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net: sfp: Add helper to return the SFP bus name

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Knowing the bus name is helpful when we want to expose the link topology
to userspace, add a helper to return the SFP bus name.

Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Maxime Chevallier 2023-12-21 19:00:37 +01:00 committed by David S. Miller
parent 034fcc2103
commit dedd702a35
2 changed files with 17 additions and 0 deletions
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11
drivers/net/phy/sfp-bus.c
View File

@ -859,3 +859,14 @@ void sfp_unregister_socket(struct sfp_bus *bus)
sfp_bus_put(bus);
}
EXPORT_SYMBOL_GPL(sfp_unregister_socket);
const char *sfp_get_name(struct sfp_bus *bus)
{
ASSERT_RTNL();
if (bus->sfp_dev)
return dev_name(bus->sfp_dev);
return NULL;
}
EXPORT_SYMBOL_GPL(sfp_get_name);

6
include/linux/sfp.h
View File

@ -570,6 +570,7 @@ struct sfp_bus *sfp_bus_find_fwnode(const struct fwnode_handle *fwnode);
int sfp_bus_add_upstream(struct sfp_bus *bus, void *upstream,
const struct sfp_upstream_ops *ops);
void sfp_bus_del_upstream(struct sfp_bus *bus);
const char *sfp_get_name(struct sfp_bus *bus);
#else
static inline int sfp_parse_port(struct sfp_bus *bus,
const struct sfp_eeprom_id *id,
@ -648,6 +649,11 @@ static inline int sfp_bus_add_upstream(struct sfp_bus *bus, void *upstream,
static inline void sfp_bus_del_upstream(struct sfp_bus *bus)
{
}
static inline const char *sfp_get_name(struct sfp_bus *bus)
{
return NULL;
}
#endif
#endif