1 // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
2 // Copyright (c) 2021, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
3
4 #include <linux/math64.h>
5 #include "lib/aso.h"
6 #include "en/tc/post_act.h"
7 #include "meter.h"
8 #include "en/tc_priv.h"
9
10 #define MLX5_START_COLOR_SHIFT 28
11 #define MLX5_METER_MODE_SHIFT 24
12 #define MLX5_CBS_EXP_SHIFT 24
13 #define MLX5_CBS_MAN_SHIFT 16
14 #define MLX5_CIR_EXP_SHIFT 8
15
16 /* cir = 8*(10^9)*cir_mantissa/(2^cir_exponent)) bits/s */
17 #define MLX5_CONST_CIR 8000000000ULL
18 #define MLX5_CALC_CIR(m, e) ((MLX5_CONST_CIR * (m)) >> (e))
19 #define MLX5_MAX_CIR ((MLX5_CONST_CIR * 0x100) - 1)
20
21 /* cbs = cbs_mantissa*2^cbs_exponent */
22 #define MLX5_CALC_CBS(m, e) ((m) << (e))
23 #define MLX5_MAX_CBS ((0x100ULL << 0x1F) - 1)
24 #define MLX5_MAX_HW_CBS 0x7FFFFFFF
25
26 struct mlx5e_flow_meter_aso_obj {
27 struct list_head entry;
28 int base_id;
29 int total_meters;
30
31 unsigned long meters_map[]; /* must be at the end of this struct */
32 };
33
34 struct mlx5e_flow_meters {
35 enum mlx5_flow_namespace_type ns_type;
36 struct mlx5_aso *aso;
37 struct mutex aso_lock; /* Protects aso operations */
38 int log_granularity;
39 u32 pdn;
40
41 DECLARE_HASHTABLE(hashtbl, 8);
42
43 struct mutex sync_lock; /* protect flow meter operations */
44 struct list_head partial_list;
45 struct list_head full_list;
46
47 struct mlx5_core_dev *mdev;
48 struct mlx5e_post_act *post_act;
49 };
50
51 static void
mlx5e_flow_meter_cir_calc(u64 cir,u8 * man,u8 * exp)52 mlx5e_flow_meter_cir_calc(u64 cir, u8 *man, u8 *exp)
53 {
54 s64 _cir, _delta, delta = S64_MAX;
55 u8 e, _man = 0, _exp = 0;
56 u64 m;
57
58 for (e = 0; e <= 0x1F; e++) { /* exp width 5bit */
59 m = cir << e;
60 if ((s64)m < 0) /* overflow */
61 break;
62 m = div64_u64(m, MLX5_CONST_CIR);
63 if (m > 0xFF) /* man width 8 bit */
64 continue;
65 _cir = MLX5_CALC_CIR(m, e);
66 _delta = cir - _cir;
67 if (_delta < delta) {
68 _man = m;
69 _exp = e;
70 if (!_delta)
71 goto found;
72 delta = _delta;
73 }
74 }
75
76 found:
77 *man = _man;
78 *exp = _exp;
79 }
80
81 static void
mlx5e_flow_meter_cbs_calc(u64 cbs,u8 * man,u8 * exp)82 mlx5e_flow_meter_cbs_calc(u64 cbs, u8 *man, u8 *exp)
83 {
84 s64 _cbs, _delta, delta = S64_MAX;
85 u8 e, _man = 0, _exp = 0;
86 u64 m;
87
88 for (e = 0; e <= 0x1F; e++) { /* exp width 5bit */
89 m = cbs >> e;
90 if (m > 0xFF) /* man width 8 bit */
91 continue;
92 _cbs = MLX5_CALC_CBS(m, e);
93 _delta = cbs - _cbs;
94 if (_delta < delta) {
95 _man = m;
96 _exp = e;
97 if (!_delta)
98 goto found;
99 delta = _delta;
100 }
101 }
102
103 found:
104 *man = _man;
105 *exp = _exp;
106 }
107
108 int
