2024-02-13 21:26:31 +00:00
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From: Felix Fietkau <nbd@nbd.name>
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Date: Tue, 25 May 2021 10:50:16 +0200
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Subject: [PATCH] fix adding back stations after a missed deauth/disassoc
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2021-05-25 08:50:16 +00:00
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--- a/src/ap/ieee802_11.c
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+++ b/src/ap/ieee802_11.c
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2024-09-07 17:54:34 +00:00
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@@ -4784,6 +4784,13 @@ static int add_associated_sta(struct hos
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2021-05-25 08:50:16 +00:00
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* drivers to accept the STA parameter configuration. Since this is
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* after a new FT-over-DS exchange, a new TK has been derived, so key
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* reinstallation is not a concern for this case.
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+ *
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+ * If the STA was associated and authorized earlier, but came for a new
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+ * connection (!added_unassoc + !reassoc), remove the existing STA entry
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+ * so that it can be re-added. This case is rarely seen when the AP could
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+ * not receive the deauth/disassoc frame from the STA. And the STA comes
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+ * back with new connection within a short period or before the inactive
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+ * STA entry is removed from the list.
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*/
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wpa_printf(MSG_DEBUG, "Add associated STA " MACSTR
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" (added_unassoc=%d auth_alg=%u ft_over_ds=%u reassoc=%d authorized=%d ft_tk=%d fils_tk=%d)",
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2024-09-07 17:54:34 +00:00
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@@ -4797,7 +4804,8 @@ static int add_associated_sta(struct hos
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2021-05-25 08:50:16 +00:00
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(!(sta->flags & WLAN_STA_AUTHORIZED) ||
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(reassoc && sta->ft_over_ds && sta->auth_alg == WLAN_AUTH_FT) ||
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(!wpa_auth_sta_ft_tk_already_set(sta->wpa_sm) &&
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- !wpa_auth_sta_fils_tk_already_set(sta->wpa_sm)))) {
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+ !wpa_auth_sta_fils_tk_already_set(sta->wpa_sm)) ||
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+ (!reassoc && (sta->flags & WLAN_STA_AUTHORIZED)))) {
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hostapd_drv_sta_remove(hapd, sta->addr);
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wpa_auth_sm_event(sta->wpa_sm, WPA_DRV_STA_REMOVED);
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set = 0;
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