[linux-2.6] / drivers / infiniband / hw / nes / nes_cm.h

/*
 * Copyright (c) 2006 - 2008 NetEffect, Inc. All rights reserved.
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the
 * OpenIB.org BSD license below:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer in the documentation and/or other materials
 *        provided with the distribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 */

#ifndef NES_CM_H
#define NES_CM_H

#define QUEUE_EVENTS

#define NES_MANAGE_APBVT_DEL 0
#define NES_MANAGE_APBVT_ADD 1

/* IETF MPA -- defines, enums, structs */
#define IEFT_MPA_KEY_REQ  "MPA ID Req Frame"
#define IEFT_MPA_KEY_REP  "MPA ID Rep Frame"
#define IETF_MPA_KEY_SIZE 16
#define IETF_MPA_VERSION  1

enum ietf_mpa_flags {
	IETF_MPA_FLAGS_MARKERS = 0x80,	/* receive Markers */
	IETF_MPA_FLAGS_CRC     = 0x40,	/* receive Markers */
	IETF_MPA_FLAGS_REJECT  = 0x20,	/* Reject */
};

struct ietf_mpa_frame {
	u8 key[IETF_MPA_KEY_SIZE];
	u8 flags;
	u8 rev;
	__be16 priv_data_len;
	u8 priv_data[0];
};

#define ietf_mpa_req_resp_frame ietf_mpa_frame

struct nes_v4_quad {
	u32 rsvd0;
	__le32 DstIpAdrIndex;	/* Only most significant 5 bits are valid */
	__be32 SrcIpadr;
	__be16 TcpPorts[2];		/* src is low, dest is high */
};

struct nes_cm_node;
enum nes_timer_type {
	NES_TIMER_TYPE_SEND,
	NES_TIMER_TYPE_RECV,
	NES_TIMER_NODE_CLEANUP,
	NES_TIMER_TYPE_CLOSE,
};

#define MAX_NES_IFS 4

#define SET_ACK 1
#define SET_SYN 2
#define SET_FIN 4
#define SET_RST 8

#define TCP_OPTIONS_PADDING	3

struct option_base {
	u8 optionnum;
	u8 length;
};

enum option_numbers {
	OPTION_NUMBER_END,
	OPTION_NUMBER_NONE,
	OPTION_NUMBER_MSS,
	OPTION_NUMBER_WINDOW_SCALE,
	OPTION_NUMBER_SACK_PERM,
	OPTION_NUMBER_SACK,
	OPTION_NUMBER_WRITE0 = 0xbc
};

struct option_mss {
	u8 optionnum;
	u8 length;
	__be16 mss;
};

struct option_windowscale {
	u8 optionnum;
	u8 length;
	u8 shiftcount;
};

union all_known_options {
	char as_end;
	struct option_base as_base;
	struct option_mss as_mss;
	struct option_windowscale as_windowscale;
};

struct nes_timer_entry {
	struct list_head list;
	unsigned long timetosend;	/* jiffies */
	struct sk_buff *skb;
	u32 type;
	u32 retrycount;
	u32 retranscount;
	u32 context;
	u32 seq_num;
	u32 send_retrans;
	int close_when_complete;
	struct net_device *netdev;
};

#define NES_DEFAULT_RETRYS  64
#define NES_DEFAULT_RETRANS 8
#ifdef CONFIG_INFINIBAND_NES_DEBUG
#define NES_RETRY_TIMEOUT   (1000*HZ/1000)
#else
#define NES_RETRY_TIMEOUT   (3000*HZ/1000)
#endif
#define NES_SHORT_TIME      (10)
#define NES_LONG_TIME       (2000*HZ/1000)

#define NES_CM_HASHTABLE_SIZE         1024
#define NES_CM_TCP_TIMER_INTERVAL     3000
#define NES_CM_DEFAULT_MTU            1540
#define NES_CM_DEFAULT_FRAME_CNT      10
#define NES_CM_THREAD_STACK_SIZE      256
#define NES_CM_DEFAULT_RCV_WND        64240	// before we know that window scaling is allowed
#define NES_CM_DEFAULT_RCV_WND_SCALED 256960  // after we know that window scaling is allowed
#define NES_CM_DEFAULT_RCV_WND_SCALE  2
#define NES_CM_DEFAULT_FREE_PKTS      0x000A
#define NES_CM_FREE_PKT_LO_WATERMARK  2

