/* * Copyright (c) 2019 Cisco and/or its affiliates. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include <vppinfra/llist.h> #include <vlib/vlib.h> #define LLIST_TEST_I(_cond, _comment, _args...) \ ({ \ int _evald = (_cond); \ if (!(_evald)) { \ fformat(stderr, "FAIL:%d: " _comment "\n", \ __LINE__, ##_args); \ } else { \ fformat(stderr, "PASS:%d: " _comment "\n", \ __LINE__, ##_args); \ } \ _evald; \ }) #define LLIST_TEST(_cond, _comment, _args...) \ { \ if (!LLIST_TEST_I(_cond, _comment, ##_args)) { \ return 1; \ } \ } typedef struct list_elt { clib_llist_anchor_t ll_test; clib_llist_anchor_t ll_test2; u32 data; } list_elt_t; #define list_elt_is_sane(pl,name,E,P,N) \ (E->name.next == (N) - pl \ && E->name.prev == (P) - pl \ && P->name.next == (E) - pl \ && N->name.prev == (E) - pl) #define list_test_is_sane(pl,name,h) \ do { \ typeof (pl) e; \ int rv; \ clib_llist_foreach (pl, name, h, e, ({ \ rv = list_elt_is_sane ((pl), name, (e), \ clib_llist_prev (pl,name,e), \ clib_llist_next (pl,name,e)); \ if (!rv) \ LLIST_TEST (0, "invalid elt %u prev %u/%u next %u/%u", e - pl, \ e->name.prev, clib_llist_prev (pl,name,e) - pl, \ e->name.next, clib_llist_next (pl,name,e) - pl); \ })); \ } while (0) static int llist_test_basic (vlib_main_t * vm, unformat_input_t * input) { list_elt_t *pelts = 0, *he, *he2, *he3, *e, *next, *nnext; int __clib_unused verbose, i, rv; clib_llist_index_t head, head2, head3; u32 old_tail; while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) { if (unformat (input, "verbose")) verbose = 1; else { vlib_cli_output (vm, "parse error: '%U'", format_unformat_error, input); return -1; } } head = clib_llist_make_head (pelts, ll_test); he = clib_llist_elt (pelts, head); LLIST_TEST (he->ll_test.next == head, "head next points to itself"); LLIST_TEST (he->ll_test.prev == head, "head prev points to itself"); LLIST_TEST (he == clib_llist_next (pelts, ll_test, he), "should be the same"); LLIST_TEST (he == clib_llist_prev (pelts, ll_test, he), "should be the same"); /* * Add and remove one element */ clib_llist_get (pelts, e); e->data = 1; he = clib_llist_elt (pelts, head); clib_llist_add (pelts, ll_test, e, he); LLIST_TEST (e->ll_test.next == head, "next should be head"); LLIST_TEST (e->ll_test.prev == head, "prev should be head"); LLIST_TEST (he->ll_test.prev == e - pelts, "prev should be new"); LLIST_TEST (he->ll_test.next == e - pelts, "prev should be new"); clib_llist_remove (pelts, ll_test, e); clib_llist_put (pelts, e); LLIST_TEST (he->ll_test.prev == head, "prev should be head"); LLIST_TEST (he->ll_test.prev == head, "next should be head"); LLIST_TEST (he == clib_llist_next (pelts, ll_test, he), "should be the same"); LLIST_TEST (he == clib_llist_prev (pelts, ll_test, he), "should be the same"); /* * Add multiple head elements and test insertion */ for (i = 0; i < 100; i++) { clib_llist_get (pelts, e); e->data = i; he = clib_llist_elt (pelts, head); clib_llist_add (pelts, ll_test, e, he); } he = clib_llist_elt (pelts, head); LLIST_TEST (!clib_llist_is_empty (pelts, ll_test, he), "shoud not be empty"); list_test_is_sane (pelts, ll_test, he); i--; /* *INDENT-OFF* */ clib_llist_foreach (pelts, ll_test, he, e, ({ if (i != e->data) LLIST_TEST (0, "incorrect element i = %u data = %u", i, e->data); i--; })); /* *INDENT-ON* */ LLIST_TEST (i == -1, "head insertion works i = %d", i); /* * Remove elements from head */ i = 99; e = clib_llist_next (pelts, ll_test, he); while (e != he) { next = clib_llist_next (pelts, ll_test, e); clib_llist_remove (pelts, ll_test, e); clib_llist_put (pelts, e); i--; e = next; } he = clib_llist_elt (pelts, head); list_test_is_sane (pelts, ll_test, he); LLIST_TEST (clib_llist_is_empty (pelts, ll_test, he), "list should be empty"); LLIST_TEST (clib_llist_elts (pelts) == 1, "pool should have only 1 element"); /* * Add tail elements to ll_test2 and test */ head2 = clib_llist_make_head (pelts, ll_test2); for (i = 0; i < 100; i++) { clib_llist_get (pelts, e); e->data = i; he2 = clib_llist_elt (pelts, head2); clib_llist_add_tail (pelts, ll_test2, e, he2); } he2 = clib_llist_elt (pelts, head2); list_test_is_sane (pelts, ll_test2, he2); LLIST_TEST (!clib_llist_is_empty (pelts, ll_test2, he2), "list should not be empty"); i--; /* *INDENT-OFF* */ clib_llist_foreach_reverse (pelts, ll_test2, he2, e, ({ if (i != e->data) LLIST_TEST (0, "incorrect element i = %u data = %u", i, e->data); i--; })); /* *INDENT-ON* */ LLIST_TEST (i == -1, "tail insertion works"); /* * Remove in from ll_test2 and add to ll_test */ i = 0; he = clib_llist_elt (pelts, head); e = clib_llist_next (pelts, ll_test2, he2); while (e != he2) { next = clib_llist_next (pelts, ll_test2, e); if (e->data != i) LLIST_TEST (0, "incorrect element i = %u data = %u", i, e->data); clib_llist_remove (pelts, ll_test2, e); clib_llist_add_tail (pelts, ll_test, e, he); i++; e = next; } he = clib_llist_elt (pelts, head); he2 = clib_llist_elt (pelts, head2); list_test_is_sane (pelts, ll_test, he); LLIST_TEST (!clib_llist_is_empty (pelts, ll_test, he), "shoud not be empty"); LLIST_TEST (clib_llist_is_empty (pelts, ll_test2, he2), "shoud be empty"); i = 0; /* *INDENT-OFF* */ clib_llist_foreach (pelts, ll_test, he, e, ({ if (i != e->data) LLIST_TEST (0, "incorrect element i = %u data = %u", i, e->data); i++; })); /* *INDENT-ON* */ LLIST_TEST (i == 100, "move from ll_test2 to ll_test worked i %u", i); /* * Delete and insert at random position */ e = clib_llist_elt (pelts, head); for (i = 0; i < 10; i++) e = clib_llist_next (pelts, ll_test, e); next = clib_llist_next (pelts, ll_test, e); nnext = clib_llist_next (pelts, ll_test, next); LLIST_TEST (e->data == 9, "data should be 9 is %u", e->data); LLIST_TEST (next->data == 10, "data should be 10"); LLIST_TEST (nnext->data == 11, "data should be 11"); clib_llist_remove (pelts, ll_test, next); clib_llist_put (pelts, next); memset (next, 0xfc, sizeof (*next)); next = clib_llist_next (pelts, ll_test, e); LLIST_TEST (next->data == 11, "data should be 11"); LLIST_TEST (next == nnext, "should be nnext"); clib_llist_get (pelts, next); next->data = 10; clib_llist_insert (pelts, ll_test, next, e); next = clib_llist_next (pelts, ll_test, e); LLIST_TEST (next->data == 10, "new next data should be 10"); next = clib_llist_next (pelts, ll_test, next); LLIST_TEST (nnext == next, "next should be linked to old nnext"); he = clib_llist_elt (pelts, head); list_test_is_sane (pelts, ll_test, he); /* * Make a new list that uses ll_test anchor */ head3 = clib_llist_make_head (pelts, ll_test); for (i = 0; i < 10; i++) { clib_llist_get (pelts, e); e->data = 300 + i; he3 = clib_llist_elt (pelts, head3); clib_llist_add (pelts, ll_test, e, he3); } he = clib_llist_elt (pelts, head); he3 = clib_llist_elt (pelts, head3); list_test_is_sane (pelts, ll_test, he3); e = clib_llist_prev (pelts, ll_test, he); old_tail = e->data; /* * Splice third list into the tail of the first */ clib_llist_splice (pelts, ll_test, e, he3); list_test_is_sane (pelts, ll_test, he); LLIST_TEST (clib_llist_is_empty (pelts, ll_test, he3), "should be empty"); e = clib_llist_prev (pelts, ll_test, he); LLIST_TEST (e->data == 300, "data for last spliced should be 300 is %u", e->data); for (i = 0; i < 10; i++) { if (e->data != 300 + i) LLIST_TEST (0, "incorrect element i = %u data = %u", i, e->data); e = clib_llist_prev (pelts, ll_test, e); } LLIST_TEST (e->data == old_tail, "data should be old tail %u is %u", old_tail, e->data); /* * Cleanup */ clib_llist_free (pelts); return 0; } static clib_error_t * llist_test (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd_arg) { int res = 0; while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) { if (unformat (input, "basic")) { res = llist_test_basic (vm, input); } else if (unformat (input, "all")) { if ((res = llist_test_basic (vm, input))) goto done; } else break; } done: if (res) return clib_error_return (0, "llist unit test failed"); return 0; } /* *INDENT-OFF* */ VLIB_CLI_COMMAND (llist_test_command, static) = { .path = "test llist", .short_help = "internal llist unit tests", .function = llist_test, }; /* *INDENT-ON* */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */