/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
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* CDDL HEADER END
*/
/*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _SYS_IB_IBTL_IBTI_CM_H
#define _SYS_IB_IBTL_IBTI_CM_H
/*
* ibti_cm.h
*
* This file contains the data structure definitions for the IBTI
* communication manager (CM). It is only included in ibti.h
*/
#ifdef __cplusplus
extern "C" {
#endif
/*
* Defines.
*/
#define IBT_MAX_PRIV_DATA_SZ 224
#define IBT_DREP_PRIV_DATA_SZ 224
#define IBT_RTU_PRIV_DATA_SZ 224
#define IBT_MRA_PRIV_DATA_SZ 222
#define IBT_DREQ_PRIV_DATA_SZ 220
#define IBT_REP_PRIV_DATA_SZ 196
#define IBT_LAP_PRIV_DATA_SZ 168
#define IBT_APR_PRIV_DATA_SZ 148
#define IBT_REJ_PRIV_DATA_SZ 148
#define IBT_REQ_PRIV_DATA_SZ 92
#define IBT_SIDR_REQ_PRIV_DATA_SZ 216
#define IBT_SIDR_REP_PRIV_DATA_SZ 136
#define IBT_IP_HDR_PRIV_DATA_SZ 36
#define IBT_CM_ADDL_REJ_LEN 72 /* Additional Rej Info len */
/* This is the max consumer addl */
/* reject info len */
#define IBT_CM_SIDR_CP_LEN 72 /* SIDR REP Class Port Info len */
#define IBT_CM_APR_ADDL_LEN 72 /* Additional Info len in APR message */
typedef uint8_t ibt_priv_data_len_t;
/*
* CM channel handler reject reasons.
*
* Refer to InfiniBand Architecture Release Volume 1 Rev 1.0a:
* Section 12.6.7.2 Rejection Reason, and RDMA IP CM Service Annex
*
* Note:
* When a REJ happens for an RDMA-aware ULP, a consumer reject code
* indicating an IP CM Service reject or a RDMA-Aware ULP reject can
* be returned. In the IBTA spec both use the consumer reject code, but
* are distinguished by the REJ layer byte (table 3 of the annex 11).
* The IBTF CM can thus tell what type of reject has been returned. When
* a RDMA ULP issues a consumer REJ to an RDMA REQ then the CM will
* return an IBT_CM_CONSUMER ibt_cm_reason_t. The ARI data is returned
* in an ibt_ari_con_t struct accessed by the 'ari_consumer' member of
* the ibt_arej_info_t. However the consumer reject data begins at
* 'ari_consumer.rej_ari[1]', and is of length
* 'ari_consumer.rej_ari_len - 1' (the first byte is the REJ layer byte),
* where as for a non RDMA-aware ULP consumer REJ, the ARI data begins
* at 'ari_consumer.rej_ari[0]' and is of length 'ari_consumer.rej_ari_len'
*
* If an RDMA-aware ULP REQ is rejected by the IP CM Service layer, the
* CM will return the new IBT_CM_RDMA_IP ibt_cm_reason_t, and the
* private data is returned in an ibt_ari_ip_t struct accessed via the
* 'ari_ip' member of the ibt_arej_info_t struct.
*
* If an RDMA IP CM REQ is sent to a non RDMA-aware ULP consumer, then
* the REQ is Rejected with an IBT_CM_INVALID_SID ibt_cm_reason_t.
