| /******************************************************************************* |
| |
| Intel 10 Gigabit PCI Express Linux driver |
| Copyright(c) 1999 - 2010 Intel Corporation. |
| |
| This program is free software; you can redistribute it and/or modify it |
| under the terms and conditions of the GNU General Public License, |
| version 2, as published by the Free Software Foundation. |
| |
| This program is distributed in the hope it will be useful, but WITHOUT |
| ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| more details. |
| |
| You should have received a copy of the GNU General Public License along with |
| this program; if not, write to the Free Software Foundation, Inc., |
| 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. |
| |
| The full GNU General Public License is included in this distribution in |
| the file called "COPYING". |
| |
| Contact Information: |
| e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> |
| Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
| |
| *******************************************************************************/ |
| |
| #include <linux/types.h> |
| #include <linux/module.h> |
| #include <linux/pci.h> |
| #include <linux/netdevice.h> |
| #include <linux/vmalloc.h> |
| #include <linux/string.h> |
| #include <linux/in.h> |
| #include <linux/ip.h> |
| #include <linux/tcp.h> |
| #include <linux/ipv6.h> |
| #ifdef NETIF_F_HW_VLAN_TX |
| #include <linux/if_vlan.h> |
| #endif |
| |
| #include "ixgbe.h" |
| |
| #include "ixgbe_sriov.h" |
| |
| static int ixgbe_set_vf_multicasts(struct ixgbe_adapter *adapter, |
| int entries, u16 *hash_list, u32 vf) |
| { |
| struct vf_data_storage *vfinfo = &adapter->vfinfo[vf]; |
| struct ixgbe_hw *hw = &adapter->hw; |
| int i; |
| u32 vector_bit; |
| u32 vector_reg; |
| u32 mta_reg; |
| |
| /* only so many hash values supported */ |
| entries = min(entries, IXGBE_MAX_VF_MC_ENTRIES); |
| |
| /* |
| * salt away the number of multi cast addresses assigned |
| * to this VF for later use to restore when the PF multi cast |
| * list changes |
| */ |
| vfinfo->num_vf_mc_hashes = entries; |
| |
| /* |
| * VFs are limited to using the MTA hash table for their multicast |
| * addresses |
| */ |
| for (i = 0; i < entries; i++) { |
| vfinfo->vf_mc_hashes[i] = hash_list[i]; |
| } |
| |
| for (i = 0; i < vfinfo->num_vf_mc_hashes; i++) { |
| vector_reg = (vfinfo->vf_mc_hashes[i] >> 5) & 0x7F; |
| vector_bit = vfinfo->vf_mc_hashes[i] & 0x1F; |
| mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg)); |
| mta_reg |= (1 << vector_bit); |
| IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg); |
| } |
| |
| return 0; |
| } |
| |
| void ixgbe_restore_vf_multicasts(struct ixgbe_adapter *adapter) |
| { |
| struct ixgbe_hw *hw = &adapter->hw; |
| struct vf_data_storage *vfinfo; |
| int i, j; |
| u32 vector_bit; |
| u32 vector_reg; |
| u32 mta_reg; |
| |
| for (i = 0; i < adapter->num_vfs; i++) { |
| vfinfo = &adapter->vfinfo[i]; |
| for (j = 0; j < vfinfo->num_vf_mc_hashes; j++) { |
| hw->addr_ctrl.mta_in_use++; |
| vector_reg = (vfinfo->vf_mc_hashes[j] >> 5) & 0x7F; |
| vector_bit = vfinfo->vf_mc_hashes[j] & 0x1F; |
| mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg)); |
| mta_reg |= (1 << vector_bit); |
| IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg); |
| } |
| } |
| } |
| |
| static int ixgbe_set_vf_vlan(struct ixgbe_adapter *adapter, int add, int vid, |
| u32 vf) |
| { |
| return adapter->hw.mac.ops.set_vfta(&adapter->hw, vid, vf, (bool)add); |
| } |
| |
| |
| static void ixgbe_set_vmolr(struct ixgbe_hw *hw, u32 vf, bool aupe) |
| { |
| u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf)); |
