netdev - [PATCH net-next 4/7] net: sfp: provide sfp_get_module

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Message-Id: <E1uy9JI-00000005ji1-30CX@rmk-PC.armlinux.org.uk>
Date: Mon, 15 Sep 2025 14:32:00 +0100
From: "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
To: Andrew Lunn <andrew@...n.ch>,
	Heiner Kallweit <hkallweit1@...il.com>
Cc: "David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	linux-arm-msm@...r.kernel.org,
	"Marek Beh__n" <kabel@...nel.org>,
	netdev@...r.kernel.org,
	Paolo Abeni <pabeni@...hat.com>
Subject: [PATCH net-next 4/7] net: sfp: provide sfp_get_module_caps()

Provide a function to retrieve the current sfp_module_caps structure
so that upstreams can get the entire module support in one go.

Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
---
 drivers/net/phy/sfp-bus.c | 6 ++++++
 include/linux/sfp.h       | 7 +++++++
 2 files changed, 13 insertions(+)

diff --git a/drivers/net/phy/sfp-bus.c b/drivers/net/phy/sfp-bus.c
index b7275ecdf19b..f409943f1952 100644
--- a/drivers/net/phy/sfp-bus.c
+++ b/drivers/net/phy/sfp-bus.c
@@ -33,6 +33,12 @@ struct sfp_bus {
 	struct sfp_module_caps caps;
 };
 
+const struct sfp_module_caps *sfp_get_module_caps(struct sfp_bus *bus)
+{
+	return &bus->caps;
+}
+EXPORT_SYMBOL_GPL(sfp_get_module_caps);
+
 /**
  * sfp_parse_port() - Parse the EEPROM base ID, setting the port type
  * @bus: a pointer to the &struct sfp_bus structure for the sfp module
diff --git a/include/linux/sfp.h b/include/linux/sfp.h
index 5fb59cf49882..9f29fcad52be 100644
--- a/include/linux/sfp.h
+++ b/include/linux/sfp.h
@@ -576,6 +576,7 @@ struct sfp_upstream_ops {
 };
 
 #if IS_ENABLED(CONFIG_SFP)
+const struct sfp_module_caps *sfp_get_module_caps(struct sfp_bus *bus);
 int sfp_parse_port(struct sfp_bus *bus, const struct sfp_eeprom_id *id,
 		   unsigned long *support);
 bool sfp_may_have_phy(struct sfp_bus *bus, const struct sfp_eeprom_id *id);
@@ -600,6 +601,12 @@ int sfp_bus_add_upstream(struct sfp_bus *bus, void *upstream,
 void sfp_bus_del_upstream(struct sfp_bus *bus);
 const char *sfp_get_name(struct sfp_bus *bus);
 #else
+static inline const struct sfp_module_caps *
+sfp_get_module_caps(struct sfp_bus *bus)
+{
+	return NULL;
+}
+
 static inline int sfp_parse_port(struct sfp_bus *bus,
 				 const struct sfp_eeprom_id *id,
 				 unsigned long *support)
-- 
2.47.3