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MBO: Parse MBO ANQP-element on STA 

This extends the GAS/ANQP parser in wpa_supplicant to process MBO
ANQP-elements and indicate received Cellular Data Connection Preference
values over the control interface.

When a valid MBO ANQP-element is received, the following control
interface message is sent:

RX-MBO-ANQP <BSSID> cell_conn_pref=<value>

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This commit is contained in:
Jouni Malinen 2017-03-10 18:57:12 +02:00 committed by Jouni Malinen
parent 941caed980
commit 34f2851902
4 changed files with 41 additions and 3 deletions
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1
src/common/wpa_ctrl.h
View File

@ -234,6 +234,7 @@ extern "C" {
#define RX_HS20_ANQP "RX-HS20-ANQP "
#define RX_HS20_ANQP_ICON "RX-HS20-ANQP-ICON "
#define RX_HS20_ICON "RX-HS20-ICON "
#define RX_MBO_ANQP "RX-MBO-ANQP "
#define HS20_SUBSCRIPTION_REMEDIATION "HS20-SUBSCRIPTION-REMEDIATION "
#define HS20_DEAUTH_IMMINENT_NOTICE "HS20-DEAUTH-IMMINENT-NOTICE "

12
wpa_supplicant/interworking.c
View File

@ -2912,7 +2912,6 @@ static void interworking_parse_rx_anqp_resp(struct wpa_supplicant *wpa_s,
return;
switch (WPA_GET_BE24(pos)) {
#ifdef CONFIG_HS20
case OUI_WFA:
pos += 3;
slen -= 3;
@ -2923,19 +2922,26 @@ static void interworking_parse_rx_anqp_resp(struct wpa_supplicant *wpa_s,
slen--;
switch (type) {
#ifdef CONFIG_HS20
case HS20_ANQP_OUI_TYPE:
hs20_parse_rx_hs20_anqp_resp(wpa_s, bss, sa,
pos, slen,
dialog_token);
break;
#endif /* CONFIG_HS20 */
#ifdef CONFIG_MBO
case MBO_ANQP_OUI_TYPE:
mbo_parse_rx_anqp_resp(wpa_s, bss, sa,
pos, slen);
break;
#endif /* CONFIG_MBO */
default:
wpa_msg(wpa_s, MSG_DEBUG,
"HS20: Unsupported ANQP vendor type %u",
"ANQP: Unsupported ANQP vendor type %u",
type);
break;
}
break;
#endif /* CONFIG_HS20 */
default:
wpa_msg(wpa_s, MSG_DEBUG,
"Interworking: Unsupported vendor-specific ANQP OUI %06x",

28
wpa_supplicant/mbo.c
View File

@ -549,3 +549,31 @@ struct wpabuf * mbo_build_anqp_buf(struct wpa_supplicant *wpa_s,
return anqp_buf;
}
void mbo_parse_rx_anqp_resp(struct wpa_supplicant *wpa_s,
struct wpa_bss *bss, const u8 *sa,
const u8 *data, size_t slen)
{
const u8 *pos = data;
u8 subtype;
if (slen < 1)
return;
subtype = *pos++;
slen--;
switch (subtype) {
case MBO_ANQP_SUBTYPE_CELL_CONN_PREF:
if (slen < 1)
break;
wpa_msg(wpa_s, MSG_INFO, RX_MBO_ANQP MACSTR
" cell_conn_pref=%u", MAC2STR(sa), *pos);
break;
default:
wpa_printf(MSG_DEBUG, "MBO: Unsupported ANQP subtype %u",
subtype);
break;
}
}

3
wpa_supplicant/wpa_supplicant_i.h
View File

@ -1295,6 +1295,9 @@ size_t wpas_mbo_ie_bss_trans_reject(struct wpa_supplicant *wpa_s, u8 *pos,
void wpas_mbo_update_cell_capa(struct wpa_supplicant *wpa_s, u8 mbo_cell_capa);
struct wpabuf * mbo_build_anqp_buf(struct wpa_supplicant *wpa_s,
struct wpa_bss *bss, u32 mbo_subtypes);
void mbo_parse_rx_anqp_resp(struct wpa_supplicant *wpa_s,
struct wpa_bss *bss, const u8 *sa,
const u8 *data, size_t slen);
/* op_classes.c */
enum chan_allowed {