/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (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]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2003 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#ifndef _SYS_IB_IB_PKT_HDRS_H
#define _SYS_IB_IB_PKT_HDRS_H

#ifdef __cplusplus
extern "C" {
#endif

typedef struct _ib_lrh_hdr_t {
        uint8_t         VL_LVer;        /* virtual lane pkt is using & */
                                        /* link level protocol of pkt  */
        uint8_t         SL_LNH;         /* requested service level */
                                        /* & headers following LRH */
        ib_lid_t        DLID;           /* dest port and path on subnet */
        uint16_t        PktLen;         /* size of packet in four-byte words */
        ib_lid_t        SLID;           /* source port on subnet */
} ib_lrh_hdr_t;

/* defines and masks that go with local routing header */
#define IB_LRH_VL_MASK                          0xF0
#define IB_LRH_VERSION_MASK                     0x0F
#define IB_LRH_SL_MASK                          0xF0
#define IB_LRH_NEXT_HDR_MASK                    0x03
#define IB_LRH_NEXT_HDR_RWH                     0x00
#define IB_LRH_NEXT_HDR_IPV6                    0x01
#define IB_LRH_NEXT_HDR_BTH                     0x02
#define IB_LRH_NEXT_HDR_GRH                     0x03
#define IB_LRH_PACKET_LENGTH_MASK               0x07FF

typedef struct _ib_grh_t {
        uint32_t        IPVer_TC_Flow;  /* version, traffic class & */
                                        /* flow label of the packet */
        uint16_t        PayLen;         /* len of the pkt following the GRH */
        uint8_t         NxtHdr;         /* Header following the GRH */
        uint8_t         HopLmt;         /* max hops the pkt can take */
        ib_gid_t        SGID;           /* GID of the source port */
        ib_gid_t        DGID;           /* GID of the consuming port */
} ib_grh_t;

/* defines and masks that go with global route header */
#define IB_GRH_IPVER_MASK                       0xF0000000
#define IB_GRH_TCLASS_MASK                      0x0FF00000
#define IB_GRH_FLOW_LABEL_MASK                  0x000FFFFF
#define IB_GRH_NEXT_HDR_BTH                     0x1B

typedef struct _ib_bth_hdr_t {
        uint8_t         OpCode;                         /* iba packet type */
        uint8_t         SE_M_PadCnt_TVer; /* responder should generate event */
                                /* & migration state & payload pad count */
                                /* & version of ibta transport headers */
        uint16_t        P_Key;          /* logical partition assoc with pkt */
        uint32_t        Reserved_DestQP; /* queue pair of dest */
        uint32_t        A_PSN;          /* responder should generate ack & */
                                /* packet sequence number */
} ib_bth_hdr_t;

/* defines and masks that go with base transport header */
#define IB_BTH_SOLICITED_EVENT_MASK             0x80
#define IB_BTH_MIG_REQ_MASK                     0x40
#define IB_BTH_PAD_CNT_MASK                     0x30
#define IB_BTH_TVER_MASK                        0x0F
#define IB_BTH_DEST_QP_MASK                     0x00FFFFFF
#define IB_BTH_ACK_REQ_MASK                     0x80000000
#define IB_BTH_PSN_MASK                         0x00FFFFFF

typedef struct _ib_deth_hdr_t {
        uint32_t        Q_Key;          /* queue key */
        uint32_t        Reserved_SrcQP; /* queue pair of the source */
} ib_deth_hdr_t;

#define IB_DETH_SRC_QP_MASK                     0x00FFFFFF

/* defines and masks that go with datagram extended transport header */
#define IB_DETH_SRC_QP_MASK                     0x00FFFFFF

#ifdef __cplusplus
}
#endif

#endif /* _SYS_IB_IB_PKT_HDRS_H */