2 * Copyright (c) 2017 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:
7 * http://www.apache.org/licenses/LICENSE-2.0
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.
15 #include <vnet/tcp/tcp.h>
17 #define TCP_TEST_I(_cond, _comment, _args...) \
19 int _evald = (_cond); \
21 fformat(stderr, "FAIL:%d: " _comment "\n", \
24 fformat(stderr, "PASS:%d: " _comment "\n", \
30 #define TCP_TEST(_cond, _comment, _args...) \
32 if (!TCP_TEST_I(_cond, _comment, ##_args)) { \
40 tcp_connection_t _tc, *tc = &_tc;
41 sack_scoreboard_t *sb = &tc->sack_sb;
42 sack_block_t *sacks = 0, block;
43 sack_scoreboard_hole_t *hole;
46 memset (tc, 0, sizeof (*tc));
49 tc->snd_una_max = 1000;
51 tc->opt.flags |= TCP_OPTS_FLAG_SACK;
52 scoreboard_init (&tc->sack_sb);
54 for (i = 0; i < 1000 / 100; i++)
56 block.start = i * 100;
57 block.end = (i + 1) * 100;
58 vec_add1 (sacks, block);
65 for (i = 0; i < 1000 / 200; i++)
67 vec_add1 (tc->opt.sacks, sacks[i * 2]);
69 tc->opt.n_sack_blocks = vec_len (tc->opt.sacks);
70 tcp_rcv_sacks (tc, 0);
72 TCP_TEST ((pool_elts (sb->holes) == 5),
73 "scoreboard has %d elements", pool_elts (sb->holes));
75 /* First SACK block should be rejected */
76 hole = scoreboard_first_hole (sb);
77 TCP_TEST ((hole->start == 0 && hole->end == 200),
78 "first hole start %u end %u", hole->start, hole->end);
79 hole = scoreboard_last_hole (sb);
80 TCP_TEST ((hole->start == 900 && hole->end == 1000),
81 "last hole start %u end %u", hole->start, hole->end);
82 TCP_TEST ((sb->sacked_bytes == 400), "sacked bytes %d", sb->sacked_bytes);
83 TCP_TEST ((sb->snd_una_adv == 0), "snd_una_adv %u", sb->snd_una_adv);
84 TCP_TEST ((sb->last_sacked_bytes == 400),
85 "last sacked bytes %d", sb->last_sacked_bytes);
91 vec_reset_length (tc->opt.sacks);
92 for (i = 0; i < 1000 / 200; i++)
94 vec_add1 (tc->opt.sacks, sacks[i * 2 + 1]);
96 tc->opt.n_sack_blocks = vec_len (tc->opt.sacks);
97 tcp_rcv_sacks (tc, 0);
99 hole = scoreboard_first_hole (sb);
100 TCP_TEST ((pool_elts (sb->holes) == 1),
101 "scoreboard has %d holes", pool_elts (sb->holes));
102 TCP_TEST ((hole->start == 0 && hole->end == 100),
103 "first hole start %u end %u", hole->start, hole->end);
104 TCP_TEST ((sb->sacked_bytes == 900), "sacked bytes %d", sb->sacked_bytes);
105 TCP_TEST ((sb->snd_una_adv == 0), "snd_una_adv %u", sb->snd_una_adv);
106 TCP_TEST ((sb->max_byte_sacked == 1000),
107 "max sacked byte %u", sb->max_byte_sacked);
108 TCP_TEST ((sb->last_sacked_bytes == 500),
109 "last sacked bytes %d", sb->last_sacked_bytes);
112 * Ack until byte 100, all bytes are now acked + sacked
114 tcp_rcv_sacks (tc, 100);
116 TCP_TEST ((pool_elts (sb->holes) == 0),
117 "scoreboard has %d elements", pool_elts (sb->holes));
118 TCP_TEST ((sb->snd_una_adv == 900),
119 "snd_una_adv after ack %u", sb->snd_una_adv);
120 TCP_TEST ((sb->max_byte_sacked == 1000),
121 "max sacked byte %u", sb->max_byte_sacked);
122 TCP_TEST ((sb->sacked_bytes == 0), "sacked bytes %d", sb->sacked_bytes);
123 TCP_TEST ((sb->last_sacked_bytes == 0),
124 "last sacked bytes %d", sb->last_sacked_bytes);
130 vec_reset_length (tc->opt.sacks);
134 vec_add1 (tc->opt.sacks, block);
136 tc->snd_una_max = 1500;
139 tcp_rcv_sacks (tc, 1000);
141 TCP_TEST ((sb->snd_una_adv == 0),
142 "snd_una_adv after ack %u", sb->snd_una_adv);
143 TCP_TEST ((pool_elts (sb->holes) == 2),
144 "scoreboard has %d holes", pool_elts (sb->holes));
