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182 lines
4.4 KiB
182 lines
4.4 KiB
// 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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#include <linux/phy.h> |
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struct linkstate_req_info { |
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struct ethnl_req_info base; |
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}; |
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struct linkstate_reply_data { |
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struct ethnl_reply_data base; |
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int link; |
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int sqi; |
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int sqi_max; |
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bool link_ext_state_provided; |
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struct ethtool_link_ext_state_info ethtool_link_ext_state_info; |
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}; |
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#define LINKSTATE_REPDATA(__reply_base) \ |
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container_of(__reply_base, struct linkstate_reply_data, base) |
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const struct nla_policy ethnl_linkstate_get_policy[] = { |
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[ETHTOOL_A_LINKSTATE_HEADER] = |
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NLA_POLICY_NESTED(ethnl_header_policy), |
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}; |
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static int linkstate_get_sqi(struct net_device *dev) |
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{ |
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struct phy_device *phydev = dev->phydev; |
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int ret; |
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if (!phydev) |
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return -EOPNOTSUPP; |
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mutex_lock(&phydev->lock); |
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if (!phydev->drv || !phydev->drv->get_sqi) |
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ret = -EOPNOTSUPP; |
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else |
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ret = phydev->drv->get_sqi(phydev); |
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mutex_unlock(&phydev->lock); |
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return ret; |
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} |
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static int linkstate_get_sqi_max(struct net_device *dev) |
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{ |
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struct phy_device *phydev = dev->phydev; |
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int ret; |
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if (!phydev) |
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return -EOPNOTSUPP; |
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mutex_lock(&phydev->lock); |
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if (!phydev->drv || !phydev->drv->get_sqi_max) |
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ret = -EOPNOTSUPP; |
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else |
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ret = phydev->drv->get_sqi_max(phydev); |
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mutex_unlock(&phydev->lock); |
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return ret; |
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}; |
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static int linkstate_get_link_ext_state(struct net_device *dev, |
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struct linkstate_reply_data *data) |
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{ |
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int err; |
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if (!dev->ethtool_ops->get_link_ext_state) |
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return -EOPNOTSUPP; |
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err = dev->ethtool_ops->get_link_ext_state(dev, &data->ethtool_link_ext_state_info); |
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if (err) |
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return err; |
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data->link_ext_state_provided = true; |
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return 0; |
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} |
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static int linkstate_prepare_data(const struct ethnl_req_info *req_base, |
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struct ethnl_reply_data *reply_base, |
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struct genl_info *info) |
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{ |
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struct linkstate_reply_data *data = LINKSTATE_REPDATA(reply_base); |
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struct net_device *dev = reply_base->dev; |
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int ret; |
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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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data->link = __ethtool_get_link(dev); |
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ret = linkstate_get_sqi(dev); |
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if (ret < 0 && ret != -EOPNOTSUPP) |
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goto out; |
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data->sqi = ret; |
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ret = linkstate_get_sqi_max(dev); |
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if (ret < 0 && ret != -EOPNOTSUPP) |
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goto out; |
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data->sqi_max = ret; |
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if (dev->flags & IFF_UP) { |
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ret = linkstate_get_link_ext_state(dev, data); |
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if (ret < 0 && ret != -EOPNOTSUPP && ret != -ENODATA) |
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goto out; |
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} |
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ret = 0; |
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out: |
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ethnl_ops_complete(dev); |
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return ret; |
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} |
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static int linkstate_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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struct linkstate_reply_data *data = LINKSTATE_REPDATA(reply_base); |
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int len; |
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len = nla_total_size(sizeof(u8)) /* LINKSTATE_LINK */ |
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+ 0; |
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if (data->sqi != -EOPNOTSUPP) |
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len += nla_total_size(sizeof(u32)); |
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if (data->sqi_max != -EOPNOTSUPP) |
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len += nla_total_size(sizeof(u32)); |
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if (data->link_ext_state_provided) |
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len += nla_total_size(sizeof(u8)); /* LINKSTATE_EXT_STATE */ |
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if (data->ethtool_link_ext_state_info.__link_ext_substate) |
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len += nla_total_size(sizeof(u8)); /* LINKSTATE_EXT_SUBSTATE */ |
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return len; |
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} |
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static int linkstate_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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struct linkstate_reply_data *data = LINKSTATE_REPDATA(reply_base); |
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if (data->link >= 0 && |
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nla_put_u8(skb, ETHTOOL_A_LINKSTATE_LINK, !!data->link)) |
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return -EMSGSIZE; |
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if (data->sqi != -EOPNOTSUPP && |
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nla_put_u32(skb, ETHTOOL_A_LINKSTATE_SQI, data->sqi)) |
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return -EMSGSIZE; |
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if (data->sqi_max != -EOPNOTSUPP && |
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nla_put_u32(skb, ETHTOOL_A_LINKSTATE_SQI_MAX, data->sqi_max)) |
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return -EMSGSIZE; |
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if (data->link_ext_state_provided) { |
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if (nla_put_u8(skb, ETHTOOL_A_LINKSTATE_EXT_STATE, |
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data->ethtool_link_ext_state_info.link_ext_state)) |
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return -EMSGSIZE; |
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if (data->ethtool_link_ext_state_info.__link_ext_substate && |
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nla_put_u8(skb, ETHTOOL_A_LINKSTATE_EXT_SUBSTATE, |
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data->ethtool_link_ext_state_info.__link_ext_substate)) |
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return -EMSGSIZE; |
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} |
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return 0; |
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} |
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const struct ethnl_request_ops ethnl_linkstate_request_ops = { |
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.request_cmd = ETHTOOL_MSG_LINKSTATE_GET, |
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.reply_cmd = ETHTOOL_MSG_LINKSTATE_GET_REPLY, |
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.hdr_attr = ETHTOOL_A_LINKSTATE_HEADER, |
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.req_info_size = sizeof(struct linkstate_req_info), |
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.reply_data_size = sizeof(struct linkstate_reply_data), |
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.prepare_data = linkstate_prepare_data, |
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.reply_size = linkstate_reply_size, |
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.fill_reply = linkstate_fill_reply, |
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};
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