MLD STA: Fix destination address for EAPOL frames

For MLO association, specify the destination address as the AP MLD MAC
address for sending EAPOL frames. Previously, this was set to the BSSID
in all cases (and hoped for the driver to map it to MLD MAC address when
needed).

Signed-off-by: Veerendranath Jakkam <quic_vjakkam@quicinc.com>

diff --git a/wpa_supplicant/wpas_glue.c b/wpa_supplicant/wpas_glue.c
index 30e4876eefb0ee3cb66b7fbac4b41e7b7d2021fe..e776d5f92a9335947ec2d7d7170b576b739d49da 100644 (file)
--- a/wpa_supplicant/wpas_glue.c
+++ b/wpa_supplicant/wpas_glue.c
@@ -148,6 +148,7 @@ static int wpa_supplicant_eapol_send(void *ctx, int type, const u8 *buf,
 {
        struct wpa_supplicant *wpa_s = ctx;
        u8 *msg, *dst, bssid[ETH_ALEN];
+       struct driver_sta_mlo_info drv_mlo;
        size_t msglen;
        int res;
 
@@ -197,11 +198,16 @@ static int wpa_supplicant_eapol_send(void *ctx, int type, const u8 *buf,
        if (is_zero_ether_addr(wpa_s->bssid)) {
                wpa_printf(MSG_DEBUG, "BSSID not set when trying to send an "
                           "EAPOL frame");
+               os_memset(&drv_mlo, 0, sizeof(drv_mlo));
                if (wpa_drv_get_bssid(wpa_s, bssid) == 0 &&
+                   (!wpa_s->valid_links ||
+                    wpas_drv_get_sta_mlo_info(wpa_s, &drv_mlo) == 0) &&
                    !is_zero_ether_addr(bssid)) {
-                       dst = bssid;
-                       wpa_printf(MSG_DEBUG, "Using current BSSID " MACSTR
+                       dst = drv_mlo.valid_links ? drv_mlo.ap_mld_addr : bssid;
+                       wpa_printf(MSG_DEBUG, "Using current %s " MACSTR
                                   " from the driver as the EAPOL destination",
+                                  drv_mlo.valid_links ? "AP MLD MAC address" :
+                                  "BSSID",
                                   MAC2STR(dst));
                } else {
                        dst = wpa_s->last_eapol_src;
@@ -211,9 +217,10 @@ static int wpa_supplicant_eapol_send(void *ctx, int type, const u8 *buf,
                                   MAC2STR(dst));
                }
        } else {
-               /* BSSID was already set (from (Re)Assoc event, so use it as
-                * the EAPOL destination. */
-               dst = wpa_s->bssid;
+               /* BSSID was already set (from (Re)Assoc event, so use BSSID or
+                * AP MLD MAC address (in the case of MLO connection) as the
+                * EAPOL destination. */
+               dst = wpa_s->valid_links ? wpa_s->ap_mld_addr : wpa_s->bssid;
        }
 
        msg = wpa_alloc_eapol(wpa_s, type, buf, len, &msglen, NULL);