820 lines
24 KiB
C
820 lines
24 KiB
C
/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
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/*
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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) 2004-2006 Voltaire Corporation. All rights reserved.
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*/
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#ifndef IB_MAD_H
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#define IB_MAD_H
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#include <linux/list.h>
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#include <rdma/ib_verbs.h>
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#include <uapi/rdma/ib_user_mad.h>
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/* Management base versions */
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#define IB_MGMT_BASE_VERSION 1
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#define OPA_MGMT_BASE_VERSION 0x80
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#define OPA_SM_CLASS_VERSION 0x80
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/* Management classes */
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#define IB_MGMT_CLASS_SUBN_LID_ROUTED 0x01
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#define IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE 0x81
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#define IB_MGMT_CLASS_SUBN_ADM 0x03
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#define IB_MGMT_CLASS_PERF_MGMT 0x04
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#define IB_MGMT_CLASS_BM 0x05
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#define IB_MGMT_CLASS_DEVICE_MGMT 0x06
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#define IB_MGMT_CLASS_CM 0x07
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#define IB_MGMT_CLASS_SNMP 0x08
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#define IB_MGMT_CLASS_DEVICE_ADM 0x10
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#define IB_MGMT_CLASS_BOOT_MGMT 0x11
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#define IB_MGMT_CLASS_BIS 0x12
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#define IB_MGMT_CLASS_CONG_MGMT 0x21
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#define IB_MGMT_CLASS_VENDOR_RANGE2_START 0x30
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#define IB_MGMT_CLASS_VENDOR_RANGE2_END 0x4F
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#define IB_OPENIB_OUI (0x001405)
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/* Management methods */
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#define IB_MGMT_METHOD_GET 0x01
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#define IB_MGMT_METHOD_SET 0x02
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#define IB_MGMT_METHOD_GET_RESP 0x81
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#define IB_MGMT_METHOD_SEND 0x03
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#define IB_MGMT_METHOD_TRAP 0x05
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#define IB_MGMT_METHOD_REPORT 0x06
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#define IB_MGMT_METHOD_REPORT_RESP 0x86
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#define IB_MGMT_METHOD_TRAP_REPRESS 0x07
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#define IB_MGMT_METHOD_RESP 0x80
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#define IB_BM_ATTR_MOD_RESP cpu_to_be32(1)
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#define IB_MGMT_MAX_METHODS 128
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/* MAD Status field bit masks */
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#define IB_MGMT_MAD_STATUS_SUCCESS 0x0000
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#define IB_MGMT_MAD_STATUS_BUSY 0x0001
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#define IB_MGMT_MAD_STATUS_REDIRECT_REQD 0x0002
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#define IB_MGMT_MAD_STATUS_BAD_VERSION 0x0004
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#define IB_MGMT_MAD_STATUS_UNSUPPORTED_METHOD 0x0008
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#define IB_MGMT_MAD_STATUS_UNSUPPORTED_METHOD_ATTRIB 0x000c
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#define IB_MGMT_MAD_STATUS_INVALID_ATTRIB_VALUE 0x001c
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/* RMPP information */
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#define IB_MGMT_RMPP_VERSION 1
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#define IB_MGMT_RMPP_TYPE_DATA 1
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#define IB_MGMT_RMPP_TYPE_ACK 2
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#define IB_MGMT_RMPP_TYPE_STOP 3
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#define IB_MGMT_RMPP_TYPE_ABORT 4
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#define IB_MGMT_RMPP_FLAG_ACTIVE 1
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#define IB_MGMT_RMPP_FLAG_FIRST (1<<1)
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#define IB_MGMT_RMPP_FLAG_LAST (1<<2)
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#define IB_MGMT_RMPP_NO_RESPTIME 0x1F
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#define IB_MGMT_RMPP_STATUS_SUCCESS 0
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#define IB_MGMT_RMPP_STATUS_RESX 1
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#define IB_MGMT_RMPP_STATUS_ABORT_MIN 118
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#define IB_MGMT_RMPP_STATUS_T2L 118
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#define IB_MGMT_RMPP_STATUS_BAD_LEN 119
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#define IB_MGMT_RMPP_STATUS_BAD_SEG 120
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#define IB_MGMT_RMPP_STATUS_BADT 121
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#define IB_MGMT_RMPP_STATUS_W2S 122
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#define IB_MGMT_RMPP_STATUS_S2B 123
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#define IB_MGMT_RMPP_STATUS_BAD_STATUS 124
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#define IB_MGMT_RMPP_STATUS_UNV 125
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#define IB_MGMT_RMPP_STATUS_TMR 126
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#define IB_MGMT_RMPP_STATUS_UNSPEC 127
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#define IB_MGMT_RMPP_STATUS_ABORT_MAX 127
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#define IB_QP0 0
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#define IB_QP1 cpu_to_be32(1)
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#define IB_QP1_QKEY 0x80010000
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#define IB_QP_SET_QKEY 0x80000000
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#define IB_DEFAULT_PKEY_PARTIAL 0x7FFF
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#define IB_DEFAULT_PKEY_FULL 0xFFFF
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/*
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* Generic trap/notice types
