Quelle ib_cm.h
Sprache: C
/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
/*
* Copyright ( c ) 2004 , 2005 Intel Corporation . All rights reserved .
* Copyright ( c ) 2004 Topspin Corporation . All rights reserved .
* Copyright ( c ) 2004 Voltaire Corporation . All rights reserved .
* Copyright ( c ) 2005 Sun Microsystems , Inc . All rights reserved .
* Copyright ( c ) 2019 , Mellanox Technologies inc . All rights reserved .
*/
#ifndef IB_CM_H
#define IB_CM_H
#include <rdma/ib_mad.h>
#include <rdma/ib_sa.h>
#include <rdma/rdma_cm.h>
enum ib_cm_state {
IB_CM_IDLE,
IB_CM_LISTEN,
IB_CM_REQ_SENT,
IB_CM_REQ_RCVD,
IB_CM_MRA_REQ_SENT,
IB_CM_MRA_REQ_RCVD,
IB_CM_REP_SENT,
IB_CM_REP_RCVD,
IB_CM_MRA_REP_SENT,
IB_CM_MRA_REP_RCVD,
IB_CM_ESTABLISHED,
IB_CM_DREQ_SENT,
IB_CM_DREQ_RCVD,
IB_CM_TIMEWAIT,
IB_CM_SIDR_REQ_SENT,
IB_CM_SIDR_REQ_RCVD
};
enum ib_cm_lap_state {
IB_CM_LAP_UNINIT,
IB_CM_LAP_IDLE,
IB_CM_LAP_SENT,
IB_CM_LAP_RCVD,
IB_CM_MRA_LAP_SENT,
IB_CM_MRA_LAP_RCVD,
};
enum ib_cm_event_type {
IB_CM_REQ_ERROR,
IB_CM_REQ_RECEIVED,
IB_CM_REP_ERROR,
IB_CM_REP_RECEIVED,
IB_CM_RTU_RECEIVED,
IB_CM_USER_ESTABLISHED,
IB_CM_DREQ_ERROR,
IB_CM_DREQ_RECEIVED,
IB_CM_DREP_RECEIVED,
IB_CM_TIMEWAIT_EXIT,
IB_CM_MRA_RECEIVED,
IB_CM_REJ_RECEIVED,
IB_CM_LAP_ERROR,
IB_CM_LAP_RECEIVED,
IB_CM_APR_RECEIVED,
IB_CM_SIDR_REQ_ERROR,
IB_CM_SIDR_REQ_RECEIVED,
IB_CM_SIDR_REP_RECEIVED
};
enum ib_cm_data_size {
IB_CM_REQ_PRIVATE_DATA_SIZE = 92 ,
IB_CM_MRA_PRIVATE_DATA_SIZE = 222 ,
IB_CM_REJ_PRIVATE_DATA_SIZE = 148 ,
IB_CM_REP_PRIVATE_DATA_SIZE = 196 ,
IB_CM_RTU_PRIVATE_DATA_SIZE = 224 ,
IB_CM_DREQ_PRIVATE_DATA_SIZE = 220 ,
IB_CM_DREP_PRIVATE_DATA_SIZE = 224 ,
IB_CM_REJ_ARI_LENGTH = 72 ,
IB_CM_LAP_PRIVATE_DATA_SIZE = 168 ,
IB_CM_APR_PRIVATE_DATA_SIZE = 148 ,
IB_CM_APR_INFO_LENGTH = 72 ,
IB_CM_SIDR_REQ_PRIVATE_DATA_SIZE = 216 ,
IB_CM_SIDR_REP_PRIVATE_DATA_SIZE = 136 ,
IB_CM_SIDR_REP_INFO_LENGTH = 72 ,
};
struct ib_cm_id;
struct ib_cm_req_event_param {
struct ib_cm_id *listen_id;
/* P_Key that was used by the GMP's BTH header */
u16 bth_pkey;
u8 port;
struct sa_path_rec *primary_path;
struct sa_path_rec *alternate_path;
/*
* SGID attribute of the primary path . Currently only
* useful for RoCE . Alternate path GID attributes
* are not yet supported .
