1
2
3#ifndef IRDMA_CM_H
4#define IRDMA_CM_H
5
6#define IRDMA_MPA_REQUEST_ACCEPT 1
7#define IRDMA_MPA_REQUEST_REJECT 2
8
9
10#define IEFT_MPA_KEY_REQ "MPA ID Req Frame"
11#define IEFT_MPA_KEY_REP "MPA ID Rep Frame"
12#define IETF_MPA_KEY_SIZE 16
13#define IETF_MPA_VER 1
14#define IETF_MAX_PRIV_DATA_LEN 512
15#define IETF_MPA_FRAME_SIZE 20
16#define IETF_RTR_MSG_SIZE 4
17#define IETF_MPA_V2_FLAG 0x10
18#define SNDMARKER_SEQNMASK 0x000001ff
19#define IRDMA_MAX_IETF_SIZE 32
20
21
22#define IETF_PEER_TO_PEER 0x8000
23#define IETF_FLPDU_ZERO_LEN 0x4000
24#define IETF_RDMA0_WRITE 0x8000
25#define IETF_RDMA0_READ 0x4000
26#define IETF_NO_IRD_ORD 0x3fff
27
28#define MAX_PORTS 65536
29
30#define IRDMA_PASSIVE_STATE_INDICATED 0
31#define IRDMA_DO_NOT_SEND_RESET_EVENT 1
32#define IRDMA_SEND_RESET_EVENT 2
33
34#define MAX_IRDMA_IFS 4
35
36#define SET_ACK 1
37#define SET_SYN 2
38#define SET_FIN 4
39#define SET_RST 8
40
41#define TCP_OPTIONS_PADDING 3
42
43#define IRDMA_DEFAULT_RETRYS 64
44#define IRDMA_DEFAULT_RETRANS 8
45#define IRDMA_DEFAULT_TTL 0x40
46#define IRDMA_DEFAULT_RTT_VAR 6
47#define IRDMA_DEFAULT_SS_THRESH 0x3fffffff
48#define IRDMA_DEFAULT_REXMIT_THRESH 8
49
50#define IRDMA_RETRY_TIMEOUT HZ
51#define IRDMA_SHORT_TIME 10
52#define IRDMA_LONG_TIME (2 * HZ)
53#define IRDMA_MAX_TIMEOUT ((unsigned long)(12 * HZ))
54
55#define IRDMA_CM_HASHTABLE_SIZE 1024
56#define IRDMA_CM_TCP_TIMER_INTERVAL 3000
57#define IRDMA_CM_DEFAULT_MTU 1540
58#define IRDMA_CM_DEFAULT_FRAME_CNT 10
59#define IRDMA_CM_THREAD_STACK_SIZE 256
60#define IRDMA_CM_DEFAULT_RCV_WND 64240
61#define IRDMA_CM_DEFAULT_RCV_WND_SCALED 0x3FFFC
62#define IRDMA_CM_DEFAULT_RCV_WND_SCALE 2
63#define IRDMA_CM_DEFAULT_FREE_PKTS 10
64#define IRDMA_CM_FREE_PKT_LO_WATERMARK 2
65#define IRDMA_CM_DEFAULT_MSS 536
66#define IRDMA_CM_DEFAULT_MPA_VER 2
67#define IRDMA_CM_DEFAULT_SEQ 0x159bf75f
68#define IRDMA_CM_DEFAULT_LOCAL_ID 0x3b47
69#define IRDMA_CM_DEFAULT_SEQ2 0x18ed5740
70#define IRDMA_CM_DEFAULT_LOCAL_ID2 0xb807
71#define IRDMA_MAX_CM_BUF (IRDMA_MAX_IETF_SIZE + IETF_MAX_PRIV_DATA_LEN)
72
73enum ietf_mpa_flags {
74 IETF_MPA_FLAGS_REJECT = 0x20,
75 IETF_MPA_FLAGS_CRC = 0x40,
76 IETF_MPA_FLAGS_MARKERS = 0x80,
77};
78
79enum irdma_timer_type {
80 IRDMA_TIMER_TYPE_SEND,
81 IRDMA_TIMER_TYPE_CLOSE,
82};
83
84enum option_nums {
85 OPTION_NUM_EOL,
86 OPTION_NUM_NONE,
87 OPTION_NUM_MSS,
88 OPTION_NUM_WINDOW_SCALE,
89 OPTION_NUM_SACK_PERM,
90 OPTION_NUM_SACK,
91 OPTION_NUM_WRITE0 = 0xbc,
92};
93
94
95enum irdma_cm_node_state {
96 IRDMA_CM_STATE_UNKNOWN,
97 IRDMA_CM_STATE_INITED,
98 IRDMA_CM_STATE_LISTENING,
99 IRDMA_CM_STATE_SYN_RCVD,
100 IRDMA_CM_STATE_SYN_SENT,
101 IRDMA_CM_STATE_ONE_SIDE_ESTABLISHED,
