From: Johannes Berg <johannes.berg@xxxxxxxxx>
We haven't tried this yet, and it's not very likely to
work well right now, so for now disable 4-addr use on
interfaces that are MLDs.
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
---
net/mac80211/cfg.c | 7 +++++++
net/mac80211/mlme.c | 4 ++++
2 files changed, 11 insertions(+)
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index b5522edbe05d..687b4c878d4a 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -226,6 +226,10 @@ static int ieee80211_change_iface(struct wiphy *wiphy,
if (params->use_4addr == ifmgd->use_4addr)
return 0;
+ /* FIXME: no support for 4-addr MLO yet */
+ if (sdata->vif.valid_links)
+ return -EOPNOTSUPP;
+
sdata->u.mgd.use_4addr = params->use_4addr;
if (!ifmgd->associated)
return 0;
@@ -4697,6 +4701,9 @@ static int ieee80211_add_intf_link(struct wiphy *wiphy,
{
struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
+ if (wdev->use_4addr)
+ return -EOPNOTSUPP;
+
return ieee80211_vif_set_links(sdata, wdev->valid_links);
}
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 8a2237106002..ff449e0c2e62 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -6903,6 +6903,10 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
for (i = 0; i < IEEE80211_MLD_MAX_NUM_LINKS; i++)
size += req->links[i].elems_len;
+ /* FIXME: no support for 4-addr MLO yet */
+ if (sdata->u.mgd.use_4addr && req->link_id >= 0)
+ return -EOPNOTSUPP;
+
assoc_data = kzalloc(size, GFP_KERNEL);
if (!assoc_data)
return -ENOMEM;
--
2.37.2
