diff options
| -rw-r--r-- | drivers/net/phy/phy-caps.h | 5 | ||||
| -rw-r--r-- | drivers/net/phy/phy-core.c | 36 | ||||
| -rw-r--r-- | drivers/net/phy/phy_caps.c | 45 |
3 files changed, 65 insertions, 21 deletions
diff --git a/drivers/net/phy/phy-caps.h b/drivers/net/phy/phy-caps.h index 1217686f1f91..8833798f141f 100644 --- a/drivers/net/phy/phy-caps.h +++ b/drivers/net/phy/phy-caps.h @@ -45,5 +45,10 @@ size_t phy_caps_speeds(unsigned int *speeds, size_t size, void phy_caps_linkmode_max_speed(u32 max_speed, unsigned long *linkmodes); bool phy_caps_valid(int speed, int duplex, const unsigned long *linkmodes); +const struct link_capabilities * +phy_caps_lookup_by_linkmode(const unsigned long *linkmodes); + +const struct link_capabilities * +phy_caps_lookup_by_linkmode_rev(const unsigned long *linkmodes, bool fdx_only); #endif /* __PHY_CAPS_H */ diff --git a/drivers/net/phy/phy-core.c b/drivers/net/phy/phy-core.c index 741350d7d29c..a1caa0f313ec 100644 --- a/drivers/net/phy/phy-core.c +++ b/drivers/net/phy/phy-core.c @@ -469,16 +469,15 @@ EXPORT_SYMBOL_GPL(phy_resolve_aneg_pause); void phy_resolve_aneg_linkmode(struct phy_device *phydev) { __ETHTOOL_DECLARE_LINK_MODE_MASK(common); - int i; + const struct link_capabilities *c; linkmode_and(common, phydev->lp_advertising, phydev->advertising); - for (i = 0; i < ARRAY_SIZE(settings); i++) - if (test_bit(settings[i].bit, common)) { - phydev->speed = settings[i].speed; - phydev->duplex = settings[i].duplex; - break; - } + c = phy_caps_lookup_by_linkmode(common); + if (c) { + phydev->speed = c->speed; + phydev->duplex = c->duplex; + } phy_resolve_aneg_pause(phydev); } @@ -496,7 +495,8 @@ EXPORT_SYMBOL_GPL(phy_resolve_aneg_linkmode); void phy_check_downshift(struct phy_device *phydev) { __ETHTOOL_DECLARE_LINK_MODE_MASK(common); - int i, speed = SPEED_UNKNOWN; + const struct link_capabilities *c; + int speed = SPEED_UNKNOWN; phydev->downshifted_rate = 0; @@ -506,11 +506,9 @@ void phy_check_downshift(struct phy_device *phydev) linkmode_and(common, phydev->lp_advertising, phydev->advertising); - for (i = 0; i < ARRAY_SIZE(settings); i++) - if (test_bit(settings[i].bit, common)) { - speed = settings[i].speed; - break; - } + c = phy_caps_lookup_by_linkmode(common); + if (c) + speed = c->speed; if (speed == SPEED_UNKNOWN || phydev->speed >= speed) return; @@ -524,17 +522,13 @@ void phy_check_downshift(struct phy_device *phydev) static int phy_resolve_min_speed(struct phy_device *phydev, bool fdx_only) { __ETHTOOL_DECLARE_LINK_MODE_MASK(common); - int i = ARRAY_SIZE(settings); + const struct link_capabilities *c; linkmode_and(common, phydev->lp_advertising, phydev->advertising); - while (--i >= 0) { - if (test_bit(settings[i].bit, common)) { - if (fdx_only && settings[i].duplex != DUPLEX_FULL) - continue; - return settings[i].speed; - } - } + c = phy_caps_lookup_by_linkmode_rev(common, fdx_only); + if (c) + return c->speed; return SPEED_UNKNOWN; } diff --git a/drivers/net/phy/phy_caps.c b/drivers/net/phy/phy_caps.c index 4ee8c25c8521..c39f38c12ef2 100644 --- a/drivers/net/phy/phy_caps.c +++ b/drivers/net/phy/phy_caps.c @@ -126,6 +126,51 @@ size_t phy_caps_speeds(unsigned int *speeds, size_t size, } /** + * phy_caps_lookup_by_linkmode() - Lookup the fastest matching link_capabilities + * @linkmodes: Linkmodes to match against + * + * Returns: The highest-speed link_capabilities that intersects the given + * linkmodes. In case several DUPLEX_ options exist at that speed, + * DUPLEX_FULL is matched first. NULL is returned if no match. + */ +const struct link_capabilities * +phy_caps_lookup_by_linkmode(const unsigned long *linkmodes) +{ + struct link_capabilities *lcap; + + for_each_link_caps_desc_speed(lcap) + if (linkmode_intersects(lcap->linkmodes, linkmodes)) + return lcap; + + return NULL; +} + +/** + * phy_caps_lookup_by_linkmode_rev() - Lookup the slowest matching link_capabilities + * @linkmodes: Linkmodes to match against + * @fdx_only: Full duplex match only when set + * + * Returns: The lowest-speed link_capabilities that intersects the given + * linkmodes. When set, fdx_only will ignore half-duplex matches. + * NULL is returned if no match. + */ +const struct link_capabilities * +phy_caps_lookup_by_linkmode_rev(const unsigned long *linkmodes, bool fdx_only) +{ + struct link_capabilities *lcap; + + for_each_link_caps_asc_speed(lcap) { + if (fdx_only && lcap->duplex != DUPLEX_FULL) + continue; + + if (linkmode_intersects(lcap->linkmodes, linkmodes)) + return lcap; + } + + return NULL; +} + +/** * phy_caps_linkmode_max_speed() - Clamp a linkmodes set to a max speed * @max_speed: Speed limit for the linkmode set * @linkmodes: Linkmodes to limit |