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ddf30f7f AV |
1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* Copyright (c) 2018, Intel Corporation. */ | |
3 | ||
4 | #include "ice.h" | |
109aba47 | 5 | #include "ice_vf_lib_private.h" |
eff380aa | 6 | #include "ice_base.h" |
ddf30f7f | 7 | #include "ice_lib.h" |
1b8f15b6 | 8 | #include "ice_fltr.h" |
4ecc8633 | 9 | #include "ice_dcb_lib.h" |
222a8ab0 | 10 | #include "ice_flow.h" |
1c54c839 | 11 | #include "ice_eswitch.h" |
c0dcaa55 | 12 | #include "ice_virtchnl_allowlist.h" |
60f44fe4 | 13 | #include "ice_flex_pipe.h" |
c31af68a | 14 | #include "ice_vf_vsi_vlan_ops.h" |
cc71de8f | 15 | #include "ice_vlan.h" |
ddf30f7f | 16 | |
3d5985a1 JK |
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 | */ | |
24 | static 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 | ||
3726cce2 BC |
43 | /** |
44 | * ice_vf_vsi_release - invalidate the VF's VSI after freeing it | |
45 | * @vf: invalidate this VF's VSI after freeing it | |
46 | */ | |
47 | static void ice_vf_vsi_release(struct ice_vf *vf) | |
48 | { | |
c5afbe99 | 49 | ice_vsi_release(ice_get_vf_vsi(vf)); |
3726cce2 BC |
50 | ice_vf_invalidate_vsi(vf); |
51 | } | |
52 | ||
ddf30f7f AV |
53 | /** |
54 | * ice_free_vf_res - Free a VF's resources | |
55 | * @vf: pointer to the VF info | |
56 | */ | |
57 | static void ice_free_vf_res(struct ice_vf *vf) | |
58 | { | |
59 | struct ice_pf *pf = vf->pf; | |
72ecb896 | 60 | int i, last_vector_idx; |
ddf30f7f AV |
61 | |
62 | /* First, disable VF's configuration API to prevent OS from | |
63 | * accessing the VF's VSI after it's freed or invalidated. | |
64 | */ | |
65 | clear_bit(ICE_VF_STATE_INIT, vf->vf_states); | |
1f7ea1cd | 66 | ice_vf_fdir_exit(vf); |
da62c5ff QZ |
67 | /* free VF control VSI */ |
68 | if (vf->ctrl_vsi_idx != ICE_NO_VSI) | |
69 | ice_vf_ctrl_vsi_release(vf); | |
ddf30f7f | 70 | |
2f2da36e | 71 | /* free VSI and disconnect it from the parent uplink */ |
3726cce2 BC |
72 | if (vf->lan_vsi_idx != ICE_NO_VSI) { |
73 | ice_vf_vsi_release(vf); | |
ddf30f7f AV |
74 | vf->num_mac = 0; |
75 | } | |
76 | ||
000773c0 | 77 | last_vector_idx = vf->first_vector_idx + pf->vfs.num_msix_per - 1; |
9d5c5a52 PG |
78 | |
79 | /* clear VF MDD event information */ | |
80 | memset(&vf->mdd_tx_events, 0, sizeof(vf->mdd_tx_events)); | |
81 | memset(&vf->mdd_rx_events, 0, sizeof(vf->mdd_rx_events)); | |
82 | ||
ddf30f7f | 83 | /* Disable interrupts so that VF starts in a known state */ |
72ecb896 BC |
84 | for (i = vf->first_vector_idx; i <= last_vector_idx; i++) { |
85 | wr32(&pf->hw, GLINT_DYN_CTL(i), GLINT_DYN_CTL_CLEARPBA_M); | |
ddf30f7f AV |
86 | ice_flush(&pf->hw); |
87 | } | |
88 | /* reset some of the state variables keeping track of the resources */ | |
89 | clear_bit(ICE_VF_STATE_MC_PROMISC, vf->vf_states); | |
90 | clear_bit(ICE_VF_STATE_UC_PROMISC, vf->vf_states); | |
91 | } | |
92 | ||
ddf30f7f AV |
93 | /** |
94 | * ice_dis_vf_mappings | |
95 | * @vf: pointer to the VF structure | |
96 | */ | |
97 | static void ice_dis_vf_mappings(struct ice_vf *vf) | |
98 | { | |
99 | struct ice_pf *pf = vf->pf; | |
100 | struct ice_vsi *vsi; | |
4015d11e | 101 | struct device *dev; |
ddf30f7f AV |
102 | int first, last, v; |
103 | struct ice_hw *hw; | |
104 | ||
105 | hw = &pf->hw; | |
c5afbe99 | 106 | vsi = ice_get_vf_vsi(vf); |
ddf30f7f | 107 | |
4015d11e | 108 | dev = ice_pf_to_dev(pf); |
ddf30f7f | 109 | wr32(hw, VPINT_ALLOC(vf->vf_id), 0); |
982b1219 | 110 | wr32(hw, VPINT_ALLOC_PCI(vf->vf_id), 0); |
ddf30f7f | 111 | |
cbe66bfe | 112 | first = vf->first_vector_idx; |
000773c0 | 113 | last = first + pf->vfs.num_msix_per - 1; |
ddf30f7f AV |
114 | for (v = first; v <= last; v++) { |
115 | u32 reg; | |
116 | ||
117 | reg = (((1 << GLINT_VECT2FUNC_IS_PF_S) & | |
118 | GLINT_VECT2FUNC_IS_PF_M) | | |
119 | ((hw->pf_id << GLINT_VECT2FUNC_PF_NUM_S) & | |
120 | GLINT_VECT2FUNC_PF_NUM_M)); | |
121 | wr32(hw, GLINT_VECT2FUNC(v), reg); | |
122 | } | |
123 | ||
124 | if (vsi->tx_mapping_mode == ICE_VSI_MAP_CONTIG) | |
125 | wr32(hw, VPLAN_TX_QBASE(vf->vf_id), 0); | |
126 | else | |
4015d11e | 127 | dev_err(dev, "Scattered mode for VF Tx queues is not yet implemented\n"); |
ddf30f7f AV |
128 | |
129 | if (vsi->rx_mapping_mode == ICE_VSI_MAP_CONTIG) | |
130 | wr32(hw, VPLAN_RX_QBASE(vf->vf_id), 0); | |
131 | else | |
19cce2c6 | 132 | dev_err(dev, "Scattered mode for VF Rx queues is not yet implemented\n"); |
ddf30f7f AV |
133 | } |
134 | ||
cbe66bfe BC |
135 | /** |
136 | * ice_sriov_free_msix_res - Reset/free any used MSIX resources | |
137 | * @pf: pointer to the PF structure | |
138 | * | |
0ca469fb | 139 | * Since no MSIX entries are taken from the pf->irq_tracker then just clear |
cbe66bfe BC |
140 | * the pf->sriov_base_vector. |
141 | * | |
142 | * Returns 0 on success, and -EINVAL on error. | |
143 | */ | |
144 | static int ice_sriov_free_msix_res(struct ice_pf *pf) | |
145 | { | |
146 | struct ice_res_tracker *res; | |
147 | ||
148 | if (!pf) | |
149 | return -EINVAL; | |
150 | ||
151 | res = pf->irq_tracker; | |
152 | if (!res) | |
153 | return -EINVAL; | |
154 | ||
155 | /* give back irq_tracker resources used */ | |
0ca469fb | 156 | WARN_ON(pf->sriov_base_vector < res->num_entries); |
cbe66bfe BC |
157 | |
158 | pf->sriov_base_vector = 0; | |
159 | ||
160 | return 0; | |
161 | } | |
162 | ||
ddf30f7f AV |
163 | /** |
164 | * ice_free_vfs - Free all VFs | |
165 | * @pf: pointer to the PF structure | |
166 | */ | |
167 | void ice_free_vfs(struct ice_pf *pf) | |
168 | { | |
4015d11e | 169 | struct device *dev = ice_pf_to_dev(pf); |
000773c0 | 170 | struct ice_vfs *vfs = &pf->vfs; |
ddf30f7f | 171 | struct ice_hw *hw = &pf->hw; |
c4c2c7db JK |
172 | struct ice_vf *vf; |
173 | unsigned int bkt; | |
ddf30f7f | 174 | |
fb916db1 | 175 | if (!ice_has_vfs(pf)) |
ddf30f7f AV |
176 | return; |
177 | ||
7e408e07 | 178 | while (test_and_set_bit(ICE_VF_DIS, pf->state)) |
ddf30f7f AV |
179 | usleep_range(1000, 2000); |
180 | ||
72ecb896 BC |
181 | /* Disable IOV before freeing resources. This lets any VF drivers |
182 | * running in the host get themselves cleaned up before we yank | |
183 | * the carpet out from underneath their feet. | |
184 | */ | |
185 | if (!pci_vfs_assigned(pf->pdev)) | |
186 | pci_disable_sriov(pf->pdev); | |
187 | else | |
4015d11e | 188 | dev_warn(dev, "VFs are assigned - not disabling SR-IOV\n"); |
72ecb896 | 189 | |
3d5985a1 JK |
190 | mutex_lock(&vfs->table_lock); |
191 | ||
192 | ice_eswitch_release(pf); | |
193 | ||
c4c2c7db | 194 | ice_for_each_vf(pf, bkt, vf) { |
fadead80 JK |
195 | mutex_lock(&vf->cfg_lock); |
196 | ||
197 | ice_dis_vf_qs(vf); | |
198 | ||
199 | if (test_bit(ICE_VF_STATE_INIT, vf->vf_states)) { | |
1f9639d2 | 200 | /* disable VF qp mappings and set VF disable state */ |
fadead80 JK |
201 | ice_dis_vf_mappings(vf); |
202 | set_bit(ICE_VF_STATE_DIS, vf->vf_states); | |
203 | ice_free_vf_res(vf); | |
ddf30f7f | 204 | } |
e6ba5273 | 205 | |
44efe75f JK |
206 | if (!pci_vfs_assigned(pf->pdev)) { |
207 | u32 reg_idx, bit_idx; | |
208 | ||
209 | reg_idx = (hw->func_caps.vf_base_id + vf->vf_id) / 32; | |
210 | bit_idx = (hw->func_caps.vf_base_id + vf->vf_id) % 32; | |
211 | wr32(hw, GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx)); | |
212 | } | |
213 | ||
294627a6 | 214 | /* clear malicious info since the VF is getting released */ |
000773c0 | 215 | if (ice_mbx_clear_malvf(&hw->mbx_snapshot, pf->vfs.malvfs, |
dc36796e | 216 | ICE_MAX_SRIOV_VFS, vf->vf_id)) |
294627a6 JK |
217 | dev_dbg(dev, "failed to clear malicious VF state for VF %u\n", |
218 | vf->vf_id); | |
219 | ||
fadead80 | 220 | mutex_unlock(&vf->cfg_lock); |
ddf30f7f AV |
221 | } |
222 | ||
cbe66bfe | 223 | if (ice_sriov_free_msix_res(pf)) |
4015d11e | 224 | dev_err(dev, "Failed to free MSIX resources used by SR-IOV\n"); |
cbe66bfe | 225 | |
000773c0 | 226 | vfs->num_qps_per = 0; |
3d5985a1 JK |
227 | ice_free_vf_entries(pf); |
228 | ||
229 | mutex_unlock(&vfs->table_lock); | |
ddf30f7f | 230 | |
7e408e07 | 231 | clear_bit(ICE_VF_DIS, pf->state); |
ddf30f7f AV |
232 | clear_bit(ICE_FLAG_SRIOV_ENA, pf->flags); |
233 | } | |
234 | ||
ddf30f7f AV |
235 | /** |
236 | * ice_vf_vsi_setup - Set up a VF VSI | |
3726cce2 | 237 | * @vf: VF to setup VSI for |
ddf30f7f AV |
238 | * |
239 | * Returns pointer to the successfully allocated VSI struct on success, | |
240 | * otherwise returns NULL on failure. | |
241 | */ | |
3726cce2 | 242 | static struct ice_vsi *ice_vf_vsi_setup(struct ice_vf *vf) |
ddf30f7f | 243 | { |
3726cce2 BC |
244 | struct ice_port_info *pi = ice_vf_get_port_info(vf); |
245 | struct ice_pf *pf = vf->pf; | |
246 | struct ice_vsi *vsi; | |
247 | ||
b03d519d | 248 | vsi = ice_vsi_setup(pf, pi, ICE_VSI_VF, vf, NULL); |
3726cce2 BC |
249 | |
250 | if (!vsi) { | |
251 | dev_err(ice_pf_to_dev(pf), "Failed to create VF VSI\n"); | |
252 | ice_vf_invalidate_vsi(vf); | |
253 | return NULL; | |
254 | } | |
255 | ||
256 | vf->lan_vsi_idx = vsi->idx; | |
257 | vf->lan_vsi_num = vsi->vsi_num; | |
258 | ||
259 | return vsi; | |
ddf30f7f AV |
260 | } |
261 | ||
cbe66bfe | 262 | /** |
1337175d | 263 | * ice_calc_vf_first_vector_idx - Calculate MSIX vector index in the PF space |