*/
typedef enum ibt_cm_reason_e {
IBT_CM_SUCCESS = 0, /* Success */
IBT_CM_NO_CHAN = 1, /* Remote unable to allocate a CHAN */
IBT_CM_NO_EEC = 2, /* Remote unable to allocate an EEC */
IBT_CM_NO_RESC = 3, /* Remote unable to allocate resource */
IBT_CM_TIMEOUT = 4, /* CM protocol timed out waiting for */
/* a msg */
IBT_CM_NOT_SUPPORTED = 5, /* Request not supported */
IBT_CM_INVALID_CID = 6, /* Local CID or Remote CID invalid */
IBT_CM_INVALID_COMM_INS = 7, /* Local CID, Remote CID, Channel */
/* does not refer to a valid */
/* communication Instance. */
IBT_CM_INVALID_SID = 8, /* Service not supported or not */
/* recognized */
IBT_CM_INVALID_SRV_TYPE = 9, /* Invalid transport service type */
IBT_CM_CONN_STALE = 10, /* Stale connection */
IBT_CM_INVALID_RDC = 11, /* RDC does not exist */
IBT_CM_PRIM_GID = 12, /* Primary remote port gid rejected. */
IBT_CM_PRIM_LID = 13, /* Primary remote port lid rejected. */
IBT_CM_INVALID_PRIM_SL = 14, /* Primary Requested SL not supported */
IBT_CM_INVALID_PRIM_TC = 15, /* Primary Requested traffic class */
/* not supported */
IBT_CM_INVALID_PRIM_HOP = 16, /* Primary Requested hop limit not */
/* accepted */
IBT_CM_INVALID_PRIM_RATE = 17, /* Primary Packet rate not accepted */
IBT_CM_ALT_GID = 18, /* Alternate remote port gid rejected */
IBT_CM_ALT_LID = 19, /* Alternate remote port lid rejected */
IBT_CM_INVALID_ALT_SL = 20, /* Alternate Requested SL not */
/* supported */
IBT_CM_INVALID_ALT_TC = 21, /* Alternate Requested traffic class */
/* not supported */
IBT_CM_INVALID_ALT_HOP = 22, /* Alternate Requested hop limit */
/* accepted */
IBT_CM_INVALID_ALT_RATE = 23, /* Alternate Packet rate not accepted */
IBT_CM_REDIRECT_CM = 24, /* Port & CM redirected */
IBT_CM_PORT_REDIRECT = 25, /* Port redirected */
IBT_CM_INVALID_MTU = 26, /* Path MTU not supported */
IBT_CM_INSUFF_RESOURCE = 27, /* Insufficient responder resources */
IBT_CM_CONSUMER = 28, /* Consumer rejected connection */
IBT_CM_RNR_RETRY_CNT_REJ = 29, /* RNR NAK retry count rejected */
IBT_CM_DUP_COM_ID = 30, /* Local CID in REQ is duplicated */
IBT_CM_CLASS_NO_SUPPORT = 31, /* Class version not supported */
IBT_CM_INVALID_PRIM_FLOW = 32, /* Invalid primary flow label */
IBT_CM_INVALID_ALT_FLOW = 33, /* Invalid alternate flow label */
IBT_CM_DUP_CONN_REQ = 1000, /* Duplicate connection request */
IBT_CM_ABORT = 1001, /* Connection aborted */
IBT_CM_CI_FAILURE = 1002, /* A call to CI failed, could be */
/* query/modify channel */
IBT_CM_CHAN_INVALID_STATE = 1003, /* Passive's QP is not in Init */
/* state */
IBT_CM_RDMA_IP = 1004 /* RDMA IP CM reject */
} ibt_cm_reason_t;
/*
* CM flags.
*/
typedef uint8_t ibt_cm_flags_t;
#define IBT_CM_NO_FLAGS 0x0
#define IBT_CM_FLOW_CONTROL 0x1
#define IBT_CM_SRQ_EXISTS 0x2
/*
* The CM Handler function return values.
*/
typedef enum ibt_cm_status_e {
IBT_CM_ACCEPT = 0,
IBT_CM_REJECT = 1,
IBT_CM_REDIRECT_PORT = 2, /* Redirect port */
IBT_CM_REDIRECT = 3, /* Redirect port and CM */
IBT_CM_NO_CHANNEL = 4, /* Unable to allocate a channel */
IBT_CM_NO_RESOURCE = 5, /* Unable to allocate a resource */
IBT_CM_DEFAULT = 6, /* Do the default action */
IBT_CM_DEFER = 7 /* Can't complete processing now */
} ibt_cm_status_t; /* will call ibt_cm_proceed() */
/* later */
/*
* SIDR_REP status type
*/
typedef enum ibt_sidr_status_e {
IBT_CM_SREP_CHAN_VALID = 0,
IBT_CM_SREP_SID_INVALID = 1, /* Service ID not supported */
IBT_CM_SREP_REJ = 2, /* Service provider reject */
IBT_CM_SREP_NO_CHAN = 3, /* No channel available */
IBT_CM_SREP_REDIRECT = 4, /* Redirect request */
IBT_CM_SREP_CL_INVALID = 5, /* Class Version is invalid */
IBT_CM_SREP_TIMEOUT = 1000 /* No SIDR_REP received */
} ibt_sidr_status_t;
/*
* Alternate path status type
* The implementation defined status codes begin from 20. The status codes
* below 20 are based on apr_status in the APR mad.
