1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause OR GPL-2.0 3 * 4 * Copyright (c) 2004 Mellanox Technologies Ltd. All rights reserved. 5 * Copyright (c) 2004 Infinicon Corporation. All rights reserved. 6 * Copyright (c) 2004 Intel Corporation. All rights reserved. 7 * Copyright (c) 2004 Topspin Corporation. All rights reserved. 8 * Copyright (c) 2004-2007 Voltaire Corporation. All rights reserved. 9 * 10 * This software is available to you under a choice of one of two 11 * licenses. You may choose to be licensed under the terms of the GNU 12 * General Public License (GPL) Version 2, available from the file 13 * COPYING in the main directory of this source tree, or the 14 * OpenIB.org BSD license below: 15 * 16 * Redistribution and use in source and binary forms, with or 17 * without modification, are permitted provided that the following 18 * conditions are met: 19 * 20 * - Redistributions of source code must retain the above 21 * copyright notice, this list of conditions and the following 22 * disclaimer. 23 * 24 * - Redistributions in binary form must reproduce the above 25 * copyright notice, this list of conditions and the following 26 * disclaimer in the documentation and/or other materials 27 * provided with the distribution. 28 * 29 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 30 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 31 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 32 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 33 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 34 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 35 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 36 * SOFTWARE. 37 * 38 * $FreeBSD$ 39 */ 40 41 #ifndef __SMI_H_ 42 #define __SMI_H_ 43 44 #include <rdma/ib_smi.h> 45 46 enum smi_action { 47 IB_SMI_DISCARD, 48 IB_SMI_HANDLE 49 }; 50 51 enum smi_forward_action { 52 IB_SMI_LOCAL, /* SMP should be completed up the stack */ 53 IB_SMI_SEND, /* received DR SMP should be forwarded to the send queue */ 54 IB_SMI_FORWARD /* SMP should be forwarded (for switches only) */ 55 }; 56 57 enum smi_action smi_handle_dr_smp_recv(struct ib_smp *smp, bool is_switch, 58 int port_num, int phys_port_cnt); 59 int smi_get_fwd_port(struct ib_smp *smp); 60 extern enum smi_forward_action smi_check_forward_dr_smp(struct ib_smp *smp); 61 extern enum smi_action smi_handle_dr_smp_send(struct ib_smp *smp, 62 bool is_switch, int port_num); 63 64 /* 65 * Return IB_SMI_HANDLE if the SMP should be handled by the local SMA/SM 66 * via process_mad 67 */ 68 static inline enum smi_action smi_check_local_smp(struct ib_smp *smp, 69 struct ib_device *device) 70 { 71 /* C14-9:3 -- We're at the end of the DR segment of path */ 72 /* C14-9:4 -- Hop Pointer = Hop Count + 1 -> give to SMA/SM */ 73 return ((device->process_mad && 74 !ib_get_smp_direction(smp) && 75 (smp->hop_ptr == smp->hop_cnt + 1)) ? 76 IB_SMI_HANDLE : IB_SMI_DISCARD); 77 } 78 79 /* 80 * Return IB_SMI_HANDLE if the SMP should be handled by the local SMA/SM 81 * via process_mad 82 */ 83 static inline enum smi_action smi_check_local_returning_smp(struct ib_smp *smp, 84 struct ib_device *device) 85 { 86 /* C14-13:3 -- We're at the end of the DR segment of path */ 87 /* C14-13:4 -- Hop Pointer == 0 -> give to SM */ 88 return ((device->process_mad && 89 ib_get_smp_direction(smp) && 90 !smp->hop_ptr) ? IB_SMI_HANDLE : IB_SMI_DISCARD); 91 } 92 93 #endif /* __SMI_H_ */ 94