wl1271: Support firmware RX packet aggregation

Instead of retrieving one packet at a time from the firmware, try to
retrieve all available packets at once.
This optimization decreases the number of transactions, which saves
CPU cycles and increases network throughput.

Signed-off-by: Ido Yariv <ido@wizery.com>
Tested-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/net/wireless/wl12xx/wl1271.h b/drivers/net/wireless/wl12xx/wl1271.h
index 779b130fdb3e..8a4cd763e5a2 100644
--- a/drivers/net/wireless/wl12xx/wl1271.h
+++ b/drivers/net/wireless/wl12xx/wl1271.h
@@ -130,6 +130,8 @@ enum {
 
 #define ACX_TX_DESCRIPTORS         32
 
+#define WL1271_AGGR_BUFFER_SIZE (4 * PAGE_SIZE)
+
 enum wl1271_state {
         WL1271_STATE_OFF,
         WL1271_STATE_ON,
@@ -408,6 +410,9 @@ struct wl1271 {
         /* Rx memory pool address */
         struct wl1271_rx_mem_pool_addr rx_mem_pool_addr;
 
+        /* Intermediate buffer, used for packet aggregation */
+        u8 *aggr_buf;
+
         /* The target interrupt mask */
         struct work_struct irq_work;