mlx5e_tc_meter_modify(struct mlx5_core_dev * mdev,struct mlx5e_flow_meter_handle * meter,struct mlx5e_flow_meter_params * meter_params)109 mlx5e_tc_meter_modify(struct mlx5_core_dev *mdev,
110 struct mlx5e_flow_meter_handle *meter,
111 struct mlx5e_flow_meter_params *meter_params)
112 {
113 struct mlx5_wqe_aso_ctrl_seg *aso_ctrl;
114 struct mlx5_wqe_aso_data_seg *aso_data;
115 struct mlx5e_flow_meters *flow_meters;
116 u8 cir_man, cir_exp, cbs_man, cbs_exp;
117 struct mlx5_aso_wqe *aso_wqe;
118 unsigned long expires;
119 struct mlx5_aso *aso;
120 u64 rate, burst;
121 u8 ds_cnt;
122 int err;
123
124 rate = meter_params->rate;
125 burst = meter_params->burst;
126
127 /* HW treats each packet as 128 bytes in PPS mode */
128 if (meter_params->mode == MLX5_RATE_LIMIT_PPS) {
129 rate <<= 10;
130 burst <<= 7;
131 }
132
133 if (!rate || rate > MLX5_MAX_CIR || !burst || burst > MLX5_MAX_CBS)
134 return -EINVAL;
135
136 /* HW has limitation of total 31 bits for cbs */
137 if (burst > MLX5_MAX_HW_CBS) {
138 mlx5_core_warn(mdev,
139 "burst(%lld) is too large, use HW allowed value(%d)\n",
140 burst, MLX5_MAX_HW_CBS);
141 burst = MLX5_MAX_HW_CBS;
142 }
143
144 mlx5_core_dbg(mdev, "meter mode=%d\n", meter_params->mode);
145 mlx5e_flow_meter_cir_calc(rate, &cir_man, &cir_exp);
146 mlx5_core_dbg(mdev, "rate=%lld, cir=%lld, exp=%d, man=%d\n",
147 rate, MLX5_CALC_CIR(cir_man, cir_exp), cir_exp, cir_man);
148 mlx5e_flow_meter_cbs_calc(burst, &cbs_man, &cbs_exp);
149 mlx5_core_dbg(mdev, "burst=%lld, cbs=%lld, exp=%d, man=%d\n",
150 burst, MLX5_CALC_CBS((u64)cbs_man, cbs_exp), cbs_exp, cbs_man);
151
152 if (!cir_man || !cbs_man)
153 return -EINVAL;
154
155 flow_meters = meter->flow_meters;
156 aso = flow_meters->aso;
157
158 mutex_lock(&flow_meters->aso_lock);
159 aso_wqe = mlx5_aso_get_wqe(aso);
160 ds_cnt = DIV_ROUND_UP(sizeof(struct mlx5_aso_wqe_data), MLX5_SEND_WQE_DS);
161 mlx5_aso_build_wqe(aso, ds_cnt, aso_wqe, meter->obj_id,
162 MLX5_ACCESS_ASO_OPC_MOD_FLOW_METER);
163
164 aso_ctrl = &aso_wqe->aso_ctrl;
165 aso_ctrl->data_mask_mode = MLX5_ASO_DATA_MASK_MODE_BYTEWISE_64BYTE << 6;
166 aso_ctrl->condition_1_0_operand = MLX5_ASO_ALWAYS_TRUE |
167 MLX5_ASO_ALWAYS_TRUE << 4;
168 aso_ctrl->data_offset_condition_operand = MLX5_ASO_LOGICAL_OR << 6;
169 aso_ctrl->data_mask = cpu_to_be64(0x80FFFFFFULL << (meter->idx ? 0 : 32));
170
171 aso_data = (struct mlx5_wqe_aso_data_seg *)(aso_wqe + 1);
172 memset(aso_data, 0, sizeof(*aso_data));
173 aso_data->bytewise_data[meter->idx * 8] = cpu_to_be32((0x1 << 31) | /* valid */
174 (MLX5_FLOW_METER_COLOR_GREEN << MLX5_START_COLOR_SHIFT));
175 if (meter_params->mode == MLX5_RATE_LIMIT_PPS)
176 aso_data->bytewise_data[meter->idx * 8] |=
177 cpu_to_be32(MLX5_FLOW_METER_MODE_NUM_PACKETS << MLX5_METER_MODE_SHIFT);
178 else
179 aso_data->bytewise_data[meter->idx * 8] |=
