1 // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
2 /* Copyright (c) 2019 Mellanox Technologies. */
3
4 #include "en/params.h"
5 #include "en/txrx.h"
6 #include "en/port.h"
7 #include "en_accel/en_accel.h"
8 #include "accel/ipsec.h"
9 #include "fpga/ipsec.h"
10
mlx5e_rx_is_xdp(struct mlx5e_params * params,struct mlx5e_xsk_param * xsk)11 static bool mlx5e_rx_is_xdp(struct mlx5e_params *params,
12 struct mlx5e_xsk_param *xsk)
13 {
14 return params->xdp_prog || xsk;
15 }
16
mlx5e_get_linear_rq_headroom(struct mlx5e_params * params,struct mlx5e_xsk_param * xsk)17 u16 mlx5e_get_linear_rq_headroom(struct mlx5e_params *params,
18 struct mlx5e_xsk_param *xsk)
19 {
20 u16 headroom;
21
22 if (xsk)
23 return xsk->headroom;
24
25 headroom = NET_IP_ALIGN;
26 if (mlx5e_rx_is_xdp(params, xsk))
27 headroom += XDP_PACKET_HEADROOM;
28 else
29 headroom += MLX5_RX_HEADROOM;
30
31 return headroom;
32 }
33
mlx5e_rx_get_min_frag_sz(struct mlx5e_params * params,struct mlx5e_xsk_param * xsk)34 u32 mlx5e_rx_get_min_frag_sz(struct mlx5e_params *params,
35 struct mlx5e_xsk_param *xsk)
36 {
37 u32 hw_mtu = MLX5E_SW2HW_MTU(params, params->sw_mtu);
38 u16 linear_rq_headroom = mlx5e_get_linear_rq_headroom(params, xsk);
39
40 return linear_rq_headroom + hw_mtu;
41 }
42
mlx5e_rx_get_linear_frag_sz(struct mlx5e_params * params,struct mlx5e_xsk_param * xsk)43 static u32 mlx5e_rx_get_linear_frag_sz(struct mlx5e_params *params,
44 struct mlx5e_xsk_param *xsk)
45 {
46 u32 frag_sz = mlx5e_rx_get_min_frag_sz(params, xsk);
47
48 /* AF_XDP doesn't build SKBs in place. */
49 if (!xsk)
50 frag_sz = MLX5_SKB_FRAG_SZ(frag_sz);
51
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.
60 */
61 if (mlx5e_rx_is_xdp(params, xsk))
62 frag_sz = max_t(u32, frag_sz, PAGE_SIZE);
63
64 /* Even if we can go with a smaller fragment size, we must not put
65 * multiple packets into a single frame.
66 */
67 if (xsk)
68 frag_sz = max_t(u32, frag_sz, xsk->chunk_size);
69
70 return frag_sz;
71 }
72
mlx5e_mpwqe_log_pkts_per_wqe(struct mlx5e_params * params,struct mlx5e_xsk_param * xsk)73 u8 mlx5e_mpwqe_log_pkts_per_wqe(struct mlx5e_params *params,
74 struct mlx5e_xsk_param *xsk)
75 {
76 u32 linear_frag_sz = mlx5e_rx_get_linear_frag_sz(params, xsk);
77
78 return MLX5_MPWRQ_LOG_WQE_SZ - order_base_2(linear_frag_sz);
79 }
80
mlx5e_rx_is_linear_skb(struct mlx5e_params * params,struct mlx5e_xsk_param * xsk)81 bool mlx5e_rx_is_linear_skb(struct mlx5e_params *params,
82 struct mlx5e_xsk_param *xsk)
83 {
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.
