Line data Source code
1 : /*
2 : * Copyright (c) 2020 Cisco and/or its affiliates.
3 : * Licensed under the Apache License, Version 2.0 (the "License");
4 : * you may not use this file except in compliance with the License.
5 : * You may obtain a copy of the License at:
6 : *
7 : * http://www.apache.org/licenses/LICENSE-2.0
8 : *
9 : * Unless required by applicable law or agreed to in writing, software
10 : * distributed under the License is distributed on an "AS IS" BASIS,
11 : * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 : * See the License for the specific language governing permissions and
13 : * limitations under the License.
14 : */
15 :
16 : #ifndef SRC_VNET_TCP_TCP_TYPES_H_
17 : #define SRC_VNET_TCP_TCP_TYPES_H_
18 :
19 : #include <vppinfra/clib.h>
20 : #include <vppinfra/rbtree.h>
21 : #include <vnet/tcp/tcp_packet.h>
22 : #include <vnet/session/transport.h>
23 :
24 : #define TCP_TICK 0.000001 /**< TCP tick period (s) */
25 : #define THZ (u32) (1/TCP_TICK) /**< TCP tick frequency */
26 :
27 : #define TCP_TSTP_TICK 0.001 /**< Timestamp tick (s) */
28 : #define TCP_TSTP_HZ (u32) (1/TCP_TSTP_TICK) /**< Timestamp freq */
29 : #define TCP_PAWS_IDLE (24 * 86400 * TCP_TSTP_HZ)/**< 24 days */
30 : #define TCP_TSTP_TO_HZ (u32) (TCP_TSTP_TICK * THZ)
31 :
32 : #define TCP_FIB_RECHECK_PERIOD 1 * THZ /**< Recheck every 1s */
33 : #define TCP_MAX_OPTION_SPACE 40
34 : #define TCP_CC_DATA_SZ 24
35 : #define TCP_RXT_MAX_BURST 10
36 :
37 : #define TCP_DUPACK_THRESHOLD 3
38 : #define TCP_IW_N_SEGMENTS 10
39 : #define TCP_ALWAYS_ACK 1 /**< On/off delayed acks */
40 : #define TCP_USE_SACKS 1 /**< Disable only for testing */
41 :
42 : /** TCP FSM state definitions as per RFC793. */
43 : #define foreach_tcp_fsm_state \
44 : _(CLOSED, "CLOSED") \
45 : _(LISTEN, "LISTEN") \
46 : _(SYN_SENT, "SYN_SENT") \
47 : _(SYN_RCVD, "SYN_RCVD") \
48 : _(ESTABLISHED, "ESTABLISHED") \
49 : _(CLOSE_WAIT, "CLOSE_WAIT") \
50 : _(FIN_WAIT_1, "FIN_WAIT_1") \
51 : _(LAST_ACK, "LAST_ACK") \
52 : _(CLOSING, "CLOSING") \
53 : _(FIN_WAIT_2, "FIN_WAIT_2") \
54 : _(TIME_WAIT, "TIME_WAIT")
55 :
56 : typedef enum _tcp_state
57 : {
58 : #define _(sym, str) TCP_STATE_##sym,
59 : foreach_tcp_fsm_state
60 : #undef _
61 : TCP_N_STATES
62 : } tcp_state_t;
63 :
64 : /** TCP timers */
65 : #define foreach_tcp_timer \
66 : _(RETRANSMIT, "RETRANSMIT") \
67 : _(PERSIST, "PERSIST") \
68 : _(WAITCLOSE, "WAIT CLOSE") \
69 : _(RETRANSMIT_SYN, "RETRANSMIT SYN") \
70 :
71 : typedef enum _tcp_timers
72 : {
73 : #define _(sym, str) TCP_TIMER_##sym,
74 : foreach_tcp_timer
75 : #undef _
76 : TCP_N_TIMERS
77 : } __clib_packed tcp_timers_e;
78 :
79 : #define TCP_TIMER_HANDLE_INVALID ((u32) ~0)
80 :
81 : #define TCP_TIMER_TICK 0.0001 /**< Timer tick in seconds */
82 : #define TCP_TO_TIMER_TICK TCP_TICK*10000 /**< Factor for converting
83 : ticks to timer ticks */
84 :
85 : #define TCP_RTO_MAX 60 * THZ /* Min max RTO (60s) as per RFC6298 */
86 : #define TCP_RTO_MIN 0.2 * THZ /* Min RTO (200ms) - lower than standard */
87 : #define TCP_RTT_MAX 30 * THZ /* 30s (probably too much) */
88 : #define TCP_RTO_SYN_RETRIES 3 /* SYN retries without doubling RTO */
89 : #define TCP_RTO_INIT 1 * THZ /* Initial retransmit timer */
