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path: root/drivers/net/usb/lan78xx.c
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Diffstat (limited to 'drivers/net/usb/lan78xx.c')
-rw-r--r--drivers/net/usb/lan78xx.c44
1 files changed, 38 insertions, 6 deletions
diff --git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c
index f20890ee03f3..f64778ad9753 100644
--- a/drivers/net/usb/lan78xx.c
+++ b/drivers/net/usb/lan78xx.c
@@ -269,6 +269,7 @@ struct skb_data { /* skb->cb is one of these */
struct lan78xx_net *dev;
enum skb_state state;
size_t length;
+ int num_of_packet;
};
struct usb_context {
@@ -1803,7 +1804,34 @@ static void lan78xx_remove_mdio(struct lan78xx_net *dev)
static void lan78xx_link_status_change(struct net_device *net)
{
- /* nothing to do */
+ struct phy_device *phydev = net->phydev;
+ int ret, temp;
+
+ /* At forced 100 F/H mode, chip may fail to set mode correctly
+ * when cable is switched between long(~50+m) and short one.
+ * As workaround, set to 10 before setting to 100
+ * at forced 100 F/H mode.
+ */
+ if (!phydev->autoneg && (phydev->speed == 100)) {
+ /* disable phy interrupt */
+ temp = phy_read(phydev, LAN88XX_INT_MASK);
+ temp &= ~LAN88XX_INT_MASK_MDINTPIN_EN_;
+ ret = phy_write(phydev, LAN88XX_INT_MASK, temp);
+
+ temp = phy_read(phydev, MII_BMCR);
+ temp &= ~(BMCR_SPEED100 | BMCR_SPEED1000);
+ phy_write(phydev, MII_BMCR, temp); /* set to 10 first */
+ temp |= BMCR_SPEED100;
+ phy_write(phydev, MII_BMCR, temp); /* set to 100 later */
+
+ /* clear pending interrupt generated while workaround */
+ temp = phy_read(phydev, LAN88XX_INT_STS);
+
+ /* enable phy interrupt back */
+ temp = phy_read(phydev, LAN88XX_INT_MASK);
+ temp |= LAN88XX_INT_MASK_MDINTPIN_EN_;
+ ret = phy_write(phydev, LAN88XX_INT_MASK, temp);
+ }
}
static int lan78xx_phy_init(struct lan78xx_net *dev)
@@ -2464,7 +2492,7 @@ static void tx_complete(struct urb *urb)
struct lan78xx_net *dev = entry->dev;
if (urb->status == 0) {
- dev->net->stats.tx_packets++;
+ dev->net->stats.tx_packets += entry->num_of_packet;
dev->net->stats.tx_bytes += entry->length;
} else {
dev->net->stats.tx_errors++;
@@ -2681,10 +2709,11 @@ void lan78xx_skb_return(struct lan78xx_net *dev, struct sk_buff *skb)
return;
}
- skb->protocol = eth_type_trans(skb, dev->net);
dev->net->stats.rx_packets++;
dev->net->stats.rx_bytes += skb->len;
+ skb->protocol = eth_type_trans(skb, dev->net);
+
netif_dbg(dev, rx_status, dev->net, "< rx, len %zu, type 0x%x\n",
skb->len + sizeof(struct ethhdr), skb->protocol);
memset(skb->cb, 0, sizeof(struct skb_data));
@@ -2934,13 +2963,16 @@ static void lan78xx_tx_bh(struct lan78xx_net *dev)
skb_totallen = 0;
pkt_cnt = 0;
+ count = 0;
+ length = 0;
for (skb = tqp->next; pkt_cnt < tqp->qlen; skb = skb->next) {
if (skb_is_gso(skb)) {
if (pkt_cnt) {
/* handle previous packets first */
break;
}
- length = skb->len;
+ count = 1;
+ length = skb->len - TX_OVERHEAD;
skb2 = skb_dequeue(tqp);
goto gso_skb;
}
@@ -2961,14 +2993,13 @@ static void lan78xx_tx_bh(struct lan78xx_net *dev)
for (count = pos = 0; count < pkt_cnt; count++) {
skb2 = skb_dequeue(tqp);
if (skb2) {
+ length += (skb2->len - TX_OVERHEAD);
memcpy(skb->data + pos, skb2->data, skb2->len);
pos += roundup(skb2->len, sizeof(u32));
dev_kfree_skb(skb2);
}
}
- length = skb_totallen;
-
gso_skb:
urb = usb_alloc_urb(0, GFP_ATOMIC);
if (!urb) {
@@ -2980,6 +3011,7 @@ gso_skb:
entry->urb = urb;
entry->dev = dev;
entry->length = length;
+ entry->num_of_packet = count;
spin_lock_irqsave(&dev->txq.lock, flags);
ret = usb_autopm_get_interface_async(dev->intf);