Loading...
Note: File does not exist in v4.6.
1// SPDX-License-Identifier: GPL-2.0
2/* Copyright (c) 2018, Intel Corporation. */
3
4#include "ice.h"
5#include "ice_vf_lib_private.h"
6#include "ice_base.h"
7#include "ice_lib.h"
8#include "ice_fltr.h"
9#include "ice_dcb_lib.h"
10#include "ice_flow.h"
11#include "ice_eswitch.h"
12#include "ice_virtchnl_allowlist.h"
13#include "ice_flex_pipe.h"
14#include "ice_vf_vsi_vlan_ops.h"
15#include "ice_vlan.h"
16
17/**
18 * ice_free_vf_entries - Free all VF entries from the hash table
19 * @pf: pointer to the PF structure
20 *
21 * Iterate over the VF hash table, removing and releasing all VF entries.
22 * Called during VF teardown or as cleanup during failed VF initialization.
23 */
24static void ice_free_vf_entries(struct ice_pf *pf)
25{
26 struct ice_vfs *vfs = &pf->vfs;
27 struct hlist_node *tmp;
28 struct ice_vf *vf;
29 unsigned int bkt;
30
31 /* Remove all VFs from the hash table and release their main
32 * reference. Once all references to the VF are dropped, ice_put_vf()
33 * will call ice_release_vf which will remove the VF memory.
34 */
35 lockdep_assert_held(&vfs->table_lock);
36
37 hash_for_each_safe(vfs->table, bkt, tmp, vf, entry) {
38 hash_del_rcu(&vf->entry);
39 ice_put_vf(vf);
40 }
41}
42
43/**
44 * ice_free_vf_res - Free a VF's resources
45 * @vf: pointer to the VF info
46 */
47static void ice_free_vf_res(struct ice_vf *vf)
48{
49 struct ice_pf *pf = vf->pf;
50 int i, last_vector_idx;
51
52 /* First, disable VF's configuration API to prevent OS from
53 * accessing the VF's VSI after it's freed or invalidated.
54 */
55 clear_bit(ICE_VF_STATE_INIT, vf->vf_states);
56 ice_vf_fdir_exit(vf);
57 /* free VF control VSI */
58 if (vf->ctrl_vsi_idx != ICE_NO_VSI)
59 ice_vf_ctrl_vsi_release(vf);
60
61 /* free VSI and disconnect it from the parent uplink */
62 if (vf->lan_vsi_idx != ICE_NO_VSI) {
63 ice_vf_vsi_release(vf);
64 vf->num_mac = 0;
65 }
66
67 last_vector_idx = vf->first_vector_idx + vf->num_msix - 1;
68
69 /* clear VF MDD event information */
70 memset(&vf->mdd_tx_events, 0, sizeof(vf->mdd_tx_events));
71 memset(&vf->mdd_rx_events, 0, sizeof(vf->mdd_rx_events));
72
73 /* Disable interrupts so that VF starts in a known state */
74 for (i = vf->first_vector_idx; i <= last_vector_idx; i++) {
75 wr32(&pf->hw, GLINT_DYN_CTL(i), GLINT_DYN_CTL_CLEARPBA_M);
76 ice_flush(&pf->hw);
77 }
78 /* reset some of the state variables keeping track of the resources */
79 clear_bit(ICE_VF_STATE_MC_PROMISC, vf->vf_states);
80 clear_bit(ICE_VF_STATE_UC_PROMISC, vf->vf_states);
81}
82
83/**
84 * ice_dis_vf_mappings
85 * @vf: pointer to the VF structure
86 */
87static void ice_dis_vf_mappings(struct ice_vf *vf)
88{
89 struct ice_pf *pf = vf->pf;
90 struct ice_vsi *vsi;
91 struct device *dev;
92 int first, last, v;
93 struct ice_hw *hw;
94
95 hw = &pf->hw;
96 vsi = ice_get_vf_vsi(vf);
97 if (WARN_ON(!vsi))
98 return;
99
100 dev = ice_pf_to_dev(pf);
101 wr32(hw, VPINT_ALLOC(vf->vf_id), 0);
102 wr32(hw, VPINT_ALLOC_PCI(vf->vf_id), 0);
103
104 first = vf->first_vector_idx;
105 last = first + vf->num_msix - 1;
106 for (v = first; v <= last; v++) {
107 u32 reg;
108
109 reg = FIELD_PREP(GLINT_VECT2FUNC_IS_PF_M, 1) |
110 FIELD_PREP(GLINT_VECT2FUNC_PF_NUM_M, hw->pf_id);
111 wr32(hw, GLINT_VECT2FUNC(v), reg);
112 }
113
114 if (vsi->tx_mapping_mode == ICE_VSI_MAP_CONTIG)
115 wr32(hw, VPLAN_TX_QBASE(vf->vf_id), 0);
116 else
117 dev_err(dev, "Scattered mode for VF Tx queues is not yet implemented\n");
118
119 if (vsi->rx_mapping_mode == ICE_VSI_MAP_CONTIG)
120 wr32(hw, VPLAN_RX_QBASE(vf->vf_id), 0);
121 else
122 dev_err(dev, "Scattered mode for VF Rx queues is not yet implemented\n");
123}
124
125/**
126 * ice_sriov_free_msix_res - Reset/free any used MSIX resources
127 * @pf: pointer to the PF structure
128 *
129 * Since no MSIX entries are taken from the pf->irq_tracker then just clear
130 * the pf->sriov_base_vector.
131 *
132 * Returns 0 on success, and -EINVAL on error.
133 */
134static int ice_sriov_free_msix_res(struct ice_pf *pf)
135{
136 if (!pf)
137 return -EINVAL;
138
139 bitmap_free(pf->sriov_irq_bm);
140 pf->sriov_irq_size = 0;
141 pf->sriov_base_vector = 0;
142
143 return 0;
144}
145
146/**
147 * ice_free_vfs - Free all VFs
148 * @pf: pointer to the PF structure
149 */
150void ice_free_vfs(struct ice_pf *pf)
151{
152 struct device *dev = ice_pf_to_dev(pf);
153 struct ice_vfs *vfs = &pf->vfs;
154 struct ice_hw *hw = &pf->hw;
155 struct ice_vf *vf;
156 unsigned int bkt;
157
158 if (!ice_has_vfs(pf))
159 return;
160
161 while (test_and_set_bit(ICE_VF_DIS, pf->state))
162 usleep_range(1000, 2000);
163
164 /* Disable IOV before freeing resources. This lets any VF drivers
165 * running in the host get themselves cleaned up before we yank
166 * the carpet out from underneath their feet.
167 */
168 if (!pci_vfs_assigned(pf->pdev))
169 pci_disable_sriov(pf->pdev);
170 else
171 dev_warn(dev, "VFs are assigned - not disabling SR-IOV\n");
172
173 ice_eswitch_reserve_cp_queues(pf, -ice_get_num_vfs(pf));
174
175 mutex_lock(&vfs->table_lock);
176
177 ice_for_each_vf(pf, bkt, vf) {
178 mutex_lock(&vf->cfg_lock);
179
180 ice_eswitch_detach(pf, vf);
181 ice_dis_vf_qs(vf);
182
183 if (test_bit(ICE_VF_STATE_INIT, vf->vf_states)) {
184 /* disable VF qp mappings and set VF disable state */
185 ice_dis_vf_mappings(vf);
186 set_bit(ICE_VF_STATE_DIS, vf->vf_states);
187 ice_free_vf_res(vf);
188 }
189
190 if (!pci_vfs_assigned(pf->pdev)) {
191 u32 reg_idx, bit_idx;
192
193 reg_idx = (hw->func_caps.vf_base_id + vf->vf_id) / 32;
194 bit_idx = (hw->func_caps.vf_base_id + vf->vf_id) % 32;
195 wr32(hw, GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx));
196 }
197
198 /* clear malicious info since the VF is getting released */
199 list_del(&vf->mbx_info.list_entry);
200
201 mutex_unlock(&vf->cfg_lock);
202 }
203
204 if (ice_sriov_free_msix_res(pf))
205 dev_err(dev, "Failed to free MSIX resources used by SR-IOV\n");
206
207 vfs->num_qps_per = 0;
208 ice_free_vf_entries(pf);
209
210 mutex_unlock(&vfs->table_lock);
211
212 clear_bit(ICE_VF_DIS, pf->state);
213 clear_bit(ICE_FLAG_SRIOV_ENA, pf->flags);
214}
215
216/**
217 * ice_vf_vsi_setup - Set up a VF VSI
218 * @vf: VF to setup VSI for
219 *
220 * Returns pointer to the successfully allocated VSI struct on success,
221 * otherwise returns NULL on failure.
222 */
223static struct ice_vsi *ice_vf_vsi_setup(struct ice_vf *vf)
224{
225 struct ice_vsi_cfg_params params = {};
226 struct ice_pf *pf = vf->pf;
227 struct ice_vsi *vsi;
228
229 params.type = ICE_VSI_VF;
230 params.pi = ice_vf_get_port_info(vf);
231 params.vf = vf;
232 params.flags = ICE_VSI_FLAG_INIT;
233
234 vsi = ice_vsi_setup(pf, ¶ms);
235
236 if (!vsi) {
237 dev_err(ice_pf_to_dev(pf), "Failed to create VF VSI\n");
238 ice_vf_invalidate_vsi(vf);
239 return NULL;
240 }
241
242 vf->lan_vsi_idx = vsi->idx;
243
244 return vsi;
245}
246
247
248/**
249 * ice_ena_vf_msix_mappings - enable VF MSIX mappings in hardware
250 * @vf: VF to enable MSIX mappings for
251 *
252 * Some of the registers need to be indexed/configured using hardware global
253 * device values and other registers need 0-based values, which represent PF
254 * based values.
