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1// SPDX-License-Identifier: GPL-2.0-only
2
3#include "netlink.h"
4#include "common.h"
5
6struct linkinfo_req_info {
7 struct ethnl_req_info base;
8};
9
10struct linkinfo_reply_data {
11 struct ethnl_reply_data base;
12 struct ethtool_link_ksettings ksettings;
13 struct ethtool_link_settings *lsettings;
14};
15
16#define LINKINFO_REPDATA(__reply_base) \
17 container_of(__reply_base, struct linkinfo_reply_data, base)
18
19const struct nla_policy ethnl_linkinfo_get_policy[] = {
20 [ETHTOOL_A_LINKINFO_HEADER] =
21 NLA_POLICY_NESTED(ethnl_header_policy),
22};
23
24static int linkinfo_prepare_data(const struct ethnl_req_info *req_base,
25 struct ethnl_reply_data *reply_base,
26 struct genl_info *info)
27{
28 struct linkinfo_reply_data *data = LINKINFO_REPDATA(reply_base);
29 struct net_device *dev = reply_base->dev;
30 int ret;
31
32 data->lsettings = &data->ksettings.base;
33
34 ret = ethnl_ops_begin(dev);
35 if (ret < 0)
36 return ret;
37 ret = __ethtool_get_link_ksettings(dev, &data->ksettings);
38 if (ret < 0 && info)
39 GENL_SET_ERR_MSG(info, "failed to retrieve link settings");
40 ethnl_ops_complete(dev);
41
42 return ret;
43}
44
45static int linkinfo_reply_size(const struct ethnl_req_info *req_base,
46 const struct ethnl_reply_data *reply_base)
47{
48 return nla_total_size(sizeof(u8)) /* LINKINFO_PORT */
49 + nla_total_size(sizeof(u8)) /* LINKINFO_PHYADDR */
50 + nla_total_size(sizeof(u8)) /* LINKINFO_TP_MDIX */
51 + nla_total_size(sizeof(u8)) /* LINKINFO_TP_MDIX_CTRL */
52 + nla_total_size(sizeof(u8)) /* LINKINFO_TRANSCEIVER */
53 + 0;
54}
55
56static int linkinfo_fill_reply(struct sk_buff *skb,
57 const struct ethnl_req_info *req_base,
58 const struct ethnl_reply_data *reply_base)
59{
60 const struct linkinfo_reply_data *data = LINKINFO_REPDATA(reply_base);
61
62 if (nla_put_u8(skb, ETHTOOL_A_LINKINFO_PORT, data->lsettings->port) ||
63 nla_put_u8(skb, ETHTOOL_A_LINKINFO_PHYADDR,
64 data->lsettings->phy_address) ||
65 nla_put_u8(skb, ETHTOOL_A_LINKINFO_TP_MDIX,
66 data->lsettings->eth_tp_mdix) ||
67 nla_put_u8(skb, ETHTOOL_A_LINKINFO_TP_MDIX_CTRL,
68 data->lsettings->eth_tp_mdix_ctrl) ||
69 nla_put_u8(skb, ETHTOOL_A_LINKINFO_TRANSCEIVER,
70 data->lsettings->transceiver))
71 return -EMSGSIZE;
72
73 return 0;
74}
75
76const struct ethnl_request_ops ethnl_linkinfo_request_ops = {
77 .request_cmd = ETHTOOL_MSG_LINKINFO_GET,
78 .reply_cmd = ETHTOOL_MSG_LINKINFO_GET_REPLY,
79 .hdr_attr = ETHTOOL_A_LINKINFO_HEADER,
80 .req_info_size = sizeof(struct linkinfo_req_info),
81 .reply_data_size = sizeof(struct linkinfo_reply_data),
82
83 .prepare_data = linkinfo_prepare_data,
84 .reply_size = linkinfo_reply_size,
85 .fill_reply = linkinfo_fill_reply,
86};
87
88/* LINKINFO_SET */
89
90const struct nla_policy ethnl_linkinfo_set_policy[] = {
91 [ETHTOOL_A_LINKINFO_HEADER] =
92 NLA_POLICY_NESTED(ethnl_header_policy),
93 [ETHTOOL_A_LINKINFO_PORT] = { .type = NLA_U8 },
94 [ETHTOOL_A_LINKINFO_PHYADDR] = { .type = NLA_U8 },
95 [ETHTOOL_A_LINKINFO_TP_MDIX_CTRL] = { .type = NLA_U8 },
96};
97
98int ethnl_set_linkinfo(struct sk_buff *skb, struct genl_info *info)
99{
100 struct ethtool_link_ksettings ksettings = {};
101 struct ethtool_link_settings *lsettings;
102 struct ethnl_req_info req_info = {};
103 struct nlattr **tb = info->attrs;
104 struct net_device *dev;
105 bool mod = false;
106 int ret;
107
108 ret = ethnl_parse_header_dev_get(&req_info,
109 tb[ETHTOOL_A_LINKINFO_HEADER],
110 genl_info_net(info), info->extack,
111 true);
112 if (ret < 0)
113 return ret;
114 dev = req_info.dev;
115 ret = -EOPNOTSUPP;
116 if (!dev->ethtool_ops->get_link_ksettings ||
117 !dev->ethtool_ops->set_link_ksettings)
118 goto out_dev;
119
120 rtnl_lock();
121 ret = ethnl_ops_begin(dev);
122 if (ret < 0)
123 goto out_rtnl;
124
125 ret = __ethtool_get_link_ksettings(dev, &ksettings);
126 if (ret < 0) {
127 GENL_SET_ERR_MSG(info, "failed to retrieve link settings");
128 goto out_ops;
129 }
130 lsettings = &ksettings.base;
131
132 ethnl_update_u8(&lsettings->port, tb[ETHTOOL_A_LINKINFO_PORT], &mod);
133 ethnl_update_u8(&lsettings->phy_address, tb[ETHTOOL_A_LINKINFO_PHYADDR],
134 &mod);
135 ethnl_update_u8(&lsettings->eth_tp_mdix_ctrl,
136 tb[ETHTOOL_A_LINKINFO_TP_MDIX_CTRL], &mod);
137 ret = 0;
138 if (!mod)
139 goto out_ops;
140
141 ret = dev->ethtool_ops->set_link_ksettings(dev, &ksettings);
142 if (ret < 0)
143 GENL_SET_ERR_MSG(info, "link settings update failed");
144 else
145 ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF, NULL);
146
147out_ops:
148 ethnl_ops_complete(dev);
149out_rtnl:
150 rtnl_unlock();
151out_dev:
152 dev_put(dev);
153 return ret;
154}
1// SPDX-License-Identifier: GPL-2.0-only
2
3#include "netlink.h"
4#include "common.h"
5
6struct linkinfo_req_info {
7 struct ethnl_req_info base;
8};
9
10struct linkinfo_reply_data {
11 struct ethnl_reply_data base;
12 struct ethtool_link_ksettings ksettings;
13 struct ethtool_link_settings *lsettings;
14};
15
16#define LINKINFO_REPDATA(__reply_base) \
17 container_of(__reply_base, struct linkinfo_reply_data, base)
18
19static const struct nla_policy
20linkinfo_get_policy[ETHTOOL_A_LINKINFO_MAX + 1] = {
21 [ETHTOOL_A_LINKINFO_UNSPEC] = { .type = NLA_REJECT },
22 [ETHTOOL_A_LINKINFO_HEADER] = { .type = NLA_NESTED },
23 [ETHTOOL_A_LINKINFO_PORT] = { .type = NLA_REJECT },
24 [ETHTOOL_A_LINKINFO_PHYADDR] = { .type = NLA_REJECT },
25 [ETHTOOL_A_LINKINFO_TP_MDIX] = { .type = NLA_REJECT },
26 [ETHTOOL_A_LINKINFO_TP_MDIX_CTRL] = { .type = NLA_REJECT },
27 [ETHTOOL_A_LINKINFO_TRANSCEIVER] = { .type = NLA_REJECT },
28};
29
30static int linkinfo_prepare_data(const struct ethnl_req_info *req_base,
31 struct ethnl_reply_data *reply_base,
32 struct genl_info *info)
33{
34 struct linkinfo_reply_data *data = LINKINFO_REPDATA(reply_base);
35 struct net_device *dev = reply_base->dev;
36 int ret;
37
38 data->lsettings = &data->ksettings.base;
39
40 ret = ethnl_ops_begin(dev);
41 if (ret < 0)
42 return ret;
43 ret = __ethtool_get_link_ksettings(dev, &data->ksettings);
44 if (ret < 0 && info)
45 GENL_SET_ERR_MSG(info, "failed to retrieve link settings");
46 ethnl_ops_complete(dev);
47
48 return ret;
49}
50
51static int linkinfo_reply_size(const struct ethnl_req_info *req_base,
52 const struct ethnl_reply_data *reply_base)
53{
54 return nla_total_size(sizeof(u8)) /* LINKINFO_PORT */
55 + nla_total_size(sizeof(u8)) /* LINKINFO_PHYADDR */
56 + nla_total_size(sizeof(u8)) /* LINKINFO_TP_MDIX */
57 + nla_total_size(sizeof(u8)) /* LINKINFO_TP_MDIX_CTRL */
58 + nla_total_size(sizeof(u8)) /* LINKINFO_TRANSCEIVER */
59 + 0;
60}
61
62static int linkinfo_fill_reply(struct sk_buff *skb,
63 const struct ethnl_req_info *req_base,
64 const struct ethnl_reply_data *reply_base)
65{
66 const struct linkinfo_reply_data *data = LINKINFO_REPDATA(reply_base);
67
68 if (nla_put_u8(skb, ETHTOOL_A_LINKINFO_PORT, data->lsettings->port) ||
69 nla_put_u8(skb, ETHTOOL_A_LINKINFO_PHYADDR,
70 data->lsettings->phy_address) ||
71 nla_put_u8(skb, ETHTOOL_A_LINKINFO_TP_MDIX,
72 data->lsettings->eth_tp_mdix) ||
73 nla_put_u8(skb, ETHTOOL_A_LINKINFO_TP_MDIX_CTRL,
74 data->lsettings->eth_tp_mdix_ctrl) ||
75 nla_put_u8(skb, ETHTOOL_A_LINKINFO_TRANSCEIVER,
76 data->lsettings->transceiver))
77 return -EMSGSIZE;
78
79 return 0;
80}
81
82const struct ethnl_request_ops ethnl_linkinfo_request_ops = {
83 .request_cmd = ETHTOOL_MSG_LINKINFO_GET,
84 .reply_cmd = ETHTOOL_MSG_LINKINFO_GET_REPLY,
85 .hdr_attr = ETHTOOL_A_LINKINFO_HEADER,
86 .max_attr = ETHTOOL_A_LINKINFO_MAX,
87 .req_info_size = sizeof(struct linkinfo_req_info),
88 .reply_data_size = sizeof(struct linkinfo_reply_data),
89 .request_policy = linkinfo_get_policy,
90
91 .prepare_data = linkinfo_prepare_data,
92 .reply_size = linkinfo_reply_size,
93 .fill_reply = linkinfo_fill_reply,
94};
95
96/* LINKINFO_SET */
97
98static const struct nla_policy
99linkinfo_set_policy[ETHTOOL_A_LINKINFO_MAX + 1] = {
100 [ETHTOOL_A_LINKINFO_UNSPEC] = { .type = NLA_REJECT },
101 [ETHTOOL_A_LINKINFO_HEADER] = { .type = NLA_NESTED },
102 [ETHTOOL_A_LINKINFO_PORT] = { .type = NLA_U8 },
103 [ETHTOOL_A_LINKINFO_PHYADDR] = { .type = NLA_U8 },
104 [ETHTOOL_A_LINKINFO_TP_MDIX] = { .type = NLA_REJECT },
105 [ETHTOOL_A_LINKINFO_TP_MDIX_CTRL] = { .type = NLA_U8 },
106 [ETHTOOL_A_LINKINFO_TRANSCEIVER] = { .type = NLA_REJECT },
107};
108
109int ethnl_set_linkinfo(struct sk_buff *skb, struct genl_info *info)
110{
111 struct nlattr *tb[ETHTOOL_A_LINKINFO_MAX + 1];
112 struct ethtool_link_ksettings ksettings = {};
113 struct ethtool_link_settings *lsettings;
114 struct ethnl_req_info req_info = {};
115 struct net_device *dev;
116 bool mod = false;
117 int ret;
118
119 ret = nlmsg_parse(info->nlhdr, GENL_HDRLEN, tb,
120 ETHTOOL_A_LINKINFO_MAX, linkinfo_set_policy,
121 info->extack);
122 if (ret < 0)
123 return ret;
124 ret = ethnl_parse_header_dev_get(&req_info,
125 tb[ETHTOOL_A_LINKINFO_HEADER],
126 genl_info_net(info), info->extack,
127 true);
128 if (ret < 0)
129 return ret;
130 dev = req_info.dev;
131 ret = -EOPNOTSUPP;
132 if (!dev->ethtool_ops->get_link_ksettings ||
133 !dev->ethtool_ops->set_link_ksettings)
134 goto out_dev;
135
136 rtnl_lock();
137 ret = ethnl_ops_begin(dev);
138 if (ret < 0)
139 goto out_rtnl;
140
141 ret = __ethtool_get_link_ksettings(dev, &ksettings);
142 if (ret < 0) {
143 GENL_SET_ERR_MSG(info, "failed to retrieve link settings");
144 goto out_ops;
145 }
146 lsettings = &ksettings.base;
147
148 ethnl_update_u8(&lsettings->port, tb[ETHTOOL_A_LINKINFO_PORT], &mod);
149 ethnl_update_u8(&lsettings->phy_address, tb[ETHTOOL_A_LINKINFO_PHYADDR],
150 &mod);
151 ethnl_update_u8(&lsettings->eth_tp_mdix_ctrl,
152 tb[ETHTOOL_A_LINKINFO_TP_MDIX_CTRL], &mod);
153 ret = 0;
154 if (!mod)
155 goto out_ops;
156
157 ret = dev->ethtool_ops->set_link_ksettings(dev, &ksettings);
158 if (ret < 0)
159 GENL_SET_ERR_MSG(info, "link settings update failed");
160 else
161 ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF, NULL);
162
163out_ops:
164 ethnl_ops_complete(dev);
165out_rtnl:
166 rtnl_unlock();
167out_dev:
168 dev_put(dev);
169 return ret;
170}