180 cpu_to_be32(MLX5_FLOW_METER_MODE_BYTES_IP_LENGTH << MLX5_METER_MODE_SHIFT);
181
182 aso_data->bytewise_data[meter->idx * 8 + 2] = cpu_to_be32((cbs_exp << MLX5_CBS_EXP_SHIFT) |
183 (cbs_man << MLX5_CBS_MAN_SHIFT) |
184 (cir_exp << MLX5_CIR_EXP_SHIFT) |
185 cir_man);
186
187 mlx5_aso_post_wqe(aso, true, &aso_wqe->ctrl);
188
189 /* With newer FW, the wait for the first ASO WQE is more than 2us, put the wait 10ms. */
190 expires = jiffies + msecs_to_jiffies(10);
191 do {
192 err = mlx5_aso_poll_cq(aso, true);
193 if (err)
194 usleep_range(2, 10);
195 } while (err && time_is_after_jiffies(expires));
196 mutex_unlock(&flow_meters->aso_lock);
197
198 return err;
199 }
200
201 static int
mlx5e_flow_meter_create_aso_obj(struct mlx5e_flow_meters * flow_meters,int * obj_id)202 mlx5e_flow_meter_create_aso_obj(struct mlx5e_flow_meters *flow_meters, int *obj_id)
203 {
204 u32 in[MLX5_ST_SZ_DW(create_flow_meter_aso_obj_in)] = {};
205 u32 out[MLX5_ST_SZ_DW(general_obj_out_cmd_hdr)];
206 struct mlx5_core_dev *mdev = flow_meters->mdev;
207 void *obj, *param;
208 int err;
209
210 MLX5_SET(general_obj_in_cmd_hdr, in, opcode, MLX5_CMD_OP_CREATE_GENERAL_OBJECT);
211 MLX5_SET(general_obj_in_cmd_hdr, in, obj_type,
212 MLX5_GENERAL_OBJECT_TYPES_FLOW_METER_ASO);
213 param = MLX5_ADDR_OF(general_obj_in_cmd_hdr, in, op_param);
214 MLX5_SET(general_obj_create_param, param, log_obj_range,
215 flow_meters->log_granularity);
216
217 obj = MLX5_ADDR_OF(create_flow_meter_aso_obj_in, in, flow_meter_aso_obj);
218 MLX5_SET(flow_meter_aso_obj, obj, meter_aso_access_pd, flow_meters->pdn);
219
220 err = mlx5_cmd_exec(mdev, in, sizeof(in), out, sizeof(out));
221 if (!err) {
222 *obj_id = MLX5_GET(general_obj_out_cmd_hdr, out, obj_id);
223 mlx5_core_dbg(mdev, "flow meter aso obj(0x%x) created\n", *obj_id);
224 }
225
226 return err;
227 }
228
229 static void
mlx5e_flow_meter_destroy_aso_obj(struct mlx5_core_dev * mdev,u32 obj_id)230 mlx5e_flow_meter_destroy_aso_obj(struct mlx5_core_dev *mdev, u32 obj_id)
231 {
232 u32 in[MLX5_ST_SZ_DW(general_obj_in_cmd_hdr)] = {};
233 u32 out[MLX5_ST_SZ_DW(general_obj_out_cmd_hdr)];
234
235 MLX5_SET(general_obj_in_cmd_hdr, in, opcode, MLX5_CMD_OP_DESTROY_GENERAL_OBJECT);
236 MLX5_SET(general_obj_in_cmd_hdr, in, obj_type,
237 MLX5_GENERAL_OBJECT_TYPES_FLOW_METER_ASO);
238 MLX5_SET(general_obj_in_cmd_hdr, in, obj_id, obj_id);
239
240 mlx5_cmd_exec(mdev, in, sizeof(in), out, sizeof(out));
241 mlx5_core_dbg(mdev, "flow meter aso obj(0x%x) destroyed\n", obj_id);
242 }
243
244 static struct mlx5e_flow_meter_handle *
__mlx5e_flow_meter_alloc(struct mlx5e_flow_meters * flow_meters,bool alloc_aso)245 __mlx5e_flow_meter_alloc(struct mlx5e_flow_meters *flow_meters, bool alloc_aso)
246 {