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*/
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#define IB_NOTICE_TYPE_FATAL 0x80
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#define IB_NOTICE_TYPE_URGENT 0x81
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#define IB_NOTICE_TYPE_SECURITY 0x82
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#define IB_NOTICE_TYPE_SM 0x83
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#define IB_NOTICE_TYPE_INFO 0x84
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/*
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* Generic trap/notice producers
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*/
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#define IB_NOTICE_PROD_CA cpu_to_be16(1)
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#define IB_NOTICE_PROD_SWITCH cpu_to_be16(2)
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#define IB_NOTICE_PROD_ROUTER cpu_to_be16(3)
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#define IB_NOTICE_PROD_CLASS_MGR cpu_to_be16(4)
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enum {
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IB_MGMT_MAD_HDR = 24,
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IB_MGMT_MAD_DATA = 232,
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IB_MGMT_RMPP_HDR = 36,
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IB_MGMT_RMPP_DATA = 220,
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IB_MGMT_VENDOR_HDR = 40,
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IB_MGMT_VENDOR_DATA = 216,
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IB_MGMT_SA_HDR = 56,
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IB_MGMT_SA_DATA = 200,
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IB_MGMT_DEVICE_HDR = 64,
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IB_MGMT_DEVICE_DATA = 192,
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IB_MGMT_MAD_SIZE = IB_MGMT_MAD_HDR + IB_MGMT_MAD_DATA,
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OPA_MGMT_MAD_DATA = 2024,
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OPA_MGMT_RMPP_DATA = 2012,
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OPA_MGMT_MAD_SIZE = IB_MGMT_MAD_HDR + OPA_MGMT_MAD_DATA,
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};
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struct ib_mad_hdr {
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u8 base_version;
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u8 mgmt_class;
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u8 class_version;
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u8 method;
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__be16 status;
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__be16 class_specific;
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__be64 tid;
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__be16 attr_id;
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__be16 resv;
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__be32 attr_mod;
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};
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struct ib_rmpp_hdr {
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u8 rmpp_version;
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u8 rmpp_type;
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u8 rmpp_rtime_flags;
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u8 rmpp_status;
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__be32 seg_num;
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__be32 paylen_newwin;
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};
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typedef u64 __bitwise ib_sa_comp_mask;
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#define IB_SA_COMP_MASK(n) ((__force ib_sa_comp_mask) cpu_to_be64(1ull << (n)))
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/*
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* ib_sa_hdr and ib_sa_mad structures must be packed because they have
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* 64-bit fields that are only 32-bit aligned. 64-bit architectures will
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* lay them out wrong otherwise. (And unfortunately they are sent on
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* the wire so we can't change the layout)
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*/
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struct ib_sa_hdr {
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__be64 sm_key;
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__be16 attr_offset;
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__be16 reserved;
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ib_sa_comp_mask comp_mask;
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} __packed;
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struct ib_mad {
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struct ib_mad_hdr mad_hdr;
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u8 data[IB_MGMT_MAD_DATA];
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};
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struct opa_mad {
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struct ib_mad_hdr mad_hdr;
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u8 data[OPA_MGMT_MAD_DATA];
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};
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struct ib_rmpp_mad {
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struct ib_mad_hdr mad_hdr;
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struct ib_rmpp_hdr rmpp_hdr;
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u8 data[IB_MGMT_RMPP_DATA];
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};
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struct opa_rmpp_mad {
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struct ib_mad_hdr mad_hdr;
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struct ib_rmpp_hdr rmpp_hdr;
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u8 data[OPA_MGMT_RMPP_DATA];
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};
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struct ib_sa_mad {
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struct ib_mad_hdr mad_hdr;
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struct ib_rmpp_hdr rmpp_hdr;
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struct ib_sa_hdr sa_hdr;
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u8 data[IB_MGMT_SA_DATA];
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} __packed;
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struct ib_vendor_mad {
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struct ib_mad_hdr mad_hdr;
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struct ib_rmpp_hdr rmpp_hdr;
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u8 reserved;
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u8 oui[3];
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u8 data[IB_MGMT_VENDOR_DATA];
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};
