This patch adds support for another TX queue in driver- bypass
TX queue. This queue is used for sending data/mgmt packets while
in disconnected state i.e. when port is yet not unblocked.
TDLS setup packets would also be queued in this queue.
Signed-off-by: Avinash Patil <patila@xxxxxxxxxxx>
---
drivers/net/wireless/mwifiex/cfg80211.c | 4 +++
drivers/net/wireless/mwifiex/init.c | 1 +
drivers/net/wireless/mwifiex/main.c | 49 ++++++++++++++++++++++++++++--
drivers/net/wireless/mwifiex/main.h | 2 ++
drivers/net/wireless/mwifiex/wmm.c | 53 +++++++++++++++++++++++++++++++++
drivers/net/wireless/mwifiex/wmm.h | 4 +++
6 files changed, 111 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/mwifiex/cfg80211.c b/drivers/net/wireless/mwifiex/cfg80211.c
index 1d445cb..46f9dc2 100644
--- a/drivers/net/wireless/mwifiex/cfg80211.c
+++ b/drivers/net/wireless/mwifiex/cfg80211.c
@@ -2789,6 +2789,7 @@ int mwifiex_del_virtual_intf(struct wiphy *wiphy, struct wireless_dev *wdev)
{
struct mwifiex_private *priv = mwifiex_netdev_get_priv(wdev->netdev);
struct mwifiex_adapter *adapter = priv->adapter;
+ struct sk_buff *skb, *tmp;
#ifdef CONFIG_DEBUG_FS
mwifiex_dev_debugfs_remove(priv);
@@ -2796,6 +2797,9 @@ int mwifiex_del_virtual_intf(struct wiphy *wiphy, struct wireless_dev *wdev)
mwifiex_stop_net_dev_queue(priv->netdev, adapter);
+ skb_queue_walk_safe(&priv->bypass_txq, skb, tmp)
+ mwifiex_write_data_complete(priv->adapter, skb, 0, -1);
+
if (netif_carrier_ok(priv->netdev))
netif_carrier_off(priv->netdev);
diff --git a/drivers/net/wireless/mwifiex/init.c b/drivers/net/wireless/mwifiex/init.c
index df7fdc0..e1b62bf 100644
--- a/drivers/net/wireless/mwifiex/init.c
+++ b/drivers/net/wireless/mwifiex/init.c
@@ -499,6 +499,7 @@ int mwifiex_init_lock_list(struct mwifiex_adapter *adapter)
INIT_LIST_HEAD(&priv->sta_list);
INIT_LIST_HEAD(&priv->auto_tdls_list);
skb_queue_head_init(&priv->tdls_txq);
+ skb_queue_head_init(&priv->bypass_txq);
spin_lock_init(&priv->tx_ba_stream_tbl_lock);
spin_lock_init(&priv->rx_reorder_tbl_lock);
diff --git a/drivers/net/wireless/mwifiex/main.c b/drivers/net/wireless/mwifiex/main.c
index 2a2e5db..278dc94 100644
--- a/drivers/net/wireless/mwifiex/main.c
+++ b/drivers/net/wireless/mwifiex/main.c
@@ -276,6 +276,7 @@ process_start:
!adapter->pm_wakeup_fw_try) &&
(is_command_pending(adapter) ||
!skb_queue_empty(&adapter->tx_data_q) ||
+ !mwifiex_bypass_txlist_empty(adapter) ||
!mwifiex_wmm_lists_empty(adapter))) {
adapter->pm_wakeup_fw_try = true;
mod_timer(&adapter->wakeup_timer, jiffies + (HZ*3));
@@ -303,6 +304,7 @@ process_start:
(mwifiex_get_priv(adapter,
MWIFIEX_BSS_ROLE_STA)) ||
(mwifiex_wmm_lists_empty(adapter) &&
+ mwifiex_bypass_txlist_empty(adapter) &&
skb_queue_empty(&adapter->tx_data_q))) {
if (adapter->cmd_sent || adapter->curr_cmd ||
!mwifiex_is_send_cmd_allowed
@@ -373,6 +375,22 @@ process_start:
if ((adapter->scan_chan_gap_enabled ||
!adapter->scan_processing) &&
+ !adapter->data_sent &&
+ !mwifiex_bypass_txlist_empty(adapter) &&
+ !mwifiex_is_tdls_chan_switching
+ (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {
+ mwifiex_process_bypass_tx(adapter);
+ if (adapter->hs_activated) {
+ adapter->is_hs_configured = false;
+ mwifiex_hs_activated_event
+ (mwifiex_get_priv
+ (adapter, MWIFIEX_BSS_ROLE_ANY),
+ false);
+ }
+ }
+
+ if ((adapter->scan_chan_gap_enabled ||
+ !adapter->scan_processing) &&
!adapter->data_sent && !mwifiex_wmm_lists_empty(adapter) &&
!mwifiex_is_tdls_chan_switching
(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {
@@ -389,6 +407,7 @@ process_start:
if (adapter->delay_null_pkt && !adapter->cmd_sent &&
!adapter->curr_cmd && !is_command_pending(adapter) &&
(mwifiex_wmm_lists_empty(adapter) &&
+ mwifiex_bypass_txlist_empty(adapter) &&
skb_queue_empty(&adapter->tx_data_q))) {
if (!mwifiex_send_null_packet
(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA),
@@ -659,6 +678,26 @@ mwifiex_close(struct net_device *dev)
return 0;
}
+static bool
+mwifiex_bypass_tx_queue(struct mwifiex_private *priv,
+ struct sk_buff *skb)
+{
+ struct ethhdr *eth_hdr = (struct ethhdr *)skb->data;
+
+ if (ntohs(eth_hdr->h_proto) == ETH_P_PAE ||
+ mwifiex_is_skb_mgmt_frame(skb) ||
+ (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA &&
+ ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
+ (ntohs(eth_hdr->h_proto) == ETH_P_TDLS))) {
+ mwifiex_dbg(priv->adapter, DATA,
+ "bypass txqueue; eth type %#x, mgmt %d\n",
+ ntohs(eth_hdr->h_proto),
+ mwifiex_is_skb_mgmt_frame(skb));
+ return true;
+ }
+
+ return false;
+}
/*
* Add buffer into wmm tx queue and queue work to transmit it.
*/
@@ -676,8 +715,14 @@ int mwifiex_queue_tx_pkt(struct mwifiex_private *priv, struct sk_buff *skb)
}
}
- atomic_inc(&priv->adapter->tx_pending);
- mwifiex_wmm_add_buf_txqueue(priv, skb);
+ if (mwifiex_bypass_tx_queue(priv, skb)) {
+ atomic_inc(&priv->adapter->tx_pending);
+ atomic_inc(&priv->adapter->bypass_tx_pending);
+ mwifiex_wmm_add_buf_bypass_txqueue(priv, skb);
+ } else {
+ atomic_inc(&priv->adapter->tx_pending);
+ mwifiex_wmm_add_buf_txqueue(priv, skb);
+ }
mwifiex_queue_main_work(priv->adapter);
diff --git a/drivers/net/wireless/mwifiex/main.h b/drivers/net/wireless/mwifiex/main.h
index d74ef2d..c59430e 100644
--- a/drivers/net/wireless/mwifiex/main.h
+++ b/drivers/net/wireless/mwifiex/main.h
@@ -664,6 +664,7 @@ struct mwifiex_private {
struct cfg80211_beacon_data beacon_after;
struct mwifiex_11h_intf_state state_11h;
struct mwifiex_ds_mem_rw mem_rw;
+ struct sk_buff_head bypass_txq;
};
@@ -834,6 +835,7 @@ struct mwifiex_adapter {
wait_queue_head_t init_wait_q;
void *card;
struct mwifiex_if_ops if_ops;
+ atomic_t bypass_tx_pending;
atomic_t rx_pending;
atomic_t tx_pending;
atomic_t cmd_pending;
diff --git a/drivers/net/wireless/mwifiex/wmm.c b/drivers/net/wireless/mwifiex/wmm.c
index 6196daa..7995f92 100644
--- a/drivers/net/wireless/mwifiex/wmm.c
+++ b/drivers/net/wireless/mwifiex/wmm.c
@@ -449,6 +449,11 @@ mwifiex_wmm_init(struct mwifiex_adapter *adapter)
}
}
+int mwifiex_bypass_txlist_empty(struct mwifiex_adapter *adapter)
+{
+ return atomic_read(&adapter->bypass_tx_pending) ? false : true;
+}
+
/*
* This function checks if WMM Tx queue is empty.
