/*
* INET An implementation of the TCP/IP protocol suite for the LINUX
* operating system. INET is implemented using the BSD Socket
* interface as the means of communication with the user level.
*
* This file implements the various access functions for the
* PROC file system. This is very similar to the IPv4 version,
* except it reports the sockets in the INET6 address family.
*
* Version: $Id: proc.c,v 1.17 2002/02/01 22:01:04 davem Exp $
*
* Authors: David S. Miller (davem@caip.rutgers.edu)
* YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#include <linux/config.h>
#include <linux/sched.h>
#include <linux/socket.h>
#include <linux/net.h>
#include <linux/ipv6.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/stddef.h>
#include <net/sock.h>
#include <net/tcp.h>
#include <net/transp_v6.h>
#include <net/ipv6.h>
#ifdef CONFIG_PROC_FS
static struct proc_dir_entry *proc_net_devsnmp6;
static int fold_prot_inuse(struct proto *proto)
{
int res = 0;
int cpu;
for (cpu=0; cpu<NR_CPUS; cpu++)
res += proto->stats[cpu].inuse;
return res;
}
static int sockstat6_seq_show(struct seq_file *seq, void *v)
{
seq_printf(seq, "TCP6: inuse %d\n",
fold_prot_inuse(&tcpv6_prot));
seq_printf(seq, "UDP6: inuse %d\n",
fold_prot_inuse(&udpv6_prot));
seq_printf(seq, "RAW6: inuse %d\n",
fold_prot_inuse(&rawv6_prot));
seq_printf(seq, "FRAG6: inuse %d memory %d\n",
ip6_frag_nqueues, atomic_read(&ip6_frag_mem));
return 0;
}
struct snmp6_item
{
char *name;
int offset;
};
#define SNMP6_SENTINEL { .name = NULL, .offset = 0 }
static struct snmp6_item snmp6_ipv6_list[] = {
/* ipv6 mib according to RFC 2465 */
#define SNMP6_GEN(x) { .name = #x , .offset = offsetof(struct ipv6_mib, x) }
SNMP6_GEN(Ip6InReceives),
SNMP6_GEN(Ip6InHdrErrors),
SNMP6_GEN(Ip6InTooBigErrors),
SNMP6_GEN(Ip6InNoRoutes),
SNMP6_GEN(Ip6InAddrErrors),
SNMP6_GEN(Ip6InUnknownProtos),
SNMP6_GEN(Ip6InTruncatedPkts),
SNMP6_GEN(Ip6InDiscards),
SNMP6_GEN(Ip6InDelivers),
SNMP6_GEN(Ip6OutForwDatagrams),
SNMP6_GEN(Ip6OutRequests),
SNMP6_GEN(Ip6OutDiscards),
SNMP6_GEN(Ip6OutNoRoutes),
SNMP6_GEN(Ip6ReasmTimeout),
SNMP6_GEN(Ip6ReasmReqds),
SNMP6_GEN(Ip6ReasmOKs),
SNMP6_GEN(Ip6ReasmFails),
SNMP6_GEN(Ip6FragOKs),
SNMP6_GEN(Ip6FragFails),
SNMP6_GEN(Ip6FragCreates),
SNMP6_GEN(Ip6InMcastPkts),
SNMP6_GEN(Ip6OutMcastPkts),
#undef SNMP6_GEN
SNMP6_SENTINEL
};
static struct snmp6_item snmp6_icmp6_list[] = {
/* icmpv6 mib according to RFC 2466
Exceptions: {In|Out}AdminProhibs are removed, because I see
no good reasons to account them separately
of another dest.unreachs.
OutErrs is zero identically.
OutEchos too.
OutRouterAdvertisements too.
OutGroupMembQueries too.
*/
#define SNMP6_GEN(x) { .name = #x , .offset = offsetof(struct icmpv6_mib, x) }
SNMP6_GEN(Icmp6InMsgs),
SNMP6_GEN(Icmp6InErrors),
SNMP6_GEN(Icmp6InDestUnreachs),
SNMP6_GEN(Icmp6InPktTooBigs),
SNMP6_GEN(Icmp6InTimeExcds),
SNMP6_GEN(Icmp6InParmProblems),
SNMP6_GEN(Icmp6InEchos),
SNMP6_GEN(Icmp6InEchoReplies),
SNMP6_GEN(Icmp6InGroupMembQueries),
SNMP6_GEN(Icmp6InGroupMembResponses),
SNMP6_GEN(Icmp6InGroupMembReductions),
SNMP6_GEN(Icmp6InRouterSolicits),
SNMP6_GEN(Icmp6InRouterAdvertisements),
SNMP6_GEN(Icmp6InNeighborSolicits),
SNMP6_GEN(Icmp6InNeighborAdvertisements),
SNMP6_GEN(Icmp6InRedirects),
SNMP6_GEN(Icmp6OutMsgs),
SNMP6_GEN(Icmp6OutDestUnreachs),
SNMP6_GEN(Icmp6OutPktTooBigs),
SNMP6_GEN(Icmp6OutTimeExcds),
SNMP6_GEN(Icmp6OutParmProblems),
SNMP6_GEN(Icmp6OutEchoReplies),
SNMP6_GEN(Icmp6OutRouterSolicits),
SNMP6_GEN(Icmp6OutNeighborSolicits),
SNMP6_GEN(Icmp6OutNeighborAdvertisements),
SNMP6_GEN(Icmp6OutRedirects),
SNMP6_GEN(Icmp6OutGroupMembResponses),
SNMP6_GEN(Icmp6OutGroupMembReductions),
#undef SNMP6_GEN
SNMP6_SENTINEL
};
static struct snmp6_item snmp6_udp6_list[] = {
