1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright (c) 2018, Intel Corporation. */
3 
4 #include "ice.h"
5 #include "ice_base.h"
6 #include "ice_flow.h"
7 #include "ice_lib.h"
8 #include "ice_fltr.h"
9 #include "ice_dcb_lib.h"
10 #include "ice_devlink.h"
11 #include "ice_vsi_vlan_ops.h"
12 
13 /**
14  * ice_vsi_type_str - maps VSI type enum to string equivalents
15  * @vsi_type: VSI type enum
16  */
ice_vsi_type_str(enum ice_vsi_type vsi_type)17 const char *ice_vsi_type_str(enum ice_vsi_type vsi_type)
18 {
19 	switch (vsi_type) {
20 	case ICE_VSI_PF:
21 		return "ICE_VSI_PF";
22 	case ICE_VSI_VF:
23 		return "ICE_VSI_VF";
24 	case ICE_VSI_CTRL:
25 		return "ICE_VSI_CTRL";
26 	case ICE_VSI_CHNL:
27 		return "ICE_VSI_CHNL";
28 	case ICE_VSI_LB:
29 		return "ICE_VSI_LB";
30 	case ICE_VSI_SWITCHDEV_CTRL:
31 		return "ICE_VSI_SWITCHDEV_CTRL";
32 	default:
33 		return "unknown";
34 	}
35 }
36 
37 /**
38  * ice_vsi_ctrl_all_rx_rings - Start or stop a VSI's Rx rings
39  * @vsi: the VSI being configured
40  * @ena: start or stop the Rx rings
41  *
42  * First enable/disable all of the Rx rings, flush any remaining writes, and
43  * then verify that they have all been enabled/disabled successfully. This will
44  * let all of the register writes complete when enabling/disabling the Rx rings
45  * before waiting for the change in hardware to complete.
46  */
ice_vsi_ctrl_all_rx_rings(struct ice_vsi * vsi,bool ena)47 static int ice_vsi_ctrl_all_rx_rings(struct ice_vsi *vsi, bool ena)
48 {
49 	int ret = 0;
50 	u16 i;
51 
52 	ice_for_each_rxq(vsi, i)
53 		ice_vsi_ctrl_one_rx_ring(vsi, ena, i, false);
54 
55 	ice_flush(&vsi->back->hw);
56 
57 	ice_for_each_rxq(vsi, i) {
58 		ret = ice_vsi_wait_one_rx_ring(vsi, ena, i);
59 		if (ret)
60 			break;
61 	}
62 
63 	return ret;
64 }
65 
66 /**
67  * ice_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the VSI
68  * @vsi: VSI pointer
69  *
70  * On error: returns error code (negative)
71  * On success: returns 0
72  */
ice_vsi_alloc_arrays(struct ice_vsi * vsi)73 static int ice_vsi_alloc_arrays(struct ice_vsi *vsi)
74 {
75 	struct ice_pf *pf = vsi->back;
76 	struct device *dev;
77 
78 	dev = ice_pf_to_dev(pf);
79 	if (vsi->type == ICE_VSI_CHNL)
80 		return 0;
81 
82 	/* allocate memory for both Tx and Rx ring pointers */
83 	vsi->tx_rings = devm_kcalloc(dev, vsi->alloc_txq,
84 				     sizeof(*vsi->tx_rings), GFP_KERNEL);
85 	if (!vsi->tx_rings)
86 		return -ENOMEM;
87 
88 	vsi->rx_rings = devm_kcalloc(dev, vsi->alloc_rxq,
89 				     sizeof(*vsi->rx_rings), GFP_KERNEL);
90 	if (!vsi->rx_rings)
91 		goto err_rings;
92 
93 	/* txq_map needs to have enough space to track both Tx (stack) rings
94 	 * and XDP rings; at this point vsi->num_xdp_txq might not be set,
95 	 * so use num_possible_cpus() as we want to always provide XDP ring
96 	 * per CPU, regardless of queue count settings from user that might
97 	 * have come from ethtool's set_channels() callback;
98 	 */
99 	vsi->txq_map = devm_kcalloc(dev, (vsi->alloc_txq + num_possible_cpus()),
100 				    sizeof(*vsi->txq_map), GFP_KERNEL);
101 
102 	if (!vsi->txq_map)
103 		goto err_txq_map;
104 
105 	vsi->rxq_map = devm_kcalloc(dev, vsi->alloc_rxq,
106 				    sizeof(*vsi->rxq_map), GFP_KERNEL);
107 	if (!vsi->rxq_map)
108 		goto err_rxq_map;
109 
110 	/* There is no need to allocate q_vectors for a loopback VSI. */
111 	if (vsi->type == ICE_VSI_LB)
112 		return 0;
113 
114 	/* allocate memory for q_vector pointers */
115 	vsi->q_vectors = devm_kcalloc(dev, vsi->num_q_vectors,
116 				      sizeof(*vsi->q_vectors), GFP_KERNEL);
117 	if (!vsi->q_vectors)
118 		goto err_vectors;
119 
120 	return 0;
121 
122 err_vectors:
123 	devm_kfree(dev, vsi->rxq_map);
124 err_rxq_map:
125 	devm_kfree(dev, vsi->txq_map);
126 err_txq_map:
127 	devm_kfree(dev, vsi->rx_rings);
128 err_rings:
129 	devm_kfree(dev, vsi->tx_rings);
130 	return -ENOMEM;
131 }
132 
133 /**
134  * ice_vsi_set_num_desc - Set number of descriptors for queues on this VSI
135  * @vsi: the VSI being configured
136  */
ice_vsi_set_num_desc(struct ice_vsi * vsi)137 static void ice_vsi_set_num_desc(struct ice_vsi *vsi)
138 {
139 	switch (vsi->type) {
140 	case ICE_VSI_PF:
141 	case ICE_VSI_SWITCHDEV_CTRL:
142 	case ICE_VSI_CTRL:
143 	case ICE_VSI_LB:
144 		/* a user could change the values of num_[tr]x_desc using
145 		 * ethtool -G so we should keep those values instead of
146 		 * overwriting them with the defaults.
147 		 */
148 		if (!vsi->num_rx_desc)
149 			vsi->num_rx_desc = ICE_DFLT_NUM_RX_DESC;
150 		if (!vsi->num_tx_desc)
151 			vsi->num_tx_desc = ICE_DFLT_NUM_TX_DESC;
152 		break;
153 	default:
154 		dev_dbg(ice_pf_to_dev(vsi->back), "Not setting number of Tx/Rx descriptors for VSI type %d\n",
155 			vsi->type);
156 		break;
157 	}
158 }
159 
160 /**
161  * ice_vsi_set_num_qs - Set number of queues, descriptors and vectors for a VSI
162  * @vsi: the VSI being configured
163  *
164  * Return 0 on success and a negative value on error
165  */
ice_vsi_set_num_qs(struct ice_vsi * vsi)166 static void ice_vsi_set_num_qs(struct ice_vsi *vsi)
167 {
168 	enum ice_vsi_type vsi_type = vsi->type;
169 	struct ice_pf *pf = vsi->back;
170 	struct ice_vf *vf = vsi->vf;
171 
172 	if (WARN_ON(vsi_type == ICE_VSI_VF && !vf))
173 		return;
174 
175 	switch (vsi_type) {
176 	case ICE_VSI_PF:
177 		if (vsi->req_txq) {
178 			vsi->alloc_txq = vsi->req_txq;
179 			vsi->num_txq = vsi->req_txq;
180 		} else {
181 			vsi->alloc_txq = min3(pf->num_lan_msix,
182 					      ice_get_avail_txq_count(pf),
183 					      (u16)num_online_cpus());
184 		}
185 
186 		pf->num_lan_tx = vsi->alloc_txq;
187 
188 		/* only 1 Rx queue unless RSS is enabled */
189 		if (!test_bit(ICE_FLAG_RSS_ENA, pf->flags)) {
190 			vsi->alloc_rxq = 1;
191 		} else {
192 			if (vsi->req_rxq) {
193 				vsi->alloc_rxq = vsi->req_rxq;
194 				vsi->num_rxq = vsi->req_rxq;
195 			} else {
196 				vsi->alloc_rxq = min3(pf->num_lan_msix,
197 						      ice_get_avail_rxq_count(pf),
198 						      (u16)num_online_cpus());
199 			}
200 		}
201 
202 		pf->num_lan_rx = vsi->alloc_rxq;
203 
204 		vsi->num_q_vectors = min_t(int, pf->num_lan_msix,
205 					   max_t(int, vsi->alloc_rxq,
206 						 vsi->alloc_txq));
207 		break;
208 	case ICE_VSI_SWITCHDEV_CTRL:
209 		/* The number of queues for ctrl VSI is equal to number of VFs.
210 		 * Each ring is associated to the corresponding VF_PR netdev.
211 		 */
212 		vsi->alloc_txq = ice_get_num_vfs(pf);
213 		vsi->alloc_rxq = vsi->alloc_txq;
214 		vsi->num_q_vectors = 1;
215 		break;
216 	case ICE_VSI_VF:
217 		if (vf->num_req_qs)
218 			vf->num_vf_qs = vf->num_req_qs;
219 		vsi->alloc_txq = vf->num_vf_qs;
220 		vsi->alloc_rxq = vf->num_vf_qs;
221 		/* pf->vfs.num_msix_per includes (VF miscellaneous vector +
222 		 * data queue interrupts). Since vsi->num_q_vectors is number
223 		 * of queues vectors, subtract 1 (ICE_NONQ_VECS_VF) from the
224 		 * original vector count
225 		 */
226 		vsi->num_q_vectors = pf->vfs.num_msix_per - ICE_NONQ_VECS_VF;
227 		break;
228 	case ICE_VSI_CTRL:
229 		vsi->alloc_txq = 1;
230 		vsi->alloc_rxq = 1;
231 		vsi->num_q_vectors = 1;
232 		break;
233 	case ICE_VSI_CHNL:
234 		vsi->alloc_txq = 0;
235 		vsi->alloc_rxq = 0;
236 		break;
237 	case ICE_VSI_LB:
238 		vsi->alloc_txq = 1;
239 		vsi->alloc_rxq = 1;
240 		break;
241 	default:
242 		dev_warn(ice_pf_to_dev(pf), "Unknown VSI type %d\n", vsi_type);
243 		break;
244 	}
245 
246 	ice_vsi_set_num_desc(vsi);
247 }
248 
249 /**
250  * ice_get_free_slot - get the next non-NULL location index in array
251  * @array: array to search
252  * @size: size of the array
253  * @curr: last known occupied index to be used as a search hint
254  *
255  * void * is being used to keep the functionality generic. This lets us use this
256  * function on any array of pointers.
257  */
ice_get_free_slot(void * array,int size,int curr)258 static int ice_get_free_slot(void *array, int size, int curr)
259 {
260 	int **tmp_array = (int **)array;
261 	int next;
262 
263 	if (curr < (size - 1) && !tmp_array[curr + 1]) {
264 		next = curr + 1;
265 	} else {
266 		int i = 0;
267 
268 		while ((i < size) && (tmp_array[i]))
269 			i++;
270 		if (i == size)
271 			next = ICE_NO_VSI;
272 		else
273 			next = i;
274 	}
275 	return next;
276 }
277 
278 /**
279  * ice_vsi_delete_from_hw - delete a VSI from the switch
280  * @vsi: pointer to VSI being removed
281  */
ice_vsi_delete_from_hw(struct ice_vsi * vsi)282 static void ice_vsi_delete_from_hw(struct ice_vsi *vsi)
283 {
284 	struct ice_pf *pf = vsi->back;
285 	struct ice_vsi_ctx *ctxt;
286 	int status;
287 
288 	ice_fltr_remove_all(vsi);
289 	ctxt = kzalloc(sizeof(*ctxt), GFP_KERNEL);
290 	if (!ctxt)
291 		return;
292 
293 	if (vsi->type == ICE_VSI_VF)
294 		ctxt->vf_num = vsi->vf->vf_id;
295 	ctxt->vsi_num = vsi->vsi_num;
296 
297 	memcpy(&ctxt->info, &vsi->info, sizeof(ctxt->info));
298 
299 	status = ice_free_vsi(&pf->hw, vsi->idx, ctxt, false, NULL);
300 	if (status)
301 		dev_err(ice_pf_to_dev(pf), "Failed to delete VSI %i in FW - error: %d\n",
302 			vsi->vsi_num, status);
303 
304 	kfree(ctxt);
305 }
306 
307 /**
308  * ice_vsi_free_arrays - De-allocate queue and vector pointer arrays for the VSI
309  * @vsi: pointer to VSI being cleared
310  */
ice_vsi_free_arrays(struct ice_vsi * vsi)311 static void ice_vsi_free_arrays(struct ice_vsi *vsi)
312 {
313 	struct ice_pf *pf = vsi->back;
314 	struct device *dev;
315 
316 	dev = ice_pf_to_dev(pf);
317 
318 	/* free the ring and vector containers */
319 	devm_kfree(dev, vsi->q_vectors);
320 	vsi->q_vectors = NULL;
321 	devm_kfree(dev, vsi->tx_rings);
322 	vsi->tx_rings = NULL;
323 	devm_kfree(dev, vsi->rx_rings);
324 	vsi->rx_rings = NULL;
325 	devm_kfree(dev, vsi->txq_map);
326 	vsi->txq_map = NULL;
327 	devm_kfree(dev, vsi->rxq_map);
328 	vsi->rxq_map = NULL;
329 }
330 
331 /**
332  * ice_vsi_free_stats - Free the ring statistics structures
333  * @vsi: VSI pointer
334  */
ice_vsi_free_stats(struct ice_vsi * vsi)335 static void ice_vsi_free_stats(struct ice_vsi *vsi)
336 {
337 	struct ice_vsi_stats *vsi_stat;
338 	struct ice_pf *pf = vsi->back;
339 	int i;
340 
341 	if (vsi->type == ICE_VSI_CHNL)
342 		return;
343 	if (!pf->vsi_stats)
344 		return;
345 
346 	vsi_stat = pf->vsi_stats[vsi->idx];
347 	if (!vsi_stat)
348 		return;
349 
350 	ice_for_each_alloc_txq(vsi, i) {
351 		if (vsi_stat->tx_ring_stats[i]) {
352 			kfree_rcu(vsi_stat->tx_ring_stats[i], rcu);
353 			WRITE_ONCE(vsi_stat->tx_ring_stats[i], NULL);
354 		}
355 	}
356 
357 	ice_for_each_alloc_rxq(vsi, i) {
358 		if (vsi_stat->rx_ring_stats[i]) {
359 			kfree_rcu(vsi_stat->rx_ring_stats[i], rcu);
360 			WRITE_ONCE(vsi_stat->rx_ring_stats[i], NULL);
361 		}
362 	}
363 
364 	kfree(vsi_stat->tx_ring_stats);
365 	kfree(vsi_stat->rx_ring_stats);
366 	kfree(vsi_stat);
367 	pf->vsi_stats[vsi->idx] = NULL;
368 }
369 
370 /**
371  * ice_vsi_alloc_ring_stats - Allocates Tx and Rx ring stats for the VSI
372  * @vsi: VSI which is having stats allocated
373  */
ice_vsi_alloc_ring_stats(struct ice_vsi * vsi)374 static int ice_vsi_alloc_ring_stats(struct ice_vsi *vsi)
375 {
376 	struct ice_ring_stats **tx_ring_stats;
377 	struct ice_ring_stats **rx_ring_stats;
378 	struct ice_vsi_stats *vsi_stats;
379 	struct ice_pf *pf = vsi->back;
380 	u16 i;
381 
382 	vsi_stats = pf->vsi_stats[vsi->idx];
383 	tx_ring_stats = vsi_stats->tx_ring_stats;
384 	rx_ring_stats = vsi_stats->rx_ring_stats;
385 
386 	/* Allocate Tx ring stats */
387 	ice_for_each_alloc_txq(vsi, i) {
388 		struct ice_ring_stats *ring_stats;
389 		struct ice_tx_ring *ring;
390 
391 		ring = vsi->tx_rings[i];
392 		ring_stats = tx_ring_stats[i];
393 
394 		if (!ring_stats) {
395 			ring_stats = kzalloc(sizeof(*ring_stats), GFP_KERNEL);
396 			if (!ring_stats)
397 				goto err_out;
398 
399 			WRITE_ONCE(tx_ring_stats[i], ring_stats);
400 		}
401 
402 		ring->ring_stats = ring_stats;
403 	}
404 
405 	/* Allocate Rx ring stats */
406 	ice_for_each_alloc_rxq(vsi, i) {
407 		struct ice_ring_stats *ring_stats;
408 		struct ice_rx_ring *ring;
409 
410 		ring = vsi->rx_rings[i];
411 		ring_stats = rx_ring_stats[i];
412 
413 		if (!ring_stats) {
414 			ring_stats = kzalloc(sizeof(*ring_stats), GFP_KERNEL);
415 			if (!ring_stats)
416 				goto err_out;
417 
418 			WRITE_ONCE(rx_ring_stats[i], ring_stats);
419 		}
420 
421 		ring->ring_stats = ring_stats;
422 	}
423 
424 	return 0;
425 
426 err_out:
427 	ice_vsi_free_stats(vsi);
428 	return -ENOMEM;
429 }
430 
431 /**
432  * ice_vsi_free - clean up and deallocate the provided VSI
433  * @vsi: pointer to VSI being cleared
434  *
435  * This deallocates the VSI's queue resources, removes it from the PF's
436  * VSI array if necessary, and deallocates the VSI
437  */
ice_vsi_free(struct ice_vsi * vsi)438 static void ice_vsi_free(struct ice_vsi *vsi)
439 {
440 	struct ice_pf *pf = NULL;
441 	struct device *dev;
442 
443 	if (!vsi || !vsi->back)
444 		return;
445 
446 	pf = vsi->back;
447 	dev = ice_pf_to_dev(pf);
448 
449 	if (!pf->vsi[vsi->idx] || pf->vsi[vsi->idx] != vsi) {
450 		dev_dbg(dev, "vsi does not exist at pf->vsi[%d]\n", vsi->idx);
451 		return;
452 	}
453 
454 	mutex_lock(&pf->sw_mutex);
455 	/* updates the PF for this cleared VSI */
456 
457 	pf->vsi[vsi->idx] = NULL;
458 	pf->next_vsi = vsi->idx;
459 
460 	ice_vsi_free_stats(vsi);
461 	ice_vsi_free_arrays(vsi);
462 	mutex_unlock(&pf->sw_mutex);
463 	devm_kfree(dev, vsi);
464 }
465 
ice_vsi_delete(struct ice_vsi * vsi)466 void ice_vsi_delete(struct ice_vsi *vsi)
467 {
468 	ice_vsi_delete_from_hw(vsi);
469 	ice_vsi_free(vsi);
470 }
471 
472 /**
473  * ice_msix_clean_ctrl_vsi - MSIX mode interrupt handler for ctrl VSI
474  * @irq: interrupt number
475  * @data: pointer to a q_vector
476  */
ice_msix_clean_ctrl_vsi(int __always_unused irq,void * data)477 static irqreturn_t ice_msix_clean_ctrl_vsi(int __always_unused irq, void *data)
478 {
479 	struct ice_q_vector *q_vector = (struct ice_q_vector *)data;
480 
481 	if (!q_vector->tx.tx_ring)
482 		return IRQ_HANDLED;
483 
484 #define FDIR_RX_DESC_CLEAN_BUDGET 64
485 	ice_clean_rx_irq(q_vector->rx.rx_ring, FDIR_RX_DESC_CLEAN_BUDGET);
486 	ice_clean_ctrl_tx_irq(q_vector->tx.tx_ring);
487 
488 	return IRQ_HANDLED;
489 }
490 
491 /**
492  * ice_msix_clean_rings - MSIX mode Interrupt Handler
493  * @irq: interrupt number
494  * @data: pointer to a q_vector
495  */
ice_msix_clean_rings(int __always_unused irq,void * data)496 static irqreturn_t ice_msix_clean_rings(int __always_unused irq, void *data)
497 {
498 	struct ice_q_vector *q_vector = (struct ice_q_vector *)data;
499 
500 	if (!q_vector->tx.tx_ring && !q_vector->rx.rx_ring)
501 		return IRQ_HANDLED;
502 
503 	q_vector->total_events++;
504 
505 	napi_schedule(&q_vector->napi);
506 
507 	return IRQ_HANDLED;
508 }
509 
ice_eswitch_msix_clean_rings(int __always_unused irq,void * data)510 static irqreturn_t ice_eswitch_msix_clean_rings(int __always_unused irq, void *data)
511 {
512 	struct ice_q_vector *q_vector = (struct ice_q_vector *)data;
513 	struct ice_pf *pf = q_vector->vsi->back;
514 	struct ice_vf *vf;
515 	unsigned int bkt;
516 
517 	if (!q_vector->tx.tx_ring && !q_vector->rx.rx_ring)
518 		return IRQ_HANDLED;
519 
520 	rcu_read_lock();
521 	ice_for_each_vf_rcu(pf, bkt, vf)
522 		napi_schedule(&vf->repr->q_vector->napi);
523 	rcu_read_unlock();
524 
525 	return IRQ_HANDLED;
526 }
527 
528 /**
529  * ice_vsi_alloc_stat_arrays - Allocate statistics arrays
530  * @vsi: VSI pointer
531  */
ice_vsi_alloc_stat_arrays(struct ice_vsi * vsi)532 static int ice_vsi_alloc_stat_arrays(struct ice_vsi *vsi)
533 {
534 	struct ice_vsi_stats *vsi_stat;
535 	struct ice_pf *pf = vsi->back;
536 
537 	if (vsi->type == ICE_VSI_CHNL)
538 		return 0;
539 	if (!pf->vsi_stats)
540 		return -ENOENT;
541 
542 	if (pf->vsi_stats[vsi->idx])
543 	/* realloc will happen in rebuild path */
544 		return 0;
545 
546 	vsi_stat = kzalloc(sizeof(*vsi_stat), GFP_KERNEL);
547 	if (!vsi_stat)
548 		return -ENOMEM;
549 
550 	vsi_stat->tx_ring_stats =
551 		kcalloc(vsi->alloc_txq, sizeof(*vsi_stat->tx_ring_stats),
552 			GFP_KERNEL);
553 	if (!vsi_stat->tx_ring_stats)
554 		goto err_alloc_tx;
555 
556 	vsi_stat->rx_ring_stats =
557 		kcalloc(vsi->alloc_rxq, sizeof(*vsi_stat->rx_ring_stats),
558 			GFP_KERNEL);
559 	if (!vsi_stat->rx_ring_stats)
560 		goto err_alloc_rx;
561 
562 	pf->vsi_stats[vsi->idx] = vsi_stat;
563 
564 	return 0;
565 
566 err_alloc_rx:
567 	kfree(vsi_stat->rx_ring_stats);
568 err_alloc_tx:
569 	kfree(vsi_stat->tx_ring_stats);
570 	kfree(vsi_stat);
571 	pf->vsi_stats[vsi->idx] = NULL;
572 	return -ENOMEM;
573 }
574 
575 /**
576  * ice_vsi_alloc_def - set default values for already allocated VSI
577  * @vsi: ptr to VSI
578  * @ch: ptr to channel
579  */
580 static int
ice_vsi_alloc_def(struct ice_vsi * vsi,struct ice_channel * ch)581 ice_vsi_alloc_def(struct ice_vsi *vsi, struct ice_channel *ch)
582 {
583 	if (vsi->type != ICE_VSI_CHNL) {
584 		ice_vsi_set_num_qs(vsi);
585 		if (ice_vsi_alloc_arrays(vsi))
586 			return -ENOMEM;
587 	}
588 
589 	switch (vsi->type) {
590 	case ICE_VSI_SWITCHDEV_CTRL:
591 		/* Setup eswitch MSIX irq handler for VSI */
592 		vsi->irq_handler = ice_eswitch_msix_clean_rings;
593 		break;
594 	case ICE_VSI_PF:
595 		/* Setup default MSIX irq handler for VSI */
596 		vsi->irq_handler = ice_msix_clean_rings;
597 		break;
598 	case ICE_VSI_CTRL:
599 		/* Setup ctrl VSI MSIX irq handler */
600 		vsi->irq_handler = ice_msix_clean_ctrl_vsi;
601 		break;
602 	case ICE_VSI_CHNL:
603 		if (!ch)
604 			return -EINVAL;
605 
606 		vsi->num_rxq = ch->num_rxq;
607 		vsi->num_txq = ch->num_txq;
608 		vsi->next_base_q = ch->base_q;
609 		break;
610 	case ICE_VSI_VF:
611 	case ICE_VSI_LB:
612 		break;
613 	default:
614 		ice_vsi_free_arrays(vsi);
615 		return -EINVAL;
616 	}
617 
618 	return 0;
619 }
620 
621 /**
622  * ice_vsi_alloc - Allocates the next available struct VSI in the PF
623  * @pf: board private structure
624  *
625  * Reserves a VSI index from the PF and allocates an empty VSI structure
626  * without a type. The VSI structure must later be initialized by calling
627  * ice_vsi_cfg().
