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netdev: introduce dev_get_stats()

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In order for the network device ops get_stats call to be immutable, the handling
of the default internal network device stats block has to be changed. Add a new
helper function which replaces the old use of internal_get_stats.

Note: change return code to make it clear that the caller should not
go changing the returned statistics.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Stephen Hemminger
2008-11-19 21:40:23 -08:00
committed by David S. Miller
parent d314774cf2
commit eeda3fd64f
8 changed files with 33 additions and 18 deletions
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5
drivers/net/bonding/bond_main.c
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@@ -3899,7 +3899,7 @@ static int bond_close(struct net_device *bond_dev)
static struct net_device_stats *bond_get_stats(struct net_device *bond_dev)
{
struct bonding *bond = netdev_priv(bond_dev);
struct net_device_stats *stats = &(bond->stats), *sstats;
struct net_device_stats *stats = &bond->stats;
struct net_device_stats local_stats;
struct slave *slave;
int i;
@@ -3909,7 +3909,8 @@ static struct net_device_stats *bond_get_stats(struct net_device *bond_dev)
read_lock_bh(&bond->lock);
bond_for_each_slave(bond, slave, i) {
sstats = slave->dev->get_stats(slave->dev);
const struct net_device_stats *sstats = dev_get_stats(slave->dev);
local_stats.rx_packets += sstats->rx_packets;
local_stats.rx_bytes += sstats->rx_bytes;
local_stats.rx_errors += sstats->rx_errors;