247 struct mlx5_core_dev *mdev = flow_meters->mdev;
248 struct mlx5e_flow_meter_aso_obj *meters_obj;
249 struct mlx5e_flow_meter_handle *meter;
250 struct mlx5_fc *counter;
251 int err, pos, total;
252 u32 id;
253
254 meter = kzalloc(sizeof(*meter), GFP_KERNEL);
255 if (!meter)
256 return ERR_PTR(-ENOMEM);
257
258 counter = mlx5_fc_create(mdev, true);
259 if (IS_ERR(counter)) {
260 err = PTR_ERR(counter);
261 goto err_drop_counter;
262 }
263 meter->drop_counter = counter;
264
265 counter = mlx5_fc_create(mdev, true);
266 if (IS_ERR(counter)) {
267 err = PTR_ERR(counter);
268 goto err_act_counter;
269 }
270 meter->act_counter = counter;
271
272 if (!alloc_aso)
273 goto no_aso;
274
275 meters_obj = list_first_entry_or_null(&flow_meters->partial_list,
276 struct mlx5e_flow_meter_aso_obj,
277 entry);
278 /* 2 meters in one object */
279 total = 1 << (flow_meters->log_granularity + 1);
280 if (!meters_obj) {
281 err = mlx5e_flow_meter_create_aso_obj(flow_meters, &id);
282 if (err) {
283 mlx5_core_err(mdev, "Failed to create flow meter ASO object\n");
284 goto err_create;
285 }
286
287 meters_obj = kzalloc(sizeof(*meters_obj) + BITS_TO_BYTES(total),
288 GFP_KERNEL);
289 if (!meters_obj) {
290 err = -ENOMEM;
291 goto err_mem;
292 }
293
294 meters_obj->base_id = id;
295 meters_obj->total_meters = total;
296 list_add(&meters_obj->entry, &flow_meters->partial_list);
297 pos = 0;
298 } else {
299 pos = find_first_zero_bit(meters_obj->meters_map, total);
300 if (bitmap_weight(meters_obj->meters_map, total) == total - 1) {
301 list_del(&meters_obj->entry);
302 list_add(&meters_obj->entry, &flow_meters->full_list);
303 }
304 }
305
306 bitmap_set(meters_obj->meters_map, pos, 1);
307 meter->meters_obj = meters_obj;
308 meter->obj_id = meters_obj->base_id + pos / 2;
309 meter->idx = pos % 2;
310
311 no_aso:
312 meter->flow_meters = flow_meters;
313 mlx5_core_dbg(mdev, "flow meter allocated, obj_id=0x%x, index=%d\n",
314 meter->obj_id, meter->idx);
315
316 return meter;
317
318 err_mem:
319 mlx5e_flow_meter_destroy_aso_obj(mdev, id);
320 err_create:
321 mlx5_fc_destroy(mdev, meter->act_counter);
322 err_act_counter:
323 mlx5_fc_destroy(mdev, meter->drop_counter);
324 err_drop_counter:
325 kfree(meter);
326 return ERR_PTR(err);
327 }
328
329 static void
__mlx5e_flow_meter_free(struct mlx5e_flow_meter_handle * meter)330 __mlx5e_flow_meter_free(struct mlx5e_flow_meter_handle *meter)
331 {
332 struct mlx5e_flow_meters *flow_meters = meter->flow_meters;
333 struct mlx5_core_dev *mdev = flow_meters->mdev;
334 struct mlx5e_flow_meter_aso_obj *meters_obj;
335 int n, pos;
336
337 mlx5_fc_destroy(mdev, meter->act_counter);
338 mlx5_fc_destroy(mdev, meter->drop_counter);
339
340 if (meter->params.mtu)
341 goto out_no_aso;
342
