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] = cpu_to_le32(lower_32_bits(dma)); 122 cbd.addr[1] = cpu_to_le32(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 /* Stream Identity Entry Set Descriptor */ 459 static int enetc_streamid_hw_set(struct enetc_ndev_priv *priv, 460 struct enetc_streamid *sid, 461 u8 enable) 462 { 463 struct enetc_cbd cbd = {.cmd = 0}; 464 struct streamid_data *si_data; 465 struct streamid_conf *si_conf; 466 u16 data_size; 467 dma_addr_t dma; 468 int port; 469 int err; 470 471 port = enetc_pf_to_port(priv->si->pdev); 472 if (port < 0) 473 return -EINVAL; 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] = cpu_to_le32(lower_32_bits(dma)); 500 cbd.addr[1] = cpu_to_le32(upper_32_bits(dma)); 501 eth_broadcast_addr(si_data->dmac); 502 si_data->vid_vidm_tg = (ENETC_CBDR_SID_VID_MASK 503 + ((0x3 << 14) | ENETC_CBDR_SID_VIDM)); 504 505 si_conf = &cbd.sid_set; 506 /* Only one port supported for one entry, set itself */ 507 si_conf->iports = cpu_to_le32(1 << port); 508 si_conf->id_type = 1; 509 si_conf->oui[2] = 0x0; 510 si_conf->oui[1] = 0x80; 511 si_conf->oui[0] = 0xC2; 512 513 err = enetc_send_cmd(priv->si, &cbd); 514 if (err) 515 return -EINVAL; 516 517 if (!enable) { 518 kfree(si_data); 519 return 0; 520 } 521 522 /* Enable the entry overwrite again incase space flushed by hardware */ 523 memset(&cbd, 0, sizeof(cbd)); 524 525 cbd.index = cpu_to_le16((u16)sid->index); 526 cbd.cmd = 0; 527 cbd.cls = BDCR_CMD_STREAM_IDENTIFY; 528 cbd.status_flags = 0; 529 530 si_conf->en = 0x80; 531 si_conf->stream_handle = cpu_to_le32(sid->handle); 532 si_conf->iports = cpu_to_le32(1 << port); 533 si_conf->id_type = sid->filtertype; 534 si_conf->oui[2] = 0x0; 535 si_conf->oui[1] = 0x80; 536 si_conf->oui[0] = 0xC2; 537 538 memset(si_data, 0, data_size); 539 540 cbd.length = cpu_to_le16(data_size); 541 542 cbd.addr[0] = cpu_to_le32(lower_32_bits(dma)); 543 cbd.addr[1] = cpu_to_le32(upper_32_bits(dma)); 544 545 /* VIDM default to be 1. 546 * VID Match. If set (b1) then the VID must match, otherwise 547 * any VID is considered a match. VIDM setting is only used 548 * when TG is set to b01. 549 */ 550 if (si_conf->id_type == STREAMID_TYPE_NULL) { 551 ether_addr_copy(si_data->dmac, sid->dst_mac); 552 si_data->vid_vidm_tg = (sid->vid & ENETC_CBDR_SID_VID_MASK) + 553 ((((u16)(sid->tagged) & 0x3) << 14) 554 | ENETC_CBDR_SID_VIDM); 555 } else if (si_conf->id_type == STREAMID_TYPE_SMAC) { 556 ether_addr_copy(si_data->smac, sid->src_mac); 557 si_data->vid_vidm_tg = (sid->vid & ENETC_CBDR_SID_VID_MASK) + 558 ((((u16)(sid->tagged) & 0x3) << 14) 559 | ENETC_CBDR_SID_VIDM); 560 } 561 562 err = enetc_send_cmd(priv->si, &cbd); 563 kfree(si_data); 564 565 return err; 566 } 567 568 /* Stream Filter Instance Set Descriptor */ 569 static int enetc_streamfilter_hw_set(struct enetc_ndev_priv *priv, 570 struct enetc_psfp_filter *sfi, 571 u8 enable) 572 { 573 struct enetc_cbd cbd = {.cmd = 0}; 574 struct sfi_conf *sfi_config; 575 int port; 576 577 port = enetc_pf_to_port(priv->si->pdev); 578 if (port < 0) 579 return -EINVAL; 580 581 cbd.index = cpu_to_le16(sfi->index); 582 cbd.cls = BDCR_CMD_STREAM_FILTER; 583 cbd.status_flags = 0x80; 584 cbd.length = cpu_to_le16(1); 585 586 sfi_config = &cbd.sfi_conf; 587 if (!enable) 588 goto exit; 589 590 sfi_config->en = 0x80; 591 592 if (sfi->handle >= 0) { 593 sfi_config->stream_handle = 594 cpu_to_le32(sfi->handle); 595 sfi_config->sthm |= 0x80; 596 } 597 598 sfi_config->sg_inst_table_index = cpu_to_le16(sfi->gate_id); 599 sfi_config->input_ports = cpu_to_le32(1 << port); 600 601 /* The priority value which may be matched against the 602 * frame’s priority value to determine a match for this entry. 