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// SPDX-License-Identifier: GPL-2.0-only
#include "netlink.h"
#include "common.h"
struct linkstate_req_info {
struct ethnl_req_info base;
};
struct linkstate_reply_data {
struct ethnl_reply_data base;
int link;
};
#define LINKSTATE_REPDATA(__reply_base) \
container_of(__reply_base, struct linkstate_reply_data, base)
static const struct nla_policy
linkstate_get_policy[ETHTOOL_A_LINKSTATE_MAX + 1] = {
[ETHTOOL_A_LINKSTATE_UNSPEC] = { .type = NLA_REJECT },
[ETHTOOL_A_LINKSTATE_HEADER] = { .type = NLA_NESTED },
[ETHTOOL_A_LINKSTATE_LINK] = { .type = NLA_REJECT },
};
static int linkstate_prepare_data(const struct ethnl_req_info *req_base,
struct ethnl_reply_data *reply_base,
struct genl_info *info)
{
struct linkstate_reply_data *data = LINKSTATE_REPDATA(reply_base);
struct net_device *dev = reply_base->dev;
int ret;
ret = ethnl_ops_begin(dev);
if (ret < 0)
return ret;
data->link = __ethtool_get_link(dev);
ethnl_ops_complete(dev);
return 0;
}
static int linkstate_reply_size(const struct ethnl_req_info *req_base,
const struct ethnl_reply_data *reply_base)
{
return nla_total_size(sizeof(u8)) /* LINKSTATE_LINK */
+ 0;
}
static int linkstate_fill_reply(struct sk_buff *skb,
const struct ethnl_req_info *req_base,
const struct ethnl_reply_data *reply_base)
{
struct linkstate_reply_data *data = LINKSTATE_REPDATA(reply_base);
if (data->link >= 0 &&
nla_put_u8(skb, ETHTOOL_A_LINKSTATE_LINK, !!data->link))
return -EMSGSIZE;
return 0;
}
const struct ethnl_request_ops ethnl_linkstate_request_ops = {
.request_cmd = ETHTOOL_MSG_LINKSTATE_GET,
.reply_cmd = ETHTOOL_MSG_LINKSTATE_GET_REPLY,
.hdr_attr = ETHTOOL_A_LINKSTATE_HEADER,
.max_attr = ETHTOOL_A_LINKSTATE_MAX,
.req_info_size = sizeof(struct linkstate_req_info),
.reply_data_size = sizeof(struct linkstate_reply_data),
.request_policy = linkstate_get_policy,
.prepare_data = linkstate_prepare_data,
.reply_size = linkstate_reply_size,
.fill_reply = linkstate_fill_reply,
};
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