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https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
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51ea22b04e
Implement WOL_GET request to get wake-on-lan settings for a device, traditionally available via ETHTOOL_GWOL ioctl request. As part of the implementation, provide symbolic names for wake-on-line modes as ETH_SS_WOL_MODES string set. Signed-off-by: Michal Kubecek <mkubecek@suse.cz> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
100 lines
2.6 KiB
C
100 lines
2.6 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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#include "bitset.h"
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struct wol_req_info {
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struct ethnl_req_info base;
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};
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struct wol_reply_data {
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struct ethnl_reply_data base;
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struct ethtool_wolinfo wol;
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bool show_sopass;
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};
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#define WOL_REPDATA(__reply_base) \
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container_of(__reply_base, struct wol_reply_data, base)
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static const struct nla_policy
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wol_get_policy[ETHTOOL_A_WOL_MAX + 1] = {
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[ETHTOOL_A_WOL_UNSPEC] = { .type = NLA_REJECT },
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[ETHTOOL_A_WOL_HEADER] = { .type = NLA_NESTED },
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[ETHTOOL_A_WOL_MODES] = { .type = NLA_REJECT },
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[ETHTOOL_A_WOL_SOPASS] = { .type = NLA_REJECT },
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};
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static int wol_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 wol_reply_data *data = WOL_REPDATA(reply_base);
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struct net_device *dev = reply_base->dev;
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int ret;
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if (!dev->ethtool_ops->get_wol)
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return -EOPNOTSUPP;
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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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dev->ethtool_ops->get_wol(dev, &data->wol);
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ethnl_ops_complete(dev);
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data->show_sopass = data->wol.supported & WAKE_MAGICSECURE;
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return 0;
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}
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static int wol_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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bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS;
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const struct wol_reply_data *data = WOL_REPDATA(reply_base);
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int len;
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len = ethnl_bitset32_size(&data->wol.wolopts, &data->wol.supported,
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WOL_MODE_COUNT, wol_mode_names, compact);
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if (len < 0)
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return len;
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if (data->show_sopass)
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len += nla_total_size(sizeof(data->wol.sopass));
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return len;
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}
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static int wol_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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bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS;
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const struct wol_reply_data *data = WOL_REPDATA(reply_base);
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int ret;
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ret = ethnl_put_bitset32(skb, ETHTOOL_A_WOL_MODES, &data->wol.wolopts,
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&data->wol.supported, WOL_MODE_COUNT,
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wol_mode_names, compact);
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if (ret < 0)
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return ret;
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if (data->show_sopass &&
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nla_put(skb, ETHTOOL_A_WOL_SOPASS, sizeof(data->wol.sopass),
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data->wol.sopass))
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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_wol_request_ops = {
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.request_cmd = ETHTOOL_MSG_WOL_GET,
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.reply_cmd = ETHTOOL_MSG_WOL_GET_REPLY,
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.hdr_attr = ETHTOOL_A_WOL_HEADER,
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.max_attr = ETHTOOL_A_WOL_MAX,
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.req_info_size = sizeof(struct wol_req_info),
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.reply_data_size = sizeof(struct wol_reply_data),
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.request_policy = wol_get_policy,
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.prepare_data = wol_prepare_data,
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.reply_size = wol_reply_size,
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.fill_reply = wol_fill_reply,
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};
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