, 71 tge & (~ENETC_QBV_TGE)); 72 return 0; 73 } 74 75 if (admin_conf->cycle_time > U32_MAX || 76 admin_conf->cycle_time_extension > U32_MAX) 77 return -EINVAL; 78 79 /* Configure the (administrative) gate control list using the 80 * control BD descriptor. 81 */ 82 gcl_config = &cbd.gcl_conf; 83 84 data_size = struct_size(gcl_data, entry, gcl_len); 85 gcl_data = kzalloc(data_size, __GFP_DMA | GFP_KERNEL); 86 if (!gcl_data) 87 return -ENOMEM; 88 89 gce = (struct gce *)(gcl_data + 1); 90 91 /* Set all gates open as default */ 92 gcl_config->atc = 0xff; 93 gcl_config->acl_len = cpu_to_le16(gcl_len); 94 95 gcl_data->btl = cpu_to_le32(lower_32_bits(admin_conf->base_time)); 96 gcl_data->bth = cpu_to_le32(upper_32_bits(admin_conf->base_time)); 97 gcl_data->ct = cpu_to_le32(admin_conf->cycle_time); 98 gcl_data->cte = cpu_to_le32(admin_conf->cycle_time_extension); 99 100 for (i = 0; i < gcl_len; i++) { 101 struct tc_taprio_sched_entry *temp_entry; 102 struct gce *temp_gce = gce + i; 103 104 temp_entry = &admin_conf->entries[i]; 105 106 temp_gce->gate = (u8)temp_entry->gate_mask; 107 temp_gce->period = cpu_to_le32(temp_entry->interval); 108 } 109 110 cbd.length = cpu_to_le16(data_size); 111 cbd.status_flags = 0; 112 113 dma = dma_map_single(&priv->si->pdev->dev, gcl_data, 114 data_size, DMA_TO_DEVICE); 115 if (dma_mapping_error(&priv->si->pdev->dev, dma)) { 116 netdev_err(priv->si->ndev, "DMA mapping failed!\n"); 117 kfree(gcl_data); 118 return -ENOMEM; 119 } 120 121 cbd.addr[0] = lower_32_bits(dma); 122 cbd.addr[1] = upper_32_bits(dma); 123 cbd.cls = BDCR_CMD_PORT_GCL; 124 cbd.status_flags = 0; 125 126 enetc_wr(&priv->si->hw, ENETC_QBV_PTGCR_OFFSET, 127 tge | ENETC_QBV_TGE); 128 129 err = enetc_send_cmd(priv->si, &cbd); 130 if (err) 131 enetc_wr(&priv->si->hw, 132 ENETC_QBV_PTGCR_OFFSET, 133 tge & (~ENETC_QBV_TGE)); 134 135 dma_unmap_single(&priv->si->pdev->dev, dma, data_size, DMA_TO_DEVICE); 136 kfree(gcl_data); 137 138 return err; 139 } 140 141 int enetc_setup_tc_taprio(struct net_device *ndev, void *type_data) 142 { 143 struct tc_taprio_qopt_offload *taprio = type_data; 144 struct enetc_ndev_priv *priv = netdev_priv(ndev); 145 int err; 146 int i; 147 148 /* TSD and Qbv are mutually exclusive in hardware */ 149 for (i = 0; i < priv->num_tx_rings; i++) 150 if (priv->tx_ring[i]->tsd_enable) 151 return -EBUSY; 152 153 for (i = 0; i < priv->num_tx_rings; i++) 154 enetc_set_bdr_prio(&priv->si->hw, 155 priv->tx_ring[i]->index, 156 taprio->enable ? i : 0); 157 158 err = enetc_setup_taprio(ndev, taprio); 159 160 if (err) 161 for (i = 0; i < priv->num_tx_rings; i++) 162 enetc_set_bdr_prio(&priv->si->hw, 163 priv->tx_ring[i]->index, 164 taprio->enable ? 0 : i); 165 166 return err; 167 } 168 169 static u32 enetc_get_cbs_enable(struct enetc_hw *hw, u8 tc) 170 { 171 return enetc_port_rd(hw, ENETC_PTCCBSR0(tc)) & ENETC_CBSE; 172 } 173 174 static u8 enetc_get_cbs_bw(struct enetc_hw *hw, u8 tc) 175 { 176 return enetc_port_rd(hw, ENETC_PTCCBSR0(tc)) & ENETC_CBS_BW_MASK; 177 } 178 179 int enetc_setup_tc_cbs(struct net_device *ndev, void *type_data) 180 { 181 struct enetc_ndev_priv *priv = netdev_priv(ndev); 182 struct tc_cbs_qopt_offload *cbs = type_data; 183 u32 port_transmit_rate = priv->speed; 184 u8 tc_nums = netdev_get_num_tc(ndev); 185 struct enetc_si *si = priv->si; 186 u32 hi_credit_bit, hi_credit_reg; 187 u32 max_interference_size; 188 u32 port_frame_max_size; 189 u8 tc = cbs->queue; 190 u8 prio_top, prio_next; 191 int bw_sum = 0; 192 u8 bw; 193 194 prio_top = netdev_get_prio_tc_map(ndev, tc_nums - 1); 195 prio_next = netdev_get_prio_tc_map(ndev, tc_nums - 2); 196 197 /* Support highest prio and second prio tc in cbs mode */ 198 if (tc != prio_top && tc != prio_next) 199 return -EOPNOTSUPP; 200 201 if (!cbs->enable) { 202 /* Make sure the other TC that are numerically 203 * lower than this TC have been disabled. 204 */ 205 if (tc == prio_top && 206 enetc_get_cbs_enable(&si->hw, prio_next)) { 207 dev_err(&ndev->dev, 208 "Disable TC%d before disable TC%d\n", 209 prio_next, tc); 210 return -EINVAL; 211 } 212 213 enetc_port_wr(&si->hw, ENETC_PTCCBSR1(tc), 0); 214 enetc_port_wr(&si->hw, ENETC_PTCCBSR0(tc), 0); 215 216 return 0; 217 } 218 219 if (cbs->idleslope - cbs->sendslope != port_transmit_rate * 1000L || 220 cbs->idleslope < 0 || cbs->sendslope > 0) 221 return -EOPNOTSUPP; 222 223 port_frame_max_size = ndev->mtu + VLAN_ETH_HLEN + ETH_FCS_LEN; 224 225 bw = cbs->idleslope / (port_transmit_rate * 10UL); 226 227 /* Make sure the other TC that are numerically 228 * higher than this TC have been enabled. 229 */ 230 if (tc == prio_next) { 231 if (!enetc_get_cbs_enable(&si->hw, prio_top)) { 232 dev_err(&ndev->dev, 233 "Enable TC%d first before enable TC%d\n", 234 prio_top, prio_next); 235 return -EINVAL; 236 } 237 bw_sum += enetc_get_cbs_bw(&si->hw, prio_top); 238 } 239 240 if (bw_sum + bw >= 100) { 241 dev_err(&ndev->dev, 242 "The sum of all CBS Bandwidth can't exceed 100\n"); 243 return -EINVAL; 244 } 245 246 enetc_port_rd(&si->hw, ENETC_PTCMSDUR(tc)); 247 248 /* For top prio TC, the max_interfrence_size is maxSizedFrame. 