cbe66bfe BC |
264 | * @pf: pointer to PF structure |
265 | * @vf: pointer to VF that the first MSIX vector index is being calculated for | |
266 | * | |
1337175d PG |
267 | * This returns the first MSIX vector index in PF space that is used by this VF. |
268 | * This index is used when accessing PF relative registers such as | |
269 | * GLINT_VECT2FUNC and GLINT_DYN_CTL. | |
270 | * This will always be the OICR index in the AVF driver so any functionality | |
cbe66bfe BC |
271 | * using vf->first_vector_idx for queue configuration will have to increment by |
272 | * 1 to avoid meddling with the OICR index. | |
273 | */ | |
274 | static int ice_calc_vf_first_vector_idx(struct ice_pf *pf, struct ice_vf *vf) | |
275 | { | |
000773c0 | 276 | return pf->sriov_base_vector + vf->vf_id * pf->vfs.num_msix_per; |
cbe66bfe BC |
277 | } |
278 | ||
ddf30f7f | 279 | /** |
ac371613 BC |
280 | * ice_ena_vf_msix_mappings - enable VF MSIX mappings in hardware |
281 | * @vf: VF to enable MSIX mappings for | |
ddf30f7f | 282 | * |
ac371613 BC |
283 | * Some of the registers need to be indexed/configured using hardware global |
284 | * device values and other registers need 0-based values, which represent PF | |
285 | * based values. | |
ddf30f7f | 286 | */ |
ac371613 | 287 | static void ice_ena_vf_msix_mappings(struct ice_vf *vf) |
ddf30f7f | 288 | { |
ac371613 BC |
289 | int device_based_first_msix, device_based_last_msix; |
290 | int pf_based_first_msix, pf_based_last_msix, v; | |
ddf30f7f | 291 | struct ice_pf *pf = vf->pf; |
ac371613 | 292 | int device_based_vf_id; |
ddf30f7f | 293 | struct ice_hw *hw; |
ddf30f7f AV |
294 | u32 reg; |
295 | ||
296 | hw = &pf->hw; | |
ac371613 | 297 | pf_based_first_msix = vf->first_vector_idx; |
000773c0 | 298 | pf_based_last_msix = (pf_based_first_msix + pf->vfs.num_msix_per) - 1; |
ac371613 BC |
299 | |
300 | device_based_first_msix = pf_based_first_msix + | |
301 | pf->hw.func_caps.common_cap.msix_vector_first_id; | |
302 | device_based_last_msix = | |
000773c0 | 303 | (device_based_first_msix + pf->vfs.num_msix_per) - 1; |
ac371613 BC |
304 | device_based_vf_id = vf->vf_id + hw->func_caps.vf_base_id; |
305 | ||
306 | reg = (((device_based_first_msix << VPINT_ALLOC_FIRST_S) & | |
307 | VPINT_ALLOC_FIRST_M) | | |
308 | ((device_based_last_msix << VPINT_ALLOC_LAST_S) & | |
309 | VPINT_ALLOC_LAST_M) | VPINT_ALLOC_VALID_M); | |
ddf30f7f AV |
310 | wr32(hw, VPINT_ALLOC(vf->vf_id), reg); |
311 | ||
ac371613 | 312 | reg = (((device_based_first_msix << VPINT_ALLOC_PCI_FIRST_S) |
1337175d | 313 | & VPINT_ALLOC_PCI_FIRST_M) | |
ac371613 BC |
314 | ((device_based_last_msix << VPINT_ALLOC_PCI_LAST_S) & |
315 | VPINT_ALLOC_PCI_LAST_M) | VPINT_ALLOC_PCI_VALID_M); | |
982b1219 | 316 | wr32(hw, VPINT_ALLOC_PCI(vf->vf_id), reg); |
ac371613 | 317 | |
ddf30f7f | 318 | /* map the interrupts to its functions */ |
ac371613 BC |
319 | for (v = pf_based_first_msix; v <= pf_based_last_msix; v++) { |
320 | reg = (((device_based_vf_id << GLINT_VECT2FUNC_VF_NUM_S) & | |
ddf30f7f AV |
321 | GLINT_VECT2FUNC_VF_NUM_M) | |
322 | ((hw->pf_id << GLINT_VECT2FUNC_PF_NUM_S) & | |
323 | GLINT_VECT2FUNC_PF_NUM_M)); | |
324 | wr32(hw, GLINT_VECT2FUNC(v), reg); | |
325 | } | |
326 | ||
ac371613 BC |
327 | /* Map mailbox interrupt to VF MSI-X vector 0 */ |
328 | wr32(hw, VPINT_MBX_CTL(device_based_vf_id), VPINT_MBX_CTL_CAUSE_ENA_M); | |
329 | } | |
330 | ||
331 | /** | |
332 | * ice_ena_vf_q_mappings - enable Rx/Tx queue mappings for a VF | |
333 | * @vf: VF to enable the mappings for | |
334 | * @max_txq: max Tx queues allowed on the VF's VSI | |
335 | * @max_rxq: max Rx queues allowed on the VF's VSI | |
336 | */ | |
337 | static void ice_ena_vf_q_mappings(struct ice_vf *vf, u16 max_txq, u16 max_rxq) | |
338 | { | |
ac371613 | 339 | struct device *dev = ice_pf_to_dev(vf->pf); |
c5afbe99 | 340 | struct ice_vsi *vsi = ice_get_vf_vsi(vf); |
ac371613 BC |
341 | struct ice_hw *hw = &vf->pf->hw; |
342 | u32 reg; | |
343 | ||
982b1219 AV |
344 | /* set regardless of mapping mode */ |
345 | wr32(hw, VPLAN_TXQ_MAPENA(vf->vf_id), VPLAN_TXQ_MAPENA_TX_ENA_M); | |
346 | ||
ddf30f7f AV |
347 | /* VF Tx queues allocation */ |
348 | if (vsi->tx_mapping_mode == ICE_VSI_MAP_CONTIG) { | |
ddf30f7f AV |
349 | /* set the VF PF Tx queue range |
350 | * VFNUMQ value should be set to (number of queues - 1). A value | |
351 | * of 0 means 1 queue and a value of 255 means 256 queues | |
352 | */ | |
353 | reg = (((vsi->txq_map[0] << VPLAN_TX_QBASE_VFFIRSTQ_S) & | |
354 | VPLAN_TX_QBASE_VFFIRSTQ_M) | | |
ac371613 | 355 | (((max_txq - 1) << VPLAN_TX_QBASE_VFNUMQ_S) & |
ddf30f7f AV |
356 | VPLAN_TX_QBASE_VFNUMQ_M)); |
357 | wr32(hw, VPLAN_TX_QBASE(vf->vf_id), reg); | |
358 | } else { | |
4015d11e | 359 | dev_err(dev, "Scattered mode for VF Tx queues is not yet implemented\n"); |
ddf30f7f AV |
360 | } |
361 | ||
982b1219 AV |
362 | /* set regardless of mapping mode */ |
363 | wr32(hw, VPLAN_RXQ_MAPENA(vf->vf_id), VPLAN_RXQ_MAPENA_RX_ENA_M); | |
364 | ||
ddf30f7f AV |
365 | /* VF Rx queues allocation */ |
366 | if (vsi->rx_mapping_mode == ICE_VSI_MAP_CONTIG) { | |
ddf30f7f AV |
367 | /* set the VF PF Rx queue range |
368 | * VFNUMQ value should be set to (number of queues - 1). A value | |
369 | * of 0 means 1 queue and a value of 255 means 256 queues | |
370 | */ | |
371 | reg = (((vsi->rxq_map[0] << VPLAN_RX_QBASE_VFFIRSTQ_S) & | |
372 | VPLAN_RX_QBASE_VFFIRSTQ_M) | | |
ac371613 | 373 | (((max_rxq - 1) << VPLAN_RX_QBASE_VFNUMQ_S) & |
ddf30f7f AV |
374 | VPLAN_RX_QBASE_VFNUMQ_M)); |
375 | wr32(hw, VPLAN_RX_QBASE(vf->vf_id), reg); | |
376 | } else { | |
4015d11e | 377 | dev_err(dev, "Scattered mode for VF Rx queues is not yet implemented\n"); |
ddf30f7f AV |
378 | } |
379 | } | |
380 | ||
ac371613 BC |
381 | /** |
382 | * ice_ena_vf_mappings - enable VF MSIX and queue mapping | |
383 | * @vf: pointer to the VF structure | |
384 | */ | |
385 | static void ice_ena_vf_mappings(struct ice_vf *vf) | |
386 | { | |
c5afbe99 | 387 | struct ice_vsi *vsi = ice_get_vf_vsi(vf); |
ac371613 BC |
388 | |
389 | ice_ena_vf_msix_mappings(vf); | |
390 | ice_ena_vf_q_mappings(vf, vsi->alloc_txq, vsi->alloc_rxq); | |
391 | } | |
392 | ||
cbe66bfe BC |
393 | /** |
394 | * ice_calc_vf_reg_idx - Calculate the VF's register index in the PF space | |
395 | * @vf: VF to calculate the register index for | |
396 | * @q_vector: a q_vector associated to the VF | |
397 | */ | |
398 | int ice_calc_vf_reg_idx(struct ice_vf *vf, struct ice_q_vector *q_vector) | |
399 | { | |
400 | struct ice_pf *pf; | |
401 | ||
402 | if (!vf || !q_vector) | |
403 | return -EINVAL; | |
404 | ||
405 | pf = vf->pf; | |
406 | ||
407 | /* always add one to account for the OICR being the first MSIX */ | |
000773c0 | 408 | return pf->sriov_base_vector + pf->vfs.num_msix_per * vf->vf_id + |
cbe66bfe BC |
409 | q_vector->v_idx + 1; |
410 | } | |
411 | ||
412 | /** | |
413 | * ice_get_max_valid_res_idx - Get the max valid resource index | |
414 | * @res: pointer to the resource to find the max valid index for | |
415 | * | |
416 | * Start from the end of the ice_res_tracker and return right when we find the | |
417 | * first res->list entry with the ICE_RES_VALID_BIT set. This function is only | |
418 | * valid for SR-IOV because it is the only consumer that manipulates the | |
419 | * res->end and this is always called when res->end is set to res->num_entries. | |
420 | */ | |
421 | static int ice_get_max_valid_res_idx(struct ice_res_tracker *res) | |
422 | { | |
423 | int i; | |
424 | ||
425 | if (!res) | |
426 | return -EINVAL; | |
427 | ||
428 | for (i = res->num_entries - 1; i >= 0; i--) | |
429 | if (res->list[i] & ICE_RES_VALID_BIT) | |
430 | return i; | |
431 | ||
432 | return 0; | |
433 | } | |
434 | ||
435 | /** | |
436 | * ice_sriov_set_msix_res - Set any used MSIX resources | |
437 | * @pf: pointer to PF structure | |
438 | * @num_msix_needed: number of MSIX vectors needed for all SR-IOV VFs | |
439 | * | |
440 | * This function allows SR-IOV resources to be taken from the end of the PF's | |
0ca469fb MW |
441 | * allowed HW MSIX vectors so that the irq_tracker will not be affected. We |
442 | * just set the pf->sriov_base_vector and return success. | |
cbe66bfe | 443 | * |
0ca469fb MW |
444 | * If there are not enough resources available, return an error. This should |
445 | * always be caught by ice_set_per_vf_res(). | |
cbe66bfe | 446 | * |
ac382a09 | 447 | * Return 0 on success, and -EINVAL when there are not enough MSIX vectors |
cbe66bfe BC |
448 | * in the PF's space available for SR-IOV. |
449 | */ | |
450 | static int ice_sriov_set_msix_res(struct ice_pf *pf, u16 num_msix_needed) | |
451 | { | |
0ca469fb MW |
452 | u16 total_vectors = pf->hw.func_caps.common_cap.num_msix_vectors; |
453 | int vectors_used = pf->irq_tracker->num_entries; | |
cbe66bfe BC |
454 | int sriov_base_vector; |
455 | ||
0ca469fb | 456 | sriov_base_vector = total_vectors - num_msix_needed; |
cbe66bfe BC |
457 | |
458 | /* make sure we only grab irq_tracker entries from the list end and | |
459 | * that we have enough available MSIX vectors | |
460 | */ | |
0ca469fb | 461 | if (sriov_base_vector < vectors_used) |
cbe66bfe BC |