*/
typedef enum ibt_ap_status_e {
IBT_CM_AP_LOADED = 0, /* AP loaded successfully */
IBT_CM_AP_INVALID_COMMID = 1, /* Invalid communication instance */
IBT_CM_AP_NOT_SUPPORTED = 2, /* Alternate paths not supported */
IBT_CM_AP_REJECT = 3, /* Failover port rejected */
IBT_CM_AP_REDIRECT = 4, /* Reject - redirect */
IBT_CM_AP_MATCH_PRIM = 5, /* AP matches primary path */
IBT_CM_AP_QPNEECN_INVALID = 6, /* AP QPN/EECN does not match */
IBT_CM_AP_RLID_REJECTED = 7, /* AP remote port lid rejected */
IBT_CM_AP_RGID_REJECTED = 8, /* AP remote port gid rejected */
IBT_CM_AP_FLOW_REJECTED = 9, /* AP flow label rejected */
IBT_CM_AP_TCLASS_REJECTED = 10, /* AP traffic class rejected */
IBT_CM_AP_HOP_REJECTED = 11, /* AP hop limit rejected */
IBT_CM_AP_RATE_REJECTED = 12, /* AP static packet rate rejected */
IBT_CM_AP_SL_REJECTED = 13, /* AP service level rejected */
IBT_CM_AP_TIMEOUT = 1000, /* LAP timed out */
IBT_CM_AP_ABORT = 1001 /* ibt_set_alternate_path returned */
/* earlier because of connection */
/* getting closed */
} ibt_ap_status_t;
/*
* Communication event types.
*/
typedef enum ibt_cm_event_type_e {
IBT_CM_EVENT_REQ_RCV = 0x1,
IBT_CM_EVENT_REP_RCV,
IBT_CM_EVENT_MRA_RCV,
IBT_CM_EVENT_LAP_RCV,
IBT_CM_EVENT_APR_RCV,
IBT_CM_EVENT_CONN_EST, /* RTU has been sent/recvd and it is */
/* OK to use the connection */
IBT_CM_EVENT_CONN_CLOSED, /* Connection has been closed and it */
/* is OK to free resources associated */
/* with the connection. */
IBT_CM_EVENT_FAILURE /* The CM Failure see cf_code in the */
/* ibt_cm_conn_failed_t struct for */
/* details of the failure */
} ibt_cm_event_type_t;
/*
* CM and Port redirect information.
*/
typedef struct ibt_redirect_info_s {
ib_gid_t rdi_gid;
uint8_t rdi_tclass;
uint8_t rdi_sl:4;
uint_t rdi_flow:20;
ib_lid_t rdi_dlid;
ib_qpn_t rdi_qpn;
ib_qkey_t rdi_qkey;
ib_pkey_t rdi_pkey;
} ibt_redirect_info_t;
/*
* Values for rep_failover_status.
*/
#define IBT_CM_FAILOVER_ACCEPT 0x00 /* Failover port accepted */
#define IBT_CM_FAILOVER_REJ_NOTSUPP 0x01 /* Failover not supported */
#define IBT_CM_FAILOVER_REJ 0x02 /* Failover port rejected */
/*
* CM REP_RCV event structure.
*/
typedef struct ibt_cm_rep_rcv_s {
uint8_t rep_rdma_ra_in; /* Arbitrated responder */
/* resources (rdma_ra_in) */
uint8_t rep_rdma_ra_out; /* Arbitrated initiator */
/* depth (rdma_ra_out) */
clock_t rep_service_time; /* time in clock ticks */
/* Time to complete */
/* processing of REP event */
uint8_t rep_failover_status; /* Failover Port status */
ibt_cm_flags_t rep_flags; /* EE flow control, SRQ etc */
} ibt_cm_rep_rcv_t;
/*
* Values for mra_msg_type.
