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// SPDX-License-Identifier: GPL-2.0-only
#include <linux/net_tstamp.h>
#include <linux/phy.h>
#include "netlink.h"
#include "common.h"
#include "bitset.h"
struct ts_req_info {
struct ethnl_req_info base;
};
struct ts_reply_data {
struct ethnl_reply_data base;
enum timestamping_layer ts_layer;
};
#define TS_REPDATA(__reply_base) \
container_of(__reply_base, struct ts_reply_data, base)
/* TS_GET */
const struct nla_policy ethnl_ts_get_policy[] = {
[ETHTOOL_A_TS_HEADER] =
NLA_POLICY_NESTED(ethnl_header_policy),
};
static int ts_prepare_data(const struct ethnl_req_info *req_base,
struct ethnl_reply_data *reply_base,
const struct genl_info *info)
{
struct ts_reply_data *data = TS_REPDATA(reply_base);
struct net_device *dev = reply_base->dev;
int ret;
ret = ethnl_ops_begin(dev);
if (ret < 0)
return ret;
data->ts_layer = dev->ts_layer;
ethnl_ops_complete(dev);
return ret;
}
static int ts_reply_size(const struct ethnl_req_info *req_base,
const struct ethnl_reply_data *reply_base)
{
return nla_total_size(sizeof(u32));
}
static int ts_fill_reply(struct sk_buff *skb,
const struct ethnl_req_info *req_base,
const struct ethnl_reply_data *reply_base)
{
struct ts_reply_data *data = TS_REPDATA(reply_base);
return nla_put_u32(skb, ETHTOOL_A_TS_LAYER, data->ts_layer);
}
/* TS_SET */
const struct nla_policy ethnl_ts_set_policy[] = {
[ETHTOOL_A_TS_HEADER] = NLA_POLICY_NESTED(ethnl_header_policy),
[ETHTOOL_A_TS_LAYER] = NLA_POLICY_RANGE(NLA_U32, 0,
__TIMESTAMPING_COUNT - 1)
};
static int ethnl_set_ts_validate(struct ethnl_req_info *req_info,
struct genl_info *info)
{
struct nlattr **tb = info->attrs;
const struct net_device_ops *ops = req_info->dev->netdev_ops;
if (!ops->ndo_hwtstamp_set)
return -EOPNOTSUPP;
if (!tb[ETHTOOL_A_TS_LAYER])
return 0;
return 1;
}
static int ethnl_set_ts(struct ethnl_req_info *req_info, struct genl_info *info)
{
struct net_device *dev = req_info->dev;
const struct ethtool_ops *ops = dev->ethtool_ops;
struct kernel_hwtstamp_config config = {0};
struct nlattr **tb = info->attrs;
enum timestamping_layer ts_layer;
bool mod = false;
int ret;
ts_layer = dev->ts_layer;
ethnl_update_u32(&ts_layer, tb[ETHTOOL_A_TS_LAYER], &mod);
if (!mod)
return 0;
if (ts_layer == SOFTWARE_TIMESTAMPING) {
struct ethtool_ts_info ts_info = {0};
if (!ops->get_ts_info) {
NL_SET_ERR_MSG_ATTR(info->extack,
tb[ETHTOOL_A_TS_LAYER],
"this net device cannot support timestamping");
return -EINVAL;
}
ops->get_ts_info(dev, &ts_info);
if ((ts_info.so_timestamping &
SOF_TIMESTAMPING_SOFTWARE_MASK) !=
SOF_TIMESTAMPING_SOFTWARE_MASK) {
NL_SET_ERR_MSG_ATTR(info->extack,
tb[ETHTOOL_A_TS_LAYER],
"this net device cannot support software timestamping");
return -EINVAL;
}
} else if (ts_layer == MAC_TIMESTAMPING) {
struct ethtool_ts_info ts_info = {0};
if (!ops->get_ts_info) {
NL_SET_ERR_MSG_ATTR(info->extack,
tb[ETHTOOL_A_TS_LAYER],
"this net device cannot support timestamping");
return -EINVAL;
}
ops->get_ts_info(dev, &ts_info);
if ((ts_info.so_timestamping &
SOF_TIMESTAMPING_HARDWARE_MASK) !=