86 */
87 u32 linear_frag_sz = max(mlx5e_rx_get_linear_frag_sz(params, xsk),
88 mlx5e_rx_get_linear_frag_sz(params, NULL));
89
90 return params->packet_merge.type == MLX5E_PACKET_MERGE_NONE &&
91 linear_frag_sz <= PAGE_SIZE;
92 }
93
mlx5e_verify_rx_mpwqe_strides(struct mlx5_core_dev * mdev,u8 log_stride_sz,u8 log_num_strides)94 bool mlx5e_verify_rx_mpwqe_strides(struct mlx5_core_dev *mdev,
95 u8 log_stride_sz, u8 log_num_strides)
96 {
97 if (log_stride_sz + log_num_strides != MLX5_MPWRQ_LOG_WQE_SZ)
98 return false;
99
100 if (log_stride_sz < MLX5_MPWQE_LOG_STRIDE_SZ_BASE ||
101 log_stride_sz > MLX5_MPWQE_LOG_STRIDE_SZ_MAX)
102 return false;
103
104 if (log_num_strides > MLX5_MPWQE_LOG_NUM_STRIDES_MAX)
105 return false;
106
107 if (MLX5_CAP_GEN(mdev, ext_stride_num_range))
108 return log_num_strides >= MLX5_MPWQE_LOG_NUM_STRIDES_EXT_BASE;
109
110 return log_num_strides >= MLX5_MPWQE_LOG_NUM_STRIDES_BASE;
111 }
112
mlx5e_rx_mpwqe_is_linear_skb(struct mlx5_core_dev * mdev,struct mlx5e_params * params,struct mlx5e_xsk_param * xsk)113 bool mlx5e_rx_mpwqe_is_linear_skb(struct mlx5_core_dev *mdev,
114 struct mlx5e_params *params,
115 struct mlx5e_xsk_param *xsk)
116 {
117 s8 log_num_strides;
118 u8 log_stride_sz;
119
120 if (!mlx5e_rx_is_linear_skb(params, xsk))
121 return false;
122
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;
125
126 return mlx5e_verify_rx_mpwqe_strides(mdev, log_stride_sz, log_num_strides);
127 }
128
mlx5e_mpwqe_get_log_rq_size(struct mlx5e_params * params,struct mlx5e_xsk_param * xsk)129 u8 mlx5e_mpwqe_get_log_rq_size(struct mlx5e_params *params,
130 struct mlx5e_xsk_param *xsk)
131 {
132 u8 log_pkts_per_wqe = mlx5e_mpwqe_log_pkts_per_wqe(params, xsk);
133
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;
138
139 return params->log_rq_mtu_frames - log_pkts_per_wqe;
140 }
141
mlx5e_mpwqe_get_log_stride_size(struct mlx5_core_dev * mdev,struct mlx5e_params * params,struct mlx5e_xsk_param * xsk)142 u8 mlx5e_mpwqe_get_log_stride_size(struct mlx5_core_dev *mdev,
143 struct mlx5e_params *params,
144 struct mlx5e_xsk_param *xsk)
145 {
146 if (mlx5e_rx_mpwqe_is_linear_skb(mdev, params, xsk))
147 return order_base_2(mlx5e_rx_get_linear_frag_sz(params, xsk));
148
149 return MLX5_MPWRQ_DEF_LOG_STRIDE_SZ(mdev);
150 }
151
mlx5e_mpwqe_get_log_num_strides(struct mlx5_core_dev * mdev,struct mlx5e_params * params,struct mlx5e_xsk_param * xsk)152 u8 mlx5e_mpwqe_get_log_num_strides(struct mlx5_core_dev *mdev,
153 struct mlx5e_params *params,
154 struct mlx5e_xsk_param *xsk)
155 {
156 return MLX5_MPWRQ_LOG_WQE_SZ -
157 mlx5e_mpwqe_get_log_stride_size(mdev, params, xsk);
158 }
159
mlx5e_get_rq_headroom(struct mlx5_core_dev * mdev,struct mlx5e_params * params,struct mlx5e_xsk_param * xsk)160 u16 mlx5e_get_rq_headroom(struct mlx5_core_dev *mdev,
161 struct mlx5e_params *params,
162 struct mlx5e_xsk_param *xsk)
163 {
164 bool is_linear_skb = (params->rq_wq_type == MLX5_WQ_TYPE_CYCLIC) ?
165 mlx5e_rx_is_linear_skb(params, xsk) :
166 mlx5e_rx_mpwqe_is_linear_skb(mdev, params, xsk);
167
168 return is_linear_skb || params->packet_merge.type == MLX5E_PACKET_MERGE_SHAMPO ?
169 mlx5e_get_linear_rq_headroom(params, xsk) : 0;
170 }
171
mlx5e_calc_sq_stop_room(struct mlx5_core_dev * mdev,struct mlx5e_params * params)172 u16 mlx5e_calc_sq_stop_room(struct mlx5_core_dev *mdev, struct mlx5e_params *params)
173 {
174 bool is_mpwqe = MLX5E_GET_PFLAG(params, MLX5E_PFLAG_SKB_TX_MPWQE);
175 u16 stop_room;
176
177 stop_room = mlx5e_tls_get_stop_room(mdev, params);
178 stop_room += mlx5e_stop_room_for_wqe(MLX5_SEND_WQE_MAX_WQEBBS);
179 if (is_mpwqe)
180 /* A MPWQE can take up to the maximum-sized WQE + all the normal
181 * stop room can be taken if a new packet breaks the active
182 * MPWQE session and allocates its WQEs right away.
