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 err; 469 470 if (sid->index >= priv->psfp_cap.max_streamid) 471 return -EINVAL; 472 473 if (sid->filtertype != STREAMID_TYPE_NULL && 474 sid->filtertype != STREAMID_TYPE_SMAC) 475 return -EOPNOTSUPP; 476 477 /* Disable operation before enable */ 478 cbd.index = cpu_to_le16((u16)sid->index); 479 cbd.cls = BDCR_CMD_STREAM_IDENTIFY; 480 cbd.status_flags = 0; 481 482 data_size = sizeof(struct streamid_data); 483 si_data = kzalloc(data_size, __GFP_DMA | GFP_KERNEL); 484 cbd.length = cpu_to_le16(data_size); 485 486 dma = dma_map_single(&priv->si->pdev->dev, si_data, 487 data_size, DMA_FROM_DEVICE); 488 if (dma_mapping_error(&priv->si->pdev->dev, dma)) { 489 netdev_err(priv->si->ndev, "DMA mapping failed!\n"); 490 kfree(si_data); 491 return -ENOMEM; 492 } 493 494 cbd.addr[0] = cpu_to_le32(lower_32_bits(dma)); 495 cbd.addr[1] = cpu_to_le32(upper_32_bits(dma)); 496 eth_broadcast_addr(si_data->dmac); 497 si_data->vid_vidm_tg = (ENETC_CBDR_SID_VID_MASK 498 + ((0x3 << 14) | ENETC_CBDR_SID_VIDM)); 499 500 si_conf = &cbd.sid_set; 501 /* Only one port supported for one entry, set itself */ 502 si_conf->iports = cpu_to_le32(1 << enetc_pf_to_port(priv->si->pdev)); 503 si_conf->id_type = 1; 504 si_conf->oui[2] = 0x0; 505 si_conf->oui[1] = 0x80; 506 si_conf->oui[0] = 0xC2; 507 508 err = enetc_send_cmd(priv->si, &cbd); 509 if (err) 510 return -EINVAL; 511 512 if (!enable) { 513 kfree(si_data); 514 return 0; 515 } 516 517 /* Enable the entry overwrite again incase space flushed by hardware */ 518 memset(&cbd, 0, sizeof(cbd)); 519 520 cbd.index = cpu_to_le16((u16)sid->index); 521 cbd.cmd = 0; 522 cbd.cls = BDCR_CMD_STREAM_IDENTIFY; 523 cbd.status_flags = 0; 524 525 si_conf->en = 0x80; 526 si_conf->stream_handle = cpu_to_le32(sid->handle); 527 si_conf->iports = cpu_to_le32(1 << enetc_pf_to_port(priv->si->pdev)); 528 si_conf->id_type = sid->filtertype; 529 si_conf->oui[2] = 0x0; 530 si_conf->oui[1] = 0x80; 531 si_conf->oui[0] = 0xC2; 532 533 memset(si_data, 0, data_size); 534 535 cbd.length = cpu_to_le16(data_size); 536 537 cbd.addr[0] = cpu_to_le32(lower_32_bits(dma)); 538 cbd.addr[1] = cpu_to_le32(upper_32_bits(dma)); 539 540 /* VIDM default to be 1. 541 * VID Match. If set (b1) then the VID must match, otherwise 542 * any VID is considered a match. VIDM setting is only used 543 * when TG is set to b01. 544 */ 545 if (si_conf->id_type == STREAMID_TYPE_NULL) { 546 ether_addr_copy(si_data->dmac, sid->dst_mac); 547 si_data->vid_vidm_tg = (sid->vid & ENETC_CBDR_SID_VID_MASK) + 548 ((((u16)(sid->tagged) & 0x3) << 14) 549 | ENETC_CBDR_SID_VIDM); 550 } else if (si_conf->id_type == STREAMID_TYPE_SMAC) { 551 ether_addr_copy(si_data->smac, sid->src_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 } 556 557 err = enetc_send_cmd(priv->si, &cbd); 558 kfree(si_data); 559 560 return err; 561 } 562 563 /* Stream Filter Instance Set Descriptor */ 564 static int enetc_streamfilter_hw_set(struct enetc_ndev_priv *priv, 565 struct enetc_psfp_filter *sfi, 566 u8 enable) 567 { 568 struct enetc_cbd cbd = {.cmd = 0}; 569 struct sfi_conf *sfi_config; 570 571 cbd.index = cpu_to_le16(sfi->index); 572 cbd.cls = BDCR_CMD_STREAM_FILTER; 573 cbd.status_flags = 0x80; 574 cbd.length = cpu_to_le16(1); 575 576 sfi_config = &cbd.sfi_conf; 577 if (!enable) 578 goto exit; 579 580 sfi_config->en = 0x80; 581 582 if (sfi->handle >= 0) { 583 sfi_config->stream_handle = 584 cpu_to_le32(sfi->handle); 585 sfi_config->sthm |= 0x80; 586 } 587 588 sfi_config->sg_inst_table_index = cpu_to_le16(sfi->gate_id); 589 sfi_config->input_ports = 590 cpu_to_le32(1 << enetc_pf_to_port(priv->si->pdev)); 591 592 /* The priority value which may be matched against the 593 * frame’s priority value to determine a match for this entry. 