1 /* 2 * Copyright (c) 2015-2016, Mellanox Technologies. All rights reserved. 3 * 4 * This software is available to you under a choice of one of two 5 * licenses. You may choose to be licensed under the terms of the GNU 6 * General Public License (GPL) Version 2, available from the file 7 * COPYING in the main directory of this source tree, or the 8 * OpenIB.org BSD license below: 9 * 10 * Redistribution and use in source and binary forms, with or 11 * without modification, are permitted provided that the following 12 * conditions are met: 13 * 14 * - Redistributions of source code must retain the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer. 17 * 18 * - Redistributions in binary form must reproduce the above 19 * copyright notice, this list of conditions and the following 20 * disclaimer in the documentation and/or other materials 21 * provided with the distribution. 22 * 23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 30 * SOFTWARE. 31 */ 32 33 #include <net/tc_act/tc_gact.h> 34 #include <linux/mlx5/fs.h> 35 #include <net/vxlan.h> 36 #include <net/geneve.h> 37 #include <linux/bpf.h> 38 #include <linux/debugfs.h> 39 #include <linux/if_bridge.h> 40 #include <linux/filter.h> 41 #include <net/page_pool/types.h> 42 #include <net/pkt_sched.h> 43 #include <net/xdp_sock_drv.h> 44 #include "eswitch.h" 45 #include "en.h" 46 #include "en/txrx.h" 47 #include "en_tc.h" 48 #include "en_rep.h" 49 #include "en_accel/ipsec.h" 50 #include "en_accel/macsec.h" 51 #include "en_accel/en_accel.h" 52 #include "en_accel/ktls.h" 53 #include "lib/vxlan.h" 54 #include "lib/clock.h" 55 #include "en/port.h" 56 #include "en/xdp.h" 57 #include "lib/eq.h" 58 #include "en/monitor_stats.h" 59 #include "en/health.h" 60 #include "en/params.h" 61 #include "en/xsk/pool.h" 62 #include "en/xsk/setup.h" 63 #include "en/xsk/rx.h" 64 #include "en/xsk/tx.h" 65 #include "en/hv_vhca_stats.h" 66 #include "en/devlink.h" 67 #include "lib/mlx5.h" 68 #include "en/ptp.h" 69 #include "en/htb.h" 70 #include "qos.h" 71 #include "en/trap.h" 72 73 bool mlx5e_check_fragmented_striding_rq_cap(struct mlx5_core_dev *mdev, u8 page_shift, 74 enum mlx5e_mpwrq_umr_mode umr_mode) 75 { 76 u16 umr_wqebbs, max_wqebbs; 77 bool striding_rq_umr; 78 79 striding_rq_umr = MLX5_CAP_GEN(mdev, striding_rq) && MLX5_CAP_GEN(mdev, umr_ptr_rlky) && 80 MLX5_CAP_ETH(mdev, reg_umr_sq); 81 if (!striding_rq_umr) 82 return false; 83 84 umr_wqebbs = mlx5e_mpwrq_umr_wqebbs(mdev, page_shift, umr_mode); 85 max_wqebbs = mlx5e_get_max_sq_aligned_wqebbs(mdev); 86 /* Sanity check; should never happen, because mlx5e_mpwrq_umr_wqebbs is 87 * calculated from mlx5e_get_max_sq_aligned_wqebbs. 88 */ 89 if (WARN_ON(umr_wqebbs > max_wqebbs)) 90 return false; 91 92 return true; 93 } 94 95 void mlx5e_update_carrier(struct mlx5e_priv *priv) 96 { 97 struct mlx5_core_dev *mdev = priv->mdev; 98 u8 port_state; 99 bool up; 100 101 port_state = mlx5_query_vport_state(mdev, 102 MLX5_VPORT_STATE_OP_MOD_VNIC_VPORT, 103 0); 104 105 up = port_state == VPORT_STATE_UP; 106 if (up == netif_carrier_ok(priv->netdev)) 107 netif_carrier_event(priv->netdev); 108 if (up) { 109 netdev_info(priv->netdev, "Link up\n"); 110 netif_carrier_on(priv->netdev); 111 } else { 112 netdev_info(priv->netdev, "Link down\n"); 113 netif_carrier_off(priv->netdev); 114 } 115 } 116 117 static void mlx5e_update_carrier_work(struct work_struct *work) 118 { 119 struct mlx5e_priv *priv = container_of(work, struct mlx5e_priv, 120 update_carrier_work); 121 122 mutex_lock(&priv->state_lock); 123 if (test_bit(MLX5E_STATE_OPENED, &priv->state)) 124 if (priv->profile->update_carrier) 125 priv->profile->update_carrier(priv); 126 mutex_unlock(&priv->state_lock); 127 } 128 129 static void mlx5e_update_stats_work(struct work_struct *work) 130 { 131 struct mlx5e_priv *priv = container_of(work, struct mlx5e_priv, 132 update_stats_work); 133 134 mutex_lock(&priv->state_lock); 135 priv->profile->update_stats(priv); 136 mutex_unlock(&priv->state_lock); 137 } 138 139 void mlx5e_queue_update_stats(struct mlx5e_priv *priv) 140 { 141 if (!priv->profile->update_stats) 142 return; 143 144 if (unlikely(test_bit(MLX5E_STATE_DESTROYING, &priv->state))) 145 return; 146 147 queue_work(priv->wq, &priv->update_stats_work); 148 } 149 150 static int async_event(struct notifier_block *nb, unsigned long event, void *data) 151 { 152 struct mlx5e_priv *priv = container_of(nb, struct mlx5e_priv, events_nb); 153 struct mlx5_eqe *eqe = data; 154 155 if (event != MLX5_EVENT_TYPE_PORT_CHANGE) 156 return NOTIFY_DONE; 157 158 switch (eqe->sub_type) { 159 case MLX5_PORT_CHANGE_SUBTYPE_DOWN: 160 case MLX5_PORT_CHANGE_SUBTYPE_ACTIVE: 161 queue_work(priv->wq, &priv->update_carrier_work); 162 break; 163 default: 164 return NOTIFY_DONE; 165 } 166 167 return NOTIFY_OK; 168 } 169 170 static void mlx5e_enable_async_events(struct mlx5e_priv *priv) 171 { 172 priv->events_nb.notifier_call = async_event; 173 mlx5_notifier_register(priv->mdev, &priv->events_nb); 174 } 175 176 static void mlx5e_disable_async_events(struct mlx5e_priv *priv) 177 { 178 mlx5_notifier_unregister(priv->mdev, &priv->events_nb); 179 } 180 181 static int blocking_event(struct notifier_block *nb, unsigned long event, void *data) 182 { 183 struct mlx5e_priv *priv = container_of(nb, struct mlx5e_priv, blocking_events_nb); 184 struct mlx5_devlink_trap_event_ctx *trap_event_ctx = data; 185 int err; 186 187 switch (event) { 188 case MLX5_DRIVER_EVENT_TYPE_TRAP: 189 err = mlx5e_handle_trap_event(priv, trap_event_ctx->trap); 190 if (err) { 191 trap_event_ctx->err = err; 192 return NOTIFY_BAD; 193 } 194 break; 195 default: 196 return NOTIFY_DONE; 197 } 198 return NOTIFY_OK; 199 } 200 201 static void mlx5e_enable_blocking_events(struct mlx5e_priv *priv) 202 { 203 priv->blocking_events_nb.notifier_call = blocking_event; 204 mlx5_blocking_notifier_register(priv->mdev, &priv->blocking_events_nb); 205 } 206 207 static void mlx5e_disable_blocking_events(struct mlx5e_priv *priv) 208 { 209 mlx5_blocking_notifier_unregister(priv->mdev, &priv->blocking_events_nb); 210 } 211 212 static u16 mlx5e_mpwrq_umr_octowords(u32 entries, enum mlx5e_mpwrq_umr_mode umr_mode) 213 { 214 u8 umr_entry_size = mlx5e_mpwrq_umr_entry_size(umr_mode); 215 u32 sz; 216 217 sz = ALIGN(entries * umr_entry_size, MLX5_UMR_FLEX_ALIGNMENT); 218 219 return sz / MLX5_OCTWORD; 220 } 221 222 static inline void mlx5e_build_umr_wqe(struct mlx5e_rq *rq, 223 struct mlx5e_icosq *sq, 224 struct mlx5e_umr_wqe *wqe) 225 { 226 struct mlx5_wqe_ctrl_seg *cseg = &wqe->ctrl; 227 struct mlx5_wqe_umr_ctrl_seg *ucseg = &wqe->uctrl; 228 u16 octowords; 229 u8 ds_cnt; 230 231 ds_cnt = DIV_ROUND_UP(mlx5e_mpwrq_umr_wqe_sz(rq->mdev, rq->mpwqe.page_shift, 232 rq->mpwqe.umr_mode), 233 MLX5_SEND_WQE_DS); 234 235 cseg->qpn_ds = cpu_to_be32((sq->sqn << MLX5_WQE_CTRL_QPN_SHIFT) | 236 ds_cnt); 237 cseg->umr_mkey = rq->mpwqe.umr_mkey_be; 238 239 ucseg->flags = MLX5_UMR_TRANSLATION_OFFSET_EN | MLX5_UMR_INLINE; 240 octowords = mlx5e_mpwrq_umr_octowords(rq->mpwqe.pages_per_wqe, rq->mpwqe.umr_mode); 241 ucseg->xlt_octowords = cpu_to_be16(octowords); 242 ucseg->mkey_mask = cpu_to_be64(MLX5_MKEY_MASK_FREE); 243 } 244 245 static int mlx5e_rq_shampo_hd_alloc(struct mlx5e_rq *rq, int node) 246 { 247 rq->mpwqe.shampo = kvzalloc_node(sizeof(*rq->mpwqe.shampo), 248 GFP_KERNEL, node); 249 if (!rq->mpwqe.shampo) 250 return -ENOMEM; 251 return 0; 252 } 253 254 static void mlx5e_rq_shampo_hd_free(struct mlx5e_rq *rq) 255 { 256 kvfree(rq->mpwqe.shampo); 257 } 258 259 static int mlx5e_rq_shampo_hd_info_alloc(struct mlx5e_rq *rq, int node) 260 { 261 struct mlx5e_shampo_hd *shampo = rq->mpwqe.shampo; 262 263 shampo->bitmap = bitmap_zalloc_node(shampo->hd_per_wq, GFP_KERNEL, 264 node); 265 shampo->info = kvzalloc_node(array_size(shampo->hd_per_wq, 266 sizeof(*shampo->info)), 267 GFP_KERNEL, node); 268 shampo->pages = kvzalloc_node(array_size(shampo->hd_per_wq, 269 sizeof(*shampo->pages)), 270 GFP_KERNEL, node); 271 if (!shampo->bitmap || !shampo->info || !shampo->pages) 272 goto err_nomem; 273 274 return 0; 275 276 err_nomem: 277 kvfree(shampo->info); 278 kvfree(shampo->bitmap); 279 kvfree(shampo->pages); 280 281 return -ENOMEM; 282 } 283 284 static void mlx5e_rq_shampo_hd_info_free(struct mlx5e_rq *rq) 285 { 286 kvfree(rq->mpwqe.shampo->bitmap); 287 kvfree(rq->mpwqe.shampo->info); 288 kvfree(rq->mpwqe.shampo->pages); 289 } 290 291 static int mlx5e_rq_alloc_mpwqe_info(struct mlx5e_rq *rq, int node) 292 { 293 int wq_sz = mlx5_wq_ll_get_size(&rq->mpwqe.wq); 294 size_t alloc_size; 295 296 alloc_size = array_size(wq_sz, struct_size(rq->mpwqe.info, 297 alloc_units.frag_pages, 298 rq->mpwqe.pages_per_wqe)); 299 300 rq->mpwqe.info = kvzalloc_node(alloc_size, GFP_KERNEL, node); 301 if (!rq->mpwqe.info) 302 return -ENOMEM; 303 304 /* For deferred page release (release right before alloc), make sure 305 * that on first round release is not called. 306 */ 307 for (int i = 0; i < wq_sz; i++) { 308 struct mlx5e_mpw_info *wi = mlx5e_get_mpw_info(rq, i); 309 310 bitmap_fill(wi->skip_release_bitmap, rq->mpwqe.pages_per_wqe); 311 } 312 313 mlx5e_build_umr_wqe(rq, rq->icosq, &rq->mpwqe.umr_wqe); 314 315 return 0; 316 } 317 318 319 static u8 mlx5e_mpwrq_access_mode(enum mlx5e_mpwrq_umr_mode umr_mode) 320 { 321 switch (umr_mode) { 322 case MLX5E_MPWRQ_UMR_MODE_ALIGNED: 323 return MLX5_MKC_ACCESS_MODE_MTT; 324 case MLX5E_MPWRQ_UMR_MODE_UNALIGNED: 325 return MLX5_MKC_ACCESS_MODE_KSM; 326 case MLX5E_MPWRQ_UMR_MODE_OVERSIZED: 327 return MLX5_MKC_ACCESS_MODE_KLMS; 328 case MLX5E_MPWRQ_UMR_MODE_TRIPLE: 329 return MLX5_MKC_ACCESS_MODE_KSM; 330 } 331 WARN_ONCE(1, "MPWRQ UMR mode %d is not known\n", umr_mode); 332 return 0; 333 } 334 335 static int mlx5e_create_umr_mkey(struct mlx5_core_dev *mdev, 336 u32 npages, u8 page_shift, u32 *umr_mkey, 337 dma_addr_t filler_addr, 338 enum mlx5e_mpwrq_umr_mode umr_mode, 339 u32 xsk_chunk_size) 340 { 341 struct mlx5_mtt *mtt; 342 struct mlx5_ksm *ksm; 343 struct mlx5_klm *klm; 344 u32 octwords; 345 int inlen; 346 void *mkc; 347 u32 *in; 348 int err; 349 int i; 350 351 if ((umr_mode == MLX5E_MPWRQ_UMR_MODE_UNALIGNED || 352 umr_mode == MLX5E_MPWRQ_UMR_MODE_TRIPLE) && 353 !MLX5_CAP_GEN(mdev, fixed_buffer_size)) { 354 mlx5_core_warn(mdev, "Unaligned AF_XDP requires fixed_buffer_size capability\n"); 355 return -EINVAL; 356 } 357 358 octwords = mlx5e_mpwrq_umr_octowords(npages, umr_mode); 359 360 inlen = MLX5_FLEXIBLE_INLEN(mdev, MLX5_ST_SZ_BYTES(create_mkey_in), 361 MLX5_OCTWORD, octwords); 362 if (inlen < 0) 363 return inlen; 364 365 in = kvzalloc(inlen, GFP_KERNEL); 366 if (!in) 367 return -ENOMEM; 368 369 mkc = MLX5_ADDR_OF(create_mkey_in, in, memory_key_mkey_entry); 370 371 MLX5_SET(mkc, mkc, free, 1); 372 MLX5_SET(mkc, mkc, umr_en, 1); 373 MLX5_SET(mkc, mkc, lw, 1); 374 MLX5_SET(mkc, mkc, lr, 1); 375 MLX5_SET(mkc, mkc, access_mode_1_0, mlx5e_mpwrq_access_mode(umr_mode)); 376 mlx5e_mkey_set_relaxed_ordering(mdev, mkc); 377 MLX5_SET(mkc, mkc, qpn, 0xffffff); 378 MLX5_SET(mkc, mkc, pd, mdev->mlx5e_res.hw_objs.pdn); 379 MLX5_SET64(mkc, mkc, len, npages << page_shift); 380 MLX5_SET(mkc, mkc, translations_octword_size, octwords); 381 if (umr_mode == MLX5E_MPWRQ_UMR_MODE_TRIPLE) 382 MLX5_SET(mkc, mkc, log_page_size, page_shift - 2); 383 else if (umr_mode != MLX5E_MPWRQ_UMR_MODE_OVERSIZED) 384 MLX5_SET(mkc, mkc, log_page_size, page_shift); 385 MLX5_SET(create_mkey_in, in, translations_octword_actual_size, octwords); 386 387 /* Initialize the mkey with all MTTs pointing to a default 388 * page (filler_addr). When the channels are activated, UMR 389 * WQEs will redirect the RX WQEs to the actual memory from 390 * the RQ's pool, while the gaps (wqe_overflow) remain mapped 391 * to the default page. 392 */ 393 switch (umr_mode) { 394 case MLX5E_MPWRQ_UMR_MODE_OVERSIZED: 395 klm = MLX5_ADDR_OF(create_mkey_in, in, klm_pas_mtt); 396 for (i = 0; i < npages; i++) { 397 klm[i << 1] = (struct mlx5_klm) { 398 .va = cpu_to_be64(filler_addr), 399 .bcount = cpu_to_be32(xsk_chunk_size), 400 .key = cpu_to_be32(mdev->mlx5e_res.hw_objs.mkey), 401 }; 402 klm[(i << 1) + 1] = (struct mlx5_klm) { 403 .va = cpu_to_be64(filler_addr), 404 .bcount = cpu_to_be32((1 << page_shift) - xsk_chunk_size), 405 .key = cpu_to_be32(mdev->mlx5e_res.hw_objs.mkey), 406 }; 407 } 408 break; 409 case MLX5E_MPWRQ_UMR_MODE_UNALIGNED: 410 ksm = MLX5_ADDR_OF(create_mkey_in, in, klm_pas_mtt); 411 for (i = 0; i < npages; i++) 412 ksm[i] = (struct mlx5_ksm) { 413 .key = cpu_to_be32(mdev->mlx5e_res.hw_objs.mkey), 414 .va = cpu_to_be64(filler_addr), 415 }; 416 break; 417 case MLX5E_MPWRQ_UMR_MODE_ALIGNED: 418 mtt = MLX5_ADDR_OF(create_mkey_in, in, klm_pas_mtt); 419 for (i = 0; i < npages; i++) 420 mtt[i] = (struct mlx5_mtt) { 421 .ptag = cpu_to_be64(filler_addr), 422 }; 423 break; 424 case MLX5E_MPWRQ_UMR_MODE_TRIPLE: 425 ksm = MLX5_ADDR_OF(create_mkey_in, in, klm_pas_mtt); 426 for (i = 0; i < npages * 4; i++) { 427 ksm[i] = (struct mlx5_ksm) { 428 .key = cpu_to_be32(mdev->mlx5e_res.hw_objs.mkey), 429 .va = cpu_to_be64(filler_addr), 430 }; 431 } 432 break; 433 } 434 435 err = mlx5_core_create_mkey(mdev, umr_mkey, in, inlen); 436 437 kvfree(in); 438 return err; 439 } 440 441 static int mlx5e_create_umr_klm_mkey(struct mlx5_core_dev *mdev, 442 u64 nentries, 443 u32 *umr_mkey) 444 { 445 int inlen; 446 void *mkc; 447 u32 *in; 448 int err; 449 450 inlen = MLX5_ST_SZ_BYTES(create_mkey_in); 451 452 in = kvzalloc(inlen, GFP_KERNEL); 453 if (!in) 454 return -ENOMEM; 455 456 mkc = MLX5_ADDR_OF(create_mkey_in, in, memory_key_mkey_entry); 457 458 MLX5_SET(mkc, mkc, free, 1); 459 MLX5_SET(mkc, mkc, umr_en, 1); 460 MLX5_SET(mkc, mkc, lw, 1); 461 MLX5_SET(mkc, mkc, lr, 1); 462 MLX5_SET(mkc, mkc, access_mode_1_0, MLX5_MKC_ACCESS_MODE_KLMS); 463 mlx5e_mkey_set_relaxed_ordering(mdev, mkc); 464 MLX5_SET(mkc, mkc, qpn, 0xffffff); 465 MLX5_SET(mkc, mkc, pd, mdev->mlx5e_res.hw_objs.pdn); 466 MLX5_SET(mkc, mkc, translations_octword_size, nentries); 467 MLX5_SET(mkc, mkc, length64, 1); 468 err = mlx5_core_create_mkey(mdev, umr_mkey, in, inlen); 469 470 kvfree(in); 471 return err; 472 } 473 474 static int mlx5e_create_rq_umr_mkey(struct mlx5_core_dev *mdev, struct mlx5e_rq *rq) 475 { 476 u32 xsk_chunk_size = rq->xsk_pool ? rq->xsk_pool->chunk_size : 0; 477 u32 wq_size = mlx5_wq_ll_get_size(&rq->mpwqe.wq); 478 u32 num_entries, max_num_entries; 479 u32 umr_mkey; 480 int err; 481 482 max_num_entries = mlx5e_mpwrq_max_num_entries(mdev, rq->mpwqe.umr_mode); 483 484 /* Shouldn't overflow, the result is at most MLX5E_MAX_RQ_NUM_MTTS. */ 485 if (WARN_ON_ONCE(check_mul_overflow(wq_size, (u32)rq->mpwqe.mtts_per_wqe, 486 &num_entries) || 487 num_entries > max_num_entries)) 488 mlx5_core_err(mdev, "%s: multiplication overflow: %u * %u > %u\n", 489 __func__, wq_size, rq->mpwqe.mtts_per_wqe, 490 max_num_entries); 491 492 err = mlx5e_create_umr_mkey(mdev, num_entries, rq->mpwqe.page_shift, 493 &umr_mkey, rq->wqe_overflow.addr, 494 rq->mpwqe.umr_mode, xsk_chunk_size); 495 rq->mpwqe.umr_mkey_be = cpu_to_be32(umr_mkey); 496 return err; 497 } 498 499 static int mlx5e_create_rq_hd_umr_mkey(struct mlx5_core_dev *mdev, 500 struct mlx5e_rq *rq) 501 { 502 u32 max_klm_size = BIT(MLX5_CAP_GEN(mdev, log_max_klm_list_size)); 503 504 if (max_klm_size < rq->mpwqe.shampo->hd_per_wq) { 505 mlx5_core_err(mdev, "max klm list size 0x%x is smaller than shampo header buffer list size 0x%x\n", 506 max_klm_size, rq->mpwqe.shampo->hd_per_wq); 507 return -EINVAL; 508 } 509 return mlx5e_create_umr_klm_mkey(mdev, rq->mpwqe.shampo->hd_per_wq, 510 &rq->mpwqe.shampo->mkey); 511 } 512 513 static void mlx5e_init_frags_partition(struct mlx5e_rq *rq) 514 { 515 struct mlx5e_wqe_frag_info next_frag = {}; 516 struct mlx5e_wqe_frag_info *prev = NULL; 517 int i; 518 519 WARN_ON(rq->xsk_pool); 520 521 next_frag.frag_page = &rq->wqe.alloc_units->frag_pages[0]; 522 523 /* Skip first release due to deferred release. */ 524 next_frag.flags = BIT(MLX5E_WQE_FRAG_SKIP_RELEASE); 525 526 for (i = 0; i < mlx5_wq_cyc_get_size(&rq->wqe.wq); i++) { 527 struct mlx5e_rq_frag_info *frag_info = &rq->wqe.info.arr[0]; 528 struct mlx5e_wqe_frag_info *frag = 529 &rq->wqe.frags[i << rq->wqe.info.log_num_frags]; 530 int f; 531 532 for (f = 0; f < rq->wqe.info.num_frags; f++, frag++) { 533 if (next_frag.offset + frag_info[f].frag_stride > PAGE_SIZE) { 534 /* Pages are assigned at runtime. */ 535 next_frag.frag_page++; 536 next_frag.offset = 0; 537 if (prev) 538 prev->flags |= BIT(MLX5E_WQE_FRAG_LAST_IN_PAGE); 539 } 540 *frag = next_frag; 541 542 /* prepare next */ 543 next_frag.offset += frag_info[f].frag_stride; 544 prev = frag; 545 } 546 } 547 548 if (prev) 549 prev->flags |= BIT(MLX5E_WQE_FRAG_LAST_IN_PAGE); 550 } 551 552 static void mlx5e_init_xsk_buffs(struct mlx5e_rq *rq) 553 { 554 int i; 555 556 /* Assumptions used by XSK batched allocator. */ 557 WARN_ON(rq->wqe.info.num_frags != 1); 558 WARN_ON(rq->wqe.info.log_num_frags != 0); 559 WARN_ON(rq->wqe.info.arr[0].frag_stride != PAGE_SIZE); 560 561 /* Considering the above assumptions a fragment maps to a single 562 * xsk_buff. 563 */ 564 for (i = 0; i < mlx5_wq_cyc_get_size(&rq->wqe.wq); i++) { 565 rq->wqe.frags[i].xskp = &rq->wqe.alloc_units->xsk_buffs[i]; 566 567 /* Skip first release due to deferred release as WQES are 568 * not allocated yet. 569 */ 570 rq->wqe.frags[i].flags |= BIT(MLX5E_WQE_FRAG_SKIP_RELEASE); 571 } 572 } 573 574 static int mlx5e_init_wqe_alloc_info(struct mlx5e_rq *rq, int node) 575 { 576 int wq_sz = mlx5_wq_cyc_get_size(&rq->wqe.wq); 577 int len = wq_sz << rq->wqe.info.log_num_frags; 578 struct mlx5e_wqe_frag_info *frags; 579 union mlx5e_alloc_units *aus; 580 int aus_sz; 581 582 if (rq->xsk_pool) 583 aus_sz = sizeof(*aus->xsk_buffs); 584 else 585 aus_sz = sizeof(*aus->frag_pages); 586 587 aus = kvzalloc_node(array_size(len, aus_sz), GFP_KERNEL, node); 588 if (!aus) 589 return -ENOMEM; 590 591 frags = kvzalloc_node(array_size(len, sizeof(*frags)), GFP_KERNEL, node); 592 if (!frags) { 593 kvfree(aus); 594 return -ENOMEM; 595 } 596 597 rq->wqe.alloc_units = aus; 598 rq->wqe.frags = frags; 599 600 if (rq->xsk_pool) 601 mlx5e_init_xsk_buffs(rq); 602 else 603 mlx5e_init_frags_partition(rq); 604 605 return 0; 606 } 607 608 static void mlx5e_free_wqe_alloc_info(struct mlx5e_rq *rq) 609 { 610 kvfree(rq->wqe.frags); 611 kvfree(rq->wqe.alloc_units); 612 } 613 614 static void mlx5e_rq_err_cqe_work(struct work_struct *recover_work) 615 { 616 struct mlx5e_rq *rq = container_of(recover_work, struct mlx5e_rq, recover_work); 617 618 mlx5e_reporter_rq_cqe_err(rq); 619 } 620 621 static int mlx5e_alloc_mpwqe_rq_drop_page(struct mlx5e_rq *rq) 622 { 623 rq->wqe_overflow.page = alloc_page(GFP_KERNEL); 624 if (!rq->wqe_overflow.page) 625 return -ENOMEM; 626 627 rq->wqe_overflow.addr = dma_map_page(rq->pdev, rq->wqe_overflow.page, 0, 628 PAGE_SIZE, rq->buff.map_dir); 629 if (dma_mapping_error(rq->pdev, rq->wqe_overflow.addr)) { 630 __free_page(rq->wqe_overflow.page); 631 return -ENOMEM; 632 } 633 return 0; 634 } 635 636 static void mlx5e_free_mpwqe_rq_drop_page(struct mlx5e_rq *rq) 637 { 638 dma_unmap_page(rq->pdev, rq->wqe_overflow.addr, PAGE_SIZE, 639 rq->buff.map_dir); 640 __free_page(rq->wqe_overflow.page); 641 } 642 643 static int mlx5e_init_rxq_rq(struct mlx5e_channel *c, struct mlx5e_params *params, 644 u32 xdp_frag_size, struct mlx5e_rq *rq) 645 { 646 struct mlx5_core_dev *mdev = c->mdev; 647 int err; 648 649 rq->wq_type = params->rq_wq_type; 650 rq->pdev = c->pdev; 651 rq->netdev = c->netdev; 652 rq->priv = c->priv; 653 rq->tstamp = c->tstamp; 654 rq->clock = &mdev->clock; 655 rq->icosq = &c->icosq; 656 rq->ix = c->ix; 657 rq->channel = c; 658 rq->mdev = mdev; 659 rq->hw_mtu = 660 MLX5E_SW2HW_MTU(params, params->sw_mtu) - ETH_FCS_LEN * !params->scatter_fcs_en; 661 rq->xdpsq = &c->rq_xdpsq; 662 rq->stats = &c->priv->channel_stats[c->ix]->rq; 663 rq->ptp_cyc2time = mlx5_rq_ts_translator(mdev); 664 err = mlx5e_rq_set_handlers(rq, params, NULL); 665 if (err) 666 return err; 667 668 return __xdp_rxq_info_reg(&rq->xdp_rxq, rq->netdev, rq->ix, c->napi.napi_id, 669 xdp_frag_size); 670 } 671 672 static int mlx5_rq_shampo_alloc(struct mlx5_core_dev *mdev, 673 struct mlx5e_params *params, 674 struct mlx5e_rq_param *rqp, 675 struct mlx5e_rq *rq, 676 u32 *pool_size, 677 int node) 678 { 679 void *wqc = MLX5_ADDR_OF(rqc, rqp->rqc, wq); 680 int wq_size; 681 int err; 682 683 if (!test_bit(MLX5E_RQ_STATE_SHAMPO, &rq->state)) 684 return 0; 685 err = mlx5e_rq_shampo_hd_alloc(rq, node); 686 if (err) 687 goto out; 688 rq->mpwqe.shampo->hd_per_wq = 689 mlx5e_shampo_hd_per_wq(mdev, params, rqp); 690 err = mlx5e_create_rq_hd_umr_mkey(mdev, rq); 691 if (err) 692 goto err_shampo_hd; 693 err = mlx5e_rq_shampo_hd_info_alloc(rq, node); 694 if (err) 695 goto err_shampo_info; 696 rq->hw_gro_data = kvzalloc_node(sizeof(*rq->hw_gro_data), GFP_KERNEL, node); 697 if (!rq->hw_gro_data) { 698 err = -ENOMEM; 699 goto err_hw_gro_data; 700 } 701 rq->mpwqe.shampo->key = 702 cpu_to_be32(rq->mpwqe.shampo->mkey); 703 rq->mpwqe.shampo->hd_per_wqe = 704 mlx5e_shampo_hd_per_wqe(mdev, params, rqp); 705 wq_size = BIT(MLX5_GET(wq, wqc, log_wq_sz)); 706 *pool_size += (rq->mpwqe.shampo->hd_per_wqe * wq_size) / 707 MLX5E_SHAMPO_WQ_HEADER_PER_PAGE; 708 return 0; 709 710 err_hw_gro_data: 711 mlx5e_rq_shampo_hd_info_free(rq); 712 err_shampo_info: 713 mlx5_core_destroy_mkey(mdev, rq->mpwqe.shampo->mkey); 714 err_shampo_hd: 715 mlx5e_rq_shampo_hd_free(rq); 716 out: 717 return err; 718 } 719 720 static void mlx5e_rq_free_shampo(struct mlx5e_rq *rq) 721 { 722 if (!test_bit(MLX5E_RQ_STATE_SHAMPO, &rq->state)) 723 return; 724 725 kvfree(rq->hw_gro_data); 726 mlx5e_rq_shampo_hd_info_free(rq); 727 mlx5_core_destroy_mkey(rq->mdev, rq->mpwqe.shampo->mkey); 728 mlx5e_rq_shampo_hd_free(rq); 729 } 730 731 static int mlx5e_alloc_rq(struct mlx5e_params *params, 732 struct mlx5e_xsk_param *xsk, 733 struct mlx5e_rq_param *rqp, 734 int node, struct mlx5e_rq *rq) 735 { 736 struct mlx5_core_dev *mdev = rq->mdev; 737 void *rqc = rqp->rqc; 738 void *rqc_wq = MLX5_ADDR_OF(rqc, rqc, wq); 739 u32 pool_size; 740 int wq_sz; 741 int err; 742 int i; 743 744 rqp->wq.db_numa_node = node; 745 INIT_WORK(&rq->recover_work, mlx5e_rq_err_cqe_work); 746 747 if (params->xdp_prog) 748 bpf_prog_inc(params->xdp_prog); 749 RCU_INIT_POINTER(rq->xdp_prog, params->xdp_prog); 750 751 rq->buff.map_dir = params->xdp_prog ? DMA_BIDIRECTIONAL : DMA_FROM_DEVICE; 752 rq->buff.headroom = mlx5e_get_rq_headroom(mdev, params, xsk); 753 pool_size = 1 << params->log_rq_mtu_frames; 754 755 rq->mkey_be = cpu_to_be32(mdev->mlx5e_res.hw_objs.mkey); 756 757 switch (rq->wq_type) { 758 case MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ: 759 err = mlx5_wq_ll_create(mdev, &rqp->wq, rqc_wq, &rq->mpwqe.wq, 760 &rq->wq_ctrl); 761 if (err) 762 goto err_rq_xdp_prog; 763 764 err = mlx5e_alloc_mpwqe_rq_drop_page(rq); 765 if (err) 766 goto err_rq_wq_destroy; 767 768 rq->mpwqe.wq.db = &rq->mpwqe.wq.db[MLX5_RCV_DBR]; 769 770 wq_sz = mlx5_wq_ll_get_size(&rq->mpwqe.wq); 771 772 rq->mpwqe.page_shift = mlx5e_mpwrq_page_shift(mdev, xsk); 773 rq->mpwqe.umr_mode = mlx5e_mpwrq_umr_mode(mdev, xsk); 774 rq->mpwqe.pages_per_wqe = 775 mlx5e_mpwrq_pages_per_wqe(mdev, rq->mpwqe.page_shift, 776 rq->mpwqe.umr_mode); 777 rq->mpwqe.umr_wqebbs = 778 mlx5e_mpwrq_umr_wqebbs(mdev, rq->mpwqe.page_shift, 779 rq->mpwqe.umr_mode); 780 rq->mpwqe.mtts_per_wqe = 781 mlx5e_mpwrq_mtts_per_wqe(mdev, rq->mpwqe.page_shift, 782 rq->mpwqe.umr_mode); 783 784 pool_size = rq->mpwqe.pages_per_wqe << 785 mlx5e_mpwqe_get_log_rq_size(mdev, params, xsk); 786 787 if (!mlx5e_rx_mpwqe_is_linear_skb(mdev, params, xsk) && params->xdp_prog) 788 pool_size *= 2; /* additional page per packet for the linear part */ 789 790 rq->mpwqe.log_stride_sz = mlx5e_mpwqe_get_log_stride_size(mdev, params, xsk); 791 rq->mpwqe.num_strides = 792 BIT(mlx5e_mpwqe_get_log_num_strides(mdev, params, xsk)); 793 rq->mpwqe.min_wqe_bulk = mlx5e_mpwqe_get_min_wqe_bulk(wq_sz); 794 795 rq->buff.frame0_sz = (1 << rq->mpwqe.log_stride_sz); 796 797 err = mlx5e_create_rq_umr_mkey(mdev, rq); 798 if (err) 799 goto err_rq_drop_page; 800 801 err = mlx5e_rq_alloc_mpwqe_info(rq, node); 802 if (err) 803 goto err_rq_mkey; 804 805 err = mlx5_rq_shampo_alloc(mdev, params, rqp, rq, &pool_size, node); 806 if (err) 807 goto err_free_mpwqe_info; 808 809 break; 810 default: /* MLX5_WQ_TYPE_CYCLIC */ 811 err = mlx5_wq_cyc_create(mdev, &rqp->wq, rqc_wq, &rq->wqe.wq, 812 &rq->wq_ctrl); 813 if (err) 814 goto err_rq_xdp_prog; 815 816 rq->wqe.wq.db = &rq->wqe.wq.db[MLX5_RCV_DBR]; 817 818 wq_sz = mlx5_wq_cyc_get_size(&rq->wqe.wq); 819 820 rq->wqe.info = rqp->frags_info; 821 rq->buff.frame0_sz = rq->wqe.info.arr[0].frag_stride; 822 823 err = mlx5e_init_wqe_alloc_info(rq, node); 824 if (err) 825 goto err_rq_wq_destroy; 826 } 827 828 if (xsk) { 829 err = xdp_rxq_info_reg_mem_model(&rq->xdp_rxq, 830 MEM_TYPE_XSK_BUFF_POOL, NULL); 831 xsk_pool_set_rxq_info(rq->xsk_pool, &rq->xdp_rxq); 832 } else { 833 /* Create a page_pool and register it with rxq */ 834 struct page_pool_params pp_params = { 0 }; 835 836 pp_params.order = 0; 837 pp_params.flags = PP_FLAG_DMA_MAP | PP_FLAG_DMA_SYNC_DEV | PP_FLAG_PAGE_FRAG; 838 pp_params.pool_size = pool_size; 839 pp_params.nid = node; 840 pp_params.dev = rq->pdev; 841 pp_params.napi = rq->cq.napi; 842 pp_params.dma_dir = rq->buff.map_dir; 843 pp_params.max_len = PAGE_SIZE; 844 845 /* page_pool can be used even when there is no rq->xdp_prog, 846 * given page_pool does not handle DMA mapping there is no 847 * required state to clear. And page_pool gracefully handle 848 * elevated refcnt. 