183 */
184 stop_room += mlx5e_stop_room_for_wqe(MLX5_SEND_WQE_MAX_WQEBBS);
185
186 return stop_room;
187 }
188
mlx5e_validate_params(struct mlx5_core_dev * mdev,struct mlx5e_params * params)189 int mlx5e_validate_params(struct mlx5_core_dev *mdev, struct mlx5e_params *params)
190 {
191 size_t sq_size = 1 << params->log_sq_size;
192 u16 stop_room;
193
194 stop_room = mlx5e_calc_sq_stop_room(mdev, params);
195 if (stop_room >= sq_size) {
196 mlx5_core_err(mdev, "Stop room %u is bigger than the SQ size %zu\n",
197 stop_room, sq_size);
198 return -EINVAL;
199 }
200
201 return 0;
202 }
203
mlx5e_get_def_tx_moderation(u8 cq_period_mode)204 static struct dim_cq_moder mlx5e_get_def_tx_moderation(u8 cq_period_mode)
205 {
206 struct dim_cq_moder moder = {};
207
208 moder.cq_period_mode = cq_period_mode;
209 moder.pkts = MLX5E_PARAMS_DEFAULT_TX_CQ_MODERATION_PKTS;
210 moder.usec = MLX5E_PARAMS_DEFAULT_TX_CQ_MODERATION_USEC;
211 if (cq_period_mode == MLX5_CQ_PERIOD_MODE_START_FROM_CQE)
212 moder.usec = MLX5E_PARAMS_DEFAULT_TX_CQ_MODERATION_USEC_FROM_CQE;
213
214 return moder;
215 }
216
mlx5e_get_def_rx_moderation(u8 cq_period_mode)217 static struct dim_cq_moder mlx5e_get_def_rx_moderation(u8 cq_period_mode)
218 {
219 struct dim_cq_moder moder = {};
220
221 moder.cq_period_mode = cq_period_mode;
222 moder.pkts = MLX5E_PARAMS_DEFAULT_RX_CQ_MODERATION_PKTS;
223 moder.usec = MLX5E_PARAMS_DEFAULT_RX_CQ_MODERATION_USEC;
224 if (cq_period_mode == MLX5_CQ_PERIOD_MODE_START_FROM_CQE)
225 moder.usec = MLX5E_PARAMS_DEFAULT_RX_CQ_MODERATION_USEC_FROM_CQE;
226
227 return moder;
228 }
229
mlx5_to_net_dim_cq_period_mode(u8 cq_period_mode)230 static u8 mlx5_to_net_dim_cq_period_mode(u8 cq_period_mode)
231 {
232 return cq_period_mode == MLX5_CQ_PERIOD_MODE_START_FROM_CQE ?
233 DIM_CQ_PERIOD_MODE_START_FROM_CQE :
234 DIM_CQ_PERIOD_MODE_START_FROM_EQE;
235 }
236
mlx5e_reset_tx_moderation(struct mlx5e_params * params,u8 cq_period_mode)237 void mlx5e_reset_tx_moderation(struct mlx5e_params *params, u8 cq_period_mode)
238 {
239 if (params->tx_dim_enabled) {
240 u8 dim_period_mode = mlx5_to_net_dim_cq_period_mode(cq_period_mode);
241
242 params->tx_cq_moderation = net_dim_get_def_tx_moderation(dim_period_mode);
243 } else {
244 params->tx_cq_moderation = mlx5e_get_def_tx_moderation(cq_period_mode);
245 }
246 }
247
mlx5e_reset_rx_moderation(struct mlx5e_params * params,u8 cq_period_mode)248 void mlx5e_reset_rx_moderation(struct mlx5e_params *params, u8 cq_period_mode)
249 {
250 if (params->rx_dim_enabled) {
251 u8 dim_period_mode = mlx5_to_net_dim_cq_period_mode(cq_period_mode);
252
253 params->rx_cq_moderation = net_dim_get_def_rx_moderation(dim_period_mode);
254 } else {
255 params->rx_cq_moderation = mlx5e_get_def_rx_moderation(cq_period_mode);
256 }
257 }
258
mlx5e_set_tx_cq_mode_params(struct mlx5e_params * params,u8 cq_period_mode)259 void mlx5e_set_tx_cq_mode_params(struct mlx5e_params *params, u8 cq_period_mode)
260 {
261 mlx5e_reset_tx_moderation(params, cq_period_mode);
262 MLX5E_SET_PFLAG(params, MLX5E_PFLAG_TX_CQE_BASED_MODER,
263 params->tx_cq_moderation.cq_period_mode ==
264 MLX5_CQ_PERIOD_MODE_START_FROM_CQE);
265 }
266