603 */ 604 if (sfi->prio >= 0) 605 sfi_config->multi |= (sfi->prio & 0x7) | 0x8; 606 607 /* Filter Type. Identifies the contents of the MSDU/FM_INST_INDEX 608 * field as being either an MSDU value or an index into the Flow 609 * Meter Instance table. 610 */ 611 if (sfi->maxsdu) { 612 sfi_config->msdu = 613 cpu_to_le16(sfi->maxsdu); 614 sfi_config->multi |= 0x40; 615 } 616 617 if (sfi->meter_id >= 0) { 618 sfi_config->fm_inst_table_index = cpu_to_le16(sfi->meter_id); 619 sfi_config->multi |= 0x80; 620 } 621 622 exit: 623 return enetc_send_cmd(priv->si, &cbd); 624 } 625 626 static int enetc_streamcounter_hw_get(struct enetc_ndev_priv *priv, 627 u32 index, 628 struct psfp_streamfilter_counters *cnt) 629 { 630 struct enetc_cbd cbd = { .cmd = 2 }; 631 struct sfi_counter_data *data_buf; 632 dma_addr_t dma; 633 u16 data_size; 634 int err; 635 636 cbd.index = cpu_to_le16((u16)index); 637 cbd.cmd = 2; 638 cbd.cls = BDCR_CMD_STREAM_FILTER; 639 cbd.status_flags = 0; 640 641 data_size = sizeof(struct sfi_counter_data); 642 data_buf = kzalloc(data_size, __GFP_DMA | GFP_KERNEL); 643 if (!data_buf) 644 return -ENOMEM; 645 646 dma = dma_map_single(&priv->si->pdev->dev, data_buf, 647 data_size, DMA_FROM_DEVICE); 648 if (dma_mapping_error(&priv->si->pdev->dev, dma)) { 649 netdev_err(priv->si->ndev, "DMA mapping failed!\n"); 650 err = -ENOMEM; 651 goto exit; 652 } 653 cbd.addr[0] = cpu_to_le32(lower_32_bits(dma)); 654 cbd.addr[1] = cpu_to_le32(upper_32_bits(dma)); 655 656 cbd.length = cpu_to_le16(data_size); 657 658 err = enetc_send_cmd(priv->si, &cbd); 659 if (err) 660 goto exit; 661 662 cnt->matching_frames_count = ((u64)data_buf->matchh << 32) + 663 data_buf->matchl; 664 665 cnt->not_passing_sdu_count = ((u64)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)data_buf->stream_gate_droph << 32) + 673 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 = ((u64)data_buf->flow_meter_droph << 32) + 680 data_buf->flow_meter_dropl; 681 682 exit: 683 kfree(data_buf); 684 return err; 685 } 686 687 static u64 get_ptp_now(struct enetc_hw *hw) 688 { 689 u64 now_lo, now_hi, now; 690 691 now_lo = enetc_rd(hw, ENETC_SICTR0); 692 now_hi = enetc_rd(hw, ENETC_SICTR1); 693 now = now_lo | now_hi << 32; 694 695 return now; 696 } 697 698 static int get_start_ns(u64 now, u64 cycle, u64 *start) 699 { 700 u64 n; 701 702 if (!cycle) 703 return -EFAULT; 704 705 n = div64_u64(now, cycle); 706 707 *start = (n + 1) * cycle; 708 709 return 0; 710 } 711 712 /* Stream Gate Instance Set Descriptor */ 713 static int enetc_streamgate_hw_set(struct enetc_ndev_priv *priv, 714 struct enetc_psfp_gate *sgi, 715 u8 enable) 716 { 717 struct enetc_cbd cbd = { .cmd = 0 }; 718 struct sgi_table *sgi_config; 719 struct sgcl_conf *sgcl_config; 720 struct sgcl_data *sgcl_data; 721 struct sgce *sgce; 722 dma_addr_t dma; 723 u16 data_size; 724 int err, i; 725 u64 now; 726 727 cbd.index = cpu_to_le16(sgi->index); 728 cbd.cmd = 0; 729 cbd.cls = BDCR_CMD_STREAM_GCL; 730 cbd.status_flags = 0x80; 731 732 /* disable */ 733 if (!enable) 734 return enetc_send_cmd(priv->si, &cbd); 735 736 if (!sgi->num_entries) 737 return 0; 738 739 if (sgi->num_entries > priv->psfp_cap.max_psfp_gatelist || 740 !sgi->cycletime) 741 return -EINVAL; 742 743 /* enable */ 744 sgi_config = &cbd.sgi_table; 745 746 /* Keep open before gate list start */ 747 sgi_config->ocgtst = 0x80; 748 749 sgi_config->oipv = (sgi->init_ipv < 0) ? 