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1// SPDX-License-Identifier: GPL-2.0-only
2
3#include "netlink.h"
4#include "common.h"
5#include <linux/phy.h>
6
7struct linkstate_req_info {
8 struct ethnl_req_info base;
9};
10
11struct linkstate_reply_data {
12 struct ethnl_reply_data base;
13 int link;
14 int sqi;
15 int sqi_max;
16 bool link_ext_state_provided;
17 struct ethtool_link_ext_state_info ethtool_link_ext_state_info;
18};
19
20#define LINKSTATE_REPDATA(__reply_base) \
21 container_of(__reply_base, struct linkstate_reply_data, base)
22
23const struct nla_policy ethnl_linkstate_get_policy[] = {
24 [ETHTOOL_A_LINKSTATE_HEADER] =
25 NLA_POLICY_NESTED(ethnl_header_policy),
26};
27
28static int linkstate_get_sqi(struct net_device *dev)
29{
30 struct phy_device *phydev = dev->phydev;
31 int ret;
32
33 if (!phydev)
34 return -EOPNOTSUPP;
35
36 mutex_lock(&phydev->lock);
37 if (!phydev->drv || !phydev->drv->get_sqi)
38 ret = -EOPNOTSUPP;
39 else
40 ret = phydev->drv->get_sqi(phydev);
41 mutex_unlock(&phydev->lock);
42
43 return ret;
44}
45
46static int linkstate_get_sqi_max(struct net_device *dev)
47{
48 struct phy_device *phydev = dev->phydev;
49 int ret;
50
51 if (!phydev)
52 return -EOPNOTSUPP;
53
54 mutex_lock(&phydev->lock);
55 if (!phydev->drv || !phydev->drv->get_sqi_max)
56 ret = -EOPNOTSUPP;
57 else
58 ret = phydev->drv->get_sqi_max(phydev);
59 mutex_unlock(&phydev->lock);
60
61 return ret;
62};
63
64static int linkstate_get_link_ext_state(struct net_device *dev,
65 struct linkstate_reply_data *data)
66{
67 int err;
68
69 if (!dev->ethtool_ops->get_link_ext_state)
70 return -EOPNOTSUPP;
71
72 err = dev->ethtool_ops->get_link_ext_state(dev, &data->ethtool_link_ext_state_info);
73 if (err)
74 return err;
75
76 data->link_ext_state_provided = true;
77
78 return 0;
79}
80
81static int linkstate_prepare_data(const struct ethnl_req_info *req_base,
82 struct ethnl_reply_data *reply_base,
83 struct genl_info *info)
84{
85 struct linkstate_reply_data *data = LINKSTATE_REPDATA(reply_base);
86 struct net_device *dev = reply_base->dev;
87 int ret;
88
89 ret = ethnl_ops_begin(dev);
90 if (ret < 0)
91 return ret;
92 data->link = __ethtool_get_link(dev);
93
94 ret = linkstate_get_sqi(dev);
95 if (ret < 0 && ret != -EOPNOTSUPP)
96 goto out;
97 data->sqi = ret;
98
99 ret = linkstate_get_sqi_max(dev);
100 if (ret < 0 && ret != -EOPNOTSUPP)
101 goto out;
102 data->sqi_max = ret;
103
104 if (dev->flags & IFF_UP) {
105 ret = linkstate_get_link_ext_state(dev, data);
106 if (ret < 0 && ret != -EOPNOTSUPP && ret != -ENODATA)
107 goto out;
108 }
109
110 ret = 0;
111out:
112 ethnl_ops_complete(dev);
113 return ret;
114}
115
116static int linkstate_reply_size(const struct ethnl_req_info *req_base,
117 const struct ethnl_reply_data *reply_base)
118{
119 struct linkstate_reply_data *data = LINKSTATE_REPDATA(reply_base);
120 int len;
121
122 len = nla_total_size(sizeof(u8)) /* LINKSTATE_LINK */
123 + 0;
124
125 if (data->sqi != -EOPNOTSUPP)
126 len += nla_total_size(sizeof(u32));
127
128 if (data->sqi_max != -EOPNOTSUPP)
129 len += nla_total_size(sizeof(u32));
130
131 if (data->link_ext_state_provided)
132 len += nla_total_size(sizeof(u8)); /* LINKSTATE_EXT_STATE */
133
134 if (data->ethtool_link_ext_state_info.__link_ext_substate)
135 len += nla_total_size(sizeof(u8)); /* LINKSTATE_EXT_SUBSTATE */
136
137 return len;
138}
139
140static int linkstate_fill_reply(struct sk_buff *skb,