255 */
256static void ice_ena_vf_msix_mappings(struct ice_vf *vf)
257{
258 int device_based_first_msix, device_based_last_msix;
259 int pf_based_first_msix, pf_based_last_msix, v;
260 struct ice_pf *pf = vf->pf;
261 int device_based_vf_id;
262 struct ice_hw *hw;
263 u32 reg;
264
265 hw = &pf->hw;
266 pf_based_first_msix = vf->first_vector_idx;
267 pf_based_last_msix = (pf_based_first_msix + vf->num_msix) - 1;
268
269 device_based_first_msix = pf_based_first_msix +
270 pf->hw.func_caps.common_cap.msix_vector_first_id;
271 device_based_last_msix =
272 (device_based_first_msix + vf->num_msix) - 1;
273 device_based_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
274
275 reg = FIELD_PREP(VPINT_ALLOC_FIRST_M, device_based_first_msix) |
276 FIELD_PREP(VPINT_ALLOC_LAST_M, device_based_last_msix) |
277 VPINT_ALLOC_VALID_M;
278 wr32(hw, VPINT_ALLOC(vf->vf_id), reg);
279
280 reg = FIELD_PREP(VPINT_ALLOC_PCI_FIRST_M, device_based_first_msix) |
281 FIELD_PREP(VPINT_ALLOC_PCI_LAST_M, device_based_last_msix) |
282 VPINT_ALLOC_PCI_VALID_M;
283 wr32(hw, VPINT_ALLOC_PCI(vf->vf_id), reg);
284
285 /* map the interrupts to its functions */
286 for (v = pf_based_first_msix; v <= pf_based_last_msix; v++) {
287 reg = FIELD_PREP(GLINT_VECT2FUNC_VF_NUM_M, device_based_vf_id) |
288 FIELD_PREP(GLINT_VECT2FUNC_PF_NUM_M, hw->pf_id);
289 wr32(hw, GLINT_VECT2FUNC(v), reg);
290 }
291
292 /* Map mailbox interrupt to VF MSI-X vector 0 */
293 wr32(hw, VPINT_MBX_CTL(device_based_vf_id), VPINT_MBX_CTL_CAUSE_ENA_M);
294}
295
296/**
297 * ice_ena_vf_q_mappings - enable Rx/Tx queue mappings for a VF
298 * @vf: VF to enable the mappings for
299 * @max_txq: max Tx queues allowed on the VF's VSI
300 * @max_rxq: max Rx queues allowed on the VF's VSI
301 */
302static void ice_ena_vf_q_mappings(struct ice_vf *vf, u16 max_txq, u16 max_rxq)
303{
304 struct device *dev = ice_pf_to_dev(vf->pf);
305 struct ice_vsi *vsi = ice_get_vf_vsi(vf);
306 struct ice_hw *hw = &vf->pf->hw;
307 u32 reg;
308
309 if (WARN_ON(!vsi))
310 return;
311
312 /* set regardless of mapping mode */
313 wr32(hw, VPLAN_TXQ_MAPENA(vf->vf_id), VPLAN_TXQ_MAPENA_TX_ENA_M);
314
315 /* VF Tx queues allocation */
316 if (vsi->tx_mapping_mode == ICE_VSI_MAP_CONTIG) {
317 /* set the VF PF Tx queue range
318 * VFNUMQ value should be set to (number of queues - 1). A value
319 * of 0 means 1 queue and a value of 255 means 256 queues
320 */
321 reg = FIELD_PREP(VPLAN_TX_QBASE_VFFIRSTQ_M, vsi->txq_map[0]) |
322 FIELD_PREP(VPLAN_TX_QBASE_VFNUMQ_M, max_txq - 1);
323 wr32(hw, VPLAN_TX_QBASE(vf->vf_id), reg);
324 } else {
325 dev_err(dev, "Scattered mode for VF Tx queues is not yet implemented\n");
326 }
327
328 /* set regardless of mapping mode */
329 wr32(hw, VPLAN_RXQ_MAPENA(vf->vf_id), VPLAN_RXQ_MAPENA_RX_ENA_M);
330
331 /* VF Rx queues allocation */
332 if (vsi->rx_mapping_mode == ICE_VSI_MAP_CONTIG) {
333 /* set the VF PF Rx queue range
334 * VFNUMQ value should be set to (number of queues - 1). A value
335 * of 0 means 1 queue and a value of 255 means 256 queues
336 */
337 reg = FIELD_PREP(VPLAN_RX_QBASE_VFFIRSTQ_M, vsi->rxq_map[0]) |
338 FIELD_PREP(VPLAN_RX_QBASE_VFNUMQ_M, max_rxq - 1);
339 wr32(hw, VPLAN_RX_QBASE(vf->vf_id), reg);
340 } else {
341 dev_err(dev, "Scattered mode for VF Rx queues is not yet implemented\n");
342 }
343}
344
345/**
346 * ice_ena_vf_mappings - enable VF MSIX and queue mapping
347 * @vf: pointer to the VF structure
348 */
349static void ice_ena_vf_mappings(struct ice_vf *vf)
350{
351 struct ice_vsi *vsi = ice_get_vf_vsi(vf);
352
353 if (WARN_ON(!vsi))
354 return;
355
356 ice_ena_vf_msix_mappings(vf);
357 ice_ena_vf_q_mappings(vf, vsi->alloc_txq, vsi->alloc_rxq);
358}
359
360/**
361 * ice_calc_vf_reg_idx - Calculate the VF's register index in the PF space
362 * @vf: VF to calculate the register index for
363 * @q_vector: a q_vector associated to the VF
364 */
365int ice_calc_vf_reg_idx(struct ice_vf *vf, struct ice_q_vector *q_vector)
366{
367 if (!vf || !q_vector)
368 return -EINVAL;
369
370 /* always add one to account for the OICR being the first MSIX */
371 return vf->first_vector_idx + q_vector->v_idx + 1;
372}
373
374/**
375 * ice_sriov_set_msix_res - Set any used MSIX resources
376 * @pf: pointer to PF structure
377 * @num_msix_needed: number of MSIX vectors needed for all SR-IOV VFs
378 *
379 * This function allows SR-IOV resources to be taken from the end of the PF's
380 * allowed HW MSIX vectors so that the irq_tracker will not be affected. We
381 * just set the pf->sriov_base_vector and return success.
382 *
383 * If there are not enough resources available, return an error. This should
384 * always be caught by ice_set_per_vf_res().
385 *
386 * Return 0 on success, and -EINVAL when there are not enough MSIX vectors
387 * in the PF's space available for SR-IOV.
388 */
389static int ice_sriov_set_msix_res(struct ice_pf *pf, u16 num_msix_needed)
390{
391 u16 total_vectors = pf->hw.func_caps.common_cap.num_msix_vectors;
392 int vectors_used = ice_get_max_used_msix_vector(pf);
393 int sriov_base_vector;
394
395 sriov_base_vector = total_vectors - num_msix_needed;
396
397 /* make sure we only grab irq_tracker entries from the list end and
398 * that we have enough available MSIX vectors
399 */
400 if (sriov_base_vector < vectors_used)
401 return -EINVAL;
402
403 pf->sriov_base_vector = sriov_base_vector;
404
405 return 0;
406}
407
408/**
409 * ice_set_per_vf_res - check if vectors and queues are available
410 * @pf: pointer to the PF structure
411 * @num_vfs: the number of SR-IOV VFs being configured
412 *
413 * First, determine HW interrupts from common pool. If we allocate fewer VFs, we
414 * get more vectors and can enable more queues per VF. Note that this does not
415 * grab any vectors from the SW pool already allocated. Also note, that all
416 * vector counts include one for each VF's miscellaneous interrupt vector
417 * (i.e. OICR).
418 *
419 * Minimum VFs - 2 vectors, 1 queue pair
420 * Small VFs - 5 vectors, 4 queue pairs
421 * Medium VFs - 17 vectors, 16 queue pairs
422 *
423 * Second, determine number of queue pairs per VF by starting with a pre-defined
424 * maximum each VF supports. If this is not possible, then we adjust based on
425 * queue pairs available on the device.
426 *
427 * Lastly, set queue and MSI-X VF variables tracked by the PF so it can be used
428 * by each VF during VF initialization and reset.
