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Date: Fri, 4 Nov 2011 18:53:32 -0700
From: David Decotigny <david.decotigny@...gle.com>
To: netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: "David S. Miller" <davem@...emloft.net>,
Ian Campbell <ian.campbell@...rix.com>,
Eric Dumazet <eric.dumazet@...il.com>,
Jeff Kirsher <jeffrey.t.kirsher@...el.com>,
Jiri Pirko <jpirko@...hat.com>, Joe Perches <joe@...ches.com>,
Szymon Janc <szymon@...c.net.pl>,
David Decotigny <david.decotigny@...gle.com>
Subject: [PATCH net v3 8/9] forcedeth: 64-bit stats
This converts forcedeth stats to be 64-bits. It also improves
accounting for dropped rx frames.
Tested:
16-way SMP x86_64 ->
RX bytes:7244556582 (7.2 GB) TX bytes:181904254 (181.9 MB)
Signed-off-by: David Decotigny <david.decotigny@...gle.com>
---
drivers/net/ethernet/nvidia/forcedeth.c | 69 +++++++++++++++++++-----------
1 files changed, 44 insertions(+), 25 deletions(-)
diff --git a/drivers/net/ethernet/nvidia/forcedeth.c b/drivers/net/ethernet/nvidia/forcedeth.c
index 90cdf26..08c512b 100644
--- a/drivers/net/ethernet/nvidia/forcedeth.c
+++ b/drivers/net/ethernet/nvidia/forcedeth.c
@@ -799,6 +799,8 @@ struct fe_priv {
struct timer_list stats_poll;
u32 nic_poll_irq;
int rx_ring_size;
+ unsigned long stats_rx_dropped;
+ unsigned long stats_rx_missed_errors;
/* media detection workaround.
* Locking: Within irq hander or disable_irq+spin_lock(&np->lock);
@@ -821,6 +823,7 @@ struct fe_priv {
struct nv_skb_map *tx_change_owner;
struct nv_skb_map *tx_end_flip;
int tx_stop;
+ unsigned long stats_tx_dropped;
/* msi/msi-x fields */
u32 msi_flags;
@@ -1700,33 +1703,47 @@ static void nv_get_hw_stats(struct net_device *dev)
}
/*
- * nv_get_stats: dev->get_stats function
+ * nv_get_stats: dev->ndo_get_stats64 function
* Get latest stats value from the nic.
* Called with read_lock(&dev_base_lock) held for read -
* only synchronized against unregister_netdevice.
*/
-static struct net_device_stats *nv_get_stats(struct net_device *dev)
+static struct rtnl_link_stats64*
+nv_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *storage)
{
struct fe_priv *np = netdev_priv(dev);
/* If the nic supports hw counters then retrieve latest values */
- if (np->driver_data & (DEV_HAS_STATISTICS_V1|DEV_HAS_STATISTICS_V2|DEV_HAS_STATISTICS_V3)) {
+ if (np->driver_data & (DEV_HAS_STATISTICS_V1
+ | DEV_HAS_STATISTICS_V2
+ | DEV_HAS_STATISTICS_V3)) {
nv_get_hw_stats(dev);
- /* copy to net_device stats */
- dev->stats.tx_packets = np->estats.tx_packets;
- dev->stats.rx_bytes = np->estats.rx_bytes;
- dev->stats.tx_bytes = np->estats.tx_bytes;
- dev->stats.tx_fifo_errors = np->estats.tx_fifo_errors;
- dev->stats.tx_carrier_errors = np->estats.tx_carrier_errors;
- dev->stats.rx_crc_errors = np->estats.rx_crc_errors;
- dev->stats.rx_over_errors = np->estats.rx_over_errors;
- dev->stats.rx_fifo_errors = np->estats.rx_drop_frame;
- dev->stats.rx_errors = np->estats.rx_errors_total;
- dev->stats.tx_errors = np->estats.tx_errors_total;
- }
-
- return &dev->stats;
+ /* generic stats */
+ storage->rx_packets = np->estats.rx_packets;
+ storage->tx_packets = np->estats.tx_packets;
+ storage->rx_bytes = np->estats.rx_bytes;
