linux/net/ethtool/linkstate.c

// SPDX-License-Identifier: GPL-2.0-only

#include "netlink.h"
#include "common.h"
#include <linux/phy.h>

struct linkstate_req_info { … };

struct linkstate_reply_data { … };

#define LINKSTATE_REPDATA(__reply_base) …

const struct nla_policy ethnl_linkstate_get_policy[] = …;

static int linkstate_get_sqi(struct net_device *dev)
{ … }

static int linkstate_get_sqi_max(struct net_device *dev)
{
	struct phy_device *phydev = dev->phydev;
	int ret;

	if (!phydev)
		return -EOPNOTSUPP;

	mutex_lock(&phydev->lock);
	if (!phydev->drv || !phydev->drv->get_sqi_max)
		ret = -EOPNOTSUPP;
	else if (!phydev->link)
		ret = -ENETDOWN;
	else
		ret = phydev->drv->get_sqi_max(phydev);
	mutex_unlock(&phydev->lock);

	return ret;
};

static bool linkstate_sqi_critical_error(int sqi)
{ … }

static bool linkstate_sqi_valid(struct linkstate_reply_data *data)
{ … }

static int linkstate_get_link_ext_state(struct net_device *dev,
					struct linkstate_reply_data *data)
{ … }

static int linkstate_prepare_data(const struct ethnl_req_info *req_base,
				  struct ethnl_reply_data *reply_base,
				  const struct genl_info *info)
{ … }

static int linkstate_reply_size(const struct ethnl_req_info *req_base,
				const struct ethnl_reply_data *reply_base)
{ … }

static int linkstate_fill_reply(struct sk_buff *skb,
				const struct ethnl_req_info *req_base,
				const struct ethnl_reply_data *reply_base)
{ … }

const struct ethnl_request_ops ethnl_linkstate_request_ops = …;