145 hole = scoreboard_first_hole (sb);
146 TCP_TEST ((hole->start == 1000 && hole->end == 1200),
147 "first hole start %u end %u", hole->start, hole->end);
148 hole = scoreboard_last_hole (sb);
149 TCP_TEST ((hole->start == 1300 && hole->end == 1500),
150 "last hole start %u end %u", hole->start, hole->end);
151 TCP_TEST ((sb->sacked_bytes == 100), "sacked bytes %d", sb->sacked_bytes);
157 vec_reset_length (tc->opt.sacks);
158 tcp_rcv_sacks (tc, 1200);
160 TCP_TEST ((sb->snd_una_adv == 100),
161 "snd_una_adv after ack %u", sb->snd_una_adv);
162 TCP_TEST ((sb->sacked_bytes == 0), "sacked bytes %d", sb->sacked_bytes);
163 TCP_TEST ((pool_elts (sb->holes) == 1),
164 "scoreboard has %d elements", pool_elts (sb->holes));
170 scoreboard_clear (sb);
171 TCP_TEST ((pool_elts (sb->holes) == 0),
172 "number of holes %d", pool_elts (sb->holes));
177 tcp_test_sack_tx (vlib_main_t * vm, unformat_input_t * input)
179 tcp_connection_t _tc, *tc = &_tc;
183 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
185 if (unformat (input, "verbose"))
189 vlib_cli_output (vm, "parse error: '%U'", format_unformat_error,
195 memset (tc, 0, sizeof (*tc));
198 * Add odd sack block pairs
200 for (i = 1; i < 10; i += 2)
202 tcp_update_sack_list (tc, i * 100, (i + 1) * 100);
205 TCP_TEST ((vec_len (tc->snd_sacks) == 5), "sack blocks %d expected %d",
206 vec_len (tc->snd_sacks), 5);
207 TCP_TEST ((tc->snd_sacks[0].start = 900),
208 "first sack block start %u expected %u", tc->snd_sacks[0].start,
212 * Try to add one extra
214 sacks = vec_dup (tc->snd_sacks);
216 tcp_update_sack_list (tc, 1100, 1200);
217 TCP_TEST ((vec_len (tc->snd_sacks) == 5), "sack blocks %d expected %d",
218 vec_len (tc->snd_sacks), 5);
219 TCP_TEST ((tc->snd_sacks[0].start == 1100),
220 "first sack block start %u expected %u", tc->snd_sacks[0].start,
224 vec_free (tc->snd_sacks);
225 tc->snd_sacks = sacks;
228 * Overlap first 2 segment
231 tcp_update_sack_list (tc, 300, 300);
233 vlib_cli_output (vm, "overlap first 2 segments:\n%U",
234 format_tcp_sacks, tc->snd_sacks);
235 TCP_TEST ((vec_len (tc->snd_sacks) == 3), "sack blocks %d expected %d",
236 vec_len (tc->snd_sacks), 3);
237 TCP_TEST ((tc->snd_sacks[0].start == 900),
238 "first sack block start %u expected %u", tc->snd_sacks[0].start,
244 tcp_update_sack_list (tc, 1100, 1200);
246 vlib_cli_output (vm, "add new segment [1100, 1200]\n%U",
247 format_tcp_sacks, tc->snd_sacks);
248 TCP_TEST ((vec_len (tc->snd_sacks) == 4), "sack blocks %d expected %d",
249 vec_len (tc->snd_sacks), 4);
250 TCP_TEST ((tc->snd_sacks[0].start == 1100),
251 "first sack block start %u expected %u", tc->snd_sacks[0].start,
255 * Join middle segments
257 tcp_update_sack_list (tc, 800, 900);
259 vlib_cli_output (vm, "join middle segments [800, 900]\n%U",
260 format_tcp_sacks, tc->snd_sacks);
262 TCP_TEST ((vec_len (tc->snd_sacks) == 3), "sack blocks %d expected %d",
263 vec_len (tc->snd_sacks), 3);
264 TCP_TEST ((tc->snd_sacks[0].start == 700),
265 "first sack block start %u expected %u", tc->snd_sacks[0].start,
269 * Advance rcv_nxt to overlap all
272 tcp_update_sack_list (tc, 1200, 1200);
274 vlib_cli_output (vm, "advance rcv_nxt to 1200\n%U",
275 format_tcp_sacks, tc->snd_sacks);
276 TCP_TEST ((vec_len (tc->snd_sacks) == 0), "sack blocks %d expected %d",
277 vec_len (tc->snd_sacks), 0);
282 tcp_test_sack (vlib_main_t * vm, unformat_input_t * input)
287 if (unformat_check_input (input) == UNFORMAT_END_OF_INPUT)
