Update Linux to v5.10.109
Sourced from [1]
[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.10.109.tar.xz
Change-Id: I19bca9fc6762d4e63bcf3e4cba88bbe560d9c76c
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/net/ethtool/linkstate.c b/net/ethtool/linkstate.c
new file mode 100644
index 0000000..fb676f3
--- /dev/null
+++ b/net/ethtool/linkstate.c
@@ -0,0 +1,182 @@
+// SPDX-License-Identifier: GPL-2.0-only
+
+#include "netlink.h"
+#include "common.h"
+#include <linux/phy.h>
+
+struct linkstate_req_info {
+ struct ethnl_req_info base;
+};
+
+struct linkstate_reply_data {
+ struct ethnl_reply_data base;
+ int link;
+ int sqi;
+ int sqi_max;
+ bool link_ext_state_provided;
+ struct ethtool_link_ext_state_info ethtool_link_ext_state_info;
+};
+
+#define LINKSTATE_REPDATA(__reply_base) \
+ container_of(__reply_base, struct linkstate_reply_data, base)
+
+const struct nla_policy ethnl_linkstate_get_policy[] = {
+ [ETHTOOL_A_LINKSTATE_HEADER] =
+ NLA_POLICY_NESTED(ethnl_header_policy),
+};
+
+static int linkstate_get_sqi(struct net_device *dev)
+{
+ struct phy_device *phydev = dev->phydev;
+ int ret;
+
+ if (!phydev)
+ return -EOPNOTSUPP;
+
+ mutex_lock(&phydev->lock);
+ if (!phydev->drv || !phydev->drv->get_sqi)
+ ret = -EOPNOTSUPP;
+ else
+ ret = phydev->drv->get_sqi(phydev);
+ mutex_unlock(&phydev->lock);
+
+ return ret;
+}
+
+static int linkstate_get_sqi_max(struct net_device *dev)
+{
+ struct phy_device *phydev = dev->phydev;
+ int ret;
+
+ if (!phydev)
+ return -EOPNOTSUPP;
+
+ mutex_lock(&phydev->lock);
+ if (!phydev->drv || !phydev->drv->get_sqi_max)
+ ret = -EOPNOTSUPP;
+ else
+ ret = phydev->drv->get_sqi_max(phydev);
+ mutex_unlock(&phydev->lock);
+
+ return ret;
+};
+
+static int linkstate_get_link_ext_state(struct net_device *dev,
+ struct linkstate_reply_data *data)
+{
+ int err;
+
+ if (!dev->ethtool_ops->get_link_ext_state)
+ return -EOPNOTSUPP;
+
+ err = dev->ethtool_ops->get_link_ext_state(dev, &data->ethtool_link_ext_state_info);
+ if (err)
+ return err;
+
+ data->link_ext_state_provided = true;
+
+ return 0;
+}
+
+static int linkstate_prepare_data(const struct ethnl_req_info *req_base,
+ struct ethnl_reply_data *reply_base,
+ struct genl_info *info)
+{
+ struct linkstate_reply_data *data = LINKSTATE_REPDATA(reply_base);
+ struct net_device *dev = reply_base->dev;
+ int ret;
+
+ ret = ethnl_ops_begin(dev);
+ if (ret < 0)
+ return ret;
+ data->link = __ethtool_get_link(dev);
+
+ ret = linkstate_get_sqi(dev);
+ if (ret < 0 && ret != -EOPNOTSUPP)
+ goto out;
+ data->sqi = ret;
+
+ ret = linkstate_get_sqi_max(dev);
+ if (ret < 0 && ret != -EOPNOTSUPP)
+ goto out;
+ data->sqi_max = ret;
+
+ if (dev->flags & IFF_UP) {
+ ret = linkstate_get_link_ext_state(dev, data);
+ if (ret < 0 && ret != -EOPNOTSUPP && ret != -ENODATA)
+ goto out;
+ }
+
+ ret = 0;
+out:
+ ethnl_ops_complete(dev);
+ return ret;
+}
+
+static int linkstate_reply_size(const struct ethnl_req_info *req_base,
+ const struct ethnl_reply_data *reply_base)
+{
+ struct linkstate_reply_data *data = LINKSTATE_REPDATA(reply_base);
+ int len;
+
+ len = nla_total_size(sizeof(u8)) /* LINKSTATE_LINK */
+ + 0;
+
+ if (data->sqi != -EOPNOTSUPP)
+ len += nla_total_size(sizeof(u32));
+
+ if (data->sqi_max != -EOPNOTSUPP)
+ len += nla_total_size(sizeof(u32));
+
+ if (data->link_ext_state_provided)
+ len += nla_total_size(sizeof(u8)); /* LINKSTATE_EXT_STATE */
+
+ if (data->ethtool_link_ext_state_info.__link_ext_substate)
+ len += nla_total_size(sizeof(u8)); /* LINKSTATE_EXT_SUBSTATE */
+
+ return len;
+}
+
+static int linkstate_fill_reply(struct sk_buff *skb,
+ const struct ethnl_req_info *req_base,
+ const struct ethnl_reply_data *reply_base)
+{
+ struct linkstate_reply_data *data = LINKSTATE_REPDATA(reply_base);
+
+ if (data->link >= 0 &&
+ nla_put_u8(skb, ETHTOOL_A_LINKSTATE_LINK, !!data->link))
+ return -EMSGSIZE;
+
+ if (data->sqi != -EOPNOTSUPP &&
+ nla_put_u32(skb, ETHTOOL_A_LINKSTATE_SQI, data->sqi))
+ return -EMSGSIZE;
+
+ if (data->sqi_max != -EOPNOTSUPP &&
+ nla_put_u32(skb, ETHTOOL_A_LINKSTATE_SQI_MAX, data->sqi_max))
+ return -EMSGSIZE;
+
+ if (data->link_ext_state_provided) {
+ if (nla_put_u8(skb, ETHTOOL_A_LINKSTATE_EXT_STATE,
+ data->ethtool_link_ext_state_info.link_ext_state))
+ return -EMSGSIZE;
+
+ if (data->ethtool_link_ext_state_info.__link_ext_substate &&
+ nla_put_u8(skb, ETHTOOL_A_LINKSTATE_EXT_SUBSTATE,
+ data->ethtool_link_ext_state_info.__link_ext_substate))
+ return -EMSGSIZE;
+ }
+
+ return 0;
+}
+
+const struct ethnl_request_ops ethnl_linkstate_request_ops = {
+ .request_cmd = ETHTOOL_MSG_LINKSTATE_GET,
+ .reply_cmd = ETHTOOL_MSG_LINKSTATE_GET_REPLY,
+ .hdr_attr = ETHTOOL_A_LINKSTATE_HEADER,
+ .req_info_size = sizeof(struct linkstate_req_info),
+ .reply_data_size = sizeof(struct linkstate_reply_data),
+
+ .prepare_data = linkstate_prepare_data,
+ .reply_size = linkstate_reply_size,
+ .fill_reply = linkstate_fill_reply,
+};