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Check for FT support when selecting FT suites

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A driver supports FT if it either supports SME or the
NL80211_CMD_UPDATE_FT_IES command. When selecting AKM suites,
wpa_supplicant currently doesn't take into account whether or not either
of those conditions are met. This can cause association failures, e.g.,
when an AP supports both WPA-EAP and FT-EAP but the driver doesn't
support FT (wpa_supplicant will decide to do FT-EAP since it is unaware
the driver doesn't support it). This change allows an FT suite to be
selected only when the driver also supports FT.

Signed-off-by: Matthew Wang <matthewmwang@chromium.org>
Reviewed-by: Brian Norris <briannorris@chromium.org>
This commit is contained in:
Matthew Wang 2020-02-03 17:12:05 -08:00 • committed by Jouni Malinen
parent 85f3ab758e
commit 23dc196fde
3 changed files with 14 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

2
src/drivers/driver.h
View file

@ -1823,6 +1823,8 @@ struct wpa_driver_capa {
#define WPA_DRIVER_FLAGS_CONTROL_PORT 0x0400000000000000ULL
/** Driver supports VLAN offload */
#define WPA_DRIVER_FLAGS_VLAN_OFFLOAD 0x0800000000000000ULL
/** Driver supports UPDATE_FT_IES command */
#define WPA_DRIVER_FLAGS_UPDATE_FT_IES 0x1000000000000000ULL
u64 flags;
#define FULL_AP_CLIENT_STATE_SUPP(drv_flags) \

7
src/drivers/driver_nl80211_capa.c
View file

@ -78,6 +78,7 @@ struct wiphy_info_data {
unsigned int wmm_ac_supported:1;
unsigned int mac_addr_rand_scan_supported:1;
unsigned int mac_addr_rand_sched_scan_supported:1;
unsigned int update_ft_ies_supported:1;
};
@ -243,6 +244,9 @@ static void wiphy_info_supp_cmds(struct wiphy_info_data *info,
case NL80211_CMD_SET_QOS_MAP:
info->set_qos_map_supported = 1;
break;
case NL80211_CMD_UPDATE_FT_IES:
info->update_ft_ies_supported = 1;
break;
}
}
}
@ -912,6 +916,9 @@ static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
drv->capa.max_sched_scan_plan_iterations = 0;
}
if (info->update_ft_ies_supported)
drv->capa.flags |= WPA_DRIVER_FLAGS_UPDATE_FT_IES;
return 0;
}