/*

 * Copyright (c) 2004-2009 Voltaire, Inc. All rights reserved.

 * Copyright (c) 2002-2005 Mellanox Technologies LTD. All rights reserved.

 * Copyright (c) 1996-2003 Intel Corporation. All rights reserved.

 * Copyright (c) 2013 Oracle and/or its affiliates. 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.

 *

 */

/*

 * Abstract:

 *    Implementation of osm_smir_rcv_t.

 * This object represents the SMInfo Receiver object.

 * This object is part of the opensm family of objects.

 */

#if HAVE_CONFIG_H

#  include <config.h>

#endif				/* HAVE_CONFIG_H */

#include <string.h>

#include <iba/ib_types.h>

#include <complib/cl_qmap.h>

#include <complib/cl_passivelock.h>

#include <complib/cl_debug.h>

#include <complib/cl_qlist.h>

#include <opensm/osm_file_ids.h>

#define FILE_ID OSM_FILE_SA_SMINFO_RECORD_C

#include <vendor/osm_vendor_api.h>

#include <opensm/osm_madw.h>

#include <opensm/osm_log.h>

#include <opensm/osm_subnet.h>

#include <opensm/osm_mad_pool.h>

#include <opensm/osm_helper.h>

#include <opensm/osm_msgdef.h>

#include <opensm/osm_port.h>

#include <opensm/osm_pkey.h>

#include <opensm/osm_remote_sm.h>

#include <opensm/osm_sa.h>

#include <opensm/osm_opensm.h>

#define SA_SMIR_RESP_SIZE SA_ITEM_RESP_SIZE(sminfo_rec)

typedef struct osm_smir_search_ctxt {

	const ib_sminfo_record_t *p_rcvd_rec;

	ib_net64_t comp_mask;

	cl_qlist_t *p_list;

	osm_sa_t *sa;

	const osm_physp_t *p_req_physp;

} osm_smir_search_ctxt_t;

static ib_api_status_t smir_rcv_new_smir(IN osm_sa_t * sa,

					 IN const osm_port_t * p_port,

					 IN cl_qlist_t * p_list,

					 IN ib_net64_t const guid,

					 IN ib_net32_t const act_count,

					 IN uint8_t const pri_state,

					 IN const osm_physp_t * p_req_physp)

{

	osm_sa_item_t *p_rec_item;

	ib_api_status_t status = IB_SUCCESS;

	OSM_LOG_ENTER(sa->p_log);

	p_rec_item = malloc(SA_SMIR_RESP_SIZE);

	if (p_rec_item == NULL) {

		OSM_LOG(sa->p_log, OSM_LOG_ERROR, "ERR 2801: "

			"rec_item alloc failed\n");

		status = IB_INSUFFICIENT_RESOURCES;

		goto Exit;

	}

	OSM_LOG(sa->p_log, OSM_LOG_DEBUG,

		"New SMInfo: GUID 0x%016" PRIx64 "\n", cl_ntoh64(guid));

	memset(p_rec_item, 0, SA_SMIR_RESP_SIZE);

	p_rec_item->resp.sminfo_rec.lid = osm_port_get_base_lid(p_port);

	p_rec_item->resp.sminfo_rec.sm_info.guid = guid;

	p_rec_item->resp.sminfo_rec.sm_info.act_count = act_count;

	p_rec_item->resp.sminfo_rec.sm_info.pri_state = pri_state;

	cl_qlist_insert_tail(p_list, &p_rec_item->list_item);

Exit:

	OSM_LOG_EXIT(sa->p_log);

	return status;

}

static void sa_smir_by_comp_mask(IN osm_sa_t * sa,

				 IN const osm_remote_sm_t * p_rem_sm,

				 osm_smir_search_ctxt_t * p_ctxt)

{

	const ib_sminfo_record_t *const p_rcvd_rec = p_ctxt->p_rcvd_rec;

	const osm_physp_t *const p_req_physp = p_ctxt->p_req_physp;

	ib_net64_t const comp_mask = p_ctxt->comp_mask;

	osm_port_t *p_port;

	OSM_LOG_ENTER(sa->p_log);

	if (comp_mask & IB_SMIR_COMPMASK_GUID) {

		if (p_rem_sm->smi.guid != p_rcvd_rec->sm_info.guid)

			goto Exit;

