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cc [ flag... ] file... -ldat [ library... ] #include <dat/udat.h>
The libdat library provides an application with the User Direct Access Programming Library (uDAPL) 1.2 functions to access the underlying RDMA-able interconnects. Different uDAPL service providers listed in the DAT static registry dat.conf(5) can be registered during runtime with the DAT library. After an application opens an interface adapter belonging to a particular service provider, all function calls will be redirected to that service provider's library.
The shared object libdat.so.1 provides the public interfaces defined below for applications. See Intro(3) for additional information on shared object interfaces.
| dat_cno_create dat_cno_free |
| dat_cno_modify_agent dat_cno_query |
| dat_cno_wait dat_cr_accept |
| dat_cr_handoff dat_cr_query |
| dat_cr_reject dat_ep_connect |
| dat_ep_create dat_ep_disconnect |
| dat_ep_dup_connect dat_ep_free |
| dat_ep_get_status dat_ep_modify |
| dat_ep_post_rdma_read dat_ep_post_rdma_write |
| dat_ep_post_recv dat_ep_post_send |
| dat_ep_query dat_ep_reset |
| dat_evd_clear_unwaitable dat_evd_create |
| dat_evd_dequeue dat_evd_disable |
| dat_evd_enable dat_evd_free |
| dat_evd_modify_cno dat_evd_post_se |
| dat_evd_query dat_evd_resize |
| dat_evd_set_unwaitable dat_evd_wait |
| dat_get_consumer_context dat_get_handle_type |
| dat_ia_close dat_ia_open |
| dat_ia_query dat_lmr_create |
| dat_lmr_free dat_lmr_query |
| dat_provider_fini dat_provider_init |
| dat_psp_create dat_psp_create_any |
| dat_psp_free dat_psp_query |
| dat_pz_create dat_pz_free |
| dat_pz_query dat_registry_list_providers |
| dat_rmr_bind dat_rmr_create |
| dat_rmr_free dat_rmr_query |
| dat_rsp_create dat_rsp_free |
| dat_rsp_query dat_set_consumer_context |
| dat_strerror |
| dat_ep_create_with_srq dat_ep_recv_query |
| dat_ep_set_watermark dat_lmr_sync_rdma_read |
| dat_lmr_sync_rdma_write dat_srq_create |
| dat_srq_free dat_srq_post_recv |
| dat_srq_query dat_srq_resize |
| dat_srq_set_lw |
The shared object libdat.so.1 also provides the public interfaces defined below for service providers.
| dat_registry_add_provider dat_registry_remove_provider |
shared object
64-bit shared object
See attributes(7) for descriptions of the following attributes:
| ATTRIBUTE TYPE ATTRIBUTE VALUE |
| Interface Stability Standard: uDAPL, 1.1, 1.2 |
| MT-Level Unsafe |
Intro (3), dat.conf (5), attributes (7), datadm (8)
The libdat library supports service providers written according to the uDAPL 1.2 specification. A service provider library has to be a dynamic loadable shared object with two public entry points exported:
| dat_provider_init dat_provider_fini |
In terms of installation, the service provider package should include a service_provider.conf(5) file. The datadm(8) administrative configuration program should be used to add and remove service provider's entries in the system-wide dat.conf(5).