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Message-Id: <20230219135309.594188-6-vladimir.oltean@nxp.com>
Date: Sun, 19 Feb 2023 15:53:01 +0200
From: Vladimir Oltean <vladimir.oltean@....com>
To: netdev@...r.kernel.org
Cc: "David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
Jamal Hadi Salim <jhs@...atatu.com>,
Cong Wang <xiyou.wangcong@...il.com>,
Jiri Pirko <jiri@...nulli.us>,
Vinicius Costa Gomes <vinicius.gomes@...el.com>,
Kurt Kanzenbach <kurt@...utronix.de>,
Gerhard Engleder <gerhard@...leder-embedded.com>,
Amritha Nambiar <amritha.nambiar@...el.com>,
Claudiu Manoil <claudiu.manoil@....com>,
Alexandre Belloni <alexandre.belloni@...tlin.com>,
UNGLinuxDriver@...rochip.com, Andrew Lunn <andrew@...n.ch>,
Florian Fainelli <f.fainelli@...il.com>,
Ferenc Fejes <ferenc.fejes@...csson.com>,
Xiaoliang Yang <xiaoliang.yang_1@....com>,
Roger Quadros <rogerq@...nel.org>,
Pranavi Somisetty <pranavi.somisetty@....com>,
Harini Katakam <harini.katakam@....com>,
linux-kernel@...r.kernel.org,
Giuseppe Cavallaro <peppe.cavallaro@...com>,
Alexandre Torgue <alexandre.torgue@...s.st.com>,
Jose Abreu <joabreu@...opsys.com>,
Wong Vee Khee <vee.khee.wong@...ux.intel.com>,
Michael Sit Wei Hong <michael.wei.hong.sit@...el.com>,
Jacob Keller <jacob.e.keller@...el.com>
Subject: [PATCH v2 net-next 05/12] net: ethtool: create and export ethtool_dev_mm_supported()
Create a wrapper over __ethtool_dev_mm_supported() which also calls
ethnl_ops_begin() and ethnl_ops_complete(). It can be used by other code
layers, such as tc, to make sure that preemptible TCs are supported
(this is true if an underlying MAC Merge layer exists).
Signed-off-by: Vladimir Oltean <vladimir.oltean@....com>
---
v1->v2:
- don't touch net/sched/sch_mqprio.c in this patch
- add missing EXPORT_SYMBOL_GPL(ethtool_dev_mm_supported)
include/linux/ethtool_netlink.h | 6 ++++++
net/ethtool/mm.c | 23 +++++++++++++++++++++++
2 files changed, 29 insertions(+)
diff --git a/include/linux/ethtool_netlink.h b/include/linux/ethtool_netlink.h
index 17003b385756..fae0dfb9a9c8 100644
--- a/include/linux/ethtool_netlink.h
+++ b/include/linux/ethtool_netlink.h
@@ -39,6 +39,7 @@ void ethtool_aggregate_pause_stats(struct net_device *dev,
struct ethtool_pause_stats *pause_stats);
void ethtool_aggregate_rmon_stats(struct net_device *dev,
struct ethtool_rmon_stats *rmon_stats);
+bool ethtool_dev_mm_supported(struct net_device *dev);
#else
static inline int ethnl_cable_test_alloc(struct phy_device *phydev, u8 cmd)
@@ -112,5 +113,10 @@ ethtool_aggregate_rmon_stats(struct net_device *dev,
{
}
+static inline bool ethtool_dev_mm_supported(struct net_device *dev)
+{
+ return false;
+}
+
#endif /* IS_ENABLED(CONFIG_ETHTOOL_NETLINK) */
#endif /* _LINUX_ETHTOOL_NETLINK_H_ */
diff --git a/net/ethtool/mm.c b/net/ethtool/mm.c
index fce3cc2734f9..e00d7d5cea7e 100644
--- a/net/ethtool/mm.c
+++ b/net/ethtool/mm.c
@@ -249,3 +249,26 @@ bool __ethtool_dev_mm_supported(struct net_device *dev)
return !ret;
}
+
+bool ethtool_dev_mm_supported(struct net_device *dev)
+{
+ const struct ethtool_ops *ops = dev->ethtool_ops;
+ bool supported;
+ int ret;
+
+ ASSERT_RTNL();
+
+ if (!ops)
+ return false;
+
+ ret = ethnl_ops_begin(dev);
+ if (ret < 0)
+ return false;
+
+ supported = __ethtool_dev_mm_supported(dev);
+
+ ethnl_ops_complete(dev);
+
+ return supported;
+}
+EXPORT_SYMBOL_GPL(ethtool_dev_mm_supported);
--
2.34.1
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