*/
@@ -581,6 +586,10 @@ mwifiex_clean_txrx(struct mwifiex_private *priv)
skb_queue_walk_safe(&priv->tdls_txq, skb, tmp)
mwifiex_write_data_complete(priv->adapter, skb, 0, -1);
+ skb_queue_walk_safe(&priv->bypass_txq, skb, tmp)
+ mwifiex_write_data_complete(priv->adapter, skb, 0, -1);
+ atomic_set(&priv->adapter->bypass_tx_pending, 0);
+
idr_for_each(&priv->ack_status_frames, mwifiex_free_ack_frame, NULL);
idr_destroy(&priv->ack_status_frames);
}
@@ -753,6 +762,18 @@ mwifiex_is_ralist_valid(struct mwifiex_private *priv,
}
/*
+ * This function adds a packet to bypass TX queue.
+ * This is special TX queue for packets which can be sent even when port_open
+ * is false.
+ */
+void
+mwifiex_wmm_add_buf_bypass_txqueue(struct mwifiex_private *priv,
+ struct sk_buff *skb)
+{
+ skb_queue_tail(&priv->bypass_txq, skb);
+}
+
+/*
* This function adds a packet to WMM queue.
*
* In disconnected state the packet is immediately dropped and the
@@ -1429,6 +1450,38 @@ mwifiex_dequeue_tx_packet(struct mwifiex_adapter *adapter)
return 0;
}
+void mwifiex_process_bypass_tx(struct mwifiex_adapter *adapter)
+{
+ struct mwifiex_tx_param tx_param;
+ struct sk_buff *skb;
+ struct mwifiex_txinfo *tx_info;
+ struct mwifiex_private *priv;
+ int i;
+
+ if (adapter->data_sent || adapter->tx_lock_flag)
+ return;
+
+ for (i = 0; i < adapter->priv_num; ++i) {
+ priv = adapter->priv[i];
+
+ if (skb_queue_empty(&priv->bypass_txq))
+ continue;
+
+ skb = skb_dequeue(&priv->bypass_txq);
+ tx_info = MWIFIEX_SKB_TXCB(skb);
+
+ /* no aggregation for bypass packets */
+ tx_param.next_pkt_len = 0;
+
+ if (mwifiex_process_tx(priv, skb, &tx_param) == -EBUSY) {
+ skb_queue_head(&priv->bypass_txq, skb);
+ tx_info->flags |= MWIFIEX_BUF_FLAG_REQUEUED_PKT;
+ } else {
+ atomic_dec(&adapter->bypass_tx_pending);
+ }
+ }
+}
+
/*
* This function transmits the highest priority packet awaiting in the
* WMM Queues.
diff --git a/drivers/net/wireless/mwifiex/wmm.h b/drivers/net/wireless/mwifiex/wmm.h
index c12dd0e..38f0976 100644
--- a/drivers/net/wireless/mwifiex/wmm.h
+++ b/drivers/net/wireless/mwifiex/wmm.h
@@ -99,12 +99,16 @@ mwifiex_wmm_is_ra_list_empty(struct list_head *ra_list_hhead)
void mwifiex_wmm_add_buf_txqueue(struct mwifiex_private *priv,
struct sk_buff *skb);
+void mwifiex_wmm_add_buf_bypass_txqueue(struct mwifiex_private *priv,
+ struct sk_buff *skb);
void mwifiex_ralist_add(struct mwifiex_private *priv, const u8 *ra);
void mwifiex_rotate_priolists(struct mwifiex_private *priv,
struct mwifiex_ra_list_tbl *ra, int tid);
int mwifiex_wmm_lists_empty(struct mwifiex_adapter *adapter);
+int mwifiex_bypass_txlist_empty(struct mwifiex_adapter *adapter);
void mwifiex_wmm_process_tx(struct mwifiex_adapter *adapter);
+void mwifiex_process_bypass_tx(struct mwifiex_adapter *adapter);
int mwifiex_is_ralist_valid(struct mwifiex_private *priv,
struct mwifiex_ra_list_tbl *ra_list, int tid);
--
1.8.1.4
--
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