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#define IB_MGMT_CLASSPORTINFO_ATTR_ID cpu_to_be16(0x0001)
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#define IB_CLASS_PORT_INFO_RESP_TIME_MASK 0x1F
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#define IB_CLASS_PORT_INFO_RESP_TIME_FIELD_SIZE 5
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struct ib_class_port_info {
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u8 base_version;
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u8 class_version;
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__be16 capability_mask;
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/* 27 bits for cap_mask2, 5 bits for resp_time */
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__be32 cap_mask2_resp_time;
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u8 redirect_gid[16];
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__be32 redirect_tcslfl;
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__be16 redirect_lid;
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__be16 redirect_pkey;
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__be32 redirect_qp;
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__be32 redirect_qkey;
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u8 trap_gid[16];
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__be32 trap_tcslfl;
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__be16 trap_lid;
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__be16 trap_pkey;
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__be32 trap_hlqp;
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__be32 trap_qkey;
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};
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/* PortInfo CapabilityMask */
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enum ib_port_capability_mask_bits {
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IB_PORT_SM = 1 << 1,
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IB_PORT_NOTICE_SUP = 1 << 2,
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IB_PORT_TRAP_SUP = 1 << 3,
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IB_PORT_OPT_IPD_SUP = 1 << 4,
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IB_PORT_AUTO_MIGR_SUP = 1 << 5,
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IB_PORT_SL_MAP_SUP = 1 << 6,
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IB_PORT_MKEY_NVRAM = 1 << 7,
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IB_PORT_PKEY_NVRAM = 1 << 8,
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IB_PORT_LED_INFO_SUP = 1 << 9,
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IB_PORT_SM_DISABLED = 1 << 10,
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IB_PORT_SYS_IMAGE_GUID_SUP = 1 << 11,
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IB_PORT_PKEY_SW_EXT_PORT_TRAP_SUP = 1 << 12,
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IB_PORT_EXTENDED_SPEEDS_SUP = 1 << 14,
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IB_PORT_CAP_MASK2_SUP = 1 << 15,
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IB_PORT_CM_SUP = 1 << 16,
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IB_PORT_SNMP_TUNNEL_SUP = 1 << 17,
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IB_PORT_REINIT_SUP = 1 << 18,
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IB_PORT_DEVICE_MGMT_SUP = 1 << 19,
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IB_PORT_VENDOR_CLASS_SUP = 1 << 20,
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IB_PORT_DR_NOTICE_SUP = 1 << 21,
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IB_PORT_CAP_MASK_NOTICE_SUP = 1 << 22,
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IB_PORT_BOOT_MGMT_SUP = 1 << 23,
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IB_PORT_LINK_LATENCY_SUP = 1 << 24,
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IB_PORT_CLIENT_REG_SUP = 1 << 25,
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IB_PORT_OTHER_LOCAL_CHANGES_SUP = 1 << 26,
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IB_PORT_LINK_SPEED_WIDTH_TABLE_SUP = 1 << 27,
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IB_PORT_VENDOR_SPECIFIC_MADS_TABLE_SUP = 1 << 28,
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IB_PORT_MCAST_PKEY_TRAP_SUPPRESSION_SUP = 1 << 29,
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IB_PORT_MCAST_FDB_TOP_SUP = 1 << 30,
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IB_PORT_HIERARCHY_INFO_SUP = 1ULL << 31,
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};
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enum ib_port_capability_mask2_bits {
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IB_PORT_SET_NODE_DESC_SUP = 1 << 0,
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IB_PORT_EX_PORT_INFO_EX_SUP = 1 << 1,
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IB_PORT_VIRT_SUP = 1 << 2,
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IB_PORT_SWITCH_PORT_STATE_TABLE_SUP = 1 << 3,
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IB_PORT_LINK_WIDTH_2X_SUP = 1 << 4,
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IB_PORT_LINK_SPEED_HDR_SUP = 1 << 5,
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IB_PORT_LINK_SPEED_NDR_SUP = 1 << 10,
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};
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#define OPA_CLASS_PORT_INFO_PR_SUPPORT BIT(26)
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struct opa_class_port_info {
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u8 base_version;
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u8 class_version;
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__be16 cap_mask;
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__be32 cap_mask2_resp_time;
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u8 redirect_gid[16];
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__be32 redirect_tc_fl;
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__be32 redirect_lid;
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__be32 redirect_sl_qp;
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__be32 redirect_qkey;
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u8 trap_gid[16];
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__be32 trap_tc_fl;
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__be32 trap_lid;
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__be32 trap_hl_qp;
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__be32 trap_qkey;
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__be16 trap_pkey;
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__be16 redirect_pkey;
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u8 trap_sl_rsvd;
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u8 reserved[3];
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} __packed;
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/**
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* ib_get_cpi_resp_time - Returns the resp_time value from
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* cap_mask2_resp_time in ib_class_port_info.
