1 // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
2 /* Copyright (c) 2019 Mellanox Technologies. */
7 #include "en_accel/en_accel.h"
8 #include "accel/ipsec.h"
9 #include "fpga/ipsec.h"
11 static bool mlx5e_rx_is_xdp(struct mlx5e_params *params,
12 struct mlx5e_xsk_param *xsk)
14 return params->xdp_prog || xsk;
17 u16 mlx5e_get_linear_rq_headroom(struct mlx5e_params *params,
18 struct mlx5e_xsk_param *xsk)
25 headroom = NET_IP_ALIGN;
26 if (mlx5e_rx_is_xdp(params, xsk))
27 headroom += XDP_PACKET_HEADROOM;
29 headroom += MLX5_RX_HEADROOM;
34 u32 mlx5e_rx_get_min_frag_sz(struct mlx5e_params *params,
35 struct mlx5e_xsk_param *xsk)
37 u32 hw_mtu = MLX5E_SW2HW_MTU(params, params->sw_mtu);
38 u16 linear_rq_headroom = mlx5e_get_linear_rq_headroom(params, xsk);
40 return linear_rq_headroom + hw_mtu;
43 static u32 mlx5e_rx_get_linear_frag_sz(struct mlx5e_params *params,
44 struct mlx5e_xsk_param *xsk)
46 u32 frag_sz = mlx5e_rx_get_min_frag_sz(params, xsk);
48 /* AF_XDP doesn't build SKBs in place. */
50 frag_sz = MLX5_SKB_FRAG_SZ(frag_sz);
52 /* XDP in mlx5e doesn't support multiple packets per page. AF_XDP is a
53 * special case. It can run with frames smaller than a page, as it
54 * doesn't allocate pages dynamically. However, here we pretend that
55 * fragments are page-sized: it allows to treat XSK frames like pages
56 * by redirecting alloc and free operations to XSK rings and by using
57 * the fact there are no multiple packets per "page" (which is a frame).
58 * The latter is important, because frames may come in a random order,
59 * and we will have trouble assemblying a real page of multiple frames.
61 if (mlx5e_rx_is_xdp(params, xsk))
62 frag_sz = max_t(u32, frag_sz, PAGE_SIZE);
64 /* Even if we can go with a smaller fragment size, we must not put
65 * multiple packets into a single frame.
68 frag_sz = max_t(u32, frag_sz, xsk->chunk_size);
73 u8 mlx5e_mpwqe_log_pkts_per_wqe(struct mlx5e_params *params,
74 struct mlx5e_xsk_param *xsk)
76 u32 linear_frag_sz = mlx5e_rx_get_linear_frag_sz(params, xsk);
78 return MLX5_MPWRQ_LOG_WQE_SZ - order_base_2(linear_frag_sz);
81 bool mlx5e_rx_is_linear_skb(struct mlx5e_params *params,
82 struct mlx5e_xsk_param *xsk)
84 /* AF_XDP allocates SKBs on XDP_PASS - ensure they don't occupy more
85 * than one page. For this, check both with and without xsk.
87 u32 linear_frag_sz = max(mlx5e_rx_get_linear_frag_sz(params, xsk),
88 mlx5e_rx_get_linear_frag_sz(params, NULL));
90 return params->packet_merge.type == MLX5E_PACKET_MERGE_NONE &&
91 linear_frag_sz <= PAGE_SIZE;
94 bool mlx5e_verify_rx_mpwqe_strides(struct mlx5_core_dev *mdev,
95 u8 log_stride_sz, u8 log_num_strides)
97 if (log_stride_sz + log_num_strides != MLX5_MPWRQ_LOG_WQE_SZ)
100 if (log_stride_sz < MLX5_MPWQE_LOG_STRIDE_SZ_BASE ||
101 log_stride_sz > MLX5_MPWQE_LOG_STRIDE_SZ_MAX)
104 if (log_num_strides > MLX5_MPWQE_LOG_NUM_STRIDES_MAX)
107 if (MLX5_CAP_GEN(mdev, ext_stride_num_range))
108 return log_num_strides >= MLX5_MPWQE_LOG_NUM_STRIDES_EXT_BASE;
110 return log_num_strides >= MLX5_MPWQE_LOG_NUM_STRIDES_BASE;