628  *
629  * returns a pointer to a VSI on success, NULL on failure.
630  */
ice_vsi_alloc(struct ice_pf * pf)631 static struct ice_vsi *ice_vsi_alloc(struct ice_pf *pf)
632 {
633 	struct device *dev = ice_pf_to_dev(pf);
634 	struct ice_vsi *vsi = NULL;
635 
636 	/* Need to protect the allocation of the VSIs at the PF level */
637 	mutex_lock(&pf->sw_mutex);
638 
639 	/* If we have already allocated our maximum number of VSIs,
640 	 * pf->next_vsi will be ICE_NO_VSI. If not, pf->next_vsi index
641 	 * is available to be populated
642 	 */
643 	if (pf->next_vsi == ICE_NO_VSI) {
644 		dev_dbg(dev, "out of VSI slots!\n");
645 		goto unlock_pf;
646 	}
647 
648 	vsi = devm_kzalloc(dev, sizeof(*vsi), GFP_KERNEL);
649 	if (!vsi)
650 		goto unlock_pf;
651 
652 	vsi->back = pf;
653 	set_bit(ICE_VSI_DOWN, vsi->state);
654 
655 	/* fill slot and make note of the index */
656 	vsi->idx = pf->next_vsi;
657 	pf->vsi[pf->next_vsi] = vsi;
658 
659 	/* prepare pf->next_vsi for next use */
660 	pf->next_vsi = ice_get_free_slot(pf->vsi, pf->num_alloc_vsi,
661 					 pf->next_vsi);
662 
663 unlock_pf:
664 	mutex_unlock(&pf->sw_mutex);
665 	return vsi;
666 }
667 
668 /**
669  * ice_alloc_fd_res - Allocate FD resource for a VSI
670  * @vsi: pointer to the ice_vsi
671  *
672  * This allocates the FD resources
673  *
674  * Returns 0 on success, -EPERM on no-op or -EIO on failure
675  */
ice_alloc_fd_res(struct ice_vsi * vsi)676 static int ice_alloc_fd_res(struct ice_vsi *vsi)
677 {
678 	struct ice_pf *pf = vsi->back;
679 	u32 g_val, b_val;
680 
681 	/* Flow Director filters are only allocated/assigned to the PF VSI or
682 	 * CHNL VSI which passes the traffic. The CTRL VSI is only used to
683 	 * add/delete filters so resources are not allocated to it
684 	 */
685 	if (!test_bit(ICE_FLAG_FD_ENA, pf->flags))
686 		return -EPERM;
687 
688 	if (!(vsi->type == ICE_VSI_PF || vsi->type == ICE_VSI_VF ||
689 	      vsi->type == ICE_VSI_CHNL))
690 		return -EPERM;
691 
692 	/* FD filters from guaranteed pool per VSI */
693 	g_val = pf->hw.func_caps.fd_fltr_guar;
694 	if (!g_val)
695 		return -EPERM;
696 
697 	/* FD filters from best effort pool */
698 	b_val = pf->hw.func_caps.fd_fltr_best_effort;
699 	if (!b_val)
700 		return -EPERM;
701 
702 	/* PF main VSI gets only 64 FD resources from guaranteed pool
703 	 * when ADQ is configured.
704 	 */
705 #define ICE_PF_VSI_GFLTR	64
706 
707 	/* determine FD filter resources per VSI from shared(best effort) and
708 	 * dedicated pool
709 	 */
710 	if (vsi->type == ICE_VSI_PF) {
711 		vsi->num_gfltr = g_val;
712 		/* if MQPRIO is configured, main VSI doesn't get all FD
713 		 * resources from guaranteed pool. PF VSI gets 64 FD resources
714 		 */
715 		if (test_bit(ICE_FLAG_TC_MQPRIO, pf->flags)) {
716 			if (g_val < ICE_PF_VSI_GFLTR)
717 				return -EPERM;
718 			/* allow bare minimum entries for PF VSI */
719 			vsi->num_gfltr = ICE_PF_VSI_GFLTR;
720 		}
721 
722 		/* each VSI gets same "best_effort" quota */
723 		vsi->num_bfltr = b_val;
724 	} else if (vsi->type == ICE_VSI_VF) {
725 		vsi->num_gfltr = 0;
726 
727 		/* each VSI gets same "best_effort" quota */
728 		vsi->num_bfltr = b_val;
729 	} else {
730 		struct ice_vsi *main_vsi;
731 		int numtc;
732 
733 		main_vsi = ice_get_main_vsi(pf);
734 		if (!main_vsi)
735 			return -EPERM;
736 
737 		if (!main_vsi->all_numtc)
738 			return -EINVAL;
739 
740 		/* figure out ADQ numtc */
741 		numtc = main_vsi->all_numtc - ICE_CHNL_START_TC;
742 
743 		/* only one TC but still asking resources for channels,
744 		 * invalid config
745 		 */
746 		if (numtc < ICE_CHNL_START_TC)
747 			return -EPERM;
748 
749 		g_val -= ICE_PF_VSI_GFLTR;
750 		/* channel VSIs gets equal share from guaranteed pool */
751 		vsi->num_gfltr = g_val / numtc;
752 
753 		/* each VSI gets same "best_effort" quota */
754 		vsi->num_bfltr = b_val;
755 	}
756 
757 	return 0;
758 }
759 
760 /**
761  * ice_vsi_get_qs - Assign queues from PF to VSI
762  * @vsi: the VSI to assign queues to
763  *
764  * Returns 0 on success and a negative value on error
765  */
ice_vsi_get_qs(struct ice_vsi * vsi)766 static int ice_vsi_get_qs(struct ice_vsi *vsi)
767 {
768 	struct ice_pf *pf = vsi->back;
769 	struct ice_qs_cfg tx_qs_cfg = {
770 		.qs_mutex = &pf->avail_q_mutex,
771 		.pf_map = pf->avail_txqs,
772 		.pf_map_size = pf->max_pf_txqs,
773 		.q_count = vsi->alloc_txq,
774 		.scatter_count = ICE_MAX_SCATTER_TXQS,
775 		.vsi_map = vsi->txq_map,
776 		.vsi_map_offset = 0,
777 		.mapping_mode = ICE_VSI_MAP_CONTIG
778 	};
779 	struct ice_qs_cfg rx_qs_cfg = {
780 		.qs_mutex = &pf->avail_q_mutex,
781 		.pf_map = pf->avail_rxqs,
782 		.pf_map_size = pf->max_pf_rxqs,
783 		.q_count = vsi->alloc_rxq,
784 		.scatter_count = ICE_MAX_SCATTER_RXQS,
785 		.vsi_map = vsi->rxq_map,
786 		.vsi_map_offset = 0,
787 		.mapping_mode = ICE_VSI_MAP_CONTIG
788 	};
789 	int ret;
790 
791 	if (vsi->type == ICE_VSI_CHNL)
792 		return 0;
793 
794 	ret = __ice_vsi_get_qs(&tx_qs_cfg);
795 	if (ret)
796 		return ret;
797 	vsi->tx_mapping_mode = tx_qs_cfg.mapping_mode;
798 
799 	ret = __ice_vsi_get_qs(&rx_qs_cfg);
800 	if (ret)
801 		return ret;
802 	vsi->rx_mapping_mode = rx_qs_cfg.mapping_mode;
803 
804 	return 0;
805 }
806 
807 /**
808  * ice_vsi_put_qs - Release queues from VSI to PF
809  * @vsi: the VSI that is going to release queues
810  */
ice_vsi_put_qs(struct ice_vsi * vsi)811 static void ice_vsi_put_qs(struct ice_vsi *vsi)
812 {
813 	struct ice_pf *pf = vsi->back;
814 	int i;
815 
816 	mutex_lock(&pf->avail_q_mutex);
817 
818 	ice_for_each_alloc_txq(vsi, i) {
819 		clear_bit(vsi->txq_map[i], pf->avail_txqs);
820 		vsi->txq_map[i] = ICE_INVAL_Q_INDEX;
821 	}
822 
823 	ice_for_each_alloc_rxq(vsi, i) {
824 		clear_bit(vsi->rxq_map[i], pf->avail_rxqs);
825 		vsi->rxq_map[i] = ICE_INVAL_Q_INDEX;
826 	}
827 
828 	mutex_unlock(&pf->avail_q_mutex);
829 }
830 
831 /**
832  * ice_is_safe_mode
833  * @pf: pointer to the PF struct
834  *
835  * returns true if driver is in safe mode, false otherwise
836  */
ice_is_safe_mode(struct ice_pf * pf)837 bool ice_is_safe_mode(struct ice_pf *pf)
838 {
839 	return !test_bit(ICE_FLAG_ADV_FEATURES, pf->flags);
840 }
841 
842 /**
843  * ice_is_rdma_ena
844  * @pf: pointer to the PF struct
845  *
846  * returns true if RDMA is currently supported, false otherwise
847  */
ice_is_rdma_ena(struct ice_pf * pf)848 bool ice_is_rdma_ena(struct ice_pf *pf)
849 {
850 	return test_bit(ICE_FLAG_RDMA_ENA, pf->flags);
851 }
852 
853 /**
854  * ice_vsi_clean_rss_flow_fld - Delete RSS configuration
855  * @vsi: the VSI being cleaned up
856  *
857  * This function deletes RSS input set for all flows that were configured
858  * for this VSI
859  */
ice_vsi_clean_rss_flow_fld(struct ice_vsi * vsi)860 static void ice_vsi_clean_rss_flow_fld(struct ice_vsi *vsi)
861 {
862 	struct ice_pf *pf = vsi->back;
863 	int status;
864 
865 	if (ice_is_safe_mode(pf))
866 		return;
867 
868 	status = ice_rem_vsi_rss_cfg(&pf->hw, vsi->idx);
869 	if (status)
870 		dev_dbg(ice_pf_to_dev(pf), "ice_rem_vsi_rss_cfg failed for vsi = %d, error = %d\n",
871 			vsi->vsi_num, status);
872 }
873 
874 /**
875  * ice_rss_clean - Delete RSS related VSI structures and configuration
876  * @vsi: the VSI being removed
877  */
ice_rss_clean(struct ice_vsi * vsi)878 static void ice_rss_clean(struct ice_vsi *vsi)
879 {
880 	struct ice_pf *pf = vsi->back;
881 	struct device *dev;
882 
883 	dev = ice_pf_to_dev(pf);
884 
885 	devm_kfree(dev, vsi->rss_hkey_user);
886 	devm_kfree(dev, vsi->rss_lut_user);
887 
888 	ice_vsi_clean_rss_flow_fld(vsi);
889 	/* remove RSS replay list */
890 	if (!ice_is_safe_mode(pf))
891 		ice_rem_vsi_rss_list(&pf->hw, vsi->idx);
892 }
893 
894 /**
895  * ice_vsi_set_rss_params - Setup RSS capabilities per VSI type
896  * @vsi: the VSI being configured
897  */
ice_vsi_set_rss_params(struct ice_vsi * vsi)898 static void ice_vsi_set_rss_params(struct ice_vsi *vsi)
899 {
900 	struct ice_hw_common_caps *cap;
901 	struct ice_pf *pf = vsi->back;
902 	u16 max_rss_size;
903 
904 	if (!test_bit(ICE_FLAG_RSS_ENA, pf->flags)) {
905 		vsi->rss_size = 1;
906 		return;
907 	}
908 
909 	cap = &pf->hw.func_caps.common_cap;
910 	max_rss_size = BIT(cap->rss_table_entry_width);
911 	switch (vsi->type) {
912 	case ICE_VSI_CHNL:
913 	case ICE_VSI_PF:
914 		/* PF VSI will inherit RSS instance of PF */
915 		vsi->rss_table_size = (u16)cap->rss_table_size;
916 		if (vsi->type == ICE_VSI_CHNL)
917 			vsi->rss_size = min_t(u16, vsi->num_rxq, max_rss_size);
918 		else
919 			vsi->rss_size = min_t(u16, num_online_cpus(),
920 					      max_rss_size);
921 		vsi->rss_lut_type = ICE_LUT_PF;
922 		break;
923 	case ICE_VSI_SWITCHDEV_CTRL:
924 		vsi->rss_table_size = ICE_LUT_VSI_SIZE;
925 		vsi->rss_size = min_t(u16, num_online_cpus(), max_rss_size);
926 		vsi->rss_lut_type = ICE_LUT_VSI;
927 		break;
928 	case ICE_VSI_VF:
929 		/* VF VSI will get a small RSS table.
930 		 * For VSI_LUT, LUT size should be set to 64 bytes.
931 		 */
932 		vsi->rss_table_size = ICE_LUT_VSI_SIZE;
933 		vsi->rss_size = ICE_MAX_RSS_QS_PER_VF;
934 		vsi->rss_lut_type = ICE_LUT_VSI;
935 		break;
936 	case ICE_VSI_LB:
937 		break;
938 	default:
939 		dev_dbg(ice_pf_to_dev(pf), "Unsupported VSI type %s\n",
940 			ice_vsi_type_str(vsi->type));
941 		break;
942 	}
943 }
944 
945 /**
946  * ice_set_dflt_vsi_ctx - Set default VSI context before adding a VSI
947  * @hw: HW structure used to determine the VLAN mode of the device
948  * @ctxt: the VSI context being set
949  *
950  * This initializes a default VSI context for all sections except the Queues.
951  */
ice_set_dflt_vsi_ctx(struct ice_hw * hw,struct ice_vsi_ctx * ctxt)952 static void ice_set_dflt_vsi_ctx(struct ice_hw *hw, struct ice_vsi_ctx *ctxt)
953 {
954 	u32 table = 0;
955 
956 	memset(&ctxt->info, 0, sizeof(ctxt->info));
957 	/* VSI's should be allocated from shared pool */
958 	ctxt->alloc_from_pool = true;
959 	/* Src pruning enabled by default */
960 	ctxt->info.sw_flags = ICE_AQ_VSI_SW_FLAG_SRC_PRUNE;
961 	/* Traffic from VSI can be sent to LAN */
962 	ctxt->info.sw_flags2 = ICE_AQ_VSI_SW_FLAG_LAN_ENA;
963 	/* allow all untagged/tagged packets by default on Tx */
964 	ctxt->info.inner_vlan_flags = ((ICE_AQ_VSI_INNER_VLAN_TX_MODE_ALL &
965 				  ICE_AQ_VSI_INNER_VLAN_TX_MODE_M) >>
966 				 ICE_AQ_VSI_INNER_VLAN_TX_MODE_S);
967 	/* SVM - by default bits 3 and 4 in inner_vlan_flags are 0's which
968 	 * results in legacy behavior (show VLAN, DEI, and UP) in descriptor.
969 	 *
970 	 * DVM - leave inner VLAN in packet by default
971 	 */
972 	if (ice_is_dvm_ena(hw)) {
973 		ctxt->info.inner_vlan_flags |=
974 			FIELD_PREP(ICE_AQ_VSI_INNER_VLAN_EMODE_M,
975 				   ICE_AQ_VSI_INNER_VLAN_EMODE_NOTHING);
976 		ctxt->info.outer_vlan_flags =
977 			(ICE_AQ_VSI_OUTER_VLAN_TX_MODE_ALL <<
978 			 ICE_AQ_VSI_OUTER_VLAN_TX_MODE_S) &
979 			ICE_AQ_VSI_OUTER_VLAN_TX_MODE_M;
980 		ctxt->info.outer_vlan_flags |=
981 			(ICE_AQ_VSI_OUTER_TAG_VLAN_8100 <<
982 			 ICE_AQ_VSI_OUTER_TAG_TYPE_S) &
983 			ICE_AQ_VSI_OUTER_TAG_TYPE_M;
984 		ctxt->info.outer_vlan_flags |=
985 			FIELD_PREP(ICE_AQ_VSI_OUTER_VLAN_EMODE_M,
986 				   ICE_AQ_VSI_OUTER_VLAN_EMODE_NOTHING);
987 	}
988 	/* Have 1:1 UP mapping for both ingress/egress tables */
989 	table |= ICE_UP_TABLE_TRANSLATE(0, 0);
990 	table |= ICE_UP_TABLE_TRANSLATE(1, 1);
991 	table |= ICE_UP_TABLE_TRANSLATE(2, 2);
992 	table |= ICE_UP_TABLE_TRANSLATE(3, 3);
993 	table |= ICE_UP_TABLE_TRANSLATE(4, 4);
994 	table |= ICE_UP_TABLE_TRANSLATE(5, 5);
995 	table |= ICE_UP_TABLE_TRANSLATE(6, 6);
996 	table |= ICE_UP_TABLE_TRANSLATE(7, 7);
997 	ctxt->info.ingress_table = cpu_to_le32(table);
998 	ctxt->info.egress_table = cpu_to_le32(table);
999 	/* Have 1:1 UP mapping for outer to inner UP table */
1000 	ctxt->info.outer_up_table = cpu_to_le32(table);
1001 	/* No Outer tag support outer_tag_flags remains to zero */
1002 }
1003 
1004 /**
1005  * ice_vsi_setup_q_map - Setup a VSI queue map
1006  * @vsi: the VSI being configured
1007  * @ctxt: VSI context structure
1008  */
ice_vsi_setup_q_map(struct ice_vsi * vsi,struct ice_vsi_ctx * ctxt)1009 static int ice_vsi_setup_q_map(struct ice_vsi *vsi, struct ice_vsi_ctx *ctxt)
1010 {
1011 	u16 offset = 0, qmap = 0, tx_count = 0, rx_count = 0, pow = 0;
1012 	u16 num_txq_per_tc, num_rxq_per_tc;
1013 	u16 qcount_tx = vsi->alloc_txq;
1014 	u16 qcount_rx = vsi->alloc_rxq;
1015 	u8 netdev_tc = 0;
1016 	int i;
1017 
1018 	if (!vsi->tc_cfg.numtc) {
1019 		/* at least TC0 should be enabled by default */
1020 		vsi->tc_cfg.numtc = 1;
1021 		vsi->tc_cfg.ena_tc = 1;
1022 	}
1023 
1024 	num_rxq_per_tc = min_t(u16, qcount_rx / vsi->tc_cfg.numtc, ICE_MAX_RXQS_PER_TC);
1025 	if (!num_rxq_per_tc)
1026 		num_rxq_per_tc = 1;
1027 	num_txq_per_tc = qcount_tx / vsi->tc_cfg.numtc;
1028 	if (!num_txq_per_tc)
1029 		num_txq_per_tc = 1;
1030 
1031 	/* find the (rounded up) power-of-2 of qcount */
1032 	pow = (u16)order_base_2(num_rxq_per_tc);
1033 
1034 	/* TC mapping is a function of the number of Rx queues assigned to the
1035 	 * VSI for each traffic class and the offset of these queues.
1036 	 * The first 10 bits are for queue offset for TC0, next 4 bits for no:of
1037 	 * queues allocated to TC0. No:of queues is a power-of-2.
1038 	 *
1039 	 * If TC is not enabled, the queue offset is set to 0, and allocate one
1040 	 * queue, this way, traffic for the given TC will be sent to the default
1041 	 * queue.
1042 	 *
1043 	 * Setup number and offset of Rx queues for all TCs for the VSI
1044 	 */
1045 	ice_for_each_traffic_class(i) {
1046 		if (!(vsi->tc_cfg.ena_tc & BIT(i))) {
1047 			/* TC is not enabled */
1048 			vsi->tc_cfg.tc_info[i].qoffset = 0;
1049 			vsi->tc_cfg.tc_info[i].qcount_rx = 1;
1050 			vsi->tc_cfg.tc_info[i].qcount_tx = 1;
1051 			vsi->tc_cfg.tc_info[i].netdev_tc = 0;
1052 			ctxt->info.tc_mapping[i] = 0;
1053 			continue;
1054 		}
1055 
1056 		/* TC is enabled */
1057 		vsi->tc_cfg.tc_info[i].qoffset = offset;
1058 		vsi->tc_cfg.tc_info[i].qcount_rx = num_rxq_per_tc;
1059 		vsi->tc_cfg.tc_info[i].qcount_tx = num_txq_per_tc;
1060 		vsi->tc_cfg.tc_info[i].netdev_tc = netdev_tc++;
1061 
1062 		qmap = ((offset << ICE_AQ_VSI_TC_Q_OFFSET_S) &
1063 			ICE_AQ_VSI_TC_Q_OFFSET_M) |
1064 			((pow << ICE_AQ_VSI_TC_Q_NUM_S) &
1065 			 ICE_AQ_VSI_TC_Q_NUM_M);
1066 		offset += num_rxq_per_tc;
1067 		tx_count += num_txq_per_tc;
1068 		ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1069 	}
1070 
1071 	/* if offset is non-zero, means it is calculated correctly based on
1072 	 * enabled TCs for a given VSI otherwise qcount_rx will always
1073 	 * be correct and non-zero because it is based off - VSI's
1074 	 * allocated Rx queues which is at least 1 (hence qcount_tx will be
1075 	 * at least 1)
1076 	 */
1077 	if (offset)
1078 		rx_count = offset;
1079 	else
1080 		rx_count = num_rxq_per_tc;
1081 
1082 	if (rx_count > vsi->alloc_rxq) {
1083 		dev_err(ice_pf_to_dev(vsi->back), "Trying to use more Rx queues (%u), than were allocated (%u)!\n",
1084 			rx_count, vsi->alloc_rxq);
1085 		return -EINVAL;
1086 	}
1087 
1088 	if (tx_count > vsi->alloc_txq) {
1089 		dev_err(ice_pf_to_dev(vsi->back), "Trying to use more Tx queues (%u), than were allocated (%u)!\n",
1090 			tx_count, vsi->alloc_txq);
1091 		return -EINVAL;
1092 	}
1093 
1094 	vsi->num_txq = tx_count;
1095 	vsi->num_rxq = rx_count;
1096 
1097 	if (vsi->type == ICE_VSI_VF && vsi->num_txq != vsi->num_rxq) {
1098 		dev_dbg(ice_pf_to_dev(vsi->back), "VF VSI should have same number of Tx and Rx queues. Hence making them equal\n");
1099 		/* since there is a chance that num_rxq could have been changed
1100 		 * in the above for loop, make num_txq equal to num_rxq.
