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Merge remote-tracking branch 'qcom/for-next'
[deliverable/linux.git] / drivers / net / ethernet / mellanox / mlx4 / en_dcb_nl.c
1 /*
2 * Copyright (c) 2011 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
34 #include <linux/dcbnl.h>
35 #include <linux/math64.h>
36
37 #include "mlx4_en.h"
38 #include "fw_qos.h"
39
40 enum {
41 MLX4_CEE_STATE_DOWN = 0,
42 MLX4_CEE_STATE_UP = 1,
43 };
44
45 /* Definitions for QCN
46 */
47
48 struct mlx4_congestion_control_mb_prio_802_1_qau_params {
49 __be32 modify_enable_high;
50 __be32 modify_enable_low;
51 __be32 reserved1;
52 __be32 extended_enable;
53 __be32 rppp_max_rps;
54 __be32 rpg_time_reset;
55 __be32 rpg_byte_reset;
56 __be32 rpg_threshold;
57 __be32 rpg_max_rate;
58 __be32 rpg_ai_rate;
59 __be32 rpg_hai_rate;
60 __be32 rpg_gd;
61 __be32 rpg_min_dec_fac;
62 __be32 rpg_min_rate;
63 __be32 max_time_rise;
64 __be32 max_byte_rise;
65 __be32 max_qdelta;
66 __be32 min_qoffset;
67 __be32 gd_coefficient;
68 __be32 reserved2[5];
69 __be32 cp_sample_base;
70 __be32 reserved3[39];
71 };
72
73 struct mlx4_congestion_control_mb_prio_802_1_qau_statistics {
74 __be64 rppp_rp_centiseconds;
75 __be32 reserved1;
76 __be32 ignored_cnm;
77 __be32 rppp_created_rps;
78 __be32 estimated_total_rate;
79 __be32 max_active_rate_limiter_index;
80 __be32 dropped_cnms_busy_fw;
81 __be32 reserved2;
82 __be32 cnms_handled_successfully;
83 __be32 min_total_limiters_rate;
84 __be32 max_total_limiters_rate;
85 __be32 reserved3[4];
86 };
87
88 static u8 mlx4_en_dcbnl_getcap(struct net_device *dev, int capid, u8 *cap)
89 {
90 struct mlx4_en_priv *priv = netdev_priv(dev);
91
92 switch (capid) {
93 case DCB_CAP_ATTR_PFC:
94 *cap = true;
95 break;
96 case DCB_CAP_ATTR_DCBX:
97 *cap = priv->dcbx_cap;
98 break;
99 case DCB_CAP_ATTR_PFC_TCS:
100 *cap = 1 << mlx4_max_tc(priv->mdev->dev);
101 break;
102 default:
103 *cap = false;
104 break;
105 }
106
107 return 0;
108 }
109
110 static u8 mlx4_en_dcbnl_getpfcstate(struct net_device *netdev)
111 {
112 struct mlx4_en_priv *priv = netdev_priv(netdev);
113
114 return priv->cee_config.pfc_state;
115 }
116
117 static void mlx4_en_dcbnl_setpfcstate(struct net_device *netdev, u8 state)
118 {
119 struct mlx4_en_priv *priv = netdev_priv(netdev);
120
121 priv->cee_config.pfc_state = state;
122 }
123
124 static void mlx4_en_dcbnl_get_pfc_cfg(struct net_device *netdev, int priority,
125 u8 *setting)
126 {
127 struct mlx4_en_priv *priv = netdev_priv(netdev);
128
129 *setting = priv->cee_config.dcb_pfc[priority];
130 }
131
132 static void mlx4_en_dcbnl_set_pfc_cfg(struct net_device *netdev, int priority,
133 u8 setting)
134 {
135 struct mlx4_en_priv *priv = netdev_priv(netdev);
136
137 priv->cee_config.dcb_pfc[priority] = setting;