849 */ 850 rq->page_pool = page_pool_create(&pp_params); 851 if (IS_ERR(rq->page_pool)) { 852 err = PTR_ERR(rq->page_pool); 853 rq->page_pool = NULL; 854 goto err_free_by_rq_type; 855 } 856 if (xdp_rxq_info_is_reg(&rq->xdp_rxq)) 857 err = xdp_rxq_info_reg_mem_model(&rq->xdp_rxq, 858 MEM_TYPE_PAGE_POOL, rq->page_pool); 859 } 860 if (err) 861 goto err_destroy_page_pool; 862 863 for (i = 0; i < wq_sz; i++) { 864 if (rq->wq_type == MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ) { 865 struct mlx5e_rx_wqe_ll *wqe = 866 mlx5_wq_ll_get_wqe(&rq->mpwqe.wq, i); 867 u32 byte_count = 868 rq->mpwqe.num_strides << rq->mpwqe.log_stride_sz; 869 u64 dma_offset = mul_u32_u32(i, rq->mpwqe.mtts_per_wqe) << 870 rq->mpwqe.page_shift; 871 u16 headroom = test_bit(MLX5E_RQ_STATE_SHAMPO, &rq->state) ? 872 0 : rq->buff.headroom; 873 874 wqe->data[0].addr = cpu_to_be64(dma_offset + headroom); 875 wqe->data[0].byte_count = cpu_to_be32(byte_count); 876 wqe->data[0].lkey = rq->mpwqe.umr_mkey_be; 877 } else { 878 struct mlx5e_rx_wqe_cyc *wqe = 879 mlx5_wq_cyc_get_wqe(&rq->wqe.wq, i); 880 int f; 881 882 for (f = 0; f < rq->wqe.info.num_frags; f++) { 883 u32 frag_size = rq->wqe.info.arr[f].frag_size | 884 MLX5_HW_START_PADDING; 885 886 wqe->data[f].byte_count = cpu_to_be32(frag_size); 887 wqe->data[f].lkey = rq->mkey_be; 888 } 889 /* check if num_frags is not a pow of two */ 890 if (rq->wqe.info.num_frags < (1 << rq->wqe.info.log_num_frags)) { 891 wqe->data[f].byte_count = 0; 892 wqe->data[f].lkey = params->terminate_lkey_be; 893 wqe->data[f].addr = 0; 894 } 895 } 896 } 897 898 INIT_WORK(&rq->dim.work, mlx5e_rx_dim_work); 899 900 switch (params->rx_cq_moderation.cq_period_mode) { 901 case MLX5_CQ_PERIOD_MODE_START_FROM_CQE: 902 rq->dim.mode = DIM_CQ_PERIOD_MODE_START_FROM_CQE; 903 break; 904 case MLX5_CQ_PERIOD_MODE_START_FROM_EQE: 905 default: 906 rq->dim.mode = DIM_CQ_PERIOD_MODE_START_FROM_EQE; 907 } 908 909 return 0; 910 911 err_destroy_page_pool: 912 page_pool_destroy(rq->page_pool); 913 err_free_by_rq_type: 914 switch (rq->wq_type) { 915 case MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ: 916 mlx5e_rq_free_shampo(rq); 917 err_free_mpwqe_info: 918 kvfree(rq->mpwqe.info); 919 err_rq_mkey: 920 mlx5_core_destroy_mkey(mdev, be32_to_cpu(rq->mpwqe.umr_mkey_be)); 921 err_rq_drop_page: 922 mlx5e_free_mpwqe_rq_drop_page(rq); 923 break; 924 default: /* MLX5_WQ_TYPE_CYCLIC */ 925 mlx5e_free_wqe_alloc_info(rq); 926 } 927 err_rq_wq_destroy: 928 mlx5_wq_destroy(&rq->wq_ctrl); 929 err_rq_xdp_prog: 930 if (params->xdp_prog) 931 bpf_prog_put(params->xdp_prog); 932 933 return err; 934 } 935 936 static void mlx5e_free_rq(struct mlx5e_rq *rq) 937 { 938 struct bpf_prog *old_prog; 939 940 if (xdp_rxq_info_is_reg(&rq->xdp_rxq)) { 941 old_prog = rcu_dereference_protected(rq->xdp_prog, 942 lockdep_is_held(&rq->priv->state_lock)); 943 if (old_prog) 944 bpf_prog_put(old_prog); 945 } 946 947 switch (rq->wq_type) { 948 case MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ: 949 kvfree(rq->mpwqe.info); 950 mlx5_core_destroy_mkey(rq->mdev, be32_to_cpu(rq->mpwqe.umr_mkey_be)); 951 mlx5e_free_mpwqe_rq_drop_page(rq); 952 mlx5e_rq_free_shampo(rq); 953 break; 954 default: /* MLX5_WQ_TYPE_CYCLIC */ 955 mlx5e_free_wqe_alloc_info(rq); 956 } 957 958 xdp_rxq_info_unreg(&rq->xdp_rxq); 959 page_pool_destroy(rq->page_pool); 960 mlx5_wq_destroy(&rq->wq_ctrl); 961 } 962 963 int mlx5e_create_rq(struct mlx5e_rq *rq, struct mlx5e_rq_param *param) 964 { 965 struct mlx5_core_dev *mdev = rq->mdev; 966 u8 ts_format; 967 void *in; 968 void *rqc; 969 void *wq; 970 int inlen; 971 int err; 972 973 inlen = MLX5_ST_SZ_BYTES(create_rq_in) + 974 sizeof(u64) * rq->wq_ctrl.buf.npages; 975 in = kvzalloc(inlen, GFP_KERNEL); 976 if (!in) 977 return -ENOMEM; 978 979 ts_format = mlx5_is_real_time_rq(mdev) ? 980 MLX5_TIMESTAMP_FORMAT_REAL_TIME : 981 MLX5_TIMESTAMP_FORMAT_FREE_RUNNING; 982 rqc = MLX5_ADDR_OF(create_rq_in, in, ctx); 983 wq = MLX5_ADDR_OF(rqc, rqc, wq); 984 985 memcpy(rqc, param->rqc, sizeof(param->rqc)); 986 987 MLX5_SET(rqc, rqc, cqn, rq->cq.mcq.cqn); 988 MLX5_SET(rqc, rqc, state, MLX5_RQC_STATE_RST); 989 MLX5_SET(rqc, rqc, ts_format, ts_format); 990 MLX5_SET(wq, wq, log_wq_pg_sz, rq->wq_ctrl.buf.page_shift - 991 MLX5_ADAPTER_PAGE_SHIFT); 992 MLX5_SET64(wq, wq, dbr_addr, rq->wq_ctrl.db.dma); 993 994 if (test_bit(MLX5E_RQ_STATE_SHAMPO, &rq->state)) { 995 MLX5_SET(wq, wq, log_headers_buffer_entry_num, 996 order_base_2(rq->mpwqe.shampo->hd_per_wq)); 997 MLX5_SET(wq, wq, headers_mkey, rq->mpwqe.shampo->mkey); 998 } 999 1000 mlx5_fill_page_frag_array(&rq->wq_ctrl.buf, 1001 (__be64 *)MLX5_ADDR_OF(wq, wq, pas)); 1002 1003 err = mlx5_core_create_rq(mdev, in, inlen, &rq->rqn); 1004 1005 kvfree(in); 1006 1007 return err; 1008 } 1009 1010 static int mlx5e_modify_rq_state(struct mlx5e_rq *rq, int curr_state, int next_state) 1011 { 1012 struct mlx5_core_dev *mdev = rq->mdev; 1013 1014 void *in; 1015 void *rqc; 1016 int inlen; 1017 int err; 1018 1019 inlen = MLX5_ST_SZ_BYTES(modify_rq_in); 1020 in = kvzalloc(inlen, GFP_KERNEL); 1021 if (!in) 1022 return -ENOMEM; 1023 1024 if (curr_state == MLX5_RQC_STATE_RST && next_state == MLX5_RQC_STATE_RDY) 1025 mlx5e_rqwq_reset(rq); 1026 1027 rqc = MLX5_ADDR_OF(modify_rq_in, in, ctx); 1028 1029 MLX5_SET(modify_rq_in, in, rq_state, curr_state); 1030 MLX5_SET(rqc, rqc, state, next_state); 1031 1032 err = mlx5_core_modify_rq(mdev, rq->rqn, in); 1033 1034 kvfree(in); 1035 1036 return err; 1037 } 1038 1039 static void mlx5e_flush_rq_cq(struct mlx5e_rq *rq) 1040 { 1041 struct mlx5_cqwq *cqwq = &rq->cq.wq; 1042 struct mlx5_cqe64 *cqe; 1043 1044 if (test_bit(MLX5E_RQ_STATE_MINI_CQE_ENHANCED, &rq->state)) { 1045 while ((cqe = mlx5_cqwq_get_cqe_enahnced_comp(cqwq))) 1046 mlx5_cqwq_pop(cqwq); 1047 } else { 1048 while ((cqe = mlx5_cqwq_get_cqe(cqwq))) 1049 mlx5_cqwq_pop(cqwq); 1050 } 1051 1052 mlx5_cqwq_update_db_record(cqwq); 1053 } 1054 1055 int mlx5e_flush_rq(struct mlx5e_rq *rq, int curr_state) 1056 { 1057 struct net_device *dev = rq->netdev; 1058 int err; 1059 1060 err = mlx5e_modify_rq_state(rq, curr_state, MLX5_RQC_STATE_RST); 1061 if (err) { 1062 netdev_err(dev, "Failed to move rq 0x%x to reset\n", rq->rqn); 1063 return err; 1064 } 1065 1066 mlx5e_free_rx_descs(rq); 1067 mlx5e_flush_rq_cq(rq); 1068 1069 err = mlx5e_modify_rq_state(rq, MLX5_RQC_STATE_RST, MLX5_RQC_STATE_RDY); 1070 if (err) { 1071 netdev_err(dev, "Failed to move rq 0x%x to ready\n", rq->rqn); 1072 return err; 1073 } 1074 1075 return 0; 1076 } 1077 1078 static int mlx5e_modify_rq_vsd(struct mlx5e_rq *rq, bool vsd) 1079 { 1080 struct mlx5_core_dev *mdev = rq->mdev; 1081 void *in; 1082 void *rqc; 1083 int inlen; 1084 int err; 1085 1086 inlen = MLX5_ST_SZ_BYTES(modify_rq_in); 1087 in = kvzalloc(inlen, GFP_KERNEL); 1088 if (!in) 1089 return -ENOMEM; 1090 1091 rqc = MLX5_ADDR_OF(modify_rq_in, in, ctx); 1092 1093 MLX5_SET(modify_rq_in, in, rq_state, MLX5_RQC_STATE_RDY); 1094 MLX5_SET64(modify_rq_in, in, modify_bitmask, 1095 MLX5_MODIFY_RQ_IN_MODIFY_BITMASK_VSD); 1096 MLX5_SET(rqc, rqc, vsd, vsd); 1097 MLX5_SET(rqc, rqc, state, MLX5_RQC_STATE_RDY); 1098 1099 err = mlx5_core_modify_rq(mdev, rq->rqn, in); 1100 1101 kvfree(in); 1102 1103 return err; 1104 } 1105 1106 void mlx5e_destroy_rq(struct mlx5e_rq *rq) 1107 { 1108 mlx5_core_destroy_rq(rq->mdev, rq->rqn); 1109 } 1110 1111 int mlx5e_wait_for_min_rx_wqes(struct mlx5e_rq *rq, int wait_time) 1112 { 1113 unsigned long exp_time = jiffies + msecs_to_jiffies(wait_time); 1114 1115 u16 min_wqes = mlx5_min_rx_wqes(rq->wq_type, mlx5e_rqwq_get_size(rq)); 1116 1117 do { 1118 if (mlx5e_rqwq_get_cur_sz(rq) >= min_wqes) 1119 return 0; 1120 1121 msleep(20); 1122 } while (time_before(jiffies, exp_time)); 1123 1124 netdev_warn(rq->netdev, "Failed to get min RX wqes on Channel[%d] RQN[0x%x] wq cur_sz(%d) min_rx_wqes(%d)\n", 1125 rq->ix, rq->rqn, mlx5e_rqwq_get_cur_sz(rq), min_wqes); 1126 1127 mlx5e_reporter_rx_timeout(rq); 1128 return -ETIMEDOUT; 1129 } 1130 1131 void mlx5e_free_rx_missing_descs(struct mlx5e_rq *rq) 1132 { 1133 struct mlx5_wq_ll *wq; 1134 u16 head; 1135 int i; 1136 1137 if (rq->wq_type != MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ) 1138 return; 1139 1140 wq = &rq->mpwqe.wq; 1141 head = wq->head; 1142 1143 /* Release WQEs that are in missing state: they have been 1144 * popped from the list after completion but were not freed 1145 * due to deferred release. 1146 * Also free the linked-list reserved entry, hence the "+ 1". 1147 */ 1148 for (i = 0; i < mlx5_wq_ll_missing(wq) + 1; i++) { 1149 rq->dealloc_wqe(rq, head); 1150 head = mlx5_wq_ll_get_wqe_next_ix(wq, head); 1151 } 1152 1153 if (test_bit(MLX5E_RQ_STATE_SHAMPO, &rq->state)) { 1154 u16 len; 1155 1156 len = (rq->mpwqe.shampo->pi - rq->mpwqe.shampo->ci) & 1157 (rq->mpwqe.shampo->hd_per_wq - 1); 1158 mlx5e_shampo_dealloc_hd(rq, len, rq->mpwqe.shampo->ci, false); 1159 rq->mpwqe.shampo->pi = rq->mpwqe.shampo->ci; 1160 } 1161 1162 rq->mpwqe.actual_wq_head = wq->head; 1163 rq->mpwqe.umr_in_progress = 0; 1164 rq->mpwqe.umr_completed = 0; 1165 } 1166 1167 void mlx5e_free_rx_descs(struct mlx5e_rq *rq) 1168 { 1169 __be16 wqe_ix_be; 1170 u16 wqe_ix; 1171 1172 if (rq->wq_type == MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ) { 1173 struct mlx5_wq_ll *wq = &rq->mpwqe.wq; 1174 1175 mlx5e_free_rx_missing_descs(rq); 1176 1177 while (!mlx5_wq_ll_is_empty(wq)) { 1178 struct mlx5e_rx_wqe_ll *wqe; 1179 1180 wqe_ix_be = *wq->tail_next; 1181 wqe_ix = be16_to_cpu(wqe_ix_be); 1182 wqe = mlx5_wq_ll_get_wqe(wq, wqe_ix); 1183 rq->dealloc_wqe(rq, wqe_ix); 1184 mlx5_wq_ll_pop(wq, wqe_ix_be, 1185 &wqe->next.next_wqe_index); 1186 } 1187 1188 if (test_bit(MLX5E_RQ_STATE_SHAMPO, &rq->state)) 1189 mlx5e_shampo_dealloc_hd(rq, rq->mpwqe.shampo->hd_per_wq, 1190 0, true); 1191 } else { 1192 struct mlx5_wq_cyc *wq = &rq->wqe.wq; 1193 u16 missing = mlx5_wq_cyc_missing(wq); 1194 u16 head = mlx5_wq_cyc_get_head(wq); 1195 1196 while (!mlx5_wq_cyc_is_empty(wq)) { 1197 wqe_ix = mlx5_wq_cyc_get_tail(wq); 1198 rq->dealloc_wqe(rq, wqe_ix); 1199 mlx5_wq_cyc_pop(wq); 1200 } 1201 /* Missing slots might also contain unreleased pages due to 1202 * deferred release. 1203 */ 1204 while (missing--) { 1205 wqe_ix = mlx5_wq_cyc_ctr2ix(wq, head++); 1206 rq->dealloc_wqe(rq, wqe_ix); 1207 } 1208 } 1209 1210 } 1211 1212 int mlx5e_open_rq(struct mlx5e_params *params, struct mlx5e_rq_param *param, 1213 struct mlx5e_xsk_param *xsk, int node, 1214 struct mlx5e_rq *rq) 1215 { 1216 struct mlx5_core_dev *mdev = rq->mdev; 1217 int err; 1218 1219 if (params->packet_merge.type == MLX5E_PACKET_MERGE_SHAMPO) 1220 __set_bit(MLX5E_RQ_STATE_SHAMPO, &rq->state); 1221 1222 err = mlx5e_alloc_rq(params, xsk, param, node, rq); 1223 if (err) 1224 return err; 1225 1226 err = mlx5e_create_rq(rq, param); 1227 if (err) 1228 goto err_free_rq; 1229 1230 err = mlx5e_modify_rq_state(rq, MLX5_RQC_STATE_RST, MLX5_RQC_STATE_RDY); 1231 if (err) 1232 goto err_destroy_rq; 1233 1234 if (MLX5_CAP_ETH(mdev, cqe_checksum_full)) 1235 __set_bit(MLX5E_RQ_STATE_CSUM_FULL, &rq->state); 1236 1237 if (params->rx_dim_enabled) 1238 __set_bit(MLX5E_RQ_STATE_DIM, &rq->state); 1239 1240 /* We disable csum_complete when XDP is enabled since 1241 * XDP programs might manipulate packets which will render 1242 * skb->checksum incorrect. 1243 */ 1244 if (MLX5E_GET_PFLAG(params, MLX5E_PFLAG_RX_NO_CSUM_COMPLETE) || params->xdp_prog) 1245 __set_bit(MLX5E_RQ_STATE_NO_CSUM_COMPLETE, &rq->state); 1246 1247 /* For CQE compression on striding RQ, use stride index provided by 1248 * HW if capability is supported. 1249 */ 1250 if (MLX5E_GET_PFLAG(params, MLX5E_PFLAG_RX_STRIDING_RQ) && 1251 MLX5_CAP_GEN(mdev, mini_cqe_resp_stride_index)) 1252 __set_bit(MLX5E_RQ_STATE_MINI_CQE_HW_STRIDX, &rq->state); 1253 1254 /* For enhanced CQE compression packet processing. decompress 1255 * session according to the enhanced layout. 1256 */ 1257 if (MLX5E_GET_PFLAG(params, MLX5E_PFLAG_RX_CQE_COMPRESS) && 1258 MLX5_CAP_GEN(mdev, enhanced_cqe_compression)) 1259 __set_bit(MLX5E_RQ_STATE_MINI_CQE_ENHANCED, &rq->state); 1260 1261 return 0; 1262 1263 err_destroy_rq: 1264 mlx5e_destroy_rq(rq); 1265 err_free_rq: 1266 mlx5e_free_rq(rq); 1267 1268 return err; 1269 } 1270 1271 void mlx5e_activate_rq(struct mlx5e_rq *rq) 1272 { 1273 set_bit(MLX5E_RQ_STATE_ENABLED, &rq->state); 1274 } 1275 1276 void mlx5e_deactivate_rq(struct mlx5e_rq *rq) 1277 { 1278 clear_bit(MLX5E_RQ_STATE_ENABLED, &rq->state); 1279 synchronize_net(); /* Sync with NAPI to prevent mlx5e_post_rx_wqes. */ 1280 } 1281 1282 void mlx5e_close_rq(struct mlx5e_rq *rq) 1283 { 1284 cancel_work_sync(&rq->dim.work); 1285 cancel_work_sync(&rq->recover_work); 1286 mlx5e_destroy_rq(rq); 1287 mlx5e_free_rx_descs(rq); 1288 mlx5e_free_rq(rq); 1289 } 1290 1291 static void mlx5e_free_xdpsq_db(struct mlx5e_xdpsq *sq) 1292 { 1293 kvfree(sq->db.xdpi_fifo.xi); 1294 kvfree(sq->db.wqe_info); 1295 } 1296 1297 static int mlx5e_alloc_xdpsq_fifo(struct mlx5e_xdpsq *sq, int numa) 1298 { 1299 struct mlx5e_xdp_info_fifo *xdpi_fifo = &sq->db.xdpi_fifo; 1300 int wq_sz = mlx5_wq_cyc_get_size(&sq->wq); 1301 int entries; 1302 size_t size; 1303 1304 /* upper bound for maximum num of entries of all xmit_modes. */ 1305 entries = roundup_pow_of_two(wq_sz * MLX5_SEND_WQEBB_NUM_DS * 1306 MLX5E_XDP_FIFO_ENTRIES2DS_MAX_RATIO); 1307 1308 size = array_size(sizeof(*xdpi_fifo->xi), entries); 1309 xdpi_fifo->xi = kvzalloc_node(size, GFP_KERNEL, numa); 1310 if (!xdpi_fifo->xi) 1311 return -ENOMEM; 1312 1313 xdpi_fifo->pc = &sq->xdpi_fifo_pc; 1314 xdpi_fifo->cc = &sq->xdpi_fifo_cc; 1315 xdpi_fifo->mask = entries - 1; 1316 1317 return 0; 1318 } 1319 1320 static int mlx5e_alloc_xdpsq_db(struct mlx5e_xdpsq *sq, int numa) 1321 { 1322 int wq_sz = mlx5_wq_cyc_get_size(&sq->wq); 1323 size_t size; 1324 int err; 1325 1326 size = array_size(sizeof(*sq->db.wqe_info), wq_sz); 1327 sq->db.wqe_info = kvzalloc_node(size, GFP_KERNEL, numa); 1328 if (!sq->db.wqe_info) 1329 return -ENOMEM; 1330 1331 err = mlx5e_alloc_xdpsq_fifo(sq, numa); 1332 if (err) { 1333 mlx5e_free_xdpsq_db(sq); 1334 return err; 1335 } 1336 1337 return 0; 1338 } 1339 1340 static int mlx5e_alloc_xdpsq(struct mlx5e_channel *c, 1341 struct mlx5e_params *params, 1342 struct xsk_buff_pool *xsk_pool, 1343 struct mlx5e_sq_param *param, 1344 struct mlx5e_xdpsq *sq, 1345 bool is_redirect) 1346 { 1347 void *sqc_wq = MLX5_ADDR_OF(sqc, param->sqc, wq); 1348 struct mlx5_core_dev *mdev = c->mdev; 1349 struct mlx5_wq_cyc *wq = &sq->wq; 1350 int err; 1351 1352 sq->pdev = c->pdev; 1353 sq->mkey_be = c->mkey_be; 1354 sq->channel = c; 1355 sq->uar_map = mdev->mlx5e_res.hw_objs.bfreg.map; 1356 sq->min_inline_mode = params->tx_min_inline_mode; 1357 sq->hw_mtu = MLX5E_SW2HW_MTU(params, params->sw_mtu) - ETH_FCS_LEN; 1358 sq->xsk_pool = xsk_pool; 1359 1360 sq->stats = sq->xsk_pool ? 1361 &c->priv->channel_stats[c->ix]->xsksq : 1362 is_redirect ? 1363 &c->priv->channel_stats[c->ix]->xdpsq : 1364 &c->priv->channel_stats[c->ix]->rq_xdpsq; 1365 sq->stop_room = param->is_mpw ? mlx5e_stop_room_for_mpwqe(mdev) : 1366 mlx5e_stop_room_for_max_wqe(mdev); 1367 sq->max_sq_mpw_wqebbs = mlx5e_get_max_sq_aligned_wqebbs(mdev); 1368 1369 param->wq.db_numa_node = cpu_to_node(c->cpu); 1370 err = mlx5_wq_cyc_create(mdev, ¶m->wq, sqc_wq, wq, &sq->wq_ctrl); 1371 if (err) 1372 return err; 1373 wq->db = &wq->db[MLX5_SND_DBR]; 1374 1375 err = mlx5e_alloc_xdpsq_db(sq, cpu_to_node(c->cpu)); 1376 if (err) 1377 goto err_sq_wq_destroy; 1378 1379 return 0; 1380 1381 err_sq_wq_destroy: 1382 mlx5_wq_destroy(&sq->wq_ctrl); 1383 1384 return err; 1385 } 1386 1387 static void mlx5e_free_xdpsq(struct mlx5e_xdpsq *sq) 1388 { 1389 mlx5e_free_xdpsq_db(sq); 1390 mlx5_wq_destroy(&sq->wq_ctrl); 1391 } 1392 1393 static void mlx5e_free_icosq_db(struct mlx5e_icosq *sq) 1394 { 1395 kvfree(sq->db.wqe_info); 1396 } 1397 1398 static int mlx5e_alloc_icosq_db(struct mlx5e_icosq *sq, int numa) 1399 { 1400 int wq_sz = mlx5_wq_cyc_get_size(&sq->wq); 1401 size_t size; 1402 1403 size = array_size(wq_sz, sizeof(*sq->db.wqe_info)); 1404 sq->db.wqe_info = kvzalloc_node(size, GFP_KERNEL, numa); 1405 if (!sq->db.wqe_info) 1406 return -ENOMEM; 1407 1408 return 0; 1409 } 1410 1411 static void mlx5e_icosq_err_cqe_work(struct work_struct *recover_work) 1412 { 1413 struct mlx5e_icosq *sq = container_of(recover_work, struct mlx5e_icosq, 1414 recover_work); 1415 1416 mlx5e_reporter_icosq_cqe_err(sq); 1417 } 1418 1419 static void mlx5e_async_icosq_err_cqe_work(struct work_struct *recover_work) 1420 { 1421 struct mlx5e_icosq *sq = container_of(recover_work, struct mlx5e_icosq, 1422 recover_work); 1423 1424 /* Not implemented yet. */ 1425 1426 netdev_warn(sq->channel->netdev, "async_icosq recovery is not implemented\n"); 1427 } 1428 1429 static int mlx5e_alloc_icosq(struct mlx5e_channel *c, 1430 struct mlx5e_sq_param *param, 1431 struct mlx5e_icosq *sq, 1432 work_func_t recover_work_func) 1433 { 1434 void *sqc_wq = MLX5_ADDR_OF(sqc, param->sqc, wq); 1435 struct mlx5_core_dev *mdev = c->mdev; 1436 struct mlx5_wq_cyc *wq = &sq->wq; 1437 int err; 1438 1439 sq->channel = c; 1440 sq->uar_map = mdev->mlx5e_res.hw_objs.bfreg.map; 1441 sq->reserved_room = param->stop_room; 1442 1443 param->wq.db_numa_node = cpu_to_node(c->cpu); 1444 err = mlx5_wq_cyc_create(mdev, ¶m->wq, sqc_wq, wq, &sq->wq_ctrl); 1445 if (err) 1446 return err; 1447 wq->db = &wq->db[MLX5_SND_DBR]; 1448 1449 err = mlx5e_alloc_icosq_db(sq, cpu_to_node(c->cpu)); 1450 if (err) 1451 goto err_sq_wq_destroy; 1452 1453 INIT_WORK(&sq->recover_work, recover_work_func); 1454 1455 return 0; 1456 1457 err_sq_wq_destroy: 1458 mlx5_wq_destroy(&sq->wq_ctrl); 1459 1460 return err; 1461 } 1462 1463 static void mlx5e_free_icosq(struct mlx5e_icosq *sq) 1464 { 1465 mlx5e_free_icosq_db(sq); 1466 mlx5_wq_destroy(&sq->wq_ctrl); 1467 } 1468 1469 void mlx5e_free_txqsq_db(struct mlx5e_txqsq *sq) 1470 { 1471 kvfree(sq->db.wqe_info); 1472 kvfree(sq->db.skb_fifo.fifo); 1473 kvfree(sq->db.dma_fifo); 1474 } 1475 1476 int mlx5e_alloc_txqsq_db(struct mlx5e_txqsq *sq, int numa) 1477 { 1478 int wq_sz = mlx5_wq_cyc_get_size(&sq->wq); 1479 int df_sz = wq_sz * MLX5_SEND_WQEBB_NUM_DS; 1480 1481 sq->db.dma_fifo = kvzalloc_node(array_size(df_sz, 1482 sizeof(*sq->db.dma_fifo)), 1483 GFP_KERNEL, numa); 1484 sq->db.skb_fifo.fifo = kvzalloc_node(array_size(df_sz, 1485 sizeof(*sq->db.skb_fifo.fifo)), 1486 GFP_KERNEL, numa); 1487 sq->db.wqe_info = kvzalloc_node(array_size(wq_sz, 1488 sizeof(*sq->db.wqe_info)), 1489 GFP_KERNEL, numa); 1490 if (!sq->db.dma_fifo || !sq->db.skb_fifo.fifo || !sq->db.wqe_info) { 1491 mlx5e_free_txqsq_db(sq); 1492 return -ENOMEM; 1493 } 1494 1495 sq->dma_fifo_mask = df_sz - 1; 1496 1497 sq->db.skb_fifo.pc = &sq->skb_fifo_pc; 1498 sq->db.skb_fifo.cc = &sq->skb_fifo_cc; 1499 sq->db.skb_fifo.mask = df_sz - 1; 1500 1501 return 0; 1502 } 1503 1504 static int mlx5e_alloc_txqsq(struct mlx5e_channel *c, 1505 int txq_ix, 1506 struct mlx5e_params *params, 1507 struct mlx5e_sq_param *param, 1508 struct mlx5e_txqsq *sq, 1509 int tc) 1510 { 1511 void *sqc_wq = MLX5_ADDR_OF(sqc, param->sqc, wq); 1512 struct mlx5_core_dev *mdev = c->mdev; 1513 struct mlx5_wq_cyc *wq = &sq->wq; 1514 int err; 1515 1516 sq->pdev = c->pdev; 1517 sq->clock = &mdev->clock; 1518 sq->mkey_be = c->mkey_be; 1519 sq->netdev = c->netdev; 1520 sq->mdev = c->mdev; 1521 sq->channel = c; 1522 sq->priv = c->priv; 1523 sq->ch_ix = c->ix; 1524 sq->txq_ix = txq_ix; 1525 sq->uar_map = mdev->mlx5e_res.hw_objs.bfreg.map; 1526 sq->min_inline_mode = params->tx_min_inline_mode; 1527 sq->hw_mtu = MLX5E_SW2HW_MTU(params, params->sw_mtu); 1528 sq->max_sq_mpw_wqebbs = mlx5e_get_max_sq_aligned_wqebbs(mdev); 1529 INIT_WORK(&sq->recover_work, mlx5e_tx_err_cqe_work); 1530 if (!MLX5_CAP_ETH(mdev, wqe_vlan_insert)) 1531 set_bit(MLX5E_SQ_STATE_VLAN_NEED_L2_INLINE, &sq->state); 1532 if (mlx5_ipsec_device_caps(c->priv->mdev)) 1533 set_bit(MLX5E_SQ_STATE_IPSEC, &sq->state); 1534 if (param->is_mpw) 1535 set_bit(MLX5E_SQ_STATE_MPWQE, &sq->state); 1536 sq->stop_room = param->stop_room; 1537 sq->ptp_cyc2time = mlx5_sq_ts_translator(mdev); 1538 1539 param->wq.db_numa_node = cpu_to_node(c->cpu); 1540 err = mlx5_wq_cyc_create(mdev, ¶m->wq, sqc_wq, wq, &sq->wq_ctrl); 1541 if (err) 1542 return err; 1543 wq->db = &wq->db[MLX5_SND_DBR]; 1544 1545 err = mlx5e_alloc_txqsq_db(sq, cpu_to_node(c->cpu)); 1546 if (err) 1547 goto err_sq_wq_destroy; 1548 1549 INIT_WORK(&sq->dim.work, mlx5e_tx_dim_work); 1550 sq->dim.mode = params->tx_cq_moderation.cq_period_mode; 1551 1552 return 0; 1553 1554 err_sq_wq_destroy: 1555 mlx5_wq_destroy(&sq->wq_ctrl); 1556 1557 return err; 1558 } 1559 1560 void mlx5e_free_txqsq(struct mlx5e_txqsq *sq) 1561 { 1562 mlx5e_free_txqsq_db(sq); 1563 mlx5_wq_destroy(&sq->wq_ctrl); 1564 } 1565 1566 static int mlx5e_create_sq(struct mlx5_core_dev *mdev, 1567 struct mlx5e_sq_param *param, 1568 struct mlx5e_create_sq_param *csp, 1569 u32 *sqn) 1570 { 1571 u8 ts_format; 1572 void *in; 1573 void *sqc; 1574 void *wq; 1575 int inlen; 1576 int err; 1577 1578 inlen = MLX5_ST_SZ_BYTES(create_sq_in) + 1579 sizeof(u64) * csp->wq_ctrl->buf.npages; 1580 in = kvzalloc(inlen, GFP_KERNEL); 1581 if (!in) 1582 return -ENOMEM; 1583 1584 ts_format = mlx5_is_real_time_sq(mdev) ? 