This patch adds the ethtool -S (show statistics) feature to the
Spidernet ethernet driver. I have tested it extensively and believe it
is ready to be applied.
Signed-off-by: James K Lewis
---
drivers/net/spider_net.c | 10 ++
drivers/net/spider_net.h | 11 ++-
drivers/net/spider_net_ethtool.c | 56
+++
3 files changed, 75 insertions(+), 2 deletions(-)
Index: linux-2.6.18-rc2/drivers/net/spider_net.c
===
--- linux-2.6.18-rc2.orig/drivers/net/spider_net.c 2006-09-05
17:56:19.0 -0500
+++ linux-2.6.18-rc2/drivers/net/spider_net.c 2006-09-20
14:03:54.0 -0500
@@ -472,6 +472,7 @@ spider_net_prepare_rx_descr(struct spide
if (!descr->skb) {
if (netif_msg_rx_err(card) && net_ratelimit())
pr_err("Not enough memory to allocate rx buffer\n");
+ card->spider_stats.alloc_rx_skb_error++;
return -ENOMEM;
}
descr->buf_size = bufsize;
@@ -492,6 +493,7 @@ spider_net_prepare_rx_descr(struct spide
dev_kfree_skb_any(descr->skb);
if (netif_msg_rx_err(card) && net_ratelimit())
pr_err("Could not iommu-map rx buffer\n");
+ card->spider_stats.rx_iommu_map_error++;
descr->dmac_cmd_status = SPIDER_NET_DESCR_NOT_IN_USE;
} else {
descr->dmac_cmd_status = SPIDER_NET_DESCR_CARDOWNED |
@@ -721,6 +723,7 @@ spider_net_prepare_tx_descr(struct spide
if (netif_msg_tx_err(card) && net_ratelimit())
pr_err("could not iommu-map packet (%p, %i). "
"Dropping packet\n", skb->data, skb->len);
+ card->spider_stats.tx_iommu_map_error++;
return -ENOMEM;
}
@@ -942,6 +945,7 @@ spider_net_xmit(struct sk_buff *skb, str
}
if (spider_net_get_descr_status(descr) != SPIDER_NET_DESCR_NOT_IN_USE)
{
+ card->netdev_stats.tx_dropped++;
result = NETDEV_TX_LOCKED;
netif_stop_queue(netdev);
goto out;
@@ -1047,6 +1051,7 @@ spider_net_pass_skb_up(struct spider_net
pr_err("error in received descriptor found, "
"data_status=x%08x, data_error=x%08x\n",
data_status, data_error);
+ card->spider_stats.rx_desc_error++;
return 0;
}
@@ -1144,9 +1149,11 @@ spider_net_decode_one_descr(struct spide
if ( (status != SPIDER_NET_DESCR_COMPLETE) &&
(status != SPIDER_NET_DESCR_FRAME_END) ) {
- if (netif_msg_rx_err(card))
+ if (netif_msg_rx_err(card)) {
pr_err("%s: RX descriptor with state %d\n",
card->netdev->name, status);
+ card->spider_stats.rx_desc_unk_state++;
+ }
goto refill;
}
@@ -2112,6 +2119,7 @@ spider_net_tx_timeout(struct net_device
schedule_work(&card->tx_timeout_task);
else
atomic_dec(&card->tx_timeout_task_counter);
+ card->spider_stats.tx_timeouts++;
}
/**
Index: linux-2.6.18-rc2/drivers/net/spider_net.h
===
--- linux-2.6.18-rc2.orig/drivers/net/spider_net.h 2006-09-07
17:45:15.0 -0500
+++ linux-2.6.18-rc2/drivers/net/spider_net.h 2006-09-20
14:02:10.0 -0500
@@ -438,6 +438,15 @@ struct spider_net_options {
NETIF_MSG_HW | \
NETIF_MSG_WOL )
+struct spider_net_extra_stats {
+ unsigned long rx_desc_error;
+ unsigned long tx_timeouts;
+ unsigned long alloc_rx_skb_error;
+ unsigned long rx_iommu_map_error;
+ unsigned long tx_iommu_map_error;
+ unsigned long rx_desc_unk_state;
+};
+
struct spider_net_card {
struct net_device *netdev;
struct pci_dev *pdev;
@@ -464,9 +473,9 @@ struct spider_net_card {
/* for ethtool */
int msg_enable;
-
int rx_desc;
int tx_desc;
+ struct spider_net_extra_stats spider_stats;
struct spider_net_descr descr[0];
};
Index: linux-2.6.18-rc2/drivers/net/spider_net_ethtool.c
===
--- linux-2.6.18-rc2.orig/drivers/net/spider_net_ethtool.c 2006-08-23
19:01:02.0 -0500
+++ linux-2.6.18-rc2/drivers/net/spider_net_ethtool.c 2006-09-20
14:06:28.0 -0500
@@ -27,6 +27,27 @@
#include "spider_net.h"
+
+#define SPIDER_NET_NUM_STATS 13
+
+static struct {
+ const char str[ETH_GSTRING_LEN];
+} ethtool_stats_keys[] = {
+ { "tx_packets" },
+ { "tx_bytes" },
+ { "rx_packets" },
+ { "rx_bytes" },
+