289 if (tcp_test_sack_tx (vm, input))
294 if (tcp_test_sack_rx ())
301 if (unformat (input, "tx"))
303 res = tcp_test_sack_tx (vm, input);
305 else if (unformat (input, "rx"))
307 res = tcp_test_sack_rx ();
322 test_pattern_t test_pattern[] = {
323 {380, 8}, {768, 8}, {1156, 8}, {1544, 8}, {1932, 8}, {2320, 8}, {2708, 8},
324 {2992, 8}, {372, 8}, {760, 8}, {1148, 8}, {1536, 8}, {1924, 8}, {2312, 8},
325 {2700, 8}, {2984, 8}, {364, 8}, {752, 8}, {1140, 8}, {1528, 8}, {1916, 8},
326 {2304, 8}, {2692, 8}, {2976, 8}, {356, 8}, {744, 8}, {1132, 8}, {1520, 8},
327 {1908, 8}, {2296, 8}, {2684, 8}, {2968, 8}, {348, 8}, {736, 8}, {1124, 8},
328 {1512, 8}, {1900, 8}, {2288, 8}, {2676, 8}, {2960, 8}, {340, 8}, {728, 8},
329 {1116, 8}, {1504, 8}, {1892, 8}, {2280, 8}, {2668, 8}, {2952, 8}, {332, 8},
330 {720, 8}, {1108, 8}, {1496, 8}, {1884, 8}, {2272, 8}, {2660, 8}, {2944, 8},
331 {324, 8}, {712, 8}, {1100, 8}, {1488, 8}, {1876, 8}, {2264, 8}, {2652, 8},
332 {2936, 8}, {316, 8}, {704, 8}, {1092, 8}, {1480, 8}, {1868, 8}, {2256, 8},
333 {2644, 8}, {2928, 8}, {308, 8}, {696, 8}, {1084, 8}, {1472, 8}, {1860, 8},
334 {2248, 8}, {2636, 8}, {2920, 8}, {300, 8}, {688, 8}, {1076, 8}, {1464, 8},
335 {1852, 8}, {2240, 8}, {2628, 8}, {2912, 8}, {292, 8}, {680, 8}, {1068, 8},
336 {1456, 8}, {1844, 8}, {2232, 8}, {2620, 8}, {2904, 8}, {284, 8}, {672, 8},
337 {1060, 8}, {1448, 8}, {1836, 8}, {2224, 8}, {2612, 8}, {2896, 8}, {276, 8},
338 {664, 8}, {1052, 8}, {1440, 8}, {1828, 8}, {2216, 8}, {2604, 8}, {2888, 8},
339 {268, 8}, {656, 8}, {1044, 8}, {1432, 8}, {1820, 8}, {2208, 8}, {2596, 8},
340 {2880, 8}, {260, 8}, {648, 8}, {1036, 8}, {1424, 8}, {1812, 8}, {2200, 8},
341 {2588, 8}, {2872, 8}, {252, 8}, {640, 8}, {1028, 8}, {1416, 8}, {1804, 8},
342 {2192, 8}, {2580, 8}, {2864, 8}, {244, 8}, {632, 8}, {1020, 8}, {1408, 8},
343 {1796, 8}, {2184, 8}, {2572, 8}, {2856, 8}, {236, 8}, {624, 8}, {1012, 8},
344 {1400, 8}, {1788, 8}, {2176, 8}, {2564, 8}, {2848, 8}, {228, 8}, {616, 8},
345 {1004, 8}, {1392, 8}, {1780, 8}, {2168, 8}, {2556, 8}, {2840, 8}, {220, 8},
346 {608, 8}, {996, 8}, {1384, 8}, {1772, 8}, {2160, 8}, {2548, 8}, {2832, 8},
347 {212, 8}, {600, 8}, {988, 8}, {1376, 8}, {1764, 8}, {2152, 8}, {2540, 8},
348 {2824, 8}, {204, 8}, {592, 8}, {980, 8}, {1368, 8}, {1756, 8}, {2144, 8},
349 {2532, 8}, {2816, 8}, {196, 8}, {584, 8}, {972, 8}, {1360, 8}, {1748, 8},
350 {2136, 8}, {2524, 8}, {2808, 8}, {188, 8}, {576, 8}, {964, 8}, {1352, 8},
351 {1740, 8}, {2128, 8}, {2516, 8}, {2800, 8}, {180, 8}, {568, 8}, {956, 8},
352 {1344, 8}, {1732, 8}, {2120, 8}, {2508, 8}, {2792, 8}, {172, 8}, {560, 8},
353 {948, 8}, {1336, 8}, {1724, 8}, {2112, 8}, {2500, 8}, {2784, 8}, {164, 8},
354 {552, 8}, {940, 8}, {1328, 8}, {1716, 8}, {2104, 8}, {2492, 8}, {2776, 8},
355 {156, 8}, {544, 8}, {932, 8}, {1320, 8}, {1708, 8}, {2096, 8}, {2484, 8},
356 {2768, 8}, {148, 8}, {536, 8}, {924, 8}, {1312, 8}, {1700, 8}, {2088, 8},
357 {2476, 8}, {2760, 8}, {140, 8}, {528, 8}, {916, 8}, {1304, 8}, {1692, 8},
358 {2080, 8}, {2468, 8}, {2752, 8}, {132, 8}, {520, 8}, {908, 8}, {1296, 8},
359 {1684, 8}, {2072, 8}, {2460, 8}, {2744, 8}, {124, 8}, {512, 8}, {900, 8},
360 {1288, 8}, {1676, 8}, {2064, 8}, {2452, 8}, {2736, 8}, {116, 8}, {504, 8},
361 {892, 8}, {1280, 8}, {1668, 8}, {2056, 8}, {2444, 8}, {2728, 8}, {108, 8},
362 {496, 8}, {884, 8}, {1272, 8}, {1660, 8}, {2048, 8}, {2436, 8}, {2720, 8},