249 * 250 * For next prio TC, the max_interfrence_size is calculated as below: 251 * 252 * max_interference_size = M0 + Ma + Ra * M0 / (R0 - Ra) 253 * 254 * - RA: idleSlope for AVB Class A 255 * - R0: port transmit rate 256 * - M0: maximum sized frame for the port 257 * - MA: maximum sized frame for AVB Class A 258 */ 259 260 if (tc == prio_top) { 261 max_interference_size = port_frame_max_size * 8; 262 } else { 263 u32 m0, ma, r0, ra; 264 265 m0 = port_frame_max_size * 8; 266 ma = enetc_port_rd(&si->hw, ENETC_PTCMSDUR(prio_top)) * 8; 267 ra = enetc_get_cbs_bw(&si->hw, prio_top) * 268 port_transmit_rate * 10000ULL; 269 r0 = port_transmit_rate * 1000000ULL; 270 max_interference_size = m0 + ma + 271 (u32)div_u64((u64)ra * m0, r0 - ra); 272 } 273 274 /* hiCredit bits calculate by: 275 * 276 * maxSizedFrame * (idleSlope/portTxRate) 277 */ 278 hi_credit_bit = max_interference_size * bw / 100; 279 280 /* hiCredit bits to hiCredit register need to calculated as: 281 * 282 * (enetClockFrequency / portTransmitRate) * 100 283 */ 284 hi_credit_reg = (u32)div_u64((ENETC_CLK * 100ULL) * hi_credit_bit, 285 port_transmit_rate * 1000000ULL); 286 287 enetc_port_wr(&si->hw, ENETC_PTCCBSR1(tc), hi_credit_reg); 288 289 /* Set bw register and enable this traffic class */ 290 enetc_port_wr(&si->hw, ENETC_PTCCBSR0(tc), bw | ENETC_CBSE); 291 292 return 0; 293 } 294 295 int enetc_setup_tc_txtime(struct net_device *ndev, void *type_data) 296 { 297 struct enetc_ndev_priv *priv = netdev_priv(ndev); 298 struct tc_etf_qopt_offload *qopt = type_data; 299 u8 tc_nums = netdev_get_num_tc(ndev); 300 int tc; 301 302 if (!tc_nums) 303 return -EOPNOTSUPP; 304 305 tc = qopt->queue; 306 307 if (tc < 0 || tc >= priv->num_tx_rings) 308 return -EINVAL; 309 310 /* Do not support TXSTART and TX CSUM offload simutaniously */ 311 if (ndev->features & NETIF_F_CSUM_MASK) 312 return -EBUSY; 313 314 /* TSD and Qbv are mutually exclusive in hardware */ 315 if (enetc_rd(&priv->si->hw, ENETC_QBV_PTGCR_OFFSET) & ENETC_QBV_TGE) 316 return -EBUSY; 317 318 priv->tx_ring[tc]->tsd_enable = qopt->enable; 319 enetc_port_wr(&priv->si->hw, ENETC_PTCTSDR(tc), 320 qopt->enable ? ENETC_TSDE : 0); 321 322 return 0; 323 } 324 325 enum streamid_type { 326 STREAMID_TYPE_RESERVED = 0, 327 STREAMID_TYPE_NULL, 328 STREAMID_TYPE_SMAC, 329 }; 330 331 enum streamid_vlan_tagged { 332 STREAMID_VLAN_RESERVED = 0, 333 STREAMID_VLAN_TAGGED, 334 STREAMID_VLAN_UNTAGGED, 335 STREAMID_VLAN_ALL, 336 }; 337 338 #define ENETC_PSFP_WILDCARD -1 339 #define HANDLE_OFFSET 100 340 341 enum forward_type { 342 FILTER_ACTION_TYPE_PSFP = BIT(0), 343 FILTER_ACTION_TYPE_ACL = BIT(1), 344 FILTER_ACTION_TYPE_BOTH = GENMASK(1, 0), 345 }; 346 347 /* This is for limit output type for input actions */ 348 struct actions_fwd { 349 u64 actions; 350 u64 keys; /* include the must needed keys */ 351 enum forward_type output; 352 }; 353 354 struct psfp_streamfilter_counters { 355 u64 matching_frames_count; 356 u64 passing_frames_count; 357 u64 not_passing_frames_count; 358 u64 passing_sdu_count; 359 u64 not_passing_sdu_count; 360 u64 red_frames_count; 361 }; 362 363 struct enetc_streamid { 364 u32 index; 365 union { 366 u8 src_mac[6]; 367 u8 dst_mac[6]; 368 }; 369 u8 filtertype; 370 u16 vid; 371 u8 tagged; 372 s32 handle; 373 }; 374 375 struct enetc_psfp_filter { 376 u32 index; 377 s32 handle; 378 s8 prio; 379 u32 maxsdu; 380 u32 gate_id; 381 s32 meter_id; 382 refcount_t refcount; 383 struct hlist_node node; 384 }; 385 386 struct enetc_psfp_gate { 387 u32 index; 388 s8 init_ipv; 389 u64 basetime; 390 u64 cycletime; 391 u64 cycletimext; 392 u32 num_entries; 393 refcount_t refcount; 394 struct hlist_node node; 395 struct action_gate_entry entries[]; 396 }; 397 398 /* Only enable the green color frame now 399 * Will add eir and ebs color blind, couple flag etc when 400 * policing action add more offloading parameters 401 */ 402 struct enetc_psfp_meter { 403 u32 index; 404 u32 cir; 405 u32 cbs; 406 refcount_t refcount; 407 struct hlist_node node; 408 }; 409 410 #define ENETC_PSFP_FLAGS_FMI BIT(0) 411 412 struct enetc_stream_filter { 413 struct enetc_streamid sid; 414 u32 sfi_index; 415 u32 sgi_index; 416 u32 flags; 417 u32 fmi_index; 418 struct flow_stats stats; 419 struct hlist_node node; 420 }; 421 422 struct enetc_psfp { 423 unsigned long dev_bitmap; 424 unsigned long *psfp_sfi_bitmap; 425 struct hlist_head stream_list; 426 struct hlist_head psfp_filter_list; 427 struct hlist_head psfp_gate_list; 428 struct hlist_head psfp_meter_list; 429 spinlock_t psfp_lock; /* spinlock for the struct enetc_psfp r/w */ 430 }; 431 432 static struct actions_fwd enetc_act_fwd[] = { 433 { 434 BIT(FLOW_ACTION_GATE), 435 BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS), 436 FILTER_ACTION_TYPE_PSFP 437 }, 438 { 439 BIT(FLOW_ACTION_POLICE) | 440 BIT(FLOW_ACTION_GATE), 441 BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS), 442 FILTER_ACTION_TYPE_PSFP 