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-rw-r--r--net/ethtool/tsinfo.c136
1 files changed, 136 insertions, 0 deletions
diff --git a/net/ethtool/tsinfo.c b/net/ethtool/tsinfo.c
new file mode 100644
index 000000000..63b5814bd
--- /dev/null
+++ b/net/ethtool/tsinfo.c
@@ -0,0 +1,136 @@
+// 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 ethtool_ts_info ts_info;
+};
+
+#define TSINFO_REPDATA(__reply_base) \
+ container_of(__reply_base, struct tsinfo_reply_data, base)
+
+const struct nla_policy ethnl_tsinfo_get_policy[] = {
+ [ETHTOOL_A_TSINFO_HEADER] =
+ NLA_POLICY_NESTED(ethnl_header_policy),
+};
+
+static int tsinfo_prepare_data(const struct ethnl_req_info *req_base,
+ struct ethnl_reply_data *reply_base,
+ 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;
+ 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 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 */
+
+ return len;
+}
+
+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 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;
+
+ 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,
+};