| // SPDX-License-Identifier: GPL-2.0-only |
| |
| #include "netlink.h" |
| #include "common.h" |
| |
| struct linkinfo_req_info { |
| struct ethnl_req_info base; |
| }; |
| |
| struct linkinfo_reply_data { |
| struct ethnl_reply_data base; |
| struct ethtool_link_ksettings ksettings; |
| struct ethtool_link_settings *lsettings; |
| }; |
| |
| #define LINKINFO_REPDATA(__reply_base) \ |
| container_of(__reply_base, struct linkinfo_reply_data, base) |
| |
| static const struct nla_policy |
| linkinfo_get_policy[ETHTOOL_A_LINKINFO_MAX + 1] = { |
| [ETHTOOL_A_LINKINFO_UNSPEC] = { .type = NLA_REJECT }, |
| [ETHTOOL_A_LINKINFO_HEADER] = { .type = NLA_NESTED }, |
| [ETHTOOL_A_LINKINFO_PORT] = { .type = NLA_REJECT }, |
| [ETHTOOL_A_LINKINFO_PHYADDR] = { .type = NLA_REJECT }, |
| [ETHTOOL_A_LINKINFO_TP_MDIX] = { .type = NLA_REJECT }, |
| [ETHTOOL_A_LINKINFO_TP_MDIX_CTRL] = { .type = NLA_REJECT }, |
| [ETHTOOL_A_LINKINFO_TRANSCEIVER] = { .type = NLA_REJECT }, |
| }; |
| |
| static int linkinfo_prepare_data(const struct ethnl_req_info *req_base, |
| struct ethnl_reply_data *reply_base, |
| struct genl_info *info) |
| { |
| struct linkinfo_reply_data *data = LINKINFO_REPDATA(reply_base); |
| struct net_device *dev = reply_base->dev; |
| int ret; |
| |
| data->lsettings = &data->ksettings.base; |
| |
| ret = ethnl_ops_begin(dev); |
| if (ret < 0) |
| return ret; |
| ret = __ethtool_get_link_ksettings(dev, &data->ksettings); |
| if (ret < 0 && info) |
| GENL_SET_ERR_MSG(info, "failed to retrieve link settings"); |
| ethnl_ops_complete(dev); |
| |
| return ret; |
| } |
| |
| static int linkinfo_reply_size(const struct ethnl_req_info *req_base, |
| const struct ethnl_reply_data *reply_base) |
| { |
| return nla_total_size(sizeof(u8)) /* LINKINFO_PORT */ |
| + nla_total_size(sizeof(u8)) /* LINKINFO_PHYADDR */ |
| + nla_total_size(sizeof(u8)) /* LINKINFO_TP_MDIX */ |
| + nla_total_size(sizeof(u8)) /* LINKINFO_TP_MDIX_CTRL */ |
| + nla_total_size(sizeof(u8)) /* LINKINFO_TRANSCEIVER */ |
| + 0; |
| } |
| |
| static int linkinfo_fill_reply(struct sk_buff *skb, |
| const struct ethnl_req_info *req_base, |
| const struct ethnl_reply_data *reply_base) |
| { |
| const struct linkinfo_reply_data *data = LINKINFO_REPDATA(reply_base); |
| |
| if (nla_put_u8(skb, ETHTOOL_A_LINKINFO_PORT, data->lsettings->port) || |
| nla_put_u8(skb, ETHTOOL_A_LINKINFO_PHYADDR, |
| data->lsettings->phy_address) || |
| nla_put_u8(skb, ETHTOOL_A_LINKINFO_TP_MDIX, |
| data->lsettings->eth_tp_mdix) || |
| nla_put_u8(skb, ETHTOOL_A_LINKINFO_TP_MDIX_CTRL, |
| data->lsettings->eth_tp_mdix_ctrl) || |
| nla_put_u8(skb, ETHTOOL_A_LINKINFO_TRANSCEIVER, |
| data->lsettings->transceiver)) |
| return -EMSGSIZE; |
| |
| return 0; |
| } |
| |