mlx5e_set_rx_cq_mode_params(struct mlx5e_params * params,u8 cq_period_mode)267 void mlx5e_set_rx_cq_mode_params(struct mlx5e_params *params, u8 cq_period_mode)
268 {
269 mlx5e_reset_rx_moderation(params, cq_period_mode);
270 MLX5E_SET_PFLAG(params, MLX5E_PFLAG_RX_CQE_BASED_MODER,
271 params->rx_cq_moderation.cq_period_mode ==
272 MLX5_CQ_PERIOD_MODE_START_FROM_CQE);
273 }
274
slow_pci_heuristic(struct mlx5_core_dev * mdev)275 bool slow_pci_heuristic(struct mlx5_core_dev *mdev)
276 {
277 u32 link_speed = 0;
278 u32 pci_bw = 0;
279
280 mlx5e_port_max_linkspeed(mdev, &link_speed);
281 pci_bw = pcie_bandwidth_available(mdev->pdev, NULL, NULL, NULL);
282 mlx5_core_dbg_once(mdev, "Max link speed = %d, PCI BW = %d\n",
283 link_speed, pci_bw);
284
285 #define MLX5E_SLOW_PCI_RATIO (2)
286
287 return link_speed && pci_bw &&
288 link_speed > MLX5E_SLOW_PCI_RATIO * pci_bw;
289 }
290
mlx5e_striding_rq_possible(struct mlx5_core_dev * mdev,struct mlx5e_params * params)291 bool mlx5e_striding_rq_possible(struct mlx5_core_dev *mdev,
292 struct mlx5e_params *params)
293 {
294 if (!mlx5e_check_fragmented_striding_rq_cap(mdev))
295 return false;
296
297 if (mlx5_fpga_is_ipsec_device(mdev))
298 return false;
299
300 if (params->xdp_prog) {
301 /* XSK params are not considered here. If striding RQ is in use,
302 * and an XSK is being opened, mlx5e_rx_mpwqe_is_linear_skb will
303 * be called with the known XSK params.
304 */
305 if (!mlx5e_rx_mpwqe_is_linear_skb(mdev, params, NULL))
306 return false;
307 }
308
309 return true;
310 }
311
mlx5e_init_rq_type_params(struct mlx5_core_dev * mdev,struct mlx5e_params * params)312 void mlx5e_init_rq_type_params(struct mlx5_core_dev *mdev,
313 struct mlx5e_params *params)
314 {
315 params->log_rq_mtu_frames = is_kdump_kernel() ?
316 MLX5E_PARAMS_MINIMUM_LOG_RQ_SIZE :
317 MLX5E_PARAMS_DEFAULT_LOG_RQ_SIZE;
318
319 mlx5_core_info(mdev, "MLX5E: StrdRq(%d) RqSz(%ld) StrdSz(%ld) RxCqeCmprss(%d)\n",
320 params->rq_wq_type == MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ,
321 params->rq_wq_type == MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ ?
322 BIT(mlx5e_mpwqe_get_log_rq_size(params, NULL)) :
323 BIT(params->log_rq_mtu_frames),
324 BIT(mlx5e_mpwqe_get_log_stride_size(mdev, params, NULL)),
325 MLX5E_GET_PFLAG(params, MLX5E_PFLAG_RX_CQE_COMPRESS));
326 }
327
mlx5e_set_rq_type(struct mlx5_core_dev * mdev,struct mlx5e_params * params)328 void mlx5e_set_rq_type(struct mlx5_core_dev *mdev, struct mlx5e_params *params)
329 {
330 params->rq_wq_type = mlx5e_striding_rq_possible(mdev, params) &&
331 MLX5E_GET_PFLAG(params, MLX5E_PFLAG_RX_STRIDING_RQ) ?
332 MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ :
333 MLX5_WQ_TYPE_CYCLIC;
334 }
335
mlx5e_build_rq_params(struct mlx5_core_dev * mdev,struct mlx5e_params * params)336 void mlx5e_build_rq_params(struct mlx5_core_dev *mdev,
337 struct mlx5e_params *params)
338 {
339 /* Prefer Striding RQ, unless any of the following holds:
340 * - Striding RQ configuration is not possible/supported.
341 * - Slow PCI heuristic.
342 * - Legacy RQ would use linear SKB while Striding RQ would use non-linear.
343 *
344 * No XSK params: checking the availability of striding RQ in general.