429 */
430static int ice_set_per_vf_res(struct ice_pf *pf, u16 num_vfs)
431{
432 int vectors_used = ice_get_max_used_msix_vector(pf);
433 u16 num_msix_per_vf, num_txq, num_rxq, avail_qs;
434 int msix_avail_per_vf, msix_avail_for_sriov;
435 struct device *dev = ice_pf_to_dev(pf);
436 int err;
437
438 lockdep_assert_held(&pf->vfs.table_lock);
439
440 if (!num_vfs)
441 return -EINVAL;
442
443 /* determine MSI-X resources per VF */
444 msix_avail_for_sriov = pf->hw.func_caps.common_cap.num_msix_vectors -
445 vectors_used;
446 msix_avail_per_vf = msix_avail_for_sriov / num_vfs;
447 if (msix_avail_per_vf >= ICE_NUM_VF_MSIX_MED) {
448 num_msix_per_vf = ICE_NUM_VF_MSIX_MED;
449 } else if (msix_avail_per_vf >= ICE_NUM_VF_MSIX_SMALL) {
450 num_msix_per_vf = ICE_NUM_VF_MSIX_SMALL;
451 } else if (msix_avail_per_vf >= ICE_NUM_VF_MSIX_MULTIQ_MIN) {
452 num_msix_per_vf = ICE_NUM_VF_MSIX_MULTIQ_MIN;
453 } else if (msix_avail_per_vf >= ICE_MIN_INTR_PER_VF) {
454 num_msix_per_vf = ICE_MIN_INTR_PER_VF;
455 } else {
456 dev_err(dev, "Only %d MSI-X interrupts available for SR-IOV. Not enough to support minimum of %d MSI-X interrupts per VF for %d VFs\n",
457 msix_avail_for_sriov, ICE_MIN_INTR_PER_VF,
458 num_vfs);
459 return -ENOSPC;
460 }
461
462 num_txq = min_t(u16, num_msix_per_vf - ICE_NONQ_VECS_VF,
463 ICE_MAX_RSS_QS_PER_VF);
464 avail_qs = ice_get_avail_txq_count(pf) / num_vfs;
465 if (!avail_qs)
466 num_txq = 0;
467 else if (num_txq > avail_qs)
468 num_txq = rounddown_pow_of_two(avail_qs);
469
470 num_rxq = min_t(u16, num_msix_per_vf - ICE_NONQ_VECS_VF,
471 ICE_MAX_RSS_QS_PER_VF);
472 avail_qs = ice_get_avail_rxq_count(pf) / num_vfs;
473 if (!avail_qs)
474 num_rxq = 0;
475 else if (num_rxq > avail_qs)
476 num_rxq = rounddown_pow_of_two(avail_qs);
477
478 if (num_txq < ICE_MIN_QS_PER_VF || num_rxq < ICE_MIN_QS_PER_VF) {
479 dev_err(dev, "Not enough queues to support minimum of %d queue pairs per VF for %d VFs\n",
480 ICE_MIN_QS_PER_VF, num_vfs);
481 return -ENOSPC;
482 }
483
484 err = ice_sriov_set_msix_res(pf, num_msix_per_vf * num_vfs);
485 if (err) {
486 dev_err(dev, "Unable to set MSI-X resources for %d VFs, err %d\n",
487 num_vfs, err);
488 return err;
489 }
490
491 /* only allow equal Tx/Rx queue count (i.e. queue pairs) */
492 pf->vfs.num_qps_per = min_t(int, num_txq, num_rxq);
493 pf->vfs.num_msix_per = num_msix_per_vf;
494 dev_info(dev, "Enabling %d VFs with %d vectors and %d queues per VF\n",
495 num_vfs, pf->vfs.num_msix_per, pf->vfs.num_qps_per);
496
497 return 0;
498}
499
500/**
501 * ice_sriov_get_irqs - get irqs for SR-IOV usacase
502 * @pf: pointer to PF structure
503 * @needed: number of irqs to get
504 *
505 * This returns the first MSI-X vector index in PF space that is used by this
506 * VF. This index is used when accessing PF relative registers such as
507 * GLINT_VECT2FUNC and GLINT_DYN_CTL.
508 * This will always be the OICR index in the AVF driver so any functionality
509 * using vf->first_vector_idx for queue configuration_id: id of VF which will
510 * use this irqs
511 *
512 * Only SRIOV specific vectors are tracked in sriov_irq_bm. SRIOV vectors are
513 * allocated from the end of global irq index. First bit in sriov_irq_bm means
514 * last irq index etc. It simplifies extension of SRIOV vectors.
515 * They will be always located from sriov_base_vector to the last irq
516 * index. While increasing/decreasing sriov_base_vector can be moved.
517 */
518static int ice_sriov_get_irqs(struct ice_pf *pf, u16 needed)
519{
520 int res = bitmap_find_next_zero_area(pf->sriov_irq_bm,
521 pf->sriov_irq_size, 0, needed, 0);
522 /* conversion from number in bitmap to global irq index */
523 int index = pf->sriov_irq_size - res - needed;
524
525 if (res >= pf->sriov_irq_size || index < pf->sriov_base_vector)
526 return -ENOENT;
527
528 bitmap_set(pf->sriov_irq_bm, res, needed);
529 return index;
530}
531
532/**
533 * ice_sriov_free_irqs - free irqs used by the VF
534 * @pf: pointer to PF structure
535 * @vf: pointer to VF structure
536 */
537static void ice_sriov_free_irqs(struct ice_pf *pf, struct ice_vf *vf)
538{
539 /* Move back from first vector index to first index in bitmap */
540 int bm_i = pf->sriov_irq_size - vf->first_vector_idx - vf->num_msix;
541
542 bitmap_clear(pf->sriov_irq_bm, bm_i, vf->num_msix);
543 vf->first_vector_idx = 0;
544}
545
546/**
547 * ice_init_vf_vsi_res - initialize/setup VF VSI resources
548 * @vf: VF to initialize/setup the VSI for
549 *
550 * This function creates a VSI for the VF, adds a VLAN 0 filter, and sets up the
551 * VF VSI's broadcast filter and is only used during initial VF creation.
552 */
553static int ice_init_vf_vsi_res(struct ice_vf *vf)
554{
555 struct ice_pf *pf = vf->pf;
556 struct ice_vsi *vsi;
557 int err;
558
559 vf->first_vector_idx = ice_sriov_get_irqs(pf, vf->num_msix);
560 if (vf->first_vector_idx < 0)
561 return -ENOMEM;
562
563 vsi = ice_vf_vsi_setup(vf);
564 if (!vsi)
565 return -ENOMEM;
566
567 err = ice_vf_init_host_cfg(vf, vsi);
568 if (err)
569 goto release_vsi;
570
571 return 0;
572
573release_vsi:
574 ice_vf_vsi_release(vf);
575 return err;
576}
577
578/**
579 * ice_start_vfs - start VFs so they are ready to be used by SR-IOV
580 * @pf: PF the VFs are associated with
581 */
582static int ice_start_vfs(struct ice_pf *pf)
583{
584 struct ice_hw *hw = &pf->hw;
585 unsigned int bkt, it_cnt;
586 struct ice_vf *vf;
587 int retval;
588
589 lockdep_assert_held(&pf->vfs.table_lock);
590
591 it_cnt = 0;
592 ice_for_each_vf(pf, bkt, vf) {
593 vf->vf_ops->clear_reset_trigger(vf);
594
595 retval = ice_init_vf_vsi_res(vf);
596 if (retval) {
597 dev_err(ice_pf_to_dev(pf), "Failed to initialize VSI resources for VF %d, error %d\n",
598 vf->vf_id, retval);
599 goto teardown;
600 }
601
602 retval = ice_eswitch_attach(pf, vf);
603 if (retval) {
604 dev_err(ice_pf_to_dev(pf), "Failed to attach VF %d to eswitch, error %d",
605 vf->vf_id, retval);
606 ice_vf_vsi_release(vf);
607 goto teardown;
608 }
609
610 set_bit(ICE_VF_STATE_INIT, vf->vf_states);
611 ice_ena_vf_mappings(vf);
612 wr32(hw, VFGEN_RSTAT(vf->vf_id), VIRTCHNL_VFR_VFACTIVE);
613 it_cnt++;
614 }
615
616 ice_flush(hw);
617 return 0;
618
619teardown:
620 ice_for_each_vf(pf, bkt, vf) {
621 if (it_cnt == 0)
622 break;
623
624 ice_dis_vf_mappings(vf);
625 ice_vf_vsi_release(vf);
626 it_cnt--;
627 }
628
629 return retval;
630}
631
632/**
633 * ice_sriov_free_vf - Free VF memory after all references are dropped
634 * @vf: pointer to VF to free
635 *
636 * Called by ice_put_vf through ice_release_vf once the last reference to a VF
637 * structure has been dropped.
638 */
639static void ice_sriov_free_vf(struct ice_vf *vf)
640{
641 mutex_destroy(&vf->cfg_lock);
642
643 kfree_rcu(vf, rcu);
644}
645
646/**
647 * ice_sriov_clear_reset_state - clears VF Reset status register
648 * @vf: the vf to configure
649 */
650static void ice_sriov_clear_reset_state(struct ice_vf *vf)
651{
652 struct ice_hw *hw = &vf->pf->hw;
653
654 /* Clear the reset status register so that VF immediately sees that
655 * the device is resetting, even if hardware hasn't yet gotten around
656 * to clearing VFGEN_RSTAT for us.
657 */
658 wr32(hw, VFGEN_RSTAT(vf->vf_id), VIRTCHNL_VFR_INPROGRESS);
659}
660
661/**
662 * ice_sriov_clear_mbx_register - clears SRIOV VF's mailbox registers
663 * @vf: the vf to configure
664 */
665static void ice_sriov_clear_mbx_register(struct ice_vf *vf)
666{
667 struct ice_pf *pf = vf->pf;
668
669 wr32(&pf->hw, VF_MBX_ARQLEN(vf->vf_id), 0);
670 wr32(&pf->hw, VF_MBX_ATQLEN(vf->vf_id), 0);
671}
672
673/**
674 * ice_sriov_trigger_reset_register - trigger VF reset for SRIOV VF
675 * @vf: pointer to VF structure
676 * @is_vflr: true if reset occurred due to VFLR
677 *
678 * Trigger and cleanup after a VF reset for a SR-IOV VF.
679 */
680static void ice_sriov_trigger_reset_register(struct ice_vf *vf, bool is_vflr)
681{
682 struct ice_pf *pf = vf->pf;
683 u32 reg, reg_idx, bit_idx;
684 unsigned int vf_abs_id, i;
685 struct device *dev;
686 struct ice_hw *hw;
687
688 dev = ice_pf_to_dev(pf);
689 hw = &pf->hw;
690 vf_abs_id = vf->vf_id + hw->func_caps.vf_base_id;
691
692 /* In the case of a VFLR, HW has already reset the VF and we just need
693 * to clean up. Otherwise we must first trigger the reset using the
694 * VFRTRIG register.
