/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
/*
* Copyright ( c ) 2004 Mellanox Technologies Ltd . All rights reserved .
* Copyright ( c ) 2004 Infinicon Corporation . All rights reserved .
* Copyright ( c ) 2004 Intel Corporation . All rights reserved .
* Copyright ( c ) 2004 Topspin Corporation . All rights reserved .
* Copyright ( c ) 2004 - 2006 Voltaire Corporation . All rights reserved .
*/
#ifndef IB_MAD_H
#define IB_MAD_H
#include <linux/list.h>
#include <rdma/ib_verbs.h>
#include <uapi/rdma/ib_user_mad.h>
/* Management base versions */
#define IB_MGMT_BASE_VERSION 1
#define OPA_MGMT_BASE_VERSION 0 x80
#define OPA_SM_CLASS_VERSION 0 x80
/* Management classes */
#define IB_MGMT_CLASS_SUBN_LID_ROUTED 0 x01
#define IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE 0 x81
#define IB_MGMT_CLASS_SUBN_ADM 0 x03
#define IB_MGMT_CLASS_PERF_MGMT 0 x04
#define IB_MGMT_CLASS_BM 0 x05
#define IB_MGMT_CLASS_DEVICE_MGMT 0 x06
#define IB_MGMT_CLASS_CM 0 x07
#define IB_MGMT_CLASS_SNMP 0 x08
#define IB_MGMT_CLASS_DEVICE_ADM 0 x10
#define IB_MGMT_CLASS_BOOT_MGMT 0 x11
#define IB_MGMT_CLASS_BIS 0 x12
#define IB_MGMT_CLASS_CONG_MGMT 0 x21
#define IB_MGMT_CLASS_VENDOR_RANGE2_START 0 x30
#define IB_MGMT_CLASS_VENDOR_RANGE2_END 0 x4F
#define IB_OPENIB_OUI (0 x001405)
/* Management methods */
#define IB_MGMT_METHOD_GET 0 x01
#define IB_MGMT_METHOD_SET 0 x02
#define IB_MGMT_METHOD_GET_RESP 0 x81
#define IB_MGMT_METHOD_SEND 0 x03
#define IB_MGMT_METHOD_TRAP 0 x05
#define IB_MGMT_METHOD_REPORT 0 x06
#define IB_MGMT_METHOD_REPORT_RESP 0 x86
#define IB_MGMT_METHOD_TRAP_REPRESS 0 x07
#define IB_MGMT_METHOD_RESP 0 x80
#define IB_BM_ATTR_MOD_RESP cpu_to_be32(1 )
#define IB_MGMT_MAX_METHODS 128
/* MAD Status field bit masks */
#define IB_MGMT_MAD_STATUS_SUCCESS 0 x0000
#define IB_MGMT_MAD_STATUS_BUSY 0 x0001
#define IB_MGMT_MAD_STATUS_REDIRECT_REQD 0 x0002
#define IB_MGMT_MAD_STATUS_BAD_VERSION 0 x0004
#define IB_MGMT_MAD_STATUS_UNSUPPORTED_METHOD 0 x0008
#define IB_MGMT_MAD_STATUS_UNSUPPORTED_METHOD_ATTRIB 0 x000c
#define IB_MGMT_MAD_STATUS_INVALID_ATTRIB_VALUE 0 x001c
/* RMPP information */
#define IB_MGMT_RMPP_VERSION 1
#define IB_MGMT_RMPP_TYPE_DATA 1
#define IB_MGMT_RMPP_TYPE_ACK 2
