rpma_utils_get_ibv_context - obtain an RDMA device context by IP address
#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);
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
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.
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
rpma_peer_new(3), rpma_utils_ibv_context_is_odp_capable(3), librpma(7) and https://pmem.io/rpma/
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