#define NES_CM_DEFAULT_MSS   536

#define NES_CM_DEF_SEQ       0x159bf75f
#define NES_CM_DEF_LOCAL_ID  0x3b47

#define NES_CM_DEF_SEQ2      0x18ed5740
#define NES_CM_DEF_LOCAL_ID2 0xb807

typedef u32 nes_addr_t;

#define nes_cm_tsa_context nes_qp_context

struct nes_qp;

/* cm node transition states */
enum nes_cm_node_state {
	NES_CM_STATE_UNKNOWN,
	NES_CM_STATE_INITED,
	NES_CM_STATE_LISTENING,
	NES_CM_STATE_SYN_RCVD,
	NES_CM_STATE_SYN_SENT,
	NES_CM_STATE_ONE_SIDE_ESTABLISHED,
	NES_CM_STATE_ESTABLISHED,
	NES_CM_STATE_ACCEPTING,
	NES_CM_STATE_MPAREQ_SENT,
	NES_CM_STATE_MPAREQ_RCVD,
	NES_CM_STATE_TSA,
	NES_CM_STATE_FIN_WAIT1,
	NES_CM_STATE_FIN_WAIT2,
	NES_CM_STATE_CLOSE_WAIT,
	NES_CM_STATE_TIME_WAIT,
	NES_CM_STATE_LAST_ACK,
	NES_CM_STATE_CLOSING,
	NES_CM_STATE_CLOSED
};

enum nes_tcpip_pkt_type {
	NES_PKT_TYPE_UNKNOWN,
	NES_PKT_TYPE_SYN,
	NES_PKT_TYPE_SYNACK,
	NES_PKT_TYPE_ACK,
	NES_PKT_TYPE_FIN,
	NES_PKT_TYPE_RST
};


/* type of nes connection */
enum nes_cm_conn_type {
	NES_CM_IWARP_CONN_TYPE,
};

/* CM context params */
struct nes_cm_tcp_context {
	u8  client;

	u32 loc_seq_num;
	u32 loc_ack_num;
	u32 rem_ack_num;
	u32 rcv_nxt;

	u32 loc_id;
	u32 rem_id;

	u32 snd_wnd;
	u32 max_snd_wnd;

	u32 rcv_wnd;
	u32 mss;
	u8  snd_wscale;
	u8  rcv_wscale;

	struct nes_cm_tsa_context tsa_cntxt;
	struct timeval            sent_ts;
};


enum nes_cm_listener_state {
	NES_CM_LISTENER_PASSIVE_STATE=1,
	NES_CM_LISTENER_ACTIVE_STATE=2,
	NES_CM_LISTENER_EITHER_STATE=3
};

struct nes_cm_listener {
	struct list_head           list;
	struct nes_cm_core         *cm_core;
	u8                         loc_mac[ETH_ALEN];
	nes_addr_t                 loc_addr;
	u16                        loc_port;
	struct iw_cm_id            *cm_id;
	enum nes_cm_conn_type      conn_type;
	atomic_t                   ref_count;
	struct nes_vnic            *nesvnic;
	atomic_t                   pend_accepts_cnt;
	int                        backlog;
	enum nes_cm_listener_state listener_state;
	u32                        reused_node;
};

/* per connection node and node state information */
struct nes_cm_node {
	u32                       hashkey;

	nes_addr_t                loc_addr, rem_addr;
	u16                       loc_port, rem_port;

	u8                        loc_mac[ETH_ALEN];
	u8                        rem_mac[ETH_ALEN];

	enum nes_cm_node_state    state;
	struct nes_cm_tcp_context tcp_cntxt;
	struct nes_cm_core        *cm_core;
	struct sk_buff_head       resend_list;
	atomic_t                  ref_count;
	struct net_device         *netdev;

	struct nes_cm_node        *loopbackpartner;

	struct nes_timer_entry	*send_entry;

	spinlock_t                retrans_list_lock;
	struct list_head          recv_list;
	spinlock_t                recv_list_lock;

	int                       send_write0;
	union {
		struct ietf_mpa_frame mpa_frame;
		u8                    mpa_frame_buf[NES_CM_DEFAULT_MTU];
	};
	u16                       mpa_frame_size;
	struct iw_cm_id           *cm_id;
	struct list_head          list;
	int                       accelerated;
	struct nes_cm_listener    *listener;
	enum nes_cm_conn_type     conn_type;
	struct nes_vnic           *nesvnic;
	int                       apbvt_set;
	int                       accept_pend;
	int			freed;
	struct nes_qp		*nesqp;
};