#define IB_MGMT_RMPP_TYPE_STOP 3
#define IB_MGMT_RMPP_TYPE_ABORT 4
#define IB_MGMT_RMPP_FLAG_ACTIVE 1
#define IB_MGMT_RMPP_FLAG_FIRST (1 <<1 )
#define IB_MGMT_RMPP_FLAG_LAST (1 <<2 )
#define IB_MGMT_RMPP_NO_RESPTIME 0 x1F
#define IB_MGMT_RMPP_STATUS_SUCCESS 0
#define IB_MGMT_RMPP_STATUS_RESX 1
#define IB_MGMT_RMPP_STATUS_ABORT_MIN 118
#define IB_MGMT_RMPP_STATUS_T2L 118
#define IB_MGMT_RMPP_STATUS_BAD_LEN 119
#define IB_MGMT_RMPP_STATUS_BAD_SEG 120
#define IB_MGMT_RMPP_STATUS_BADT 121
#define IB_MGMT_RMPP_STATUS_W2S 122
#define IB_MGMT_RMPP_STATUS_S2B 123
#define IB_MGMT_RMPP_STATUS_BAD_STATUS 124
#define IB_MGMT_RMPP_STATUS_UNV 125
#define IB_MGMT_RMPP_STATUS_TMR 126
#define IB_MGMT_RMPP_STATUS_UNSPEC 127
#define IB_MGMT_RMPP_STATUS_ABORT_MAX 127
#define IB_QP0 0
#define IB_QP1 cpu_to_be32(1 )
#define IB_QP1_QKEY 0 x80010000
#define IB_QP_SET_QKEY 0 x80000000
#define IB_DEFAULT_PKEY_PARTIAL 0 x7FFF
#define IB_DEFAULT_PKEY_FULL 0 xFFFF
/*
* Generic trap / notice types
*/
#define IB_NOTICE_TYPE_FATAL 0 x80
#define IB_NOTICE_TYPE_URGENT 0 x81
#define IB_NOTICE_TYPE_SECURITY 0 x82
#define IB_NOTICE_TYPE_SM 0 x83
#define IB_NOTICE_TYPE_INFO 0 x84
/*
* Generic trap / notice producers
*/
#define IB_NOTICE_PROD_CA cpu_to_be16(1 )
#define IB_NOTICE_PROD_SWITCH cpu_to_be16(2 )
#define IB_NOTICE_PROD_ROUTER cpu_to_be16(3 )
#define IB_NOTICE_PROD_CLASS_MGR cpu_to_be16(4 )
enum {
IB_MGMT_MAD_HDR = 24 ,
IB_MGMT_MAD_DATA = 232 ,
IB_MGMT_RMPP_HDR = 36 ,
IB_MGMT_RMPP_DATA = 220 ,
IB_MGMT_VENDOR_HDR = 40 ,
IB_MGMT_VENDOR_DATA = 216 ,
IB_MGMT_SA_HDR = 56 ,
IB_MGMT_SA_DATA = 200 ,
IB_MGMT_DEVICE_HDR = 64 ,
IB_MGMT_DEVICE_DATA = 192 ,
IB_MGMT_MAD_SIZE = IB_MGMT_MAD_HDR + IB_MGMT_MAD_DATA,
OPA_MGMT_MAD_DATA = 2024 ,
OPA_MGMT_RMPP_DATA = 2012 ,
OPA_MGMT_MAD_SIZE = IB_MGMT_MAD_HDR + OPA_MGMT_MAD_DATA,
};
struct ib_mad_hdr {
u8 base_version;
u8 mgmt_class;
u8 class_version;
u8 method;
__be16 status;
__be16 class_specific;
__be64 tid;
__be16 attr_id;
__be16 resv;
__be32 attr_mod;
};
struct ib_rmpp_hdr {
u8 rmpp_version;
u8 rmpp_type;
u8 rmpp_rtime_flags;
u8 rmpp_status;
__be32 seg_num;
__be32 paylen_newwin;
};
typedef u64 __bitwise ib_sa_comp_mask;
#define IB_SA_COMP_MASK(n) ((__force ib_sa_comp_mask) cpu_to_be64(1 ull << (n)))