462 | return -EINVAL; |
463 | ||
464 | pf->sriov_base_vector = sriov_base_vector; | |
465 | ||
cbe66bfe BC |
466 | return 0; |
467 | } | |
468 | ||
ddf30f7f | 469 | /** |
0ca469fb | 470 | * ice_set_per_vf_res - check if vectors and queues are available |
ddf30f7f | 471 | * @pf: pointer to the PF structure |
cd0f4f3b | 472 | * @num_vfs: the number of SR-IOV VFs being configured |
ddf30f7f | 473 | * |
0ca469fb MW |
474 | * First, determine HW interrupts from common pool. If we allocate fewer VFs, we |
475 | * get more vectors and can enable more queues per VF. Note that this does not | |
476 | * grab any vectors from the SW pool already allocated. Also note, that all | |
477 | * vector counts include one for each VF's miscellaneous interrupt vector | |
478 | * (i.e. OICR). | |
479 | * | |
480 | * Minimum VFs - 2 vectors, 1 queue pair | |
481 | * Small VFs - 5 vectors, 4 queue pairs | |
482 | * Medium VFs - 17 vectors, 16 queue pairs | |
483 | * | |
484 | * Second, determine number of queue pairs per VF by starting with a pre-defined | |
485 | * maximum each VF supports. If this is not possible, then we adjust based on | |
486 | * queue pairs available on the device. | |
487 | * | |
488 | * Lastly, set queue and MSI-X VF variables tracked by the PF so it can be used | |
489 | * by each VF during VF initialization and reset. | |
ddf30f7f | 490 | */ |
cd0f4f3b | 491 | static int ice_set_per_vf_res(struct ice_pf *pf, u16 num_vfs) |
ddf30f7f | 492 | { |
cbe66bfe | 493 | int max_valid_res_idx = ice_get_max_valid_res_idx(pf->irq_tracker); |
cd0f4f3b | 494 | u16 num_msix_per_vf, num_txq, num_rxq, avail_qs; |
46c276ce | 495 | int msix_avail_per_vf, msix_avail_for_sriov; |
4015d11e | 496 | struct device *dev = ice_pf_to_dev(pf); |
94ab2488 | 497 | int err; |
ddf30f7f | 498 | |
3d5985a1 JK |
499 | lockdep_assert_held(&pf->vfs.table_lock); |
500 | ||
94ab2488 | 501 | if (!num_vfs) |
ddf30f7f AV |
502 | return -EINVAL; |
503 | ||
94ab2488 JK |
504 | if (max_valid_res_idx < 0) |
505 | return -ENOSPC; | |
506 | ||
0ca469fb | 507 | /* determine MSI-X resources per VF */ |
46c276ce BC |
508 | msix_avail_for_sriov = pf->hw.func_caps.common_cap.num_msix_vectors - |
509 | pf->irq_tracker->num_entries; | |
cd0f4f3b | 510 | msix_avail_per_vf = msix_avail_for_sriov / num_vfs; |
46c276ce BC |
511 | if (msix_avail_per_vf >= ICE_NUM_VF_MSIX_MED) { |
512 | num_msix_per_vf = ICE_NUM_VF_MSIX_MED; | |
513 | } else if (msix_avail_per_vf >= ICE_NUM_VF_MSIX_SMALL) { | |
514 | num_msix_per_vf = ICE_NUM_VF_MSIX_SMALL; | |
f34f5555 BC |
515 | } else if (msix_avail_per_vf >= ICE_NUM_VF_MSIX_MULTIQ_MIN) { |
516 | num_msix_per_vf = ICE_NUM_VF_MSIX_MULTIQ_MIN; | |
46c276ce BC |
517 | } else if (msix_avail_per_vf >= ICE_MIN_INTR_PER_VF) { |
518 | num_msix_per_vf = ICE_MIN_INTR_PER_VF; | |
ddf30f7f | 519 | } else { |
46c276ce BC |
520 | 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", |
521 | msix_avail_for_sriov, ICE_MIN_INTR_PER_VF, | |
cd0f4f3b | 522 | num_vfs); |
94ab2488 | 523 | return -ENOSPC; |
ddf30f7f AV |
524 | } |
525 | ||
cd0f4f3b JK |
526 | num_txq = min_t(u16, num_msix_per_vf - ICE_NONQ_VECS_VF, |
527 | ICE_MAX_RSS_QS_PER_VF); | |
528 | avail_qs = ice_get_avail_txq_count(pf) / num_vfs; | |
529 | if (!avail_qs) | |
530 | num_txq = 0; | |
531 | else if (num_txq > avail_qs) | |
532 | num_txq = rounddown_pow_of_two(avail_qs); | |
533 | ||
534 | num_rxq = min_t(u16, num_msix_per_vf - ICE_NONQ_VECS_VF, | |
535 | ICE_MAX_RSS_QS_PER_VF); | |
536 | avail_qs = ice_get_avail_rxq_count(pf) / num_vfs; | |
537 | if (!avail_qs) | |
538 | num_rxq = 0; | |
539 | else if (num_rxq > avail_qs) | |
540 | num_rxq = rounddown_pow_of_two(avail_qs); | |
541 | ||
542 | if (num_txq < ICE_MIN_QS_PER_VF || num_rxq < ICE_MIN_QS_PER_VF) { | |
46c276ce | 543 | dev_err(dev, "Not enough queues to support minimum of %d queue pairs per VF for %d VFs\n", |
cd0f4f3b | 544 | ICE_MIN_QS_PER_VF, num_vfs); |
94ab2488 | 545 | return -ENOSPC; |
0ca469fb | 546 | } |
ddf30f7f | 547 | |
94ab2488 JK |
548 | err = ice_sriov_set_msix_res(pf, num_msix_per_vf * num_vfs); |
549 | if (err) { | |
550 | dev_err(dev, "Unable to set MSI-X resources for %d VFs, err %d\n", | |
551 | num_vfs, err); | |
552 | return err; | |
0ca469fb | 553 | } |
cbe66bfe | 554 | |
0ca469fb | 555 | /* only allow equal Tx/Rx queue count (i.e. queue pairs) */ |
000773c0 JK |
556 | pf->vfs.num_qps_per = min_t(int, num_txq, num_rxq); |
557 | pf->vfs.num_msix_per = num_msix_per_vf; | |
0ca469fb | 558 | dev_info(dev, "Enabling %d VFs with %d vectors and %d queues per VF\n", |
000773c0 | 559 | num_vfs, pf->vfs.num_msix_per, pf->vfs.num_qps_per); |
ddf30f7f AV |
560 | |
561 | return 0; | |
562 | } | |
563 | ||
916c7fdf BC |
564 | /** |
565 | * ice_init_vf_vsi_res - initialize/setup VF VSI resources | |
566 | * @vf: VF to initialize/setup the VSI for | |
567 | * | |
568 | * This function creates a VSI for the VF, adds a VLAN 0 filter, and sets up the | |
569 | * VF VSI's broadcast filter and is only used during initial VF creation. | |
570 | */ | |
571 | static int ice_init_vf_vsi_res(struct ice_vf *vf) | |
572 | { | |
f1da5a08 | 573 | struct ice_vsi_vlan_ops *vlan_ops; |
916c7fdf BC |
574 | struct ice_pf *pf = vf->pf; |
575 | u8 broadcast[ETH_ALEN]; | |
916c7fdf BC |
576 | struct ice_vsi *vsi; |
577 | struct device *dev; | |
578 | int err; | |
579 | ||
580 | vf->first_vector_idx = ice_calc_vf_first_vector_idx(pf, vf); | |
581 | ||
582 | dev = ice_pf_to_dev(pf); | |
3726cce2 BC |
583 | vsi = ice_vf_vsi_setup(vf); |
584 | if (!vsi) | |
916c7fdf | 585 | return -ENOMEM; |
916c7fdf | 586 | |
3e0b5971 | 587 | err = ice_vsi_add_vlan_zero(vsi); |
916c7fdf BC |
588 | if (err) { |
589 | dev_warn(dev, "Failed to add VLAN 0 filter for VF %d\n", | |
590 | vf->vf_id); | |
591 | goto release_vsi; | |
592 | } | |
593 | ||
f1da5a08 BC |
594 | vlan_ops = ice_get_compat_vsi_vlan_ops(vsi); |
595 | err = vlan_ops->ena_rx_filtering(vsi); | |
596 | if (err) { | |
597 | dev_warn(dev, "Failed to enable Rx VLAN filtering for VF %d\n", | |
598 | vf->vf_id); | |
599 | goto release_vsi; | |
600 | } | |
601 | ||
916c7fdf | 602 | eth_broadcast_addr(broadcast); |
2ccc1c1c TN |
603 | err = ice_fltr_add_mac(vsi, broadcast, ICE_FWD_TO_VSI); |
604 | if (err) { | |
5f87ec48 | 605 | dev_err(dev, "Failed to add broadcast MAC filter for VF %d, error %d\n", |
2ccc1c1c | 606 | vf->vf_id, err); |
916c7fdf BC |
607 | goto release_vsi; |
608 | } | |
609 | ||
a8ea6d86 | 610 | err = ice_vsi_apply_spoofchk(vsi, vf->spoofchk); |
daf4dd16 BC |
611 | if (err) { |
612 | dev_warn(dev, "Failed to initialize spoofchk setting for VF %d\n", | |
613 | vf->vf_id); | |
614 | goto release_vsi; | |
615 | } | |
616 | ||
916c7fdf BC |
617 | vf->num_mac = 1; |
618 | ||
619 | return 0; | |
620 | ||
621 | release_vsi: | |
3726cce2 | 622 | ice_vf_vsi_release(vf); |
916c7fdf BC |
623 | return err; |
624 | } | |
625 | ||
626 | /** | |
627 | * ice_start_vfs - start VFs so they are ready to be used by SR-IOV | |
628 | * @pf: PF the VFs are associated with | |
629 | */ | |
630 | static int ice_start_vfs(struct ice_pf *pf) | |
631 | { | |
632 | struct ice_hw *hw = &pf->hw; | |
c4c2c7db JK |
633 | unsigned int bkt, it_cnt; |
634 | struct ice_vf *vf; | |
635 | int retval; | |
916c7fdf | 636 | |
3d5985a1 JK |
637 | lockdep_assert_held(&pf->vfs.table_lock); |
638 | ||
c4c2c7db JK |
639 | it_cnt = 0; |
640 | ice_for_each_vf(pf, bkt, vf) { | |
9c6f7878 | 641 | vf->vf_ops->clear_reset_trigger(vf); |
916c7fdf BC |
642 | |
643 | retval = ice_init_vf_vsi_res(vf); | |
644 | if (retval) { | |
645 | dev_err(ice_pf_to_dev(pf), "Failed to initialize VSI resources for VF %d, error %d\n", | |
646 | vf->vf_id, retval); | |
647 | goto teardown; | |
648 | } | |
649 | ||
650 | set_bit(ICE_VF_STATE_INIT, vf->vf_states); | |
651 | ice_ena_vf_mappings(vf); | |
652 | wr32(hw, VFGEN_RSTAT(vf->vf_id), VIRTCHNL_VFR_VFACTIVE); | |
c4c2c7db | 653 | it_cnt++; |
916c7fdf BC |
654 | } |
655 | ||
656 | ice_flush(hw); | |
657 | return 0; | |
658 | ||
659 | teardown: | |
c4c2c7db JK |
660 | ice_for_each_vf(pf, bkt, vf) { |
661 | if (it_cnt == 0) | |
662 | break; | |
916c7fdf BC |
663 | |
664 | ice_dis_vf_mappings(vf); | |
3726cce2 | 665 | ice_vf_vsi_release(vf); |
c4c2c7db | 666 | it_cnt--; |
916c7fdf BC |
667 | } |
668 | ||
669 | return retval; | |
670 | } | |
671 | ||
9c6f7878 JK |
672 | /** |
673 | * ice_sriov_free_vf - Free VF memory after all references are dropped | |
674 | * @vf: pointer to VF to free | |
675 | * | |
676 | * Called by ice_put_vf through ice_release_vf once the last reference to a VF | |
677 | * structure has been dropped. | |
678 | */ | |
679 | static void ice_sriov_free_vf(struct ice_vf *vf) | |
680 | { | |
681 | mutex_destroy(&vf->cfg_lock); | |
682 | ||
683 | kfree_rcu(vf, rcu); | |
684 | } | |
685 | ||
686 | /** | |
687 | * ice_sriov_clear_mbx_register - clears SRIOV VF's mailbox registers | |
688 | * @vf: the vf to configure | |
689 | */ | |
690 | static void ice_sriov_clear_mbx_register(struct ice_vf *vf) | |
691 | { | |
692 | struct ice_pf *pf = vf->pf; | |
693 | ||
694 | wr32(&pf->hw, VF_MBX_ARQLEN(vf->vf_id), 0); | |
695 | wr32(&pf->hw, VF_MBX_ATQLEN(vf->vf_id), 0); | |
696 | } | |
697 | ||
698 | /** | |
