1 /*******************************************************************************
3 Intel 10 Gigabit PCI Express Linux driver
4 Copyright(c) 1999 - 2013 Intel Corporation.
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.
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
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.
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
23 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
24 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
26 *******************************************************************************/
28 #include <linux/types.h>
29 #include <linux/module.h>
30 #include <linux/pci.h>
31 #include <linux/netdevice.h>
32 #include <linux/vmalloc.h>
33 #include <linux/string.h>
36 #include <linux/tcp.h>
37 #include <linux/ipv6.h>
38 #ifdef NETIF_F_HW_VLAN_CTAG_TX
39 #include <linux/if_vlan.h>
43 #include "ixgbe_type.h"
44 #include "ixgbe_sriov.h"
47 static int __ixgbe_enable_sriov(struct ixgbe_adapter *adapter)
49 struct ixgbe_hw *hw = &adapter->hw;
50 int num_vf_macvlans, i;
51 struct vf_macvlans *mv_list;
53 adapter->flags |= IXGBE_FLAG_SRIOV_ENABLED;
54 e_info(probe, "SR-IOV enabled with %d VFs\n", adapter->num_vfs);
56 /* Enable VMDq flag so device will be set in VM mode */
57 adapter->flags |= IXGBE_FLAG_VMDQ_ENABLED;
58 if (!adapter->ring_feature[RING_F_VMDQ].limit)
59 adapter->ring_feature[RING_F_VMDQ].limit = 1;
60 adapter->ring_feature[RING_F_VMDQ].offset = adapter->num_vfs;
62 num_vf_macvlans = hw->mac.num_rar_entries -
63 (IXGBE_MAX_PF_MACVLANS + 1 + adapter->num_vfs);
65 adapter->mv_list = mv_list = kcalloc(num_vf_macvlans,
66 sizeof(struct vf_macvlans),
69 /* Initialize list of VF macvlans */
70 INIT_LIST_HEAD(&adapter->vf_mvs.l);
71 for (i = 0; i < num_vf_macvlans; i++) {
74 mv_list->rar_entry = hw->mac.num_rar_entries -
75 (i + adapter->num_vfs + 1);
76 list_add(&mv_list->l, &adapter->vf_mvs.l);
81 /* Initialize default switching mode VEB */
82 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN);
83 adapter->flags2 |= IXGBE_FLAG2_BRIDGE_MODE_VEB;
85 /* If call to enable VFs succeeded then allocate memory
86 * for per VF control structures.
89 kcalloc(adapter->num_vfs,
90 sizeof(struct vf_data_storage), GFP_KERNEL);
91 if (adapter->vfinfo) {
92 /* limit trafffic classes based on VFs enabled */
93 if ((adapter->hw.mac.type == ixgbe_mac_82599EB) &&
94 (adapter->num_vfs < 16)) {
95 adapter->dcb_cfg.num_tcs.pg_tcs = MAX_TRAFFIC_CLASS;
96 adapter->dcb_cfg.num_tcs.pfc_tcs = MAX_TRAFFIC_CLASS;
97 } else if (adapter->num_vfs < 32) {
98 adapter->dcb_cfg.num_tcs.pg_tcs = 4;
99 adapter->dcb_cfg.num_tcs.pfc_tcs = 4;
101 adapter->dcb_cfg.num_tcs.pg_tcs = 1;
102 adapter->dcb_cfg.num_tcs.pfc_tcs = 1;
105 /* We do not support RSS w/ SR-IOV */
106 adapter->ring_feature[RING_F_RSS].limit = 1;
108 /* Disable RSC when in SR-IOV mode */
109 adapter->flags2 &= ~(IXGBE_FLAG2_RSC_CAPABLE |
110 IXGBE_FLAG2_RSC_ENABLED);
112 /* enable spoof checking for all VFs */
113 for (i = 0; i < adapter->num_vfs; i++)
114 adapter->vfinfo[i].spoofchk_enabled = true;
121 /* Note this function is called when the user wants to enable SR-IOV
122 * VFs using the now deprecated module parameter
124 void ixgbe_enable_sriov(struct ixgbe_adapter *adapter)
126 int pre_existing_vfs = 0;
128 pre_existing_vfs = pci_num_vf(adapter->pdev);
129 if (!pre_existing_vfs && !adapter->num_vfs)
132 /* If there are pre-existing VFs then we have to force
133 * use of that many - over ride any module parameter value.
134 * This may result from the user unloading the PF driver
135 * while VFs were assigned to guest VMs or because the VFs
136 * have been created via the new PCI SR-IOV sysfs interface.
138 if (pre_existing_vfs) {
139 adapter->num_vfs = pre_existing_vfs;
140 dev_warn(&adapter->pdev->dev,
141 "Virtual Functions already enabled for this device - Please reload all VF drivers to avoid spoofed packet errors\n");
145 * The 82599 supports up to 64 VFs per physical function
146 * but this implementation limits allocation to 63 so that
147 * basic networking resources are still available to the
148 * physical function. If the user requests greater thn
149 * 63 VFs then it is an error - reset to default of zero.
