mac80211: fix maximum MTU
The maximum MTU shouldn't take the headers into account,
the maximum MSDU size is exactly the maximum MTU.
Signed-off-by: T Krishna Chaitanya <chaitanyatk@posedge.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index 0f2a9f9..8be854e 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -207,17 +207,8 @@
static int ieee80211_change_mtu(struct net_device *dev, int new_mtu)
{
- int meshhdrlen;
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
-
- meshhdrlen = (sdata->vif.type == NL80211_IFTYPE_MESH_POINT) ? 5 : 0;
-
- /* FIX: what would be proper limits for MTU?
- * This interface uses 802.3 frames. */
- if (new_mtu < 256 ||
- new_mtu > IEEE80211_MAX_DATA_LEN - 24 - 6 - meshhdrlen) {
+ if (new_mtu < 256 || new_mtu > IEEE80211_MAX_DATA_LEN)
return -EINVAL;
- }
dev->mtu = new_mtu;
return 0;