text: /*
  
   * 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 Voltaire Corporation.  All rights reserved.
   * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
   * Copyright (c) 2005, 2006, 2007 Cisco Systems.  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.
   Z
   */
  #if !defined(IB_VERBS_H)
  #define IB_VERBS_H
  
  #include <linux/types.h>
  #include <linux/errno.h>
  /*
   #include <linux/device.h>
   #include <linux/mm.h>
   #include <linux/dma-mapping.h>
   #include <linux/kref.h>
   #include <linux/list.h>
   #include <linux/rwsem.h>
   #include <linux/scatterlist.h>
   #include <linux/workqueue.h>
   */
  #include <asm/uaccess.h>
  
  #include <linux/rbtree.h>
  /*
   #include <linux/mutex.h>
   */
  #include <barrelfish/barrelfish.h>
  
  #include <linux/list.h>
  
  /*#include <rdma/ib_mad.h>*/
  /*
   extern struct workqueue_struct *ib_wq;
   */
  union ib_gid {
  	u8 raw[16];
  	struct {
  		__be64 subnet_prefix;
  		__be64 interface_id;
  	} global;
  };
  
  enum rdma_node_type {
  	/*IB values map to NodeInfo:NodeType.*/
  	RDMA_NODE_IB_CA = 1,
  	RDMA_NODE_IB_SWITCH,
  	RDMA_NODE_IB_ROUTER,
  	RDMA_NODE_RNIC
  };
  
  enum rdma_transport_type {
  	RDMA_TRANSPORT_IB, RDMA_TRANSPORT_IWARP
  };
  
  enum rdma_transport_type
  rdma_node_get_transport(enum rdma_node_type node_type);
  
  enum rdma_link_layer {
  	IB_LINK_LAYER_UNSPECIFIED, IB_LINK_LAYER_INFINIBAND, IB_LINK_LAYER_ETHERNET,
  };
  
  enum ib_device_cap_flags {
  	IB_DEVICE_RESIZE_MAX_WR = 1,
  	IB_DEVICE_BAD_PKEY_CNTR = (1 << 1),
  	IB_DEVICE_BAD_QKEY_CNTR = (1 << 2),
  	IB_DEVICE_RAW_MULTI = (1 << 3),
  	IB_DEVICE_AUTO_PATH_MIG = (1 << 4),
  	IB_DEVICE_CHANGE_PHY_PORT = (1 << 5),
  	IB_DEVICE_UD_AV_PORT_ENFORCE = (1 << 6),
  	IB_DEVICE_CURR_QP_STATE_MOD = (1 << 7),
  	IB_DEVICE_SHUTDOWN_PORT = (1 << 8),
  	IB_DEVICE_INIT_TYPE = (1 << 9),
  	IB_DEVICE_PORT_ACTIVE_EVENT = (1 << 10),
  	IB_DEVICE_SYS_IMAGE_GUID = (1 << 11),
  	IB_DEVICE_RC_RNR_NAK_GEN = (1 << 12),
  	IB_DEVICE_SRQ_RESIZE = (1 << 13),
  	IB_DEVICE_N_NOTIFY_CQ = (1 << 14),
  	IB_DEVICE_LOCAL_DMA_LKEY = (1 << 15),
  	IB_DEVICE_RESERVED = (1 << 16), /*old SEND_W_INV*/
  	IB_DEVICE_MEM_WINDOW = (1 << 17),
  
  	/** Devices should set IB_DEVICE_UD_IP_SUM if they support
  	 * insertion of UDP and TCP checksum on outgoing UD IPoIB
  	 * messages and can verify the validity of checksum for
  	 * incoming messages.  Setting this flag implies that the
  	 * IPoIB driver may set NETIF_F_IP_CSUM for datagram mode.*/
  
  	IB_DEVICE_UD_IP_CSUM = (1 << 18),
  	IB_DEVICE_UD_TSO = (1 << 19),
  	IB_DEVICE_XRC = (1 << 20),
  	IB_DEVICE_MEM_MGT_EXTENSIONS = (1 << 21),
  	IB_DEVICE_BLOCK_MULTICAST_LOOPBACK = (1 << 22),
  	IB_DEVICE_MR_ALLOCATE = (1 << 23),
  	IB_DEVICE_SHARED_MR = (1 << 24),
  	IB_DEVICE_QPG = (1 << 25),
  	IB_DEVICE_UD_RSS = (1 << 26),
  	IB_DEVICE_UD_TSS = (1 << 27)
  };
  
  enum ib_atomic_cap {
  	IB_ATOMIC_NONE, IB_ATOMIC_HCA, IB_ATOMIC_GLOB
  };
  
  struct ib_device_attr {
  	u64 fw_ver;
  	__be64 sys_image_guid;
  	u64 max_mr_size;
  	u64 page_size_cap;
  	u32 vendor_id;
  	u32 vendor_part_id;
  	u32 hw_ver;
  	int max_qp;
  	int max_qp_wr;
  	int device_cap_flags;
  	int max_sge;
  	int max_sge_rd;
  	int max_cq;
  	int max_cqe;
  	int max_mr;
  	int max_pd;
  	int max_qp_rd_atom;
  	int max_ee_rd_atom;
  	int max_res_rd_atom;
  	int max_qp_init_rd_atom;
  	int max_ee_init_rd_atom;
  	enum ib_atomic_cap atomic_cap;
  	enum ib_atomic_cap masked_atomic_cap;
  	int max_ee;
  	int max_rdd;
  	int max_mw;
  	int max_raw_ipv6_qp;
  	int max_raw_ethy_qp;
  	int max_mcast_grp;
  	int max_mcast_qp_attach;
  	int max_total_mcast_qp_attach;
  	int max_ah;
  	int max_fmr;
  	int max_map_per_fmr;
  	int max_srq;
  	int max_srq_wr;
  	int max_srq_sge;
  	unsigned int max_fast_reg_page_list_len;
  	int max_rss_tbl_sz;
  	u16 max_pkeys;
  	u8 local_ca_ack_delay;
  };
  
  enum ib_mtu {
  	IB_MTU_256 = 1,
  	IB_MTU_512 = 2,
  	IB_MTU_1024 = 3,
  	IB_MTU_2048 = 4,
  	IB_MTU_4096 = 5
  };
  
  static inline int ib_mtu_enum_to_int(enum ib_mtu mtu) {
  	switch (mtu) {
  	case IB_MTU_256:
  		return 256;
  	case IB_MTU_512:
  		return 512;
  	case IB_MTU_1024:
  		return 1024;
  	case IB_MTU_2048:
  		return 2048;
  	case IB_MTU_4096:
  		return 4096;
  	default:
  		return -1;
  	}
  }
  
  enum ib_port_state {
  	IB_PORT_NOP = 0,
  	IB_PORT_DOWN = 1,
  	IB_PORT_INIT = 2,
  	IB_PORT_ARMED = 3,
  	IB_PORT_ACTIVE = 4,
  	IB_PORT_ACTIVE_DEFER = 5
  };
  
  enum ib_port_cap_flags {
  	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_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
  };
  
  enum ib_port_width {
  	IB_WIDTH_1X = 1, IB_WIDTH_4X = 2, IB_WIDTH_8X = 4, IB_WIDTH_12X = 8
  };
  
  static inline int ib_width_enum_to_int(enum ib_port_width width) {
  	switch (width) {
  	case IB_WIDTH_1X:
  		return 1;
  	case IB_WIDTH_4X:
  		return 4;
  	case IB_WIDTH_8X:
  		return 8;
  	case IB_WIDTH_12X:
  		return 12;
  	default:
  		return -1;
  	}
  }
  
  enum ib_port_speed {
  	IB_SPEED_SDR = 1,
  	IB_SPEED_DDR = 2,
  	IB_SPEED_QDR = 4,
  	IB_SPEED_FDR10 = 8,
  	IB_SPEED_FDR = 16,
  	IB_SPEED_EDR = 32
  };
  
  struct ib_protocol_stats {
  /*TBD...*/
  };
  
  struct iw_protocol_stats {
  	u64 ipInReceives;
  	u64 ipInHdrErrors;
  	u64 ipInTooBigErrors;
  	u64 ipInNoRoutes;
  	u64 ipInAddrErrors;
  	u64 ipInUnknownProtos;
  	u64 ipInTruncatedPkts;
  	u64 ipInDiscards;
  	u64 ipInDelivers;
  	u64 ipOutForwDatagrams;
  	u64 ipOutRequests;
  	u64 ipOutDiscards;
  	u64 ipOutNoRoutes;
  	u64 ipReasmTimeout;
  	u64 ipReasmReqds;
  	u64 ipReasmOKs;
  	u64 ipReasmFails;
  	u64 ipFragOKs;
  	u64 ipFragFails;
  	u64 ipFragCreates;
  	u64 ipInMcastPkts;
  	u64 ipOutMcastPkts;
  	u64 ipInBcastPkts;
  	u64 ipOutBcastPkts;
  
  	u64 tcpRtoAlgorithm;
  	u64 tcpRtoMin;
  	u64 tcpRtoMax;
  	u64 tcpMaxConn;
  	u64 tcpActiveOpens;
  	u64 tcpPassiveOpens;
  	u64 tcpAttemptFails;
  	u64 tcpEstabResets;
  	u64 tcpCurrEstab;
  	u64 tcpInSegs;
  	u64 tcpOutSegs;
  	u64 tcpRetransSegs;
  	u64 tcpInErrs;
  	u64 tcpOutRsts;
  };
  /*
   union rdma_protocol_stats {
   struct ib_protocol_stats ib;
   struct iw_protocol_stats iw;
   };
   */
  struct ib_port_attr {
  	enum ib_port_state state;
  	enum ib_mtu max_mtu;
  	enum ib_mtu active_mtu;
  	int gid_tbl_len;
  	u32 port_cap_flags;
  	u32 max_msg_sz;
  	u32 bad_pkey_cntr;
  	u32 qkey_viol_cntr;
  	u16 pkey_tbl_len;
  	u16 lid;
  	u16 sm_lid;
  	u8 lmc;
  	u8 max_vl_num;
  	u8 sm_sl;
  	u8 subnet_timeout;
  	u8 init_type_reply;
  	u8 active_width;
  	u8 active_speed;
  	u8 phys_state;
  	enum rdma_link_layer link_layer;
  };
  /*
   enum ib_device_modify_flags {
   IB_DEVICE_MODIFY_SYS_IMAGE_GUID = 1 << 0, IB_DEVICE_MODIFY_NODE_DESC = 1
   << 1
   };
  
   struct ib_device_modify {
   u64 sys_image_guid;
   char node_desc[64];
   };
  
