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net: ethernet: aquantia: Ethtool support
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Add the driver interfaces required for support by the ethtool utility.

Signed-off-by: Alexander Loktionov <Alexander.Loktionov@aquantia.com>
Signed-off-by: Dmitrii Tarakanov <Dmitrii.Tarakanov@aquantia.com>
Signed-off-by: Pavel Belous <Pavel.Belous@aquantia.com>
Signed-off-by: Dmitry Bezrukov <Dmitry.Bezrukov@aquantia.com>
Signed-off-by: David M. VomLehn <vomlehn@texas.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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David VomLehn authored and David S. Miller committed Jan 24, 2017
1 parent 753f478 commit c5760d0
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261 changes: 261 additions & 0 deletions drivers/net/ethernet/aquantia/atlantic/aq_ethtool.c
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/*
* aQuantia Corporation Network Driver
* Copyright (C) 2014-2017 aQuantia Corporation. All rights reserved
*
* 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.
*/

/* File aq_ethtool.c: Definition of ethertool related functions. */

#include "aq_ethtool.h"
#include "aq_nic.h"

static void aq_ethtool_get_regs(struct net_device *ndev,
struct ethtool_regs *regs, void *p)
{
struct aq_nic_s *aq_nic = netdev_priv(ndev);
u32 regs_count = aq_nic_get_regs_count(aq_nic);

memset(p, 0, regs_count * sizeof(u32));
aq_nic_get_regs(aq_nic, regs, p);
}

static int aq_ethtool_get_regs_len(struct net_device *ndev)
{
struct aq_nic_s *aq_nic = netdev_priv(ndev);
u32 regs_count = aq_nic_get_regs_count(aq_nic);

return regs_count * sizeof(u32);
}

static u32 aq_ethtool_get_link(struct net_device *ndev)
{
return ethtool_op_get_link(ndev);
}

static int aq_ethtool_get_settings(struct net_device *ndev,
struct ethtool_cmd *cmd)
{
struct aq_nic_s *aq_nic = netdev_priv(ndev);

aq_nic_get_link_settings(aq_nic, cmd);
ethtool_cmd_speed_set(cmd, netif_carrier_ok(ndev) ?
aq_nic_get_link_speed(aq_nic) : 0U);

return 0;
}

static int aq_ethtool_set_settings(struct net_device *ndev,
struct ethtool_cmd *cmd)
{
struct aq_nic_s *aq_nic = netdev_priv(ndev);

return aq_nic_set_link_settings(aq_nic, cmd);
}

/* there "5U" is number of queue[#] stats lines (InPackets+...+InErrors) */
static const unsigned int aq_ethtool_stat_queue_lines = 5U;
static const unsigned int aq_ethtool_stat_queue_chars =
5U * ETH_GSTRING_LEN;
static const char aq_ethtool_stat_names[][ETH_GSTRING_LEN] = {
"InPackets",
"InUCast",
"InMCast",
"InBCast",
"InErrors",
"OutPackets",
"OutUCast",
"OutMCast",
"OutBCast",
"InUCastOctects",
"OutUCastOctects",
"InMCastOctects",
"OutMCastOctects",
"InBCastOctects",
"OutBCastOctects",
"InOctects",
"OutOctects",
"InPacketsDma",
"OutPacketsDma",
"InOctetsDma",
"OutOctetsDma",
"InDroppedDma",
"Queue[0] InPackets",
"Queue[0] OutPackets",
"Queue[0] InJumboPackets",
"Queue[0] InLroPackets",
"Queue[0] InErrors",
"Queue[1] InPackets",
"Queue[1] OutPackets",
"Queue[1] InJumboPackets",
"Queue[1] InLroPackets",
"Queue[1] InErrors",
"Queue[2] InPackets",
"Queue[2] OutPackets",
"Queue[2] InJumboPackets",
"Queue[2] InLroPackets",
"Queue[2] InErrors",
"Queue[3] InPackets",
"Queue[3] OutPackets",
"Queue[3] InJumboPackets",
"Queue[3] InLroPackets",
"Queue[3] InErrors",
"Queue[4] InPackets",
"Queue[4] OutPackets",
"Queue[4] InJumboPackets",
"Queue[4] InLroPackets",
"Queue[4] InErrors",
"Queue[5] InPackets",
"Queue[5] OutPackets",
"Queue[5] InJumboPackets",
"Queue[5] InLroPackets",
"Queue[5] InErrors",
"Queue[6] InPackets",
"Queue[6] OutPackets",
"Queue[6] InJumboPackets",
"Queue[6] InLroPackets",
"Queue[6] InErrors",
"Queue[7] InPackets",
"Queue[7] OutPackets",
"Queue[7] InJumboPackets",
"Queue[7] InLroPackets",
"Queue[7] InErrors",
};

static void aq_ethtool_stats(struct net_device *ndev,
struct ethtool_stats *stats, u64 *data)
{
struct aq_nic_s *aq_nic = netdev_priv(ndev);

