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Update STA flags to the driver immediately on disconnection

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hostapd (and wpa_supplicant in AP mode) was internally updating the STA
flags on disconnection cases to remove authorization and association.
However, some cases did not result in immediate update of the driver STA
entry. Update all such cases to send out the update to the driver as
well to reduce risk of race conditions where new frames might be
accepted for TX or RX after the port authorization or association has
been lost and configured keys are removed.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This commit is contained in:
Jouni Malinen 2020-03-18 12:41:46 +02:00 committed by Jouni Malinen
parent b766ac488f
commit b7275a8142
4 changed files with 10 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
src/ap/ap_drv_ops.c
View File

@ -588,7 +588,7 @@ int hostapd_set_frag(struct hostapd_data *hapd, int frag)
int hostapd_sta_set_flags(struct hostapd_data *hapd, u8 *addr,
int total_flags, int flags_or, int flags_and)
{
if (hapd->driver == NULL || hapd->driver->sta_set_flags == NULL)
if (!hapd->driver || !hapd->drv_priv || !hapd->driver->sta_set_flags)
return 0;
return hapd->driver->sta_set_flags(hapd->drv_priv, addr, total_flags,
flags_or, flags_and);

1
src/ap/drv_callbacks.c
View File

@ -712,6 +712,7 @@ void hostapd_notif_disassoc(struct hostapd_data *hapd, const u8 *addr)
ap_sta_set_authorized(hapd, sta, 0);
sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
hostapd_set_sta_flags(hapd, sta);
wpa_auth_sm_event(sta->wpa_sm, WPA_DISASSOC);
sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);

2
src/ap/ieee802_11.c
View File

@ -4502,6 +4502,7 @@ static void handle_disassoc(struct hostapd_data *hapd,
ap_sta_set_authorized(hapd, sta, 0);
sta->last_seq_ctrl = WLAN_INVALID_MGMT_SEQ;
sta->flags &= ~(WLAN_STA_ASSOC | WLAN_STA_ASSOC_REQ_OK);
hostapd_set_sta_flags(hapd, sta);
wpa_auth_sm_event(sta->wpa_sm, WPA_DISASSOC);
hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
HOSTAPD_LEVEL_INFO, "disassociated");
@ -4568,6 +4569,7 @@ static void handle_deauth(struct hostapd_data *hapd,
sta->last_seq_ctrl = WLAN_INVALID_MGMT_SEQ;
sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC |
WLAN_STA_ASSOC_REQ_OK);
hostapd_set_sta_flags(hapd, sta);
wpa_auth_sm_event(sta->wpa_sm, WPA_DEAUTH);
hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
HOSTAPD_LEVEL_DEBUG, "deauthenticated");

7
src/ap/sta_info.c
View File

@ -164,6 +164,7 @@ void ap_free_sta(struct hostapd_data *hapd, struct sta_info *sta)
/* just in case */
ap_sta_set_authorized(hapd, sta, 0);
hostapd_set_sta_flags(hapd, sta);
if (sta->flags & (WLAN_STA_WDS | WLAN_STA_MULTI_AP))
hostapd_set_wds_sta(hapd, NULL, sta->addr, sta->aid, 0);
@ -544,6 +545,7 @@ skip_poll:
case STA_DISASSOC_FROM_CLI:
ap_sta_set_authorized(hapd, sta, 0);
sta->flags &= ~WLAN_STA_ASSOC;
hostapd_set_sta_flags(hapd, sta);
ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
if (!sta->acct_terminate_cause)
sta->acct_terminate_cause =
@ -812,6 +814,7 @@ void ap_sta_disassociate(struct hostapd_data *hapd, struct sta_info *sta,
sta->timeout_next = STA_DEAUTH;
}
ap_sta_set_authorized(hapd, sta, 0);
hostapd_set_sta_flags(hapd, sta);
wpa_printf(MSG_DEBUG, "%s: reschedule ap_handle_timer timeout "
"for " MACSTR " (%d seconds - "
"AP_MAX_INACTIVITY_AFTER_DISASSOC)",
@ -862,6 +865,7 @@ void ap_sta_deauthenticate(struct hostapd_data *hapd, struct sta_info *sta,
sta->last_seq_ctrl = WLAN_INVALID_MGMT_SEQ;
sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC | WLAN_STA_ASSOC_REQ_OK);
ap_sta_set_authorized(hapd, sta, 0);
hostapd_set_sta_flags(hapd, sta);
sta->timeout_next = STA_REMOVE;
wpa_printf(MSG_DEBUG, "%s: reschedule ap_handle_timer timeout "
"for " MACSTR " (%d seconds - "
@ -1329,9 +1333,10 @@ void ap_sta_disconnect(struct hostapd_data *hapd, struct sta_info *sta,
if (sta == NULL)
return;
ap_sta_set_authorized(hapd, sta, 0);
sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
hostapd_set_sta_flags(hapd, sta);
wpa_auth_sm_event(sta->wpa_sm, WPA_DEAUTH);
ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
wpa_printf(MSG_DEBUG, "%s: %s: reschedule ap_handle_timer timeout "
"for " MACSTR " (%d seconds - "
"AP_MAX_INACTIVITY_AFTER_DEAUTH)",