363 {100, 8}, {488, 8}, {876, 8}, {1264, 8}, {1652, 8}, {2040, 8}, {2428, 8},
364 {2716, 4}, {92, 8}, {480, 8}, {868, 8}, {1256, 8}, {1644, 8}, {2032, 8},
365 {2420, 8}, {84, 8}, {472, 8}, {860, 8}, {1248, 8}, {1636, 8}, {2024, 8},
366 {2412, 8}, {76, 8}, {464, 8}, {852, 8}, {1240, 8}, {1628, 8}, {2016, 8},
367 {2404, 8}, {68, 8}, {456, 8}, {844, 8}, {1232, 8}, {1620, 8}, {2008, 8},
368 {2396, 8}, {60, 8}, {448, 8}, {836, 8}, {1224, 8}, {1612, 8}, {2000, 8},
369 {2388, 8}, {52, 8}, {440, 8}, {828, 8}, {1216, 8}, {1604, 8}, {1992, 8},
370 {2380, 8}, {44, 8}, {432, 8}, {820, 8}, {1208, 8}, {1596, 8}, {1984, 8},
371 {2372, 8}, {36, 8}, {424, 8}, {812, 8}, {1200, 8}, {1588, 8}, {1976, 8},
372 {2364, 8}, {28, 8}, {416, 8}, {804, 8}, {1192, 8}, {1580, 8}, {1968, 8},
373 {2356, 8}, {20, 8}, {408, 8}, {796, 8}, {1184, 8}, {1572, 8}, {1960, 8},
374 {2348, 8}, {12, 8}, {400, 8}, {788, 8}, {1176, 8}, {1564, 8}, {1952, 8},
375 {2340, 8}, {4, 8}, {392, 8}, {780, 8}, {1168, 8}, {1556, 8}, {1944, 8},
377 /* missing from original data set */
378 {388, 4}, {776, 4}, {1164, 4}, {1552, 4}, {1940, 4}, {2328, 4},
383 pattern_cmp (const void *arg1, const void *arg2)
385 test_pattern_t *a1 = (test_pattern_t *) arg1;
386 test_pattern_t *a2 = (test_pattern_t *) arg2;
388 if (a1->offset < a2->offset)
390 else if (a1->offset > a2->offset)
396 fifo_validate_pattern (vlib_main_t * vm, test_pattern_t * pattern,
399 test_pattern_t *tp = pattern;
402 /* Go through the pattern and make 100% sure it's sane */
403 for (i = 0; i < pattern_length - 1; i++)
405 if (tp->offset + tp->len != (tp + 1)->offset)
407 vlib_cli_output (vm, "[%d] missing {%d, %d}", i,
408 (tp->offset + tp->len),
409 (tp + 1)->offset - (tp->offset + tp->len));
417 static test_pattern_t *
418 fifo_get_validate_pattern (vlib_main_t * vm, test_pattern_t * test_data,
421 test_pattern_t *validate_pattern = 0;
423 /* Validate, and try segments in order... */
424 vec_validate (validate_pattern, test_data_len - 1);
425 memcpy (validate_pattern, test_data,
426 test_data_len * sizeof (test_pattern_t));
427 qsort ((u8 *) validate_pattern, test_data_len, sizeof (test_pattern_t),
430 if (fifo_validate_pattern (vm, validate_pattern, test_data_len) == 0)
433 return validate_pattern;
437 fifo_prepare (u32 fifo_size)
440 f = svm_fifo_create (fifo_size);
442 /* Paint fifo data vector with -1's */
443 memset (f->data, 0xFF, fifo_size);
449 compare_data (u8 * data1, u8 * data2, u32 start, u32 len, u32 * index)
453 for (i = start; i < len; i++)
455 if (data1[i] != data2[i])
465 tcp_test_fifo1 (vlib_main_t * vm, unformat_input_t * input)
468 u32 fifo_size = 1 << 20;
471 int i, rv, verbose = 0;
472 u32 data_word, test_data_len, j;
473 ooo_segment_t *ooo_seg;
474 u8 *data, *s, *data_buf = 0;
476 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
478 if (unformat (input, "verbose"))
482 test_data_len = fifo_size / sizeof (u32);
483 vec_validate (test_data, test_data_len - 1);
485 for (i = 0; i < vec_len (test_data); i++)
488 f = fifo_prepare (fifo_size);
491 * Enqueue an initial (un-dequeued) chunk
493 rv = svm_fifo_enqueue_nowait (f, sizeof (u32), (u8 *) test_data);
494 TCP_TEST ((rv == sizeof (u32)), "enqueued %d", rv);
495 TCP_TEST ((f->tail == 4), "fifo tail %u", f->tail);
498 * Create 3 chunks in the future. The offsets are relative
499 * to the current fifo tail
501 for (i = 0; i < 3; i++)
