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iwd
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network: Add network_rankmod

This commit is contained in:
Denis Kenzior 2015-06-18 06:11:14 -05:00
parent d3f0bd5e27
commit ce670bdcb1
2 changed files with 48 additions and 0 deletions
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47
src/network.c
View File

@ -138,6 +138,53 @@ fail:
return false;
}
/* First 64 entries calculated by 1 / pow(n, 0.3) for n >= 1 */
static const double rankmod_table[] = {
0.1000000000, 0.8122523964, 0.7192230933, 0.6597539554,
0.6170338627, 0.5841906811, 0.5577898253, 0.5358867313,
0.5172818580, 0.5011872336, 0.4870596972, 0.4745102806,
0.4632516708, 0.4530661223, 0.4437850034, 0.4352752816,
0.4274303178, 0.4201634287, 0.4134032816, 0.4070905315,
0.4011753236, 0.3956154062, 0.3903746872, 0.3854221125,
0.3807307877, 0.3762772797, 0.3720410580, 0.3680040435,
0.3641502401, 0.3604654325, 0.3569369365, 0.3535533906,
0.3503045821, 0.3471812999, 0.3441752105, 0.3412787518,
0.3384850430, 0.3357878061, 0.3331812996, 0.3306602598,
0.3282198502, 0.3258556179, 0.3235634544, 0.3213395618,
0.3191804229, 0.3170827751, 0.3150435863, 0.3130600345,
0.3111294892, 0.3092494947, 0.3074177553, 0.3056321221,
0.3038905808, 0.3021912409, 0.3005323264, 0.2989121662,
0.2973291870, 0.2957819051, 0.2942689208, 0.2927889114,
0.2913406263, 0.2899228820, 0.2885345572, 0.2871745887,
};
double network_rankmod(uint32_t type, const char *ssid)
{
const struct l_queue_entry *entry;
int n;
int nmax;
for (n = 0, entry = l_queue_get_entries(networks); entry;
entry = entry->next, n += 1) {
const struct network_info *info = entry->data;
if (info->type != type)
continue;
if (strcmp(info->ssid, ssid))
continue;
nmax = L_ARRAY_SIZE(rankmod_table);
if (n >= nmax)
n = nmax - 1;
return rankmod_table[n];
}
return 0.0;
}
void network_init()
{
networks = l_queue_new();

1
src/network.h
View File

@ -24,6 +24,7 @@
bool network_seen(uint32_t type, const char *ssid);
bool network_connected(uint32_t type, const char *ssid);
double network_rankmod(uint32_t type, const char *ssid);
void network_init();
void network_exit();