750 0x0 : ((sgi->init_ipv & 0x7) | 0x8); 751 752 sgi_config->en = 0x80; 753 754 /* Basic config */ 755 err = enetc_send_cmd(priv->si, &cbd); 756 if (err) 757 return -EINVAL; 758 759 memset(&cbd, 0, sizeof(cbd)); 760 761 cbd.index = cpu_to_le16(sgi->index); 762 cbd.cmd = 1; 763 cbd.cls = BDCR_CMD_STREAM_GCL; 764 cbd.status_flags = 0; 765 766 sgcl_config = &cbd.sgcl_conf; 767 768 sgcl_config->acl_len = (sgi->num_entries - 1) & 0x3; 769 770 data_size = struct_size(sgcl_data, sgcl, sgi->num_entries); 771 772 sgcl_data = kzalloc(data_size, __GFP_DMA | GFP_KERNEL); 773 if (!sgcl_data) 774 return -ENOMEM; 775 776 cbd.length = cpu_to_le16(data_size); 777 778 dma = dma_map_single(&priv->si->pdev->dev, 779 sgcl_data, data_size, 780 DMA_FROM_DEVICE); 781 if (dma_mapping_error(&priv->si->pdev->dev, dma)) { 782 netdev_err(priv->si->ndev, "DMA mapping failed!\n"); 783 kfree(sgcl_data); 784 return -ENOMEM; 785 } 786 787 cbd.addr[0] = cpu_to_le32(lower_32_bits(dma)); 788 cbd.addr[1] = cpu_to_le32(upper_32_bits(dma)); 789 790 sgce = &sgcl_data->sgcl[0]; 791 792 sgcl_config->agtst = 0x80; 793 794 sgcl_data->ct = sgi->cycletime; 795 sgcl_data->cte = sgi->cycletimext; 796 797 if (sgi->init_ipv >= 0) 798 sgcl_config->aipv = (sgi->init_ipv & 0x7) | 0x8; 799 800 for (i = 0; i < sgi->num_entries; i++) { 801 struct action_gate_entry *from = &sgi->entries[i]; 802 struct sgce *to = &sgce[i]; 803 804 if (from->gate_state) 805 to->multi |= 0x10; 806 807 if (from->ipv >= 0) 808 to->multi |= ((from->ipv & 0x7) << 5) | 0x08; 809 810 if (from->maxoctets >= 0) { 811 to->multi |= 0x01; 812 to->msdu[0] = from->maxoctets & 0xFF; 813 to->msdu[1] = (from->maxoctets >> 8) & 0xFF; 814 to->msdu[2] = (from->maxoctets >> 16) & 0xFF; 815 } 816 817 to->interval = from->interval; 818 } 819 820 /* If basetime is less than now, calculate start time */ 821 now = get_ptp_now(&priv->si->hw); 822 823 if (sgi->basetime < now) { 824 u64 start; 825 826 err = get_start_ns(now, sgi->cycletime, &start); 827 if (err) 828 goto exit; 829 sgcl_data->btl = lower_32_bits(start); 830 sgcl_data->bth = upper_32_bits(start); 831 } else { 832 u32 hi, lo; 833 834 hi = upper_32_bits(sgi->basetime); 835 lo = lower_32_bits(sgi->basetime); 836 sgcl_data->bth = hi; 837 sgcl_data->btl = lo; 838 } 839 840 err = enetc_send_cmd(priv->si, &cbd); 841 842 exit: 843 kfree(sgcl_data); 844 845 return err; 846 } 847 848 static int enetc_flowmeter_hw_set(struct enetc_ndev_priv *priv, 849 struct enetc_psfp_meter *fmi, 850 u8 enable) 851 { 852 struct enetc_cbd cbd = { .cmd = 0 }; 853 struct fmi_conf *fmi_config; 854 u64 temp = 0; 855 856 cbd.index = cpu_to_le16((u16)fmi->index); 857 cbd.cls = BDCR_CMD_FLOW_METER; 858 cbd.status_flags = 0x80; 859 860 if (!enable) 861 return enetc_send_cmd(priv->si, &cbd); 862 863 fmi_config = &cbd.fmi_conf; 864 fmi_config->en = 0x80; 865 866 if (fmi->cir) { 867 temp = (u64)8000 * fmi->cir; 868 temp = div_u64(temp, 3725); 869 } 870 871 fmi_config->cir = cpu_to_le32((u32)temp); 872 fmi_config->cbs = cpu_to_le32(fmi->cbs); 873 874 /* Default for eir ebs disable */ 875 fmi_config->eir = 0; 876 fmi_config->ebs = 0; 877 878 /* Default: 879 * mark red disable 880 * drop on yellow disable 881 * color mode disable 882 * couple flag disable 883 */ 884 fmi_config->conf = 0; 885 886 return enetc_send_cmd(priv->si, &cbd); 887 } 888 889 static struct enetc_stream_filter *enetc_get_stream_by_index(u32 index) 890 { 891 struct enetc_stream_filter *f; 892 893 hlist_for_each_entry(f, &epsfp.stream_list, node) 894 if (f->sid.index == index) 895 return f; 896 897 return NULL; 898 } 899 900 static struct enetc_psfp_gate *enetc_get_gate_by_index(u32 index) 901 { 902 struct enetc_psfp_gate *g; 903 904 hlist_for_each_entry(g, &epsfp.psfp_gate_list, node) 905 if (g->index == index) 906 return g; 907 908 return NULL; 909 } 910 911 static struct enetc_psfp_filter *enetc_get_filter_by_index(u32 index) 912 { 913 struct enetc_psfp_filter *s; 914 915 hlist_for_each_entry(s, &epsfp.psfp_filter_list, node) 916 if (s->index == index) 917 return s; 918 919 return NULL; 920 } 921 922 static struct enetc_psfp_meter *enetc_get_meter_by_index(u32 index) 923 { 924 struct enetc_psfp_meter *m; 925 926 hlist_for_each_entry(m, &epsfp.psfp_meter_list, node) 927 if (m->index == index) 928 return m; 929 930 return NULL; 931 } 932 933 static struct enetc_psfp_filter 934 *enetc_psfp_check_sfi(struct enetc_psfp_filter *sfi) 935 { 936 struct enetc_psfp_filter *s; 937 938 hlist_for_each_entry(s, &epsfp.psfp_filter_list, node) 939 if (s->gate_id == sfi->gate_id && 940 s->prio == sfi->prio && 941 s->maxsdu == sfi->maxsdu && 942 s->meter_id == sfi->meter_id) 943 return s; 944 945 return NULL; 946 } 947 948 static int enetc_get_free_index(struct enetc_ndev_priv *priv) 949 { 950 u32 max_size = priv->psfp_cap.max_psfp_filter; 951 unsigned long index; 952 953 index = find_first_zero_bit(epsfp.psfp_sfi_bitmap, max_size); 954 if (index == max_size) 955 return -1; 956 957 return index; 958 } 959 960 static void stream_filter_unref(struct enetc_ndev_priv *priv, u32 index) 961 { 962 struct enetc_psfp_filter *sfi; 963 u8 z; 964 965 sfi = enetc_get_filter_by_index(index); 966 WARN_ON(!sfi); 967 z = refcount_dec_and_test(&sfi->refcount); 968 969 if (z) { 970 enetc_streamfilter_hw_set(priv, sfi, false); 971 hlist_del(&sfi->node); 972 kfree(sfi); 973 clear_bit(index, epsfp.psfp_sfi_bitmap); 974 } 975 } 976 977 static void stream_gate_unref(struct enetc_ndev_priv *priv, u32 index) 978 { 979 struct enetc_psfp_gate *sgi; 980 u8 z; 981 982 sgi = enetc_get_gate_by_index(index); 983 WARN_ON(!sgi); 984 z = refcount_dec_and_test(&sgi->refcount); 985 if (z) { 986 enetc_streamgate_hw_set(priv, sgi, false); 987 hlist_del(&sgi->node); 988 kfree(sgi); 989 } 990 } 991 992 static void flow_meter_unref(struct enetc_ndev_priv *priv, u32 index) 993 { 994 struct enetc_psfp_meter *fmi; 995 u8 z; 996 997 fmi = enetc_get_meter_by_index(index); 998 WARN_ON(!fmi); 999 z = refcount_dec_and_test(&fmi->refcount); 1000 if (z) { 1001 enetc_flowmeter_hw_set(priv, fmi, false); 1002 hlist_del(&fmi->node); 1003 kfree(fmi); 1004 } 1005 } 1006 1007 static void remove_one_chain(struct enetc_ndev_priv *priv, 1008 struct enetc_stream_filter *filter) 1009 { 1010 if (filter->flags & ENETC_PSFP_FLAGS_FMI) 1011 flow_meter_unref(priv, filter->fmi_index); 1012 1013 stream_gate_unref(priv, filter->sgi_index); 1014 stream_filter_unref(priv, filter->sfi_index); 1015 1016 hlist_del(&filter->node); 1017 kfree(filter); 1018 } 1019 1020 static int enetc_psfp_hw_set(struct enetc_ndev_priv *priv, 1021 struct enetc_streamid *sid, 1022 struct enetc_psfp_filter *sfi, 1023 struct enetc_psfp_gate *sgi, 1024 struct enetc_psfp_meter *fmi) 1025 { 1026 int err; 1027 1028 err = enetc_streamid_hw_set(priv, sid, true); 1029 if (err) 1030 return err; 1031 1032 if (sfi) { 1033 err = enetc_streamfilter_hw_set(priv, sfi, true); 1034 if (err) 1035 goto revert_sid; 1036 } 1037 1038 err = enetc_streamgate_hw_set(priv, sgi, true); 1039 if (err) 1040 goto revert_sfi; 1041 1042 if (fmi) { 1043 err = enetc_flowmeter_hw_set(priv, fmi, true); 1044 if (err) 1045 goto revert_sgi; 1046 } 1047 1048 return 0; 1049 1050 revert_sgi: 1051 enetc_streamgate_hw_set(priv, sgi, false); 1052 revert_sfi: 1053 if (sfi) 1054 enetc_streamfilter_hw_set(priv, sfi, false); 1055 revert_sid: 1056 enetc_streamid_hw_set(priv, sid, false); 1057 return err; 1058 } 1059 1060 static struct actions_fwd *enetc_check_flow_actions(u64 acts, 1061 unsigned int inputkeys) 1062 { 1063 int i; 1064 1065 for (i = 