This adds support for Fast Link Down as new PHY tunable. Fast Link Down reduces the time until a link down event is reported for 1000BaseT. According to the standard it's 750ms what is too long for several use cases. v2: - add comment describing the constants
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| @@ -252,9 +252,17 @@ struct ethtool_tunable { · 251 unmodified lines | ||
| 252 | 252 | #define DOWNSHIFT_DEV_DEFAULT_COUNT 0xff |
| 253 | 253 | #define DOWNSHIFT_DEV_DISABLE 0 |
| 254 | 254 | |
| 255 | +/* Time in msecs after which link is reported as down | |
| 256 | + * 0 = lowest time supported by the PHY | |
| 257 | + * 0xff = off, link down detection according to standard | |
| 258 | + */ | |
| 259 | +#define ETHTOOL_PHY_FAST_LINK_DOWN_ON 0 | |
| 260 | +#define ETHTOOL_PHY_FAST_LINK_DOWN_OFF 0xff | |
| 261 | + | |
| 255 | 262 | enum phy_tunable_id { |
| 256 | 263 | ETHTOOL_PHY_ID_UNSPEC, |
| 257 | 264 | ETHTOOL_PHY_DOWNSHIFT, |
| 265 | + ETHTOOL_PHY_FAST_LINK_DOWN, | |
| 258 | 266 | /* |
| 259 | 267 | * Add your fresh new phy tunable attribute above and remember to update |
| 260 | 268 | * phy_tunable_strings[] in net/core/ethtool.c |