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| author | Eric Dumazet <edumazet@google.com> | 2014-03-27 08:45:56 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-03-28 16:49:48 -0400 |
| commit | 015f0688f57ca4d499047d335b8052a733e17a4d (patch) | |
| tree | ab376c7815815728d7f595e4a1b37ee303bfefc4 /net/core/dev.c | |
| parent | 43279500decad66ccdddacae7948a1d23be1bef6 (diff) | |
| download | linux-015f0688f57ca4d499047d335b8052a733e17a4d.tar.gz linux-015f0688f57ca4d499047d335b8052a733e17a4d.tar.bz2 linux-015f0688f57ca4d499047d335b8052a733e17a4d.zip | |
net: net: add a core netdev->tx_dropped counter
Dropping packets in __dev_queue_xmit() when transmit queue
is stopped (NIC TX ring buffer full or BQL limit reached) currently
outputs a syslog message.
It would be better to get a precise count of such events available in
netdevice stats so that monitoring tools can have a clue.
This extends the work done in caf586e5f23ce
("net: add a core netdev->rx_dropped counter")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/dev.c')
| -rw-r--r-- | net/core/dev.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index 48dd323d5918..98ba581b89f0 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -2880,6 +2880,7 @@ recursion_alert: rc = -ENETDOWN; rcu_read_unlock_bh(); + atomic_long_inc(&dev->tx_dropped); kfree_skb(skb); return rc; out: @@ -6238,6 +6239,7 @@ struct rtnl_link_stats64 *dev_get_stats(struct net_device *dev, netdev_stats_to_stats64(storage, &dev->stats); } storage->rx_dropped += atomic_long_read(&dev->rx_dropped); + storage->tx_dropped += atomic_long_read(&dev->tx_dropped); return storage; } EXPORT_SYMBOL(dev_get_stats); |