xref: /titanic_52/usr/src/man/man3dat/dat_lmr_free.3dat (revision 385cc6b4ad1792caef3f84eb61eed3f27085801f)
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This manual page is derived from the DAT/uDAPL 1.2 specification.
Portions Copyright (c) 2007, Sun Microsystems, Inc. All Rights Reserved.
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When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE. If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner]
DAT_LMR_FREE 3DAT "Jul 16, 2004"
NAME
dat_lmr_free - destroy an instance of the LMR
SYNOPSIS

cc [ flag.\|.\|. ] file.\|.\|. -ldat [ library.\|.\|. ]
#include <dat/udat.h>

DAT_RETURN
 dat_lmr_free (
 IN DAT_LMR_HANDLE lmr_handle
 )
PARAMETERS
lmr_handle:

Handle for an instance of LMR to be destroyed.

DESCRIPTION

The dat_lmr_free() function destroys an instance of the LMR. The LMR cannot be destroyed if it is in use by an RMR. The operation does not deallocate the memory region or unpin memory on a host.

Use of the handle of the destroyed LMR in any subsequent operation except for dat_lmr_free() fails. Any DTO operation that uses the destroyed LMR after the dat_lmr_free() is completed shall fail and report a protection violation. The use of rmr_context of the destroyed LMR by a remote peer for an RDMA DTO results in an error and broken connection on which it was used. Any remote RDMA operation that uses the destroyed LMR rmr_context, whose Transport-specific request arrived to the local host after the dat_lmr_free() has completed, fails and reports a protection violation. Remote RDMA operation that uses the destroyed LMR rmr_context, whose Transport-specific request arrived to the local host prior to the dat_lmr_free() returns, might or might not complete successfully. If it fails, DAT_DTO_ERR_REMOTE_ACCESS is reported in DAT_DTO_COMPLETION_STATUS for the remote RDMA DTO and the connection is broken.

RETURN VALUES
DAT_SUCCESS

The operation was successful.

DAT_INVALID_HANDLE

The lmr_handle parameter is invalid.

DAT_INVALID_STATE

Parameter in an invalid state; LMR is in use by an RMR instance.

ATTRIBUTES

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPE ATTRIBUTE VALUE
Interface Stability Standard: uDAPL, 1.1, 1.2
MT-Level Unsafe
SEE ALSO

libdat(3LIB), attributes(5)