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Many user space API headers have licensing information, which is either
incomplete, badly formatted or just a shorthand for referring to the
license under which the file is supposed to be. This makes it hard for
compliance tools to determine the correct license.
Update these files with an SPDX license identifier. The identifier was
chosen based on the license information in the file.
GPL/LGPL licensed headers get the matching GPL/LGPL SPDX license
identifier with the added 'WITH Linux-syscall-note' exception, which is
the officially assigned exception identifier for the kernel syscall
exception:
NOTE! This copyright does *not* cover user programs that use kernel
services by normal system calls - this is merely considered normal use
of the kernel, and does *not* fall under the heading of "derived work".
This exception makes it possible to include GPL headers into non GPL
code, without confusing license compliance tools.
Headers which have either explicit dual licensing or are just licensed
under a non GPL license are updated with the corresponding SPDX
identifier and the GPLv2 with syscall exception identifier. The format
is:
((GPL-2.0 WITH Linux-syscall-note) OR SPDX-ID-OF-OTHER-LICENSE)
SPDX license identifiers are a legally binding shorthand, which can be
used instead of the full boiler plate text. The update does not remove
existing license information as this has to be done on a case by case
basis and the copyright holders might have to be consulted. This will
happen in a separate step.
This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne. See the previous patch in this series for the
methodology of how this patch was researched.
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
235 lines
8.3 KiB
C
235 lines
8.3 KiB
C
/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) */
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/*
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* Copyright (c) 2004 Topspin Communications. All rights reserved.
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* Copyright (c) 2005 Voltaire, Inc. 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_MAD_H
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#define IB_USER_MAD_H
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#include <linux/types.h>
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#include <rdma/rdma_user_ioctl.h>
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/*
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* Increment this value if any changes that break userspace ABI
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* compatibility are made.
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*/
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#define IB_USER_MAD_ABI_VERSION 5
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/*
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* Make sure that all structs defined in this file remain laid out so
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* that they pack the same way on 32-bit and 64-bit architectures (to
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* avoid incompatibility between 32-bit userspace and 64-bit kernels).
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*/
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/**
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* ib_user_mad_hdr_old - Old version of MAD packet header without pkey_index
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* @id - ID of agent MAD received with/to be sent with
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* @status - 0 on successful receive, ETIMEDOUT if no response
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* received (transaction ID in data[] will be set to TID of original
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* request) (ignored on send)
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* @timeout_ms - Milliseconds to wait for response (unset on receive)
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* @retries - Number of automatic retries to attempt
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* @qpn - Remote QP number received from/to be sent to
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* @qkey - Remote Q_Key to be sent with (unset on receive)
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* @lid - Remote lid received from/to be sent to
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* @sl - Service level received with/to be sent with
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* @path_bits - Local path bits received with/to be sent with
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* @grh_present - If set, GRH was received/should be sent
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* @gid_index - Local GID index to send with (unset on receive)
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* @hop_limit - Hop limit in GRH
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* @traffic_class - Traffic class in GRH
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* @gid - Remote GID in GRH
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* @flow_label - Flow label in GRH
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*/
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struct ib_user_mad_hdr_old {
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__u32 id;
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__u32 status;
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__u32 timeout_ms;
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__u32 retries;
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__u32 length;
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__be32 qpn;
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__be32 qkey;
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__be16 lid;
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__u8 sl;
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__u8 path_bits;
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__u8 grh_present;
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__u8 gid_index;
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__u8 hop_limit;
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__u8 traffic_class;
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__u8 gid[16];
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__be32 flow_label;
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};
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/**
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* ib_user_mad_hdr - MAD packet header
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* This layout allows specifying/receiving the P_Key index. To use
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* this capability, an application must call the
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* IB_USER_MAD_ENABLE_PKEY ioctl on the user MAD file handle before
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* any other actions with the file handle.