	}

	if (comp_mask & IB_SMIR_COMPMASK_PRIORITY) {

		if (ib_sminfo_get_priority(&p_rem_sm->smi) !=

		    ib_sminfo_get_priority(&p_rcvd_rec->sm_info))

			goto Exit;

	}

	if (comp_mask & IB_SMIR_COMPMASK_SMSTATE) {

		if (ib_sminfo_get_state(&p_rem_sm->smi) !=

		    ib_sminfo_get_state(&p_rcvd_rec->sm_info))

			goto Exit;

	}

	/* Implement any other needed search cases */

	p_port = osm_get_port_by_guid(sa->p_subn, p_rem_sm->smi.guid);

        if (p_port == NULL) {

                OSM_LOG(sa->p_log, OSM_LOG_ERROR, "ERR 2810: "

                        "No port for remote sm\n");

                goto Exit;

        }

	smir_rcv_new_smir(sa, p_port, p_ctxt->p_list,

			  p_rem_sm->smi.guid, p_rem_sm->smi.act_count,

			  p_rem_sm->smi.pri_state, p_req_physp);

Exit:

	OSM_LOG_EXIT(sa->p_log);

}

static void sa_smir_by_comp_mask_cb(IN cl_map_item_t * p_map_item, IN void *cxt)

{

	const osm_remote_sm_t *p_rem_sm = (osm_remote_sm_t *) p_map_item;

	osm_smir_search_ctxt_t *p_ctxt = cxt;

	sa_smir_by_comp_mask(p_ctxt->sa, p_rem_sm, p_ctxt);

}

void osm_smir_rcv_process(IN void *ctx, IN void *data)

{

	osm_sa_t *sa = ctx;

	osm_madw_t *p_madw = data;

	const ib_sa_mad_t *sad_mad;

	const ib_sminfo_record_t *p_rcvd_rec;

	const osm_port_t *p_port = NULL;

	const ib_sm_info_t *p_smi;

	cl_qlist_t rec_list;

	osm_smir_search_ctxt_t context;

	ib_api_status_t status = IB_SUCCESS;

	ib_net64_t comp_mask;

	ib_net64_t port_guid;

	osm_physp_t *p_req_physp;

	osm_port_t *local_port;

	osm_remote_sm_t *p_rem_sm;

	cl_qmap_t *p_sm_guid_tbl;

	uint8_t pri_state;

	CL_ASSERT(sa);

	OSM_LOG_ENTER(sa->p_log);

	CL_ASSERT(p_madw);

	sad_mad = osm_madw_get_sa_mad_ptr(p_madw);

	p_rcvd_rec = (ib_sminfo_record_t *) ib_sa_mad_get_payload_ptr(sad_mad);

	comp_mask = sad_mad->comp_mask;

	CL_ASSERT(sad_mad->attr_id == IB_MAD_ATTR_SMINFO_RECORD);

	/* we only support SubnAdmGet and SubnAdmGetTable methods */

	if (sad_mad->method != IB_MAD_METHOD_GET &&

	    sad_mad->method != IB_MAD_METHOD_GETTABLE) {

		OSM_LOG(sa->p_log, OSM_LOG_ERROR, "ERR 2804: "

			"Unsupported Method (%s) for SMInfoRecord request\n",

			ib_get_sa_method_str(sad_mad->method));

		osm_sa_send_error(sa, p_madw, IB_MAD_STATUS_UNSUP_METHOD_ATTR);

		goto Exit;

	}

	cl_plock_acquire(sa->p_lock);

	/* update the requester physical port */

	p_req_physp = osm_get_physp_by_mad_addr(sa->p_log, sa->p_subn,

						osm_madw_get_mad_addr_ptr

						(p_madw));

	if (p_req_physp == NULL) {

		cl_plock_release(sa->p_lock);

		OSM_LOG(sa->p_log, OSM_LOG_ERROR, "ERR 2803: "

			"Cannot find requester physical port\n");

		goto Exit;

	}

	if (OSM_LOG_IS_ACTIVE_V2(sa->p_log, OSM_LOG_DEBUG)) {

		OSM_LOG(sa->p_log, OSM_LOG_DEBUG,

			"Requester port GUID 0x%" PRIx64 "\n",

			cl_ntoh64(osm_physp_get_port_guid(p_req_physp)));

		osm_dump_sm_info_record_v2(sa->p_log, p_rcvd_rec, FILE_ID, OSM_LOG_DEBUG);

