diff options
Diffstat (limited to 'drivers/net/ethernet/intel/i40evf/i40evf_ethtool.c')
| -rw-r--r-- | drivers/net/ethernet/intel/i40evf/i40evf_ethtool.c | 722 |
1 files changed, 722 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/i40evf/i40evf_ethtool.c b/drivers/net/ethernet/intel/i40evf/i40evf_ethtool.c new file mode 100644 index 000000000..f4e77665b --- /dev/null +++ b/drivers/net/ethernet/intel/i40evf/i40evf_ethtool.c @@ -0,0 +1,722 @@ +/******************************************************************************* + * + * Intel Ethernet Controller XL710 Family Linux Virtual Function Driver + * Copyright(c) 2013 - 2015 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 i40evf */ +#include "i40evf.h" + +#include <linux/uaccess.h> + +struct i40evf_stats { + char stat_string[ETH_GSTRING_LEN]; + int stat_offset; +}; + +#define I40EVF_STAT(_name, _stat) { \ + .stat_string = _name, \ + .stat_offset = offsetof(struct i40evf_adapter, _stat) \ +} + +/* All stats are u64, so we don't need to track the size of the field. */ +static const struct i40evf_stats i40evf_gstrings_stats[] = { + I40EVF_STAT("rx_bytes", current_stats.rx_bytes), + I40EVF_STAT("rx_unicast", current_stats.rx_unicast), + I40EVF_STAT("rx_multicast", current_stats.rx_multicast), + I40EVF_STAT("rx_broadcast", current_stats.rx_broadcast), + I40EVF_STAT("rx_discards", current_stats.rx_discards), + I40EVF_STAT("rx_unknown_protocol", current_stats.rx_unknown_protocol), + I40EVF_STAT("tx_bytes", current_stats.tx_bytes), + I40EVF_STAT("tx_unicast", current_stats.tx_unicast), + I40EVF_STAT("tx_multicast", current_stats.tx_multicast), + I40EVF_STAT("tx_broadcast", current_stats.tx_broadcast), + I40EVF_STAT("tx_discards", current_stats.tx_discards), + I40EVF_STAT("tx_errors", current_stats.tx_errors), +}; + +#define I40EVF_GLOBAL_STATS_LEN ARRAY_SIZE(i40evf_gstrings_stats) +#define I40EVF_QUEUE_STATS_LEN(_dev) \ + (((struct i40evf_adapter *)\ + netdev_priv(_dev))->num_active_queues \ + * 2 * (sizeof(struct i40e_queue_stats) / sizeof(u64))) +#define I40EVF_STATS_LEN(_dev) \ + (I40EVF_GLOBAL_STATS_LEN + I40EVF_QUEUE_STATS_LEN(_dev)) + +/** + * i40evf_get_settings - Get Link Speed and Duplex settings + * @netdev: network interface device structure + * @ecmd: ethtool command + * + * Reports speed/duplex settings. Because this is a VF, we don't know what + * kind of link we really have, so we fake it. + **/ +static int i40evf_get_settings(struct net_device *netdev, + struct ethtool_cmd *ecmd) +{ + /* In the future the VF will be able to query the PF for + * some information - for now use a dummy value + */ + ecmd->supported = 0; + ecmd->autoneg = AUTONEG_DISABLE; + ecmd->transceiver = XCVR_DUMMY1; + ecmd->port = PORT_NONE; + + return 0; +} + +/** + * i40evf_get_sset_count - Get length of string set + * @netdev: network interface device structure + * @sset: id of string set + * + * Reports size of string table. This driver only supports + * strings for statistics. + **/ +static int i40evf_get_sset_count(struct net_device *netdev, int sset) +{ + if (sset == ETH_SS_STATS) + return I40EVF_STATS_LEN(netdev); + else + return -EINVAL; +} + +/** + * i40evf_get_ethtool_stats - report device statistics + * @netdev: network interface device structure + * @stats: ethtool statistics structure + * @data: pointer to data buffer + * + * All