| Proc statistic interface for venet [message #2581] |
Mon, 10 April 2006 17:48 |
Julian
Messages: 4
Registered: April 2006
Location: Darmstadt, Germany
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Junior Member |
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Hello,
i've already started a thread in the discussion forum about this patch
( http://forum.openvz.org/index.php?t=msg&th=452&start =0&)
This patch is going to create a new proc file named "vz/venetstat" which
provides
an direct interface to the _venet_devs statistic values. This can be
easily used to do traffic accounting.
I'm a little bit confused about the "disable_net" value. It seems to me
that it has been deleted in the
most up-to-date patch. Can you give me any information why it has been
deleted?
Has this patch a chance to be included in the official openvz kernel?
I'm also willing to write the documentation part for the user manual, if
this patch is being included.
I'm currently thinking about two other patches:
1. A "network quota" patch for the kernel and userspace tools
2. When VPS is rebooted a printk should be issued with the values of
venet counters
What do you think about it?
I'm relatively new in writing linux kernel code, so please have an extra
look on my code...
Best regards,
Julian Haupt
--- orig/linux-2.6.16/kernel/vecalls.c 2006-04-10 15:31:40.000000000 +0200
+++ linux-2.6.16/kernel/vecalls.c 2006-04-10 18:24:29.000000000 +0200
@@ -2981,6 +2981,60 @@
release: seq_release
};
+#if defined(CONFIG_VE_NETDEV) || defined(CONFIG_VE_NETDEV_MODULE)
+
+static int venetstat_seq_show(struct seq_file *m, void *v)
+{
+ struct ve_struct *ve = (struct ve_struct *)v;
+ struct ve_struct *calling_ve;
+ unsigned long rx_bytes, tx_bytes, rx_packets, tx_packets;
+
+ calling_ve = get_exec_env();
+
+ if (ve == ve_list_head ||
+ (!ve_is_super(calling_ve) && ve == calling_ve)) {
+ seq_printf(m, "%10s %10s %10s %10s %10s\n", "VEID", "rxbytes", "txbytes", "rxpackets", "txpackets");
+ }
+
+ if (ve_is_super(ve))
+ return 0;
+
+ rx_bytes = tx_bytes = rx_packets = tx_packets = 0;
+
+ if (ve->_venet_dev != NULL && ve->_venet_dev->get_stats) {
+ struct net_device_stats *stats = ve->_venet_dev->get_stats(ve->_venet_dev);
+ rx_bytes = stats->rx_bytes;
+ tx_bytes = stats->tx_bytes;
+ rx_packets = stats->rx_packets;
+ tx_packets = stats->tx_packets;
+ }
+
+ seq_printf(m, "%10u %10lu %10lu %10lu %10lu\n", ve->veid, rx_bytes, tx_bytes, rx_packets, tx_packets);
+
+ return 0;
+}
+
+static struct seq_operations venetstat_seq_op = {
+ start: ve_seq_start,
+ next: ve_seq_next,
+ stop: ve_seq_stop,
+ show: venetstat_seq_show
+};
+
+static int venetstat_open(struct inode *inode, struct file *file)
+{
+ return seq_open(file, &venetstat_seq_op);
+}
+
+static struct file_operations proc_venetstat_operations = {
+ open: venetstat_open,
+ read: seq_read,
+ llseek: seq_lseek,
+ release: seq_release
+};
+
+#endif
+
static int __init init_vecalls_proc(void)
{
struct proc_dir_entry *de;
@@ -2999,6 +3053,16 @@
else
printk(KERN_WARNING
"VZMON: can't make vestat proc entry\n");
+
+#if defined(CONFIG_VE_NETDEV) || defined(CONFIG_VE_NETDEV_MODULE)
+
+ de = create_proc_entry("vz/venetstat", S_IFREG | S_IRUSR, NULL);
+ if (de)
+ de->proc_fops = &proc_venetstat_operations;
+ else
+ printk(KERN_WARNING
+ "VZMON: can't make venetstat proc entry\n");
+#endif
de = create_proc_entry("vz/devperms", S_IFREG | S_IRUSR, NULL);
if (de)
@@ -3012,6 +3076,9 @@
static void fini_vecalls_proc(void)
{
remove_proc_entry("vz/devperms", NULL);
+#if defined(CONFIG_VE_NETDEV) || defined(CONFIG_VE_NETDEV_MODULE)
+ remove_proc_entry("vz/venetstat", NULL);
+#endif
remove_proc_entry("vz/vestat", NULL);
}
#else
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