699 | * ice_sriov_trigger_reset_register - trigger VF reset for SRIOV VF | |
700 | * @vf: pointer to VF structure | |
701 | * @is_vflr: true if reset occurred due to VFLR | |
702 | * | |
703 | * Trigger and cleanup after a VF reset for a SR-IOV VF. | |
704 | */ | |
705 | static void ice_sriov_trigger_reset_register(struct ice_vf *vf, bool is_vflr) | |
706 | { | |
707 | struct ice_pf *pf = vf->pf; | |
708 | u32 reg, reg_idx, bit_idx; | |
709 | unsigned int vf_abs_id, i; | |
710 | struct device *dev; | |
711 | struct ice_hw *hw; | |
712 | ||
713 | dev = ice_pf_to_dev(pf); | |
714 | hw = &pf->hw; | |
715 | vf_abs_id = vf->vf_id + hw->func_caps.vf_base_id; | |
716 | ||
717 | /* In the case of a VFLR, HW has already reset the VF and we just need | |
718 | * to clean up. Otherwise we must first trigger the reset using the | |
719 | * VFRTRIG register. | |
720 | */ | |
721 | if (!is_vflr) { | |
722 | reg = rd32(hw, VPGEN_VFRTRIG(vf->vf_id)); | |
723 | reg |= VPGEN_VFRTRIG_VFSWR_M; | |
724 | wr32(hw, VPGEN_VFRTRIG(vf->vf_id), reg); | |
725 | } | |
726 | ||
727 | /* clear the VFLR bit in GLGEN_VFLRSTAT */ | |
728 | reg_idx = (vf_abs_id) / 32; | |
729 | bit_idx = (vf_abs_id) % 32; | |
730 | wr32(hw, GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx)); | |
731 | ice_flush(hw); | |
732 | ||
733 | wr32(hw, PF_PCI_CIAA, | |
734 | VF_DEVICE_STATUS | (vf_abs_id << PF_PCI_CIAA_VF_NUM_S)); | |
735 | for (i = 0; i < ICE_PCI_CIAD_WAIT_COUNT; i++) { | |
736 | reg = rd32(hw, PF_PCI_CIAD); | |
737 | /* no transactions pending so stop polling */ | |
738 | if ((reg & VF_TRANS_PENDING_M) == 0) | |
739 | break; | |
740 | ||
741 | dev_err(dev, "VF %u PCI transactions stuck\n", vf->vf_id); | |
742 | udelay(ICE_PCI_CIAD_WAIT_DELAY_US); | |
743 | } | |
744 | } | |
745 | ||
746 | /** | |
747 | * ice_sriov_poll_reset_status - poll SRIOV VF reset status | |
748 | * @vf: pointer to VF structure | |
749 | * | |
750 | * Returns true when reset is successful, else returns false | |
751 | */ | |
752 | static bool ice_sriov_poll_reset_status(struct ice_vf *vf) | |
753 | { | |
754 | struct ice_pf *pf = vf->pf; | |
755 | unsigned int i; | |
756 | u32 reg; | |
757 | ||
758 | for (i = 0; i < 10; i++) { | |
759 | /* VF reset requires driver to first reset the VF and then | |
760 | * poll the status register to make sure that the reset | |
761 | * completed successfully. | |
762 | */ | |
763 | reg = rd32(&pf->hw, VPGEN_VFRSTAT(vf->vf_id)); | |
764 | if (reg & VPGEN_VFRSTAT_VFRD_M) | |
765 | return true; | |
766 | ||
767 | /* only sleep if the reset is not done */ | |
768 | usleep_range(10, 20); | |
769 | } | |
770 | return false; | |
771 | } | |
772 | ||
773 | /** | |
774 | * ice_sriov_clear_reset_trigger - enable VF to access hardware | |
775 | * @vf: VF to enabled hardware access for | |
776 | */ | |
777 | static void ice_sriov_clear_reset_trigger(struct ice_vf *vf) | |
778 | { | |
779 | struct ice_hw *hw = &vf->pf->hw; | |
780 | u32 reg; | |
781 | ||
782 | reg = rd32(hw, VPGEN_VFRTRIG(vf->vf_id)); | |
783 | reg &= ~VPGEN_VFRTRIG_VFSWR_M; | |
784 | wr32(hw, VPGEN_VFRTRIG(vf->vf_id), reg); | |
785 | ice_flush(hw); | |
786 | } | |
787 | ||
788 | /** | |
789 | * ice_sriov_vsi_rebuild - release and rebuild VF's VSI | |
790 | * @vf: VF to release and setup the VSI for | |
791 | * | |
792 | * This is only called when a single VF is being reset (i.e. VFR, VFLR, host VF | |
793 | * configuration change, etc.). | |
794 | */ | |
795 | static int ice_sriov_vsi_rebuild(struct ice_vf *vf) | |
796 | { | |
797 | struct ice_pf *pf = vf->pf; | |
798 | ||
799 | ice_vf_vsi_release(vf); | |
800 | if (!ice_vf_vsi_setup(vf)) { | |
801 | dev_err(ice_pf_to_dev(pf), | |
802 | "Failed to release and setup the VF%u's VSI\n", | |
803 | vf->vf_id); | |
804 | return -ENOMEM; | |
805 | } | |
806 | ||
807 | return 0; | |
808 | } | |
809 | ||
810 | /** | |
811 | * ice_sriov_post_vsi_rebuild - tasks to do after the VF's VSI have been rebuilt | |
812 | * @vf: VF to perform tasks on | |
813 | */ | |
814 | static void ice_sriov_post_vsi_rebuild(struct ice_vf *vf) | |
815 | { | |
816 | ice_vf_rebuild_host_cfg(vf); | |
817 | ice_vf_set_initialized(vf); | |
818 | ice_ena_vf_mappings(vf); | |
819 | wr32(&vf->pf->hw, VFGEN_RSTAT(vf->vf_id), VIRTCHNL_VFR_VFACTIVE); | |
820 | } | |
821 | ||
822 | static const struct ice_vf_ops ice_sriov_vf_ops = { | |
823 | .reset_type = ICE_VF_RESET, | |
824 | .free = ice_sriov_free_vf, | |
825 | .clear_mbx_register = ice_sriov_clear_mbx_register, | |
826 | .trigger_reset_register = ice_sriov_trigger_reset_register, | |
827 | .poll_reset_status = ice_sriov_poll_reset_status, | |
828 | .clear_reset_trigger = ice_sriov_clear_reset_trigger, | |
829 | .vsi_rebuild = ice_sriov_vsi_rebuild, | |
830 | .post_vsi_rebuild = ice_sriov_post_vsi_rebuild, | |
831 | }; | |
832 | ||
ddf30f7f | 833 | /** |
3d5985a1 JK |
834 | * ice_create_vf_entries - Allocate and insert VF entries |
835 | * @pf: pointer to the PF structure | |
836 | * @num_vfs: the number of VFs to allocate | |
837 | * | |
838 | * Allocate new VF entries and insert them into the hash table. Set some | |
839 | * basic default fields for initializing the new VFs. | |
840 | * | |
841 | * After this function exits, the hash table will have num_vfs entries | |
842 | * inserted. | |
843 | * | |
844 | * Returns 0 on success or an integer error code on failure. | |
a06325a0 | 845 | */ |
3d5985a1 | 846 | static int ice_create_vf_entries(struct ice_pf *pf, u16 num_vfs) |
a06325a0 | 847 | { |
3d5985a1 | 848 | struct ice_vfs *vfs = &pf->vfs; |
c4c2c7db | 849 | struct ice_vf *vf; |
3d5985a1 JK |
850 | u16 vf_id; |
851 | int err; | |
852 | ||
853 | lockdep_assert_held(&vfs->table_lock); | |
854 | ||
855 | for (vf_id = 0; vf_id < num_vfs; vf_id++) { | |
856 | vf = kzalloc(sizeof(*vf), GFP_KERNEL); | |
857 | if (!vf) { | |
858 | err = -ENOMEM; | |
859 | goto err_free_entries; | |
860 | } | |
861 | kref_init(&vf->refcnt); | |
a06325a0 BC |
862 | |
863 | vf->pf = pf; | |
3d5985a1 JK |
864 | vf->vf_id = vf_id; |
865 | ||
9c6f7878 JK |
866 | /* set sriov vf ops for VFs created during SRIOV flow */ |
867 | vf->vf_ops = &ice_sriov_vf_ops; | |
868 | ||
a06325a0 BC |
869 | vf->vf_sw_id = pf->first_sw; |
870 | /* assign default capabilities */ | |
a06325a0 | 871 | vf->spoofchk = true; |
000773c0 | 872 | vf->num_vf_qs = pf->vfs.num_qps_per; |
c0dcaa55 | 873 | ice_vc_set_default_allowlist(vf); |
da62c5ff QZ |
874 | |
875 | /* ctrl_vsi_idx will be set to a valid value only when VF | |
876 | * creates its first fdir rule. | |
877 | */ | |
878 | ice_vf_ctrl_invalidate_vsi(vf); | |
1f7ea1cd | 879 | ice_vf_fdir_init(vf); |
ac19e03e | 880 | |
a7e11710 | 881 | ice_virtchnl_set_dflt_ops(vf); |
e6ba5273 BC |
882 | |
883 | mutex_init(&vf->cfg_lock); | |
a06325a0 | 884 | |
3d5985a1 JK |
885 | hash_add_rcu(vfs->table, &vf->entry, vf_id); |
886 | } | |
a06325a0 BC |
887 | |
888 | return 0; | |
3d5985a1 JK |
889 | |
890 | err_free_entries: | |
891 | ice_free_vf_entries(pf); | |
892 | return err; | |
a06325a0 BC |
893 | } |
894 | ||
895 | /** | |
896 | * ice_ena_vfs - enable VFs so they are ready to be used | |
ddf30f7f | 897 | * @pf: pointer to the PF structure |
a06325a0 | 898 | * @num_vfs: number of VFs to enable |
ddf30f7f | 899 | */ |
a06325a0 | 900 | static int ice_ena_vfs(struct ice_pf *pf, u16 num_vfs) |
ddf30f7f | 901 | { |
4015d11e | 902 | struct device *dev = ice_pf_to_dev(pf); |
ddf30f7f | 903 | struct ice_hw *hw = &pf->hw; |
a06325a0 | 904 | int ret; |
ddf30f7f AV |
905 | |
906 | /* Disable global interrupt 0 so we don't try to handle the VFLR. */ | |
cbe66bfe | 907 | wr32(hw, GLINT_DYN_CTL(pf->oicr_idx), |
ddf30f7f | 908 | ICE_ITR_NONE << GLINT_DYN_CTL_ITR_INDX_S); |
7e408e07 | 909 | set_bit(ICE_OICR_INTR_DIS, pf->state); |
ddf30f7f AV |
910 | ice_flush(hw); |
911 | ||
a06325a0 | 912 | ret = pci_enable_sriov(pf->pdev, num_vfs); |
3d5985a1 | 913 | if (ret) |
ddf30f7f | 914 | goto err_unroll_intr; |
a06325a0 | 915 | |
3d5985a1 | 916 | mutex_lock(&pf->vfs.table_lock); |
ddf30f7f | 917 | |
94ab2488 JK |
918 | ret = ice_set_per_vf_res(pf, num_vfs); |
919 | if (ret) { | |
920 | dev_err(dev, "Not enough resources for %d VFs, err %d. Try with fewer number of VFs\n", | |
921 | num_vfs, ret); | |
916c7fdf BC |
922 | goto err_unroll_sriov; |
923 | } | |
924 | ||
3d5985a1 JK |
925 | ret = ice_create_vf_entries(pf, num_vfs); |
926 | if (ret) { | |
927 | dev_err(dev, "Failed to allocate VF entries for %d VFs\n", | |
928 | num_vfs); | |
929 | goto err_unroll_sriov; | |
930 | } | |
ddf30f7f | 931 | |
94ab2488 JK |
932 | ret = ice_start_vfs(pf); |
933 | if (ret) { | |
934 | dev_err(dev, "Failed to start %d VFs, err %d\n", num_vfs, ret); | |
916c7fdf | 935 | ret = -EAGAIN; |
3d5985a1 | 936 | goto err_unroll_vf_entries; |
72f9c203 | 937 | } |
ddf30f7f | 938 | |
7e408e07 | 939 | clear_bit(ICE_VF_DIS, pf->state); |
1c54c839 | 940 | |
8702ed0b | 941 | ret = ice_eswitch_configure(pf); |
2b369448 JK |
942 | if (ret) { |
943 | dev_err(dev, "Failed to configure eswitch, err %d\n", ret); | |
1c54c839 | 944 | goto err_unroll_sriov; |
2b369448 | 945 | } |
1c54c839 | 946 | |
2657e16d PG |
947 | /* rearm global interrupts */ |
948 | if (test_and_clear_bit(ICE_OICR_INTR_DIS, pf->state)) | |