statistics are added to the data buffer as an array of u64. + **/ +static void i40evf_get_ethtool_stats(struct net_device *netdev, + struct ethtool_stats *stats, u64 *data) +{ + struct i40evf_adapter *adapter = netdev_priv(netdev); + int i, j; + char *p; + + for (i = 0; i < I40EVF_GLOBAL_STATS_LEN; i++) { + p = (char *)adapter + i40evf_gstrings_stats[i].stat_offset; + data[i] = *(u64 *)p; + } + for (j = 0; j < adapter->num_active_queues; j++) { + data[i++] = adapter->tx_rings[j]->stats.packets; + data[i++] = adapter->tx_rings[j]->stats.bytes; + } + for (j = 0; j < adapter->num_active_queues; j++) { + data[i++] = adapter->rx_rings[j]->stats.packets; + data[i++] = adapter->rx_rings[j]->stats.bytes; + } +} + +/** + * i40evf_get_strings - Get string set + * @netdev: network interface device structure + * @sset: id of string set + * @data: buffer for string data + * + * Builds stats string table. + **/ +static void i40evf_get_strings(struct net_device *netdev, u32 sset, u8 *data) +{ + struct i40evf_adapter *adapter = netdev_priv(netdev); + u8 *p = data; + int i; + + if (sset == ETH_SS_STATS) { + for (i = 0; i < I40EVF_GLOBAL_STATS_LEN; i++) { + memcpy(p, i40evf_gstrings_stats[i].stat_string, + ETH_GSTRING_LEN); + p += ETH_GSTRING_LEN; + } + for (i = 0; i < adapter->num_active_queues; i++) { + snprintf(p, ETH_GSTRING_LEN, "tx-%u.packets", i); + p += ETH_GSTRING_LEN; + snprintf(p, ETH_GSTRING_LEN, "tx-%u.bytes", i); + p += ETH_GSTRING_LEN; + } + for (i = 0; i < adapter->num_active_queues; i++) { + snprintf(p, ETH_GSTRING_LEN, "rx-%u.packets", i); + p += ETH_GSTRING_LEN; + snprintf(p, ETH_GSTRING_LEN, "rx-%u.bytes", i); + p += ETH_GSTRING_LEN; + } + } +} + +/** + * i40evf_get_msglevel - Get debug message level + * @netdev: network interface device structure + * + * Returns current debug message level. + **/ +static u32 i40evf_get_msglevel(struct net_device *netdev) +{ + struct i40evf_adapter *adapter = netdev_priv(netdev); + + return adapter->msg_enable; +} + +/** + * i40evf_set_msglevel - Set debug message level + * @netdev: network interface device structure + * @data: message level + * + * Set current debug message level. Higher values cause the driver to + * be noisier. + **/ +static void i40evf_set_msglevel(struct net_device *netdev, u32 data) +{ + struct i40evf_adapter *adapter = netdev_priv(netdev); + + if (I40E_DEBUG_USER & data) + adapter->hw.debug_mask = data; + adapter->msg_enable = data; +} + +/** + * i40evf_get_drvinfo - Get driver info + * @netdev: network interface device structure + * @drvinfo: ethool driver info structure + * + * Returns information about the driver and device for display to the user. + **/ +static void i40evf_get_drvinfo(struct net_device *netdev, + struct ethtool_drvinfo *drvinfo) +{ + struct i40evf_adapter *adapter = netdev_priv(netdev); + + strlcpy(drvinfo->driver, i40evf_driver_name, 32); + strlcpy(drvinfo->version, i40evf_driver_version, 32); + strlcpy(drvinfo->fw_version, "N/A", 4); + strlcpy(drvinfo->bus_info, pci_name(adapter->pdev), 32); +} + +/** + * i40evf_get_ringparam - Get ring parameters + * @netdev: network interface device structure + * @ring: ethtool ringparam structure + * + * Returns current ring parameters. TX and RX rings are reported separately, + * but the number of rings is not reported. + **/ +static void i40evf_get_ringparam(struct