695 */
696 if (!is_vflr) {
697 reg = rd32(hw, VPGEN_VFRTRIG(vf->vf_id));
698 reg |= VPGEN_VFRTRIG_VFSWR_M;
699 wr32(hw, VPGEN_VFRTRIG(vf->vf_id), reg);
700 }
701
702 /* clear the VFLR bit in GLGEN_VFLRSTAT */
703 reg_idx = (vf_abs_id) / 32;
704 bit_idx = (vf_abs_id) % 32;
705 wr32(hw, GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx));
706 ice_flush(hw);
707
708 wr32(hw, PF_PCI_CIAA,
709 VF_DEVICE_STATUS | (vf_abs_id << PF_PCI_CIAA_VF_NUM_S));
710 for (i = 0; i < ICE_PCI_CIAD_WAIT_COUNT; i++) {
711 reg = rd32(hw, PF_PCI_CIAD);
712 /* no transactions pending so stop polling */
713 if ((reg & VF_TRANS_PENDING_M) == 0)
714 break;
715
716 dev_err(dev, "VF %u PCI transactions stuck\n", vf->vf_id);
717 udelay(ICE_PCI_CIAD_WAIT_DELAY_US);
718 }
719}
720
721/**
722 * ice_sriov_poll_reset_status - poll SRIOV VF reset status
723 * @vf: pointer to VF structure
724 *
725 * Returns true when reset is successful, else returns false
726 */
727static bool ice_sriov_poll_reset_status(struct ice_vf *vf)
728{
729 struct ice_pf *pf = vf->pf;
730 unsigned int i;
731 u32 reg;
732
733 for (i = 0; i < 10; i++) {
734 /* VF reset requires driver to first reset the VF and then
735 * poll the status register to make sure that the reset
736 * completed successfully.
737 */
738 reg = rd32(&pf->hw, VPGEN_VFRSTAT(vf->vf_id));
739 if (reg & VPGEN_VFRSTAT_VFRD_M)
740 return true;
741
742 /* only sleep if the reset is not done */
743 usleep_range(10, 20);
744 }
745 return false;
746}
747
748/**
749 * ice_sriov_clear_reset_trigger - enable VF to access hardware
750 * @vf: VF to enabled hardware access for
751 */
752static void ice_sriov_clear_reset_trigger(struct ice_vf *vf)
753{
754 struct ice_hw *hw = &vf->pf->hw;
755 u32 reg;
756
757 reg = rd32(hw, VPGEN_VFRTRIG(vf->vf_id));
758 reg &= ~VPGEN_VFRTRIG_VFSWR_M;
759 wr32(hw, VPGEN_VFRTRIG(vf->vf_id), reg);
760 ice_flush(hw);
761}
762
763/**
764 * ice_sriov_post_vsi_rebuild - tasks to do after the VF's VSI have been rebuilt
765 * @vf: VF to perform tasks on
766 */
767static void ice_sriov_post_vsi_rebuild(struct ice_vf *vf)
768{
769 ice_ena_vf_mappings(vf);
770 wr32(&vf->pf->hw, VFGEN_RSTAT(vf->vf_id), VIRTCHNL_VFR_VFACTIVE);
771}
772
773static const struct ice_vf_ops ice_sriov_vf_ops = {
774 .reset_type = ICE_VF_RESET,
775 .free = ice_sriov_free_vf,
776 .clear_reset_state = ice_sriov_clear_reset_state,
777 .clear_mbx_register = ice_sriov_clear_mbx_register,
778 .trigger_reset_register = ice_sriov_trigger_reset_register,
779 .poll_reset_status = ice_sriov_poll_reset_status,
780 .clear_reset_trigger = ice_sriov_clear_reset_trigger,
781 .irq_close = NULL,
782 .post_vsi_rebuild = ice_sriov_post_vsi_rebuild,
783};
784
785/**
786 * ice_create_vf_entries - Allocate and insert VF entries
787 * @pf: pointer to the PF structure
788 * @num_vfs: the number of VFs to allocate
789 *
790 * Allocate new VF entries and insert them into the hash table. Set some
791 * basic default fields for initializing the new VFs.
792 *
793 * After this function exits, the hash table will have num_vfs entries
794 * inserted.
795 *
796 * Returns 0 on success or an integer error code on failure.
797 */
798static int ice_create_vf_entries(struct ice_pf *pf, u16 num_vfs)
799{
800 struct pci_dev *pdev = pf->pdev;
801 struct ice_vfs *vfs = &pf->vfs;
802 struct pci_dev *vfdev = NULL;
803 struct ice_vf *vf;
804 u16 vf_pdev_id;
805 int err, pos;
806
807 lockdep_assert_held(&vfs->table_lock);
808
809 pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);
810 pci_read_config_word(pdev, pos + PCI_SRIOV_VF_DID, &vf_pdev_id);
811
812 for (u16 vf_id = 0; vf_id < num_vfs; vf_id++) {
813 vf = kzalloc(sizeof(*vf), GFP_KERNEL);
814 if (!vf) {
815 err = -ENOMEM;
816 goto err_free_entries;
817 }
818 kref_init(&vf->refcnt);
819
820 vf->pf = pf;
821 vf->vf_id = vf_id;
822
823 /* set sriov vf ops for VFs created during SRIOV flow */
824 vf->vf_ops = &ice_sriov_vf_ops;
825
826 ice_initialize_vf_entry(vf);
827
828 do {
829 vfdev = pci_get_device(pdev->vendor, vf_pdev_id, vfdev);
830 } while (vfdev && vfdev->physfn != pdev);
831 vf->vfdev = vfdev;
832 vf->vf_sw_id = pf->first_sw;
833
834 pci_dev_get(vfdev);
835
836 /* set default number of MSI-X */
837 vf->num_msix = pf->vfs.num_msix_per;
838 vf->num_vf_qs = pf->vfs.num_qps_per;
839 ice_vc_set_default_allowlist(vf);
840
841 hash_add_rcu(vfs->table, &vf->entry, vf_id);
842 }
843
844 /* Decrement of refcount done by pci_get_device() inside the loop does
845 * not touch the last iteration's vfdev, so it has to be done manually
846 * to balance pci_dev_get() added within the loop.
847 */
848 pci_dev_put(vfdev);
849
850 return 0;
851
852err_free_entries:
853 ice_free_vf_entries(pf);
854 return err;
855}
856
857/**
858 * ice_ena_vfs - enable VFs so they are ready to be used
859 * @pf: pointer to the PF structure
860 * @num_vfs: number of VFs to enable
861 */
862static int ice_ena_vfs(struct ice_pf *pf, u16 num_vfs)
863{
864 int total_vectors = pf->hw.func_caps.common_cap.num_msix_vectors;
865 struct device *dev = ice_pf_to_dev(pf);
866 struct ice_hw *hw = &pf->hw;
867 int ret;
868
869 pf->sriov_irq_bm = bitmap_zalloc(total_vectors, GFP_KERNEL);
870 if (!pf->sriov_irq_bm)
871 return -ENOMEM;
872 pf->sriov_irq_size = total_vectors;
873
874 /* Disable global interrupt 0 so we don't try to handle the VFLR. */
875 wr32(hw, GLINT_DYN_CTL(pf->oicr_irq.index),
876 ICE_ITR_NONE << GLINT_DYN_CTL_ITR_INDX_S);
877 set_bit(ICE_OICR_INTR_DIS, pf->state);
878 ice_flush(hw);
879
880 ret = pci_enable_sriov(pf->pdev, num_vfs);
881 if (ret)
882 goto err_unroll_intr;
883
884 mutex_lock(&pf->vfs.table_lock);
885
886 ret = ice_set_per_vf_res(pf, num_vfs);
887 if (ret) {
888 dev_err(dev, "Not enough resources for %d VFs, err %d. Try with fewer number of VFs\n",
889 num_vfs, ret);
890 goto err_unroll_sriov;
891 }
892
893 ret = ice_create_vf_entries(pf, num_vfs);
894 if (ret) {
895 dev_err(dev, "Failed to allocate VF entries for %d VFs\n",
896 num_vfs);
897 goto err_unroll_sriov;
898 }
899
900 ice_eswitch_reserve_cp_queues(pf, num_vfs);
901 ret = ice_start_vfs(pf);
902 if (ret) {
903 dev_err(dev, "Failed to start %d VFs, err %d\n", num_vfs, ret);
904 ret = -EAGAIN;
905 goto err_unroll_vf_entries;
906 }
907
908 clear_bit(ICE_VF_DIS, pf->state);
909
910 /* rearm global interrupts */
911 if (test_and_clear_bit(ICE_OICR_INTR_DIS, pf->state))
912 ice_irq_dynamic_ena(hw, NULL, NULL);
913
914 mutex_unlock(&pf->vfs.table_lock);
915
916 return 0;
917
918err_unroll_vf_entries:
919 ice_free_vf_entries(pf);
920err_unroll_sriov:
921 mutex_unlock(&pf->vfs.table_lock);
922 pci_disable_sriov(pf->pdev);
923err_unroll_intr:
924 /* rearm interrupts here */
925 ice_irq_dynamic_ena(hw, NULL, NULL);
926 clear_bit(ICE_OICR_INTR_DIS, pf->state);
927 bitmap_free(pf->sriov_irq_bm);