90 : #define TCP_RTO_BOFF_MAX 8 /* Max number of retries before reset */
91 : #define TCP_ESTABLISH_TIME (60 * THZ) /* Connection establish timeout */
92 :
93 : /** Connection configuration flags */
94 : #define foreach_tcp_cfg_flag \
95 : _(RATE_SAMPLE, "Rate sampling") \
96 : _(NO_CSUM_OFFLOAD, "No csum offload") \
97 : _(NO_TSO, "TSO off") \
98 : _(TSO, "TSO") \
99 : _(NO_ENDPOINT,"No endpoint") \
100 :
101 : typedef enum tcp_cfg_flag_bits_
102 : {
103 : #define _(sym, str) TCP_CFG_F_##sym##_BIT,
104 : foreach_tcp_cfg_flag
105 : #undef _
106 : TCP_CFG_N_FLAG_BITS
107 : } tcp_cfg_flag_bits_e;
108 :
109 : typedef enum tcp_cfg_flag_
110 : {
111 : #define _(sym, str) TCP_CFG_F_##sym = 1 << TCP_CFG_F_##sym##_BIT,
112 : foreach_tcp_cfg_flag
113 : #undef _
114 : TCP_CFG_N_FLAGS
115 : } tcp_cfg_flags_e;
116 :
117 : /** TCP connection flags */
118 : #define foreach_tcp_connection_flag \
119 : _(SNDACK, "Send ACK") \
120 : _(FINSNT, "FIN sent") \
121 : _(RECOVERY, "Recovery") \
122 : _(FAST_RECOVERY, "Fast Recovery") \
123 : _(DCNT_PENDING, "Disconnect pending") \
124 : _(HALF_OPEN_DONE, "Half-open completed") \
125 : _(FINPNDG, "FIN pending") \
126 : _(RXT_PENDING, "Retransmit pending") \
127 : _(FRXT_FIRST, "Retransmit first") \
128 : _(DEQ_PENDING, "Dequeue pending ") \
129 : _(PSH_PENDING, "PSH pending") \
130 : _(FINRCVD, "FIN received") \
131 : _(ZERO_RWND_SENT, "Zero RWND sent") \
132 :
133 : typedef enum tcp_connection_flag_bits_
134 : {
135 : #define _(sym, str) TCP_CONN_##sym##_BIT,
136 : foreach_tcp_connection_flag
137 : #undef _
138 : TCP_CONN_N_FLAG_BITS
139 : } tcp_connection_flag_bits_e;
140 :
141 : typedef enum tcp_connection_flag_
142 : {
143 : #define _(sym, str) TCP_CONN_##sym = 1 << TCP_CONN_##sym##_BIT,
144 : foreach_tcp_connection_flag
145 : #undef _
146 : TCP_CONN_N_FLAGS
147 : } tcp_connection_flags_e;
148 :
149 : #define TCP_SCOREBOARD_TRACE (0)
150 : #define TCP_MAX_SACK_BLOCKS 255 /**< Max number of SACK blocks stored */
151 : #define TCP_INVALID_SACK_HOLE_INDEX ((u32)~0)
152 : #define TCP_MAX_SACK_REORDER 300
153 :
154 : typedef struct _scoreboard_trace_elt
155 : {
156 : u32 start;
157 : u32 end;
158 : u32 ack;
159 : u32 snd_nxt;
160 : u32 group;
161 : } scoreboard_trace_elt_t;
162 :
163 : typedef struct _sack_scoreboard_hole
164 : {
165 : u32 next; /**< Index for next entry in linked list */
166 : u32 prev; /**< Index for previous entry in linked list */
167 : u32 start; /**< Start sequence number */
168 : u32 end; /**< End sequence number */
169 : u8 is_lost; /**< Mark hole as lost */
170 : } sack_scoreboard_hole_t;
171 :
172 : typedef struct _sack_scoreboard
173 : {
174 : sack_scoreboard_hole_t *holes; /**< Pool of holes */
175 : u32 head; /**< Index of first entry */
176 : u32 tail; /**< Index of last entry */
177 : u32 sacked_bytes; /**< Number of bytes sacked in sb */
178 : u32 last_sacked_bytes; /**< Number of bytes last sacked */
179 : u32 last_bytes_delivered; /**< Sack bytes delivered to app */
180 : u32 rxt_sacked; /**< Rxt bytes last delivered */
181 : u32 high_sacked; /**< Highest byte sacked (fack) */
182 : u32 high_rxt; /**< Highest retransmitted sequence */
183 : u32 rescue_rxt; /**< Rescue sequence number */
184 : u32 lost_bytes; /**< Bytes lost as per RFC6675 */
