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net/mlx5e: Use workqueue for vxlan ops
[deliverable/linux.git] / drivers / net / ethernet / mellanox / mlx5 / core / en_main.c
1 /*
2 * Copyright (c) 2015-2016, Mellanox Technologies. All rights reserved.
3 *
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 * SOFTWARE.
31 */
32
33 #include <net/tc_act/tc_gact.h>
34 #include <net/pkt_cls.h>
35 #include <linux/mlx5/fs.h>
36 #include <net/vxlan.h>
37 #include "en.h"
38 #include "en_tc.h"
39 #include "eswitch.h"
40 #include "vxlan.h"
41
42 struct mlx5e_rq_param {
43 u32 rqc[MLX5_ST_SZ_DW(rqc)];
44 struct mlx5_wq_param wq;
45 };
46
47 struct mlx5e_sq_param {
48 u32 sqc[MLX5_ST_SZ_DW(sqc)];
49 struct mlx5_wq_param wq;
50 u16 max_inline;
51 };
52
53 struct mlx5e_cq_param {
54 u32 cqc[MLX5_ST_SZ_DW(cqc)];
55 struct mlx5_wq_param wq;
56 u16 eq_ix;
57 };
58
59 struct mlx5e_channel_param {
60 struct mlx5e_rq_param rq;
61 struct mlx5e_sq_param sq;
62 struct mlx5e_cq_param rx_cq;
63 struct mlx5e_cq_param tx_cq;
64 };
65
66 static void mlx5e_update_carrier(struct mlx5e_priv *priv)
67 {
68 struct mlx5_core_dev *mdev = priv->mdev;
69 u8 port_state;
70
71 port_state = mlx5_query_vport_state(mdev,
72 MLX5_QUERY_VPORT_STATE_IN_OP_MOD_VNIC_VPORT, 0);
73
74 if (port_state == VPORT_STATE_UP)
75 netif_carrier_on(priv->netdev);
76 else
77 netif_carrier_off(priv->netdev);
78 }
79
80 static void mlx5e_update_carrier_work(struct work_struct *work)
81 {
82 struct mlx5e_priv *priv = container_of(work, struct mlx5e_priv,
83 update_carrier_work);
84
85 mutex_lock(&priv->state_lock);
86 if (test_bit(MLX5E_STATE_OPENED, &priv->state))
87 mlx5e_update_carrier(priv);
88 mutex_unlock(&priv->state_lock);
89 }
90
91 static void mlx5e_update_pport_counters(struct mlx5e_priv *priv)
92 {
93 struct mlx5_core_dev *mdev = priv->mdev;
94 struct mlx5e_pport_stats *s = &priv->stats.pport;
95 u32 *in;
96 u32 *out;
97 int sz = MLX5_ST_SZ_BYTES(ppcnt_reg);
98
99 in = mlx5_vzalloc(sz);
100 out = mlx5_vzalloc(sz);
101 if (!in || !out)
102 goto free_out;
103
104 MLX5_SET(ppcnt_reg, in, local_port, 1);
105
106 MLX5_SET(ppcnt_reg, in, grp, MLX5_IEEE_802_3_COUNTERS_GROUP);
107 mlx5_core_access_reg(mdev, in, sz, out,
108 sz, MLX5_REG_PPCNT, 0, 0);
109 memcpy(s->IEEE_802_3_counters,
110 MLX5_ADDR_OF(ppcnt_reg, out, counter_set),
111 sizeof(s->IEEE_802_3_counters));
112
113 MLX5_SET(ppcnt_reg, in, grp, MLX5_RFC_2863_COUNTERS_GROUP);
114 mlx5_core_access_reg(mdev, in, sz, out,
115 sz, MLX5_REG_PPCNT, 0, 0);
116 memcpy(s->RFC_2863_counters,
117 MLX5_ADDR_OF(ppcnt_reg, out, counter_set),
118 sizeof(s->RFC_2863_counters));
119
120 MLX5_SET(ppcnt_reg, in, grp, MLX5_RFC_2819_COUNTERS_GROUP);
121 mlx5_core_access_reg(mdev, in, sz, out,
122 sz, MLX5_REG_PPCNT, 0, 0);
123 memcpy(s->RFC_2819_counters,
124 MLX5_ADDR_OF(ppcnt_reg, out, counter_set),
125 sizeof(s->RFC_2819_counters));
126
127 free_out:
128 kvfree(in);
129 kvfree(out);
130 }
131
132 void mlx5e_update_stats(struct mlx5e_priv *priv)
133 {
134 struct mlx5_core_dev *mdev = priv->mdev;
135 struct mlx5e_vport_stats *s = &priv->stats.vport;
136 struct mlx5e_rq_stats *rq_stats;
137 struct mlx5e_sq_stats *sq_stats;
138 u32 in[MLX5_ST_SZ_DW(query_vport_counter_in)];
139 u32 *out;
140 int outlen = MLX5_ST_SZ_BYTES(query_vport_counter_out);
141 u64 tx_offload_none;
142 int i, j;
143
144 out = mlx5_vzalloc(outlen);
145 if (!out)
146 return;
147
148 /* Collect firts the SW counters and then HW for consistency */
149 s->rx_packets = 0;
150 s->rx_bytes = 0;
151 s->tx_packets = 0;
152 s->tx_bytes = 0;
153 s->tso_packets = 0;
154 s->tso_bytes = 0;
155 s->tso_inner_packets = 0;
156 s->tso_inner_bytes = 0;
157 s->tx_queue_stopped = 0;
158 s->tx_queue_wake = 0;
159 s->tx_queue_dropped = 0;
160 s->tx_csum_inner = 0;
161 tx_offload_none = 0;
162 s->lro_packets = 0;
163 s->lro_bytes = 0;
164 s->rx_csum_none = 0;
165 s->rx_csum_sw = 0;
166 s->rx_wqe_err = 0;
167 for (i = 0; i < priv->params.num_channels; i++) {
168 rq_stats = &priv->channel[i]->rq.stats;
169
170 s->rx_packets += rq_stats->packets;
171 s->rx_bytes += rq_stats->bytes;
172 s->lro_packets += rq_stats->lro_packets;
173 s->lro_bytes += rq_stats->lro_bytes;
174 s->rx_csum_none += rq_stats->csum_none;
175 s->rx_csum_sw += rq_stats->csum_sw;
176 s->rx_wqe_err += rq_stats->wqe_err;
177
178 for (j = 0; j < priv->params.num_tc; j++) {
179 sq_stats = &priv->channel[i]->sq[j].stats;
180
181 s->tx_packets += sq_stats->packets;
182 s->tx_bytes += sq_stats->bytes;
183 s->tso_packets += sq_stats->tso_packets;
184 s->tso_bytes += sq_stats->tso_bytes;
185 s->tso_inner_packets += sq_stats->tso_inner_packets;
186 s->tso_inner_bytes += sq_stats->tso_inner_bytes;
187 s->tx_queue_stopped += sq_stats->stopped;
188 s->tx_queue_wake += sq_stats->wake;
189 s->tx_queue_dropped += sq_stats->dropped;
190 s->tx_csum_inner += sq_stats->csum_offload_inner;
191 tx_offload_none += sq_stats->csum_offload_none;
192 }
193 }
194
195 /* HW counters */
196 memset(in, 0, sizeof(in));
197
198 MLX5_SET(query_vport_counter_in, in, opcode,
199 MLX5_CMD_OP_QUERY_VPORT_COUNTER);
200 MLX5_SET(query_vport_counter_in, in, op_mod, 0);
201 MLX5_SET(query_vport_counter_in, in, other_vport, 0);
202
203 memset(out, 0, outlen);
204
205 if (mlx5_cmd_exec(mdev, in, sizeof(in), out, outlen))
206 goto free_out;
207
208 #define MLX5_GET_CTR(p, x) \
209 MLX5_GET64(query_vport_counter_out, p, x)
210
211 s->rx_error_packets =
212 MLX5_GET_CTR(out, received_errors.packets);
213 s->rx_error_bytes =
214 MLX5_GET_CTR(out, received_errors.octets);
215 s->tx_error_packets =
216 MLX5_GET_CTR(out, transmit_errors.packets);
217 s->tx_error_bytes =
218 MLX5_GET_CTR(out, transmit_errors.octets);
219
220 s->rx_unicast_packets =
221 MLX5_GET_CTR(out, received_eth_unicast.packets);
222 s->rx_unicast_bytes =
223 MLX5_GET_CTR(out, received_eth_unicast.octets);
224 s->tx_unicast_packets =
225 MLX5_GET_CTR(out, transmitted_eth_unicast.packets);
226 s->tx_unicast_bytes =
227 MLX5_GET_CTR(out, transmitted_eth_unicast.octets);
228
229 s->rx_multicast_packets =
230 MLX5_GET_CTR(out, received_eth_multicast.packets);
231 s->rx_multicast_bytes =
232 MLX5_GET_CTR(out, received_eth_multicast.octets);
233 s->tx_multicast_packets =
234 MLX5_GET_CTR(out, transmitted_eth_multicast.packets);
235 s->tx_multicast_bytes =
236 MLX5_GET_CTR(out, transmitted_eth_multicast.octets);
237
238 s->rx_broadcast_packets =
239 MLX5_GET_CTR(out, received_eth_broadcast.packets);
240 s->rx_broadcast_bytes =
241 MLX5_GET_CTR(out, received_eth_broadcast.octets);
242 s->tx_broadcast_packets =
243 MLX5_GET_CTR(out, transmitted_eth_broadcast.packets);
244 s->tx_broadcast_bytes =
245 MLX5_GET_CTR(out, transmitted_eth_broadcast.octets);
246
247 /* Update calculated offload counters */
248 s->tx_csum_offload = s->tx_packets - tx_offload_none - s->tx_csum_inner;
249 s->rx_csum_good = s->rx_packets - s->rx_csum_none -
250 s->rx_csum_sw;
251
252 mlx5e_update_pport_counters(priv);
253 free_out:
254 kvfree(out);
255 }
256
257 static void mlx5e_update_stats_work(struct work_struct *work)
258 {
259 struct delayed_work *dwork = to_delayed_work(work);
260 struct mlx5e_priv *priv = container_of(dwork, struct mlx5e_priv,
261 update_stats_work);
262 mutex_lock(&priv->state_lock);
263 if (test_bit(MLX5E_STATE_OPENED, &priv->state)) {
264 mlx5e_update_stats(priv);
265 queue_delayed_work(priv->wq, dwork,
266 msecs_to_jiffies(MLX5E_UPDATE_STATS_INTERVAL));
267 }
268 mutex_unlock(&priv->state_lock);
269 }
270
271 static void mlx5e_async_event(struct mlx5_core_dev *mdev, void *vpriv,
272 enum mlx5_dev_event event, unsigned long param)
273 {
274 struct mlx5e_priv *priv = vpriv;
275
276 if (!test_bit(MLX5E_STATE_ASYNC_EVENTS_ENABLE, &priv->state))
277 return;
278
279 switch (event) {
280 case MLX5_DEV_EVENT_PORT_UP:
281 case MLX5_DEV_EVENT_PORT_DOWN:
282 queue_work(priv->wq, &priv->update_carrier_work);
283 break;
284
285 default:
286 break;
287 }
288 }
289
290 static void mlx5e_enable_async_events(struct mlx5e_priv *priv)
291 {
292 set_bit(MLX5E_STATE_ASYNC_EVENTS_ENABLE, &priv->state);
293 }
294
295 static void mlx5e_disable_async_events(struct mlx5e_priv *priv)
296 {
297 clear_bit(MLX5E_STATE_ASYNC_EVENTS_ENABLE, &priv->state);
298 synchronize_irq(mlx5_get_msix_vec(priv->mdev, MLX5_EQ_VEC_ASYNC));
299 }
300
301 #define MLX5E_HW2SW_MTU(hwmtu) (hwmtu - (ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN))
302 #define MLX5E_SW2HW_MTU(swmtu) (swmtu + (ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN))
303
304 static int mlx5e_create_rq(struct mlx5e_channel *c,
305 struct mlx5e_rq_param *param,
306 struct mlx5e_rq *rq)
307 {
308 struct mlx5e_priv *priv = c->priv;
309 struct mlx5_core_dev *mdev = priv->mdev;
310 void *rqc = param->rqc;
311 void *rqc_wq = MLX5_ADDR_OF(rqc, rqc, wq);
312 int wq_sz;
313 int err;
314 int i;
315
316 param->wq.db_numa_node = cpu_to_node(c->cpu);
317
318 err = mlx5_wq_ll_create(mdev, &param->wq, rqc_wq, &rq->wq,
319 &rq->wq_ctrl);
320 if (err)
321 return err;
322
323 rq->wq.db = &rq->wq.db[MLX5_RCV_DBR];
324
325 wq_sz = mlx5_wq_ll_get_size(&rq->wq);
326 rq->skb = kzalloc_node(wq_sz * sizeof(*rq->skb), GFP_KERNEL,
327 cpu_to_node(c->cpu));