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* @cpi: A struct ib_class_port_info mad.
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*/
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static inline u8 ib_get_cpi_resp_time(struct ib_class_port_info *cpi)
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{
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return (u8)(be32_to_cpu(cpi->cap_mask2_resp_time) &
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IB_CLASS_PORT_INFO_RESP_TIME_MASK);
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}
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/**
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* ib_set_cpi_resptime - Sets the response time in an
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* ib_class_port_info mad.
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* @cpi: A struct ib_class_port_info.
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* @rtime: The response time to set.
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*/
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static inline void ib_set_cpi_resp_time(struct ib_class_port_info *cpi,
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u8 rtime)
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{
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cpi->cap_mask2_resp_time =
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(cpi->cap_mask2_resp_time &
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cpu_to_be32(~IB_CLASS_PORT_INFO_RESP_TIME_MASK)) |
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cpu_to_be32(rtime & IB_CLASS_PORT_INFO_RESP_TIME_MASK);
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}
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/**
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* ib_get_cpi_capmask2 - Returns the capmask2 value from
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* cap_mask2_resp_time in ib_class_port_info.
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* @cpi: A struct ib_class_port_info mad.
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*/
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static inline u32 ib_get_cpi_capmask2(struct ib_class_port_info *cpi)
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{
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return (be32_to_cpu(cpi->cap_mask2_resp_time) >>
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IB_CLASS_PORT_INFO_RESP_TIME_FIELD_SIZE);
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}
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/**
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* ib_set_cpi_capmask2 - Sets the capmask2 in an
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* ib_class_port_info mad.
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* @cpi: A struct ib_class_port_info.
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* @capmask2: The capmask2 to set.
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*/
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static inline void ib_set_cpi_capmask2(struct ib_class_port_info *cpi,
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u32 capmask2)
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{
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cpi->cap_mask2_resp_time =
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(cpi->cap_mask2_resp_time &
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cpu_to_be32(IB_CLASS_PORT_INFO_RESP_TIME_MASK)) |
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cpu_to_be32(capmask2 <<
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IB_CLASS_PORT_INFO_RESP_TIME_FIELD_SIZE);
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}
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/**
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* opa_get_cpi_capmask2 - Returns the capmask2 value from
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* cap_mask2_resp_time in ib_class_port_info.
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* @cpi: A struct opa_class_port_info mad.
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*/
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static inline u32 opa_get_cpi_capmask2(struct opa_class_port_info *cpi)
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{
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return (be32_to_cpu(cpi->cap_mask2_resp_time) >>
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IB_CLASS_PORT_INFO_RESP_TIME_FIELD_SIZE);
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}
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struct ib_mad_notice_attr {
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u8 generic_type;
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u8 prod_type_msb;
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__be16 prod_type_lsb;
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__be16 trap_num;
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__be16 issuer_lid;
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__be16 toggle_count;
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union {
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struct {
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u8 details[54];
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} raw_data;
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struct {
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__be16 reserved;
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__be16 lid; /* where violation happened */
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u8 port_num; /* where violation happened */
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} __packed ntc_129_131;
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struct {
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__be16 reserved;
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__be16 lid; /* LID where change occurred */
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u8 reserved2;
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u8 local_changes; /* low bit - local changes */
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__be32 new_cap_mask; /* new capability mask */
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u8 reserved3;
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u8 change_flags; /* low 3 bits only */
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} __packed ntc_144;
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struct {
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__be16 reserved;
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__be16 lid; /* lid where sys guid changed */
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__be16 reserved2;
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__be64 new_sys_guid;
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} __packed ntc_145;
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struct {
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__be16 reserved;
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__be16 lid;
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__be16 dr_slid;
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u8 method;
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u8 reserved2;
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__be16 attr_id;
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__be32 attr_mod;
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__be64 mkey;
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u8 reserved3;
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u8 dr_trunc_hop;
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u8 dr_rtn_path[30];
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} __packed ntc_256;
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struct {
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__be16 reserved;
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__be16 lid1;
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__be16 lid2;
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__be32 key;
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__be32 sl_qp1; /* SL: high 4 bits */
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__be32 qp2; /* high 8 bits reserved */
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union ib_gid gid1;
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union ib_gid gid2;
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} __packed ntc_257_258;
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} details;
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};
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/**
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* ib_mad_send_buf - MAD data buffer and work request for sends.