503 offset = (2 * i + 1) * sizeof (u32);
504 data = (u8 *) (test_data + (2 * i + 1));
505 rv = svm_fifo_enqueue_with_offset (f, offset, sizeof (u32), data);
507 vlib_cli_output (vm, "add [%d] [%d, %d]", 2 * i + 1, offset,
508 offset + sizeof (u32));
511 clib_warning ("enqueue returned %d", rv);
517 vlib_cli_output (vm, "fifo after odd segs: %U", format_svm_fifo, f, 1);
519 TCP_TEST ((f->tail == 8), "fifo tail %u", f->tail);
522 * Make sure format functions are not buggy
524 s = format (0, "%U", format_svm_fifo, f, 2);
528 * Paint some of missing data backwards
530 for (i = 3; i > 1; i--)
532 offset = (2 * i + 0) * sizeof (u32);
533 data = (u8 *) (test_data + (2 * i + 0));
534 rv = svm_fifo_enqueue_with_offset (f, offset, sizeof (u32), data);
536 vlib_cli_output (vm, "add [%d] [%d, %d]", 2 * i, offset,
537 offset + sizeof (u32));
540 clib_warning ("enqueue returned %d", rv);
546 vlib_cli_output (vm, "fifo before missing link: %U", format_svm_fifo, f,
548 TCP_TEST ((svm_fifo_number_ooo_segments (f) == 1),
549 "number of ooo segments %u", svm_fifo_number_ooo_segments (f));
550 ooo_seg = svm_fifo_first_ooo_segment (f);
551 TCP_TEST ((ooo_seg->start == 12),
552 "first ooo seg position %u", ooo_seg->start);
553 TCP_TEST ((ooo_seg->length == 16),
554 "first ooo seg length %u", ooo_seg->length);
557 * Enqueue the missing u32
559 rv = svm_fifo_enqueue_nowait (f, sizeof (u32), (u8 *) (test_data + 2));
561 vlib_cli_output (vm, "fifo after missing link: %U", format_svm_fifo, f,
563 TCP_TEST ((rv == 20), "bytes to be enqueued %u", rv);
564 TCP_TEST ((svm_fifo_number_ooo_segments (f) == 0),
565 "number of ooo segments %u", svm_fifo_number_ooo_segments (f));
570 for (i = 0; i < 7; i++)
572 rv = svm_fifo_dequeue_nowait (f, sizeof (u32), (u8 *) & data_word);
573 if (rv != sizeof (u32))
575 clib_warning ("bytes dequeues %u", rv);
578 if (data_word != test_data[i])
580 clib_warning ("recovered [%d] %d not %d", i, data_word,
587 * Test segment overlaps: last ooo segment overlaps all
590 f = fifo_prepare (fifo_size);
592 for (i = 0; i < 4; i++)
594 offset = (2 * i + 1) * sizeof (u32);
595 data = (u8 *) (test_data + (2 * i + 1));
596 rv = svm_fifo_enqueue_with_offset (f, offset, sizeof (u32), data);
598 vlib_cli_output (vm, "add [%d] [%d, %d]", 2 * i + 1, offset,
599 offset + sizeof (u32));
602 clib_warning ("enqueue returned %d", rv);
607 rv = svm_fifo_enqueue_with_offset (f, 8, 21, data);
608 TCP_TEST ((rv == 0), "ooo enqueued %u", rv);
609 TCP_TEST ((svm_fifo_number_ooo_segments (f) == 1),
610 "number of ooo segments %u", svm_fifo_number_ooo_segments (f));
612 vec_validate (data_buf, vec_len (data));
613 svm_fifo_peek (f, 0, vec_len (data), data_buf);
614 if (compare_data (data_buf, data, 8, vec_len (data), &j))
616 TCP_TEST (0, "[%d] peeked %u expected %u", j, data_buf[j], data[j]);
618 vec_reset_length (data_buf);
621 * Test segment overlaps: enqueue and overlap ooo segments
624 f = fifo_prepare (fifo_size);
626 for (i = 0; i < 4; i++)
628 offset = (2 * i + 1) * sizeof (u32);
629 data = (u8 *) (test_data + (2 * i + 1));
630 rv = svm_fifo_enqueue_with_offset (f, offset, sizeof (u32), data);
632 vlib_cli_output (vm, "add [%d] [%d, %d]", 2 * i + 1, offset,
633 offset + sizeof (u32));
636 clib_warning ("enqueue returned %d", rv);
641 rv = svm_fifo_enqueue_nowait (f, 29, data);
642 TCP_TEST ((rv == 32), "ooo enqueued %u", rv);
643 TCP_TEST ((svm_fifo_number_ooo_segments (f) == 0),
