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authorEric Dumazet <eric.dumazet@gmail.com>2010-08-18 03:13:08 +0000
committerDavid S. Miller <davem@davemloft.net>2010-08-19 00:16:52 -0700
commit6f0bee16d0840c272229f2038a23a9a02dfc803d (patch)
tree67b5147d41d3a9d0dff650c487ea9256c6435c85 /drivers/net/slip.c
parentdd57f970f91e2371040db709b3731ac34e43ccdb (diff)
downloadlinux-6f0bee16d0840c272229f2038a23a9a02dfc803d.tar.bz2
slip: fix get_stats() method
Use integrated net_device_stats instead of a static one, and make sure no transient values are feeded. ndo_get_stats() can be called by concurrent cpus. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/slip.c')
-rw-r--r--drivers/net/slip.c50
1 files changed, 25 insertions, 25 deletions
diff --git a/drivers/net/slip.c b/drivers/net/slip.c
index fa434fb8fb7c..d5a36f5417cc 100644
--- a/drivers/net/slip.c
+++ b/drivers/net/slip.c
@@ -561,36 +561,36 @@ static int sl_change_mtu(struct net_device *dev, int new_mtu)
static struct net_device_stats *
sl_get_stats(struct net_device *dev)
{
- static struct net_device_stats stats;
+ struct net_device_stats *stats = &dev->stats;
struct slip *sl = netdev_priv(dev);
+ unsigned long c_rx_dropped = 0;
#ifdef SL_INCLUDE_CSLIP
- struct slcompress *comp;
-#endif
+ unsigned long c_rx_fifo_errors = 0;
+ unsigned long c_tx_fifo_errors = 0;
+ unsigned long c_collisions = 0;
+ struct slcompress *comp = sl->slcomp;
- memset(&stats, 0, sizeof(struct net_device_stats));
-
- stats.rx_packets = sl->rx_packets;
- stats.tx_packets = sl->tx_packets;
- stats.rx_bytes = sl->rx_bytes;
- stats.tx_bytes = sl->tx_bytes;
- stats.rx_dropped = sl->rx_dropped;
- stats.tx_dropped = sl->tx_dropped;
- stats.tx_errors = sl->tx_errors;
- stats.rx_errors = sl->rx_errors;
- stats.rx_over_errors = sl->rx_over_errors;
-#ifdef SL_INCLUDE_CSLIP
- stats.rx_fifo_errors = sl->rx_compressed;
- stats.tx_fifo_errors = sl->tx_compressed;
- stats.collisions = sl->tx_misses;
- comp = sl->slcomp;
if (comp) {
- stats.rx_fifo_errors += comp->sls_i_compressed;
- stats.rx_dropped += comp->sls_i_tossed;
- stats.tx_fifo_errors += comp->sls_o_compressed;
- stats.collisions += comp->sls_o_misses;
+ c_rx_fifo_errors = comp->sls_i_compressed;
+ c_rx_dropped = comp->sls_i_tossed;
+ c_tx_fifo_errors = comp->sls_o_compressed;
+ c_collisions = comp->sls_o_misses;
}
-#endif /* CONFIG_INET */
- return (&stats);
+ stats->rx_fifo_errors = sl->rx_compressed + c_rx_fifo_errors;
+ stats->tx_fifo_errors = sl->tx_compressed + c_tx_fifo_errors;
+ stats->collisions = sl->tx_misses + c_collisions;
+#endif
+
+ stats->rx_packets = sl->rx_packets;
+ stats->tx_packets = sl->tx_packets;
+ stats->rx_bytes = sl->rx_bytes;
+ stats->tx_bytes = sl->tx_bytes;
+ stats->rx_dropped = sl->rx_dropped + c_rx_dropped;
+ stats->tx_dropped = sl->tx_dropped;
+ stats->tx_errors = sl->tx_errors;
+ stats->rx_errors = sl->rx_errors;
+ stats->rx_over_errors = sl->rx_over_errors;
+ return stats;
}
/* Netdevice register callback */