chassis.c

/*
 * Copyright (c) 2004-2009 Voltaire Inc.  All rights reserved.
 * Copyright (c) 2007 Xsigo Systems Inc.  All rights reserved.
 * Copyright (c) 2008 Lawrence Livermore National Lab.  All rights reserved.
 * Copyright (c) 2010 HNR Consulting.  All rights reserved.
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the
 * OpenIB.org BSD license below:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer in the documentation and/or other materials
 *        provided with the distribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 */

/*========================================================*/
/*               FABRIC SCANNER SPECIFIC DATA             */
/*========================================================*/

#include <stdlib.h>
#include <inttypes.h>

#include <infiniband/mad.h>

#include "internal.h"
#include "chassis.h"

static const char * const ChassisTypeStr[] =
{ "", "ISR9288", "ISR9096", "ISR2012", "ISR2004", "ISR4700", "ISR4200" };
static const char * const ChassisSlotTypeStr[] = { "", "Line", "Spine", "SRBD" };

typedef struct chassis_scan {
	ibnd_chassis_t *first_chassis;
	ibnd_chassis_t *current_chassis;
	ibnd_chassis_t *last_chassis;
} chassis_scan_t;

const char *ibnd_get_chassis_type(ibnd_node_t * node)
{
	int chassis_type;

	if (!node) {
		IBND_DEBUG("node parameter NULL\n");
		return NULL;
	}

	if (!node->chassis)
		return NULL;

	chassis_type = mad_get_field(node->info, 0, IB_NODE_VENDORID_F);

	switch (chassis_type)
	{
		case VTR_VENDOR_ID: /* Voltaire chassis */
		{
			if (node->ch_type == UNRESOLVED_CT || node->ch_type > ISR4200_CT)
				return NULL;
			return ChassisTypeStr[node->ch_type];
		}
		case MLX_VENDOR_ID:
		{
			if (node->ch_type_str[0] == '\0')
				return NULL;
			return node->ch_type_str;
		}
		default:
		{
			break;
		}
	}
	return NULL;
}

char *ibnd_get_chassis_slot_str(ibnd_node_t * node, char *str, size_t size)
{
	int vendor_id;

	if (!node) {
		IBND_DEBUG("node parameter NULL\n");
		return NULL;
	}

	/* Currently, only if Voltaire or Mellanox chassis */
	vendor_id = mad_get_field(node->info, 0,IB_NODE_VENDORID_F);

	if ((vendor_id != VTR_VENDOR_ID) && (vendor_id != MLX_VENDOR_ID))
		return NULL;
	if (!node->chassis)
		return NULL;
	if (node->ch_slot == UNRESOLVED_CS || node->ch_slot > SRBD_CS)
		return NULL;
	if (!str)
		return NULL;
	snprintf(str, size, "%s %d Chip %d", ChassisSlotTypeStr[node->ch_slot],
		 node->ch_slotnum, node->ch_anafanum);
	return str;
}

static ibnd_chassis_t *find_chassisnum(ibnd_fabric_t * fabric,
				       unsigned char chassisnum)
{
	ibnd_chassis_t *current;

	for (current = fabric->chassis; current; current = current->next)
		if (current->chassisnum == chassisnum)
			return current;

	return NULL;
}

static uint64_t topspin_chassisguid(uint64_t guid)
{
	/* Byte 3 in system image GUID is chassis type, and */
	/* Byte 4 is location ID (slot) so just mask off byte 4 */
	return guid & 0xffffffff00ffffffULL;
}

int ibnd_is_xsigo_guid(uint64_t guid)
{
	if ((guid & 0xffffff0000000000ULL) == 0x0013970000000000ULL)
		return 1;
	else
		return 0;
}

static int is_xsigo_leafone(uint64_t guid)
{
	if ((guid & 0xffffffffff000000ULL) == 0x0013970102000000ULL)
		return 1;
	else
		return 0;
}

int ibnd_is_xsigo_hca(uint64_t guid)
{
	/* NodeType 2 is HCA */
	if ((guid & 0xffffffff00000000ULL) == 0x0013970200000000ULL)
		return 1;
	else
		return 0;
}

int ibnd_is_xsigo_tca(uint64_t guid)
{
	/* NodeType 3 is TCA */
	if ((guid & 0xffffffff00000000ULL) == 0x0013970300000000ULL)
		return 1;
	else
		return 0;
}

static int is_xsigo_ca(uint64_t guid)
{
	if (ibnd_is_xsigo_hca(guid) || ibnd_is_xsigo_tca(guid))
		return 1;
	else
		return 0;
}

static int is_xsigo_switch(uint64_t guid)
{
	if ((guid & 0xffffffff00000000ULL) == 0x0013970100000000ULL)
		return 1;
	else
		return 0;
}

static uint64_t xsigo_chassisguid(ibnd_node_t * node)
{
	uint64_t sysimgguid =
	    mad_get_field64(node->info, 0, IB_NODE_SYSTEM_GUID_F);
	uint64_t remote_sysimgguid;

	if (!is_xsigo_ca(sysimgguid)) {
		/* Byte 3 is NodeType and byte 4 is PortType */
		/* If NodeType is 1 (switch), PortType is masked */
		if (is_xsigo_switch(sysimgguid))
			return sysimgguid & 0xffffffff00ffffffULL;
		else
			return sysimgguid;
	} else {
		if (!node->ports || !node->ports[1])
			return 0;

		/* Is there a peer port ? */
		if (!node->ports[1]->remoteport)
			return sysimgguid;

