xref: /linux/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c (revision e0bf6c5ca2d3281f231c5f0c9bf145e9513644de)
1 /*******************************************************************************
2 
3   Intel 10 Gigabit PCI Express Linux driver
4   Copyright(c) 1999 - 2014 Intel Corporation.
5 
6   This program is free software; you can redistribute it and/or modify it
7   under the terms and conditions of the GNU General Public License,
8   version 2, as published by the Free Software Foundation.
9 
10   This program is distributed in the hope it will be useful, but WITHOUT
11   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12   FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
13   more details.
14 
15   You should have received a copy of the GNU General Public License along with
16   this program; if not, write to the Free Software Foundation, Inc.,
17   51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
18 
19   The full GNU General Public License is included in this distribution in
20   the file called "COPYING".
21 
22   Contact Information:
23   Linux NICS <linux.nics@intel.com>
24   e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
25   Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
26 
27 *******************************************************************************/
28 
29 #include <linux/types.h>
30 #include <linux/module.h>
31 #include <linux/pci.h>
32 #include <linux/netdevice.h>
33 #include <linux/vmalloc.h>
34 #include <linux/string.h>
35 #include <linux/in.h>
36 #include <linux/ip.h>
37 #include <linux/tcp.h>
38 #include <linux/ipv6.h>
39 #ifdef NETIF_F_HW_VLAN_CTAG_TX
40 #include <linux/if_vlan.h>
41 #endif
42 
43 #include "ixgbe.h"
44 #include "ixgbe_type.h"
45 #include "ixgbe_sriov.h"
46 
47 #ifdef CONFIG_PCI_IOV
48 static int __ixgbe_enable_sriov(struct ixgbe_adapter *adapter)
49 {
50 	struct ixgbe_hw *hw = &adapter->hw;
51 	int num_vf_macvlans, i;
52 	struct vf_macvlans *mv_list;
53 
54 	adapter->flags |= IXGBE_FLAG_SRIOV_ENABLED;
55 	e_info(probe, "SR-IOV enabled with %d VFs\n", adapter->num_vfs);
56 
57 	/* Enable VMDq flag so device will be set in VM mode */
58 	adapter->flags |= IXGBE_FLAG_VMDQ_ENABLED;
59 	if (!adapter->ring_feature[RING_F_VMDQ].limit)
60 		adapter->ring_feature[RING_F_VMDQ].limit = 1;
61 	adapter->ring_feature[RING_F_VMDQ].offset = adapter->num_vfs;
62 
63 	num_vf_macvlans = hw->mac.num_rar_entries -
64 	(IXGBE_MAX_PF_MACVLANS + 1 + adapter->num_vfs);
65 
66 	adapter->mv_list = mv_list = kcalloc(num_vf_macvlans,
67 					     sizeof(struct vf_macvlans),
68 					     GFP_KERNEL);
69 	if (mv_list) {
70 		/* Initialize list of VF macvlans */
71 		INIT_LIST_HEAD(&adapter->vf_mvs.l);
72 		for (i = 0; i < num_vf_macvlans; i++) {
73 			mv_list->vf = -1;
74 			mv_list->free = true;
75 			list_add(&mv_list->l, &adapter->vf_mvs.l);
76 			mv_list++;
77 		}
78 	}
79 
80 	/* Initialize default switching mode VEB */
81 	IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN);
82 	adapter->flags2 |= IXGBE_FLAG2_BRIDGE_MODE_VEB;
83 
84 	/* If call to enable VFs succeeded then allocate memory
85 	 * for per VF control structures.
86 	 */
87 	adapter->vfinfo =
88 		kcalloc(adapter->num_vfs,
89 			sizeof(struct vf_data_storage), GFP_KERNEL);
90 	if (adapter->vfinfo) {
91 		/* limit trafffic classes based on VFs enabled */
92 		if ((adapter->hw.mac.type == ixgbe_mac_82599EB) &&
93 		    (adapter->num_vfs < 16)) {
94 			adapter->dcb_cfg.num_tcs.pg_tcs = MAX_TRAFFIC_CLASS;
95 			adapter->dcb_cfg.num_tcs.pfc_tcs = MAX_TRAFFIC_CLASS;
96 		} else if (adapter->num_vfs < 32) {
97 			adapter->dcb_cfg.num_tcs.pg_tcs = 4;
98 			adapter->dcb_cfg.num_tcs.pfc_tcs = 4;
99 		} else {
100 			adapter->dcb_cfg.num_tcs.pg_tcs = 1;
101 			adapter->dcb_cfg.num_tcs.pfc_tcs = 1;
102 		}
103 
104 		/* Disable RSC when in SR-IOV mode */
105 		adapter->flags2 &= ~(IXGBE_FLAG2_RSC_CAPABLE |
106 				     IXGBE_FLAG2_RSC_ENABLED);
107 
108 		/* enable spoof checking for all VFs */
109 		for (i = 0; i < adapter->num_vfs; i++)
110 			adapter->vfinfo[i].spoofchk_enabled = true;
111 		return 0;
112 	}
113 
114 	return -ENOMEM;
115 }
116 
117 /* Note this function is called when the user wants to enable SR-IOV
118  * VFs using the now deprecated module parameter
119  */
120 void ixgbe_enable_sriov(struct ixgbe_adapter *adapter)
121 {
122 	int pre_existing_vfs = 0;
123 
124 	pre_existing_vfs = pci_num_vf(adapter->pdev);
125 	if (!pre_existing_vfs && !adapter->num_vfs)
126 		return;
127 
128 	/* If there are pre-existing VFs then we have to force
129 	 * use of that many - over ride any module parameter value.
130 	 * This may result from the user unloading the PF driver
131 	 * while VFs were assigned to guest VMs or because the VFs
132 	 * have been created via the new PCI SR-IOV sysfs interface.
133 	 */
134 	if (pre_existing_vfs) {
135 		adapter->num_vfs = pre_existing_vfs;
136 		dev_warn(&adapter->pdev->dev,
137 			 "Virtual Functions already enabled for this device - Please reload all VF drivers to avoid spoofed packet errors\n");
138 	} else {
139 		int err;
140 		/*
141 		 * The 82599 supports up to 64 VFs per physical function
142 		 * but this implementation limits allocation to 63 so that
143 		 * basic networking resources are still available to the
144 		 * physical function.  If the user requests greater thn
145 		 * 63 VFs then it is an error - reset to default of zero.
146 		 */
147 		adapter->num_vfs = min_t(unsigned int, adapter->num_vfs, IXGBE_MAX_VFS_DRV_LIMIT);
148 
149 		err = pci_enable_sriov(adapter->pdev, adapter->num_vfs);
150 		if (err) {
151 			e_err(probe, "Failed to enable PCI sriov: %d\n", err);
152 			adapter->num_vfs = 0;
153 			return;
154 		}
155 	}
156 
157 	if (!__ixgbe_enable_sriov(adapter))
158 		return;
159 
160 	/* If we have gotten to this point then there is no memory available
161 	 * to manage the VF devices - print message and bail.
