diff options
Diffstat (limited to 'drivers/net/ethernet/intel/i40e/i40e_ethtool.c')
| -rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e_ethtool.c | 1765 |
1 files changed, 1765 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c new file mode 100644 index 00000000000..4a488ffcd6b --- /dev/null +++ b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c @@ -0,0 +1,1765 @@ +/******************************************************************************* + * + * Intel Ethernet Controller XL710 Family Linux Driver + * Copyright(c) 2013 - 2014 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, see <http://www.gnu.org/licenses/>. + * + * 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 + * + ******************************************************************************/ + +/* ethtool support for i40e */ + +#include "i40e.h" +#include "i40e_diag.h" + +struct i40e_stats { + char stat_string[ETH_GSTRING_LEN]; + int sizeof_stat; + int stat_offset; +}; + +#define I40E_STAT(_type, _name, _stat) { \ + .stat_string = _name, \ + .sizeof_stat = FIELD_SIZEOF(_type, _stat), \ + .stat_offset = offsetof(_type, _stat) \ +} +#define I40E_NETDEV_STAT(_net_stat) \ + I40E_STAT(struct net_device_stats, #_net_stat, _net_stat) +#define I40E_PF_STAT(_name, _stat) \ + I40E_STAT(struct i40e_pf, _name, _stat) +#define I40E_VSI_STAT(_name, _stat) \ + I40E_STAT(struct i40e_vsi, _name, _stat) +#define I40E_VEB_STAT(_name, _stat) \ + I40E_STAT(struct i40e_veb, _name, _stat) + +static const struct i40e_stats i40e_gstrings_net_stats[] = { + I40E_NETDEV_STAT(rx_packets), + I40E_NETDEV_STAT(tx_packets), + I40E_NETDEV_STAT(rx_bytes), + I40E_NETDEV_STAT(tx_bytes), + I40E_NETDEV_STAT(rx_errors), + I40E_NETDEV_STAT(tx_errors), + I40E_NETDEV_STAT(rx_dropped), + I40E_NETDEV_STAT(tx_dropped), + I40E_NETDEV_STAT(collisions), + I40E_NETDEV_STAT(rx_length_errors), + I40E_NETDEV_STAT(rx_crc_errors), +}; + +static const struct i40e_stats i40e_gstrings_veb_stats[] = { + I40E_VEB_STAT("rx_bytes", stats.rx_bytes), + I40E_VEB_STAT("tx_bytes", stats.tx_bytes), + I40E_VEB_STAT("rx_unicast", stats.rx_unicast), + I40E_VEB_STAT("tx_unicast", stats.tx_unicast), + I40E_VEB_STAT("rx_multicast", stats.rx_multicast), + I40E_VEB_STAT("tx_multicast", stats.tx_multicast), + I40E_VEB_STAT("rx_broadcast", stats.rx_broadcast), + I40E_VEB_STAT("tx_broadcast", stats.tx_broadcast), + I40E_VEB_STAT("rx_discards", stats.rx_discards), + I40E_VEB_STAT("tx_discards", stats.tx_discards), + I40E_VEB_STAT("tx_errors", stats.tx_errors), + I40E_VEB_STAT("rx_unknown_protocol", stats.rx_unknown_protocol), +}; + +static const struct i40e_stats i40e_gstrings_misc_stats[] = { + I40E_VSI_STAT("rx_unicast", eth_stats.rx_unicast), + I40E_VSI_STAT("tx_unicast", eth_stats.tx_unicast), + I40E_VSI_STAT("rx_multicast", eth_stats.rx_multicast), + I40E_VSI_STAT("tx_multicast", eth_stats.tx_multicast), + I40E_VSI_STAT("rx_broadcast", eth_stats.rx_broadcast), + I40E_VSI_STAT("tx_broadcast", eth_stats.tx_broadcast), + I40E_VSI_STAT("rx_unknown_protocol", eth_stats.rx_unknown_protocol), +}; + +static int i40e_add_fdir_ethtool(struct i40e_vsi *vsi, + struct ethtool_rxnfc *cmd); + +/* These PF_STATs might look like duplicates of some NETDEV_STATs, + * but they are separate. This device supports Virtualization, and + * as such might have several netdevs supporting VMDq and FCoE going + * through a single port. The NETDEV_STATs are for individual netdevs + * seen at the top of the stack, and the PF_STATs are for the physical + * function at the bottom of the stack hosting those netdevs. + * + * The PF_STATs are appended to the netdev stats only when ethtool -S + * is queried on the base PF netdev, not on the VMDq or FCoE netdev. + */ +static struct i40e_stats i40e_gstrings_stats[] = { + I40E_PF_STAT("rx_bytes", stats.eth.rx_bytes), + I40E_PF_STAT("tx_bytes", stats.eth.tx_bytes), + I40E_PF_STAT("rx_unicast", stats.eth.rx_unicast), + I40E_PF_STAT("tx_unicast", stats.eth.tx_unicast), + I40E_PF_STAT("rx_multicast", stats.eth.rx_multicast), + I40E_PF_STAT("tx_multicast", stats.eth.tx_multicast), + I40E_PF_STAT("rx_broadcast", stats.eth.rx_broadcast), + I40E_PF_STAT("tx_broadcast", stats.eth.tx_broadcast), + I40E_PF_STAT("tx_errors", stats.eth.tx_errors), + I40E_PF_STAT("rx_dropped", stats.eth.rx_discards), + I40E_PF_STAT("tx_dropped", stats.eth.tx_discards), + I40E_PF_STAT("tx_dropped_link_down", stats.tx_dropped_link_down), + I40E_PF_STAT("crc_errors", stats.crc_errors), + I40E_PF_STAT("illegal_bytes", stats.illegal_bytes), + I40E_PF_STAT("mac_local_faults", stats.mac_local_faults), + I40E_PF_STAT("mac_remote_faults", stats.mac_remote_faults), + I40E_PF_STAT("tx_timeout", tx_timeout_count), + I40E_PF_STAT("rx_csum_bad", hw_csum_rx_error), + I40E_PF_STAT("rx_length_errors", stats.rx_length_errors), + I40E_PF_STAT("link_xon_rx", stats.link_xon_rx), + I40E_PF_STAT("link_xoff_rx", stats.link_xoff_rx), + I40E_PF_STAT("link_xon_tx", stats.link_xon_tx), + I40E_PF_STAT("link_xoff_tx", stats.link_xoff_tx), + I40E_PF_STAT("rx_size_64", stats.rx_size_64), + I40E_PF_STAT("rx_size_127", stats.rx_size_127), + I40E_PF_STAT("rx_size_255", stats.rx_size_255), + I40E_PF_STAT("rx_size_511", stats.rx_size_511), + I40E_PF_STAT("rx_size_1023", stats.rx_size_1023), + I40E_PF_STAT("rx_size_1522", stats.rx_size_1522), + I40E_PF_STAT("rx_size_big", stats.rx_size_big), + I40E_PF_STAT("tx_size_64", stats.tx_size_64), + I40E_PF_STAT("tx_size_127", stats.tx_size_127), + I40E_PF_STAT("tx_size_255", stats.tx_size_255), + I40E_PF_STAT("tx_size_511", stats.tx_size_511), + I40E_PF_STAT("tx_size_1023", stats.tx_size_1023), + I40E_PF_STAT("tx_size_1522", stats.tx_size_1522), + I40E_PF_STAT("tx_size_big", stats.tx_size_big), + I40E_PF_STAT("rx_undersize", stats.rx_undersize), + I40E_PF_STAT("rx_fragments", stats.rx_fragments), + I40E_PF_STAT("rx_oversize", stats.rx_oversize), + I40E_PF_STAT("rx_jabber", stats.rx_jabber), + I40E_PF_STAT("VF_admin_queue_requests", vf_aq_requests), + I40E_PF_STAT("rx_hwtstamp_cleared", rx_hwtstamp_cleared), + I40E_PF_STAT("fdir_atr_match", stats.fd_atr_match), + I40E_PF_STAT("fdir_sb_match", stats.fd_sb_match), + + /* LPI stats */ + I40E_PF_STAT("tx_lpi_status", stats.tx_lpi_status), + I40E_PF_STAT("rx_lpi_status", stats.rx_lpi_status), + I40E_PF_STAT("tx_lpi_count", stats.tx_lpi_count), + I40E_PF_STAT("rx_lpi_count", stats.rx_lpi_count), +}; + +#define I40E_QUEUE_STATS_LEN(n) \ + (((struct i40e_netdev_priv *)netdev_priv((n)))->vsi->num_queue_pairs \ + * 2 /* Tx