From: Rosen Penev <rosenp@gmail.com>
Date: Sun, 3 Sep 2017 18:35:46 +0000 (-0700)
Subject: ar71xx: Add GRO support to ag71xx
X-Git-Tag: v18.06.0-rc1~2272
X-Git-Url: http://git.openwrt.org/?p=openwrt%2Fopenwrt.git;a=commitdiff_plain;h=13e5e473699b92f171205e0f5c57c9ebe7922492

ar71xx: Add GRO support to ag71xx

On a TL-WN710N, this patch increases iperf performance from ~92.5 to ~93.5 mbps. Keep in mind the WN710N is a 100mbps device. I expect greater numbers from gigabit devices.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
---

diff --git a/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c b/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c
index 566e9513d8..ae1bdf6066 100644
--- a/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c
+++ b/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c
@@ -1089,7 +1089,7 @@ next:
 
 	while ((skb = __skb_dequeue(&queue)) != NULL) {
 		skb->protocol = eth_type_trans(skb, dev);
-		netif_receive_skb(skb);
+		napi_gro_receive(&ag->napi, skb);
 	}
 
 	DBG("%s: rx finish, curr=%u, dirty=%u, done=%d\n",
@@ -1141,7 +1141,7 @@ static int ag71xx_poll(struct napi_struct *napi, int limit)
 		DBG("%s: disable polling mode, rx=%d, tx=%d,limit=%d\n",
 			dev->name, rx_done, tx_done, limit);
 
-		napi_complete(napi);
+		napi_complete_done(napi, rx_done);
 
 		/* enable interrupts */
 		spin_lock_irqsave(&ag->lock, flags);
@@ -1160,7 +1160,7 @@ oom:
 		pr_info("%s: out of memory\n", dev->name);
 
 	mod_timer(&ag->oom_timer, jiffies + AG71XX_OOM_REFILL);
-	napi_complete(napi);
+	napi_complete_done(napi, rx_done);
 	return 0;
 }