/* structure for client or CM to fill when making CM api calls. */
/*	- only need to set relevant data, based on op. */
struct nes_cm_info {
	union {
		struct iw_cm_id   *cm_id;
		struct net_device *netdev;
	};

	u16 loc_port;
	u16 rem_port;
	nes_addr_t loc_addr;
	nes_addr_t rem_addr;

	enum nes_cm_conn_type  conn_type;
	int backlog;
};

/* CM event codes */
enum  nes_cm_event_type {
	NES_CM_EVENT_UNKNOWN,
	NES_CM_EVENT_ESTABLISHED,
	NES_CM_EVENT_MPA_REQ,
	NES_CM_EVENT_MPA_CONNECT,
	NES_CM_EVENT_MPA_ACCEPT,
	NES_CM_EVENT_MPA_ESTABLISHED,
	NES_CM_EVENT_CONNECTED,
	NES_CM_EVENT_CLOSED,
	NES_CM_EVENT_RESET,
	NES_CM_EVENT_DROPPED_PKT,
	NES_CM_EVENT_CLOSE_IMMED,
	NES_CM_EVENT_CLOSE_HARD,
	NES_CM_EVENT_CLOSE_CLEAN,
	NES_CM_EVENT_ABORTED,
	NES_CM_EVENT_SEND_FIRST
};

/* event to post to CM event handler */
struct nes_cm_event {
	enum nes_cm_event_type type;

	struct nes_cm_info cm_info;
	struct work_struct event_work;
	struct nes_cm_node *cm_node;
};

struct nes_cm_core {
	enum nes_cm_node_state  state;

	atomic_t                listen_node_cnt;
	struct nes_cm_node      listen_list;
	spinlock_t              listen_list_lock;

	u32                     mtu;
	u32                     free_tx_pkt_max;
	u32                     rx_pkt_posted;
	struct sk_buff_head     tx_free_list;
	atomic_t                ht_node_cnt;
	struct list_head        connected_nodes;
	/* struct list_head hashtable[NES_CM_HASHTABLE_SIZE]; */
	spinlock_t              ht_lock;

	struct timer_list       tcp_timer;

	struct nes_cm_ops       *api;

	int (*post_event)(struct nes_cm_event *event);
	atomic_t                events_posted;
	struct workqueue_struct *event_wq;
	struct workqueue_struct *disconn_wq;

	atomic_t                node_cnt;
	u64                     aborted_connects;
	u32                     options;

	struct nes_cm_node      *current_listen_node;
};


#define NES_CM_SET_PKT_SIZE        (1 << 1)
#define NES_CM_SET_FREE_PKT_Q_SIZE (1 << 2)

/* CM ops/API for client interface */
struct nes_cm_ops {
	int (*accelerated)(struct nes_cm_core *, struct nes_cm_node *);
	struct nes_cm_listener * (*listen)(struct nes_cm_core *, struct nes_vnic *,
			struct nes_cm_info *);
	int (*stop_listener)(struct nes_cm_core *, struct nes_cm_listener *);
	struct nes_cm_node * (*connect)(struct nes_cm_core *,
			struct nes_vnic *, u16, void *,
			struct nes_cm_info *);
	int (*close)(struct nes_cm_core *, struct nes_cm_node *);
	int (*accept)(struct nes_cm_core *, struct ietf_mpa_frame *,
			struct nes_cm_node *);
	int (*reject)(struct nes_cm_core *, struct ietf_mpa_frame *,
			struct nes_cm_node *);
	void (*recv_pkt)(struct nes_cm_core *, struct nes_vnic *,
			struct sk_buff *);
	int (*destroy_cm_core)(struct nes_cm_core *);
	int (*get)(struct nes_cm_core *);
	int (*set)(struct nes_cm_core *, u32, u32);
};

int schedule_nes_timer(struct nes_cm_node *, struct sk_buff *,
		enum nes_timer_type, int, int);

int nes_cm_disconn(struct nes_qp *);

int nes_accept(struct iw_cm_id *, struct iw_cm_conn_param *);
int nes_reject(struct iw_cm_id *, const void *, u8);
int nes_connect(struct iw_cm_id *, struct iw_cm_conn_param *);
int nes_create_listen(struct iw_cm_id *, int);
int nes_destroy_listen(struct iw_cm_id *);

int nes_cm_recv(struct sk_buff *, struct net_device *);
int nes_cm_start(void);
int nes_cm_stop(void);

