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phylink,sfp: negotiate interface format with MAC

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Negotiate the interface format with the MAC rather than requiring it to
be a fixed type specified solely by the SFP module.  This allows modules
that can work with several different interface signalling formats to
select a format compatible with the MAC - for example, a Fiber module
supporing Gigabit ethernet and faster connected to a Gigabit only MAC
needs to select the 1000BASE-X mode.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Russell King
2018-02-27 15:53:02 +00:00
committed by David S. Miller
parent 03145864bd
commit a9c79364df
3 changed files with 68 additions and 84 deletions
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18
include/linux/sfp.h
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@@ -422,10 +422,11 @@ struct sfp_upstream_ops {
#if IS_ENABLED(CONFIG_SFP)
int sfp_parse_port(struct sfp_bus *bus, const struct sfp_eeprom_id *id,
unsigned long *support);
phy_interface_t sfp_parse_interface(struct sfp_bus *bus,
const struct sfp_eeprom_id *id);
void sfp_parse_support(struct sfp_bus *bus, const struct sfp_eeprom_id *id,
unsigned long *support);
phy_interface_t sfp_select_interface(struct sfp_bus *bus,
const struct sfp_eeprom_id *id,
unsigned long *link_modes);
int sfp_get_module_info(struct sfp_bus *bus, struct ethtool_modinfo *modinfo);
int sfp_get_module_eeprom(struct sfp_bus *bus, struct ethtool_eeprom *ee,
@@ -444,18 +445,19 @@ static inline int sfp_parse_port(struct sfp_bus *bus,
return PORT_OTHER;
}
static inline phy_interface_t sfp_parse_interface(struct sfp_bus *bus,
const struct sfp_eeprom_id *id)
{
return PHY_INTERFACE_MODE_NA;
}
static inline void sfp_parse_support(struct sfp_bus *bus,
const struct sfp_eeprom_id *id,
unsigned long *support)
{
}
static inline phy_interface_t sfp_select_interface(struct sfp_bus *bus,
const struct sfp_eeprom_id *id,
unsigned long *link_modes)
{
return PHY_INTERFACE_MODE_NA;
}
static inline int sfp_get_module_info(struct sfp_bus *bus,
struct ethtool_modinfo *modinfo)
{