| /******************************************************************************* |
| * |
| * Intel Ethernet Controller XL710 Family Linux Virtual Function Driver |
| * Copyright(c) 2013 - 2016 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) |
| { |
| struct i40evf_adapter *adapter = netdev_priv(netdev); |
| |
| ecmd->supported = 0; |
| ecmd->autoneg = AUTONEG_DISABLE; |
| ecmd->transceiver = XCVR_DUMMY1; |
| ecmd->port = PORT_NONE; |
| /* Set speed and duplex */ |
| switch (adapter->link_speed) { |
| case I40E_LINK_SPEED_40GB: |
| ethtool_cmd_speed_set(ecmd, SPEED_40000); |
| break; |
| case I40E_LINK_SPEED_20GB: |
| ethtool_cmd_speed_set(ecmd, SPEED_20000); |
| break; |
| case I40E_LINK_SPEED_10GB: |
| ethtool_cmd_speed_set(ecmd, SPEED_10000); |
| break; |
| case I40E_LINK_SPEED_1GB: |
| ethtool_cmd_speed_set(ecmd, SPEED_1000); |
| break; |
| case I40E_LINK_SPEED_100MB: |
| ethtool_cmd_speed_set(ecmd, SPEED_100); |
| break; |
| default: |
| break; |
| } |
| ecmd->duplex = DUPLEX_FULL; |
| |
| 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)) { |
| adapter->flags |= I40EVF_FLAG_RESET_NEEDED; |
| schedule_work(&adapter->reset_task); |
| } |
| |
| 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_vectors[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; |
| } |
| |
| /** |
| * 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: |
| netdev_info(netdev, |
| "RSS hash info is not available to vf, use pf.\n"); |
| 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_key_size - get the RSS hash key size |
| * @netdev: network interface device structure |
| * |
| * Returns the table size. |
| **/ |
| static u32 i40evf_get_rxfh_key_size(struct net_device *netdev) |
| { |
| struct i40evf_adapter *adapter = netdev_priv(netdev); |
| |
| return adapter->rss_key_size; |
| } |
| |
| /** |
| * 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) |
| { |
| struct i40evf_adapter *adapter = netdev_priv(netdev); |
| |
| return adapter->rss_lut_size; |
| } |
| |
| /** |
| * 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); |
| u16 i; |
| |
| if (hfunc) |
| *hfunc = ETH_RSS_HASH_TOP; |
| if (!indir) |
| return 0; |
| |
| memcpy(key, adapter->rss_key, adapter->rss_key_size); |
| |
| /* Each 32 bits pointed by 'indir' is stored with a lut entry */ |
| for (i = 0; i < adapter->rss_lut_size; i++) |
| indir[i] = (u32)adapter->rss_lut[i]; |
| |
| 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); |
| u16 i; |
| |
| /* 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; |
| |
| if (key) { |
| memcpy(adapter->rss_key, key, adapter->rss_key_size); |
| } |
| |
| /* Each 32 bits pointed by 'indir' is stored with a lut entry */ |
| for (i = 0; i < adapter->rss_lut_size; i++) |
| adapter->rss_lut[i] = (u8)(indir[i]); |
| |
| return i40evf_config_rss(adapter); |
| } |
| |
| 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, |
| .get_rxfh_indir_size = i40evf_get_rxfh_indir_size, |
| .get_rxfh = i40evf_get_rxfh, |
| .set_rxfh = i40evf_set_rxfh, |
| .get_channels = i40evf_get_channels, |
| .get_rxfh_key_size = i40evf_get_rxfh_key_size, |
| }; |
| |
| /** |
| * 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; |
| } |