mwifiex: add rx workqueue support

This patch adds RX work queue support to mwifiex.
Packets received are queued to internal queue which are then
processed by scheduling a work item for RX process.

RX work is enabled only on SMP systems.

Reviewed-by: James Cameron <quozl@laptop.org>
Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Marc Yang <yangyang@marvell.com>
Signed-off-by: Cathy Luo <cluo@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/drivers/net/wireless/mwifiex/main.h b/drivers/net/wireless/mwifiex/main.h
index e9cd4ab4902d..1a999999b391 100644
--- a/drivers/net/wireless/mwifiex/main.h
+++ b/drivers/net/wireless/mwifiex/main.h
@@ -58,6 +58,9 @@ enum {
 #define MAX_TX_PENDING      100
 #define LOW_TX_PENDING      80
 
+#define HIGH_RX_PENDING     50
+#define LOW_RX_PENDING      20
+
 #define MWIFIEX_UPLD_SIZE               (2312)
 
 #define MAX_EVENT_SIZE                  2048
@@ -714,6 +717,12 @@ struct mwifiex_adapter {
         atomic_t cmd_pending;
         struct workqueue_struct *workqueue;
         struct work_struct main_work;
+        struct workqueue_struct *rx_workqueue;
+        struct work_struct rx_work;
+        bool rx_work_enabled;
+        bool rx_processing;
+        bool delay_main_work;
+        bool rx_locked;
         struct mwifiex_bss_prio_tbl bss_prio_tbl[MWIFIEX_MAX_BSS_NUM];
         /* spin lock for init/shutdown */
         spinlock_t mwifiex_lock;
@@ -754,6 +763,10 @@ struct mwifiex_adapter {
         struct list_head scan_pending_q;
         /* spin lock for scan_pending_q */
         spinlock_t scan_pending_q_lock;
+        /* spin lock for RX queue */
+        spinlock_t rx_q_lock;
+        /* spin lock for RX processing routine */
+        spinlock_t rx_proc_lock;
         struct sk_buff_head usb_rx_data_q;
         u32 scan_processing;
         u16 region_code;
@@ -831,6 +844,7 @@ struct mwifiex_adapter {
         u8 num_mem_types;
         u8 curr_mem_idx;
         bool scan_chan_gap_enabled;
+        struct sk_buff_head rx_data_q;
 };
 
 int mwifiex_init_lock_list(struct mwifiex_adapter *adapter);