113 bool mlx5e_rx_mpwqe_is_linear_skb(struct mlx5_core_dev *mdev,
114 struct mlx5e_params *params,
115 struct mlx5e_xsk_param *xsk)
120 if (!mlx5e_rx_is_linear_skb(params, xsk))
123 log_stride_sz = order_base_2(mlx5e_rx_get_linear_frag_sz(params, xsk));
124 log_num_strides = MLX5_MPWRQ_LOG_WQE_SZ - log_stride_sz;
126 return mlx5e_verify_rx_mpwqe_strides(mdev, log_stride_sz, log_num_strides);
129 u8 mlx5e_mpwqe_get_log_rq_size(struct mlx5e_params *params,
130 struct mlx5e_xsk_param *xsk)
132 u8 log_pkts_per_wqe = mlx5e_mpwqe_log_pkts_per_wqe(params, xsk);
134 /* Numbers are unsigned, don't subtract to avoid underflow. */
135 if (params->log_rq_mtu_frames <
136 log_pkts_per_wqe + MLX5E_PARAMS_MINIMUM_LOG_RQ_SIZE_MPW)
137 return MLX5E_PARAMS_MINIMUM_LOG_RQ_SIZE_MPW;
139 return params->log_rq_mtu_frames - log_pkts_per_wqe;
142 u8 mlx5e_shampo_get_log_hd_entry_size(struct mlx5_core_dev *mdev,
143 struct mlx5e_params *params)
145 return order_base_2(DIV_ROUND_UP(MLX5E_RX_MAX_HEAD, MLX5E_SHAMPO_WQ_BASE_HEAD_ENTRY_SIZE));
148 u8 mlx5e_shampo_get_log_rsrv_size(struct mlx5_core_dev *mdev,
149 struct mlx5e_params *params)
151 return order_base_2(MLX5E_SHAMPO_WQ_RESRV_SIZE / MLX5E_SHAMPO_WQ_BASE_RESRV_SIZE);
154 u8 mlx5e_shampo_get_log_pkt_per_rsrv(struct mlx5_core_dev *mdev,
155 struct mlx5e_params *params)
157 u32 resrv_size = BIT(mlx5e_shampo_get_log_rsrv_size(mdev, params)) *
160 return order_base_2(DIV_ROUND_UP(resrv_size, params->sw_mtu));
163 u8 mlx5e_mpwqe_get_log_stride_size(struct mlx5_core_dev *mdev,
164 struct mlx5e_params *params,
165 struct mlx5e_xsk_param *xsk)
167 if (mlx5e_rx_mpwqe_is_linear_skb(mdev, params, xsk))
168 return order_base_2(mlx5e_rx_get_linear_frag_sz(params, xsk));
170 return MLX5_MPWRQ_DEF_LOG_STRIDE_SZ(mdev);
173 u8 mlx5e_mpwqe_get_log_num_strides(struct mlx5_core_dev *mdev,
174 struct mlx5e_params *params,
175 struct mlx5e_xsk_param *xsk)
177 return MLX5_MPWRQ_LOG_WQE_SZ -
178 mlx5e_mpwqe_get_log_stride_size(mdev, params, xsk);
181 u8 mlx5e_mpwqe_get_min_wqe_bulk(unsigned int wq_sz)
183 #define UMR_WQE_BULK (2)
184 return min_t(unsigned int, UMR_WQE_BULK, wq_sz / 2 - 1);
187 u16 mlx5e_get_rq_headroom(struct mlx5_core_dev *mdev,
188 struct mlx5e_params *params,
189 struct mlx5e_xsk_param *xsk)
191 bool is_linear_skb = (params->rq_wq_type == MLX5_WQ_TYPE_CYCLIC) ?
192 mlx5e_rx_is_linear_skb(params, xsk) :
193 mlx5e_rx_mpwqe_is_linear_skb(mdev, params, xsk);
195 return is_linear_skb || params->packet_merge.type == MLX5E_PACKET_MERGE_SHAMPO ?
196 mlx5e_get_linear_rq_headroom(params, xsk) : 0;
199 u16 mlx5e_calc_sq_stop_room(struct mlx5_core_dev *mdev, struct mlx5e_params *params)
201 bool is_mpwqe = MLX5E_GET_PFLAG(params, MLX5E_PFLAG_SKB_TX_MPWQE);
204 stop_room = mlx5e_tls_get_stop_room(mdev, params);
205 stop_room += mlx5e_stop_room_for_max_wqe(mdev);
207 /* A MPWQE can take up to the maximum-sized WQE + all the normal
208 * stop room can be taken if a new packet breaks the active
209 * MPWQE session and allocates its WQEs right away.