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* @next: A pointer used to chain together MADs for posting.
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* @mad: References an allocated MAD data buffer for MADs that do not have
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* RMPP active. For MADs using RMPP, references the common and management
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* class specific headers.
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* @mad_agent: MAD agent that allocated the buffer.
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* @ah: The address handle to use when sending the MAD.
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* @context: User-controlled context fields.
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* @hdr_len: Indicates the size of the data header of the MAD. This length
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* includes the common MAD, RMPP, and class specific headers.
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* @data_len: Indicates the total size of user-transferred data.
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* @seg_count: The number of RMPP segments allocated for this send.
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* @seg_size: Size of the data in each RMPP segment. This does not include
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* class specific headers.
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* @seg_rmpp_size: Size of each RMPP segment including the class specific
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* headers.
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* @timeout_ms: Time to wait for a response.
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* @retries: Number of times to retry a request for a response. For MADs
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* using RMPP, this applies per window. On completion, returns the number
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* of retries needed to complete the transfer.
|
|
*
|
|
* Users are responsible for initializing the MAD buffer itself, with the
|
|
* exception of any RMPP header. Additional segment buffer space allocated
|
|
* beyond data_len is padding.
|
|
*/
|
|
struct ib_mad_send_buf {
|
|
struct ib_mad_send_buf *next;
|
|
void *mad;
|
|
struct ib_mad_agent *mad_agent;
|
|
struct ib_ah *ah;
|
|
void *context[2];
|
|
int hdr_len;
|
|
int data_len;
|
|
int seg_count;
|
|
int seg_size;
|
|
int seg_rmpp_size;
|
|
int timeout_ms;
|
|
int retries;
|
|
};
|
|
|
|
/**
|
|
* ib_response_mad - Returns if the specified MAD has been generated in
|
|
* response to a sent request or trap.
|
|
*/
|
|
int ib_response_mad(const struct ib_mad_hdr *hdr);
|
|
|
|
/**
|
|
* ib_get_rmpp_resptime - Returns the RMPP response time.
|
|
* @rmpp_hdr: An RMPP header.
|
|
*/
|
|
static inline u8 ib_get_rmpp_resptime(struct ib_rmpp_hdr *rmpp_hdr)
|
|
{
|
|
return rmpp_hdr->rmpp_rtime_flags >> 3;
|
|
}
|
|
|
|
/**
|
|
* ib_get_rmpp_flags - Returns the RMPP flags.
|
|
* @rmpp_hdr: An RMPP header.
|
|
*/
|
|
static inline u8 ib_get_rmpp_flags(struct ib_rmpp_hdr *rmpp_hdr)
|
|
{
|
|
return rmpp_hdr->rmpp_rtime_flags & 0x7;
|
|
}
|
|
|
|
/**
|
|
* ib_set_rmpp_resptime - Sets the response time in an RMPP header.
|
|
* @rmpp_hdr: An RMPP header.
|
|
* @rtime: The response time to set.
|
|
*/
|
|
static inline void ib_set_rmpp_resptime(struct ib_rmpp_hdr *rmpp_hdr, u8 rtime)
|
|
{
|
|
rmpp_hdr->rmpp_rtime_flags = ib_get_rmpp_flags(rmpp_hdr) | (rtime << 3);
|
|
}
|
|
|
|
/**
|
|
* ib_set_rmpp_flags - Sets the flags in an RMPP header.
|
|
* @rmpp_hdr: An RMPP header.
|
|
* @flags: The flags to set.
|
|
*/
|
|
static inline void ib_set_rmpp_flags(struct ib_rmpp_hdr *rmpp_hdr, u8 flags)
|
|
{
|
|
rmpp_hdr->rmpp_rtime_flags = (rmpp_hdr->rmpp_rtime_flags & 0xF8) |
|
|
(flags & 0x7);
|
|
}
|
|
|
|
struct ib_mad_agent;
|
|
struct ib_mad_send_wc;
|
|
struct ib_mad_recv_wc;
|
|
|
|
/**
|
|
* ib_mad_send_handler - callback handler for a sent MAD.
