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authorEric Dumazet <eric.dumazet@gmail.com>2009-11-16 03:36:51 +0000
committerDavid S. Miller <davem@davemloft.net>2009-11-17 23:51:52 -0800
commitd83345adf96bc13a5e360f4649a2e68ef968dec0 (patch)
tree015fe31fde6b5ea6abc6ebb75aa446fa63fcbb79 /net/core
parentb038b0401f9697ee1d7df40021b96e7de0564938 (diff)
downloadop-kernel-dev-d83345adf96bc13a5e360f4649a2e68ef968dec0.zip
op-kernel-dev-d83345adf96bc13a5e360f4649a2e68ef968dec0.tar.gz
net: add dev_txq_stats_fold() helper
Some drivers ndo_get_stats() method need to perform txqueue stats folding. Move folding from dev_get_stats() to a new dev_txq_stats_fold() function Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
-rw-r--r--net/core/dev.c48
1 files changed, 29 insertions, 19 deletions
diff --git a/net/core/dev.c b/net/core/dev.c
index d867522..c3e0578 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -5169,6 +5169,32 @@ void netdev_run_todo(void)
}
/**
+ * dev_txq_stats_fold - fold tx_queues stats
+ * @dev: device to get statistics from
+ * @stats: struct net_device_stats to hold results
+ */
+void dev_txq_stats_fold(const struct net_device *dev,
+ struct net_device_stats *stats)
+{
+ unsigned long tx_bytes = 0, tx_packets = 0, tx_dropped = 0;
+ unsigned int i;
+ struct netdev_queue *txq;
+
+ for (i = 0; i < dev->num_tx_queues; i++) {
+ txq = netdev_get_tx_queue(dev, i);
+ tx_bytes += txq->tx_bytes;
+ tx_packets += txq->tx_packets;
+ tx_dropped += txq->tx_dropped;
+ }
+ if (tx_bytes || tx_packets || tx_dropped) {
+ stats->tx_bytes = tx_bytes;
+ stats->tx_packets = tx_packets;
+ stats->tx_dropped = tx_dropped;
+ }
+}
+EXPORT_SYMBOL(dev_txq_stats_fold);
+
+/**
* dev_get_stats - get network device statistics
* @dev: device to get statistics from
*
@@ -5182,25 +5208,9 @@ const struct net_device_stats *dev_get_stats(struct net_device *dev)
if (ops->ndo_get_stats)
return ops->ndo_get_stats(dev);
- else {
- unsigned long tx_bytes = 0, tx_packets = 0, tx_dropped = 0;
- struct net_device_stats *stats = &dev->stats;
- unsigned int i;
- struct netdev_queue *txq;
-
- for (i = 0; i < dev->num_tx_queues; i++) {
- txq = netdev_get_tx_queue(dev, i);
- tx_bytes += txq->tx_bytes;
- tx_packets += txq->tx_packets;
- tx_dropped += txq->tx_dropped;
- }
- if (tx_bytes || tx_packets || tx_dropped) {
- stats->tx_bytes = tx_bytes;
- stats->tx_packets = tx_packets;
- stats->tx_dropped = tx_dropped;
- }
- return stats;
- }
+
+ dev_txq_stats_fold(dev, &dev->stats);
+ return &dev->stats;
}
EXPORT_SYMBOL(dev_get_stats);
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