102 IRDMA_CM_STATE_ESTABLISHED,
103 IRDMA_CM_STATE_ACCEPTING,
104 IRDMA_CM_STATE_MPAREQ_SENT,
105 IRDMA_CM_STATE_MPAREQ_RCVD,
106 IRDMA_CM_STATE_MPAREJ_RCVD,
107 IRDMA_CM_STATE_OFFLOADED,
108 IRDMA_CM_STATE_FIN_WAIT1,
109 IRDMA_CM_STATE_FIN_WAIT2,
110 IRDMA_CM_STATE_CLOSE_WAIT,
111 IRDMA_CM_STATE_TIME_WAIT,
112 IRDMA_CM_STATE_LAST_ACK,
113 IRDMA_CM_STATE_CLOSING,
114 IRDMA_CM_STATE_LISTENER_DESTROYED,
115 IRDMA_CM_STATE_CLOSED,
116};
117
118enum mpa_frame_ver {
119 IETF_MPA_V1 = 1,
120 IETF_MPA_V2 = 2,
121};
122
123enum mpa_frame_key {
124 MPA_KEY_REQUEST,
125 MPA_KEY_REPLY,
126};
127
128enum send_rdma0 {
129 SEND_RDMA_READ_ZERO = 1,
130 SEND_RDMA_WRITE_ZERO = 2,
131};
132
133enum irdma_tcpip_pkt_type {
134 IRDMA_PKT_TYPE_UNKNOWN,
135 IRDMA_PKT_TYPE_SYN,
136 IRDMA_PKT_TYPE_SYNACK,
137 IRDMA_PKT_TYPE_ACK,
138 IRDMA_PKT_TYPE_FIN,
139 IRDMA_PKT_TYPE_RST,
140};
141
142enum irdma_cm_listener_state {
143 IRDMA_CM_LISTENER_PASSIVE_STATE = 1,
144 IRDMA_CM_LISTENER_ACTIVE_STATE = 2,
145 IRDMA_CM_LISTENER_EITHER_STATE = 3,
146};
147
148
149enum irdma_cm_event_type {
150 IRDMA_CM_EVENT_UNKNOWN,
151 IRDMA_CM_EVENT_ESTABLISHED,
152 IRDMA_CM_EVENT_MPA_REQ,
153 IRDMA_CM_EVENT_MPA_CONNECT,
154 IRDMA_CM_EVENT_MPA_ACCEPT,
155 IRDMA_CM_EVENT_MPA_REJECT,
156 IRDMA_CM_EVENT_MPA_ESTABLISHED,
157 IRDMA_CM_EVENT_CONNECTED,
158 IRDMA_CM_EVENT_RESET,
159 IRDMA_CM_EVENT_ABORTED,
160};
161
162struct irdma_bth {
163 u8 opcode;
164 u8 flags;
165 __be16 pkey;
166 __be32 qpn;
167 __be32 apsn;
168};
169
170struct ietf_mpa_v1 {
171 u8 key[IETF_MPA_KEY_SIZE];
172 u8 flags;
173 u8 rev;
174 __be16 priv_data_len;
175 u8 priv_data[];
176};
177
178struct ietf_rtr_msg {
179 __be16 ctrl_ird;
180 __be16 ctrl_ord;
181};
182
183struct ietf_mpa_v2 {
184 u8 key[IETF_MPA_KEY_SIZE];
185 u8 flags;
186 u8 rev;
187 __be16 priv_data_len;
188 struct ietf_rtr_msg rtr_msg;
189 u8 priv_data[];
190};
191
192struct option_base {
193 u8 optionnum;
194 u8 len;
195};
196
197struct option_mss {
198 u8 optionnum;
199 u8 len;
200 __be16 mss;
201};
202
203struct option_windowscale {
204 u8 optionnum;
205 u8 len;
206 u8 shiftcount;
207};
208
209union all_known_options {
210 char eol;
211 struct option_base base;
212 struct option_mss mss;
213 struct option_windowscale windowscale;
214};
215
216struct irdma_timer_entry {
217 struct list_head list;
218 unsigned long timetosend;
219 struct irdma_puda_buf *sqbuf;
220 u32 type;
221 u32 retrycount;
222 u32 retranscount;
223 u32 context;
224 u32 send_retrans;
225 int close_when_complete;
226};
227
228
229struct irdma_cm_tcp_context {
230 u8 client;
231 u32 loc_seq_num;
232 u32 loc_ack_num;
233 u32 rem_ack_num;
234 u32 rcv_nxt;
