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/*
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* Copyright (c) 2004-2009 Voltaire, Inc. All rights reserved.
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* Copyright (c) 2002-2009 Mellanox Technologies LTD. All rights reserved.
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* Copyright (c) 1996-2003 Intel Corporation. All rights reserved.
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* Copyright (c) 2009 HNR Consulting. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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*/
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/*
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* Abstract:
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* Implementation of osm_mcast_tbl_t.
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* This object represents a multicast forwarding table.
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* This object is part of the opensm family of objects.
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*/
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#if HAVE_CONFIG_H
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# include <config.h>
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#endif /* HAVE_CONFIG_H */
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#include <stdlib.h>
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#include <string.h>
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#include <complib/cl_math.h>
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#include <iba/ib_types.h>
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#include <opensm/osm_file_ids.h>
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#define FILE_ID OSM_FILE_MCAST_TBL_C
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#include <opensm/osm_mcast_tbl.h>
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void osm_mcast_tbl_init(IN osm_mcast_tbl_t * p_tbl, IN uint8_t num_ports,
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IN uint16_t capacity)
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{
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CL_ASSERT(p_tbl);
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CL_ASSERT(num_ports);
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memset(p_tbl, 0, sizeof(*p_tbl));
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p_tbl->max_block_in_use = -1;
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if (capacity == 0) {
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/*
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This switch apparently doesn't support multicast.
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Everything is initialized to zero already, so return.
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*/
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return;
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}
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p_tbl->num_entries = capacity;
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p_tbl->num_ports = num_ports;
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p_tbl->max_position =
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(uint8_t) ((ROUNDUP(num_ports, IB_MCAST_MASK_SIZE) /
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IB_MCAST_MASK_SIZE) - 1);
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p_tbl->max_block = (uint16_t) ((ROUNDUP(p_tbl->num_entries,
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IB_MCAST_BLOCK_SIZE) /
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IB_MCAST_BLOCK_SIZE) - 1);
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}
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void osm_mcast_tbl_destroy(IN osm_mcast_tbl_t * p_tbl)
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{
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free(p_tbl->p_mask_tbl);
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}
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void osm_mcast_tbl_set(IN osm_mcast_tbl_t * p_tbl, IN uint16_t mlid_ho,
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IN uint8_t port)
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{
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unsigned mlid_offset, mask_offset, bit_mask;
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int16_t block_num;
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CL_ASSERT(p_tbl && p_tbl->p_mask_tbl);
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CL_ASSERT(mlid_ho >= IB_LID_MCAST_START_HO);
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CL_ASSERT(mlid_ho <= p_tbl->max_mlid_ho);
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mlid_offset = mlid_ho - IB_LID_MCAST_START_HO;
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mask_offset = port / IB_MCAST_MASK_SIZE;
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bit_mask = cl_ntoh16((uint16_t) (1 << (port % IB_MCAST_MASK_SIZE)));
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(*p_tbl->p_mask_tbl)[mlid_offset][mask_offset] |= bit_mask;
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block_num = (int16_t) (mlid_offset / IB_MCAST_BLOCK_SIZE);
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if (block_num > p_tbl->max_block_in_use)
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p_tbl->max_block_in_use = (uint16_t) block_num;
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}
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int osm_mcast_tbl_realloc(IN osm_mcast_tbl_t * p_tbl, IN unsigned mlid_offset)
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{
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size_t mft_depth, size;
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uint16_t (*p_mask_tbl)[][IB_MCAST_POSITION_MAX + 1];
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if (mlid_offset < p_tbl->mft_depth)
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goto done;
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/*
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The number of bytes needed in the mask table is:
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The (maximum bit mask 'position' + 1) times the
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number of bytes in each bit mask times the
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number of MLIDs supported by the table.
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We must always allocate the array with the maximum position
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since it is (and must be) defined that way the table structure
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in order to create a pointer to a two dimensional array.