*/
#define IBT_CM_MRA_TYPE_REQ 0x00 /* mra_msg values */
#define IBT_CM_MRA_TYPE_REP 0x01
#define IBT_CM_MRA_TYPE_LAP 0x02
/*
* CM MRA_RCV event structure.
*/
typedef struct ibt_cm_mra_rcv_s {
uint8_t mra_msg_type; /* The message being MRA'd */
clock_t mra_service_time; /* timeout in microseconds */
} ibt_cm_mra_rcv_t;
/*
* CM LAP_RCV event structure.
*/
typedef struct ibt_cm_lap_rcv_s {
ibt_adds_vect_t lap_alternate_path;
clock_t lap_timeout; /* timeout in microseconds */
/* This is the time that the */
/* Service handler has to */
/* return to the CM */
} ibt_cm_lap_rcv_t;
#define IBT_CM_IP_MAJ_VER 0
#define IBT_CM_IP_MIN_VER 0
#define IBT_CM_IP_IPV_V4 0x4
#define IBT_CM_IP_IPV_V6 0x6
/*
* Consumer defined Additional reject information.
*/
typedef struct ibt_ari_con_s {
uint8_t rej_ari_len; /* Length */
uint8_t rej_ari[IBT_CM_ADDL_REJ_LEN]; /* Buffer */
} ibt_ari_con_t;
/*
* Consumer defined Additional reject information.
* For RDMA IP CM Service.
*/
typedef uint8_t ibt_ari_ip_reason_t;
#define IBT_ARI_IP_UNSPECIFIED 0x0
#define IBT_ARI_IP_MAJOR_VERSION 0x1
#define IBT_ARI_IP_MINOR_VERSION 0x2
#define IBT_ARI_IP_IPV 0x3
#define IBT_ARI_IP_SRC_ADDR 0x4
#define IBT_ARI_IP_DST_ADDR 0x5
#define IBT_ARI_IP_UNKNOWN_ADDR 0x6
typedef struct ibt_ari_ip_s {
ibt_ip_addr_t ip_suggested_addr; /* IP_UNKNOWN_ADDR */
boolean_t ip_suggested; /* suggested valid */
ibt_ari_ip_reason_t ip_reason;
uint8_t ip_suggested_version:4; /* IP_MAJOR_VERSION */
/* IP_MINOR_VERSION */
/* IP_IPV, */
/* IP_SRC_ADDR, */
/* IP_DST_ADDR */
} ibt_ari_ip_t;
/*
* Additional reject information.
*/
typedef union ibt_arej_info_u {
ibt_ari_con_t ari_consumer; /* IBT_CM_CONSUMER */
ib_gid_t ari_gid; /* IBT_CM_PRIM_GID, */
/* IBT_CM_ALT_GID, */
/* IBT_CM_PORT_REDIRECT */
ib_lid_t ari_lid; /* IBT_CM_PRIM_LID, */
/* IBT_CM_ALT_LID */
uint8_t ari_sl:4; /* IBT_CM_INVALID_PRIM_SL, */
/* IBT_CM_INVALID_ALT_SL */
uint8_t ari_tclass; /* IBT_CM_INVALID_PRIM_TC, */
/* IBT_CM_INVALID_ALT_TC */
uint8_t ari_hop; /* IBT_CM_INVALID_PRIM_HOP, */
/* IBT_CM_INVALID_ALT_HOP */
uint_t ari_flow:20; /* IBT_CM_INVALID_PRIM_FLOW, */
/* IBT_CM_INVALID_ALT_FLOW */
ibt_srate_t ari_rate; /* IBT_CM_INVALID_PRIM_RATE, */
/* IBT_CM_INVALID_ALT_RATE */
ib_mtu_t ari_mtu; /* IBT_CM_INVALID_MTU */
ibt_redirect_info_t ari_redirect; /* IBT_CM_REDIRECT_CM */
ibt_ari_ip_t ari_ip; /* IBT_CM_RDMA_IP */
} ibt_arej_info_t;
/*
* CM APR_RCV event structure.
