Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 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 | |
Faisal Latif | 183ecfa | 2008-11-21 20:50:46 -0600 | [diff] [blame] | 79 | #define NES_PASSIVE_STATE_INDICATED 0 |
| 80 | #define NES_DO_NOT_SEND_RESET_EVENT 1 |
| 81 | #define NES_SEND_RESET_EVENT 2 |
| 82 | |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 83 | #define MAX_NES_IFS 4 |
| 84 | |
| 85 | #define SET_ACK 1 |
| 86 | #define SET_SYN 2 |
| 87 | #define SET_FIN 4 |
| 88 | #define SET_RST 8 |
| 89 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 90 | #define TCP_OPTIONS_PADDING 3 |
| 91 | |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 92 | struct option_base { |
| 93 | u8 optionnum; |
| 94 | u8 length; |
| 95 | }; |
| 96 | |
| 97 | enum option_numbers { |
| 98 | OPTION_NUMBER_END, |
| 99 | OPTION_NUMBER_NONE, |
| 100 | OPTION_NUMBER_MSS, |
| 101 | OPTION_NUMBER_WINDOW_SCALE, |
| 102 | OPTION_NUMBER_SACK_PERM, |
| 103 | OPTION_NUMBER_SACK, |
| 104 | OPTION_NUMBER_WRITE0 = 0xbc |
| 105 | }; |
| 106 | |
| 107 | struct option_mss { |
| 108 | u8 optionnum; |
| 109 | u8 length; |
| 110 | __be16 mss; |
| 111 | }; |
| 112 | |
| 113 | struct option_windowscale { |
| 114 | u8 optionnum; |
| 115 | u8 length; |
| 116 | u8 shiftcount; |
| 117 | }; |
| 118 | |
| 119 | union all_known_options { |
| 120 | char as_end; |
| 121 | struct option_base as_base; |
| 122 | struct option_mss as_mss; |
| 123 | struct option_windowscale as_windowscale; |
| 124 | }; |
| 125 | |
| 126 | struct nes_timer_entry { |
| 127 | struct list_head list; |
| 128 | unsigned long timetosend; /* jiffies */ |
| 129 | struct sk_buff *skb; |
| 130 | u32 type; |
| 131 | u32 retrycount; |
| 132 | u32 retranscount; |
| 133 | u32 context; |
| 134 | u32 seq_num; |
| 135 | u32 send_retrans; |
| 136 | int close_when_complete; |
| 137 | struct net_device *netdev; |
| 138 | }; |
| 139 | |
| 140 | #define NES_DEFAULT_RETRYS 64 |
| 141 | #define NES_DEFAULT_RETRANS 8 |
| 142 | #ifdef CONFIG_INFINIBAND_NES_DEBUG |
| 143 | #define NES_RETRY_TIMEOUT (1000*HZ/1000) |
| 144 | #else |
| 145 | #define NES_RETRY_TIMEOUT (3000*HZ/1000) |
| 146 | #endif |
| 147 | #define NES_SHORT_TIME (10) |
| 148 | #define NES_LONG_TIME (2000*HZ/1000) |
| 149 | |
| 150 | #define NES_CM_HASHTABLE_SIZE 1024 |
| 151 | #define NES_CM_TCP_TIMER_INTERVAL 3000 |
| 152 | #define NES_CM_DEFAULT_MTU 1540 |
| 153 | #define NES_CM_DEFAULT_FRAME_CNT 10 |
| 154 | #define NES_CM_THREAD_STACK_SIZE 256 |
| 155 | #define NES_CM_DEFAULT_RCV_WND 64240 // before we know that window scaling is allowed |
| 156 | #define NES_CM_DEFAULT_RCV_WND_SCALED 256960 // after we know that window scaling is allowed |
| 157 | #define NES_CM_DEFAULT_RCV_WND_SCALE 2 |
| 158 | #define NES_CM_DEFAULT_FREE_PKTS 0x000A |
| 159 | #define NES_CM_FREE_PKT_LO_WATERMARK 2 |
| 160 | |
| 161 | #define NES_CM_DEFAULT_MSS 536 |
| 162 | |
| 163 | #define NES_CM_DEF_SEQ 0x159bf75f |
| 164 | #define NES_CM_DEF_LOCAL_ID 0x3b47 |
| 165 | |
| 166 | #define NES_CM_DEF_SEQ2 0x18ed5740 |
| 167 | #define NES_CM_DEF_LOCAL_ID2 0xb807 |