   enum ib_port_modify_flags {
   IB_PORT_SHUTDOWN = 1,
   IB_PORT_INIT_TYPE = (1 << 2),
   IB_PORT_RESET_QKEY_CNTR = (1 << 3)
   };
  
   struct ib_port_modify {
   u32 set_port_cap_mask;
   u32 clr_port_cap_mask;
   u8 init_type;
   };
   */
  enum ib_event_type {
  	IB_EVENT_CQ_ERR,
  	IB_EVENT_QP_FATAL,
  	IB_EVENT_QP_REQ_ERR,
  	IB_EVENT_QP_ACCESS_ERR,
  	IB_EVENT_COMM_EST,
  	IB_EVENT_SQ_DRAINED,
  	IB_EVENT_PATH_MIG,
  	IB_EVENT_PATH_MIG_ERR,
  	IB_EVENT_DEVICE_FATAL,
  	IB_EVENT_PORT_ACTIVE,
  	IB_EVENT_PORT_ERR,
  	IB_EVENT_LID_CHANGE,
  	IB_EVENT_PKEY_CHANGE,
  	IB_EVENT_SM_CHANGE,
  	IB_EVENT_SRQ_ERR,
  	IB_EVENT_SRQ_LIMIT_REACHED,
  	IB_EVENT_QP_LAST_WQE_REACHED,
  	IB_EVENT_CLIENT_REREGISTER,
  	IB_EVENT_GID_CHANGE,
  };
  
  enum ib_event_flags {
  	IB_XRC_QP_EVENT_FLAG = 0x80000000,
  };
  
  struct ib_event {
  	struct ib_device *device;
  	union {
  		struct ib_cq *cq;
  		struct ib_qp *qp;
  		struct ib_srq *srq;
  		u8 port_num;
  		u32 xrc_qp_num;
  	} element;
  	enum ib_event_type event;
  };
  
  struct ib_event_handler {
  	struct ib_device *device;
  	void (*handler)(struct ib_event_handler *, struct ib_event *);
  	struct list_head list;
  };
  /*
   #define INIT_IB_EVENT_HANDLER(_ptr, _device, _handler)		\
  	do {							\
  		(_ptr)->device  = _device;			\
  		(_ptr)->handler = _handler;			\
  		INIT_LIST_HEAD(&(_ptr)->list);			\
  	} while (0)
   */
  struct ib_global_route {
  	union ib_gid dgid;
  	u32 flow_label;
  	u8 sgid_index;
  	u8 hop_limit;
  	u8 traffic_class;
  };
  
  struct ib_grh {
  	__be32 version_tclass_flow;
  	__be16 paylen;
  	u8 next_hdr;
  	u8 hop_limit;
  	union ib_gid sgid;
  	union ib_gid dgid;
  };
  
  enum {
  	IB_MULTICAST_QPN = 0xffffff
  };
  
  #define IB_LID_PERMISSIVE	cpu_to_be16(0xFFFF)
  
  enum ib_ah_flags {
  	IB_AH_GRH = 1
  };
  
  enum ib_rate {
  	IB_RATE_PORT_CURRENT = 0,
  	IB_RATE_2_5_GBPS = 2,
  	IB_RATE_5_GBPS = 5,
  	IB_RATE_10_GBPS = 3,
  	IB_RATE_20_GBPS = 6,
  	IB_RATE_30_GBPS = 4,
  	IB_RATE_40_GBPS = 7,
  	IB_RATE_60_GBPS = 8,
  	IB_RATE_80_GBPS = 9,
  	IB_RATE_120_GBPS = 10,
  	IB_RATE_14_GBPS = 11,
  	IB_RATE_56_GBPS = 12,
  	IB_RATE_112_GBPS = 13,
  	IB_RATE_168_GBPS = 14,
  	IB_RATE_25_GBPS = 15,
  	IB_RATE_100_GBPS = 16,
  	IB_RATE_200_GBPS = 17,
  	IB_RATE_300_GBPS = 18
  };
  /*
   *
   * ib_rate_to_mult - Convert the IB rate enum to a multiple of the
   * base rate of 2.5 Gbit/sec.  For example, IB_RATE_5_GBPS will be
   * converted to 2, since 5 Gbit/sec is 2 * 2.5 Gbit/sec.
   * @rate: rate to convert.
  
   int ib_rate_to_mult(enum ib_rate rate) __attribute_const__;
  
   *
   * ib_rate_to_mbps - Convert the IB rate enum to Mbps.
   * For example, IB_RATE_2_5_GBPS will be converted to 2500.
   * @rate: rate to convert.
  
   int ib_rate_to_mbps(enum ib_rate rate) __attribute_const__;
  
   *
   * mult_to_ib_rate - Convert a multiple of 2.5 Gbit/sec to an IB rate
   * enum.
   * @mult: multiple to convert.
  
   enum ib_rate mult_to_ib_rate(int mult) __attribute_const__;
   */
  struct ib_ah_attr {
  	struct ib_global_route grh;
  	u16 dlid;
  	u8 sl;
  	u8 src_path_bits;
  	u8 static_rate;
  	u8 ah_flags;
  	u8 port_num;
  };
  
  enum ib_wc_status {
  	IB_WC_SUCCESS,
  	IB_WC_LOC_LEN_ERR,
  	IB_WC_LOC_QP_OP_ERR,
  	IB_WC_LOC_EEC_OP_ERR,
  	IB_WC_LOC_PROT_ERR,
  	IB_WC_WR_FLUSH_ERR,
  	IB_WC_MW_BIND_ERR,
  	IB_WC_BAD_RESP_ERR,
  	IB_WC_LOC_ACCESS_ERR,
  	IB_WC_REM_INV_REQ_ERR,
  	IB_WC_REM_ACCESS_ERR,
  	IB_WC_REM_OP_ERR,
  	IB_WC_RETRY_EXC_ERR,
  	IB_WC_RNR_RETRY_EXC_ERR,
  	IB_WC_LOC_RDD_VIOL_ERR,
  	IB_WC_REM_INV_RD_REQ_ERR,
  	IB_WC_REM_ABORT_ERR,
  	IB_WC_INV_EECN_ERR,
  	IB_WC_INV_EEC_STATE_ERR,
  	IB_WC_FATAL_ERR,
  	IB_WC_RESP_TIMEOUT_ERR,
  	IB_WC_GENERAL_ERR
  };
  
  enum ib_wc_opcode {
  	IB_WC_SEND,
  	IB_WC_RDMA_WRITE,
  	IB_WC_RDMA_READ,
  	IB_WC_COMP_SWAP,
  	IB_WC_FETCH_ADD,
  	IB_WC_BIND_MW,
  	IB_WC_LSO,
  	IB_WC_LOCAL_INV,
  	IB_WC_FAST_REG_MR,
  	IB_WC_MASKED_COMP_SWAP,
  	IB_WC_MASKED_FETCH_ADD,
  
  	/** Set value of IB_WC_RECV so consumers can test if a completion is a
  	 * receive by testing (opcode & IB_WC_RECV).*/
  
  	IB_WC_RECV = 1 << 7,
  	IB_WC_RECV_RDMA_WITH_IMM
  };
  
  enum ib_wc_flags {
  	IB_WC_GRH = 1,
  	IB_WC_WITH_IMM = (1 << 1),
  	IB_WC_WITH_INVALIDATE = (1 << 2),
  	IB_WC_IP_CSUM_OK = (1 << 3),
  };
  
  struct ib_wc {
  	u64 wr_id;
  	enum ib_wc_status status;
  	enum ib_wc_opcode opcode;
  	u32 vendor_err;
  	u32 byte_len;
  	struct ib_qp *qp;
  	union {
  		__be32 imm_data;
  		u32 invalidate_rkey;
  	} ex;
  	u32 src_qp;
  	int wc_flags;
  	u16 pkey_index;
  	u16 slid;
  	u8 sl;
  	u8 dlid_path_bits;
  	u8 port_num; /*valid only for DR SMPs on switches*/
  	int csum_ok;
  };
  
  enum ib_cq_notify_flags {
  	IB_CQ_SOLICITED = 1 << 0,
  	IB_CQ_NEXT_COMP = 1 << 1,
  	IB_CQ_SOLICITED_MASK = IB_CQ_SOLICITED | IB_CQ_NEXT_COMP,
  	IB_CQ_REPORT_MISSED_EVENTS = 1 << 2,
  };
  
  enum ib_srq_type {
  	IB_SRQT_BASIC, IB_SRQT_XRC
  };
  
  enum ib_srq_attr_mask {
  	IB_SRQ_MAX_WR = 1 << 0, IB_SRQ_LIMIT = 1 << 1,
  };
  
  struct ib_srq_attr {
  	u32 max_wr;
  	u32 max_sge;
  	u32 srq_limit;
  };
  /*
   struct ib_srq_init_attr {
   void (*event_handler)(struct ib_event *, void *);
   void *srq_context;
   struct ib_srq_attr attr;
   enum ib_srq_type srq_type;
  
   union {
   struct {
   struct ib_xrcd *xrcd;
   struct ib_cq *cq;
   } xrc;
   } ext;
   };
   */
  struct ib_qp_cap {
  	u32 max_send_wr;
  	u32 max_recv_wr;
  	u32 max_send_sge;
  	u32 max_recv_sge;
  	u32 max_inline_data;
  	u32 qpg_tss_mask_sz;
  };
  
  enum ib_sig_type {
  	IB_SIGNAL_ALL_WR, IB_SIGNAL_REQ_WR
  };
  
  enum ib_qp_type {
  
  	/** IB_QPT_SMI and IB_QPT_GSI have to be the first two entries
  	 * here (and in that order) since the MAD layer uses them as
  	 * indices into a 2-entry table.*/
  