#define SNMP6_GEN(x) { .name = "Udp6" #x , .offset = offsetof(struct udp_mib, Udp##x) }
SNMP6_GEN(InDatagrams),
SNMP6_GEN(NoPorts),
SNMP6_GEN(InErrors),
SNMP6_GEN(OutDatagrams),
#undef SNMP6_GEN
SNMP6_SENTINEL
};
static unsigned long
fold_field(void *mib[], int offt)
{
unsigned long res = 0;
int i;
for (i = 0; i < NR_CPUS; i++) {
if (!cpu_possible(i))
continue;
res +=
*((unsigned long *) (((void *)per_cpu_ptr(mib[0], i)) +
offt));
res +=
*((unsigned long *) (((void *)per_cpu_ptr(mib[1], i)) +
offt));
}
return res;
}
static inline void
snmp6_seq_show_item(struct seq_file *seq, void **mib, struct snmp6_item *itemlist)
{
int i;
for (i=0; itemlist[i].name; i++)
seq_printf(seq, "%-32s\t%lu\n", itemlist[i].name,
fold_field(mib, itemlist[i].offset));
}
static int snmp6_seq_show(struct seq_file *seq, void *v)
{
struct inet6_dev *idev = (struct inet6_dev *)seq->private;
if (idev) {
seq_printf(seq, "%-32s\t%u\n", "ifIndex", idev->dev->ifindex);
snmp6_seq_show_item(seq, (void **)idev->stats.icmpv6, snmp6_icmp6_list);
} else {
snmp6_seq_show_item(seq, (void **)ipv6_statistics, snmp6_ipv6_list);
snmp6_seq_show_item(seq, (void **)icmpv6_statistics, snmp6_icmp6_list);
snmp6_seq_show_item(seq, (void **)udp_stats_in6, snmp6_udp6_list);
}
return 0;
}
static int sockstat6_seq_open(struct inode *inode, struct file *file)
{
return single_open(file, sockstat6_seq_show, NULL);
}
static struct file_operations sockstat6_seq_fops = {
.owner = THIS_MODULE,
.open = sockstat6_seq_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static int snmp6_seq_open(struct inode *inode, struct file *file)
{
return single_open(file, snmp6_seq_show, PDE(inode)->data);
}
static struct file_operations snmp6_seq_fops = {
.owner = THIS_MODULE,
.open = snmp6_seq_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
int snmp6_register_dev(struct inet6_dev *idev)
{
int err = -ENOMEM;
struct proc_dir_entry *p;
if (!idev || !idev->dev)
return -EINVAL;
if (snmp6_mib_init((void **)idev->stats.icmpv6, sizeof(struct icmpv6_mib),
__alignof__(struct icmpv6_mib)) < 0)
goto err_icmp;
if (!proc_net_devsnmp6) {
err = -ENOENT;
goto err_proc;
}
p = create_proc_entry(idev->dev->name, S_IRUGO, proc_net_devsnmp6);
if (!p)
goto err_proc;
p->data = idev;
p->proc_fops = &snmp6_seq_fops;
idev->stats.proc_dir_entry = p;
return 0;
err_proc:
snmp6_mib_free((void **)idev->stats.icmpv6);
err_icmp:
return err;
}
int snmp6_unregister_dev(struct inet6_dev *idev)
{
if (!proc_net_devsnmp6)
return -ENOENT;
if (!idev || !idev->stats.proc_dir_entry)
return -EINVAL;
remove_proc_entry(idev->stats.proc_dir_entry->name,
proc_net_devsnmp6);
snmp6_mib_free((void **)idev->stats.icmpv6);
return 0;
}
int __init ipv6_misc_proc_init(void)
{
int rc = 0;
if (!proc_net_fops_create("snmp6", S_IRUGO, &snmp6_seq_fops))
goto proc_snmp6_fail;
proc_net_devsnmp6 = proc_mkdir("dev_snmp6", proc_net);
if (!proc_net_devsnmp6)
goto proc_dev_snmp6_fail;
if (!proc_net_fops_create("sockstat6", S_IRUGO, &sockstat6_seq_fops))
goto proc_sockstat6_fail;
out:
return rc;
proc_sockstat6_fail:
proc_net_remove("dev_snmp6");
proc_dev_snmp6_fail:
proc_net_remove("snmp6");
proc_snmp6_fail:
rc = -ENOMEM;
goto out;
}
void ipv6_misc_proc_exit(void)
{
proc_net_remove("sockstat6");
proc_net_remove("dev_snmp6");
proc_net_remove("snmp6");
}
#else /* CONFIG_PROC_FS */
int snmp6_register_dev(struct inet6_dev *idev)
{
int err = -ENOMEM;
if (!idev || !idev->dev)
return -EINVAL;
if (snmp6_mib_init((void **)idev->stats.icmpv6, sizeof(struct icmpv6_mib),
__alignof__(struct icmpv6_mib)) < 0)
goto err_icmp;
return 0;
err_icmp:
return err;
}
int snmp6_unregister_dev(struct inet6_dev *idev)
{
snmp6_mib_free((void **)idev->stats.icmpv6);
return 0;
}
#endif
