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

/*
 * Copyright (c) 2006 - 2009 Intel-NE, 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

#define NES_MPA_REQUEST_ACCEPT  1
#define NES_MPA_REQUEST_REJECT  2

/* 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 NES_PASSIVE_STATE_INDICATED	0
#define NES_DO_NOT_SEND_RESET_EVENT	1
#define NES_SEND_RESET_EVENT		2

#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_MAX_TIMEOUT     ((unsigned long) (12*HZ))

#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
#define	MAX_CM_BUFFER	512


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_MPAREJ_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 {
	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 nes_timer_entry  *recv_entry;

	int                       send_write0;
	union {
		struct ietf_mpa_frame mpa_frame;
		u8                    mpa_frame_buf[MAX_CM_BUFFER];
	};
	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;
	struct list_head	timer_entry;
	struct list_head	reset_entry;
	struct nes_qp		*nesqp;
	atomic_t 		passive_state;
};

/* 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_REJECT,
	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;
	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 *);
	int (*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_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	1	/*
cd6853d3	2	* Copyright (c) 2006 - 2009 Intel-NE, Inc. All rights reserved.
3c2d774c GS	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
9d5ab133 FL	42	#define NES_MPA_REQUEST_ACCEPT 1
	43	#define NES_MPA_REQUEST_REJECT 2
	44
3c2d774c GS	45	/* IETF MPA -- defines, enums, structs */
	46	#define IEFT_MPA_KEY_REQ "MPA ID Req Frame"
	47	#define IEFT_MPA_KEY_REP "MPA ID Rep Frame"
	48	#define IETF_MPA_KEY_SIZE 16
	49	#define IETF_MPA_VERSION 1
	50
	51	enum ietf_mpa_flags {
	52	IETF_MPA_FLAGS_MARKERS = 0x80, /* receive Markers */
	53	IETF_MPA_FLAGS_CRC = 0x40, /* receive Markers */
	54	IETF_MPA_FLAGS_REJECT = 0x20, /* Reject */
	55	};
	56
	57	struct ietf_mpa_frame {
	58	u8 key[IETF_MPA_KEY_SIZE];
	59	u8 flags;
	60	u8 rev;
	61	__be16 priv_data_len;
	62	u8 priv_data[0];
	63	};
	64
	65	#define ietf_mpa_req_resp_frame ietf_mpa_frame
	66
	67	struct nes_v4_quad {
	68	u32 rsvd0;
	69	__le32 DstIpAdrIndex; /* Only most significant 5 bits are valid */
	70	__be32 SrcIpadr;
	71	__be16 TcpPorts[2]; /* src is low, dest is high */
	72	};
	73
	74	struct nes_cm_node;
	75	enum nes_timer_type {
	76	NES_TIMER_TYPE_SEND,
	77	NES_TIMER_TYPE_RECV,
	78	NES_TIMER_NODE_CLEANUP,
	79	NES_TIMER_TYPE_CLOSE,
	80	};
	81
183ecfa3 FL	82	#define NES_PASSIVE_STATE_INDICATED 0
	83	#define NES_DO_NOT_SEND_RESET_EVENT 1
	84	#define NES_SEND_RESET_EVENT 2
	85
3c2d774c GS	86	#define MAX_NES_IFS 4
	87
	88	#define SET_ACK 1
	89	#define SET_SYN 2
	90	#define SET_FIN 4
	91	#define SET_RST 8
	92
6492cdf3 FL	93	#define TCP_OPTIONS_PADDING 3
6492cdf3 FL	94
3c2d774c GS	95	struct option_base {
	96	u8 optionnum;
	97	u8 length;
	98	};
	99
	100	enum option_numbers {
