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ethtool: provide WoL settings with WOL_GET request
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>
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Michal Kubecek
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David S. Miller
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Jan 27, 2020
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Original file line number | Diff line number | Diff line change |
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// SPDX-License-Identifier: GPL-2.0-only | ||
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#include "netlink.h" | ||
#include "common.h" | ||
#include "bitset.h" | ||
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struct wol_req_info { | ||
struct ethnl_req_info base; | ||
}; | ||
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struct wol_reply_data { | ||
struct ethnl_reply_data base; | ||
struct ethtool_wolinfo wol; | ||
bool show_sopass; | ||
}; | ||
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#define WOL_REPDATA(__reply_base) \ | ||
container_of(__reply_base, struct wol_reply_data, base) | ||
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static const struct nla_policy | ||
wol_get_policy[ETHTOOL_A_WOL_MAX + 1] = { | ||
[ETHTOOL_A_WOL_UNSPEC] = { .type = NLA_REJECT }, | ||
[ETHTOOL_A_WOL_HEADER] = { .type = NLA_NESTED }, | ||
[ETHTOOL_A_WOL_MODES] = { .type = NLA_REJECT }, | ||
[ETHTOOL_A_WOL_SOPASS] = { .type = NLA_REJECT }, | ||
}; | ||
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static int wol_prepare_data(const struct ethnl_req_info *req_base, | ||
struct ethnl_reply_data *reply_base, | ||
struct genl_info *info) | ||
{ | ||
struct wol_reply_data *data = WOL_REPDATA(reply_base); | ||
struct net_device *dev = reply_base->dev; | ||
int ret; | ||
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if (!dev->ethtool_ops->get_wol) | ||
return -EOPNOTSUPP; | ||
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ret = ethnl_ops_begin(dev); | ||
if (ret < 0) | ||
return ret; | ||
dev->ethtool_ops->get_wol(dev, &data->wol); | ||
ethnl_ops_complete(dev); | ||
data->show_sopass = data->wol.supported & WAKE_MAGICSECURE; | ||
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return 0; | ||
} | ||
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static int wol_reply_size(const struct ethnl_req_info *req_base, | ||
const struct ethnl_reply_data *reply_base) | ||
{ | ||
bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS; | ||
const struct wol_reply_data *data = WOL_REPDATA(reply_base); | ||
int len; | ||
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len = ethnl_bitset32_size(&data->wol.wolopts, &data->wol.supported, | ||
WOL_MODE_COUNT, wol_mode_names, compact); | ||
if (len < 0) | ||
return len; | ||
if (data->show_sopass) | ||
len += nla_total_size(sizeof(data->wol.sopass)); | ||
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return len; | ||
} | ||
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static int wol_fill_reply(struct sk_buff *skb, | ||
const struct ethnl_req_info *req_base, | ||
const struct ethnl_reply_data *reply_base) | ||
{ | ||
bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS; | ||
const struct wol_reply_data *data = WOL_REPDATA(reply_base); | ||
int ret; | ||
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ret = ethnl_put_bitset32(skb, ETHTOOL_A_WOL_MODES, &data->wol.wolopts, | ||
&data->wol.supported, WOL_MODE_COUNT, | ||
wol_mode_names, compact); | ||
if (ret < 0) | ||
return ret; | ||
if (data->show_sopass && | ||
nla_put(skb, ETHTOOL_A_WOL_SOPASS, sizeof(data->wol.sopass), | ||
data->wol.sopass)) | ||
return -EMSGSIZE; | ||
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return 0; | ||
} | ||
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const struct ethnl_request_ops ethnl_wol_request_ops = { | ||
.request_cmd = ETHTOOL_MSG_WOL_GET, | ||
.reply_cmd = ETHTOOL_MSG_WOL_GET_REPLY, | ||
.hdr_attr = ETHTOOL_A_WOL_HEADER, | ||
.max_attr = ETHTOOL_A_WOL_MAX, | ||
.req_info_size = sizeof(struct wol_req_info), | ||
.reply_data_size = sizeof(struct wol_reply_data), | ||
.request_policy = wol_get_policy, | ||
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.prepare_data = wol_prepare_data, | ||
.reply_size = wol_reply_size, | ||
.fill_reply = wol_fill_reply, | ||
}; |