| /******************************************************************************* |
| * |
| * Intel Ethernet Controller XL710 Family Linux Virtual Function Driver |
| * Copyright(c) 2013 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. |
| * |
| * 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_errors", current_stats.rx_errors), |
| I40EVF_STAT("rx_missed", current_stats.rx_missed), |
| 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 \ |
| (((struct i40evf_adapter *) \ |
| netdev_priv(netdev))->vsi_res->num_queue_pairs * 4) |
| #define I40EVF_STATS_LEN (I40EVF_GLOBAL_STATS_LEN + I40EVF_QUEUE_STATS_LEN) |
| |
| /** |
| * 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 = SUPPORTED_10000baseT_Full; |
| 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; |
| else |
| return -ENOTSUPP; |
| } |
| |
| /** |
| * 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->vsi_res->num_queue_pairs; j++) { |
| data[i++] = adapter->tx_rings[j]->stats.packets; |
| data[i++] = adapter->tx_rings[j]->stats.bytes; |
| } |
| for (j = 0; j < adapter->vsi_res->num_queue_pairs; 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->vsi_res->num_queue_pairs; 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->vsi_res->num_queue_pairs; 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_get_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); |
| adapter->msg_enable = data; |
| } |
| |
| /** |
| * i40evf_get_drvinto - 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->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); |
| struct i40e_ring *tx_ring = adapter->tx_rings[0]; |
| struct i40e_ring *rx_ring = adapter->rx_rings[0]; |
| |
| ring->rx_max_pending = I40EVF_MAX_RXD; |
| ring->tx_max_pending = I40EVF_MAX_TXD; |
| ring->rx_pending = rx_ring->count; |
| ring->tx_pending = tx_ring->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->txd_count) && |
| (new_rx_count == adapter->rxd_count)) |
| return 0; |
| |
| adapter->txd_count = new_tx_count; |
| adapter->rxd_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->rx_coalesce_usecs = 1; |
| else |
| ec->rx_coalesce_usecs = vsi->rx_itr_setting; |
| |
| if (ITR_IS_DYNAMIC(vsi->tx_itr_setting)) |
| ec->tx_coalesce_usecs = 1; |
| else |
| ec->tx_coalesce_usecs = vsi->tx_itr_setting; |
| |
| 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 || ec->rx_max_coalesced_frames) |
| vsi->work_limit = ec->tx_max_coalesced_frames; |
| |
| switch (ec->rx_coalesce_usecs) { |
| case 0: |
| vsi->rx_itr_setting = 0; |
| break; |
| case 1: |
| vsi->rx_itr_setting = (I40E_ITR_DYNAMIC |
| | ITR_REG_TO_USEC(I40E_ITR_RX_DEF)); |
| break; |
| default: |
| if ((ec->rx_coalesce_usecs < (I40E_MIN_ITR << 1)) || |
| (ec->rx_coalesce_usecs > (I40E_MAX_ITR << 1))) |
| return -EINVAL; |
| vsi->rx_itr_setting = ec->rx_coalesce_usecs; |
| break; |
| } |
| |
| switch (ec->tx_coalesce_usecs) { |
| case 0: |
| vsi->tx_itr_setting = 0; |
| break; |
| case 1: |
| vsi->tx_itr_setting = (I40E_ITR_DYNAMIC |
| | ITR_REG_TO_USEC(I40E_ITR_TX_DEF)); |
| break; |
| default: |
| if ((ec->tx_coalesce_usecs < (I40E_MIN_ITR << 1)) || |
| (ec->tx_coalesce_usecs > (I40E_MAX_ITR << 1))) |
| return -EINVAL; |
| vsi->tx_itr_setting = ec->tx_coalesce_usecs; |
| break; |
| } |
| |
| 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; |
| } |
| |
| static 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, |
| }; |
| |
| /** |
| * 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) |
| { |
| SET_ETHTOOL_OPS(netdev, &i40evf_ethtool_ops); |
| } |