644 "number of ooo segments %u", svm_fifo_number_ooo_segments (f));
646 vec_validate (data_buf, vec_len (data));
647 svm_fifo_peek (f, 0, vec_len (data), data_buf);
648 if (compare_data (data_buf, data, 0, vec_len (data), &j))
650 TCP_TEST (0, "[%d] peeked %u expected %u", j, data_buf[j], data[j]);
655 vec_free (test_data);
661 vec_free (test_data);
666 tcp_test_fifo2 (vlib_main_t * vm)
669 u32 fifo_size = 1 << 20;
670 int i, rv, test_data_len;
672 test_pattern_t *tp, *vp, *test_data;
673 ooo_segment_t *ooo_seg;
675 test_data = test_pattern;
676 test_data_len = ARRAY_LEN (test_pattern);
678 vp = fifo_get_validate_pattern (vm, test_data, test_data_len);
681 f = fifo_prepare (fifo_size);
684 * Try with sorted data
686 for (i = 0; i < test_data_len; i++)
690 svm_fifo_enqueue_with_offset (f, tp->offset, tp->len, (u8 *) & data64);
693 /* Expected result: one big fat chunk at offset 4 */
694 TCP_TEST ((svm_fifo_number_ooo_segments (f) == 1),
695 "number of ooo segments %u", svm_fifo_number_ooo_segments (f));
696 ooo_seg = svm_fifo_first_ooo_segment (f);
697 TCP_TEST ((ooo_seg->start == 4),
698 "first ooo seg position %u", ooo_seg->start);
699 TCP_TEST ((ooo_seg->length == 2996),
700 "first ooo seg length %u", ooo_seg->length);
703 rv = svm_fifo_enqueue_nowait (f, sizeof (u32), (u8 *) & data64);
704 TCP_TEST ((rv == 3000), "bytes to be enqueued %u", rv);
710 * Now try it again w/ unsorted data...
713 f = fifo_prepare (fifo_size);
715 for (i = 0; i < test_data_len; i++)
719 rv = svm_fifo_enqueue_with_offset (f, tp->offset, tp->len,
723 clib_warning ("enqueue returned %d", rv);
727 /* Expecting the same result: one big fat chunk at offset 4 */
728 TCP_TEST ((svm_fifo_number_ooo_segments (f) == 1),
729 "number of ooo segments %u", svm_fifo_number_ooo_segments (f));
730 ooo_seg = svm_fifo_first_ooo_segment (f);
731 TCP_TEST ((ooo_seg->start == 4),
732 "first ooo seg position %u", ooo_seg->start);
733 TCP_TEST ((ooo_seg->length == 2996),
734 "first ooo seg length %u", ooo_seg->length);
737 rv = svm_fifo_enqueue_nowait (f, sizeof (u32), (u8 *) & data64);
739 TCP_TEST ((rv == 3000), "bytes to be enqueued %u", rv);
747 tcp_test_fifo3 (vlib_main_t * vm, unformat_input_t * input)
750 u32 fifo_size = 4 << 10;
751 u32 fifo_initial_offset = 0;
752 u32 total_size = 2 << 10;
753 int overlap = 0, verbose = 0, randomize = 1, drop = 0, in_seq_all = 0;
754 u8 *data_pattern = 0, *data_buf = 0;
755 test_pattern_t *tp, *generate = 0;
756 u32 nsegs = 2, seg_size, length_so_far;
757 u32 current_offset, offset_increment, len_this_chunk;
758 u32 seed = 0xdeaddabe, j;
761 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
763 if (unformat (input, "fifo-size %d", &fifo_size))
765 else if (unformat (input, "total-size %d", &total_size))
767 else if (unformat (input, "verbose"))
769 else if (unformat (input, "overlap"))
771 else if (unformat (input, "initial-offset %d", &fifo_initial_offset))
773 else if (unformat (input, "seed %d", &seed))
775 else if (unformat (input, "nsegs %d", &nsegs))
777 else if (unformat (input, "no-randomize"))
779 else if (unformat (input, "in-seq-all"))
781 else if (unformat (input, "drop"))
785 clib_error_t *e = clib_error_return
786 (0, "unknown input `%U'", format_unformat_error, input);
787 clib_error_report (e);
792 if (total_size > fifo_size)
794 clib_warning ("total_size %d greater than fifo size %d", total_size,