151 adapter->num_vfs = min_t(unsigned int, adapter->num_vfs, 63);
153 err = pci_enable_sriov(adapter->pdev, adapter->num_vfs);
155 e_err(probe, "Failed to enable PCI sriov: %d\n", err);
156 adapter->num_vfs = 0;
161 if (!__ixgbe_enable_sriov(adapter))
164 /* If we have gotten to this point then there is no memory available
165 * to manage the VF devices - print message and bail.
167 e_err(probe, "Unable to allocate memory for VF Data Storage - "
169 ixgbe_disable_sriov(adapter);
172 #endif /* #ifdef CONFIG_PCI_IOV */
173 int ixgbe_disable_sriov(struct ixgbe_adapter *adapter)
175 struct ixgbe_hw *hw = &adapter->hw;
180 /* set num VFs to 0 to prevent access to vfinfo */
181 adapter->num_vfs = 0;
183 /* free VF control structures */
184 kfree(adapter->vfinfo);
185 adapter->vfinfo = NULL;
187 /* free macvlan list */
188 kfree(adapter->mv_list);
189 adapter->mv_list = NULL;
191 /* if SR-IOV is already disabled then there is nothing to do */
192 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED))
195 #ifdef CONFIG_PCI_IOV
197 * If our VFs are assigned we cannot shut down SR-IOV
198 * without causing issues, so just leave the hardware
199 * available but disabled
201 if (pci_vfs_assigned(adapter->pdev)) {
202 e_dev_warn("Unloading driver while VFs are assigned - VFs will not be deallocated\n");
205 /* disable iov and allow time for transactions to clear */
206 pci_disable_sriov(adapter->pdev);
209 /* turn off device IOV mode */
210 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, 0);
211 gpie = IXGBE_READ_REG(hw, IXGBE_GPIE);
212 gpie &= ~IXGBE_GPIE_VTMODE_MASK;
213 IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie);
215 /* set default pool back to 0 */
216 vmdctl = IXGBE_READ_REG(hw, IXGBE_VT_CTL);
217 vmdctl &= ~IXGBE_VT_CTL_POOL_MASK;
218 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vmdctl);
219 IXGBE_WRITE_FLUSH(hw);
221 /* Disable VMDq flag so device will be set in VM mode */
222 if (adapter->ring_feature[RING_F_VMDQ].limit == 1) {
223 adapter->flags &= ~IXGBE_FLAG_VMDQ_ENABLED;
224 adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED;
225 rss = min_t(int, IXGBE_MAX_RSS_INDICES, num_online_cpus());
227 rss = min_t(int, IXGBE_MAX_L2A_QUEUES, num_online_cpus());
230 adapter->ring_feature[RING_F_VMDQ].offset = 0;
231 adapter->ring_feature[RING_F_RSS].limit = rss;
233 /* take a breather then clean up driver data */
238 static int ixgbe_pci_sriov_enable(struct pci_dev *dev, int num_vfs)
240 #ifdef CONFIG_PCI_IOV
241 struct ixgbe_adapter *adapter = pci_get_drvdata(dev);
244 int pre_existing_vfs = pci_num_vf(dev);
246 if (pre_existing_vfs && pre_existing_vfs != num_vfs)
247 err = ixgbe_disable_sriov(adapter);
248 else if (pre_existing_vfs && pre_existing_vfs == num_vfs)
254 /* While the SR-IOV capability structure reports total VFs to be
255 * 64 we limit the actual number that can be allocated to 63 so
256 * that some transmit/receive resources can be reserved to the
257 * PF. The PCI bus driver already checks for other values out of
265 adapter->num_vfs = num_vfs;
267 err = __ixgbe_enable_sriov(adapter);
271 for (i = 0; i < adapter->num_vfs; i++)
272 ixgbe_vf_configuration(dev, (i | 0x10000000));
274 err = pci_enable_sriov(dev, num_vfs);
276 e_dev_warn("Failed to enable PCI sriov: %d\n", err);
279 ixgbe_sriov_reinit(adapter);
290 static int ixgbe_pci_sriov_disable(struct pci_dev *dev)
292 struct ixgbe_adapter *adapter = pci_get_drvdata(dev);
294 u32 current_flags = adapter->flags;
296 err = ixgbe_disable_sriov(adapter);
298 /* Only reinit if no error and state changed */
299 #ifdef CONFIG_PCI_IOV
300 if (!err && current_flags != adapter->flags)
301 ixgbe_sriov_reinit(adapter);
307 int ixgbe_pci_sriov_configure(struct pci_dev *dev, int num_vfs)
310 return ixgbe_pci_sriov_disable(dev);
312 return ixgbe_pci_sriov_enable(dev, num_vfs);
315 static int ixgbe_set_vf_multicasts(struct ixgbe_adapter *adapter,
318 int entries = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK)
319 >> IXGBE_VT_MSGINFO_SHIFT;
320 u16 *hash_list = (u16 *)&msgbuf[1];
321 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
322 struct ixgbe_hw *hw = &adapter->hw;
328 /* only so many hash values supported */
329 entries = min(entries, IXGBE_MAX_VF_MC_ENTRIES);