185 : u32 last_lost_bytes; /**< Number of bytes last lost */
186 : u32 cur_rxt_hole; /**< Retransmitting from this hole */
187 : u32 reorder; /**< Estimate of segment reordering */
188 : u8 is_reneging; /**< Flag set if peer is reneging*/
189 :
190 : #if TCP_SCOREBOARD_TRACE
191 : scoreboard_trace_elt_t *trace;
192 : #endif
193 :
194 : } sack_scoreboard_t;
195 :
196 : #define TCP_BTS_INVALID_INDEX ((u32)~0)
197 :
198 : typedef enum tcp_bts_flags_
199 : {
200 : TCP_BTS_IS_RXT = 1,
201 : TCP_BTS_IS_APP_LIMITED = 1 << 1,
202 : TCP_BTS_IS_SACKED = 1 << 2,
203 : TCP_BTS_IS_RXT_LOST = 1 << 3,
204 : } __clib_packed tcp_bts_flags_t;
205 :
206 : typedef struct tcp_bt_sample_
207 : {
208 : u32 next; /**< Next sample index in list */
209 : u32 prev; /**< Previous sample index in list */
210 : u32 min_seq; /**< Min seq number in sample */
211 : u32 max_seq; /**< Max seq number. Set for rxt samples */
212 : u64 delivered; /**< Total delivered bytes for sample */
213 : f64 delivered_time; /**< Delivered time when sample taken */
214 : f64 tx_time; /**< Transmit time for the burst */
215 : f64 first_tx_time; /**< Connection first tx time at tx */
216 : u64 tx_in_flight; /**< In flight at tx time */
217 : u64 tx_lost; /**< Lost at tx time */
218 : tcp_bts_flags_t flags; /**< Sample flag */
219 : } tcp_bt_sample_t;
220 :
221 : typedef struct tcp_rate_sample_
222 : {
223 : u64 prior_delivered; /**< Delivered of sample used for rate, i.e.,
224 : total bytes delivered at prior_time */
225 : f64 prior_time; /**< Delivered time of sample used for rate */
226 : f64 interval_time; /**< Time to ack the bytes delivered */
227 : f64 rtt_time; /**< RTT for sample */
228 : u64 tx_in_flight; /**< In flight at (re)transmit time */
229 : u64 tx_lost; /**< Lost over interval */
230 : u32 delivered; /**< Bytes delivered in interval_time */
231 : u32 acked_and_sacked; /**< Bytes acked + sacked now */
232 : u32 last_lost; /**< Bytes lost now */
233 : u32 lost; /**< Number of bytes lost over interval */
234 : tcp_bts_flags_t flags; /**< Rate sample flags from bt sample */
235 : } tcp_rate_sample_t;
236 :
237 : typedef struct tcp_byte_tracker_
238 : {
239 : tcp_bt_sample_t *samples; /**< Pool of samples */
240 : rb_tree_t sample_lookup; /**< Rbtree for sample lookup by min_seq */
241 : u32 head; /**< Head of samples linked list */
242 : u32 tail; /**< Tail of samples linked list */
243 : u32 last_ooo; /**< Cached last ooo sample */
244 : } tcp_byte_tracker_t;
245 :
246 : typedef enum _tcp_cc_algorithm_type
247 : {
248 : TCP_CC_NEWRENO,
249 : TCP_CC_CUBIC,
250 : TCP_CC_LAST = TCP_CC_CUBIC
251 : } tcp_cc_algorithm_type_e;
252 :
253 : typedef struct _tcp_cc_algorithm tcp_cc_algorithm_t;
254 :
255 : typedef enum _tcp_cc_ack_t
256 : {
257 : TCP_CC_ACK,
258 : TCP_CC_DUPACK,
259 : TCP_CC_PARTIALACK
260 : } tcp_cc_ack_t;
261 :
262 : typedef enum tcp_cc_event_
263 : {
264 : TCP_CC_EVT_START_TX,
265 : } tcp_cc_event_t;
266 :
267 : /*
268 : * As per RFC4898 tcpEStatsStackSoftErrors
269 : */
270 : typedef struct tcp_errors_
271 : {
272 : u32 below_data_wnd; /**< All data in seg is below snd_una */
273 : u32 above_data_wnd; /**< Some data in segment is above snd_wnd */
274 : u32 below_ack_wnd; /**< Acks for data below snd_una */