328 if (!rq->skb) {
329 err = -ENOMEM;
330 goto err_rq_wq_destroy;
331 }
332
333 rq->wqe_sz = (priv->params.lro_en) ? priv->params.lro_wqe_sz :
334 MLX5E_SW2HW_MTU(priv->netdev->mtu);
335 rq->wqe_sz = SKB_DATA_ALIGN(rq->wqe_sz + MLX5E_NET_IP_ALIGN);
336
337 for (i = 0; i < wq_sz; i++) {
338 struct mlx5e_rx_wqe *wqe = mlx5_wq_ll_get_wqe(&rq->wq, i);
339 u32 byte_count = rq->wqe_sz - MLX5E_NET_IP_ALIGN;
340
341 wqe->data.lkey = c->mkey_be;
342 wqe->data.byte_count =
343 cpu_to_be32(byte_count | MLX5_HW_START_PADDING);
344 }
345
346 rq->pdev = c->pdev;
347 rq->netdev = c->netdev;
348 rq->tstamp = &priv->tstamp;
349 rq->channel = c;
350 rq->ix = c->ix;
351 rq->priv = c->priv;
352
353 return 0;
354
355 err_rq_wq_destroy:
356 mlx5_wq_destroy(&rq->wq_ctrl);
357
358 return err;
359 }
360
361 static void mlx5e_destroy_rq(struct mlx5e_rq *rq)
362 {
363 kfree(rq->skb);
364 mlx5_wq_destroy(&rq->wq_ctrl);
365 }
366
367 static int mlx5e_enable_rq(struct mlx5e_rq *rq, struct mlx5e_rq_param *param)
368 {
369 struct mlx5e_priv *priv = rq->priv;
370 struct mlx5_core_dev *mdev = priv->mdev;
371
372 void *in;
373 void *rqc;
374 void *wq;
375 int inlen;
376 int err;
377
378 inlen = MLX5_ST_SZ_BYTES(create_rq_in) +
379 sizeof(u64) * rq->wq_ctrl.buf.npages;
380 in = mlx5_vzalloc(inlen);
381 if (!in)
382 return -ENOMEM;
383
384 rqc = MLX5_ADDR_OF(create_rq_in, in, ctx);
385 wq = MLX5_ADDR_OF(rqc, rqc, wq);
386
387 memcpy(rqc, param->rqc, sizeof(param->rqc));
388
389 MLX5_SET(rqc, rqc, cqn, rq->cq.mcq.cqn);
390 MLX5_SET(rqc, rqc, state, MLX5_RQC_STATE_RST);
391 MLX5_SET(rqc, rqc, flush_in_error_en, 1);
392 MLX5_SET(wq, wq, log_wq_pg_sz, rq->wq_ctrl.buf.page_shift -
393 MLX5_ADAPTER_PAGE_SHIFT);
394 MLX5_SET64(wq, wq, dbr_addr, rq->wq_ctrl.db.dma);
395
396 mlx5_fill_page_array(&rq->wq_ctrl.buf,
397 (__be64 *)MLX5_ADDR_OF(wq, wq, pas));
398
399 err = mlx5_core_create_rq(mdev, in, inlen, &rq->rqn);
400
401 kvfree(in);
402
403 return err;
404 }
405
406 static int mlx5e_modify_rq(struct mlx5e_rq *rq, int curr_state, int next_state)
407 {
408 struct mlx5e_channel *c = rq->channel;
409 struct mlx5e_priv *priv = c->priv;
410 struct mlx5_core_dev *mdev = priv->mdev;
411
412 void *in;
413 void *rqc;
414 int inlen;
415 int err;
416
417 inlen = MLX5_ST_SZ_BYTES(modify_rq_in);
418 in = mlx5_vzalloc(inlen);
419 if (!in)
420 return -ENOMEM;
421
422 rqc = MLX5_ADDR_OF(modify_rq_in, in, ctx);
423
424 MLX5_SET(modify_rq_in, in, rq_state, curr_state);
425 MLX5_SET(rqc, rqc, state, next_state);
426
427 err = mlx5_core_modify_rq(mdev, rq->rqn, in, inlen);
428
429 kvfree(in);
430
431 return err;
432 }
433
434 static void mlx5e_disable_rq(struct mlx5e_rq *rq)
435 {
436 mlx5_core_destroy_rq(rq->priv->mdev, rq->rqn);
437 }
438
439 static int mlx5e_wait_for_min_rx_wqes(struct mlx5e_rq *rq)
440 {
441 unsigned long exp_time = jiffies + msecs_to_jiffies(20000);
442 struct mlx5e_channel *c = rq->channel;
443 struct mlx5e_priv *priv = c->priv;
444 struct mlx5_wq_ll *wq = &rq->wq;
445
446 while (time_before(jiffies, exp_time)) {
447 if (wq->cur_sz >= priv->params.min_rx_wqes)
448 return 0;
449
450 msleep(20);
451 }
452
453 return -ETIMEDOUT;
454 }
455
456 static int mlx5e_open_rq(struct mlx5e_channel *c,
457 struct mlx5e_rq_param *param,
458 struct mlx5e_rq *rq)
459 {
460 int err;
461
462 err = mlx5e_create_rq(c, param, rq);
463 if (err)
464 return err;
465
466 err = mlx5e_enable_rq(rq, param);
467 if (err)
468 goto err_destroy_rq;
469
470 err = mlx5e_modify_rq(rq, MLX5_RQC_STATE_RST, MLX5_RQC_STATE_RDY);
471 if (err)
472 goto err_disable_rq;
473
474 set_bit(MLX5E_RQ_STATE_POST_WQES_ENABLE, &rq->state);
475 mlx5e_send_nop(&c->sq[0], true); /* trigger mlx5e_post_rx_wqes() */
476
477 return 0;
478
479 err_disable_rq:
480 mlx5e_disable_rq(rq);
481 err_destroy_rq:
482 mlx5e_destroy_rq(rq);
483
484 return err;
485 }
486
487 static void mlx5e_close_rq(struct mlx5e_rq *rq)
488 {
489 clear_bit(MLX5E_RQ_STATE_POST_WQES_ENABLE, &rq->state);
490 napi_synchronize(&rq->channel->napi); /* prevent mlx5e_post_rx_wqes */
491
492 mlx5e_modify_rq(rq, MLX5_RQC_STATE_RDY, MLX5_RQC_STATE_ERR);
493 while (!mlx5_wq_ll_is_empty(&rq->wq))
494 msleep(20);
495
496 /* avoid destroying rq before mlx5e_poll_rx_cq() is done with it */
497 napi_synchronize(&rq->channel->napi);
498
499 mlx5e_disable_rq(rq);
500 mlx5e_destroy_rq(rq);
501 }
502
503 static void mlx5e_free_sq_db(struct mlx5e_sq *sq)
504 {
505 kfree(sq->wqe_info);
506 kfree(sq->dma_fifo);
507 kfree(sq->skb);
508 }
509
510 static int mlx5e_alloc_sq_db(struct mlx5e_sq *sq, int numa)
511 {
512 int wq_sz = mlx5_wq_cyc_get_size(&sq->wq);
513 int df_sz = wq_sz * MLX5_SEND_WQEBB_NUM_DS;
514
515 sq->skb = kzalloc_node(wq_sz * sizeof(*sq->skb), GFP_KERNEL, numa);
516 sq->dma_fifo = kzalloc_node(df_sz * sizeof(*sq->dma_fifo), GFP_KERNEL,
517 numa);
518 sq->wqe_info = kzalloc_node(wq_sz * sizeof(*sq->wqe_info), GFP_KERNEL,
519 numa);
520
521 if (!sq->skb || !sq->dma_fifo || !sq->wqe_info) {
522 mlx5e_free_sq_db(sq);
523 return -ENOMEM;
524 }
525
526 sq->dma_fifo_mask = df_sz - 1;
527
528 return 0;
529 }
530
531 static int mlx5e_create_sq(struct mlx5e_channel *c,
532 int tc,
533 struct mlx5e_sq_param *param,
534 struct mlx5e_sq *sq)
535 {
536 struct mlx5e_priv *priv = c->priv;
537 struct mlx5_core_dev *mdev = priv->mdev;
538
539 void *sqc = param->sqc;
540 void *sqc_wq = MLX5_ADDR_OF(sqc, sqc, wq);
541 int txq_ix;
542 int err;
543
544 err = mlx5_alloc_map_uar(mdev, &sq->uar, true);
545 if (err)
546 return err;
547
548 param->wq.db_numa_node = cpu_to_node(c->cpu);
549
550 err = mlx5_wq_cyc_create(mdev, &param->wq, sqc_wq, &sq->wq,
551 &sq->wq_ctrl);
552 if (err)
553 goto err_unmap_free_uar;
554
555 sq->wq.db = &sq->wq.db[MLX5_SND_DBR];
556 if (sq->uar.bf_map) {
557 set_bit(MLX5E_SQ_STATE_BF_ENABLE, &sq->state);
558 sq->uar_map = sq->uar.bf_map;
559 } else {
560 sq->uar_map = sq->uar.map;
561 }
562 sq->bf_buf_size = (1 << MLX5_CAP_GEN(mdev, log_bf_reg_size)) / 2;
563 sq->max_inline = param->max_inline;
564
565 err = mlx5e_alloc_sq_db(sq, cpu_to_node(c->cpu));
566 if (err)
567 goto err_sq_wq_destroy;
568
569 txq_ix = c->ix + tc * priv->params.num_channels;
570 sq->txq = netdev_get_tx_queue(priv->netdev, txq_ix);
571
572 sq->pdev = c->pdev;
573 sq->tstamp = &priv->tstamp;
574 sq->mkey_be = c->mkey_be;
575 sq->channel = c;
576 sq->tc = tc;
577 sq->edge = (sq->wq.sz_m1 + 1) - MLX5_SEND_WQE_MAX_WQEBBS;
578 sq->bf_budget = MLX5E_SQ_BF_BUDGET;
579 priv->txq_to_sq_map[txq_ix] = sq;
580
581 return 0;
582
583 err_sq_wq_destroy:
584 mlx5_wq_destroy(&sq->wq_ctrl);
585
586 err_unmap_free_uar:
587 mlx5_unmap_free_uar(mdev, &sq->uar);
588
589 return err;
590 }
591
592 static void mlx5e_destroy_sq(struct mlx5e_sq *sq)
593 {
594 struct mlx5e_channel *c = sq->channel;
595 struct mlx5e_priv *priv = c->priv;
596
597 mlx5e_free_sq_db(sq);
598 mlx5_wq_destroy(&sq->wq_ctrl);
599 mlx5_unmap_free_uar(priv->mdev, &sq->uar);
600 }
601
602 static int mlx5e_enable_sq(struct mlx5e_sq *sq, struct mlx5e_sq_param *param)
603 {
604 struct mlx5e_channel *c = sq->channel;
605 struct mlx5e_priv *priv = c->priv;
606 struct mlx5_core_dev *mdev = priv->mdev;
607
608 void *in;
609 void *sqc;
610 void *wq;
611 int inlen;
612 int err;
613
614 inlen = MLX5_ST_SZ_BYTES(create_sq_in) +
615 sizeof(u64) * sq->wq_ctrl.buf.npages;
616 in = mlx5_vzalloc(inlen);
617 if (!in)
618 return -ENOMEM;
619
620 sqc = MLX5_ADDR_OF(create_sq_in, in, ctx);
621 wq = MLX5_ADDR_OF(sqc, sqc, wq);
622
623 memcpy(sqc, param->sqc, sizeof(param->sqc));
624
625 MLX5_SET(sqc, sqc, tis_num_0, priv->tisn[sq->tc]);
626 MLX5_SET(sqc, sqc, cqn, c->sq[sq->tc].cq.mcq.cqn);
627 MLX5_SET(sqc, sqc, state, MLX5_SQC_STATE_RST);
628 MLX5_SET(sqc, sqc, tis_lst_sz, 1);
629 MLX5_SET(sqc, sqc, flush_in_error_en, 1);
630
631 MLX5_SET(wq, wq, wq_type, MLX5_WQ_TYPE_CYCLIC);
632 MLX5_SET(wq, wq, uar_page, sq->uar.index);
633 MLX5_SET(wq, wq, log_wq_pg_sz, sq->wq_ctrl.buf.page_shift -
634 MLX5_ADAPTER_PAGE_SHIFT);
635 MLX5_SET64(wq, wq, dbr_addr, sq->wq_ctrl.db.dma);
636
637 mlx5_fill_page_array(&sq->wq_ctrl.buf,
638 (__be64 *)MLX5_ADDR_OF(wq, wq, pas));
639
640 err = mlx5_core_create_sq(mdev, in, inlen, &sq->sqn);
641
642 kvfree(in);
643
644 return err;
645 }
646
647 static int mlx5e_modify_sq(struct mlx5e_sq *sq, int curr_state, int next_state)
648 {
649 struct mlx5e_channel *c = sq->channel;
650 struct mlx5e_priv *priv = c->priv;
651 struct mlx5_core_dev *mdev = priv->mdev;
652
653 void *in;
654 void *sqc;
655 int inlen;
656 int err;
657
658 inlen = MLX5_ST_SZ_BYTES(modify_sq_in);
659 in = mlx5_vzalloc(inlen);
660 if (!in)
661 return -ENOMEM;
662
663 sqc = MLX5_ADDR_OF(modify_sq_in, in, ctx);
664
665 MLX5_SET(modify_sq_in, in, sq_state, curr_state);
666 MLX5_SET(sqc, sqc, state, next_state);
667
668 err = mlx5_core_modify_sq(mdev, sq->sqn, in, inlen);
669
670 kvfree(in);
671
672 return err;
673 }
674
675 static void mlx5e_disable_sq(struct mlx5e_sq *sq)
676 {
677 struct mlx5e_channel *c = sq->channel;
678 struct mlx5e_priv *priv = c->priv;
679 struct mlx5_core_dev *mdev = priv->mdev;
680
681 mlx5_core_destroy_sq(mdev, sq->sqn);
682 }
683
684 static int mlx5e_open_sq(struct mlx5e_channel *c,
685 int tc,
686 struct mlx5e_sq_param *param,
