drivers/infiniband/core/smi.h

   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 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  * $Id: smi.h 1389 2004-12-27 22:56:47Z roland $
  37  */
  38
  39 #ifndef __SMI_H_
  40 #define __SMI_H_
  41
  42 int smi_handle_dr_smp_recv(struct ib_smp *smp,
  43                            u8 node_type,
  44                            int port_num,
  45                            int phys_port_cnt);
  46 extern int smi_check_forward_dr_smp(struct ib_smp *smp);
  47 extern int smi_handle_dr_smp_send(struct ib_smp *smp,
  48                                   u8 node_type,
  49                                   int port_num);
  50 extern int smi_check_local_dr_smp(struct ib_smp *smp,
  51                                   struct ib_device *device,
  52                                   int port_num);
  53
  54 /*
  55  * Return 1 if the SMP should be handled by the local SMA/SM via process_mad
  56  */
  57 static inline int smi_check_local_smp(struct ib_mad_agent *mad_agent,
  58                                       struct ib_smp *smp)
  59 {
  60         /* C14-9:3 -- We're at the end of the DR segment of path */
  61         /* C14-9:4 -- Hop Pointer = Hop Count + 1 -> give to SMA/SM */
  62         return ((mad_agent->device->process_mad &&
  63                 !ib_get_smp_direction(smp) &&
  64                 (smp->hop_ptr == smp->hop_cnt + 1)));
  65 }
  66
  67 #endif  /* __SMI_H_ */