594 */ 595 if (sfi->prio >= 0) 596 sfi_config->multi |= (sfi->prio & 0x7) | 0x8; 597 598 /* Filter Type. Identifies the contents of the MSDU/FM_INST_INDEX 599 * field as being either an MSDU value or an index into the Flow 600 * Meter Instance table. 601 */ 602 if (sfi->maxsdu) { 603 sfi_config->msdu = 604 cpu_to_le16(sfi->maxsdu); 605 sfi_config->multi |= 0x40; 606 } 607 608 if (sfi->meter_id >= 0) { 609 sfi_config->fm_inst_table_index = cpu_to_le16(sfi->meter_id); 610 sfi_config->multi |= 0x80; 611 } 612 613 exit: 614 return enetc_send_cmd(priv->si, &cbd); 615 } 616 617 static int enetc_streamcounter_hw_get(struct enetc_ndev_priv *priv, 618 u32 index, 619 struct psfp_streamfilter_counters *cnt) 620 { 621 struct enetc_cbd cbd = { .cmd = 2 }; 622 struct sfi_counter_data *data_buf; 623 dma_addr_t dma; 624 u16 data_size; 625 int err; 626 627 cbd.index = cpu_to_le16((u16)index); 628 cbd.cmd = 2; 629 cbd.cls = BDCR_CMD_STREAM_FILTER; 630 cbd.status_flags = 0; 631 632 data_size = sizeof(struct sfi_counter_data); 633 data_buf = kzalloc(data_size, __GFP_DMA | GFP_KERNEL); 634 if (!data_buf) 635 return -ENOMEM; 636 637 dma = dma_map_single(&priv->si->pdev->dev, data_buf, 638 data_size, DMA_FROM_DEVICE); 639 if (dma_mapping_error(&priv->si->pdev->dev, dma)) { 640 netdev_err(priv->si->ndev, "DMA mapping failed!\n"); 641 err = -ENOMEM; 642 goto exit; 643 } 644 cbd.addr[0] = cpu_to_le32(lower_32_bits(dma)); 645 cbd.addr[1] = cpu_to_le32(upper_32_bits(dma)); 646 647 cbd.length = cpu_to_le16(data_size); 648 649 err = enetc_send_cmd(priv->si, &cbd); 650 if (err) 651 goto exit; 652 653 cnt->matching_frames_count = ((u64)data_buf->matchh << 32) + 654 data_buf->matchl; 655 656 cnt->not_passing_sdu_count = ((u64)data_buf->msdu_droph << 32) + 657 data_buf->msdu_dropl; 658 659 cnt->passing_sdu_count = cnt->matching_frames_count 660 - cnt->not_passing_sdu_count; 661 662 cnt->not_passing_frames_count = 663 ((u64)data_buf->stream_gate_droph << 32) + 664 data_buf->stream_gate_dropl; 665 666 cnt->passing_frames_count = cnt->matching_frames_count - 667 cnt->not_passing_sdu_count - 668 cnt->not_passing_frames_count; 669 670 cnt->red_frames_count = ((u64)data_buf->flow_meter_droph << 32) + 671 data_buf->flow_meter_dropl; 672 673 exit: 674 kfree(data_buf); 675 return err; 676 } 677 678 static u64 get_ptp_now(struct enetc_hw *hw) 679 { 680 u64 now_lo, now_hi, now; 681 682 now_lo = enetc_rd(hw, ENETC_SICTR0); 683 now_hi = enetc_rd(hw, ENETC_SICTR1); 684 now = now_lo | now_hi << 32; 685 686 return now; 687 } 688 689 static int get_start_ns(u64 now, u64 cycle, u64 *start) 690 { 691 u64 n; 692 693 if (!cycle) 694 return -EFAULT; 695 696 n = div64_u64(now, cycle); 697 698 *start = (n + 1) * cycle; 699 700 return 0; 701 } 702 703 /* Stream Gate Instance Set Descriptor */ 704 static int enetc_streamgate_hw_set(struct enetc_ndev_priv *priv, 705 struct enetc_psfp_gate *sgi, 706 u8 enable) 707 { 708 struct enetc_cbd cbd = { .cmd = 0 }; 709 struct sgi_table *sgi_config; 710 struct sgcl_conf *sgcl_config; 711 struct sgcl_data *sgcl_data; 712 struct sgce *sgce; 713 dma_addr_t dma; 714 u16 data_size; 715 int err, i; 716 u64 now; 717 718 cbd.index = cpu_to_le16(sgi->index); 719 cbd.cmd = 0; 720 cbd.cls = BDCR_CMD_STREAM_GCL; 721 cbd.status_flags = 0x80; 722 723 /* disable */ 724 if (!enable) 725 return enetc_send_cmd(priv->si, &cbd); 726 727 if (!sgi->num_entries) 728 return 0; 729 730 if (sgi->num_entries > priv->psfp_cap.max_psfp_gatelist || 731 !sgi->cycletime) 732 return -EINVAL; 733 734 /* enable */ 735 sgi_config = &cbd.sgi_table; 736 737 /* Keep open before gate list start */ 738 sgi_config->ocgtst = 0x80; 739 740 sgi_config->oipv = (sgi->init_ipv < 0) ? 