928 return ret;
929}
930
931/**
932 * ice_pci_sriov_ena - Enable or change number of VFs
933 * @pf: pointer to the PF structure
934 * @num_vfs: number of VFs to allocate
935 *
936 * Returns 0 on success and negative on failure
937 */
938static int ice_pci_sriov_ena(struct ice_pf *pf, int num_vfs)
939{
940 struct device *dev = ice_pf_to_dev(pf);
941 int err;
942
943 if (!num_vfs) {
944 ice_free_vfs(pf);
945 return 0;
946 }
947
948 if (num_vfs > pf->vfs.num_supported) {
949 dev_err(dev, "Can't enable %d VFs, max VFs supported is %d\n",
950 num_vfs, pf->vfs.num_supported);
951 return -EOPNOTSUPP;
952 }
953
954 dev_info(dev, "Enabling %d VFs\n", num_vfs);
955 err = ice_ena_vfs(pf, num_vfs);
956 if (err) {
957 dev_err(dev, "Failed to enable SR-IOV: %d\n", err);
958 return err;
959 }
960
961 set_bit(ICE_FLAG_SRIOV_ENA, pf->flags);
962 return 0;
963}
964
965/**
966 * ice_check_sriov_allowed - check if SR-IOV is allowed based on various checks
967 * @pf: PF to enabled SR-IOV on
968 */
969static int ice_check_sriov_allowed(struct ice_pf *pf)
970{
971 struct device *dev = ice_pf_to_dev(pf);
972
973 if (!test_bit(ICE_FLAG_SRIOV_CAPABLE, pf->flags)) {
974 dev_err(dev, "This device is not capable of SR-IOV\n");
975 return -EOPNOTSUPP;
976 }
977
978 if (ice_is_safe_mode(pf)) {
979 dev_err(dev, "SR-IOV cannot be configured - Device is in Safe Mode\n");
980 return -EOPNOTSUPP;
981 }
982
983 if (!ice_pf_state_is_nominal(pf)) {
984 dev_err(dev, "Cannot enable SR-IOV, device not ready\n");
985 return -EBUSY;
986 }
987
988 return 0;
989}
990
991/**
992 * ice_sriov_get_vf_total_msix - return number of MSI-X used by VFs
993 * @pdev: pointer to pci_dev struct
994 *
995 * The function is called via sysfs ops
996 */
997u32 ice_sriov_get_vf_total_msix(struct pci_dev *pdev)
998{
999 struct ice_pf *pf = pci_get_drvdata(pdev);
1000
1001 return pf->sriov_irq_size - ice_get_max_used_msix_vector(pf);
1002}
1003
1004static int ice_sriov_move_base_vector(struct ice_pf *pf, int move)
1005{
1006 if (pf->sriov_base_vector - move < ice_get_max_used_msix_vector(pf))
1007 return -ENOMEM;
1008
1009 pf->sriov_base_vector -= move;
1010 return 0;
1011}
1012
1013static void ice_sriov_remap_vectors(struct ice_pf *pf, u16 restricted_id)
1014{
1015 u16 vf_ids[ICE_MAX_SRIOV_VFS];
1016 struct ice_vf *tmp_vf;
1017 int to_remap = 0, bkt;
1018
1019 /* For better irqs usage try to remap irqs of VFs
1020 * that aren't running yet
1021 */
1022 ice_for_each_vf(pf, bkt, tmp_vf) {
1023 /* skip VF which is changing the number of MSI-X */
1024 if (restricted_id == tmp_vf->vf_id ||
1025 test_bit(ICE_VF_STATE_ACTIVE, tmp_vf->vf_states))
1026 continue;
1027
1028 ice_dis_vf_mappings(tmp_vf);
1029 ice_sriov_free_irqs(pf, tmp_vf);
1030
1031 vf_ids[to_remap] = tmp_vf->vf_id;
1032 to_remap += 1;
1033 }
1034
1035 for (int i = 0; i < to_remap; i++) {
1036 tmp_vf = ice_get_vf_by_id(pf, vf_ids[i]);
1037 if (!tmp_vf)
1038 continue;
1039
1040 tmp_vf->first_vector_idx =
1041 ice_sriov_get_irqs(pf, tmp_vf->num_msix);
1042 /* there is no need to rebuild VSI as we are only changing the
1043 * vector indexes not amount of MSI-X or queues
1044 */
1045 ice_ena_vf_mappings(tmp_vf);
1046 ice_put_vf(tmp_vf);
1047 }
1048}
1049
1050/**
1051 * ice_sriov_set_msix_vec_count
1052 * @vf_dev: pointer to pci_dev struct of VF device
1053 * @msix_vec_count: new value for MSI-X amount on this VF
1054 *
1055 * Set requested MSI-X, queues and registers for @vf_dev.
1056 *
1057 * First do some sanity checks like if there are any VFs, if the new value
1058 * is correct etc. Then disable old mapping (MSI-X and queues registers), change
1059 * MSI-X and queues, rebuild VSI and enable new mapping.
1060 *
1061 * If it is possible (driver not binded to VF) try to remap also other VFs to
1062 * linearize irqs register usage.
1063 */
1064int ice_sriov_set_msix_vec_count(struct pci_dev *vf_dev, int msix_vec_count)
1065{
1066 struct pci_dev *pdev = pci_physfn(vf_dev);
1067 struct ice_pf *pf = pci_get_drvdata(pdev);
1068 u16 prev_msix, prev_queues, queues;
1069 bool needs_rebuild = false;
1070 struct ice_vsi *vsi;
1071 struct ice_vf *vf;
1072 int id;
1073
1074 if (!ice_get_num_vfs(pf))
1075 return -ENOENT;
1076
1077 if (!msix_vec_count)
1078 return 0;
1079
1080 queues = msix_vec_count;
1081 /* add 1 MSI-X for OICR */
1082 msix_vec_count += 1;
1083
1084 if (queues > min(ice_get_avail_txq_count(pf),
1085 ice_get_avail_rxq_count(pf)))
1086 return -EINVAL;
1087
1088 if (msix_vec_count < ICE_MIN_INTR_PER_VF)
1089 return -EINVAL;
1090
1091 /* Transition of PCI VF function number to function_id */
1092 for (id = 0; id < pci_num_vf(pdev); id++) {
1093 if (vf_dev->devfn == pci_iov_virtfn_devfn(pdev, id))
1094 break;
1095 }
1096
1097 if (id == pci_num_vf(pdev))
1098 return -ENOENT;
1099
1100 vf = ice_get_vf_by_id(pf, id);
1101
1102 if (!vf)
1103 return -ENOENT;
1104
1105 vsi = ice_get_vf_vsi(vf);
1106 if (!vsi)
1107 return -ENOENT;
1108
1109 prev_msix = vf->num_msix;
1110 prev_queues = vf->num_vf_qs;
1111
1112 if (ice_sriov_move_base_vector(pf, msix_vec_count - prev_msix)) {
1113 ice_put_vf(vf);
1114 return -ENOSPC;
1115 }
1116
1117 ice_dis_vf_mappings(vf);
1118 ice_sriov_free_irqs(pf, vf);
1119
1120 /* Remap all VFs beside the one is now configured */
1121 ice_sriov_remap_vectors(pf, vf->vf_id);
1122
1123 vf->num_msix = msix_vec_count;
1124 vf->num_vf_qs = queues;
1125 vf->first_vector_idx = ice_sriov_get_irqs(pf, vf->num_msix);
1126 if (vf->first_vector_idx < 0)
1127 goto unroll;
1128
1129 if (ice_vf_reconfig_vsi(vf) || ice_vf_init_host_cfg(vf, vsi)) {
1130 /* Try to rebuild with previous values */
1131 needs_rebuild = true;
1132 goto unroll;
1133 }
1134
1135 dev_info(ice_pf_to_dev(pf),
1136 "Changing VF %d resources to %d vectors and %d queues\n",
1137 vf->vf_id, vf->num_msix, vf->num_vf_qs);
1138
1139 ice_ena_vf_mappings(vf);
1140 ice_put_vf(vf);
1141
1142 return 0;
1143
1144unroll:
1145 dev_info(ice_pf_to_dev(pf),
1146 "Can't set %d vectors on VF %d, falling back to %d\n",
1147 vf->num_msix, vf->vf_id, prev_msix);
1148
1149 vf->num_msix = prev_msix;
1150 vf->num_vf_qs = prev_queues;
1151 vf->first_vector_idx = ice_sriov_get_irqs(pf, vf->num_msix);
1152 if (vf->first_vector_idx < 0)
1153 return -EINVAL;
1154
1155 if (needs_rebuild) {
1156 ice_vf_reconfig_vsi(vf);
1157 ice_vf_init_host_cfg(vf, vsi);
1158 }
1159
1160 ice_ena_vf_mappings(vf);
1161 ice_put_vf(vf);
1162
1163 return -EINVAL;
1164}
1165
1166/**
1167 * ice_sriov_configure - Enable or change number of VFs via sysfs
1168 * @pdev: pointer to a pci_dev structure
1169 * @num_vfs: number of VFs to allocate or 0 to free VFs
1170 *
1171 * This function is called when the user updates the number of VFs in sysfs. On
1172 * success return whatever num_vfs was set to by the caller. Return negative on
1173 * failure.