and Rx together */ \ + * (sizeof(struct i40e_queue_stats) / sizeof(u64))) +#define I40E_GLOBAL_STATS_LEN ARRAY_SIZE(i40e_gstrings_stats) +#define I40E_NETDEV_STATS_LEN ARRAY_SIZE(i40e_gstrings_net_stats) +#define I40E_MISC_STATS_LEN ARRAY_SIZE(i40e_gstrings_misc_stats) +#define I40E_VSI_STATS_LEN(n) (I40E_NETDEV_STATS_LEN + \ + I40E_MISC_STATS_LEN + \ + I40E_QUEUE_STATS_LEN((n))) +#define I40E_PFC_STATS_LEN ( \ + (FIELD_SIZEOF(struct i40e_pf, stats.priority_xoff_rx) + \ + FIELD_SIZEOF(struct i40e_pf, stats.priority_xon_rx) + \ + FIELD_SIZEOF(struct i40e_pf, stats.priority_xoff_tx) + \ + FIELD_SIZEOF(struct i40e_pf, stats.priority_xon_tx) + \ + FIELD_SIZEOF(struct i40e_pf, stats.priority_xon_2_xoff)) \ + / sizeof(u64)) +#define I40E_VEB_STATS_LEN ARRAY_SIZE(i40e_gstrings_veb_stats) +#define I40E_PF_STATS_LEN(n) (I40E_GLOBAL_STATS_LEN + \ + I40E_PFC_STATS_LEN + \ + I40E_VSI_STATS_LEN((n))) + +enum i40e_ethtool_test_id { + I40E_ETH_TEST_REG = 0, + I40E_ETH_TEST_EEPROM, + I40E_ETH_TEST_INTR, + I40E_ETH_TEST_LOOPBACK, + I40E_ETH_TEST_LINK, +}; + +static const char i40e_gstrings_test[][ETH_GSTRING_LEN] = { + "Register test (offline)", + "Eeprom test (offline)", + "Interrupt test (offline)", + "Loopback test (offline)", + "Link test (on/offline)" +}; + +#define I40E_TEST_LEN (sizeof(i40e_gstrings_test) / ETH_GSTRING_LEN) + +/** + * i40e_get_settings - Get Link Speed and Duplex settings + * @netdev: network interface device structure + * @ecmd: ethtool command + * + * Reports speed/duplex settings based on media_type + **/ +static int i40e_get_settings(struct net_device *netdev, + struct ethtool_cmd *ecmd) +{ + struct i40e_netdev_priv *np = netdev_priv(netdev); + struct i40e_pf *pf = np->vsi->back; + struct i40e_hw *hw = &pf->hw; + struct i40e_link_status *hw_link_info = &hw->phy.link_info; + bool link_up = hw_link_info->link_info & I40E_AQ_LINK_UP; + u32 link_speed = hw_link_info->link_speed; + + /* hardware is either in 40G mode or 10G mode + * NOTE: this section initializes supported and advertising + */ + switch (hw_link_info->phy_type) { + case I40E_PHY_TYPE_40GBASE_CR4: + case I40E_PHY_TYPE_40GBASE_CR4_CU: + ecmd->supported = SUPPORTED_40000baseCR4_Full; + ecmd->advertising = ADVERTISED_40000baseCR4_Full; + break; + case I40E_PHY_TYPE_40GBASE_KR4: + ecmd->supported = SUPPORTED_40000baseKR4_Full; + ecmd->advertising = ADVERTISED_40000baseKR4_Full; + break; + case I40E_PHY_TYPE_40GBASE_SR4: + ecmd->supported = SUPPORTED_40000baseSR4_Full; + ecmd->advertising = ADVERTISED_40000baseSR4_Full; + break; + case I40E_PHY_TYPE_40GBASE_LR4: + ecmd->supported = SUPPORTED_40000baseLR4_Full; + ecmd->advertising = ADVERTISED_40000baseLR4_Full; + break; + case I40E_PHY_TYPE_10GBASE_KX4: + ecmd->supported = SUPPORTED_10000baseKX4_Full; + ecmd->advertising = ADVERTISED_10000baseKX4_Full; + break; + case I40E_PHY_TYPE_10GBASE_KR: + ecmd->supported = SUPPORTED_10000baseKR_Full; + ecmd->advertising = ADVERTISED_10000baseKR_Full; + break; + default: + if (i40e_is_40G_device(hw->device_id)) { + ecmd->supported = SUPPORTED_40000baseSR4_Full; + ecmd->advertising = ADVERTISED_40000baseSR4_Full; + } else { + ecmd->supported = SUPPORTED_10000baseT_Full; + ecmd->advertising = ADVERTISED_10000baseT_Full; + } + break; + } + + ecmd->supported |= SUPPORTED_Autoneg; + ecmd->advertising |= ADVERTISED_Autoneg; + ecmd->autoneg = ((hw_link_info->an_info & I40E_AQ_AN_COMPLETED) ? + AUTONEG_ENABLE : AUTONEG_DISABLE); + + switch (hw->phy.media_type) { + case I40E_MEDIA_TYPE_BACKPLANE: + ecmd->supported |= SUPPORTED_Backplane; + ecmd->advertising |= ADVERTISED_Backplane; + ecmd->port = PORT_NONE; + break; + case I40E_MEDIA_TYPE_BASET: + ecmd->supported |= SUPPORTED_TP; + ecmd->advertising |= ADVERTISED_TP; + ecmd->port = PORT_TP; + break; + case I40E_MEDIA_TYPE_DA: + case I40E_MEDIA_TYPE_CX4: + ecmd->supported |= SUPPORTED_FIBRE; + ecmd->advertising |= ADVERTISED_FIBRE; + ecmd->port = PORT_DA; + break; + case I40E_MEDIA_TYPE_FIBER: + ecmd->supported |= SUPPORTED_FIBRE; + ecmd->advertising |= ADVERTISED_FIBRE; + ecmd->port = PORT_FIBRE; + break; + case I40E_MEDIA_TYPE_UNKNOWN: + default: + ecmd->port = PORT_OTHER; + break; + } + + ecmd->transceiver = XCVR_EXTERNAL; + + if (link_up) { + switch (link_speed) { + case I40E_LINK_SPEED_40GB: + /* need a SPEED_40000 in ethtool.h */ + ethtool_cmd_speed_set(ecmd, 40000); + break; + case I40E_LINK_SPEED_10GB: + ethtool_cmd_speed_set(ecmd, SPEED_10000); + break; + default: + break; + } + ecmd->duplex = DUPLEX_FULL; + } else { + ethtool_cmd_speed_set(ecmd, SPEED_UNKNOWN); + ecmd->duplex = DUPLEX_UNKNOWN; + } + + return 0; +} + +/** + * i40e_get_pauseparam - Get Flow Control status + * Return tx/rx-pause status + **/ +static void i40e_get_pauseparam(struct net_device *netdev, + struct ethtool_pauseparam *pause) +{ + struct i40e_netdev_priv *np = netdev_priv(netdev); + struct i40e_pf *pf = np->vsi->back; + struct i40e_hw *hw = &pf->hw; + struct i40e_link_status *hw_link_info = &hw->phy.link_info; + + pause->autoneg = + ((hw_link_info->an_info & I40E_AQ_AN_COMPLETED) ? + AUTONEG_ENABLE : AUTONEG_DISABLE); + + if (hw->fc.current_mode == I40E_FC_RX_PAUSE) { + pause->rx_pause = 1; + } else if (hw->fc.current_mode == I40E_FC_TX_PAUSE) { + pause->tx_pause = 1; + } else if (hw->fc.current_mode == I40E_FC_FULL) { + pause->rx_pause = 1; + pause->tx_pause = 1; + } +} + +static u32 i40e_get_msglevel(struct net_device *netdev) +{ + struct i40e_netdev_priv *np = netdev_priv(netdev); + struct i40e_pf *pf = np->vsi->back; + + return pf->msg_enable; +} + +static void i40e_set_msglevel(struct net_device *netdev, u32 data) +{ + struct i40e_netdev_priv *np = netdev_priv(netdev); + struct i40e_pf *pf = np->vsi->back; + + if (I40E_DEBUG_USER & data) + pf->hw.debug_mask = data; + pf->msg_enable = data; +} + +static int i40e_get_regs_len(struct net_device *netdev) +{ + int reg_count = 0; + int i; + + for (i = 0; i40e_reg_list[i].offset != 0; i++) + reg_count += i40e_reg_list[i].elements; + + return reg_count * sizeof(u32); +} + +static void i40e_get_regs(struct net_device *netdev, struct ethtool_regs *regs, + void *p) +{ + struct i40e_netdev_priv *np = netdev_priv(netdev); + struct i40e_pf *pf = np->vsi->back; + struct i40e_hw *hw = &pf->hw; + u32 *reg_buf = p; + int i, j, ri; + u32 reg; + + /* Tell ethtool which driver-version-specific regs output we have. + * + * At some point, if we have ethtool doing special formatting of + * this data, it will rely on this version number to know how to + * interpret things. Hence, this needs to be updated if/when the + * diags register table is changed. + */ + regs->version = 1; + + /* loop through the diags reg table for what to print */ + ri = 0; + for (i = 0; i40e_reg_list[i].offset != 0; i++) { + for (j = 0; j < i40e_reg_list[i].elements; j++) { + reg = i40e_reg_list[i].offset + + (j * i40e_reg_list[i].stride); + reg_buf[ri++] = rd32(hw, reg); + } + } + +} + +static int i40e_get_eeprom(struct net_device *netdev, + struct ethtool_eeprom *eeprom, u8 *bytes) +{ + struct i40e_netdev_priv *np = netdev_priv(netdev); + struct i40e_hw *hw = &np->vsi->back->hw; + struct i40e_pf *pf = np->vsi->back; + int ret_val = 0, len; + u8 *eeprom_buff; + u16 i, sectors; + bool last; +#define I40E_NVM_SECTOR_SIZE 4096 + if (eeprom->len == 0) + return -EINVAL; + + eeprom->magic = hw->vendor_id | (hw->device_id << 16); + + eeprom_buff = kzalloc(eeprom->len, GFP_KERNEL); + if (!eeprom_buff) + return -ENOMEM; + + ret_val = i40e_acquire_nvm(hw, I40E_RESOURCE_READ); + if (ret_val) { + dev_info(&pf->pdev->dev, + "Failed Acquiring NVM resource for read err=%d status=0x%x\n", + ret_val, hw->aq.asq_last_status); + goto free_buff; + } + + sectors = eeprom->len / I40E_NVM_SECTOR_SIZE; + sectors += (eeprom->len % I40E_NVM_SECTOR_SIZE) ? 1 : 0; + len = I40E_NVM_SECTOR_SIZE; + last = false; + for (i = 0; i < sectors; i++) { + if (i == (sectors - 1)) { + len = eeprom->len - (I40E_NVM_SECTOR_SIZE * i); + last = true; + } + ret_val = i40e_aq_read_nvm(hw, 0x0, + eeprom->offset + (I40E_NVM_SECTOR_SIZE * i), + len, + eeprom_buff + (I40E_NVM_SECTOR_SIZE * i), + last, NULL); + if (ret_val) { + dev_info(&pf->pdev->dev, + "read NVM failed err=%d status=0x%x\n", + ret_val, hw->aq.asq_last_status); + goto release_nvm; + } + } + +release_nvm: + i40e_release_nvm(hw); + memcpy(bytes, eeprom_buff, eeprom->len); +free_buff: + kfree(eeprom_buff); + return ret_val; +} + +static int i40e_get_eeprom_len(struct net_device *netdev) +{ + struct i40e_netdev_priv *np = netdev_priv(netdev); + struct i40e_hw *hw = &np->vsi->back->hw; + u32 val; + + val = (rd32(hw, I40E_GLPCI_LBARCTRL) + & I40E_GLPCI_LBARCTRL_FL_SIZE_MASK) + >> I40E_GLPCI_LBARCTRL_FL_SIZE_SHIFT; + /* register returns value in power of 2, 64Kbyte chunks. */ + val = (64 * 1024) * (1 << val); + return val; +} + +static void i40e_get_drvinfo(struct net_device *netdev, + struct ethtool_drvinfo *drvinfo) +{ + struct i40e_netdev_priv *np = netdev_priv(netdev); + struct i40e_vsi *vsi = np->vsi; + struct i40e_pf *pf = vsi->back; + + strlcpy(drvinfo->driver, i40e_driver_name, sizeof(drvinfo->driver)); + strlcpy(drvinfo->version, i40e_driver_version_str, + sizeof(drvinfo->version)); + strlcpy(drvinfo->fw_version, i40e_fw_version_str(&pf->hw), + sizeof(drvinfo->fw_version)); + strlcpy(drvinfo->bus_info, pci_name(pf->pdev), + sizeof(drvinfo->bus_info)); +} + +static void i40e_get_ringparam(struct net_device *netdev, + struct ethtool_ringparam *ring) +{ + struct i40e_netdev_priv *np = netdev_priv(netdev); + struct i40e_pf *pf = np->vsi->back; + struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi]; + + ring->rx_max_pending = I40E_MAX_NUM_DESCRIPTORS; + ring->tx_max_pending = I40E_MAX_NUM_DESCRIPTORS; + ring->rx_mini_max_pending = 0; + ring->rx_jumbo_max_pending = 0; + ring->rx_pending = vsi->rx_rings[0]->count; + ring->tx_pending = vsi->tx_rings[0]->count; + ring->rx_mini_pending = 0; + ring->rx_jumbo_pending = 0; +} + +static int i40e_set_ringparam(struct net_device *netdev, + struct ethtool_ringparam *ring) +{ + struct i40e_ring *tx_rings = NULL, *rx_rings = NULL; + struct i40e_netdev_priv *np = netdev_priv(netdev); + struct i40e_vsi *vsi = np->vsi; + struct i40e_pf *pf = vsi->back; + u32 new_rx_count, new_tx_count; + int i, err = 0; + + if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending)) + return -EINVAL; + + if (ring->tx_pending > I40E_MAX_NUM_DESCRIPTORS || + ring->tx_pending < I40E_MIN_NUM_DESCRIPTORS || + ring->rx_pending > I40E_MAX_NUM_DESCRIPTORS || + ring->rx_pending < I40E_MIN_NUM_DESCRIPTORS) { + netdev_info(netdev, + "Descriptors requested (Tx: %d / Rx: %d) out of range [%d-%d]\n", + ring->tx_pending, ring->rx_pending, + I40E_MIN_NUM_DESCRIPTORS, I40E_MAX_NUM_DESCRIPTORS); + return -EINVAL; + } + + new_tx_count = ALIGN(ring->tx_pending, I40E_REQ_DESCRIPTOR_MULTIPLE); + new_rx_count = ALIGN(ring->rx_pending, I40E_REQ_DESCRIPTOR_MULTIPLE); + + /* if nothing to do return success */ + if ((new_tx_count == vsi->tx_rings[0]->count) && + (new_rx_count == vsi->rx_rings[0]->count)) + return 0; + + while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state)) + usleep_range(1000, 2000); + + if (!netif_running(vsi->netdev)) { + /* simple case - set for the next time the netdev is started */ + for (i = 0; i < vsi->num_queue_pairs; i++) { + vsi->tx_rings[i]->count = new_tx_count; + vsi->rx_rings[i]->count = new_rx_count; + } + goto done; + } + + /* We can't just free everything and then setup again, + * because the ISRs in MSI-X mode get passed pointers + * to the Tx and Rx ring structs. + */ + + /* alloc updated Tx resources */ + if (new_tx_count != vsi->tx_rings[0]->count) { + netdev_info(netdev, + "Changing Tx descriptor count from %d to %d.\n", + vsi->tx_rings[0]->count, new_tx_count); + tx_rings = kcalloc(vsi->alloc_queue_pairs, + sizeof(struct i40e_ring), GFP_KERNEL); + if (!tx_rings) { + err = -ENOMEM; + goto done; + } + + for (i = 0; i < vsi->num_queue_pairs; i++) { + /* clone ring and setup updated count */ + tx_rings[i] = *vsi->tx_rings[i]; + tx_rings[i].count = new_tx_count; + err = i40e_setup_tx_descriptors(&tx_rings[i]); + if (err) { + while (i) { + i--; + i40e_free_tx_resources(&tx_rings[i]); + } + kfree(tx_rings); + tx_rings = NULL; + + goto done; + } + } + } + + /* alloc updated Rx resources */ + if (new_rx_count != vsi->rx_rings[0]->count) { + netdev_info(netdev, + "Changing Rx descriptor count from %d to %d\n", + vsi->rx_rings[0]->count, new_rx_count); + rx_rings = kcalloc(vsi->alloc_queue_pairs, + sizeof(struct i40e_ring), GFP_KERNEL); + if (!rx_rings) { + err = -ENOMEM; + goto free_tx; + } + + for (i = 0; i < vsi->num_queue_pairs; i++) { + /* clone ring and setup updated count */ + rx_rings[i] = *vsi->rx_rings[i]; + rx_rings[i].count = new_rx_count; + err = i40e_setup_rx_descriptors(&rx_rings[i]); + if (err) { + while (i) { + i--; + i40e_free_rx_resources(&rx_rings[i]); + } + kfree(rx_rings); + rx_rings = NULL; + + goto free_tx; + } + } + } + + /* Bring interface down, copy