343 meters_obj = meter->meters_obj;
344 pos = (meter->obj_id - meters_obj->base_id) * 2 + meter->idx;
345 bitmap_clear(meters_obj->meters_map, pos, 1);
346 n = bitmap_weight(meters_obj->meters_map, meters_obj->total_meters);
347 if (n == 0) {
348 list_del(&meters_obj->entry);
349 mlx5e_flow_meter_destroy_aso_obj(mdev, meters_obj->base_id);
350 kfree(meters_obj);
351 } else if (n == meters_obj->total_meters - 1) {
352 list_del(&meters_obj->entry);
353 list_add(&meters_obj->entry, &flow_meters->partial_list);
354 }
355
356 out_no_aso:
357 mlx5_core_dbg(mdev, "flow meter freed, obj_id=0x%x, index=%d\n",
358 meter->obj_id, meter->idx);
359 kfree(meter);
360 }
361
362 static struct mlx5e_flow_meter_handle *
__mlx5e_tc_meter_get(struct mlx5e_flow_meters * flow_meters,u32 index)363 __mlx5e_tc_meter_get(struct mlx5e_flow_meters *flow_meters, u32 index)
364 {
365 struct mlx5e_flow_meter_handle *meter;
366
367 hash_for_each_possible(flow_meters->hashtbl, meter, hlist, index)
368 if (meter->params.index == index)
369 goto add_ref;
370
371 return ERR_PTR(-ENOENT);
372
373 add_ref:
374 meter->refcnt++;
375
376 return meter;
377 }
378
379 struct mlx5e_flow_meter_handle *
mlx5e_tc_meter_get(struct mlx5_core_dev * mdev,struct mlx5e_flow_meter_params * params)380 mlx5e_tc_meter_get(struct mlx5_core_dev *mdev, struct mlx5e_flow_meter_params *params)
381 {
382 struct mlx5e_flow_meters *flow_meters;
383 struct mlx5e_flow_meter_handle *meter;
384
385 flow_meters = mlx5e_get_flow_meters(mdev);
386 if (!flow_meters)
387 return ERR_PTR(-EOPNOTSUPP);
388
389 mutex_lock(&flow_meters->sync_lock);
390 meter = __mlx5e_tc_meter_get(flow_meters, params->index);
391 mutex_unlock(&flow_meters->sync_lock);
392
393 return meter;
394 }
395
396 static void
__mlx5e_tc_meter_put(struct mlx5e_flow_meter_handle * meter)397 __mlx5e_tc_meter_put(struct mlx5e_flow_meter_handle *meter)
398 {
399 if (--meter->refcnt == 0) {
400 hash_del(&meter->hlist);
401 __mlx5e_flow_meter_free(meter);
402 }
403 }
404
405 void
mlx5e_tc_meter_put(struct mlx5e_flow_meter_handle * meter)406 mlx5e_tc_meter_put(struct mlx5e_flow_meter_handle *meter)
407 {
408 struct mlx5e_flow_meters *flow_meters = meter->flow_meters;
409
410 mutex_lock(&flow_meters->sync_lock);
411 __mlx5e_tc_meter_put(meter);
412 mutex_unlock(&flow_meters->sync_lock);
413 }
414
415 static struct mlx5e_flow_meter_handle *
mlx5e_tc_meter_alloc(struct mlx5e_flow_meters * flow_meters,struct mlx5e_flow_meter_params * params)416 mlx5e_tc_meter_alloc(struct mlx5e_flow_meters *flow_meters,
417 struct mlx5e_flow_meter_params *params)
418 {
419 struct mlx5e_flow_meter_handle *meter;
420
421 meter = __mlx5e_flow_meter_alloc(flow_meters, !params->mtu);
422 if (IS_ERR(meter))
423 return meter;
424
