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MLD: Use BSS Parameters in TBTT Info to check SSID match

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Use the Same SSID and Colocated AP bits as an alternative way of finding
a match on the current SSID.

Signed-off-by: Ben Greear <greearb@candelatech.com>
This commit is contained in:
Ben Greear 2023-10-28 16:24:35 -07:00 committed by Jouni Malinen
parent 0635f83e48
commit a3020f852e
1 changed files with 8 additions and 3 deletions
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11
wpa_supplicant/sme.c
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@ -382,6 +382,7 @@ static void wpas_process_tbtt_info(struct wpa_supplicant *wpa_s, const u8 *data)
{ {
struct wpa_bss *neigh_bss; struct wpa_bss *neigh_bss;
const u8 *bssid; const u8 *bssid;
u8 bss_params;
u8 link_id; u8 link_id;
/* TBTT Information field /* TBTT Information field
@ -398,12 +399,14 @@ static void wpas_process_tbtt_info(struct wpa_supplicant *wpa_s, const u8 *data)
* B21: Disabled Link Indication */ * B21: Disabled Link Indication */
bssid = data + 1; bssid = data + 1;
bss_params = data[1 + ETH_ALEN + 4];
data += 13; /* MLD Parameters */ data += 13; /* MLD Parameters */
link_id = *(data + 1) & 0xF; link_id = *(data + 1) & 0xF;
wpa_printf(MSG_DEBUG, "MLD: mld ID=%u, link ID=%u", wpa_dbg(wpa_s, MSG_DEBUG,
*data, link_id); "MLD: mld ID=%u, link ID=%u, bssid=" MACSTR ", bss_params=0x%x",
*data, link_id, MAC2STR(bssid), bss_params);
if (*data) { if (*data) {
wpa_printf(MSG_DEBUG, "MLD: Reported link not part of MLD"); wpa_printf(MSG_DEBUG, "MLD: Reported link not part of MLD");
@ -416,7 +419,9 @@ static void wpas_process_tbtt_info(struct wpa_supplicant *wpa_s, const u8 *data)
return; return;
} }
if (!wpa_scan_res_match(wpa_s, 0, neigh_bss, wpa_s->current_ssid, if (!((bss_params & RNR_BSS_PARAM_SAME_SSID) &&
(bss_params & RNR_BSS_PARAM_CO_LOCATED)) &&
!wpa_scan_res_match(wpa_s, 0, neigh_bss, wpa_s->current_ssid,
1, 0)) { 1, 0)) {
wpa_printf(MSG_DEBUG, wpa_printf(MSG_DEBUG,
"MLD: Neighbor doesn't match current SSID - skip link"); "MLD: Neighbor doesn't match current SSID - skip link");