  	IB_QPT_SMI,
  	IB_QPT_GSI,
  
  	IB_QPT_RC,
  	IB_QPT_UC,
  	IB_QPT_UD,
  	IB_QPT_XRC,
  	IB_QPT_RAW_IPV6,
  	IB_QPT_RAW_ETHERTYPE,
  	IB_QPT_RAW_PACKET = 8,
  	IB_QPT_XRC_INI = 9,
  	IB_QPT_XRC_TGT,
  	IB_QPT_MAX,
  };
  
  enum ib_qp_create_flags {
  	IB_QP_CREATE_IPOIB_UD_LSO = 1 << 0,
  	IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK = 1 << 1,
  	IB_QP_CREATE_NETIF_QP = 1 << 2,
  	/*reserve bits 26-31 for low level drivers' internal use*/
  	IB_QP_CREATE_RESERVED_START = 1 << 26,
  	IB_QP_CREATE_RESERVED_END = 1 << 31,
  };
  
  enum ib_qpg_type {
  	IB_QPG_NONE = 0,
  	IB_QPG_PARENT = (1 << 0),
  	IB_QPG_CHILD_RX = (1 << 1),
  	IB_QPG_CHILD_TX = (1 << 2)
  };
  
  struct ib_qpg_init_attrib {
  	u32 tss_child_count;
  	u32 rss_child_count;
  };
  
  struct ib_qp_init_attr {
  	void (*event_handler)(struct ib_event *, void *);
  	void *qp_context;
  	struct ib_cq *send_cq;
  	struct ib_cq *recv_cq;
  	struct ib_srq *srq;
  	struct ib_xrcd *xrcd; /*XRC TGT QPs only*/
  	struct ib_qp_cap cap;
  	union {
  		struct ib_qp *qpg_parent; /*see qpg_type*/
  		struct ib_qpg_init_attrib parent_attrib;
  	} pp;
  	enum ib_sig_type sq_sig_type;
  	enum ib_qp_type qp_type;
  	enum ib_qp_create_flags create_flags;
  	enum ib_qpg_type qpg_type;
  	u8 port_num; /*special QP types only*/
  };
  /*
   struct ib_qp_open_attr {
   void (*event_handler)(struct ib_event *, void *);
   void *qp_context;
   u32 qp_num;
   enum ib_qp_type qp_type;
   };
   */
  enum ib_rnr_timeout {
  	IB_RNR_TIMER_655_36 = 0,
  	IB_RNR_TIMER_000_01 = 1,
  	IB_RNR_TIMER_000_02 = 2,
  	IB_RNR_TIMER_000_03 = 3,
  	IB_RNR_TIMER_000_04 = 4,
  	IB_RNR_TIMER_000_06 = 5,
  	IB_RNR_TIMER_000_08 = 6,
  	IB_RNR_TIMER_000_12 = 7,
  	IB_RNR_TIMER_000_16 = 8,
  	IB_RNR_TIMER_000_24 = 9,
  	IB_RNR_TIMER_000_32 = 10,
  	IB_RNR_TIMER_000_48 = 11,
  	IB_RNR_TIMER_000_64 = 12,
  	IB_RNR_TIMER_000_96 = 13,
  	IB_RNR_TIMER_001_28 = 14,
  	IB_RNR_TIMER_001_92 = 15,
  	IB_RNR_TIMER_002_56 = 16,
  	IB_RNR_TIMER_003_84 = 17,
  	IB_RNR_TIMER_005_12 = 18,
  	IB_RNR_TIMER_007_68 = 19,
  	IB_RNR_TIMER_010_24 = 20,
  	IB_RNR_TIMER_015_36 = 21,
  	IB_RNR_TIMER_020_48 = 22,
  	IB_RNR_TIMER_030_72 = 23,
  	IB_RNR_TIMER_040_96 = 24,
  	IB_RNR_TIMER_061_44 = 25,
  	IB_RNR_TIMER_081_92 = 26,
  	IB_RNR_TIMER_122_88 = 27,
  	IB_RNR_TIMER_163_84 = 28,
  	IB_RNR_TIMER_245_76 = 29,
  	IB_RNR_TIMER_327_68 = 30,
  	IB_RNR_TIMER_491_52 = 31
  };
  
  enum ib_qp_attr_mask {
  	IB_QP_STATE = 1,
  	IB_QP_CUR_STATE = (1 << 1),
  	IB_QP_EN_SQD_ASYNC_NOTIFY = (1 << 2),
  	IB_QP_ACCESS_FLAGS = (1 << 3),
  	IB_QP_PKEY_INDEX = (1 << 4),
  	IB_QP_PORT = (1 << 5),
  	IB_QP_QKEY = (1 << 6),
  	IB_QP_AV = (1 << 7),
  	IB_QP_PATH_MTU = (1 << 8),
  	IB_QP_TIMEOUT = (1 << 9),
  	IB_QP_RETRY_CNT = (1 << 10),
  	IB_QP_RNR_RETRY = (1 << 11),
  	IB_QP_RQ_PSN = (1 << 12),
  	IB_QP_MAX_QP_RD_ATOMIC = (1 << 13),
  	IB_QP_ALT_PATH = (1 << 14),
  	IB_QP_MIN_RNR_TIMER = (1 << 15),
  	IB_QP_SQ_PSN = (1 << 16),
  	IB_QP_MAX_DEST_RD_ATOMIC = (1 << 17),
  	IB_QP_PATH_MIG_STATE = (1 << 18),
  	IB_QP_CAP = (1 << 19),
  	IB_QP_DEST_QPN = (1 << 20),
  	IB_QP_GROUP_RSS = (1 << 21)
  };
  
  enum ib_qp_state {
  	IB_QPS_RESET,
  	IB_QPS_INIT,
  	IB_QPS_RTR,
  	IB_QPS_RTS,
  	IB_QPS_SQD,
  	IB_QPS_SQE,
  	IB_QPS_ERR
  };
  
  enum ib_mig_state {
  	IB_MIG_MIGRATED, IB_MIG_REARM, IB_MIG_ARMED
  };
  
  struct ib_qp_attr {
  	enum ib_qp_state qp_state;
  	enum ib_qp_state cur_qp_state;
  	enum ib_mtu path_mtu;
  	enum ib_mig_state path_mig_state;
  	u32 qkey;
  	u32 rq_psn;
  	u32 sq_psn;
  	u32 dest_qp_num;
  	int qp_access_flags;
  	struct ib_qp_cap cap;
  	struct ib_ah_attr ah_attr;
  	struct ib_ah_attr alt_ah_attr;
  	u16 pkey_index;
  	u16 alt_pkey_index;
  	u8 en_sqd_async_notify;
  	u8 sq_draining;
  	u8 max_rd_atomic;
  	u8 max_dest_rd_atomic;
  	u8 min_rnr_timer;
  	u8 port_num;
  	u8 timeout;
  	u8 retry_cnt;
  	u8 rnr_retry;
  	u8 alt_port_num;
  	u8 alt_timeout;
  };
  
  enum ib_wr_opcode {
  	IB_WR_RDMA_WRITE,
  	IB_WR_RDMA_WRITE_WITH_IMM,
  	IB_WR_SEND,
  	IB_WR_SEND_WITH_IMM,
  	IB_WR_RDMA_READ,
  	IB_WR_ATOMIC_CMP_AND_SWP,
  	IB_WR_ATOMIC_FETCH_AND_ADD,
  	IB_WR_LSO,
  	IB_WR_BIG_LSO,
  	IB_WR_SEND_WITH_INV,
  	IB_WR_RDMA_READ_WITH_INV,
  	IB_WR_LOCAL_INV,
  	IB_WR_FAST_REG_MR,
  	IB_WR_MASKED_ATOMIC_CMP_AND_SWP,
  	IB_WR_MASKED_ATOMIC_FETCH_AND_ADD,
  };
  
  enum ib_send_flags {
  	IB_SEND_FENCE = 1,
  	IB_SEND_SIGNALED = (1 << 1),
  	IB_SEND_SOLICITED = (1 << 2),
  	IB_SEND_INLINE = (1 << 3),
  	IB_SEND_IP_CSUM = (1 << 4)
  };
  
  enum ib_flow_types {
  	IB_FLOW_ETH = 0,
  	IB_FLOW_IB_UC = 1,
  	IB_FLOW_IB_MC_IPV4 = 2,
  	IB_FLOW_IB_MC_IPV6 = 3
  };
  
  enum {
  	IB_FLOW_L4_NONE = 0,
  	IB_FLOW_L4_OTHER = 3,
  	IB_FLOW_L4_UDP = 5,
  	IB_FLOW_L4_TCP = 6
  };
  
  struct ib_sge {
  	u64 addr;
  	u32 length;
  	u32 lkey;
  };
  
  struct ib_fast_reg_page_list {
  	struct ib_device *device;
  	u64 *page_list;
  	unsigned int max_page_list_len;
  };
  
  struct ib_send_wr {
  	struct ib_send_wr *next;
  	u64 wr_id;
  	struct ib_sge *sg_list;
  	int num_sge;
  	enum ib_wr_opcode opcode;
  	int send_flags;
  	union {
  		__be32 imm_data;
  		u32 invalidate_rkey;
  	} ex;
  	union {
  		struct {
  			u64 remote_addr;
  			u32 rkey;
  		} rdma;
  		struct {
  			u64 remote_addr;
  			u64 compare_add;
  			u64 swap;
  			u64 compare_add_mask;
  			u64 swap_mask;
  			u32 rkey;
  		} atomic;
  		struct {
  			struct ib_ah *ah;
  			void *header;
  			int hlen;
  			int mss;
  			u32 remote_qpn;
  			u32 remote_qkey;
  			u16 pkey_index; /* valid for GSI only*/
  			u8 port_num; /*valid for DR SMPs on switch only*/
  		} ud;
  		struct {
  			u64 iova_start;
  			struct ib_fast_reg_page_list *page_list;
  			unsigned int page_shift;
  			unsigned int page_list_len;
  			u32 length;
  			int access_flags;
  			u32 rkey;
  		} fast_reg;
  		struct {
  			struct ib_unpacked_lrh *lrh;
  			u32 eth_type;
  			u8 static_rate;
  		} raw_ety;
  	} wr;
  	u32 xrc_remote_srq_num; /*XRC TGT QPs only*/
  };
  
  struct ib_recv_wr {
  	struct ib_recv_wr *next;
  	u64 wr_id;
  	struct ib_sge *sg_list;
  	int num_sge;
  };
  
  enum ib_access_flags {
  	IB_ACCESS_LOCAL_WRITE = 1,
  	IB_ACCESS_REMOTE_WRITE = (1 << 1),
  	IB_ACCESS_REMOTE_READ = (1 << 2),
  	IB_ACCESS_REMOTE_ATOMIC = (1 << 3),
  	IB_ACCESS_MW_BIND = (1 << 4),
  	IB_ACCESS_ALLOCATE_MR = (1 << 5),
  	IB_ACCESS_SHARED_MR_USER_READ = (1 << 6),
  	IB_ACCESS_SHARED_MR_USER_WRITE = (1 << 7),
  	IB_ACCESS_SHARED_MR_GROUP_READ = (1 << 8),
  	IB_ACCESS_SHARED_MR_GROUP_WRITE = (1 << 9),
  	IB_ACCESS_SHARED_MR_OTHER_READ = (1 << 10),
  	IB_ACCESS_SHARED_MR_OTHER_WRITE = (1 << 11)
  };
  /*
   struct ib_phys_buf {
   u64 addr;
   u64 size;
   };
  
