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The local loopback of an outgoing DR SMP response is limited to those that originate at the driver specific SMA implementation during the driver specific process_mad() function. This patch enables a returning DR SMP originating in userspace (or elsewhere) to be delivered to the local managment stack. In this specific case the driver process_mad() function does not consume or process the MAD, so a reponse mad has not be created and the original MAD must manually be copied to the MAD buffer that is to be handed off to the local agent. Signed-off-by: Steve Welch <swelch@systemfabricworks.com> Acked-by: Hal Rosenstock <hal@xsigo.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
91 lines
3.3 KiB
C
91 lines
3.3 KiB
C
/*
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* Copyright (c) 2004 Mellanox Technologies Ltd. All rights reserved.
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* Copyright (c) 2004 Infinicon Corporation. All rights reserved.
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* Copyright (c) 2004 Intel Corporation. All rights reserved.
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* Copyright (c) 2004 Topspin Corporation. All rights reserved.
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* Copyright (c) 2004-2007 Voltaire Corporation. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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*/
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#ifndef __SMI_H_
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#define __SMI_H_
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#include <rdma/ib_smi.h>
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enum smi_action {
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IB_SMI_DISCARD,
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IB_SMI_HANDLE
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};
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enum smi_forward_action {
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IB_SMI_LOCAL, /* SMP should be completed up the stack */
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IB_SMI_SEND, /* received DR SMP should be forwarded to the send queue */
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IB_SMI_FORWARD /* SMP should be forwarded (for switches only) */
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};
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enum smi_action smi_handle_dr_smp_recv(struct ib_smp *smp, u8 node_type,
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int port_num, int phys_port_cnt);
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int smi_get_fwd_port(struct ib_smp *smp);
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extern enum smi_forward_action smi_check_forward_dr_smp(struct ib_smp *smp);
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extern enum smi_action smi_handle_dr_smp_send(struct ib_smp *smp,
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u8 node_type, int port_num);
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/*
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* Return IB_SMI_HANDLE if the SMP should be handled by the local SMA/SM
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* via process_mad
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*/
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static inline enum smi_action smi_check_local_smp(struct ib_smp *smp,
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struct ib_device *device)
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{
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/* C14-9:3 -- We're at the end of the DR segment of path */
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/* C14-9:4 -- Hop Pointer = Hop Count + 1 -> give to SMA/SM */
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return ((device->process_mad &&
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!ib_get_smp_direction(smp) &&
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(smp->hop_ptr == smp->hop_cnt + 1)) ?
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IB_SMI_HANDLE : IB_SMI_DISCARD);
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}
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/*
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* Return IB_SMI_HANDLE if the SMP should be handled by the local SMA/SM
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* via process_mad
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*/
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static inline enum smi_action smi_check_local_returning_smp(struct ib_smp *smp,
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struct ib_device *device)
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{
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/* C14-13:3 -- We're at the end of the DR segment of path */
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/* C14-13:4 -- Hop Pointer == 0 -> give to SM */
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return ((device->process_mad &&
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ib_get_smp_direction(smp) &&
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!smp->hop_ptr) ? IB_SMI_HANDLE : IB_SMI_DISCARD);
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}
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#endif /* __SMI_H_ */
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