211 stop_room += mlx5e_stop_room_for_max_wqe(mdev);
216 int mlx5e_validate_params(struct mlx5_core_dev *mdev, struct mlx5e_params *params)
218 size_t sq_size = 1 << params->log_sq_size;
221 stop_room = mlx5e_calc_sq_stop_room(mdev, params);
222 if (stop_room >= sq_size) {
223 mlx5_core_err(mdev, "Stop room %u is bigger than the SQ size %zu\n",
231 static struct dim_cq_moder mlx5e_get_def_tx_moderation(u8 cq_period_mode)
233 struct dim_cq_moder moder = {};
235 moder.cq_period_mode = cq_period_mode;
236 moder.pkts = MLX5E_PARAMS_DEFAULT_TX_CQ_MODERATION_PKTS;
237 moder.usec = MLX5E_PARAMS_DEFAULT_TX_CQ_MODERATION_USEC;
238 if (cq_period_mode == MLX5_CQ_PERIOD_MODE_START_FROM_CQE)
239 moder.usec = MLX5E_PARAMS_DEFAULT_TX_CQ_MODERATION_USEC_FROM_CQE;
244 static struct dim_cq_moder mlx5e_get_def_rx_moderation(u8 cq_period_mode)
246 struct dim_cq_moder moder = {};
248 moder.cq_period_mode = cq_period_mode;
249 moder.pkts = MLX5E_PARAMS_DEFAULT_RX_CQ_MODERATION_PKTS;
250 moder.usec = MLX5E_PARAMS_DEFAULT_RX_CQ_MODERATION_USEC;
251 if (cq_period_mode == MLX5_CQ_PERIOD_MODE_START_FROM_CQE)
252 moder.usec = MLX5E_PARAMS_DEFAULT_RX_CQ_MODERATION_USEC_FROM_CQE;
257 static u8 mlx5_to_net_dim_cq_period_mode(u8 cq_period_mode)
259 return cq_period_mode == MLX5_CQ_PERIOD_MODE_START_FROM_CQE ?
260 DIM_CQ_PERIOD_MODE_START_FROM_CQE :
261 DIM_CQ_PERIOD_MODE_START_FROM_EQE;
264 void mlx5e_reset_tx_moderation(struct mlx5e_params *params, u8 cq_period_mode)
266 if (params->tx_dim_enabled) {
267 u8 dim_period_mode = mlx5_to_net_dim_cq_period_mode(cq_period_mode);
269 params->tx_cq_moderation = net_dim_get_def_tx_moderation(dim_period_mode);
271 params->tx_cq_moderation = mlx5e_get_def_tx_moderation(cq_period_mode);
275 void mlx5e_reset_rx_moderation(struct mlx5e_params *params, u8 cq_period_mode)
277 if (params->rx_dim_enabled) {
278 u8 dim_period_mode = mlx5_to_net_dim_cq_period_mode(cq_period_mode);
280 params->rx_cq_moderation = net_dim_get_def_rx_moderation(dim_period_mode);
282 params->rx_cq_moderation = mlx5e_get_def_rx_moderation(cq_period_mode);
286 void mlx5e_set_tx_cq_mode_params(struct mlx5e_params *params, u8 cq_period_mode)
288 mlx5e_reset_tx_moderation(params, cq_period_mode);
289 MLX5E_SET_PFLAG(params, MLX5E_PFLAG_TX_CQE_BASED_MODER,
290 params->tx_cq_moderation.cq_period_mode ==
291 MLX5_CQ_PERIOD_MODE_START_FROM_CQE);
294 void mlx5e_set_rx_cq_mode_params(struct mlx5e_params *params, u8 cq_period_mode)
296 mlx5e_reset_rx_moderation(params, cq_period_mode);
297 MLX5E_SET_PFLAG(params, MLX5E_PFLAG_RX_CQE_BASED_MODER,
298 params->rx_cq_moderation.cq_period_mode ==
299 MLX5_CQ_PERIOD_MODE_START_FROM_CQE);
302 bool slow_pci_heuristic(struct mlx5_core_dev *mdev)
307 mlx5e_port_max_linkspeed(mdev, &link_speed);
308 pci_bw = pcie_bandwidth_available(mdev->pdev, NULL, NULL, NULL);
309 mlx5_core_dbg_once(mdev, "Max link speed = %d, PCI BW = %d\n",
312 #define MLX5E_SLOW_PCI_RATIO (2)
314 return link_speed && pci_bw &&
315 link_speed > MLX5E_SLOW_PCI_RATIO * pci_bw;
318 bool mlx5e_striding_rq_possible(struct mlx5_core_dev *mdev,
319 struct mlx5e_params *params)
321 if (!mlx5e_check_fragmented_striding_rq_cap(mdev))
324 if (mlx5_fpga_is_ipsec_device(mdev))
327 if (params->xdp_prog) {
328 /* XSK params are not considered here. If striding RQ is in use,
329 * and an XSK is being opened, mlx5e_rx_mpwqe_is_linear_skb will
330 * be called with the known XSK params.