162 	 */
163 	e_err(probe, "Unable to allocate memory for VF Data Storage - "
164 	      "SRIOV disabled\n");
165 	ixgbe_disable_sriov(adapter);
166 }
167 
168 #endif /* #ifdef CONFIG_PCI_IOV */
169 int ixgbe_disable_sriov(struct ixgbe_adapter *adapter)
170 {
171 	struct ixgbe_hw *hw = &adapter->hw;
172 	u32 gpie;
173 	u32 vmdctl;
174 	int rss;
175 
176 	/* set num VFs to 0 to prevent access to vfinfo */
177 	adapter->num_vfs = 0;
178 
179 	/* free VF control structures */
180 	kfree(adapter->vfinfo);
181 	adapter->vfinfo = NULL;
182 
183 	/* free macvlan list */
184 	kfree(adapter->mv_list);
185 	adapter->mv_list = NULL;
186 
187 	/* if SR-IOV is already disabled then there is nothing to do */
188 	if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED))
189 		return 0;
190 
191 #ifdef CONFIG_PCI_IOV
192 	/*
193 	 * If our VFs are assigned we cannot shut down SR-IOV
194 	 * without causing issues, so just leave the hardware
195 	 * available but disabled
196 	 */
197 	if (pci_vfs_assigned(adapter->pdev)) {
198 		e_dev_warn("Unloading driver while VFs are assigned - VFs will not be deallocated\n");
199 		return -EPERM;
200 	}
201 	/* disable iov and allow time for transactions to clear */
202 	pci_disable_sriov(adapter->pdev);
203 #endif
204 
205 	/* turn off device IOV mode */
206 	IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, 0);
207 	gpie = IXGBE_READ_REG(hw, IXGBE_GPIE);
208 	gpie &= ~IXGBE_GPIE_VTMODE_MASK;
209 	IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie);
210 
211 	/* set default pool back to 0 */
212 	vmdctl = IXGBE_READ_REG(hw, IXGBE_VT_CTL);
213 	vmdctl &= ~IXGBE_VT_CTL_POOL_MASK;
214 	IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vmdctl);
215 	IXGBE_WRITE_FLUSH(hw);
216 
217 	/* Disable VMDq flag so device will be set in VM mode */
218 	if (adapter->ring_feature[RING_F_VMDQ].limit == 1) {
219 		adapter->flags &= ~IXGBE_FLAG_VMDQ_ENABLED;
220 		adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED;
221 		rss = min_t(int, ixgbe_max_rss_indices(adapter),
222 			    num_online_cpus());
223 	} else {
224 		rss = min_t(int, IXGBE_MAX_L2A_QUEUES, num_online_cpus());
225 	}
226 
227 	adapter->ring_feature[RING_F_VMDQ].offset = 0;
228 	adapter->ring_feature[RING_F_RSS].limit = rss;
229 
230 	/* take a breather then clean up driver data */
231 	msleep(100);
232 	return 0;
233 }
234 
235 static int ixgbe_pci_sriov_enable(struct pci_dev *dev, int num_vfs)
236 {
237 #ifdef CONFIG_PCI_IOV
238 	struct ixgbe_adapter *adapter = pci_get_drvdata(dev);
239 	int err = 0;
240 	int i;
241 	int pre_existing_vfs = pci_num_vf(dev);
242 
243 	if (pre_existing_vfs && pre_existing_vfs != num_vfs)
244 		err = ixgbe_disable_sriov(adapter);
245 	else if (pre_existing_vfs && pre_existing_vfs == num_vfs)
246 		return num_vfs;
247 
248 	if (err)
249 		return err;
250 
251 	/* While the SR-IOV capability structure reports total VFs to be 64,
252 	 * we have to limit the actual number allocated based on two factors.
253 	 * First, we reserve some transmit/receive resources for the PF.
254 	 * Second, VMDQ also uses the same pools that SR-IOV does. We need to
255 	 * account for this, so that we don't accidentally allocate more VFs
256 	 * than we have available pools. The PCI bus driver already checks for
257 	 * other values out of range.
258 	 */
259 	if ((num_vfs + adapter->num_rx_pools) > IXGBE_MAX_VF_FUNCTIONS)
260 		return -EPERM;
261 
262 	adapter->num_vfs = num_vfs;
263 
264 	err = __ixgbe_enable_sriov(adapter);
265 	if (err)
266 		return  err;
267 
268 	for (i = 0; i < adapter->num_vfs; i++)
269 		ixgbe_vf_configuration(dev, (i | 0x10000000));
270 
271 	err = pci_enable_sriov(dev, num_vfs);
272 	if (err) {
273 		e_dev_warn("Failed to enable PCI sriov: %d\n", err);
274 		return err;
275 	}
276 	ixgbe_sriov_reinit(adapter);
277 
278 	return num_vfs;
279 #else
280 	return 0;
281 #endif
282 }
283 
284 static int ixgbe_pci_sriov_disable(struct pci_dev *dev)
285 {
286 	struct ixgbe_adapter *adapter = pci_get_drvdata(dev);
287 	int err;
288 #ifdef CONFIG_PCI_IOV
289 	u32 current_flags = adapter->flags;
290 #endif
291 
292 	err = ixgbe_disable_sriov(adapter);
293 
294 	/* Only reinit if no error and state changed */
295 #ifdef CONFIG_PCI_IOV
296 	if (!err && current_flags != adapter->flags)
297 		ixgbe_sriov_reinit(adapter);
298 #endif
299 
300 	return err;
301 }
302 
303 int ixgbe_pci_sriov_configure(struct pci_dev *dev, int num_vfs)
304 {
305 	if (num_vfs == 0)
306 		return ixgbe_pci_sriov_disable(dev);
307 	else
308 		return ixgbe_pci_sriov_enable(dev, num_vfs);
309 }
310 
311 static int ixgbe_set_vf_multicasts(struct ixgbe_adapter *adapter,
312 				   u32 *msgbuf, u32 vf)
313 {
314 	int entries = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK)
315 		       >> IXGBE_VT_MSGINFO_SHIFT;
316 	u16 *hash_list = (u16 *)&msgbuf[1];
317 	struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
318 	struct ixgbe_hw *hw = &adapter->hw;
319 	int i;
320 	u32 vector_bit;
321 	u32 vector_reg;
322 	u32 mta_reg;
323 	u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
324 
325 	/* only so many hash values supported */
326 	entries = min(entries, IXGBE_MAX_VF_MC_ENTRIES);
327 
328 	/*
329 	 * salt away the number of multi cast addresses assigned
330 	 * to this VF for later use to restore when the PF multi cast
331 	 * list changes
332 	 */
333 	vfinfo->num_vf_mc_hashes = entries;
334 
335 	/*
