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4 * Copyright (c) 2015 - 2021 Intel Corporation
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39 #define IRDMA_MPA_REQUEST_ACCEPT 1
40 #define IRDMA_MPA_REQUEST_REJECT 2
42 /* IETF MPA -- defines */
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_VER 1
47 #define IETF_MAX_PRIV_DATA_LEN 512
48 #define IETF_MPA_FRAME_SIZE 20
49 #define IETF_RTR_MSG_SIZE 4
50 #define IETF_MPA_V2_FLAG 0x10
51 #define SNDMARKER_SEQNMASK 0x000001ff
52 #define IRDMA_MAX_IETF_SIZE 32
54 /* IETF RTR MSG Fields */
55 #define IETF_PEER_TO_PEER 0x8000
56 #define IETF_FLPDU_ZERO_LEN 0x4000
57 #define IETF_RDMA0_WRITE 0x8000
58 #define IETF_RDMA0_READ 0x4000
59 #define IETF_NO_IRD_ORD 0x3fff
61 #define MAX_PORTS 65536
63 #define IRDMA_PASSIVE_STATE_INDICATED 0
64 #define IRDMA_DO_NOT_SEND_RESET_EVENT 1
65 #define IRDMA_SEND_RESET_EVENT 2
67 #define MAX_IRDMA_IFS 4
74 #define TCP_OPTIONS_PADDING 3
76 #define IRDMA_DEFAULT_RETRYS 64
77 #define IRDMA_DEFAULT_RETRANS 8
78 #define IRDMA_DEFAULT_TTL 0x40
79 #define IRDMA_DEFAULT_RTT_VAR 6
80 #define IRDMA_DEFAULT_SS_THRESH 0x3fffffff
81 #define IRDMA_DEFAULT_REXMIT_THRESH 8
83 #define IRDMA_RETRY_TIMEOUT HZ
84 #define IRDMA_SHORT_TIME 10
85 #define IRDMA_LONG_TIME (2 * HZ)
86 #define IRDMA_MAX_TIMEOUT ((unsigned long)(12 * HZ))
88 #define IRDMA_CM_HASHTABLE_SIZE 1024
89 #define IRDMA_CM_TCP_TIMER_INTERVAL 3000
90 #define IRDMA_CM_DEFAULT_MTU 1540
91 #define IRDMA_CM_DEFAULT_FRAME_CNT 10
92 #define IRDMA_CM_THREAD_STACK_SIZE 256
93 #define IRDMA_CM_DEFAULT_RCV_WND 64240
94 #define IRDMA_CM_DEFAULT_RCV_WND_SCALED 0x3FFFC
95 #define IRDMA_CM_DEFAULT_RCV_WND_SCALE 2
96 #define IRDMA_CM_DEFAULT_FREE_PKTS 10
97 #define IRDMA_CM_FREE_PKT_LO_WATERMARK 2
98 #define IRDMA_CM_DEFAULT_MSS 536
99 #define IRDMA_CM_DEFAULT_MPA_VER 2
100 #define IRDMA_CM_DEFAULT_SEQ 0x159bf75f
101 #define IRDMA_CM_DEFAULT_LOCAL_ID 0x3b47
102 #define IRDMA_CM_DEFAULT_SEQ2 0x18ed5740
103 #define IRDMA_CM_DEFAULT_LOCAL_ID2 0xb807
104 #define IRDMA_MAX_CM_BUF (IRDMA_MAX_IETF_SIZE + IETF_MAX_PRIV_DATA_LEN)
106 enum ietf_mpa_flags {
107 IETF_MPA_FLAGS_REJECT = 0x20,
108 IETF_MPA_FLAGS_CRC = 0x40,
109 IETF_MPA_FLAGS_MARKERS = 0x80,
112 enum irdma_timer_type {
113 IRDMA_TIMER_TYPE_SEND,
114 IRDMA_TIMER_TYPE_CLOSE,
121 OPTION_NUM_WINDOW_SCALE,
122 OPTION_NUM_SACK_PERM,
124 OPTION_NUM_WRITE0 = 0xbc,
127 /* cm node transition states */
128 enum irdma_cm_node_state {
129 IRDMA_CM_STATE_UNKNOWN,
130 IRDMA_CM_STATE_INITED,
131 IRDMA_CM_STATE_LISTENING,
132 IRDMA_CM_STATE_SYN_RCVD,
133 IRDMA_CM_STATE_SYN_SENT,
134 IRDMA_CM_STATE_ONE_SIDE_ESTABLISHED,
135 IRDMA_CM_STATE_ESTABLISHED,
136 IRDMA_CM_STATE_ACCEPTING,
137 IRDMA_CM_STATE_MPAREQ_SENT,
138 IRDMA_CM_STATE_MPAREQ_RCVD,
139 IRDMA_CM_STATE_MPAREJ_RCVD,
140 IRDMA_CM_STATE_OFFLOADED,
141 IRDMA_CM_STATE_FIN_WAIT1,
142 IRDMA_CM_STATE_FIN_WAIT2,
143 IRDMA_CM_STATE_CLOSE_WAIT,