*/
const struct ib_gid_attr *ppath_sgid_attr;
__be64 remote_ca_guid;
u32 remote_qkey;
u32 remote_qpn;
enum ib_qp_type qp_type;
u32 starting_psn;
u8 responder_resources;
u8 initiator_depth;
unsigned int local_cm_response_timeout:5 ;
unsigned int flow_control:1 ;
unsigned int remote_cm_response_timeout:5 ;
unsigned int retry_count:3 ;
unsigned int rnr_retry_count:3 ;
unsigned int srq:1 ;
struct rdma_ucm_ece ece;
};
struct ib_cm_rep_event_param {
__be64 remote_ca_guid;
u32 remote_qkey;
u32 remote_qpn;
u32 starting_psn;
u8 responder_resources;
u8 initiator_depth;
unsigned int target_ack_delay:5 ;
unsigned int failover_accepted:2 ;
unsigned int flow_control:1 ;
unsigned int rnr_retry_count:3 ;
unsigned int srq:1 ;
struct rdma_ucm_ece ece;
};
enum ib_cm_rej_reason {
IB_CM_REJ_NO_QP = 1 ,
IB_CM_REJ_NO_EEC = 2 ,
IB_CM_REJ_NO_RESOURCES = 3 ,
IB_CM_REJ_TIMEOUT = 4 ,
IB_CM_REJ_UNSUPPORTED = 5 ,
IB_CM_REJ_INVALID_COMM_ID = 6 ,
IB_CM_REJ_INVALID_COMM_INSTANCE = 7 ,
IB_CM_REJ_INVALID_SERVICE_ID = 8 ,
IB_CM_REJ_INVALID_TRANSPORT_TYPE = 9 ,
IB_CM_REJ_STALE_CONN = 10 ,
IB_CM_REJ_RDC_NOT_EXIST = 11 ,
IB_CM_REJ_INVALID_GID = 12 ,
IB_CM_REJ_INVALID_LID = 13 ,
IB_CM_REJ_INVALID_SL = 14 ,
IB_CM_REJ_INVALID_TRAFFIC_CLASS = 15 ,
IB_CM_REJ_INVALID_HOP_LIMIT = 16 ,
IB_CM_REJ_INVALID_PACKET_RATE = 17 ,
IB_CM_REJ_INVALID_ALT_GID = 18 ,
IB_CM_REJ_INVALID_ALT_LID = 19 ,
IB_CM_REJ_INVALID_ALT_SL = 20 ,
IB_CM_REJ_INVALID_ALT_TRAFFIC_CLASS = 21 ,
IB_CM_REJ_INVALID_ALT_HOP_LIMIT = 22 ,
IB_CM_REJ_INVALID_ALT_PACKET_RATE = 23 ,
IB_CM_REJ_PORT_CM_REDIRECT = 24 ,
IB_CM_REJ_PORT_REDIRECT = 25 ,
IB_CM_REJ_INVALID_MTU = 26 ,
IB_CM_REJ_INSUFFICIENT_RESP_RESOURCES = 27 ,
IB_CM_REJ_CONSUMER_DEFINED = 28 ,
IB_CM_REJ_INVALID_RNR_RETRY = 29 ,
IB_CM_REJ_DUPLICATE_LOCAL_COMM_ID = 30 ,
IB_CM_REJ_INVALID_CLASS_VERSION = 31 ,
IB_CM_REJ_INVALID_FLOW_LABEL = 32 ,
IB_CM_REJ_INVALID_ALT_FLOW_LABEL = 33 ,
IB_CM_REJ_VENDOR_OPTION_NOT_SUPPORTED = 35 ,
};
struct ib_cm_rej_event_param {
enum ib_cm_rej_reason reason;
void *ari;
u8 ari_length;
};
struct ib_cm_mra_event_param {
u8 service_timeout;
};
struct ib_cm_lap_event_param {
struct sa_path_rec *alternate_path;
};
enum ib_cm_apr_status {
IB_CM_APR_SUCCESS,
IB_CM_APR_INVALID_COMM_ID,
IB_CM_APR_UNSUPPORTED,
IB_CM_APR_REJECT,
IB_CM_APR_REDIRECT,
IB_CM_APR_IS_CURRENT,
IB_CM_APR_INVALID_QPN_EECN,
IB_CM_APR_INVALID_LID,
IB_CM_APR_INVALID_GID,
IB_CM_APR_INVALID_FLOW_LABEL,
IB_CM_APR_INVALID_TCLASS,
IB_CM_APR_INVALID_HOP_LIMIT,
IB_CM_APR_INVALID_PACKET_RATE,
IB_CM_APR_INVALID_SL
};
struct ib_cm_apr_event_param {
enum ib_cm_apr_status ap_status;
void *apr_info;
u8 info_len;
};
struct ib_cm_sidr_req_event_param {
struct ib_cm_id *listen_id;
__be64 service_id;
/*
* SGID attribute of the request . Currently only
* useful for RoCE .