net_device *netdev, + struct ethtool_ringparam *ring) +{ + struct i40evf_adapter *adapter = netdev_priv(netdev); + + ring->rx_max_pending = I40EVF_MAX_RXD; + ring->tx_max_pending = I40EVF_MAX_TXD; + ring->rx_pending = adapter->rx_desc_count; + ring->tx_pending = adapter->tx_desc_count; +} + +/** + * i40evf_set_ringparam - Set ring parameters + * @netdev: network interface device structure + * @ring: ethtool ringparam structure + * + * Sets ring parameters. TX and RX rings are controlled separately, but the + * number of rings is not specified, so all rings get the same settings. + **/ +static int i40evf_set_ringparam(struct net_device *netdev, + struct ethtool_ringparam *ring) +{ + struct i40evf_adapter *adapter = netdev_priv(netdev); + u32 new_rx_count, new_tx_count; + + if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending)) + return -EINVAL; + + new_tx_count = clamp_t(u32, ring->tx_pending, + I40EVF_MIN_TXD, + I40EVF_MAX_TXD); + new_tx_count = ALIGN(new_tx_count, I40EVF_REQ_DESCRIPTOR_MULTIPLE); + + new_rx_count = clamp_t(u32, ring->rx_pending, + I40EVF_MIN_RXD, + I40EVF_MAX_RXD); + new_rx_count = ALIGN(new_rx_count, I40EVF_REQ_DESCRIPTOR_MULTIPLE); + + /* if nothing to do return success */ + if ((new_tx_count == adapter->tx_desc_count) && + (new_rx_count == adapter->rx_desc_count)) + return 0; + + adapter->tx_desc_count = new_tx_count; + adapter->rx_desc_count = new_rx_count; + + if (netif_running(netdev)) + i40evf_reinit_locked(adapter); + + return 0; +} + +/** + * i40evf_get_coalesce - Get interrupt coalescing settings + * @netdev: network interface device structure + * @ec: ethtool coalesce structure + * + * Returns current coalescing settings. This is referred to elsewhere in the + * driver as Interrupt Throttle Rate, as this is how the hardware describes + * this functionality. + **/ +static int i40evf_get_coalesce(struct net_device *netdev, + struct ethtool_coalesce *ec) +{ + struct i40evf_adapter *adapter = netdev_priv(netdev); + struct i40e_vsi *vsi = &adapter->vsi; + + ec->tx_max_coalesced_frames = vsi->work_limit; + ec->rx_max_coalesced_frames = 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; +} + +/** + * i40evf_set_coalesce - Set interrupt coalescing settings + * @netdev: network interface device structure + * @ec: ethtool coalesce structure + * + * Change current coalescing settings. + **/ +static int i40evf_set_coalesce(struct net_device *netdev, + struct ethtool_coalesce *ec) +{ + struct i40evf_adapter *adapter = netdev_priv(netdev); + struct i40e_hw *hw = &adapter->hw; + struct i40e_vsi *vsi = &adapter->vsi; + struct i40e_q_vector *q_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 if (ec->use_adaptive_tx_coalesce) + vsi->tx_itr_setting = (I40E_ITR_DYNAMIC | + ITR_REG_TO_USEC(I40E_ITR_RX_DEF)); + 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; + + for (i = 0; i < adapter->num_msix_vectors - NONQ_VECS; i++) { + q_vector = adapter->q_vector[i]; + q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting); + wr32(hw, I40E_VFINT_ITRN1(0, i), q_vector->rx.itr); + q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting); + wr32(hw, I40E_VFINT_ITRN1(1, i), q_vector->tx.itr); + i40e_flush(hw); + } + + return 0; +} + +/** + * i40e_get_rss_hash_opts - Get RSS hash Input Set for each flow type + * @adapter: board private structure + * @cmd: ethtool