   struct ib_mr_attr {
   struct ib_pd *pd;
   u64 device_virt_addr;
   u64 size;
   int mr_access_flags;
   u32 lkey;
   u32 rkey;
   };
  
   enum ib_mr_rereg_flags {
   IB_MR_REREG_TRANS = 1, IB_MR_REREG_PD = (1 << 1), IB_MR_REREG_ACCESS = (1
   << 2)
   };
  
   struct ib_mw_bind {
   struct ib_mr *mr;
   u64 wr_id;
   u64 addr;
   u32 length;
   int send_flags;
   int mw_access_flags;
   };
  
   struct ib_fmr_attr {
   int max_pages;
   int max_maps;
   u8 page_shift;
   };
   */
  struct ib_ucontext {
  	struct ib_device *device;
  	struct list_head pd_list;
  	struct list_head mr_list;
  	struct list_head mw_list;
  	struct list_head cq_list;
  	struct list_head qp_list;
  	struct list_head srq_list;
  	struct list_head ah_list;
  	struct list_head xrcd_list;
  	int closing;
  };
  
  struct ib_uobject {
  	u64 user_handle; /*handle given to us by userspace*/
  	struct ib_ucontext *context; /*associated user context*/
  	void *object; /*containing object*/
  	struct list_head list; /*link to context's list*/
  	int id; /*index into kernel idr*/
  	/*struct kref ref;*/
  	/*struct rw_semaphore mutex;*//*protects .live*/
  	int live;
  };
  
  struct ib_udata {
  	void /*__user*/*inbuf;
  	void /*__user*/*outbuf;
  	size_t inlen;
  	size_t outlen;
  };
  /*
   struct ib_uxrc_rcv_object {
   struct list_head list;  link to context's list
   u32 qp_num;
   u32 domain_handle;
   };
   */
  struct ib_pd {
  	struct ib_device *device;
  	struct ib_uobject *uobject;
  /*atomic_t usecnt;  count all resources*/
  };
  
  struct ib_xrcd {
  	struct ib_device *device;
  	struct ib_uobject *uobject;
  	/*atomic_t usecnt;  count all exposed resources*/
  	struct inode *inode;
  	struct rb_node node;
  
  	/*struct mutex tgt_qp_mutex;*/
  	struct list_head tgt_qp_list;
  };
  
  struct ib_ah {
  	struct ib_device *device;
  	struct ib_pd *pd;
  	struct ib_uobject *uobject;
  };
  
  typedef void (*ib_comp_handler)(struct ib_cq *cq, void *cq_context);
  
  struct ib_cq {
  	struct ib_device *device;
  	struct ib_uobject *uobject;
  	ib_comp_handler comp_handler;
  	void (*event_handler)(struct ib_event *, void *);
  	void *cq_context;
  	int cqe;
  /*atomic_t usecnt;  count number of work queues*/
  };
  
  struct ib_srq {
  	struct ib_device *device;
  	struct ib_pd *pd;
  	struct ib_uobject *uobject;
  	void (*event_handler)(struct ib_event *, void *);
  	void *srq_context;
  	enum ib_srq_type srq_type;
  	/*atomic_t usecnt;*/
  
  	union {
  		struct {
  			struct ib_xrcd *xrcd;
  			struct ib_cq *cq;
  			u32 srq_num;
  		} xrc;
  	} ext;
  };
  
  struct ib_qp {
  	struct ib_device *device;
  	struct ib_pd *pd;
  	struct ib_cq *send_cq;
  	struct ib_cq *recv_cq;
  	struct ib_srq *srq;
  	struct ib_xrcd *xrcd; /*XRC TGT QPs only*/
  	struct list_head xrcd_list;
  	/*atomic_t usecnt;*//*count times opened, mcast attaches*/
  	struct list_head open_list;
  	struct ib_qp *real_qp;
  	struct ib_uobject *uobject;
  	void (*event_handler)(struct ib_event *, void *);
  	void *qp_context;
  	u32 qp_num;
  	enum ib_qp_type qp_type;
  	enum ib_qpg_type qpg_type;
  };
  
  struct ib_mr {
  	struct ib_device *device;
  	struct ib_pd *pd;
  	struct ib_uobject *uobject;
  	u32 lkey;
  	u32 rkey;
  /*atomic_t usecnt;  count number of MWs*/
  };
  /*
   struct ib_mw {
   struct ib_device *device;
   struct ib_pd *pd;
   struct ib_uobject *uobject;
   u32 rkey;
   };
  
   struct ib_fmr {
   struct ib_device *device;
   struct ib_pd *pd;
   struct list_head list;
   u32 lkey;
   u32 rkey;
   };
   */
  struct ib_flow_spec {
  	enum ib_flow_types type;
  	union {
  		struct {
  			__be16 ethertype;
  			__be16 vlan;
  			u8 vlan_present;
  			u8 mac[6];
  			u8 port;
  		} eth;
  		struct {
  			__be32 qpn;
  		} ib_uc;
  		struct {
  			u8 mgid[16];
  		} ib_mc;
  	} l2_id;
  	__be32 src_ip;
  	__be32 dst_ip;
  	__be16 src_port;
  	__be16 dst_port;
  	u8 l4_protocol;
  	u8 block_mc_loopback;
  	u8 rule_type;
  };
  
  struct ib_mad;
  struct ib_grh;
  
  enum ib_process_mad_flags {
  	IB_MAD_IGNORE_MKEY = 1,
  	IB_MAD_IGNORE_BKEY = 2,
  	IB_MAD_IGNORE_ALL = IB_MAD_IGNORE_MKEY | IB_MAD_IGNORE_BKEY
  };
  
  enum ib_mad_result {
  	IB_MAD_RESULT_FAILURE = 0, /*(!SUCCESS is the important flag)*/
  	IB_MAD_RESULT_SUCCESS = 1 << 0, /* MAD was successfully processed*/
  	IB_MAD_RESULT_REPLY = 1 << 1, /* Reply packet needs to be sent*/
  	IB_MAD_RESULT_CONSUMED = 1 << 2 /*Packet consumed: stop processing*/
  };
  
  #define IB_DEVICE_NAME_MAX 64
  
  struct ib_cache {
  	/*rwlock_t lock;*/
  	struct ib_event_handler event_handler;
  	struct ib_pkey_cache **pkey_cache;
  	struct ib_gid_cache **gid_cache;
  	u8 *lmc_cache;
  };
  /*
   struct ib_dma_mapping_ops {
   int (*mapping_error)(struct ib_device *dev, u64 dma_addr);
   u64 (*map_single)(struct ib_device *dev, void *ptr, size_t size,
   enum dma_data_direction direction);
   void (*unmap_single)(struct ib_device *dev, u64 addr, size_t size,
   enum dma_data_direction direction);
   u64 (*map_page)(struct ib_device *dev, struct page *page,
   unsigned long offset, size_t size,
   enum dma_data_direction direction);
   void (*unmap_page)(struct ib_device *dev, u64 addr, size_t size,
   enum dma_data_direction direction);
   int (*map_sg)(struct ib_device *dev, struct scatterlist *sg, int nents,
   enum dma_data_direction direction);
   void (*unmap_sg)(struct ib_device *dev, struct scatterlist *sg, int nents,
   enum dma_data_direction direction);
   u64 (*dma_address)(struct ib_device *dev, struct scatterlist *sg);
   unsigned int (*dma_len)(struct ib_device *dev, struct scatterlist *sg);
   void (*sync_single_for_cpu)(struct ib_device *dev, u64 dma_handle,
   size_t size, enum dma_data_direction dir);
   void (*sync_single_for_device)(struct ib_device *dev, u64 dma_handle,
   size_t size, enum dma_data_direction dir);
   void *(*alloc_coherent)(struct ib_device *dev, size_t size, u64 *dma_handle,
   gfp_t flag);
   void (*free_coherent)(struct ib_device *dev, size_t size, void *cpu_addr,
   u64 dma_handle);
   };
  
   struct iw_cm_verbs;
   */
  struct ib_device {
  	struct device *dma_device;
  
  	char name[IB_DEVICE_NAME_MAX];
  
  	struct list_head event_handler_list;
  	spinlock_t event_handler_lock;
  
  	spinlock_t client_data_lock;
  	struct list_head core_list;
  	struct list_head client_data_list;
  
  	struct ib_cache cache;
  	int *pkey_tbl_len;
  	int *gid_tbl_len;
  
  	int num_comp_vectors;
  
  	struct iw_cm_verbs *iwcm;
  
