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- /*
- * 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.
- *
- * 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.
- */
- #if !defined(IB_CM_H)
- #define IB_CM_H
- #include <rdma/ib_mad.h>
- #include <rdma/ib_sa.h>
- /* ib_cm and ib_user_cm modules share /sys/class/infiniband_cm */
- extern struct class cm_class;
- 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 ib_sa_path_rec *primary_path;
- struct ib_sa_path_rec *alternate_path;
- __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 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;
- };
- 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
- };
- 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 ib_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;
- /* 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;
- 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(0x0010)
- #define CM_MRA_ATTR_ID cpu_to_be16(0x0011)
- #define CM_REJ_ATTR_ID cpu_to_be16(0x0012)
- #define CM_REP_ATTR_ID cpu_to_be16(0x0013)
- #define CM_RTU_ATTR_ID cpu_to_be16(0x0014)
- #define CM_DREQ_ATTR_ID cpu_to_be16(0x0015)
- #define CM_DREP_ATTR_ID cpu_to_be16(0x0016)
- #define CM_SIDR_REQ_ATTR_ID cpu_to_be16(0x0017)
- #define CM_SIDR_REP_ATTR_ID cpu_to_be16(0x0018)
- #define CM_LAP_ATTR_ID cpu_to_be16(0x0019)
- #define CM_APR_ATTR_ID cpu_to_be16(0x001A)
- /**
- * 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,
- struct ib_cm_event *event);
- struct ib_cm_id {
- ib_cm_handler cm_handler;
- void *context;
- struct ib_device *device;
- __be64 service_id;
- __be64 service_mask;
- 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(0xFF00000000000000ULL)
- #define IB_CM_ASSIGN_SERVICE_ID cpu_to_be64(0x0200000000000000ULL)
- #define IB_CMA_SERVICE_ID cpu_to_be64(0x0000000001000000ULL)
- #define IB_CMA_SERVICE_ID_MASK cpu_to_be64(0xFFFFFFFFFF000000ULL)
- #define IB_SDP_SERVICE_ID cpu_to_be64(0x0000000000010000ULL)
- #define IB_SDP_SERVICE_ID_MASK cpu_to_be64(0xFFFFFFFFFFFF0000ULL)
- /**
- * 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.
- * @service_mask: Mask applied to service ID used to listen across a
- * range of service IDs. If set to 0, the service ID is matched
- * exactly. This parameter is ignored if %service_id is set to
- * IB_CM_ASSIGN_SERVICE_ID.
- */
- int ib_cm_listen(struct ib_cm_id *cm_id, __be64 service_id,
- __be64 service_mask);
- 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 ib_sa_path_rec *primary_path;
- struct ib_sa_path_rec *alternate_path;
- __be64 service_id;
- u32 qp_num;
- enum ib_qp_type qp_type;
- u32 starting_psn;
- const void *private_data;
- u8 private_data_len;
- u8 peer_to_peer;
- 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;
- };
- /**
- * 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;
- };
- /**
- * 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);
- #define IB_CM_MRA_FLAG_DELAY 0x80 /* Send MRA only after a duplicate msg */
- /**
- * ib_send_cm_mra - Sends a message receipt acknowledgement to a connection
- * message.
- * @cm_id: Connection identifier associated with the connection message.
- * @service_timeout: The lower 5-bits specify the maximum time required for
- * the sender to reply to the connection message. The upper 3-bits
- * specify additional control flags.
- * @private_data: Optional user-defined private data sent with the
- * message receipt acknowledgement.
- * @private_data_len: Size of the private data buffer, in bytes.
- */
- int ib_send_cm_mra(struct ib_cm_id *cm_id,
- u8 service_timeout,
- const void *private_data,
- u8 private_data_len);
- /**
- * ib_send_cm_lap - Sends a load alternate path request.
- * @cm_id: Connection identifier associated with the load alternate path
- * message.
- * @alternate_path: A path record that identifies the alternate path to
- * load.
- * @private_data: Optional user-defined private data sent with the
- * load alternate path message.
- * @private_data_len: Size of the private data buffer, in bytes.
- */
- int ib_send_cm_lap(struct ib_cm_id *cm_id,
- struct ib_sa_path_rec *alternate_path,
- const void *private_data,
- u8 private_data_len);
- /**
- * 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);
- /**
- * ib_send_cm_apr - Sends an alternate path response message in response to
- * a load alternate path request.
- * @cm_id: Connection identifier associated with the alternate path response.
- * @status: Reply status sent with the alternate path response.
- * @info: Optional additional information sent with the alternate path
- * response.
- * @info_length: Size of the additional information, in bytes.
- * @private_data: Optional user-defined private data sent with the
- * alternate path response message.
- * @private_data_len: Size of the private data buffer, in bytes.
- */
- int ib_send_cm_apr(struct ib_cm_id *cm_id,
- enum ib_cm_apr_status status,
- void *info,
- u8 info_length,
- const void *private_data,
- u8 private_data_len);
- struct ib_cm_sidr_req_param {
- struct ib_sa_path_rec *path;
- __be64 service_id;
- int 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;
- };
- /**
- * 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);
- #endif /* IB_CM_H */
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