| vmolr |= (IXGBE_VMOLR_ROMPE | |
| IXGBE_VMOLR_ROPE | |
| IXGBE_VMOLR_BAM); |
| if (aupe) |
| vmolr |= IXGBE_VMOLR_AUPE; |
| else |
| vmolr &= ~IXGBE_VMOLR_AUPE; |
| IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr); |
| } |
| |
| static void ixgbe_set_vmvir(struct ixgbe_adapter *adapter, u32 vid, u32 vf) |
| { |
| struct ixgbe_hw *hw = &adapter->hw; |
| |
| if (vid) |
| IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), |
| (vid | IXGBE_VMVIR_VLANA_DEFAULT)); |
| else |
| IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), 0); |
| } |
| |
| static inline void ixgbe_vf_reset_event(struct ixgbe_adapter *adapter, u32 vf) |
| { |
| struct ixgbe_hw *hw = &adapter->hw; |
| int rar_entry = hw->mac.num_rar_entries - (vf + 1); |
| |
| /* reset offloads to defaults */ |
| if (adapter->vfinfo[vf].pf_vlan) { |
| ixgbe_set_vf_vlan(adapter, true, |
| adapter->vfinfo[vf].pf_vlan, vf); |
| ixgbe_set_vmvir(adapter, |
| (adapter->vfinfo[vf].pf_vlan | |
| (adapter->vfinfo[vf].pf_qos << |
| VLAN_PRIO_SHIFT)), vf); |
| ixgbe_set_vmolr(hw, vf, false); |
| } else { |
| ixgbe_set_vmvir(adapter, 0, vf); |
| ixgbe_set_vmolr(hw, vf, true); |
| } |
| |
| /* reset multicast table array for vf */ |
| adapter->vfinfo[vf].num_vf_mc_hashes = 0; |
| |
| /* Flush and reset the mta with the new values */ |
| ixgbe_set_rx_mode(adapter->netdev); |
| |
| hw->mac.ops.clear_rar(hw, rar_entry); |
| } |
| |
| static int ixgbe_set_vf_mac(struct ixgbe_adapter *adapter, |
| int vf, unsigned char *mac_addr) |
| { |
| struct ixgbe_hw *hw = &adapter->hw; |
| int rar_entry = hw->mac.num_rar_entries - (vf + 1); |
| |
| memcpy(adapter->vfinfo[vf].vf_mac_addresses, mac_addr, 6); |
| hw->mac.ops.set_rar(hw, rar_entry, mac_addr, vf, IXGBE_RAH_AV); |
| |
| return 0; |
| } |
| |
| int ixgbe_vf_configuration(struct pci_dev *pdev, unsigned int event_mask) |
| { |
| unsigned char vf_mac_addr[6]; |
| struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); |
| unsigned int vfn = (event_mask & 0x3f); |
| |
| bool enable = ((event_mask & 0x10000000U) != 0); |
| |
| if (enable) { |
| random_ether_addr(vf_mac_addr); |
| e_info(probe, "IOV: VF %d is enabled MAC %pM\n", |
| vfn, vf_mac_addr); |
| /* |
| * Store away the VF "permananet" MAC address, it will ask |
| * for it later. |
| */ |
| memcpy(adapter->vfinfo[vfn].vf_mac_addresses, vf_mac_addr, 6); |
| } |
| |
| return 0; |
| } |
| |
| static inline void ixgbe_vf_reset_msg(struct ixgbe_adapter *adapter, u32 vf) |
| { |
| struct ixgbe_hw *hw = &adapter->hw; |
| u32 reg; |
| u32 reg_offset, vf_shift; |
| |
| vf_shift = vf % 32; |
| reg_offset = vf / 32; |
| |
| /* enable transmit and receive for vf */ |
| reg = IXGBE_READ_REG(hw, IXGBE_VFTE(reg_offset)); |
| reg |= (reg | (1 << vf_shift)); |
| IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), reg); |
| |
| reg = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset)); |
| reg |= (reg | (1 << vf_shift)); |
| IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), reg); |
| |
| /* Enable counting of spoofed packets in the SSVPC register */ |
| reg = IXGBE_READ_REG(hw, IXGBE_VMECM(reg_offset)); |
| reg |= (1 << vf_shift); |
| IXGBE_WRITE_REG(hw, IXGBE_VMECM(reg_offset), reg); |
| |
| ixgbe_vf_reset_event(adapter, vf); |
| } |
| |
| static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf) |
| { |
| u32 mbx_size = IXGBE_VFMAILBOX_SIZE; |
| u32 msgbuf[mbx_size]; |
| struct ixgbe_hw *hw = &adapter->hw; |
| s32 retval; |
| int entries; |
| u16 *hash_list; |
| int add, vid; |
| u8 *new_mac; |
| |
| retval = ixgbe_read_mbx(hw, msgbuf, mbx_size, vf); |
| |
| if (retval) |
| pr_err("Error receiving message from VF\n"); |
| |