687 struct mlx5e_sq *sq)
688 {
689 int err;
690
691 err = mlx5e_create_sq(c, tc, param, sq);
692 if (err)
693 return err;
694
695 err = mlx5e_enable_sq(sq, param);
696 if (err)
697 goto err_destroy_sq;
698
699 err = mlx5e_modify_sq(sq, MLX5_SQC_STATE_RST, MLX5_SQC_STATE_RDY);
700 if (err)
701 goto err_disable_sq;
702
703 set_bit(MLX5E_SQ_STATE_WAKE_TXQ_ENABLE, &sq->state);
704 netdev_tx_reset_queue(sq->txq);
705 netif_tx_start_queue(sq->txq);
706
707 return 0;
708
709 err_disable_sq:
710 mlx5e_disable_sq(sq);
711 err_destroy_sq:
712 mlx5e_destroy_sq(sq);
713
714 return err;
715 }
716
717 static inline void netif_tx_disable_queue(struct netdev_queue *txq)
718 {
719 __netif_tx_lock_bh(txq);
720 netif_tx_stop_queue(txq);
721 __netif_tx_unlock_bh(txq);
722 }
723
724 static void mlx5e_close_sq(struct mlx5e_sq *sq)
725 {
726 clear_bit(MLX5E_SQ_STATE_WAKE_TXQ_ENABLE, &sq->state);
727 napi_synchronize(&sq->channel->napi); /* prevent netif_tx_wake_queue */
728 netif_tx_disable_queue(sq->txq);
729
730 /* ensure hw is notified of all pending wqes */
731 if (mlx5e_sq_has_room_for(sq, 1))
732 mlx5e_send_nop(sq, true);
733
734 mlx5e_modify_sq(sq, MLX5_SQC_STATE_RDY, MLX5_SQC_STATE_ERR);
735 while (sq->cc != sq->pc) /* wait till sq is empty */
736 msleep(20);
737
738 /* avoid destroying sq before mlx5e_poll_tx_cq() is done with it */
739 napi_synchronize(&sq->channel->napi);
740
741 mlx5e_disable_sq(sq);
742 mlx5e_destroy_sq(sq);
743 }
744
745 static int mlx5e_create_cq(struct mlx5e_channel *c,
746 struct mlx5e_cq_param *param,
747 struct mlx5e_cq *cq)
748 {
749 struct mlx5e_priv *priv = c->priv;
750 struct mlx5_core_dev *mdev = priv->mdev;
751 struct mlx5_core_cq *mcq = &cq->mcq;
752 int eqn_not_used;
753 unsigned int irqn;
754 int err;
755 u32 i;
756
757 param->wq.buf_numa_node = cpu_to_node(c->cpu);
758 param->wq.db_numa_node = cpu_to_node(c->cpu);
759 param->eq_ix = c->ix;
760
761 err = mlx5_cqwq_create(mdev, &param->wq, param->cqc, &cq->wq,
762 &cq->wq_ctrl);
763 if (err)
764 return err;
765
766 mlx5_vector2eqn(mdev, param->eq_ix, &eqn_not_used, &irqn);
767
768 cq->napi = &c->napi;
769
770 mcq->cqe_sz = 64;
771 mcq->set_ci_db = cq->wq_ctrl.db.db;
772 mcq->arm_db = cq->wq_ctrl.db.db + 1;
773 *mcq->set_ci_db = 0;
774 *mcq->arm_db = 0;
775 mcq->vector = param->eq_ix;
776 mcq->comp = mlx5e_completion_event;
777 mcq->event = mlx5e_cq_error_event;
778 mcq->irqn = irqn;
779 mcq->uar = &priv->cq_uar;
780
781 for (i = 0; i < mlx5_cqwq_get_size(&cq->wq); i++) {
782 struct mlx5_cqe64 *cqe = mlx5_cqwq_get_wqe(&cq->wq, i);
783
784 cqe->op_own = 0xf1;
785 }
786
787 cq->channel = c;
788 cq->priv = priv;
789
790 return 0;
791 }
792
793 static void mlx5e_destroy_cq(struct mlx5e_cq *cq)
794 {
795 mlx5_wq_destroy(&cq->wq_ctrl);
796 }
797
798 static int mlx5e_enable_cq(struct mlx5e_cq *cq, struct mlx5e_cq_param *param)
799 {
800 struct mlx5e_priv *priv = cq->priv;
801 struct mlx5_core_dev *mdev = priv->mdev;
802 struct mlx5_core_cq *mcq = &cq->mcq;
803
804 void *in;
805 void *cqc;
806 int inlen;
807 unsigned int irqn_not_used;
808 int eqn;
809 int err;
810
811 inlen = MLX5_ST_SZ_BYTES(create_cq_in) +
812 sizeof(u64) * cq->wq_ctrl.buf.npages;
813 in = mlx5_vzalloc(inlen);
814 if (!in)
815 return -ENOMEM;
816
817 cqc = MLX5_ADDR_OF(create_cq_in, in, cq_context);
818
819 memcpy(cqc, param->cqc, sizeof(param->cqc));
820
821 mlx5_fill_page_array(&cq->wq_ctrl.buf,
822 (__be64 *)MLX5_ADDR_OF(create_cq_in, in, pas));
823
824 mlx5_vector2eqn(mdev, param->eq_ix, &eqn, &irqn_not_used);
825
826 MLX5_SET(cqc, cqc, c_eqn, eqn);
827 MLX5_SET(cqc, cqc, uar_page, mcq->uar->index);
828 MLX5_SET(cqc, cqc, log_page_size, cq->wq_ctrl.buf.page_shift -
829 MLX5_ADAPTER_PAGE_SHIFT);
830 MLX5_SET64(cqc, cqc, dbr_addr, cq->wq_ctrl.db.dma);
831
832 err = mlx5_core_create_cq(mdev, mcq, in, inlen);
833
834 kvfree(in);
835
836 if (err)
837 return err;
838
839 mlx5e_cq_arm(cq);
840
841 return 0;
842 }
843
844 static void mlx5e_disable_cq(struct mlx5e_cq *cq)
845 {
846 struct mlx5e_priv *priv = cq->priv;
847 struct mlx5_core_dev *mdev = priv->mdev;
848
849 mlx5_core_destroy_cq(mdev, &cq->mcq);
850 }
851
852 static int mlx5e_open_cq(struct mlx5e_channel *c,
853 struct mlx5e_cq_param *param,
854 struct mlx5e_cq *cq,
855 u16 moderation_usecs,
856 u16 moderation_frames)
857 {
858 int err;
859 struct mlx5e_priv *priv = c->priv;
860 struct mlx5_core_dev *mdev = priv->mdev;
861
862 err = mlx5e_create_cq(c, param, cq);
863 if (err)
864 return err;
865
866 err = mlx5e_enable_cq(cq, param);
867 if (err)
868 goto err_destroy_cq;
869
870 if (MLX5_CAP_GEN(mdev, cq_moderation))
871 mlx5_core_modify_cq_moderation(mdev, &cq->mcq,
872 moderation_usecs,
873 moderation_frames);
874 return 0;
875
876 err_destroy_cq:
877 mlx5e_destroy_cq(cq);
878
879 return err;
880 }
881
882 static void mlx5e_close_cq(struct mlx5e_cq *cq)
883 {
884 mlx5e_disable_cq(cq);
885 mlx5e_destroy_cq(cq);
886 }
887
888 static int mlx5e_get_cpu(struct mlx5e_priv *priv, int ix)
889 {
890 return cpumask_first(priv->mdev->priv.irq_info[ix].mask);
891 }
892
893 static int mlx5e_open_tx_cqs(struct mlx5e_channel *c,
894 struct mlx5e_channel_param *cparam)
895 {
896 struct mlx5e_priv *priv = c->priv;
897 int err;
898 int tc;
899
900 for (tc = 0; tc < c->num_tc; tc++) {
901 err = mlx5e_open_cq(c, &cparam->tx_cq, &c->sq[tc].cq,
902 priv->params.tx_cq_moderation_usec,
903 priv->params.tx_cq_moderation_pkts);
904 if (err)
905 goto err_close_tx_cqs;
906 }
907
908 return 0;
909
910 err_close_tx_cqs:
911 for (tc--; tc >= 0; tc--)
912 mlx5e_close_cq(&c->sq[tc].cq);
913
914 return err;
915 }
916
917 static void mlx5e_close_tx_cqs(struct mlx5e_channel *c)
918 {
919 int tc;
920
921 for (tc = 0; tc < c->num_tc; tc++)
922 mlx5e_close_cq(&c->sq[tc].cq);
923 }
924
925 static int mlx5e_open_sqs(struct mlx5e_channel *c,
926 struct mlx5e_channel_param *cparam)
927 {
928 int err;
929 int tc;
930
931 for (tc = 0; tc < c->num_tc; tc++) {
932 err = mlx5e_open_sq(c, tc, &cparam->sq, &c->sq[tc]);
933 if (err)
934 goto err_close_sqs;
935 }
936
937 return 0;
938
939 err_close_sqs:
940 for (tc--; tc >= 0; tc--)
941 mlx5e_close_sq(&c->sq[tc]);
942
943 return err;
944 }
945
946 static void mlx5e_close_sqs(struct mlx5e_channel *c)
947 {
948 int tc;
949
950 for (tc = 0; tc < c->num_tc; tc++)
951 mlx5e_close_sq(&c->sq[tc]);
952 }
953
954 static void mlx5e_build_channeltc_to_txq_map(struct mlx5e_priv *priv, int ix)
955 {
956 int i;
957
958 for (i = 0; i < MLX5E_MAX_NUM_TC; i++)
959 priv->channeltc_to_txq_map[ix][i] =
960 ix + i * priv->params.num_channels;
961 }
962
963 static int mlx5e_open_channel(struct mlx5e_priv *priv, int ix,
964 struct mlx5e_channel_param *cparam,
965 struct mlx5e_channel **cp)
966 {
967 struct net_device *netdev = priv->netdev;
968 int cpu = mlx5e_get_cpu(priv, ix);
969 struct mlx5e_channel *c;
970 int err;
971
972 c = kzalloc_node(sizeof(*c), GFP_KERNEL, cpu_to_node(cpu));
973 if (!c)
974 return -ENOMEM;
975
976 c->priv = priv;
977 c->ix = ix;
978 c->cpu = cpu;
979 c->pdev = &priv->mdev->pdev->dev;
980 c->netdev = priv->netdev;
981 c->mkey_be = cpu_to_be32(priv->mkey.key);
982 c->num_tc = priv->params.num_tc;
983
984 mlx5e_build_channeltc_to_txq_map(priv, ix);
985
986 netif_napi_add(netdev, &c->napi, mlx5e_napi_poll, 64);
987
988 err = mlx5e_open_tx_cqs(c, cparam);
989 if (err)
990 goto err_napi_del;
991
992 err = mlx5e_open_cq(c, &cparam->rx_cq, &c->rq.cq,
993 priv->params.rx_cq_moderation_usec,
994 priv->params.rx_cq_moderation_pkts);
995 if (err)
996 goto err_close_tx_cqs;
997
998 napi_enable(&c->napi);
999
1000 err = mlx5e_open_sqs(c, cparam);
1001 if (err)
1002 goto err_disable_napi;
1003
1004 err = mlx5e_open_rq(c, &cparam->rq, &c->rq);
1005 if (err)
1006 goto err_close_sqs;
1007
1008 netif_set_xps_queue(netdev, get_cpu_mask(c->cpu), ix);
1009 *cp = c;
1010
1011 return 0;
1012
1013 err_close_sqs:
1014 mlx5e_close_sqs(c);
1015
1016 err_disable_napi:
1017 napi_disable(&c->napi);
1018 mlx5e_close_cq(&c->rq.cq);
1019
1020 err_close_tx_cqs:
1021 mlx5e_close_tx_cqs(c);
1022
1023 err_napi_del:
1024 netif_napi_del(&c->napi);
1025 napi_hash_del(&c->napi);
1026 kfree(c);
1027
1028 return err;
1029 }
1030
1031 static void mlx5e_close_channel(struct mlx5e_channel *c)
1032 {
1033 mlx5e_close_rq(&c->rq);
1034 mlx5e_close_sqs(c);
1035 napi_disable(&c->napi);
1036 mlx5e_close_cq(&c->rq.cq);
1037 mlx5e_close_tx_cqs(c);
1038 netif_napi_del(&c->napi);
1039
1040 napi_hash_del(&c->napi);
1041 synchronize_rcu();
1042
1043 kfree(c);
1044 }
1045
1046 static void mlx5e_build_rq_param(struct mlx5e_priv *priv,
1047 struct mlx5e_rq_param *param)
1048 {
1049 void *rqc = param->rqc;
1050 void *wq = MLX5_ADDR_OF(rqc, rqc, wq);
1051
1052 MLX5_SET(wq, wq, wq_type, MLX5_WQ_TYPE_LINKED_LIST);
1053 MLX5_SET(wq, wq, end_padding_mode, MLX5_WQ_END_PAD_MODE_ALIGN);
1054 MLX5_SET(wq, wq, log_wq_stride, ilog2(sizeof(struct mlx5e_rx_wqe)));
1055 MLX5_SET(wq, wq, log_wq_sz, priv->params.log_rq_size);
1056 MLX5_SET(wq, wq, pd, priv->pdn);
1057
1058 param->wq.buf_numa_node = dev_to_node(&priv->mdev->pdev->dev);
1059 param->wq.linear = 1;
1060 }
1061
1062 static void mlx5e_build_drop_rq_param(struct mlx5e_rq_param *param)
1063 {