336 	 * VFs are limited to using the MTA hash table for their multicast
337 	 * addresses
338 	 */
339 	for (i = 0; i < entries; i++) {
340 		vfinfo->vf_mc_hashes[i] = hash_list[i];
341 	}
342 
343 	for (i = 0; i < vfinfo->num_vf_mc_hashes; i++) {
344 		vector_reg = (vfinfo->vf_mc_hashes[i] >> 5) & 0x7F;
345 		vector_bit = vfinfo->vf_mc_hashes[i] & 0x1F;
346 		mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));
347 		mta_reg |= (1 << vector_bit);
348 		IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);
349 	}
350 	vmolr |= IXGBE_VMOLR_ROMPE;
351 	IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
352 
353 	return 0;
354 }
355 
356 #ifdef CONFIG_PCI_IOV
357 void ixgbe_restore_vf_multicasts(struct ixgbe_adapter *adapter)
358 {
359 	struct ixgbe_hw *hw = &adapter->hw;
360 	struct vf_data_storage *vfinfo;
361 	int i, j;
362 	u32 vector_bit;
363 	u32 vector_reg;
364 	u32 mta_reg;
365 
366 	for (i = 0; i < adapter->num_vfs; i++) {
367 		u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(i));
368 		vfinfo = &adapter->vfinfo[i];
369 		for (j = 0; j < vfinfo->num_vf_mc_hashes; j++) {
370 			hw->addr_ctrl.mta_in_use++;
371 			vector_reg = (vfinfo->vf_mc_hashes[j] >> 5) & 0x7F;
372 			vector_bit = vfinfo->vf_mc_hashes[j] & 0x1F;
373 			mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));
374 			mta_reg |= (1 << vector_bit);
375 			IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);
376 		}
377 
378 		if (vfinfo->num_vf_mc_hashes)
379 			vmolr |= IXGBE_VMOLR_ROMPE;
380 		else
381 			vmolr &= ~IXGBE_VMOLR_ROMPE;
382 		IXGBE_WRITE_REG(hw, IXGBE_VMOLR(i), vmolr);
383 	}
384 
385 	/* Restore any VF macvlans */
386 	ixgbe_full_sync_mac_table(adapter);
387 }
388 #endif
389 
390 static int ixgbe_set_vf_vlan(struct ixgbe_adapter *adapter, int add, int vid,
391 			     u32 vf)
392 {
393 	/* VLAN 0 is a special case, don't allow it to be removed */
394 	if (!vid && !add)
395 		return 0;
396 
397 	return adapter->hw.mac.ops.set_vfta(&adapter->hw, vid, vf, (bool)add);
398 }
399 
400 static s32 ixgbe_set_vf_lpe(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf)
401 {
402 	struct ixgbe_hw *hw = &adapter->hw;
403 	int max_frame = msgbuf[1];
404 	u32 max_frs;
405 
406 	/*
407 	 * For 82599EB we have to keep all PFs and VFs operating with
408 	 * the same max_frame value in order to avoid sending an oversize
409 	 * frame to a VF.  In order to guarantee this is handled correctly
410 	 * for all cases we have several special exceptions to take into
411 	 * account before we can enable the VF for receive
412 	 */
413 	if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
414 		struct net_device *dev = adapter->netdev;
415 		int pf_max_frame = dev->mtu + ETH_HLEN;
416 		u32 reg_offset, vf_shift, vfre;
417 		s32 err = 0;
418 
419 #ifdef CONFIG_FCOE
420 		if (dev->features & NETIF_F_FCOE_MTU)
421 			pf_max_frame = max_t(int, pf_max_frame,
422 					     IXGBE_FCOE_JUMBO_FRAME_SIZE);
423 
424 #endif /* CONFIG_FCOE */
425 		switch (adapter->vfinfo[vf].vf_api) {
426 		case ixgbe_mbox_api_11:
427 			/*
428 			 * Version 1.1 supports jumbo frames on VFs if PF has
429 			 * jumbo frames enabled which means legacy VFs are
430 			 * disabled
431 			 */
432 			if (pf_max_frame > ETH_FRAME_LEN)
433 				break;
434 		default:
435 			/*
436 			 * If the PF or VF are running w/ jumbo frames enabled
437 			 * we need to shut down the VF Rx path as we cannot
438 			 * support jumbo frames on legacy VFs
439 			 */
440 			if ((pf_max_frame > ETH_FRAME_LEN) ||
441 			    (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN)))
442 				err = -EINVAL;
443 			break;
444 		}
445 
446 		/* determine VF receive enable location */
447 		vf_shift = vf % 32;
448 		reg_offset = vf / 32;
449 
450 		/* enable or disable receive depending on error */
451 		vfre = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset));
452 		if (err)
453 			vfre &= ~(1 << vf_shift);
454 		else
455 			vfre |= 1 << vf_shift;
456 		IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), vfre);
457 
458 		if (err) {
459 			e_err(drv, "VF max_frame %d out of range\n", max_frame);
460 			return err;
461 		}
462 	}
463 
464 	/* MTU < 68 is an error and causes problems on some kernels */
465 	if (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE) {
466 		e_err(drv, "VF max_frame %d out of range\n", max_frame);
467 		return -EINVAL;
468 	}
469 
470 	/* pull current max frame size from hardware */
471 	max_frs = IXGBE_READ_REG(hw, IXGBE_MAXFRS);
472 	max_frs &= IXGBE_MHADD_MFS_MASK;
473 	max_frs >>= IXGBE_MHADD_MFS_SHIFT;
474 
475 	if (max_frs < max_frame) {
476 		max_frs = max_frame << IXGBE_MHADD_MFS_SHIFT;
477 		IXGBE_WRITE_REG(hw, IXGBE_MAXFRS, max_frs);
478 	}
479 
480 	e_info(hw, "VF requests change max MTU to %d\n", max_frame);
481 
482 	return 0;
483 }
484 
485 static void ixgbe_set_vmolr(struct ixgbe_hw *hw, u32 vf, bool aupe)
486 {
487 	u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
488 	vmolr |= IXGBE_VMOLR_BAM;
489 	if (aupe)
490 		vmolr |= IXGBE_VMOLR_AUPE;
491 	else
492 		vmolr &= ~IXGBE_VMOLR_AUPE;
493 	IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
494 }
495 
496 static void ixgbe_clear_vmvir(struct ixgbe_adapter *adapter, u32 vf)
497 {
498 	struct ixgbe_hw *hw = &adapter->hw;
499 
500 	IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), 0);
501 }
502 static inline void ixgbe_vf_reset_event(struct ixgbe_adapter *adapter, u32 vf)
503 {
