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 two 9 * licenses. You may choose to be licensed under the terms of the GNU 10 * General Public License (GPL) Version 2, available from the file 11 * COPYING in the main directory of this source tree, or the 12 * OpenIB.org BSD license below: 13 * 14 * Redistribution and use in source and binary forms, with or 15 * without modification, are permitted provided that the following 16 * conditions are met: 17 * 18 * - Redistributions of source code must retain the above 19 * copyright notice, this list of conditions and the following 20 * disclaimer. 21 * 22 * - Redistributions in binary form must reproduce the above 23 * copyright notice, this list of conditions and the following 24 * disclaimer in the documentation and/or other materials 25 * 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 OF 29 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 30 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 31 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 32 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 33 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 34 * SOFTWARE. 35 * 36 */ 37 38 #ifndef __SMI_H_ 39 #define __SMI_H_ 40 41 #include <rdma/ib_smi.h> 42 43 enum smi_action { 44 IB_SMI_DISCARD, 45 IB_SMI_HANDLE 46 }; 47 48 enum 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 54 enum smi_action smi_handle_dr_smp_recv(struct ib_smp *smp, bool is_switch, 55 int port_num, int phys_port_cnt); 56 int smi_get_fwd_port(struct ib_smp *smp); 57 extern enum smi_forward_action smi_check_forward_dr_smp(struct ib_smp *smp); 58 extern enum smi_action smi_handle_dr_smp_send(struct ib_smp *smp, 59 bool is_switch, int port_num); 60 61 /* 62 * Return IB_SMI_HANDLE if the SMP should be handled by the local SMA/SM 63 * via process_mad 64 */ 65 static 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/SM 78 * via process_mad 79 */ 80 static 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