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dawn_iwinfo: fix bug in use of get_bandwidth_iwinfo

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Fixed bug in use of get_bandwidth_iwinfo() in AP kicking
Fix rounding of transmission rate calculations in get_bandwidth_iwinfo()
Restructure of get_bandwidth() while finding bug
This commit is contained in:
Ian Clowes 2022-01-05 16:08:50 +01:00 committed by Nick Hainke
parent 94b2bc42a1
commit b0aa1c0d15
1 changed files with 29 additions and 31 deletions
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60
src/utils/dawn_iwinfo.c
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@ -89,54 +89,52 @@ int get_bandwidth_iwinfo(struct dawn_mac client_addr, float *rx_rate, float *tx_
struct dirent *entry;
dirp = opendir(hostapd_dir_glob); // error handling?
if (!dirp) {
fprintf(stderr, "[BANDWIDTH INFO] Failed to open %s\n", hostapd_dir_glob);
fprintf(stderr,"[BANDWIDTH INFO] Failed to open %s\n", hostapd_dir_glob);
return 0;
}
else
{
fprintf(stderr,"[BANDWIDTH INFO] Opened %s\n", hostapd_dir_glob);
}
int sucess = 0;
while ((entry = readdir(dirp)) != NULL) {
while (!sucess && ((entry = readdir(dirp)) != NULL)) {
if (entry->d_type == DT_SOCK) {
if (get_bandwidth(entry->d_name, client_addr, rx_rate, tx_rate)) {
sucess = 1;
break;
}
fprintf(stdout,"[BANDWIDTH INFO] Trying %s\n", entry->d_name);
sucess = get_bandwidth(entry->d_name, client_addr, rx_rate, tx_rate);
}
}
closedir(dirp);
return sucess;
}
int get_bandwidth(const char *ifname, struct dawn_mac client_addr, float *rx_rate, float *tx_rate) {
int ret = 0;
int i, len;
char buf[IWINFO_BUFSIZE];
struct iwinfo_assoclist_entry *e;
const struct iwinfo_ops *iw;
if (strcmp(ifname, "global") == 0)
return 0;
iw = iwinfo_backend(ifname);
if (strcmp(ifname, "global") != 0)
{
const struct iwinfo_ops* iw = iwinfo_backend(ifname);
char buf[IWINFO_BUFSIZE];
int len;
if (iw->assoclist(ifname, buf, &len) == 0 && len > 0)
{
struct iwinfo_assoclist_entry* e = (struct iwinfo_assoclist_entry*)buf;
for (int i = 0; ret == 0 && i < len; i += sizeof(struct iwinfo_assoclist_entry)) {
if (mac_is_equal(client_addr.u8, e->mac)) {
*rx_rate = e->rx_rate.rate / 1000.0;
*tx_rate = e->tx_rate.rate / 1000.0;
if (iw->assoclist(ifname, buf, &len)) {
iwinfo_finish();
return 0;
} else if (len <= 0) {
iwinfo_finish();
return 0;
}
for (i = 0; i < len; i += sizeof(struct iwinfo_assoclist_entry)) {
e = (struct iwinfo_assoclist_entry *) &buf[i];
if (mac_is_equal(client_addr.u8, e->mac)) {
*rx_rate = e->rx_rate.rate / 1000;
*tx_rate = e->tx_rate.rate / 1000;
iwinfo_finish();
return 1;
ret = 1;
}
e++;
}
}
iwinfo_finish();
}
iwinfo_finish();
return 0;
return ret;
}
int get_rssi_iwinfo(struct dawn_mac client_addr) {