1101 		 */
1102 		vsi->num_txq = vsi->num_rxq;
1103 	}
1104 
1105 	/* Rx queue mapping */
1106 	ctxt->info.mapping_flags |= cpu_to_le16(ICE_AQ_VSI_Q_MAP_CONTIG);
1107 	/* q_mapping buffer holds the info for the first queue allocated for
1108 	 * this VSI in the PF space and also the number of queues associated
1109 	 * with this VSI.
1110 	 */
1111 	ctxt->info.q_mapping[0] = cpu_to_le16(vsi->rxq_map[0]);
1112 	ctxt->info.q_mapping[1] = cpu_to_le16(vsi->num_rxq);
1113 
1114 	return 0;
1115 }
1116 
1117 /**
1118  * ice_set_fd_vsi_ctx - Set FD VSI context before adding a VSI
1119  * @ctxt: the VSI context being set
1120  * @vsi: the VSI being configured
1121  */
ice_set_fd_vsi_ctx(struct ice_vsi_ctx * ctxt,struct ice_vsi * vsi)1122 static void ice_set_fd_vsi_ctx(struct ice_vsi_ctx *ctxt, struct ice_vsi *vsi)
1123 {
1124 	u8 dflt_q_group, dflt_q_prio;
1125 	u16 dflt_q, report_q, val;
1126 
1127 	if (vsi->type != ICE_VSI_PF && vsi->type != ICE_VSI_CTRL &&
1128 	    vsi->type != ICE_VSI_VF && vsi->type != ICE_VSI_CHNL)
1129 		return;
1130 
1131 	val = ICE_AQ_VSI_PROP_FLOW_DIR_VALID;
1132 	ctxt->info.valid_sections |= cpu_to_le16(val);
1133 	dflt_q = 0;
1134 	dflt_q_group = 0;
1135 	report_q = 0;
1136 	dflt_q_prio = 0;
1137 
1138 	/* enable flow director filtering/programming */
1139 	val = ICE_AQ_VSI_FD_ENABLE | ICE_AQ_VSI_FD_PROG_ENABLE;
1140 	ctxt->info.fd_options = cpu_to_le16(val);
1141 	/* max of allocated flow director filters */
1142 	ctxt->info.max_fd_fltr_dedicated =
1143 			cpu_to_le16(vsi->num_gfltr);
1144 	/* max of shared flow director filters any VSI may program */
1145 	ctxt->info.max_fd_fltr_shared =
1146 			cpu_to_le16(vsi->num_bfltr);
1147 	/* default queue index within the VSI of the default FD */
1148 	val = ((dflt_q << ICE_AQ_VSI_FD_DEF_Q_S) &
1149 	       ICE_AQ_VSI_FD_DEF_Q_M);
1150 	/* target queue or queue group to the FD filter */
1151 	val |= ((dflt_q_group << ICE_AQ_VSI_FD_DEF_GRP_S) &
1152 		ICE_AQ_VSI_FD_DEF_GRP_M);
1153 	ctxt->info.fd_def_q = cpu_to_le16(val);
1154 	/* queue index on which FD filter completion is reported */
1155 	val = ((report_q << ICE_AQ_VSI_FD_REPORT_Q_S) &
1156 	       ICE_AQ_VSI_FD_REPORT_Q_M);
1157 	/* priority of the default qindex action */
1158 	val |= ((dflt_q_prio << ICE_AQ_VSI_FD_DEF_PRIORITY_S) &
1159 		ICE_AQ_VSI_FD_DEF_PRIORITY_M);
1160 	ctxt->info.fd_report_opt = cpu_to_le16(val);
1161 }
1162 
1163 /**
1164  * ice_set_rss_vsi_ctx - Set RSS VSI context before adding a VSI
1165  * @ctxt: the VSI context being set
1166  * @vsi: the VSI being configured
1167  */
ice_set_rss_vsi_ctx(struct ice_vsi_ctx * ctxt,struct ice_vsi * vsi)1168 static void ice_set_rss_vsi_ctx(struct ice_vsi_ctx *ctxt, struct ice_vsi *vsi)
1169 {
1170 	u8 lut_type, hash_type;
1171 	struct device *dev;
1172 	struct ice_pf *pf;
1173 
1174 	pf = vsi->back;
1175 	dev = ice_pf_to_dev(pf);
1176 
1177 	switch (vsi->type) {
1178 	case ICE_VSI_CHNL:
1179 	case ICE_VSI_PF:
1180 		/* PF VSI will inherit RSS instance of PF */
1181 		lut_type = ICE_AQ_VSI_Q_OPT_RSS_LUT_PF;
1182 		hash_type = ICE_AQ_VSI_Q_OPT_RSS_HASH_TPLZ;
1183 		break;
1184 	case ICE_VSI_VF:
1185 		/* VF VSI will gets a small RSS table which is a VSI LUT type */
1186 		lut_type = ICE_AQ_VSI_Q_OPT_RSS_LUT_VSI;
1187 		hash_type = ICE_AQ_VSI_Q_OPT_RSS_HASH_TPLZ;
1188 		break;
1189 	default:
1190 		dev_dbg(dev, "Unsupported VSI type %s\n",
1191 			ice_vsi_type_str(vsi->type));
1192 		return;
1193 	}
1194 
1195 	ctxt->info.q_opt_rss = ((lut_type << ICE_AQ_VSI_Q_OPT_RSS_LUT_S) &
1196 				ICE_AQ_VSI_Q_OPT_RSS_LUT_M) |
1197 				(hash_type & ICE_AQ_VSI_Q_OPT_RSS_HASH_M);
1198 }
1199 
1200 static void
ice_chnl_vsi_setup_q_map(struct ice_vsi * vsi,struct ice_vsi_ctx * ctxt)1201 ice_chnl_vsi_setup_q_map(struct ice_vsi *vsi, struct ice_vsi_ctx *ctxt)
1202 {
1203 	struct ice_pf *pf = vsi->back;
1204 	u16 qcount, qmap;
1205 	u8 offset = 0;
1206 	int pow;
1207 
1208 	qcount = min_t(int, vsi->num_rxq, pf->num_lan_msix);
1209 
1210 	pow = order_base_2(qcount);
1211 	qmap = ((offset << ICE_AQ_VSI_TC_Q_OFFSET_S) &
1212 		 ICE_AQ_VSI_TC_Q_OFFSET_M) |
1213 		 ((pow << ICE_AQ_VSI_TC_Q_NUM_S) &
1214 		   ICE_AQ_VSI_TC_Q_NUM_M);
1215 
1216 	ctxt->info.tc_mapping[0] = cpu_to_le16(qmap);
1217 	ctxt->info.mapping_flags |= cpu_to_le16(ICE_AQ_VSI_Q_MAP_CONTIG);
1218 	ctxt->info.q_mapping[0] = cpu_to_le16(vsi->next_base_q);
1219 	ctxt->info.q_mapping[1] = cpu_to_le16(qcount);
1220 }
1221 
1222 /**
1223  * ice_vsi_is_vlan_pruning_ena - check if VLAN pruning is enabled or not
1224  * @vsi: VSI to check whether or not VLAN pruning is enabled.
1225  *
1226  * returns true if Rx VLAN pruning is enabled and false otherwise.
1227  */
ice_vsi_is_vlan_pruning_ena(struct ice_vsi * vsi)1228 static bool ice_vsi_is_vlan_pruning_ena(struct ice_vsi *vsi)
1229 {
1230 	return vsi->info.sw_flags2 & ICE_AQ_VSI_SW_FLAG_RX_VLAN_PRUNE_ENA;
1231 }
1232 
1233 /**
1234  * ice_vsi_init - Create and initialize a VSI
1235  * @vsi: the VSI being configured
1236  * @vsi_flags: VSI configuration flags
1237  *
1238  * Set ICE_FLAG_VSI_INIT to initialize a new VSI context, clear it to
1239  * reconfigure an existing context.
1240  *
1241  * This initializes a VSI context depending on the VSI type to be added and
1242  * passes it down to the add_vsi aq command to create a new VSI.
1243  */
ice_vsi_init(struct ice_vsi * vsi,u32 vsi_flags)1244 static int ice_vsi_init(struct ice_vsi *vsi, u32 vsi_flags)
1245 {
1246 	struct ice_pf *pf = vsi->back;
1247 	struct ice_hw *hw = &pf->hw;
1248 	struct ice_vsi_ctx *ctxt;
1249 	struct device *dev;
1250 	int ret = 0;
1251 
1252 	dev = ice_pf_to_dev(pf);
1253 	ctxt = kzalloc(sizeof(*ctxt), GFP_KERNEL);
1254 	if (!ctxt)
1255 		return -ENOMEM;
1256 
1257 	switch (vsi->type) {
1258 	case ICE_VSI_CTRL:
1259 	case ICE_VSI_LB:
1260 	case ICE_VSI_PF:
1261 		ctxt->flags = ICE_AQ_VSI_TYPE_PF;
1262 		break;
1263 	case ICE_VSI_SWITCHDEV_CTRL:
1264 	case ICE_VSI_CHNL:
1265 		ctxt->flags = ICE_AQ_VSI_TYPE_VMDQ2;
1266 		break;
1267 	case ICE_VSI_VF:
1268 		ctxt->flags = ICE_AQ_VSI_TYPE_VF;
1269 		/* VF number here is the absolute VF number (0-255) */
1270 		ctxt->vf_num = vsi->vf->vf_id + hw->func_caps.vf_base_id;
1271 		break;
1272 	default:
1273 		ret = -ENODEV;
1274 		goto out;
1275 	}
1276 
1277 	/* Handle VLAN pruning for channel VSI if main VSI has VLAN
1278 	 * prune enabled
1279 	 */
1280 	if (vsi->type == ICE_VSI_CHNL) {
1281 		struct ice_vsi *main_vsi;
1282 
1283 		main_vsi = ice_get_main_vsi(pf);
1284 		if (main_vsi && ice_vsi_is_vlan_pruning_ena(main_vsi))
1285 			ctxt->info.sw_flags2 |=
1286 				ICE_AQ_VSI_SW_FLAG_RX_VLAN_PRUNE_ENA;
1287 		else
1288 			ctxt->info.sw_flags2 &=
1289 				~ICE_AQ_VSI_SW_FLAG_RX_VLAN_PRUNE_ENA;
1290 	}
1291 
1292 	ice_set_dflt_vsi_ctx(hw, ctxt);
1293 	if (test_bit(ICE_FLAG_FD_ENA, pf->flags))
1294 		ice_set_fd_vsi_ctx(ctxt, vsi);
1295 	/* if the switch is in VEB mode, allow VSI loopback */
1296 	if (vsi->vsw->bridge_mode == BRIDGE_MODE_VEB)
1297 		ctxt->info.sw_flags |= ICE_AQ_VSI_SW_FLAG_ALLOW_LB;
1298 
1299 	/* Set LUT type and HASH type if RSS is enabled */
1300 	if (test_bit(ICE_FLAG_RSS_ENA, pf->flags) &&
1301 	    vsi->type != ICE_VSI_CTRL) {
1302 		ice_set_rss_vsi_ctx(ctxt, vsi);
1303 		/* if updating VSI context, make sure to set valid_section:
1304 		 * to indicate which section of VSI context being updated
1305 		 */
1306 		if (!(vsi_flags & ICE_VSI_FLAG_INIT))
1307 			ctxt->info.valid_sections |=
1308 				cpu_to_le16(ICE_AQ_VSI_PROP_Q_OPT_VALID);
1309 	}
1310 
1311 	ctxt->info.sw_id = vsi->port_info->sw_id;
1312 	if (vsi->type == ICE_VSI_CHNL) {
1313 		ice_chnl_vsi_setup_q_map(vsi, ctxt);
1314 	} else {
1315 		ret = ice_vsi_setup_q_map(vsi, ctxt);
1316 		if (ret)
1317 			goto out;
1318 
1319 		if (!(vsi_flags & ICE_VSI_FLAG_INIT))
1320 			/* means VSI being updated */
1321 			/* must to indicate which section of VSI context are
1322 			 * being modified
1323 			 */
1324 			ctxt->info.valid_sections |=
1325 				cpu_to_le16(ICE_AQ_VSI_PROP_RXQ_MAP_VALID);
1326 	}
1327 
1328 	/* Allow control frames out of main VSI */
1329 	if (vsi->type == ICE_VSI_PF) {
1330 		ctxt->info.sec_flags |= ICE_AQ_VSI_SEC_FLAG_ALLOW_DEST_OVRD;
1331 		ctxt->info.valid_sections |=
1332 			cpu_to_le16(ICE_AQ_VSI_PROP_SECURITY_VALID);
1333 	}
1334 
1335 	if (vsi_flags & ICE_VSI_FLAG_INIT) {
1336 		ret = ice_add_vsi(hw, vsi->idx, ctxt, NULL);
1337 		if (ret) {
1338 			dev_err(dev, "Add VSI failed, err %d\n", ret);
1339 			ret = -EIO;
1340 			goto out;
1341 		}
1342 	} else {
1343 		ret = ice_update_vsi(hw, vsi->idx, ctxt, NULL);
1344 		if (ret) {
1345 			dev_err(dev, "Update VSI failed, err %d\n", ret);
1346 			ret = -EIO;
1347 			goto out;
1348 		}
1349 	}
1350 
1351 	/* keep context for update VSI operations */
1352 	vsi->info = ctxt->info;
1353 
1354 	/* record VSI number returned */
1355 	vsi->vsi_num = ctxt->vsi_num;
1356 
1357 out:
1358 	kfree(ctxt);
1359 	return ret;
1360 }
1361 
1362 /**
1363  * ice_vsi_clear_rings - Deallocates the Tx and Rx rings for VSI
1364  * @vsi: the VSI having rings deallocated
1365  */
ice_vsi_clear_rings(struct ice_vsi * vsi)1366 static void ice_vsi_clear_rings(struct ice_vsi *vsi)
1367 {
1368 	int i;
1369 
1370 	/* Avoid stale references by clearing map from vector to ring */
1371 	if (vsi->q_vectors) {
1372 		ice_for_each_q_vector(vsi, i) {
1373 			struct ice_q_vector *q_vector = vsi->q_vectors[i];
1374 
1375 			if (q_vector) {
1376 				q_vector->tx.tx_ring = NULL;
1377 				q_vector->rx.rx_ring = NULL;
1378 			}
1379 		}
1380 	}
1381 
1382 	if (vsi->tx_rings) {
1383 		ice_for_each_alloc_txq(vsi, i) {
1384 			if (vsi->tx_rings[i]) {
1385 				kfree_rcu(vsi->tx_rings[i], rcu);
1386 				WRITE_ONCE(vsi->tx_rings[i], NULL);
1387 			}
1388 		}
1389 	}
1390 	if (vsi->rx_rings) {
1391 		ice_for_each_alloc_rxq(vsi, i) {
1392 			if (vsi->rx_rings[i]) {
1393 				kfree_rcu(vsi->rx_rings[i], rcu);
1394 				WRITE_ONCE(vsi->rx_rings[i], NULL);
1395 			}
1396 		}
1397 	}
1398 }
1399 
1400 /**
1401  * ice_vsi_alloc_rings - Allocates Tx and Rx rings for the VSI
1402  * @vsi: VSI which is having rings allocated
1403  */
ice_vsi_alloc_rings(struct ice_vsi * vsi)1404 static int ice_vsi_alloc_rings(struct ice_vsi *vsi)
1405 {
1406 	bool dvm_ena = ice_is_dvm_ena(&vsi->back->hw);
1407 	struct ice_pf *pf = vsi->back;
1408 	struct device *dev;
1409 	u16 i;
1410 
1411 	dev = ice_pf_to_dev(pf);
1412 	/* Allocate Tx rings */
1413 	ice_for_each_alloc_txq(vsi, i) {
1414 		struct ice_tx_ring *ring;
1415 
1416 		/* allocate with kzalloc(), free with kfree_rcu() */
1417 		ring = kzalloc(sizeof(*ring), GFP_KERNEL);
1418 
1419 		if (!ring)
1420 			goto err_out;
1421 
1422 		ring->q_index = i;
1423 		ring->reg_idx = vsi->txq_map[i];
1424 		ring->vsi = vsi;
1425 		ring->tx_tstamps = &pf->ptp.port.tx;
1426 		ring->dev = dev;
1427 		ring->count = vsi->num_tx_desc;
1428 		ring->txq_teid = ICE_INVAL_TEID;
1429 		if (dvm_ena)
1430 			ring->flags |= ICE_TX_FLAGS_RING_VLAN_L2TAG2;
1431 		else
1432 			ring->flags |= ICE_TX_FLAGS_RING_VLAN_L2TAG1;
1433 		WRITE_ONCE(vsi->tx_rings[i], ring);
1434 	}
1435 
1436 	/* Allocate Rx rings */
1437 	ice_for_each_alloc_rxq(vsi, i) {
1438 		struct ice_rx_ring *ring;
1439 
1440 		/* allocate with kzalloc(), free with kfree_rcu() */
1441 		ring = kzalloc(sizeof(*ring), GFP_KERNEL);
1442 		if (!ring)
1443 			goto err_out;
1444 
1445 		ring->q_index = i;
1446 		ring->reg_idx = vsi->rxq_map[i];
1447 		ring->vsi = vsi;
1448 		ring->netdev = vsi->netdev;
1449 		ring->dev = dev;
1450 		ring->count = vsi->num_rx_desc;
1451 		ring->cached_phctime = pf->ptp.cached_phc_time;
1452 		WRITE_ONCE(vsi->rx_rings[i], ring);
1453 	}
1454 
1455 	return 0;
1456 
1457 err_out:
1458 	ice_vsi_clear_rings(vsi);
1459 	return -ENOMEM;
1460 }
1461 
1462 /**
1463  * ice_vsi_manage_rss_lut - disable/enable RSS
1464  * @vsi: the VSI being changed
1465  * @ena: boolean value indicating if this is an enable or disable request
1466  *
1467  * In the event of disable request for RSS, this function will zero out RSS
1468  * LUT, while in the event of enable request for RSS, it will reconfigure RSS
1469  * LUT.
1470  */
ice_vsi_manage_rss_lut(struct ice_vsi * vsi,bool ena)1471 void ice_vsi_manage_rss_lut(struct ice_vsi *vsi, bool ena)
1472 {
1473 	u8 *lut;
1474 
1475 	lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
1476 	if (!lut)
1477 		return;
1478 
1479 	if (ena) {
1480 		if (vsi->rss_lut_user)
1481 			memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
1482 		else
1483 			ice_fill_rss_lut(lut, vsi->rss_table_size,
1484 					 vsi->rss_size);
1485 	}
1486 
1487 	ice_set_rss_lut(vsi, lut, vsi->rss_table_size);
1488 	kfree(lut);
1489 }
1490 
1491 /**
1492  * ice_vsi_cfg_crc_strip - Configure CRC stripping for a VSI
1493  * @vsi: VSI to be configured
1494  * @disable: set to true to have FCS / CRC in the frame data
1495  */
ice_vsi_cfg_crc_strip(struct ice_vsi * vsi,bool disable)1496 void ice_vsi_cfg_crc_strip(struct ice_vsi *vsi, bool disable)
1497 {
1498 	int i;
1499 
1500 	ice_for_each_rxq(vsi, i)
1501 		if (disable)
1502 			vsi->rx_rings[i]->flags |= ICE_RX_FLAGS_CRC_STRIP_DIS;
1503 		else
1504 			vsi->rx_rings[i]->flags &= ~ICE_RX_FLAGS_CRC_STRIP_DIS;
1505 }
1506 
1507 /**
1508  * ice_vsi_cfg_rss_lut_key - Configure RSS params for a VSI
1509  * @vsi: VSI to be configured
1510  */
ice_vsi_cfg_rss_lut_key(struct ice_vsi * vsi)1511 int ice_vsi_cfg_rss_lut_key(struct ice_vsi *vsi)
1512 {
1513 	struct ice_pf *pf = vsi->back;
1514 	struct device *dev;
1515 	u8 *lut, *key;
1516 	int err;
1517 
1518 	dev = ice_pf_to_dev(pf);
1519 	if (vsi->type == ICE_VSI_PF && vsi->ch_rss_size &&
1520 	    (test_bit(ICE_FLAG_TC_MQPRIO, pf->flags))) {
1521 		vsi->rss_size = min_t(u16, vsi->rss_size, vsi->ch_rss_size);
1522 	} else {
1523 		vsi->rss_size = min_t(u16, vsi->rss_size, vsi->num_rxq);
1524 
1525 		/* If orig_rss_size is valid and it is less than determined
1526 		 * main VSI's rss_size, update main VSI's rss_size to be
1527 		 * orig_rss_size so that when tc-qdisc is deleted, main VSI
1528 		 * RSS table gets programmed to be correct (whatever it was
1529 		 * to begin with (prior to setup-tc for ADQ config)
1530 		 */
1531 		if (vsi->orig_rss_size && vsi->rss_size < vsi->orig_rss_size &&
1532 		    vsi->orig_rss_size <= vsi->num_rxq) {
1533 			vsi->rss_size = vsi->orig_rss_size;
1534 			/* now orig_rss_size is used, reset it to zero */
1535 			vsi->orig_rss_size = 0;
1536 		}
1537 	}
1538 
1539 	lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
1540 	if (!lut)
1541 		return -ENOMEM;
1542 
1543 	if (vsi->rss_lut_user)
1544 		memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
1545 	else
1546 		ice_fill_rss_lut(lut, vsi->rss_table_size, vsi->rss_size);
1547 
1548 	err = ice_set_rss_lut(vsi, lut, vsi->rss_table_size);
1549 	if (err) {
1550 		dev_err(dev, "set_rss_lut failed, error %d\n", err);
1551 		goto ice_vsi_cfg_rss_exit;
1552 	}
1553 
1554 	key = kzalloc(ICE_GET_SET_RSS_KEY_EXTEND_KEY_SIZE, GFP_KERNEL);
1555 	if (!key) {
1556 		err = -ENOMEM;
1557 		goto ice_vsi_cfg_rss_exit;
1558 	}
1559 
1560 	if (vsi->rss_hkey_user)
1561 		memcpy(key, vsi->rss_hkey_user, ICE_GET_SET_RSS_KEY_EXTEND_KEY_SIZE);
1562 	else
1563 		netdev_rss_key_fill((void *)key, ICE_GET_SET_RSS_KEY_EXTEND_KEY_SIZE);
1564 
1565 	err = ice_set_rss_key(vsi, key);
1566 	if (err)
1567 		dev_err(dev, "set_rss_key failed, error %d\n", err);
1568 
1569 	kfree(key);
1570 ice_vsi_cfg_rss_exit:
1571 	kfree(lut);
1572 	return err;
1573 }
1574 
1575 /**
1576  * ice_vsi_set_vf_rss_flow_fld - Sets VF VSI RSS input set for different flows
1577  * @vsi: VSI to be configured
1578  *
1579  * This function will only be called during the VF VSI setup. Upon successful
1580  * completion of package download, this function will configure default RSS
1581  * input sets for VF VSI.