Faisal Latif | e189062 | 2008-12-24 20:30:04 -0800 | [diff] [blame] | 168 | #define MAX_CM_BUFFER 512 |
| 169 | |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 170 | |
| 171 | typedef u32 nes_addr_t; |
| 172 | |
| 173 | #define nes_cm_tsa_context nes_qp_context |
| 174 | |
| 175 | struct nes_qp; |
| 176 | |
| 177 | /* cm node transition states */ |
| 178 | enum nes_cm_node_state { |
| 179 | NES_CM_STATE_UNKNOWN, |
| 180 | NES_CM_STATE_INITED, |
| 181 | NES_CM_STATE_LISTENING, |
| 182 | NES_CM_STATE_SYN_RCVD, |
| 183 | NES_CM_STATE_SYN_SENT, |
| 184 | NES_CM_STATE_ONE_SIDE_ESTABLISHED, |
| 185 | NES_CM_STATE_ESTABLISHED, |
| 186 | NES_CM_STATE_ACCEPTING, |
| 187 | NES_CM_STATE_MPAREQ_SENT, |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 188 | NES_CM_STATE_MPAREQ_RCVD, |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 189 | NES_CM_STATE_TSA, |
| 190 | NES_CM_STATE_FIN_WAIT1, |
| 191 | NES_CM_STATE_FIN_WAIT2, |
| 192 | NES_CM_STATE_CLOSE_WAIT, |
| 193 | NES_CM_STATE_TIME_WAIT, |
| 194 | NES_CM_STATE_LAST_ACK, |
| 195 | NES_CM_STATE_CLOSING, |
| 196 | NES_CM_STATE_CLOSED |
| 197 | }; |
| 198 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 199 | enum nes_tcpip_pkt_type { |
| 200 | NES_PKT_TYPE_UNKNOWN, |
| 201 | NES_PKT_TYPE_SYN, |
| 202 | NES_PKT_TYPE_SYNACK, |
| 203 | NES_PKT_TYPE_ACK, |
| 204 | NES_PKT_TYPE_FIN, |
| 205 | NES_PKT_TYPE_RST |
| 206 | }; |
| 207 | |
| 208 | |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 209 | /* type of nes connection */ |
| 210 | enum nes_cm_conn_type { |
| 211 | NES_CM_IWARP_CONN_TYPE, |
| 212 | }; |
| 213 | |
| 214 | /* CM context params */ |
| 215 | struct nes_cm_tcp_context { |
| 216 | u8 client; |
| 217 | |
| 218 | u32 loc_seq_num; |
| 219 | u32 loc_ack_num; |
| 220 | u32 rem_ack_num; |
| 221 | u32 rcv_nxt; |
| 222 | |
| 223 | u32 loc_id; |
| 224 | u32 rem_id; |
| 225 | |
| 226 | u32 snd_wnd; |
| 227 | u32 max_snd_wnd; |
| 228 | |
| 229 | u32 rcv_wnd; |
| 230 | u32 mss; |
| 231 | u8 snd_wscale; |
| 232 | u8 rcv_wscale; |
| 233 | |
| 234 | struct nes_cm_tsa_context tsa_cntxt; |
| 235 | struct timeval sent_ts; |
| 236 | }; |
| 237 | |
| 238 | |
| 239 | enum nes_cm_listener_state { |
| 240 | NES_CM_LISTENER_PASSIVE_STATE=1, |
| 241 | NES_CM_LISTENER_ACTIVE_STATE=2, |
| 242 | NES_CM_LISTENER_EITHER_STATE=3 |
| 243 | }; |
| 244 | |
| 245 | struct nes_cm_listener { |
| 246 | struct list_head list; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 247 | struct nes_cm_core *cm_core; |
| 248 | u8 loc_mac[ETH_ALEN]; |
| 249 | nes_addr_t loc_addr; |
| 250 | u16 loc_port; |
| 251 | struct iw_cm_id *cm_id; |
| 252 | enum nes_cm_conn_type conn_type; |
| 253 | atomic_t ref_count; |
| 254 | struct nes_vnic *nesvnic; |
| 255 | atomic_t pend_accepts_cnt; |
| 256 | int backlog; |
| 257 | enum nes_cm_listener_state listener_state; |
| 258 | u32 reused_node; |
| 259 | }; |
| 260 | |
| 261 | /* per connection node and node state information */ |
| 262 | struct nes_cm_node { |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 263 | nes_addr_t loc_addr, rem_addr; |
| 264 | u16 loc_port, rem_port; |
| 265 | |
| 266 | u8 loc_mac[ETH_ALEN]; |