  	/*int (*get_protocol_stats)(struct ib_device *device,
  	 union rdma_protocol_stats *stats);
  	 int (*query_device)(struct ib_device *device,
  	 struct ib_device_attr *device_attr);
  	 */
  	int (*query_port)(struct ib_device *device, u8 port_num,
  			struct ib_port_attr *port_attr);
  	enum rdma_link_layer (*get_link_layer)(struct ib_device *device,
  			u8 port_num);
  	int (*query_gid)(struct ib_device *device, u8 port_num, int index,
  			union ib_gid *gid);
  	int (*query_pkey)(struct ib_device *device, u8 port_num, u16 index,
  			u16 *pkey);
  	/*
  	 int (*modify_device)(struct ib_device *device, int device_modify_mask,
  	 struct ib_device_modify *device_modify);
  	 int (*modify_port)(struct ib_device *device, u8 port_num,
  	 int port_modify_mask, struct ib_port_modify *port_modify);
  	 struct ib_ucontext * (*alloc_ucontext)(struct ib_device *device,
  	 struct ib_udata *udata);
  	 int (*dealloc_ucontext)(struct ib_ucontext *context);
  	 int (*mmap)(struct ib_ucontext *context, struct vm_area_struct *vma);
  	 */
  	struct ib_pd * (*alloc_pd)(struct ib_device *device,
  			struct ib_ucontext *context, struct ib_udata *udata);
  	/*
  	 int (*dealloc_pd)(struct ib_pd *pd);
  	 */
  	struct ib_ah * (*create_ah)(struct ib_pd *pd, struct ib_ah_attr *ah_attr);
  	/*
  	 int (*modify_ah)(struct ib_ah *ah, struct ib_ah_attr *ah_attr);
  	 int (*query_ah)(struct ib_ah *ah, struct ib_ah_attr *ah_attr);
  	 */
  	int (*destroy_ah)(struct ib_ah *ah);
  	/*
  	 struct ib_srq * (*create_srq)(struct ib_pd *pd,
  	 struct ib_srq_init_attr *srq_init_attr, struct ib_udata *udata);
  	 int (*modify_srq)(struct ib_srq *srq, struct ib_srq_attr *srq_attr,
  	 enum ib_srq_attr_mask srq_attr_mask, struct ib_udata *udata);
  	 int (*query_srq)(struct ib_srq *srq, struct ib_srq_attr *srq_attr);
  	 int (*destroy_srq)(struct ib_srq *srq);
  	 int (*post_srq_recv)(struct ib_srq *srq, struct ib_recv_wr *recv_wr,
  	 struct ib_recv_wr **bad_recv_wr);
  	 */
  	struct ib_qp * (*create_qp)(struct ib_pd *pd,
  			struct ib_qp_init_attr *qp_init_attr, struct ib_udata *udata);
  	int (*modify_qp)(struct ib_qp *qp, struct ib_qp_attr *qp_attr,
  			int qp_attr_mask, struct ib_udata *udata);
  	/*
  	 int (*query_qp)(struct ib_qp *qp, struct ib_qp_attr *qp_attr,
  	 int qp_attr_mask, struct ib_qp_init_attr *qp_init_attr);
  	 int (*destroy_qp)(struct ib_qp *qp);
  	 */
  	int (*post_send)(struct ib_qp *qp, struct ib_send_wr *send_wr,
  			struct ib_send_wr **bad_send_wr);
  	int (*post_recv)(struct ib_qp *qp, struct ib_recv_wr *recv_wr,
  			struct ib_recv_wr **bad_recv_wr);
  	struct ib_cq * (*create_cq)(struct ib_device *device, int cqe,
  			int comp_vector, struct ib_ucontext *context,
  			struct ib_udata *udata);
  	/*
  	 int (*modify_cq)(struct ib_cq *cq, u16 cq_count, u16 cq_period);
  	 int (*destroy_cq)(struct ib_cq *cq);
  	 int (*resize_cq)(struct ib_cq *cq, int cqe, struct ib_udata *udata);
  	 */
  	int (*poll_cq)(struct ib_cq *cq, int num_entries, struct ib_wc *wc);
  	/*
  	 int (*peek_cq)(struct ib_cq *cq, int wc_cnt);
  	 */
  	int (*req_notify_cq)(struct ib_cq *cq, enum ib_cq_notify_flags flags);
  	/*
  	 int (*req_ncomp_notif)(struct ib_cq *cq, int wc_cnt);
  	 */
  	struct ib_mr * (*get_dma_mr)(struct ib_pd *pd, int mr_access_flags);
  	/*
  	 struct ib_mr * (*reg_phys_mr)(struct ib_pd *pd,
  	 struct ib_phys_buf *phys_buf_array, int num_phys_buf,
  	 int mr_access_flags, u64 *iova_start);
  	 struct ib_mr * (*reg_user_mr)(struct ib_pd *pd, u64 start, u64 length,
  	 u64 virt_addr, int mr_access_flags, struct ib_udata *udata,
  	 int mr_id);
  	 int (*query_mr)(struct ib_mr *mr, struct ib_mr_attr *mr_attr);
  	 int (*dereg_mr)(struct ib_mr *mr);
  	 struct ib_mr * (*alloc_fast_reg_mr)(struct ib_pd *pd, int max_page_list_len);
  	 struct ib_fast_reg_page_list * (*alloc_fast_reg_page_list)(
  	 struct ib_device *device, int page_list_len);
  	 void (*free_fast_reg_page_list)(struct ib_fast_reg_page_list *page_list);
  	 int (*rereg_phys_mr)(struct ib_mr *mr, int mr_rereg_mask, struct ib_pd *pd,
  	 struct ib_phys_buf *phys_buf_array, int num_phys_buf,
  	 int mr_access_flags, u64 *iova_start);
  	 struct ib_mw * (*alloc_mw)(struct ib_pd *pd);
  	 int (*bind_mw)(struct ib_qp *qp, struct ib_mw *mw,
  	 struct ib_mw_bind *mw_bind);
  	 int (*dealloc_mw)(struct ib_mw *mw);
  	 struct ib_fmr * (*alloc_fmr)(struct ib_pd *pd, int mr_access_flags,
  	 struct ib_fmr_attr *fmr_attr);
  	 int (*map_phys_fmr)(struct ib_fmr *fmr, u64 *page_list, int list_len,
  	 u64 iova);
  	 int (*unmap_fmr)(struct list_head *fmr_list);
  	 int (*dealloc_fmr)(struct ib_fmr *fmr);
  	 int (*attach_mcast)(struct ib_qp *qp, union ib_gid *gid, u16 lid);
  	 int (*detach_mcast)(struct ib_qp *qp, union ib_gid *gid, u16 lid);
  	 */
  	int (*process_mad)(struct ib_device *device, int process_mad_flags,
  			u8 port_num, struct ib_wc *in_wc, struct ib_grh *in_grh,
  			struct ib_mad *in_mad, struct ib_mad *out_mad);
  	/*
  	 struct ib_srq * (*create_xrc_srq)(struct ib_pd *pd, struct ib_cq *xrc_cq,
  	 struct ib_xrcd *xrcd, struct ib_srq_init_attr *srq_init_attr,
  	 struct ib_udata *udata);
  	 struct ib_xrcd * (*alloc_xrcd)(struct ib_device *device,
  	 struct ib_ucontext *ucontext, struct ib_udata *udata);
  	 int (*dealloc_xrcd)(struct ib_xrcd *xrcd);
  	 int (*create_xrc_rcv_qp)(struct ib_qp_init_attr *init_attr, u32 *qp_num);
  	 int (*modify_xrc_rcv_qp)(struct ib_xrcd *xrcd, u32 qp_num,
  	 struct ib_qp_attr *attr, int attr_mask);
  	 int (*query_xrc_rcv_qp)(struct ib_xrcd *xrcd, u32 qp_num,
  	 struct ib_qp_attr *attr, int attr_mask,
  	 struct ib_qp_init_attr *init_attr);
  	 int (*reg_xrc_rcv_qp)(struct ib_xrcd *xrcd, void *context, u32 qp_num);
  	 int (*unreg_xrc_rcv_qp)(struct ib_xrcd *xrcd, void *context, u32 qp_num);
  	 int (*attach_flow)(struct ib_qp *qp, struct ib_flow_spec *spec,
  	 int priority);
  	 int (*detach_flow)(struct ib_qp *qp, struct ib_flow_spec *spec,
  	 int priority);
  	 unsigned long (*get_unmapped_area)(struct file *file, unsigned long addr,
  	 unsigned long len, unsigned long pgoff, unsigned long flags);
  	 struct ib_dma_mapping_ops *dma_ops;*/
  
  	/*struct module *owner;
  	 struct device dev;
  	 struct kobject *ports_parent;*/
  	struct list_head port_list;
  
  	enum {
  		IB_DEV_UNINITIALIZED, IB_DEV_REGISTERED, IB_DEV_UNREGISTERED
  	} reg_state;
  
  	int uverbs_abi_ver;
  	u64 uverbs_cmd_mask;
  
  	char node_desc[64];
  	__be64 node_guid;
  	u32 local_dma_lkey;
  	u8 node_type;
  	u8 phys_port_cnt;
  	struct rb_root ib_uverbs_xrcd_table;
  /*struct mutex xrcd_table_mutex;*/
  };
  
  struct ib_client {
  	char *name;
  	void (*add)(struct ib_device *);
  	void (*remove)(struct ib_device *);
  
  	struct list_head list;
  };
  
  struct ib_device *ib_alloc_device(size_t size);
  /*
   void ib_dealloc_device(struct ib_device *device);
  
   int ib_register_device(struct ib_device *device,
   int (*port_callback)(struct ib_device *, u8, struct kobject *));
   void ib_unregister_device(struct ib_device *device);
  
   int ib_register_client(struct ib_client *client);
   void ib_unregister_client(struct ib_client *client);
  
   void *ib_get_client_data(struct ib_device *device, struct ib_client *client);
   void ib_set_client_data(struct ib_device *device, struct ib_client *client,
   void *data);
   */
  static inline int ib_copy_from_udata(void *dest, struct ib_udata *udata,
  		size_t len) {
  	return copy_from_user(dest, udata->inbuf, len) ? -EFAULT : 0;
  }
  
  static inline int ib_copy_to_udata(struct ib_udata *udata, void *src,
  		size_t len) {
  	return copy_to_user(udata->outbuf, src, len) ? -EFAULT : 0;
  }
  /*
   *
   * ib_modify_qp_is_ok - Check that the supplied attribute mask
   * contains all required attributes and no attributes not allowed for
   * the given QP state transition.
   * @cur_state: Current QP state
   * @next_state: Next QP state
   * @type: QP type
   * @mask: Mask of supplied QP attributes
   *
   * This function is a helper function that a low-level driver's
   * modify_qp method can use to validate the consumer's input.  It
   * checks that cur_state and next_state are valid QP states, that a
   * transition from cur_state to next_state is allowed by the IB spec,
   * and that the attribute mask supplied is allowed for the transition.
   */
  int ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state,
  		enum ib_qp_type type, enum ib_qp_attr_mask mask);
  /*
   int ib_register_event_handler(struct ib_event_handler *event_handler);
   int ib_unregister_event_handler(struct ib_event_handler *event_handler);
   void ib_dispatch_event(struct ib_event *event);
  
   int ib_query_device(struct ib_device *device,
   struct ib_device_attr *device_attr);
   */
  int ib_query_port(struct ib_device *device, u8 port_num,
  		struct ib_port_attr *port_attr);
  
  enum rdma_link_layer rdma_port_get_link_layer(struct ib_device *device,
  		u8 port_num);
  
  int ib_query_gid(struct ib_device *device, u8 port_num, int index,
  		union ib_gid *gid);
  
  int ib_query_pkey(struct ib_device *device, u8 port_num, u16 index, u16 *pkey);
  /*
   int ib_modify_device(struct ib_device *device, int device_modify_mask,
   struct ib_device_modify *device_modify);
  
   int ib_modify_port(struct ib_device *device, u8 port_num, int port_modify_mask,
   struct ib_port_modify *port_modify);
  
   int ib_find_gid(struct ib_device *device, union ib_gid *gid, u8 *port_num,
   u16 *index);
  
   int ib_find_pkey(struct ib_device *device, u8 port_num, u16 pkey, u16 *index);
  
   *
   * ib_alloc_pd - Allocates an unused protection domain.
   * @device: The device on which to allocate the protection domain.
   *
   * A protection domain object provides an association between QPs, shared
   * receive queues, address handles, memory regions, and memory windows.
   */
  struct ib_pd *ib_alloc_pd(struct ib_device *device);
  /*
   *
   * ib_dealloc_pd - Deallocates a protection domain.
   * @pd: The protection domain to deallocate.
  