138 priv->cee_config.pfc_state = true;
139 }
140
141 static int mlx4_en_dcbnl_getnumtcs(struct net_device *netdev, int tcid, u8 *num)
142 {
143 struct mlx4_en_priv *priv = netdev_priv(netdev);
144
145 if (!(priv->flags & MLX4_EN_FLAG_DCB_ENABLED))
146 return -EINVAL;
147
148 if (tcid == DCB_NUMTCS_ATTR_PFC)
149 *num = mlx4_max_tc(priv->mdev->dev);
150 else
151 *num = 0;
152
153 return 0;
154 }
155
156 static u8 mlx4_en_dcbnl_set_all(struct net_device *netdev)
157 {
158 struct mlx4_en_priv *priv = netdev_priv(netdev);
159 struct mlx4_en_dev *mdev = priv->mdev;
160
161 if (!(priv->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
162 return 1;
163
164 if (priv->cee_config.pfc_state) {
165 int tc;
166
167 priv->prof->rx_pause = 0;
168 priv->prof->tx_pause = 0;
169 for (tc = 0; tc < CEE_DCBX_MAX_PRIO; tc++) {
170 u8 tc_mask = 1 << tc;
171
172 switch (priv->cee_config.dcb_pfc[tc]) {
173 case pfc_disabled:
174 priv->prof->tx_ppp &= ~tc_mask;
175 priv->prof->rx_ppp &= ~tc_mask;
176 break;
177 case pfc_enabled_full:
178 priv->prof->tx_ppp |= tc_mask;
179 priv->prof->rx_ppp |= tc_mask;
180 break;
181 case pfc_enabled_tx:
182 priv->prof->tx_ppp |= tc_mask;
183 priv->prof->rx_ppp &= ~tc_mask;
184 break;
185 case pfc_enabled_rx:
186 priv->prof->tx_ppp &= ~tc_mask;
187 priv->prof->rx_ppp |= tc_mask;
188 break;
189 default:
190 break;
191 }
192 }
193 en_dbg(DRV, priv, "Set pfc on\n");
194 } else {
195 priv->prof->rx_pause = 1;
196 priv->prof->tx_pause = 1;
197 en_dbg(DRV, priv, "Set pfc off\n");
198 }
199
200 if (mlx4_SET_PORT_general(mdev->dev, priv->port,
201 priv->rx_skb_size + ETH_FCS_LEN,
202 priv->prof->tx_pause,
203 priv->prof->tx_ppp,
204 priv->prof->rx_pause,
205 priv->prof->rx_ppp)) {
206 en_err(priv, "Failed setting pause params\n");
207 return 1;
208 }
209
210 return 0;
211 }
212
213 static u8 mlx4_en_dcbnl_get_state(struct net_device *dev)
214 {
215 struct mlx4_en_priv *priv = netdev_priv(dev);
216
217 if (priv->flags & MLX4_EN_FLAG_DCB_ENABLED)
218 return MLX4_CEE_STATE_UP;
219
220 return MLX4_CEE_STATE_DOWN;
221 }
222
223 static u8 mlx4_en_dcbnl_set_state(struct net_device *dev, u8 state)
224 {
225 struct mlx4_en_priv *priv = netdev_priv(dev);
226 int num_tcs = 0;
227
228 if (!(priv->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
229 return 1;
230
231 if (!!(state) == !!(priv->flags & MLX4_EN_FLAG_DCB_ENABLED))
232 return 0;
233
234 if (state) {
235 priv->flags |= MLX4_EN_FLAG_DCB_ENABLED;
236 num_tcs = IEEE_8021QAZ_MAX_TCS;
237 } else {
238 priv->flags &= ~MLX4_EN_FLAG_DCB_ENABLED;
239 }
240
241 if (mlx4_en_setup_tc(dev, num_tcs))
242 return 1;
243
244 return 0;
245 }
246
247 /* On success returns a non-zero 802.1p user priority bitmap
248 * otherwise returns 0 as the invalid user priority bitmap to
249 * indicate an error.
