wifi: nl80211: use link ID in NL80211_CMD_SET_BSS

We clearly need the link ID here, to know the right BSS
to configure. Use/require it.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

include/net/cfg80211.h

@@ -2105,6 +2105,7 @@ struct mpath_info {
  *
  * Used to change BSS parameters (mainly for AP mode).
  *
+ * @link_id: link_id or -1 for non-MLD
  * @use_cts_prot: Whether to use CTS protection
  *	(0 = no, 1 = yes, -1 = do not change)
  * @use_short_preamble: Whether the use of short preambles is allowed
@@ -2122,6 +2123,7 @@ struct mpath_info {
  * @p2p_opp_ps: P2P opportunistic PS (-1 = no change)
  */
 struct bss_parameters {
+	int link_id;
 	int use_cts_prot;
 	int use_short_preamble;
 	int use_short_slot_time;

net/wireless/nl80211.c

@@ -7780,6 +7780,7 @@ static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
 	int err;
 
 	memset(&params, 0, sizeof(params));
+	params.link_id = nl80211_link_id_or_invalid(info->attrs);
 	/* default to not changing parameters */
 	params.use_cts_prot = -1;
 	params.use_short_preamble = -1;
@@ -16564,7 +16565,8 @@ static const struct genl_small_ops nl80211_small_ops[] = {
 		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
 		.doit = nl80211_set_bss,
 		.flags = GENL_UNS_ADMIN_PERM,
-		.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
+		.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
+					 NL80211_FLAG_MLO_VALID_LINK_ID),
 	},
 	{
 		.cmd = NL80211_CMD_GET_REG,