443 }, 444 /* example for ACL actions */ 445 { 446 BIT(FLOW_ACTION_DROP), 447 0, 448 FILTER_ACTION_TYPE_ACL 449 } 450 }; 451 452 static struct enetc_psfp epsfp = { 453 .psfp_sfi_bitmap = NULL, 454 }; 455 456 static LIST_HEAD(enetc_block_cb_list); 457 458 static inline int enetc_get_port(struct enetc_ndev_priv *priv) 459 { 460 return priv->si->pdev->devfn & 0x7; 461 } 462 463 /* Stream Identity Entry Set Descriptor */ 464 static int enetc_streamid_hw_set(struct enetc_ndev_priv *priv, 465 struct enetc_streamid *sid, 466 u8 enable) 467 { 468 struct enetc_cbd cbd = {.cmd = 0}; 469 struct streamid_data *si_data; 470 struct streamid_conf *si_conf; 471 u16 data_size; 472 dma_addr_t dma; 473 int err; 474 475 if (sid->index >= priv->psfp_cap.max_streamid) 476 return -EINVAL; 477 478 if (sid->filtertype != STREAMID_TYPE_NULL && 479 sid->filtertype != STREAMID_TYPE_SMAC) 480 return -EOPNOTSUPP; 481 482 /* Disable operation before enable */ 483 cbd.index = cpu_to_le16((u16)sid->index); 484 cbd.cls = BDCR_CMD_STREAM_IDENTIFY; 485 cbd.status_flags = 0; 486 487 data_size = sizeof(struct streamid_data); 488 si_data = kzalloc(data_size, __GFP_DMA | GFP_KERNEL); 489 cbd.length = cpu_to_le16(data_size); 490 491 dma = dma_map_single(&priv->si->pdev->dev, si_data, 492 data_size, DMA_FROM_DEVICE); 493 if (dma_mapping_error(&priv->si->pdev->dev, dma)) { 494 netdev_err(priv->si->ndev, "DMA mapping failed!\n"); 495 kfree(si_data); 496 return -ENOMEM; 497 } 498 499 cbd.addr[0] = lower_32_bits(dma); 500 cbd.addr[1] = upper_32_bits(dma); 501 eth_broadcast_addr(si_data->dmac); 502 si_data->vid_vidm_tg = 503 cpu_to_le16(ENETC_CBDR_SID_VID_MASK 504 + ((0x3 << 14) | ENETC_CBDR_SID_VIDM)); 505 506 si_conf = &cbd.sid_set; 507 /* Only one port supported for one entry, set itself */ 508 si_conf->iports = 1 << enetc_get_port(priv); 509 si_conf->id_type = 1; 510 si_conf->oui[2] = 0x0; 511 si_conf->oui[1] = 0x80; 512 si_conf->oui[0] = 0xC2; 513 514 err = enetc_send_cmd(priv->si, &cbd); 515 if (err) 516 return -EINVAL; 517 518 if (!enable) { 519 kfree(si_data); 520 return 0; 521 } 522 523 /* Enable the entry overwrite again incase space flushed by hardware */ 524 memset(&cbd, 0, sizeof(cbd)); 525 526 cbd.index = cpu_to_le16((u16)sid->index); 527 cbd.cmd = 0; 528 cbd.cls = BDCR_CMD_STREAM_IDENTIFY; 529 cbd.status_flags = 0; 530 531 si_conf->en = 0x80; 532 si_conf->stream_handle = cpu_to_le32(sid->handle); 533 si_conf->iports = 1 << enetc_get_port(priv); 534 si_conf->id_type = sid->filtertype; 535 si_conf->oui[2] = 0x0; 536 si_conf->oui[1] = 0x80; 537 si_conf->oui[0] = 0xC2; 538 539 memset(si_data, 0, data_size); 540 541 cbd.length = cpu_to_le16(data_size); 542 543 cbd.addr[0] = lower_32_bits(dma); 544 cbd.addr[1] = upper_32_bits(dma); 545 546 /* VIDM default to be 1. 547 * VID Match. If set (b1) then the VID must match, otherwise 548 * any VID is considered a match. VIDM setting is only used 549 * when TG is set to b01. 550 */ 551 if (si_conf->id_type == STREAMID_TYPE_NULL) { 552 ether_addr_copy(si_data->dmac, sid->dst_mac); 553 si_data->vid_vidm_tg = 554 cpu_to_le16((sid->vid & ENETC_CBDR_SID_VID_MASK) + 555 ((((u16)(sid->tagged) & 0x3) << 14) 556 | ENETC_CBDR_SID_VIDM)); 557 } else if (si_conf->id_type == STREAMID_TYPE_SMAC) { 558 ether_addr_copy(si_data->smac, sid->src_mac); 559 si_data->vid_vidm_tg = 560 cpu_to_le16((sid->vid & ENETC_CBDR_SID_VID_MASK) + 561 ((((u16)(sid->tagged) & 0x3) << 14) 562 | ENETC_CBDR_SID_VIDM)); 563 } 564 565 err = enetc_send_cmd(priv->si, &cbd); 566 kfree(si_data); 567 568 return err; 569 } 570 571 /* Stream Filter Instance Set Descriptor */ 572 static int enetc_streamfilter_hw_set(struct enetc_ndev_priv *priv, 573 struct enetc_psfp_filter *sfi, 574 u8 enable) 575 { 576 struct enetc_cbd cbd = {.cmd = 0}; 577 struct sfi_conf *sfi_config; 578 579 cbd.index = cpu_to_le16(sfi->index); 580 cbd.cls = BDCR_CMD_STREAM_FILTER; 581 cbd.status_flags = 0x80; 582 cbd.length = cpu_to_le16(1); 583 584 sfi_config = &cbd.sfi_conf; 585 if (!enable) 586 goto exit; 587 588 sfi_config->en = 0x80; 589 590 if (sfi->handle >= 0) { 591 sfi_config->stream_handle = 592 cpu_to_le32(sfi->handle); 593 sfi_config->sthm |= 0x80; 594 } 595 596 sfi_config->sg_inst_table_index = cpu_to_le16(sfi->gate_id); 597 sfi_config->input_ports = 1 << enetc_get_port(priv); 598 599 /* The priority value which may be matched against the 600 * frame’s priority value to determine a match for this entry. 601 */ 602 if (sfi->prio >= 0) 603 sfi_config->multi |= (sfi->prio & 0x7) | 0x8; 604 605 /* Filter Type. Identifies the contents of the MSDU/FM_INST_INDEX 606 * field as being either an MSDU value or an index into the Flow 607 * Meter Instance table. 