0; i < ARRAY_SIZE(enetc_act_fwd); i++) 1066 if (acts == enetc_act_fwd[i].actions && 1067 inputkeys & enetc_act_fwd[i].keys) 1068 return &enetc_act_fwd[i]; 1069 1070 return NULL; 1071 } 1072 1073 static int enetc_psfp_parse_clsflower(struct enetc_ndev_priv *priv, 1074 struct flow_cls_offload *f) 1075 { 1076 struct flow_action_entry *entryg = NULL, *entryp = NULL; 1077 struct flow_rule *rule = flow_cls_offload_flow_rule(f); 1078 struct netlink_ext_ack *extack = f->common.extack; 1079 struct enetc_stream_filter *filter, *old_filter; 1080 struct enetc_psfp_meter *fmi = NULL, *old_fmi; 1081 struct enetc_psfp_filter *sfi, *old_sfi; 1082 struct enetc_psfp_gate *sgi, *old_sgi; 1083 struct flow_action_entry *entry; 1084 struct action_gate_entry *e; 1085 u8 sfi_overwrite = 0; 1086 int entries_size; 1087 int i, err; 1088 1089 if (f->common.chain_index >= priv->psfp_cap.max_streamid) { 1090 NL_SET_ERR_MSG_MOD(extack, "No Stream identify resource!"); 1091 return -ENOSPC; 1092 } 1093 1094 flow_action_for_each(i, entry, &rule->action) 1095 if (entry->id == FLOW_ACTION_GATE) 1096 entryg = entry; 1097 else if (entry->id == FLOW_ACTION_POLICE) 1098 entryp = entry; 1099 1100 /* Not support without gate action */ 1101 if (!entryg) 1102 return -EINVAL; 1103 1104 filter = kzalloc(sizeof(*filter), GFP_KERNEL); 1105 if (!filter) 1106 return -ENOMEM; 1107 1108 filter->sid.index = f->common.chain_index; 1109 1110 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) { 1111 struct flow_match_eth_addrs match; 1112 1113 flow_rule_match_eth_addrs(rule, &match); 1114 1115 if (!is_zero_ether_addr(match.mask->dst) && 1116 !is_zero_ether_addr(match.mask->src)) { 1117 NL_SET_ERR_MSG_MOD(extack, 1118 "Cannot match on both source and destination MAC"); 1119 err = -EINVAL; 1120 goto free_filter; 1121 } 1122 1123 if (!is_zero_ether_addr(match.mask->dst)) { 1124 if (!is_broadcast_ether_addr(match.mask->dst)) { 1125 NL_SET_ERR_MSG_MOD(extack, 1126 "Masked matching on destination MAC not supported"); 1127 err = -EINVAL; 1128 goto free_filter; 1129 } 1130 ether_addr_copy(filter->sid.dst_mac, match.key->dst); 1131 filter->sid.filtertype = STREAMID_TYPE_NULL; 1132 } 1133 1134 if (!is_zero_ether_addr(match.mask->src)) { 1135 if (!is_broadcast_ether_addr(match.mask->src)) { 1136 NL_SET_ERR_MSG_MOD(extack, 1137 "Masked matching on source MAC not supported"); 1138 err = -EINVAL; 1139 goto free_filter; 1140 } 1141 ether_addr_copy(filter->sid.src_mac, match.key->src); 1142 filter->sid.filtertype = STREAMID_TYPE_SMAC; 1143 } 1144 } else { 1145 NL_SET_ERR_MSG_MOD(extack, "Unsupported, must include ETH_ADDRS"); 1146 err = -EINVAL; 1147 goto free_filter; 1148 } 1149 1150 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN)) { 1151 struct flow_match_vlan match; 1152 1153 flow_rule_match_vlan(rule, &match); 1154 if (match.mask->vlan_priority) { 1155 if (match.mask->vlan_priority != 1156 (VLAN_PRIO_MASK >> VLAN_PRIO_SHIFT)) { 1157 NL_SET_ERR_MSG_MOD(extack, "Only full mask is supported for VLAN priority"); 1158 err = -EINVAL; 1159 goto free_filter; 1160 } 1161 } 1162 1163 if (match.mask->vlan_id) { 1164 if (match.mask->vlan_id != VLAN_VID_MASK) { 1165 NL_SET_ERR_MSG_MOD(extack, "Only full mask is supported for VLAN id"); 1166 err = -EINVAL; 1167 goto free_filter; 1168 } 1169 1170 filter->sid.vid = match.key->vlan_id; 1171 if (!filter->sid.vid) 1172 filter->sid.tagged = STREAMID_VLAN_UNTAGGED; 1173 else 1174 filter->sid.tagged = STREAMID_VLAN_TAGGED; 1175 } 1176 } else { 1177 filter->sid.tagged = STREAMID_VLAN_ALL; 1178 } 1179 1180 /* parsing gate action */ 1181 if (entryg->gate.index >= priv->psfp_cap.max_psfp_gate) { 1182 NL_SET_ERR_MSG_MOD(extack, "No