250 */
251 static int mlx4_en_dcbnl_getapp(struct net_device *netdev, u8 idtype, u16 id)
252 {
253 struct mlx4_en_priv *priv = netdev_priv(netdev);
254 struct dcb_app app = {
255 .selector = idtype,
256 .protocol = id,
257 };
258 if (!(priv->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
259 return 0;
260
261 return dcb_getapp(netdev, &app);
262 }
263
264 static int mlx4_en_dcbnl_setapp(struct net_device *netdev, u8 idtype,
265 u16 id, u8 up)
266 {
267 struct mlx4_en_priv *priv = netdev_priv(netdev);
268 struct dcb_app app;
269
270 if (!(priv->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
271 return -EINVAL;
272
273 memset(&app, 0, sizeof(struct dcb_app));
274 app.selector = idtype;
275 app.protocol = id;
276 app.priority = up;
277
278 return dcb_setapp(netdev, &app);
279 }
280
281 static int mlx4_en_dcbnl_ieee_getets(struct net_device *dev,
282 struct ieee_ets *ets)
283 {
284 struct mlx4_en_priv *priv = netdev_priv(dev);
285 struct ieee_ets *my_ets = &priv->ets;
286
287 if (!my_ets)
288 return -EINVAL;
289
290 ets->ets_cap = IEEE_8021QAZ_MAX_TCS;
291 ets->cbs = my_ets->cbs;
292 memcpy(ets->tc_tx_bw, my_ets->tc_tx_bw, sizeof(ets->tc_tx_bw));
293 memcpy(ets->tc_tsa, my_ets->tc_tsa, sizeof(ets->tc_tsa));
294 memcpy(ets->prio_tc, my_ets->prio_tc, sizeof(ets->prio_tc));
295
296 return 0;
297 }
298
299 static int mlx4_en_ets_validate(struct mlx4_en_priv *priv, struct ieee_ets *ets)
300 {
301 int i;
302 int total_ets_bw = 0;
303 int has_ets_tc = 0;
304
305 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
306 if (ets->prio_tc[i] >= MLX4_EN_NUM_UP) {
307 en_err(priv, "Bad priority in UP <=> TC mapping. TC: %d, UP: %d\n",
308 i, ets->prio_tc[i]);
309 return -EINVAL;
310 }
311
312 switch (ets->tc_tsa[i]) {
313 case IEEE_8021QAZ_TSA_STRICT:
314 break;
315 case IEEE_8021QAZ_TSA_ETS:
316 has_ets_tc = 1;
317 total_ets_bw += ets->tc_tx_bw[i];
318 break;
319 default:
320 en_err(priv, "TC[%d]: Not supported TSA: %d\n",
321 i, ets->tc_tsa[i]);
322 return -ENOTSUPP;
323 }
324 }
325
326 if (has_ets_tc && total_ets_bw != MLX4_EN_BW_MAX) {
327 en_err(priv, "Bad ETS BW sum: %d. Should be exactly 100%%\n",
328 total_ets_bw);
329 return -EINVAL;
330 }
331
332 return 0;
333 }
334
335 static int mlx4_en_config_port_scheduler(struct mlx4_en_priv *priv,
336 struct ieee_ets *ets, u16 *ratelimit)
337 {
338 struct mlx4_en_dev *mdev = priv->mdev;
339 int num_strict = 0;
340 int i;
341 __u8 tc_tx_bw[IEEE_8021QAZ_MAX_TCS] = { 0 };
342 __u8 pg[IEEE_8021QAZ_MAX_TCS] = { 0 };
343
344 ets = ets ?: &priv->ets;
345 ratelimit = ratelimit ?: priv->maxrate;
346
347 /* higher TC means higher priority => lower pg */
348 for (i = IEEE_8021QAZ_MAX_TCS - 1; i >= 0; i--) {
349 switch (ets->tc_tsa[i]) {
350 case IEEE_8021QAZ_TSA_STRICT:
351 pg[i] = num_strict++;
352 tc_tx_bw[i] = MLX4_EN_BW_MAX;
353 break;
354 case IEEE_8021QAZ_TSA_ETS:
355 pg[i] = MLX4_EN_TC_ETS;
356 tc_tx_bw[i] = ets->tc_tx_bw[i] ?: MLX4_EN_BW_MIN;
357 break;
358 }
359 }
360
361 return mlx4_SET_PORT_SCHEDULER(mdev->dev, priv->port, tc_tx_bw, pg,
362 ratelimit);
363 }
364
365 static int
366 mlx4_en_dcbnl_ieee_setets(struct net_device *dev, struct ieee_ets *ets)
367 {
368 struct mlx4_en_priv *priv = netdev_priv(dev);
369 struct mlx4_en_dev *mdev = priv->mdev;
370 int err;
371
372 err = mlx4_en_ets_validate(priv, ets);
373 if (err)
374 return err;
375