608 */ 609 if (sfi->maxsdu) { 610 sfi_config->msdu = 611 cpu_to_le16(sfi->maxsdu); 612 sfi_config->multi |= 0x40; 613 } 614 615 if (sfi->meter_id >= 0) { 616 sfi_config->fm_inst_table_index = cpu_to_le16(sfi->meter_id); 617 sfi_config->multi |= 0x80; 618 } 619 620 exit: 621 return enetc_send_cmd(priv->si, &cbd); 622 } 623 624 static int enetc_streamcounter_hw_get(struct enetc_ndev_priv *priv, 625 u32 index, 626 struct psfp_streamfilter_counters *cnt) 627 { 628 struct enetc_cbd cbd = { .cmd = 2 }; 629 struct sfi_counter_data *data_buf; 630 dma_addr_t dma; 631 u16 data_size; 632 int err; 633 634 cbd.index = cpu_to_le16((u16)index); 635 cbd.cmd = 2; 636 cbd.cls = BDCR_CMD_STREAM_FILTER; 637 cbd.status_flags = 0; 638 639 data_size = sizeof(struct sfi_counter_data); 640 data_buf = kzalloc(data_size, __GFP_DMA | GFP_KERNEL); 641 if (!data_buf) 642 return -ENOMEM; 643 644 dma = dma_map_single(&priv->si->pdev->dev, data_buf, 645 data_size, DMA_FROM_DEVICE); 646 if (dma_mapping_error(&priv->si->pdev->dev, dma)) { 647 netdev_err(priv->si->ndev, "DMA mapping failed!\n"); 648 err = -ENOMEM; 649 goto exit; 650 } 651 cbd.addr[0] = lower_32_bits(dma); 652 cbd.addr[1] = upper_32_bits(dma); 653 654 cbd.length = cpu_to_le16(data_size); 655 656 err = enetc_send_cmd(priv->si, &cbd); 657 if (err) 658 goto exit; 659 660 cnt->matching_frames_count = 661 ((u64)le32_to_cpu(data_buf->matchh) << 32) 662 + data_buf->matchl; 663 664 cnt->not_passing_sdu_count = 665 ((u64)le32_to_cpu(data_buf->msdu_droph) << 32) 666 + data_buf->msdu_dropl; 667 668 cnt->passing_sdu_count = cnt->matching_frames_count 669 - cnt->not_passing_sdu_count; 670 671 cnt->not_passing_frames_count = 672 ((u64)le32_to_cpu(data_buf->stream_gate_droph) << 32) 673 + le32_to_cpu(data_buf->stream_gate_dropl); 674 675 cnt->passing_frames_count = cnt->matching_frames_count 676 - cnt->not_passing_sdu_count 677 - cnt->not_passing_frames_count; 678 679 cnt->red_frames_count = 680 ((u64)le32_to_cpu(data_buf->flow_meter_droph) << 32) 681 + le32_to_cpu(data_buf->flow_meter_dropl); 682 683 exit: 684 kfree(data_buf); 685 return err; 686 } 687 688 static u64 get_ptp_now(struct enetc_hw *hw) 689 { 690 u64 now_lo, now_hi, now; 691 692 now_lo = enetc_rd(hw, ENETC_SICTR0); 693 now_hi = enetc_rd(hw, ENETC_SICTR1); 694 now = now_lo | now_hi << 32; 695 696 return now; 697 } 698 699 static int get_start_ns(u64 now, u64 cycle, u64 *start) 700 { 701 u64 n; 702 703 if (!cycle) 704 return -EFAULT; 705 706 n = div64_u64(now, cycle); 707 708 *start = (n + 1) * cycle; 709 710 return 0; 711 } 712 713 /* Stream Gate Instance Set Descriptor */ 714 static int enetc_streamgate_hw_set(struct enetc_ndev_priv *priv, 715 struct enetc_psfp_gate *sgi, 716 u8 enable) 717 { 718 struct enetc_cbd cbd = { .cmd = 0 }; 719 struct sgi_table *sgi_config; 720 struct sgcl_conf *sgcl_config; 721 struct sgcl_data *sgcl_data; 722 struct sgce *sgce; 723 dma_addr_t dma; 724 u16 data_size; 725 int err, i; 726 u64 now; 727 728 cbd.index = cpu_to_le16(sgi->index); 729 cbd.cmd = 0; 730 cbd.cls = BDCR_CMD_STREAM_GCL; 731 cbd.status_flags = 0x80; 732 733 /* disable */ 734 if (!enable) 735 return enetc_send_cmd(priv->si, &cbd); 736 737 if (!sgi->num_entries) 738 return 0; 739 740 if (sgi->num_entries > priv->psfp_cap.max_psfp_gatelist || 741 !sgi->cycletime) 742 return -EINVAL; 743 744 /* enable */ 745 sgi_config = &cbd.sgi_table; 746 747 /* Keep open before gate list start */ 748 sgi_config->ocgtst = 0x80; 749 750 sgi_config->oipv = (sgi->init_ipv < 0) ? 751 0x0 : ((sgi->init_ipv & 0x7) | 0x8); 752 753 sgi_config->en = 0x80; 754 755 /* Basic config */ 756 err = enetc_send_cmd(priv->si, &cbd); 757 if (err) 758 return -EINVAL; 759 760 memset(&cbd, 0, sizeof(cbd)); 761 762 cbd.index = cpu_to_le16(sgi->index); 763 cbd.cmd = 1; 764 cbd.cls = BDCR_CMD_STREAM_GCL; 765 cbd.status_flags = 0; 766 767 sgcl_config = &cbd.sgcl_conf; 768 769 sgcl_config->acl_len = (sgi->num_entries - 1) & 0x3; 770 771 data_size = struct_size(sgcl_data, sgcl, sgi->num_entries); 772 773 sgcl_data = kzalloc(data_size, __GFP_DMA | GFP_KERNEL); 774 if (!sgcl_data) 775 return -ENOMEM; 776 777 cbd.length = cpu_to_le16(data_size); 778 779 dma = dma_map_single(&priv->si->pdev->dev, 780 sgcl_data, data_size, 781 DMA_FROM_DEVICE); 782 if (dma_mapping_error(&priv->si->pdev->dev, dma)) { 783 netdev_err(priv->si->ndev, "DMA mapping failed!\n"); 784 kfree(sgcl_data); 785 return -ENOMEM; 786 } 787 788 cbd.addr[0] = lower_32_bits(dma); 789 cbd.addr[1] = upper_32_bits(dma); 790 791 sgce = &sgcl_data->sgcl[0]; 792 793 sgcl_config->agtst = 0x80; 794 795 sgcl_data->ct = cpu_to_le32(sgi->cycletime); 796 sgcl_data->cte = cpu_to_le32(sgi->cycletimext); 797 798 if (sgi->init_ipv >= 0) 799 sgcl_config->aipv = (sgi->init_ipv & 0x7) | 0x8; 800 801 for (i = 0; i < sgi->num_entries; i++) { 802 struct action_gate_entry *from = &sgi->entries[i]; 803 struct sgce *to = &sgce[i]; 804 805 if (from->gate_state) 806 to->multi |= 0x10; 807 808 if (from->ipv >= 0) 809 to->multi |= ((from->ipv & 0x7) << 5) | 0x08; 810 811 if (from->maxoctets >= 0) { 812 to->multi |= 0x01; 813 to->msdu[0] = from->maxoctets & 0xFF; 814 to->msdu[1] = (from->maxoctets >> 8) & 0xFF; 815 to->msdu[2] = (from->maxoctets >> 16) & 0xFF; 816 } 817 818 to->interval = cpu_to_le32(from->interval); 819 } 820 821 /* If basetime is less than now, calculate start