From d219b7eb379235531af86d4f87ab298c878d54f1 Mon Sep 17 00:00:00 2001 From: Chunfan Chen Date: Wed, 10 Jun 2015 06:19:48 -0700 Subject: mwifiex: handle BT coex event to adjust Rx BA window size If timeshare coexistance between bluetooth and WLAN gets enabled, firmware will give host an event to reduce Rx AMPDU BA window size. The event is handled in this patch. Signed-off-by: Chunfan Chen Signed-off-by: Cathy Luo Signed-off-by: Amitkumar Karwar Signed-off-by: Kalle Valo --- drivers/net/wireless/mwifiex/11n.c | 93 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 93 insertions(+) (limited to 'drivers/net/wireless/mwifiex/11n.c') diff --git a/drivers/net/wireless/mwifiex/11n.c b/drivers/net/wireless/mwifiex/11n.c index 4d8ef492a51b..c174e79e6df2 100644 --- a/drivers/net/wireless/mwifiex/11n.c +++ b/drivers/net/wireless/mwifiex/11n.c @@ -647,6 +647,30 @@ int mwifiex_send_delba(struct mwifiex_private *priv, int tid, u8 *peer_mac, return ret; } +/* + * This function sends delba to specific tid + */ +void mwifiex_11n_delba(struct mwifiex_private *priv, int tid) +{ + struct mwifiex_rx_reorder_tbl *rx_reor_tbl_ptr; + + if (list_empty(&priv->rx_reorder_tbl_ptr)) { + dev_dbg(priv->adapter->dev, + "mwifiex_11n_delba: rx_reorder_tbl_ptr empty\n"); + return; + } + + list_for_each_entry(rx_reor_tbl_ptr, &priv->rx_reorder_tbl_ptr, list) { + if (rx_reor_tbl_ptr->tid == tid) { + dev_dbg(priv->adapter->dev, + "Send delba to tid=%d, %pM\n", + tid, rx_reor_tbl_ptr->ta); + mwifiex_send_delba(priv, tid, rx_reor_tbl_ptr->ta, 0); + return; + } + } +} + /* * This function handles the command response of a delete BA request. */ @@ -819,3 +843,72 @@ u8 mwifiex_get_sec_chan_offset(int chan) return sec_offset; } + +/* This function will send DELBA to entries in the priv's + * Tx BA stream table + */ +static void +mwifiex_send_delba_txbastream_tbl(struct mwifiex_private *priv, u8 tid) +{ + struct mwifiex_adapter *adapter = priv->adapter; + struct mwifiex_tx_ba_stream_tbl *tx_ba_stream_tbl_ptr; + + if (list_empty(&priv->tx_ba_stream_tbl_ptr)) + return; + + list_for_each_entry(tx_ba_stream_tbl_ptr, + &priv->tx_ba_stream_tbl_ptr, list) { + if (tx_ba_stream_tbl_ptr->ba_status == BA_SETUP_COMPLETE) { + if (tid == tx_ba_stream_tbl_ptr->tid) { + dev_dbg(adapter->dev, + "Tx:Send delba to tid=%d, %pM\n", tid, + tx_ba_stream_tbl_ptr->ra); + mwifiex_send_delba(priv, + tx_ba_stream_tbl_ptr->tid, + tx_ba_stream_tbl_ptr->ra, 1); + return; + } + } + } +} + +/* This function updates all the tx_win_size + */ +void mwifiex_update_ampdu_txwinsize(struct mwifiex_adapter *adapter) +{ + u8 i; + u32 tx_win_size; + struct mwifiex_private *priv; + + for (i = 0; i < adapter->priv_num; i++) { + if (!adapter->priv[i]) + continue; + priv = adapter->priv[i]; + tx_win_size = priv->add_ba_param.tx_win_size; + + if (priv->bss_type == MWIFIEX_BSS_TYPE_STA) + priv->add_ba_param.tx_win_size = + MWIFIEX_STA_AMPDU_DEF_TXWINSIZE; + + if (priv->bss_type == MWIFIEX_BSS_TYPE_P2P) + priv->add_ba_param.tx_win_size = + MWIFIEX_STA_AMPDU_DEF_TXWINSIZE; + + if (priv->bss_type == MWIFIEX_BSS_TYPE_UAP) + priv->add_ba_param.tx_win_size = + MWIFIEX_UAP_AMPDU_DEF_TXWINSIZE; + + if (adapter->coex_win_size) { + if (adapter->coex_tx_win_size) + priv->add_ba_param.tx_win_size = + adapter->coex_tx_win_size; + } + + if (tx_win_size != priv->add_ba_param.tx_win_size) { + if (!priv->media_connected) + continue; + for (i = 0; i < MAX_NUM_TID; i++) + mwifiex_send_delba_txbastream_tbl(priv, i); + } + } +} -- cgit v1.2.3