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wpa_supplicant: Add get_capability freq

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Add "get_capability freq" command to print a more verbose list of
channels and frequencies in MHz. The tag "NO_IBSS" is added, if IBSS
mode is not allowed on a channel. This allows userspace programs to get
the frequencies and limitations associated with each channel.

This extends the information already provided in "get_capability
channels" but a new interface is chosen because of backwards
compatibility considerations.

Signed-hostap: Bruno Randolf <br1@einfach.org>
This commit is contained in:
Bruno Randolf 2013-04-23 16:55:54 +03:00 committed by Jouni Malinen
parent c7a39ba4e1
commit 060605226f
2 changed files with 58 additions and 1 deletions
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57
wpa_supplicant/ctrl_iface.c
View file

@ -2944,6 +2944,60 @@ static int ctrl_iface_get_capability_channels(struct wpa_supplicant *wpa_s,
}
static int ctrl_iface_get_capability_freq(struct wpa_supplicant *wpa_s,
char *buf, size_t buflen)
{
struct hostapd_channel_data *chnl;
int ret, i, j;
char *pos, *end, *hmode;
pos = buf;
end = pos + buflen;
for (j = 0; j < wpa_s->hw.num_modes; j++) {
switch (wpa_s->hw.modes[j].mode) {
case HOSTAPD_MODE_IEEE80211B:
hmode = "B";
break;
case HOSTAPD_MODE_IEEE80211G:
hmode = "G";
break;
case HOSTAPD_MODE_IEEE80211A:
hmode = "A";
break;
case HOSTAPD_MODE_IEEE80211AD:
hmode = "AD";
break;
default:
continue;
}
ret = os_snprintf(pos, end - pos, "Mode[%s] Channels:\n",
hmode);
if (ret < 0 || ret >= end - pos)
return pos - buf;
pos += ret;
chnl = wpa_s->hw.modes[j].channels;
for (i = 0; i < wpa_s->hw.modes[j].num_channels; i++) {
if (chnl[i].flag & HOSTAPD_CHAN_DISABLED)
continue;
ret = os_snprintf(pos, end - pos, " %d = %d MHz%s\n",
chnl[i].chan, chnl[i].freq,
chnl[i].flag & HOSTAPD_CHAN_NO_IBSS ?
" (NO_IBSS)" : "");
if (ret < 0 || ret >= end - pos)
return pos - buf;
pos += ret;
}
ret = os_snprintf(pos, end - pos, "\n");
if (ret < 0 || ret >= end - pos)
return pos - buf;
pos += ret;
}
return pos - buf;
}
static int wpa_supplicant_ctrl_iface_get_capability(
struct wpa_supplicant *wpa_s, const char *_field, char *buf,
size_t buflen)
@ -3001,6 +3055,9 @@ static int wpa_supplicant_ctrl_iface_get_capability(
if (os_strcmp(field, "channels") == 0)
return ctrl_iface_get_capability_channels(wpa_s, buf, buflen);
if (os_strcmp(field, "freq") == 0)
return ctrl_iface_get_capability_freq(wpa_s, buf, buflen);
wpa_printf(MSG_DEBUG, "CTRL_IFACE: Unknown GET_CAPABILITY field '%s'",
field);

2
wpa_supplicant/wpa_cli.c
View file

@ -2445,7 +2445,7 @@ static struct wpa_cli_cmd wpa_cli_commands[] = {
"<<idx> | <bssid>> = get detailed scan result info" },
{ "get_capability", wpa_cli_cmd_get_capability, NULL,
cli_cmd_flag_none,
"<eap/pairwise/group/key_mgmt/proto/auth_alg/channels/modes> "
"<eap/pairwise/group/key_mgmt/proto/auth_alg/channels/freq/modes> "
"= get capabilies" },
{ "reconfigure", wpa_cli_cmd_reconfigure, NULL,
cli_cmd_flag_none,