1064 void *rqc = param->rqc;
1065 void *wq = MLX5_ADDR_OF(rqc, rqc, wq);
1066
1067 MLX5_SET(wq, wq, wq_type, MLX5_WQ_TYPE_LINKED_LIST);
1068 MLX5_SET(wq, wq, log_wq_stride, ilog2(sizeof(struct mlx5e_rx_wqe)));
1069 }
1070
1071 static void mlx5e_build_sq_param(struct mlx5e_priv *priv,
1072 struct mlx5e_sq_param *param)
1073 {
1074 void *sqc = param->sqc;
1075 void *wq = MLX5_ADDR_OF(sqc, sqc, wq);
1076
1077 MLX5_SET(wq, wq, log_wq_sz, priv->params.log_sq_size);
1078 MLX5_SET(wq, wq, log_wq_stride, ilog2(MLX5_SEND_WQE_BB));
1079 MLX5_SET(wq, wq, pd, priv->pdn);
1080
1081 param->wq.buf_numa_node = dev_to_node(&priv->mdev->pdev->dev);
1082 param->max_inline = priv->params.tx_max_inline;
1083 }
1084
1085 static void mlx5e_build_common_cq_param(struct mlx5e_priv *priv,
1086 struct mlx5e_cq_param *param)
1087 {
1088 void *cqc = param->cqc;
1089
1090 MLX5_SET(cqc, cqc, uar_page, priv->cq_uar.index);
1091 }
1092
1093 static void mlx5e_build_rx_cq_param(struct mlx5e_priv *priv,
1094 struct mlx5e_cq_param *param)
1095 {
1096 void *cqc = param->cqc;
1097
1098 MLX5_SET(cqc, cqc, log_cq_size, priv->params.log_rq_size);
1099
1100 mlx5e_build_common_cq_param(priv, param);
1101 }
1102
1103 static void mlx5e_build_tx_cq_param(struct mlx5e_priv *priv,
1104 struct mlx5e_cq_param *param)
1105 {
1106 void *cqc = param->cqc;
1107
1108 MLX5_SET(cqc, cqc, log_cq_size, priv->params.log_sq_size);
1109
1110 mlx5e_build_common_cq_param(priv, param);
1111 }
1112
1113 static void mlx5e_build_channel_param(struct mlx5e_priv *priv,
1114 struct mlx5e_channel_param *cparam)
1115 {
1116 memset(cparam, 0, sizeof(*cparam));
1117
1118 mlx5e_build_rq_param(priv, &cparam->rq);
1119 mlx5e_build_sq_param(priv, &cparam->sq);
1120 mlx5e_build_rx_cq_param(priv, &cparam->rx_cq);
1121 mlx5e_build_tx_cq_param(priv, &cparam->tx_cq);
1122 }
1123
1124 static int mlx5e_open_channels(struct mlx5e_priv *priv)
1125 {
1126 struct mlx5e_channel_param cparam;
1127 int nch = priv->params.num_channels;
1128 int err = -ENOMEM;
1129 int i;
1130 int j;
1131
1132 priv->channel = kcalloc(nch, sizeof(struct mlx5e_channel *),
1133 GFP_KERNEL);
1134
1135 priv->txq_to_sq_map = kcalloc(nch * priv->params.num_tc,
1136 sizeof(struct mlx5e_sq *), GFP_KERNEL);
1137
1138 if (!priv->channel || !priv->txq_to_sq_map)
1139 goto err_free_txq_to_sq_map;
1140
1141 mlx5e_build_channel_param(priv, &cparam);
1142 for (i = 0; i < nch; i++) {
1143 err = mlx5e_open_channel(priv, i, &cparam, &priv->channel[i]);
1144 if (err)
1145 goto err_close_channels;
1146 }
1147
1148 for (j = 0; j < nch; j++) {
1149 err = mlx5e_wait_for_min_rx_wqes(&priv->channel[j]->rq);
1150 if (err)
1151 goto err_close_channels;
1152 }
1153
1154 return 0;
1155
1156 err_close_channels:
1157 for (i--; i >= 0; i--)
1158 mlx5e_close_channel(priv->channel[i]);
1159
1160 err_free_txq_to_sq_map:
1161 kfree(priv->txq_to_sq_map);
1162 kfree(priv->channel);
1163
1164 return err;
1165 }
1166
1167 static void mlx5e_close_channels(struct mlx5e_priv *priv)
1168 {
1169 int i;
1170
1171 for (i = 0; i < priv->params.num_channels; i++)
1172 mlx5e_close_channel(priv->channel[i]);
1173
1174 kfree(priv->txq_to_sq_map);
1175 kfree(priv->channel);
1176 }
1177
1178 static int mlx5e_rx_hash_fn(int hfunc)
1179 {
1180 return (hfunc == ETH_RSS_HASH_TOP) ?
1181 MLX5_RX_HASH_FN_TOEPLITZ :
1182 MLX5_RX_HASH_FN_INVERTED_XOR8;
1183 }
1184
1185 static int mlx5e_bits_invert(unsigned long a, int size)
1186 {
1187 int inv = 0;
1188 int i;
1189
1190 for (i = 0; i < size; i++)
1191 inv |= (test_bit(size - i - 1, &a) ? 1 : 0) << i;
1192
1193 return inv;
1194 }
1195
1196 static void mlx5e_fill_indir_rqt_rqns(struct mlx5e_priv *priv, void *rqtc)
1197 {
1198 int i;
1199
1200 for (i = 0; i < MLX5E_INDIR_RQT_SIZE; i++) {
1201 int ix = i;
1202
1203 if (priv->params.rss_hfunc == ETH_RSS_HASH_XOR)
1204 ix = mlx5e_bits_invert(i, MLX5E_LOG_INDIR_RQT_SIZE);
1205
1206 ix = priv->params.indirection_rqt[ix];
1207 MLX5_SET(rqtc, rqtc, rq_num[i],
1208 test_bit(MLX5E_STATE_OPENED, &priv->state) ?
1209 priv->channel[ix]->rq.rqn :
1210 priv->drop_rq.rqn);
1211 }
1212 }
1213
1214 static void mlx5e_fill_rqt_rqns(struct mlx5e_priv *priv, void *rqtc,
1215 enum mlx5e_rqt_ix rqt_ix)
1216 {
1217
1218 switch (rqt_ix) {
1219 case MLX5E_INDIRECTION_RQT:
1220 mlx5e_fill_indir_rqt_rqns(priv, rqtc);
1221
1222 break;
1223
1224 default: /* MLX5E_SINGLE_RQ_RQT */
1225 MLX5_SET(rqtc, rqtc, rq_num[0],
1226 test_bit(MLX5E_STATE_OPENED, &priv->state) ?
1227 priv->channel[0]->rq.rqn :
1228 priv->drop_rq.rqn);
1229
1230 break;
1231 }
1232 }
1233
1234 static int mlx5e_create_rqt(struct mlx5e_priv *priv, enum mlx5e_rqt_ix rqt_ix)
1235 {
1236 struct mlx5_core_dev *mdev = priv->mdev;
1237 u32 *in;
1238 void *rqtc;
1239 int inlen;
1240 int sz;
1241 int err;
1242
1243 sz = (rqt_ix == MLX5E_SINGLE_RQ_RQT) ? 1 : MLX5E_INDIR_RQT_SIZE;
1244
1245 inlen = MLX5_ST_SZ_BYTES(create_rqt_in) + sizeof(u32) * sz;
1246 in = mlx5_vzalloc(inlen);
1247 if (!in)
1248 return -ENOMEM;
1249
1250 rqtc = MLX5_ADDR_OF(create_rqt_in, in, rqt_context);
1251
1252 MLX5_SET(rqtc, rqtc, rqt_actual_size, sz);
1253 MLX5_SET(rqtc, rqtc, rqt_max_size, sz);
1254
1255 mlx5e_fill_rqt_rqns(priv, rqtc, rqt_ix);
1256
1257 err = mlx5_core_create_rqt(mdev, in, inlen, &priv->rqtn[rqt_ix]);
1258
1259 kvfree(in);
1260
1261 return err;
1262 }
1263
1264 int mlx5e_redirect_rqt(struct mlx5e_priv *priv, enum mlx5e_rqt_ix rqt_ix)
1265 {
1266 struct mlx5_core_dev *mdev = priv->mdev;
1267 u32 *in;
1268 void *rqtc;
1269 int inlen;
1270 int sz;
1271 int err;
1272
1273 sz = (rqt_ix == MLX5E_SINGLE_RQ_RQT) ? 1 : MLX5E_INDIR_RQT_SIZE;
1274
1275 inlen = MLX5_ST_SZ_BYTES(modify_rqt_in) + sizeof(u32) * sz;
1276 in = mlx5_vzalloc(inlen);
1277 if (!in)
1278 return -ENOMEM;
1279
1280 rqtc = MLX5_ADDR_OF(modify_rqt_in, in, ctx);
1281
1282 MLX5_SET(rqtc, rqtc, rqt_actual_size, sz);
1283
1284 mlx5e_fill_rqt_rqns(priv, rqtc, rqt_ix);
1285
1286 MLX5_SET(modify_rqt_in, in, bitmask.rqn_list, 1);
1287
1288 err = mlx5_core_modify_rqt(mdev, priv->rqtn[rqt_ix], in, inlen);
1289
1290 kvfree(in);
1291
1292 return err;
1293 }
1294
1295 static void mlx5e_destroy_rqt(struct mlx5e_priv *priv, enum mlx5e_rqt_ix rqt_ix)
1296 {
1297 mlx5_core_destroy_rqt(priv->mdev, priv->rqtn[rqt_ix]);
1298 }
1299
1300 static void mlx5e_redirect_rqts(struct mlx5e_priv *priv)
1301 {
1302 mlx5e_redirect_rqt(priv, MLX5E_INDIRECTION_RQT);
1303 mlx5e_redirect_rqt(priv, MLX5E_SINGLE_RQ_RQT);
1304 }
1305
1306 static void mlx5e_build_tir_ctx_lro(void *tirc, struct mlx5e_priv *priv)
1307 {
1308 if (!priv->params.lro_en)
1309 return;
1310
1311 #define ROUGH_MAX_L2_L3_HDR_SZ 256
1312
1313 MLX5_SET(tirc, tirc, lro_enable_mask,
1314 MLX5_TIRC_LRO_ENABLE_MASK_IPV4_LRO |
1315 MLX5_TIRC_LRO_ENABLE_MASK_IPV6_LRO);
1316 MLX5_SET(tirc, tirc, lro_max_ip_payload_size,
1317 (priv->params.lro_wqe_sz -
1318 ROUGH_MAX_L2_L3_HDR_SZ) >> 8);
1319 MLX5_SET(tirc, tirc, lro_timeout_period_usecs,
1320 MLX5_CAP_ETH(priv->mdev,
1321 lro_timer_supported_periods[2]));
1322 }
1323
1324 void mlx5e_build_tir_ctx_hash(void *tirc, struct mlx5e_priv *priv)
1325 {
1326 MLX5_SET(tirc, tirc, rx_hash_fn,
1327 mlx5e_rx_hash_fn(priv->params.rss_hfunc));
1328 if (priv->params.rss_hfunc == ETH_RSS_HASH_TOP) {
1329 void *rss_key = MLX5_ADDR_OF(tirc, tirc,
1330 rx_hash_toeplitz_key);
1331 size_t len = MLX5_FLD_SZ_BYTES(tirc,
1332 rx_hash_toeplitz_key);
1333
1334 MLX5_SET(tirc, tirc, rx_hash_symmetric, 1);
1335 memcpy(rss_key, priv->params.toeplitz_hash_key, len);
1336 }
1337 }
1338
1339 static int mlx5e_modify_tirs_lro(struct mlx5e_priv *priv)
1340 {
1341 struct mlx5_core_dev *mdev = priv->mdev;
1342
1343 void *in;
1344 void *tirc;
1345 int inlen;
1346 int err;
1347 int tt;
1348
1349 inlen = MLX5_ST_SZ_BYTES(modify_tir_in);
1350 in = mlx5_vzalloc(inlen);
1351 if (!in)
1352 return -ENOMEM;
1353
1354 MLX5_SET(modify_tir_in, in, bitmask.lro, 1);
1355 tirc = MLX5_ADDR_OF(modify_tir_in, in, ctx);
1356
1357 mlx5e_build_tir_ctx_lro(tirc, priv);
1358
1359 for (tt = 0; tt < MLX5E_NUM_TT; tt++) {
1360 err = mlx5_core_modify_tir(mdev, priv->tirn[tt], in, inlen);
1361 if (err)
1362 break;
1363 }
1364
1365 kvfree(in);
1366
1367 return err;
1368 }
1369
1370 static int mlx5e_refresh_tir_self_loopback_enable(struct mlx5_core_dev *mdev,
1371 u32 tirn)
1372 {
1373 void *in;
1374 int inlen;
1375 int err;
1376
1377 inlen = MLX5_ST_SZ_BYTES(modify_tir_in);
1378 in = mlx5_vzalloc(inlen);
1379 if (!in)
1380 return -ENOMEM;
1381
1382 MLX5_SET(modify_tir_in, in, bitmask.self_lb_en, 1);
1383
1384 err = mlx5_core_modify_tir(mdev, tirn, in, inlen);
1385
1386 kvfree(in);
1387
1388 return err;
1389 }
1390
1391 static int mlx5e_refresh_tirs_self_loopback_enable(struct mlx5e_priv *priv)
1392 {
1393 int err;
1394 int i;
1395
1396 for (i = 0; i < MLX5E_NUM_TT; i++) {
1397 err = mlx5e_refresh_tir_self_loopback_enable(priv->mdev,
1398 priv->tirn[i]);
1399 if (err)
1400 return err;
1401 }
1402
1403 return 0;
1404 }
1405
1406 static int mlx5e_set_mtu(struct mlx5e_priv *priv, u16 mtu)
1407 {
1408 struct mlx5_core_dev *mdev = priv->mdev;
1409 u16 hw_mtu = MLX5E_SW2HW_MTU(mtu);
1410 int err;
1411
1412 err = mlx5_set_port_mtu(mdev, hw_mtu, 1);
1413 if (err)
1414 return err;
