forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
180 lines
4.5 KiB
180 lines
4.5 KiB
// SPDX-License-Identifier: GPL-2.0-only |
|
|
|
#include <linux/ethtool.h> |
|
|
|
#include "netlink.h" |
|
#include "common.h" |
|
#include "bitset.h" |
|
|
|
struct module_req_info { |
|
struct ethnl_req_info base; |
|
}; |
|
|
|
struct module_reply_data { |
|
struct ethnl_reply_data base; |
|
struct ethtool_module_power_mode_params power; |
|
}; |
|
|
|
#define MODULE_REPDATA(__reply_base) \ |
|
container_of(__reply_base, struct module_reply_data, base) |
|
|
|
/* MODULE_GET */ |
|
|
|
const struct nla_policy ethnl_module_get_policy[ETHTOOL_A_MODULE_HEADER + 1] = { |
|
[ETHTOOL_A_MODULE_HEADER] = NLA_POLICY_NESTED(ethnl_header_policy), |
|
}; |
|
|
|
static int module_get_power_mode(struct net_device *dev, |
|
struct module_reply_data *data, |
|
struct netlink_ext_ack *extack) |
|
{ |
|
const struct ethtool_ops *ops = dev->ethtool_ops; |
|
|
|
if (!ops->get_module_power_mode) |
|
return 0; |
|
|
|
return ops->get_module_power_mode(dev, &data->power, extack); |
|
} |
|
|
|
static int module_prepare_data(const struct ethnl_req_info *req_base, |
|
struct ethnl_reply_data *reply_base, |
|
struct genl_info *info) |
|
{ |
|
struct module_reply_data *data = MODULE_REPDATA(reply_base); |
|
struct netlink_ext_ack *extack = info ? info->extack : NULL; |
|
struct net_device *dev = reply_base->dev; |
|
int ret; |
|
|
|
ret = ethnl_ops_begin(dev); |
|
if (ret < 0) |
|
return ret; |
|
|
|
ret = module_get_power_mode(dev, data, extack); |
|
if (ret < 0) |
|
goto out_complete; |
|
|
|
out_complete: |
|
ethnl_ops_complete(dev); |
|
return ret; |
|
} |
|
|
|
static int module_reply_size(const struct ethnl_req_info *req_base, |
|
const struct ethnl_reply_data *reply_base) |
|
{ |
|
struct module_reply_data *data = MODULE_REPDATA(reply_base); |
|
int len = 0; |
|
|
|
if (data->power.policy) |
|
len += nla_total_size(sizeof(u8)); /* _MODULE_POWER_MODE_POLICY */ |
|
|
|
if (data->power.mode) |
|
len += nla_total_size(sizeof(u8)); /* _MODULE_POWER_MODE */ |
|
|
|
return len; |
|
} |
|
|
|
static int module_fill_reply(struct sk_buff *skb, |
|
const struct ethnl_req_info *req_base, |
|
const struct ethnl_reply_data *reply_base) |
|
{ |
|
const struct module_reply_data *data = MODULE_REPDATA(reply_base); |
|
|
|
if (data->power.policy && |
|
nla_put_u8(skb, ETHTOOL_A_MODULE_POWER_MODE_POLICY, |
|
data->power.policy)) |
|
return -EMSGSIZE; |
|
|
|
if (data->power.mode && |
|
nla_put_u8(skb, ETHTOOL_A_MODULE_POWER_MODE, data->power.mode)) |
|
return -EMSGSIZE; |
|
|
|
return 0; |
|
} |
|
|
|
const struct ethnl_request_ops ethnl_module_request_ops = { |
|
.request_cmd = ETHTOOL_MSG_MODULE_GET, |
|
.reply_cmd = ETHTOOL_MSG_MODULE_GET_REPLY, |
|
.hdr_attr = ETHTOOL_A_MODULE_HEADER, |
|
.req_info_size = sizeof(struct module_req_info), |
|
.reply_data_size = sizeof(struct module_reply_data), |
|
|
|
.prepare_data = module_prepare_data, |
|
.reply_size = module_reply_size, |
|
.fill_reply = module_fill_reply, |
|
}; |
|
|
|
/* MODULE_SET */ |
|
|
|
const struct nla_policy ethnl_module_set_policy[ETHTOOL_A_MODULE_POWER_MODE_POLICY + 1] = { |
|
[ETHTOOL_A_MODULE_HEADER] = NLA_POLICY_NESTED(ethnl_header_policy), |
|
[ETHTOOL_A_MODULE_POWER_MODE_POLICY] = |
|
NLA_POLICY_RANGE(NLA_U8, ETHTOOL_MODULE_POWER_MODE_POLICY_HIGH, |
|
ETHTOOL_MODULE_POWER_MODE_POLICY_AUTO), |
|
}; |
|
|
|
static int module_set_power_mode(struct net_device *dev, struct nlattr **tb, |
|
bool *p_mod, struct netlink_ext_ack *extack) |
|
{ |
|
struct ethtool_module_power_mode_params power = {}; |
|
struct ethtool_module_power_mode_params power_new; |
|
const struct ethtool_ops *ops = dev->ethtool_ops; |
|
int ret; |
|
|
|
if (!tb[ETHTOOL_A_MODULE_POWER_MODE_POLICY]) |
|
return 0; |
|
|
|
if (!ops->get_module_power_mode || !ops->set_module_power_mode) { |
|
NL_SET_ERR_MSG_ATTR(extack, |
|
tb[ETHTOOL_A_MODULE_POWER_MODE_POLICY], |
|
"Setting power mode policy is not supported by this device"); |
|
return -EOPNOTSUPP; |
|
} |
|
|
|
power_new.policy = nla_get_u8(tb[ETHTOOL_A_MODULE_POWER_MODE_POLICY]); |
|
ret = ops->get_module_power_mode(dev, &power, extack); |
|
if (ret < 0) |
|
return ret; |
|
|
|
if (power_new.policy == power.policy) |
|
return 0; |
|
*p_mod = true; |
|
|
|
return ops->set_module_power_mode(dev, &power_new, extack); |
|
} |
|
|
|
int ethnl_set_module(struct sk_buff *skb, struct genl_info *info) |
|
{ |
|
struct ethnl_req_info req_info = {}; |
|
struct nlattr **tb = info->attrs; |
|
struct net_device *dev; |
|
bool mod = false; |
|
int ret; |
|
|
|
ret = ethnl_parse_header_dev_get(&req_info, tb[ETHTOOL_A_MODULE_HEADER], |
|
genl_info_net(info), info->extack, |
|
true); |
|
if (ret < 0) |
|
return ret; |
|
dev = req_info.dev; |
|
|
|
rtnl_lock(); |
|
ret = ethnl_ops_begin(dev); |
|
if (ret < 0) |
|
goto out_rtnl; |
|
|
|
ret = module_set_power_mode(dev, tb, &mod, info->extack); |
|
if (ret < 0) |
|
goto out_ops; |
|
|
|
if (!mod) |
|
goto out_ops; |
|
|
|
ethtool_notify(dev, ETHTOOL_MSG_MODULE_NTF, NULL); |
|
|
|
out_ops: |
|
ethnl_ops_complete(dev); |
|
out_rtnl: |
|
rtnl_unlock(); |
|
ethnl_parse_header_dev_put(&req_info); |
|
return ret; |
|
}
|
|
|