*/
typedef struct ibt_cm_apr_rcv_s {
ibt_ap_status_t apr_status;
boolean_t apr_arej_info_valid;
ibt_arej_info_t apr_arej_info;
} ibt_cm_apr_rcv_t;
/*
* Connection Failed Message type (values of cf_msg).
* Identifies the CM message that either timed out or is being rejected.
*/
#define IBT_CM_FAILURE_REQ 0x00
#define IBT_CM_FAILURE_REP 0x01
#define IBT_CM_FAILURE_UNKNOWN 0x02
#define IBT_CM_FAILURE_LAP 0x03
/*
* CM Failure code (values of cf_code).
* Identifies the reason for failure.
*/
#define IBT_CM_FAILURE_REJ_SENT 0x00
#define IBT_CM_FAILURE_REJ_RCV 0x01
#define IBT_CM_FAILURE_TIMEOUT 0x02
#define IBT_CM_FAILURE_DUP 0x03
#define IBT_CM_FAILURE_STALE 0x04
/*
* IBT_CM_EVENT_FAILURE event struct.
*/
typedef struct ibt_cm_conn_failed_s {
uint8_t cf_code; /* Failure Code */
uint8_t cf_msg; /* The message that timed out or is */
/* being rejected */
boolean_t cf_arej_info_valid; /* Is cf_additional valid? */
ibt_cm_reason_t cf_reason; /* Reject reason */
ibt_arej_info_t cf_additional; /* Additional Reject info */
} ibt_cm_conn_failed_t;
/*
* CM REQ_RCV event structure.
*
* The req_cm_opaque is an IBTF CM opaque (to the client) value, that should
* be returned to the IBTF CM if the client/server CM handler wishes to call
* ibt_cm_delay().
*
* prim_addr->av_dgid Is the GID of the requester.
* prim_addr->av_sgid Is the local GID to which the
* requester is attempting to establish
* a connection to.
* hca_guid Is the HCA GUID that contains the
* prim_addr->av_sgid
* prim_hca_port Is the port on the hca_guid that
* prim_addr->av_sgid is on.
*/
typedef struct ibt_cm_req_rcv_s {
ib_svc_id_t req_service_id;
ibt_tran_srv_t req_transport;
ib_guid_t req_hca_guid;
uint8_t req_prim_hca_port;
uint8_t req_alt_hca_port;
ibt_adds_vect_t req_prim_addr;
ibt_adds_vect_t req_alt_addr;
uint8_t req_rdma_ra_in; /* Offered responder */
/* resources. */
uint8_t req_rdma_ra_out; /* Offered initiator depth */
clock_t req_timeout; /* timeout in microseconds */
/* This is the time that the */
/* Service handler has to */
/* return to the CM */
ib_qpn_t req_remote_qpn;
ib_qkey_t req_remote_qkey;
ib_pkey_t req_pkey;
ibt_cm_flags_t req_flags; /* EE flow control etc */
uint8_t req_retry_cnt:3;
ibt_rnr_retry_cnt_t req_rnr_retry_cnt;
ib_eecn_t req_opaque1;
ib_eecn_t req_opaque2;
} ibt_cm_req_rcv_t;
typedef struct ibt_ofuvcm_req_data_s {
uint32_t req_rq_psn:24;
uint32_t reserved:8;
ib_mtu_t req_path_mtu;
ibt_rnr_nak_time_t req_rnr_nak_time;
} ibt_ofuvcm_req_data_t;
/*
* The IBT_CM_EVENT_CONN_CLOSED event is generated by the CM when a connection
* has been closed. The reason the connection was closed is given in the
* "closed" member of the cm_event as one of:
*
* A client can only call ibt_free_channel() to free channel resources on
* receipt of the IBT_CM_EVENT_CONN_CLOSED event.
*/
#define IBT_CM_CLOSED_DREP_RCVD 0x01
#define IBT_CM_CLOSED_DREQ_RCVD 0x02
#define IBT_CM_CLOSED_REJ_RCVD 0x03
#define IBT_CM_CLOSED_DREQ_TIMEOUT 0x04
#define IBT_CM_CLOSED_DUP 0x05
#define IBT_CM_CLOSED_ABORT 0x06
#define IBT_CM_CLOSED_STALE 0x07
#define IBT_CM_CLOSED_ALREADY 0x08
/*
* Operation type in ibt_cm_event_type_t.