1174 */
1175int ice_sriov_configure(struct pci_dev *pdev, int num_vfs)
1176{
1177 struct ice_pf *pf = pci_get_drvdata(pdev);
1178 struct device *dev = ice_pf_to_dev(pf);
1179 int err;
1180
1181 err = ice_check_sriov_allowed(pf);
1182 if (err)
1183 return err;
1184
1185 if (!num_vfs) {
1186 if (!pci_vfs_assigned(pdev)) {
1187 ice_free_vfs(pf);
1188 return 0;
1189 }
1190
1191 dev_err(dev, "can't free VFs because some are assigned to VMs.\n");
1192 return -EBUSY;
1193 }
1194
1195 err = ice_pci_sriov_ena(pf, num_vfs);
1196 if (err)
1197 return err;
1198
1199 return num_vfs;
1200}
1201
1202/**
1203 * ice_process_vflr_event - Free VF resources via IRQ calls
1204 * @pf: pointer to the PF structure
1205 *
1206 * called from the VFLR IRQ handler to
1207 * free up VF resources and state variables
1208 */
1209void ice_process_vflr_event(struct ice_pf *pf)
1210{
1211 struct ice_hw *hw = &pf->hw;
1212 struct ice_vf *vf;
1213 unsigned int bkt;
1214 u32 reg;
1215
1216 if (!test_and_clear_bit(ICE_VFLR_EVENT_PENDING, pf->state) ||
1217 !ice_has_vfs(pf))
1218 return;
1219
1220 mutex_lock(&pf->vfs.table_lock);
1221 ice_for_each_vf(pf, bkt, vf) {
1222 u32 reg_idx, bit_idx;
1223
1224 reg_idx = (hw->func_caps.vf_base_id + vf->vf_id) / 32;
1225 bit_idx = (hw->func_caps.vf_base_id + vf->vf_id) % 32;
1226 /* read GLGEN_VFLRSTAT register to find out the flr VFs */
1227 reg = rd32(hw, GLGEN_VFLRSTAT(reg_idx));
1228 if (reg & BIT(bit_idx))
1229 /* GLGEN_VFLRSTAT bit will be cleared in ice_reset_vf */
1230 ice_reset_vf(vf, ICE_VF_RESET_VFLR | ICE_VF_RESET_LOCK);
1231 }
1232 mutex_unlock(&pf->vfs.table_lock);
1233}
1234
1235/**
1236 * ice_get_vf_from_pfq - get the VF who owns the PF space queue passed in
1237 * @pf: PF used to index all VFs
1238 * @pfq: queue index relative to the PF's function space
1239 *
1240 * If no VF is found who owns the pfq then return NULL, otherwise return a
1241 * pointer to the VF who owns the pfq
1242 *
1243 * If this function returns non-NULL, it acquires a reference count of the VF
1244 * structure. The caller is responsible for calling ice_put_vf() to drop this
1245 * reference.
1246 */
1247static struct ice_vf *ice_get_vf_from_pfq(struct ice_pf *pf, u16 pfq)
1248{
1249 struct ice_vf *vf;
1250 unsigned int bkt;
1251
1252 rcu_read_lock();
1253 ice_for_each_vf_rcu(pf, bkt, vf) {
1254 struct ice_vsi *vsi;
1255 u16 rxq_idx;
1256
1257 vsi = ice_get_vf_vsi(vf);
1258 if (!vsi)
1259 continue;
1260
1261 ice_for_each_rxq(vsi, rxq_idx)
1262 if (vsi->rxq_map[rxq_idx] == pfq) {
1263 struct ice_vf *found;
1264
1265 if (kref_get_unless_zero(&vf->refcnt))
1266 found = vf;
1267 else
1268 found = NULL;
1269 rcu_read_unlock();
1270 return found;
1271 }
1272 }
1273 rcu_read_unlock();
1274
1275 return NULL;
1276}
1277
1278/**
1279 * ice_globalq_to_pfq - convert from global queue index to PF space queue index
1280 * @pf: PF used for conversion
1281 * @globalq: global queue index used to convert to PF space queue index
1282 */
1283static u32 ice_globalq_to_pfq(struct ice_pf *pf, u32 globalq)
1284{
1285 return globalq - pf->hw.func_caps.common_cap.rxq_first_id;
1286}
1287
1288/**
1289 * ice_vf_lan_overflow_event - handle LAN overflow event for a VF
1290 * @pf: PF that the LAN overflow event happened on
1291 * @event: structure holding the event information for the LAN overflow event
1292 *
1293 * Determine if the LAN overflow event was caused by a VF queue. If it was not
1294 * caused by a VF, do nothing. If a VF caused this LAN overflow event trigger a
1295 * reset on the offending VF.
1296 */
1297void
1298ice_vf_lan_overflow_event(struct ice_pf *pf, struct ice_rq_event_info *event)
1299{
1300 u32 gldcb_rtctq, queue;
1301 struct ice_vf *vf;
1302
1303 gldcb_rtctq = le32_to_cpu(event->desc.params.lan_overflow.prtdcb_ruptq);
1304 dev_dbg(ice_pf_to_dev(pf), "GLDCB_RTCTQ: 0x%08x\n", gldcb_rtctq);
1305
1306 /* event returns device global Rx queue number */
1307 queue = FIELD_GET(GLDCB_RTCTQ_RXQNUM_M, gldcb_rtctq);
1308
1309 vf = ice_get_vf_from_pfq(pf, ice_globalq_to_pfq(pf, queue));
1310 if (!vf)
1311 return;
1312
1313 ice_reset_vf(vf, ICE_VF_RESET_NOTIFY | ICE_VF_RESET_LOCK);
1314 ice_put_vf(vf);
1315}
1316
1317/**
1318 * ice_set_vf_spoofchk
1319 * @netdev: network interface device structure
1320 * @vf_id: VF identifier
1321 * @ena: flag to enable or disable feature
1322 *
1323 * Enable or disable VF spoof checking
1324 */
1325int ice_set_vf_spoofchk(struct net_device *netdev, int vf_id, bool ena)
1326{
1327 struct ice_netdev_priv *np = netdev_priv(netdev);
1328 struct ice_pf *pf = np->vsi->back;
1329 struct ice_vsi *vf_vsi;
1330 struct device *dev;
1331 struct ice_vf *vf;
1332 int ret;
1333
1334 dev = ice_pf_to_dev(pf);
1335
1336 vf = ice_get_vf_by_id(pf, vf_id);
1337 if (!vf)
1338 return -EINVAL;
1339
1340 ret = ice_check_vf_ready_for_cfg(vf);
1341 if (ret)
1342 goto out_put_vf;
1343
1344 vf_vsi = ice_get_vf_vsi(vf);
1345 if (!vf_vsi) {
1346 netdev_err(netdev, "VSI %d for VF %d is null\n",
1347 vf->lan_vsi_idx, vf->vf_id);
1348 ret = -EINVAL;
1349 goto out_put_vf;
1350 }
1351
1352 if (vf_vsi->type != ICE_VSI_VF) {
1353 netdev_err(netdev, "Type %d of VSI %d for VF %d is no ICE_VSI_VF\n",
1354 vf_vsi->type, vf_vsi->vsi_num, vf->vf_id);
1355 ret = -ENODEV;
1356 goto out_put_vf;
1357 }
1358
1359 if (ena == vf->spoofchk) {
1360 dev_dbg(dev, "VF spoofchk already %s\n", ena ? "ON" : "OFF");
1361 ret = 0;
1362 goto out_put_vf;
1363 }
1364
1365 ret = ice_vsi_apply_spoofchk(vf_vsi, ena);
1366 if (ret)
1367 dev_err(dev, "Failed to set spoofchk %s for VF %d VSI %d\n error %d\n",
1368 ena ? "ON" : "OFF", vf->vf_id, vf_vsi->vsi_num, ret);
1369 else
1370 vf->spoofchk = ena;
1371
1372out_put_vf:
1373 ice_put_vf(vf);
1374 return ret;
1375}
1376
1377/**
1378 * ice_get_vf_cfg
1379 * @netdev: network interface device structure
1380 * @vf_id: VF identifier
1381 * @ivi: VF configuration structure
1382 *
1383 * return VF configuration
1384 */
1385int
1386ice_get_vf_cfg(struct net_device *netdev, int vf_id, struct ifla_vf_info *ivi)
1387{
1388 struct ice_pf *pf = ice_netdev_to_pf(netdev);
1389 struct ice_vf *vf;
1390 int ret;
1391
1392 vf = ice_get_vf_by_id(pf, vf_id);
1393 if (!vf)
1394 return -EINVAL;
1395
1396 ret = ice_check_vf_ready_for_cfg(vf);
1397 if (ret)
1398 goto out_put_vf;
1399
1400 ivi->vf = vf_id;
1401 ether_addr_copy(ivi->mac, vf->hw_lan_addr);
1402
1403 /* VF configuration for VLAN and applicable QoS */
1404 ivi->vlan = ice_vf_get_port_vlan_id(vf);
1405 ivi->qos = ice_vf_get_port_vlan_prio(vf);
1406 if (ice_vf_is_port_vlan_ena(vf))
1407 ivi->vlan_proto = cpu_to_be16(ice_vf_get_port_vlan_tpid(vf));
1408
1409 ivi->trusted = vf->trusted;
1410 ivi->spoofchk = vf->spoofchk;
1411 if (!vf->link_forced)
1412 ivi->linkstate = IFLA_VF_LINK_STATE_AUTO;
1413 else if (vf->link_up)
1414 ivi->linkstate = IFLA_VF_LINK_STATE_ENABLE;
1415 else
1416 ivi->linkstate = IFLA_VF_LINK_STATE_DISABLE;
1417 ivi->max_tx_rate = vf->max_tx_rate;
1418 ivi->min_tx_rate = vf->min_tx_rate;
1419
1420out_put_vf:
1421 ice_put_vf(vf);
1422 return ret;
1423}
1424
1425/**
1426 * ice_set_vf_mac
1427 * @netdev: network interface device structure
1428 * @vf_id: VF identifier
1429 * @mac: MAC address
1430 *
1431 * program VF MAC address
1432 */
1433int ice_set_vf_mac(struct net_device *netdev, int vf_id, u8 *mac)
1434{
1435 struct ice_pf *pf = ice_netdev_to_pf(netdev);
1436 struct ice_vf *vf;
1437 int ret;
1438
1439 if (is_multicast_ether_addr(mac)) {
1440 netdev_err(netdev, "%pM not a valid unicast address\n", mac);
1441 return -EINVAL;
1442 }
1443
1444 vf = ice_get_vf_by_id(pf, vf_id);
1445 if (!vf)
1446 return -EINVAL;
1447
1448 /* nothing left to do, unicast MAC already set */
1449 if (ether_addr_equal(vf->dev_lan_addr, mac) &&
1450 ether_addr_equal(vf->hw_lan_addr, mac)) {
1451 ret = 0;
1452 goto out_put_vf;
1453 }
1454
1455 ret = ice_check_vf_ready_for_cfg(vf);
1456 if (ret)
1457 goto out_put_vf;
1458
1459 mutex_lock(&vf->cfg_lock);
1460
1461 /* VF is notified of its new MAC via the PF's response to the
1462 * VIRTCHNL_OP_GET_VF_RESOURCES message after the VF has been reset
1463 */
1464 ether_addr_copy(vf->dev_lan_addr, mac);
1465 ether_addr_copy(vf->hw_lan_addr, mac);