504 	struct ixgbe_hw *hw = &adapter->hw;
505 	struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
506 	u8 num_tcs = netdev_get_num_tc(adapter->netdev);
507 
508 	/* add PF assigned VLAN or VLAN 0 */
509 	ixgbe_set_vf_vlan(adapter, true, vfinfo->pf_vlan, vf);
510 
511 	/* reset offloads to defaults */
512 	ixgbe_set_vmolr(hw, vf, !vfinfo->pf_vlan);
513 
514 	/* set outgoing tags for VFs */
515 	if (!vfinfo->pf_vlan && !vfinfo->pf_qos && !num_tcs) {
516 		ixgbe_clear_vmvir(adapter, vf);
517 	} else {
518 		if (vfinfo->pf_qos || !num_tcs)
519 			ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
520 					vfinfo->pf_qos, vf);
521 		else
522 			ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
523 					adapter->default_up, vf);
524 
525 		if (vfinfo->spoofchk_enabled)
526 			hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf);
527 	}
528 
529 	/* reset multicast table array for vf */
530 	adapter->vfinfo[vf].num_vf_mc_hashes = 0;
531 
532 	/* Flush and reset the mta with the new values */
533 	ixgbe_set_rx_mode(adapter->netdev);
534 
535 	ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf);
536 
537 	/* reset VF api back to unknown */
538 	adapter->vfinfo[vf].vf_api = ixgbe_mbox_api_10;
539 }
540 
541 static int ixgbe_set_vf_mac(struct ixgbe_adapter *adapter,
542 			    int vf, unsigned char *mac_addr)
543 {
544 	ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf);
545 	memcpy(adapter->vfinfo[vf].vf_mac_addresses, mac_addr, ETH_ALEN);
546 	ixgbe_add_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf);
547 
548 	return 0;
549 }
550 
551 static int ixgbe_set_vf_macvlan(struct ixgbe_adapter *adapter,
552 				int vf, int index, unsigned char *mac_addr)
553 {
554 	struct list_head *pos;
555 	struct vf_macvlans *entry;
556 
557 	if (index <= 1) {
558 		list_for_each(pos, &adapter->vf_mvs.l) {
559 			entry = list_entry(pos, struct vf_macvlans, l);
560 			if (entry->vf == vf) {
561 				entry->vf = -1;
562 				entry->free = true;
563 				entry->is_macvlan = false;
564 				ixgbe_del_mac_filter(adapter,
565 						     entry->vf_macvlan, vf);
566 			}
567 		}
568 	}
569 
570 	/*
571 	 * If index was zero then we were asked to clear the uc list
572 	 * for the VF.  We're done.
573 	 */
574 	if (!index)
575 		return 0;
576 
577 	entry = NULL;
578 
579 	list_for_each(pos, &adapter->vf_mvs.l) {
580 		entry = list_entry(pos, struct vf_macvlans, l);
581 		if (entry->free)
582 			break;
583 	}
584 
585 	/*
586 	 * If we traversed the entire list and didn't find a free entry
587 	 * then we're out of space on the RAR table.  Also entry may
588 	 * be NULL because the original memory allocation for the list
589 	 * failed, which is not fatal but does mean we can't support
590 	 * VF requests for MACVLAN because we couldn't allocate
591 	 * memory for the list management required.
592 	 */
593 	if (!entry || !entry->free)
594 		return -ENOSPC;
595 
596 	entry->free = false;
597 	entry->is_macvlan = true;
598 	entry->vf = vf;
599 	memcpy(entry->vf_macvlan, mac_addr, ETH_ALEN);
600 
601 	ixgbe_add_mac_filter(adapter, mac_addr, vf);
602 
603 	return 0;
604 }
605 
606 int ixgbe_vf_configuration(struct pci_dev *pdev, unsigned int event_mask)
607 {
608 	struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
609 	unsigned int vfn = (event_mask & 0x3f);
610 
611 	bool enable = ((event_mask & 0x10000000U) != 0);
612 
613 	if (enable)
614 		eth_zero_addr(adapter->vfinfo[vfn].vf_mac_addresses);
615 
616 	return 0;
617 }
618 
619 static inline void ixgbe_write_qde(struct ixgbe_adapter *adapter, u32 vf,
620 				   u32 qde)
621 {
622 	struct ixgbe_hw *hw = &adapter->hw;
623 	struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
624 	u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
625 	int i;
626 
627 	for (i = vf * q_per_pool; i < ((vf + 1) * q_per_pool); i++) {
628 		u32 reg;
629 
630 		/* flush previous write */
631 		IXGBE_WRITE_FLUSH(hw);
632 
633 		/* indicate to hardware that we want to set drop enable */
634 		reg = IXGBE_QDE_WRITE | IXGBE_QDE_ENABLE;
635 		reg |= i <<  IXGBE_QDE_IDX_SHIFT;
636 		IXGBE_WRITE_REG(hw, IXGBE_QDE, reg);
637 	}
638 }
639 
640 static int ixgbe_vf_reset_msg(struct ixgbe_adapter *adapter, u32 vf)
641 {
642 	struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
643 	struct ixgbe_hw *hw = &adapter->hw;
644 	unsigned char *vf_mac = adapter->vfinfo[vf].vf_mac_addresses;
645 	u32 reg, reg_offset, vf_shift;
646 	u32 msgbuf[4] = {0, 0, 0, 0};
647 	u8 *addr = (u8 *)(&msgbuf[1]);
648 	u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
649 	int i;
650 
651 	e_info(probe, "VF Reset msg received from vf %d\n", vf);
652 
653 	/* reset the filters for the device */
654 	ixgbe_vf_reset_event(adapter, vf);
655 
656 	/* set vf mac address */
657 	if (!is_zero_ether_addr(vf_mac))
658 		ixgbe_set_vf_mac(adapter, vf, vf_mac);
659 
660 	vf_shift = vf % 32;
661 	reg_offset = vf / 32;
662 
663 	/* enable transmit for vf */
664 	reg = IXGBE_READ_REG(hw, IXGBE_VFTE(reg_offset));
665 	reg |= 1 << vf_shift;
666 	IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), reg);
667 
668 	/* force drop enable for all VF Rx queues */
669 	ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE);
670 
671 	/* enable receive for vf */
672 	reg = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset));
673 	reg |= 1 << vf_shift;
674 	/*
675 	 * The 82599 cannot support a mix of jumbo and non-jumbo PF/VFs.