Stream Gate resource!"); 1183 err = -ENOSPC; 1184 goto free_filter; 1185 } 1186 1187 if (entryg->gate.num_entries >= priv->psfp_cap.max_psfp_gatelist) { 1188 NL_SET_ERR_MSG_MOD(extack, "No Stream Gate resource!"); 1189 err = -ENOSPC; 1190 goto free_filter; 1191 } 1192 1193 entries_size = struct_size(sgi, entries, entryg->gate.num_entries); 1194 sgi = kzalloc(entries_size, GFP_KERNEL); 1195 if (!sgi) { 1196 err = -ENOMEM; 1197 goto free_filter; 1198 } 1199 1200 refcount_set(&sgi->refcount, 1); 1201 sgi->index = entryg->gate.index; 1202 sgi->init_ipv = entryg->gate.prio; 1203 sgi->basetime = entryg->gate.basetime; 1204 sgi->cycletime = entryg->gate.cycletime; 1205 sgi->num_entries = entryg->gate.num_entries; 1206 1207 e = sgi->entries; 1208 for (i = 0; i < entryg->gate.num_entries; i++) { 1209 e[i].gate_state = entryg->gate.entries[i].gate_state; 1210 e[i].interval = entryg->gate.entries[i].interval; 1211 e[i].ipv = entryg->gate.entries[i].ipv; 1212 e[i].maxoctets = entryg->gate.entries[i].maxoctets; 1213 } 1214 1215 filter->sgi_index = sgi->index; 1216 1217 sfi = kzalloc(sizeof(*sfi), GFP_KERNEL); 1218 if (!sfi) { 1219 err = -ENOMEM; 1220 goto free_gate; 1221 } 1222 1223 refcount_set(&sfi->refcount, 1); 1224 sfi->gate_id = sgi->index; 1225 sfi->meter_id = ENETC_PSFP_WILDCARD; 1226 1227 /* Flow meter and max frame size */ 1228 if (entryp) { 1229 if (entryp->police.rate_pkt_ps) { 1230 NL_SET_ERR_MSG_MOD(extack, "QoS offload not support packets per second"); 1231 err = -EOPNOTSUPP; 1232 goto free_sfi; 1233 } 1234 if (entryp->police.burst) { 1235 fmi = kzalloc(sizeof(*fmi), GFP_KERNEL); 1236 if (!fmi) { 1237 err = -ENOMEM; 1238 goto free_sfi; 1239 } 1240 refcount_set(&fmi->refcount, 1); 1241 fmi->cir = entryp->police.rate_bytes_ps; 1242 fmi->cbs = entryp->police.burst; 1243 fmi->index = entryp->police.index; 1244 filter->flags |= ENETC_PSFP_FLAGS_FMI; 1245 filter->fmi_index = fmi->index; 1246 sfi->meter_id = fmi->index; 1247 } 1248 1249 if (entryp->police.mtu) 1250 sfi->maxsdu = entryp->police.mtu; 1251 } 1252 1253 /* prio ref the filter prio */ 1254 if (f->common.prio && f->common.prio <= BIT(3)) 1255 sfi->prio = f->common.prio - 1; 1256 else 1257 sfi->prio = ENETC_PSFP_WILDCARD; 1258 1259 old_sfi = enetc_psfp_check_sfi(sfi); 1260 if (!old_sfi) { 1261 int index; 1262 1263 index = enetc_get_free_index(priv); 1264 if (sfi->handle < 0) { 1265 NL_SET_ERR_MSG_MOD(extack, "No Stream Filter resource!"); 1266 err = -ENOSPC; 1267 goto free_fmi; 1268 } 1269 1270 sfi->index = index; 1271 sfi->handle = index + HANDLE_OFFSET; 1272 /* Update the stream filter handle also */ 1273 filter->sid.handle = sfi->handle; 1274 filter->sfi_index = sfi->index; 1275 sfi_overwrite = 0; 1276 } else { 1277 filter->sfi_index = old_sfi->index; 1278 filter->sid.handle = old_sfi->handle; 1279 sfi_overwrite = 1; 1280 } 1281 1282 err = enetc_psfp_hw_set(priv, &filter->sid, 1283 sfi_overwrite ? NULL : sfi, sgi, fmi); 1284 if (err) 1285 goto free_fmi; 1286 1287 spin_lock(&epsfp.psfp_lock); 1288 if (filter->flags & ENETC_PSFP_FLAGS_FMI) { 1289 old_fmi = enetc_get_meter_by_index(filter->fmi_index); 1290 if (old_fmi) { 1291 fmi->refcount = old_fmi->refcount; 1292 refcount_set(&fmi->refcount, 1293 refcount_read(&old_fmi->refcount) + 1); 1294 hlist_del(&old_fmi->node); 1295 kfree(old_fmi); 1296 } 1297 hlist_add_head(&fmi->node, &epsfp.psfp_meter_list); 1298 } 1299 1300 /* Remove the old node if exist and update with a new node */ 1301 old_sgi = enetc_get_gate_by_index(filter->sgi_index); 1302 if (old_sgi) { 1303 refcount_set(&sgi->refcount, 1304 refcount_read(&old_sgi->refcount) + 1); 1305 hlist_del(&old_sgi->node); 1306 