/*
* ib_sa_hdr and ib_sa_mad structures must be packed because they have
* 64 - bit fields that are only 32 - bit aligned . 64 - bit architectures will
* lay them out wrong otherwise . ( And unfortunately they are sent on
* the wire so we can ' t change the layout )
*/
struct ib_sa_hdr {
__be64 sm_key;
__be16 attr_offset;
__be16 reserved;
ib_sa_comp_mask comp_mask;
} __packed;
struct ib_mad {
struct ib_mad_hdr mad_hdr;
u8 data[IB_MGMT_MAD_DATA];
};
struct opa_mad {
struct ib_mad_hdr mad_hdr;
u8 data[OPA_MGMT_MAD_DATA];
};
struct ib_rmpp_mad {
struct ib_mad_hdr mad_hdr;
struct ib_rmpp_hdr rmpp_hdr;
u8 data[IB_MGMT_RMPP_DATA];
};
struct opa_rmpp_mad {
struct ib_mad_hdr mad_hdr;
struct ib_rmpp_hdr rmpp_hdr;
u8 data[OPA_MGMT_RMPP_DATA];
};
struct ib_sa_mad {
struct ib_mad_hdr mad_hdr;
struct ib_rmpp_hdr rmpp_hdr;
struct ib_sa_hdr sa_hdr;
u8 data[IB_MGMT_SA_DATA];
} __packed;
struct ib_vendor_mad {
struct ib_mad_hdr mad_hdr;
struct ib_rmpp_hdr rmpp_hdr;
u8 reserved;
u8 oui[3 ];
u8 data[IB_MGMT_VENDOR_DATA];
};
#define IB_MGMT_CLASSPORTINFO_ATTR_ID cpu_to_be16(0 x0001)
#define IB_CLASS_PORT_INFO_RESP_TIME_MASK 0 x1F
#define IB_CLASS_PORT_INFO_RESP_TIME_FIELD_SIZE 5
struct ib_class_port_info {
u8 base_version;
u8 class_version;
__be16 capability_mask;
/* 27 bits for cap_mask2, 5 bits for resp_time */
__be32 cap_mask2_resp_time;
u8 redirect_gid[16 ];
__be32 redirect_tcslfl;
__be16 redirect_lid;
__be16 redirect_pkey;
__be32 redirect_qp;
__be32 redirect_qkey;
u8 trap_gid[16 ];
__be32 trap_tcslfl;
__be16 trap_lid;
__be16 trap_pkey;
__be32 trap_hlqp;
__be32 trap_qkey;
};
/* PortInfo CapabilityMask */
enum ib_port_capability_mask_bits {
IB_PORT_SM = 1 << 1 ,
IB_PORT_NOTICE_SUP = 1 << 2 ,
IB_PORT_TRAP_SUP = 1 << 3 ,
IB_PORT_OPT_IPD_SUP = 1 << 4 ,
IB_PORT_AUTO_MIGR_SUP = 1 << 5 ,
IB_PORT_SL_MAP_SUP = 1 << 6 ,
IB_PORT_MKEY_NVRAM = 1 << 7 ,
IB_PORT_PKEY_NVRAM = 1 << 8 ,
IB_PORT_LED_INFO_SUP = 1 << 9 ,
IB_PORT_SM_DISABLED = 1 << 10 ,
IB_PORT_SYS_IMAGE_GUID_SUP = 1 << 11 ,
IB_PORT_PKEY_SW_EXT_PORT_TRAP_SUP = 1 << 12 ,
IB_PORT_EXTENDED_SPEEDS_SUP = 1 << 14 ,
IB_PORT_CAP_MASK2_SUP = 1 << 15 ,
IB_PORT_CM_SUP = 1 << 16 ,
IB_PORT_SNMP_TUNNEL_SUP = 1 << 17 ,
IB_PORT_REINIT_SUP = 1 << 18 ,