332 if (!mlx5e_rx_mpwqe_is_linear_skb(mdev, params, NULL))
339 void mlx5e_init_rq_type_params(struct mlx5_core_dev *mdev,
340 struct mlx5e_params *params)
342 params->log_rq_mtu_frames = is_kdump_kernel() ?
343 MLX5E_PARAMS_MINIMUM_LOG_RQ_SIZE :
344 MLX5E_PARAMS_DEFAULT_LOG_RQ_SIZE;
346 mlx5_core_info(mdev, "MLX5E: StrdRq(%d) RqSz(%ld) StrdSz(%ld) RxCqeCmprss(%d)\n",
347 params->rq_wq_type == MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ,
348 params->rq_wq_type == MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ ?
349 BIT(mlx5e_mpwqe_get_log_rq_size(params, NULL)) :
350 BIT(params->log_rq_mtu_frames),
351 BIT(mlx5e_mpwqe_get_log_stride_size(mdev, params, NULL)),
352 MLX5E_GET_PFLAG(params, MLX5E_PFLAG_RX_CQE_COMPRESS));
355 void mlx5e_set_rq_type(struct mlx5_core_dev *mdev, struct mlx5e_params *params)
357 params->rq_wq_type = mlx5e_striding_rq_possible(mdev, params) &&
358 MLX5E_GET_PFLAG(params, MLX5E_PFLAG_RX_STRIDING_RQ) ?
359 MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ :
363 void mlx5e_build_rq_params(struct mlx5_core_dev *mdev,
364 struct mlx5e_params *params)
366 /* Prefer Striding RQ, unless any of the following holds:
367 * - Striding RQ configuration is not possible/supported.
368 * - CQE compression is ON, and stride_index mini_cqe layout is not supported.
369 * - Legacy RQ would use linear SKB while Striding RQ would use non-linear.
371 * No XSK params: checking the availability of striding RQ in general.
373 if ((!MLX5E_GET_PFLAG(params, MLX5E_PFLAG_RX_CQE_COMPRESS) ||
374 MLX5_CAP_GEN(mdev, mini_cqe_resp_stride_index)) &&
375 mlx5e_striding_rq_possible(mdev, params) &&
376 (mlx5e_rx_mpwqe_is_linear_skb(mdev, params, NULL) ||
377 !mlx5e_rx_is_linear_skb(params, NULL)))
378 MLX5E_SET_PFLAG(params, MLX5E_PFLAG_RX_STRIDING_RQ, true);
379 mlx5e_set_rq_type(mdev, params);
380 mlx5e_init_rq_type_params(mdev, params);
383 /* Build queue parameters */
385 void mlx5e_build_create_cq_param(struct mlx5e_create_cq_param *ccp, struct mlx5e_channel *c)
387 *ccp = (struct mlx5e_create_cq_param) {
389 .ch_stats = c->stats,
390 .node = cpu_to_node(c->cpu),
395 #define DEFAULT_FRAG_SIZE (2048)
397 static void mlx5e_build_rq_frags_info(struct mlx5_core_dev *mdev,
398 struct mlx5e_params *params,
399 struct mlx5e_xsk_param *xsk,
400 struct mlx5e_rq_frags_info *info)
402 u32 byte_count = MLX5E_SW2HW_MTU(params, params->sw_mtu);
403 int frag_size_max = DEFAULT_FRAG_SIZE;
407 if (mlx5_fpga_is_ipsec_device(mdev))
408 byte_count += MLX5E_METADATA_ETHER_LEN;
410 if (mlx5e_rx_is_linear_skb(params, xsk)) {
413 frag_stride = mlx5e_rx_get_linear_frag_sz(params, xsk);
414 frag_stride = roundup_pow_of_two(frag_stride);
416 info->arr[0].frag_size = byte_count;
417 info->arr[0].frag_stride = frag_stride;
419 info->wqe_bulk = PAGE_SIZE / frag_stride;
423 if (byte_count > PAGE_SIZE +
424 (MLX5E_MAX_RX_FRAGS - 1) * frag_size_max)
425 frag_size_max = PAGE_SIZE;
428 while (buf_size < byte_count) {
429 int frag_size = byte_count - buf_size;
431 if (i < MLX5E_MAX_RX_FRAGS - 1)
432 frag_size = min(frag_size, frag_size_max);
434 info->arr[i].frag_size = frag_size;
