]>
Commit | Line | Data |
---|---|---|
3d2b847f MK |
1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | ||
3 | #include "netlink.h" | |
4 | #include "common.h" | |
80660219 | 5 | #include <linux/phy.h> |
3d2b847f MK |
6 | |
7 | struct linkstate_req_info { | |
8 | struct ethnl_req_info base; | |
9 | }; | |
10 | ||
11 | struct linkstate_reply_data { | |
ecc31c60 AC |
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; | |
3d2b847f MK |
18 | }; |
19 | ||
20 | #define LINKSTATE_REPDATA(__reply_base) \ | |
21 | container_of(__reply_base, struct linkstate_reply_data, base) | |
22 | ||
ff419afa | 23 | const struct nla_policy ethnl_linkstate_get_policy[] = { |
329d9c33 JK |
24 | [ETHTOOL_A_LINKSTATE_HEADER] = |
25 | NLA_POLICY_NESTED(ethnl_header_policy), | |
3d2b847f MK |
26 | }; |
27 | ||
80660219 OR |
28 | static 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 | ||
46 | static 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; | |
ecc31c60 AC |
62 | }; |
63 | ||
64 | static 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; | |
80660219 OR |
79 | } |
80 | ||
3d2b847f MK |
81 | static 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); | |
80660219 OR |
93 | |
94 | ret = linkstate_get_sqi(dev); | |
95 | if (ret < 0 && ret != -EOPNOTSUPP) | |
1ae71d99 | 96 | goto out; |
80660219 OR |
97 | data->sqi = ret; |
98 | ||
99 | ret = linkstate_get_sqi_max(dev); | |
100 | if (ret < 0 && ret != -EOPNOTSUPP) | |
1ae71d99 | 101 | goto out; |
80660219 OR |
102 | data->sqi_max = ret; |
103 | ||
ecc31c60 AC |
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 | ||
1ae71d99 MK |
110 | ret = 0; |
111 | out: | |
3d2b847f | 112 | ethnl_ops_complete(dev); |
1ae71d99 | 113 | return ret; |
3d2b847f MK |
114 | } |
115 | ||
116 | static int linkstate_reply_size(const struct ethnl_req_info *req_base, | |
117 | const struct ethnl_reply_data *reply_base) | |
118 | { | |
80660219 OR |
119 | struct linkstate_reply_data *data = LINKSTATE_REPDATA(reply_base); |
120 | int len; | |
121 | ||
122 | len = nla_total_size(sizeof(u8)) /* LINKSTATE_LINK */ | |
3d2b847f | 123 | + 0; |
80660219 OR |
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 | ||
ecc31c60 AC |
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 | ||
80660219 | 137 | return len; |
3d2b847f MK |
138 | } |
139 | ||
140 | static 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 | ||
80660219 OR |
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 | ||
ecc31c60 AC |
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 | ||
3d2b847f MK |
169 | return 0; |
170 | } | |
171 | ||
172 | const 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, | |
3d2b847f MK |
176 | .req_info_size = sizeof(struct linkstate_req_info), |
177 | .reply_data_size = sizeof(struct linkstate_reply_data), | |
3d2b847f MK |
178 | |
179 | .prepare_data = linkstate_prepare_data, | |
180 | .reply_size = linkstate_reply_size, | |
181 | .fill_reply = linkstate_fill_reply, | |
182 | }; |