949 | ice_irq_dynamic_ena(hw, NULL, NULL); | |
950 | ||
3d5985a1 JK |
951 | mutex_unlock(&pf->vfs.table_lock); |
952 | ||
916c7fdf | 953 | return 0; |
ddf30f7f | 954 | |
3d5985a1 JK |
955 | err_unroll_vf_entries: |
956 | ice_free_vf_entries(pf); | |
ddf30f7f | 957 | err_unroll_sriov: |
3d5985a1 | 958 | mutex_unlock(&pf->vfs.table_lock); |
ddf30f7f AV |
959 | pci_disable_sriov(pf->pdev); |
960 | err_unroll_intr: | |
961 | /* rearm interrupts here */ | |
962 | ice_irq_dynamic_ena(hw, NULL, NULL); | |
7e408e07 | 963 | clear_bit(ICE_OICR_INTR_DIS, pf->state); |
ddf30f7f AV |
964 | return ret; |
965 | } | |
966 | ||
ddf30f7f AV |
967 | /** |
968 | * ice_pci_sriov_ena - Enable or change number of VFs | |
969 | * @pf: pointer to the PF structure | |
970 | * @num_vfs: number of VFs to allocate | |
02337f1f BC |
971 | * |
972 | * Returns 0 on success and negative on failure | |
ddf30f7f AV |
973 | */ |
974 | static int ice_pci_sriov_ena(struct ice_pf *pf, int num_vfs) | |
975 | { | |
976 | int pre_existing_vfs = pci_num_vf(pf->pdev); | |
4015d11e | 977 | struct device *dev = ice_pf_to_dev(pf); |
ddf30f7f AV |
978 | int err; |
979 | ||
ddf30f7f AV |
980 | if (pre_existing_vfs && pre_existing_vfs != num_vfs) |
981 | ice_free_vfs(pf); | |
982 | else if (pre_existing_vfs && pre_existing_vfs == num_vfs) | |
02337f1f | 983 | return 0; |
ddf30f7f | 984 | |
000773c0 | 985 | if (num_vfs > pf->vfs.num_supported) { |
ddf30f7f | 986 | dev_err(dev, "Can't enable %d VFs, max VFs supported is %d\n", |
000773c0 | 987 | num_vfs, pf->vfs.num_supported); |
dced8ad3 | 988 | return -EOPNOTSUPP; |
ddf30f7f AV |
989 | } |
990 | ||
a06325a0 BC |
991 | dev_info(dev, "Enabling %d VFs\n", num_vfs); |
992 | err = ice_ena_vfs(pf, num_vfs); | |
ddf30f7f AV |
993 | if (err) { |
994 | dev_err(dev, "Failed to enable SR-IOV: %d\n", err); | |
995 | return err; | |
996 | } | |
997 | ||
998 | set_bit(ICE_FLAG_SRIOV_ENA, pf->flags); | |
02337f1f BC |
999 | return 0; |
1000 | } | |
1001 | ||
1002 | /** | |
1003 | * ice_check_sriov_allowed - check if SR-IOV is allowed based on various checks | |
1004 | * @pf: PF to enabled SR-IOV on | |
1005 | */ | |
1006 | static int ice_check_sriov_allowed(struct ice_pf *pf) | |
1007 | { | |
1008 | struct device *dev = ice_pf_to_dev(pf); | |
1009 | ||
1010 | if (!test_bit(ICE_FLAG_SRIOV_CAPABLE, pf->flags)) { | |
1011 | dev_err(dev, "This device is not capable of SR-IOV\n"); | |
1012 | return -EOPNOTSUPP; | |
1013 | } | |
1014 | ||
1015 | if (ice_is_safe_mode(pf)) { | |
1016 | dev_err(dev, "SR-IOV cannot be configured - Device is in Safe Mode\n"); | |
1017 | return -EOPNOTSUPP; | |
1018 | } | |
1019 | ||
1020 | if (!ice_pf_state_is_nominal(pf)) { | |
1021 | dev_err(dev, "Cannot enable SR-IOV, device not ready\n"); | |
1022 | return -EBUSY; | |
1023 | } | |
1024 | ||
1025 | return 0; | |
ddf30f7f AV |
1026 | } |
1027 | ||
1028 | /** | |
1029 | * ice_sriov_configure - Enable or change number of VFs via sysfs | |
1030 | * @pdev: pointer to a pci_dev structure | |
02337f1f | 1031 | * @num_vfs: number of VFs to allocate or 0 to free VFs |
ddf30f7f | 1032 | * |
02337f1f BC |
1033 | * This function is called when the user updates the number of VFs in sysfs. On |
1034 | * success return whatever num_vfs was set to by the caller. Return negative on | |
1035 | * failure. | |
ddf30f7f AV |
1036 | */ |
1037 | int ice_sriov_configure(struct pci_dev *pdev, int num_vfs) | |
1038 | { | |
1039 | struct ice_pf *pf = pci_get_drvdata(pdev); | |
4015d11e | 1040 | struct device *dev = ice_pf_to_dev(pf); |
02337f1f | 1041 | int err; |
ddf30f7f | 1042 | |
02337f1f BC |
1043 | err = ice_check_sriov_allowed(pf); |
1044 | if (err) | |
1045 | return err; | |
462acf6a | 1046 | |
02337f1f BC |
1047 | if (!num_vfs) { |
1048 | if (!pci_vfs_assigned(pdev)) { | |
1049 | ice_free_vfs(pf); | |
b668f4cd | 1050 | ice_mbx_deinit_snapshot(&pf->hw); |
df006dd4 DE |
1051 | if (pf->lag) |
1052 | ice_enable_lag(pf->lag); | |
02337f1f BC |
1053 | return 0; |
1054 | } | |
ddf30f7f | 1055 | |
4015d11e | 1056 | dev_err(dev, "can't free VFs because some are assigned to VMs.\n"); |
ddf30f7f AV |
1057 | return -EBUSY; |
1058 | } | |
1059 | ||
2ccc1c1c TN |
1060 | err = ice_mbx_init_snapshot(&pf->hw, num_vfs); |
1061 | if (err) | |
1062 | return err; | |
0891c896 | 1063 | |
02337f1f | 1064 | err = ice_pci_sriov_ena(pf, num_vfs); |
0891c896 VS |
1065 | if (err) { |
1066 | ice_mbx_deinit_snapshot(&pf->hw); | |
02337f1f | 1067 | return err; |
0891c896 | 1068 | } |
02337f1f | 1069 | |
df006dd4 DE |
1070 | if (pf->lag) |
1071 | ice_disable_lag(pf->lag); | |
02337f1f | 1072 | return num_vfs; |
ddf30f7f | 1073 | } |
007676b4 AV |
1074 | |
1075 | /** | |
1076 | * ice_process_vflr_event - Free VF resources via IRQ calls | |
1077 | * @pf: pointer to the PF structure | |
1078 | * | |
df17b7e0 | 1079 | * called from the VFLR IRQ handler to |
007676b4 AV |
1080 | * free up VF resources and state variables |
1081 | */ | |
1082 | void ice_process_vflr_event(struct ice_pf *pf) | |
1083 | { | |
1084 | struct ice_hw *hw = &pf->hw; | |
c4c2c7db JK |
1085 | struct ice_vf *vf; |
1086 | unsigned int bkt; | |
007676b4 AV |
1087 | u32 reg; |
1088 | ||
7e408e07 | 1089 | if (!test_and_clear_bit(ICE_VFLR_EVENT_PENDING, pf->state) || |
fb916db1 | 1090 | !ice_has_vfs(pf)) |
007676b4 AV |
1091 | return; |
1092 | ||
3d5985a1 | 1093 | mutex_lock(&pf->vfs.table_lock); |
c4c2c7db | 1094 | ice_for_each_vf(pf, bkt, vf) { |
007676b4 AV |
1095 | u32 reg_idx, bit_idx; |
1096 | ||
c4c2c7db JK |
1097 | reg_idx = (hw->func_caps.vf_base_id + vf->vf_id) / 32; |
1098 | bit_idx = (hw->func_caps.vf_base_id + vf->vf_id) % 32; | |
007676b4 AV |
1099 | /* read GLGEN_VFLRSTAT register to find out the flr VFs */ |
1100 | reg = rd32(hw, GLGEN_VFLRSTAT(reg_idx)); | |
f5f085c0 | 1101 | if (reg & BIT(bit_idx)) |
007676b4 | 1102 | /* GLGEN_VFLRSTAT bit will be cleared in ice_reset_vf */ |
f5f085c0 | 1103 | ice_reset_vf(vf, ICE_VF_RESET_VFLR | ICE_VF_RESET_LOCK); |
007676b4 | 1104 | } |
3d5985a1 | 1105 | mutex_unlock(&pf->vfs.table_lock); |
007676b4 | 1106 | } |
7c710869 | 1107 | |
2309ae38 BC |
1108 | /** |
1109 | * ice_get_vf_from_pfq - get the VF who owns the PF space queue passed in | |
1110 | * @pf: PF used to index all VFs | |
1111 | * @pfq: queue index relative to the PF's function space | |
1112 | * | |
1113 | * If no VF is found who owns the pfq then return NULL, otherwise return a | |
1114 | * pointer to the VF who owns the pfq | |
3d5985a1 JK |
1115 | * |
1116 | * If this function returns non-NULL, it acquires a reference count of the VF | |
1117 | * structure. The caller is responsible for calling ice_put_vf() to drop this | |
1118 | * reference. | |
2309ae38 BC |
1119 | */ |
1120 | static struct ice_vf *ice_get_vf_from_pfq(struct ice_pf *pf, u16 pfq) | |
1121 | { | |
c4c2c7db JK |
1122 | struct ice_vf *vf; |
1123 | unsigned int bkt; | |
2309ae38 | 1124 | |
3d5985a1 JK |
1125 | rcu_read_lock(); |
1126 | ice_for_each_vf_rcu(pf, bkt, vf) { | |
2309ae38 BC |
1127 | struct ice_vsi *vsi; |
1128 | u16 rxq_idx; | |
1129 | ||
c5afbe99 | 1130 | vsi = ice_get_vf_vsi(vf); |
2309ae38 BC |
1131 | |
1132 | ice_for_each_rxq(vsi, rxq_idx) | |
3d5985a1 JK |
1133 | if (vsi->rxq_map[rxq_idx] == pfq) { |
1134 | struct ice_vf *found; | |
1135 | ||
1136 | if (kref_get_unless_zero(&vf->refcnt)) | |
1137 | found = vf; | |
1138 | else | |
1139 | found = NULL; | |
1140 | rcu_read_unlock(); | |
1141 | return found; | |
1142 | } | |
2309ae38 | 1143 | } |
3d5985a1 | 1144 | rcu_read_unlock(); |
2309ae38 BC |
1145 | |
1146 | return NULL; | |
1147 | } | |
1148 | ||
1149 | /** | |
1150 | * ice_globalq_to_pfq - convert from global queue index to PF space queue index | |
1151 | * @pf: PF used for conversion | |
1152 | * @globalq: global queue index used to convert to PF space queue index | |
1153 | */ | |
1154 | static u32 ice_globalq_to_pfq(struct ice_pf *pf, u32 globalq) | |
1155 | { | |
1156 | return globalq - pf->hw.func_caps.common_cap.rxq_first_id; | |
1157 | } | |
1158 | ||
1159 | /** | |
1160 | * ice_vf_lan_overflow_event - handle LAN overflow event for a VF | |
1161 | * @pf: PF that the LAN overflow event happened on | |
1162 | * @event: structure holding the event information for the LAN overflow event | |
1163 | * | |
1164 | * Determine if the LAN overflow event was caused by a VF queue. If it was not | |
1165 | * caused by a VF, do nothing. If a VF caused this LAN overflow event trigger a | |
1166 | * reset on the offending VF. | |
1167 | */ | |
1168 | void | |
1169 | ice_vf_lan_overflow_event(struct ice_pf *pf, struct ice_rq_event_info *event) | |
1170 | { | |
1171 | u32 gldcb_rtctq, queue; | |
1172 | struct ice_vf *vf; | |
1173 | ||
1174 | gldcb_rtctq = le32_to_cpu(event->desc.params.lan_overflow.prtdcb_ruptq); | |
1175 | dev_dbg(ice_pf_to_dev(pf), "GLDCB_RTCTQ: 0x%08x\n", gldcb_rtctq); | |
1176 | ||
1177 | /* event returns device global Rx queue number */ | |
1178 | queue = (gldcb_rtctq & GLDCB_RTCTQ_RXQNUM_M) >> | |
1179 | GLDCB_RTCTQ_RXQNUM_S; | |
1180 | ||
1181 | vf = ice_get_vf_from_pfq(pf, ice_globalq_to_pfq(pf, queue)); | |
1182 | if (!vf) | |
1183 | return; | |
1184 | ||
f5f085c0 | 1185 | ice_reset_vf(vf, ICE_VF_RESET_NOTIFY | ICE_VF_RESET_LOCK); |
