mac80211: out of date seq number cause network stall

[孙建希 <ycsunjane@xxxxxxxxx>]

Hi,

I first find this bug in wds ath9k mode.

When use iperf3, so many out of date seq number, in mac80211 function
ieee80211_sta_manage_reorder_buf:

[ 1248.968407] mac80211 with out of date seq number: 2551 2547 2552
[ 1248.972972] mac80211 with out of date seq number: 2551 2548 2552
[ 1248.978800] mac80211 with out of date seq number: 2551 2549 2552
[ 1248.984760] mac80211 with out of date seq number: 2551 2550 2552
[ 1248.990636] mac80211 with out of date seq number: 2551 2551 2552


`previous seq number` `current seq number` `head seq num`.


when `head seq number` - `current seq num` > 200 . Iperf3 will block.