	101	OPTION_NUMBER_END,
	102	OPTION_NUMBER_NONE,
	103	OPTION_NUMBER_MSS,
	104	OPTION_NUMBER_WINDOW_SCALE,
	105	OPTION_NUMBER_SACK_PERM,
	106	OPTION_NUMBER_SACK,
	107	OPTION_NUMBER_WRITE0 = 0xbc
	108	};
	109
	110	struct option_mss {
	111	u8 optionnum;
	112	u8 length;
	113	__be16 mss;
	114	};
	115
	116	struct option_windowscale {
	117	u8 optionnum;
	118	u8 length;
	119	u8 shiftcount;
	120	};
	121
	122	union all_known_options {
	123	char as_end;
	124	struct option_base as_base;
	125	struct option_mss as_mss;
	126	struct option_windowscale as_windowscale;
	127	};
	128
	129	struct nes_timer_entry {
	130	struct list_head list;
	131	unsigned long timetosend; /* jiffies */
	132	struct sk_buff *skb;
	133	u32 type;
	134	u32 retrycount;
	135	u32 retranscount;
	136	u32 context;
	137	u32 seq_num;
	138	u32 send_retrans;
	139	int close_when_complete;
	140	struct net_device *netdev;
	141	};
	142
	143	#define NES_DEFAULT_RETRYS 64
	144	#define NES_DEFAULT_RETRANS 8
	145	#ifdef CONFIG_INFINIBAND_NES_DEBUG
	146	#define NES_RETRY_TIMEOUT (1000*HZ/1000)
	147	#else
	148	#define NES_RETRY_TIMEOUT (3000*HZ/1000)
	149	#endif
	150	#define NES_SHORT_TIME (10)
	151	#define NES_LONG_TIME (2000*HZ/1000)
4e9c3900	152	#define NES_MAX_TIMEOUT ((unsigned long) (12*HZ))
3c2d774c GS	153
	154	#define NES_CM_HASHTABLE_SIZE 1024
	155	#define NES_CM_TCP_TIMER_INTERVAL 3000
	156	#define NES_CM_DEFAULT_MTU 1540
	157	#define NES_CM_DEFAULT_FRAME_CNT 10
	158	#define NES_CM_THREAD_STACK_SIZE 256
	159	#define NES_CM_DEFAULT_RCV_WND 64240 // before we know that window scaling is allowed
	160	#define NES_CM_DEFAULT_RCV_WND_SCALED 256960 // after we know that window scaling is allowed
	161	#define NES_CM_DEFAULT_RCV_WND_SCALE 2
	162	#define NES_CM_DEFAULT_FREE_PKTS 0x000A
	163	#define NES_CM_FREE_PKT_LO_WATERMARK 2
	164
	165	#define NES_CM_DEFAULT_MSS 536
	166
	167	#define NES_CM_DEF_SEQ 0x159bf75f
	168	#define NES_CM_DEF_LOCAL_ID 0x3b47
	169
	170	#define NES_CM_DEF_SEQ2 0x18ed5740
	171	#define NES_CM_DEF_LOCAL_ID2 0xb807
e189062a FL	172	#define MAX_CM_BUFFER 512
e189062a FL	173
3c2d774c GS	174
	175	typedef u32 nes_addr_t;
	176
	177	#define nes_cm_tsa_context nes_qp_context
	178
	179	struct nes_qp;
	180
	181	/* cm node transition states */
	182	enum nes_cm_node_state {
	183	NES_CM_STATE_UNKNOWN,
	184	NES_CM_STATE_INITED,
	185	NES_CM_STATE_LISTENING,
	186	NES_CM_STATE_SYN_RCVD,
	187	NES_CM_STATE_SYN_SENT,
	188	NES_CM_STATE_ONE_SIDE_ESTABLISHED,
	189	NES_CM_STATE_ESTABLISHED,
	190	NES_CM_STATE_ACCEPTING,
	191	NES_CM_STATE_MPAREQ_SENT,
6492cdf3	192	NES_CM_STATE_MPAREQ_RCVD,
9d5ab133	193	NES_CM_STATE_MPAREJ_RCVD,
3c2d774c GS	194	NES_CM_STATE_TSA,
	195	NES_CM_STATE_FIN_WAIT1,
	196	NES_CM_STATE_FIN_WAIT2,
	197	NES_CM_STATE_CLOSE_WAIT,
	198	NES_CM_STATE_TIME_WAIT,
	199	NES_CM_STATE_LAST_ACK,
	200	NES_CM_STATE_CLOSING,
	201	NES_CM_STATE_CLOSED
	202	};
	203
6492cdf3 FL	204	enum nes_tcpip_pkt_type {
	205	NES_PKT_TYPE_UNKNOWN,
	206	NES_PKT_TYPE_SYN,
	207	NES_PKT_TYPE_SYNACK,
	208	NES_PKT_TYPE_ACK,
	209	NES_PKT_TYPE_FIN,