1585 MLX5_TIMESTAMP_FORMAT_REAL_TIME : 1586 MLX5_TIMESTAMP_FORMAT_FREE_RUNNING; 1587 sqc = MLX5_ADDR_OF(create_sq_in, in, ctx); 1588 wq = MLX5_ADDR_OF(sqc, sqc, wq); 1589 1590 memcpy(sqc, param->sqc, sizeof(param->sqc)); 1591 MLX5_SET(sqc, sqc, tis_lst_sz, csp->tis_lst_sz); 1592 MLX5_SET(sqc, sqc, tis_num_0, csp->tisn); 1593 MLX5_SET(sqc, sqc, cqn, csp->cqn); 1594 MLX5_SET(sqc, sqc, ts_cqe_to_dest_cqn, csp->ts_cqe_to_dest_cqn); 1595 MLX5_SET(sqc, sqc, ts_format, ts_format); 1596 1597 1598 if (MLX5_CAP_ETH(mdev, wqe_inline_mode) == MLX5_CAP_INLINE_MODE_VPORT_CONTEXT) 1599 MLX5_SET(sqc, sqc, min_wqe_inline_mode, csp->min_inline_mode); 1600 1601 MLX5_SET(sqc, sqc, state, MLX5_SQC_STATE_RST); 1602 MLX5_SET(sqc, sqc, flush_in_error_en, 1); 1603 1604 MLX5_SET(wq, wq, wq_type, MLX5_WQ_TYPE_CYCLIC); 1605 MLX5_SET(wq, wq, uar_page, mdev->mlx5e_res.hw_objs.bfreg.index); 1606 MLX5_SET(wq, wq, log_wq_pg_sz, csp->wq_ctrl->buf.page_shift - 1607 MLX5_ADAPTER_PAGE_SHIFT); 1608 MLX5_SET64(wq, wq, dbr_addr, csp->wq_ctrl->db.dma); 1609 1610 mlx5_fill_page_frag_array(&csp->wq_ctrl->buf, 1611 (__be64 *)MLX5_ADDR_OF(wq, wq, pas)); 1612 1613 err = mlx5_core_create_sq(mdev, in, inlen, sqn); 1614 1615 kvfree(in); 1616 1617 return err; 1618 } 1619 1620 int mlx5e_modify_sq(struct mlx5_core_dev *mdev, u32 sqn, 1621 struct mlx5e_modify_sq_param *p) 1622 { 1623 u64 bitmask = 0; 1624 void *in; 1625 void *sqc; 1626 int inlen; 1627 int err; 1628 1629 inlen = MLX5_ST_SZ_BYTES(modify_sq_in); 1630 in = kvzalloc(inlen, GFP_KERNEL); 1631 if (!in) 1632 return -ENOMEM; 1633 1634 sqc = MLX5_ADDR_OF(modify_sq_in, in, ctx); 1635 1636 MLX5_SET(modify_sq_in, in, sq_state, p->curr_state); 1637 MLX5_SET(sqc, sqc, state, p->next_state); 1638 if (p->rl_update && p->next_state == MLX5_SQC_STATE_RDY) { 1639 bitmask |= 1; 1640 MLX5_SET(sqc, sqc, packet_pacing_rate_limit_index, p->rl_index); 1641 } 1642 if (p->qos_update && p->next_state == MLX5_SQC_STATE_RDY) { 1643 bitmask |= 1 << 2; 1644 MLX5_SET(sqc, sqc, qos_queue_group_id, p->qos_queue_group_id); 1645 } 1646 MLX5_SET64(modify_sq_in, in, modify_bitmask, bitmask); 1647 1648 err = mlx5_core_modify_sq(mdev, sqn, in); 1649 1650 kvfree(in); 1651 1652 return err; 1653 } 1654 1655 static void mlx5e_destroy_sq(struct mlx5_core_dev *mdev, u32 sqn) 1656 { 1657 mlx5_core_destroy_sq(mdev, sqn); 1658 } 1659 1660 int mlx5e_create_sq_rdy(struct mlx5_core_dev *mdev, 1661 struct mlx5e_sq_param *param, 1662 struct mlx5e_create_sq_param *csp, 1663 u16 qos_queue_group_id, 1664 u32 *sqn) 1665 { 1666 struct mlx5e_modify_sq_param msp = {0}; 1667 int err; 1668 1669 err = mlx5e_create_sq(mdev, param, csp, sqn); 1670 if (err) 1671 return err; 1672 1673 msp.curr_state = MLX5_SQC_STATE_RST; 1674 msp.next_state = MLX5_SQC_STATE_RDY; 1675 if (qos_queue_group_id) { 1676 msp.qos_update = true; 1677 msp.qos_queue_group_id = qos_queue_group_id; 1678 } 1679 err = mlx5e_modify_sq(mdev, *sqn, &msp); 1680 if (err) 1681 mlx5e_destroy_sq(mdev, *sqn); 1682 1683 return err; 1684 } 1685 1686 static int mlx5e_set_sq_maxrate(struct net_device *dev, 1687 struct mlx5e_txqsq *sq, u32 rate); 1688 1689 int mlx5e_open_txqsq(struct mlx5e_channel *c, u32 tisn, int txq_ix, 1690 struct mlx5e_params *params, struct mlx5e_sq_param *param, 1691 struct mlx5e_txqsq *sq, int tc, u16 qos_queue_group_id, 1692 struct mlx5e_sq_stats *sq_stats) 1693 { 1694 struct mlx5e_create_sq_param csp = {}; 1695 u32 tx_rate; 1696 int err; 1697 1698 err = mlx5e_alloc_txqsq(c, txq_ix, params, param, sq, tc); 1699 if (err) 1700 return err; 1701 1702 sq->stats = sq_stats; 1703 1704 csp.tisn = tisn; 1705 csp.tis_lst_sz = 1; 1706 csp.cqn = sq->cq.mcq.cqn; 1707 csp.wq_ctrl = &sq->wq_ctrl; 1708 csp.min_inline_mode = sq->min_inline_mode; 1709 err = mlx5e_create_sq_rdy(c->mdev, param, &csp, qos_queue_group_id, &sq->sqn); 1710 if (err) 1711 goto err_free_txqsq; 1712 1713 tx_rate = c->priv->tx_rates[sq->txq_ix]; 1714 if (tx_rate) 1715 mlx5e_set_sq_maxrate(c->netdev, sq, tx_rate); 1716 1717 if (params->tx_dim_enabled) 1718 sq->state |= BIT(MLX5E_SQ_STATE_DIM); 1719 1720 return 0; 1721 1722 err_free_txqsq: 1723 mlx5e_free_txqsq(sq); 1724 1725 return err; 1726 } 1727 1728 void mlx5e_activate_txqsq(struct mlx5e_txqsq *sq) 1729 { 1730 sq->txq = netdev_get_tx_queue(sq->netdev, sq->txq_ix); 1731 set_bit(MLX5E_SQ_STATE_ENABLED, &sq->state); 1732 netdev_tx_reset_queue(sq->txq); 1733 netif_tx_start_queue(sq->txq); 1734 } 1735 1736 void mlx5e_tx_disable_queue(struct netdev_queue *txq) 1737 { 1738 __netif_tx_lock_bh(txq); 1739 netif_tx_stop_queue(txq); 1740 __netif_tx_unlock_bh(txq); 1741 } 1742 1743 void mlx5e_deactivate_txqsq(struct mlx5e_txqsq *sq) 1744 { 1745 struct mlx5_wq_cyc *wq = &sq->wq; 1746 1747 clear_bit(MLX5E_SQ_STATE_ENABLED, &sq->state); 1748 synchronize_net(); /* Sync with NAPI to prevent netif_tx_wake_queue. */ 1749 1750 mlx5e_tx_disable_queue(sq->txq); 1751 1752 /* last doorbell out, godspeed .. */ 1753 if (mlx5e_wqc_has_room_for(wq, sq->cc, sq->pc, 1)) { 1754 u16 pi = mlx5_wq_cyc_ctr2ix(wq, sq->pc); 1755 struct mlx5e_tx_wqe *nop; 1756 1757 sq->db.wqe_info[pi] = (struct mlx5e_tx_wqe_info) { 1758 .num_wqebbs = 1, 1759 }; 1760 1761 nop = mlx5e_post_nop(wq, sq->sqn, &sq->pc); 1762 mlx5e_notify_hw(wq, sq->pc, sq->uar_map, &nop->ctrl); 1763 } 1764 } 1765 1766 void mlx5e_close_txqsq(struct mlx5e_txqsq *sq) 1767 { 1768 struct mlx5_core_dev *mdev = sq->mdev; 1769 struct mlx5_rate_limit rl = {0}; 1770 1771 cancel_work_sync(&sq->dim.work); 1772 cancel_work_sync(&sq->recover_work); 1773 mlx5e_destroy_sq(mdev, sq->sqn); 1774 if (sq->rate_limit) { 1775 rl.rate = sq->rate_limit; 1776 mlx5_rl_remove_rate(mdev, &rl); 1777 } 1778 mlx5e_free_txqsq_descs(sq); 1779 mlx5e_free_txqsq(sq); 1780 } 1781 1782 void mlx5e_tx_err_cqe_work(struct work_struct *recover_work) 1783 { 1784 struct mlx5e_txqsq *sq = container_of(recover_work, struct mlx5e_txqsq, 1785 recover_work); 1786 1787 mlx5e_reporter_tx_err_cqe(sq); 1788 } 1789 1790 static int mlx5e_open_icosq(struct mlx5e_channel *c, struct mlx5e_params *params, 1791 struct mlx5e_sq_param *param, struct mlx5e_icosq *sq, 1792 work_func_t recover_work_func) 1793 { 1794 struct mlx5e_create_sq_param csp = {}; 1795 int err; 1796 1797 err = mlx5e_alloc_icosq(c, param, sq, recover_work_func); 1798 if (err) 1799 return err; 1800 1801 csp.cqn = sq->cq.mcq.cqn; 1802 csp.wq_ctrl = &sq->wq_ctrl; 1803 csp.min_inline_mode = params->tx_min_inline_mode; 1804 err = mlx5e_create_sq_rdy(c->mdev, param, &csp, 0, &sq->sqn); 1805 if (err) 1806 goto err_free_icosq; 1807 1808 if (param->is_tls) { 1809 sq->ktls_resync = mlx5e_ktls_rx_resync_create_resp_list(); 1810 if (IS_ERR(sq->ktls_resync)) { 1811 err = PTR_ERR(sq->ktls_resync); 1812 goto err_destroy_icosq; 1813 } 1814 } 1815 return 0; 1816 1817 err_destroy_icosq: 1818 mlx5e_destroy_sq(c->mdev, sq->sqn); 1819 err_free_icosq: 1820 mlx5e_free_icosq(sq); 1821 1822 return err; 1823 } 1824 1825 void mlx5e_activate_icosq(struct mlx5e_icosq *icosq) 1826 { 1827 set_bit(MLX5E_SQ_STATE_ENABLED, &icosq->state); 1828 } 1829 1830 void mlx5e_deactivate_icosq(struct mlx5e_icosq *icosq) 1831 { 1832 clear_bit(MLX5E_SQ_STATE_ENABLED, &icosq->state); 1833 synchronize_net(); /* Sync with NAPI. */ 1834 } 1835 1836 static void mlx5e_close_icosq(struct mlx5e_icosq *sq) 1837 { 1838 struct mlx5e_channel *c = sq->channel; 1839 1840 if (sq->ktls_resync) 1841 mlx5e_ktls_rx_resync_destroy_resp_list(sq->ktls_resync); 1842 mlx5e_destroy_sq(c->mdev, sq->sqn); 1843 mlx5e_free_icosq_descs(sq); 1844 mlx5e_free_icosq(sq); 1845 } 1846 1847 int mlx5e_open_xdpsq(struct mlx5e_channel *c, struct mlx5e_params *params, 1848 struct mlx5e_sq_param *param, struct xsk_buff_pool *xsk_pool, 1849 struct mlx5e_xdpsq *sq, bool is_redirect) 1850 { 1851 struct mlx5e_create_sq_param csp = {}; 1852 int err; 1853 1854 err = mlx5e_alloc_xdpsq(c, params, xsk_pool, param, sq, is_redirect); 1855 if (err) 1856 return err; 1857 1858 csp.tis_lst_sz = 1; 1859 csp.tisn = c->priv->tisn[c->lag_port][0]; /* tc = 0 */ 1860 csp.cqn = sq->cq.mcq.cqn; 1861 csp.wq_ctrl = &sq->wq_ctrl; 1862 csp.min_inline_mode = sq->min_inline_mode; 1863 set_bit(MLX5E_SQ_STATE_ENABLED, &sq->state); 1864 1865 if (param->is_xdp_mb) 1866 set_bit(MLX5E_SQ_STATE_XDP_MULTIBUF, &sq->state); 1867 1868 err = mlx5e_create_sq_rdy(c->mdev, param, &csp, 0, &sq->sqn); 1869 if (err) 1870 goto err_free_xdpsq; 1871 1872 mlx5e_set_xmit_fp(sq, param->is_mpw); 1873 1874 if (!param->is_mpw && !test_bit(MLX5E_SQ_STATE_XDP_MULTIBUF, &sq->state)) { 1875 unsigned int ds_cnt = MLX5E_TX_WQE_EMPTY_DS_COUNT + 1; 1876 unsigned int inline_hdr_sz = 0; 1877 int i; 1878 1879 if (sq->min_inline_mode != MLX5_INLINE_MODE_NONE) { 1880 inline_hdr_sz = MLX5E_XDP_MIN_INLINE; 1881 ds_cnt++; 1882 } 1883 1884 /* Pre initialize fixed WQE fields */ 1885 for (i = 0; i < mlx5_wq_cyc_get_size(&sq->wq); i++) { 1886 struct mlx5e_tx_wqe *wqe = mlx5_wq_cyc_get_wqe(&sq->wq, i); 1887 struct mlx5_wqe_ctrl_seg *cseg = &wqe->ctrl; 1888 struct mlx5_wqe_eth_seg *eseg = &wqe->eth; 1889 1890 sq->db.wqe_info[i] = (struct mlx5e_xdp_wqe_info) { 1891 .num_wqebbs = 1, 1892 .num_pkts = 1, 1893 }; 1894 1895 cseg->qpn_ds = cpu_to_be32((sq->sqn << 8) | ds_cnt); 1896 eseg->inline_hdr.sz = cpu_to_be16(inline_hdr_sz); 1897 } 1898 } 1899 1900 return 0; 1901 1902 err_free_xdpsq: 1903 clear_bit(MLX5E_SQ_STATE_ENABLED, &sq->state); 1904 mlx5e_free_xdpsq(sq); 1905 1906 return err; 1907 } 1908 1909 void mlx5e_close_xdpsq(struct mlx5e_xdpsq *sq) 1910 { 1911 struct mlx5e_channel *c = sq->channel; 1912 1913 clear_bit(MLX5E_SQ_STATE_ENABLED, &sq->state); 1914 synchronize_net(); /* Sync with NAPI. */ 1915 1916 mlx5e_destroy_sq(c->mdev, sq->sqn); 1917 mlx5e_free_xdpsq_descs(sq); 1918 mlx5e_free_xdpsq(sq); 1919 } 1920 1921 static int mlx5e_alloc_cq_common(struct mlx5e_priv *priv, 1922 struct mlx5e_cq_param *param, 1923 struct mlx5e_cq *cq) 1924 { 1925 struct mlx5_core_dev *mdev = priv->mdev; 1926 struct mlx5_core_cq *mcq = &cq->mcq; 1927 int err; 1928 u32 i; 1929 1930 err = mlx5_cqwq_create(mdev, ¶m->wq, param->cqc, &cq->wq, 1931 &cq->wq_ctrl); 1932 if (err) 1933 return err; 1934 1935 mcq->cqe_sz = 64; 1936 mcq->set_ci_db = cq->wq_ctrl.db.db; 1937 mcq->arm_db = cq->wq_ctrl.db.db + 1; 1938 *mcq->set_ci_db = 0; 1939 *mcq->arm_db = 0; 1940 mcq->vector = param->eq_ix; 1941 mcq->comp = mlx5e_completion_event; 1942 mcq->event = mlx5e_cq_error_event; 1943 1944 for (i = 0; i < mlx5_cqwq_get_size(&cq->wq); i++) { 1945 struct mlx5_cqe64 *cqe = mlx5_cqwq_get_wqe(&cq->wq, i); 1946 1947 cqe->op_own = 0xf1; 1948 cqe->validity_iteration_count = 0xff; 1949 } 1950 1951 cq->mdev = mdev; 1952 cq->netdev = priv->netdev; 1953 cq->priv = priv; 1954 1955 return 0; 1956 } 1957 1958 static int mlx5e_alloc_cq(struct mlx5e_priv *priv, 1959 struct mlx5e_cq_param *param, 1960 struct mlx5e_create_cq_param *ccp, 1961 struct mlx5e_cq *cq) 1962 { 1963 int err; 1964 1965 param->wq.buf_numa_node = ccp->node; 1966 param->wq.db_numa_node = ccp->node; 1967 param->eq_ix = ccp->ix; 1968 1969 err = mlx5e_alloc_cq_common(priv, param, cq); 1970 1971 cq->napi = ccp->napi; 1972 cq->ch_stats = ccp->ch_stats; 1973 1974 return err; 1975 } 1976 1977 static void mlx5e_free_cq(struct mlx5e_cq *cq) 1978 { 1979 mlx5_wq_destroy(&cq->wq_ctrl); 1980 } 1981 1982 static int mlx5e_create_cq(struct mlx5e_cq *cq, struct mlx5e_cq_param *param) 1983 { 1984 u32 out[MLX5_ST_SZ_DW(create_cq_out)]; 1985 struct mlx5_core_dev *mdev = cq->mdev; 1986 struct mlx5_core_cq *mcq = &cq->mcq; 1987 1988 void *in; 1989 void *cqc; 1990 int inlen; 1991 int eqn; 1992 int err; 1993 1994 err = mlx5_comp_eqn_get(mdev, param->eq_ix, &eqn); 1995 if (err) 1996 return err; 1997 1998 inlen = MLX5_ST_SZ_BYTES(create_cq_in) + 1999 sizeof(u64) * cq->wq_ctrl.buf.npages; 2000 in = kvzalloc(inlen, GFP_KERNEL); 2001 if (!in) 2002 return -ENOMEM; 2003 2004 cqc = MLX5_ADDR_OF(create_cq_in, in, cq_context); 2005 2006 memcpy(cqc, param->cqc, sizeof(param->cqc)); 2007 2008 mlx5_fill_page_frag_array(&cq->wq_ctrl.buf, 2009 (__be64 *)MLX5_ADDR_OF(create_cq_in, in, pas)); 2010 2011 MLX5_SET(cqc, cqc, cq_period_mode, param->cq_period_mode); 2012 MLX5_SET(cqc, cqc, c_eqn_or_apu_element, eqn); 2013 MLX5_SET(cqc, cqc, uar_page, mdev->priv.uar->index); 2014 MLX5_SET(cqc, cqc, log_page_size, cq->wq_ctrl.buf.page_shift - 2015 MLX5_ADAPTER_PAGE_SHIFT); 2016 MLX5_SET64(cqc, cqc, dbr_addr, cq->wq_ctrl.db.dma); 2017 2018 err = mlx5_core_create_cq(mdev, mcq, in, inlen, out, sizeof(out)); 2019 2020 kvfree(in); 2021 2022 if (err) 2023 return err; 2024 2025 mlx5e_cq_arm(cq); 2026 2027 return 0; 2028 } 2029 2030 static void mlx5e_destroy_cq(struct mlx5e_cq *cq) 2031 { 2032 mlx5_core_destroy_cq(cq->mdev, &cq->mcq); 2033 } 2034 2035 int mlx5e_open_cq(struct mlx5e_priv *priv, struct dim_cq_moder moder, 2036 struct mlx5e_cq_param *param, struct mlx5e_create_cq_param *ccp, 2037 struct mlx5e_cq *cq) 2038 { 2039 struct mlx5_core_dev *mdev = priv->mdev; 2040 int err; 2041 2042 err = mlx5e_alloc_cq(priv, param, ccp, cq); 2043 if (err) 2044 return err; 2045 2046 err = mlx5e_create_cq(cq, param); 2047 if (err) 2048 goto err_free_cq; 2049 2050 if (MLX5_CAP_GEN(mdev, cq_moderation)) 2051 mlx5_core_modify_cq_moderation(mdev, &cq->mcq, moder.usec, moder.pkts); 2052 return 0; 2053 2054 err_free_cq: 2055 mlx5e_free_cq(cq); 2056 2057 return err; 2058 } 2059 2060 void mlx5e_close_cq(struct mlx5e_cq *cq) 2061 { 2062 mlx5e_destroy_cq(cq); 2063 mlx5e_free_cq(cq); 2064 } 2065 2066 static int mlx5e_open_tx_cqs(struct mlx5e_channel *c, 2067 struct mlx5e_params *params, 2068 struct mlx5e_create_cq_param *ccp, 2069 struct mlx5e_channel_param *cparam) 2070 { 2071 int err; 2072 int tc; 2073 2074 for (tc = 0; tc < c->num_tc; tc++) { 2075 err = mlx5e_open_cq(c->priv, params->tx_cq_moderation, &cparam->txq_sq.cqp, 2076 ccp, &c->sq[tc].cq); 2077 if (err) 2078 goto err_close_tx_cqs; 2079 } 2080 2081 return 0; 2082 2083 err_close_tx_cqs: 2084 for (tc--; tc >= 0; tc--) 2085 mlx5e_close_cq(&c->sq[tc].cq); 2086 2087 return err; 2088 } 2089 2090 static void mlx5e_close_tx_cqs(struct mlx5e_channel *c) 2091 { 2092 int tc; 2093 2094 for (tc = 0; tc < c->num_tc; tc++) 2095 mlx5e_close_cq(&c->sq[tc].cq); 2096 } 2097 2098 static int mlx5e_mqprio_txq_to_tc(struct netdev_tc_txq *tc_to_txq, unsigned int txq) 2099 { 2100 int tc; 2101 2102 for (tc = 0; tc < TC_MAX_QUEUE; tc++) 2103 if (txq - tc_to_txq[tc].offset < tc_to_txq[tc].count) 2104 return tc; 2105 2106 WARN(1, "Unexpected TCs configuration. No match found for txq %u", txq); 2107 return -ENOENT; 2108 } 2109 2110 static int mlx5e_txq_get_qos_node_hw_id(struct mlx5e_params *params, int txq_ix, 2111 u32 *hw_id) 2112 { 2113 int tc; 2114 2115 if (params->mqprio.mode != TC_MQPRIO_MODE_CHANNEL) { 2116 *hw_id = 0; 2117 return 0; 2118 } 2119 2120 tc = mlx5e_mqprio_txq_to_tc(params->mqprio.tc_to_txq, txq_ix); 2121 if (tc < 0) 2122 return tc; 2123 2124 if (tc >= params->mqprio.num_tc) { 2125 WARN(1, "Unexpected TCs configuration. tc %d is out of range of %u", 2126 tc, params->mqprio.num_tc); 2127 return -EINVAL; 2128 } 2129 2130 *hw_id = params->mqprio.channel.hw_id[tc]; 2131 return 0; 2132 } 2133 2134 static int mlx5e_open_sqs(struct mlx5e_channel *c, 2135 struct mlx5e_params *params, 2136 struct mlx5e_channel_param *cparam) 2137 { 2138 int err, tc; 2139 2140 for (tc = 0; tc < mlx5e_get_dcb_num_tc(params); tc++) { 2141 int txq_ix = c->ix + tc * params->num_channels; 2142 u32 qos_queue_group_id; 2143 2144 err = mlx5e_txq_get_qos_node_hw_id(params, txq_ix, &qos_queue_group_id); 2145 if (err) 2146 goto err_close_sqs; 2147 2148 err = mlx5e_open_txqsq(c, c->priv->tisn[c->lag_port][tc], txq_ix, 2149 params, &cparam->txq_sq, &c->sq[tc], tc, 2150 qos_queue_group_id, 2151 &c->priv->channel_stats[c->ix]->sq[tc]); 2152 if (err) 2153 goto err_close_sqs; 2154 } 2155 2156 return 0; 2157 2158 err_close_sqs: 2159 for (tc--; tc >= 0; tc--) 2160 mlx5e_close_txqsq(&c->sq[tc]); 2161 2162 return err; 2163 } 2164 2165 static void mlx5e_close_sqs(struct mlx5e_channel *c) 2166 { 2167 int tc; 2168 2169 for (tc = 0; tc < c->num_tc; tc++) 2170 mlx5e_close_txqsq(&c->sq[tc]); 2171 } 2172 2173 static int mlx5e_set_sq_maxrate(struct net_device *dev, 2174 struct mlx5e_txqsq *sq, u32 rate) 2175 { 2176 struct mlx5e_priv *priv = netdev_priv(dev); 2177 struct mlx5_core_dev *mdev = priv->mdev; 2178 struct mlx5e_modify_sq_param msp = {0}; 2179 struct mlx5_rate_limit rl = {0}; 2180 u16 rl_index = 0; 2181 int err; 2182 2183 if (rate == sq->rate_limit) 2184 /* nothing to do */ 2185 return 0; 2186 2187 if (sq->rate_limit) { 2188 rl.rate = sq->rate_limit; 2189 /* remove current rl index to free space to next ones */ 2190 mlx5_rl_remove_rate(mdev, &rl); 2191 } 2192 2193 sq->rate_limit = 0; 2194 2195 if (rate) { 2196 rl.rate = rate; 2197 err = mlx5_rl_add_rate(mdev, &rl_index, &rl); 2198 if (err) { 2199 netdev_err(dev, "Failed configuring rate %u: %d\n", 2200 rate, err); 2201 return err; 2202 } 2203 } 2204 2205 msp.curr_state = MLX5_SQC_STATE_RDY; 2206 msp.next_state = MLX5_SQC_STATE_RDY; 2207 msp.rl_index = rl_index; 2208 msp.rl_update = true; 2209 err = mlx5e_modify_sq(mdev, sq->sqn, &msp); 2210 if (err) { 2211 netdev_err(dev, "Failed configuring rate %u: %d\n", 2212 rate, err); 2213 /* remove the rate from the table */ 2214 if (rate) 2215 mlx5_rl_remove_rate(mdev, &rl); 2216 return err; 2217 } 2218 2219 sq->rate_limit = rate; 2220 return 0; 2221 } 2222 2223 static int mlx5e_set_tx_maxrate(struct net_device *dev, int index, u32 rate) 2224 { 2225 struct mlx5e_priv *priv = netdev_priv(dev); 2226 struct mlx5_core_dev *mdev = priv->mdev; 2227 struct mlx5e_txqsq *sq = priv->txq2sq[index]; 2228 int err = 0; 2229 2230 if (!mlx5_rl_is_supported(mdev)) { 2231 netdev_err(dev, "Rate limiting is not supported on this device\n"); 2232 return -EINVAL; 2233 } 2234 2235 /* rate is given in Mb/sec, HW config is in Kb/sec */ 2236 rate = rate << 10; 2237 2238 /* Check whether rate in valid range, 0 is always valid */ 2239 if (rate && !mlx5_rl_is_in_range(mdev, rate)) { 2240 netdev_err(dev, "TX rate %u, is not in range\n", rate); 2241 return -ERANGE; 2242 } 2243 2244 mutex_lock(&priv->state_lock); 2245 if (test_bit(MLX5E_STATE_OPENED, &priv->state)) 2246 err = mlx5e_set_sq_maxrate(dev, sq, rate); 2247 if (!err) 2248 priv->tx_rates[index] = rate; 2249 mutex_unlock(&priv->state_lock); 2250 2251 return err; 2252 } 2253 2254 static int mlx5e_open_rxq_rq(struct mlx5e_channel *c, struct mlx5e_params *params, 2255 struct mlx5e_rq_param *rq_params) 2256 { 2257 int err; 2258 2259 err = mlx5e_init_rxq_rq(c, params, rq_params->xdp_frag_size, &c->rq); 2260 if (err) 2261 return err; 2262 2263 return mlx5e_open_rq(params, rq_params, NULL, cpu_to_node(c->cpu), &c->rq); 2264 } 2265 2266 static int mlx5e_open_queues(struct mlx5e_channel *c, 2267 struct mlx5e_params *params, 2268 struct mlx5e_channel_param *cparam) 2269 { 2270 struct dim_cq_moder icocq_moder = {0, 0}; 2271 struct mlx5e_create_cq_param ccp; 2272 int err; 2273 2274 mlx5e_build_create_cq_param(&ccp, c); 2275 2276 err = mlx5e_open_cq(c->priv, icocq_moder, &cparam->async_icosq.cqp, &ccp, 2277 &c->async_icosq.cq); 2278 if (err) 2279 return err; 2280 2281 err = mlx5e_open_cq(c->priv, icocq_moder, &cparam->icosq.cqp, &ccp, 2282 &c->icosq.cq); 2283 if (err) 2284 goto err_close_async_icosq_cq; 2285 2286 err = mlx5e_open_tx_cqs(c, params, &ccp, cparam); 2287 if (err) 2288 goto err_close_icosq_cq; 2289 2290 err = mlx5e_open_cq(c->priv, params->tx_cq_moderation, &cparam->xdp_sq.cqp, &ccp, 2291 &c->xdpsq.cq); 2292 if (err) 2293 goto err_close_tx_cqs; 2294 2295 err = mlx5e_open_cq(c->priv, params->rx_cq_moderation, &cparam->rq.cqp, &ccp, 2296 &c->rq.cq); 2297 if (err) 2298 goto err_close_xdp_tx_cqs; 2299 2300 err = c->xdp ? mlx5e_open_cq(c->priv, params->tx_cq_moderation, &cparam->xdp_sq.cqp, 2301 &ccp, &c->rq_xdpsq.cq) : 0; 2302 if (err) 2303 goto err_close_rx_cq; 2304 2305 spin_lock_init(&c->async_icosq_lock); 2306 2307 err = mlx5e_open_icosq(c, params, &cparam->async_icosq, &c->async_icosq, 2308 mlx5e_async_icosq_err_cqe_work); 2309 if (err) 2310 goto err_close_xdpsq_cq; 2311 2312 mutex_init(&c->icosq_recovery_lock); 2313 2314 err = mlx5e_open_icosq(c, params, &cparam->icosq, &c->icosq, 2315 mlx5e_icosq_err_cqe_work); 2316 if (err) 2317 goto err_close_async_icosq; 2318 2319 err = mlx5e_open_sqs(c, params, cparam); 2320 if (err) 2321 goto err_close_icosq; 2322 2323 err = mlx5e_open_rxq_rq(c, params, &cparam->rq); 2324 if (err) 2325 goto err_close_sqs; 2326 2327 if (c->xdp) { 2328 err = mlx5e_open_xdpsq(c, params, &cparam->xdp_sq, NULL, 2329 &c->rq_xdpsq, false); 2330 if (err) 2331 goto err_close_rq; 2332 } 2333 2334 err = mlx5e_open_xdpsq(c, params, &cparam->xdp_sq, NULL, &c->xdpsq, true); 2335 if (err) 2336 goto err_close_xdp_sq; 2337 2338 return 0; 2339 2340 err_close_xdp_sq: 2341 if (c->xdp) 2342 mlx5e_close_xdpsq(&c->rq_xdpsq); 2343 2344 err_close_rq: 2345 mlx5e_close_rq(&c->rq); 2346 2347 err_close_sqs: 2348 mlx5e_close_sqs(c); 2349 2350 err_close_icosq: 2351 mlx5e_close_icosq(&c->icosq); 2352 2353 err_close_async_icosq: 2354 mlx5e_close_icosq(&c->async_icosq); 2355 2356 err_close_xdpsq_cq: 2357 if (c->xdp) 2358 mlx5e_close_cq(&c->rq_xdpsq.cq); 2359 2360 err_close_rx_cq: 2361 mlx5e_close_cq(&c->rq.cq); 2362 2363 err_close_xdp_tx_cqs: 2364 mlx5e_close_cq(&c->xdpsq.cq); 2365 2366 err_close_tx_cqs: 2367 mlx5e_close_tx_cqs(c); 2368 2369 err_close_icosq_cq: 2370 mlx5e_close_cq(&c->icosq.cq); 2371 2372 err_close_async_icosq_cq: 2373 mlx5e_close_cq(&c->async_icosq.cq); 2374 2375 return err; 2376 } 2377 2378 static void mlx5e_close_queues(struct mlx5e_channel *c) 2379 { 2380 mlx5e_close_xdpsq(&c->xdpsq); 2381 if (c->xdp) 2382 mlx5e_close_xdpsq(&c->rq_xdpsq); 2383 /* The same ICOSQ is used for UMRs for both RQ and XSKRQ. */ 2384 cancel_work_sync(&c->icosq.recover_work); 2385 mlx5e_close_rq(&c->rq); 2386 mlx5e_close_sqs(c); 2387 mlx5e_close_icosq(&c->icosq); 2388 mutex_destroy(&c->icosq_recovery_lock); 2389 mlx5e_close_icosq(&c->async_icosq); 2390 if (c->xdp) 2391 mlx5e_close_cq(&c->rq_xdpsq.cq); 2392 mlx5e_close_cq(&c->rq.cq); 2393 mlx5e_close_cq(&c->xdpsq.cq); 2394 mlx5e_close_tx_cqs(c); 2395 mlx5e_close_cq(&c->icosq.cq); 2396 mlx5e_close_cq(&c->async_icosq.cq); 2397 } 2398 2399 static u8 mlx5e_enumerate_lag_port(struct mlx5_core_dev *mdev, int ix) 2400 { 2401 u16 port_aff_bias = mlx5_core_is_pf(mdev) ? 