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1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | ||
3 | #include <linux/net_tstamp.h> | |
4 | ||
5 | #include "netlink.h" | |
6 | #include "common.h" | |
7 | #include "bitset.h" | |
8 | ||
9 | struct tsinfo_req_info { | |
10 | struct ethnl_req_info base; | |
11 | }; | |
12 | ||
13 | struct tsinfo_reply_data { | |
14 | struct ethnl_reply_data base; | |
15 | struct ethtool_ts_info ts_info; | |
16 | }; | |
17 | ||
18 | #define TSINFO_REPDATA(__reply_base) \ | |
19 | container_of(__reply_base, struct tsinfo_reply_data, base) | |
20 | ||
ff419afa | 21 | const struct nla_policy ethnl_tsinfo_get_policy[] = { |
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22 | [ETHTOOL_A_TSINFO_HEADER] = |
23 | NLA_POLICY_NESTED(ethnl_header_policy), | |
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24 | }; |
25 | ||
26 | static int tsinfo_prepare_data(const struct ethnl_req_info *req_base, | |
27 | struct ethnl_reply_data *reply_base, | |
28 | struct genl_info *info) | |
29 | { | |
30 | struct tsinfo_reply_data *data = TSINFO_REPDATA(reply_base); | |
31 | struct net_device *dev = reply_base->dev; | |
32 | int ret; | |
33 | ||
34 | ret = ethnl_ops_begin(dev); | |
35 | if (ret < 0) | |
36 | return ret; | |
37 | ret = __ethtool_get_ts_info(dev, &data->ts_info); | |
38 | ethnl_ops_complete(dev); | |
39 | ||
40 | return ret; | |
41 | } | |
42 | ||
43 | static int tsinfo_reply_size(const struct ethnl_req_info *req_base, | |
44 | const struct ethnl_reply_data *reply_base) | |
45 | { | |
46 | const struct tsinfo_reply_data *data = TSINFO_REPDATA(reply_base); | |
47 | bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS; | |
48 | const struct ethtool_ts_info *ts_info = &data->ts_info; | |
49 | int len = 0; | |
50 | int ret; | |
51 | ||
52 | BUILD_BUG_ON(__SOF_TIMESTAMPING_CNT > 32); | |
53 | BUILD_BUG_ON(__HWTSTAMP_TX_CNT > 32); | |
54 | BUILD_BUG_ON(__HWTSTAMP_FILTER_CNT > 32); | |
55 | ||
56 | if (ts_info->so_timestamping) { | |
57 | ret = ethnl_bitset32_size(&ts_info->so_timestamping, NULL, | |
58 | __SOF_TIMESTAMPING_CNT, | |
59 | sof_timestamping_names, compact); | |
60 | if (ret < 0) | |
61 | return ret; | |
62 | len += ret; /* _TSINFO_TIMESTAMPING */ | |
63 | } | |
64 | if (ts_info->tx_types) { | |
65 | ret = ethnl_bitset32_size(&ts_info->tx_types, NULL, | |
66 | __HWTSTAMP_TX_CNT, | |
67 | ts_tx_type_names, compact); | |
68 | if (ret < 0) | |
69 | return ret; | |
70 | len += ret; /* _TSINFO_TX_TYPES */ | |
71 | } | |
72 | if (ts_info->rx_filters) { | |
73 | ret = ethnl_bitset32_size(&ts_info->rx_filters, NULL, | |
74 | __HWTSTAMP_FILTER_CNT, | |
75 | ts_rx_filter_names, compact); | |
76 | if (ret < 0) | |
77 | return ret; | |
78 | len += ret; /* _TSINFO_RX_FILTERS */ | |
79 | } | |
80 | if (ts_info->phc_index >= 0) | |
81 | len += nla_total_size(sizeof(u32)); /* _TSINFO_PHC_INDEX */ | |
82 | ||
83 | return len; | |
84 | } | |
85 | ||
86 | static int tsinfo_fill_reply(struct sk_buff *skb, | |
87 | const struct ethnl_req_info *req_base, | |
88 | const struct ethnl_reply_data *reply_base) | |
89 | { | |
90 | const struct tsinfo_reply_data *data = TSINFO_REPDATA(reply_base); | |
91 | bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS; | |
92 | const struct ethtool_ts_info *ts_info = &data->ts_info; | |
93 | int ret; | |
94 | ||
95 | if (ts_info->so_timestamping) { | |
96 | ret = ethnl_put_bitset32(skb, ETHTOOL_A_TSINFO_TIMESTAMPING, | |
97 | &ts_info->so_timestamping, NULL, | |
98 | __SOF_TIMESTAMPING_CNT, | |
99 | sof_timestamping_names, compact); | |
100 | if (ret < 0) | |
101 | return ret; | |
102 | } | |
103 | if (ts_info->tx_types) { | |
104 | ret = ethnl_put_bitset32(skb, ETHTOOL_A_TSINFO_TX_TYPES, | |
105 | &ts_info->tx_types, NULL, | |
106 | __HWTSTAMP_TX_CNT, | |
107 | ts_tx_type_names, compact); | |
108 | if (ret < 0) | |
109 | return ret; | |
110 | } | |
111 | if (ts_info->rx_filters) { | |
112 | ret = ethnl_put_bitset32(skb, ETHTOOL_A_TSINFO_RX_FILTERS, | |
113 | &ts_info->rx_filters, NULL, | |
114 | __HWTSTAMP_FILTER_CNT, | |
115 | ts_rx_filter_names, compact); | |
116 | if (ret < 0) | |
117 | return ret; | |
118 | } | |
119 | if (ts_info->phc_index >= 0 && | |
120 | nla_put_u32(skb, ETHTOOL_A_TSINFO_PHC_INDEX, ts_info->phc_index)) | |
121 | return -EMSGSIZE; | |
122 | ||
123 | return 0; | |
124 | } | |
125 | ||
126 | const struct ethnl_request_ops ethnl_tsinfo_request_ops = { | |
127 | .request_cmd = ETHTOOL_MSG_TSINFO_GET, | |
128 | .reply_cmd = ETHTOOL_MSG_TSINFO_GET_REPLY, | |
129 | .hdr_attr = ETHTOOL_A_TSINFO_HEADER, | |
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130 | .req_info_size = sizeof(struct tsinfo_req_info), |
131 | .reply_data_size = sizeof(struct tsinfo_reply_data), | |
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132 | |
133 | .prepare_data = tsinfo_prepare_data, | |
134 | .reply_size = tsinfo_reply_size, | |
135 | .fill_reply = tsinfo_fill_reply, | |
136 | }; |