	210	NES_PKT_TYPE_RST
	211	};
	212
	213
3c2d774c GS	214	/* type of nes connection */
	215	enum nes_cm_conn_type {
	216	NES_CM_IWARP_CONN_TYPE,
	217	};
	218
	219	/* CM context params */
	220	struct nes_cm_tcp_context {
	221	u8 client;
	222
	223	u32 loc_seq_num;
	224	u32 loc_ack_num;
	225	u32 rem_ack_num;
	226	u32 rcv_nxt;
	227
	228	u32 loc_id;
	229	u32 rem_id;
	230
	231	u32 snd_wnd;
	232	u32 max_snd_wnd;
	233
	234	u32 rcv_wnd;
	235	u32 mss;
	236	u8 snd_wscale;
	237	u8 rcv_wscale;
	238
	239	struct nes_cm_tsa_context tsa_cntxt;
	240	struct timeval sent_ts;
	241	};
	242
	243
	244	enum nes_cm_listener_state {
	245	NES_CM_LISTENER_PASSIVE_STATE=1,
	246	NES_CM_LISTENER_ACTIVE_STATE=2,
	247	NES_CM_LISTENER_EITHER_STATE=3
	248	};
	249
	250	struct nes_cm_listener {
	251	struct list_head list;
3c2d774c GS	252	struct nes_cm_core *cm_core;
	253	u8 loc_mac[ETH_ALEN];
	254	nes_addr_t loc_addr;
	255	u16 loc_port;
	256	struct iw_cm_id *cm_id;
	257	enum nes_cm_conn_type conn_type;
	258	atomic_t ref_count;
	259	struct nes_vnic *nesvnic;
	260	atomic_t pend_accepts_cnt;
	261	int backlog;
	262	enum nes_cm_listener_state listener_state;
	263	u32 reused_node;
	264	};
	265
	266	/* per connection node and node state information */
	267	struct nes_cm_node {
3c2d774c GS	268	nes_addr_t loc_addr, rem_addr;
	269	u16 loc_port, rem_port;
	270
	271	u8 loc_mac[ETH_ALEN];
	272	u8 rem_mac[ETH_ALEN];
	273
	274	enum nes_cm_node_state state;
	275	struct nes_cm_tcp_context tcp_cntxt;
	276	struct nes_cm_core *cm_core;
	277	struct sk_buff_head resend_list;
	278	atomic_t ref_count;
	279	struct net_device *netdev;
	280
	281	struct nes_cm_node *loopbackpartner;
6492cdf3 FL	282
	283	struct nes_timer_entry *send_entry;
	284
3c2d774c	285	spinlock_t retrans_list_lock;
9d5ab133	286	struct nes_timer_entry *recv_entry;
3c2d774c GS	287
	288	int send_write0;
	289	union {
	290	struct ietf_mpa_frame mpa_frame;
9d5ab133	291	u8 mpa_frame_buf[MAX_CM_BUFFER];
3c2d774c GS	292	};
	293	u16 mpa_frame_size;
	294	struct iw_cm_id *cm_id;
	295	struct list_head list;
	296	int accelerated;
	297	struct nes_cm_listener *listener;
	298	enum nes_cm_conn_type conn_type;
	299	struct nes_vnic *nesvnic;
	300	int apbvt_set;
	301	int accept_pend;
879e5bd5 FL	302	struct list_head timer_entry;
879e5bd5 FL	303	struct list_head reset_entry;
6492cdf3	304	struct nes_qp *nesqp;
183ecfa3	305	atomic_t passive_state;
3c2d774c GS	306	};
	307
	308	/* structure for client or CM to fill when making CM api calls. */
	309	/* - only need to set relevant data, based on op. */
	310	struct nes_cm_info {
	311	union {
	312	struct iw_cm_id *cm_id;
	313	struct net_device *netdev;
	314	};
	315
	316	u16 loc_port;
	317	u16 rem_port;
	318	nes_addr_t loc_addr;
	319	nes_addr_t rem_addr;
	320
	321	enum nes_cm_conn_type conn_type;
	322	int backlog;
	323	};
	324
	325	/* CM event codes */
	326	enum nes_cm_event_type {
	327	NES_CM_EVENT_UNKNOWN,
	328	NES_CM_EVENT_ESTABLISHED,
	329	NES_CM_EVENT_MPA_REQ,
	330	NES_CM_EVENT_MPA_CONNECT,
	331	NES_CM_EVENT_MPA_ACCEPT,