376 err = mlx4_SET_PORT_PRIO2TC(mdev->dev, priv->port, ets->prio_tc);
377 if (err)
378 return err;
379
380 err = mlx4_en_config_port_scheduler(priv, ets, NULL);
381 if (err)
382 return err;
383
384 memcpy(&priv->ets, ets, sizeof(priv->ets));
385
386 return 0;
387 }
388
389 static int mlx4_en_dcbnl_ieee_getpfc(struct net_device *dev,
390 struct ieee_pfc *pfc)
391 {
392 struct mlx4_en_priv *priv = netdev_priv(dev);
393
394 pfc->pfc_cap = IEEE_8021QAZ_MAX_TCS;
395 pfc->pfc_en = priv->prof->tx_ppp;
396
397 return 0;
398 }
399
400 static int mlx4_en_dcbnl_ieee_setpfc(struct net_device *dev,
401 struct ieee_pfc *pfc)
402 {
403 struct mlx4_en_priv *priv = netdev_priv(dev);
404 struct mlx4_en_port_profile *prof = priv->prof;
405 struct mlx4_en_dev *mdev = priv->mdev;
406 int err;
407
408 en_dbg(DRV, priv, "cap: 0x%x en: 0x%x mbc: 0x%x delay: %d\n",
409 pfc->pfc_cap,
410 pfc->pfc_en,
411 pfc->mbc,
412 pfc->delay);
413
414 prof->rx_pause = !pfc->pfc_en;
415 prof->tx_pause = !pfc->pfc_en;
416 prof->rx_ppp = pfc->pfc_en;
417 prof->tx_ppp = pfc->pfc_en;
418
419 err = mlx4_SET_PORT_general(mdev->dev, priv->port,
420 priv->rx_skb_size + ETH_FCS_LEN,
421 prof->tx_pause,
422 prof->tx_ppp,
423 prof->rx_pause,
424 prof->rx_ppp);
425 if (err)
426 en_err(priv, "Failed setting pause params\n");
427 else
428 mlx4_en_update_pfc_stats_bitmap(mdev->dev, &priv->stats_bitmap,
429 prof->rx_ppp, prof->rx_pause,
430 prof->tx_ppp, prof->tx_pause);
431
432 return err;
433 }
434
435 static u8 mlx4_en_dcbnl_getdcbx(struct net_device *dev)
436 {
437 struct mlx4_en_priv *priv = netdev_priv(dev);
438
439 return priv->dcbx_cap;
440 }
441
442 static u8 mlx4_en_dcbnl_setdcbx(struct net_device *dev, u8 mode)
443 {
444 struct mlx4_en_priv *priv = netdev_priv(dev);
445 struct ieee_ets ets = {0};
446 struct ieee_pfc pfc = {0};
447
448 if (mode == priv->dcbx_cap)
449 return 0;
450
451 if ((mode & DCB_CAP_DCBX_LLD_MANAGED) ||
452 ((mode & DCB_CAP_DCBX_VER_IEEE) &&
453 (mode & DCB_CAP_DCBX_VER_CEE)) ||
454 !(mode & DCB_CAP_DCBX_HOST))
455 goto err;
456
457 priv->dcbx_cap = mode;
458
459 ets.ets_cap = IEEE_8021QAZ_MAX_TCS;
460 pfc.pfc_cap = IEEE_8021QAZ_MAX_TCS;
461
462 if (mode & DCB_CAP_DCBX_VER_IEEE) {
463 if (mlx4_en_dcbnl_ieee_setets(dev, &ets))
464 goto err;
465 if (mlx4_en_dcbnl_ieee_setpfc(dev, &pfc))
466 goto err;
467 } else if (mode & DCB_CAP_DCBX_VER_CEE) {
468 if (mlx4_en_dcbnl_set_all(dev))
469 goto err;
470 } else {
471 if (mlx4_en_dcbnl_ieee_setets(dev, &ets))
472 goto err;
473 if (mlx4_en_dcbnl_ieee_setpfc(dev, &pfc))
474 goto err;
475 if (mlx4_en_setup_tc(dev, 0))
476 goto err;
477 }
478
479 return 0;
480 err:
481 return 1;
482 }
483
484 #define MLX4_RATELIMIT_UNITS_IN_KB 100000 /* rate-limit HW unit in Kbps */
485 static int mlx4_en_dcbnl_ieee_getmaxrate(struct net_device *dev,
486 struct ieee_maxrate *maxrate)
487 {
488 struct mlx4_en_priv *priv = netdev_priv(dev);
489 int i;
490
491 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
492 maxrate->tc_maxrate[i] =
493 priv->maxrate[i] * MLX4_RATELIMIT_UNITS_IN_KB;
494
495 return 0;
496 }
497
498 static int mlx4_en_dcbnl_ieee_setmaxrate(struct net_device *dev,
499 struct ieee_maxrate *maxrate)
500 {
501 struct mlx4_en_priv *priv = netdev_priv(dev);
502 u16 tmp[IEEE_8021QAZ_MAX_TCS];
503 int i, err;
504
505 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
506 /* Convert from Kbps into HW units, rounding result up.
