wl12xx: use round-robin policy for tx
Currently, a single vif might starve all the other vifs.
Save the last vif we dequeued a packet from, and continue
with the following one using a round-robin policy.
Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
diff --git a/drivers/net/wireless/wl12xx/main.c b/drivers/net/wireless/wl12xx/main.c
index 6e6ac63f..f29d18d 100644
--- a/drivers/net/wireless/wl12xx/main.c
+++ b/drivers/net/wireless/wl12xx/main.c
@@ -2282,6 +2282,8 @@
wl12xx_tx_reset_wlvif(wl, wlvif);
wl1271_free_ap_keys(wl, wlvif);
+ if (wl->last_wlvif == wlvif)
+ wl->last_wlvif = NULL;
list_del(&wlvif->list);
memset(wlvif->ap.sta_hlid_map, 0, sizeof(wlvif->ap.sta_hlid_map));
wlvif->role_id = WL12XX_INVALID_ROLE_ID;
diff --git a/drivers/net/wireless/wl12xx/tx.c b/drivers/net/wireless/wl12xx/tx.c
index 69ac03f..5aeef95 100644
--- a/drivers/net/wireless/wl12xx/tx.c
+++ b/drivers/net/wireless/wl12xx/tx.c
@@ -590,14 +590,28 @@
static struct sk_buff *wl1271_skb_dequeue(struct wl1271 *wl)
{
unsigned long flags;
- struct wl12xx_vif *wlvif;
+ struct wl12xx_vif *wlvif = wl->last_wlvif;
struct sk_buff *skb = NULL;
- /* TODO: rememeber last vif and consider it */
- wl12xx_for_each_wlvif(wl, wlvif) {
- skb = wl12xx_vif_skb_dequeue(wl, wlvif);
- if (skb)
- break;
+ if (wlvif) {
+ wl12xx_for_each_wlvif_continue(wl, wlvif) {
+ skb = wl12xx_vif_skb_dequeue(wl, wlvif);
+ if (skb) {
+ wl->last_wlvif = wlvif;
+ break;
+ }
+ }
+ }
+
+ /* do another pass */
+ if (!skb) {
+ wl12xx_for_each_wlvif(wl, wlvif) {
+ skb = wl12xx_vif_skb_dequeue(wl, wlvif);
+ if (skb) {
+ wl->last_wlvif = wlvif;
+ break;
+ }
+ }
}
if (!skb &&
diff --git a/drivers/net/wireless/wl12xx/wl12xx.h b/drivers/net/wireless/wl12xx/wl12xx.h
index d169d52..8815fd9 100644
--- a/drivers/net/wireless/wl12xx/wl12xx.h
+++ b/drivers/net/wireless/wl12xx/wl12xx.h
@@ -552,6 +552,9 @@
/* AP-mode - number of currently connected stations */
int active_sta_count;
+
+ /* last wlvif we transmitted from */
+ struct wl12xx_vif *last_wlvif;
};
struct wl1271_station {
@@ -693,6 +696,9 @@
#define wl12xx_for_each_wlvif(wl, wlvif) \
list_for_each_entry(wlvif, &wl->wlvif_list, list)
+#define wl12xx_for_each_wlvif_continue(wl, wlvif) \
+ list_for_each_entry_continue(wlvif, &wl->wlvif_list, list)
+
#define wl12xx_for_each_wlvif_bss_type(wl, wlvif, _bss_type) \
wl12xx_for_each_wlvif(wl, wlvif) \
if (wlvif->bss_type == _bss_type)