*/
const struct ib_gid_attr *sgid_attr;
/* P_Key that was used by the GMP's BTH header */
u16 bth_pkey;
u8 port;
u16 pkey;
};
enum ib_cm_sidr_status {
IB_SIDR_SUCCESS,
IB_SIDR_UNSUPPORTED,
IB_SIDR_REJECT,
IB_SIDR_NO_QP,
IB_SIDR_REDIRECT,
IB_SIDR_UNSUPPORTED_VERSION
};
struct ib_cm_sidr_rep_event_param {
enum ib_cm_sidr_status status;
u32 qkey;
u32 qpn;
void *info;
const struct ib_gid_attr *sgid_attr;
u8 info_len;
};
struct ib_cm_event {
enum ib_cm_event_type event;
union {
struct ib_cm_req_event_param req_rcvd;
struct ib_cm_rep_event_param rep_rcvd;
/* No data for RTU received events. */
struct ib_cm_rej_event_param rej_rcvd;
struct ib_cm_mra_event_param mra_rcvd;
struct ib_cm_lap_event_param lap_rcvd;
struct ib_cm_apr_event_param apr_rcvd;
/* No data for DREQ/DREP received events. */
struct ib_cm_sidr_req_event_param sidr_req_rcvd;
struct ib_cm_sidr_rep_event_param sidr_rep_rcvd;
enum ib_wc_status send_status;
} param;
void *private_data;
};
#define CM_REQ_ATTR_ID cpu_to_be16(0 x0010)
#define CM_MRA_ATTR_ID cpu_to_be16(0 x0011)
#define CM_REJ_ATTR_ID cpu_to_be16(0 x0012)
#define CM_REP_ATTR_ID cpu_to_be16(0 x0013)
#define CM_RTU_ATTR_ID cpu_to_be16(0 x0014)
#define CM_DREQ_ATTR_ID cpu_to_be16(0 x0015)
#define CM_DREP_ATTR_ID cpu_to_be16(0 x0016)
#define CM_SIDR_REQ_ATTR_ID cpu_to_be16(0 x0017)
#define CM_SIDR_REP_ATTR_ID cpu_to_be16(0 x0018)
#define CM_LAP_ATTR_ID cpu_to_be16(0 x0019)
#define CM_APR_ATTR_ID cpu_to_be16(0 x001A)
/**
* ib_cm_handler - User - defined callback to process communication events .
* @ cm_id : Communication identifier associated with the reported event .
* @ event : Information about the communication event .
*
* IB_CM_REQ_RECEIVED and IB_CM_SIDR_REQ_RECEIVED communication events
* generated as a result of listen requests result in the allocation of a
* new @ cm_id . The new @ cm_id is returned to the user through this callback .
* Clients are responsible for destroying the new @ cm_id . For peer - to - peer
* IB_CM_REQ_RECEIVED and all other events , the returned @ cm_id corresponds
* to a user ' s existing communication identifier .
*
* Users may not call ib_destroy_cm_id while in the context of this callback ;
* however , returning a non - zero value instructs the communication manager to
* destroy the @ cm_id after the callback completes .
*/
typedef int (*ib_cm_handler)(struct ib_cm_id *cm_id,
const struct ib_cm_event *event);
struct ib_cm_id {
ib_cm_handler cm_handler;
void *context;
struct ib_device *device;
__be64 service_id;
enum ib_cm_state state; /* internal CM/debug use */
enum ib_cm_lap_state lap_state; /* internal CM/debug use */
__be32 local_id;
__be32 remote_id;
u32 remote_cm_qpn; /* 1 unless redirected */
};
/**
* ib_create_cm_id - Allocate a communication identifier .
* @ device : Device associated with the cm_id . All related communication will
* be associated with the specified device .
* @ cm_handler : Callback invoked to notify the user of CM events .
* @ context : User specified context associated with the communication
* identifier .
*
* Communication identifiers are used to track connection states , service
* ID resolution requests , and listen requests .
*/
struct ib_cm_id *ib_create_cm_id(struct ib_device *device,
ib_cm_handler cm_handler,
void *context);
/**
* ib_destroy_cm_id - Destroy a connection identifier .