3d5985a1 | 1186 | ice_put_vf(vf); |
2309ae38 BC |
1187 | } |
1188 | ||
1071a835 | 1189 | /** |
bf93bf79 JK |
1190 | * ice_set_vf_spoofchk |
1191 | * @netdev: network interface device structure | |
1192 | * @vf_id: VF identifier | |
1193 | * @ena: flag to enable or disable feature | |
1071a835 | 1194 | * |
bf93bf79 | 1195 | * Enable or disable VF spoof checking |
1071a835 | 1196 | */ |
bf93bf79 | 1197 | int ice_set_vf_spoofchk(struct net_device *netdev, int vf_id, bool ena) |
1071a835 | 1198 | { |
bf93bf79 JK |
1199 | struct ice_netdev_priv *np = netdev_priv(netdev); |
1200 | struct ice_pf *pf = np->vsi->back; | |
1201 | struct ice_vsi *vf_vsi; | |
4015d11e | 1202 | struct device *dev; |
bf93bf79 | 1203 | struct ice_vf *vf; |
1071a835 AV |
1204 | int ret; |
1205 | ||
bf93bf79 | 1206 | dev = ice_pf_to_dev(pf); |
1071a835 | 1207 | |
bf93bf79 JK |
1208 | vf = ice_get_vf_by_id(pf, vf_id); |
1209 | if (!vf) | |
1210 | return -EINVAL; | |
1071a835 | 1211 | |
bf93bf79 JK |
1212 | ret = ice_check_vf_ready_for_cfg(vf); |
1213 | if (ret) | |
1214 | goto out_put_vf; | |
1071a835 | 1215 | |
bf93bf79 JK |
1216 | vf_vsi = ice_get_vf_vsi(vf); |
1217 | if (!vf_vsi) { | |
1218 | netdev_err(netdev, "VSI %d for VF %d is null\n", | |
1219 | vf->lan_vsi_idx, vf->vf_id); | |
1220 | ret = -EINVAL; | |
1221 | goto out_put_vf; | |
f1ef73f5 AA |
1222 | } |
1223 | ||
bf93bf79 JK |
1224 | if (vf_vsi->type != ICE_VSI_VF) { |
1225 | netdev_err(netdev, "Type %d of VSI %d for VF %d is no ICE_VSI_VF\n", | |
1226 | vf_vsi->type, vf_vsi->vsi_num, vf->vf_id); | |
1227 | ret = -ENODEV; | |
1228 | goto out_put_vf; | |
cc71de8f | 1229 | } |
1071a835 | 1230 | |
bf93bf79 JK |
1231 | if (ena == vf->spoofchk) { |
1232 | dev_dbg(dev, "VF spoofchk already %s\n", ena ? "ON" : "OFF"); | |
1233 | ret = 0; | |
1234 | goto out_put_vf; | |
1071a835 AV |
1235 | } |
1236 | ||
bf93bf79 JK |
1237 | ret = ice_vsi_apply_spoofchk(vf_vsi, ena); |
1238 | if (ret) | |
1239 | dev_err(dev, "Failed to set spoofchk %s for VF %d VSI %d\n error %d\n", | |
1240 | ena ? "ON" : "OFF", vf->vf_id, vf_vsi->vsi_num, ret); | |
1241 | else | |
1242 | vf->spoofchk = ena; | |
1071a835 | 1243 | |
bf93bf79 JK |
1244 | out_put_vf: |
1245 | ice_put_vf(vf); | |
1071a835 AV |
1246 | return ret; |
1247 | } | |
1248 | ||
7c710869 AV |
1249 | /** |
1250 | * ice_get_vf_cfg | |
1251 | * @netdev: network interface device structure | |
1252 | * @vf_id: VF identifier | |
1253 | * @ivi: VF configuration structure | |
1254 | * | |
1255 | * return VF configuration | |
1256 | */ | |
c8b7abdd BA |
1257 | int |
1258 | ice_get_vf_cfg(struct net_device *netdev, int vf_id, struct ifla_vf_info *ivi) | |
7c710869 | 1259 | { |
4c66d227 | 1260 | struct ice_pf *pf = ice_netdev_to_pf(netdev); |
7c710869 | 1261 | struct ice_vf *vf; |
fb916db1 | 1262 | int ret; |
7c710869 | 1263 | |
fb916db1 JK |
1264 | vf = ice_get_vf_by_id(pf, vf_id); |
1265 | if (!vf) | |
7c710869 | 1266 | return -EINVAL; |
7c710869 | 1267 | |
fb916db1 JK |
1268 | ret = ice_check_vf_ready_for_cfg(vf); |
1269 | if (ret) | |
3d5985a1 | 1270 | goto out_put_vf; |
7c710869 AV |
1271 | |
1272 | ivi->vf = vf_id; | |
51efbbdf | 1273 | ether_addr_copy(ivi->mac, vf->hw_lan_addr.addr); |
7c710869 AV |
1274 | |
1275 | /* VF configuration for VLAN and applicable QoS */ | |
a19d7f7f BC |
1276 | ivi->vlan = ice_vf_get_port_vlan_id(vf); |
1277 | ivi->qos = ice_vf_get_port_vlan_prio(vf); | |
cbc8b564 BC |
1278 | if (ice_vf_is_port_vlan_ena(vf)) |
1279 | ivi->vlan_proto = cpu_to_be16(ice_vf_get_port_vlan_tpid(vf)); | |
7c710869 AV |
1280 | |
1281 | ivi->trusted = vf->trusted; | |
1282 | ivi->spoofchk = vf->spoofchk; | |
1283 | if (!vf->link_forced) | |
1284 | ivi->linkstate = IFLA_VF_LINK_STATE_AUTO; | |
1285 | else if (vf->link_up) | |
1286 | ivi->linkstate = IFLA_VF_LINK_STATE_ENABLE; | |
1287 | else | |
1288 | ivi->linkstate = IFLA_VF_LINK_STATE_DISABLE; | |
4ecc8633 BC |
1289 | ivi->max_tx_rate = vf->max_tx_rate; |
1290 | ivi->min_tx_rate = vf->min_tx_rate; | |
3d5985a1 JK |
1291 | |
1292 | out_put_vf: | |
1293 | ice_put_vf(vf); | |
1294 | return ret; | |
7c710869 AV |
1295 | } |
1296 | ||
47ebc7b0 BC |
1297 | /** |
1298 | * ice_unicast_mac_exists - check if the unicast MAC exists on the PF's switch | |
1299 | * @pf: PF used to reference the switch's rules | |
1300 | * @umac: unicast MAC to compare against existing switch rules | |
1301 | * | |
1302 | * Return true on the first/any match, else return false | |
1303 | */ | |
1304 | static bool ice_unicast_mac_exists(struct ice_pf *pf, u8 *umac) | |
1305 | { | |
1306 | struct ice_sw_recipe *mac_recipe_list = | |
1307 | &pf->hw.switch_info->recp_list[ICE_SW_LKUP_MAC]; | |
1308 | struct ice_fltr_mgmt_list_entry *list_itr; | |
1309 | struct list_head *rule_head; | |
1310 | struct mutex *rule_lock; /* protect MAC filter list access */ | |
1311 | ||
1312 | rule_head = &mac_recipe_list->filt_rules; | |
1313 | rule_lock = &mac_recipe_list->filt_rule_lock; | |
1314 | ||
1315 | mutex_lock(rule_lock); | |
1316 | list_for_each_entry(list_itr, rule_head, list_entry) { | |
1317 | u8 *existing_mac = &list_itr->fltr_info.l_data.mac.mac_addr[0]; | |
1318 | ||
1319 | if (ether_addr_equal(existing_mac, umac)) { | |
1320 | mutex_unlock(rule_lock); | |
1321 | return true; | |
1322 | } | |
1323 | } | |
1324 | ||
1325 | mutex_unlock(rule_lock); | |
1326 | ||
1327 | return false; | |
1328 | } | |
1329 | ||
7c710869 AV |
1330 | /** |
1331 | * ice_set_vf_mac | |
1332 | * @netdev: network interface device structure | |
1333 | * @vf_id: VF identifier | |
f9867df6 | 1334 | * @mac: MAC address |
7c710869 | 1335 | * |
f9867df6 | 1336 | * program VF MAC address |
7c710869 AV |
1337 | */ |
1338 | int ice_set_vf_mac(struct net_device *netdev, int vf_id, u8 *mac) | |
1339 | { | |
4c66d227 | 1340 | struct ice_pf *pf = ice_netdev_to_pf(netdev); |
7c710869 | 1341 | struct ice_vf *vf; |
c54d209c | 1342 | int ret; |
7c710869 | 1343 | |
f109603a | 1344 | if (is_multicast_ether_addr(mac)) { |
7c710869 AV |
1345 | netdev_err(netdev, "%pM not a valid unicast address\n", mac); |
1346 | return -EINVAL; | |
1347 | } | |
1348 | ||
fb916db1 JK |
1349 | vf = ice_get_vf_by_id(pf, vf_id); |
1350 | if (!vf) | |
1351 | return -EINVAL; | |
1352 | ||
47ebc7b0 | 1353 | /* nothing left to do, unicast MAC already set */ |
f28cd5ce | 1354 | if (ether_addr_equal(vf->dev_lan_addr.addr, mac) && |
3d5985a1 JK |
1355 | ether_addr_equal(vf->hw_lan_addr.addr, mac)) { |
1356 | ret = 0; | |
1357 | goto out_put_vf; | |
1358 | } | |
47ebc7b0 | 1359 | |
c54d209c BC |
1360 | ret = ice_check_vf_ready_for_cfg(vf); |
1361 | if (ret) | |
3d5985a1 | 1362 | goto out_put_vf; |
c54d209c | 1363 | |
47ebc7b0 BC |
1364 | if (ice_unicast_mac_exists(pf, mac)) { |
1365 | netdev_err(netdev, "Unicast MAC %pM already exists on this PF. Preventing setting VF %u unicast MAC address to %pM\n", | |
1366 | mac, vf_id, mac); | |
3d5985a1 JK |
1367 | ret = -EINVAL; |
1368 | goto out_put_vf; | |
47ebc7b0 BC |
1369 | } |
1370 | ||
e6ba5273 BC |
1371 | mutex_lock(&vf->cfg_lock); |
1372 | ||
f109603a BC |
1373 | /* VF is notified of its new MAC via the PF's response to the |
1374 | * VIRTCHNL_OP_GET_VF_RESOURCES message after the VF has been reset | |
7c710869 | 1375 | */ |
f28cd5ce | 1376 | ether_addr_copy(vf->dev_lan_addr.addr, mac); |
51efbbdf | 1377 | ether_addr_copy(vf->hw_lan_addr.addr, mac); |
f109603a BC |
1378 | if (is_zero_ether_addr(mac)) { |
1379 | /* VF will send VIRTCHNL_OP_ADD_ETH_ADDR message with its MAC */ | |
1380 | vf->pf_set_mac = false; | |
1381 | netdev_info(netdev, "Removing MAC on VF %d. VF driver will be reinitialized\n", | |
1382 | vf->vf_id); | |
1383 | } else { | |
1384 | /* PF will add MAC rule for the VF */ | |
1385 | vf->pf_set_mac = true; | |
1386 | netdev_info(netdev, "Setting MAC %pM on VF %d. VF driver will be reinitialized\n", | |
1387 | mac, vf_id); | |
1388 | } | |
7c710869 | 1389 | |
9dbb33da | 1390 | ice_reset_vf(vf, ICE_VF_RESET_NOTIFY); |
e6ba5273 | 1391 | mutex_unlock(&vf->cfg_lock); |
3d5985a1 JK |
1392 | |
1393 | out_put_vf: | |
1394 | ice_put_vf(vf); | |
1395 | return ret; | |
7c710869 AV |
1396 | } |
1397 | ||
1398 | /** | |
1399 | * ice_set_vf_trust | |
1400 | * @netdev: network interface device structure | |
1401 | * @vf_id: VF identifier | |
1402 | * @trusted: Boolean value to enable/disable trusted VF | |
1403 | * | |
1404 | * Enable or disable a given VF as trusted | |
1405 | */ | |
1406 | int ice_set_vf_trust(struct net_device *netdev, int vf_id, bool trusted) | |
1407 | { | |
4c66d227 | 1408 | struct ice_pf *pf = ice_netdev_to_pf(netdev); |
7c710869 | 1409 | struct ice_vf *vf; |
c54d209c | 1410 | int ret; |
7c710869 | 1411 | |
1281b745 WD |
1412 | if (ice_is_eswitch_mode_switchdev(pf)) { |
1413 | dev_info(ice_pf_to_dev(pf), "Trusted VF is forbidden in switchdev mode\n"); | |
1414 | return -EOPNOTSUPP; | |
1415 | } | |
1416 | ||
fb916db1 JK |
1417 | vf = ice_get_vf_by_id(pf, vf_id); |
1418 | if (!vf) | |
7c710869 | 1419 | return -EINVAL; |
7c710869 | 1420 | |
c54d209c BC |
1421 | ret = ice_check_vf_ready_for_cfg(vf); |
1422 | if (ret) | |
3d5985a1 | 1423 | goto out_put_vf; |
7c710869 AV |
1424 | |
1425 | /* Check if already trusted */ | |