1415
1416 /* Update vport context MTU */
1417 mlx5_modify_nic_vport_mtu(mdev, hw_mtu);
1418 return 0;
1419 }
1420
1421 static void mlx5e_query_mtu(struct mlx5e_priv *priv, u16 *mtu)
1422 {
1423 struct mlx5_core_dev *mdev = priv->mdev;
1424 u16 hw_mtu = 0;
1425 int err;
1426
1427 err = mlx5_query_nic_vport_mtu(mdev, &hw_mtu);
1428 if (err || !hw_mtu) /* fallback to port oper mtu */
1429 mlx5_query_port_oper_mtu(mdev, &hw_mtu, 1);
1430
1431 *mtu = MLX5E_HW2SW_MTU(hw_mtu);
1432 }
1433
1434 static int mlx5e_set_dev_port_mtu(struct net_device *netdev)
1435 {
1436 struct mlx5e_priv *priv = netdev_priv(netdev);
1437 u16 mtu;
1438 int err;
1439
1440 err = mlx5e_set_mtu(priv, netdev->mtu);
1441 if (err)
1442 return err;
1443
1444 mlx5e_query_mtu(priv, &mtu);
1445 if (mtu != netdev->mtu)
1446 netdev_warn(netdev, "%s: VPort MTU %d is different than netdev mtu %d\n",
1447 __func__, mtu, netdev->mtu);
1448
1449 netdev->mtu = mtu;
1450 return 0;
1451 }
1452
1453 static void mlx5e_netdev_set_tcs(struct net_device *netdev)
1454 {
1455 struct mlx5e_priv *priv = netdev_priv(netdev);
1456 int nch = priv->params.num_channels;
1457 int ntc = priv->params.num_tc;
1458 int tc;
1459
1460 netdev_reset_tc(netdev);
1461
1462 if (ntc == 1)
1463 return;
1464
1465 netdev_set_num_tc(netdev, ntc);
1466
1467 for (tc = 0; tc < ntc; tc++)
1468 netdev_set_tc_queue(netdev, tc, nch, tc * nch);
1469 }
1470
1471 int mlx5e_open_locked(struct net_device *netdev)
1472 {
1473 struct mlx5e_priv *priv = netdev_priv(netdev);
1474 int num_txqs;
1475 int err;
1476
1477 set_bit(MLX5E_STATE_OPENED, &priv->state);
1478
1479 mlx5e_netdev_set_tcs(netdev);
1480
1481 num_txqs = priv->params.num_channels * priv->params.num_tc;
1482 netif_set_real_num_tx_queues(netdev, num_txqs);
1483 netif_set_real_num_rx_queues(netdev, priv->params.num_channels);
1484
1485 err = mlx5e_set_dev_port_mtu(netdev);
1486 if (err)
1487 goto err_clear_state_opened_flag;
1488
1489 err = mlx5e_open_channels(priv);
1490 if (err) {
1491 netdev_err(netdev, "%s: mlx5e_open_channels failed, %d\n",
1492 __func__, err);
1493 goto err_clear_state_opened_flag;
1494 }
1495
1496 err = mlx5e_refresh_tirs_self_loopback_enable(priv);
1497 if (err) {
1498 netdev_err(netdev, "%s: mlx5e_refresh_tirs_self_loopback_enable failed, %d\n",
1499 __func__, err);
1500 goto err_close_channels;
1501 }
1502
1503 mlx5e_redirect_rqts(priv);
1504 mlx5e_update_carrier(priv);
1505 mlx5e_timestamp_init(priv);
1506
1507 queue_delayed_work(priv->wq, &priv->update_stats_work, 0);
1508
1509 return 0;
1510
1511 err_close_channels:
1512 mlx5e_close_channels(priv);
1513 err_clear_state_opened_flag:
1514 clear_bit(MLX5E_STATE_OPENED, &priv->state);
1515 return err;
1516 }
1517
1518 static int mlx5e_open(struct net_device *netdev)
1519 {
1520 struct mlx5e_priv *priv = netdev_priv(netdev);
1521 int err;
1522
1523 mutex_lock(&priv->state_lock);
1524 err = mlx5e_open_locked(netdev);
1525 mutex_unlock(&priv->state_lock);
1526
1527 return err;
1528 }
1529
1530 int mlx5e_close_locked(struct net_device *netdev)
1531 {
1532 struct mlx5e_priv *priv = netdev_priv(netdev);
1533
1534 /* May already be CLOSED in case a previous configuration operation
1535 * (e.g RX/TX queue size change) that involves close&open failed.
1536 */
1537 if (!test_bit(MLX5E_STATE_OPENED, &priv->state))
1538 return 0;
1539
1540 clear_bit(MLX5E_STATE_OPENED, &priv->state);
1541
1542 mlx5e_timestamp_cleanup(priv);
1543 netif_carrier_off(priv->netdev);
1544 mlx5e_redirect_rqts(priv);
1545 mlx5e_close_channels(priv);
1546
1547 return 0;
1548 }
1549
1550 static int mlx5e_close(struct net_device *netdev)
1551 {
1552 struct mlx5e_priv *priv = netdev_priv(netdev);
1553 int err;
1554
1555 mutex_lock(&priv->state_lock);
1556 err = mlx5e_close_locked(netdev);
1557 mutex_unlock(&priv->state_lock);
1558
1559 return err;
1560 }
1561
1562 static int mlx5e_create_drop_rq(struct mlx5e_priv *priv,
1563 struct mlx5e_rq *rq,
1564 struct mlx5e_rq_param *param)
1565 {
1566 struct mlx5_core_dev *mdev = priv->mdev;
1567 void *rqc = param->rqc;
1568 void *rqc_wq = MLX5_ADDR_OF(rqc, rqc, wq);
1569 int err;
1570
1571 param->wq.db_numa_node = param->wq.buf_numa_node;
1572
1573 err = mlx5_wq_ll_create(mdev, &param->wq, rqc_wq, &rq->wq,
1574 &rq->wq_ctrl);
1575 if (err)
1576 return err;
1577
1578 rq->priv = priv;
1579
1580 return 0;
1581 }
1582
1583 static int mlx5e_create_drop_cq(struct mlx5e_priv *priv,
1584 struct mlx5e_cq *cq,
1585 struct mlx5e_cq_param *param)
1586 {
1587 struct mlx5_core_dev *mdev = priv->mdev;
1588 struct mlx5_core_cq *mcq = &cq->mcq;
1589 int eqn_not_used;
1590 unsigned int irqn;
1591 int err;
1592
1593 err = mlx5_cqwq_create(mdev, &param->wq, param->cqc, &cq->wq,
1594 &cq->wq_ctrl);
1595 if (err)
1596 return err;
1597
1598 mlx5_vector2eqn(mdev, param->eq_ix, &eqn_not_used, &irqn);
1599
1600 mcq->cqe_sz = 64;
1601 mcq->set_ci_db = cq->wq_ctrl.db.db;
1602 mcq->arm_db = cq->wq_ctrl.db.db + 1;
1603 *mcq->set_ci_db = 0;
1604 *mcq->arm_db = 0;
1605 mcq->vector = param->eq_ix;
1606 mcq->comp = mlx5e_completion_event;
1607 mcq->event = mlx5e_cq_error_event;
1608 mcq->irqn = irqn;
1609 mcq->uar = &priv->cq_uar;
1610
1611 cq->priv = priv;
1612
1613 return 0;
1614 }
1615
1616 static int mlx5e_open_drop_rq(struct mlx5e_priv *priv)
1617 {
1618 struct mlx5e_cq_param cq_param;
1619 struct mlx5e_rq_param rq_param;
1620 struct mlx5e_rq *rq = &priv->drop_rq;
1621 struct mlx5e_cq *cq = &priv->drop_rq.cq;
1622 int err;
1623
1624 memset(&cq_param, 0, sizeof(cq_param));
1625 memset(&rq_param, 0, sizeof(rq_param));
1626 mlx5e_build_drop_rq_param(&rq_param);
1627
1628 err = mlx5e_create_drop_cq(priv, cq, &cq_param);
1629 if (err)
1630 return err;
1631
1632 err = mlx5e_enable_cq(cq, &cq_param);
1633 if (err)
1634 goto err_destroy_cq;
1635
1636 err = mlx5e_create_drop_rq(priv, rq, &rq_param);
1637 if (err)
1638 goto err_disable_cq;
1639
1640 err = mlx5e_enable_rq(rq, &rq_param);
1641 if (err)
1642 goto err_destroy_rq;
1643
1644 return 0;
1645
1646 err_destroy_rq:
1647 mlx5e_destroy_rq(&priv->drop_rq);
1648
1649 err_disable_cq:
1650 mlx5e_disable_cq(&priv->drop_rq.cq);
1651
1652 err_destroy_cq:
1653 mlx5e_destroy_cq(&priv->drop_rq.cq);
1654
1655 return err;
1656 }
1657
1658 static void mlx5e_close_drop_rq(struct mlx5e_priv *priv)
1659 {
1660 mlx5e_disable_rq(&priv->drop_rq);
1661 mlx5e_destroy_rq(&priv->drop_rq);
1662 mlx5e_disable_cq(&priv->drop_rq.cq);
1663 mlx5e_destroy_cq(&priv->drop_rq.cq);
1664 }
1665
1666 static int mlx5e_create_tis(struct mlx5e_priv *priv, int tc)
1667 {
1668 struct mlx5_core_dev *mdev = priv->mdev;
1669 u32 in[MLX5_ST_SZ_DW(create_tis_in)];
1670 void *tisc = MLX5_ADDR_OF(create_tis_in, in, ctx);
1671
1672 memset(in, 0, sizeof(in));
1673
1674 MLX5_SET(tisc, tisc, prio, tc << 1);
1675 MLX5_SET(tisc, tisc, transport_domain, priv->tdn);
1676
1677 return mlx5_core_create_tis(mdev, in, sizeof(in), &priv->tisn[tc]);
1678 }
1679
1680 static void mlx5e_destroy_tis(struct mlx5e_priv *priv, int tc)
1681 {
1682 mlx5_core_destroy_tis(priv->mdev, priv->tisn[tc]);
1683 }
1684
1685 static int mlx5e_create_tises(struct mlx5e_priv *priv)
1686 {
1687 int err;
1688 int tc;
1689
1690 for (tc = 0; tc < MLX5E_MAX_NUM_TC; tc++) {
1691 err = mlx5e_create_tis(priv, tc);
1692 if (err)
1693 goto err_close_tises;
1694 }
1695
1696 return 0;
1697
1698 err_close_tises:
1699 for (tc--; tc >= 0; tc--)
1700 mlx5e_destroy_tis(priv, tc);
1701
1702 return err;
1703 }
1704
1705 static void mlx5e_destroy_tises(struct mlx5e_priv *priv)
1706 {
1707 int tc;
1708
1709 for (tc = 0; tc < MLX5E_MAX_NUM_TC; tc++)
1710 mlx5e_destroy_tis(priv, tc);
1711 }
1712
1713 static void mlx5e_build_tir_ctx(struct mlx5e_priv *priv, u32 *tirc, int tt)
1714 {
1715 void *hfso = MLX5_ADDR_OF(tirc, tirc, rx_hash_field_selector_outer);
1716
1717 MLX5_SET(tirc, tirc, transport_domain, priv->tdn);
1718
1719 #define MLX5_HASH_IP (MLX5_HASH_FIELD_SEL_SRC_IP |\
1720 MLX5_HASH_FIELD_SEL_DST_IP)
1721
1722 #define MLX5_HASH_IP_L4PORTS (MLX5_HASH_FIELD_SEL_SRC_IP |\
1723 MLX5_HASH_FIELD_SEL_DST_IP |\
1724 MLX5_HASH_FIELD_SEL_L4_SPORT |\
1725 MLX5_HASH_FIELD_SEL_L4_DPORT)
1726
1727 #define MLX5_HASH_IP_IPSEC_SPI (MLX5_HASH_FIELD_SEL_SRC_IP |\
1728 MLX5_HASH_FIELD_SEL_DST_IP |\
1729 MLX5_HASH_FIELD_SEL_IPSEC_SPI)
1730
1731 mlx5e_build_tir_ctx_lro(tirc, priv);
1732
1733 MLX5_SET(tirc, tirc, disp_type, MLX5_TIRC_DISP_TYPE_INDIRECT);
1734
1735 switch (tt) {
1736 case MLX5E_TT_ANY:
1737 MLX5_SET(tirc, tirc, indirect_table,
1738 priv->rqtn[MLX5E_SINGLE_RQ_RQT]);
1739 MLX5_SET(tirc, tirc, rx_hash_fn, MLX5_RX_HASH_FN_INVERTED_XOR8);
1740 break;
1741 default:
1742 MLX5_SET(tirc, tirc, indirect_table,
1743 priv->rqtn[MLX5E_INDIRECTION_RQT]);
1744 mlx5e_build_tir_ctx_hash(tirc, priv);
1745 break;
1746 }
1747
1748 switch (tt) {
1749 case MLX5E_TT_IPV4_TCP:
1750 MLX5_SET(rx_hash_field_select, hfso, l3_prot_type,
1751 MLX5_L3_PROT_TYPE_IPV4);
1752 MLX5_SET(rx_hash_field_select, hfso, l4_prot_type,
1753 MLX5_L4_PROT_TYPE_TCP);
1754 MLX5_SET(rx_hash_field_select, hfso, selected_fields,
1755 MLX5_HASH_IP_L4PORTS);
1756 break;
1757
1758 case MLX5E_TT_IPV6_TCP:
1759 MLX5_SET(rx_hash_field_select, hfso, l3_prot_type,
1760 MLX5_L3_PROT_TYPE_IPV6);