* @ cm_id : Connection identifier to destroy .
*
* This call blocks until the connection identifier is destroyed .
*/
void ib_destroy_cm_id(struct ib_cm_id *cm_id);
#define IB_SERVICE_ID_AGN_MASK cpu_to_be64(0 xFF00000000000000ULL)
#define IB_CM_ASSIGN_SERVICE_ID cpu_to_be64(0 x0200000000000000ULL)
#define IB_CMA_SERVICE_ID cpu_to_be64(0 x0000000001000000ULL)
#define IB_CMA_SERVICE_ID_MASK cpu_to_be64(0 xFFFFFFFFFF000000ULL)
#define IB_SDP_SERVICE_ID cpu_to_be64(0 x0000000000010000ULL)
#define IB_SDP_SERVICE_ID_MASK cpu_to_be64(0 xFFFFFFFFFFFF0000ULL)
/**
* ib_cm_listen - Initiates listening on the specified service ID for
* connection and service ID resolution requests .
* @ cm_id : Connection identifier associated with the listen request .
* @ service_id : Service identifier matched against incoming connection
* and service ID resolution requests . The service ID should be specified
* network - byte order . If set to IB_CM_ASSIGN_SERVICE_ID , the CM will
* assign a service ID to the caller .
*/
int ib_cm_listen(struct ib_cm_id *cm_id, __be64 service_id);
struct ib_cm_id *ib_cm_insert_listen(struct ib_device *device,
ib_cm_handler cm_handler,
__be64 service_id);
struct ib_cm_req_param {
struct sa_path_rec *primary_path;
struct sa_path_rec *primary_path_inbound;
struct sa_path_rec *primary_path_outbound;
struct sa_path_rec *alternate_path;
const struct ib_gid_attr *ppath_sgid_attr;
__be64 service_id;
u32 qp_num;
enum ib_qp_type qp_type;
u32 starting_psn;
const void *private_data;
u8 private_data_len;
u8 responder_resources;
u8 initiator_depth;
u8 remote_cm_response_timeout;
u8 flow_control;
u8 local_cm_response_timeout;
u8 retry_count;
u8 rnr_retry_count;
u8 max_cm_retries;
u8 srq;
struct rdma_ucm_ece ece;
};
/**
* ib_send_cm_req - Sends a connection request to the remote node .
* @ cm_id : Connection identifier that will be associated with the
* connection request .
* @ param : Connection request information needed to establish the
* connection .
*/
int ib_send_cm_req(struct ib_cm_id *cm_id,
struct ib_cm_req_param *param);
struct ib_cm_rep_param {
u32 qp_num;
u32 starting_psn;
const void *private_data;
u8 private_data_len;
u8 responder_resources;
u8 initiator_depth;
u8 failover_accepted;
u8 flow_control;
u8 rnr_retry_count;
u8 srq;
struct rdma_ucm_ece ece;
};
/**
* ib_send_cm_rep - Sends a connection reply in response to a connection
* request .
* @ cm_id : Connection identifier that will be associated with the
* connection request .
* @ param : Connection reply information needed to establish the
* connection .
*/
int ib_send_cm_rep(struct ib_cm_id *cm_id,
struct ib_cm_rep_param *param);
/**
* ib_send_cm_rtu - Sends a connection ready to use message in response
* to a connection reply message .
* @ cm_id : Connection identifier associated with the connection request .
* @ private_data : Optional user - defined private data sent with the
* ready to use message .
* @ private_data_len : Size of the private data buffer , in bytes .
*/
int ib_send_cm_rtu(struct ib_cm_id *cm_id,
const void *private_data,
u8 private_data_len);
/**
* ib_send_cm_dreq - Sends a disconnection request for an existing
* connection .
* @ cm_id : Connection identifier associated with the connection being
* released .
* @ private_data : Optional user - defined private data sent with the
* disconnection request message .
* @ private_data_len : Size of the private data buffer , in bytes .
*/
int ib_send_cm_dreq(struct ib_cm_id *cm_id,
const void *private_data,
u8 private_data_len);
/**
* ib_send_cm_drep - Sends a disconnection reply to a disconnection request .
* @ cm_id : Connection identifier associated with the connection being
* released .
* @ private_data : Optional user - defined private data sent with the
* disconnection reply message .
* @ private_data_len : Size of the private data buffer , in bytes .
*
* If the cm_id is in the correct state , the CM will transition the connection
* to the timewait state , even if an error occurs sending the DREP message .