0 : MLX5_CAP_GEN(mdev, vhca_id); 2402 2403 return (ix + port_aff_bias) % mlx5e_get_num_lag_ports(mdev); 2404 } 2405 2406 static int mlx5e_channel_stats_alloc(struct mlx5e_priv *priv, int ix, int cpu) 2407 { 2408 if (ix > priv->stats_nch) { 2409 netdev_warn(priv->netdev, "Unexpected channel stats index %d > %d\n", ix, 2410 priv->stats_nch); 2411 return -EINVAL; 2412 } 2413 2414 if (priv->channel_stats[ix]) 2415 return 0; 2416 2417 /* Asymmetric dynamic memory allocation. 2418 * Freed in mlx5e_priv_arrays_free, not on channel closure. 2419 */ 2420 netdev_dbg(priv->netdev, "Creating channel stats %d\n", ix); 2421 priv->channel_stats[ix] = kvzalloc_node(sizeof(**priv->channel_stats), 2422 GFP_KERNEL, cpu_to_node(cpu)); 2423 if (!priv->channel_stats[ix]) 2424 return -ENOMEM; 2425 priv->stats_nch++; 2426 2427 return 0; 2428 } 2429 2430 void mlx5e_trigger_napi_icosq(struct mlx5e_channel *c) 2431 { 2432 spin_lock_bh(&c->async_icosq_lock); 2433 mlx5e_trigger_irq(&c->async_icosq); 2434 spin_unlock_bh(&c->async_icosq_lock); 2435 } 2436 2437 void mlx5e_trigger_napi_sched(struct napi_struct *napi) 2438 { 2439 local_bh_disable(); 2440 napi_schedule(napi); 2441 local_bh_enable(); 2442 } 2443 2444 static int mlx5e_open_channel(struct mlx5e_priv *priv, int ix, 2445 struct mlx5e_params *params, 2446 struct mlx5e_channel_param *cparam, 2447 struct xsk_buff_pool *xsk_pool, 2448 struct mlx5e_channel **cp) 2449 { 2450 int cpu = mlx5_comp_vector_get_cpu(priv->mdev, ix); 2451 struct net_device *netdev = priv->netdev; 2452 struct mlx5e_xsk_param xsk; 2453 struct mlx5e_channel *c; 2454 unsigned int irq; 2455 int err; 2456 2457 err = mlx5_comp_irqn_get(priv->mdev, ix, &irq); 2458 if (err) 2459 return err; 2460 2461 err = mlx5e_channel_stats_alloc(priv, ix, cpu); 2462 if (err) 2463 return err; 2464 2465 c = kvzalloc_node(sizeof(*c), GFP_KERNEL, cpu_to_node(cpu)); 2466 if (!c) 2467 return -ENOMEM; 2468 2469 c->priv = priv; 2470 c->mdev = priv->mdev; 2471 c->tstamp = &priv->tstamp; 2472 c->ix = ix; 2473 c->cpu = cpu; 2474 c->pdev = mlx5_core_dma_dev(priv->mdev); 2475 c->netdev = priv->netdev; 2476 c->mkey_be = cpu_to_be32(priv->mdev->mlx5e_res.hw_objs.mkey); 2477 c->num_tc = mlx5e_get_dcb_num_tc(params); 2478 c->xdp = !!params->xdp_prog; 2479 c->stats = &priv->channel_stats[ix]->ch; 2480 c->aff_mask = irq_get_effective_affinity_mask(irq); 2481 c->lag_port = mlx5e_enumerate_lag_port(priv->mdev, ix); 2482 2483 netif_napi_add(netdev, &c->napi, mlx5e_napi_poll); 2484 2485 err = mlx5e_open_queues(c, params, cparam); 2486 if (unlikely(err)) 2487 goto err_napi_del; 2488 2489 if (xsk_pool) { 2490 mlx5e_build_xsk_param(xsk_pool, &xsk); 2491 err = mlx5e_open_xsk(priv, params, &xsk, xsk_pool, c); 2492 if (unlikely(err)) 2493 goto err_close_queues; 2494 } 2495 2496 *cp = c; 2497 2498 return 0; 2499 2500 err_close_queues: 2501 mlx5e_close_queues(c); 2502 2503 err_napi_del: 2504 netif_napi_del(&c->napi); 2505 2506 kvfree(c); 2507 2508 return err; 2509 } 2510 2511 static void mlx5e_activate_channel(struct mlx5e_channel *c) 2512 { 2513 int tc; 2514 2515 napi_enable(&c->napi); 2516 2517 for (tc = 0; tc < c->num_tc; tc++) 2518 mlx5e_activate_txqsq(&c->sq[tc]); 2519 mlx5e_activate_icosq(&c->icosq); 2520 mlx5e_activate_icosq(&c->async_icosq); 2521 2522 if (test_bit(MLX5E_CHANNEL_STATE_XSK, c->state)) 2523 mlx5e_activate_xsk(c); 2524 else 2525 mlx5e_activate_rq(&c->rq); 2526 } 2527 2528 static void mlx5e_deactivate_channel(struct mlx5e_channel *c) 2529 { 2530 int tc; 2531 2532 if (test_bit(MLX5E_CHANNEL_STATE_XSK, c->state)) 2533 mlx5e_deactivate_xsk(c); 2534 else 2535 mlx5e_deactivate_rq(&c->rq); 2536 2537 mlx5e_deactivate_icosq(&c->async_icosq); 2538 mlx5e_deactivate_icosq(&c->icosq); 2539 for (tc = 0; tc < c->num_tc; tc++) 2540 mlx5e_deactivate_txqsq(&c->sq[tc]); 2541 mlx5e_qos_deactivate_queues(c); 2542 2543 napi_disable(&c->napi); 2544 } 2545 2546 static void mlx5e_close_channel(struct mlx5e_channel *c) 2547 { 2548 if (test_bit(MLX5E_CHANNEL_STATE_XSK, c->state)) 2549 mlx5e_close_xsk(c); 2550 mlx5e_close_queues(c); 2551 mlx5e_qos_close_queues(c); 2552 netif_napi_del(&c->napi); 2553 2554 kvfree(c); 2555 } 2556 2557 int mlx5e_open_channels(struct mlx5e_priv *priv, 2558 struct mlx5e_channels *chs) 2559 { 2560 struct mlx5e_channel_param *cparam; 2561 int err = -ENOMEM; 2562 int i; 2563 2564 chs->num = chs->params.num_channels; 2565 2566 chs->c = kcalloc(chs->num, sizeof(struct mlx5e_channel *), GFP_KERNEL); 2567 cparam = kvzalloc(sizeof(struct mlx5e_channel_param), GFP_KERNEL); 2568 if (!chs->c || !cparam) 2569 goto err_free; 2570 2571 err = mlx5e_build_channel_param(priv->mdev, &chs->params, priv->q_counter, cparam); 2572 if (err) 2573 goto err_free; 2574 2575 for (i = 0; i < chs->num; i++) { 2576 struct xsk_buff_pool *xsk_pool = NULL; 2577 2578 if (chs->params.xdp_prog) 2579 xsk_pool = mlx5e_xsk_get_pool(&chs->params, chs->params.xsk, i); 2580 2581 err = mlx5e_open_channel(priv, i, &chs->params, cparam, xsk_pool, &chs->c[i]); 2582 if (err) 2583 goto err_close_channels; 2584 } 2585 2586 if (MLX5E_GET_PFLAG(&chs->params, MLX5E_PFLAG_TX_PORT_TS) || chs->params.ptp_rx) { 2587 err = mlx5e_ptp_open(priv, &chs->params, chs->c[0]->lag_port, &chs->ptp); 2588 if (err) 2589 goto err_close_channels; 2590 } 2591 2592 if (priv->htb) { 2593 err = mlx5e_qos_open_queues(priv, chs); 2594 if (err) 2595 goto err_close_ptp; 2596 } 2597 2598 mlx5e_health_channels_update(priv); 2599 kvfree(cparam); 2600 return 0; 2601 2602 err_close_ptp: 2603 if (chs->ptp) 2604 mlx5e_ptp_close(chs->ptp); 2605 2606 err_close_channels: 2607 for (i--; i >= 0; i--) 2608 mlx5e_close_channel(chs->c[i]); 2609 2610 err_free: 2611 kfree(chs->c); 2612 kvfree(cparam); 2613 chs->num = 0; 2614 return err; 2615 } 2616 2617 static void mlx5e_activate_channels(struct mlx5e_priv *priv, struct mlx5e_channels *chs) 2618 { 2619 int i; 2620 2621 for (i = 0; i < chs->num; i++) 2622 mlx5e_activate_channel(chs->c[i]); 2623 2624 if (priv->htb) 2625 mlx5e_qos_activate_queues(priv); 2626 2627 for (i = 0; i < chs->num; i++) 2628 mlx5e_trigger_napi_icosq(chs->c[i]); 2629 2630 if (chs->ptp) 2631 mlx5e_ptp_activate_channel(chs->ptp); 2632 } 2633 2634 static int mlx5e_wait_channels_min_rx_wqes(struct mlx5e_channels *chs) 2635 { 2636 int err = 0; 2637 int i; 2638 2639 for (i = 0; i < chs->num; i++) { 2640 int timeout = err ? 0 : MLX5E_RQ_WQES_TIMEOUT; 2641 struct mlx5e_channel *c = chs->c[i]; 2642 2643 if (test_bit(MLX5E_CHANNEL_STATE_XSK, c->state)) 2644 continue; 2645 2646 err |= mlx5e_wait_for_min_rx_wqes(&c->rq, timeout); 2647 2648 /* Don't wait on the XSK RQ, because the newer xdpsock sample 2649 * doesn't provide any Fill Ring entries at the setup stage. 2650 */ 2651 } 2652 2653 return err ? -ETIMEDOUT : 0; 2654 } 2655 2656 static void mlx5e_deactivate_channels(struct mlx5e_channels *chs) 2657 { 2658 int i; 2659 2660 if (chs->ptp) 2661 mlx5e_ptp_deactivate_channel(chs->ptp); 2662 2663 for (i = 0; i < chs->num; i++) 2664 mlx5e_deactivate_channel(chs->c[i]); 2665 } 2666 2667 void mlx5e_close_channels(struct mlx5e_channels *chs) 2668 { 2669 int i; 2670 2671 ASSERT_RTNL(); 2672 if (chs->ptp) { 2673 mlx5e_ptp_close(chs->ptp); 2674 chs->ptp = NULL; 2675 } 2676 for (i = 0; i < chs->num; i++) 2677 mlx5e_close_channel(chs->c[i]); 2678 2679 kfree(chs->c); 2680 chs->num = 0; 2681 } 2682 2683 static int mlx5e_modify_tirs_packet_merge(struct mlx5e_priv *priv) 2684 { 2685 struct mlx5e_rx_res *res = priv->rx_res; 2686 2687 return mlx5e_rx_res_packet_merge_set_param(res, &priv->channels.params.packet_merge); 2688 } 2689 2690 static MLX5E_DEFINE_PREACTIVATE_WRAPPER_CTX(mlx5e_modify_tirs_packet_merge); 2691 2692 static int mlx5e_set_mtu(struct mlx5_core_dev *mdev, 2693 struct mlx5e_params *params, u16 mtu) 2694 { 2695 u16 hw_mtu = MLX5E_SW2HW_MTU(params, mtu); 2696 int err; 2697 2698 err = mlx5_set_port_mtu(mdev, hw_mtu, 1); 2699 if (err) 2700 return err; 2701 2702 /* Update vport context MTU */ 2703 mlx5_modify_nic_vport_mtu(mdev, hw_mtu); 2704 return 0; 2705 } 2706 2707 static void mlx5e_query_mtu(struct mlx5_core_dev *mdev, 2708 struct mlx5e_params *params, u16 *mtu) 2709 { 2710 u16 hw_mtu = 0; 2711 int err; 2712 2713 err = mlx5_query_nic_vport_mtu(mdev, &hw_mtu); 2714 if (err || !hw_mtu) /* fallback to port oper mtu */ 2715 mlx5_query_port_oper_mtu(mdev, &hw_mtu, 1); 2716 2717 *mtu = MLX5E_HW2SW_MTU(params, hw_mtu); 2718 } 2719 2720 int mlx5e_set_dev_port_mtu(struct mlx5e_priv *priv) 2721 { 2722 struct mlx5e_params *params = &priv->channels.params; 2723 struct net_device *netdev = priv->netdev; 2724 struct mlx5_core_dev *mdev = priv->mdev; 2725 u16 mtu; 2726 int err; 2727 2728 err = mlx5e_set_mtu(mdev, params, params->sw_mtu); 2729 if (err) 2730 return err; 2731 2732 mlx5e_query_mtu(mdev, params, &mtu); 2733 if (mtu != params->sw_mtu) 2734 netdev_warn(netdev, "%s: VPort MTU %d is different than netdev mtu %d\n", 2735 __func__, mtu, params->sw_mtu); 2736 2737 params->sw_mtu = mtu; 2738 return 0; 2739 } 2740 2741 MLX5E_DEFINE_PREACTIVATE_WRAPPER_CTX(mlx5e_set_dev_port_mtu); 2742 2743 void mlx5e_set_netdev_mtu_boundaries(struct mlx5e_priv *priv) 2744 { 2745 struct mlx5e_params *params = &priv->channels.params; 2746 struct net_device *netdev = priv->netdev; 2747 struct mlx5_core_dev *mdev = priv->mdev; 2748 u16 max_mtu; 2749 2750 /* MTU range: 68 - hw-specific max */ 2751 netdev->min_mtu = ETH_MIN_MTU; 2752 2753 mlx5_query_port_max_mtu(mdev, &max_mtu, 1); 2754 netdev->max_mtu = min_t(unsigned int, MLX5E_HW2SW_MTU(params, max_mtu), 2755 ETH_MAX_MTU); 2756 } 2757 2758 static int mlx5e_netdev_set_tcs(struct net_device *netdev, u16 nch, u8 ntc, 2759 struct netdev_tc_txq *tc_to_txq) 2760 { 2761 int tc, err; 2762 2763 netdev_reset_tc(netdev); 2764 2765 if (ntc == 1) 2766 return 0; 2767 2768 err = netdev_set_num_tc(netdev, ntc); 2769 if (err) { 2770 netdev_WARN(netdev, "netdev_set_num_tc failed (%d), ntc = %d\n", err, ntc); 2771 return err; 2772 } 2773 2774 for (tc = 0; tc < ntc; tc++) { 2775 u16 count, offset; 2776 2777 count = tc_to_txq[tc].count; 2778 offset = tc_to_txq[tc].offset; 2779 netdev_set_tc_queue(netdev, tc, count, offset); 2780 } 2781 2782 return 0; 2783 } 2784 2785 int mlx5e_update_tx_netdev_queues(struct mlx5e_priv *priv) 2786 { 2787 int nch, ntc, num_txqs, err; 2788 int qos_queues = 0; 2789 2790 if (priv->htb) 2791 qos_queues = mlx5e_htb_cur_leaf_nodes(priv->htb); 2792 2793 nch = priv->channels.params.num_channels; 2794 ntc = mlx5e_get_dcb_num_tc(&priv->channels.params); 2795 num_txqs = nch * ntc + qos_queues; 2796 if (MLX5E_GET_PFLAG(&priv->channels.params, MLX5E_PFLAG_TX_PORT_TS)) 2797 num_txqs += ntc; 2798 2799 netdev_dbg(priv->netdev, "Setting num_txqs %d\n", num_txqs); 2800 err = netif_set_real_num_tx_queues(priv->netdev, num_txqs); 2801 if (err) 2802 netdev_warn(priv->netdev, "netif_set_real_num_tx_queues failed, %d\n", err); 2803 2804 return err; 2805 } 2806 2807 static int mlx5e_update_netdev_queues(struct mlx5e_priv *priv) 2808 { 2809 struct netdev_tc_txq old_tc_to_txq[TC_MAX_QUEUE], *tc_to_txq; 2810 struct net_device *netdev = priv->netdev; 2811 int old_num_txqs, old_ntc; 2812 int nch, ntc; 2813 int err; 2814 int i; 2815 2816 old_num_txqs = netdev->real_num_tx_queues; 2817 old_ntc = netdev->num_tc ? : 1; 2818 for (i = 0; i < ARRAY_SIZE(old_tc_to_txq); i++) 2819 old_tc_to_txq[i] = netdev->tc_to_txq[i]; 2820 2821 nch = priv->channels.params.num_channels; 2822 ntc = priv->channels.params.mqprio.num_tc; 2823 tc_to_txq = priv->channels.params.mqprio.tc_to_txq; 2824 2825 err = mlx5e_netdev_set_tcs(netdev, nch, ntc, tc_to_txq); 2826 if (err) 2827 goto err_out; 2828 err = mlx5e_update_tx_netdev_queues(priv); 2829 if (err) 2830 goto err_tcs; 2831 err = netif_set_real_num_rx_queues(netdev, nch); 2832 if (err) { 2833 netdev_warn(netdev, "netif_set_real_num_rx_queues failed, %d\n", err); 2834 goto err_txqs; 2835 } 2836 2837 return 0; 2838 2839 err_txqs: 2840 /* netif_set_real_num_rx_queues could fail only when nch increased. Only 2841 * one of nch and ntc is changed in this function. That means, the call 2842 * to netif_set_real_num_tx_queues below should not fail, because it 2843 * decreases the number of TX queues. 2844 */ 2845 WARN_ON_ONCE(netif_set_real_num_tx_queues(netdev, old_num_txqs)); 2846 2847 err_tcs: 2848 WARN_ON_ONCE(mlx5e_netdev_set_tcs(netdev, old_num_txqs / old_ntc, old_ntc, 2849 old_tc_to_txq)); 2850 err_out: 2851 return err; 2852 } 2853 2854 static MLX5E_DEFINE_PREACTIVATE_WRAPPER_CTX(mlx5e_update_netdev_queues); 2855 2856 static void mlx5e_set_default_xps_cpumasks(struct mlx5e_priv *priv, 2857 struct mlx5e_params *params) 2858 { 2859 struct mlx5_core_dev *mdev = priv->mdev; 2860 int num_comp_vectors, ix, irq; 2861 2862 num_comp_vectors = mlx5_comp_vectors_max(mdev); 2863 2864 for (ix = 0; ix < params->num_channels; ix++) { 2865 cpumask_clear(priv->scratchpad.cpumask); 2866 2867 for (irq = ix; irq < num_comp_vectors; irq += params->num_channels) { 2868 int cpu = mlx5_comp_vector_get_cpu(mdev, irq); 2869 2870 cpumask_set_cpu(cpu, priv->scratchpad.cpumask); 2871 } 2872 2873 netif_set_xps_queue(priv->netdev, priv->scratchpad.cpumask, ix); 2874 } 2875 } 2876 2877 static int mlx5e_num_channels_changed(struct mlx5e_priv *priv) 2878 { 2879 u16 count = priv->channels.params.num_channels; 2880 int err; 2881 2882 err = mlx5e_update_netdev_queues(priv); 2883 if (err) 2884 return err; 2885 2886 mlx5e_set_default_xps_cpumasks(priv, &priv->channels.params); 2887 2888 /* This function may be called on attach, before priv->rx_res is created. */ 2889 if (!netif_is_rxfh_configured(priv->netdev) && priv->rx_res) 2890 mlx5e_rx_res_rss_set_indir_uniform(priv->rx_res, count); 2891 2892 return 0; 2893 } 2894 2895 MLX5E_DEFINE_PREACTIVATE_WRAPPER_CTX(mlx5e_num_channels_changed); 2896 2897 static void mlx5e_build_txq_maps(struct mlx5e_priv *priv) 2898 { 2899 int i, ch, tc, num_tc; 2900 2901 ch = priv->channels.num; 2902 num_tc = mlx5e_get_dcb_num_tc(&priv->channels.params); 2903 2904 for (i = 0; i < ch; i++) { 2905 for (tc = 0; tc < num_tc; tc++) { 2906 struct mlx5e_channel *c = priv->channels.c[i]; 2907 struct mlx5e_txqsq *sq = &c->sq[tc]; 2908 2909 priv->txq2sq[sq->txq_ix] = sq; 2910 } 2911 } 2912 2913 if (!priv->channels.ptp) 2914 goto out; 2915 2916 if (!test_bit(MLX5E_PTP_STATE_TX, priv->channels.ptp->state)) 2917 goto out; 2918 2919 for (tc = 0; tc < num_tc; tc++) { 2920 struct mlx5e_ptp *c = priv->channels.ptp; 2921 struct mlx5e_txqsq *sq = &c->ptpsq[tc].txqsq; 2922 2923 priv->txq2sq[sq->txq_ix] = sq; 2924 } 2925 2926 out: 2927 /* Make the change to txq2sq visible before the queue is started. 2928 * As mlx5e_xmit runs under a spinlock, there is an implicit ACQUIRE, 2929 * which pairs with this barrier. 2930 */ 2931 smp_wmb(); 2932 } 2933 2934 void mlx5e_activate_priv_channels(struct mlx5e_priv *priv) 2935 { 2936 mlx5e_build_txq_maps(priv); 2937 mlx5e_activate_channels(priv, &priv->channels); 2938 mlx5e_xdp_tx_enable(priv); 2939 2940 /* dev_watchdog() wants all TX queues to be started when the carrier is 2941 * OK, including the ones in range real_num_tx_queues..num_tx_queues-1. 2942 * Make it happy to avoid TX timeout false alarms. 2943 */ 2944 netif_tx_start_all_queues(priv->netdev); 2945 2946 if (mlx5e_is_vport_rep(priv)) 2947 mlx5e_rep_activate_channels(priv); 2948 2949 set_bit(MLX5E_STATE_CHANNELS_ACTIVE, &priv->state); 2950 2951 mlx5e_wait_channels_min_rx_wqes(&priv->channels); 2952 2953 if (priv->rx_res) 2954 mlx5e_rx_res_channels_activate(priv->rx_res, &priv->channels); 2955 } 2956 2957 static void mlx5e_cancel_tx_timeout_work(struct mlx5e_priv *priv) 2958 { 2959 WARN_ON_ONCE(test_bit(MLX5E_STATE_CHANNELS_ACTIVE, &priv->state)); 2960 if (current_work() != &priv->tx_timeout_work) 2961 cancel_work_sync(&priv->tx_timeout_work); 2962 } 2963 2964 void mlx5e_deactivate_priv_channels(struct mlx5e_priv *priv) 2965 { 2966 if (priv->rx_res) 2967 mlx5e_rx_res_channels_deactivate(priv->rx_res); 2968 2969 clear_bit(MLX5E_STATE_CHANNELS_ACTIVE, &priv->state); 2970 mlx5e_cancel_tx_timeout_work(priv); 2971 2972 if (mlx5e_is_vport_rep(priv)) 2973 mlx5e_rep_deactivate_channels(priv); 2974 2975 /* The results of ndo_select_queue are unreliable, while netdev config 2976 * is being changed (real_num_tx_queues, num_tc). Stop all queues to 2977 * prevent ndo_start_xmit from being called, so that it can assume that 2978 * the selected queue is always valid. 2979 */ 2980 netif_tx_disable(priv->netdev); 2981 2982 mlx5e_xdp_tx_disable(priv); 2983 mlx5e_deactivate_channels(&priv->channels); 2984 } 2985 2986 static int mlx5e_switch_priv_params(struct mlx5e_priv *priv, 2987 struct mlx5e_params *new_params, 2988 mlx5e_fp_preactivate preactivate, 2989 void *context) 2990 { 2991 struct mlx5e_params old_params; 2992 2993 old_params = priv->channels.params; 2994 priv->channels.params = *new_params; 2995 2996 if (preactivate) { 2997 int err; 2998 2999 err = preactivate(priv, context); 3000 if (err) { 3001 priv->channels.params = old_params; 3002 return err; 3003 } 3004 } 3005 3006 return 0; 3007 } 3008 3009 static int mlx5e_switch_priv_channels(struct mlx5e_priv *priv, 3010 struct mlx5e_channels *new_chs, 3011 mlx5e_fp_preactivate preactivate, 3012 void *context) 3013 { 3014 struct net_device *netdev = priv->netdev; 3015 struct mlx5e_channels old_chs; 3016 int carrier_ok; 3017 int err = 0; 3018 3019 carrier_ok = netif_carrier_ok(netdev); 3020 netif_carrier_off(netdev); 3021 3022 mlx5e_deactivate_priv_channels(priv); 3023 3024 old_chs = priv->channels; 3025 priv->channels = *new_chs; 3026 3027 /* New channels are ready to roll, call the preactivate hook if needed 3028 * to modify HW settings or update kernel parameters. 3029 */ 3030 if (preactivate) { 3031 err = preactivate(priv, context); 3032 if (err) { 3033 priv->channels = old_chs; 3034 goto out; 3035 } 3036 } 3037 3038 mlx5e_close_channels(&old_chs); 3039 priv->profile->update_rx(priv); 3040 3041 mlx5e_selq_apply(&priv->selq); 3042 out: 3043 mlx5e_activate_priv_channels(priv); 3044 3045 /* return carrier back if needed */ 3046 if (carrier_ok) 3047 netif_carrier_on(netdev); 3048 3049 return err; 3050 } 3051 3052 int mlx5e_safe_switch_params(struct mlx5e_priv *priv, 3053 struct mlx5e_params *params, 3054 mlx5e_fp_preactivate preactivate, 3055 void *context, bool reset) 3056 { 3057 struct mlx5e_channels *new_chs; 3058 int err; 3059 3060 reset &= test_bit(MLX5E_STATE_OPENED, &priv->state); 3061 if (!reset) 3062 return mlx5e_switch_priv_params(priv, params, preactivate, context); 3063 3064 new_chs = kzalloc(sizeof(*new_chs), GFP_KERNEL); 3065 if (!new_chs) 3066 return -ENOMEM; 3067 new_chs->params = *params; 3068 3069 mlx5e_selq_prepare_params(&priv->selq, &new_chs->params); 3070 3071 err = mlx5e_open_channels(priv, new_chs); 3072 if (err) 3073 goto err_cancel_selq; 3074 3075 err = mlx5e_switch_priv_channels(priv, new_chs, preactivate, context); 3076 if (err) 3077 goto err_close; 3078 3079 kfree(new_chs); 3080 return 0; 3081 3082 err_close: 3083 mlx5e_close_channels(new_chs); 3084 3085 err_cancel_selq: 3086 mlx5e_selq_cancel(&priv->selq); 3087 kfree(new_chs); 3088 return err; 3089 } 3090 3091 int mlx5e_safe_reopen_channels(struct mlx5e_priv *priv) 3092 { 3093 return mlx5e_safe_switch_params(priv, &priv->channels.params, NULL, NULL, true); 3094 } 3095 3096 void mlx5e_timestamp_init(struct mlx5e_priv *priv) 3097 { 3098 priv->tstamp.tx_type = HWTSTAMP_TX_OFF; 3099 priv->tstamp.rx_filter = HWTSTAMP_FILTER_NONE; 3100 } 3101 3102 static void mlx5e_modify_admin_state(struct mlx5_core_dev *mdev, 3103 enum mlx5_port_status state) 3104 { 3105 struct mlx5_eswitch *esw = mdev->priv.eswitch; 3106 int vport_admin_state; 3107 3108 mlx5_set_port_admin_status(mdev, state); 3109 3110 if (mlx5_eswitch_mode(mdev) == MLX5_ESWITCH_OFFLOADS || 3111 !MLX5_CAP_GEN(mdev, uplink_follow)) 3112 return; 3113 3114 if (state == MLX5_PORT_UP) 3115 vport_admin_state = MLX5_VPORT_ADMIN_STATE_AUTO; 3116 else 3117 vport_admin_state = MLX5_VPORT_ADMIN_STATE_DOWN; 3118 3119 mlx5_eswitch_set_vport_state(esw, MLX5_VPORT_UPLINK, vport_admin_state); 3120 } 3121 3122 int mlx5e_open_locked(struct net_device *netdev) 3123 { 3124 struct mlx5e_priv *priv = netdev_priv(netdev); 3125 int err; 3126 3127 mlx5e_selq_prepare_params(&priv->selq, &priv->channels.params); 3128 3129 set_bit(MLX5E_STATE_OPENED, &priv->state); 3130 3131 err = mlx5e_open_channels(priv, &priv->channels); 3132 if (err) 3133 goto err_clear_state_opened_flag; 3134 3135 err = priv->profile->update_rx(priv); 3136 if (err) 3137 goto err_close_channels; 3138 3139 mlx5e_selq_apply(&priv->selq); 3140 mlx5e_activate_priv_channels(priv); 3141 mlx5e_apply_traps(priv, true); 3142 if (priv->profile->update_carrier) 3143 priv->profile->update_carrier(priv); 3144 3145 mlx5e_queue_update_stats(priv); 3146 return 0; 3147 3148 err_close_channels: 3149 mlx5e_close_channels(&priv->channels); 3150 err_clear_state_opened_flag: 3151 clear_bit(MLX5E_STATE_OPENED, &priv->state); 3152 mlx5e_selq_cancel(&priv->selq); 3153 return err; 3154 } 3155 3156 int mlx5e_open(struct net_device *netdev) 3157 { 3158 struct mlx5e_priv *priv = netdev_priv(netdev); 3159 int err; 3160 3161 mutex_lock(&priv->state_lock); 3162 err = mlx5e_open_locked(netdev); 3163 if (!err) 3164 mlx5e_modify_admin_state(priv->mdev, MLX5_PORT_UP); 3165 mutex_unlock(&priv->state_lock); 3166 3167 return err; 3168 } 3169 3170 int mlx5e_close_locked(struct net_device *netdev) 3171 { 3172 struct mlx5e_priv *priv = netdev_priv(netdev); 3173 3174 /* May already be CLOSED in case a previous configuration operation 3175 * (e.g RX/TX queue size change) that involves close&open failed. 