235 u32 loc_id;
236 u32 rem_id;
237 u32 snd_wnd;
238 u32 max_snd_wnd;
239 u32 rcv_wnd;
240 u32 mss;
241 u8 snd_wscale;
242 u8 rcv_wscale;
243};
244
245struct irdma_apbvt_entry {
246 struct hlist_node hlist;
247 u32 use_cnt;
248 u16 port;
249};
250
251struct irdma_cm_listener {
252 struct list_head list;
253 struct iw_cm_id *cm_id;
254 struct irdma_cm_core *cm_core;
255 struct irdma_device *iwdev;
256 struct list_head child_listen_list;
257 struct irdma_apbvt_entry *apbvt_entry;
258 enum irdma_cm_listener_state listener_state;
259 refcount_t refcnt;
260 atomic_t pend_accepts_cnt;
261 u32 loc_addr[4];
262 u32 reused_node;
263 int backlog;
264 u16 loc_port;
265 u16 vlan_id;
266 u8 loc_mac[ETH_ALEN];
267 u8 user_pri;
268 u8 tos;
269 bool qhash_set:1;
270 bool ipv4:1;
271};
272
273struct irdma_kmem_info {
274 void *addr;
275 u32 size;
276};
277
278struct irdma_mpa_priv_info {
279 const void *addr;
280 u32 size;
281};
282
283struct irdma_cm_node {
284 struct irdma_qp *iwqp;
285 struct irdma_device *iwdev;
286 struct irdma_sc_dev *dev;
287 struct irdma_cm_tcp_context tcp_cntxt;
288 struct irdma_cm_core *cm_core;
289 struct irdma_timer_entry *send_entry;
290 struct irdma_timer_entry *close_entry;
291 struct irdma_cm_listener *listener;
292 struct list_head timer_entry;
293 struct list_head reset_entry;
294 struct list_head teardown_entry;
295 struct irdma_apbvt_entry *apbvt_entry;
296 struct rcu_head rcu_head;
297 struct irdma_mpa_priv_info pdata;
298 struct irdma_sc_ah *ah;
299 union {
300 struct ietf_mpa_v1 mpa_frame;
301 struct ietf_mpa_v2 mpa_v2_frame;
302 };
303 struct irdma_kmem_info mpa_hdr;
304 struct iw_cm_id *cm_id;
305 struct hlist_node list;
306 struct completion establish_comp;
307 spinlock_t retrans_list_lock;
308 atomic_t passive_state;
309 refcount_t refcnt;
310 enum irdma_cm_node_state state;
311 enum send_rdma0 send_rdma0_op;
312 enum mpa_frame_ver mpa_frame_rev;
313 u32 loc_addr[4], rem_addr[4];
314 u16 loc_port, rem_port;
315 int apbvt_set;
316 int accept_pend;
317 u16 vlan_id;
318 u16 ird_size;
319 u16 ord_size;
320 u16 mpav2_ird_ord;
321 u16 lsmm_size;
322 u8 pdata_buf[IETF_MAX_PRIV_DATA_LEN];
323 u8 loc_mac[ETH_ALEN];
324 u8 rem_mac[ETH_ALEN];
325 u8 user_pri;
326 u8 tos;
327 bool ack_rcvd:1;
328 bool qhash_set:1;
329 bool ipv4:1;
330 bool snd_mark_en:1;
331 bool rcv_mark_en:1;
332 bool do_lpb:1;
333 bool accelerated:1;
334};
335
336
337struct irdma_cm_info {
338 struct iw_cm_id *cm_id;
339 u16 loc_port;
340 u16 rem_port;
341 u32 loc_addr[4];
342 u32 rem_addr[4];
343 u32 qh_qpid;
344 u16 vlan_id;
345 int backlog;
346 u8 user_pri;
347 u8 tos;
348 bool ipv4;
349};
350
351struct irdma_cm_event {
