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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright IBM Corp. 2018
*/
#define KMSG_COMPONENT "qeth"
#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
#include <linux/ethtool.h>
#include "qeth_core.h"
#define QETH_TXQ_STAT(_name, _stat) { \
.name = _name, \
.offset = offsetof(struct qeth_out_q_stats, _stat) \
}
#define QETH_CARD_STAT(_name, _stat) { \
.name = _name, \
.offset = offsetof(struct qeth_card_stats, _stat) \
}
struct qeth_stats {
char name[ETH_GSTRING_LEN];
unsigned int offset;
};
static const struct qeth_stats txq_stats[] = {
QETH_TXQ_STAT("IO buffers", bufs),
QETH_TXQ_STAT("IO buffer elements", buf_elements),
QETH_TXQ_STAT("packed IO buffers", bufs_pack),
QETH_TXQ_STAT("skbs", tx_packets),
QETH_TXQ_STAT("packed skbs", skbs_pack),
QETH_TXQ_STAT("SG skbs", skbs_sg),
QETH_TXQ_STAT("HW csum skbs", skbs_csum),
QETH_TXQ_STAT("TSO skbs", skbs_tso),
QETH_TXQ_STAT("linearized skbs", skbs_linearized),
QETH_TXQ_STAT("linearized+error skbs", skbs_linearized_fail),
QETH_TXQ_STAT("TSO bytes", tso_bytes),
QETH_TXQ_STAT("Packing mode switches", packing_mode_switch),
QETH_TXQ_STAT("Queue stopped", stopped),
};
static const struct qeth_stats card_stats[] = {
QETH_CARD_STAT("rx0 IO buffers", rx_bufs),
QETH_CARD_STAT("rx0 HW csum skbs", rx_skb_csum),
QETH_CARD_STAT("rx0 SG skbs", rx_sg_skbs),
QETH_CARD_STAT("rx0 SG page frags", rx_sg_frags),
QETH_CARD_STAT("rx0 SG page allocs", rx_sg_alloc_page),
};
#define TXQ_STATS_LEN ARRAY_SIZE(txq_stats)
#define CARD_STATS_LEN ARRAY_SIZE(card_stats)
static void qeth_add_stat_data(u64 **dst, void *src,
const struct qeth_stats stats[],
unsigned int size)
{
unsigned int i;
char *stat;
for (i = 0; i < size; i++) {
stat = (char *)src + stats[i].offset;
**dst = *(u64 *)stat;
(*dst)++;
}
}
static void qeth_add_stat_strings(u8 **data, const char *prefix,
const struct qeth_stats stats[],
unsigned int size)
{
unsigned int i;
for (i = 0; i < size; i++) {
snprintf(*data, ETH_GSTRING_LEN, "%s%s", prefix, stats[i].name);
*data += ETH_GSTRING_LEN;
}
}
static int qeth_get_sset_count(struct net_device *dev, int stringset)
{
struct qeth_card *card = dev->ml_priv;
switch (stringset) {
case ETH_SS_STATS:
return CARD_STATS_LEN +
card->qdio.no_out_queues * TXQ_STATS_LEN;
default:
return -EINVAL;
}
}
static void qeth_get_ethtool_stats(struct net_device *dev,
struct ethtool_stats *stats, u64 *data)
{
struct qeth_card *card = dev->ml_priv;
unsigned int i;
qeth_add_stat_data(&data, &card->stats, card_stats, CARD_STATS_LEN);
for (i = 0; i < card->qdio.no_out_queues; i++)
qeth_add_stat_data(&data, &card->qdio.out_qs[i]->stats,
txq_stats, TXQ_STATS_LEN);
}
static void qeth_get_ringparam(struct net_device *dev,
struct ethtool_ringparam *param)
{
struct qeth_card *card = dev->ml_priv;
param->rx_max_pending = QDIO_MAX_BUFFERS_PER_Q;
param->rx_mini_max_pending = 0;
param->rx_jumbo_max_pending = 0;
param->tx_max_pending = QDIO_MAX_BUFFERS_PER_Q;
param->rx_pending = card->qdio.in_buf_pool.buf_count;
param->rx_mini_pending = 0;
param->rx_jumbo_pending = 0;
param->tx_pending = QDIO_MAX_BUFFERS_PER_Q;
}
static void qeth_get_strings(struct net_device *dev, u32 stringset, u8 *data)
{
struct qeth_card *card = dev->ml_priv;
char prefix[ETH_GSTRING_LEN] = "";
unsigned int i;
switch (stringset) {
case ETH_SS_STATS:
qeth_add_stat_strings(&data, prefix, card_stats,
CARD_STATS_LEN);