1582  */
ice_vsi_set_vf_rss_flow_fld(struct ice_vsi * vsi)1583 static void ice_vsi_set_vf_rss_flow_fld(struct ice_vsi *vsi)
1584 {
1585 	struct ice_pf *pf = vsi->back;
1586 	struct device *dev;
1587 	int status;
1588 
1589 	dev = ice_pf_to_dev(pf);
1590 	if (ice_is_safe_mode(pf)) {
1591 		dev_dbg(dev, "Advanced RSS disabled. Package download failed, vsi num = %d\n",
1592 			vsi->vsi_num);
1593 		return;
1594 	}
1595 
1596 	status = ice_add_avf_rss_cfg(&pf->hw, vsi->idx, ICE_DEFAULT_RSS_HENA);
1597 	if (status)
1598 		dev_dbg(dev, "ice_add_avf_rss_cfg failed for vsi = %d, error = %d\n",
1599 			vsi->vsi_num, status);
1600 }
1601 
1602 /**
1603  * ice_vsi_set_rss_flow_fld - Sets RSS input set for different flows
1604  * @vsi: VSI to be configured
1605  *
1606  * This function will only be called after successful download package call
1607  * during initialization of PF. Since the downloaded package will erase the
1608  * RSS section, this function will configure RSS input sets for different
1609  * flow types. The last profile added has the highest priority, therefore 2
1610  * tuple profiles (i.e. IPv4 src/dst) are added before 4 tuple profiles
1611  * (i.e. IPv4 src/dst TCP src/dst port).
1612  */
ice_vsi_set_rss_flow_fld(struct ice_vsi * vsi)1613 static void ice_vsi_set_rss_flow_fld(struct ice_vsi *vsi)
1614 {
1615 	u16 vsi_handle = vsi->idx, vsi_num = vsi->vsi_num;
1616 	struct ice_pf *pf = vsi->back;
1617 	struct ice_hw *hw = &pf->hw;
1618 	struct device *dev;
1619 	int status;
1620 
1621 	dev = ice_pf_to_dev(pf);
1622 	if (ice_is_safe_mode(pf)) {
1623 		dev_dbg(dev, "Advanced RSS disabled. Package download failed, vsi num = %d\n",
1624 			vsi_num);
1625 		return;
1626 	}
1627 	/* configure RSS for IPv4 with input set IP src/dst */
1628 	status = ice_add_rss_cfg(hw, vsi_handle, ICE_FLOW_HASH_IPV4,
1629 				 ICE_FLOW_SEG_HDR_IPV4);
1630 	if (status)
1631 		dev_dbg(dev, "ice_add_rss_cfg failed for ipv4 flow, vsi = %d, error = %d\n",
1632 			vsi_num, status);
1633 
1634 	/* configure RSS for IPv6 with input set IPv6 src/dst */
1635 	status = ice_add_rss_cfg(hw, vsi_handle, ICE_FLOW_HASH_IPV6,
1636 				 ICE_FLOW_SEG_HDR_IPV6);
1637 	if (status)
1638 		dev_dbg(dev, "ice_add_rss_cfg failed for ipv6 flow, vsi = %d, error = %d\n",
1639 			vsi_num, status);
1640 
1641 	/* configure RSS for tcp4 with input set IP src/dst, TCP src/dst */
1642 	status = ice_add_rss_cfg(hw, vsi_handle, ICE_HASH_TCP_IPV4,
1643 				 ICE_FLOW_SEG_HDR_TCP | ICE_FLOW_SEG_HDR_IPV4);
1644 	if (status)
1645 		dev_dbg(dev, "ice_add_rss_cfg failed for tcp4 flow, vsi = %d, error = %d\n",
1646 			vsi_num, status);
1647 
1648 	/* configure RSS for udp4 with input set IP src/dst, UDP src/dst */
1649 	status = ice_add_rss_cfg(hw, vsi_handle, ICE_HASH_UDP_IPV4,
1650 				 ICE_FLOW_SEG_HDR_UDP | ICE_FLOW_SEG_HDR_IPV4);
1651 	if (status)
1652 		dev_dbg(dev, "ice_add_rss_cfg failed for udp4 flow, vsi = %d, error = %d\n",
1653 			vsi_num, status);
1654 
1655 	/* configure RSS for sctp4 with input set IP src/dst */
1656 	status = ice_add_rss_cfg(hw, vsi_handle, ICE_FLOW_HASH_IPV4,
1657 				 ICE_FLOW_SEG_HDR_SCTP | ICE_FLOW_SEG_HDR_IPV4);
1658 	if (status)
1659 		dev_dbg(dev, "ice_add_rss_cfg failed for sctp4 flow, vsi = %d, error = %d\n",
1660 			vsi_num, status);
1661 
1662 	/* configure RSS for tcp6 with input set IPv6 src/dst, TCP src/dst */
1663 	status = ice_add_rss_cfg(hw, vsi_handle, ICE_HASH_TCP_IPV6,
1664 				 ICE_FLOW_SEG_HDR_TCP | ICE_FLOW_SEG_HDR_IPV6);
1665 	if (status)
1666 		dev_dbg(dev, "ice_add_rss_cfg failed for tcp6 flow, vsi = %d, error = %d\n",
1667 			vsi_num, status);
1668 
1669 	/* configure RSS for udp6 with input set IPv6 src/dst, UDP src/dst */
1670 	status = ice_add_rss_cfg(hw, vsi_handle, ICE_HASH_UDP_IPV6,
1671 				 ICE_FLOW_SEG_HDR_UDP | ICE_FLOW_SEG_HDR_IPV6);
1672 	if (status)
1673 		dev_dbg(dev, "ice_add_rss_cfg failed for udp6 flow, vsi = %d, error = %d\n",
1674 			vsi_num, status);
1675 
1676 	/* configure RSS for sctp6 with input set IPv6 src/dst */
1677 	status = ice_add_rss_cfg(hw, vsi_handle, ICE_FLOW_HASH_IPV6,
1678 				 ICE_FLOW_SEG_HDR_SCTP | ICE_FLOW_SEG_HDR_IPV6);
1679 	if (status)
1680 		dev_dbg(dev, "ice_add_rss_cfg failed for sctp6 flow, vsi = %d, error = %d\n",
1681 			vsi_num, status);
1682 
1683 	status = ice_add_rss_cfg(hw, vsi_handle, ICE_FLOW_HASH_ESP_SPI,
1684 				 ICE_FLOW_SEG_HDR_ESP);
1685 	if (status)
1686 		dev_dbg(dev, "ice_add_rss_cfg failed for esp/spi flow, vsi = %d, error = %d\n",
1687 			vsi_num, status);
1688 }
1689 
1690 /**
1691  * ice_vsi_cfg_frame_size - setup max frame size and Rx buffer length
1692  * @vsi: VSI
1693  */
ice_vsi_cfg_frame_size(struct ice_vsi * vsi)1694 static void ice_vsi_cfg_frame_size(struct ice_vsi *vsi)
1695 {
1696 	if (!vsi->netdev || test_bit(ICE_FLAG_LEGACY_RX, vsi->back->flags)) {
1697 		vsi->max_frame = ICE_MAX_FRAME_LEGACY_RX;
1698 		vsi->rx_buf_len = ICE_RXBUF_1664;
1699 #if (PAGE_SIZE < 8192)
1700 	} else if (!ICE_2K_TOO_SMALL_WITH_PADDING &&
1701 		   (vsi->netdev->mtu <= ETH_DATA_LEN)) {
1702 		vsi->max_frame = ICE_RXBUF_1536 - NET_IP_ALIGN;
1703 		vsi->rx_buf_len = ICE_RXBUF_1536 - NET_IP_ALIGN;
1704 #endif
1705 	} else {
1706 		vsi->max_frame = ICE_AQ_SET_MAC_FRAME_SIZE_MAX;
1707 		vsi->rx_buf_len = ICE_RXBUF_3072;
1708 	}
1709 }
1710 
1711 /**
1712  * ice_pf_state_is_nominal - checks the PF for nominal state
1713  * @pf: pointer to PF to check
1714  *
1715  * Check the PF's state for a collection of bits that would indicate
1716  * the PF is in a state that would inhibit normal operation for
1717  * driver functionality.
1718  *
1719  * Returns true if PF is in a nominal state, false otherwise
1720  */
ice_pf_state_is_nominal(struct ice_pf * pf)1721 bool ice_pf_state_is_nominal(struct ice_pf *pf)
1722 {
1723 	DECLARE_BITMAP(check_bits, ICE_STATE_NBITS) = { 0 };
1724 
1725 	if (!pf)
1726 		return false;
1727 
1728 	bitmap_set(check_bits, 0, ICE_STATE_NOMINAL_CHECK_BITS);
1729 	if (bitmap_intersects(pf->state, check_bits, ICE_STATE_NBITS))
1730 		return false;
1731 
1732 	return true;
1733 }
1734 
1735 /**
1736  * ice_update_eth_stats - Update VSI-specific ethernet statistics counters
1737  * @vsi: the VSI to be updated
1738  */
ice_update_eth_stats(struct ice_vsi * vsi)1739 void ice_update_eth_stats(struct ice_vsi *vsi)
1740 {
1741 	struct ice_eth_stats *prev_es, *cur_es;
1742 	struct ice_hw *hw = &vsi->back->hw;
1743 	struct ice_pf *pf = vsi->back;
1744 	u16 vsi_num = vsi->vsi_num;    /* HW absolute index of a VSI */
1745 
1746 	prev_es = &vsi->eth_stats_prev;
1747 	cur_es = &vsi->eth_stats;
1748 
1749 	if (ice_is_reset_in_progress(pf->state))
1750 		vsi->stat_offsets_loaded = false;
1751 
1752 	ice_stat_update40(hw, GLV_GORCL(vsi_num), vsi->stat_offsets_loaded,
1753 			  &prev_es->rx_bytes, &cur_es->rx_bytes);
1754 
1755 	ice_stat_update40(hw, GLV_UPRCL(vsi_num), vsi->stat_offsets_loaded,
1756 			  &prev_es->rx_unicast, &cur_es->rx_unicast);
1757 
1758 	ice_stat_update40(hw, GLV_MPRCL(vsi_num), vsi->stat_offsets_loaded,
1759 			  &prev_es->rx_multicast, &cur_es->rx_multicast);
1760 
1761 	ice_stat_update40(hw, GLV_BPRCL(vsi_num), vsi->stat_offsets_loaded,
1762 			  &prev_es->rx_broadcast, &cur_es->rx_broadcast);
1763 
1764 	ice_stat_update32(hw, GLV_RDPC(vsi_num), vsi->stat_offsets_loaded,
1765 			  &prev_es->rx_discards, &cur_es->rx_discards);
1766 
1767 	ice_stat_update40(hw, GLV_GOTCL(vsi_num), vsi->stat_offsets_loaded,
1768 			  &prev_es->tx_bytes, &cur_es->tx_bytes);
1769 
1770 	ice_stat_update40(hw, GLV_UPTCL(vsi_num), vsi->stat_offsets_loaded,
1771 			  &prev_es->tx_unicast, &cur_es->tx_unicast);
1772 
1773 	ice_stat_update40(hw, GLV_MPTCL(vsi_num), vsi->stat_offsets_loaded,
1774 			  &prev_es->tx_multicast, &cur_es->tx_multicast);
1775 
1776 	ice_stat_update40(hw, GLV_BPTCL(vsi_num), vsi->stat_offsets_loaded,
1777 			  &prev_es->tx_broadcast, &cur_es->tx_broadcast);
1778 
1779 	ice_stat_update32(hw, GLV_TEPC(vsi_num), vsi->stat_offsets_loaded,
1780 			  &prev_es->tx_errors, &cur_es->tx_errors);
1781 
1782 	vsi->stat_offsets_loaded = true;
1783 }
1784 
1785 /**
1786  * ice_write_qrxflxp_cntxt - write/configure QRXFLXP_CNTXT register
1787  * @hw: HW pointer
1788  * @pf_q: index of the Rx queue in the PF's queue space
1789  * @rxdid: flexible descriptor RXDID
1790  * @prio: priority for the RXDID for this queue
1791  * @ena_ts: true to enable timestamp and false to disable timestamp
1792  */
1793 void
ice_write_qrxflxp_cntxt(struct ice_hw * hw,u16 pf_q,u32 rxdid,u32 prio,bool ena_ts)1794 ice_write_qrxflxp_cntxt(struct ice_hw *hw, u16 pf_q, u32 rxdid, u32 prio,
1795 			bool ena_ts)
1796 {
1797 	int regval = rd32(hw, QRXFLXP_CNTXT(pf_q));
1798 
1799 	/* clear any previous values */
1800 	regval &= ~(QRXFLXP_CNTXT_RXDID_IDX_M |
1801 		    QRXFLXP_CNTXT_RXDID_PRIO_M |
1802 		    QRXFLXP_CNTXT_TS_M);
1803 
1804 	regval |= (rxdid << QRXFLXP_CNTXT_RXDID_IDX_S) &
1805 		QRXFLXP_CNTXT_RXDID_IDX_M;
1806 
1807 	regval |= (prio << QRXFLXP_CNTXT_RXDID_PRIO_S) &
1808 		QRXFLXP_CNTXT_RXDID_PRIO_M;
1809 
1810 	if (ena_ts)
1811 		/* Enable TimeSync on this queue */
1812 		regval |= QRXFLXP_CNTXT_TS_M;
1813 
1814 	wr32(hw, QRXFLXP_CNTXT(pf_q), regval);
1815 }
1816 
ice_vsi_cfg_single_rxq(struct ice_vsi * vsi,u16 q_idx)1817 int ice_vsi_cfg_single_rxq(struct ice_vsi *vsi, u16 q_idx)
1818 {
1819 	if (q_idx >= vsi->num_rxq)
1820 		return -EINVAL;
1821 
1822 	return ice_vsi_cfg_rxq(vsi->rx_rings[q_idx]);
1823 }
1824 
ice_vsi_cfg_single_txq(struct ice_vsi * vsi,struct ice_tx_ring ** tx_rings,u16 q_idx)1825 int ice_vsi_cfg_single_txq(struct ice_vsi *vsi, struct ice_tx_ring **tx_rings, u16 q_idx)
1826 {
1827 	struct ice_aqc_add_tx_qgrp *qg_buf;
1828 	int err;
1829 
1830 	if (q_idx >= vsi->alloc_txq || !tx_rings || !tx_rings[q_idx])
1831 		return -EINVAL;
1832 
1833 	qg_buf = kzalloc(struct_size(qg_buf, txqs, 1), GFP_KERNEL);
1834 	if (!qg_buf)
1835 		return -ENOMEM;
1836 
1837 	qg_buf->num_txqs = 1;
1838 
1839 	err = ice_vsi_cfg_txq(vsi, tx_rings[q_idx], qg_buf);
1840 	kfree(qg_buf);
1841 	return err;
1842 }
1843 
1844 /**
1845  * ice_vsi_cfg_rxqs - Configure the VSI for Rx
1846  * @vsi: the VSI being configured
1847  *
1848  * Return 0 on success and a negative value on error
1849  * Configure the Rx VSI for operation.
1850  */
ice_vsi_cfg_rxqs(struct ice_vsi * vsi)1851 int ice_vsi_cfg_rxqs(struct ice_vsi *vsi)
1852 {
1853 	u16 i;
1854 
1855 	if (vsi->type == ICE_VSI_VF)
1856 		goto setup_rings;
1857 
1858 	ice_vsi_cfg_frame_size(vsi);
1859 setup_rings:
1860 	/* set up individual rings */
1861 	ice_for_each_rxq(vsi, i) {
1862 		int err = ice_vsi_cfg_rxq(vsi->rx_rings[i]);
1863 
1864 		if (err)
1865 			return err;
1866 	}
1867 
1868 	return 0;
1869 }
1870 
1871 /**
1872  * ice_vsi_cfg_txqs - Configure the VSI for Tx
1873  * @vsi: the VSI being configured
1874  * @rings: Tx ring array to be configured
1875  * @count: number of Tx ring array elements
1876  *
1877  * Return 0 on success and a negative value on error
1878  * Configure the Tx VSI for operation.
1879  */
1880 static int
ice_vsi_cfg_txqs(struct ice_vsi * vsi,struct ice_tx_ring ** rings,u16 count)1881 ice_vsi_cfg_txqs(struct ice_vsi *vsi, struct ice_tx_ring **rings, u16 count)
1882 {
1883 	struct ice_aqc_add_tx_qgrp *qg_buf;
1884 	u16 q_idx = 0;
1885 	int err = 0;
1886 
1887 	qg_buf = kzalloc(struct_size(qg_buf, txqs, 1), GFP_KERNEL);
1888 	if (!qg_buf)
1889 		return -ENOMEM;
1890 
1891 	qg_buf->num_txqs = 1;
1892 
1893 	for (q_idx = 0; q_idx < count; q_idx++) {
1894 		err = ice_vsi_cfg_txq(vsi, rings[q_idx], qg_buf);
1895 		if (err)
1896 			goto err_cfg_txqs;
1897 	}
1898 
1899 err_cfg_txqs:
1900 	kfree(qg_buf);
1901 	return err;
1902 }
1903 
1904 /**
1905  * ice_vsi_cfg_lan_txqs - Configure the VSI for Tx
1906  * @vsi: the VSI being configured
1907  *
1908  * Return 0 on success and a negative value on error
1909  * Configure the Tx VSI for operation.
1910  */
ice_vsi_cfg_lan_txqs(struct ice_vsi * vsi)1911 int ice_vsi_cfg_lan_txqs(struct ice_vsi *vsi)
1912 {
1913 	return ice_vsi_cfg_txqs(vsi, vsi->tx_rings, vsi->num_txq);
1914 }
1915 
1916 /**
1917  * ice_vsi_cfg_xdp_txqs - Configure Tx queues dedicated for XDP in given VSI
1918  * @vsi: the VSI being configured
1919  *
1920  * Return 0 on success and a negative value on error
1921  * Configure the Tx queues dedicated for XDP in given VSI for operation.
1922  */
ice_vsi_cfg_xdp_txqs(struct ice_vsi * vsi)1923 int ice_vsi_cfg_xdp_txqs(struct ice_vsi *vsi)
1924 {
1925 	int ret;
1926 	int i;
1927 
1928 	ret = ice_vsi_cfg_txqs(vsi, vsi->xdp_rings, vsi->num_xdp_txq);
1929 	if (ret)
1930 		return ret;
1931 
1932 	ice_for_each_rxq(vsi, i)
1933 		ice_tx_xsk_pool(vsi, i);
1934 
1935 	return 0;
1936 }
1937 
1938 /**
1939  * ice_intrl_usec_to_reg - convert interrupt rate limit to register value
1940  * @intrl: interrupt rate limit in usecs
1941  * @gran: interrupt rate limit granularity in usecs
1942  *
1943  * This function converts a decimal interrupt rate limit in usecs to the format
1944  * expected by firmware.
1945  */
ice_intrl_usec_to_reg(u8 intrl,u8 gran)1946 static u32 ice_intrl_usec_to_reg(u8 intrl, u8 gran)
1947 {
1948 	u32 val = intrl / gran;
1949 
1950 	if (val)
1951 		return val | GLINT_RATE_INTRL_ENA_M;
1952 	return 0;
1953 }
1954 
1955 /**
1956  * ice_write_intrl - write throttle rate limit to interrupt specific register
1957  * @q_vector: pointer to interrupt specific structure
1958  * @intrl: throttle rate limit in microseconds to write
1959  */
ice_write_intrl(struct ice_q_vector * q_vector,u8 intrl)1960 void ice_write_intrl(struct ice_q_vector *q_vector, u8 intrl)
1961 {
1962 	struct ice_hw *hw = &q_vector->vsi->back->hw;
1963 
1964 	wr32(hw, GLINT_RATE(q_vector->reg_idx),
1965 	     ice_intrl_usec_to_reg(intrl, ICE_INTRL_GRAN_ABOVE_25));
1966 }
1967 
ice_pull_qvec_from_rc(struct ice_ring_container * rc)1968 static struct ice_q_vector *ice_pull_qvec_from_rc(struct ice_ring_container *rc)
1969 {
1970 	switch (rc->type) {
1971 	case ICE_RX_CONTAINER:
1972 		if (rc->rx_ring)
1973 			return rc->rx_ring->q_vector;
1974 		break;
1975 	case ICE_TX_CONTAINER:
1976 		if (rc->tx_ring)
1977 			return rc->tx_ring->q_vector;
1978 		break;
1979 	default:
1980 		break;
1981 	}
1982 
1983 	return NULL;
1984 }
1985 
1986 /**
1987  * __ice_write_itr - write throttle rate to register
1988  * @q_vector: pointer to interrupt data structure
1989  * @rc: pointer to ring container
1990  * @itr: throttle rate in microseconds to write
1991  */
__ice_write_itr(struct ice_q_vector * q_vector,struct ice_ring_container * rc,u16 itr)1992 static void __ice_write_itr(struct ice_q_vector *q_vector,
1993 			    struct ice_ring_container *rc, u16 itr)
1994 {
1995 	struct ice_hw *hw = &q_vector->vsi->back->hw;
1996 
1997 	wr32(hw, GLINT_ITR(rc->itr_idx, q_vector->reg_idx),
1998 	     ITR_REG_ALIGN(itr) >> ICE_ITR_GRAN_S);
1999 }
2000 
2001 /**
2002  * ice_write_itr - write throttle rate to queue specific register
2003  * @rc: pointer to ring container
2004  * @itr: throttle rate in microseconds to write
2005  */
ice_write_itr(struct ice_ring_container * rc,u16 itr)2006 void ice_write_itr(struct ice_ring_container *rc, u16 itr)
2007 {
2008 	struct ice_q_vector *q_vector;
2009 
2010 	q_vector = ice_pull_qvec_from_rc(rc);
2011 	if (!q_vector)
2012 		return;
2013 
2014 	__ice_write_itr(q_vector, rc, itr);
2015 }
2016 
2017 /**
2018  * ice_set_q_vector_intrl - set up interrupt rate limiting
2019  * @q_vector: the vector to be configured
2020  *
2021  * Interrupt rate limiting is local to the vector, not per-queue so we must
2022  * detect if either ring container has dynamic moderation enabled to decide
2023  * what to set the interrupt rate limit to via INTRL settings. In the case that
2024  * dynamic moderation is disabled on both, write the value with the cached
2025  * setting to make sure INTRL register matches the user visible value.
2026  */
ice_set_q_vector_intrl(struct ice_q_vector * q_vector)2027 void ice_set_q_vector_intrl(struct ice_q_vector *q_vector)
2028 {
2029 	if (ITR_IS_DYNAMIC(&q_vector->tx) || ITR_IS_DYNAMIC(&q_vector->rx)) {
2030 		/* in the case of dynamic enabled, cap each vector to no more
2031 		 * than (4 us) 250,000 ints/sec, which allows low latency
2032 		 * but still less than 500,000 interrupts per second, which
2033 		 * reduces CPU a bit in the case of the lowest latency
2034 		 * setting. The 4 here is a value in microseconds.