352 enum irdma_cm_event_type type;
353 struct irdma_cm_info cm_info;
354 struct work_struct event_work;
355 struct irdma_cm_node *cm_node;
356};
357
358struct irdma_cm_core {
359 struct irdma_device *iwdev;
360 struct irdma_sc_dev *dev;
361 struct list_head listen_list;
362 DECLARE_HASHTABLE(cm_hash_tbl, 8);
363 DECLARE_HASHTABLE(apbvt_hash_tbl, 8);
364 struct timer_list tcp_timer;
365 struct workqueue_struct *event_wq;
366 spinlock_t ht_lock;
367 spinlock_t listen_list_lock;
368 spinlock_t apbvt_lock;
369 u64 stats_nodes_created;
370 u64 stats_nodes_destroyed;
371 u64 stats_listen_created;
372 u64 stats_listen_destroyed;
373 u64 stats_listen_nodes_created;
374 u64 stats_listen_nodes_destroyed;
375 u64 stats_lpbs;
376 u64 stats_accepts;
377 u64 stats_rejects;
378 u64 stats_connect_errs;
379 u64 stats_passive_errs;
380 u64 stats_pkt_retrans;
381 u64 stats_backlog_drops;
382 struct irdma_puda_buf *(*form_cm_frame)(struct irdma_cm_node *cm_node,
383 struct irdma_kmem_info *options,
384 struct irdma_kmem_info *hdr,
385 struct irdma_mpa_priv_info *pdata,
386 u8 flags);
387 int (*cm_create_ah)(struct irdma_cm_node *cm_node, bool wait);
388 void (*cm_free_ah)(struct irdma_cm_node *cm_node);
389};
390
391int irdma_schedule_cm_timer(struct irdma_cm_node *cm_node,
392 struct irdma_puda_buf *sqbuf,
393 enum irdma_timer_type type, int send_retrans,
394 int close_when_complete);
395int irdma_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param);
396int irdma_reject(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len);
397int irdma_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param);
398int irdma_create_listen(struct iw_cm_id *cm_id, int backlog);
399int irdma_destroy_listen(struct iw_cm_id *cm_id);
400int irdma_add_arp(struct irdma_pci_f *rf, u32 *ip, bool ipv4, u8 *mac);
401void irdma_cm_teardown_connections(struct irdma_device *iwdev, u32 *ipaddr,
402 struct irdma_cm_info *nfo,
403 bool disconnect_all);
404int irdma_cm_start(struct irdma_device *dev);
405int irdma_cm_stop(struct irdma_device *dev);
406bool irdma_ipv4_is_lpb(u32 loc_addr, u32 rem_addr);
407bool irdma_ipv6_is_lpb(u32 *loc_addr, u32 *rem_addr);
408int irdma_arp_table(struct irdma_pci_f *rf, u32 *ip_addr, bool ipv4,
409 u8 *mac_addr, u32 action);
410void irdma_if_notify(struct irdma_device *iwdev, struct net_device *netdev,
411 u32 *ipaddr, bool ipv4, bool ifup);
412bool irdma_port_in_use(struct irdma_cm_core *cm_core, u16 port);
413void irdma_send_ack(struct irdma_cm_node *cm_node);
414void irdma_lpb_nop(struct irdma_sc_qp *qp);
415void irdma_rem_ref_cm_node(struct irdma_cm_node *cm_node);
416void irdma_add_conn_est_qh(struct irdma_cm_node *cm_node);
417#endif
418
