diff options
author | Woojung Huh <woojung.huh@microchip.com> | 2016-04-25 22:22:32 (GMT) |
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committer | David S. Miller <davem@davemloft.net> | 2016-04-28 20:36:11 (GMT) |
commit | 74d79a2e30c476ccc7d45ecf978f38d815287f81 (patch) | |
tree | c31c0e3a0a8bd7c25351654145168a762cfb146f /drivers/net/usb | |
parent | 1d9619d5337df6cf56eb66b6c8213d1317583513 (diff) | |
download | linux-74d79a2e30c476ccc7d45ecf978f38d815287f81.tar.xz |
lan78xx: fix statistics counter error
Fix rx_bytes, tx_bytes and tx_frames error in netdev.stats.
- rx_bytes counted bytes excluding size of struct ethhdr.
- tx_packets didn't count multiple packets in a single urb
- tx_bytes included 8 bytes of extra commands.
Signed-off-by: Woojung Huh <woojung.huh@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/usb')
-rw-r--r-- | drivers/net/usb/lan78xx.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c index f20890e..0460b81 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 { @@ -2464,7 +2465,7 @@ 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 +2682,11 @@ 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 +2936,16 @@ 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 +2966,13 @@ 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 +2984,7 @@ 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); |