[PATCH net-next 05/12] net: ethtool: create and export ethtool_dev_mm_supported()
From: Vladimir Oltean <vladimir.oltean@nxp.com>
Date: 2023-02-16 23:22:17
Also in:
lkml
Subsystem:
networking drivers, networking [ethtool mac merge], networking [ethtool], networking [general], tc subsystem, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Vladimir Oltean, Andrew Lunn, Jamal Hadi Salim, Jiri Pirko, 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> --- include/linux/ethtool_netlink.h | 6 ++++++ net/ethtool/mm.c | 22 ++++++++++++++++++++++ net/sched/sch_mqprio.c | 1 + 3 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..87d9682efadd 100644
--- a/net/ethtool/mm.c
+++ b/net/ethtool/mm.c@@ -249,3 +249,25 @@ 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; +}
diff --git a/net/sched/sch_mqprio.c b/net/sched/sch_mqprio.c
index 48ed87b91086..f0232783ced7 100644
--- a/net/sched/sch_mqprio.c
+++ b/net/sched/sch_mqprio.c@@ -5,6 +5,7 @@ * Copyright (c) 2010 John Fastabend <john.r.fastabend@intel.com> */ +#include <linux/ethtool_netlink.h> #include <linux/types.h> #include <linux/slab.h> #include <linux/kernel.h>
--
2.34.1