3176 */ 3177 if (!test_bit(MLX5E_STATE_OPENED, &priv->state)) 3178 return 0; 3179 3180 mlx5e_apply_traps(priv, false); 3181 clear_bit(MLX5E_STATE_OPENED, &priv->state); 3182 3183 netif_carrier_off(priv->netdev); 3184 mlx5e_deactivate_priv_channels(priv); 3185 mlx5e_close_channels(&priv->channels); 3186 3187 return 0; 3188 } 3189 3190 int mlx5e_close(struct net_device *netdev) 3191 { 3192 struct mlx5e_priv *priv = netdev_priv(netdev); 3193 int err; 3194 3195 if (!netif_device_present(netdev)) 3196 return -ENODEV; 3197 3198 mutex_lock(&priv->state_lock); 3199 mlx5e_modify_admin_state(priv->mdev, MLX5_PORT_DOWN); 3200 err = mlx5e_close_locked(netdev); 3201 mutex_unlock(&priv->state_lock); 3202 3203 return err; 3204 } 3205 3206 static void mlx5e_free_drop_rq(struct mlx5e_rq *rq) 3207 { 3208 mlx5_wq_destroy(&rq->wq_ctrl); 3209 } 3210 3211 static int mlx5e_alloc_drop_rq(struct mlx5_core_dev *mdev, 3212 struct mlx5e_rq *rq, 3213 struct mlx5e_rq_param *param) 3214 { 3215 void *rqc = param->rqc; 3216 void *rqc_wq = MLX5_ADDR_OF(rqc, rqc, wq); 3217 int err; 3218 3219 param->wq.db_numa_node = param->wq.buf_numa_node; 3220 3221 err = mlx5_wq_cyc_create(mdev, ¶m->wq, rqc_wq, &rq->wqe.wq, 3222 &rq->wq_ctrl); 3223 if (err) 3224 return err; 3225 3226 /* Mark as unused given "Drop-RQ" packets never reach XDP */ 3227 xdp_rxq_info_unused(&rq->xdp_rxq); 3228 3229 rq->mdev = mdev; 3230 3231 return 0; 3232 } 3233 3234 static int mlx5e_alloc_drop_cq(struct mlx5e_priv *priv, 3235 struct mlx5e_cq *cq, 3236 struct mlx5e_cq_param *param) 3237 { 3238 struct mlx5_core_dev *mdev = priv->mdev; 3239 3240 param->wq.buf_numa_node = dev_to_node(mlx5_core_dma_dev(mdev)); 3241 param->wq.db_numa_node = dev_to_node(mlx5_core_dma_dev(mdev)); 3242 3243 return mlx5e_alloc_cq_common(priv, param, cq); 3244 } 3245 3246 int mlx5e_open_drop_rq(struct mlx5e_priv *priv, 3247 struct mlx5e_rq *drop_rq) 3248 { 3249 struct mlx5_core_dev *mdev = priv->mdev; 3250 struct mlx5e_cq_param cq_param = {}; 3251 struct mlx5e_rq_param rq_param = {}; 3252 struct mlx5e_cq *cq = &drop_rq->cq; 3253 int err; 3254 3255 mlx5e_build_drop_rq_param(mdev, priv->drop_rq_q_counter, &rq_param); 3256 3257 err = mlx5e_alloc_drop_cq(priv, cq, &cq_param); 3258 if (err) 3259 return err; 3260 3261 err = mlx5e_create_cq(cq, &cq_param); 3262 if (err) 3263 goto err_free_cq; 3264 3265 err = mlx5e_alloc_drop_rq(mdev, drop_rq, &rq_param); 3266 if (err) 3267 goto err_destroy_cq; 3268 3269 err = mlx5e_create_rq(drop_rq, &rq_param); 3270 if (err) 3271 goto err_free_rq; 3272 3273 err = mlx5e_modify_rq_state(drop_rq, MLX5_RQC_STATE_RST, MLX5_RQC_STATE_RDY); 3274 if (err) 3275 mlx5_core_warn(priv->mdev, "modify_rq_state failed, rx_if_down_packets won't be counted %d\n", err); 3276 3277 return 0; 3278 3279 err_free_rq: 3280 mlx5e_free_drop_rq(drop_rq); 3281 3282 err_destroy_cq: 3283 mlx5e_destroy_cq(cq); 3284 3285 err_free_cq: 3286 mlx5e_free_cq(cq); 3287 3288 return err; 3289 } 3290 3291 void mlx5e_close_drop_rq(struct mlx5e_rq *drop_rq) 3292 { 3293 mlx5e_destroy_rq(drop_rq); 3294 mlx5e_free_drop_rq(drop_rq); 3295 mlx5e_destroy_cq(&drop_rq->cq); 3296 mlx5e_free_cq(&drop_rq->cq); 3297 } 3298 3299 int mlx5e_create_tis(struct mlx5_core_dev *mdev, void *in, u32 *tisn) 3300 { 3301 void *tisc = MLX5_ADDR_OF(create_tis_in, in, ctx); 3302 3303 MLX5_SET(tisc, tisc, transport_domain, mdev->mlx5e_res.hw_objs.td.tdn); 3304 3305 if (MLX5_GET(tisc, tisc, tls_en)) 3306 MLX5_SET(tisc, tisc, pd, mdev->mlx5e_res.hw_objs.pdn); 3307 3308 if (mlx5_lag_is_lacp_owner(mdev)) 3309 MLX5_SET(tisc, tisc, strict_lag_tx_port_affinity, 1); 3310 3311 return mlx5_core_create_tis(mdev, in, tisn); 3312 } 3313 3314 void mlx5e_destroy_tis(struct mlx5_core_dev *mdev, u32 tisn) 3315 { 3316 mlx5_core_destroy_tis(mdev, tisn); 3317 } 3318 3319 void mlx5e_destroy_tises(struct mlx5e_priv *priv) 3320 { 3321 int tc, i; 3322 3323 for (i = 0; i < mlx5e_get_num_lag_ports(priv->mdev); i++) 3324 for (tc = 0; tc < priv->profile->max_tc; tc++) 3325 mlx5e_destroy_tis(priv->mdev, priv->tisn[i][tc]); 3326 } 3327 3328 static bool mlx5e_lag_should_assign_affinity(struct mlx5_core_dev *mdev) 3329 { 3330 return MLX5_CAP_GEN(mdev, lag_tx_port_affinity) && mlx5e_get_num_lag_ports(mdev) > 1; 3331 } 3332 3333 int mlx5e_create_tises(struct mlx5e_priv *priv) 3334 { 3335 int tc, i; 3336 int err; 3337 3338 for (i = 0; i < mlx5e_get_num_lag_ports(priv->mdev); i++) { 3339 for (tc = 0; tc < priv->profile->max_tc; tc++) { 3340 u32 in[MLX5_ST_SZ_DW(create_tis_in)] = {}; 3341 void *tisc; 3342 3343 tisc = MLX5_ADDR_OF(create_tis_in, in, ctx); 3344 3345 MLX5_SET(tisc, tisc, prio, tc << 1); 3346 3347 if (mlx5e_lag_should_assign_affinity(priv->mdev)) 3348 MLX5_SET(tisc, tisc, lag_tx_port_affinity, i + 1); 3349 3350 err = mlx5e_create_tis(priv->mdev, in, &priv->tisn[i][tc]); 3351 if (err) 3352 goto err_close_tises; 3353 } 3354 } 3355 3356 return 0; 3357 3358 err_close_tises: 3359 for (; i >= 0; i--) { 3360 for (tc--; tc >= 0; tc--) 3361 mlx5e_destroy_tis(priv->mdev, priv->tisn[i][tc]); 3362 tc = priv->profile->max_tc; 3363 } 3364 3365 return err; 3366 } 3367 3368 static void mlx5e_cleanup_nic_tx(struct mlx5e_priv *priv) 3369 { 3370 if (priv->mqprio_rl) { 3371 mlx5e_mqprio_rl_cleanup(priv->mqprio_rl); 3372 mlx5e_mqprio_rl_free(priv->mqprio_rl); 3373 priv->mqprio_rl = NULL; 3374 } 3375 mlx5e_accel_cleanup_tx(priv); 3376 mlx5e_destroy_tises(priv); 3377 } 3378 3379 static int mlx5e_modify_channels_vsd(struct mlx5e_channels *chs, bool vsd) 3380 { 3381 int err; 3382 int i; 3383 3384 for (i = 0; i < chs->num; i++) { 3385 err = mlx5e_modify_rq_vsd(&chs->c[i]->rq, vsd); 3386 if (err) 3387 return err; 3388 } 3389 if (chs->ptp && test_bit(MLX5E_PTP_STATE_RX, chs->ptp->state)) 3390 return mlx5e_modify_rq_vsd(&chs->ptp->rq, vsd); 3391 3392 return 0; 3393 } 3394 3395 static void mlx5e_mqprio_build_default_tc_to_txq(struct netdev_tc_txq *tc_to_txq, 3396 int ntc, int nch) 3397 { 3398 int tc; 3399 3400 memset(tc_to_txq, 0, sizeof(*tc_to_txq) * TC_MAX_QUEUE); 3401 3402 /* Map netdev TCs to offset 0. 3403 * We have our own UP to TXQ mapping for DCB mode of QoS 3404 */ 3405 for (tc = 0; tc < ntc; tc++) { 3406 tc_to_txq[tc] = (struct netdev_tc_txq) { 3407 .count = nch, 3408 .offset = 0, 3409 }; 3410 } 3411 } 3412 3413 static void mlx5e_mqprio_build_tc_to_txq(struct netdev_tc_txq *tc_to_txq, 3414 struct tc_mqprio_qopt *qopt) 3415 { 3416 int tc; 3417 3418 for (tc = 0; tc < TC_MAX_QUEUE; tc++) { 3419 tc_to_txq[tc] = (struct netdev_tc_txq) { 3420 .count = qopt->count[tc], 3421 .offset = qopt->offset[tc], 3422 }; 3423 } 3424 } 3425 3426 static void mlx5e_params_mqprio_dcb_set(struct mlx5e_params *params, u8 num_tc) 3427 { 3428 params->mqprio.mode = TC_MQPRIO_MODE_DCB; 3429 params->mqprio.num_tc = num_tc; 3430 mlx5e_mqprio_build_default_tc_to_txq(params->mqprio.tc_to_txq, num_tc, 3431 params->num_channels); 3432 } 3433 3434 static void mlx5e_mqprio_rl_update_params(struct mlx5e_params *params, 3435 struct mlx5e_mqprio_rl *rl) 3436 { 3437 int tc; 3438 3439 for (tc = 0; tc < TC_MAX_QUEUE; tc++) { 3440 u32 hw_id = 0; 3441 3442 if (rl) 3443 mlx5e_mqprio_rl_get_node_hw_id(rl, tc, &hw_id); 3444 params->mqprio.channel.hw_id[tc] = hw_id; 3445 } 3446 } 3447 3448 static void mlx5e_params_mqprio_channel_set(struct mlx5e_params *params, 3449 struct tc_mqprio_qopt_offload *mqprio, 3450 struct mlx5e_mqprio_rl *rl) 3451 { 3452 int tc; 3453 3454 params->mqprio.mode = TC_MQPRIO_MODE_CHANNEL; 3455 params->mqprio.num_tc = mqprio->qopt.num_tc; 3456 3457 for (tc = 0; tc < TC_MAX_QUEUE; tc++) 3458 params->mqprio.channel.max_rate[tc] = mqprio->max_rate[tc]; 3459 3460 mlx5e_mqprio_rl_update_params(params, rl); 3461 mlx5e_mqprio_build_tc_to_txq(params->mqprio.tc_to_txq, &mqprio->qopt); 3462 } 3463 3464 static void mlx5e_params_mqprio_reset(struct mlx5e_params *params) 3465 { 3466 mlx5e_params_mqprio_dcb_set(params, 1); 3467 } 3468 3469 static int mlx5e_setup_tc_mqprio_dcb(struct mlx5e_priv *priv, 3470 struct tc_mqprio_qopt *mqprio) 3471 { 3472 struct mlx5e_params new_params; 3473 u8 tc = mqprio->num_tc; 3474 int err; 3475 3476 mqprio->hw = TC_MQPRIO_HW_OFFLOAD_TCS; 3477 3478 if (tc && tc != MLX5E_MAX_NUM_TC) 3479 return -EINVAL; 3480 3481 new_params = priv->channels.params; 3482 mlx5e_params_mqprio_dcb_set(&new_params, tc ? tc : 1); 3483 3484 err = mlx5e_safe_switch_params(priv, &new_params, 3485 mlx5e_num_channels_changed_ctx, NULL, true); 3486 3487 if (!err && priv->mqprio_rl) { 3488 mlx5e_mqprio_rl_cleanup(priv->mqprio_rl); 3489 mlx5e_mqprio_rl_free(priv->mqprio_rl); 3490 priv->mqprio_rl = NULL; 3491 } 3492 3493 priv->max_opened_tc = max_t(u8, priv->max_opened_tc, 3494 mlx5e_get_dcb_num_tc(&priv->channels.params)); 3495 return err; 3496 } 3497 3498 static int mlx5e_mqprio_channel_validate(struct mlx5e_priv *priv, 3499 struct tc_mqprio_qopt_offload *mqprio) 3500 { 3501 struct net_device *netdev = priv->netdev; 3502 struct mlx5e_ptp *ptp_channel; 3503 int agg_count = 0; 3504 int i; 3505 3506 ptp_channel = priv->channels.ptp; 3507 if (ptp_channel && test_bit(MLX5E_PTP_STATE_TX, ptp_channel->state)) { 3508 netdev_err(netdev, 3509 "Cannot activate MQPRIO mode channel since it conflicts with TX port TS\n"); 3510 return -EINVAL; 3511 } 3512 3513 if (mqprio->qopt.offset[0] != 0 || mqprio->qopt.num_tc < 1 || 3514 mqprio->qopt.num_tc > MLX5E_MAX_NUM_MQPRIO_CH_TC) 3515 return -EINVAL; 3516 3517 for (i = 0; i < mqprio->qopt.num_tc; i++) { 3518 if (!mqprio->qopt.count[i]) { 3519 netdev_err(netdev, "Zero size for queue-group (%d) is not supported\n", i); 3520 return -EINVAL; 3521 } 3522 if (mqprio->min_rate[i]) { 3523 netdev_err(netdev, "Min tx rate is not supported\n"); 3524 return -EINVAL; 3525 } 3526 3527 if (mqprio->max_rate[i]) { 3528 int err; 3529 3530 err = mlx5e_qos_bytes_rate_check(priv->mdev, mqprio->max_rate[i]); 3531 if (err) 3532 return err; 3533 } 3534 3535 if (mqprio->qopt.offset[i] != agg_count) { 3536 netdev_err(netdev, "Discontinuous queues config is not supported\n"); 3537 return -EINVAL; 3538 } 3539 agg_count += mqprio->qopt.count[i]; 3540 } 3541 3542 if (priv->channels.params.num_channels != agg_count) { 3543 netdev_err(netdev, "Num of queues (%d) does not match available (%d)\n", 3544 agg_count, priv->channels.params.num_channels); 3545 return -EINVAL; 3546 } 3547 3548 return 0; 3549 } 3550 3551 static bool mlx5e_mqprio_rate_limit(u8 num_tc, u64 max_rate[]) 3552 { 3553 int tc; 3554 3555 for (tc = 0; tc < num_tc; tc++) 3556 if (max_rate[tc]) 3557 return true; 3558 return false; 3559 } 3560 3561 static struct mlx5e_mqprio_rl *mlx5e_mqprio_rl_create(struct mlx5_core_dev *mdev, 3562 u8 num_tc, u64 max_rate[]) 3563 { 3564 struct mlx5e_mqprio_rl *rl; 3565 int err; 3566 3567 if (!mlx5e_mqprio_rate_limit(num_tc, max_rate)) 3568 return NULL; 3569 3570 rl = mlx5e_mqprio_rl_alloc(); 3571 if (!rl) 3572 return ERR_PTR(-ENOMEM); 3573 3574 err = mlx5e_mqprio_rl_init(rl, mdev, num_tc, max_rate); 3575 if (err) { 3576 mlx5e_mqprio_rl_free(rl); 3577 return ERR_PTR(err); 3578 } 3579 3580 return rl; 3581 } 3582 3583 static int mlx5e_setup_tc_mqprio_channel(struct mlx5e_priv *priv, 3584 struct tc_mqprio_qopt_offload *mqprio) 3585 { 3586 mlx5e_fp_preactivate preactivate; 3587 struct mlx5e_params new_params; 3588 struct mlx5e_mqprio_rl *rl; 3589 bool nch_changed; 3590 int err; 3591 3592 err = mlx5e_mqprio_channel_validate(priv, mqprio); 3593 if (err) 3594 return err; 3595 3596 rl = mlx5e_mqprio_rl_create(priv->mdev, mqprio->qopt.num_tc, mqprio->max_rate); 3597 if (IS_ERR(rl)) 3598 return PTR_ERR(rl); 3599 3600 new_params = priv->channels.params; 3601 mlx5e_params_mqprio_channel_set(&new_params, mqprio, rl); 3602 3603 nch_changed = mlx5e_get_dcb_num_tc(&priv->channels.params) > 1; 3604 preactivate = nch_changed ? mlx5e_num_channels_changed_ctx : 3605 mlx5e_update_netdev_queues_ctx; 3606 err = mlx5e_safe_switch_params(priv, &new_params, preactivate, NULL, true); 3607 if (err) { 3608 if (rl) { 3609 mlx5e_mqprio_rl_cleanup(rl); 3610 mlx5e_mqprio_rl_free(rl); 3611 } 3612 return err; 3613 } 3614 3615 if (priv->mqprio_rl) { 3616 mlx5e_mqprio_rl_cleanup(priv->mqprio_rl); 3617 mlx5e_mqprio_rl_free(priv->mqprio_rl); 3618 } 3619 priv->mqprio_rl = rl; 3620 3621 return 0; 3622 } 3623 3624 static int mlx5e_setup_tc_mqprio(struct mlx5e_priv *priv, 3625 struct tc_mqprio_qopt_offload *mqprio) 3626 { 3627 /* MQPRIO is another toplevel qdisc that can't be attached 3628 * simultaneously with the offloaded HTB. 3629 */ 3630 if (WARN_ON(mlx5e_selq_is_htb_enabled(&priv->selq))) 3631 return -EINVAL; 3632 3633 switch (mqprio->mode) { 3634 case TC_MQPRIO_MODE_DCB: 3635 return mlx5e_setup_tc_mqprio_dcb(priv, &mqprio->qopt); 3636 case TC_MQPRIO_MODE_CHANNEL: 3637 return mlx5e_setup_tc_mqprio_channel(priv, mqprio); 3638 default: 3639 return -EOPNOTSUPP; 3640 } 3641 } 3642 3643 static LIST_HEAD(mlx5e_block_cb_list); 3644 3645 static int mlx5e_setup_tc(struct net_device *dev, enum tc_setup_type type, 3646 void *type_data) 3647 { 3648 struct mlx5e_priv *priv = netdev_priv(dev); 3649 bool tc_unbind = false; 3650 int err; 3651 3652 if (type == TC_SETUP_BLOCK && 3653 ((struct flow_block_offload *)type_data)->command == FLOW_BLOCK_UNBIND) 3654 tc_unbind = true; 3655 3656 if (!netif_device_present(dev) && !tc_unbind) 3657 return -ENODEV; 3658 3659 switch (type) { 3660 case TC_SETUP_BLOCK: { 3661 struct flow_block_offload *f = type_data; 3662 3663 f->unlocked_driver_cb = true; 3664 return flow_block_cb_setup_simple(type_data, 3665 &mlx5e_block_cb_list, 3666 mlx5e_setup_tc_block_cb, 3667 priv, priv, true); 3668 } 3669 case TC_SETUP_QDISC_MQPRIO: 3670 mutex_lock(&priv->state_lock); 3671 err = mlx5e_setup_tc_mqprio(priv, type_data); 3672 mutex_unlock(&priv->state_lock); 3673 return err; 3674 case TC_SETUP_QDISC_HTB: 3675 mutex_lock(&priv->state_lock); 3676 err = mlx5e_htb_setup_tc(priv, type_data); 3677 mutex_unlock(&priv->state_lock); 3678 return err; 3679 default: 3680 return -EOPNOTSUPP; 3681 } 3682 } 3683 3684 void mlx5e_fold_sw_stats64(struct mlx5e_priv *priv, struct rtnl_link_stats64 *s) 3685 { 3686 int i; 3687 3688 for (i = 0; i < priv->stats_nch; i++) { 3689 struct mlx5e_channel_stats *channel_stats = priv->channel_stats[i]; 3690 struct mlx5e_rq_stats *xskrq_stats = &channel_stats->xskrq; 3691 struct mlx5e_rq_stats *rq_stats = &channel_stats->rq; 3692 int j; 3693 3694 s->rx_packets += rq_stats->packets + xskrq_stats->packets; 3695 s->rx_bytes += rq_stats->bytes + xskrq_stats->bytes; 3696 s->multicast += rq_stats->mcast_packets + xskrq_stats->mcast_packets; 3697 3698 for (j = 0; j < priv->max_opened_tc; j++) { 3699 struct mlx5e_sq_stats *sq_stats = &channel_stats->sq[j]; 3700 3701 s->tx_packets += sq_stats->packets; 3702 s->tx_bytes += sq_stats->bytes; 3703 s->tx_dropped += sq_stats->dropped; 3704 } 3705 } 3706 if (priv->tx_ptp_opened) { 3707 for (i = 0; i < priv->max_opened_tc; i++) { 3708 struct mlx5e_sq_stats *sq_stats = &priv->ptp_stats.sq[i]; 3709 3710 s->tx_packets += sq_stats->packets; 3711 s->tx_bytes += sq_stats->bytes; 3712 s->tx_dropped += sq_stats->dropped; 3713 } 3714 } 3715 if (priv->rx_ptp_opened) { 3716 struct mlx5e_rq_stats *rq_stats = &priv->ptp_stats.rq; 3717 3718 s->rx_packets += rq_stats->packets; 3719 s->rx_bytes += rq_stats->bytes; 3720 s->multicast += rq_stats->mcast_packets; 3721 } 3722 } 3723 3724 void 3725 mlx5e_get_stats(struct net_device *dev, struct rtnl_link_stats64 *stats) 3726 { 3727 struct mlx5e_priv *priv = netdev_priv(dev); 3728 struct mlx5e_pport_stats *pstats = &priv->stats.pport; 3729 3730 if (!netif_device_present(dev)) 3731 return; 3732 3733 /* In switchdev mode, monitor counters doesn't monitor 3734 * rx/tx stats of 802_3. The update stats mechanism 3735 * should keep the 802_3 layout counters updated 3736 */ 3737 if (!mlx5e_monitor_counter_supported(priv) || 3738 mlx5e_is_uplink_rep(priv)) { 3739 /* update HW stats in background for next time */ 3740 mlx5e_queue_update_stats(priv); 3741 } 3742 3743 if (mlx5e_is_uplink_rep(priv)) { 3744 struct mlx5e_vport_stats *vstats = &priv->stats.vport; 3745 3746 stats->rx_packets = PPORT_802_3_GET(pstats, a_frames_received_ok); 3747 stats->rx_bytes = PPORT_802_3_GET(pstats, a_octets_received_ok); 3748 stats->tx_packets = PPORT_802_3_GET(pstats, a_frames_transmitted_ok); 3749 stats->tx_bytes = PPORT_802_3_GET(pstats, a_octets_transmitted_ok); 3750 3751 /* vport multicast also counts packets that are dropped due to steering 3752 * or rx out of buffer 3753 */ 3754 stats->multicast = VPORT_COUNTER_GET(vstats, received_eth_multicast.packets); 3755 } else { 3756 mlx5e_fold_sw_stats64(priv, stats); 3757 } 3758 3759 stats->rx_missed_errors = priv->stats.qcnt.rx_out_of_buffer; 3760 3761 stats->rx_length_errors = 3762 PPORT_802_3_GET(pstats, a_in_range_length_errors) + 3763 PPORT_802_3_GET(pstats, a_out_of_range_length_field) + 3764 PPORT_802_3_GET(pstats, a_frame_too_long_errors) + 3765 VNIC_ENV_GET(&priv->stats.vnic, eth_wqe_too_small); 3766 stats->rx_crc_errors = 3767 PPORT_802_3_GET(pstats, a_frame_check_sequence_errors); 3768 stats->rx_frame_errors = PPORT_802_3_GET(pstats, a_alignment_errors); 3769 stats->tx_aborted_errors = PPORT_2863_GET(pstats, if_out_discards); 3770 stats->rx_errors = stats->rx_length_errors + stats->rx_crc_errors + 3771 stats->rx_frame_errors; 3772 stats->tx_errors = stats->tx_aborted_errors + stats->tx_carrier_errors; 3773 } 3774 3775 static void mlx5e_nic_set_rx_mode(struct mlx5e_priv *priv) 3776 { 3777 if (mlx5e_is_uplink_rep(priv)) 3778 return; /* no rx mode for uplink rep */ 3779 3780 queue_work(priv->wq, &priv->set_rx_mode_work); 3781 } 3782 3783 static void mlx5e_set_rx_mode(struct net_device *dev) 3784 { 3785 struct mlx5e_priv *priv = netdev_priv(dev); 3786 3787 mlx5e_nic_set_rx_mode(priv); 3788 } 3789 3790 static int mlx5e_set_mac(struct net_device *netdev, void *addr) 3791 { 3792 struct mlx5e_priv *priv = netdev_priv(netdev); 3793 struct sockaddr *saddr = addr; 3794 3795 if (!is_valid_ether_addr(saddr->sa_data)) 3796 return -EADDRNOTAVAIL; 3797 3798 netif_addr_lock_bh(netdev); 3799 eth_hw_addr_set(netdev, saddr->sa_data); 3800 netif_addr_unlock_bh(netdev); 3801 3802 mlx5e_nic_set_rx_mode(priv); 3803 3804 return 0; 3805 } 3806 3807 #define MLX5E_SET_FEATURE(features, feature, enable) \ 3808 do { \ 3809 if (enable) \ 3810 *features |= feature; \ 3811 else \ 3812 *features &= ~feature; \ 3813 } while (0) 3814 3815 typedef int (*mlx5e_feature_handler)(struct net_device *netdev, bool enable); 3816 3817 static int set_feature_lro(struct net_device *netdev, bool enable) 3818 { 3819 struct mlx5e_priv *priv = netdev_priv(netdev); 3820 struct mlx5_core_dev *mdev = priv->mdev; 3821 struct mlx5e_params *cur_params; 3822 struct mlx5e_params new_params; 3823 bool reset = true; 3824 int err = 0; 3825 3826 mutex_lock(&priv->state_lock); 3827 3828 cur_params = &priv->channels.params; 3829 new_params = *cur_params; 3830 3831 if (enable) 3832 new_params.packet_merge.type = MLX5E_PACKET_MERGE_LRO; 3833 else if (new_params.packet_merge.type == MLX5E_PACKET_MERGE_LRO) 3834 new_params.packet_merge.type = MLX5E_PACKET_MERGE_NONE; 3835 else 3836 goto out; 3837 3838 if (!(cur_params->packet_merge.type == MLX5E_PACKET_MERGE_SHAMPO && 3839 new_params.packet_merge.type == MLX5E_PACKET_MERGE_LRO)) { 3840 if (cur_params->rq_wq_type == MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ) { 3841 if (mlx5e_rx_mpwqe_is_linear_skb(mdev, cur_params, NULL) == 3842 mlx5e_rx_mpwqe_is_linear_skb(mdev, &new_params, NULL)) 3843 reset = false; 3844 } 3845 } 3846 3847 err = mlx5e_safe_switch_params(priv, &new_params, 3848 mlx5e_modify_tirs_packet_merge_ctx, NULL, reset); 3849 out: 3850 mutex_unlock(&priv->state_lock); 3851 return err; 3852 } 3853 3854 static int set_feature_hw_gro(struct net_device *netdev, bool enable) 3855 { 3856 struct mlx5e_priv *priv = netdev_priv(netdev); 3857 struct mlx5e_params new_params; 3858 bool reset = true; 3859 int err = 0; 3860 3861 mutex_lock(&priv->state_lock); 3862 new_params = priv->channels.params; 3863 3864 if (enable) { 3865 new_params.packet_merge.type = MLX5E_PACKET_MERGE_SHAMPO; 3866 new_params.packet_merge.shampo.match_criteria_type = 3867 MLX5_RQC_SHAMPO_MATCH_CRITERIA_TYPE_EXTENDED; 3868 new_params.packet_merge.shampo.alignment_granularity = 3869 MLX5_RQC_SHAMPO_NO_MATCH_ALIGNMENT_GRANULARITY_STRIDE; 3870 } else if (new_params.packet_merge.type == MLX5E_PACKET_MERGE_SHAMPO) { 3871 new_params.packet_merge.type = MLX5E_PACKET_MERGE_NONE; 3872 } else { 3873 goto out; 3874 } 3875 3876 err = mlx5e_safe_switch_params(priv, &new_params, NULL, NULL, reset); 3877 out: 3878 mutex_unlock(&priv->state_lock); 3879 return err; 3880 } 3881 3882 static int set_feature_cvlan_filter(struct net_device *netdev, bool enable) 3883 { 3884 struct mlx5e_priv *priv = netdev_priv(netdev); 3885 3886 if (enable) 3887 mlx5e_enable_cvlan_filter(priv->fs, 3888 !!(priv->netdev->flags & IFF_PROMISC)); 3889 else 3890 mlx5e_disable_cvlan_filter(priv->fs, 3891 !!