144 IRDMA_CM_STATE_TIME_WAIT,
145 IRDMA_CM_STATE_LAST_ACK,
146 IRDMA_CM_STATE_CLOSING,
147 IRDMA_CM_STATE_LISTENER_DESTROYED,
148 IRDMA_CM_STATE_CLOSED,
162 SEND_RDMA_READ_ZERO = 1,
163 SEND_RDMA_WRITE_ZERO = 2,
166 enum irdma_tcpip_pkt_type {
167 IRDMA_PKT_TYPE_UNKNOWN,
169 IRDMA_PKT_TYPE_SYNACK,
175 enum irdma_cm_listener_state {
176 IRDMA_CM_LISTENER_PASSIVE_STATE = 1,
177 IRDMA_CM_LISTENER_ACTIVE_STATE = 2,
178 IRDMA_CM_LISTENER_EITHER_STATE = 3,
182 enum irdma_cm_event_type {
183 IRDMA_CM_EVENT_UNKNOWN,
184 IRDMA_CM_EVENT_ESTABLISHED,
185 IRDMA_CM_EVENT_MPA_REQ,
186 IRDMA_CM_EVENT_MPA_CONNECT,
187 IRDMA_CM_EVENT_MPA_ACCEPT,
188 IRDMA_CM_EVENT_MPA_REJECT,
189 IRDMA_CM_EVENT_MPA_ESTABLISHED,
190 IRDMA_CM_EVENT_CONNECTED,
191 IRDMA_CM_EVENT_RESET,
192 IRDMA_CM_EVENT_ABORTED,
195 struct irdma_bth { /* Base Trasnport Header */
204 u8 key[IETF_MPA_KEY_SIZE];
207 __be16 priv_data_len;
211 struct ietf_rtr_msg {
217 u8 key[IETF_MPA_KEY_SIZE];
220 __be16 priv_data_len;
221 struct ietf_rtr_msg rtr_msg;
236 struct option_windowscale {
242 union all_known_options {
244 struct option_base base;
245 struct option_mss mss;
246 struct option_windowscale windowscale;
249 struct irdma_timer_entry {
250 struct list_head list;
251 unsigned long timetosend; /* jiffies */
252 struct irdma_puda_buf *sqbuf;
258 int close_when_complete;
261 /* CM context params */
262 struct irdma_cm_tcp_context {
278 struct irdma_apbvt_entry {
279 struct hlist_node hlist;
284 struct irdma_cm_listener {
285 struct list_head list;
286 struct iw_cm_id *cm_id;
287 struct irdma_cm_core *cm_core;
288 struct irdma_device *iwdev;
289 struct list_head child_listen_list;
290 struct irdma_apbvt_entry *apbvt_entry;
291 enum irdma_cm_listener_state listener_state;
293 atomic_t pend_accepts_cnt;
299 u8 loc_mac[ETH_ALEN];
306 struct irdma_kmem_info {
311 struct irdma_mpa_priv_info {
316 struct irdma_cm_node {
317 struct irdma_qp *iwqp;
318 struct irdma_device *iwdev;
319 struct irdma_sc_dev *dev;
320 struct irdma_cm_tcp_context tcp_cntxt;
321 struct irdma_cm_core *cm_core;
322 struct irdma_timer_entry *send_entry;
323 struct irdma_timer_entry *close_entry;
324 struct irdma_cm_listener *listener;
325 struct list_head timer_entry;
326 struct list_head reset_entry;
327 struct list_head teardown_entry;
328 struct irdma_apbvt_entry *apbvt_entry;
329 struct rcu_head rcu_head;
330 struct irdma_mpa_priv_info pdata;
331 struct irdma_sc_ah *ah;
332 struct irdma_kmem_info mpa_hdr;
333 struct iw_cm_id *cm_id;
334 struct hlist_node list;
335 struct completion establish_comp;
336 spinlock_t retrans_list_lock; /* protect CM node rexmit updates*/
337 atomic_t passive_state;
339 enum irdma_cm_node_state state;
340 enum send_rdma0 send_rdma0_op;
341 enum mpa_frame_ver mpa_frame_rev;
342 u32 loc_addr[4], rem_addr[4];
343 u16 loc_port, rem_port;
351 u8 pdata_buf[IETF_MAX_PRIV_DATA_LEN];
352 u8 loc_mac[ETH_ALEN];
353 u8 rem_mac[ETH_ALEN];
