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Message-ID: <5100b2f8.1883650a.37e6.17b4@mx.google.com>
Date: Thu, 24 Jan 2013 00:05:04 -0400
From: Jamie Gloudon <jamie.gloudon@...il.com>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net, eric.dumazet@...il.com
Subject: [PATCH v2 net-next] via-rhine: add 64bit statistics.
Switch to use ndo_get_stats64 to get 64bit statistics.
Signed-off-by: Jamie Gloudon <jamie.gloudon@...il.com>
Tested-by: Jamie Gloudon <jamie.gloudon@...il.com>
---
drivers/net/ethernet/via/via-rhine.c | 47 ++++++++++++++++++++++++++++++------
1 file changed, 39 insertions(+), 8 deletions(-)
diff --git a/drivers/net/ethernet/via/via-rhine.c b/drivers/net/ethernet/via/via-rhine.c
index eab63e1..ec4a5e1 100644
--- a/drivers/net/ethernet/via/via-rhine.c
+++ b/drivers/net/ethernet/via/via-rhine.c
@@ -417,6 +417,12 @@ enum chip_cmd_bits {
Cmd1NoTxPoll=0x08, Cmd1Reset=0x80,
};
+struct rhine_stats {
+ u64 packets;
+ u64 bytes;
+ struct u64_stats_sync syncp;
+};
+
struct rhine_private {
/* Bit mask for configured VLAN ids */
unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
@@ -458,6 +464,8 @@ struct rhine_private {
unsigned int cur_rx, dirty_rx; /* Producer/consumer ring indices */
unsigned int cur_tx, dirty_tx;
unsigned int rx_buf_sz; /* Based on MTU+slack. */
+ struct rhine_stats rx_stats;
+ struct rhine_stats tx_stats;
u8 wolopts;
u8 tx_thresh, rx_thresh;
@@ -495,7 +503,8 @@ static irqreturn_t rhine_interrupt(int irq, void *dev_instance);
static void rhine_tx(struct net_device *dev);
static int rhine_rx(struct net_device *dev, int limit);
static void rhine_set_rx_mode(struct net_device *dev);
-static struct net_device_stats *rhine_get_stats(struct net_device *dev);
+static struct rtnl_link_stats64 *rhine_get_stats64(struct net_device *dev,
+ struct rtnl_link_stats64 *stats);
static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
static const struct ethtool_ops netdev_ethtool_ops;
static int rhine_close(struct net_device *dev);
@@ -842,7 +851,7 @@ static const struct net_device_ops rhine_netdev_ops = {
.ndo_open = rhine_open,
.ndo_stop = rhine_close,
.ndo_start_xmit = rhine_start_tx,
- .ndo_get_stats = rhine_get_stats,
+ .ndo_get_stats64 = rhine_get_stats64,
.ndo_set_rx_mode = rhine_set_rx_mode,
.ndo_change_mtu = eth_change_mtu,
.ndo_validate_addr = eth_validate_addr,
@@ -1790,8 +1799,11 @@ static void rhine_tx(struct net_device *dev)
dev->stats.collisions += txstatus & 0x0F;
netif_dbg(rp, tx_done, dev, "collisions: %1.1x:%1.1x\n",
(txstatus >> 3) & 0xF, txstatus & 0xF);
- dev->stats.tx_bytes += rp->tx_skbuff[entry]->len;
- dev->stats.tx_packets++;
+
+ u64_stats_update_begin(&rp->tx_stats.syncp);
+ rp->tx_stats.bytes += rp->tx_skbuff[entry]->len;
+ rp->tx_stats.packets++;
+ u64_stats_update_end(&rp->tx_stats.syncp);
}
/* Free the original skb. */
if (rp->tx_skbuff_dma[entry]) {
@@ -1923,8 +1935,11 @@ static int rhine_rx(struct net_device *dev, int limit)
if (unlikely(desc_length & DescTag))
__vlan_hwaccel_put_tag(skb, vlan_tci);
netif_receive_skb(skb);
- dev->stats.rx_bytes += pkt_len;
- dev->stats.rx_packets++;
+
+ u64_stats_update_begin(&rp->rx_stats.syncp);
+ rp->rx_stats.bytes += pkt_len;
+ rp->rx_stats.packets++;
+ u64_stats_update_end(&rp->rx_stats.syncp);
}
entry = (++rp->cur_rx) % RX_RING_SIZE;
rp->rx_head_desc = &rp->rx_ring[entry];
@@ -2019,15 +2034,31 @@ out_unlock:
mutex_unlock(&rp->task_lock);
}
-static struct net_device_stats *rhine_get_stats(struct net_device *dev)
+static struct rtnl_link_stats64 *
+rhine_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
{
struct rhine_private *rp = netdev_priv(dev);
+ unsigned int start;
spin_lock_bh(&rp->lock);
rhine_update_rx_crc_and_missed_errord(rp);
spin_unlock_bh(&rp->lock);
- return &dev->stats;
+ netdev_stats_to_stats64(stats, &dev->stats);
+
+ do {
+ start = u64_stats_fetch_begin_bh(&rp->rx_stats.syncp);
+ stats->rx_packets = rp->rx_stats.packets;
+ stats->rx_bytes = rp->rx_stats.bytes;
+ } while (u64_stats_fetch_retry_bh(&rp->rx_stats.syncp, start));
+
+ do {
+ start = u64_stats_fetch_begin_bh(&rp->tx_stats.syncp);
+ stats->tx_packets = rp->tx_stats.packets;
+ stats->tx_bytes = rp->tx_stats.bytes;
+ } while (u64_stats_fetch_retry_bh(&rp->tx_stats.syncp, start));
+
+ return stats;
}
static void rhine_set_rx_mode(struct net_device *dev)
--
1.7.12
--
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