   int ib_dealloc_pd(struct ib_pd *pd);
  
   *
   * ib_create_ah - Creates an address handle for the given address vector.
   * @pd: The protection domain associated with the address handle.
   * @ah_attr: The attributes of the address vector.
   *
   * The address handle is used to reference a local or global destination
   * in all UD QP post sends.
   */
  struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr);
  /*
   *
   * ib_init_ah_from_wc - Initializes address handle attributes from a
   *   work completion.
   * @device: Device on which the received message arrived.
   * @port_num: Port on which the received message arrived.
   * @wc: Work completion associated with the received message.
   * @grh: References the received global route header.  This parameter is
   *   ignored unless the work completion indicates that the GRH is valid.
   * @ah_attr: Returned attributes that can be used when creating an address
   *   handle for replying to the message.
   */
  int ib_init_ah_from_wc(struct ib_device *device, u8 port_num, struct ib_wc *wc,
  		struct ib_grh *grh, struct ib_ah_attr *ah_attr);
  /*
   *
   * ib_create_ah_from_wc - Creates an address handle associated with the
   *   sender of the specified work completion.
   * @pd: The protection domain associated with the address handle.
   * @wc: Work completion information associated with a received message.
   * @grh: References the received global route header.  This parameter is
   *   ignored unless the work completion indicates that the GRH is valid.
   * @port_num: The outbound port number to associate with the address.
   *
   * The address handle is used to reference a local or global destination
   * in all UD QP post sends.
   */
  struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, struct ib_wc *wc,
  		struct ib_grh *grh, u8 port_num);
  /*
   *
   * ib_modify_ah - Modifies the address vector associated with an address
   *   handle.
   * @ah: The address handle to modify.
   * @ah_attr: The new address vector attributes to associate with the
   *   address handle.
  
   int ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr);
  
   *
   * ib_query_ah - Queries the address vector associated with an address
   *   handle.
   * @ah: The address handle to query.
   * @ah_attr: The address vector attributes associated with the address
   *   handle.
  
   int ib_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr);
  
   *
   * ib_destroy_ah - Destroys an address handle.
   * @ah: The address handle to destroy.
   */
  int ib_destroy_ah(struct ib_ah *ah);
  /*
   *
   * ib_create_xrc_srq - Creates an XRC SRQ associated with the specified
   *   protection domain, cq, and xrc domain.
   * @pd: The protection domain associated with the SRQ.
   * @xrc_cq: The cq to be associated with the XRC SRQ.
   * @xrcd: The XRC domain to be associated with the XRC SRQ.
   * @srq_init_attr: A list of initial attributes required to create the
   *   XRC SRQ.  If XRC SRQ creation succeeds, then the attributes are updated
   *   to the actual capabilities of the created XRC SRQ.
   *
   * srq_attr->max_wr and srq_attr->max_sge are read the determine the
   * requested size of the XRC SRQ, and set to the actual values allocated
   * on return.  If ib_create_xrc_srq() succeeds, then max_wr and max_sge
   * will always be at least as large as the requested values.
  
   struct ib_srq *ib_create_xrc_srq(struct ib_pd *pd, struct ib_cq *xrc_cq,
   struct ib_xrcd *xrcd, struct ib_srq_init_attr *srq_init_attr);
  
   *
   * ib_create_srq - Creates a SRQ associated with the specified protection
   *   domain.
   * @pd: The protection domain associated with the SRQ.
   * @srq_init_attr: A list of initial attributes required to create the
   *   SRQ.  If SRQ creation succeeds, then the attributes are updated to
   *   the actual capabilities of the created SRQ.
   *
   * srq_attr->max_wr and srq_attr->max_sge are read the determine the
   * requested size of the SRQ, and set to the actual values allocated
   * on return.  If ib_create_srq() succeeds, then max_wr and max_sge
   * will always be at least as large as the requested values.
  
   struct ib_srq *ib_create_srq(struct ib_pd *pd,
   struct ib_srq_init_attr *srq_init_attr);
  
   *
   * ib_modify_srq - Modifies the attributes for the specified SRQ.
   * @srq: The SRQ to modify.
   * @srq_attr: On input, specifies the SRQ attributes to modify.  On output,
   *   the current values of selected SRQ attributes are returned.
   * @srq_attr_mask: A bit-mask used to specify which attributes of the SRQ
   *   are being modified.
   *
   * The mask may contain IB_SRQ_MAX_WR to resize the SRQ and/or
   * IB_SRQ_LIMIT to set the SRQ's limit and request notification when
   * the number of receives queued drops below the limit.
  
   int ib_modify_srq(struct ib_srq *srq, struct ib_srq_attr *srq_attr,
   enum ib_srq_attr_mask srq_attr_mask);
  
   *
   * ib_query_srq - Returns the attribute list and current values for the
   *   specified SRQ.
   * @srq: The SRQ to query.
   * @srq_attr: The attributes of the specified SRQ.
  
   int ib_query_srq(struct ib_srq *srq, struct ib_srq_attr *srq_attr);
  
   *
   * ib_destroy_srq - Destroys the specified SRQ.
   * @srq: The SRQ to destroy.
  
   int ib_destroy_srq(struct ib_srq *srq);
  
   *
   * ib_post_srq_recv - Posts a list of work requests to the specified SRQ.
   * @srq: The SRQ to post the work request on.
   * @recv_wr: A list of work requests to post on the receive queue.
   * @bad_recv_wr: On an immediate failure, this parameter will reference
   *   the work request that failed to be posted on the QP.
  
   static inline int ib_post_srq_recv(struct ib_srq *srq,
   struct ib_recv_wr *recv_wr, struct ib_recv_wr **bad_recv_wr) {
   return srq->device->post_srq_recv(srq, recv_wr, bad_recv_wr);
   }
  
   *
   * ib_create_qp - Creates a QP associated with the specified protection
   *   domain.
   * @pd: The protection domain associated with the QP.
   * @qp_init_attr: A list of initial attributes required to create the
   *   QP.  If QP creation succeeds, then the attributes are updated to
   *   the actual capabilities of the created QP.
   */
  struct ib_qp *ib_create_qp(struct ib_pd *pd,
  		struct ib_qp_init_attr *qp_init_attr);
  /*
   *
   * ib_modify_qp - Modifies the attributes for the specified QP and then
   *   transitions the QP to the given state.
   * @qp: The QP to modify.
   * @qp_attr: On input, specifies the QP attributes to modify.  On output,
   *   the current values of selected QP attributes are returned.
   * @qp_attr_mask: A bit-mask used to specify which attributes of the QP
   *   are being modified.
   */
  int ib_modify_qp(struct ib_qp *qp, struct ib_qp_attr *qp_attr, int qp_attr_mask);
  /*
   *
   * ib_query_qp - Returns the attribute list and current values for the
   *   specified QP.
   * @qp: The QP to query.
   * @qp_attr: The attributes of the specified QP.
   * @qp_attr_mask: A bit-mask used to select specific attributes to query.
   * @qp_init_attr: Additional attributes of the selected QP.
   *
   * The qp_attr_mask may be used to limit the query to gathering only the
   * selected attributes.
  
   int ib_query_qp(struct ib_qp *qp, struct ib_qp_attr *qp_attr, int qp_attr_mask,
   struct ib_qp_init_attr *qp_init_attr);
  
   *
   * ib_destroy_qp - Destroys the specified QP.
   * @qp: The QP to destroy.
  
   int ib_destroy_qp(struct ib_qp *qp);
  
   *
   * ib_open_qp - Obtain a reference to an existing sharable QP.
   * @xrcd - XRC domain
   * @qp_open_attr: Attributes identifying the QP to open.
   *
   * Returns a reference to a sharable QP.
  
   struct ib_qp *ib_open_qp(struct ib_xrcd *xrcd,
   struct ib_qp_open_attr *qp_open_attr);
  
   *
   * ib_close_qp - Release an external reference to a QP.
   * @qp: The QP handle to release
   *
   * The opened QP handle is released by the caller.  The underlying
   * shared QP is not destroyed until all internal references are released.
  
   int ib_close_qp(struct ib_qp *qp);
  
   *
   * ib_post_send - Posts a list of work requests to the send queue of
   *   the specified QP.
   * @qp: The QP to post the work request on.
   * @send_wr: A list of work requests to post on the send queue.
   * @bad_send_wr: On an immediate failure, this parameter will reference
   *   the work request that failed to be posted on the QP.
   *
   * While IBA Vol. 1 section 11.4.1.1 specifies that if an immediate
   * error is returned, the QP state shall not be affected,
   * ib_post_send() will return an immediate error after queueing any
   * earlier work requests in the list.
   */
  static inline int ib_post_send(struct ib_qp *qp, struct ib_send_wr *send_wr,
  		struct ib_send_wr **bad_send_wr) {
  	return qp->device->post_send(qp, send_wr, bad_send_wr);
  }
  /*
   *
   * ib_post_recv - Posts a list of work requests to the receive queue of
   *   the specified QP.
   * @qp: The QP to post the work request on.
   * @recv_wr: A list of work requests to post on the receive queue.
   * @bad_recv_wr: On an immediate failure, this parameter will reference
   *   the work request that failed to be posted on the QP.
   */
  static inline int ib_post_recv(struct ib_qp *qp, struct ib_recv_wr *recv_wr,
  		struct ib_recv_wr **bad_recv_wr) {
  	return qp->device->post_recv(qp, recv_wr, bad_recv_wr);
  }
  /*
  
   * IB_CQ_VECTOR_LEAST_ATTACHED: The constant specifies that
   *	the CQ will be attached to the completion vector that has
   *	the least number of CQs already attached to it.
  
