diff options
Diffstat (limited to 'drivers/net/ethernet/intel/i40evf/i40evf_ethtool.c')
| -rw-r--r-- | drivers/net/ethernet/intel/i40evf/i40evf_ethtool.c | 390 |
1 files changed, 390 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 000000000000..b0b1f4bf5ac0 --- /dev/null +++ b/drivers/net/ethernet/intel/i40evf/i40evf_ethtool.c @@ -0,0 +1,390 @@ +/******************************************************************************* + * + * 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); +} |