time */ 822 now = get_ptp_now(&priv->si->hw); 823 824 if (sgi->basetime < now) { 825 u64 start; 826 827 err = get_start_ns(now, sgi->cycletime, &start); 828 if (err) 829 goto exit; 830 sgcl_data->btl = cpu_to_le32(lower_32_bits(start)); 831 sgcl_data->bth = cpu_to_le32(upper_32_bits(start)); 832 } else { 833 u32 hi, lo; 834 835 hi = upper_32_bits(sgi->basetime); 836 lo = lower_32_bits(sgi->basetime); 837 sgcl_data->bth = cpu_to_le32(hi); 838 sgcl_data->btl = cpu_to_le32(lo); 839 } 840 841 err = enetc_send_cmd(priv->si, &cbd); 842 843 exit: 844 kfree(sgcl_data); 845 846 return err; 847 } 848 849 static int enetc_flowmeter_hw_set(struct enetc_ndev_priv *priv, 850 struct enetc_psfp_meter *fmi, 851 u8 enable) 852 { 853 struct enetc_cbd cbd = { .cmd = 0 }; 854 struct fmi_conf *fmi_config; 855 u64 temp = 0; 856 857 cbd.index = cpu_to_le16((u16)fmi->index); 858 cbd.cls = BDCR_CMD_FLOW_METER; 859 cbd.status_flags = 0x80; 860 861 if (!enable) 862 return enetc_send_cmd(priv->si, &cbd); 863 864 fmi_config = &cbd.fmi_conf; 865 fmi_config->en = 0x80; 866 867 if (fmi->cir) { 868 temp = (u64)8000 * fmi->cir; 869 temp = div_u64(temp, 3725); 870 } 871 872 fmi_config->cir = cpu_to_le32((u32)temp); 873 fmi_config->cbs = cpu_to_le32(fmi->cbs); 874 875 /* Default for eir ebs disable */ 876 fmi_config->eir = 0; 877 fmi_config->ebs = 0; 878 879 /* Default: 880 * mark red disable 881 * drop on yellow disable 882 * color mode disable 883 * couple flag disable 884 */ 885 fmi_config->conf = 0; 886 887 return enetc_send_cmd(priv->si, &cbd); 888 } 889 890 static struct enetc_stream_filter *enetc_get_stream_by_index(u32 index) 891 { 892 struct enetc_stream_filter *f; 893 894 hlist_for_each_entry(f, &epsfp.stream_list, node) 895 if (f->sid.index == index) 896 return f; 897 898 return NULL; 899 } 900 901 static struct enetc_psfp_gate *enetc_get_gate_by_index(u32 index) 902 { 903 struct enetc_psfp_gate *g; 904 905 hlist_for_each_entry(g, &epsfp.psfp_gate_list, node) 906 if (g->index == index) 907 return g; 908 909 return NULL; 910 } 911 912 static struct enetc_psfp_filter *enetc_get_filter_by_index(u32 index) 913 { 914 struct enetc_psfp_filter *s; 915 916 hlist_for_each_entry(s, &epsfp.psfp_filter_list, node) 917 if (s->index == index) 918 return s; 919 920 return NULL; 921 } 922 923 static struct enetc_psfp_meter *enetc_get_meter_by_index(u32 index) 924 { 925 struct enetc_psfp_meter *m; 926 927 hlist_for_each_entry(m, &epsfp.psfp_meter_list, node) 928 if (m->index == index) 929 return m; 930 931 return NULL; 932 } 933 934 static struct enetc_psfp_filter 935 *enetc_psfp_check_sfi(struct enetc_psfp_filter *sfi) 936 { 937 struct enetc_psfp_filter *s; 938 939 hlist_for_each_entry(s, &epsfp.psfp_filter_list, node) 940 if (s->gate_id == sfi->gate_id && 941 s->prio == sfi->prio && 942 s->maxsdu == sfi->maxsdu && 943 s->meter_id == sfi->meter_id) 944 return s; 945 946 return NULL; 947 } 948 949 static int enetc_get_free_index(struct enetc_ndev_priv *priv) 950 { 951 u32 max_size = priv->psfp_cap.max_psfp_filter; 952 unsigned long index; 953 954 index = find_first_zero_bit(epsfp.psfp_sfi_bitmap, max_size); 955 if (index == max_size) 956 return -1; 957 958 return index; 959 } 960 961 static void stream_filter_unref(struct enetc_ndev_priv *priv, u32 index) 962 { 963 struct enetc_psfp_filter *sfi; 964 u8 z; 965 966 sfi = enetc_get_filter_by_index(index); 967 WARN_ON(!sfi); 968 z = refcount_dec_and_test(&sfi->refcount); 969 970 if (z) { 971 enetc_streamfilter_hw_set(priv, sfi, false); 972 hlist_del(&sfi->node); 973 kfree(sfi); 974 clear_bit(index, epsfp.psfp_sfi_bitmap); 975 } 976 } 977 978 static void stream_gate_unref(struct enetc_ndev_priv *priv, u32 index) 979 { 980 struct enetc_psfp_gate *sgi; 981 u8 z; 982 983 sgi = enetc_get_gate_by_index(index); 984 WARN_ON(!sgi); 985 z = refcount_dec_and_test(&sgi->refcount); 986 if (z) { 987 enetc_streamgate_hw_set(priv, sgi, false); 988 hlist_del(&sgi->node); 989 kfree(sgi); 990 } 991 } 992 993 static void flow_meter_unref(struct enetc_ndev_priv *priv, u32 index) 994 { 995 struct enetc_psfp_meter *fmi; 996 u8 z; 997 998 fmi = enetc_get_meter_by_index(index); 999 WARN_ON(!fmi); 1000 z = refcount_dec_and_test(&fmi->refcount); 1001 if (z) { 1002 enetc_flowmeter_hw_set(priv, fmi, false); 1003 hlist_del(&fmi->node); 1004 kfree(fmi); 1005 } 1006 } 1007 1008 static void remove_one_chain(struct enetc_ndev_priv *priv, 1009 struct enetc_stream_filter *filter) 1010 { 1011 if (filter->flags & ENETC_PSFP_FLAGS_FMI) 1012 flow_meter_unref(priv, filter->fmi_index); 1013 1014 stream_gate_unref(priv, filter->sgi_index); 1015 stream_filter_unref(priv, filter->sfi_index); 1016 1017 hlist_del(&filter->node); 1018 kfree(filter); 1019 } 1020 1021 static int enetc_psfp_hw_set(struct enetc_ndev_priv *priv, 1022 struct enetc_streamid *sid, 1023 struct enetc_psfp_filter *sfi, 1024 struct enetc_psfp_gate *sgi, 1025 struct enetc_psfp_meter *fmi) 1026 { 1027 int err; 1028 1029 err = enetc_streamid_hw_set(priv, sid, true); 1030 if (err) 1031 return