linux-stable/drivers/infiniband/ulp/ipoib/ipoib_ethtool.c
Meir Lichtinger 235b6ac306 RDMA/ipoib: Add 50Gb and 100Gb link speeds to ethtool
The IBTA specification has new speeds - HDR and NDR, supporting signaling
rate of 50Gb and 100Gb respectively. ethtool support of ipoib driver
translates IB speed to signaling rate. Added translation of HDR and NDR IB
types to rates of 50Gb and 100Gb ethernet speed.

Link: https://lore.kernel.org/r/20201026132904.1338526-1-leon@kernel.org
Signed-off-by: Meir Lichtinger <meirl@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2020-11-02 15:48:56 -04:00

232 lines
6.2 KiB
C

/*
* Copyright (c) 2007 Mellanox Technologies. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <linux/kernel.h>
#include <linux/ethtool.h>
#include <linux/netdevice.h>
#include "ipoib.h"
struct ipoib_stats {
char stat_string[ETH_GSTRING_LEN];
int stat_offset;
};
#define IPOIB_NETDEV_STAT(m) { \
.stat_string = #m, \
.stat_offset = offsetof(struct rtnl_link_stats64, m) }
static const struct ipoib_stats ipoib_gstrings_stats[] = {
IPOIB_NETDEV_STAT(rx_packets),
IPOIB_NETDEV_STAT(tx_packets),
IPOIB_NETDEV_STAT(rx_bytes),
IPOIB_NETDEV_STAT(tx_bytes),
IPOIB_NETDEV_STAT(tx_errors),
IPOIB_NETDEV_STAT(rx_dropped),
IPOIB_NETDEV_STAT(tx_dropped),
IPOIB_NETDEV_STAT(multicast),
};
#define IPOIB_GLOBAL_STATS_LEN ARRAY_SIZE(ipoib_gstrings_stats)
static void ipoib_get_drvinfo(struct net_device *netdev,
struct ethtool_drvinfo *drvinfo)
{
struct ipoib_dev_priv *priv = ipoib_priv(netdev);
ib_get_device_fw_str(priv->ca, drvinfo->fw_version);
strlcpy(drvinfo->bus_info, dev_name(priv->ca->dev.parent),
sizeof(drvinfo->bus_info));
strlcpy(drvinfo->driver, "ib_ipoib", sizeof(drvinfo->driver));
}
static int ipoib_get_coalesce(struct net_device *dev,
struct ethtool_coalesce *coal)
{
struct ipoib_dev_priv *priv = ipoib_priv(dev);
coal->rx_coalesce_usecs = priv->ethtool.coalesce_usecs;
coal->rx_max_coalesced_frames = priv->ethtool.max_coalesced_frames;
return 0;
}
static int ipoib_set_coalesce(struct net_device *dev,
struct ethtool_coalesce *coal)
{
struct ipoib_dev_priv *priv = ipoib_priv(dev);
int ret;
/*
* These values are saved in the private data and returned
* when ipoib_get_coalesce() is called
*/
if (coal->rx_coalesce_usecs > 0xffff ||
coal->rx_max_coalesced_frames > 0xffff)
return -EINVAL;
ret = rdma_set_cq_moderation(priv->recv_cq,
coal->rx_max_coalesced_frames,
coal->rx_coalesce_usecs);
if (ret && ret != -EOPNOTSUPP) {
ipoib_warn(priv, "failed modifying CQ (%d)\n", ret);
return ret;
}
priv->ethtool.coalesce_usecs = coal->rx_coalesce_usecs;
priv->ethtool.max_coalesced_frames = coal->rx_max_coalesced_frames;
return 0;
}
static void ipoib_get_ethtool_stats(struct net_device *dev,
struct ethtool_stats __always_unused *stats,
u64 *data)
{
int i;
struct net_device_stats *net_stats = &dev->stats;
u8 *p = (u8 *)net_stats;
for (i = 0; i < IPOIB_GLOBAL_STATS_LEN; i++)
data[i] = *(u64 *)(p + ipoib_gstrings_stats[i].stat_offset);
}
static void ipoib_get_strings(struct net_device __always_unused *dev,
u32 stringset, u8 *data)
{
u8 *p = data;
int i;
switch (stringset) {
case ETH_SS_STATS:
for (i = 0; i < IPOIB_GLOBAL_STATS_LEN; i++) {
memcpy(p, ipoib_gstrings_stats[i].stat_string,
ETH_GSTRING_LEN);
p += ETH_GSTRING_LEN;
}
break;
default:
break;
}
}
static int ipoib_get_sset_count(struct net_device __always_unused *dev,
int sset)
{
switch (sset) {
case ETH_SS_STATS:
return IPOIB_GLOBAL_STATS_LEN;
default:
break;
}
return -EOPNOTSUPP;
}
/* Return lane speed in unit of 1e6 bit/sec */
static inline int ib_speed_enum_to_int(int speed)
{
switch (speed) {
case IB_SPEED_SDR:
return SPEED_2500;
case IB_SPEED_DDR:
return SPEED_5000;
case IB_SPEED_QDR:
case IB_SPEED_FDR10:
return SPEED_10000;
case IB_SPEED_FDR:
return SPEED_14000;
case IB_SPEED_EDR:
return SPEED_25000;
case IB_SPEED_HDR:
return SPEED_50000;
case IB_SPEED_NDR:
return SPEED_100000;
}
return SPEED_UNKNOWN;
}
static int ipoib_get_link_ksettings(struct net_device *netdev,
struct ethtool_link_ksettings *cmd)
{
struct ipoib_dev_priv *priv = ipoib_priv(netdev);
struct ib_port_attr attr;
int ret, speed, width;
if (!netif_carrier_ok(netdev)) {
cmd->base.speed = SPEED_UNKNOWN;
cmd->base.duplex = DUPLEX_UNKNOWN;
return 0;
}
ret = ib_query_port(priv->ca, priv->port, &attr);
if (ret < 0)
return -EINVAL;
speed = ib_speed_enum_to_int(attr.active_speed);
width = ib_width_enum_to_int(attr.active_width);
if (speed < 0 || width < 0)
return -EINVAL;
/* Except the following are set, the other members of
* the struct ethtool_link_settings are initialized to
* zero in the function __ethtool_get_link_ksettings.
*/
cmd->base.speed = speed * width;
cmd->base.duplex = DUPLEX_FULL;
cmd->base.phy_address = 0xFF;
cmd->base.autoneg = AUTONEG_ENABLE;
cmd->base.port = PORT_OTHER;
return 0;
}
static const struct ethtool_ops ipoib_ethtool_ops = {
.supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS |
ETHTOOL_COALESCE_RX_MAX_FRAMES,
.get_link_ksettings = ipoib_get_link_ksettings,
.get_drvinfo = ipoib_get_drvinfo,
.get_coalesce = ipoib_get_coalesce,
.set_coalesce = ipoib_set_coalesce,
.get_strings = ipoib_get_strings,
.get_ethtool_stats = ipoib_get_ethtool_stats,
.get_sset_count = ipoib_get_sset_count,
.get_link = ethtool_op_get_link,
};
void ipoib_set_ethtool_ops(struct net_device *dev)
{
dev->ethtool_ops = &ipoib_ethtool_ops;
}