From 6f0bee16d0840c272229f2038a23a9a02dfc803d Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Wed, 18 Aug 2010 03:13:08 +0000 Subject: [PATCH] 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 Signed-off-by: David S. Miller --- drivers/net/slip.c | 50 +++++++++++++++++++++++----------------------- 1 file 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 */ -- 2.39.2