		/* If peer port is Leaf 1, use its chassis GUID */
		remote_sysimgguid =
		    mad_get_field64(node->ports[1]->remoteport->node->info, 0,
				    IB_NODE_SYSTEM_GUID_F);
		if (is_xsigo_leafone(remote_sysimgguid))
			return remote_sysimgguid & 0xffffffff00ffffffULL;
		else
			return sysimgguid;
	}
}

static uint64_t get_chassisguid(ibnd_node_t * node)
{
	uint32_t vendid = mad_get_field(node->info, 0, IB_NODE_VENDORID_F);
	uint64_t sysimgguid =
	    mad_get_field64(node->info, 0, IB_NODE_SYSTEM_GUID_F);

	if (vendid == TS_VENDOR_ID || vendid == SS_VENDOR_ID)
		return topspin_chassisguid(sysimgguid);
	else if (vendid == XS_VENDOR_ID || ibnd_is_xsigo_guid(sysimgguid))
		return xsigo_chassisguid(node);
	else
		return sysimgguid;
}

static ibnd_chassis_t *find_chassisguid(ibnd_fabric_t * fabric,
					ibnd_node_t * node)
{
	ibnd_chassis_t *current;
	uint64_t chguid;

	chguid = get_chassisguid(node);
	for (current = fabric->chassis; current; current = current->next)
		if (current->chassisguid == chguid)
			return current;

	return NULL;
}

uint64_t ibnd_get_chassis_guid(ibnd_fabric_t * fabric, unsigned char chassisnum)
{
	ibnd_chassis_t *chassis;

	if (!fabric) {
		IBND_DEBUG("fabric parameter NULL\n");
		return 0;
	}

	chassis = find_chassisnum(fabric, chassisnum);
	if (chassis)
		return chassis->chassisguid;
	else
		return 0;
}

static int is_router(ibnd_node_t * n)
{
	uint32_t devid = mad_get_field(n->info, 0, IB_NODE_DEVID_F);
	return (devid == VTR_DEVID_IB_FC_ROUTER ||
		devid == VTR_DEVID_IB_IP_ROUTER);
}

static int is_spine_9096(ibnd_node_t * n)
{
	uint32_t devid = mad_get_field(n->info, 0, IB_NODE_DEVID_F);
	return (devid == VTR_DEVID_SFB4 || devid == VTR_DEVID_SFB4_DDR);
}

static int is_spine_9288(ibnd_node_t * n)
{
	uint32_t devid = mad_get_field(n->info, 0, IB_NODE_DEVID_F);
	return (devid == VTR_DEVID_SFB12 || devid == VTR_DEVID_SFB12_DDR);
}

static int is_spine_2004(ibnd_node_t * n)
{
	uint32_t devid = mad_get_field(n->info, 0, IB_NODE_DEVID_F);
	return (devid == VTR_DEVID_SFB2004);
}

static int is_spine_2012(ibnd_node_t * n)
{
	uint32_t devid = mad_get_field(n->info, 0, IB_NODE_DEVID_F);
	return (devid == VTR_DEVID_SFB2012);
}

static int is_spine_4700(ibnd_node_t * n)
{
	uint32_t devid = mad_get_field(n->info, 0, IB_NODE_DEVID_F);
	return (devid == VTR_DEVID_SFB4700);
}

static int is_spine_4700x2(ibnd_node_t * n)
{
	uint32_t devid = mad_get_field(n->info, 0, IB_NODE_DEVID_F);
	return (devid == VTR_DEVID_SFB4700X2);
}

static int is_spine_4200(ibnd_node_t * n)
{
	uint32_t devid = mad_get_field(n->info, 0, IB_NODE_DEVID_F);
	return (devid == VTR_DEVID_SFB4200);
}

static int is_spine(ibnd_node_t * n)
{
	return (is_spine_9096(n) || is_spine_9288(n) ||
		is_spine_2004(n) || is_spine_2012(n) ||
		is_spine_4700(n) || is_spine_4700x2(n) ||
		is_spine_4200(n));
}

static int is_line_24(ibnd_node_t * n)
{
	uint32_t devid = mad_get_field(n->info, 0, IB_NODE_DEVID_F);
	return (devid == VTR_DEVID_SLB24 ||
		devid == VTR_DEVID_SLB24_DDR || devid == VTR_DEVID_SRB2004);
}

static int is_line_8(ibnd_node_t * n)
{
	uint32_t devid = mad_get_field(n->info, 0, IB_NODE_DEVID_F);
	return (devid == VTR_DEVID_SLB8);
}

static int is_line_2024(ibnd_node_t * n)
{
	uint32_t devid = mad_get_field(n->info, 0, IB_NODE_DEVID_F);
	return (devid == VTR_DEVID_SLB2024);
}

static int is_line_4700(ibnd_node_t * n)
{
	uint32_t devid = mad_get_field(n->info, 0, IB_NODE_DEVID_F);
	return (devid == VTR_DEVID_SLB4018);
}

static int is_line(ibnd_node_t * n)
{
	return (is_line_24(n) || is_line_8(n) ||
		is_line_2024(n) || is_line_4700(n));
}

/* these structs help find Line (Anafa) slot number while using spine portnum */
static const char line_slot_2_sfb4[37] = {
	0,
	1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3,
	4, 4, 4, 4, 4, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};
static const char anafa_line_slot_2_sfb4[37] = {
	0,
	1, 1, 1, 2, 2, 2, 1, 1, 1, 2, 2, 2, 1, 1, 1, 2, 2, 2,
	1, 1, 1, 2, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};

static const char line_slot_2_sfb12[37] = {
	0,
	1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9,
	10, 10, 11, 11, 12, 12, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};
static const char anafa_line_slot_2_sfb12[37] = {
	0,
	1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2,
	1, 2, 1, 2, 1, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};