in the new ring info, + * then restore the interface + */ + i40e_down(vsi); + + if (tx_rings) { + for (i = 0; i < vsi->num_queue_pairs; i++) { + i40e_free_tx_resources(vsi->tx_rings[i]); + *vsi->tx_rings[i] = tx_rings[i]; + } + kfree(tx_rings); + tx_rings = NULL; + } + + if (rx_rings) { + for (i = 0; i < vsi->num_queue_pairs; i++) { + i40e_free_rx_resources(vsi->rx_rings[i]); + *vsi->rx_rings[i] = rx_rings[i]; + } + kfree(rx_rings); + rx_rings = NULL; + } + + i40e_up(vsi); + +free_tx: + /* error cleanup if the Rx allocations failed after getting Tx */ + if (tx_rings) { + for (i = 0; i < vsi->num_queue_pairs; i++) + i40e_free_tx_resources(&tx_rings[i]); + kfree(tx_rings); + tx_rings = NULL; + } + +done: + clear_bit(__I40E_CONFIG_BUSY, &pf->state); + + return err; +} + +static int i40e_get_sset_count(struct net_device *netdev, int sset) +{ + struct i40e_netdev_priv *np = netdev_priv(netdev); + struct i40e_vsi *vsi = np->vsi; + struct i40e_pf *pf = vsi->back; + + switch (sset) { + case ETH_SS_TEST: + return I40E_TEST_LEN; + case ETH_SS_STATS: + if (vsi == pf->vsi[pf->lan_vsi]) { + int len = I40E_PF_STATS_LEN(netdev); + + if (pf->lan_veb != I40E_NO_VEB) + len += I40E_VEB_STATS_LEN; + return len; + } else { + return I40E_VSI_STATS_LEN(netdev); + } + default: + return -EOPNOTSUPP; + } +} + +static void i40e_get_ethtool_stats(struct net_device *netdev, + struct ethtool_stats *stats, u64 *data) +{ + struct i40e_netdev_priv *np = netdev_priv(netdev); + struct i40e_ring *tx_ring, *rx_ring; + struct i40e_vsi *vsi = np->vsi; + struct i40e_pf *pf = vsi->back; + int i = 0; + char *p; + int j; + struct rtnl_link_stats64 *net_stats = i40e_get_vsi_stats_struct(vsi); + unsigned int start; + + i40e_update_stats(vsi); + + for (j = 0; j < I40E_NETDEV_STATS_LEN; j++) { + p = (char *)net_stats + i40e_gstrings_net_stats[j].stat_offset; + data[i++] = (i40e_gstrings_net_stats[j].sizeof_stat == + sizeof(u64)) ? *(u64 *)p : *(u32 *)p; + } + for (j = 0; j < I40E_MISC_STATS_LEN; j++) { + p = (char *)vsi + i40e_gstrings_misc_stats[j].stat_offset; + data[i++] = (i40e_gstrings_misc_stats[j].sizeof_stat == + sizeof(u64)) ? *(u64 *)p : *(u32 *)p; + } + rcu_read_lock(); + for (j = 0; j < vsi->num_queue_pairs; j++) { + tx_ring = ACCESS_ONCE(vsi->tx_rings[j]); + + if (!tx_ring) + continue; + + /* process Tx ring statistics */ + do { + start = u64_stats_fetch_begin_irq(&tx_ring->syncp); + data[i] = tx_ring->stats.packets; + data[i + 1] = tx_ring->stats.bytes; + } while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start)); + i += 2; + + /* Rx ring is the 2nd half of the queue pair */ + rx_ring = &tx_ring[1]; + do { + start = u64_stats_fetch_begin_irq(&rx_ring->syncp); + data[i] = rx_ring->stats.packets; + data[i + 1] = rx_ring->stats.bytes; + } while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start)); + i += 2; + } + rcu_read_unlock(); + if (vsi != pf->vsi[pf->lan_vsi]) + return; + + if (pf->lan_veb != I40E_NO_VEB) { + struct i40e_veb *veb = pf->veb[pf->lan_veb]; + for (j = 0; j < I40E_VEB_STATS_LEN; j++) { + p = (char *)veb; + p += i40e_gstrings_veb_stats[j].stat_offset; + data[i++] = (i40e_gstrings_veb_stats[j].sizeof_stat == + sizeof(u64)) ? *(u64 *)p : *(u32 *)p; + } + } + for (j = 0; j < I40E_GLOBAL_STATS_LEN; j++) { + p = (char *)pf + i40e_gstrings_stats[j].stat_offset; + data[i++] = (i40e_gstrings_stats[j].sizeof_stat == + sizeof(u64)) ? *(u64 *)p : *(u32 *)p; + } + for (j = 0; j < I40E_MAX_USER_PRIORITY; j++) { + data[i++] = pf->stats.priority_xon_tx[j]; + data[i++] = pf->stats.priority_xoff_tx[j]; + } + for (j = 0; j < I40E_MAX_USER_PRIORITY; j++) { + data[i++] = pf->stats.priority_xon_rx[j]; + data[i++] = pf->stats.priority_xoff_rx[j]; + } + for (j = 0; j < I40E_MAX_USER_PRIORITY; j++) + data[i++] = pf->stats.priority_xon_2_xoff[j]; +} + +static void i40e_get_strings(struct net_device *netdev, u32 stringset, + u8 *data) +{ + struct i40e_netdev_priv *np = netdev_priv(netdev); + struct i40e_vsi *vsi = np->vsi; + struct i40e_pf *pf = vsi->back; + char *p = (char *)data; + int i; + + switch (stringset) { + case ETH_SS_TEST: + for (i = 0; i < I40E_TEST_LEN; i++) { + memcpy(data, i40e_gstrings_test[i], ETH_GSTRING_LEN); + data += ETH_GSTRING_LEN; + } + break; + case ETH_SS_STATS: + for (i = 0; i < I40E_NETDEV_STATS_LEN; i++) { + snprintf(p, ETH_GSTRING_LEN, "%s", + i40e_gstrings_net_stats[i].stat_string); + p += ETH_GSTRING_LEN; + } + for (i = 0; i < I40E_MISC_STATS_LEN; i++) { + snprintf(p, ETH_GSTRING_LEN, "%s", + i40e_gstrings_misc_stats[i].stat_string); + p += ETH_GSTRING_LEN; + } + for (i = 0; i < vsi->num_queue_pairs; i++) { + snprintf(p, ETH_GSTRING_LEN, "tx-%u.tx_packets", i); + p += ETH_GSTRING_LEN; + snprintf(p, ETH_GSTRING_LEN, "tx-%u.tx_bytes", i); + p += ETH_GSTRING_LEN; + snprintf(p, ETH_GSTRING_LEN, "rx-%u.rx_packets", i); + p += ETH_GSTRING_LEN; + snprintf(p, ETH_GSTRING_LEN, "rx-%u.rx_bytes", i); + p += ETH_GSTRING_LEN; + } + if (vsi != pf->vsi[pf->lan_vsi]) + return; + + if (pf->lan_veb != I40E_NO_VEB) { + for (i = 0; i < I40E_VEB_STATS_LEN; i++) { + snprintf(p, ETH_GSTRING_LEN, "veb.%s", + i40e_gstrings_veb_stats[i].stat_string); + p += ETH_GSTRING_LEN; + } + } + for (i = 0; i < I40E_GLOBAL_STATS_LEN; i++) { + snprintf(p, ETH_GSTRING_LEN, "port.%s", + i40e_gstrings_stats[i].stat_string); + p += ETH_GSTRING_LEN; + } + for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) { + snprintf(p, ETH_GSTRING_LEN, + "port.tx_priority_%u_xon", i); + p += ETH_GSTRING_LEN; + snprintf(p, ETH_GSTRING_LEN, + "port.tx_priority_%u_xoff", i); + p += ETH_GSTRING_LEN; + } + for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) { + snprintf(p, ETH_GSTRING_LEN, + "port.rx_priority_%u_xon", i); + p += ETH_GSTRING_LEN; + snprintf(p, ETH_GSTRING_LEN, + "port.rx_priority_%u_xoff", i); + p += ETH_GSTRING_LEN; + } + for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) { + snprintf(p, ETH_GSTRING_LEN, + "port.rx_priority_%u_xon_2_xoff", i); + p += ETH_GSTRING_LEN; + } + /* BUG_ON(p - data != I40E_STATS_LEN * ETH_GSTRING_LEN); */ + break; + } +} + +static int i40e_get_ts_info(struct net_device *dev, + struct ethtool_ts_info *info) +{ + struct i40e_pf *pf = i40e_netdev_to_pf(dev); + + info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE | + SOF_TIMESTAMPING_RX_SOFTWARE | + SOF_TIMESTAMPING_SOFTWARE | + SOF_TIMESTAMPING_TX_HARDWARE | + SOF_TIMESTAMPING_RX_HARDWARE | + SOF_TIMESTAMPING_RAW_HARDWARE; + + if (pf->ptp_clock) + info->phc_index = ptp_clock_index(pf->ptp_clock); + else + info->phc_index = -1; + + info->tx_types = (1 << HWTSTAMP_TX_OFF) | (1 << HWTSTAMP_TX_ON); + + info->rx_filters = (1 << HWTSTAMP_FILTER_NONE) | + (1 << HWTSTAMP_FILTER_PTP_V1_L4_SYNC) | + (1 << HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ) | + (1 << HWTSTAMP_FILTER_PTP_V2_EVENT) | + (1 << HWTSTAMP_FILTER_PTP_V2_L2_EVENT) | + (1 << HWTSTAMP_FILTER_PTP_V2_L4_EVENT) | + (1 << HWTSTAMP_FILTER_PTP_V2_SYNC) | + (1 << HWTSTAMP_FILTER_PTP_V2_L2_SYNC) | + (1 << HWTSTAMP_FILTER_PTP_V2_L4_SYNC) | + (1 << HWTSTAMP_FILTER_PTP_V2_DELAY_REQ) | + (1 << HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ) | + (1 << HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ); + + return 0; +} + +static int i40e_link_test(struct net_device *netdev, u64 *data) +{ + struct i40e_netdev_priv *np = netdev_priv(netdev); + struct i40e_pf *pf = np->vsi->back; + + netif_info(pf, hw, netdev, "link test\n"); + if (i40e_get_link_status(&pf->hw)) + *data = 0; + else + *data = 1; + + return *data; +} + +static int i40e_reg_test(struct net_device *netdev, u64 *data) +{ + struct i40e_netdev_priv *np = netdev_priv(netdev); + struct i40e_pf *pf = np->vsi->back; + + netif_info(pf, hw, netdev, "register test\n"); + *data = i40e_diag_reg_test(&pf->hw); + + return *data; +} + +static int i40e_eeprom_test(struct net_device *netdev, u64 *data) +{ + struct i40e_netdev_priv *np = netdev_priv(netdev); + struct i40e_pf *pf = np->vsi->back; + + netif_info(pf, hw, netdev, "eeprom test\n"); + *data = i40e_diag_eeprom_test(&pf->hw); + + return *data; +} + +static int i40e_intr_test(struct net_device *netdev, u64 *data) +{ + struct i40e_netdev_priv *np = netdev_priv(netdev); + struct i40e_pf *pf = np->vsi->back; + u16 swc_old = pf->sw_int_count; + + netif_info(pf, hw, netdev, "interrupt test\n"); + wr32(&pf->hw, I40E_PFINT_DYN_CTL0, + (I40E_PFINT_DYN_CTL0_INTENA_MASK | + I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK)); + usleep_range(1000, 2000); + *data = (swc_old == pf->sw_int_count); + + return *data; +} + +static int i40e_loopback_test(struct net_device *netdev, u64 *data) +{ + struct i40e_netdev_priv *np = netdev_priv(netdev); + struct i40e_pf *pf = np->vsi->back; + + netif_info(pf, hw, netdev, "loopback test not implemented\n"); + *data = 0; + + return *data; +} + +static void i40e_diag_test(struct net_device *netdev, + struct ethtool_test *eth_test, u64 *data) +{ + struct i40e_netdev_priv *np = netdev_priv(netdev); + struct i40e_pf *pf = np->vsi->back; + + if (eth_test->flags == ETH_TEST_FL_OFFLINE) { + /* Offline tests */ + netif_info(pf, drv, netdev, "offline testing starting\n"); + + set_bit(__I40E_TESTING, &pf->state); + + /* Link test performed before hardware reset + * so autoneg doesn't interfere with test result + */ + if (i40e_link_test(netdev, &data[I40E_ETH_TEST_LINK])) + eth_test->flags |= ETH_TEST_FL_FAILED; + + if (i40e_eeprom_test(netdev, &data[I40E_ETH_TEST_EEPROM])) + eth_test->flags |= ETH_TEST_FL_FAILED; + + if (i40e_intr_test(netdev, &data[I40E_ETH_TEST_INTR])) + eth_test->flags |= ETH_TEST_FL_FAILED; + + if (i40e_loopback_test(netdev, &data[I40E_ETH_TEST_LOOPBACK])) + eth_test->flags |= ETH_TEST_FL_FAILED; + + /* run reg test last, a reset is required after it */ + if (i40e_reg_test(netdev, &data[I40E_ETH_TEST_REG])) + eth_test->flags |= ETH_TEST_FL_FAILED; + + clear_bit(__I40E_TESTING, &pf->state); + i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED)); + } else { + /* Online tests */ + netif_info(pf, drv, netdev, "online testing starting\n"); + + if (i40e_link_test(netdev, &data[I40E_ETH_TEST_LINK])) + eth_test->flags |= ETH_TEST_FL_FAILED; + + /* Offline only tests, not run in online; pass by default */ + data[I40E_ETH_TEST_REG] = 0; + data[I40E_ETH_TEST_EEPROM] = 0; + data[I40E_ETH_TEST_INTR] = 0; + data[I40E_ETH_TEST_LOOPBACK] = 0; + } + + netif_info(pf, drv, netdev, "testing finished\n"); +} + +static void i40e_get_wol(struct net_device *netdev, + struct ethtool_wolinfo *wol) +{ + struct i40e_netdev_priv *np = netdev_priv(netdev); + struct i40e_pf *pf = np->vsi->back; + struct i40e_hw *hw = &pf->hw; + u16 wol_nvm_bits; + + /* NVM bit on means WoL disabled for the port */ + i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits); + if ((1 << hw->port) & wol_nvm_bits) { + wol->supported = 0; + wol->wolopts = 0; + } else { + wol->supported = WAKE_MAGIC; + wol->wolopts = (pf->wol_en ? WAKE_MAGIC : 0); + } +} + +static int i40e_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol) +{ + struct i40e_netdev_priv *np = netdev_priv(netdev); + struct i40e_pf *pf = np->vsi->back; + struct i40e_hw *hw = &pf->hw; + u16 wol_nvm_bits; + + /* NVM bit on means WoL disabled for the port */ + i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits); + if (((1 << hw->port) & wol_nvm_bits)) + return -EOPNOTSUPP; + + /* only magic packet is supported */ + if (wol->wolopts && (wol->wolopts != WAKE_MAGIC)) + return -EOPNOTSUPP; + + /* is this a new value? */ + if (pf->wol_en != !!wol->wolopts) { + pf->wol_en = !!wol->wolopts; + device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en); + } + + return 0; +} + +static int i40e_nway_reset(struct net_device *netdev) +{ + /* restart autonegotiation */ + struct i40e_netdev_priv *np = netdev_priv(netdev); + struct i40e_pf *pf = np->vsi->back; + struct i40e_hw *hw = &pf->hw; + i40e_status ret = 0; + + ret = i40e_aq_set_link_restart_an(hw, NULL); + if (ret) { + netdev_info(netdev, "link restart failed, aq_err=%d\n", + pf->hw.aq.asq_last_status); + return -EIO; + } + + return 0; +} + +static int i40e_set_phys_id(struct net_device *netdev, + enum ethtool_phys_id_state state) +{ + struct i40e_netdev_priv *np = netdev_priv(netdev); + struct i40e_pf *pf = np->vsi->back; + struct i40e_hw *hw = &pf->hw; + int blink_freq = 2; + + switch (state) { + case ETHTOOL_ID_ACTIVE: + pf->led_status = i40e_led_get(hw); + return blink_freq; + case ETHTOOL_ID_ON: + i40e_led_set(hw, 0xF, false); + break; + case ETHTOOL_ID_OFF: + i40e_led_set(hw, 0x0, false); + break; + case ETHTOOL_ID_INACTIVE: + i40e_led_set(hw, pf->led_status, false); + break; + } + + return 0; +} + +/* NOTE: i40e hardware uses a conversion factor of 2 for Interrupt + * Throttle Rate (ITR) ie. ITR(1) = 2us ITR(10) = 20 us, and also + * 125us (8000 interrupts per second) == ITR(62) + */ + +static int i40e_get_coalesce(struct net_device *netdev, + struct ethtool_coalesce *ec) +{ + struct i40e_netdev_priv *np = netdev_priv(netdev); + struct i40e_vsi *vsi = np->vsi; + + ec->tx_max_coalesced_frames_irq = vsi->work_limit; + ec->rx_max_coalesced_frames_irq = vsi->work_limit; + + if (ITR_IS_DYNAMIC(vsi->rx_itr_setting)) + ec->use_adaptive_rx_coalesce = 1; + + if (ITR_IS_DYNAMIC(vsi->tx_itr_setting)) + ec->use_adaptive_tx_coalesce = 1; + + ec->rx_coalesce_usecs = vsi->rx_itr_setting & ~I40E_ITR_DYNAMIC; + ec->tx_coalesce_usecs = vsi->tx_itr_setting & ~I40E_ITR_DYNAMIC; + + return 0; +} + +static int i40e_set_coalesce(struct net_device *netdev, + struct ethtool_coalesce *ec) +{ + struct i40e_netdev_priv *np = netdev_priv(netdev); + struct i40e_q_vector *q_vector; + struct i40e_vsi *vsi = np->vsi; + struct i40e_pf *pf = vsi->back; + struct i40e_hw *hw = &pf->hw; + u16 vector; + int i; + + if (ec->tx_max_coalesced_frames_irq || ec->rx_max_coalesced_frames_irq) + vsi->work_limit = ec->tx_max_coalesced_frames_irq; + + if ((ec->rx_coalesce_usecs >= (I40E_MIN_ITR << 1)) && + (ec->rx_coalesce_usecs <= (I40E_MAX_ITR << 1))) + vsi->rx_itr_setting = ec->rx_coalesce_usecs; + else + return -EINVAL; + + if ((ec->tx_coalesce_usecs >= (I40E_MIN_ITR << 1)) && + (ec->tx_coalesce_usecs <= (I40E_MAX_ITR << 1))) + vsi->tx_itr_setting = ec->tx_coalesce_usecs; + else + return -EINVAL; + + if (ec->use_adaptive_rx_coalesce) + vsi->rx_itr_setting |= I40E_ITR_DYNAMIC; + else + vsi->rx_itr_setting &= ~I40E_ITR_DYNAMIC; + + if (ec->use_adaptive_tx_coalesce) + vsi->tx_itr_setting |= I40E_ITR_DYNAMIC; + else + vsi->tx_itr_setting &= ~I40E_ITR_DYNAMIC; + + vector = vsi->base_vector; + for (i = 0; i < vsi->num_q_vectors; i++, vector++) { + q_vector = vsi->q_vectors[i]; + q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting); + wr32(hw, I40E_PFINT_ITRN(0, vector - 1), q_vector->rx.itr); + q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting); + wr32(hw, I40E_PFINT_ITRN(1, vector - 1), q_vector->tx.itr); + i40e_flush(hw); + } + + return 0; +} + +/** + * i40e_get_rss_hash_opts - Get RSS hash Input Set for each flow type + * @pf: pointer to the physical function struct + * @cmd: ethtool rxnfc command + * + * Returns Success if the flow is supported, else Invalid Input. + **/ +static int i40e_get_rss_hash_opts(struct i40e_pf *pf, struct ethtool_rxnfc *cmd) +{ + cmd->data = 0; + + /* Report default options for RSS on i40e */ + switch (cmd->flow_type) { + case TCP_V4_FLOW: + case UDP_V4_FLOW: + cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3; + /* fall through to add IP fields */ + case SCTP_V4_FLOW: + case AH_ESP_V4_FLOW: + case AH_V4_FLOW: + case ESP_V4_FLOW: + case IPV4_FLOW: + cmd->data |= RXH_IP_SRC | RXH_IP_DST; + break; + case TCP_V6_FLOW: + case UDP_V6_FLOW: + cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3; + /* fall through to add IP fields */ + case SCTP_V6_FLOW: + case AH_ESP_V6_FLOW: + case AH_V6_FLOW: + case ESP_V6_FLOW: + case IPV6_FLOW: + cmd->data |= RXH_IP_SRC | RXH_IP_DST; + break; + default: + return -EINVAL; + } + + return 0; +} + +/** + * i40e_get_ethtool_fdir_all - Populates the rule count of a command + * @pf: Pointer to the physical function struct + * @cmd: The command to get or set Rx flow classification rules + * @rule_locs: Array of used rule locations + * + * This function populates both the total and actual rule count of + * the ethtool flow classification command + * + * Returns 0 on success or -EMSGSIZE if entry not found + **/ +static int i40e_get_ethtool_fdir_all(struct i40e_pf *pf, + struct ethtool_rxnfc *cmd, + u32 *rule_locs) +{ + struct i40e_fdir_filter *rule; + struct hlist_node *node2; + int cnt = 0; + + /* report total rule count */ + cmd->data = i40e_get_fd_cnt_all(pf); + + hlist_for_each_entry_safe(rule, node2, + &pf->fdir_filter_list, fdir_node) { + if (cnt == cmd->rule_cnt) + return -EMSGSIZE; + + rule_locs[cnt] = rule->fd_id; + cnt++; + } + + cmd->rule_cnt = cnt; + + return 0; +} + +/** + * i40e_get_ethtool_fdir_entry - Look up a filter based on Rx flow + * @pf: Pointer to the physical function struct + * @cmd: The command to get or set Rx flow classification rules + * + * This function looks up a filter based on the Rx flow classification + * command and fills the flow spec info for it if found + * + * Returns 0 on success or -EINVAL if filter not found + **/ +static int i40e_get_ethtool_fdir_entry(struct i40e_pf *pf, + struct ethtool_rxnfc *cmd) +{ + struct ethtool_rx_flow_spec *fsp = + (struct ethtool_rx_flow_spec *)&cmd->fs; + struct i40e_fdir_filter *rule = NULL; + struct hlist_node *node2; + + hlist_for_each_entry_safe(rule, node2, + &pf->fdir_filter_list, fdir_node) { + if (fsp->location <= rule->fd_id) + break; + } + + if (!rule || fsp->location != rule->fd_id) + return -EINVAL; + + fsp->flow_type = rule->flow_type; + if (fsp->flow_type == IP_USER_FLOW) { + fsp->h_u.usr_ip4_spec.ip_ver = ETH_RX_NFC_IP4; + fsp->h_u.usr_ip4_spec.proto = 0; + fsp->m_u.usr_ip4_spec.proto = 0; + } + + /* Reverse the src and dest notion, since the HW views them from + * Tx perspective where as the user expects it from Rx filter view. + */ + fsp->h_u.tcp_ip4_spec.psrc = rule->dst_port; + fsp->h_u.tcp_ip4_spec.pdst = rule->src_port; + fsp->h_u.tcp_ip4_spec.ip4src = rule->dst_ip[0]; + fsp->h_u.tcp_ip4_spec.ip4dst = rule->src_ip[0]; + + if (rule->dest_ctl == I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET) + fsp->ring_cookie = RX_CLS_FLOW_DISC; + else + fsp->ring_cookie = rule->q_index; + + return 0; +} + +/** + * i40e_get_rxnfc - command to get RX flow classification rules + * @netdev: network interface device structure + * @cmd: ethtool rxnfc command + * + * Returns Success if the command is supported. + **/ +static int i40e_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd, + u32 *rule_locs) +{ + struct i40e_netdev_priv *np = netdev_priv(netdev); + struct i40e_vsi *vsi = np->vsi; + struct i40e_pf *pf = vsi->back; + int ret = -EOPNOTSUPP; + + switch (cmd->cmd) { + case ETHTOOL_GRXRINGS: + cmd->data = vsi->alloc_queue_pairs; + ret = 0; + break; + case ETHTOOL_GRXFH: + ret = i40e_get_rss_hash_opts(pf, cmd); + break; + case ETHTOOL_GRXCLSRLCNT: + cmd->rule_cnt = pf->fdir_pf_active_filters; + /* report total rule count */ + cmd->data = i40e_get_fd_cnt_all(pf); + ret = 0; + break; + case ETHTOOL_GRXCLSRULE: + ret = i40e_get_ethtool_fdir_entry(pf, cmd); + break; + case ETHTOOL_GRXCLSRLALL: + ret = i40e_get_ethtool_fdir_all(pf, cmd, rule_locs); + break; + default: + break; + } + + return ret; +} + +/** + * i40e_set_rss_hash_opt - Enable/Disable flow types for RSS hash + * @pf: pointer to the physical function struct + * @cmd: ethtool rxnfc command + * + * Returns Success if the flow input set is supported. + **/ +static int i40e_set_rss_hash_opt(struct i40e_pf *pf, struct ethtool_rxnfc *nfc) +{ + struct i40e_hw *hw = &pf->hw; + u64 hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) | + ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32); + + /* RSS does not support anything other than hashing + * to queues on src and dst IPs and ports + */ + if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST | + RXH_L4_B_0_1 | RXH_L4_B_2_3)) + return -EINVAL; + + /* We need at least the IP SRC and DEST fields for hashing */ + if (!