676 	 * For more info take a look at ixgbe_set_vf_lpe
677 	 */
678 	if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
679 		struct net_device *dev = adapter->netdev;
680 		int pf_max_frame = dev->mtu + ETH_HLEN;
681 
682 #ifdef CONFIG_FCOE
683 		if (dev->features & NETIF_F_FCOE_MTU)
684 			pf_max_frame = max_t(int, pf_max_frame,
685 					     IXGBE_FCOE_JUMBO_FRAME_SIZE);
686 
687 #endif /* CONFIG_FCOE */
688 		if (pf_max_frame > ETH_FRAME_LEN)
689 			reg &= ~(1 << vf_shift);
690 	}
691 	IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), reg);
692 
693 	/* enable VF mailbox for further messages */
694 	adapter->vfinfo[vf].clear_to_send = true;
695 
696 	/* Enable counting of spoofed packets in the SSVPC register */
697 	reg = IXGBE_READ_REG(hw, IXGBE_VMECM(reg_offset));
698 	reg |= (1 << vf_shift);
699 	IXGBE_WRITE_REG(hw, IXGBE_VMECM(reg_offset), reg);
700 
701 	/*
702 	 * Reset the VFs TDWBAL and TDWBAH registers
703 	 * which are not cleared by an FLR
704 	 */
705 	for (i = 0; i < q_per_pool; i++) {
706 		IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBAHn(q_per_pool, vf, i), 0);
707 		IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBALn(q_per_pool, vf, i), 0);
708 	}
709 
710 	/* reply to reset with ack and vf mac address */
711 	msgbuf[0] = IXGBE_VF_RESET;
712 	if (!is_zero_ether_addr(vf_mac)) {
713 		msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK;
714 		memcpy(addr, vf_mac, ETH_ALEN);
715 	} else {
716 		msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
717 		dev_warn(&adapter->pdev->dev,
718 			 "VF %d has no MAC address assigned, you may have to assign one manually\n",
719 			 vf);
720 	}
721 
722 	/*
723 	 * Piggyback the multicast filter type so VF can compute the
724 	 * correct vectors
725 	 */
726 	msgbuf[3] = hw->mac.mc_filter_type;
727 	ixgbe_write_mbx(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN, vf);
728 
729 	return 0;
730 }
731 
732 static int ixgbe_set_vf_mac_addr(struct ixgbe_adapter *adapter,
733 				 u32 *msgbuf, u32 vf)
734 {
735 	u8 *new_mac = ((u8 *)(&msgbuf[1]));
736 
737 	if (!is_valid_ether_addr(new_mac)) {
738 		e_warn(drv, "VF %d attempted to set invalid mac\n", vf);
739 		return -1;
740 	}
741 
742 	if (adapter->vfinfo[vf].pf_set_mac &&
743 	    !ether_addr_equal(adapter->vfinfo[vf].vf_mac_addresses, new_mac)) {
744 		e_warn(drv,
745 		       "VF %d attempted to override administratively set MAC address\n"
746 		       "Reload the VF driver to resume operations\n",
747 		       vf);
748 		return -1;
749 	}
750 
751 	return ixgbe_set_vf_mac(adapter, vf, new_mac) < 0;
752 }
753 
754 static int ixgbe_find_vlvf_entry(struct ixgbe_hw *hw, u32 vlan)
755 {
756 	u32 vlvf;
757 	s32 regindex;
758 
759 	/* short cut the special case */
760 	if (vlan == 0)
761 		return 0;
762 
763 	/* Search for the vlan id in the VLVF entries */
764 	for (regindex = 1; regindex < IXGBE_VLVF_ENTRIES; regindex++) {
765 		vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(regindex));
766 		if ((vlvf & VLAN_VID_MASK) == vlan)
767 			break;
768 	}
769 
770 	/* Return a negative value if not found */
771 	if (regindex >= IXGBE_VLVF_ENTRIES)
772 		regindex = -1;
773 
774 	return regindex;
775 }
776 
777 static int ixgbe_set_vf_vlan_msg(struct ixgbe_adapter *adapter,
778 				 u32 *msgbuf, u32 vf)
779 {
780 	struct ixgbe_hw *hw = &adapter->hw;
781 	int add = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> IXGBE_VT_MSGINFO_SHIFT;
782 	int vid = (msgbuf[1] & IXGBE_VLVF_VLANID_MASK);
783 	int err;
784 	s32 reg_ndx;
785 	u32 vlvf;
786 	u32 bits;
787 	u8 tcs = netdev_get_num_tc(adapter->netdev);
788 
789 	if (adapter->vfinfo[vf].pf_vlan || tcs) {
790 		e_warn(drv,
791 		       "VF %d attempted to override administratively set VLAN configuration\n"
792 		       "Reload the VF driver to resume operations\n",
793 		       vf);
794 		return -1;
795 	}
796 
797 	if (add)
798 		adapter->vfinfo[vf].vlan_count++;
799 	else if (adapter->vfinfo[vf].vlan_count)
800 		adapter->vfinfo[vf].vlan_count--;
801 
802 	/* in case of promiscuous mode any VLAN filter set for a VF must
803 	 * also have the PF pool added to it.
804 	 */
805 	if (add && adapter->netdev->flags & IFF_PROMISC)
806 		err = ixgbe_set_vf_vlan(adapter, add, vid, VMDQ_P(0));
807 
808 	err = ixgbe_set_vf_vlan(adapter, add, vid, vf);
809 	if (!err && adapter->vfinfo[vf].spoofchk_enabled)
810 		hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf);
811 
812 	/* Go through all the checks to see if the VLAN filter should
813 	 * be wiped completely.
814 	 */
815 	if (!add && adapter->netdev->flags & IFF_PROMISC) {
816 		reg_ndx = ixgbe_find_vlvf_entry(hw, vid);
817 		if (reg_ndx < 0)
818 			return err;
819 		vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(reg_ndx));
820 		/* See if any other pools are set for this VLAN filter
821 		 * entry other than the PF.
822 		 */
823 		if (VMDQ_P(0) < 32) {
824 			bits = IXGBE_READ_REG(hw, IXGBE_VLVFB(reg_ndx * 2));
825 			bits &= ~(1 << VMDQ_P(0));
826 			bits |= IXGBE_READ_REG(hw,
827 					       IXGBE_VLVFB(reg_ndx * 2) + 1);
828 		} else {
829 			bits = IXGBE_READ_REG(hw,
830 					      IXGBE_VLVFB(reg_ndx * 2) + 1);
831 			bits &= ~(1 << (VMDQ_P(0) - 32));
832 			bits |= IXGBE_READ_REG(hw, IXGBE_VLVFB(reg_ndx * 2));
833 		}
834 
835 		/* If the filter was removed then ensure PF pool bit
836 		 * is cleared if the PF only added itself to the pool
837 		 * because the PF is in promiscuous mode.
838 		 */
839 		if ((vlvf & VLAN_VID_MASK) == vid &&
840 		    !test_bit(vid, adapter->active_vlans) && !bits)
841 			ixgbe_set_vf_vlan(adapter, add, vid, VMDQ_P(0));
842 	}
843 
844 	return err;
845 }
846 
847 static int ixgbe_set_vf_macvlan_msg(struct ixgbe_adapter *adapter,
848 				    u32 *msgbuf, u32 vf)
849 {
850 	u8 *new_mac = ((u8 *)(&msgbuf[1]));
851 	int index = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >>
852 		    IXGBE_VT_MSGINFO_SHIFT;
853 	int err;
854 
855 	if (adapter->vfinfo[vf].pf_set_mac && index > 0) {
856 		e_warn(drv,
857 		       "VF %d requested MACVLAN filter but is administratively denied\n",
858 		       vf);
859 		return -1;
860 	}
861 
862 	/* An non-zero index indicates the VF is setting a filter */
863 	if (index) {
864 		if (!is_valid_ether_addr(new_mac)) {
865 			e_warn(drv, "VF %d attempted to set invalid mac\n", vf);
866 			return -1;
867 		}
868 
869 		/*
870 		 * If the VF is allowed to set MAC filters then turn off
871 		 * anti-spoofing to avoid false positives.