741 0x0 : ((sgi->init_ipv & 0x7) | 0x8); 742 743 sgi_config->en = 0x80; 744 745 /* Basic config */ 746 err = enetc_send_cmd(priv->si, &cbd); 747 if (err) 748 return -EINVAL; 749 750 memset(&cbd, 0, sizeof(cbd)); 751 752 cbd.index = cpu_to_le16(sgi->index); 753 cbd.cmd = 1; 754 cbd.cls = BDCR_CMD_STREAM_GCL; 755 cbd.status_flags = 0; 756 757 sgcl_config = &cbd.sgcl_conf; 758 759 sgcl_config->acl_len = (sgi->num_entries - 1) & 0x3; 760 761 data_size = struct_size(sgcl_data, sgcl, sgi->num_entries); 762 763 sgcl_data = kzalloc(data_size, __GFP_DMA | GFP_KERNEL); 764 if (!sgcl_data) 765 return -ENOMEM; 766 767 cbd.length = cpu_to_le16(data_size); 768 769 dma = dma_map_single(&priv->si->pdev->dev, 770 sgcl_data, data_size, 771 DMA_FROM_DEVICE); 772 if (dma_mapping_error(&priv->si->pdev->dev, dma)) { 773 netdev_err(priv->si->ndev, "DMA mapping failed!\n"); 774 kfree(sgcl_data); 775 return -ENOMEM; 776 } 777 778 cbd.addr[0] = cpu_to_le32(lower_32_bits(dma)); 779 cbd.addr[1] = cpu_to_le32(upper_32_bits(dma)); 780 781 sgce = &sgcl_data->sgcl[0]; 782 783 sgcl_config->agtst = 0x80; 784 785 sgcl_data->ct = sgi->cycletime; 786 sgcl_data->cte = sgi->cycletimext; 787 788 if (sgi->init_ipv >= 0) 789 sgcl_config->aipv = (sgi->init_ipv & 0x7) | 0x8; 790 791 for (i = 0; i < sgi->num_entries; i++) { 792 struct action_gate_entry *from = &sgi->entries[i]; 793 struct sgce *to = &sgce[i]; 794 795 if (from->gate_state) 796 to->multi |= 0x10; 797 798 if (from->ipv >= 0) 799 to->multi |= ((from->ipv & 0x7) << 5) | 0x08; 800 801 if (from->maxoctets >= 0) { 802 to->multi |= 0x01; 803 to->msdu[0] = from->maxoctets & 0xFF; 804 to->msdu[1] = (from->maxoctets >> 8) & 0xFF; 805 to->msdu[2] = (from->maxoctets >> 16) & 0xFF; 806 } 807 808 to->interval = from->interval; 809 } 810 811 /* If basetime is less than now, calculate start time */ 812 now = get_ptp_now(&priv->si->hw); 813 814 if (sgi->basetime < now) { 815 u64 start; 816 817 err = get_start_ns(now, sgi->cycletime, &start); 818 if (err) 819 goto exit; 820 sgcl_data->btl = lower_32_bits(start); 821 sgcl_data->bth = upper_32_bits(start); 822 } else { 823 u32 hi, lo; 824 825 hi = upper_32_bits(sgi->basetime); 826 lo = lower_32_bits(sgi->basetime); 827 sgcl_data->bth = hi; 828 sgcl_data->btl = lo; 829 } 830 831 err = enetc_send_cmd(priv->si, &cbd); 832 833 exit: 834 kfree(sgcl_data); 835 836 return err; 837 } 838 839 static int enetc_flowmeter_hw_set(struct enetc_ndev_priv *priv, 840 struct enetc_psfp_meter *fmi, 841 u8 enable) 842 { 843 struct enetc_cbd cbd = { .cmd = 0 }; 844 struct fmi_conf *fmi_config; 845 u64 temp = 0; 846 847 cbd.index = cpu_to_le16((u16)fmi->index); 848 cbd.cls = BDCR_CMD_FLOW_METER; 849 cbd.status_flags = 0x80; 850 851 if (!enable) 852 return enetc_send_cmd(priv->si, &cbd); 853 854 fmi_config = &cbd.fmi_conf; 855 fmi_config->en = 0x80; 856 857 if (fmi->cir) { 858 temp = (u64)8000 * fmi->cir; 859 temp = div_u64(temp, 3725); 860 } 861 862 fmi_config->cir = cpu_to_le32((u32)temp); 863 fmi_config->cbs = cpu_to_le32(fmi->cbs); 864 865 /* Default for eir ebs disable */ 866 fmi_config->eir = 0; 867 fmi_config->ebs = 0; 868 869 /* Default: 870 * mark red disable 871 * drop on yellow disable 872 * color mode disable 873 * couple flag disable 874 */ 875 fmi_config->conf = 0; 876 877 return enetc_send_cmd(priv->si, &cbd); 878 } 879 880 static struct enetc_stream_filter *enetc_get_stream_by_index(u32 index) 881 { 882 struct enetc_stream_filter *f; 883 884 hlist_for_each_entry(f, &epsfp.stream_list, node) 885 if (f->sid.index == index) 886 return f; 887 888 return NULL; 889 } 890 891 static