507 * Setting to 0, means unlimited BW.
508 */
509 tmp[i] = div_u64(maxrate->tc_maxrate[i] +
510 MLX4_RATELIMIT_UNITS_IN_KB - 1,
511 MLX4_RATELIMIT_UNITS_IN_KB);
512 }
513
514 err = mlx4_en_config_port_scheduler(priv, NULL, tmp);
515 if (err)
516 return err;
517
518 memcpy(priv->maxrate, tmp, sizeof(priv->maxrate));
519
520 return 0;
521 }
522
523 #define RPG_ENABLE_BIT 31
524 #define CN_TAG_BIT 30
525
526 static int mlx4_en_dcbnl_ieee_getqcn(struct net_device *dev,
527 struct ieee_qcn *qcn)
528 {
529 struct mlx4_en_priv *priv = netdev_priv(dev);
530 struct mlx4_congestion_control_mb_prio_802_1_qau_params *hw_qcn;
531 struct mlx4_cmd_mailbox *mailbox_out = NULL;
532 u64 mailbox_in_dma = 0;
533 u32 inmod = 0;
534 int i, err;
535
536 if (!(priv->mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_QCN))
537 return -EOPNOTSUPP;
538
539 mailbox_out = mlx4_alloc_cmd_mailbox(priv->mdev->dev);
540 if (IS_ERR(mailbox_out))
541 return -ENOMEM;
542 hw_qcn =
543 (struct mlx4_congestion_control_mb_prio_802_1_qau_params *)
544 mailbox_out->buf;
545
546 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
547 inmod = priv->port | ((1 << i) << 8) |
548 (MLX4_CTRL_ALGO_802_1_QAU_REACTION_POINT << 16);
549 err = mlx4_cmd_box(priv->mdev->dev, mailbox_in_dma,
550 mailbox_out->dma,
551 inmod, MLX4_CONGESTION_CONTROL_GET_PARAMS,
552 MLX4_CMD_CONGESTION_CTRL_OPCODE,
553 MLX4_CMD_TIME_CLASS_C,
554 MLX4_CMD_NATIVE);
555 if (err) {
556 mlx4_free_cmd_mailbox(priv->mdev->dev, mailbox_out);
557 return err;
558 }
559
560 qcn->rpg_enable[i] =
561 be32_to_cpu(hw_qcn->extended_enable) >> RPG_ENABLE_BIT;
562 qcn->rppp_max_rps[i] =
563 be32_to_cpu(hw_qcn->rppp_max_rps);
564 qcn->rpg_time_reset[i] =
565 be32_to_cpu(hw_qcn->rpg_time_reset);
566 qcn->rpg_byte_reset[i] =
567 be32_to_cpu(hw_qcn->rpg_byte_reset);
568 qcn->rpg_threshold[i] =
569 be32_to_cpu(hw_qcn->rpg_threshold);
570 qcn->rpg_max_rate[i] =
571 be32_to_cpu(hw_qcn->rpg_max_rate);
572 qcn->rpg_ai_rate[i] =
573 be32_to_cpu(hw_qcn->rpg_ai_rate);
574 qcn->rpg_hai_rate[i] =
575 be32_to_cpu(hw_qcn->rpg_hai_rate);
576 qcn->rpg_gd[i] =
577 be32_to_cpu(hw_qcn->rpg_gd);
578 qcn->rpg_min_dec_fac[i] =
579 be32_to_cpu(hw_qcn->rpg_min_dec_fac);
580 qcn->rpg_min_rate[i] =
581 be32_to_cpu(hw_qcn->rpg_min_rate);
582 qcn->cndd_state_machine[i] =
583 priv->cndd_state[i];
584 }
585 mlx4_free_cmd_mailbox(priv->mdev->dev, mailbox_out);
586 return 0;
587 }
588
589 static int mlx4_en_dcbnl_ieee_setqcn(struct net_device *dev,
590 struct ieee_qcn *qcn)
591 {
592 struct mlx4_en_priv *priv = netdev_priv(dev);
593 struct mlx4_congestion_control_mb_prio_802_1_qau_params *hw_qcn;
594 struct mlx4_cmd_mailbox *mailbox_in = NULL;
