118ff0bcdSOleksij Rempel // SPDX-License-Identifier: GPL-2.0-only
218ff0bcdSOleksij Rempel //
37ec07774SBo Liu // ethtool interface for Ethernet PSE (Power Sourcing Equipment)
418ff0bcdSOleksij Rempel // and PD (Powered Device)
518ff0bcdSOleksij Rempel //
618ff0bcdSOleksij Rempel // Copyright (c) 2022 Pengutronix, Oleksij Rempel <kernel@pengutronix.de>
718ff0bcdSOleksij Rempel //
818ff0bcdSOleksij Rempel
918ff0bcdSOleksij Rempel #include "common.h"
1018ff0bcdSOleksij Rempel #include "linux/pse-pd/pse.h"
1118ff0bcdSOleksij Rempel #include "netlink.h"
1218ff0bcdSOleksij Rempel #include <linux/ethtool_netlink.h>
1318ff0bcdSOleksij Rempel #include <linux/ethtool.h>
1418ff0bcdSOleksij Rempel #include <linux/phy.h>
1518ff0bcdSOleksij Rempel
1618ff0bcdSOleksij Rempel struct pse_req_info {
1718ff0bcdSOleksij Rempel struct ethnl_req_info base;
1818ff0bcdSOleksij Rempel };
1918ff0bcdSOleksij Rempel
2018ff0bcdSOleksij Rempel struct pse_reply_data {
2118ff0bcdSOleksij Rempel struct ethnl_reply_data base;
2218ff0bcdSOleksij Rempel struct pse_control_status status;
2318ff0bcdSOleksij Rempel };
2418ff0bcdSOleksij Rempel
2518ff0bcdSOleksij Rempel #define PSE_REPDATA(__reply_base) \
2618ff0bcdSOleksij Rempel container_of(__reply_base, struct pse_reply_data, base)
2718ff0bcdSOleksij Rempel
2818ff0bcdSOleksij Rempel /* PSE_GET */
2918ff0bcdSOleksij Rempel
3018ff0bcdSOleksij Rempel const struct nla_policy ethnl_pse_get_policy[ETHTOOL_A_PSE_HEADER + 1] = {
3118ff0bcdSOleksij Rempel [ETHTOOL_A_PSE_HEADER] = NLA_POLICY_NESTED(ethnl_header_policy),
3218ff0bcdSOleksij Rempel };
3318ff0bcdSOleksij Rempel
pse_get_pse_attributes(struct net_device * dev,struct netlink_ext_ack * extack,struct pse_reply_data * data)3418ff0bcdSOleksij Rempel static int pse_get_pse_attributes(struct net_device *dev,
3518ff0bcdSOleksij Rempel struct netlink_ext_ack *extack,
3618ff0bcdSOleksij Rempel struct pse_reply_data *data)
3718ff0bcdSOleksij Rempel {
3818ff0bcdSOleksij Rempel struct phy_device *phydev = dev->phydev;
3918ff0bcdSOleksij Rempel
4018ff0bcdSOleksij Rempel if (!phydev) {
4118ff0bcdSOleksij Rempel NL_SET_ERR_MSG(extack, "No PHY is attached");
4218ff0bcdSOleksij Rempel return -EOPNOTSUPP;
4318ff0bcdSOleksij Rempel }
4418ff0bcdSOleksij Rempel
4518ff0bcdSOleksij Rempel if (!phydev->psec) {
4618ff0bcdSOleksij Rempel NL_SET_ERR_MSG(extack, "No PSE is attached");
4718ff0bcdSOleksij Rempel return -EOPNOTSUPP;
4818ff0bcdSOleksij Rempel }
4918ff0bcdSOleksij Rempel
5018ff0bcdSOleksij Rempel memset(&data->status, 0, sizeof(data->status));
5118ff0bcdSOleksij Rempel
5218ff0bcdSOleksij Rempel return pse_ethtool_get_status(phydev->psec, extack, &data->status);
5318ff0bcdSOleksij Rempel }
5418ff0bcdSOleksij Rempel
pse_prepare_data(const struct ethnl_req_info * req_base,struct ethnl_reply_data * reply_base,const struct genl_info * info)5518ff0bcdSOleksij Rempel static int pse_prepare_data(const struct ethnl_req_info *req_base,
5618ff0bcdSOleksij Rempel struct ethnl_reply_data *reply_base,
