NAME¶
rpma_utils_get_ibv_context - obtain an RDMA device context by IP address
SYNOPSIS¶
#include <librpma.h>
struct ibv_context;
enum rpma_util_ibv_context_type {
RPMA_UTIL_IBV_CONTEXT_LOCAL,¶
RPMA_UTIL_IBV_CONTEXT_REMOTE¶
int rpma_utils_get_ibv_context(const char *addr, enum
rpma_util_ibv_context_type type, struct ibv_context **dev_ptr);
DESCRIPTION¶
rpma_utils_get_ibv_context() obtains an RDMA device context by the given
IPv4/IPv6 address (either local or remote) using the TCP RDMA port space
(RDMA_PS_TCP) - reliable, connection-oriented and message-based QP
communication. Possible values of the 'type' argument:
- RPMA_UTIL_IBV_CONTEXT_LOCAL - lookup for a device based on the given local
address
- RPMA_UTIL_IBV_CONTEXT_REMOTE - lookup for a device based on the given
remote address
RETURN VALUE¶
The rpma_utils_get_ibv_context() function returns 0 on success or a
negative error code on failure. rpma_utils_get_ibv_context() does not
set *dev_ptr value on failure.
ERRORS¶
rpma_utils_get_ibv_context() can fail with the following errors:
- RPMA_E_INVAL - addr or dev_ptr is NULL or type is unknown
- RPMA_E_NOMEM - out of memory
- RPMA_E_PROVIDER - rdma_getaddrinfo(), rdma_create_id(),
rdma_bind_addr() or rdma_resolve_addr() failed, the exact
cause of the error can be read from the log