*/
int ib_send_cm_drep(struct ib_cm_id *cm_id,
const void *private_data,
u8 private_data_len);
/**
* ib_cm_notify - Notifies the CM of an event reported to the consumer .
* @ cm_id : Connection identifier to transition to established .
* @ event : Type of event .
*
* This routine should be invoked by users to notify the CM of relevant
* communication events . Events that should be reported to the CM and
* when to report them are :
*
* IB_EVENT_COMM_EST - Used when a message is received on a connected
* QP before an RTU has been received .
* IB_EVENT_PATH_MIG - Notifies the CM that the connection has failed over
* to the alternate path .
*/
int ib_cm_notify(struct ib_cm_id *cm_id, enum ib_event_type event);
/**
* ib_send_cm_rej - Sends a connection rejection message to the
* remote node .
* @ cm_id : Connection identifier associated with the connection being
* rejected .
* @ reason : Reason for the connection request rejection .
* @ ari : Optional additional rejection information .
* @ ari_length : Size of the additional rejection information , in bytes .
* @ private_data : Optional user - defined private data sent with the
* rejection message .
* @ private_data_len : Size of the private data buffer , in bytes .
*/
int ib_send_cm_rej(struct ib_cm_id *cm_id,
enum ib_cm_rej_reason reason,
void *ari,
u8 ari_length,
const void *private_data,
u8 private_data_len);
/**
* ib_prepare_cm_mra - Prepares to send a message receipt acknowledgment to a
connection message in case duplicates are received .
* @ cm_id : Connection identifier associated with the connection message .
*/
int ib_prepare_cm_mra(struct ib_cm_id *cm_id);
/**
* ib_cm_init_qp_attr - Initializes the QP attributes for use in transitioning
* to a specified QP state .
* @ cm_id : Communication identifier associated with the QP attributes to
* initialize .
* @ qp_attr : On input , specifies the desired QP state . On output , the
* mandatory and desired optional attributes will be set in order to
* modify the QP to the specified state .
* @ qp_attr_mask : The QP attribute mask that may be used to transition the
* QP to the specified state .
*
* Users must set the @ qp_attr - > qp_state to the desired QP state . This call
* will set all required attributes for the given transition , along with
* known optional attributes . Users may override the attributes returned from
* this call before calling ib_modify_qp .
*/
int ib_cm_init_qp_attr(struct ib_cm_id *cm_id,
struct ib_qp_attr *qp_attr,
int *qp_attr_mask);
struct ib_cm_sidr_req_param {
struct sa_path_rec *path;
const struct ib_gid_attr *sgid_attr;
__be64 service_id;
unsigned long timeout_ms;
const void *private_data;
u8 private_data_len;
u8 max_cm_retries;
};
/**
* ib_send_cm_sidr_req - Sends a service ID resolution request to the
* remote node .
* @ cm_id : Communication identifier that will be associated with the
* service ID resolution request .
* @ param : Service ID resolution request information .
*/
int ib_send_cm_sidr_req(struct ib_cm_id *cm_id,
struct ib_cm_sidr_req_param *param);
struct ib_cm_sidr_rep_param {
u32 qp_num;
u32 qkey;
enum ib_cm_sidr_status status;
const void *info;
u8 info_length;
const void *private_data;
u8 private_data_len;
struct rdma_ucm_ece ece;
};
/**
* ib_send_cm_sidr_rep - Sends a service ID resolution reply to the
* remote node .
* @ cm_id : Communication identifier associated with the received service ID
* resolution request .
* @ param : Service ID resolution reply information .
*/
int ib_send_cm_sidr_rep(struct ib_cm_id *cm_id,
struct ib_cm_sidr_rep_param *param);
/**
* ibcm_reject_msg - return a pointer to a reject message string .
* @ reason : Value returned in the REJECT event status field .
*/
const char *__attribute_const__ ibcm_reject_msg(int reason);
#endif /* IB_CM_H */
Messung V0.5 in Prozent C=96 H=100 G=97
¤ Dauer der Verarbeitung: 0.10 Sekunden
(vorverarbeitet am 2026-09-29)
¤
*© Formatika GbR, Deutschland
2026-10-10
Neuigkeiten
Aktuelles
Motto des Tages
Open Source Software
Jenseits des Üblichen ....
Besucherstatistik
Statistik
#Sources=1126864
#Domains=1897691