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nes_cm.h
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1 /*
2  * Copyright (c) 2006 - 2011 Intel Corporation. All rights reserved.
3  *
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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 #define NES_MPA_REQUEST_ACCEPT 1
43 #define NES_MPA_REQUEST_REJECT 2
44 
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 #define IETF_MAX_PRIV_DATA_LEN 512
51 #define IETF_MPA_FRAME_SIZE 20
52 #define IETF_RTR_MSG_SIZE 4
53 #define IETF_MPA_V2_FLAG 0x10
54 
55 /* IETF RTR MSG Fields */
56 #define IETF_PEER_TO_PEER 0x8000
57 #define IETF_FLPDU_ZERO_LEN 0x4000
58 #define IETF_RDMA0_WRITE 0x8000
59 #define IETF_RDMA0_READ 0x4000
60 #define IETF_NO_IRD_ORD 0x3FFF
61 
63  IETF_MPA_FLAGS_MARKERS = 0x80, /* receive Markers */
64  IETF_MPA_FLAGS_CRC = 0x40, /* receive Markers */
65  IETF_MPA_FLAGS_REJECT = 0x20, /* Reject */
66 };
67 
68 struct ietf_mpa_v1 {
74 };
75 
76 #define ietf_mpa_req_resp_frame ietf_mpa_frame
77 
78 struct ietf_rtr_msg {
81 };
82 
83 struct ietf_mpa_v2 {
90 };
91 
92 struct nes_v4_quad {
94  __le32 DstIpAdrIndex; /* Only most significant 5 bits are valid */
96  __be16 TcpPorts[2]; /* src is low, dest is high */
97 };
98 
99 struct nes_cm_node;
105 };
106 
107 #define NES_PASSIVE_STATE_INDICATED 0
108 #define NES_DO_NOT_SEND_RESET_EVENT 1
109 #define NES_SEND_RESET_EVENT 2
110 
111 #define MAX_NES_IFS 4
112 
113 #define SET_ACK 1
114 #define SET_SYN 2
115 #define SET_FIN 4
116 #define SET_RST 8
117 
118 #define TCP_OPTIONS_PADDING 3
119 
120 struct option_base {
123 };
124 
133 };
134 
135 struct option_mss {
139 };
140 
145 };
146 
148  char as_end;
152 };
153 
155  struct list_head list;
156  unsigned long timetosend; /* jiffies */
157  struct sk_buff *skb;
166 };
167 
168 #define NES_DEFAULT_RETRYS 64
169 #define NES_DEFAULT_RETRANS 8
170 #ifdef CONFIG_INFINIBAND_NES_DEBUG
171 #define NES_RETRY_TIMEOUT (1000*HZ/1000)
172 #else
173 #define NES_RETRY_TIMEOUT (3000*HZ/1000)
174 #endif
175 #define NES_SHORT_TIME (10)
176 #define NES_LONG_TIME (2000*HZ/1000)
177 #define NES_MAX_TIMEOUT ((unsigned long) (12*HZ))
178 
179 #define NES_CM_HASHTABLE_SIZE 1024
180 #define NES_CM_TCP_TIMER_INTERVAL 3000
181 #define NES_CM_DEFAULT_MTU 1540
182 #define NES_CM_DEFAULT_FRAME_CNT 10
183 #define NES_CM_THREAD_STACK_SIZE 256
184 #define NES_CM_DEFAULT_RCV_WND 64240 // before we know that window scaling is allowed
185 #define NES_CM_DEFAULT_RCV_WND_SCALED 256960 // after we know that window scaling is allowed
186 #define NES_CM_DEFAULT_RCV_WND_SCALE 2
187 #define NES_CM_DEFAULT_FREE_PKTS 0x000A
188 #define NES_CM_FREE_PKT_LO_WATERMARK 2
189 
190 #define NES_CM_DEFAULT_MSS 536
191 
192 #define NES_CM_DEF_SEQ 0x159bf75f
193 #define NES_CM_DEF_LOCAL_ID 0x3b47
194 
195 #define NES_CM_DEF_SEQ2 0x18ed5740
196 #define NES_CM_DEF_LOCAL_ID2 0xb807