1466 if (is_zero_ether_addr(mac)) {
1467 /* VF will send VIRTCHNL_OP_ADD_ETH_ADDR message with its MAC */
1468 vf->pf_set_mac = false;
1469 netdev_info(netdev, "Removing MAC on VF %d. VF driver will be reinitialized\n",
1470 vf->vf_id);
1471 } else {
1472 /* PF will add MAC rule for the VF */
1473 vf->pf_set_mac = true;
1474 netdev_info(netdev, "Setting MAC %pM on VF %d. VF driver will be reinitialized\n",
1475 mac, vf_id);
1476 }
1477
1478 ice_reset_vf(vf, ICE_VF_RESET_NOTIFY);
1479 mutex_unlock(&vf->cfg_lock);
1480
1481out_put_vf:
1482 ice_put_vf(vf);
1483 return ret;
1484}
1485
1486/**
1487 * ice_set_vf_trust
1488 * @netdev: network interface device structure
1489 * @vf_id: VF identifier
1490 * @trusted: Boolean value to enable/disable trusted VF
1491 *
1492 * Enable or disable a given VF as trusted
1493 */
1494int ice_set_vf_trust(struct net_device *netdev, int vf_id, bool trusted)
1495{
1496 struct ice_pf *pf = ice_netdev_to_pf(netdev);
1497 struct ice_vf *vf;
1498 int ret;
1499
1500 vf = ice_get_vf_by_id(pf, vf_id);
1501 if (!vf)
1502 return -EINVAL;
1503
1504 if (ice_is_eswitch_mode_switchdev(pf)) {
1505 dev_info(ice_pf_to_dev(pf), "Trusted VF is forbidden in switchdev mode\n");
1506 return -EOPNOTSUPP;
1507 }
1508
1509 ret = ice_check_vf_ready_for_cfg(vf);
1510 if (ret)
1511 goto out_put_vf;
1512
1513 /* Check if already trusted */
1514 if (trusted == vf->trusted) {
1515 ret = 0;
1516 goto out_put_vf;
1517 }
1518
1519 mutex_lock(&vf->cfg_lock);
1520
1521 vf->trusted = trusted;
1522 ice_reset_vf(vf, ICE_VF_RESET_NOTIFY);
1523 dev_info(ice_pf_to_dev(pf), "VF %u is now %strusted\n",
1524 vf_id, trusted ? "" : "un");
1525
1526 mutex_unlock(&vf->cfg_lock);
1527
1528out_put_vf:
1529 ice_put_vf(vf);
1530 return ret;
1531}
1532
1533/**
1534 * ice_set_vf_link_state
1535 * @netdev: network interface device structure
1536 * @vf_id: VF identifier
1537 * @link_state: required link state
1538 *
1539 * Set VF's link state, irrespective of physical link state status
1540 */
1541int ice_set_vf_link_state(struct net_device *netdev, int vf_id, int link_state)
1542{
1543 struct ice_pf *pf = ice_netdev_to_pf(netdev);
1544 struct ice_vf *vf;
1545 int ret;
1546
1547 vf = ice_get_vf_by_id(pf, vf_id);
1548 if (!vf)
1549 return -EINVAL;
1550
1551 ret = ice_check_vf_ready_for_cfg(vf);
1552 if (ret)
1553 goto out_put_vf;
1554
1555 switch (link_state) {
1556 case IFLA_VF_LINK_STATE_AUTO:
1557 vf->link_forced = false;
1558 break;
1559 case IFLA_VF_LINK_STATE_ENABLE:
1560 vf->link_forced = true;
1561 vf->link_up = true;
1562 break;
1563 case IFLA_VF_LINK_STATE_DISABLE:
1564 vf->link_forced = true;
1565 vf->link_up = false;
1566 break;
1567 default:
1568 ret = -EINVAL;
1569 goto out_put_vf;
1570 }
1571
1572 ice_vc_notify_vf_link_state(vf);
1573
1574out_put_vf:
1575 ice_put_vf(vf);
1576 return ret;
1577}
1578
1579/**
1580 * ice_calc_all_vfs_min_tx_rate - calculate cumulative min Tx rate on all VFs
1581 * @pf: PF associated with VFs
1582 */
1583static int ice_calc_all_vfs_min_tx_rate(struct ice_pf *pf)
1584{
1585 struct ice_vf *vf;
1586 unsigned int bkt;
1587 int rate = 0;
1588
1589 rcu_read_lock();
1590 ice_for_each_vf_rcu(pf, bkt, vf)
1591 rate += vf->min_tx_rate;
1592 rcu_read_unlock();
1593
1594 return rate;
1595}
1596
1597/**
1598 * ice_min_tx_rate_oversubscribed - check if min Tx rate causes oversubscription
1599 * @vf: VF trying to configure min_tx_rate
1600 * @min_tx_rate: min Tx rate in Mbps
1601 *
1602 * Check if the min_tx_rate being passed in will cause oversubscription of total
1603 * min_tx_rate based on the current link speed and all other VFs configured
1604 * min_tx_rate
1605 *
1606 * Return true if the passed min_tx_rate would cause oversubscription, else
1607 * return false
1608 */
1609static bool
1610ice_min_tx_rate_oversubscribed(struct ice_vf *vf, int min_tx_rate)
1611{
1612 struct ice_vsi *vsi = ice_get_vf_vsi(vf);
1613 int all_vfs_min_tx_rate;
1614 int link_speed_mbps;
1615
1616 if (WARN_ON(!vsi))
1617 return false;
1618
1619 link_speed_mbps = ice_get_link_speed_mbps(vsi);
1620 all_vfs_min_tx_rate = ice_calc_all_vfs_min_tx_rate(vf->pf);
1621
1622 /* this VF's previous rate is being overwritten */
1623 all_vfs_min_tx_rate -= vf->min_tx_rate;
1624
1625 if (all_vfs_min_tx_rate + min_tx_rate > link_speed_mbps) {
1626 dev_err(ice_pf_to_dev(vf->pf), "min_tx_rate of %d Mbps on VF %u would cause oversubscription of %d Mbps based on the current link speed %d Mbps\n",
1627 min_tx_rate, vf->vf_id,
1628 all_vfs_min_tx_rate + min_tx_rate - link_speed_mbps,
1629 link_speed_mbps);
1630 return true;
1631 }
1632
1633 return false;
1634}
1635
1636/**
1637 * ice_set_vf_bw - set min/max VF bandwidth
1638 * @netdev: network interface device structure
1639 * @vf_id: VF identifier
1640 * @min_tx_rate: Minimum Tx rate in Mbps
1641 * @max_tx_rate: Maximum Tx rate in Mbps
1642 */
1643int
1644ice_set_vf_bw(struct net_device *netdev, int vf_id, int min_tx_rate,
1645 int max_tx_rate)
1646{
1647 struct ice_pf *pf = ice_netdev_to_pf(netdev);
1648 struct ice_vsi *vsi;
1649 struct device *dev;
1650 struct ice_vf *vf;
1651 int ret;
1652
1653 dev = ice_pf_to_dev(pf);
1654
1655 vf = ice_get_vf_by_id(pf, vf_id);
1656 if (!vf)
1657 return -EINVAL;
1658
1659 ret = ice_check_vf_ready_for_cfg(vf);
1660 if (ret)
1661 goto out_put_vf;
1662
1663 vsi = ice_get_vf_vsi(vf);
1664 if (!vsi) {
1665 ret = -EINVAL;
1666 goto out_put_vf;
1667 }
1668
1669 if (min_tx_rate && ice_is_dcb_active(pf)) {
1670 dev_err(dev, "DCB on PF is currently enabled. VF min Tx rate limiting not allowed on this PF.\n");
1671 ret = -EOPNOTSUPP;
1672 goto out_put_vf;
1673 }
1674
1675 if (ice_min_tx_rate_oversubscribed(vf, min_tx_rate)) {
1676 ret = -EINVAL;
1677 goto out_put_vf;
1678 }
1679
1680 if (vf->min_tx_rate != (unsigned int)min_tx_rate) {
1681 ret = ice_set_min_bw_limit(vsi, (u64)min_tx_rate * 1000);
1682 if (ret) {
1683 dev_err(dev, "Unable to set min-tx-rate for VF %d\n",
1684 vf->vf_id);
1685 goto out_put_vf;
1686 }
1687
1688 vf->min_tx_rate = min_tx_rate;
1689 }
1690
1691 if (vf->max_tx_rate != (unsigned int)max_tx_rate) {
1692 ret = ice_set_max_bw_limit(vsi, (u64)max_tx_rate * 1000);
1693 if (ret) {
1694 dev_err(dev, "Unable to set max-tx-rate for VF %d\n",
1695 vf->vf_id);
1696 goto out_put_vf;
1697 }
1698
1699 vf->max_tx_rate = max_tx_rate;
1700 }
1701
1702out_put_vf:
1703 ice_put_vf(vf);
1704 return ret;
1705}
1706
1707/**
1708 * ice_get_vf_stats - populate some stats for the VF
1709 * @netdev: the netdev of the PF
1710 * @vf_id: the host OS identifier (0-255)
1711 * @vf_stats: pointer to the OS memory to be initialized
1712 */
1713int ice_get_vf_stats(struct net_device *netdev, int vf_id,
1714 struct ifla_vf_stats *vf_stats)
1715{
1716 struct ice_pf *pf = ice_netdev_to_pf(netdev);
1717 struct ice_eth_stats *stats;
1718 struct ice_vsi *vsi;
1719 struct ice_vf *vf;
1720 int ret;
1721
1722 vf = ice_get_vf_by_id(pf, vf_id);
1723 if (!vf)
1724 return -EINVAL;
1725
1726 ret = ice_check_vf_ready_for_cfg(vf);
1727 if (ret)
1728 goto out_put_vf;
1729
1730 vsi = ice_get_vf_vsi(vf);
1731 if (!vsi) {
1732 ret = -EINVAL;
1733 goto out_put_vf;
1734 }
1735
1736 ice_update_eth_stats(vsi);
1737 stats = &vsi->eth_stats;
1738
1739 memset(vf_stats, 0, sizeof(*vf_stats));
1740
1741 vf_stats->rx_packets = stats->rx_unicast + stats->rx_broadcast +
1742 stats->rx_multicast;
1743 vf_stats->tx_packets = stats->tx_unicast + stats->tx_broadcast +
1744 stats->tx_multicast;
1745 vf_stats->rx_bytes = stats->rx_bytes;
1746 vf_stats->tx_bytes = stats->tx_bytes;
1747 vf_stats->broadcast = stats->rx_broadcast;
1748 vf_stats->multicast = stats->rx_multicast;
1749 vf_stats->rx_dropped = stats->rx_discards;
1750 vf_stats->tx_dropped = stats->tx_discards;
1751
1752out_put_vf:
1753 ice_put_vf(vf);
1754 return ret;
1755}
1756
1757/**
1758 * ice_is_supported_port_vlan_proto - make sure the vlan_proto is supported
1759 * @hw: hardware structure used to check the VLAN mode
1760 * @vlan_proto: VLAN TPID being checked
1761 *
1762 * If the device is configured in Double VLAN Mode (DVM), then both ETH_P_8021Q
1763 * and ETH_P_8021AD are supported. If the device is configured in Single VLAN
1764 * Mode (SVM), then only ETH_P_8021Q is supported.