| const struct ethnl_request_ops ethnl_linkinfo_request_ops = { |
| .request_cmd = ETHTOOL_MSG_LINKINFO_GET, |
| .reply_cmd = ETHTOOL_MSG_LINKINFO_GET_REPLY, |
| .hdr_attr = ETHTOOL_A_LINKINFO_HEADER, |
| .max_attr = ETHTOOL_A_LINKINFO_MAX, |
| .req_info_size = sizeof(struct linkinfo_req_info), |
| .reply_data_size = sizeof(struct linkinfo_reply_data), |
| .request_policy = linkinfo_get_policy, |
| |
| .prepare_data = linkinfo_prepare_data, |
| .reply_size = linkinfo_reply_size, |
| .fill_reply = linkinfo_fill_reply, |
| }; |
| |
| /* LINKINFO_SET */ |
| |
| static const struct nla_policy |
| linkinfo_set_policy[ETHTOOL_A_LINKINFO_MAX + 1] = { |
| [ETHTOOL_A_LINKINFO_UNSPEC] = { .type = NLA_REJECT }, |
| [ETHTOOL_A_LINKINFO_HEADER] = { .type = NLA_NESTED }, |
| [ETHTOOL_A_LINKINFO_PORT] = { .type = NLA_U8 }, |
| [ETHTOOL_A_LINKINFO_PHYADDR] = { .type = NLA_U8 }, |
| [ETHTOOL_A_LINKINFO_TP_MDIX] = { .type = NLA_REJECT }, |
| [ETHTOOL_A_LINKINFO_TP_MDIX_CTRL] = { .type = NLA_U8 }, |
| [ETHTOOL_A_LINKINFO_TRANSCEIVER] = { .type = NLA_REJECT }, |
| }; |
| |
| int ethnl_set_linkinfo(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct nlattr *tb[ETHTOOL_A_LINKINFO_MAX + 1]; |
| struct ethtool_link_ksettings ksettings = {}; |
| struct ethtool_link_settings *lsettings; |
| struct ethnl_req_info req_info = {}; |
| struct net_device *dev; |
| bool mod = false; |
| int ret; |
| |
| ret = nlmsg_parse(info->nlhdr, GENL_HDRLEN, tb, |
| ETHTOOL_A_LINKINFO_MAX, linkinfo_set_policy, |
| info->extack); |
| if (ret < 0) |
| return ret; |
| ret = ethnl_parse_header(&req_info, tb[ETHTOOL_A_LINKINFO_HEADER], |
| genl_info_net(info), info->extack, true); |
| if (ret < 0) |
| return ret; |
| dev = req_info.dev; |
| if (!dev->ethtool_ops->get_link_ksettings || |
| !dev->ethtool_ops->set_link_ksettings) |
| return -EOPNOTSUPP; |
| |
| rtnl_lock(); |
| ret = ethnl_ops_begin(dev); |
| if (ret < 0) |
| goto out_rtnl; |
| |
| ret = __ethtool_get_link_ksettings(dev, &ksettings); |
| if (ret < 0) { |
| if (info) |
| GENL_SET_ERR_MSG(info, "failed to retrieve link settings"); |
| goto out_ops; |
| } |
| lsettings = &ksettings.base; |
| |
| ethnl_update_u8(&lsettings->port, tb[ETHTOOL_A_LINKINFO_PORT], &mod); |
| ethnl_update_u8(&lsettings->phy_address, tb[ETHTOOL_A_LINKINFO_PHYADDR], |
| &mod); |
| ethnl_update_u8(&lsettings->eth_tp_mdix_ctrl, |
| tb[ETHTOOL_A_LINKINFO_TP_MDIX_CTRL], &mod); |
| ret = 0; |
| if (!mod) |
| goto out_ops; |
| |
| ret = dev->ethtool_ops->set_link_ksettings(dev, &ksettings); |
| if (ret < 0) |
| GENL_SET_ERR_MSG(info, "link settings update failed"); |
| else |
| ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF, NULL); |
| |
| out_ops: |
| ethnl_ops_complete(dev); |
| out_rtnl: |
| rtnl_unlock(); |
| dev_put(dev); |
| return ret; |
| } |