kfree(old_sgi); 1307 } 1308 1309 hlist_add_head(&sgi->node, &epsfp.psfp_gate_list); 1310 1311 if (!old_sfi) { 1312 hlist_add_head(&sfi->node, &epsfp.psfp_filter_list); 1313 set_bit(sfi->index, epsfp.psfp_sfi_bitmap); 1314 } else { 1315 kfree(sfi); 1316 refcount_inc(&old_sfi->refcount); 1317 } 1318 1319 old_filter = enetc_get_stream_by_index(filter->sid.index); 1320 if (old_filter) 1321 remove_one_chain(priv, old_filter); 1322 1323 filter->stats.lastused = jiffies; 1324 hlist_add_head(&filter->node, &epsfp.stream_list); 1325 1326 spin_unlock(&epsfp.psfp_lock); 1327 1328 return 0; 1329 1330 free_fmi: 1331 kfree(fmi); 1332 free_sfi: 1333 kfree(sfi); 1334 free_gate: 1335 kfree(sgi); 1336 free_filter: 1337 kfree(filter); 1338 1339 return err; 1340 } 1341 1342 static int enetc_config_clsflower(struct enetc_ndev_priv *priv, 1343 struct flow_cls_offload *cls_flower) 1344 { 1345 struct flow_rule *rule = flow_cls_offload_flow_rule(cls_flower); 1346 struct netlink_ext_ack *extack = cls_flower->common.extack; 1347 struct flow_dissector *dissector = rule->match.dissector; 1348 struct flow_action *action = &rule->action; 1349 struct flow_action_entry *entry; 1350 struct actions_fwd *fwd; 1351 u64 actions = 0; 1352 int i, err; 1353 1354 if (!flow_action_has_entries(action)) { 1355 NL_SET_ERR_MSG_MOD(extack, "At least one action is needed"); 1356 return -EINVAL; 1357 } 1358 1359 flow_action_for_each(i, entry, action) 1360 actions |= BIT(entry->id); 1361 1362 fwd = enetc_check_flow_actions(actions, dissector->used_keys); 1363 if (!fwd) { 1364 NL_SET_ERR_MSG_MOD(extack, "Unsupported filter type!"); 1365 return -EOPNOTSUPP; 1366 } 1367 1368 if (fwd->output & FILTER_ACTION_TYPE_PSFP) { 1369 err = enetc_psfp_parse_clsflower(priv, cls_flower); 1370 if (err) { 1371 NL_SET_ERR_MSG_MOD(extack, "Invalid PSFP inputs"); 1372 return err; 1373 } 1374 } else { 1375 NL_SET_ERR_MSG_MOD(extack, "Unsupported actions"); 1376 return -EOPNOTSUPP; 1377 } 1378 1379 return 0; 1380 } 1381 1382 static int enetc_psfp_destroy_clsflower(struct enetc_ndev_priv *priv, 1383 struct flow_cls_offload *f) 1384 { 1385 struct enetc_stream_filter *filter; 1386 struct netlink_ext_ack *extack = f->common.extack; 1387 int err; 1388 1389 if (f->common.chain_index >= priv->psfp_cap.max_streamid) { 1390 NL_SET_ERR_MSG_MOD(extack, "No Stream identify resource!"); 1391 return -ENOSPC; 1392 } 1393 1394 filter = enetc_get_stream_by_index(f->common.chain_index); 1395 if (!filter) 1396 return -EINVAL; 1397 1398 err = enetc_streamid_hw_set(priv, &filter->sid, false); 1399 if (err) 1400 return err; 1401 1402 remove_one_chain(priv, filter); 1403 1404 return 0; 1405 } 1406 1407 static int enetc_destroy_clsflower(struct enetc_ndev_priv *priv, 1408 struct flow_cls_offload *f) 1409 { 1410 return enetc_psfp_destroy_clsflower(priv, f); 1411 } 1412 1413 static int enetc_psfp_get_stats(struct enetc_ndev_priv *priv, 1414 struct flow_cls_offload *f) 1415 { 1416 struct psfp_streamfilter_counters counters = {}; 1417 struct enetc_stream_filter *filter; 1418 struct flow_stats stats = {}; 1419 int err; 1420 1421 filter = enetc_get_stream_by_index(f->common.chain_index); 1422 if (!filter) 1423 return -EINVAL; 1424 1425 err = enetc_streamcounter_hw_get(priv, filter->sfi_index, &counters); 1426 if (err) 1427 return -EINVAL; 1428 1429 spin_lock(&epsfp.psfp_lock); 1430 stats.pkts = counters.matching_frames_count + 1431 counters.not_passing_sdu_count - 1432 filter->stats.pkts; 1433 stats.drops = counters.not_passing_frames_count + 1434 counters.not_passing_sdu_count + 1435 counters.red_frames_count - 1436 filter->stats.drops; 1437 stats.lastused = filter->stats.lastused; 1438 