Release 4.14 arch/s390/appldata/appldata_net_sum.c
/*
* Data gathering module for Linux-VM Monitor Stream, Stage 1.
* Collects accumulated network statistics (Packets received/transmitted,
* dropped, errors, ...).
*
* Copyright IBM Corp. 2003, 2006
*
* Author: Gerald Schaefer <gerald.schaefer@de.ibm.com>
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/kernel_stat.h>
#include <linux/netdevice.h>
#include <net/net_namespace.h>
#include "appldata.h"
/*
* Network data
*
* This is accessed as binary data by z/VM. If changes to it can't be avoided,
* the structure version (product ID, see appldata_base.c) needs to be changed
* as well and all documentation and z/VM applications using it must be updated.
*
* The record layout is documented in the Linux for zSeries Device Drivers
* book:
* http://oss.software.ibm.com/developerworks/opensource/linux390/index.shtml
*/
struct appldata_net_sum_data {
u64 timestamp;
u32 sync_count_1; /* after VM collected the record data, */
u32 sync_count_2; /* sync_count_1 and sync_count_2 should be the
same. If not, the record has been updated on
the Linux side while VM was collecting the
(possibly corrupt) data */
u32 nr_interfaces; /* nr. of network interfaces being monitored */
u32 padding; /* next value is 64-bit aligned, so these */
/* 4 byte would be padded out by compiler */
u64 rx_packets; /* total packets received */
u64 tx_packets; /* total packets transmitted */
u64 rx_bytes; /* total bytes received */
u64 tx_bytes; /* total bytes transmitted */
u64 rx_errors; /* bad packets received */
u64 tx_errors; /* packet transmit problems */
u64 rx_dropped; /* no space in linux buffers */
u64 tx_dropped; /* no space available in linux */
u64 collisions; /* collisions while transmitting */
} __packed;
/*
* appldata_get_net_sum_data()
*
* gather accumulated network statistics
*/
static void appldata_get_net_sum_data(void *data)
{
int i;
struct appldata_net_sum_data *net_data;
struct net_device *dev;
unsigned long rx_packets, tx_packets, rx_bytes, tx_bytes, rx_errors,
tx_errors, rx_dropped, tx_dropped, collisions;
net_data = data;
net_data->sync_count_1++;
i = 0;
rx_packets = 0;
tx_packets = 0;
rx_bytes = 0;
tx_bytes = 0;
rx_errors = 0;
tx_errors = 0;
rx_dropped = 0;
tx_dropped = 0;
collisions = 0;
rcu_read_lock();
for_each_netdev_rcu(&init_net, dev) {
const struct rtnl_link_stats64 *stats;
struct rtnl_link_stats64 temp;
stats = dev_get_stats(dev, &temp);
rx_packets += stats->rx_packets;
tx_packets += stats->tx_packets;
rx_bytes += stats->rx_bytes;
tx_bytes += stats->tx_bytes;
rx_errors += stats->rx_errors;
tx_errors += stats->tx_errors;
rx_dropped += stats->rx_dropped;
tx_dropped += stats->tx_dropped;
collisions += stats->collisions;
i++;
}
rcu_read_unlock();
net_data->nr_interfaces = i;
net_data->rx_packets = rx_packets;
net_data->tx_packets = tx_packets;
net_data->rx_bytes = rx_bytes;
net_data->tx_bytes = tx_bytes;
net_data->rx_errors = rx_errors;
net_data->tx_errors = tx_errors;
net_data->rx_dropped = rx_dropped;
net_data->tx_dropped = tx_dropped;
net_data->collisions = collisions;
net_data->timestamp = get_tod_clock();
net_data->sync_count_2++;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Andrew Morton | 228 | 89.41% | 1 | 12.50% |
Heiko Carstens | 9 | 3.53% | 2 | 25.00% |
Stephen Hemminger | 7 | 2.75% | 2 | 25.00% |
Eric Dumazet | 6 | 2.35% | 1 | 12.50% |
Pavel Emelyanov | 3 | 1.18% | 1 | 12.50% |
Eric W. Biedermann | 2 | 0.78% | 1 | 12.50% |
Total | 255 | 100.00% | 8 | 100.00% |
static struct appldata_ops ops = {
.name = "net_sum",
.record_nr = APPLDATA_RECORD_NET_SUM_ID,
.size = sizeof(struct appldata_net_sum_data),
.callback = &appldata_get_net_sum_data,
.owner = THIS_MODULE,
.mod_lvl = {0xF0, 0xF0}, /* EBCDIC "00" */
};
/*
* appldata_net_init()
*
* init data, register ops
*/
static int __init appldata_net_init(void)
{
int ret;
ops.data = kzalloc(sizeof(struct appldata_net_sum_data), GFP_KERNEL);
if (!ops.data)
return -ENOMEM;
ret = appldata_register_ops(&ops);
if (ret)
kfree(ops.data);
return ret;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Sebastian Ott | 44 | 73.33% | 1 | 33.33% |
Andrew Morton | 15 | 25.00% | 1 | 33.33% |
Gerald Schaefer | 1 | 1.67% | 1 | 33.33% |
Total | 60 | 100.00% | 3 | 100.00% |
/*
* appldata_net_exit()
*
* unregister ops
*/
static void __exit appldata_net_exit(void)
{
appldata_unregister_ops(&ops);
kfree(ops.data);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Andrew Morton | 15 | 68.18% | 1 | 50.00% |
Sebastian Ott | 7 | 31.82% | 1 | 50.00% |
Total | 22 | 100.00% | 2 | 100.00% |
module_init(appldata_net_init);
module_exit(appldata_net_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Gerald Schaefer");
MODULE_DESCRIPTION("Linux-VM Monitor Stream, accumulated network statistics");
Overall Contributors
Person | Tokens | Prop | Commits | CommitProp |
Andrew Morton | 402 | 80.72% | 2 | 15.38% |
Sebastian Ott | 52 | 10.44% | 1 | 7.69% |
Gerald Schaefer | 13 | 2.61% | 2 | 15.38% |
Heiko Carstens | 10 | 2.01% | 3 | 23.08% |
Stephen Hemminger | 7 | 1.41% | 2 | 15.38% |
Eric Dumazet | 6 | 1.20% | 1 | 7.69% |
Eric W. Biedermann | 5 | 1.00% | 1 | 7.69% |
Pavel Emelyanov | 3 | 0.60% | 1 | 7.69% |
Total | 498 | 100.00% | 13 | 100.00% |
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