1 // SPDX-License-Identifier: GPL-2.0+ 2 // Copyright (c) 2021-2021 Hisilicon Limited. 3 #include <linux/skbuff.h> 4 5 #include "hnae3.h" 6 #include "hclge_comm_cmd.h" 7 #include "hclge_comm_rss.h" 8 9 static const u8 hclge_comm_hash_key[] = { 10 0x6D, 0x5A, 0x56, 0xDA, 0x25, 0x5B, 0x0E, 0xC2, 11 0x41, 0x67, 0x25, 0x3D, 0x43, 0xA3, 0x8F, 0xB0, 12 0xD0, 0xCA, 0x2B, 0xCB, 0xAE, 0x7B, 0x30, 0xB4, 13 0x77, 0xCB, 0x2D, 0xA3, 0x80, 0x30, 0xF2, 0x0C, 14 0x6A, 0x42, 0xB7, 0x3B, 0xBE, 0xAC, 0x01, 0xFA 15 }; 16 17 static void 18 hclge_comm_init_rss_tuple(struct hnae3_ae_dev *ae_dev, 19 struct hclge_comm_rss_tuple_cfg *rss_tuple_cfg) 20 { 21 rss_tuple_cfg->ipv4_tcp_en = HCLGE_COMM_RSS_INPUT_TUPLE_OTHER; 22 rss_tuple_cfg->ipv4_udp_en = HCLGE_COMM_RSS_INPUT_TUPLE_OTHER; 23 rss_tuple_cfg->ipv4_sctp_en = HCLGE_COMM_RSS_INPUT_TUPLE_SCTP; 24 rss_tuple_cfg->ipv4_fragment_en = HCLGE_COMM_RSS_INPUT_TUPLE_OTHER; 25 rss_tuple_cfg->ipv6_tcp_en = HCLGE_COMM_RSS_INPUT_TUPLE_OTHER; 26 rss_tuple_cfg->ipv6_udp_en = HCLGE_COMM_RSS_INPUT_TUPLE_OTHER; 27 rss_tuple_cfg->ipv6_sctp_en = 28 ae_dev->dev_version <= HNAE3_DEVICE_VERSION_V2 ? 29 HCLGE_COMM_RSS_INPUT_TUPLE_SCTP_NO_PORT : 30 HCLGE_COMM_RSS_INPUT_TUPLE_SCTP; 31 rss_tuple_cfg->ipv6_fragment_en = HCLGE_COMM_RSS_INPUT_TUPLE_OTHER; 32 } 33 34 int hclge_comm_rss_init_cfg(struct hnae3_handle *nic, 35 struct hnae3_ae_dev *ae_dev, 36 struct hclge_comm_rss_cfg *rss_cfg) 37 { 38 u16 rss_ind_tbl_size = ae_dev->dev_specs.rss_ind_tbl_size; 39 int rss_algo = HCLGE_COMM_RSS_HASH_ALGO_TOEPLITZ; 40 u16 *rss_ind_tbl; 41 42 if (nic->flags & HNAE3_SUPPORT_VF) 43 rss_cfg->rss_size = nic->kinfo.rss_size; 44 45 if (ae_dev->dev_version >= HNAE3_DEVICE_VERSION_V2) 46 rss_algo = HCLGE_COMM_RSS_HASH_ALGO_SIMPLE; 47 48 hclge_comm_init_rss_tuple(ae_dev, &rss_cfg->rss_tuple_sets); 49 50 rss_cfg->rss_algo = rss_algo; 51 52 rss_ind_tbl = devm_kcalloc(&ae_dev->pdev->dev, rss_ind_tbl_size, 53 sizeof(*rss_ind_tbl), GFP_KERNEL); 54 if (!rss_ind_tbl) 55 return -ENOMEM; 56 57 rss_cfg->rss_indirection_tbl = rss_ind_tbl; 58 memcpy(rss_cfg->rss_hash_key, hclge_comm_hash_key, 59 HCLGE_COMM_RSS_KEY_SIZE); 60 61 hclge_comm_rss_indir_init_cfg(ae_dev, rss_cfg); 62 63 return 0; 64 } 65 66 void hclge_comm_get_rss_tc_info(u16 rss_size, u8 hw_tc_map, u16 *tc_offset, 67 u16 *tc_valid, u16 *tc_size) 68 { 69 u16 roundup_size; 70 u32 i; 71 72 roundup_size = roundup_pow_of_two(rss_size); 73 roundup_size = ilog2(roundup_size); 74 75 for (i = 0; i < HCLGE_COMM_MAX_TC_NUM; i++) { 76 tc_valid[i] = 1; 77 tc_size[i] = roundup_size; 78 tc_offset[i] = (hw_tc_map & BIT(i)) ? rss_size * i : 0; 79 } 80 } 81 82 int hclge_comm_set_rss_tc_mode(struct hclge_comm_hw *hw, u16 *tc_offset, 83 u16 *tc_valid, u16 *tc_size) 84 { 85 struct hclge_comm_rss_tc_mode_cmd *req; 86 struct hclge_desc desc; 87 unsigned int i; 88 int ret; 89 90 req = (struct hclge_comm_rss_tc_mode_cmd *)desc.data; 91 92 hclge_comm_cmd_setup_basic_desc(&desc, HCLGE_OPC_RSS_TC_MODE, false); 93 for (i = 0; i < HCLGE_COMM_MAX_TC_NUM; i++) { 94 u16 mode = 0; 95 96 hnae3_set_bit(mode, HCLGE_COMM_RSS_TC_VALID_B, 97 (tc_valid[i] & 0x1)); 98 hnae3_set_field(mode, HCLGE_COMM_RSS_TC_SIZE_M, 99 HCLGE_COMM_RSS_TC_SIZE_S, tc_size[i]); 100 hnae3_set_bit(mode, HCLGE_COMM_RSS_TC_SIZE_MSB_B, 101 tc_size[i] >> HCLGE_COMM_RSS_TC_SIZE_MSB_OFFSET & 102 0x1); 103 hnae3_set_field(mode, HCLGE_COMM_RSS_TC_OFFSET_M, 104 HCLGE_COMM_RSS_TC_OFFSET_S, tc_offset[i]); 105 106 req->rss_tc_mode[i] = cpu_to_le16(mode); 107 } 108 109 ret = hclge_comm_cmd_send(hw, &desc, 1); 110 if (ret) 111 dev_err(&hw->cmq.csq.pdev->dev, 112 "failed to set rss tc mode, ret = %d.\n", ret); 113 114 return ret; 115 } 116 117 int hclge_comm_set_rss_hash_key(struct hclge_comm_rss_cfg *rss_cfg, 118 struct hclge_comm_hw *hw, const u8 *key, 119 const u8 hfunc) 120 { 121 u8 hash_algo; 122 int ret; 123 124 ret = hclge_comm_parse_rss_hfunc(rss_cfg, hfunc, &hash_algo); 125 if (ret) 126 return ret; 127 128 /* Set the RSS Hash Key if specififed by the user */ 129 if (key) { 130 ret = hclge_comm_set_rss_algo_key(hw, hash_algo, key); 131 if (ret) 132 return ret; 133 134 /* Update the shadow RSS key with user specified qids */ 135 memcpy(rss_cfg->rss_hash_key, key, HCLGE_COMM_RSS_KEY_SIZE); 136 } else { 137 ret = hclge_comm_set_rss_algo_key(hw, hash_algo, 138 rss_cfg->rss_hash_key); 139 if (ret) 140 return ret; 141 } 142 rss_cfg->rss_algo = hash_algo; 143 144 return 0; 145 } 146 147 int hclge_comm_set_rss_tuple(struct hnae3_ae_dev *ae_dev, 148 struct hclge_comm_hw *hw, 149 struct hclge_comm_rss_cfg *rss_cfg, 150 struct ethtool_rxnfc *nfc) 151 { 152 struct hclge_comm_rss_input_tuple_cmd *req; 153 struct hclge_desc desc; 154 int ret; 155 156 if (nfc->data & 157 ~(RXH_IP_SRC | RXH_IP_DST | RXH_L4_B_0_1 | RXH_L4_B_2_3)) 158 return -EINVAL; 159 160 req = (struct hclge_comm_rss_input_tuple_cmd *)desc.data; 161 hclge_comm_cmd_setup_basic_desc(&desc, HCLGE_OPC_RSS_INPUT_TUPLE, 162 false); 163 164 ret = hclge_comm_init_rss_tuple_cmd(rss_cfg, nfc, ae_dev, req); 165 if (ret) { 166 dev_err(&hw->cmq.csq.pdev->dev, 167 "failed to init rss tuple cmd, ret = %d.