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*/
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mft_depth = (mlid_offset / IB_MCAST_BLOCK_SIZE + 1) * IB_MCAST_BLOCK_SIZE;
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size = mft_depth * (IB_MCAST_POSITION_MAX + 1) * IB_MCAST_MASK_SIZE / 8;
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p_mask_tbl = realloc(p_tbl->p_mask_tbl, size);
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if (!p_mask_tbl)
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return -1;
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memset((uint8_t *)p_mask_tbl + p_tbl->mft_depth * (IB_MCAST_POSITION_MAX + 1) * IB_MCAST_MASK_SIZE / 8,
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0,
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size - p_tbl->mft_depth * (IB_MCAST_POSITION_MAX + 1) * IB_MCAST_MASK_SIZE / 8);
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p_tbl->p_mask_tbl = p_mask_tbl;
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p_tbl->mft_depth = mft_depth;
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done:
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p_tbl->max_mlid_ho = mlid_offset + IB_LID_MCAST_START_HO;
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return 0;
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}
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boolean_t osm_mcast_tbl_is_port(IN const osm_mcast_tbl_t * p_tbl,
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IN uint16_t mlid_ho, IN uint8_t port_num)
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{
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unsigned mlid_offset, mask_offset, bit_mask;
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CL_ASSERT(p_tbl);
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if (p_tbl->p_mask_tbl) {
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CL_ASSERT(port_num <=
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(p_tbl->max_position + 1) * IB_MCAST_MASK_SIZE);
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CL_ASSERT(mlid_ho >= IB_LID_MCAST_START_HO);
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CL_ASSERT(mlid_ho <= p_tbl->max_mlid_ho);
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mlid_offset = mlid_ho - IB_LID_MCAST_START_HO;
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mask_offset = port_num / IB_MCAST_MASK_SIZE;
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bit_mask = cl_ntoh16((uint16_t)
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(1 << (port_num % IB_MCAST_MASK_SIZE)));
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return (((*p_tbl->
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p_mask_tbl)[mlid_offset][mask_offset] & bit_mask) ==
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bit_mask);
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}
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return FALSE;
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}
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boolean_t osm_mcast_tbl_is_any_port(IN const osm_mcast_tbl_t * p_tbl,
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IN uint16_t mlid_ho)
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{
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unsigned mlid_offset;
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uint8_t position;
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uint16_t result = 0;
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CL_ASSERT(p_tbl);
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if (p_tbl->p_mask_tbl) {
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CL_ASSERT(mlid_ho >= IB_LID_MCAST_START_HO);
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CL_ASSERT(mlid_ho <= p_tbl->max_mlid_ho);
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mlid_offset = mlid_ho - IB_LID_MCAST_START_HO;
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for (position = 0; position <= p_tbl->max_position; position++)
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result |= (*p_tbl->p_mask_tbl)[mlid_offset][position];
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}
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return (result != 0);
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}
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ib_api_status_t osm_mcast_tbl_set_block(IN osm_mcast_tbl_t * p_tbl,
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IN const ib_net16_t * p_block,
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IN int16_t block_num,
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IN uint8_t position)
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{
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uint32_t i;
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uint16_t mlid_start_ho;
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CL_ASSERT(p_tbl);
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CL_ASSERT(p_block);
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if (block_num > p_tbl->max_block)
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return IB_INVALID_PARAMETER;
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if (position > p_tbl->max_position)
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return IB_INVALID_PARAMETER;
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mlid_start_ho = (uint16_t) (block_num * IB_MCAST_BLOCK_SIZE);
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if (mlid_start_ho + IB_MCAST_BLOCK_SIZE - 1 > p_tbl->mft_depth)
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return IB_INVALID_PARAMETER;
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for (i = 0; i < IB_MCAST_BLOCK_SIZE; i++)
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(*p_tbl->p_mask_tbl)[mlid_start_ho + i][position] = p_block[i];
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if (block_num > p_tbl->max_block_in_use)
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p_tbl->max_block_in_use = (uint16_t) block_num;
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return IB_SUCCESS;
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}
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void osm_mcast_tbl_clear_mlid(IN osm_mcast_tbl_t * p_tbl, IN uint16_t mlid_ho)
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{
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unsigned mlid_offset;
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CL_ASSERT(p_tbl);
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CL_ASSERT(mlid_ho >= IB_LID_MCAST_START_HO);
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mlid_offset = mlid_ho - IB_LID_MCAST_START_HO;
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if (p_tbl->p_mask_tbl && mlid_offset < p_tbl->mft_depth)
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memset((uint8_t *)p_tbl->p_mask_tbl + mlid_offset * (IB_MCAST_POSITION_MAX + 1) * IB_MCAST_MASK_SIZE / 8,
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0,
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(IB_MCAST_POSITION_MAX + 1) * IB_MCAST_MASK_SIZE / 8);
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}
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boolean_t osm_mcast_tbl_get_block(IN osm_mcast_tbl_t * p_tbl,
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IN int16_t block_num, IN uint8_t position,
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OUT ib_net16_t * p_block)
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{
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uint32_t i;
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uint16_t mlid_start_ho;
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CL_ASSERT(p_tbl);
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CL_ASSERT(p_block);
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if (block_num > p_tbl->max_block_in_use)
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return FALSE;
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if (position > p_tbl->max_position) {
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/*
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Caller shouldn't do this for efficiency's sake...
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*/
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memset(p_block, 0, IB_SMP_DATA_SIZE);
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return TRUE;
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}
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CL_ASSERT(block_num * IB_MCAST_BLOCK_SIZE <= p_tbl->mft_depth);
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mlid_start_ho = (uint16_t) (block_num * IB_MCAST_BLOCK_SIZE);
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for (i = 0; i < IB_MCAST_BLOCK_SIZE; i++)
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p_block[i] = (*p_tbl->p_mask_tbl)[mlid_start_ho + i][position];
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return TRUE;
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}
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