595 u64 mailbox_in_dma = 0;
596 u32 inmod = 0;
597 int i, err;
598 #define MODIFY_ENABLE_HIGH_MASK 0xc0000000
599 #define MODIFY_ENABLE_LOW_MASK 0xffc00000
600
601 if (!(priv->mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_QCN))
602 return -EOPNOTSUPP;
603
604 mailbox_in = mlx4_alloc_cmd_mailbox(priv->mdev->dev);
605 if (IS_ERR(mailbox_in))
606 return -ENOMEM;
607
608 mailbox_in_dma = mailbox_in->dma;
609 hw_qcn =
610 (struct mlx4_congestion_control_mb_prio_802_1_qau_params *)mailbox_in->buf;
611 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
612 inmod = priv->port | ((1 << i) << 8) |
613 (MLX4_CTRL_ALGO_802_1_QAU_REACTION_POINT << 16);
614
615 /* Before updating QCN parameter,
616 * need to set it's modify enable bit to 1
617 */
618
619 hw_qcn->modify_enable_high = cpu_to_be32(
620 MODIFY_ENABLE_HIGH_MASK);
621 hw_qcn->modify_enable_low = cpu_to_be32(MODIFY_ENABLE_LOW_MASK);
622
623 hw_qcn->extended_enable = cpu_to_be32(qcn->rpg_enable[i] << RPG_ENABLE_BIT);
624 hw_qcn->rppp_max_rps = cpu_to_be32(qcn->rppp_max_rps[i]);
625 hw_qcn->rpg_time_reset = cpu_to_be32(qcn->rpg_time_reset[i]);
626 hw_qcn->rpg_byte_reset = cpu_to_be32(qcn->rpg_byte_reset[i]);
627 hw_qcn->rpg_threshold = cpu_to_be32(qcn->rpg_threshold[i]);
628 hw_qcn->rpg_max_rate = cpu_to_be32(qcn->rpg_max_rate[i]);
629 hw_qcn->rpg_ai_rate = cpu_to_be32(qcn->rpg_ai_rate[i]);
630 hw_qcn->rpg_hai_rate = cpu_to_be32(qcn->rpg_hai_rate[i]);
631 hw_qcn->rpg_gd = cpu_to_be32(qcn->rpg_gd[i]);
632 hw_qcn->rpg_min_dec_fac = cpu_to_be32(qcn->rpg_min_dec_fac[i]);
633 hw_qcn->rpg_min_rate = cpu_to_be32(qcn->rpg_min_rate[i]);
634 priv->cndd_state[i] = qcn->cndd_state_machine[i];
635 if (qcn->cndd_state_machine[i] == DCB_CNDD_INTERIOR_READY)
636 hw_qcn->extended_enable |= cpu_to_be32(1 << CN_TAG_BIT);
637
638 err = mlx4_cmd(priv->mdev->dev, mailbox_in_dma, inmod,
639 MLX4_CONGESTION_CONTROL_SET_PARAMS,
640 MLX4_CMD_CONGESTION_CTRL_OPCODE,
641 MLX4_CMD_TIME_CLASS_C,
642 MLX4_CMD_NATIVE);
643 if (err) {
644 mlx4_free_cmd_mailbox(priv->mdev->dev, mailbox_in);
645 return err;
646 }
647 }
648 mlx4_free_cmd_mailbox(priv->mdev->dev, mailbox_in);
649 return 0;
650 }
651
652 static int mlx4_en_dcbnl_ieee_getqcnstats(struct net_device *dev,
653 struct ieee_qcn_stats *qcn_stats)
654 {
655 struct mlx4_en_priv *priv = netdev_priv(dev);
656 struct mlx4_congestion_control_mb_prio_802_1_qau_statistics *hw_qcn_stats;
657 struct mlx4_cmd_mailbox *mailbox_out = NULL;
658 u64 mailbox_in_dma = 0;
659 u32 inmod = 0;
660 int i, err;
661
662 if (!(priv->mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_QCN))
663 return -EOPNOTSUPP;
664
