diff options
| -rw-r--r-- | net/mac80211/iface.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c index 30589b4c09da..3a15ef8dd322 100644 --- a/net/mac80211/iface.c +++ b/net/mac80211/iface.c @@ -2000,9 +2000,16 @@ int ieee80211_if_add(struct ieee80211_local *local, const char *name, netdev_set_default_ethtool_ops(ndev, &ieee80211_ethtool_ops); - /* MTU range: 256 - 2304 */ + /* MTU range is normally 256 - 2304, where the upper limit is + * the maximum MSDU size. Monitor interfaces send and receive + * MPDU and A-MSDU frames which may be much larger so we do + * not impose an upper limit in that case. + */ ndev->min_mtu = 256; - ndev->max_mtu = local->hw.max_mtu; + if (type == NL80211_IFTYPE_MONITOR) + ndev->max_mtu = 0; + else + ndev->max_mtu = local->hw.max_mtu; ret = register_netdevice(ndev); if (ret) { |