*
* Note:
* The IBT_CM_EVENT_CONN_EST event has no associated "cm_event"
* field in the ibt_cm_event_t structure.
*
* The cm_session_id is a CM opaque (to the client) value, that
* should be returned to the CM if the client/server CM handler wishes
* to call ibt_cm_delay() or ibt_cm_proceed().
*
*/
typedef struct ibt_cm_event_s {
ibt_cm_event_type_t cm_type; /* Describes the event */
void *cm_session_id; /* Used by the CM */
ibt_channel_hdl_t cm_channel; /* Event channel. Not valid */
/* for ibt_cm_req_rcv_t */
ibt_eec_hdl_t cm_opaque;
ibt_priv_data_len_t cm_priv_data_len; /* 0 if no private */
void *cm_priv_data; /* data returned */
union {
ibt_cm_rep_rcv_t rep;
ibt_cm_req_rcv_t req;
ibt_cm_lap_rcv_t lap;
ibt_cm_apr_rcv_t apr;
ibt_cm_mra_rcv_t mra;
ibt_cm_conn_failed_t failed;
uint8_t closed;
} cm_event; /* operation specific */
} ibt_cm_event_t;
/*
* CM Return structure for an incoming REQ
* Server handler that wishes to accept the connection, fills all the
* values before returning to CM
*/
typedef struct ibt_cm_ret_rep_s {
ibt_channel_hdl_t cm_channel; /* The channel overwhich the */
/* connection will be */
/* established */
/* can be returned NULL */
/* if no resources available */
uint8_t cm_rdma_ra_out; /* max RDMA-R/Atomic sent */
/* Number of RDMA RD's & */
/* Atomics outstanding */
uint8_t cm_rdma_ra_in; /* Incoming RDMA-R/Atomic */
/* Responder resources for */
/* handling incoming */
/* RDMA RD's & Atomics */
ibt_rnr_retry_cnt_t cm_rnr_retry_cnt;
} ibt_cm_ret_rep_t;
/*
* Define an ibt_cm_proceed() argument union.
*
* rep is valid when an IBT client cm handler has decided to continue a
* REQ_RCV, accepting the connection.
*
* rej is valid when an IBT client cm handler has decided to continue a
* REQ_RCV or REP_RCV, rejecting the message.
*
* apr is valid when an IBT client cm handler has decided to continue a
* LAP_RCV, redirecting the lap request.
*/
typedef union ibt_cm_proceed_reply_s {
ibt_cm_ret_rep_t rep; /* Return for REP */
ibt_arej_info_t rej; /* Return for REJ */
ibt_redirect_info_t apr; /* Return for APR */
} ibt_cm_proceed_reply_t;
/*
* Define a CM handler return arguments structure.
*
* cm_ret.rep is returned to the CM when an IBT client cm handler has
* decided to accept a connection in response to a CM REQ_RCV event.
*
* cm_ret.rej is returned to the CM when an IBT client cm handler
* has decided to reject the connection in response to a CM REQ_RCV event.
*
* cm_ret.apr is returned to the CM when an IBT client cm handler
* has decided to redirect the lap request in response to a CM LAP RCV event.
*
* The client/server should update cm_ret_len with number of private data
* bytes filled in priv_data arg of the cm handler.
*/
typedef struct ibt_cm_return_args_s {
ibt_priv_data_len_t cm_ret_len;
union {
ibt_cm_ret_rep_t rep; /* Return for REP */
ibt_arej_info_t rej; /* Return for REJ */
ibt_redirect_info_t apr; /* Return for APR */
} cm_ret; /* reply specific */
} ibt_cm_return_args_t;
/*
* Communication Manager UD event types.
*/
typedef enum ibt_cm_ud_event_type_e {
IBT_CM_UD_EVENT_SIDR_REQ = 1,
IBT_CM_UD_EVENT_SIDR_REP = 2
} ibt_cm_ud_event_type_t;
/*
* CM SIDR_REQ event structure.