435 info->arr[i].frag_stride = roundup_pow_of_two(frag_size);
437 buf_size += frag_size;
441 /* number of different wqes sharing a page */
442 info->wqe_bulk = 1 + (info->num_frags % 2);
445 info->wqe_bulk = max_t(u8, info->wqe_bulk, 8);
446 info->log_num_frags = order_base_2(info->num_frags);
449 static u8 mlx5e_get_rqwq_log_stride(u8 wq_type, int ndsegs)
451 int sz = sizeof(struct mlx5_wqe_data_seg) * ndsegs;
454 case MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ:
455 sz += sizeof(struct mlx5e_rx_wqe_ll);
457 default: /* MLX5_WQ_TYPE_CYCLIC */
458 sz += sizeof(struct mlx5e_rx_wqe_cyc);
461 return order_base_2(sz);
464 static void mlx5e_build_common_cq_param(struct mlx5_core_dev *mdev,
465 struct mlx5e_cq_param *param)
467 void *cqc = param->cqc;
469 MLX5_SET(cqc, cqc, uar_page, mdev->priv.uar->index);
470 if (MLX5_CAP_GEN(mdev, cqe_128_always) && cache_line_size() >= 128)
471 MLX5_SET(cqc, cqc, cqe_sz, CQE_STRIDE_128_PAD);
474 static u32 mlx5e_shampo_get_log_cq_size(struct mlx5_core_dev *mdev,
475 struct mlx5e_params *params,
476 struct mlx5e_xsk_param *xsk)
478 int rsrv_size = BIT(mlx5e_shampo_get_log_rsrv_size(mdev, params)) * PAGE_SIZE;
479 u16 num_strides = BIT(mlx5e_mpwqe_get_log_num_strides(mdev, params, xsk));
480 int pkt_per_rsrv = BIT(mlx5e_shampo_get_log_pkt_per_rsrv(mdev, params));
481 u8 log_stride_sz = mlx5e_mpwqe_get_log_stride_size(mdev, params, xsk);
482 int wq_size = BIT(mlx5e_mpwqe_get_log_rq_size(params, xsk));
483 int wqe_size = BIT(log_stride_sz) * num_strides;
485 /* +1 is for the case that the pkt_per_rsrv dont consume the reservation
486 * so we get a filler cqe for the rest of the reservation.
488 return order_base_2((wqe_size / rsrv_size) * wq_size * (pkt_per_rsrv + 1));
491 static void mlx5e_build_rx_cq_param(struct mlx5_core_dev *mdev,
492 struct mlx5e_params *params,
493 struct mlx5e_xsk_param *xsk,
494 struct mlx5e_cq_param *param)
496 bool hw_stridx = false;
497 void *cqc = param->cqc;
500 switch (params->rq_wq_type) {
501 case MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ:
502 hw_stridx = MLX5_CAP_GEN(mdev, mini_cqe_resp_stride_index);
503 if (params->packet_merge.type == MLX5E_PACKET_MERGE_SHAMPO)
504 log_cq_size = mlx5e_shampo_get_log_cq_size(mdev, params, xsk);
506 log_cq_size = mlx5e_mpwqe_get_log_rq_size(params, xsk) +
507 mlx5e_mpwqe_get_log_num_strides(mdev, params, xsk);
509 default: /* MLX5_WQ_TYPE_CYCLIC */
510 log_cq_size = params->log_rq_mtu_frames;
513 MLX5_SET(cqc, cqc, log_cq_size, log_cq_size);
514 if (MLX5E_GET_PFLAG(params, MLX5E_PFLAG_RX_CQE_COMPRESS)) {
515 MLX5_SET(cqc, cqc, mini_cqe_res_format, hw_stridx ?
516 MLX5_CQE_FORMAT_CSUM_STRIDX : MLX5_CQE_FORMAT_CSUM);
517 MLX5_SET(cqc, cqc, cqe_comp_en, 1);
520 mlx5e_build_common_cq_param(mdev, param);
521 param->cq_period_mode = params->rx_cq_moderation.cq_period_mode;
524 static u8 rq_end_pad_mode(struct mlx5_core_dev *mdev, struct mlx5e_params *params)
526 bool lro_en = params->packet_merge.type == MLX5E_PACKET_MERGE_LRO;
527 bool ro = pcie_relaxed_ordering_enabled(mdev->pdev) &&
528 MLX5_CAP_GEN(mdev, relaxed_ordering_write);
530 return ro && lro_en ?