2035 		 */
2036 		ice_write_intrl(q_vector, 4);
2037 	} else {
2038 		ice_write_intrl(q_vector, q_vector->intrl);
2039 	}
2040 }
2041 
2042 /**
2043  * ice_vsi_cfg_msix - MSIX mode Interrupt Config in the HW
2044  * @vsi: the VSI being configured
2045  *
2046  * This configures MSIX mode interrupts for the PF VSI, and should not be used
2047  * for the VF VSI.
2048  */
ice_vsi_cfg_msix(struct ice_vsi * vsi)2049 void ice_vsi_cfg_msix(struct ice_vsi *vsi)
2050 {
2051 	struct ice_pf *pf = vsi->back;
2052 	struct ice_hw *hw = &pf->hw;
2053 	u16 txq = 0, rxq = 0;
2054 	int i, q;
2055 
2056 	ice_for_each_q_vector(vsi, i) {
2057 		struct ice_q_vector *q_vector = vsi->q_vectors[i];
2058 		u16 reg_idx = q_vector->reg_idx;
2059 
2060 		ice_cfg_itr(hw, q_vector);
2061 
2062 		/* Both Transmit Queue Interrupt Cause Control register
2063 		 * and Receive Queue Interrupt Cause control register
2064 		 * expects MSIX_INDX field to be the vector index
2065 		 * within the function space and not the absolute
2066 		 * vector index across PF or across device.
2067 		 * For SR-IOV VF VSIs queue vector index always starts
2068 		 * with 1 since first vector index(0) is used for OICR
2069 		 * in VF space. Since VMDq and other PF VSIs are within
2070 		 * the PF function space, use the vector index that is
2071 		 * tracked for this PF.
2072 		 */
2073 		for (q = 0; q < q_vector->num_ring_tx; q++) {
2074 			ice_cfg_txq_interrupt(vsi, txq, reg_idx,
2075 					      q_vector->tx.itr_idx);
2076 			txq++;
2077 		}
2078 
2079 		for (q = 0; q < q_vector->num_ring_rx; q++) {
2080 			ice_cfg_rxq_interrupt(vsi, rxq, reg_idx,
2081 					      q_vector->rx.itr_idx);
2082 			rxq++;
2083 		}
2084 	}
2085 }
2086 
2087 /**
2088  * ice_vsi_start_all_rx_rings - start/enable all of a VSI's Rx rings
2089  * @vsi: the VSI whose rings are to be enabled
2090  *
2091  * Returns 0 on success and a negative value on error
2092  */
ice_vsi_start_all_rx_rings(struct ice_vsi * vsi)2093 int ice_vsi_start_all_rx_rings(struct ice_vsi *vsi)
2094 {
2095 	return ice_vsi_ctrl_all_rx_rings(vsi, true);
2096 }
2097 
2098 /**
2099  * ice_vsi_stop_all_rx_rings - stop/disable all of a VSI's Rx rings
2100  * @vsi: the VSI whose rings are to be disabled
2101  *
2102  * Returns 0 on success and a negative value on error
2103  */
ice_vsi_stop_all_rx_rings(struct ice_vsi * vsi)2104 int ice_vsi_stop_all_rx_rings(struct ice_vsi *vsi)
2105 {
2106 	return ice_vsi_ctrl_all_rx_rings(vsi, false);
2107 }
2108 
2109 /**
2110  * ice_vsi_stop_tx_rings - Disable Tx rings
2111  * @vsi: the VSI being configured
2112  * @rst_src: reset source
2113  * @rel_vmvf_num: Relative ID of VF/VM
2114  * @rings: Tx ring array to be stopped
2115  * @count: number of Tx ring array elements
2116  */
2117 static int
ice_vsi_stop_tx_rings(struct ice_vsi * vsi,enum ice_disq_rst_src rst_src,u16 rel_vmvf_num,struct ice_tx_ring ** rings,u16 count)2118 ice_vsi_stop_tx_rings(struct ice_vsi *vsi, enum ice_disq_rst_src rst_src,
2119 		      u16 rel_vmvf_num, struct ice_tx_ring **rings, u16 count)
2120 {
2121 	u16 q_idx;
2122 
2123 	if (vsi->num_txq > ICE_LAN_TXQ_MAX_QDIS)
2124 		return -EINVAL;
2125 
2126 	for (q_idx = 0; q_idx < count; q_idx++) {
2127 		struct ice_txq_meta txq_meta = { };
2128 		int status;
2129 
2130 		if (!rings || !rings[q_idx])
2131 			return -EINVAL;
2132 
2133 		ice_fill_txq_meta(vsi, rings[q_idx], &txq_meta);
2134 		status = ice_vsi_stop_tx_ring(vsi, rst_src, rel_vmvf_num,
2135 					      rings[q_idx], &txq_meta);
2136 
2137 		if (status)
2138 			return status;
2139 	}
2140 
2141 	return 0;
2142 }
2143 
2144 /**
2145  * ice_vsi_stop_lan_tx_rings - Disable LAN Tx rings
2146  * @vsi: the VSI being configured
2147  * @rst_src: reset source
2148  * @rel_vmvf_num: Relative ID of VF/VM
2149  */
2150 int
ice_vsi_stop_lan_tx_rings(struct ice_vsi * vsi,enum ice_disq_rst_src rst_src,u16 rel_vmvf_num)2151 ice_vsi_stop_lan_tx_rings(struct ice_vsi *vsi, enum ice_disq_rst_src rst_src,
2152 			  u16 rel_vmvf_num)
2153 {
2154 	return ice_vsi_stop_tx_rings(vsi, rst_src, rel_vmvf_num, vsi->tx_rings, vsi->num_txq);
2155 }
2156 
2157 /**
2158  * ice_vsi_stop_xdp_tx_rings - Disable XDP Tx rings
2159  * @vsi: the VSI being configured
2160  */
ice_vsi_stop_xdp_tx_rings(struct ice_vsi * vsi)2161 int ice_vsi_stop_xdp_tx_rings(struct ice_vsi *vsi)
2162 {
2163 	return ice_vsi_stop_tx_rings(vsi, ICE_NO_RESET, 0, vsi->xdp_rings, vsi->num_xdp_txq);
2164 }
2165 
2166 /**
2167  * ice_vsi_is_rx_queue_active
2168  * @vsi: the VSI being configured
2169  *
2170  * Return true if at least one queue is active.
2171  */
ice_vsi_is_rx_queue_active(struct ice_vsi * vsi)2172 bool ice_vsi_is_rx_queue_active(struct ice_vsi *vsi)
2173 {
2174 	struct ice_pf *pf = vsi->back;
2175 	struct ice_hw *hw = &pf->hw;
2176 	int i;
2177 
2178 	ice_for_each_rxq(vsi, i) {
2179 		u32 rx_reg;
2180 		int pf_q;
2181 
2182 		pf_q = vsi->rxq_map[i];
2183 		rx_reg = rd32(hw, QRX_CTRL(pf_q));
2184 		if (rx_reg & QRX_CTRL_QENA_STAT_M)
2185 			return true;
2186 	}
2187 
2188 	return false;
2189 }
2190 
ice_vsi_set_tc_cfg(struct ice_vsi * vsi)2191 static void ice_vsi_set_tc_cfg(struct ice_vsi *vsi)
2192 {
2193 	if (!test_bit(ICE_FLAG_DCB_ENA, vsi->back->flags)) {
2194 		vsi->tc_cfg.ena_tc = ICE_DFLT_TRAFFIC_CLASS;
2195 		vsi->tc_cfg.numtc = 1;
2196 		return;
2197 	}
2198 
2199 	/* set VSI TC information based on DCB config */
2200 	ice_vsi_set_dcb_tc_cfg(vsi);
2201 }
2202 
2203 /**
2204  * ice_cfg_sw_lldp - Config switch rules for LLDP packet handling
2205  * @vsi: the VSI being configured
2206  * @tx: bool to determine Tx or Rx rule
2207  * @create: bool to determine create or remove Rule
2208  */
ice_cfg_sw_lldp(struct ice_vsi * vsi,bool tx,bool create)2209 void ice_cfg_sw_lldp(struct ice_vsi *vsi, bool tx, bool create)
2210 {
2211 	int (*eth_fltr)(struct ice_vsi *v, u16 type, u16 flag,
2212 			enum ice_sw_fwd_act_type act);
2213 	struct ice_pf *pf = vsi->back;
2214 	struct device *dev;
2215 	int status;
2216 
2217 	dev = ice_pf_to_dev(pf);
2218 	eth_fltr = create ? ice_fltr_add_eth : ice_fltr_remove_eth;
2219 
2220 	if (tx) {
2221 		status = eth_fltr(vsi, ETH_P_LLDP, ICE_FLTR_TX,
2222 				  ICE_DROP_PACKET);
2223 	} else {
2224 		if (ice_fw_supports_lldp_fltr_ctrl(&pf->hw)) {
2225 			status = ice_lldp_fltr_add_remove(&pf->hw, vsi->vsi_num,
2226 							  create);
2227 		} else {
2228 			status = eth_fltr(vsi, ETH_P_LLDP, ICE_FLTR_RX,
2229 					  ICE_FWD_TO_VSI);
2230 		}
2231 	}
2232 
2233 	if (status)
2234 		dev_dbg(dev, "Fail %s %s LLDP rule on VSI %i error: %d\n",
2235 			create ? "adding" : "removing", tx ? "TX" : "RX",
2236 			vsi->vsi_num, status);
2237 }
2238 
2239 /**
2240  * ice_set_agg_vsi - sets up scheduler aggregator node and move VSI into it
2241  * @vsi: pointer to the VSI
2242  *
2243  * This function will allocate new scheduler aggregator now if needed and will
2244  * move specified VSI into it.
2245  */
ice_set_agg_vsi(struct ice_vsi * vsi)2246 static void ice_set_agg_vsi(struct ice_vsi *vsi)
2247 {
2248 	struct device *dev = ice_pf_to_dev(vsi->back);
2249 	struct ice_agg_node *agg_node_iter = NULL;
2250 	u32 agg_id = ICE_INVALID_AGG_NODE_ID;
2251 	struct ice_agg_node *agg_node = NULL;
2252 	int node_offset, max_agg_nodes = 0;
2253 	struct ice_port_info *port_info;
2254 	struct ice_pf *pf = vsi->back;
2255 	u32 agg_node_id_start = 0;
2256 	int status;
2257 
2258 	/* create (as needed) scheduler aggregator node and move VSI into
2259 	 * corresponding aggregator node
2260 	 * - PF aggregator node to contains VSIs of type _PF and _CTRL
2261 	 * - VF aggregator nodes will contain VF VSI
2262 	 */
2263 	port_info = pf->hw.port_info;
2264 	if (!port_info)
2265 		return;
2266 
2267 	switch (vsi->type) {
2268 	case ICE_VSI_CTRL:
2269 	case ICE_VSI_CHNL:
2270 	case ICE_VSI_LB:
2271 	case ICE_VSI_PF:
2272 	case ICE_VSI_SWITCHDEV_CTRL:
2273 		max_agg_nodes = ICE_MAX_PF_AGG_NODES;
2274 		agg_node_id_start = ICE_PF_AGG_NODE_ID_START;
2275 		agg_node_iter = &pf->pf_agg_node[0];
2276 		break;
2277 	case ICE_VSI_VF:
2278 		/* user can create 'n' VFs on a given PF, but since max children
2279 		 * per aggregator node can be only 64. Following code handles
2280 		 * aggregator(s) for VF VSIs, either selects a agg_node which
2281 		 * was already created provided num_vsis < 64, otherwise
2282 		 * select next available node, which will be created
2283 		 */
2284 		max_agg_nodes = ICE_MAX_VF_AGG_NODES;
2285 		agg_node_id_start = ICE_VF_AGG_NODE_ID_START;
2286 		agg_node_iter = &pf->vf_agg_node[0];
2287 		break;
2288 	default:
2289 		/* other VSI type, handle later if needed */
2290 		dev_dbg(dev, "unexpected VSI type %s\n",
2291 			ice_vsi_type_str(vsi->type));
2292 		return;
2293 	}
2294 
2295 	/* find the appropriate aggregator node */
2296 	for (node_offset = 0; node_offset < max_agg_nodes; node_offset++) {
2297 		/* see if we can find space in previously created
2298 		 * node if num_vsis < 64, otherwise skip
2299 		 */
2300 		if (agg_node_iter->num_vsis &&
2301 		    agg_node_iter->num_vsis == ICE_MAX_VSIS_IN_AGG_NODE) {
2302 			agg_node_iter++;
2303 			continue;
2304 		}
2305 
2306 		if (agg_node_iter->valid &&
2307 		    agg_node_iter->agg_id != ICE_INVALID_AGG_NODE_ID) {
2308 			agg_id = agg_node_iter->agg_id;
2309 			agg_node = agg_node_iter;
2310 			break;
2311 		}
2312 
2313 		/* find unclaimed agg_id */
2314 		if (agg_node_iter->agg_id == ICE_INVALID_AGG_NODE_ID) {
2315 			agg_id = node_offset + agg_node_id_start;
2316 			agg_node = agg_node_iter;
2317 			break;
2318 		}
2319 		/* move to next agg_node */
2320 		agg_node_iter++;
2321 	}
2322 
2323 	if (!agg_node)
2324 		return;
2325 
2326 	/* if selected aggregator node was not created, create it */
2327 	if (!agg_node->valid) {
2328 		status = ice_cfg_agg(port_info, agg_id, ICE_AGG_TYPE_AGG,
2329 				     (u8)vsi->tc_cfg.ena_tc);
2330 		if (status) {
2331 			dev_err(dev, "unable to create aggregator node with agg_id %u\n",
2332 				agg_id);
2333 			return;
2334 		}
2335 		/* aggregator node is created, store the needed info */
2336 		agg_node->valid = true;
2337 		agg_node->agg_id = agg_id;
2338 	}
2339 
2340 	/* move VSI to corresponding aggregator node */
2341 	status = ice_move_vsi_to_agg(port_info, agg_id, vsi->idx,
2342 				     (u8)vsi->tc_cfg.ena_tc);
2343 	if (status) {
2344 		dev_err(dev, "unable to move VSI idx %u into aggregator %u node",
2345 			vsi->idx, agg_id);
2346 		return;
2347 	}
2348 
2349 	/* keep active children count for aggregator node */
2350 	agg_node->num_vsis++;
2351 
2352 	/* cache the 'agg_id' in VSI, so that after reset - VSI will be moved
2353 	 * to aggregator node
2354 	 */
2355 	vsi->agg_node = agg_node;
2356 	dev_dbg(dev, "successfully moved VSI idx %u tc_bitmap 0x%x) into aggregator node %d which has num_vsis %u\n",
2357 		vsi->idx, vsi->tc_cfg.ena_tc, vsi->agg_node->agg_id,
2358 		vsi->agg_node->num_vsis);
2359 }
2360 
ice_vsi_cfg_tc_lan(struct ice_pf * pf,struct ice_vsi * vsi)2361 static int ice_vsi_cfg_tc_lan(struct ice_pf *pf, struct ice_vsi *vsi)
2362 {
2363 	u16 max_txqs[ICE_MAX_TRAFFIC_CLASS] = { 0 };
2364 	struct device *dev = ice_pf_to_dev(pf);
2365 	int ret, i;
2366 
2367 	/* configure VSI nodes based on number of queues and TC's */
2368 	ice_for_each_traffic_class(i) {
2369 		if (!(vsi->tc_cfg.ena_tc & BIT(i)))
2370 			continue;
2371 
2372 		if (vsi->type == ICE_VSI_CHNL) {
2373 			if (!vsi->alloc_txq && vsi->num_txq)
2374 				max_txqs[i] = vsi->num_txq;
2375 			else
2376 				max_txqs[i] = pf->num_lan_tx;
2377 		} else {
2378 			max_txqs[i] = vsi->alloc_txq;
2379 		}
2380 
2381 		if (vsi->type == ICE_VSI_PF)
2382 			max_txqs[i] += vsi->num_xdp_txq;
2383 	}
2384 
2385 	dev_dbg(dev, "vsi->tc_cfg.ena_tc = %d\n", vsi->tc_cfg.ena_tc);
2386 	ret = ice_cfg_vsi_lan(vsi->port_info, vsi->idx, vsi->tc_cfg.ena_tc,
2387 			      max_txqs);
2388 	if (ret) {
2389 		dev_err(dev, "VSI %d failed lan queue config, error %d\n",
2390 			vsi->vsi_num, ret);
2391 		return ret;
2392 	}
2393 
2394 	return 0;
2395 }
2396 
2397 /**
2398  * ice_vsi_cfg_def - configure default VSI based on the type
2399  * @vsi: pointer to VSI
2400  * @params: the parameters to configure this VSI with
2401  */
2402 static int
ice_vsi_cfg_def(struct ice_vsi * vsi,struct ice_vsi_cfg_params * params)2403 ice_vsi_cfg_def(struct ice_vsi *vsi, struct ice_vsi_cfg_params *params)
2404 {
2405 	struct device *dev = ice_pf_to_dev(vsi->back);
2406 	struct ice_pf *pf = vsi->back;
2407 	int ret;
2408 
2409 	vsi->vsw = pf->first_sw;
2410 
2411 	ret = ice_vsi_alloc_def(vsi, params->ch);
2412 	if (ret)
2413 		return ret;
2414 
2415 	/* allocate memory for Tx/Rx ring stat pointers */
2416 	ret = ice_vsi_alloc_stat_arrays(vsi);
2417 	if (ret)
2418 		goto unroll_vsi_alloc;
2419 
2420 	ice_alloc_fd_res(vsi);
2421 
2422 	ret = ice_vsi_get_qs(vsi);
2423 	if (ret) {
2424 		dev_err(dev, "Failed to allocate queues. vsi->idx = %d\n",
2425 			vsi->idx);
2426 		goto unroll_vsi_alloc_stat;
2427 	}
2428 
2429 	/* set RSS capabilities */
2430 	ice_vsi_set_rss_params(vsi);
2431 
2432 	/* set TC configuration */
2433 	ice_vsi_set_tc_cfg(vsi);
2434 
2435 	/* create the VSI */
2436 	ret = ice_vsi_init(vsi, params->flags);
2437 	if (ret)
2438 		goto unroll_get_qs;
2439 
2440 	ice_vsi_init_vlan_ops(vsi);
2441 
2442 	switch (vsi->type) {
2443 	case ICE_VSI_CTRL:
2444 	case ICE_VSI_SWITCHDEV_CTRL:
2445 	case ICE_VSI_PF:
2446 		ret = ice_vsi_alloc_q_vectors(vsi);
2447 		if (ret)
2448 			goto unroll_vsi_init;
2449 
2450 		ret = ice_vsi_alloc_rings(vsi);
2451 		if (ret)
2452 			goto unroll_vector_base;
2453 
2454 		ret = ice_vsi_alloc_ring_stats(vsi);
2455 		if (ret)
2456 			goto unroll_vector_base;
2457 
2458 		ice_vsi_map_rings_to_vectors(vsi);
2459 		vsi->stat_offsets_loaded = false;
2460 
2461 		if (ice_is_xdp_ena_vsi(vsi)) {
2462 			ret = ice_vsi_determine_xdp_res(vsi);
2463 			if (ret)
2464 				goto unroll_vector_base;
2465 			ret = ice_prepare_xdp_rings(vsi, vsi->xdp_prog,
2466 						    ICE_XDP_CFG_PART);
2467 			if (ret)
2468 				goto unroll_vector_base;
2469 		}
2470 
2471 		/* ICE_VSI_CTRL does not need RSS so skip RSS processing */
2472 		if (vsi->type != ICE_VSI_CTRL)
2473 			/* Do not exit if configuring RSS had an issue, at
2474 			 * least receive traffic on first queue. Hence no
2475 			 * need to capture return value
2476 			 */
2477 			if (test_bit(ICE_FLAG_RSS_ENA, pf->flags)) {
2478 				ice_vsi_cfg_rss_lut_key(vsi);
2479 				ice_vsi_set_rss_flow_fld(vsi);
2480 			}
2481 		ice_init_arfs(vsi);
2482 		break;
2483 	case ICE_VSI_CHNL:
2484 		if (test_bit(ICE_FLAG_RSS_ENA, pf->flags)) {
2485 			ice_vsi_cfg_rss_lut_key(vsi);
2486 			ice_vsi_set_rss_flow_fld(vsi);
2487 		}
2488 		break;
2489 	case ICE_VSI_VF:
2490 		/* VF driver will take care of creating netdev for this type and
2491 		 * map queues to vectors through Virtchnl, PF driver only
2492 		 * creates a VSI and corresponding structures for bookkeeping
2493 		 * purpose
2494 		 */
2495 		ret = ice_vsi_alloc_q_vectors(vsi);
2496 		if (ret)
2497 			goto unroll_vsi_init;
2498 
2499 		ret = ice_vsi_alloc_rings(vsi);
2500 		if (ret)
2501 			goto unroll_alloc_q_vector;
2502 
2503 		ret = ice_vsi_alloc_ring_stats(vsi);
2504 		if (ret)
2505 			goto unroll_vector_base;
2506 
2507 		vsi->stat_offsets_loaded = false;
2508 
2509 		/* Do not exit if configuring RSS had an issue, at least
2510 		 * receive traffic on first queue. Hence no need to capture
2511 		 * return value
2512 		 */
2513 		if (test_bit(ICE_FLAG_RSS_ENA, pf->flags)) {
2514 			ice_vsi_cfg_rss_lut_key(vsi);
2515 			ice_vsi_set_vf_rss_flow_fld(vsi);
2516 		}
2517 		break;
2518 	case ICE_VSI_LB:
2519 		ret = ice_vsi_alloc_rings(vsi);
2520 		if (ret)
2521 			goto unroll_vsi_init;
2522 
2523 		ret = ice_vsi_alloc_ring_stats(vsi);
2524 		if (ret)
2525 			goto unroll_vector_base;
2526 
2527 		break;
2528 	default:
2529 		/* clean up the resources and exit */
2530 		ret = -EINVAL;
2531 		goto unroll_vsi_init;
2532 	}
2533 
2534 	return 0;
2535 
2536 unroll_vector_base:
2537 	/* reclaim SW interrupts back to the common pool */
2538 unroll_alloc_q_vector:
2539 	ice_vsi_free_q_vectors(vsi);
2540 unroll_vsi_init:
2541 	ice_vsi_delete_from_hw(vsi);
2542 unroll_get_qs:
2543 	ice_vsi_put_qs(vsi);
2544 unroll_vsi_alloc_stat:
2545 	ice_vsi_free_stats(vsi);
2546 unroll_vsi_alloc:
2547 	ice_vsi_free_arrays(vsi);
2548 	return ret;
2549 }
2550 
2551 /**
2552  * ice_vsi_cfg - configure a previously allocated VSI
2553  * @vsi: pointer to VSI
2554  * @params: parameters used to configure this VSI
2555  */
ice_vsi_cfg(struct ice_vsi * vsi,struct ice_vsi_cfg_params * params)2556 int ice_vsi_cfg(struct ice_vsi *vsi, struct ice_vsi_cfg_params *params)
2557 {
2558 	struct ice_pf *pf = vsi->back;
2559 	int ret;
2560 
2561 	if (WARN_ON(params->type == ICE_VSI_VF && !params->vf))
2562 		return -EINVAL;
2563 
2564 	vsi->type = params->type;
2565 	vsi->port_info = params->pi;
2566 
2567 	/* For VSIs which don't have a connected VF, this will be NULL */
2568 	vsi->vf = params->vf;
2569 
2570 	ret = ice_vsi_cfg_def(vsi, params);
2571 	if (ret)
2572 		return ret;
2573 
2574 	ret = ice_vsi_cfg_tc_lan(vsi->back, vsi);
2575 	if (ret)
2576 		ice_vsi_decfg(vsi);
2577 
2578 	if (vsi->type == ICE_VSI_CTRL) {
2579 		if (vsi->vf) {
2580 			WARN_ON(vsi->vf->ctrl_vsi_idx != ICE_NO_VSI);
2581 			vsi->vf->ctrl_vsi_idx = vsi->idx;
2582 		} else {
2583 			WARN_ON(pf->ctrl_vsi_idx != ICE_NO_VSI);
2584 			pf->ctrl_vsi_idx = vsi->idx;
2585 		}
2586 	}
2587 
2588 	return ret;
2589 }
2590 
2591 /**
2592  * ice_vsi_decfg - remove all VSI configuration
2593  * @vsi: pointer to VSI
2594  */
ice_vsi_decfg(struct ice_vsi * vsi)2595 void ice_vsi_decfg(struct ice_vsi *vsi)
2596 {
2597 	struct ice_pf *pf = vsi->back;
2598 	int err;
2599 
2600 	/* The Rx rule will only exist to remove if the LLDP FW
2601 	 * engine is currently stopped
2602 	 */
2603 	if (!ice_is_safe_mode(pf) && vsi->type == ICE_VSI_PF &&
2604 	    !test_bit(ICE_FLAG_FW_LLDP_AGENT, pf->flags))
2605 		ice_cfg_sw_lldp(vsi, false, false);
2606 
2607 	ice_rm_vsi_lan_cfg(vsi->port_info, vsi->idx);
2608 	err = ice_rm_vsi_rdma_cfg(vsi->port_info, vsi->idx);
2609 	if (err)
2610 		dev_err(ice_pf_to_dev(pf), "Failed to remove RDMA scheduler config for VSI %u, err %d\n",
2611 			vsi->vsi_num, err);
2612 
2613 	if (ice_is_xdp_ena_vsi(vsi))
2614 		/* return value check can be skipped here, it always returns
2615 		 * 0 if reset is in progress
2616 		 */
2617 		ice_destroy_xdp_rings(vsi, ICE_XDP_CFG_PART);
2618 
2619 	ice_vsi_clear_rings(vsi);
2620 	ice_vsi_free_q_vectors(vsi);
2621 	ice_vsi_put_qs(vsi);
2622 	ice_vsi_free_arrays(vsi);
2623 
2624 	/* SR-IOV determines needed MSIX resources all at once instead of per
2625 	 * VSI since when VFs are spawned we know how many VFs there are and how
2626 	 * many interrupts each VF needs. SR-IOV MSIX resources are also
2627 	 * cleared in the same manner.