3d5985a1 JK |
1426 | if (trusted == vf->trusted) { |
1427 | ret = 0; | |
1428 | goto out_put_vf; | |
1429 | } | |
7c710869 | 1430 | |
e6ba5273 BC |
1431 | mutex_lock(&vf->cfg_lock); |
1432 | ||
7c710869 | 1433 | vf->trusted = trusted; |
9dbb33da | 1434 | ice_reset_vf(vf, ICE_VF_RESET_NOTIFY); |
19cce2c6 | 1435 | dev_info(ice_pf_to_dev(pf), "VF %u is now %strusted\n", |
7c710869 AV |
1436 | vf_id, trusted ? "" : "un"); |
1437 | ||
e6ba5273 BC |
1438 | mutex_unlock(&vf->cfg_lock); |
1439 | ||
3d5985a1 JK |
1440 | out_put_vf: |
1441 | ice_put_vf(vf); | |
1442 | return ret; | |
7c710869 AV |
1443 | } |
1444 | ||
1445 | /** | |
1446 | * ice_set_vf_link_state | |
1447 | * @netdev: network interface device structure | |
1448 | * @vf_id: VF identifier | |
1449 | * @link_state: required link state | |
1450 | * | |
1451 | * Set VF's link state, irrespective of physical link state status | |
1452 | */ | |
1453 | int ice_set_vf_link_state(struct net_device *netdev, int vf_id, int link_state) | |
1454 | { | |
4c66d227 | 1455 | struct ice_pf *pf = ice_netdev_to_pf(netdev); |
7c710869 | 1456 | struct ice_vf *vf; |
c54d209c | 1457 | int ret; |
7c710869 | 1458 | |
fb916db1 JK |
1459 | vf = ice_get_vf_by_id(pf, vf_id); |
1460 | if (!vf) | |
7c710869 | 1461 | return -EINVAL; |
7c710869 | 1462 | |
c54d209c BC |
1463 | ret = ice_check_vf_ready_for_cfg(vf); |
1464 | if (ret) | |
3d5985a1 | 1465 | goto out_put_vf; |
7c710869 | 1466 | |
7c710869 AV |
1467 | switch (link_state) { |
1468 | case IFLA_VF_LINK_STATE_AUTO: | |
1469 | vf->link_forced = false; | |
7c710869 AV |
1470 | break; |
1471 | case IFLA_VF_LINK_STATE_ENABLE: | |
1472 | vf->link_forced = true; | |
1473 | vf->link_up = true; | |
1474 | break; | |
1475 | case IFLA_VF_LINK_STATE_DISABLE: | |
1476 | vf->link_forced = true; | |
1477 | vf->link_up = false; | |
1478 | break; | |
1479 | default: | |
3d5985a1 JK |
1480 | ret = -EINVAL; |
1481 | goto out_put_vf; | |
7c710869 AV |
1482 | } |
1483 | ||
26a91525 | 1484 | ice_vc_notify_vf_link_state(vf); |
7c710869 | 1485 | |
3d5985a1 JK |
1486 | out_put_vf: |
1487 | ice_put_vf(vf); | |
1488 | return ret; | |
7c710869 | 1489 | } |
730fdea4 | 1490 | |
4ecc8633 BC |
1491 | /** |
1492 | * ice_calc_all_vfs_min_tx_rate - calculate cumulative min Tx rate on all VFs | |
1493 | * @pf: PF associated with VFs | |
1494 | */ | |
1495 | static int ice_calc_all_vfs_min_tx_rate(struct ice_pf *pf) | |
1496 | { | |
c4c2c7db JK |
1497 | struct ice_vf *vf; |
1498 | unsigned int bkt; | |
1499 | int rate = 0; | |
4ecc8633 | 1500 | |
3d5985a1 JK |
1501 | rcu_read_lock(); |
1502 | ice_for_each_vf_rcu(pf, bkt, vf) | |
c4c2c7db | 1503 | rate += vf->min_tx_rate; |
3d5985a1 | 1504 | rcu_read_unlock(); |
4ecc8633 BC |
1505 | |
1506 | return rate; | |
1507 | } | |
1508 | ||
1509 | /** | |
1510 | * ice_min_tx_rate_oversubscribed - check if min Tx rate causes oversubscription | |
1511 | * @vf: VF trying to configure min_tx_rate | |
1512 | * @min_tx_rate: min Tx rate in Mbps | |
1513 | * | |
1514 | * Check if the min_tx_rate being passed in will cause oversubscription of total | |
1515 | * min_tx_rate based on the current link speed and all other VFs configured | |
1516 | * min_tx_rate | |
1517 | * | |
1518 | * Return true if the passed min_tx_rate would cause oversubscription, else | |
1519 | * return false | |
1520 | */ | |
1521 | static bool | |
1522 | ice_min_tx_rate_oversubscribed(struct ice_vf *vf, int min_tx_rate) | |
1523 | { | |
1524 | int link_speed_mbps = ice_get_link_speed_mbps(ice_get_vf_vsi(vf)); | |
1525 | int all_vfs_min_tx_rate = ice_calc_all_vfs_min_tx_rate(vf->pf); | |
1526 | ||
1527 | /* this VF's previous rate is being overwritten */ | |
1528 | all_vfs_min_tx_rate -= vf->min_tx_rate; | |
1529 | ||
1530 | if (all_vfs_min_tx_rate + min_tx_rate > link_speed_mbps) { | |
1531 | 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", | |
1532 | min_tx_rate, vf->vf_id, | |
1533 | all_vfs_min_tx_rate + min_tx_rate - link_speed_mbps, | |
1534 | link_speed_mbps); | |
1535 | return true; | |
1536 | } | |
1537 | ||
1538 | return false; | |
1539 | } | |
1540 | ||
1541 | /** | |
1542 | * ice_set_vf_bw - set min/max VF bandwidth | |
1543 | * @netdev: network interface device structure | |
1544 | * @vf_id: VF identifier | |
1545 | * @min_tx_rate: Minimum Tx rate in Mbps | |
1546 | * @max_tx_rate: Maximum Tx rate in Mbps | |
1547 | */ | |
1548 | int | |
1549 | ice_set_vf_bw(struct net_device *netdev, int vf_id, int min_tx_rate, | |
1550 | int max_tx_rate) | |
1551 | { | |
1552 | struct ice_pf *pf = ice_netdev_to_pf(netdev); | |
1553 | struct ice_vsi *vsi; | |
1554 | struct device *dev; | |
1555 | struct ice_vf *vf; | |
1556 | int ret; | |
1557 | ||
1558 | dev = ice_pf_to_dev(pf); | |
fb916db1 JK |
1559 | |
1560 | vf = ice_get_vf_by_id(pf, vf_id); | |
1561 | if (!vf) | |
4ecc8633 BC |
1562 | return -EINVAL; |
1563 | ||
4ecc8633 BC |
1564 | ret = ice_check_vf_ready_for_cfg(vf); |
1565 | if (ret) | |
3d5985a1 | 1566 | goto out_put_vf; |
4ecc8633 BC |
1567 | |
1568 | vsi = ice_get_vf_vsi(vf); | |
1569 | ||
1570 | /* when max_tx_rate is zero that means no max Tx rate limiting, so only | |
1571 | * check if max_tx_rate is non-zero | |
1572 | */ | |
1573 | if (max_tx_rate && min_tx_rate > max_tx_rate) { | |
1574 | dev_err(dev, "Cannot set min Tx rate %d Mbps greater than max Tx rate %d Mbps\n", | |
1575 | min_tx_rate, max_tx_rate); | |
3d5985a1 JK |
1576 | ret = -EINVAL; |
1577 | goto out_put_vf; | |
4ecc8633 BC |
1578 | } |
1579 | ||
1580 | if (min_tx_rate && ice_is_dcb_active(pf)) { | |
1581 | dev_err(dev, "DCB on PF is currently enabled. VF min Tx rate limiting not allowed on this PF.\n"); | |
3d5985a1 JK |
1582 | ret = -EOPNOTSUPP; |
1583 | goto out_put_vf; | |
4ecc8633 BC |
1584 | } |
1585 | ||
3d5985a1 JK |
1586 | if (ice_min_tx_rate_oversubscribed(vf, min_tx_rate)) { |
1587 | ret = -EINVAL; | |
1588 | goto out_put_vf; | |
1589 | } | |
4ecc8633 BC |
1590 | |
1591 | if (vf->min_tx_rate != (unsigned int)min_tx_rate) { | |
1592 | ret = ice_set_min_bw_limit(vsi, (u64)min_tx_rate * 1000); | |
1593 | if (ret) { | |
1594 | dev_err(dev, "Unable to set min-tx-rate for VF %d\n", | |
1595 | vf->vf_id); | |
3d5985a1 | 1596 | goto out_put_vf; |
4ecc8633 BC |
1597 | } |
1598 | ||
1599 | vf->min_tx_rate = min_tx_rate; | |
1600 | } | |
1601 | ||
1602 | if (vf->max_tx_rate != (unsigned int)max_tx_rate) { | |
1603 | ret = ice_set_max_bw_limit(vsi, (u64)max_tx_rate * 1000); | |
1604 | if (ret) { | |
1605 | dev_err(dev, "Unable to set max-tx-rate for VF %d\n", | |
1606 | vf->vf_id); | |
3d5985a1 | 1607 | goto out_put_vf; |
4ecc8633 BC |
1608 | } |
1609 | ||
1610 | vf->max_tx_rate = max_tx_rate; | |
1611 | } | |
1612 | ||
3d5985a1 JK |
1613 | out_put_vf: |
1614 | ice_put_vf(vf); | |
1615 | return ret; | |
4ecc8633 BC |
1616 | } |
1617 | ||
730fdea4 JB |
1618 | /** |
1619 | * ice_get_vf_stats - populate some stats for the VF | |
1620 | * @netdev: the netdev of the PF | |
1621 | * @vf_id: the host OS identifier (0-255) | |
1622 | * @vf_stats: pointer to the OS memory to be initialized | |
1623 | */ | |
1624 | int ice_get_vf_stats(struct net_device *netdev, int vf_id, | |
1625 | struct ifla_vf_stats *vf_stats) | |
1626 | { | |
1627 | struct ice_pf *pf = ice_netdev_to_pf(netdev); | |
1628 | struct ice_eth_stats *stats; | |
1629 | struct ice_vsi *vsi; | |
1630 | struct ice_vf *vf; | |
c54d209c | 1631 | int ret; |
730fdea4 | 1632 | |
fb916db1 JK |
1633 | vf = ice_get_vf_by_id(pf, vf_id); |
1634 | if (!vf) | |
730fdea4 JB |
1635 | return -EINVAL; |
1636 | ||
c54d209c BC |
1637 | ret = ice_check_vf_ready_for_cfg(vf); |
1638 | if (ret) | |
3d5985a1 | 1639 | goto out_put_vf; |
730fdea4 | 1640 | |
c5afbe99 | 1641 | vsi = ice_get_vf_vsi(vf); |
3d5985a1 JK |
1642 | if (!vsi) { |
1643 | ret = -EINVAL; | |
1644 | goto out_put_vf; | |
1645 | } | |
730fdea4 JB |
1646 | |
1647 | ice_update_eth_stats(vsi); | |
1648 | stats = &vsi->eth_stats; | |
1649 | ||
1650 | memset(vf_stats, 0, sizeof(*vf_stats)); | |
1651 | ||
1652 | vf_stats->rx_packets = stats->rx_unicast + stats->rx_broadcast + | |
1653 | stats->rx_multicast; | |
1654 | vf_stats->tx_packets = stats->tx_unicast + stats->tx_broadcast + | |
1655 | stats->tx_multicast; | |
1656 | vf_stats->rx_bytes = stats->rx_bytes; | |
1657 | vf_stats->tx_bytes = stats->tx_bytes; | |
1658 | vf_stats->broadcast = stats->rx_broadcast; | |
1659 | vf_stats->multicast = stats->rx_multicast; | |
1660 | vf_stats->rx_dropped = stats->rx_discards; | |
1661 | vf_stats->tx_dropped = stats->tx_discards; | |
1662 | ||
3d5985a1 JK |
1663 | out_put_vf: |
1664 | ice_put_vf(vf); | |
1665 | return ret; | |
730fdea4 | 1666 | } |
9d5c5a52 | 1667 | |
346f7aa3 JK |
1668 | /** |
1669 | * ice_is_supported_port_vlan_proto - make sure the vlan_proto is supported | |
1670 | * @hw: hardware structure used to check the VLAN mode | |
1671 | * @vlan_proto: VLAN TPID being checked | |
1672 | * | |
1673 | * If the device is configured in Double VLAN Mode (DVM), then both ETH_P_8021Q | |
1674 | * and ETH_P_8021AD are supported. If the device is configured in Single VLAN | |
1675 | * Mode (SVM), then only ETH_P_8021Q is supported. | |
1676 | */ | |
1677 | static bool | |
1678 | ice_is_supported_port_vlan_proto(struct ice_hw *hw, u16 vlan_proto) | |