872 		 */
873 		if (adapter->vfinfo[vf].spoofchk_enabled)
874 			ixgbe_ndo_set_vf_spoofchk(adapter->netdev, vf, false);
875 	}
876 
877 	err = ixgbe_set_vf_macvlan(adapter, vf, index, new_mac);
878 	if (err == -ENOSPC)
879 		e_warn(drv,
880 		       "VF %d has requested a MACVLAN filter but there is no space for it\n",
881 		       vf);
882 
883 	return err < 0;
884 }
885 
886 static int ixgbe_negotiate_vf_api(struct ixgbe_adapter *adapter,
887 				  u32 *msgbuf, u32 vf)
888 {
889 	int api = msgbuf[1];
890 
891 	switch (api) {
892 	case ixgbe_mbox_api_10:
893 	case ixgbe_mbox_api_11:
894 		adapter->vfinfo[vf].vf_api = api;
895 		return 0;
896 	default:
897 		break;
898 	}
899 
900 	e_info(drv, "VF %d requested invalid api version %u\n", vf, api);
901 
902 	return -1;
903 }
904 
905 static int ixgbe_get_vf_queues(struct ixgbe_adapter *adapter,
906 			       u32 *msgbuf, u32 vf)
907 {
908 	struct net_device *dev = adapter->netdev;
909 	struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
910 	unsigned int default_tc = 0;
911 	u8 num_tcs = netdev_get_num_tc(dev);
912 
913 	/* verify the PF is supporting the correct APIs */
914 	switch (adapter->vfinfo[vf].vf_api) {
915 	case ixgbe_mbox_api_20:
916 	case ixgbe_mbox_api_11:
917 		break;
918 	default:
919 		return -1;
920 	}
921 
922 	/* only allow 1 Tx queue for bandwidth limiting */
923 	msgbuf[IXGBE_VF_TX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);
924 	msgbuf[IXGBE_VF_RX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);
925 
926 	/* if TCs > 1 determine which TC belongs to default user priority */
927 	if (num_tcs > 1)
928 		default_tc = netdev_get_prio_tc_map(dev, adapter->default_up);
929 
930 	/* notify VF of need for VLAN tag stripping, and correct queue */
931 	if (num_tcs)
932 		msgbuf[IXGBE_VF_TRANS_VLAN] = num_tcs;
933 	else if (adapter->vfinfo[vf].pf_vlan || adapter->vfinfo[vf].pf_qos)
934 		msgbuf[IXGBE_VF_TRANS_VLAN] = 1;
935 	else
936 		msgbuf[IXGBE_VF_TRANS_VLAN] = 0;
937 
938 	/* notify VF of default queue */
939 	msgbuf[IXGBE_VF_DEF_QUEUE] = default_tc;
940 
941 	return 0;
942 }
943 
944 static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf)
945 {
946 	u32 mbx_size = IXGBE_VFMAILBOX_SIZE;
947 	u32 msgbuf[IXGBE_VFMAILBOX_SIZE];
948 	struct ixgbe_hw *hw = &adapter->hw;
949 	s32 retval;
950 
951 	retval = ixgbe_read_mbx(hw, msgbuf, mbx_size, vf);
952 
953 	if (retval) {
954 		pr_err("Error receiving message from VF\n");
955 		return retval;
956 	}
957 
958 	/* this is a message we already processed, do nothing */
959 	if (msgbuf[0] & (IXGBE_VT_MSGTYPE_ACK | IXGBE_VT_MSGTYPE_NACK))
960 		return 0;
961 
962 	/* flush the ack before we write any messages back */
963 	IXGBE_WRITE_FLUSH(hw);
964 
965 	if (msgbuf[0] == IXGBE_VF_RESET)
966 		return ixgbe_vf_reset_msg(adapter, vf);
967 
968 	/*
969 	 * until the vf completes a virtual function reset it should not be
970 	 * allowed to start any configuration.
971 	 */
972 	if (!adapter->vfinfo[vf].clear_to_send) {
973 		msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
974 		ixgbe_write_mbx(hw, msgbuf, 1, vf);
975 		return 0;
976 	}
977 
978 	switch ((msgbuf[0] & 0xFFFF)) {
979 	case IXGBE_VF_SET_MAC_ADDR:
980 		retval = ixgbe_set_vf_mac_addr(adapter, msgbuf, vf);
981 		break;
982 	case IXGBE_VF_SET_MULTICAST:
983 		retval = ixgbe_set_vf_multicasts(adapter, msgbuf, vf);
984 		break;
985 	case IXGBE_VF_SET_VLAN:
986 		retval = ixgbe_set_vf_vlan_msg(adapter, msgbuf, vf);
987 		break;
988 	case IXGBE_VF_SET_LPE:
989 		retval = ixgbe_set_vf_lpe(adapter, msgbuf, vf);
990 		break;
991 	case IXGBE_VF_SET_MACVLAN:
992 		retval = ixgbe_set_vf_macvlan_msg(adapter, msgbuf, vf);
993 		break;
994 	case IXGBE_VF_API_NEGOTIATE:
995 		retval = ixgbe_negotiate_vf_api(adapter, msgbuf, vf);
996 		break;
997 	case IXGBE_VF_GET_QUEUES:
998 		retval = ixgbe_get_vf_queues(adapter, msgbuf, vf);
999 		break;
1000 	default:
1001 		e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]);
1002 		retval = IXGBE_ERR_MBX;
1003 		break;
1004 	}
1005 
1006 	/* notify the VF of the results of what it sent us */
1007 	if (retval)
1008 		msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
1009 	else
1010 		msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK;
1011 
1012 	msgbuf[0] |= IXGBE_VT_MSGTYPE_CTS;
1013 
1014 	ixgbe_write_mbx(hw, msgbuf, mbx_size, vf);
1015 
1016 	return retval;
1017 }
1018 
1019 static void ixgbe_rcv_ack_from_vf(struct ixgbe_adapter *adapter, u32 vf)
1020 {
1021 	struct ixgbe_hw *hw = &adapter->hw;
1022 	u32 msg = IXGBE_VT_MSGTYPE_NACK;
1023 
1024 	/* if device isn't clear to send it shouldn't be reading either */
1025 	if (!adapter->vfinfo[vf].clear_to_send)