filter->stats.pkts += stats.pkts; 1439 filter->stats.drops += stats.drops; 1440 spin_unlock(&epsfp.psfp_lock); 1441 1442 flow_stats_update(&f->stats, 0x0, stats.pkts, stats.drops, 1443 stats.lastused, FLOW_ACTION_HW_STATS_DELAYED); 1444 1445 return 0; 1446 } 1447 1448 static int enetc_setup_tc_cls_flower(struct enetc_ndev_priv *priv, 1449 struct flow_cls_offload *cls_flower) 1450 { 1451 switch (cls_flower->command) { 1452 case FLOW_CLS_REPLACE: 1453 return enetc_config_clsflower(priv, cls_flower); 1454 case FLOW_CLS_DESTROY: 1455 return enetc_destroy_clsflower(priv, cls_flower); 1456 case FLOW_CLS_STATS: 1457 return enetc_psfp_get_stats(priv, cls_flower); 1458 default: 1459 return -EOPNOTSUPP; 1460 } 1461 } 1462 1463 static inline void clean_psfp_sfi_bitmap(void) 1464 { 1465 bitmap_free(epsfp.psfp_sfi_bitmap); 1466 epsfp.psfp_sfi_bitmap = NULL; 1467 } 1468 1469 static void clean_stream_list(void) 1470 { 1471 struct enetc_stream_filter *s; 1472 struct hlist_node *tmp; 1473 1474 hlist_for_each_entry_safe(s, tmp, &epsfp.stream_list, node) { 1475 hlist_del(&s->node); 1476 kfree(s); 1477 } 1478 } 1479 1480 static void clean_sfi_list(void) 1481 { 1482 struct enetc_psfp_filter *sfi; 1483 struct hlist_node *tmp; 1484 1485 hlist_for_each_entry_safe(sfi, tmp, &epsfp.psfp_filter_list, node) { 1486 hlist_del(&sfi->node); 1487 kfree(sfi); 1488 } 1489 } 1490 1491 static void clean_sgi_list(void) 1492 { 1493 struct enetc_psfp_gate *sgi; 1494 struct hlist_node *tmp; 1495 1496 hlist_for_each_entry_safe(sgi, tmp, &epsfp.psfp_gate_list, node) { 1497 hlist_del(&sgi->node); 1498 kfree(sgi); 1499 } 1500 } 1501 1502 static void clean_psfp_all(void) 1503 { 1504 /* Disable all list nodes and free all memory */ 1505 clean_sfi_list(); 1506 clean_sgi_list(); 1507 clean_stream_list(); 1508 epsfp.dev_bitmap = 0; 1509 clean_psfp_sfi_bitmap(); 1510 } 1511 1512 int enetc_setup_tc_block_cb(enum tc_setup_type type, void *type_data, 1513 void *cb_priv) 1514 { 1515 struct net_device *ndev = cb_priv; 1516 1517 if (!tc_can_offload(ndev)) 1518 return -EOPNOTSUPP; 1519 1520 switch (type) { 1521 case TC_SETUP_CLSFLOWER: 1522 return enetc_setup_tc_cls_flower(netdev_priv(ndev), type_data); 1523 default: 1524 return -EOPNOTSUPP; 1525 } 1526 } 1527 1528 int enetc_psfp_init(struct enetc_ndev_priv *priv) 1529 { 1530 if (epsfp.psfp_sfi_bitmap) 1531 return 0; 1532 1533 epsfp.psfp_sfi_bitmap = bitmap_zalloc(priv->psfp_cap.max_psfp_filter, 1534 GFP_KERNEL); 1535 if (!epsfp.psfp_sfi_bitmap) 1536 return -ENOMEM; 1537 1538 spin_lock_init(&epsfp.psfp_lock); 1539 1540 if (list_empty(&enetc_block_cb_list)) 1541 epsfp.dev_bitmap = 0; 1542 1543 return 0; 1544 } 1545 1546 int enetc_psfp_clean(struct enetc_ndev_priv *priv) 1547 { 1548 if (!list_empty(&enetc_block_cb_list)) 1549 return -EBUSY; 1550 1551 clean_psfp_all(); 1552 1553 return 0; 1554 } 1555 1556 int enetc_setup_tc_psfp(struct net_device *ndev, void *type_data) 1557 { 1558 struct enetc_ndev_priv *priv = netdev_priv(ndev); 1559 struct flow_block_offload *f = type_data; 1560 int port, err; 1561 1562 err = flow_block_cb_setup_simple(f, &enetc_block_cb_list, 1563 enetc_setup_tc_block_cb, 1564 ndev, ndev, true); 1565 if (err) 1566 return err; 1567 1568 switch (f->command) { 1569 case FLOW_BLOCK_BIND: 1570 port = enetc_pf_to_port(priv->si->pdev); 1571 if (port < 0) 1572 return -EINVAL; 1573 1574 set_bit(port, &epsfp.dev_bitmap); 1575 break; 1576 case FLOW_BLOCK_UNBIND: 1577 port = enetc_pf_to_port(priv->si->pdev); 1578 if (port < 0) 1579 return -EINVAL; 1580 1581 clear_bit(port, &epsfp.dev_bitmap); 1582 if (!epsfp.dev_bitmap) 1583 clean_psfp_all(); 1584 break; 1585 } 1586 1587 return 0; 1588 } 1589