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// SPDX-License-Identifier: GPL-2.0-only
#include <linux/net_tstamp.h>
#include "netlink.h"
#include "common.h"
#include "bitset.h"
struct tsinfo_req_info {
struct ethnl_req_info base;
};
struct tsinfo_reply_data {
struct ethnl_reply_data base;
struct kernel_ethtool_ts_info ts_info;
struct ethtool_ts_stats stats;
};
#define TSINFO_REPDATA(__reply_base) \
container_of(__reply_base, struct tsinfo_reply_data, base)
#define ETHTOOL_TS_STAT_CNT \
(__ETHTOOL_A_TS_STAT_CNT - (ETHTOOL_A_TS_STAT_UNSPEC + 1))
const struct nla_policy ethnl_tsinfo_get_policy[] = {
[ETHTOOL_A_TSINFO_HEADER] =
NLA_POLICY_NESTED(ethnl_header_policy_stats),
};
static int tsinfo_prepare_data(const struct ethnl_req_info *req_base,
struct ethnl_reply_data *reply_base,
const struct genl_info *info)
{
struct tsinfo_reply_data *data = TSINFO_REPDATA(reply_base);
struct net_device *dev = reply_base->dev;
int ret;
ret = ethnl_ops_begin(dev);
if (ret < 0)
return ret;
if (req_base->flags & ETHTOOL_FLAG_STATS) {
ethtool_stats_init((u64 *)&data->stats,
sizeof(data->stats) / sizeof(u64));
if (dev->ethtool_ops->get_ts_stats)
dev->ethtool_ops->get_ts_stats(dev, &data->stats);
}
ret = __ethtool_get_ts_info(dev, &data->ts_info);
ethnl_ops_complete(dev);
return ret;
}
static int tsinfo_reply_size(const struct ethnl_req_info *req_base,
const struct ethnl_reply_data *reply_base)
{
const struct tsinfo_reply_data *data = TSINFO_REPDATA(reply_base);
bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS;
const struct kernel_ethtool_ts_info *ts_info = &data->ts_info;
int len = 0;
int ret;
BUILD_BUG_ON(__SOF_TIMESTAMPING_CNT > 32);
BUILD_BUG_ON(__HWTSTAMP_TX_CNT > 32);
BUILD_BUG_ON(__HWTSTAMP_FILTER_CNT > 32);
if (ts_info->so_timestamping) {
ret = ethnl_bitset32_size(&ts_info->so_timestamping, NULL,
__SOF_TIMESTAMPING_CNT,
sof_timestamping_names, compact);
if (ret < 0)
return ret;
len += ret; /* _TSINFO_TIMESTAMPING */
}
if (ts_info->tx_types) {
ret = ethnl_bitset32_size(&ts_info->tx_types, NULL,
__HWTSTAMP_TX_CNT,
ts_tx_type_names, compact);
if (ret < 0)
return ret;
len += ret; /* _TSINFO_TX_TYPES */
}
if (ts_info->rx_filters) {
ret = ethnl_bitset32_size(&ts_info->rx_filters, NULL,
__HWTSTAMP_FILTER_CNT,
ts_rx_filter_names, compact);
if (ret < 0)
return ret;
len += ret; /* _TSINFO_RX_FILTERS */
}
if (ts_info->phc_index >= 0)
len += nla_total_size(sizeof(u32)); /* _TSINFO_PHC_INDEX */
if (req_base->flags & ETHTOOL_FLAG_STATS)
len += nla_total_size(0) + /* _TSINFO_STATS */
nla_total_size_64bit(sizeof(u64)) * ETHTOOL_TS_STAT_CNT;
return len;
}
static int tsinfo_put_stat(struct sk_buff *skb, u64 val, u16 attrtype)
{
if (val == ETHTOOL_STAT_NOT_SET)
return 0;
if (nla_put_uint(skb, attrtype, val))
return -EMSGSIZE;
return 0;
}
static int tsinfo_put_stats(struct sk_buff *skb,
const struct ethtool_ts_stats *stats)
{
struct nlattr *nest;
nest = nla_nest_start(skb, ETHTOOL_A_TSINFO_STATS);
if (!nest)
return -EMSGSIZE;
if (tsinfo_put_stat(skb, stats->tx_stats.pkts,
ETHTOOL_A_TS_STAT_TX_PKTS) ||
tsinfo_put_stat(skb, stats->tx_stats.lost,
ETHTOOL_A_TS_STAT_TX_LOST) ||
tsinfo_put_stat(skb, stats->tx_stats.err,
ETHTOOL_A_TS_STAT_TX_ERR))
goto err_cancel;
nla_nest_end(skb, nest);
return 0;
err_cancel:
nla_nest_cancel(skb, nest);
return -EMSGSIZE;
}
static int tsinfo_fill_reply(struct sk_buff *skb,
const struct ethnl_req_info *req_base,
const struct ethnl_reply_data *reply_base)
{
const struct tsinfo_reply_data *data = TSINFO_REPDATA(reply_base);
bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS;
const struct kernel_ethtool_ts_info *ts_info = &data->ts_info;
int ret;
if (ts_info->so_timestamping) {
ret = ethnl_put_bitset32(skb, ETHTOOL_A_TSINFO_TIMESTAMPING,
&ts_info->so_timestamping, NULL,
__SOF_TIMESTAMPING_CNT,
sof_timestamping_names, compact);
if (ret < 0)
return ret;
}
if (ts_info->tx_types) {
ret = ethnl_put_bitset32(skb, ETHTOOL_A_TSINFO_TX_TYPES,
&ts_info->tx_types, NULL,
__HWTSTAMP_TX_CNT,
ts_tx_type_names, compact);
if (ret < 0)
return ret;
}
if (ts_info->rx_filters) {
ret = ethnl_put_bitset32(skb, ETHTOOL_A_TSINFO_RX_FILTERS,
&ts_info->rx_filters, NULL,
__HWTSTAMP_FILTER_CNT,
ts_rx_filter_names, compact);
if (ret < 0)
return ret;
}
if (ts_info->phc_index >= 0 &&
nla_put_u32(skb, ETHTOOL_A_TSINFO_PHC_INDEX, ts_info->phc_index))
return -EMSGSIZE;
if (req_base->flags & ETHTOOL_FLAG_STATS &&
tsinfo_put_stats(skb, &data->stats))
return -EMSGSIZE;
return 0;
}
const struct ethnl_request_ops ethnl_tsinfo_request_ops = {
.request_cmd = ETHTOOL_MSG_TSINFO_GET,
.reply_cmd = ETHTOOL_MSG_TSINFO_GET_REPLY,
.hdr_attr = ETHTOOL_A_TSINFO_HEADER,
.req_info_size = sizeof(struct tsinfo_req_info),
.reply_data_size = sizeof(struct tsinfo_reply_data),
.prepare_data = tsinfo_prepare_data,
.reply_size = tsinfo_reply_size,
.fill_reply = tsinfo_fill_reply,
};
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