425 hash_add(flow_meters->hashtbl, &meter->hlist, params->index);
426 meter->params.index = params->index;
427 meter->params.mtu = params->mtu;
428 meter->refcnt++;
429
430 return meter;
431 }
432
433 static int
__mlx5e_tc_meter_update(struct mlx5e_flow_meter_handle * meter,struct mlx5e_flow_meter_params * params)434 __mlx5e_tc_meter_update(struct mlx5e_flow_meter_handle *meter,
435 struct mlx5e_flow_meter_params *params)
436 {
437 struct mlx5_core_dev *mdev = meter->flow_meters->mdev;
438 int err = 0;
439
440 if (meter->params.mode != params->mode || meter->params.rate != params->rate ||
441 meter->params.burst != params->burst) {
442 err = mlx5e_tc_meter_modify(mdev, meter, params);
443 if (err)
444 goto out;
445
446 meter->params.mode = params->mode;
447 meter->params.rate = params->rate;
448 meter->params.burst = params->burst;
449 }
450
451 out:
452 return err;
453 }
454
455 int
mlx5e_tc_meter_update(struct mlx5e_flow_meter_handle * meter,struct mlx5e_flow_meter_params * params)456 mlx5e_tc_meter_update(struct mlx5e_flow_meter_handle *meter,
457 struct mlx5e_flow_meter_params *params)
458 {
459 struct mlx5_core_dev *mdev = meter->flow_meters->mdev;
460 struct mlx5e_flow_meters *flow_meters;
461 int err;
462
463 flow_meters = mlx5e_get_flow_meters(mdev);
464 if (!flow_meters)
465 return -EOPNOTSUPP;
466
467 mutex_lock(&flow_meters->sync_lock);
468 err = __mlx5e_tc_meter_update(meter, params);
469 mutex_unlock(&flow_meters->sync_lock);
470 return err;
471 }
472
473 struct mlx5e_flow_meter_handle *
mlx5e_tc_meter_replace(struct mlx5_core_dev * mdev,struct mlx5e_flow_meter_params * params)474 mlx5e_tc_meter_replace(struct mlx5_core_dev *mdev, struct mlx5e_flow_meter_params *params)
475 {
476 struct mlx5e_flow_meters *flow_meters;
477 struct mlx5e_flow_meter_handle *meter;
478 int err;
479
480 flow_meters = mlx5e_get_flow_meters(mdev);
481 if (!flow_meters)
482 return ERR_PTR(-EOPNOTSUPP);
483
484 mutex_lock(&flow_meters->sync_lock);
485 meter = __mlx5e_tc_meter_get(flow_meters, params->index);
486 if (IS_ERR(meter)) {
487 meter = mlx5e_tc_meter_alloc(flow_meters, params);
488 if (IS_ERR(meter)) {
489 err = PTR_ERR(meter);
490 goto err_get;
491 }
492 }
493
494 err = __mlx5e_tc_meter_update(meter, params);
495 if (err)
496 goto err_update;
497
498 mutex_unlock(&flow_meters->sync_lock);
499 return meter;
500
501 err_update:
502 __mlx5e_tc_meter_put(meter);
503 err_get:
504 mutex_unlock(&flow_meters->sync_lock);
505 return ERR_PTR(err);
506 }
507
508 enum mlx5_flow_namespace_type
mlx5e_tc_meter_get_namespace(struct mlx5e_flow_meters * flow_meters)509 mlx5e_tc_meter_get_namespace(struct mlx5e_flow_meters *flow_meters)
510 {
511 return flow_meters->ns_type;
512 }
513
514 struct mlx5e_flow_meters *