2628 	 */
2629 
2630 	if (vsi->type == ICE_VSI_VF &&
2631 	    vsi->agg_node && vsi->agg_node->valid)
2632 		vsi->agg_node->num_vsis--;
2633 }
2634 
2635 /**
2636  * ice_vsi_setup - Set up a VSI by a given type
2637  * @pf: board private structure
2638  * @params: parameters to use when creating the VSI
2639  *
2640  * This allocates the sw VSI structure and its queue resources.
2641  *
2642  * Returns pointer to the successfully allocated and configured VSI sw struct on
2643  * success, NULL on failure.
2644  */
2645 struct ice_vsi *
ice_vsi_setup(struct ice_pf * pf,struct ice_vsi_cfg_params * params)2646 ice_vsi_setup(struct ice_pf *pf, struct ice_vsi_cfg_params *params)
2647 {
2648 	struct device *dev = ice_pf_to_dev(pf);
2649 	struct ice_vsi *vsi;
2650 	int ret;
2651 
2652 	/* ice_vsi_setup can only initialize a new VSI, and we must have
2653 	 * a port_info structure for it.
2654 	 */
2655 	if (WARN_ON(!(params->flags & ICE_VSI_FLAG_INIT)) ||
2656 	    WARN_ON(!params->pi))
2657 		return NULL;
2658 
2659 	vsi = ice_vsi_alloc(pf);
2660 	if (!vsi) {
2661 		dev_err(dev, "could not allocate VSI\n");
2662 		return NULL;
2663 	}
2664 
2665 	ret = ice_vsi_cfg(vsi, params);
2666 	if (ret)
2667 		goto err_vsi_cfg;
2668 
2669 	/* Add switch rule to drop all Tx Flow Control Frames, of look up
2670 	 * type ETHERTYPE from VSIs, and restrict malicious VF from sending
2671 	 * out PAUSE or PFC frames. If enabled, FW can still send FC frames.
2672 	 * The rule is added once for PF VSI in order to create appropriate
2673 	 * recipe, since VSI/VSI list is ignored with drop action...
2674 	 * Also add rules to handle LLDP Tx packets.  Tx LLDP packets need to
2675 	 * be dropped so that VFs cannot send LLDP packets to reconfig DCB
2676 	 * settings in the HW.
2677 	 */
2678 	if (!ice_is_safe_mode(pf) && vsi->type == ICE_VSI_PF) {
2679 		ice_fltr_add_eth(vsi, ETH_P_PAUSE, ICE_FLTR_TX,
2680 				 ICE_DROP_PACKET);
2681 		ice_cfg_sw_lldp(vsi, true, true);
2682 	}
2683 
2684 	if (!vsi->agg_node)
2685 		ice_set_agg_vsi(vsi);
2686 
2687 	return vsi;
2688 
2689 err_vsi_cfg:
2690 	ice_vsi_free(vsi);
2691 
2692 	return NULL;
2693 }
2694 
2695 /**
2696  * ice_vsi_release_msix - Clear the queue to Interrupt mapping in HW
2697  * @vsi: the VSI being cleaned up
2698  */
ice_vsi_release_msix(struct ice_vsi * vsi)2699 static void ice_vsi_release_msix(struct ice_vsi *vsi)
2700 {
2701 	struct ice_pf *pf = vsi->back;
2702 	struct ice_hw *hw = &pf->hw;
2703 	u32 txq = 0;
2704 	u32 rxq = 0;
2705 	int i, q;
2706 
2707 	ice_for_each_q_vector(vsi, i) {
2708 		struct ice_q_vector *q_vector = vsi->q_vectors[i];
2709 
2710 		ice_write_intrl(q_vector, 0);
2711 		for (q = 0; q < q_vector->num_ring_tx; q++) {
2712 			ice_write_itr(&q_vector->tx, 0);
2713 			wr32(hw, QINT_TQCTL(vsi->txq_map[txq]), 0);
2714 			if (ice_is_xdp_ena_vsi(vsi)) {
2715 				u32 xdp_txq = txq + vsi->num_xdp_txq;
2716 
2717 				wr32(hw, QINT_TQCTL(vsi->txq_map[xdp_txq]), 0);
2718 			}
2719 			txq++;
2720 		}
2721 
2722 		for (q = 0; q < q_vector->num_ring_rx; q++) {
2723 			ice_write_itr(&q_vector->rx, 0);
2724 			wr32(hw, QINT_RQCTL(vsi->rxq_map[rxq]), 0);
2725 			rxq++;
2726 		}
2727 	}
2728 
2729 	ice_flush(hw);
2730 }
2731 
2732 /**
2733  * ice_vsi_free_irq - Free the IRQ association with the OS
2734  * @vsi: the VSI being configured
2735  */
ice_vsi_free_irq(struct ice_vsi * vsi)2736 void ice_vsi_free_irq(struct ice_vsi *vsi)
2737 {
2738 	struct ice_pf *pf = vsi->back;
2739 	int i;
2740 
2741 	if (!vsi->q_vectors || !vsi->irqs_ready)
2742 		return;
2743 
2744 	ice_vsi_release_msix(vsi);
2745 	if (vsi->type == ICE_VSI_VF)
2746 		return;
2747 
2748 	vsi->irqs_ready = false;
2749 	ice_free_cpu_rx_rmap(vsi);
2750 
2751 	ice_for_each_q_vector(vsi, i) {
2752 		int irq_num;
2753 
2754 		irq_num = vsi->q_vectors[i]->irq.virq;
2755 
2756 		/* free only the irqs that were actually requested */
2757 		if (!vsi->q_vectors[i] ||
2758 		    !(vsi->q_vectors[i]->num_ring_tx ||
2759 		      vsi->q_vectors[i]->num_ring_rx))
2760 			continue;
2761 
2762 		/* clear the affinity notifier in the IRQ descriptor */
2763 		if (!IS_ENABLED(CONFIG_RFS_ACCEL))
2764 			irq_set_affinity_notifier(irq_num, NULL);
2765 
2766 		/* clear the affinity_mask in the IRQ descriptor */
2767 		irq_set_affinity_hint(irq_num, NULL);
2768 		synchronize_irq(irq_num);
2769 		devm_free_irq(ice_pf_to_dev(pf), irq_num, vsi->q_vectors[i]);
2770 	}
2771 }
2772 
2773 /**
2774  * ice_vsi_free_tx_rings - Free Tx resources for VSI queues
2775  * @vsi: the VSI having resources freed
2776  */
ice_vsi_free_tx_rings(struct ice_vsi * vsi)2777 void ice_vsi_free_tx_rings(struct ice_vsi *vsi)
2778 {
2779 	int i;
2780 
2781 	if (!vsi->tx_rings)
2782 		return;
2783 
2784 	ice_for_each_txq(vsi, i)
2785 		if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2786 			ice_free_tx_ring(vsi->tx_rings[i]);
2787 }
2788 
2789 /**
2790  * ice_vsi_free_rx_rings - Free Rx resources for VSI queues
2791  * @vsi: the VSI having resources freed
2792  */
ice_vsi_free_rx_rings(struct ice_vsi * vsi)2793 void ice_vsi_free_rx_rings(struct ice_vsi *vsi)
2794 {
2795 	int i;
2796 
2797 	if (!vsi->rx_rings)
2798 		return;
2799 
2800 	ice_for_each_rxq(vsi, i)
2801 		if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2802 			ice_free_rx_ring(vsi->rx_rings[i]);
2803 }
2804 
2805 /**
2806  * ice_vsi_close - Shut down a VSI
2807  * @vsi: the VSI being shut down
2808  */
ice_vsi_close(struct ice_vsi * vsi)2809 void ice_vsi_close(struct ice_vsi *vsi)
2810 {
2811 	if (!test_and_set_bit(ICE_VSI_DOWN, vsi->state))
2812 		ice_down(vsi);
2813 
2814 	ice_vsi_free_irq(vsi);
2815 	ice_vsi_free_tx_rings(vsi);
2816 	ice_vsi_free_rx_rings(vsi);
2817 }
2818 
2819 /**
2820  * ice_ena_vsi - resume a VSI
2821  * @vsi: the VSI being resume
2822  * @locked: is the rtnl_lock already held
2823  */
ice_ena_vsi(struct ice_vsi * vsi,bool locked)2824 int ice_ena_vsi(struct ice_vsi *vsi, bool locked)
2825 {
2826 	int err = 0;
2827 
2828 	if (!test_bit(ICE_VSI_NEEDS_RESTART, vsi->state))
2829 		return 0;
2830 
2831 	clear_bit(ICE_VSI_NEEDS_RESTART, vsi->state);
2832 
2833 	if (vsi->netdev && vsi->type == ICE_VSI_PF) {
2834 		if (netif_running(vsi->netdev)) {
2835 			if (!locked)
2836 				rtnl_lock();
2837 
2838 			err = ice_open_internal(vsi->netdev);
2839 
2840 			if (!locked)
2841 				rtnl_unlock();
2842 		}
2843 	} else if (vsi->type == ICE_VSI_CTRL) {
2844 		err = ice_vsi_open_ctrl(vsi);
2845 	}
2846 
2847 	return err;
2848 }
2849 
2850 /**
2851  * ice_dis_vsi - pause a VSI
2852  * @vsi: the VSI being paused
2853  * @locked: is the rtnl_lock already held
2854  */
ice_dis_vsi(struct ice_vsi * vsi,bool locked)2855 void ice_dis_vsi(struct ice_vsi *vsi, bool locked)
2856 {
2857 	if (test_bit(ICE_VSI_DOWN, vsi->state))
2858 		return;
2859 
2860 	set_bit(ICE_VSI_NEEDS_RESTART, vsi->state);
2861 
2862 	if (vsi->type == ICE_VSI_PF && vsi->netdev) {
2863 		if (netif_running(vsi->netdev)) {
2864 			if (!locked)
2865 				rtnl_lock();
2866 
2867 			ice_vsi_close(vsi);
2868 
2869 			if (!locked)
2870 				rtnl_unlock();
2871 		} else {
2872 			ice_vsi_close(vsi);
2873 		}
2874 	} else if (vsi->type == ICE_VSI_CTRL ||
2875 		   vsi->type == ICE_VSI_SWITCHDEV_CTRL) {
2876 		ice_vsi_close(vsi);
2877 	}
2878 }
2879 
2880 /**
2881  * ice_vsi_dis_irq - Mask off queue interrupt generation on the VSI
2882  * @vsi: the VSI being un-configured
2883  */
ice_vsi_dis_irq(struct ice_vsi * vsi)2884 void ice_vsi_dis_irq(struct ice_vsi *vsi)
2885 {
2886 	struct ice_pf *pf = vsi->back;
2887 	struct ice_hw *hw = &pf->hw;
2888 	u32 val;
2889 	int i;
2890 
2891 	/* disable interrupt causation from each queue */
2892 	if (vsi->tx_rings) {
2893 		ice_for_each_txq(vsi, i) {
2894 			if (vsi->tx_rings[i]) {
2895 				u16 reg;
2896 
2897 				reg = vsi->tx_rings[i]->reg_idx;
2898 				val = rd32(hw, QINT_TQCTL(reg));
2899 				val &= ~QINT_TQCTL_CAUSE_ENA_M;
2900 				wr32(hw, QINT_TQCTL(reg), val);
2901 			}
2902 		}
2903 	}
2904 
2905 	if (vsi->rx_rings) {
2906 		ice_for_each_rxq(vsi, i) {
2907 			if (vsi->rx_rings[i]) {
2908 				u16 reg;
2909 
2910 				reg = vsi->rx_rings[i]->reg_idx;
2911 				val = rd32(hw, QINT_RQCTL(reg));
2912 				val &= ~QINT_RQCTL_CAUSE_ENA_M;
2913 				wr32(hw, QINT_RQCTL(reg), val);
2914 			}
2915 		}
2916 	}
2917 
2918 	/* disable each interrupt */
2919 	ice_for_each_q_vector(vsi, i) {
2920 		if (!vsi->q_vectors[i])
2921 			continue;
2922 		wr32(hw, GLINT_DYN_CTL(vsi->q_vectors[i]->reg_idx), 0);
2923 	}
2924 
2925 	ice_flush(hw);
2926 
2927 	/* don't call synchronize_irq() for VF's from the host */
2928 	if (vsi->type == ICE_VSI_VF)
2929 		return;
2930 
2931 	ice_for_each_q_vector(vsi, i)
2932 		synchronize_irq(vsi->q_vectors[i]->irq.virq);
2933 }
2934 
2935 /**
2936  * ice_vsi_release - Delete a VSI and free its resources
2937  * @vsi: the VSI being removed
2938  *
2939  * Returns 0 on success or < 0 on error
2940  */
ice_vsi_release(struct ice_vsi * vsi)2941 int ice_vsi_release(struct ice_vsi *vsi)
2942 {
2943 	struct ice_pf *pf;
2944 
2945 	if (!vsi->back)
2946 		return -ENODEV;
2947 	pf = vsi->back;
2948 
2949 	if (test_bit(ICE_FLAG_RSS_ENA, pf->flags))
2950 		ice_rss_clean(vsi);
2951 
2952 	ice_vsi_close(vsi);
2953 	ice_vsi_decfg(vsi);
2954 
2955 	/* retain SW VSI data structure since it is needed to unregister and
2956 	 * free VSI netdev when PF is not in reset recovery pending state,\
2957 	 * for ex: during rmmod.
2958 	 */
2959 	if (!ice_is_reset_in_progress(pf->state))
2960 		ice_vsi_delete(vsi);
2961 
2962 	return 0;
2963 }
2964 
2965 /**
2966  * ice_vsi_rebuild_get_coalesce - get coalesce from all q_vectors
2967  * @vsi: VSI connected with q_vectors
2968  * @coalesce: array of struct with stored coalesce
2969  *
2970  * Returns array size.
2971  */
2972 static int
ice_vsi_rebuild_get_coalesce(struct ice_vsi * vsi,struct ice_coalesce_stored * coalesce)2973 ice_vsi_rebuild_get_coalesce(struct ice_vsi *vsi,
2974 			     struct ice_coalesce_stored *coalesce)
2975 {
2976 	int i;
2977 
2978 	ice_for_each_q_vector(vsi, i) {
2979 		struct ice_q_vector *q_vector = vsi->q_vectors[i];
2980 
2981 		coalesce[i].itr_tx = q_vector->tx.itr_settings;
2982 		coalesce[i].itr_rx = q_vector->rx.itr_settings;
2983 		coalesce[i].intrl = q_vector->intrl;
2984 
2985 		if (i < vsi->num_txq)
2986 			coalesce[i].tx_valid = true;
2987 		if (i < vsi->num_rxq)
2988 			coalesce[i].rx_valid = true;
2989 	}
2990 
2991 	return vsi->num_q_vectors;
2992 }
2993 
2994 /**
2995  * ice_vsi_rebuild_set_coalesce - set coalesce from earlier saved arrays
2996  * @vsi: VSI connected with q_vectors
2997  * @coalesce: pointer to array of struct with stored coalesce
2998  * @size: size of coalesce array
2999  *
3000  * Before this function, ice_vsi_rebuild_get_coalesce should be called to save
3001  * ITR params in arrays. If size is 0 or coalesce wasn't stored set coalesce
3002  * to default value.
3003  */
3004 static void
ice_vsi_rebuild_set_coalesce(struct ice_vsi * vsi,struct ice_coalesce_stored * coalesce,int size)3005 ice_vsi_rebuild_set_coalesce(struct ice_vsi *vsi,
3006 			     struct ice_coalesce_stored *coalesce, int size)
3007 {
3008 	struct ice_ring_container *rc;
3009 	int i;
3010 
3011 	if ((size && !coalesce) || !vsi)
3012 		return;
3013 
3014 	/* There are a couple of cases that have to be handled here:
3015 	 *   1. The case where the number of queue vectors stays the same, but
3016 	 *      the number of Tx or Rx rings changes (the first for loop)
3017 	 *   2. The case where the number of queue vectors increased (the
3018 	 *      second for loop)
3019 	 */
3020 	for (i = 0; i < size && i < vsi->num_q_vectors; i++) {
3021 		/* There are 2 cases to handle here and they are the same for
3022 		 * both Tx and Rx:
3023 		 *   if the entry was valid previously (coalesce[i].[tr]x_valid
3024 		 *   and the loop variable is less than the number of rings
3025 		 *   allocated, then write the previous values
3026 		 *
3027 		 *   if the entry was not valid previously, but the number of
3028 		 *   rings is less than are allocated (this means the number of
3029 		 *   rings increased from previously), then write out the
3030 		 *   values in the first element
3031 		 *
3032 		 *   Also, always write the ITR, even if in ITR_IS_DYNAMIC
3033 		 *   as there is no harm because the dynamic algorithm
3034 		 *   will just overwrite.
3035 		 */
3036 		if (i < vsi->alloc_rxq && coalesce[i].rx_valid) {
3037 			rc = &vsi->q_vectors[i]->rx;
3038 			rc->itr_settings = coalesce[i].itr_rx;
3039 			ice_write_itr(rc, rc->itr_setting);
3040 		} else if (i < vsi->alloc_rxq) {
3041 			rc = &vsi->q_vectors[i]->rx;
3042 			rc->itr_settings = coalesce[0].itr_rx;
3043 			ice_write_itr(rc, rc->itr_setting);
3044 		}
3045 
3046 		if (i < vsi->alloc_txq && coalesce[i].tx_valid) {
3047 			rc = &vsi->q_vectors[i]->tx;
3048 			rc->itr_settings = coalesce[i].itr_tx;
3049 			ice_write_itr(rc, rc->itr_setting);
3050 		} else if (i < vsi->alloc_txq) {
3051 			rc = &vsi->q_vectors[i]->tx;
3052 			rc->itr_settings = coalesce[0].itr_tx;
3053 			ice_write_itr(rc, rc->itr_setting);
3054 		}
3055 
3056 		vsi->q_vectors[i]->intrl = coalesce[i].intrl;
3057 		ice_set_q_vector_intrl(vsi->q_vectors[i]);
3058 	}
3059 
3060 	/* the number of queue vectors increased so write whatever is in
3061 	 * the first element
3062 	 */
3063 	for (; i < vsi->num_q_vectors; i++) {
3064 		/* transmit */
3065 		rc = &vsi->q_vectors[i]->tx;
3066 		rc->itr_settings = coalesce[0].itr_tx;
3067 		ice_write_itr(rc, rc->itr_setting);
3068 
3069 		/* receive */
3070 		rc = &vsi->q_vectors[i]->rx;
3071 		rc->itr_settings = coalesce[0].itr_rx;
3072 		ice_write_itr(rc, rc->itr_setting);
3073 
3074 		vsi->q_vectors[i]->intrl = coalesce[0].intrl;
3075 		ice_set_q_vector_intrl(vsi->q_vectors[i]);
3076 	}
3077 }
3078 
3079 /**
3080  * ice_vsi_realloc_stat_arrays - Frees unused stat structures or alloc new ones
3081  * @vsi: VSI pointer
3082  */
3083 static int
ice_vsi_realloc_stat_arrays(struct ice_vsi * vsi)3084 ice_vsi_realloc_stat_arrays(struct ice_vsi *vsi)
3085 {
3086 	u16 req_txq = vsi->req_txq ? vsi->req_txq : vsi->alloc_txq;
3087 	u16 req_rxq = vsi->req_rxq ? vsi->req_rxq : vsi->alloc_rxq;
3088 	struct ice_ring_stats **tx_ring_stats;
3089 	struct ice_ring_stats **rx_ring_stats;
3090 	struct ice_vsi_stats *vsi_stat;
3091 	struct ice_pf *pf = vsi->back;
3092 	u16 prev_txq = vsi->alloc_txq;
3093 	u16 prev_rxq = vsi->alloc_rxq;
3094 	int i;
3095 
3096 	vsi_stat = pf->vsi_stats[vsi->idx];
3097 
3098 	if (req_txq < prev_txq) {
3099 		for (i = req_txq; i < prev_txq; i++) {
3100 			if (vsi_stat->tx_ring_stats[i]) {
3101 				kfree_rcu(vsi_stat->tx_ring_stats[i], rcu);
3102 				WRITE_ONCE(vsi_stat->tx_ring_stats[i], NULL);
3103 			}
3104 		}
3105 	}
3106 
3107 	tx_ring_stats = vsi_stat->tx_ring_stats;
3108 	vsi_stat->tx_ring_stats =
3109 		krealloc_array(vsi_stat->tx_ring_stats, req_txq,
3110 			       sizeof(*vsi_stat->tx_ring_stats),
3111 			       GFP_KERNEL | __GFP_ZERO);
3112 	if (!vsi_stat->tx_ring_stats) {
3113 		vsi_stat->tx_ring_stats = tx_ring_stats;
3114 		return -ENOMEM;
3115 	}
3116 
3117 	if (req_rxq < prev_rxq) {
3118 		for (i = req_rxq; i < prev_rxq; i++) {
3119 			if (vsi_stat->rx_ring_stats[i]) {
3120 				kfree_rcu(vsi_stat->rx_ring_stats[i], rcu);
3121 				WRITE_ONCE(vsi_stat->rx_ring_stats[i], NULL);
3122 			}
3123 		}
3124 	}
3125 
3126 	rx_ring_stats = vsi_stat->rx_ring_stats;
3127 	vsi_stat->rx_ring_stats =
3128 		krealloc_array(vsi_stat->rx_ring_stats, req_rxq,
3129 			       sizeof(*vsi_stat->rx_ring_stats),
3130 			       GFP_KERNEL | __GFP_ZERO);
3131 	if (!vsi_stat->rx_ring_stats) {
3132 		vsi_stat->rx_ring_stats = rx_ring_stats;
3133 		return -ENOMEM;
3134 	}
3135 
3136 	return 0;
3137 }
3138 
3139 /**
3140  * ice_vsi_rebuild - Rebuild VSI after reset
3141  * @vsi: VSI to be rebuild
3142  * @vsi_flags: flags used for VSI rebuild flow
3143  *
3144  * Set vsi_flags to ICE_VSI_FLAG_INIT to initialize a new VSI, or
3145  * ICE_VSI_FLAG_NO_INIT to rebuild an existing VSI in hardware.