345 */
346 if (!slow_pci_heuristic(mdev) &&
347 mlx5e_striding_rq_possible(mdev, params) &&
348 (mlx5e_rx_mpwqe_is_linear_skb(mdev, params, NULL) ||
349 !mlx5e_rx_is_linear_skb(params, NULL)))
350 MLX5E_SET_PFLAG(params, MLX5E_PFLAG_RX_STRIDING_RQ, true);
351 mlx5e_set_rq_type(mdev, params);
352 mlx5e_init_rq_type_params(mdev, params);
353 }
354
355 /* Build queue parameters */
356
mlx5e_build_create_cq_param(struct mlx5e_create_cq_param * ccp,struct mlx5e_channel * c)357 void mlx5e_build_create_cq_param(struct mlx5e_create_cq_param *ccp, struct mlx5e_channel *c)
358 {
359 *ccp = (struct mlx5e_create_cq_param) {
360 .napi = &c->napi,
361 .ch_stats = c->stats,
362 .node = cpu_to_node(c->cpu),
363 .ix = c->ix,
364 };
365 }
366
367 #define DEFAULT_FRAG_SIZE (2048)
368
mlx5e_build_rq_frags_info(struct mlx5_core_dev * mdev,struct mlx5e_params * params,struct mlx5e_xsk_param * xsk,struct mlx5e_rq_frags_info * info)369 static void mlx5e_build_rq_frags_info(struct mlx5_core_dev *mdev,
370 struct mlx5e_params *params,
371 struct mlx5e_xsk_param *xsk,
372 struct mlx5e_rq_frags_info *info)
373 {
374 u32 byte_count = MLX5E_SW2HW_MTU(params, params->sw_mtu);
375 int frag_size_max = DEFAULT_FRAG_SIZE;
376 u32 buf_size = 0;
377 int i;
378
379 if (mlx5_fpga_is_ipsec_device(mdev))
380 byte_count += MLX5E_METADATA_ETHER_LEN;
381
382 if (mlx5e_rx_is_linear_skb(params, xsk)) {
383 int frag_stride;
384
385 frag_stride = mlx5e_rx_get_linear_frag_sz(params, xsk);
386 frag_stride = roundup_pow_of_two(frag_stride);
387
388 info->arr[0].frag_size = byte_count;
389 info->arr[0].frag_stride = frag_stride;
390 info->num_frags = 1;
391 info->wqe_bulk = PAGE_SIZE / frag_stride;
392 goto out;
393 }
394
395 if (byte_count > PAGE_SIZE +
396 (MLX5E_MAX_RX_FRAGS - 1) * frag_size_max)
397 frag_size_max = PAGE_SIZE;
398
399 i = 0;
400 while (buf_size < byte_count) {
401 int frag_size = byte_count - buf_size;
402
403 if (i < MLX5E_MAX_RX_FRAGS - 1)
404 frag_size = min(frag_size, frag_size_max);
405
406 info->arr[i].frag_size = frag_size;
407 info->arr[i].frag_stride = roundup_pow_of_two(frag_size);
408
409 buf_size += frag_size;
410 i++;
411 }
412 info->num_frags = i;
413 /* number of different wqes sharing a page */
414 info->wqe_bulk = 1 + (info->num_frags % 2);
415
416 out:
417 info->wqe_bulk = max_t(u8, info->wqe_bulk, 8);
418 info->log_num_frags = order_base_2(info->num_frags);
419 }
420
mlx5e_get_rqwq_log_stride(u8 wq_type,int ndsegs)421 static u8 mlx5e_get_rqwq_log_stride(u8 wq_type, int ndsegs)
422 {
423 int sz = sizeof(struct mlx5_wqe_data_seg) * ndsegs;
424
425 switch (wq_type) {
426 case MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ:
427 sz += sizeof(struct mlx5e_rx_wqe_ll);
428 break;
429 default: /* MLX5_WQ_TYPE_CYCLIC */
430 sz += sizeof(struct mlx5e_rx_wqe_cyc);
431 }
432
433 return order_base_2(sz);
434 }
435
mlx5e_build_common_cq_param(struct mlx5_core_dev * mdev,struct mlx5e_cq_param * param)436 static void mlx5e_build_common_cq_param(struct mlx5_core_dev *mdev,
437 struct mlx5e_cq_param *param)
438 {
439 void *cqc = param->cqc;
440
441 MLX5_SET(cqc, cqc, uar_page, mdev->priv.uar->index);
442 if (MLX5_CAP_GEN(mdev, cqe_128_always) && cache_line_size() >= 128)
443 MLX5_SET(cqc, cqc, cqe_sz, CQE_STRIDE_128_PAD);
444 }
445
mlx5e_build_rx_cq_param(struct mlx5_core_dev * mdev,struct mlx5e_params * params,struct mlx5e_xsk_param * xsk,struct mlx5e_cq_param * param)446 static void mlx5e_build_rx_cq_param(struct mlx5_core_dev *mdev,
447 struct mlx5e_params *params,
448 struct mlx5e_xsk_param *xsk,
449 struct mlx5e_cq_param *param)
450 {
451 bool hw_stridx = false;
452 void *cqc = param->cqc;
453 u8 log_cq_size;
454
455 switch (params->rq_wq_type) {
456 case MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ:
457 log_cq_size = mlx5e_mpwqe_get_log_rq_size(params, xsk) +
458 mlx5e_mpwqe_get_log_num_strides(mdev, params, xsk);
459 hw_stridx = MLX5_CAP_GEN(mdev, mini_cqe_resp_stride_index);
460 break;
461 default: /* MLX5_WQ_TYPE_CYCLIC */
462 log_cq_size = params->log_rq_mtu_frames;
