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// SPDX-License-Identifier: GPL-2.0-only
#include "netlink.h"
#include "common.h"
#include "bitset.h"
#define EEE_MODES_COUNT \
(sizeof_field(struct ethtool_eee, supported) * BITS_PER_BYTE)
struct eee_req_info {
struct ethnl_req_info base;
};
struct eee_reply_data {
struct ethnl_reply_data base;
struct ethtool_eee eee;
};
#define EEE_REPDATA(__reply_base) \
container_of(__reply_base, struct eee_reply_data, base)
const struct nla_policy ethnl_eee_get_policy[] = {
[ETHTOOL_A_EEE_HEADER] =
NLA_POLICY_NESTED(ethnl_header_policy),
};
static int eee_prepare_data(const struct ethnl_req_info *req_base,
struct ethnl_reply_data *reply_base,
const struct genl_info *info)
{
struct eee_reply_data *data = EEE_REPDATA(reply_base);
struct net_device *dev = reply_base->dev;
int ret;
if (!dev->ethtool_ops->get_eee)
return -EOPNOTSUPP;
ret = ethnl_ops_begin(dev);
if (ret < 0)
return ret;
ret = dev->ethtool_ops->get_eee(dev, &data->eee);
ethnl_ops_complete(dev);
return ret;
}
static int eee_reply_size(const struct ethnl_req_info *req_base,
const struct ethnl_reply_data *reply_base)
{
bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS;
const struct eee_reply_data *data = EEE_REPDATA(reply_base);
const struct ethtool_eee *eee = &data->eee;
int len = 0;
int ret;
BUILD_BUG_ON(sizeof(eee->advertised) * BITS_PER_BYTE !=
EEE_MODES_COUNT);
BUILD_BUG_ON(sizeof(eee->lp_advertised) * BITS_PER_BYTE !=
EEE_MODES_COUNT);
/* MODES_OURS */
ret = ethnl_bitset32_size(&eee->advertised, &eee->supported,
EEE_MODES_COUNT, link_mode_names, compact);
if (ret < 0)
return ret;
len += ret;
/* MODES_PEERS */
ret = ethnl_bitset32_size(&eee->lp_advertised, NULL,
EEE_MODES_COUNT, link_mode_names, compact);
if (ret < 0)
return ret;
len += ret;
len += nla_total_size(sizeof(u8)) + /* _EEE_ACTIVE */
nla_total_size(sizeof(u8)) + /* _EEE_ENABLED */
nla_total_size(sizeof(u8)) + /* _EEE_TX_LPI_ENABLED */
nla_total_size(sizeof(u32)); /* _EEE_TX_LPI_TIMER */
return len;
}
static int eee_fill_reply(struct sk_buff *skb,
const struct ethnl_req_info *req_base,
const struct ethnl_reply_data *reply_base)
{
bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS;
const struct eee_reply_data *data = EEE_REPDATA(reply_base);
const struct ethtool_eee *eee = &data->eee;
int ret;
ret = ethnl_put_bitset32(skb, ETHTOOL_A_EEE_MODES_OURS,
&eee->advertised, &eee->supported,
EEE_MODES_COUNT, link_mode_names, compact);
if (ret < 0)
return ret;
ret = ethnl_put_bitset32(skb, ETHTOOL_A_EEE_MODES_PEER,
&eee->lp_advertised, NULL, EEE_MODES_COUNT,
link_mode_names, compact);
if (ret < 0)
return ret;
if (nla_put_u8(skb, ETHTOOL_A_EEE_ACTIVE, !!eee->eee_active) ||
nla_put_u8(skb, ETHTOOL_A_EEE_ENABLED, !!eee->eee_enabled) ||
nla_put_u8(skb, ETHTOOL_A_EEE_TX_LPI_ENABLED,
!!eee->tx_lpi_enabled) ||
nla_put_u32(skb, ETHTOOL_A_EEE_TX_LPI_TIMER, eee->tx_lpi_timer))
return -EMSGSIZE;
return 0;
}
/* EEE_SET */
const struct nla_policy ethnl_eee_set_policy[] = {
[ETHTOOL_A_EEE_HEADER] =
NLA_POLICY_NESTED(ethnl_header_policy),
[ETHTOOL_A_EEE_MODES_OURS] = { .type = NLA_NESTED },
[ETHTOOL_A_EEE_ENABLED] = { .type = NLA_U8 },
[ETHTOOL_A_EEE_TX_LPI_ENABLED] = { .type = NLA_U8 },
[ETHTOOL_A_EEE_TX_LPI_TIMER] = { .type = NLA_U32 },
};
static int
ethnl_set_eee_validate(struct ethnl_req_info *req_info, struct genl_info *info)
{
const struct ethtool_ops *ops = req_info->dev->ethtool_ops;
return ops->get_eee && ops->set_eee ? 1 : -EOPNOTSUPP;
}
static int
ethnl_set_eee(struct ethnl_req_info *req_info, struct genl_info *info)
{
struct net_device *dev = req_info->dev;
struct nlattr **tb = info->attrs;
struct ethtool_eee eee = {};
bool mod = false;
int ret;
ret = dev->ethtool_ops->get_eee(dev, &eee);
if (ret < 0)
return ret;
ret = ethnl_update_bitset32(&eee.advertised, EEE_MODES_COUNT,
tb[ETHTOOL_A_EEE_MODES_OURS],
link_mode_names, info->extack, &mod);
if (ret < 0)
return ret;
ethnl_update_bool32(&eee.eee_enabled, tb[ETHTOOL_A_EEE_ENABLED], &mod);
ethnl_update_bool32(&eee.tx_lpi_enabled,
tb[ETHTOOL_A_EEE_TX_LPI_ENABLED], &mod);
ethnl_update_u32(&eee.tx_lpi_timer, tb[ETHTOOL_A_EEE_TX_LPI_TIMER],
&mod);
if (!mod)
return 0;
ret = dev->ethtool_ops->set_eee(dev, &eee);
return ret < 0 ? ret : 1;
}
const struct ethnl_request_ops ethnl_eee_request_ops = {
.request_cmd = ETHTOOL_MSG_EEE_GET,
.reply_cmd = ETHTOOL_MSG_EEE_GET_REPLY,
.hdr_attr = ETHTOOL_A_EEE_HEADER,
.req_info_size = sizeof(struct eee_req_info),
.reply_data_size = sizeof(struct eee_reply_data),
.prepare_data = eee_prepare_data,
.reply_size = eee_reply_size,
.fill_reply = eee_fill_reply,
.set_validate = ethnl_set_eee_validate,
.set = ethnl_set_eee,
.set_ntf_cmd = ETHTOOL_MSG_EEE_NTF,
};
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