IB_PORT_DEVICE_MGMT_SUP = 1 << 19 ,
IB_PORT_VENDOR_CLASS_SUP = 1 << 20 ,
IB_PORT_DR_NOTICE_SUP = 1 << 21 ,
IB_PORT_CAP_MASK_NOTICE_SUP = 1 << 22 ,
IB_PORT_BOOT_MGMT_SUP = 1 << 23 ,
IB_PORT_LINK_LATENCY_SUP = 1 << 24 ,
IB_PORT_CLIENT_REG_SUP = 1 << 25 ,
IB_PORT_OTHER_LOCAL_CHANGES_SUP = 1 << 26 ,
IB_PORT_LINK_SPEED_WIDTH_TABLE_SUP = 1 << 27 ,
IB_PORT_VENDOR_SPECIFIC_MADS_TABLE_SUP = 1 << 28 ,
IB_PORT_MCAST_PKEY_TRAP_SUPPRESSION_SUP = 1 << 29 ,
IB_PORT_MCAST_FDB_TOP_SUP = 1 << 30 ,
IB_PORT_HIERARCHY_INFO_SUP = 1 ULL << 31 ,
};
enum ib_port_capability_mask2_bits {
IB_PORT_SET_NODE_DESC_SUP = 1 << 0 ,
IB_PORT_EX_PORT_INFO_EX_SUP = 1 << 1 ,
IB_PORT_VIRT_SUP = 1 << 2 ,
IB_PORT_SWITCH_PORT_STATE_TABLE_SUP = 1 << 3 ,
IB_PORT_LINK_WIDTH_2X_SUP = 1 << 4 ,
IB_PORT_LINK_SPEED_HDR_SUP = 1 << 5 ,
IB_PORT_LINK_SPEED_NDR_SUP = 1 << 10 ,
IB_PORT_EXTENDED_SPEEDS2_SUP = 1 << 11 ,
IB_PORT_LINK_SPEED_XDR_SUP = 1 << 12 ,
};
#define OPA_CLASS_PORT_INFO_PR_SUPPORT BIT(26 )
struct opa_class_port_info {
u8 base_version;
u8 class_version;
__be16 cap_mask;
__be32 cap_mask2_resp_time;
u8 redirect_gid[16 ];
__be32 redirect_tc_fl;
__be32 redirect_lid;
__be32 redirect_sl_qp;
__be32 redirect_qkey;
u8 trap_gid[16 ];
__be32 trap_tc_fl;
__be32 trap_lid;
__be32 trap_hl_qp;
__be32 trap_qkey;
__be16 trap_pkey;
__be16 redirect_pkey;
u8 trap_sl_rsvd;
u8 reserved[3 ];
} __packed;
/**
* ib_get_cpi_resp_time - Returns the resp_time value from
* cap_mask2_resp_time in ib_class_port_info .
* @ cpi : A struct ib_class_port_info mad .
*/
static inline u8 ib_get_cpi_resp_time(struct ib_class_port_info *cpi)
{
return (u8)(be32_to_cpu(cpi->cap_mask2_resp_time) &
IB_CLASS_PORT_INFO_RESP_TIME_MASK);
}
/**
* ib_set_cpi_resptime - Sets the response time in an
* ib_class_port_info mad .
* @ cpi : A struct ib_class_port_info .
* @ rtime : The response time to set .
*/
static inline void ib_set_cpi_resp_time(struct ib_class_port_info *cpi,
u8 rtime)
{
cpi->cap_mask2_resp_time =
(cpi->cap_mask2_resp_time &
cpu_to_be32(~IB_CLASS_PORT_INFO_RESP_TIME_MASK)) |
cpu_to_be32(rtime & IB_CLASS_PORT_INFO_RESP_TIME_MASK);
}
/**
* ib_get_cpi_capmask2 - Returns the capmask2 value from
* cap_mask2_resp_time in ib_class_port_info .
* @ cpi : A struct ib_class_port_info mad .
