Add reload limit to demand restrictions on reload actions. Reload limits supported: no_reset: No reset allowed, no down time allowed, no link flap and no configuration is lost. By default reload limit is unspecified and so no constraints on reload actions are required. Some combinations of action and limit are invalid. For example, driver can not reinitialize its entities without any downtime. The no_reset reload limit will have usecase in this patchset to implement restricted fw_activate on mlx5. Have the uapi parameter of reload limit ready for future support of multiselection.
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| @@ -311,6 +311,19 @@ enum devlink_reload_action { · 310 unmodified lines | ||
| 311 | 311 | DEVLINK_RELOAD_ACTION_MAX = __DEVLINK_RELOAD_ACTION_MAX - 1 |
| 312 | 312 | }; |
| 313 | 313 | |
| 314 | +enum devlink_reload_limit { | |
| 315 | + DEVLINK_RELOAD_LIMIT_UNSPEC, /* unspecified, no constraints */ | |
| 316 | + DEVLINK_RELOAD_LIMIT_NO_RESET, /* No reset allowed, no down time allowed, | |
| 317 | + * no link flap and no configuration is lost. | |
| 318 | + */ | |
| 319 | + | |
| 320 | + /* Add new reload limit above */ | |
| 321 | + __DEVLINK_RELOAD_LIMIT_MAX, | |
| 322 | + DEVLINK_RELOAD_LIMIT_MAX = __DEVLINK_RELOAD_LIMIT_MAX - 1 | |
| 323 | +}; | |
| 324 | + | |
| 325 | +#define DEVLINK_RELOAD_LIMITS_VALID_MASK (BIT(__DEVLINK_RELOAD_LIMIT_MAX) - 1) | |
| 326 | + | |
| 314 | 327 | enum devlink_attr { |
| 315 | 328 | /* don't change the order or add anything between, this is ABI! */ |
| 316 | 329 | DEVLINK_ATTR_UNSPEC, |
| @@ -505,6 +518,7 @@ enum devlink_attr { · 188 unmodified lines | ||
| 505 | 518 | |
| 506 | 519 | DEVLINK_ATTR_RELOAD_ACTION, /* u8 */ |
| 507 | 520 | DEVLINK_ATTR_RELOAD_ACTIONS_PERFORMED, /* bitfield32 */ |
| 521 | + DEVLINK_ATTR_RELOAD_LIMITS, /* bitfield32 */ | |
| 508 | 522 | |
| 509 | 523 | /* add new attributes above here, update the policy in devlink.c */ |
| 510 | 524 | |