1761 MLX5_SET(rx_hash_field_select, hfso, l4_prot_type,
1762 MLX5_L4_PROT_TYPE_TCP);
1763 MLX5_SET(rx_hash_field_select, hfso, selected_fields,
1764 MLX5_HASH_IP_L4PORTS);
1765 break;
1766
1767 case MLX5E_TT_IPV4_UDP:
1768 MLX5_SET(rx_hash_field_select, hfso, l3_prot_type,
1769 MLX5_L3_PROT_TYPE_IPV4);
1770 MLX5_SET(rx_hash_field_select, hfso, l4_prot_type,
1771 MLX5_L4_PROT_TYPE_UDP);
1772 MLX5_SET(rx_hash_field_select, hfso, selected_fields,
1773 MLX5_HASH_IP_L4PORTS);
1774 break;
1775
1776 case MLX5E_TT_IPV6_UDP:
1777 MLX5_SET(rx_hash_field_select, hfso, l3_prot_type,
1778 MLX5_L3_PROT_TYPE_IPV6);
1779 MLX5_SET(rx_hash_field_select, hfso, l4_prot_type,
1780 MLX5_L4_PROT_TYPE_UDP);
1781 MLX5_SET(rx_hash_field_select, hfso, selected_fields,
1782 MLX5_HASH_IP_L4PORTS);
1783 break;
1784
1785 case MLX5E_TT_IPV4_IPSEC_AH:
1786 MLX5_SET(rx_hash_field_select, hfso, l3_prot_type,
1787 MLX5_L3_PROT_TYPE_IPV4);
1788 MLX5_SET(rx_hash_field_select, hfso, selected_fields,
1789 MLX5_HASH_IP_IPSEC_SPI);
1790 break;
1791
1792 case MLX5E_TT_IPV6_IPSEC_AH:
1793 MLX5_SET(rx_hash_field_select, hfso, l3_prot_type,
1794 MLX5_L3_PROT_TYPE_IPV6);
1795 MLX5_SET(rx_hash_field_select, hfso, selected_fields,
1796 MLX5_HASH_IP_IPSEC_SPI);
1797 break;
1798
1799 case MLX5E_TT_IPV4_IPSEC_ESP:
1800 MLX5_SET(rx_hash_field_select, hfso, l3_prot_type,
1801 MLX5_L3_PROT_TYPE_IPV4);
1802 MLX5_SET(rx_hash_field_select, hfso, selected_fields,
1803 MLX5_HASH_IP_IPSEC_SPI);
1804 break;
1805
1806 case MLX5E_TT_IPV6_IPSEC_ESP:
1807 MLX5_SET(rx_hash_field_select, hfso, l3_prot_type,
1808 MLX5_L3_PROT_TYPE_IPV6);
1809 MLX5_SET(rx_hash_field_select, hfso, selected_fields,
1810 MLX5_HASH_IP_IPSEC_SPI);
1811 break;
1812
1813 case MLX5E_TT_IPV4:
1814 MLX5_SET(rx_hash_field_select, hfso, l3_prot_type,
1815 MLX5_L3_PROT_TYPE_IPV4);
1816 MLX5_SET(rx_hash_field_select, hfso, selected_fields,
1817 MLX5_HASH_IP);
1818 break;
1819
1820 case MLX5E_TT_IPV6:
1821 MLX5_SET(rx_hash_field_select, hfso, l3_prot_type,
1822 MLX5_L3_PROT_TYPE_IPV6);
1823 MLX5_SET(rx_hash_field_select, hfso, selected_fields,
1824 MLX5_HASH_IP);
1825 break;
1826 }
1827 }
1828
1829 static int mlx5e_create_tir(struct mlx5e_priv *priv, int tt)
1830 {
1831 struct mlx5_core_dev *mdev = priv->mdev;
1832 u32 *in;
1833 void *tirc;
1834 int inlen;
1835 int err;
1836
1837 inlen = MLX5_ST_SZ_BYTES(create_tir_in);
1838 in = mlx5_vzalloc(inlen);
1839 if (!in)
1840 return -ENOMEM;
1841
1842 tirc = MLX5_ADDR_OF(create_tir_in, in, ctx);
1843
1844 mlx5e_build_tir_ctx(priv, tirc, tt);
1845
1846 err = mlx5_core_create_tir(mdev, in, inlen, &priv->tirn[tt]);
1847
1848 kvfree(in);
1849
1850 return err;
1851 }
1852
1853 static void mlx5e_destroy_tir(struct mlx5e_priv *priv, int tt)
1854 {
1855 mlx5_core_destroy_tir(priv->mdev, priv->tirn[tt]);
1856 }
1857
1858 static int mlx5e_create_tirs(struct mlx5e_priv *priv)
1859 {
1860 int err;
1861 int i;
1862
1863 for (i = 0; i < MLX5E_NUM_TT; i++) {
1864 err = mlx5e_create_tir(priv, i);
1865 if (err)
1866 goto err_destroy_tirs;
1867 }
1868
1869 return 0;
1870
1871 err_destroy_tirs:
1872 for (i--; i >= 0; i--)
1873 mlx5e_destroy_tir(priv, i);
1874
1875 return err;
1876 }
1877
1878 static void mlx5e_destroy_tirs(struct mlx5e_priv *priv)
1879 {
1880 int i;
1881
1882 for (i = 0; i < MLX5E_NUM_TT; i++)
1883 mlx5e_destroy_tir(priv, i);
1884 }
1885
1886 static int mlx5e_setup_tc(struct net_device *netdev, u8 tc)
1887 {
1888 struct mlx5e_priv *priv = netdev_priv(netdev);
1889 bool was_opened;
1890 int err = 0;
1891
1892 if (tc && tc != MLX5E_MAX_NUM_TC)
1893 return -EINVAL;
1894
1895 mutex_lock(&priv->state_lock);
1896
1897 was_opened = test_bit(MLX5E_STATE_OPENED, &priv->state);
1898 if (was_opened)
1899 mlx5e_close_locked(priv->netdev);
1900
1901 priv->params.num_tc = tc ? tc : 1;
1902
1903 if (was_opened)
1904 err = mlx5e_open_locked(priv->netdev);
1905
1906 mutex_unlock(&priv->state_lock);
1907
1908 return err;
1909 }
1910
1911 static int mlx5e_ndo_setup_tc(struct net_device *dev, u32 handle,
1912 __be16 proto, struct tc_to_netdev *tc)
1913 {
1914 struct mlx5e_priv *priv = netdev_priv(dev);
1915
1916 if (TC_H_MAJ(handle) != TC_H_MAJ(TC_H_INGRESS))
1917 goto mqprio;
1918
1919 switch (tc->type) {
1920 case TC_SETUP_CLSFLOWER:
1921 switch (tc->cls_flower->command) {
1922 case TC_CLSFLOWER_REPLACE:
1923 return mlx5e_configure_flower(priv, proto, tc->cls_flower);
1924 case TC_CLSFLOWER_DESTROY:
1925 return mlx5e_delete_flower(priv, tc->cls_flower);
1926 }
1927 default:
1928 return -EOPNOTSUPP;
1929 }
1930
1931 mqprio:
1932 if (tc->type != TC_SETUP_MQPRIO)
1933 return -EINVAL;
1934
1935 return mlx5e_setup_tc(dev, tc->tc);
1936 }
1937
1938 static struct rtnl_link_stats64 *
1939 mlx5e_get_stats(struct net_device *dev, struct rtnl_link_stats64 *stats)
1940 {
1941 struct mlx5e_priv *priv = netdev_priv(dev);
1942 struct mlx5e_vport_stats *vstats = &priv->stats.vport;
1943
1944 stats->rx_packets = vstats->rx_packets;
1945 stats->rx_bytes = vstats->rx_bytes;
1946 stats->tx_packets = vstats->tx_packets;
1947 stats->tx_bytes = vstats->tx_bytes;
1948 stats->multicast = vstats->rx_multicast_packets +
1949 vstats->tx_multicast_packets;
1950 stats->tx_errors = vstats->tx_error_packets;
1951 stats->rx_errors = vstats->rx_error_packets;
1952 stats->tx_dropped = vstats->tx_queue_dropped;
1953 stats->rx_crc_errors = 0;
1954 stats->rx_length_errors = 0;
1955
1956 return stats;
1957 }
1958
1959 static void mlx5e_set_rx_mode(struct net_device *dev)
1960 {
1961 struct mlx5e_priv *priv = netdev_priv(dev);
1962
1963 queue_work(priv->wq, &priv->set_rx_mode_work);
1964 }
1965
1966 static int mlx5e_set_mac(struct net_device *netdev, void *addr)
1967 {
1968 struct mlx5e_priv *priv = netdev_priv(netdev);
1969 struct sockaddr *saddr = addr;
1970
1971 if (!is_valid_ether_addr(saddr->sa_data))
1972 return -EADDRNOTAVAIL;
1973
1974 netif_addr_lock_bh(netdev);
1975 ether_addr_copy(netdev->dev_addr, saddr->sa_data);
1976 netif_addr_unlock_bh(netdev);
1977
1978 queue_work(priv->wq, &priv->set_rx_mode_work);
1979
1980 return 0;
1981 }
1982
1983 static int mlx5e_set_features(struct net_device *netdev,
1984 netdev_features_t features)
1985 {
1986 struct mlx5e_priv *priv = netdev_priv(netdev);
1987 int err = 0;
1988 netdev_features_t changes = features ^ netdev->features;
1989
1990 mutex_lock(&priv->state_lock);
1991
1992 if (changes & NETIF_F_LRO) {
1993 bool was_opened = test_bit(MLX5E_STATE_OPENED, &priv->state);
1994
1995 if (was_opened)
1996 mlx5e_close_locked(priv->netdev);
1997
1998 priv->params.lro_en = !!(features & NETIF_F_LRO);
1999 err = mlx5e_modify_tirs_lro(priv);
2000 if (err)
2001 mlx5_core_warn(priv->mdev, "lro modify failed, %d\n",
2002 err);
2003
2004 if (was_opened)
2005 err = mlx5e_open_locked(priv->netdev);
2006 }
2007
2008 mutex_unlock(&priv->state_lock);
2009
2010 if (changes & NETIF_F_HW_VLAN_CTAG_FILTER) {
2011 if (features & NETIF_F_HW_VLAN_CTAG_FILTER)
2012 mlx5e_enable_vlan_filter(priv);
2013 else
2014 mlx5e_disable_vlan_filter(priv);
2015 }
2016
2017 if ((changes & NETIF_F_HW_TC) && !(features & NETIF_F_HW_TC) &&
2018 mlx5e_tc_num_filters(priv)) {
2019 netdev_err(netdev,
2020 "Active offloaded tc filters, can't turn hw_tc_offload off\n");
2021 return -EINVAL;
2022 }
2023
2024 return err;
2025 }
2026
2027 #define MXL5_HW_MIN_MTU 64
2028 #define MXL5E_MIN_MTU (MXL5_HW_MIN_MTU + ETH_FCS_LEN)
2029
2030 static int mlx5e_change_mtu(struct net_device *netdev, int new_mtu)
2031 {
2032 struct mlx5e_priv *priv = netdev_priv(netdev);
2033 struct mlx5_core_dev *mdev = priv->mdev;
2034 bool was_opened;
2035 u16 max_mtu;
2036 u16 min_mtu;
2037 int err = 0;
2038
2039 mlx5_query_port_max_mtu(mdev, &max_mtu, 1);
2040
2041 max_mtu = MLX5E_HW2SW_MTU(max_mtu);
2042 min_mtu = MLX5E_HW2SW_MTU(MXL5E_MIN_MTU);
2043
2044 if (new_mtu > max_mtu || new_mtu < min_mtu) {
2045 netdev_err(netdev,
2046 "%s: Bad MTU (%d), valid range is: [%d..%d]\n",
2047 __func__, new_mtu, min_mtu, max_mtu);
2048 return -EINVAL;
2049 }
2050
2051 mutex_lock(&priv->state_lock);
2052
2053 was_opened = test_bit(MLX5E_STATE_OPENED, &priv->state);
2054 if (was_opened)
2055 mlx5e_close_locked(netdev);
2056
2057 netdev->mtu = new_mtu;
2058
2059 if (was_opened)
2060 err = mlx5e_open_locked(netdev);
2061
2062 mutex_unlock(&priv->state_lock);
2063
2064 return err;
2065 }
2066
2067 static int mlx5e_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2068 {
2069 switch (cmd) {
2070 case SIOCSHWTSTAMP:
2071 return mlx5e_hwstamp_set(dev, ifr);
2072 case SIOCGHWTSTAMP:
2073 return mlx5e_hwstamp_get(dev, ifr);
2074 default:
2075 return -EOPNOTSUPP;
2076 }
2077 }
2078
2079 static int mlx5e_set_vf_mac(struct net_device *dev, int vf, u8 *mac)
2080 {
2081 struct mlx5e_priv *priv = netdev_priv(dev);
2082 struct mlx5_core_dev *mdev = priv->mdev;
2083
2084 return mlx5_eswitch_set_vport_mac(mdev->priv.eswitch, vf + 1, mac);
2085 }
2086
2087 static int mlx5e_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos)
2088 {
2089 struct mlx5e_priv *priv = netdev_priv(dev);
2090 struct mlx5_core_dev *mdev = priv->mdev;
2091
2092 return mlx5_eswitch_set_vport_vlan(mdev->priv.eswitch, vf + 1,
2093 vlan, qos);
2094 }
2095