struct enetc_psfp_gate *enetc_get_gate_by_index(u32 index) 892 { 893 struct enetc_psfp_gate *g; 894 895 hlist_for_each_entry(g, &epsfp.psfp_gate_list, node) 896 if (g->index == index) 897 return g; 898 899 return NULL; 900 } 901 902 static struct enetc_psfp_filter *enetc_get_filter_by_index(u32 index) 903 { 904 struct enetc_psfp_filter *s; 905 906 hlist_for_each_entry(s, &epsfp.psfp_filter_list, node) 907 if (s->index == index) 908 return s; 909 910 return NULL; 911 } 912 913 static struct enetc_psfp_meter *enetc_get_meter_by_index(u32 index) 914 { 915 struct enetc_psfp_meter *m; 916 917 hlist_for_each_entry(m, &epsfp.psfp_meter_list, node) 918 if (m->index == index) 919 return m; 920 921 return NULL; 922 } 923 924 static struct enetc_psfp_filter 925 *enetc_psfp_check_sfi(struct enetc_psfp_filter *sfi) 926 { 927 struct enetc_psfp_filter *s; 928 929 hlist_for_each_entry(s, &epsfp.psfp_filter_list, node) 930 if (s->gate_id == sfi->gate_id && 931 s->prio == sfi->prio && 932 s->maxsdu == sfi->maxsdu && 933 s->meter_id == sfi->meter_id) 934 return s; 935 936 return NULL; 937 } 938 939 static int enetc_get_free_index(struct enetc_ndev_priv *priv) 940 { 941 u32 max_size = priv->psfp_cap.max_psfp_filter; 942 unsigned long index; 943 944 index = find_first_zero_bit(epsfp.psfp_sfi_bitmap, max_size); 945 if (index == max_size) 946 return -1; 947 948 return index; 949 } 950 951 static void stream_filter_unref(struct enetc_ndev_priv *priv, u32 index) 952 { 953 struct enetc_psfp_filter *sfi; 954 u8 z; 955 956 sfi = enetc_get_filter_by_index(index); 957 WARN_ON(!sfi); 958 z = refcount_dec_and_test(&sfi->refcount); 959 960 if (z) { 961 enetc_streamfilter_hw_set(priv, sfi, false); 962 hlist_del(&sfi->node); 963 kfree(sfi); 964 clear_bit(index, epsfp.psfp_sfi_bitmap); 965 } 966 } 967 968 static void stream_gate_unref(struct enetc_ndev_priv *priv, u32 index) 969 { 970 struct enetc_psfp_gate *sgi; 971 u8 z; 972 973 sgi = enetc_get_gate_by_index(index); 974 WARN_ON(!sgi); 975 z = refcount_dec_and_test(&sgi->refcount); 976 if (z) { 977 enetc_streamgate_hw_set(priv, sgi, false); 978 hlist_del(&sgi->node); 979 kfree(sgi); 980 } 981 } 982 983 static void flow_meter_unref(struct enetc_ndev_priv *priv, u32 index) 984 { 985 struct enetc_psfp_meter *fmi; 986 u8 z; 987 988 fmi = enetc_get_meter_by_index(index); 989 WARN_ON(!fmi); 990 z = refcount_dec_and_test(&fmi->refcount); 991 if (z) { 992 enetc_flowmeter_hw_set(priv, fmi, false); 993 hlist_del(&fmi->node); 994 kfree(fmi); 995 } 996 } 997 998 static void remove_one_chain(struct enetc_ndev_priv *priv, 999 struct enetc_stream_filter *filter) 1000 { 1001 if (filter->flags & ENETC_PSFP_FLAGS_FMI) 1002 flow_meter_unref(priv, filter->fmi_index); 1003 1004 stream_gate_unref(priv, filter->sgi_index); 1005 stream_filter_unref(priv, filter->sfi_index); 1006 1007 hlist_del(&filter->node); 1008 kfree(filter); 1009 } 1010 1011 static int enetc_psfp_hw_set(struct enetc_ndev_priv *priv, 1012 struct enetc_streamid *sid, 1013 struct enetc_psfp_filter *sfi, 1014 struct enetc_psfp_gate *sgi, 1015 struct enetc_psfp_meter *fmi) 1016 { 1017 int err; 1018 1019 err = enetc_streamid_hw_set(priv, sid, true); 1020 if (err) 1021 return err; 1022 1023 if (sfi) { 1024 err = enetc_streamfilter_hw_set(priv, sfi, true); 1025 if (err) 1026 goto revert_sid; 1027 } 1028 1029 err = enetc_streamgate_hw_set(priv, sgi, true); 1030 if (err) 1031 goto revert_sfi; 1032 1033 if (fmi) { 1034 err = enetc_flowmeter_hw_set(priv, fmi, true); 1035 if (err) 1036 goto revert_sgi; 1037 } 1038 1039 return 0; 1040 1041 revert_sgi: 1042 enetc_streamgate_hw_set(priv, sgi, false); 1043 revert_sfi: 1044 if (sfi) 1045 enetc_streamfilter_hw_set(priv, sfi, false); 