*/
static inline u32 ib_get_cpi_capmask2(struct ib_class_port_info *cpi)
{
return (be32_to_cpu(cpi->cap_mask2_resp_time) >>
IB_CLASS_PORT_INFO_RESP_TIME_FIELD_SIZE);
}
/**
* ib_set_cpi_capmask2 - Sets the capmask2 in an
* ib_class_port_info mad .
* @ cpi : A struct ib_class_port_info .
* @ capmask2 : The capmask2 to set .
*/
static inline void ib_set_cpi_capmask2(struct ib_class_port_info *cpi,
u32 capmask2)
{
cpi->cap_mask2_resp_time =
(cpi->cap_mask2_resp_time &
cpu_to_be32(IB_CLASS_PORT_INFO_RESP_TIME_MASK)) |
cpu_to_be32(capmask2 <<
IB_CLASS_PORT_INFO_RESP_TIME_FIELD_SIZE);
}
/**
* opa_get_cpi_capmask2 - Returns the capmask2 value from
* cap_mask2_resp_time in ib_class_port_info .
* @ cpi : A struct opa_class_port_info mad .
*/
static inline u32 opa_get_cpi_capmask2(struct opa_class_port_info *cpi)
{
return (be32_to_cpu(cpi->cap_mask2_resp_time) >>
IB_CLASS_PORT_INFO_RESP_TIME_FIELD_SIZE);
}
struct ib_mad_notice_attr {
u8 generic_type;
u8 prod_type_msb;
__be16 prod_type_lsb;
__be16 trap_num;
__be16 issuer_lid;
__be16 toggle_count;
union {
struct {
u8 details[54 ];
} raw_data;
struct {
__be16 reserved;
__be16 lid; /* where violation happened */
u8 port_num; /* where violation happened */
} __packed ntc_129_131;
struct {
__be16 reserved;
__be16 lid; /* LID where change occurred */
u8 reserved2;
u8 local_changes; /* low bit - local changes */
__be32 new_cap_mask; /* new capability mask */
u8 reserved3;
u8 change_flags; /* low 3 bits only */
} __packed ntc_144;
struct {
__be16 reserved;
__be16 lid; /* lid where sys guid changed */
__be16 reserved2;
__be64 new_sys_guid;
} __packed ntc_145;
struct {
__be16 reserved;
__be16 lid;
__be16 dr_slid;
u8 method;
u8 reserved2;
__be16 attr_id;
__be32 attr_mod;
__be64 mkey;
u8 reserved3;
u8 dr_trunc_hop;
u8 dr_rtn_path[30 ];
} __packed ntc_256;
struct {
__be16 reserved;
__be16 lid1;
__be16 lid2;
__be32 key;
__be32 sl_qp1; /* SL: high 4 bits */
__be32 qp2; /* high 8 bits reserved */
union ib_gid gid1;
union ib_gid gid2;
} __packed ntc_257_258;
} details;
};
/**
* ib_mad_send_buf - MAD data buffer and work request for sends .
* @ next : A pointer used to chain together MADs for posting .
* @ mad : References an allocated MAD data buffer for MADs that do not have
* RMPP active . For MADs using RMPP , references the common and management
* class specific headers .
* @ mad_agent : MAD agent that allocated the buffer .
* @ ah : The address handle to use when sending the MAD .
* @ context : User - controlled context fields .
* @ hdr_len : Indicates the size of the data header of the MAD . This length
* includes the common MAD , RMPP , and class specific headers .
* @ data_len : Indicates the total size of user - transferred data .
* @ seg_count : The number of RMPP segments allocated for this send .
* @ seg_size : Size of the data in each RMPP segment . This does not include
* class specific headers .
* @ seg_rmpp_size : Size of each RMPP segment including the class specific
* headers .
* @ timeout_ms : Time to wait for a response .
* @ retries : Number of times to retry a request for a response . For MADs
* using RMPP , this applies per window . On completion , returns the number
* 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 & 0 x7;
}
/**
* 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 & 0 xF8) |
(flags & 0 x7);
}
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 0 x30 to 0 x4f . 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 */
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