cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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opa_smi.h (2880B)

      1/*
      2 * Copyright (c) 2014 Intel Corporation.  All rights reserved.
      3 *
      4 * This software is available to you under a choice of one of two
      5 * licenses.  You may choose to be licensed under the terms of the GNU
      6 * General Public License (GPL) Version 2, available from the file
      7 * COPYING in the main directory of this source tree, or the
      8 * OpenIB.org BSD license below:
      9 *
     10 *     Redistribution and use in source and binary forms, with or
     11 *     without modification, are permitted provided that the following
     12 *     conditions are met:
     13 *
     14 *      - Redistributions of source code must retain the above
     15 *        copyright notice, this list of conditions and the following
     16 *        disclaimer.
     17 *
     18 *      - Redistributions in binary form must reproduce the above
     19 *        copyright notice, this list of conditions and the following
     20 *        disclaimer in the documentation and/or other materials
     21 *        provided with the distribution.
     22 *
     23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
     24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
     26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
     27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
     28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
     29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
     30 * SOFTWARE.
     31 *
     32 */
     33
     34#ifndef __OPA_SMI_H_
     35#define __OPA_SMI_H_
     36
     37#include <rdma/ib_smi.h>
     38#include <rdma/opa_smi.h>
     39
     40#include "smi.h"
     41
     42enum smi_action opa_smi_handle_dr_smp_recv(struct opa_smp *smp, bool is_switch,
     43				       u32 port_num, int phys_port_cnt);
     44int opa_smi_get_fwd_port(struct opa_smp *smp);
     45extern enum smi_forward_action opa_smi_check_forward_dr_smp(struct opa_smp *smp);
     46extern enum smi_action opa_smi_handle_dr_smp_send(struct opa_smp *smp,
     47					      bool is_switch, u32 port_num);
     48
     49/*
     50 * Return IB_SMI_HANDLE if the SMP should be handled by the local SMA/SM
     51 * via process_mad
     52 */
     53static inline enum smi_action opa_smi_check_local_smp(struct opa_smp *smp,
     54						      struct ib_device *device)
     55{
     56	/* C14-9:3 -- We're at the end of the DR segment of path */
     57	/* C14-9:4 -- Hop Pointer = Hop Count + 1 -> give to SMA/SM */
     58	return (device->ops.process_mad &&
     59		!opa_get_smp_direction(smp) &&
     60		(smp->hop_ptr == smp->hop_cnt + 1)) ?
     61		IB_SMI_HANDLE : IB_SMI_DISCARD;
     62}
     63
     64/*
     65 * Return IB_SMI_HANDLE if the SMP should be handled by the local SMA/SM
     66 * via process_mad
     67 */
     68static inline enum smi_action opa_smi_check_local_returning_smp(struct opa_smp *smp,
     69								struct ib_device *device)
     70{
     71	/* C14-13:3 -- We're at the end of the DR segment of path */
     72	/* C14-13:4 -- Hop Pointer == 0 -> give to SM */
     73	return (device->ops.process_mad &&
     74		opa_get_smp_direction(smp) &&
     75		!smp->hop_ptr) ? IB_SMI_HANDLE : IB_SMI_DISCARD;
     76}
     77
     78#endif	/* __OPA_SMI_H_ */