/* LB slot = table[spine port] */
static const char line_slot_2_sfb18[37] = {
	0,
	1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9,
	10, 10, 11, 11, 12, 12, 13, 13, 14, 14, 15, 15, 16, 16, 17, 17, 18, 18};
/* LB asic num = table[spine port] */
static const char anafa_line_slot_2_sfb18[37] = {
	0,
	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1
};

/* LB slot = table[spine port] */
static const char line_slot_2_sfb18x2[37] = {
	0,
	1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18,
	0, 0, 0, 0, 0, 0, 0, 0, 0,  0,  0,  0,  0,  0,  0,  0,  0,  0};
/* LB asic num = table[spine port] */
static const char anafa_line_slot_2_sfb18x2[37] = {
	0,
	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};

/* LB slot = table[spine port] */
static const char line_slot_2_sfb4200[37] = {
	0,
	1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5,
	5, 5, 6, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 8, 9, 9, 9, 9};
/* LB asic num = table[spine port] */
static const char anafa_line_slot_2_sfb4200[37] = {
	0,
	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1
};

/* IPR FCR modules connectivity while using sFB4 port as reference */
static const char ipr_slot_2_sfb4_port[37] = {
	0,
	3, 2, 1, 3, 2, 1, 3, 2, 1, 3, 2, 1, 3, 2, 1, 3, 2, 1,
	3, 2, 1, 3, 2, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};

/* these structs help find Spine (Anafa) slot number while using spine portnum */
static const char spine12_slot_2_slb[37] = {
	0,
	1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 4, 0, 0, 0, 0, 0, 0,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};
static const char anafa_spine12_slot_2_slb[37] = {
	0,
	1, 2, 3, 1, 2, 3, 1, 2, 3, 1, 2, 3, 0, 0, 0, 0, 0, 0,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};

static const char spine4_slot_2_slb[37] = {
	0,
	1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 4, 0, 0, 0, 0, 0, 0,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};
static const char anafa_spine4_slot_2_slb[37] = {
	0,
	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};

/* FB slot = table[line port] */
static const char spine18_slot_2_slb[37] = {
	0,
	1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};
/* FB asic = table[line port] */
static const char anafa_spine18_slot_2_slb[37] = {
	0,
	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};
static const char anafa_spine18x2_slot_2_slb[37] = {
	0,
	2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};

/* FB slot = table[line port] */
static const char sfb4200_slot_2_slb[37] = {
	0,
	1, 1, 1, 1, 0, 0, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};
/* FB asic = table[line port] */
static const char anafa_sfb4200_slot_2_slb[37] = {
	0,
	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};

/*	reference                     { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24 }; */

static int get_sfb_slot(ibnd_node_t * n, ibnd_port_t * lineport)
{
	n->ch_slot = SPINE_CS;
	if (is_spine_9096(n)) {
		n->ch_type = ISR9096_CT;
		n->ch_slotnum = spine4_slot_2_slb[lineport->portnum];
		n->ch_anafanum = anafa_spine4_slot_2_slb[lineport->portnum];
	} else if (is_spine_9288(n)) {
		n->ch_type = ISR9288_CT;
		n->ch_slotnum = spine12_slot_2_slb[lineport->portnum];
		n->ch_anafanum = anafa_spine12_slot_2_slb[lineport->portnum];
	} else if (is_spine_2012(n)) {
		n->ch_type = ISR2012_CT;
		n->ch_slotnum = spine12_slot_2_slb[lineport->portnum];
		n->ch_anafanum = anafa_spine12_slot_2_slb[lineport->portnum];
	} else if (is_spine_2004(n)) {
		n->ch_type = ISR2004_CT;
		n->ch_slotnum = spine4_slot_2_slb[lineport->portnum];
		n->ch_anafanum = anafa_spine4_slot_2_slb[lineport->portnum];
	} else if (is_spine_4700(n)) {
		n->ch_type = ISR4700_CT;
		n->ch_slotnum = spine18_slot_2_slb[lineport->portnum];
		n->ch_anafanum = anafa_spine18_slot_2_slb[lineport->portnum];
	} else if (is_spine_4700x2(n)) {
		n->ch_type = ISR4700_CT;
		n->ch_slotnum = spine18_slot_2_slb[lineport->portnum];
		n->ch_anafanum = anafa_spine18x2_slot_2_slb[lineport->portnum];
	} else if (is_spine_4200(n)) {
		n->ch_type = ISR4200_CT;
		n->ch_slotnum = sfb4200_slot_2_slb[lineport->portnum];
		n->ch_anafanum = anafa_sfb4200_slot_2_slb[lineport->portnum];
	} else {
		IBND_ERROR("Unexpected node found: guid 0x%016" PRIx64 "\n",
			   n->guid);
	}
	return 0;
}

static int get_router_slot(ibnd_node_t * n, ibnd_port_t * spineport)
{
	uint64_t guessnum = 0;

	n->ch_found = 1;