1765 */
1766static bool
1767ice_is_supported_port_vlan_proto(struct ice_hw *hw, u16 vlan_proto)
1768{
1769 bool is_supported = false;
1770
1771 switch (vlan_proto) {
1772 case ETH_P_8021Q:
1773 is_supported = true;
1774 break;
1775 case ETH_P_8021AD:
1776 if (ice_is_dvm_ena(hw))
1777 is_supported = true;
1778 break;
1779 }
1780
1781 return is_supported;
1782}
1783
1784/**
1785 * ice_set_vf_port_vlan
1786 * @netdev: network interface device structure
1787 * @vf_id: VF identifier
1788 * @vlan_id: VLAN ID being set
1789 * @qos: priority setting
1790 * @vlan_proto: VLAN protocol
1791 *
1792 * program VF Port VLAN ID and/or QoS
1793 */
1794int
1795ice_set_vf_port_vlan(struct net_device *netdev, int vf_id, u16 vlan_id, u8 qos,
1796 __be16 vlan_proto)
1797{
1798 struct ice_pf *pf = ice_netdev_to_pf(netdev);
1799 u16 local_vlan_proto = ntohs(vlan_proto);
1800 struct device *dev;
1801 struct ice_vf *vf;
1802 int ret;
1803
1804 dev = ice_pf_to_dev(pf);
1805
1806 if (vlan_id >= VLAN_N_VID || qos > 7) {
1807 dev_err(dev, "Invalid Port VLAN parameters for VF %d, ID %d, QoS %d\n",
1808 vf_id, vlan_id, qos);
1809 return -EINVAL;
1810 }
1811
1812 if (!ice_is_supported_port_vlan_proto(&pf->hw, local_vlan_proto)) {
1813 dev_err(dev, "VF VLAN protocol 0x%04x is not supported\n",
1814 local_vlan_proto);
1815 return -EPROTONOSUPPORT;
1816 }
1817
1818 vf = ice_get_vf_by_id(pf, vf_id);
1819 if (!vf)
1820 return -EINVAL;
1821
1822 ret = ice_check_vf_ready_for_cfg(vf);
1823 if (ret)
1824 goto out_put_vf;
1825
1826 if (ice_vf_get_port_vlan_prio(vf) == qos &&
1827 ice_vf_get_port_vlan_tpid(vf) == local_vlan_proto &&
1828 ice_vf_get_port_vlan_id(vf) == vlan_id) {
1829 /* duplicate request, so just return success */
1830 dev_dbg(dev, "Duplicate port VLAN %u, QoS %u, TPID 0x%04x request\n",
1831 vlan_id, qos, local_vlan_proto);
1832 ret = 0;
1833 goto out_put_vf;
1834 }
1835
1836 mutex_lock(&vf->cfg_lock);
1837
1838 vf->port_vlan_info = ICE_VLAN(local_vlan_proto, vlan_id, qos);
1839 if (ice_vf_is_port_vlan_ena(vf))
1840 dev_info(dev, "Setting VLAN %u, QoS %u, TPID 0x%04x on VF %d\n",
1841 vlan_id, qos, local_vlan_proto, vf_id);
1842 else
1843 dev_info(dev, "Clearing port VLAN on VF %d\n", vf_id);
1844
1845 ice_reset_vf(vf, ICE_VF_RESET_NOTIFY);
1846 mutex_unlock(&vf->cfg_lock);
1847
1848out_put_vf:
1849 ice_put_vf(vf);
1850 return ret;
1851}
1852
1853/**
1854 * ice_print_vf_rx_mdd_event - print VF Rx malicious driver detect event
1855 * @vf: pointer to the VF structure
1856 */
1857void ice_print_vf_rx_mdd_event(struct ice_vf *vf)
1858{
1859 struct ice_pf *pf = vf->pf;
1860 struct device *dev;
1861
1862 dev = ice_pf_to_dev(pf);
1863
1864 dev_info(dev, "%d Rx Malicious Driver Detection events detected on PF %d VF %d MAC %pM. mdd-auto-reset-vfs=%s\n",
1865 vf->mdd_rx_events.count, pf->hw.pf_id, vf->vf_id,
1866 vf->dev_lan_addr,
1867 test_bit(ICE_FLAG_MDD_AUTO_RESET_VF, pf->flags)
1868 ? "on" : "off");
1869}
1870
1871/**
1872 * ice_print_vfs_mdd_events - print VFs malicious driver detect event
1873 * @pf: pointer to the PF structure
1874 *
1875 * Called from ice_handle_mdd_event to rate limit and print VFs MDD events.
1876 */
1877void ice_print_vfs_mdd_events(struct ice_pf *pf)
1878{
1879 struct device *dev = ice_pf_to_dev(pf);
1880 struct ice_hw *hw = &pf->hw;
1881 struct ice_vf *vf;
1882 unsigned int bkt;
1883
1884 /* check that there are pending MDD events to print */
1885 if (!test_and_clear_bit(ICE_MDD_VF_PRINT_PENDING, pf->state))
1886 return;
1887
1888 /* VF MDD event logs are rate limited to one second intervals */
1889 if (time_is_after_jiffies(pf->vfs.last_printed_mdd_jiffies + HZ * 1))
1890 return;
1891
1892 pf->vfs.last_printed_mdd_jiffies = jiffies;
1893
1894 mutex_lock(&pf->vfs.table_lock);
1895 ice_for_each_vf(pf, bkt, vf) {
1896 /* only print Rx MDD event message if there are new events */
1897 if (vf->mdd_rx_events.count != vf->mdd_rx_events.last_printed) {
1898 vf->mdd_rx_events.last_printed =
1899 vf->mdd_rx_events.count;
1900 ice_print_vf_rx_mdd_event(vf);
1901 }
1902
1903 /* only print Tx MDD event message if there are new events */
1904 if (vf->mdd_tx_events.count != vf->mdd_tx_events.last_printed) {
1905 vf->mdd_tx_events.last_printed =
1906 vf->mdd_tx_events.count;
1907
1908 dev_info(dev, "%d Tx Malicious Driver Detection events detected on PF %d VF %d MAC %pM.\n",
1909 vf->mdd_tx_events.count, hw->pf_id, vf->vf_id,
1910 vf->dev_lan_addr);
1911 }
1912 }
1913 mutex_unlock(&pf->vfs.table_lock);
1914}
1915
1916/**
1917 * ice_restore_all_vfs_msi_state - restore VF MSI state after PF FLR
1918 * @pf: pointer to the PF structure
1919 *
1920 * Called when recovering from a PF FLR to restore interrupt capability to
1921 * the VFs.
1922 */
1923void ice_restore_all_vfs_msi_state(struct ice_pf *pf)
1924{
1925 struct ice_vf *vf;
1926 u32 bkt;
1927
1928 ice_for_each_vf(pf, bkt, vf)
1929 pci_restore_msi_state(vf->vfdev);
1930}