332 * salt away the number of multi cast addresses assigned
333 * to this VF for later use to restore when the PF multi cast
336 vfinfo->num_vf_mc_hashes = entries;
339 * VFs are limited to using the MTA hash table for their multicast
342 for (i = 0; i < entries; i++) {
343 vfinfo->vf_mc_hashes[i] = hash_list[i];
346 for (i = 0; i < vfinfo->num_vf_mc_hashes; i++) {
347 vector_reg = (vfinfo->vf_mc_hashes[i] >> 5) & 0x7F;
348 vector_bit = vfinfo->vf_mc_hashes[i] & 0x1F;
349 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));
350 mta_reg |= (1 << vector_bit);
351 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);
357 static void ixgbe_restore_vf_macvlans(struct ixgbe_adapter *adapter)
359 struct ixgbe_hw *hw = &adapter->hw;
360 struct list_head *pos;
361 struct vf_macvlans *entry;
363 list_for_each(pos, &adapter->vf_mvs.l) {
364 entry = list_entry(pos, struct vf_macvlans, l);
366 hw->mac.ops.set_rar(hw, entry->rar_entry,
368 entry->vf, IXGBE_RAH_AV);
372 void ixgbe_restore_vf_multicasts(struct ixgbe_adapter *adapter)
374 struct ixgbe_hw *hw = &adapter->hw;
375 struct vf_data_storage *vfinfo;
381 for (i = 0; i < adapter->num_vfs; i++) {
382 vfinfo = &adapter->vfinfo[i];
383 for (j = 0; j < vfinfo->num_vf_mc_hashes; j++) {
384 hw->addr_ctrl.mta_in_use++;
385 vector_reg = (vfinfo->vf_mc_hashes[j] >> 5) & 0x7F;
386 vector_bit = vfinfo->vf_mc_hashes[j] & 0x1F;
387 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));
388 mta_reg |= (1 << vector_bit);
389 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);
393 /* Restore any VF macvlans */
394 ixgbe_restore_vf_macvlans(adapter);
397 static int ixgbe_set_vf_vlan(struct ixgbe_adapter *adapter, int add, int vid,
400 /* VLAN 0 is a special case, don't allow it to be removed */
404 return adapter->hw.mac.ops.set_vfta(&adapter->hw, vid, vf, (bool)add);
407 static s32 ixgbe_set_vf_lpe(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf)
409 struct ixgbe_hw *hw = &adapter->hw;
410 int max_frame = msgbuf[1];
414 * For 82599EB we have to keep all PFs and VFs operating with
415 * the same max_frame value in order to avoid sending an oversize
416 * frame to a VF. In order to guarantee this is handled correctly
417 * for all cases we have several special exceptions to take into
418 * account before we can enable the VF for receive
420 if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
421 struct net_device *dev = adapter->netdev;
422 int pf_max_frame = dev->mtu + ETH_HLEN;
423 u32 reg_offset, vf_shift, vfre;
427 if (dev->features & NETIF_F_FCOE_MTU)
428 pf_max_frame = max_t(int, pf_max_frame,
429 IXGBE_FCOE_JUMBO_FRAME_SIZE);
431 #endif /* CONFIG_FCOE */
432 switch (adapter->vfinfo[vf].vf_api) {
433 case ixgbe_mbox_api_11:
435 * Version 1.1 supports jumbo frames on VFs if PF has
436 * jumbo frames enabled which means legacy VFs are
439 if (pf_max_frame > ETH_FRAME_LEN)
443 * If the PF or VF are running w/ jumbo frames enabled
444 * we need to shut down the VF Rx path as we cannot
445 * support jumbo frames on legacy VFs
447 if ((pf_max_frame > ETH_FRAME_LEN) ||
448 (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN)))
453 /* determine VF receive enable location */
455 reg_offset = vf / 32;
457 /* enable or disable receive depending on error */
458 vfre = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset));
460 vfre &= ~(1 << vf_shift);
462 vfre |= 1 << vf_shift;
463 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), vfre);
466 e_err(drv, "VF max_frame %d out of range\n", max_frame);
471 /* MTU < 68 is an error and causes problems on some kernels */
472 if (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE) {
473 e_err(drv, "VF max_frame %d out of range\n", max_frame);
477 /* pull current max frame size from hardware */
478 max_frs = IXGBE_READ_REG(hw, IXGBE_MAXFRS);
479 max_frs &= IXGBE_MHADD_MFS_MASK;
480 max_frs >>= IXGBE_MHADD_MFS_SHIFT;
482 if (max_frs < max_frame) {
483 max_frs = max_frame << IXGBE_MHADD_MFS_SHIFT;
484 IXGBE_WRITE_REG(hw, IXGBE_MAXFRS, max_frs);
487 e_info(hw, "VF requests change max MTU to %d\n", max_frame);
492 static void ixgbe_set_vmolr(struct ixgbe_hw *hw, u32 vf, bool aupe)
494 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
495 vmolr |= (IXGBE_VMOLR_ROMPE |