798 if (overlap && randomize == 0)
800 clib_warning ("Can't enqueue in-order with overlap");
807 vec_validate (data_pattern, total_size - 1);
808 for (i = 0; i < vec_len (data_pattern); i++)
809 data_pattern[i] = i & 0xff;
814 seg_size = total_size / nsegs;
816 current_offset = randomize;
817 while (length_so_far < total_size)
819 vec_add2 (generate, tp, 1);
820 len_this_chunk = clib_min (seg_size, total_size - length_so_far);
821 tp->offset = current_offset;
822 tp->len = len_this_chunk;
824 if (overlap && (len_this_chunk == seg_size))
827 offset_increment = len_this_chunk
828 % (1 + (random_u32 (&seed) % len_this_chunk));
830 while (offset_increment == 0);
832 offset_increment = len_this_chunk;
834 current_offset += offset_increment;
835 length_so_far = tp->offset + tp->len;
839 * Validate segment list. Only valid for non-overlap cases.
842 fifo_validate_pattern (vm, generate, vec_len (generate));
846 vlib_cli_output (vm, "raw data pattern:");
847 for (i = 0; i < vec_len (generate); i++)
849 vlib_cli_output (vm, "[%d] offset %u len %u", i,
850 generate[i].offset, generate[i].len);
854 /* Randomize data pattern */
857 for (i = 0; i < vec_len (generate) / 2; i++)
859 u32 src_index, dst_index;
860 test_pattern_t _tmp, *tmp = &_tmp;
862 src_index = random_u32 (&seed) % vec_len (generate);
863 dst_index = random_u32 (&seed) % vec_len (generate);
865 tmp[0] = generate[dst_index];
866 generate[dst_index] = generate[src_index];
867 generate[src_index] = tmp[0];
871 vlib_cli_output (vm, "randomized data pattern:");
872 for (i = 0; i < vec_len (generate); i++)
874 vlib_cli_output (vm, "[%d] offset %u len %u", i,
875 generate[i].offset, generate[i].len);
881 * Create a fifo and add segments
883 f = fifo_prepare (fifo_size);
885 /* manually set head and tail pointers to validate modular arithmetic */
886 fifo_initial_offset = fifo_initial_offset % fifo_size;
887 f->head = fifo_initial_offset;
888 f->tail = fifo_initial_offset;
890 for (i = 0; i < vec_len (generate); i++)
893 svm_fifo_enqueue_with_offset (f, fifo_initial_offset + tp->offset,
895 (u8 *) data_pattern + tp->offset);
899 * Expected result: one big fat chunk at offset 1 if randomize == 1
903 vlib_cli_output (vm, "fifo before missing link: %U",
904 format_svm_fifo, f, 1 /* verbose */ );
907 * Add the missing byte if segments were randomized
911 u32 bytes_to_enq = 1;
913 bytes_to_enq = total_size;
914 rv = svm_fifo_enqueue_nowait (f, bytes_to_enq, data_pattern + 0);
917 vlib_cli_output (vm, "in-order enqueue returned %d", rv);
919 TCP_TEST ((rv == total_size), "enqueued %u expected %u", rv,
924 TCP_TEST ((svm_fifo_has_ooo_data (f) == 0), "number of ooo segments %u",
925 svm_fifo_number_ooo_segments (f));
928 * Test if peeked data is the same as original data
930 vec_validate (data_buf, vec_len (data_pattern));
931 svm_fifo_peek (f, 0, vec_len (data_pattern), data_buf);
932 if (compare_data (data_buf, data_pattern, 0, vec_len (data_pattern), &j))
934 TCP_TEST (0, "[%d] peeked %u expected %u", j, data_buf[j],
937 vec_reset_length (data_buf);
940 * Dequeue or drop all data
944 svm_fifo_dequeue_drop (f, vec_len (data_pattern));
948 svm_fifo_dequeue_nowait (f, vec_len (data_pattern), data_buf);
950 (data_buf, data_pattern, 0, vec_len (data_pattern), &j))
952 TCP_TEST (0, "[%d] dequeued %u expected %u", j, data_buf[j],
957 TCP_TEST ((svm_fifo_max_dequeue (f) == 0), "fifo has %d bytes",
958 svm_fifo_max_dequeue (f));