	n->ch_slot = SRBD_CS;
	if (is_spine_9096(spineport->node)) {
		n->ch_type = ISR9096_CT;
		n->ch_slotnum = line_slot_2_sfb4[spineport->portnum];
		n->ch_anafanum = ipr_slot_2_sfb4_port[spineport->portnum];
	} else if (is_spine_9288(spineport->node)) {
		n->ch_type = ISR9288_CT;
		n->ch_slotnum = line_slot_2_sfb12[spineport->portnum];
		/* this is a smart guess based on nodeguids order on sFB-12 module */
		guessnum = spineport->node->guid % 4;
		/* module 1 <--> remote anafa 3 */
		/* module 2 <--> remote anafa 2 */
		/* module 3 <--> remote anafa 1 */
		n->ch_anafanum = (guessnum == 3 ? 1 : (guessnum == 1 ? 3 : 2));
	} else if (is_spine_2012(spineport->node)) {
		n->ch_type = ISR2012_CT;
		n->ch_slotnum = line_slot_2_sfb12[spineport->portnum];
		/* this is a smart guess based on nodeguids order on sFB-12 module */
		guessnum = spineport->node->guid % 4;
		// module 1 <--> remote anafa 3
		// module 2 <--> remote anafa 2
		// module 3 <--> remote anafa 1
		n->ch_anafanum = (guessnum == 3 ? 1 : (guessnum == 1 ? 3 : 2));
	} else if (is_spine_2004(spineport->node)) {
		n->ch_type = ISR2004_CT;
		n->ch_slotnum = line_slot_2_sfb4[spineport->portnum];
		n->ch_anafanum = ipr_slot_2_sfb4_port[spineport->portnum];
	} else {
		IBND_ERROR("Unexpected node found: guid 0x%016" PRIx64 "\n",
			   spineport->node->guid);
	}
	return 0;
}

static int get_slb_slot(ibnd_node_t * n, ibnd_port_t * spineport)
{
	n->ch_slot = LINE_CS;
	if (is_spine_9096(spineport->node)) {
		n->ch_type = ISR9096_CT;
		n->ch_slotnum = line_slot_2_sfb4[spineport->portnum];
		n->ch_anafanum = anafa_line_slot_2_sfb4[spineport->portnum];
	} else if (is_spine_9288(spineport->node)) {
		n->ch_type = ISR9288_CT;
		n->ch_slotnum = line_slot_2_sfb12[spineport->portnum];
		n->ch_anafanum = anafa_line_slot_2_sfb12[spineport->portnum];
	} else if (is_spine_2012(spineport->node)) {
		n->ch_type = ISR2012_CT;
		n->ch_slotnum = line_slot_2_sfb12[spineport->portnum];
		n->ch_anafanum = anafa_line_slot_2_sfb12[spineport->portnum];
	} else if (is_spine_2004(spineport->node)) {
		n->ch_type = ISR2004_CT;
		n->ch_slotnum = line_slot_2_sfb4[spineport->portnum];
		n->ch_anafanum = anafa_line_slot_2_sfb4[spineport->portnum];
	} else if (is_spine_4700(spineport->node)) {
		n->ch_type = ISR4700_CT;
		n->ch_slotnum = line_slot_2_sfb18[spineport->portnum];
		n->ch_anafanum = anafa_line_slot_2_sfb18[spineport->portnum];
	} else if (is_spine_4700x2(spineport->node)) {
		n->ch_type = ISR4700_CT;
		n->ch_slotnum = line_slot_2_sfb18x2[spineport->portnum];
		n->ch_anafanum = anafa_line_slot_2_sfb18x2[spineport->portnum];
	} else if (is_spine_4200(spineport->node)) {
		n->ch_type = ISR4200_CT;
		n->ch_slotnum = line_slot_2_sfb4200[spineport->portnum];
		n->ch_anafanum = anafa_line_slot_2_sfb4200[spineport->portnum];
	} else {
		IBND_ERROR("Unexpected node found: guid 0x%016" PRIx64 "\n",
			   spineport->node->guid);
	}
	return 0;
}


/*
	This function called for every Mellanox node in fabric
*/
static int fill_mellanox_chassis_record(ibnd_node_t * node)
{
	int p = 0;
	ibnd_port_t *port;

	char node_desc[IB_SMP_DATA_SIZE + 1];
	char *system_name;
	char *system_type;
	char *system_slot_name;
	char *node_index;
	char *iter;
	int dev_id;

	/*
	The node description has the following format:

	'MF0;<system name>:<system type>/<system slot name>[:board type]/U<node index>'

     - System slot name in our systems can be L[01-36] , S[01-18]
     - Node index is always 1 (we don.t have boards with multiple IS4 chips).
     - System name is taken from the currently configured host name.
     -The board type is optional and we don.t set it currently  - A leaf or spine slot can currently hold a single type of board.
	 */

	memcpy(node_desc, node->nodedesc, IB_SMP_DATA_SIZE);
	node_desc[IB_SMP_DATA_SIZE] = '\0';

	IBND_DEBUG("fill_mellanox_chassis_record: node_desc:%s \n",node_desc);

	if (node->ch_found)	/* somehow this node has already been passed */
		return 0;

	/* All mellanox IS4 switches have the same vendor id*/
	dev_id = mad_get_field(node->info, 0,IB_NODE_DEVID_F);
	if (dev_id != MLX_DEVID_IS4)
		return 0;

	if((node_desc[0] != 'M') ||
	   (node_desc[1] != 'F') ||
	   (node_desc[2] != '0') ||
	   (node_desc[3] != ';')) {
		IBND_DEBUG("fill_mellanox_chassis_record: Unsupported node description format:%s \n",node_desc);
		return 0;
	}

