Change Details

Introduce a new devmethod for handling any admin irq logic, such as serving asynchronous events, which cannot be run from an interrupt context. This method is called from within iflib's admin task, making it safe to sleep. Background: When working on porting the Amazon ENA driver to iflib, we faced an issue with processing the Asynchronous Event Notification Queues (AENQ). As the AENQ handler expects to sleep, we cannot simply register a filter in `iflib_irq_alloc_generic` and deal with it there. Furthermore, since iflib already sets up its own admin task, we think that it justifies creating a new devmethod and calling it from said place, rather than spawning a custom task on the driver side and running it in parallel. Submitted by: Artur Rojek <ar@semihalf.com> Obtained from: Semihalf Sponsored by: Amazon, Inc.

For interfaces with admin completion queues, introduce a new devmethod IFDI_ADMIN_COMPLETION_HANDLE and a corresponding flag IFLIB_HAS_ADMINCQ. This provides an option for handling any admin cq logic, which cannot be run from an interrupt context. Said method is called from within iflib's admin task, making it safe to sleep. Submitted by: Artur Rojek <ar@semihalf.com> Obtained from: Semihalf Sponsored by: Amazon, Inc.

Introduce a new devmethod for handling any admin irq logicFor interfaces with admin completion queues, such asintroduce a new devmethod serving asynchronous events, which cannot be run from an interrupt contextIFDI_ADMIN_COMPLETION_HANDLE and a corresponding flag IFLIB_HAS_ADMINCQ. This method is called from within iflib'sprovides an option for handling any admin taskcq logic, making it safe towhich cannot be sleeprun from an interrupt context. Background:Said method is called from within iflib's admin task, making it safe to When working on porting the Amazon ENA driver to iflib, we faced an issue with processing the Asynchronous Event Notification Queues (AENQ). As the AENQ handler expects to sleep, we cannot simply register a filter in `iflib_irq_alloc_generic` and deal with it there. Furthermore, since iflib already sets up its own admin task, we think that it justifies creating a new devmethod and calling it from said place, rather than spawning a custom task on the driver side and running it in parallelsleep. Submitted by: Artur Rojek <ar@semihalf.com> Obtained from: Semihalf Sponsored by: Amazon, Inc.