/* ASSERT: Need add lines to aq_ethtool_stat_names if AQ_CFG_VECS_MAX > 8 */
BUILD_BUG_ON(AQ_CFG_VECS_MAX > 8);
memset(data, 0, ARRAY_SIZE(aq_ethtool_stat_names) * sizeof(u64));
aq_nic_get_stats(aq_nic, data);
}

static void aq_ethtool_get_drvinfo(struct net_device *ndev,
struct ethtool_drvinfo *drvinfo)
{
struct aq_nic_s *aq_nic = netdev_priv(ndev);
struct aq_nic_cfg_s *cfg = aq_nic_get_cfg(aq_nic);
struct pci_dev *pdev = to_pci_dev(ndev->dev.parent);
u32 firmware_version = aq_nic_get_fw_version(aq_nic);
u32 regs_count = aq_nic_get_regs_count(aq_nic);

strlcat(drvinfo->driver, AQ_CFG_DRV_NAME, sizeof(drvinfo->driver));
strlcat(drvinfo->version, AQ_CFG_DRV_VERSION, sizeof(drvinfo->version));

snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
"%u.%u.%u", firmware_version >> 24,
(firmware_version >> 16) & 0xFFU, firmware_version & 0xFFFFU);

strlcpy(drvinfo->bus_info, pdev ? pci_name(pdev) : "",
sizeof(drvinfo->bus_info));
drvinfo->n_stats = ARRAY_SIZE(aq_ethtool_stat_names) -
(AQ_CFG_VECS_MAX - cfg->vecs) * aq_ethtool_stat_queue_lines;
drvinfo->testinfo_len = 0;
drvinfo->regdump_len = regs_count;
drvinfo->eedump_len = 0;
}

static void aq_ethtool_get_strings(struct net_device *ndev,
u32 stringset, u8 *data)
{
struct aq_nic_s *aq_nic = netdev_priv(ndev);
struct aq_nic_cfg_s *cfg = aq_nic_get_cfg(aq_nic);

if (stringset == ETH_SS_STATS)
memcpy(data, *aq_ethtool_stat_names,
sizeof(aq_ethtool_stat_names) -
(AQ_CFG_VECS_MAX - cfg->vecs) *
aq_ethtool_stat_queue_chars);
}

static int aq_ethtool_get_sset_count(struct net_device *ndev, int stringset)
{
int ret = 0;
struct aq_nic_s *aq_nic = netdev_priv(ndev);
struct aq_nic_cfg_s *cfg = aq_nic_get_cfg(aq_nic);

switch (stringset) {
case ETH_SS_STATS:
ret = ARRAY_SIZE(aq_ethtool_stat_names) -
(AQ_CFG_VECS_MAX - cfg->vecs) *
aq_ethtool_stat_queue_lines;
break;
default:
ret = -EOPNOTSUPP;
}
return ret;
}

static u32 aq_ethtool_get_rss_indir_size(struct net_device *ndev)
{
return AQ_CFG_RSS_INDIRECTION_TABLE_MAX;
}

static u32 aq_ethtool_get_rss_key_size(struct net_device *ndev)
{
struct aq_nic_s *aq_nic = netdev_priv(ndev);
struct aq_nic_cfg_s *cfg = aq_nic_get_cfg(aq_nic);

return sizeof(cfg->aq_rss.hash_secret_key);
}

static int aq_ethtool_get_rss(struct net_device *ndev, u32 *indir, u8 *key,
u8 *hfunc)
{
struct aq_nic_s *aq_nic = netdev_priv(ndev);
struct aq_nic_cfg_s *cfg = aq_nic_get_cfg(aq_nic);
unsigned int i = 0U;

if (hfunc)
*hfunc = ETH_RSS_HASH_TOP; /* Toeplitz */
if (indir) {
for (i = 0; i < AQ_CFG_RSS_INDIRECTION_TABLE_MAX; i++)
indir[i] = cfg->aq_rss.indirection_table[i];
}
if (key)
memcpy(key, cfg->aq_rss.hash_secret_key,
sizeof(cfg->aq_rss.hash_secret_key));
return 0;
}

static int aq_ethtool_get_rxnfc(struct net_device *ndev,
struct ethtool_rxnfc *cmd,
u32 *rule_locs)
{
struct aq_nic_s *aq_nic = netdev_priv(ndev);
struct aq_nic_cfg_s *cfg = aq_nic_get_cfg(aq_nic);
int err = 0;

switch (cmd->cmd) {
case ETHTOOL_GRXRINGS:
cmd->data = cfg->vecs;
break;

default:
err = -EOPNOTSUPP;
break;
}

return err;
}

const struct ethtool_ops aq_ethtool_ops = {
.get_link = aq_ethtool_get_link,
.get_regs_len = aq_ethtool_get_regs_len,
.get_regs = aq_ethtool_get_regs,
.get_settings = aq_ethtool_get_settings,
.set_settings = aq_ethtool_set_settings,
.get_drvinfo = aq_ethtool_get_drvinfo,
.get_strings = aq_ethtool_get_strings,
.get_rxfh_indir_size = aq_ethtool_get_rss_indir_size,
.get_rxfh_key_size = aq_ethtool_get_rss_key_size,
.get_rxfh = aq_ethtool_get_rss,
.get_rxnfc = aq_ethtool_get_rxnfc,
.get_sset_count = aq_ethtool_get_sset_count,
.get_ethtool_stats = aq_ethtool_stats
};
19 changes: 19 additions & 0 deletions drivers/net/ethernet/aquantia/atlantic/aq_ethtool.h
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/*
* aQuantia Corporation Network Driver
* Copyright (C) 2014-2017 aQuantia Corporation. All rights reserved
*
* 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.
*/

/* File aq_ethtool.h: Declaration of ethertool related functions. */

#ifndef AQ_ETHTOOL_H
#define AQ_ETHTOOL_H

#include "aq_common.h"

extern const struct ethtool_ops aq_ethtool_ops;

#endif /* AQ_ETHTOOL_H */

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