	/* parse system name*/
	system_name = &node_desc[4];
	for (iter = system_name ; (*iter != ':') && (*iter != '\0') ; iter++);
	if(*iter == '\0'){
		IBND_DEBUG("fill_mellanox_chassis_record: Unsupported node description format:%s - (get system_name failed) \n",node_desc);
		return 0;
	}
	*iter = '\0';
	iter++;
	/* parse system type*/
	system_type = iter;
	for ( ; (*iter != '/') && (*iter != '\0') ; iter++);
	if(*iter == '\0'){
		IBND_DEBUG("fill_mellanox_chassis_record: Unsupported node description format:%s - (get system_type failed) \n",node_desc);
		return 0;
	}
	*iter = '\0';
	iter++;
	/* parse system slot name*/
	system_slot_name = iter;
	for ( ; (*iter != '/') && (*iter != ':') && (*iter != '\0') ; iter++);
	if(*iter == '\0'){
		IBND_DEBUG("fill_mellanox_chassis_record: Unsupported node description format:%s - (get system_slot_name failed) \n",node_desc);
		return 0;
	}
	if(*iter == ':'){
		*iter = '\0';
		iter++;
		for ( ; (*iter != '/') && (*iter != '\0') ; iter++);
		if(*iter == '\0'){
			IBND_DEBUG("fill_mellanox_chassis_record: Unsupported node description format:%s - (get board type failed) \n",node_desc);
			return 0;
		}
	}
	*iter = '\0';
	iter++;
	node_index = iter;
	if(node_index[0] != 'U'){
		IBND_DEBUG("fill_mellanox_chassis_record: Unsupported node description format:%s - (get node index) \n",node_desc);
		return 0;
	}

	/* set Chip number (node index) */
	node->ch_anafanum = (unsigned char) atoi(&node_index[1]);
	if(node->ch_anafanum != 1){
		IBND_DEBUG("Unexpected Chip number:%d \n",node->ch_anafanum);
	}


	/* set Line Spine numbers */
	if(system_slot_name[0] == 'L')
		node->ch_slot = LINE_CS;
	else if(system_slot_name[0] == 'S')
		node->ch_slot = SPINE_CS;
	else{
		IBND_DEBUG("fill_mellanox_chassis_record: Unsupported system_slot_name:%s \n",system_slot_name);
		return 0;
	}

	/* The switch will be displayed under Line or Spine and not under Chassis switches */
	node->ch_found = 1;

	node->ch_slotnum = (unsigned char) atoi(&system_slot_name[1]);
	if((node->ch_slot == LINE_CS && (node->ch_slotnum >  (LINES_MAX_NUM + 1))) ||
	   (node->ch_slot == SPINE_CS && (node->ch_slotnum > (SPINES_MAX_NUM + 1)))){
		IBND_ERROR("fill_mellanox_chassis_record: invalid slot number:%d \n",node->ch_slotnum);
		node->ch_slotnum = 0;
		return 0;
	}

	/*set ch_type_str*/
	strncpy(node->ch_type_str , system_type, sizeof(node->ch_type_str)-1);

	/* Line ports 1-18 are mapped to external ports 1-18*/
	if(node->ch_slot == LINE_CS)
	{
		for (p = 1; p <= node->numports && p <= 18 ; p++) {
			port = node->ports[p];
			if (!port)
				continue;
			port->ext_portnum = p;
		}
	}

	return 0;
}

static int insert_mellanox_line_and_spine(ibnd_node_t * node, ibnd_chassis_t * chassis)
{
	if (node->ch_slot == LINE_CS){

		if (chassis->linenode[node->ch_slotnum])
			return 0;	/* already filled slot */

		chassis->linenode[node->ch_slotnum] = node;
	}
	else if (node->ch_slot == SPINE_CS){

		if (chassis->spinenode[node->ch_slotnum])
			return 0;	/* already filled slot */

		chassis->spinenode[node->ch_slotnum] = node;
	}
	else
		return 0;

	node->chassis = chassis;

	return 0;
}


/* forward declare this */
static void voltaire_portmap(ibnd_port_t * port);
/*
	This function called for every Voltaire node in fabric
	It could be optimized so, but time overhead is very small
	and its only diag.util
*/
static int fill_voltaire_chassis_record(ibnd_node_t * node)
{
	int p = 0;
	ibnd_port_t *port;
	ibnd_node_t *remnode = NULL;

	if (node->ch_found)	/* somehow this node has already been passed */
		return 0;
	node->ch_found = 1;

	/* node is router only in case of using unique lid */
	/* (which is lid of chassis router port) */
	/* in such case node->ports is actually a requested port... */
	if (is_router(node))
		/* find the remote node */
		for (p = 1; p <= node->numports; p++) {
			port = node->ports[p];
			if (port && is_spine(port->remoteport->node))
				get_router_slot(node, port->remoteport);
		}
	else if (is_spine(node)) {
		int is_4700x2 = is_spine_4700x2(node);

		for (p = 1; p <= node->numports; p++) {
			port = node->ports[p];
			if (!port || !port->remoteport)
				continue;

			/*
			 * Skip ISR4700 double density fabric boards ports 19-36
			 * as they are chassis external ports
			 */
			if (is_4700x2 && (port->portnum > 18))
				continue;

			remnode = port->remoteport->node;
			if (remnode->type != IB_NODE_SWITCH) {
				if (!remnode->ch_found)
					get_router_slot(remnode, port);
				continue;
			}
			if (!node->ch_type)
				/* we assume here that remoteport belongs to line */
				get_sfb_slot(node, port->remoteport);