3146  *
3147  * Returns 0 on success and negative value on failure
3148  */
ice_vsi_rebuild(struct ice_vsi * vsi,u32 vsi_flags)3149 int ice_vsi_rebuild(struct ice_vsi *vsi, u32 vsi_flags)
3150 {
3151 	struct ice_vsi_cfg_params params = {};
3152 	struct ice_coalesce_stored *coalesce;
3153 	int prev_num_q_vectors;
3154 	struct ice_pf *pf;
3155 	int ret;
3156 
3157 	if (!vsi)
3158 		return -EINVAL;
3159 
3160 	params = ice_vsi_to_params(vsi);
3161 	params.flags = vsi_flags;
3162 
3163 	pf = vsi->back;
3164 	if (WARN_ON(vsi->type == ICE_VSI_VF && !vsi->vf))
3165 		return -EINVAL;
3166 
3167 	ret = ice_vsi_realloc_stat_arrays(vsi);
3168 	if (ret)
3169 		goto err_vsi_cfg;
3170 
3171 	ice_vsi_decfg(vsi);
3172 	ret = ice_vsi_cfg_def(vsi, &params);
3173 	if (ret)
3174 		goto err_vsi_cfg;
3175 
3176 	coalesce = kcalloc(vsi->num_q_vectors,
3177 			   sizeof(struct ice_coalesce_stored), GFP_KERNEL);
3178 	if (!coalesce)
3179 		return -ENOMEM;
3180 
3181 	prev_num_q_vectors = ice_vsi_rebuild_get_coalesce(vsi, coalesce);
3182 
3183 	ret = ice_vsi_cfg_tc_lan(pf, vsi);
3184 	if (ret) {
3185 		if (vsi_flags & ICE_VSI_FLAG_INIT) {
3186 			ret = -EIO;
3187 			goto err_vsi_cfg_tc_lan;
3188 		}
3189 
3190 		kfree(coalesce);
3191 		return ice_schedule_reset(pf, ICE_RESET_PFR);
3192 	}
3193 
3194 	ice_vsi_rebuild_set_coalesce(vsi, coalesce, prev_num_q_vectors);
3195 	kfree(coalesce);
3196 
3197 	return 0;
3198 
3199 err_vsi_cfg_tc_lan:
3200 	ice_vsi_decfg(vsi);
3201 	kfree(coalesce);
3202 err_vsi_cfg:
3203 	return ret;
3204 }
3205 
3206 /**
3207  * ice_is_reset_in_progress - check for a reset in progress
3208  * @state: PF state field
3209  */
ice_is_reset_in_progress(unsigned long * state)3210 bool ice_is_reset_in_progress(unsigned long *state)
3211 {
3212 	return test_bit(ICE_RESET_OICR_RECV, state) ||
3213 	       test_bit(ICE_PFR_REQ, state) ||
3214 	       test_bit(ICE_CORER_REQ, state) ||
3215 	       test_bit(ICE_GLOBR_REQ, state);
3216 }
3217 
3218 /**
3219  * ice_wait_for_reset - Wait for driver to finish reset and rebuild
3220  * @pf: pointer to the PF structure
3221  * @timeout: length of time to wait, in jiffies
3222  *
3223  * Wait (sleep) for a short time until the driver finishes cleaning up from
3224  * a device reset. The caller must be able to sleep. Use this to delay
3225  * operations that could fail while the driver is cleaning up after a device
3226  * reset.
3227  *
3228  * Returns 0 on success, -EBUSY if the reset is not finished within the
3229  * timeout, and -ERESTARTSYS if the thread was interrupted.
3230  */
ice_wait_for_reset(struct ice_pf * pf,unsigned long timeout)3231 int ice_wait_for_reset(struct ice_pf *pf, unsigned long timeout)
3232 {
3233 	long ret;
3234 
3235 	ret = wait_event_interruptible_timeout(pf->reset_wait_queue,
3236 					       !ice_is_reset_in_progress(pf->state),
3237 					       timeout);
3238 	if (ret < 0)
3239 		return ret;
3240 	else if (!ret)
3241 		return -EBUSY;
3242 	else
3243 		return 0;
3244 }
3245 
3246 /**
3247  * ice_vsi_update_q_map - update our copy of the VSI info with new queue map
3248  * @vsi: VSI being configured
3249  * @ctx: the context buffer returned from AQ VSI update command
3250  */
ice_vsi_update_q_map(struct ice_vsi * vsi,struct ice_vsi_ctx * ctx)3251 static void ice_vsi_update_q_map(struct ice_vsi *vsi, struct ice_vsi_ctx *ctx)
3252 {
3253 	vsi->info.mapping_flags = ctx->info.mapping_flags;
3254 	memcpy(&vsi->info.q_mapping, &ctx->info.q_mapping,
3255 	       sizeof(vsi->info.q_mapping));
3256 	memcpy(&vsi->info.tc_mapping, ctx->info.tc_mapping,
3257 	       sizeof(vsi->info.tc_mapping));
3258 }
3259 
3260 /**
3261  * ice_vsi_cfg_netdev_tc - Setup the netdev TC configuration
3262  * @vsi: the VSI being configured
3263  * @ena_tc: TC map to be enabled
3264  */
ice_vsi_cfg_netdev_tc(struct ice_vsi * vsi,u8 ena_tc)3265 void ice_vsi_cfg_netdev_tc(struct ice_vsi *vsi, u8 ena_tc)
3266 {
3267 	struct net_device *netdev = vsi->netdev;
3268 	struct ice_pf *pf = vsi->back;
3269 	int numtc = vsi->tc_cfg.numtc;
3270 	struct ice_dcbx_cfg *dcbcfg;
3271 	u8 netdev_tc;
3272 	int i;
3273 
3274 	if (!netdev)
3275 		return;
3276 
3277 	/* CHNL VSI doesn't have it's own netdev, hence, no netdev_tc */
3278 	if (vsi->type == ICE_VSI_CHNL)
3279 		return;
3280 
3281 	if (!ena_tc) {
3282 		netdev_reset_tc(netdev);
3283 		return;
3284 	}
3285 
3286 	if (vsi->type == ICE_VSI_PF && ice_is_adq_active(pf))
3287 		numtc = vsi->all_numtc;
3288 
3289 	if (netdev_set_num_tc(netdev, numtc))
3290 		return;
3291 
3292 	dcbcfg = &pf->hw.port_info->qos_cfg.local_dcbx_cfg;
3293 
3294 	ice_for_each_traffic_class(i)
3295 		if (vsi->tc_cfg.ena_tc & BIT(i))
3296 			netdev_set_tc_queue(netdev,
3297 					    vsi->tc_cfg.tc_info[i].netdev_tc,
3298 					    vsi->tc_cfg.tc_info[i].qcount_tx,
3299 					    vsi->tc_cfg.tc_info[i].qoffset);
3300 	/* setup TC queue map for CHNL TCs */
3301 	ice_for_each_chnl_tc(i) {
3302 		if (!(vsi->all_enatc & BIT(i)))
3303 			break;
3304 		if (!vsi->mqprio_qopt.qopt.count[i])
3305 			break;
3306 		netdev_set_tc_queue(netdev, i,
3307 				    vsi->mqprio_qopt.qopt.count[i],
3308 				    vsi->mqprio_qopt.qopt.offset[i]);
3309 	}
3310 
3311 	if (test_bit(ICE_FLAG_TC_MQPRIO, pf->flags))
3312 		return;
3313 
3314 	for (i = 0; i < ICE_MAX_USER_PRIORITY; i++) {
3315 		u8 ets_tc = dcbcfg->etscfg.prio_table[i];
3316 
3317 		/* Get the mapped netdev TC# for the UP */
3318 		netdev_tc = vsi->tc_cfg.tc_info[ets_tc].netdev_tc;
3319 		netdev_set_prio_tc_map(netdev, i, netdev_tc);
3320 	}
3321 }
3322 
3323 /**
3324  * ice_vsi_setup_q_map_mqprio - Prepares mqprio based tc_config
3325  * @vsi: the VSI being configured,
3326  * @ctxt: VSI context structure
3327  * @ena_tc: number of traffic classes to enable
3328  *
3329  * Prepares VSI tc_config to have queue configurations based on MQPRIO options.
3330  */
3331 static int
ice_vsi_setup_q_map_mqprio(struct ice_vsi * vsi,struct ice_vsi_ctx * ctxt,u8 ena_tc)3332 ice_vsi_setup_q_map_mqprio(struct ice_vsi *vsi, struct ice_vsi_ctx *ctxt,
3333 			   u8 ena_tc)
3334 {
3335 	u16 pow, offset = 0, qcount_tx = 0, qcount_rx = 0, qmap;
3336 	u16 tc0_offset = vsi->mqprio_qopt.qopt.offset[0];
3337 	int tc0_qcount = vsi->mqprio_qopt.qopt.count[0];
3338 	u16 new_txq, new_rxq;
3339 	u8 netdev_tc = 0;
3340 	int i;
3341 
3342 	vsi->tc_cfg.ena_tc = ena_tc ? ena_tc : 1;
3343 
3344 	pow = order_base_2(tc0_qcount);
3345 	qmap = ((tc0_offset << ICE_AQ_VSI_TC_Q_OFFSET_S) &
3346 		ICE_AQ_VSI_TC_Q_OFFSET_M) |
3347 		((pow << ICE_AQ_VSI_TC_Q_NUM_S) & ICE_AQ_VSI_TC_Q_NUM_M);
3348 
3349 	ice_for_each_traffic_class(i) {
3350 		if (!(vsi->tc_cfg.ena_tc & BIT(i))) {
3351 			/* TC is not enabled */
3352 			vsi->tc_cfg.tc_info[i].qoffset = 0;
3353 			vsi->tc_cfg.tc_info[i].qcount_rx = 1;
3354 			vsi->tc_cfg.tc_info[i].qcount_tx = 1;
3355 			vsi->tc_cfg.tc_info[i].netdev_tc = 0;
3356 			ctxt->info.tc_mapping[i] = 0;
3357 			continue;
3358 		}
3359 
3360 		offset = vsi->mqprio_qopt.qopt.offset[i];
3361 		qcount_rx = vsi->mqprio_qopt.qopt.count[i];
3362 		qcount_tx = vsi->mqprio_qopt.qopt.count[i];
3363 		vsi->tc_cfg.tc_info[i].qoffset = offset;
3364 		vsi->tc_cfg.tc_info[i].qcount_rx = qcount_rx;
3365 		vsi->tc_cfg.tc_info[i].qcount_tx = qcount_tx;
3366 		vsi->tc_cfg.tc_info[i].netdev_tc = netdev_tc++;
3367 	}
3368 
3369 	if (vsi->all_numtc && vsi->all_numtc != vsi->tc_cfg.numtc) {
3370 		ice_for_each_chnl_tc(i) {
3371 			if (!(vsi->all_enatc & BIT(i)))
3372 				continue;
3373 			offset = vsi->mqprio_qopt.qopt.offset[i];
3374 			qcount_rx = vsi->mqprio_qopt.qopt.count[i];
3375 			qcount_tx = vsi->mqprio_qopt.qopt.count[i];
3376 		}
3377 	}
3378 
3379 	new_txq = offset + qcount_tx;
3380 	if (new_txq > vsi->alloc_txq) {
3381 		dev_err(ice_pf_to_dev(vsi->back), "Trying to use more Tx queues (%u), than were allocated (%u)!\n",
3382 			new_txq, vsi->alloc_txq);
3383 		return -EINVAL;
3384 	}
3385 
3386 	new_rxq = offset + qcount_rx;
3387 	if (new_rxq > vsi->alloc_rxq) {
3388 		dev_err(ice_pf_to_dev(vsi->back), "Trying to use more Rx queues (%u), than were allocated (%u)!\n",
3389 			new_rxq, vsi->alloc_rxq);
3390 		return -EINVAL;
3391 	}
3392 
3393 	/* Set actual Tx/Rx queue pairs */
3394 	vsi->num_txq = new_txq;
3395 	vsi->num_rxq = new_rxq;
3396 
3397 	/* Setup queue TC[0].qmap for given VSI context */
3398 	ctxt->info.tc_mapping[0] = cpu_to_le16(qmap);
3399 	ctxt->info.q_mapping[0] = cpu_to_le16(vsi->rxq_map[0]);
3400 	ctxt->info.q_mapping[1] = cpu_to_le16(tc0_qcount);
3401 
3402 	/* Find queue count available for channel VSIs and starting offset
3403 	 * for channel VSIs
3404 	 */
3405 	if (tc0_qcount && tc0_qcount < vsi->num_rxq) {
3406 		vsi->cnt_q_avail = vsi->num_rxq - tc0_qcount;
3407 		vsi->next_base_q = tc0_qcount;
3408 	}
3409 	dev_dbg(ice_pf_to_dev(vsi->back), "vsi->num_txq = %d\n",  vsi->num_txq);
3410 	dev_dbg(ice_pf_to_dev(vsi->back), "vsi->num_rxq = %d\n",  vsi->num_rxq);
3411 	dev_dbg(ice_pf_to_dev(vsi->back), "all_numtc %u, all_enatc: 0x%04x, tc_cfg.numtc %u\n",
3412 		vsi->all_numtc, vsi->all_enatc, vsi->tc_cfg.numtc);
3413 
3414 	return 0;
3415 }
3416 
3417 /**
3418  * ice_vsi_cfg_tc - Configure VSI Tx Sched for given TC map
3419  * @vsi: VSI to be configured
3420  * @ena_tc: TC bitmap
3421  *
3422  * VSI queues expected to be quiesced before calling this function
3423  */
ice_vsi_cfg_tc(struct ice_vsi * vsi,u8 ena_tc)3424 int ice_vsi_cfg_tc(struct ice_vsi *vsi, u8 ena_tc)
3425 {
3426 	u16 max_txqs[ICE_MAX_TRAFFIC_CLASS] = { 0 };
3427 	struct ice_pf *pf = vsi->back;
3428 	struct ice_tc_cfg old_tc_cfg;
3429 	struct ice_vsi_ctx *ctx;
3430 	struct device *dev;
3431 	int i, ret = 0;
3432 	u8 num_tc = 0;
3433 
3434 	dev = ice_pf_to_dev(pf);
3435 	if (vsi->tc_cfg.ena_tc == ena_tc &&
3436 	    vsi->mqprio_qopt.mode != TC_MQPRIO_MODE_CHANNEL)
3437 		return 0;
3438 
3439 	ice_for_each_traffic_class(i) {
3440 		/* build bitmap of enabled TCs */
3441 		if (ena_tc & BIT(i))
3442 			num_tc++;
3443 		/* populate max_txqs per TC */
3444 		max_txqs[i] = vsi->alloc_txq;
3445 		/* Update max_txqs if it is CHNL VSI, because alloc_t[r]xq are
3446 		 * zero for CHNL VSI, hence use num_txq instead as max_txqs
3447 		 */
3448 		if (vsi->type == ICE_VSI_CHNL &&
3449 		    test_bit(ICE_FLAG_TC_MQPRIO, pf->flags))
3450 			max_txqs[i] = vsi->num_txq;
3451 	}
3452 
3453 	memcpy(&old_tc_cfg, &vsi->tc_cfg, sizeof(old_tc_cfg));
3454 	vsi->tc_cfg.ena_tc = ena_tc;
3455 	vsi->tc_cfg.numtc = num_tc;
3456 
3457 	ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
3458 	if (!ctx)
3459 		return -ENOMEM;
3460 
3461 	ctx->vf_num = 0;
3462 	ctx->info = vsi->info;
3463 
3464 	if (vsi->type == ICE_VSI_PF &&
3465 	    test_bit(ICE_FLAG_TC_MQPRIO, pf->flags))
3466 		ret = ice_vsi_setup_q_map_mqprio(vsi, ctx, ena_tc);
3467 	else
3468 		ret = ice_vsi_setup_q_map(vsi, ctx);
3469 
3470 	if (ret) {
3471 		memcpy(&vsi->tc_cfg, &old_tc_cfg, sizeof(vsi->tc_cfg));
3472 		goto out;
3473 	}
3474 
3475 	/* must to indicate which section of VSI context are being modified */
3476 	ctx->info.valid_sections = cpu_to_le16(ICE_AQ_VSI_PROP_RXQ_MAP_VALID);
3477 	ret = ice_update_vsi(&pf->hw, vsi->idx, ctx, NULL);
3478 	if (ret) {
3479 		dev_info(dev, "Failed VSI Update\n");
3480 		goto out;
3481 	}
3482 
3483 	if (vsi->type == ICE_VSI_PF &&
3484 	    test_bit(ICE_FLAG_TC_MQPRIO, pf->flags))
3485 		ret = ice_cfg_vsi_lan(vsi->port_info, vsi->idx, 1, max_txqs);
3486 	else
3487 		ret = ice_cfg_vsi_lan(vsi->port_info, vsi->idx,
3488 				      vsi->tc_cfg.ena_tc, max_txqs);
3489 
3490 	if (ret) {
3491 		dev_err(dev, "VSI %d failed TC config, error %d\n",
3492 			vsi->vsi_num, ret);
3493 		goto out;
3494 	}
3495 	ice_vsi_update_q_map(vsi, ctx);
3496 	vsi->info.valid_sections = 0;
3497 
3498 	ice_vsi_cfg_netdev_tc(vsi, ena_tc);
3499 out:
3500 	kfree(ctx);
3501 	return ret;
3502 }
3503 
3504 /**
3505  * ice_update_ring_stats - Update ring statistics
3506  * @stats: stats to be updated
3507  * @pkts: number of processed packets
3508  * @bytes: number of processed bytes
3509  *
3510  * This function assumes that caller has acquired a u64_stats_sync lock.
3511  */
ice_update_ring_stats(struct ice_q_stats * stats,u64 pkts,u64 bytes)3512 static void ice_update_ring_stats(struct ice_q_stats *stats, u64 pkts, u64 bytes)
3513 {
3514 	stats->bytes += bytes;
3515 	stats->pkts += pkts;
3516 }
3517 
3518 /**
3519  * ice_update_tx_ring_stats - Update Tx ring specific counters
3520  * @tx_ring: ring to update
3521  * @pkts: number of processed packets
3522  * @bytes: number of processed bytes
3523  */
ice_update_tx_ring_stats(struct ice_tx_ring * tx_ring,u64 pkts,u64 bytes)3524 void ice_update_tx_ring_stats(struct ice_tx_ring *tx_ring, u64 pkts, u64 bytes)
3525 {
3526 	u64_stats_update_begin(&tx_ring->ring_stats->syncp);
3527 	ice_update_ring_stats(&tx_ring->ring_stats->stats, pkts, bytes);
3528 	u64_stats_update_end(&tx_ring->ring_stats->syncp);
3529 }
3530 
3531 /**
3532  * ice_update_rx_ring_stats - Update Rx ring specific counters
3533  * @rx_ring: ring to update
3534  * @pkts: number of processed packets
3535  * @bytes: number of processed bytes
3536  */
ice_update_rx_ring_stats(struct ice_rx_ring * rx_ring,u64 pkts,u64 bytes)3537 void ice_update_rx_ring_stats(struct ice_rx_ring *rx_ring, u64 pkts, u64 bytes)
3538 {
3539 	u64_stats_update_begin(&rx_ring->ring_stats->syncp);
3540 	ice_update_ring_stats(&rx_ring->ring_stats->stats, pkts, bytes);
3541 	u64_stats_update_end(&rx_ring->ring_stats->syncp);
3542 }
3543 
3544 /**
3545  * ice_is_dflt_vsi_in_use - check if the default forwarding VSI is being used
3546  * @pi: port info of the switch with default VSI
3547  *
3548  * Return true if the there is a single VSI in default forwarding VSI list
3549  */
ice_is_dflt_vsi_in_use(struct ice_port_info * pi)3550 bool ice_is_dflt_vsi_in_use(struct ice_port_info *pi)
3551 {
3552 	bool exists = false;
3553 
3554 	ice_check_if_dflt_vsi(pi, 0, &exists);
3555 	return exists;
3556 }
3557 
3558 /**
3559  * ice_is_vsi_dflt_vsi - check if the VSI passed in is the default VSI
3560  * @vsi: VSI to compare against default forwarding VSI
3561  *
3562  * If this VSI passed in is the default forwarding VSI then return true, else
3563  * return false
3564  */
ice_is_vsi_dflt_vsi(struct ice_vsi * vsi)3565 bool ice_is_vsi_dflt_vsi(struct ice_vsi *vsi)
3566 {
3567 	return ice_check_if_dflt_vsi(vsi->port_info, vsi->idx, NULL);
3568 }
3569 
3570 /**
3571  * ice_set_dflt_vsi - set the default forwarding VSI
3572  * @vsi: VSI getting set as the default forwarding VSI on the switch
3573  *
3574  * If the VSI passed in is already the default VSI and it's enabled just return
3575  * success.
3576  *
3577  * Otherwise try to set the VSI passed in as the switch's default VSI and
3578  * return the result.
3579  */
ice_set_dflt_vsi(struct ice_vsi * vsi)3580 int ice_set_dflt_vsi(struct ice_vsi *vsi)
3581 {
3582 	struct device *dev;
3583 	int status;
3584 
3585 	if (!vsi)
3586 		return -EINVAL;
3587 
3588 	dev = ice_pf_to_dev(vsi->back);
3589 
3590 	if (ice_lag_is_switchdev_running(vsi->back)) {
3591 		dev_dbg(dev, "VSI %d passed is a part of LAG containing interfaces in switchdev mode, nothing to do\n",
3592 			vsi->vsi_num);
3593 		return 0;
3594 	}
3595 
3596 	/* the VSI passed in is already the default VSI */
3597 	if (ice_is_vsi_dflt_vsi(vsi)) {
3598 		dev_dbg(dev, "VSI %d passed in is already the default forwarding VSI, nothing to do\n",
3599 			vsi->vsi_num);
3600 		return 0;
3601 	}
3602 
3603 	status = ice_cfg_dflt_vsi(vsi->port_info, vsi->idx, true, ICE_FLTR_RX);
3604 	if (status) {
3605 		dev_err(dev, "Failed to set VSI %d as the default forwarding VSI, error %d\n",
3606 			vsi->vsi_num, status);
3607 		return status;
3608 	}
3609 
3610 	return 0;
3611 }
3612 
3613 /**
3614  * ice_clear_dflt_vsi - clear the default forwarding VSI
3615  * @vsi: VSI to remove from filter list
3616  *
3617  * If the switch has no default VSI or it's not enabled then return error.