498 vmolr |= IXGBE_VMOLR_AUPE;
500 vmolr &= ~IXGBE_VMOLR_AUPE;
501 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
504 static void ixgbe_clear_vmvir(struct ixgbe_adapter *adapter, u32 vf)
506 struct ixgbe_hw *hw = &adapter->hw;
508 IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), 0);
510 static inline void ixgbe_vf_reset_event(struct ixgbe_adapter *adapter, u32 vf)
512 struct ixgbe_hw *hw = &adapter->hw;
513 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
514 int rar_entry = hw->mac.num_rar_entries - (vf + 1);
515 u8 num_tcs = netdev_get_num_tc(adapter->netdev);
517 /* add PF assigned VLAN or VLAN 0 */
518 ixgbe_set_vf_vlan(adapter, true, vfinfo->pf_vlan, vf);
520 /* reset offloads to defaults */
521 ixgbe_set_vmolr(hw, vf, !vfinfo->pf_vlan);
523 /* set outgoing tags for VFs */
524 if (!vfinfo->pf_vlan && !vfinfo->pf_qos && !num_tcs) {
525 ixgbe_clear_vmvir(adapter, vf);
527 if (vfinfo->pf_qos || !num_tcs)
528 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
531 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
532 adapter->default_up, vf);
534 if (vfinfo->spoofchk_enabled)
535 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf);
538 /* reset multicast table array for vf */
539 adapter->vfinfo[vf].num_vf_mc_hashes = 0;
541 /* Flush and reset the mta with the new values */
542 ixgbe_set_rx_mode(adapter->netdev);
544 hw->mac.ops.clear_rar(hw, rar_entry);
546 /* reset VF api back to unknown */
547 adapter->vfinfo[vf].vf_api = ixgbe_mbox_api_10;
550 static int ixgbe_set_vf_mac(struct ixgbe_adapter *adapter,
551 int vf, unsigned char *mac_addr)
553 struct ixgbe_hw *hw = &adapter->hw;
554 int rar_entry = hw->mac.num_rar_entries - (vf + 1);
556 memcpy(adapter->vfinfo[vf].vf_mac_addresses, mac_addr, ETH_ALEN);
557 hw->mac.ops.set_rar(hw, rar_entry, mac_addr, vf, IXGBE_RAH_AV);
562 static int ixgbe_set_vf_macvlan(struct ixgbe_adapter *adapter,
563 int vf, int index, unsigned char *mac_addr)
565 struct ixgbe_hw *hw = &adapter->hw;
566 struct list_head *pos;
567 struct vf_macvlans *entry;
570 list_for_each(pos, &adapter->vf_mvs.l) {
571 entry = list_entry(pos, struct vf_macvlans, l);
572 if (entry->vf == vf) {
575 entry->is_macvlan = false;
576 hw->mac.ops.clear_rar(hw, entry->rar_entry);
582 * If index was zero then we were asked to clear the uc list
583 * for the VF. We're done.
590 list_for_each(pos, &adapter->vf_mvs.l) {
591 entry = list_entry(pos, struct vf_macvlans, l);
597 * If we traversed the entire list and didn't find a free entry
598 * then we're out of space on the RAR table. Also entry may
599 * be NULL because the original memory allocation for the list
600 * failed, which is not fatal but does mean we can't support
601 * VF requests for MACVLAN because we couldn't allocate
602 * memory for the list management required.
604 if (!entry || !entry->free)
608 entry->is_macvlan = true;
610 memcpy(entry->vf_macvlan, mac_addr, ETH_ALEN);
612 hw->mac.ops.set_rar(hw, entry->rar_entry, mac_addr, vf, IXGBE_RAH_AV);
617 int ixgbe_vf_configuration(struct pci_dev *pdev, unsigned int event_mask)
619 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
620 unsigned int vfn = (event_mask & 0x3f);
622 bool enable = ((event_mask & 0x10000000U) != 0);
625 eth_zero_addr(adapter->vfinfo[vfn].vf_mac_addresses);
630 static int ixgbe_vf_reset_msg(struct ixgbe_adapter *adapter, u32 vf)
632 struct ixgbe_hw *hw = &adapter->hw;
633 unsigned char *vf_mac = adapter->vfinfo[vf].vf_mac_addresses;
634 u32 reg, reg_offset, vf_shift;
635 u32 msgbuf[4] = {0, 0, 0, 0};
636 u8 *addr = (u8 *)(&msgbuf[1]);
638 e_info(probe, "VF Reset msg received from vf %d\n", vf);
640 /* reset the filters for the device */
641 ixgbe_vf_reset_event(adapter, vf);
643 /* set vf mac address */
644 if (!is_zero_ether_addr(vf_mac))
645 ixgbe_set_vf_mac(adapter, vf, vf_mac);
648 reg_offset = vf / 32;
650 /* enable transmit for vf */
651 reg = IXGBE_READ_REG(hw, IXGBE_VFTE(reg_offset));
652 reg |= 1 << vf_shift;
653 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), reg);
655 /* enable receive for vf */
656 reg = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset));
657 reg |= 1 << vf_shift;
659 * The 82599 cannot support a mix of jumbo and non-jumbo PF/VFs.
660 * For more info take a look at ixgbe_set_vf_lpe
662 if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
663 struct net_device *dev = adapter->netdev;
664 int pf_max_frame = dev->mtu + ETH_HLEN;
667 if (dev->features & NETIF_F_FCOE_MTU)
668 pf_max_frame = max_t(int, pf_max_frame,
669 IXGBE_FCOE_JUMBO_FRAME_SIZE);
671 #endif /* CONFIG_FCOE */
672 if (pf_max_frame > ETH_FRAME_LEN)
673 reg &= ~(1 << vf_shift);
675 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), reg);
677 /* enable VF mailbox for further messages */
678 adapter->vfinfo[vf].clear_to_send = true;
680 /* Enable counting of spoofed packets in the SSVPC register */
681 reg = IXGBE_READ_REG(hw, IXGBE_VMECM(reg_offset));
682 reg |= (1 << vf_shift);
683 IXGBE_WRITE_REG(hw, IXGBE_VMECM(reg_offset), reg);
685 /* reply to reset with ack and vf mac address */
686 msgbuf[0] = IXGBE_VF_RESET;
687 if (!is_zero_ether_addr(vf_mac)) {
688 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK;
689 memcpy(addr, vf_mac, ETH_ALEN);
691 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
692 dev_warn(&adapter->pdev->dev,
693 "VF %d has no MAC address assigned, you may have to assign one manually\n",
698 * Piggyback the multicast filter type so VF can compute the
701 msgbuf[3] = hw->mac.mc_filter_type;
702 ixgbe_write_mbx(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN, vf);
707 static int ixgbe_set_vf_mac_addr(struct ixgbe_adapter *adapter,
710 u8 *new_mac = ((u8 *)(&msgbuf[1]));
712 if (!is_valid_ether_addr(new_mac)) {
713 e_warn(drv, "VF %d attempted to set invalid mac\n", vf);
717 if (adapter->vfinfo[vf].pf_set_mac &&
718 !ether_addr_equal(adapter->vfinfo[vf].vf_mac_addresses, new_mac)) {
720 "VF %d attempted to override administratively set MAC address\n"
721 "Reload the VF driver to resume operations\n",
726 return ixgbe_set_vf_mac(adapter, vf, new_mac) < 0;
729 static int ixgbe_find_vlvf_entry(struct ixgbe_hw *hw, u32 vlan)
734 /* short cut the special case */
738 /* Search for the vlan id in the VLVF entries */
739 for (regindex = 1; regindex < IXGBE_VLVF_ENTRIES; regindex++) {
740 vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(regindex));
741 if ((vlvf & VLAN_VID_MASK) == vlan)
745 /* Return a negative value if not found */
746 if (regindex >= IXGBE_VLVF_ENTRIES)
752 static int ixgbe_set_vf_vlan_msg(struct ixgbe_adapter *adapter,
755 struct ixgbe_hw *hw = &adapter->hw;
756 int add = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> IXGBE_VT_MSGINFO_SHIFT;
757 int vid = (msgbuf[1] & IXGBE_VLVF_VLANID_MASK);
762 u8 tcs = netdev_get_num_tc(adapter->netdev);
764 if (adapter->vfinfo[vf].pf_vlan || tcs) {
766 "VF %d attempted to override administratively set VLAN configuration\n"
767 "Reload the VF driver to resume operations\n",
773 adapter->vfinfo[vf].vlan_count++;
774 else if (adapter->vfinfo[vf].vlan_count)
775 adapter->vfinfo[vf].vlan_count--;
777 /* in case of promiscuous mode any VLAN filter set for a VF must
778 * also have the PF pool added to it.
780 if (add && adapter->netdev->flags & IFF_PROMISC)
781 err = ixgbe_set_vf_vlan(adapter, add, vid, VMDQ_P(0));
783 err = ixgbe_set_vf_vlan(adapter, add, vid, vf);
784 if (!err && adapter->vfinfo[vf].spoofchk_enabled)
785 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf);
787 /* Go through all the checks to see if the VLAN filter should
788 * be wiped completely.
790 if (!add && adapter->netdev->flags & IFF_PROMISC) {
791 reg_ndx = ixgbe_find_vlvf_entry(hw, vid);
794 vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(reg_ndx));
795 /* See if any other pools are set for this VLAN filter
796 * entry other than the PF.
798 if (VMDQ_P(0) < 32) {
799 bits = IXGBE_READ_REG(hw, IXGBE_VLVFB(reg_ndx * 2));
800 bits &= ~(1 << VMDQ_P(0));
801 bits |= IXGBE_READ_REG(hw,
802 IXGBE_VLVFB(reg_ndx * 2) + 1);
804 bits = IXGBE_READ_REG(hw,
805 IXGBE_VLVFB(reg_ndx * 2) + 1);
806 bits &= ~(1 << (VMDQ_P(0) - 32));
807 bits |= IXGBE_READ_REG(hw, IXGBE_VLVFB(reg_ndx * 2));
810 /* If the filter was removed then ensure PF pool bit
811 * is cleared if the PF only added itself to the pool
812 * because the PF is in promiscuous mode.
814 if ((vlvf & VLAN_VID_MASK) == vid &&
815 !test_bit(vid, adapter->active_vlans) && !bits)
816 ixgbe_set_vf_vlan(adapter, add, vid, VMDQ_P(0));
824 static int ixgbe_set_vf_macvlan_msg(struct ixgbe_adapter *adapter,
827 u8 *new_mac = ((u8 *)(&msgbuf[1]));
828 int index = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >>
829 IXGBE_VT_MSGINFO_SHIFT;
832 if (adapter->vfinfo[vf].pf_set_mac && index > 0) {
834 "VF %d requested MACVLAN filter but is administratively denied\n",
839 /* An non-zero index indicates the VF is setting a filter */
841 if (!is_valid_ether_addr(new_mac)) {
842 e_warn(drv, "VF %d attempted to set invalid mac\n", vf);
847 * If the VF is allowed to set MAC filters then turn off
848 * anti-spoofing to avoid false positives.
850 if (adapter->vfinfo[vf].spoofchk_enabled)
851 ixgbe_ndo_set_vf_spoofchk(adapter->netdev, vf, false);
854 err = ixgbe_set_vf_macvlan(adapter, vf, index, new_mac);
857 "VF %d has requested a MACVLAN filter but there is no space for it\n",
863 static int ixgbe_negotiate_vf_api(struct ixgbe_adapter *adapter,
869 case ixgbe_mbox_api_10:
870 case ixgbe_mbox_api_11:
871 adapter->vfinfo[vf].vf_api = api;
877 e_info(drv, "VF %d requested invalid api version %u\n", vf, api);
882 static int ixgbe_get_vf_queues(struct ixgbe_adapter *adapter,
885 struct net_device *dev = adapter->netdev;
886 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
887 unsigned int default_tc = 0;
888 u8 num_tcs = netdev_get_num_tc(dev);
890 /* verify the PF is supporting the correct APIs */
891 switch (adapter->vfinfo[vf].vf_api) {
892 case ixgbe_mbox_api_20:
893 case ixgbe_mbox_api_11:
899 /* only allow 1 Tx queue for bandwidth limiting */
900 msgbuf[IXGBE_VF_TX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);
901 msgbuf[IXGBE_VF_RX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);
903 /* if TCs > 1 determine which TC belongs to default user priority */
905 default_tc = netdev_get_prio_tc_map(dev, adapter->default_up);
907 /* notify VF of need for VLAN tag stripping, and correct queue */
909 msgbuf[IXGBE_VF_TRANS_VLAN] = num_tcs;
910 else if (adapter->vfinfo[vf].pf_vlan || adapter->vfinfo[vf].pf_qos)
911 msgbuf[IXGBE_VF_TRANS_VLAN] = 1;
913 msgbuf[IXGBE_VF_TRANS_VLAN] = 0;
915 /* notify VF of default queue */
916 msgbuf[IXGBE_VF_DEF_QUEUE] = default_tc;
921 static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf)
923 u32 mbx_size = IXGBE_VFMAILBOX_SIZE;
924 u32 msgbuf[IXGBE_VFMAILBOX_SIZE];
925 struct ixgbe_hw *hw = &adapter->hw;
928 retval = ixgbe_read_mbx(hw, msgbuf, mbx_size, vf);
931 pr_err("Error receiving message from VF\n");
935 /* this is a message we already processed, do nothing */
936 if (msgbuf[0] & (IXGBE_VT_MSGTYPE_ACK | IXGBE_VT_MSGTYPE_NACK))
939 /* flush the ack before we write any messages back */
940 IXGBE_WRITE_FLUSH(hw);
942 if (msgbuf[0] == IXGBE_VF_RESET)
943 return ixgbe_vf_reset_msg(adapter, vf);
946 * until the vf completes a virtual function reset it should not be
947 * allowed to start any configuration.
949 if (!adapter->vfinfo[vf].clear_to_send) {
950 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
951 ixgbe_write_mbx(hw, msgbuf, 1, vf);
955 switch ((msgbuf[0] & 0xFFFF)) {
956 case IXGBE_VF_SET_MAC_ADDR:
957 retval = ixgbe_set_vf_mac_addr(adapter, msgbuf, vf);
959 case IXGBE_VF_SET_MULTICAST:
960 retval = ixgbe_set_vf_multicasts(adapter, msgbuf, vf);
962 case IXGBE_VF_SET_VLAN:
963 retval = ixgbe_set_vf_vlan_msg(adapter, msgbuf, vf);
965 case IXGBE_VF_SET_LPE:
966 retval = ixgbe_set_vf_lpe(adapter, msgbuf, vf);
968 case IXGBE_VF_SET_MACVLAN:
969 retval = ixgbe_set_vf_macvlan_msg(adapter, msgbuf, vf);
971 case IXGBE_VF_API_NEGOTIATE:
972 retval = ixgbe_negotiate_vf_api(adapter, msgbuf, vf);
974 case IXGBE_VF_GET_QUEUES:
975 retval = ixgbe_get_vf_queues(adapter, msgbuf, vf);
978 e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]);
979 retval = IXGBE_ERR_MBX;
983 /* notify the VF of the results of what it sent us */
985 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
987 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK;
989 msgbuf[0] |= IXGBE_VT_MSGTYPE_CTS;
991 ixgbe_write_mbx(hw, msgbuf, mbx_size, vf);
996 static void ixgbe_rcv_ack_from_vf(struct ixgbe_adapter *adapter, u32 vf)
998 struct ixgbe_hw *hw = &adapter->hw;
999 u32 msg = IXGBE_VT_MSGTYPE_NACK;
1001 /* if device isn't clear to send it shouldn't be reading either */
1002 if (!adapter->vfinfo[vf].clear_to_send)
1003 ixgbe_write_mbx(hw, &msg, 1, vf);
1006 void ixgbe_msg_task(struct ixgbe_adapter *adapter)
1008 struct ixgbe_hw *hw = &adapter->hw;
1011 for (vf = 0; vf < adapter->num_vfs; vf++) {
1012 /* process any reset requests */
1013 if (!ixgbe_check_for_rst(hw, vf))
1014 ixgbe_vf_reset_event(adapter, vf);
1016 /* process any messages pending */
1017 if (!ixgbe_check_for_msg(hw, vf))
1018 ixgbe_rcv_msg_from_vf(adapter, vf);
1020 /* process any acks */
1021 if (!ixgbe_check_for_ack(hw, vf))
1022 ixgbe_rcv_ack_from_vf(adapter, vf);
1026 void ixgbe_disable_tx_rx(struct ixgbe_adapter *adapter)
1028 struct ixgbe_hw *hw = &adapter->hw;
1030 /* disable transmit and receive for all vfs */
1031 IXGBE_WRITE_REG(hw, IXGBE_VFTE(0), 0);
1032 IXGBE_WRITE_REG(hw, IXGBE_VFTE(1), 0);
1034 IXGBE_WRITE_REG(hw, IXGBE_VFRE(0), 0);
1035 IXGBE_WRITE_REG(hw, IXGBE_VFRE(1), 0);
1038 void ixgbe_ping_all_vfs(struct ixgbe_adapter *adapter)
1040 struct ixgbe_hw *hw = &adapter->hw;
1044 for (i = 0 ; i < adapter->num_vfs; i++) {
1045 ping = IXGBE_PF_CONTROL_MSG;
1046 if (adapter->vfinfo[i].clear_to_send)
1047 ping |= IXGBE_VT_MSGTYPE_CTS;
1048 ixgbe_write_mbx(hw, &ping, 1, i);
1052 int ixgbe_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
1054 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1055 if (!is_valid_ether_addr(mac) || (vf >= adapter->num_vfs))
1057 adapter->vfinfo[vf].pf_set_mac = true;
1058 dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n", mac, vf);
1059 dev_info(&adapter->pdev->dev, "Reload the VF driver to make this"
1060 " change effective.");
1061 if (test_bit(__IXGBE_DOWN, &adapter->state)) {
1062 dev_warn(&adapter->pdev->dev, "The VF MAC address has been set,"
1063 " but the PF device is not up.\n");
1064 dev_warn(&adapter->pdev->dev, "Bring the PF device up before"
1065 " attempting to use the VF device.\n");
1067 return ixgbe_set_vf_mac(adapter, vf, mac);
1070 int ixgbe_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, u8 qos)
1073 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1074 struct ixgbe_hw *hw = &adapter->hw;
1076 if ((vf >= adapter->num_vfs) || (vlan > 4095) || (qos > 7))
1079 if (adapter->vfinfo[vf].pf_vlan)
1080 err = ixgbe_set_vf_vlan(adapter, false,
1081 adapter->vfinfo[vf].pf_vlan,
1085 err = ixgbe_set_vf_vlan(adapter, true, vlan, vf);
1088 ixgbe_set_vmvir(adapter, vlan, qos, vf);
1089 ixgbe_set_vmolr(hw, vf, false);
1090 if (adapter->vfinfo[vf].spoofchk_enabled)
1091 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf);
1092 adapter->vfinfo[vf].vlan_count++;
1093 adapter->vfinfo[vf].pf_vlan = vlan;
1094 adapter->vfinfo[vf].pf_qos = qos;
1095 dev_info(&adapter->pdev->dev,
1096 "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf);
1097 if (test_bit(__IXGBE_DOWN, &adapter->state)) {
1098 dev_warn(&adapter->pdev->dev,
1099 "The VF VLAN has been set,"
1100 " but the PF device is not up.\n");
1101 dev_warn(&adapter->pdev->dev,
1102 "Bring the PF device up before"
1103 " attempting to use the VF device.\n");
1106 err = ixgbe_set_vf_vlan(adapter, false,
1107 adapter->vfinfo[vf].pf_vlan, vf);