463 }
464
465 MLX5_SET(cqc, cqc, log_cq_size, log_cq_size);
466 if (MLX5E_GET_PFLAG(params, MLX5E_PFLAG_RX_CQE_COMPRESS)) {
467 MLX5_SET(cqc, cqc, mini_cqe_res_format, hw_stridx ?
468 MLX5_CQE_FORMAT_CSUM_STRIDX : MLX5_CQE_FORMAT_CSUM);
469 MLX5_SET(cqc, cqc, cqe_comp_en, 1);
470 }
471
472 mlx5e_build_common_cq_param(mdev, param);
473 param->cq_period_mode = params->rx_cq_moderation.cq_period_mode;
474 }
475
rq_end_pad_mode(struct mlx5_core_dev * mdev,struct mlx5e_params * params)476 static u8 rq_end_pad_mode(struct mlx5_core_dev *mdev, struct mlx5e_params *params)
477 {
478 bool lro_en = params->packet_merge.type == MLX5E_PACKET_MERGE_LRO;
479 bool ro = pcie_relaxed_ordering_enabled(mdev->pdev) &&
480 MLX5_CAP_GEN(mdev, relaxed_ordering_write);
481
482 return ro && lro_en ?
483 MLX5_WQ_END_PAD_MODE_NONE : MLX5_WQ_END_PAD_MODE_ALIGN;
484 }
485
mlx5e_build_rq_param(struct mlx5_core_dev * mdev,struct mlx5e_params * params,struct mlx5e_xsk_param * xsk,u16 q_counter,struct mlx5e_rq_param * param)486 int mlx5e_build_rq_param(struct mlx5_core_dev *mdev,
487 struct mlx5e_params *params,
488 struct mlx5e_xsk_param *xsk,
489 u16 q_counter,
490 struct mlx5e_rq_param *param)
491 {
492 void *rqc = param->rqc;
493 void *wq = MLX5_ADDR_OF(rqc, rqc, wq);
494 int ndsegs = 1;
495
496 switch (params->rq_wq_type) {
497 case MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ: {
498 u8 log_wqe_num_of_strides = mlx5e_mpwqe_get_log_num_strides(mdev, params, xsk);
499 u8 log_wqe_stride_size = mlx5e_mpwqe_get_log_stride_size(mdev, params, xsk);
500
501 if (!mlx5e_verify_rx_mpwqe_strides(mdev, log_wqe_stride_size,
502 log_wqe_num_of_strides)) {
503 mlx5_core_err(mdev,
504 "Bad RX MPWQE params: log_stride_size %u, log_num_strides %u\n",
505 log_wqe_stride_size, log_wqe_num_of_strides);
506 return -EINVAL;
507 }
508
509 MLX5_SET(wq, wq, log_wqe_num_of_strides,
510 log_wqe_num_of_strides - MLX5_MPWQE_LOG_NUM_STRIDES_BASE);
511 MLX5_SET(wq, wq, log_wqe_stride_size,
512 log_wqe_stride_size - MLX5_MPWQE_LOG_STRIDE_SZ_BASE);
513 MLX5_SET(wq, wq, log_wq_sz, mlx5e_mpwqe_get_log_rq_size(params, xsk));
514 break;
515 }
516 default: /* MLX5_WQ_TYPE_CYCLIC */
517 MLX5_SET(wq, wq, log_wq_sz, params->log_rq_mtu_frames);
518 mlx5e_build_rq_frags_info(mdev, params, xsk, ¶m->frags_info);
519 ndsegs = param->frags_info.num_frags;
520 }
521
522 MLX5_SET(wq, wq, wq_type, params->rq_wq_type);
523 MLX5_SET(wq, wq, end_padding_mode, rq_end_pad_mode(mdev, params));
524 MLX5_SET(wq, wq, log_wq_stride,
525 mlx5e_get_rqwq_log_stride(params->rq_wq_type, ndsegs));
526 MLX5_SET(wq, wq, pd, mdev->mlx5e_res.hw_objs.pdn);
527 MLX5_SET(rqc, rqc, counter_set_id, q_counter);
528 MLX5_SET(rqc, rqc, vsd, params->vlan_strip_disable);
529 MLX5_SET(rqc, rqc, scatter_fcs, params->scatter_fcs_en);
530
531 param->wq.buf_numa_node = dev_to_node(mlx5_core_dma_dev(mdev));
532 mlx5e_build_rx_cq_param(mdev, params, xsk, ¶m->cqp);
533
534 return 0;
535 }
536
mlx5e_build_drop_rq_param(struct mlx5_core_dev * mdev,u16 q_counter,struct mlx5e_rq_param * param)537 void mlx5e_build_drop_rq_param(struct mlx5_core_dev *mdev,
538 u16 q_counter,
