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| author | Maxime Chevallier <maxime.chevallier@bootlin.com> | 2024-08-21 17:09:58 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2024-08-23 13:04:34 +0100 |
| commit | 0a2f7de0f3b96c4a30e56d2c79f8d812f89599a1 (patch) | |
| tree | b832b201de1e60accc9aed5e89535c37ed6e61e7 /include/linux/sfp.h | |
| parent | b2db6f4ace72e71fa09b8d1354f8ac9854140d74 (diff) | |
| download | lwn-0a2f7de0f3b96c4a30e56d2c79f8d812f89599a1.tar.gz lwn-0a2f7de0f3b96c4a30e56d2c79f8d812f89599a1.zip | |
net: sfp: Add helper to return the SFP bus name
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.
This call will always be made while holding the RTNL which ensures
that the SFP driver won't unbind from the device. The returned pointer
to the bus name will only be used while RTNL is held.
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Suggested-by: "Russell King (Oracle)" <linux@armlinux.org.uk>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Tested-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/sfp.h')
| -rw-r--r-- | include/linux/sfp.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/sfp.h b/include/linux/sfp.h index 54abb4d22b2e..60c65cea74f6 100644 --- a/include/linux/sfp.h +++ b/include/linux/sfp.h @@ -576,6 +576,7 @@ 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, @@ -654,6 +655,11 @@ 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 |