#endif			/* NES_CM_H */
Commit	Line	Data
3c2d774c GS	1	/*
	2	* Copyright (c) 2006 - 2008 NetEffect, Inc. All rights reserved.
	3	*
	4	* This software is available to you under a choice of one of two
	5	* licenses. You may choose to be licensed under the terms of the GNU
	6	* General Public License (GPL) Version 2, available from the file
	7	* COPYING in the main directory of this source tree, or the
	8	* OpenIB.org BSD license below:
	9	*
	10	* Redistribution and use in source and binary forms, with or
	11	* without modification, are permitted provided that the following
	12	* conditions are met:
	13	*
	14	* - Redistributions of source code must retain the above
	15	* copyright notice, this list of conditions and the following
	16	* disclaimer.
	17	*
	18	* - Redistributions in binary form must reproduce the above
	19	* copyright notice, this list of conditions and the following
	20	* disclaimer in the documentation and/or other materials
	21	* provided with the distribution.
	22	*
	23	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	24	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	25	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	26	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
	27	* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
	28	* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	29	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	30	* SOFTWARE.
	31	*
	32	*/
	33
	34	#ifndef NES_CM_H
	35	#define NES_CM_H
	36
	37	#define QUEUE_EVENTS
	38
	39	#define NES_MANAGE_APBVT_DEL 0
	40	#define NES_MANAGE_APBVT_ADD 1
	41
	42	/* IETF MPA -- defines, enums, structs */
	43	#define IEFT_MPA_KEY_REQ "MPA ID Req Frame"
	44	#define IEFT_MPA_KEY_REP "MPA ID Rep Frame"
	45	#define IETF_MPA_KEY_SIZE 16
	46	#define IETF_MPA_VERSION 1
	47
	48	enum ietf_mpa_flags {
	49	IETF_MPA_FLAGS_MARKERS = 0x80, /* receive Markers */
	50	IETF_MPA_FLAGS_CRC = 0x40, /* receive Markers */
	51	IETF_MPA_FLAGS_REJECT = 0x20, /* Reject */
	52	};
	53
	54	struct ietf_mpa_frame {
	55	u8 key[IETF_MPA_KEY_SIZE];
	56	u8 flags;
	57	u8 rev;
	58	__be16 priv_data_len;
	59	u8 priv_data[0];
	60	};
	61
	62	#define ietf_mpa_req_resp_frame ietf_mpa_frame
	63
	64	struct nes_v4_quad {
65	u32 rsvd0;
66	__le32 DstIpAdrIndex; /* Only most significant 5 bits are valid */
67	__be32 SrcIpadr;
68	__be16 TcpPorts[2]; /* src is low, dest is high */
69	};
70
71	struct nes_cm_node;
72	enum nes_timer_type {
73	NES_TIMER_TYPE_SEND,
74	NES_TIMER_TYPE_RECV,
75	NES_TIMER_NODE_CLEANUP,
76	NES_TIMER_TYPE_CLOSE,
77	};
78
79	#define MAX_NES_IFS 4
80
81	#define SET_ACK 1
82	#define SET_SYN 2
83	#define SET_FIN 4
84	#define SET_RST 8
85
6492cdf3 FL	86	#define TCP_OPTIONS_PADDING 3
6492cdf3 FL	87
3c2d774c GS	88	struct option_base {
	89	u8 optionnum;
	90	u8 length;
	91	};
	92
	93	enum option_numbers {
	94	OPTION_NUMBER_END,
	95	OPTION_NUMBER_NONE,
	96	OPTION_NUMBER_MSS,