3618  *
3619  * Otherwise try to clear the default VSI and return the result.
3620  */
ice_clear_dflt_vsi(struct ice_vsi * vsi)3621 int ice_clear_dflt_vsi(struct ice_vsi *vsi)
3622 {
3623 	struct device *dev;
3624 	int status;
3625 
3626 	if (!vsi)
3627 		return -EINVAL;
3628 
3629 	dev = ice_pf_to_dev(vsi->back);
3630 
3631 	/* there is no default VSI configured */
3632 	if (!ice_is_dflt_vsi_in_use(vsi->port_info))
3633 		return -ENODEV;
3634 
3635 	status = ice_cfg_dflt_vsi(vsi->port_info, vsi->idx, false,
3636 				  ICE_FLTR_RX);
3637 	if (status) {
3638 		dev_err(dev, "Failed to clear the default forwarding VSI %d, error %d\n",
3639 			vsi->vsi_num, status);
3640 		return -EIO;
3641 	}
3642 
3643 	return 0;
3644 }
3645 
3646 /**
3647  * ice_get_link_speed_mbps - get link speed in Mbps
3648  * @vsi: the VSI whose link speed is being queried
3649  *
3650  * Return current VSI link speed and 0 if the speed is unknown.
3651  */
ice_get_link_speed_mbps(struct ice_vsi * vsi)3652 int ice_get_link_speed_mbps(struct ice_vsi *vsi)
3653 {
3654 	unsigned int link_speed;
3655 
3656 	link_speed = vsi->port_info->phy.link_info.link_speed;
3657 
3658 	return (int)ice_get_link_speed(fls(link_speed) - 1);
3659 }
3660 
3661 /**
3662  * ice_get_link_speed_kbps - get link speed in Kbps
3663  * @vsi: the VSI whose link speed is being queried
3664  *
3665  * Return current VSI link speed and 0 if the speed is unknown.
3666  */
ice_get_link_speed_kbps(struct ice_vsi * vsi)3667 int ice_get_link_speed_kbps(struct ice_vsi *vsi)
3668 {
3669 	int speed_mbps;
3670 
3671 	speed_mbps = ice_get_link_speed_mbps(vsi);
3672 
3673 	return speed_mbps * 1000;
3674 }
3675 
3676 /**
3677  * ice_set_min_bw_limit - setup minimum BW limit for Tx based on min_tx_rate
3678  * @vsi: VSI to be configured
3679  * @min_tx_rate: min Tx rate in Kbps to be configured as BW limit
3680  *
3681  * If the min_tx_rate is specified as 0 that means to clear the minimum BW limit
3682  * profile, otherwise a non-zero value will force a minimum BW limit for the VSI
3683  * on TC 0.
3684  */
ice_set_min_bw_limit(struct ice_vsi * vsi,u64 min_tx_rate)3685 int ice_set_min_bw_limit(struct ice_vsi *vsi, u64 min_tx_rate)
3686 {
3687 	struct ice_pf *pf = vsi->back;
3688 	struct device *dev;
3689 	int status;
3690 	int speed;
3691 
3692 	dev = ice_pf_to_dev(pf);
3693 	if (!vsi->port_info) {
3694 		dev_dbg(dev, "VSI %d, type %u specified doesn't have valid port_info\n",
3695 			vsi->idx, vsi->type);
3696 		return -EINVAL;
3697 	}
3698 
3699 	speed = ice_get_link_speed_kbps(vsi);
3700 	if (min_tx_rate > (u64)speed) {
3701 		dev_err(dev, "invalid min Tx rate %llu Kbps specified for %s %d is greater than current link speed %u Kbps\n",
3702 			min_tx_rate, ice_vsi_type_str(vsi->type), vsi->idx,
3703 			speed);
3704 		return -EINVAL;
3705 	}
3706 
3707 	/* Configure min BW for VSI limit */
3708 	if (min_tx_rate) {
3709 		status = ice_cfg_vsi_bw_lmt_per_tc(vsi->port_info, vsi->idx, 0,
3710 						   ICE_MIN_BW, min_tx_rate);
3711 		if (status) {
3712 			dev_err(dev, "failed to set min Tx rate(%llu Kbps) for %s %d\n",
3713 				min_tx_rate, ice_vsi_type_str(vsi->type),
3714 				vsi->idx);
3715 			return status;
3716 		}
3717 
3718 		dev_dbg(dev, "set min Tx rate(%llu Kbps) for %s\n",
3719 			min_tx_rate, ice_vsi_type_str(vsi->type));
3720 	} else {
3721 		status = ice_cfg_vsi_bw_dflt_lmt_per_tc(vsi->port_info,
3722 							vsi->idx, 0,
3723 							ICE_MIN_BW);
3724 		if (status) {
3725 			dev_err(dev, "failed to clear min Tx rate configuration for %s %d\n",
3726 				ice_vsi_type_str(vsi->type), vsi->idx);
3727 			return status;
3728 		}
3729 
3730 		dev_dbg(dev, "cleared min Tx rate configuration for %s %d\n",
3731 			ice_vsi_type_str(vsi->type), vsi->idx);
3732 	}
3733 
3734 	return 0;
3735 }
3736 
3737 /**
3738  * ice_set_max_bw_limit - setup maximum BW limit for Tx based on max_tx_rate
3739  * @vsi: VSI to be configured
3740  * @max_tx_rate: max Tx rate in Kbps to be configured as BW limit
3741  *
3742  * If the max_tx_rate is specified as 0 that means to clear the maximum BW limit
3743  * profile, otherwise a non-zero value will force a maximum BW limit for the VSI
3744  * on TC 0.
3745  */
ice_set_max_bw_limit(struct ice_vsi * vsi,u64 max_tx_rate)3746 int ice_set_max_bw_limit(struct ice_vsi *vsi, u64 max_tx_rate)
3747 {
3748 	struct ice_pf *pf = vsi->back;
3749 	struct device *dev;
3750 	int status;
3751 	int speed;
3752 
3753 	dev = ice_pf_to_dev(pf);
3754 	if (!vsi->port_info) {
3755 		dev_dbg(dev, "VSI %d, type %u specified doesn't have valid port_info\n",
3756 			vsi->idx, vsi->type);
3757 		return -EINVAL;
3758 	}
3759 
3760 	speed = ice_get_link_speed_kbps(vsi);
3761 	if (max_tx_rate > (u64)speed) {
3762 		dev_err(dev, "invalid max Tx rate %llu Kbps specified for %s %d is greater than current link speed %u Kbps\n",
3763 			max_tx_rate, ice_vsi_type_str(vsi->type), vsi->idx,
3764 			speed);
3765 		return -EINVAL;
3766 	}
3767 
3768 	/* Configure max BW for VSI limit */
3769 	if (max_tx_rate) {
3770 		status = ice_cfg_vsi_bw_lmt_per_tc(vsi->port_info, vsi->idx, 0,
3771 						   ICE_MAX_BW, max_tx_rate);
3772 		if (status) {
3773 			dev_err(dev, "failed setting max Tx rate(%llu Kbps) for %s %d\n",
3774 				max_tx_rate, ice_vsi_type_str(vsi->type),
3775 				vsi->idx);
3776 			return status;
3777 		}
3778 
3779 		dev_dbg(dev, "set max Tx rate(%llu Kbps) for %s %d\n",
3780 			max_tx_rate, ice_vsi_type_str(vsi->type), vsi->idx);
3781 	} else {
3782 		status = ice_cfg_vsi_bw_dflt_lmt_per_tc(vsi->port_info,
3783 							vsi->idx, 0,
3784 							ICE_MAX_BW);
3785 		if (status) {
3786 			dev_err(dev, "failed clearing max Tx rate configuration for %s %d\n",
3787 				ice_vsi_type_str(vsi->type), vsi->idx);
3788 			return status;
3789 		}
3790 
3791 		dev_dbg(dev, "cleared max Tx rate configuration for %s %d\n",
3792 			ice_vsi_type_str(vsi->type), vsi->idx);
3793 	}
3794 
3795 	return 0;
3796 }
3797 
3798 /**
3799  * ice_set_link - turn on/off physical link
3800  * @vsi: VSI to modify physical link on
3801  * @ena: turn on/off physical link
3802  */
ice_set_link(struct ice_vsi * vsi,bool ena)3803 int ice_set_link(struct ice_vsi *vsi, bool ena)
3804 {
3805 	struct device *dev = ice_pf_to_dev(vsi->back);
3806 	struct ice_port_info *pi = vsi->port_info;
3807 	struct ice_hw *hw = pi->hw;
3808 	int status;
3809 
3810 	if (vsi->type != ICE_VSI_PF)
3811 		return -EINVAL;
3812 
3813 	status = ice_aq_set_link_restart_an(pi, ena, NULL);
3814 
3815 	/* if link is owned by manageability, FW will return ICE_AQ_RC_EMODE.
3816 	 * this is not a fatal error, so print a warning message and return
3817 	 * a success code. Return an error if FW returns an error code other
3818 	 * than ICE_AQ_RC_EMODE
3819 	 */
3820 	if (status == -EIO) {
3821 		if (hw->adminq.sq_last_status == ICE_AQ_RC_EMODE)
3822 			dev_dbg(dev, "can't set link to %s, err %d aq_err %s. not fatal, continuing\n",
3823 				(ena ? "ON" : "OFF"), status,
3824 				ice_aq_str(hw->adminq.sq_last_status));
3825 	} else if (status) {
3826 		dev_err(dev, "can't set link to %s, err %d aq_err %s\n",
3827 			(ena ? "ON" : "OFF"), status,
3828 			ice_aq_str(hw->adminq.sq_last_status));
3829 		return status;
3830 	}
3831 
3832 	return 0;
3833 }
3834 
3835 /**
3836  * ice_vsi_add_vlan_zero - add VLAN 0 filter(s) for this VSI
3837  * @vsi: VSI used to add VLAN filters
3838  *
3839  * In Single VLAN Mode (SVM), single VLAN filters via ICE_SW_LKUP_VLAN are based
3840  * on the inner VLAN ID, so the VLAN TPID (i.e. 0x8100 or 0x888a8) doesn't
3841  * matter. In Double VLAN Mode (DVM), outer/single VLAN filters via
3842  * ICE_SW_LKUP_VLAN are based on the outer/single VLAN ID + VLAN TPID.
3843  *
3844  * For both modes add a VLAN 0 + no VLAN TPID filter to handle untagged traffic
3845  * when VLAN pruning is enabled. Also, this handles VLAN 0 priority tagged
3846  * traffic in SVM, since the VLAN TPID isn't part of filtering.
3847  *
3848  * If DVM is enabled then an explicit VLAN 0 + VLAN TPID filter needs to be
3849  * added to allow VLAN 0 priority tagged traffic in DVM, since the VLAN TPID is
3850  * part of filtering.
3851  */
ice_vsi_add_vlan_zero(struct ice_vsi * vsi)3852 int ice_vsi_add_vlan_zero(struct ice_vsi *vsi)
3853 {
3854 	struct ice_vsi_vlan_ops *vlan_ops = ice_get_compat_vsi_vlan_ops(vsi);
3855 	struct ice_vlan vlan;
3856 	int err;
3857 
3858 	vlan = ICE_VLAN(0, 0, 0);
3859 	err = vlan_ops->add_vlan(vsi, &vlan);
3860 	if (err && err != -EEXIST)
3861 		return err;
3862 
3863 	/* in SVM both VLAN 0 filters are identical */
3864 	if (!ice_is_dvm_ena(&vsi->back->hw))
3865 		return 0;
3866 
3867 	vlan = ICE_VLAN(ETH_P_8021Q, 0, 0);
3868 	err = vlan_ops->add_vlan(vsi, &vlan);
3869 	if (err && err != -EEXIST)
3870 		return err;
3871 
3872 	return 0;
3873 }
3874 
3875 /**
3876  * ice_vsi_del_vlan_zero - delete VLAN 0 filter(s) for this VSI
3877  * @vsi: VSI used to add VLAN filters
3878  *
3879  * Delete the VLAN 0 filters in the same manner that they were added in
3880  * ice_vsi_add_vlan_zero.
3881  */
ice_vsi_del_vlan_zero(struct ice_vsi * vsi)3882 int ice_vsi_del_vlan_zero(struct ice_vsi *vsi)
3883 {
3884 	struct ice_vsi_vlan_ops *vlan_ops = ice_get_compat_vsi_vlan_ops(vsi);
3885 	struct ice_vlan vlan;
3886 	int err;
3887 
3888 	vlan = ICE_VLAN(0, 0, 0);
3889 	err = vlan_ops->del_vlan(vsi, &vlan);
3890 	if (err && err != -EEXIST)
3891 		return err;
3892 
3893 	/* in SVM both VLAN 0 filters are identical */
3894 	if (!ice_is_dvm_ena(&vsi->back->hw))
3895 		return 0;
3896 
3897 	vlan = ICE_VLAN(ETH_P_8021Q, 0, 0);
3898 	err = vlan_ops->del_vlan(vsi, &vlan);
3899 	if (err && err != -EEXIST)
3900 		return err;
3901 
3902 	/* when deleting the last VLAN filter, make sure to disable the VLAN
3903 	 * promisc mode so the filter isn't left by accident
3904 	 */
3905 	return ice_clear_vsi_promisc(&vsi->back->hw, vsi->idx,
3906 				    ICE_MCAST_VLAN_PROMISC_BITS, 0);
3907 }
3908 
3909 /**
3910  * ice_vsi_num_zero_vlans - get number of VLAN 0 filters based on VLAN mode
3911  * @vsi: VSI used to get the VLAN mode
3912  *
3913  * If DVM is enabled then 2 VLAN 0 filters are added, else if SVM is enabled
3914  * then 1 VLAN 0 filter is added. See ice_vsi_add_vlan_zero for more details.
3915  */
ice_vsi_num_zero_vlans(struct ice_vsi * vsi)3916 static u16 ice_vsi_num_zero_vlans(struct ice_vsi *vsi)
3917 {
3918 #define ICE_DVM_NUM_ZERO_VLAN_FLTRS	2
3919 #define ICE_SVM_NUM_ZERO_VLAN_FLTRS	1
3920 	/* no VLAN 0 filter is created when a port VLAN is active */
3921 	if (vsi->type == ICE_VSI_VF) {
3922 		if (WARN_ON(!vsi->vf))
3923 			return 0;
3924 
3925 		if (ice_vf_is_port_vlan_ena(vsi->vf))
3926 			return 0;
3927 	}
3928 
3929 	if (ice_is_dvm_ena(&vsi->back->hw))
3930 		return ICE_DVM_NUM_ZERO_VLAN_FLTRS;
3931 	else
3932 		return ICE_SVM_NUM_ZERO_VLAN_FLTRS;
3933 }
3934 
3935 /**
3936  * ice_vsi_has_non_zero_vlans - check if VSI has any non-zero VLANs
3937  * @vsi: VSI used to determine if any non-zero VLANs have been added
3938  */
ice_vsi_has_non_zero_vlans(struct ice_vsi * vsi)3939 bool ice_vsi_has_non_zero_vlans(struct ice_vsi *vsi)
3940 {
3941 	return (vsi->num_vlan > ice_vsi_num_zero_vlans(vsi));
3942 }
3943 
3944 /**
3945  * ice_vsi_num_non_zero_vlans - get the number of non-zero VLANs for this VSI
3946  * @vsi: VSI used to get the number of non-zero VLANs added
3947  */
ice_vsi_num_non_zero_vlans(struct ice_vsi * vsi)3948 u16 ice_vsi_num_non_zero_vlans(struct ice_vsi *vsi)
3949 {
3950 	return (vsi->num_vlan - ice_vsi_num_zero_vlans(vsi));
3951 }
3952 
3953 /**
3954  * ice_is_feature_supported
3955  * @pf: pointer to the struct ice_pf instance
3956  * @f: feature enum to be checked
3957  *
3958  * returns true if feature is supported, false otherwise
3959  */
ice_is_feature_supported(struct ice_pf * pf,enum ice_feature f)3960 bool ice_is_feature_supported(struct ice_pf *pf, enum ice_feature f)
3961 {
3962 	if (f < 0 || f >= ICE_F_MAX)
3963 		return false;
3964 
3965 	return test_bit(f, pf->features);
3966 }
3967 
3968 /**
3969  * ice_set_feature_support
3970  * @pf: pointer to the struct ice_pf instance
3971  * @f: feature enum to set
3972  */
ice_set_feature_support(struct ice_pf * pf,enum ice_feature f)3973 void ice_set_feature_support(struct ice_pf *pf, enum ice_feature f)
3974 {
3975 	if (f < 0 || f >= ICE_F_MAX)
3976 		return;
3977 
3978 	set_bit(f, pf->features);
3979 }
3980 
3981 /**
3982  * ice_clear_feature_support
3983  * @pf: pointer to the struct ice_pf instance
3984  * @f: feature enum to clear
3985  */
ice_clear_feature_support(struct ice_pf * pf,enum ice_feature f)3986 void ice_clear_feature_support(struct ice_pf *pf, enum ice_feature f)
3987 {
3988 	if (f < 0 || f >= ICE_F_MAX)
3989 		return;
3990 
3991 	clear_bit(f, pf->features);
3992 }
3993 
3994 /**
3995  * ice_init_feature_support
3996  * @pf: pointer to the struct ice_pf instance
3997  *
3998  * called during init to setup supported feature
3999  */
ice_init_feature_support(struct ice_pf * pf)4000 void ice_init_feature_support(struct ice_pf *pf)
4001 {
4002 	switch (pf->hw.device_id) {
4003 	case ICE_DEV_ID_E810C_BACKPLANE:
4004 	case ICE_DEV_ID_E810C_QSFP:
4005 	case ICE_DEV_ID_E810C_SFP:
4006 		ice_set_feature_support(pf, ICE_F_DSCP);
4007 		ice_set_feature_support(pf, ICE_F_PTP_EXTTS);
4008 		if (ice_is_e810t(&pf->hw)) {
4009 			ice_set_feature_support(pf, ICE_F_SMA_CTRL);
4010 			if (ice_gnss_is_gps_present(&pf->hw))
4011 				ice_set_feature_support(pf, ICE_F_GNSS);
4012 		}
4013 		break;
4014 	default:
4015 		break;
4016 	}
4017 }
4018 
4019 /**
4020  * ice_vsi_update_security - update security block in VSI
4021  * @vsi: pointer to VSI structure
4022  * @fill: function pointer to fill ctx
4023  */
4024 int
ice_vsi_update_security(struct ice_vsi * vsi,void (* fill)(struct ice_vsi_ctx *))4025 ice_vsi_update_security(struct ice_vsi *vsi, void (*fill)(struct ice_vsi_ctx *))
4026 {
4027 	struct ice_vsi_ctx ctx = { 0 };
4028 
4029 	ctx.info = vsi->info;
4030 	ctx.info.valid_sections = cpu_to_le16(ICE_AQ_VSI_PROP_SECURITY_VALID);
4031 	fill(&ctx);
4032 
4033 	if (ice_update_vsi(&vsi->back->hw, vsi->idx, &ctx, NULL))
4034 		return -ENODEV;
4035 
4036 	vsi->info = ctx.info;
4037 	return 0;
4038 }
4039 
4040 /**
4041  * ice_vsi_ctx_set_antispoof - set antispoof function in VSI ctx
4042  * @ctx: pointer to VSI ctx structure
4043  */
ice_vsi_ctx_set_antispoof(struct ice_vsi_ctx * ctx)4044 void ice_vsi_ctx_set_antispoof(struct ice_vsi_ctx *ctx)
4045 {
4046 	ctx->info.sec_flags |= ICE_AQ_VSI_SEC_FLAG_ENA_MAC_ANTI_SPOOF |
4047 			       (ICE_AQ_VSI_SEC_TX_VLAN_PRUNE_ENA <<
4048 				ICE_AQ_VSI_SEC_TX_PRUNE_ENA_S);
4049 }
4050 
4051 /**
4052  * ice_vsi_ctx_clear_antispoof - clear antispoof function in VSI ctx
4053  * @ctx: pointer to VSI ctx structure
4054  */
ice_vsi_ctx_clear_antispoof(struct ice_vsi_ctx * ctx)4055 void ice_vsi_ctx_clear_antispoof(struct ice_vsi_ctx *ctx)
4056 {
4057 	ctx->info.sec_flags &= ~ICE_AQ_VSI_SEC_FLAG_ENA_MAC_ANTI_SPOOF &
4058 			       ~(ICE_AQ_VSI_SEC_TX_VLAN_PRUNE_ENA <<
4059 				 ICE_AQ_VSI_SEC_TX_PRUNE_ENA_S);
4060 }
4061 
4062 /**
4063  * ice_vsi_ctx_set_allow_override - allow destination override on VSI
4064  * @ctx: pointer to VSI ctx structure
4065  */
ice_vsi_ctx_set_allow_override(struct ice_vsi_ctx * ctx)4066 void ice_vsi_ctx_set_allow_override(struct ice_vsi_ctx *ctx)
4067 {
4068 	ctx->info.sec_flags |= ICE_AQ_VSI_SEC_FLAG_ALLOW_DEST_OVRD;
4069 }
4070 
4071 /**
4072  * ice_vsi_ctx_clear_allow_override - turn off destination override on VSI
4073  * @ctx: pointer to VSI ctx structure
4074  */
ice_vsi_ctx_clear_allow_override(struct ice_vsi_ctx * ctx)4075 void ice_vsi_ctx_clear_allow_override(struct ice_vsi_ctx *ctx)
4076 {
4077 	ctx->info.sec_flags &= ~ICE_AQ_VSI_SEC_FLAG_ALLOW_DEST_OVRD;
4078 }
4079 
4080 /**
4081  * ice_vsi_update_local_lb - update sw block in VSI with local loopback bit
4082  * @vsi: pointer to VSI structure
4083  * @set: set or unset the bit
4084  */
4085 int
ice_vsi_update_local_lb(struct ice_vsi * vsi,bool set)4086 ice_vsi_update_local_lb(struct ice_vsi *vsi, bool set)
4087 {
4088 	struct ice_vsi_ctx ctx = {
4089 		.info	= vsi->info,
4090 	};
4091 
4092 	ctx.info.valid_sections = cpu_to_le16(ICE_AQ_VSI_PROP_SW_VALID);
4093 	if (set)
4094 		ctx.info.sw_flags |= ICE_AQ_VSI_SW_FLAG_LOCAL_LB;
4095 	else
4096 		ctx.info.sw_flags &= ~ICE_AQ_VSI_SW_FLAG_LOCAL_LB;
4097 
4098 	if (ice_update_vsi(&vsi->back->hw, vsi->idx, &ctx, NULL))
4099 		return -ENODEV;
4100 
4101 	vsi->info = ctx.info;
4102 	return 0;
4103 }
4104