1679 | { | |
1680 | bool is_supported = false; | |
1681 | ||
1682 | switch (vlan_proto) { | |
1683 | case ETH_P_8021Q: | |
1684 | is_supported = true; | |
1685 | break; | |
1686 | case ETH_P_8021AD: | |
1687 | if (ice_is_dvm_ena(hw)) | |
1688 | is_supported = true; | |
1689 | break; | |
1690 | } | |
1691 | ||
1692 | return is_supported; | |
1693 | } | |
1694 | ||
1695 | /** | |
1696 | * ice_set_vf_port_vlan | |
1697 | * @netdev: network interface device structure | |
1698 | * @vf_id: VF identifier | |
1699 | * @vlan_id: VLAN ID being set | |
1700 | * @qos: priority setting | |
1701 | * @vlan_proto: VLAN protocol | |
1702 | * | |
1703 | * program VF Port VLAN ID and/or QoS | |
1704 | */ | |
1705 | int | |
1706 | ice_set_vf_port_vlan(struct net_device *netdev, int vf_id, u16 vlan_id, u8 qos, | |
1707 | __be16 vlan_proto) | |
1708 | { | |
1709 | struct ice_pf *pf = ice_netdev_to_pf(netdev); | |
1710 | u16 local_vlan_proto = ntohs(vlan_proto); | |
1711 | struct device *dev; | |
1712 | struct ice_vf *vf; | |
1713 | int ret; | |
1714 | ||
1715 | dev = ice_pf_to_dev(pf); | |
1716 | ||
1717 | if (vlan_id >= VLAN_N_VID || qos > 7) { | |
1718 | dev_err(dev, "Invalid Port VLAN parameters for VF %d, ID %d, QoS %d\n", | |
1719 | vf_id, vlan_id, qos); | |
1720 | return -EINVAL; | |
1721 | } | |
1722 | ||
1723 | if (!ice_is_supported_port_vlan_proto(&pf->hw, local_vlan_proto)) { | |
1724 | dev_err(dev, "VF VLAN protocol 0x%04x is not supported\n", | |
1725 | local_vlan_proto); | |
1726 | return -EPROTONOSUPPORT; | |
1727 | } | |
1728 | ||
1729 | vf = ice_get_vf_by_id(pf, vf_id); | |
1730 | if (!vf) | |
1731 | return -EINVAL; | |
1732 | ||
1733 | ret = ice_check_vf_ready_for_cfg(vf); | |
1734 | if (ret) | |
1735 | goto out_put_vf; | |
1736 | ||
1737 | if (ice_vf_get_port_vlan_prio(vf) == qos && | |
1738 | ice_vf_get_port_vlan_tpid(vf) == local_vlan_proto && | |
1739 | ice_vf_get_port_vlan_id(vf) == vlan_id) { | |
1740 | /* duplicate request, so just return success */ | |
1741 | dev_dbg(dev, "Duplicate port VLAN %u, QoS %u, TPID 0x%04x request\n", | |
1742 | vlan_id, qos, local_vlan_proto); | |
1743 | ret = 0; | |
1744 | goto out_put_vf; | |
1745 | } | |
1746 | ||
1747 | mutex_lock(&vf->cfg_lock); | |
1748 | ||
1749 | vf->port_vlan_info = ICE_VLAN(local_vlan_proto, vlan_id, qos); | |
1750 | if (ice_vf_is_port_vlan_ena(vf)) | |
1751 | dev_info(dev, "Setting VLAN %u, QoS %u, TPID 0x%04x on VF %d\n", | |
1752 | vlan_id, qos, local_vlan_proto, vf_id); | |
1753 | else | |
1754 | dev_info(dev, "Clearing port VLAN on VF %d\n", vf_id); | |
1755 | ||
9dbb33da | 1756 | ice_reset_vf(vf, ICE_VF_RESET_NOTIFY); |
346f7aa3 JK |
1757 | mutex_unlock(&vf->cfg_lock); |
1758 | ||
1759 | out_put_vf: | |
1760 | ice_put_vf(vf); | |
1761 | return ret; | |
1762 | } | |
1763 | ||
7438a3b0 PG |
1764 | /** |
1765 | * ice_print_vf_rx_mdd_event - print VF Rx malicious driver detect event | |
1766 | * @vf: pointer to the VF structure | |
1767 | */ | |
1768 | void ice_print_vf_rx_mdd_event(struct ice_vf *vf) | |
1769 | { | |
1770 | struct ice_pf *pf = vf->pf; | |
1771 | struct device *dev; | |
1772 | ||
1773 | dev = ice_pf_to_dev(pf); | |
1774 | ||
1775 | dev_info(dev, "%d Rx Malicious Driver Detection events detected on PF %d VF %d MAC %pM. mdd-auto-reset-vfs=%s\n", | |
1776 | vf->mdd_rx_events.count, pf->hw.pf_id, vf->vf_id, | |
f28cd5ce | 1777 | vf->dev_lan_addr.addr, |
7438a3b0 PG |
1778 | test_bit(ICE_FLAG_MDD_AUTO_RESET_VF, pf->flags) |
1779 | ? "on" : "off"); | |
1780 | } | |
1781 | ||
9d5c5a52 | 1782 | /** |
ef860480 | 1783 | * ice_print_vfs_mdd_events - print VFs malicious driver detect event |
9d5c5a52 PG |
1784 | * @pf: pointer to the PF structure |
1785 | * | |
1786 | * Called from ice_handle_mdd_event to rate limit and print VFs MDD events. | |
1787 | */ | |
1788 | void ice_print_vfs_mdd_events(struct ice_pf *pf) | |
1789 | { | |
1790 | struct device *dev = ice_pf_to_dev(pf); | |
1791 | struct ice_hw *hw = &pf->hw; | |
c4c2c7db JK |
1792 | struct ice_vf *vf; |
1793 | unsigned int bkt; | |
9d5c5a52 PG |
1794 | |
1795 | /* check that there are pending MDD events to print */ | |
7e408e07 | 1796 | if (!test_and_clear_bit(ICE_MDD_VF_PRINT_PENDING, pf->state)) |
9d5c5a52 PG |
1797 | return; |
1798 | ||
1799 | /* VF MDD event logs are rate limited to one second intervals */ | |
000773c0 | 1800 | if (time_is_after_jiffies(pf->vfs.last_printed_mdd_jiffies + HZ * 1)) |
9d5c5a52 PG |
1801 | return; |
1802 | ||
000773c0 | 1803 | pf->vfs.last_printed_mdd_jiffies = jiffies; |
9d5c5a52 | 1804 | |
3d5985a1 | 1805 | mutex_lock(&pf->vfs.table_lock); |
c4c2c7db | 1806 | ice_for_each_vf(pf, bkt, vf) { |
9d5c5a52 PG |
1807 | /* only print Rx MDD event message if there are new events */ |
1808 | if (vf->mdd_rx_events.count != vf->mdd_rx_events.last_printed) { | |
1809 | vf->mdd_rx_events.last_printed = | |
1810 | vf->mdd_rx_events.count; | |
7438a3b0 | 1811 | ice_print_vf_rx_mdd_event(vf); |
9d5c5a52 PG |
1812 | } |
1813 | ||
1814 | /* only print Tx MDD event message if there are new events */ | |
1815 | if (vf->mdd_tx_events.count != vf->mdd_tx_events.last_printed) { | |
1816 | vf->mdd_tx_events.last_printed = | |
1817 | vf->mdd_tx_events.count; | |
1818 | ||
1819 | dev_info(dev, "%d Tx Malicious Driver Detection events detected on PF %d VF %d MAC %pM.\n", | |
c4c2c7db | 1820 | vf->mdd_tx_events.count, hw->pf_id, vf->vf_id, |
f28cd5ce | 1821 | vf->dev_lan_addr.addr); |
9d5c5a52 PG |
1822 | } |
1823 | } | |
3d5985a1 | 1824 | mutex_unlock(&pf->vfs.table_lock); |
9d5c5a52 | 1825 | } |
a54a0b24 NN |
1826 | |
1827 | /** | |
1828 | * ice_restore_all_vfs_msi_state - restore VF MSI state after PF FLR | |
1829 | * @pdev: pointer to a pci_dev structure | |
1830 | * | |
1831 | * Called when recovering from a PF FLR to restore interrupt capability to | |
1832 | * the VFs. | |
1833 | */ | |
1834 | void ice_restore_all_vfs_msi_state(struct pci_dev *pdev) | |
1835 | { | |
a54a0b24 NN |
1836 | u16 vf_id; |
1837 | int pos; | |
1838 | ||
1839 | if (!pci_num_vf(pdev)) | |
1840 | return; | |
1841 | ||
1842 | pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV); | |
1843 | if (pos) { | |
4c26f69d PSJ |
1844 | struct pci_dev *vfdev; |
1845 | ||
a54a0b24 NN |
1846 | pci_read_config_word(pdev, pos + PCI_SRIOV_VF_DID, |
1847 | &vf_id); | |
1848 | vfdev = pci_get_device(pdev->vendor, vf_id, NULL); | |
1849 | while (vfdev) { | |
1850 | if (vfdev->is_virtfn && vfdev->physfn == pdev) | |
1851 | pci_restore_msi_state(vfdev); | |
1852 | vfdev = pci_get_device(pdev->vendor, vf_id, | |
1853 | vfdev); | |
1854 | } | |
1855 | } | |
1856 | } | |
0891c896 VS |
1857 | |
1858 | /** | |
1859 | * ice_is_malicious_vf - helper function to detect a malicious VF | |
1860 | * @pf: ptr to struct ice_pf | |
1861 | * @event: pointer to the AQ event | |
1862 | * @num_msg_proc: the number of messages processed so far | |
1863 | * @num_msg_pending: the number of messages peinding in admin queue | |
1864 | */ | |
1865 | bool | |
1866 | ice_is_malicious_vf(struct ice_pf *pf, struct ice_rq_event_info *event, | |
1867 | u16 num_msg_proc, u16 num_msg_pending) | |
1868 | { | |
1869 | s16 vf_id = le16_to_cpu(event->desc.retval); | |
1870 | struct device *dev = ice_pf_to_dev(pf); | |
1871 | struct ice_mbx_data mbxdata; | |
0891c896 VS |
1872 | bool malvf = false; |
1873 | struct ice_vf *vf; | |
5518ac2a | 1874 | int status; |
0891c896 | 1875 | |
fb916db1 JK |
1876 | vf = ice_get_vf_by_id(pf, vf_id); |
1877 | if (!vf) | |
0891c896 VS |
1878 | return false; |
1879 | ||
0891c896 | 1880 | if (test_bit(ICE_VF_STATE_DIS, vf->vf_states)) |
3d5985a1 | 1881 | goto out_put_vf; |
0891c896 VS |
1882 | |
1883 | mbxdata.num_msg_proc = num_msg_proc; | |
1884 | mbxdata.num_pending_arq = num_msg_pending; | |
1885 | mbxdata.max_num_msgs_mbx = pf->hw.mailboxq.num_rq_entries; | |
1886 | #define ICE_MBX_OVERFLOW_WATERMARK 64 | |
1887 | mbxdata.async_watermark_val = ICE_MBX_OVERFLOW_WATERMARK; | |
1888 | ||
1889 | /* check to see if we have a malicious VF */ | |
1890 | status = ice_mbx_vf_state_handler(&pf->hw, &mbxdata, vf_id, &malvf); | |
1891 | if (status) | |
3d5985a1 | 1892 | goto out_put_vf; |
0891c896 VS |
1893 | |
1894 | if (malvf) { | |
1895 | bool report_vf = false; | |
1896 | ||
1897 | /* if the VF is malicious and we haven't let the user | |
1898 | * know about it, then let them know now | |
1899 | */ | |
000773c0 | 1900 | status = ice_mbx_report_malvf(&pf->hw, pf->vfs.malvfs, |
dc36796e | 1901 | ICE_MAX_SRIOV_VFS, vf_id, |
0891c896 VS |
1902 | &report_vf); |
1903 | if (status) | |
1904 | dev_dbg(dev, "Error reporting malicious VF\n"); | |
1905 | ||
1906 | if (report_vf) { | |
1907 | struct ice_vsi *pf_vsi = ice_get_main_vsi(pf); | |
1908 | ||
1909 | if (pf_vsi) | |
1910 | dev_warn(dev, "VF MAC %pM on PF MAC %pM is generating asynchronous messages and may be overflowing the PF message queue. Please see the Adapter User Guide for more information\n", | |
f28cd5ce | 1911 | &vf->dev_lan_addr.addr[0], |
0891c896 VS |
1912 | pf_vsi->netdev->dev_addr); |
1913 | } | |
0891c896 VS |
1914 | } |
1915 | ||
3d5985a1 JK |
1916 | out_put_vf: |
1917 | ice_put_vf(vf); | |
1918 | return malvf; | |
0891c896 | 1919 | } |