2096 static int mlx5_vport_link2ifla(u8 esw_link)
2097 {
2098 switch (esw_link) {
2099 case MLX5_ESW_VPORT_ADMIN_STATE_DOWN:
2100 return IFLA_VF_LINK_STATE_DISABLE;
2101 case MLX5_ESW_VPORT_ADMIN_STATE_UP:
2102 return IFLA_VF_LINK_STATE_ENABLE;
2103 }
2104 return IFLA_VF_LINK_STATE_AUTO;
2105 }
2106
2107 static int mlx5_ifla_link2vport(u8 ifla_link)
2108 {
2109 switch (ifla_link) {
2110 case IFLA_VF_LINK_STATE_DISABLE:
2111 return MLX5_ESW_VPORT_ADMIN_STATE_DOWN;
2112 case IFLA_VF_LINK_STATE_ENABLE:
2113 return MLX5_ESW_VPORT_ADMIN_STATE_UP;
2114 }
2115 return MLX5_ESW_VPORT_ADMIN_STATE_AUTO;
2116 }
2117
2118 static int mlx5e_set_vf_link_state(struct net_device *dev, int vf,
2119 int link_state)
2120 {
2121 struct mlx5e_priv *priv = netdev_priv(dev);
2122 struct mlx5_core_dev *mdev = priv->mdev;
2123
2124 return mlx5_eswitch_set_vport_state(mdev->priv.eswitch, vf + 1,
2125 mlx5_ifla_link2vport(link_state));
2126 }
2127
2128 static int mlx5e_get_vf_config(struct net_device *dev,
2129 int vf, struct ifla_vf_info *ivi)
2130 {
2131 struct mlx5e_priv *priv = netdev_priv(dev);
2132 struct mlx5_core_dev *mdev = priv->mdev;
2133 int err;
2134
2135 err = mlx5_eswitch_get_vport_config(mdev->priv.eswitch, vf + 1, ivi);
2136 if (err)
2137 return err;
2138 ivi->linkstate = mlx5_vport_link2ifla(ivi->linkstate);
2139 return 0;
2140 }
2141
2142 static int mlx5e_get_vf_stats(struct net_device *dev,
2143 int vf, struct ifla_vf_stats *vf_stats)
2144 {
2145 struct mlx5e_priv *priv = netdev_priv(dev);
2146 struct mlx5_core_dev *mdev = priv->mdev;
2147
2148 return mlx5_eswitch_get_vport_stats(mdev->priv.eswitch, vf + 1,
2149 vf_stats);
2150 }
2151
2152 static void mlx5e_add_vxlan_port(struct net_device *netdev,
2153 sa_family_t sa_family, __be16 port)
2154 {
2155 struct mlx5e_priv *priv = netdev_priv(netdev);
2156
2157 if (!mlx5e_vxlan_allowed(priv->mdev))
2158 return;
2159
2160 mlx5e_vxlan_queue_work(priv, sa_family, be16_to_cpu(port), 1);
2161 }
2162
2163 static void mlx5e_del_vxlan_port(struct net_device *netdev,
2164 sa_family_t sa_family, __be16 port)
2165 {
2166 struct mlx5e_priv *priv = netdev_priv(netdev);
2167
2168 if (!mlx5e_vxlan_allowed(priv->mdev))
2169 return;
2170
2171 mlx5e_vxlan_queue_work(priv, sa_family, be16_to_cpu(port), 0);
2172 }
2173
2174 static netdev_features_t mlx5e_vxlan_features_check(struct mlx5e_priv *priv,
2175 struct sk_buff *skb,
2176 netdev_features_t features)
2177 {
2178 struct udphdr *udph;
2179 u16 proto;
2180 u16 port = 0;
2181
2182 switch (vlan_get_protocol(skb)) {
2183 case htons(ETH_P_IP):
2184 proto = ip_hdr(skb)->protocol;
2185 break;
2186 case htons(ETH_P_IPV6):
2187 proto = ipv6_hdr(skb)->nexthdr;
2188 break;
2189 default:
2190 goto out;
2191 }
2192
2193 if (proto == IPPROTO_UDP) {
2194 udph = udp_hdr(skb);
2195 port = be16_to_cpu(udph->dest);
2196 }
2197
2198 /* Verify if UDP port is being offloaded by HW */
2199 if (port && mlx5e_vxlan_lookup_port(priv, port))
2200 return features;
2201
2202 out:
2203 /* Disable CSUM and GSO if the udp dport is not offloaded by HW */
2204 return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
2205 }
2206
2207 static netdev_features_t mlx5e_features_check(struct sk_buff *skb,
2208 struct net_device *netdev,
2209 netdev_features_t features)
2210 {
2211 struct mlx5e_priv *priv = netdev_priv(netdev);
2212
2213 features = vlan_features_check(skb, features);
2214 features = vxlan_features_check(skb, features);
2215
2216 /* Validate if the tunneled packet is being offloaded by HW */
2217 if (skb->encapsulation &&
2218 (features & NETIF_F_CSUM_MASK || features & NETIF_F_GSO_MASK))
2219 return mlx5e_vxlan_features_check(priv, skb, features);
2220
2221 return features;
2222 }
2223
2224 static const struct net_device_ops mlx5e_netdev_ops_basic = {
2225 .ndo_open = mlx5e_open,
2226 .ndo_stop = mlx5e_close,
2227 .ndo_start_xmit = mlx5e_xmit,
2228 .ndo_setup_tc = mlx5e_ndo_setup_tc,
2229 .ndo_select_queue = mlx5e_select_queue,
2230 .ndo_get_stats64 = mlx5e_get_stats,
2231 .ndo_set_rx_mode = mlx5e_set_rx_mode,
2232 .ndo_set_mac_address = mlx5e_set_mac,
2233 .ndo_vlan_rx_add_vid = mlx5e_vlan_rx_add_vid,
2234 .ndo_vlan_rx_kill_vid = mlx5e_vlan_rx_kill_vid,
2235 .ndo_set_features = mlx5e_set_features,
2236 .ndo_change_mtu = mlx5e_change_mtu,
2237 .ndo_do_ioctl = mlx5e_ioctl,
2238 };
2239
2240 static const struct net_device_ops mlx5e_netdev_ops_sriov = {
2241 .ndo_open = mlx5e_open,
2242 .ndo_stop = mlx5e_close,
2243 .ndo_start_xmit = mlx5e_xmit,
2244 .ndo_setup_tc = mlx5e_ndo_setup_tc,
2245 .ndo_select_queue = mlx5e_select_queue,
2246 .ndo_get_stats64 = mlx5e_get_stats,
2247 .ndo_set_rx_mode = mlx5e_set_rx_mode,
2248 .ndo_set_mac_address = mlx5e_set_mac,
2249 .ndo_vlan_rx_add_vid = mlx5e_vlan_rx_add_vid,
2250 .ndo_vlan_rx_kill_vid = mlx5e_vlan_rx_kill_vid,
2251 .ndo_set_features = mlx5e_set_features,
2252 .ndo_change_mtu = mlx5e_change_mtu,
2253 .ndo_do_ioctl = mlx5e_ioctl,
2254 .ndo_add_vxlan_port = mlx5e_add_vxlan_port,
2255 .ndo_del_vxlan_port = mlx5e_del_vxlan_port,
2256 .ndo_features_check = mlx5e_features_check,
2257 .ndo_set_vf_mac = mlx5e_set_vf_mac,
2258 .ndo_set_vf_vlan = mlx5e_set_vf_vlan,
2259 .ndo_get_vf_config = mlx5e_get_vf_config,
2260 .ndo_set_vf_link_state = mlx5e_set_vf_link_state,
2261 .ndo_get_vf_stats = mlx5e_get_vf_stats,
2262 };
2263
2264 static int mlx5e_check_required_hca_cap(struct mlx5_core_dev *mdev)
2265 {
2266 if (MLX5_CAP_GEN(mdev, port_type) != MLX5_CAP_PORT_TYPE_ETH)
2267 return -ENOTSUPP;
2268 if (!MLX5_CAP_GEN(mdev, eth_net_offloads) ||
2269 !MLX5_CAP_GEN(mdev, nic_flow_table) ||
2270 !MLX5_CAP_ETH(mdev, csum_cap) ||
2271 !MLX5_CAP_ETH(mdev, max_lso_cap) ||
2272 !MLX5_CAP_ETH(mdev, vlan_cap) ||
2273 !MLX5_CAP_ETH(mdev, rss_ind_tbl_cap) ||
2274 MLX5_CAP_FLOWTABLE(mdev,
2275 flow_table_properties_nic_receive.max_ft_level)
2276 < 3) {
2277 mlx5_core_warn(mdev,
2278 "Not creating net device, some required device capabilities are missing\n");
2279 return -ENOTSUPP;
2280 }
2281 if (!MLX5_CAP_ETH(mdev, self_lb_en_modifiable))
2282 mlx5_core_warn(mdev, "Self loop back prevention is not supported\n");
2283 if (!MLX5_CAP_GEN(mdev, cq_moderation))
2284 mlx5_core_warn(mdev, "CQ modiration is not supported\n");
2285
2286 return 0;
2287 }
2288
2289 u16 mlx5e_get_max_inline_cap(struct mlx5_core_dev *mdev)
2290 {
2291 int bf_buf_size = (1 << MLX5_CAP_GEN(mdev, log_bf_reg_size)) / 2;
2292
2293 return bf_buf_size -
2294 sizeof(struct mlx5e_tx_wqe) +
2295 2 /*sizeof(mlx5e_tx_wqe.inline_hdr_start)*/;
2296 }
2297
2298 #ifdef CONFIG_MLX5_CORE_EN_DCB
2299 static void mlx5e_ets_init(struct mlx5e_priv *priv)
2300 {
2301 int i;
2302
2303 priv->params.ets.ets_cap = mlx5_max_tc(priv->mdev) + 1;
2304 for (i = 0; i < priv->params.ets.ets_cap; i++) {
2305 priv->params.ets.tc_tx_bw[i] = MLX5E_MAX_BW_ALLOC;
2306 priv->params.ets.tc_tsa[i] = IEEE_8021QAZ_TSA_VENDOR;
2307 priv->params.ets.prio_tc[i] = i;
2308 }
2309
2310 /* tclass[prio=0]=1, tclass[prio=1]=0, tclass[prio=i]=i (for i>1) */
2311 priv->params.ets.prio_tc[0] = 1;
2312 priv->params.ets.prio_tc[1] = 0;
2313 }
2314 #endif
2315
2316 void mlx5e_build_default_indir_rqt(u32 *indirection_rqt, int len,
2317 int num_channels)
2318 {
2319 int i;
2320
2321 for (i = 0; i < len; i++)
2322 indirection_rqt[i] = i % num_channels;
2323 }
2324
2325 static void mlx5e_build_netdev_priv(struct mlx5_core_dev *mdev,
2326 struct net_device *netdev,
2327 int num_channels)
2328 {
2329 struct mlx5e_priv *priv = netdev_priv(netdev);
2330
2331 priv->params.log_sq_size =
2332 MLX5E_PARAMS_DEFAULT_LOG_SQ_SIZE;
2333 priv->params.log_rq_size =
2334 MLX5E_PARAMS_DEFAULT_LOG_RQ_SIZE;
2335 priv->params.rx_cq_moderation_usec =
2336 MLX5E_PARAMS_DEFAULT_RX_CQ_MODERATION_USEC;
2337 priv->params.rx_cq_moderation_pkts =
2338 MLX5E_PARAMS_DEFAULT_RX_CQ_MODERATION_PKTS;
2339 priv->params.tx_cq_moderation_usec =
2340 MLX5E_PARAMS_DEFAULT_TX_CQ_MODERATION_USEC;
2341 priv->params.tx_cq_moderation_pkts =
2342 MLX5E_PARAMS_DEFAULT_TX_CQ_MODERATION_PKTS;
2343 priv->params.tx_max_inline = mlx5e_get_max_inline_cap(mdev);
2344 priv->params.min_rx_wqes =
2345 MLX5E_PARAMS_DEFAULT_MIN_RX_WQES;
2346 priv->params.num_tc = 1;
2347 priv->params.rss_hfunc = ETH_RSS_HASH_XOR;
2348
2349 netdev_rss_key_fill(priv->params.toeplitz_hash_key,
2350 sizeof(priv->params.toeplitz_hash_key));
2351
2352 mlx5e_build_default_indir_rqt(priv->params.indirection_rqt,
2353 MLX5E_INDIR_RQT_SIZE, num_channels);
2354
2355 priv->params.lro_wqe_sz =
2356 MLX5E_PARAMS_DEFAULT_LRO_WQE_SZ;
2357
2358 priv->mdev = mdev;
2359 priv->netdev = netdev;
2360 priv->params.num_channels = num_channels;
2361
2362 #ifdef CONFIG_MLX5_CORE_EN_DCB
2363 mlx5e_ets_init(priv);
2364 #endif
2365
2366 mutex_init(&priv->state_lock);
2367
2368 INIT_WORK(&priv->update_carrier_work, mlx5e_update_carrier_work);
2369 INIT_WORK(&priv->set_rx_mode_work, mlx5e_set_rx_mode_work);
2370 INIT_DELAYED_WORK(&priv->update_stats_work, mlx5e_update_stats_work);
2371 }
2372
2373 static void mlx5e_set_netdev_dev_addr(struct net_device *netdev)
2374 {
2375 struct mlx5e_priv *priv = netdev_priv(netdev);
2376
2377 mlx5_query_nic_vport_mac_address(priv->mdev, 0, netdev->dev_addr);
2378 if (is_zero_ether_addr(netdev->dev_addr) &&
