[PATCH v3 net-next 02/13] net: ethtool: create and export ethtool_dev_mm_supported()
From: Vladimir Oltean <vladimir.oltean@nxp.com>
Date: 2023-02-20 12:24:19
Also in:
lkml
Subsystem:
networking drivers, networking [ethtool mac merge], networking [ethtool], networking [general], the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Vladimir Oltean, Andrew Lunn, Linus Torvalds
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@nxp.com> Reviewed-by: Ferenc Fejes <redacted> --- v2->v3: none 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