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WNM: Accept link removal BSS TM Request

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Instead of rejecting the request, accept it since the AP MLD is in
control of which links are available and we are not being fully
disconnected in this case.

Signed-off-by: Jouni Malinen <j@w1.fi>
This commit is contained in:
Jouni Malinen 2023-12-16 19:45:33 +02:00
parent 80810929a4
commit 09988c4356
2 changed files with 7 additions and 2 deletions
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8
wpa_supplicant/wnm_sta.c
View file

@ -1091,7 +1091,7 @@ static void wnm_send_bss_transition_mgmt_resp(
wpabuf_put_data(buf, "\0\0\0\0\0\0", ETH_ALEN);
}
if (status == WNM_BSS_TM_ACCEPT)
if (status == WNM_BSS_TM_ACCEPT && !wpa_s->wnm_link_removal)
wnm_add_cand_list(wpa_s, &buf);
#ifdef CONFIG_MBO
@ -1458,6 +1458,7 @@ static void ieee802_11_rx_bss_trans_mgmt_req(struct wpa_supplicant *wpa_s,
wpa_s->wnm_dialog_token = pos[0];
wpa_s->wnm_mode = pos[1];
wpa_s->wnm_dissoc_timer = WPA_GET_LE16(pos + 2);
wpa_s->wnm_link_removal = false;
valid_int = pos[4];
wpa_s->wnm_reply = reply;
@ -1531,6 +1532,7 @@ static void ieee802_11_rx_bss_trans_mgmt_req(struct wpa_supplicant *wpa_s,
wpa_printf(MSG_INFO,
"WNM: BTM request for a single MLO link - ignore disassociation imminent since other links remain associated");
disassoc_imminent = false;
wpa_s->wnm_link_removal = true;
}
if (disassoc_imminent) {
@ -1673,7 +1675,9 @@ static void ieee802_11_rx_bss_trans_mgmt_req(struct wpa_supplicant *wpa_s,
wpa_supplicant_req_scan(wpa_s, 0, 0);
} else if (reply) {
enum bss_trans_mgmt_status_code status;
if (wpa_s->wnm_mode & WNM_BSS_TM_REQ_ESS_DISASSOC_IMMINENT)
if ((wpa_s->wnm_mode & WNM_BSS_TM_REQ_ESS_DISASSOC_IMMINENT) ||
wpa_s->wnm_link_removal)
status = WNM_BSS_TM_ACCEPT;
else {
wpa_msg(wpa_s, MSG_INFO, "WNM: BSS Transition Management Request did not include candidates");

1
wpa_supplicant/wpa_supplicant_i.h
View file

@ -1299,6 +1299,7 @@ struct wpa_supplicant {
u8 wnm_reply;
u8 wnm_num_neighbor_report;
u8 wnm_mode;
bool wnm_link_removal;
u16 wnm_dissoc_timer;
u8 wnm_bss_termination_duration[12];
struct neighbor_report *wnm_neighbor_report_elements;