err; 1032 1033 if (sfi) { 1034 err = enetc_streamfilter_hw_set(priv, sfi, true); 1035 if (err) 1036 goto revert_sid; 1037 } 1038 1039 err = enetc_streamgate_hw_set(priv, sgi, true); 1040 if (err) 1041 goto revert_sfi; 1042 1043 if (fmi) { 1044 err = enetc_flowmeter_hw_set(priv, fmi, true); 1045 if (err) 1046 goto revert_sgi; 1047 } 1048 1049 return 0; 1050 1051 revert_sgi: 1052 enetc_streamgate_hw_set(priv, sgi, false); 1053 revert_sfi: 1054 if (sfi) 1055 enetc_streamfilter_hw_set(priv, sfi, false); 1056 revert_sid: 1057 enetc_streamid_hw_set(priv, sid, false); 1058 return err; 1059 } 1060 1061 static struct actions_fwd *enetc_check_flow_actions(u64 acts, 1062 unsigned int inputkeys) 1063 { 1064 int i; 1065 1066 for (i = 0; i < ARRAY_SIZE(enetc_act_fwd); i++) 1067 if (acts == enetc_act_fwd[i].actions && 1068 inputkeys & enetc_act_fwd[i].keys) 1069 return &enetc_act_fwd[i]; 1070 1071 return NULL; 1072 } 1073 1074 static int enetc_psfp_parse_clsflower(struct enetc_ndev_priv *priv, 1075 struct flow_cls_offload *f) 1076 { 1077 struct flow_action_entry *entryg = NULL, *entryp = NULL; 1078 struct flow_rule *rule = flow_cls_offload_flow_rule(f); 1079 struct netlink_ext_ack *extack = f->common.extack; 1080 struct enetc_stream_filter *filter, *old_filter; 1081 struct enetc_psfp_meter *fmi = NULL, *old_fmi; 1082 struct enetc_psfp_filter *sfi, *old_sfi; 1083 struct enetc_psfp_gate *sgi, *old_sgi; 1084 struct flow_action_entry *entry; 1085 struct action_gate_entry *e; 1086 u8 sfi_overwrite = 0; 1087 int entries_size; 1088 int i, err; 1089 1090 if (f->common.chain_index >= priv->psfp_cap.max_streamid) { 1091 NL_SET_ERR_MSG_MOD(extack, "No Stream identify resource!"); 1092 return -ENOSPC; 1093 } 1094 1095 flow_action_for_each(i, entry, &rule->action) 1096 if (entry->id == FLOW_ACTION_GATE) 1097 entryg = entry; 1098 else if (entry->id == FLOW_ACTION_POLICE) 1099 entryp = entry; 1100 1101 /* Not support without gate action */ 1102 if (!entryg) 1103 return -EINVAL; 1104 1105 filter = kzalloc(sizeof(*filter), GFP_KERNEL); 1106 if (!filter) 1107 return -ENOMEM; 1108 1109 filter->sid.index = f->common.chain_index; 1110 1111 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) { 1112 struct flow_match_eth_addrs match; 1113 1114 flow_rule_match_eth_addrs(rule, &match); 1115 1116 if (!is_zero_ether_addr(match.mask->dst) && 1117 !is_zero_ether_addr(match.mask->src)) { 1118 NL_SET_ERR_MSG_MOD(extack, 1119 "Cannot match on both source and destination MAC"); 1120 err = -EINVAL; 1121 goto free_filter; 1122 } 1123 1124 if (!is_zero_ether_addr(match.mask->dst)) { 1125 if (!is_broadcast_ether_addr(match.mask->dst)) { 1126 NL_SET_ERR_MSG_MOD(extack, 1127 "Masked matching on destination MAC not supported"); 1128 err = -EINVAL; 1129 goto free_filter; 1130 } 1131 ether_addr_copy(filter->sid.dst_mac, match.key->dst); 1132 filter->sid.filtertype = STREAMID_TYPE_NULL; 1133 } 1134 1135 if (!is_zero_ether_addr(match.mask->src)) { 1136 if (!is_broadcast_ether_addr(match.mask->src)) { 1137 NL_SET_ERR_MSG_MOD(extack, 1138 "Masked matching on source MAC not supported"); 1139 err = -EINVAL; 1140 goto free_filter; 1141 } 1142 ether_addr_copy(filter->sid.src_mac, match.key->src); 1143 filter->sid.filtertype = STREAMID_TYPE_SMAC; 1144 } 1145 } else { 1146 NL_SET_ERR_MSG_MOD(extack, "Unsupported, must include ETH_ADDRS"); 1147 err = -EINVAL; 1148 goto free_filter; 1149 } 1150 1151 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN)) { 1152 struct flow_match_vlan match; 1153 1154 flow_rule_match_vlan(rule, &match); 1155 if (match.mask->vlan_priority) { 1156 if (match.mask->vlan_priority != 1157 (VLAN_PRIO_MASK >> VLAN_PRIO_SHIFT)) { 1158 NL_SET_ERR_MSG_MOD(extack, "Only full mask is supported for VLAN priority"); 1159 err = -EINVAL; 1160 goto free_filter; 1161 } 1162 } 1163 1164 if (match.mask->vlan_id) { 1165 if (match.mask->vlan_id != VLAN_VID_MASK) { 1166 NL_SET_ERR_MSG_MOD(extack, "Only full mask is supported for VLAN id"); 1167 err = -EINVAL; 1168 goto free_filter; 1169 } 1170 1171 filter->sid.vid = match.key->vlan_id; 1172 if (!filter->sid.vid) 1173 filter->sid.tagged = STREAMID_VLAN_UNTAGGED; 1174 else 1175 filter->sid.tagged = STREAMID_VLAN_TAGGED; 1176 } 1177 } else { 1178 filter->sid.tagged = STREAMID_VLAN_ALL; 1179 } 1180 1181 /* parsing gate action */ 1182 if (entryg->gate.index >= priv->psfp_cap.max_psfp_gate) { 1183 NL_SET_ERR_MSG_MOD(extack, "No Stream Gate resource!"); 1184 err = -ENOSPC; 1185 goto free_filter; 1186 } 1187 1188 if (entryg->gate.num_entries >= priv->psfp_cap.max_psfp_gatelist) { 1189 NL_SET_ERR_MSG_MOD(extack, "No Stream Gate resource!"); 1190 err = -ENOSPC; 1191 goto free_filter; 1192 } 1193 1194 entries_size = struct_size(sgi, entries, entryg->gate.num_entries); 1195 sgi = kzalloc(entries_size, GFP_KERNEL); 1196 if (!sgi) { 1197 err = -ENOMEM; 1198 goto free_filter; 1199 } 1200 1201 refcount_set(&sgi->refcount, 1); 1202 sgi->index = entryg->gate.index; 1203 sgi->init_ipv = entryg->gate.prio; 1204 sgi->basetime = entryg->gate.basetime; 