1 // SPDX-License-Identifier: GPL-2.0-only
2
3 #include "netlink.h"
4 #include "common.h"
5 #include "bitset.h"
6
7 struct eee_req_info {
8 struct ethnl_req_info base;
9 };
10
11 struct eee_reply_data {
12 struct ethnl_reply_data base;
13 struct ethtool_keee eee;
14 };
15
16 #define EEE_REPDATA(__reply_base) \
17 container_of(__reply_base, struct eee_reply_data, base)
18
19 const struct nla_policy ethnl_eee_get_policy[] = {
20 [ETHTOOL_A_EEE_HEADER] =
21 NLA_POLICY_NESTED(ethnl_header_policy),
22 };
23
24 static int eee_prepare_data(const struct ethnl_req_info *req_base,
25 struct ethnl_reply_data *reply_base,
26 const struct genl_info *info)
27 {
28 struct eee_reply_data *data = EEE_REPDATA(reply_base);
29 struct net_device *dev = reply_base->dev;
30 struct ethtool_keee *eee = &data->eee;
31 int ret;
32
33 if (!dev->ethtool_ops->get_eee)
34 return -EOPNOTSUPP;
35 ret = ethnl_ops_begin(dev);
36 if (ret < 0)
37 return ret;
38 ret = dev->ethtool_ops->get_eee(dev, eee);
39 ethnl_ops_complete(dev);
40
41 return ret;
42 }
43
44 static int eee_reply_size(const struct ethnl_req_info *req_base,
45 const struct ethnl_reply_data *reply_base)
46 {
47 bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS;
48 const struct eee_reply_data *data = EEE_REPDATA(reply_base);
49 const struct ethtool_keee *eee = &data->eee;
50 int len = 0;
51 int ret;
52
53 /* MODES_OURS */
54 ret = ethnl_bitset_size(eee->advertised, eee->supported,
55 __ETHTOOL_LINK_MODE_MASK_NBITS,
56 link_mode_names, compact);
57 if (ret < 0)
58 return ret;
59 len += ret;
60 /* MODES_PEERS */
61 ret = ethnl_bitset_size(eee->lp_advertised, NULL,
62 __ETHTOOL_LINK_MODE_MASK_NBITS,
63 link_mode_names, compact);
64 if (ret < 0)
65 return ret;
66 len += ret;
67
68 len += nla_total_size(sizeof(u8)) + /* _EEE_ACTIVE */
69 nla_total_size(sizeof(u8)) + /* _EEE_ENABLED */
70 nla_total_size(sizeof(u8)) + /* _EEE_TX_LPI_ENABLED */
71 nla_total_size(sizeof(u32)); /* _EEE_TX_LPI_TIMER */
72
73 return len;
74 }
75
76 static int eee_fill_reply(struct sk_buff *skb,
77 const struct ethnl_req_info *req_base,
78 const struct ethnl_reply_data *reply_base)
79 {
80 bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS;
81 const struct eee_reply_data *data = EEE_REPDATA(reply_base);
82 const struct ethtool_keee *eee = &data->eee;
83 int ret;
84
85 ret = ethnl_put_bitset(skb, ETHTOOL_A_EEE_MODES_OURS,
86 eee->advertised, eee->supported,
87 __ETHTOOL_LINK_MODE_MASK_NBITS,
88 link_mode_names, compact);
89 if (ret < 0)
90 return ret;
91 ret = ethnl_put_bitset(skb, ETHTOOL_A_EEE_MODES_PEER,
92 eee->lp_advertised, NULL,
93 __ETHTOOL_LINK_MODE_MASK_NBITS,
94 link_mode_names, compact);
95 if (ret < 0)
96 return ret;
97
98 if (nla_put_u8(skb, ETHTOOL_A_EEE_ACTIVE, eee->eee_active) ||
99 nla_put_u8(skb, ETHTOOL_A_EEE_ENABLED, eee->eee_enabled) ||
100 nla_put_u8(skb, ETHTOOL_A_EEE_TX_LPI_ENABLED,
101 eee->tx_lpi_enabled) ||
102 nla_put_u32(skb, ETHTOOL_A_EEE_TX_LPI_TIMER, eee->tx_lpi_timer))
103 return -EMSGSIZE;
104
105 return 0;
106 }
107
108 /* EEE_SET */
109
110 const struct nla_policy ethnl_eee_set_policy[] = {
111 [ETHTOOL_A_EEE_HEADER] =
112 NLA_POLICY_NESTED(ethnl_header_policy),
113 [ETHTOOL_A_EEE_MODES_OURS] = { .type = NLA_NESTED },
114 [ETHTOOL_A_EEE_ENABLED] = { .type = NLA_U8 },
115 [ETHTOOL_A_EEE_TX_LPI_ENABLED] = { .type = NLA_U8 },
116 [ETHTOOL_A_EEE_TX_LPI_TIMER] = { .type = NLA_U32 },
117 };
118
119 static int
120 ethnl_set_eee_validate(struct ethnl_req_info *req_info, struct genl_info *info)
121 {
122 const struct ethtool_ops *ops = req_info->dev->ethtool_ops;
123
124 return ops->get_eee && ops->set_eee ? 1 : -EOPNOTSUPP;
125 }
126
127 static int
128 ethnl_set_eee(struct ethnl_req_info *req_info, struct genl_info *info)
129 {
130 struct net_device *dev = req_info->dev;
131 struct nlattr **tb = info->attrs;
132 struct ethtool_keee eee = {};
133 bool mod = false;
134 int ret;
135
136 ret = dev->ethtool_ops->get_eee(dev, &eee);
137 if (ret < 0)
138 return ret;
139
140 ret = ethnl_update_bitset(eee.advertised,
141 __ETHTOOL_LINK_MODE_MASK_NBITS,
142 tb[ETHTOOL_A_EEE_MODES_OURS],
143 link_mode_names, info->extack, &mod);
144 if (ret < 0)
145 return ret;
146 ethnl_update_bool(&eee.eee_enabled, tb[ETHTOOL_A_EEE_ENABLED], &mod);
147 ethnl_update_bool(&eee.tx_lpi_enabled, tb[ETHTOOL_A_EEE_TX_LPI_ENABLED],
148 &mod);
149 ethnl_update_u32(&eee.tx_lpi_timer, tb[ETHTOOL_A_EEE_TX_LPI_TIMER],
150 &mod);
151 if (!mod)
152 return 0;
153
154 ret = dev->ethtool_ops->set_eee(dev, &eee);
155 return ret < 0 ? ret : 1;
156 }
157
158 const struct ethnl_request_ops ethnl_eee_request_ops = {
159 .request_cmd = ETHTOOL_MSG_EEE_GET,
160 .reply_cmd = ETHTOOL_MSG_EEE_GET_REPLY,
161 .hdr_attr = ETHTOOL_A_EEE_HEADER,
162 .req_info_size = sizeof(struct eee_req_info),
163 .reply_data_size = sizeof(struct eee_reply_data),
164
165 .prepare_data = eee_prepare_data,
166 .reply_size = eee_reply_size,
167 .fill_reply = eee_fill_reply,
168
169 .set_validate = ethnl_set_eee_validate,
170 .set = ethnl_set_eee,
171 .set_ntf_cmd = ETHTOOL_MSG_EEE_NTF,
172 };
173
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