275 : u32 above_ack_wnd; /**< Acks for data not sent */
276 : } tcp_errors_t;
277 :
278 : typedef struct _tcp_connection
279 : {
280 : CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
281 : transport_connection_t connection; /**< Common transport data. First! */
282 :
283 : u8 state; /**< TCP state as per tcp_state_t */
284 : u8 cfg_flags; /**< Connection configuration flags */
285 : u16 flags; /**< Connection flags (see tcp_conn_flags_e) */
286 : u32 timers[TCP_N_TIMERS]; /**< Timer handles into timer wheel */
287 : u32 pending_timers; /**< Expired timers not yet handled */
288 :
289 : u64 segs_in; /** RFC4022/4898 tcpHCInSegs/tcpEStatsPerfSegsIn */
290 : u64 bytes_in; /** RFC4898 tcpEStatsPerfHCDataOctetsIn */
291 : u64 segs_out; /** RFC4898 tcpEStatsPerfSegsOut */
292 : u64 bytes_out; /** RFC4898 tcpEStatsPerfHCDataOctetsOut */
293 :
294 : /** Send sequence variables RFC793 */
295 : u32 snd_una; /**< oldest unacknowledged sequence number */
296 : u32 snd_wnd; /**< send window */
297 : u32 snd_wl1; /**< seq number used for last snd.wnd update */
298 : u32 snd_wl2; /**< ack number used for last snd.wnd update */
299 : u32 snd_nxt; /**< next seq number to be sent */
300 : u16 snd_mss; /**< Effective send max seg (data) size */
301 :
302 : u64 data_segs_in; /** RFC4898 tcpEStatsPerfDataSegsIn */
303 : u64 data_segs_out; /** RFC4898 tcpEStatsPerfDataSegsOut */
304 :
305 : /** Receive sequence variables RFC793 */
306 : u32 rcv_nxt; /**< next sequence number expected */
307 : u32 rcv_wnd; /**< receive window we expect */
308 :
309 : u32 rcv_las; /**< rcv_nxt at last ack sent/rcv_wnd update */
310 :
311 : /* Options */
312 : u8 snd_opts_len; /**< Tx options len */
313 : u8 snd_sack_pos; /**< Position in vec of first block to send */
314 : u8 rcv_wscale; /**< Window scale to advertise to peer */
315 : u8 snd_wscale; /**< Window scale to use when sending */
316 : u32 tsval_recent; /**< Last timestamp received */
317 : u32 tsval_recent_age; /**< When last updated tstamp_recent*/
318 : u32 timestamp_delta; /**< Offset for timestamp */
319 : tcp_options_t snd_opts; /**< Tx options for connection */
320 : tcp_options_t rcv_opts; /**< Rx options for connection */
321 :
322 : sack_block_t *snd_sacks; /**< Vector of SACKs to send. XXX Fixed size? */
323 : sack_block_t *snd_sacks_fl; /**< Vector for building new list */
324 : sack_scoreboard_t sack_sb; /**< SACK "scoreboard" that tracks holes */
325 :
326 : u16 rcv_dupacks; /**< Number of recent DUPACKs received */
327 : u32 dupacks_in; /**< RFC4898 tcpEStatsStackDupAcksIn*/
328 : u8 pending_dupacks; /**< Number of DUPACKs to be sent */
329 : u32 dupacks_out; /**< RFC4898 tcpEStatsPathDupAcksOut */
330 :
331 : /* Congestion control */
332 : u32 cwnd; /**< Congestion window */
333 : u32 cwnd_acc_bytes; /**< Bytes accumulated for cwnd increment */
334 : u32 ssthresh; /**< Slow-start threshold */
335 : u32 prev_ssthresh; /**< ssthresh before congestion */
336 : u32 prev_cwnd; /**< ssthresh before congestion */
337 : u32 bytes_acked; /**< Bytes acknowledged by current segment */
338 : u32 burst_acked; /**< Bytes acknowledged in current burst */
339 : u32 snd_rxt_bytes; /**< Retransmitted bytes during current cc event */
