a7ca1f00ed
Export rdma_set_ib_paths to user space to allow applications to manually set the IB path used for connections. This allows alternative ways for a user space application or library to obtain path record information, including retrieving path information from cached data, avoiding direct interaction with the IB SA. The IB SA is a single, centralized entity that can limit scaling on large clusters running MPI applications. Future changes to the rdma cm can expand on this framework to support the full range of features allowed by the IB CM, such as separate forward and reverse paths and APM. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Reviewed-By: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
77 lines
2.2 KiB
C
77 lines
2.2 KiB
C
/*
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* Copyright (c) 2005 Intel 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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#ifndef IB_USER_SA_H
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#define IB_USER_SA_H
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#include <linux/types.h>
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enum {
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IB_PATH_GMP = 1,
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IB_PATH_PRIMARY = (1<<1),
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IB_PATH_ALTERNATE = (1<<2),
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IB_PATH_OUTBOUND = (1<<3),
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IB_PATH_INBOUND = (1<<4),
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IB_PATH_INBOUND_REVERSE = (1<<5),
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IB_PATH_BIDIRECTIONAL = IB_PATH_OUTBOUND | IB_PATH_INBOUND_REVERSE
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};
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struct ib_path_rec_data {
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__u32 flags;
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__u32 reserved;
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__u32 path_rec[16];
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};
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struct ib_user_path_rec {
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__u8 dgid[16];
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__u8 sgid[16];
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__be16 dlid;
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__be16 slid;
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__u32 raw_traffic;
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__be32 flow_label;
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__u32 reversible;
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__u32 mtu;
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__be16 pkey;
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__u8 hop_limit;
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__u8 traffic_class;
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__u8 numb_path;
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__u8 sl;
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__u8 mtu_selector;
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__u8 rate_selector;
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__u8 rate;
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__u8 packet_life_time_selector;
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__u8 packet_life_time;
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__u8 preference;
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};
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#endif /* IB_USER_SA_H */
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