1205 sgi->cycletime = entryg->gate.cycletime; 1206 sgi->num_entries = entryg->gate.num_entries; 1207 1208 e = sgi->entries; 1209 for (i = 0; i < entryg->gate.num_entries; i++) { 1210 e[i].gate_state = entryg->gate.entries[i].gate_state; 1211 e[i].interval = entryg->gate.entries[i].interval; 1212 e[i].ipv = entryg->gate.entries[i].ipv; 1213 e[i].maxoctets = entryg->gate.entries[i].maxoctets; 1214 } 1215 1216 filter->sgi_index = sgi->index; 1217 1218 sfi = kzalloc(sizeof(*sfi), GFP_KERNEL); 1219 if (!sfi) { 1220 err = -ENOMEM; 1221 goto free_gate; 1222 } 1223 1224 refcount_set(&sfi->refcount, 1); 1225 sfi->gate_id = sgi->index; 1226 sfi->meter_id = ENETC_PSFP_WILDCARD; 1227 1228 /* Flow meter and max frame size */ 1229 if (entryp) { 1230 if (entryp->police.burst) { 1231 fmi = kzalloc(sizeof(*fmi), GFP_KERNEL); 1232 if (!fmi) { 1233 err = -ENOMEM; 1234 goto free_sfi; 1235 } 1236 refcount_set(&fmi->refcount, 1); 1237 fmi->cir = entryp->police.rate_bytes_ps; 1238 fmi->cbs = entryp->police.burst; 1239 fmi->index = entryp->police.index; 1240 filter->flags |= ENETC_PSFP_FLAGS_FMI; 1241 filter->fmi_index = fmi->index; 1242 sfi->meter_id = fmi->index; 1243 } 1244 1245 if (entryp->police.mtu) 1246 sfi->maxsdu = entryp->police.mtu; 1247 } 1248 1249 /* prio ref the filter prio */ 1250 if (f->common.prio && f->common.prio <= BIT(3)) 1251 sfi->prio = f->common.prio - 1; 1252 else 1253 sfi->prio = ENETC_PSFP_WILDCARD; 1254 1255 old_sfi = enetc_psfp_check_sfi(sfi); 1256 if (!old_sfi) { 1257 int index; 1258 1259 index = enetc_get_free_index(priv); 1260 if (sfi->handle < 0) { 1261 NL_SET_ERR_MSG_MOD(extack, "No Stream Filter resource!"); 1262 err = -ENOSPC; 1263 goto free_fmi; 1264 } 1265 1266 sfi->index = index; 1267 sfi->handle = index + HANDLE_OFFSET; 1268 /* Update the stream filter handle also */ 1269 filter->sid.handle = sfi->handle; 1270 filter->sfi_index = sfi->index; 1271 sfi_overwrite = 0; 1272 } else { 1273 filter->sfi_index = old_sfi->index; 1274 filter->sid.handle = old_sfi->handle; 1275 sfi_overwrite = 1; 1276 } 1277 1278 err = enetc_psfp_hw_set(priv, &filter->sid, 1279 sfi_overwrite ? NULL : sfi, sgi, fmi); 1280 if (err) 1281 goto free_fmi; 1282 1283 spin_lock(&epsfp.psfp_lock); 1284 if (filter->flags & ENETC_PSFP_FLAGS_FMI) { 1285 old_fmi = enetc_get_meter_by_index(filter->fmi_index); 1286 if (old_fmi) { 1287 fmi->refcount = old_fmi->refcount; 1288 refcount_set(&fmi->refcount, 1289 refcount_read(&old_fmi->refcount) + 1); 1290 hlist_del(&old_fmi->node); 1291 kfree(old_fmi); 1292 } 1293 hlist_add_head(&fmi->node, &epsfp.psfp_meter_list); 1294 } 1295 1296 /* Remove the old node if exist and update with a new node */ 1297 old_sgi = enetc_get_gate_by_index(filter->sgi_index); 1298 if (old_sgi) { 1299 refcount_set(&sgi->refcount, 1300 refcount_read(&old_sgi->refcount) + 1); 1301 hlist_del(&old_sgi->node); 1302 kfree(old_sgi); 1303 } 1304 1305 hlist_add_head(&sgi->node, &epsfp.psfp_gate_list); 1306 1307 if (!old_sfi) { 1308 hlist_add_head(&sfi->node, &epsfp.psfp_filter_list); 1309 set_bit(sfi->index, epsfp.psfp_sfi_bitmap); 1310 } else { 1311 kfree(sfi); 1312 refcount_inc(&old_sfi->refcount); 1313 } 1314 1315 old_filter = enetc_get_stream_by_index(filter->sid.index); 1316 if (old_filter) 1317 remove_one_chain(priv, old_filter); 1318 1319 filter->stats.lastused = jiffies; 1320 hlist_add_head(&filter->node, &epsfp.stream_list); 1321 1322 spin_unlock(&epsfp.psfp_lock); 1323 1324 return 0; 1325 1326 free_fmi: 1327 kfree(fmi); 1328 free_sfi: 1329 kfree(sfi); 1330 free_gate: 1331 kfree(sgi); 1332 free_filter: 1333 kfree(filter); 1334 1335 return err; 1336 } 1337 1338 static int enetc_config_clsflower(struct enetc_ndev_priv *priv, 1339 struct flow_cls_offload *cls_flower) 1340 { 1341 struct flow_rule *rule = flow_cls_offload_flow_rule(cls_flower); 1342 struct netlink_ext_ack *extack = cls_flower->common.extack; 1343 struct flow_dissector *dissector = rule->match.dissector; 1344 struct flow_action *action = &rule->action; 1345 struct flow_action_entry *entry; 1346 struct actions_fwd *fwd; 1347 u64 actions = 0; 1348 int i, err; 1349 1350 if (!flow_action_has_entries(action)) { 1351 NL_SET_ERR_MSG_MOD(extack, "At least one action is needed"); 1352 return -EINVAL; 1353 } 1354 1355 flow_action_for_each(i, entry, action) 1356 actions |= BIT(entry->id); 1357 1358 fwd = enetc_check_flow_actions(actions, dissector->used_keys); 1359 if (!fwd) { 1360 NL_SET_ERR_MSG_MOD(extack, "Unsupported filter type!"); 1361 return -EOPNOTSUPP; 1362 } 1363 1364 if (fwd->output & FILTER_ACTION_TYPE_PSFP) { 1365 err = enetc_psfp_parse_clsflower(priv, cls_flower); 1366 if (err) { 1367 NL_SET_ERR_MSG_MOD(extack, "Invalid PSFP inputs"); 1368 return err; 1369 } 1370 } else { 1371 NL_SET_ERR_MSG_MOD(extack, "Unsupported actions"); 1372 return -EOPNOTSUPP; 1373 } 1374 1375 return 0; 1376 } 1377 1378 static int enetc_psfp_destroy_clsflower(struct enetc_ndev_priv *priv, 1379 struct flow_cls_offload *f) 1380 { 1381 struct enetc_stream_filter *filter; 1382 