1026 		ixgbe_write_mbx(hw, &msg, 1, vf);
1027 }
1028 
1029 void ixgbe_msg_task(struct ixgbe_adapter *adapter)
1030 {
1031 	struct ixgbe_hw *hw = &adapter->hw;
1032 	u32 vf;
1033 
1034 	for (vf = 0; vf < adapter->num_vfs; vf++) {
1035 		/* process any reset requests */
1036 		if (!ixgbe_check_for_rst(hw, vf))
1037 			ixgbe_vf_reset_event(adapter, vf);
1038 
1039 		/* process any messages pending */
1040 		if (!ixgbe_check_for_msg(hw, vf))
1041 			ixgbe_rcv_msg_from_vf(adapter, vf);
1042 
1043 		/* process any acks */
1044 		if (!ixgbe_check_for_ack(hw, vf))
1045 			ixgbe_rcv_ack_from_vf(adapter, vf);
1046 	}
1047 }
1048 
1049 void ixgbe_disable_tx_rx(struct ixgbe_adapter *adapter)
1050 {
1051 	struct ixgbe_hw *hw = &adapter->hw;
1052 
1053 	/* disable transmit and receive for all vfs */
1054 	IXGBE_WRITE_REG(hw, IXGBE_VFTE(0), 0);
1055 	IXGBE_WRITE_REG(hw, IXGBE_VFTE(1), 0);
1056 
1057 	IXGBE_WRITE_REG(hw, IXGBE_VFRE(0), 0);
1058 	IXGBE_WRITE_REG(hw, IXGBE_VFRE(1), 0);
1059 }
1060 
1061 void ixgbe_ping_all_vfs(struct ixgbe_adapter *adapter)
1062 {
1063 	struct ixgbe_hw *hw = &adapter->hw;
1064 	u32 ping;
1065 	int i;
1066 
1067 	for (i = 0 ; i < adapter->num_vfs; i++) {
1068 		ping = IXGBE_PF_CONTROL_MSG;
1069 		if (adapter->vfinfo[i].clear_to_send)
1070 			ping |= IXGBE_VT_MSGTYPE_CTS;
1071 		ixgbe_write_mbx(hw, &ping, 1, i);
1072 	}
1073 }
1074 
1075 int ixgbe_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
1076 {
1077 	struct ixgbe_adapter *adapter = netdev_priv(netdev);
1078 	if (!is_valid_ether_addr(mac) || (vf >= adapter->num_vfs))
1079 		return -EINVAL;
1080 	adapter->vfinfo[vf].pf_set_mac = true;
1081 	dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n", mac, vf);
1082 	dev_info(&adapter->pdev->dev, "Reload the VF driver to make this"
1083 				      " change effective.");
1084 	if (test_bit(__IXGBE_DOWN, &adapter->state)) {
1085 		dev_warn(&adapter->pdev->dev, "The VF MAC address has been set,"
1086 			 " but the PF device is not up.\n");
1087 		dev_warn(&adapter->pdev->dev, "Bring the PF device up before"
1088 			 " attempting to use the VF device.\n");
1089 	}
1090 	return ixgbe_set_vf_mac(adapter, vf, mac);
1091 }
1092 
1093 static int ixgbe_enable_port_vlan(struct ixgbe_adapter *adapter, int vf,
1094 				  u16 vlan, u8 qos)
1095 {
1096 	struct ixgbe_hw *hw = &adapter->hw;
1097 	int err;
1098 
1099 	err = ixgbe_set_vf_vlan(adapter, true, vlan, vf);
1100 	if (err)
1101 		goto out;
1102 
1103 	ixgbe_set_vmvir(adapter, vlan, qos, vf);
1104 	ixgbe_set_vmolr(hw, vf, false);
1105 	if (adapter->vfinfo[vf].spoofchk_enabled)
1106 		hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf);
1107 	adapter->vfinfo[vf].vlan_count++;
1108 
1109 	/* enable hide vlan on X550 */
1110 	if (hw->mac.type >= ixgbe_mac_X550)
1111 		ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE |
1112 				IXGBE_QDE_HIDE_VLAN);
1113 
1114 	adapter->vfinfo[vf].pf_vlan = vlan;
1115 	adapter->vfinfo[vf].pf_qos = qos;
1116 	dev_info(&adapter->pdev->dev,
1117 		 "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf);
1118 	if (test_bit(__IXGBE_DOWN, &adapter->state)) {
1119 		dev_warn(&adapter->pdev->dev,
1120 			 "The VF VLAN has been set, but the PF device is not up.\n");
1121 		dev_warn(&adapter->pdev->dev,
1122 			 "Bring the PF device up before attempting to use the VF device.\n");
1123 	}
1124 
1125 out:
1126 	return err;
1127 }
1128 
1129 static int ixgbe_disable_port_vlan(struct ixgbe_adapter *adapter, int vf)
1130 {
1131 	struct ixgbe_hw *hw = &adapter->hw;
1132 	int err;
1133 
1134 	err = ixgbe_set_vf_vlan(adapter, false,
1135 				adapter->vfinfo[vf].pf_vlan, vf);
1136 	ixgbe_clear_vmvir(adapter, vf);
1137 	ixgbe_set_vmolr(hw, vf, true);
1138 	hw->mac.ops.set_vlan_anti_spoofing(hw, false, vf);
1139 	if (adapter->vfinfo[vf].vlan_count)
1140 		adapter->vfinfo[vf].vlan_count--;
1141 
1142 	/* disable hide VLAN on X550 */
1143 	if (hw->mac.type >= ixgbe_mac_X550)
1144 		ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE);
1145 
1146 	adapter->vfinfo[vf].pf_vlan = 0;
1147 	adapter->vfinfo[vf].pf_qos = 0;
1148 
1149 	return err;
1150 }
1151 
1152 int ixgbe_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, u8 qos)
1153 {
1154 	int err = 0;
1155 	struct ixgbe_adapter *adapter = netdev_priv(netdev);
1156 
1157 	if ((vf >= adapter->num_vfs) || (vlan > 4095) || (qos > 7))
1158 		return -EINVAL;
1159 	if (vlan || qos) {
1160 		/* Check if there is already a port VLAN set, if so
1161 		 * we have to delete the old one first before we
1162 		 * can set the new one.  The usage model had
1163 		 * previously assumed the user would delete the
1164 		 * old port VLAN before setting a new one but this
1165 		 * is not necessarily the case.
