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mac80211: fix Rx reordering with RX_FLAG_AMSDU_MORE

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Some drivers (e.g. ath10k) report A-MSDU subframes
individually with identical seqno. The A-MPDU Rx
reorder code did not account for that which made
it practically unusable with drivers using
RX_FLAG_AMSDU_MORE because it would end up
dropping a lot of frames resulting in confusion in
upper network transport layers.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Michal Kazior
2014-07-16 12:09:31 +02:00
committed by Johannes Berg
parent 60e83deb4c
commit 83eb935ec7
4 changed files with 62 additions and 24 deletions
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5
net/mac80211/sta_info.h
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@@ -155,7 +155,8 @@ struct tid_ampdu_tx {
/**
* struct tid_ampdu_rx - TID aggregation information (Rx).
*
* @reorder_buf: buffer to reorder incoming aggregated MPDUs
* @reorder_buf: buffer to reorder incoming aggregated MPDUs. An MPDU may be an
* A-MSDU with individually reported subframes.
* @reorder_time: jiffies when skb was added
* @session_timer: check if peer keeps Tx-ing on the TID (by timeout value)
* @reorder_timer: releases expired frames from the reorder buffer.
@@ -180,7 +181,7 @@ struct tid_ampdu_tx {
struct tid_ampdu_rx {
struct rcu_head rcu_head;
spinlock_t reorder_lock;
struct sk_buff **reorder_buf;
struct sk_buff_head *reorder_buf;
unsigned long *reorder_time;
struct timer_list session_timer;
struct timer_list reorder_timer;