			/* we could break here, but need to find if more routers connected */
		}

	} else if (is_line(node)) {
		int is_4700_line = is_line_4700(node);

		for (p = 1; p <= node->numports; p++) {
			port = node->ports[p];
			if (!port || !port->remoteport)
				continue;

			if ((is_4700_line && (port->portnum > 18)) ||
			    (!is_4700_line && (port->portnum > 12)))
				continue;

			/* we assume here that remoteport belongs to spine */
			get_slb_slot(node, port->remoteport);
			break;
		}
	}

	/* for each port of this node, map external ports */
	for (p = 1; p <= node->numports; p++) {
		port = node->ports[p];
		if (!port)
			continue;
		voltaire_portmap(port);
	}

	return 0;
}

static int get_line_index(ibnd_node_t * node)
{
	int retval;

	if (is_line_4700(node))
		retval = node->ch_slotnum;
	else
		retval = 3 * (node->ch_slotnum - 1) + node->ch_anafanum;

	if (retval > LINES_MAX_NUM || retval < 1) {
		printf("%s: retval = %d\n", __FUNCTION__, retval);
		IBND_ERROR("Internal error\n");
		return -1;
	}
	return retval;
}

static int get_spine_index(ibnd_node_t * node)
{
	int retval;

	if (is_spine_9288(node) || is_spine_2012(node))
		retval = 3 * (node->ch_slotnum - 1) + node->ch_anafanum;
	else if (is_spine_4700(node) || is_spine_4700x2(node))
		retval = 2 * (node->ch_slotnum - 1) + node->ch_anafanum;
	else
		retval = node->ch_slotnum;

	if (retval > SPINES_MAX_NUM || retval < 1) {
		IBND_ERROR("Internal error\n");
		return -1;
	}
	return retval;
}

static int insert_line_router(ibnd_node_t * node, ibnd_chassis_t * chassis)
{
	int i = get_line_index(node);

	if (i < 0)
		return i;

	if (chassis->linenode[i])
		return 0;	/* already filled slot */

	chassis->linenode[i] = node;
	node->chassis = chassis;
	return 0;
}

static int insert_spine(ibnd_node_t * node, ibnd_chassis_t * chassis)
{
	int i = get_spine_index(node);

	if (i < 0)
		return i;

	if (chassis->spinenode[i])
		return 0;	/* already filled slot */

	chassis->spinenode[i] = node;
	node->chassis = chassis;
	return 0;
}

static int pass_on_lines_catch_spines(ibnd_chassis_t * chassis)
{
	ibnd_node_t *node, *remnode;
	ibnd_port_t *port;
	int i, p;

	for (i = 1; i <= LINES_MAX_NUM; i++) {
		int is_4700_line;

		node = chassis->linenode[i];

		if (!(node && is_line(node)))
			continue;	/* empty slot or router */

		is_4700_line = is_line_4700(node);

		for (p = 1; p <= node->numports; p++) {

			port = node->ports[p];
			if (!port || !port->remoteport)
				continue;

			if ((is_4700_line && (port->portnum > 18)) ||
			    (!is_4700_line && (port->portnum > 12)))
				continue;

			remnode = port->remoteport->node;

			if (!remnode->ch_found)
				continue;	/* some error - spine not initialized ? FIXME */
			if (insert_spine(remnode, chassis))
				return -1;
		}
	}
	return 0;
}

static int pass_on_spines_catch_lines(ibnd_chassis_t * chassis)
{
	ibnd_node_t *node, *remnode;
	ibnd_port_t *port;
	int i, p;

	for (i = 1; i <= SPINES_MAX_NUM; i++) {
		int is_4700x2;

		node = chassis->spinenode[i];
		if (!node)
			continue;	/* empty slot */

		is_4700x2 = is_spine_4700x2(node);

		for (p = 1; p <= node->numports; p++) {
			port = node->ports[p];
			if (!port || !port->remoteport)
				continue;

			/*
			 * ISR4700 double density fabric board ports 19-36 are
			 * chassis external ports, so skip them
			 */
			if (is_4700x2 && (port->portnum > 18))
				continue;

			remnode = port->remoteport->node;

			if (!remnode->ch_found)
				continue;	/* some error - line/router not initialized ? FIXME */

			if (insert_line_router(remnode, chassis))
				return -1;
		}
	}
	return 0;
}

/*
	Stupid interpolation algorithm...
	But nothing to do - have to be compliant with VoltaireSM/NMS
*/
static void pass_on_spines_interpolate_chguid(ibnd_chassis_t * chassis)
{
	ibnd_node_t *node;
	int i;

	for (i = 1; i <= SPINES_MAX_NUM; i++) {
		node = chassis->spinenode[i];
		if (!node)
			continue;	/* skip the empty slots */

		/* take first guid minus one to be consistent with SM */
		chassis->chassisguid = node->guid - 1;
		break;
	}
}

/*
	This function fills chassis structure with all nodes
	in that chassis
	chassis structure = structure of one standalone chassis
*/
static int build_chassis(ibnd_node_t * node, ibnd_chassis_t * chassis)
{
	int p = 0;
	ibnd_node_t *remnode = NULL;
	ibnd_port_t *port = NULL;

	/* we get here with node = chassis_spine */
	if (insert_spine(node, chassis))
		return -1;

	/* loop: pass on all ports of node */
	for (p = 1; p <= node->numports; p++) {

		port = node->ports[p];
		if (!port || !port->remoteport)
			continue;

