This is a note to let you know that I've just added the patch titled
ethtool: linkstate: migrate linkstate functions to support multi-PHY setups
to the 6.12-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ethtool-linkstate-migrate-linkstate-functions-to-sup.patch
and it can be found in the queue-6.12 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 112bdd3123313bc0153be7d86df90f795bc1752b
Author: Oleksij Rempel <o.rempel@xxxxxxxxxxxxxx>
Date: Fri Jan 10 07:05:11 2025 +0100
ethtool: linkstate: migrate linkstate functions to support multi-PHY setups
[ Upstream commit fe55b1d401c697c2ef126fe3ebbcaa6885fced5a ]
Adapt linkstate_get_sqi() and linkstate_get_sqi_max() to take a
phy_device argument directly, enabling support for setups with
multiple PHYs. The previous assumption of a single PHY attached to
a net_device no longer holds.
Use ethnl_req_get_phydev() to identify the appropriate PHY device
for the operation. Update linkstate_prepare_data() and related
logic to accommodate this change, ensuring compatibility with
multi-PHY configurations.
Signed-off-by: Oleksij Rempel <o.rempel@xxxxxxxxxxxxxx>
Signed-off-by: Paolo Abeni <pabeni@xxxxxxxxxx>
Stable-dep-of: 637399bf7e77 ("net: ethtool: netlink: Allow NULL nlattrs when getting a phy_device")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/net/ethtool/linkstate.c b/net/ethtool/linkstate.c
index 34d76e87847d0..459cfea7652d4 100644
--- a/net/ethtool/linkstate.c
+++ b/net/ethtool/linkstate.c
@@ -26,9 +26,8 @@ const struct nla_policy ethnl_linkstate_get_policy[] = {
NLA_POLICY_NESTED(ethnl_header_policy_stats),
};
-static int linkstate_get_sqi(struct net_device *dev)
+static int linkstate_get_sqi(struct phy_device *phydev)
{
- struct phy_device *phydev = dev->phydev;
int ret;
if (!phydev)
@@ -46,9 +45,8 @@ static int linkstate_get_sqi(struct net_device *dev)
return ret;
}
-static int linkstate_get_sqi_max(struct net_device *dev)
+static int linkstate_get_sqi_max(struct phy_device *phydev)
{
- struct phy_device *phydev = dev->phydev;
int ret;
if (!phydev)
@@ -100,19 +98,28 @@ static int linkstate_prepare_data(const struct ethnl_req_info *req_base,
{
struct linkstate_reply_data *data = LINKSTATE_REPDATA(reply_base);
struct net_device *dev = reply_base->dev;
+ struct nlattr **tb = info->attrs;
+ struct phy_device *phydev;
int ret;
+ phydev = ethnl_req_get_phydev(req_base, tb[ETHTOOL_A_LINKSTATE_HEADER],
+ info->extack);
+ if (IS_ERR(phydev)) {
+ ret = PTR_ERR(phydev);
+ goto out;
+ }
+
ret = ethnl_ops_begin(dev);
if (ret < 0)
return ret;
data->link = __ethtool_get_link(dev);
- ret = linkstate_get_sqi(dev);
+ ret = linkstate_get_sqi(phydev);
if (linkstate_sqi_critical_error(ret))
goto out;
data->sqi = ret;
- ret = linkstate_get_sqi_max(dev);
+ ret = linkstate_get_sqi_max(phydev);
if (linkstate_sqi_critical_error(ret))
goto out;
data->sqi_max = ret;
@@ -127,9 +134,9 @@ static int linkstate_prepare_data(const struct ethnl_req_info *req_base,
sizeof(data->link_stats) / 8);
if (req_base->flags & ETHTOOL_FLAG_STATS) {
- if (dev->phydev)
+ if (phydev)
data->link_stats.link_down_events =
- READ_ONCE(dev->phydev->link_down_events);
+ READ_ONCE(phydev->link_down_events);
if (dev->ethtool_ops->get_link_ext_stats)
dev->ethtool_ops->get_link_ext_stats(dev,
