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hostapd: Allow ACS to be offloaded to the driver

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Using QCA vendor command, allow ACS function to be offloaded to the
driver. Once channels are selected, hostapd is notified to perform OBSS
operation.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This commit is contained in:
Peng Xu 2014-11-18 20:11:09 +02:00 • committed by Jouni Malinen
parent f34891a3af
commit 16689c7cfc
10 changed files with 242 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

8
src/ap/acs.c
View file

@ -816,6 +816,14 @@ enum hostapd_chan_status acs_init(struct hostapd_iface *iface)
wpa_printf(MSG_INFO, "ACS: Automatic channel selection started, this may take a bit");
if (iface->drv_flags & WPA_DRIVER_FLAGS_ACS_OFFLOAD) {
wpa_printf(MSG_INFO, "ACS: Offloading to driver");
err = hostapd_drv_do_acs(iface->bss[0]);
if (err)
return HOSTAPD_CHAN_INVALID;
return HOSTAPD_CHAN_ACS;
}
acs_cleanup(iface);
err = acs_request_scan(iface);

15
src/ap/ap_drv_ops.c
View file

@ -793,3 +793,18 @@ int hostapd_drv_set_qos_map(struct hostapd_data *hapd,
return hapd->driver->set_qos_map(hapd->drv_priv, qos_map_set,
qos_map_set_len);
}
int hostapd_drv_do_acs(struct hostapd_data *hapd)
{
struct drv_acs_params params;
if (hapd->driver == NULL || hapd->driver->do_acs == NULL)
return 0;
os_memset(&params, 0, sizeof(params));
params.hw_mode = hapd->iface->conf->hw_mode;
params.ht_enabled = !!(hapd->iface->conf->ieee80211n);
params.ht40_enabled = !!(hapd->iface->conf->ht_capab |
HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET);
return hapd->driver->do_acs(hapd->drv_priv, &params);
}

1
src/ap/ap_drv_ops.h
View file

@ -111,6 +111,7 @@ int hostapd_set_freq_params(struct hostapd_freq_params *data, int mode,
int vht_enabled, int sec_channel_offset,
int vht_oper_chwidth, int center_segment0,
int center_segment1, u32 vht_caps);
int hostapd_drv_do_acs(struct hostapd_data *hapd);
#include "drivers/driver.h"

52
src/ap/drv_callbacks.c
View file

@ -525,6 +525,51 @@ void hostapd_event_connect_failed_reason(struct hostapd_data *hapd,
}
#ifdef CONFIG_ACS
static void hostapd_acs_channel_selected(struct hostapd_data *hapd,
u8 pri_channel, u8 sec_channel)
{
int channel;
int ret;
if (hapd->iconf->channel) {
wpa_printf(MSG_INFO, "ACS: Channel was already set to %d",
hapd->iconf->channel);
return;
}
hapd->iface->freq = hostapd_hw_get_freq(hapd, pri_channel);
channel = pri_channel;
if (!channel) {
hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211,
HOSTAPD_LEVEL_WARNING,
"driver switched to bad channel");
return;
}
hapd->iconf->channel = channel;
if (sec_channel == 0)
hapd->iconf->secondary_channel = 0;
else if (sec_channel < pri_channel)
hapd->iconf->secondary_channel = -1;
else if (sec_channel > pri_channel)
hapd->iconf->secondary_channel = 1;
else {
wpa_printf(MSG_ERROR, "Invalid secondary channel!");
return;
}
ret = hostapd_acs_completed(hapd->iface, 0);
if (ret) {
wpa_printf(MSG_ERROR,
"ACS: Possibly channel configuration is invalid");
}
}
#endif /* CONFIG_ACS */
int hostapd_probe_req_rx(struct hostapd_data *hapd, const u8 *sa, const u8 *da,
const u8 *bssid, const u8 *ie, size_t ie_len,
int ssi_signal)
@ -1169,6 +1214,13 @@ void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
case EVENT_INTERFACE_DISABLED:
wpa_msg(hapd->msg_ctx, MSG_INFO, INTERFACE_DISABLED);
break;
#ifdef CONFIG_ACS
case EVENT_ACS_CHANNEL_SELECTED:
hostapd_acs_channel_selected(
hapd, data->acs_selected_channels.pri_channel,
data->acs_selected_channels.sec_channel);
break;
#endif /* CONFIG_ACS */
default:
wpa_printf(MSG_DEBUG, "Unknown event %d", event);
break;