SOF_TIMESTAMPING_HARDWARE_MASK) {
NL_SET_ERR_MSG_ATTR(info->extack,
tb[ETHTOOL_A_TS_LAYER],
"this net device cannot support hardware timestamping");
return -EINVAL;
}
} else if (ts_layer == PHY_TIMESTAMPING && !phy_has_tsinfo(dev->phydev)) {
NL_SET_ERR_MSG_ATTR(info->extack, tb[ETHTOOL_A_TS_LAYER],
"this phy device cannot support timestamping");
return -EINVAL;
}
/* Disable time stamping in the current layer. */
if (netif_device_present(dev) &&
(dev->ts_layer == PHY_TIMESTAMPING ||
dev->ts_layer == MAC_TIMESTAMPING)) {
ret = dev_set_hwtstamp_phylib(dev, &config, info->extack);
if (ret < 0)
return ret;
}
dev->ts_layer = ts_layer;
return 1;
}
const struct ethnl_request_ops ethnl_ts_request_ops = {
.request_cmd = ETHTOOL_MSG_TS_GET,
.reply_cmd = ETHTOOL_MSG_TS_GET_REPLY,
.hdr_attr = ETHTOOL_A_TS_HEADER,
.req_info_size = sizeof(struct ts_req_info),
.reply_data_size = sizeof(struct ts_reply_data),
.prepare_data = ts_prepare_data,
.reply_size = ts_reply_size,
.fill_reply = ts_fill_reply,
.set_validate = ethnl_set_ts_validate,
.set = ethnl_set_ts,
};
/* TS_LIST_GET */
struct ts_list_reply_data {
struct ethnl_reply_data base;
enum timestamping_layer ts_layer[__TIMESTAMPING_COUNT];
u8 num_ts;
};
#define TS_LIST_REPDATA(__reply_base) \
container_of(__reply_base, struct ts_list_reply_data, base)
static int ts_list_prepare_data(const struct ethnl_req_info *req_base,
struct ethnl_reply_data *reply_base,
const struct genl_info *info)
{
struct ts_list_reply_data *data = TS_LIST_REPDATA(reply_base);
struct net_device *dev = reply_base->dev;
const struct ethtool_ops *ops = dev->ethtool_ops;
int ret, i = 0;
ret = ethnl_ops_begin(dev);
if (ret < 0)
return ret;
if (phy_has_tsinfo(dev->phydev))
data->ts_layer[i++] = PHY_TIMESTAMPING;
if (ops->get_ts_info) {
struct ethtool_ts_info ts_info = {0};
ops->get_ts_info(dev, &ts_info);
if (ts_info.so_timestamping &
SOF_TIMESTAMPING_HARDWARE_MASK)
data->ts_layer[i++] = MAC_TIMESTAMPING;
if (ts_info.so_timestamping &
SOF_TIMESTAMPING_SOFTWARE_MASK)
data->ts_layer[i++] = SOFTWARE_TIMESTAMPING;
}
data->num_ts = i;
ethnl_ops_complete(dev);
return ret;
}
static int ts_list_reply_size(const struct ethnl_req_info *req_base,
const struct ethnl_reply_data *reply_base)
{
struct ts_list_reply_data *data = TS_LIST_REPDATA(reply_base);
return nla_total_size(sizeof(u32)) * data->num_ts;
}
static int ts_list_fill_reply(struct sk_buff *skb,
const struct ethnl_req_info *req_base,
const struct ethnl_reply_data *reply_base)
{
struct ts_list_reply_data *data = TS_LIST_REPDATA(reply_base);
return nla_put(skb, ETHTOOL_A_TS_LIST_LAYER, sizeof(u32) * data->num_ts, data->ts_layer);
}
const struct ethnl_request_ops ethnl_ts_list_request_ops = {
.request_cmd = ETHTOOL_MSG_TS_LIST_GET,
.reply_cmd = ETHTOOL_MSG_TS_LIST_GET_REPLY,
.hdr_attr = ETHTOOL_A_TS_HEADER,
.req_info_size = sizeof(struct ts_req_info),
.reply_data_size = sizeof(struct ts_list_reply_data),
.prepare_data = ts_list_prepare_data,
.reply_size = ts_list_reply_size,
.fill_reply = ts_list_fill_reply,
};
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