diff options
Diffstat (limited to 'drivers/net/usb/r8152.c')
| -rw-r--r-- | drivers/net/usb/r8152.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c index 8a786b65d883..f92e0cfb5d87 100644 --- a/drivers/net/usb/r8152.c +++ b/drivers/net/usb/r8152.c @@ -365,6 +365,7 @@ struct r8152 { struct mii_if_info mii; int intr_interval; u32 msg_enable; + u32 tx_qlen; u16 ocp_base; u8 *intr_buff; u8 version; @@ -1173,6 +1174,14 @@ static int r8152_tx_agg_fill(struct r8152 *tp, struct tx_agg *agg) remain = rx_buf_sz - (int)(tx_agg_align(tx_data) - agg->head); } + netif_tx_lock(tp->netdev); + + if (netif_queue_stopped(tp->netdev) && + skb_queue_len(&tp->tx_queue) < tp->tx_qlen) + netif_wake_queue(tp->netdev); + + netif_tx_unlock(tp->netdev); + usb_fill_bulk_urb(agg->urb, tp->udev, usb_sndbulkpipe(tp->udev, 2), agg->head, (int)(tx_data - (u8 *)agg->head), (usb_complete_t)write_bulk_callback, agg); @@ -1393,6 +1402,10 @@ static netdev_tx_t rtl8152_start_xmit(struct sk_buff *skb, skb_queue_tail(&tp->tx_queue, skb); + if (list_empty(&tp->tx_free) && + skb_queue_len(&tp->tx_queue) > tp->tx_qlen) + netif_stop_queue(netdev); + if (!list_empty(&tp->tx_free)) tasklet_schedule(&tp->tl); @@ -1423,6 +1436,14 @@ static void rtl8152_nic_reset(struct r8152 *tp) } } +static void set_tx_qlen(struct r8152 *tp) +{ + struct net_device *netdev = tp->netdev; + + tp->tx_qlen = rx_buf_sz / (netdev->mtu + VLAN_ETH_HLEN + VLAN_HLEN + + sizeof(struct tx_desc)); +} + static inline u8 rtl8152_get_speed(struct r8152 *tp) { return ocp_read_byte(tp, MCU_TYPE_PLA, PLA_PHYSTATUS); @@ -1434,6 +1455,7 @@ static int rtl8152_enable(struct r8152 *tp) int i, ret; u8 speed; + set_tx_qlen(tp); speed = rtl8152_get_speed(tp); if (speed & _10bps) { ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_EEEP_CR); |