|
|
* @mad_agent: MAD agent that sent the MAD.
|
|
* @mad_send_wc: Send work completion information on the sent MAD.
|
|
*/
|
|
typedef void (*ib_mad_send_handler)(struct ib_mad_agent *mad_agent,
|
|
struct ib_mad_send_wc *mad_send_wc);
|
|
|
|
/**
|
|
* ib_mad_recv_handler - callback handler for a received MAD.
|
|
* @mad_agent: MAD agent requesting the received MAD.
|
|
* @send_buf: Send buffer if found, else NULL
|
|
* @mad_recv_wc: Received work completion information on the received MAD.
|
|
*
|
|
* MADs received in response to a send request operation will be handed to
|
|
* the user before the send operation completes. All data buffers given
|
|
* to registered agents through this routine are owned by the receiving
|
|
* client.
|
|
*/
|
|
typedef void (*ib_mad_recv_handler)(struct ib_mad_agent *mad_agent,
|
|
struct ib_mad_send_buf *send_buf,
|
|
struct ib_mad_recv_wc *mad_recv_wc);
|
|
|
|
/**
|
|
* ib_mad_agent - Used to track MAD registration with the access layer.
|
|
* @device: Reference to device registration is on.
|
|
* @qp: Reference to QP used for sending and receiving MADs.
|
|
* @mr: Memory region for system memory usable for DMA.
|
|
* @recv_handler: Callback handler for a received MAD.
|
|
* @send_handler: Callback handler for a sent MAD.
|
|
* @context: User-specified context associated with this registration.
|
|
* @hi_tid: Access layer assigned transaction ID for this client.
|
|
* Unsolicited MADs sent by this client will have the upper 32-bits
|
|
* of their TID set to this value.
|
|
* @flags: registration flags
|
|
* @port_num: Port number on which QP is registered
|
|
* @rmpp_version: If set, indicates the RMPP version used by this agent.
|
|
*/
|
|
enum {
|
|
IB_MAD_USER_RMPP = IB_USER_MAD_USER_RMPP,
|
|
};
|
|
struct ib_mad_agent {
|
|
struct ib_device *device;
|
|
struct ib_qp *qp;
|
|
ib_mad_recv_handler recv_handler;
|
|
ib_mad_send_handler send_handler;
|
|
void *context;
|
|
u32 hi_tid;
|
|
u32 flags;
|
|
void *security;
|
|
struct list_head mad_agent_sec_list;
|
|
u8 port_num;
|
|
u8 rmpp_version;
|
|
bool smp_allowed;
|
|
};
|
|
|
|
/**
|
|
* ib_mad_send_wc - MAD send completion information.
|
|
* @send_buf: Send MAD data buffer associated with the send MAD request.
|
|
* @status: Completion status.
|
|
* @vendor_err: Optional vendor error information returned with a failed
|
|
* request.
|
|
*/
|
|
struct ib_mad_send_wc {
|
|
struct ib_mad_send_buf *send_buf;
|
|
enum ib_wc_status status;
|
|
u32 vendor_err;
|
|
};
|
|
|
|
/**
|
|
* ib_mad_recv_buf - received MAD buffer information.
|
|
* @list: Reference to next data buffer for a received RMPP MAD.
|
|
* @grh: References a data buffer containing the global route header.
|
|
* The data refereced by this buffer is only valid if the GRH is
|
|
* valid.
|
|
* @mad: References the start of the received MAD.
|
|
*/
|
|
struct ib_mad_recv_buf {
|
|
struct list_head list;
|
|
struct ib_grh *grh;
|
|
union {
|
|
struct ib_mad *mad;
|
|
struct opa_mad *opa_mad;
|
|
};
|
|
};
|
|
|
|
/**
|
|
* ib_mad_recv_wc - received MAD information.
|
|
* @wc: Completion information for the received data.
|
|
* @recv_buf: Specifies the location of the received data buffer(s).
|
|
* @rmpp_list: Specifies a list of RMPP reassembled received MAD buffers.
|
|
* @mad_len: The length of the received MAD, without duplicated headers.
|
|
* @mad_seg_size: The size of individual MAD segments
|
|
*
|
|
* For received response, the wr_id contains a pointer to the ib_mad_send_buf
|
|
* for the corresponding send request.