57*f946270dSJakub Kicinski const struct genl_info *info)
5818ff0bcdSOleksij Rempel {
5918ff0bcdSOleksij Rempel struct pse_reply_data *data = PSE_REPDATA(reply_base);
6018ff0bcdSOleksij Rempel struct net_device *dev = reply_base->dev;
6118ff0bcdSOleksij Rempel int ret;
6218ff0bcdSOleksij Rempel
6318ff0bcdSOleksij Rempel ret = ethnl_ops_begin(dev);
6418ff0bcdSOleksij Rempel if (ret < 0)
6518ff0bcdSOleksij Rempel return ret;
6618ff0bcdSOleksij Rempel
67*f946270dSJakub Kicinski ret = pse_get_pse_attributes(dev, info->extack, data);
6818ff0bcdSOleksij Rempel
6918ff0bcdSOleksij Rempel ethnl_ops_complete(dev);
7018ff0bcdSOleksij Rempel
7118ff0bcdSOleksij Rempel return ret;
7218ff0bcdSOleksij Rempel }
7318ff0bcdSOleksij Rempel
pse_reply_size(const struct ethnl_req_info * req_base,const struct ethnl_reply_data * reply_base)7418ff0bcdSOleksij Rempel static int pse_reply_size(const struct ethnl_req_info *req_base,
7518ff0bcdSOleksij Rempel const struct ethnl_reply_data *reply_base)
7618ff0bcdSOleksij Rempel {
7718ff0bcdSOleksij Rempel const struct pse_reply_data *data = PSE_REPDATA(reply_base);
7818ff0bcdSOleksij Rempel const struct pse_control_status *st = &data->status;
7918ff0bcdSOleksij Rempel int len = 0;
8018ff0bcdSOleksij Rempel
8118ff0bcdSOleksij Rempel if (st->podl_admin_state > 0)
8218ff0bcdSOleksij Rempel len += nla_total_size(sizeof(u32)); /* _PODL_PSE_ADMIN_STATE */
8318ff0bcdSOleksij Rempel if (st->podl_pw_status > 0)
8418ff0bcdSOleksij Rempel len += nla_total_size(sizeof(u32)); /* _PODL_PSE_PW_D_STATUS */
8518ff0bcdSOleksij Rempel
8618ff0bcdSOleksij Rempel return len;
8718ff0bcdSOleksij Rempel }
8818ff0bcdSOleksij Rempel
pse_fill_reply(struct sk_buff * skb,const struct ethnl_req_info * req_base,const struct ethnl_reply_data * reply_base)8918ff0bcdSOleksij Rempel static int pse_fill_reply(struct sk_buff *skb,
9018ff0bcdSOleksij Rempel const struct ethnl_req_info *req_base,
9118ff0bcdSOleksij Rempel const struct ethnl_reply_data *reply_base)
9218ff0bcdSOleksij Rempel {
9318ff0bcdSOleksij Rempel const struct pse_reply_data *data = PSE_REPDATA(reply_base);
9418ff0bcdSOleksij Rempel const struct pse_control_status *st = &data->status;
9518ff0bcdSOleksij Rempel
9618ff0bcdSOleksij Rempel if (st->podl_admin_state > 0 &&
9718ff0bcdSOleksij Rempel nla_put_u32(skb, ETHTOOL_A_PODL_PSE_ADMIN_STATE,
9818ff0bcdSOleksij Rempel st->podl_admin_state))
9918ff0bcdSOleksij Rempel return -EMSGSIZE;
10018ff0bcdSOleksij Rempel
10118ff0bcdSOleksij Rempel if (st->podl_pw_status > 0 &&
10218ff0bcdSOleksij Rempel nla_put_u32(skb, ETHTOOL_A_PODL_PSE_PW_D_STATUS,
10318ff0bcdSOleksij Rempel st->podl_pw_status))
10418ff0bcdSOleksij Rempel return -EMSGSIZE;
10518ff0bcdSOleksij Rempel
10618ff0bcdSOleksij Rempel return 0;
10718ff0bcdSOleksij Rempel }
10818ff0bcdSOleksij Rempel
10904007961SJakub Kicinski /* PSE_SET */
11004007961SJakub Kicinski
11104007961SJakub Kicinski const struct nla_policy ethnl_pse_set_policy[ETHTOOL_A_PSE_MAX + 1] = {
11204007961SJakub Kicinski [ETHTOOL_A_PSE_HEADER] = NLA_POLICY_NESTED(ethnl_header_policy),