| 267 | u8 rem_mac[ETH_ALEN]; |
| 268 | |
| 269 | enum nes_cm_node_state state; |
| 270 | struct nes_cm_tcp_context tcp_cntxt; |
| 271 | struct nes_cm_core *cm_core; |
| 272 | struct sk_buff_head resend_list; |
| 273 | atomic_t ref_count; |
| 274 | struct net_device *netdev; |
| 275 | |
| 276 | struct nes_cm_node *loopbackpartner; |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 277 | |
| 278 | struct nes_timer_entry *send_entry; |
| 279 | |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 280 | spinlock_t retrans_list_lock; |
| 281 | struct list_head recv_list; |
| 282 | spinlock_t recv_list_lock; |
| 283 | |
| 284 | int send_write0; |
| 285 | union { |
| 286 | struct ietf_mpa_frame mpa_frame; |
| 287 | u8 mpa_frame_buf[NES_CM_DEFAULT_MTU]; |
| 288 | }; |
| 289 | u16 mpa_frame_size; |
| 290 | struct iw_cm_id *cm_id; |
| 291 | struct list_head list; |
| 292 | int accelerated; |
| 293 | struct nes_cm_listener *listener; |
| 294 | enum nes_cm_conn_type conn_type; |
| 295 | struct nes_vnic *nesvnic; |
| 296 | int apbvt_set; |
| 297 | int accept_pend; |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 298 | int freed; |
Faisal Latif | 879e5bd | 2008-11-21 20:50:41 -0600 | [diff] [blame] | 299 | struct list_head timer_entry; |
| 300 | struct list_head reset_entry; |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 301 | struct nes_qp *nesqp; |
Faisal Latif | 183ecfa | 2008-11-21 20:50:46 -0600 | [diff] [blame] | 302 | atomic_t passive_state; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 303 | }; |
| 304 | |
| 305 | /* structure for client or CM to fill when making CM api calls. */ |
| 306 | /* - only need to set relevant data, based on op. */ |
| 307 | struct nes_cm_info { |
| 308 | union { |
| 309 | struct iw_cm_id *cm_id; |
| 310 | struct net_device *netdev; |
| 311 | }; |
| 312 | |
| 313 | u16 loc_port; |
| 314 | u16 rem_port; |
| 315 | nes_addr_t loc_addr; |
| 316 | nes_addr_t rem_addr; |
| 317 | |
| 318 | enum nes_cm_conn_type conn_type; |
| 319 | int backlog; |
| 320 | }; |
| 321 | |
| 322 | /* CM event codes */ |
| 323 | enum nes_cm_event_type { |
| 324 | NES_CM_EVENT_UNKNOWN, |
| 325 | NES_CM_EVENT_ESTABLISHED, |
| 326 | NES_CM_EVENT_MPA_REQ, |
| 327 | NES_CM_EVENT_MPA_CONNECT, |
| 328 | NES_CM_EVENT_MPA_ACCEPT, |
| 329 | NES_CM_EVENT_MPA_ESTABLISHED, |
| 330 | NES_CM_EVENT_CONNECTED, |
| 331 | NES_CM_EVENT_CLOSED, |
| 332 | NES_CM_EVENT_RESET, |
| 333 | NES_CM_EVENT_DROPPED_PKT, |
| 334 | NES_CM_EVENT_CLOSE_IMMED, |
| 335 | NES_CM_EVENT_CLOSE_HARD, |
| 336 | NES_CM_EVENT_CLOSE_CLEAN, |
| 337 | NES_CM_EVENT_ABORTED, |
| 338 | NES_CM_EVENT_SEND_FIRST |
| 339 | }; |
| 340 | |
| 341 | /* event to post to CM event handler */ |
| 342 | struct nes_cm_event { |
| 343 | enum nes_cm_event_type type; |
| 344 | |
| 345 | struct nes_cm_info cm_info; |
| 346 | struct work_struct event_work; |
| 347 | struct nes_cm_node *cm_node; |
| 348 | }; |
| 349 | |
| 350 | struct nes_cm_core { |
| 351 | enum nes_cm_node_state state; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 352 | |
| 353 | atomic_t listen_node_cnt; |