340 : u32 snd_rxt_ts; /**< Timestamp when first packet is retransmitted */
341 : u32 prr_delivered; /**< RFC6937 bytes delivered during current event */
342 : u32 prr_start; /**< snd_una when prr starts */
343 : u32 rxt_delivered; /**< Rxt bytes delivered during current cc event */
344 : u32 rxt_head; /**< snd_una last time we re rxted the head */
345 : u32 tsecr_last_ack; /**< Timestamp echoed to us in last healthy ACK */
346 : u32 snd_congestion; /**< snd_nxt when congestion is detected */
347 : u32 tx_fifo_size; /**< Tx fifo size. Used to constrain cwnd */
348 : tcp_cc_algorithm_t *cc_algo; /**< Congestion control algorithm */
349 : u8 cc_data[TCP_CC_DATA_SZ]; /**< Congestion control algo private data */
350 :
351 : u32 fr_occurences; /**< fast-retransmit occurrences RFC4898
352 : tcpEStatsStackFastRetran */
353 : u32 tr_occurences; /**< timer-retransmit occurrences */
354 : u64 bytes_retrans; /**< RFC4898 tcpEStatsPerfOctetsRetrans */
355 : u64 segs_retrans; /**< RFC4898 tcpEStatsPerfSegsRetrans*/
356 :
357 : /* RTT and RTO */
358 : u32 rto; /**< Retransmission timeout */
359 : u32 rto_boff; /**< Index for RTO backoff */
360 : u32 srtt; /**< Smoothed RTT measured in @ref TCP_TICK */
361 : u32 rttvar; /**< Smoothed mean RTT difference. Approximates variance */
362 : u32 rtt_seq; /**< Sequence number for tracked ACK */
363 : f64 rtt_ts; /**< Timestamp for tracked ACK */
364 : f64 mrtt_us; /**< High precision mrtt from tracked acks */
365 :
366 : u32 psh_seq; /**< Add psh header for seg that includes this */
367 : u32 next_node_index; /**< Can be used to control next node in output */
368 : u32 next_node_opaque; /**< Opaque to pass to next node */
369 : u32 limited_transmit; /**< snd_nxt when limited transmit starts */
370 : u32 sw_if_index; /**< Interface for the connection */
371 :
372 : /* Delivery rate estimation */
373 : u64 delivered; /**< Total bytes delivered to peer */
374 : u64 app_limited; /**< Delivered when app-limited detected */
375 : f64 delivered_time; /**< Time last bytes were acked */
376 : f64 first_tx_time; /**< Send time for recently delivered/sent */
377 : u64 lost; /**< Total bytes lost */
378 : tcp_byte_tracker_t *bt; /**< Tx byte tracker */
379 :
380 : tcp_errors_t errors; /**< Soft connection errors */
381 :
382 : u32 iss; /**< initial sent sequence */
383 : u32 irs; /**< initial remote sequence */
384 : f64 start_ts; /**< Timestamp when connection initialized */
385 : u32 last_fib_check; /**< Last time we checked fib route for peer */
386 : u16 mss; /**< Our max seg size that includes options */
387 : u32 ipv6_flow_label; /**< flow label for ipv6 header */
388 :
389 : #define rst_state snd_wl1
390 : } tcp_connection_t;
391 :
392 : /* *INDENT-OFF* */
393 : struct _tcp_cc_algorithm
394 : {
395 : const char *name;
396 : uword (*unformat_cfg) (unformat_input_t * input);
397 : void (*init) (tcp_connection_t * tc);
398 : void (*cleanup) (tcp_connection_t * tc);
399 : void (*rcv_ack) (tcp_connection_t * tc, tcp_rate_sample_t *rs);
400 : void (*rcv_cong_ack) (tcp_connection_t * tc, tcp_cc_ack_t ack,
401 : tcp_rate_sample_t *rs);
402 : void (*congestion) (tcp_connection_t * tc);
403 : void (*loss) (tcp_connection_t * tc);
