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hostapd: Add support for OWE offload for STA/AP interface

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The driver advertising OWE offload support would take care of
Diffie-Hellman Parameter element generation and processing part. The
driver would be responsible for OWE PMK generation in this case.

Avoid the Diffie-Hellman Parameter element handling in
wpa_supplicant/hostapd for drivers advertising OWE offload support. This
change is applicable only for drivers supporting 4-way handshake
offload.

Signed-off-by: Vinayak Yadawad <vinayak.yadawad@broadcom.com>
This commit is contained in:
Vinayak Yadawad 2023-11-09 10:32:23 +05:30 committed by Jouni Malinen
parent da364180fb
commit d984c7b298
5 changed files with 19 additions and 1 deletions
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4
src/ap/drv_callbacks.c
View file

@ -260,6 +260,9 @@ int hostapd_notif_assoc(struct hostapd_data *hapd, const u8 *addr,
u16 reason = WLAN_REASON_UNSPECIFIED;
int status = WLAN_STATUS_SUCCESS;
const u8 *p2p_dev_addr = NULL;
#ifdef CONFIG_OWE
struct hostapd_iface *iface = hapd->iface;
#endif /* CONFIG_OWE */
if (addr == NULL) {
/*
@ -772,6 +775,7 @@ skip_wpa_check:
#ifdef CONFIG_OWE
if ((hapd->conf->wpa_key_mgmt & WPA_KEY_MGMT_OWE) &&
!(iface->drv_flags & WPA_DRIVER_FLAGS2_OWE_OFFLOAD_AP) &&
wpa_auth_sta_key_mgmt(sta->wpa_sm) == WPA_KEY_MGMT_OWE &&
elems.owe_dh) {
u8 *npos;

4
src/drivers/driver.h
View file

@ -2296,6 +2296,10 @@ struct wpa_driver_capa {
#define WPA_DRIVER_FLAGS2_SAE_OFFLOAD_STA 0x0000000000010000ULL
/** Driver support AP_PSK authentication offload */
#define WPA_DRIVER_FLAGS2_4WAY_HANDSHAKE_AP_PSK 0x0000000000020000ULL
/** Driver supports OWE STA offload */
#define WPA_DRIVER_FLAGS2_OWE_OFFLOAD_STA 0x0000000000040000ULL
/** Driver supports OWE AP offload */
#define WPA_DRIVER_FLAGS2_OWE_OFFLOAD_AP 0x0000000000080000ULL
u64 flags2;
#define FULL_AP_CLIENT_STATE_SUPP(drv_flags) \

8
src/drivers/driver_nl80211_capa.c
View file

@ -709,6 +709,14 @@ static void wiphy_info_ext_feature_flags(struct wiphy_info_data *info,
if (ext_feature_isset(ext_features, len,
NL80211_EXT_FEATURE_4WAY_HANDSHAKE_AP_PSK))
capa->flags2 |= WPA_DRIVER_FLAGS2_4WAY_HANDSHAKE_AP_PSK;
if (ext_feature_isset(ext_features, len,
NL80211_EXT_FEATURE_OWE_OFFLOAD))
capa->flags2 |= WPA_DRIVER_FLAGS2_OWE_OFFLOAD_STA;
if (ext_feature_isset(ext_features, len,
NL80211_EXT_FEATURE_OWE_OFFLOAD_AP))
capa->flags2 |= WPA_DRIVER_FLAGS2_OWE_OFFLOAD_AP;
}

1
wpa_supplicant/events.c
View file

@ -3376,6 +3376,7 @@ static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
#ifdef CONFIG_OWE
if (wpa_s->key_mgmt == WPA_KEY_MGMT_OWE &&
!(wpa_s->drv_flags & WPA_DRIVER_FLAGS2_OWE_OFFLOAD_STA) &&
(!bssid_known ||
owe_process_assoc_resp(wpa_s->wpa,
wpa_s->valid_links ?

3
wpa_supplicant/wpa_supplicant.c
View file

@ -3616,7 +3616,8 @@ static u8 * wpas_populate_assoc_ies(
} else
#endif /* CONFIG_TESTING_OPTIONS */
if (algs == WPA_AUTH_ALG_OPEN &&
ssid->key_mgmt == WPA_KEY_MGMT_OWE) {
ssid->key_mgmt == WPA_KEY_MGMT_OWE &&
!(wpa_s->drv_flags & WPA_DRIVER_FLAGS2_OWE_OFFLOAD_STA)) {
struct wpabuf *owe_ie;
u16 group;