(nfc->data & RXH_IP_SRC) || + !(nfc->data & RXH_IP_DST)) + return -EINVAL; + + switch (nfc->flow_type) { + case TCP_V4_FLOW: + switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) { + case 0: + hena &= ~((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV4_TCP); + break; + case (RXH_L4_B_0_1 | RXH_L4_B_2_3): + hena |= ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV4_TCP); + break; + default: + return -EINVAL; + } + break; + case TCP_V6_FLOW: + switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) { + case 0: + hena &= ~((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV6_TCP); + break; + case (RXH_L4_B_0_1 | RXH_L4_B_2_3): + hena |= ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV6_TCP); + break; + default: + return -EINVAL; + } + break; + case UDP_V4_FLOW: + switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) { + case 0: + hena &= ~(((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV4_UDP) | + ((u64)1 << I40E_FILTER_PCTYPE_FRAG_IPV4)); + break; + case (RXH_L4_B_0_1 | RXH_L4_B_2_3): + hena |= (((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV4_UDP) | + ((u64)1 << I40E_FILTER_PCTYPE_FRAG_IPV4)); + break; + default: + return -EINVAL; + } + break; + case UDP_V6_FLOW: + switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) { + case 0: + hena &= ~(((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV6_UDP) | + ((u64)1 << I40E_FILTER_PCTYPE_FRAG_IPV6)); + break; + case (RXH_L4_B_0_1 | RXH_L4_B_2_3): + hena |= (((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV6_UDP) | + ((u64)1 << I40E_FILTER_PCTYPE_FRAG_IPV6)); + break; + default: + return -EINVAL; + } + break; + case AH_ESP_V4_FLOW: + case AH_V4_FLOW: + case ESP_V4_FLOW: + case SCTP_V4_FLOW: + if ((nfc->data & RXH_L4_B_0_1) || + (nfc->data & RXH_L4_B_2_3)) + return -EINVAL; + hena |= ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV4_OTHER); + break; + case AH_ESP_V6_FLOW: + case AH_V6_FLOW: + case ESP_V6_FLOW: + case SCTP_V6_FLOW: + if ((nfc->data & RXH_L4_B_0_1) || + (nfc->data & RXH_L4_B_2_3)) + return -EINVAL; + hena |= ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV6_OTHER); + break; + case IPV4_FLOW: + hena |= ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV4_OTHER) | + ((u64)1 << I40E_FILTER_PCTYPE_FRAG_IPV4); + break; + case IPV6_FLOW: + hena |= ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV6_OTHER) | + ((u64)1 << I40E_FILTER_PCTYPE_FRAG_IPV6); + break; + default: + return -EINVAL; + } + + wr32(hw, I40E_PFQF_HENA(0), (u32)hena); + wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32)); + i40e_flush(hw); + + return 0; +} + +/** + * i40e_match_fdir_input_set - Match a new filter against an existing one + * @rule: The filter already added + * @input: The new filter to comapre against + * + * Returns true if the two input set match + **/ +static bool i40e_match_fdir_input_set(struct i40e_fdir_filter *rule, + struct i40e_fdir_filter *input) +{ + if ((rule->dst_ip[0] != input->dst_ip[0]) || + (rule->src_ip[0] != input->src_ip[0]) || + (rule->dst_port != input->dst_port) || + (rule->src_port != input->src_port)) + return false; + return true; +} + +/** + * i40e_update_ethtool_fdir_entry - Updates the fdir filter entry + * @vsi: Pointer to the targeted VSI + * @input: The filter to update or NULL to indicate deletion + * @sw_idx: Software index to the filter + * @cmd: The command to get or set Rx flow classification rules + * + * This function updates (or deletes) a Flow Director entry from + * the hlist of the corresponding PF + * + * Returns 0 on success + **/ +static int i40e_update_ethtool_fdir_entry(struct i40e_vsi *vsi, + struct i40e_fdir_filter *input, + u16 sw_idx, + struct ethtool_rxnfc *cmd) +{ + struct i40e_fdir_filter *rule, *parent; + struct i40e_pf *pf = vsi->back; + struct hlist_node *node2; + int err = -EINVAL; + + parent = NULL; + rule = NULL; + + hlist_for_each_entry_safe(rule, node2, + &pf->fdir_filter_list, fdir_node) { + /* hash found, or no matching entry */ + if (rule->fd_id >= sw_idx) + break; + parent = rule; + } + + /* if there is an old rule occupying our place remove it */ + if (rule && (rule->fd_id == sw_idx)) { + if (input && !i40e_match_fdir_input_set(rule, input)) + err = i40e_add_del_fdir(vsi, rule, false); + else if (!input) + err = i40e_add_del_fdir(vsi, rule, false); + hlist_del(&rule->fdir_node); + kfree(rule); + pf->fdir_pf_active_filters--; + } + + /* If no input this was a delete, err should be 0 if a rule was + * successfully found and removed from the list else -EINVAL + */ + if (!input) + return err; + + /* initialize node and set software index */ + INIT_HLIST_NODE(&input->fdir_node); + + /* add filter to the list */ + if (parent) + hlist_add_after(&parent->fdir_node, &input->fdir_node); + else + hlist_add_head(&input->fdir_node, + &pf->fdir_filter_list); + + /* update counts */ + pf->fdir_pf_active_filters++; + + return 0; +} + +/** + * i40e_del_fdir_entry - Deletes a Flow Director filter entry + * @vsi: Pointer to the targeted VSI + * @cmd: The command to get or set Rx flow classification rules + * + * The function removes a Flow Director filter entry from the + * hlist of the corresponding PF + * + * Returns 0 on success + */ +static int i40e_del_fdir_entry(struct i40e_vsi *vsi, + struct ethtool_rxnfc *cmd) +{ + struct ethtool_rx_flow_spec *fsp = + (struct ethtool_rx_flow_spec *)&cmd->fs; + struct i40e_pf *pf = vsi->back; + int ret = 0; + + ret = i40e_update_ethtool_fdir_entry(vsi, NULL, fsp->location, cmd); + + i40e_fdir_check_and_reenable(pf); + return ret; +} + +/** + * i40e_add_fdir_ethtool - Add/Remove Flow Director filters + * @vsi: pointer to the targeted VSI + * @cmd: command to get or set RX flow classification rules + * + * Add Flow Director filters for a specific flow spec based on their + * protocol. Returns 0 if the filters were successfully added. + **/ +static int i40e_add_fdir_ethtool(struct i40e_vsi *vsi, + struct ethtool_rxnfc *cmd) +{ + struct ethtool_rx_flow_spec *fsp; + struct i40e_fdir_filter *input; + struct i40e_pf *pf; + int ret = -EINVAL; + + if (!vsi) + return -EINVAL; + + pf = vsi->back; + + if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED)) + return -EOPNOTSUPP; + + if (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED) + return -ENOSPC; + + fsp = (struct ethtool_rx_flow_spec *)&cmd->fs; + + if (fsp->location >= (pf->hw.func_caps.fd_filters_best_effort + + pf->hw.func_caps.fd_filters_guaranteed)) { + return -EINVAL; + } + + if ((fsp->ring_cookie != RX_CLS_FLOW_DISC) && + (fsp->ring_cookie >= vsi->num_queue_pairs)) + return -EINVAL; + + input = kzalloc(sizeof(*input), GFP_KERNEL); + + if (!input) + return -ENOMEM; + + input->fd_id = fsp->location; + + if (fsp->ring_cookie == RX_CLS_FLOW_DISC) + input->dest_ctl = I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET; + else + input->dest_ctl = + I40E_FILTER_PROGRAM_DESC_DEST_DIRECT_PACKET_QINDEX; + + input->q_index = fsp->ring_cookie; + input->flex_off = 0; + input->pctype = 0; + input->dest_vsi = vsi->id; + input->fd_status = I40E_FILTER_PROGRAM_DESC_FD_STATUS_FD_ID; + input->cnt_index = pf->fd_sb_cnt_idx; + input->flow_type = fsp->flow_type; + input->ip4_proto = fsp->h_u.usr_ip4_spec.proto; + + /* Reverse the src and dest notion, since the HW expects them to be from + * Tx perspective where as the input from user is from Rx filter view. + */ + input->dst_port = fsp->h_u.tcp_ip4_spec.psrc; + input->src_port = fsp->h_u.tcp_ip4_spec.pdst; + input->dst_ip[0] = fsp->h_u.tcp_ip4_spec.ip4src; + input->src_ip[0] = fsp->h_u.tcp_ip4_spec.ip4dst; + + ret = i40e_add_del_fdir(vsi, input, true); + if (ret) + kfree(input); + else + i40e_update_ethtool_fdir_entry(vsi, input, fsp->location, NULL); + + return ret; +} + +/** + * i40e_set_rxnfc - command to set RX flow classification rules + * @netdev: network interface device structure + * @cmd: ethtool rxnfc command + * + * Returns Success if the command is supported. + **/ +static int i40e_set_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd) +{ + struct i40e_netdev_priv *np = netdev_priv(netdev); + struct i40e_vsi *vsi = np->vsi; + struct i40e_pf *pf = vsi->back; + int ret = -EOPNOTSUPP; + + switch (cmd->cmd) { + case ETHTOOL_SRXFH: + ret = i40e_set_rss_hash_opt(pf, cmd); + break; + case ETHTOOL_SRXCLSRLINS: + ret = i40e_add_fdir_ethtool(vsi, cmd); + break; + case ETHTOOL_SRXCLSRLDEL: + ret = i40e_del_fdir_entry(vsi, cmd); + break; + default: + break; + } + + return ret; +} + +/** + * i40e_max_channels - get Max number of combined channels supported + * @vsi: vsi pointer + **/ +static unsigned int i40e_max_channels(struct i40e_vsi *vsi) +{ + /* TODO: This code assumes DCB and FD is disabled for now. */ + return vsi->alloc_queue_pairs; +} + +/** + * i40e_get_channels - Get the current channels enabled and max supported etc. + * @netdev: network interface device structure + * @ch: ethtool channels structure + * + * We don't support separate tx and rx queues as channels. The other count + * represents how many queues are being used for control. max_combined counts + * how many queue pairs we can support. They may not be mapped 1 to 1 with + * q_vectors since we support a lot more queue pairs than q_vectors. + **/ +static void i40e_get_channels(struct net_device *dev, + struct ethtool_channels *ch) +{ + struct i40e_netdev_priv *np = netdev_priv(dev); + struct i40e_vsi *vsi = np->vsi; + struct i40e_pf *pf = vsi->back; + + /* report maximum channels */ + ch->max_combined = i40e_max_channels(vsi); + + /* report info for other vector */ + ch->other_count = (pf->flags & I40E_FLAG_FD_SB_ENABLED) ? 1 : 0; + ch->max_other = ch->other_count; + + /* Note: This code assumes DCB is disabled for now. */ + ch->combined_count = vsi->num_queue_pairs; +} + +/** + * i40e_set_channels - Set the new channels count. + * @netdev: network interface device structure + * @ch: ethtool channels structure + * + * The new channels count may not be the same as requested by the user + * since it gets rounded down to a power of 2 value. + **/ +static int i40e_set_channels(struct net_device *dev, + struct ethtool_channels *ch) +{ + struct i40e_netdev_priv *np = netdev_priv(dev); + unsigned int count = ch->combined_count; + struct i40e_vsi *vsi = np->vsi; + struct i40e_pf *pf = vsi->back; + int new_count; + + /* We do not support setting channels for any other VSI at present */ + if (vsi->type != I40E_VSI_MAIN) + return -EINVAL; + + /* verify they are not requesting separate vectors */ + if (!count || ch->rx_count || ch->tx_count) + return -EINVAL; + + /* verify other_count has not changed */ + if (ch->other_count != ((pf->flags & I40E_FLAG_FD_SB_ENABLED) ? 1 : 0)) + return -EINVAL; + + /* verify the number of channels does not exceed hardware limits */ + if (count > i40e_max_channels(vsi)) + return -EINVAL; + + /* update feature limits from largest to smallest supported values */ + /* TODO: Flow director limit, DCB etc */ + + /* cap RSS limit */ + if (count > pf->rss_size_max) + count = pf->rss_size_max; + + /* use rss_reconfig to rebuild with new queue count and update traffic + * class queue mapping + */ + new_count = i40e_reconfig_rss_queues(pf, count); + if (new_count > 0) + return 0; + else + return -EINVAL; +} + +static const struct ethtool_ops i40e_ethtool_ops = { + .get_settings = i40e_get_settings, + .get_drvinfo = i40e_get_drvinfo, + .get_regs_len = i40e_get_regs_len, + .get_regs = i40e_get_regs, + .nway_reset = i40e_nway_reset, + .get_link = ethtool_op_get_link, + .get_wol = i40e_get_wol, + .set_wol = i40e_set_wol, + .get_eeprom_len = i40e_get_eeprom_len, + .get_eeprom = i40e_get_eeprom, + .get_ringparam = i40e_get_ringparam, + .set_ringparam = i40e_set_ringparam, + .get_pauseparam = i40e_get_pauseparam, + .get_msglevel = i40e_get_msglevel, + .set_msglevel = i40e_set_msglevel, + .get_rxnfc = i40e_get_rxnfc, + .set_rxnfc = i40e_set_rxnfc, + .self_test = i40e_diag_test, + .get_strings = i40e_get_strings, + .set_phys_id = i40e_set_phys_id, + .get_sset_count = i40e_get_sset_count, + .get_ethtool_stats = i40e_get_ethtool_stats, + .get_coalesce = i40e_get_coalesce, + .set_coalesce = i40e_set_coalesce, + .get_channels = i40e_get_channels, + .set_channels = i40e_set_channels, + .get_ts_info = i40e_get_ts_info, +}; + +void i40e_set_ethtool_ops(struct net_device *netdev) +{ + netdev->ethtool_ops = &i40e_ethtool_ops; +} |