From: Jouni Malinen <j@w1.fi>
Date: Sun, 17 Dec 2023 19:53:52 +0000 (+0200)
Subject: AP MLD: Skip unknown Multi-Link element subelements
X-Git-Tag: hostap_2_11~630
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=38a5ed5fda5826abf5fe53aaac2636f4841404af;p=thirdparty%2Fhostap.git

AP MLD: Skip unknown Multi-Link element subelements

Instead of rejecting the Multi-Link element, skip unknown subelements to
be less likely to cause interop issues for future. IEEE P802.11be/D5.0
allows other optional subelements to be included here.

Signed-off-by: Jouni Malinen <j@w1.fi>
---

diff --git a/src/ap/ieee802_11_eht.c b/src/ap/ieee802_11_eht.c
index 630baa4e8..709151f14 100644
--- a/src/ap/ieee802_11_eht.c
+++ b/src/ap/ieee802_11_eht.c
@@ -1269,9 +1269,11 @@ u16 hostapd_process_ml_assoc_req(struct hostapd_data *hapd,
 
 		if (*pos != MULTI_LINK_SUB_ELEM_ID_PER_STA_PROFILE) {
 			wpa_printf(MSG_DEBUG,
-				   "MLD: Unexpected Multi-Link element subelement ID=%u",
+				   "MLD: Skip unknown Multi-Link element subelement ID=%u",
 				   *pos);
-			goto out;
+			pos += 2 + sub_elem_len;
+			ml_len -= 2 + sub_elem_len;
+			continue;
 		}
 
 		/* Skip the subelement ID and the length */