   #define IB_CQ_VECTOR_LEAST_ATTACHED	0xffffffff
  
   *
   * ib_create_cq - Creates a CQ on the specified device.
   * @device: The device on which to create the CQ.
   * @comp_handler: A user-specified callback that is invoked when a
   *   completion event occurs on the CQ.
   * @event_handler: A user-specified callback that is invoked when an
   *   asynchronous event not associated with a completion occurs on the CQ.
   * @cq_context: Context associated with the CQ returned to the user via
   *   the associated completion and event handlers.
   * @cqe: The minimum size of the CQ.
   * @comp_vector - Completion vector used to signal completion events.
   *     Must be >= 0 and < context->num_comp_vectors.
   *
   * Users can examine the cq structure to determine the actual CQ size.
   */
  struct ib_cq *ib_create_cq(struct ib_device *device,
  		ib_comp_handler comp_handler,
  		void (*event_handler)(struct ib_event *, void *), void *cq_context,
  		int cqe, int comp_vector);
  /*
   *
   * ib_resize_cq - Modifies the capacity of the CQ.
   * @cq: The CQ to resize.
   * @cqe: The minimum size of the CQ.
   *
   * Users can examine the cq structure to determine the actual CQ size.
  
   int ib_resize_cq(struct ib_cq *cq, int cqe);
  
   *
   * ib_modify_cq - Modifies moderation params of the CQ
   * @cq: The CQ to modify.
   * @cq_count: number of CQEs that will trigger an event
   * @cq_period: max period of time in usec before triggering an event
   *
  
   int ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period);
  
   *
   * ib_destroy_cq - Destroys the specified CQ.
   * @cq: The CQ to destroy.
  
   int ib_destroy_cq(struct ib_cq *cq);
  
   *
   * ib_poll_cq - poll a CQ for completion(s)
   * @cq:the CQ being polled
   * @num_entries:maximum number of completions to return
   * @wc:array of at least @num_entries &struct ib_wc where completions
   *   will be returned
   *
   * Poll a CQ for (possibly multiple) completions.  If the return value
   * is < 0, an error occurred.  If the return value is >= 0, it is the
   * number of completions returned.  If the return value is
   * non-negative and < num_entries, then the CQ was emptied.
   */
  static inline int ib_poll_cq(struct ib_cq *cq, int num_entries,
  		struct ib_wc *wc) {
  	return cq->device->poll_cq(cq, num_entries, wc);
  }
  /*
   *
   * ib_peek_cq - Returns the number of unreaped completions currently
   *   on the specified CQ.
   * @cq: The CQ to peek.
   * @wc_cnt: A minimum number of unreaped completions to check for.
   *
   * If the number of unreaped completions is greater than or equal to wc_cnt,
   * this function returns wc_cnt, otherwise, it returns the actual number of
   * unreaped completions.
  
   int ib_peek_cq(struct ib_cq *cq, int wc_cnt);
  
   *
   * ib_req_notify_cq - Request completion notification on a CQ.
   * @cq: The CQ to generate an event for.
   * @flags:
   *   Must contain exactly one of %IB_CQ_SOLICITED or %IB_CQ_NEXT_COMP
   *   to request an event on the next solicited event or next work
   *   completion at any type, respectively. %IB_CQ_REPORT_MISSED_EVENTS
   *   may also be |ed in to request a hint about missed events, as
   *   described below.
   *
   * Return Value:
   *    < 0 means an error occurred while requesting notification
   *   == 0 means notification was requested successfully, and if
   *        IB_CQ_REPORT_MISSED_EVENTS was passed in, then no events
   *        were missed and it is safe to wait for another event.  In
   *        this case is it guaranteed that any work completions added
   *        to the CQ since the last CQ poll will trigger a completion
   *        notification event.
   *    > 0 is only returned if IB_CQ_REPORT_MISSED_EVENTS was passed
   *        in.  It means that the consumer must poll the CQ again to
   *        make sure it is empty to avoid missing an event because of a
   *        race between requesting notification and an entry being
   *        added to the CQ.  This return value means it is possible
   *        (but not guaranteed) that a work completion has been added
   *        to the CQ since the last poll without triggering a
   *        completion notification event.
   */
  static inline int ib_req_notify_cq(struct ib_cq *cq,
  		enum ib_cq_notify_flags flags) {
  	return cq->device->req_notify_cq(cq, flags);
  }
  /*
   *
   * ib_req_ncomp_notif - Request completion notification when there are
   *   at least the specified number of unreaped completions on the CQ.
   * @cq: The CQ to generate an event for.
   * @wc_cnt: The number of unreaped completions that should be on the
   *   CQ before an event is generated.
  
   static inline int ib_req_ncomp_notif(struct ib_cq *cq, int wc_cnt) {
   return cq->device->req_ncomp_notif ?
   cq->device->req_ncomp_notif(cq, wc_cnt) : -ENOSYS;
   }
  
   *
   * ib_get_dma_mr - Returns a memory region for system memory that is
   *   usable for DMA.
   * @pd: The protection domain associated with the memory region.
   * @mr_access_flags: Specifies the memory access rights.
   *
   * Note that the ib_dma_*() functions defined below must be used
   * to create/destroy addresses used with the Lkey or Rkey returned
   * by ib_get_dma_mr().
   */
  struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags);
  /*
   *
   * ib_dma_mapping_error - check a DMA addr for error
   * @dev: The device for which the dma_addr was created
   * @dma_addr: The DMA address to check
  
   static inline int ib_dma_mapping_error(struct ib_device *dev, u64 dma_addr) {
   if (dev->dma_ops)
   return dev->dma_ops->mapping_error(dev, dma_addr);
   return dma_mapping_error(dev->dma_device, dma_addr);
   }
  
   *
   * ib_dma_map_single - Map a kernel virtual address to DMA address
   * @dev: The device for which the dma_addr is to be created
   * @cpu_addr: The kernel virtual address
   * @size: The size of the region in bytes
   * @direction: The direction of the DMA
  
   static inline u64 ib_dma_map_single(struct ib_device *dev, void *cpu_addr,
   size_t size, enum dma_data_direction direction) {
   if (dev->dma_ops)
   return dev->dma_ops->map_single(dev, cpu_addr, size, direction);
   return dma_map_single(dev->dma_device, cpu_addr, size, direction);
   }
  
   *
   * ib_dma_unmap_single - Destroy a mapping created by ib_dma_map_single()
   * @dev: The device for which the DMA address was created
   * @addr: The DMA address
   * @size: The size of the region in bytes
   * @direction: The direction of the DMA
  
   static inline void ib_dma_unmap_single(struct ib_device *dev, u64 addr,
   size_t size, enum dma_data_direction direction) {
   if (dev->dma_ops)
   dev->dma_ops->unmap_single(dev, addr, size, direction);
   else
   dma_unmap_single(dev->dma_device, addr, size, direction);
   }
  
   static inline u64 ib_dma_map_single_attrs(struct ib_device *dev, void *cpu_addr,
   size_t size, enum dma_data_direction direction, struct dma_attrs *attrs) {
   return dma_map_single_attrs(dev->dma_device, cpu_addr, size, direction,
   attrs);
   }
  
   static inline void ib_dma_unmap_single_attrs(struct ib_device *dev, u64 addr,
   size_t size, enum dma_data_direction direction, struct dma_attrs *attrs) {
   return dma_unmap_single_attrs(dev->dma_device, addr, size, direction, attrs);
   }
  
   *
   * ib_dma_map_page - Map a physical page to DMA address
   * @dev: The device for which the dma_addr is to be created
   * @page: The page to be mapped
   * @offset: The offset within the page
   * @size: The size of the region in bytes
   * @direction: The direction of the DMA
  
   static inline u64 ib_dma_map_page(struct ib_device *dev, struct page *page,
   unsigned long offset, size_t size, enum dma_data_direction direction) {
   if (dev->dma_ops)
   return dev->dma_ops->map_page(dev, page, offset, size, direction);
   return dma_map_page(dev->dma_device, page, offset, size, direction);
   }
  
   *
   * ib_dma_unmap_page - Destroy a mapping created by ib_dma_map_page()
   * @dev: The device for which the DMA address was created
   * @addr: The DMA address
   * @size: The size of the region in bytes
   * @direction: The direction of the DMA
  
   static inline void ib_dma_unmap_page(struct ib_device *dev, u64 addr,
   size_t size, enum dma_data_direction direction) {
   if (dev->dma_ops)
   dev->dma_ops->unmap_page(dev, addr, size, direction);
   else
   dma_unmap_page(dev->dma_device, addr, size, direction);
   }
  
   *
   * ib_dma_map_sg - Map a scatter/gather list to DMA addresses
   * @dev: The device for which the DMA addresses are to be created
   * @sg: The array of scatter/gather entries
   * @nents: The number of scatter/gather entries
   * @direction: The direction of the DMA
  
   static inline int ib_dma_map_sg(struct ib_device *dev, struct scatterlist *sg,
   int nents, enum dma_data_direction direction) {
   if (dev->dma_ops)
   return dev->dma_ops->map_sg(dev, sg, nents, direction);
   return dma_map_sg(dev->dma_device, sg, nents, direction);
   }
  
   *
   * ib_dma_unmap_sg - Unmap a scatter/gather list of DMA addresses
   * @dev: The device for which the DMA addresses were created
   * @sg: The array of scatter/gather entries
   * @nents: The number of scatter/gather entries
   * @direction: The direction of the DMA
  
   static inline void ib_dma_unmap_sg(struct ib_device *dev,
   struct scatterlist *sg, int nents, enum dma_data_direction direction) {
   if (dev->dma_ops)
   dev->dma_ops->unmap_sg(dev, sg, nents, direction);
   else
   dma_unmap_sg(dev->dma_device, sg, nents, direction);
   }
  
   static inline int ib_dma_map_sg_attrs(struct ib_device *dev,
   struct scatterlist *sg, int nents, enum dma_data_direction direction,
   struct dma_attrs *attrs) {
   return dma_map_sg_attrs(dev->dma_device, sg, nents, direction, attrs);
   }
  
   static inline void ib_dma_unmap_sg_attrs(struct ib_device *dev,
   struct scatterlist *sg, int nents, enum dma_data_direction direction,
   struct dma_attrs *attrs) {
   dma_unmap_sg_attrs(dev->dma_device, sg, nents, direction, attrs);
   }
   *
   * ib_sg_dma_address - Return the DMA address from a scatter/gather entry
   * @dev: The device for which the DMA addresses were created
   * @sg: The scatter/gather entry
  
   static inline u64 ib_sg_dma_address(struct ib_device *dev,
   struct scatterlist *sg) {
   if (dev->dma_ops)
   return dev->dma_ops->dma_address(dev, sg);
   return sg_dma_address(sg);
   }
  
   *
   * ib_sg_dma_len - Return the DMA length from a scatter/gather entry
   * @dev: The device for which the DMA addresses were created
   * @sg: The scatter/gather entry
  
   static inline unsigned int ib_sg_dma_len(struct ib_device *dev,
   struct scatterlist *sg) {
   if (dev->dma_ops)
   return dev->dma_ops->dma_len(dev, sg);
   return sg_dma_len(sg);
   }
  
   *
   * ib_dma_sync_single_for_cpu - Prepare DMA region to be accessed by CPU
   * @dev: The device for which the DMA address was created
   * @addr: The DMA address
   * @size: The size of the region in bytes
   * @dir: The direction of the DMA
  
   static inline void ib_dma_sync_single_for_cpu(struct ib_device *dev, u64 addr,
   size_t size, enum dma_data_direction dir) {
   if (dev->dma_ops)
   dev->dma_ops->sync_single_for_cpu(dev, addr, size, dir);
   else
   dma_sync_single_for_cpu(dev->dma_device, addr, size, dir);
   }
  