(priv->netdev->flags & IFF_PROMISC)); 3892 3893 return 0; 3894 } 3895 3896 static int set_feature_hw_tc(struct net_device *netdev, bool enable) 3897 { 3898 struct mlx5e_priv *priv = netdev_priv(netdev); 3899 int err = 0; 3900 3901 #if IS_ENABLED(CONFIG_MLX5_CLS_ACT) 3902 int tc_flag = mlx5e_is_uplink_rep(priv) ? MLX5_TC_FLAG(ESW_OFFLOAD) : 3903 MLX5_TC_FLAG(NIC_OFFLOAD); 3904 if (!enable && mlx5e_tc_num_filters(priv, tc_flag)) { 3905 netdev_err(netdev, 3906 "Active offloaded tc filters, can't turn hw_tc_offload off\n"); 3907 return -EINVAL; 3908 } 3909 #endif 3910 3911 mutex_lock(&priv->state_lock); 3912 if (!enable && mlx5e_selq_is_htb_enabled(&priv->selq)) { 3913 netdev_err(netdev, "Active HTB offload, can't turn hw_tc_offload off\n"); 3914 err = -EINVAL; 3915 } 3916 mutex_unlock(&priv->state_lock); 3917 3918 return err; 3919 } 3920 3921 static int set_feature_rx_all(struct net_device *netdev, bool enable) 3922 { 3923 struct mlx5e_priv *priv = netdev_priv(netdev); 3924 struct mlx5_core_dev *mdev = priv->mdev; 3925 3926 return mlx5_set_port_fcs(mdev, !enable); 3927 } 3928 3929 static int mlx5e_set_rx_port_ts(struct mlx5_core_dev *mdev, bool enable) 3930 { 3931 u32 in[MLX5_ST_SZ_DW(pcmr_reg)] = {}; 3932 bool supported, curr_state; 3933 int err; 3934 3935 if (!MLX5_CAP_GEN(mdev, ports_check)) 3936 return 0; 3937 3938 err = mlx5_query_ports_check(mdev, in, sizeof(in)); 3939 if (err) 3940 return err; 3941 3942 supported = MLX5_GET(pcmr_reg, in, rx_ts_over_crc_cap); 3943 curr_state = MLX5_GET(pcmr_reg, in, rx_ts_over_crc); 3944 3945 if (!supported || enable == curr_state) 3946 return 0; 3947 3948 MLX5_SET(pcmr_reg, in, local_port, 1); 3949 MLX5_SET(pcmr_reg, in, rx_ts_over_crc, enable); 3950 3951 return mlx5_set_ports_check(mdev, in, sizeof(in)); 3952 } 3953 3954 static int mlx5e_set_rx_port_ts_wrap(struct mlx5e_priv *priv, void *ctx) 3955 { 3956 struct mlx5_core_dev *mdev = priv->mdev; 3957 bool enable = *(bool *)ctx; 3958 3959 return mlx5e_set_rx_port_ts(mdev, enable); 3960 } 3961 3962 static int set_feature_rx_fcs(struct net_device *netdev, bool enable) 3963 { 3964 struct mlx5e_priv *priv = netdev_priv(netdev); 3965 struct mlx5e_channels *chs = &priv->channels; 3966 struct mlx5e_params new_params; 3967 int err; 3968 bool rx_ts_over_crc = !enable; 3969 3970 mutex_lock(&priv->state_lock); 3971 3972 new_params = chs->params; 3973 new_params.scatter_fcs_en = enable; 3974 err = mlx5e_safe_switch_params(priv, &new_params, mlx5e_set_rx_port_ts_wrap, 3975 &rx_ts_over_crc, true); 3976 mutex_unlock(&priv->state_lock); 3977 return err; 3978 } 3979 3980 static int set_feature_rx_vlan(struct net_device *netdev, bool enable) 3981 { 3982 struct mlx5e_priv *priv = netdev_priv(netdev); 3983 int err = 0; 3984 3985 mutex_lock(&priv->state_lock); 3986 3987 mlx5e_fs_set_vlan_strip_disable(priv->fs, !enable); 3988 priv->channels.params.vlan_strip_disable = !enable; 3989 3990 if (!test_bit(MLX5E_STATE_OPENED, &priv->state)) 3991 goto unlock; 3992 3993 err = mlx5e_modify_channels_vsd(&priv->channels, !enable); 3994 if (err) { 3995 mlx5e_fs_set_vlan_strip_disable(priv->fs, enable); 3996 priv->channels.params.vlan_strip_disable = enable; 3997 } 3998 unlock: 3999 mutex_unlock(&priv->state_lock); 4000 4001 return err; 4002 } 4003 4004 int mlx5e_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid) 4005 { 4006 struct mlx5e_priv *priv = netdev_priv(dev); 4007 struct mlx5e_flow_steering *fs = priv->fs; 4008 4009 if (mlx5e_is_uplink_rep(priv)) 4010 return 0; /* no vlan table for uplink rep */ 4011 4012 return mlx5e_fs_vlan_rx_add_vid(fs, dev, proto, vid); 4013 } 4014 4015 int mlx5e_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid) 4016 { 4017 struct mlx5e_priv *priv = netdev_priv(dev); 4018 struct mlx5e_flow_steering *fs = priv->fs; 4019 4020 if (mlx5e_is_uplink_rep(priv)) 4021 return 0; /* no vlan table for uplink rep */ 4022 4023 return mlx5e_fs_vlan_rx_kill_vid(fs, dev, proto, vid); 4024 } 4025 4026 #ifdef CONFIG_MLX5_EN_ARFS 4027 static int set_feature_arfs(struct net_device *netdev, bool enable) 4028 { 4029 struct mlx5e_priv *priv = netdev_priv(netdev); 4030 int err; 4031 4032 if (enable) 4033 err = mlx5e_arfs_enable(priv->fs); 4034 else 4035 err = mlx5e_arfs_disable(priv->fs); 4036 4037 return err; 4038 } 4039 #endif 4040 4041 static int mlx5e_handle_feature(struct net_device *netdev, 4042 netdev_features_t *features, 4043 netdev_features_t feature, 4044 mlx5e_feature_handler feature_handler) 4045 { 4046 netdev_features_t changes = *features ^ netdev->features; 4047 bool enable = !!(*features & feature); 4048 int err; 4049 4050 if (!(changes & feature)) 4051 return 0; 4052 4053 err = feature_handler(netdev, enable); 4054 if (err) { 4055 MLX5E_SET_FEATURE(features, feature, !enable); 4056 netdev_err(netdev, "%s feature %pNF failed, err %d\n", 4057 enable ? "Enable" : "Disable", &feature, err); 4058 return err; 4059 } 4060 4061 return 0; 4062 } 4063 4064 void mlx5e_set_xdp_feature(struct net_device *netdev) 4065 { 4066 struct mlx5e_priv *priv = netdev_priv(netdev); 4067 struct mlx5e_params *params = &priv->channels.params; 4068 xdp_features_t val; 4069 4070 if (params->packet_merge.type != MLX5E_PACKET_MERGE_NONE) { 4071 xdp_clear_features_flag(netdev); 4072 return; 4073 } 4074 4075 val = NETDEV_XDP_ACT_BASIC | NETDEV_XDP_ACT_REDIRECT | 4076 NETDEV_XDP_ACT_XSK_ZEROCOPY | 4077 NETDEV_XDP_ACT_RX_SG | 4078 NETDEV_XDP_ACT_NDO_XMIT | 4079 NETDEV_XDP_ACT_NDO_XMIT_SG; 4080 xdp_set_features_flag(netdev, val); 4081 } 4082 4083 int mlx5e_set_features(struct net_device *netdev, netdev_features_t features) 4084 { 4085 netdev_features_t oper_features = features; 4086 int err = 0; 4087 4088 #define MLX5E_HANDLE_FEATURE(feature, handler) \ 4089 mlx5e_handle_feature(netdev, &oper_features, feature, handler) 4090 4091 err |= MLX5E_HANDLE_FEATURE(NETIF_F_LRO, set_feature_lro); 4092 err |= MLX5E_HANDLE_FEATURE(NETIF_F_GRO_HW, set_feature_hw_gro); 4093 err |= MLX5E_HANDLE_FEATURE(NETIF_F_HW_VLAN_CTAG_FILTER, 4094 set_feature_cvlan_filter); 4095 err |= MLX5E_HANDLE_FEATURE(NETIF_F_HW_TC, set_feature_hw_tc); 4096 err |= MLX5E_HANDLE_FEATURE(NETIF_F_RXALL, set_feature_rx_all); 4097 err |= MLX5E_HANDLE_FEATURE(NETIF_F_RXFCS, set_feature_rx_fcs); 4098 err |= MLX5E_HANDLE_FEATURE(NETIF_F_HW_VLAN_CTAG_RX, set_feature_rx_vlan); 4099 #ifdef CONFIG_MLX5_EN_ARFS 4100 err |= MLX5E_HANDLE_FEATURE(NETIF_F_NTUPLE, set_feature_arfs); 4101 #endif 4102 err |= MLX5E_HANDLE_FEATURE(NETIF_F_HW_TLS_RX, mlx5e_ktls_set_feature_rx); 4103 4104 if (err) { 4105 netdev->features = oper_features; 4106 return -EINVAL; 4107 } 4108 4109 /* update XDP supported features */ 4110 mlx5e_set_xdp_feature(netdev); 4111 4112 return 0; 4113 } 4114 4115 static netdev_features_t mlx5e_fix_uplink_rep_features(struct net_device *netdev, 4116 netdev_features_t features) 4117 { 4118 features &= ~NETIF_F_HW_TLS_RX; 4119 if (netdev->features & NETIF_F_HW_TLS_RX) 4120 netdev_warn(netdev, "Disabling hw_tls_rx, not supported in switchdev mode\n"); 4121 4122 features &= ~NETIF_F_HW_TLS_TX; 4123 if (netdev->features & NETIF_F_HW_TLS_TX) 4124 netdev_warn(netdev, "Disabling hw_tls_tx, not supported in switchdev mode\n"); 4125 4126 features &= ~NETIF_F_NTUPLE; 4127 if (netdev->features & NETIF_F_NTUPLE) 4128 netdev_warn(netdev, "Disabling ntuple, not supported in switchdev mode\n"); 4129 4130 features &= ~NETIF_F_GRO_HW; 4131 if (netdev->features & NETIF_F_GRO_HW) 4132 netdev_warn(netdev, "Disabling HW_GRO, not supported in switchdev mode\n"); 4133 4134 features &= ~NETIF_F_HW_VLAN_CTAG_FILTER; 4135 if (netdev->features & NETIF_F_HW_VLAN_CTAG_FILTER) 4136 netdev_warn(netdev, "Disabling HW_VLAN CTAG FILTERING, not supported in switchdev mode\n"); 4137 4138 return features; 4139 } 4140 4141 static netdev_features_t mlx5e_fix_features(struct net_device *netdev, 4142 netdev_features_t features) 4143 { 4144 struct mlx5e_priv *priv = netdev_priv(netdev); 4145 struct mlx5e_vlan_table *vlan; 4146 struct mlx5e_params *params; 4147 4148 if (!netif_device_present(netdev)) 4149 return features; 4150 4151 vlan = mlx5e_fs_get_vlan(priv->fs); 4152 mutex_lock(&priv->state_lock); 4153 params = &priv->channels.params; 4154 if (!vlan || 4155 !bitmap_empty(mlx5e_vlan_get_active_svlans(vlan), VLAN_N_VID)) { 4156 /* HW strips the outer C-tag header, this is a problem 4157 * for S-tag traffic. 4158 */ 4159 features &= ~NETIF_F_HW_VLAN_CTAG_RX; 4160 if (!params->vlan_strip_disable) 4161 netdev_warn(netdev, "Dropping C-tag vlan stripping offload due to S-tag vlan\n"); 4162 } 4163 4164 if (!MLX5E_GET_PFLAG(params, MLX5E_PFLAG_RX_STRIDING_RQ)) { 4165 if (features & NETIF_F_LRO) { 4166 netdev_warn(netdev, "Disabling LRO, not supported in legacy RQ\n"); 4167 features &= ~NETIF_F_LRO; 4168 } 4169 if (features & NETIF_F_GRO_HW) { 4170 netdev_warn(netdev, "Disabling HW-GRO, not supported in legacy RQ\n"); 4171 features &= ~NETIF_F_GRO_HW; 4172 } 4173 } 4174 4175 if (params->xdp_prog) { 4176 if (features & NETIF_F_LRO) { 4177 netdev_warn(netdev, "LRO is incompatible with XDP\n"); 4178 features &= ~NETIF_F_LRO; 4179 } 4180 if (features & NETIF_F_GRO_HW) { 4181 netdev_warn(netdev, "HW GRO is incompatible with XDP\n"); 4182 features &= ~NETIF_F_GRO_HW; 4183 } 4184 } 4185 4186 if (priv->xsk.refcnt) { 4187 if (features & NETIF_F_LRO) { 4188 netdev_warn(netdev, "LRO is incompatible with AF_XDP (%u XSKs are active)\n", 4189 priv->xsk.refcnt); 4190 features &= ~NETIF_F_LRO; 4191 } 4192 if (features & NETIF_F_GRO_HW) { 4193 netdev_warn(netdev, "HW GRO is incompatible with AF_XDP (%u XSKs are active)\n", 4194 priv->xsk.refcnt); 4195 features &= ~NETIF_F_GRO_HW; 4196 } 4197 } 4198 4199 if (MLX5E_GET_PFLAG(params, MLX5E_PFLAG_RX_CQE_COMPRESS)) { 4200 features &= ~NETIF_F_RXHASH; 4201 if (netdev->features & NETIF_F_RXHASH) 4202 netdev_warn(netdev, "Disabling rxhash, not supported when CQE compress is active\n"); 4203 4204 if (features & NETIF_F_GRO_HW) { 4205 netdev_warn(netdev, "Disabling HW-GRO, not supported when CQE compress is active\n"); 4206 features &= ~NETIF_F_GRO_HW; 4207 } 4208 } 4209 4210 if (mlx5e_is_uplink_rep(priv)) { 4211 features = mlx5e_fix_uplink_rep_features(netdev, features); 4212 features |= NETIF_F_NETNS_LOCAL; 4213 } else { 4214 features &= ~NETIF_F_NETNS_LOCAL; 4215 } 4216 4217 mutex_unlock(&priv->state_lock); 4218 4219 return features; 4220 } 4221 4222 static bool mlx5e_xsk_validate_mtu(struct net_device *netdev, 4223 struct mlx5e_channels *chs, 4224 struct mlx5e_params *new_params, 4225 struct mlx5_core_dev *mdev) 4226 { 4227 u16 ix; 4228 4229 for (ix = 0; ix < chs->params.num_channels; ix++) { 4230 struct xsk_buff_pool *xsk_pool = 4231 mlx5e_xsk_get_pool(&chs->params, chs->params.xsk, ix); 4232 struct mlx5e_xsk_param xsk; 4233 int max_xdp_mtu; 4234 4235 if (!xsk_pool) 4236 continue; 4237 4238 mlx5e_build_xsk_param(xsk_pool, &xsk); 4239 max_xdp_mtu = mlx5e_xdp_max_mtu(new_params, &xsk); 4240 4241 /* Validate XSK params and XDP MTU in advance */ 4242 if (!mlx5e_validate_xsk_param(new_params, &xsk, mdev) || 4243 new_params->sw_mtu > max_xdp_mtu) { 4244 u32 hr = mlx5e_get_linear_rq_headroom(new_params, &xsk); 4245 int max_mtu_frame, max_mtu_page, max_mtu; 4246 4247 /* Two criteria must be met: 4248 * 1. HW MTU + all headrooms <= XSK frame size. 4249 * 2. Size of SKBs allocated on XDP_PASS <= PAGE_SIZE. 4250 */ 4251 max_mtu_frame = MLX5E_HW2SW_MTU(new_params, xsk.chunk_size - hr); 4252 max_mtu_page = MLX5E_HW2SW_MTU(new_params, SKB_MAX_HEAD(0)); 4253 max_mtu = min3(max_mtu_frame, max_mtu_page, max_xdp_mtu); 4254 4255 netdev_err(netdev, "MTU %d is too big for an XSK running on channel %u or its redirection XDP program. Try MTU <= %d\n", 4256 new_params->sw_mtu, ix, max_mtu); 4257 return false; 4258 } 4259 } 4260 4261 return true; 4262 } 4263 4264 static bool mlx5e_params_validate_xdp(struct net_device *netdev, 4265 struct mlx5_core_dev *mdev, 4266 struct mlx5e_params *params) 4267 { 4268 bool is_linear; 4269 4270 /* No XSK params: AF_XDP can't be enabled yet at the point of setting 4271 * the XDP program. 4272 */ 4273 is_linear = params->rq_wq_type == MLX5_WQ_TYPE_CYCLIC ? 4274 mlx5e_rx_is_linear_skb(mdev, params, NULL) : 4275 mlx5e_rx_mpwqe_is_linear_skb(mdev, params, NULL); 4276 4277 if (!is_linear) { 4278 if (!params->xdp_prog->aux->xdp_has_frags) { 4279 netdev_warn(netdev, "MTU(%d) > %d, too big for an XDP program not aware of multi buffer\n", 4280 params->sw_mtu, 4281 mlx5e_xdp_max_mtu(params, NULL)); 4282 return false; 4283 } 4284 if (params->rq_wq_type == MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ && 4285 !mlx5e_verify_params_rx_mpwqe_strides(mdev, params, NULL)) { 4286 netdev_warn(netdev, "XDP is not allowed with striding RQ and MTU(%d) > %d\n", 4287 params->sw_mtu, 4288 mlx5e_xdp_max_mtu(params, NULL)); 4289 return false; 4290 } 4291 } 4292 4293 return true; 4294 } 4295 4296 int mlx5e_change_mtu(struct net_device *netdev, int new_mtu, 4297 mlx5e_fp_preactivate preactivate) 4298 { 4299 struct mlx5e_priv *priv = netdev_priv(netdev); 4300 struct mlx5e_params new_params; 4301 struct mlx5e_params *params; 4302 bool reset = true; 4303 int err = 0; 4304 4305 mutex_lock(&priv->state_lock); 4306 4307 params = &priv->channels.params; 4308 4309 new_params = *params; 4310 new_params.sw_mtu = new_mtu; 4311 err = mlx5e_validate_params(priv->mdev, &new_params); 4312 if (err) 4313 goto out; 4314 4315 if (new_params.xdp_prog && !mlx5e_params_validate_xdp(netdev, priv->mdev, 4316 &new_params)) { 4317 err = -EINVAL; 4318 goto out; 4319 } 4320 4321 if (priv->xsk.refcnt && 4322 !mlx5e_xsk_validate_mtu(netdev, &priv->channels, 4323 &new_params, priv->mdev)) { 4324 err = -EINVAL; 4325 goto out; 4326 } 4327 4328 if (params->packet_merge.type == MLX5E_PACKET_MERGE_LRO) 4329 reset = false; 4330 4331 if (params->rq_wq_type == MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ && 4332 params->packet_merge.type != MLX5E_PACKET_MERGE_SHAMPO) { 4333 bool is_linear_old = mlx5e_rx_mpwqe_is_linear_skb(priv->mdev, params, NULL); 4334 bool is_linear_new = mlx5e_rx_mpwqe_is_linear_skb(priv->mdev, 4335 &new_params, NULL); 4336 u8 sz_old = mlx5e_mpwqe_get_log_rq_size(priv->mdev, params, NULL); 4337 u8 sz_new = mlx5e_mpwqe_get_log_rq_size(priv->mdev, &new_params, NULL); 4338 4339 /* Always reset in linear mode - hw_mtu is used in data path. 4340 * Check that the mode was non-linear and didn't change. 4341 * If XSK is active, XSK RQs are linear. 4342 * Reset if the RQ size changed, even if it's non-linear. 4343 */ 4344 if (!is_linear_old && !is_linear_new && !priv->xsk.refcnt && 4345 sz_old == sz_new) 4346 reset = false; 4347 } 4348 4349 err = mlx5e_safe_switch_params(priv, &new_params, preactivate, NULL, reset); 4350 4351 out: 4352 netdev->mtu = params->sw_mtu; 4353 mutex_unlock(&priv->state_lock); 4354 return err; 4355 } 4356 4357 static int mlx5e_change_nic_mtu(struct net_device *netdev, int new_mtu) 4358 { 4359 return mlx5e_change_mtu(netdev, new_mtu, mlx5e_set_dev_port_mtu_ctx); 4360 } 4361 4362 int mlx5e_ptp_rx_manage_fs_ctx(struct mlx5e_priv *priv, void *ctx) 4363 { 4364 bool set = *(bool *)ctx; 4365 4366 return mlx5e_ptp_rx_manage_fs(priv, set); 4367 } 4368 4369 static int mlx5e_hwstamp_config_no_ptp_rx(struct mlx5e_priv *priv, bool rx_filter) 4370 { 4371 bool rx_cqe_compress_def = priv->channels.params.rx_cqe_compress_def; 4372 int err; 4373 4374 if (!rx_filter) 4375 /* Reset CQE compression to Admin default */ 4376 return mlx5e_modify_rx_cqe_compression_locked(priv, rx_cqe_compress_def, false); 4377 4378 if (!MLX5E_GET_PFLAG(&priv->channels.params, MLX5E_PFLAG_RX_CQE_COMPRESS)) 4379 return 0; 4380 4381 /* Disable CQE compression */ 4382 netdev_warn(priv->netdev, "Disabling RX cqe compression\n"); 4383 err = mlx5e_modify_rx_cqe_compression_locked(priv, false, true); 4384 if (err) 4385 netdev_err(priv->netdev, "Failed disabling cqe compression err=%d\n", err); 4386 4387 return err; 4388 } 4389 4390 static int mlx5e_hwstamp_config_ptp_rx(struct mlx5e_priv *priv, bool ptp_rx) 4391 { 4392 struct mlx5e_params new_params; 4393 4394 if (ptp_rx == priv->channels.params.ptp_rx) 4395 return 0; 4396 4397 new_params = priv->channels.params; 4398 new_params.ptp_rx = ptp_rx; 4399 return mlx5e_safe_switch_params(priv, &new_params, mlx5e_ptp_rx_manage_fs_ctx, 4400 &new_params.ptp_rx, true); 4401 } 4402 4403 int mlx5e_hwstamp_set(struct mlx5e_priv *priv, struct ifreq *ifr) 4404 { 4405 struct hwtstamp_config config; 4406 bool rx_cqe_compress_def; 4407 bool ptp_rx; 4408 int err; 4409 4410 if (!MLX5_CAP_GEN(priv->mdev, device_frequency_khz) || 4411 (mlx5_clock_get_ptp_index(priv->mdev) == -1)) 4412 return -EOPNOTSUPP; 4413 4414 if (copy_from_user(&config, ifr->ifr_data, sizeof(config))) 4415 return -EFAULT; 4416 4417 /* TX HW timestamp */ 4418 switch (config.tx_type) { 4419 case HWTSTAMP_TX_OFF: 4420 case HWTSTAMP_TX_ON: 4421 break; 4422 default: 4423 return -ERANGE; 4424 } 4425 4426 mutex_lock(&priv->state_lock); 4427 rx_cqe_compress_def = priv->channels.params.rx_cqe_compress_def; 4428 4429 /* RX HW timestamp */ 4430 switch (config.rx_filter) { 4431 case HWTSTAMP_FILTER_NONE: 4432 ptp_rx = false; 4433 break; 4434 case HWTSTAMP_FILTER_ALL: 4435 case HWTSTAMP_FILTER_SOME: 4436 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: 4437 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: 4438 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: 4439 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: 4440 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: 4441 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: 4442 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: 4443 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: 4444 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: 4445 case HWTSTAMP_FILTER_PTP_V2_EVENT: 4446 case HWTSTAMP_FILTER_PTP_V2_SYNC: 4447 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: 4448 case HWTSTAMP_FILTER_NTP_ALL: 4449 config.rx_filter = HWTSTAMP_FILTER_ALL; 4450 /* ptp_rx is set if both HW TS is set and CQE 4451 * compression is set 4452 */ 4453 ptp_rx = rx_cqe_compress_def; 4454 break; 4455 default: 4456 err = -ERANGE; 4457 goto err_unlock; 4458 } 4459 4460 if (!mlx5e_profile_feature_cap(priv->profile, PTP_RX)) 4461 err = mlx5e_hwstamp_config_no_ptp_rx(priv, 4462 config.rx_filter != HWTSTAMP_FILTER_NONE); 4463 else 4464 err = mlx5e_hwstamp_config_ptp_rx(priv, ptp_rx); 4465 if (err) 4466 goto err_unlock; 4467 4468 memcpy(&priv->tstamp, &config, sizeof(config)); 4469 mutex_unlock(&priv->state_lock); 4470 4471 /* might need to fix some features */ 4472 netdev_update_features(priv->netdev); 4473 4474 return copy_to_user(ifr->ifr_data, &config, 4475 sizeof(config)) ? -EFAULT : 0; 4476 err_unlock: 4477 mutex_unlock(&priv->state_lock); 4478 return err; 4479 } 4480 4481 int mlx5e_hwstamp_get(struct mlx5e_priv *priv, struct ifreq *ifr) 4482 { 4483 struct hwtstamp_config *cfg = &priv->tstamp; 4484 4485 if (!MLX5_CAP_GEN(priv->mdev, device_frequency_khz)) 4486 return -EOPNOTSUPP; 4487 4488 return copy_to_user(ifr->ifr_data, cfg, sizeof(*cfg)) ? -EFAULT : 0; 4489 } 4490 4491 static int mlx5e_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) 4492 { 4493 struct mlx5e_priv *priv = netdev_priv(dev); 4494 4495 switch (cmd) { 4496 case SIOCSHWTSTAMP: 4497 return mlx5e_hwstamp_set(priv, ifr); 4498 case SIOCGHWTSTAMP: 4499 return mlx5e_hwstamp_get(priv, ifr); 4500 default: 4501 return -EOPNOTSUPP; 4502 } 4503 } 4504 4505 #ifdef CONFIG_MLX5_ESWITCH 4506 int mlx5e_set_vf_mac(struct net_device *dev, int vf, u8 *mac) 4507 { 4508 struct mlx5e_priv *priv = netdev_priv(dev); 4509 struct mlx5_core_dev *mdev = priv->mdev; 4510 4511 return mlx5_eswitch_set_vport_mac(mdev->priv.eswitch, vf + 1, mac); 4512 } 4513 4514 static int mlx5e_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos, 4515 __be16 vlan_proto) 4516 { 4517 struct mlx5e_priv *priv = netdev_priv(dev); 4518 struct mlx5_core_dev *mdev = priv->mdev; 4519 4520 if (vlan_proto != htons(ETH_P_8021Q)) 4521 return -EPROTONOSUPPORT; 4522 4523 return mlx5_eswitch_set_vport_vlan(mdev->priv.eswitch, vf + 1, 4524 vlan, qos); 4525 } 4526 4527 static int mlx5e_set_vf_spoofchk(struct net_device *dev, int vf, bool setting) 4528 { 4529 struct mlx5e_priv *priv = netdev_priv(dev); 4530 struct mlx5_core_dev *mdev = priv->mdev; 4531 4532 return mlx5_eswitch_set_vport_spoofchk(mdev->priv.eswitch, vf + 1, setting); 4533 } 4534 4535 static int mlx5e_set_vf_trust(struct net_device *dev, int vf, bool setting) 4536 { 4537 struct mlx5e_priv *priv = netdev_priv(dev); 4538 struct mlx5_core_dev *mdev = priv->mdev; 4539 4540 return mlx5_eswitch_set_vport_trust(mdev->priv.eswitch, vf + 1, setting); 4541 } 4542 4543 int mlx5e_set_vf_rate(struct net_device *dev, int vf, int min_tx_rate, 4544 int max_tx_rate) 4545 { 4546 struct mlx5e_priv *priv = netdev_priv(dev); 4547 struct mlx5_core_dev *mdev = priv->mdev; 4548 4549 return mlx5_eswitch_set_vport_rate(mdev->priv.eswitch, vf + 1, 4550 max_tx_rate, min_tx_rate); 4551 } 4552 4553 static int mlx5_vport_link2ifla(u8 esw_link) 4554 { 4555 switch (esw_link) { 4556 case MLX5_VPORT_ADMIN_STATE_DOWN: 4557 return IFLA_VF_LINK_STATE_DISABLE; 4558 case MLX5_VPORT_ADMIN_STATE_UP: 4559 return IFLA_VF_LINK_STATE_ENABLE; 4560 } 4561 return IFLA_VF_LINK_STATE_AUTO; 4562 } 4563 4564 static int mlx5_ifla_link2vport(u8 ifla_link) 4565 { 4566 switch (ifla_link) { 4567 case IFLA_VF_LINK_STATE_DISABLE: 4568 return MLX5_VPORT_ADMIN_STATE_DOWN; 4569 case IFLA_VF_LINK_STATE_ENABLE: 4570 return MLX5_VPORT_ADMIN_STATE_UP; 4571 } 4572 return MLX5_VPORT_ADMIN_STATE_AUTO; 4573 } 4574 4575 static int mlx5e_set_vf_link_state(struct net_device *dev, int vf, 4576 int link_state) 4577 { 4578 struct mlx5e_priv *priv = netdev_priv(dev); 4579 struct mlx5_core_dev *mdev = priv->mdev; 4580 4581 if (mlx5e_is_uplink_rep(priv)) 4582 return -EOPNOTSUPP; 4583 4584 return mlx5_eswitch_set_vport_state(mdev->priv.eswitch, vf + 1, 4585 mlx5_ifla_link2vport(link_state)); 4586 } 4587 4588 int mlx5e_get_vf_config(struct net_device *dev, 4589 int vf, struct ifla_vf_info *ivi) 4590 { 4591 struct mlx5e_priv *priv = netdev_priv(dev); 4592 struct mlx5_core_dev *mdev = priv->mdev; 4593 int err; 4594 4595 if (!netif_device_present(dev)) 4596 return -EOPNOTSUPP; 4597 4598 err = mlx5_eswitch_get_vport_config(mdev->priv.eswitch, vf + 1, ivi); 4599 if (err) 4600 return err; 4601 ivi->linkstate = mlx5_vport_link2ifla(ivi->linkstate); 4602 return 0; 4603 } 4604 4605 int mlx5e_get_vf_stats(struct net_device *dev, 4606 int vf, struct ifla_vf_stats *vf_stats) 4607 { 4608 struct mlx5e_priv *priv = netdev_priv(dev); 4609 struct mlx5_core_dev *mdev = priv->mdev; 4610 4611 return mlx5_eswitch_get_vport_stats(mdev->priv.eswitch, vf + 1, 4612 vf_stats); 4613 } 4614 4615 static bool 4616 mlx5e_has_offload_stats(const struct net_device *dev, int attr_id) 4617 { 4618 struct mlx5e_priv *priv = netdev_priv(dev); 4619 4620 if (!netif_device_present(dev)) 4621 return false; 4622 4623 if (!mlx5e_is_uplink_rep(priv)) 4624 return false; 4625 4626 return mlx5e_rep_has_offload_stats(dev, attr_id); 4627 } 4628 4629 static int 4630 mlx5e_get_offload_stats(int attr_id, const struct net_device *dev, 4631 void *sp) 4632 { 4633 struct mlx5e_priv *priv = netdev_priv(dev); 4634 4635 if (!mlx5e_is_uplink_rep(priv)) 4636 return -EOPNOTSUPP; 4637 4638 return mlx5e_rep_get_offload_stats(attr_id, dev, sp); 4639 } 4640 #endif 4641 4642 static bool mlx5e_tunnel_proto_supported_tx(struct mlx5_core_dev *mdev, u8 proto_type) 4643 { 4644 switch (proto_type) { 4645 case IPPROTO_GRE: 4646 return MLX5_CAP_ETH(mdev, tunnel_stateless_gre); 4647 case IPPROTO_IPIP: 4648 case IPPROTO_IPV6: 4649 return (MLX5_CAP_ETH(mdev, tunnel_stateless_ip_over_ip) || 4650 MLX5_CAP_ETH(mdev, tunnel_stateless_ip_over_ip_tx)); 4651 default: 4652 return false; 4653 } 4654 } 4655 4656 static bool mlx5e_gre_tunnel_inner_proto_offload_supported(struct mlx5_core_dev *mdev, 4657 struct sk_buff *skb) 4658 { 4659 switch (skb->inner_protocol) { 4660 case htons(ETH_P_IP): 4661 case htons(ETH_P_IPV6): 4662 case htons(ETH_P_TEB): 4663 return true; 4664 case htons(ETH_P_MPLS_UC): 4665 case htons(ETH_P_MPLS_MC): 4666 return MLX5_CAP_ETH(mdev, tunnel_stateless_mpls_over_gre); 4667 } 4668 return false; 4669 } 4670 4671 static netdev_features_t mlx5e_tunnel_features_check(struct mlx5e_priv *priv, 4672 struct sk_buff *skb, 4673 netdev_features_t features) 4674 { 4675 unsigned int offset = 0; 4676 struct udphdr *udph; 4677 u8 proto; 4678 u16 port; 4679 4680 switch (vlan_get_protocol(skb)) { 4681 case htons(ETH_P_IP): 4682 proto = ip_hdr(skb)->protocol; 4683 break; 4684 case htons(ETH_P_IPV6): 4685 proto = ipv6_find_hdr(skb, &offset, -1, NULL, NULL); 4686 break; 4687 default: 4688 goto out; 4689 } 4690 4691 switch (proto) { 4692 case IPPROTO_GRE: 4693 if (mlx5e_gre_tunnel_inner_proto_offload_supported(priv->mdev, skb)) 4694 return features; 4695 break; 4696 case IPPROTO_IPIP: 4697 case IPPROTO_IPV6: 4698 if (mlx5e_tunnel_proto_supported_tx(priv->mdev, IPPROTO_IPIP)) 4699 return features; 4700 break; 4701 case IPPROTO_UDP: 4702 udph = udp_hdr(skb); 4703 port = be16_to_cpu(udph->dest); 4704 4705 /* Verify if UDP port is being offloaded by HW */ 4706 if (mlx5_vxlan_lookup_port(priv->mdev->vxlan, port)) 4707 return features; 4708 4709 #if IS_ENABLED(CONFIG_GENEVE) 4710 /* Support Geneve offload for default UDP port */ 4711 if (port == GENEVE_UDP_PORT && mlx5_geneve_tx_allowed(priv->mdev)) 4712 return features; 4713 #endif 4714 break; 4715 #ifdef CONFIG_MLX5_EN_IPSEC 4716 case IPPROTO_ESP: 4717 return mlx5e_ipsec_feature_check(skb, features); 4718 #endif 4719 } 4720 4721 out: 4722 /* Disable CSUM and GSO if the udp dport is not offloaded by HW */ 4723 return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK); 4724 } 4725 4726 netdev_features_t mlx5e_features_check(struct sk_buff *skb, 4727 struct net_device *netdev, 4728 netdev_features_t features) 4729 { 4730 struct mlx5e_priv *priv = netdev_priv(netdev); 4731 4732 features = vlan_features_check(skb, features); 4733 features = vxlan_features_check(skb, features); 4734 4735 /* Validate if the tunneled packet is being offloaded by HW */ 4736 if (skb->encapsulation && 4737 (features & NETIF_F_CSUM_MASK || features & NETIF_F_GSO_MASK)) 4738 return mlx5e_tunnel_features_check(priv, skb, features); 4739 4740 return features; 4741 } 4742 4743 static void mlx5e_tx_timeout_work(struct work_struct *work) 4744 { 4745 struct mlx5e_priv *priv = container_of(work, struct mlx5e_priv, 4746 tx_timeout_work); 4747 struct net_device *netdev = priv->netdev; 4748 int i; 4749 4750 /* Take rtnl_lock to ensure no change in netdev->real_num_tx_queues 4751 * through this flow. However, channel closing flows have to wait for 4752 * this work to finish while holding rtnl lock too. So either get the 4753 * lock or find that channels are being closed for other reason and 4754 * this work is not relevant anymore. 