	}

	p_smi = &p_rcvd_rec->sm_info;

	cl_qlist_init(&rec_list);

	context.p_rcvd_rec = p_rcvd_rec;

	context.p_list = &rec_list;

	context.comp_mask = sad_mad->comp_mask;

	context.sa = sa;

	context.p_req_physp = p_req_physp;

	/*

	   If the user specified a LID, it obviously narrows our

	   work load, since we don't have to search every port

	 */

	if (comp_mask & IB_SMIR_COMPMASK_LID) {

		p_port = osm_get_port_by_lid(sa->p_subn, p_rcvd_rec->lid);

		if (!p_port) {

			status = IB_NOT_FOUND;

			OSM_LOG(sa->p_log, OSM_LOG_ERROR, "ERR 2806: "

				"No port found with LID %u\n",

				cl_ntoh16(p_rcvd_rec->lid));

		}

	}

	if (status == IB_SUCCESS) {

		/* Handle our own SM first */

		local_port = osm_get_port_by_guid(sa->p_subn,

						  sa->p_subn->sm_port_guid);

		if (!local_port) {

			cl_plock_release(sa->p_lock);

			OSM_LOG(sa->p_log, OSM_LOG_ERROR, "ERR 2809: "

				"No port found with GUID 0x%016" PRIx64 "\n",

				cl_ntoh64(sa->p_subn->sm_port_guid));

			goto Exit;

		}

		if (!p_port || local_port == p_port) {

			if (FALSE ==

			    osm_physp_share_pkey(sa->p_log, p_req_physp,

						 local_port->p_physp,

						 sa->p_subn->opt.allow_both_pkeys)) {

				cl_plock_release(sa->p_lock);

				OSM_LOG(sa->p_log, OSM_LOG_ERROR, "ERR 2805: "

					"Cannot get SMInfo record due to pkey violation\n");

				goto Exit;

			}

			/* Check that other search components specified match */

			if ((comp_mask & IB_SMIR_COMPMASK_GUID) &&

			    sa->p_subn->sm_port_guid != p_smi->guid)

				goto Remotes;

			if ((comp_mask & IB_SMIR_COMPMASK_PRIORITY) &&

			    sa->p_subn->opt.sm_priority !=

			    ib_sminfo_get_priority(p_smi))

				goto Remotes;

			if ((comp_mask & IB_SMIR_COMPMASK_SMSTATE) &&

			    sa->p_subn->sm_state != ib_sminfo_get_state(p_smi))

				goto Remotes;

			/* Now, add local SMInfo to list */

			pri_state = sa->p_subn->sm_state & 0x0F;

			pri_state |= (sa->p_subn->opt.sm_priority & 0x0F) << 4;

			smir_rcv_new_smir(sa, local_port, context.p_list,

					  sa->p_subn->sm_port_guid,

					  cl_ntoh32(sa->p_subn->p_osm->stats.

						    qp0_mads_sent), pri_state,

					  p_req_physp);

		}

	      Remotes:

		if (p_port && p_port != local_port) {

			/* Find remote SM corresponding to p_port */

			port_guid = osm_port_get_guid(p_port);

			p_sm_guid_tbl = &sa->p_subn->sm_guid_tbl;

			p_rem_sm =

			    (osm_remote_sm_t *) cl_qmap_get(p_sm_guid_tbl,

							    port_guid);

			if (p_rem_sm !=

			    (osm_remote_sm_t *) cl_qmap_end(p_sm_guid_tbl))

				sa_smir_by_comp_mask(sa, p_rem_sm, &context);

			else

				OSM_LOG(sa->p_log, OSM_LOG_ERROR, "ERR 280A: "

					"No remote SM for GUID 0x%016" PRIx64

					"\n", cl_ntoh64(port_guid));

		} else if (!p_port) {

			/* Go over all other known (remote) SMs */

			cl_qmap_apply_func(&sa->p_subn->sm_guid_tbl,

					   sa_smir_by_comp_mask_cb, &context);

		}

	}

	cl_plock_release(sa->p_lock);

	osm_sa_respond(sa, p_madw, sizeof(ib_sminfo_record_t), &rec_list);

Exit:

	OSM_LOG_EXIT(sa->p_log);

}