   *
   * ib_dma_sync_single_for_device - Prepare DMA region to be accessed by device
   * @dev: The device for which the DMA address was created
   * @addr: The DMA address
   * @size: The size of the region in bytes
   * @dir: The direction of the DMA
  
   static inline void ib_dma_sync_single_for_device(struct ib_device *dev,
   u64 addr, size_t size, enum dma_data_direction dir) {
   if (dev->dma_ops)
   dev->dma_ops->sync_single_for_device(dev, addr, size, dir);
   else
   dma_sync_single_for_device(dev->dma_device, addr, size, dir);
   }
  
   *
   * ib_dma_alloc_coherent - Allocate memory and map it for DMA
   * @dev: The device for which the DMA address is requested
   * @size: The size of the region to allocate in bytes
   * @dma_handle: A pointer for returning the DMA address of the region
   * @flag: memory allocator flags
  
   static inline void *ib_dma_alloc_coherent(struct ib_device *dev, size_t size,
   u64 *dma_handle, gfp_t flag) {
   if (dev->dma_ops)
   return dev->dma_ops->alloc_coherent(dev, size, dma_handle, flag);
   else {
   dma_addr_t handle;
   void *ret;
  
   ret = dma_alloc_coherent(dev->dma_device, size, &handle, flag);
   *dma_handle = handle;
   return ret;
   }
   }
  
   *
   * ib_dma_free_coherent - Free memory allocated by ib_dma_alloc_coherent()
   * @dev: The device for which the DMA addresses were allocated
   * @size: The size of the region
   * @cpu_addr: the address returned by ib_dma_alloc_coherent()
   * @dma_handle: the DMA address returned by ib_dma_alloc_coherent()
  
   static inline void ib_dma_free_coherent(struct ib_device *dev, size_t size,
   void *cpu_addr, u64 dma_handle) {
   if (dev->dma_ops)
   dev->dma_ops->free_coherent(dev, size, cpu_addr, dma_handle);
   else
   dma_free_coherent(dev->dma_device, size, cpu_addr, dma_handle);
   }
  
   *
   * ib_reg_phys_mr - Prepares a virtually addressed memory region for use
   *   by an HCA.
   * @pd: The protection domain associated assigned to the registered region.
   * @phys_buf_array: Specifies a list of physical buffers to use in the
   *   memory region.
   * @num_phys_buf: Specifies the size of the phys_buf_array.
   * @mr_access_flags: Specifies the memory access rights.
   * @iova_start: The offset of the region's starting I/O virtual address.
  
   struct ib_mr *ib_reg_phys_mr(struct ib_pd *pd,
   struct ib_phys_buf *phys_buf_array, int num_phys_buf,
   int mr_access_flags, u64 *iova_start);
  
   *
   * ib_rereg_phys_mr - Modifies the attributes of an existing memory region.
   *   Conceptually, this call performs the functions deregister memory region
   *   followed by register physical memory region.  Where possible,
   *   resources are reused instead of deallocated and reallocated.
   * @mr: The memory region to modify.
   * @mr_rereg_mask: A bit-mask used to indicate which of the following
   *   properties of the memory region are being modified.
   * @pd: If %IB_MR_REREG_PD is set in mr_rereg_mask, this field specifies
   *   the new protection domain to associated with the memory region,
   *   otherwise, this parameter is ignored.
   * @phys_buf_array: If %IB_MR_REREG_TRANS is set in mr_rereg_mask, this
   *   field specifies a list of physical buffers to use in the new
   *   translation, otherwise, this parameter is ignored.
   * @num_phys_buf: If %IB_MR_REREG_TRANS is set in mr_rereg_mask, this
   *   field specifies the size of the phys_buf_array, otherwise, this
   *   parameter is ignored.
   * @mr_access_flags: If %IB_MR_REREG_ACCESS is set in mr_rereg_mask, this
   *   field specifies the new memory access rights, otherwise, this
   *   parameter is ignored.
   * @iova_start: The offset of the region's starting I/O virtual address.
  
   int ib_rereg_phys_mr(struct ib_mr *mr, int mr_rereg_mask, struct ib_pd *pd,
   struct ib_phys_buf *phys_buf_array, int num_phys_buf,
   int mr_access_flags, u64 *iova_start);
  
   *
   * ib_query_mr - Retrieves information about a specific memory region.
   * @mr: The memory region to retrieve information about.
   * @mr_attr: The attributes of the specified memory region.
  
   int ib_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr);
  
   *
   * ib_dereg_mr - Deregisters a memory region and removes it from the
   *   HCA translation table.
   * @mr: The memory region to deregister.
  
   int ib_dereg_mr(struct ib_mr *mr);
  
   *
   * ib_alloc_fast_reg_mr - Allocates memory region usable with the
   *   IB_WR_FAST_REG_MR send work request.
   * @pd: The protection domain associated with the region.
   * @max_page_list_len: requested max physical buffer list length to be
   *   used with fast register work requests for this MR.
  
   struct ib_mr *ib_alloc_fast_reg_mr(struct ib_pd *pd, int max_page_list_len);
  
   *
   * ib_alloc_fast_reg_page_list - Allocates a page list array
   * @device - ib device pointer.
   * @page_list_len - size of the page list array to be allocated.
   *
   * This allocates and returns a struct ib_fast_reg_page_list * and a
   * page_list array that is at least page_list_len in size.  The actual
   * size is returned in max_page_list_len.  The caller is responsible
   * for initializing the contents of the page_list array before posting
   * a send work request with the IB_WC_FAST_REG_MR opcode.
   *
   * The page_list array entries must be translated using one of the
   * ib_dma_*() functions just like the addresses passed to
   * ib_map_phys_fmr().  Once the ib_post_send() is issued, the struct
   * ib_fast_reg_page_list must not be modified by the caller until the
   * IB_WC_FAST_REG_MR work request completes.
  
   struct ib_fast_reg_page_list *ib_alloc_fast_reg_page_list(
   struct ib_device *device, int page_list_len);
  
   *
   * ib_free_fast_reg_page_list - Deallocates a previously allocated
   *   page list array.
   * @page_list - struct ib_fast_reg_page_list pointer to be deallocated.
  
   void ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list);
  
   *
   * ib_update_fast_reg_key - updates the key portion of the fast_reg MR
   *   R_Key and L_Key.
   * @mr - struct ib_mr pointer to be updated.
   * @newkey - new key to be used.
  
   static inline void ib_update_fast_reg_key(struct ib_mr *mr, u8 newkey) {
   mr->lkey = (mr->lkey & 0xffffff00) | newkey;
   mr->rkey = (mr->rkey & 0xffffff00) | newkey;
   }
  
   *
   * ib_alloc_mw - Allocates a memory window.
   * @pd: The protection domain associated with the memory window.
  
   struct ib_mw *ib_alloc_mw(struct ib_pd *pd);
  
   *
   * ib_bind_mw - Posts a work request to the send queue of the specified
   *   QP, which binds the memory window to the given address range and
   *   remote access attributes.
   * @qp: QP to post the bind work request on.
   * @mw: The memory window to bind.
   * @mw_bind: Specifies information about the memory window, including
   *   its address range, remote access rights, and associated memory region.
  
   static inline int ib_bind_mw(struct ib_qp *qp, struct ib_mw *mw,
   struct ib_mw_bind *mw_bind) {
   XXX reference counting in corresponding MR?
   return mw->device->bind_mw ? mw->device->bind_mw(qp, mw, mw_bind) : -ENOSYS;
   }
  
   *
   * ib_dealloc_mw - Deallocates a memory window.
   * @mw: The memory window to deallocate.
  
   int ib_dealloc_mw(struct ib_mw *mw);
  
   *
   * ib_alloc_fmr - Allocates a unmapped fast memory region.
   * @pd: The protection domain associated with the unmapped region.
   * @mr_access_flags: Specifies the memory access rights.
   * @fmr_attr: Attributes of the unmapped region.
   *
   * A fast memory region must be mapped before it can be used as part of
   * a work request.
  
   struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd, int mr_access_flags,
   struct ib_fmr_attr *fmr_attr);
  
   *
   * ib_map_phys_fmr - Maps a list of physical pages to a fast memory region.
   * @fmr: The fast memory region to associate with the pages.
   * @page_list: An array of physical pages to map to the fast memory region.
   * @list_len: The number of pages in page_list.
   * @iova: The I/O virtual address to use with the mapped region.
  
   static inline int ib_map_phys_fmr(struct ib_fmr *fmr, u64 *page_list,
   int list_len, u64 iova) {
   return fmr->device->map_phys_fmr(fmr, page_list, list_len, iova);
   }
  
   *
   * ib_unmap_fmr - Removes the mapping from a list of fast memory regions.
   * @fmr_list: A linked list of fast memory regions to unmap.
  
   int ib_unmap_fmr(struct list_head *fmr_list);
  
   *
   * ib_dealloc_fmr - Deallocates a fast memory region.
   * @fmr: The fast memory region to deallocate.
  
   int ib_dealloc_fmr(struct ib_fmr *fmr);
  
   *
   * ib_attach_mcast - Attaches the specified QP to a multicast group.
   * @qp: QP to attach to the multicast group.  The QP must be type
   *   IB_QPT_UD.
   * @gid: Multicast group GID.
   * @lid: Multicast group LID in host byte order.
   *
   * In order to send and receive multicast packets, subnet
   * administration must have created the multicast group and configured
   * the fabric appropriately.  The port associated with the specified
   * QP must also be a member of the multicast group.
  
   int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
  
   *
   * ib_detach_mcast - Detaches the specified QP from a multicast group.
   * @qp: QP to detach from the multicast group.
   * @gid: Multicast group GID.
   * @lid: Multicast group LID in host byte order.
  
   int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
  
   *
   * ib_alloc_xrcd - Allocates an XRC domain.
   * @device: The device on which to allocate the XRC domain.
  
   struct ib_xrcd *ib_alloc_xrcd(struct ib_device *device);
  
   *
   * ib_dealloc_xrcd - Deallocates an XRC domain.
   * @xrcd: The XRC domain to deallocate.
  
   int ib_dealloc_xrcd(struct ib_xrcd *xrcd);
  
   int ib_attach_flow(struct ib_qp *qp, struct ib_flow_spec *spec, int priority);
   int ib_detach_flow(struct ib_qp *qp, struct ib_flow_spec *spec, int priority);
   */
  
  /*VLAD*/
  void ib_cache_setup_one(struct ib_device *device);
  
  #endif  /*IB_VERBS_H*/
  