struct netlink_ext_ack *extack = f->common.extack; 1383 int err; 1384 1385 if (f->common.chain_index >= priv->psfp_cap.max_streamid) { 1386 NL_SET_ERR_MSG_MOD(extack, "No Stream identify resource!"); 1387 return -ENOSPC; 1388 } 1389 1390 filter = enetc_get_stream_by_index(f->common.chain_index); 1391 if (!filter) 1392 return -EINVAL; 1393 1394 err = enetc_streamid_hw_set(priv, &filter->sid, false); 1395 if (err) 1396 return err; 1397 1398 remove_one_chain(priv, filter); 1399 1400 return 0; 1401 } 1402 1403 static int enetc_destroy_clsflower(struct enetc_ndev_priv *priv, 1404 struct flow_cls_offload *f) 1405 { 1406 return enetc_psfp_destroy_clsflower(priv, f); 1407 } 1408 1409 static int enetc_psfp_get_stats(struct enetc_ndev_priv *priv, 1410 struct flow_cls_offload *f) 1411 { 1412 struct psfp_streamfilter_counters counters = {}; 1413 struct enetc_stream_filter *filter; 1414 struct flow_stats stats = {}; 1415 int err; 1416 1417 filter = enetc_get_stream_by_index(f->common.chain_index); 1418 if (!filter) 1419 return -EINVAL; 1420 1421 err = enetc_streamcounter_hw_get(priv, filter->sfi_index, &counters); 1422 if (err) 1423 return -EINVAL; 1424 1425 spin_lock(&epsfp.psfp_lock); 1426 stats.pkts = counters.matching_frames_count + 1427 counters.not_passing_sdu_count - 1428 filter->stats.pkts; 1429 stats.drops = counters.not_passing_frames_count + 1430 counters.not_passing_sdu_count + 1431 counters.red_frames_count - 1432 filter->stats.drops; 1433 stats.lastused = filter->stats.lastused; 1434 filter->stats.pkts += stats.pkts; 1435 filter->stats.drops += stats.drops; 1436 spin_unlock(&epsfp.psfp_lock); 1437 1438 flow_stats_update(&f->stats, 0x0, stats.pkts, stats.drops, 1439 stats.lastused, FLOW_ACTION_HW_STATS_DELAYED); 1440 1441 return 0; 1442 } 1443 1444 static int enetc_setup_tc_cls_flower(struct enetc_ndev_priv *priv, 1445 struct flow_cls_offload *cls_flower) 1446 { 1447 switch (cls_flower->command) { 1448 case FLOW_CLS_REPLACE: 1449 return enetc_config_clsflower(priv, cls_flower); 1450 case FLOW_CLS_DESTROY: 1451 return enetc_destroy_clsflower(priv, cls_flower); 1452 case FLOW_CLS_STATS: 1453 return enetc_psfp_get_stats(priv, cls_flower); 1454 default: 1455 return -EOPNOTSUPP; 1456 } 1457 } 1458 1459 static inline void clean_psfp_sfi_bitmap(void) 1460 { 1461 bitmap_free(epsfp.psfp_sfi_bitmap); 1462 epsfp.psfp_sfi_bitmap = NULL; 1463 } 1464 1465 static void clean_stream_list(void) 1466 { 1467 struct enetc_stream_filter *s; 1468 struct hlist_node *tmp; 1469 1470 hlist_for_each_entry_safe(s, tmp, &epsfp.stream_list, node) { 1471 hlist_del(&s->node); 1472 kfree(s); 1473 } 1474 } 1475 1476 static void clean_sfi_list(void) 1477 { 1478 struct enetc_psfp_filter *sfi; 1479 struct hlist_node *tmp; 1480 1481 hlist_for_each_entry_safe(sfi, tmp, &epsfp.psfp_filter_list, node) { 1482 hlist_del(&sfi->node); 1483 kfree(sfi); 1484 } 1485 } 1486 1487 static void clean_sgi_list(void) 1488 { 1489 struct enetc_psfp_gate *sgi; 1490 struct hlist_node *tmp; 1491 1492 hlist_for_each_entry_safe(sgi, tmp, &epsfp.psfp_gate_list, node) { 1493 hlist_del(&sgi->node); 1494 kfree(sgi); 1495 } 1496 } 1497 1498 static void clean_psfp_all(void) 1499 { 1500 /* Disable all list nodes and free all memory */ 1501 clean_sfi_list(); 1502 clean_sgi_list(); 1503 clean_stream_list(); 1504 epsfp.dev_bitmap = 0; 1505 clean_psfp_sfi_bitmap(); 1506 } 1507 1508 int enetc_setup_tc_block_cb(enum tc_setup_type type, void *type_data, 1509 void *cb_priv) 1510 { 1511 struct net_device *ndev = cb_priv; 1512 1513 if (!tc_can_offload(ndev)) 1514 return -EOPNOTSUPP; 1515 1516 switch (type) { 1517 case TC_SETUP_CLSFLOWER: 1518 return enetc_setup_tc_cls_flower(netdev_priv(ndev), type_data); 1519 default: 1520 return -EOPNOTSUPP; 1521 } 1522 } 1523 1524 int enetc_psfp_init(struct enetc_ndev_priv *priv) 1525 { 1526 if (epsfp.psfp_sfi_bitmap) 1527 return 0; 1528 1529 epsfp.psfp_sfi_bitmap = bitmap_zalloc(priv->psfp_cap.max_psfp_filter, 1530 GFP_KERNEL); 1531 if (!epsfp.psfp_sfi_bitmap) 1532 return -ENOMEM; 1533 1534 spin_lock_init(&epsfp.psfp_lock); 1535 1536 if (list_empty(&enetc_block_cb_list)) 1537 epsfp.dev_bitmap = 0; 1538 1539 return 0; 1540 } 1541 1542 int enetc_psfp_clean(struct enetc_ndev_priv *priv) 1543 { 1544 if (!list_empty(&enetc_block_cb_list)) 1545 return -EBUSY; 1546 1547 clean_psfp_all(); 1548 1549 return 0; 1550 } 1551 1552 int enetc_setup_tc_psfp(struct net_device *ndev, void *type_data) 1553 { 1554 struct enetc_ndev_priv *priv = netdev_priv(ndev); 1555 struct flow_block_offload *f = type_data; 1556 int err; 1557 1558 err = flow_block_cb_setup_simple(f, &enetc_block_cb_list, 1559 enetc_setup_tc_block_cb, 1560 ndev, ndev, true); 1561 if (err) 1562 return err; 1563 1564 switch (f->command) { 1565 case FLOW_BLOCK_BIND: 1566 set_bit(enetc_get_port(priv), &epsfp.dev_bitmap); 1567 break; 1568 case FLOW_BLOCK_UNBIND: 1569 clear_bit(enetc_get_port(priv), &epsfp.dev_bitmap); 1570 if (!epsfp.dev_bitmap) 1571 clean_psfp_all(); 1572 break; 1573 } 1574 1575 return 0; 1576 } 1577