146 lines
4.1 KiB
C
146 lines
4.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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#include "netlink.h"
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#include "common.h"
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struct linkinfo_req_info {
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struct ethnl_req_info base;
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};
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struct linkinfo_reply_data {
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struct ethnl_reply_data base;
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struct ethtool_link_ksettings ksettings;
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struct ethtool_link_settings *lsettings;
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};
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#define LINKINFO_REPDATA(__reply_base) \
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container_of(__reply_base, struct linkinfo_reply_data, base)
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const struct nla_policy ethnl_linkinfo_get_policy[] = {
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[ETHTOOL_A_LINKINFO_HEADER] =
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NLA_POLICY_NESTED(ethnl_header_policy),
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};
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static int linkinfo_prepare_data(const struct ethnl_req_info *req_base,
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struct ethnl_reply_data *reply_base,
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const struct genl_info *info)
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{
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struct linkinfo_reply_data *data = LINKINFO_REPDATA(reply_base);
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struct net_device *dev = reply_base->dev;
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int ret;
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data->lsettings = &data->ksettings.base;
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ret = ethnl_ops_begin(dev);
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if (ret < 0)
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return ret;
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ret = __ethtool_get_link_ksettings(dev, &data->ksettings);
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if (ret < 0 && info)
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GENL_SET_ERR_MSG(info, "failed to retrieve link settings");
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ethnl_ops_complete(dev);
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return ret;
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}
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static int linkinfo_reply_size(const struct ethnl_req_info *req_base,
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const struct ethnl_reply_data *reply_base)
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{
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return nla_total_size(sizeof(u8)) /* LINKINFO_PORT */
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+ nla_total_size(sizeof(u8)) /* LINKINFO_PHYADDR */
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+ nla_total_size(sizeof(u8)) /* LINKINFO_TP_MDIX */
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+ nla_total_size(sizeof(u8)) /* LINKINFO_TP_MDIX_CTRL */
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+ nla_total_size(sizeof(u8)) /* LINKINFO_TRANSCEIVER */
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+ 0;
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}
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static int linkinfo_fill_reply(struct sk_buff *skb,
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const struct ethnl_req_info *req_base,
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const struct ethnl_reply_data *reply_base)
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{
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const struct linkinfo_reply_data *data = LINKINFO_REPDATA(reply_base);
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if (nla_put_u8(skb, ETHTOOL_A_LINKINFO_PORT, data->lsettings->port) ||
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nla_put_u8(skb, ETHTOOL_A_LINKINFO_PHYADDR,
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data->lsettings->phy_address) ||
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nla_put_u8(skb, ETHTOOL_A_LINKINFO_TP_MDIX,
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data->lsettings->eth_tp_mdix) ||
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nla_put_u8(skb, ETHTOOL_A_LINKINFO_TP_MDIX_CTRL,
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data->lsettings->eth_tp_mdix_ctrl) ||
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nla_put_u8(skb, ETHTOOL_A_LINKINFO_TRANSCEIVER,
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data->lsettings->transceiver))
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return -EMSGSIZE;
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return 0;
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}
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/* LINKINFO_SET */
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const struct nla_policy ethnl_linkinfo_set_policy[] = {
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[ETHTOOL_A_LINKINFO_HEADER] =
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NLA_POLICY_NESTED(ethnl_header_policy),
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[ETHTOOL_A_LINKINFO_PORT] = { .type = NLA_U8 },
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[ETHTOOL_A_LINKINFO_PHYADDR] = { .type = NLA_U8 },
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[ETHTOOL_A_LINKINFO_TP_MDIX_CTRL] = { .type = NLA_U8 },
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};
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static int
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ethnl_set_linkinfo_validate(struct ethnl_req_info *req_info,
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struct genl_info *info)
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{
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const struct ethtool_ops *ops = req_info->dev->ethtool_ops;
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if (!ops->get_link_ksettings || !ops->set_link_ksettings)
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return -EOPNOTSUPP;
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return 1;
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}
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static int
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ethnl_set_linkinfo(struct ethnl_req_info *req_info, struct genl_info *info)
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{
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struct ethtool_link_ksettings ksettings = {};
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struct ethtool_link_settings *lsettings;
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struct net_device *dev = req_info->dev;
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struct nlattr **tb = info->attrs;
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bool mod = false;
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int ret;
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ret = __ethtool_get_link_ksettings(dev, &ksettings);
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if (ret < 0) {
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GENL_SET_ERR_MSG(info, "failed to retrieve link settings");
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return ret;
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}
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lsettings = &ksettings.base;
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ethnl_update_u8(&lsettings->port, tb[ETHTOOL_A_LINKINFO_PORT], &mod);
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ethnl_update_u8(&lsettings->phy_address, tb[ETHTOOL_A_LINKINFO_PHYADDR],
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&mod);
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ethnl_update_u8(&lsettings->eth_tp_mdix_ctrl,
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tb[ETHTOOL_A_LINKINFO_TP_MDIX_CTRL], &mod);
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if (!mod)
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return 0;
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ret = dev->ethtool_ops->set_link_ksettings(dev, &ksettings);
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if (ret < 0) {
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GENL_SET_ERR_MSG(info, "link settings update failed");
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return ret;
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}
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return 1;
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}
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const struct ethnl_request_ops ethnl_linkinfo_request_ops = {
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.request_cmd = ETHTOOL_MSG_LINKINFO_GET,
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.reply_cmd = ETHTOOL_MSG_LINKINFO_GET_REPLY,
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.hdr_attr = ETHTOOL_A_LINKINFO_HEADER,
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.req_info_size = sizeof(struct linkinfo_req_info),
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.reply_data_size = sizeof(struct linkinfo_reply_data),
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.prepare_data = linkinfo_prepare_data,
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.reply_size = linkinfo_reply_size,
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.fill_reply = linkinfo_fill_reply,
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.set_validate = ethnl_set_linkinfo_validate,
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.set = ethnl_set_linkinfo,
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.set_ntf_cmd = ETHTOOL_MSG_LINKINFO_NTF,
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};
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