[PATCH v3 3/5] SME: Add support for handling association with MLD

[Andrei Otcheretianski]

In case that the AP supports MLD, request an MLD association
from the driver.

When processing the association event from the driver verify
that the multi link information in the association response ML
element matches the links on which the association was expected.

Signed-off-by: Ilan Peer <ilan.peer at intel.com>
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski at intel.com>
---
 wpa_supplicant/sme.c | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/wpa_supplicant/sme.c b/wpa_supplicant/sme.c
index a44044079e..2cc05f21c9 100644
--- a/wpa_supplicant/sme.c
+++ b/wpa_supplicant/sme.c
@@ -2420,6 +2420,31 @@ mscs_fail:
 	else
 		params.uapsd = -1;
 
+	if (wpa_s->valid_links) {
+		size_t i;
+
+		wpa_printf(MSG_DEBUG,
+			   "MLD: in association. assoc_link_id=%u, valid_links=0x%x",
+			   wpa_s->mlo_assoc_link_id, wpa_s->valid_links);
+
+		params.mld_params.mld_addr = wpa_s->ap_mld_addr;
+		params.mld_params.valid_links = wpa_s->valid_links;
+		params.mld_params.assoc_link_id = wpa_s->mlo_assoc_link_id;
+		for (i = 0; i < MAX_NUM_MLD_LINKS ; i++) {
+			if (!(wpa_s->valid_links & BIT(i)))
+				continue;
+
+			params.mld_params.mld_links[i].bssid =
+				wpa_s->links[i].bssid;
+			params.mld_params.mld_links[i].freq =
+				wpa_s->links[i].freq;
+
+			wpa_printf(MSG_DEBUG, "MLD: id=%zu, freq=%d, " MACSTR,
+				   i, wpa_s->links[i].freq,
+				   MAC2STR(wpa_s->links[i].bssid));
+		}
+	}
+
 	if (wpa_drv_associate(wpa_s, &params) < 0) {
 		wpa_msg(wpa_s, MSG_INFO, "SME: Association request to the "
 			"driver failed");
-- 
2.25.1