ibv_alloc_pd, ibv_dealloc_pd
Allocates or deallocates a protection domain (PD).
Syntax
#include <rdma/verbs.h>
struct ibv_pd *ibv_alloc_pd(struct ibv_context *context)
int ibv_dealloc_pd(struct ibv_pd *pd)Description
The ibv_alloc_pd() function allocates a PD for the remote device memory access (RDMA) device context, the context parameter. The ibv_dealloc_pd() function deallocates PD, the pd parameter.
Note: The ibv_dealloc_pd() function
fails if any other RDMA resource is still associated with the PD that
must be freed.
Parameters
| Item | Descriptor |
|---|---|
| context | The ibv_context struct for the ibv_open_device() function. |
Return Value
The ibv_alloc_pd() function returns a pointer to the allocated PD, or NULL if the request fails. The ibv_dealloc_pd() function returns 0 on success, or the value of errno on failure (which indicates the reason for failure).