drivers/net/wireless/intel/iwlwifi/mvm/tests/scan.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * KUnit tests for channel helper functions
   4  *
   5  * Copyright (C) 2024 Intel Corporation
   6  */
   7 #include <net/mac80211.h>
   8 #include "../mvm.h"
   9 #include <kunit/test.h>
  10
  11 MODULE_IMPORT_NS("EXPORTED_FOR_KUNIT_TESTING");
  12
  13 static const struct acs_average_db_case {
  14         const char *desc;
  15         u8 neg_dbm[22];
  16         s8 result;
  17 } acs_average_db_cases[] = {
  18         {
  19                 .desc = "Smallest possible value, all filled",
  20                 .neg_dbm = {
  21                         128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
  22                         128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
  23                         128, 128
  24                 },
  25                 .result = -128,
  26         },
  27         {
  28                 .desc = "Biggest possible value, all filled",
  29                 .neg_dbm = {
  30                         0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  31                         0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  32                         0, 0,
  33                 },
  34                 .result = 0,
  35         },
  36         {
  37                 .desc = "Smallest possible value, partial filled",
  38                 .neg_dbm = {
  39                         128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
  40                         0xff, 0xff, 0xff, 0xff, 0xff,
  41                         0xff, 0xff, 0xff, 0xff, 0xff,
  42                         0xff, 0xff,
  43                 },
  44                 .result = -128,
  45         },
  46         {
  47                 .desc = "Biggest possible value, partial filled",
  48                 .neg_dbm = {
  49                         0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  50                         0xff, 0xff, 0xff, 0xff, 0xff,
  51                         0xff, 0xff, 0xff, 0xff, 0xff,
  52                         0xff, 0xff,
  53                 },
  54                 .result = 0,
  55         },
  56         {
  57                 .desc = "Adding -80dBm to -75dBm until it is still rounded to -79dBm",
  58                 .neg_dbm = {
  59                         75, 80, 80, 80, 80, 80, 80, 80, 80, 80,
  60                         80, 80, 80, 80, 80, 80, 80, 0xff, 0xff, 0xff,
  61                         0xff, 0xff,
  62                 },
  63                 .result = -79,
  64         },
  65         {
  66                 .desc = "Adding -80dBm to -75dBm until it is just rounded to -80dBm",
  67                 .neg_dbm = {
  68                         75, 80, 80, 80, 80, 80, 80, 80, 80, 80,
  69                         80, 80, 80, 80, 80, 80, 80, 80, 0xff, 0xff,
  70                         0xff, 0xff,
  71                 },
  72                 .result = -80,
  73         },
  74 };
  75
  76 KUNIT_ARRAY_PARAM_DESC(acs_average_db, acs_average_db_cases, desc)
  77
  78 static void test_acs_average_db(struct kunit *test)
  79 {
  80         const struct acs_average_db_case *params = test->param_value;
  81         struct iwl_umac_scan_channel_survey_notif notif;
  82         int i;
  83
  84         /* Test the values in the given order */
  85         for (i = 0; i < ARRAY_SIZE(params->neg_dbm); i++)
  86                 notif.noise[i] = params->neg_dbm[i];
  87         KUNIT_ASSERT_EQ(test,
  88                         iwl_mvm_average_dbm_values(&notif),
  89                         params->result);
  90
  91         /* Test in reverse order */
  92         for (i = 0; i < ARRAY_SIZE(params->neg_dbm); i++)
  93                 notif.noise[ARRAY_SIZE(params->neg_dbm) - i - 1] =
  94                         params->neg_dbm[i];
  95         KUNIT_ASSERT_EQ(test,
  96                         iwl_mvm_average_dbm_values(&notif),
  97                         params->result);
  98 }
  99
 100 static struct kunit_case acs_average_db_case[] = {
 101         KUNIT_CASE_PARAM(test_acs_average_db, acs_average_db_gen_params),
 102         {}
 103 };
 104
 105 static struct kunit_suite acs_average_db = {
 106         .name = "iwlmvm-acs-average-db",
 107         .test_cases = acs_average_db_case,
 108 };
 109
 110 kunit_test_suite(acs_average_db);