| /* this is a message we already processed, do nothing */ |
| if (msgbuf[0] & (IXGBE_VT_MSGTYPE_ACK | IXGBE_VT_MSGTYPE_NACK)) |
| return retval; |
| |
| /* |
| * until the vf completes a virtual function reset it should not be |
| * allowed to start any configuration. |
| */ |
| |
| if (msgbuf[0] == IXGBE_VF_RESET) { |
| unsigned char *vf_mac = adapter->vfinfo[vf].vf_mac_addresses; |
| new_mac = (u8 *)(&msgbuf[1]); |
| e_info(probe, "VF Reset msg received from vf %d\n", vf); |
| adapter->vfinfo[vf].clear_to_send = false; |
| ixgbe_vf_reset_msg(adapter, vf); |
| adapter->vfinfo[vf].clear_to_send = true; |
| |
| if (is_valid_ether_addr(new_mac) && |
| !adapter->vfinfo[vf].pf_set_mac) |
| ixgbe_set_vf_mac(adapter, vf, vf_mac); |
| else |
| ixgbe_set_vf_mac(adapter, |
| vf, adapter->vfinfo[vf].vf_mac_addresses); |
| |
| /* reply to reset with ack and vf mac address */ |
| msgbuf[0] = IXGBE_VF_RESET | IXGBE_VT_MSGTYPE_ACK; |
| memcpy(new_mac, vf_mac, IXGBE_ETH_LENGTH_OF_ADDRESS); |
| /* |
| * Piggyback the multicast filter type so VF can compute the |
| * correct vectors |
| */ |
| msgbuf[3] = hw->mac.mc_filter_type; |
| ixgbe_write_mbx(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN, vf); |
| |
| return retval; |
| } |
| |
| if (!adapter->vfinfo[vf].clear_to_send) { |
| msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK; |
| ixgbe_write_mbx(hw, msgbuf, 1, vf); |
| return retval; |
| } |
| |
| switch ((msgbuf[0] & 0xFFFF)) { |
| case IXGBE_VF_SET_MAC_ADDR: |
| new_mac = ((u8 *)(&msgbuf[1])); |
| if (is_valid_ether_addr(new_mac) && |
| !adapter->vfinfo[vf].pf_set_mac) { |
| ixgbe_set_vf_mac(adapter, vf, new_mac); |
| } else if (memcmp(adapter->vfinfo[vf].vf_mac_addresses, |
| new_mac, ETH_ALEN)) { |
| e_warn(drv, "VF %d attempted to override " |
| "administratively set MAC address\nReload " |
| "the VF driver to resume operations\n", vf); |
| retval = -1; |
| } |
| break; |
| case IXGBE_VF_SET_MULTICAST: |
| entries = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) |
| >> IXGBE_VT_MSGINFO_SHIFT; |
| hash_list = (u16 *)&msgbuf[1]; |
| retval = ixgbe_set_vf_multicasts(adapter, entries, |
| hash_list, vf); |
| break; |
| case IXGBE_VF_SET_LPE: |
| WARN_ON((msgbuf[0] & 0xFFFF) == IXGBE_VF_SET_LPE); |
| break; |
| case IXGBE_VF_SET_VLAN: |
| add = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) |
| >> IXGBE_VT_MSGINFO_SHIFT; |
| vid = (msgbuf[1] & IXGBE_VLVF_VLANID_MASK); |
| if (adapter->vfinfo[vf].pf_vlan) { |
| e_warn(drv, "VF %d attempted to override " |
| "administratively set VLAN configuration\n" |
| "Reload the VF driver to resume operations\n", |
| vf); |
| retval = -1; |
| } else { |
| retval = ixgbe_set_vf_vlan(adapter, add, vid, vf); |
| } |
| break; |
| default: |
| e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]); |
| retval = IXGBE_ERR_MBX; |
| break; |
| } |
| |
| /* notify the VF of the results of what it sent us */ |
| if (retval) |
| msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK; |
| else |
| msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK; |
| |
| msgbuf[0] |= IXGBE_VT_MSGTYPE_CTS; |
| |
| ixgbe_write_mbx(hw, msgbuf, 1, vf); |
| |
| return retval; |
| } |
| |
| static void ixgbe_rcv_ack_from_vf(struct ixgbe_adapter *adapter, u32 vf) |
| { |
| struct ixgbe_hw *hw = &adapter->hw; |
| u32 msg = IXGBE_VT_MSGTYPE_NACK; |
| |
| /* if device isn't clear to send it shouldn't be reading either */ |
| if (!adapter->vfinfo[vf].clear_to_send) |
| ixgbe_write_mbx(hw, &msg, 1, vf); |
| } |
| |
| void ixgbe_msg_task(struct ixgbe_adapter *adapter) |
| { |
| struct ixgbe_hw *hw = &adapter->hw; |
| u32 vf; |
| |
| for (vf = 0; vf < adapter->num_vfs; vf++) { |
| /* process any reset requests */ |
| if (!ixgbe_check_for_rst(hw, vf)) |
| ixgbe_vf_reset_event(adapter, vf); |
| |
| /* process any messages pending */ |
| if (!ixgbe_check_for_msg(hw, vf)) |
| ixgbe_rcv_msg_from_vf(adapter, vf); |
| |
| /* process any acks */ |
| if (!ixgbe_check_for_ack(hw, vf)) |
| ixgbe_rcv_ack_from_vf(adapter, vf); |
| } |
| } |
| |
| void ixgbe_disable_tx_rx(struct ixgbe_adapter *adapter) |
| { |
| struct ixgbe_hw *hw = &adapter->hw; |
| |
| /* disable transmit and receive for all vfs */ |
| IXGBE_WRITE_REG(hw, IXGBE_VFTE(0), 0); |
| IXGBE_WRITE_REG(hw, IXGBE_VFTE(1), 0); |
| |
| IXGBE_WRITE_REG(hw, IXGBE_VFRE(0), 0); |
| IXGBE_WRITE_REG(hw, IXGBE_VFRE(1), 0); |
| } |
| |
| void ixgbe_ping_all_vfs(struct ixgbe_adapter *adapter) |
| { |
| struct ixgbe_hw *hw = &adapter->hw; |
| u32 ping; |
| int i; |
| |
| for (i = 0 ; i < adapter->num_vfs; i++) { |
| ping = IXGBE_PF_CONTROL_MSG; |
| if (adapter->vfinfo[i].clear_to_send) |
| ping |= IXGBE_VT_MSGTYPE_CTS; |
| ixgbe_write_mbx(hw, &ping, 1, i); |
| } |
| } |
| |
| int ixgbe_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac) |
| { |
| struct ixgbe_adapter *adapter = netdev_priv(netdev); |
| if (!is_valid_ether_addr(mac) || (vf >= adapter->num_vfs)) |
| return -EINVAL; |
| adapter->vfinfo[vf].pf_set_mac = true; |
| dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n", mac, vf); |
| dev_info(&adapter->pdev->dev, "Reload the VF driver to make this" |
| " change effective."); |
| if (test_bit(__IXGBE_DOWN, &adapter->state)) { |
| dev_warn(&adapter->pdev->dev, "The VF MAC address has been set," |
| " but the PF device is not up.\n"); |
| dev_warn(&adapter->pdev->dev, "Bring the PF device up before" |
| " attempting to use the VF device.\n"); |
| } |
| return ixgbe_set_vf_mac(adapter, vf, mac); |
| } |
| |
| int ixgbe_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, u8 qos) |
| { |
| int err = 0; |
| struct ixgbe_adapter *adapter = netdev_priv(netdev); |
| struct ixgbe_hw *hw = &adapter->hw; |
| |
| if ((vf >= adapter->num_vfs) || (vlan > 4095) || (qos > 7)) |
| return -EINVAL; |
| if (vlan || qos) { |
| err = ixgbe_set_vf_vlan(adapter, true, vlan, vf); |
| if (err) |
| goto out; |
| ixgbe_set_vmvir(adapter, vlan | (qos << VLAN_PRIO_SHIFT), vf); |
| ixgbe_set_vmolr(hw, vf, false); |
| hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf); |
| adapter->vfinfo[vf].pf_vlan = vlan; |
| adapter->vfinfo[vf].pf_qos = qos; |
| dev_info(&adapter->pdev->dev, |
| "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf); |
| if (test_bit(__IXGBE_DOWN, &adapter->state)) { |
| dev_warn(&adapter->pdev->dev, |
| "The VF VLAN has been set," |
| " but the PF device is not up.\n"); |
| dev_warn(&adapter->pdev->dev, |
| "Bring the PF device up before" |
| " attempting to use the VF device.\n"); |
| } |
| } else { |
| err = ixgbe_set_vf_vlan(adapter, false, |
| adapter->vfinfo[vf].pf_vlan, vf); |
| ixgbe_set_vmvir(adapter, vlan, vf); |
| ixgbe_set_vmolr(hw, vf, true); |
| hw->mac.ops.set_vlan_anti_spoofing(hw, false, vf); |
| adapter->vfinfo[vf].pf_vlan = 0; |
| adapter->vfinfo[vf].pf_qos = 0; |
| } |
| out: |
| return err; |
| } |
| |
| int ixgbe_ndo_set_vf_bw(struct net_device *netdev, int vf, int tx_rate) |
| { |
| return -EOPNOTSUPP; |
| } |
| |
| int ixgbe_ndo_get_vf_config(struct net_device *netdev, |
| int vf, struct ifla_vf_info *ivi) |
| { |
| struct ixgbe_adapter *adapter = netdev_priv(netdev); |
| if (vf >= adapter->num_vfs) |
| return -EINVAL; |
| ivi->vf = vf; |
| memcpy(&ivi->mac, adapter->vfinfo[vf].vf_mac_addresses, ETH_ALEN); |
| ivi->tx_rate = 0; |
| ivi->vlan = adapter->vfinfo[vf].pf_vlan; |
| ivi->qos = adapter->vfinfo[vf].pf_qos; |
| return 0; |
| } |