539 struct mlx5e_rq_param *param)
540 {
541 void *rqc = param->rqc;
542 void *wq = MLX5_ADDR_OF(rqc, rqc, wq);
543
544 MLX5_SET(wq, wq, wq_type, MLX5_WQ_TYPE_CYCLIC);
545 MLX5_SET(wq, wq, log_wq_stride,
546 mlx5e_get_rqwq_log_stride(MLX5_WQ_TYPE_CYCLIC, 1));
547 MLX5_SET(rqc, rqc, counter_set_id, q_counter);
548
549 param->wq.buf_numa_node = dev_to_node(mlx5_core_dma_dev(mdev));
550 }
551
mlx5e_build_tx_cq_param(struct mlx5_core_dev * mdev,struct mlx5e_params * params,struct mlx5e_cq_param * param)552 void mlx5e_build_tx_cq_param(struct mlx5_core_dev *mdev,
553 struct mlx5e_params *params,
554 struct mlx5e_cq_param *param)
555 {
556 void *cqc = param->cqc;
557
558 MLX5_SET(cqc, cqc, log_cq_size, params->log_sq_size);
559
560 mlx5e_build_common_cq_param(mdev, param);
561 param->cq_period_mode = params->tx_cq_moderation.cq_period_mode;
562 }
563
mlx5e_build_sq_param_common(struct mlx5_core_dev * mdev,struct mlx5e_sq_param * param)564 void mlx5e_build_sq_param_common(struct mlx5_core_dev *mdev,
565 struct mlx5e_sq_param *param)
566 {
567 void *sqc = param->sqc;
568 void *wq = MLX5_ADDR_OF(sqc, sqc, wq);
569
570 MLX5_SET(wq, wq, log_wq_stride, ilog2(MLX5_SEND_WQE_BB));
571 MLX5_SET(wq, wq, pd, mdev->mlx5e_res.hw_objs.pdn);
572
573 param->wq.buf_numa_node = dev_to_node(mlx5_core_dma_dev(mdev));
574 }
575
mlx5e_build_sq_param(struct mlx5_core_dev * mdev,struct mlx5e_params * params,struct mlx5e_sq_param * param)576 void mlx5e_build_sq_param(struct mlx5_core_dev *mdev,
577 struct mlx5e_params *params,
578 struct mlx5e_sq_param *param)
579 {
580 void *sqc = param->sqc;
581 void *wq = MLX5_ADDR_OF(sqc, sqc, wq);
582 bool allow_swp;
583
584 allow_swp = mlx5_geneve_tx_allowed(mdev) ||
585 !!MLX5_IPSEC_DEV(mdev);
586 mlx5e_build_sq_param_common(mdev, param);
587 MLX5_SET(wq, wq, log_wq_sz, params->log_sq_size);
588 MLX5_SET(sqc, sqc, allow_swp, allow_swp);
589 param->is_mpw = MLX5E_GET_PFLAG(params, MLX5E_PFLAG_SKB_TX_MPWQE);
590 param->stop_room = mlx5e_calc_sq_stop_room(mdev, params);
591 mlx5e_build_tx_cq_param(mdev, params, ¶m->cqp);
592 }
593
mlx5e_build_ico_cq_param(struct mlx5_core_dev * mdev,u8 log_wq_size,struct mlx5e_cq_param * param)594 static void mlx5e_build_ico_cq_param(struct mlx5_core_dev *mdev,
595 u8 log_wq_size,
596 struct mlx5e_cq_param *param)
597 {
598 void *cqc = param->cqc;
599
600 MLX5_SET(cqc, cqc, log_cq_size, log_wq_size);
601
602 mlx5e_build_common_cq_param(mdev, param);
603
604 param->cq_period_mode = DIM_CQ_PERIOD_MODE_START_FROM_EQE;
605 }
606
mlx5e_get_rq_log_wq_sz(void * rqc)607 static u8 mlx5e_get_rq_log_wq_sz(void *rqc)
608 {
609 void *wq = MLX5_ADDR_OF(rqc, rqc, wq);
610
611 return MLX5_GET(wq, wq, log_wq_sz);
612 }
613
mlx5e_build_icosq_log_wq_sz(struct mlx5e_params * params,struct mlx5e_rq_param * rqp)614 static u8 mlx5e_build_icosq_log_wq_sz(struct mlx5e_params *params,
615 struct mlx5e_rq_param *rqp)
616 {
617 switch (params->rq_wq_type) {
618 case MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ:
619 return max_t(u8, MLX5E_PARAMS_MINIMUM_LOG_SQ_SIZE,
620 order_base_2(MLX5E_UMR_WQEBBS) +
621 mlx5e_get_rq_log_wq_sz(rqp->rqc));