141 const struct ethnl_req_info *req_base,
142 const struct ethnl_reply_data *reply_base)
143{
144 struct linkstate_reply_data *data = LINKSTATE_REPDATA(reply_base);
145
146 if (data->link >= 0 &&
147 nla_put_u8(skb, ETHTOOL_A_LINKSTATE_LINK, !!data->link))
148 return -EMSGSIZE;
149
150 if (data->sqi != -EOPNOTSUPP &&
151 nla_put_u32(skb, ETHTOOL_A_LINKSTATE_SQI, data->sqi))
152 return -EMSGSIZE;
153
154 if (data->sqi_max != -EOPNOTSUPP &&
155 nla_put_u32(skb, ETHTOOL_A_LINKSTATE_SQI_MAX, data->sqi_max))
156 return -EMSGSIZE;
157
158 if (data->link_ext_state_provided) {
159 if (nla_put_u8(skb, ETHTOOL_A_LINKSTATE_EXT_STATE,
160 data->ethtool_link_ext_state_info.link_ext_state))
161 return -EMSGSIZE;
162
163 if (data->ethtool_link_ext_state_info.__link_ext_substate &&
164 nla_put_u8(skb, ETHTOOL_A_LINKSTATE_EXT_SUBSTATE,
165 data->ethtool_link_ext_state_info.__link_ext_substate))
166 return -EMSGSIZE;
167 }
168
169 return 0;
170}
171
172const struct ethnl_request_ops ethnl_linkstate_request_ops = {
173 .request_cmd = ETHTOOL_MSG_LINKSTATE_GET,
174 .reply_cmd = ETHTOOL_MSG_LINKSTATE_GET_REPLY,
175 .hdr_attr = ETHTOOL_A_LINKSTATE_HEADER,
176 .req_info_size = sizeof(struct linkstate_req_info),
177 .reply_data_size = sizeof(struct linkstate_reply_data),
178
179 .prepare_data = linkstate_prepare_data,
180 .reply_size = linkstate_reply_size,
181 .fill_reply = linkstate_fill_reply,
182};
1// SPDX-License-Identifier: GPL-2.0-only
2
3#include "netlink.h"
4#include "common.h"
5#include <linux/phy.h>
6
7struct linkstate_req_info {
8 struct ethnl_req_info base;
9};
10
11struct linkstate_reply_data {
12 struct ethnl_reply_data base;
13 int link;
14 int sqi;
15 int sqi_max;
16 struct ethtool_link_ext_stats link_stats;
17 bool link_ext_state_provided;
18 struct ethtool_link_ext_state_info ethtool_link_ext_state_info;
19};
20
21#define LINKSTATE_REPDATA(__reply_base) \
22 container_of(__reply_base, struct linkstate_reply_data, base)
23
24const struct nla_policy ethnl_linkstate_get_policy[] = {
25 [ETHTOOL_A_LINKSTATE_HEADER] =
26 NLA_POLICY_NESTED(ethnl_header_policy_stats),
27};
28
29static int linkstate_get_sqi(struct net_device *dev)
30{
31 struct phy_device *phydev = dev->phydev;
32 int ret;
33
34 if (!phydev)
35 return -EOPNOTSUPP;
36
37 mutex_lock(&phydev->lock);
38 if (!phydev->drv || !phydev->drv->get_sqi)
39 ret = -EOPNOTSUPP;
40 else
41 ret = phydev->drv->get_sqi(phydev);
42 mutex_unlock(&phydev->lock);
43
44 return ret;
45}
46
47static int linkstate_get_sqi_max(struct net_device *dev)
48{
49 struct phy_device *phydev = dev->phydev;
50 int ret;
51
52 if (!phydev)
53 return -EOPNOTSUPP;
54
55 mutex_lock(&phydev->lock);
56 if (!phydev->drv || !phydev->drv->get_sqi_max)
57 ret = -EOPNOTSUPP;
58 else
59 ret = phydev->drv->get_sqi_max(phydev);
60 mutex_unlock(&phydev->lock);
61
62 return ret;
63};
64
65static int linkstate_get_link_ext_state(struct net_device *dev,
66 struct linkstate_reply_data *data)
67{
68 int err;
69
70 if (!dev->ethtool_ops->get_link_ext_state)
71 return -EOPNOTSUPP;
72
73 err = dev->ethtool_ops->get_link_ext_state(dev, &data->ethtool_link_ext_state_info);
74 if (err)
75 return err;
76
77 data->link_ext_state_provided = true;
78
79 return 0;
80}
81
82static int linkstate_prepare_data(const struct ethnl_req_info *req_base,
83 struct ethnl_reply_data *reply_base,
84 struct genl_info *info)
85{
86 struct linkstate_reply_data *data = LINKSTATE_REPDATA(reply_base);
87 struct net_device *dev = reply_base->dev;