|
|
*/
|
|
struct ib_mad_recv_wc {
|
|
struct ib_wc *wc;
|
|
struct ib_mad_recv_buf recv_buf;
|
|
struct list_head rmpp_list;
|
|
int mad_len;
|
|
size_t mad_seg_size;
|
|
};
|
|
|
|
/**
|
|
* ib_mad_reg_req - MAD registration request
|
|
* @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 0x30 to 0x4f. Otherwise not used.
|
|
* @method_mask: The caller will receive unsolicited MADs for any method
|
|
* where @method_mask = 1.
|
|
*
|
|
*/
|
|
struct ib_mad_reg_req {
|
|
u8 mgmt_class;
|
|
u8 mgmt_class_version;
|
|
u8 oui[3];
|
|
DECLARE_BITMAP(method_mask, IB_MGMT_MAX_METHODS);
|
|
};
|
|
|
|
/**
|
|
* ib_register_mad_agent - Register to send/receive MADs.
|
|
* @device: The device to register with.
|
|
* @port_num: The port on the specified device to use.
|
|
* @qp_type: Specifies which QP to access. Must be either
|
|
* IB_QPT_SMI or IB_QPT_GSI.
|
|
* @mad_reg_req: Specifies which unsolicited MADs should be received
|
|
* by the caller. This parameter may be NULL if the caller only
|
|
* wishes to receive solicited responses.
|
|
* @rmpp_version: If set, indicates that the client will send
|
|
* and receive MADs that contain the RMPP header for the given version.
|
|
* If set to 0, indicates that RMPP is not used by this client.
|
|
* @send_handler: The completion callback routine invoked after a send
|
|
* request has completed.
|
|
* @recv_handler: The completion callback routine invoked for a received
|
|
* MAD.
|
|
* @context: User specified context associated with the registration.
|
|
* @registration_flags: Registration flags to set for this agent
|
|
*/
|
|
struct ib_mad_agent *ib_register_mad_agent(struct ib_device *device,
|
|
u32 port_num,
|
|
enum ib_qp_type qp_type,
|
|
struct ib_mad_reg_req *mad_reg_req,
|
|
u8 rmpp_version,
|
|
ib_mad_send_handler send_handler,
|
|
ib_mad_recv_handler recv_handler,
|
|
void *context,
|
|
u32 registration_flags);
|
|
/**
|
|
* ib_unregister_mad_agent - Unregisters a client from using MAD services.
|
|
* @mad_agent: Corresponding MAD registration request to deregister.
|
|
*
|
|
* After invoking this routine, MAD services are no longer usable by the
|
|
* client on the associated QP.
|
|
*/
|
|
void ib_unregister_mad_agent(struct ib_mad_agent *mad_agent);
|
|
|
|
/**
|
|
* ib_post_send_mad - Posts MAD(s) to the send queue of the QP associated
|
|
* with the registered client.
|
|
* @send_buf: Specifies the information needed to send the MAD(s).
|
|
* @bad_send_buf: Specifies the MAD on which an error was encountered. This
|
|
* parameter is optional if only a single MAD is posted.
|
|
*
|
|
* Sent MADs are not guaranteed to complete in the order that they were posted.
|
|
*
|
|
* If the MAD requires RMPP, the data buffer should contain a single copy
|
|
* of the common MAD, RMPP, and class specific headers, followed by the class
|
|
* defined data. If the class defined data would not divide evenly into
|
|
* RMPP segments, then space must be allocated at the end of the referenced
|
|
* buffer for any required padding. To indicate the amount of class defined
|
|
* data being transferred, the paylen_newwin field in the RMPP header should
|
|
* be set to the size of the class specific header plus the amount of class
|
|
* defined data being transferred. The paylen_newwin field should be
|
|
* specified in network-byte order.
|
|
*/
|
|
int ib_post_send_mad(struct ib_mad_send_buf *send_buf,
|
|
struct ib_mad_send_buf **bad_send_buf);
|
|
|
|
|
|
/**
|
|
* ib_free_recv_mad - Returns data buffers used to receive a MAD.
|
|
* @mad_recv_wc: Work completion information for a received MAD.
|
|
*
|
|
* Clients receiving MADs through their ib_mad_recv_handler must call this
|
|
* routine to return the work completion buffers to the access layer.
|
|
*/
|
|
void ib_free_recv_mad(struct ib_mad_recv_wc *mad_recv_wc);
|
|
|
|
/**
|
|
* ib_modify_mad - Modifies an outstanding send MAD operation.
|
|
* @send_buf: Indicates the MAD to modify.
