diff options
| author | Andrew Lunn <andrew@lunn.ch> | 2021-04-09 11:06:40 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-04-11 16:34:56 -0700 |
| commit | d740513f05a24b1a46722325974223980f068728 (patch) | |
| tree | 9b5eb129c83e0e4284a6dd5af52ad615e0b074cc /drivers/net/phy/sfp-bus.c | |
| parent | 96d971e307cc0e434f96329b42bbd98cfbca07d2 (diff) | |
phy: sfp: add netlink SFP support to generic SFP code
The new netlink API for reading SFP data requires a new op to be
implemented. The idea of the new netlink SFP code is that userspace is
responsible to parsing the EEPROM data and requesting pages, rather
than have the kernel decide what pages are interesting and returning
them. This allows greater flexibility for newer formats.
Currently the generic SFP code only supports simple SFPs. Allow i2c
address 0x50 and 0x51 to be accessed with page and bank must always be
0. This interface will later be extended when for example QSFP support
is added.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Vladyslav Tarasiuk <vladyslavt@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/phy/sfp-bus.c')
| -rw-r--r-- | drivers/net/phy/sfp-bus.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/net/phy/sfp-bus.c b/drivers/net/phy/sfp-bus.c index 2e11176c6b94..e61de66e973b 100644 --- a/drivers/net/phy/sfp-bus.c +++ b/drivers/net/phy/sfp-bus.c @@ -556,6 +556,26 @@ int sfp_get_module_eeprom(struct sfp_bus *bus, struct ethtool_eeprom *ee, EXPORT_SYMBOL_GPL(sfp_get_module_eeprom); /** + * sfp_get_module_eeprom_by_page() - Read a page from the SFP module EEPROM + * @bus: a pointer to the &struct sfp_bus structure for the sfp module + * @page: a &struct ethtool_module_eeprom + * @extack: extack for reporting problems + * + * Read an EEPROM page as specified by the supplied @page. See the + * documentation for &struct ethtool_module_eeprom for the page to be read. + * + * Returns 0 on success or a negative errno number. More error + * information might be provided via extack + */ +int sfp_get_module_eeprom_by_page(struct sfp_bus *bus, + const struct ethtool_module_eeprom *page, + struct netlink_ext_ack *extack) +{ + return bus->socket_ops->module_eeprom_by_page(bus->sfp, page, extack); +} +EXPORT_SYMBOL_GPL(sfp_get_module_eeprom_by_page); + +/** * sfp_upstream_start() - Inform the SFP that the network device is up * @bus: a pointer to the &struct sfp_bus structure for the sfp module * |