| 354 | struct nes_cm_node listen_list; |
| 355 | spinlock_t listen_list_lock; |
| 356 | |
| 357 | u32 mtu; |
| 358 | u32 free_tx_pkt_max; |
| 359 | u32 rx_pkt_posted; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 360 | atomic_t ht_node_cnt; |
| 361 | struct list_head connected_nodes; |
| 362 | /* struct list_head hashtable[NES_CM_HASHTABLE_SIZE]; */ |
| 363 | spinlock_t ht_lock; |
| 364 | |
| 365 | struct timer_list tcp_timer; |
| 366 | |
| 367 | struct nes_cm_ops *api; |
| 368 | |
| 369 | int (*post_event)(struct nes_cm_event *event); |
| 370 | atomic_t events_posted; |
| 371 | struct workqueue_struct *event_wq; |
| 372 | struct workqueue_struct *disconn_wq; |
| 373 | |
| 374 | atomic_t node_cnt; |
| 375 | u64 aborted_connects; |
| 376 | u32 options; |
| 377 | |
| 378 | struct nes_cm_node *current_listen_node; |
| 379 | }; |
| 380 | |
| 381 | |
| 382 | #define NES_CM_SET_PKT_SIZE (1 << 1) |
| 383 | #define NES_CM_SET_FREE_PKT_Q_SIZE (1 << 2) |
| 384 | |
| 385 | /* CM ops/API for client interface */ |
| 386 | struct nes_cm_ops { |
| 387 | int (*accelerated)(struct nes_cm_core *, struct nes_cm_node *); |
| 388 | struct nes_cm_listener * (*listen)(struct nes_cm_core *, struct nes_vnic *, |
| 389 | struct nes_cm_info *); |
| 390 | int (*stop_listener)(struct nes_cm_core *, struct nes_cm_listener *); |
| 391 | struct nes_cm_node * (*connect)(struct nes_cm_core *, |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 392 | struct nes_vnic *, u16, void *, |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 393 | struct nes_cm_info *); |
| 394 | int (*close)(struct nes_cm_core *, struct nes_cm_node *); |
| 395 | int (*accept)(struct nes_cm_core *, struct ietf_mpa_frame *, |
| 396 | struct nes_cm_node *); |
| 397 | int (*reject)(struct nes_cm_core *, struct ietf_mpa_frame *, |
| 398 | struct nes_cm_node *); |
Faisal Latif | 4a14f6a | 2008-11-21 20:50:49 -0600 | [diff] [blame] | 399 | int (*recv_pkt)(struct nes_cm_core *, struct nes_vnic *, |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 400 | struct sk_buff *); |
| 401 | int (*destroy_cm_core)(struct nes_cm_core *); |
| 402 | int (*get)(struct nes_cm_core *); |
| 403 | int (*set)(struct nes_cm_core *, u32, u32); |
| 404 | }; |
| 405 | |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 406 | int schedule_nes_timer(struct nes_cm_node *, struct sk_buff *, |
| 407 | enum nes_timer_type, int, int); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 408 | |
| 409 | int nes_cm_disconn(struct nes_qp *); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 410 | |
| 411 | int nes_accept(struct iw_cm_id *, struct iw_cm_conn_param *); |
| 412 | int nes_reject(struct iw_cm_id *, const void *, u8); |
| 413 | int nes_connect(struct iw_cm_id *, struct iw_cm_conn_param *); |
| 414 | int nes_create_listen(struct iw_cm_id *, int); |
| 415 | int nes_destroy_listen(struct iw_cm_id *); |
| 416 | |
| 417 | int nes_cm_recv(struct sk_buff *, struct net_device *); |
| 418 | int nes_cm_start(void); |
| 419 | int nes_cm_stop(void); |
| 420 | |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 421 | #endif /* NES_CM_H */ |