427 lines
11 KiB
C
427 lines
11 KiB
C
/*
|
|
* Copyright (c) 2006 - 2009 Intel Corporation. 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
|
|
#define IETF_MAX_PRIV_DATA_LEN 512
|
|
#define IETF_MPA_FRAME_SIZE 20
|
|
|
|
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 (IETF_MPA_FRAME_SIZE + IETF_MAX_PRIV_DATA_LEN)
|
|
|
|
|
|
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_LISTENER_DESTROYED,
|
|
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 */
|