404 : void (*recovered) (tcp_connection_t * tc);
405 : void (*undo_recovery) (tcp_connection_t * tc);
406 : void (*event) (tcp_connection_t *tc, tcp_cc_event_t evt);
407 : u64 (*get_pacing_rate) (tcp_connection_t *tc);
408 : };
409 : /* *INDENT-ON* */
410 :
411 : #define tcp_fastrecovery_on(tc) (tc)->flags |= TCP_CONN_FAST_RECOVERY
412 : #define tcp_fastrecovery_off(tc) (tc)->flags &= ~TCP_CONN_FAST_RECOVERY
413 : #define tcp_recovery_on(tc) (tc)->flags |= TCP_CONN_RECOVERY
414 : #define tcp_recovery_off(tc) (tc)->flags &= ~TCP_CONN_RECOVERY
415 : #define tcp_in_fastrecovery(tc) ((tc)->flags & TCP_CONN_FAST_RECOVERY)
416 : #define tcp_in_recovery(tc) ((tc)->flags & (TCP_CONN_RECOVERY))
417 : #define tcp_in_slowstart(tc) (tc->cwnd < tc->ssthresh)
418 : #define tcp_disconnect_pending(tc) ((tc)->flags & TCP_CONN_DCNT_PENDING)
419 : #define tcp_disconnect_pending_on(tc) ((tc)->flags |= TCP_CONN_DCNT_PENDING)
420 : #define tcp_disconnect_pending_off(tc) ((tc)->flags &= ~TCP_CONN_DCNT_PENDING)
421 : #define tcp_fastrecovery_first(tc) ((tc)->flags & TCP_CONN_FRXT_FIRST)
422 : #define tcp_fastrecovery_first_on(tc) ((tc)->flags |= TCP_CONN_FRXT_FIRST)
423 : #define tcp_fastrecovery_first_off(tc) ((tc)->flags &= ~TCP_CONN_FRXT_FIRST)
424 :
425 : #define tcp_in_cong_recovery(tc) ((tc)->flags & \
426 : (TCP_CONN_FAST_RECOVERY | TCP_CONN_RECOVERY))
427 :
428 : always_inline void
429 4 : tcp_cong_recovery_off (tcp_connection_t * tc)
430 : {
431 4 : tc->flags &= ~(TCP_CONN_FAST_RECOVERY | TCP_CONN_RECOVERY);
432 4 : tcp_fastrecovery_first_off (tc);
433 4 : }
434 :
435 : #define tcp_csum_offload(tc) (!((tc)->cfg_flags & TCP_CFG_F_NO_CSUM_OFFLOAD))
436 :
437 : #define tcp_zero_rwnd_sent(tc) ((tc)->flags & TCP_CONN_ZERO_RWND_SENT)
438 : #define tcp_zero_rwnd_sent_on(tc) (tc)->flags |= TCP_CONN_ZERO_RWND_SENT
439 : #define tcp_zero_rwnd_sent_off(tc) (tc)->flags &= ~TCP_CONN_ZERO_RWND_SENT
440 :
441 : always_inline tcp_connection_t *
442 1063170 : tcp_get_connection_from_transport (transport_connection_t * tconn)
443 : {
444 1063170 : return (tcp_connection_t *) tconn;
445 : }
446 :
447 : /*
448 : * Define custom timer wheel geometry
449 : */
450 :
451 : #undef TW_TIMER_WHEELS
452 : #undef TW_SLOTS_PER_RING
453 : #undef TW_RING_SHIFT
454 : #undef TW_RING_MASK
455 : #undef TW_TIMERS_PER_OBJECT
456 : #undef LOG2_TW_TIMERS_PER_OBJECT
457 : #undef TW_SUFFIX
458 : #undef TW_OVERFLOW_VECTOR
459 : #undef TW_FAST_WHEEL_BITMAP
460 : #undef TW_TIMER_ALLOW_DUPLICATE_STOP
461 : #undef TW_START_STOP_TRACE_SIZE
462 :
463 : #define TW_TIMER_WHEELS 2
464 : #define TW_SLOTS_PER_RING 1024
465 : #define TW_RING_SHIFT 10
466 : #define TW_RING_MASK (TW_SLOTS_PER_RING -1)
467 : #define TW_TIMERS_PER_OBJECT 16
468 : #define LOG2_TW_TIMERS_PER_OBJECT 4
469 : #define TW_SUFFIX _tcp_twsl
470 : #define TW_FAST_WHEEL_BITMAP 0
471 : #define TW_TIMER_ALLOW_DUPLICATE_STOP 1
472 :
473 : #include <vppinfra/tw_timer_template.h>
474 :
475 : typedef tw_timer_wheel_tcp_twsl_t tcp_timer_wheel_t;
476 :
477 : #endif /* SRC_VNET_TCP_TCP_TYPES_H_ */
478 :
479 : /*
480 : * fd.io coding-style-patch-verification: ON
481 : *
482 : * Local Variables:
483 : * eval: (c-set-style "gnu")
484 : * End:
485 : */
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