rxnfc command + * + * Returns Success if the flow is supported, else Invalid Input. + **/ +static int i40evf_get_rss_hash_opts(struct i40evf_adapter *adapter, + struct ethtool_rxnfc *cmd) +{ + struct i40e_hw *hw = &adapter->hw; + u64 hena = (u64)rd32(hw, I40E_VFQF_HENA(0)) | + ((u64)rd32(hw, I40E_VFQF_HENA(1)) << 32); + + /* We always hash on IP src and dest addresses */ + cmd->data = RXH_IP_SRC | RXH_IP_DST; + + switch (cmd->flow_type) { + case TCP_V4_FLOW: + if (hena & ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV4_TCP)) + cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3; + break; + case UDP_V4_FLOW: + if (hena & ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV4_UDP)) + cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3; + break; + + case SCTP_V4_FLOW: + case AH_ESP_V4_FLOW: + case AH_V4_FLOW: + case ESP_V4_FLOW: + case IPV4_FLOW: + break; + + case TCP_V6_FLOW: + if (hena & ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV6_TCP)) + cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3; + break; + case UDP_V6_FLOW: + if (hena & ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV6_UDP)) + cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3; + break; + + case SCTP_V6_FLOW: + case AH_ESP_V6_FLOW: + case AH_V6_FLOW: + case ESP_V6_FLOW: + case IPV6_FLOW: + break; + default: + cmd->data = 0; + return -EINVAL; + } + + return 0; +} + +/** + * i40evf_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 i40evf_get_rxnfc(struct net_device *netdev, + struct ethtool_rxnfc *cmd, + u32 *rule_locs) +{ + struct i40evf_adapter *adapter = netdev_priv(netdev); + int ret = -EOPNOTSUPP; + + switch (cmd->cmd) { + case ETHTOOL_GRXRINGS: + cmd->data = adapter->num_active_queues; + ret = 0; + break; + case ETHTOOL_GRXFH: + ret = i40evf_get_rss_hash_opts(adapter, cmd); + break; + default: + break; + } + + return ret; +} + +/** + * i40evf_set_rss_hash_opt - Enable/Disable flow types for RSS hash + * @adapter: board private structure + * @cmd: ethtool rxnfc command + * + * Returns Success if the flow input set is supported. + **/ +static int i40evf_set_rss_hash_opt(struct i40evf_adapter *adapter, + struct ethtool_rxnfc *nfc) +{ + struct i40e_hw *hw = &adapter->hw; + + u64 hena = (u64)rd32(hw, I40E_VFQF_HENA(0)) | + ((u64)rd32(hw, I40E_VFQF_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_VFQF_HENA(0), (u32)hena); + wr32(hw, I40E_VFQF_HENA(1), (u32)(hena >> 32)); + i40e_flush(hw); + + return 0; +} + +/** + * i40evf_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 i40evf_set_rxnfc(struct net_device *netdev, + struct ethtool_rxnfc *cmd) +{ + struct i40evf_adapter *adapter = netdev_priv(netdev); + int ret = -EOPNOTSUPP; + + switch (cmd->cmd) { + case ETHTOOL_SRXFH: + ret = i40evf_set_rss_hash_opt(adapter, cmd); + break; + default: + break; + } + + return ret; +} + +/** + * i40evf_get_channels: get the number of channels supported by the device + * @netdev: network interface device structure + * @ch: channel information structure + * + * For the purposes of our device, we only use combined channels, i.e. a tx/rx + * queue pair. Report one extra channel to match our "other" MSI-X vector. + **/ +static void i40evf_get_channels(struct net_device *netdev, + struct ethtool_channels *ch) +{ + struct i40evf_adapter *adapter = netdev_priv(netdev); + + /* Report maximum channels */ + ch->max_combined = adapter->num_active_queues; + + ch->max_other = NONQ_VECS; + ch->other_count = NONQ_VECS; + + ch->combined_count = adapter->num_active_queues; +} + +/** + * i40evf_get_rxfh_indir_size - get the rx flow hash indirection table size + * @netdev: network interface device structure + * + * Returns the table size. + **/ +static u32 i40evf_get_rxfh_indir_size(struct net_device *netdev) +{ + return (I40E_VFQF_HLUT_MAX_INDEX + 1) * 4; +} + +/** + * i40evf_get_rxfh - get the rx flow hash indirection table + * @netdev: network interface device structure + * @indir: indirection table + * @key: hash key + * + * Reads the indirection table directly from the hardware. Always returns 0. + **/ +static int i40evf_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key, + u8 *hfunc) +{ + struct i40evf_adapter *adapter = netdev_priv(netdev); + struct i40e_hw *hw = &adapter->hw; + u32 hlut_val; + int i, j; + + if (hfunc) + *hfunc = ETH_RSS_HASH_TOP; + if (!indir) + return 0; + + if (indir) { + for (i = 0, j = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++) { + hlut_val = rd32(hw, I40E_VFQF_HLUT(i)); + indir[j++] = hlut_val & 0xff; + indir[j++] = (hlut_val >> 8) & 0xff; + indir[j++] = (hlut_val >> 16) & 0xff; + indir[j++] = (hlut_val >> 24) & 0xff; + } + } + return 0; +} + +/** + * i40evf_set_rxfh - set the rx flow hash indirection table + * @netdev: network interface device structure + * @indir: indirection table + * @key: hash key + * + * Returns -EINVAL if the table specifies an inavlid queue id, otherwise + * returns 0 after programming the table. + **/ +static int i40evf_set_rxfh(struct net_device *netdev, const u32 *indir, + const u8 *key, const u8 hfunc) +{ + struct i40evf_adapter *adapter = netdev_priv(netdev); + struct i40e_hw *hw = &adapter->hw; + u32 hlut_val; + int i, j; + + /* We do not allow change in unsupported parameters */ + if (key || + (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP)) + return -EOPNOTSUPP; + if (!indir) + return 0; + + for (i = 0, j = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++) { + hlut_val = indir[j++]; + hlut_val |= indir[j++] << 8; + hlut_val |= indir[j++] << 16; + hlut_val |= indir[j++] << 24; + wr32(hw, I40E_VFQF_HLUT(i), hlut_val); + } + + return 0; +} + +static const struct ethtool_ops i40evf_ethtool_ops = { + .get_settings = i40evf_get_settings, + .get_drvinfo = i40evf_get_drvinfo, + .get_link = ethtool_op_get_link, + .get_ringparam = i40evf_get_ringparam, + .set_ringparam = i40evf_set_ringparam, + .get_strings = i40evf_get_strings, + .get_ethtool_stats = i40evf_get_ethtool_stats, + .get_sset_count = i40evf_get_sset_count, + .get_msglevel = i40evf_get_msglevel, + .set_msglevel = i40evf_set_msglevel, + .get_coalesce = i40evf_get_coalesce, + .set_coalesce = i40evf_set_coalesce, + .get_rxnfc = i40evf_get_rxnfc, + .set_rxnfc = i40evf_set_rxnfc, + .get_rxfh_indir_size = i40evf_get_rxfh_indir_size, + .get_rxfh = i40evf_get_rxfh, + .set_rxfh = i40evf_set_rxfh, + .get_channels = i40evf_get_channels, +}; + +/** + * i40evf_set_ethtool_ops - Initialize ethtool ops struct + * @netdev: network interface device structure + * + * Sets ethtool ops struct in our netdev so that ethtool can call + * our functions. + **/ +void i40evf_set_ethtool_ops(struct net_device *netdev) +{ + netdev->ethtool_ops = &i40evf_ethtool_ops; +} |