231 lines
6.1 KiB
C
231 lines
6.1 KiB
C
/*
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* Copyright (c) 2007 Mellanox Technologies. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <linux/kernel.h>
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#include <linux/ethtool.h>
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#include <linux/netdevice.h>
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#include "ipoib.h"
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struct ipoib_stats {
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char stat_string[ETH_GSTRING_LEN];
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int stat_offset;
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};
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#define IPOIB_NETDEV_STAT(m) { \
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.stat_string = #m, \
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.stat_offset = offsetof(struct rtnl_link_stats64, m) }
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static const struct ipoib_stats ipoib_gstrings_stats[] = {
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IPOIB_NETDEV_STAT(rx_packets),
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IPOIB_NETDEV_STAT(tx_packets),
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IPOIB_NETDEV_STAT(rx_bytes),
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IPOIB_NETDEV_STAT(tx_bytes),
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IPOIB_NETDEV_STAT(tx_errors),
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IPOIB_NETDEV_STAT(rx_dropped),
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IPOIB_NETDEV_STAT(tx_dropped),
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IPOIB_NETDEV_STAT(multicast),
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};
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#define IPOIB_GLOBAL_STATS_LEN ARRAY_SIZE(ipoib_gstrings_stats)
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static void ipoib_get_drvinfo(struct net_device *netdev,
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struct ethtool_drvinfo *drvinfo)
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{
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struct ipoib_dev_priv *priv = ipoib_priv(netdev);
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ib_get_device_fw_str(priv->ca, drvinfo->fw_version);
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strlcpy(drvinfo->bus_info, dev_name(priv->ca->dev.parent),
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sizeof(drvinfo->bus_info));
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strlcpy(drvinfo->version, ipoib_driver_version,
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sizeof(drvinfo->version));
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strlcpy(drvinfo->driver, "ib_ipoib", sizeof(drvinfo->driver));
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}
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static int ipoib_get_coalesce(struct net_device *dev,
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struct ethtool_coalesce *coal)
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{
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struct ipoib_dev_priv *priv = ipoib_priv(dev);
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coal->rx_coalesce_usecs = priv->ethtool.coalesce_usecs;
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coal->rx_max_coalesced_frames = priv->ethtool.max_coalesced_frames;
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return 0;
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}
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static int ipoib_set_coalesce(struct net_device *dev,
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struct ethtool_coalesce *coal)
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{
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struct ipoib_dev_priv *priv = ipoib_priv(dev);
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int ret;
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/*
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* These values are saved in the private data and returned
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* when ipoib_get_coalesce() is called
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*/
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if (coal->rx_coalesce_usecs > 0xffff ||
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coal->rx_max_coalesced_frames > 0xffff)
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return -EINVAL;
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ret = rdma_set_cq_moderation(priv->recv_cq,
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coal->rx_max_coalesced_frames,
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coal->rx_coalesce_usecs);
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if (ret && ret != -EOPNOTSUPP) {
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ipoib_warn(priv, "failed modifying CQ (%d)\n", ret);
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return ret;
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}
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priv->ethtool.coalesce_usecs = coal->rx_coalesce_usecs;
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priv->ethtool.max_coalesced_frames = coal->rx_max_coalesced_frames;
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return 0;
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}
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static void ipoib_get_ethtool_stats(struct net_device *dev,
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struct ethtool_stats __always_unused *stats,
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u64 *data)
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{
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int i;
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struct net_device_stats *net_stats = &dev->stats;
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u8 *p = (u8 *)net_stats;
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for (i = 0; i < IPOIB_GLOBAL_STATS_LEN; i++)
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data[i] = *(u64 *)(p + ipoib_gstrings_stats[i].stat_offset);
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}
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static void ipoib_get_strings(struct net_device __always_unused *dev,
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u32 stringset, u8 *data)
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{
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u8 *p = data;
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int i;
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switch (stringset) {
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case ETH_SS_STATS:
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for (i = 0; i < IPOIB_GLOBAL_STATS_LEN; i++) {
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memcpy(p, ipoib_gstrings_stats[i].stat_string,
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ETH_GSTRING_LEN);
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p += ETH_GSTRING_LEN;
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}
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break;
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case ETH_SS_TEST:
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default:
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break;
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}
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}
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static int ipoib_get_sset_count(struct net_device __always_unused *dev,
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int sset)
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{
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switch (sset) {
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case ETH_SS_STATS:
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return IPOIB_GLOBAL_STATS_LEN;
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case ETH_SS_TEST:
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default:
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break;
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}
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return -EOPNOTSUPP;
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}
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/* Return lane speed in unit of 1e6 bit/sec */
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static inline int ib_speed_enum_to_int(int speed)
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{
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switch (speed) {
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case IB_SPEED_SDR:
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return SPEED_2500;
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case IB_SPEED_DDR:
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return SPEED_5000;
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case IB_SPEED_QDR:
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case IB_SPEED_FDR10:
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return SPEED_10000;
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case IB_SPEED_FDR:
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return SPEED_14000;
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case IB_SPEED_EDR:
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return SPEED_25000;
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}
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return SPEED_UNKNOWN;
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}
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static int ipoib_get_link_ksettings(struct net_device *netdev,
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struct ethtool_link_ksettings *cmd)
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{
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struct ipoib_dev_priv *priv = ipoib_priv(netdev);
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struct ib_port_attr attr;
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int ret, speed, width;
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if (!netif_carrier_ok(netdev)) {
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cmd->base.speed = SPEED_UNKNOWN;
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cmd->base.duplex = DUPLEX_UNKNOWN;
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return 0;
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}
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ret = ib_query_port(priv->ca, priv->port, &attr);
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if (ret < 0)
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return -EINVAL;
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speed = ib_speed_enum_to_int(attr.active_speed);
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width = ib_width_enum_to_int(attr.active_width);
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if (speed < 0 || width < 0)
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return -EINVAL;
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/* Except the following are set, the other members of
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* the struct ethtool_link_settings are initialized to
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* zero in the function __ethtool_get_link_ksettings.
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*/
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cmd->base.speed = speed * width;
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cmd->base.duplex = DUPLEX_FULL;
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cmd->base.phy_address = 0xFF;
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cmd->base.autoneg = AUTONEG_ENABLE;
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cmd->base.port = PORT_OTHER;
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return 0;
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}
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static const struct ethtool_ops ipoib_ethtool_ops = {
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.get_link_ksettings = ipoib_get_link_ksettings,
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.get_drvinfo = ipoib_get_drvinfo,
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.get_coalesce = ipoib_get_coalesce,
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.set_coalesce = ipoib_set_coalesce,
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.get_strings = ipoib_get_strings,
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.get_ethtool_stats = ipoib_get_ethtool_stats,
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.get_sset_count = ipoib_get_sset_count,
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};
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void ipoib_set_ethtool_ops(struct net_device *dev)
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{
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dev->ethtool_ops = &ipoib_ethtool_ops;
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}
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