197 #define MAX_CM_BUFFER (IETF_MPA_FRAME_SIZE + IETF_RTR_MSG_SIZE + IETF_MAX_PRIV_DATA_LEN)
198 
199 typedef u32 nes_addr_t;
200 
201 #define nes_cm_tsa_context nes_qp_context
202 
203 struct nes_qp;
204 
205 /* cm node transition states */
227 };
228 
232 };
233 
237 };
238 
242 };
243 
251 };
252 
253 
254 /* type of nes connection */
257 };
258 
259 /* CM context params */
262 
267 
270 
273 
278 
280  struct timeval sent_ts;
281 };
282 
283 
288 };
289 
291  struct list_head list;
296  struct iw_cm_id *cm_id;
299  struct nes_vnic *nesvnic;
301  int backlog;
304 };
305 
306 /* per connection node and node state information */
307 struct nes_cm_node {
310 
313 
320 
322 
327 
328  union {
332  };
336 
338  struct iw_cm_id *cm_id;
339  struct list_head list;
343  struct nes_vnic *nesvnic;
348  struct nes_qp *nesqp;
350 };
351 
352 /* structure for client or CM to fill when making CM api calls. */
353 /* - only need to set relevant data, based on op. */
354 struct nes_cm_info {
355  union {
356  struct iw_cm_id *cm_id;
358  };
359 
364 
366  int backlog;
367 };
368 
369 /* CM event codes */
387 };
388 
389 /* event to post to CM event handler */
390 struct nes_cm_event {
392 
396 };
397 
398 struct nes_cm_core {
400 
404 
410  /* struct list_head hashtable[NES_CM_HASHTABLE_SIZE]; */
412 
414 
415  struct nes_cm_ops *api;
416 
421 
425 
427 };
428 
429 
430 #define NES_CM_SET_PKT_SIZE (1 << 1)
431 #define NES_CM_SET_FREE_PKT_Q_SIZE (1 << 2)
432 
433 /* CM ops/API for client interface */
434 struct nes_cm_ops {
435  int (*accelerated)(struct nes_cm_core *, struct nes_cm_node *);
436  struct nes_cm_listener * (*listen)(struct nes_cm_core *, struct nes_vnic *,
437  struct nes_cm_info *);
439  struct nes_cm_node * (*connect)(struct nes_cm_core *,
440  struct nes_vnic *, u16, void *,
441  struct nes_cm_info *);
442  int (*close)(struct nes_cm_core *, struct nes_cm_node *);
443  int (*accept)(struct nes_cm_core *, struct nes_cm_node *);
444  int (*reject)(struct nes_cm_core *, struct nes_cm_node *);
445  int (*recv_pkt)(struct nes_cm_core *, struct nes_vnic *,
446  struct sk_buff *);
448  int (*get)(struct nes_cm_core *);
449  int (*set)(struct nes_cm_core *, u32, u32);
450 };
451 
452 int schedule_nes_timer(struct nes_cm_node *, struct sk_buff *,
453  enum nes_timer_type, int, int);
454 
455 int nes_accept(struct iw_cm_id *, struct iw_cm_conn_param *);
456 int nes_reject(struct iw_cm_id *, const void *, u8);
457 int nes_connect(struct iw_cm_id *, struct iw_cm_conn_param *);
458 int nes_create_listen(struct iw_cm_id *, int);
459 int nes_destroy_listen(struct iw_cm_id *);
460 
461 int nes_cm_recv(struct sk_buff *, struct net_device *);
462 int nes_cm_start(void);
463 int nes_cm_stop(void);
464 int nes_add_ref_cm_node(struct nes_cm_node *cm_node);
465 int nes_rem_ref_cm_node(struct nes_cm_node *cm_node);
466 
467 #endif /* NES_CM_H */