665 mailbox_out = mlx4_alloc_cmd_mailbox(priv->mdev->dev);
666 if (IS_ERR(mailbox_out))
667 return -ENOMEM;
668
669 hw_qcn_stats =
670 (struct mlx4_congestion_control_mb_prio_802_1_qau_statistics *)
671 mailbox_out->buf;
672
673 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
674 inmod = priv->port | ((1 << i) << 8) |
675 (MLX4_CTRL_ALGO_802_1_QAU_REACTION_POINT << 16);
676 err = mlx4_cmd_box(priv->mdev->dev, mailbox_in_dma,
677 mailbox_out->dma, inmod,
678 MLX4_CONGESTION_CONTROL_GET_STATISTICS,
679 MLX4_CMD_CONGESTION_CTRL_OPCODE,
680 MLX4_CMD_TIME_CLASS_C,
681 MLX4_CMD_NATIVE);
682 if (err) {
683 mlx4_free_cmd_mailbox(priv->mdev->dev, mailbox_out);
684 return err;
685 }
686 qcn_stats->rppp_rp_centiseconds[i] =
687 be64_to_cpu(hw_qcn_stats->rppp_rp_centiseconds);
688 qcn_stats->rppp_created_rps[i] =
689 be32_to_cpu(hw_qcn_stats->rppp_created_rps);
690 }
691 mlx4_free_cmd_mailbox(priv->mdev->dev, mailbox_out);
692 return 0;
693 }
694
695 const struct dcbnl_rtnl_ops mlx4_en_dcbnl_ops = {
696 .ieee_getets = mlx4_en_dcbnl_ieee_getets,
697 .ieee_setets = mlx4_en_dcbnl_ieee_setets,
698 .ieee_getmaxrate = mlx4_en_dcbnl_ieee_getmaxrate,
699 .ieee_setmaxrate = mlx4_en_dcbnl_ieee_setmaxrate,
700 .ieee_getqcn = mlx4_en_dcbnl_ieee_getqcn,
701 .ieee_setqcn = mlx4_en_dcbnl_ieee_setqcn,
702 .ieee_getqcnstats = mlx4_en_dcbnl_ieee_getqcnstats,
703 .ieee_getpfc = mlx4_en_dcbnl_ieee_getpfc,
704 .ieee_setpfc = mlx4_en_dcbnl_ieee_setpfc,
705
706 .getstate = mlx4_en_dcbnl_get_state,
707 .setstate = mlx4_en_dcbnl_set_state,
708 .getpfccfg = mlx4_en_dcbnl_get_pfc_cfg,
709 .setpfccfg = mlx4_en_dcbnl_set_pfc_cfg,
710 .setall = mlx4_en_dcbnl_set_all,
711 .getcap = mlx4_en_dcbnl_getcap,
712 .getnumtcs = mlx4_en_dcbnl_getnumtcs,
713 .getpfcstate = mlx4_en_dcbnl_getpfcstate,
714 .setpfcstate = mlx4_en_dcbnl_setpfcstate,
715 .getapp = mlx4_en_dcbnl_getapp,
716 .setapp = mlx4_en_dcbnl_setapp,
717
718 .getdcbx = mlx4_en_dcbnl_getdcbx,
719 .setdcbx = mlx4_en_dcbnl_setdcbx,
720 };
721
722 const struct dcbnl_rtnl_ops mlx4_en_dcbnl_pfc_ops = {
723 .ieee_getpfc = mlx4_en_dcbnl_ieee_getpfc,
724 .ieee_setpfc = mlx4_en_dcbnl_ieee_setpfc,
725
726 .setstate = mlx4_en_dcbnl_set_state,
727 .getpfccfg = mlx4_en_dcbnl_get_pfc_cfg,
728 .setpfccfg = mlx4_en_dcbnl_set_pfc_cfg,
729 .setall = mlx4_en_dcbnl_set_all,
730 .getnumtcs = mlx4_en_dcbnl_getnumtcs,
731 .getpfcstate = mlx4_en_dcbnl_getpfcstate,
732 .setpfcstate = mlx4_en_dcbnl_setpfcstate,
733 .getapp = mlx4_en_dcbnl_getapp,
734 .setapp = mlx4_en_dcbnl_setapp,
735
736 .getdcbx = mlx4_en_dcbnl_getdcbx,
737 .setdcbx = mlx4_en_dcbnl_setdcbx,
738 };
Linux kernel - Deliverables
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