text: /*
   * Copyright (c) 2004, 2005, Voltaire, Inc. All rights reserved.
   * Copyright (c) 2005 Intel Corporation. All rights reserved.
   * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
   * Copyright (c) 2009 HNR Consulting. 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.
   */
  
  #ifndef __IB_MAD_PRIV_H__
  #define __IB_MAD_PRIV_H__
  
  #include <linux/completion.h>
  #include <linux/err.h>
  #include <linux/workqueue.h>
  #include <rdma/ib_mad.h>
  #include <rdma/ib_smi.h>
  
  #define IB_MAD_QPS_CORE		2 /* Always QP0 and QP1 as a minimum */
  
  /* QP and CQ parameters */
  #define IB_MAD_QP_SEND_SIZE	128
  #define IB_MAD_QP_RECV_SIZE	512
  #define IB_MAD_QP_MIN_SIZE	64
  #define IB_MAD_QP_MAX_SIZE	8192
  #define IB_MAD_SEND_REQ_MAX_SG	2
  #define IB_MAD_RECV_REQ_MAX_SG	1
  
  #define IB_MAD_SEND_Q_PSN	0
  
  /* Registration table sizes */
  #define MAX_MGMT_CLASS		80
  #define MAX_MGMT_VERSION	8
  #define MAX_MGMT_OUI		8
  #define MAX_MGMT_VENDOR_RANGE2	(IB_MGMT_CLASS_VENDOR_RANGE2_END - \
  				IB_MGMT_CLASS_VENDOR_RANGE2_START + 1)
  
  struct ib_mad_list_head {
  	struct list_head list;
  	struct ib_mad_queue *mad_queue;
  };
  
  struct ib_mad_private_header {
  	struct ib_mad_list_head mad_list;
  	struct ib_mad_recv_wc recv_wc;
  	struct ib_wc wc;
  	u64 mapping;
  } __attribute__ ((packed));
  
  struct ib_mad_private {
  	struct ib_mad_private_header header;
  	struct ib_grh grh;
  	union {
  		struct ib_mad mad;
  		struct ib_rmpp_mad rmpp_mad;
  		struct ib_smp smp;
  	} mad;
  } __attribute__ ((packed));
  
  struct ib_rmpp_segment {
  	struct list_head list;
  	u32 num;
  	u8 data[0];
  };
  
  struct ib_mad_agent_private {
  	struct list_head agent_list;
  	struct ib_mad_agent agent;
  	struct ib_mad_reg_req *reg_req;
  	struct ib_mad_qp_info *qp_info;
  
  	spinlock_t lock;
  	struct list_head send_list;
  	struct list_head wait_list;
  	struct list_head done_list;
  	struct delayed_work timed_work;
  	unsigned long timeout;
  	struct list_head local_list;
  	struct work_struct local_work;
  	struct list_head rmpp_list;
  
  	atomic_t refcount;
  	struct completion comp;
  };
  
  struct ib_mad_snoop_private {
  	struct ib_mad_agent agent;
  	struct ib_mad_qp_info *qp_info;
  	int snoop_index;
  	int mad_snoop_flags;
  	atomic_t refcount;
  	struct completion comp;
  };
  
  struct ib_mad_send_wr_private {
  	struct ib_mad_list_head mad_list;
  	struct list_head agent_list;
  	struct ib_mad_agent_private *mad_agent_priv;
  	struct ib_mad_send_buf send_buf;
  	u64 header_mapping;
  	u64 payload_mapping;
  	struct ib_send_wr send_wr;
  	struct ib_sge sg_list[IB_MAD_SEND_REQ_MAX_SG];
  	__be64 tid;
  	unsigned long timeout;
  	int max_retries;
  	int retries_left;
  	int retry;
  	int refcount;
  	enum ib_wc_status status;
  
  	/* RMPP control */
  	struct list_head rmpp_list;
  	struct ib_rmpp_segment *last_ack_seg;
  	struct ib_rmpp_segment *cur_seg;
  	int last_ack;
  	int seg_num;
  	int newwin;
  	int pad;
  };
  
  struct ib_mad_local_private {
  	struct list_head completion_list;
  	struct ib_mad_private *mad_priv;
  	struct ib_mad_agent_private *recv_mad_agent;
  	struct ib_mad_send_wr_private *mad_send_wr;
  };
  
  struct ib_mad_mgmt_method_table {
  	struct ib_mad_agent_private *agent[IB_MGMT_MAX_METHODS];
  };
  
  struct ib_mad_mgmt_class_table {
  	struct ib_mad_mgmt_method_table *method_table[MAX_MGMT_CLASS];
  };
  
  struct ib_mad_mgmt_vendor_class {
  	u8	oui[MAX_MGMT_OUI][3];
  	struct ib_mad_mgmt_method_table *method_table[MAX_MGMT_OUI];
  };
  
  struct ib_mad_mgmt_vendor_class_table {
  	struct ib_mad_mgmt_vendor_class *vendor_class[MAX_MGMT_VENDOR_RANGE2];
  };
  
  struct ib_mad_mgmt_version_table {
  	struct ib_mad_mgmt_class_table *class;
  	struct ib_mad_mgmt_vendor_class_table *vendor;
  };
  
  struct ib_mad_queue {
  	spinlock_t lock;
  	struct list_head list;
  	int count;
  	int max_active;
  	struct ib_mad_qp_info *qp_info;
  };
  
  struct ib_mad_qp_info {
  	struct ib_mad_port_private *port_priv;
  	struct ib_qp *qp;
  	struct ib_mad_queue send_queue;
  	struct ib_mad_queue recv_queue;
  	struct list_head overflow_list;
  	spinlock_t snoop_lock;
  	struct ib_mad_snoop_private **snoop_table;
  	int snoop_table_size;
  	atomic_t snoop_count;
  };
  
  struct ib_mad_port_private {
  	struct list_head port_list;
  	struct ib_device *device;
  	int port_num;
  	struct ib_cq *cq;
  	struct ib_pd *pd;
  	struct ib_mr *mr;
  
  	spinlock_t reg_lock;
  	struct ib_mad_mgmt_version_table version[MAX_MGMT_VERSION];
  	struct list_head agent_list;
  	struct workqueue_struct *wq;
  	struct work_struct work;
  	struct ib_mad_qp_info qp_info[IB_MAD_QPS_CORE];
  };
  
  int ib_send_mad(struct ib_mad_send_wr_private *mad_send_wr);
  
  struct ib_mad_send_wr_private *
  ib_find_send_mad(struct ib_mad_agent_private *mad_agent_priv,
  		 struct ib_mad_recv_wc *mad_recv_wc);
  
  void ib_mad_complete_send_wr(struct ib_mad_send_wr_private *mad_send_wr,
  			     struct ib_mad_send_wc *mad_send_wc);
  
  void ib_mark_mad_done(struct ib_mad_send_wr_private *mad_send_wr);
  
  void ib_reset_mad_timeout(struct ib_mad_send_wr_private *mad_send_wr,
  			  int timeout_ms);
  
  #endif	/* __IB_MAD_PRIV_H__ */
  