mlx5e_flow_meters_init(struct mlx5e_priv * priv,enum mlx5_flow_namespace_type ns_type,struct mlx5e_post_act * post_act)515 mlx5e_flow_meters_init(struct mlx5e_priv *priv,
516 enum mlx5_flow_namespace_type ns_type,
517 struct mlx5e_post_act *post_act)
518 {
519 struct mlx5_core_dev *mdev = priv->mdev;
520 struct mlx5e_flow_meters *flow_meters;
521 int err;
522
523 if (!(MLX5_CAP_GEN_64(mdev, general_obj_types) &
524 MLX5_HCA_CAP_GENERAL_OBJECT_TYPES_FLOW_METER_ASO))
525 return ERR_PTR(-EOPNOTSUPP);
526
527 if (IS_ERR_OR_NULL(post_act)) {
528 netdev_dbg(priv->netdev,
529 "flow meter offload is not supported, post action is missing\n");
530 return ERR_PTR(-EOPNOTSUPP);
531 }
532
533 flow_meters = kzalloc(sizeof(*flow_meters), GFP_KERNEL);
534 if (!flow_meters)
535 return ERR_PTR(-ENOMEM);
536
537 err = mlx5_core_alloc_pd(mdev, &flow_meters->pdn);
538 if (err) {
539 mlx5_core_err(mdev, "Failed to alloc pd for flow meter aso, err=%d\n", err);
540 goto err_out;
541 }
542
543 flow_meters->aso = mlx5_aso_create(mdev, flow_meters->pdn);
544 if (IS_ERR(flow_meters->aso)) {
545 mlx5_core_warn(mdev, "Failed to create aso wqe for flow meter\n");
546 err = PTR_ERR(flow_meters->aso);
547 goto err_sq;
548 }
549
550 mutex_init(&flow_meters->sync_lock);
551 INIT_LIST_HEAD(&flow_meters->partial_list);
552 INIT_LIST_HEAD(&flow_meters->full_list);
553
554 flow_meters->ns_type = ns_type;
555 flow_meters->mdev = mdev;
556 flow_meters->post_act = post_act;
557 mutex_init(&flow_meters->aso_lock);
558 flow_meters->log_granularity = min_t(int, 6,
559 MLX5_CAP_QOS(mdev, log_meter_aso_max_alloc));
560
561 return flow_meters;
562
563 err_sq:
564 mlx5_core_dealloc_pd(mdev, flow_meters->pdn);
565 err_out:
566 kfree(flow_meters);
567 return ERR_PTR(err);
568 }
569
570 void
mlx5e_flow_meters_cleanup(struct mlx5e_flow_meters * flow_meters)571 mlx5e_flow_meters_cleanup(struct mlx5e_flow_meters *flow_meters)
572 {
573 if (IS_ERR_OR_NULL(flow_meters))
574 return;
575
576 mlx5_aso_destroy(flow_meters->aso);
577 mlx5_core_dealloc_pd(flow_meters->mdev, flow_meters->pdn);
578 kfree(flow_meters);
579 }
580
581 void
mlx5e_tc_meter_get_stats(struct mlx5e_flow_meter_handle * meter,u64 * bytes,u64 * packets,u64 * drops,u64 * lastuse)582 mlx5e_tc_meter_get_stats(struct mlx5e_flow_meter_handle *meter,
583 u64 *bytes, u64 *packets, u64 *drops, u64 *lastuse)
584 {
585 u64 bytes1, packets1, lastuse1;
586 u64 bytes2, packets2, lastuse2;
587
588 mlx5_fc_query_cached(meter->act_counter, &bytes1, &packets1, &lastuse1);
589 mlx5_fc_query_cached(meter->drop_counter, &bytes2, &packets2, &lastuse2);
590
591 *bytes = bytes1 + bytes2;
592 *packets = packets1 + packets2;
593 *drops = packets2;
594 *lastuse = max_t(u64, lastuse1, lastuse2);
595 }
596