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