4755 */ 4756 while (!rtnl_trylock()) { 4757 if (!test_bit(MLX5E_STATE_CHANNELS_ACTIVE, &priv->state)) 4758 return; 4759 msleep(20); 4760 } 4761 4762 if (!test_bit(MLX5E_STATE_OPENED, &priv->state)) 4763 goto unlock; 4764 4765 for (i = 0; i < netdev->real_num_tx_queues; i++) { 4766 struct netdev_queue *dev_queue = 4767 netdev_get_tx_queue(netdev, i); 4768 struct mlx5e_txqsq *sq = priv->txq2sq[i]; 4769 4770 if (!netif_xmit_stopped(dev_queue)) 4771 continue; 4772 4773 if (mlx5e_reporter_tx_timeout(sq)) 4774 /* break if tried to reopened channels */ 4775 break; 4776 } 4777 4778 unlock: 4779 rtnl_unlock(); 4780 } 4781 4782 static void mlx5e_tx_timeout(struct net_device *dev, unsigned int txqueue) 4783 { 4784 struct mlx5e_priv *priv = netdev_priv(dev); 4785 4786 netdev_err(dev, "TX timeout detected\n"); 4787 queue_work(priv->wq, &priv->tx_timeout_work); 4788 } 4789 4790 static int mlx5e_xdp_allowed(struct net_device *netdev, struct mlx5_core_dev *mdev, 4791 struct mlx5e_params *params) 4792 { 4793 if (params->packet_merge.type != MLX5E_PACKET_MERGE_NONE) { 4794 netdev_warn(netdev, "can't set XDP while HW-GRO/LRO is on, disable them first\n"); 4795 return -EINVAL; 4796 } 4797 4798 if (!mlx5e_params_validate_xdp(netdev, mdev, params)) 4799 return -EINVAL; 4800 4801 return 0; 4802 } 4803 4804 static void mlx5e_rq_replace_xdp_prog(struct mlx5e_rq *rq, struct bpf_prog *prog) 4805 { 4806 struct bpf_prog *old_prog; 4807 4808 old_prog = rcu_replace_pointer(rq->xdp_prog, prog, 4809 lockdep_is_held(&rq->priv->state_lock)); 4810 if (old_prog) 4811 bpf_prog_put(old_prog); 4812 } 4813 4814 static int mlx5e_xdp_set(struct net_device *netdev, struct bpf_prog *prog) 4815 { 4816 struct mlx5e_priv *priv = netdev_priv(netdev); 4817 struct mlx5e_params new_params; 4818 struct bpf_prog *old_prog; 4819 int err = 0; 4820 bool reset; 4821 int i; 4822 4823 mutex_lock(&priv->state_lock); 4824 4825 new_params = priv->channels.params; 4826 new_params.xdp_prog = prog; 4827 4828 if (prog) { 4829 err = mlx5e_xdp_allowed(netdev, priv->mdev, &new_params); 4830 if (err) 4831 goto unlock; 4832 } 4833 4834 /* no need for full reset when exchanging programs */ 4835 reset = (!priv->channels.params.xdp_prog || !prog); 4836 4837 old_prog = priv->channels.params.xdp_prog; 4838 4839 err = mlx5e_safe_switch_params(priv, &new_params, NULL, NULL, reset); 4840 if (err) 4841 goto unlock; 4842 4843 if (old_prog) 4844 bpf_prog_put(old_prog); 4845 4846 if (!test_bit(MLX5E_STATE_OPENED, &priv->state) || reset) 4847 goto unlock; 4848 4849 /* exchanging programs w/o reset, we update ref counts on behalf 4850 * of the channels RQs here. 4851 */ 4852 bpf_prog_add(prog, priv->channels.num); 4853 for (i = 0; i < priv->channels.num; i++) { 4854 struct mlx5e_channel *c = priv->channels.c[i]; 4855 4856 mlx5e_rq_replace_xdp_prog(&c->rq, prog); 4857 if (test_bit(MLX5E_CHANNEL_STATE_XSK, c->state)) { 4858 bpf_prog_inc(prog); 4859 mlx5e_rq_replace_xdp_prog(&c->xskrq, prog); 4860 } 4861 } 4862 4863 unlock: 4864 mutex_unlock(&priv->state_lock); 4865 4866 /* Need to fix some features. */ 4867 if (!err) 4868 netdev_update_features(netdev); 4869 4870 return err; 4871 } 4872 4873 static int mlx5e_xdp(struct net_device *dev, struct netdev_bpf *xdp) 4874 { 4875 switch (xdp->command) { 4876 case XDP_SETUP_PROG: 4877 return mlx5e_xdp_set(dev, xdp->prog); 4878 case XDP_SETUP_XSK_POOL: 4879 return mlx5e_xsk_setup_pool(dev, xdp->xsk.pool, 4880 xdp->xsk.queue_id); 4881 default: 4882 return -EINVAL; 4883 } 4884 } 4885 4886 #ifdef CONFIG_MLX5_ESWITCH 4887 static int mlx5e_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq, 4888 struct net_device *dev, u32 filter_mask, 4889 int nlflags) 4890 { 4891 struct mlx5e_priv *priv = netdev_priv(dev); 4892 struct mlx5_core_dev *mdev = priv->mdev; 4893 u8 mode, setting; 4894 int err; 4895 4896 err = mlx5_eswitch_get_vepa(mdev->priv.eswitch, &setting); 4897 if (err) 4898 return err; 4899 mode = setting ? BRIDGE_MODE_VEPA : BRIDGE_MODE_VEB; 4900 return ndo_dflt_bridge_getlink(skb, pid, seq, dev, 4901 mode, 4902 0, 0, nlflags, filter_mask, NULL); 4903 } 4904 4905 static int mlx5e_bridge_setlink(struct net_device *dev, struct nlmsghdr *nlh, 4906 u16 flags, struct netlink_ext_ack *extack) 4907 { 4908 struct mlx5e_priv *priv = netdev_priv(dev); 4909 struct mlx5_core_dev *mdev = priv->mdev; 4910 struct nlattr *attr, *br_spec; 4911 u16 mode = BRIDGE_MODE_UNDEF; 4912 u8 setting; 4913 int rem; 4914 4915 br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); 4916 if (!br_spec) 4917 return -EINVAL; 4918 4919 nla_for_each_nested(attr, br_spec, rem) { 4920 if (nla_type(attr) != IFLA_BRIDGE_MODE) 4921 continue; 4922 4923 mode = nla_get_u16(attr); 4924 if (mode > BRIDGE_MODE_VEPA) 4925 return -EINVAL; 4926 4927 break; 4928 } 4929 4930 if (mode == BRIDGE_MODE_UNDEF) 4931 return -EINVAL; 4932 4933 setting = (mode == BRIDGE_MODE_VEPA) ? 1 : 0; 4934 return mlx5_eswitch_set_vepa(mdev->priv.eswitch, setting); 4935 } 4936 #endif 4937 4938 const struct net_device_ops mlx5e_netdev_ops = { 4939 .ndo_open = mlx5e_open, 4940 .ndo_stop = mlx5e_close, 4941 .ndo_start_xmit = mlx5e_xmit, 4942 .ndo_setup_tc = mlx5e_setup_tc, 4943 .ndo_select_queue = mlx5e_select_queue, 4944 .ndo_get_stats64 = mlx5e_get_stats, 4945 .ndo_set_rx_mode = mlx5e_set_rx_mode, 4946 .ndo_set_mac_address = mlx5e_set_mac, 4947 .ndo_vlan_rx_add_vid = mlx5e_vlan_rx_add_vid, 4948 .ndo_vlan_rx_kill_vid = mlx5e_vlan_rx_kill_vid, 4949 .ndo_set_features = mlx5e_set_features, 4950 .ndo_fix_features = mlx5e_fix_features, 4951 .ndo_change_mtu = mlx5e_change_nic_mtu, 4952 .ndo_eth_ioctl = mlx5e_ioctl, 4953 .ndo_set_tx_maxrate = mlx5e_set_tx_maxrate, 4954 .ndo_features_check = mlx5e_features_check, 4955 .ndo_tx_timeout = mlx5e_tx_timeout, 4956 .ndo_bpf = mlx5e_xdp, 4957 .ndo_xdp_xmit = mlx5e_xdp_xmit, 4958 .ndo_xsk_wakeup = mlx5e_xsk_wakeup, 4959 #ifdef CONFIG_MLX5_EN_ARFS 4960 .ndo_rx_flow_steer = mlx5e_rx_flow_steer, 4961 #endif 4962 #ifdef CONFIG_MLX5_ESWITCH 4963 .ndo_bridge_setlink = mlx5e_bridge_setlink, 4964 .ndo_bridge_getlink = mlx5e_bridge_getlink, 4965 4966 /* SRIOV E-Switch NDOs */ 4967 .ndo_set_vf_mac = mlx5e_set_vf_mac, 4968 .ndo_set_vf_vlan = mlx5e_set_vf_vlan, 4969 .ndo_set_vf_spoofchk = mlx5e_set_vf_spoofchk, 4970 .ndo_set_vf_trust = mlx5e_set_vf_trust, 4971 .ndo_set_vf_rate = mlx5e_set_vf_rate, 4972 .ndo_get_vf_config = mlx5e_get_vf_config, 4973 .ndo_set_vf_link_state = mlx5e_set_vf_link_state, 4974 .ndo_get_vf_stats = mlx5e_get_vf_stats, 4975 .ndo_has_offload_stats = mlx5e_has_offload_stats, 4976 .ndo_get_offload_stats = mlx5e_get_offload_stats, 4977 #endif 4978 }; 4979 4980 static u32 mlx5e_choose_lro_timeout(struct mlx5_core_dev *mdev, u32 wanted_timeout) 4981 { 4982 int i; 4983 4984 /* The supported periods are organized in ascending order */ 4985 for (i = 0; i < MLX5E_LRO_TIMEOUT_ARR_SIZE - 1; i++) 4986 if (MLX5_CAP_ETH(mdev, lro_timer_supported_periods[i]) >= wanted_timeout) 4987 break; 4988 4989 return MLX5_CAP_ETH(mdev, lro_timer_supported_periods[i]); 4990 } 4991 4992 void mlx5e_build_nic_params(struct mlx5e_priv *priv, struct mlx5e_xsk *xsk, u16 mtu) 4993 { 4994 struct mlx5e_params *params = &priv->channels.params; 4995 struct mlx5_core_dev *mdev = priv->mdev; 4996 u8 rx_cq_period_mode; 4997 4998 params->sw_mtu = mtu; 4999 params->hard_mtu = MLX5E_ETH_HARD_MTU; 5000 params->num_channels = min_t(unsigned int, MLX5E_MAX_NUM_CHANNELS / 2, 5001 priv->max_nch); 5002 mlx5e_params_mqprio_reset(params); 5003 5004 /* SQ */ 5005 params->log_sq_size = is_kdump_kernel() ? 5006 MLX5E_PARAMS_MINIMUM_LOG_SQ_SIZE : 5007 MLX5E_PARAMS_DEFAULT_LOG_SQ_SIZE; 5008 MLX5E_SET_PFLAG(params, MLX5E_PFLAG_SKB_TX_MPWQE, mlx5e_tx_mpwqe_supported(mdev)); 5009 5010 /* XDP SQ */ 5011 MLX5E_SET_PFLAG(params, MLX5E_PFLAG_XDP_TX_MPWQE, mlx5e_tx_mpwqe_supported(mdev)); 5012 5013 /* set CQE compression */ 5014 params->rx_cqe_compress_def = false; 5015 if (MLX5_CAP_GEN(mdev, cqe_compression) && 5016 MLX5_CAP_GEN(mdev, vport_group_manager)) 5017 params->rx_cqe_compress_def = slow_pci_heuristic(mdev); 5018 5019 MLX5E_SET_PFLAG(params, MLX5E_PFLAG_RX_CQE_COMPRESS, params->rx_cqe_compress_def); 5020 MLX5E_SET_PFLAG(params, MLX5E_PFLAG_RX_NO_CSUM_COMPLETE, false); 5021 5022 /* RQ */ 5023 mlx5e_build_rq_params(mdev, params); 5024 5025 params->terminate_lkey_be = mlx5_core_get_terminate_scatter_list_mkey(mdev); 5026 5027 params->packet_merge.timeout = mlx5e_choose_lro_timeout(mdev, MLX5E_DEFAULT_LRO_TIMEOUT); 5028 5029 /* CQ moderation params */ 5030 rx_cq_period_mode = MLX5_CAP_GEN(mdev, cq_period_start_from_cqe) ? 5031 MLX5_CQ_PERIOD_MODE_START_FROM_CQE : 5032 MLX5_CQ_PERIOD_MODE_START_FROM_EQE; 5033 params->rx_dim_enabled = MLX5_CAP_GEN(mdev, cq_moderation); 5034 params->tx_dim_enabled = MLX5_CAP_GEN(mdev, cq_moderation); 5035 mlx5e_set_rx_cq_mode_params(params, rx_cq_period_mode); 5036 mlx5e_set_tx_cq_mode_params(params, MLX5_CQ_PERIOD_MODE_START_FROM_EQE); 5037 5038 /* TX inline */ 5039 mlx5_query_min_inline(mdev, ¶ms->tx_min_inline_mode); 5040 5041 /* AF_XDP */ 5042 params->xsk = xsk; 5043 5044 /* Do not update netdev->features directly in here 5045 * on mlx5e_attach_netdev() we will call mlx5e_update_features() 5046 * To update netdev->features please modify mlx5e_fix_features() 5047 */ 5048 } 5049 5050 static void mlx5e_set_netdev_dev_addr(struct net_device *netdev) 5051 { 5052 struct mlx5e_priv *priv = netdev_priv(netdev); 5053 u8 addr[ETH_ALEN]; 5054 5055 mlx5_query_mac_address(priv->mdev, addr); 5056 if (is_zero_ether_addr(addr) && 5057 !MLX5_CAP_GEN(priv->mdev, vport_group_manager)) { 5058 eth_hw_addr_random(netdev); 5059 mlx5_core_info(priv->mdev, "Assigned random MAC address %pM\n", netdev->dev_addr); 5060 return; 5061 } 5062 5063 eth_hw_addr_set(netdev, addr); 5064 } 5065 5066 static int mlx5e_vxlan_set_port(struct net_device *netdev, unsigned int table, 5067 unsigned int entry, struct udp_tunnel_info *ti) 5068 { 5069 struct mlx5e_priv *priv = netdev_priv(netdev); 5070 5071 return mlx5_vxlan_add_port(priv->mdev->vxlan, ntohs(ti->port)); 5072 } 5073 5074 static int mlx5e_vxlan_unset_port(struct net_device *netdev, unsigned int table, 5075 unsigned int entry, struct udp_tunnel_info *ti) 5076 { 5077 struct mlx5e_priv *priv = netdev_priv(netdev); 5078 5079 return mlx5_vxlan_del_port(priv->mdev->vxlan, ntohs(ti->port)); 5080 } 5081 5082 void mlx5e_vxlan_set_netdev_info(struct mlx5e_priv *priv) 5083 { 5084 if (!mlx5_vxlan_allowed(priv->mdev->vxlan)) 5085 return; 5086 5087 priv->nic_info.set_port = mlx5e_vxlan_set_port; 5088 priv->nic_info.unset_port = mlx5e_vxlan_unset_port; 5089 priv->nic_info.flags = UDP_TUNNEL_NIC_INFO_MAY_SLEEP | 5090 UDP_TUNNEL_NIC_INFO_STATIC_IANA_VXLAN; 5091 priv->nic_info.tables[0].tunnel_types = UDP_TUNNEL_TYPE_VXLAN; 5092 /* Don't count the space hard-coded to the IANA port */ 5093 priv->nic_info.tables[0].n_entries = 5094 mlx5_vxlan_max_udp_ports(priv->mdev) - 1; 5095 5096 priv->netdev->udp_tunnel_nic_info = &priv->nic_info; 5097 } 5098 5099 static bool mlx5e_tunnel_any_tx_proto_supported(struct mlx5_core_dev *mdev) 5100 { 5101 int tt; 5102 5103 for (tt = 0; tt < MLX5_NUM_TUNNEL_TT; tt++) { 5104 if (mlx5e_tunnel_proto_supported_tx(mdev, mlx5_get_proto_by_tunnel_type(tt))) 5105 return true; 5106 } 5107 return (mlx5_vxlan_allowed(mdev->vxlan) || mlx5_geneve_tx_allowed(mdev)); 5108 } 5109 5110 static void mlx5e_build_nic_netdev(struct net_device *netdev) 5111 { 5112 struct mlx5e_priv *priv = netdev_priv(netdev); 5113 struct mlx5_core_dev *mdev = priv->mdev; 5114 bool fcs_supported; 5115 bool fcs_enabled; 5116 5117 SET_NETDEV_DEV(netdev, mdev->device); 5118 5119 netdev->netdev_ops = &mlx5e_netdev_ops; 5120 netdev->xdp_metadata_ops = &mlx5e_xdp_metadata_ops; 5121 5122 mlx5e_dcbnl_build_netdev(netdev); 5123 5124 netdev->watchdog_timeo = 15 * HZ; 5125 5126 netdev->ethtool_ops = &mlx5e_ethtool_ops; 5127 5128 netdev->vlan_features |= NETIF_F_SG; 5129 netdev->vlan_features |= NETIF_F_HW_CSUM; 5130 netdev->vlan_features |= NETIF_F_HW_MACSEC; 5131 netdev->vlan_features |= NETIF_F_GRO; 5132 netdev->vlan_features |= NETIF_F_TSO; 5133 netdev->vlan_features |= NETIF_F_TSO6; 5134 netdev->vlan_features |= NETIF_F_RXCSUM; 5135 netdev->vlan_features |= NETIF_F_RXHASH; 5136 netdev->vlan_features |= NETIF_F_GSO_PARTIAL; 5137 5138 netdev->mpls_features |= NETIF_F_SG; 5139 netdev->mpls_features |= NETIF_F_HW_CSUM; 5140 netdev->mpls_features |= NETIF_F_TSO; 5141 netdev->mpls_features |= NETIF_F_TSO6; 5142 5143 netdev->hw_enc_features |= NETIF_F_HW_VLAN_CTAG_TX; 5144 netdev->hw_enc_features |= NETIF_F_HW_VLAN_CTAG_RX; 5145 5146 /* Tunneled LRO is not supported in the driver, and the same RQs are 5147 * shared between inner and outer TIRs, so the driver can't disable LRO 5148 * for inner TIRs while having it enabled for outer TIRs. Due to this, 5149 * block LRO altogether if the firmware declares tunneled LRO support. 5150 */ 5151 if (!!MLX5_CAP_ETH(mdev, lro_cap) && 5152 !MLX5_CAP_ETH(mdev, tunnel_lro_vxlan) && 5153 !MLX5_CAP_ETH(mdev, tunnel_lro_gre) && 5154 mlx5e_check_fragmented_striding_rq_cap(mdev, PAGE_SHIFT, 5155 MLX5E_MPWRQ_UMR_MODE_ALIGNED)) 5156 netdev->vlan_features |= NETIF_F_LRO; 5157 5158 netdev->hw_features = netdev->vlan_features; 5159 netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_TX; 5160 netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_RX; 5161 netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_FILTER; 5162 netdev->hw_features |= NETIF_F_HW_VLAN_STAG_TX; 5163 5164 if (mlx5e_tunnel_any_tx_proto_supported(mdev)) { 5165 netdev->hw_enc_features |= NETIF_F_HW_CSUM; 5166 netdev->hw_enc_features |= NETIF_F_TSO; 5167 netdev->hw_enc_features |= NETIF_F_TSO6; 5168 netdev->hw_enc_features |= NETIF_F_GSO_PARTIAL; 5169 } 5170 5171 if (mlx5_vxlan_allowed(mdev->vxlan) || mlx5_geneve_tx_allowed(mdev)) { 5172 netdev->hw_features |= NETIF_F_GSO_UDP_TUNNEL | 5173 NETIF_F_GSO_UDP_TUNNEL_CSUM; 5174 netdev->hw_enc_features |= NETIF_F_GSO_UDP_TUNNEL | 5175 NETIF_F_GSO_UDP_TUNNEL_CSUM; 5176 netdev->gso_partial_features = NETIF_F_GSO_UDP_TUNNEL_CSUM; 5177 netdev->vlan_features |= NETIF_F_GSO_UDP_TUNNEL | 5178 NETIF_F_GSO_UDP_TUNNEL_CSUM; 5179 } 5180 5181 if (mlx5e_tunnel_proto_supported_tx(mdev, IPPROTO_GRE)) { 5182 netdev->hw_features |= NETIF_F_GSO_GRE | 5183 NETIF_F_GSO_GRE_CSUM; 5184 netdev->hw_enc_features |= NETIF_F_GSO_GRE | 5185 NETIF_F_GSO_GRE_CSUM; 5186 netdev->gso_partial_features |= NETIF_F_GSO_GRE | 5187 NETIF_F_GSO_GRE_CSUM; 5188 } 5189 5190 if (mlx5e_tunnel_proto_supported_tx(mdev, IPPROTO_IPIP)) { 5191 netdev->hw_features |= NETIF_F_GSO_IPXIP4 | 5192 NETIF_F_GSO_IPXIP6; 5193 netdev->hw_enc_features |= NETIF_F_GSO_IPXIP4 | 5194 NETIF_F_GSO_IPXIP6; 5195 netdev->gso_partial_features |= NETIF_F_GSO_IPXIP4 | 5196 NETIF_F_GSO_IPXIP6; 5197 } 5198 5199 netdev->gso_partial_features |= NETIF_F_GSO_UDP_L4; 5200 netdev->hw_features |= NETIF_F_GSO_UDP_L4; 5201 netdev->features |= NETIF_F_GSO_UDP_L4; 5202 5203 mlx5_query_port_fcs(mdev, &fcs_supported, &fcs_enabled); 5204 5205 if (fcs_supported) 5206 netdev->hw_features |= NETIF_F_RXALL; 5207 5208 if (MLX5_CAP_ETH(mdev, scatter_fcs)) 5209 netdev->hw_features |= NETIF_F_RXFCS; 5210 5211 if (mlx5_qos_is_supported(mdev)) 5212 netdev->hw_features |= NETIF_F_HW_TC; 5213 5214 netdev->features = netdev->hw_features; 5215 5216 /* Defaults */ 5217 if (fcs_enabled) 5218 netdev->features &= ~NETIF_F_RXALL; 5219 netdev->features &= ~NETIF_F_LRO; 5220 netdev->features &= ~NETIF_F_GRO_HW; 5221 netdev->features &= ~NETIF_F_RXFCS; 5222 5223 #define FT_CAP(f) MLX5_CAP_FLOWTABLE(mdev, flow_table_properties_nic_receive.f) 5224 if (FT_CAP(flow_modify_en) && 5225 FT_CAP(modify_root) && 5226 FT_CAP(identified_miss_table_mode) && 5227 FT_CAP(flow_table_modify)) { 5228 #if IS_ENABLED(CONFIG_MLX5_CLS_ACT) 5229 netdev->hw_features |= NETIF_F_HW_TC; 5230 #endif 5231 #ifdef CONFIG_MLX5_EN_ARFS 5232 netdev->hw_features |= NETIF_F_NTUPLE; 5233 #endif 5234 } 5235 5236 netdev->features |= NETIF_F_HIGHDMA; 5237 netdev->features |= NETIF_F_HW_VLAN_STAG_FILTER; 5238 5239 netdev->priv_flags |= IFF_UNICAST_FLT; 5240 5241 netif_set_tso_max_size(netdev, GSO_MAX_SIZE); 5242 mlx5e_set_xdp_feature(netdev); 5243 mlx5e_set_netdev_dev_addr(netdev); 5244 mlx5e_macsec_build_netdev(priv); 5245 mlx5e_ipsec_build_netdev(priv); 5246 mlx5e_ktls_build_netdev(priv); 5247 } 5248 5249 void mlx5e_create_q_counters(struct mlx5e_priv *priv) 5250 { 5251 u32 out[MLX5_ST_SZ_DW(alloc_q_counter_out)] = {}; 5252 u32 in[MLX5_ST_SZ_DW(alloc_q_counter_in)] = {}; 5253 struct mlx5_core_dev *mdev = priv->mdev; 5254 int err; 5255 5256 MLX5_SET(alloc_q_counter_in, in, opcode, MLX5_CMD_OP_ALLOC_Q_COUNTER); 5257 err = mlx5_cmd_exec_inout(mdev, alloc_q_counter, in, out); 5258 if (!err) 5259 priv->q_counter = 5260 MLX5_GET(alloc_q_counter_out, out, counter_set_id); 5261 5262 err = mlx5_cmd_exec_inout(mdev, alloc_q_counter, in, out); 5263 if (!err) 5264 priv->drop_rq_q_counter = 5265 MLX5_GET(alloc_q_counter_out, out, counter_set_id); 5266 } 5267 5268 void mlx5e_destroy_q_counters(struct mlx5e_priv *priv) 5269 { 5270 u32 in[MLX5_ST_SZ_DW(dealloc_q_counter_in)] = {}; 5271 5272 MLX5_SET(dealloc_q_counter_in, in, opcode, 5273 MLX5_CMD_OP_DEALLOC_Q_COUNTER); 5274 if (priv->q_counter) { 5275 MLX5_SET(dealloc_q_counter_in, in, counter_set_id, 5276 priv->q_counter); 5277 mlx5_cmd_exec_in(priv->mdev, dealloc_q_counter, in); 5278 } 5279 5280 if (priv->drop_rq_q_counter) { 5281 MLX5_SET(dealloc_q_counter_in, in, counter_set_id, 5282 priv->drop_rq_q_counter); 5283 mlx5_cmd_exec_in(priv->mdev, dealloc_q_counter, in); 5284 } 5285 } 5286 5287 static int mlx5e_nic_init(struct mlx5_core_dev *mdev, 5288 struct net_device *netdev) 5289 { 5290 const bool take_rtnl = netdev->reg_state == NETREG_REGISTERED; 5291 struct mlx5e_priv *priv = netdev_priv(netdev); 5292 struct mlx5e_flow_steering *fs; 5293 int err; 5294 5295 mlx5e_build_nic_params(priv, &priv->xsk, netdev->mtu); 5296 mlx5e_vxlan_set_netdev_info(priv); 5297 5298 mlx5e_timestamp_init(priv); 5299 5300 priv->dfs_root = debugfs_create_dir("nic", 5301 mlx5_debugfs_get_dev_root(mdev)); 5302 5303 fs = mlx5e_fs_init(priv->profile, mdev, 5304 !test_bit(MLX5E_STATE_DESTROYING, &priv->state), 5305 priv->dfs_root); 5306 if (!fs) { 5307 err = -ENOMEM; 5308 mlx5_core_err(mdev, "FS initialization failed, %d\n", err); 5309 debugfs_remove_recursive(priv->dfs_root); 5310 return err; 5311 } 5312 priv->fs = fs; 5313 5314 err = mlx5e_ktls_init(priv); 5315 if (err) 5316 mlx5_core_err(mdev, "TLS initialization failed, %d\n", err); 5317 5318 mlx5e_health_create_reporters(priv); 5319 5320 /* If netdev is already registered (e.g. move from uplink to nic profile), 5321 * RTNL lock must be held before triggering netdev notifiers. 5322 */ 5323 if (take_rtnl) 5324 rtnl_lock(); 5325 5326 /* update XDP supported features */ 5327 mlx5e_set_xdp_feature(netdev); 5328 5329 if (take_rtnl) 5330 rtnl_unlock(); 5331 5332 return 0; 5333 } 5334 5335 static void mlx5e_nic_cleanup(struct mlx5e_priv *priv) 5336 { 5337 mlx5e_health_destroy_reporters(priv); 5338 mlx5e_ktls_cleanup(priv); 5339 mlx5e_fs_cleanup(priv->fs); 5340 debugfs_remove_recursive(priv->dfs_root); 5341 priv->fs = NULL; 5342 } 5343 5344 static int mlx5e_init_nic_rx(struct mlx5e_priv *priv) 5345 { 5346 struct mlx5_core_dev *mdev = priv->mdev; 5347 enum mlx5e_rx_res_features features; 5348 int err; 5349 5350 priv->rx_res = mlx5e_rx_res_alloc(); 5351 if (!priv->rx_res) 5352 return -ENOMEM; 5353 5354 mlx5e_create_q_counters(priv); 5355 5356 err = mlx5e_open_drop_rq(priv, &priv->drop_rq); 5357 if (err) { 5358 mlx5_core_err(mdev, "open drop rq failed, %d\n", err); 5359 goto err_destroy_q_counters; 5360 } 5361 5362 features = MLX5E_RX_RES_FEATURE_PTP; 5363 if (mlx5_tunnel_inner_ft_supported(mdev)) 5364 features |= MLX5E_RX_RES_FEATURE_INNER_FT; 5365 err = mlx5e_rx_res_init(priv->rx_res, priv->mdev, features, 5366 priv->max_nch, priv->drop_rq.rqn, 5367 &priv->channels.params.packet_merge, 5368 priv->channels.params.num_channels); 5369 if (err) 5370 goto err_close_drop_rq; 5371 5372 err = mlx5e_create_flow_steering(priv->fs, priv->rx_res, priv->profile, 5373 priv->netdev); 5374 if (err) { 5375 mlx5_core_warn(mdev, "create flow steering failed, %d\n", err); 5376 goto err_destroy_rx_res; 5377 } 5378 5379 err = mlx5e_tc_nic_init(priv); 5380 if (err) 5381 goto err_destroy_flow_steering; 5382 5383 err = mlx5e_accel_init_rx(priv); 5384 if (err) 5385 goto err_tc_nic_cleanup; 5386 5387 #ifdef CONFIG_MLX5_EN_ARFS 5388 priv->netdev->rx_cpu_rmap = mlx5_eq_table_get_rmap(priv->mdev); 5389 #endif 5390 5391 return 0; 5392 5393 err_tc_nic_cleanup: 5394 mlx5e_tc_nic_cleanup(priv); 5395 err_destroy_flow_steering: 5396 mlx5e_destroy_flow_steering(priv->fs, !!