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ag71xx: optimize icache footprint of the receive poll function

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

SVN-Revision: 48691
This commit is contained in:
Felix Fietkau 2016-02-11 15:01:48 +00:00
parent 2c17b8bcc5
commit b7a2c533da
1 changed files with 10 additions and 3 deletions
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13
target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c
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@ -995,15 +995,18 @@ static int ag71xx_rx_packets(struct ag71xx *ag, int limit)
struct ag71xx_ring *ring = &ag->rx_ring; struct ag71xx_ring *ring = &ag->rx_ring;
int offset = ag71xx_buffer_offset(ag); int offset = ag71xx_buffer_offset(ag);
unsigned int pktlen_mask = ag->desc_pktlen_mask; unsigned int pktlen_mask = ag->desc_pktlen_mask;
struct sk_buff_head queue;
struct sk_buff *skb;
int done = 0; int done = 0;
DBG("%s: rx packets, limit=%d, curr=%u, dirty=%u\n", DBG("%s: rx packets, limit=%d, curr=%u, dirty=%u\n",
dev->name, limit, ring->curr, ring->dirty); dev->name, limit, ring->curr, ring->dirty);
skb_queue_head_init(&queue);
while (done < limit) { while (done < limit) {
unsigned int i = ring->curr % ring->size; unsigned int i = ring->curr % ring->size;
struct ag71xx_desc *desc = ag71xx_ring_desc(ring, i); struct ag71xx_desc *desc = ag71xx_ring_desc(ring, i);
struct sk_buff *skb;
int pktlen; int pktlen;
int err = 0; int err = 0;
@ -1044,8 +1047,7 @@ static int ag71xx_rx_packets(struct ag71xx *ag, int limit)
} else { } else {
skb->dev = dev; skb->dev = dev;
skb->ip_summed = CHECKSUM_NONE; skb->ip_summed = CHECKSUM_NONE;
skb->protocol = eth_type_trans(skb, dev); __skb_queue_tail(&queue, skb);
netif_receive_skb(skb);
} }
next: next:
@ -1057,6 +1059,11 @@ next:
ag71xx_ring_rx_refill(ag); 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", DBG("%s: rx finish, curr=%u, dirty=%u, done=%d\n",
dev->name, ring->curr, ring->dirty, done); dev->name, ring->curr, ring->dirty, done);