11304007961SJakub Kicinski [ETHTOOL_A_PODL_PSE_ADMIN_CONTROL] =
11404007961SJakub Kicinski NLA_POLICY_RANGE(NLA_U32, ETHTOOL_PODL_PSE_ADMIN_STATE_DISABLED,
11504007961SJakub Kicinski ETHTOOL_PODL_PSE_ADMIN_STATE_ENABLED),
11604007961SJakub Kicinski };
11704007961SJakub Kicinski
11804007961SJakub Kicinski static int
ethnl_set_pse_validate(struct ethnl_req_info * req_info,struct genl_info * info)11904007961SJakub Kicinski ethnl_set_pse_validate(struct ethnl_req_info *req_info, struct genl_info *info)
12004007961SJakub Kicinski {
12104007961SJakub Kicinski return !!info->attrs[ETHTOOL_A_PODL_PSE_ADMIN_CONTROL];
12204007961SJakub Kicinski }
12304007961SJakub Kicinski
12404007961SJakub Kicinski static int
ethnl_set_pse(struct ethnl_req_info * req_info,struct genl_info * info)12504007961SJakub Kicinski ethnl_set_pse(struct ethnl_req_info *req_info, struct genl_info *info)
12604007961SJakub Kicinski {
12704007961SJakub Kicinski struct net_device *dev = req_info->dev;
12804007961SJakub Kicinski struct pse_control_config config = {};
12904007961SJakub Kicinski struct nlattr **tb = info->attrs;
13004007961SJakub Kicinski struct phy_device *phydev;
13104007961SJakub Kicinski
13204007961SJakub Kicinski /* this values are already validated by the ethnl_pse_set_policy */
13304007961SJakub Kicinski config.admin_cotrol = nla_get_u32(tb[ETHTOOL_A_PODL_PSE_ADMIN_CONTROL]);
13404007961SJakub Kicinski
13504007961SJakub Kicinski phydev = dev->phydev;
13604007961SJakub Kicinski if (!phydev) {
13704007961SJakub Kicinski NL_SET_ERR_MSG(info->extack, "No PHY is attached");
13804007961SJakub Kicinski return -EOPNOTSUPP;
13904007961SJakub Kicinski }
14004007961SJakub Kicinski
14104007961SJakub Kicinski if (!phydev->psec) {
14204007961SJakub Kicinski NL_SET_ERR_MSG(info->extack, "No PSE is attached");
14304007961SJakub Kicinski return -EOPNOTSUPP;
14404007961SJakub Kicinski }
14504007961SJakub Kicinski
14604007961SJakub Kicinski /* Return errno directly - PSE has no notification */
14704007961SJakub Kicinski return pse_ethtool_set_config(phydev->psec, info->extack, &config);
14804007961SJakub Kicinski }
14904007961SJakub Kicinski
15018ff0bcdSOleksij Rempel const struct ethnl_request_ops ethnl_pse_request_ops = {
15118ff0bcdSOleksij Rempel .request_cmd = ETHTOOL_MSG_PSE_GET,
15218ff0bcdSOleksij Rempel .reply_cmd = ETHTOOL_MSG_PSE_GET_REPLY,
15318ff0bcdSOleksij Rempel .hdr_attr = ETHTOOL_A_PSE_HEADER,
15418ff0bcdSOleksij Rempel .req_info_size = sizeof(struct pse_req_info),
15518ff0bcdSOleksij Rempel .reply_data_size = sizeof(struct pse_reply_data),
15618ff0bcdSOleksij Rempel
15718ff0bcdSOleksij Rempel .prepare_data = pse_prepare_data,
15818ff0bcdSOleksij Rempel .reply_size = pse_reply_size,
15918ff0bcdSOleksij Rempel .fill_reply = pse_fill_reply,
16004007961SJakub Kicinski
16104007961SJakub Kicinski .set_validate = ethnl_set_pse_validate,
16204007961SJakub Kicinski .set = ethnl_set_pse,
16304007961SJakub Kicinski /* PSE has no notification */
16418ff0bcdSOleksij Rempel };
165