(priv->netdev->hw_features & NETIF_F_NTUPLE), 5397 priv->profile); 5398 err_destroy_rx_res: 5399 mlx5e_rx_res_destroy(priv->rx_res); 5400 err_close_drop_rq: 5401 mlx5e_close_drop_rq(&priv->drop_rq); 5402 err_destroy_q_counters: 5403 mlx5e_destroy_q_counters(priv); 5404 mlx5e_rx_res_free(priv->rx_res); 5405 priv->rx_res = NULL; 5406 return err; 5407 } 5408 5409 static void mlx5e_cleanup_nic_rx(struct mlx5e_priv *priv) 5410 { 5411 mlx5e_accel_cleanup_rx(priv); 5412 mlx5e_tc_nic_cleanup(priv); 5413 mlx5e_destroy_flow_steering(priv->fs, !!(priv->netdev->hw_features & NETIF_F_NTUPLE), 5414 priv->profile); 5415 mlx5e_rx_res_destroy(priv->rx_res); 5416 mlx5e_close_drop_rq(&priv->drop_rq); 5417 mlx5e_destroy_q_counters(priv); 5418 mlx5e_rx_res_free(priv->rx_res); 5419 priv->rx_res = NULL; 5420 } 5421 5422 static void mlx5e_set_mqprio_rl(struct mlx5e_priv *priv) 5423 { 5424 struct mlx5e_params *params; 5425 struct mlx5e_mqprio_rl *rl; 5426 5427 params = &priv->channels.params; 5428 if (params->mqprio.mode != TC_MQPRIO_MODE_CHANNEL) 5429 return; 5430 5431 rl = mlx5e_mqprio_rl_create(priv->mdev, params->mqprio.num_tc, 5432 params->mqprio.channel.max_rate); 5433 if (IS_ERR(rl)) 5434 rl = NULL; 5435 priv->mqprio_rl = rl; 5436 mlx5e_mqprio_rl_update_params(params, rl); 5437 } 5438 5439 static int mlx5e_init_nic_tx(struct mlx5e_priv *priv) 5440 { 5441 int err; 5442 5443 err = mlx5e_create_tises(priv); 5444 if (err) { 5445 mlx5_core_warn(priv->mdev, "create tises failed, %d\n", err); 5446 return err; 5447 } 5448 5449 err = mlx5e_accel_init_tx(priv); 5450 if (err) 5451 goto err_destroy_tises; 5452 5453 mlx5e_set_mqprio_rl(priv); 5454 mlx5e_dcbnl_initialize(priv); 5455 return 0; 5456 5457 err_destroy_tises: 5458 mlx5e_destroy_tises(priv); 5459 return err; 5460 } 5461 5462 static void mlx5e_nic_enable(struct mlx5e_priv *priv) 5463 { 5464 struct net_device *netdev = priv->netdev; 5465 struct mlx5_core_dev *mdev = priv->mdev; 5466 int err; 5467 5468 mlx5e_fs_init_l2_addr(priv->fs, netdev); 5469 mlx5e_ipsec_init(priv); 5470 5471 err = mlx5e_macsec_init(priv); 5472 if (err) 5473 mlx5_core_err(mdev, "MACsec initialization failed, %d\n", err); 5474 5475 /* Marking the link as currently not needed by the Driver */ 5476 if (!netif_running(netdev)) 5477 mlx5e_modify_admin_state(mdev, MLX5_PORT_DOWN); 5478 5479 mlx5e_set_netdev_mtu_boundaries(priv); 5480 mlx5e_set_dev_port_mtu(priv); 5481 5482 mlx5_lag_add_netdev(mdev, netdev); 5483 5484 mlx5e_enable_async_events(priv); 5485 mlx5e_enable_blocking_events(priv); 5486 if (mlx5e_monitor_counter_supported(priv)) 5487 mlx5e_monitor_counter_init(priv); 5488 5489 mlx5e_hv_vhca_stats_create(priv); 5490 if (netdev->reg_state != NETREG_REGISTERED) 5491 return; 5492 mlx5e_dcbnl_init_app(priv); 5493 5494 mlx5e_nic_set_rx_mode(priv); 5495 5496 rtnl_lock(); 5497 if (netif_running(netdev)) 5498 mlx5e_open(netdev); 5499 udp_tunnel_nic_reset_ntf(priv->netdev); 5500 netif_device_attach(netdev); 5501 rtnl_unlock(); 5502 } 5503 5504 static void mlx5e_nic_disable(struct mlx5e_priv *priv) 5505 { 5506 struct mlx5_core_dev *mdev = priv->mdev; 5507 5508 if (priv->netdev->reg_state == NETREG_REGISTERED) 5509 mlx5e_dcbnl_delete_app(priv); 5510 5511 rtnl_lock(); 5512 if (netif_running(priv->netdev)) 5513 mlx5e_close(priv->netdev); 5514 netif_device_detach(priv->netdev); 5515 rtnl_unlock(); 5516 5517 mlx5e_nic_set_rx_mode(priv); 5518 5519 mlx5e_hv_vhca_stats_destroy(priv); 5520 if (mlx5e_monitor_counter_supported(priv)) 5521 mlx5e_monitor_counter_cleanup(priv); 5522 5523 mlx5e_disable_blocking_events(priv); 5524 if (priv->en_trap) { 5525 mlx5e_deactivate_trap(priv); 5526 mlx5e_close_trap(priv->en_trap); 5527 priv->en_trap = NULL; 5528 } 5529 mlx5e_disable_async_events(priv); 5530 mlx5_lag_remove_netdev(mdev, priv->netdev); 5531 mlx5_vxlan_reset_to_default(mdev->vxlan); 5532 mlx5e_macsec_cleanup(priv); 5533 mlx5e_ipsec_cleanup(priv); 5534 } 5535 5536 int mlx5e_update_nic_rx(struct mlx5e_priv *priv) 5537 { 5538 return mlx5e_refresh_tirs(priv, false, false); 5539 } 5540 5541 static const struct mlx5e_profile mlx5e_nic_profile = { 5542 .init = mlx5e_nic_init, 5543 .cleanup = mlx5e_nic_cleanup, 5544 .init_rx = mlx5e_init_nic_rx, 5545 .cleanup_rx = mlx5e_cleanup_nic_rx, 5546 .init_tx = mlx5e_init_nic_tx, 5547 .cleanup_tx = mlx5e_cleanup_nic_tx, 5548 .enable = mlx5e_nic_enable, 5549 .disable = mlx5e_nic_disable, 5550 .update_rx = mlx5e_update_nic_rx, 5551 .update_stats = mlx5e_stats_update_ndo_stats, 5552 .update_carrier = mlx5e_update_carrier, 5553 .rx_handlers = &mlx5e_rx_handlers_nic, 5554 .max_tc = MLX5E_MAX_NUM_TC, 5555 .stats_grps = mlx5e_nic_stats_grps, 5556 .stats_grps_num = mlx5e_nic_stats_grps_num, 5557 .features = BIT(MLX5E_PROFILE_FEATURE_PTP_RX) | 5558 BIT(MLX5E_PROFILE_FEATURE_PTP_TX) | 5559 BIT(MLX5E_PROFILE_FEATURE_QOS_HTB) | 5560 BIT(MLX5E_PROFILE_FEATURE_FS_VLAN) | 5561 BIT(MLX5E_PROFILE_FEATURE_FS_TC), 5562 }; 5563 5564 static int mlx5e_profile_max_num_channels(struct mlx5_core_dev *mdev, 5565 const struct mlx5e_profile *profile) 5566 { 5567 int nch; 5568 5569 nch = mlx5e_get_max_num_channels(mdev); 5570 5571 if (profile->max_nch_limit) 5572 nch = min_t(int, nch, profile->max_nch_limit(mdev)); 5573 return nch; 5574 } 5575 5576 static unsigned int 5577 mlx5e_calc_max_nch(struct mlx5_core_dev *mdev, struct net_device *netdev, 5578 const struct mlx5e_profile *profile) 5579 5580 { 5581 unsigned int max_nch, tmp; 5582 5583 /* core resources */ 5584 max_nch = mlx5e_profile_max_num_channels(mdev, profile); 5585 5586 /* netdev rx queues */ 5587 max_nch = min_t(unsigned int, max_nch, netdev->num_rx_queues); 5588 5589 /* netdev tx queues */ 5590 tmp = netdev->num_tx_queues; 5591 if (mlx5_qos_is_supported(mdev)) 5592 tmp -= mlx5e_qos_max_leaf_nodes(mdev); 5593 if (MLX5_CAP_GEN(mdev, ts_cqe_to_dest_cqn)) 5594 tmp -= profile->max_tc; 5595 tmp = tmp / profile->max_tc; 5596 max_nch = min_t(unsigned int, max_nch, tmp); 5597 5598 return max_nch; 5599 } 5600 5601 int mlx5e_get_pf_num_tirs(struct mlx5_core_dev *mdev) 5602 { 5603 /* Indirect TIRS: 2 sets of TTCs (inner + outer steering) 5604 * and 1 set of direct TIRS 5605 */ 5606 return 2 * MLX5E_NUM_INDIR_TIRS 5607 + mlx5e_profile_max_num_channels(mdev, &mlx5e_nic_profile); 5608 } 5609 5610 void mlx5e_set_rx_mode_work(struct work_struct *work) 5611 { 5612 struct mlx5e_priv *priv = container_of(work, struct mlx5e_priv, 5613 set_rx_mode_work); 5614 5615 return mlx5e_fs_set_rx_mode_work(priv->fs, priv->netdev); 5616 } 5617 5618 /* mlx5e generic netdev management API (move to en_common.c) */ 5619 int mlx5e_priv_init(struct mlx5e_priv *priv, 5620 const struct mlx5e_profile *profile, 5621 struct net_device *netdev, 5622 struct mlx5_core_dev *mdev) 5623 { 5624 int nch, num_txqs, node; 5625 int err; 5626 5627 num_txqs = netdev->num_tx_queues; 5628 nch = mlx5e_calc_max_nch(mdev, netdev, profile); 5629 node = dev_to_node(mlx5_core_dma_dev(mdev)); 5630 5631 /* priv init */ 5632 priv->mdev = mdev; 5633 priv->netdev = netdev; 5634 priv->max_nch = nch; 5635 priv->max_opened_tc = 1; 5636 5637 if (!alloc_cpumask_var(&priv->scratchpad.cpumask, GFP_KERNEL)) 5638 return -ENOMEM; 5639 5640 mutex_init(&priv->state_lock); 5641 5642 err = mlx5e_selq_init(&priv->selq, &priv->state_lock); 5643 if (err) 5644 goto err_free_cpumask; 5645 5646 INIT_WORK(&priv->update_carrier_work, mlx5e_update_carrier_work); 5647 INIT_WORK(&priv->set_rx_mode_work, mlx5e_set_rx_mode_work); 5648 INIT_WORK(&priv->tx_timeout_work, mlx5e_tx_timeout_work); 5649 INIT_WORK(&priv->update_stats_work, mlx5e_update_stats_work); 5650 5651 priv->wq = create_singlethread_workqueue("mlx5e"); 5652 if (!priv->wq) 5653 goto err_free_selq; 5654 5655 priv->txq2sq = kcalloc_node(num_txqs, sizeof(*priv->txq2sq), GFP_KERNEL, node); 5656 if (!priv->txq2sq) 5657 goto err_destroy_workqueue; 5658 5659 priv->tx_rates = kcalloc_node(num_txqs, sizeof(*priv->tx_rates), GFP_KERNEL, node); 5660 if (!priv->tx_rates) 5661 goto err_free_txq2sq; 5662 5663 priv->channel_stats = 5664 kcalloc_node(nch, sizeof(*priv->channel_stats), GFP_KERNEL, node); 5665 if (!priv->channel_stats) 5666 goto err_free_tx_rates; 5667 5668 return 0; 5669 5670 err_free_tx_rates: 5671 kfree(priv->tx_rates); 5672 err_free_txq2sq: 5673 kfree(priv->txq2sq); 5674 err_destroy_workqueue: 5675 destroy_workqueue(priv->wq); 5676 err_free_selq: 5677 mlx5e_selq_cleanup(&priv->selq); 5678 err_free_cpumask: 5679 free_cpumask_var(priv->scratchpad.cpumask); 5680 return -ENOMEM; 5681 } 5682 5683 void mlx5e_priv_cleanup(struct mlx5e_priv *priv) 5684 { 5685 int i; 5686 5687 /* bail if change profile failed and also rollback failed */ 5688 if (!priv->mdev) 5689 return; 5690 5691 for (i = 0; i < priv->stats_nch; i++) 5692 kvfree(priv->channel_stats[i]); 5693 kfree(priv->channel_stats); 5694 kfree(priv->tx_rates); 5695 kfree(priv->txq2sq); 5696 destroy_workqueue(priv->wq); 5697 mlx5e_selq_cleanup(&priv->selq); 5698 free_cpumask_var(priv->scratchpad.cpumask); 5699 5700 for (i = 0; i < priv->htb_max_qos_sqs; i++) 5701 kfree(priv->htb_qos_sq_stats[i]); 5702 kvfree(priv->htb_qos_sq_stats); 5703 5704 memset(priv, 0, sizeof(*priv)); 5705 } 5706 5707 static unsigned int mlx5e_get_max_num_txqs(struct mlx5_core_dev *mdev, 5708 const struct mlx5e_profile *profile) 5709 { 5710 unsigned int nch, ptp_txqs, qos_txqs; 5711 5712 nch = mlx5e_profile_max_num_channels(mdev, profile); 5713 5714 ptp_txqs = MLX5_CAP_GEN(mdev, ts_cqe_to_dest_cqn) && 5715 mlx5e_profile_feature_cap(profile, PTP_TX) ? 5716 profile->max_tc : 0; 5717 5718 qos_txqs = mlx5_qos_is_supported(mdev) && 5719 mlx5e_profile_feature_cap(profile, QOS_HTB) ? 5720 mlx5e_qos_max_leaf_nodes(mdev) : 0; 5721 5722 return nch * profile->max_tc + ptp_txqs + qos_txqs; 5723 } 5724 5725 static unsigned int mlx5e_get_max_num_rxqs(struct mlx5_core_dev *mdev, 5726 const struct mlx5e_profile *profile) 5727 { 5728 return mlx5e_profile_max_num_channels(mdev, profile); 5729 } 5730 5731 struct net_device * 5732 mlx5e_create_netdev(struct mlx5_core_dev *mdev, const struct mlx5e_profile *profile) 5733 { 5734 struct net_device *netdev; 5735 unsigned int txqs, rxqs; 5736 int err; 5737 5738 txqs = mlx5e_get_max_num_txqs(mdev, profile); 5739 rxqs = mlx5e_get_max_num_rxqs(mdev, profile); 5740 5741 netdev = alloc_etherdev_mqs(sizeof(struct mlx5e_priv), txqs, rxqs); 5742 if (!netdev) { 5743 mlx5_core_err(mdev, "alloc_etherdev_mqs() failed\n"); 5744 return NULL; 5745 } 5746 5747 err = mlx5e_priv_init(netdev_priv(netdev), profile, netdev, mdev); 5748 if (err) { 5749 mlx5_core_err(mdev, "mlx5e_priv_init failed, err=%d\n", err); 5750 goto err_free_netdev; 5751 } 5752 5753 netif_carrier_off(netdev); 5754 netif_tx_disable(netdev); 5755 dev_net_set(netdev, mlx5_core_net(mdev)); 5756 5757 return netdev; 5758 5759 err_free_netdev: 5760 free_netdev(netdev); 5761 5762 return NULL; 5763 } 5764 5765 static void mlx5e_update_features(struct net_device *netdev) 5766 { 5767 if (netdev->reg_state != NETREG_REGISTERED) 5768 return; /* features will be updated on netdev registration */ 5769 5770 rtnl_lock(); 5771 netdev_update_features(netdev); 5772 rtnl_unlock(); 5773 } 5774 5775 static void mlx5e_reset_channels(struct net_device *netdev) 5776 { 5777 netdev_reset_tc(netdev); 5778 } 5779 5780 int mlx5e_attach_netdev(struct mlx5e_priv *priv) 5781 { 5782 const bool take_rtnl = priv->netdev->reg_state == NETREG_REGISTERED; 5783 const struct mlx5e_profile *profile = priv->profile; 5784 int max_nch; 5785 int err; 5786 5787 clear_bit(MLX5E_STATE_DESTROYING, &priv->state); 5788 if (priv->fs) 5789 mlx5e_fs_set_state_destroy(priv->fs, 5790 !test_bit(MLX5E_STATE_DESTROYING, &priv->state)); 5791 5792 /* Validate the max_wqe_size_sq capability. */ 5793 if (WARN_ON_ONCE(mlx5e_get_max_sq_wqebbs(priv->mdev) < MLX5E_MAX_TX_WQEBBS)) { 5794 mlx5_core_warn(priv->mdev, "MLX5E: Max SQ WQEBBs firmware capability: %u, needed %u\n", 5795 mlx5e_get_max_sq_wqebbs(priv->mdev), (unsigned int)MLX5E_MAX_TX_WQEBBS); 5796 return -EIO; 5797 } 5798 5799 /* max number of channels may have changed */ 5800 max_nch = mlx5e_calc_max_nch(priv->mdev, priv->netdev, profile); 5801 if (priv->channels.params.num_channels > max_nch) { 5802 mlx5_core_warn(priv->mdev, "MLX5E: Reducing number of channels to %d\n", max_nch); 5803 /* Reducing the number of channels - RXFH has to be reset, and 5804 * mlx5e_num_channels_changed below will build the RQT. 5805 */ 5806 priv->netdev->priv_flags &= ~IFF_RXFH_CONFIGURED; 5807 priv->channels.params.num_channels = max_nch; 5808 if (priv->channels.params.mqprio.mode == TC_MQPRIO_MODE_CHANNEL) { 5809 mlx5_core_warn(priv->mdev, "MLX5E: Disabling MQPRIO channel mode\n"); 5810 mlx5e_params_mqprio_reset(&priv->channels.params); 5811 } 5812 } 5813 if (max_nch != priv->max_nch) { 5814 mlx5_core_warn(priv->mdev, 5815 "MLX5E: Updating max number of channels from %u to %u\n", 5816 priv->max_nch, max_nch); 5817 priv->max_nch = max_nch; 5818 } 5819 5820 /* 1. Set the real number of queues in the kernel the first time. 5821 * 2. Set our default XPS cpumask. 5822 * 3. Build the RQT. 5823 * 5824 * rtnl_lock is required by netif_set_real_num_*_queues in case the 5825 * netdev has been registered by this point (if this function was called 5826 * in the reload or resume flow). 5827 */ 5828 if (take_rtnl) 5829 rtnl_lock(); 5830 err = mlx5e_num_channels_changed(priv); 5831 if (take_rtnl) 5832 rtnl_unlock(); 5833 if (err) 5834 goto out; 5835 5836 err = profile->init_tx(priv); 5837 if (err) 5838 goto out; 5839 5840 err = profile->init_rx(priv); 5841 if (err) 5842 goto err_cleanup_tx; 5843 5844 if (profile->enable) 5845 profile->enable(priv); 5846 5847 mlx5e_update_features(priv->netdev); 5848 5849 return 0; 5850 5851 err_cleanup_tx: 5852 profile->cleanup_tx(priv); 5853 5854 out: 5855 mlx5e_reset_channels(priv->netdev); 5856 set_bit(MLX5E_STATE_DESTROYING, &priv->state); 5857 if (priv->fs) 5858 mlx5e_fs_set_state_destroy(priv->fs, 5859 !test_bit(MLX5E_STATE_DESTROYING, &priv->state)); 5860 cancel_work_sync(&priv->update_stats_work); 5861 return err; 5862 } 5863 5864 void mlx5e_detach_netdev(struct mlx5e_priv *priv) 5865 { 5866 const struct mlx5e_profile *profile = priv->profile; 5867 5868 set_bit(MLX5E_STATE_DESTROYING, &priv->state); 5869 if (priv->fs) 5870 mlx5e_fs_set_state_destroy(priv->fs, 5871 !test_bit(MLX5E_STATE_DESTROYING, &priv->state)); 5872 5873 if (profile->disable) 5874 profile->disable(priv); 5875 flush_workqueue(priv->wq); 5876 5877 profile->cleanup_rx(priv); 5878 profile->cleanup_tx(priv); 5879 mlx5e_reset_channels(priv->netdev); 5880 cancel_work_sync(&priv->update_stats_work); 5881 } 5882 5883 static int 5884 mlx5e_netdev_init_profile(struct net_device *netdev, struct mlx5_core_dev *mdev, 5885 const struct mlx5e_profile *new_profile, void *new_ppriv) 5886 { 5887 struct mlx5e_priv *priv = netdev_priv(netdev); 5888 int err; 5889 5890 err = mlx5e_priv_init(priv, new_profile, netdev, mdev); 5891 if (err) { 5892 mlx5_core_err(mdev, "mlx5e_priv_init failed, err=%d\n", err); 5893 return err; 5894 } 5895 netif_carrier_off(netdev); 5896 priv->profile = new_profile; 5897 priv->ppriv = new_ppriv; 5898 err = new_profile->init(priv->mdev, priv->netdev); 5899 if (err) 5900 goto priv_cleanup; 5901 5902 return 0; 5903 5904 priv_cleanup: 5905 mlx5e_priv_cleanup(priv); 5906 return err; 5907 } 5908 5909 static int 5910 mlx5e_netdev_attach_profile(struct net_device *netdev, struct mlx5_core_dev *mdev, 5911 const struct mlx5e_profile *new_profile, void *new_ppriv) 5912 { 5913 struct mlx5e_priv *priv = netdev_priv(netdev); 5914 int err; 5915 5916 err = mlx5e_netdev_init_profile(netdev, mdev, new_profile, new_ppriv); 5917 if (err) 5918 return err; 5919 5920 err = mlx5e_attach_netdev(priv); 5921 if (err) 5922 goto profile_cleanup; 5923 return err; 5924 5925 profile_cleanup: 5926 new_profile->cleanup(priv); 5927 mlx5e_priv_cleanup(priv); 5928 return err; 5929 } 5930 5931 int mlx5e_netdev_change_profile(struct mlx5e_priv *priv, 5932 const struct mlx5e_profile *new_profile, void *new_ppriv) 5933 { 5934 const struct mlx5e_profile *orig_profile = priv->profile; 5935 struct net_device *netdev = priv->netdev; 5936 struct mlx5_core_dev *mdev = priv->mdev; 5937 void *orig_ppriv = priv->ppriv; 5938 int err, rollback_err; 5939 5940 /* cleanup old profile */ 5941 mlx5e_detach_netdev(priv); 5942 priv->profile->cleanup(priv); 5943 mlx5e_priv_cleanup(priv); 5944 5945 if (mdev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR) { 5946 mlx5e_netdev_init_profile(netdev, mdev, new_profile, new_ppriv); 5947 set_bit(MLX5E_STATE_DESTROYING, &priv->state); 5948 return -EIO; 5949 } 5950 5951 err = mlx5e_netdev_attach_profile(netdev, mdev, new_profile, new_ppriv); 5952 if (err) { /* roll back to original profile */ 5953 netdev_warn(netdev, "%s: new profile init failed, %d\n", __func__, err); 5954 goto rollback; 5955 } 5956 5957 return 0; 5958 5959 rollback: 5960 rollback_err = mlx5e_netdev_attach_profile(netdev, mdev, orig_profile, orig_ppriv); 5961 if (rollback_err) 5962 netdev_err(netdev, "%s: failed to rollback to orig profile, %d\n", 5963 __func__, rollback_err); 5964 return err; 5965 } 5966 5967 void mlx5e_netdev_attach_nic_profile(struct mlx5e_priv *priv) 5968 { 5969 mlx5e_netdev_change_profile(priv, &mlx5e_nic_profile, NULL); 5970 } 5971 5972 void mlx5e_destroy_netdev(struct mlx5e_priv *priv) 5973 { 5974 struct net_device *netdev = priv->netdev; 5975 5976 mlx5e_priv_cleanup(priv); 5977 free_netdev(netdev); 5978 } 5979 5980 static int mlx5e_resume(struct auxiliary_device *adev) 5981 { 5982 struct mlx5_adev *edev = container_of(adev, struct mlx5_adev, adev); 5983 struct mlx5e_dev *mlx5e_dev = auxiliary_get_drvdata(adev); 5984 struct mlx5e_priv *priv = mlx5e_dev->priv; 5985 struct net_device *netdev = priv->netdev; 5986 struct mlx5_core_dev *mdev = edev->mdev; 5987 int err; 5988 5989 if (netif_device_present(netdev)) 5990 return 0; 5991 5992 err = mlx5e_create_mdev_resources(mdev); 5993 if (err) 5994 return err; 5995 5996 err = mlx5e_attach_netdev(priv); 5997 if (err) { 5998 mlx5e_destroy_mdev_resources(mdev); 5999 return err; 6000 } 6001 6002 return 0; 6003 } 6004 6005 static int mlx5e_suspend(struct auxiliary_device *adev, pm_message_t state) 6006 { 6007 struct mlx5e_dev *mlx5e_dev = auxiliary_get_drvdata(adev); 6008 struct mlx5e_priv *priv = mlx5e_dev->priv; 6009 struct net_device *netdev = priv->netdev; 6010 struct mlx5_core_dev *mdev = priv->mdev; 6011 6012 if (!netif_device_present(netdev)) { 6013 if (test_bit(MLX5E_STATE_DESTROYING, &priv->state)) 6014 mlx5e_destroy_mdev_resources(mdev); 6015 return -ENODEV; 6016 } 6017 6018 mlx5e_detach_netdev(priv); 6019 mlx5e_destroy_mdev_resources(mdev); 6020 return 0; 6021 } 6022 6023 static int mlx5e_probe(struct auxiliary_device *adev, 6024 const struct auxiliary_device_id *id) 6025 { 6026 struct mlx5_adev *edev = container_of(adev, struct mlx5_adev, adev); 6027 const struct mlx5e_profile *profile = &mlx5e_nic_profile; 6028 struct mlx5_core_dev *mdev = edev->mdev; 6029 struct mlx5e_dev *mlx5e_dev; 6030 struct net_device *netdev; 6031 pm_message_t state = {}; 6032 struct mlx5e_priv *priv; 6033 int err; 6034 6035 mlx5e_dev = mlx5e_create_devlink(&adev->dev, mdev); 6036 if (IS_ERR(mlx5e_dev)) 6037 return PTR_ERR(mlx5e_dev); 6038 auxiliary_set_drvdata(adev, mlx5e_dev); 6039 6040 err = mlx5e_devlink_port_register(mlx5e_dev, mdev); 6041 if (err) { 6042 mlx5_core_err(mdev, "mlx5e_devlink_port_register failed, %d\n", err); 6043 goto err_devlink_unregister; 6044 } 6045 6046 netdev = mlx5e_create_netdev(mdev, profile); 6047 if (!netdev) { 6048 mlx5_core_err(mdev, "mlx5e_create_netdev failed\n"); 6049 err = -ENOMEM; 6050 goto err_devlink_port_unregister; 6051 } 6052 SET_NETDEV_DEVLINK_PORT(netdev, &mlx5e_dev->dl_port); 6053 6054 mlx5e_build_nic_netdev(netdev); 6055 6056 priv = netdev_priv(netdev); 6057 mlx5e_dev->priv = priv; 6058 6059 priv->profile = profile; 6060 priv->ppriv = NULL; 6061 6062 err = profile->init(mdev, netdev); 6063 if (err) { 6064 mlx5_core_err(mdev, "mlx5e_nic_profile init failed, %d\n", err); 6065 goto err_destroy_netdev; 6066 } 6067 6068 err = mlx5e_resume(adev); 6069 if (err) { 6070 mlx5_core_err(mdev, "mlx5e_resume failed, %d\n", err); 6071 goto err_profile_cleanup; 6072 } 6073 6074 err = register_netdev(netdev); 6075 if (err) { 6076 mlx5_core_err(mdev, "register_netdev failed, %d\n", err); 6077 goto err_resume; 6078 } 6079 6080 mlx5e_dcbnl_init_app(priv); 6081 mlx5_core_uplink_netdev_set(mdev, netdev); 6082 mlx5e_params_print_info(mdev, &priv->channels.params); 6083 return 0; 6084 6085 err_resume: 6086 mlx5e_suspend(adev, state); 6087 err_profile_cleanup: 6088 profile->cleanup(priv); 6089 err_destroy_netdev: 6090 mlx5e_destroy_netdev(priv); 6091 err_devlink_port_unregister: 6092 mlx5e_devlink_port_unregister(mlx5e_dev); 6093 err_devlink_unregister: 6094 mlx5e_destroy_devlink(mlx5e_dev); 6095 return err; 6096 } 6097 6098 static void mlx5e_remove(struct auxiliary_device *adev) 6099 { 6100 struct mlx5e_dev *mlx5e_dev = auxiliary_get_drvdata(adev); 6101 struct mlx5e_priv *priv = mlx5e_dev->priv; 6102 pm_message_t state = {}; 6103 6104 mlx5_core_uplink_netdev_set(priv->mdev, NULL); 6105 mlx5e_dcbnl_delete_app(priv); 6106 unregister_netdev(priv->netdev); 6107 mlx5e_suspend(adev, state); 6108 priv->profile->cleanup(priv); 6109 mlx5e_destroy_netdev(priv); 6110 mlx5e_devlink_port_unregister(mlx5e_dev); 6111 mlx5e_destroy_devlink(mlx5e_dev); 6112 } 6113 6114 static const struct auxiliary_device_id mlx5e_id_table[] = { 6115 { .name = MLX5_ADEV_NAME ".eth", }, 6116 {}, 6117 }; 6118 6119 MODULE_DEVICE_TABLE(auxiliary, mlx5e_id_table); 6120 6121 static struct auxiliary_driver mlx5e_driver = { 6122 .name = "eth", 6123 .probe = mlx5e_probe, 6124 .remove = mlx5e_remove, 6125 .suspend = mlx5e_suspend, 6126 .resume = mlx5e_resume, 6127 .id_table = mlx5e_id_table, 6128 }; 6129 6130 int mlx5e_init(void) 6131 { 6132 int ret; 6133 6134 mlx5e_build_ptys2ethtool_map(); 6135 ret = auxiliary_driver_register(&mlx5e_driver); 6136 if (ret) 6137 return ret; 6138 6139 ret = mlx5e_rep_init(); 6140 if (ret) 6141 auxiliary_driver_unregister(&mlx5e_driver); 6142 return ret; 6143 } 6144 6145 void mlx5e_cleanup(void) 6146 { 6147 mlx5e_rep_cleanup(); 6148 auxiliary_driver_unregister(&mlx5e_driver); 6149 } 6150