![Jakub Kicinski](/assets/img/avatar_default.png)
To get the most out of parsing by the core, and to allow dumping full policies we need to specify which policy applies to nested attrs. For headers it's ethnl_header_policy. $ sed -i 's@\(ETHTOOL_A_.*HEADER\].*=\) { .type = NLA_NESTED },@\1\n\t\tNLA_POLICY_NESTED(ethnl_header_policy),@' net/ethtool/* Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
183 lines
4.4 KiB
C
183 lines
4.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
|
|
#include "netlink.h"
|
|
#include "common.h"
|
|
#include <linux/phy.h>
|
|
|
|
struct linkstate_req_info {
|
|
struct ethnl_req_info base;
|
|
};
|
|
|
|
struct linkstate_reply_data {
|
|
struct ethnl_reply_data base;
|
|
int link;
|
|
int sqi;
|
|
int sqi_max;
|
|
bool link_ext_state_provided;
|
|
struct ethtool_link_ext_state_info ethtool_link_ext_state_info;
|
|
};
|
|
|
|
#define LINKSTATE_REPDATA(__reply_base) \
|
|
container_of(__reply_base, struct linkstate_reply_data, base)
|
|
|
|
const struct nla_policy ethnl_linkstate_get_policy[] = {
|
|
[ETHTOOL_A_LINKSTATE_HEADER] =
|
|
NLA_POLICY_NESTED(ethnl_header_policy),
|
|
};
|
|
|
|
static int linkstate_get_sqi(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)
|
|
ret = -EOPNOTSUPP;
|
|
else
|
|
ret = phydev->drv->get_sqi(phydev);
|
|
mutex_unlock(&phydev->lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
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
|
|
ret = phydev->drv->get_sqi_max(phydev);
|
|
mutex_unlock(&phydev->lock);
|
|
|
|
return ret;
|
|
};
|
|
|
|
static int linkstate_get_link_ext_state(struct net_device *dev,
|
|
struct linkstate_reply_data *data)
|
|
{
|
|
int err;
|
|
|
|
if (!dev->ethtool_ops->get_link_ext_state)
|
|
return -EOPNOTSUPP;
|
|
|
|
err = dev->ethtool_ops->get_link_ext_state(dev, &data->ethtool_link_ext_state_info);
|
|
if (err)
|
|
return err;
|
|
|
|
data->link_ext_state_provided = true;
|
|
|
|
return 0;
|
|
}
|
|
|
|
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);
|
|
|
|
ret = linkstate_get_sqi(dev);
|
|
if (ret < 0 && ret != -EOPNOTSUPP)
|
|
goto out;
|
|
data->sqi = ret;
|
|
|
|
ret = linkstate_get_sqi_max(dev);
|
|
if (ret < 0 && ret != -EOPNOTSUPP)
|
|
goto out;
|
|
data->sqi_max = ret;
|
|
|
|
if (dev->flags & IFF_UP) {
|
|
ret = linkstate_get_link_ext_state(dev, data);
|
|
if (ret < 0 && ret != -EOPNOTSUPP && ret != -ENODATA)
|
|
goto out;
|
|
}
|
|
|
|
ret = 0;
|
|
out:
|
|
ethnl_ops_complete(dev);
|
|
return ret;
|
|
}
|
|
|
|
static int linkstate_reply_size(const struct ethnl_req_info *req_base,
|
|
const struct ethnl_reply_data *reply_base)
|
|
{
|
|
struct linkstate_reply_data *data = LINKSTATE_REPDATA(reply_base);
|
|
int len;
|
|
|
|
len = nla_total_size(sizeof(u8)) /* LINKSTATE_LINK */
|
|
+ 0;
|
|
|
|
if (data->sqi != -EOPNOTSUPP)
|
|
len += nla_total_size(sizeof(u32));
|
|
|
|
if (data->sqi_max != -EOPNOTSUPP)
|
|
len += nla_total_size(sizeof(u32));
|
|
|
|
if (data->link_ext_state_provided)
|
|
len += nla_total_size(sizeof(u8)); /* LINKSTATE_EXT_STATE */
|
|
|
|
if (data->ethtool_link_ext_state_info.__link_ext_substate)
|
|
len += nla_total_size(sizeof(u8)); /* LINKSTATE_EXT_SUBSTATE */
|
|
|
|
return len;
|
|
}
|
|
|
|
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;
|
|
|
|
if (data->sqi != -EOPNOTSUPP &&
|
|
nla_put_u32(skb, ETHTOOL_A_LINKSTATE_SQI, data->sqi))
|
|
return -EMSGSIZE;
|
|
|
|
if (data->sqi_max != -EOPNOTSUPP &&
|
|
nla_put_u32(skb, ETHTOOL_A_LINKSTATE_SQI_MAX, data->sqi_max))
|
|
return -EMSGSIZE;
|
|
|
|
if (data->link_ext_state_provided) {
|
|
if (nla_put_u8(skb, ETHTOOL_A_LINKSTATE_EXT_STATE,
|
|
data->ethtool_link_ext_state_info.link_ext_state))
|
|
return -EMSGSIZE;
|
|
|
|
if (data->ethtool_link_ext_state_info.__link_ext_substate &&
|
|
nla_put_u8(skb, ETHTOOL_A_LINKSTATE_EXT_SUBSTATE,
|
|
data->ethtool_link_ext_state_info.__link_ext_substate))
|
|
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,
|
|
.req_info_size = sizeof(struct linkstate_req_info),
|
|
.reply_data_size = sizeof(struct linkstate_reply_data),
|
|
|
|
.prepare_data = linkstate_prepare_data,
|
|
.reply_size = linkstate_reply_size,
|
|
.fill_reply = linkstate_fill_reply,
|
|
};
|