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1/*2 * Copyright (c) 2004 Mellanox Technologies Ltd. All rights reserved.3 * Copyright (c) 2004 Infinicon Corporation. All rights reserved.4 * Copyright (c) 2004 Intel Corporation. All rights reserved.5 * Copyright (c) 2004 Topspin Corporation. All rights reserved.6 * Copyright (c) 2004-2007 Voltaire Corporation. All rights reserved.7 *8 * This software is available to you under a choice of one of two9 * licenses. You may choose to be licensed under the terms of the GNU10 * General Public License (GPL) Version 2, available from the file11 * COPYING in the main directory of this source tree, or the12 * OpenIB.org BSD license below:13 *14 * Redistribution and use in source and binary forms, with or15 * without modification, are permitted provided that the following16 * conditions are met:17 *18 * - Redistributions of source code must retain the above19 * copyright notice, this list of conditions and the following20 * disclaimer.21 *22 * - Redistributions in binary form must reproduce the above23 * copyright notice, this list of conditions and the following24 * disclaimer in the documentation and/or other materials25 * provided with the distribution.26 *27 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,28 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF29 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND30 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS31 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN32 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN33 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE34 * SOFTWARE.35 *36 */37 38#ifndef __SMI_H_39#define __SMI_H_40 41#include <rdma/ib_smi.h>42 43enum smi_action {44 IB_SMI_DISCARD,45 IB_SMI_HANDLE46};47 48enum smi_forward_action {49 IB_SMI_LOCAL, /* SMP should be completed up the stack */50 IB_SMI_SEND, /* received DR SMP should be forwarded to the send queue */51 IB_SMI_FORWARD /* SMP should be forwarded (for switches only) */52};53 54enum smi_action smi_handle_dr_smp_recv(struct ib_smp *smp, bool is_switch,55 u32 port_num, int phys_port_cnt);56int smi_get_fwd_port(struct ib_smp *smp);57extern enum smi_forward_action smi_check_forward_dr_smp(struct ib_smp *smp);58extern enum smi_action smi_handle_dr_smp_send(struct ib_smp *smp,59 bool is_switch, u32 port_num);60 61/*62 * Return IB_SMI_HANDLE if the SMP should be handled by the local SMA/SM63 * via process_mad64 */65static inline enum smi_action smi_check_local_smp(struct ib_smp *smp,66 struct ib_device *device)67{68 /* C14-9:3 -- We're at the end of the DR segment of path */69 /* C14-9:4 -- Hop Pointer = Hop Count + 1 -> give to SMA/SM */70 return ((device->ops.process_mad &&71 !ib_get_smp_direction(smp) &&72 (smp->hop_ptr == smp->hop_cnt + 1)) ?73 IB_SMI_HANDLE : IB_SMI_DISCARD);74}75 76/*77 * Return IB_SMI_HANDLE if the SMP should be handled by the local SMA/SM78 * via process_mad79 */80static inline enum smi_action smi_check_local_returning_smp(struct ib_smp *smp,81 struct ib_device *device)82{83 /* C14-13:3 -- We're at the end of the DR segment of path */84 /* C14-13:4 -- Hop Pointer == 0 -> give to SM */85 return ((device->ops.process_mad &&86 ib_get_smp_direction(smp) &&87 !smp->hop_ptr) ? IB_SMI_HANDLE : IB_SMI_DISCARD);88}89 90#endif /* __SMI_H_ */91