ag71xx: optimize icache footprint of the receive poll function

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
SVN-Revision: 48691

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 6eafceef0398c85875d488dd1d19756a1dfcb156..2f270c024fe9eecfac4f704fb60eb90ed3a76e92 100644 (file)
--- 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
@@ -995,15 +995,18 @@ static int ag71xx_rx_packets(struct ag71xx *ag, int limit)
        struct ag71xx_ring *ring = &ag->rx_ring;
        int offset = ag71xx_buffer_offset(ag);
        unsigned int pktlen_mask = ag->desc_pktlen_mask;
+       struct sk_buff_head queue;
+       struct sk_buff *skb;
        int done = 0;
 
        DBG("%s: rx packets, limit=%d, curr=%u, dirty=%u\n",
                        dev->name, limit, ring->curr, ring->dirty);
 
+       skb_queue_head_init(&queue);
+
        while (done < limit) {
                unsigned int i = ring->curr % ring->size;
                struct ag71xx_desc *desc = ag71xx_ring_desc(ring, i);
-               struct sk_buff *skb;
                int pktlen;
                int err = 0;
 
@@ -1044,8 +1047,7 @@ static int ag71xx_rx_packets(struct ag71xx *ag, int limit)
                } else {
                        skb->dev = dev;
                        skb->ip_summed = CHECKSUM_NONE;
-                       skb->protocol = eth_type_trans(skb, dev);
-                       netif_receive_skb(skb);
+                       __skb_queue_tail(&queue, skb);
                }
 
 next:
@@ -1057,6 +1059,11 @@ next:
 
        ag71xx_ring_rx_refill(ag);
 
+       while ((skb = __skb_dequeue(&queue)) != NULL) {
+               skb->protocol = eth_type_trans(skb, dev);
+               netif_receive_skb(skb);
+       }
+
        DBG("%s: rx finish, curr=%u, dirty=%u, done=%d\n",
                dev->name, ring->curr, ring->dirty, done);