ibv_is_fork_initialized3
Check if fork support (ibv_fork_init) is enabled
Usage
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#include <infiniband/verbs.h> enum ibv_fork_status { IBV_FORK_DISABLED, IBV_FORK_ENABLED, IBV_FORK_UNNEEDED, }; enum ibv_fork_status ibv_is_fork_initialized(void);
Overview
ibv_is_fork_initialized() checks whether libibverbs fork() support was enabled through the ibv_fork_init() verb.
Return value
ibv_is_fork_initialized() returns IBV_FORK_DISABLED if fork support is disabled, or IBV_FORK_ENABLED if enabled. IBV_FORK_UNNEEDED return value indicates that the kernel copies DMA pages on fork, hence a call to ibv_fork_init() is unneeded.
Notes
The IBV_FORK_UNNEEDED return value takes precedence over IBV_FORK_DISABLED and IBV_FORK_ENABLED. If the kernel supports copy-on-fork for DMA pages then IBV_FORK_UNNEEDED will be returned regardless of whether ibv_fork_init() was called or not.
Releases
3 releases since Debian 12 (Bookworm); the text changed 2 times.