diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/sky2.c | 38 | ||||
| -rw-r--r-- | drivers/net/sky2.h | 1 |
2 files changed, 28 insertions, 11 deletions
diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c index 6e95d2f5410..4f2afc770f8 100644 --- a/drivers/net/sky2.c +++ b/drivers/net/sky2.c @@ -1176,6 +1176,7 @@ static void sky2_rx_clean(struct sky2_port *sky2) re->skb = NULL; } } + skb_queue_purge(&sky2->rx_recycle); } /* Basic MII support */ @@ -1252,6 +1253,12 @@ static void sky2_vlan_rx_register(struct net_device *dev, struct vlan_group *grp } #endif +/* Amount of required worst case padding in rx buffer */ +static inline unsigned sky2_rx_pad(const struct sky2_hw *hw) +{ + return (hw->flags & SKY2_HW_RAM_BUFFER) ? 8 : 2; +} + /* * Allocate an skb for receiving. If the MTU is large enough * make the skb non-linear with a fragment list of pages. @@ -1261,6 +1268,13 @@ static struct sk_buff *sky2_rx_alloc(struct sky2_port *sky2) struct sk_buff *skb; int i; + skb = __skb_dequeue(&sky2->rx_recycle); + if (!skb) + skb = netdev_alloc_skb(sky2->netdev, sky2->rx_data_size + + sky2_rx_pad(sky2->hw)); + if (!skb) + goto nomem; + if (sky2->hw->flags & SKY2_HW_RAM_BUFFER) { unsigned char *start; /* @@ -1269,18 +1283,10 @@ static struct sk_buff *sky2_rx_alloc(struct sky2_port *sky2) * The buffer returned from netdev_alloc_skb is * aligned except if slab debugging is enabled. */ - skb = netdev_alloc_skb(sky2->netdev, sky2->rx_data_size + 8); - if (!skb) - goto nomem; start = PTR_ALIGN(skb->data, 8); skb_reserve(skb, start - skb->data); - } else { - skb = netdev_alloc_skb(sky2->netdev, - sky2->rx_data_size + NET_IP_ALIGN); - if (!skb) - goto nomem; + } else skb_reserve(skb, NET_IP_ALIGN); - } for (i = 0; i < sky2->rx_nfrags; i++) { struct page *page = alloc_page(GFP_ATOMIC); @@ -1357,6 +1363,8 @@ static int sky2_rx_start(struct sky2_port *sky2) sky2->rx_data_size = size; + skb_queue_head_init(&sky2->rx_recycle); + /* Fill Rx ring */ for (i = 0; i < sky2->rx_pending; i++) { re = sky2->rx_ring + i; @@ -1764,14 +1772,22 @@ static void sky2_tx_complete(struct sky2_port *sky2, u16 done) } if (le->ctrl & EOP) { + struct sk_buff *skb = re->skb; + if (unlikely(netif_msg_tx_done(sky2))) printk(KERN_DEBUG "%s: tx done %u\n", dev->name, idx); dev->stats.tx_packets++; - dev->stats.tx_bytes += re->skb->len; + dev->stats.tx_bytes += skb->len; + + if (skb_queue_len(&sky2->rx_recycle) < sky2->rx_pending + && skb_recycle_check(skb, sky2->rx_data_size + + sky2_rx_pad(sky2->hw))) + __skb_queue_head(&sky2->rx_recycle, skb); + else + dev_kfree_skb_any(skb); - dev_kfree_skb_any(re->skb); sky2->tx_next = RING_NEXT(idx, TX_RING_SIZE); } } diff --git a/drivers/net/sky2.h b/drivers/net/sky2.h index 92fb24b27d4..b5549c9e510 100644 --- a/drivers/net/sky2.h +++ b/drivers/net/sky2.h @@ -2028,6 +2028,7 @@ struct sky2_port { u16 rx_pending; u16 rx_data_size; u16 rx_nfrags; + struct sk_buff_head rx_recycle; #ifdef SKY2_VLAN_TAG_USED u16 rx_tag; |