ixgbe: fix stats handling

[net-next-2.6.git] / drivers / net / ixgbe / ixgbe_main.c

diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
index 56f6b80e1084493ed76ea91b1a2c57f9ed54aeb3..f85631263af8573f7f0ea96ac63e961abebe225b 100644 (file)
--- a/drivers/net/ixgbe/ixgbe_main.c
+++ b/drivers/net/ixgbe/ixgbe_main.c
@@ -824,8 +824,10 @@ static bool ixgbe_clean_tx_irq(struct ixgbe_q_vector *q_vector,
 
        tx_ring->total_bytes += total_bytes;
        tx_ring->total_packets += total_packets;
+       u64_stats_update_begin(&tx_ring->syncp);
        tx_ring->stats.packets += total_packets;
        tx_ring->stats.bytes += total_bytes;
+       u64_stats_update_end(&tx_ring->syncp);
        return count < tx_ring->work_limit;
 }
 
@@ -1168,7 +1170,6 @@ static bool ixgbe_clean_rx_irq(struct ixgbe_q_vector *q_vector,
                               int *work_done, int work_to_do)
 {
        struct ixgbe_adapter *adapter = q_vector->adapter;
-       struct net_device *netdev = adapter->netdev;
        struct pci_dev *pdev = adapter->pdev;
        union ixgbe_adv_rx_desc *rx_desc, *next_rxd;
        struct ixgbe_rx_buffer *rx_buffer_info, *next_buffer;
@@ -1294,8 +1295,10 @@ static bool ixgbe_clean_rx_irq(struct ixgbe_q_vector *q_vector,
                                        rx_ring->rsc_count++;
                                rx_ring->rsc_flush++;
                        }
+                       u64_stats_update_begin(&rx_ring->syncp);
                        rx_ring->stats.packets++;
                        rx_ring->stats.bytes += skb->len;
+                       u64_stats_update_end(&rx_ring->syncp);
                } else {
                        if (rx_ring->flags & IXGBE_RING_RX_PS_ENABLED) {
                                rx_buffer_info->skb = next_buffer->skb;
@@ -1371,8 +1374,6 @@ next_desc:
 
        rx_ring->total_packets += total_rx_packets;
        rx_ring->total_bytes += total_rx_bytes;
-       netdev->stats.rx_bytes += total_rx_bytes;
-       netdev->stats.rx_packets += total_rx_packets;
 
        return cleaned;
 }
@@ -6542,6 +6543,38 @@ static void ixgbe_netpoll(struct net_device *netdev)
 }
 #endif
 
+static struct rtnl_link_stats64 *ixgbe_get_stats64(struct net_device *netdev,
+                                                  struct rtnl_link_stats64 *stats)
+{
+       struct ixgbe_adapter *adapter = netdev_priv(netdev);
+       int i;
+
+       /* accurate rx/tx bytes/packets stats */
+       dev_txq_stats_fold(netdev, stats);
+       for (i = 0; i < adapter->num_rx_queues; i++) {
+               struct ixgbe_ring *ring = adapter->rx_ring[i];
+               u64 bytes, packets;
+               unsigned int start;
+
+               do {
+                       start = u64_stats_fetch_begin_bh(&ring->syncp);
+                       packets = ring->stats.packets;
+                       bytes   = ring->stats.bytes;
+               } while (u64_stats_fetch_retry_bh(&ring->syncp, start));
+               stats->rx_packets += packets;
+               stats->rx_bytes   += bytes;
+       }
+
+       /* following stats updated by ixgbe_watchdog_task() */
+       stats->multicast        = netdev->stats.multicast;
+       stats->rx_errors        = netdev->stats.rx_errors;
+       stats->rx_length_errors = netdev->stats.rx_length_errors;
+       stats->rx_crc_errors    = netdev->stats.rx_crc_errors;
+       stats->rx_missed_errors = netdev->stats.rx_missed_errors;
+       return stats;
+}
+
+
 static const struct net_device_ops ixgbe_netdev_ops = {
        .ndo_open               = ixgbe_open,
        .ndo_stop               = ixgbe_close,
@@ -6560,6 +6593,7 @@ static const struct net_device_ops ixgbe_netdev_ops = {
        .ndo_set_vf_vlan        = ixgbe_ndo_set_vf_vlan,
        .ndo_set_vf_tx_rate     = ixgbe_ndo_set_vf_bw,
        .ndo_get_vf_config      = ixgbe_ndo_get_vf_config,
+       .ndo_get_stats64        = ixgbe_get_stats64,
 #ifdef CONFIG_NET_POLL_CONTROLLER
        .ndo_poll_controller    = ixgbe_netpoll,
 #endif