		/*
		 * ISR4700 double density fabric board ports 19-36 are
		 * chassis external ports, so skip them
		 */
		if (is_spine_4700x2(node) && (port->portnum > 18))
			continue;

		remnode = port->remoteport->node;

		if (!remnode->ch_found)
			continue;	/* some error - line or router not initialized ? FIXME */

		insert_line_router(remnode, chassis);
	}

	if (pass_on_lines_catch_spines(chassis))
		return -1;
	/* this pass needed for to catch routers, since routers connected only */
	/* to spines in slot 1 or 4 and we could miss them first time */
	if (pass_on_spines_catch_lines(chassis))
		return -1;

	/* additional 2 passes needed for to overcome a problem of pure "in-chassis" */
	/* connectivity - extra pass to ensure that all related chips/modules */
	/* inserted into the chassis */
	if (pass_on_lines_catch_spines(chassis))
		return -1;
	if (pass_on_spines_catch_lines(chassis))
		return -1;
	pass_on_spines_interpolate_chguid(chassis);

	return 0;
}

/*========================================================*/
/*                INTERNAL TO EXTERNAL PORT MAPPING       */
/*========================================================*/

/*
Description : On ISR9288/9096 external ports indexing
              is not matching the internal ( anafa ) port
              indexes. Use this MAP to translate the data you get from
              the OpenIB diagnostics (smpquery, ibroute, ibtracert, etc.)

Module : sLB-24
                anafa 1             anafa 2
ext port | 13 14 15 16 17 18 | 19 20 21 22 23 24
int port | 22 23 24 18 17 16 | 22 23 24 18 17 16
ext port | 1  2  3  4  5  6  | 7  8  9  10 11 12
int port | 19 20 21 15 14 13 | 19 20 21 15 14 13
------------------------------------------------

Module : sLB-8
                anafa 1             anafa 2
ext port | 13 14 15 16 17 18 | 19 20 21 22 23 24
int port | 24 23 22 18 17 16 | 24 23 22 18 17 16
ext port | 1  2  3  4  5  6  | 7  8  9  10 11 12
int port | 21 20 19 15 14 13 | 21 20 19 15 14 13

----------->
                anafa 1             anafa 2
ext port | -  -  5  -  -  6  | -  -  7  -  -  8
int port | 24 23 22 18 17 16 | 24 23 22 18 17 16
ext port | -  -  1  -  -  2  | -  -  3  -  -  4
int port | 21 20 19 15 14 13 | 21 20 19 15 14 13
------------------------------------------------

Module : sLB-2024

ext port | 13 14 15 16 17 18 19 20 21 22 23 24
A1 int port| 13 14 15 16 17 18 19 20 21 22 23 24
ext port | 1 2 3 4 5 6 7 8 9 10 11 12
A2 int port| 13 14 15 16 17 18 19 20 21 22 23 24
---------------------------------------------------

Module : sLB-4018

int port | 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36
ext port |  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 16 17 18
---------------------------------------------------

Module : sFB-4700X2

  12X port -> 3 x 4X ports:

A1 int port | 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36
   ext port |  7  7  7  8  8  8  9  9  9 10 10 10 11 11 11 12 12 12
A2 int port | 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36
   ext port |  1  1  1  2  2  2  3  3  3  4  4  4  5  5  5  6  6  6

*/

static int int2ext_map_slb24[2][25] = {
	{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 6, 5, 4, 18, 17, 16, 1, 2, 3,
	 13, 14, 15},
	{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 12, 11, 10, 24, 23, 22, 7, 8, 9,
	 19, 20, 21}
};

static int int2ext_map_slb8[2][25] = {
	{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 2, 2, 6, 6, 6, 1, 1, 1, 5, 5,
	 5},
	{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 4, 4, 8, 8, 8, 3, 3, 3, 7, 7,
	 7}
};

static int int2ext_map_slb2024[2][25] = {
	{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 13, 14, 15, 16, 17, 18, 19, 20,
	 21, 22, 23, 24},
	{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
	 11, 12}
};

static int int2ext_map_slb4018[37] = {
	0,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18
};

static int int2ext_map_sfb4700x2[2][37] = {
	{0,
	 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	 7, 7, 7, 8, 8, 8, 9, 9, 9, 10, 10, 10, 11, 11, 11, 12, 12, 12},
	{0,
	 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	 1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 4, 5, 5, 5, 6, 6, 6}
};

/*	reference			{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24 }; */

/* map internal ports to external ports if appropriate */
static void voltaire_portmap(ibnd_port_t * port)
{
	int portnum = port->portnum;
	int chipnum = 0;
	ibnd_node_t *node = port->node;
	int is_4700_line = is_line_4700(node);
	int is_4700x2_spine = is_spine_4700x2(node);

	if (!node->ch_found || (!is_line(node) && !is_4700x2_spine)) {
		port->ext_portnum = 0;
		return;
	}

	if (((is_4700_line || is_4700x2_spine) &&
	     (portnum < 19 || portnum > 36)) ||
	    ((!is_4700_line && !is_4700x2_spine) &&
	     (portnum < 13 || portnum > 24))) {
			port->ext_portnum = 0;
		return;
	}

	if (port->node->ch_anafanum < 1 || port->node->ch_anafanum > 2) {
		port->ext_portnum = 0;
		return;
	}

	chipnum = port->node->ch_anafanum - 1;

