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// SPDX-License-Identifier: GPL-2.0-only
#include "netlink.h"
#include "common.h"
struct linkinfo_req_info {
struct ethnl_req_info base;
};
struct linkinfo_reply_data {
struct ethnl_reply_data base;
struct ethtool_link_ksettings ksettings;
struct ethtool_link_settings *lsettings;
};
#define LINKINFO_REPDATA(__reply_base) \
container_of(__reply_base, struct linkinfo_reply_data, base)
static const struct nla_policy
linkinfo_get_policy[ETHTOOL_A_LINKINFO_MAX + 1] = {
[ETHTOOL_A_LINKINFO_UNSPEC] = { .type = NLA_REJECT },
[ETHTOOL_A_LINKINFO_HEADER] = { .type = NLA_NESTED },
[ETHTOOL_A_LINKINFO_PORT] = { .type = NLA_REJECT },
[ETHTOOL_A_LINKINFO_PHYADDR] = { .type = NLA_REJECT },
[ETHTOOL_A_LINKINFO_TP_MDIX] = { .type = NLA_REJECT },
[ETHTOOL_A_LINKINFO_TP_MDIX_CTRL] = { .type = NLA_REJECT },
[ETHTOOL_A_LINKINFO_TRANSCEIVER] = { .type = NLA_REJECT },
};
static int linkinfo_prepare_data(const struct ethnl_req_info *req_base,
struct ethnl_reply_data *reply_base,
struct genl_info *info)
{
struct linkinfo_reply_data *data = LINKINFO_REPDATA(reply_base);
struct net_device *dev = reply_base->dev;
int ret;
data->lsettings = &data->ksettings.base;
ret = ethnl_ops_begin(dev);
if (ret < 0)
return ret;
ret = __ethtool_get_link_ksettings(dev, &data->ksettings);
if (ret < 0 && info)
GENL_SET_ERR_MSG(info, "failed to retrieve link settings");
ethnl_ops_complete(dev);
return ret;
}
static int linkinfo_reply_size(const struct ethnl_req_info *req_base,
const struct ethnl_reply_data *reply_base)
{
return nla_total_size(sizeof(u8)) /* LINKINFO_PORT */
+ nla_total_size(sizeof(u8)) /* LINKINFO_PHYADDR */
+ nla_total_size(sizeof(u8)) /* LINKINFO_TP_MDIX */
+ nla_total_size(sizeof(u8)) /* LINKINFO_TP_MDIX_CTRL */
+ nla_total_size(sizeof(u8)) /* LINKINFO_TRANSCEIVER */
+ 0;
}
static int linkinfo_fill_reply(struct sk_buff *skb,
const struct ethnl_req_info *req_base,
const struct ethnl_reply_data *reply_base)
{
const struct linkinfo_reply_data *data = LINKINFO_REPDATA(reply_base);
if (nla_put_u8(skb, ETHTOOL_A_LINKINFO_PORT, data->lsettings->port) ||
nla_put_u8(skb, ETHTOOL_A_LINKINFO_PHYADDR,
data->lsettings->phy_address) ||
nla_put_u8(skb, ETHTOOL_A_LINKINFO_TP_MDIX,
data->lsettings->eth_tp_mdix) ||
nla_put_u8(skb, ETHTOOL_A_LINKINFO_TP_MDIX_CTRL,
data->lsettings->eth_tp_mdix_ctrl) ||
nla_put_u8(skb, ETHTOOL_A_LINKINFO_TRANSCEIVER,
data->lsettings->transceiver))
return -EMSGSIZE;
return 0;
}
const struct ethnl_request_ops ethnl_linkinfo_request_ops = {
.request_cmd = ETHTOOL_MSG_LINKINFO_GET,
.reply_cmd = ETHTOOL_MSG_LINKINFO_GET_REPLY,
.hdr_attr = ETHTOOL_A_LINKINFO_HEADER,
.max_attr = ETHTOOL_A_LINKINFO_MAX,
.req_info_size = sizeof(struct linkinfo_req_info),
.reply_data_size = sizeof(struct linkinfo_reply_data),
.request_policy = linkinfo_get_policy,
.prepare_data = linkinfo_prepare_data,
.reply_size = linkinfo_reply_size,
.fill_reply = linkinfo_fill_reply,
};
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