531 MLX5_WQ_END_PAD_MODE_NONE : MLX5_WQ_END_PAD_MODE_ALIGN;
534 int mlx5e_build_rq_param(struct mlx5_core_dev *mdev,
535 struct mlx5e_params *params,
536 struct mlx5e_xsk_param *xsk,
538 struct mlx5e_rq_param *param)
540 void *rqc = param->rqc;
541 void *wq = MLX5_ADDR_OF(rqc, rqc, wq);
544 switch (params->rq_wq_type) {
545 case MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ: {
546 u8 log_wqe_num_of_strides = mlx5e_mpwqe_get_log_num_strides(mdev, params, xsk);
547 u8 log_wqe_stride_size = mlx5e_mpwqe_get_log_stride_size(mdev, params, xsk);
549 if (!mlx5e_verify_rx_mpwqe_strides(mdev, log_wqe_stride_size,
550 log_wqe_num_of_strides)) {
552 "Bad RX MPWQE params: log_stride_size %u, log_num_strides %u\n",
553 log_wqe_stride_size, log_wqe_num_of_strides);
557 MLX5_SET(wq, wq, log_wqe_num_of_strides,
558 log_wqe_num_of_strides - MLX5_MPWQE_LOG_NUM_STRIDES_BASE);
559 MLX5_SET(wq, wq, log_wqe_stride_size,
560 log_wqe_stride_size - MLX5_MPWQE_LOG_STRIDE_SZ_BASE);
561 MLX5_SET(wq, wq, log_wq_sz, mlx5e_mpwqe_get_log_rq_size(params, xsk));
562 if (params->packet_merge.type == MLX5E_PACKET_MERGE_SHAMPO) {
563 MLX5_SET(wq, wq, shampo_enable, true);
564 MLX5_SET(wq, wq, log_reservation_size,
565 mlx5e_shampo_get_log_rsrv_size(mdev, params));
567 log_max_num_of_packets_per_reservation,
568 mlx5e_shampo_get_log_pkt_per_rsrv(mdev, params));
569 MLX5_SET(wq, wq, log_headers_entry_size,
570 mlx5e_shampo_get_log_hd_entry_size(mdev, params));
571 MLX5_SET(rqc, rqc, reservation_timeout,
572 params->packet_merge.timeout);
573 MLX5_SET(rqc, rqc, shampo_match_criteria_type,
574 params->packet_merge.shampo.match_criteria_type);
575 MLX5_SET(rqc, rqc, shampo_no_match_alignment_granularity,
576 params->packet_merge.shampo.alignment_granularity);
580 default: /* MLX5_WQ_TYPE_CYCLIC */
581 MLX5_SET(wq, wq, log_wq_sz, params->log_rq_mtu_frames);
582 mlx5e_build_rq_frags_info(mdev, params, xsk, ¶m->frags_info);
583 ndsegs = param->frags_info.num_frags;
586 MLX5_SET(wq, wq, wq_type, params->rq_wq_type);
587 MLX5_SET(wq, wq, end_padding_mode, rq_end_pad_mode(mdev, params));
588 MLX5_SET(wq, wq, log_wq_stride,
589 mlx5e_get_rqwq_log_stride(params->rq_wq_type, ndsegs));
590 MLX5_SET(wq, wq, pd, mdev->mlx5e_res.hw_objs.pdn);
591 MLX5_SET(rqc, rqc, counter_set_id, q_counter);
592 MLX5_SET(rqc, rqc, vsd, params->vlan_strip_disable);
593 MLX5_SET(rqc, rqc, scatter_fcs, params->scatter_fcs_en);
595 param->wq.buf_numa_node = dev_to_node(mlx5_core_dma_dev(mdev));
596 mlx5e_build_rx_cq_param(mdev, params, xsk, ¶m->cqp);
601 void mlx5e_build_drop_rq_param(struct mlx5_core_dev *mdev,
603 struct mlx5e_rq_param *param)
605 void *rqc = param->rqc;
606 void *wq = MLX5_ADDR_OF(rqc, rqc, wq);
608 MLX5_SET(wq, wq, wq_type, MLX5_WQ_TYPE_CYCLIC);
609 MLX5_SET(wq, wq, log_wq_stride,
610 mlx5e_get_rqwq_log_stride(MLX5_WQ_TYPE_CYCLIC, 1));
611 MLX5_SET(rqc, rqc, counter_set_id, q_counter);
613 param->wq.buf_numa_node = dev_to_node(mlx5_core_dma_dev(mdev));
616 void mlx5e_build_tx_cq_param(struct mlx5_core_dev *mdev,
617 struct mlx5e_params *params,
618 struct mlx5e_cq_param *param)
620 void *cqc = param->cqc;
622 MLX5_SET(cqc, cqc, log_cq_size, params->log_sq_size);
624 mlx5e_build_common_cq_param(mdev, param);
625 param->cq_period_mode = params->tx_cq_moderation.cq_period_mode;
