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r8169: add 64bit statistics.

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Switch to use ndo_get_stats64 to get 64bit statistics.
Two sync entries are used (one for Rx and one for Tx).

Signed-off-by: Junchang Wang <junchangwang@gmail.com>
Reviewed-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
This commit is contained in:
Junchang Wang 2012-03-04 23:30:32 +01:00 committed by Francois Romieu
parent 18f973af3e
commit 8027aa245b
1 changed files with 45 additions and 14 deletions
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59
drivers/net/ethernet/realtek/r8169.c
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@ -675,6 +675,12 @@ enum rtl_flag {
RTL_FLAG_MAX
};
struct rtl8169_stats {
u64 packets;
u64 bytes;
struct u64_stats_sync syncp;
};
struct rtl8169_private {
void __iomem *mmio_addr; /* memory map physical address */
struct pci_dev *pci_dev;
@ -687,6 +693,8 @@ struct rtl8169_private {
u32 cur_tx; /* Index into the Tx descriptor buffer of next Rx pkt. */
u32 dirty_rx;
u32 dirty_tx;
struct rtl8169_stats rx_stats;
struct rtl8169_stats tx_stats;
struct TxDesc *TxDescArray; /* 256-aligned Tx descriptor ring */
struct RxDesc *RxDescArray; /* 256-aligned Rx descriptor ring */
dma_addr_t TxPhyAddr;
@ -775,7 +783,9 @@ static void rtl_hw_start(struct net_device *dev);
static int rtl8169_close(struct net_device *dev);
static void rtl_set_rx_mode(struct net_device *dev);
static void rtl8169_tx_timeout(struct net_device *dev);
static struct net_device_stats *rtl8169_get_stats(struct net_device *dev);
static struct rtnl_link_stats64 *rtl8169_get_stats64(struct net_device *dev,
struct rtnl_link_stats64
*stats);
static int rtl8169_change_mtu(struct net_device *dev, int new_mtu);
static void rtl8169_rx_clear(struct rtl8169_private *tp);
static int rtl8169_poll(struct napi_struct *napi, int budget);
@ -3521,7 +3531,7 @@ static void rtl_disable_msi(struct pci_dev *pdev, struct rtl8169_private *tp)
static const struct net_device_ops rtl8169_netdev_ops = {
.ndo_open = rtl8169_open,
.ndo_stop = rtl8169_close,
.ndo_get_stats = rtl8169_get_stats,
.ndo_get_stats64 = rtl8169_get_stats64,
.ndo_start_xmit = rtl8169_start_xmit,
.ndo_tx_timeout = rtl8169_tx_timeout,
.ndo_validate_addr = eth_validate_addr,
@ -5658,8 +5668,10 @@ static void rtl_tx(struct net_device *dev, struct rtl8169_private *tp)
rtl8169_unmap_tx_skb(&tp->pci_dev->dev, tx_skb,
tp->TxDescArray + entry);
if (status & LastFrag) {
dev->stats.tx_packets++;
dev->stats.tx_bytes += tx_skb->skb->len;
u64_stats_update_begin(&tp->tx_stats.syncp);
tp->tx_stats.packets++;
tp->tx_stats.bytes += tx_skb->skb->len;
u64_stats_update_end(&tp->tx_stats.syncp);
dev_kfree_skb(tx_skb->skb);
tx_skb->skb = NULL;
}
@ -5807,8 +5819,10 @@ process_pkt:
napi_gro_receive(&tp->napi, skb);
dev->stats.rx_bytes += pkt_size;
dev->stats.rx_packets++;
u64_stats_update_begin(&tp->rx_stats.syncp);
tp->rx_stats.packets++;
tp->rx_stats.bytes += pkt_size;
u64_stats_update_end(&tp->rx_stats.syncp);
}
/* Work around for AMD plateform. */
@ -6069,21 +6083,38 @@ static void rtl_set_rx_mode(struct net_device *dev)
RTL_W32(RxConfig, tmp);
}
/**
* rtl8169_get_stats - Get rtl8169 read/write statistics
* @dev: The Ethernet Device to get statistics for
*
* Get TX/RX statistics for rtl8169
*/
static struct net_device_stats *rtl8169_get_stats(struct net_device *dev)
static struct rtnl_link_stats64 *
rtl8169_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
{
struct rtl8169_private *tp = netdev_priv(dev);
void __iomem *ioaddr = tp->mmio_addr;
unsigned int start;
if (netif_running(dev))
rtl8169_rx_missed(dev, ioaddr);
return &dev->stats;
do {
start = u64_stats_fetch_begin_bh(&tp->rx_stats.syncp);
stats->rx_packets = tp->rx_stats.packets;
stats->rx_bytes = tp->rx_stats.bytes;
} while (u64_stats_fetch_retry_bh(&tp->rx_stats.syncp, start));
do {
start = u64_stats_fetch_begin_bh(&tp->tx_stats.syncp);
stats->tx_packets = tp->tx_stats.packets;
stats->tx_bytes = tp->tx_stats.bytes;
} while (u64_stats_fetch_retry_bh(&tp->tx_stats.syncp, start));
stats->rx_dropped = dev->stats.rx_dropped;
stats->tx_dropped = dev->stats.tx_dropped;
stats->rx_length_errors = dev->stats.rx_length_errors;
stats->rx_errors = dev->stats.rx_errors;
stats->rx_crc_errors = dev->stats.rx_crc_errors;
stats->rx_fifo_errors = dev->stats.rx_fifo_errors;
stats->rx_missed_errors = dev->stats.rx_missed_errors;
return stats;
}
static void rtl8169_net_suspend(struct net_device *dev)