	97	OPTION_NUMBER_WINDOW_SCALE,
	98	OPTION_NUMBER_SACK_PERM,
	99	OPTION_NUMBER_SACK,
	100	OPTION_NUMBER_WRITE0 = 0xbc
	101	};
	102
	103	struct option_mss {
	104	u8 optionnum;
	105	u8 length;
	106	__be16 mss;
	107	};
	108
	109	struct option_windowscale {
	110	u8 optionnum;
	111	u8 length;
	112	u8 shiftcount;
	113	};
	114
	115	union all_known_options {
	116	char as_end;
	117	struct option_base as_base;
	118	struct option_mss as_mss;
	119	struct option_windowscale as_windowscale;
	120	};
	121
	122	struct nes_timer_entry {
	123	struct list_head list;
	124	unsigned long timetosend; /* jiffies */
	125	struct sk_buff *skb;
	126	u32 type;
	127	u32 retrycount;
	128	u32 retranscount;
	129	u32 context;
	130	u32 seq_num;
	131	u32 send_retrans;
	132	int close_when_complete;
	133	struct net_device *netdev;
	134	};
	135
	136	#define NES_DEFAULT_RETRYS 64
	137	#define NES_DEFAULT_RETRANS 8
	138	#ifdef CONFIG_INFINIBAND_NES_DEBUG
	139	#define NES_RETRY_TIMEOUT (1000*HZ/1000)
	140	#else
	141	#define NES_RETRY_TIMEOUT (3000*HZ/1000)
	142	#endif
	143	#define NES_SHORT_TIME (10)
	144	#define NES_LONG_TIME (2000*HZ/1000)
	145
	146	#define NES_CM_HASHTABLE_SIZE 1024
	147	#define NES_CM_TCP_TIMER_INTERVAL 3000
	148	#define NES_CM_DEFAULT_MTU 1540
	149	#define NES_CM_DEFAULT_FRAME_CNT 10
	150	#define NES_CM_THREAD_STACK_SIZE 256
	151	#define NES_CM_DEFAULT_RCV_WND 64240 // before we know that window scaling is allowed
152	#define NES_CM_DEFAULT_RCV_WND_SCALED 256960 // after we know that window scaling is allowed
153	#define NES_CM_DEFAULT_RCV_WND_SCALE 2
154	#define NES_CM_DEFAULT_FREE_PKTS 0x000A
155	#define NES_CM_FREE_PKT_LO_WATERMARK 2
156
157	#define NES_CM_DEFAULT_MSS 536
158
159	#define NES_CM_DEF_SEQ 0x159bf75f
160	#define NES_CM_DEF_LOCAL_ID 0x3b47
161
162	#define NES_CM_DEF_SEQ2 0x18ed5740
163	#define NES_CM_DEF_LOCAL_ID2 0xb807
164
165	typedef u32 nes_addr_t;
166
167	#define nes_cm_tsa_context nes_qp_context
168
169	struct nes_qp;
170
171	/* cm node transition states */
172	enum nes_cm_node_state {
173	NES_CM_STATE_UNKNOWN,
174	NES_CM_STATE_INITED,
175	NES_CM_STATE_LISTENING,
176	NES_CM_STATE_SYN_RCVD,
177	NES_CM_STATE_SYN_SENT,
178	NES_CM_STATE_ONE_SIDE_ESTABLISHED,
179	NES_CM_STATE_ESTABLISHED,
180	NES_CM_STATE_ACCEPTING,
181	NES_CM_STATE_MPAREQ_SENT,
6492cdf3	182	NES_CM_STATE_MPAREQ_RCVD,
3c2d774c GS	183	NES_CM_STATE_TSA,
	184	NES_CM_STATE_FIN_WAIT1,
	185	NES_CM_STATE_FIN_WAIT2,
	186	NES_CM_STATE_CLOSE_WAIT,
	187	NES_CM_STATE_TIME_WAIT,
	188	NES_CM_STATE_LAST_ACK,
	189	NES_CM_STATE_CLOSING,
	190	NES_CM_STATE_CLOSED
	191	};
	192
6492cdf3 FL	193	enum nes_tcpip_pkt_type {
	194	NES_PKT_TYPE_UNKNOWN,
	195	NES_PKT_TYPE_SYN,
	196	NES_PKT_TYPE_SYNACK,
	197	NES_PKT_TYPE_ACK,
	198	NES_PKT_TYPE_FIN,
	199	NES_PKT_TYPE_RST
	200	};
	201
	202
3c2d774c GS	203	/* type of nes connection */
	204	enum nes_cm_conn_type {
	205	NES_CM_IWARP_CONN_TYPE,
	206	};
	207
	208	/* CM context params */