+ storage->tx_bytes = np->estats.tx_bytes;
+ storage->rx_errors = np->estats.rx_errors_total;
+ storage->tx_errors = np->estats.tx_errors_total;
+ storage->rx_dropped = np->stats_rx_dropped;
+ storage->tx_dropped = np->stats_tx_dropped;
+ storage->multicast = np->estats.rx_multicast;
+
+ /* detailed rx_errors */
+ storage->rx_length_errors = np->estats.rx_length_error;
+ storage->rx_over_errors = np->estats.rx_over_errors;
+ storage->rx_crc_errors = np->estats.rx_crc_errors;
+ storage->rx_frame_errors = np->estats.rx_frame_align_error;
+ storage->rx_fifo_errors = np->estats.rx_drop_frame;
+ storage->rx_missed_errors = np->stats_rx_missed_errors;
+
+ /* detailed tx_errors */
+ storage->tx_carrier_errors = np->estats.tx_carrier_errors;
+ storage->tx_fifo_errors = np->estats.tx_fifo_errors;
+ }
+
+ return storage;
}
/*
@@ -1759,8 +1776,10 @@ static int nv_alloc_rx(struct net_device *dev)
np->put_rx.orig = np->first_rx.orig;
if (unlikely(np->put_rx_ctx++ == np->last_rx_ctx))
np->put_rx_ctx = np->first_rx_ctx;
- } else
+ } else {
+ np->stats_rx_dropped++;
return 1;
+ }
}
return 0;
}
@@ -1791,8 +1810,10 @@ static int nv_alloc_rx_optimized(struct net_device *dev)
np->put_rx.ex = np->first_rx.ex;
if (unlikely(np->put_rx_ctx++ == np->last_rx_ctx))
np->put_rx_ctx = np->first_rx_ctx;
- } else
+ } else {
+ np->stats_rx_dropped++;
return 1;
+ }
}
return 0;
}
@@ -1928,7 +1949,7 @@ static void nv_drain_tx(struct net_device *dev)
np->tx_ring.ex[i].buflow = 0;
}
if (nv_release_txskb(np, &np->tx_skb[i]))
- dev->stats.tx_dropped++;
+ np->stats_tx_dropped++;
np->tx_skb[i].dma = 0;
np->tx_skb[i].dma_len = 0;
np->tx_skb[i].dma_single = 0;
@@ -2651,7 +2672,7 @@ static int nv_rx_process(struct net_device *dev, int limit)
/* the rest are hard errors */
else {
if (flags & NV_RX_MISSEDFRAME)
- dev->stats.rx_missed_errors++;
+ np->stats_rx_missed_errors++;
dev_kfree_skb(skb);
goto next_pkt;
}
@@ -2694,7 +2715,6 @@ static int nv_rx_process(struct net_device *dev, int limit)
skb_put(skb, len);
skb->protocol = eth_type_trans(skb, dev);
napi_gro_receive(&np->napi, skb);
- dev->stats.rx_packets++;
next_pkt:
if (unlikely(np->get_rx.orig++ == np->last_rx.orig))
np->get_rx.orig = np->first_rx.orig;
@@ -2777,7 +2797,6 @@ static int nv_rx_process_optimized(struct net_device *dev, int limit)
__vlan_hwaccel_put_tag(skb, vid);
}
napi_gro_receive(&np->napi, skb);
- dev->stats.rx_packets++;
} else {
dev_kfree_skb(skb);
}
@@ -5199,7 +5218,7 @@ static int nv_close(struct net_device *dev)
static const struct net_device_ops nv_netdev_ops = {
.ndo_open = nv_open,
.ndo_stop = nv_close,
- .ndo_get_stats = nv_get_stats,
+ .ndo_get_stats64 = nv_get_stats64,
.ndo_start_xmit = nv_start_xmit,
.ndo_tx_timeout = nv_tx_timeout,
.ndo_change_mtu = nv_change_mtu,
@@ -5216,7 +5235,7 @@ static const struct net_device_ops nv_netdev_ops = {
static const struct net_device_ops nv_netdev_ops_optimized = {
.ndo_open = nv_open,
.ndo_stop = nv_close,
- .ndo_get_stats = nv_get_stats,
+ .ndo_get_stats64 = nv_get_stats64,
.ndo_start_xmit = nv_start_xmit_optimized,
.ndo_tx_timeout = nv_tx_timeout,
.ndo_change_mtu = nv_change_mtu,
--
1.7.3.1
--
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