1046 revert_sid: 1047 enetc_streamid_hw_set(priv, sid, false); 1048 return err; 1049 } 1050 1051 static struct actions_fwd *enetc_check_flow_actions(u64 acts, 1052 unsigned int inputkeys) 1053 { 1054 int i; 1055 1056 for (i = 0; i < ARRAY_SIZE(enetc_act_fwd); i++) 1057 if (acts == enetc_act_fwd[i].actions && 1058 inputkeys & enetc_act_fwd[i].keys) 1059 return &enetc_act_fwd[i]; 1060 1061 return NULL; 1062 } 1063 1064 static int enetc_psfp_parse_clsflower(struct enetc_ndev_priv *priv, 1065 struct flow_cls_offload *f) 1066 { 1067 struct flow_action_entry *entryg = NULL, *entryp = NULL; 1068 struct flow_rule *rule = flow_cls_offload_flow_rule(f); 1069 struct netlink_ext_ack *extack = f->common.extack; 1070 struct enetc_stream_filter *filter, *old_filter; 1071 struct enetc_psfp_meter *fmi = NULL, *old_fmi; 1072 struct enetc_psfp_filter *sfi, *old_sfi; 1073 struct enetc_psfp_gate *sgi, *old_sgi; 1074 struct flow_action_entry *entry; 1075 struct action_gate_entry *e; 1076 u8 sfi_overwrite = 0; 1077 int entries_size; 1078 int i, err; 1079 1080 if (f->common.chain_index >= priv->psfp_cap.max_streamid) { 1081 NL_SET_ERR_MSG_MOD(extack, "No Stream identify resource!"); 1082 return -ENOSPC; 1083 } 1084 1085 flow_action_for_each(i, entry, &rule->action) 1086 if (entry->id == FLOW_ACTION_GATE) 1087 entryg = entry; 1088 else if (entry->id == FLOW_ACTION_POLICE) 1089 entryp = entry; 1090 1091 /* Not support without gate action */ 1092 if (!entryg) 1093 return -EINVAL; 1094 1095 filter = kzalloc(sizeof(*filter), GFP_KERNEL); 1096 if (!filter) 1097 return -ENOMEM; 1098 1099 filter->sid.index = f->common.chain_index; 1100 1101 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) { 1102 struct flow_match_eth_addrs match; 1103 1104 flow_rule_match_eth_addrs(rule, &match); 1105 1106 if (!is_zero_ether_addr(match.mask->dst) && 1107 !is_zero_ether_addr(match.mask->src)) { 1108 NL_SET_ERR_MSG_MOD(extack, 1109 "Cannot match on both source and destination MAC"); 1110 err = -EINVAL; 1111 goto free_filter; 1112 } 1113 1114 if (!is_zero_ether_addr(match.mask->dst)) { 1115 if (!is_broadcast_ether_addr(match.mask->dst)) { 1116 NL_SET_ERR_MSG_MOD(extack, 1117 "Masked matching on destination MAC not supported"); 1118 err = -EINVAL; 1119 goto free_filter; 1120 } 1121 ether_addr_copy(filter->sid.dst_mac, match.key->dst); 1122 filter->sid.filtertype = STREAMID_TYPE_NULL; 1123 } 1124 1125 if (!is_zero_ether_addr(match.mask->src)) { 1126 if (!is_broadcast_ether_addr(match.mask->src)) { 1127 NL_SET_ERR_MSG_MOD(extack, 1128 "Masked matching on source MAC not supported"); 1129 err = -EINVAL; 1130 goto free_filter; 1131 } 1132 ether_addr_copy(filter->sid.src_mac, match.key->src); 1133 filter->sid.filtertype = STREAMID_TYPE_SMAC; 1134 } 1135 } else { 1136 NL_SET_ERR_MSG_MOD(extack, "Unsupported, must include ETH_ADDRS"); 1137 err = -EINVAL; 1138 goto free_filter; 1139 } 1140 1141 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN)) { 1142 struct flow_match_vlan match; 1143 1144 flow_rule_match_vlan(rule, &match); 1145 if (match.mask->vlan_priority) { 1146 if (match.mask->vlan_priority != 1147 (VLAN_PRIO_MASK >> VLAN_PRIO_SHIFT)) { 1148 NL_SET_ERR_MSG_MOD(extack, "Only full mask is supported for VLAN priority"); 1149 err = -EINVAL; 1150 goto free_filter; 1151 } 1152 } 1153 1154 if (match.mask->vlan_id) { 1155 if (match.mask->vlan_id != VLAN_VID_MASK) { 1156 NL_SET_ERR_MSG_MOD(extack, "Only full mask is supported for VLAN id"); 1157 err = -EINVAL; 1158 goto free_filter; 1159 } 1160 1161 filter->sid.vid = match.key->vlan_id; 1162 if (!filter->sid.vid) 1163 filter->sid.tagged = STREAMID_VLAN_UNTAGGED; 1164 else 1165 filter->sid.tagged = STREAMID_VLAN_TAGGED; 1166 } 1167 } else { 1168 filter->sid.tagged = STREAMID_VLAN_ALL; 1169 } 1170 1171 /* parsing gate action */ 1172 if (entryg->gate.index >= priv->psfp_cap.max_psfp_gate) { 1173 NL_SET_ERR_MSG_MOD(extack, "No Stream Gate resource!"); 1174 err = -ENOSPC; 1175 goto free_filter; 1176 } 1177 1178 if (entryg->gate.num_entries >= priv->psfp_cap.max_psfp_gatelist) { 1179 NL_SET_ERR_MSG_MOD(extack, "No Stream Gate resource!"); 1180 err = -ENOSPC; 1181 goto free_filter; 1182 } 1183 1184 entries_size = struct_size(sgi, entries, entryg->gate.num_entries); 1185 sgi = kzalloc(entries_size, GFP_KERNEL); 1186 if (!sgi) { 1187 err = -ENOMEM; 1188 goto free_filter; 1189 } 1190 1191 refcount_set(&sgi->refcount, 1); 1192 sgi->index = entryg->gate.index; 1193 sgi->init_ipv = entryg->gate.prio; 1194 sgi->basetime = entryg->gate.basetime; 1195 sgi->cycletime = entryg->gate.cycletime; 1196 sgi->num_entries = entryg->gate.num_entries; 1197 1198 e = sgi->entries; 1199 for (i = 0; i < entryg->gate.num_entries; i++) { 1200 e[i].gate_state = entryg->gate.entries[i].gate_state; 1201 e[i].interval = entryg->gate.entries[i].interval; 1202 e[i].ipv = entryg->gate.entries[i].ipv; 1203 e[i].maxoctets = entryg->gate.entries[i].maxoctets; 1204 } 1205 1206 filter->sgi_index = sgi->index; 1207 1208 sfi = kzalloc(sizeof(*sfi), GFP_KERNEL); 1209 if (!sfi) { 1210 err = -ENOMEM; 1211 goto free_gate; 1212 } 1213 1214 refcount_set(&sfi->refcount, 1); 1215 sfi->gate_id = sgi->index; 1216 sfi->meter_id = ENETC_PSFP_WILDCARD; 1217 1218 /* Flow meter and max frame size */ 1219 if (entryp) { 1220 if (entryp->police.rate_pkt_ps) { 1221 NL_SET_ERR_MSG_MOD(extack, "QoS offload not support packets per second"); 1222 err = -EOPNOTSUPP; 1223 goto free_sfi; 1224 } 1225 if (entryp->police.burst) { 1226 fmi = kzalloc(sizeof(*fmi), GFP_KERNEL); 1227 if (!fmi) { 1228 err = -ENOMEM; 1229 goto free_sfi; 1230 } 1231 refcount_set(&fmi->refcount, 1); 1232 fmi->cir = entryp->police.rate_bytes_ps; 1233 fmi->cbs = entryp->police.burst; 1234 fmi->index = entryp->police.index; 1235 filter->flags |= ENETC_PSFP_FLAGS_FMI; 1236 filter->fmi_index = fmi->index; 1237 sfi->meter_id = fmi->index; 1238 } 1239 1240 if (entryp->police.mtu) 1241 sfi->maxsdu = entryp->police.mtu; 1242 } 1243 1244 /* prio ref the filter prio */ 1245 if (f->common.prio && f->common.prio <= BIT(3)) 1246 sfi->prio = f->common.prio - 1; 1247 else 1248 sfi->prio = ENETC_PSFP_WILDCARD; 1249 1250 old_sfi = enetc_psfp_check_sfi(sfi); 1251 if (!old_sfi) { 1252 int index; 1253 1254 index = enetc_get_free_index(priv); 1255 if (sfi->handle < 0) { 1256 NL_SET_ERR_MSG_MOD(extack, "No Stream Filter resource!"); 1257 err = -ENOSPC; 1258 goto free_fmi; 1259 } 1260 1261 sfi->index = index; 1262 sfi->handle = index + HANDLE_OFFSET; 1263 /* Update the stream filter handle also */ 1264 filter->sid.handle = sfi->handle; 1265 filter->sfi_index = sfi->index; 1266 sfi_overwrite = 0; 1267 } else { 1268 filter->sfi_index = old_sfi->index; 1269 filter->sid.handle = old_sfi->handle; 1270 sfi_overwrite = 1; 1271 } 1272 1273 err = enetc_psfp_hw_set(priv, &filter->sid, 1274 sfi_overwrite ? NULL : sfi, sgi, fmi); 1275 if (err) 1276 goto free_fmi; 1277 1278 spin_lock(&epsfp.psfp_lock); 1279 if (filter->flags & ENETC_PSFP_FLAGS_FMI) { 1280 old_fmi = enetc_get_meter_by_index(filter->fmi_index); 1281 if (old_fmi) { 1282 fmi->refcount = old_fmi->refcount; 1283 refcount_set(&fmi->refcount, 1284 refcount_read(&old_fmi->refcount) + 1); 1285 hlist_del(&old_fmi->node); 1286 kfree(old_fmi); 1287 } 1288 hlist_add_head(&fmi->node, &epsfp.psfp_meter_list); 1289 } 1290 1291 /* Remove the old node if exist and update with a new node */ 1292 old_sgi = enetc_get_gate_by_index(filter->sgi_index); 1293 if (old_sgi) { 1294 refcount_set(&sgi->refcount, 1295 refcount_read(&old_sgi->refcount) + 1); 1296 hlist_del(&old_sgi->node); 1297 kfree(old_sgi); 1298 } 1299 1300 hlist_add_head(&sgi->node, &epsfp.psfp_gate_list); 1301 1302 if (!old_sfi) { 1303 hlist_add_head(&sfi->node, &epsfp.psfp_filter_list); 1304 set_bit(sfi->index, epsfp.psfp_sfi_bitmap); 1305 } else { 1306 kfree(sfi); 1307 refcount_inc(&old_sfi->refcount); 1308 } 1309 1310 old_filter = enetc_get_stream_by_index(filter->sid.index); 1311 if (old_filter) 1312 remove_one_chain(priv, old_filter); 1313 1314 filter->stats.lastused = jiffies; 1315 hlist_add_head(&filter->node, &epsfp.stream_list); 1316 1317 spin_unlock(&epsfp.psfp_lock); 1318 1319 return 0; 1320 1321 free_fmi: 1322 kfree(fmi); 1323 free_sfi: 1324 kfree(sfi); 1325 free_gate: 1326 kfree(sgi); 1327 free_filter: 1328 kfree(filter); 1329 1330 return err; 1331 } 1332 1333 static int enetc_config_clsflower(struct enetc_ndev_priv *priv, 1334 struct flow_cls_offload *cls_flower) 1335 { 1336 struct flow_rule *rule = flow_cls_offload_flow_rule(cls_flower); 1337 struct netlink_ext_ack *extack = cls_flower->common.extack; 1338 struct flow_dissector *dissector = rule->match.dissector; 1339 struct flow_action *action = &rule->action; 1340 struct flow_action_entry *entry; 1341 struct actions_fwd *fwd; 1342 u64 actions = 0; 1343 int i, err; 1344 1345 if (!flow_action_has_entries(action)) { 1346 NL_SET_ERR_MSG_MOD(extack, "At least one action is needed"); 1347 return -EINVAL; 1348 } 1349 1350 flow_action_for_each(i, entry, action) 1351 actions |= BIT(entry->id); 1352 1353 fwd = enetc_check_flow_actions(actions, dissector->used_keys); 1354 if (!fwd) { 1355 NL_SET_ERR_MSG_MOD(extack, "Unsupported filter type!"); 1356 return -EOPNOTSUPP; 1357 } 1358 1359 if (fwd->output & FILTER_ACTION_TYPE_PSFP) { 1360 err = enetc_psfp_parse_clsflower(priv, cls_flower); 1361 if (err) { 1362 NL_SET_ERR_MSG_MOD(extack, "Invalid PSFP inputs"); 1363 return err; 1364 } 1365 } else { 1366 NL_SET_ERR_MSG_MOD(extack, "Unsupported actions"); 1367 return -EOPNOTSUPP; 1368 } 1369 1370 return 0; 1371 } 1372 1373 static int enetc_psfp_destroy_clsflower(struct enetc_ndev_priv *priv, 1374 struct flow_cls_offload *f) 1375 { 1376 struct enetc_stream_filter *filter; 1377 struct netlink_ext_ack *extack = f->common.extack; 1378 int err; 1379 1380 if (f->common.chain_index >= priv->psfp_cap.max_streamid) { 1381 NL_SET_ERR_MSG_MOD(extack, "No Stream identify resource!"); 1382 return -ENOSPC; 1383 } 1384 1385 filter = enetc_get_stream_by_index(f->common.chain_index); 1386 if (!filter) 1387 return -EINVAL; 1388 1389 err = enetc_streamid_hw_set(priv, &filter->sid, false); 1390 if (err) 1391 return err; 1392 1393 remove_one_chain(priv, filter); 1394 1395 return 0; 1396 } 1397 1398 static int enetc_destroy_clsflower(struct enetc_ndev_priv *priv, 1399 struct flow_cls_offload *f) 1400 { 1401 return enetc_psfp_destroy_clsflower(priv, f); 1402 } 1403 1404 static int enetc_psfp_get_stats(struct enetc_ndev_priv *priv, 1405 struct flow_cls_offload *f) 1406 { 1407 struct psfp_streamfilter_counters counters = {}; 1408 struct enetc_stream_filter *filter; 1409 struct flow_stats stats = {}; 1410 int err; 1411 1412 filter = enetc_get_stream_by_index(f->common.chain_index); 1413 if (!filter) 1414 return -EINVAL; 1415 1416 err = enetc_streamcounter_hw_get(priv, filter->sfi_index, &counters); 1417 if (err) 1418 return -EINVAL; 1419 1420 spin_lock(&epsfp.psfp_lock); 1421 stats.pkts = counters.matching_frames_count + 1422 counters.not_passing_sdu_count - 1423 filter->stats.pkts; 1424 stats.drops = counters.not_passing_frames_count + 1425 counters.not_passing_sdu_count + 1426 counters.red_frames_count - 1427 filter->stats.drops; 1428 stats.lastused = filter->stats.lastused; 1429 filter->stats.pkts += stats.pkts; 1430 filter->stats.drops += stats.drops; 1431 spin_unlock(&epsfp.psfp_lock); 1432 1433 flow_stats_update(&f->stats, 0x0, stats.pkts, stats.drops, 1434 stats.lastused, FLOW_ACTION_HW_STATS_DELAYED); 1435 1436 return 0; 1437 } 1438 1439 static int enetc_setup_tc_cls_flower(struct enetc_ndev_priv *priv, 1440 struct flow_cls_offload *cls_flower) 1441 { 1442 switch (cls_flower->command) { 1443 case FLOW_CLS_REPLACE: 1444 return enetc_config_clsflower(priv, cls_flower); 1445 case FLOW_CLS_DESTROY: 1446 return enetc_destroy_clsflower(priv, cls_flower); 1447 case FLOW_CLS_STATS: 1448 return enetc_psfp_get_stats(priv, cls_flower); 1449 default: 1450 return -EOPNOTSUPP; 1451 } 1452 } 1453 1454 static inline void clean_psfp_sfi_bitmap(void) 1455 { 1456 bitmap_free(epsfp.psfp_sfi_bitmap); 1457 epsfp.psfp_sfi_bitmap = NULL; 1458 } 1459 1460 static void clean_stream_list(void) 1461 { 1462 struct enetc_stream_filter *s; 1463 struct hlist_node *tmp; 1464 1465 hlist_for_each_entry_safe(s, tmp, &epsfp.stream_list, node) { 1466 hlist_del(&s->node); 1467 kfree(s); 1468 } 1469 } 1470 1471 static void clean_sfi_list(void) 1472 { 1473 struct enetc_psfp_filter *sfi; 1474 struct hlist_node *tmp; 1475 1476 hlist_for_each_entry_safe(sfi, tmp, &epsfp.psfp_filter_list, node) { 1477 hlist_del(&sfi->node); 1478 kfree(sfi); 1479 } 1480 } 1481 1482 static void clean_sgi_list(void) 1483 { 1484 struct enetc_psfp_gate *sgi; 1485 struct hlist_node *tmp; 1486 1487 hlist_for_each_entry_safe(sgi, tmp, &epsfp.psfp_gate_list, node) { 1488 hlist_del(&sgi->node); 1489 kfree(sgi); 1490 } 1491 } 1492 1493 static void clean_psfp_all(void) 1494 { 1495 /* Disable all list nodes and free all memory */ 1496 clean_sfi_list(); 1497 clean_sgi_list(); 1498 clean_stream_list(); 1499 epsfp.dev_bitmap = 0; 1500 clean_psfp_sfi_bitmap(); 1501 } 1502 1503 int enetc_setup_tc_block_cb(enum tc_setup_type type, void *type_data, 1504 void *cb_priv) 1505 { 1506 struct net_device *ndev = cb_priv; 1507 1508 if (!tc_can_offload(ndev)) 1509 return -EOPNOTSUPP; 1510 1511 switch (type) { 1512 case TC_SETUP_CLSFLOWER: 1513 return enetc_setup_tc_cls_flower(netdev_priv(ndev), type_data); 1514 default: 1515 return -EOPNOTSUPP; 1516 } 1517 } 1518 1519 int enetc_psfp_init(struct enetc_ndev_priv *priv) 1520 { 1521 if (epsfp.psfp_sfi_bitmap) 1522 return 0; 1523 1524 epsfp.psfp_sfi_bitmap = bitmap_zalloc(priv->psfp_cap.max_psfp_filter, 1525 GFP_KERNEL); 1526 if (!epsfp.psfp_sfi_bitmap) 1527 return -ENOMEM; 1528 1529 spin_lock_init(&epsfp.psfp_lock); 1530 1531 if (list_empty(&enetc_block_cb_list)) 1532 epsfp.dev_bitmap = 0; 1533 1534 return 0; 1535 } 1536 1537 int enetc_psfp_clean(struct enetc_ndev_priv *priv) 1538 { 1539 if (!list_empty(&enetc_block_cb_list)) 1540 return -EBUSY; 1541 1542 clean_psfp_all(); 1543 1544 return 0; 1545 } 1546 1547 int enetc_setup_tc_psfp(struct net_device *ndev, void *type_data) 1548 { 1549 struct enetc_ndev_priv *priv = netdev_priv(ndev); 1550 struct flow_block_offload *f = type_data; 1551 int err; 1552 1553 err = flow_block_cb_setup_simple(f, &enetc_block_cb_list, 1554 enetc_setup_tc_block_cb, 1555 ndev, ndev, true); 1556 if (err) 1557 return err; 1558 1559 switch (f->command) { 1560 case FLOW_BLOCK_BIND: 1561 set_bit(enetc_pf_to_port(priv->si->pdev), &epsfp.dev_bitmap); 1562 break; 1563 case FLOW_BLOCK_UNBIND: 1564 clear_bit(enetc_pf_to_port(priv->si->pdev), &epsfp.dev_bitmap); 1565 if (!epsfp.dev_bitmap) 1566 clean_psfp_all(); 1567 break; 1568 } 1569 1570 return 0; 1571 } 1572