/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR Linux-OpenIB) */ /* * Copyright ( c ) 2004 Topspin Communications . All rights reserved . * Copyright ( c ) 2005 Voltaire , Inc . All rights reserved . * * This software is available to you under a choice of one of two * licenses . You may choose to be licensed under the terms of the GNU * General Public License ( GPL ) Version 2 , available from the file * COPYING in the main directory of this source tree , or the * OpenIB . org BSD license below : * * Redistribution and use in source and binary forms , with or * without modification , are permitted provided that the following * conditions are met : * * - Redistributions of source code must retain the above * copyright notice , this list of conditions and the following * disclaimer . * * - Redistributions in binary form must reproduce the above * copyright notice , this list of conditions and the following * disclaimer in the documentation and / or other materials * provided with the distribution . * * THE SOFTWARE IS PROVIDED " AS IS " , WITHOUT WARRANTY OF ANY KIND , * EXPRESS OR IMPLIED , INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY , FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT . IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM , DAMAGES OR OTHER LIABILITY , WHETHER IN AN * ACTION OF CONTRACT , TORT OR OTHERWISE , ARISING FROM , OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE . #ifndef IB_USER_MAD_H#define IB_USER_MAD_H#include <linux/types.h>#include <rdma/rdma_user_ioctl.h>/* * Increment this value if any changes that break userspace ABI * compatibility are made . #define IB_USER_MAD_ABI_VERSION 5 /* * Make sure that all structs defined in this file remain laid out so * that they pack the same way on 32 - bit and 64 - bit architectures ( to * avoid incompatibility between 32 - bit userspace and 64 - bit kernels ) . /** * ib_user_mad_hdr_old - Old version of MAD packet header without pkey_index * @ id - ID of agent MAD received with / to be sent with * @ status - 0 on successful receive , ETIMEDOUT if no response * received ( transaction ID in data [ ] will be set to TID of original * request ) ( ignored on send ) * @ timeout_ms - Milliseconds to wait for response ( unset on receive ) * @ retries - Number of automatic retries to attempt * @ qpn - Remote QP number received from / to be sent to * @ qkey - Remote Q_Key to be sent with ( unset on receive ) * @ lid - Remote lid received from / to be sent to * @ sl - Service level received with / to be sent with * @ path_bits - Local path bits received with / to be sent with * @ grh_present - If set , GRH was received / should be sent * @ gid_index - Local GID index to send with ( unset on receive ) * @ hop_limit - Hop limit in GRH * @ traffic_class - Traffic class in GRH * @ gid - Remote GID in GRH * @ flow_label - Flow label in GRH struct ib_user_mad_hdr_old {16 ];/** * ib_user_mad_hdr - MAD packet header * This layout allows specifying / receiving the P_Key index . To use * this capability , an application must call the * IB_USER_MAD_ENABLE_PKEY ioctl on the user MAD file handle before * any other actions with the file handle . * @ id - ID of agent MAD received with / to be sent with * @ status - 0 on successful receive , ETIMEDOUT if no response * received ( transaction ID in data [ ] will be set to TID of original * request ) ( ignored on send ) * @ timeout_ms - Milliseconds to wait for response ( unset on receive ) * @ retries - Number of automatic retries to attempt * @ qpn - Remote QP number received from / to be sent to * @ qkey - Remote Q_Key to be sent with ( unset on receive ) * @ lid - Remote lid received from / to be sent to * @ sl - Service level received with / to be sent with * @ path_bits - Local path bits received with / to be sent with * @ grh_present - If set , GRH was received / should be sent * @ gid_index - Local GID index to send with ( unset on receive ) * @ hop_limit - Hop limit in GRH * @ traffic_class - Traffic class in GRH * @ gid - Remote GID in GRH * @ flow_label - Flow label in GRH * @ pkey_index - P_Key index struct ib_user_mad_hdr {16 ];6 ];/** * ib_user_mad - MAD packet * @ hdr - MAD packet header * @ data - Contents of MAD * struct ib_user_mad {struct ib_user_mad_hdr hdr;/* * Earlier versions of this interface definition declared the * method_mask [ ] member as an array of _ _ u32 but treated it as a * bitmap made up of longs in the kernel . This ambiguity meant that * 32 - bit big - endian applications that can run on both 32 - bit and * 64 - bit kernels had no consistent ABI to rely on , and 64 - bit * big - endian applications that treated method_mask as being made up * of 32 - bit words would have their bitmap misinterpreted . * * To clear up this confusion , we change the declaration of * method_mask [ ] to use unsigned long and handle the conversion from * 32 - bit userspace to 64 - bit kernel for big - endian systems in the * compat_ioctl method . Unfortunately , to keep the structure layout * the same , we need the method_mask [ ] array to be aligned only to 4 * bytes even when long is 64 bits , which forces us into this ugly * typedef . typedef unsigned long __attribute__((aligned(4 ))) packed_ulong;#define IB_USER_MAD_LONGS_PER_METHOD_MASK (128 / (8 * sizeof (long )))/** * ib_user_mad_reg_req - MAD registration request * @ id - Set by the kernel ; used to identify agent in future requests . * @ qpn - Queue pair number ; must be 0 or 1 . * @ method_mask - The caller will receive unsolicited MADs for any method * where @ method_mask = 1 . * @ mgmt_class - Indicates which management class of MADs should be receive * by the caller . This field is only required if the user wishes to * receive unsolicited MADs , otherwise it should be 0 . * @ mgmt_class_version - Indicates which version of MADs for the given * management class to receive . * @ oui : Indicates IEEE OUI when mgmt_class is a vendor class * in the range from 0 x30 to 0 x4f . Otherwise not used . * @ rmpp_version : If set , indicates the RMPP version used . * struct ib_user_mad_reg_req {3 ];/** * ib_user_mad_reg_req2 - MAD registration request * * @ id - Set by the _ kernel_ ; used by userspace to identify the * registered agent in future requests . * @ qpn - Queue pair number ; must be 0 or 1 . * @ mgmt_class - Indicates which management class of MADs should be * receive by the caller . This field is only required if * the user wishes to receive unsolicited MADs , otherwise * it should be 0 . * @ mgmt_class_version - Indicates which version of MADs for the given * management class to receive . * @ res - Ignored . * @ flags - additional registration flags ; Must be in the set of * flags defined in IB_USER_MAD_REG_FLAGS_CAP * @ method_mask - The caller wishes to receive unsolicited MADs for the * methods whose bit ( s ) is ( are ) set . * @ oui - Indicates IEEE OUI to use when mgmt_class is a vendor * class in the range from 0 x30 to 0 x4f . Otherwise not * used . * @ rmpp_version - If set , indicates the RMPP version to use . enum {1 << 0 ),#define IB_USER_MAD_REG_FLAGS_CAP (IB_USER_MAD_USER_RMPP)struct ib_user_mad_reg_req2 {2 ];3 ];#endif /* IB_USER_MAD_H */
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