diff options
| author | Nishant Sarmukadam <nishants@marvell.com> | 2011-03-17 11:58:49 -0700 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2011-03-30 14:15:14 -0400 |
| commit | a0e7c6cfe2a04af450274638845802b5c384e8df (patch) | |
| tree | 58a5fba2a2f9f3f114fd20898b0818b7005a625a | |
| parent | 170335432ad36584a6d24fc1fd903024d221ef55 (diff) | |
mwl8k: Queue ADDBA requests in respective data queues
Queue ADDBA requests in respective data queues to avoid ADDBA
requests and the the related data packets (to the same ra/tid)
queued in the hardware to be sent out asynchronously.
Signed-off-by: Nishant Sarmukadam <nishants@marvell.com>
Signed-off-by: Brian Cavagnolo <brian@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
| -rw-r--r-- | drivers/net/wireless/mwl8k.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/drivers/net/wireless/mwl8k.c b/drivers/net/wireless/mwl8k.c index 5473f4ca0ca0..ae56d2f32b2e 100644 --- a/drivers/net/wireless/mwl8k.c +++ b/drivers/net/wireless/mwl8k.c @@ -1518,6 +1518,33 @@ static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw) MWL8K_TXD_STATUS_OK_RETRY | \ MWL8K_TXD_STATUS_OK_MORE_RETRY)) +static int mwl8k_tid_queue_mapping(u8 tid) +{ + BUG_ON(tid > 7); + + switch (tid) { + case 0: + case 3: + return IEEE80211_AC_BE; + break; + case 1: + case 2: + return IEEE80211_AC_BK; + break; + case 4: + case 5: + return IEEE80211_AC_VI; + break; + case 6: + case 7: + return IEEE80211_AC_VO; + break; + default: + return -1; + break; + } +} + /* The firmware will fill in the rate information * for each packet that gets queued in the hardware * in this structure @@ -1745,6 +1772,7 @@ mwl8k_txq_xmit(struct ieee80211_hw *hw, int index, struct sk_buff *skb) u8 tid = 0; struct mwl8k_ampdu_stream *stream = NULL; bool start_ba_session = false; + struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data; wh = (struct ieee80211_hdr *)skb->data; if (ieee80211_is_data_qos(wh->frame_control)) @@ -1788,6 +1816,24 @@ mwl8k_txq_xmit(struct ieee80211_hw *hw, int index, struct sk_buff *skb) qos |= MWL8K_QOS_ACK_POLICY_NORMAL; } + /* Queue ADDBA request in the respective data queue. While setting up + * the ampdu stream, mac80211 queues further packets for that + * particular ra/tid pair. However, packets piled up in the hardware + * for that ra/tid pair will still go out. ADDBA request and the + * related data packets going out from different queues asynchronously + * will cause a shift in the receiver window which might result in + * ampdu packets getting dropped at the receiver after the stream has + * been setup. + */ + if (unlikely(ieee80211_is_action(wh->frame_control) && + mgmt->u.action.category == WLAN_CATEGORY_BACK && + mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ && + priv->ap_fw)) { + u16 capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab); + tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2; + index = mwl8k_tid_queue_mapping(tid); + } + txpriority = index; if (ieee80211_is_data_qos(wh->frame_control) && |