1219820Sjeff/* 2219820Sjeff * Copyright (c) 2004 Mellanox Technologies Ltd. All rights reserved. 3219820Sjeff * Copyright (c) 2004 Infinicon Corporation. All rights reserved. 4219820Sjeff * Copyright (c) 2004 Intel Corporation. All rights reserved. 5219820Sjeff * Copyright (c) 2004 Topspin Corporation. All rights reserved. 6219820Sjeff * Copyright (c) 2004-2007 Voltaire Corporation. All rights reserved. 7219820Sjeff * 8219820Sjeff * This software is available to you under a choice of one of two 9219820Sjeff * licenses. You may choose to be licensed under the terms of the GNU 10219820Sjeff * General Public License (GPL) Version 2, available from the file 11219820Sjeff * COPYING in the main directory of this source tree, or the 12219820Sjeff * OpenIB.org BSD license below: 13219820Sjeff * 14219820Sjeff * Redistribution and use in source and binary forms, with or 15219820Sjeff * without modification, are permitted provided that the following 16219820Sjeff * conditions are met: 17219820Sjeff * 18219820Sjeff * - Redistributions of source code must retain the above 19219820Sjeff * copyright notice, this list of conditions and the following 20219820Sjeff * disclaimer. 21219820Sjeff * 22219820Sjeff * - Redistributions in binary form must reproduce the above 23219820Sjeff * copyright notice, this list of conditions and the following 24219820Sjeff * disclaimer in the documentation and/or other materials 25219820Sjeff * provided with the distribution. 26219820Sjeff * 27219820Sjeff * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 28219820Sjeff * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 29219820Sjeff * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 30219820Sjeff * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 31219820Sjeff * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 32219820Sjeff * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 33219820Sjeff * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 34219820Sjeff * SOFTWARE. 35219820Sjeff * 36331772Shselasky * $FreeBSD: stable/11/sys/ofed/drivers/infiniband/core/smi.h 331772 2018-03-30 18:17:33Z hselasky $ 37219820Sjeff */ 38219820Sjeff 39219820Sjeff#ifndef __SMI_H_ 40219820Sjeff#define __SMI_H_ 41219820Sjeff 42219820Sjeff#include <rdma/ib_smi.h> 43219820Sjeff 44219820Sjeffenum smi_action { 45219820Sjeff IB_SMI_DISCARD, 46219820Sjeff IB_SMI_HANDLE 47219820Sjeff}; 48219820Sjeff 49219820Sjeffenum smi_forward_action { 50219820Sjeff IB_SMI_LOCAL, /* SMP should be completed up the stack */ 51219820Sjeff IB_SMI_SEND, /* received DR SMP should be forwarded to the send queue */ 52219820Sjeff IB_SMI_FORWARD /* SMP should be forwarded (for switches only) */ 53219820Sjeff}; 54219820Sjeff 55331769Shselaskyenum smi_action smi_handle_dr_smp_recv(struct ib_smp *smp, bool is_switch, 56219820Sjeff int port_num, int phys_port_cnt); 57219820Sjeffint smi_get_fwd_port(struct ib_smp *smp); 58219820Sjeffextern enum smi_forward_action smi_check_forward_dr_smp(struct ib_smp *smp); 59219820Sjeffextern enum smi_action smi_handle_dr_smp_send(struct ib_smp *smp, 60331769Shselasky bool is_switch, int port_num); 61219820Sjeff 62219820Sjeff/* 63219820Sjeff * Return IB_SMI_HANDLE if the SMP should be handled by the local SMA/SM 64219820Sjeff * via process_mad 65219820Sjeff */ 66219820Sjeffstatic inline enum smi_action smi_check_local_smp(struct ib_smp *smp, 67219820Sjeff struct ib_device *device) 68219820Sjeff{ 69219820Sjeff /* C14-9:3 -- We're at the end of the DR segment of path */ 70219820Sjeff /* C14-9:4 -- Hop Pointer = Hop Count + 1 -> give to SMA/SM */ 71219820Sjeff return ((device->process_mad && 72219820Sjeff !ib_get_smp_direction(smp) && 73219820Sjeff (smp->hop_ptr == smp->hop_cnt + 1)) ? 74219820Sjeff IB_SMI_HANDLE : IB_SMI_DISCARD); 75219820Sjeff} 76219820Sjeff 77219820Sjeff/* 78219820Sjeff * Return IB_SMI_HANDLE if the SMP should be handled by the local SMA/SM 79219820Sjeff * via process_mad 80219820Sjeff */ 81219820Sjeffstatic inline enum smi_action smi_check_local_returning_smp(struct ib_smp *smp, 82219820Sjeff struct ib_device *device) 83219820Sjeff{ 84219820Sjeff /* C14-13:3 -- We're at the end of the DR segment of path */ 85219820Sjeff /* C14-13:4 -- Hop Pointer == 0 -> give to SM */ 86219820Sjeff return ((device->process_mad && 87219820Sjeff ib_get_smp_direction(smp) && 88219820Sjeff !smp->hop_ptr) ? IB_SMI_HANDLE : IB_SMI_DISCARD); 89219820Sjeff} 90219820Sjeff 91219820Sjeff#endif /* __SMI_H_ */ 92