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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /net/ethtool/module.c
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'net/ethtool/module.c')
-rw-r--r--net/ethtool/module.c160
1 files changed, 160 insertions, 0 deletions
diff --git a/net/ethtool/module.c b/net/ethtool/module.c
new file mode 100644
index 0000000000..ceb575efc2
--- /dev/null
+++ b/net/ethtool/module.c
@@ -0,0 +1,160 @@
+// 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,
+ 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,
+};