628 void mlx5e_build_sq_param_common(struct mlx5_core_dev *mdev,
629 struct mlx5e_sq_param *param)
631 void *sqc = param->sqc;
632 void *wq = MLX5_ADDR_OF(sqc, sqc, wq);
634 MLX5_SET(wq, wq, log_wq_stride, ilog2(MLX5_SEND_WQE_BB));
635 MLX5_SET(wq, wq, pd, mdev->mlx5e_res.hw_objs.pdn);
637 param->wq.buf_numa_node = dev_to_node(mlx5_core_dma_dev(mdev));
640 void mlx5e_build_sq_param(struct mlx5_core_dev *mdev,
641 struct mlx5e_params *params,
642 struct mlx5e_sq_param *param)
644 void *sqc = param->sqc;
645 void *wq = MLX5_ADDR_OF(sqc, sqc, wq);
648 allow_swp = mlx5_geneve_tx_allowed(mdev) ||
649 !!MLX5_IPSEC_DEV(mdev);
650 mlx5e_build_sq_param_common(mdev, param);
651 MLX5_SET(wq, wq, log_wq_sz, params->log_sq_size);
652 MLX5_SET(sqc, sqc, allow_swp, allow_swp);
653 param->is_mpw = MLX5E_GET_PFLAG(params, MLX5E_PFLAG_SKB_TX_MPWQE);
654 param->stop_room = mlx5e_calc_sq_stop_room(mdev, params);
655 mlx5e_build_tx_cq_param(mdev, params, ¶m->cqp);
658 static void mlx5e_build_ico_cq_param(struct mlx5_core_dev *mdev,
660 struct mlx5e_cq_param *param)
662 void *cqc = param->cqc;
664 MLX5_SET(cqc, cqc, log_cq_size, log_wq_size);
666 mlx5e_build_common_cq_param(mdev, param);
668 param->cq_period_mode = DIM_CQ_PERIOD_MODE_START_FROM_EQE;
671 static u8 mlx5e_get_rq_log_wq_sz(void *rqc)
673 void *wq = MLX5_ADDR_OF(rqc, rqc, wq);
675 return MLX5_GET(wq, wq, log_wq_sz);
678 /* This function calculates the maximum number of headers entries that are needed
679 * per WQE, the formula is based on the size of the reservations and the
680 * restriction we have about max packets for reservation that is equal to max
681 * headers per reservation.
683 u32 mlx5e_shampo_hd_per_wqe(struct mlx5_core_dev *mdev,
684 struct mlx5e_params *params,
685 struct mlx5e_rq_param *rq_param)
687 int resv_size = BIT(mlx5e_shampo_get_log_rsrv_size(mdev, params)) * PAGE_SIZE;
688 u16 num_strides = BIT(mlx5e_mpwqe_get_log_num_strides(mdev, params, NULL));
689 int pkt_per_resv = BIT(mlx5e_shampo_get_log_pkt_per_rsrv(mdev, params));
690 u8 log_stride_sz = mlx5e_mpwqe_get_log_stride_size(mdev, params, NULL);
691 int wqe_size = BIT(log_stride_sz) * num_strides;
694 /* Assumption: hd_per_wqe % 8 == 0. */
695 hd_per_wqe = (wqe_size / resv_size) * pkt_per_resv;
696 mlx5_core_dbg(mdev, "%s hd_per_wqe = %d rsrv_size = %d wqe_size = %d pkt_per_resv = %d\n",
697 __func__, hd_per_wqe, resv_size, wqe_size, pkt_per_resv);
701 /* This function calculates the maximum number of headers entries that are needed
702 * for the WQ, this value is uesed to allocate the header buffer in HW, thus
703 * must be a pow of 2.
705 u32 mlx5e_shampo_hd_per_wq(struct mlx5_core_dev *mdev,
706 struct mlx5e_params *params,
707 struct mlx5e_rq_param *rq_param)
709 void *wqc = MLX5_ADDR_OF(rqc, rq_param->rqc, wq);
710 int wq_size = BIT(MLX5_GET(wq, wqc, log_wq_sz));
711 u32 hd_per_wqe, hd_per_wq;
713 hd_per_wqe = mlx5e_shampo_hd_per_wqe(mdev, params, rq_param);
714 hd_per_wq = roundup_pow_of_two(hd_per_wqe * wq_size);
718 static u32 mlx5e_shampo_icosq_sz(struct mlx5_core_dev *mdev,
719 struct mlx5e_params *params,
720 struct mlx5e_rq_param *rq_param)
722 int max_num_of_umr_per_wqe, max_hd_per_wqe, max_klm_per_umr, rest;
723 void *wqc = MLX5_ADDR_OF(rqc, rq_param->rqc, wq);
