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Date: Mon, 11 Apr 2016 17:10:16 +0900
From: Taku Izumi <izumi.taku@...fujitsu.com>
To: davem@...emloft.net, netdev@...r.kernel.org
Cc: Taku Izumi <izumi.taku@...fujitsu.com>
Subject: [PATCH net-next 04/11] fjes: Add debugfs entry for statistics
This patch introduces debugfs entry named "statistics"
for statistics information.
You can get net_stats information by reading
/sys/kernel/debug/fjes/fjes.N/statistics file.
This is useful for debugging.
Signed-off-by: Taku Izumi <izumi.taku@...fujitsu.com>
---
drivers/net/fjes/fjes_debugfs.c | 72 +++++++++++++++++++++++++++++++++++++++++
1 file changed, 72 insertions(+)
diff --git a/drivers/net/fjes/fjes_debugfs.c b/drivers/net/fjes/fjes_debugfs.c
index d2fd892..b0807c2 100644
--- a/drivers/net/fjes/fjes_debugfs.c
+++ b/drivers/net/fjes/fjes_debugfs.c
@@ -31,6 +31,72 @@
static struct dentry *fjes_debug_root;
+static int fjes_dbg_stats_show(struct seq_file *m, void *v)
+{
+ struct fjes_adapter *adapter = m->private;
+ struct fjes_hw *hw = &adapter->hw;
+ int max_epid = hw->max_epid;
+ int my_epid = hw->my_epid;
+ int epidx;
+
+ seq_printf(m, "%41s", " ");
+ for (epidx = 0; epidx < max_epid; epidx++)
+ seq_printf(m, "%10s%d",
+ my_epid == epidx ? "(self)EP#" : "EP#", epidx);
+ seq_printf(m, "\n");
+
+#define FJES_DEBUGFS_NET_STATS_ENTRY(X) do { \
+ seq_printf(m, "%-41s", #X); \
+ for (epidx = 0; epidx < max_epid; epidx++) { \
+ if (epidx == my_epid) \
+ seq_printf(m, " -"); \
+ else \
+ seq_printf(m, " %10llu", \
+ hw->ep_shm_info[epidx].net_stats.X); \
+ } \
+ seq_printf(m, "\n"); \
+} while (0)
+
+ FJES_DEBUGFS_NET_STATS_ENTRY(rx_packets);
+ FJES_DEBUGFS_NET_STATS_ENTRY(tx_packets);
+ FJES_DEBUGFS_NET_STATS_ENTRY(rx_bytes);
+ FJES_DEBUGFS_NET_STATS_ENTRY(tx_bytes);
+ FJES_DEBUGFS_NET_STATS_ENTRY(rx_errors);
+ FJES_DEBUGFS_NET_STATS_ENTRY(tx_errors);
+ FJES_DEBUGFS_NET_STATS_ENTRY(rx_dropped);
+ FJES_DEBUGFS_NET_STATS_ENTRY(tx_dropped);
+ FJES_DEBUGFS_NET_STATS_ENTRY(multicast);
+ FJES_DEBUGFS_NET_STATS_ENTRY(collisions);
+ FJES_DEBUGFS_NET_STATS_ENTRY(rx_length_errors);
+ FJES_DEBUGFS_NET_STATS_ENTRY(rx_over_errors);
+ FJES_DEBUGFS_NET_STATS_ENTRY(rx_crc_errors);
+ FJES_DEBUGFS_NET_STATS_ENTRY(rx_frame_errors);
+ FJES_DEBUGFS_NET_STATS_ENTRY(rx_fifo_errors);
+ FJES_DEBUGFS_NET_STATS_ENTRY(rx_missed_errors);
+ FJES_DEBUGFS_NET_STATS_ENTRY(tx_aborted_errors);
+ FJES_DEBUGFS_NET_STATS_ENTRY(tx_carrier_errors);
+ FJES_DEBUGFS_NET_STATS_ENTRY(tx_fifo_errors);
+ FJES_DEBUGFS_NET_STATS_ENTRY(tx_heartbeat_errors);
+ FJES_DEBUGFS_NET_STATS_ENTRY(tx_window_errors);
+ FJES_DEBUGFS_NET_STATS_ENTRY(rx_compressed);
+ FJES_DEBUGFS_NET_STATS_ENTRY(tx_compressed);
+
+ return 0;
+}
+
+static int fjes_dbg_stats_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, fjes_dbg_stats_show, inode->i_private);
+}
+
+static const struct file_operations fjes_dbg_stats_fops = {
+ .owner = THIS_MODULE,
+ .open = fjes_dbg_stats_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
static int fjes_dbg_status_show(struct seq_file *m, void *v)
{
struct fjes_adapter *adapter = m->private;
@@ -89,6 +155,12 @@ void fjes_dbg_adapter_init(struct fjes_adapter *adapter)
if (!pfile)
dev_err(&adapter->plat_dev->dev,
"debugfs status for %s failed\n", name);
+
+ pfile = debugfs_create_file("statistics", 0444, adapter->dbg_adapter,
+ adapter, &fjes_dbg_stats_fops);
+ if (!pfile)
+ dev_err(&adapter->plat_dev->dev,
+ "debugfs status for %s failed\n", name);
}
void fjes_dbg_adapter_exit(struct fjes_adapter *adapter)
--
2.4.3
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