*/
typedef struct ibt_cm_sidr_req_s {
ib_guid_t sreq_hca_guid;
uint8_t sreq_hca_port;
ib_pkey_t sreq_pkey;
ib_svc_id_t sreq_service_id;
} ibt_cm_sidr_req_t;
/*
* CM SIDR_REP event structure.
*/
typedef struct ibt_cm_sidr_rep_s {
ibt_sidr_status_t srep_status;
ib_svc_id_t srep_service_id;
ib_qkey_t srep_remote_qkey;
ib_qpn_t srep_remote_qpn;
ibt_redirect_info_t srep_redirect; /* Only valid if redirect */
} ibt_cm_sidr_rep_t;
/*
* Operation type in ibt_cm_ud_event_type_t.
*
* The cm_session_id is a CM opaque (to the client) value, that
* should be returned to the CM if the client/server CM handler
* wishes to call ibt_cm_ud_proceed().
*/
typedef struct ibt_cm_ud_event_s {
ibt_cm_ud_event_type_t cm_type; /* Describes the event record */
void *cm_session_id; /* Used by the CM */
ibt_priv_data_len_t cm_priv_data_len;
void *cm_priv_data;
union {
ibt_cm_sidr_rep_t sidr_rep;
ibt_cm_sidr_req_t sidr_req;
} cm_event; /* operation specific */
} ibt_cm_ud_event_t;
/*
* Define a CM UD handler return arguments structure.
*
* The information here is returned to the CM when an IBT client CM UD
* handler has decided to communicate (via UD messages) with the requester
* of the SIDR_REQ_RCV event.
*
* The ud_channel encodes the QPN and Q_Key to be placed in the SIDR_REP.
*
* CM sets ud_ret_len to 0 before calling the UD CM handler. If the CM UD
* handler wishes to send private data back, it needs to update ud_ret_len
* with the actual number of bytes to be sent back in the SIDR_REP MAD. It
* copies said data to the buffer pointed to by the ret_priv_data argument.
*
* The ud_redirect structure should only be updated if the UD CM handler is
* Redirecting a CM request.
*/
typedef struct ibt_cm_ud_return_args_s {
ibt_priv_data_len_t ud_ret_len;
ibt_channel_hdl_t ud_channel;
ibt_redirect_info_t ud_redirect;
} ibt_cm_ud_return_args_t;
/*
* IBT Client CM Callback function typedefs.
*
* ibt_cm_handler_t:
*
* The CM event handler function. An IBT client callback that handles
* CM events. If the handler will exceed the event service timeout
* then it should call ibt_cm_delay(), specifying the maximum time it
* will take to complete processing the CM event.
*
* Clients are advised not to issue blocking calls from a cm handler, as this
* would block the CM threads, and could delay or block other client
* connections.
*
* Clients are allowed to make resource clean up/free calls in the CM handler
* such as ibt_free_cq, ibt_free_rc/ud_channel, etc. on connection failure
* or tear down.
*
* Clients should not call ibt_close_rc_channel in the cm handler for connection
* failure or tear down events, as these events already perform the processing
* necessary to close the channel.
*
* Clients can call ibt_close_rc_channel only in the non-blocking mode from
* the cm handler for connection abort.
*/
typedef ibt_cm_status_t (*ibt_cm_handler_t)(void *cm_private,
ibt_cm_event_t *event, ibt_cm_return_args_t *ret_args,
void *ret_priv_data, ibt_priv_data_len_t ret_len_max);
/*
* ibt_cm_ud_handler_t - Pointer to the CM UD event handler function.
* This function should handle the following CM
* events:
* IBT_CM_UD_EVENT_SIDR_REQ
* IBT_CM_UD_EVENT_SIDR_REP
*/
typedef ibt_cm_status_t (*ibt_cm_ud_handler_t)(void *ud_cm_private,
ibt_cm_ud_event_t *event, ibt_cm_ud_return_args_t *ret_args,
void *ret_priv_data, ibt_priv_data_len_t ret_len_max);
#ifdef __cplusplus
}
#endif
#endif /* _SYS_IB_IBTL_IBTI_CM_H */