mirror of https://gitee.com/openkylin/linux.git
75 lines
2.0 KiB
C
75 lines
2.0 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 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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};
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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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static const struct nla_policy
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linkstate_get_policy[ETHTOOL_A_LINKSTATE_MAX + 1] = {
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[ETHTOOL_A_LINKSTATE_UNSPEC] = { .type = NLA_REJECT },
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[ETHTOOL_A_LINKSTATE_HEADER] = { .type = NLA_NESTED },
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[ETHTOOL_A_LINKSTATE_LINK] = { .type = NLA_REJECT },
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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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ethnl_ops_complete(dev);
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return 0;
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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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return nla_total_size(sizeof(u8)) /* LINKSTATE_LINK */
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+ 0;
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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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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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.max_attr = ETHTOOL_A_LINKSTATE_MAX,
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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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.request_policy = linkstate_get_policy,
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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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