2379 !MLX5_CAP_GEN(priv->mdev, vport_group_manager)) {
2380 eth_hw_addr_random(netdev);
2381 mlx5_core_info(priv->mdev, "Assigned random MAC address %pM\n", netdev->dev_addr);
2382 }
2383 }
2384
2385 static void mlx5e_build_netdev(struct net_device *netdev)
2386 {
2387 struct mlx5e_priv *priv = netdev_priv(netdev);
2388 struct mlx5_core_dev *mdev = priv->mdev;
2389
2390 SET_NETDEV_DEV(netdev, &mdev->pdev->dev);
2391
2392 if (MLX5_CAP_GEN(mdev, vport_group_manager)) {
2393 netdev->netdev_ops = &mlx5e_netdev_ops_sriov;
2394 #ifdef CONFIG_MLX5_CORE_EN_DCB
2395 netdev->dcbnl_ops = &mlx5e_dcbnl_ops;
2396 #endif
2397 } else {
2398 netdev->netdev_ops = &mlx5e_netdev_ops_basic;
2399 }
2400
2401 netdev->watchdog_timeo = 15 * HZ;
2402
2403 netdev->ethtool_ops = &mlx5e_ethtool_ops;
2404
2405 netdev->vlan_features |= NETIF_F_SG;
2406 netdev->vlan_features |= NETIF_F_IP_CSUM;
2407 netdev->vlan_features |= NETIF_F_IPV6_CSUM;
2408 netdev->vlan_features |= NETIF_F_GRO;
2409 netdev->vlan_features |= NETIF_F_TSO;
2410 netdev->vlan_features |= NETIF_F_TSO6;
2411 netdev->vlan_features |= NETIF_F_RXCSUM;
2412 netdev->vlan_features |= NETIF_F_RXHASH;
2413
2414 if (!!MLX5_CAP_ETH(mdev, lro_cap))
2415 netdev->vlan_features |= NETIF_F_LRO;
2416
2417 netdev->hw_features = netdev->vlan_features;
2418 netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_TX;
2419 netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_RX;
2420 netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_FILTER;
2421
2422 if (mlx5e_vxlan_allowed(mdev)) {
2423 netdev->hw_features |= NETIF_F_GSO_UDP_TUNNEL;
2424 netdev->hw_enc_features |= NETIF_F_IP_CSUM;
2425 netdev->hw_enc_features |= NETIF_F_RXCSUM;
2426 netdev->hw_enc_features |= NETIF_F_TSO;
2427 netdev->hw_enc_features |= NETIF_F_TSO6;
2428 netdev->hw_enc_features |= NETIF_F_RXHASH;
2429 netdev->hw_enc_features |= NETIF_F_GSO_UDP_TUNNEL;
2430 }
2431
2432 netdev->features = netdev->hw_features;
2433 if (!priv->params.lro_en)
2434 netdev->features &= ~NETIF_F_LRO;
2435
2436 #define FT_CAP(f) MLX5_CAP_FLOWTABLE(mdev, flow_table_properties_nic_receive.f)
2437 if (FT_CAP(flow_modify_en) &&
2438 FT_CAP(modify_root) &&
2439 FT_CAP(identified_miss_table_mode) &&
2440 FT_CAP(flow_table_modify))
2441 priv->netdev->hw_features |= NETIF_F_HW_TC;
2442
2443 netdev->features |= NETIF_F_HIGHDMA;
2444
2445 netdev->priv_flags |= IFF_UNICAST_FLT;
2446
2447 mlx5e_set_netdev_dev_addr(netdev);
2448 }
2449
2450 static int mlx5e_create_mkey(struct mlx5e_priv *priv, u32 pdn,
2451 struct mlx5_core_mkey *mkey)
2452 {
2453 struct mlx5_core_dev *mdev = priv->mdev;
2454 struct mlx5_create_mkey_mbox_in *in;
2455 int err;
2456
2457 in = mlx5_vzalloc(sizeof(*in));
2458 if (!in)
2459 return -ENOMEM;
2460
2461 in->seg.flags = MLX5_PERM_LOCAL_WRITE |
2462 MLX5_PERM_LOCAL_READ |
2463 MLX5_ACCESS_MODE_PA;
2464 in->seg.flags_pd = cpu_to_be32(pdn | MLX5_MKEY_LEN64);
2465 in->seg.qpn_mkey7_0 = cpu_to_be32(0xffffff << 8);
2466
2467 err = mlx5_core_create_mkey(mdev, mkey, in, sizeof(*in), NULL, NULL,
2468 NULL);
2469
2470 kvfree(in);
2471
2472 return err;
2473 }
2474
2475 static void *mlx5e_create_netdev(struct mlx5_core_dev *mdev)
2476 {
2477 struct net_device *netdev;
2478 struct mlx5e_priv *priv;
2479 int nch = mlx5e_get_max_num_channels(mdev);
2480 int err;
2481
2482 if (mlx5e_check_required_hca_cap(mdev))
2483 return NULL;
2484
2485 netdev = alloc_etherdev_mqs(sizeof(struct mlx5e_priv),
2486 nch * MLX5E_MAX_NUM_TC,
2487 nch);
2488 if (!netdev) {
2489 mlx5_core_err(mdev, "alloc_etherdev_mqs() failed\n");
2490 return NULL;
2491 }
2492
2493 mlx5e_build_netdev_priv(mdev, netdev, nch);
2494 mlx5e_build_netdev(netdev);
2495
2496 netif_carrier_off(netdev);
2497
2498 priv = netdev_priv(netdev);
2499
2500 priv->wq = create_singlethread_workqueue("mlx5e");
2501 if (!priv->wq)
2502 goto err_free_netdev;
2503
2504 err = mlx5_alloc_map_uar(mdev, &priv->cq_uar, false);
2505 if (err) {
2506 mlx5_core_err(mdev, "alloc_map uar failed, %d\n", err);
2507 goto err_destroy_wq;
2508 }
2509
2510 err = mlx5_core_alloc_pd(mdev, &priv->pdn);
2511 if (err) {
2512 mlx5_core_err(mdev, "alloc pd failed, %d\n", err);
2513 goto err_unmap_free_uar;
2514 }
2515
2516 err = mlx5_core_alloc_transport_domain(mdev, &priv->tdn);
2517 if (err) {
2518 mlx5_core_err(mdev, "alloc td failed, %d\n", err);
2519 goto err_dealloc_pd;
2520 }
2521
2522 err = mlx5e_create_mkey(priv, priv->pdn, &priv->mkey);
2523 if (err) {
2524 mlx5_core_err(mdev, "create mkey failed, %d\n", err);
2525 goto err_dealloc_transport_domain;
2526 }
2527
2528 err = mlx5e_create_tises(priv);
2529 if (err) {
2530 mlx5_core_warn(mdev, "create tises failed, %d\n", err);
2531 goto err_destroy_mkey;
2532 }
2533
2534 err = mlx5e_open_drop_rq(priv);
2535 if (err) {
2536 mlx5_core_err(mdev, "open drop rq failed, %d\n", err);
2537 goto err_destroy_tises;
2538 }
2539
2540 err = mlx5e_create_rqt(priv, MLX5E_INDIRECTION_RQT);
2541 if (err) {
2542 mlx5_core_warn(mdev, "create rqt(INDIR) failed, %d\n", err);
2543 goto err_close_drop_rq;
2544 }
2545
2546 err = mlx5e_create_rqt(priv, MLX5E_SINGLE_RQ_RQT);
2547 if (err) {
2548 mlx5_core_warn(mdev, "create rqt(SINGLE) failed, %d\n", err);
2549 goto err_destroy_rqt_indir;
2550 }
2551
2552 err = mlx5e_create_tirs(priv);
2553 if (err) {
2554 mlx5_core_warn(mdev, "create tirs failed, %d\n", err);
2555 goto err_destroy_rqt_single;
2556 }
2557
2558 err = mlx5e_create_flow_tables(priv);
2559 if (err) {
2560 mlx5_core_warn(mdev, "create flow tables failed, %d\n", err);
2561 goto err_destroy_tirs;
2562 }
2563
2564 mlx5e_init_eth_addr(priv);
2565
2566 mlx5e_vxlan_init(priv);
2567
2568 err = mlx5e_tc_init(priv);
2569 if (err)
2570 goto err_destroy_flow_tables;
2571
2572 #ifdef CONFIG_MLX5_CORE_EN_DCB
2573 mlx5e_dcbnl_ieee_setets_core(priv, &priv->params.ets);
2574 #endif
2575
2576 err = register_netdev(netdev);
2577 if (err) {
2578 mlx5_core_err(mdev, "register_netdev failed, %d\n", err);
2579 goto err_tc_cleanup;
2580 }
2581
2582 if (mlx5e_vxlan_allowed(mdev))
2583 vxlan_get_rx_port(netdev);
2584
2585 mlx5e_enable_async_events(priv);
2586 queue_work(priv->wq, &priv->set_rx_mode_work);
2587
2588 return priv;
2589
2590 err_tc_cleanup:
2591 mlx5e_tc_cleanup(priv);
2592
2593 err_destroy_flow_tables:
2594 mlx5e_destroy_flow_tables(priv);
2595
2596 err_destroy_tirs:
2597 mlx5e_destroy_tirs(priv);
2598
2599 err_destroy_rqt_single:
2600 mlx5e_destroy_rqt(priv, MLX5E_SINGLE_RQ_RQT);
2601
2602 err_destroy_rqt_indir:
2603 mlx5e_destroy_rqt(priv, MLX5E_INDIRECTION_RQT);
2604
2605 err_close_drop_rq:
2606 mlx5e_close_drop_rq(priv);
2607
2608 err_destroy_tises:
2609 mlx5e_destroy_tises(priv);
2610
2611 err_destroy_mkey:
2612 mlx5_core_destroy_mkey(mdev, &priv->mkey);
2613
2614 err_dealloc_transport_domain:
2615 mlx5_core_dealloc_transport_domain(mdev, priv->tdn);
2616
2617 err_dealloc_pd:
2618 mlx5_core_dealloc_pd(mdev, priv->pdn);
2619
2620 err_unmap_free_uar:
2621 mlx5_unmap_free_uar(mdev, &priv->cq_uar);
2622
2623 err_destroy_wq:
2624 destroy_workqueue(priv->wq);
2625
2626 err_free_netdev:
2627 free_netdev(netdev);
2628
2629 return NULL;
2630 }
2631
2632 static void mlx5e_destroy_netdev(struct mlx5_core_dev *mdev, void *vpriv)
2633 {
2634 struct mlx5e_priv *priv = vpriv;
2635 struct net_device *netdev = priv->netdev;
2636
2637 set_bit(MLX5E_STATE_DESTROYING, &priv->state);
2638
2639 queue_work(priv->wq, &priv->set_rx_mode_work);
2640 mlx5e_disable_async_events(priv);
2641 flush_workqueue(priv->wq);
2642 if (test_bit(MLX5_INTERFACE_STATE_SHUTDOWN, &mdev->intf_state)) {
2643 netif_device_detach(netdev);
2644 mutex_lock(&priv->state_lock);
2645 if (test_bit(MLX5E_STATE_OPENED, &priv->state))
2646 mlx5e_close_locked(netdev);
2647 mutex_unlock(&priv->state_lock);
2648 } else {
2649 unregister_netdev(netdev);
2650 }
2651
2652 mlx5e_tc_cleanup(priv);
2653 mlx5e_vxlan_cleanup(priv);
2654 mlx5e_destroy_flow_tables(priv);
2655 mlx5e_destroy_tirs(priv);
2656 mlx5e_destroy_rqt(priv, MLX5E_SINGLE_RQ_RQT);
2657 mlx5e_destroy_rqt(priv, MLX5E_INDIRECTION_RQT);
2658 mlx5e_close_drop_rq(priv);
2659 mlx5e_destroy_tises(priv);
2660 mlx5_core_destroy_mkey(priv->mdev, &priv->mkey);
2661 mlx5_core_dealloc_transport_domain(priv->mdev, priv->tdn);
2662 mlx5_core_dealloc_pd(priv->mdev, priv->pdn);
2663 mlx5_unmap_free_uar(priv->mdev, &priv->cq_uar);
2664 cancel_delayed_work_sync(&priv->update_stats_work);
2665 destroy_workqueue(priv->wq);
2666
2667 if (!test_bit(MLX5_INTERFACE_STATE_SHUTDOWN, &mdev->intf_state))
2668 free_netdev(netdev);
2669 }
2670
2671 static void *mlx5e_get_netdev(void *vpriv)
2672 {
2673 struct mlx5e_priv *priv = vpriv;
2674
2675 return priv->netdev;
2676 }
2677
2678 static struct mlx5_interface mlx5e_interface = {
2679 .add = mlx5e_create_netdev,
2680 .remove = mlx5e_destroy_netdev,
2681 .event = mlx5e_async_event,
2682 .protocol = MLX5_INTERFACE_PROTOCOL_ETH,
2683 .get_dev = mlx5e_get_netdev,
2684 };
2685
2686 void mlx5e_init(void)
2687 {
2688 mlx5_register_interface(&mlx5e_interface);
2689 }
2690
2691 void mlx5e_cleanup(void)
2692 {
2693 mlx5_unregister_interface(&mlx5e_interface);
2694 }
Linux kernel - Deliverables
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