1108 ixgbe_clear_vmvir(adapter, vf);
1109 ixgbe_set_vmolr(hw, vf, true);
1110 hw->mac.ops.set_vlan_anti_spoofing(hw, false, vf);
1111 if (adapter->vfinfo[vf].vlan_count)
1112 adapter->vfinfo[vf].vlan_count--;
1113 adapter->vfinfo[vf].pf_vlan = 0;
1114 adapter->vfinfo[vf].pf_qos = 0;
1120 static int ixgbe_link_mbps(struct ixgbe_adapter *adapter)
1122 switch (adapter->link_speed) {
1123 case IXGBE_LINK_SPEED_100_FULL:
1125 case IXGBE_LINK_SPEED_1GB_FULL:
1127 case IXGBE_LINK_SPEED_10GB_FULL:
1134 static void ixgbe_set_vf_rate_limit(struct ixgbe_adapter *adapter, int vf)
1136 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
1137 struct ixgbe_hw *hw = &adapter->hw;
1139 u16 queue, queues_per_pool;
1140 u16 tx_rate = adapter->vfinfo[vf].tx_rate;
1143 /* start with base link speed value */
1144 bcnrc_val = adapter->vf_rate_link_speed;
1146 /* Calculate the rate factor values to set */
1147 bcnrc_val <<= IXGBE_RTTBCNRC_RF_INT_SHIFT;
1148 bcnrc_val /= tx_rate;
1150 /* clear everything but the rate factor */
1151 bcnrc_val &= IXGBE_RTTBCNRC_RF_INT_MASK |
1152 IXGBE_RTTBCNRC_RF_DEC_MASK;
1154 /* enable the rate scheduler */
1155 bcnrc_val |= IXGBE_RTTBCNRC_RS_ENA;
1159 * Set global transmit compensation time to the MMW_SIZE in RTTBCNRM
1160 * register. Typically MMW_SIZE=0x014 if 9728-byte jumbo is supported
1161 * and 0x004 otherwise.
1163 switch (hw->mac.type) {
1164 case ixgbe_mac_82599EB:
1165 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x4);
1167 case ixgbe_mac_X540:
1168 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x14);
1174 /* determine how many queues per pool based on VMDq mask */
1175 queues_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
1177 /* write value for all Tx queues belonging to VF */
1178 for (queue = 0; queue < queues_per_pool; queue++) {
1179 unsigned int reg_idx = (vf * queues_per_pool) + queue;
1181 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, reg_idx);
1182 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val);
1186 void ixgbe_check_vf_rate_limit(struct ixgbe_adapter *adapter)
1190 /* VF Tx rate limit was not set */
1191 if (!adapter->vf_rate_link_speed)
1194 if (ixgbe_link_mbps(adapter) != adapter->vf_rate_link_speed) {
1195 adapter->vf_rate_link_speed = 0;
1196 dev_info(&adapter->pdev->dev,
1197 "Link speed has been changed. VF Transmit rate is disabled\n");
1200 for (i = 0; i < adapter->num_vfs; i++) {
1201 if (!adapter->vf_rate_link_speed)
1202 adapter->vfinfo[i].tx_rate = 0;
1204 ixgbe_set_vf_rate_limit(adapter, i);
1208 int ixgbe_ndo_set_vf_bw(struct net_device *netdev, int vf, int tx_rate)
1210 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1213 /* verify VF is active */
1214 if (vf >= adapter->num_vfs)
1217 /* verify link is up */
1218 if (!adapter->link_up)
1221 /* verify we are linked at 10Gbps */
1222 link_speed = ixgbe_link_mbps(adapter);
1223 if (link_speed != 10000)
1226 /* rate limit cannot be less than 10Mbs or greater than link speed */
1227 if (tx_rate && ((tx_rate <= 10) || (tx_rate > link_speed)))
1231 adapter->vf_rate_link_speed = link_speed;
1232 adapter->vfinfo[vf].tx_rate = tx_rate;
1234 /* update hardware configuration */
1235 ixgbe_set_vf_rate_limit(adapter, vf);
1240 int ixgbe_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, bool setting)
1242 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1243 int vf_target_reg = vf >> 3;
1244 int vf_target_shift = vf % 8;
1245 struct ixgbe_hw *hw = &adapter->hw;
1248 adapter->vfinfo[vf].spoofchk_enabled = setting;
1250 regval = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg));
1251 regval &= ~(1 << vf_target_shift);
1252 regval |= (setting << vf_target_shift);
1253 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), regval);
1255 if (adapter->vfinfo[vf].vlan_count) {
1256 vf_target_shift += IXGBE_SPOOF_VLANAS_SHIFT;
1257 regval = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg));
1258 regval &= ~(1 << vf_target_shift);
1259 regval |= (setting << vf_target_shift);
1260 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), regval);
1266 int ixgbe_ndo_get_vf_config(struct net_device *netdev,
1267 int vf, struct ifla_vf_info *ivi)
1269 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1270 if (vf >= adapter->num_vfs)
1273 memcpy(&ivi->mac, adapter->vfinfo[vf].vf_mac_addresses, ETH_ALEN);
1274 ivi->tx_rate = adapter->vfinfo[vf].tx_rate;
1275 ivi->vlan = adapter->vfinfo[vf].pf_vlan;
1276 ivi->qos = adapter->vfinfo[vf].pf_qos;
1277 ivi->spoofchk = adapter->vfinfo[vf].spoofchk_enabled;