explanation about /proc/net
Andy Green
andy at warmcat.com
Fri Sep 28 13:41:11 UTC 2007
Somebody in the thread at some point said:
> Hi all
>
> How can I find out the /proc/net info
>
> eg: softnet_stat is for what purpose
In the kernel sources
./Documentation/filesystems/proc.txt
contains some information on /proc/net goodies.
For offroad stuff like softnet_stat though, your best friend is grepping
the kernel sources
$ cat /proc/net/softnet_stat
0cd35244 00000000 00000f10 00000000 00000000 00000000 00000000 00000000
00000000
01bde35c 00000000 00000157 00000000 00000000 00000000 00000000 00000000
00000000
$ grep softnet_stat * -R
...
core/dev.c: if (!proc_net_fops_create("softnet_stat", S_IRUGO,
&softnet_seq_fops))
core/dev.c: proc_net_remove("softnet_stat");
./net/core/dev.c
static int softnet_seq_show(struct seq_file *seq, void *v)
{
struct netif_rx_stats *s = v;
seq_printf(seq, "%08x %08x %08x %08x %08x %08x %08x %08x %08x\n",
s->total, s->dropped, s->time_squeeze, 0,
0, 0, 0, 0, /* was fastroute */
s->cpu_collision );
return 0;
}
$ grep "struct netif_rx_stats" include/* -R
include/linux/netdevice.h:struct netif_rx_stats
include/linux/netdevice.h:DECLARE_PER_CPU(struct netif_rx_stats,
netdev_rx_stat);
struct netif_rx_stats
{
unsigned total;
unsigned dropped;
unsigned time_squeeze;
unsigned cpu_collision;
};
no comments...
-Andy
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