363 struct ietf_mpa_v2 mpa_v2_frame;
366 /* Used by internal CM APIs to pass CM information*/
367 struct irdma_cm_info {
368 struct iw_cm_id *cm_id;
381 struct irdma_cm_event {
382 enum irdma_cm_event_type type;
383 struct irdma_cm_info cm_info;
384 struct work_struct event_work;
385 struct irdma_cm_node *cm_node;
388 struct irdma_cm_core {
389 struct irdma_device *iwdev;
390 struct irdma_sc_dev *dev;
391 struct list_head listen_list;
392 DECLARE_HASHTABLE(cm_hash_tbl, 8);
393 DECLARE_HASHTABLE(apbvt_hash_tbl, 8);
394 struct timer_list tcp_timer;
395 struct workqueue_struct *event_wq;
396 spinlock_t ht_lock; /* protect CM node (active side) list */
397 spinlock_t listen_list_lock; /* protect listener list */
398 spinlock_t apbvt_lock; /*serialize apbvt add/del entries*/
399 u64 stats_nodes_created;
400 u64 stats_nodes_destroyed;
401 u64 stats_listen_created;
402 u64 stats_listen_destroyed;
403 u64 stats_listen_nodes_created;
404 u64 stats_listen_nodes_destroyed;
408 u64 stats_connect_errs;
409 u64 stats_passive_errs;
410 u64 stats_pkt_retrans;
411 u64 stats_backlog_drops;
412 struct irdma_puda_buf *(*form_cm_frame)(struct irdma_cm_node *cm_node,
413 struct irdma_kmem_info *options,
414 struct irdma_kmem_info *hdr,
415 struct irdma_mpa_priv_info *pdata,
417 int (*cm_create_ah)(struct irdma_cm_node *cm_node, bool wait);
418 void (*cm_free_ah)(struct irdma_cm_node *cm_node);
421 int irdma_schedule_cm_timer(struct irdma_cm_node *cm_node,
422 struct irdma_puda_buf *sqbuf,
423 enum irdma_timer_type type, int send_retrans,
424 int close_when_complete);
426 static inline u8 irdma_tos2dscp(u8 tos)
428 #define IRDMA_DSCP_S 2
429 #define IRDMA_DSCP_M (0x3f << IRDMA_DSCP_S)
430 return RS_32(tos, IRDMA_DSCP);
433 int irdma_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param);
434 int irdma_reject(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len);
435 int irdma_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param);
436 int irdma_create_listen(struct iw_cm_id *cm_id, int backlog);
437 int irdma_destroy_listen(struct iw_cm_id *cm_id);
438 int irdma_add_arp(struct irdma_pci_f *rf, u32 *ip, u8 *mac);
439 void irdma_cm_teardown_connections(struct irdma_device *iwdev, u32 *ipaddr,
440 struct irdma_cm_info *nfo,
441 bool disconnect_all);
442 int irdma_cm_start(struct irdma_device *dev);
443 int irdma_cm_stop(struct irdma_device *dev);
444 bool irdma_ipv4_is_lpb(u32 loc_addr, u32 rem_addr);
445 bool irdma_ipv6_is_lpb(u32 *loc_addr, u32 *rem_addr);
446 int irdma_arp_table(struct irdma_pci_f *rf, u32 *ip_addr,
447 u8 *mac_addr, u32 action);
448 bool irdma_port_in_use(struct irdma_cm_core *cm_core, u16 port);
449 void irdma_send_ack(struct irdma_cm_node *cm_node);
450 void irdma_lpb_nop(struct irdma_sc_qp *qp);
451 void irdma_rem_ref_cm_node(struct irdma_cm_node *cm_node);
452 void irdma_add_conn_est_qh(struct irdma_cm_node *cm_node);
453 #endif /* IRDMA_CM_H */