9d5ab133	332	NES_CM_EVENT_MPA_REJECT,
3c2d774c GS	333	NES_CM_EVENT_MPA_ESTABLISHED,
	334	NES_CM_EVENT_CONNECTED,
	335	NES_CM_EVENT_CLOSED,
	336	NES_CM_EVENT_RESET,
	337	NES_CM_EVENT_DROPPED_PKT,
	338	NES_CM_EVENT_CLOSE_IMMED,
	339	NES_CM_EVENT_CLOSE_HARD,
	340	NES_CM_EVENT_CLOSE_CLEAN,
	341	NES_CM_EVENT_ABORTED,
	342	NES_CM_EVENT_SEND_FIRST
	343	};
	344
	345	/* event to post to CM event handler */
	346	struct nes_cm_event {
	347	enum nes_cm_event_type type;
	348
	349	struct nes_cm_info cm_info;
	350	struct work_struct event_work;
	351	struct nes_cm_node *cm_node;
	352	};
	353
	354	struct nes_cm_core {
	355	enum nes_cm_node_state state;
3c2d774c GS	356
	357	atomic_t listen_node_cnt;
	358	struct nes_cm_node listen_list;
	359	spinlock_t listen_list_lock;
	360
	361	u32 mtu;
	362	u32 free_tx_pkt_max;
	363	u32 rx_pkt_posted;
3c2d774c GS	364	atomic_t ht_node_cnt;
	365	struct list_head connected_nodes;
	366	/* struct list_head hashtable[NES_CM_HASHTABLE_SIZE]; */
	367	spinlock_t ht_lock;
	368
	369	struct timer_list tcp_timer;
	370
	371	struct nes_cm_ops *api;
	372
	373	int (post_event)(struct nes_cm_event event);
	374	atomic_t events_posted;
	375	struct workqueue_struct *event_wq;
	376	struct workqueue_struct *disconn_wq;
	377
	378	atomic_t node_cnt;
	379	u64 aborted_connects;
	380	u32 options;
	381
	382	struct nes_cm_node *current_listen_node;
	383	};
	384
	385
	386	#define NES_CM_SET_PKT_SIZE (1 << 1)
	387	#define NES_CM_SET_FREE_PKT_Q_SIZE (1 << 2)
	388
	389	/* CM ops/API for client interface */
	390	struct nes_cm_ops {
	391	int (accelerated)(struct nes_cm_core , struct nes_cm_node *);
	392	struct nes_cm_listener * (listen)(struct nes_cm_core , struct nes_vnic *,
	393	struct nes_cm_info *);
	394	int (stop_listener)(struct nes_cm_core , struct nes_cm_listener *);
	395	struct nes_cm_node * (connect)(struct nes_cm_core ,
6492cdf3	396	struct nes_vnic , u16, void ,
3c2d774c GS	397	struct nes_cm_info *);
	398	int (close)(struct nes_cm_core , struct nes_cm_node *);
	399	int (accept)(struct nes_cm_core , struct ietf_mpa_frame *,
	400	struct nes_cm_node *);
	401	int (reject)(struct nes_cm_core , struct ietf_mpa_frame *,
	402	struct nes_cm_node *);
4a14f6a7	403	int (recv_pkt)(struct nes_cm_core , struct nes_vnic *,
3c2d774c GS	404	struct sk_buff *);
	405	int (destroy_cm_core)(struct nes_cm_core );
	406	int (get)(struct nes_cm_core );
	407	int (set)(struct nes_cm_core , u32, u32);
	408	};
	409
3c2d774c GS	410	int schedule_nes_timer(struct nes_cm_node , struct sk_buff ,
3c2d774c GS	411	enum nes_timer_type, int, int);
3c2d774c	412
3c2d774c GS	413	int nes_accept(struct iw_cm_id , struct iw_cm_conn_param );
	414	int nes_reject(struct iw_cm_id , const void , u8);
	415	int nes_connect(struct iw_cm_id , struct iw_cm_conn_param );
	416	int nes_create_listen(struct iw_cm_id *, int);
	417	int nes_destroy_listen(struct iw_cm_id *);
	418
	419	int nes_cm_recv(struct sk_buff , struct net_device );
	420	int nes_cm_start(void);
	421	int nes_cm_stop(void);
	422
3c2d774c	423	#endif /* NES_CM_H */