Orange Pi5 kernel

// 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,
<------><------><------>    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;
}
 
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,
};
 
/* 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 },
};
 
int ethnl_set_eee(struct sk_buff *skb, struct genl_info *info)
{
<------>struct ethnl_req_info req_info = {};
<------>struct nlattr **tb = info->attrs;
<------>const struct ethtool_ops *ops;
<------>struct ethtool_eee eee = {};
<------>struct net_device *dev;
<------>bool mod = false;
<------>int ret;
 
<------>ret = ethnl_parse_header_dev_get(&req_info,
<------><------><------><------><------> tb[ETHTOOL_A_EEE_HEADER],
<------><------><------><------><------> genl_info_net(info), info->extack,
<------><------><------><------><------> true);
<------>if (ret < 0)
<------><------>return ret;
<------>dev = req_info.dev;
<------>ops = dev->ethtool_ops;
<------>ret = -EOPNOTSUPP;
<------>if (!ops->get_eee || !ops->set_eee)
<------><------>goto out_dev;
 
<------>rtnl_lock();
<------>ret = ethnl_ops_begin(dev);
<------>if (ret < 0)
<------><------>goto out_rtnl;
<------>ret = ops->get_eee(dev, &eee);
<------>if (ret < 0)
<------><------>goto out_ops;
 
<------>ret = ethnl_update_bitset32(&eee.advertised, EEE_MODES_COUNT,
<------><------><------><------>    tb[ETHTOOL_A_EEE_MODES_OURS],
<------><------><------><------>    link_mode_names, info->extack, &mod);
<------>if (ret < 0)
<------><------>goto out_ops;
<------>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);
<------>ret = 0;
<------>if (!mod)
<------><------>goto out_ops;
 
<------>ret = dev->ethtool_ops->set_eee(dev, &eee);
<------>if (ret < 0)
<------><------>goto out_ops;
<------>ethtool_notify(dev, ETHTOOL_MSG_EEE_NTF, NULL);
 
out_ops:
<------>ethnl_ops_complete(dev);
out_rtnl:
<------>rtnl_unlock();
out_dev:
<------>dev_put(dev);
<------>return ret;
}