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authorJeff Garzik <jeff@garzik.org>2007-10-03 17:41:50 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2007-10-10 16:51:16 -0700
commit09f75cd7bf13720738e6a196cc0107ce9a5bd5a0 (patch)
tree4c85b0b395abe7f88c87162fc22570e5de255cb1 /drivers/net/tun.c
parentff8ac60948ba819b89e9c87083e8050fc2f89999 (diff)
downloadop-kernel-dev-09f75cd7bf13720738e6a196cc0107ce9a5bd5a0.zip
op-kernel-dev-09f75cd7bf13720738e6a196cc0107ce9a5bd5a0.tar.gz
[NET] drivers/net: statistics cleanup #1 -- save memory and shrink code
We now have struct net_device_stats embedded in struct net_device, and the default ->get_stats() hook does the obvious thing for us. Run through drivers/net/* and remove the driver-local storage of statistics, and driver-local ->get_stats() hook where applicable. This was just the low-hanging fruit in drivers/net; plenty more drivers remain to be updated. [ Resolved conflicts with napi_struct changes and fix sunqe build regression... -DaveM ] Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/tun.c')
-rw-r--r--drivers/net/tun.c23
1 files changed, 8 insertions, 15 deletions
diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 8b3ec33..d279151 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -110,7 +110,7 @@ static int tun_net_xmit(struct sk_buff *skb, struct net_device *dev)
/* We won't see all dropped packets individually, so overrun
* error is more appropriate. */
- tun->stats.tx_fifo_errors++;
+ dev->stats.tx_fifo_errors++;
} else {
/* Single queue mode.
* Driver handles dropping of all packets itself. */
@@ -129,7 +129,7 @@ static int tun_net_xmit(struct sk_buff *skb, struct net_device *dev)
return 0;
drop:
- tun->stats.tx_dropped++;
+ dev->stats.tx_dropped++;
kfree_skb(skb);
return 0;
}
@@ -172,12 +172,6 @@ tun_net_mclist(struct net_device *dev)
}
}
-static struct net_device_stats *tun_net_stats(struct net_device *dev)
-{
- struct tun_struct *tun = netdev_priv(dev);
- return &tun->stats;
-}
-
/* Initialize net device. */
static void tun_net_init(struct net_device *dev)
{
@@ -250,14 +244,14 @@ static __inline__ ssize_t tun_get_user(struct tun_struct *tun, struct iovec *iv,
align = NET_IP_ALIGN;
if (!(skb = alloc_skb(len + align, GFP_KERNEL))) {
- tun->stats.rx_dropped++;
+ tun->dev->stats.rx_dropped++;
return -ENOMEM;
}
if (align)
skb_reserve(skb, align);
if (memcpy_fromiovec(skb_put(skb, len), iv, len)) {
- tun->stats.rx_dropped++;
+ tun->dev->stats.rx_dropped++;
kfree_skb(skb);
return -EFAULT;
}
@@ -279,8 +273,8 @@ static __inline__ ssize_t tun_get_user(struct tun_struct *tun, struct iovec *iv,
netif_rx_ni(skb);
tun->dev->last_rx = jiffies;
- tun->stats.rx_packets++;
- tun->stats.rx_bytes += len;
+ tun->dev->stats.rx_packets++;
+ tun->dev->stats.rx_bytes += len;
return count;
}
@@ -336,8 +330,8 @@ static __inline__ ssize_t tun_put_user(struct tun_struct *tun,
skb_copy_datagram_iovec(skb, 0, iv, len);
total += len;
- tun->stats.tx_packets++;
- tun->stats.tx_bytes += len;
+ tun->dev->stats.tx_packets++;
+ tun->dev->stats.tx_bytes += len;
return total;
}
@@ -438,7 +432,6 @@ static void tun_setup(struct net_device *dev)
dev->open = tun_net_open;
dev->hard_start_xmit = tun_net_xmit;
dev->stop = tun_net_close;
- dev->get_stats = tun_net_stats;
dev->ethtool_ops = &tun_ethtool_ops;
dev->destructor = free_netdev;
}
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