622 default: /* MLX5_WQ_TYPE_CYCLIC */
623 return MLX5E_PARAMS_MINIMUM_LOG_SQ_SIZE;
624 }
625 }
626
mlx5e_build_async_icosq_log_wq_sz(struct mlx5_core_dev * mdev)627 static u8 mlx5e_build_async_icosq_log_wq_sz(struct mlx5_core_dev *mdev)
628 {
629 if (mlx5e_accel_is_ktls_rx(mdev))
630 return MLX5E_PARAMS_DEFAULT_LOG_SQ_SIZE;
631
632 return MLX5E_PARAMS_MINIMUM_LOG_SQ_SIZE;
633 }
634
mlx5e_build_icosq_param(struct mlx5_core_dev * mdev,u8 log_wq_size,struct mlx5e_sq_param * param)635 static void mlx5e_build_icosq_param(struct mlx5_core_dev *mdev,
636 u8 log_wq_size,
637 struct mlx5e_sq_param *param)
638 {
639 void *sqc = param->sqc;
640 void *wq = MLX5_ADDR_OF(sqc, sqc, wq);
641
642 mlx5e_build_sq_param_common(mdev, param);
643
644 MLX5_SET(wq, wq, log_wq_sz, log_wq_size);
645 MLX5_SET(sqc, sqc, reg_umr, MLX5_CAP_ETH(mdev, reg_umr_sq));
646 mlx5e_build_ico_cq_param(mdev, log_wq_size, ¶m->cqp);
647 }
648
mlx5e_build_async_icosq_param(struct mlx5_core_dev * mdev,u8 log_wq_size,struct mlx5e_sq_param * param)649 static void mlx5e_build_async_icosq_param(struct mlx5_core_dev *mdev,
650 u8 log_wq_size,
651 struct mlx5e_sq_param *param)
652 {
653 void *sqc = param->sqc;
654 void *wq = MLX5_ADDR_OF(sqc, sqc, wq);
655
656 mlx5e_build_sq_param_common(mdev, param);
657 param->stop_room = mlx5e_stop_room_for_wqe(1); /* for XSK NOP */
658 param->is_tls = mlx5e_accel_is_ktls_rx(mdev);
659 if (param->is_tls)
660 param->stop_room += mlx5e_stop_room_for_wqe(1); /* for TLS RX resync NOP */
661 MLX5_SET(sqc, sqc, reg_umr, MLX5_CAP_ETH(mdev, reg_umr_sq));
662 MLX5_SET(wq, wq, log_wq_sz, log_wq_size);
663 mlx5e_build_ico_cq_param(mdev, log_wq_size, ¶m->cqp);
664 }
665
mlx5e_build_xdpsq_param(struct mlx5_core_dev * mdev,struct mlx5e_params * params,struct mlx5e_sq_param * param)666 void mlx5e_build_xdpsq_param(struct mlx5_core_dev *mdev,
667 struct mlx5e_params *params,
668 struct mlx5e_sq_param *param)
669 {
670 void *sqc = param->sqc;
671 void *wq = MLX5_ADDR_OF(sqc, sqc, wq);
672
673 mlx5e_build_sq_param_common(mdev, param);
674 MLX5_SET(wq, wq, log_wq_sz, params->log_sq_size);
675 param->is_mpw = MLX5E_GET_PFLAG(params, MLX5E_PFLAG_XDP_TX_MPWQE);
676 mlx5e_build_tx_cq_param(mdev, params, ¶m->cqp);
677 }
678
mlx5e_build_channel_param(struct mlx5_core_dev * mdev,struct mlx5e_params * params,u16 q_counter,struct mlx5e_channel_param * cparam)679 int mlx5e_build_channel_param(struct mlx5_core_dev *mdev,
680 struct mlx5e_params *params,
681 u16 q_counter,
682 struct mlx5e_channel_param *cparam)
683 {
684 u8 icosq_log_wq_sz, async_icosq_log_wq_sz;
685 int err;
686
687 err = mlx5e_build_rq_param(mdev, params, NULL, q_counter, &cparam->rq);
688 if (err)
689 return err;
690
691 icosq_log_wq_sz = mlx5e_build_icosq_log_wq_sz(params, &cparam->rq);
692 async_icosq_log_wq_sz = mlx5e_build_async_icosq_log_wq_sz(mdev);
693
694 mlx5e_build_sq_param(mdev, params, &cparam->txq_sq);
695 mlx5e_build_xdpsq_param(mdev, params, &cparam->xdp_sq);
696 mlx5e_build_icosq_param(mdev, icosq_log_wq_sz, &cparam->icosq);
697 mlx5e_build_async_icosq_param(mdev, async_icosq_log_wq_sz, &cparam->async_icosq);
698
699 return 0;
700 }
701