\n", ret); 168 return ret; 169 } 170 171 ret = hclge_comm_cmd_send(hw, &desc, 1); 172 if (ret) { 173 dev_err(&hw->cmq.csq.pdev->dev, 174 "failed to set rss tuple, ret = %d.\n", ret); 175 return ret; 176 } 177 178 rss_cfg->rss_tuple_sets.ipv4_tcp_en = req->ipv4_tcp_en; 179 rss_cfg->rss_tuple_sets.ipv4_udp_en = req->ipv4_udp_en; 180 rss_cfg->rss_tuple_sets.ipv4_sctp_en = req->ipv4_sctp_en; 181 rss_cfg->rss_tuple_sets.ipv4_fragment_en = req->ipv4_fragment_en; 182 rss_cfg->rss_tuple_sets.ipv6_tcp_en = req->ipv6_tcp_en; 183 rss_cfg->rss_tuple_sets.ipv6_udp_en = req->ipv6_udp_en; 184 rss_cfg->rss_tuple_sets.ipv6_sctp_en = req->ipv6_sctp_en; 185 rss_cfg->rss_tuple_sets.ipv6_fragment_en = req->ipv6_fragment_en; 186 return 0; 187 } 188 189 u32 hclge_comm_get_rss_key_size(struct hnae3_handle *handle) 190 { 191 return HCLGE_COMM_RSS_KEY_SIZE; 192 } 193 194 void hclge_comm_get_rss_type(struct hnae3_handle *nic, 195 struct hclge_comm_rss_tuple_cfg *rss_tuple_sets) 196 { 197 if (rss_tuple_sets->ipv4_tcp_en || 198 rss_tuple_sets->ipv4_udp_en || 199 rss_tuple_sets->ipv4_sctp_en || 200 rss_tuple_sets->ipv6_tcp_en || 201 rss_tuple_sets->ipv6_udp_en || 202 rss_tuple_sets->ipv6_sctp_en) 203 nic->kinfo.rss_type = PKT_HASH_TYPE_L4; 204 else if (rss_tuple_sets->ipv4_fragment_en || 205 rss_tuple_sets->ipv6_fragment_en) 206 nic->kinfo.rss_type = PKT_HASH_TYPE_L3; 207 else 208 nic->kinfo.rss_type = PKT_HASH_TYPE_NONE; 209 } 210 211 int hclge_comm_parse_rss_hfunc(struct hclge_comm_rss_cfg *rss_cfg, 212 const u8 hfunc, u8 *hash_algo) 213 { 214 switch (hfunc) { 215 case ETH_RSS_HASH_TOP: 216 *hash_algo = HCLGE_COMM_RSS_HASH_ALGO_TOEPLITZ; 217 return 0; 218 case ETH_RSS_HASH_XOR: 219 *hash_algo = HCLGE_COMM_RSS_HASH_ALGO_SIMPLE; 220 return 0; 221 case ETH_RSS_HASH_NO_CHANGE: 222 *hash_algo = rss_cfg->rss_algo; 223 return 0; 224 default: 225 return -EINVAL; 226 } 227 } 228 229 void hclge_comm_rss_indir_init_cfg(struct hnae3_ae_dev *ae_dev, 230 struct hclge_comm_rss_cfg *rss_cfg) 231 { 232 u16 i; 233 /* Initialize RSS indirect table */ 234 for (i = 0; i < ae_dev->dev_specs.rss_ind_tbl_size; i++) 235 rss_cfg->rss_indirection_tbl[i] = i % rss_cfg->rss_size; 236 } 237 238 int hclge_comm_get_rss_tuple(struct hclge_comm_rss_cfg *rss_cfg, int flow_type, 239 u8 *tuple_sets) 240 { 241 switch (flow_type) { 242 case TCP_V4_FLOW: 243 *tuple_sets = rss_cfg->rss_tuple_sets.ipv4_tcp_en; 244 break; 245 case UDP_V4_FLOW: 246 *tuple_sets = rss_cfg->rss_tuple_sets.ipv4_udp_en; 247 break; 248 case TCP_V6_FLOW: 249 *tuple_sets = rss_cfg->rss_tuple_sets.ipv6_tcp_en; 250 break; 251 case UDP_V6_FLOW: 252 *tuple_sets = rss_cfg->rss_tuple_sets.ipv6_udp_en; 253 break; 254 case SCTP_V4_FLOW: 255 *tuple_sets = rss_cfg->rss_tuple_sets.ipv4_sctp_en; 256 break; 257 case SCTP_V6_FLOW: 258 *tuple_sets = rss_cfg->rss_tuple_sets.ipv6_sctp_en; 259 break; 260 case IPV4_FLOW: 261 case IPV6_FLOW: 262 *tuple_sets = HCLGE_COMM_S_IP_BIT | HCLGE_COMM_D_IP_BIT; 263 break; 264 default: 265 return -EINVAL; 266 } 267 268 return 0; 269 } 270 271 static void 272 hclge_comm_append_rss_msb_info(struct hclge_comm_rss_ind_tbl_cmd *req, 273 u16 qid, u32 j) 274 { 275 u8 rss_msb_oft; 276 u8 rss_msb_val; 277 278 rss_msb_oft = 279 j * HCLGE_COMM_RSS_CFG_TBL_BW_H / BITS_PER_BYTE; 280 rss_msb_val = (qid >> HCLGE_COMM_RSS_CFG_TBL_BW_L & 0x1) << 281 (j * HCLGE_COMM_RSS_CFG_TBL_BW_H % BITS_PER_BYTE); 282 req->rss_qid_h[rss_msb_oft] |= rss_msb_val; 283 } 284 285 int hclge_comm_set_rss_indir_table(struct hnae3_ae_dev *ae_dev, 286 struct hclge_comm_hw *hw, const u16 *indir) 287 { 288 struct hclge_comm_rss_ind_tbl_cmd *req; 289 struct hclge_desc desc; 290 u16 rss_cfg_tbl_num; 291 int ret; 292 u16 qid; 293 u16 i; 294 u32 j; 295 296 req = (struct hclge_comm_rss_ind_tbl_cmd *)desc.data; 297 rss_cfg_tbl_num = ae_dev->dev_specs.rss_ind_tbl_size / 298 HCLGE_COMM_RSS_CFG_TBL_SIZE; 299 300 for (i = 0; i < rss_cfg_tbl_num; i++) { 301 hclge_comm_cmd_setup_basic_desc(&desc, 302 HCLGE_OPC_RSS_INDIR_TABLE, 303 false); 304 305 req->start_table_index = 306 cpu_to_le16(i * HCLGE_COMM_RSS_CFG_TBL_SIZE); 307 req->rss_set_bitmap = 308 cpu_to_le16(HCLGE_COMM_RSS_SET_BITMAP_MSK); 309 for (j = 0; j < HCLGE_COMM_RSS_CFG_TBL_SIZE; j++) { 310 qid = indir[i * HCLGE_COMM_RSS_CFG_TBL_SIZE + j]; 311 req->rss_qid_l[j] = qid & 0xff; 312 hclge_comm_append_rss_msb_info(req, qid, j); 313 } 314 ret = hclge_comm_cmd_send(hw, &desc, 1); 315 if (ret) { 316 dev_err(&hw->cmq.csq.pdev->dev, 317 "failed to configure rss table, ret = %d.\n", 318 ret); 319 return ret; 320 } 321 } 322 return 0; 323 } 324 325 int hclge_comm_set_rss_input_tuple(struct hnae3_handle *nic, 326 struct hclge_comm_hw *hw, bool is_pf, 327 struct hclge_comm_rss_cfg *rss_cfg) 328 { 329 struct hclge_comm_rss_input_tuple_cmd *req; 330 struct hclge_desc desc; 331 int ret; 332 333 hclge_comm_cmd_setup_basic_desc(&desc, HCLGE_OPC_RSS_INPUT_TUPLE, 334 false); 335 336 req = (struct hclge_comm_rss_input_tuple_cmd *)desc.data; 337 338 req->ipv4_tcp_en = rss_cfg->rss_tuple_sets.ipv4_tcp_en; 339 req->ipv4_udp_en = rss_cfg->rss_tuple_sets.ipv4_udp_en; 340 req->ipv4_sctp_en = rss_cfg->rss_tuple_sets.ipv4_sctp_en; 341 req->ipv4_fragment_en = rss_cfg->rss_tuple_sets.ipv4_fragment_en; 342 req->ipv6_tcp_en = rss_cfg->rss_tuple_sets.ipv6_tcp_en; 343 req->ipv6_udp_en = rss_cfg->rss_tuple_sets.ipv6_udp_en; 344 req->ipv6_sctp_en = rss_cfg->rss_tuple_sets.ipv6_sctp_en; 345 req->ipv6_fragment_en = rss_cfg->rss_tuple_sets.ipv6_fragment_en; 346 347 if (is_pf) 348 hclge_comm_get_rss_type(nic, &rss_cfg->rss_tuple_sets); 349 350 ret = hclge_comm_cmd_send(hw, &desc, 1); 351 if (ret) 352 dev_err(&hw->cmq.csq.pdev->dev, 353 "failed to configure rss input, ret = %d.\n", ret); 354 return ret; 355 } 356 357 void hclge_comm_get_rss_hash_info(struct hclge_comm_rss_cfg *rss_cfg, u8 *key, 358 u8 *hfunc) 359 { 360 /* Get hash algorithm */ 361 if (hfunc) { 362 switch (rss_cfg->rss_algo) { 363 case HCLGE_COMM_RSS_HASH_ALGO_TOEPLITZ: 364 *hfunc = ETH_RSS_HASH_TOP; 365 break; 366 case HCLGE_COMM_RSS_HASH_ALGO_SIMPLE: 367 *hfunc = ETH_RSS_HASH_XOR; 368 break; 369 default: 370 *hfunc = ETH_RSS_HASH_UNKNOWN; 371 break; 372 } 373 } 374 375 /* Get the RSS Key required by the user */ 376 if (key) 377 memcpy(key, rss_cfg->rss_hash_key, HCLGE_COMM_RSS_KEY_SIZE); 378 } 379 380 void hclge_comm_get_rss_indir_tbl(struct hclge_comm_rss_cfg *rss_cfg, 381 u32 *indir, u16 rss_ind_tbl_size) 382 { 383 u16 i; 384 385 if (!indir) 386 return; 387 388 for (i = 0; i < rss_ind_tbl_size; i++) 389 indir[i] = rss_cfg->rss_indirection_tbl[i]; 390 } 391 392 int hclge_comm_set_rss_algo_key(struct hclge_comm_hw *hw, const u8 hfunc, 393 const u8 *key) 394 { 395 struct hclge_comm_rss_config_cmd *req; 396 unsigned int key_offset = 0; 397 struct hclge_desc desc; 398 int key_counts; 399 int key_size; 400 int ret; 401 402 key_counts = HCLGE_COMM_RSS_KEY_SIZE; 403 req = (struct hclge_comm_rss_config_cmd *)desc.data; 404 405 while (key_counts) { 406 hclge_comm_cmd_setup_basic_desc(&desc, 407 HCLGE_OPC_RSS_GENERIC_CONFIG, 408 false); 409 410 req->hash_config |= (hfunc & HCLGE_COMM_RSS_HASH_ALGO_MASK); 411 req->hash_config |= 412 (key_offset << HCLGE_COMM_RSS_HASH_KEY_OFFSET_B); 413 414 key_size = min(HCLGE_COMM_RSS_HASH_KEY_NUM, key_counts); 415 memcpy(req->hash_key, 416 key + key_offset * HCLGE_COMM_RSS_HASH_KEY_NUM, 417 key_size); 418 419 key_counts -= key_size; 420 key_offset++; 421 ret = hclge_comm_cmd_send(hw, &desc, 1); 422 if (ret) { 423 dev_err(&hw->cmq.csq.pdev->dev, 424 "failed to configure RSS key, ret = %d.\n", 425 ret); 426 return ret; 427 } 428 } 429 430 return 0; 431 } 432 433 static u8 hclge_comm_get_rss_hash_bits(struct ethtool_rxnfc *nfc) 434 { 435 u8 hash_sets = nfc->data & RXH_L4_B_0_1 ? HCLGE_COMM_S_PORT_BIT : 0; 436 437 if (nfc->data & RXH_L4_B_2_3) 438 hash_sets |= HCLGE_COMM_D_PORT_BIT; 439 else 440 hash_sets &= ~HCLGE_COMM_D_PORT_BIT; 441 442 if (nfc->data & RXH_IP_SRC) 443 hash_sets |= HCLGE_COMM_S_IP_BIT; 444 else 445 hash_sets &= ~HCLGE_COMM_S_IP_BIT; 446 447 if (nfc->data & RXH_IP_DST) 448 hash_sets |= HCLGE_COMM_D_IP_BIT; 449 else 450 hash_sets &= ~HCLGE_COMM_D_IP_BIT; 451 452 if (nfc->flow_type == SCTP_V4_FLOW || nfc->flow_type == SCTP_V6_FLOW) 453 hash_sets |= HCLGE_COMM_V_TAG_BIT; 454 455 return hash_sets; 456 } 457 458 int hclge_comm_init_rss_tuple_cmd(struct hclge_comm_rss_cfg *rss_cfg, 459 struct ethtool_rxnfc *nfc, 460 struct hnae3_ae_dev *ae_dev, 461 struct hclge_comm_rss_input_tuple_cmd *req) 462 { 463 u8 tuple_sets; 464 465 req->ipv4_tcp_en = rss_cfg->rss_tuple_sets.ipv4_tcp_en; 466 req->ipv4_udp_en = rss_cfg->rss_tuple_sets.ipv4_udp_en; 467 req->ipv4_sctp_en = rss_cfg->rss_tuple_sets.ipv4_sctp_en; 468 req->ipv4_fragment_en = rss_cfg->rss_tuple_sets.ipv4_fragment_en; 469 req->ipv6_tcp_en = rss_cfg->rss_tuple_sets.ipv6_tcp_en; 470 req->ipv6_udp_en = rss_cfg->rss_tuple_sets.ipv6_udp_en; 471 req->ipv6_sctp_en = rss_cfg->rss_tuple_sets.ipv6_sctp_en; 472 req->ipv6_fragment_en = rss_cfg->rss_tuple_sets.ipv6_fragment_en; 473 474 tuple_sets = hclge_comm_get_rss_hash_bits(nfc); 475 switch (nfc->flow_type) { 476 case TCP_V4_FLOW: 477 req->ipv4_tcp_en = tuple_sets; 478 break; 479 case TCP_V6_FLOW: 480 req->ipv6_tcp_en = tuple_sets; 481 break; 482 case UDP_V4_FLOW: 483 req->ipv4_udp_en = tuple_sets; 484 break; 485 case UDP_V6_FLOW: 486 req->ipv6_udp_en = tuple_sets; 487 break; 488 case SCTP_V4_FLOW: 489 req->ipv4_sctp_en = tuple_sets; 490 break; 491 case SCTP_V6_FLOW: 492 if (ae_dev->dev_version <= HNAE3_DEVICE_VERSION_V2 && 493 (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3))) 494 return -EINVAL; 495 496 req->ipv6_sctp_en = tuple_sets; 497 break; 498 case IPV4_FLOW: 499 req->ipv4_fragment_en = HCLGE_COMM_RSS_INPUT_TUPLE_OTHER; 500 break; 501 case IPV6_FLOW: 502 req->ipv6_fragment_en = HCLGE_COMM_RSS_INPUT_TUPLE_OTHER; 503 break; 504 default: 505 return -EINVAL; 506 } 507 508 return 0; 509 } 510 511 u64 hclge_comm_convert_rss_tuple(u8 tuple_sets) 512 { 513 u64 tuple_data = 0; 514 515 if (tuple_sets & HCLGE_COMM_D_PORT_BIT) 516 tuple_data |= RXH_L4_B_2_3; 517 if (tuple_sets & HCLGE_COMM_S_PORT_BIT) 518 tuple_data |= RXH_L4_B_0_1; 519 if (tuple_sets & HCLGE_COMM_D_IP_BIT) 520 tuple_data |= RXH_IP_DST; 521 if (tuple_sets & HCLGE_COMM_S_IP_BIT) 522 tuple_data |= RXH_IP_SRC; 523 524 return tuple_data; 525 } 526