|
|
* @timeout_ms: New timeout value for sent MAD.
|
|
*
|
|
* This call will reset the timeout value for a sent MAD to the specified
|
|
* value.
|
|
*/
|
|
int ib_modify_mad(struct ib_mad_send_buf *send_buf, u32 timeout_ms);
|
|
|
|
/**
|
|
* ib_cancel_mad - Cancels an outstanding send MAD operation.
|
|
* @send_buf: Indicates the MAD to cancel.
|
|
*
|
|
* MADs will be returned to the user through the corresponding
|
|
* ib_mad_send_handler.
|
|
*/
|
|
static inline void ib_cancel_mad(struct ib_mad_send_buf *send_buf)
|
|
{
|
|
ib_modify_mad(send_buf, 0);
|
|
}
|
|
|
|
/**
|
|
* ib_create_send_mad - Allocate and initialize a data buffer and work request
|
|
* for sending a MAD.
|
|
* @mad_agent: Specifies the registered MAD service to associate with the MAD.
|
|
* @remote_qpn: Specifies the QPN of the receiving node.
|
|
* @pkey_index: Specifies which PKey the MAD will be sent using. This field
|
|
* is valid only if the remote_qpn is QP 1.
|
|
* @rmpp_active: Indicates if the send will enable RMPP.
|
|
* @hdr_len: Indicates the size of the data header of the MAD. This length
|
|
* should include the common MAD header, RMPP header, plus any class
|
|
* specific header.
|
|
* @data_len: Indicates the size of any user-transferred data. The call will
|
|
* automatically adjust the allocated buffer size to account for any
|
|
* additional padding that may be necessary.
|
|
* @gfp_mask: GFP mask used for the memory allocation.
|
|
* @base_version: Base Version of this MAD
|
|
*
|
|
* This routine allocates a MAD for sending. The returned MAD send buffer
|
|
* will reference a data buffer usable for sending a MAD, along
|
|
* with an initialized work request structure. Users may modify the returned
|
|
* MAD data buffer before posting the send.
|
|
*
|
|
* The returned MAD header, class specific headers, and any padding will be
|
|
* cleared. Users are responsible for initializing the common MAD header,
|
|
* any class specific header, and MAD data area.
|
|
* If @rmpp_active is set, the RMPP header will be initialized for sending.
|
|
*/
|
|
struct ib_mad_send_buf *ib_create_send_mad(struct ib_mad_agent *mad_agent,
|
|
u32 remote_qpn, u16 pkey_index,
|
|
int rmpp_active,
|
|
int hdr_len, int data_len,
|
|
gfp_t gfp_mask,
|
|
u8 base_version);
|
|
|
|
/**
|
|
* ib_is_mad_class_rmpp - returns whether given management class
|
|
* supports RMPP.
|
|
* @mgmt_class: management class
|
|
*
|
|
* This routine returns whether the management class supports RMPP.
|
|
*/
|
|
int ib_is_mad_class_rmpp(u8 mgmt_class);
|
|
|
|
/**
|
|
* ib_get_mad_data_offset - returns the data offset for a given
|
|
* management class.
|
|
* @mgmt_class: management class
|
|
*
|
|
* This routine returns the data offset in the MAD for the management
|
|
* class requested.
|
|
*/
|
|
int ib_get_mad_data_offset(u8 mgmt_class);
|
|
|
|
/**
|
|
* ib_get_rmpp_segment - returns the data buffer for a given RMPP segment.
|
|
* @send_buf: Previously allocated send data buffer.
|
|
* @seg_num: number of segment to return
|
|
*
|
|
* This routine returns a pointer to the data buffer of an RMPP MAD.
|
|
* Users must provide synchronization to @send_buf around this call.
|
|
*/
|
|
void *ib_get_rmpp_segment(struct ib_mad_send_buf *send_buf, int seg_num);
|
|
|
|
/**
|
|
* ib_free_send_mad - Returns data buffers used to send a MAD.
|
|
* @send_buf: Previously allocated send data buffer.
|
|
*/
|
|
void ib_free_send_mad(struct ib_mad_send_buf *send_buf);
|
|
|
|
/**
|
|
* ib_mad_kernel_rmpp_agent - Returns if the agent is performing RMPP.
|
|
* @agent: the agent in question
|
|
* @return: true if agent is performing rmpp, false otherwise.
|
|
*/
|
|
int ib_mad_kernel_rmpp_agent(const struct ib_mad_agent *agent);
|
|
|
|
#endif /* IB_MAD_H */
|