	209	struct nes_cm_tcp_context {
	210	u8 client;
	211
	212	u32 loc_seq_num;
	213	u32 loc_ack_num;
	214	u32 rem_ack_num;
	215	u32 rcv_nxt;
	216
	217	u32 loc_id;
	218	u32 rem_id;
	219
	220	u32 snd_wnd;
	221	u32 max_snd_wnd;
	222
	223	u32 rcv_wnd;
	224	u32 mss;
	225	u8 snd_wscale;
	226	u8 rcv_wscale;
	227
	228	struct nes_cm_tsa_context tsa_cntxt;
	229	struct timeval sent_ts;
	230	};
	231
	232
	233	enum nes_cm_listener_state {
	234	NES_CM_LISTENER_PASSIVE_STATE=1,
	235	NES_CM_LISTENER_ACTIVE_STATE=2,
	236	NES_CM_LISTENER_EITHER_STATE=3
	237	};
	238
	239	struct nes_cm_listener {
	240	struct list_head list;
3c2d774c GS	241	struct nes_cm_core *cm_core;
	242	u8 loc_mac[ETH_ALEN];
	243	nes_addr_t loc_addr;
	244	u16 loc_port;
	245	struct iw_cm_id *cm_id;
	246	enum nes_cm_conn_type conn_type;
	247	atomic_t ref_count;
	248	struct nes_vnic *nesvnic;
	249	atomic_t pend_accepts_cnt;
	250	int backlog;
	251	enum nes_cm_listener_state listener_state;
	252	u32 reused_node;
	253	};
	254
	255	/* per connection node and node state information */
	256	struct nes_cm_node {
3c2d774c GS	257	u32 hashkey;
	258
	259	nes_addr_t loc_addr, rem_addr;
	260	u16 loc_port, rem_port;
	261
	262	u8 loc_mac[ETH_ALEN];
	263	u8 rem_mac[ETH_ALEN];
	264
	265	enum nes_cm_node_state state;
	266	struct nes_cm_tcp_context tcp_cntxt;
	267	struct nes_cm_core *cm_core;
	268	struct sk_buff_head resend_list;
	269	atomic_t ref_count;
	270	struct net_device *netdev;
	271
	272	struct nes_cm_node *loopbackpartner;
6492cdf3 FL	273
	274	struct nes_timer_entry *send_entry;
	275
3c2d774c GS	276	spinlock_t retrans_list_lock;
	277	struct list_head recv_list;
	278	spinlock_t recv_list_lock;
	279
	280	int send_write0;
	281	union {
	282	struct ietf_mpa_frame mpa_frame;
	283	u8 mpa_frame_buf[NES_CM_DEFAULT_MTU];
	284	};
	285	u16 mpa_frame_size;
	286	struct iw_cm_id *cm_id;
	287	struct list_head list;
	288	int accelerated;
	289	struct nes_cm_listener *listener;
	290	enum nes_cm_conn_type conn_type;
	291	struct nes_vnic *nesvnic;
	292	int apbvt_set;
	293	int accept_pend;
6492cdf3 FL	294	int freed;
6492cdf3 FL	295	struct nes_qp *nesqp;
3c2d774c GS	296	};
	297
	298	/* structure for client or CM to fill when making CM api calls. */
	299	/* - only need to set relevant data, based on op. */
	300	struct nes_cm_info {
	301	union {
	302	struct iw_cm_id *cm_id;
	303	struct net_device *netdev;
	304	};
	305
	306	u16 loc_port;
	307	u16 rem_port;
	308	nes_addr_t loc_addr;
	309	nes_addr_t rem_addr;
	310
	311	enum nes_cm_conn_type conn_type;
	312	int backlog;
	313	};
	314
	315	/* CM event codes */
	316	enum nes_cm_event_type {
	317	NES_CM_EVENT_UNKNOWN,
	318	NES_CM_EVENT_ESTABLISHED,
	319	NES_CM_EVENT_MPA_REQ,
	320	NES_CM_EVENT_MPA_CONNECT,
	321	NES_CM_EVENT_MPA_ACCEPT,
	322	NES_CM_EVENT_MPA_ESTABLISHED,
	323	NES_CM_EVENT_CONNECTED,
	324	NES_CM_EVENT_CLOSED,
	325	NES_CM_EVENT_RESET,
	326	NES_CM_EVENT_DROPPED_PKT,