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* @id - ID of agent MAD received with/to be sent with
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* @status - 0 on successful receive, ETIMEDOUT if no response
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* received (transaction ID in data[] will be set to TID of original
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* request) (ignored on send)
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* @timeout_ms - Milliseconds to wait for response (unset on receive)
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* @retries - Number of automatic retries to attempt
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* @qpn - Remote QP number received from/to be sent to
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* @qkey - Remote Q_Key to be sent with (unset on receive)
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* @lid - Remote lid received from/to be sent to
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* @sl - Service level received with/to be sent with
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* @path_bits - Local path bits received with/to be sent with
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* @grh_present - If set, GRH was received/should be sent
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* @gid_index - Local GID index to send with (unset on receive)
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* @hop_limit - Hop limit in GRH
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* @traffic_class - Traffic class in GRH
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* @gid - Remote GID in GRH
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* @flow_label - Flow label in GRH
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* @pkey_index - P_Key index
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*/
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struct ib_user_mad_hdr {
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__u32 id;
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__u32 status;
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__u32 timeout_ms;
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__u32 retries;
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__u32 length;
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__be32 qpn;
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__be32 qkey;
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__be16 lid;
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__u8 sl;
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__u8 path_bits;
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__u8 grh_present;
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__u8 gid_index;
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__u8 hop_limit;
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__u8 traffic_class;
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__u8 gid[16];
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__be32 flow_label;
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__u16 pkey_index;
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__u8 reserved[6];
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};
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/**
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* ib_user_mad - MAD packet
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* @hdr - MAD packet header
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* @data - Contents of MAD
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*
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*/
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struct ib_user_mad {
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struct ib_user_mad_hdr hdr;
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__u64 data[0];
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};
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/*
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* Earlier versions of this interface definition declared the
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* method_mask[] member as an array of __u32 but treated it as a
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* bitmap made up of longs in the kernel. This ambiguity meant that
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* 32-bit big-endian applications that can run on both 32-bit and
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* 64-bit kernels had no consistent ABI to rely on, and 64-bit
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* big-endian applications that treated method_mask as being made up
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* of 32-bit words would have their bitmap misinterpreted.
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*
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* To clear up this confusion, we change the declaration of
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* method_mask[] to use unsigned long and handle the conversion from
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* 32-bit userspace to 64-bit kernel for big-endian systems in the
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* compat_ioctl method. Unfortunately, to keep the structure layout
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* the same, we need the method_mask[] array to be aligned only to 4
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* bytes even when long is 64 bits, which forces us into this ugly
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* typedef.
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*/
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typedef unsigned long __attribute__((aligned(4))) packed_ulong;
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#define IB_USER_MAD_LONGS_PER_METHOD_MASK (128 / (8 * sizeof (long)))
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/**
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* ib_user_mad_reg_req - MAD registration request
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* @id - Set by the kernel; used to identify agent in future requests.
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* @qpn - Queue pair number; must be 0 or 1.
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* @method_mask - The caller will receive unsolicited MADs for any method
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* where @method_mask = 1.
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* @mgmt_class - Indicates which management class of MADs should be receive
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* by the caller. This field is only required if the user wishes to
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* receive unsolicited MADs, otherwise it should be 0.
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* @mgmt_class_version - Indicates which version of MADs for the given
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* management class to receive.
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* @oui: Indicates IEEE OUI when mgmt_class is a vendor class
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* in the range from 0x30 to 0x4f. Otherwise not used.
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* @rmpp_version: If set, indicates the RMPP version used.
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*
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*/
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struct ib_user_mad_reg_req {
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__u32 id;
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packed_ulong method_mask[IB_USER_MAD_LONGS_PER_METHOD_MASK];
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__u8 qpn;
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__u8 mgmt_class;
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__u8 mgmt_class_version;
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__u8 oui[3];
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__u8 rmpp_version;
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};
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/**
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* ib_user_mad_reg_req2 - MAD registration request
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*
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* @id - Set by the _kernel_; used by userspace to identify the
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* registered agent in future requests.
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* @qpn - Queue pair number; must be 0 or 1.
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* @mgmt_class - Indicates which management class of MADs should be
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* receive by the caller. This field is only required if
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* the user wishes to receive unsolicited MADs, otherwise
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* it should be 0.
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* @mgmt_class_version - Indicates which version of MADs for the given
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* management class to receive.
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* @res - Ignored.
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* @flags - additional registration flags; Must be in the set of
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* flags defined in IB_USER_MAD_REG_FLAGS_CAP
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* @method_mask - The caller wishes to receive unsolicited MADs for the
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* methods whose bit(s) is(are) set.
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* @oui - Indicates IEEE OUI to use when mgmt_class is a vendor
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* class in the range from 0x30 to 0x4f. Otherwise not
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* used.
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* @rmpp_version - If set, indicates the RMPP version to use.
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*/
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enum {
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IB_USER_MAD_USER_RMPP = (1 << 0),
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};
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#define IB_USER_MAD_REG_FLAGS_CAP (IB_USER_MAD_USER_RMPP)
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struct ib_user_mad_reg_req2 {
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__u32 id;
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__u32 qpn;
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__u8 mgmt_class;
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__u8 mgmt_class_version;
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__u16 res;
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__u32 flags;
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__u64 method_mask[2];
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__u32 oui;
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__u8 rmpp_version;
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__u8 reserved[3];
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};
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#endif /* IB_USER_MAD_H */
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