diff options
Diffstat (limited to 'net/ethtool/tsinfo.c')
| -rw-r--r-- | net/ethtool/tsinfo.c | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/net/ethtool/tsinfo.c b/net/ethtool/tsinfo.c new file mode 100644 index 000000000000..7cb5b512b77c --- /dev/null +++ b/net/ethtool/tsinfo.c @@ -0,0 +1,143 @@ +// 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) + +static const struct nla_policy +tsinfo_get_policy[ETHTOOL_A_TSINFO_MAX + 1] = { + [ETHTOOL_A_TSINFO_UNSPEC] = { .type = NLA_REJECT }, + [ETHTOOL_A_TSINFO_HEADER] = { .type = NLA_NESTED }, + [ETHTOOL_A_TSINFO_TIMESTAMPING] = { .type = NLA_REJECT }, + [ETHTOOL_A_TSINFO_TX_TYPES] = { .type = NLA_REJECT }, + [ETHTOOL_A_TSINFO_RX_FILTERS] = { .type = NLA_REJECT }, + [ETHTOOL_A_TSINFO_PHC_INDEX] = { .type = NLA_REJECT }, +}; + +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, + .max_attr = ETHTOOL_A_TSINFO_MAX, + .req_info_size = sizeof(struct tsinfo_req_info), + .reply_data_size = sizeof(struct tsinfo_reply_data), + .request_policy = tsinfo_get_policy, + + .prepare_data = tsinfo_prepare_data, + .reply_size = tsinfo_reply_size, + .fill_reply = tsinfo_fill_reply, +}; |