	327	NES_CM_EVENT_CLOSE_IMMED,
	328	NES_CM_EVENT_CLOSE_HARD,
	329	NES_CM_EVENT_CLOSE_CLEAN,
	330	NES_CM_EVENT_ABORTED,
	331	NES_CM_EVENT_SEND_FIRST
	332	};
	333
	334	/* event to post to CM event handler */
	335	struct nes_cm_event {
	336	enum nes_cm_event_type type;
	337
	338	struct nes_cm_info cm_info;
	339	struct work_struct event_work;
	340	struct nes_cm_node *cm_node;
	341	};
	342
	343	struct nes_cm_core {
	344	enum nes_cm_node_state state;
3c2d774c GS	345
	346	atomic_t listen_node_cnt;
	347	struct nes_cm_node listen_list;
	348	spinlock_t listen_list_lock;
	349
	350	u32 mtu;
	351	u32 free_tx_pkt_max;
	352	u32 rx_pkt_posted;
	353	struct sk_buff_head tx_free_list;
	354	atomic_t ht_node_cnt;
	355	struct list_head connected_nodes;
	356	/* struct list_head hashtable[NES_CM_HASHTABLE_SIZE]; */
	357	spinlock_t ht_lock;
	358
	359	struct timer_list tcp_timer;
	360
	361	struct nes_cm_ops *api;
	362
	363	int (post_event)(struct nes_cm_event event);
	364	atomic_t events_posted;
	365	struct workqueue_struct *event_wq;
	366	struct workqueue_struct *disconn_wq;
	367
	368	atomic_t node_cnt;
	369	u64 aborted_connects;
	370	u32 options;
	371
	372	struct nes_cm_node *current_listen_node;
	373	};
	374
	375
	376	#define NES_CM_SET_PKT_SIZE (1 << 1)
	377	#define NES_CM_SET_FREE_PKT_Q_SIZE (1 << 2)
	378
	379	/* CM ops/API for client interface */
	380	struct nes_cm_ops {
	381	int (accelerated)(struct nes_cm_core , struct nes_cm_node *);
	382	struct nes_cm_listener * (listen)(struct nes_cm_core , struct nes_vnic *,
	383	struct nes_cm_info *);
	384	int (stop_listener)(struct nes_cm_core , struct nes_cm_listener *);
	385	struct nes_cm_node * (connect)(struct nes_cm_core ,
6492cdf3	386	struct nes_vnic , u16, void ,
3c2d774c GS	387	struct nes_cm_info *);
	388	int (close)(struct nes_cm_core , struct nes_cm_node *);
	389	int (accept)(struct nes_cm_core , struct ietf_mpa_frame *,
	390	struct nes_cm_node *);
	391	int (reject)(struct nes_cm_core , struct ietf_mpa_frame *,
	392	struct nes_cm_node *);
6492cdf3	393	void (recv_pkt)(struct nes_cm_core , struct nes_vnic *,
3c2d774c GS	394	struct sk_buff *);
	395	int (destroy_cm_core)(struct nes_cm_core );
	396	int (get)(struct nes_cm_core );
	397	int (set)(struct nes_cm_core , u32, u32);
	398	};
	399
3c2d774c GS	400	int schedule_nes_timer(struct nes_cm_node , struct sk_buff ,
3c2d774c GS	401	enum nes_timer_type, int, int);
3c2d774c GS	402
3c2d774c GS	403	int nes_cm_disconn(struct nes_qp *);
3c2d774c GS	404
	405	int nes_accept(struct iw_cm_id , struct iw_cm_conn_param );
	406	int nes_reject(struct iw_cm_id , const void , u8);
	407	int nes_connect(struct iw_cm_id , struct iw_cm_conn_param );
	408	int nes_create_listen(struct iw_cm_id *, int);
	409	int nes_destroy_listen(struct iw_cm_id *);
	410
	411	int nes_cm_recv(struct sk_buff , struct net_device );
	412	int nes_cm_start(void);
	413	int nes_cm_stop(void);
	414
3c2d774c	415	#endif /* NES_CM_H */