88 int ret;
89
90 ret = ethnl_ops_begin(dev);
91 if (ret < 0)
92 return ret;
93 data->link = __ethtool_get_link(dev);
94
95 ret = linkstate_get_sqi(dev);
96 if (ret < 0 && ret != -EOPNOTSUPP)
97 goto out;
98 data->sqi = ret;
99
100 ret = linkstate_get_sqi_max(dev);
101 if (ret < 0 && ret != -EOPNOTSUPP)
102 goto out;
103 data->sqi_max = ret;
104
105 if (dev->flags & IFF_UP) {
106 ret = linkstate_get_link_ext_state(dev, data);
107 if (ret < 0 && ret != -EOPNOTSUPP && ret != -ENODATA)
108 goto out;
109 }
110
111 ethtool_stats_init((u64 *)&data->link_stats,
112 sizeof(data->link_stats) / 8);
113
114 if (req_base->flags & ETHTOOL_FLAG_STATS) {
115 if (dev->phydev)
116 data->link_stats.link_down_events =
117 READ_ONCE(dev->phydev->link_down_events);
118
119 if (dev->ethtool_ops->get_link_ext_stats)
120 dev->ethtool_ops->get_link_ext_stats(dev,
121 &data->link_stats);
122 }
123
124 ret = 0;
125out:
126 ethnl_ops_complete(dev);
127 return ret;
128}
129
130static int linkstate_reply_size(const struct ethnl_req_info *req_base,
131 const struct ethnl_reply_data *reply_base)
132{
133 struct linkstate_reply_data *data = LINKSTATE_REPDATA(reply_base);
134 int len;
135
136 len = nla_total_size(sizeof(u8)) /* LINKSTATE_LINK */
137 + 0;
138
139 if (data->sqi != -EOPNOTSUPP)
140 len += nla_total_size(sizeof(u32));
141
142 if (data->sqi_max != -EOPNOTSUPP)
143 len += nla_total_size(sizeof(u32));
144
145 if (data->link_ext_state_provided)
146 len += nla_total_size(sizeof(u8)); /* LINKSTATE_EXT_STATE */
147
148 if (data->ethtool_link_ext_state_info.__link_ext_substate)
149 len += nla_total_size(sizeof(u8)); /* LINKSTATE_EXT_SUBSTATE */
150
151 if (data->link_stats.link_down_events != ETHTOOL_STAT_NOT_SET)
152 len += nla_total_size(sizeof(u32));
153
154 return len;
155}
156
157static int linkstate_fill_reply(struct sk_buff *skb,
158 const struct ethnl_req_info *req_base,
159 const struct ethnl_reply_data *reply_base)
160{
161 struct linkstate_reply_data *data = LINKSTATE_REPDATA(reply_base);
162
163 if (data->link >= 0 &&
164 nla_put_u8(skb, ETHTOOL_A_LINKSTATE_LINK, !!data->link))
165 return -EMSGSIZE;
166
167 if (data->sqi != -EOPNOTSUPP &&
168 nla_put_u32(skb, ETHTOOL_A_LINKSTATE_SQI, data->sqi))
169 return -EMSGSIZE;
170
171 if (data->sqi_max != -EOPNOTSUPP &&
172 nla_put_u32(skb, ETHTOOL_A_LINKSTATE_SQI_MAX, data->sqi_max))
173 return -EMSGSIZE;
174
175 if (data->link_ext_state_provided) {
176 if (nla_put_u8(skb, ETHTOOL_A_LINKSTATE_EXT_STATE,
177 data->ethtool_link_ext_state_info.link_ext_state))
178 return -EMSGSIZE;
179
180 if (data->ethtool_link_ext_state_info.__link_ext_substate &&
181 nla_put_u8(skb, ETHTOOL_A_LINKSTATE_EXT_SUBSTATE,
182 data->ethtool_link_ext_state_info.__link_ext_substate))
183 return -EMSGSIZE;
184 }
185
186 if (data->link_stats.link_down_events != ETHTOOL_STAT_NOT_SET)
187 if (nla_put_u32(skb, ETHTOOL_A_LINKSTATE_EXT_DOWN_CNT,
188 data->link_stats.link_down_events))
189 return -EMSGSIZE;
190
191 return 0;
192}
193
194const struct ethnl_request_ops ethnl_linkstate_request_ops = {
195 .request_cmd = ETHTOOL_MSG_LINKSTATE_GET,
196 .reply_cmd = ETHTOOL_MSG_LINKSTATE_GET_REPLY,
197 .hdr_attr = ETHTOOL_A_LINKSTATE_HEADER,
198 .req_info_size = sizeof(struct linkstate_req_info),
199 .reply_data_size = sizeof(struct linkstate_reply_data),
200
201 .prepare_data = linkstate_prepare_data,
202 .reply_size = linkstate_reply_size,
203 .fill_reply = linkstate_fill_reply,
204};