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>
diff --git a/drivers/net/wireless/wl12xx/wl1271_main.c b/drivers/net/wireless/wl12xx/wl1271_main.c
index cb18f22..8071da1 100644
--- a/drivers/net/wireless/wl12xx/wl1271_main.c
+++ b/drivers/net/wireless/wl12xx/wl1271_main.c
@@ -2459,6 +2459,7 @@
struct platform_device *plat_dev = NULL;
struct wl1271 *wl;
int i, ret;
+ unsigned int order;
hw = ieee80211_alloc_hw(sizeof(*wl), &wl1271_ops);
if (!hw) {
@@ -2517,11 +2518,18 @@
wl1271_debugfs_init(wl);
+ order = get_order(WL1271_AGGR_BUFFER_SIZE);
+ wl->aggr_buf = (u8 *)__get_free_pages(GFP_KERNEL, order);
+ if (!wl->aggr_buf) {
+ ret = -ENOMEM;
+ goto err_hw;
+ }
+
/* Register platform device */
ret = platform_device_register(wl->plat_dev);
if (ret) {
wl1271_error("couldn't register platform device");
- goto err_hw;
+ goto err_aggr;
}
dev_set_drvdata(&wl->plat_dev->dev, wl);
@@ -2547,6 +2555,9 @@
err_platform:
platform_device_unregister(wl->plat_dev);
+err_aggr:
+ free_pages((unsigned long)wl->aggr_buf, order);
+
err_hw:
wl1271_debugfs_exit(wl);
kfree(plat_dev);
@@ -2563,6 +2574,8 @@
int wl1271_free_hw(struct wl1271 *wl)
{
platform_device_unregister(wl->plat_dev);
+ free_pages((unsigned long)wl->aggr_buf,
+ get_order(WL1271_AGGR_BUFFER_SIZE));
kfree(wl->plat_dev);
wl1271_debugfs_exit(wl);