	if (is_line_24(node))
		port->ext_portnum = int2ext_map_slb24[chipnum][portnum];
	else if (is_line_2024(node))
		port->ext_portnum = int2ext_map_slb2024[chipnum][portnum];
	/* sLB-4018: Only one asic per LB */
	else if (is_4700_line)
		port->ext_portnum = int2ext_map_slb4018[portnum];
	/* sFB-4700X2 4X port */
	else if (is_4700x2_spine)
		port->ext_portnum = int2ext_map_sfb4700x2[chipnum][portnum];
	else
		port->ext_portnum = int2ext_map_slb8[chipnum][portnum];
}

static int add_chassis(chassis_scan_t * chassis_scan)
{
	if (!(chassis_scan->current_chassis =
	      calloc(1, sizeof(ibnd_chassis_t)))) {
		IBND_ERROR("OOM: failed to allocate chassis object\n");
		return -1;
	}

	if (chassis_scan->first_chassis == NULL) {
		chassis_scan->first_chassis = chassis_scan->current_chassis;
		chassis_scan->last_chassis = chassis_scan->current_chassis;
	} else {
		chassis_scan->last_chassis->next =
		    chassis_scan->current_chassis;
		chassis_scan->last_chassis = chassis_scan->current_chassis;
	}
	return 0;
}

static void add_node_to_chassis(ibnd_chassis_t * chassis, ibnd_node_t * node)
{
	node->chassis = chassis;
	node->next_chassis_node = chassis->nodes;
	chassis->nodes = node;
}

/*
	Main grouping function
	Algorithm:
	1. pass on every Voltaire node
	2. catch spine chip for every Voltaire node
		2.1 build/interpolate chassis around this chip
		2.2 go to 1.
	3. pass on non Voltaire nodes (SystemImageGUID based grouping)
	4. now group non Voltaire nodes by SystemImageGUID
	Returns:
	0 on success, -1 on failure
*/
int group_nodes(ibnd_fabric_t * fabric)
{
	ibnd_node_t *node;
	int chassisnum = 0;
	ibnd_chassis_t *chassis;
	ibnd_chassis_t *ch, *ch_next;
	chassis_scan_t chassis_scan;
	int vendor_id;

	chassis_scan.first_chassis = NULL;
	chassis_scan.current_chassis = NULL;
	chassis_scan.last_chassis = NULL;

	/* first pass on switches and build for every Voltaire node */
	/* an appropriate chassis record (slotnum and position) */
	/* according to internal connectivity */
	/* not very efficient but clear code so... */
	for (node = fabric->switches; node; node = node->type_next) {

		vendor_id = mad_get_field(node->info, 0,IB_NODE_VENDORID_F);

		if (vendor_id == VTR_VENDOR_ID
		    && fill_voltaire_chassis_record(node))
			goto cleanup;
		else if (vendor_id == MLX_VENDOR_ID
			&& fill_mellanox_chassis_record(node))
			goto cleanup;

	}

	/* separate every Voltaire chassis from each other and build linked list of them */
	/* algorithm: catch spine and find all surrounding nodes */
	for (node = fabric->switches; node; node = node->type_next) {
		if (mad_get_field(node->info, 0,
				  IB_NODE_VENDORID_F) != VTR_VENDOR_ID)
			continue;
		if (!node->ch_found
		    || (node->chassis && node->chassis->chassisnum)
		    || !is_spine(node))
			continue;
		if (add_chassis(&chassis_scan))
			goto cleanup;
		chassis_scan.current_chassis->chassisnum = ++chassisnum;
		if (build_chassis(node, chassis_scan.current_chassis))
			goto cleanup;
	}

	/* now make pass on nodes for chassis which are not Voltaire */
	/* grouped by common SystemImageGUID */
	for (node = fabric->nodes; node; node = node->next) {
		if (mad_get_field(node->info, 0,
				  IB_NODE_VENDORID_F) == VTR_VENDOR_ID)
			continue;
		if (mad_get_field64(node->info, 0, IB_NODE_SYSTEM_GUID_F)) {
			chassis = find_chassisguid(fabric, node);
			if (chassis)
				chassis->nodecount++;
			else {
				/* Possible new chassis */
				if (add_chassis(&chassis_scan))
					goto cleanup;
				chassis_scan.current_chassis->chassisguid =
				    get_chassisguid(node);
				chassis_scan.current_chassis->nodecount = 1;
				if (!fabric->chassis)
					fabric->chassis = chassis_scan.first_chassis;
			}
		}
	}

	/* now, make another pass to see which nodes are part of chassis */
	/* (defined as chassis->nodecount > 1) */
	for (node = fabric->nodes; node; node = node->next) {

		vendor_id = mad_get_field(node->info, 0,IB_NODE_VENDORID_F);

		if (vendor_id == VTR_VENDOR_ID)
			continue;
		if (mad_get_field64(node->info, 0, IB_NODE_SYSTEM_GUID_F)) {
			chassis = find_chassisguid(fabric, node);
			if (chassis && chassis->nodecount > 1) {
				if (!chassis->chassisnum)
					chassis->chassisnum = ++chassisnum;
				if (!node->ch_found) {
					node->ch_found = 1;
					add_node_to_chassis(chassis, node);
				}
				else if (vendor_id == MLX_VENDOR_ID){
					insert_mellanox_line_and_spine(node, chassis);
				}
			}
		}
	}

	fabric->chassis = chassis_scan.first_chassis;
	return 0;

cleanup:
	ch = chassis_scan.first_chassis;
	while (ch) {
		ch_next = ch->next;
		free(ch);
		ch = ch_next;
	}
	fabric->chassis = NULL;
	return -1;
}