linux/drivers/infiniband/core/smi.c

/*
 * Copyright (c) 2004, 2005 Mellanox Technologies Ltd.  All rights reserved.
 * Copyright (c) 2004, 2005 Infinicon Corporation.  All rights reserved.
 * Copyright (c) 2004, 2005 Intel Corporation.  All rights reserved.
 * Copyright (c) 2004, 2005 Topspin Corporation.  All rights reserved.
 * Copyright (c) 2004-2007 Voltaire Corporation.  All rights reserved.
 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
 * Copyright (c) 2014 Intel Corporation.  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.
 *
 */

#include <rdma/ib_smi.h>
#include "smi.h"
#include "opa_smi.h"

static enum smi_action __smi_handle_dr_smp_send(bool is_switch, u32 port_num,
						u8 *hop_ptr, u8 hop_cnt,
						const u8 *initial_path,
						const u8 *return_path,
						u8 direction,
						bool dr_dlid_is_permissive,
						bool dr_slid_is_permissive)
{ … }

/*
 * Fixup a directed route SMP for sending
 * Return IB_SMI_DISCARD if the SMP should be discarded
 */
enum smi_action smi_handle_dr_smp_send(struct ib_smp *smp,
				       bool is_switch, u32 port_num)
{ … }

enum smi_action opa_smi_handle_dr_smp_send(struct opa_smp *smp,
				       bool is_switch, u32 port_num)
{ … }

static enum smi_action __smi_handle_dr_smp_recv(bool is_switch, u32 port_num,
						int phys_port_cnt,
						u8 *hop_ptr, u8 hop_cnt,
						const u8 *initial_path,
						u8 *return_path,
						u8 direction,
						bool dr_dlid_is_permissive,
						bool dr_slid_is_permissive)
{ … }

/*
 * Adjust information for a received SMP
 * Return IB_SMI_DISCARD if the SMP should be dropped
 */
enum smi_action smi_handle_dr_smp_recv(struct ib_smp *smp, bool is_switch,
				       u32 port_num, int phys_port_cnt)
{ … }

/*
 * Adjust information for a received SMP
 * Return IB_SMI_DISCARD if the SMP should be dropped
 */
enum smi_action opa_smi_handle_dr_smp_recv(struct opa_smp *smp, bool is_switch,
					   u32 port_num, int phys_port_cnt)
{ … }

static enum smi_forward_action __smi_check_forward_dr_smp(u8 hop_ptr, u8 hop_cnt,
							  u8 direction,
							  bool dr_dlid_is_permissive,
							  bool dr_slid_is_permissive)
{ … }

enum smi_forward_action smi_check_forward_dr_smp(struct ib_smp *smp)
{ … }

enum smi_forward_action opa_smi_check_forward_dr_smp(struct opa_smp *smp)
{ … }

/*
 * Return the forwarding port number from initial_path for outgoing SMP and
 * from return_path for returning SMP
 */
int smi_get_fwd_port(struct ib_smp *smp)
{ … }

/*
 * Return the forwarding port number from initial_path for outgoing SMP and
 * from return_path for returning SMP
 */
int opa_smi_get_fwd_port(struct opa_smp *smp)
{ … }