724 int wq_size = BIT(MLX5_GET(wq, wqc, log_wq_sz));
727 max_klm_per_umr = MLX5E_MAX_KLM_PER_WQE(mdev);
728 max_hd_per_wqe = mlx5e_shampo_hd_per_wqe(mdev, params, rq_param);
729 max_num_of_umr_per_wqe = max_hd_per_wqe / max_klm_per_umr;
730 rest = max_hd_per_wqe % max_klm_per_umr;
731 wqebbs = MLX5E_KLM_UMR_WQEBBS(max_klm_per_umr) * max_num_of_umr_per_wqe;
733 wqebbs += MLX5E_KLM_UMR_WQEBBS(rest);
738 static u8 mlx5e_build_icosq_log_wq_sz(struct mlx5_core_dev *mdev,
739 struct mlx5e_params *params,
740 struct mlx5e_rq_param *rqp)
744 /* MLX5_WQ_TYPE_CYCLIC */
745 if (params->rq_wq_type != MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ)
746 return MLX5E_PARAMS_MINIMUM_LOG_SQ_SIZE;
748 wqebbs = MLX5E_UMR_WQEBBS * BIT(mlx5e_get_rq_log_wq_sz(rqp->rqc));
749 if (params->packet_merge.type == MLX5E_PACKET_MERGE_SHAMPO)
750 wqebbs += mlx5e_shampo_icosq_sz(mdev, params, rqp);
751 return max_t(u8, MLX5E_PARAMS_MINIMUM_LOG_SQ_SIZE, order_base_2(wqebbs));
754 static u8 mlx5e_build_async_icosq_log_wq_sz(struct mlx5_core_dev *mdev)
756 if (mlx5e_accel_is_ktls_rx(mdev))
757 return MLX5E_PARAMS_DEFAULT_LOG_SQ_SIZE;
759 return MLX5E_PARAMS_MINIMUM_LOG_SQ_SIZE;
762 static void mlx5e_build_icosq_param(struct mlx5_core_dev *mdev,
764 struct mlx5e_sq_param *param)
766 void *sqc = param->sqc;
767 void *wq = MLX5_ADDR_OF(sqc, sqc, wq);
769 mlx5e_build_sq_param_common(mdev, param);
771 MLX5_SET(wq, wq, log_wq_sz, log_wq_size);
772 MLX5_SET(sqc, sqc, reg_umr, MLX5_CAP_ETH(mdev, reg_umr_sq));
773 mlx5e_build_ico_cq_param(mdev, log_wq_size, ¶m->cqp);
776 static void mlx5e_build_async_icosq_param(struct mlx5_core_dev *mdev,
778 struct mlx5e_sq_param *param)
780 void *sqc = param->sqc;
781 void *wq = MLX5_ADDR_OF(sqc, sqc, wq);
783 mlx5e_build_sq_param_common(mdev, param);
784 param->stop_room = mlx5e_stop_room_for_wqe(mdev, 1); /* for XSK NOP */
785 param->is_tls = mlx5e_accel_is_ktls_rx(mdev);
787 param->stop_room += mlx5e_stop_room_for_wqe(mdev, 1); /* for TLS RX resync NOP */
788 MLX5_SET(sqc, sqc, reg_umr, MLX5_CAP_ETH(mdev, reg_umr_sq));
789 MLX5_SET(wq, wq, log_wq_sz, log_wq_size);
790 mlx5e_build_ico_cq_param(mdev, log_wq_size, ¶m->cqp);
793 void mlx5e_build_xdpsq_param(struct mlx5_core_dev *mdev,
794 struct mlx5e_params *params,
795 struct mlx5e_sq_param *param)
797 void *sqc = param->sqc;
798 void *wq = MLX5_ADDR_OF(sqc, sqc, wq);
800 mlx5e_build_sq_param_common(mdev, param);
801 MLX5_SET(wq, wq, log_wq_sz, params->log_sq_size);
802 param->is_mpw = MLX5E_GET_PFLAG(params, MLX5E_PFLAG_XDP_TX_MPWQE);
803 mlx5e_build_tx_cq_param(mdev, params, ¶m->cqp);
806 int mlx5e_build_channel_param(struct mlx5_core_dev *mdev,
807 struct mlx5e_params *params,
809 struct mlx5e_channel_param *cparam)
811 u8 icosq_log_wq_sz, async_icosq_log_wq_sz;
814 err = mlx5e_build_rq_param(mdev, params, NULL, q_counter, &cparam->rq);
818 icosq_log_wq_sz = mlx5e_build_icosq_log_wq_sz(mdev, params, &cparam->rq);
819 async_icosq_log_wq_sz = mlx5e_build_async_icosq_log_wq_sz(mdev);
821 mlx5e_build_sq_param(mdev, params, &cparam->txq_sq);
822 mlx5e_build_xdpsq_param(mdev, params, &cparam->xdp_sq);
823 mlx5e_build_icosq_param(mdev, icosq_log_wq_sz, &cparam->icosq);
824 mlx5e_build_async_icosq_param(mdev, async_icosq_log_wq_sz, &cparam->async_icosq);