1166 		 */
1167 		if (adapter->vfinfo[vf].pf_vlan)
1168 			err = ixgbe_disable_port_vlan(adapter, vf);
1169 		if (err)
1170 			goto out;
1171 		err = ixgbe_enable_port_vlan(adapter, vf, vlan, qos);
1172 	} else {
1173 		err = ixgbe_disable_port_vlan(adapter, vf);
1174 	}
1175 
1176 out:
1177 	return err;
1178 }
1179 
1180 static int ixgbe_link_mbps(struct ixgbe_adapter *adapter)
1181 {
1182 	switch (adapter->link_speed) {
1183 	case IXGBE_LINK_SPEED_100_FULL:
1184 		return 100;
1185 	case IXGBE_LINK_SPEED_1GB_FULL:
1186 		return 1000;
1187 	case IXGBE_LINK_SPEED_10GB_FULL:
1188 		return 10000;
1189 	default:
1190 		return 0;
1191 	}
1192 }
1193 
1194 static void ixgbe_set_vf_rate_limit(struct ixgbe_adapter *adapter, int vf)
1195 {
1196 	struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
1197 	struct ixgbe_hw *hw = &adapter->hw;
1198 	u32 bcnrc_val = 0;
1199 	u16 queue, queues_per_pool;
1200 	u16 tx_rate = adapter->vfinfo[vf].tx_rate;
1201 
1202 	if (tx_rate) {
1203 		/* start with base link speed value */
1204 		bcnrc_val = adapter->vf_rate_link_speed;
1205 
1206 		/* Calculate the rate factor values to set */
1207 		bcnrc_val <<= IXGBE_RTTBCNRC_RF_INT_SHIFT;
1208 		bcnrc_val /= tx_rate;
1209 
1210 		/* clear everything but the rate factor */
1211 		bcnrc_val &= IXGBE_RTTBCNRC_RF_INT_MASK |
1212 			     IXGBE_RTTBCNRC_RF_DEC_MASK;
1213 
1214 		/* enable the rate scheduler */
1215 		bcnrc_val |= IXGBE_RTTBCNRC_RS_ENA;
1216 	}
1217 
1218 	/*
1219 	 * Set global transmit compensation time to the MMW_SIZE in RTTBCNRM
1220 	 * register. Typically MMW_SIZE=0x014 if 9728-byte jumbo is supported
1221 	 * and 0x004 otherwise.
1222 	 */
1223 	switch (hw->mac.type) {
1224 	case ixgbe_mac_82599EB:
1225 		IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x4);
1226 		break;
1227 	case ixgbe_mac_X540:
1228 		IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x14);
1229 		break;
1230 	default:
1231 		break;
1232 	}
1233 
1234 	/* determine how many queues per pool based on VMDq mask */
1235 	queues_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
1236 
1237 	/* write value for all Tx queues belonging to VF */
1238 	for (queue = 0; queue < queues_per_pool; queue++) {
1239 		unsigned int reg_idx = (vf * queues_per_pool) + queue;
1240 
1241 		IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, reg_idx);
1242 		IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val);
1243 	}
1244 }
1245 
1246 void ixgbe_check_vf_rate_limit(struct ixgbe_adapter *adapter)
1247 {
1248 	int i;
1249 
1250 	/* VF Tx rate limit was not set */
1251 	if (!adapter->vf_rate_link_speed)
1252 		return;
1253 
1254 	if (ixgbe_link_mbps(adapter) != adapter->vf_rate_link_speed) {
1255 		adapter->vf_rate_link_speed = 0;
1256 		dev_info(&adapter->pdev->dev,
1257 			 "Link speed has been changed. VF Transmit rate is disabled\n");
1258 	}
1259 
1260 	for (i = 0; i < adapter->num_vfs; i++) {
1261 		if (!adapter->vf_rate_link_speed)
1262 			adapter->vfinfo[i].tx_rate = 0;
1263 
1264 		ixgbe_set_vf_rate_limit(adapter, i);
1265 	}
1266 }
1267 
1268 int ixgbe_ndo_set_vf_bw(struct net_device *netdev, int vf, int min_tx_rate,
1269 			int max_tx_rate)
1270 {
1271 	struct ixgbe_adapter *adapter = netdev_priv(netdev);
1272 	int link_speed;
1273 
1274 	/* verify VF is active */
1275 	if (vf >= adapter->num_vfs)
1276 		return -EINVAL;
1277 
1278 	/* verify link is up */
1279 	if (!adapter->link_up)
1280 		return -EINVAL;
1281 
1282 	/* verify we are linked at 10Gbps */
1283 	link_speed = ixgbe_link_mbps(adapter);
1284 	if (link_speed != 10000)
1285 		return -EINVAL;
1286 
1287 	if (min_tx_rate)
1288 		return -EINVAL;
1289 
1290 	/* rate limit cannot be less than 10Mbs or greater than link speed */
1291 	if (max_tx_rate && ((max_tx_rate <= 10) || (max_tx_rate > link_speed)))
1292 		return -EINVAL;
1293 
1294 	/* store values */
1295 	adapter->vf_rate_link_speed = link_speed;
1296 	adapter->vfinfo[vf].tx_rate = max_tx_rate;
1297 
1298 	/* update hardware configuration */
1299 	ixgbe_set_vf_rate_limit(adapter, vf);
1300 
1301 	return 0;
1302 }
1303 
1304 int ixgbe_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, bool setting)
1305 {
1306 	struct ixgbe_adapter *adapter = netdev_priv(netdev);
1307 	int vf_target_reg = vf >> 3;
1308 	int vf_target_shift = vf % 8;
1309 	struct ixgbe_hw *hw = &adapter->hw;
1310 	u32 regval;
1311 
1312 	if (vf >= adapter->num_vfs)
1313 		return -EINVAL;
1314 
1315 	adapter->vfinfo[vf].spoofchk_enabled = setting;
1316 
1317 	regval = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg));
1318 	regval &= ~(1 << vf_target_shift);
1319 	regval |= (setting << vf_target_shift);
1320 	IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), regval);
1321 
1322 	if (adapter->vfinfo[vf].vlan_count) {
1323 		vf_target_shift += IXGBE_SPOOF_VLANAS_SHIFT;
1324 		regval = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg));
1325 		regval &= ~(1 << vf_target_shift);
1326 		regval |= (setting << vf_target_shift);
1327 		IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), regval);
1328 	}
1329 
1330 	return 0;
1331 }
1332 
1333 int ixgbe_ndo_get_vf_config(struct net_device *netdev,
1334 			    int vf, struct ifla_vf_info *ivi)
1335 {
1336 	struct ixgbe_adapter *adapter = netdev_priv(netdev);
1337 	if (vf >= adapter->num_vfs)
1338 		return -EINVAL;
1339 	ivi->vf = vf;
1340 	memcpy(&ivi->mac, adapter->vfinfo[vf].vf_mac_addresses, ETH_ALEN);
1341 	ivi->max_tx_rate = adapter->vfinfo[vf].tx_rate;
1342 	ivi->min_tx_rate = 0;
1343 	ivi->vlan = adapter->vfinfo[vf].pf_vlan;
1344 	ivi->qos = adapter->vfinfo[vf].pf_qos;
1345 	ivi->spoofchk = adapter->vfinfo[vf].spoofchk_enabled;
1346 	return 0;
1347 }
1348