for (i = 0; i < card->qdio.no_out_queues; i++) {
snprintf(prefix, ETH_GSTRING_LEN, "tx%u ", i);
qeth_add_stat_strings(&data, prefix, txq_stats,
TXQ_STATS_LEN);
}
break;
default:
WARN_ON(1);
break;
}
}
static void qeth_get_drvinfo(struct net_device *dev,
struct ethtool_drvinfo *info)
{
struct qeth_card *card = dev->ml_priv;
strlcpy(info->driver, IS_LAYER2(card) ? "qeth_l2" : "qeth_l3",
sizeof(info->driver));
strlcpy(info->version, "1.0", sizeof(info->version));
strlcpy(info->fw_version, card->info.mcl_level,
sizeof(info->fw_version));
snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s",
CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card));
}
static void qeth_get_channels(struct net_device *dev,
struct ethtool_channels *channels)
{
struct qeth_card *card = dev->ml_priv;
channels->max_rx = dev->num_rx_queues;
channels->max_tx = card->qdio.no_out_queues;
channels->max_other = 0;
channels->max_combined = 0;
channels->rx_count = dev->real_num_rx_queues;
channels->tx_count = dev->real_num_tx_queues;
channels->other_count = 0;
channels->combined_count = 0;
}
/* Helper function to fill 'advertising' and 'supported' which are the same. */
/* Autoneg and full-duplex are supported and advertised unconditionally. */
/* Always advertise and support all speeds up to specified, and only one */
/* specified port type. */
static void qeth_set_cmd_adv_sup(struct ethtool_link_ksettings *cmd,
int maxspeed, int porttype)
{
ethtool_link_ksettings_zero_link_mode(cmd, supported);
ethtool_link_ksettings_zero_link_mode(cmd, advertising);
ethtool_link_ksettings_zero_link_mode(cmd, lp_advertising);
ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg);
ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg);
switch (porttype) {
case PORT_TP:
ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
break;
case PORT_FIBRE:
ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);
ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE);
break;
default:
ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
WARN_ON_ONCE(1);
}
/* partially does fall through, to also select lower speeds */
switch (maxspeed) {
case SPEED_25000:
ethtool_link_ksettings_add_link_mode(cmd, supported,
25000baseSR_Full);
ethtool_link_ksettings_add_link_mode(cmd, advertising,
25000baseSR_Full);
break;
case SPEED_10000:
ethtool_link_ksettings_add_link_mode(cmd, supported,
10000baseT_Full);
ethtool_link_ksettings_add_link_mode(cmd, advertising,
10000baseT_Full);
/* fall through */
case SPEED_1000:
ethtool_link_ksettings_add_link_mode(cmd, supported,
1000baseT_Full);
ethtool_link_ksettings_add_link_mode(cmd, advertising,
1000baseT_Full);
ethtool_link_ksettings_add_link_mode(cmd, supported,
1000baseT_Half);
ethtool_link_ksettings_add_link_mode(cmd, advertising,
1000baseT_Half);
/* fall through */
case SPEED_100:
ethtool_link_ksettings_add_link_mode(cmd, supported,
100baseT_Full);
ethtool_link_ksettings_add_link_mode(cmd, advertising,
100baseT_Full);
ethtool_link_ksettings_add_link_mode(cmd, supported,
100baseT_Half);
ethtool_link_ksettings_add_link_mode(cmd, advertising,
100baseT_Half);
/* fall through */
case SPEED_10:
ethtool_link_ksettings_add_link_mode(cmd, supported,
10baseT_Full);
ethtool_link_ksettings_add_link_mode(cmd, advertising,
10baseT_Full);
ethtool_link_ksettings_add_link_mode(cmd, supported,
10baseT_Half);
ethtool_link_ksettings_add_link_mode(cmd,
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