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// SPDX-License-Identifier: GPL-2.0-only
#include <linux/ethtool.h>
#include "netlink.h"
#include "common.h"
#include "bitset.h"
#include "module_fw.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,
const struct genl_info *info)
{
struct module_reply_data *data = MODULE_REPDATA(reply_base);
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, info->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;
}
/* 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
ethnl_set_module_validate(struct ethnl_req_info *req_info,
struct genl_info *info)
{
const struct ethtool_ops *ops = req_info->dev->ethtool_ops;
struct nlattr **tb = info->attrs;
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(info->extack,
tb[ETHTOOL_A_MODULE_POWER_MODE_POLICY],
"Setting power mode policy is not supported by this device");
return -EOPNOTSUPP;
}
return 1;
}
static int
ethnl_set_module(struct ethnl_req_info *req_info, struct genl_info *info)
{
struct ethtool_module_power_mode_params power = {};
struct ethtool_module_power_mode_params power_new;
const struct ethtool_ops *ops;
struct net_device *dev = req_info->dev;
struct nlattr **tb = info->attrs;
int ret;
ops = dev->ethtool_ops;
power_new.policy = nla_get_u8(tb[ETHTOOL_A_MODULE_POWER_MODE_POLICY]);
ret = ops->get_module_power_mode(dev, &power, info->extack);
if (ret < 0)
return ret;
if (power_new.policy == power.policy)
return 0;
ret = ops->set_module_power_mode(dev, &power_new, info->extack);
return ret < 0 ? ret : 1;
}
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,
.set_validate = ethnl_set_module_validate,
.set = ethnl_set_module,
.set_ntf_cmd = ETHTOOL_MSG_MODULE_NTF,
};
/* MODULE_FW_FLASH_NTF */
static int
ethnl_module_fw_flash_ntf_put_err(struct sk_buff *skb, char *err_msg,
char *sub_err_msg)
{
int err_msg_len, sub_err_msg_len, total_len;
struct nlattr *attr;
if (!err_msg)
return 0;
err_msg_len = strlen(err_msg);
total_len = err_msg_len + 2; /* For period and NUL. */
if (sub_err_msg) {
sub_err_msg_len = strlen(sub_err_msg);
total_len += sub_err_msg_len + 2; /* For ", ". */
}
attr = nla_reserve(skb, ETHTOOL_A_MODULE_FW_FLASH_STATUS_MSG,
total_len);
if (!attr)
return -ENOMEM;
if (sub_err_msg)
sprintf(nla_data(attr), "%s, %s.", err_msg, sub_err_msg);
else
sprintf(nla_data(attr), "%s.", err_msg);
return 0;
}
static void
ethnl_module_fw_flash_ntf(struct net_device *dev,
enum ethtool_module_fw_flash_status status,
struct ethnl_module_fw_flash_ntf_params *ntf_params,
char *err_msg, char *sub_err_msg,
u64 done, u64 total)
{
struct sk_buff *skb;
void *hdr;
int ret;
if (ntf_params->closed_sock)
return;
skb = genlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
if (!skb)
return;
hdr = ethnl_unicast_put(skb, ntf_params->portid, ntf_params->seq,
ETHTOOL_MSG_MODULE_FW_FLASH_NTF);
if (!hdr)
goto err_skb;
ret = ethnl_fill_reply_header(skb, dev,
ETHTOOL_A_MODULE_FW_FLASH_HEADER);
if (ret < 0)
goto err_skb;
if (nla_put_u32(skb, ETHTOOL_A_MODULE_FW_FLASH_STATUS, status))
goto err_skb;
ret = ethnl_module_fw_flash_ntf_put_err(skb, err_msg, sub_err_msg);
if (ret < 0)
goto err_skb;
if (nla_put_uint(skb, ETHTOOL_A_MODULE_FW_FLASH_DONE, done))
goto err_skb;
if (nla_put_uint(skb, ETHTOOL_A_MODULE_FW_FLASH_TOTAL, total))
goto err_skb;
genlmsg_end(skb, hdr);
genlmsg_unicast(dev_net(dev), skb, ntf_params->portid);
return;
err_skb:
nlmsg_free(skb);
}
void ethnl_module_fw_flash_ntf_err(struct net_device *dev,
struct ethnl_module_fw_flash_ntf_params *params,
char *err_msg, char *sub_err_msg)
{
ethnl_module_fw_flash_ntf(dev, ETHTOOL_MODULE_FW_FLASH_STATUS_ERROR,
params, err_msg, sub_err_msg, 0, 0);
}
void
ethnl_module_fw_flash_ntf_start(struct net_device *dev,
struct ethnl_module_fw_flash_ntf_params *params)
{
ethnl_module_fw_flash_ntf(dev, ETHTOOL_MODULE_FW_FLASH_STATUS_STARTED,
params, NULL, NULL, 0, 0);
}
void
ethnl_module_fw_flash_ntf_complete(struct net_device *dev,
struct ethnl_module_fw_flash_ntf_params *params)
{
ethnl_module_fw_flash_ntf(dev, ETHTOOL_MODULE_FW_FLASH_STATUS_COMPLETED,
params, NULL, NULL, 0, 0);
}
void
ethnl_module_fw_flash_ntf_in_progress(struct net_device *dev,
struct ethnl_module_fw_flash_ntf_params *params,
u64 done, u64 total)
{
ethnl_module_fw_flash_ntf(dev,
ETHTOOL_MODULE_FW_FLASH_STATUS_IN_PROGRESS,
params, NULL, NULL, done, total);
}
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