961 vec_free (data_pattern);
968 tcp_test_fifo (vlib_main_t * vm, unformat_input_t * input)
974 if (unformat_check_input (input) == UNFORMAT_END_OF_INPUT)
976 res = tcp_test_fifo1 (vm, input);
980 res = tcp_test_fifo2 (vm);
985 * Run a number of fifo3 configs
987 str = "nsegs 10 overlap seed 123";
988 unformat_init_cstring (input, str);
989 if (tcp_test_fifo3 (vm, input))
991 unformat_free (input);
993 str = "nsegs 10 overlap seed 123 in-seq-all";
994 unformat_init_cstring (input, str);
995 if (tcp_test_fifo3 (vm, input))
997 unformat_free (input);
999 str = "nsegs 10 overlap seed 123 initial-offset 3917";
1000 unformat_init_cstring (input, str);
1001 if (tcp_test_fifo3 (vm, input))
1003 unformat_free (input);
1005 str = "nsegs 10 overlap seed 123 initial-offset 3917 drop";
1006 unformat_init_cstring (input, str);
1007 if (tcp_test_fifo3 (vm, input))
1009 unformat_free (input);
1011 str = "nsegs 10 seed 123 initial-offset 3917 drop no-randomize";
1012 unformat_init_cstring (input, str);
1013 if (tcp_test_fifo3 (vm, input))
1015 unformat_free (input);
1019 if (unformat (input, "fifo3"))
1021 res = tcp_test_fifo3 (vm, input);
1023 else if (unformat (input, "fifo2"))
1025 res = tcp_test_fifo2 (vm);
1027 else if (unformat (input, "fifo1"))
1029 res = tcp_test_fifo1 (vm, input);
1037 tcp_test_session (vlib_main_t * vm, unformat_input_t * input)
1040 tcp_connection_t *tc0;
1041 u8 sst = SESSION_TYPE_IP4_TCP;
1042 ip4_address_t local, remote;
1043 u16 local_port, remote_port;
1044 tcp_main_t *tm = vnet_get_tcp_main ();
1048 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
1050 if (unformat (input, "del"))
1052 else if (unformat (input, "add"))
1060 local.as_u32 = clib_host_to_net_u32 (0x06000101);
1061 remote.as_u32 = clib_host_to_net_u32 (0x06000102);
1062 local_port = clib_host_to_net_u16 (1234);
1063 remote_port = clib_host_to_net_u16 (11234);
1065 pool_get (tm->connections[0], tc0);
1066 memset (tc0, 0, sizeof (*tc0));
1068 tc0->state = TCP_STATE_ESTABLISHED;
1070 tc0->c_c_index = tc0 - tm->connections[0];
1071 tc0->c_lcl_port = local_port;
1072 tc0->c_rmt_port = remote_port;
1074 tc0->c_thread_index = 0;
1075 tc0->c_lcl_ip4.as_u32 = local.as_u32;
1076 tc0->c_rmt_ip4.as_u32 = remote.as_u32;
1077 tc0->opt.mss = 1450;
1078 tcp_connection_init_vars (tc0);
1080 TCP_EVT_DBG (TCP_EVT_OPEN, tc0);
1082 if (stream_session_accept (&tc0->connection, 0 /* listener index */ ,
1083 sst, 0 /* notify */ ))
1084 clib_warning ("stream_session_accept failed");
1086 stream_session_accept_notify (&tc0->connection);
1090 tc0 = tcp_connection_get (0 /* connection index */ , 0 /* thread */ );
1091 tc0->state = TCP_STATE_CLOSED;
1092 stream_session_disconnect_notify (&tc0->connection);
1098 static clib_error_t *
1099 tcp_test (vlib_main_t * vm,
1100 unformat_input_t * input, vlib_cli_command_t * cmd_arg)
1104 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
1106 if (unformat (input, "sack"))
1108 res = tcp_test_sack (vm, input);
1110 else if (unformat (input, "fifo"))
1112 res = tcp_test_fifo (vm, input);
1114 else if (unformat (input, "session"))
1116 res = tcp_test_session (vm, input);
1124 return clib_error_return (0, "TCP unit test failed");
1133 VLIB_CLI_COMMAND (tcp_test_command, static) =
1136 .short_help = "internal tcp unit tests",
1137 .function = tcp_test,
1143 * fd.io coding-style-patch-verification: ON
1146 * eval: (c-set-style "gnu")